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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.92 by root, Thu Dec 21 06:42:28 2006 UTC vs.
Revision 1.231 by root, Wed Apr 4 00:02:06 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;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
10	use IO::AIO ();	14	use Coro 3.52 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21
		22	use BDB ();
		23	use Data::Dumper;
		24	use Digest::MD5;
		25	use Fcntl;
11	use YAML::Syck ();	26	use YAML::Syck ();
		27	use IO::AIO 2.32 ();
12	use Time::HiRes;	28	use Time::HiRes;
13	use Event;	29	use Compress::LZF;
		30
		31	# configure various modules to our taste
		32	#
		33	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		34	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		35
14	$Event::Eval = 1; # no idea why this is required, but it is	36	$Event::Eval = 1; # no idea why this is required, but it is
15		37
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	38	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	39	$YAML::Syck::ImplicitUnicode = 1;
18		40
19	use strict;	41	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		42
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	43	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		44
23	our %COMMAND = ();	45	our %COMMAND = ();
24	our %COMMAND_TIME = ();	46	our %COMMAND_TIME = ();
		47
		48	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	49	our %EXTCMD = ();
		50	our %EXT_CORO = (); # coroutines bound to extensions
		51	our %EXT_MAP = (); # pluggable maps
26		52
27	_init_vars;	53	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	54	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	55	our $LIBDIR = datadir . "/ext";
31		56
32	our $TICK = MAX_TIME * 1e-6;	57	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	58	our $TICK_WATCHER;
		59	our $AIO_POLL_WATCHER;
		60	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	61	our $NEXT_TICK;
		62	our $NOW;
		63	our $USE_FSYNC = 1; # use fsync to write maps - default off
		64
		65	our $BDB_POLL_WATCHER;
		66	our $DB_ENV;
35		67
36	our %CFG;	68	our %CFG;
37		69
38	our $UPTIME; $UPTIME ||= time;	70	our $UPTIME; $UPTIME ||= time;
		71	our $RUNTIME;
		72
		73	our %PLAYER; # all users
		74	our %MAP; # all maps
		75	our $LINK_MAP; # the special {link} map, which is always available
		76	our $RANDOM_MAPS = cf::localdir . "/random";
		77	our $BDB_ENV_DIR = cf::localdir . "/db";
		78
		79	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		80	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		81
		82	# used to convert map paths into valid unix filenames by replacing / by ∕
		83	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		84
		85	binmode STDOUT;
		86	binmode STDERR;
		87
		88	# read virtual server time, if available
		89	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		90	open my $fh, "<", cf::localdir . "/runtime"
		91	or die "unable to read runtime file: $!";
		92	$RUNTIME = <$fh> + 0.;
		93	}
		94
		95	mkdir cf::localdir;
		96	mkdir cf::localdir . "/" . cf::playerdir;
		97	mkdir cf::localdir . "/" . cf::tmpdir;
		98	mkdir cf::localdir . "/" . cf::uniquedir;
		99	mkdir $RANDOM_MAPS;
		100	mkdir $BDB_ENV_DIR;
		101
		102	our $EMERGENCY_POSITION;
		103
		104	sub cf::map::normalise;
39		105
40	#############################################################################	106	#############################################################################
41		107
42	=head2 GLOBAL VARIABLES	108	=head2 GLOBAL VARIABLES
43		109
44	=over 4	110	=over 4
45		111
46	=item $cf::UPTIME	112	=item $cf::UPTIME
47		113
48	The timestamp of the server start (so not actually an uptime).	114	The timestamp of the server start (so not actually an uptime).
		115
		116	=item $cf::RUNTIME
		117
		118	The time this server has run, starts at 0 and is increased by $cf::TICK on
		119	every server tick.
49		120
50	=item $cf::LIBDIR	121	=item $cf::LIBDIR
51		122
52	The perl library directory, where extensions and cf-specific modules can	123	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	124	be found. It will be added to C<@INC> automatically.
54		125
		126	=item $cf::NOW
		127
		128	The time of the last (current) server tick.
		129
55	=item $cf::TICK	130	=item $cf::TICK
56		131
57	The interval between server ticks, in seconds.	132	The interval between server ticks, in seconds.
58		133
59	=item %cf::CFG	134	=item %cf::CFG
60		135
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	136	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	137	from wherever your confdir points to.
		138
		139	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		140
		141	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		142	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		143	processing has been done. Call C<< ->wait >> on them to maximise the
		144	window of cpu time available, or simply to synchronise to the server tick.
63		145
64	=back	146	=back
65		147
66	=cut	148	=cut
67		149
68	BEGIN {	150	BEGIN {
69	*CORE::GLOBAL::warn = sub {	151	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	152	my $msg = join "", @_;
		153	utf8::encode $msg;
		154
71	$msg .= "\n"	155	$msg .= "\n"
72	unless $msg =~ /\n$/;	156	unless $msg =~ /\n$/;
73		157
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	158	LOG llevError, $msg;
76	};	159	};
77	}	160	}
78		161
		162	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		163	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		164	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		165	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		166	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	167	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
80		168
81	# we bless all objects into (empty) derived classes to force a method lookup	169	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	170	# within the Safe compartment.
83	for my $pkg (qw(	171	for my $pkg (qw(
		172	cf::global cf::attachable
84	cf::object cf::object::player	173	cf::object cf::object::player
85	cf::client cf::player	174	cf::client cf::player
86	cf::arch cf::living	175	cf::arch cf::living
87	cf::map cf::party cf::region	176	cf::map cf::party cf::region
88	)) {	177	)) {
…		…
92		181
93	$Event::DIED = sub {	182	$Event::DIED = sub {
94	warn "error in event callback: @_";	183	warn "error in event callback: @_";
95	};	184	};
96		185
97	my %ext_pkg;
98	my @exts;
99	my @hook;
100
101	=head2 UTILITY FUNCTIONS	186	=head2 UTILITY FUNCTIONS
102		187
103	=over 4	188	=over 4
104		189
105	=cut	190	=item dumpval $ref
106		191
		192	=cut
		193
		194	sub dumpval {
		195	eval {
		196	local $SIG{__DIE__};
		197	my $d;
		198	if (1) {
		199	$d = new Data::Dumper([$_[0]], ["*var"]);
		200	$d->Terse(1);
		201	$d->Indent(2);
		202	$d->Quotekeys(0);
		203	$d->Useqq(1);
		204	#$d->Bless(...);
		205	$d->Seen($_[1]) if @_ > 1;
		206	$d = $d->Dump();
		207	}
		208	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		209	$d
		210	} || "[unable to dump $_[0]: '$@']";
		211	}
		212
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	213	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
108		214
109	=item $ref = cf::from_json $json	215	=item $ref = cf::from_json $json
110		216
111	Converts a JSON string into the corresponding perl data structure.	217	Converts a JSON string into the corresponding perl data structure.
112		218
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	219	=item $json = cf::to_json $ref
121		220
122	Converts a perl data structure into its JSON representation.	221	Converts a perl data structure into its JSON representation.
123		222
124	=cut	223	=item cf::lock_wait $string
125		224
126	sub to_json($) {	225	Wait until the given lock is available. See cf::lock_acquire.
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	226
128	JSON::Syck::Dump $_[0]	227	=item my $lock = cf::lock_acquire $string
		228
		229	Wait until the given lock is available and then acquires it and returns
		230	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		231	for example when the coroutine gets canceled), the lock is automatically
		232	returned.
		233
		234	Lock names should begin with a unique identifier (for example, cf::map::find
		235	uses map_find and cf::map::load uses map_load).
		236
		237	=cut
		238
		239	our %LOCK;
		240
		241	sub lock_wait($) {
		242	my ($key) = @_;
		243
		244	# wait for lock, if any
		245	while ($LOCK{$key}) {
		246	push @{ $LOCK{$key} }, $Coro::current;
		247	Coro::schedule;
		248	}
		249	}
		250
		251	sub lock_acquire($) {
		252	my ($key) = @_;
		253
		254	# wait, to be sure we are not locked
		255	lock_wait $key;
		256
		257	$LOCK{$key} = [];
		258
		259	Coro::guard {
		260	# wake up all waiters, to be on the safe side
		261	$_->ready for @{ delete $LOCK{$key} };
		262	}
		263	}
		264
		265	sub freeze_mainloop {
		266	return unless $TICK_WATCHER->is_active;
		267
		268	my $guard = Coro::guard {
		269	$TICK_WATCHER->start;
		270	};
		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 $guard = cf::lock_acquire "write_runtime";
		352
		353	my $runtime = cf::localdir . "/runtime";
		354
		355	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		356	or return;
		357
		358	my $value = $cf::RUNTIME + 90 + 10;
		359	# 10 is the runtime save interval, for a monotonic clock
		360	# 60 allows for the watchdog to kill the server.
		361
		362	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		363	and return;
		364
		365	# always fsync - this file is important
		366	aio_fsync $fh
		367	and return;
		368
		369	close $fh
		370	or return;
		371
		372	aio_rename "$runtime~", $runtime
		373	and return;
		374
		375	1
		376	}
		377
		378	=item cf::datalog type => key => value, ...
		379
		380	Log a datalog packet of the given type with the given key-value pairs.
		381
		382	=cut
		383
		384	sub datalog($@) {
		385	my ($type, %kv) = @_;
		386	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	387	}
130		388
131	=back	389	=back
132		390
133	=cut	391	=cut
134		392
135	#############################################################################	393	#############################################################################
136		394
137	=head2 EVENTS AND OBJECT ATTACHMENTS	395	=head2 ATTACHABLE OBJECTS
		396
		397	Many objects in crossfire are so-called attachable objects. That means you can
		398	attach callbacks/event handlers (a collection of which is called an "attachment")
		399	to it. All such attachable objects support the following methods.
		400
		401	In the following description, CLASS can be any of C<global>, C<object>
		402	C<player>, C<client> or C<map> (i.e. the attachable objects in
		403	crossfire+).
138		404
139	=over 4	405	=over 4
140		406
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)
154
155	=item $map->detach ($attachment)
156
157	Attach/detach a pre-registered attachment to a client.
158
159	=item $client->attach ($attachment, key => $value...)	407	=item $attachable->attach ($attachment, key => $value...)
160		408
161	=item $client->detach ($attachment)	409	=item $attachable->detach ($attachment)
162		410
163	Attach/detach a pre-registered attachment to a map.	411	Attach/detach a pre-registered attachment to a specific object and give it
		412	the specified key/value pairs as arguments.
164		413
165	=item $bool = $object->attached ($name)	414	Example, attach a minesweeper attachment to the given object, making it a
		415	10x10 minesweeper game:
166		416
167	=item $bool = $player->attached ($name)	417	$obj->attach (minesweeper => width => 10, height => 10);
168		418
169	=item $bool = $client->attached ($name)	419	=item $bool = $attachable->attached ($name)
170
171	=item $bool = $map->attached ($name)
172		420
173	Checks wether the named attachment is currently attached to the object.	421	Checks wether the named attachment is currently attached to the object.
174		422
175	=item cf::attach_global ...	423	=item cf::CLASS->attach ...
176		424
177	Attach handlers for global events.	425	=item cf::CLASS->detach ...
178		426
179	This and all following C<attach_*>-functions expect any number of the	427	Define an anonymous attachment and attach it to all objects of the given
180	following handler/hook descriptions:	428	CLASS. See the next function for an explanation of its arguments.
