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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.72 by root, Sun Oct 1 11:41:37 2006 UTC vs.
Revision 1.201 by root, Mon Jan 29 18:15:23 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 3.5 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
10	use YAML::Syck ();	24	use YAML::Syck ();
11	use Time::HiRes;	25	use Time::HiRes;
12	use Event;	26
13	$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
14		30
15	# 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?
16	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
17		33
18	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		35
20	_init_vars;
21
22	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
23	our @EVENT;	44	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
25		46
26	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
27	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
28	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
29		53
30	our %CFG;	54	our %CFG;
31		55
		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;
		87
		88	sub cf::map::normalise;
		89
32	#############################################################################	90	#############################################################################
33		91
34	=head2 GLOBAL VARIABLES	92	=head2 GLOBAL VARIABLES
35		93
36	=over 4	94	=over 4
		95
		96	=item $cf::UPTIME
		97
		98	The timestamp of the server start (so not actually an uptime).
		99
		100	=item $cf::RUNTIME
		101
		102	The time this server has run, starts at 0 and is increased by $cf::TICK on
		103	every server tick.
37		104
38	=item $cf::LIBDIR	105	=item $cf::LIBDIR
39		106
40	The perl library directory, where extensions and cf-specific modules can	107	The perl library directory, where extensions and cf-specific modules can
41	be found. It will be added to C<@INC> automatically.	108	be found. It will be added to C<@INC> automatically.
42		109
		110	=item $cf::NOW
		111
		112	The time of the last (current) server tick.
		113
43	=item $cf::TICK	114	=item $cf::TICK
44		115
45	The interval between server ticks, in seconds.	116	The interval between server ticks, in seconds.
46		117
47	=item %cf::CFG	118	=item %cf::CFG
48		119
49	Configuration for the server, loaded from C</etc/crossfire/config>, or	120	Configuration for the server, loaded from C</etc/crossfire/config>, or
50	from wherever your confdir points to.	121	from wherever your confdir points to.
		122
		123	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		124
		125	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		126	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		127	processing has been done. Call C<< ->wait >> on them to maximise the
		128	window of cpu time available, or simply to synchronise to the server tick.
51		129
52	=back	130	=back
53		131
54	=cut	132	=cut
55		133
56	BEGIN {	134	BEGIN {
57	*CORE::GLOBAL::warn = sub {	135	*CORE::GLOBAL::warn = sub {
58	my $msg = join "", @_;	136	my $msg = join "", @_;
		137	utf8::encode $msg;
		138
59	$msg .= "\n"	139	$msg .= "\n"
60	unless $msg =~ /\n$/;	140	unless $msg =~ /\n$/;
61		141
62	print STDERR "cfperl: $msg";
63	LOG llevError, "cfperl: $msg";	142	LOG llevError, $msg;
64	};	143	};
65	}	144	}
66		145
		146	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		147	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		148	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		149	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		150	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
67	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	151	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
68		152
69	# we bless all objects into (empty) derived classes to force a method lookup	153	# we bless all objects into (empty) derived classes to force a method lookup
70	# within the Safe compartment.	154	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	155	for my $pkg (qw(
		156	cf::global cf::attachable
		157	cf::object cf::object::player
		158	cf::client cf::player
		159	cf::arch cf::living
		160	cf::map cf::party cf::region
		161	)) {
72	no strict 'refs';	162	no strict 'refs';
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	163	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	164	}
75		165
76	$Event::DIED = sub {	166	$Event::DIED = sub {
77	warn "error in event callback: @_";	167	warn "error in event callback: @_";
78	};	168	};
79		169
80	my %ext_pkg;
81	my @exts;
82	my @hook;
83	my %command;
84	my %extcmd;
85
86	=head2 UTILITY FUNCTIONS	170	=head2 UTILITY FUNCTIONS
87		171
88	=over 4	172	=over 4
89		173
		174	=item dumpval $ref
		175
90	=cut	176	=cut
		177
		178	sub dumpval {
		179	eval {
		180	local $SIG{__DIE__};
		181	my $d;
		182	if (1) {
		183	$d = new Data::Dumper([$_[0]], ["*var"]);
		184	$d->Terse(1);
		185	$d->Indent(2);
		186	$d->Quotekeys(0);
		187	$d->Useqq(1);
		188	#$d->Bless(...);
		189	$d->Seen($_[1]) if @_ > 1;
		190	$d = $d->Dump();
		191	}
		192	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		193	$d
		194	} || "[unable to dump $_[0]: '$@']";
		195	}
91		196
92	use JSON::Syck (); # TODO# replace by JSON::PC once working	197	use JSON::Syck (); # TODO# replace by JSON::PC once working
93		198
94	=item $ref = cf::from_json $json	199	=item $ref = cf::from_json $json
95		200
…		…
111	sub to_json($) {	216	sub to_json($) {
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	217	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
113	JSON::Syck::Dump $_[0]	218	JSON::Syck::Dump $_[0]
114	}	219	}
115		220
		221	=item cf::lock_wait $string
		222
		223	Wait until the given lock is available. See cf::lock_acquire.
		224
		225	=item my $lock = cf::lock_acquire $string
		226
		227	Wait until the given lock is available and then acquires it and returns
		228	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		229	for example when the coroutine gets canceled), the lock is automatically
		230	returned.
		231
		232	Lock names should begin with a unique identifier (for example, cf::map::find
		233	uses map_find and cf::map::load uses map_load).
		234
		235	=cut
		236
		237	our %LOCK;
		238
		239	sub lock_wait($) {
		240	my ($key) = @_;
		241
		242	# wait for lock, if any
		243	while ($LOCK{$key}) {
		244	push @{ $LOCK{$key} }, $Coro::current;
		245	Coro::schedule;
		246	}
		247	}
		248
		249	sub lock_acquire($) {
		250	my ($key) = @_;
		251
		252	# wait, to be sure we are not locked
		253	lock_wait $key;
		254
		255	$LOCK{$key} = [];
		256
		257	Coro::guard {
		258	# wake up all waiters, to be on the safe side
		259	$_->ready for @{ delete $LOCK{$key} };
		260	}
		261	}
		262
		263	sub freeze_mainloop {
		264	return unless $TICK_WATCHER->is_active;
		265
		266	my $guard = Coro::guard {
		267	$TICK_WATCHER->start;
		268	$WRITE_RUNTIME_WATCHER->start;
		269	};
		270	$WRITE_RUNTIME_WATCHER->stop;
		271	$TICK_WATCHER->stop;
		272	$guard
		273	}
		274
		275	=item cf::async { BLOCK }
		276
		277	Currently the same as Coro::async_pool, meaning you cannot use
		278	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		279	thing you are allowed to do is call C<prio> on it.
		280
		281	=cut
		282
		283	BEGIN { *async = \&Coro::async_pool }
		284
		285	=item cf::sync_job { BLOCK }
		286
		287	The design of crossfire+ requires that the main coro ($Coro::main) is
		288	always able to handle events or runnable, as crossfire+ is only partly
		289	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		290
		291	If it must be done, put the blocking parts into C<sync_job>. This will run
		292	the given BLOCK in another coroutine while waiting for the result. The
		293	server will be frozen during this time, so the block should either finish
		294	fast or be very important.
		295
		296	=cut
		297
		298	sub sync_job(&) {
		299	my ($job) = @_;
		300
		301	if ($Coro::current == $Coro::main) {
		302	# this is the main coro, too bad, we have to block
		303	# till the operation succeeds, freezing the server :/
		304
		305	# TODO: use suspend/resume instead
		306	# (but this is cancel-safe)
		307	my $freeze_guard = freeze_mainloop;
		308
		309	my $busy = 1;
		310	my @res;
		311
		312	(async {
		313	@res = eval { $job->() };
		314	warn $@ if $@;
		315	undef $busy;
		316	})->prio (Coro::PRIO_MAX);
		317
		318	while ($busy) {
		319	Coro::cede or Event::one_event;
		320	}
		321
		322	wantarray ? @res : $res[0]
		323	} else {
		324	# we are in another coroutine, how wonderful, everything just works
		325
		326	$job->()
		327	}
		328	}
		329
		330	=item $coro = cf::async_ext { BLOCK }
		331
		332	Like async, but this coro is automatically being canceled when the
		333	extension calling this is being unloaded.
		334
		335	=cut
		336
		337	sub async_ext(&) {
		338	my $cb = shift;
		339
		340	my $coro = &Coro::async ($cb);
		341
		342	$coro->on_destroy (sub {
		343	delete $EXT_CORO{$coro+0};
		344	});
		345	$EXT_CORO{$coro+0} = $coro;
		346
		347	$coro
		348	}
		349
		350	sub write_runtime {
		351	my $runtime = cf::localdir . "/runtime";
		352
		353	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		354	or return;
		355
		356	my $value = $cf::RUNTIME + 90 + 10;
		357	# 10 is the runtime save interval, for a monotonic clock
		358	# 60 allows for the watchdog to kill the server.
		359
		360	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		361	and return;
		362
		363	aio_fsync $fh
		364	and return;
		365
		366	close $fh
		367	or return;
		368
		369	aio_rename "$runtime~", $runtime
		370	and return;
		371
		372	1
		373	}
		374
116	=back	375	=back
117		376
118	=cut	377	=cut
119		378
120	#############################################################################	379	#############################################################################
121		380
122	=head2 EVENTS AND OBJECT ATTACHMENTS	381	=head2 ATTACHABLE OBJECTS
		382
		383	Many objects in crossfire are so-called attachable objects. That means you can
		384	attach callbacks/event handlers (a collection of which is called an "attachment")
		385	to it. All such attachable objects support the following methods.
