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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.173 by root, Sun Jan 14 18:00:34 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;
10	use IO::AIO ();	23	use IO::AIO 2.32 ();
11	use YAML::Syck ();	24	use YAML::Syck ();
12	use Time::HiRes;	25	use Time::HiRes;
13	use Event;	26
14	$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
		28
		29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
18		33
19	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		35
21	_init_vars;
22
23	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
24	our @EVENT;	44	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
26		46
27	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
28	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
29	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
30		53
31	our %CFG;	54	our %CFG;
32		55
33	our $uptime;#d#	56	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	57	our $RUNTIME;
35	$UPTIME ||= $uptime;#d#	58
36	$UPTIME ||= time;	59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
37		87
38	#############################################################################	88	#############################################################################
39		89
40	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
41		91
42	=over 4	92	=over 4
43		93
44	=item $cf::UPTIME	94	=item $cf::UPTIME
45		95
46	The timestamp of the server start (so not actually an uptime).	96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
47		102
48	=item $cf::LIBDIR	103	=item $cf::LIBDIR
49		104
50	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
52		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
53	=item $cf::TICK	112	=item $cf::TICK
54		113
55	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
56		115
57	=item %cf::CFG	116	=item %cf::CFG
58		117
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	from wherever your confdir points to.	119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
61		127
62	=back	128	=back
63		129
64	=cut	130	=cut
65		131
66	BEGIN {	132	BEGIN {
67	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
69	$msg .= "\n"	137	$msg .= "\n"
70	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
71		139
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
74	};	141	};
75	}	142	}
76		143
		144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		150
79	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	152	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
82	no strict 'refs';	160	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	162	}
85		163
86	$Event::DIED = sub {	164	$Event::DIED = sub {
87	warn "error in event callback: @_";	165	warn "error in event callback: @_";
88	};	166	};
89		167
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93	my %command;
94	my %extcmd;
95
96	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
97		169
98	=over 4	170	=over 4
99		171
		172	=item dumpval $ref
		173
100	=cut	174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
101		194
102	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
103		196
104	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
105		198
…		…
121	sub to_json($) {	214	sub to_json($) {
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
123	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
124	}	217	}
125		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
		368	}
		369
126	=back	370	=back
127		371
128	=cut	372	=cut
129		373
130	#############################################################################	374	#############################################################################
131		375
132	=head2 EVENTS AND OBJECT ATTACHMENTS	376	=head2 ATTACHABLE OBJECTS
		377
		378	Many objects in crossfire are so-called attachable objects. That means you can
		379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
		381
		382	In the following description, CLASS can be any of C<global>, C<object>
		383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
133		385
134	=over 4	386	=over 4
135		387
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	388	=item $attachable->attach ($attachment, key => $value...)
149		389
150	=item $map->detach ($attachment)	390	=item $attachable->detach ($attachment)
151		391
152	Attach/detach a pre-registered attachment to a map.	392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
153		394
154	=item $bool = $object->attached ($name)	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
155		397
156	=item $bool = $player->attached ($name)	398	$obj->attach (minesweeper => width => 10, height => 10);
157		399
158	=item $bool = $map->attached ($name)	400	=item $bool = $attachable->attached ($name)
159		401
160	Checks wether the named attachment is currently attached to the object.	402	Checks wether the named attachment is currently attached to the object.
161		403
162	=item cf::attach_global ...	404	=item cf::CLASS->attach ...
163		405
164	Attach handlers for global events.	406	=item cf::CLASS->detach ...
165		407
166	This and all following C<attach_*>-functions expect any number of the	408	Define an anonymous attachment and attach it to all objects of the given
167	following handler/hook descriptions:	409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($pl) = @_;
		418	...
		419	},
		420	);
		421
		422	Example, attach to the jeweler skill:
		423
		424	cf::object->attach (
		425	type => cf::SKILL,
		426	subtype => cf::SK_JEWELER,
		427	on_use_skill => sub {
		428	my ($sk, $ob, $part, $dir, $msg) = @_;
		429	...
		430	},
		431	);
		432
		433	=item cf::CLASS::attachment $name, ...
		434
		435	Register an attachment by C<$name> through which attachable objects of the
		436	given CLASS can refer to this attachment.
		437
		438	Some classes such as crossfire maps and objects can specify attachments
		439	that are attached at load/instantiate time, thus the need for a name.
		440
		441	These calls expect any number of the following handler/hook descriptions:
168		442
169	=over 4	443	=over 4
170		444
171	=item prio => $number	445	=item prio => $number
172		446
…		…
174	by another C<prio> setting). Lower priority handlers get executed	448	by another C<prio> setting). Lower priority handlers get executed
175	earlier. The default priority is C<0>, and many built-in handlers are	449	earlier. The default priority is C<0>, and many built-in handlers are
176	registered at priority C<-1000>, so lower priorities should not be used	450	registered at priority C<-1000>, so lower priorities should not be used
177	unless you know what you are doing.	451	unless you know what you are doing.
178		452
		453	=item type => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
179	=item on_I<event> => \&cb	459	=item on_I<event> => \&cb
180		460
181	Call the given code reference whenever the named event happens (event is	461	Call the given code reference whenever the named event happens (event is
182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	462	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
183	handlers are recognised generally depends on the type of object these	463	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	473	object/class are recognised.
194		474
195	=back	475	=back
196		476
197	=item cf::attach_to_type $object_type, $subtype, ...	477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
198		479
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	480	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	481	on_skill_attack => sub {
201	type.	482	my ($self, $victim) = @_;
202		483	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	484	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	485	}
424	}
425		486
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	487	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		488
452	Just because you have a perl object does not mean that the corresponding	489	Just because you have a perl object does not mean that the corresponding
453	C-level object still exists. If you try to access an object that has no	490	C-level object still exists. If you try to access an object that has no
454	valid C counterpart anymore you get an exception at runtime. This method	491	valid C counterpart anymore you get an exception at runtime. This method
455	can be used to test for existence of the C object part without causing an	492	can be used to test for existence of the C object part without causing an
456	exception.	493	exception.
457		494
		495	=cut
		496
		497	# the following variables are defined in .xs and must not be re-created
		498	our @CB_GLOBAL = (); # registry for all global events
		499	our @CB_ATTACHABLE = (); # registry for all attachables
		500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
		503	our @CB_TYPE = (); # registry for type (cf-object class) based events
		504	our @CB_MAP = ();
		505
		506	my %attachment;
		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
		514	sub _attach_cb($$$$) {
		515	my ($registry, $event, $prio, $cb) = @_;
		516
		517	use sort 'stable';
		518
		519	$cb = [$prio, $cb];
		520
		521	@{$registry->[$event]} = sort
		522	{ $a->[0] cmp $b->[0] }
		523	@{$registry->[$event] || []}, $cb;
		524	}
		525
		526	# hack
		527	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		528
		529	# attach handles attaching event callbacks
		530	# the only thing the caller has to do is pass the correct
		531	# registry (== where the callback attaches to).
