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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.63 by root, Fri Sep 8 17:41:41 2006 UTC vs.
Revision 1.236 by root, Thu Apr 12 14:18:05 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
		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;
		26	use YAML::Syck ();
		27	use IO::AIO 2.32 ();
10	use Time::HiRes;	28	use Time::HiRes;
11	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
12	$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
13		37
14	use strict;	38	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		39	$YAML::Syck::ImplicitUnicode = 1;
15		40
16	_init_vars;	41	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		42
		43	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		44
18	our %COMMAND = ();	45	our %COMMAND = ();
		46	our %COMMAND_TIME = ();
		47
		48	our @EXTS = (); # list of extension package names
		49	our %EXTCMD = ();
		50	our %EXT_CORO = (); # coroutines bound to extensions
		51	our %EXT_MAP = (); # pluggable maps
		52
		53	our $RELOAD; # number of reloads so far
19	our @EVENT;	54	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	55	our $LIBDIR = datadir . "/ext";
21		56
22	our $TICK = MAX_TIME * 1e-6;	57	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	58	our $TICK_WATCHER;
		59	our $AIO_POLL_WATCHER;
		60	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
24	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;
		67
		68	our %CFG;
		69
		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;
		105
		106	#############################################################################
		107
		108	=head2 GLOBAL VARIABLES
		109
		110	=over 4
		111
		112	=item $cf::UPTIME
		113
		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.
		120
		121	=item $cf::LIBDIR
		122
		123	The perl library directory, where extensions and cf-specific modules can
		124	be found. It will be added to C<@INC> automatically.
		125
		126	=item $cf::NOW
		127
		128	The time of the last (current) server tick.
		129
		130	=item $cf::TICK
		131
		132	The interval between server ticks, in seconds.
		133
		134	=item %cf::CFG
		135
		136	Configuration for the server, loaded from C</etc/crossfire/config>, or
		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.
		145
		146	=back
		147
		148	=cut
25		149
26	BEGIN {	150	BEGIN {
27	*CORE::GLOBAL::warn = sub {	151	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	152	my $msg = join "", @_;
		153	utf8::encode $msg;
		154
29	$msg .= "\n"	155	$msg .= "\n"
30	unless $msg =~ /\n$/;	156	unless $msg =~ /\n$/;
31		157
32	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	158	LOG llevError, $msg;
34	};	159	};
35	}	160	}
36		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';
37	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	167	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
38		168
39	# 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
40	# within the Safe compartment.	170	# within the Safe compartment.
41	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	171	for my $pkg (qw(
		172	cf::global cf::attachable
		173	cf::object cf::object::player
		174	cf::client cf::player
		175	cf::arch cf::living
		176	cf::map cf::party cf::region
		177	)) {
42	no strict 'refs';	178	no strict 'refs';
43	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	179	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
44	}	180	}
45		181
46	$Event::DIED = sub {	182	$Event::DIED = sub {
47	warn "error in event callback: @_";	183	warn "error in event callback: @_";
48	};	184	};
49		185
50	my %ext_pkg;	186	=head2 UTILITY FUNCTIONS
51	my @exts;	187
52	my @hook;	188	=over 4
53	my %command;	189
54	my %extcmd;	190	=item dumpval $ref
		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
		213	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		214
		215	=item $ref = cf::from_json $json
		216
		217	Converts a JSON string into the corresponding perl data structure.
		218
		219	=item $json = cf::to_json $ref
		220
		221	Converts a perl data structure into its JSON representation.
		222
		223	=item cf::lock_wait $string
		224
		225	Wait until the given lock is available. See cf::lock_acquire.
		226
		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 => $type });
		387	}
		388
		389	=back
		390
		391	=cut
55		392
56	#############################################################################	393	#############################################################################
57	# utility functions
58		394
59	use JSON::Syck (); # TODO# replace by JSON::PC once working	395	=head2 ATTACHABLE OBJECTS
60		396
61	sub from_json($) {	397	Many objects in crossfire are so-called attachable objects. That means you can
62	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	398	attach callbacks/event handlers (a collection of which is called an "attachment")
63	JSON::Syck::Load $_[0]	399	to it. All such attachable objects support the following methods.
64	}
65		400
66	sub to_json($) {	401	In the following description, CLASS can be any of C<global>, C<object>
67	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	402	C<player>, C<client> or C<map> (i.e. the attachable objects in
68	JSON::Syck::Dump $_[0]	403	crossfire+).
69	}
70
71	#############################################################################
72	# "new" plug-in system
73
74	=head3 EVENTS AND OBJECT ATTACHMENTS
75		404
76	=over 4	405	=over 4
77		406
78	=item $object->attach ($attachment, key => $value...)
79
80	=item $object->detach ($attachment)
81
82	Attach/detach a pre-registered attachment to an object.
83
84	=item $player->attach ($attachment, key => $value...)
85
86	=item $player->detach ($attachment)
87
88	Attach/detach a pre-registered attachment to a player.
89
90	=item $map->attach ($attachment, key => $value...)	407	=item $attachable->attach ($attachment, key => $value...)
91		408
92	=item $map->detach ($attachment)	409	=item $attachable->detach ($attachment)
93		410
94	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.
95		413
96	=item $bool = $object->attached ($name)	414	Example, attach a minesweeper attachment to the given object, making it a
		415	10x10 minesweeper game:
97		416
98	=item $bool = $player->attached ($name)	417	$obj->attach (minesweeper => width => 10, height => 10);
99		418
100	=item $bool = $map->attached ($name)	419	=item $bool = $attachable->attached ($name)
101		420
102	Checks wether the named attachment is currently attached to the object.	421	Checks wether the named attachment is currently attached to the object.
103		422
104	=item cf::attach_global ...	423	=item cf::CLASS->attach ...
105		424
106	Attach handlers for global events.	425	=item cf::CLASS->detach ...
107		426
108	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
109	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:
110		461
111	=over 4	462	=over 4
112		463
113	=item prio => $number	464	=item prio => $number
114		465
…		…
116	by another C<prio> setting). Lower priority handlers get executed	467	by another C<prio> setting). Lower priority handlers get executed
117	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
118	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
119	unless you know what you are doing.	470	unless you know what you are doing.
120		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
121	=item on_I<event> => \&cb	478	=item on_I<event> => \&cb
122		479
123	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
124	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
125	handlers are recognised generally depends on the type of object these	482	handlers are recognised generally depends on the type of object these
…		…
134	package and register them. Only handlers for eevents supported by the	491	package and register them. Only handlers for eevents supported by the
135	object/class are recognised.	492	object/class are recognised.
136		493
137	=back	494	=back
138		495
139	=item cf::attach_to_type $object_type, $subtype, ...	496	Example, define an attachment called "sockpuppet" that calls the given
		497	event handler when a monster attacks:
140		498
141	Attach handlers for a specific object type (e.g. TRANSPORT) and	499	cf::object::attachment sockpuppet =>
142	subtype. If C<$subtype> is zero or undef, matches all objects of the given	500	on_skill_attack => sub {
143	type.	501	my ($self, $victim) = @_;
144		502	...
145	=item cf::attach_to_objects ...
146
147	Attach handlers to all objects. Do not use this except for debugging or
148	very rare events, as handlers are (obviously) called for I<all> objects in
149	the game.
150
151	=item cf::attach_to_players ...
152
153	Attach handlers to all players.
154
155	=item cf::attach_to_maps ...
156
157	Attach handlers to all maps.
158
159	=item cf:register_attachment $name, ...
160
161	Register an attachment by name through which objects can refer to this
162	attachment.
163
164	=item cf:register_player_attachment $name, ...
165
166	Register an attachment by name through which players can refer to this
167	attachment.
168
169	=item cf:register_map_attachment $name, ...
170
171	Register an attachment by name through which maps can refer to this
172	attachment.
173
174	=cut
175
176	# the following variables are defined in .xs and must not be re-created
177	our @CB_GLOBAL = (); # registry for all global events
178	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
179	our @CB_PLAYER = ();
180	our @CB_TYPE = (); # registry for type (cf-object class) based events
181	our @CB_MAP = ();
182
183	my %attachment;
184
185	sub _attach_cb($\%$$$) {
186	my ($registry, $undo, $event, $prio, $cb) = @_;
187
188	use sort 'stable';
189
190	$cb = [$prio, $cb];
191
192	@{$registry->[$event]} = sort
193	{ $a->[0] cmp $b->[0] }
194	@{$registry->[$event] || []}, $cb;
195
196	push @{$undo->{cb}}, [$event, $cb];
197	}
198
199	# attach handles attaching event callbacks
200	# the only thing the caller has to do is pass the correct
201	# registry (== where the callback attaches to).