		386
		387	In the following description, CLASS can be any of C<global>, C<object>
		388	C<player>, C<client> or C<map> (i.e. the attachable objects in
		389	crossfire+).
123		390
124	=over 4	391	=over 4
125		392
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	393	=item $attachable->attach ($attachment, key => $value...)
139		394
140	=item $map->detach ($attachment)	395	=item $attachable->detach ($attachment)
141		396
142	Attach/detach a pre-registered attachment to a map.	397	Attach/detach a pre-registered attachment to a specific object and give it
		398	the specified key/value pairs as arguments.
143		399
144	=item $bool = $object->attached ($name)	400	Example, attach a minesweeper attachment to the given object, making it a
		401	10x10 minesweeper game:
145		402
146	=item $bool = $player->attached ($name)	403	$obj->attach (minesweeper => width => 10, height => 10);
147		404
148	=item $bool = $map->attached ($name)	405	=item $bool = $attachable->attached ($name)
149		406
150	Checks wether the named attachment is currently attached to the object.	407	Checks wether the named attachment is currently attached to the object.
151		408
152	=item cf::attach_global ...	409	=item cf::CLASS->attach ...
153		410
154	Attach handlers for global events.	411	=item cf::CLASS->detach ...
155		412
156	This and all following C<attach_*>-functions expect any number of the	413	Define an anonymous attachment and attach it to all objects of the given
157	following handler/hook descriptions:	414	CLASS. See the next function for an explanation of its arguments.
		415
		416	You can attach to global events by using the C<cf::global> class.
		417
		418	Example, log all player logins:
		419
		420	cf::player->attach (
		421	on_login => sub {
		422	my ($pl) = @_;
		423	...
		424	},
		425	);
		426
		427	Example, attach to the jeweler skill:
		428
		429	cf::object->attach (
		430	type => cf::SKILL,
		431	subtype => cf::SK_JEWELER,
		432	on_use_skill => sub {
		433	my ($sk, $ob, $part, $dir, $msg) = @_;
		434	...
		435	},
		436	);
		437
		438	=item cf::CLASS::attachment $name, ...
		439
		440	Register an attachment by C<$name> through which attachable objects of the
		441	given CLASS can refer to this attachment.
		442
		443	Some classes such as crossfire maps and objects can specify attachments
		444	that are attached at load/instantiate time, thus the need for a name.
		445
		446	These calls expect any number of the following handler/hook descriptions:
158		447
159	=over 4	448	=over 4
160		449
161	=item prio => $number	450	=item prio => $number
162		451
…		…
164	by another C<prio> setting). Lower priority handlers get executed	453	by another C<prio> setting). Lower priority handlers get executed
165	earlier. The default priority is C<0>, and many built-in handlers are	454	earlier. The default priority is C<0>, and many built-in handlers are
166	registered at priority C<-1000>, so lower priorities should not be used	455	registered at priority C<-1000>, so lower priorities should not be used
167	unless you know what you are doing.	456	unless you know what you are doing.
168		457
		458	=item type => $type
		459
		460	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		461	given type of objects only (the additional parameter C<subtype> can be
		462	used to further limit to the given subtype).
		463
169	=item on_I<event> => \&cb	464	=item on_I<event> => \&cb
170		465
171	Call the given code reference whenever the named event happens (event is	466	Call the given code reference whenever the named event happens (event is
172	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	467	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
173	handlers are recognised generally depends on the type of object these	468	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	477	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	478	object/class are recognised.
184		479
185	=back	480	=back
186		481
187	=item cf::attach_to_type $object_type, $subtype, ...	482	Example, define an attachment called "sockpuppet" that calls the given
		483	event handler when a monster attacks:
188		484
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	485	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	486	on_skill_attack => sub {
191	type.	487	my ($self, $victim) = @_;
192		488	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	489	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	490	}
414	}
415		491
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	492	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		493
442	Just because you have a perl object does not mean that the corresponding	494	Just because you have a perl object does not mean that the corresponding
443	C-level object still exists. If you try to access an object that has no	495	C-level object still exists. If you try to access an object that has no
444	valid C counterpart anymore you get an exception at runtime. This method	496	valid C counterpart anymore you get an exception at runtime. This method
445	can be used to test for existence of the C object part without causing an	497	can be used to test for existence of the C object part without causing an
446	exception.	498	exception.
447		499
		500	=cut
		501
		502	# the following variables are defined in .xs and must not be re-created
		503	our @CB_GLOBAL = (); # registry for all global events
		504	our @CB_ATTACHABLE = (); # registry for all attachables
		505	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		506	our @CB_PLAYER = ();
		507	our @CB_CLIENT = ();
		508	our @CB_TYPE = (); # registry for type (cf-object class) based events
		509	our @CB_MAP = ();
		510
		511	my %attachment;
		512
		513	sub cf::attachable::thawer_merge {
		514	# simply override everything except _meta
		515	local $_[0]{_meta};
		516	%{$_[0]} = %{$_[1]};
		517	}
		518
		519	sub _attach_cb($$$$) {
		520	my ($registry, $event, $prio, $cb) = @_;
		521
		522	use sort 'stable';
		523
		524	$cb = [$prio, $cb];
		525
		526	@{$registry->[$event]} = sort
		527	{ $a->[0] cmp $b->[0] }
		528	@{$registry->[$event] || []}, $cb;
		529	}
		530
		531	# hack
		532	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		533
		534	# attach handles attaching event callbacks
		535	# the only thing the caller has to do is pass the correct
		536	# registry (== where the callback attaches to).
		537	sub _attach {
		538	my ($registry, $klass, @arg) = @_;
		539
		540	my $object_type;
		541	my $prio = 0;
		542	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		543
		544	#TODO: get rid of this hack
		545	if ($attachable_klass{$klass}) {
		546	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		547	}
		548
		549	while (@arg) {
		550	my $type = shift @arg;
		551
		552	if ($type eq "prio") {
		553	$prio = shift @arg;
		554
		555	} elsif ($type eq "type") {
		556	$object_type = shift @arg;
		557	$registry = $CB_TYPE[$object_type] ||= [];
		558
		559	} elsif ($type eq "subtype") {
		560	defined $object_type or Carp::croak "subtype specified without type";
		561	my $object_subtype = shift @arg;
		562	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		563
		564	} elsif ($type eq "package") {
		565	my $pkg = shift @arg;
		566
		567	while (my ($name, $id) = each %cb_id) {
		568	if (my $cb = $pkg->can ($name)) {
		569	_attach_cb $registry, $id, $prio, $cb;
		570	}
		571	}
		572
		573	} elsif (exists $cb_id{$type}) {
		574	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		575
		576	} elsif (ref $type) {
		577	warn "attaching objects not supported, ignoring.\n";
		578
		579	} else {
		580	shift @arg;
		581	warn "attach argument '$type' not supported, ignoring.\n";
		582	}
		583	}
		584	}
		585
		586	sub _object_attach {
		587	my ($obj, $name, %arg) = @_;
		588
		589	return if exists $obj->{_attachment}{$name};
		590
		591	if (my $attach = $attachment{$name}) {
		592	my $registry = $obj->registry;
		593
		594	for (@$attach) {
		595	my ($klass, @attach) = @$_;
		596	_attach $registry, $klass, @attach;
		597	}
		598
		599	$obj->{$name} = \%arg;
		600	} else {
		601	warn "object uses attachment '$name' that is not available, postponing.\n";
		602	}
		603
		604	$obj->{_attachment}{$name} = undef;
		605	}
		606
		607	sub cf::attachable::attach {
		608	if (ref $_[0]) {
		609	_object_attach @_;
		610	} else {
		611	_attach shift->_attach_registry, @_;
		612	}
		613	};
		614
		615	# all those should be optimised
		616	sub cf::attachable::detach {
		617	my ($obj, $name) = @_;
		618
		619	if (ref $obj) {
		620	delete $obj->{_attachment}{$name};
		621	reattach ($obj);
		622	} else {
		623	Carp::croak "cannot, currently, detach class attachments";
		624	}
		625	};
		626
		627	sub cf::attachable::attached {
		628	my ($obj, $name) = @_;
		629
		630	exists $obj->{_attachment}{$name}
		631	}
		632
		633	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		634	eval "#line " . __LINE__ . " 'cf.pm'
		635	sub cf::\L$klass\E::_attach_registry {
		636	(\\\@CB_$klass, KLASS_$klass)
		637	}
		638
		639	sub cf::\L$klass\E::attachment {
		640	my \$name = shift;
		641
		642	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		643	}
		644	";
		645	die if $@;
		646	}
		647
		648	our $override;
		649	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		650
		651	sub override {
		652	$override = 1;
		653	@invoke_results = ();
		654	}
		655
		656	sub do_invoke {
		657	my $event = shift;
		658	my $callbacks = shift;
		659
		660	@invoke_results = ();
		661
		662	local $override;
		663
		664	for (@$callbacks) {
		665	eval { &{$_->[1]} };
		666
		667	if ($@) {
		668	warn "$@";
		669	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		670	override;
		671	}
		672
		673	return 1 if $override;
		674	}
		675
		676	0
		677	}
		678
		679	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		680
		681	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		682
		683	Generate an object-specific event with the given arguments.
		684
		685	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		686	removed in future versions), and there is no public API to access override
		687	results (if you must, access C<@cf::invoke_results> directly).