		532	sub _attach {
		533	my ($registry, $klass, @arg) = @_;
		534
		535	my $object_type;
		536	my $prio = 0;
		537	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		538
		539	#TODO: get rid of this hack
		540	if ($attachable_klass{$klass}) {
		541	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		542	}
		543
		544	while (@arg) {
		545	my $type = shift @arg;
		546
		547	if ($type eq "prio") {
		548	$prio = shift @arg;
		549
		550	} elsif ($type eq "type") {
		551	$object_type = shift @arg;
		552	$registry = $CB_TYPE[$object_type] ||= [];
		553
		554	} elsif ($type eq "subtype") {
		555	defined $object_type or Carp::croak "subtype specified without type";
		556	my $object_subtype = shift @arg;
		557	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		558
		559	} elsif ($type eq "package") {
		560	my $pkg = shift @arg;
		561
		562	while (my ($name, $id) = each %cb_id) {
		563	if (my $cb = $pkg->can ($name)) {
		564	_attach_cb $registry, $id, $prio, $cb;
		565	}
		566	}
		567
		568	} elsif (exists $cb_id{$type}) {
		569	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		570
		571	} elsif (ref $type) {
		572	warn "attaching objects not supported, ignoring.\n";
		573
		574	} else {
		575	shift @arg;
		576	warn "attach argument '$type' not supported, ignoring.\n";
		577	}
		578	}
		579	}
		580
		581	sub _object_attach {
		582	my ($obj, $name, %arg) = @_;
		583
		584	return if exists $obj->{_attachment}{$name};
		585
		586	if (my $attach = $attachment{$name}) {
		587	my $registry = $obj->registry;
		588
		589	for (@$attach) {
		590	my ($klass, @attach) = @$_;
		591	_attach $registry, $klass, @attach;
		592	}
		593
		594	$obj->{$name} = \%arg;
		595	} else {
		596	warn "object uses attachment '$name' that is not available, postponing.\n";
		597	}
		598
		599	$obj->{_attachment}{$name} = undef;
		600	}
		601
		602	sub cf::attachable::attach {
		603	if (ref $_[0]) {
		604	_object_attach @_;
		605	} else {
		606	_attach shift->_attach_registry, @_;
		607	}
		608	};
		609
		610	# all those should be optimised
		611	sub cf::attachable::detach {
		612	my ($obj, $name) = @_;
		613
		614	if (ref $obj) {
		615	delete $obj->{_attachment}{$name};
		616	reattach ($obj);
		617	} else {
		618	Carp::croak "cannot, currently, detach class attachments";
		619	}
		620	};
		621
		622	sub cf::attachable::attached {
		623	my ($obj, $name) = @_;
		624
		625	exists $obj->{_attachment}{$name}
		626	}
		627
		628	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		629	eval "#line " . __LINE__ . " 'cf.pm'
		630	sub cf::\L$klass\E::_attach_registry {
		631	(\\\@CB_$klass, KLASS_$klass)
		632	}
		633
		634	sub cf::\L$klass\E::attachment {
		635	my \$name = shift;
		636
		637	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		638	}
		639	";
		640	die if $@;
		641	}
		642
		643	our $override;
		644	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		645
		646	sub override {
		647	$override = 1;
		648	@invoke_results = ();
		649	}
		650
		651	sub do_invoke {
		652	my $event = shift;
		653	my $callbacks = shift;
		654
		655	@invoke_results = ();
		656
		657	local $override;
		658
		659	for (@$callbacks) {
		660	eval { &{$_->[1]} };
		661
		662	if ($@) {
		663	warn "$@";
		664	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		665	override;
		666	}
		667
		668	return 1 if $override;
		669	}
		670
		671	0
		672	}
		673
		674	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		675
		676	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		677
		678	Generate an object-specific event with the given arguments.
		679
		680	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		681	removed in future versions), and there is no public API to access override
		682	results (if you must, access C<@cf::invoke_results> directly).
		683
458	=back	684	=back
459		685
460	=cut	686	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		687
466	#############################################################################	688	#############################################################################
467	# object support	689	# object support
468		690
469	sub instantiate {
470	my ($obj, $data) = @_;
471
472	$data = from_json $data;
473
474	for (@$data) {
475	my ($name, $args) = @$_;
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}
480
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	691	sub reattach {
		692	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
484	my $registry = $obj->registry;	697	my $registry = $obj->registry;
485		698
486	@$registry = ();	699	@$registry = ();
487		700
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		702
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	703	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	704	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	705	for (@$attach) {
493	my ($klass, @attach) = @$_;	706	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	707	_attach $registry, $klass, @attach;
495	}	708	}
496	} else {	709	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	710	warn "object uses attachment '$name' that is not available, postponing.\n";
498	}	711	}
499	}	712	}
500	}	713	}
501		714
502	sub object_freezer_save {	715	cf::attachable->attach (
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}
531	}
532
533	sub object_freezer_as_string {
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
562	on_clone => sub {	729	on_clone => sub {
563	my ($src, $dst) = @_;	730	my ($src, $dst) = @_;
564		731
565	@{$dst->registry} = @{$src->registry};	732	@{$dst->registry} = @{$src->registry};
566		733
567	%$dst = %$src;	734	%$dst = %$src;
568		735
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	736	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	737	if exists $src->{_attachment};
571	},	738	},
572	;	739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$rdata) {
		746	warn sprintf "saving %s (%d,%d)\n",
		747	$filename, length $$rdata, scalar @$objs;
		748
		749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		750	chmod SAVE_MODE, $fh;
		751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
		753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
		762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
		769	} else {
		770	warn "FATAL: $filename~: $!\n";
		771	}
		772	} else {
		773	aio_unlink $filename;
		774	aio_unlink "$filename.pst";
		775	}
		776	}
		777	}
		778
		779	sub object_freezer_as_string {
		780	my ($rdata, $objs) = @_;
		781
		782	use Data::Dumper;
		783
		784	$$rdata . Dumper $objs
		785	}
		786
		787	sub object_thawer_load {
		788	my ($filename) = @_;
		789
		790	my ($data, $av);
		791
		792	(aio_load $filename, $data) >= 0
		793	or return;
		794
		795	unless (aio_stat "$filename.pst") {
		796	(aio_load "$filename.pst", $av) >= 0
		797	or return;
		798	$av = eval { (Storable::thaw $av)->{objs} };
		799	}
		800
		801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
		803	return ($data, $av);
		804	}
573		805
574	#############################################################################	806	#############################################################################
575	# old plug-in events	807	# command handling &c
576		808
577	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		810
581	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
582	or return;	812	$name.