202	sub _attach(\@$@) {
203	my ($registry, $klass, @arg) = @_;
204
205	my $prio = 0;
206
207	my %undo = (
208	registry => $registry,
209	cb => [],
210	);
211
212	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
213
214	while (@arg) {
215	my $type = shift @arg;
216
217	if ($type eq "prio") {
218	$prio = shift @arg;
219
220	} elsif ($type eq "package") {
221	my $pkg = shift @arg;
222
223	while (my ($name, $id) = each %cb_id) {
224	if (my $cb = $pkg->can ($name)) {
225	_attach_cb $registry, %undo, $id, $prio, $cb;
226	}
227	}	503	}
228
229	} elsif (exists $cb_id{$type}) {
230	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
231
232	} elsif (ref $type) {
233	warn "attaching objects not supported, ignoring.\n";
234
235	} else {
236	shift @arg;
237	warn "attach argument '$type' not supported, ignoring.\n";
238	}
239	}
240
241	\%undo
242	}
243
244	sub _attach_attachment {
245	my ($obj, $name, %arg) = @_;
246
247	return if exists $obj->{_attachment}{$name};
248
249	my $res;
250
251	if (my $attach = $attachment{$name}) {
252	my $registry = $obj->registry;
253
254	for (@$attach) {
255	my ($klass, @attach) = @$_;
256	$res = _attach @$registry, $klass, @attach;
257	}
258
259	$obj->{$name} = \%arg;
260	} else {
261	warn "object uses attachment '$name' that is not available, postponing.\n";
262	}
263
264	$obj->{_attachment}{$name} = undef;
265
266	$res->{attachment} = $name;
267	$res
268	}
269
270	*cf::object::attach =
271	*cf::player::attach =
272	*cf::map::attach = sub {
273	my ($obj, $name, %arg) = @_;
274
275	_attach_attachment $obj, $name, %arg;
276	};
277
278	# all those should be optimised
279	*cf::object::detach =
280	*cf::player::detach =
281	*cf::map::detach = sub {
282	my ($obj, $name) = @_;
283
284	delete $obj->{_attachment}{$name};
285	reattach ($obj);
286	};
287
288	*cf::object::attached =
289	*cf::player::attached =
290	*cf::map::attached = sub {
291	my ($obj, $name) = @_;
292
293	exists $obj->{_attachment}{$name}
294	};
295
296	sub attach_global {
297	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
298	}
299
300	sub attach_to_type {
301	my $type = shift;
302	my $subtype = shift;
303
304	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
305	}
306
307	sub attach_to_objects {
308	_attach @CB_OBJECT, KLASS_OBJECT, @_
309	}
310
311	sub attach_to_players {
312	_attach @CB_PLAYER, KLASS_PLAYER, @_
313	}
314
315	sub attach_to_maps {
316	_attach @CB_MAP, KLASS_MAP, @_
317	}
318
319	sub register_attachment {
320	my $name = shift;
321
322	$attachment{$name} = [[KLASS_OBJECT, @_]];
323	}
324
325	sub register_player_attachment {
326	my $name = shift;
327
328	$attachment{$name} = [[KLASS_PLAYER, @_]];
329	}
330
331	sub register_map_attachment {
332	my $name = shift;
333
334	$attachment{$name} = [[KLASS_MAP, @_]];
335	}
336
337	our $override;
338	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
339
340	sub override {
341	$override = 1;
342	@invoke_results = ();
343	}
344
345	sub do_invoke {
346	my $event = shift;
347	my $callbacks = shift;
348
349	@invoke_results = ();
350
351	local $override;
352
353	for (@$callbacks) {
354	eval { &{$_->[1]} };
355
356	if ($@) {
357	warn "$@";
358	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
359	override;
360	}
361
362	return 1 if $override;
363	}
364
365	0	504	}
366	}
367		505
368	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	506	=item $attachable->valid
369
370	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
371
372	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
373
374	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
375
376	Generate a global/object/player/map-specific event with the given arguments.
377
378	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
379	removed in future versions), and there is no public API to access override
380	results (if you must, access C<@cf::invoke_results> directly).
381
382	=back
383
384	=head2 methods valid for all pointers
385
386	=over 4
387
388	=item $object->valid
389
390	=item $player->valid
391
392	=item $map->valid
393		507
394	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
395	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
396	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
397	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
398	exception.	512	exception.
399		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
400	=back	703	=back
401		704
402	=cut	705	=cut
403
404	*cf::object::valid =
405	*cf::player::valid =
406	*cf::map::valid = \&cf::_valid;
407		706
408	#############################################################################	707	#############################################################################
409	# object support	708	# object support
410		709
411	sub instantiate {
412	my ($obj, $data) = @_;
413
414	$data = from_json $data;
415
416	for (@$data) {
417	my ($name, $args) = @$_;
418
419	$obj->attach ($name, %{$args || {} });
420	}
421	}
422
423	# basically do the same as instantiate, without calling instantiate
424	sub reattach {	710	sub reattach {
		711	# basically do the same as instantiate, without calling instantiate
425	my ($obj) = @_;	712	my ($obj) = @_;
		713
		714	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		715
426	my $registry = $obj->registry;	716	my $registry = $obj->registry;
427		717
428	@$registry = ();	718	@$registry = ();
429		719
430	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	720	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
431		721
432	for my $name (keys %{ $obj->{_attachment} || {} }) {	722	for my $name (keys %{ $obj->{_attachment} || {} }) {
433	if (my $attach = $attachment{$name}) {	723	if (my $attach = $attachment{$name}) {
434	for (@$attach) {	724	for (@$attach) {
435	my ($klass, @attach) = @$_;	725	my ($klass, @attach) = @$_;
436	_attach @$registry, $klass, @attach;	726	_attach $registry, $klass, @attach;
437	}	727	}
438	} else {	728	} else {
439	warn "object uses attachment '$name' that is not available, postponing.\n";	729	warn "object uses attachment '$name' that is not available, postponing.\n";
440	}	730	}
441	}	731	}
442	}	732	}
443		733
444	sub object_freezer_save {	734	cf::attachable->attach (
445	my ($filename, $rdata, $objs) = @_;
446
447	if (length $$rdata) {
448	warn sprintf "saving %s (%d,%d)\n",
449	$filename, length $$rdata, scalar @$objs;
450
451	if (open my $fh, ">:raw", "$filename~") {
452	chmod SAVE_MODE, $fh;
453	syswrite $fh, $$rdata;
454	close $fh;
455
456	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
457	chmod SAVE_MODE, $fh;
458	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
459	close $fh;
460	rename "$filename.pst~", "$filename.pst";
461	} else {
462	unlink "$filename.pst";
463	}
464
465	rename "$filename~", $filename;
466	} else {
467	warn "FATAL: $filename~: $!\n";
468	}
469	} else {
470	unlink $filename;
471	unlink "$filename.pst";
472	}
473	}
474
475	sub object_thawer_load {
476	my ($filename) = @_;
477
478	local $/;
479
480	my $av;
481
482	#TODO: use sysread etc.
483	if (open my $data, "<:raw:perlio", $filename) {
484	$data = <$data>;
485	if (open my $pst, "<:raw:perlio", "$filename.pst") {
486	$av = eval { (Storable::thaw <$pst>)->{objs} };
487	}
488	return ($data, $av);
489	}
490
491	()
492	}
493
494	attach_to_objects
495	prio => -1000000,	735	prio => -1000000,
		736	on_instantiate => sub {
		737	my ($obj, $data) = @_;
		738
		739	$data = from_json $data;
		740
		741	for (@$data) {
		742	my ($name, $args) = @$_;
		743
		744	$obj->attach ($name, %{$args || {} });
		745	}
		746	},
		747	on_reattach => \&reattach,
496	on_clone => sub {	748	on_clone => sub {
497	my ($src, $dst) = @_;	749	my ($src, $dst) = @_;
498		750
499	@{$dst->registry} = @{$src->registry};	751	@{$dst->registry} = @{$src->registry};
500		752
501	%$dst = %$src;	753	%$dst = %$src;
502		754
503	%{$dst->{_attachment}} = %{$src->{_attachment}}	755	%{$dst->{_attachment}} = %{$src->{_attachment}}
504	if exists $src->{_attachment};	756	if exists $src->{_attachment};
505	},	757	},
506	;	758	);
		759
		760	sub object_freezer_save {
		761	my ($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	}
507		824
508	#############################################################################	825	#############################################################################
509	# old plug-in events	826	# command handling &c
510		827
511	sub inject_event {	828	=item cf::register_command $name => \&callback($ob,$args);
512	my $extension = shift;
513	my $event_code = shift;
514		829
515	my $cb = $hook[$event_code]{$extension}	830	Register a callback for execution when the client sends the user command
516	or return;	831	$name.
517		832
518	&$cb	833	=cut
519	}
520
521	sub inject_global_event {
522	my $event = shift;
523
524	my $cb = $hook[$event]
525	or return;
526
527	List::Util::max map &$_, values %$cb
528	}
529
530	sub inject_command {
531	my ($name, $obj, $params) = @_;
532
533	for my $cmd (@{ $command{$name} }) {
534	$cmd->[1]->($obj, $params);
535	}
536
537	-1
538	}
539		834
540	sub register_command {	835	sub register_command {
541	my ($name, $time, $cb) = @_;	836	my ($name, $cb) = @_;
542		837
543	my $caller = caller;	838	my $caller = caller;
544	#warn "registering command '$name/$time' to '$caller'";	839	#warn "registering command '$name/$time' to '$caller'";
545		840
546	push @{ $command{$name} }, [$time, $cb, $caller];	841	push @{ $COMMAND{$name} }, [$caller, $cb];
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
548	}	842	}
		843
		844	=item cf::register_extcmd $name => \&callback($pl,$packet);
		845
		846	Register a callbackf ro execution when the client sends an extcmd packet.
		847
		848	If the callback returns something, it is sent back as if reply was being
		849	called.
