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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.48 by root, Sun Aug 27 15:24:22 2006 UTC vs.
Revision 1.164 by root, Thu Jan 11 01:24:25 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 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
26	our $NEXT_TICK;	49	our $NEXT_TICK;
		50	our $NOW;
		51
		52	our %CFG;
		53
		54	our $UPTIME; $UPTIME ||= time;
		55	our $RUNTIME;
		56
		57	our %PLAYER; # all users
		58	our %MAP; # all maps
		59	our $LINK_MAP; # the special {link} map
		60	our $RANDOM_MAPS = cf::localdir . "/random";
		61
		62	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		63	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		64
		65	binmode STDOUT;
		66	binmode STDERR;
		67
		68	# read virtual server time, if available
		69	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		70	open my $fh, "<", cf::localdir . "/runtime"
		71	or die "unable to read runtime file: $!";
		72	$RUNTIME = <$fh> + 0.;
		73	}
		74
		75	mkdir cf::localdir;
		76	mkdir cf::localdir . "/" . cf::playerdir;
		77	mkdir cf::localdir . "/" . cf::tmpdir;
		78	mkdir cf::localdir . "/" . cf::uniquedir;
		79	mkdir $RANDOM_MAPS;
		80
		81	# a special map that is always available
		82	our $LINK_MAP;
		83	our $EMERGENCY_POSITION;
		84
		85	#############################################################################
		86
		87	=head2 GLOBAL VARIABLES
		88
		89	=over 4
		90
		91	=item $cf::UPTIME
		92
		93	The timestamp of the server start (so not actually an uptime).
		94
		95	=item $cf::RUNTIME
		96
		97	The time this server has run, starts at 0 and is increased by $cf::TICK on
		98	every server tick.
		99
		100	=item $cf::LIBDIR
		101
		102	The perl library directory, where extensions and cf-specific modules can
		103	be found. It will be added to C<@INC> automatically.
		104
		105	=item $cf::NOW
		106
		107	The time of the last (current) server tick.
		108
		109	=item $cf::TICK
		110
		111	The interval between server ticks, in seconds.
		112
		113	=item %cf::CFG
		114
		115	Configuration for the server, loaded from C</etc/crossfire/config>, or
		116	from wherever your confdir points to.
		117
		118	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		119
		120	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		121	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		122	processing has been done. Call C<< ->wait >> on them to maximise the
		123	window of cpu time available, or simply to synchronise to the server tick.
		124
		125	=back
		126
		127	=cut
27		128
28	BEGIN {	129	BEGIN {
29	*CORE::GLOBAL::warn = sub {	130	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	131	my $msg = join "", @_;
		132	utf8::encode $msg;
		133
31	$msg .= "\n"	134	$msg .= "\n"
32	unless $msg =~ /\n$/;	135	unless $msg =~ /\n$/;
33		136
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	137	LOG llevError, $msg;
36	};	138	};
37	}	139	}
38		140
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	141	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		142	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	143	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	144	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	145	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	146	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		147
75	# we bless all objects into (empty) derived classes to force a method lookup	148	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	149	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	150	for my $pkg (qw(
		151	cf::global cf::attachable
		152	cf::object cf::object::player
		153	cf::client cf::player
		154	cf::arch cf::living
		155	cf::map cf::party cf::region
		156	)) {
78	no strict 'refs';	157	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	158	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	159	}
81		160
82	$Event::DIED = sub {	161	$Event::DIED = sub {
83	warn "error in event callback: @_";	162	warn "error in event callback: @_";
84	};	163	};
85		164
86	my %ext_pkg;	165	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		166
92	#############################################################################	167	=over 4
93	# utility functions	168
		169	=item dumpval $ref
		170
		171	=cut
		172
		173	sub dumpval {
		174	eval {
		175	local $SIG{__DIE__};
		176	my $d;
		177	if (1) {
		178	$d = new Data::Dumper([$_[0]], ["*var"]);
		179	$d->Terse(1);
		180	$d->Indent(2);
		181	$d->Quotekeys(0);
		182	$d->Useqq(1);
		183	#$d->Bless(...);
		184	$d->Seen($_[1]) if @_ > 1;
		185	$d = $d->Dump();
		186	}
		187	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		188	$d
		189	} || "[unable to dump $_[0]: '$@']";
		190	}
94		191
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	192	use JSON::Syck (); # TODO# replace by JSON::PC once working
		193
		194	=item $ref = cf::from_json $json
		195
		196	Converts a JSON string into the corresponding perl data structure.
		197
		198	=cut
96		199
97	sub from_json($) {	200	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	201	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	202	JSON::Syck::Load $_[0]
100	}	203	}
101		204
		205	=item $json = cf::to_json $ref
		206
		207	Converts a perl data structure into its JSON representation.
		208
		209	=cut
		210
102	sub to_json($) {	211	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	212	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	213	JSON::Syck::Dump $_[0]
105	}	214	}
106		215
		216	=item cf::lock_wait $string
		217
		218	Wait until the given lock is available. See cf::lock_acquire.
		219
		220	=item my $lock = cf::lock_acquire $string
		221
		222	Wait until the given lock is available and then acquires it and returns
		223	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		224	for example when the coroutine gets canceled), the lock is automatically
		225	returned.
		226
		227	Lock names should begin with a unique identifier (for example, cf::map::find
		228	uses map_find and cf::map::load uses map_load).
		229
		230	=cut
		231
		232	our %LOCK;
		233
		234	sub lock_wait($) {
		235	my ($key) = @_;
		236
		237	# wait for lock, if any
		238	while ($LOCK{$key}) {
		239	push @{ $LOCK{$key} }, $Coro::current;
		240	Coro::schedule;
		241	}
		242	}
		243
		244	sub lock_acquire($) {
		245	my ($key) = @_;
		246
		247	# wait, to be sure we are not locked
		248	lock_wait $key;
		249
		250	$LOCK{$key} = [];
		251
		252	Coro::guard {
		253	# wake up all waiters, to be on the safe side
		254	$_->ready for @{ delete $LOCK{$key} };
		255	}
		256	}
		257
		258	sub freeze_mainloop {
		259	return unless $TICK_WATCHER->is_active;
		260
		261	my $guard = Coro::guard { $TICK_WATCHER->start };
		262	$TICK_WATCHER->stop;
		263	$guard
		264	}
		265
		266	=item cf::async { BLOCK }
		267
		268	Currently the same as Coro::async_pool, meaning you cannot use
		269	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		270	thing you are allowed to do is call C<prio> on it.
		271
		272	=cut
		273
		274	BEGIN { *async = \&Coro::async_pool }
		275
		276	=item cf::sync_job { BLOCK }
		277
		278	The design of crossfire+ requires that the main coro ($Coro::main) is
		279	always able to handle events or runnable, as crossfire+ is only partly
		280	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		281
		282	If it must be done, put the blocking parts into C<sync_job>. This will run
		283	the given BLOCK in another coroutine while waiting for the result. The
		284	server will be frozen during this time, so the block should either finish
		285	fast or be very important.
		286
		287	=cut
		288
		289	sub sync_job(&) {
		290	my ($job) = @_;
		291
		292	if ($Coro::current == $Coro::main) {
		293	# this is the main coro, too bad, we have to block
		294	# till the operation succeeds, freezing the server :/
		295
		296	# TODO: use suspend/resume instead
		297	# (but this is cancel-safe)
		298	my $freeze_guard = freeze_mainloop;
		299
		300	my $busy = 1;
		301	my @res;
		302
		303	(async {
		304	@res = eval { $job->() };
		305	warn $@ if $@;
		306	undef $busy;
		307	})->prio (Coro::PRIO_MAX);
		308
		309	while ($busy) {
		310	Coro::cede or Event::one_event;
		311	}
		312
		313	wantarray ? @res : $res[0]
		314	} else {
		315	# we are in another coroutine, how wonderful, everything just works
		316
		317	$job->()
		318	}
		319	}
		320
		321	=item $coro = cf::async_ext { BLOCK }
		322
		323	Like async, but this coro is automatically being canceled when the
		324	extension calling this is being unloaded.
		325
		326	=cut
		327
		328	sub async_ext(&) {
		329	my $cb = shift;
		330
		331	my $coro = &Coro::async ($cb);
		332
		333	$coro->on_destroy (sub {
		334	delete $EXT_CORO{$coro+0};
		335	});
		336	$EXT_CORO{$coro+0} = $coro;
		337
		338	$coro
		339	}
		340
		341	sub write_runtime {
		342	my $runtime = cf::localdir . "/runtime";
		343
		344	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		345	or return;
		346
		347	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		348	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		349	and return;
		350
		351	aio_fsync $fh
		352	and return;
		353
		354	close $fh
		355	or return;
		356
		357	aio_rename "$runtime~", $runtime
		358	and return;
		359
		360	1
		361	}
		362
		363	=back
		364
		365	=cut
		366
107	#############################################################################	367	#############################################################################
108	# "new" plug-in system
109		368
		369	package cf::path;
		370
		371	use overload
		372	'""' => \&as_string;
		373
		374	# used to convert map paths into valid unix filenames by repalcing / by ∕
		375	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		376
		377	sub register {
		378	my ($pkg, $prefix) = @_;
		379
		380	$EXT_MAP{$prefix} = $pkg;
		381	}
		382
		383	sub new {
		384	my ($class, $path, $base) = @_;
		385
		386	return $path if ref $path;
		387
		388	my $self = {};
		389
		390	# {... are special paths that are not being touched
		391	# ?xxx/... are special absolute paths
		392	# ?random/... random maps
		393	# /! non-realised random map exit
		394	# /... normal maps
		395	# ~/... per-player maps without a specific player (DO NOT USE)
		396	# ~user/... per-player map of a specific user
		397
		398	$path =~ s/$PATH_SEP/\//go;
		399
		400	if ($path =~ /^{/) {
		401	# fine as it is
		402	} else {
		403	if ($path =~ s{^~([^/]+)?}{}) {
		404	# ~user
		405	$self->{user_rel} = 1;
		406
		407	if (defined $1) {
		408	$self->{user} = $1;
		409	} elsif ($base =~ m{^~([^/]+)/}) {
		410	$self->{user} = $1;
		411	} else {
		412	warn "cannot resolve user-relative path without user <$path,$base>\n";
		413	}
		414	} elsif ($path =~ s{^\?([^/]+)/}{}) {
		415	# ?...
