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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 1.233 by root, Wed Apr 4 02:20:27 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;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
		14	use Coro 3.52 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21
		22	use BDB ();
		23	use Data::Dumper;
		24	use Digest::MD5;
		25	use Fcntl;
		26	use YAML::Syck ();
		27	use IO::AIO 2.32 ();
10	use Time::HiRes;	28	use Time::HiRes;
11	use Event;	29	use Compress::LZF;
		30
		31	# configure various modules to our taste
		32	#
		33	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		34	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		35
12	$Event::Eval = 1; # no idea why this is required, but it is	36	$Event::Eval = 1; # no idea why this is required, but it is
13		37
14	use strict;	38	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		39	$YAML::Syck::ImplicitUnicode = 1;
15		40
16	our %COMMAND;	41	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		42
		43	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		44
		45	our %COMMAND = ();
		46	our %COMMAND_TIME = ();
		47
		48	our @EXTS = (); # list of extension package names
		49	our %EXTCMD = ();
		50	our %EXT_CORO = (); # coroutines bound to extensions
		51	our %EXT_MAP = (); # pluggable maps
		52
		53	our $RELOAD; # number of reloads so far
17	our @EVENT;	54	our @EVENT;
18	our %PROP_TYPE;	55	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;	56
20	our $LIBDIR = maps_directory "perl";	57	our $TICK = MAX_TIME * 1e-6;
		58	our $TICK_WATCHER;
		59	our $AIO_POLL_WATCHER;
		60	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
		61	our $NEXT_TICK;
		62	our $NOW;
		63	our $USE_FSYNC = 1; # use fsync to write maps - default off
		64
		65	our $BDB_POLL_WATCHER;
		66	our $DB_ENV;
		67
		68	our %CFG;
		69
		70	our $UPTIME; $UPTIME ||= time;
		71	our $RUNTIME;
		72
		73	our %PLAYER; # all users
		74	our %MAP; # all maps
		75	our $LINK_MAP; # the special {link} map, which is always available
		76	our $RANDOM_MAPS = cf::localdir . "/random";
		77	our $BDB_ENV_DIR = cf::localdir . "/db";
		78
		79	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		80	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		81
		82	# used to convert map paths into valid unix filenames by replacing / by ∕
		83	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		84
		85	binmode STDOUT;
		86	binmode STDERR;
		87
		88	# read virtual server time, if available
		89	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		90	open my $fh, "<", cf::localdir . "/runtime"
		91	or die "unable to read runtime file: $!";
		92	$RUNTIME = <$fh> + 0.;
		93	}
		94
		95	mkdir cf::localdir;
		96	mkdir cf::localdir . "/" . cf::playerdir;
		97	mkdir cf::localdir . "/" . cf::tmpdir;
		98	mkdir cf::localdir . "/" . cf::uniquedir;
		99	mkdir $RANDOM_MAPS;
		100	mkdir $BDB_ENV_DIR;
		101
		102	our $EMERGENCY_POSITION;
		103
		104	sub cf::map::normalise;
		105
		106	#############################################################################
		107
		108	=head2 GLOBAL VARIABLES
		109
		110	=over 4
		111
		112	=item $cf::UPTIME
		113
		114	The timestamp of the server start (so not actually an uptime).
		115
		116	=item $cf::RUNTIME
		117
		118	The time this server has run, starts at 0 and is increased by $cf::TICK on
		119	every server tick.
		120
		121	=item $cf::LIBDIR
		122
		123	The perl library directory, where extensions and cf-specific modules can
		124	be found. It will be added to C<@INC> automatically.
		125
		126	=item $cf::NOW
		127
		128	The time of the last (current) server tick.
		129
		130	=item $cf::TICK
		131
		132	The interval between server ticks, in seconds.
		133
		134	=item %cf::CFG
		135
		136	Configuration for the server, loaded from C</etc/crossfire/config>, or
		137	from wherever your confdir points to.
		138
		139	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		140
		141	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		142	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		143	processing has been done. Call C<< ->wait >> on them to maximise the
		144	window of cpu time available, or simply to synchronise to the server tick.
		145
		146	=back
		147
		148	=cut
21		149
22	BEGIN {	150	BEGIN {
23	@EVENT = map lc, @EVENT;
24
25	*CORE::GLOBAL::warn = sub {	151	*CORE::GLOBAL::warn = sub {
26	my $msg = join "", @_;	152	my $msg = join "", @_;
		153	utf8::encode $msg;
		154
27	$msg .= "\n"	155	$msg .= "\n"
28	unless $msg =~ /\n$/;	156	unless $msg =~ /\n$/;
29		157
30	print STDERR "cfperl: $msg";
31	LOG llevError, "cfperl: $msg";	158	LOG llevError, $msg;
32	};	159	};
33	}	160	}
34		161
35	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	162	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		163	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		164	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		165	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		166	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		167	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
36		168
37	# generate property mutators	169	# we bless all objects into (empty) derived classes to force a method lookup
38	sub prop_gen {	170	# within the Safe compartment.
39	my ($prefix, $class) = @_;	171	for my $pkg (qw(
40		172	cf::global cf::attachable
		173	cf::object cf::object::player
		174	cf::client cf::player
		175	cf::arch cf::living
		176	cf::map cf::party cf::region
		177	)) {
41	no strict 'refs';	178	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"} = $pkg;	179	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79	}	180	}
80		181
81	$Event::DIED = sub {	182	$Event::DIED = sub {
82	warn "error in event callback: @_";	183	warn "error in event callback: @_";
83	};	184	};
84		185
85	my %ext_pkg;	186	=head2 UTILITY FUNCTIONS
86	my @exts;
87	my @hook;
88	my %command;
89	my %extcmd;
90		187
91	sub inject_event {	188	=over 4
92	my $extension = shift;	189
		190	=item dumpval $ref
		191
		192	=cut
		193
		194	sub dumpval {
		195	eval {
		196	local $SIG{__DIE__};
		197	my $d;
		198	if (1) {
		199	$d = new Data::Dumper([$_[0]], ["*var"]);
		200	$d->Terse(1);
		201	$d->Indent(2);
		202	$d->Quotekeys(0);
		203	$d->Useqq(1);
		204	#$d->Bless(...);
		205	$d->Seen($_[1]) if @_ > 1;
		206	$d = $d->Dump();
		207	}
		208	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		209	$d
		210	} || "[unable to dump $_[0]: '$@']";
		211	}
		212
		213	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		214
		215	=item $ref = cf::from_json $json
		216
		217	Converts a JSON string into the corresponding perl data structure.
		218
		219	=item $json = cf::to_json $ref
		220
		221	Converts a perl data structure into its JSON representation.
		222
		223	=item cf::lock_wait $string
		224
		225	Wait until the given lock is available. See cf::lock_acquire.
		226
		227	=item my $lock = cf::lock_acquire $string
		228
		229	Wait until the given lock is available and then acquires it and returns
		230	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		231	for example when the coroutine gets canceled), the lock is automatically
		232	returned.
		233
		234	Lock names should begin with a unique identifier (for example, cf::map::find
		235	uses map_find and cf::map::load uses map_load).
		236
		237	=cut
		238
		239	our %LOCK;
		240
		241	sub lock_wait($) {
		242	my ($key) = @_;
		243
		244	# wait for lock, if any
		245	while ($LOCK{$key}) {
		246	push @{ $LOCK{$key} }, $Coro::current;
		247	Coro::schedule;
		248	}
		249	}
		250
		251	sub lock_acquire($) {
		252	my ($key) = @_;
		253
		254	# wait, to be sure we are not locked
		255	lock_wait $key;
		256
		257	$LOCK{$key} = [];
		258
		259	Coro::guard {
		260	# wake up all waiters, to be on the safe side
		261	$_->ready for @{ delete $LOCK{$key} };
		262	}
		263	}
		264
		265	sub freeze_mainloop {
		266	return unless $TICK_WATCHER->is_active;
		267
		268	my $guard = Coro::guard {
		269	$TICK_WATCHER->start;
		270	};
		271	$TICK_WATCHER->stop;
		272	$guard
		273	}
		274
		275	=item cf::async { BLOCK }
		276
		277	Currently the same as Coro::async_pool, meaning you cannot use
		278	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		279	thing you are allowed to do is call C<prio> on it.
		280
		281	=cut
		282
		283	BEGIN { *async = \&Coro::async_pool }
		284
		285	=item cf::sync_job { BLOCK }
		286
		287	The design of crossfire+ requires that the main coro ($Coro::main) is
		288	always able to handle events or runnable, as crossfire+ is only partly
		289	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		290
		291	If it must be done, put the blocking parts into C<sync_job>. This will run
		292	the given BLOCK in another coroutine while waiting for the result. The
		293	server will be frozen during this time, so the block should either finish
		294	fast or be very important.
		295
		296	=cut
		297
		298	sub sync_job(&) {
		299	my ($job) = @_;
		300
		301	if ($Coro::current == $Coro::main) {
		302	# this is the main coro, too bad, we have to block
		303	# till the operation succeeds, freezing the server :/
		304
		305	# TODO: use suspend/resume instead
		306	# (but this is cancel-safe)
		307	my $freeze_guard = freeze_mainloop;
		308
		309	my $busy = 1;
		310	my @res;
		311
		312	(async {
		313	@res = eval { $job->() };
		314	warn $@ if $@;
		315	undef $busy;
		316	})->prio (Coro::PRIO_MAX);
		317
		318	while ($busy) {
		319	Coro::cede or Event::one_event;
		320	}
		321
		322	wantarray ? @res : $res[0]
		323	} else {
		324	# we are in another coroutine, how wonderful, everything just works
		325
		326	$job->()
		327	}
		328	}
		329
		330	=item $coro = cf::async_ext { BLOCK }
		331
		332	Like async, but this coro is automatically being canceled when the
		333	extension calling this is being unloaded.
		334
		335	=cut
		336
		337	sub async_ext(&) {
93	my $event_code = shift;	338	my $cb = shift;
94		339
95	my $cb = $hook[$event_code]{$extension}	340	my $coro = &Coro::async ($cb);
		341
		342	$coro->on_destroy (sub {
		343	delete $EXT_CORO{$coro+0};
		344	});
		345	$EXT_CORO{$coro+0} = $coro;
		346
		347	$coro
		348	}
		349
		350	sub write_runtime {
		351	my $guard = cf::lock_acquire "write_runtime";
		352
		353	my $runtime = cf::localdir . "/runtime";
		354
		355	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
96	or return;	356	or return;
97		357
98	&$cb	358	my $value = $cf::RUNTIME + 90 + 10;
99	}	359	# 10 is the runtime save interval, for a monotonic clock
		360	# 60 allows for the watchdog to kill the server.
