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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.33 by root, Mon Aug 21 01:51:23 2006 UTC vs.
Revision 1.223 by root, Sun Mar 11 02:12:44 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
		48	our $RELOAD; # number of reloads so far
17	our @EVENT;	49	our @EVENT;
18	our %PROP_TYPE;	50	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;	51
20	our $LIBDIR = maps_directory "perl";	52	our $TICK = MAX_TIME * 1e-6;
		53	our $TICK_WATCHER;
		54	our $AIO_POLL_WATCHER;
		55	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
		56	our $NEXT_TICK;
		57	our $NOW;
		58	our $USE_FSYNC = 1; # use fsync to write maps - default off
		59
		60	our $BDB_POLL_WATCHER;
		61	our $DB_ENV;
		62
		63	our %CFG;
		64
		65	our $UPTIME; $UPTIME ||= time;
		66	our $RUNTIME;
		67
		68	our %PLAYER; # all users
		69	our %MAP; # all maps
		70	our $LINK_MAP; # the special {link} map, which is always available
		71	our $RANDOM_MAPS = cf::localdir . "/random";
		72	our $BDB_ENV_DIR = cf::localdir . "/db";
		73
		74	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		75	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		76
		77	# used to convert map paths into valid unix filenames by replacing / by ∕
		78	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		79
		80	binmode STDOUT;
		81	binmode STDERR;
		82
		83	# read virtual server time, if available
		84	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		85	open my $fh, "<", cf::localdir . "/runtime"
		86	or die "unable to read runtime file: $!";
		87	$RUNTIME = <$fh> + 0.;
		88	}
		89
		90	mkdir cf::localdir;
		91	mkdir cf::localdir . "/" . cf::playerdir;
		92	mkdir cf::localdir . "/" . cf::tmpdir;
		93	mkdir cf::localdir . "/" . cf::uniquedir;
		94	mkdir $RANDOM_MAPS;
		95	mkdir $BDB_ENV_DIR;
		96
		97	our $EMERGENCY_POSITION;
		98
		99	sub cf::map::normalise;
		100
		101	#############################################################################
		102
		103	=head2 GLOBAL VARIABLES
		104
		105	=over 4
		106
		107	=item $cf::UPTIME
		108
		109	The timestamp of the server start (so not actually an uptime).
		110
		111	=item $cf::RUNTIME
		112
		113	The time this server has run, starts at 0 and is increased by $cf::TICK on
		114	every server tick.
		115
		116	=item $cf::LIBDIR
		117
		118	The perl library directory, where extensions and cf-specific modules can
		119	be found. It will be added to C<@INC> automatically.
		120
		121	=item $cf::NOW
		122
		123	The time of the last (current) server tick.
		124
		125	=item $cf::TICK
		126
		127	The interval between server ticks, in seconds.
		128
		129	=item %cf::CFG
		130
		131	Configuration for the server, loaded from C</etc/crossfire/config>, or
		132	from wherever your confdir points to.
		133
		134	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		135
		136	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		137	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		138	processing has been done. Call C<< ->wait >> on them to maximise the
		139	window of cpu time available, or simply to synchronise to the server tick.
		140
		141	=back
		142
		143	=cut
21		144
22	BEGIN {	145	BEGIN {
23	@EVENT = map lc, @EVENT;
24
25	*CORE::GLOBAL::warn = sub {	146	*CORE::GLOBAL::warn = sub {
26	my $msg = join "", @_;	147	my $msg = join "", @_;
		148	utf8::encode $msg;
		149
27	$msg .= "\n"	150	$msg .= "\n"
28	unless $msg =~ /\n$/;	151	unless $msg =~ /\n$/;
29		152
30	print STDERR "cfperl: $msg";
31	LOG llevError, "cfperl: $msg";	153	LOG llevError, $msg;
32	};	154	};
33	}	155	}
34		156
35	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	157	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		158	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		159	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		160	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		161	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		162	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
36		163
37	# generate property mutators	164	# we bless all objects into (empty) derived classes to force a method lookup
38	sub prop_gen {	165	# within the Safe compartment.
39	my ($prefix, $class) = @_;	166	for my $pkg (qw(
40		167	cf::global cf::attachable
		168	cf::object cf::object::player
		169	cf::client cf::player
		170	cf::arch cf::living
		171	cf::map cf::party cf::region
		172	)) {
41	no strict 'refs';	173	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"} = $pkg;	174	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79	}	175	}
80		176
81	$Event::DIED = sub {	177	$Event::DIED = sub {
82	warn "error in event callback: @_";	178	warn "error in event callback: @_";
83	};	179	};
84		180
85	my %ext_pkg;	181	=head2 UTILITY FUNCTIONS
86	my @exts;
87	my @hook;
88	my %command;
89	my %extcmd;
90		182
91	sub inject_event {	183	=over 4
92	my $extension = shift;	184
		185	=item dumpval $ref
		186
		187	=cut
		188
		189	sub dumpval {
		190	eval {
		191	local $SIG{__DIE__};
		192	my $d;
		193	if (1) {
		194	$d = new Data::Dumper([$_[0]], ["*var"]);
		195	$d->Terse(1);
		196	$d->Indent(2);
		197	$d->Quotekeys(0);
		198	$d->Useqq(1);
		199	#$d->Bless(...);
		200	$d->Seen($_[1]) if @_ > 1;
		201	$d = $d->Dump();
		202	}
		203	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		204	$d
		205	} || "[unable to dump $_[0]: '$@']";
		206	}
		207
		208	use JSON::Syck (); # TODO# replace by JSON::PC once working
		209
		210	=item $ref = cf::from_json $json
		211
		212	Converts a JSON string into the corresponding perl data structure.
		213
		214	=cut
		215
		216	sub from_json($) {
		217	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		218	JSON::Syck::Load $_[0]
		219	}
		220
		221	=item $json = cf::to_json $ref
		222
		223	Converts a perl data structure into its JSON representation.
		224
		225	=cut
		226
		227	sub to_json($) {
		228	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		229	JSON::Syck::Dump $_[0]
		230	}
		231
		232	=item cf::lock_wait $string
		233
		234	Wait until the given lock is available. See cf::lock_acquire.
		235
		236	=item my $lock = cf::lock_acquire $string
		237
		238	Wait until the given lock is available and then acquires it and returns
		239	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		240	for example when the coroutine gets canceled), the lock is automatically
		241	returned.
		242
		243	Lock names should begin with a unique identifier (for example, cf::map::find
		244	uses map_find and cf::map::load uses map_load).
		245
		246	=cut
		247
		248	our %LOCK;
		249
		250	sub lock_wait($) {
		251	my ($key) = @_;
		252
		253	# wait for lock, if any
		254	while ($LOCK{$key}) {
		255	push @{ $LOCK{$key} }, $Coro::current;
		256	Coro::schedule;
		257	}
		258	}
		259
		260	sub lock_acquire($) {
		261	my ($key) = @_;
		262
		263	# wait, to be sure we are not locked
		264	lock_wait $key;
		265
		266	$LOCK{$key} = [];
		267
		268	Coro::guard {
		269	# wake up all waiters, to be on the safe side
		270	$_->ready for @{ delete $LOCK{$key} };
		271	}
		272	}
		273
		274	sub freeze_mainloop {
		275	return unless $TICK_WATCHER->is_active;
		276
		277	my $guard = Coro::guard {
		278	$TICK_WATCHER->start;
		279	};
		280	$TICK_WATCHER->stop;
		281	$guard
		282	}
		283
		284	=item cf::async { BLOCK }
		285
		286	Currently the same as Coro::async_pool, meaning you cannot use
		287	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		288	thing you are allowed to do is call C<prio> on it.
		289
		290	=cut
		291
		292	BEGIN { *async = \&Coro::async_pool }
		293
		294	=item cf::sync_job { BLOCK }
		295
		296	The design of crossfire+ requires that the main coro ($Coro::main) is
		297	always able to handle events or runnable, as crossfire+ is only partly
		298	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		299
		300	If it must be done, put the blocking parts into C<sync_job>. This will run
		301	the given BLOCK in another coroutine while waiting for the result. The
		302	server will be frozen during this time, so the block should either finish
		303	fast or be very important.
		304
		305	=cut
		306
		307	sub sync_job(&) {
		308	my ($job) = @_;
		309
		310	if ($Coro::current == $Coro::main) {
		311	# this is the main coro, too bad, we have to block
		312	# till the operation succeeds, freezing the server :/
		313
		314	# TODO: use suspend/resume instead
		315	# (but this is cancel-safe)
		316	my $freeze_guard = freeze_mainloop;
		317
		318	my $busy = 1;
		319	my @res;
		320
		321	(async {
		322	@res = eval { $job->() };
		323	warn $@ if $@;
		324	undef $busy;
		325	})->prio (Coro::PRIO_MAX);
		326
		327	while ($busy) {
		328	Coro::cede or Event::one_event;
		329	}
		330
		331	wantarray ? @res : $res[0]
		332	} else {
		333	# we are in another coroutine, how wonderful, everything just works
		334
		335	$job->()
		336	}
		337	}
		338
		339	=item $coro = cf::async_ext { BLOCK }
		340
		341	Like async, but this coro is automatically being canceled when the
		342	extension calling this is being unloaded.
		343
		344	=cut
		345
		346	sub async_ext(&) {
93	my $event_code = shift;	347	my $cb = shift;
94		348
95	my $cb = $hook[$event_code]{$extension}	349	my $coro = &Coro::async ($cb);
		350
		351	$coro->on_destroy (sub {
		352	delete $EXT_CORO{$coro+0};
		353	});
		354	$EXT_CORO{$coro+0} = $coro;
		355
		356	$coro
		357	}
		358
		359	sub write_runtime {
		360	my $guard = cf::lock_acquire "write_runtime";
		361
		362	my $runtime = cf::localdir . "/runtime";
		363
		364	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
96	or return;	365	or return;
97		366
98	&$cb	367	my $value = $cf::RUNTIME + 90 + 10;
99	}	368	# 10 is the runtime save interval, for a monotonic clock
		369	# 60 allows for the watchdog to kill the server.