		416	$self->{ext} = $1;
		417	if (my $ext = $EXT_MAP{$1}) {
		418	bless $self, $ext;
		419	}
		420	} elsif ($path =~ /^\//) {
		421	# /...
		422	# already absolute
		423	} else {
		424	# relative
		425	$base =~ s{[^/]+/?$}{};
		426	return $class->new ("$base/$path");
		427	}
		428
		429	for ($path) {
		430	redo if s{/\.?/}{/};
		431	redo if s{/[^/]+/\.\./}{/};
		432	}
		433	}
		434
		435	$self->{path} = $path;
		436
		437	if ("HASH" eq ref $self) {
		438	bless $self, $class;
		439	} else {
		440	$self->init;
		441	}
		442
		443	for my $ext (values %EXT_MAP) {
		444	if (my $subst = $ext->substitute ($self)) {
		445	return $subst;
		446	}
		447	}
		448
		449	$self
		450	}
		451
		452	sub init {
		453	# nop
		454	}
		455
		456	sub substitute {
		457	()
		458	}
		459
		460	# the name / primary key / in-game path
		461	sub as_string {
		462	my ($self) = @_;
		463
		464	$self->{user_rel} ? "~$self->{user}$self->{path}"
		465	: $self->{ext} ? "?$self->{ext}/$self->{path}"
		466	: $self->{path}
		467	}
		468
		469	# the displayed name, this is a one way mapping
		470	sub visible_name {
		471	&as_string
		472	}
		473
		474	# escape the /'s in the path
		475	sub _escaped_path {
		476	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		477
		478	$path
		479	}
		480
		481	# the original (read-only) location
		482	sub load_path {
		483	my ($self) = @_;
		484
		485	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		486	}
		487
		488	# the temporary/swap location
		489	sub save_path {
		490	my ($self) = @_;
		491
		492	$self->{user_rel}
		493	? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		494	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		495	}
		496
		497	# the unique path, undef == no special unique path
		498	sub uniq_path {
		499	my ($self) = @_;
		500
		501	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		502	}
		503
		504	# this is somewhat ugly, but style maps do need special treatment
		505	sub is_style_map {
		506	$_[0]{path} =~ m{^/styles/}
		507	}
		508
		509	sub load_orig {
		510	my ($self) = @_;
		511
		512	&cf::map::load_map_header ($self->load_path)
		513	}
		514
		515	sub load_temp {
		516	my ($self) = @_;
		517
		518	&cf::map::load_map_header ($self->save_path)
		519	}
		520
		521	sub unlink_save {
		522	my ($self) = @_;
		523
		524	utf8::encode (my $save = $self->save_path);
		525	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink $save;
		526	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink "$save.pst";
		527	}
		528
		529	package cf;
		530
		531	#############################################################################
		532
		533	=head2 ATTACHABLE OBJECTS
		534
		535	Many objects in crossfire are so-called attachable objects. That means you can
		536	attach callbacks/event handlers (a collection of which is called an "attachment")
		537	to it. All such attachable objects support the following methods.
		538
		539	In the following description, CLASS can be any of C<global>, C<object>
		540	C<player>, C<client> or C<map> (i.e. the attachable objects in
		541	crossfire+).
		542
		543	=over 4
		544
110	=item $object->attach ($attachment, key => $value...)	545	=item $attachable->attach ($attachment, key => $value...)
111		546
112	Attach a pre-registered attachment to an object.	547	=item $attachable->detach ($attachment)
113		548
114	=item $player->attach ($attachment, key => $value...)	549	Attach/detach a pre-registered attachment to a specific object and give it
		550	the specified key/value pairs as arguments.
115		551
116	Attach a pre-registered attachment to a player.	552	Example, attach a minesweeper attachment to the given object, making it a
		553	10x10 minesweeper game:
117		554
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	555	$obj->attach (minesweeper => width => 10, height => 10);
119		556
120	Attach a pre-registered attachment to a map.	557	=item $bool = $attachable->attached ($name)
121		558
122	=item cf::attach_global ...	559	Checks wether the named attachment is currently attached to the object.
123		560
124	Attach handlers for global events.	561	=item cf::CLASS->attach ...
125		562
126	This and all following C<attach_*>-functions expect any number of the	563	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	564
		565	Define an anonymous attachment and attach it to all objects of the given
		566	CLASS. See the next function for an explanation of its arguments.
		567
		568	You can attach to global events by using the C<cf::global> class.
		569
		570	Example, log all player logins:
		571
		572	cf::player->attach (
		573	on_login => sub {
		574	my ($pl) = @_;
		575	...
		576	},
		577	);
		578
		579	Example, attach to the jeweler skill:
		580
		581	cf::object->attach (
		582	type => cf::SKILL,
		583	subtype => cf::SK_JEWELER,
		584	on_use_skill => sub {
		585	my ($sk, $ob, $part, $dir, $msg) = @_;
		586	...
		587	},
		588	);
		589
		590	=item cf::CLASS::attachment $name, ...
		591
		592	Register an attachment by C<$name> through which attachable objects of the
		593	given CLASS can refer to this attachment.
		594
		595	Some classes such as crossfire maps and objects can specify attachments
		596	that are attached at load/instantiate time, thus the need for a name.
		597
		598	These calls expect any number of the following handler/hook descriptions:
128		599
129	=over 4	600	=over 4
130		601
131	=item prio => $number	602	=item prio => $number
132		603
…		…
134	by another C<prio> setting). Lower priority handlers get executed	605	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	606	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	607	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	608	unless you know what you are doing.
138		609
		610	=item type => $type
		611
		612	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		613	given type of objects only (the additional parameter C<subtype> can be
		614	used to further limit to the given subtype).
		615
139	=item on_I<event> => \&cb	616	=item on_I<event> => \&cb
140		617
141	Call the given code reference whenever the named event happens (event is	618	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	619	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	620	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	629	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	630	object/class are recognised.
154		631
155	=back	632	=back
156		633
157	=item cf::attach_to_type $object_type, $subtype, ...	634	Example, define an attachment called "sockpuppet" that calls the given
		635	event handler when a monster attacks:
158		636
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	637	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	638	on_skill_attack => sub {
161	type.	639	my ($self, $victim) = @_;
		640	...
		641	}
		642	}
162		643
163	=item cf::attach_to_objects ...	644	=item $attachable->valid
164		645
165	Attach handlers to all objects. Do not use this except for debugging or	646	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	647	C-level object still exists. If you try to access an object that has no
167	the game.	648	valid C counterpart anymore you get an exception at runtime. This method
168		649	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	650	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		651
179	=cut	652	=cut
180		653
181	# the following variables are defined in .xs and must not be re-created	654	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	655	our @CB_GLOBAL = (); # registry for all global events
		656	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	657	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	658	our @CB_PLAYER = ();
		659	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	660	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	661	our @CB_MAP = ();
187		662
188	my %attachment;	663	my %attachment;
189		664
190	sub _attach_cb($\%$$$) {	665	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	666	my ($registry, $event, $prio, $cb) = @_;
192		667
193	use sort 'stable';	668	use sort 'stable';
194		669
195	$cb = [$prio, $cb];	670	$cb = [$prio, $cb];
196		671
197	@{$registry->[$event]} = sort	672	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	673	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	674	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	675	}
		676
		677	# hack
		678	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		679
204	# attach handles attaching event callbacks	680	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	681	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	682	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	683	sub _attach {
208	my ($registry, $klass, @arg) = @_;	684	my ($registry, $klass, @arg) = @_;
209		685
		686	my $object_type;
210	my $prio = 0;	687	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	688	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		689
		690	#TODO: get rid of this hack
		691	if ($attachable_klass{$klass}) {
		692	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		693	}
218		694
219	while (@arg) {	695	while (@arg) {
220	my $type = shift @arg;	696	my $type = shift @arg;
221		697
222	if ($type eq "prio") {	698	if ($type eq "prio") {
223	$prio = shift @arg;	699	$prio = shift @arg;
224		700
		701	} elsif ($type eq "type") {
		702	$object_type = shift @arg;
		703	$registry = $CB_TYPE[$object_type] ||= [];
		704
		705	} elsif ($type eq "subtype") {
		706	defined $object_type or Carp::croak "subtype specified without type";
		707	my $object_subtype = shift @arg;
		708	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		709
225	} elsif ($type eq "package") {	710	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	711	my $pkg = shift @arg;
227		712
228	while (my ($name, $id) = each %cb_id) {	713	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	714	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	715	_attach_cb $registry, $id, $prio, $cb;
231	}	716	}
232	}	717	}
233		718
234	} elsif (exists $cb_id{$type}) {	719	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	720	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		721
237	} elsif (ref $type) {	722	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	723	warn "attaching objects not supported, ignoring.\n";
239		724
240	} else {	725	} else {
241	shift @arg;	726	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	727	warn "attach argument '$type' not supported, ignoring.\n";
243	}	728	}
244	}	729	}
245
246	\%undo
247	}	730	}
248		731
249	sub _attach_attachment {	732	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	733	my ($obj, $name, %arg) = @_;
251		734
252	my $res;	735	return if exists $obj->{_attachment}{$name};
253		736
254	if (my $attach = $attachment{$name}) {	737	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	738	my $registry = $obj->registry;
256		739
257	for (@$attach) {	740	for (@$attach) {
258	my ($klass, @attach) = @$_;	741	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	742	_attach $registry, $klass, @attach;
260	}	743	}
261		744
262	$obj->{$name} = \%arg;	745	$obj->{$name} = \%arg;
263	} else {	746	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	747	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	748	}
266		749
267	push @{$obj->{_attachment}}, $name;	750	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	751	}
272		752
273	sub cf::object::attach {	753	sub cf::attachable::attach {
		754	if (ref $_[0]) {
		755	_object_attach @_;
		756	} else {
		757	_attach shift->_attach_registry, @_;
		758	}
		759	};
		760
		761	# all those should be optimised
		762	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	763	my ($obj, $name) = @_;
275		764
276	_attach_attachment $obj, $name, %arg;	765	if (ref $obj) {
277	}	766	delete $obj->{_attachment}{$name};
		767	reattach ($obj);
		768	} else {
		769	Carp::croak "cannot, currently, detach class attachments";
		770	}
		771	};
278		772
279	sub cf::player::attach {	773	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	774	my ($obj, $name) = @_;
281		775
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	776	exists $obj->{_attachment}{$name}
283	}	777	}
284		778
285	sub cf::map::attach {	779	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	780	eval "#line " . __LINE__ . " 'cf.pm'
		781	sub cf::\L$klass\E::_attach_registry {
		782	(\\\@CB_$klass, KLASS_$klass)
		783	}
287		784
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	785	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	786	my \$name = shift;
316		787
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	788	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		789	}
		790	";
		791	die if $@;
318	}	792	}
319		793
320	our $override;	794	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	795	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		796
…		…
336	for (@$callbacks) {	810	for (@$callbacks) {
337	eval { &{$_->[1]} };	811	eval { &{$_->[1]} };
338		812
339	if ($@) {	813	if ($@) {
340	warn "$@";	814	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	815	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	816	override;
343	}	817	}
344		818
345	return 1 if $override;	819	return 1 if $override;
