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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.86 by root, Thu Dec 14 05:09:32 2006 UTC vs.
Revision 1.211 by root, Tue Feb 13 16:23:32 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 BDB ();
		21	use Data::Dumper;
		22	use Digest::MD5;
		23	use Fcntl;
10	use IO::AIO ();	24	use IO::AIO 2.32 ();
11	use YAML::Syck ();	25	use YAML::Syck ();
12	use Time::HiRes;	26	use Time::HiRes;
13	use Event;	27	use Compress::LZF;
		28
		29	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		30
14	$Event::Eval = 1; # no idea why this is required, but it is	31	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		34
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	35	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	36	$YAML::Syck::ImplicitUnicode = 1;
18		37
19	use strict;	38	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		39
21	our %COMMAND = ();	40	our %COMMAND = ();
22	our %COMMAND_TIME = ();	41	our %COMMAND_TIME = ();
		42
		43	our @EXTS = (); # list of extension package names
23	our %EXTCMD = ();	44	our %EXTCMD = ();
24		45	our %EXT_CORO = (); # coroutines bound to extensions
25	_init_vars;	46	our %EXT_MAP = (); # pluggable maps
26		47
27	our @EVENT;	48	our @EVENT;
28	our $LIBDIR = maps_directory "perl";	49	our $LIBDIR = datadir . "/ext";
29		50
30	our $TICK = MAX_TIME * 1e-6;	51	our $TICK = MAX_TIME * 1e-6;
31	our $TICK_WATCHER;	52	our $TICK_WATCHER;
		53	our $AIO_POLL_WATCHER;
		54	our $WRITE_RUNTIME_WATCHER;
32	our $NEXT_TICK;	55	our $NEXT_TICK;
		56	our $NOW;
		57	our $USE_FSYNC = 1; # use fsync to write maps - default off
		58
		59	our $BDB_POLL_WATCHER;
		60	our $DB_ENV;
33		61
34	our %CFG;	62	our %CFG;
35		63
36	our $UPTIME; $UPTIME ||= time;	64	our $UPTIME; $UPTIME ||= time;
		65	our $RUNTIME;
		66
		67	our %PLAYER; # all users
		68	our %MAP; # all maps
		69	our $LINK_MAP; # the special {link} map, which is always available
		70	our $RANDOM_MAPS = cf::localdir . "/random";
		71	our $BDB_ENV_DIR = cf::localdir . "/db";
		72
		73	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		74	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		75
		76	# used to convert map paths into valid unix filenames by replacing / by ∕
		77	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		78
		79	binmode STDOUT;
		80	binmode STDERR;
		81
		82	# read virtual server time, if available
		83	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		84	open my $fh, "<", cf::localdir . "/runtime"
		85	or die "unable to read runtime file: $!";
		86	$RUNTIME = <$fh> + 0.;
		87	}
		88
		89	mkdir cf::localdir;
		90	mkdir cf::localdir . "/" . cf::playerdir;
		91	mkdir cf::localdir . "/" . cf::tmpdir;
		92	mkdir cf::localdir . "/" . cf::uniquedir;
		93	mkdir $RANDOM_MAPS;
		94	mkdir $BDB_ENV_DIR;
		95
		96	our $EMERGENCY_POSITION;
		97
		98	sub cf::map::normalise;
37		99
38	#############################################################################	100	#############################################################################
39		101
40	=head2 GLOBAL VARIABLES	102	=head2 GLOBAL VARIABLES
41		103
42	=over 4	104	=over 4
43		105
44	=item $cf::UPTIME	106	=item $cf::UPTIME
45		107
46	The timestamp of the server start (so not actually an uptime).	108	The timestamp of the server start (so not actually an uptime).
		109
		110	=item $cf::RUNTIME
		111
		112	The time this server has run, starts at 0 and is increased by $cf::TICK on
		113	every server tick.
47		114
48	=item $cf::LIBDIR	115	=item $cf::LIBDIR
49		116
50	The perl library directory, where extensions and cf-specific modules can	117	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	118	be found. It will be added to C<@INC> automatically.
52		119
		120	=item $cf::NOW
		121
		122	The time of the last (current) server tick.
		123
53	=item $cf::TICK	124	=item $cf::TICK
54		125
55	The interval between server ticks, in seconds.	126	The interval between server ticks, in seconds.
56		127
57	=item %cf::CFG	128	=item %cf::CFG
58		129
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	130	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	from wherever your confdir points to.	131	from wherever your confdir points to.
		132
		133	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		134
		135	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		136	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		137	processing has been done. Call C<< ->wait >> on them to maximise the
		138	window of cpu time available, or simply to synchronise to the server tick.
61		139
62	=back	140	=back
63		141
64	=cut	142	=cut
65		143
66	BEGIN {	144	BEGIN {
67	*CORE::GLOBAL::warn = sub {	145	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	146	my $msg = join "", @_;
		147	utf8::encode $msg;
		148
69	$msg .= "\n"	149	$msg .= "\n"
70	unless $msg =~ /\n$/;	150	unless $msg =~ /\n$/;
71		151
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	152	LOG llevError, $msg;
74	};	153	};
75	}	154	}
76		155
		156	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		157	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		158	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		159	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		160	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	161	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		162
79	# we bless all objects into (empty) derived classes to force a method lookup	163	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	164	# within the Safe compartment.
81	for my $pkg (qw(	165	for my $pkg (qw(
		166	cf::global cf::attachable
82	cf::object cf::object::player	167	cf::object cf::object::player
83	cf::client_socket cf::player	168	cf::client cf::player
84	cf::arch cf::living	169	cf::arch cf::living
85	cf::map cf::party cf::region	170	cf::map cf::party cf::region
86	)) {	171	)) {
87	no strict 'refs';	172	no strict 'refs';
88	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	173	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
…		…
90		175
91	$Event::DIED = sub {	176	$Event::DIED = sub {
92	warn "error in event callback: @_";	177	warn "error in event callback: @_";
93	};	178	};
94		179
95	my %ext_pkg;
96	my @exts;
97	my @hook;
98
99	=head2 UTILITY FUNCTIONS	180	=head2 UTILITY FUNCTIONS
100		181
101	=over 4	182	=over 4
102		183
		184	=item dumpval $ref
		185
103	=cut	186	=cut
		187
		188	sub dumpval {
		189	eval {
		190	local $SIG{__DIE__};
		191	my $d;
		192	if (1) {
		193	$d = new Data::Dumper([$_[0]], ["*var"]);
		194	$d->Terse(1);
		195	$d->Indent(2);
		196	$d->Quotekeys(0);
		197	$d->Useqq(1);
		198	#$d->Bless(...);
		199	$d->Seen($_[1]) if @_ > 1;
		200	$d = $d->Dump();
		201	}
		202	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		203	$d
		204	} || "[unable to dump $_[0]: '$@']";
		205	}
104		206
105	use JSON::Syck (); # TODO# replace by JSON::PC once working	207	use JSON::Syck (); # TODO# replace by JSON::PC once working
106		208
107	=item $ref = cf::from_json $json	209	=item $ref = cf::from_json $json
108		210
…		…
124	sub to_json($) {	226	sub to_json($) {
125	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	227	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
126	JSON::Syck::Dump $_[0]	228	JSON::Syck::Dump $_[0]
127	}	229	}
128		230
		231	=item cf::lock_wait $string
		232
		233	Wait until the given lock is available. See cf::lock_acquire.
		234
		235	=item my $lock = cf::lock_acquire $string
		236
		237	Wait until the given lock is available and then acquires it and returns
		238	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		239	for example when the coroutine gets canceled), the lock is automatically
		240	returned.
		241
		242	Lock names should begin with a unique identifier (for example, cf::map::find
		243	uses map_find and cf::map::load uses map_load).
		244
		245	=cut
		246
		247	our %LOCK;
		248
		249	sub lock_wait($) {
		250	my ($key) = @_;
		251
		252	# wait for lock, if any
		253	while ($LOCK{$key}) {
		254	push @{ $LOCK{$key} }, $Coro::current;
		255	Coro::schedule;
		256	}
		257	}
		258
		259	sub lock_acquire($) {
		260	my ($key) = @_;
		261
		262	# wait, to be sure we are not locked
		263	lock_wait $key;
		264
		265	$LOCK{$key} = [];
		266
		267	Coro::guard {
		268	# wake up all waiters, to be on the safe side
		269	$_->ready for @{ delete $LOCK{$key} };
		270	}
		271	}
		272
		273	sub freeze_mainloop {
		274	return unless $TICK_WATCHER->is_active;
		275
		276	my $guard = Coro::guard {
		277	$TICK_WATCHER->start;
		278	$WRITE_RUNTIME_WATCHER->start;
		279	};
		280	$WRITE_RUNTIME_WATCHER->stop;
		281	$TICK_WATCHER->stop;
		282	$guard
		283	}
		284
		285	=item cf::async { BLOCK }
		286
		287	Currently the same as Coro::async_pool, meaning you cannot use
		288	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		289	thing you are allowed to do is call C<prio> on it.
		290
		291	=cut
		292
		293	BEGIN { *async = \&Coro::async_pool }
		294
		295	=item cf::sync_job { BLOCK }
		296
		297	The design of crossfire+ requires that the main coro ($Coro::main) is
		298	always able to handle events or runnable, as crossfire+ is only partly
		299	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		300
		301	If it must be done, put the blocking parts into C<sync_job>. This will run
		302	the given BLOCK in another coroutine while waiting for the result. The
		303	server will be frozen during this time, so the block should either finish
		304	fast or be very important.
		305
		306	=cut
		307
		308	sub sync_job(&) {
		309	my ($job) = @_;
		310
		311	if ($Coro::current == $Coro::main) {
		312	# this is the main coro, too bad, we have to block
		313	# till the operation succeeds, freezing the server :/
		314
		315	# TODO: use suspend/resume instead
		316	# (but this is cancel-safe)
		317	my $freeze_guard = freeze_mainloop;
		318
		319	my $busy = 1;
		320	my @res;
		321
		322	(async {
		323	@res = eval { $job->() };
		324	warn $@ if $@;
		325	undef $busy;
		326	})->prio (Coro::PRIO_MAX);
		327
		328	while ($busy) {
		329	Coro::cede or Event::one_event;
		330	}
		331
		332	wantarray ? @res : $res[0]
		333	} else {
		334	# we are in another coroutine, how wonderful, everything just works
		335
		336	$job->()
		337	}
		338	}
		339
		340	=item $coro = cf::async_ext { BLOCK }
		341
		342	Like async, but this coro is automatically being canceled when the
		343	extension calling this is being unloaded.
		344
		345	=cut
		346
		347	sub async_ext(&) {
		348	my $cb = shift;
		349
		350	my $coro = &Coro::async ($cb);
		351
		352	$coro->on_destroy (sub {
		353	delete $EXT_CORO{$coro+0};
		354	});
		355	$EXT_CORO{$coro+0} = $coro;
		356
		357	$coro
		358	}
		359
		360	sub write_runtime {
		361	$TICK_WATCHER->is_active or cf::cleanup "mainloop frozen but runtime active", 1;
		362
		363	my $runtime = cf::localdir . "/runtime";
		364
		365	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		366	or return;
		367
		368	my $value = $cf::RUNTIME + 90 + 10;
		369	# 10 is the runtime save interval, for a monotonic clock
		370	# 60 allows for the watchdog to kill the server.