100		361
101	sub inject_global_event {	362	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		363	and return;
		364
		365	# always fsync - this file is important
		366	aio_fsync $fh
		367	and return;
		368
		369	close $fh
		370	or return;
		371
		372	aio_rename "$runtime~", $runtime
		373	and return;
		374
		375	1
		376	}
		377
		378	=item cf::datalog type => key => value, ...
		379
		380	Log a datalog packet of the given type with the given key-value pairs.
		381
		382	=cut
		383
		384	sub datalog($@) {
		385	my ($type, %kv) = @_;
		386	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		387	}
		388
		389	=back
		390
		391	=cut
		392
		393	#############################################################################
		394
		395	=head2 ATTACHABLE OBJECTS
		396
		397	Many objects in crossfire are so-called attachable objects. That means you can
		398	attach callbacks/event handlers (a collection of which is called an "attachment")
		399	to it. All such attachable objects support the following methods.
		400
		401	In the following description, CLASS can be any of C<global>, C<object>
		402	C<player>, C<client> or C<map> (i.e. the attachable objects in
		403	crossfire+).
		404
		405	=over 4
		406
		407	=item $attachable->attach ($attachment, key => $value...)
		408
		409	=item $attachable->detach ($attachment)
		410
		411	Attach/detach a pre-registered attachment to a specific object and give it
		412	the specified key/value pairs as arguments.
		413
		414	Example, attach a minesweeper attachment to the given object, making it a
		415	10x10 minesweeper game:
		416
		417	$obj->attach (minesweeper => width => 10, height => 10);
		418
		419	=item $bool = $attachable->attached ($name)
		420
		421	Checks wether the named attachment is currently attached to the object.
		422
		423	=item cf::CLASS->attach ...
		424
		425	=item cf::CLASS->detach ...
		426
		427	Define an anonymous attachment and attach it to all objects of the given
		428	CLASS. See the next function for an explanation of its arguments.
		429
		430	You can attach to global events by using the C<cf::global> class.
		431
		432	Example, log all player logins:
		433
		434	cf::player->attach (
		435	on_login => sub {
		436	my ($pl) = @_;
		437	...
		438	},
		439	);
		440
		441	Example, attach to the jeweler skill:
		442
		443	cf::object->attach (
		444	type => cf::SKILL,
		445	subtype => cf::SK_JEWELER,
		446	on_use_skill => sub {
		447	my ($sk, $ob, $part, $dir, $msg) = @_;
		448	...
		449	},
		450	);
		451
		452	=item cf::CLASS::attachment $name, ...
		453
		454	Register an attachment by C<$name> through which attachable objects of the
		455	given CLASS can refer to this attachment.
		456
		457	Some classes such as crossfire maps and objects can specify attachments
		458	that are attached at load/instantiate time, thus the need for a name.
		459
		460	These calls expect any number of the following handler/hook descriptions:
		461
		462	=over 4
		463
		464	=item prio => $number
		465
		466	Set the priority for all following handlers/hooks (unless overwritten
		467	by another C<prio> setting). Lower priority handlers get executed
		468	earlier. The default priority is C<0>, and many built-in handlers are
		469	registered at priority C<-1000>, so lower priorities should not be used
		470	unless you know what you are doing.
		471
		472	=item type => $type
		473
		474	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		475	given type of objects only (the additional parameter C<subtype> can be
		476	used to further limit to the given subtype).
		477
		478	=item on_I<event> => \&cb
		479
		480	Call the given code reference whenever the named event happens (event is
		481	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		482	handlers are recognised generally depends on the type of object these
		483	handlers attach to).
		484
		485	See F<include/eventinc.h> for the full list of events supported, and their
		486	class.
		487
		488	=item package => package::
		489
		490	Look for sub functions of the name C<< on_I<event> >> in the given
		491	package and register them. Only handlers for eevents supported by the
		492	object/class are recognised.
		493
		494	=back
		495
		496	Example, define an attachment called "sockpuppet" that calls the given
		497	event handler when a monster attacks:
		498
		499	cf::object::attachment sockpuppet =>
		500	on_skill_attack => sub {
		501	my ($self, $victim) = @_;
		502	...
		503	}
		504	}
		505
		506	=item $attachable->valid
		507
		508	Just because you have a perl object does not mean that the corresponding
		509	C-level object still exists. If you try to access an object that has no
		510	valid C counterpart anymore you get an exception at runtime. This method
		511	can be used to test for existence of the C object part without causing an
		512	exception.
		513
		514	=cut
		515
		516	# the following variables are defined in .xs and must not be re-created
		517	our @CB_GLOBAL = (); # registry for all global events
		518	our @CB_ATTACHABLE = (); # registry for all attachables
		519	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		520	our @CB_PLAYER = ();
		521	our @CB_CLIENT = ();
		522	our @CB_TYPE = (); # registry for type (cf-object class) based events
		523	our @CB_MAP = ();
		524
		525	my %attachment;
		526
		527	sub cf::attachable::thawer_merge {
		528	# simply override everything except _meta
		529	local $_[0]{_meta};
		530	%{$_[0]} = %{$_[1]};
		531	}
		532
		533	sub _attach_cb($$$$) {
		534	my ($registry, $event, $prio, $cb) = @_;
		535
		536	use sort 'stable';
		537
		538	$cb = [$prio, $cb];
		539
		540	@{$registry->[$event]} = sort
		541	{ $a->[0] cmp $b->[0] }
		542	@{$registry->[$event] || []}, $cb;
		543	}
		544
		545	# hack
		546	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		547
		548	# attach handles attaching event callbacks
		549	# the only thing the caller has to do is pass the correct
		550	# registry (== where the callback attaches to).
		551	sub _attach {
		552	my ($registry, $klass, @arg) = @_;
		553
		554	my $object_type;
		555	my $prio = 0;
		556	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		557
		558	#TODO: get rid of this hack
		559	if ($attachable_klass{$klass}) {
		560	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		561	}
		562
		563	while (@arg) {
		564	my $type = shift @arg;
		565
		566	if ($type eq "prio") {
		567	$prio = shift @arg;
		568
		569	} elsif ($type eq "type") {
		570	$object_type = shift @arg;
		571	$registry = $CB_TYPE[$object_type] ||= [];
		572
		573	} elsif ($type eq "subtype") {
		574	defined $object_type or Carp::croak "subtype specified without type";
		575	my $object_subtype = shift @arg;
		576	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		577
		578	} elsif ($type eq "package") {
		579	my $pkg = shift @arg;
		580
		581	while (my ($name, $id) = each %cb_id) {
		582	if (my $cb = $pkg->can ($name)) {
		583	_attach_cb $registry, $id, $prio, $cb;
		584	}
		585	}
		586
		587	} elsif (exists $cb_id{$type}) {
		588	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		589
		590	} elsif (ref $type) {
		591	warn "attaching objects not supported, ignoring.\n";
		592
		593	} else {
		594	shift @arg;
		595	warn "attach argument '$type' not supported, ignoring.\n";
		596	}
		597	}
		598	}
		599
		600	sub _object_attach {
		601	my ($obj, $name, %arg) = @_;
		602
		603	return if exists $obj->{_attachment}{$name};
		604
		605	if (my $attach = $attachment{$name}) {
		606	my $registry = $obj->registry;
		607
		608	for (@$attach) {
		609	my ($klass, @attach) = @$_;
		610	_attach $registry, $klass, @attach;
		611	}
		612
		613	$obj->{$name} = \%arg;
		614	} else {
		615	warn "object uses attachment '$name' that is not available, postponing.\n";
		616	}
		617
		618	$obj->{_attachment}{$name} = undef;
		619	}
		620
		621	sub cf::attachable::attach {
		622	if (ref $_[0]) {
		623	_object_attach @_;
		624	} else {
		625	_attach shift->_attach_registry, @_;
		626	}
		627	};
		628
		629	# all those should be optimised
		630	sub cf::attachable::detach {
		631	my ($obj, $name) = @_;
		632
		633	if (ref $obj) {
		634	delete $obj->{_attachment}{$name};
		635	reattach ($obj);
		636	} else {
		637	Carp::croak "cannot, currently, detach class attachments";
		638	}
		639	};
		640
		641	sub cf::attachable::attached {
		642	my ($obj, $name) = @_;
		643
		644	exists $obj->{_attachment}{$name}
		645	}
		646
		647	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		648	eval "#line " . __LINE__ . " 'cf.pm'
		649	sub cf::\L$klass\E::_attach_registry {
		650	(\\\@CB_$klass, KLASS_$klass)
		651	}
		652
		653	sub cf::\L$klass\E::attachment {
		654	my \$name = shift;
		655
		656	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		657	}
		658	";
		659	die if $@;
		660	}
		661
		662	our $override;
		663	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		664
		665	sub override {
		666	$override = 1;
		667	@invoke_results = ();
		668	}
		669
		670	sub do_invoke {
102	my $event = shift;	671	my $event = shift;
		672	my $callbacks = shift;
103		673
104	my $cb = $hook[$event]	674	@invoke_results = ();
		675
		676	local $override;
		677
		678	for (@$callbacks) {
		679	eval { &{$_->[1]} };
		680
		681	if ($@) {
		682	warn "$@";
		683	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		684	override;
		685	}
		686
		687	return 1 if $override;
		688	}
		689
		690	0
		691	}
		692
		693	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		694
		695	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		696
		697	Generate an object-specific event with the given arguments.
		698
		699	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		700	removed in future versions), and there is no public API to access override
		701	results (if you must, access C<@cf::invoke_results> directly).
