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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.89 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.170 by root, Sun Jan 14 02:00:37 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
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		35
23	our %COMMAND = ();	36	our %COMMAND = ();
24	our %COMMAND_TIME = ();	37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	40	our %EXTCMD = ();
26		41	our %EXT_CORO = (); # coroutines bound to extensions
27	_init_vars;	42	our %EXT_MAP = (); # pluggable maps
28		43
29	our @EVENT;	44	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	45	our $LIBDIR = datadir . "/ext";
31		46
32	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
34	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
35		53
36	our %CFG;	54	our %CFG;
37		55
38	our $UPTIME; $UPTIME ||= time;	56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		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;
39		87
40	#############################################################################	88	#############################################################################
41		89
42	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
43		91
44	=over 4	92	=over 4
45		93
46	=item $cf::UPTIME	94	=item $cf::UPTIME
47		95
48	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.
49		102
50	=item $cf::LIBDIR	103	=item $cf::LIBDIR
51		104
52	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
54		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
55	=item $cf::TICK	112	=item $cf::TICK
56		113
57	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
58		115
59	=item %cf::CFG	116	=item %cf::CFG
60		117
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	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.
63		127
64	=back	128	=back
65		129
66	=cut	130	=cut
67		131
68	BEGIN {	132	BEGIN {
69	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
71	$msg .= "\n"	137	$msg .= "\n"
72	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
73		139
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
76	};	141	};
77	}	142	}
78		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';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
80		150
81	# 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
82	# within the Safe compartment.	152	# within the Safe compartment.
83	for my $pkg (qw(	153	for my $pkg (qw(
		154	cf::global cf::attachable
84	cf::object cf::object::player	155	cf::object cf::object::player
85	cf::client cf::player	156	cf::client cf::player
86	cf::arch cf::living	157	cf::arch cf::living
87	cf::map cf::party cf::region	158	cf::map cf::party cf::region
88	)) {	159	)) {
…		…
92		163
93	$Event::DIED = sub {	164	$Event::DIED = sub {
94	warn "error in event callback: @_";	165	warn "error in event callback: @_";
95	};	166	};
96		167
97	my %ext_pkg;
98	my @exts;
99	my @hook;
100
101	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
102		169
103	=over 4	170	=over 4
104		171
		172	=item dumpval $ref
		173
105	=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	}
106		194
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
108		196
109	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
110		198
…		…
126	sub to_json($) {	214	sub to_json($) {
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
128	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
129	}	217	}
130		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
131	=back	370	=back
132		371
133	=cut	372	=cut
134		373
135	#############################################################################	374	#############################################################################
136		375
137	=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+).
138		385
139	=over 4	386	=over 4
140		387
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)	388	=item $attachable->attach ($attachment, key => $value...)
154		389
155	=item $map->detach ($attachment)	390	=item $attachable->detach ($attachment)
156		391
157	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.
158		394
159	=item $bool = $object->attached ($name)	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
160		397
161	=item $bool = $player->attached ($name)	398	$obj->attach (minesweeper => width => 10, height => 10);
162		399
163	=item $bool = $map->attached ($name)	400	=item $bool = $attachable->attached ($name)
164		401
165	Checks wether the named attachment is currently attached to the object.	402	Checks wether the named attachment is currently attached to the object.
166		403
167	=item cf::attach_global ...	404	=item cf::CLASS->attach ...
168		405
169	Attach handlers for global events.	406	=item cf::CLASS->detach ...
170		407
171	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
172	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:
173		442
174	=over 4	443	=over 4
175		444
176	=item prio => $number	445	=item prio => $number
177		446
…		…
179	by another C<prio> setting). Lower priority handlers get executed	448	by another C<prio> setting). Lower priority handlers get executed
180	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
181	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
182	unless you know what you are doing.	451	unless you know what you are doing.
183		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
184	=item on_I<event> => \&cb	459	=item on_I<event> => \&cb
185		460
186	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
187	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
188	handlers are recognised generally depends on the type of object these	463	handlers are recognised generally depends on the type of object these
…		…
197	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
198	object/class are recognised.	473	object/class are recognised.
199		474
200	=back	475	=back
201		476
202	=item cf::attach_to_type $object_type, $subtype, ...	477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
203		479
204	Attach handlers for a specific object type (e.g. TRANSPORT) and	480	cf::object::attachment sockpuppet =>
205	subtype. If C<$subtype> is zero or undef, matches all objects of the given	481	on_skill_attack => sub {
206	type.	482	my ($self, $victim) = @_;
207		483	...
208	=item cf::attach_to_objects ...
209
210	Attach handlers to all objects. Do not use this except for debugging or
211	very rare events, as handlers are (obviously) called for I<all> objects in
212	the game.
213
214	=item cf::attach_to_players ...
215
216	Attach handlers to all players.
217
218	=item cf::attach_to_maps ...
219
220	Attach handlers to all maps.
221
222	=item cf:register_attachment $name, ...
223
224	Register an attachment by name through which objects can refer to this
225	attachment.
226
227	=item cf:register_player_attachment $name, ...
228
229	Register an attachment by name through which players can refer to this
230	attachment.
231
232	=item cf:register_map_attachment $name, ...
233
234	Register an attachment by name through which maps can refer to this
235	attachment.
236
237	=cut
238
239	# the following variables are defined in .xs and must not be re-created
240	our @CB_GLOBAL = (); # registry for all global events
241	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
242	our @CB_PLAYER = ();
243	our @CB_TYPE = (); # registry for type (cf-object class) based events
244	our @CB_MAP = ();
245
246	my %attachment;
247
248	sub _attach_cb($\%$$$) {
249	my ($registry, $undo, $event, $prio, $cb) = @_;
250
251	use sort 'stable';
252
253	$cb = [$prio, $cb];
254
255	@{$registry->[$event]} = sort
256	{ $a->[0] cmp $b->[0] }
257	@{$registry->[$event] || []}, $cb;
258
259	push @{$undo->{cb}}, [$event, $cb];
260	}
261
262	# attach handles attaching event callbacks
263	# the only thing the caller has to do is pass the correct
264	# registry (== where the callback attaches to).