		850
		851	=cut
549		852
550	sub register_extcmd {	853	sub register_extcmd {
551	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
552		855
553	my $caller = caller;	856	$EXTCMD{$name} = $cb;
554	#warn "registering extcmd '$name' to '$caller'";
555
556	$extcmd{$name} = [$cb, $caller];
557	}	857	}
558		858
559	sub register {	859	cf::player->attach (
560	my ($base, $pkg) = @_;	860	on_command => sub {
		861	my ($pl, $name, $params) = @_;
561		862
562	#TODO	863	my $cb = $COMMAND{$name}
563	}	864	or return;
		865
		866	for my $cmd (@$cb) {
		867	$cmd->[1]->($pl->ob, $params);
		868	}
		869
		870	cf::override;
		871	},
		872	on_extcmd => sub {
		873	my ($pl, $buf) = @_;
		874
		875	my $msg = eval { from_json $buf };
		876
		877	if (ref $msg) {
		878	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		879	if (my %reply = $cb->($pl, $msg)) {
		880	$pl->ext_reply ($msg->{msgid}, %reply);
		881	}
		882	}
		883	} else {
		884	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		885	}
		886
		887	cf::override;
		888	},
		889	);
564		890
565	sub load_extension {	891	sub load_extension {
566	my ($path) = @_;	892	my ($path) = @_;
567		893
568	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	894	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
569	my $base = $1;	895	my $base = $1;
570	my $pkg = $1;	896	my $pkg = $1;
571	$pkg =~ s/[^[:word:]]/_/g;	897	$pkg =~ s/[^[:word:]]/_/g;
572	$pkg = "ext::$pkg";	898	$pkg = "ext::$pkg";
573		899
574	warn "loading '$path' into '$pkg'\n";	900	warn "... loading '$path' into '$pkg'\n";
575		901
576	open my $fh, "<:utf8", $path	902	open my $fh, "<:utf8", $path
577	or die "$path: $!";	903	or die "$path: $!";
578		904
579	my $source =	905	my $source =
580	"package $pkg; use strict; use utf8;\n"	906	"package $pkg; use strict; use utf8;\n"
581	. "#line 1 \"$path\"\n{\n"	907	. "#line 1 \"$path\"\n{\n"
582	. (do { local $/; <$fh> })	908	. (do { local $/; <$fh> })
583	. "\n};\n1";	909	. "\n};\n1";
584		910
585	eval $source	911	unless (eval $source) {
586	or die "$path: $@";	912	my $msg = $@ ? "$path: $@\n"
587		913	: "extension disabled.\n";
588	push @exts, $pkg;	914	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
589	$ext_pkg{$base} = $pkg;	915	warn $@;
590		916	warn "mandatory extension failed to load, exiting.\n";
591	# no strict 'refs';	917	exit 1;
592	# @{"$pkg\::ISA"} = ext::;	918	}
593		919	die $@;
594	register $base, $pkg;
595	}
596
597	sub unload_extension {
598	my ($pkg) = @_;
599
600	warn "removing extension $pkg\n";
601
602	# remove hooks
603	#TODO
604	# for my $idx (0 .. $#PLUGIN_EVENT) {
605	# delete $hook[$idx]{$pkg};
606	# }	920	}
607		921
608	# remove commands	922	push @EXTS, $pkg;
609	for my $name (keys %command) {
610	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
611
612	if (@cb) {
613	$command{$name} = \@cb;
614	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
615	} else {
616	delete $command{$name};
617	delete $COMMAND{"$name\000"};
618	}
619	}
620
621	# remove extcmds
622	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
623	delete $extcmd{$name};
624	}
625
626	if (my $cb = $pkg->can ("unload")) {
627	eval {
628	$cb->($pkg);
629	1
630	} or warn "$pkg unloaded, but with errors: $@";
631	}
632
633	Symbol::delete_package $pkg;
634	}	923	}
635		924
636	sub load_extensions {	925	sub load_extensions {
637	my $LIBDIR = maps_directory "perl";
638
639	for my $ext (<$LIBDIR/*.ext>) {	926	for my $ext (<$LIBDIR/*.ext>) {
640	next unless -r $ext;	927	next unless -r $ext;
641	eval {	928	eval {
642	load_extension $ext;	929	load_extension $ext;
643	1	930	1
644	} or warn "$ext not loaded: $@";	931	} or warn "$ext not loaded: $@";
645	}	932	}
646	}	933	}
647		934
648	sub _perl_reload(&) {	935	#############################################################################
		936
		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) . "/playerdata"
		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	# rename old playerfiles to new ones
		992	#TODO: remove when no longer required
		993	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		994	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		995	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		996	aio_unlink +(playerdir $login) . "/$login.pl";
		997
		998	my $pl = load_pl path $login
		999	or return;
		1000	$cf::PLAYER{$login} = $pl
		1001	}
		1002	}
		1003	}
		1004
		1005	sub save($) {
		1006	my ($pl) = @_;
		1007
		1008	return if $pl->{deny_save};
		1009
		1010	my $path = path $pl;
		1011	my $guard = cf::lock_acquire "user_save:$path";
		1012
		1013	return if $pl->{deny_save};
		1014
		1015	aio_mkdir playerdir $pl, 0770;
		1016	$pl->{last_save} = $cf::RUNTIME;
		1017
		1018	$pl->save_pl ($path);
		1019	Coro::cede;
		1020	}
		1021
		1022	sub new($) {
		1023	my ($login) = @_;
		1024
		1025	my $self = create;
		1026
		1027	$self->ob->name ($login);
		1028	$self->{deny_save} = 1;
		1029
		1030	$cf::PLAYER{$login} = $self;
		1031
		1032	$self
		1033	}
		1034
		1035	=item $pl->quit_character
		1036
		1037	Nukes the player without looking back. If logged in, the connection will
		1038	be destroyed. May block for a long time.
		1039
		1040	=cut
		1041
		1042	sub quit_character {
		1043	my ($pl) = @_;
		1044
		1045	my $name = $pl->ob->name;
		1046
		1047	$pl->{deny_save} = 1;
		1048	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1049
		1050	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1051	$pl->deactivate;
		1052	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1053	$pl->ns->destroy if $pl->ns;
		1054
		1055	my $path = playerdir $pl;
		1056	my $temp = "$path~$cf::RUNTIME~deleting~";
		1057	aio_rename $path, $temp;
		1058	delete $cf::PLAYER{$pl->ob->name};
		1059	$pl->destroy;
		1060
		1061	my $prefix = qr<^~\Q$name\E/>;
		1062
		1063	# nuke player maps
		1064	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1065
		1066	IO::AIO::aio_rmtree $temp;
		1067	}
		1068
		1069	=item $pl->kick
		1070
		1071	Kicks a player out of the game. This destroys the connection.
		1072
		1073	=cut
		1074
		1075	sub kick {
		1076	my ($pl, $kicker) = @_;
		1077
		1078	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1079	$pl->killer ("kicked");
		1080	$pl->ns->destroy;
		1081	}
		1082
		1083	=item cf::player::list_logins
		1084
		1085	Returns am arrayref of all valid playernames in the system, can take a
		1086	while and may block, so not sync_job-capable, ever.
		1087
		1088	=cut
		1089
		1090	sub list_logins {
		1091	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1092	or return [];
		1093
		1094	my @logins;
		1095
		1096	for my $login (@$dirs) {
		1097	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1098	aio_read $fh, 0, 512, my $buf, 0 or next;
		1099	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1100
		1101	utf8::decode $login;
		1102	push @logins, $login;
		1103	}
		1104
		1105	\@logins
		1106	}
		1107
		1108	=item $player->maps
		1109
		1110	Returns an arrayref of map paths that are private for this
		1111	player. May block.
		1112
		1113	=cut
		1114
		1115	sub maps($) {
		1116	my ($pl) = @_;
		1117
		1118	$pl = ref $pl ? $pl->ob->name : $pl;
		1119
		1120	my $files = aio_readdir playerdir $pl
		1121	or return;
		1122
		1123	my @paths;
		1124
		1125	for (@$files) {
		1126	utf8::decode $_;
		1127	next if /\.(?:pl|pst)$/;
		1128	next unless /^$PATH_SEP/o;
		1129
		1130	push @paths, cf::map::normalise "~$pl/$_";
		1131	}
		1132
		1133	\@paths
		1134	}
		1135
		1136	=item $player->ext_reply ($msgid, %msg)
		1137
		1138	Sends an ext reply to the player.
		1139
		1140	=cut
		1141
		1142	sub ext_reply($$%) {
		1143	my ($self, $id, %msg) = @_;
		1144
		1145	$msg{msgid} = $id;
		1146
		1147	$self->send ("ext " . cf::to_json \%msg);
		1148	}
		1149
		1150	=item $player->ext_event ($type, %msg)
		1151
		1152	Sends an ext event to the client.
		1153
		1154	=cut
		1155
		1156	sub ext_event($$%) {
		1157	my ($self, $type, %msg) = @_;
		1158
		1159	$self->ns->ext_event ($type, %msg);
		1160	}
		1161
		1162	package cf;
		1163
		1164	=back
		1165
		1166
		1167	=head3 cf::map
		1168
		1169	=over 4
		1170
		1171	=cut
		1172
		1173	package cf::map;
		1174
		1175	use Fcntl;
		1176	use Coro::AIO;
		1177
		1178	use overload
		1179	'""' => \&as_string,
		1180	fallback => 1;
		1181
		1182	our $MAX_RESET = 3600;
		1183	our $DEFAULT_RESET = 3000;
		1184
		1185	sub generate_random_map {
		1186	my ($self, $rmp) = @_;
		1187	# mit "rum" bekleckern, nicht
		1188	$self->_create_random_map (
		1189	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1190	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1191	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1192	$rmp->{exit_on_final_map},
		1193	$rmp->{xsize}, $rmp->{ysize},
		1194	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1195	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1196	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1197	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1198	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1199	(cf::region::find $rmp->{region}), $rmp->{custom}
		1200	)
		1201	}
		1202
		1203	=item cf::map->register ($regex, $prio)
		1204
		1205	Register a handler for the map path matching the given regex at the
		1206	givne priority (higher is better, built-in handlers have priority 0, the
		1207	default).