		702
		703	=back
		704
		705	=cut
		706
		707	#############################################################################
		708	# object support
		709
		710	sub reattach {
		711	# basically do the same as instantiate, without calling instantiate
		712	my ($obj) = @_;
		713
		714	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		715
		716	my $registry = $obj->registry;
		717
		718	@$registry = ();
		719
		720	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		721
		722	for my $name (keys %{ $obj->{_attachment} || {} }) {
		723	if (my $attach = $attachment{$name}) {
		724	for (@$attach) {
		725	my ($klass, @attach) = @$_;
		726	_attach $registry, $klass, @attach;
		727	}
		728	} else {
		729	warn "object uses attachment '$name' that is not available, postponing.\n";
		730	}
		731	}
		732	}
		733
		734	cf::attachable->attach (
		735	prio => -1000000,
		736	on_instantiate => sub {
		737	my ($obj, $data) = @_;
		738
		739	$data = from_json $data;
		740
		741	for (@$data) {
		742	my ($name, $args) = @$_;
		743
		744	$obj->attach ($name, %{$args || {} });
		745	}
		746	},
		747	on_reattach => \&reattach,
		748	on_clone => sub {
		749	my ($src, $dst) = @_;
		750
		751	@{$dst->registry} = @{$src->registry};
		752
		753	%$dst = %$src;
		754
		755	%{$dst->{_attachment}} = %{$src->{_attachment}}
		756	if exists $src->{_attachment};
		757	},
		758	);
		759
		760	sub object_freezer_save {
		761	my ($filename, $rdata, $objs) = @_;
		762
		763	sync_job {
		764	if (length $$rdata) {
		765	warn sprintf "saving %s (%d,%d)\n",
		766	$filename, length $$rdata, scalar @$objs;
		767
		768	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		769	chmod SAVE_MODE, $fh;
		770	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		771	aio_fsync $fh if $cf::USE_FSYNC;
		772	close $fh;
		773
		774	if (@$objs) {
		775	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		776	chmod SAVE_MODE, $fh;
		777	my $data = Storable::nfreeze { version => 1, objs => $objs };
		778	aio_write $fh, 0, (length $data), $data, 0;
		779	aio_fsync $fh if $cf::USE_FSYNC;
		780	close $fh;
		781	aio_rename "$filename.pst~", "$filename.pst";
		782	}
		783	} else {
		784	aio_unlink "$filename.pst";
		785	}
		786
		787	aio_rename "$filename~", $filename;
		788	} else {
		789	warn "FATAL: $filename~: $!\n";
		790	}
		791	} else {
		792	aio_unlink $filename;
		793	aio_unlink "$filename.pst";
		794	}
		795	}
		796	}
		797
		798	sub object_freezer_as_string {
		799	my ($rdata, $objs) = @_;
		800
		801	use Data::Dumper;
		802
		803	$$rdata . Dumper $objs
		804	}
		805
		806	sub object_thawer_load {
		807	my ($filename) = @_;
		808
		809	my ($data, $av);
		810
		811	(aio_load $filename, $data) >= 0
105	or return;	812	or return;
106		813
107	List::Util::max map &$_, values %$cb	814	unless (aio_stat "$filename.pst") {
108	}	815	(aio_load "$filename.pst", $av) >= 0
109		816	or return;
110	sub inject_command {	817	$av = eval { (Storable::thaw $av)->{objs} };
111	my ($name, $obj, $params) = @_;
112
113	for my $cmd (@{ $command{$name} }) {
114	$cmd->[1]->($obj, $params);
115	}	818	}
116		819
117	-1	820	warn sprintf "loading %s (%d)\n",
		821	$filename, length $data, scalar @{$av || []};#d#
		822	return ($data, $av);
118	}	823	}
		824
		825	#############################################################################
		826	# command handling &c
		827
		828	=item cf::register_command $name => \&callback($ob,$args);
		829
		830	Register a callback for execution when the client sends the user command
		831	$name.
		832
		833	=cut
119		834
120	sub register_command {	835	sub register_command {
121	my ($name, $time, $cb) = @_;	836	my ($name, $cb) = @_;
122		837
123	my $caller = caller;	838	my $caller = caller;
124	#warn "registering command '$name/$time' to '$caller'";	839	#warn "registering command '$name/$time' to '$caller'";
125		840
126	push @{ $command{$name} }, [$time, $cb, $caller];	841	push @{ $COMMAND{$name} }, [$caller, $cb];
127	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
128	}	842	}
		843
		844	=item cf::register_extcmd $name => \&callback($pl,$packet);
		845
		846	Register a callbackf ro execution when the client sends an extcmd packet.
		847
		848	If the callback returns something, it is sent back as if reply was being
		849	called.
		850
		851	=cut
129		852
130	sub register_extcmd {	853	sub register_extcmd {
131	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
132		855
133	my $caller = caller;	856	$EXTCMD{$name} = $cb;
134	#warn "registering extcmd '$name' to '$caller'";
135
136	$extcmd{$name} = [$cb, $caller];
137	}	857	}
138		858
139	sub register {	859	cf::player->attach (
140	my ($base, $pkg) = @_;	860	on_command => sub {
		861	my ($pl, $name, $params) = @_;
141		862
142	for my $idx (0 .. $#EVENT) {	863	my $cb = $COMMAND{$name}
143	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	864	or return;
144	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	865
145	$hook[$idx]{$base} = $ref;	866	for my $cmd (@$cb) {
		867	$cmd->[1]->($pl->ob, $params);
146	}	868	}
		869
		870	cf::override;
147	}	871	},
148	}	872	on_extcmd => sub {
		873	my ($pl, $buf) = @_;
		874
		875	my $msg = eval { from_json $buf };
		876
		877	if (ref $msg) {
		878	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		879	if (my %reply = $cb->($pl, $msg)) {
		880	$pl->ext_reply ($msg->{msgid}, %reply);
		881	}
		882	}
		883	} else {
		884	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		885	}
		886
		887	cf::override;
		888	},
		889	);
149		890
150	sub load_extension {	891	sub load_extension {
151	my ($path) = @_;	892	my ($path) = @_;
152		893
153	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	894	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
154	my $base = $1;	895	my $base = $1;
155	my $pkg = $1;	896	my $pkg = $1;
156	$pkg =~ s/[^[:word:]]/_/g;	897	$pkg =~ s/[^[:word:]]/_/g;
157	$pkg = "cf::ext::$pkg";	898	$pkg = "ext::$pkg";
158		899
159	warn "loading '$path' into '$pkg'\n";	900	warn "... loading '$path' into '$pkg'\n";
160		901
161	open my $fh, "<:utf8", $path	902	open my $fh, "<:utf8", $path
162	or die "$path: $!";	903	or die "$path: $!";
163		904
164	my $source =	905	my $source =
165	"package $pkg; use strict; use utf8;\n"	906	"package $pkg; use strict; use utf8;\n"
166	. "#line 1 \"$path\"\n{\n"	907	. "#line 1 \"$path\"\n{\n"
167	. (do { local $/; <$fh> })	908	. (do { local $/; <$fh> })
168	. "\n};\n1";	909	. "\n};\n1";
169		910
170	eval $source	911	unless (eval $source) {
171	or die "$path: $@";	912	my $msg = $@ ? "$path: $@\n"
		913	: "extension disabled.\n";
		914	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		915	warn $@;
		916	warn "mandatory extension failed to load, exiting.\n";
		917	exit 1;
		918	}
		919	die $@;
		920	}
172		921
173	push @exts, $pkg;	922	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	}	923	}
219		924
220	sub load_extensions {	925	sub load_extensions {
221	my $LIBDIR = maps_directory "perl";
222
223	for my $ext (<$LIBDIR/*.ext>) {	926	for my $ext (<$LIBDIR/*.ext>) {
224	next unless -r $ext;	927	next unless -r $ext;
225	eval {	928	eval {
226	load_extension $ext;	929	load_extension $ext;
227	1	930	1
228	} or warn "$ext not loaded: $@";	931	} or warn "$ext not loaded: $@";
229	}	932	}
230	}	933	}
231		934
232	register_command "perl-reload", 0, sub {	935	#############################################################################
		936
		937	=head2 CORE EXTENSIONS
		938
		939	Functions and methods that extend core crossfire objects.
		940
		941	=cut
		942
		943	package cf::player;
		944
		945	use Coro::AIO;
		946
		947	=head3 cf::player
		948
		949	=over 4
		950
		951	=item cf::player::find $login
		952
		953	Returns the given player object, loading it if necessary (might block).
		954
		955	=cut
		956
		957	sub playerdir($) {
		958	cf::localdir
		959	. "/"
		960	. cf::playerdir
		961	. "/"
		962	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		963	}
		964
		965	sub path($) {
		966	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		967
		968	(playerdir $login) . "/$login.pl"
		969	}
		970
		971	sub find_active($) {
		972	$cf::PLAYER{$_[0]}
		973	and $cf::PLAYER{$_[0]}->active
		974	and $cf::PLAYER{$_[0]}
		975	}
		976
		977	sub exists($) {
		978	my ($login) = @_;
		979
		980	$cf::PLAYER{$login}
		981	or cf::sync_job { !aio_stat path $login }
		982	}
		983
		984	sub find($) {
		985	return $cf::PLAYER{$_[0]} || do {
		986	my $login = $_[0];
		987
		988	my $guard = cf::lock_acquire "user_find:$login";
		989
		990	$cf::PLAYER{$_[0]} || do {
		991	my $pl = load_pl path $login
		992	or return;
		993	$cf::PLAYER{$login} = $pl
		994	}
		995	}
		996	}
		997
		998	sub save($) {
		999	my ($pl) = @_;
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	my $path = path $pl;
		1004	my $guard = cf::lock_acquire "user_save:$path";
		1005
		1006	return if $pl->{deny_save};
		1007
		1008	aio_mkdir playerdir $pl, 0770;
		1009	$pl->{last_save} = $cf::RUNTIME;
		1010
		1011	$pl->save_pl ($path);
		1012	Coro::cede;
		1013	}
		1014
		1015	sub new($) {
		1016	my ($login) = @_;
		1017
		1018	my $self = create;
		1019
		1020	$self->ob->name ($login);
		1021	$self->{deny_save} = 1;
		1022
		1023	$cf::PLAYER{$login} = $self;
		1024
		1025	$self
		1026	}
		1027
		1028	=item $pl->quit_character
		1029
		1030	Nukes the player without looking back. If logged in, the connection will
		1031	be destroyed. May block for a long time.
