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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC vs.
Revision 1.228 by root, Mon Mar 26 16:53:33 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;
10	use YAML::Syck ();	26	use YAML::Syck ();
		27	use IO::AIO 2.32 ();
11	use Time::HiRes;	28	use Time::HiRes;
12	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
13	$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
14		37
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	38	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
16	$YAML::Syck::ImplicitUnicode = 1;	39	$YAML::Syck::ImplicitUnicode = 1;
17		40
18	use strict;	41	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		42
20	_init_vars;	43	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		44
22	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
23	our @EVENT;	54	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	55	our $LIBDIR = datadir . "/ext";
25		56
26	our $TICK = MAX_TIME * 1e-6;	57	our $TICK = MAX_TIME * 1e-6;
27	our $TICK_WATCHER;	58	our $TICK_WATCHER;
		59	our $AIO_POLL_WATCHER;
		60	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	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;
29		67
30	our %CFG;	68	our %CFG;
31		69
32	our $uptime;	70	our $UPTIME; $UPTIME ||= time;
		71	our $RUNTIME;
33		72
34	$uptime ||= time;	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;
35		105
36	#############################################################################	106	#############################################################################
37		107
38	=head2 GLOBAL VARIABLES	108	=head2 GLOBAL VARIABLES
39		109
40	=over 4	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.
41		120
42	=item $cf::LIBDIR	121	=item $cf::LIBDIR
43		122
44	The perl library directory, where extensions and cf-specific modules can	123	The perl library directory, where extensions and cf-specific modules can
45	be found. It will be added to C<@INC> automatically.	124	be found. It will be added to C<@INC> automatically.
46		125
		126	=item $cf::NOW
		127
		128	The time of the last (current) server tick.
		129
47	=item $cf::TICK	130	=item $cf::TICK
48		131
49	The interval between server ticks, in seconds.	132	The interval between server ticks, in seconds.
50		133
51	=item %cf::CFG	134	=item %cf::CFG
52		135
53	Configuration for the server, loaded from C</etc/crossfire/config>, or	136	Configuration for the server, loaded from C</etc/crossfire/config>, or
54	from wherever your confdir points to.	137	from wherever your confdir points to.
		138
		139	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		140
		141	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		142	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		143	processing has been done. Call C<< ->wait >> on them to maximise the
		144	window of cpu time available, or simply to synchronise to the server tick.
55		145
56	=back	146	=back
57		147
58	=cut	148	=cut
59		149
60	BEGIN {	150	BEGIN {
61	*CORE::GLOBAL::warn = sub {	151	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	152	my $msg = join "", @_;
		153	utf8::encode $msg;
		154
63	$msg .= "\n"	155	$msg .= "\n"
64	unless $msg =~ /\n$/;	156	unless $msg =~ /\n$/;
65		157
66	print STDERR "cfperl: $msg";
67	LOG llevError, "cfperl: $msg";	158	LOG llevError, $msg;
68	};	159	};
69	}	160	}
70		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';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	167	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		168
73	# 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
74	# within the Safe compartment.	170	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	171	for my $pkg (qw(
		172	cf::global cf::attachable
		173	cf::object cf::object::player
		174	cf::client cf::player
		175	cf::arch cf::living
		176	cf::map cf::party cf::region
		177	)) {
76	no strict 'refs';	178	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	179	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	180	}
79		181
80	$Event::DIED = sub {	182	$Event::DIED = sub {
81	warn "error in event callback: @_";	183	warn "error in event callback: @_";
82	};	184	};
83		185
84	my %ext_pkg;
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89
90	=head2 UTILITY FUNCTIONS	186	=head2 UTILITY FUNCTIONS
91		187
92	=over 4	188	=over 4
93		189
94	=cut	190	=item dumpval $ref
95		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
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	213	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
97		214
98	=item $ref = cf::from_json $json	215	=item $ref = cf::from_json $json
99		216
100	Converts a JSON string into the corresponding perl data structure.	217	Converts a JSON string into the corresponding perl data structure.
101		218
102	=cut
103
104	sub from_json($) {
105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
106	JSON::Syck::Load $_[0]
107	}
108
109	=item $json = cf::to_json $ref	219	=item $json = cf::to_json $ref
110		220
111	Converts a perl data structure into its JSON representation.	221	Converts a perl data structure into its JSON representation.