100		370
101	sub inject_global_event {	371	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		372	and return;
		373
		374	# always fsync - this file is important
		375	aio_fsync $fh
		376	and return;
		377
		378	close $fh
		379	or return;
		380
		381	aio_rename "$runtime~", $runtime
		382	and return;
		383
		384	1
		385	}
		386
		387	=back
		388
		389	=cut
		390
		391	#############################################################################
		392
		393	=head2 ATTACHABLE OBJECTS
		394
		395	Many objects in crossfire are so-called attachable objects. That means you can
		396	attach callbacks/event handlers (a collection of which is called an "attachment")
		397	to it. All such attachable objects support the following methods.
		398
		399	In the following description, CLASS can be any of C<global>, C<object>
		400	C<player>, C<client> or C<map> (i.e. the attachable objects in
		401	crossfire+).
		402
		403	=over 4
		404
		405	=item $attachable->attach ($attachment, key => $value...)
		406
		407	=item $attachable->detach ($attachment)
		408
		409	Attach/detach a pre-registered attachment to a specific object and give it
		410	the specified key/value pairs as arguments.
		411
		412	Example, attach a minesweeper attachment to the given object, making it a
		413	10x10 minesweeper game:
		414
		415	$obj->attach (minesweeper => width => 10, height => 10);
		416
		417	=item $bool = $attachable->attached ($name)
		418
		419	Checks wether the named attachment is currently attached to the object.
		420
		421	=item cf::CLASS->attach ...
		422
		423	=item cf::CLASS->detach ...
		424
		425	Define an anonymous attachment and attach it to all objects of the given
		426	CLASS. See the next function for an explanation of its arguments.
		427
		428	You can attach to global events by using the C<cf::global> class.
		429
		430	Example, log all player logins:
		431
		432	cf::player->attach (
		433	on_login => sub {
		434	my ($pl) = @_;
		435	...
		436	},
		437	);
		438
		439	Example, attach to the jeweler skill:
		440
		441	cf::object->attach (
		442	type => cf::SKILL,
		443	subtype => cf::SK_JEWELER,
		444	on_use_skill => sub {
		445	my ($sk, $ob, $part, $dir, $msg) = @_;
		446	...
		447	},
		448	);
		449
		450	=item cf::CLASS::attachment $name, ...
		451
		452	Register an attachment by C<$name> through which attachable objects of the
		453	given CLASS can refer to this attachment.
		454
		455	Some classes such as crossfire maps and objects can specify attachments
		456	that are attached at load/instantiate time, thus the need for a name.
		457
		458	These calls expect any number of the following handler/hook descriptions:
		459
		460	=over 4
		461
		462	=item prio => $number
		463
		464	Set the priority for all following handlers/hooks (unless overwritten
		465	by another C<prio> setting). Lower priority handlers get executed
		466	earlier. The default priority is C<0>, and many built-in handlers are
		467	registered at priority C<-1000>, so lower priorities should not be used
		468	unless you know what you are doing.
		469
		470	=item type => $type
		471
		472	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		473	given type of objects only (the additional parameter C<subtype> can be
		474	used to further limit to the given subtype).
		475
		476	=item on_I<event> => \&cb
		477
		478	Call the given code reference whenever the named event happens (event is
		479	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		480	handlers are recognised generally depends on the type of object these
		481	handlers attach to).
		482
		483	See F<include/eventinc.h> for the full list of events supported, and their
		484	class.
		485
		486	=item package => package::
		487
		488	Look for sub functions of the name C<< on_I<event> >> in the given
		489	package and register them. Only handlers for eevents supported by the
		490	object/class are recognised.
		491
		492	=back
		493
		494	Example, define an attachment called "sockpuppet" that calls the given
		495	event handler when a monster attacks:
		496
		497	cf::object::attachment sockpuppet =>
		498	on_skill_attack => sub {
		499	my ($self, $victim) = @_;
		500	...
		501	}
		502	}
		503
		504	=item $attachable->valid
		505
		506	Just because you have a perl object does not mean that the corresponding
		507	C-level object still exists. If you try to access an object that has no
		508	valid C counterpart anymore you get an exception at runtime. This method
		509	can be used to test for existence of the C object part without causing an
		510	exception.
		511
		512	=cut
		513
		514	# the following variables are defined in .xs and must not be re-created
		515	our @CB_GLOBAL = (); # registry for all global events
		516	our @CB_ATTACHABLE = (); # registry for all attachables
		517	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		518	our @CB_PLAYER = ();
		519	our @CB_CLIENT = ();
		520	our @CB_TYPE = (); # registry for type (cf-object class) based events
		521	our @CB_MAP = ();
		522
		523	my %attachment;
		524
		525	sub cf::attachable::thawer_merge {
		526	# simply override everything except _meta
		527	local $_[0]{_meta};
		528	%{$_[0]} = %{$_[1]};
		529	}
		530
		531	sub _attach_cb($$$$) {
		532	my ($registry, $event, $prio, $cb) = @_;
		533
		534	use sort 'stable';
		535
		536	$cb = [$prio, $cb];
		537
		538	@{$registry->[$event]} = sort
		539	{ $a->[0] cmp $b->[0] }
		540	@{$registry->[$event] || []}, $cb;
		541	}
		542
		543	# hack
		544	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		545
		546	# attach handles attaching event callbacks
		547	# the only thing the caller has to do is pass the correct
		548	# registry (== where the callback attaches to).
		549	sub _attach {
		550	my ($registry, $klass, @arg) = @_;
		551
		552	my $object_type;
		553	my $prio = 0;
		554	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		555
		556	#TODO: get rid of this hack
		557	if ($attachable_klass{$klass}) {
		558	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		559	}
		560
		561	while (@arg) {
		562	my $type = shift @arg;
		563
		564	if ($type eq "prio") {
		565	$prio = shift @arg;
		566
		567	} elsif ($type eq "type") {
		568	$object_type = shift @arg;
		569	$registry = $CB_TYPE[$object_type] ||= [];
		570
		571	} elsif ($type eq "subtype") {
		572	defined $object_type or Carp::croak "subtype specified without type";
		573	my $object_subtype = shift @arg;
		574	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		575
		576	} elsif ($type eq "package") {
		577	my $pkg = shift @arg;
		578
		579	while (my ($name, $id) = each %cb_id) {
		580	if (my $cb = $pkg->can ($name)) {
		581	_attach_cb $registry, $id, $prio, $cb;
		582	}
		583	}
		584
		585	} elsif (exists $cb_id{$type}) {
		586	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		587
		588	} elsif (ref $type) {
		589	warn "attaching objects not supported, ignoring.\n";
		590
		591	} else {
		592	shift @arg;
		593	warn "attach argument '$type' not supported, ignoring.\n";
		594	}
		595	}
		596	}
		597
		598	sub _object_attach {
		599	my ($obj, $name, %arg) = @_;
		600
		601	return if exists $obj->{_attachment}{$name};
		602
		603	if (my $attach = $attachment{$name}) {
		604	my $registry = $obj->registry;
		605
		606	for (@$attach) {
		607	my ($klass, @attach) = @$_;
		608	_attach $registry, $klass, @attach;
		609	}
		610
		611	$obj->{$name} = \%arg;
		612	} else {
		613	warn "object uses attachment '$name' that is not available, postponing.\n";
		614	}
		615
		616	$obj->{_attachment}{$name} = undef;
		617	}
		618
		619	sub cf::attachable::attach {
		620	if (ref $_[0]) {
		621	_object_attach @_;
		622	} else {
		623	_attach shift->_attach_registry, @_;
		624	}
		625	};
		626
		627	# all those should be optimised
		628	sub cf::attachable::detach {
		629	my ($obj, $name) = @_;
		630
		631	if (ref $obj) {
		632	delete $obj->{_attachment}{$name};
		633	reattach ($obj);
		634	} else {
		635	Carp::croak "cannot, currently, detach class attachments";
		636	}
		637	};
		638
		639	sub cf::attachable::attached {
		640	my ($obj, $name) = @_;
		641
		642	exists $obj->{_attachment}{$name}
		643	}
		644
		645	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		646	eval "#line " . __LINE__ . " 'cf.pm'
		647	sub cf::\L$klass\E::_attach_registry {
		648	(\\\@CB_$klass, KLASS_$klass)
		649	}
		650
		651	sub cf::\L$klass\E::attachment {
		652	my \$name = shift;
		653
		654	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		655	}
		656	";
		657	die if $@;
		658	}
		659
		660	our $override;
		661	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		662
		663	sub override {
		664	$override = 1;
		665	@invoke_results = ();
		666	}
		667
		668	sub do_invoke {
102	my $event = shift;	669	my $event = shift;
		670	my $callbacks = shift;
103		671
104	my $cb = $hook[$event]	672	@invoke_results = ();
		673
		674	local $override;
		675
		676	for (@$callbacks) {
		677	eval { &{$_->[1]} };
		678
		679	if ($@) {
		680	warn "$@";
		681	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		682	override;
		683	}
		684
		685	return 1 if $override;
		686	}
		687
		688	0
		689	}
		690
		691	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		692
		693	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		694
		695	Generate an object-specific event with the given arguments.
		696
		697	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		698	removed in future versions), and there is no public API to access override
		699	results (if you must, access C<@cf::invoke_results> directly).