		1032
		1033	=cut
		1034
		1035	sub quit_character {
		1036	my ($pl) = @_;
		1037
		1038	my $name = $pl->ob->name;
		1039
		1040	$pl->{deny_save} = 1;
		1041	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1042
		1043	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1044	$pl->deactivate;
		1045	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1046	$pl->ns->destroy if $pl->ns;
		1047
		1048	my $path = playerdir $pl;
		1049	my $temp = "$path~$cf::RUNTIME~deleting~";
		1050	aio_rename $path, $temp;
		1051	delete $cf::PLAYER{$pl->ob->name};
		1052	$pl->destroy;
		1053
		1054	my $prefix = qr<^~\Q$name\E/>;
		1055
		1056	# nuke player maps
		1057	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1058
		1059	IO::AIO::aio_rmtree $temp;
		1060	}
		1061
		1062	=item $pl->kick
		1063
		1064	Kicks a player out of the game. This destroys the connection.
		1065
		1066	=cut
		1067
		1068	sub kick {
		1069	my ($pl, $kicker) = @_;
		1070
		1071	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1072	$pl->killer ("kicked");
		1073	$pl->ns->destroy;
		1074	}
		1075
		1076	=item cf::player::list_logins
		1077
		1078	Returns am arrayref of all valid playernames in the system, can take a
		1079	while and may block, so not sync_job-capable, ever.
		1080
		1081	=cut
		1082
		1083	sub list_logins {
		1084	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1085	or return [];
		1086
		1087	my @logins;
		1088
		1089	for my $login (@$dirs) {
		1090	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1091	aio_read $fh, 0, 512, my $buf, 0 or next;
		1092	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1093
		1094	utf8::decode $login;
		1095	push @logins, $login;
		1096	}
		1097
		1098	\@logins
		1099	}
		1100
		1101	=item $player->maps
		1102
		1103	Returns an arrayref of map paths that are private for this
		1104	player. May block.
		1105
		1106	=cut
		1107
		1108	sub maps($) {
		1109	my ($pl) = @_;
		1110
		1111	$pl = ref $pl ? $pl->ob->name : $pl;
		1112
		1113	my $files = aio_readdir playerdir $pl
		1114	or return;
		1115
		1116	my @paths;
		1117
		1118	for (@$files) {
		1119	utf8::decode $_;
		1120	next if /\.(?:pl|pst)$/;
		1121	next unless /^$PATH_SEP/o;
		1122
		1123	push @paths, cf::map::normalise "~$pl/$_";
		1124	}
		1125
		1126	\@paths
		1127	}
		1128
		1129	=item $player->ext_reply ($msgid, %msg)
		1130
		1131	Sends an ext reply to the player.
		1132
		1133	=cut
		1134
		1135	sub ext_reply($$%) {
		1136	my ($self, $id, %msg) = @_;
		1137
		1138	$msg{msgid} = $id;
		1139
		1140	$self->send ("ext " . cf::to_json \%msg);
		1141	}
		1142
		1143	=item $player->ext_event ($type, %msg)
		1144
		1145	Sends an ext event to the client.
		1146
		1147	=cut
		1148
		1149	sub ext_event($$%) {
		1150	my ($self, $type, %msg) = @_;
		1151
		1152	$self->ns->ext_event ($type, %msg);
		1153	}
		1154
		1155	package cf;
		1156
		1157	=back
		1158
		1159
		1160	=head3 cf::map
		1161
		1162	=over 4
		1163
		1164	=cut
		1165
		1166	package cf::map;
		1167
		1168	use Fcntl;
		1169	use Coro::AIO;
		1170
		1171	use overload
		1172	'""' => \&as_string,
		1173	fallback => 1;
		1174
		1175	our $MAX_RESET = 3600;
		1176	our $DEFAULT_RESET = 3000;
		1177
		1178	sub generate_random_map {
		1179	my ($self, $rmp) = @_;
		1180	# mit "rum" bekleckern, nicht
		1181	$self->_create_random_map (
		1182	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1183	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1184	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1185	$rmp->{exit_on_final_map},
		1186	$rmp->{xsize}, $rmp->{ysize},
		1187	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1188	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1189	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1190	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1191	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1192	(cf::region::find $rmp->{region}), $rmp->{custom}
		1193	)
		1194	}
		1195
		1196	=item cf::map->register ($regex, $prio)
		1197
		1198	Register a handler for the map path matching the given regex at the
		1199	givne priority (higher is better, built-in handlers have priority 0, the
		1200	default).
		1201
		1202	=cut
		1203
		1204	sub register {
		1205	my (undef, $regex, $prio) = @_;
		1206	my $pkg = caller;
		1207
		1208	no strict;
		1209	push @{"$pkg\::ISA"}, __PACKAGE__;
		1210
		1211	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1212	}
		1213
		1214	# also paths starting with '/'
		1215	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1216
		1217	sub thawer_merge {
		1218	my ($self, $merge) = @_;
		1219
		1220	# we have to keep some variables in memory intact
		1221	local $self->{path};
		1222	local $self->{load_path};
		1223	local $self->{deny_save};
		1224	local $self->{deny_reset};
		1225
		1226	$self->SUPER::thawer_merge ($merge);
		1227	}
		1228
		1229	sub normalise {
233	my ($who, $arg) = @_;	1230	my ($path, $base) = @_;
234		1231
235	if ($who->flag (FLAG_WIZ)) {	1232	$path = "$path"; # make sure its a string
236	$who->message ("reloading...");
237		1233
238	warn "reloading...\n";	1234	$path =~ s/\.map$//;
239	eval {
240	# 1. cancel all watchers
241	$_->cancel for Event::all_watchers;
242		1235
243	# 2. unload all extensions	1236	# map plan:
		1237	#
		1238	# /! non-realised random map exit (special hack!)
		1239	# {... are special paths that are not being touched
		1240	# ?xxx/... are special absolute paths
		1241	# ?random/... random maps
		1242	# /... normal maps
		1243	# ~user/... per-player map of a specific user
		1244
		1245	$path =~ s/$PATH_SEP/\//go;
		1246
		1247	# treat it as relative path if it starts with
		1248	# something that looks reasonable
		1249	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1250	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1251
		1252	$base =~ s{[^/]+/?$}{};
		1253	$path = "$base/$path";
		1254	}
		1255
		1256	for ($path) {
		1257	redo if s{//}{/};
		1258	redo if s{/\.?/}{/};
		1259	redo if s{/[^/]+/\.\./}{/};
		1260	}
		1261
		1262	$path
		1263	}
		1264
		1265	sub new_from_path {
		1266	my (undef, $path, $base) = @_;
		1267
		1268	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1269
		1270	$path = normalise $path, $base;
		1271
		1272	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1273	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1274	my $self = bless cf::map::new, $pkg;
		1275	$self->{path} = $path; $self->path ($path);
		1276	$self->init; # pass $1 etc.
		1277	return $self;
		1278	}
		1279	}
		1280
		1281	Carp::carp "unable to resolve path '$path' (base '$base').";
		1282	()
		1283	}
		1284
		1285	sub init {
		1286	my ($self) = @_;
		1287
		1288	$self
		1289	}
		1290
		1291	sub as_string {
		1292	my ($self) = @_;
		1293
		1294	"$self->{path}"
		1295	}
		1296
		1297	# the displayed name, this is a one way mapping
		1298	sub visible_name {
		1299	&as_string
		1300	}
		1301
		1302	# the original (read-only) location
		1303	sub load_path {
		1304	my ($self) = @_;
		1305
		1306	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1307	}
		1308
		1309	# the temporary/swap location
		1310	sub save_path {
		1311	my ($self) = @_;
		1312
		1313	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1314	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1315	}
		1316
		1317	# the unique path, undef == no special unique path
		1318	sub uniq_path {
		1319	my ($self) = @_;
		1320
		1321	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1322	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1323	}
		1324
		1325	# and all this just because we cannot iterate over
		1326	# all maps in C++...