346	}	820	}
347		821
348	0	822	0
349	}	823	}
		824
		825	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		826
		827	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		828
		829	Generate an object-specific event with the given arguments.
		830
		831	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		832	removed in future versions), and there is no public API to access override
		833	results (if you must, access C<@cf::invoke_results> directly).
		834
		835	=back
		836
		837	=cut
350		838
351	#############################################################################	839	#############################################################################
352	# object support	840	# object support
353		841
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361	attach $obj, $name, %{$args || {} };
362	}
363	}
364
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	842	sub reattach {
		843	# basically do the same as instantiate, without calling instantiate
367	my ($obj) = @_;	844	my ($obj) = @_;
		845
368	my $registry = $obj->registry;	846	my $registry = $obj->registry;
369		847
370	@$registry = ();	848	@$registry = ();
371		849
		850	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		851
372	for my $name (@{ $obj->{_attachment} }) {	852	for my $name (keys %{ $obj->{_attachment} || {} }) {
373	if (my $attach = $attachment{$name}) {	853	if (my $attach = $attachment{$name}) {
374	for (@$attach) {	854	for (@$attach) {
375	my ($klass, @attach) = @$_;	855	my ($klass, @attach) = @$_;
376	_attach @$registry, $klass, @attach;	856	_attach $registry, $klass, @attach;
377	}	857	}
378	} else {	858	} else {
379	warn "object uses attachment '$name' that is not available, postponing.\n";	859	warn "object uses attachment '$name' that is not available, postponing.\n";
380	}	860	}
381	}	861	}
382	}	862	}
383		863
		864	cf::attachable->attach (
		865	prio => -1000000,
		866	on_instantiate => sub {
		867	my ($obj, $data) = @_;
		868
		869	$data = from_json $data;
		870
		871	for (@$data) {
		872	my ($name, $args) = @$_;
		873
		874	$obj->attach ($name, %{$args || {} });
		875	}
		876	},
		877	on_reattach => \&reattach,
		878	on_clone => sub {
		879	my ($src, $dst) = @_;
		880
		881	@{$dst->registry} = @{$src->registry};
		882
		883	%$dst = %$src;
		884
		885	%{$dst->{_attachment}} = %{$src->{_attachment}}
		886	if exists $src->{_attachment};
		887	},
		888	);
		889
384	sub object_freezer_save {	890	sub object_freezer_save {
385	my ($filename, $objs) = @_;	891	my ($filename, $rdata, $objs) = @_;
386		892
387	$filename .= ".pst";	893	sync_job {
		894	if (length $$rdata) {
		895	warn sprintf "saving %s (%d,%d)\n",
		896	$filename, length $$rdata, scalar @$objs;
388		897
389	if (@$objs) {	898	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	899	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	900	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	901	aio_fsync $fh;
393	close $fh;	902	close $fh;
		903
		904	if (@$objs) {
		905	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		906	chmod SAVE_MODE, $fh;
		907	my $data = Storable::nfreeze { version => 1, objs => $objs };
		908	aio_write $fh, 0, (length $data), $data, 0;
		909	aio_fsync $fh;
		910	close $fh;
		911	aio_rename "$filename.pst~", "$filename.pst";
		912	}
		913	} else {
		914	aio_unlink "$filename.pst";
		915	}
		916
394	rename "$filename~", $filename;	917	aio_rename "$filename~", $filename;
		918	} else {
		919	warn "FATAL: $filename~: $!\n";
		920	}
395	} else {	921	} else {
396	unlink $filename;	922	aio_unlink $filename;
		923	aio_unlink "$filename.pst";
		924	}
397	}	925	}
		926	}
		927
		928	sub object_freezer_as_string {
		929	my ($rdata, $objs) = @_;
		930
		931	use Data::Dumper;
		932
		933	$$rdata . Dumper $objs
398	}	934	}
399		935
400	sub object_thawer_load {	936	sub object_thawer_load {
401	my ($filename) = @_;	937	my ($filename) = @_;
402		938
403	open my $fh, "<:raw:perlio", "$filename.pst"	939	my ($data, $av);
		940
		941	(aio_load $filename, $data) >= 0
404	or return;	942	or return;
405		943
406	eval { local $/; (Storable::thaw <$fh>)->{objs} }	944	unless (aio_stat "$filename.pst") {
407	}	945	(aio_load "$filename.pst", $av) >= 0
408		946	or return;
409	attach_to_objects	947	$av = eval { (Storable::thaw $av)->{objs} };
410	prio => -1000000,
411	on_clone => sub {
412	my ($src, $dst) = @_;
413
414	@{$dst->registry} = @{$src->registry};
415
416	%$dst = %$src;
417
418	$dst->{_attachment} = [@{ $src->{_attachment} }]
419	if exists $src->{_attachment};
420	},	948	}
421	;	949
		950	warn sprintf "loading %s (%d)\n",
		951	$filename, length $data, scalar @{$av || []};#d#
		952	return ($data, $av);
		953	}
422		954
423	#############################################################################	955	#############################################################################
424	# old plug-in events	956	# command handling &c
425		957
426	sub inject_event {	958	=item cf::register_command $name => \&callback($ob,$args);
427	my $extension = shift;
428	my $event_code = shift;
429		959
430	my $cb = $hook[$event_code]{$extension}	960	Register a callback for execution when the client sends the user command
431	or return;	961	$name.
432		962
433	&$cb	963	=cut
434	}
435
436	sub inject_global_event {
437	my $event = shift;
438
439	my $cb = $hook[$event]
440	or return;
441
442	List::Util::max map &$_, values %$cb
443	}
444
445	sub inject_command {
446	my ($name, $obj, $params) = @_;
447
448	for my $cmd (@{ $command{$name} }) {
449	$cmd->[1]->($obj, $params);
450	}
451
452	-1
453	}
454		964
455	sub register_command {	965	sub register_command {
456	my ($name, $time, $cb) = @_;	966	my ($name, $cb) = @_;
457		967
458	my $caller = caller;	968	my $caller = caller;
459	#warn "registering command '$name/$time' to '$caller'";	969	#warn "registering command '$name/$time' to '$caller'";
460		970
461	push @{ $command{$name} }, [$time, $cb, $caller];	971	push @{ $COMMAND{$name} }, [$caller, $cb];
462	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
463	}	972	}
		973
		974	=item cf::register_extcmd $name => \&callback($pl,$packet);
		975
		976	Register a callbackf ro execution when the client sends an extcmd packet.
		977
		978	If the callback returns something, it is sent back as if reply was being
		979	called.