112		222
113	=cut	223	=item cf::lock_wait $string
114		224
115	sub to_json($) {	225	Wait until the given lock is available. See cf::lock_acquire.
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	226
117	JSON::Syck::Dump $_[0]	227	=item my $lock = cf::lock_acquire $string
		228
		229	Wait until the given lock is available and then acquires it and returns
		230	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		231	for example when the coroutine gets canceled), the lock is automatically
		232	returned.
		233
		234	Lock names should begin with a unique identifier (for example, cf::map::find
		235	uses map_find and cf::map::load uses map_load).
		236
		237	=cut
		238
		239	our %LOCK;
		240
		241	sub lock_wait($) {
		242	my ($key) = @_;
		243
		244	# wait for lock, if any
		245	while ($LOCK{$key}) {
		246	push @{ $LOCK{$key} }, $Coro::current;
		247	Coro::schedule;
		248	}
		249	}
		250
		251	sub lock_acquire($) {
		252	my ($key) = @_;
		253
		254	# wait, to be sure we are not locked
		255	lock_wait $key;
		256
		257	$LOCK{$key} = [];
		258
		259	Coro::guard {
		260	# wake up all waiters, to be on the safe side
		261	$_->ready for @{ delete $LOCK{$key} };
		262	}
		263	}
		264
		265	sub freeze_mainloop {
		266	return unless $TICK_WATCHER->is_active;
		267
		268	my $guard = Coro::guard {
		269	$TICK_WATCHER->start;
		270	};
		271	$TICK_WATCHER->stop;
		272	$guard
		273	}
		274
		275	=item cf::async { BLOCK }
		276
		277	Currently the same as Coro::async_pool, meaning you cannot use
		278	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		279	thing you are allowed to do is call C<prio> on it.
		280
		281	=cut
		282
		283	BEGIN { *async = \&Coro::async_pool }
		284
		285	=item cf::sync_job { BLOCK }
		286
		287	The design of crossfire+ requires that the main coro ($Coro::main) is
		288	always able to handle events or runnable, as crossfire+ is only partly
		289	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		290
		291	If it must be done, put the blocking parts into C<sync_job>. This will run
		292	the given BLOCK in another coroutine while waiting for the result. The
		293	server will be frozen during this time, so the block should either finish
		294	fast or be very important.
		295
		296	=cut
		297
		298	sub sync_job(&) {
		299	my ($job) = @_;
		300
		301	if ($Coro::current == $Coro::main) {
		302	# this is the main coro, too bad, we have to block
		303	# till the operation succeeds, freezing the server :/
		304
		305	# TODO: use suspend/resume instead
		306	# (but this is cancel-safe)
		307	my $freeze_guard = freeze_mainloop;
		308
		309	my $busy = 1;
		310	my @res;
		311
		312	(async {
		313	@res = eval { $job->() };
		314	warn $@ if $@;
		315	undef $busy;
		316	})->prio (Coro::PRIO_MAX);
		317
		318	while ($busy) {
		319	Coro::cede or Event::one_event;
		320	}
		321
		322	wantarray ? @res : $res[0]
		323	} else {
		324	# we are in another coroutine, how wonderful, everything just works
		325
		326	$job->()
		327	}
		328	}
		329
		330	=item $coro = cf::async_ext { BLOCK }
		331
		332	Like async, but this coro is automatically being canceled when the
		333	extension calling this is being unloaded.
		334
		335	=cut
		336
		337	sub async_ext(&) {
		338	my $cb = shift;
		339
		340	my $coro = &Coro::async ($cb);
		341
		342	$coro->on_destroy (sub {
		343	delete $EXT_CORO{$coro+0};
		344	});
		345	$EXT_CORO{$coro+0} = $coro;
		346
		347	$coro
		348	}
		349
		350	sub write_runtime {
		351	my $guard = cf::lock_acquire "write_runtime";
		352
		353	my $runtime = cf::localdir . "/runtime";
		354
		355	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		356	or return;
		357
		358	my $value = $cf::RUNTIME + 90 + 10;
		359	# 10 is the runtime save interval, for a monotonic clock
		360	# 60 allows for the watchdog to kill the server.