		1327	sub change_all_map_light {
		1328	my ($change) = @_;
		1329
		1330	$_->change_map_light ($change)
		1331	for grep $_->outdoor, values %cf::MAP;
		1332	}
		1333
		1334	sub unlink_save {
		1335	my ($self) = @_;
		1336
		1337	utf8::encode (my $save = $self->save_path);
		1338	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1339	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1340	}
		1341
		1342	sub load_header_from($) {
		1343	my ($self, $path) = @_;
		1344
		1345	utf8::encode $path;
		1346	#aio_open $path, O_RDONLY, 0
		1347	# or return;
		1348
		1349	$self->_load_header ($path)
		1350	or return;
		1351
		1352	$self->{load_path} = $path;
		1353
		1354	1
		1355	}
		1356
		1357	sub load_header_orig {
		1358	my ($self) = @_;
		1359
		1360	$self->load_header_from ($self->load_path)
		1361	}
		1362
		1363	sub load_header_temp {
		1364	my ($self) = @_;
		1365
		1366	$self->load_header_from ($self->save_path)
		1367	}
		1368
		1369	sub prepare_temp {
		1370	my ($self) = @_;
		1371
		1372	$self->last_access ((delete $self->{last_access})
		1373	|| $cf::RUNTIME); #d#
		1374	# safety
		1375	$self->{instantiate_time} = $cf::RUNTIME
		1376	if $self->{instantiate_time} > $cf::RUNTIME;
		1377	}
		1378
		1379	sub prepare_orig {
		1380	my ($self) = @_;
		1381
		1382	$self->{load_original} = 1;
		1383	$self->{instantiate_time} = $cf::RUNTIME;
		1384	$self->last_access ($cf::RUNTIME);
		1385	$self->instantiate;
		1386	}
		1387
		1388	sub load_header {
		1389	my ($self) = @_;
		1390
		1391	if ($self->load_header_temp) {
		1392	$self->prepare_temp;
		1393	} else {
		1394	$self->load_header_orig
		1395	or return;
		1396	$self->prepare_orig;
		1397	}
		1398
		1399	1
		1400	}
		1401
		1402	sub find;
		1403	sub find {
		1404	my ($path, $origin) = @_;
		1405
		1406	$path = normalise $path, $origin && $origin->path;
		1407
		1408	cf::lock_wait "map_find:$path";
		1409
		1410	$cf::MAP{$path} || do {
		1411	my $guard = cf::lock_acquire "map_find:$path";
		1412	my $map = new_from_path cf::map $path
		1413	or return;
		1414
		1415	$map->{last_save} = $cf::RUNTIME;
		1416
		1417	$map->load_header
		1418	or return;
		1419
		1420	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1421	# doing this can freeze the server in a sync job, obviously
		1422	#$cf::WAIT_FOR_TICK->wait;
		1423	$map->reset;
		1424	undef $guard;
		1425	return find $path;
		1426	}
		1427
		1428	$cf::MAP{$path} = $map
		1429	}
		1430	}
		1431
		1432	sub pre_load { }
		1433	sub post_load { }
		1434
		1435	sub load {
		1436	my ($self) = @_;
		1437
		1438	local $self->{deny_reset} = 1; # loading can take a long time
		1439
		1440	my $path = $self->{path};
		1441	my $guard = cf::lock_acquire "map_load:$path";
		1442
		1443	return if $self->in_memory != cf::MAP_SWAPPED;
		1444
		1445	$self->in_memory (cf::MAP_LOADING);
		1446
		1447	$self->alloc;
		1448
		1449	$self->pre_load;
		1450
		1451	$self->_load_objects ($self->{load_path}, 1)
		1452	or return;
		1453
		1454	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1455	if delete $self->{load_original};
		1456
		1457	if (my $uniq = $self->uniq_path) {
		1458	utf8::encode $uniq;
		1459	if (aio_open $uniq, O_RDONLY, 0) {
		1460	$self->clear_unique_items;
		1461	$self->_load_objects ($uniq, 0);
		1462	}
		1463	}
		1464
		1465	Coro::cede;
		1466
		1467	# now do the right thing for maps
		1468	$self->link_multipart_objects;
		1469
		1470	unless ($self->{deny_activate}) {
		1471	$self->decay_objects;
		1472	$self->fix_auto_apply;
		1473	$self->update_buttons;
		1474	Coro::cede;
		1475	$self->set_darkness_map;
		1476	$self->difficulty ($self->estimate_difficulty)
		1477	unless $self->difficulty;
		1478	Coro::cede;
		1479	$self->activate;
		1480	}
		1481
		1482	$self->post_load;
		1483
		1484	$self->in_memory (cf::MAP_IN_MEMORY);
		1485	}
		1486
		1487	sub customise_for {
		1488	my ($self, $ob) = @_;
		1489
		1490	return find "~" . $ob->name . "/" . $self->{path}
		1491	if $self->per_player;
		1492
		1493	$self
		1494	}
		1495
		1496	# find and load all maps in the 3x3 area around a map
		1497	sub load_diag {
		1498	my ($map) = @_;
		1499
		1500	my @diag; # diagonal neighbours
		1501
		1502	for (0 .. 3) {
		1503	my $neigh = $map->tile_path ($_)
244	for (@exts) {	1504	or next;
245	$who->message ("unloading <$_>");	1505	$neigh = find $neigh, $map
246	unload_extension $_;	1506	or next;
		1507	$neigh->load;
		1508
		1509	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1510	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1511	}
		1512
		1513	for (@diag) {
		1514	my $neigh = find @$_
		1515	or next;
		1516	$neigh->load;
		1517	}
		1518	}
		1519
		1520	sub find_sync {
		1521	my ($path, $origin) = @_;
		1522
		1523	cf::sync_job { find $path, $origin }
		1524	}
		1525
		1526	sub do_load_sync {
		1527	my ($map) = @_;
		1528
		1529	cf::sync_job { $map->load };
		1530	}
		1531
		1532	our %MAP_PREFETCH;
		1533	our $MAP_PREFETCHER = undef;
		1534
		1535	sub find_async {
		1536	my ($path, $origin) = @_;
		1537
		1538	$path = normalise $path, $origin && $origin->{path};
		1539
		1540	if (my $map = $cf::MAP{$path}) {
		1541	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1542	}
		1543
		1544	undef $MAP_PREFETCH{$path};
		1545	$MAP_PREFETCHER ||= cf::async {
		1546	while (%MAP_PREFETCH) {
		1547	for my $path (keys %MAP_PREFETCH) {
		1548	my $map = find $path
		1549	or next;
		1550	$map->load;
		1551
		1552	delete $MAP_PREFETCH{$path};
247	}	1553	}
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	};	1554	}
283	warn $@ if $@;	1555	undef $MAP_PREFETCHER;
284	$who->message ($@) if $@;	1556	};
285	warn "reloaded\n";	1557	$MAP_PREFETCHER->prio (6);
286		1558
287	$who->message ("reloaded");	1559	()
		1560	}
		1561
		1562	sub save {
		1563	my ($self) = @_;
		1564
		1565	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1566
		1567	$self->{last_save} = $cf::RUNTIME;
		1568
		1569	return unless $self->dirty;
		1570
		1571	my $save = $self->save_path; utf8::encode $save;
		1572	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1573
		1574	$self->{load_path} = $save;
		1575
		1576	return if $self->{deny_save};
		1577
		1578	local $self->{last_access} = $self->last_access;#d#
		1579
		1580	cf::async {
		1581	$_->contr->save for $self->players;
		1582	};
		1583
		1584	if ($uniq) {
		1585	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1586	$self->_save_objects ($uniq, cf::IO_UNIQUES);
288	} else {	1587	} else {
289	$who->message ("Intruder Alert!");	1588	$self->_save_objects ($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	1589	}
328	}	1590	}
329		1591
330	#############################################################################	1592	sub swap_out {
331	# load/save/clean perl data associated with a map
332
333	*on_mapclean = sub {
334	my ($map) = @_;	1593	my ($self) = @_;
335		1594
336	my $path = $map->tmpname;	1595	# save first because save cedes
337	defined $path or return;	1596	$self->save;
338		1597
339	unlink "$path.cfperl";	1598	my $lock = cf::lock_acquire "map_data:" . $self->path;
340	};
341		1599
342	*on_mapin =	1600	return if $self->players;
343	*on_mapload = sub {	1601	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1602	return if $self->{deny_save};
		1603
		1604	$self->clear;
		1605	$self->in_memory (cf::MAP_SWAPPED);
		1606	}
		1607
		1608	sub reset_at {
344	my ($map) = @_;	1609	my ($self) = @_;
345		1610
346	my $path = $map->tmpname;	1611	# TODO: safety, remove and allow resettable per-player maps
347	$path = $map->path unless defined $path;	1612	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1613	return 1e99 if $self->{deny_reset};
348		1614
349	open my $fh, "<:raw", "$path.cfperl"	1615	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
350	or return; # no perl data	1616	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
351		1617
352	my $data = Storable::thaw do { local $/; <$fh> };	1618	$time + $to
		1619	}
353		1620
354	$data->{version} <= 1	1621	sub should_reset {
355	or return; # too new
356
357	$map->_set_obs ($data->{obs});
358	};
359
360	*on_mapout = sub {
361	my ($map) = @_;	1622	my ($self) = @_;
362		1623
363	my $path = $map->tmpname;	1624	$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	}	1625	}
393		1626
394	*on_player_load = sub {	1627	sub reset {
395	my ($ob, $path) = @_;	1628	my ($self) = @_;
396		1629
397	for my $o (all_objects $ob) {	1630	my $lock = cf::lock_acquire "map_data:$self->{path}";
398	if (my $value = $o->get_ob_key_value ("_perl_data")) {
399	$o->set_ob_key_value ("_perl_data");
400		1631
401	%$o = %{ Storable::thaw pack "H*", $value };	1632	return if $self->players;
402	}	1633	return if $self->isa ("ext::map_per_player");#d#
403	}
404	};
405		1634
406	*on_player_save = sub {	1635	warn "resetting map ", $self->path;#d#
407	my ($ob, $path) = @_;
408		1636
409	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)	1637	$self->in_memory (cf::MAP_SWAPPED);
410	for grep %$_, all_objects $ob;
411	};
412		1638
413	#############################################################################	1639	# need to save uniques path
414	# core extensions - in perl	1640	unless ($self->{deny_save}) {
		1641	my $uniq = $self->uniq_path; utf8::encode $uniq;
415		1642
416	my $delta_timer = Event->timer (	1643	$self->_save_objects ($uniq, cf::IO_UNIQUES)
417	parked => 1,	1644	if $uniq;
418	prio => Event::PRIO_HIGH,	1645	}
419	cb => sub { Event::unloop (undef) },
420	);
421		1646
422	sub sleep_delta($) {	1647	delete $cf::MAP{$self->path};
423	$delta_timer->at (Event::time + $_[0]);
424	$delta_timer->start;
425	Event::loop;
426	}
427		1648
428	=item cf::player::exists $login	1649	$self->clear;
429		1650
430	Returns true when the given account exists.	1651	$_->clear_links_to ($self) for values %cf::MAP;
431		1652
432	=cut	1653	$self->unlink_save;
433		1654	$self->destroy;
434	sub cf::player::exists($) {
435	cf::player::find $_[0]
436	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
437	}	1655	}
438		1656
		1657	my $nuke_counter = "aaaa";
		1658
		1659	sub nuke {
		1660	my ($self) = @_;
		1661
		1662	delete $cf::MAP{$self->path};
		1663
		1664	$self->unlink_save;
		1665
		1666	bless $self, "cf::map";
		1667	delete $self->{deny_reset};
		1668	$self->{deny_save} = 1;
		1669	$self->reset_timeout (1);
		1670	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1671
		1672	$cf::MAP{$self->path} = $self;
		1673
		1674	$self->reset; # polite request, might not happen
		1675	}
		1676
		1677	=item cf::map::unique_maps
		1678
		1679	Returns an arrayref of paths of all shared maps that have
		1680	instantiated unique items. May block.
		1681
		1682	=cut
		1683
		1684	sub unique_maps() {
		1685	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1686	or return;
		1687
		1688	my @paths;
		1689
		1690	for (@$files) {
		1691	utf8::decode $_;
		1692	next if /\.pst$/;
		1693	next unless /^$PATH_SEP/o;
		1694
		1695	push @paths, cf::map::normalise $_;
		1696	}
		1697
		1698	\@paths
		1699	}
		1700
		1701	package cf;
		1702
		1703	=back
		1704
		1705	=head3 cf::object
		1706
		1707	=cut
		1708
		1709	package cf::object;
		1710
		1711	=over 4
		1712
		1713	=item $ob->inv_recursive
		1714
		1715	Returns the inventory of the object _and_ their inventories, recursively.
		1716
		1717	=cut
		1718
		1719	sub inv_recursive_;
		1720	sub inv_recursive_ {
		1721	map { $_, inv_recursive_ $_->inv } @_
		1722	}
		1723
		1724	sub inv_recursive {
		1725	inv_recursive_ inv $_[0]
		1726	}
		1727
		1728	package cf;
		1729
		1730	=back
		1731
		1732	=head3 cf::object::player
		1733
		1734	=over 4
		1735
439	=item $player->reply ($npc, $msg[, $flags])	1736	=item $player_object->reply ($npc, $msg[, $flags])
440		1737
441	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1738	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
442	can be C<undef>. Does the right thing when the player is currently in a	1739	can be C<undef>. Does the right thing when the player is currently in a
443	dialogue with the given NPC character.	1740	dialogue with the given NPC character.