		371
		372	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		373	and return;
		374
		375	# always fsync - this file is important
		376	aio_fsync $fh
		377	and return;
		378
		379	close $fh
		380	or return;
		381
		382	aio_rename "$runtime~", $runtime
		383	and return;
		384
		385	1
		386	}
		387
129	=back	388	=back
130		389
131	=cut	390	=cut
132		391
133	#############################################################################	392	#############################################################################
134		393
135	=head2 EVENTS AND OBJECT ATTACHMENTS	394	=head2 ATTACHABLE OBJECTS
		395
		396	Many objects in crossfire are so-called attachable objects. That means you can
		397	attach callbacks/event handlers (a collection of which is called an "attachment")
		398	to it. All such attachable objects support the following methods.
		399
		400	In the following description, CLASS can be any of C<global>, C<object>
		401	C<player>, C<client> or C<map> (i.e. the attachable objects in
		402	crossfire+).
136		403
137	=over 4	404	=over 4
138		405
139	=item $object->attach ($attachment, key => $value...)
140
141	=item $object->detach ($attachment)
142
143	Attach/detach a pre-registered attachment to an object.
144
145	=item $player->attach ($attachment, key => $value...)
146
147	=item $player->detach ($attachment)
148
149	Attach/detach a pre-registered attachment to a player.
150
151	=item $map->attach ($attachment, key => $value...)	406	=item $attachable->attach ($attachment, key => $value...)
152		407
153	=item $map->detach ($attachment)	408	=item $attachable->detach ($attachment)
154		409
155	Attach/detach a pre-registered attachment to a map.	410	Attach/detach a pre-registered attachment to a specific object and give it
		411	the specified key/value pairs as arguments.
156		412
157	=item $bool = $object->attached ($name)	413	Example, attach a minesweeper attachment to the given object, making it a
		414	10x10 minesweeper game:
158		415
159	=item $bool = $player->attached ($name)	416	$obj->attach (minesweeper => width => 10, height => 10);
160		417
161	=item $bool = $map->attached ($name)	418	=item $bool = $attachable->attached ($name)
162		419
163	Checks wether the named attachment is currently attached to the object.	420	Checks wether the named attachment is currently attached to the object.
164		421
165	=item cf::attach_global ...	422	=item cf::CLASS->attach ...
166		423
167	Attach handlers for global events.	424	=item cf::CLASS->detach ...
168		425
169	This and all following C<attach_*>-functions expect any number of the	426	Define an anonymous attachment and attach it to all objects of the given
170	following handler/hook descriptions:	427	CLASS. See the next function for an explanation of its arguments.
		428
		429	You can attach to global events by using the C<cf::global> class.
		430
		431	Example, log all player logins:
		432
		433	cf::player->attach (
		434	on_login => sub {
		435	my ($pl) = @_;
		436	...
		437	},
		438	);
		439
		440	Example, attach to the jeweler skill:
		441
		442	cf::object->attach (
		443	type => cf::SKILL,
		444	subtype => cf::SK_JEWELER,
		445	on_use_skill => sub {
		446	my ($sk, $ob, $part, $dir, $msg) = @_;
		447	...
		448	},
		449	);
		450
		451	=item cf::CLASS::attachment $name, ...
		452
		453	Register an attachment by C<$name> through which attachable objects of the
		454	given CLASS can refer to this attachment.
		455
		456	Some classes such as crossfire maps and objects can specify attachments
		457	that are attached at load/instantiate time, thus the need for a name.
		458
		459	These calls expect any number of the following handler/hook descriptions:
171		460
172	=over 4	461	=over 4
173		462
174	=item prio => $number	463	=item prio => $number
175		464
…		…
177	by another C<prio> setting). Lower priority handlers get executed	466	by another C<prio> setting). Lower priority handlers get executed
178	earlier. The default priority is C<0>, and many built-in handlers are	467	earlier. The default priority is C<0>, and many built-in handlers are
179	registered at priority C<-1000>, so lower priorities should not be used	468	registered at priority C<-1000>, so lower priorities should not be used
180	unless you know what you are doing.	469	unless you know what you are doing.
181		470
		471	=item type => $type
		472
		473	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		474	given type of objects only (the additional parameter C<subtype> can be
		475	used to further limit to the given subtype).
		476
182	=item on_I<event> => \&cb	477	=item on_I<event> => \&cb
183		478
184	Call the given code reference whenever the named event happens (event is	479	Call the given code reference whenever the named event happens (event is
185	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	480	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
186	handlers are recognised generally depends on the type of object these	481	handlers are recognised generally depends on the type of object these
…		…
195	package and register them. Only handlers for eevents supported by the	490	package and register them. Only handlers for eevents supported by the
196	object/class are recognised.	491	object/class are recognised.
197		492
198	=back	493	=back
199		494
200	=item cf::attach_to_type $object_type, $subtype, ...	495	Example, define an attachment called "sockpuppet" that calls the given
		496	event handler when a monster attacks:
201		497
202	Attach handlers for a specific object type (e.g. TRANSPORT) and	498	cf::object::attachment sockpuppet =>
203	subtype. If C<$subtype> is zero or undef, matches all objects of the given	499	on_skill_attack => sub {
204	type.	500	my ($self, $victim) = @_;
205		501	...
206	=item cf::attach_to_objects ...
207
208	Attach handlers to all objects. Do not use this except for debugging or
209	very rare events, as handlers are (obviously) called for I<all> objects in
210	the game.
211
212	=item cf::attach_to_players ...
213
214	Attach handlers to all players.
215
216	=item cf::attach_to_maps ...
217
218	Attach handlers to all maps.
219
220	=item cf:register_attachment $name, ...
221
222	Register an attachment by name through which objects can refer to this
223	attachment.
224
225	=item cf:register_player_attachment $name, ...
226
227	Register an attachment by name through which players can refer to this
228	attachment.
229
230	=item cf:register_map_attachment $name, ...
231
232	Register an attachment by name through which maps can refer to this
233	attachment.
234
235	=cut
236
237	# the following variables are defined in .xs and must not be re-created
238	our @CB_GLOBAL = (); # registry for all global events
239	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
240	our @CB_PLAYER = ();
241	our @CB_TYPE = (); # registry for type (cf-object class) based events
242	our @CB_MAP = ();
243
244	my %attachment;
245
246	sub _attach_cb($\%$$$) {
247	my ($registry, $undo, $event, $prio, $cb) = @_;
248
249	use sort 'stable';
250
251	$cb = [$prio, $cb];
252
253	@{$registry->[$event]} = sort
254	{ $a->[0] cmp $b->[0] }
255	@{$registry->[$event] || []}, $cb;
256
257	push @{$undo->{cb}}, [$event, $cb];
258	}
259
260	# attach handles attaching event callbacks
261	# the only thing the caller has to do is pass the correct
262	# registry (== where the callback attaches to).
263	sub _attach(\@$@) {
264	my ($registry, $klass, @arg) = @_;
265
266	my $prio = 0;
267
268	my %undo = (
269	registry => $registry,
270	cb => [],
271	);
272
273	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
274
275	while (@arg) {
276	my $type = shift @arg;
277
278	if ($type eq "prio") {
279	$prio = shift @arg;
280
281	} elsif ($type eq "package") {
282	my $pkg = shift @arg;
283
284	while (my ($name, $id) = each %cb_id) {
285	if (my $cb = $pkg->can ($name)) {
286	_attach_cb $registry, %undo, $id, $prio, $cb;
287	}
288	}	502	}
289
290	} elsif (exists $cb_id{$type}) {
291	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
292
293	} elsif (ref $type) {
294	warn "attaching objects not supported, ignoring.\n";
295
296	} else {
297	shift @arg;
298	warn "attach argument '$type' not supported, ignoring.\n";
299	}
300	}
301
302	\%undo
303	}
304
305	sub _attach_attachment {
306	my ($obj, $name, %arg) = @_;
307
308	return if exists $obj->{_attachment}{$name};
309
310	my $res;
311
312	if (my $attach = $attachment{$name}) {
313	my $registry = $obj->registry;
314
315	for (@$attach) {
316	my ($klass, @attach) = @$_;
317	$res = _attach @$registry, $klass, @attach;
318	}
319
320	$obj->{$name} = \%arg;
321	} else {
322	warn "object uses attachment '$name' that is not available, postponing.\n";
323	}
324
325	$obj->{_attachment}{$name} = undef;
326
327	$res->{attachment} = $name;
328	$res
329	}
330
331	*cf::object::attach =
332	*cf::player::attach =
333	*cf::map::attach = sub {
334	my ($obj, $name, %arg) = @_;
335
336	_attach_attachment $obj, $name, %arg;
337	};
338
339	# all those should be optimised
340	*cf::object::detach =
341	*cf::player::detach =
342	*cf::map::detach = sub {
343	my ($obj, $name) = @_;
344
345	delete $obj->{_attachment}{$name};
346	reattach ($obj);
347	};
348
349	*cf::object::attached =
350	*cf::player::attached =
351	*cf::map::attached = sub {
352	my ($obj, $name) = @_;
353
354	exists $obj->{_attachment}{$name}
355	};
356
357	sub attach_global {
358	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
359	}
360
361	sub attach_to_type {
362	my $type = shift;
363	my $subtype = shift;
364
365	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
366	}
367
368	sub attach_to_objects {
369	_attach @CB_OBJECT, KLASS_OBJECT, @_
370	}
371
372	sub attach_to_players {
373	_attach @CB_PLAYER, KLASS_PLAYER, @_
374	}
375
376	sub attach_to_maps {
377	_attach @CB_MAP, KLASS_MAP, @_
378	}
379
380	sub register_attachment {
381	my $name = shift;
382
383	$attachment{$name} = [[KLASS_OBJECT, @_]];
384	}
385
386	sub register_player_attachment {
387	my $name = shift;
388
389	$attachment{$name} = [[KLASS_PLAYER, @_]];
390	}
391
392	sub register_map_attachment {
393	my $name = shift;
394
395	$attachment{$name} = [[KLASS_MAP, @_]];
396	}
397
398	our $override;
399	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
400
401	sub override {
402	$override = 1;
403	@invoke_results = ();
404	}
405
406	sub do_invoke {
407	my $event = shift;
408	my $callbacks = shift;
409
410	@invoke_results = ();
411
412	local $override;
413
414	for (@$callbacks) {
415	eval { &{$_->[1]} };
416
417	if ($@) {
418	warn "$@";
419	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
420	override;
421	}
422
423	return 1 if $override;
424	}
425
426	0	503	}
427	}
428		504
429	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	505	=item $attachable->valid
430
431	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
432
433	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
434
435	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
436
437	Generate a global/object/player/map-specific event with the given arguments.
438
439	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
440	removed in future versions), and there is no public API to access override
441	results (if you must, access C<@cf::invoke_results> directly).
442
443	=back
444
445	=cut
446
447	#############################################################################
448
449	=head2 METHODS VALID FOR ALL CORE OBJECTS
450
451	=over 4
452
453	=item $object->valid, $player->valid, $map->valid
454		506
455	Just because you have a perl object does not mean that the corresponding	507	Just because you have a perl object does not mean that the corresponding
456	C-level object still exists. If you try to access an object that has no	508	C-level object still exists. If you try to access an object that has no
457	valid C counterpart anymore you get an exception at runtime. This method	509	valid C counterpart anymore you get an exception at runtime. This method
458	can be used to test for existence of the C object part without causing an	510	can be used to test for existence of the C object part without causing an
459	exception.	511	exception.