583		813
584	&$cb	814	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		815
606	sub register_command {	816	sub register_command {
607	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
608		818
609	my $caller = caller;	819	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
611		821
612	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
615		833
616	sub register_extcmd {	834	sub register_extcmd {
617	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
618		836
619	my $caller = caller;	837	$EXTCMD{$name} = $cb;
620	#warn "registering extcmd '$name' to '$caller'";
621
622	$extcmd{$name} = [$cb, $caller];
623	}	838	}
624		839
625	sub register {	840	cf::player->attach (
626	my ($base, $pkg) = @_;	841	on_command => sub {
		842	my ($pl, $name, $params) = @_;
627		843
628	#TODO	844	my $cb = $COMMAND{$name}
629	}	845	or return;
		846
		847	for my $cmd (@$cb) {
		848	$cmd->[1]->($pl->ob, $params);
		849	}
		850
		851	cf::override;
		852	},
		853	on_extcmd => sub {
		854	my ($pl, $buf) = @_;
		855
		856	my $msg = eval { from_json $buf };
		857
		858	if (ref $msg) {
		859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		860	if (my %reply = $cb->($pl, $msg)) {
		861	$pl->ext_reply ($msg->{msgid}, %reply);
		862	}
		863	}
		864	} else {
		865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		866	}
		867
		868	cf::override;
		869	},
		870	);
630		871
631	sub load_extension {	872	sub load_extension {
632	my ($path) = @_;	873	my ($path) = @_;
633		874
634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
635	my $base = $1;	876	my $base = $1;
636	my $pkg = $1;	877	my $pkg = $1;
637	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
638	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
639		880
640	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
641		882
642	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
643	or die "$path: $!";	884	or die "$path: $!";
644		885
645	my $source =	886	my $source =
646	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
647	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
648	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
649	. "\n};\n1";	890	. "\n};\n1";
650		891
651	eval $source	892	unless (eval $source) {
652	or die $@ ? "$path: $@\n"	893	my $msg = $@ ? "$path: $@\n"
653	: "extension disabled.\n";	894	: "extension disabled.\n";
654		895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
655	push @exts, $pkg;	896	warn $@;
656	$ext_pkg{$base} = $pkg;	897	warn "mandatory extension failed to load, exiting.\n";
657		898	exit 1;
658	# no strict 'refs';	899	}
659	# @{"$pkg\::ISA"} = ext::;	900	die $@;
660
661	register $base, $pkg;
662	}
663
664	sub unload_extension {
665	my ($pkg) = @_;
666
667	warn "removing extension $pkg\n";
668
669	# remove hooks
670	#TODO
671	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};
673	# }	901	}
674		902
675	# remove commands	903	push @EXTS, $pkg;
676	for my $name (keys %command) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
678
679	if (@cb) {
680	$command{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};
685	}
686	}
687
688	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
690	delete $extcmd{$name};
691	}
692
693	if (my $cb = $pkg->can ("unload")) {
694	eval {
695	$cb->($pkg);
696	1
697	} or warn "$pkg unloaded, but with errors: $@";
698	}
699
700	Symbol::delete_package $pkg;
701	}	904	}
702		905
703	sub load_extensions {	906	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;	908	next unless -r $ext;
708	eval {	909	eval {
709	load_extension $ext;	910	load_extension $ext;
710	1	911	1
711	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
712	}	913	}
713	}	914	}
714		915
715	#############################################################################	916	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718		917
719	attach_to_players	918	=head2 CORE EXTENSIONS
720	on_extcmd => sub {
721	my ($pl, $buf) = @_;
722		919
723	my $msg = eval { from_json $buf };	920	Functions and methods that extend core crossfire objects.
724		921
725	if (ref $msg) {	922	=cut
726	if (my $cb = $extcmd{$msg->{msgtype}}) {	923
727	if (my %reply = $cb->[0]->($pl, $msg)) {	924	package cf::player;
728	$pl->ext_reply ($msg->{msgid}, %reply);	925
729	}	926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
		959	my ($login) = @_;
		960
		961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat $login }
		963	}
		964
		965	sub find($) {
		966	return $cf::PLAYER{$_[0]} || do {
		967	my $login = $_[0];
		968
		969	my $guard = cf::lock_acquire "user_find:$login";
		970
		971	$cf::PLAYER{$_[0]} || do {
		972	my $pl = load_pl path $login
		973	or return;
		974	$cf::PLAYER{$login} = $pl
730	}	975	}
731	} else {
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
733	}
734
735	cf::override;
736	},	976	}
737	;	977	}
738		978
739	#############################################################################	979	sub save($) {
740	# load/save/clean perl data associated with a map	980	my ($pl) = @_;
741		981
742	*cf::mapsupport::on_clean = sub {	982	return if $pl->{deny_save};
		983
		984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string,
		1119	fallback => 1;
		1120
		1121	our $MAX_RESET = 3600;
		1122	our $DEFAULT_RESET = 3000;
		1123
		1124	sub generate_random_map {
		1125	my ($self, $rmp) = @_;
		1126
		1127	# mit "rum" bekleckern, nicht
		1128	$self->_create_random_map (
		1129	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1130	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1131	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1132	$rmp->{exit_on_final_map},
		1133	$rmp->{xsize}, $rmp->{ysize},
		1134	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1135	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1136	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1137	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1138	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1139	(cf::region::find $rmp->{region}), $rmp->{custom}
		1140	)
		1141	}
		1142
		1143	sub register {
		1144	my (undef, $regex) = @_;
		1145	my $pkg = caller;
		1146
		1147	no strict;
		1148	push @{"$pkg\::ISA"}, __PACKAGE__;
		1149
		1150	$EXT_MAP{$pkg} = qr<$regex>;
		1151	}
		1152
		1153	# also paths starting with '/'
		1154	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1155
		1156	sub thawer_merge {
		1157	my ($self, $merge) = @_;
		1158
		1159	# we have to keep some variables in memory intact
		1160	local $self->{path};
		1161	local $self->{load_path};
		1162	local $self->{deny_save};
		1163	local $self->{deny_reset};
		1164
		1165	$self->SUPER::thawer_merge ($merge);
		1166	}
		1167
		1168	sub normalise {
		1169	my ($path, $base) = @_;
		1170
		1171	# map plan:
		1172	#
		1173	# /! non-realised random map exit (special hack!)
		1174	# {... are special paths that are not being touched
		1175	# ?xxx/... are special absolute paths
		1176	# ?random/... random maps
		1177	# /... normal maps
		1178	# ~user/... per-player map of a specific user
		1179
		1180	$path =~ s/$PATH_SEP/\//go;
		1181
		1182	# treat it as relative path if it starts with
		1183	# something that looks reasonable
		1184	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1185	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1186
		1187	$base =~ s{[^/]+/?$}{};
		1188	$path = "$base/$path";
		1189	}
		1190
		1191	for ($path) {
		1192	redo if s{//}{/};
		1193	redo if s{/\.?/}{/};
		1194	redo if s{/[^/]+/\.\./}{/};
		1195	}
		1196
		1197	$path
		1198	}
		1199
		1200	sub new_from_path {
		1201	my (undef, $path, $base) = @_;
		1202
		1203	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1204
		1205	$path = normalise $path, $base;
		1206
		1207	for my $pkg (keys %EXT_MAP) {
		1208	if ($path =~ $EXT_MAP{$pkg}) {
		1209	my $self = bless cf::map::new, $pkg;
		1210	$self->{path} = $path; $self->path ($path);
		1211	$self->init; # pass $1 etc.