265	sub _attach(\@$@) {
266	my ($registry, $klass, @arg) = @_;
267
268	my $prio = 0;
269
270	my %undo = (
271	registry => $registry,
272	cb => [],
273	);
274
275	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
276
277	while (@arg) {
278	my $type = shift @arg;
279
280	if ($type eq "prio") {
281	$prio = shift @arg;
282
283	} elsif ($type eq "package") {
284	my $pkg = shift @arg;
285
286	while (my ($name, $id) = each %cb_id) {
287	if (my $cb = $pkg->can ($name)) {
288	_attach_cb $registry, %undo, $id, $prio, $cb;
289	}
290	}	484	}
291
292	} elsif (exists $cb_id{$type}) {
293	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
294
295	} elsif (ref $type) {
296	warn "attaching objects not supported, ignoring.\n";
297
298	} else {
299	shift @arg;
300	warn "attach argument '$type' not supported, ignoring.\n";
301	}
302	}
303
304	\%undo
305	}
306
307	sub _attach_attachment {
308	my ($obj, $name, %arg) = @_;
309
310	return if exists $obj->{_attachment}{$name};
311
312	my $res;
313
314	if (my $attach = $attachment{$name}) {
315	my $registry = $obj->registry;
316
317	for (@$attach) {
318	my ($klass, @attach) = @$_;
319	$res = _attach @$registry, $klass, @attach;
320	}
321
322	$obj->{$name} = \%arg;
323	} else {
324	warn "object uses attachment '$name' that is not available, postponing.\n";
325	}
326
327	$obj->{_attachment}{$name} = undef;
328
329	$res->{attachment} = $name;
330	$res
331	}
332
333	*cf::object::attach =
334	*cf::player::attach =
335	*cf::map::attach = sub {
336	my ($obj, $name, %arg) = @_;
337
338	_attach_attachment $obj, $name, %arg;
339	};
340
341	# all those should be optimised
342	*cf::object::detach =
343	*cf::player::detach =
344	*cf::map::detach = sub {
345	my ($obj, $name) = @_;
346
347	delete $obj->{_attachment}{$name};
348	reattach ($obj);
349	};
350
351	*cf::object::attached =
352	*cf::player::attached =
353	*cf::map::attached = sub {
354	my ($obj, $name) = @_;
355
356	exists $obj->{_attachment}{$name}
357	};
358
359	sub attach_global {
360	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
361	}
362
363	sub attach_to_type {
364	my $type = shift;
365	my $subtype = shift;
366
367	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
368	}
369
370	sub attach_to_objects {
371	_attach @CB_OBJECT, KLASS_OBJECT, @_
372	}
373
374	sub attach_to_players {
375	_attach @CB_PLAYER, KLASS_PLAYER, @_
376	}
377
378	sub attach_to_maps {
379	_attach @CB_MAP, KLASS_MAP, @_
380	}
381
382	sub register_attachment {
383	my $name = shift;
384
385	$attachment{$name} = [[KLASS_OBJECT, @_]];
386	}
387
388	sub register_player_attachment {
389	my $name = shift;
390
391	$attachment{$name} = [[KLASS_PLAYER, @_]];
392	}
393
394	sub register_map_attachment {
395	my $name = shift;
396
397	$attachment{$name} = [[KLASS_MAP, @_]];
398	}
399
400	our $override;
401	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
402
403	sub override {
404	$override = 1;
405	@invoke_results = ();
406	}
407
408	sub do_invoke {
409	my $event = shift;
410	my $callbacks = shift;
411
412	@invoke_results = ();
413
414	local $override;
415
416	for (@$callbacks) {
417	eval { &{$_->[1]} };
418
419	if ($@) {
420	warn "$@";
421	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
422	override;
423	}
424
425	return 1 if $override;
426	}
427
428	0	485	}
429	}
430		486
431	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	487	=item $attachable->valid
432
433	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
434
435	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
436
437	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
438
439	Generate a global/object/player/map-specific event with the given arguments.
440
441	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
442	removed in future versions), and there is no public API to access override
443	results (if you must, access C<@cf::invoke_results> directly).
444
445	=back
446
447	=cut
448
449	#############################################################################
450
451	=head2 METHODS VALID FOR ALL CORE OBJECTS
452
453	=over 4
454
455	=item $object->valid, $player->valid, $map->valid
456		488
457	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
458	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
459	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
460	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
461	exception.	493	exception.
462		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
463	=back	684	=back
464		685
465	=cut	686	=cut
466
467	*cf::object::valid =
468	*cf::player::valid =
469	*cf::map::valid = \&cf::_valid;
470		687
471	#############################################################################	688	#############################################################################
472	# object support	689	# object support
473		690
474	sub instantiate {
475	my ($obj, $data) = @_;
476
477	$data = from_json $data;
478
479	for (@$data) {
480	my ($name, $args) = @$_;
481
482	$obj->attach ($name, %{$args || {} });
483	}
484	}
485
486	# basically do the same as instantiate, without calling instantiate
487	sub reattach {	691	sub reattach {
		692	# basically do the same as instantiate, without calling instantiate
488	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
489	my $registry = $obj->registry;	697	my $registry = $obj->registry;
490		698
491	@$registry = ();	699	@$registry = ();
492		700
493	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
494		702
495	for my $name (keys %{ $obj->{_attachment} || {} }) {	703	for my $name (keys %{ $obj->{_attachment} || {} }) {
496	if (my $attach = $attachment{$name}) {	704	if (my $attach = $attachment{$name}) {
497	for (@$attach) {	705	for (@$attach) {
498	my ($klass, @attach) = @$_;	706	my ($klass, @attach) = @$_;
499	_attach @$registry, $klass, @attach;	707	_attach $registry, $klass, @attach;
500	}	708	}
501	} else {	709	} else {
502	warn "object uses attachment '$name' that is not available, postponing.\n";	710	warn "object uses attachment '$name' that is not available, postponing.\n";
503	}	711	}
504	}	712	}
505	}	713	}
506		714
507	sub object_freezer_save {	715	cf::attachable->attach (
508	my ($filename, $rdata, $objs) = @_;
509
510	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;
513
514	if (open my $fh, ">:raw", "$filename~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
522	close $fh;
523	rename "$filename.pst~", "$filename.pst";
524	} else {
525	unlink "$filename.pst";
526	}
527
528	rename "$filename~", $filename;
529	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;
534	unlink "$filename.pst";
535	}
536	}
537
538	sub object_freezer_as_string {
539	my ($rdata, $objs) = @_;
540
541	use Data::Dumper;
542
543	$$rdata . Dumper $objs
544	}
545
546	sub object_thawer_load {
547	my ($filename) = @_;
548
549	local $/;
550
551	my $av;
552
553	#TODO: use sysread etc.