		700
		701	=back
		702
		703	=cut
		704
		705	#############################################################################
		706	# object support
		707
		708	sub reattach {
		709	# basically do the same as instantiate, without calling instantiate
		710	my ($obj) = @_;
		711
		712	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		713
		714	my $registry = $obj->registry;
		715
		716	@$registry = ();
		717
		718	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		719
		720	for my $name (keys %{ $obj->{_attachment} || {} }) {
		721	if (my $attach = $attachment{$name}) {
		722	for (@$attach) {
		723	my ($klass, @attach) = @$_;
		724	_attach $registry, $klass, @attach;
		725	}
		726	} else {
		727	warn "object uses attachment '$name' that is not available, postponing.\n";
		728	}
		729	}
		730	}
		731
		732	cf::attachable->attach (
		733	prio => -1000000,
		734	on_instantiate => sub {
		735	my ($obj, $data) = @_;
		736
		737	$data = from_json $data;
		738
		739	for (@$data) {
		740	my ($name, $args) = @$_;
		741
		742	$obj->attach ($name, %{$args || {} });
		743	}
		744	},
		745	on_reattach => \&reattach,
		746	on_clone => sub {
		747	my ($src, $dst) = @_;
		748
		749	@{$dst->registry} = @{$src->registry};
		750
		751	%$dst = %$src;
		752
		753	%{$dst->{_attachment}} = %{$src->{_attachment}}
		754	if exists $src->{_attachment};
		755	},
		756	);
		757
		758	sub object_freezer_save {
		759	my ($filename, $rdata, $objs) = @_;
		760
		761	sync_job {
		762	if (length $$rdata) {
		763	warn sprintf "saving %s (%d,%d)\n",
		764	$filename, length $$rdata, scalar @$objs;
		765
		766	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		767	chmod SAVE_MODE, $fh;
		768	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		769	aio_fsync $fh if $cf::USE_FSYNC;
		770	close $fh;
		771
		772	if (@$objs) {
		773	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		774	chmod SAVE_MODE, $fh;
		775	my $data = Storable::nfreeze { version => 1, objs => $objs };
		776	aio_write $fh, 0, (length $data), $data, 0;
		777	aio_fsync $fh if $cf::USE_FSYNC;
		778	close $fh;
		779	aio_rename "$filename.pst~", "$filename.pst";
		780	}
		781	} else {
		782	aio_unlink "$filename.pst";
		783	}
		784
		785	aio_rename "$filename~", $filename;
		786	} else {
		787	warn "FATAL: $filename~: $!\n";
		788	}
		789	} else {
		790	aio_unlink $filename;
		791	aio_unlink "$filename.pst";
		792	}
		793	}
		794	}
		795
		796	sub object_freezer_as_string {
		797	my ($rdata, $objs) = @_;
		798
		799	use Data::Dumper;
		800
		801	$$rdata . Dumper $objs
		802	}
		803
		804	sub object_thawer_load {
		805	my ($filename) = @_;
		806
		807	my ($data, $av);
		808
		809	(aio_load $filename, $data) >= 0
105	or return;	810	or return;
106		811
107	List::Util::max map &$_, values %$cb	812	unless (aio_stat "$filename.pst") {
108	}	813	(aio_load "$filename.pst", $av) >= 0
109		814	or return;
110	sub inject_command {	815	$av = eval { (Storable::thaw $av)->{objs} };
111	my ($name, $obj, $params) = @_;
112
113	for my $cmd (@{ $command{$name} }) {
114	$cmd->[1]->($obj, $params);
115	}	816	}
116		817
117	-1	818	warn sprintf "loading %s (%d)\n",
		819	$filename, length $data, scalar @{$av || []};#d#
		820	return ($data, $av);
118	}	821	}
		822
		823	#############################################################################
		824	# command handling &c
		825
		826	=item cf::register_command $name => \&callback($ob,$args);
		827
		828	Register a callback for execution when the client sends the user command
		829	$name.
		830
		831	=cut
119		832
120	sub register_command {	833	sub register_command {
121	my ($name, $time, $cb) = @_;	834	my ($name, $cb) = @_;
122		835
123	my $caller = caller;	836	my $caller = caller;
124	#warn "registering command '$name/$time' to '$caller'";	837	#warn "registering command '$name/$time' to '$caller'";
125		838
126	push @{ $command{$name} }, [$time, $cb, $caller];	839	push @{ $COMMAND{$name} }, [$caller, $cb];
127	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
128	}	840	}
		841
		842	=item cf::register_extcmd $name => \&callback($pl,$packet);
		843
		844	Register a callbackf ro execution when the client sends an extcmd packet.
		845
		846	If the callback returns something, it is sent back as if reply was being
		847	called.
		848
		849	=cut
129		850
130	sub register_extcmd {	851	sub register_extcmd {
131	my ($name, $cb) = @_;	852	my ($name, $cb) = @_;
132		853
133	my $caller = caller;	854	$EXTCMD{$name} = $cb;
134	#warn "registering extcmd '$name' to '$caller'";
135
136	$extcmd{$name} = [$cb, $caller];
137	}	855	}
138		856
139	sub register {	857	cf::player->attach (
140	my ($base, $pkg) = @_;	858	on_command => sub {
		859	my ($pl, $name, $params) = @_;
141		860
142	for my $idx (0 .. $#EVENT) {	861	my $cb = $COMMAND{$name}
143	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	862	or return;
144	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	863
145	$hook[$idx]{$base} = $ref;	864	for my $cmd (@$cb) {
		865	$cmd->[1]->($pl->ob, $params);
146	}	866	}
		867
		868	cf::override;
147	}	869	},
148	}	870	on_extcmd => sub {
		871	my ($pl, $buf) = @_;
		872
		873	my $msg = eval { from_json $buf };
		874
		875	if (ref $msg) {
		876	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		877	if (my %reply = $cb->($pl, $msg)) {
		878	$pl->ext_reply ($msg->{msgid}, %reply);
		879	}
		880	}
		881	} else {
		882	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		883	}
		884
		885	cf::override;
		886	},
		887	);
149		888
150	sub load_extension {	889	sub load_extension {
151	my ($path) = @_;	890	my ($path) = @_;
152		891
153	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	892	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
154	my $base = $1;	893	my $base = $1;
155	my $pkg = $1;	894	my $pkg = $1;
156	$pkg =~ s/[^[:word:]]/_/g;	895	$pkg =~ s/[^[:word:]]/_/g;
157	$pkg = "cf::ext::$pkg";	896	$pkg = "ext::$pkg";
158		897
159	warn "loading '$path' into '$pkg'\n";	898	warn "... loading '$path' into '$pkg'\n";
160		899
161	open my $fh, "<:utf8", $path	900	open my $fh, "<:utf8", $path
162	or die "$path: $!";	901	or die "$path: $!";
163		902
164	my $source =	903	my $source =
165	"package $pkg; use strict; use utf8;\n"	904	"package $pkg; use strict; use utf8;\n"
166	. "#line 1 \"$path\"\n{\n"	905	. "#line 1 \"$path\"\n{\n"
167	. (do { local $/; <$fh> })	906	. (do { local $/; <$fh> })
168	. "\n};\n1";	907	. "\n};\n1";
169		908
170	eval $source	909	unless (eval $source) {
171	or die "$path: $@";	910	my $msg = $@ ? "$path: $@\n"
		911	: "extension disabled.\n";
		912	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		913	warn $@;
		914	warn "mandatory extension failed to load, exiting.\n";
		915	exit 1;
		916	}
		917	die $@;
		918	}
172		919
173	push @exts, $pkg;	920	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	}	921	}
219		922
220	sub load_extensions {	923	sub load_extensions {
221	my $LIBDIR = maps_directory "perl";
222
223	for my $ext (<$LIBDIR/*.ext>) {	924	for my $ext (<$LIBDIR/*.ext>) {
224	next unless -r $ext;	925	next unless -r $ext;
225	eval {	926	eval {
226	load_extension $ext;	927	load_extension $ext;
227	1	928	1
228	} or warn "$ext not loaded: $@";	929	} or warn "$ext not loaded: $@";
229	}	930	}
230	}	931	}
231		932
232	register_command "perl-reload", 0, sub {	933	#############################################################################
		934
		935	=head2 CORE EXTENSIONS
		936
		937	Functions and methods that extend core crossfire objects.
		938
		939	=cut
		940
		941	package cf::player;
		942
		943	use Coro::AIO;
		944
		945	=head3 cf::player
		946
		947	=over 4
		948
		949	=item cf::player::find $login
		950
		951	Returns the given player object, loading it if necessary (might block).
		952
		953	=cut
		954
		955	sub playerdir($) {
		956	cf::localdir
		957	. "/"
		958	. cf::playerdir
		959	. "/"
		960	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		961	}
		962
		963	sub path($) {
		964	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		965
		966	(playerdir $login) . "/$login.pl"
		967	}
		968
		969	sub find_active($) {
		970	$cf::PLAYER{$_[0]}
		971	and $cf::PLAYER{$_[0]}->active
		972	and $cf::PLAYER{$_[0]}
		973	}
		974
		975	sub exists($) {
		976	my ($login) = @_;
		977
		978	$cf::PLAYER{$login}
		979	or cf::sync_job { !aio_stat path $login }
		980	}
		981
		982	sub find($) {
		983	return $cf::PLAYER{$_[0]} || do {
		984	my $login = $_[0];
		985
		986	my $guard = cf::lock_acquire "user_find:$login";
		987
		988	$cf::PLAYER{$_[0]} || do {
		989	my $pl = load_pl path $login
		990	or return;
		991	$cf::PLAYER{$login} = $pl
		992	}
		993	}
		994	}
		995
		996	sub save($) {
		997	my ($pl) = @_;
		998
		999	return if $pl->{deny_save};
		1000
		1001	my $path = path $pl;
		1002	my $guard = cf::lock_acquire "user_save:$path";
		1003
		1004	return if $pl->{deny_save};
		1005
		1006	aio_mkdir playerdir $pl, 0770;
		1007	$pl->{last_save} = $cf::RUNTIME;
		1008
		1009	$pl->save_pl ($path);
		1010	Coro::cede;
		1011	}
		1012
		1013	sub new($) {
		1014	my ($login) = @_;
		1015
		1016	my $self = create;
		1017
		1018	$self->ob->name ($login);
		1019	$self->{deny_save} = 1;
		1020
		1021	$cf::PLAYER{$login} = $self;
		1022
		1023	$self
		1024	}
		1025
		1026	=item $pl->quit_character
		1027
		1028	Nukes the player without looking back. If logged in, the connection will
		1029	be destroyed. May block for a long time.
