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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.86 by root, Thu Dec 14 05:09:32 2006 UTC vs.
Revision 1.166 by root, Sat Jan 13 23:06:13 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	our %COMMAND = ();	36	our %COMMAND = ();
22	our %COMMAND_TIME = ();	37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
23	our %EXTCMD = ();	40	our %EXTCMD = ();
24		41	our %EXT_CORO = (); # coroutines bound to extensions
25	_init_vars;	42	our %EXT_MAP = (); # pluggable maps
26		43
27	our @EVENT;	44	our @EVENT;
28	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
29		46
30	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
31	our $TICK_WATCHER;	48	our $TICK_WATCHER;
32	our $NEXT_TICK;	49	our $NEXT_TICK;
		50	our $NOW;
33		51
34	our %CFG;	52	our %CFG;
35		53
36	our $UPTIME; $UPTIME ||= time;	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, which is always available
		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	# used to convert map paths into valid unix filenames by replacing / by ∕
		66	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		67
		68	binmode STDOUT;
		69	binmode STDERR;
		70
		71	# read virtual server time, if available
		72	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		73	open my $fh, "<", cf::localdir . "/runtime"
		74	or die "unable to read runtime file: $!";
		75	$RUNTIME = <$fh> + 0.;
		76	}
		77
		78	mkdir cf::localdir;
		79	mkdir cf::localdir . "/" . cf::playerdir;
		80	mkdir cf::localdir . "/" . cf::tmpdir;
		81	mkdir cf::localdir . "/" . cf::uniquedir;
		82	mkdir $RANDOM_MAPS;
		83
		84	our $EMERGENCY_POSITION;
37		85
38	#############################################################################	86	#############################################################################
39		87
40	=head2 GLOBAL VARIABLES	88	=head2 GLOBAL VARIABLES
41		89
42	=over 4	90	=over 4
43		91
44	=item $cf::UPTIME	92	=item $cf::UPTIME
45		93
46	The timestamp of the server start (so not actually an uptime).	94	The timestamp of the server start (so not actually an uptime).
		95
		96	=item $cf::RUNTIME
		97
		98	The time this server has run, starts at 0 and is increased by $cf::TICK on
		99	every server tick.
47		100
48	=item $cf::LIBDIR	101	=item $cf::LIBDIR
49		102
50	The perl library directory, where extensions and cf-specific modules can	103	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	104	be found. It will be added to C<@INC> automatically.
52		105
		106	=item $cf::NOW
		107
		108	The time of the last (current) server tick.
		109
53	=item $cf::TICK	110	=item $cf::TICK
54		111
55	The interval between server ticks, in seconds.	112	The interval between server ticks, in seconds.
56		113
57	=item %cf::CFG	114	=item %cf::CFG
58		115
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	116	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	from wherever your confdir points to.	117	from wherever your confdir points to.
		118
		119	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		120
		121	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		122	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		123	processing has been done. Call C<< ->wait >> on them to maximise the
		124	window of cpu time available, or simply to synchronise to the server tick.
61		125
62	=back	126	=back
63		127
64	=cut	128	=cut
65		129
66	BEGIN {	130	BEGIN {
67	*CORE::GLOBAL::warn = sub {	131	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	132	my $msg = join "", @_;
		133	utf8::encode $msg;
		134
69	$msg .= "\n"	135	$msg .= "\n"
70	unless $msg =~ /\n$/;	136	unless $msg =~ /\n$/;
71		137
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	138	LOG llevError, $msg;
74	};	139	};
75	}	140	}
76		141
		142	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		143	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		144	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		145	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		146	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	147	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		148
79	# we bless all objects into (empty) derived classes to force a method lookup	149	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	150	# within the Safe compartment.
81	for my $pkg (qw(	151	for my $pkg (qw(
		152	cf::global cf::attachable
82	cf::object cf::object::player	153	cf::object cf::object::player
83	cf::client_socket cf::player	154	cf::client cf::player
84	cf::arch cf::living	155	cf::arch cf::living
85	cf::map cf::party cf::region	156	cf::map cf::party cf::region
86	)) {	157	)) {
87	no strict 'refs';	158	no strict 'refs';
88	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	159	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
…		…
90		161
91	$Event::DIED = sub {	162	$Event::DIED = sub {
92	warn "error in event callback: @_";	163	warn "error in event callback: @_";
93	};	164	};
94		165
95	my %ext_pkg;
96	my @exts;
97	my @hook;
98
99	=head2 UTILITY FUNCTIONS	166	=head2 UTILITY FUNCTIONS
100		167
101	=over 4	168	=over 4
102		169
		170	=item dumpval $ref
		171
103	=cut	172	=cut
		173
		174	sub dumpval {
		175	eval {
		176	local $SIG{__DIE__};
		177	my $d;
		178	if (1) {
		179	$d = new Data::Dumper([$_[0]], ["*var"]);
		180	$d->Terse(1);
		181	$d->Indent(2);
		182	$d->Quotekeys(0);
		183	$d->Useqq(1);
		184	#$d->Bless(...);
		185	$d->Seen($_[1]) if @_ > 1;
		186	$d = $d->Dump();
		187	}
		188	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		189	$d
		190	} || "[unable to dump $_[0]: '$@']";
		191	}
104		192
105	use JSON::Syck (); # TODO# replace by JSON::PC once working	193	use JSON::Syck (); # TODO# replace by JSON::PC once working
106		194
107	=item $ref = cf::from_json $json	195	=item $ref = cf::from_json $json
108		196
…		…
124	sub to_json($) {	212	sub to_json($) {
125	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	213	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
126	JSON::Syck::Dump $_[0]	214	JSON::Syck::Dump $_[0]
127	}	215	}
128		216
		217	=item cf::lock_wait $string
		218
		219	Wait until the given lock is available. See cf::lock_acquire.
		220
		221	=item my $lock = cf::lock_acquire $string
		222
		223	Wait until the given lock is available and then acquires it and returns
		224	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		225	for example when the coroutine gets canceled), the lock is automatically
		226	returned.
		227
		228	Lock names should begin with a unique identifier (for example, cf::map::find
		229	uses map_find and cf::map::load uses map_load).
		230
		231	=cut
		232
		233	our %LOCK;
		234
		235	sub lock_wait($) {
		236	my ($key) = @_;
		237
		238	# wait for lock, if any
		239	while ($LOCK{$key}) {
		240	push @{ $LOCK{$key} }, $Coro::current;
		241	Coro::schedule;
		242	}
		243	}
		244
		245	sub lock_acquire($) {
		246	my ($key) = @_;
		247
		248	# wait, to be sure we are not locked
		249	lock_wait $key;
		250
		251	$LOCK{$key} = [];
		252
		253	Coro::guard {
		254	# wake up all waiters, to be on the safe side
		255	$_->ready for @{ delete $LOCK{$key} };
		256	}
		257	}
		258
		259	sub freeze_mainloop {
		260	return unless $TICK_WATCHER->is_active;
		261
		262	my $guard = Coro::guard { $TICK_WATCHER->start };
		263	$TICK_WATCHER->stop;
		264	$guard
		265	}
		266
		267	=item cf::async { BLOCK }
		268
		269	Currently the same as Coro::async_pool, meaning you cannot use
		270	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		271	thing you are allowed to do is call C<prio> on it.
		272
		273	=cut
		274
		275	BEGIN { *async = \&Coro::async_pool }
		276
		277	=item cf::sync_job { BLOCK }
		278
		279	The design of crossfire+ requires that the main coro ($Coro::main) is
		280	always able to handle events or runnable, as crossfire+ is only partly
		281	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		282
		283	If it must be done, put the blocking parts into C<sync_job>. This will run
		284	the given BLOCK in another coroutine while waiting for the result. The
		285	server will be frozen during this time, so the block should either finish
		286	fast or be very important.
		287
		288	=cut
		289
		290	sub sync_job(&) {
		291	my ($job) = @_;
		292
		293	if ($Coro::current == $Coro::main) {
		294	# this is the main coro, too bad, we have to block
		295	# till the operation succeeds, freezing the server :/
		296
		297	# TODO: use suspend/resume instead
		298	# (but this is cancel-safe)
		299	my $freeze_guard = freeze_mainloop;
		300
		301	my $busy = 1;
		302	my @res;
		303
		304	(async {
		305	@res = eval { $job->() };
		306	warn $@ if $@;
		307	undef $busy;
		308	})->prio (Coro::PRIO_MAX);
		309
		310	while ($busy) {
		311	Coro::cede or Event::one_event;
		312	}
		313
		314	wantarray ? @res : $res[0]
		315	} else {
		316	# we are in another coroutine, how wonderful, everything just works
		317
		318	$job->()
		319	}
		320	}
		321
		322	=item $coro = cf::async_ext { BLOCK }
		323
		324	Like async, but this coro is automatically being canceled when the
		325	extension calling this is being unloaded.
		326
		327	=cut
		328
		329	sub async_ext(&) {
		330	my $cb = shift;
		331
		332	my $coro = &Coro::async ($cb);
		333
		334	$coro->on_destroy (sub {
		335	delete $EXT_CORO{$coro+0};
		336	});
		337	$EXT_CORO{$coro+0} = $coro;
		338
		339	$coro
		340	}
		341
		342	sub write_runtime {
		343	return unless $TICK_WATCHER->is_active;
		344
		345	my $runtime = cf::localdir . "/runtime";
		346
		347	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		348	or return;
		349
		350	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		351	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		352	and return;
		353
		354	aio_fsync $fh
		355	and return;
		356
		357	close $fh
		358	or return;
		359
		360	aio_rename "$runtime~", $runtime
		361	and return;
		362
		363	1
		364	}
		365
129	=back	366	=back
130		367
131	=cut	368	=cut
132		369
133	#############################################################################	370	#############################################################################
134		371
135	=head2 EVENTS AND OBJECT ATTACHMENTS	372	=head2 ATTACHABLE OBJECTS
		373
		374	Many objects in crossfire are so-called attachable objects. That means you can
		375	attach callbacks/event handlers (a collection of which is called an "attachment")
		376	to it. All such attachable objects support the following methods.