444		1741
445	=cut	1742	=cut
446		1743
447	# rough implementation of a future "reply" method that works	1744	# rough implementation of a future "reply" method that works
448	# with dialog boxes.	1745	# with dialog boxes.
		1746	#TODO: the first argument must go, split into a $npc->reply_to ( method
449	sub cf::object::player::reply($$$;$) {	1747	sub cf::object::player::reply($$$;$) {
450	my ($self, $npc, $msg, $flags) = @_;	1748	my ($self, $npc, $msg, $flags) = @_;
451		1749
452	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1750	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
453		1751
…		…
457	$msg = $npc->name . " says: $msg" if $npc;	1755	$msg = $npc->name . " says: $msg" if $npc;
458	$self->message ($msg, $flags);	1756	$self->message ($msg, $flags);
459	}	1757	}
460	}	1758	}
461		1759
462	=item $player->ext_reply ($msgid, $msgtype, %msg)	1760	=item $player_object->may ("access")
463		1761
464	Sends an ext reply to the player.	1762	Returns wether the given player is authorized to access resource "access"
		1763	(e.g. "command_wizcast").
465		1764
466	=cut	1765	=cut
467		1766
468	sub cf::player::ext_reply($$$%) {	1767	sub cf::object::player::may {
		1768	my ($self, $access) = @_;
		1769
		1770	$self->flag (cf::FLAG_WIZ) ||
		1771	(ref $cf::CFG{"may_$access"}
		1772	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1773	: $cf::CFG{"may_$access"})
		1774	}
		1775
		1776	=item $player_object->enter_link
		1777
		1778	Freezes the player and moves him/her to a special map (C<{link}>).
		1779
		1780	The player should be reasonably safe there for short amounts of time. You
		1781	I<MUST> call C<leave_link> as soon as possible, though.
		1782
		1783	Will never block.
		1784
		1785	=item $player_object->leave_link ($map, $x, $y)
		1786
		1787	Moves the player out of the special C<{link}> map onto the specified
		1788	map. If the map is not valid (or omitted), the player will be moved back
		1789	to the location he/she was before the call to C<enter_link>, or, if that
		1790	fails, to the emergency map position.
		1791
		1792	Might block.
		1793
		1794	=cut
		1795
		1796	sub link_map {
		1797	unless ($LINK_MAP) {
		1798	$LINK_MAP = cf::map::find "{link}"
		1799	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1800	$LINK_MAP->load;
		1801	}
		1802
		1803	$LINK_MAP
		1804	}
		1805
		1806	sub cf::object::player::enter_link {
		1807	my ($self) = @_;
		1808
		1809	$self->deactivate_recursive;
		1810
		1811	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1812
		1813	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1814	if $self->map;
		1815
		1816	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1817	}
		1818
		1819	sub cf::object::player::leave_link {
		1820	my ($self, $map, $x, $y) = @_;
		1821
		1822	my $link_pos = delete $self->{_link_pos};
		1823
		1824	unless ($map) {
		1825	# restore original map position
		1826	($map, $x, $y) = @{ $link_pos || [] };
		1827	$map = cf::map::find $map;
		1828
		1829	unless ($map) {
		1830	($map, $x, $y) = @$EMERGENCY_POSITION;
		1831	$map = cf::map::find $map
		1832	or die "FATAL: cannot load emergency map\n";
		1833	}
		1834	}
		1835
		1836	($x, $y) = (-1, -1)
		1837	unless (defined $x) && (defined $y);
		1838
		1839	# use -1 or undef as default coordinates, not 0, 0
		1840	($x, $y) = ($map->enter_x, $map->enter_y)
		1841	if $x <=0 && $y <= 0;
		1842
		1843	$map->load;
		1844	$map->load_diag;
		1845
		1846	return unless $self->contr->active;
		1847	$self->activate_recursive;
		1848
		1849	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1850	$self->enter_map ($map, $x, $y);
		1851	}
		1852
		1853	cf::player->attach (
		1854	on_logout => sub {
		1855	my ($pl) = @_;
		1856
		1857	# abort map switching before logout
		1858	if ($pl->ob->{_link_pos}) {
		1859	cf::sync_job {
		1860	$pl->ob->leave_link
		1861	};
		1862	}
		1863	},
		1864	on_login => sub {
		1865	my ($pl) = @_;
		1866
		1867	# try to abort aborted map switching on player login :)
		1868	# should happen only on crashes
		1869	if ($pl->ob->{_link_pos}) {
		1870	$pl->ob->enter_link;
		1871	(async {
		1872	$pl->ob->reply (undef,
		1873	"There was an internal problem at your last logout, "
		1874	. "the server will try to bring you to your intended destination in a second.",
		1875	cf::NDI_RED);
		1876	# we need this sleep as the login has a concurrent enter_exit running
		1877	# and this sleep increases chances of the player not ending up in scorn
		1878	Coro::Timer::sleep 1;
		1879	$pl->ob->leave_link;
		1880	})->prio (2);
		1881	}
		1882	},
		1883	);
		1884
		1885	=item $player_object->goto ($path, $x, $y)
		1886
		1887	=cut
		1888
		1889	sub cf::object::player::goto {
		1890	my ($self, $path, $x, $y) = @_;
		1891
		1892	$self->enter_link;
		1893
		1894	(async {
		1895	my $map = eval {
		1896	my $map = cf::map::find $path;
		1897	$map = $map->customise_for ($self) if $map;
		1898	$map
		1899	} or
		1900	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1901
		1902	$self->leave_link ($map, $x, $y);
		1903	})->prio (1);
		1904	}
		1905
		1906	=item $player_object->enter_exit ($exit_object)
		1907
		1908	=cut
		1909
		1910	sub parse_random_map_params {
		1911	my ($spec) = @_;
		1912
		1913	my $rmp = { # defaults
		1914	xsize => (cf::rndm 15, 40),
		1915	ysize => (cf::rndm 15, 40),
		1916	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1917	#layout => string,
		1918	};
		1919
		1920	for (split /\n/, $spec) {
		1921	my ($k, $v) = split /\s+/, $_, 2;
		1922
		1923	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1924	}
		1925
		1926	$rmp
		1927	}
		1928
		1929	sub prepare_random_map {
		1930	my ($exit) = @_;
		1931
		1932	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1933
		1934	# all this does is basically replace the /! path by
		1935	# a new random map path (?random/...) with a seed
		1936	# that depends on the exit object
		1937
		1938	my $rmp = parse_random_map_params $exit->msg;
		1939
		1940	if ($exit->map) {
		1941	$rmp->{region} = $exit->region->name;
		1942	$rmp->{origin_map} = $exit->map->path;
		1943	$rmp->{origin_x} = $exit->x;
		1944	$rmp->{origin_y} = $exit->y;
		1945	}
		1946
		1947	$rmp->{random_seed} ||= $exit->random_seed;
		1948
		1949	my $data = cf::to_json $rmp;
		1950	my $md5 = Digest::MD5::md5_hex $data;
		1951	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1952
		1953	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1954	aio_write $fh, 0, (length $data), $data, 0;
		1955	undef $fh;
		1956	aio_rename "$meta~", $meta;
		1957
		1958	$exit->slaying ("?random/$md5");
		1959	$exit->msg (undef);
		1960	}
		1961	}
		1962
		1963	sub cf::object::player::enter_exit {
		1964	my ($self, $exit) = @_;
		1965
		1966	return unless $self->type == cf::PLAYER;
		1967
		1968	if ($exit->slaying eq "/!") {
		1969	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1970	# the problem is that $exit might not survive long enough
		1971	# so it needs to be done right now, right here
		1972	cf::sync_job { prepare_random_map $exit };
		1973	}
		1974
		1975	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1976	my $hp = $exit->stats->hp;
		1977	my $sp = $exit->stats->sp;
		1978
		1979	$self->enter_link;
		1980
		1981	(async {
		1982	$self->deactivate_recursive; # just to be sure
		1983	unless (eval {
		1984	$self->goto ($slaying, $hp, $sp);
		1985
		1986	1;
		1987	}) {
		1988	$self->message ("Something went wrong deep within the crossfire server. "
		1989	. "I'll try to bring you back to the map you were before. "
		1990	. "Please report this to the dungeon master!",
		1991	cf::NDI_UNIQUE | cf::NDI_RED);
		1992
		1993	warn "ERROR in enter_exit: $@";
		1994	$self->leave_link;
		1995	}
		1996	})->prio (1);
		1997	}
		1998
		1999	=head3 cf::client
		2000
		2001	=over 4
		2002
		2003	=item $client->send_drawinfo ($text, $flags)
		2004
		2005	Sends a drawinfo packet to the client. Circumvents output buffering so
		2006	should not be used under normal circumstances.
		2007
		2008	=cut
		2009
		2010	sub cf::client::send_drawinfo {
		2011	my ($self, $text, $flags) = @_;
		2012
		2013	utf8::encode $text;
		2014	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2015	}
		2016
		2017	=item $client->ext_event ($type, %msg)
		2018
		2019	Sends an exti event to the client.
		2020
		2021	=cut
		2022
		2023	sub cf::client::ext_event($$%) {
469	my ($self, $id, %msg) = @_;	2024	my ($self, $type, %msg) = @_;
470		2025
471	$msg{msgid} = $id;	2026	$msg{msgtype} = "event_$type";
472
473	$self->send ("ext " . to_json \%msg);	2027	$self->send_packet ("ext " . cf::to_json \%msg);
474	}	2028	}
475		2029
476	#############################################################################	2030	=item $success = $client->query ($flags, "text", \&cb)
477	# map scripting support
478		2031
		2032	Queues a query to the client, calling the given callback with
		2033	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2034	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2035
		2036	Queries can fail, so check the return code. Or don't, as queries will become
		2037	reliable at some point in the future.