		1030
		1031	=cut
		1032
		1033	sub quit_character {
		1034	my ($pl) = @_;
		1035
		1036	my $name = $pl->ob->name;
		1037
		1038	$pl->{deny_save} = 1;
		1039	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1040
		1041	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1042	$pl->deactivate;
		1043	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1044	$pl->ns->destroy if $pl->ns;
		1045
		1046	my $path = playerdir $pl;
		1047	my $temp = "$path~$cf::RUNTIME~deleting~";
		1048	aio_rename $path, $temp;
		1049	delete $cf::PLAYER{$pl->ob->name};
		1050	$pl->destroy;
		1051
		1052	my $prefix = qr<^~\Q$name\E/>;
		1053
		1054	# nuke player maps
		1055	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1056
		1057	IO::AIO::aio_rmtree $temp;
		1058	}
		1059
		1060	=item $pl->kick
		1061
		1062	Kicks a player out of the game. This destroys the connection.
		1063
		1064	=cut
		1065
		1066	sub kick {
		1067	my ($pl, $kicker) = @_;
		1068
		1069	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1070	$pl->killer ("kicked");
		1071	$pl->ns->destroy;
		1072	}
		1073
		1074	=item cf::player::list_logins
		1075
		1076	Returns am arrayref of all valid playernames in the system, can take a
		1077	while and may block, so not sync_job-capable, ever.
		1078
		1079	=cut
		1080
		1081	sub list_logins {
		1082	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1083	or return [];
		1084
		1085	my @logins;
		1086
		1087	for my $login (@$dirs) {
		1088	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1089	aio_read $fh, 0, 512, my $buf, 0 or next;
		1090	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1091
		1092	utf8::decode $login;
		1093	push @logins, $login;
		1094	}
		1095
		1096	\@logins
		1097	}
		1098
		1099	=item $player->maps
		1100
		1101	Returns an arrayref of map paths that are private for this
		1102	player. May block.
		1103
		1104	=cut
		1105
		1106	sub maps($) {
		1107	my ($pl) = @_;
		1108
		1109	$pl = ref $pl ? $pl->ob->name : $pl;
		1110
		1111	my $files = aio_readdir playerdir $pl
		1112	or return;
		1113
		1114	my @paths;
		1115
		1116	for (@$files) {
		1117	utf8::decode $_;
		1118	next if /\.(?:pl|pst)$/;
		1119	next unless /^$PATH_SEP/o;
		1120
		1121	push @paths, cf::map::normalise "~$pl/$_";
		1122	}
		1123
		1124	\@paths
		1125	}
		1126
		1127	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1128
		1129	Sends an ext reply to the player.
		1130
		1131	=cut
		1132
		1133	sub ext_reply($$$%) {
		1134	my ($self, $id, %msg) = @_;
		1135
		1136	$msg{msgid} = $id;
		1137
		1138	$self->send ("ext " . cf::to_json \%msg);
		1139	}
		1140
		1141	package cf;
		1142
		1143	=back
		1144
		1145
		1146	=head3 cf::map
		1147
		1148	=over 4
		1149
		1150	=cut
		1151
		1152	package cf::map;
		1153
		1154	use Fcntl;
		1155	use Coro::AIO;
		1156
		1157	use overload
		1158	'""' => \&as_string,
		1159	fallback => 1;
		1160
		1161	our $MAX_RESET = 3600;
		1162	our $DEFAULT_RESET = 3000;
		1163
		1164	sub generate_random_map {
		1165	my ($self, $rmp) = @_;
		1166	# mit "rum" bekleckern, nicht
		1167	$self->_create_random_map (
		1168	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1169	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1170	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1171	$rmp->{exit_on_final_map},
		1172	$rmp->{xsize}, $rmp->{ysize},
		1173	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1174	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1175	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1176	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1177	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1178	(cf::region::find $rmp->{region}), $rmp->{custom}
		1179	)
		1180	}
		1181
		1182	=item cf::map->register ($regex, $prio)
		1183
		1184	Register a handler for the map path matching the given regex at the
		1185	givne priority (higher is better, built-in handlers have priority 0, the
		1186	default).
		1187
		1188	=cut
		1189
		1190	sub register {
		1191	my (undef, $regex, $prio) = @_;
		1192	my $pkg = caller;
		1193
		1194	no strict;
		1195	push @{"$pkg\::ISA"}, __PACKAGE__;
		1196
		1197	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1198	}
		1199
		1200	# also paths starting with '/'
		1201	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1202
		1203	sub thawer_merge {
		1204	my ($self, $merge) = @_;
		1205
		1206	# we have to keep some variables in memory intact
		1207	local $self->{path};
		1208	local $self->{load_path};
		1209	local $self->{deny_save};
		1210	local $self->{deny_reset};
		1211
		1212	$self->SUPER::thawer_merge ($merge);
		1213	}
		1214
		1215	sub normalise {
233	my ($who, $arg) = @_;	1216	my ($path, $base) = @_;
234		1217
235	if ($who->flag (FLAG_WIZ)) {	1218	$path = "$path"; # make sure its a string
236	$who->message ("reloading...");
237		1219
238	warn "reloading...\n";	1220	$path =~ s/\.map$//;
239	eval {
240	# 1. cancel all watchers
241	$_->cancel for Event::all_watchers;
242		1221
243	# 2. unload all extensions	1222	# map plan:
		1223	#
		1224	# /! non-realised random map exit (special hack!)
		1225	# {... are special paths that are not being touched
		1226	# ?xxx/... are special absolute paths
		1227	# ?random/... random maps
		1228	# /... normal maps
		1229	# ~user/... per-player map of a specific user
		1230
		1231	$path =~ s/$PATH_SEP/\//go;
		1232
		1233	# treat it as relative path if it starts with
		1234	# something that looks reasonable
		1235	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1236	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1237
		1238	$base =~ s{[^/]+/?$}{};
		1239	$path = "$base/$path";
		1240	}
		1241
		1242	for ($path) {
		1243	redo if s{//}{/};
		1244	redo if s{/\.?/}{/};
		1245	redo if s{/[^/]+/\.\./}{/};
		1246	}
		1247
		1248	$path
		1249	}
		1250
		1251	sub new_from_path {
		1252	my (undef, $path, $base) = @_;
		1253
		1254	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1255
		1256	$path = normalise $path, $base;
		1257
		1258	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1259	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1260	my $self = bless cf::map::new, $pkg;
		1261	$self->{path} = $path; $self->path ($path);
		1262	$self->init; # pass $1 etc.
		1263	return $self;
		1264	}
		1265	}
		1266
		1267	Carp::carp "unable to resolve path '$path' (base '$base').";
		1268	()
		1269	}
		1270
		1271	sub init {
		1272	my ($self) = @_;
		1273
		1274	$self
		1275	}
		1276
		1277	sub as_string {
		1278	my ($self) = @_;
		1279
		1280	"$self->{path}"
		1281	}
		1282
		1283	# the displayed name, this is a one way mapping
		1284	sub visible_name {
		1285	&as_string
		1286	}
		1287
		1288	# the original (read-only) location
		1289	sub load_path {
		1290	my ($self) = @_;
		1291
		1292	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1293	}
		1294
		1295	# the temporary/swap location
		1296	sub save_path {
		1297	my ($self) = @_;
		1298
		1299	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1300	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1301	}
		1302
		1303	# the unique path, undef == no special unique path
		1304	sub uniq_path {
		1305	my ($self) = @_;
		1306
		1307	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1308	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1309	}
		1310
		1311	# and all this just because we cannot iterate over
		1312	# all maps in C++...