		980
		981	=cut
464		982
465	sub register_extcmd {	983	sub register_extcmd {
466	my ($name, $cb) = @_;	984	my ($name, $cb) = @_;
467		985
468	my $caller = caller;	986	$EXTCMD{$name} = $cb;
469	#warn "registering extcmd '$name' to '$caller'";
470
471	$extcmd{$name} = [$cb, $caller];
472	}	987	}
473		988
474	sub register {	989	cf::player->attach (
475	my ($base, $pkg) = @_;	990	on_command => sub {
		991	my ($pl, $name, $params) = @_;
476		992
477	#TODO	993	my $cb = $COMMAND{$name}
478	}	994	or return;
		995
		996	for my $cmd (@$cb) {
		997	$cmd->[1]->($pl->ob, $params);
		998	}
		999
		1000	cf::override;
		1001	},
		1002	on_extcmd => sub {
		1003	my ($pl, $buf) = @_;
		1004
		1005	my $msg = eval { from_json $buf };
		1006
		1007	if (ref $msg) {
		1008	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		1009	if (my %reply = $cb->($pl, $msg)) {
		1010	$pl->ext_reply ($msg->{msgid}, %reply);
		1011	}
		1012	}
		1013	} else {
		1014	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1015	}
		1016
		1017	cf::override;
		1018	},
		1019	);
479		1020
480	sub load_extension {	1021	sub load_extension {
481	my ($path) = @_;	1022	my ($path) = @_;
482		1023
483	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1024	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
484	my $base = $1;	1025	my $base = $1;
485	my $pkg = $1;	1026	my $pkg = $1;
486	$pkg =~ s/[^[:word:]]/_/g;	1027	$pkg =~ s/[^[:word:]]/_/g;
487	$pkg = "ext::$pkg";	1028	$pkg = "ext::$pkg";
488		1029
489	warn "loading '$path' into '$pkg'\n";	1030	warn "... loading '$path' into '$pkg'\n";
490		1031
491	open my $fh, "<:utf8", $path	1032	open my $fh, "<:utf8", $path
492	or die "$path: $!";	1033	or die "$path: $!";
493		1034
494	my $source =	1035	my $source =
…		…
496	. "#line 1 \"$path\"\n{\n"	1037	. "#line 1 \"$path\"\n{\n"
497	. (do { local $/; <$fh> })	1038	. (do { local $/; <$fh> })
498	. "\n};\n1";	1039	. "\n};\n1";
499		1040
500	eval $source	1041	eval $source
501	or die "$path: $@";	1042	or die $@ ? "$path: $@\n"
		1043	: "extension disabled.\n";
502		1044
503	push @exts, $pkg;	1045	push @EXTS, $pkg;
504	$ext_pkg{$base} = $pkg;
505
506	# no strict 'refs';
507	# @{"$pkg\::ISA"} = ext::;
508
509	register $base, $pkg;
510	}
511
512	sub unload_extension {
513	my ($pkg) = @_;
514
515	warn "removing extension $pkg\n";
516
517	# remove hooks
518	#TODO
519	# for my $idx (0 .. $#PLUGIN_EVENT) {
520	# delete $hook[$idx]{$pkg};
521	# }
522
523	# remove commands
524	for my $name (keys %command) {
525	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
526
527	if (@cb) {
528	$command{$name} = \@cb;
529	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
530	} else {
531	delete $command{$name};
532	delete $COMMAND{"$name\000"};
533	}
534	}
535
536	# remove extcmds
537	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
538	delete $extcmd{$name};
539	}
540
541	if (my $cb = $pkg->can ("unload")) {
542	eval {
543	$cb->($pkg);
544	1
545	} or warn "$pkg unloaded, but with errors: $@";
546	}
547
548	Symbol::delete_package $pkg;
549	}	1046	}
550		1047
551	sub load_extensions {	1048	sub load_extensions {
552	my $LIBDIR = maps_directory "perl";
553
554	for my $ext (<$LIBDIR/*.ext>) {	1049	for my $ext (<$LIBDIR/*.ext>) {
555	next unless -r $ext;	1050	next unless -r $ext;
556	eval {	1051	eval {
557	load_extension $ext;	1052	load_extension $ext;
558	1	1053	1
559	} or warn "$ext not loaded: $@";	1054	} or warn "$ext not loaded: $@";
560	}	1055	}
561	}	1056	}
562		1057
563	sub _perl_reload(&) {
564	my ($msg) = @_;
565
566	$msg->("reloading...");
567
568	eval {
569	# 1. cancel all watchers
570	$_->cancel for Event::all_watchers;
571
572	# 2. unload all extensions
573	for (@exts) {
574	$msg->("unloading <$_>");
575	unload_extension $_;
576	}
577
578	# 3. unload all modules loaded from $LIBDIR
579	while (my ($k, $v) = each %INC) {
580	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
581
582	$msg->("removing <$k>");
583	delete $INC{$k};
584
585	$k =~ s/\.pm$//;
586	$k =~ s/\//::/g;
587
588	if (my $cb = $k->can ("unload_module")) {
589	$cb->();
590	}
591
592	Symbol::delete_package $k;
593	}
594
595	# 4. get rid of safe::, as good as possible
596	Symbol::delete_package "safe::$_"
597	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
598
599	# 5. remove register_script_function callbacks
600	# TODO
601
602	# 6. unload cf.pm "a bit"
603	delete $INC{"cf.pm"};
604
605	# don't, removes xs symbols, too,
606	# and global variables created in xs
607	#Symbol::delete_package __PACKAGE__;
608
609	# 7. reload cf.pm
610	$msg->("reloading cf.pm");
611	require cf;
612	};
613	$msg->($@) if $@;
614
615	$msg->("reloaded");
616	};
617
618	sub perl_reload() {
619	_perl_reload {
620	warn $_[0];
621	print "$_[0]\n";
622	};
623	}
624
625	register_command "perl-reload", 0, sub {
626	my ($who, $arg) = @_;
627
628	if ($who->flag (FLAG_WIZ)) {
629	_perl_reload {
630	warn $_[0];
631	$who->message ($_[0]);
632	};
633	}
634	};
635
636	#############################################################################
637	# extcmd framework, basically convert ext <msg>
638	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
639
640	attach_to_players
641	on_extcmd => sub {
642	my ($pl, $buf) = @_;
643
644	my $msg = eval { from_json $buf };
645
646	if (ref $msg) {
647	if (my $cb = $extcmd{$msg->{msgtype}}) {
648	if (my %reply = $cb->[0]->($pl, $msg)) {
649	$pl->ext_reply ($msg->{msgid}, %reply);
650	}
651	}
652	} else {
653	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
654	}
655
656	cf::override;
657	},
658	;
659
660	#############################################################################	1058	#############################################################################
661	# load/save/clean perl data associated with a map	1059	# load/save/clean perl data associated with a map
662		1060
663	*cf::mapsupport::on_clean = sub {	1061	*cf::mapsupport::on_clean = sub {
664	my ($map) = @_;	1062	my ($map) = @_;
665		1063
666	my $path = $map->tmpname;	1064	my $path = $map->tmpname;
667	defined $path or return;	1065	defined $path or return;
668		1066
669	unlink "$path.cfperl";
670	unlink "$path.pst";	1067	unlink "$path.pst";
671	};	1068	};
672		1069
673	*cf::mapsupport::on_swapin =	1070	cf::map->attach (prio => -10000, package => cf::mapsupport::);
674	*cf::mapsupport::on_load = sub {	1071
		1072	#############################################################################
		1073
		1074	=head2 CORE EXTENSIONS
		1075
		1076	Functions and methods that extend core crossfire objects.
		1077
		1078	=cut
		1079
		1080	package cf::player;
		1081
		1082	use Coro::AIO;
		1083
		1084	=head3 cf::player
		1085
		1086	=over 4
		1087
		1088	=item cf::player::find $login
		1089
		1090	Returns the given player object, loading it if necessary (might block).
		1091
		1092	=cut
		1093
		1094	sub playerdir($) {
		1095	cf::localdir
		1096	. "/"
		1097	. cf::playerdir
		1098	. "/"
		1099	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1100	}
		1101
		1102	sub path($) {
		1103	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1104
		1105	(playerdir $login) . "/$login.pl"
		1106	}
		1107
		1108	sub find_active($) {
		1109	$cf::PLAYER{$_[0]}
		1110	and $cf::PLAYER{$_[0]}->active
		1111	and $cf::PLAYER{$_[0]}
		1112	}
		1113
		1114	sub exists($) {
		1115	my ($login) = @_;
		1116
		1117	$cf::PLAYER{$login}
		1118	or cf::sync_job { !aio_stat $login }
		1119	}
		1120
		1121	sub find($) {
		1122	return $cf::PLAYER{$_[0]} || do {
		1123	my $login = $_[0];
		1124
		1125	my $guard = cf::lock_acquire "user_find:$login";
		1126
		1127	$cf::PLAYER{$_[0]} || do {
		1128	my $pl = load_pl path $login
		1129	or return;
		1130	$cf::PLAYER{$login} = $pl
		1131	}
		1132	}
		1133	}
		1134
		1135	sub save($) {
		1136	my ($pl) = @_;
		1137
		1138	return if $pl->{deny_save};
		1139
		1140	my $path = path $pl;
		1141	my $guard = cf::lock_acquire "user_save:$path";
		1142
		1143	return if $pl->{deny_save};
		1144
		1145	aio_mkdir playerdir $pl, 0770;
		1146	$pl->{last_save} = $cf::RUNTIME;
		1147
		1148	$pl->save_pl ($path);
		1149	Coro::cede;
		1150	}
		1151
		1152	sub new($) {
		1153	my ($login) = @_;
		1154
		1155	my $self = create;
		1156
		1157	$self->ob->name ($login);
		1158	$self->{deny_save} = 1;
		1159
		1160	$cf::PLAYER{$login} = $self;
		1161
		1162	$self
		1163	}
		1164
		1165	=item $pl->quit_character
		1166
		1167	Nukes the player without looking back. If logged in, the connection will
		1168	be destroyed. May block for a long time.
		1169
		1170	=cut
		1171
		1172	sub quit_character {
		1173	my ($pl) = @_;
		1174
		1175	$pl->{deny_save} = 1;
		1176	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1177
		1178	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1179	$pl->deactivate;
		1180	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1181	$pl->ns->destroy if $pl->ns;
		1182
		1183	my $path = playerdir $pl;
		1184	my $temp = "$path~$cf::RUNTIME~deleting~";
		1185	aio_rename $path, $temp;
		1186	delete $cf::PLAYER{$pl->ob->name};
		1187	$pl->destroy;
		1188	IO::AIO::aio_rmtree $temp;
		1189	}
		1190
		1191	=item cf::player::list_logins
		1192
		1193	Returns am arrayref of all valid playernames in the system, can take a
		1194	while and may block, so not sync_job-capable, ever.
		1195
		1196	=cut
		1197
		1198	sub list_logins {
		1199	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1200	or return [];
		1201
		1202	my @logins;
		1203
		1204	for my $login (@$dirs) {
		1205	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1206	aio_read $fh, 0, 512, my $buf, 0 or next;
		1207	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1208
		1209	utf8::decode $login;
		1210	push @logins, $login;
		1211	}
		1212
		1213	\@logins
		1214	}
		1215
		1216	=item $player->maps
		1217
		1218	Returns an arrayref of cf::path's of all maps that are private for this
		1219	player. May block.