		1208
		1209	=cut
		1210
		1211	sub register {
		1212	my (undef, $regex, $prio) = @_;
		1213	my $pkg = caller;
		1214
		1215	no strict;
		1216	push @{"$pkg\::ISA"}, __PACKAGE__;
		1217
		1218	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1219	}
		1220
		1221	# also paths starting with '/'
		1222	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1223
		1224	sub thawer_merge {
		1225	my ($self, $merge) = @_;
		1226
		1227	# we have to keep some variables in memory intact
		1228	local $self->{path};
		1229	local $self->{load_path};
		1230	local $self->{deny_save};
		1231	local $self->{deny_reset};
		1232
		1233	$self->SUPER::thawer_merge ($merge);
		1234	}
		1235
		1236	sub normalise {
		1237	my ($path, $base) = @_;
		1238
		1239	$path = "$path"; # make sure its a string
		1240
		1241	$path =~ s/\.map$//;
		1242
		1243	# map plan:
		1244	#
		1245	# /! non-realised random map exit (special hack!)
		1246	# {... are special paths that are not being touched
		1247	# ?xxx/... are special absolute paths
		1248	# ?random/... random maps
		1249	# /... normal maps
		1250	# ~user/... per-player map of a specific user
		1251
		1252	$path =~ s/$PATH_SEP/\//go;
		1253
		1254	# treat it as relative path if it starts with
		1255	# something that looks reasonable
		1256	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1257	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1258
		1259	$base =~ s{[^/]+/?$}{};
		1260	$path = "$base/$path";
		1261	}
		1262
		1263	for ($path) {
		1264	redo if s{//}{/};
		1265	redo if s{/\.?/}{/};
		1266	redo if s{/[^/]+/\.\./}{/};
		1267	}
		1268
		1269	$path
		1270	}
		1271
		1272	sub new_from_path {
		1273	my (undef, $path, $base) = @_;
		1274
		1275	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1276
		1277	$path = normalise $path, $base;
		1278
		1279	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1280	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1281	my $self = bless cf::map::new, $pkg;
		1282	$self->{path} = $path; $self->path ($path);
		1283	$self->init; # pass $1 etc.
		1284	return $self;
		1285	}
		1286	}
		1287
		1288	Carp::carp "unable to resolve path '$path' (base '$base').";
		1289	()
		1290	}
		1291
		1292	sub init {
		1293	my ($self) = @_;
		1294
		1295	$self
		1296	}
		1297
		1298	sub as_string {
		1299	my ($self) = @_;
		1300
		1301	"$self->{path}"
		1302	}
		1303
		1304	# the displayed name, this is a one way mapping
		1305	sub visible_name {
		1306	&as_string
		1307	}
		1308
		1309	# the original (read-only) location
		1310	sub load_path {
		1311	my ($self) = @_;
		1312
		1313	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1314	}
		1315
		1316	# the temporary/swap location
		1317	sub save_path {
		1318	my ($self) = @_;
		1319
		1320	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1321	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1322	}
		1323
		1324	# the unique path, undef == no special unique path
		1325	sub uniq_path {
		1326	my ($self) = @_;
		1327
		1328	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1329	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1330	}
		1331
		1332	# and all this just because we cannot iterate over
		1333	# all maps in C++...
		1334	sub change_all_map_light {
		1335	my ($change) = @_;
		1336
		1337	$_->change_map_light ($change)
		1338	for grep $_->outdoor, values %cf::MAP;
		1339	}
		1340
		1341	sub unlink_save {
		1342	my ($self) = @_;
		1343
		1344	utf8::encode (my $save = $self->save_path);
		1345	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1346	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1347	}
		1348
		1349	sub load_header_from($) {
		1350	my ($self, $path) = @_;
		1351
		1352	utf8::encode $path;
		1353	#aio_open $path, O_RDONLY, 0
		1354	# or return;
		1355
		1356	$self->_load_header ($path)
		1357	or return;
		1358
		1359	$self->{load_path} = $path;
		1360
		1361	1
		1362	}
		1363
		1364	sub load_header_orig {
		1365	my ($self) = @_;
		1366
		1367	$self->load_header_from ($self->load_path)
		1368	}
		1369
		1370	sub load_header_temp {
		1371	my ($self) = @_;
		1372
		1373	$self->load_header_from ($self->save_path)
		1374	}
		1375
		1376	sub prepare_temp {
		1377	my ($self) = @_;
		1378
		1379	$self->last_access ((delete $self->{last_access})
		1380	|| $cf::RUNTIME); #d#
		1381	# safety
		1382	$self->{instantiate_time} = $cf::RUNTIME
		1383	if $self->{instantiate_time} > $cf::RUNTIME;
		1384	}
		1385
		1386	sub prepare_orig {
		1387	my ($self) = @_;
		1388
		1389	$self->{load_original} = 1;
		1390	$self->{instantiate_time} = $cf::RUNTIME;
		1391	$self->last_access ($cf::RUNTIME);
		1392	$self->instantiate;
		1393	}
		1394
		1395	sub load_header {
		1396	my ($self) = @_;
		1397
		1398	if ($self->load_header_temp) {
		1399	$self->prepare_temp;
		1400	} else {
		1401	$self->load_header_orig
		1402	or return;
		1403	$self->prepare_orig;
		1404	}
		1405
		1406	1
		1407	}
		1408
		1409	sub find;
		1410	sub find {
		1411	my ($path, $origin) = @_;
		1412
		1413	$path = normalise $path, $origin && $origin->path;
		1414
		1415	cf::lock_wait "map_find:$path";
		1416
		1417	$cf::MAP{$path} || do {
		1418	my $guard = cf::lock_acquire "map_find:$path";
		1419	my $map = new_from_path cf::map $path
		1420	or return;
		1421
		1422	$map->{last_save} = $cf::RUNTIME;
		1423
		1424	$map->load_header
		1425	or return;
		1426
		1427	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1428	# doing this can freeze the server in a sync job, obviously
		1429	#$cf::WAIT_FOR_TICK->wait;
		1430	$map->reset;
		1431	undef $guard;
		1432	return find $path;
		1433	}
		1434
		1435	$cf::MAP{$path} = $map
		1436	}
		1437	}
		1438
		1439	sub pre_load { }
		1440	sub post_load { }
		1441
		1442	sub load {
		1443	my ($self) = @_;
		1444
		1445	local $self->{deny_reset} = 1; # loading can take a long time
		1446
		1447	my $path = $self->{path};
		1448	my $guard = cf::lock_acquire "map_load:$path";
		1449
		1450	return if $self->in_memory != cf::MAP_SWAPPED;
		1451
		1452	$self->in_memory (cf::MAP_LOADING);
		1453
		1454	$self->alloc;
		1455
		1456	$self->pre_load;
		1457
		1458	$self->_load_objects ($self->{load_path}, 1)
		1459	or return;
		1460
		1461	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1462	if delete $self->{load_original};
		1463
		1464	if (my $uniq = $self->uniq_path) {
		1465	utf8::encode $uniq;
		1466	if (aio_open $uniq, O_RDONLY, 0) {
		1467	$self->clear_unique_items;
		1468	$self->_load_objects ($uniq, 0);
		1469	}
		1470	}
		1471
		1472	Coro::cede;
		1473
		1474	# now do the right thing for maps
		1475	$self->link_multipart_objects;
		1476
		1477	unless ($self->{deny_activate}) {
		1478	$self->decay_objects;
		1479	$self->fix_auto_apply;
		1480	$self->update_buttons;
		1481	Coro::cede;
		1482	$self->set_darkness_map;
		1483	$self->difficulty ($self->estimate_difficulty)
		1484	unless $self->difficulty;
		1485	Coro::cede;
		1486	$self->activate;
		1487	}
		1488
		1489	$self->post_load;
		1490
		1491	$self->in_memory (cf::MAP_IN_MEMORY);
		1492	}
		1493
		1494	sub customise_for {
		1495	my ($self, $ob) = @_;
		1496
		1497	return find "~" . $ob->name . "/" . $self->{path}
		1498	if $self->per_player;
		1499
		1500	$self
		1501	}
		1502
		1503	# find and load all maps in the 3x3 area around a map
		1504	sub load_diag {
649	my ($msg) = @_;	1505	my ($map) = @_;
650		1506
651	$msg->("reloading...");	1507	my @diag; # diagonal neighbours
652		1508
653	eval {	1509	for (0 .. 3) {
654	# 1. cancel all watchers	1510	my $neigh = $map->tile_path ($_)
655	$_->cancel for Event::all_watchers;	1511	or next;
		1512	$neigh = find $neigh, $map
		1513	or next;
		1514	$neigh->load;
656		1515
657	# 2. unload all extensions	1516	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
658	for (@exts) {	1517	[$neigh->tile_path (($_ + 1) % 4), $neigh];
659	$msg->("unloading <$_>");	1518	}
660	unload_extension $_;
661	}
662		1519
663	# 3. unload all modules loaded from $LIBDIR	1520	for (@diag) {
664	while (my ($k, $v) = each %INC) {	1521	my $neigh = find @$_
665	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1522	or next;
		1523	$neigh->load;
		1524	}
		1525	}
666		1526
667	$msg->("removing <$k>");	1527	sub find_sync {
668	delete $INC{$k};	1528	my ($path, $origin) = @_;
669		1529
670	$k =~ s/\.pm$//;	1530	cf::sync_job { find $path, $origin }
671	$k =~ s/\//::/g;	1531	}
672		1532
673	if (my $cb = $k->can ("unload_module")) {	1533	sub do_load_sync {
674	$cb->();	1534	my ($map) = @_;
		1535
		1536	cf::sync_job { $map->load };
		1537	}
		1538
		1539	our %MAP_PREFETCH;
		1540	our $MAP_PREFETCHER = undef;
		1541
		1542	sub find_async {
		1543	my ($path, $origin) = @_;
		1544
		1545	$path = normalise $path, $origin && $origin->{path};
		1546
		1547	if (my $map = $cf::MAP{$path}) {