554	if (open my $data, "<:raw:perlio", $filename) {
555	$data = <$data>;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };
558	}
559	return ($data, $av);
560	}
561
562	()
563	}
564
565	attach_to_objects
566	prio => -1000000,	716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
567	on_clone => sub {	729	on_clone => sub {
568	my ($src, $dst) = @_;	730	my ($src, $dst) = @_;
569		731
570	@{$dst->registry} = @{$src->registry};	732	@{$dst->registry} = @{$src->registry};
571		733
572	%$dst = %$src;	734	%$dst = %$src;
573		735
574	%{$dst->{_attachment}} = %{$src->{_attachment}}	736	%{$dst->{_attachment}} = %{$src->{_attachment}}
575	if exists $src->{_attachment};	737	if exists $src->{_attachment};
576	},	738	},
577	;	739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$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	}
578		805
579	#############################################################################	806	#############################################################################
580	# command handling &c	807	# command handling &c
581		808
582	=item cf::register_command $name => \&callback($ob,$args);	809	=item cf::register_command $name => \&callback($ob,$args);
…		…
605	=cut	832	=cut
606		833
607	sub register_extcmd {	834	sub register_extcmd {
608	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
609		836
610	my $caller = caller;
611	#warn "registering extcmd '$name' to '$caller'";
612
613	$EXTCMD{$name} = [$cb, $caller];	837	$EXTCMD{$name} = $cb;
614	}	838	}
615		839
616	attach_to_players	840	cf::player->attach (
617	on_command => sub {	841	on_command => sub {
618	my ($pl, $name, $params) = @_;	842	my ($pl, $name, $params) = @_;
619		843
620	my $cb = $COMMAND{$name}	844	my $cb = $COMMAND{$name}
621	or return;	845	or return;
…		…
631		855
632	my $msg = eval { from_json $buf };	856	my $msg = eval { from_json $buf };
633		857
634	if (ref $msg) {	858	if (ref $msg) {
635	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
636	if (my %reply = $cb->[0]->($pl, $msg)) {	860	if (my %reply = $cb->($pl, $msg)) {
637	$pl->ext_reply ($msg->{msgid}, %reply);	861	$pl->ext_reply ($msg->{msgid}, %reply);
638	}	862	}
639	}	863	}
640	} else {	864	} else {
641	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
642	}	866	}
643		867
644	cf::override;	868	cf::override;
645	},	869	},
646	;	870	);
647
648	sub register {
649	my ($base, $pkg) = @_;
650
651	#TODO
652	}
653		871
654	sub load_extension {	872	sub load_extension {
655	my ($path) = @_;	873	my ($path) = @_;
656		874
657	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
658	my $base = $1;	876	my $base = $1;
659	my $pkg = $1;	877	my $pkg = $1;
660	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
661	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
662		880
663	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
664		882
665	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
666	or die "$path: $!";	884	or die "$path: $!";
667		885
668	my $source =	886	my $source =
669	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
670	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
671	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
672	. "\n};\n1";	890	. "\n};\n1";
673		891
674	eval $source	892	unless (eval $source) {
675	or die $@ ? "$path: $@\n"	893	my $msg = $@ ? "$path: $@\n"
676	: "extension disabled.\n";	894	: "extension disabled.\n";
677		895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
678	push @exts, $pkg;	896	warn $@;
679	$ext_pkg{$base} = $pkg;	897	warn "mandatory extension failed to load, exiting.\n";
680		898	exit 1;
681	# no strict 'refs';	899	}
682	# @{"$pkg\::ISA"} = ext::;	900	die $@;
683
684	register $base, $pkg;
685	}
686
687	sub unload_extension {
688	my ($pkg) = @_;
689
690	warn "removing extension $pkg\n";
691
692	# remove hooks
693	#TODO
694	# for my $idx (0 .. $#PLUGIN_EVENT) {
695	# delete $hook[$idx]{$pkg};
696	# }	901	}
697		902
698	# remove commands	903	push @EXTS, $pkg;
699	for my $name (keys %COMMAND) {
700	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
701
702	if (@cb) {
703	$COMMAND{$name} = \@cb;
704	} else {
705	delete $COMMAND{$name};
706	}
707	}
708
709	# remove extcmds
710	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
711	delete $EXTCMD{$name};
712	}
713
714	if (my $cb = $pkg->can ("unload")) {
715	eval {
716	$cb->($pkg);
717	1
718	} or warn "$pkg unloaded, but with errors: $@";
719	}
720
721	Symbol::delete_package $pkg;
722	}	904	}
723		905
724	sub load_extensions {	906	sub load_extensions {
725	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
726	next unless -r $ext;	908	next unless -r $ext;
…		…
730	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
731	}	913	}
732	}	914	}
733		915
734	#############################################################################	916	#############################################################################
735	# load/save/clean perl data associated with a map
736		917
737	*cf::mapsupport::on_clean = sub {	918	=head2 CORE EXTENSIONS
		919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		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} = $pl
		975	}
		976	}
		977	}
		978
		979	sub save($) {
		980	my ($pl) = @_;
		981
		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
		1120	our $MAX_RESET = 3600;
		1121	our $DEFAULT_RESET = 3000;
		1122
		1123	sub generate_random_map {
		1124	my ($self, $rmp) = @_;
		1125
		1126	# mit "rum" bekleckern, nicht
		1127	$self->_create_random_map (
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region}), $rmp->{custom}
		1139	)
		1140	}
		1141
		1142	sub register {
		1143	my (undef, $regex) = @_;
		1144	my $pkg = caller;
		1145
		1146	no strict;
		1147	push @{"$pkg\::ISA"}, __PACKAGE__;
		1148
		1149	$EXT_MAP{$pkg} = qr<$regex>;
		1150	}
		1151
		1152	# also paths starting with '/'
		1153	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1154
		1155	sub thawer_merge {
		1156	# we have to keep some variables in memory intact
		1157	local $_[0]{path};
		1158	local $_[0]{deny_save};
		1159	local $_[0]{deny_reset};
		1160
		1161	$_[0]->SUPER::thawer_merge ($_[1]);
		1162	}
		1163
		1164	sub normalise {
		1165	my ($path, $base) = @_;
		1166
		1167	# map plan:
		1168	#
		1169	# /! non-realised random map exit (special hack!)
		1170	# {... are special paths that are not being touched
		1171	# ?xxx/... are special absolute paths
		1172	# ?random/... random maps
		1173	# /... normal maps
		1174	# ~user/... per-player map of a specific user
		1175
		1176	$path =~ s/$PATH_SEP/\//go;
		1177
		1178	# treat it as relative path if it starts with
		1179	# something that looks reasonable
		1180	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1181	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1182
		1183	$base =~ s{[^/]+/?$}{};
		1184	$path = "$base/$path";
		1185	}
		1186
		1187	for ($path) {
		1188	redo if s{//}{/};
		1189	redo if s{/\.?/}{/};
		1190	redo if s{/[^/]+/\.\./}{/};
		1191	}
		1192
		1193	$path
		1194	}
		1195
		1196	sub new_from_path {
		1197	my (undef, $path, $base) = @_;
		1198
		1199	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1200
		1201	$path = normalise $path, $base;
		1202
		1203	for my $pkg (keys %EXT_MAP) {
		1204	if ($path =~ $EXT_MAP{$pkg}) {
		1205	my $self = bless cf::map::new, $pkg;
		1206	$self->{path} = $path; $self->path ($path);
		1207	$self->init; # pass $1 etc.
		1208	return $self;
		1209	}
		1210	}
		1211
		1212	Carp::carp "unable to resolve path '$path'.";
		1213	()
		1214	}
		1215
		1216	sub init {
		1217	my ($self) = @_;
		1218
		1219	$self
		1220	}
		1221
		1222	sub as_string {
		1223	my ($self) = @_;
		1224
		1225	"$self->{path}"
		1226	}
		1227
		1228	# the displayed name, this is a one way mapping
		1229	sub visible_name {
		1230	&as_string
		1231	}
		1232
		1233	# the original (read-only) location
		1234	sub load_path {
		1235	my ($self) = @_;
		1236
		1237	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1238	}
		1239
		1240	# the temporary/swap location
		1241	sub save_path {
		1242	my ($self) = @_;
		1243
		1244	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1245	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1246	}
		1247
		1248	# the unique path, undef == no special unique path
		1249	sub uniq_path {
		1250	my ($self) = @_;
		1251
		1252	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1253	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1254	}
		1255
		1256	# and all this just because we cannot iterate over
		1257	# all maps in C++...