		429
		430	You can attach to global events by using the C<cf::global> class.
		431
		432	Example, log all player logins:
		433
		434	cf::player->attach (
		435	on_login => sub {
		436	my ($pl) = @_;
		437	...
		438	},
		439	);
		440
		441	Example, attach to the jeweler skill:
		442
		443	cf::object->attach (
		444	type => cf::SKILL,
		445	subtype => cf::SK_JEWELER,
		446	on_use_skill => sub {
		447	my ($sk, $ob, $part, $dir, $msg) = @_;
		448	...
		449	},
		450	);
		451
		452	=item cf::CLASS::attachment $name, ...
		453
		454	Register an attachment by C<$name> through which attachable objects of the
		455	given CLASS can refer to this attachment.
		456
		457	Some classes such as crossfire maps and objects can specify attachments
		458	that are attached at load/instantiate time, thus the need for a name.
		459
		460	These calls expect any number of the following handler/hook descriptions:
181		461
182	=over 4	462	=over 4
183		463
184	=item prio => $number	464	=item prio => $number
185		465
…		…
187	by another C<prio> setting). Lower priority handlers get executed	467	by another C<prio> setting). Lower priority handlers get executed
188	earlier. The default priority is C<0>, and many built-in handlers are	468	earlier. The default priority is C<0>, and many built-in handlers are
189	registered at priority C<-1000>, so lower priorities should not be used	469	registered at priority C<-1000>, so lower priorities should not be used
190	unless you know what you are doing.	470	unless you know what you are doing.
191		471
		472	=item type => $type
		473
		474	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		475	given type of objects only (the additional parameter C<subtype> can be
		476	used to further limit to the given subtype).
		477
192	=item on_I<event> => \&cb	478	=item on_I<event> => \&cb
193		479
194	Call the given code reference whenever the named event happens (event is	480	Call the given code reference whenever the named event happens (event is
195	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	481	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
196	handlers are recognised generally depends on the type of object these	482	handlers are recognised generally depends on the type of object these
…		…
205	package and register them. Only handlers for eevents supported by the	491	package and register them. Only handlers for eevents supported by the
206	object/class are recognised.	492	object/class are recognised.
207		493
208	=back	494	=back
209		495
210	=item cf::attach_to_type $object_type, $subtype, ...	496	Example, define an attachment called "sockpuppet" that calls the given
		497	event handler when a monster attacks:
211		498
212	Attach handlers for a specific object type (e.g. TRANSPORT) and	499	cf::object::attachment sockpuppet =>
213	subtype. If C<$subtype> is zero or undef, matches all objects of the given	500	on_skill_attack => sub {
214	type.	501	my ($self, $victim) = @_;
215		502	...
216	=item cf::attach_to_objects ...
217
218	Attach handlers to all objects. Do not use this except for debugging or
219	very rare events, as handlers are (obviously) called for I<all> objects in
220	the game.
221
222	=item cf::attach_to_players ...
223
224	Attach handlers to all players.
225
226	=item cf::attach_to_clients ...
227
228	Attach handlers to all players.
229
230	=item cf::attach_to_maps ...
231
232	Attach handlers to all maps.
233
234	=item cf:register_attachment $name, ...
235
236	Register an attachment by name through which objects can refer to this
237	attachment.
238
239	=item cf:register_player_attachment $name, ...
240
241	Register an attachment by name through which players can refer to this
242	attachment.
243
244	=item cf:register_map_attachment $name, ...
245
246	Register an attachment by name through which maps can refer to this
247	attachment.
248
249	=cut
250
251	# the following variables are defined in .xs and must not be re-created
252	our @CB_GLOBAL = (); # registry for all global events
253	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
254	our @CB_PLAYER = ();
255	our @CB_CLIENT = ();
256	our @CB_TYPE = (); # registry for type (cf-object class) based events
257	our @CB_MAP = ();
258
259	my %attachment;
260
261	sub _attach_cb($\%$$$) {
262	my ($registry, $undo, $event, $prio, $cb) = @_;
263
264	use sort 'stable';
265
266	$cb = [$prio, $cb];
267
268	@{$registry->[$event]} = sort
269	{ $a->[0] cmp $b->[0] }
270	@{$registry->[$event] || []}, $cb;
271
272	push @{$undo->{cb}}, [$event, $cb];
273	}
274
275	# attach handles attaching event callbacks
276	# the only thing the caller has to do is pass the correct
277	# registry (== where the callback attaches to).
278	sub _attach(\@$@) {
279	my ($registry, $klass, @arg) = @_;
280
281	my $prio = 0;
282
283	my %undo = (
284	registry => $registry,
285	cb => [],
286	);
287
288	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
289
290	while (@arg) {
291	my $type = shift @arg;
292
293	if ($type eq "prio") {
294	$prio = shift @arg;
295
296	} elsif ($type eq "package") {
297	my $pkg = shift @arg;
298
299	while (my ($name, $id) = each %cb_id) {
300	if (my $cb = $pkg->can ($name)) {
301	_attach_cb $registry, %undo, $id, $prio, $cb;
302	}
303	}	503	}
304
305	} elsif (exists $cb_id{$type}) {
306	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
307
308	} elsif (ref $type) {
309	warn "attaching objects not supported, ignoring.\n";
310
311	} else {
312	shift @arg;
313	warn "attach argument '$type' not supported, ignoring.\n";
314	}
315	}
316
317	\%undo
318	}
319
320	sub _attach_attachment {
321	my ($obj, $name, %arg) = @_;
322
323	return if exists $obj->{_attachment}{$name};
324
325	my $res;
326
327	if (my $attach = $attachment{$name}) {
328	my $registry = $obj->registry;
329
330	for (@$attach) {
331	my ($klass, @attach) = @$_;
332	$res = _attach @$registry, $klass, @attach;
333	}
334
335	$obj->{$name} = \%arg;
336	} else {
337	warn "object uses attachment '$name' that is not available, postponing.\n";
338	}
339
340	$obj->{_attachment}{$name} = undef;
341
342	$res->{attachment} = $name;
343	$res
344	}
345
346	*cf::object::attach =
347	*cf::player::attach =
348	*cf::client::attach =
349	*cf::map::attach = sub {
350	my ($obj, $name, %arg) = @_;
351
352	_attach_attachment $obj, $name, %arg;
353	};
354
355	# all those should be optimised
356	*cf::object::detach =
357	*cf::player::detach =
358	*cf::client::detach =
359	*cf::map::detach = sub {
360	my ($obj, $name) = @_;
361
362	delete $obj->{_attachment}{$name};
363	reattach ($obj);
364	};
365
366	*cf::object::attached =
367	*cf::player::attached =
368	*cf::client::attached =
369	*cf::map::attached = sub {
370	my ($obj, $name) = @_;
371
372	exists $obj->{_attachment}{$name}
373	};
374
375	sub attach_global {
376	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
377	}
378
379	sub attach_to_type {
380	my $type = shift;
381	my $subtype = shift;
382
383	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
384	}
385
386	sub attach_to_objects {
387	_attach @CB_OBJECT, KLASS_OBJECT, @_
388	}
389
390	sub attach_to_players {
391	_attach @CB_PLAYER, KLASS_PLAYER, @_
392	}
393
394	sub attach_to_clients {
395	_attach @CB_CLIENT, KLASS_CLIENT, @_
396	}
397
398	sub attach_to_maps {
399	_attach @CB_MAP, KLASS_MAP, @_
400	}
401
402	sub register_attachment {
403	my $name = shift;
404
405	$attachment{$name} = [[KLASS_OBJECT, @_]];
406	}
407
408	sub register_player_attachment {
409	my $name = shift;
410
411	$attachment{$name} = [[KLASS_PLAYER, @_]];
412	}
413
414	sub register_client_attachment {
415	my $name = shift;
416
417	$attachment{$name} = [[KLASS_CLIENT, @_]];
418	}
419
420	sub register_map_attachment {
421	my $name = shift;
422
423	$attachment{$name} = [[KLASS_MAP, @_]];
424	}
425
426	our $override;
427	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
428
429	sub override {
430	$override = 1;
431	@invoke_results = ();
432	}
433
434	sub do_invoke {
435	my $event = shift;
436	my $callbacks = shift;
437
438	@invoke_results = ();
439
440	local $override;
441
442	for (@$callbacks) {
443	eval { &{$_->[1]} };
444
445	if ($@) {
446	warn "$@";
447	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
448	override;
449	}
450
451	return 1 if $override;
452	}
453
454	0	504	}
455	}
456		505
457	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	506	=item $attachable->valid
458
459	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
460
461	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
462
463	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
464
465	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
466
467	Generate a global/object/player/map-specific event with the given arguments.
468
469	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
470	removed in future versions), and there is no public API to access override
471	results (if you must, access C<@cf::invoke_results> directly).
472
473	=back
474
475	=cut
476
477	#############################################################################
478
479	=head2 METHODS VALID FOR ALL CORE OBJECTS
480
481	=over 4
482
483	=item $object->valid, $player->valid, $client->valid, $map->valid
484		507
485	Just because you have a perl object does not mean that the corresponding	508	Just because you have a perl object does not mean that the corresponding
486	C-level object still exists. If you try to access an object that has no	509	C-level object still exists. If you try to access an object that has no
487	valid C counterpart anymore you get an exception at runtime. This method	510	valid C counterpart anymore you get an exception at runtime. This method
488	can be used to test for existence of the C object part without causing an	511	can be used to test for existence of the C object part without causing an
489	exception.	512	exception.
490		513
		514	=cut
		515
		516	# the following variables are defined in .xs and must not be re-created
		517	our @CB_GLOBAL = (); # registry for all global events
		518	our @CB_ATTACHABLE = (); # registry for all attachables
		519	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		520	our @CB_PLAYER = ();
		521	our @CB_CLIENT = ();
		522	our @CB_TYPE = (); # registry for type (cf-object class) based events
		523	our @CB_MAP = ();
		524
		525	my %attachment;
		526
		527	sub cf::attachable::thawer_merge {
		528	# simply override everything except _meta
		529	local $_[0]{_meta};
		530	%{$_[0]} = %{$_[1]};
		531	}
		532
		533	sub _attach_cb($$$$) {
		534	my ($registry, $event, $prio, $cb) = @_;
		535
		536	use sort 'stable';
		537
		538	$cb = [$prio, $cb];
		539
		540	@{$registry->[$event]} = sort
		541	{ $a->[0] cmp $b->[0] }
		542	@{$registry->[$event] || []}, $cb;
		543	}
		544
		545	# hack
		546	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		547
		548	# attach handles attaching event callbacks
		549	# the only thing the caller has to do is pass the correct
		550	# registry (== where the callback attaches to).