		361
		362	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		363	and return;
		364
		365	# always fsync - this file is important
		366	aio_fsync $fh
		367	and return;
		368
		369	close $fh
		370	or return;
		371
		372	aio_rename "$runtime~", $runtime
		373	and return;
		374
		375	1
118	}	376	}
119		377
120	=back	378	=back
121		379
122	=cut	380	=cut
123		381
124	#############################################################################	382	#############################################################################
125		383
126	=head2 EVENTS AND OBJECT ATTACHMENTS	384	=head2 ATTACHABLE OBJECTS
		385
		386	Many objects in crossfire are so-called attachable objects. That means you can
		387	attach callbacks/event handlers (a collection of which is called an "attachment")
		388	to it. All such attachable objects support the following methods.
		389
		390	In the following description, CLASS can be any of C<global>, C<object>
		391	C<player>, C<client> or C<map> (i.e. the attachable objects in
		392	crossfire+).
127		393
128	=over 4	394	=over 4
129		395
130	=item $object->attach ($attachment, key => $value...)
131
132	=item $object->detach ($attachment)
133
134	Attach/detach a pre-registered attachment to an object.
135
136	=item $player->attach ($attachment, key => $value...)
137
138	=item $player->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to a player.
141
142	=item $map->attach ($attachment, key => $value...)	396	=item $attachable->attach ($attachment, key => $value...)
143		397
144	=item $map->detach ($attachment)	398	=item $attachable->detach ($attachment)
145		399
146	Attach/detach a pre-registered attachment to a map.	400	Attach/detach a pre-registered attachment to a specific object and give it
		401	the specified key/value pairs as arguments.
147		402
148	=item $bool = $object->attached ($name)	403	Example, attach a minesweeper attachment to the given object, making it a
		404	10x10 minesweeper game:
149		405
150	=item $bool = $player->attached ($name)	406	$obj->attach (minesweeper => width => 10, height => 10);
151		407
152	=item $bool = $map->attached ($name)	408	=item $bool = $attachable->attached ($name)
153		409
154	Checks wether the named attachment is currently attached to the object.	410	Checks wether the named attachment is currently attached to the object.
155		411
156	=item cf::attach_global ...	412	=item cf::CLASS->attach ...
157		413
158	Attach handlers for global events.	414	=item cf::CLASS->detach ...
159		415
160	This and all following C<attach_*>-functions expect any number of the	416	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	417	CLASS. See the next function for an explanation of its arguments.
		418
		419	You can attach to global events by using the C<cf::global> class.
		420
		421	Example, log all player logins:
		422
		423	cf::player->attach (
		424	on_login => sub {
		425	my ($pl) = @_;
		426	...
		427	},
		428	);
		429
		430	Example, attach to the jeweler skill:
		431
		432	cf::object->attach (
		433	type => cf::SKILL,
		434	subtype => cf::SK_JEWELER,
		435	on_use_skill => sub {
		436	my ($sk, $ob, $part, $dir, $msg) = @_;
		437	...
		438	},
		439	);
		440
		441	=item cf::CLASS::attachment $name, ...
		442
		443	Register an attachment by C<$name> through which attachable objects of the
		444	given CLASS can refer to this attachment.
		445
		446	Some classes such as crossfire maps and objects can specify attachments
		447	that are attached at load/instantiate time, thus the need for a name.
		448
		449	These calls expect any number of the following handler/hook descriptions:
162		450
163	=over 4	451	=over 4
164		452
165	=item prio => $number	453	=item prio => $number
166		454
…		…
168	by another C<prio> setting). Lower priority handlers get executed	456	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	457	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	458	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	459	unless you know what you are doing.
172		460
		461	=item type => $type
		462
		463	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		464	given type of objects only (the additional parameter C<subtype> can be
		465	used to further limit to the given subtype).
		466
173	=item on_I<event> => \&cb	467	=item on_I<event> => \&cb
174		468
175	Call the given code reference whenever the named event happens (event is	469	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	470	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	471	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	480	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	481	object/class are recognised.
188		482
189	=back	483	=back
190		484
191	=item cf::attach_to_type $object_type, $subtype, ...	485	Example, define an attachment called "sockpuppet" that calls the given
		486	event handler when a monster attacks:
192		487
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	488	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	489	on_skill_attack => sub {
195	type.	490	my ($self, $victim) = @_;
196		491	...
197	=item cf::attach_to_objects ...
198
199	Attach handlers to all objects. Do not use this except for debugging or
200	very rare events, as handlers are (obviously) called for I<all> objects in
201	the game.