		1258	sub change_all_map_light {
		1259	my ($change) = @_;
		1260
		1261	$_->change_map_light ($change)
		1262	for grep $_->outdoor, values %cf::MAP;
		1263	}
		1264
		1265	sub unlink_save {
		1266	my ($self) = @_;
		1267
		1268	utf8::encode (my $save = $self->save_path);
		1269	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1270	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1271	}
		1272
		1273	sub load_header_from($) {
		1274	my ($self, $path) = @_;
		1275
		1276	utf8::encode $path;
		1277	aio_open $path, O_RDONLY, 0
		1278	or return;
		1279
		1280	$self->_load_header ($path)
		1281	or return;
		1282
		1283	$self->{load_path} = $path;
		1284
		1285	1
		1286	}
		1287
		1288	sub load_orig {
		1289	my ($self) = @_;
		1290
		1291	$self->load_header_from ($self->load_path)
		1292	}
		1293
		1294	sub load_temp {
		1295	my ($self) = @_;
		1296
		1297	$self->load_header_from ($self->save_path)
		1298	}
		1299
		1300	sub load_header {
		1301	my ($self) = @_;
		1302
		1303	if ($self->load_temp) {
		1304	$self->last_access ((delete $self->{last_access})
		1305	|| $cf::RUNTIME); #d#
		1306	# safety
		1307	$self->{instantiate_time} = $cf::RUNTIME
		1308	if $self->{instantiate_time} > $cf::RUNTIME;
		1309	} else {
		1310	$self->load_orig
		1311	or return;
		1312
		1313	$self->{load_original} = 1;
		1314	$self->{instantiate_time} = $cf::RUNTIME;
		1315	$self->last_access ($cf::RUNTIME);
		1316	$self->instantiate;
		1317	}
		1318
		1319	1
		1320	}
		1321
		1322	sub find;
		1323	sub find {
		1324	my ($path, $origin) = @_;
		1325
		1326	$path = normalise $path, $origin && $origin->path;
		1327
		1328	cf::lock_wait "map_find:$path";
		1329
		1330	$cf::MAP{$path} || do {
		1331	my $guard = cf::lock_acquire "map_find:$path";
		1332	my $map = new_from_path cf::map $path
		1333	or return;
		1334
		1335	$map->{last_save} = $cf::RUNTIME;
		1336
		1337	$map->load_header
		1338	or return;
		1339
		1340	if ($map->should_reset) {
		1341	$map->reset;
		1342	undef $guard;
		1343	$map = find $path
		1344	or return;
		1345	}
		1346
		1347	$cf::MAP{$path} = $map
		1348	}
		1349	}
		1350
		1351	sub load {
		1352	my ($self) = @_;
		1353
		1354	my $path = $self->{path};
		1355	my $guard = cf::lock_acquire "map_load:$path";
		1356
		1357	return if $self->in_memory != cf::MAP_SWAPPED;
		1358
		1359	$self->in_memory (cf::MAP_LOADING);
		1360
		1361	$self->alloc;
		1362	$self->_load_objects ($self->{load_path}, 1)
		1363	or return;
		1364
		1365	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1366	if delete $self->{load_original};
		1367
		1368	if (my $uniq = $self->uniq_path) {
		1369	utf8::encode $uniq;
		1370	if (aio_open $uniq, O_RDONLY, 0) {
		1371	$self->clear_unique_items;
		1372	$self->_load_objects ($uniq, 0);
		1373	}
		1374	}
		1375
		1376	Coro::cede;
		1377
		1378	# now do the right thing for maps
		1379	$self->link_multipart_objects;
		1380
		1381	unless ($self->{deny_activate}) {
		1382	$self->decay_objects;
		1383	$self->fix_auto_apply;
		1384	$self->update_buttons;
		1385	Coro::cede;
		1386	$self->set_darkness_map;
		1387	$self->difficulty ($self->estimate_difficulty)
		1388	unless $self->difficulty;
		1389	Coro::cede;
		1390	$self->activate;
		1391	}
		1392
		1393	$self->in_memory (cf::MAP_IN_MEMORY);
		1394	}
		1395
		1396	sub customise_for {
		1397	my ($self, $ob) = @_;
		1398
		1399	return find "~" . $ob->name . "/" . $self->{path}
		1400	if $self->per_player;
		1401
		1402	$self
		1403	}
		1404
		1405	# find and load all maps in the 3x3 area around a map
		1406	sub load_diag {
738	my ($map) = @_;	1407	my ($map) = @_;
739		1408
740	my $path = $map->tmpname;	1409	my @diag; # diagonal neighbours
741	defined $path or return;
742		1410
743	unlink "$path.pst";	1411	for (0 .. 3) {
		1412	my $neigh = $map->tile_path ($_)
		1413	or next;
		1414	$neigh = find $neigh, $map
		1415	or next;
		1416	$neigh->load;
		1417
		1418	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1419	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1420	}
		1421
		1422	for (@diag) {
		1423	my $neigh = find @$_
		1424	or next;
		1425	$neigh->load;
		1426	}
		1427	}
		1428
		1429	sub find_sync {
		1430	my ($path, $origin) = @_;
		1431
		1432	cf::sync_job { find $path, $origin }
		1433	}
		1434
		1435	sub do_load_sync {
		1436	my ($map) = @_;
		1437
		1438	cf::sync_job { $map->load };
		1439	}
		1440
		1441	our %MAP_PREFETCH;
		1442	our $MAP_PREFETCHER = Coro::async {
		1443	while () {
		1444	for my $path (keys %MAP_PREFETCH) {
		1445	my $map = find $path
		1446	or next;
		1447	$map->load;
		1448
		1449	delete $MAP_PREFETCH{$path};
		1450	}
		1451	Coro::schedule;
		1452	}
744	};	1453	};
745		1454
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	1455	sub find_async {
		1456	my ($path, $origin) = @_;
747		1457
748	#############################################################################	1458	$path = normalise $path, $origin && $origin->{path};
749	# load/save perl data associated with player->ob objects
750		1459
751	sub all_objects(@) {	1460	if (my $map = $cf::MAP{$path}) {
752	@_, map all_objects ($_->inv), @_	1461	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
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	},	1462	}
768	;
769		1463
770	#############################################################################	1464	$MAP_PREFETCH{$path} = 0;
		1465	$MAP_PREFETCHER->ready;
771		1466
772	=head2 CORE EXTENSIONS	1467	()
		1468	}
773		1469
774	Functions and methods that extend core crossfire objects.	1470	sub save {
		1471	my ($self) = @_;
		1472
		1473	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1474
		1475	$self->{last_save} = $cf::RUNTIME;
		1476
		1477	return unless $self->dirty;
		1478
		1479	my $save = $self->save_path; utf8::encode $save;
		1480	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1481
		1482	$self->{load_path} = $save;
		1483
		1484	return if $self->{deny_save};
		1485
		1486	local $self->{last_access} = $self->last_access;#d#
		1487
		1488	cf::async {