		2038
		2039	=cut
		2040
		2041	sub cf::client::query {
		2042	my ($self, $flags, $text, $cb) = @_;
		2043
		2044	return unless $self->state == ST_PLAYING
		2045	|| $self->state == ST_SETUP
		2046	|| $self->state == ST_CUSTOM;
		2047
		2048	$self->state (ST_CUSTOM);
		2049
		2050	utf8::encode $text;
		2051	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2052
		2053	$self->send_packet ($self->{query_queue}[0][0])
		2054	if @{ $self->{query_queue} } == 1;
		2055	}
		2056
		2057	cf::client->attach (
		2058	on_reply => sub {
		2059	my ($ns, $msg) = @_;
		2060
		2061	# this weird shuffling is so that direct followup queries
		2062	# get handled first
		2063	my $queue = delete $ns->{query_queue}
		2064	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2065
		2066	(shift @$queue)->[1]->($msg);
		2067	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2068
		2069	push @{ $ns->{query_queue} }, @$queue;
		2070
		2071	if (@{ $ns->{query_queue} } == @$queue) {
		2072	if (@$queue) {
		2073	$ns->send_packet ($ns->{query_queue}[0][0]);
		2074	} else {
		2075	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2076	}
		2077	}
		2078	},
		2079	);
		2080
		2081	=item $client->async (\&cb)
		2082
		2083	Create a new coroutine, running the specified callback. The coroutine will
		2084	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2085	or loss of connection).
		2086
		2087	=cut
		2088
		2089	sub cf::client::async {
		2090	my ($self, $cb) = @_;
		2091
		2092	my $coro = &Coro::async ($cb);
		2093
		2094	$coro->on_destroy (sub {
		2095	delete $self->{_coro}{$coro+0};
		2096	});
		2097
		2098	$self->{_coro}{$coro+0} = $coro;
		2099
		2100	$coro
		2101	}
		2102
		2103	cf::client->attach (
		2104	on_destroy => sub {
		2105	my ($ns) = @_;
		2106
		2107	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2108	},
		2109	);
		2110
		2111	=back
		2112
		2113
		2114	=head2 SAFE SCRIPTING
		2115
		2116	Functions that provide a safe environment to compile and execute
		2117	snippets of perl code without them endangering the safety of the server
		2118	itself. Looping constructs, I/O operators and other built-in functionality
		2119	is not available in the safe scripting environment, and the number of
		2120	functions and methods that can be called is greatly reduced.
		2121
		2122	=cut
		2123
479	our $safe = new Safe "ext";	2124	our $safe = new Safe "safe";
480	our $safe_hole = new Safe::Hole;	2125	our $safe_hole = new Safe::Hole;
481		2126
482	$SIG{FPE} = 'IGNORE';	2127	$SIG{FPE} = 'IGNORE';
483		2128
484	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2129	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
485		2130
486	# here we export the classes and methods available to script code	2131	# here we export the classes and methods available to script code
487		2132
		2133	=pod
		2134
		2135	The following functions and methods are available within a safe environment:
		2136
		2137	cf::object contr pay_amount pay_player map
		2138	cf::object::player player
		2139	cf::player peaceful
		2140	cf::map trigger
		2141
		2142	=cut
		2143
488	for (	2144	for (
489	["cf::object" => qw(contr pay_amount pay_player)],	2145	["cf::object" => qw(contr pay_amount pay_player map)],
490	["cf::object::player" => qw(player)],	2146	["cf::object::player" => qw(player)],
491	["cf::player" => qw(peaceful)],	2147	["cf::player" => qw(peaceful)],
		2148	["cf::map" => qw(trigger)],
492	) {	2149	) {
493	no strict 'refs';	2150	no strict 'refs';
494	my ($pkg, @funs) = @$_;	2151	my ($pkg, @funs) = @$_;
495	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2152	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
496	for @funs;	2153	for @funs;
497	}	2154	}
		2155
		2156	=over 4
		2157
		2158	=item @retval = safe_eval $code, [var => value, ...]
		2159
		2160	Compiled and executes the given perl code snippet. additional var/value
		2161	pairs result in temporary local (my) scalar variables of the given name
		2162	that are available in the code snippet. Example:
		2163
		2164	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2165
		2166	=cut
498		2167
499	sub safe_eval($;@) {	2168	sub safe_eval($;@) {
500	my ($code, %vars) = @_;	2169	my ($code, %vars) = @_;
501		2170
502	my $qcode = $code;	2171	my $qcode = $code;
503	$qcode =~ s/"/‟/g; # not allowed in #line filenames	2172	$qcode =~ s/"/‟/g; # not allowed in #line filenames
504	$qcode =~ s/\n/\\n/g;	2173	$qcode =~ s/\n/\\n/g;
505		2174
506	local $_;	2175	local $_;
507	local @ext::cf::_safe_eval_args = values %vars;	2176	local @safe::cf::_safe_eval_args = values %vars;
508		2177
509	$code =	2178	my $eval =
510	"do {\n"	2179	"do {\n"
511	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	2180	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
512	. "#line 0 \"{$qcode}\"\n"	2181	. "#line 0 \"{$qcode}\"\n"
513	. $code	2182	. $code
514	. "\n}"	2183	. "\n}"
515	;	2184	;
516		2185
517	sub_generation_inc;	2186	sub_generation_inc;
518	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	2187	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
519	sub_generation_inc;	2188	sub_generation_inc;
520		2189
		2190	if ($@) {
		2191	warn "$@";
		2192	warn "while executing safe code '$code'\n";
		2193	warn "with arguments " . (join " ", %vars) . "\n";
		2194	}
		2195
521	wantarray ? @res : $res[0]	2196	wantarray ? @res : $res[0]
522	}	2197	}
		2198
		2199	=item cf::register_script_function $function => $cb
		2200
		2201	Register a function that can be called from within map/npc scripts. The
		2202	function should be reasonably secure and should be put into a package name
		2203	like the extension.
		2204
		2205	Example: register a function that gets called whenever a map script calls
		2206	C<rent::overview>, as used by the C<rent> extension.
		2207
		2208	cf::register_script_function "rent::overview" => sub {
		2209	...
		2210	};
		2211
		2212	=cut
523		2213
524	sub register_script_function {	2214	sub register_script_function {
525	my ($fun, $cb) = @_;	2215	my ($fun, $cb) = @_;
526		2216
527	no strict 'refs';	2217	no strict 'refs';
528	*{"ext::$fun"} = $safe_hole->wrap ($cb);	2218	*{"safe::$fun"} = $safe_hole->wrap ($cb);
529	}	2219	}
		2220
		2221	=back
		2222
		2223	=cut
530		2224
531	#############################################################################	2225	#############################################################################
532	# initialisation
533		2226
534	register "<global>", __PACKAGE__;	2227	=head2 EXTENSION DATABASE SUPPORT
		2228
		2229	Crossfire maintains a very simple database for extension use. It can
		2230	currently store anything that can be serialised using Storable, which
		2231	excludes objects.
		2232
		2233	The parameter C<$family> should best start with the name of the extension
		2234	using it, it should be unique.
		2235
		2236	=over 4
		2237
		2238	=item $value = cf::db_get $family => $key
		2239
		2240	Returns a single value from the database.
		2241
		2242	=item cf::db_put $family => $key => $value
		2243
		2244	Stores the given C<$value> in the family.
		2245
		2246	=cut
		2247
		2248	our $DB;
		2249
		2250	sub db_init {
		2251	unless ($DB) {
		2252	$DB = BDB::db_create $DB_ENV;
		2253
		2254	cf::sync_job {
		2255	eval {
		2256	$DB->set_flags (BDB::CHKSUM);
		2257
		2258	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2259	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2260	cf::cleanup "db_open(db): $!" if $!;
		2261	};
		2262	cf::cleanup "db_open(db): $@" if $@;
		2263	};
		2264
		2265	my $path = cf::localdir . "/database.pst";
		2266	if (stat $path) {
		2267	cf::sync_job {
		2268	my $pst = Storable::retrieve $path;
		2269
		2270	cf::db_put (board => data => $pst->{board});
		2271	cf::db_put (guildrules => data => $pst->{guildrules});
		2272	cf::db_put (rent => balance => $pst->{rent}{balance});
		2273	BDB::db_env_txn_checkpoint $DB_ENV;
		2274
		2275	unlink $path;
		2276	};
		2277	}
		2278	}
		2279	}
		2280
		2281	sub db_get($$) {
		2282	my $key = "$_[0]/$_[1]";
		2283
		2284	cf::sync_job {
		2285	BDB::db_get $DB, undef, $key, my $data;
		2286
		2287	$! ? ()
		2288	: Compress::LZF::sthaw $data
		2289	}
		2290	}
		2291
		2292	sub db_put($$$) {
		2293	BDB::dbreq_pri 4;
		2294	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2295	}
		2296
		2297	#############################################################################
		2298	# the server's init and main functions
		2299
		2300	sub load_facedata {
		2301	my $path = sprintf "%s/facedata", cf::datadir;
		2302
		2303	warn "loading facedata from $path\n";
		2304
		2305	my $faces;
		2306	0 < aio_load $path, $faces
		2307	or die "$path: $!";
		2308
		2309	Coro::cede;
		2310	$faces = Storable::thaw $faces;
		2311	Coro::cede;
		2312
		2313	my $meta = delete $faces->{""};
		2314	$meta->{version} == 1
		2315	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2316
		2317	while (my ($face, $info) = each %$faces) {
		2318	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2319	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2320	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2321	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2322	Coro::cede;
		2323	}
		2324
		2325	while (my ($face, $info) = each %$faces) {
		2326	next unless $info->{smooth};
		2327	my $idx = cf::face::find $face
		2328	or next;
		2329	if (my $smooth = cf::face::find $info->{smooth}) {
		2330	cf::face::set_smooth $idx, $smooth;
		2331	} else {
		2332	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2333	}
		2334	Coro::cede;
		2335	}
		2336
		2337	1
		2338	}
		2339
		2340	sub reload_resources {
		2341	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2342	or die "unable to load regions file\n";#d#
		2343	load_facedata
		2344	or die "unable to load facedata\n";#d#
		2345	}
		2346
		2347	sub init {
		2348	reload_resources;
		2349	}
		2350
		2351	sub cfg_load {
		2352	open my $fh, "<:utf8", cf::confdir . "/config"
		2353	or return;
		2354
		2355	local $/;
		2356	*CFG = YAML::Syck::Load <$fh>;
		2357
		2358	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2359
		2360	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2361	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2362
		2363	if (exists $CFG{mlockall}) {
		2364	eval {
		2365	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2366	and die "WARNING: m(un)lockall failed: $!\n";
		2367	};
		2368	warn $@ if $@;
		2369	}
		2370	}
		2371
		2372	sub main {
		2373	# we must not ever block the main coroutine
		2374	local $Coro::idle = sub {
		2375	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2376	(async {
		2377	Event::one_event;
		2378	})->prio (Coro::PRIO_MAX);
		2379	};
		2380
		2381	cfg_load;
		2382	db_init;
		2383	load_extensions;
		2384
		2385	$TICK_WATCHER->start;
		2386	Event::loop;
		2387	}
		2388
		2389	#############################################################################
		2390	# initialisation and cleanup
		2391
		2392	# install some emergency cleanup handlers
		2393	BEGIN {
		2394	for my $signal (qw(INT HUP TERM)) {
		2395	Event->signal (
		2396	reentrant => 0,
		2397	data => WF_AUTOCANCEL,
		2398	signal => $signal,
		2399	prio => 0,
		2400	cb => sub {
		2401	cf::cleanup "SIG$signal";
		2402	},
		2403	);
		2404	}
		2405	}
		2406
		2407	sub emergency_save() {
		2408	my $freeze_guard = cf::freeze_mainloop;
		2409
		2410	warn "enter emergency perl save\n";
		2411
		2412	cf::sync_job {
		2413	# use a peculiar iteration method to avoid tripping on perl
		2414	# refcount bugs in for. also avoids problems with players
		2415	# and maps saved/destroyed asynchronously.