		1548	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1549	}
		1550
		1551	undef $MAP_PREFETCH{$path};
		1552	$MAP_PREFETCHER ||= cf::async {
		1553	while (%MAP_PREFETCH) {
		1554	for my $path (keys %MAP_PREFETCH) {
		1555	my $map = find $path
		1556	or next;
		1557	$map->load;
		1558
		1559	delete $MAP_PREFETCH{$path};
675	}	1560	}
676
677	Symbol::delete_package $k;
678	}
679
680	# 4. get rid of safe::, as good as possible
681	Symbol::delete_package "safe::$_"
682	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
683
684	# 5. remove register_script_function callbacks
685	# TODO
686		1561	}
687	# 6. unload cf.pm "a bit"	1562	undef $MAP_PREFETCHER;
688	delete $INC{"cf.pm"};
689
690	# don't, removes xs symbols, too,
691	# and global variables created in xs
692	#Symbol::delete_package __PACKAGE__;
693
694	# 7. reload cf.pm
695	$msg->("reloading cf.pm");
696	require cf;
697
698	$msg->("load extensions");
699	cf::load_extensions;
700
701	$msg->("reattach");
702	_global_reattach;
703	};	1563	};
704	$msg->($@) if $@;	1564	$MAP_PREFETCHER->prio (6);
705		1565
706	$msg->("reloaded");	1566	()
707	};	1567	}
708		1568
709	sub perl_reload() {	1569	sub save {
710	_perl_reload {	1570	my ($self) = @_;
711	warn $_[0];	1571
712	print "$_[0]\n";	1572	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1573
		1574	$self->{last_save} = $cf::RUNTIME;
		1575
		1576	return unless $self->dirty;
		1577
		1578	my $save = $self->save_path; utf8::encode $save;
		1579	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1580
		1581	$self->{load_path} = $save;
		1582
		1583	return if $self->{deny_save};
		1584
		1585	local $self->{last_access} = $self->last_access;#d#
		1586
		1587	cf::async {
		1588	$_->contr->save for $self->players;
713	};	1589	};
714	}
715		1590
716	register_command "perl-reload", 0, sub {	1591	if ($uniq) {
717	my ($who, $arg) = @_;	1592	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
718		1593	$self->_save_objects ($uniq, cf::IO_UNIQUES);
719	if ($who->flag (FLAG_WIZ)) {
720	_perl_reload {
721	warn $_[0];
722	$who->message ($_[0]);
723	};
724	}
725	};
726
727	#############################################################################
728	# extcmd framework, basically convert ext <msg>
729	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
730
731	attach_to_players
732	on_extcmd => sub {
733	my ($pl, $buf) = @_;
734
735	my $msg = eval { from_json $buf };
736
737	if (ref $msg) {
738	if (my $cb = $extcmd{$msg->{msgtype}}) {
739	if (my %reply = $cb->[0]->($pl, $msg)) {
740	$pl->ext_reply ($msg->{msgid}, %reply);
741	}
742	}
743	} else {	1594	} else {
744	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1595	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
745	}
746
747	cf::override;
748	},	1596	}
749	;	1597	}
750		1598
751	#############################################################################	1599	sub swap_out {
752	# load/save/clean perl data associated with a map
753
754	*cf::mapsupport::on_clean = sub {
755	my ($map) = @_;	1600	my ($self) = @_;
756		1601
757	my $path = $map->tmpname;	1602	# save first because save cedes
758	defined $path or return;	1603	$self->save;
759		1604
760	unlink "$path.pst";	1605	my $lock = cf::lock_acquire "map_data:" . $self->path;
761	};
762		1606
763	attach_to_maps prio => -10000, package => cf::mapsupport::;	1607	return if $self->players;
		1608	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1609	return if $self->{deny_save};
764		1610
765	#############################################################################	1611	$self->clear;
766	# load/save perl data associated with player->ob objects	1612	$self->in_memory (cf::MAP_SWAPPED);
767
768	sub all_objects(@) {
769	@_, map all_objects ($_->inv), @_
770	}	1613	}
771		1614
772	# TODO: compatibility cruft, remove when no longer needed	1615	sub reset_at {
773	attach_to_players	1616	my ($self) = @_;
774	on_load => sub {
775	my ($pl, $path) = @_;
776		1617
777	for my $o (all_objects $pl->ob) {	1618	# TODO: safety, remove and allow resettable per-player maps
778	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1619	return 1e99 if $self->isa ("ext::map_per_player");#d#
779	$o->set_ob_key_value ("_perl_data");	1620	return 1e99 if $self->{deny_reset};
780		1621
781	%$o = %{ Storable::thaw pack "H*", $value };	1622	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
782	}	1623	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
783	}	1624
		1625	$time + $to
		1626	}
		1627
		1628	sub should_reset {
		1629	my ($self) = @_;
		1630
		1631	$self->reset_at <= $cf::RUNTIME
		1632	}
		1633
		1634	sub reset {
		1635	my ($self) = @_;
		1636
		1637	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1638
		1639	return if $self->players;
		1640	return if $self->isa ("ext::map_per_player");#d#
		1641
		1642	warn "resetting map ", $self->path;#d#
		1643
		1644	$self->in_memory (cf::MAP_SWAPPED);
		1645
		1646	# need to save uniques path
		1647	unless ($self->{deny_save}) {
		1648	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1649
		1650	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1651	if $uniq;
784	},	1652	}
785	;
786		1653
787	#############################################################################	1654	delete $cf::MAP{$self->path};
788	# core extensions - in perl
789		1655
790	=item cf::player::exists $login	1656	$self->clear;
791		1657
792	Returns true when the given account exists.	1658	$_->clear_links_to ($self) for values %cf::MAP;
793		1659
794	=cut	1660	$self->unlink_save;
795		1661	$self->destroy;
796	sub cf::player::exists($) {
797	cf::player::find $_[0]
798	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
799	}	1662	}
800		1663
		1664	my $nuke_counter = "aaaa";
		1665
		1666	sub nuke {
		1667	my ($self) = @_;
		1668
		1669	delete $cf::MAP{$self->path};
		1670
		1671	$self->unlink_save;
		1672
		1673	bless $self, "cf::map";
		1674	delete $self->{deny_reset};
		1675	$self->{deny_save} = 1;
		1676	$self->reset_timeout (1);
		1677	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1678
		1679	$cf::MAP{$self->path} = $self;
		1680
		1681	$self->reset; # polite request, might not happen
		1682	}
		1683
		1684	=item cf::map::unique_maps
		1685
		1686	Returns an arrayref of paths of all shared maps that have
		1687	instantiated unique items. May block.
		1688
		1689	=cut
		1690
		1691	sub unique_maps() {
		1692	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1693	or return;
		1694
		1695	my @paths;
		1696
		1697	for (@$files) {
		1698	utf8::decode $_;
		1699	next if /\.pst$/;
		1700	next unless /^$PATH_SEP/o;
		1701
		1702	push @paths, cf::map::normalise $_;
		1703	}
		1704
		1705	\@paths
		1706	}
		1707
		1708	package cf;
		1709
		1710	=back
		1711
		1712	=head3 cf::object
		1713
		1714	=cut
		1715
		1716	package cf::object;
		1717
		1718	=over 4
		1719
		1720	=item $ob->inv_recursive
		1721
		1722	Returns the inventory of the object _and_ their inventories, recursively.
		1723
		1724	=cut
		1725
		1726	sub inv_recursive_;
		1727	sub inv_recursive_ {
		1728	map { $_, inv_recursive_ $_->inv } @_
		1729	}
		1730
		1731	sub inv_recursive {
		1732	inv_recursive_ inv $_[0]
		1733	}
		1734
		1735	package cf;
		1736
		1737	=back
		1738
		1739	=head3 cf::object::player
		1740
		1741	=over 4
		1742
801	=item $player->reply ($npc, $msg[, $flags])	1743	=item $player_object->reply ($npc, $msg[, $flags])
802		1744
803	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1745	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
804	can be C<undef>. Does the right thing when the player is currently in a	1746	can be C<undef>. Does the right thing when the player is currently in a
805	dialogue with the given NPC character.	1747	dialogue with the given NPC character.
806		1748
807	=cut	1749	=cut
808		1750
809	# rough implementation of a future "reply" method that works	1751	# rough implementation of a future "reply" method that works
810	# with dialog boxes.	1752	# with dialog boxes.
		1753	#TODO: the first argument must go, split into a $npc->reply_to ( method
811	sub cf::object::player::reply($$$;$) {	1754	sub cf::object::player::reply($$$;$) {
812	my ($self, $npc, $msg, $flags) = @_;	1755	my ($self, $npc, $msg, $flags) = @_;
813		1756
814	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1757	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
815		1758
…		…
819	$msg = $npc->name . " says: $msg" if $npc;	1762	$msg = $npc->name . " says: $msg" if $npc;
820	$self->message ($msg, $flags);	1763	$self->message ($msg, $flags);
821	}	1764	}
822	}	1765	}
823		1766
824	=item $player->ext_reply ($msgid, $msgtype, %msg)	1767	=item $player_object->may ("access")
825		1768
826	Sends an ext reply to the player.	1769	Returns wether the given player is authorized to access resource "access"
		1770	(e.g. "command_wizcast").