		688
448	=back	689	=back
449		690
450	=cut	691	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		692
456	#############################################################################	693	#############################################################################
457	# object support	694	# object support
458		695
459	sub instantiate {
460	my ($obj, $data) = @_;
461
462	$data = from_json $data;
463
464	for (@$data) {
465	my ($name, $args) = @$_;
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}
470
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	696	sub reattach {
		697	# basically do the same as instantiate, without calling instantiate
473	my ($obj) = @_;	698	my ($obj) = @_;
		699
		700	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		701
474	my $registry = $obj->registry;	702	my $registry = $obj->registry;
475		703
476	@$registry = ();	704	@$registry = ();
477		705
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	706	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		707
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	708	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	709	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	710	for (@$attach) {
483	my ($klass, @attach) = @$_;	711	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	712	_attach $registry, $klass, @attach;
485	}	713	}
486	} else {	714	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	715	warn "object uses attachment '$name' that is not available, postponing.\n";
488	}	716	}
489	}	717	}
490	}	718	}
491		719
492	sub object_freezer_save {	720	cf::attachable->attach (
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}
521	}
522
523	sub object_thawer_load {
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	721	prio => -1000000,
		722	on_instantiate => sub {
		723	my ($obj, $data) = @_;
		724
		725	$data = from_json $data;
		726
		727	for (@$data) {
		728	my ($name, $args) = @$_;
		729
		730	$obj->attach ($name, %{$args || {} });
		731	}
		732	},
		733	on_reattach => \&reattach,
544	on_clone => sub {	734	on_clone => sub {
545	my ($src, $dst) = @_;	735	my ($src, $dst) = @_;
546		736
547	@{$dst->registry} = @{$src->registry};	737	@{$dst->registry} = @{$src->registry};
548		738
549	%$dst = %$src;	739	%$dst = %$src;
550		740
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	741	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	742	if exists $src->{_attachment};
553	},	743	},
554	;	744	);
		745
		746	sub object_freezer_save {
		747	my ($filename, $rdata, $objs) = @_;
		748
		749	sync_job {
		750	if (length $$rdata) {
		751	warn sprintf "saving %s (%d,%d)\n",
		752	$filename, length $$rdata, scalar @$objs;
		753
		754	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		755	chmod SAVE_MODE, $fh;
		756	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		757	aio_fsync $fh;
		758	close $fh;
		759
		760	if (@$objs) {
		761	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		762	chmod SAVE_MODE, $fh;
		763	my $data = Storable::nfreeze { version => 1, objs => $objs };
		764	aio_write $fh, 0, (length $data), $data, 0;
		765	aio_fsync $fh;
		766	close $fh;
		767	aio_rename "$filename.pst~", "$filename.pst";
		768	}
		769	} else {
		770	aio_unlink "$filename.pst";
		771	}
		772
		773	aio_rename "$filename~", $filename;
		774	} else {
		775	warn "FATAL: $filename~: $!\n";
		776	}
		777	} else {
		778	aio_unlink $filename;
		779	aio_unlink "$filename.pst";
		780	}
		781
		782	#d##TODO# nuke non .map-files if exist
		783	if ($filename =~ s/\.map$//) {
		784	aio_unlink $filename;
		785	aio_unlink "$filename.pst";
		786	}
		787	}
		788	}
		789
		790	sub object_freezer_as_string {
		791	my ($rdata, $objs) = @_;
		792
		793	use Data::Dumper;
		794
		795	$$rdata . Dumper $objs
		796	}
		797
		798	sub object_thawer_load {
		799	my ($filename) = @_;
		800
		801	my ($data, $av);
		802
		803	#d#TODO remove .map if file does not exist
		804	aio_stat $filename and $filename =~ s/\.map$//;
		805
		806	(aio_load $filename, $data) >= 0
		807	or return;
		808
		809	unless (aio_stat "$filename.pst") {
		810	(aio_load "$filename.pst", $av) >= 0
		811	or return;
		812	$av = eval { (Storable::thaw $av)->{objs} };
		813	}
		814
		815	warn sprintf "loading %s (%d)\n",
		816	$filename, length $data, scalar @{$av || []};#d#
		817	return ($data, $av);
		818	}
555		819
556	#############################################################################	820	#############################################################################
557	# old plug-in events	821	# command handling &c
558		822
559	sub inject_event {	823	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		824
563	my $cb = $hook[$event_code]{$extension}	825	Register a callback for execution when the client sends the user command
564	or return;	826	$name.
565		827
566	&$cb	828	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		829
588	sub register_command {	830	sub register_command {
589	my ($name, $time, $cb) = @_;	831	my ($name, $cb) = @_;
590		832
591	my $caller = caller;	833	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	834	#warn "registering command '$name/$time' to '$caller'";
593		835
594	push @{ $command{$name} }, [$time, $cb, $caller];	836	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	837	}
		838
		839	=item cf::register_extcmd $name => \&callback($pl,$packet);
		840
		841	Register a callbackf ro execution when the client sends an extcmd packet.
		842
		843	If the callback returns something, it is sent back as if reply was being
		844	called.
		845
		846	=cut
597		847
598	sub register_extcmd {	848	sub register_extcmd {
599	my ($name, $cb) = @_;	849	my ($name, $cb) = @_;
600		850
601	my $caller = caller;	851	$EXTCMD{$name} = $cb;
602	#warn "registering extcmd '$name' to '$caller'";
603
604	$extcmd{$name} = [$cb, $caller];
605	}	852	}
606		853
607	sub register {	854	cf::player->attach (
608	my ($base, $pkg) = @_;	855	on_command => sub {
		856	my ($pl, $name, $params) = @_;
609		857
610	#TODO	858	my $cb = $COMMAND{$name}
611	}	859	or return;
		860
		861	for my $cmd (@$cb) {
		862	$cmd->[1]->($pl->ob, $params);
		863	}
		864
		865	cf::override;
		866	},
		867	on_extcmd => sub {
		868	my ($pl, $buf) = @_;
		869
		870	my $msg = eval { from_json $buf };
		871
		872	if (ref $msg) {
		873	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		874	if (my %reply = $cb->($pl, $msg)) {
		875	$pl->ext_reply ($msg->{msgid}, %reply);
		876	}
		877	}
		878	} else {
		879	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		880	}
		881
		882	cf::override;
		883	},
		884	);
612		885
613	sub load_extension {	886	sub load_extension {
614	my ($path) = @_;	887	my ($path) = @_;
615		888
616	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	889	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
617	my $base = $1;	890	my $base = $1;
618	my $pkg = $1;	891	my $pkg = $1;
619	$pkg =~ s/[^[:word:]]/_/g;	892	$pkg =~ s/[^[:word:]]/_/g;
620	$pkg = "ext::$pkg";	893	$pkg = "ext::$pkg";
621		894
622	warn "loading '$path' into '$pkg'\n";	895	warn "... loading '$path' into '$pkg'\n";
623		896
624	open my $fh, "<:utf8", $path	897	open my $fh, "<:utf8", $path
625	or die "$path: $!";	898	or die "$path: $!";
626		899
627	my $source =	900	my $source =
628	"package $pkg; use strict; use utf8;\n"	901	"package $pkg; use strict; use utf8;\n"
629	. "#line 1 \"$path\"\n{\n"	902	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })	903	. (do { local $/; <$fh> })
631	. "\n};\n1";	904	. "\n};\n1";
632		905
633	eval $source	906	unless (eval $source) {
634	or die "$path: $@";	907	my $msg = $@ ? "$path: $@\n"
635		908	: "extension disabled.\n";
636	push @exts, $pkg;	909	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
637	$ext_pkg{$base} = $pkg;	910	warn $@;
638		911	warn "mandatory extension failed to load, exiting.\n";
639	# no strict 'refs';	912	exit 1;
640	# @{"$pkg\::ISA"} = ext::;	913	}
641		914	die $@;
642	register $base, $pkg;
643	}
644
645	sub unload_extension {
646	my ($pkg) = @_;
647
648	warn "removing extension $pkg\n";
649
650	# remove hooks
651	#TODO
652	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};
654	# }	915	}
655		916
656	# remove commands	917	push @EXTS, $pkg;
657	for my $name (keys %command) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
659
660	if (@cb) {
661	$command{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};
666	}
667	}
668
669	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
671	delete $extcmd{$name};
672	}
673
674	if (my $cb = $pkg->can ("unload")) {
675	eval {
676	$cb->($pkg);
677	1
678	} or warn "$pkg unloaded, but with errors: $@";
679	}
680
681	Symbol::delete_package $pkg;
682	}	918	}
683		919
684	sub load_extensions {	920	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {	921	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;	922	next unless -r $ext;
689	eval {	923	eval {
690	load_extension $ext;	924	load_extension $ext;
691	1	925	1
692	} or warn "$ext not loaded: $@";	926	} or warn "$ext not loaded: $@";
693	}	927	}
694	}	928	}
695		929
696	#############################################################################	930	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699		931
700	attach_to_players	932	=head2 CORE EXTENSIONS
701	on_extcmd => sub {	933
		934	Functions and methods that extend core crossfire objects.
		935
		936	=cut
		937
		938	package cf::player;
		939
		940	use Coro::AIO;
		941
		942	=head3 cf::player
		943
		944	=over 4
		945
		946	=item cf::player::find $login
		947
		948	Returns the given player object, loading it if necessary (might block).
		949
		950	=cut
		951
		952	sub playerdir($) {
		953	cf::localdir
		954	. "/"
		955	. cf::playerdir
		956	. "/"
		957	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		958	}
		959
		960	sub path($) {
		961	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		962
		963	(playerdir $login) . "/$login.pl"
		964	}
		965
		966	sub find_active($) {
		967	$cf::PLAYER{$_[0]}
		968	and $cf::PLAYER{$_[0]}->active
		969	and $cf::PLAYER{$_[0]}
		970	}
		971
		972	sub exists($) {
		973	my ($login) = @_;
		974
		975	$cf::PLAYER{$login}
		976	or cf::sync_job { !aio_stat path $login }
		977	}
		978
		979	sub find($) {
		980	return $cf::PLAYER{$_[0]} || do {
		981	my $login = $_[0];
		982
		983	my $guard = cf::lock_acquire "user_find:$login";
		984
		985	$cf::PLAYER{$_[0]} || do {
		986	my $pl = load_pl path $login
		987	or return;
		988	$cf::PLAYER{$login} = $pl
		989	}
		990	}
		991	}
		992
		993	sub save($) {
		994	my ($pl) = @_;
		995
		996	return if $pl->{deny_save};
		997
		998	my $path = path $pl;
		999	my $guard = cf::lock_acquire "user_save:$path";
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	aio_mkdir playerdir $pl, 0770;
		1004	$pl->{last_save} = $cf::RUNTIME;
		1005
		1006	$pl->save_pl ($path);
		1007	Coro::cede;
		1008	}
		1009
		1010	sub new($) {
		1011	my ($login) = @_;
		1012
		1013	my $self = create;
		1014
		1015	$self->ob->name ($login);
		1016	$self->{deny_save} = 1;
		1017
		1018	$cf::PLAYER{$login} = $self;
		1019
		1020	$self
		1021	}
		1022
		1023	=item $pl->quit_character
		1024
		1025	Nukes the player without looking back. If logged in, the connection will
		1026	be destroyed. May block for a long time.