		1489	$_->contr->save for $self->players;
		1490	};
		1491
		1492	if ($uniq) {
		1493	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1494	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1495	} else {
		1496	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1497	}
		1498	}
		1499
		1500	sub swap_out {
		1501	my ($self) = @_;
		1502
		1503	# save first because save cedes
		1504	$self->save;
		1505
		1506	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1507
		1508	return if $self->players;
		1509	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1510	return if $self->{deny_save};
		1511
		1512	$self->clear;
		1513	$self->in_memory (cf::MAP_SWAPPED);
		1514	}
		1515
		1516	sub reset_at {
		1517	my ($self) = @_;
		1518
		1519	# TODO: safety, remove and allow resettable per-player maps
		1520	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1521	return 1e99 if $self->{deny_reset};
		1522
		1523	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1524	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1525
		1526	$time + $to
		1527	}
		1528
		1529	sub should_reset {
		1530	my ($self) = @_;
		1531
		1532	$self->reset_at <= $cf::RUNTIME
		1533	}
		1534
		1535	sub rename {
		1536	my ($self, $new_path) = @_;
		1537
		1538	normalise $new_path;
		1539
		1540	$self->unlink_save;
		1541
		1542	delete $cf::MAP{$self->path};
		1543	$self->{path} = $new_path; $self->path ($self->{path});
		1544	$cf::MAP{$self->path} = $self;
		1545
		1546	$self->save;
		1547	}
		1548
		1549	sub reset {
		1550	my ($self) = @_;
		1551
		1552	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1553
		1554	return if $self->players;
		1555	return if $self->isa ("ext::map_per_player");#d#
		1556
		1557	warn "resetting map ", $self->path;#d#
		1558
		1559	delete $cf::MAP{$self->path};
		1560
		1561	$self->in_memory (cf::MAP_SWAPPED);
		1562	$self->clear;
		1563
		1564	$_->clear_links_to ($self) for values %cf::MAP;
		1565
		1566	$self->unlink_save;
		1567	$self->destroy;
		1568	}
		1569
		1570	my $nuke_counter = "aaaa";
		1571
		1572	sub nuke {
		1573	my ($self) = @_;
		1574
		1575	$self->{deny_save} = 1;
		1576	$self->reset_timeout (1);
		1577	$self->rename ("{nuke}/" . ($nuke_counter++));
		1578	$self->reset; # polite request, might not happen
		1579	}
		1580
		1581	=item cf::map::unique_maps
		1582
		1583	Returns an arrayref of paths of all shared maps that have
		1584	instantiated unique items. May block.
		1585
		1586	=cut
		1587
		1588	sub unique_maps() {
		1589	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1590	or return;
		1591
		1592	my @paths;
		1593
		1594	for (@$files) {
		1595	utf8::decode $_;
		1596	next if /\.pst$/;
		1597	next unless /^$PATH_SEP/o;
		1598
		1599	s/\.map$//;
		1600	push @paths, $_;
		1601	}
		1602
		1603	\@paths
		1604	}
		1605
		1606	package cf;
		1607
		1608	=back
		1609
		1610	=head3 cf::object
		1611
		1612	=cut
		1613
		1614	package cf::object;
775		1615
776	=over 4	1616	=over 4
777		1617
778	=item cf::player::exists $login	1618	=item $ob->inv_recursive
779		1619
780	Returns true when the given account exists.	1620	Returns the inventory of the object _and_ their inventories, recursively.
781		1621
782	=cut	1622	=cut
783		1623
784	sub cf::player::exists($) {	1624	sub inv_recursive_;
785	cf::player::find $_[0]	1625	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1626	map { $_, inv_recursive_ $_->inv } @_
787	}	1627	}
		1628
		1629	sub inv_recursive {
		1630	inv_recursive_ inv $_[0]
		1631	}
		1632
		1633	package cf;
		1634
		1635	=back
		1636
		1637	=head3 cf::object::player
		1638
		1639	=over 4
788		1640
789	=item $player_object->reply ($npc, $msg[, $flags])	1641	=item $player_object->reply ($npc, $msg[, $flags])
790		1642
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1643	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	1644	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		1646
795	=cut	1647	=cut
796		1648
797	# rough implementation of a future "reply" method that works	1649	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	1650	# with dialog boxes.
		1651	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	1652	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	1653	my ($self, $npc, $msg, $flags) = @_;
801		1654
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1655	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		1656
…		…
807	$msg = $npc->name . " says: $msg" if $npc;	1660	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	1661	$self->message ($msg, $flags);
809	}	1662	}
810	}	1663	}
811		1664
812	=item $player->ext_reply ($msgid, $msgtype, %msg)
813
814	Sends an ext reply to the player.
815
816	=cut
817
818	sub cf::player::ext_reply($$$%) {
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")	1665	=item $player_object->may ("access")
827		1666
828	Returns wether the given player is authorized to access resource "access"	1667	Returns wether the given player is authorized to access resource "access"
829	(e.g. "command_wizcast").	1668	(e.g. "command_wizcast").
830		1669
…		…
837	(ref $cf::CFG{"may_$access"}	1676	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1677	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	1678	: $cf::CFG{"may_$access"})
840	}	1679	}
841		1680
842	=cut	1681	=item $player_object->enter_link
843		1682
844	#############################################################################	1683	Freezes the player and moves him/her to a special map (C<{link}>).
		1684
		1685	The player should be reasonably safe there for short amounts of time. You
		1686	I<MUST> call C<leave_link> as soon as possible, though.
		1687
		1688	Will never block.
		1689
		1690	=item $player_object->leave_link ($map, $x, $y)
		1691
		1692	Moves the player out of the special C<{link}> map onto the specified
		1693	map. If the map is not valid (or omitted), the player will be moved back
		1694	to the location he/she was before the call to C<enter_link>, or, if that
		1695	fails, to the emergency map position.