		1313	sub change_all_map_light {
		1314	my ($change) = @_;
		1315
		1316	$_->change_map_light ($change)
		1317	for grep $_->outdoor, values %cf::MAP;
		1318	}
		1319
		1320	sub unlink_save {
		1321	my ($self) = @_;
		1322
		1323	utf8::encode (my $save = $self->save_path);
		1324	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1325	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1326	}
		1327
		1328	sub load_header_from($) {
		1329	my ($self, $path) = @_;
		1330
		1331	utf8::encode $path;
		1332	#aio_open $path, O_RDONLY, 0
		1333	# or return;
		1334
		1335	$self->_load_header ($path)
		1336	or return;
		1337
		1338	$self->{load_path} = $path;
		1339
		1340	1
		1341	}
		1342
		1343	sub load_header_orig {
		1344	my ($self) = @_;
		1345
		1346	$self->load_header_from ($self->load_path)
		1347	}
		1348
		1349	sub load_header_temp {
		1350	my ($self) = @_;
		1351
		1352	$self->load_header_from ($self->save_path)
		1353	}
		1354
		1355	sub prepare_temp {
		1356	my ($self) = @_;
		1357
		1358	$self->last_access ((delete $self->{last_access})
		1359	|| $cf::RUNTIME); #d#
		1360	# safety
		1361	$self->{instantiate_time} = $cf::RUNTIME
		1362	if $self->{instantiate_time} > $cf::RUNTIME;
		1363	}
		1364
		1365	sub prepare_orig {
		1366	my ($self) = @_;
		1367
		1368	$self->{load_original} = 1;
		1369	$self->{instantiate_time} = $cf::RUNTIME;
		1370	$self->last_access ($cf::RUNTIME);
		1371	$self->instantiate;
		1372	}
		1373
		1374	sub load_header {
		1375	my ($self) = @_;
		1376
		1377	if ($self->load_header_temp) {
		1378	$self->prepare_temp;
		1379	} else {
		1380	$self->load_header_orig
		1381	or return;
		1382	$self->prepare_orig;
		1383	}
		1384
		1385	1
		1386	}
		1387
		1388	sub find;
		1389	sub find {
		1390	my ($path, $origin) = @_;
		1391
		1392	$path = normalise $path, $origin && $origin->path;
		1393
		1394	cf::lock_wait "map_find:$path";
		1395
		1396	$cf::MAP{$path} || do {
		1397	my $guard = cf::lock_acquire "map_find:$path";
		1398	my $map = new_from_path cf::map $path
		1399	or return;
		1400
		1401	$map->{last_save} = $cf::RUNTIME;
		1402
		1403	$map->load_header
		1404	or return;
		1405
		1406	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1407	# doing this can freeze the server in a sync job, obviously
		1408	#$cf::WAIT_FOR_TICK->wait;
		1409	$map->reset;
		1410	undef $guard;
		1411	return find $path;
		1412	}
		1413
		1414	$cf::MAP{$path} = $map
		1415	}
		1416	}
		1417
		1418	sub pre_load { }
		1419	sub post_load { }
		1420
		1421	sub load {
		1422	my ($self) = @_;
		1423
		1424	local $self->{deny_reset} = 1; # loading can take a long time
		1425
		1426	my $path = $self->{path};
		1427	my $guard = cf::lock_acquire "map_load:$path";
		1428
		1429	return if $self->in_memory != cf::MAP_SWAPPED;
		1430
		1431	$self->in_memory (cf::MAP_LOADING);
		1432
		1433	$self->alloc;
		1434
		1435	$self->pre_load;
		1436
		1437	$self->_load_objects ($self->{load_path}, 1)
		1438	or return;
		1439
		1440	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1441	if delete $self->{load_original};
		1442
		1443	if (my $uniq = $self->uniq_path) {
		1444	utf8::encode $uniq;
		1445	if (aio_open $uniq, O_RDONLY, 0) {
		1446	$self->clear_unique_items;
		1447	$self->_load_objects ($uniq, 0);
		1448	}
		1449	}
		1450
		1451	Coro::cede;
		1452
		1453	# now do the right thing for maps
		1454	$self->link_multipart_objects;
		1455
		1456	unless ($self->{deny_activate}) {
		1457	$self->decay_objects;
		1458	$self->fix_auto_apply;
		1459	$self->update_buttons;
		1460	Coro::cede;
		1461	$self->set_darkness_map;
		1462	$self->difficulty ($self->estimate_difficulty)
		1463	unless $self->difficulty;
		1464	Coro::cede;
		1465	$self->activate;
		1466	}
		1467
		1468	$self->post_load;
		1469
		1470	$self->in_memory (cf::MAP_IN_MEMORY);
		1471	}
		1472
		1473	sub customise_for {
		1474	my ($self, $ob) = @_;
		1475
		1476	return find "~" . $ob->name . "/" . $self->{path}
		1477	if $self->per_player;
		1478
		1479	$self
		1480	}
		1481
		1482	# find and load all maps in the 3x3 area around a map
		1483	sub load_diag {
		1484	my ($map) = @_;
		1485
		1486	my @diag; # diagonal neighbours
		1487
		1488	for (0 .. 3) {
		1489	my $neigh = $map->tile_path ($_)
244	for (@exts) {	1490	or next;
245	$who->message ("unloading <$_>");	1491	$neigh = find $neigh, $map
246	unload_extension $_;	1492	or next;
		1493	$neigh->load;
		1494
		1495	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1496	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1497	}
		1498
		1499	for (@diag) {
		1500	my $neigh = find @$_
		1501	or next;
		1502	$neigh->load;
		1503	}
		1504	}
		1505
		1506	sub find_sync {
		1507	my ($path, $origin) = @_;
		1508
		1509	cf::sync_job { find $path, $origin }
		1510	}
		1511
		1512	sub do_load_sync {
		1513	my ($map) = @_;
		1514
		1515	cf::sync_job { $map->load };
		1516	}
		1517
		1518	our %MAP_PREFETCH;
		1519	our $MAP_PREFETCHER = undef;
		1520
		1521	sub find_async {
		1522	my ($path, $origin) = @_;
		1523
		1524	$path = normalise $path, $origin && $origin->{path};
		1525
		1526	if (my $map = $cf::MAP{$path}) {
		1527	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1528	}
		1529
		1530	undef $MAP_PREFETCH{$path};
		1531	$MAP_PREFETCHER ||= cf::async {
		1532	while (%MAP_PREFETCH) {
		1533	for my $path (keys %MAP_PREFETCH) {
		1534	my $map = find $path
		1535	or next;
		1536	$map->load;
		1537
		1538	delete $MAP_PREFETCH{$path};
247	}	1539	}
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	};	1540	}
283	warn $@ if $@;	1541	undef $MAP_PREFETCHER;
284	$who->message ($@) if $@;	1542	};
285	warn "reloaded\n";	1543	$MAP_PREFETCHER->prio (6);
286		1544
287	$who->message ("reloaded");	1545	()
		1546	}
		1547
		1548	sub save {
		1549	my ($self) = @_;
		1550
		1551	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1552
		1553	$self->{last_save} = $cf::RUNTIME;
		1554
		1555	return unless $self->dirty;
		1556
		1557	my $save = $self->save_path; utf8::encode $save;
		1558	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1559
		1560	$self->{load_path} = $save;
		1561
		1562	return if $self->{deny_save};
		1563
		1564	local $self->{last_access} = $self->last_access;#d#
		1565
		1566	cf::async {
		1567	$_->contr->save for $self->players;
		1568	};
		1569
		1570	if ($uniq) {
		1571	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1572	$self->_save_objects ($uniq, cf::IO_UNIQUES);
288	} else {	1573	} else {
289	$who->message ("Intruder Alert!");	1574	$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	1575	}
328	}	1576	}
329		1577
330	#############################################################################	1578	sub swap_out {
331	# load/save/clean perl data associated with a map
332
333	*on_mapclean = sub {
334	my ($map) = @_;	1579	my ($self) = @_;
335		1580
336	my $path = $map->tmpname;	1581	# save first because save cedes
337	defined $path or return;	1582	$self->save;
338		1583
339	unlink "$path.cfperl";	1584	my $lock = cf::lock_acquire "map_data:" . $self->path;
340	};
341		1585
342	*on_mapin =	1586	return if $self->players;
343	*on_mapload = sub {	1587	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1588	return if $self->{deny_save};
		1589
		1590	$self->clear;
		1591	$self->in_memory (cf::MAP_SWAPPED);
		1592	}
		1593
		1594	sub reset_at {
344	my ($map) = @_;	1595	my ($self) = @_;
345		1596
346	my $path = $map->tmpname;	1597	# TODO: safety, remove and allow resettable per-player maps
347	$path = $map->path unless defined $path;	1598	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1599	return 1e99 if $self->{deny_reset};
348		1600
349	open my $fh, "<:raw", "$path.cfperl"	1601	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
350	or return; # no perl data	1602	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
351		1603
352	my $data = Storable::thaw do { local $/; <$fh> };	1604	$time + $to
		1605	}
353		1606
354	$data->{version} <= 1	1607	sub should_reset {
355	or return; # too new
356
357	$map->_set_obs ($data->{obs});
358	};
359
360	*on_mapout = sub {
361	my ($map) = @_;	1608	my ($self) = @_;
362		1609
363	my $path = $map->tmpname;	1610	$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	}	1611	}
393		1612
394	*on_player_load = sub {	1613	sub reset {
395	my ($ob, $path) = @_;	1614	my ($self) = @_;
396		1615
397	for my $o (all_objects $ob) {	1616	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		1617
401	%$o = %{ Storable::thaw pack "H*", $value };	1618	return if $self->players;
402	}	1619	return if $self->isa ("ext::map_per_player");#d#
403	}
404	};
405		1620
406	*on_player_save = sub {	1621	warn "resetting map ", $self->path;#d#
407	my ($ob, $path) = @_;
408		1622
409	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)	1623	$self->in_memory (cf::MAP_SWAPPED);
410	for grep %$_, all_objects $ob;
411	};
412		1624
413	#############################################################################	1625	# need to save uniques path
414	# core extensions - in perl	1626	unless ($self->{deny_save}) {
		1627	my $uniq = $self->uniq_path; utf8::encode $uniq;
415		1628
416	my $delta_timer = Event->timer (	1629	$self->_save_objects ($uniq, cf::IO_UNIQUES)
417	parked => 1,	1630	if $uniq;
418	prio => Event::PRIO_HIGH,	1631	}
419	cb => sub { Event::unloop (undef) },
420	);
421		1632
422	sub sleep_delta($) {	1633	delete $cf::MAP{$self->path};
423	$delta_timer->at (Event::time + $_[0]);
424	$delta_timer->start;
425	Event::loop;
426	}
427		1634
428	=item cf::player::exists $login	1635	$self->clear;
429		1636
430	Returns true when the given account exists.	1637	$_->clear_links_to ($self) for values %cf::MAP;
431		1638
432	=cut	1639	$self->unlink_save;
433		1640	$self->destroy;
434	sub cf::player::exists($) {
435	cf::player::find $_[0]
436	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
437	}	1641	}
438		1642
		1643	my $nuke_counter = "aaaa";
		1644
		1645	sub nuke {
		1646	my ($self) = @_;
		1647
		1648	delete $cf::MAP{$self->path};
		1649
		1650	$self->unlink_save;
		1651
		1652	bless $self, "cf::map";
		1653	delete $self->{deny_reset};
		1654	$self->{deny_save} = 1;
		1655	$self->reset_timeout (1);
		1656	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1657
		1658	$cf::MAP{$self->path} = $self;
		1659
		1660	$self->reset; # polite request, might not happen
		1661	}
		1662
		1663	=item cf::map::unique_maps
		1664
		1665	Returns an arrayref of paths of all shared maps that have
		1666	instantiated unique items. May block.
		1667
		1668	=cut
		1669
		1670	sub unique_maps() {
		1671	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1672	or return;
		1673
		1674	my @paths;
		1675
		1676	for (@$files) {
		1677	utf8::decode $_;
		1678	next if /\.pst$/;
		1679	next unless /^$PATH_SEP/o;
		1680
		1681	push @paths, cf::map::normalise $_;
		1682	}
		1683
		1684	\@paths
		1685	}
		1686
		1687	package cf;
		1688
		1689	=back
		1690
		1691	=head3 cf::object
		1692
		1693	=cut
		1694
		1695	package cf::object;
		1696
		1697	=over 4
		1698
		1699	=item $ob->inv_recursive
		1700
		1701	Returns the inventory of the object _and_ their inventories, recursively.
		1702
		1703	=cut
		1704
		1705	sub inv_recursive_;
		1706	sub inv_recursive_ {
		1707	map { $_, inv_recursive_ $_->inv } @_
		1708	}
		1709
		1710	sub inv_recursive {
		1711	inv_recursive_ inv $_[0]
		1712	}
		1713
		1714	package cf;
		1715
		1716	=back
		1717
		1718	=head3 cf::object::player
		1719
		1720	=over 4
		1721
439	=item $player->reply ($npc, $msg[, $flags])	1722	=item $player_object->reply ($npc, $msg[, $flags])
440		1723
441	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1724	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
442	can be C<undef>. Does the right thing when the player is currently in a	1725	can be C<undef>. Does the right thing when the player is currently in a
443	dialogue with the given NPC character.	1726	dialogue with the given NPC character.