		551	sub _attach {
		552	my ($registry, $klass, @arg) = @_;
		553
		554	my $object_type;
		555	my $prio = 0;
		556	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		557
		558	#TODO: get rid of this hack
		559	if ($attachable_klass{$klass}) {
		560	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		561	}
		562
		563	while (@arg) {
		564	my $type = shift @arg;
		565
		566	if ($type eq "prio") {
		567	$prio = shift @arg;
		568
		569	} elsif ($type eq "type") {
		570	$object_type = shift @arg;
		571	$registry = $CB_TYPE[$object_type] ||= [];
		572
		573	} elsif ($type eq "subtype") {
		574	defined $object_type or Carp::croak "subtype specified without type";
		575	my $object_subtype = shift @arg;
		576	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		577
		578	} elsif ($type eq "package") {
		579	my $pkg = shift @arg;
		580
		581	while (my ($name, $id) = each %cb_id) {
		582	if (my $cb = $pkg->can ($name)) {
		583	_attach_cb $registry, $id, $prio, $cb;
		584	}
		585	}
		586
		587	} elsif (exists $cb_id{$type}) {
		588	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		589
		590	} elsif (ref $type) {
		591	warn "attaching objects not supported, ignoring.\n";
		592
		593	} else {
		594	shift @arg;
		595	warn "attach argument '$type' not supported, ignoring.\n";
		596	}
		597	}
		598	}
		599
		600	sub _object_attach {
		601	my ($obj, $name, %arg) = @_;
		602
		603	return if exists $obj->{_attachment}{$name};
		604
		605	if (my $attach = $attachment{$name}) {
		606	my $registry = $obj->registry;
		607
		608	for (@$attach) {
		609	my ($klass, @attach) = @$_;
		610	_attach $registry, $klass, @attach;
		611	}
		612
		613	$obj->{$name} = \%arg;
		614	} else {
		615	warn "object uses attachment '$name' that is not available, postponing.\n";
		616	}
		617
		618	$obj->{_attachment}{$name} = undef;
		619	}
		620
		621	sub cf::attachable::attach {
		622	if (ref $_[0]) {
		623	_object_attach @_;
		624	} else {
		625	_attach shift->_attach_registry, @_;
		626	}
		627	};
		628
		629	# all those should be optimised
		630	sub cf::attachable::detach {
		631	my ($obj, $name) = @_;
		632
		633	if (ref $obj) {
		634	delete $obj->{_attachment}{$name};
		635	reattach ($obj);
		636	} else {
		637	Carp::croak "cannot, currently, detach class attachments";
		638	}
		639	};
		640
		641	sub cf::attachable::attached {
		642	my ($obj, $name) = @_;
		643
		644	exists $obj->{_attachment}{$name}
		645	}
		646
		647	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		648	eval "#line " . __LINE__ . " 'cf.pm'
		649	sub cf::\L$klass\E::_attach_registry {
		650	(\\\@CB_$klass, KLASS_$klass)
		651	}
		652
		653	sub cf::\L$klass\E::attachment {
		654	my \$name = shift;
		655
		656	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		657	}
		658	";
		659	die if $@;
		660	}
		661
		662	our $override;
		663	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		664
		665	sub override {
		666	$override = 1;
		667	@invoke_results = ();
		668	}
		669
		670	sub do_invoke {
		671	my $event = shift;
		672	my $callbacks = shift;
		673
		674	@invoke_results = ();
		675
		676	local $override;
		677
		678	for (@$callbacks) {
		679	eval { &{$_->[1]} };
		680
		681	if ($@) {
		682	warn "$@";
		683	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		684	override;
		685	}
		686
		687	return 1 if $override;
		688	}
		689
		690	0
		691	}
		692
		693	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		694
		695	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		696
		697	Generate an object-specific event with the given arguments.
		698
		699	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		700	removed in future versions), and there is no public API to access override
		701	results (if you must, access C<@cf::invoke_results> directly).
		702
491	=back	703	=back
492		704
493	=cut	705	=cut
494
495	*cf::object::valid =
496	*cf::player::valid =
497	*cf::client::valid =
498	*cf::map::valid = \&cf::_valid;
499		706
500	#############################################################################	707	#############################################################################
501	# object support	708	# object support
502		709
503	sub instantiate {
504	my ($obj, $data) = @_;
505
506	$data = from_json $data;
507
508	for (@$data) {
509	my ($name, $args) = @$_;
510
511	$obj->attach ($name, %{$args || {} });
512	}
513	}
514
515	# basically do the same as instantiate, without calling instantiate
516	sub reattach {	710	sub reattach {
		711	# basically do the same as instantiate, without calling instantiate
517	my ($obj) = @_;	712	my ($obj) = @_;
		713
		714	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		715
518	my $registry = $obj->registry;	716	my $registry = $obj->registry;
519		717
520	@$registry = ();	718	@$registry = ();
521		719
522	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	720	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
523		721
524	for my $name (keys %{ $obj->{_attachment} || {} }) {	722	for my $name (keys %{ $obj->{_attachment} || {} }) {
525	if (my $attach = $attachment{$name}) {	723	if (my $attach = $attachment{$name}) {
526	for (@$attach) {	724	for (@$attach) {
527	my ($klass, @attach) = @$_;	725	my ($klass, @attach) = @$_;
528	_attach @$registry, $klass, @attach;	726	_attach $registry, $klass, @attach;
529	}	727	}
530	} else {	728	} else {
531	warn "object uses attachment '$name' that is not available, postponing.\n";	729	warn "object uses attachment '$name' that is not available, postponing.\n";
532	}	730	}
533	}	731	}
534	}	732	}
535		733
536	sub object_freezer_save {	734	cf::attachable->attach (
537	my ($filename, $rdata, $objs) = @_;
538
539	if (length $$rdata) {
540	warn sprintf "saving %s (%d,%d)\n",
541	$filename, length $$rdata, scalar @$objs;
542
543	if (open my $fh, ">:raw", "$filename~") {
544	chmod SAVE_MODE, $fh;
545	syswrite $fh, $$rdata;
546	close $fh;
547
548	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
549	chmod SAVE_MODE, $fh;
550	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
551	close $fh;
552	rename "$filename.pst~", "$filename.pst";
553	} else {
554	unlink "$filename.pst";
555	}
556
557	rename "$filename~", $filename;
558	} else {
559	warn "FATAL: $filename~: $!\n";
560	}
561	} else {
562	unlink $filename;
563	unlink "$filename.pst";
564	}
565	}
566
567	sub object_freezer_as_string {
568	my ($rdata, $objs) = @_;
569
570	use Data::Dumper;
571
572	$$rdata . Dumper $objs
573	}
574
575	sub object_thawer_load {
576	my ($filename) = @_;
577
578	local $/;
579
580	my $av;
581
582	#TODO: use sysread etc.
583	if (open my $data, "<:raw:perlio", $filename) {
584	$data = <$data>;
585	if (open my $pst, "<:raw:perlio", "$filename.pst") {
586	$av = eval { (Storable::thaw <$pst>)->{objs} };
587	}
588	return ($data, $av);
589	}
590
591	()
592	}
593
594	attach_to_objects
595	prio => -1000000,	735	prio => -1000000,
		736	on_instantiate => sub {
		737	my ($obj, $data) = @_;
		738
		739	$data = from_json $data;
		740
		741	for (@$data) {
		742	my ($name, $args) = @$_;
		743
		744	$obj->attach ($name, %{$args || {} });
		745	}
		746	},
		747	on_reattach => \&reattach,
596	on_clone => sub {	748	on_clone => sub {
597	my ($src, $dst) = @_;	749	my ($src, $dst) = @_;
598		750
599	@{$dst->registry} = @{$src->registry};	751	@{$dst->registry} = @{$src->registry};
600		752
601	%$dst = %$src;	753	%$dst = %$src;
602		754
603	%{$dst->{_attachment}} = %{$src->{_attachment}}	755	%{$dst->{_attachment}} = %{$src->{_attachment}}
604	if exists $src->{_attachment};	756	if exists $src->{_attachment};
605	},	757	},
606	;	758	);
		759
		760	sub object_freezer_save {
		761	my ($filename, $rdata, $objs) = @_;
		762
		763	sync_job {
		764	if (length $$rdata) {
		765	warn sprintf "saving %s (%d,%d)\n",
		766	$filename, length $$rdata, scalar @$objs;
		767
		768	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		769	chmod SAVE_MODE, $fh;
		770	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		771	aio_fsync $fh if $cf::USE_FSYNC;
		772	close $fh;
		773
		774	if (@$objs) {
		775	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		776	chmod SAVE_MODE, $fh;
		777	my $data = Storable::nfreeze { version => 1, objs => $objs };
		778	aio_write $fh, 0, (length $data), $data, 0;
		779	aio_fsync $fh if $cf::USE_FSYNC;
		780	close $fh;
		781	aio_rename "$filename.pst~", "$filename.pst";
		782	}
		783	} else {
		784	aio_unlink "$filename.pst";
		785	}
		786
		787	aio_rename "$filename~", $filename;
		788	} else {
		789	warn "FATAL: $filename~: $!\n";
		790	}
		791	} else {
		792	aio_unlink $filename;
		793	aio_unlink "$filename.pst";
		794	}
		795	}
		796	}
		797
		798	sub object_freezer_as_string {
		799	my ($rdata, $objs) = @_;
		800
		801	use Data::Dumper;
		802
		803	$$rdata . Dumper $objs
		804	}
		805
		806	sub object_thawer_load {
		807	my ($filename) = @_;
		808
		809	my ($data, $av);
		810
		811	(aio_load $filename, $data) >= 0
		812	or return;
		813
		814	unless (aio_stat "$filename.pst") {
		815	(aio_load "$filename.pst", $av) >= 0
		816	or return;
		817	$av = eval { (Storable::thaw $av)->{objs} };
		818	}
		819
		820	warn sprintf "loading %s (%d)\n",
		821	$filename, length $data, scalar @{$av || []};#d#
		822	return ($data, $av);
		823	}
607		824
608	#############################################################################	825	#############################################################################
609	# command handling &c	826	# command handling &c
610		827
611	=item cf::register_command $name => \&callback($ob,$args);	828	=item cf::register_command $name => \&callback($ob,$args);
…		…
634	=cut	851	=cut
635		852
636	sub register_extcmd {	853	sub register_extcmd {
637	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
638		855
639	my $caller = caller;
640	#warn "registering extcmd '$name' to '$caller'";
641
642	$EXTCMD{$name} = [$cb, $caller];	856	$EXTCMD{$name} = $cb;
643	}	857	}
644		858
645	attach_to_players	859	cf::player->attach (
646	on_command => sub {	860	on_command => sub {
647	my ($pl, $name, $params) = @_;	861	my ($pl, $name, $params) = @_;
648		862
649	my $cb = $COMMAND{$name}	863	my $cb = $COMMAND{$name}
650	or return;	864	or return;
…		…
660		874
661	my $msg = eval { from_json $buf };	875	my $msg = eval { from_json $buf };
662		876
663	if (ref $msg) {	877	if (ref $msg) {
664	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	878	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
665	if (my %reply = $cb->[0]->($pl, $msg)) {	879	if (my %reply = $cb->($pl, $msg)) {
666	$pl->ext_reply ($msg->{msgid}, %reply);	880	$pl->ext_reply ($msg->{msgid}, %reply);
667	}	881	}
668	}	882	}
669	} else {	883	} else {
670	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	884	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
671	}	885	}
672		886
673	cf::override;	887	cf::override;
674	},	888	},
675	;	889	);
676
677	sub register {
678	my ($base, $pkg) = @_;
679
680	#TODO
681	}
682		890
683	sub load_extension {	891	sub load_extension {
684	my ($path) = @_;	892	my ($path) = @_;
685		893
686	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	894	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
687	my $base = $1;	895	my $base = $1;
688	my $pkg = $1;	896	my $pkg = $1;
689	$pkg =~ s/[^[:word:]]/_/g;	897	$pkg =~ s/[^[:word:]]/_/g;
690	$pkg = "ext::$pkg";	898	$pkg = "ext::$pkg";
691		899
692	warn "loading '$path' into '$pkg'\n";	900	warn "... loading '$path' into '$pkg'\n";
693		901
694	open my $fh, "<:utf8", $path	902	open my $fh, "<:utf8", $path
695	or die "$path: $!";	903	or die "$path: $!";
696		904
697	my $source =	905	my $source =
698	"package $pkg; use strict; use utf8;\n"	906	"package $pkg; use strict; use utf8;\n"
699	. "#line 1 \"$path\"\n{\n"	907	. "#line 1 \"$path\"\n{\n"
700	. (do { local $/; <$fh> })	908	. (do { local $/; <$fh> })
701	. "\n};\n1";	909	. "\n};\n1";
702		910
703	eval $source	911	unless (eval $source) {
704	or die $@ ? "$path: $@\n"	912	my $msg = $@ ? "$path: $@\n"
705	: "extension disabled.\n";	913	: "extension disabled.\n";
706		914	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
707	push @exts, $pkg;	915	warn $@;
708	$ext_pkg{$base} = $pkg;	916	warn "mandatory extension failed to load, exiting.\n";
709		917	exit 1;
710	# no strict 'refs';	918	}
711	# @{"$pkg\::ISA"} = ext::;	919	die $@;
712
713	register $base, $pkg;
714	}
715
716	sub unload_extension {
717	my ($pkg) = @_;
718
719	warn "removing extension $pkg\n";
720
721	# remove hooks
722	#TODO
723	# for my $idx (0 .. $#PLUGIN_EVENT) {
724	# delete $hook[$idx]{$pkg};
725	# }	920	}
726		921
727	# remove commands	922	push @EXTS, $pkg;
728	for my $name (keys %COMMAND) {
729	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
730
731	if (@cb) {
732	$COMMAND{$name} = \@cb;
733	} else {
734	delete $COMMAND{$name};
735	}
736	}
737
738	# remove extcmds
739	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
740	delete $EXTCMD{$name};
741	}
742
743	if (my $cb = $pkg->can ("unload")) {
744	eval {
745	$cb->($pkg);
746	1
747	} or warn "$pkg unloaded, but with errors: $@";
748	}
749
750	Symbol::delete_package $pkg;
751	}	923	}
752		924
753	sub load_extensions {	925	sub load_extensions {
754	for my $ext (<$LIBDIR/*.ext>) {	926	for my $ext (<$LIBDIR/*.ext>) {
755	next unless -r $ext;	927	next unless -r $ext;
…		…
759	} or warn "$ext not loaded: $@";	931	} or warn "$ext not loaded: $@";
760	}	932	}
761	}	933	}
762		934
763	#############################################################################	935	#############################################################################