		1212	return $self;
		1213	}
		1214	}
		1215
		1216	Carp::carp "unable to resolve path '$path'.";
		1217	()
		1218	}
		1219
		1220	sub init {
		1221	my ($self) = @_;
		1222
		1223	$self
		1224	}
		1225
		1226	sub as_string {
		1227	my ($self) = @_;
		1228
		1229	"$self->{path}"
		1230	}
		1231
		1232	# the displayed name, this is a one way mapping
		1233	sub visible_name {
		1234	&as_string
		1235	}
		1236
		1237	# the original (read-only) location
		1238	sub load_path {
		1239	my ($self) = @_;
		1240
		1241	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1242	}
		1243
		1244	# the temporary/swap location
		1245	sub save_path {
		1246	my ($self) = @_;
		1247
		1248	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1249	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1250	}
		1251
		1252	# the unique path, undef == no special unique path
		1253	sub uniq_path {
		1254	my ($self) = @_;
		1255
		1256	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1257	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1258	}
		1259
		1260	# and all this just because we cannot iterate over
		1261	# all maps in C++...
		1262	sub change_all_map_light {
		1263	my ($change) = @_;
		1264
		1265	$_->change_map_light ($change)
		1266	for grep $_->outdoor, values %cf::MAP;
		1267	}
		1268
		1269	sub unlink_save {
		1270	my ($self) = @_;
		1271
		1272	utf8::encode (my $save = $self->save_path);
		1273	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1274	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1275	}
		1276
		1277	sub load_header_from($) {
		1278	my ($self, $path) = @_;
		1279
		1280	utf8::encode $path;
		1281	aio_open $path, O_RDONLY, 0
		1282	or return;
		1283
		1284	$self->_load_header ($path)
		1285	or return;
		1286
		1287	$self->{load_path} = $path;
		1288
		1289	1
		1290	}
		1291
		1292	sub load_orig {
		1293	my ($self) = @_;
		1294
		1295	$self->load_header_from ($self->load_path)
		1296	}
		1297
		1298	sub load_temp {
		1299	my ($self) = @_;
		1300
		1301	$self->load_header_from ($self->save_path)
		1302	}
		1303
		1304	sub load_header {
		1305	my ($self) = @_;
		1306
		1307	if ($self->load_temp) {
		1308	$self->last_access ((delete $self->{last_access})
		1309	|| $cf::RUNTIME); #d#
		1310	# safety
		1311	$self->{instantiate_time} = $cf::RUNTIME
		1312	if $self->{instantiate_time} > $cf::RUNTIME;
		1313	} else {
		1314	$self->load_orig
		1315	or return;
		1316
		1317	$self->{load_original} = 1;
		1318	$self->{instantiate_time} = $cf::RUNTIME;
		1319	$self->last_access ($cf::RUNTIME);
		1320	$self->instantiate;
		1321	}
		1322
		1323	1
		1324	}
		1325
		1326	sub find;
		1327	sub find {
		1328	my ($path, $origin) = @_;
		1329
		1330	$path = normalise $path, $origin && $origin->path;
		1331
		1332	cf::lock_wait "map_find:$path";
		1333
		1334	$cf::MAP{$path} || do {
		1335	my $guard = cf::lock_acquire "map_find:$path";
		1336	my $map = new_from_path cf::map $path
		1337	or return;
		1338
		1339	$map->{last_save} = $cf::RUNTIME;
		1340
		1341	$map->load_header
		1342	or return;
		1343
		1344	if ($map->should_reset) {
		1345	$cf::WAIT_FOR_TICK->wait;
		1346	$map->reset;
		1347	undef $guard;
		1348	$map = find $path
		1349	or return;
		1350	}
		1351
		1352	$cf::MAP{$path} = $map
		1353	}
		1354	}
		1355
		1356	sub load {
		1357	my ($self) = @_;
		1358
		1359	my $path = $self->{path};
		1360	my $guard = cf::lock_acquire "map_load:$path";
		1361
		1362	return if $self->in_memory != cf::MAP_SWAPPED;
		1363
		1364	$self->in_memory (cf::MAP_LOADING);
		1365
		1366	$self->alloc;
		1367	$self->_load_objects ($self->{load_path}, 1)
		1368	or return;
		1369
		1370	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1371	if delete $self->{load_original};
		1372
		1373	if (my $uniq = $self->uniq_path) {
		1374	utf8::encode $uniq;
		1375	if (aio_open $uniq, O_RDONLY, 0) {
		1376	$self->clear_unique_items;
		1377	$self->_load_objects ($uniq, 0);
		1378	}
		1379	}
		1380
		1381	Coro::cede;
		1382
		1383	# now do the right thing for maps
		1384	$self->link_multipart_objects;
		1385
		1386	unless ($self->{deny_activate}) {
		1387	$self->decay_objects;
		1388	$self->fix_auto_apply;
		1389	$self->update_buttons;
		1390	Coro::cede;
		1391	$self->set_darkness_map;
		1392	$self->difficulty ($self->estimate_difficulty)
		1393	unless $self->difficulty;
		1394	Coro::cede;
		1395	$self->activate;
		1396	}
		1397
		1398	$self->in_memory (cf::MAP_IN_MEMORY);
		1399	}
		1400
		1401	sub customise_for {
		1402	my ($self, $ob) = @_;
		1403
		1404	return find "~" . $ob->name . "/" . $self->{path}
		1405	if $self->per_player;
		1406
		1407	$self
		1408	}
		1409
		1410	# find and load all maps in the 3x3 area around a map
		1411	sub load_diag {
743	my ($map) = @_;	1412	my ($map) = @_;
744		1413
745	my $path = $map->tmpname;	1414	my @diag; # diagonal neighbours
746	defined $path or return;
747		1415
748	unlink "$path.pst";	1416	for (0 .. 3) {
		1417	my $neigh = $map->tile_path ($_)
		1418	or next;
		1419	$neigh = find $neigh, $map
		1420	or next;
		1421	$neigh->load;
		1422
		1423	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1424	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1425	}
		1426
		1427	for (@diag) {
		1428	my $neigh = find @$_
		1429	or next;
		1430	$neigh->load;
		1431	}
		1432	}
		1433
		1434	sub find_sync {
		1435	my ($path, $origin) = @_;
		1436
		1437	cf::sync_job { find $path, $origin }
		1438	}
		1439
		1440	sub do_load_sync {
		1441	my ($map) = @_;
		1442
		1443	cf::sync_job { $map->load };
		1444	}
		1445
		1446	our %MAP_PREFETCH;
		1447	our $MAP_PREFETCHER = Coro::async {
		1448	while () {
		1449	for my $path (keys %MAP_PREFETCH) {
		1450	my $map = find $path
		1451	or next;
		1452	$map->load;
		1453
		1454	delete $MAP_PREFETCH{$path};
		1455	}
		1456	Coro::schedule;
		1457	}
749	};	1458	};
750		1459
751	attach_to_maps prio => -10000, package => cf::mapsupport::;	1460	sub find_async {
		1461	my ($path, $origin) = @_;
752		1462
753	#############################################################################	1463	$path = normalise $path, $origin && $origin->{path};
754	# load/save perl data associated with player->ob objects
755		1464
756	sub all_objects(@) {	1465	if (my $map = $cf::MAP{$path}) {
757	@_, map all_objects ($_->inv), @_	1466	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
758	}
759
760	# TODO: compatibility cruft, remove when no longer needed
761	attach_to_players
762	on_load => sub {
763	my ($pl, $path) = @_;
764
765	for my $o (all_objects $pl->ob) {
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {
767	$o->set_ob_key_value ("_perl_data");
768
769	%$o = %{ Storable::thaw pack "H*", $value };
770	}
771	}
772	},	1467	}
773	;
774		1468
775	#############################################################################	1469	$MAP_PREFETCH{$path} = 0;