460		512
		513	=cut
		514
		515	# the following variables are defined in .xs and must not be re-created
		516	our @CB_GLOBAL = (); # registry for all global events
		517	our @CB_ATTACHABLE = (); # registry for all attachables
		518	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		519	our @CB_PLAYER = ();
		520	our @CB_CLIENT = ();
		521	our @CB_TYPE = (); # registry for type (cf-object class) based events
		522	our @CB_MAP = ();
		523
		524	my %attachment;
		525
		526	sub cf::attachable::thawer_merge {
		527	# simply override everything except _meta
		528	local $_[0]{_meta};
		529	%{$_[0]} = %{$_[1]};
		530	}
		531
		532	sub _attach_cb($$$$) {
		533	my ($registry, $event, $prio, $cb) = @_;
		534
		535	use sort 'stable';
		536
		537	$cb = [$prio, $cb];
		538
		539	@{$registry->[$event]} = sort
		540	{ $a->[0] cmp $b->[0] }
		541	@{$registry->[$event] || []}, $cb;
		542	}
		543
		544	# hack
		545	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		546
		547	# attach handles attaching event callbacks
		548	# the only thing the caller has to do is pass the correct
		549	# registry (== where the callback attaches to).
		550	sub _attach {
		551	my ($registry, $klass, @arg) = @_;
		552
		553	my $object_type;
		554	my $prio = 0;
		555	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		556
		557	#TODO: get rid of this hack
		558	if ($attachable_klass{$klass}) {
		559	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		560	}
		561
		562	while (@arg) {
		563	my $type = shift @arg;
		564
		565	if ($type eq "prio") {
		566	$prio = shift @arg;
		567
		568	} elsif ($type eq "type") {
		569	$object_type = shift @arg;
		570	$registry = $CB_TYPE[$object_type] ||= [];
		571
		572	} elsif ($type eq "subtype") {
		573	defined $object_type or Carp::croak "subtype specified without type";
		574	my $object_subtype = shift @arg;
		575	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		576
		577	} elsif ($type eq "package") {
		578	my $pkg = shift @arg;
		579
		580	while (my ($name, $id) = each %cb_id) {
		581	if (my $cb = $pkg->can ($name)) {
		582	_attach_cb $registry, $id, $prio, $cb;
		583	}
		584	}
		585
		586	} elsif (exists $cb_id{$type}) {
		587	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		588
		589	} elsif (ref $type) {
		590	warn "attaching objects not supported, ignoring.\n";
		591
		592	} else {
		593	shift @arg;
		594	warn "attach argument '$type' not supported, ignoring.\n";
		595	}
		596	}
		597	}
		598
		599	sub _object_attach {
		600	my ($obj, $name, %arg) = @_;
		601
		602	return if exists $obj->{_attachment}{$name};
		603
		604	if (my $attach = $attachment{$name}) {
		605	my $registry = $obj->registry;
		606
		607	for (@$attach) {
		608	my ($klass, @attach) = @$_;
		609	_attach $registry, $klass, @attach;
		610	}
		611
		612	$obj->{$name} = \%arg;
		613	} else {
		614	warn "object uses attachment '$name' that is not available, postponing.\n";
		615	}
		616
		617	$obj->{_attachment}{$name} = undef;
		618	}
		619
		620	sub cf::attachable::attach {
		621	if (ref $_[0]) {
		622	_object_attach @_;
		623	} else {
		624	_attach shift->_attach_registry, @_;
		625	}
		626	};
		627
		628	# all those should be optimised
		629	sub cf::attachable::detach {
		630	my ($obj, $name) = @_;
		631
		632	if (ref $obj) {
		633	delete $obj->{_attachment}{$name};
		634	reattach ($obj);
		635	} else {
		636	Carp::croak "cannot, currently, detach class attachments";
		637	}
		638	};
		639
		640	sub cf::attachable::attached {
		641	my ($obj, $name) = @_;
		642
		643	exists $obj->{_attachment}{$name}
		644	}
		645
		646	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		647	eval "#line " . __LINE__ . " 'cf.pm'
		648	sub cf::\L$klass\E::_attach_registry {
		649	(\\\@CB_$klass, KLASS_$klass)
		650	}
		651
		652	sub cf::\L$klass\E::attachment {
		653	my \$name = shift;
		654
		655	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		656	}
		657	";
		658	die if $@;
		659	}
		660
		661	our $override;
		662	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		663
		664	sub override {
		665	$override = 1;
		666	@invoke_results = ();
		667	}
		668
		669	sub do_invoke {
		670	my $event = shift;
		671	my $callbacks = shift;
		672
		673	@invoke_results = ();
		674
		675	local $override;
		676
		677	for (@$callbacks) {
		678	eval { &{$_->[1]} };
		679
		680	if ($@) {
		681	warn "$@";
		682	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		683	override;
		684	}
		685
		686	return 1 if $override;
		687	}
		688
		689	0
		690	}
		691
		692	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		693
		694	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		695
		696	Generate an object-specific event with the given arguments.
		697
		698	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		699	removed in future versions), and there is no public API to access override
		700	results (if you must, access C<@cf::invoke_results> directly).
		701
461	=back	702	=back
462		703
463	=cut	704	=cut
464
465	*cf::object::valid =
466	*cf::player::valid =
467	*cf::map::valid = \&cf::_valid;
468		705
469	#############################################################################	706	#############################################################################
470	# object support	707	# object support
471		708
472	sub instantiate {
473	my ($obj, $data) = @_;
474
475	$data = from_json $data;
476
477	for (@$data) {
478	my ($name, $args) = @$_;
479
480	$obj->attach ($name, %{$args || {} });
481	}
482	}
483
484	# basically do the same as instantiate, without calling instantiate
485	sub reattach {	709	sub reattach {
		710	# basically do the same as instantiate, without calling instantiate
486	my ($obj) = @_;	711	my ($obj) = @_;
		712
		713	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		714
487	my $registry = $obj->registry;	715	my $registry = $obj->registry;
488		716
489	@$registry = ();	717	@$registry = ();
490		718
491	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	719	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
492		720
493	for my $name (keys %{ $obj->{_attachment} || {} }) {	721	for my $name (keys %{ $obj->{_attachment} || {} }) {
494	if (my $attach = $attachment{$name}) {	722	if (my $attach = $attachment{$name}) {
495	for (@$attach) {	723	for (@$attach) {
496	my ($klass, @attach) = @$_;	724	my ($klass, @attach) = @$_;
497	_attach @$registry, $klass, @attach;	725	_attach $registry, $klass, @attach;
498	}	726	}
499	} else {	727	} else {
500	warn "object uses attachment '$name' that is not available, postponing.\n";	728	warn "object uses attachment '$name' that is not available, postponing.\n";
501	}	729	}
502	}	730	}
503	}	731	}
504		732
505	sub object_freezer_save {	733	cf::attachable->attach (
506	my ($filename, $rdata, $objs) = @_;
507
508	if (length $$rdata) {
509	warn sprintf "saving %s (%d,%d)\n",
510	$filename, length $$rdata, scalar @$objs;
511
512	if (open my $fh, ">:raw", "$filename~") {
513	chmod SAVE_MODE, $fh;
514	syswrite $fh, $$rdata;
515	close $fh;
516
517	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
518	chmod SAVE_MODE, $fh;
519	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
520	close $fh;
521	rename "$filename.pst~", "$filename.pst";
522	} else {
523	unlink "$filename.pst";
524	}
525
526	rename "$filename~", $filename;
527	} else {
528	warn "FATAL: $filename~: $!\n";
529	}
530	} else {
531	unlink $filename;
532	unlink "$filename.pst";
533	}
534	}
535
536	sub object_freezer_as_string {
537	my ($rdata, $objs) = @_;
538
539	use Data::Dumper;
540
541	$$rdata . Dumper $objs
542	}
543
544	sub object_thawer_load {
545	my ($filename) = @_;
546
547	local $/;
548
549	my $av;
550
551	#TODO: use sysread etc.