764	# load/save/clean perl data associated with a map
765		936
766	*cf::mapsupport::on_clean = sub {	937	=head2 CORE EXTENSIONS
		938
		939	Functions and methods that extend core crossfire objects.
		940
		941	=cut
		942
		943	package cf::player;
		944
		945	use Coro::AIO;
		946
		947	=head3 cf::player
		948
		949	=over 4
		950
		951	=item cf::player::find $login
		952
		953	Returns the given player object, loading it if necessary (might block).
		954
		955	=cut
		956
		957	sub playerdir($) {
		958	cf::localdir
		959	. "/"
		960	. cf::playerdir
		961	. "/"
		962	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		963	}
		964
		965	sub path($) {
		966	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		967
		968	(playerdir $login) . "/$login.pl"
		969	}
		970
		971	sub find_active($) {
		972	$cf::PLAYER{$_[0]}
		973	and $cf::PLAYER{$_[0]}->active
		974	and $cf::PLAYER{$_[0]}
		975	}
		976
		977	sub exists($) {
		978	my ($login) = @_;
		979
		980	$cf::PLAYER{$login}
		981	or cf::sync_job { !aio_stat path $login }
		982	}
		983
		984	sub find($) {
		985	return $cf::PLAYER{$_[0]} || do {
		986	my $login = $_[0];
		987
		988	my $guard = cf::lock_acquire "user_find:$login";
		989
		990	$cf::PLAYER{$_[0]} || do {
		991	my $pl = load_pl path $login
		992	or return;
		993	$cf::PLAYER{$login} = $pl
		994	}
		995	}
		996	}
		997
		998	sub save($) {
		999	my ($pl) = @_;
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	my $path = path $pl;
		1004	my $guard = cf::lock_acquire "user_save:$path";
		1005
		1006	return if $pl->{deny_save};
		1007
		1008	aio_mkdir playerdir $pl, 0770;
		1009	$pl->{last_save} = $cf::RUNTIME;
		1010
		1011	$pl->save_pl ($path);
		1012	Coro::cede;
		1013	}
		1014
		1015	sub new($) {
		1016	my ($login) = @_;
		1017
		1018	my $self = create;
		1019
		1020	$self->ob->name ($login);
		1021	$self->{deny_save} = 1;
		1022
		1023	$cf::PLAYER{$login} = $self;
		1024
		1025	$self
		1026	}
		1027
		1028	=item $pl->quit_character
		1029
		1030	Nukes the player without looking back. If logged in, the connection will
		1031	be destroyed. May block for a long time.
		1032
		1033	=cut
		1034
		1035	sub quit_character {
		1036	my ($pl) = @_;
		1037
		1038	my $name = $pl->ob->name;
		1039
		1040	$pl->{deny_save} = 1;
		1041	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1042
		1043	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1044	$pl->deactivate;
		1045	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1046	$pl->ns->destroy if $pl->ns;
		1047
		1048	my $path = playerdir $pl;
		1049	my $temp = "$path~$cf::RUNTIME~deleting~";
		1050	aio_rename $path, $temp;
		1051	delete $cf::PLAYER{$pl->ob->name};
		1052	$pl->destroy;
		1053
		1054	my $prefix = qr<^~\Q$name\E/>;
		1055
		1056	# nuke player maps
		1057	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1058
		1059	IO::AIO::aio_rmtree $temp;
		1060	}
		1061
		1062	=item $pl->kick
		1063
		1064	Kicks a player out of the game. This destroys the connection.
		1065
		1066	=cut
		1067
		1068	sub kick {
		1069	my ($pl, $kicker) = @_;
		1070
		1071	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1072	$pl->killer ("kicked");
		1073	$pl->ns->destroy;
		1074	}
		1075
		1076	=item cf::player::list_logins
		1077
		1078	Returns am arrayref of all valid playernames in the system, can take a
		1079	while and may block, so not sync_job-capable, ever.
		1080
		1081	=cut
		1082
		1083	sub list_logins {
		1084	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1085	or return [];
		1086
		1087	my @logins;
		1088
		1089	for my $login (@$dirs) {
		1090	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1091	aio_read $fh, 0, 512, my $buf, 0 or next;
		1092	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1093
		1094	utf8::decode $login;
		1095	push @logins, $login;
		1096	}
		1097
		1098	\@logins
		1099	}
		1100
		1101	=item $player->maps
		1102
		1103	Returns an arrayref of map paths that are private for this
		1104	player. May block.
		1105
		1106	=cut
		1107
		1108	sub maps($) {
		1109	my ($pl) = @_;
		1110
		1111	$pl = ref $pl ? $pl->ob->name : $pl;
		1112
		1113	my $files = aio_readdir playerdir $pl
		1114	or return;
		1115
		1116	my @paths;
		1117
		1118	for (@$files) {
		1119	utf8::decode $_;
		1120	next if /\.(?:pl|pst)$/;
		1121	next unless /^$PATH_SEP/o;
		1122
		1123	push @paths, cf::map::normalise "~$pl/$_";
		1124	}
		1125
		1126	\@paths
		1127	}
		1128
		1129	=item $player->ext_reply ($msgid, %msg)
		1130
		1131	Sends an ext reply to the player.
		1132
		1133	=cut
		1134
		1135	sub ext_reply($$%) {
		1136	my ($self, $id, %msg) = @_;
		1137
		1138	$msg{msgid} = $id;
		1139
		1140	$self->send ("ext " . cf::to_json \%msg);
		1141	}
		1142
		1143	=item $player->ext_event ($type, %msg)
		1144
		1145	Sends an ext event to the client.
		1146
		1147	=cut
		1148
		1149	sub ext_event($$%) {
		1150	my ($self, $type, %msg) = @_;
		1151
		1152	delete $msg{msgid};
		1153	$msg{msgtype} = "event";
		1154	$msg{eventtype} = $type;
		1155
		1156	$self->send ("ext " . cf::to_json \%msg);
		1157	}
		1158
		1159	package cf;
		1160
		1161	=back
		1162
		1163
		1164	=head3 cf::map
		1165
		1166	=over 4
		1167
		1168	=cut
		1169
		1170	package cf::map;
		1171
		1172	use Fcntl;
		1173	use Coro::AIO;
		1174
		1175	use overload
		1176	'""' => \&as_string,
		1177	fallback => 1;
		1178
		1179	our $MAX_RESET = 3600;
		1180	our $DEFAULT_RESET = 3000;
		1181
		1182	sub generate_random_map {
		1183	my ($self, $rmp) = @_;
		1184	# mit "rum" bekleckern, nicht
		1185	$self->_create_random_map (
		1186	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1187	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1188	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1189	$rmp->{exit_on_final_map},
		1190	$rmp->{xsize}, $rmp->{ysize},
		1191	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1192	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1193	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1194	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1195	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1196	(cf::region::find $rmp->{region}), $rmp->{custom}
		1197	)
		1198	}
		1199
		1200	=item cf::map->register ($regex, $prio)
		1201
		1202	Register a handler for the map path matching the given regex at the
		1203	givne priority (higher is better, built-in handlers have priority 0, the
		1204	default).
		1205
		1206	=cut
		1207
		1208	sub register {
		1209	my (undef, $regex, $prio) = @_;
		1210	my $pkg = caller;
		1211
		1212	no strict;
		1213	push @{"$pkg\::ISA"}, __PACKAGE__;
		1214
		1215	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1216	}
		1217
		1218	# also paths starting with '/'
		1219	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1220
		1221	sub thawer_merge {
		1222	my ($self, $merge) = @_;
		1223
		1224	# we have to keep some variables in memory intact
		1225	local $self->{path};
		1226	local $self->{load_path};
		1227	local $self->{deny_save};
		1228	local $self->{deny_reset};
		1229
		1230	$self->SUPER::thawer_merge ($merge);
		1231	}
		1232
		1233	sub normalise {
		1234	my ($path, $base) = @_;
		1235
		1236	$path = "$path"; # make sure its a string
		1237
		1238	$path =~ s/\.map$//;
		1239
		1240	# map plan:
		1241	#
		1242	# /! non-realised random map exit (special hack!)
		1243	# {... are special paths that are not being touched
		1244	# ?xxx/... are special absolute paths
		1245	# ?random/... random maps
		1246	# /... normal maps
		1247	# ~user/... per-player map of a specific user
		1248
		1249	$path =~ s/$PATH_SEP/\//go;
		1250
		1251	# treat it as relative path if it starts with
		1252	# something that looks reasonable
		1253	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1254	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1255
		1256	$base =~ s{[^/]+/?$}{};
		1257	$path = "$base/$path";
		1258	}
		1259
		1260	for ($path) {
		1261	redo if s{//}{/};
		1262	redo if s{/\.?/}{/};
		1263	redo if s{/[^/]+/\.\./}{/};
		1264	}
		1265
		1266	$path
		1267	}
		1268
		1269	sub new_from_path {
		1270	my (undef, $path, $base) = @_;
		1271
		1272	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1273
		1274	$path = normalise $path, $base;
		1275
		1276	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1277	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1278	my $self = bless cf::map::new, $pkg;
		1279	$self->{path} = $path; $self->path ($path);
		1280	$self->init; # pass $1 etc.