202
203	=item cf::attach_to_players ...
204
205	Attach handlers to all players.
206
207	=item cf::attach_to_maps ...
208
209	Attach handlers to all maps.
210
211	=item cf:register_attachment $name, ...
212
213	Register an attachment by name through which objects can refer to this
214	attachment.
215
216	=item cf:register_player_attachment $name, ...
217
218	Register an attachment by name through which players can refer to this
219	attachment.
220
221	=item cf:register_map_attachment $name, ...
222
223	Register an attachment by name through which maps can refer to this
224	attachment.
225
226	=cut
227
228	# the following variables are defined in .xs and must not be re-created
229	our @CB_GLOBAL = (); # registry for all global events
230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
231	our @CB_PLAYER = ();
232	our @CB_TYPE = (); # registry for type (cf-object class) based events
233	our @CB_MAP = ();
234
235	my %attachment;
236
237	sub _attach_cb($\%$$$) {
238	my ($registry, $undo, $event, $prio, $cb) = @_;
239
240	use sort 'stable';
241
242	$cb = [$prio, $cb];
243
244	@{$registry->[$event]} = sort
245	{ $a->[0] cmp $b->[0] }
246	@{$registry->[$event] || []}, $cb;
247
248	push @{$undo->{cb}}, [$event, $cb];
249	}
250
251	# attach handles attaching event callbacks
252	# the only thing the caller has to do is pass the correct
253	# registry (== where the callback attaches to).
254	sub _attach(\@$@) {
255	my ($registry, $klass, @arg) = @_;
256
257	my $prio = 0;
258
259	my %undo = (
260	registry => $registry,
261	cb => [],
262	);
263
264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
265
266	while (@arg) {
267	my $type = shift @arg;
268
269	if ($type eq "prio") {
270	$prio = shift @arg;
271
272	} elsif ($type eq "package") {
273	my $pkg = shift @arg;
274
275	while (my ($name, $id) = each %cb_id) {
276	if (my $cb = $pkg->can ($name)) {
277	_attach_cb $registry, %undo, $id, $prio, $cb;
278	}
279	}	492	}
280
281	} elsif (exists $cb_id{$type}) {
282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
283
284	} elsif (ref $type) {
285	warn "attaching objects not supported, ignoring.\n";
286
287	} else {
288	shift @arg;
289	warn "attach argument '$type' not supported, ignoring.\n";
290	}
291	}
292
293	\%undo
294	}
295
296	sub _attach_attachment {
297	my ($obj, $name, %arg) = @_;
298
299	return if exists $obj->{_attachment}{$name};
300
301	my $res;
302
303	if (my $attach = $attachment{$name}) {
304	my $registry = $obj->registry;
305
306	for (@$attach) {
307	my ($klass, @attach) = @$_;
308	$res = _attach @$registry, $klass, @attach;
309	}
310
311	$obj->{$name} = \%arg;
312	} else {
313	warn "object uses attachment '$name' that is not available, postponing.\n";
314	}
315
316	$obj->{_attachment}{$name} = undef;
317
318	$res->{attachment} = $name;
319	$res
320	}
321
322	*cf::object::attach =
323	*cf::player::attach =
324	*cf::map::attach = sub {
325	my ($obj, $name, %arg) = @_;
326
327	_attach_attachment $obj, $name, %arg;
328	};
329
330	# all those should be optimised
331	*cf::object::detach =
332	*cf::player::detach =
333	*cf::map::detach = sub {
334	my ($obj, $name) = @_;
335
336	delete $obj->{_attachment}{$name};
337	reattach ($obj);
338	};
339
340	*cf::object::attached =
341	*cf::player::attached =
342	*cf::map::attached = sub {
343	my ($obj, $name) = @_;
344
345	exists $obj->{_attachment}{$name}
346	};
347
348	sub attach_global {
349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
350	}
351
352	sub attach_to_type {
353	my $type = shift;
354	my $subtype = shift;
355
356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_objects {
360	_attach @CB_OBJECT, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_players {
364	_attach @CB_PLAYER, KLASS_PLAYER, @_
365	}
366
367	sub attach_to_maps {
368	_attach @CB_MAP, KLASS_MAP, @_
369	}
370
371	sub register_attachment {
372	my $name = shift;
373
374	$attachment{$name} = [[KLASS_OBJECT, @_]];
375	}
376
377	sub register_player_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_PLAYER, @_]];
381	}
382
383	sub register_map_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_MAP, @_]];
387	}
388
389	our $override;
390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
391
392	sub override {
393	$override = 1;
394	@invoke_results = ();
395	}
396
397	sub do_invoke {
398	my $event = shift;
399	my $callbacks = shift;
400
401	@invoke_results = ();
402
403	local $override;
404
405	for (@$callbacks) {
406	eval { &{$_->[1]} };
407
408	if ($@) {
409	warn "$@";
410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
411	override;
412	}
413
414	return 1 if $override;
415	}
416
417	0	493	}
418	}
419		494
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	495	=item $attachable->valid
421
422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
423
424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
425
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.