552	if (open my $data, "<:raw:perlio", $filename) {
553	$data = <$data>;
554	if (open my $pst, "<:raw:perlio", "$filename.pst") {
555	$av = eval { (Storable::thaw <$pst>)->{objs} };
556	}
557	return ($data, $av);
558	}
559
560	()
561	}
562
563	attach_to_objects
564	prio => -1000000,	734	prio => -1000000,
		735	on_instantiate => sub {
		736	my ($obj, $data) = @_;
		737
		738	$data = from_json $data;
		739
		740	for (@$data) {
		741	my ($name, $args) = @$_;
		742
		743	$obj->attach ($name, %{$args || {} });
		744	}
		745	},
		746	on_reattach => \&reattach,
565	on_clone => sub {	747	on_clone => sub {
566	my ($src, $dst) = @_;	748	my ($src, $dst) = @_;
567		749
568	@{$dst->registry} = @{$src->registry};	750	@{$dst->registry} = @{$src->registry};
569		751
570	%$dst = %$src;	752	%$dst = %$src;
571		753
572	%{$dst->{_attachment}} = %{$src->{_attachment}}	754	%{$dst->{_attachment}} = %{$src->{_attachment}}
573	if exists $src->{_attachment};	755	if exists $src->{_attachment};
574	},	756	},
575	;	757	);
		758
		759	sub object_freezer_save {
		760	my ($filename, $rdata, $objs) = @_;
		761
		762	sync_job {
		763	if (length $$rdata) {
		764	warn sprintf "saving %s (%d,%d)\n",
		765	$filename, length $$rdata, scalar @$objs;
		766
		767	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		768	chmod SAVE_MODE, $fh;
		769	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		770	aio_fsync $fh if $cf::USE_FSYNC;
		771	close $fh;
		772
		773	if (@$objs) {
		774	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		775	chmod SAVE_MODE, $fh;
		776	my $data = Storable::nfreeze { version => 1, objs => $objs };
		777	aio_write $fh, 0, (length $data), $data, 0;
		778	aio_fsync $fh if $cf::USE_FSYNC;
		779	close $fh;
		780	aio_rename "$filename.pst~", "$filename.pst";
		781	}
		782	} else {
		783	aio_unlink "$filename.pst";
		784	}
		785
		786	aio_rename "$filename~", $filename;
		787	} else {
		788	warn "FATAL: $filename~: $!\n";
		789	}
		790	} else {
		791	aio_unlink $filename;
		792	aio_unlink "$filename.pst";
		793	}
		794
		795	#d##TODO# nuke non .map-files if exist
		796	if ($filename =~ s/\.map$//) {
		797	aio_unlink $filename;
		798	aio_unlink "$filename.pst";
		799	}
		800	}
		801	}
		802
		803	sub object_freezer_as_string {
		804	my ($rdata, $objs) = @_;
		805
		806	use Data::Dumper;
		807
		808	$$rdata . Dumper $objs
		809	}
		810
		811	sub object_thawer_load {
		812	my ($filename) = @_;
		813
		814	my ($data, $av);
		815
		816	#d#TODO remove .map if file does not exist
		817	aio_stat $filename and $filename =~ s/\.map$//;
		818
		819	(aio_load $filename, $data) >= 0
		820	or return;
		821
		822	unless (aio_stat "$filename.pst") {
		823	(aio_load "$filename.pst", $av) >= 0
		824	or return;
		825	$av = eval { (Storable::thaw $av)->{objs} };
		826	}
		827
		828	warn sprintf "loading %s (%d)\n",
		829	$filename, length $data, scalar @{$av || []};#d#
		830	return ($data, $av);
		831	}
576		832
577	#############################################################################	833	#############################################################################
578	# command handling &c	834	# command handling &c
579		835
580	=item cf::register_command $name => \&callback($ob,$args);	836	=item cf::register_command $name => \&callback($ob,$args);
…		…
603	=cut	859	=cut
604		860
605	sub register_extcmd {	861	sub register_extcmd {
606	my ($name, $cb) = @_;	862	my ($name, $cb) = @_;
607		863
608	my $caller = caller;
609	#warn "registering extcmd '$name' to '$caller'";
610
611	$EXTCMD{$name} = [$cb, $caller];	864	$EXTCMD{$name} = $cb;
612	}	865	}
613		866
614	attach_to_players	867	cf::player->attach (
615	on_command => sub {	868	on_command => sub {
616	my ($pl, $name, $params) = @_;	869	my ($pl, $name, $params) = @_;
617		870
618	my $cb = $COMMAND{$name}	871	my $cb = $COMMAND{$name}
619	or return;	872	or return;
…		…
629		882
630	my $msg = eval { from_json $buf };	883	my $msg = eval { from_json $buf };
631		884
632	if (ref $msg) {	885	if (ref $msg) {
633	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	886	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
634	if (my %reply = $cb->[0]->($pl, $msg)) {	887	if (my %reply = $cb->($pl, $msg)) {
635	$pl->ext_reply ($msg->{msgid}, %reply);	888	$pl->ext_reply ($msg->{msgid}, %reply);
636	}	889	}
637	}	890	}
638	} else {	891	} else {
639	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	892	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
640	}	893	}
641		894
642	cf::override;	895	cf::override;
643	},	896	},
644	;	897	);
645
646	sub register {
647	my ($base, $pkg) = @_;
648
649	#TODO
650	}
651		898
652	sub load_extension {	899	sub load_extension {
653	my ($path) = @_;	900	my ($path) = @_;
654		901
655	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	902	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
656	my $base = $1;	903	my $base = $1;
657	my $pkg = $1;	904	my $pkg = $1;
658	$pkg =~ s/[^[:word:]]/_/g;	905	$pkg =~ s/[^[:word:]]/_/g;
659	$pkg = "ext::$pkg";	906	$pkg = "ext::$pkg";
660		907
661	warn "loading '$path' into '$pkg'\n";	908	warn "... loading '$path' into '$pkg'\n";
662		909
663	open my $fh, "<:utf8", $path	910	open my $fh, "<:utf8", $path
664	or die "$path: $!";	911	or die "$path: $!";
665		912
666	my $source =	913	my $source =
667	"package $pkg; use strict; use utf8;\n"	914	"package $pkg; use strict; use utf8;\n"
668	. "#line 1 \"$path\"\n{\n"	915	. "#line 1 \"$path\"\n{\n"
669	. (do { local $/; <$fh> })	916	. (do { local $/; <$fh> })
670	. "\n};\n1";	917	. "\n};\n1";
671		918
672	eval $source	919	unless (eval $source) {
673	or die $@ ? "$path: $@\n"	920	my $msg = $@ ? "$path: $@\n"
674	: "extension disabled.\n";	921	: "extension disabled.\n";
675		922	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
676	push @exts, $pkg;	923	warn $@;
677	$ext_pkg{$base} = $pkg;	924	warn "mandatory extension failed to load, exiting.\n";
678		925	exit 1;
679	# no strict 'refs';	926	}
680	# @{"$pkg\::ISA"} = ext::;	927	die $@;
681
682	register $base, $pkg;
683	}
684
685	sub unload_extension {
686	my ($pkg) = @_;
687
688	warn "removing extension $pkg\n";
689
690	# remove hooks
691	#TODO
692	# for my $idx (0 .. $#PLUGIN_EVENT) {
693	# delete $hook[$idx]{$pkg};
694	# }	928	}
695		929
696	# remove commands	930	push @EXTS, $pkg;
697	for my $name (keys %COMMAND) {
698	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
699
700	if (@cb) {
701	$COMMAND{$name} = \@cb;
702	} else {
703	delete $COMMAND{$name};
704	}
705	}
706
707	# remove extcmds
708	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
709	delete $EXTCMD{$name};
710	}
711
712	if (my $cb = $pkg->can ("unload")) {
713	eval {
714	$cb->($pkg);
715	1
716	} or warn "$pkg unloaded, but with errors: $@";
717	}
718
719	Symbol::delete_package $pkg;
720	}	931	}
721		932
722	sub load_extensions {	933	sub load_extensions {
723	my $LIBDIR = maps_directory "perl";
724
725	for my $ext (<$LIBDIR/*.ext>) {	934	for my $ext (<$LIBDIR/*.ext>) {
726	next unless -r $ext;	935	next unless -r $ext;
727	eval {	936	eval {
728	load_extension $ext;	937	load_extension $ext;
729	1	938	1
730	} or warn "$ext not loaded: $@";	939	} or warn "$ext not loaded: $@";
731	}	940	}
732	}	941	}
733		942
734	#############################################################################	943	#############################################################################
735	# load/save/clean perl data associated with a map
736		944
737	*cf::mapsupport::on_clean = sub {	945	=head2 CORE EXTENSIONS
		946
		947	Functions and methods that extend core crossfire objects.
		948
		949	=cut
		950
		951	package cf::player;
		952
		953	use Coro::AIO;
		954
		955	=head3 cf::player
		956
		957	=over 4
		958
		959	=item cf::player::find $login
		960
		961	Returns the given player object, loading it if necessary (might block).
		962
		963	=cut
		964
		965	sub playerdir($) {
		966	cf::localdir
		967	. "/"
		968	. cf::playerdir
		969	. "/"
		970	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		971	}
		972
		973	sub path($) {
		974	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		975
		976	(playerdir $login) . "/$login.pl"
		977	}
		978
		979	sub find_active($) {
		980	$cf::PLAYER{$_[0]}
		981	and $cf::PLAYER{$_[0]}->active
		982	and $cf::PLAYER{$_[0]}
		983	}
		984
		985	sub exists($) {
		986	my ($login) = @_;
		987
		988	$cf::PLAYER{$login}
		989	or cf::sync_job { !aio_stat path $login }
		990	}
		991
		992	sub find($) {
		993	return $cf::PLAYER{$_[0]} || do {
		994	my $login = $_[0];
		995
		996	my $guard = cf::lock_acquire "user_find:$login";
		997
		998	$cf::PLAYER{$_[0]} || do {
		999	my $pl = load_pl path $login
		1000	or return;
		1001	$cf::PLAYER{$login} = $pl
		1002	}
		1003	}
		1004	}
		1005
		1006	sub save($) {
		1007	my ($pl) = @_;
		1008
		1009	return if $pl->{deny_save};
		1010
		1011	my $path = path $pl;
		1012	my $guard = cf::lock_acquire "user_save:$path";
		1013
		1014	return if $pl->{deny_save};
		1015
		1016	aio_mkdir playerdir $pl, 0770;
		1017	$pl->{last_save} = $cf::RUNTIME;
		1018
		1019	$pl->save_pl ($path);
		1020	Coro::cede;
		1021	}
		1022
		1023	sub new($) {
		1024	my ($login) = @_;
		1025
		1026	my $self = create;
		1027
		1028	$self->ob->name ($login);
		1029	$self->{deny_save} = 1;
		1030
		1031	$cf::PLAYER{$login} = $self;
		1032
		1033	$self
		1034	}
		1035
		1036	=item $pl->quit_character
		1037
		1038	Nukes the player without looking back. If logged in, the connection will
		1039	be destroyed. May block for a long time.
		1040
		1041	=cut
		1042
		1043	sub quit_character {
		1044	my ($pl) = @_;
		1045
		1046	$pl->{deny_save} = 1;
		1047	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1048
		1049	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1050	$pl->deactivate;
		1051	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1052	$pl->ns->destroy if $pl->ns;
		1053
		1054	my $path = playerdir $pl;
		1055	my $temp = "$path~$cf::RUNTIME~deleting~";
		1056	aio_rename $path, $temp;
		1057	delete $cf::PLAYER{$pl->ob->name};
		1058	$pl->destroy;
		1059	IO::AIO::aio_rmtree $temp;
		1060	}
		1061
		1062	=item cf::player::list_logins
		1063
		1064	Returns am arrayref of all valid playernames in the system, can take a
		1065	while and may block, so not sync_job-capable, ever.
		1066
		1067	=cut
		1068
		1069	sub list_logins {
		1070	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1071	or return [];
		1072
		1073	my @logins;
		1074
		1075	for my $login (@$dirs) {
		1076	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1077	aio_read $fh, 0, 512, my $buf, 0 or next;
		1078	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1079
		1080	utf8::decode $login;
		1081	push @logins, $login;
		1082	}
		1083
		1084	\@logins
		1085	}
		1086
		1087	=item $player->maps
		1088
		1089	Returns an arrayref of map paths that are private for this
		1090	player. May block.
		1091
		1092	=cut
		1093
		1094	sub maps($) {
		1095	my ($pl) = @_;
		1096
		1097	$pl = ref $pl ? $pl->ob->name : $pl;
		1098
		1099	my $files = aio_readdir playerdir $pl
		1100	or return;
		1101
		1102	my @paths;
		1103
		1104	for (@$files) {
		1105	utf8::decode $_;
		1106	next if /\.(?:pl|pst)$/;
		1107	next unless /^$PATH_SEP/o;
		1108
		1109	push @paths, cf::map::normalise "~$pl/$_";
		1110	}
		1111
		1112	\@paths
		1113	}
		1114
		1115	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1116
		1117	Sends an ext reply to the player.
		1118
		1119	=cut
		1120
		1121	sub ext_reply($$$%) {
		1122	my ($self, $id, %msg) = @_;
		1123
		1124	$msg{msgid} = $id;
		1125
		1126	$self->send ("ext " . cf::to_json \%msg);
		1127	}
		1128
		1129	package cf;
		1130
		1131	=back
		1132
		1133
		1134	=head3 cf::map
		1135
		1136	=over 4
		1137
		1138	=cut
		1139
		1140	package cf::map;
		1141
		1142	use Fcntl;
		1143	use Coro::AIO;
		1144
		1145	use overload
		1146	'""' => \&as_string,
		1147	fallback => 1;
		1148
		1149	our $MAX_RESET = 3600;
		1150	our $DEFAULT_RESET = 3000;
		1151
		1152	sub generate_random_map {
		1153	my ($self, $rmp) = @_;
		1154	# mit "rum" bekleckern, nicht
		1155	$self->_create_random_map (
		1156	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1157	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1158	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1159	$rmp->{exit_on_final_map},
		1160	$rmp->{xsize}, $rmp->{ysize},
		1161	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1162	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1163	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1164	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1165	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1166	(cf::region::find $rmp->{region}), $rmp->{custom}
		1167	)
		1168	}
		1169
		1170	=item cf::map->register ($regex, $prio)
		1171
		1172	Register a handler for the map path matching the given regex at the
		1173	givne priority (higher is better, built-in handlers have priority 0, the
		1174	default).