		377
		378	In the following description, CLASS can be any of C<global>, C<object>
		379	C<player>, C<client> or C<map> (i.e. the attachable objects in
		380	crossfire+).
136		381
137	=over 4	382	=over 4
138		383
139	=item $object->attach ($attachment, key => $value...)
140
141	=item $object->detach ($attachment)
142
143	Attach/detach a pre-registered attachment to an object.
144
145	=item $player->attach ($attachment, key => $value...)
146
147	=item $player->detach ($attachment)
148
149	Attach/detach a pre-registered attachment to a player.
150
151	=item $map->attach ($attachment, key => $value...)	384	=item $attachable->attach ($attachment, key => $value...)
152		385
153	=item $map->detach ($attachment)	386	=item $attachable->detach ($attachment)
154		387
155	Attach/detach a pre-registered attachment to a map.	388	Attach/detach a pre-registered attachment to a specific object and give it
		389	the specified key/value pairs as arguments.
156		390
157	=item $bool = $object->attached ($name)	391	Example, attach a minesweeper attachment to the given object, making it a
		392	10x10 minesweeper game:
158		393
159	=item $bool = $player->attached ($name)	394	$obj->attach (minesweeper => width => 10, height => 10);
160		395
161	=item $bool = $map->attached ($name)	396	=item $bool = $attachable->attached ($name)
162		397
163	Checks wether the named attachment is currently attached to the object.	398	Checks wether the named attachment is currently attached to the object.
164		399
165	=item cf::attach_global ...	400	=item cf::CLASS->attach ...
166		401
167	Attach handlers for global events.	402	=item cf::CLASS->detach ...
168		403
169	This and all following C<attach_*>-functions expect any number of the	404	Define an anonymous attachment and attach it to all objects of the given
170	following handler/hook descriptions:	405	CLASS. See the next function for an explanation of its arguments.
		406
		407	You can attach to global events by using the C<cf::global> class.
		408
		409	Example, log all player logins:
		410
		411	cf::player->attach (
		412	on_login => sub {
		413	my ($pl) = @_;
		414	...
		415	},
		416	);
		417
		418	Example, attach to the jeweler skill:
		419
		420	cf::object->attach (
		421	type => cf::SKILL,
		422	subtype => cf::SK_JEWELER,
		423	on_use_skill => sub {
		424	my ($sk, $ob, $part, $dir, $msg) = @_;
		425	...
		426	},
		427	);
		428
		429	=item cf::CLASS::attachment $name, ...
		430
		431	Register an attachment by C<$name> through which attachable objects of the
		432	given CLASS can refer to this attachment.
		433
		434	Some classes such as crossfire maps and objects can specify attachments
		435	that are attached at load/instantiate time, thus the need for a name.
		436
		437	These calls expect any number of the following handler/hook descriptions:
171		438
172	=over 4	439	=over 4
173		440
174	=item prio => $number	441	=item prio => $number
175		442
…		…
177	by another C<prio> setting). Lower priority handlers get executed	444	by another C<prio> setting). Lower priority handlers get executed
178	earlier. The default priority is C<0>, and many built-in handlers are	445	earlier. The default priority is C<0>, and many built-in handlers are
179	registered at priority C<-1000>, so lower priorities should not be used	446	registered at priority C<-1000>, so lower priorities should not be used
180	unless you know what you are doing.	447	unless you know what you are doing.
181		448
		449	=item type => $type
		450
		451	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		452	given type of objects only (the additional parameter C<subtype> can be
		453	used to further limit to the given subtype).
		454
182	=item on_I<event> => \&cb	455	=item on_I<event> => \&cb
183		456
184	Call the given code reference whenever the named event happens (event is	457	Call the given code reference whenever the named event happens (event is
185	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	458	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
186	handlers are recognised generally depends on the type of object these	459	handlers are recognised generally depends on the type of object these
…		…
195	package and register them. Only handlers for eevents supported by the	468	package and register them. Only handlers for eevents supported by the
196	object/class are recognised.	469	object/class are recognised.
197		470
198	=back	471	=back
199		472
200	=item cf::attach_to_type $object_type, $subtype, ...	473	Example, define an attachment called "sockpuppet" that calls the given
		474	event handler when a monster attacks:
201		475
202	Attach handlers for a specific object type (e.g. TRANSPORT) and	476	cf::object::attachment sockpuppet =>
203	subtype. If C<$subtype> is zero or undef, matches all objects of the given	477	on_skill_attack => sub {
204	type.	478	my ($self, $victim) = @_;
205		479	...
206	=item cf::attach_to_objects ...
207
208	Attach handlers to all objects. Do not use this except for debugging or
209	very rare events, as handlers are (obviously) called for I<all> objects in
210	the game.
211
212	=item cf::attach_to_players ...
213
214	Attach handlers to all players.
215
216	=item cf::attach_to_maps ...
217
218	Attach handlers to all maps.
219
220	=item cf:register_attachment $name, ...
221
222	Register an attachment by name through which objects can refer to this
223	attachment.
224
225	=item cf:register_player_attachment $name, ...
226
227	Register an attachment by name through which players can refer to this
228	attachment.
229
230	=item cf:register_map_attachment $name, ...
231
232	Register an attachment by name through which maps can refer to this
233	attachment.
234
235	=cut
236
237	# the following variables are defined in .xs and must not be re-created
238	our @CB_GLOBAL = (); # registry for all global events
239	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
240	our @CB_PLAYER = ();
241	our @CB_TYPE = (); # registry for type (cf-object class) based events
242	our @CB_MAP = ();
243
244	my %attachment;
245
246	sub _attach_cb($\%$$$) {
247	my ($registry, $undo, $event, $prio, $cb) = @_;
248
249	use sort 'stable';
250
251	$cb = [$prio, $cb];
252
253	@{$registry->[$event]} = sort
254	{ $a->[0] cmp $b->[0] }
255	@{$registry->[$event] || []}, $cb;
256
257	push @{$undo->{cb}}, [$event, $cb];
258	}
259
260	# attach handles attaching event callbacks
261	# the only thing the caller has to do is pass the correct
262	# registry (== where the callback attaches to).
263	sub _attach(\@$@) {
264	my ($registry, $klass, @arg) = @_;
265
266	my $prio = 0;
267
268	my %undo = (
269	registry => $registry,
270	cb => [],
271	);
272
273	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
274
275	while (@arg) {
276	my $type = shift @arg;
277
278	if ($type eq "prio") {
279	$prio = shift @arg;
280
281	} elsif ($type eq "package") {
282	my $pkg = shift @arg;
283
284	while (my ($name, $id) = each %cb_id) {
285	if (my $cb = $pkg->can ($name)) {
286	_attach_cb $registry, %undo, $id, $prio, $cb;
287	}
288	}	480	}
289
290	} elsif (exists $cb_id{$type}) {
291	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
292
293	} elsif (ref $type) {
294	warn "attaching objects not supported, ignoring.\n";
295
296	} else {
297	shift @arg;
298	warn "attach argument '$type' not supported, ignoring.\n";
299	}
300	}
301
302	\%undo
303	}
304
305	sub _attach_attachment {
306	my ($obj, $name, %arg) = @_;
307
308	return if exists $obj->{_attachment}{$name};
309
310	my $res;
311
312	if (my $attach = $attachment{$name}) {
313	my $registry = $obj->registry;
314
315	for (@$attach) {
316	my ($klass, @attach) = @$_;
317	$res = _attach @$registry, $klass, @attach;
318	}
319
320	$obj->{$name} = \%arg;
321	} else {
322	warn "object uses attachment '$name' that is not available, postponing.\n";
323	}
324
325	$obj->{_attachment}{$name} = undef;
326
327	$res->{attachment} = $name;
328	$res
329	}
330
331	*cf::object::attach =
332	*cf::player::attach =
333	*cf::map::attach = sub {
334	my ($obj, $name, %arg) = @_;
335
336	_attach_attachment $obj, $name, %arg;
337	};
338
339	# all those should be optimised
340	*cf::object::detach =
341	*cf::player::detach =
342	*cf::map::detach = sub {
343	my ($obj, $name) = @_;
344
345	delete $obj->{_attachment}{$name};
346	reattach ($obj);
347	};
348
349	*cf::object::attached =
350	*cf::player::attached =
351	*cf::map::attached = sub {
352	my ($obj, $name) = @_;
353
354	exists $obj->{_attachment}{$name}
355	};
356
357	sub attach_global {
358	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
359	}
360
361	sub attach_to_type {
362	my $type = shift;
363	my $subtype = shift;
364
365	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
366	}
367
368	sub attach_to_objects {
369	_attach @CB_OBJECT, KLASS_OBJECT, @_
370	}
371
372	sub attach_to_players {
373	_attach @CB_PLAYER, KLASS_PLAYER, @_
374	}
375
376	sub attach_to_maps {
377	_attach @CB_MAP, KLASS_MAP, @_
378	}
379
380	sub register_attachment {
381	my $name = shift;
382
383	$attachment{$name} = [[KLASS_OBJECT, @_]];
384	}
385
386	sub register_player_attachment {
387	my $name = shift;
388
389	$attachment{$name} = [[KLASS_PLAYER, @_]];
390	}
391
392	sub register_map_attachment {
393	my $name = shift;
394
395	$attachment{$name} = [[KLASS_MAP, @_]];
396	}
397
398	our $override;
399	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
400
401	sub override {
402	$override = 1;
403	@invoke_results = ();
404	}
405
406	sub do_invoke {
407	my $event = shift;
408	my $callbacks = shift;
409
410	@invoke_results = ();
411
412	local $override;
413
414	for (@$callbacks) {
415	eval { &{$_->[1]} };
416
417	if ($@) {
418	warn "$@";
419	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
420	override;
421	}
422
423	return 1 if $override;
424	}
425
426	0	481	}
427	}
428		482
429	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	483	=item $attachable->valid
430
431	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
432
433	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
434
435	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
436
437	Generate a global/object/player/map-specific event with the given arguments.
438
439	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
440	removed in future versions), and there is no public API to access override
441	results (if you must, access C<@cf::invoke_results> directly).