		1696
		1697	Might block.
		1698
		1699	=cut
		1700
		1701	sub link_map {
		1702	unless ($LINK_MAP) {
		1703	$LINK_MAP = cf::map::find "{link}"
		1704	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1705	$LINK_MAP->load;
		1706	}
		1707
		1708	$LINK_MAP
		1709	}
		1710
		1711	sub cf::object::player::enter_link {
		1712	my ($self) = @_;
		1713
		1714	$self->deactivate_recursive;
		1715
		1716	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1717
		1718	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1719	if $self->map;
		1720
		1721	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1722	}
		1723
		1724	sub cf::object::player::leave_link {
		1725	my ($self, $map, $x, $y) = @_;
		1726
		1727	my $link_pos = delete $self->{_link_pos};
		1728
		1729	unless ($map) {
		1730	# restore original map position
		1731	($map, $x, $y) = @{ $link_pos || [] };
		1732	$map = cf::map::find $map;
		1733
		1734	unless ($map) {
		1735	($map, $x, $y) = @$EMERGENCY_POSITION;
		1736	$map = cf::map::find $map
		1737	or die "FATAL: cannot load emergency map\n";
		1738	}
		1739	}
		1740
		1741	($x, $y) = (-1, -1)
		1742	unless (defined $x) && (defined $y);
		1743
		1744	# use -1 or undef as default coordinates, not 0, 0
		1745	($x, $y) = ($map->enter_x, $map->enter_y)
		1746	if $x <=0 && $y <= 0;
		1747
		1748	$map->load;
		1749	$map->load_diag;
		1750
		1751	return unless $self->contr->active;
		1752	$self->activate_recursive;
		1753	$self->enter_map ($map, $x, $y);
		1754	}
		1755
		1756	cf::player->attach (
		1757	on_logout => sub {
		1758	my ($pl) = @_;
		1759
		1760	# abort map switching before logout
		1761	if ($pl->ob->{_link_pos}) {
		1762	cf::sync_job {
		1763	$pl->ob->leave_link
		1764	};
		1765	}
		1766	},
		1767	on_login => sub {
		1768	my ($pl) = @_;
		1769
		1770	# try to abort aborted map switching on player login :)
		1771	# should happen only on crashes
		1772	if ($pl->ob->{_link_pos}) {
		1773	$pl->ob->enter_link;
		1774	(async {
		1775	# we need this sleep as the login has a concurrent enter_exit running
		1776	# and this sleep increases chances of the player not ending up in scorn
		1777	$pl->ob->reply (undef,
		1778	"There was an internal problem at your last logout, "
		1779	. "the server will try to bring you to your intended destination in a second.",
		1780	cf::NDI_RED);
		1781	Coro::Timer::sleep 1;
		1782	$pl->ob->leave_link;
		1783	})->prio (2);
		1784	}
		1785	},
		1786	);
		1787
		1788	=item $player_object->goto ($path, $x, $y)
		1789
		1790	=cut
		1791
		1792	sub cf::object::player::goto {
		1793	my ($self, $path, $x, $y) = @_;
		1794
		1795	$self->enter_link;
		1796
		1797	(async {
		1798	my $map = cf::map::find $path;
		1799	$map = $map->customise_for ($self) if $map;
		1800
		1801	# warn "entering ", $map->path, " at ($x, $y)\n"
		1802	# if $map;
		1803
		1804	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1805
		1806	$self->leave_link ($map, $x, $y);
		1807	})->prio (1);
		1808	}
		1809
		1810	=item $player_object->enter_exit ($exit_object)
		1811
		1812	=cut
		1813
		1814	sub parse_random_map_params {
		1815	my ($spec) = @_;
		1816
		1817	my $rmp = { # defaults
		1818	xsize => 10,
		1819	ysize => 10,
		1820	};
		1821
		1822	for (split /\n/, $spec) {
		1823	my ($k, $v) = split /\s+/, $_, 2;
		1824
		1825	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1826	}
		1827
		1828	$rmp
		1829	}
		1830
		1831	sub prepare_random_map {
		1832	my ($exit) = @_;
		1833
		1834	# all this does is basically replace the /! path by
		1835	# a new random map path (?random/...) with a seed
		1836	# that depends on the exit object
		1837
		1838	my $rmp = parse_random_map_params $exit->msg;
		1839
		1840	if ($exit->map) {
		1841	$rmp->{region} = $exit->map->region_name;
		1842	$rmp->{origin_map} = $exit->map->path;
		1843	$rmp->{origin_x} = $exit->x;
		1844	$rmp->{origin_y} = $exit->y;
		1845	}
		1846
		1847	$rmp->{random_seed} ||= $exit->random_seed;
		1848
		1849	my $data = cf::to_json $rmp;
		1850	my $md5 = Digest::MD5::md5_hex $data;
		1851
		1852	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1853	aio_write $fh, 0, (length $data), $data, 0;
		1854
		1855	$exit->slaying ("?random/$md5");
		1856	$exit->msg (undef);
		1857	}
		1858	}
		1859
		1860	sub cf::object::player::enter_exit {
		1861	my ($self, $exit) = @_;
		1862
		1863	return unless $self->type == cf::PLAYER;
		1864
		1865	$self->enter_link;
		1866
		1867	(async {
		1868	$self->deactivate_recursive; # just to be sure
		1869	unless (eval {
		1870	prepare_random_map $exit
		1871	if $exit->slaying eq "/!";
		1872
		1873	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1874	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1875
		1876	1;
		1877	}) {
		1878	$self->message ("Something went wrong deep within the crossfire server. "
		1879	. "I'll try to bring you back to the map you were before. "
		1880	. "Please report this to the dungeon master!",
		1881	cf::NDI_UNIQUE | cf::NDI_RED);
		1882
		1883	warn "ERROR in enter_exit: $@";
		1884	$self->leave_link;
		1885	}
		1886	})->prio (1);
		1887	}
		1888
		1889	=head3 cf::client
		1890
		1891	=over 4
		1892
		1893	=item $client->send_drawinfo ($text, $flags)
		1894
		1895	Sends a drawinfo packet to the client. Circumvents output buffering so
		1896	should not be used under normal circumstances.
		1897
		1898	=cut
		1899
		1900	sub cf::client::send_drawinfo {
		1901	my ($self, $text, $flags) = @_;
		1902
		1903	utf8::encode $text;
		1904	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1905	}
		1906
		1907
		1908	=item $success = $client->query ($flags, "text", \&cb)
		1909
		1910	Queues a query to the client, calling the given callback with
		1911	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1912	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1913
		1914	Queries can fail, so check the return code. Or don't, as queries will become
		1915	reliable at some point in the future.
		1916
		1917	=cut
		1918
		1919	sub cf::client::query {
		1920	my ($self, $flags, $text, $cb) = @_;
		1921
		1922	return unless $self->state == ST_PLAYING
		1923	|| $self->state == ST_SETUP
		1924	|| $self->state == ST_CUSTOM;
		1925
		1926	$self->state (ST_CUSTOM);
		1927
		1928	utf8::encode $text;
		1929	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1930
		1931	$self->send_packet ($self->{query_queue}[0][0])
		1932	if @{ $self->{query_queue} } == 1;
		1933	}
		1934
		1935	cf::client->attach (
		1936	on_reply => sub {
		1937	my ($ns, $msg) = @_;
		1938
		1939	# this weird shuffling is so that direct followup queries
		1940	# get handled first
		1941	my $queue = delete $ns->{query_queue}
		1942	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1943
		1944	(shift @$queue)->[1]->($msg);
		1945
		1946	push @{ $ns->{query_queue} }, @$queue;
		1947
		1948	if (@{ $ns->{query_queue} } == @$queue) {
		1949	if (@$queue) {
		1950	$ns->send_packet ($ns->{query_queue}[0][0]);
		1951	} else {
		1952	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1953	}
		1954	}
		1955	},
		1956	);
		1957
		1958	=item $client->async (\&cb)
		1959
		1960	Create a new coroutine, running the specified callback. The coroutine will
		1961	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1962	or loss of connection).