429
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL CORE OBJECTS
441
442	=over 4
443
444	=item $object->valid, $player->valid, $map->valid
445		496
446	Just because you have a perl object does not mean that the corresponding	497	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	498	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	499	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	500	can be used to test for existence of the C object part without causing an
450	exception.	501	exception.
451		502
		503	=cut
		504
		505	# the following variables are defined in .xs and must not be re-created
		506	our @CB_GLOBAL = (); # registry for all global events
		507	our @CB_ATTACHABLE = (); # registry for all attachables
		508	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		509	our @CB_PLAYER = ();
		510	our @CB_CLIENT = ();
		511	our @CB_TYPE = (); # registry for type (cf-object class) based events
		512	our @CB_MAP = ();
		513
		514	my %attachment;
		515
		516	sub cf::attachable::thawer_merge {
		517	# simply override everything except _meta
		518	local $_[0]{_meta};
		519	%{$_[0]} = %{$_[1]};
		520	}
		521
		522	sub _attach_cb($$$$) {
		523	my ($registry, $event, $prio, $cb) = @_;
		524
		525	use sort 'stable';
		526
		527	$cb = [$prio, $cb];
		528
		529	@{$registry->[$event]} = sort
		530	{ $a->[0] cmp $b->[0] }
		531	@{$registry->[$event] || []}, $cb;
		532	}
		533
		534	# hack
		535	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		536
		537	# attach handles attaching event callbacks
		538	# the only thing the caller has to do is pass the correct
		539	# registry (== where the callback attaches to).
		540	sub _attach {
		541	my ($registry, $klass, @arg) = @_;
		542
		543	my $object_type;
		544	my $prio = 0;
		545	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		546
		547	#TODO: get rid of this hack
		548	if ($attachable_klass{$klass}) {
		549	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		550	}
		551
		552	while (@arg) {
		553	my $type = shift @arg;
		554
		555	if ($type eq "prio") {
		556	$prio = shift @arg;
		557
		558	} elsif ($type eq "type") {
		559	$object_type = shift @arg;
		560	$registry = $CB_TYPE[$object_type] ||= [];
		561
		562	} elsif ($type eq "subtype") {
		563	defined $object_type or Carp::croak "subtype specified without type";
		564	my $object_subtype = shift @arg;
		565	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		566
		567	} elsif ($type eq "package") {
		568	my $pkg = shift @arg;
		569
		570	while (my ($name, $id) = each %cb_id) {
		571	if (my $cb = $pkg->can ($name)) {
		572	_attach_cb $registry, $id, $prio, $cb;
		573	}
		574	}
		575
		576	} elsif (exists $cb_id{$type}) {
		577	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		578
		579	} elsif (ref $type) {
		580	warn "attaching objects not supported, ignoring.\n";
		581
		582	} else {
		583	shift @arg;
		584	warn "attach argument '$type' not supported, ignoring.\n";
		585	}
		586	}
		587	}
		588
		589	sub _object_attach {
		590	my ($obj, $name, %arg) = @_;
		591
		592	return if exists $obj->{_attachment}{$name};
		593
		594	if (my $attach = $attachment{$name}) {
		595	my $registry = $obj->registry;
		596
		597	for (@$attach) {
		598	my ($klass, @attach) = @$_;
		599	_attach $registry, $klass, @attach;
		600	}
		601
		602	$obj->{$name} = \%arg;
		603	} else {
		604	warn "object uses attachment '$name' that is not available, postponing.\n";
		605	}
		606
		607	$obj->{_attachment}{$name} = undef;
		608	}
		609
		610	sub cf::attachable::attach {
		611	if (ref $_[0]) {
		612	_object_attach @_;
		613	} else {
		614	_attach shift->_attach_registry, @_;
		615	}
		616	};
		617
		618	# all those should be optimised
		619	sub cf::attachable::detach {
		620	my ($obj, $name) = @_;
		621
		622	if (ref $obj) {
		623	delete $obj->{_attachment}{$name};
		624	reattach ($obj);
		625	} else {
		626	Carp::croak "cannot, currently, detach class attachments";
		627	}
		628	};
		629
		630	sub cf::attachable::attached {
		631	my ($obj, $name) = @_;
		632
		633	exists $obj->{_attachment}{$name}
		634	}
		635
		636	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		637	eval "#line " . __LINE__ . " 'cf.pm'