442
443	=back
444
445	=cut
446
447	#############################################################################
448
449	=head2 METHODS VALID FOR ALL CORE OBJECTS
450
451	=over 4
452
453	=item $object->valid, $player->valid, $map->valid
454		484
455	Just because you have a perl object does not mean that the corresponding	485	Just because you have a perl object does not mean that the corresponding
456	C-level object still exists. If you try to access an object that has no	486	C-level object still exists. If you try to access an object that has no
457	valid C counterpart anymore you get an exception at runtime. This method	487	valid C counterpart anymore you get an exception at runtime. This method
458	can be used to test for existence of the C object part without causing an	488	can be used to test for existence of the C object part without causing an
459	exception.	489	exception.
460		490
		491	=cut
		492
		493	# the following variables are defined in .xs and must not be re-created
		494	our @CB_GLOBAL = (); # registry for all global events
		495	our @CB_ATTACHABLE = (); # registry for all attachables
		496	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		497	our @CB_PLAYER = ();
		498	our @CB_CLIENT = ();
		499	our @CB_TYPE = (); # registry for type (cf-object class) based events
		500	our @CB_MAP = ();
		501
		502	my %attachment;
		503
		504	sub _attach_cb($$$$) {
		505	my ($registry, $event, $prio, $cb) = @_;
		506
		507	use sort 'stable';
		508
		509	$cb = [$prio, $cb];
		510
		511	@{$registry->[$event]} = sort
		512	{ $a->[0] cmp $b->[0] }
		513	@{$registry->[$event] || []}, $cb;
		514	}
		515
		516	# hack
		517	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		518
		519	# attach handles attaching event callbacks
		520	# the only thing the caller has to do is pass the correct
		521	# registry (== where the callback attaches to).
		522	sub _attach {
		523	my ($registry, $klass, @arg) = @_;
		524
		525	my $object_type;
		526	my $prio = 0;
		527	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		528
		529	#TODO: get rid of this hack
		530	if ($attachable_klass{$klass}) {
		531	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		532	}
		533
		534	while (@arg) {
		535	my $type = shift @arg;
		536
		537	if ($type eq "prio") {
		538	$prio = shift @arg;
		539
		540	} elsif ($type eq "type") {
		541	$object_type = shift @arg;
		542	$registry = $CB_TYPE[$object_type] ||= [];
		543
		544	} elsif ($type eq "subtype") {
		545	defined $object_type or Carp::croak "subtype specified without type";
		546	my $object_subtype = shift @arg;
		547	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		548
		549	} elsif ($type eq "package") {
		550	my $pkg = shift @arg;
		551
		552	while (my ($name, $id) = each %cb_id) {
		553	if (my $cb = $pkg->can ($name)) {
		554	_attach_cb $registry, $id, $prio, $cb;
		555	}
		556	}
		557
		558	} elsif (exists $cb_id{$type}) {
		559	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		560
		561	} elsif (ref $type) {
		562	warn "attaching objects not supported, ignoring.\n";
		563
		564	} else {
		565	shift @arg;
		566	warn "attach argument '$type' not supported, ignoring.\n";
		567	}
		568	}
		569	}
		570
		571	sub _object_attach {
		572	my ($obj, $name, %arg) = @_;
		573
		574	return if exists $obj->{_attachment}{$name};
		575
		576	if (my $attach = $attachment{$name}) {
		577	my $registry = $obj->registry;
		578
		579	for (@$attach) {
		580	my ($klass, @attach) = @$_;
		581	_attach $registry, $klass, @attach;
		582	}
		583
		584	$obj->{$name} = \%arg;
		585	} else {
		586	warn "object uses attachment '$name' that is not available, postponing.\n";
		587	}
		588
		589	$obj->{_attachment}{$name} = undef;
		590	}
		591
		592	sub cf::attachable::attach {
		593	if (ref $_[0]) {
		594	_object_attach @_;
		595	} else {
		596	_attach shift->_attach_registry, @_;
		597	}
		598	};
		599
		600	# all those should be optimised
		601	sub cf::attachable::detach {
		602	my ($obj, $name) = @_;
		603
		604	if (ref $obj) {
		605	delete $obj->{_attachment}{$name};
		606	reattach ($obj);
		607	} else {
		608	Carp::croak "cannot, currently, detach class attachments";
		609	}
		610	};
		611
		612	sub cf::attachable::attached {
		613	my ($obj, $name) = @_;
		614
		615	exists $obj->{_attachment}{$name}
		616	}
		617
		618	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		619	eval "#line " . __LINE__ . " 'cf.pm'
		620	sub cf::\L$klass\E::_attach_registry {
		621	(\\\@CB_$klass, KLASS_$klass)
		622	}
		623
		624	sub cf::\L$klass\E::attachment {
		625	my \$name = shift;
		626
		627	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		628	}
		629	";
		630	die if $@;
		631	}
		632
		633	our $override;
		634	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		635
		636	sub override {
		637	$override = 1;
		638	@invoke_results = ();
		639	}
		640
		641	sub do_invoke {
		642	my $event = shift;
		643	my $callbacks = shift;
		644
		645	@invoke_results = ();
		646
		647	local $override;
		648
		649	for (@$callbacks) {
		650	eval { &{$_->[1]} };
		651
		652	if ($@) {
		653	warn "$@";
		654	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		655	override;
		656	}
		657
		658	return 1 if $override;
		659	}
		660
		661	0
		662	}
		663
		664	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		665
		666	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		667
		668	Generate an object-specific event with the given arguments.
		669
		670	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		671	removed in future versions), and there is no public API to access override
		672	results (if you must, access C<@cf::invoke_results> directly).
		673
461	=back	674	=back
462		675
463	=cut	676	=cut
464
465	*cf::object::valid =
466	*cf::player::valid =
467	*cf::map::valid = \&cf::_valid;
468		677
469	#############################################################################	678	#############################################################################
470	# object support	679	# object support
471		680
472	sub instantiate {
473	my ($obj, $data) = @_;
474
475	$data = from_json $data;
476
477	for (@$data) {
478	my ($name, $args) = @$_;
479
480	$obj->attach ($name, %{$args || {} });
481	}
482	}
483
484	# basically do the same as instantiate, without calling instantiate
485	sub reattach {	681	sub reattach {
		682	# basically do the same as instantiate, without calling instantiate
486	my ($obj) = @_;	683	my ($obj) = @_;
		684
487	my $registry = $obj->registry;	685	my $registry = $obj->registry;
488		686
489	@$registry = ();	687	@$registry = ();
490		688
491	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	689	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
492		690
493	for my $name (keys %{ $obj->{_attachment} || {} }) {	691	for my $name (keys %{ $obj->{_attachment} || {} }) {
494	if (my $attach = $attachment{$name}) {	692	if (my $attach = $attachment{$name}) {
495	for (@$attach) {	693	for (@$attach) {
496	my ($klass, @attach) = @$_;	694	my ($klass, @attach) = @$_;
497	_attach @$registry, $klass, @attach;	695	_attach $registry, $klass, @attach;
498	}	696	}
499	} else {	697	} else {
500	warn "object uses attachment '$name' that is not available, postponing.\n";	698	warn "object uses attachment '$name' that is not available, postponing.\n";
501	}	699	}
502	}	700	}
503	}	701	}
504		702
505	sub object_freezer_save {	703	cf::attachable->attach (
506	my ($filename, $rdata, $objs) = @_;
507
508	if (length $$rdata) {
509	warn sprintf "saving %s (%d,%d)\n",
510	$filename, length $$rdata, scalar @$objs;
511
512	if (open my $fh, ">:raw", "$filename~") {
513	chmod SAVE_MODE, $fh;
514	syswrite $fh, $$rdata;
515	close $fh;
516
517	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
518	chmod SAVE_MODE, $fh;
519	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
520	close $fh;
521	rename "$filename.pst~", "$filename.pst";
522	} else {
523	unlink "$filename.pst";
524	}
525
526	rename "$filename~", $filename;
527	} else {
528	warn "FATAL: $filename~: $!\n";
529	}
530	} else {
531	unlink $filename;
532	unlink "$filename.pst";
533	}
534	}
535
536	sub object_freezer_as_string {
537	my ($rdata, $objs) = @_;
538
539	use Data::Dumper;
540
541	$$rdata . Dumper $objs
542	}
543
544	sub object_thawer_load {
545	my ($filename) = @_;
546
547	local $/;
548
549	my $av;
550
551	#TODO: use sysread etc.