		1963
		1964	=cut
		1965
		1966	sub cf::client::async {
		1967	my ($self, $cb) = @_;
		1968
		1969	my $coro = &Coro::async ($cb);
		1970
		1971	$coro->on_destroy (sub {
		1972	delete $self->{_coro}{$coro+0};
		1973	});
		1974
		1975	$self->{_coro}{$coro+0} = $coro;
		1976
		1977	$coro
		1978	}
		1979
		1980	cf::client->attach (
		1981	on_destroy => sub {
		1982	my ($ns) = @_;
		1983
		1984	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1985	},
		1986	);
		1987
		1988	=back
		1989
845		1990
846	=head2 SAFE SCRIPTING	1991	=head2 SAFE SCRIPTING
847		1992
848	Functions that provide a safe environment to compile and execute	1993	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	1994	snippets of perl code without them endangering the safety of the server
…		…
864		2009
865	=pod	2010	=pod
866		2011
867	The following fucntions and emthods are available within a safe environment:	2012	The following fucntions and emthods are available within a safe environment:
868		2013
869	cf::object contr pay_amount pay_player	2014	cf::object contr pay_amount pay_player map
870	cf::object::player player	2015	cf::object::player player
871	cf::player peaceful	2016	cf::player peaceful
		2017	cf::map trigger
872		2018
873	=cut	2019	=cut
874		2020
875	for (	2021	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	2022	["cf::object" => qw(contr pay_amount pay_player map)],
877	["cf::object::player" => qw(player)],	2023	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	2024	["cf::player" => qw(peaceful)],
		2025	["cf::map" => qw(trigger)],
879	) {	2026	) {
880	no strict 'refs';	2027	no strict 'refs';
881	my ($pkg, @funs) = @$_;	2028	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2029	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	2030	for @funs;
…		…
999		2146
1000	{	2147	{
1001	my $path = cf::localdir . "/database.pst";	2148	my $path = cf::localdir . "/database.pst";
1002		2149
1003	sub db_load() {	2150	sub db_load() {
1004	warn "loading database $path\n";#d# remove later
1005	$DB = stat $path ? Storable::retrieve $path : { };	2151	$DB = stat $path ? Storable::retrieve $path : { };
1006	}	2152	}
1007		2153
1008	my $pid;	2154	my $pid;
1009		2155
1010	sub db_save() {	2156	sub db_save() {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;	2157	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {	2158	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;	2159	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";	2160	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;	2161	rename "$path~", $path;
…		…
1047	$DB->{$_[0]} = $_[1];	2192	$DB->{$_[0]} = $_[1];
1048	}	2193	}
1049	db_dirty;	2194	db_dirty;
1050	}	2195	}
1051		2196
1052	attach_global	2197	cf::global->attach (
1053	prio => 10000,	2198	prio => 10000,
1054	on_cleanup => sub {	2199	on_cleanup => sub {
1055	db_sync;	2200	db_sync;
1056	},	2201	},
1057	;	2202	);
1058	}	2203	}
1059		2204
1060	#############################################################################	2205	#############################################################################
1061	# the server's main()	2206	# the server's main()
1062		2207
…		…
1064	open my $fh, "<:utf8", cf::confdir . "/config"	2209	open my $fh, "<:utf8", cf::confdir . "/config"
1065	or return;	2210	or return;
1066		2211
1067	local $/;	2212	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	2213	*CFG = YAML::Syck::Load <$fh>;
		2214
		2215	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2216
		2217	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2218	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2219
		2220	if (exists $CFG{mlockall}) {
		2221	eval {
		2222	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2223	and die "WARNING: m(un)lockall failed: $!\n";
		2224	};
		2225	warn $@ if $@;
		2226	}
1069	}	2227	}
1070		2228
1071	sub main {	2229	sub main {
		2230	# we must not ever block the main coroutine
		2231	local $Coro::idle = sub {
		2232	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2233	async { Event::one_event };
		2234	};
		2235
1072	cfg_load;	2236	cfg_load;
1073	db_load;	2237	db_load;
1074	load_extensions;	2238	load_extensions;
1075	Event::loop;	2239	Event::loop;
1076	}	2240	}
1077		2241
1078	#############################################################################	2242	#############################################################################
1079	# initialisation	2243	# initialisation and cleanup
1080		2244
		2245	# install some emergency cleanup handlers
		2246	BEGIN {
		2247	for my $signal (qw(INT HUP TERM)) {
		2248	Event->signal (
		2249	data => WF_AUTOCANCEL,
		2250	signal => $signal,
		2251	cb => sub {
		2252	cf::cleanup "SIG$signal";
		2253	},
		2254	);
		2255	}
		2256	}
		2257
		2258	sub emergency_save() {
		2259	my $freeze_guard = cf::freeze_mainloop;
		2260
		2261	warn "enter emergency perl save\n";
		2262
		2263	cf::sync_job {
		2264	# use a peculiar iteration method to avoid tripping on perl
		2265	# refcount bugs in for. also avoids problems with players
		2266	# and maps saved/destroyed asynchronously.