		1027
		1028	=cut
		1029
		1030	sub quit_character {
		1031	my ($pl) = @_;
		1032
		1033	$pl->{deny_save} = 1;
		1034	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1035
		1036	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1037	$pl->deactivate;
		1038	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1039	$pl->ns->destroy if $pl->ns;
		1040
		1041	my $path = playerdir $pl;
		1042	my $temp = "$path~$cf::RUNTIME~deleting~";
		1043	aio_rename $path, $temp;
		1044	delete $cf::PLAYER{$pl->ob->name};
		1045	$pl->destroy;
		1046	IO::AIO::aio_rmtree $temp;
		1047	}
		1048
		1049	=item cf::player::list_logins
		1050
		1051	Returns am arrayref of all valid playernames in the system, can take a
		1052	while and may block, so not sync_job-capable, ever.
		1053
		1054	=cut
		1055
		1056	sub list_logins {
		1057	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1058	or return [];
		1059
		1060	my @logins;
		1061
		1062	for my $login (@$dirs) {
		1063	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1064	aio_read $fh, 0, 512, my $buf, 0 or next;
		1065	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1066
		1067	utf8::decode $login;
		1068	push @logins, $login;
		1069	}
		1070
		1071	\@logins
		1072	}
		1073
		1074	=item $player->maps
		1075
		1076	Returns an arrayref of map paths that are private for this
		1077	player. May block.
		1078
		1079	=cut
		1080
		1081	sub maps($) {
		1082	my ($pl) = @_;
		1083
		1084	$pl = ref $pl ? $pl->ob->name : $pl;
		1085
		1086	my $files = aio_readdir playerdir $pl
		1087	or return;
		1088
		1089	my @paths;
		1090
		1091	for (@$files) {
		1092	utf8::decode $_;
		1093	next if /\.(?:pl|pst)$/;
		1094	next unless /^$PATH_SEP/o;
		1095
		1096	push @paths, cf::map::normalise "~$pl/$_";
		1097	}
		1098
		1099	\@paths
		1100	}
		1101
		1102	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1103
		1104	Sends an ext reply to the player.
		1105
		1106	=cut
		1107
		1108	sub ext_reply($$$%) {
		1109	my ($self, $id, %msg) = @_;
		1110
		1111	$msg{msgid} = $id;
		1112
		1113	$self->send ("ext " . cf::to_json \%msg);
		1114	}
		1115
		1116	package cf;
		1117
		1118	=back
		1119
		1120
		1121	=head3 cf::map
		1122
		1123	=over 4
		1124
		1125	=cut
		1126
		1127	package cf::map;
		1128
		1129	use Fcntl;
		1130	use Coro::AIO;
		1131
		1132	use overload
		1133	'""' => \&as_string,
		1134	fallback => 1;
		1135
		1136	our $MAX_RESET = 3600;
		1137	our $DEFAULT_RESET = 3000;
		1138
		1139	sub generate_random_map {
		1140	my ($self, $rmp) = @_;
		1141	# mit "rum" bekleckern, nicht
		1142	$self->_create_random_map (
		1143	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1144	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1145	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1146	$rmp->{exit_on_final_map},
		1147	$rmp->{xsize}, $rmp->{ysize},
		1148	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1149	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1150	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1151	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1152	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1153	(cf::region::find $rmp->{region}), $rmp->{custom}
		1154	)
		1155	}
		1156
		1157	=item cf::map->register ($regex, $prio)
		1158
		1159	Register a handler for the map path matching the given regex at the
		1160	givne priority (higher is better, built-in handlers have priority 0, the
		1161	default).
		1162
		1163	=cut
		1164
		1165	sub register {
		1166	my (undef, $regex, $prio) = @_;
		1167	my $pkg = caller;
		1168
		1169	no strict;
		1170	push @{"$pkg\::ISA"}, __PACKAGE__;
		1171
		1172	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1173	}
		1174
		1175	# also paths starting with '/'
		1176	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1177
		1178	sub thawer_merge {
		1179	my ($self, $merge) = @_;
		1180
		1181	# we have to keep some variables in memory intact
		1182	local $self->{path};
		1183	local $self->{load_path};
		1184	local $self->{deny_save};
		1185	local $self->{deny_reset};
		1186
		1187	$self->SUPER::thawer_merge ($merge);
		1188	}
		1189
		1190	sub normalise {
		1191	my ($path, $base) = @_;
		1192
		1193	$path = "$path"; # make sure its a string
		1194
		1195	$path =~ s/\.map$//;
		1196
		1197	# map plan:
		1198	#
		1199	# /! non-realised random map exit (special hack!)
		1200	# {... are special paths that are not being touched
		1201	# ?xxx/... are special absolute paths
		1202	# ?random/... random maps
		1203	# /... normal maps
		1204	# ~user/... per-player map of a specific user
		1205
		1206	$path =~ s/$PATH_SEP/\//go;
		1207
		1208	# treat it as relative path if it starts with
		1209	# something that looks reasonable
		1210	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1211	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1212
		1213	$base =~ s{[^/]+/?$}{};
		1214	$path = "$base/$path";
		1215	}
		1216
		1217	for ($path) {
		1218	redo if s{//}{/};
		1219	redo if s{/\.?/}{/};
		1220	redo if s{/[^/]+/\.\./}{/};
		1221	}
		1222
		1223	$path
		1224	}
		1225
		1226	sub new_from_path {
		1227	my (undef, $path, $base) = @_;
		1228
		1229	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1230
		1231	$path = normalise $path, $base;
		1232
		1233	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1234	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1235	my $self = bless cf::map::new, $pkg;
		1236	$self->{path} = $path; $self->path ($path);
		1237	$self->init; # pass $1 etc.
		1238	return $self;
		1239	}
		1240	}
		1241
		1242	Carp::carp "unable to resolve path '$path' (base '$base').";
		1243	()
		1244	}
		1245
		1246	sub init {
		1247	my ($self) = @_;
		1248
		1249	$self
		1250	}
		1251
		1252	sub as_string {
		1253	my ($self) = @_;
		1254
		1255	"$self->{path}"
		1256	}
		1257
		1258	# the displayed name, this is a one way mapping
		1259	sub visible_name {
		1260	&as_string
		1261	}
		1262
		1263	# the original (read-only) location
		1264	sub load_path {
		1265	my ($self) = @_;
		1266
		1267	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1268	}
		1269
		1270	# the temporary/swap location
		1271	sub save_path {
		1272	my ($self) = @_;
		1273
		1274	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1275	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1276	}
		1277
		1278	# the unique path, undef == no special unique path
		1279	sub uniq_path {
		1280	my ($self) = @_;
		1281
		1282	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1283	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1284	}
		1285
		1286	# and all this just because we cannot iterate over
		1287	# all maps in C++...