552	if (open my $data, "<:raw:perlio", $filename) {
553	$data = <$data>;
554	if (open my $pst, "<:raw:perlio", "$filename.pst") {
555	$av = eval { (Storable::thaw <$pst>)->{objs} };
556	}
557	return ($data, $av);
558	}
559
560	()
561	}
562
563	attach_to_objects
564	prio => -1000000,	704	prio => -1000000,
		705	on_instantiate => sub {
		706	my ($obj, $data) = @_;
		707
		708	$data = from_json $data;
		709
		710	for (@$data) {
		711	my ($name, $args) = @$_;
		712
		713	$obj->attach ($name, %{$args || {} });
		714	}
		715	},
		716	on_reattach => \&reattach,
565	on_clone => sub {	717	on_clone => sub {
566	my ($src, $dst) = @_;	718	my ($src, $dst) = @_;
567		719
568	@{$dst->registry} = @{$src->registry};	720	@{$dst->registry} = @{$src->registry};
569		721
570	%$dst = %$src;	722	%$dst = %$src;
571		723
572	%{$dst->{_attachment}} = %{$src->{_attachment}}	724	%{$dst->{_attachment}} = %{$src->{_attachment}}
573	if exists $src->{_attachment};	725	if exists $src->{_attachment};
574	},	726	},
575	;	727	);
		728
		729	sub object_freezer_save {
		730	my ($filename, $rdata, $objs) = @_;
		731
		732	sync_job {
		733	if (length $$rdata) {
		734	warn sprintf "saving %s (%d,%d)\n",
		735	$filename, length $$rdata, scalar @$objs;
		736
		737	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		738	chmod SAVE_MODE, $fh;
		739	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		740	aio_fsync $fh;
		741	close $fh;
		742
		743	if (@$objs) {
		744	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		745	chmod SAVE_MODE, $fh;
		746	my $data = Storable::nfreeze { version => 1, objs => $objs };
		747	aio_write $fh, 0, (length $data), $data, 0;
		748	aio_fsync $fh;
		749	close $fh;
		750	aio_rename "$filename.pst~", "$filename.pst";
		751	}
		752	} else {
		753	aio_unlink "$filename.pst";
		754	}
		755
		756	aio_rename "$filename~", $filename;
		757	} else {
		758	warn "FATAL: $filename~: $!\n";
		759	}
		760	} else {
		761	aio_unlink $filename;
		762	aio_unlink "$filename.pst";
		763	}
		764	}
		765	}
		766
		767	sub object_freezer_as_string {
		768	my ($rdata, $objs) = @_;
		769
		770	use Data::Dumper;
		771
		772	$$rdata . Dumper $objs
		773	}
		774
		775	sub object_thawer_load {
		776	my ($filename) = @_;
		777
		778	my ($data, $av);
		779
		780	(aio_load $filename, $data) >= 0
		781	or return;
		782
		783	unless (aio_stat "$filename.pst") {
		784	(aio_load "$filename.pst", $av) >= 0
		785	or return;
		786	$av = eval { (Storable::thaw $av)->{objs} };
		787	}
		788
		789	warn sprintf "loading %s (%d)\n",
		790	$filename, length $data, scalar @{$av || []};#d#
		791	return ($data, $av);
		792	}
576		793
577	#############################################################################	794	#############################################################################
578	# command handling &c	795	# command handling &c
579		796
580	=item cf::register_command $name => \&callback($ob,$args);	797	=item cf::register_command $name => \&callback($ob,$args);
…		…
603	=cut	820	=cut
604		821
605	sub register_extcmd {	822	sub register_extcmd {
606	my ($name, $cb) = @_;	823	my ($name, $cb) = @_;
607		824
608	my $caller = caller;
609	#warn "registering extcmd '$name' to '$caller'";
610
611	$EXTCMD{$name} = [$cb, $caller];	825	$EXTCMD{$name} = $cb;
612	}	826	}
613		827
614	attach_to_players	828	cf::player->attach (
615	on_command => sub {	829	on_command => sub {
616	my ($pl, $name, $params) = @_;	830	my ($pl, $name, $params) = @_;
617		831
618	my $cb = $COMMAND{$name}	832	my $cb = $COMMAND{$name}
619	or return;	833	or return;
…		…
629		843
630	my $msg = eval { from_json $buf };	844	my $msg = eval { from_json $buf };
631		845
632	if (ref $msg) {	846	if (ref $msg) {
633	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	847	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
634	if (my %reply = $cb->[0]->($pl, $msg)) {	848	if (my %reply = $cb->($pl, $msg)) {
635	$pl->ext_reply ($msg->{msgid}, %reply);	849	$pl->ext_reply ($msg->{msgid}, %reply);
636	}	850	}
637	}	851	}
638	} else {	852	} else {
639	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	853	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
640	}	854	}
641		855
642	cf::override;	856	cf::override;
643	},	857	},
644	;	858	);
645
646	sub register {
647	my ($base, $pkg) = @_;
648
649	#TODO
650	}
651		859
652	sub load_extension {	860	sub load_extension {
653	my ($path) = @_;	861	my ($path) = @_;
654		862
655	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	863	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
656	my $base = $1;	864	my $base = $1;
657	my $pkg = $1;	865	my $pkg = $1;
658	$pkg =~ s/[^[:word:]]/_/g;	866	$pkg =~ s/[^[:word:]]/_/g;
659	$pkg = "ext::$pkg";	867	$pkg = "ext::$pkg";
660		868
661	warn "loading '$path' into '$pkg'\n";	869	warn "... loading '$path' into '$pkg'\n";
662		870
663	open my $fh, "<:utf8", $path	871	open my $fh, "<:utf8", $path
664	or die "$path: $!";	872	or die "$path: $!";
665		873
666	my $source =	874	my $source =
667	"package $pkg; use strict; use utf8;\n"	875	"package $pkg; use strict; use utf8;\n"
668	. "#line 1 \"$path\"\n{\n"	876	. "#line 1 \"$path\"\n{\n"
669	. (do { local $/; <$fh> })	877	. (do { local $/; <$fh> })
670	. "\n};\n1";	878	. "\n};\n1";
671		879
672	eval $source	880	unless (eval $source) {
673	or die $@ ? "$path: $@\n"	881	my $msg = $@ ? "$path: $@\n"
674	: "extension disabled.\n";	882	: "extension disabled.\n";
675		883	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
676	push @exts, $pkg;	884	warn $@;
677	$ext_pkg{$base} = $pkg;	885	warn "mandatory extension failed to load, exiting.\n";
678		886	exit 1;
679	# no strict 'refs';	887	}
680	# @{"$pkg\::ISA"} = ext::;	888	die $@;
681
682	register $base, $pkg;
683	}
684
685	sub unload_extension {
686	my ($pkg) = @_;
687
688	warn "removing extension $pkg\n";
689
690	# remove hooks
691	#TODO
692	# for my $idx (0 .. $#PLUGIN_EVENT) {
693	# delete $hook[$idx]{$pkg};
694	# }	889	}
695		890
696	# remove commands	891	push @EXTS, $pkg;
697	for my $name (keys %COMMAND) {
698	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
699
700	if (@cb) {
701	$COMMAND{$name} = \@cb;
702	} else {
703	delete $COMMAND{$name};
704	}
705	}
706
707	# remove extcmds
708	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
709	delete $EXTCMD{$name};
710	}
711
712	if (my $cb = $pkg->can ("unload")) {
713	eval {
714	$cb->($pkg);
715	1
716	} or warn "$pkg unloaded, but with errors: $@";
717	}
718
719	Symbol::delete_package $pkg;
720	}	892	}
721		893
722	sub load_extensions {	894	sub load_extensions {
723	my $LIBDIR = maps_directory "perl";
724
725	for my $ext (<$LIBDIR/*.ext>) {	895	for my $ext (<$LIBDIR/*.ext>) {
726	next unless -r $ext;	896	next unless -r $ext;
727	eval {	897	eval {
728	load_extension $ext;	898	load_extension $ext;
729	1	899	1
…		…
741	defined $path or return;	911	defined $path or return;
742		912
743	unlink "$path.pst";	913	unlink "$path.pst";
744	};	914	};
745		915
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	916	cf::map->attach (prio => -10000, package => cf::mapsupport::);
747		917
748	#############################################################################	918	#############################################################################
749	# load/save perl data associated with player->ob objects
750
751	sub all_objects(@) {
752	@_, map all_objects ($_->inv), @_
753	}
754
755	# TODO: compatibility cruft, remove when no longer needed
756	attach_to_players
757	on_load => sub {
758	my ($pl, $path) = @_;
759
760	for my $o (all_objects $pl->ob) {
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {
762	$o->set_ob_key_value ("_perl_data");
763
764	%$o = %{ Storable::thaw pack "H*", $value };
765	}
766	}
767	},
768	;
769
770	#############################################################################
771		919
772	=head2 CORE EXTENSIONS	920	=head2 CORE EXTENSIONS
773		921
774	Functions and methods that extend core crossfire objects.	922	Functions and methods that extend core crossfire objects.
775		923
		924	=cut
		925
		926	package cf::player;
		927
		928	use Coro::AIO;
		929
		930	=head3 cf::player
		931
776	=over 4	932	=over 4
777		933
778	=item cf::player::exists $login	934	=item cf::player::find $login
779		935
780	Returns true when the given account exists.	936	Returns the given player object, loading it if necessary (might block).
781		937
782	=cut	938	=cut
783		939
784	sub cf::player::exists($) {	940	sub playerdir($) {
785	cf::player::find $_[0]	941	cf::localdir
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	942	. "/"
		943	. cf::playerdir
		944	. "/"
		945	. (ref $_[0] ? $_[0]->ob->name : $_[0])
787	}	946	}
		947
		948	sub path($) {
		949	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		950
		951	(playerdir $login) . "/$login.pl"
		952	}
		953
		954	sub find_active($) {
		955	$cf::PLAYER{$_[0]}
		956	and $cf::PLAYER{$_[0]}->active
		957	and $cf::PLAYER{$_[0]}
		958	}
		959
		960	sub exists($) {
		961	my ($login) = @_;
		962
		963	$cf::PLAYER{$login}
		964	or cf::sync_job { !aio_stat $login }
		965	}
		966
		967	sub find($) {
		968	return $cf::PLAYER{$_[0]} || do {
		969	my $login = $_[0];
		970
		971	my $guard = cf::lock_acquire "user_find:$login";
		972
		973	$cf::PLAYER{$_[0]} || do {
		974	my $pl = load_pl path $login
		975	or return;
		976	$cf::PLAYER{$login} = $pl
		977	}
		978	}
		979	}
		980
		981	sub save($) {
		982	my ($pl) = @_;
		983
		984	return if $pl->{deny_save};
		985
		986	my $path = path $pl;
		987	my $guard = cf::lock_acquire "user_save:$path";
		988
		989	return if $pl->{deny_save};
		990
		991	aio_mkdir playerdir $pl, 0770;
		992	$pl->{last_save} = $cf::RUNTIME;
		993
		994	$pl->save_pl ($path);
		995	Coro::cede;
		996	}
		997
		998	sub new($) {
		999	my ($login) = @_;
		1000
		1001	my $self = create;
		1002
		1003	$self->ob->name ($login);
		1004	$self->{deny_save} = 1;
		1005
		1006	$cf::PLAYER{$login} = $self;
		1007
		1008	$self
		1009	}
		1010
		1011	=item $pl->quit_character
		1012
		1013	Nukes the player without looking back. If logged in, the connection will
		1014	be destroyed. May block for a long time.