827		1771
828	=cut	1772	=cut
829		1773
830	sub cf::player::ext_reply($$$%) {	1774	sub cf::object::player::may {
		1775	my ($self, $access) = @_;
		1776
		1777	$self->flag (cf::FLAG_WIZ) ||
		1778	(ref $cf::CFG{"may_$access"}
		1779	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1780	: $cf::CFG{"may_$access"})
		1781	}
		1782
		1783	=item $player_object->enter_link
		1784
		1785	Freezes the player and moves him/her to a special map (C<{link}>).
		1786
		1787	The player should be reasonably safe there for short amounts of time. You
		1788	I<MUST> call C<leave_link> as soon as possible, though.
		1789
		1790	Will never block.
		1791
		1792	=item $player_object->leave_link ($map, $x, $y)
		1793
		1794	Moves the player out of the special C<{link}> map onto the specified
		1795	map. If the map is not valid (or omitted), the player will be moved back
		1796	to the location he/she was before the call to C<enter_link>, or, if that
		1797	fails, to the emergency map position.
		1798
		1799	Might block.
		1800
		1801	=cut
		1802
		1803	sub link_map {
		1804	unless ($LINK_MAP) {
		1805	$LINK_MAP = cf::map::find "{link}"
		1806	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1807	$LINK_MAP->load;
		1808	}
		1809
		1810	$LINK_MAP
		1811	}
		1812
		1813	sub cf::object::player::enter_link {
		1814	my ($self) = @_;
		1815
		1816	$self->deactivate_recursive;
		1817
		1818	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1819
		1820	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1821	if $self->map;
		1822
		1823	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1824	}
		1825
		1826	sub cf::object::player::leave_link {
		1827	my ($self, $map, $x, $y) = @_;
		1828
		1829	my $link_pos = delete $self->{_link_pos};
		1830
		1831	unless ($map) {
		1832	# restore original map position
		1833	($map, $x, $y) = @{ $link_pos || [] };
		1834	$map = cf::map::find $map;
		1835
		1836	unless ($map) {
		1837	($map, $x, $y) = @$EMERGENCY_POSITION;
		1838	$map = cf::map::find $map
		1839	or die "FATAL: cannot load emergency map\n";
		1840	}
		1841	}
		1842
		1843	($x, $y) = (-1, -1)
		1844	unless (defined $x) && (defined $y);
		1845
		1846	# use -1 or undef as default coordinates, not 0, 0
		1847	($x, $y) = ($map->enter_x, $map->enter_y)
		1848	if $x <=0 && $y <= 0;
		1849
		1850	$map->load;
		1851	$map->load_diag;
		1852
		1853	return unless $self->contr->active;
		1854	$self->activate_recursive;
		1855
		1856	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1857	$self->enter_map ($map, $x, $y);
		1858	}
		1859
		1860	cf::player->attach (
		1861	on_logout => sub {
		1862	my ($pl) = @_;
		1863
		1864	# abort map switching before logout
		1865	if ($pl->ob->{_link_pos}) {
		1866	cf::sync_job {
		1867	$pl->ob->leave_link
		1868	};
		1869	}
		1870	},
		1871	on_login => sub {
		1872	my ($pl) = @_;
		1873
		1874	# try to abort aborted map switching on player login :)
		1875	# should happen only on crashes
		1876	if ($pl->ob->{_link_pos}) {
		1877	$pl->ob->enter_link;
		1878	(async {
		1879	$pl->ob->reply (undef,
		1880	"There was an internal problem at your last logout, "
		1881	. "the server will try to bring you to your intended destination in a second.",
		1882	cf::NDI_RED);
		1883	# we need this sleep as the login has a concurrent enter_exit running
		1884	# and this sleep increases chances of the player not ending up in scorn
		1885	Coro::Timer::sleep 1;
		1886	$pl->ob->leave_link;
		1887	})->prio (2);
		1888	}
		1889	},
		1890	);
		1891
		1892	=item $player_object->goto ($path, $x, $y)
		1893
		1894	=cut
		1895
		1896	sub cf::object::player::goto {
		1897	my ($self, $path, $x, $y) = @_;
		1898
		1899	$self->enter_link;
		1900
		1901	(async {
		1902	my $map = eval {
		1903	my $map = cf::map::find $path;
		1904	$map = $map->customise_for ($self) if $map;
		1905	$map
		1906	} or
		1907	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1908
		1909	$self->leave_link ($map, $x, $y);
		1910	})->prio (1);
		1911	}
		1912
		1913	=item $player_object->enter_exit ($exit_object)
		1914
		1915	=cut
		1916
		1917	sub parse_random_map_params {
		1918	my ($spec) = @_;
		1919
		1920	my $rmp = { # defaults
		1921	xsize => (cf::rndm 15, 40),
		1922	ysize => (cf::rndm 15, 40),
		1923	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1924	#layout => string,
		1925	};
		1926
		1927	for (split /\n/, $spec) {
		1928	my ($k, $v) = split /\s+/, $_, 2;
		1929
		1930	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1931	}
		1932
		1933	$rmp
		1934	}
		1935
		1936	sub prepare_random_map {
		1937	my ($exit) = @_;
		1938
		1939	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1940
		1941	# all this does is basically replace the /! path by
		1942	# a new random map path (?random/...) with a seed
		1943	# that depends on the exit object
		1944
		1945	my $rmp = parse_random_map_params $exit->msg;
		1946
		1947	if ($exit->map) {
		1948	$rmp->{region} = $exit->region->name;
		1949	$rmp->{origin_map} = $exit->map->path;
		1950	$rmp->{origin_x} = $exit->x;
		1951	$rmp->{origin_y} = $exit->y;
		1952	}
		1953
		1954	$rmp->{random_seed} ||= $exit->random_seed;
		1955
		1956	my $data = cf::to_json $rmp;
		1957	my $md5 = Digest::MD5::md5_hex $data;
		1958	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1959
		1960	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1961	aio_write $fh, 0, (length $data), $data, 0;
		1962	undef $fh;
		1963	aio_rename "$meta~", $meta;
		1964
		1965	$exit->slaying ("?random/$md5");
		1966	$exit->msg (undef);
		1967	}
		1968	}
		1969
		1970	sub cf::object::player::enter_exit {
		1971	my ($self, $exit) = @_;
		1972
		1973	return unless $self->type == cf::PLAYER;
		1974
		1975	if ($exit->slaying eq "/!") {
		1976	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1977	# the problem is that $exit might not survive long enough
		1978	# so it needs to be done right now, right here
		1979	cf::sync_job { prepare_random_map $exit };
		1980	}
		1981
		1982	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1983	my $hp = $exit->stats->hp;
		1984	my $sp = $exit->stats->sp;
		1985
		1986	$self->enter_link;
		1987
		1988	(async {
		1989	$self->deactivate_recursive; # just to be sure
		1990	unless (eval {
		1991	$self->goto ($slaying, $hp, $sp);
		1992
		1993	1;
		1994	}) {
		1995	$self->message ("Something went wrong deep within the crossfire server. "
		1996	. "I'll try to bring you back to the map you were before. "
		1997	. "Please report this to the dungeon master!",
		1998	cf::NDI_UNIQUE | cf::NDI_RED);
		1999
		2000	warn "ERROR in enter_exit: $@";
		2001	$self->leave_link;
		2002	}
		2003	})->prio (1);
		2004	}
		2005
		2006	=head3 cf::client
		2007
		2008	=over 4
		2009
		2010	=item $client->send_drawinfo ($text, $flags)
		2011
		2012	Sends a drawinfo packet to the client. Circumvents output buffering so
		2013	should not be used under normal circumstances.
		2014
		2015	=cut
		2016
		2017	sub cf::client::send_drawinfo {
		2018	my ($self, $text, $flags) = @_;
		2019
		2020	utf8::encode $text;
		2021	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2022	}
		2023
		2024	=item $client->ext_event ($type, %msg)
		2025
		2026	Sends an exti event to the client.
		2027
		2028	=cut
		2029
		2030	sub cf::client::ext_event($$%) {
831	my ($self, $id, %msg) = @_;	2031	my ($self, $type, %msg) = @_;
832		2032
833	$msg{msgid} = $id;	2033	$msg{msgtype} = "event_$type";
834
835	$self->send ("ext " . to_json \%msg);	2034	$self->send_packet ("ext " . cf::to_json \%msg);
836	}	2035	}
837		2036
838	#############################################################################	2037	=item $success = $client->query ($flags, "text", \&cb)
839	# map scripting support	2038
		2039	Queues a query to the client, calling the given callback with
		2040	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2041	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2042
		2043	Queries can fail, so check the return code. Or don't, as queries will become
		2044	reliable at some point in the future.
		2045
		2046	=cut
		2047
		2048	sub cf::client::query {
		2049	my ($self, $flags, $text, $cb) = @_;
		2050
		2051	return unless $self->state == ST_PLAYING
		2052	|| $self->state == ST_SETUP
		2053	|| $self->state == ST_CUSTOM;
		2054
		2055	$self->state (ST_CUSTOM);
		2056
		2057	utf8::encode $text;
		2058	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2059
		2060	$self->send_packet ($self->{query_queue}[0][0])
		2061	if @{ $self->{query_queue} } == 1;
		2062	}
		2063
		2064	cf::client->attach (
		2065	on_reply => sub {
		2066	my ($ns, $msg) = @_;
		2067
		2068	# this weird shuffling is so that direct followup queries
		2069	# get handled first
		2070	my $queue = delete $ns->{query_queue}
		2071	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2072
		2073	(shift @$queue)->[1]->($msg);
		2074	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2075
		2076	push @{ $ns->{query_queue} }, @$queue;
		2077
		2078	if (@{ $ns->{query_queue} } == @$queue) {
		2079	if (@$queue) {
		2080	$ns->send_packet ($ns->{query_queue}[0][0]);
		2081	} else {
		2082	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2083	}
		2084	}
		2085	},
		2086	);
		2087
		2088	=item $client->async (\&cb)
		2089
		2090	Create a new coroutine, running the specified callback. The coroutine will
		2091	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2092	or loss of connection).