		1288	sub change_all_map_light {
		1289	my ($change) = @_;
		1290
		1291	$_->change_map_light ($change)
		1292	for grep $_->outdoor, values %cf::MAP;
		1293	}
		1294
		1295	sub unlink_save {
		1296	my ($self) = @_;
		1297
		1298	utf8::encode (my $save = $self->save_path);
		1299	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1300	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1301
		1302	#d#TODO remove .map and also nuke
		1303	$save =~ s/\.map// or return;#d#
		1304	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1305	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1306	}
		1307
		1308	sub load_header_from($) {
		1309	my ($self, $path) = @_;
		1310
		1311	utf8::encode $path;
		1312	#aio_open $path, O_RDONLY, 0
		1313	# or return;
		1314
		1315	$self->_load_header ($path)
		1316	or return;
		1317
		1318	$self->{load_path} = $path;
		1319
		1320	1
		1321	}
		1322
		1323	sub load_header_orig {
		1324	my ($self) = @_;
		1325
		1326	$self->load_header_from ($self->load_path)
		1327	}
		1328
		1329	sub load_header_temp {
		1330	my ($self) = @_;
		1331
		1332	$self->load_header_from ($self->save_path)
		1333	}
		1334
		1335	sub prepare_temp {
		1336	my ($self) = @_;
		1337
		1338	$self->last_access ((delete $self->{last_access})
		1339	|| $cf::RUNTIME); #d#
		1340	# safety
		1341	$self->{instantiate_time} = $cf::RUNTIME
		1342	if $self->{instantiate_time} > $cf::RUNTIME;
		1343	}
		1344
		1345	sub prepare_orig {
		1346	my ($self) = @_;
		1347
		1348	$self->{load_original} = 1;
		1349	$self->{instantiate_time} = $cf::RUNTIME;
		1350	$self->last_access ($cf::RUNTIME);
		1351	$self->instantiate;
		1352	}
		1353
		1354	sub load_header {
		1355	my ($self) = @_;
		1356
		1357	if ($self->load_header_temp) {
		1358	$self->prepare_temp;
		1359	} else {
		1360	$self->load_header_orig
		1361	or return;
		1362	$self->prepare_orig;
		1363	}
		1364
		1365	1
		1366	}
		1367
		1368	sub find;
		1369	sub find {
		1370	my ($path, $origin) = @_;
		1371
		1372	$path = normalise $path, $origin && $origin->path;
		1373
		1374	cf::lock_wait "map_find:$path";
		1375
		1376	$cf::MAP{$path} || do {
		1377	my $guard = cf::lock_acquire "map_find:$path";
		1378	my $map = new_from_path cf::map $path
		1379	or return;
		1380
		1381	$map->{last_save} = $cf::RUNTIME;
		1382
		1383	$map->load_header
		1384	or return;
		1385
		1386	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1387	# doing this can freeze the server in a sync job, obviously
		1388	#$cf::WAIT_FOR_TICK->wait;
		1389	$map->reset;
		1390	undef $guard;
		1391	return find $path;
		1392	}
		1393
		1394	$cf::MAP{$path} = $map
		1395	}
		1396	}
		1397
		1398	sub pre_load { }
		1399	sub post_load { }
		1400
		1401	sub load {
		1402	my ($self) = @_;
		1403
		1404	local $self->{deny_reset} = 1; # loading can take a long time
		1405
		1406	my $path = $self->{path};
		1407	my $guard = cf::lock_acquire "map_load:$path";
		1408
		1409	return if $self->in_memory != cf::MAP_SWAPPED;
		1410
		1411	$self->in_memory (cf::MAP_LOADING);
		1412
		1413	$self->alloc;
		1414
		1415	$self->pre_load;
		1416
		1417	$self->_load_objects ($self->{load_path}, 1)
		1418	or return;
		1419
		1420	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1421	if delete $self->{load_original};
		1422
		1423	if (my $uniq = $self->uniq_path) {
		1424	utf8::encode $uniq;
		1425	if (aio_open $uniq, O_RDONLY, 0) {
		1426	$self->clear_unique_items;
		1427	$self->_load_objects ($uniq, 0);
		1428	}
		1429	}
		1430
		1431	Coro::cede;
		1432
		1433	# now do the right thing for maps
		1434	$self->link_multipart_objects;
		1435
		1436	unless ($self->{deny_activate}) {
		1437	$self->decay_objects;
		1438	$self->fix_auto_apply;
		1439	$self->update_buttons;
		1440	Coro::cede;
		1441	$self->set_darkness_map;
		1442	$self->difficulty ($self->estimate_difficulty)
		1443	unless $self->difficulty;
		1444	Coro::cede;
		1445	$self->activate;
		1446	}
		1447
		1448	$self->post_load;
		1449
		1450	$self->in_memory (cf::MAP_IN_MEMORY);
		1451	}
		1452
		1453	sub customise_for {
702	my ($pl, $buf) = @_;	1454	my ($self, $ob) = @_;
703		1455
704	my $msg = eval { from_json $buf };	1456	return find "~" . $ob->name . "/" . $self->{path}
		1457	if $self->per_player;
705		1458
706	if (ref $msg) {	1459	$self
707	if (my $cb = $extcmd{$msg->{msgtype}}) {	1460	}
708	if (my %reply = $cb->[0]->($pl, $msg)) {	1461
709	$pl->ext_reply ($msg->{msgid}, %reply);	1462	# find and load all maps in the 3x3 area around a map
710	}	1463	sub load_diag {
		1464	my ($map) = @_;
		1465
		1466	my @diag; # diagonal neighbours
		1467
		1468	for (0 .. 3) {
		1469	my $neigh = $map->tile_path ($_)
		1470	or next;
		1471	$neigh = find $neigh, $map
		1472	or next;
		1473	$neigh->load;
		1474
		1475	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1476	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1477	}
		1478
		1479	for (@diag) {
		1480	my $neigh = find @$_
		1481	or next;
		1482	$neigh->load;
		1483	}
		1484	}
		1485
		1486	sub find_sync {
		1487	my ($path, $origin) = @_;
		1488
		1489	cf::sync_job { find $path, $origin }
		1490	}
		1491
		1492	sub do_load_sync {
		1493	my ($map) = @_;
		1494
		1495	cf::sync_job { $map->load };
		1496	}
		1497
		1498	our %MAP_PREFETCH;
		1499	our $MAP_PREFETCHER = undef;
		1500
		1501	sub find_async {
		1502	my ($path, $origin) = @_;
		1503
		1504	$path = normalise $path, $origin && $origin->{path};
		1505
		1506	if (my $map = $cf::MAP{$path}) {
		1507	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1508	}
		1509
		1510	undef $MAP_PREFETCH{$path};
		1511	$MAP_PREFETCHER ||= cf::async {
		1512	while (%MAP_PREFETCH) {
		1513	for my $path (keys %MAP_PREFETCH) {
		1514	my $map = find $path
		1515	or next;
		1516	$map->load;
		1517
		1518	delete $MAP_PREFETCH{$path};
711	}	1519	}
		1520	}
		1521	undef $MAP_PREFETCHER;
		1522	};
		1523	$MAP_PREFETCHER->prio (6);
		1524
		1525	()
		1526	}
		1527
		1528	sub save {
		1529	my ($self) = @_;
		1530
		1531	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1532
		1533	$self->{last_save} = $cf::RUNTIME;
		1534
		1535	return unless $self->dirty;
		1536
		1537	my $save = $self->save_path; utf8::encode $save;
		1538	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1539
		1540	$self->{load_path} = $save;
		1541
		1542	return if $self->{deny_save};
		1543
		1544	local $self->{last_access} = $self->last_access;#d#
		1545
		1546	cf::async {
		1547	$_->contr->save for $self->players;
		1548	};
		1549
		1550	if ($uniq) {
		1551	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1552	$self->_save_objects ($uniq, cf::IO_UNIQUES);
712	} else {	1553	} else {
713	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1554	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
714	}
715
716	cf::override;
717	},	1555	}
718	;	1556	}
719		1557
720	#############################################################################	1558	sub swap_out {
721	# load/save/clean perl data associated with a map
722
723	*cf::mapsupport::on_clean = sub {
724	my ($map) = @_;	1559	my ($self) = @_;
725		1560
726	my $path = $map->tmpname;	1561	# save first because save cedes
727	defined $path or return;	1562	$self->save;
728		1563
729	unlink "$path.pst";	1564	my $lock = cf::lock_acquire "map_data:" . $self->path;
730	};
731		1565
732	attach_to_maps prio => -10000, package => cf::mapsupport::;	1566	return if $self->players;
		1567	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1568	return if $self->{deny_save};
733		1569
734	#############################################################################	1570	$self->clear;
735	# load/save perl data associated with player->ob objects	1571	$self->in_memory (cf::MAP_SWAPPED);
736
737	sub all_objects(@) {
738	@_, map all_objects ($_->inv), @_
739	}	1572	}
740		1573
741	# TODO: compatibility cruft, remove when no longer needed	1574	sub reset_at {
742	attach_to_players	1575	my ($self) = @_;
743	on_load => sub {
744	my ($pl, $path) = @_;
745		1576
746	for my $o (all_objects $pl->ob) {	1577	# TODO: safety, remove and allow resettable per-player maps
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1578	return 1e99 if $self->isa ("ext::map_per_player");#d#
748	$o->set_ob_key_value ("_perl_data");	1579	return 1e99 if $self->{deny_reset};
749		1580
750	%$o = %{ Storable::thaw pack "H*", $value };	1581	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
751	}	1582	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
752	}	1583
		1584	$time + $to
		1585	}
		1586
		1587	sub should_reset {
		1588	my ($self) = @_;
		1589
		1590	$self->reset_at <= $cf::RUNTIME
		1591	}
		1592
		1593	sub reset {
		1594	my ($self) = @_;
		1595
		1596	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1597
		1598	return if $self->players;
		1599	return if $self->isa ("ext::map_per_player");#d#
		1600
		1601	warn "resetting map ", $self->path;#d#
		1602
		1603	delete $cf::MAP{$self->path};
		1604
		1605	$self->in_memory (cf::MAP_SWAPPED);
		1606	$self->clear;
		1607
		1608	$_->clear_links_to ($self) for values %cf::MAP;
		1609
		1610	$self->unlink_save;
		1611	$self->destroy;
		1612	}
		1613
		1614	my $nuke_counter = "aaaa";
		1615
		1616	sub nuke {
		1617	my ($self) = @_;
		1618
		1619	delete $cf::MAP{$self->path};
		1620
		1621	$self->unlink_save;
		1622
		1623	bless $self, "cf::map";
		1624	delete $self->{deny_reset};
		1625	$self->{deny_save} = 1;
		1626	$self->reset_timeout (1);
		1627	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1628
		1629	$cf::MAP{$self->path} = $self;
		1630
		1631	$self->reset; # polite request, might not happen
		1632	}
		1633
		1634	=item cf::map::unique_maps
		1635
		1636	Returns an arrayref of paths of all shared maps that have
		1637	instantiated unique items. May block.