		1220
		1221	=cut
		1222
		1223	sub maps($) {
		1224	my ($pl) = @_;
		1225
		1226	my $files = aio_readdir playerdir $pl
		1227	or return;
		1228
		1229	my @paths;
		1230
		1231	for (@$files) {
		1232	utf8::decode $_;
		1233	next if /\.(?:pl|pst)$/;
		1234	next unless /^$PATH_SEP/o;
		1235
		1236	push @paths, new cf::path "~" . $pl->ob->name . "/" . $_;
		1237	}
		1238
		1239	\@paths
		1240	}
		1241
		1242	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1243
		1244	Sends an ext reply to the player.
		1245
		1246	=cut
		1247
		1248	sub ext_reply($$$%) {
		1249	my ($self, $id, %msg) = @_;
		1250
		1251	$msg{msgid} = $id;
		1252
		1253	$self->send ("ext " . cf::to_json \%msg);
		1254	}
		1255
		1256	package cf;
		1257
		1258	=back
		1259
		1260
		1261	=head3 cf::map
		1262
		1263	=over 4
		1264
		1265	=cut
		1266
		1267	package cf::map;
		1268
		1269	use Fcntl;
		1270	use Coro::AIO;
		1271
		1272	our $MAX_RESET = 3600;
		1273	our $DEFAULT_RESET = 3000;
		1274
		1275	sub generate_random_map {
		1276	my ($path, $rmp) = @_;
		1277
		1278	# mit "rum" bekleckern, nicht
		1279	cf::map::_create_random_map (
		1280	$path,
		1281	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1282	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1283	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1284	$rmp->{exit_on_final_map},
		1285	$rmp->{xsize}, $rmp->{ysize},
		1286	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1287	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1288	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1289	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1290	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1291	(cf::region::find $rmp->{region}), $rmp->{custom}
		1292	)
		1293	}
		1294
		1295	# and all this just because we cannot iterate over
		1296	# all maps in C++...
		1297	sub change_all_map_light {
		1298	my ($change) = @_;
		1299
		1300	$_->change_map_light ($change)
		1301	for grep $_->outdoor, values %cf::MAP;
		1302	}
		1303
		1304	sub load_map_header($) {
		1305	my ($path) = @_;
		1306
		1307	utf8::encode $path;
		1308	aio_open $path, O_RDONLY, 0
		1309	or return;
		1310
		1311	my $map = cf::map::new
		1312	or return;
		1313
		1314	# for better error messages only, will be overwritten later
		1315	$map->path ($path);
		1316
		1317	$map->load_header ($path)
		1318	or return;
		1319
		1320	$map->{load_path} = $path;
		1321
		1322	$map
		1323	}
		1324
		1325	sub find;
		1326	sub find {
		1327	my ($path, $origin) = @_;
		1328
		1329	#warn "find<$path,$origin>\n";#d#
		1330
		1331	$path = new cf::path $path, $origin && $origin->path;
		1332	my $key = $path->as_string;
		1333
		1334	cf::lock_wait "map_find:$key";
		1335
		1336	$cf::MAP{$key} || do {
		1337	my $guard = cf::lock_acquire "map_find:$key";
		1338
		1339	# do it the slow way
		1340	my $map = $path->load_temp;
		1341
		1342	Coro::cede;
		1343
		1344	if ($map) {
		1345	$map->last_access ((delete $map->{last_access})
		1346	|| $cf::RUNTIME); #d#
		1347	# safety
		1348	$map->{instantiate_time} = $cf::RUNTIME
		1349	if $map->{instantiate_time} > $cf::RUNTIME;
		1350	} else {
		1351	$map = $path->load_orig
		1352	or return;
		1353
		1354	$map->{load_original} = 1;
		1355	$map->{instantiate_time} = $cf::RUNTIME;
		1356	$map->last_access ($cf::RUNTIME);
		1357	$map->instantiate;
		1358
		1359	# per-player maps become, after loading, normal maps
		1360	$map->per_player (0) if $path->{user_rel};
		1361	}
		1362
		1363	$map->path ($key);
		1364	$map->{path} = $path;
		1365	$map->{last_save} = $cf::RUNTIME;
		1366
		1367	Coro::cede;
		1368
		1369	if ($map->should_reset) {
		1370	$map->reset;
		1371	undef $guard;
		1372	$map = find $path
		1373	or return;
		1374	}
		1375
		1376	$cf::MAP{$key} = $map
		1377	}
		1378	}
		1379
		1380	sub load {
		1381	my ($self) = @_;
		1382
		1383	my $path = $self->{path};
		1384	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1385
		1386	return if $self->in_memory != cf::MAP_SWAPPED;
		1387
		1388	$self->in_memory (cf::MAP_LOADING);
		1389
		1390	$self->alloc;
		1391	$self->load_objects ($self->{load_path}, 1)
		1392	or return;
		1393
		1394	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1395	if delete $self->{load_original};
		1396
		1397	if (my $uniq = $path->uniq_path) {
		1398	utf8::encode $uniq;
		1399	if (aio_open $uniq, O_RDONLY, 0) {
		1400	$self->clear_unique_items;
		1401	$self->load_objects ($uniq, 0);
		1402	}
		1403	}
		1404
		1405	Coro::cede;
		1406
		1407	# now do the right thing for maps
		1408	$self->link_multipart_objects;
		1409
		1410	if ($self->{path}->is_style_map) {
		1411	$self->{deny_save} = 1;
		1412	$self->{deny_reset} = 1;
		1413	} else {
		1414	$self->decay_objects;
		1415	$self->fix_auto_apply;
		1416	$self->update_buttons;
		1417	$self->set_darkness_map;
		1418	$self->difficulty ($self->estimate_difficulty)
		1419	unless $self->difficulty;
		1420	$self->activate;
		1421	}
		1422
		1423	Coro::cede;
		1424
		1425	$self->in_memory (cf::MAP_IN_MEMORY);
		1426	}
		1427
		1428	# find and load all maps in the 3x3 area around a map
		1429	sub load_diag {
675	my ($map) = @_;	1430	my ($map) = @_;
676		1431
677	my $path = $map->tmpname;	1432	my @diag; # diagonal neighbours
678	$path = $map->path unless defined $path;
679		1433
680	open my $fh, "<:raw", "$path.cfperl"	1434	for (0 .. 3) {
681	or return; # no perl data	1435	my $neigh = $map->tile_path ($_)
		1436	or next;
		1437	$neigh = find $neigh, $map
		1438	or next;
		1439	$neigh->load;
682		1440
683	my $data = Storable::thaw do { local $/; <$fh> };	1441	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1442	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1443	}
684		1444
685	$data->{version} <= 1	1445	for (@diag) {
686	or return; # too new	1446	my $neigh = find @$_
		1447	or next;
		1448	$neigh->load;
		1449	}
		1450	}
687		1451
688	$map->_set_obs ($data->{obs});	1452	sub find_sync {
		1453	my ($path, $origin) = @_;
		1454
		1455	cf::sync_job { find $path, $origin }
		1456	}
		1457
		1458	sub do_load_sync {
		1459	my ($map) = @_;
		1460
		1461	cf::sync_job { $map->load };
		1462	}
		1463
		1464	our %MAP_PREFETCH;
		1465	our $MAP_PREFETCHER = Coro::async {
		1466	while () {
		1467	while (%MAP_PREFETCH) {
		1468	my $key = each %MAP_PREFETCH
		1469	or next;
		1470	my $path = delete $MAP_PREFETCH{$key};
		1471
		1472	my $map = find $path
		1473	or next;
		1474	$map->load;
		1475	}
		1476	Coro::schedule;
		1477	}
689	};	1478	};
690		1479
691	attach_to_maps prio => -10000, package => cf::mapsupport::;	1480	sub find_async {
		1481	my ($path, $origin) = @_;
692		1482
693	#############################################################################	1483	$path = new cf::path $path, $origin && $origin->path;
694	# load/save perl data associated with player->ob objects	1484	my $key = $path->as_string;
695		1485
696	sub all_objects(@) {	1486	if (my $map = $cf::MAP{$key}) {
697	@_, map all_objects ($_->inv), @_	1487	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
698	}
699
700	attach_to_players
701	on_load => sub {
702	my ($pl, $path) = @_;
703
704	for my $o (all_objects $pl->ob) {
705	if (my $value = $o->get_ob_key_value ("_perl_data")) {
706	$o->set_ob_key_value ("_perl_data");
707
708	%$o = %{ Storable::thaw pack "H*", $value };
709	}
710	}
711	},	1488	}
712	;
713		1489
714	#############################################################################	1490	$MAP_PREFETCH{$key} = $path;
715	# core extensions - in perl	1491	$MAP_PREFETCHER->ready;
716		1492
717	=item cf::player::exists $login	1493	()