		1470	$MAP_PREFETCHER->ready;
776		1471
777	=head2 CORE EXTENSIONS	1472	()
		1473	}
778		1474
779	Functions and methods that extend core crossfire objects.	1475	sub save {
		1476	my ($self) = @_;
		1477
		1478	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1479
		1480	$self->{last_save} = $cf::RUNTIME;
		1481
		1482	return unless $self->dirty;
		1483
		1484	my $save = $self->save_path; utf8::encode $save;
		1485	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1486
		1487	$self->{load_path} = $save;
		1488
		1489	return if $self->{deny_save};
		1490
		1491	local $self->{last_access} = $self->last_access;#d#
		1492
		1493	cf::async {
		1494	$_->contr->save for $self->players;
		1495	};
		1496
		1497	if ($uniq) {
		1498	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1499	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1500	} else {
		1501	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1502	}
		1503	}
		1504
		1505	sub swap_out {
		1506	my ($self) = @_;
		1507
		1508	# save first because save cedes
		1509	$self->save;
		1510
		1511	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1512
		1513	return if $self->players;
		1514	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1515	return if $self->{deny_save};
		1516
		1517	$self->clear;
		1518	$self->in_memory (cf::MAP_SWAPPED);
		1519	}
		1520
		1521	sub reset_at {
		1522	my ($self) = @_;
		1523
		1524	# TODO: safety, remove and allow resettable per-player maps
		1525	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1526	return 1e99 if $self->{deny_reset};
		1527
		1528	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1529	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1530
		1531	$time + $to
		1532	}
		1533
		1534	sub should_reset {
		1535	my ($self) = @_;
		1536
		1537	$self->reset_at <= $cf::RUNTIME
		1538	}
		1539
		1540	sub rename {
		1541	my ($self, $new_path) = @_;
		1542
		1543	normalise $new_path;
		1544
		1545	$self->unlink_save;
		1546
		1547	delete $cf::MAP{$self->path};
		1548	$self->{path} = $new_path; $self->path ($self->{path});
		1549	$cf::MAP{$self->path} = $self;
		1550
		1551	$self->save;
		1552	}
		1553
		1554	sub reset {
		1555	my ($self) = @_;
		1556
		1557	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1558
		1559	return if $self->players;
		1560	return if $self->isa ("ext::map_per_player");#d#
		1561
		1562	warn "resetting map ", $self->path;#d#
		1563
		1564	delete $cf::MAP{$self->path};
		1565
		1566	$self->in_memory (cf::MAP_SWAPPED);
		1567	$self->clear;
		1568
		1569	$_->clear_links_to ($self) for values %cf::MAP;
		1570
		1571	$self->unlink_save;
		1572	$self->destroy;
		1573	}
		1574
		1575	my $nuke_counter = "aaaa";
		1576
		1577	sub nuke {
		1578	my ($self) = @_;
		1579
		1580	$self->{deny_save} = 1;
		1581	$self->reset_timeout (1);
		1582	$self->rename ("{nuke}/" . ($nuke_counter++));
		1583	$self->reset; # polite request, might not happen
		1584	}
		1585
		1586	=item cf::map::unique_maps
		1587
		1588	Returns an arrayref of paths of all shared maps that have
		1589	instantiated unique items. May block.
		1590
		1591	=cut
		1592
		1593	sub unique_maps() {
		1594	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1595	or return;
		1596
		1597	my @paths;
		1598
		1599	for (@$files) {
		1600	utf8::decode $_;
		1601	next if /\.pst$/;
		1602	next unless /^$PATH_SEP/o;
		1603
		1604	s/\.map$//;
		1605	push @paths, $_;
		1606	}
		1607
		1608	\@paths
		1609	}
		1610
		1611	package cf;
		1612
		1613	=back
		1614
		1615	=head3 cf::object
		1616
		1617	=cut
		1618
		1619	package cf::object;
780		1620
781	=over 4	1621	=over 4
782		1622
783	=item cf::player::exists $login	1623	=item $ob->inv_recursive
784		1624
785	Returns true when the given account exists.	1625	Returns the inventory of the object _and_ their inventories, recursively.
786		1626
787	=cut	1627	=cut
788		1628
789	sub cf::player::exists($) {	1629	sub inv_recursive_;
790	cf::player::find $_[0]	1630	sub inv_recursive_ {
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1631	map { $_, inv_recursive_ $_->inv } @_
792	}	1632	}
		1633
		1634	sub inv_recursive {
		1635	inv_recursive_ inv $_[0]
		1636	}
		1637
		1638	package cf;
		1639
		1640	=back
		1641
		1642	=head3 cf::object::player
		1643
		1644	=over 4
793		1645
794	=item $player_object->reply ($npc, $msg[, $flags])	1646	=item $player_object->reply ($npc, $msg[, $flags])
795		1647
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1648	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	1649	can be C<undef>. Does the right thing when the player is currently in a
…		…
799		1651
800	=cut	1652	=cut
801		1653
802	# rough implementation of a future "reply" method that works	1654	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	1655	# with dialog boxes.
		1656	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	1657	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	1658	my ($self, $npc, $msg, $flags) = @_;
806		1659
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1660	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		1661
…		…
812	$msg = $npc->name . " says: $msg" if $npc;	1665	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	1666	$self->message ($msg, $flags);
814	}	1667	}
815	}	1668	}
816		1669
817	=item $player->ext_reply ($msgid, $msgtype, %msg)
818
819	Sends an ext reply to the player.
820
821	=cut
822
823	sub cf::player::ext_reply($$$%) {
824	my ($self, $id, %msg) = @_;
825
826	$msg{msgid} = $id;
827
828	$self->send ("ext " . to_json \%msg);
829	}
830
831	=item $player_object->may ("access")	1670	=item $player_object->may ("access")
832		1671
833	Returns wether the given player is authorized to access resource "access"	1672	Returns wether the given player is authorized to access resource "access"
834	(e.g. "command_wizcast").	1673	(e.g. "command_wizcast").
835		1674
…		…
842	(ref $cf::CFG{"may_$access"}	1681	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1682	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	1683	: $cf::CFG{"may_$access"})
845	}	1684	}
846		1685
847	=cut	1686	=item $player_object->enter_link
848		1687
849	#############################################################################	1688	Freezes the player and moves him/her to a special map (C<{link}>).
		1689
		1690	The player should be reasonably safe there for short amounts of time. You
		1691	I<MUST> call C<leave_link> as soon as possible, though.
		1692
		1693	Will never block.
		1694
		1695	=item $player_object->leave_link ($map, $x, $y)
		1696
		1697	Moves the player out of the special C<{link}> map onto the specified
		1698	map. If the map is not valid (or omitted), the player will be moved back
		1699	to the location he/she was before the call to C<enter_link>, or, if that
		1700	fails, to the emergency map position.