444		1727
445	=cut	1728	=cut
446		1729
447	# rough implementation of a future "reply" method that works	1730	# rough implementation of a future "reply" method that works
448	# with dialog boxes.	1731	# with dialog boxes.
		1732	#TODO: the first argument must go, split into a $npc->reply_to ( method
449	sub cf::object::player::reply($$$;$) {	1733	sub cf::object::player::reply($$$;$) {
450	my ($self, $npc, $msg, $flags) = @_;	1734	my ($self, $npc, $msg, $flags) = @_;
451		1735
452	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1736	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
453		1737
…		…
457	$msg = $npc->name . " says: $msg" if $npc;	1741	$msg = $npc->name . " says: $msg" if $npc;
458	$self->message ($msg, $flags);	1742	$self->message ($msg, $flags);
459	}	1743	}
460	}	1744	}
461		1745
462	=item $player->ext_reply ($msgid, $msgtype, %msg)	1746	=item $player_object->may ("access")
463		1747
464	Sends an ext reply to the player.	1748	Returns wether the given player is authorized to access resource "access"
		1749	(e.g. "command_wizcast").
465		1750
466	=cut	1751	=cut
467		1752
468	sub cf::player::ext_reply($$$%) {	1753	sub cf::object::player::may {
		1754	my ($self, $access) = @_;
		1755
		1756	$self->flag (cf::FLAG_WIZ) ||
		1757	(ref $cf::CFG{"may_$access"}
		1758	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1759	: $cf::CFG{"may_$access"})
		1760	}
		1761
		1762	=item $player_object->enter_link
		1763
		1764	Freezes the player and moves him/her to a special map (C<{link}>).
		1765
		1766	The player should be reasonably safe there for short amounts of time. You
		1767	I<MUST> call C<leave_link> as soon as possible, though.
		1768
		1769	Will never block.
		1770
		1771	=item $player_object->leave_link ($map, $x, $y)
		1772
		1773	Moves the player out of the special C<{link}> map onto the specified
		1774	map. If the map is not valid (or omitted), the player will be moved back
		1775	to the location he/she was before the call to C<enter_link>, or, if that
		1776	fails, to the emergency map position.
		1777
		1778	Might block.
		1779
		1780	=cut
		1781
		1782	sub link_map {
		1783	unless ($LINK_MAP) {
		1784	$LINK_MAP = cf::map::find "{link}"
		1785	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1786	$LINK_MAP->load;
		1787	}
		1788
		1789	$LINK_MAP
		1790	}
		1791
		1792	sub cf::object::player::enter_link {
		1793	my ($self) = @_;
		1794
		1795	$self->deactivate_recursive;
		1796
		1797	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1798
		1799	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1800	if $self->map;
		1801
		1802	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1803	}
		1804
		1805	sub cf::object::player::leave_link {
		1806	my ($self, $map, $x, $y) = @_;
		1807
		1808	my $link_pos = delete $self->{_link_pos};
		1809
		1810	unless ($map) {
		1811	# restore original map position
		1812	($map, $x, $y) = @{ $link_pos || [] };
		1813	$map = cf::map::find $map;
		1814
		1815	unless ($map) {
		1816	($map, $x, $y) = @$EMERGENCY_POSITION;
		1817	$map = cf::map::find $map
		1818	or die "FATAL: cannot load emergency map\n";
		1819	}
		1820	}
		1821
		1822	($x, $y) = (-1, -1)
		1823	unless (defined $x) && (defined $y);
		1824
		1825	# use -1 or undef as default coordinates, not 0, 0
		1826	($x, $y) = ($map->enter_x, $map->enter_y)
		1827	if $x <=0 && $y <= 0;
		1828
		1829	$map->load;
		1830	$map->load_diag;
		1831
		1832	return unless $self->contr->active;
		1833	$self->activate_recursive;
		1834
		1835	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1836	$self->enter_map ($map, $x, $y);
		1837	}
		1838
		1839	cf::player->attach (
		1840	on_logout => sub {
		1841	my ($pl) = @_;
		1842
		1843	# abort map switching before logout
		1844	if ($pl->ob->{_link_pos}) {
		1845	cf::sync_job {
		1846	$pl->ob->leave_link
		1847	};
		1848	}
		1849	},
		1850	on_login => sub {
		1851	my ($pl) = @_;
		1852
		1853	# try to abort aborted map switching on player login :)
		1854	# should happen only on crashes
		1855	if ($pl->ob->{_link_pos}) {
		1856	$pl->ob->enter_link;
		1857	(async {
		1858	$pl->ob->reply (undef,
		1859	"There was an internal problem at your last logout, "
		1860	. "the server will try to bring you to your intended destination in a second.",
		1861	cf::NDI_RED);
		1862	# we need this sleep as the login has a concurrent enter_exit running
		1863	# and this sleep increases chances of the player not ending up in scorn
		1864	Coro::Timer::sleep 1;
		1865	$pl->ob->leave_link;
		1866	})->prio (2);
		1867	}
		1868	},
		1869	);
		1870
		1871	=item $player_object->goto ($path, $x, $y)
		1872
		1873	=cut
		1874
		1875	sub cf::object::player::goto {
		1876	my ($self, $path, $x, $y) = @_;
		1877
		1878	$self->enter_link;
		1879
		1880	(async {
		1881	my $map = eval {
		1882	my $map = cf::map::find $path;
		1883	$map = $map->customise_for ($self) if $map;
		1884	$map
		1885	} or
		1886	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1887
		1888	$self->leave_link ($map, $x, $y);
		1889	})->prio (1);
		1890	}
		1891
		1892	=item $player_object->enter_exit ($exit_object)
		1893
		1894	=cut
		1895
		1896	sub parse_random_map_params {
		1897	my ($spec) = @_;
		1898
		1899	my $rmp = { # defaults
		1900	xsize => (cf::rndm 15, 40),
		1901	ysize => (cf::rndm 15, 40),
		1902	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1903	#layout => string,
		1904	};
		1905
		1906	for (split /\n/, $spec) {
		1907	my ($k, $v) = split /\s+/, $_, 2;
		1908
		1909	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1910	}
		1911
		1912	$rmp
		1913	}
		1914
		1915	sub prepare_random_map {
		1916	my ($exit) = @_;
		1917
		1918	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1919
		1920	# all this does is basically replace the /! path by
		1921	# a new random map path (?random/...) with a seed
		1922	# that depends on the exit object
		1923
		1924	my $rmp = parse_random_map_params $exit->msg;
		1925
		1926	if ($exit->map) {
		1927	$rmp->{region} = $exit->region->name;
		1928	$rmp->{origin_map} = $exit->map->path;
		1929	$rmp->{origin_x} = $exit->x;
		1930	$rmp->{origin_y} = $exit->y;
		1931	}
		1932
		1933	$rmp->{random_seed} ||= $exit->random_seed;
		1934
		1935	my $data = cf::to_json $rmp;
		1936	my $md5 = Digest::MD5::md5_hex $data;
		1937	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1938
		1939	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1940	aio_write $fh, 0, (length $data), $data, 0;
		1941	undef $fh;
		1942	aio_rename "$meta~", $meta;
		1943
		1944	$exit->slaying ("?random/$md5");
		1945	$exit->msg (undef);
		1946	}
		1947	}
		1948
		1949	sub cf::object::player::enter_exit {
469	my ($self, $id, %msg) = @_;	1950	my ($self, $exit) = @_;
470		1951
471	$msg{msgid} = $id;	1952	return unless $self->type == cf::PLAYER;
472		1953
473	$self->send ("ext " . to_json \%msg);	1954	if ($exit->slaying eq "/!") {
474	}	1955	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1956	cf::sync_job { prepare_random_map $exit };
		1957	}
475		1958
476	#############################################################################	1959	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
477	# map scripting support	1960	my $hp = $exit->stats->hp;
		1961	my $sp = $exit->stats->sp;
478		1962
		1963	$self->enter_link;
		1964
		1965	(async {
		1966	$self->deactivate_recursive; # just to be sure
		1967	unless (eval {
		1968	$self->goto ($slaying, $hp, $sp);
		1969
		1970	1;
		1971	}) {
		1972	$self->message ("Something went wrong deep within the crossfire server. "
		1973	. "I'll try to bring you back to the map you were before. "
		1974	. "Please report this to the dungeon master!",
		1975	cf::NDI_UNIQUE | cf::NDI_RED);
		1976
		1977	warn "ERROR in enter_exit: $@";
		1978	$self->leave_link;
		1979	}
		1980	})->prio (1);
		1981	}
		1982
		1983	=head3 cf::client
		1984
		1985	=over 4
		1986
		1987	=item $client->send_drawinfo ($text, $flags)
		1988
		1989	Sends a drawinfo packet to the client. Circumvents output buffering so
		1990	should not be used under normal circumstances.
		1991
		1992	=cut
		1993
		1994	sub cf::client::send_drawinfo {
		1995	my ($self, $text, $flags) = @_;
		1996
		1997	utf8::encode $text;
		1998	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1999	}
		2000
		2001
		2002	=item $success = $client->query ($flags, "text", \&cb)
		2003
		2004	Queues a query to the client, calling the given callback with
		2005	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2006	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2007
		2008	Queries can fail, so check the return code. Or don't, as queries will become
		2009	reliable at some point in the future.