718
719	Returns true when the given account exists.
720
721	=cut
722
723	sub cf::player::exists($) {
724	cf::player::find $_[0]
725	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
726	}	1494	}
727		1495
		1496	sub save {
		1497	my ($self) = @_;
		1498
		1499	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1500
		1501	$self->{last_save} = $cf::RUNTIME;
		1502
		1503	return unless $self->dirty;
		1504
		1505	my $save = $self->{path}->save_path; utf8::encode $save;
		1506	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1507
		1508	$self->{load_path} = $save;
		1509
		1510	return if $self->{deny_save};
		1511
		1512	local $self->{last_access} = $self->last_access;#d#
		1513
		1514	cf::async {
		1515	$_->contr->save for $self->players;
		1516	};
		1517
		1518	if ($uniq) {
		1519	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1520	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1521	} else {
		1522	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1523	}
		1524	}
		1525
		1526	sub swap_out {
		1527	my ($self) = @_;
		1528
		1529	# save first because save cedes
		1530	$self->save;
		1531
		1532	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1533
		1534	return if $self->players;
		1535	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1536	return if $self->{deny_save};
		1537
		1538	$self->clear;
		1539	$self->in_memory (cf::MAP_SWAPPED);
		1540	}
		1541
		1542	sub reset_at {
		1543	my ($self) = @_;
		1544
		1545	# TODO: safety, remove and allow resettable per-player maps
		1546	return 1e99 if $self->{path}{user_rel};
		1547	return 1e99 if $self->{deny_reset};
		1548
		1549	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1550	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1551
		1552	$time + $to
		1553	}
		1554
		1555	sub should_reset {
		1556	my ($self) = @_;
		1557
		1558	$self->reset_at <= $cf::RUNTIME
		1559	}
		1560
		1561	sub rename {
		1562	my ($self, $new_path) = @_;
		1563
		1564	$self->{path}->unlink_save;
		1565
		1566	delete $cf::MAP{$self->path};
		1567	$self->{path} = new cf::path $new_path;
		1568	$self->path ($self->{path}->as_string);
		1569	$cf::MAP{$self->path} = $self;
		1570
		1571	$self->save;
		1572	}
		1573
		1574	sub reset {
		1575	my ($self) = @_;
		1576
		1577	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1578
		1579	return if $self->players;
		1580	return if $self->{path}{user_rel};#d#
		1581
		1582	warn "resetting map ", $self->path;#d#
		1583
		1584	delete $cf::MAP{$self->path};
		1585
		1586	$_->clear_links_to ($self) for values %cf::MAP;
		1587
		1588	$self->{path}->unlink_save;
		1589	$self->destroy;
		1590	}
		1591
		1592	my $nuke_counter = "aaaa";
		1593
		1594	sub nuke {
		1595	my ($self) = @_;
		1596
		1597	$self->{deny_save} = 1;
		1598	$self->reset_timeout (1);
		1599	$self->rename ("{nuke}/" . ($nuke_counter++));
		1600	$self->reset; # polite request, might not happen
		1601	}
		1602
		1603	sub customise_for {
		1604	my ($map, $ob) = @_;
		1605
		1606	if ($map->per_player) {
		1607	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1608	}
		1609
		1610	$map
		1611	}
		1612
		1613	=item cf::map::unique_maps
		1614
		1615	Returns an arrayref of cf::path's of all shared maps that have
		1616	instantiated unique items. May block.
		1617
		1618	=cut
		1619
		1620	sub unique_maps() {
		1621	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1622	or return;
		1623
		1624	my @paths;
		1625
		1626	for (@$files) {
		1627	utf8::decode $_;
		1628	next if /\.pst$/;
		1629	next unless /^$PATH_SEP/o;
		1630
		1631	push @paths, new cf::path $_;
		1632	}
		1633
		1634	\@paths
		1635	}
		1636
		1637	package cf;
		1638
		1639	=back
		1640
		1641	=head3 cf::object
		1642
		1643	=cut
		1644
		1645	package cf::object;
		1646
		1647	=over 4
		1648
		1649	=item $ob->inv_recursive
		1650
		1651	Returns the inventory of the object _and_ their inventories, recursively.
		1652
		1653	=cut
		1654
		1655	sub inv_recursive_;
		1656	sub inv_recursive_ {
		1657	map { $_, inv_recursive_ $_->inv } @_
		1658	}
		1659
		1660	sub inv_recursive {
		1661	inv_recursive_ inv $_[0]
		1662	}
		1663
		1664	package cf;
		1665
		1666	=back
		1667
		1668	=head3 cf::object::player
		1669
		1670	=over 4
		1671
728	=item $player->reply ($npc, $msg[, $flags])	1672	=item $player_object->reply ($npc, $msg[, $flags])
729		1673
730	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1674	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
731	can be C<undef>. Does the right thing when the player is currently in a	1675	can be C<undef>. Does the right thing when the player is currently in a
732	dialogue with the given NPC character.	1676	dialogue with the given NPC character.
733		1677
734	=cut	1678	=cut
735		1679
736	# rough implementation of a future "reply" method that works	1680	# rough implementation of a future "reply" method that works
737	# with dialog boxes.	1681	# with dialog boxes.
		1682	#TODO: the first argument must go, split into a $npc->reply_to ( method
738	sub cf::object::player::reply($$$;$) {	1683	sub cf::object::player::reply($$$;$) {
739	my ($self, $npc, $msg, $flags) = @_;	1684	my ($self, $npc, $msg, $flags) = @_;
740		1685
741	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1686	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
742		1687
…		…
746	$msg = $npc->name . " says: $msg" if $npc;	1691	$msg = $npc->name . " says: $msg" if $npc;
747	$self->message ($msg, $flags);	1692	$self->message ($msg, $flags);
748	}	1693	}
749	}	1694	}
750		1695
751	=item $player->ext_reply ($msgid, $msgtype, %msg)	1696	=item $player_object->may ("access")
752		1697
753	Sends an ext reply to the player.	1698	Returns wether the given player is authorized to access resource "access"
		1699	(e.g. "command_wizcast").
754		1700
755	=cut	1701	=cut
756		1702
757	sub cf::player::ext_reply($$$%) {	1703	sub cf::object::player::may {
		1704	my ($self, $access) = @_;
		1705
		1706	$self->flag (cf::FLAG_WIZ) ||
		1707	(ref $cf::CFG{"may_$access"}
		1708	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1709	: $cf::CFG{"may_$access"})
		1710	}
		1711
		1712	=item $player_object->enter_link
		1713
		1714	Freezes the player and moves him/her to a special map (C<{link}>).
		1715
		1716	The player should be reaosnably safe there for short amounts of time. You
		1717	I<MUST> call C<leave_link> as soon as possible, though.
		1718
		1719	=item $player_object->leave_link ($map, $x, $y)
		1720
		1721	Moves the player out of the specila link map onto the given map. If the
		1722	map is not valid (or omitted), the player will be moved back to the
		1723	location he/she was before the call to C<enter_link>, or, if that fails,
		1724	to the emergency map position.
		1725
		1726	Might block.
		1727
		1728	=cut
		1729
		1730	sub cf::object::player::enter_link {
		1731	my ($self) = @_;
		1732
		1733	$self->deactivate_recursive;
		1734
		1735	return if $self->map == $LINK_MAP;
		1736
		1737	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1738	if $self->map;
		1739
		1740	$self->enter_map ($LINK_MAP, 20, 20);
		1741	}
		1742
		1743	sub cf::object::player::leave_link {
		1744	my ($self, $map, $x, $y) = @_;
		1745
		1746	my $link_pos = delete $self->{_link_pos};
		1747
		1748	unless ($map) {
		1749	# restore original map position
		1750	($map, $x, $y) = @{ $link_pos || [] };
		1751	$map = cf::map::find $map;
		1752
		1753	unless ($map) {
		1754	($map, $x, $y) = @$EMERGENCY_POSITION;
		1755	$map = cf::map::find $map
		1756	or die "FATAL: cannot load emergency map\n";
		1757	}
		1758	}
		1759
		1760	($x, $y) = (-1, -1)
		1761	unless (defined $x) && (defined $y);
		1762
		1763	# use -1 or undef as default coordinates, not 0, 0
		1764	($x, $y) = ($map->enter_x, $map->enter_y)
		1765	if $x <=0 && $y <= 0;
		1766
		1767	$map->load;
		1768	$map->load_diag;
		1769
		1770	return unless $self->contr->active;
		1771	$self->activate_recursive;
		1772	$self->enter_map ($map, $x, $y);
		1773	}
		1774
		1775	cf::player->attach (
		1776	on_logout => sub {
		1777	my ($pl) = @_;
		1778
		1779	# abort map switching before logout
		1780	if ($pl->ob->{_link_pos}) {
		1781	cf::sync_job {
		1782	$pl->ob->leave_link
		1783	};
		1784	}
		1785	},
		1786	on_login => sub {
		1787	my ($pl) = @_;
		1788
		1789	# try to abort aborted map switching on player login :)
		1790	# should happen only on crashes
		1791	if ($pl->ob->{_link_pos}) {
		1792	$pl->ob->enter_link;
		1793	(async {
		1794	# we need this sleep as the login has a concurrent enter_exit running
		1795	# and this sleep increases chances of the player not ending up in scorn
		1796	$pl->ob->reply (undef,
		1797	"There was an internal problem at your last logout, "
		1798	. "the server will try to bring you to your intended destination in a second.",
		1799	cf::NDI_RED);
		1800	Coro::Timer::sleep 1;
		1801	$pl->ob->leave_link;
		1802	})->prio (2);
		1803	}
		1804	},
		1805	);
		1806
		1807	=item $player_object->goto ($path, $x, $y)
		1808
		1809	=cut
		1810
		1811	sub cf::object::player::goto {
		1812	my ($self, $path, $x, $y) = @_;
		1813
		1814	$path = new cf::path $path;
		1815
		1816	$self->enter_link;
		1817
		1818	(async {
		1819	my $map = cf::map::find $path->as_string;
		1820	$map = $map->customise_for ($self) if $map;
		1821
		1822	# warn "entering ", $map->path, " at ($x, $y)\n"
		1823	# if $map;
		1824
		1825	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1826
		1827	$self->leave_link ($map, $x, $y);
		1828	})->prio (1);
		1829	}
		1830
		1831	=item $player_object->enter_exit ($exit_object)
		1832
		1833	=cut
		1834
		1835	sub parse_random_map_params {
		1836	my ($spec) = @_;
		1837
		1838	my $rmp = { # defaults
		1839	xsize => 10,
		1840	ysize => 10,
		1841	};
		1842
		1843	for (split /\n/, $spec) {
		1844	my ($k, $v) = split /\s+/, $_, 2;
		1845
		1846	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1847	}
		1848
		1849	$rmp
		1850	}
		1851
		1852	sub prepare_random_map {
		1853	my ($exit) = @_;
		1854
		1855	# all this does is basically replace the /! path by
		1856	# a new random map path (?random/...) with a seed
		1857	# that depends on the exit object
		1858
		1859	my $rmp = parse_random_map_params $exit->msg;
		1860
		1861	if ($exit->map) {
		1862	$rmp->{region} = $exit->map->region_name;
		1863	$rmp->{origin_map} = $exit->map->path;
		1864	$rmp->{origin_x} = $exit->x;
		1865	$rmp->{origin_y} = $exit->y;
		1866	}
		1867
		1868	$rmp->{random_seed} ||= $exit->random_seed;
		1869
		1870	my $data = cf::to_json $rmp;
		1871	my $md5 = Digest::MD5::md5_hex $data;
		1872
		1873	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1874	aio_write $fh, 0, (length $data), $data, 0;
		1875
		1876	$exit->slaying ("?random/$md5");
		1877	$exit->msg (undef);
		1878	}
		1879	}
		1880
		1881	sub cf::object::player::enter_exit {
758	my ($self, $id, %msg) = @_;	1882	my ($self, $exit) = @_;
759		1883
760	$msg{msgid} = $id;	1884	return unless $self->type == cf::PLAYER;
761		1885
762	$self->send ("ext " . to_json \%msg);	1886	$self->enter_link;
763	}
764		1887
765	#############################################################################	1888	(async {
766	# map scripting support	1889	$self->deactivate_recursive; # just to be sure
		1890	unless (eval {
		1891	prepare_random_map $exit
		1892	if $exit->slaying eq "/!";
		1893
		1894	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1895	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1896
		1897	1;
		1898	}) {
		1899	$self->message ("Something went wrong deep within the crossfire server. "
		1900	. "I'll try to bring you back to the map you were before. "
		1901	. "Please report this to the dungeon master!",
		1902	cf::NDI_UNIQUE | cf::NDI_RED);
		1903
		1904	warn "ERROR in enter_exit: $@";
		1905	$self->leave_link;
		1906	}
		1907	})->prio (1);
		1908	}
		1909
		1910	=head3 cf::client
		1911
		1912	=over 4
		1913
		1914	=item $client->send_drawinfo ($text, $flags)
		1915
		1916	Sends a drawinfo packet to the client. Circumvents output buffering so
		1917	should not be used under normal circumstances.