		1281	return $self;
		1282	}
		1283	}
		1284
		1285	Carp::carp "unable to resolve path '$path' (base '$base').";
		1286	()
		1287	}
		1288
		1289	sub init {
		1290	my ($self) = @_;
		1291
		1292	$self
		1293	}
		1294
		1295	sub as_string {
		1296	my ($self) = @_;
		1297
		1298	"$self->{path}"
		1299	}
		1300
		1301	# the displayed name, this is a one way mapping
		1302	sub visible_name {
		1303	&as_string
		1304	}
		1305
		1306	# the original (read-only) location
		1307	sub load_path {
		1308	my ($self) = @_;
		1309
		1310	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1311	}
		1312
		1313	# the temporary/swap location
		1314	sub save_path {
		1315	my ($self) = @_;
		1316
		1317	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1318	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1319	}
		1320
		1321	# the unique path, undef == no special unique path
		1322	sub uniq_path {
		1323	my ($self) = @_;
		1324
		1325	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1326	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1327	}
		1328
		1329	# and all this just because we cannot iterate over
		1330	# all maps in C++...
		1331	sub change_all_map_light {
		1332	my ($change) = @_;
		1333
		1334	$_->change_map_light ($change)
		1335	for grep $_->outdoor, values %cf::MAP;
		1336	}
		1337
		1338	sub unlink_save {
		1339	my ($self) = @_;
		1340
		1341	utf8::encode (my $save = $self->save_path);
		1342	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1343	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1344	}
		1345
		1346	sub load_header_from($) {
		1347	my ($self, $path) = @_;
		1348
		1349	utf8::encode $path;
		1350	#aio_open $path, O_RDONLY, 0
		1351	# or return;
		1352
		1353	$self->_load_header ($path)
		1354	or return;
		1355
		1356	$self->{load_path} = $path;
		1357
		1358	1
		1359	}
		1360
		1361	sub load_header_orig {
		1362	my ($self) = @_;
		1363
		1364	$self->load_header_from ($self->load_path)
		1365	}
		1366
		1367	sub load_header_temp {
		1368	my ($self) = @_;
		1369
		1370	$self->load_header_from ($self->save_path)
		1371	}
		1372
		1373	sub prepare_temp {
		1374	my ($self) = @_;
		1375
		1376	$self->last_access ((delete $self->{last_access})
		1377	|| $cf::RUNTIME); #d#
		1378	# safety
		1379	$self->{instantiate_time} = $cf::RUNTIME
		1380	if $self->{instantiate_time} > $cf::RUNTIME;
		1381	}
		1382
		1383	sub prepare_orig {
		1384	my ($self) = @_;
		1385
		1386	$self->{load_original} = 1;
		1387	$self->{instantiate_time} = $cf::RUNTIME;
		1388	$self->last_access ($cf::RUNTIME);
		1389	$self->instantiate;
		1390	}
		1391
		1392	sub load_header {
		1393	my ($self) = @_;
		1394
		1395	if ($self->load_header_temp) {
		1396	$self->prepare_temp;
		1397	} else {
		1398	$self->load_header_orig
		1399	or return;
		1400	$self->prepare_orig;
		1401	}
		1402
		1403	1
		1404	}
		1405
		1406	sub find;
		1407	sub find {
		1408	my ($path, $origin) = @_;
		1409
		1410	$path = normalise $path, $origin && $origin->path;
		1411
		1412	cf::lock_wait "map_find:$path";
		1413
		1414	$cf::MAP{$path} || do {
		1415	my $guard = cf::lock_acquire "map_find:$path";
		1416	my $map = new_from_path cf::map $path
		1417	or return;
		1418
		1419	$map->{last_save} = $cf::RUNTIME;
		1420
		1421	$map->load_header
		1422	or return;
		1423
		1424	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1425	# doing this can freeze the server in a sync job, obviously
		1426	#$cf::WAIT_FOR_TICK->wait;
		1427	$map->reset;
		1428	undef $guard;
		1429	return find $path;
		1430	}
		1431
		1432	$cf::MAP{$path} = $map
		1433	}
		1434	}
		1435
		1436	sub pre_load { }
		1437	sub post_load { }
		1438
		1439	sub load {
		1440	my ($self) = @_;
		1441
		1442	local $self->{deny_reset} = 1; # loading can take a long time
		1443
		1444	my $path = $self->{path};
		1445	my $guard = cf::lock_acquire "map_load:$path";
		1446
		1447	return if $self->in_memory != cf::MAP_SWAPPED;
		1448
		1449	$self->in_memory (cf::MAP_LOADING);
		1450
		1451	$self->alloc;
		1452
		1453	$self->pre_load;
		1454
		1455	$self->_load_objects ($self->{load_path}, 1)
		1456	or return;
		1457
		1458	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1459	if delete $self->{load_original};
		1460
		1461	if (my $uniq = $self->uniq_path) {
		1462	utf8::encode $uniq;
		1463	if (aio_open $uniq, O_RDONLY, 0) {
		1464	$self->clear_unique_items;
		1465	$self->_load_objects ($uniq, 0);
		1466	}
		1467	}
		1468
		1469	Coro::cede;
		1470
		1471	# now do the right thing for maps
		1472	$self->link_multipart_objects;
		1473
		1474	unless ($self->{deny_activate}) {
		1475	$self->decay_objects;
		1476	$self->fix_auto_apply;
		1477	$self->update_buttons;
		1478	Coro::cede;
		1479	$self->set_darkness_map;
		1480	$self->difficulty ($self->estimate_difficulty)
		1481	unless $self->difficulty;
		1482	Coro::cede;
		1483	$self->activate;
		1484	}
		1485
		1486	$self->post_load;
		1487
		1488	$self->in_memory (cf::MAP_IN_MEMORY);
		1489	}
		1490
		1491	sub customise_for {
		1492	my ($self, $ob) = @_;
		1493
		1494	return find "~" . $ob->name . "/" . $self->{path}
		1495	if $self->per_player;
		1496
		1497	$self
		1498	}
		1499
		1500	# find and load all maps in the 3x3 area around a map
		1501	sub load_diag {
767	my ($map) = @_;	1502	my ($map) = @_;
768		1503
769	my $path = $map->tmpname;	1504	my @diag; # diagonal neighbours
770	defined $path or return;
771		1505
772	unlink "$path.pst";	1506	for (0 .. 3) {
773	};	1507	my $neigh = $map->tile_path ($_)
		1508	or next;
		1509	$neigh = find $neigh, $map
		1510	or next;
		1511	$neigh->load;
774		1512
775	attach_to_maps prio => -10000, package => cf::mapsupport::;	1513	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1514	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1515	}
776		1516
777	#############################################################################	1517	for (@diag) {
778	# load/save perl data associated with player->ob objects	1518	my $neigh = find @$_
779		1519	or next;
780	sub all_objects(@) {	1520	$neigh->load;
781	@_, map all_objects ($_->inv), @_	1521	}
782	}	1522	}
783		1523
784	# TODO: compatibility cruft, remove when no longer needed	1524	sub find_sync {
785	attach_to_players	1525	my ($path, $origin) = @_;
786	on_load => sub {
787	my ($pl, $path) = @_;
788		1526
789	for my $o (all_objects $pl->ob) {	1527	cf::sync_job { find $path, $origin }
790	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1528	}
791	$o->set_ob_key_value ("_perl_data");
792		1529
793	%$o = %{ Storable::thaw pack "H*", $value };	1530	sub do_load_sync {
		1531	my ($map) = @_;
		1532
		1533	cf::sync_job { $map->load };
		1534	}
		1535
		1536	our %MAP_PREFETCH;
		1537	our $MAP_PREFETCHER = undef;
		1538
		1539	sub find_async {
		1540	my ($path, $origin) = @_;
		1541
		1542	$path = normalise $path, $origin && $origin->{path};
		1543
		1544	if (my $map = $cf::MAP{$path}) {
		1545	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1546	}
		1547
		1548	undef $MAP_PREFETCH{$path};
		1549	$MAP_PREFETCHER ||= cf::async {
		1550	while (%MAP_PREFETCH) {
		1551	for my $path (keys %MAP_PREFETCH) {
		1552	my $map = find $path
		1553	or next;
		1554	$map->load;
		1555
		1556	delete $MAP_PREFETCH{$path};
794	}	1557	}
795	}	1558	}
		1559	undef $MAP_PREFETCHER;
		1560	};
		1561	$MAP_PREFETCHER->prio (6);
		1562
		1563	()
		1564	}
		1565
		1566	sub save {
		1567	my ($self) = @_;
		1568
		1569	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1570
		1571	$self->{last_save} = $cf::RUNTIME;
		1572
		1573	return unless $self->dirty;
		1574
		1575	my $save = $self->save_path; utf8::encode $save;
		1576	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1577
		1578	$self->{load_path} = $save;
		1579
		1580	return if $self->{deny_save};
		1581
		1582	local $self->{last_access} = $self->last_access;#d#
		1583
		1584	cf::async {
		1585	$_->contr->save for $self->players;
		1586	};
		1587
		1588	if ($uniq) {
		1589	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1590	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1591	} else {
		1592	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
796	},	1593	}
797	;	1594	}
798		1595
799	#############################################################################	1596	sub swap_out {
		1597	my ($self) = @_;
800		1598
801	=head2 CORE EXTENSIONS	1599	# save first because save cedes
		1600	$self->save;
802		1601
803	Functions and methods that extend core crossfire objects.	1602	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1603
		1604	return if $self->players;
		1605	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1606	return if $self->{deny_save};
		1607
		1608	$self->clear;
		1609	$self->in_memory (cf::MAP_SWAPPED);
		1610	}
		1611
		1612	sub reset_at {
		1613	my ($self) = @_;
		1614
		1615	# TODO: safety, remove and allow resettable per-player maps
		1616	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1617	return 1e99 if $self->{deny_reset};
		1618
		1619	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1620	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1621
		1622	$time + $to
		1623	}
		1624
		1625	sub should_reset {
		1626	my ($self) = @_;
		1627
		1628	$self->reset_at <= $cf::RUNTIME
		1629	}
		1630
		1631	sub reset {
		1632	my ($self) = @_;
		1633
		1634	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1635
		1636	return if $self->players;
		1637	return if $self->isa ("ext::map_per_player");#d#
		1638
		1639	warn "resetting map ", $self->path;#d#
		1640
		1641	$self->in_memory (cf::MAP_SWAPPED);
		1642
		1643	# need to save uniques path
		1644	unless ($self->{deny_save}) {
		1645	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1646
		1647	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1648	if $uniq;
		1649	}
		1650
		1651	delete $cf::MAP{$self->path};
		1652
		1653	$self->clear;
		1654
		1655	$_->clear_links_to ($self) for values %cf::MAP;
		1656
		1657	$self->unlink_save;
		1658	$self->destroy;
		1659	}
		1660
		1661	my $nuke_counter = "aaaa";
		1662
		1663	sub nuke {
		1664	my ($self) = @_;
		1665
		1666	delete $cf::MAP{$self->path};
		1667
		1668	$self->unlink_save;
		1669
		1670	bless $self, "cf::map";
		1671	delete $self->{deny_reset};
		1672	$self->{deny_save} = 1;
		1673	$self->reset_timeout (1);
		1674	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1675
		1676	$cf::MAP{$self->path} = $self;
		1677
		1678	$self->reset; # polite request, might not happen
		1679	}
		1680
		1681	=item cf::map::unique_maps
		1682
		1683	Returns an arrayref of paths of all shared maps that have
		1684	instantiated unique items. May block.