		1638
		1639	=cut
		1640
		1641	sub unique_maps() {
		1642	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1643	or return;
		1644
		1645	my @paths;
		1646
		1647	for (@$files) {
		1648	utf8::decode $_;
		1649	next if /\.pst$/;
		1650	next unless /^$PATH_SEP/o;
		1651
		1652	push @paths, cf::map::normalise $_;
753	},	1653	}
754	;
755		1654
756	#############################################################################	1655	\@paths
		1656	}
757		1657
758	=head2 CORE EXTENSIONS	1658	package cf;
759		1659
760	Functions and methods that extend core crossfire objects.	1660	=back
		1661
		1662	=head3 cf::object
		1663
		1664	=cut
		1665
		1666	package cf::object;
761		1667
762	=over 4	1668	=over 4
763		1669
764	=item cf::player::exists $login	1670	=item $ob->inv_recursive
765		1671
766	Returns true when the given account exists.	1672	Returns the inventory of the object _and_ their inventories, recursively.
767		1673
768	=cut	1674	=cut
769		1675
770	sub cf::player::exists($) {	1676	sub inv_recursive_;
771	cf::player::find $_[0]	1677	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1678	map { $_, inv_recursive_ $_->inv } @_
773	}	1679	}
774		1680
		1681	sub inv_recursive {
		1682	inv_recursive_ inv $_[0]
		1683	}
		1684
		1685	package cf;
		1686
		1687	=back
		1688
		1689	=head3 cf::object::player
		1690
		1691	=over 4
		1692
775	=item $player->reply ($npc, $msg[, $flags])	1693	=item $player_object->reply ($npc, $msg[, $flags])
776		1694
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1695	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	1696	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	1697	dialogue with the given NPC character.
780		1698
781	=cut	1699	=cut
782		1700
783	# rough implementation of a future "reply" method that works	1701	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	1702	# with dialog boxes.
		1703	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	1704	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	1705	my ($self, $npc, $msg, $flags) = @_;
787		1706
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1707	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		1708
…		…
793	$msg = $npc->name . " says: $msg" if $npc;	1712	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	1713	$self->message ($msg, $flags);
795	}	1714	}
796	}	1715	}
797		1716
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	1717	=item $player_object->may ("access")
799		1718
800	Sends an ext reply to the player.	1719	Returns wether the given player is authorized to access resource "access"
		1720	(e.g. "command_wizcast").
801		1721
802	=cut	1722	=cut
803		1723
804	sub cf::player::ext_reply($$$%) {	1724	sub cf::object::player::may {
		1725	my ($self, $access) = @_;
		1726
		1727	$self->flag (cf::FLAG_WIZ) ||
		1728	(ref $cf::CFG{"may_$access"}
		1729	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1730	: $cf::CFG{"may_$access"})
		1731	}
		1732
		1733	=item $player_object->enter_link
		1734
		1735	Freezes the player and moves him/her to a special map (C<{link}>).
		1736
		1737	The player should be reasonably safe there for short amounts of time. You
		1738	I<MUST> call C<leave_link> as soon as possible, though.
		1739
		1740	Will never block.
		1741
		1742	=item $player_object->leave_link ($map, $x, $y)
		1743
		1744	Moves the player out of the special C<{link}> map onto the specified
		1745	map. If the map is not valid (or omitted), the player will be moved back
		1746	to the location he/she was before the call to C<enter_link>, or, if that
		1747	fails, to the emergency map position.
		1748
		1749	Might block.
		1750
		1751	=cut
		1752
		1753	sub link_map {
		1754	unless ($LINK_MAP) {
		1755	$LINK_MAP = cf::map::find "{link}"
		1756	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1757	$LINK_MAP->load;
		1758	}
		1759
		1760	$LINK_MAP
		1761	}
		1762
		1763	sub cf::object::player::enter_link {
		1764	my ($self) = @_;
		1765
		1766	$self->deactivate_recursive;
		1767
		1768	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1769
		1770	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1771	if $self->map;
		1772
		1773	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1774	}
		1775
		1776	sub cf::object::player::leave_link {
		1777	my ($self, $map, $x, $y) = @_;
		1778
		1779	my $link_pos = delete $self->{_link_pos};
		1780
		1781	unless ($map) {
		1782	# restore original map position
		1783	($map, $x, $y) = @{ $link_pos || [] };
		1784	$map = cf::map::find $map;
		1785
		1786	unless ($map) {
		1787	($map, $x, $y) = @$EMERGENCY_POSITION;
		1788	$map = cf::map::find $map
		1789	or die "FATAL: cannot load emergency map\n";
		1790	}
		1791	}
		1792
		1793	($x, $y) = (-1, -1)
		1794	unless (defined $x) && (defined $y);
		1795
		1796	# use -1 or undef as default coordinates, not 0, 0
		1797	($x, $y) = ($map->enter_x, $map->enter_y)
		1798	if $x <=0 && $y <= 0;
		1799
		1800	$map->load;
		1801	$map->load_diag;
		1802
		1803	return unless $self->contr->active;
		1804	$self->activate_recursive;
		1805	$self->enter_map ($map, $x, $y);
		1806	}
		1807
		1808	cf::player->attach (
		1809	on_logout => sub {
		1810	my ($pl) = @_;
		1811
		1812	# abort map switching before logout
		1813	if ($pl->ob->{_link_pos}) {
		1814	cf::sync_job {
		1815	$pl->ob->leave_link
		1816	};
		1817	}
		1818	},
		1819	on_login => sub {
		1820	my ($pl) = @_;
		1821
		1822	# try to abort aborted map switching on player login :)
		1823	# should happen only on crashes
		1824	if ($pl->ob->{_link_pos}) {
		1825	$pl->ob->enter_link;
		1826	(async {
		1827	# we need this sleep as the login has a concurrent enter_exit running
		1828	# and this sleep increases chances of the player not ending up in scorn
		1829	$pl->ob->reply (undef,
		1830	"There was an internal problem at your last logout, "
		1831	. "the server will try to bring you to your intended destination in a second.",
		1832	cf::NDI_RED);
		1833	Coro::Timer::sleep 1;
		1834	$pl->ob->leave_link;
		1835	})->prio (2);
		1836	}
		1837	},
		1838	);
		1839
		1840	=item $player_object->goto ($path, $x, $y)
		1841
		1842	=cut
		1843
		1844	sub cf::object::player::goto {
		1845	my ($self, $path, $x, $y) = @_;
		1846
		1847	$self->enter_link;
		1848
		1849	(async {
		1850	my $map = eval {
		1851	my $map = cf::map::find $path;
		1852	$map = $map->customise_for ($self) if $map;
		1853	$map
		1854	} or
		1855	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1856
		1857	$self->leave_link ($map, $x, $y);
		1858	})->prio (1);
		1859	}
		1860
		1861	=item $player_object->enter_exit ($exit_object)
		1862
		1863	=cut
		1864
		1865	sub parse_random_map_params {
		1866	my ($spec) = @_;
		1867
		1868	my $rmp = { # defaults
		1869	xsize => (cf::rndm 15, 40),
		1870	ysize => (cf::rndm 15, 40),
		1871	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1872	#layout => string,
		1873	};
		1874
		1875	for (split /\n/, $spec) {
		1876	my ($k, $v) = split /\s+/, $_, 2;
		1877
		1878	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1879	}
		1880
		1881	$rmp
		1882	}
		1883
		1884	sub prepare_random_map {
		1885	my ($exit) = @_;
		1886
		1887	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1888
		1889	# all this does is basically replace the /! path by
		1890	# a new random map path (?random/...) with a seed
		1891	# that depends on the exit object
		1892
		1893	my $rmp = parse_random_map_params $exit->msg;
		1894
		1895	if ($exit->map) {
		1896	$rmp->{region} = $exit->region->name;
		1897	$rmp->{origin_map} = $exit->map->path;
		1898	$rmp->{origin_x} = $exit->x;
		1899	$rmp->{origin_y} = $exit->y;
		1900	}
		1901
		1902	$rmp->{random_seed} ||= $exit->random_seed;
		1903
		1904	my $data = cf::to_json $rmp;
		1905	my $md5 = Digest::MD5::md5_hex $data;
		1906	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1907
		1908	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1909	aio_write $fh, 0, (length $data), $data, 0;
		1910	undef $fh;
		1911	aio_rename "$meta~", $meta;
		1912
		1913	$exit->slaying ("?random/$md5");
		1914	$exit->msg (undef);
		1915	}
		1916	}
		1917
		1918	sub cf::object::player::enter_exit {
805	my ($self, $id, %msg) = @_;	1919	my ($self, $exit) = @_;
806		1920
807	$msg{msgid} = $id;	1921	return unless $self->type == cf::PLAYER;
808		1922
809	$self->send ("ext " . to_json \%msg);	1923	if ($exit->slaying eq "/!") {
		1924	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1925	cf::sync_job { prepare_random_map $exit };
		1926	}
		1927
		1928	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1929	my $hp = $exit->stats->hp;
		1930	my $sp = $exit->stats->sp;
		1931
		1932	$self->enter_link;
		1933
		1934	(async {
		1935	$self->deactivate_recursive; # just to be sure
		1936	unless (eval {
		1937	$self->goto ($slaying, $hp, $sp);
		1938
		1939	1;
		1940	}) {
		1941	$self->message ("Something went wrong deep within the crossfire server. "
		1942	. "I'll try to bring you back to the map you were before. "
		1943	. "Please report this to the dungeon master!",
		1944	cf::NDI_UNIQUE | cf::NDI_RED);
		1945
		1946	warn "ERROR in enter_exit: $@";
		1947	$self->leave_link;
		1948	}
		1949	})->prio (1);
810	}	1950	}
		1951
		1952	=head3 cf::client
		1953
		1954	=over 4
		1955
		1956	=item $client->send_drawinfo ($text, $flags)
		1957
		1958	Sends a drawinfo packet to the client. Circumvents output buffering so
		1959	should not be used under normal circumstances.