		1015
		1016	=cut
		1017
		1018	sub quit_character {
		1019	my ($pl) = @_;
		1020
		1021	$pl->{deny_save} = 1;
		1022	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1023
		1024	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1025	$pl->deactivate;
		1026	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1027	$pl->ns->destroy if $pl->ns;
		1028
		1029	my $path = playerdir $pl;
		1030	my $temp = "$path~$cf::RUNTIME~deleting~";
		1031	aio_rename $path, $temp;
		1032	delete $cf::PLAYER{$pl->ob->name};
		1033	$pl->destroy;
		1034	IO::AIO::aio_rmtree $temp;
		1035	}
		1036
		1037	=item cf::player::list_logins
		1038
		1039	Returns am arrayref of all valid playernames in the system, can take a
		1040	while and may block, so not sync_job-capable, ever.
		1041
		1042	=cut
		1043
		1044	sub list_logins {
		1045	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1046	or return [];
		1047
		1048	my @logins;
		1049
		1050	for my $login (@$dirs) {
		1051	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1052	aio_read $fh, 0, 512, my $buf, 0 or next;
		1053	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1054
		1055	utf8::decode $login;
		1056	push @logins, $login;
		1057	}
		1058
		1059	\@logins
		1060	}
		1061
		1062	=item $player->maps
		1063
		1064	Returns an arrayref of map paths that are private for this
		1065	player. May block.
		1066
		1067	=cut
		1068
		1069	sub maps($) {
		1070	my ($pl) = @_;
		1071
		1072	my $files = aio_readdir playerdir $pl
		1073	or return;
		1074
		1075	my @paths;
		1076
		1077	for (@$files) {
		1078	utf8::decode $_;
		1079	next if /\.(?:pl|pst)$/;
		1080	next unless /^$PATH_SEP/o;
		1081
		1082	push @paths, "~" . $pl->ob->name . "/" . $_;
		1083	}
		1084
		1085	\@paths
		1086	}
		1087
		1088	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1089
		1090	Sends an ext reply to the player.
		1091
		1092	=cut
		1093
		1094	sub ext_reply($$$%) {
		1095	my ($self, $id, %msg) = @_;
		1096
		1097	$msg{msgid} = $id;
		1098
		1099	$self->send ("ext " . cf::to_json \%msg);
		1100	}
		1101
		1102	package cf;
		1103
		1104	=back
		1105
		1106
		1107	=head3 cf::map
		1108
		1109	=over 4
		1110
		1111	=cut
		1112
		1113	package cf::map;
		1114
		1115	use Fcntl;
		1116	use Coro::AIO;
		1117
		1118	use overload
		1119	'""' => \&as_string;
		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 normalise {
		1157	my ($path, $base) = @_;
		1158
		1159	# map plan:
		1160	#
		1161	# /! non-realised random map exit (special hack!)
		1162	# {... are special paths that are not being touched
		1163	# ?xxx/... are special absolute paths
		1164	# ?random/... random maps
		1165	# /... normal maps
		1166	# ~user/... per-player map of a specific user
		1167
		1168	$path =~ s/$PATH_SEP/\//go;
		1169
		1170	# treat it as relative path if it starts with
		1171	# something that looks reasonable
		1172	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1173	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1174
		1175	$base =~ s{[^/]+/?$}{};
		1176	$path = "$base/$path";
		1177	}
		1178
		1179	for ($path) {
		1180	redo if s{//}{/};
		1181	redo if s{/\.?/}{/};
		1182	redo if s{/[^/]+/\.\./}{/};
		1183	}
		1184
		1185	$path
		1186	}
		1187
		1188	sub new_from_path {
		1189	my (undef, $path, $base) = @_;
		1190
		1191	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1192
		1193	$path = normalise $path, $base;
		1194
		1195	for my $pkg (keys %EXT_MAP) {
		1196	if ($path =~ $EXT_MAP{$pkg}) {
		1197	my $self = bless cf::map::new, $pkg;
		1198	$self->{path} = $path; $self->path ($path);
		1199	$self->init; # pass $1 etc.
		1200	return $self;
		1201	}
		1202	}
		1203
		1204	Carp::carp "unable to resolve path '$path'.";
		1205	()
		1206	}
		1207
		1208	sub init {
		1209	my ($self) = @_;
		1210
		1211	$self
		1212	}
		1213
		1214	sub as_string {
		1215	my ($self) = @_;
		1216
		1217	"$self->{path}"
		1218	}
		1219
		1220	# the displayed name, this is a one way mapping
		1221	sub visible_name {
		1222	&as_string
		1223	}
		1224
		1225	# escape the /'s in the path
		1226	sub _escaped_path {
		1227	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1228
		1229	$path
		1230	}
		1231
		1232	# the original (read-only) location
		1233	sub load_path {
		1234	my ($self) = @_;
		1235
		1236	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1237	}
		1238
		1239	# the temporary/swap location
		1240	sub save_path {
		1241	my ($self) = @_;
		1242
		1243	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $self->_escaped_path
		1244	}
		1245
		1246	# the unique path, undef == no special unique path
		1247	sub uniq_path {
		1248	my ($self) = @_;
		1249
		1250	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		1251	}
		1252
		1253	# and all this just because we cannot iterate over
		1254	# all maps in C++...
		1255	sub change_all_map_light {
		1256	my ($change) = @_;
		1257
		1258	$_->change_map_light ($change)
		1259	for grep $_->outdoor, values %cf::MAP;
		1260	}
		1261
		1262	sub unlink_save {
		1263	my ($self) = @_;
		1264
		1265	utf8::encode (my $save = $self->save_path);
		1266	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink $save;
		1267	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink "$save.pst";
		1268	}
		1269
		1270	sub load_header_from($) {
		1271	my ($self, $path) = @_;
		1272
		1273	utf8::encode $path;
		1274	aio_open $path, O_RDONLY, 0
		1275	or return;
		1276
		1277	$self->_load_header ($path)
		1278	or return;
		1279
		1280	$self->{load_path} = $path;
		1281
		1282	1
		1283	}
		1284
		1285	sub load_orig {
		1286	my ($self) = @_;
		1287
		1288	$self->load_header_from ($self->load_path)
		1289	}
		1290
		1291	sub load_temp {
		1292	my ($self) = @_;
		1293
		1294	$self->load_header_from ($self->save_path)
		1295	}
		1296
		1297	sub load_header {
		1298	my ($self) = @_;
		1299
		1300	if ($self->load_temp) {
		1301	$self->last_access ((delete $self->{last_access})
		1302	|| $cf::RUNTIME); #d#
		1303	# safety
		1304	$self->{instantiate_time} = $cf::RUNTIME
		1305	if $self->{instantiate_time} > $cf::RUNTIME;
		1306	} else {
		1307	$self->load_orig
		1308	or return;
		1309
		1310	$self->{load_original} = 1;
		1311	$self->{instantiate_time} = $cf::RUNTIME;
		1312	$self->last_access ($cf::RUNTIME);
		1313	$self->instantiate;
		1314	}
		1315
		1316	1
		1317	}
		1318
		1319	sub find;
		1320	sub find {
		1321	my ($path, $origin) = @_;
		1322
		1323	$path = normalise $path, $origin && $origin->path;
		1324
		1325	cf::lock_wait "map_find:$path";
		1326
		1327	$cf::MAP{$path} || do {
		1328	my $guard = cf::lock_acquire "map_find:$path";
		1329	my $map = new_from_path cf::map $path
		1330	or return;
		1331
		1332	$map->{last_save} = $cf::RUNTIME;
		1333
		1334	$map->load_header
		1335	or return;
		1336
		1337	if ($map->should_reset) {
		1338	$map->reset;
		1339	undef $guard;
		1340	$map = find $path
		1341	or return;
		1342	}
		1343
		1344	$cf::MAP{$path} = $map
		1345	}
		1346	}
		1347
		1348	sub load {
		1349	my ($self) = @_;
		1350
		1351	my $path = $self->{path};
		1352	my $guard = cf::lock_acquire "map_load:$path";
		1353
		1354	return if $self->in_memory != cf::MAP_SWAPPED;
		1355
		1356	$self->in_memory (cf::MAP_LOADING);
		1357
		1358	$self->alloc;
		1359	$self->_load_objects ($self->{load_path}, 1)
		1360	or return;
		1361
		1362	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1363	if delete $self->{load_original};
		1364
		1365	if (my $uniq = $self->uniq_path) {
		1366	utf8::encode $uniq;
		1367	if (aio_open $uniq, O_RDONLY, 0) {
		1368	$self->clear_unique_items;
		1369	$self->_load_objects ($uniq, 0);
		1370	}
		1371	}
		1372
		1373	Coro::cede;
		1374
		1375	# now do the right thing for maps
		1376	$self->link_multipart_objects;
		1377
		1378	unless ($self->{deny_activate}) {
		1379	$self->decay_objects;
		1380	$self->fix_auto_apply;
		1381	$self->update_buttons;
		1382	Coro::cede;
		1383	$self->set_darkness_map;
		1384	$self->difficulty ($self->estimate_difficulty)
		1385	unless $self->difficulty;
		1386	Coro::cede;
		1387	$self->activate;
		1388	}
		1389