		1685
		1686	=cut
		1687
		1688	sub unique_maps() {
		1689	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1690	or return;
		1691
		1692	my @paths;
		1693
		1694	for (@$files) {
		1695	utf8::decode $_;
		1696	next if /\.pst$/;
		1697	next unless /^$PATH_SEP/o;
		1698
		1699	push @paths, cf::map::normalise $_;
		1700	}
		1701
		1702	\@paths
		1703	}
		1704
		1705	package cf;
		1706
		1707	=back
		1708
		1709	=head3 cf::object
		1710
		1711	=cut
		1712
		1713	package cf::object;
804		1714
805	=over 4	1715	=over 4
806		1716
807	=item cf::player::exists $login	1717	=item $ob->inv_recursive
808		1718
809	Returns true when the given account exists.	1719	Returns the inventory of the object _and_ their inventories, recursively.
810		1720
811	=cut	1721	=cut
812		1722
813	sub cf::player::exists($) {	1723	sub inv_recursive_;
814	cf::player::find $_[0]	1724	sub inv_recursive_ {
815	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1725	map { $_, inv_recursive_ $_->inv } @_
816	}	1726	}
		1727
		1728	sub inv_recursive {
		1729	inv_recursive_ inv $_[0]
		1730	}
		1731
		1732	package cf;
		1733
		1734	=back
		1735
		1736	=head3 cf::object::player
		1737
		1738	=over 4
817		1739
818	=item $player_object->reply ($npc, $msg[, $flags])	1740	=item $player_object->reply ($npc, $msg[, $flags])
819		1741
820	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1742	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
821	can be C<undef>. Does the right thing when the player is currently in a	1743	can be C<undef>. Does the right thing when the player is currently in a
…		…
823		1745
824	=cut	1746	=cut
825		1747
826	# rough implementation of a future "reply" method that works	1748	# rough implementation of a future "reply" method that works
827	# with dialog boxes.	1749	# with dialog boxes.
		1750	#TODO: the first argument must go, split into a $npc->reply_to ( method
828	sub cf::object::player::reply($$$;$) {	1751	sub cf::object::player::reply($$$;$) {
829	my ($self, $npc, $msg, $flags) = @_;	1752	my ($self, $npc, $msg, $flags) = @_;
830		1753
831	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1754	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
832		1755
…		…
836	$msg = $npc->name . " says: $msg" if $npc;	1759	$msg = $npc->name . " says: $msg" if $npc;
837	$self->message ($msg, $flags);	1760	$self->message ($msg, $flags);
838	}	1761	}
839	}	1762	}
840		1763
841	=item $player->ext_reply ($msgid, $msgtype, %msg)
842
843	Sends an ext reply to the player.
844
845	=cut
846
847	sub cf::player::ext_reply($$$%) {
848	my ($self, $id, %msg) = @_;
849
850	$msg{msgid} = $id;
851
852	$self->send ("ext " . to_json \%msg);
853	}
854
855	=item $player_object->may ("access")	1764	=item $player_object->may ("access")
856		1765
857	Returns wether the given player is authorized to access resource "access"	1766	Returns wether the given player is authorized to access resource "access"
858	(e.g. "command_wizcast").	1767	(e.g. "command_wizcast").
859		1768
…		…
866	(ref $cf::CFG{"may_$access"}	1775	(ref $cf::CFG{"may_$access"}
867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1776	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
868	: $cf::CFG{"may_$access"})	1777	: $cf::CFG{"may_$access"})
869	}	1778	}
870		1779
871	=cut	1780	=item $player_object->enter_link
872		1781
873	#############################################################################	1782	Freezes the player and moves him/her to a special map (C<{link}>).
		1783
		1784	The player should be reasonably safe there for short amounts of time. You
		1785	I<MUST> call C<leave_link> as soon as possible, though.
		1786
		1787	Will never block.
		1788
		1789	=item $player_object->leave_link ($map, $x, $y)
		1790
		1791	Moves the player out of the special C<{link}> map onto the specified
		1792	map. If the map is not valid (or omitted), the player will be moved back
		1793	to the location he/she was before the call to C<enter_link>, or, if that
		1794	fails, to the emergency map position.
		1795
		1796	Might block.
		1797
		1798	=cut
		1799
		1800	sub link_map {
		1801	unless ($LINK_MAP) {
		1802	$LINK_MAP = cf::map::find "{link}"
		1803	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1804	$LINK_MAP->load;
		1805	}
		1806
		1807	$LINK_MAP
		1808	}
		1809
		1810	sub cf::object::player::enter_link {
		1811	my ($self) = @_;
		1812
		1813	$self->deactivate_recursive;
		1814
		1815	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1816
		1817	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1818	if $self->map;
		1819
		1820	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1821	}
		1822
		1823	sub cf::object::player::leave_link {
		1824	my ($self, $map, $x, $y) = @_;
		1825
		1826	my $link_pos = delete $self->{_link_pos};
		1827
		1828	unless ($map) {
		1829	# restore original map position
		1830	($map, $x, $y) = @{ $link_pos || [] };
		1831	$map = cf::map::find $map;
		1832
		1833	unless ($map) {
		1834	($map, $x, $y) = @$EMERGENCY_POSITION;
		1835	$map = cf::map::find $map
		1836	or die "FATAL: cannot load emergency map\n";
		1837	}
		1838	}
		1839
		1840	($x, $y) = (-1, -1)
		1841	unless (defined $x) && (defined $y);
		1842
		1843	# use -1 or undef as default coordinates, not 0, 0
		1844	($x, $y) = ($map->enter_x, $map->enter_y)
		1845	if $x <=0 && $y <= 0;
		1846
		1847	$map->load;
		1848	$map->load_diag;
		1849
		1850	return unless $self->contr->active;
		1851	$self->activate_recursive;
		1852
		1853	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1854	$self->enter_map ($map, $x, $y);
		1855	}
		1856
		1857	cf::player->attach (
		1858	on_logout => sub {
		1859	my ($pl) = @_;
		1860
		1861	# abort map switching before logout
		1862	if ($pl->ob->{_link_pos}) {
		1863	cf::sync_job {
		1864	$pl->ob->leave_link
		1865	};
		1866	}
		1867	},
		1868	on_login => sub {
		1869	my ($pl) = @_;
		1870
		1871	# try to abort aborted map switching on player login :)
		1872	# should happen only on crashes
		1873	if ($pl->ob->{_link_pos}) {
		1874	$pl->ob->enter_link;
		1875	(async {
		1876	$pl->ob->reply (undef,
		1877	"There was an internal problem at your last logout, "
		1878	. "the server will try to bring you to your intended destination in a second.",
		1879	cf::NDI_RED);
		1880	# we need this sleep as the login has a concurrent enter_exit running
		1881	# and this sleep increases chances of the player not ending up in scorn
		1882	Coro::Timer::sleep 1;
		1883	$pl->ob->leave_link;
		1884	})->prio (2);
		1885	}
		1886	},
		1887	);
		1888
		1889	=item $player_object->goto ($path, $x, $y)
		1890
		1891	=cut
		1892
		1893	sub cf::object::player::goto {
		1894	my ($self, $path, $x, $y) = @_;
		1895
		1896	$self->enter_link;
		1897
		1898	(async {
		1899	my $map = eval {
		1900	my $map = cf::map::find $path;
		1901	$map = $map->customise_for ($self) if $map;
		1902	$map
		1903	} or
		1904	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1905
		1906	$self->leave_link ($map, $x, $y);
		1907	})->prio (1);
		1908	}
		1909
		1910	=item $player_object->enter_exit ($exit_object)
		1911
		1912	=cut
		1913
		1914	sub parse_random_map_params {
		1915	my ($spec) = @_;
		1916
		1917	my $rmp = { # defaults
		1918	xsize => (cf::rndm 15, 40),
		1919	ysize => (cf::rndm 15, 40),
		1920	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1921	#layout => string,
		1922	};
		1923
		1924	for (split /\n/, $spec) {
		1925	my ($k, $v) = split /\s+/, $_, 2;
		1926
		1927	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1928	}
		1929
		1930	$rmp
		1931	}
		1932
		1933	sub prepare_random_map {
		1934	my ($exit) = @_;
		1935
		1936	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1937
		1938	# all this does is basically replace the /! path by
		1939	# a new random map path (?random/...) with a seed
		1940	# that depends on the exit object
		1941
		1942	my $rmp = parse_random_map_params $exit->msg;
		1943
		1944	if ($exit->map) {
		1945	$rmp->{region} = $exit->region->name;
		1946	$rmp->{origin_map} = $exit->map->path;
		1947	$rmp->{origin_x} = $exit->x;
		1948	$rmp->{origin_y} = $exit->y;
		1949	}
		1950
		1951	$rmp->{random_seed} ||= $exit->random_seed;
		1952
		1953	my $data = cf::to_json $rmp;
		1954	my $md5 = Digest::MD5::md5_hex $data;
		1955	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1956
		1957	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1958	aio_write $fh, 0, (length $data), $data, 0;
		1959	undef $fh;
		1960	aio_rename "$meta~", $meta;
		1961
		1962	$exit->slaying ("?random/$md5");
		1963	$exit->msg (undef);
		1964	}
		1965	}
		1966
		1967	sub cf::object::player::enter_exit {
		1968	my ($self, $exit) = @_;
		1969
		1970	return unless $self->type == cf::PLAYER;
		1971
		1972	if ($exit->slaying eq "/!") {
		1973	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1974	cf::sync_job { prepare_random_map $exit };
		1975	}
		1976
		1977	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1978	my $hp = $exit->stats->hp;
		1979	my $sp = $exit->stats->sp;
		1980
		1981	$self->enter_link;
		1982
		1983	(async {
		1984	$self->deactivate_recursive; # just to be sure
		1985	unless (eval {
		1986	$self->goto ($slaying, $hp, $sp);
		1987
		1988	1;
		1989	}) {
		1990	$self->message ("Something went wrong deep within the crossfire server. "
		1991	. "I'll try to bring you back to the map you were before. "
		1992	. "Please report this to the dungeon master!",
		1993	cf::NDI_UNIQUE | cf::NDI_RED);
		1994
		1995	warn "ERROR in enter_exit: $@";
		1996	$self->leave_link;
		1997	}
		1998	})->prio (1);
		1999	}
		2000
		2001	=head3 cf::client
		2002
		2003	=over 4
		2004
		2005	=item $client->send_drawinfo ($text, $flags)
		2006
		2007	Sends a drawinfo packet to the client. Circumvents output buffering so
		2008	should not be used under normal circumstances.
		2009
		2010	=cut
		2011
		2012	sub cf::client::send_drawinfo {
		2013	my ($self, $text, $flags) = @_;
		2014
		2015	utf8::encode $text;
		2016	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2017	}
		2018
		2019
		2020	=item $success = $client->query ($flags, "text", \&cb)
		2021
		2022	Queues a query to the client, calling the given callback with
		2023	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2024	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2025
		2026	Queries can fail, so check the return code. Or don't, as queries will become
		2027	reliable at some point in the future.