		1175
		1176	=cut
		1177
		1178	sub register {
		1179	my (undef, $regex, $prio) = @_;
		1180	my $pkg = caller;
		1181
		1182	no strict;
		1183	push @{"$pkg\::ISA"}, __PACKAGE__;
		1184
		1185	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1186	}
		1187
		1188	# also paths starting with '/'
		1189	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1190
		1191	sub thawer_merge {
		1192	my ($self, $merge) = @_;
		1193
		1194	# we have to keep some variables in memory intact
		1195	local $self->{path};
		1196	local $self->{load_path};
		1197	local $self->{deny_save};
		1198	local $self->{deny_reset};
		1199
		1200	$self->SUPER::thawer_merge ($merge);
		1201	}
		1202
		1203	sub normalise {
		1204	my ($path, $base) = @_;
		1205
		1206	$path = "$path"; # make sure its a string
		1207
		1208	$path =~ s/\.map$//;
		1209
		1210	# map plan:
		1211	#
		1212	# /! non-realised random map exit (special hack!)
		1213	# {... are special paths that are not being touched
		1214	# ?xxx/... are special absolute paths
		1215	# ?random/... random maps
		1216	# /... normal maps
		1217	# ~user/... per-player map of a specific user
		1218
		1219	$path =~ s/$PATH_SEP/\//go;
		1220
		1221	# treat it as relative path if it starts with
		1222	# something that looks reasonable
		1223	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1224	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1225
		1226	$base =~ s{[^/]+/?$}{};
		1227	$path = "$base/$path";
		1228	}
		1229
		1230	for ($path) {
		1231	redo if s{//}{/};
		1232	redo if s{/\.?/}{/};
		1233	redo if s{/[^/]+/\.\./}{/};
		1234	}
		1235
		1236	$path
		1237	}
		1238
		1239	sub new_from_path {
		1240	my (undef, $path, $base) = @_;
		1241
		1242	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1243
		1244	$path = normalise $path, $base;
		1245
		1246	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1247	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1248	my $self = bless cf::map::new, $pkg;
		1249	$self->{path} = $path; $self->path ($path);
		1250	$self->init; # pass $1 etc.
		1251	return $self;
		1252	}
		1253	}
		1254
		1255	Carp::carp "unable to resolve path '$path' (base '$base').";
		1256	()
		1257	}
		1258
		1259	sub init {
		1260	my ($self) = @_;
		1261
		1262	$self
		1263	}
		1264
		1265	sub as_string {
		1266	my ($self) = @_;
		1267
		1268	"$self->{path}"
		1269	}
		1270
		1271	# the displayed name, this is a one way mapping
		1272	sub visible_name {
		1273	&as_string
		1274	}
		1275
		1276	# the original (read-only) location
		1277	sub load_path {
		1278	my ($self) = @_;
		1279
		1280	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1281	}
		1282
		1283	# the temporary/swap location
		1284	sub save_path {
		1285	my ($self) = @_;
		1286
		1287	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1288	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1289	}
		1290
		1291	# the unique path, undef == no special unique path
		1292	sub uniq_path {
		1293	my ($self) = @_;
		1294
		1295	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1296	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1297	}
		1298
		1299	# and all this just because we cannot iterate over
		1300	# all maps in C++...
		1301	sub change_all_map_light {
		1302	my ($change) = @_;
		1303
		1304	$_->change_map_light ($change)
		1305	for grep $_->outdoor, values %cf::MAP;
		1306	}
		1307
		1308	sub unlink_save {
		1309	my ($self) = @_;
		1310
		1311	utf8::encode (my $save = $self->save_path);
		1312	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1313	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1314
		1315	#d#TODO remove .map and also nuke
		1316	$save =~ s/\.map// or return;#d#
		1317	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1318	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1319	}
		1320
		1321	sub load_header_from($) {
		1322	my ($self, $path) = @_;
		1323
		1324	utf8::encode $path;
		1325	#aio_open $path, O_RDONLY, 0
		1326	# or return;
		1327
		1328	$self->_load_header ($path)
		1329	or return;
		1330
		1331	$self->{load_path} = $path;
		1332
		1333	1
		1334	}
		1335
		1336	sub load_header_orig {
		1337	my ($self) = @_;
		1338
		1339	$self->load_header_from ($self->load_path)
		1340	}
		1341
		1342	sub load_header_temp {
		1343	my ($self) = @_;
		1344
		1345	$self->load_header_from ($self->save_path)
		1346	}
		1347
		1348	sub prepare_temp {
		1349	my ($self) = @_;
		1350
		1351	$self->last_access ((delete $self->{last_access})
		1352	|| $cf::RUNTIME); #d#
		1353	# safety
		1354	$self->{instantiate_time} = $cf::RUNTIME
		1355	if $self->{instantiate_time} > $cf::RUNTIME;
		1356	}
		1357
		1358	sub prepare_orig {
		1359	my ($self) = @_;
		1360
		1361	$self->{load_original} = 1;
		1362	$self->{instantiate_time} = $cf::RUNTIME;
		1363	$self->last_access ($cf::RUNTIME);
		1364	$self->instantiate;
		1365	}
		1366
		1367	sub load_header {
		1368	my ($self) = @_;
		1369
		1370	if ($self->load_header_temp) {
		1371	$self->prepare_temp;
		1372	} else {
		1373	$self->load_header_orig
		1374	or return;
		1375	$self->prepare_orig;
		1376	}
		1377
		1378	1
		1379	}
		1380
		1381	sub find;
		1382	sub find {
		1383	my ($path, $origin) = @_;
		1384
		1385	$path = normalise $path, $origin && $origin->path;
		1386
		1387	cf::lock_wait "map_find:$path";
		1388
		1389	$cf::MAP{$path} || do {
		1390	my $guard = cf::lock_acquire "map_find:$path";
		1391	my $map = new_from_path cf::map $path
		1392	or return;
		1393
		1394	$map->{last_save} = $cf::RUNTIME;
		1395
		1396	$map->load_header
		1397	or return;
		1398
		1399	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1400	# doing this can freeze the server in a sync job, obviously
		1401	#$cf::WAIT_FOR_TICK->wait;
		1402	$map->reset;
		1403	undef $guard;
		1404	return find $path;
		1405	}
		1406
		1407	$cf::MAP{$path} = $map
		1408	}
		1409	}
		1410
		1411	sub pre_load { }
		1412	sub post_load { }
		1413
		1414	sub load {
		1415	my ($self) = @_;
		1416
		1417	local $self->{deny_reset} = 1; # loading can take a long time
		1418
		1419	my $path = $self->{path};
		1420	my $guard = cf::lock_acquire "map_load:$path";
		1421
		1422	return if $self->in_memory != cf::MAP_SWAPPED;
		1423
		1424	$self->in_memory (cf::MAP_LOADING);
		1425
		1426	$self->alloc;
		1427
		1428	$self->pre_load;
		1429
		1430	$self->_load_objects ($self->{load_path}, 1)
		1431	or return;
		1432
		1433	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1434	if delete $self->{load_original};
		1435
		1436	if (my $uniq = $self->uniq_path) {
		1437	utf8::encode $uniq;
		1438	if (aio_open $uniq, O_RDONLY, 0) {
		1439	$self->clear_unique_items;
		1440	$self->_load_objects ($uniq, 0);
		1441	}
		1442	}
		1443
		1444	Coro::cede;
		1445
		1446	# now do the right thing for maps
		1447	$self->link_multipart_objects;
		1448
		1449	unless ($self->{deny_activate}) {
		1450	$self->decay_objects;
		1451	$self->fix_auto_apply;
		1452	$self->update_buttons;
		1453	Coro::cede;
		1454	$self->set_darkness_map;
		1455	$self->difficulty ($self->estimate_difficulty)
		1456	unless $self->difficulty;
		1457	Coro::cede;
		1458	$self->activate;
		1459	}
		1460
		1461	$self->post_load;
		1462
		1463	$self->in_memory (cf::MAP_IN_MEMORY);
		1464	}
		1465
		1466	sub customise_for {
		1467	my ($self, $ob) = @_;
		1468
		1469	return find "~" . $ob->name . "/" . $self->{path}
		1470	if $self->per_player;
		1471
		1472	$self
		1473	}
		1474
		1475	# find and load all maps in the 3x3 area around a map
		1476	sub load_diag {
738	my ($map) = @_;	1477	my ($map) = @_;
739		1478
740	my $path = $map->tmpname;	1479	my @diag; # diagonal neighbours
741	defined $path or return;
742		1480
743	unlink "$path.pst";	1481	for (0 .. 3) {
744	};	1482	my $neigh = $map->tile_path ($_)
		1483	or next;
		1484	$neigh = find $neigh, $map
		1485	or next;
		1486	$neigh->load;
745		1487
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	1488	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1489	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1490	}
747		1491
748	#############################################################################	1492	for (@diag) {
749	# load/save perl data associated with player->ob objects	1493	my $neigh = find @$_
750		1494	or next;
751	sub all_objects(@) {	1495	$neigh->load;
752	@_, map all_objects ($_->inv), @_	1496	}
753	}	1497	}
754		1498
755	# TODO: compatibility cruft, remove when no longer needed	1499	sub find_sync {
756	attach_to_players	1500	my ($path, $origin) = @_;
757	on_load => sub {
758	my ($pl, $path) = @_;
759		1501
760	for my $o (all_objects $pl->ob) {	1502	cf::sync_job { find $path, $origin }
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1503	}
762	$o->set_ob_key_value ("_perl_data");
763		1504
764	%$o = %{ Storable::thaw pack "H*", $value };	1505	sub do_load_sync {
		1506	my ($map) = @_;
		1507
		1508	cf::sync_job { $map->load };
		1509	}
		1510
		1511	our %MAP_PREFETCH;
		1512	our $MAP_PREFETCHER = undef;
		1513
		1514	sub find_async {
		1515	my ($path, $origin) = @_;
		1516
		1517	$path = normalise $path, $origin && $origin->{path};
		1518
		1519	if (my $map = $cf::MAP{$path}) {
		1520	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1521	}
		1522
		1523	undef $MAP_PREFETCH{$path};
		1524	$MAP_PREFETCHER ||= cf::async {
		1525	while (%MAP_PREFETCH) {
		1526	for my $path (keys %MAP_PREFETCH) {
		1527	my $map = find $path
		1528	or next;
		1529	$map->load;
		1530
		1531	delete $MAP_PREFETCH{$path};
765	}	1532	}
766	}	1533	}
		1534	undef $MAP_PREFETCHER;
		1535	};
		1536	$MAP_PREFETCHER->prio (6);
		1537
		1538	()
		1539	}
		1540
		1541	sub save {
		1542	my ($self) = @_;
		1543
		1544	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1545
		1546	$self->{last_save} = $cf::RUNTIME;
		1547
		1548	return unless $self->dirty;
		1549
		1550	my $save = $self->save_path; utf8::encode $save;
		1551	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1552
		1553	$self->{load_path} = $save;
		1554
		1555	return if $self->{deny_save};
		1556
		1557	local $self->{last_access} = $self->last_access;#d#
		1558
		1559	cf::async {
		1560	$_->contr->save for $self->players;
		1561	};
		1562
		1563	if ($uniq) {
		1564	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1565	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1566	} else {
		1567	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
767	},	1568	}
768	;	1569	}
769		1570
770	#############################################################################	1571	sub swap_out {
		1572	my ($self) = @_;
771		1573
772	=head2 CORE EXTENSIONS	1574	# save first because save cedes
		1575	$self->save;
773		1576
774	Functions and methods that extend core crossfire objects.	1577	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1578
		1579	return if $self->players;
		1580	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1581	return if $self->{deny_save};
		1582
		1583	$self->clear;
		1584	$self->in_memory (cf::MAP_SWAPPED);
		1585	}
		1586
		1587	sub reset_at {
		1588	my ($self) = @_;
		1589
		1590	# TODO: safety, remove and allow resettable per-player maps
		1591	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1592	return 1e99 if $self->{deny_reset};
		1593
		1594	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1595	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1596
		1597	$time + $to
		1598	}
		1599
		1600	sub should_reset {
		1601	my ($self) = @_;
		1602
		1603	$self->reset_at <= $cf::RUNTIME
		1604	}
		1605
		1606	sub reset {
		1607	my ($self) = @_;
		1608
		1609	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1610
		1611	return if $self->players;
		1612	return if $self->isa ("ext::map_per_player");#d#
		1613
		1614	warn "resetting map ", $self->path;#d#
		1615
		1616	$self->in_memory (cf::MAP_SWAPPED);
		1617
		1618	# need to save uniques path
		1619	unless ($self->{deny_save}) {
		1620	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1621
		1622	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1623	if $uniq;
		1624	}
		1625
		1626	delete $cf::MAP{$self->path};
		1627
		1628	$self->clear;
		1629
		1630	$_->clear_links_to ($self) for values %cf::MAP;
		1631
		1632	$self->unlink_save;
		1633	$self->destroy;
		1634	}
		1635
		1636	my $nuke_counter = "aaaa";
		1637
		1638	sub nuke {
		1639	my ($self) = @_;
		1640
		1641	delete $cf::MAP{$self->path};
		1642
		1643	$self->unlink_save;
		1644
		1645	bless $self, "cf::map";
		1646	delete $self->{deny_reset};
		1647	$self->{deny_save} = 1;
		1648	$self->reset_timeout (1);
		1649	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1650
		1651	$cf::MAP{$self->path} = $self;
		1652
		1653	$self->reset; # polite request, might not happen
		1654	}
		1655
		1656	=item cf::map::unique_maps
		1657
		1658	Returns an arrayref of paths of all shared maps that have
		1659	instantiated unique items. May block.