		2267	warn "begin emergency player save\n";
		2268	for my $login (keys %cf::PLAYER) {
		2269	my $pl = $cf::PLAYER{$login} or next;
		2270	$pl->valid or next;
		2271	$pl->save;
		2272	}
		2273	warn "end emergency player save\n";
		2274
		2275	warn "begin emergency map save\n";
		2276	for my $path (keys %cf::MAP) {
		2277	my $map = $cf::MAP{$path} or next;
		2278	$map->valid or next;
		2279	$map->save;
		2280	}
		2281	warn "end emergency map save\n";
		2282	};
		2283
		2284	warn "leave emergency perl save\n";
		2285	}
		2286
1081	sub _perl_reload(&) {	2287	sub reload() {
1082	my ($msg) = @_;	2288	# can/must only be called in main
		2289	if ($Coro::current != $Coro::main) {
		2290	warn "can only reload from main coroutine\n";
		2291	return;
		2292	}
1083		2293
1084	$msg->("reloading...");	2294	warn "reloading...";
		2295
		2296	warn "freezing server";
		2297	my $guard = freeze_mainloop;
		2298	cf::emergency_save;
		2299
		2300	warn "sync database to disk";
		2301	cf::db_sync;
		2302	IO::AIO::flush;
1085		2303
1086	eval {	2304	eval {
		2305	# if anything goes wrong in here, we should simply crash as we already saved
		2306
1087	# cancel all watchers	2307	warn "cancel all watchers";
1088	for (Event::all_watchers) {	2308	for (Event::all_watchers) {
1089	$_->cancel if $_->data & WF_AUTOCANCEL;	2309	$_->cancel if $_->data & WF_AUTOCANCEL;
1090	}	2310	}
1091		2311
		2312	warn "cancel all extension coros";
		2313	$_->cancel for values %EXT_CORO;
		2314	%EXT_CORO = ();
		2315
		2316	warn "remove commands";
		2317	%COMMAND = ();
		2318
		2319	warn "remove ext commands";
		2320	%EXTCMD = ();
		2321
1092	# unload all extensions	2322	warn "unload/nuke all extensions";
1093	for (@exts) {	2323	for my $pkg (@EXTS) {
1094	$msg->("unloading <$_>");	2324	warn "... unloading $pkg";
1095	unload_extension $_;	2325
		2326	if (my $cb = $pkg->can ("unload")) {
		2327	eval {
		2328	$cb->($pkg);
		2329	1
		2330	} or warn "$pkg unloaded, but with errors: $@";
1096	}	2331	}
1097		2332
		2333	warn "... nuking $pkg";
		2334	Symbol::delete_package $pkg;
		2335	}
		2336
1098	# unload all modules loaded from $LIBDIR	2337	warn "unload all perl modules loaded from $LIBDIR";
1099	while (my ($k, $v) = each %INC) {	2338	while (my ($k, $v) = each %INC) {
1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2339	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1101		2340
1102	$msg->("removing <$k>");	2341	warn "removing <$k>";
1103	delete $INC{$k};	2342	delete $INC{$k};
1104		2343
1105	$k =~ s/\.pm$//;	2344	$k =~ s/\.pm$//;
1106	$k =~ s/\//::/g;	2345	$k =~ s/\//::/g;
1107		2346
…		…
1110	}	2349	}
1111		2350
1112	Symbol::delete_package $k;	2351	Symbol::delete_package $k;
1113	}	2352	}
1114		2353
1115	# sync database to disk
1116	cf::db_sync;
1117
1118	# get rid of safe::, as good as possible	2354	warn "get rid of safe::, as good as possible";
1119	Symbol::delete_package "safe::$_"	2355	Symbol::delete_package "safe::$_"
1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2356	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1121		2357
1122	# remove register_script_function callbacks
1123	# TODO
1124
1125	# unload cf.pm "a bit"	2358	warn "unload cf.pm \"a bit\"";
1126	delete $INC{"cf.pm"};	2359	delete $INC{"cf.pm"};
1127		2360
1128	# don't, removes xs symbols, too,	2361	# don't, removes xs symbols, too,
1129	# and global variables created in xs	2362	# and global variables created in xs
1130	#Symbol::delete_package __PACKAGE__;	2363	#Symbol::delete_package __PACKAGE__;
1131		2364
1132	# reload cf.pm
1133	$msg->("reloading cf.pm");	2365	warn "reloading cf.pm";
1134	require cf;	2366	require cf;
		2367	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1135		2368
1136	# load config and database again	2369	warn "load config and database again";
1137	cf::cfg_load;	2370	cf::cfg_load;
1138	cf::db_load;	2371	cf::db_load;
1139		2372
1140	# load extensions	2373	warn "load extensions";
1141	$msg->("load extensions");
1142	cf::load_extensions;	2374	cf::load_extensions;
1143		2375
1144	# reattach attachments to objects	2376	warn "reattach attachments to objects/players";
1145	$msg->("reattach");
1146	_global_reattach;	2377	_global_reattach;
		2378	warn "reattach attachments to maps";
		2379	reattach $_ for values %MAP;
1147	};	2380	};
1148	$msg->($@) if $@;
1149		2381
1150	$msg->("reloaded");	2382	if ($@) {
		2383	warn $@;
		2384	warn "error while reloading, exiting.";
		2385	exit 1;
		2386	}
		2387
		2388	warn "reloaded";
1151	};	2389	};
1152		2390
1153	sub perl_reload() {
1154	_perl_reload {
1155	warn $_[0];
1156	print "$_[0]\n";
1157	};
1158	}
1159
1160	register "<global>", __PACKAGE__;
1161
1162	register_command "perl-reload" => sub {	2391	register_command "reload" => sub {
1163	my ($who, $arg) = @_;	2392	my ($who, $arg) = @_;
1164		2393
1165	if ($who->flag (FLAG_WIZ)) {	2394	if ($who->flag (FLAG_WIZ)) {
1166	_perl_reload {	2395	$who->message ("start of reload.");
1167	warn $_[0];	2396	reload;
1168	$who->message ($_[0]);	2397	$who->message ("end of reload.");
1169	};
1170	}	2398	}
1171	};	2399	};
1172		2400
1173	unshift @INC, $LIBDIR;	2401	unshift @INC, $LIBDIR;
1174		2402
1175	$TICK_WATCHER = Event->timer (	2403	$TICK_WATCHER = Event->timer (
		2404	reentrant => 0,
1176	prio => 1,	2405	prio => 0,
1177	async => 1,
1178	at => $NEXT_TICK || 1,	2406	at => $NEXT_TICK || $TICK,
1179	data => WF_AUTOCANCEL,	2407	data => WF_AUTOCANCEL,
1180	cb => sub {	2408	cb => sub {
		2409	$NOW = Event::time;
		2410
1181	cf::server_tick; # one server iteration	2411	cf::server_tick; # one server iteration
1182		2412	$RUNTIME += $TICK;
1183	my $NOW = Event::time;
1184	$NEXT_TICK += $TICK;	2413	$NEXT_TICK += $TICK;
1185		2414
		2415	$WAIT_FOR_TICK->broadcast;
		2416	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2417
1186	# if we are delayed by four ticks or more, skip them all	2418	# if we are delayed by four ticks or more, skip them all
1187	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2419	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1188		2420
1189	$TICK_WATCHER->at ($NEXT_TICK);	2421	$TICK_WATCHER->at ($NEXT_TICK);
1190	$TICK_WATCHER->start;	2422	$TICK_WATCHER->start;
1191	},	2423	},
1192	);	2424	);
1193		2425
1194	IO::AIO::max_poll_time $TICK * 0.2;	2426	IO::AIO::max_poll_time $TICK * 0.2;
1195		2427
		2428	$AIO_POLL_WATCHER = Event->io (
1196	Event->io (fd => IO::AIO::poll_fileno,	2429	fd => IO::AIO::poll_fileno,
1197	poll => 'r',	2430	poll => 'r',
1198	prio => 5,	2431	prio => 5,
1199	data => WF_AUTOCANCEL,	2432	data => WF_AUTOCANCEL,
1200	cb => \&IO::AIO::poll_cb);	2433	cb => \&IO::AIO::poll_cb,
		2434	);
		2435
		2436	$WRITE_RUNTIME_WATCHER = Event->timer (
		2437	data => WF_AUTOCANCEL,
		2438	after => 0,
		2439	interval => 10,
		2440	cb => sub {
		2441	(Coro::unblock_sub {
		2442	write_runtime
		2443	or warn "ERROR: unable to write runtime file: $!";
		2444	})->();
		2445	},
		2446	);
		2447
		2448	END { cf::emergency_save }
1201		2449
1202	1	2450	1
1203		2451

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