		1390	$self->in_memory (cf::MAP_IN_MEMORY);
		1391	}
		1392
		1393	sub customise_for {
		1394	my ($self, $ob) = @_;
		1395
		1396	return find "~" . $ob->name . "/" . $self->{path}
		1397	if $self->per_player;
		1398
		1399	$self
		1400	}
		1401
		1402	# find and load all maps in the 3x3 area around a map
		1403	sub load_diag {
		1404	my ($map) = @_;
		1405
		1406	my @diag; # diagonal neighbours
		1407
		1408	for (0 .. 3) {
		1409	my $neigh = $map->tile_path ($_)
		1410	or next;
		1411	$neigh = find $neigh, $map
		1412	or next;
		1413	$neigh->load;
		1414
		1415	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1416	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1417	}
		1418
		1419	for (@diag) {
		1420	my $neigh = find @$_
		1421	or next;
		1422	$neigh->load;
		1423	}
		1424	}
		1425
		1426	sub find_sync {
		1427	my ($path, $origin) = @_;
		1428
		1429	cf::sync_job { find $path, $origin }
		1430	}
		1431
		1432	sub do_load_sync {
		1433	my ($map) = @_;
		1434
		1435	cf::sync_job { $map->load };
		1436	}
		1437
		1438	our %MAP_PREFETCH;
		1439	our $MAP_PREFETCHER = Coro::async {
		1440	while () {
		1441	for my $path (keys %MAP_PREFETCH) {
		1442	my $map = find $path
		1443	or next;
		1444	$map->load;
		1445
		1446	delete $MAP_PREFETCH{$path};
		1447	}
		1448	Coro::schedule;
		1449	}
		1450	};
		1451
		1452	sub find_async {
		1453	my ($path, $origin) = @_;
		1454
		1455	$path = normalise $path, $origin && $origin->{path};
		1456
		1457	if (my $map = $cf::MAP{$path}) {
		1458	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1459	}
		1460
		1461	$MAP_PREFETCH{$path} = 0;
		1462	$MAP_PREFETCHER->ready;
		1463
		1464	()
		1465	}
		1466
		1467	sub save {
		1468	my ($self) = @_;
		1469
		1470	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1471
		1472	$self->{last_save} = $cf::RUNTIME;
		1473
		1474	return unless $self->dirty;
		1475
		1476	my $save = $self->save_path; utf8::encode $save;
		1477	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1478
		1479	$self->{load_path} = $save;
		1480
		1481	return if $self->{deny_save};
		1482
		1483	local $self->{last_access} = $self->last_access;#d#
		1484
		1485	cf::async {
		1486	$_->contr->save for $self->players;
		1487	};
		1488
		1489	if ($uniq) {
		1490	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1491	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1492	} else {
		1493	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1494	}
		1495	}
		1496
		1497	sub swap_out {
		1498	my ($self) = @_;
		1499
		1500	# save first because save cedes
		1501	$self->save;
		1502
		1503	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1504
		1505	return if $self->players;
		1506	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1507	return if $self->{deny_save};
		1508
		1509	$self->clear;
		1510	$self->in_memory (cf::MAP_SWAPPED);
		1511	}
		1512
		1513	sub reset_at {
		1514	my ($self) = @_;
		1515
		1516	# TODO: safety, remove and allow resettable per-player maps
		1517	return 1e99 if $self->isa ("ext::map_per_player");
		1518	return 1e99 if $self->{deny_reset};
		1519
		1520	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1521	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1522
		1523	$time + $to
		1524	}
		1525
		1526	sub should_reset {
		1527	my ($self) = @_;
		1528
		1529	$self->reset_at <= $cf::RUNTIME
		1530	}
		1531
		1532	sub rename {
		1533	my ($self, $new_path) = @_;
		1534
		1535	normalise $new_path;
		1536
		1537	$self->unlink_save;
		1538
		1539	delete $cf::MAP{$self->path};
		1540	$self->{path} = $new_path; $self->path ($self->{path});
		1541	$cf::MAP{$self->path} = $self;
		1542
		1543	$self->save;
		1544	}
		1545
		1546	sub reset {
		1547	my ($self) = @_;
		1548
		1549	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1550
		1551	return if $self->players;
		1552	return if $self->isa ("ext::map_per_player");#d#
		1553
		1554	warn "resetting map ", $self->path;#d#
		1555
		1556	delete $cf::MAP{$self->path};
		1557
		1558	$_->clear_links_to ($self) for values %cf::MAP;
		1559
		1560	$self->unlink_save;
		1561	$self->destroy;
		1562	}
		1563
		1564	my $nuke_counter = "aaaa";
		1565
		1566	sub nuke {
		1567	my ($self) = @_;
		1568
		1569	$self->{deny_save} = 1;
		1570	$self->reset_timeout (1);
		1571	$self->rename ("{nuke}/" . ($nuke_counter++));
		1572	$self->reset; # polite request, might not happen
		1573	}
		1574
		1575	=item cf::map::unique_maps
		1576
		1577	Returns an arrayref of paths of all shared maps that have
		1578	instantiated unique items. May block.
		1579
		1580	=cut
		1581
		1582	sub unique_maps() {
		1583	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1584	or return;
		1585
		1586	my @paths;
		1587
		1588	for (@$files) {
		1589	utf8::decode $_;
		1590	next if /\.pst$/;
		1591	next unless /^$PATH_SEP/o;
		1592
		1593	push @paths, $_;
		1594	}
		1595
		1596	\@paths
		1597	}
		1598
		1599	package cf;
		1600
		1601	=back
		1602
		1603	=head3 cf::object
		1604
		1605	=cut
		1606
		1607	package cf::object;
		1608
		1609	=over 4
		1610
		1611	=item $ob->inv_recursive
		1612
		1613	Returns the inventory of the object _and_ their inventories, recursively.
		1614
		1615	=cut
		1616
		1617	sub inv_recursive_;
		1618	sub inv_recursive_ {
		1619	map { $_, inv_recursive_ $_->inv } @_
		1620	}
		1621
		1622	sub inv_recursive {
		1623	inv_recursive_ inv $_[0]
		1624	}
		1625
		1626	package cf;
		1627
		1628	=back
		1629
		1630	=head3 cf::object::player
		1631
		1632	=over 4
788		1633
789	=item $player_object->reply ($npc, $msg[, $flags])	1634	=item $player_object->reply ($npc, $msg[, $flags])
790		1635
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1636	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
792	can be C<undef>. Does the right thing when the player is currently in a	1637	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		1639
795	=cut	1640	=cut
796		1641
797	# rough implementation of a future "reply" method that works	1642	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	1643	# with dialog boxes.
		1644	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	1645	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	1646	my ($self, $npc, $msg, $flags) = @_;
801		1647
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1648	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		1649
…		…
807	$msg = $npc->name . " says: $msg" if $npc;	1653	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	1654	$self->message ($msg, $flags);
809	}	1655	}
810	}	1656	}
811		1657
812	=item $player->ext_reply ($msgid, $msgtype, %msg)
813
814	Sends an ext reply to the player.
815
816	=cut
817
818	sub cf::player::ext_reply($$$%) {
819	my ($self, $id, %msg) = @_;
820
821	$msg{msgid} = $id;
822
823	$self->send ("ext " . to_json \%msg);
824	}
825
826	=item $player_object->may ("access")	1658	=item $player_object->may ("access")
827		1659
828	Returns wether the given player is authorized to access resource "access"	1660	Returns wether the given player is authorized to access resource "access"
829	(e.g. "command_wizcast").	1661	(e.g. "command_wizcast").
830		1662
…		…
837	(ref $cf::CFG{"may_$access"}	1669	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1670	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	1671	: $cf::CFG{"may_$access"})
840	}	1672	}
841		1673
842	=cut	1674	=item $player_object->enter_link
843		1675
844	#############################################################################	1676	Freezes the player and moves him/her to a special map (C<{link}>).
		1677
		1678	The player should be reasonably safe there for short amounts of time. You
		1679	I<MUST> call C<leave_link> as soon as possible, though.
		1680
		1681	Will never block.
		1682
		1683	=item $player_object->leave_link ($map, $x, $y)
		1684
		1685	Moves the player out of the special C<{link}> map onto the specified
		1686	map. If the map is not valid (or omitted), the player will be moved back
		1687	to the location he/she was before the call to C<enter_link>, or, if that
		1688	fails, to the emergency map position.