		1660
		1661	=cut
		1662
		1663	sub unique_maps() {
		1664	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1665	or return;
		1666
		1667	my @paths;
		1668
		1669	for (@$files) {
		1670	utf8::decode $_;
		1671	next if /\.pst$/;
		1672	next unless /^$PATH_SEP/o;
		1673
		1674	push @paths, cf::map::normalise $_;
		1675	}
		1676
		1677	\@paths
		1678	}
		1679
		1680	package cf;
		1681
		1682	=back
		1683
		1684	=head3 cf::object
		1685
		1686	=cut
		1687
		1688	package cf::object;
775		1689
776	=over 4	1690	=over 4
777		1691
778	=item cf::player::exists $login	1692	=item $ob->inv_recursive
779		1693
780	Returns true when the given account exists.	1694	Returns the inventory of the object _and_ their inventories, recursively.
781		1695
782	=cut	1696	=cut
783		1697
784	sub cf::player::exists($) {	1698	sub inv_recursive_;
785	cf::player::find $_[0]	1699	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1700	map { $_, inv_recursive_ $_->inv } @_
787	}	1701	}
		1702
		1703	sub inv_recursive {
		1704	inv_recursive_ inv $_[0]
		1705	}
		1706
		1707	package cf;
		1708
		1709	=back
		1710
		1711	=head3 cf::object::player
		1712
		1713	=over 4
788		1714
789	=item $player_object->reply ($npc, $msg[, $flags])	1715	=item $player_object->reply ($npc, $msg[, $flags])
790		1716
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1717	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	1718	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		1720
795	=cut	1721	=cut
796		1722
797	# rough implementation of a future "reply" method that works	1723	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	1724	# with dialog boxes.
		1725	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	1726	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	1727	my ($self, $npc, $msg, $flags) = @_;
801		1728
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1729	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		1730
…		…
807	$msg = $npc->name . " says: $msg" if $npc;	1734	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	1735	$self->message ($msg, $flags);
809	}	1736	}
810	}	1737	}
811		1738
812	=item $player->ext_reply ($msgid, $msgtype, %msg)
813
814	Sends an ext reply to the player.
815
816	=cut
817
818	sub cf::player::ext_reply($$$%) {
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")	1739	=item $player_object->may ("access")
827		1740
828	Returns wether the given player is authorized to access resource "access"	1741	Returns wether the given player is authorized to access resource "access"
829	(e.g. "command_wizcast").	1742	(e.g. "command_wizcast").
830		1743
…		…
837	(ref $cf::CFG{"may_$access"}	1750	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1751	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	1752	: $cf::CFG{"may_$access"})
840	}	1753	}
841		1754
842	=cut	1755	=item $player_object->enter_link
843		1756
844	#############################################################################	1757	Freezes the player and moves him/her to a special map (C<{link}>).
		1758
		1759	The player should be reasonably safe there for short amounts of time. You
		1760	I<MUST> call C<leave_link> as soon as possible, though.
		1761
		1762	Will never block.
		1763
		1764	=item $player_object->leave_link ($map, $x, $y)
		1765
		1766	Moves the player out of the special C<{link}> map onto the specified
		1767	map. If the map is not valid (or omitted), the player will be moved back
		1768	to the location he/she was before the call to C<enter_link>, or, if that
		1769	fails, to the emergency map position.
		1770
		1771	Might block.
		1772
		1773	=cut
		1774
		1775	sub link_map {
		1776	unless ($LINK_MAP) {
		1777	$LINK_MAP = cf::map::find "{link}"
		1778	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1779	$LINK_MAP->load;
		1780	}
		1781
		1782	$LINK_MAP
		1783	}
		1784
		1785	sub cf::object::player::enter_link {
		1786	my ($self) = @_;
		1787
		1788	$self->deactivate_recursive;
		1789
		1790	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1791
		1792	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1793	if $self->map;
		1794
		1795	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1796	}
		1797
		1798	sub cf::object::player::leave_link {
		1799	my ($self, $map, $x, $y) = @_;
		1800
		1801	my $link_pos = delete $self->{_link_pos};
		1802
		1803	unless ($map) {
		1804	# restore original map position
		1805	($map, $x, $y) = @{ $link_pos || [] };
		1806	$map = cf::map::find $map;
		1807
		1808	unless ($map) {
		1809	($map, $x, $y) = @$EMERGENCY_POSITION;
		1810	$map = cf::map::find $map
		1811	or die "FATAL: cannot load emergency map\n";
		1812	}
		1813	}
		1814
		1815	($x, $y) = (-1, -1)
		1816	unless (defined $x) && (defined $y);
		1817
		1818	# use -1 or undef as default coordinates, not 0, 0
		1819	($x, $y) = ($map->enter_x, $map->enter_y)
		1820	if $x <=0 && $y <= 0;
		1821
		1822	$map->load;
		1823	$map->load_diag;
		1824
		1825	return unless $self->contr->active;
		1826	$self->activate_recursive;
		1827	$self->enter_map ($map, $x, $y);
		1828	}
		1829
		1830	cf::player->attach (
		1831	on_logout => sub {
		1832	my ($pl) = @_;
		1833
		1834	# abort map switching before logout
		1835	if ($pl->ob->{_link_pos}) {
		1836	cf::sync_job {
		1837	$pl->ob->leave_link
		1838	};
		1839	}
		1840	},
		1841	on_login => sub {
		1842	my ($pl) = @_;
		1843
		1844	# try to abort aborted map switching on player login :)
		1845	# should happen only on crashes
		1846	if ($pl->ob->{_link_pos}) {
		1847	$pl->ob->enter_link;
		1848	(async {
		1849	# we need this sleep as the login has a concurrent enter_exit running
		1850	# and this sleep increases chances of the player not ending up in scorn
		1851	$pl->ob->reply (undef,
		1852	"There was an internal problem at your last logout, "
		1853	. "the server will try to bring you to your intended destination in a second.",
		1854	cf::NDI_RED);
		1855	Coro::Timer::sleep 1;
		1856	$pl->ob->leave_link;
		1857	})->prio (2);
		1858	}
		1859	},
		1860	);
		1861
		1862	=item $player_object->goto ($path, $x, $y)
		1863
		1864	=cut
		1865
		1866	sub cf::object::player::goto {
		1867	my ($self, $path, $x, $y) = @_;
		1868
		1869	$self->enter_link;
		1870
		1871	(async {
		1872	my $map = eval {
		1873	my $map = cf::map::find $path;
		1874	$map = $map->customise_for ($self) if $map;
		1875	$map
		1876	} or
		1877	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1878
		1879	$self->leave_link ($map, $x, $y);
		1880	})->prio (1);
		1881	}
		1882
		1883	=item $player_object->enter_exit ($exit_object)
		1884
		1885	=cut
		1886
		1887	sub parse_random_map_params {
		1888	my ($spec) = @_;
		1889
		1890	my $rmp = { # defaults
		1891	xsize => (cf::rndm 15, 40),
		1892	ysize => (cf::rndm 15, 40),
		1893	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1894	#layout => string,
		1895	};
		1896
		1897	for (split /\n/, $spec) {
		1898	my ($k, $v) = split /\s+/, $_, 2;
		1899
		1900	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1901	}
		1902
		1903	$rmp
		1904	}
		1905
		1906	sub prepare_random_map {
		1907	my ($exit) = @_;
		1908
		1909	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1910
		1911	# all this does is basically replace the /! path by
		1912	# a new random map path (?random/...) with a seed
		1913	# that depends on the exit object
		1914
		1915	my $rmp = parse_random_map_params $exit->msg;
		1916
		1917	if ($exit->map) {
		1918	$rmp->{region} = $exit->region->name;
		1919	$rmp->{origin_map} = $exit->map->path;
		1920	$rmp->{origin_x} = $exit->x;
		1921	$rmp->{origin_y} = $exit->y;
		1922	}
		1923
		1924	$rmp->{random_seed} ||= $exit->random_seed;
		1925
		1926	my $data = cf::to_json $rmp;
		1927	my $md5 = Digest::MD5::md5_hex $data;
		1928	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1929
		1930	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1931	aio_write $fh, 0, (length $data), $data, 0;
		1932	undef $fh;
		1933	aio_rename "$meta~", $meta;
		1934
		1935	$exit->slaying ("?random/$md5");
		1936	$exit->msg (undef);
		1937	}
		1938	}
		1939
		1940	sub cf::object::player::enter_exit {
		1941	my ($self, $exit) = @_;
		1942
		1943	return unless $self->type == cf::PLAYER;
		1944
		1945	if ($exit->slaying eq "/!") {
		1946	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1947	cf::sync_job { prepare_random_map $exit };
		1948	}
		1949
		1950	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1951	my $hp = $exit->stats->hp;
		1952	my $sp = $exit->stats->sp;
		1953
		1954	$self->enter_link;
		1955
		1956	(async {
		1957	$self->deactivate_recursive; # just to be sure
		1958	unless (eval {
		1959	$self->goto ($slaying, $hp, $sp);
		1960
		1961	1;
		1962	}) {
		1963	$self->message ("Something went wrong deep within the crossfire server. "
		1964	. "I'll try to bring you back to the map you were before. "
		1965	. "Please report this to the dungeon master!",
		1966	cf::NDI_UNIQUE | cf::NDI_RED);
		1967
		1968	warn "ERROR in enter_exit: $@";
		1969	$self->leave_link;
		1970	}
		1971	})->prio (1);
		1972	}
		1973
		1974	=head3 cf::client
		1975
		1976	=over 4
		1977
		1978	=item $client->send_drawinfo ($text, $flags)
		1979
		1980	Sends a drawinfo packet to the client. Circumvents output buffering so
		1981	should not be used under normal circumstances.