		1701
		1702	Might block.
		1703
		1704	=cut
		1705
		1706	sub link_map {
		1707	unless ($LINK_MAP) {
		1708	$LINK_MAP = cf::map::find "{link}"
		1709	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1710	$LINK_MAP->load;
		1711	}
		1712
		1713	$LINK_MAP
		1714	}
		1715
		1716	sub cf::object::player::enter_link {
		1717	my ($self) = @_;
		1718
		1719	$self->deactivate_recursive;
		1720
		1721	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1722
		1723	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1724	if $self->map;
		1725
		1726	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1727	}
		1728
		1729	sub cf::object::player::leave_link {
		1730	my ($self, $map, $x, $y) = @_;
		1731
		1732	my $link_pos = delete $self->{_link_pos};
		1733
		1734	unless ($map) {
		1735	# restore original map position
		1736	($map, $x, $y) = @{ $link_pos || [] };
		1737	$map = cf::map::find $map;
		1738
		1739	unless ($map) {
		1740	($map, $x, $y) = @$EMERGENCY_POSITION;
		1741	$map = cf::map::find $map
		1742	or die "FATAL: cannot load emergency map\n";
		1743	}
		1744	}
		1745
		1746	($x, $y) = (-1, -1)
		1747	unless (defined $x) && (defined $y);
		1748
		1749	# use -1 or undef as default coordinates, not 0, 0
		1750	($x, $y) = ($map->enter_x, $map->enter_y)
		1751	if $x <=0 && $y <= 0;
		1752
		1753	$map->load;
		1754	$map->load_diag;
		1755
		1756	return unless $self->contr->active;
		1757	$self->activate_recursive;
		1758	$self->enter_map ($map, $x, $y);
		1759	}
		1760
		1761	cf::player->attach (
		1762	on_logout => sub {
		1763	my ($pl) = @_;
		1764
		1765	# abort map switching before logout
		1766	if ($pl->ob->{_link_pos}) {
		1767	cf::sync_job {
		1768	$pl->ob->leave_link
		1769	};
		1770	}
		1771	},
		1772	on_login => sub {
		1773	my ($pl) = @_;
		1774
		1775	# try to abort aborted map switching on player login :)
		1776	# should happen only on crashes
		1777	if ($pl->ob->{_link_pos}) {
		1778	$pl->ob->enter_link;
		1779	(async {
		1780	# we need this sleep as the login has a concurrent enter_exit running
		1781	# and this sleep increases chances of the player not ending up in scorn
		1782	$pl->ob->reply (undef,
		1783	"There was an internal problem at your last logout, "
		1784	. "the server will try to bring you to your intended destination in a second.",
		1785	cf::NDI_RED);
		1786	Coro::Timer::sleep 1;
		1787	$pl->ob->leave_link;
		1788	})->prio (2);
		1789	}
		1790	},
		1791	);
		1792
		1793	=item $player_object->goto ($path, $x, $y)
		1794
		1795	=cut
		1796
		1797	sub cf::object::player::goto {
		1798	my ($self, $path, $x, $y) = @_;
		1799
		1800	$self->enter_link;
		1801
		1802	(async {
		1803	my $map = cf::map::find $path;
		1804	$map = $map->customise_for ($self) if $map;
		1805
		1806	# warn "entering ", $map->path, " at ($x, $y)\n"
		1807	# if $map;
		1808
		1809	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1810
		1811	$self->leave_link ($map, $x, $y);
		1812	})->prio (1);
		1813	}
		1814
		1815	=item $player_object->enter_exit ($exit_object)
		1816
		1817	=cut
		1818
		1819	sub parse_random_map_params {
		1820	my ($spec) = @_;
		1821
		1822	my $rmp = { # defaults
		1823	xsize => 10,
		1824	ysize => 10,
		1825	};
		1826
		1827	for (split /\n/, $spec) {
		1828	my ($k, $v) = split /\s+/, $_, 2;
		1829
		1830	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1831	}
		1832
		1833	$rmp
		1834	}
		1835
		1836	sub prepare_random_map {
		1837	my ($exit) = @_;
		1838
		1839	# all this does is basically replace the /! path by
		1840	# a new random map path (?random/...) with a seed
		1841	# that depends on the exit object
		1842
		1843	my $rmp = parse_random_map_params $exit->msg;
		1844
		1845	if ($exit->map) {
		1846	$rmp->{region} = $exit->map->region_name;
		1847	$rmp->{origin_map} = $exit->map->path;
		1848	$rmp->{origin_x} = $exit->x;
		1849	$rmp->{origin_y} = $exit->y;
		1850	}
		1851
		1852	$rmp->{random_seed} ||= $exit->random_seed;
		1853
		1854	my $data = cf::to_json $rmp;
		1855	my $md5 = Digest::MD5::md5_hex $data;
		1856
		1857	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1858	aio_write $fh, 0, (length $data), $data, 0;
		1859
		1860	$exit->slaying ("?random/$md5");
		1861	$exit->msg (undef);
		1862	}
		1863	}
		1864
		1865	sub cf::object::player::enter_exit {
		1866	my ($self, $exit) = @_;
		1867
		1868	return unless $self->type == cf::PLAYER;
		1869
		1870	$self->enter_link;
		1871
		1872	(async {
		1873	$self->deactivate_recursive; # just to be sure
		1874	unless (eval {
		1875	prepare_random_map $exit
		1876	if $exit->slaying eq "/!";
		1877
		1878	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1879	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1880
		1881	1;
		1882	}) {
		1883	$self->message ("Something went wrong deep within the crossfire server. "
		1884	. "I'll try to bring you back to the map you were before. "
		1885	. "Please report this to the dungeon master!",
		1886	cf::NDI_UNIQUE | cf::NDI_RED);
		1887
		1888	warn "ERROR in enter_exit: $@";
		1889	$self->leave_link;
		1890	}
		1891	})->prio (1);
		1892	}
		1893
		1894	=head3 cf::client
		1895
		1896	=over 4
		1897
		1898	=item $client->send_drawinfo ($text, $flags)
		1899
		1900	Sends a drawinfo packet to the client. Circumvents output buffering so
		1901	should not be used under normal circumstances.
		1902
		1903	=cut
		1904
		1905	sub cf::client::send_drawinfo {
		1906	my ($self, $text, $flags) = @_;
		1907
		1908	utf8::encode $text;
		1909	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1910	}
		1911
		1912
		1913	=item $success = $client->query ($flags, "text", \&cb)
		1914
		1915	Queues a query to the client, calling the given callback with
		1916	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1917	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1918
		1919	Queries can fail, so check the return code. Or don't, as queries will become
		1920	reliable at some point in the future.