		2028
		2029	=cut
		2030
		2031	sub cf::client::query {
		2032	my ($self, $flags, $text, $cb) = @_;
		2033
		2034	return unless $self->state == ST_PLAYING
		2035	|| $self->state == ST_SETUP
		2036	|| $self->state == ST_CUSTOM;
		2037
		2038	$self->state (ST_CUSTOM);
		2039
		2040	utf8::encode $text;
		2041	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2042
		2043	$self->send_packet ($self->{query_queue}[0][0])
		2044	if @{ $self->{query_queue} } == 1;
		2045	}
		2046
		2047	cf::client->attach (
		2048	on_reply => sub {
		2049	my ($ns, $msg) = @_;
		2050
		2051	# this weird shuffling is so that direct followup queries
		2052	# get handled first
		2053	my $queue = delete $ns->{query_queue}
		2054	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2055
		2056	(shift @$queue)->[1]->($msg);
		2057	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2058
		2059	push @{ $ns->{query_queue} }, @$queue;
		2060
		2061	if (@{ $ns->{query_queue} } == @$queue) {
		2062	if (@$queue) {
		2063	$ns->send_packet ($ns->{query_queue}[0][0]);
		2064	} else {
		2065	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2066	}
		2067	}
		2068	},
		2069	);
		2070
		2071	=item $client->async (\&cb)
		2072
		2073	Create a new coroutine, running the specified callback. The coroutine will
		2074	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2075	or loss of connection).
		2076
		2077	=cut
		2078
		2079	sub cf::client::async {
		2080	my ($self, $cb) = @_;
		2081
		2082	my $coro = &Coro::async ($cb);
		2083
		2084	$coro->on_destroy (sub {
		2085	delete $self->{_coro}{$coro+0};
		2086	});
		2087
		2088	$self->{_coro}{$coro+0} = $coro;
		2089
		2090	$coro
		2091	}
		2092
		2093	cf::client->attach (
		2094	on_destroy => sub {
		2095	my ($ns) = @_;
		2096
		2097	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2098	},
		2099	);
		2100
		2101	=back
		2102
874		2103
875	=head2 SAFE SCRIPTING	2104	=head2 SAFE SCRIPTING
876		2105
877	Functions that provide a safe environment to compile and execute	2106	Functions that provide a safe environment to compile and execute
878	snippets of perl code without them endangering the safety of the server	2107	snippets of perl code without them endangering the safety of the server
…		…
891		2120
892	# here we export the classes and methods available to script code	2121	# here we export the classes and methods available to script code
893		2122
894	=pod	2123	=pod
895		2124
896	The following fucntions and emthods are available within a safe environment:	2125	The following functions and methods are available within a safe environment:
897		2126
898	cf::object contr pay_amount pay_player map	2127	cf::object contr pay_amount pay_player map
899	cf::object::player player	2128	cf::object::player player
900	cf::player peaceful	2129	cf::player peaceful
901	cf::map trigger	2130	cf::map trigger
…		…
994	The parameter C<$family> should best start with the name of the extension	2223	The parameter C<$family> should best start with the name of the extension
995	using it, it should be unique.	2224	using it, it should be unique.
996		2225
997	=over 4	2226	=over 4
998		2227
999	=item $hashref = cf::db_get $family
1000
1001	Return a hashref for use by the extension C<$family>, which can be
1002	modified. After modifications, you have to call C<cf::db_dirty> or
1003	C<cf::db_sync>.
1004
1005	=item $value = cf::db_get $family => $key	2228	=item $value = cf::db_get $family => $key
1006		2229
1007	Returns a single value from the database	2230	Returns a single value from the database.
1008
1009	=item cf::db_put $family => $hashref
1010
1011	Stores the given family hashref into the database. Updates are delayed, if
1012	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1013		2231
1014	=item cf::db_put $family => $key => $value	2232	=item cf::db_put $family => $key => $value
1015		2233
1016	Stores the given C<$value> in the family hash. Updates are delayed, if you	2234	Stores the given C<$value> in the family.
1017	want the data to be synced to disk immediately, use C<cf::db_sync>.
1018
1019	=item cf::db_dirty
1020
1021	Marks the database as dirty, to be updated at a later time.
1022
1023	=item cf::db_sync
1024
1025	Immediately write the database to disk I<if it is dirty>.
1026		2235
1027	=cut	2236	=cut
1028		2237
1029	our $DB;	2238	our $DB;
1030		2239
1031	{	2240	sub db_init {
		2241	unless ($DB) {
		2242	$DB = BDB::db_create $DB_ENV;
		2243
		2244	cf::sync_job {
		2245	eval {
		2246	$DB->set_flags (BDB::CHKSUM);
		2247
		2248	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2249	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2250	cf::cleanup "db_open(db): $!" if $!;
		2251	};
		2252	cf::cleanup "db_open(db): $@" if $@;
		2253	};
		2254
1032	my $path = cf::localdir . "/database.pst";	2255	my $path = cf::localdir . "/database.pst";
		2256	if (stat $path) {
		2257	cf::sync_job {
		2258	my $pst = Storable::retrieve $path;
1033		2259
1034	sub db_load() {	2260	cf::db_put (board => data => $pst->{board});
1035	warn "loading database $path\n";#d# remove later	2261	cf::db_put (guildrules => data => $pst->{guildrules});
1036	$DB = stat $path ? Storable::retrieve $path : { };	2262	cf::db_put (rent => balance => $pst->{rent}{balance});
1037	}	2263	BDB::db_env_txn_checkpoint $DB_ENV;
1038		2264
1039	my $pid;	2265	unlink $path;
1040
1041	sub db_save() {
1042	warn "saving database $path\n";#d# remove later
1043	waitpid $pid, 0 if $pid;
1044	if (0 == ($pid = fork)) {
1045	$DB->{_meta}{version} = 1;
1046	Storable::nstore $DB, "$path~";
1047	rename "$path~", $path;
1048	cf::_exit 0 if defined $pid;
1049	}	2266	};
1050	}	2267	}
1051
1052	my $dirty;
1053
1054	sub db_sync() {
1055	db_save if $dirty;
1056	undef $dirty;
1057	}
1058
1059	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1060	db_sync;
1061	});	2268	}
		2269	}
1062		2270
1063	sub db_dirty() {
1064	$dirty = 1;
1065	$idle->start;
1066	}
1067
1068	sub db_get($;$) {	2271	sub db_get($$) {
1069	@_ >= 2	2272	my $key = "$_[0]/$_[1]";
1070	? $DB->{$_[0]}{$_[1]}
1071	: ($DB->{$_[0]} ||= { })
1072	}
1073		2273
		2274	cf::sync_job {
		2275	BDB::db_get $DB, undef, $key, my $data;
		2276
		2277	$! ? ()
		2278	: Compress::LZF::sthaw $data
		2279	}
		2280	}
		2281
1074	sub db_put($$;$) {	2282	sub db_put($$$) {
1075	if (@_ >= 3) {	2283	BDB::dbreq_pri 4;
1076	$DB->{$_[0]}{$_[1]} = $_[2];	2284	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2285	}
		2286
		2287	#############################################################################
		2288	# the server's init and main functions
		2289
		2290	sub load_facedata {
		2291	my $path = sprintf "%s/facedata", cf::datadir;
		2292
		2293	warn "loading facedata from $path\n";
		2294
		2295	my $faces;
		2296	0 < aio_load $path, $faces
		2297	or die "$path: $!";
		2298
		2299	Coro::cede;
		2300	$faces = Storable::thaw $faces;
		2301	Coro::cede;
		2302
		2303	my $meta = delete $faces->{""};
		2304	$meta->{version} == 1
		2305	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2306
		2307	while (my ($face, $info) = each %$faces) {
		2308	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2309	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2310	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2311	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2312	Coro::cede;
		2313	}
		2314
		2315	while (my ($face, $info) = each %$faces) {
		2316	next unless $info->{smooth};
		2317	my $idx = cf::face::find $face
		2318	or next;
		2319	if (my $smooth = cf::face::find $info->{smooth}) {
		2320	cf::face::set_smooth $idx, $smooth;
1077	} else {	2321	} else {
1078	$DB->{$_[0]} = $_[1];	2322	warn "smooth face '$info->{smooth}' not found for face '$face'";
1079	}
1080	db_dirty;
1081	}
1082
1083	attach_global
1084	prio => 10000,
1085	on_cleanup => sub {
1086	db_sync;
1087	},	2323	}
		2324	Coro::cede;
1088	;	2325	}
1089	}
1090		2326
1091	#############################################################################	2327	1
1092	# the server's main()	2328	}
		2329
		2330	sub reload_resources {
		2331	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2332	or die "unable to load regions file\n";#d#
		2333	load_facedata
		2334	or die "unable to load facedata\n";#d#
		2335	}
		2336
		2337	sub init {
		2338	reload_resources;
		2339	}
1093		2340
1094	sub cfg_load {	2341	sub cfg_load {
1095	open my $fh, "<:utf8", cf::confdir . "/config"	2342	open my $fh, "<:utf8", cf::confdir . "/config"
1096	or return;	2343	or return;
1097		2344
1098	local $/;	2345	local $/;
1099	*CFG = YAML::Syck::Load <$fh>;	2346	*CFG = YAML::Syck::Load <$fh>;
		2347
		2348	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2349
		2350	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2351	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2352
		2353	if (exists $CFG{mlockall}) {
		2354	eval {
		2355	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2356	and die "WARNING: m(un)lockall failed: $!\n";
		2357	};
		2358	warn $@ if $@;
		2359	}
1100	}	2360	}
1101		2361
1102	sub main {	2362	sub main {
		2363	# we must not ever block the main coroutine
		2364	local $Coro::idle = sub {
		2365	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2366	(async {
		2367	Event::one_event;
		2368	})->prio (Coro::PRIO_MAX);
		2369	};
		2370
1103	cfg_load;	2371	cfg_load;
1104	db_load;	2372	db_init;
1105	load_extensions;	2373	load_extensions;
		2374
		2375	$TICK_WATCHER->start;
1106	Event::loop;	2376	Event::loop;
1107	}	2377	}
1108		2378
1109	#############################################################################	2379	#############################################################################
1110	# initialisation	2380	# initialisation and cleanup
1111		2381
		2382	# install some emergency cleanup handlers
		2383	BEGIN {
		2384	for my $signal (qw(INT HUP TERM)) {
		2385	Event->signal (
		2386	reentrant => 0,
		2387	data => WF_AUTOCANCEL,
		2388	signal => $signal,
		2389	prio => 0,
		2390	cb => sub {
		2391	cf::cleanup "SIG$signal";
		2392	},
		2393	);
		2394	}
		2395	}
		2396
		2397	sub emergency_save() {
		2398	my $freeze_guard = cf::freeze_mainloop;
		2399
		2400	warn "enter emergency perl save\n";
		2401
		2402	cf::sync_job {
		2403	# use a peculiar iteration method to avoid tripping on perl
		2404	# refcount bugs in for. also avoids problems with players
		2405	# and maps saved/destroyed asynchronously.