		2010
		2011	=cut
		2012
		2013	sub cf::client::query {
		2014	my ($self, $flags, $text, $cb) = @_;
		2015
		2016	return unless $self->state == ST_PLAYING
		2017	|| $self->state == ST_SETUP
		2018	|| $self->state == ST_CUSTOM;
		2019
		2020	$self->state (ST_CUSTOM);
		2021
		2022	utf8::encode $text;
		2023	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2024
		2025	$self->send_packet ($self->{query_queue}[0][0])
		2026	if @{ $self->{query_queue} } == 1;
		2027	}
		2028
		2029	cf::client->attach (
		2030	on_reply => sub {
		2031	my ($ns, $msg) = @_;
		2032
		2033	# this weird shuffling is so that direct followup queries
		2034	# get handled first
		2035	my $queue = delete $ns->{query_queue}
		2036	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2037
		2038	(shift @$queue)->[1]->($msg);
		2039	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2040
		2041	push @{ $ns->{query_queue} }, @$queue;
		2042
		2043	if (@{ $ns->{query_queue} } == @$queue) {
		2044	if (@$queue) {
		2045	$ns->send_packet ($ns->{query_queue}[0][0]);
		2046	} else {
		2047	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2048	}
		2049	}
		2050	},
		2051	);
		2052
		2053	=item $client->async (\&cb)
		2054
		2055	Create a new coroutine, running the specified callback. The coroutine will
		2056	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2057	or loss of connection).
		2058
		2059	=cut
		2060
		2061	sub cf::client::async {
		2062	my ($self, $cb) = @_;
		2063
		2064	my $coro = &Coro::async ($cb);
		2065
		2066	$coro->on_destroy (sub {
		2067	delete $self->{_coro}{$coro+0};
		2068	});
		2069
		2070	$self->{_coro}{$coro+0} = $coro;
		2071
		2072	$coro
		2073	}
		2074
		2075	cf::client->attach (
		2076	on_destroy => sub {
		2077	my ($ns) = @_;
		2078
		2079	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2080	},
		2081	);
		2082
		2083	=back
		2084
		2085
		2086	=head2 SAFE SCRIPTING
		2087
		2088	Functions that provide a safe environment to compile and execute
		2089	snippets of perl code without them endangering the safety of the server
		2090	itself. Looping constructs, I/O operators and other built-in functionality
		2091	is not available in the safe scripting environment, and the number of
		2092	functions and methods that can be called is greatly reduced.
		2093
		2094	=cut
		2095
479	our $safe = new Safe "ext";	2096	our $safe = new Safe "safe";
480	our $safe_hole = new Safe::Hole;	2097	our $safe_hole = new Safe::Hole;
481		2098
482	$SIG{FPE} = 'IGNORE';	2099	$SIG{FPE} = 'IGNORE';
483		2100
484	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2101	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
485		2102
486	# here we export the classes and methods available to script code	2103	# here we export the classes and methods available to script code
487		2104
		2105	=pod
		2106
		2107	The following fucntions and emthods are available within a safe environment:
		2108
		2109	cf::object contr pay_amount pay_player map
		2110	cf::object::player player
		2111	cf::player peaceful
		2112	cf::map trigger
		2113
		2114	=cut
		2115
488	for (	2116	for (
489	["cf::object" => qw(contr pay_amount pay_player)],	2117	["cf::object" => qw(contr pay_amount pay_player map)],
490	["cf::object::player" => qw(player)],	2118	["cf::object::player" => qw(player)],
491	["cf::player" => qw(peaceful)],	2119	["cf::player" => qw(peaceful)],
		2120	["cf::map" => qw(trigger)],
492	) {	2121	) {
493	no strict 'refs';	2122	no strict 'refs';
494	my ($pkg, @funs) = @$_;	2123	my ($pkg, @funs) = @$_;
495	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2124	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
496	for @funs;	2125	for @funs;
497	}	2126	}
		2127
		2128	=over 4
		2129
		2130	=item @retval = safe_eval $code, [var => value, ...]
		2131
		2132	Compiled and executes the given perl code snippet. additional var/value
		2133	pairs result in temporary local (my) scalar variables of the given name
		2134	that are available in the code snippet. Example:
		2135
		2136	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2137
		2138	=cut
498		2139
499	sub safe_eval($;@) {	2140	sub safe_eval($;@) {
500	my ($code, %vars) = @_;	2141	my ($code, %vars) = @_;
501		2142
502	my $qcode = $code;	2143	my $qcode = $code;
503	$qcode =~ s/"/‟/g; # not allowed in #line filenames	2144	$qcode =~ s/"/‟/g; # not allowed in #line filenames
504	$qcode =~ s/\n/\\n/g;	2145	$qcode =~ s/\n/\\n/g;
505		2146
506	local $_;	2147	local $_;
507	local @ext::cf::_safe_eval_args = values %vars;	2148	local @safe::cf::_safe_eval_args = values %vars;
508		2149
509	$code =	2150	my $eval =
510	"do {\n"	2151	"do {\n"
511	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	2152	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
512	. "#line 0 \"{$qcode}\"\n"	2153	. "#line 0 \"{$qcode}\"\n"
513	. $code	2154	. $code
514	. "\n}"	2155	. "\n}"
515	;	2156	;
516		2157
517	sub_generation_inc;	2158	sub_generation_inc;
518	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	2159	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
519	sub_generation_inc;	2160	sub_generation_inc;
520		2161
		2162	if ($@) {
		2163	warn "$@";
		2164	warn "while executing safe code '$code'\n";
		2165	warn "with arguments " . (join " ", %vars) . "\n";
		2166	}
		2167
521	wantarray ? @res : $res[0]	2168	wantarray ? @res : $res[0]
522	}	2169	}
		2170
		2171	=item cf::register_script_function $function => $cb
		2172
		2173	Register a function that can be called from within map/npc scripts. The
		2174	function should be reasonably secure and should be put into a package name
		2175	like the extension.
		2176
		2177	Example: register a function that gets called whenever a map script calls
		2178	C<rent::overview>, as used by the C<rent> extension.
		2179
		2180	cf::register_script_function "rent::overview" => sub {
		2181	...
		2182	};
		2183
		2184	=cut
523		2185
524	sub register_script_function {	2186	sub register_script_function {
525	my ($fun, $cb) = @_;	2187	my ($fun, $cb) = @_;
526		2188
527	no strict 'refs';	2189	no strict 'refs';
528	*{"ext::$fun"} = $safe_hole->wrap ($cb);	2190	*{"safe::$fun"} = $safe_hole->wrap ($cb);
529	}	2191	}
		2192
		2193	=back
		2194
		2195	=cut
530		2196
531	#############################################################################	2197	#############################################################################
532	# initialisation
533		2198
534	register "<global>", __PACKAGE__;	2199	=head2 EXTENSION DATABASE SUPPORT
		2200
		2201	Crossfire maintains a very simple database for extension use. It can
		2202	currently store anything that can be serialised using Storable, which
		2203	excludes objects.
		2204
		2205	The parameter C<$family> should best start with the name of the extension
		2206	using it, it should be unique.
		2207
		2208	=over 4
		2209
		2210	=item $value = cf::db_get $family => $key
		2211
		2212	Returns a single value from the database.
		2213
		2214	=item cf::db_put $family => $key => $value
		2215
		2216	Stores the given C<$value> in the family.
		2217
		2218	=cut
		2219
		2220	our $DB;
		2221
		2222	sub db_init {
		2223	unless ($DB) {
		2224	$DB = BDB::db_create $DB_ENV;
		2225
		2226	cf::sync_job {
		2227	eval {
		2228	$DB->set_flags (BDB::CHKSUM);
		2229
		2230	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2231	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2232	cf::cleanup "db_open(db): $!" if $!;
		2233	};
		2234	cf::cleanup "db_open(db): $@" if $@;
		2235	};
		2236
		2237	my $path = cf::localdir . "/database.pst";
		2238	if (stat $path) {
		2239	cf::sync_job {
		2240	my $pst = Storable::retrieve $path;
		2241
		2242	cf::db_put (board => data => $pst->{board});
		2243	cf::db_put (guildrules => data => $pst->{guildrules});
		2244	cf::db_put (rent => balance => $pst->{rent}{balance});
		2245	BDB::db_env_txn_checkpoint $DB_ENV;
		2246
		2247	unlink $path;
		2248	};
		2249	}
		2250	}
		2251	}
		2252
		2253	sub db_get($$) {
		2254	my $key = "$_[0]/$_[1]";
		2255
		2256	cf::sync_job {
		2257	BDB::db_get $DB, undef, $key, my $data;
		2258
		2259	$! ? ()
		2260	: Compress::LZF::sthaw $data
		2261	}
		2262	}
		2263
		2264	sub db_put($$$) {
		2265	BDB::dbreq_pri 4;
		2266	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2267	}
		2268
		2269	#############################################################################
		2270	# the server's init and main functions
		2271
		2272	sub load_faces {
		2273	my $path = sprintf "%s/faces", cf::datadir;
		2274
		2275	warn "loading faces from $path\n";
		2276
		2277	my $faces;
		2278	0 < aio_load $path, $faces
		2279	or die "$path: $!";
		2280
		2281	Coro::cede;
		2282	$faces = Storable::thaw $faces;
		2283	Coro::cede;
		2284
		2285	while (my ($face, $info) = each %$faces) {
		2286	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2287	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2288	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2289	Coro::cede;
		2290	}
		2291
		2292	1
		2293	}
		2294
		2295	sub reload_resources {
		2296	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2297	or die "unable to load regions file\n";#d#
		2298	load_faces
		2299	or die "unable to load faces\n";#d#
		2300	}
		2301
		2302	sub init {
		2303	reload_resources;
		2304	}
		2305
		2306	sub cfg_load {
		2307	open my $fh, "<:utf8", cf::confdir . "/config"
		2308	or return;
		2309
		2310	local $/;
		2311	*CFG = YAML::Syck::Load <$fh>;
		2312
		2313	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2314
		2315	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2316	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2317
		2318	if (exists $CFG{mlockall}) {
		2319	eval {
		2320	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2321	and die "WARNING: m(un)lockall failed: $!\n";
		2322	};
		2323	warn $@ if $@;
		2324	}
		2325	}
		2326
		2327	sub main {
		2328	# we must not ever block the main coroutine
		2329	local $Coro::idle = sub {
		2330	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2331	(async {
		2332	Event::one_event;
		2333	})->prio (Coro::PRIO_MAX);
		2334	};
		2335
		2336	cfg_load;
		2337	db_init;
		2338	load_extensions;
		2339
		2340	$TICK_WATCHER->start;
		2341	Event::loop;
		2342	}
		2343
		2344	#############################################################################
		2345	# initialisation and cleanup
		2346
		2347	# install some emergency cleanup handlers
		2348	BEGIN {
		2349	for my $signal (qw(INT HUP TERM)) {
		2350	Event->signal (
		2351	reentrant => 0,
		2352	data => WF_AUTOCANCEL,
		2353	signal => $signal,
		2354	prio => 0,
		2355	cb => sub {
		2356	cf::cleanup "SIG$signal";
		2357	},
		2358	);
		2359	}
		2360	}
		2361
		2362	sub emergency_save() {
		2363	my $freeze_guard = cf::freeze_mainloop;
		2364
		2365	warn "enter emergency perl save\n";
		2366
		2367	cf::sync_job {
		2368	# use a peculiar iteration method to avoid tripping on perl
		2369	# refcount bugs in for. also avoids problems with players
		2370	# and maps saved/destroyed asynchronously.