		1921
		1922	=cut
		1923
		1924	sub cf::client::query {
		1925	my ($self, $flags, $text, $cb) = @_;
		1926
		1927	return unless $self->state == ST_PLAYING
		1928	|| $self->state == ST_SETUP
		1929	|| $self->state == ST_CUSTOM;
		1930
		1931	$self->state (ST_CUSTOM);
		1932
		1933	utf8::encode $text;
		1934	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1935
		1936	$self->send_packet ($self->{query_queue}[0][0])
		1937	if @{ $self->{query_queue} } == 1;
		1938	}
		1939
		1940	cf::client->attach (
		1941	on_reply => sub {
		1942	my ($ns, $msg) = @_;
		1943
		1944	# this weird shuffling is so that direct followup queries
		1945	# get handled first
		1946	my $queue = delete $ns->{query_queue}
		1947	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1948
		1949	(shift @$queue)->[1]->($msg);
		1950
		1951	push @{ $ns->{query_queue} }, @$queue;
		1952
		1953	if (@{ $ns->{query_queue} } == @$queue) {
		1954	if (@$queue) {
		1955	$ns->send_packet ($ns->{query_queue}[0][0]);
		1956	} else {
		1957	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1958	}
		1959	}
		1960	},
		1961	);
		1962
		1963	=item $client->async (\&cb)
		1964
		1965	Create a new coroutine, running the specified callback. The coroutine will
		1966	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1967	or loss of connection).
		1968
		1969	=cut
		1970
		1971	sub cf::client::async {
		1972	my ($self, $cb) = @_;
		1973
		1974	my $coro = &Coro::async ($cb);
		1975
		1976	$coro->on_destroy (sub {
		1977	delete $self->{_coro}{$coro+0};
		1978	});
		1979
		1980	$self->{_coro}{$coro+0} = $coro;
		1981
		1982	$coro
		1983	}
		1984
		1985	cf::client->attach (
		1986	on_destroy => sub {
		1987	my ($ns) = @_;
		1988
		1989	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1990	},
		1991	);
		1992
		1993	=back
		1994
850		1995
851	=head2 SAFE SCRIPTING	1996	=head2 SAFE SCRIPTING
852		1997
853	Functions that provide a safe environment to compile and execute	1998	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	1999	snippets of perl code without them endangering the safety of the server
…		…
869		2014
870	=pod	2015	=pod
871		2016
872	The following fucntions and emthods are available within a safe environment:	2017	The following fucntions and emthods are available within a safe environment:
873		2018
874	cf::object contr pay_amount pay_player	2019	cf::object contr pay_amount pay_player map
875	cf::object::player player	2020	cf::object::player player
876	cf::player peaceful	2021	cf::player peaceful
		2022	cf::map trigger
877		2023
878	=cut	2024	=cut
879		2025
880	for (	2026	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	2027	["cf::object" => qw(contr pay_amount pay_player map)],
882	["cf::object::player" => qw(player)],	2028	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	2029	["cf::player" => qw(peaceful)],
		2030	["cf::map" => qw(trigger)],
884	) {	2031	) {
885	no strict 'refs';	2032	no strict 'refs';
886	my ($pkg, @funs) = @$_;	2033	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2034	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	2035	for @funs;
…		…
1004		2151
1005	{	2152	{
1006	my $path = cf::localdir . "/database.pst";	2153	my $path = cf::localdir . "/database.pst";
1007		2154
1008	sub db_load() {	2155	sub db_load() {
1009	warn "loading database $path\n";#d# remove later
1010	$DB = stat $path ? Storable::retrieve $path : { };	2156	$DB = stat $path ? Storable::retrieve $path : { };
1011	}	2157	}
1012		2158
1013	my $pid;	2159	my $pid;
1014		2160
1015	sub db_save() {	2161	sub db_save() {
1016	warn "saving database $path\n";#d# remove later
1017	waitpid $pid, 0 if $pid;	2162	waitpid $pid, 0 if $pid;
1018	if (0 == ($pid = fork)) {	2163	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;	2164	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";	2165	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;	2166	rename "$path~", $path;
…		…
1028	sub db_sync() {	2173	sub db_sync() {
1029	db_save if $dirty;	2174	db_save if $dirty;
1030	undef $dirty;	2175	undef $dirty;
1031	}	2176	}
1032		2177
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2178	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1034	db_sync;	2179	db_sync;
1035	});	2180	});
1036		2181
1037	sub db_dirty() {	2182	sub db_dirty() {
1038	$dirty = 1;	2183	$dirty = 1;
…		…
1052	$DB->{$_[0]} = $_[1];	2197	$DB->{$_[0]} = $_[1];
1053	}	2198	}
1054	db_dirty;	2199	db_dirty;
1055	}	2200	}
1056		2201
1057	attach_global	2202	cf::global->attach (
1058	prio => 10000,	2203	prio => 10000,
1059	on_cleanup => sub {	2204	on_cleanup => sub {
1060	db_sync;	2205	db_sync;
1061	},	2206	},
1062	;	2207	);
1063	}	2208	}
1064		2209
1065	#############################################################################	2210	#############################################################################
1066	# the server's main()	2211	# the server's main()
1067		2212
…		…
1069	open my $fh, "<:utf8", cf::confdir . "/config"	2214	open my $fh, "<:utf8", cf::confdir . "/config"
1070	or return;	2215	or return;
1071		2216
1072	local $/;	2217	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;	2218	*CFG = YAML::Syck::Load <$fh>;
		2219
		2220	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2221
		2222	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2223	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2224
		2225	if (exists $CFG{mlockall}) {
		2226	eval {
		2227	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2228	and die "WARNING: m(un)lockall failed: $!\n";
		2229	};
		2230	warn $@ if $@;
		2231	}
1074	}	2232	}
1075		2233
1076	sub main {	2234	sub main {
		2235	# we must not ever block the main coroutine
		2236	local $Coro::idle = sub {
		2237	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2238	async { Event::one_event };
		2239	};
		2240
1077	cfg_load;	2241	cfg_load;
1078	db_load;	2242	db_load;
1079	load_extensions;	2243	load_extensions;
1080	Event::loop;	2244	Event::loop;
1081	}	2245	}
1082		2246
1083	#############################################################################	2247	#############################################################################
1084	# initialisation	2248	# initialisation and cleanup
1085		2249
		2250	# install some emergency cleanup handlers
		2251	BEGIN {
		2252	for my $signal (qw(INT HUP TERM)) {
		2253	Event->signal (
		2254	data => WF_AUTOCANCEL,
		2255	signal => $signal,
		2256	cb => sub {
		2257	cf::cleanup "SIG$signal";
		2258	},
		2259	);
		2260	}
		2261	}
		2262
		2263	sub emergency_save() {
		2264	my $freeze_guard = cf::freeze_mainloop;
		2265
		2266	warn "enter emergency perl save\n";
		2267
		2268	cf::sync_job {
		2269	# use a peculiar iteration method to avoid tripping on perl
		2270	# refcount bugs in for. also avoids problems with players
		2271	# and maps saved/destroyed asynchronously.