		1689
		1690	Might block.
		1691
		1692	=cut
		1693
		1694	sub link_map {
		1695	unless ($LINK_MAP) {
		1696	$LINK_MAP = cf::map::find "{link}"
		1697	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1698	$LINK_MAP->load;
		1699	}
		1700
		1701	$LINK_MAP
		1702	}
		1703
		1704	sub cf::object::player::enter_link {
		1705	my ($self) = @_;
		1706
		1707	$self->deactivate_recursive;
		1708
		1709	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1710
		1711	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1712	if $self->map;
		1713
		1714	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1715	}
		1716
		1717	sub cf::object::player::leave_link {
		1718	my ($self, $map, $x, $y) = @_;
		1719
		1720	my $link_pos = delete $self->{_link_pos};
		1721
		1722	unless ($map) {
		1723	# restore original map position
		1724	($map, $x, $y) = @{ $link_pos || [] };
		1725	$map = cf::map::find $map;
		1726
		1727	unless ($map) {
		1728	($map, $x, $y) = @$EMERGENCY_POSITION;
		1729	$map = cf::map::find $map
		1730	or die "FATAL: cannot load emergency map\n";
		1731	}
		1732	}
		1733
		1734	($x, $y) = (-1, -1)
		1735	unless (defined $x) && (defined $y);
		1736
		1737	# use -1 or undef as default coordinates, not 0, 0
		1738	($x, $y) = ($map->enter_x, $map->enter_y)
		1739	if $x <=0 && $y <= 0;
		1740
		1741	$map->load;
		1742	$map->load_diag;
		1743
		1744	return unless $self->contr->active;
		1745	$self->activate_recursive;
		1746	$self->enter_map ($map, $x, $y);
		1747	}
		1748
		1749	cf::player->attach (
		1750	on_logout => sub {
		1751	my ($pl) = @_;
		1752
		1753	# abort map switching before logout
		1754	if ($pl->ob->{_link_pos}) {
		1755	cf::sync_job {
		1756	$pl->ob->leave_link
		1757	};
		1758	}
		1759	},
		1760	on_login => sub {
		1761	my ($pl) = @_;
		1762
		1763	# try to abort aborted map switching on player login :)
		1764	# should happen only on crashes
		1765	if ($pl->ob->{_link_pos}) {
		1766	$pl->ob->enter_link;
		1767	(async {
		1768	# we need this sleep as the login has a concurrent enter_exit running
		1769	# and this sleep increases chances of the player not ending up in scorn
		1770	$pl->ob->reply (undef,
		1771	"There was an internal problem at your last logout, "
		1772	. "the server will try to bring you to your intended destination in a second.",
		1773	cf::NDI_RED);
		1774	Coro::Timer::sleep 1;
		1775	$pl->ob->leave_link;
		1776	})->prio (2);
		1777	}
		1778	},
		1779	);
		1780
		1781	=item $player_object->goto ($path, $x, $y)
		1782
		1783	=cut
		1784
		1785	sub cf::object::player::goto {
		1786	my ($self, $path, $x, $y) = @_;
		1787
		1788	$self->enter_link;
		1789
		1790	(async {
		1791	my $map = cf::map::find $path;
		1792	$map = $map->customise_for ($self) if $map;
		1793
		1794	# warn "entering ", $map->path, " at ($x, $y)\n"
		1795	# if $map;
		1796
		1797	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1798
		1799	$self->leave_link ($map, $x, $y);
		1800	})->prio (1);
		1801	}
		1802
		1803	=item $player_object->enter_exit ($exit_object)
		1804
		1805	=cut
		1806
		1807	sub parse_random_map_params {
		1808	my ($spec) = @_;
		1809
		1810	my $rmp = { # defaults
		1811	xsize => 10,
		1812	ysize => 10,
		1813	};
		1814
		1815	for (split /\n/, $spec) {
		1816	my ($k, $v) = split /\s+/, $_, 2;
		1817
		1818	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1819	}
		1820
		1821	$rmp
		1822	}
		1823
		1824	sub prepare_random_map {
		1825	my ($exit) = @_;
		1826
		1827	# all this does is basically replace the /! path by
		1828	# a new random map path (?random/...) with a seed
		1829	# that depends on the exit object
		1830
		1831	my $rmp = parse_random_map_params $exit->msg;
		1832
		1833	if ($exit->map) {
		1834	$rmp->{region} = $exit->map->region_name;
		1835	$rmp->{origin_map} = $exit->map->path;
		1836	$rmp->{origin_x} = $exit->x;
		1837	$rmp->{origin_y} = $exit->y;
		1838	}
		1839
		1840	$rmp->{random_seed} ||= $exit->random_seed;
		1841
		1842	my $data = cf::to_json $rmp;
		1843	my $md5 = Digest::MD5::md5_hex $data;
		1844
		1845	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1846	aio_write $fh, 0, (length $data), $data, 0;
		1847
		1848	$exit->slaying ("?random/$md5");
		1849	$exit->msg (undef);
		1850	}
		1851	}
		1852
		1853	sub cf::object::player::enter_exit {
		1854	my ($self, $exit) = @_;
		1855
		1856	return unless $self->type == cf::PLAYER;
		1857
		1858	$self->enter_link;
		1859
		1860	(async {
		1861	$self->deactivate_recursive; # just to be sure
		1862	unless (eval {
		1863	prepare_random_map $exit
		1864	if $exit->slaying eq "/!";
		1865
		1866	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1867	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1868
		1869	1;
		1870	}) {
		1871	$self->message ("Something went wrong deep within the crossfire server. "
		1872	. "I'll try to bring you back to the map you were before. "
		1873	. "Please report this to the dungeon master!",
		1874	cf::NDI_UNIQUE | cf::NDI_RED);
		1875
		1876	warn "ERROR in enter_exit: $@";
		1877	$self->leave_link;
		1878	}
		1879	})->prio (1);
		1880	}
		1881
		1882	=head3 cf::client
		1883
		1884	=over 4
		1885
		1886	=item $client->send_drawinfo ($text, $flags)
		1887
		1888	Sends a drawinfo packet to the client. Circumvents output buffering so
		1889	should not be used under normal circumstances.
		1890
		1891	=cut
		1892
		1893	sub cf::client::send_drawinfo {
		1894	my ($self, $text, $flags) = @_;
		1895
		1896	utf8::encode $text;
		1897	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1898	}
		1899
		1900
		1901	=item $success = $client->query ($flags, "text", \&cb)
		1902
		1903	Queues a query to the client, calling the given callback with
		1904	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1905	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1906
		1907	Queries can fail, so check the return code. Or don't, as queries will become
		1908	reliable at some point in the future.
		1909
		1910	=cut
		1911
		1912	sub cf::client::query {
		1913	my ($self, $flags, $text, $cb) = @_;
		1914
		1915	return unless $self->state == ST_PLAYING
		1916	|| $self->state == ST_SETUP
		1917	|| $self->state == ST_CUSTOM;
		1918
		1919	$self->state (ST_CUSTOM);
		1920
		1921	utf8::encode $text;
		1922	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1923
		1924	$self->send_packet ($self->{query_queue}[0][0])
		1925	if @{ $self->{query_queue} } == 1;
		1926	}
		1927
		1928	cf::client->attach (
		1929	on_reply => sub {
		1930	my ($ns, $msg) = @_;
		1931
		1932	# this weird shuffling is so that direct followup queries
		1933	# get handled first
		1934	my $queue = delete $ns->{query_queue}
		1935	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1936
		1937	(shift @$queue)->[1]->($msg);
		1938
		1939	push @{ $ns->{query_queue} }, @$queue;
		1940
		1941	if (@{ $ns->{query_queue} } == @$queue) {
		1942	if (@$queue) {
		1943	$ns->send_packet ($ns->{query_queue}[0][0]);
		1944	} else {
		1945	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1946	}
		1947	}
		1948	},
		1949	);
		1950
		1951	=item $client->async (\&cb)
		1952
		1953	Create a new coroutine, running the specified callback. The coroutine will
		1954	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1955	or loss of connection).
		1956
		1957	=cut
		1958
		1959	sub cf::client::async {
		1960	my ($self, $cb) = @_;
		1961
		1962	my $coro = &Coro::async ($cb);
		1963
		1964	$coro->on_destroy (sub {
		1965	delete $self->{_coro}{$coro+0};
		1966	});
		1967
		1968	$self->{_coro}{$coro+0} = $coro;
		1969
		1970	$coro
		1971	}
		1972
		1973	cf::client->attach (
		1974	on_destroy => sub {
		1975	my ($ns) = @_;
		1976
		1977	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1978	},
		1979	);
		1980
		1981	=back
		1982
845		1983
846	=head2 SAFE SCRIPTING	1984	=head2 SAFE SCRIPTING
847		1985
848	Functions that provide a safe environment to compile and execute	1986	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	1987	snippets of perl code without them endangering the safety of the server
…		…
864		2002
865	=pod	2003	=pod
866		2004
867	The following fucntions and emthods are available within a safe environment:	2005	The following fucntions and emthods are available within a safe environment:
868		2006
869	cf::object contr pay_amount pay_player	2007	cf::object contr pay_amount pay_player map
870	cf::object::player player	2008	cf::object::player player
871	cf::player peaceful	2009	cf::player peaceful
		2010	cf::map trigger
872		2011
873	=cut	2012	=cut
874		2013
875	for (	2014	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	2015	["cf::object" => qw(contr pay_amount pay_player map)],
877	["cf::object::player" => qw(player)],	2016	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	2017	["cf::player" => qw(peaceful)],
		2018	["cf::map" => qw(trigger)],
879	) {	2019	) {
880	no strict 'refs';	2020	no strict 'refs';
881	my ($pkg, @funs) = @$_;	2021	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2022	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	2023	for @funs;
…		…
999		2139
1000	{	2140	{
1001	my $path = cf::localdir . "/database.pst";	2141	my $path = cf::localdir . "/database.pst";
1002		2142
1003	sub db_load() {	2143	sub db_load() {
1004	warn "loading database $path\n";#d# remove later
1005	$DB = stat $path ? Storable::retrieve $path : { };	2144	$DB = stat $path ? Storable::retrieve $path : { };
1006	}	2145	}
1007		2146
1008	my $pid;	2147	my $pid;
1009		2148
1010	sub db_save() {	2149	sub db_save() {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;	2150	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {	2151	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;	2152	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";	2153	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;	2154	rename "$path~", $path;
…		…
1023	sub db_sync() {	2161	sub db_sync() {
1024	db_save if $dirty;	2162	db_save if $dirty;
1025	undef $dirty;	2163	undef $dirty;
1026	}	2164	}
1027		2165
1028	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2166	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1029	db_sync;	2167	db_sync;
1030	});	2168	});
1031		2169
1032	sub db_dirty() {	2170	sub db_dirty() {
1033	$dirty = 1;	2171	$dirty = 1;
…		…
1047	$DB->{$_[0]} = $_[1];	2185	$DB->{$_[0]} = $_[1];
1048	}	2186	}
1049	db_dirty;	2187	db_dirty;
1050	}	2188	}
1051		2189
1052	attach_global	2190	cf::global->attach (
1053	prio => 10000,	2191	prio => 10000,
1054	on_cleanup => sub {	2192	on_cleanup => sub {
1055	db_sync;	2193	db_sync;
1056	},	2194	},
1057	;	2195	);
1058	}	2196	}
1059		2197
1060	#############################################################################	2198	#############################################################################
1061	# the server's main()	2199	# the server's main()
1062		2200
…		…
1064	open my $fh, "<:utf8", cf::confdir . "/config"	2202	open my $fh, "<:utf8", cf::confdir . "/config"
1065	or return;	2203	or return;
1066		2204
1067	local $/;	2205	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	2206	*CFG = YAML::Syck::Load <$fh>;
		2207
		2208	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2209
		2210	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2211	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2212
		2213	if (exists $CFG{mlockall}) {
		2214	eval {
		2215	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2216	and die "WARNING: m(un)lockall failed: $!\n";
		2217	};
		2218	warn $@ if $@;
		2219	}
1069	}	2220	}
1070		2221
1071	sub main {	2222	sub main {
		2223	# we must not ever block the main coroutine
		2224	local $Coro::idle = sub {
		2225	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2226	async { Event::one_event };
		2227	};
		2228
1072	cfg_load;	2229	cfg_load;
1073	db_load;	2230	db_load;
1074	load_extensions;	2231	load_extensions;
1075	Event::loop;	2232	Event::loop;
1076	}	2233	}
1077		2234
1078	#############################################################################	2235	#############################################################################
1079	# initialisation	2236	# initialisation and cleanup
1080		2237
		2238	# install some emergency cleanup handlers
		2239	BEGIN {
		2240	for my $signal (qw(INT HUP TERM)) {
		2241	Event->signal (
		2242	data => WF_AUTOCANCEL,
		2243	signal => $signal,
		2244	cb => sub {
		2245	cf::cleanup "SIG$signal";
		2246	},
		2247	);
		2248	}
		2249	}
		2250
		2251	sub emergency_save() {
		2252	my $freeze_guard = cf::freeze_mainloop;
		2253
		2254	warn "enter emergency perl save\n";
		2255
		2256	cf::sync_job {
		2257	# use a peculiar iteration method to avoid tripping on perl
		2258	# refcount bugs in for. also avoids problems with players
		2259	# and maps saved/Destroyed asynchronously.