		2371	warn "begin emergency player save\n";
		2372	for my $login (keys %cf::PLAYER) {
		2373	my $pl = $cf::PLAYER{$login} or next;
		2374	$pl->valid or next;
		2375	$pl->save;
		2376	}
		2377	warn "end emergency player save\n";
		2378
		2379	warn "begin emergency map save\n";
		2380	for my $path (keys %cf::MAP) {
		2381	my $map = $cf::MAP{$path} or next;
		2382	$map->valid or next;
		2383	$map->save;
		2384	}
		2385	warn "end emergency map save\n";
		2386
		2387	warn "begin emergency database checkpoint\n";
		2388	BDB::db_env_txn_checkpoint $DB_ENV;
		2389	warn "end emergency database checkpoint\n";
		2390	};
		2391
		2392	warn "leave emergency perl save\n";
		2393	}
		2394
		2395	sub post_cleanup {
		2396	my ($make_core) = @_;
		2397
		2398	warn Carp::longmess "post_cleanup backtrace"
		2399	if $make_core;
		2400	}
		2401
		2402	sub reload() {
		2403	# can/must only be called in main
		2404	if ($Coro::current != $Coro::main) {
		2405	warn "can only reload from main coroutine";
		2406	return;
		2407	}
		2408
		2409	warn "reloading...";
		2410
		2411	warn "entering sync_job";
		2412
		2413	cf::sync_job {
		2414	cf::write_runtime; # external watchdog should not bark
		2415	cf::emergency_save;
		2416	cf::write_runtime; # external watchdog should not bark
		2417
		2418	warn "syncing database to disk";
		2419	BDB::db_env_txn_checkpoint $DB_ENV;
		2420
		2421	# if anything goes wrong in here, we should simply crash as we already saved
		2422
		2423	warn "cancelling all WF_AUTOCANCEL watchers";
		2424	for (Event::all_watchers) {
		2425	$_->cancel if $_->data & WF_AUTOCANCEL;
		2426	}
		2427
		2428	warn "flushing outstanding aio requests";
		2429	for (;;) {
		2430	BDB::flush;
		2431	IO::AIO::flush;
		2432	Coro::cede;
		2433	last unless IO::AIO::nreqs || BDB::nreqs;
		2434	warn "iterate...";
		2435	}
		2436
		2437	++$RELOAD;
		2438
		2439	warn "cancelling all extension coros";
		2440	$_->cancel for values %EXT_CORO;
		2441	%EXT_CORO = ();
		2442
		2443	warn "removing commands";
		2444	%COMMAND = ();
		2445
		2446	warn "removing ext commands";
		2447	%EXTCMD = ();
		2448
		2449	warn "unloading/nuking all extensions";
		2450	for my $pkg (@EXTS) {
		2451	warn "... unloading $pkg";
		2452
		2453	if (my $cb = $pkg->can ("unload")) {
		2454	eval {
		2455	$cb->($pkg);
		2456	1
		2457	} or warn "$pkg unloaded, but with errors: $@";
		2458	}
		2459
		2460	warn "... nuking $pkg";
		2461	Symbol::delete_package $pkg;
		2462	}
		2463
		2464	warn "unloading all perl modules loaded from $LIBDIR";
		2465	while (my ($k, $v) = each %INC) {
		2466	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2467
		2468	warn "... unloading $k";
		2469	delete $INC{$k};
		2470
		2471	$k =~ s/\.pm$//;
		2472	$k =~ s/\//::/g;
		2473
		2474	if (my $cb = $k->can ("unload_module")) {
		2475	$cb->();
		2476	}
		2477
		2478	Symbol::delete_package $k;
		2479	}
		2480
		2481	warn "getting rid of safe::, as good as possible";
		2482	Symbol::delete_package "safe::$_"
		2483	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2484
		2485	warn "unloading cf.pm \"a bit\"";
		2486	delete $INC{"cf.pm"};
		2487
		2488	# don't, removes xs symbols, too,
		2489	# and global variables created in xs
		2490	#Symbol::delete_package __PACKAGE__;
		2491
		2492	warn "unload completed, starting to reload now";
		2493
		2494	warn "reloading cf.pm";
		2495	require cf;
		2496	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2497
		2498	warn "loading config and database again";
		2499	cf::cfg_load;
		2500
		2501	warn "loading extensions";
		2502	cf::load_extensions;
		2503
		2504	warn "reattaching attachments to objects/players";
		2505	_global_reattach; # objects, sockets
		2506	warn "reattaching attachments to maps";
		2507	reattach $_ for values %MAP;
		2508	warn "reattaching attachments to players";
		2509	reattach $_ for values %PLAYER;
		2510
		2511	warn "loading reloadable resources";
		2512	reload_resources;
		2513
		2514	warn "leaving sync_job";
		2515
		2516	1
		2517	} or do {
		2518	warn $@;
		2519	warn "error while reloading, exiting.";
		2520	exit 1;
		2521	};
		2522
		2523	warn "reloaded";
		2524	};
		2525
		2526	our $RELOAD_WATCHER; # used only during reload
		2527
		2528	register_command "reload" => sub {
		2529	my ($who, $arg) = @_;
		2530
		2531	if ($who->flag (FLAG_WIZ)) {
		2532	$who->message ("reloading server.");
		2533
		2534	# doing reload synchronously and two reloads happen back-to-back,
		2535	# coro crashes during coro_state_free->destroy here.
		2536
		2537	$RELOAD_WATCHER ||= Event->timer (
		2538	reentrant => 0,
		2539	after => 0,
		2540	data => WF_AUTOCANCEL,
		2541	cb => sub {
		2542	reload;
		2543	undef $RELOAD_WATCHER;
		2544	},
		2545	);
		2546	}
		2547	};
535		2548
536	unshift @INC, $LIBDIR;	2549	unshift @INC, $LIBDIR;
537		2550
538	load_extensions;	2551	my $bug_warning = 0;
		2552
		2553	$TICK_WATCHER = Event->timer (
		2554	reentrant => 0,
		2555	parked => 1,
		2556	prio => 0,
		2557	at => $NEXT_TICK || $TICK,
		2558	data => WF_AUTOCANCEL,
		2559	cb => sub {
		2560	if ($Coro::current != $Coro::main) {
		2561	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2562	unless ++$bug_warning > 10;
		2563	return;
		2564	}
		2565
		2566	$NOW = Event::time;
		2567
		2568	cf::server_tick; # one server iteration
		2569	$RUNTIME += $TICK;
		2570	$NEXT_TICK += $TICK;
		2571
		2572	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2573	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2574	Coro::async_pool {
		2575	write_runtime
		2576	or warn "ERROR: unable to write runtime file: $!";
		2577	};
		2578	}
		2579
		2580	$WAIT_FOR_TICK->broadcast;
		2581	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2582
		2583	# my $AFTER = Event::time;
		2584	# warn $AFTER - $NOW;#d#
		2585
		2586	# if we are delayed by four ticks or more, skip them all
		2587	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		2588
		2589	$TICK_WATCHER->at ($NEXT_TICK);
		2590	$TICK_WATCHER->start;
		2591	},
		2592	);
		2593
		2594	{
		2595	BDB::max_poll_time $TICK * 0.1;
		2596	$BDB_POLL_WATCHER = Event->io (
		2597	reentrant => 0,
		2598	fd => BDB::poll_fileno,
		2599	poll => 'r',
		2600	prio => 0,
		2601	data => WF_AUTOCANCEL,
		2602	cb => \&BDB::poll_cb,
		2603	);
		2604	BDB::min_parallel 8;
		2605
		2606	BDB::set_sync_prepare {
		2607	my $status;
		2608	my $current = $Coro::current;
		2609	(
		2610	sub {
		2611	$status = $!;
		2612	$current->ready; undef $current;
		2613	},
		2614	sub {
		2615	Coro::schedule while defined $current;
		2616	$! = $status;
		2617	},
		2618	)
		2619	};
		2620
		2621	unless ($DB_ENV) {
		2622	$DB_ENV = BDB::db_env_create;
		2623
		2624	cf::sync_job {
		2625	eval {
		2626	BDB::db_env_open
		2627	$DB_ENV,
		2628	$BDB_ENV_DIR,
		2629	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2630	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2631	0666;
		2632
		2633	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2634
		2635	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2636	$DB_ENV->set_lk_detect;
		2637	};
		2638
		2639	cf::cleanup "db_env_open(db): $@" if $@;
		2640	};
		2641	}
		2642	}
		2643
		2644	{
		2645	IO::AIO::min_parallel 8;
		2646
		2647	undef $Coro::AIO::WATCHER;
		2648	IO::AIO::max_poll_time $TICK * 0.1;
		2649	$AIO_POLL_WATCHER = Event->io (
		2650	reentrant => 0,
		2651	data => WF_AUTOCANCEL,
		2652	fd => IO::AIO::poll_fileno,
		2653	poll => 'r',
		2654	prio => 6,
		2655	cb => \&IO::AIO::poll_cb,
		2656	);
		2657	}
		2658
		2659	END { cf::emergency_save }
539		2660
540	1	2661	1
541		2662

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