		1960
		1961	=cut
		1962
		1963	sub cf::client::send_drawinfo {
		1964	my ($self, $text, $flags) = @_;
		1965
		1966	utf8::encode $text;
		1967	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1968	}
		1969
		1970
		1971	=item $success = $client->query ($flags, "text", \&cb)
		1972
		1973	Queues a query to the client, calling the given callback with
		1974	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1975	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1976
		1977	Queries can fail, so check the return code. Or don't, as queries will become
		1978	reliable at some point in the future.
		1979
		1980	=cut
		1981
		1982	sub cf::client::query {
		1983	my ($self, $flags, $text, $cb) = @_;
		1984
		1985	return unless $self->state == ST_PLAYING
		1986	|| $self->state == ST_SETUP
		1987	|| $self->state == ST_CUSTOM;
		1988
		1989	$self->state (ST_CUSTOM);
		1990
		1991	utf8::encode $text;
		1992	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1993
		1994	$self->send_packet ($self->{query_queue}[0][0])
		1995	if @{ $self->{query_queue} } == 1;
		1996	}
		1997
		1998	cf::client->attach (
		1999	on_reply => sub {
		2000	my ($ns, $msg) = @_;
		2001
		2002	# this weird shuffling is so that direct followup queries
		2003	# get handled first
		2004	my $queue = delete $ns->{query_queue}
		2005	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2006
		2007	(shift @$queue)->[1]->($msg);
		2008
		2009	push @{ $ns->{query_queue} }, @$queue;
		2010
		2011	if (@{ $ns->{query_queue} } == @$queue) {
		2012	if (@$queue) {
		2013	$ns->send_packet ($ns->{query_queue}[0][0]);
		2014	} else {
		2015	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2016	}
		2017	}
		2018	},
		2019	);
		2020
		2021	=item $client->async (\&cb)
		2022
		2023	Create a new coroutine, running the specified callback. The coroutine will
		2024	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2025	or loss of connection).
		2026
		2027	=cut
		2028
		2029	sub cf::client::async {
		2030	my ($self, $cb) = @_;
		2031
		2032	my $coro = &Coro::async ($cb);
		2033
		2034	$coro->on_destroy (sub {
		2035	delete $self->{_coro}{$coro+0};
		2036	});
		2037
		2038	$self->{_coro}{$coro+0} = $coro;
		2039
		2040	$coro
		2041	}
		2042
		2043	cf::client->attach (
		2044	on_destroy => sub {
		2045	my ($ns) = @_;
		2046
		2047	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2048	},
		2049	);
811		2050
812	=back	2051	=back
813		2052
814	=cut
815
816	#############################################################################
817		2053
818	=head2 SAFE SCRIPTING	2054	=head2 SAFE SCRIPTING
819		2055
820	Functions that provide a safe environment to compile and execute	2056	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	2057	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	2058	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	2059	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	2060	functions and methods that can be called is greatly reduced.
825		2061
826	=cut	2062	=cut
827		2063
828	our $safe = new Safe "safe";	2064	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	2065	our $safe_hole = new Safe::Hole;
…		…
836		2072
837	=pod	2073	=pod
838		2074
839	The following fucntions and emthods are available within a safe environment:	2075	The following fucntions and emthods are available within a safe environment:
840		2076
841	cf::object contr pay_amount pay_player	2077	cf::object contr pay_amount pay_player map
842	cf::object::player player	2078	cf::object::player player
843	cf::player peaceful	2079	cf::player peaceful
		2080	cf::map trigger
844		2081
845	=cut	2082	=cut
846		2083
847	for (	2084	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	2085	["cf::object" => qw(contr pay_amount pay_player map)],
849	["cf::object::player" => qw(player)],	2086	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	2087	["cf::player" => qw(peaceful)],
		2088	["cf::map" => qw(trigger)],
851	) {	2089	) {
852	no strict 'refs';	2090	no strict 'refs';
853	my ($pkg, @funs) = @$_;	2091	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2092	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	2093	for @funs;
…		…
965		2203
966	Immediately write the database to disk I<if it is dirty>.	2204	Immediately write the database to disk I<if it is dirty>.
967		2205
968	=cut	2206	=cut
969		2207
		2208	our $DB;
		2209
970	{	2210	{
971	my $db;
972	my $path = cf::localdir . "/database.pst";	2211	my $path = cf::localdir . "/database.pst";
973		2212
974	sub db_load() {	2213	sub db_load() {
975	warn "loading database $path\n";#d# remove later
976	$db = stat $path ? Storable::retrieve $path : { };	2214	$DB = stat $path ? Storable::retrieve $path : { };
977	}	2215	}
978		2216
979	my $pid;	2217	my $pid;
980		2218
981	sub db_save() {	2219	sub db_save() {
982	warn "saving database $path\n";#d# remove later
983	waitpid $pid, 0 if $pid;	2220	waitpid $pid, 0 if $pid;
984	if (0 == ($pid = fork)) {	2221	if (0 == ($pid = fork)) {
985	$db->{_meta}{version} = 1;	2222	$DB->{_meta}{version} = 1;
986	Storable::nstore $db, "$path~";	2223	Storable::nstore $DB, "$path~";
987	rename "$path~", $path;	2224	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;	2225	cf::_exit 0 if defined $pid;
989	}	2226	}
990	}	2227	}
991		2228
…		…
994	sub db_sync() {	2231	sub db_sync() {
995	db_save if $dirty;	2232	db_save if $dirty;
996	undef $dirty;	2233	undef $dirty;
997	}	2234	}
998		2235
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2236	my $idle = Event->idle (
1000	db_sync;	2237	reentrant => 0,
		2238	min => 10,
		2239	max => 20,
		2240	repeat => 0,
		2241	data => WF_AUTOCANCEL,
		2242	cb => \&db_sync,
1001	});	2243	);
1002		2244
1003	sub db_dirty() {	2245	sub db_dirty() {
1004	$dirty = 1;	2246	$dirty = 1;
1005	$idle->start;	2247	$idle->start;
1006	}	2248	}
1007		2249
1008	sub db_get($;$) {	2250	sub db_get($;$) {
1009	@_ >= 2	2251	@_ >= 2
1010	? $db->{$_[0]}{$_[1]}	2252	? $DB->{$_[0]}{$_[1]}
1011	: ($db->{$_[0]} ||= { })	2253	: ($DB->{$_[0]} ||= { })
1012	}	2254	}
1013		2255
1014	sub db_put($$;$) {	2256	sub db_put($$;$) {
1015	if (@_ >= 3) {	2257	if (@_ >= 3) {
1016	$db->{$_[0]}{$_[1]} = $_[2];	2258	$DB->{$_[0]}{$_[1]} = $_[2];
1017	} else {	2259	} else {
1018	$db->{$_[0]} = $_[1];	2260	$DB->{$_[0]} = $_[1];
1019	}	2261	}
1020	db_dirty;	2262	db_dirty;
1021	}	2263	}
1022		2264
1023	attach_global	2265	cf::global->attach (
1024	prio => 10000,	2266	prio => 10000,
1025	on_cleanup => sub {	2267	on_cleanup => sub {
1026	db_sync;	2268	db_sync;
1027	},	2269	},
1028	;	2270	);
1029	}	2271	}
1030		2272
1031	#############################################################################	2273	#############################################################################
1032	# the server's main()	2274	# the server's main()
1033		2275
1034	sub load_cfg {	2276	sub cfg_load {
1035	open my $fh, "<:utf8", cf::confdir . "/config"	2277	open my $fh, "<:utf8", cf::confdir . "/config"
1036	or return;	2278	or return;
1037		2279
1038	local $/;	2280	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;	2281	*CFG = YAML::Syck::Load <$fh>;
1040		2282
1041	use Data::Dumper; warn Dumper \%CFG;	2283	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2284
		2285	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2286	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2287
		2288	if (exists $CFG{mlockall}) {
		2289	eval {
		2290	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2291	and die "WARNING: m(un)lockall failed: $!\n";
		2292	};
		2293	warn $@ if $@;
		2294	}
1042	}	2295	}
1043		2296
1044	sub main {	2297	sub main {
1045	load_cfg;	2298	# we must not ever block the main coroutine
		2299	local $Coro::idle = sub {
		2300	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2301	(async {
		2302	Event::one_event;
		2303	})->prio (Coro::PRIO_MAX);
		2304	};
		2305
		2306	cfg_load;
1046	db_load;	2307	db_load;
1047	load_extensions;	2308	load_extensions;
		2309
		2310	$TICK_WATCHER->start;
1048	Event::loop;	2311	Event::loop;
1049	}	2312	}
1050		2313
1051	#############################################################################	2314	#############################################################################
1052	# initialisation	2315	# initialisation and cleanup
1053		2316
		2317	# install some emergency cleanup handlers
		2318	BEGIN {
		2319	for my $signal (qw(INT HUP TERM)) {
		2320	Event->signal (
		2321	reentrant => 0,
		2322	data => WF_AUTOCANCEL,
		2323	signal => $signal,
		2324	prio => 0,
		2325	cb => sub {
		2326	cf::cleanup "SIG$signal";
		2327	},
		2328	);
		2329	}
		2330	}
		2331
		2332	sub emergency_save() {
		2333	my $freeze_guard = cf::freeze_mainloop;
		2334
		2335	warn "enter emergency perl save\n";
		2336
		2337	cf::sync_job {
		2338	# use a peculiar iteration method to avoid tripping on perl
		2339	# refcount bugs in for. also avoids problems with players
		2340	# and maps saved/destroyed asynchronously.