		2260	warn "begin emergency player save\n";
		2261	for my $login (keys %cf::PLAYER) {
		2262	my $pl = $cf::PLAYER{$login} or next;
		2263	$pl->valid or next;
		2264	$pl->save;
		2265	}
		2266	warn "end emergency player save\n";
		2267
		2268	warn "begin emergency map save\n";
		2269	for my $path (keys %cf::MAP) {
		2270	my $map = $cf::MAP{$path} or next;
		2271	$map->valid or next;
		2272	$map->save;
		2273	}
		2274	warn "end emergency map save\n";
		2275	};
		2276
		2277	warn "leave emergency perl save\n";
		2278	}
		2279
1081	sub _perl_reload(&) {	2280	sub reload() {
1082	my ($msg) = @_;	2281	# can/must only be called in main
		2282	if ($Coro::current != $Coro::main) {
		2283	warn "can only reload from main coroutine\n";
		2284	return;
		2285	}
1083		2286
1084	$msg->("reloading...");	2287	warn "reloading...";
		2288
		2289	warn "freezing server";
		2290	my $guard = freeze_mainloop;
		2291	cf::emergency_save;
		2292
		2293	warn "sync database to disk";
		2294	cf::db_sync;
		2295	IO::AIO::flush;
1085		2296
1086	eval {	2297	eval {
		2298	# if anything goes wrong in here, we should simply crash as we already saved
		2299
1087	# cancel all watchers	2300	warn "cancel all watchers";
1088	$_->cancel for Event::all_watchers;	2301	for (Event::all_watchers) {
		2302	$_->cancel if $_->data & WF_AUTOCANCEL;
		2303	}
1089		2304
		2305	warn "cancel all extension coros";
		2306	$_->cancel for values %EXT_CORO;
		2307	%EXT_CORO = ();
		2308
		2309	warn "remove commands";
		2310	%COMMAND = ();
		2311
		2312	warn "remove ext commands";
		2313	%EXTCMD = ();
		2314
1090	# unload all extensions	2315	warn "unload/nuke all extensions";
1091	for (@exts) {	2316	for my $pkg (@EXTS) {
1092	$msg->("unloading <$_>");	2317	warn "... unloading $pkg";
1093	unload_extension $_;	2318
		2319	if (my $cb = $pkg->can ("unload")) {
		2320	eval {
		2321	$cb->($pkg);
		2322	1
		2323	} or warn "$pkg unloaded, but with errors: $@";
1094	}	2324	}
1095		2325
		2326	warn "... nuking $pkg";
		2327	Symbol::delete_package $pkg;
		2328	}
		2329
1096	# unload all modules loaded from $LIBDIR	2330	warn "unload all perl modules loaded from $LIBDIR";
1097	while (my ($k, $v) = each %INC) {	2331	while (my ($k, $v) = each %INC) {
1098	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2332	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1099		2333
1100	$msg->("removing <$k>");	2334	warn "removing <$k>";
1101	delete $INC{$k};	2335	delete $INC{$k};
1102		2336
1103	$k =~ s/\.pm$//;	2337	$k =~ s/\.pm$//;
1104	$k =~ s/\//::/g;	2338	$k =~ s/\//::/g;
1105		2339
…		…
1108	}	2342	}
1109		2343
1110	Symbol::delete_package $k;	2344	Symbol::delete_package $k;
1111	}	2345	}
1112		2346
1113	# sync database to disk
1114	cf::db_sync;
1115
1116	# get rid of safe::, as good as possible	2347	warn "get rid of safe::, as good as possible";
1117	Symbol::delete_package "safe::$_"	2348	Symbol::delete_package "safe::$_"
1118	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2349	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1119		2350
1120	# remove register_script_function callbacks
1121	# TODO
1122
1123	# unload cf.pm "a bit"	2351	warn "unload cf.pm \"a bit\"";
1124	delete $INC{"cf.pm"};	2352	delete $INC{"cf.pm"};
1125		2353
1126	# don't, removes xs symbols, too,	2354	# don't, removes xs symbols, too,
1127	# and global variables created in xs	2355	# and global variables created in xs
1128	#Symbol::delete_package __PACKAGE__;	2356	#Symbol::delete_package __PACKAGE__;
1129		2357
1130	# reload cf.pm
1131	$msg->("reloading cf.pm");	2358	warn "reloading cf.pm";
1132	require cf;	2359	require cf;
		2360	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1133		2361
1134	# load config and database again	2362	warn "load config and database again";
1135	cf::cfg_load;	2363	cf::cfg_load;
1136	cf::db_load;	2364	cf::db_load;
1137		2365
1138	# load extensions	2366	warn "load extensions";
1139	$msg->("load extensions");
1140	cf::load_extensions;	2367	cf::load_extensions;
1141		2368
1142	# reattach attachments to objects	2369	warn "reattach attachments to objects/players";
1143	$msg->("reattach");
1144	_global_reattach;	2370	_global_reattach;
		2371	warn "reattach attachments to maps";
		2372	reattach $_ for values %MAP;
1145	};	2373	};
1146	$msg->($@) if $@;
1147		2374
1148	$msg->("reloaded");	2375	if ($@) {
		2376	warn $@;
		2377	warn "error while reloading, exiting.";
		2378	exit 1;
		2379	}
		2380
		2381	warn "reloaded";
1149	};	2382	};
1150		2383
1151	sub perl_reload() {
1152	_perl_reload {
1153	warn $_[0];
1154	print "$_[0]\n";
1155	};
1156	}
1157
1158	register "<global>", __PACKAGE__;
1159
1160	register_command "perl-reload" => sub {	2384	register_command "reload" => sub {
1161	my ($who, $arg) = @_;	2385	my ($who, $arg) = @_;
1162		2386
1163	if ($who->flag (FLAG_WIZ)) {	2387	if ($who->flag (FLAG_WIZ)) {
1164	_perl_reload {	2388	$who->message ("start of reload.");
1165	warn $_[0];	2389	reload;
1166	$who->message ($_[0]);	2390	$who->message ("end of reload.");
1167	};
1168	}	2391	}
1169	};	2392	};
1170		2393
1171	unshift @INC, $LIBDIR;	2394	unshift @INC, $LIBDIR;
1172		2395
1173	$TICK_WATCHER = Event->timer (	2396	$TICK_WATCHER = Event->timer (
		2397	reentrant => 0,
1174	prio => 1,	2398	prio => 0,
1175	async => 1,
1176	at => $NEXT_TICK || 1,	2399	at => $NEXT_TICK || $TICK,
		2400	data => WF_AUTOCANCEL,
1177	cb => sub {	2401	cb => sub {
		2402	$NOW = Event::time;
		2403
1178	cf::server_tick; # one server iteration	2404	cf::server_tick; # one server iteration
1179		2405	$RUNTIME += $TICK;
1180	my $NOW = Event::time;
1181	$NEXT_TICK += $TICK;	2406	$NEXT_TICK += $TICK;
1182		2407
		2408	$WAIT_FOR_TICK->broadcast;
		2409	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2410
1183	# if we are delayed by four ticks or more, skip them all	2411	# if we are delayed by four ticks or more, skip them all
1184	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2412	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1185		2413
1186	$TICK_WATCHER->at ($NEXT_TICK);	2414	$TICK_WATCHER->at ($NEXT_TICK);
1187	$TICK_WATCHER->start;	2415	$TICK_WATCHER->start;
1188	},	2416	},
1189	);	2417	);
1190		2418
1191	IO::AIO::max_poll_time $TICK * 0.2;	2419	IO::AIO::max_poll_time $TICK * 0.2;
1192		2420
		2421	Event->io (
1193	Event->io (fd => IO::AIO::poll_fileno,	2422	fd => IO::AIO::poll_fileno,
1194	poll => 'r',	2423	poll => 'r',
1195	prio => 5,	2424	prio => 5,
		2425	data => WF_AUTOCANCEL,
1196	cb => \&IO::AIO::poll_cb);	2426	cb => \&IO::AIO::poll_cb,
		2427	);
		2428
		2429	Event->timer (
		2430	data => WF_AUTOCANCEL,
		2431	after => 0,
		2432	interval => 10,
		2433	cb => sub {
		2434	(Coro::unblock_sub {
		2435	write_runtime
		2436	or warn "ERROR: unable to write runtime file: $!";
		2437	})->();
		2438	},
		2439	);
		2440
		2441	END { cf::emergency_save }
1197		2442
1198	1	2443	1
1199		2444

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