		2272	warn "begin emergency player save\n";
		2273	for my $login (keys %cf::PLAYER) {
		2274	my $pl = $cf::PLAYER{$login} or next;
		2275	$pl->valid or next;
		2276	$pl->save;
		2277	}
		2278	warn "end emergency player save\n";
		2279
		2280	warn "begin emergency map save\n";
		2281	for my $path (keys %cf::MAP) {
		2282	my $map = $cf::MAP{$path} or next;
		2283	$map->valid or next;
		2284	$map->save;
		2285	}
		2286	warn "end emergency map save\n";
		2287	};
		2288
		2289	warn "leave emergency perl save\n";
		2290	}
		2291
1086	sub _perl_reload(&) {	2292	sub reload() {
1087	my ($msg) = @_;	2293	# can/must only be called in main
		2294	if ($Coro::current != $Coro::main) {
		2295	warn "can only reload from main coroutine\n";
		2296	return;
		2297	}
1088		2298
1089	$msg->("reloading...");	2299	warn "reloading...";
		2300
		2301	warn "freezing server";
		2302	my $guard = freeze_mainloop;
		2303	cf::emergency_save;
		2304
		2305	warn "sync database to disk";
		2306	cf::db_sync;
		2307	IO::AIO::flush;
1090		2308
1091	eval {	2309	eval {
		2310	# if anything goes wrong in here, we should simply crash as we already saved
		2311
1092	# cancel all watchers	2312	warn "cancel all watchers";
1093	$_->cancel for Event::all_watchers;	2313	for (Event::all_watchers) {
		2314	$_->cancel if $_->data & WF_AUTOCANCEL;
		2315	}
1094		2316
		2317	warn "cancel all extension coros";
		2318	$_->cancel for values %EXT_CORO;
		2319	%EXT_CORO = ();
		2320
		2321	warn "remove commands";
		2322	%COMMAND = ();
		2323
		2324	warn "remove ext commands";
		2325	%EXTCMD = ();
		2326
1095	# unload all extensions	2327	warn "unload/nuke all extensions";
1096	for (@exts) {	2328	for my $pkg (@EXTS) {
1097	$msg->("unloading <$_>");	2329	warn "... unloading $pkg";
1098	unload_extension $_;	2330
		2331	if (my $cb = $pkg->can ("unload")) {
		2332	eval {
		2333	$cb->($pkg);
		2334	1
		2335	} or warn "$pkg unloaded, but with errors: $@";
1099	}	2336	}
1100		2337
		2338	warn "... nuking $pkg";
		2339	Symbol::delete_package $pkg;
		2340	}
		2341
1101	# unload all modules loaded from $LIBDIR	2342	warn "unload all perl modules loaded from $LIBDIR";
1102	while (my ($k, $v) = each %INC) {	2343	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2344	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104		2345
1105	$msg->("removing <$k>");	2346	warn "removing <$k>";
1106	delete $INC{$k};	2347	delete $INC{$k};
1107		2348
1108	$k =~ s/\.pm$//;	2349	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;	2350	$k =~ s/\//::/g;
1110		2351
…		…
1113	}	2354	}
1114		2355
1115	Symbol::delete_package $k;	2356	Symbol::delete_package $k;
1116	}	2357	}
1117		2358
1118	# sync database to disk
1119	cf::db_sync;
1120
1121	# get rid of safe::, as good as possible	2359	warn "get rid of safe::, as good as possible";
1122	Symbol::delete_package "safe::$_"	2360	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2361	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1124		2362
1125	# remove register_script_function callbacks
1126	# TODO
1127
1128	# unload cf.pm "a bit"	2363	warn "unload cf.pm \"a bit\"";
1129	delete $INC{"cf.pm"};	2364	delete $INC{"cf.pm"};
1130		2365
1131	# don't, removes xs symbols, too,	2366	# don't, removes xs symbols, too,
1132	# and global variables created in xs	2367	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;	2368	#Symbol::delete_package __PACKAGE__;
1134		2369
1135	# reload cf.pm
1136	$msg->("reloading cf.pm");	2370	warn "reloading cf.pm";
1137	require cf;	2371	require cf;
		2372	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1138		2373
1139	# load config and database again	2374	warn "load config and database again";
1140	cf::cfg_load;	2375	cf::cfg_load;
1141	cf::db_load;	2376	cf::db_load;
1142		2377
1143	# load extensions	2378	warn "load extensions";
1144	$msg->("load extensions");
1145	cf::load_extensions;	2379	cf::load_extensions;
1146		2380
1147	# reattach attachments to objects	2381	warn "reattach attachments to objects/players";
1148	$msg->("reattach");
1149	_global_reattach;	2382	_global_reattach;
		2383	warn "reattach attachments to maps";
		2384	reattach $_ for values %MAP;
1150	};	2385	};
1151	$msg->($@) if $@;
1152		2386
1153	$msg->("reloaded");	2387	if ($@) {
		2388	warn $@;
		2389	warn "error while reloading, exiting.";
		2390	exit 1;
		2391	}
		2392
		2393	warn "reloaded";
1154	};	2394	};
1155		2395
1156	sub perl_reload() {
1157	_perl_reload {
1158	warn $_[0];
1159	print "$_[0]\n";
1160	};
1161	}
1162
1163	register_command "perl-reload", 0, sub {	2396	register_command "reload" => sub {
1164	my ($who, $arg) = @_;	2397	my ($who, $arg) = @_;
1165		2398
1166	if ($who->flag (FLAG_WIZ)) {	2399	if ($who->flag (FLAG_WIZ)) {
1167	_perl_reload {	2400	$who->message ("start of reload.");
1168	warn $_[0];	2401	reload;
1169	$who->message ($_[0]);	2402	$who->message ("end of reload.");
1170	};
1171	}	2403	}
1172	};	2404	};
1173		2405
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;	2406	unshift @INC, $LIBDIR;
1177		2407
1178	$TICK_WATCHER = Event->timer (	2408	$TICK_WATCHER = Event->timer (
		2409	reentrant => 0,
1179	prio => 1,	2410	prio => 0,
1180	async => 1,
1181	at => $NEXT_TICK || 1,	2411	at => $NEXT_TICK || $TICK,
		2412	data => WF_AUTOCANCEL,
1182	cb => sub {	2413	cb => sub {
		2414	$NOW = Event::time;
		2415
1183	cf::server_tick; # one server iteration	2416	cf::server_tick; # one server iteration
1184		2417	$RUNTIME += $TICK;
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;	2418	$NEXT_TICK += $TICK;
1187		2419
		2420	$WAIT_FOR_TICK->broadcast;
		2421	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2422
1188	# if we are delayed by four ticks or more, skip them all	2423	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2424	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1190		2425
1191	$TICK_WATCHER->at ($NEXT_TICK);	2426	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	2427	$TICK_WATCHER->start;
1193	},	2428	},
1194	);	2429	);
1195		2430
1196	IO::AIO::max_poll_time $TICK * 0.2;	2431	IO::AIO::max_poll_time $TICK * 0.2;
1197		2432
		2433	$AIO_POLL_WATCHER = Event->io (
1198	Event->io (fd => IO::AIO::poll_fileno,	2434	fd => IO::AIO::poll_fileno,
1199	poll => 'r',	2435	poll => 'r',
1200	prio => 5,	2436	prio => 5,
		2437	data => WF_AUTOCANCEL,
1201	cb => \&IO::AIO::poll_cb);	2438	cb => \&IO::AIO::poll_cb,
		2439	);
		2440
		2441	$WRITE_RUNTIME_WATCHER = Event->timer (
		2442	data => WF_AUTOCANCEL,
		2443	after => 0,
		2444	interval => 10,
		2445	cb => sub {
		2446	(Coro::unblock_sub {
		2447	write_runtime
		2448	or warn "ERROR: unable to write runtime file: $!";
		2449	})->();
		2450	},
		2451	);
		2452
		2453	END { cf::emergency_save }
1202		2454
1203	1	2455	1
1204		2456

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