		2093
		2094	=cut
		2095
		2096	sub cf::client::async {
		2097	my ($self, $cb) = @_;
		2098
		2099	my $coro = &Coro::async ($cb);
		2100
		2101	$coro->on_destroy (sub {
		2102	delete $self->{_coro}{$coro+0};
		2103	});
		2104
		2105	$self->{_coro}{$coro+0} = $coro;
		2106
		2107	$coro
		2108	}
		2109
		2110	cf::client->attach (
		2111	on_destroy => sub {
		2112	my ($ns) = @_;
		2113
		2114	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2115	},
		2116	);
		2117
		2118	=back
		2119
		2120
		2121	=head2 SAFE SCRIPTING
		2122
		2123	Functions that provide a safe environment to compile and execute
		2124	snippets of perl code without them endangering the safety of the server
		2125	itself. Looping constructs, I/O operators and other built-in functionality
		2126	is not available in the safe scripting environment, and the number of
		2127	functions and methods that can be called is greatly reduced.
		2128
		2129	=cut
840		2130
841	our $safe = new Safe "safe";	2131	our $safe = new Safe "safe";
842	our $safe_hole = new Safe::Hole;	2132	our $safe_hole = new Safe::Hole;
843		2133
844	$SIG{FPE} = 'IGNORE';	2134	$SIG{FPE} = 'IGNORE';
845		2135
846	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2136	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
847		2137
848	# here we export the classes and methods available to script code	2138	# here we export the classes and methods available to script code
849		2139
		2140	=pod
		2141
		2142	The following functions and methods are available within a safe environment:
		2143
		2144	cf::object contr pay_amount pay_player map
		2145	cf::object::player player
		2146	cf::player peaceful
		2147	cf::map trigger
		2148
		2149	=cut
		2150
850	for (	2151	for (
851	["cf::object" => qw(contr pay_amount pay_player)],	2152	["cf::object" => qw(contr pay_amount pay_player map)],
852	["cf::object::player" => qw(player)],	2153	["cf::object::player" => qw(player)],
853	["cf::player" => qw(peaceful)],	2154	["cf::player" => qw(peaceful)],
		2155	["cf::map" => qw(trigger)],
854	) {	2156	) {
855	no strict 'refs';	2157	no strict 'refs';
856	my ($pkg, @funs) = @$_;	2158	my ($pkg, @funs) = @$_;
857	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2159	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
858	for @funs;	2160	for @funs;
859	}	2161	}
		2162
		2163	=over 4
		2164
		2165	=item @retval = safe_eval $code, [var => value, ...]
		2166
		2167	Compiled and executes the given perl code snippet. additional var/value
		2168	pairs result in temporary local (my) scalar variables of the given name
		2169	that are available in the code snippet. Example:
		2170
		2171	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2172
		2173	=cut
860		2174
861	sub safe_eval($;@) {	2175	sub safe_eval($;@) {
862	my ($code, %vars) = @_;	2176	my ($code, %vars) = @_;
863		2177
864	my $qcode = $code;	2178	my $qcode = $code;
…		…
887	}	2201	}
888		2202
889	wantarray ? @res : $res[0]	2203	wantarray ? @res : $res[0]
890	}	2204	}
891		2205
		2206	=item cf::register_script_function $function => $cb
		2207
		2208	Register a function that can be called from within map/npc scripts. The
		2209	function should be reasonably secure and should be put into a package name
		2210	like the extension.
		2211
		2212	Example: register a function that gets called whenever a map script calls
		2213	C<rent::overview>, as used by the C<rent> extension.
		2214
		2215	cf::register_script_function "rent::overview" => sub {
		2216	...
		2217	};
		2218
		2219	=cut
		2220
892	sub register_script_function {	2221	sub register_script_function {
893	my ($fun, $cb) = @_;	2222	my ($fun, $cb) = @_;
894		2223
895	no strict 'refs';	2224	no strict 'refs';
896	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2225	*{"safe::$fun"} = $safe_hole->wrap ($cb);
897	}	2226	}
898		2227
		2228	=back
		2229
		2230	=cut
		2231
899	#############################################################################	2232	#############################################################################
900	# the server's main()	2233
		2234	=head2 EXTENSION DATABASE SUPPORT
		2235
		2236	Crossfire maintains a very simple database for extension use. It can
		2237	currently store anything that can be serialised using Storable, which
		2238	excludes objects.
		2239
		2240	The parameter C<$family> should best start with the name of the extension
		2241	using it, it should be unique.
		2242
		2243	=over 4
		2244
		2245	=item $value = cf::db_get $family => $key
		2246
		2247	Returns a single value from the database.
		2248
		2249	=item cf::db_put $family => $key => $value
		2250
		2251	Stores the given C<$value> in the family.
		2252
		2253	=cut
		2254
		2255	our $DB;
		2256
		2257	sub db_init {
		2258	unless ($DB) {
		2259	$DB = BDB::db_create $DB_ENV;
		2260
		2261	cf::sync_job {
		2262	eval {
		2263	$DB->set_flags (BDB::CHKSUM);
		2264
		2265	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2266	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2267	cf::cleanup "db_open(db): $!" if $!;
		2268	};
		2269	cf::cleanup "db_open(db): $@" if $@;
		2270	};
		2271
		2272	my $path = cf::localdir . "/database.pst";
		2273	if (stat $path) {
		2274	cf::sync_job {
		2275	my $pst = Storable::retrieve $path;
		2276
		2277	cf::db_put (board => data => $pst->{board});
		2278	cf::db_put (guildrules => data => $pst->{guildrules});
		2279	cf::db_put (rent => balance => $pst->{rent}{balance});
		2280	BDB::db_env_txn_checkpoint $DB_ENV;
		2281
		2282	unlink $path;
		2283	};
		2284	}
		2285	}
		2286	}
		2287
		2288	sub db_get($$) {
		2289	my $key = "$_[0]/$_[1]";
		2290
		2291	cf::sync_job {
		2292	BDB::db_get $DB, undef, $key, my $data;
		2293
		2294	$! ? ()
		2295	: Compress::LZF::sthaw $data
		2296	}
		2297	}
		2298
		2299	sub db_put($$$) {
		2300	BDB::dbreq_pri 4;
		2301	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2302	}
		2303
		2304	#############################################################################
		2305	# the server's init and main functions
		2306
		2307	sub load_facedata {
		2308	my $path = sprintf "%s/facedata", cf::datadir;
		2309
		2310	warn "loading facedata from $path\n";
		2311
		2312	my $facedata;
		2313	0 < aio_load $path, $facedata
		2314	or die "$path: $!";
		2315
		2316	Coro::cede;
		2317	$facedata = Storable::thaw $facedata;
		2318	Coro::cede;
		2319
		2320	$facedata->{version} == 2
		2321	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2322
		2323	{
		2324	my $faces = $facedata->{faceinfo};
		2325
		2326	while (my ($face, $info) = each %$faces) {
		2327	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2328	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2329	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2330	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2331	Coro::cede;
		2332	}
		2333
		2334	while (my ($face, $info) = each %$faces) {
		2335	next unless $info->{smooth};
		2336	my $idx = cf::face::find $face
		2337	or next;
		2338	if (my $smooth = cf::face::find $info->{smooth}) {
		2339	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2340	} else {
		2341	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2342	}
		2343	Coro::cede;
		2344	}
		2345	}
		2346
		2347	{
		2348	my $anims = $facedata->{animinfo};
		2349
		2350	while (my ($anim, $info) = each %$anims) {
		2351	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2352	Coro::cede;
		2353	}
		2354
		2355	cf::anim::invalidate_all; # d'oh
		2356	}
		2357
		2358	1
		2359	}
		2360
		2361	sub reload_resources {
		2362	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2363	or die "unable to load regions file\n";#d#
		2364	load_facedata
		2365	or die "unable to load facedata\n";#d#
		2366	}
		2367
		2368	sub init {
		2369	reload_resources;
		2370	}
		2371
		2372	sub cfg_load {
		2373	open my $fh, "<:utf8", cf::confdir . "/config"
		2374	or return;
		2375
		2376	local $/;
		2377	*CFG = YAML::Syck::Load <$fh>;
		2378
		2379	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2380
		2381	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2382	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2383
		2384	if (exists $CFG{mlockall}) {
		2385	eval {
		2386	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2387	and die "WARNING: m(un)lockall failed: $!\n";
		2388	};
		2389	warn $@ if $@;
		2390	}
		2391	}
901		2392
902	sub main {	2393	sub main {
		2394	# we must not ever block the main coroutine
		2395	local $Coro::idle = sub {
		2396	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2397	(async {
		2398	Event::one_event;
		2399	})->prio (Coro::PRIO_MAX);
		2400	};
		2401
		2402	cfg_load;
		2403	db_init;
903	load_extensions;	2404	load_extensions;
		2405
		2406	$TICK_WATCHER->start;
904	Event::loop;	2407	Event::loop;
905	}	2408	}
906		2409
907	#############################################################################	2410	#############################################################################
908	# initialisation	2411	# initialisation and cleanup
909		2412
910	register "<global>", __PACKAGE__;	2413	# install some emergency cleanup handlers
		2414	BEGIN {
		2415	for my $signal (qw(INT HUP TERM)) {
		2416	Event->signal (
		2417	reentrant => 0,
		2418	data => WF_AUTOCANCEL,
		2419	signal => $signal,
		2420	prio => 0,
		2421	cb => sub {
		2422	cf::cleanup "SIG$signal";
		2423	},
		2424	);
		2425	}
		2426	}
		2427
		2428	sub emergency_save() {
		2429	my $freeze_guard = cf::freeze_mainloop;
		2430
		2431	warn "enter emergency perl save\n";
		2432
		2433	cf::sync_job {
		2434	# use a peculiar iteration method to avoid tripping on perl
		2435	# refcount bugs in for. also avoids problems with players
		2436	# and maps saved/destroyed asynchronously.