		1982
		1983	=cut
		1984
		1985	sub cf::client::send_drawinfo {
		1986	my ($self, $text, $flags) = @_;
		1987
		1988	utf8::encode $text;
		1989	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1990	}
		1991
		1992
		1993	=item $success = $client->query ($flags, "text", \&cb)
		1994
		1995	Queues a query to the client, calling the given callback with
		1996	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1997	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1998
		1999	Queries can fail, so check the return code. Or don't, as queries will become
		2000	reliable at some point in the future.
		2001
		2002	=cut
		2003
		2004	sub cf::client::query {
		2005	my ($self, $flags, $text, $cb) = @_;
		2006
		2007	return unless $self->state == ST_PLAYING
		2008	|| $self->state == ST_SETUP
		2009	|| $self->state == ST_CUSTOM;
		2010
		2011	$self->state (ST_CUSTOM);
		2012
		2013	utf8::encode $text;
		2014	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2015
		2016	$self->send_packet ($self->{query_queue}[0][0])
		2017	if @{ $self->{query_queue} } == 1;
		2018	}
		2019
		2020	cf::client->attach (
		2021	on_reply => sub {
		2022	my ($ns, $msg) = @_;
		2023
		2024	# this weird shuffling is so that direct followup queries
		2025	# get handled first
		2026	my $queue = delete $ns->{query_queue}
		2027	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2028
		2029	(shift @$queue)->[1]->($msg);
		2030	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2031
		2032	push @{ $ns->{query_queue} }, @$queue;
		2033
		2034	if (@{ $ns->{query_queue} } == @$queue) {
		2035	if (@$queue) {
		2036	$ns->send_packet ($ns->{query_queue}[0][0]);
		2037	} else {
		2038	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2039	}
		2040	}
		2041	},
		2042	);
		2043
		2044	=item $client->async (\&cb)
		2045
		2046	Create a new coroutine, running the specified callback. The coroutine will
		2047	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2048	or loss of connection).
		2049
		2050	=cut
		2051
		2052	sub cf::client::async {
		2053	my ($self, $cb) = @_;
		2054
		2055	my $coro = &Coro::async ($cb);
		2056
		2057	$coro->on_destroy (sub {
		2058	delete $self->{_coro}{$coro+0};
		2059	});
		2060
		2061	$self->{_coro}{$coro+0} = $coro;
		2062
		2063	$coro
		2064	}
		2065
		2066	cf::client->attach (
		2067	on_destroy => sub {
		2068	my ($ns) = @_;
		2069
		2070	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2071	},
		2072	);
		2073
		2074	=back
		2075
845		2076
846	=head2 SAFE SCRIPTING	2077	=head2 SAFE SCRIPTING
847		2078
848	Functions that provide a safe environment to compile and execute	2079	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	2080	snippets of perl code without them endangering the safety of the server
…		…
864		2095
865	=pod	2096	=pod
866		2097
867	The following fucntions and emthods are available within a safe environment:	2098	The following fucntions and emthods are available within a safe environment:
868		2099
869	cf::object contr pay_amount pay_player	2100	cf::object contr pay_amount pay_player map
870	cf::object::player player	2101	cf::object::player player
871	cf::player peaceful	2102	cf::player peaceful
		2103	cf::map trigger
872		2104
873	=cut	2105	=cut
874		2106
875	for (	2107	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	2108	["cf::object" => qw(contr pay_amount pay_player map)],
877	["cf::object::player" => qw(player)],	2109	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	2110	["cf::player" => qw(peaceful)],
		2111	["cf::map" => qw(trigger)],
879	) {	2112	) {
880	no strict 'refs';	2113	no strict 'refs';
881	my ($pkg, @funs) = @$_;	2114	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2115	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	2116	for @funs;
…		…
963	The parameter C<$family> should best start with the name of the extension	2196	The parameter C<$family> should best start with the name of the extension
964	using it, it should be unique.	2197	using it, it should be unique.
965		2198
966	=over 4	2199	=over 4
967		2200
968	=item $hashref = cf::db_get $family
969
970	Return a hashref for use by the extension C<$family>, which can be
971	modified. After modifications, you have to call C<cf::db_dirty> or
972	C<cf::db_sync>.
973
974	=item $value = cf::db_get $family => $key	2201	=item $value = cf::db_get $family => $key
975		2202
976	Returns a single value from the database	2203	Returns a single value from the database.
977
978	=item cf::db_put $family => $hashref
979
980	Stores the given family hashref into the database. Updates are delayed, if
981	you want the data to be synced to disk immediately, use C<cf::db_sync>.
982		2204
983	=item cf::db_put $family => $key => $value	2205	=item cf::db_put $family => $key => $value
984		2206
985	Stores the given C<$value> in the family hash. Updates are delayed, if you	2207	Stores the given C<$value> in the family.
986	want the data to be synced to disk immediately, use C<cf::db_sync>.
987
988	=item cf::db_dirty
989
990	Marks the database as dirty, to be updated at a later time.
991
992	=item cf::db_sync
993
994	Immediately write the database to disk I<if it is dirty>.
995		2208
996	=cut	2209	=cut
997		2210
998	our $DB;	2211	our $DB;
999		2212
1000	{	2213	sub db_init {
		2214	unless ($DB) {
		2215	$DB = BDB::db_create $DB_ENV;
		2216
		2217	cf::sync_job {
		2218	eval {
		2219	$DB->set_flags (BDB::CHKSUM);
		2220
		2221	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2222	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2223	cf::cleanup "db_open(db): $!" if $!;
		2224	};
		2225	cf::cleanup "db_open(db): $@" if $@;
		2226	};
		2227
1001	my $path = cf::localdir . "/database.pst";	2228	my $path = cf::localdir . "/database.pst";
		2229	if (stat $path) {
		2230	cf::sync_job {
		2231	my $pst = Storable::retrieve $path;
1002		2232
1003	sub db_load() {	2233	cf::db_put (board => data => $pst->{board});
1004	warn "loading database $path\n";#d# remove later	2234	cf::db_put (guildrules => data => $pst->{guildrules});
1005	$DB = stat $path ? Storable::retrieve $path : { };	2235	cf::db_put (rent => balance => $pst->{rent}{balance});
1006	}	2236	BDB::db_env_txn_checkpoint $DB_ENV;
1007		2237
1008	my $pid;	2238	unlink $path;
1009
1010	sub db_save() {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;
1017	cf::_exit 0 if defined $pid;
1018	}	2239	};
1019	}
1020
1021	my $dirty;
1022
1023	sub db_sync() {
1024	db_save if $dirty;
1025	undef $dirty;
1026	}
1027
1028	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1029	db_sync;
1030	});
1031
1032	sub db_dirty() {
1033	$dirty = 1;
1034	$idle->start;
1035	}
1036
1037	sub db_get($;$) {
1038	@_ >= 2
1039	? $DB->{$_[0]}{$_[1]}
1040	: ($DB->{$_[0]} ||= { })
1041	}
1042
1043	sub db_put($$;$) {
1044	if (@_ >= 3) {
1045	$DB->{$_[0]}{$_[1]} = $_[2];
1046	} else {
1047	$DB->{$_[0]} = $_[1];
1048	}
1049	db_dirty;
1050	}
1051
1052	attach_global
1053	prio => 10000,
1054	on_cleanup => sub {
1055	db_sync;
1056	},	2240	}
1057	;	2241	}
		2242	}
		2243
		2244	sub db_get($$) {
		2245	my $key = "$_[0]/$_[1]";
		2246
		2247	cf::sync_job {
		2248	BDB::db_get $DB, undef, $key, my $data;
		2249
		2250	$! ? ()
		2251	: Compress::LZF::sthaw $data
		2252	}
		2253	}
		2254
		2255	sub db_put($$$) {
		2256	BDB::dbreq_pri 4;
		2257	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
1058	}	2258	}
1059		2259
1060	#############################################################################	2260	#############################################################################
1061	# the server's main()	2261	# the server's init and main functions
		2262
		2263	sub load_resources {
		2264	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2265	or die "unable to load regions file\n";#d#
		2266	}
1062		2267
1063	sub cfg_load {	2268	sub cfg_load {
1064	open my $fh, "<:utf8", cf::confdir . "/config"	2269	open my $fh, "<:utf8", cf::confdir . "/config"
1065	or return;	2270	or return;
1066		2271
1067	local $/;	2272	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	2273	*CFG = YAML::Syck::Load <$fh>;
		2274
		2275	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2276
		2277	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2278	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2279
		2280	if (exists $CFG{mlockall}) {
		2281	eval {
		2282	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2283	and die "WARNING: m(un)lockall failed: $!\n";
		2284	};
		2285	warn $@ if $@;
		2286	}
		2287	}
		2288
		2289	sub init {
		2290	load_resources;
1069	}	2291	}
1070		2292
1071	sub main {	2293	sub main {
		2294	# we must not ever block the main coroutine
		2295	local $Coro::idle = sub {
		2296	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2297	(async {
		2298	Event::one_event;
		2299	})->prio (Coro::PRIO_MAX);
		2300	};
		2301
1072	cfg_load;	2302	cfg_load;
1073	db_load;	2303	db_init;
1074	load_extensions;	2304	load_extensions;
		2305
		2306	$TICK_WATCHER->start;
1075	Event::loop;	2307	Event::loop;
1076	}	2308	}
1077		2309
1078	#############################################################################	2310	#############################################################################
1079	# initialisation	2311	# initialisation and cleanup
1080		2312
		2313	# install some emergency cleanup handlers
		2314	BEGIN {
		2315	for my $signal (qw(INT HUP TERM)) {
		2316	Event->signal (
		2317	reentrant => 0,
		2318	data => WF_AUTOCANCEL,
		2319	signal => $signal,
		2320	prio => 0,
		2321	cb => sub {
		2322	cf::cleanup "SIG$signal";
		2323	},
		2324	);
		2325	}
		2326	}
		2327
		2328	sub emergency_save() {
		2329	my $freeze_guard = cf::freeze_mainloop;
		2330
		2331	warn "enter emergency perl save\n";
		2332
		2333	cf::sync_job {
		2334	# use a peculiar iteration method to avoid tripping on perl
		2335	# refcount bugs in for. also avoids problems with players
		2336	# and maps saved/destroyed asynchronously.