		1918
		1919	=cut
		1920
		1921	sub cf::client::send_drawinfo {
		1922	my ($self, $text, $flags) = @_;
		1923
		1924	utf8::encode $text;
		1925	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1926	}
		1927
		1928
		1929	=item $success = $client->query ($flags, "text", \&cb)
		1930
		1931	Queues a query to the client, calling the given callback with
		1932	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1933	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1934
		1935	Queries can fail, so check the return code. Or don't, as queries will become
		1936	reliable at some point in the future.
		1937
		1938	=cut
		1939
		1940	sub cf::client::query {
		1941	my ($self, $flags, $text, $cb) = @_;
		1942
		1943	return unless $self->state == ST_PLAYING
		1944	|| $self->state == ST_SETUP
		1945	|| $self->state == ST_CUSTOM;
		1946
		1947	$self->state (ST_CUSTOM);
		1948
		1949	utf8::encode $text;
		1950	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1951
		1952	$self->send_packet ($self->{query_queue}[0][0])
		1953	if @{ $self->{query_queue} } == 1;
		1954	}
		1955
		1956	cf::client->attach (
		1957	on_reply => sub {
		1958	my ($ns, $msg) = @_;
		1959
		1960	# this weird shuffling is so that direct followup queries
		1961	# get handled first
		1962	my $queue = delete $ns->{query_queue}
		1963	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1964
		1965	(shift @$queue)->[1]->($msg);
		1966
		1967	push @{ $ns->{query_queue} }, @$queue;
		1968
		1969	if (@{ $ns->{query_queue} } == @$queue) {
		1970	if (@$queue) {
		1971	$ns->send_packet ($ns->{query_queue}[0][0]);
		1972	} else {
		1973	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1974	}
		1975	}
		1976	},
		1977	);
		1978
		1979	=item $client->async (\&cb)
		1980
		1981	Create a new coroutine, running the specified callback. The coroutine will
		1982	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1983	or loss of connection).
		1984
		1985	=cut
		1986
		1987	sub cf::client::async {
		1988	my ($self, $cb) = @_;
		1989
		1990	my $coro = &Coro::async ($cb);
		1991
		1992	$coro->on_destroy (sub {
		1993	delete $self->{_coro}{$coro+0};
		1994	});
		1995
		1996	$self->{_coro}{$coro+0} = $coro;
		1997
		1998	$coro
		1999	}
		2000
		2001	cf::client->attach (
		2002	on_destroy => sub {
		2003	my ($ns) = @_;
		2004
		2005	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2006	},
		2007	);
		2008
		2009	=back
		2010
		2011
		2012	=head2 SAFE SCRIPTING
		2013
		2014	Functions that provide a safe environment to compile and execute
		2015	snippets of perl code without them endangering the safety of the server
		2016	itself. Looping constructs, I/O operators and other built-in functionality
		2017	is not available in the safe scripting environment, and the number of
		2018	functions and methods that can be called is greatly reduced.
		2019
		2020	=cut
767		2021
768	our $safe = new Safe "safe";	2022	our $safe = new Safe "safe";
769	our $safe_hole = new Safe::Hole;	2023	our $safe_hole = new Safe::Hole;
770		2024
771	$SIG{FPE} = 'IGNORE';	2025	$SIG{FPE} = 'IGNORE';
772		2026
773	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2027	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
774		2028
775	# here we export the classes and methods available to script code	2029	# here we export the classes and methods available to script code
776		2030
		2031	=pod
		2032
		2033	The following fucntions and emthods are available within a safe environment:
		2034
		2035	cf::object contr pay_amount pay_player map
		2036	cf::object::player player
		2037	cf::player peaceful
		2038	cf::map trigger
		2039
		2040	=cut
		2041
777	for (	2042	for (
778	["cf::object" => qw(contr pay_amount pay_player)],	2043	["cf::object" => qw(contr pay_amount pay_player map)],
779	["cf::object::player" => qw(player)],	2044	["cf::object::player" => qw(player)],
780	["cf::player" => qw(peaceful)],	2045	["cf::player" => qw(peaceful)],
		2046	["cf::map" => qw(trigger)],
781	) {	2047	) {
782	no strict 'refs';	2048	no strict 'refs';
783	my ($pkg, @funs) = @$_;	2049	my ($pkg, @funs) = @$_;
784	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2050	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
785	for @funs;	2051	for @funs;
786	}	2052	}
		2053
		2054	=over 4
		2055
		2056	=item @retval = safe_eval $code, [var => value, ...]
		2057
		2058	Compiled and executes the given perl code snippet. additional var/value
		2059	pairs result in temporary local (my) scalar variables of the given name
		2060	that are available in the code snippet. Example:
		2061
		2062	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2063
		2064	=cut
787		2065
788	sub safe_eval($;@) {	2066	sub safe_eval($;@) {
789	my ($code, %vars) = @_;	2067	my ($code, %vars) = @_;
790		2068
791	my $qcode = $code;	2069	my $qcode = $code;
…		…
814	}	2092	}
815		2093
816	wantarray ? @res : $res[0]	2094	wantarray ? @res : $res[0]
817	}	2095	}
818		2096
		2097	=item cf::register_script_function $function => $cb
		2098
		2099	Register a function that can be called from within map/npc scripts. The
		2100	function should be reasonably secure and should be put into a package name
		2101	like the extension.
		2102
		2103	Example: register a function that gets called whenever a map script calls
		2104	C<rent::overview>, as used by the C<rent> extension.
		2105
		2106	cf::register_script_function "rent::overview" => sub {
		2107	...
		2108	};
		2109
		2110	=cut
		2111
819	sub register_script_function {	2112	sub register_script_function {
820	my ($fun, $cb) = @_;	2113	my ($fun, $cb) = @_;
821		2114
822	no strict 'refs';	2115	no strict 'refs';
823	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2116	*{"safe::$fun"} = $safe_hole->wrap ($cb);
824	}	2117	}
825		2118
		2119	=back
		2120
		2121	=cut
		2122
		2123	#############################################################################
		2124
		2125	=head2 EXTENSION DATABASE SUPPORT
		2126
		2127	Crossfire maintains a very simple database for extension use. It can
		2128	currently store anything that can be serialised using Storable, which
		2129	excludes objects.
		2130
		2131	The parameter C<$family> should best start with the name of the extension
		2132	using it, it should be unique.
		2133
		2134	=over 4
		2135
		2136	=item $hashref = cf::db_get $family
		2137
		2138	Return a hashref for use by the extension C<$family>, which can be
		2139	modified. After modifications, you have to call C<cf::db_dirty> or
		2140	C<cf::db_sync>.
		2141
		2142	=item $value = cf::db_get $family => $key
		2143
		2144	Returns a single value from the database
		2145
		2146	=item cf::db_put $family => $hashref
		2147
		2148	Stores the given family hashref into the database. Updates are delayed, if
		2149	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2150
		2151	=item cf::db_put $family => $key => $value
		2152
		2153	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2154	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2155