		2406	warn "begin emergency player save\n";
		2407	for my $login (keys %cf::PLAYER) {
		2408	my $pl = $cf::PLAYER{$login} or next;
		2409	$pl->valid or next;
		2410	$pl->save;
		2411	}
		2412	warn "end emergency player save\n";
		2413
		2414	warn "begin emergency map save\n";
		2415	for my $path (keys %cf::MAP) {
		2416	my $map = $cf::MAP{$path} or next;
		2417	$map->valid or next;
		2418	$map->save;
		2419	}
		2420	warn "end emergency map save\n";
		2421
		2422	warn "begin emergency database checkpoint\n";
		2423	BDB::db_env_txn_checkpoint $DB_ENV;
		2424	warn "end emergency database checkpoint\n";
		2425	};
		2426
		2427	warn "leave emergency perl save\n";
		2428	}
		2429
		2430	sub post_cleanup {
		2431	my ($make_core) = @_;
		2432
		2433	warn Carp::longmess "post_cleanup backtrace"
		2434	if $make_core;
		2435	}
		2436
1112	sub _perl_reload(&) {	2437	sub reload() {
1113	my ($msg) = @_;	2438	# can/must only be called in main
		2439	if ($Coro::current != $Coro::main) {
		2440	warn "can only reload from main coroutine";
		2441	return;
		2442	}
1114		2443
1115	$msg->("reloading...");	2444	warn "reloading...";
1116		2445
1117	eval {	2446	warn "entering sync_job";
1118	# cancel all watchers	2447
		2448	cf::sync_job {
		2449	cf::write_runtime; # external watchdog should not bark
		2450	cf::emergency_save;
		2451	cf::write_runtime; # external watchdog should not bark
		2452
		2453	warn "syncing database to disk";
		2454	BDB::db_env_txn_checkpoint $DB_ENV;
		2455
		2456	# if anything goes wrong in here, we should simply crash as we already saved
		2457
		2458	warn "cancelling all WF_AUTOCANCEL watchers";
1119	for (Event::all_watchers) {	2459	for (Event::all_watchers) {
1120	$_->cancel if $_->data & WF_AUTOCANCEL;	2460	$_->cancel if $_->data & WF_AUTOCANCEL;
1121	}	2461	}
1122		2462
1123	# unload all extensions	2463	warn "flushing outstanding aio requests";
1124	for (@exts) {	2464	for (;;) {
1125	$msg->("unloading <$_>");	2465	BDB::flush;
1126	unload_extension $_;	2466	IO::AIO::flush;
		2467	Coro::cede;
		2468	last unless IO::AIO::nreqs || BDB::nreqs;
		2469	warn "iterate...";
		2470	}
		2471
		2472	++$RELOAD;
		2473
		2474	warn "cancelling all extension coros";
		2475	$_->cancel for values %EXT_CORO;
		2476	%EXT_CORO = ();
		2477
		2478	warn "removing commands";
		2479	%COMMAND = ();
		2480
		2481	warn "removing ext commands";
		2482	%EXTCMD = ();
		2483
		2484	warn "unloading/nuking all extensions";
		2485	for my $pkg (@EXTS) {
		2486	warn "... unloading $pkg";
		2487
		2488	if (my $cb = $pkg->can ("unload")) {
		2489	eval {
		2490	$cb->($pkg);
		2491	1
		2492	} or warn "$pkg unloaded, but with errors: $@";
1127	}	2493	}
1128		2494
		2495	warn "... nuking $pkg";
		2496	Symbol::delete_package $pkg;
		2497	}
		2498
1129	# unload all modules loaded from $LIBDIR	2499	warn "unloading all perl modules loaded from $LIBDIR";
1130	while (my ($k, $v) = each %INC) {	2500	while (my ($k, $v) = each %INC) {
1131	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2501	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1132		2502
1133	$msg->("removing <$k>");	2503	warn "... unloading $k";
1134	delete $INC{$k};	2504	delete $INC{$k};
1135		2505
1136	$k =~ s/\.pm$//;	2506	$k =~ s/\.pm$//;
1137	$k =~ s/\//::/g;	2507	$k =~ s/\//::/g;
1138		2508
…		…
1141	}	2511	}
1142		2512
1143	Symbol::delete_package $k;	2513	Symbol::delete_package $k;
1144	}	2514	}
1145		2515
1146	# sync database to disk
1147	cf::db_sync;
1148
1149	# get rid of safe::, as good as possible	2516	warn "getting rid of safe::, as good as possible";
1150	Symbol::delete_package "safe::$_"	2517	Symbol::delete_package "safe::$_"
1151	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2518	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1152		2519
1153	# remove register_script_function callbacks
1154	# TODO
1155
1156	# unload cf.pm "a bit"	2520	warn "unloading cf.pm \"a bit\"";
1157	delete $INC{"cf.pm"};	2521	delete $INC{"cf.pm"};
1158		2522
1159	# don't, removes xs symbols, too,	2523	# don't, removes xs symbols, too,
1160	# and global variables created in xs	2524	# and global variables created in xs
1161	#Symbol::delete_package __PACKAGE__;	2525	#Symbol::delete_package __PACKAGE__;
1162		2526
1163	# reload cf.pm	2527	warn "unload completed, starting to reload now";
		2528
1164	$msg->("reloading cf.pm");	2529	warn "reloading cf.pm";
1165	require cf;	2530	require cf;
		2531	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1166		2532
1167	# load config and database again	2533	warn "loading config and database again";
1168	cf::cfg_load;	2534	cf::cfg_load;
1169	cf::db_load;
1170		2535
1171	# load extensions	2536	warn "loading extensions";
1172	$msg->("load extensions");
1173	cf::load_extensions;	2537	cf::load_extensions;
1174		2538
1175	# reattach attachments to objects	2539	warn "reattaching attachments to objects/players";
1176	$msg->("reattach");	2540	_global_reattach; # objects, sockets
1177	_global_reattach;	2541	warn "reattaching attachments to maps";
		2542	reattach $_ for values %MAP;
		2543	warn "reattaching attachments to players";
		2544	reattach $_ for values %PLAYER;
		2545
		2546	warn "loading reloadable resources";
		2547	reload_resources;
		2548
		2549	warn "leaving sync_job";
		2550
		2551	1
		2552	} or do {
		2553	warn $@;
		2554	warn "error while reloading, exiting.";
		2555	exit 1;
1178	};	2556	};
1179	$msg->($@) if $@;
1180		2557
1181	$msg->("reloaded");	2558	warn "reloaded";
1182	};	2559	};
1183		2560
1184	sub perl_reload() {	2561	our $RELOAD_WATCHER; # used only during reload
1185	_perl_reload {
1186	warn $_[0];
1187	print "$_[0]\n";
1188	};
1189	}
1190		2562
1191	register "<global>", __PACKAGE__;
1192
1193	register_command "perl-reload" => sub {	2563	register_command "reload" => sub {
1194	my ($who, $arg) = @_;	2564	my ($who, $arg) = @_;
1195		2565
1196	if ($who->flag (FLAG_WIZ)) {	2566	if ($who->flag (FLAG_WIZ)) {
1197	_perl_reload {	2567	$who->message ("reloading server.");
1198	warn $_[0];	2568
1199	$who->message ($_[0]);	2569	# doing reload synchronously and two reloads happen back-to-back,
		2570	# coro crashes during coro_state_free->destroy here.
		2571
		2572	$RELOAD_WATCHER ||= Event->timer (
		2573	reentrant => 0,
		2574	after => 0,
		2575	data => WF_AUTOCANCEL,
		2576	cb => sub {
		2577	reload;
		2578	undef $RELOAD_WATCHER;
		2579	},
1200	};	2580	);
1201	}	2581	}
1202	};	2582	};
1203		2583
1204	unshift @INC, $LIBDIR;	2584	unshift @INC, $LIBDIR;
1205		2585
		2586	my $bug_warning = 0;
		2587
1206	$TICK_WATCHER = Event->timer (	2588	$TICK_WATCHER = Event->timer (
		2589	reentrant => 0,
		2590	parked => 1,
1207	prio => 0,	2591	prio => 0,
1208	at => $NEXT_TICK || 1,	2592	at => $NEXT_TICK || $TICK,
1209	data => WF_AUTOCANCEL,	2593	data => WF_AUTOCANCEL,
1210	cb => sub {	2594	cb => sub {
		2595	if ($Coro::current != $Coro::main) {
		2596	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2597	unless ++$bug_warning > 10;
		2598	return;
		2599	}
		2600
		2601	$NOW = Event::time;
		2602
1211	cf::server_tick; # one server iteration	2603	cf::server_tick; # one server iteration
1212		2604	$RUNTIME += $TICK;
1213	my $NOW = Event::time;
1214	$NEXT_TICK += $TICK;	2605	$NEXT_TICK += $TICK;
1215		2606
		2607	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2608	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2609	Coro::async_pool {
		2610	write_runtime
		2611	or warn "ERROR: unable to write runtime file: $!";
		2612	};
		2613	}
		2614
		2615	$WAIT_FOR_TICK->broadcast;
		2616	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2617
		2618	# my $AFTER = Event::time;
		2619	# warn $AFTER - $NOW;#d#
		2620
1216	# if we are delayed by four ticks or more, skip them all	2621	# if we are delayed by four ticks or more, skip them all
1217	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2622	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1218		2623
1219	$TICK_WATCHER->at ($NEXT_TICK);	2624	$TICK_WATCHER->at ($NEXT_TICK);
1220	$TICK_WATCHER->start;	2625	$TICK_WATCHER->start;
1221	},	2626	},
1222	);	2627	);
1223		2628
		2629	{
		2630	BDB::max_poll_time $TICK * 0.1;
		2631	$BDB_POLL_WATCHER = Event->io (
		2632	reentrant => 0,
		2633	fd => BDB::poll_fileno,
		2634	poll => 'r',
		2635	prio => 0,
		2636	data => WF_AUTOCANCEL,
		2637	cb => \&BDB::poll_cb,
		2638	);
		2639	BDB::min_parallel 8;
		2640
		2641	BDB::set_sync_prepare {
		2642	my $status;
		2643	my $current = $Coro::current;
		2644	(
		2645	sub {
		2646	$status = $!;
		2647	$current->ready; undef $current;
		2648	},
		2649	sub {
		2650	Coro::schedule while defined $current;
		2651	$! = $status;
		2652	},
		2653	)
		2654	};
		2655
		2656	unless ($DB_ENV) {
		2657	$DB_ENV = BDB::db_env_create;
		2658
		2659	cf::sync_job {
		2660	eval {
		2661	BDB::db_env_open
		2662	$DB_ENV,
		2663	$BDB_ENV_DIR,
		2664	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2665	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2666	0666;
		2667
		2668	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2669
		2670	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2671	$DB_ENV->set_lk_detect;
		2672	};
		2673
		2674	cf::cleanup "db_env_open(db): $@" if $@;
		2675	};
		2676	}
		2677	}
		2678
		2679	{
		2680	IO::AIO::min_parallel 8;
		2681
		2682	undef $Coro::AIO::WATCHER;
1224	IO::AIO::max_poll_time $TICK * 0.2;	2683	IO::AIO::max_poll_time $TICK * 0.1;
1225		2684	$AIO_POLL_WATCHER = Event->io (
1226	Event->io (fd => IO::AIO::poll_fileno,	2685	reentrant => 0,
1227	poll => 'r',
1228	prio => 5,
1229	data => WF_AUTOCANCEL,	2686	data => WF_AUTOCANCEL,
		2687	fd => IO::AIO::poll_fileno,
		2688	poll => 'r',
		2689	prio => 6,
1230	cb => \&IO::AIO::poll_cb);	2690	cb => \&IO::AIO::poll_cb,
		2691	);
		2692	}
		2693
		2694	END { cf::emergency_save }
1231		2695
1232	1	2696	1
1233		2697

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