		2337	warn "begin emergency player save\n";
		2338	for my $login (keys %cf::PLAYER) {
		2339	my $pl = $cf::PLAYER{$login} or next;
		2340	$pl->valid or next;
		2341	$pl->save;
		2342	}
		2343	warn "end emergency player save\n";
		2344
		2345	warn "begin emergency map save\n";
		2346	for my $path (keys %cf::MAP) {
		2347	my $map = $cf::MAP{$path} or next;
		2348	$map->valid or next;
		2349	$map->save;
		2350	}
		2351	warn "end emergency map save\n";
		2352
		2353	warn "begin emergency database checkpoint\n";
		2354	BDB::db_env_txn_checkpoint $DB_ENV;
		2355	warn "end emergency database checkpoint\n";
		2356	};
		2357
		2358	warn "leave emergency perl save\n";
		2359	}
		2360
		2361	sub post_cleanup {
		2362	my ($make_core) = @_;
		2363
		2364	warn Carp::longmess "post_cleanup backtrace"
		2365	if $make_core;
		2366	}
		2367
1081	sub _perl_reload(&) {	2368	sub reload() {
1082	my ($msg) = @_;	2369	# can/must only be called in main
		2370	if ($Coro::current != $Coro::main) {
		2371	warn "can only reload from main coroutine";
		2372	return;
		2373	}
1083		2374
1084	$msg->("reloading...");	2375	warn "reloading...";
		2376
		2377	warn "cancelling server ticker";
		2378	$TICK_WATCHER->cancel;
		2379
		2380	cf::emergency_save;
1085		2381
1086	eval {	2382	eval {
1087	# cancel all watchers	2383	# if anything goes wrong in here, we should simply crash as we already saved
		2384
		2385	warn "cancelling all WF_AUTOCANCEL watchers";
1088	$_->cancel for Event::all_watchers;	2386	for (Event::all_watchers) {
		2387	$_->cancel if $_->data & WF_AUTOCANCEL;
		2388	}
1089		2389
1090	# unload all extensions	2390	warn "syncing database to disk";
		2391	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		2392
		2393	warn "flushing outstanding aio requests";
1091	for (@exts) {	2394	for (;;) {
1092	$msg->("unloading <$_>");	2395	BDB::flush;
1093	unload_extension $_;	2396	IO::AIO::flush;
		2397	Coro::cede;
		2398	last unless IO::AIO::nreqs || BDB::nreqs;
		2399	warn "iterate...";
		2400	}
		2401
		2402	warn "cancelling all extension coros";
		2403	$_->cancel for values %EXT_CORO;
		2404	%EXT_CORO = ();
		2405
		2406	warn "removing commands";
		2407	%COMMAND = ();
		2408
		2409	warn "removing ext commands";
		2410	%EXTCMD = ();
		2411
		2412	warn "unloading/nuking all extensions";
		2413	for my $pkg (@EXTS) {
		2414	warn "... unloading $pkg";
		2415
		2416	if (my $cb = $pkg->can ("unload")) {
		2417	eval {
		2418	$cb->($pkg);
		2419	1
		2420	} or warn "$pkg unloaded, but with errors: $@";
1094	}	2421	}
1095		2422
		2423	warn "... nuking $pkg";
		2424	Symbol::delete_package $pkg;
		2425	}
		2426
1096	# unload all modules loaded from $LIBDIR	2427	warn "unloading all perl modules loaded from $LIBDIR";
1097	while (my ($k, $v) = each %INC) {	2428	while (my ($k, $v) = each %INC) {
1098	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2429	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1099		2430
1100	$msg->("removing <$k>");	2431	warn "... unloading $k";
1101	delete $INC{$k};	2432	delete $INC{$k};
1102		2433
1103	$k =~ s/\.pm$//;	2434	$k =~ s/\.pm$//;
1104	$k =~ s/\//::/g;	2435	$k =~ s/\//::/g;
1105		2436
…		…
1108	}	2439	}
1109		2440
1110	Symbol::delete_package $k;	2441	Symbol::delete_package $k;
1111	}	2442	}
1112		2443
1113	# sync database to disk
1114	cf::db_sync;
1115
1116	# get rid of safe::, as good as possible	2444	warn "getting rid of safe::, as good as possible";
1117	Symbol::delete_package "safe::$_"	2445	Symbol::delete_package "safe::$_"
1118	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2446	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1119		2447
1120	# remove register_script_function callbacks
1121	# TODO
1122
1123	# unload cf.pm "a bit"	2448	warn "unloading cf.pm \"a bit\"";
1124	delete $INC{"cf.pm"};	2449	delete $INC{"cf.pm"};
1125		2450
1126	# don't, removes xs symbols, too,	2451	# don't, removes xs symbols, too,
1127	# and global variables created in xs	2452	# and global variables created in xs
1128	#Symbol::delete_package __PACKAGE__;	2453	#Symbol::delete_package __PACKAGE__;
1129		2454
1130	# reload cf.pm	2455	warn "unload completed, starting to reload now";
		2456
1131	$msg->("reloading cf.pm");	2457	warn "reloading cf.pm";
1132	require cf;	2458	require cf;
		2459	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1133		2460
1134	# load config and database again	2461	warn "loading config and database again";
1135	cf::cfg_load;	2462	cf::cfg_load;
1136	cf::db_load;
1137		2463
1138	# load extensions	2464	warn "loading extensions";
1139	$msg->("load extensions");
1140	cf::load_extensions;	2465	cf::load_extensions;
1141		2466
1142	# reattach attachments to objects	2467	warn "reattaching attachments to objects/players";
1143	$msg->("reattach");
1144	_global_reattach;	2468	_global_reattach;
		2469	warn "reattaching attachments to maps";
		2470	reattach $_ for values %MAP;
		2471
		2472	warn "loading reloadable resources";
		2473	load_resources;
		2474
		2475	warn "restarting server ticker";
		2476
		2477	$TICK_WATCHER->start;
1145	};	2478	};
1146	$msg->($@) if $@;
1147		2479
1148	$msg->("reloaded");	2480	if ($@) {
		2481	warn $@;
		2482	warn "error while reloading, exiting.";
		2483	exit 1;
		2484	}
		2485
		2486	warn "reloaded";
1149	};	2487	};
1150		2488
1151	sub perl_reload() {	2489	our $RELOAD_WATCHER; # used only during reload
1152	_perl_reload {
1153	warn $_[0];
1154	print "$_[0]\n";
1155	};
1156	}
1157		2490
1158	register "<global>", __PACKAGE__;
1159
1160	register_command "perl-reload" => sub {	2491	register_command "reload" => sub {
1161	my ($who, $arg) = @_;	2492	my ($who, $arg) = @_;
1162		2493
1163	if ($who->flag (FLAG_WIZ)) {	2494	if ($who->flag (FLAG_WIZ)) {
1164	_perl_reload {	2495	$who->message ("reloading server.");
1165	warn $_[0];	2496
1166	$who->message ($_[0]);	2497	# doing reload synchronously and two reloads happen back-to-back,
		2498	# coro crashes during coro_state_free->destroy here.
		2499
		2500	$RELOAD_WATCHER ||= Event->timer (
		2501	reentrant => 0,
		2502	after => 0,
		2503	data => WF_AUTOCANCEL,
		2504	cb => sub {
		2505	reload;
		2506	undef $RELOAD_WATCHER;
		2507	},
1167	};	2508	);
1168	}	2509	}
1169	};	2510	};
1170		2511
1171	unshift @INC, $LIBDIR;	2512	unshift @INC, $LIBDIR;
1172		2513
		2514	my $bug_warning = 0;
		2515
1173	$TICK_WATCHER = Event->timer (	2516	$TICK_WATCHER = Event->timer (
		2517	reentrant => 0,
		2518	parked => 1,
1174	prio => 1,	2519	prio => 0,
1175	async => 1,
1176	at => $NEXT_TICK || 1,	2520	at => $NEXT_TICK || $TICK,
		2521	data => WF_AUTOCANCEL,
1177	cb => sub {	2522	cb => sub {
		2523	if ($Coro::current != $Coro::main) {
		2524	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2525	unless ++$bug_warning > 10;
		2526	return;
		2527	}
		2528
		2529	$NOW = Event::time;
		2530
1178	cf::server_tick; # one server iteration	2531	cf::server_tick; # one server iteration
1179		2532	$RUNTIME += $TICK;
1180	my $NOW = Event::time;
1181	$NEXT_TICK += $TICK;	2533	$NEXT_TICK += $TICK;
1182		2534
		2535	$WAIT_FOR_TICK->broadcast;
		2536	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2537
		2538	Event::sweep;
		2539	Coro::cede_notself;
		2540
		2541	# my $AFTER = Event::time;
		2542	# warn $AFTER - $NOW;#d#
		2543
1183	# if we are delayed by four ticks or more, skip them all	2544	# if we are delayed by four ticks or more, skip them all
1184	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2545	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1185		2546
1186	$TICK_WATCHER->at ($NEXT_TICK);	2547	$TICK_WATCHER->at ($NEXT_TICK);
1187	$TICK_WATCHER->start;	2548	$TICK_WATCHER->start;
1188	},	2549	},
1189	);	2550	);
1190		2551
		2552	{
		2553	BDB::max_poll_time $TICK * 0.1;
		2554	$BDB_POLL_WATCHER = Event->io (
		2555	reentrant => 0,
		2556	fd => BDB::poll_fileno,
		2557	poll => 'r',
		2558	prio => 0,
		2559	data => WF_AUTOCANCEL,
		2560	cb => \&BDB::poll_cb,
		2561	);
		2562	BDB::min_parallel 8;
		2563
		2564	BDB::set_sync_prepare {
		2565	my $status;
		2566	my $current = $Coro::current;
		2567	(
		2568	sub {
		2569	$status = $!;
		2570	$current->ready; undef $current;
		2571	},
		2572	sub {
		2573	Coro::schedule while defined $current;
		2574	$! = $status;
		2575	},
		2576	)
		2577	};
		2578
		2579	unless ($DB_ENV) {
		2580	$DB_ENV = BDB::db_env_create;
		2581
		2582	cf::sync_job {
		2583	eval {
		2584	BDB::db_env_open
		2585	$DB_ENV,
		2586	$BDB_ENV_DIR,
		2587	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2588	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2589	0666;
		2590
		2591	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2592
		2593	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2594	$DB_ENV->set_lk_detect;
		2595	};
		2596
		2597	cf::cleanup "db_env_open(db): $@" if $@;
		2598	};
		2599	}
		2600	}
		2601
		2602	{
		2603	IO::AIO::min_parallel 8;
		2604
		2605	undef $Coro::AIO::WATCHER;
1191	IO::AIO::max_poll_time $TICK * 0.2;	2606	IO::AIO::max_poll_time $TICK * 0.1;
1192		2607	$AIO_POLL_WATCHER = Event->io (
1193	Event->io (fd => IO::AIO::poll_fileno,	2608	reentrant => 0,
		2609	fd => IO::AIO::poll_fileno,
1194	poll => 'r',	2610	poll => 'r',
1195	prio => 5,	2611	prio => 6,
		2612	data => WF_AUTOCANCEL,
1196	cb => \&IO::AIO::poll_cb);	2613	cb => \&IO::AIO::poll_cb,
		2614	);
		2615	}
		2616
		2617	$WRITE_RUNTIME_WATCHER = Event->timer (
		2618	reentrant => 0,
		2619	data => WF_AUTOCANCEL,
		2620	after => 1,
		2621	interval => 10,
		2622	prio => 6, # keep it lowest so it acts like a watchdog
		2623	cb => Coro::unblock_sub {
		2624	write_runtime
		2625	or warn "ERROR: unable to write runtime file: $!";
		2626	},
		2627	);
		2628
		2629	END { cf::emergency_save }
1197		2630
1198	1	2631	1
1199		2632

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