		2156	=item cf::db_dirty
		2157
		2158	Marks the database as dirty, to be updated at a later time.
		2159
		2160	=item cf::db_sync
		2161
		2162	Immediately write the database to disk I<if it is dirty>.
		2163
		2164	=cut
		2165
		2166	our $DB;
		2167
		2168	{
		2169	my $path = cf::localdir . "/database.pst";
		2170
		2171	sub db_load() {
		2172	$DB = stat $path ? Storable::retrieve $path : { };
		2173	}
		2174
		2175	my $pid;
		2176
		2177	sub db_save() {
		2178	waitpid $pid, 0 if $pid;
		2179	if (0 == ($pid = fork)) {
		2180	$DB->{_meta}{version} = 1;
		2181	Storable::nstore $DB, "$path~";
		2182	rename "$path~", $path;
		2183	cf::_exit 0 if defined $pid;
		2184	}
		2185	}
		2186
		2187	my $dirty;
		2188
		2189	sub db_sync() {
		2190	db_save if $dirty;
		2191	undef $dirty;
		2192	}
		2193
		2194	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2195	db_sync;
		2196	});
		2197
		2198	sub db_dirty() {
		2199	$dirty = 1;
		2200	$idle->start;
		2201	}
		2202
		2203	sub db_get($;$) {
		2204	@_ >= 2
		2205	? $DB->{$_[0]}{$_[1]}
		2206	: ($DB->{$_[0]} ||= { })
		2207	}
		2208
		2209	sub db_put($$;$) {
		2210	if (@_ >= 3) {
		2211	$DB->{$_[0]}{$_[1]} = $_[2];
		2212	} else {
		2213	$DB->{$_[0]} = $_[1];
		2214	}
		2215	db_dirty;
		2216	}
		2217
		2218	cf::global->attach (
		2219	prio => 10000,
		2220	on_cleanup => sub {
		2221	db_sync;
		2222	},
		2223	);
		2224	}
		2225
826	#############################################################################	2226	#############################################################################
827	# the server's main()	2227	# the server's main()
828		2228
		2229	sub cfg_load {
		2230	open my $fh, "<:utf8", cf::confdir . "/config"
		2231	or return;
		2232
		2233	local $/;
		2234	*CFG = YAML::Syck::Load <$fh>;
		2235
		2236	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2237
		2238	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2239	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2240
		2241	if (exists $CFG{mlockall}) {
		2242	eval {
		2243	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2244	and die "WARNING: m(un)lockall failed: $!\n";
		2245	};
		2246	warn $@ if $@;
		2247	}
		2248	}
		2249
829	sub main {	2250	sub main {
		2251	# we must not ever block the main coroutine
		2252	local $Coro::idle = sub {
		2253	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2254	async { Event::one_event };
		2255	};
		2256
		2257	cfg_load;
		2258	db_load;
		2259	load_extensions;
830	Event::loop;	2260	Event::loop;
831	}	2261	}
832		2262
833	#############################################################################	2263	#############################################################################
834	# initialisation	2264	# initialisation and cleanup
835		2265
836	register "<global>", __PACKAGE__;	2266	# install some emergency cleanup handlers
		2267	BEGIN {
		2268	for my $signal (qw(INT HUP TERM)) {
		2269	Event->signal (
		2270	data => WF_AUTOCANCEL,
		2271	signal => $signal,
		2272	cb => sub {
		2273	cf::cleanup "SIG$signal";
		2274	},
		2275	);
		2276	}
		2277	}
		2278
		2279	sub emergency_save() {
		2280	my $freeze_guard = cf::freeze_mainloop;
		2281
		2282	warn "enter emergency perl save\n";
		2283
		2284	cf::sync_job {
		2285	# use a peculiar iteration method to avoid tripping on perl
		2286	# refcount bugs in for. also avoids problems with players
		2287	# and maps saved/Destroyed asynchronously.
		2288	warn "begin emergency player save\n";
		2289	for my $login (keys %cf::PLAYER) {
		2290	my $pl = $cf::PLAYER{$login} or next;
		2291	$pl->valid or next;
		2292	$pl->save;
		2293	}
		2294	warn "end emergency player save\n";
		2295
		2296	warn "begin emergency map save\n";
		2297	for my $path (keys %cf::MAP) {
		2298	my $map = $cf::MAP{$path} or next;
		2299	$map->valid or next;
		2300	$map->save;
		2301	}
		2302	warn "end emergency map save\n";
		2303	};
		2304
		2305	warn "leave emergency perl save\n";
		2306	}
		2307
		2308	sub reload() {
		2309	# can/must only be called in main
		2310	if ($Coro::current != $Coro::main) {
		2311	warn "can only reload from main coroutine\n";
		2312	return;
		2313	}
		2314
		2315	warn "reloading...";
		2316
		2317	warn "freezing server";
		2318	my $guard = freeze_mainloop;
		2319	cf::emergency_save;
		2320
		2321	warn "sync database to disk";
		2322	cf::db_sync;
		2323	IO::AIO::flush;
		2324
		2325	eval {
		2326	# if anything goes wrong in here, we should simply crash as we already saved
		2327
		2328	warn "cancel all watchers";
		2329	for (Event::all_watchers) {
		2330	$_->cancel if $_->data & WF_AUTOCANCEL;
		2331	}
		2332
		2333	warn "cancel all extension coros";
		2334	$_->cancel for values %EXT_CORO;
		2335	%EXT_CORO = ();
		2336
		2337	warn "remove commands";
		2338	%COMMAND = ();
		2339
		2340	warn "remove ext commands";
		2341	%EXTCMD = ();
		2342
		2343	warn "unload/nuke all extensions";
		2344	for my $pkg (@EXTS) {
		2345	warn "... unloading $pkg";
		2346
		2347	if (my $cb = $pkg->can ("unload")) {
		2348	eval {
		2349	$cb->($pkg);
		2350	1
		2351	} or warn "$pkg unloaded, but with errors: $@";
		2352	}
		2353
		2354	warn "... nuking $pkg";
		2355	Symbol::delete_package $pkg;
		2356	}
		2357
		2358	warn "unload all perl modules loaded from $LIBDIR";
		2359	while (my ($k, $v) = each %INC) {
		2360	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2361
		2362	warn "removing <$k>";
		2363	delete $INC{$k};
		2364
		2365	$k =~ s/\.pm$//;
		2366	$k =~ s/\//::/g;
		2367
		2368	if (my $cb = $k->can ("unload_module")) {
		2369	$cb->();
		2370	}
		2371
		2372	Symbol::delete_package $k;
		2373	}
		2374
		2375	warn "get rid of safe::, as good as possible";
		2376	Symbol::delete_package "safe::$_"
		2377	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2378
		2379	warn "unload cf.pm \"a bit\"";
		2380	delete $INC{"cf.pm"};
		2381
		2382	# don't, removes xs symbols, too,
		2383	# and global variables created in xs
		2384	#Symbol::delete_package __PACKAGE__;
		2385
		2386	warn "reloading cf.pm";
		2387	require cf;
		2388	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2389
		2390	warn "load config and database again";
		2391	cf::cfg_load;
		2392	cf::db_load;
		2393
		2394	warn "load extensions";
		2395	cf::load_extensions;
		2396
		2397	warn "reattach attachments to objects/players";
		2398	_global_reattach;
		2399	warn "reattach attachments to maps";
		2400	reattach $_ for values %MAP;
		2401	};
		2402
		2403	if ($@) {
		2404	warn $@;
		2405	warn "error while reloading, exiting.";
		2406	exit 1;
		2407	}
		2408
		2409	warn "reloaded";
		2410	};
		2411
		2412	#############################################################################
		2413
		2414	unless ($LINK_MAP) {
		2415	$LINK_MAP = cf::map::new;
		2416
		2417	$LINK_MAP->width (41);
		2418	$LINK_MAP->height (41);
		2419	$LINK_MAP->alloc;
		2420	$LINK_MAP->path ("{link}");
		2421	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2422	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2423
		2424	# dirty hack because... archetypes are not yet loaded
		2425	Event->timer (
		2426	after => 10,
		2427	cb => sub {
		2428	$_[0]->w->cancel;
		2429
		2430	# provide some exits "home"
		2431	my $exit = cf::object::new "exit";
		2432
		2433	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2434	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2435	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2436
		2437	$LINK_MAP->insert ($exit->clone, 19, 19);
		2438	$LINK_MAP->insert ($exit->clone, 19, 20);
		2439	$LINK_MAP->insert ($exit->clone, 19, 21);
		2440	$LINK_MAP->insert ($exit->clone, 20, 19);
		2441	$LINK_MAP->insert ($exit->clone, 20, 21);
		2442	$LINK_MAP->insert ($exit->clone, 21, 19);
		2443	$LINK_MAP->insert ($exit->clone, 21, 20);
		2444	$LINK_MAP->insert ($exit->clone, 21, 21);
		2445
		2446	$exit->destroy;
		2447	});
		2448
		2449	$LINK_MAP->{deny_save} = 1;
		2450	$LINK_MAP->{deny_reset} = 1;
		2451
		2452	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2453	}
		2454
		2455	register_command "reload" => sub {
		2456	my ($who, $arg) = @_;
		2457
		2458	if ($who->flag (FLAG_WIZ)) {
		2459	$who->message ("start of reload.");
		2460	reload;
		2461	$who->message ("end of reload.");
		2462	}
		2463	};
837		2464
838	unshift @INC, $LIBDIR;	2465	unshift @INC, $LIBDIR;
839		2466
840	load_extensions;
841
842	$TICK_WATCHER = Event->timer (	2467	$TICK_WATCHER = Event->timer (
		2468	reentrant => 0,
843	prio => 1,	2469	prio => 0,
844	at => $NEXT_TICK || 1,	2470	at => $NEXT_TICK || $TICK,
		2471	data => WF_AUTOCANCEL,
845	cb => sub {	2472	cb => sub {
		2473	$NOW = Event::time;
		2474
846	cf::server_tick; # one server iteration	2475	cf::server_tick; # one server iteration
847		2476	$RUNTIME += $TICK;
848	my $NOW = Event::time;
849	$NEXT_TICK += $TICK;	2477	$NEXT_TICK += $TICK;
850		2478
		2479	$WAIT_FOR_TICK->broadcast;
		2480	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2481
851	# if we are delayed by four ticks, skip them all	2482	# if we are delayed by four ticks or more, skip them all
852	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2483	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
853		2484
854	$TICK_WATCHER->at ($NEXT_TICK);	2485	$TICK_WATCHER->at ($NEXT_TICK);
855	$TICK_WATCHER->start;	2486	$TICK_WATCHER->start;
856	},	2487	},
857	);	2488	);
858		2489
859	_reload_2;	2490	IO::AIO::max_poll_time $TICK * 0.2;
		2491
		2492	Event->io (
		2493	fd => IO::AIO::poll_fileno,
		2494	poll => 'r',
		2495	prio => 5,
		2496	data => WF_AUTOCANCEL,
		2497	cb => \&IO::AIO::poll_cb,
		2498	);
		2499
		2500	Event->timer (
		2501	data => WF_AUTOCANCEL,
		2502	after => 0,
		2503	interval => 10,
		2504	cb => sub {
		2505	(Coro::unblock_sub {
		2506	write_runtime
		2507	or warn "ERROR: unable to write runtime file: $!";
		2508	})->();
		2509	},
		2510	);
		2511
		2512	END { cf::emergency_save }
860		2513
861	1	2514	1
862		2515

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