		2341	warn "begin emergency player save\n";
		2342	for my $login (keys %cf::PLAYER) {
		2343	my $pl = $cf::PLAYER{$login} or next;
		2344	$pl->valid or next;
		2345	$pl->save;
		2346	}
		2347	warn "end emergency player save\n";
		2348
		2349	warn "begin emergency map save\n";
		2350	for my $path (keys %cf::MAP) {
		2351	my $map = $cf::MAP{$path} or next;
		2352	$map->valid or next;
		2353	$map->save;
		2354	}
		2355	warn "end emergency map save\n";
		2356	};
		2357
		2358	warn "leave emergency perl save\n";
		2359	}
		2360
1054	sub _perl_reload(&) {	2361	sub reload() {
1055	my ($msg) = @_;	2362	# can/must only be called in main
		2363	if ($Coro::current != $Coro::main) {
		2364	warn "can only reload from main coroutine";
		2365	return;
		2366	}
1056		2367
1057	$msg->("reloading...");	2368	warn "reloading...";
		2369
		2370	warn "cancelling server ticker";
		2371	$TICK_WATCHER->cancel;
		2372
		2373	cf::emergency_save;
1058		2374
1059	eval {	2375	eval {
1060	# cancel all watchers	2376	# if anything goes wrong in here, we should simply crash as we already saved
		2377
		2378	warn "syncing database to disk";
		2379	cf::db_sync;
		2380
		2381	warn "cancelling all WF_AUTOCANCEL watchers";
1061	$_->cancel for Event::all_watchers;	2382	for (Event::all_watchers) {
		2383	$_->cancel if $_->data & WF_AUTOCANCEL;
		2384	}
1062		2385
1063	# unload all extensions	2386	warn "flushing outstanding aio requests";
1064	for (@exts) {	2387	for (;;) {
1065	$msg->("unloading <$_>");	2388	IO::AIO::flush;
1066	unload_extension $_;	2389	Coro::cede;
		2390	last unless IO::AIO::nreqs;
		2391	warn "iterate...";
		2392	}
		2393
		2394	warn "cancelling all extension coros";
		2395	$_->cancel for values %EXT_CORO;
		2396	%EXT_CORO = ();
		2397
		2398	warn "removing commands";
		2399	%COMMAND = ();
		2400
		2401	warn "removing ext commands";
		2402	%EXTCMD = ();
		2403
		2404	warn "unloading/nuking all extensions";
		2405	for my $pkg (@EXTS) {
		2406	warn "... unloading $pkg";
		2407
		2408	if (my $cb = $pkg->can ("unload")) {
		2409	eval {
		2410	$cb->($pkg);
		2411	1
		2412	} or warn "$pkg unloaded, but with errors: $@";
1067	}	2413	}
1068		2414
		2415	warn "... nuking $pkg";
		2416	Symbol::delete_package $pkg;
		2417	}
		2418
1069	# unload all modules loaded from $LIBDIR	2419	warn "unloading all perl modules loaded from $LIBDIR";
1070	while (my ($k, $v) = each %INC) {	2420	while (my ($k, $v) = each %INC) {
1071	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2421	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1072		2422
1073	$msg->("removing <$k>");	2423	warn "... unloading $k";
1074	delete $INC{$k};	2424	delete $INC{$k};
1075		2425
1076	$k =~ s/\.pm$//;	2426	$k =~ s/\.pm$//;
1077	$k =~ s/\//::/g;	2427	$k =~ s/\//::/g;
1078		2428
…		…
1081	}	2431	}
1082		2432
1083	Symbol::delete_package $k;	2433	Symbol::delete_package $k;
1084	}	2434	}
1085		2435
1086	# sync database to disk
1087	cf::db_sync;
1088
1089	# get rid of safe::, as good as possible	2436	warn "getting rid of safe::, as good as possible";
1090	Symbol::delete_package "safe::$_"	2437	Symbol::delete_package "safe::$_"
1091	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2438	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1092		2439
1093	# remove register_script_function callbacks
1094	# TODO
1095
1096	# unload cf.pm "a bit"	2440	warn "unloading cf.pm \"a bit\"";
1097	delete $INC{"cf.pm"};	2441	delete $INC{"cf.pm"};
1098		2442
1099	# don't, removes xs symbols, too,	2443	# don't, removes xs symbols, too,
1100	# and global variables created in xs	2444	# and global variables created in xs
1101	#Symbol::delete_package __PACKAGE__;	2445	#Symbol::delete_package __PACKAGE__;
1102		2446
1103	# reload cf.pm	2447	warn "unload completed, starting to reload now";
		2448
1104	$msg->("reloading cf.pm");	2449	warn "reloading cf.pm";
1105	require cf;	2450	require cf;
		2451	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1106		2452
1107	# load database again	2453	warn "loading config and database again";
		2454	cf::cfg_load;
1108	cf::db_load;	2455	cf::db_load;
1109		2456
1110	# load extensions	2457	warn "loading extensions";
1111	$msg->("load extensions");
1112	cf::load_extensions;	2458	cf::load_extensions;
1113		2459
1114	# reattach attachments to objects	2460	warn "reattaching attachments to objects/players";
1115	$msg->("reattach");
1116	_global_reattach;	2461	_global_reattach;
		2462	warn "reattaching attachments to maps";
		2463	reattach $_ for values %MAP;
		2464
		2465	warn "restarting server ticker";
		2466
		2467	$TICK_WATCHER->start;
1117	};	2468	};
1118	$msg->($@) if $@;
1119		2469
1120	$msg->("reloaded");	2470	if ($@) {
		2471	warn $@;
		2472	warn "error while reloading, exiting.";
		2473	exit 1;
		2474	}
		2475
		2476	warn "reloaded";
1121	};	2477	};
1122		2478
1123	sub perl_reload() {	2479	our $RELOAD_WATCHER; # used only during reload
1124	_perl_reload {
1125	warn $_[0];
1126	print "$_[0]\n";
1127	};
1128	}
1129		2480
1130	register_command "perl-reload", 0, sub {	2481	register_command "reload" => sub {
1131	my ($who, $arg) = @_;	2482	my ($who, $arg) = @_;
1132		2483
1133	if ($who->flag (FLAG_WIZ)) {	2484	if ($who->flag (FLAG_WIZ)) {
1134	_perl_reload {	2485	$who->message ("reloading server.");
1135	warn $_[0];	2486
1136	$who->message ($_[0]);	2487	# doing reload synchronously and two reloads happen back-to-back,
		2488	# coro crashes during coro_state_free->destroy here.
		2489
		2490	$RELOAD_WATCHER ||= Event->timer (
		2491	reentrant => 0,
		2492	after => 0,
		2493	data => WF_AUTOCANCEL,
		2494	cb => sub {
		2495	reload;
		2496	undef $RELOAD_WATCHER;
		2497	},
1137	};	2498	);
1138	}	2499	}
1139	};	2500	};
1140		2501
1141	register "<global>", __PACKAGE__;
1142
1143	unshift @INC, $LIBDIR;	2502	unshift @INC, $LIBDIR;
1144		2503
		2504	my $bug_warning = 0;
		2505
1145	$TICK_WATCHER = Event->timer (	2506	$TICK_WATCHER = Event->timer (
		2507	reentrant => 0,
		2508	parked => 1,
1146	prio => 1,	2509	prio => 0,
1147	at => $NEXT_TICK || 1,	2510	at => $NEXT_TICK || $TICK,
		2511	data => WF_AUTOCANCEL,
1148	cb => sub {	2512	cb => sub {
		2513	if ($Coro::current != $Coro::main) {
		2514	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2515	unless ++$bug_warning > 10;
		2516	return;
		2517	}
		2518
		2519	$NOW = Event::time;
		2520
1149	cf::server_tick; # one server iteration	2521	cf::server_tick; # one server iteration
1150		2522	$RUNTIME += $TICK;
1151	my $NOW = Event::time;
1152	$NEXT_TICK += $TICK;	2523	$NEXT_TICK += $TICK;
1153		2524
		2525	$WAIT_FOR_TICK->broadcast;
		2526	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2527
		2528	Event::sweep;
		2529	Coro::cede_notself;
		2530
		2531	# my $AFTER = Event::time;
		2532	# warn $AFTER - $NOW;#d#
		2533
1154	# if we are delayed by four ticks, skip them all	2534	# if we are delayed by four ticks or more, skip them all
1155	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2535	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1156		2536
1157	$TICK_WATCHER->at ($NEXT_TICK);	2537	$TICK_WATCHER->at ($NEXT_TICK);
1158	$TICK_WATCHER->start;	2538	$TICK_WATCHER->start;
1159	},	2539	},
1160	);	2540	);
1161		2541
		2542	IO::AIO::max_poll_time $TICK * 0.1;
		2543
		2544	undef $Coro::AIO::WATCHER;
		2545	$AIO_POLL_WATCHER = Event->io (
		2546	reentrant => 0,
		2547	fd => IO::AIO::poll_fileno,
		2548	poll => 'r',
		2549	prio => 6,
		2550	data => WF_AUTOCANCEL,
		2551	cb => \&IO::AIO::poll_cb,
		2552	);
		2553
		2554	$WRITE_RUNTIME_WATCHER = Event->timer (
		2555	reentrant => 0,
		2556	data => WF_AUTOCANCEL,
		2557	after => 1,
		2558	interval => 10,
		2559	prio => 6, # keep it lowest so it acts like a watchdog
		2560	cb => Coro::unblock_sub {
		2561	write_runtime
		2562	or warn "ERROR: unable to write runtime file: $!";
		2563	},
		2564	);
		2565
		2566	END { cf::emergency_save }
		2567
1162	1	2568	1
1163		2569

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