		2437	warn "begin emergency player save\n";
		2438	for my $login (keys %cf::PLAYER) {
		2439	my $pl = $cf::PLAYER{$login} or next;
		2440	$pl->valid or next;
		2441	$pl->save;
		2442	}
		2443	warn "end emergency player save\n";
		2444
		2445	warn "begin emergency map save\n";
		2446	for my $path (keys %cf::MAP) {
		2447	my $map = $cf::MAP{$path} or next;
		2448	$map->valid or next;
		2449	$map->save;
		2450	}
		2451	warn "end emergency map save\n";
		2452
		2453	warn "begin emergency database checkpoint\n";
		2454	BDB::db_env_txn_checkpoint $DB_ENV;
		2455	warn "end emergency database checkpoint\n";
		2456	};
		2457
		2458	warn "leave emergency perl save\n";
		2459	}
		2460
		2461	sub post_cleanup {
		2462	my ($make_core) = @_;
		2463
		2464	warn Carp::longmess "post_cleanup backtrace"
		2465	if $make_core;
		2466	}
		2467
		2468	sub reload() {
		2469	# can/must only be called in main
		2470	if ($Coro::current != $Coro::main) {
		2471	warn "can only reload from main coroutine";
		2472	return;
		2473	}
		2474
		2475	warn "reloading...";
		2476
		2477	warn "entering sync_job";
		2478
		2479	cf::sync_job {
		2480	cf::write_runtime; # external watchdog should not bark
		2481	cf::emergency_save;
		2482	cf::write_runtime; # external watchdog should not bark
		2483
		2484	warn "syncing database to disk";
		2485	BDB::db_env_txn_checkpoint $DB_ENV;
		2486
		2487	# if anything goes wrong in here, we should simply crash as we already saved
		2488
		2489	warn "cancelling all WF_AUTOCANCEL watchers";
		2490	for (Event::all_watchers) {
		2491	$_->cancel if $_->data & WF_AUTOCANCEL;
		2492	}
		2493
		2494	warn "flushing outstanding aio requests";
		2495	for (;;) {
		2496	BDB::flush;
		2497	IO::AIO::flush;
		2498	Coro::cede;
		2499	last unless IO::AIO::nreqs || BDB::nreqs;
		2500	warn "iterate...";
		2501	}
		2502
		2503	++$RELOAD;
		2504
		2505	warn "cancelling all extension coros";
		2506	$_->cancel for values %EXT_CORO;
		2507	%EXT_CORO = ();
		2508
		2509	warn "removing commands";
		2510	%COMMAND = ();
		2511
		2512	warn "removing ext commands";
		2513	%EXTCMD = ();
		2514
		2515	warn "unloading/nuking all extensions";
		2516	for my $pkg (@EXTS) {
		2517	warn "... unloading $pkg";
		2518
		2519	if (my $cb = $pkg->can ("unload")) {
		2520	eval {
		2521	$cb->($pkg);
		2522	1
		2523	} or warn "$pkg unloaded, but with errors: $@";
		2524	}
		2525
		2526	warn "... nuking $pkg";
		2527	Symbol::delete_package $pkg;
		2528	}
		2529
		2530	warn "unloading all perl modules loaded from $LIBDIR";
		2531	while (my ($k, $v) = each %INC) {
		2532	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2533
		2534	warn "... unloading $k";
		2535	delete $INC{$k};
		2536
		2537	$k =~ s/\.pm$//;
		2538	$k =~ s/\//::/g;
		2539
		2540	if (my $cb = $k->can ("unload_module")) {
		2541	$cb->();
		2542	}
		2543
		2544	Symbol::delete_package $k;
		2545	}
		2546
		2547	warn "getting rid of safe::, as good as possible";
		2548	Symbol::delete_package "safe::$_"
		2549	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2550
		2551	warn "unloading cf.pm \"a bit\"";
		2552	delete $INC{"cf.pm"};
		2553
		2554	# don't, removes xs symbols, too,
		2555	# and global variables created in xs
		2556	#Symbol::delete_package __PACKAGE__;
		2557
		2558	warn "unload completed, starting to reload now";
		2559
		2560	warn "reloading cf.pm";
		2561	require cf;
		2562	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2563
		2564	warn "loading config and database again";
		2565	cf::cfg_load;
		2566
		2567	warn "loading extensions";
		2568	cf::load_extensions;
		2569
		2570	warn "reattaching attachments to objects/players";
		2571	_global_reattach; # objects, sockets
		2572	warn "reattaching attachments to maps";
		2573	reattach $_ for values %MAP;
		2574	warn "reattaching attachments to players";
		2575	reattach $_ for values %PLAYER;
		2576
		2577	warn "loading reloadable resources";
		2578	reload_resources;
		2579
		2580	warn "leaving sync_job";
		2581
		2582	1
		2583	} or do {
		2584	warn $@;
		2585	warn "error while reloading, exiting.";
		2586	exit 1;
		2587	};
		2588
		2589	warn "reloaded";
		2590	};
		2591
		2592	our $RELOAD_WATCHER; # used only during reload
		2593
		2594	register_command "reload" => sub {
		2595	my ($who, $arg) = @_;
		2596
		2597	if ($who->flag (FLAG_WIZ)) {
		2598	$who->message ("reloading server.");
		2599
		2600	# doing reload synchronously and two reloads happen back-to-back,
		2601	# coro crashes during coro_state_free->destroy here.
		2602
		2603	$RELOAD_WATCHER ||= Event->timer (
		2604	reentrant => 0,
		2605	after => 0,
		2606	data => WF_AUTOCANCEL,
		2607	cb => sub {
		2608	reload;
		2609	undef $RELOAD_WATCHER;
		2610	},
		2611	);
		2612	}
		2613	};
911		2614
912	unshift @INC, $LIBDIR;	2615	unshift @INC, $LIBDIR;
913		2616
		2617	my $bug_warning = 0;
		2618
914	$TICK_WATCHER = Event->timer (	2619	$TICK_WATCHER = Event->timer (
		2620	reentrant => 0,
		2621	parked => 1,
915	prio => 1,	2622	prio => 0,
916	at => $NEXT_TICK || 1,	2623	at => $NEXT_TICK || $TICK,
		2624	data => WF_AUTOCANCEL,
917	cb => sub {	2625	cb => sub {
		2626	if ($Coro::current != $Coro::main) {
		2627	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2628	unless ++$bug_warning > 10;
		2629	return;
		2630	}
		2631
		2632	$NOW = Event::time;
		2633
918	cf::server_tick; # one server iteration	2634	cf::server_tick; # one server iteration
919		2635	$RUNTIME += $TICK;
920	my $NOW = Event::time;
921	$NEXT_TICK += $TICK;	2636	$NEXT_TICK += $TICK;
922		2637
		2638	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2639	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2640	Coro::async_pool {
		2641	write_runtime
		2642	or warn "ERROR: unable to write runtime file: $!";
		2643	};
		2644	}
		2645
		2646	$WAIT_FOR_TICK->broadcast;
		2647	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2648
		2649	# my $AFTER = Event::time;
		2650	# warn $AFTER - $NOW;#d#
		2651
923	# if we are delayed by four ticks, skip them all	2652	# if we are delayed by four ticks or more, skip them all
924	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2653	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
925		2654
926	$TICK_WATCHER->at ($NEXT_TICK);	2655	$TICK_WATCHER->at ($NEXT_TICK);
927	$TICK_WATCHER->start;	2656	$TICK_WATCHER->start;
928	},	2657	},
929	);	2658	);
930		2659
		2660	{
		2661	BDB::max_poll_time $TICK * 0.1;
		2662	$BDB_POLL_WATCHER = Event->io (
		2663	reentrant => 0,
		2664	fd => BDB::poll_fileno,
		2665	poll => 'r',
		2666	prio => 0,
		2667	data => WF_AUTOCANCEL,
		2668	cb => \&BDB::poll_cb,
		2669	);
		2670	BDB::min_parallel 8;
		2671
		2672	BDB::set_sync_prepare {
		2673	my $status;
		2674	my $current = $Coro::current;
		2675	(
		2676	sub {
		2677	$status = $!;
		2678	$current->ready; undef $current;
		2679	},
		2680	sub {
		2681	Coro::schedule while defined $current;
		2682	$! = $status;
		2683	},
		2684	)
		2685	};
		2686
		2687	unless ($DB_ENV) {
		2688	$DB_ENV = BDB::db_env_create;
		2689
		2690	cf::sync_job {
		2691	eval {
		2692	BDB::db_env_open
		2693	$DB_ENV,
		2694	$BDB_ENV_DIR,
		2695	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2696	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2697	0666;
		2698
		2699	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2700
		2701	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2702	$DB_ENV->set_lk_detect;
		2703	};
		2704
		2705	cf::cleanup "db_env_open(db): $@" if $@;
		2706	};
		2707	}
		2708	}
		2709
		2710	{
		2711	IO::AIO::min_parallel 8;
		2712
		2713	undef $Coro::AIO::WATCHER;
		2714	IO::AIO::max_poll_time $TICK * 0.1;
		2715	$AIO_POLL_WATCHER = Event->io (
		2716	reentrant => 0,
		2717	data => WF_AUTOCANCEL,
		2718	fd => IO::AIO::poll_fileno,
		2719	poll => 'r',
		2720	prio => 6,
		2721	cb => \&IO::AIO::poll_cb,
		2722	);
		2723	}
		2724
		2725	END { cf::emergency_save }
		2726
931	1	2727	1
932		2728

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