		2416	warn "begin emergency player save\n";
		2417	for my $login (keys %cf::PLAYER) {
		2418	my $pl = $cf::PLAYER{$login} or next;
		2419	$pl->valid or next;
		2420	$pl->save;
		2421	}
		2422	warn "end emergency player save\n";
		2423
		2424	warn "begin emergency map save\n";
		2425	for my $path (keys %cf::MAP) {
		2426	my $map = $cf::MAP{$path} or next;
		2427	$map->valid or next;
		2428	$map->save;
		2429	}
		2430	warn "end emergency map save\n";
		2431
		2432	warn "begin emergency database checkpoint\n";
		2433	BDB::db_env_txn_checkpoint $DB_ENV;
		2434	warn "end emergency database checkpoint\n";
		2435	};
		2436
		2437	warn "leave emergency perl save\n";
		2438	}
		2439
		2440	sub post_cleanup {
		2441	my ($make_core) = @_;
		2442
		2443	warn Carp::longmess "post_cleanup backtrace"
		2444	if $make_core;
		2445	}
		2446
		2447	sub reload() {
		2448	# can/must only be called in main
		2449	if ($Coro::current != $Coro::main) {
		2450	warn "can only reload from main coroutine";
		2451	return;
		2452	}
		2453
		2454	warn "reloading...";
		2455
		2456	warn "entering sync_job";
		2457
		2458	cf::sync_job {
		2459	cf::write_runtime; # external watchdog should not bark
		2460	cf::emergency_save;
		2461	cf::write_runtime; # external watchdog should not bark
		2462
		2463	warn "syncing database to disk";
		2464	BDB::db_env_txn_checkpoint $DB_ENV;
		2465
		2466	# if anything goes wrong in here, we should simply crash as we already saved
		2467
		2468	warn "cancelling all WF_AUTOCANCEL watchers";
		2469	for (Event::all_watchers) {
		2470	$_->cancel if $_->data & WF_AUTOCANCEL;
		2471	}
		2472
		2473	warn "flushing outstanding aio requests";
		2474	for (;;) {
		2475	BDB::flush;
		2476	IO::AIO::flush;
		2477	Coro::cede;
		2478	last unless IO::AIO::nreqs || BDB::nreqs;
		2479	warn "iterate...";
		2480	}
		2481
		2482	++$RELOAD;
		2483
		2484	warn "cancelling all extension coros";
		2485	$_->cancel for values %EXT_CORO;
		2486	%EXT_CORO = ();
		2487
		2488	warn "removing commands";
		2489	%COMMAND = ();
		2490
		2491	warn "removing ext commands";
		2492	%EXTCMD = ();
		2493
		2494	warn "unloading/nuking all extensions";
		2495	for my $pkg (@EXTS) {
		2496	warn "... unloading $pkg";
		2497
		2498	if (my $cb = $pkg->can ("unload")) {
		2499	eval {
		2500	$cb->($pkg);
		2501	1
		2502	} or warn "$pkg unloaded, but with errors: $@";
		2503	}
		2504
		2505	warn "... nuking $pkg";
		2506	Symbol::delete_package $pkg;
		2507	}
		2508
		2509	warn "unloading all perl modules loaded from $LIBDIR";
		2510	while (my ($k, $v) = each %INC) {
		2511	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2512
		2513	warn "... unloading $k";
		2514	delete $INC{$k};
		2515
		2516	$k =~ s/\.pm$//;
		2517	$k =~ s/\//::/g;
		2518
		2519	if (my $cb = $k->can ("unload_module")) {
		2520	$cb->();
		2521	}
		2522
		2523	Symbol::delete_package $k;
		2524	}
		2525
		2526	warn "getting rid of safe::, as good as possible";
		2527	Symbol::delete_package "safe::$_"
		2528	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2529
		2530	warn "unloading cf.pm \"a bit\"";
		2531	delete $INC{"cf.pm"};
		2532
		2533	# don't, removes xs symbols, too,
		2534	# and global variables created in xs
		2535	#Symbol::delete_package __PACKAGE__;
		2536
		2537	warn "unload completed, starting to reload now";
		2538
		2539	warn "reloading cf.pm";
		2540	require cf;
		2541	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2542
		2543	warn "loading config and database again";
		2544	cf::cfg_load;
		2545
		2546	warn "loading extensions";
		2547	cf::load_extensions;
		2548
		2549	warn "reattaching attachments to objects/players";
		2550	_global_reattach; # objects, sockets
		2551	warn "reattaching attachments to maps";
		2552	reattach $_ for values %MAP;
		2553	warn "reattaching attachments to players";
		2554	reattach $_ for values %PLAYER;
		2555
		2556	warn "loading reloadable resources";
		2557	reload_resources;
		2558
		2559	warn "leaving sync_job";
		2560
		2561	1
		2562	} or do {
		2563	warn $@;
		2564	warn "error while reloading, exiting.";
		2565	exit 1;
		2566	};
		2567
		2568	warn "reloaded";
		2569	};
		2570
		2571	our $RELOAD_WATCHER; # used only during reload
		2572
		2573	register_command "reload" => sub {
		2574	my ($who, $arg) = @_;
		2575
		2576	if ($who->flag (FLAG_WIZ)) {
		2577	$who->message ("reloading server.");
		2578
		2579	# doing reload synchronously and two reloads happen back-to-back,
		2580	# coro crashes during coro_state_free->destroy here.
		2581
		2582	$RELOAD_WATCHER ||= Event->timer (
		2583	reentrant => 0,
		2584	after => 0,
		2585	data => WF_AUTOCANCEL,
		2586	cb => sub {
		2587	reload;
		2588	undef $RELOAD_WATCHER;
		2589	},
		2590	);
		2591	}
		2592	};
535		2593
536	unshift @INC, $LIBDIR;	2594	unshift @INC, $LIBDIR;
537		2595
538	load_extensions;	2596	my $bug_warning = 0;
		2597
		2598	$TICK_WATCHER = Event->timer (
		2599	reentrant => 0,
		2600	parked => 1,
		2601	prio => 0,
		2602	at => $NEXT_TICK || $TICK,
		2603	data => WF_AUTOCANCEL,
		2604	cb => sub {
		2605	if ($Coro::current != $Coro::main) {
		2606	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2607	unless ++$bug_warning > 10;
		2608	return;
		2609	}
		2610
		2611	$NOW = Event::time;
		2612
		2613	cf::server_tick; # one server iteration
		2614	$RUNTIME += $TICK;
		2615	$NEXT_TICK += $TICK;
		2616
		2617	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2618	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2619	Coro::async_pool {
		2620	write_runtime
		2621	or warn "ERROR: unable to write runtime file: $!";
		2622	};
		2623	}
		2624
		2625	$WAIT_FOR_TICK->broadcast;
		2626	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2627
		2628	# my $AFTER = Event::time;
		2629	# warn $AFTER - $NOW;#d#
		2630
		2631	# if we are delayed by four ticks or more, skip them all
		2632	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		2633
		2634	$TICK_WATCHER->at ($NEXT_TICK);
		2635	$TICK_WATCHER->start;
		2636	},
		2637	);
		2638
		2639	{
		2640	BDB::max_poll_time $TICK * 0.1;
		2641	$BDB_POLL_WATCHER = Event->io (
		2642	reentrant => 0,
		2643	fd => BDB::poll_fileno,
		2644	poll => 'r',
		2645	prio => 0,
		2646	data => WF_AUTOCANCEL,
		2647	cb => \&BDB::poll_cb,
		2648	);
		2649	BDB::min_parallel 8;
		2650
		2651	BDB::set_sync_prepare {
		2652	my $status;
		2653	my $current = $Coro::current;
		2654	(
		2655	sub {
		2656	$status = $!;
		2657	$current->ready; undef $current;
		2658	},
		2659	sub {
		2660	Coro::schedule while defined $current;
		2661	$! = $status;
		2662	},
		2663	)
		2664	};
		2665
		2666	unless ($DB_ENV) {
		2667	$DB_ENV = BDB::db_env_create;
		2668
		2669	cf::sync_job {
		2670	eval {
		2671	BDB::db_env_open
		2672	$DB_ENV,
		2673	$BDB_ENV_DIR,
		2674	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2675	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2676	0666;
		2677
		2678	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2679
		2680	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2681	$DB_ENV->set_lk_detect;
		2682	};
		2683
		2684	cf::cleanup "db_env_open(db): $@" if $@;
		2685	};
		2686	}
		2687	}
		2688
		2689	{
		2690	IO::AIO::min_parallel 8;
		2691
		2692	undef $Coro::AIO::WATCHER;
		2693	IO::AIO::max_poll_time $TICK * 0.1;
		2694	$AIO_POLL_WATCHER = Event->io (
		2695	reentrant => 0,
		2696	data => WF_AUTOCANCEL,
		2697	fd => IO::AIO::poll_fileno,
		2698	poll => 'r',
		2699	prio => 6,
		2700	cb => \&IO::AIO::poll_cb,
		2701	);
		2702	}
		2703
		2704	END { cf::emergency_save }
539		2705
540	1	2706	1
541		2707

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