		638	sub cf::\L$klass\E::_attach_registry {
		639	(\\\@CB_$klass, KLASS_$klass)
		640	}
		641
		642	sub cf::\L$klass\E::attachment {
		643	my \$name = shift;
		644
		645	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		646	}
		647	";
		648	die if $@;
		649	}
		650
		651	our $override;
		652	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		653
		654	sub override {
		655	$override = 1;
		656	@invoke_results = ();
		657	}
		658
		659	sub do_invoke {
		660	my $event = shift;
		661	my $callbacks = shift;
		662
		663	@invoke_results = ();
		664
		665	local $override;
		666
		667	for (@$callbacks) {
		668	eval { &{$_->[1]} };
		669
		670	if ($@) {
		671	warn "$@";
		672	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		673	override;
		674	}
		675
		676	return 1 if $override;
		677	}
		678
		679	0
		680	}
		681
		682	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		683
		684	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		685
		686	Generate an object-specific event with the given arguments.
		687
		688	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		689	removed in future versions), and there is no public API to access override
		690	results (if you must, access C<@cf::invoke_results> directly).
		691
452	=back	692	=back
453		693
454	=cut	694	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		695
460	#############################################################################	696	#############################################################################
461	# object support	697	# object support
462		698
463	sub instantiate {
464	my ($obj, $data) = @_;
465
466	$data = from_json $data;
467
468	for (@$data) {
469	my ($name, $args) = @$_;
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}
474
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	699	sub reattach {
		700	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	701	my ($obj) = @_;
		702
		703	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		704
478	my $registry = $obj->registry;	705	my $registry = $obj->registry;
479		706
480	@$registry = ();	707	@$registry = ();
481		708
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	709	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		710
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	711	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	712	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	713	for (@$attach) {
487	my ($klass, @attach) = @$_;	714	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	715	_attach $registry, $klass, @attach;
489	}	716	}
490	} else {	717	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	718	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	719	}
493	}	720	}
494	}	721	}
495		722
496	sub object_freezer_save {	723	cf::attachable->attach (
497	my ($filename, $rdata, $objs) = @_;
498
499	if (length $$rdata) {
500	warn sprintf "saving %s (%d,%d)\n",
501	$filename, length $$rdata, scalar @$objs;
502
503	if (open my $fh, ">:raw", "$filename~") {
504	chmod SAVE_MODE, $fh;
505	syswrite $fh, $$rdata;
506	close $fh;
507
508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
509	chmod SAVE_MODE, $fh;
510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
511	close $fh;
512	rename "$filename.pst~", "$filename.pst";
513	} else {
514	unlink "$filename.pst";
515	}
516
517	rename "$filename~", $filename;
518	} else {
519	warn "FATAL: $filename~: $!\n";
520	}
521	} else {
522	unlink $filename;
523	unlink "$filename.pst";
524	}
525	}
526
527	sub object_thawer_load {
528	my ($filename) = @_;
529
530	local $/;
531
532	my $av;
533
534	#TODO: use sysread etc.
535	if (open my $data, "<:raw:perlio", $filename) {
536	$data = <$data>;
537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
538	$av = eval { (Storable::thaw <$pst>)->{objs} };
539	}
540	return ($data, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	724	prio => -1000000,
		725	on_instantiate => sub {
		726	my ($obj, $data) = @_;
		727
		728	$data = from_json $data;
		729
		730	for (@$data) {
		731	my ($name, $args) = @$_;
		732
		733	$obj->attach ($name, %{$args || {} });
		734	}
		735	},
		736	on_reattach => \&reattach,
548	on_clone => sub {	737	on_clone => sub {
549	my ($src, $dst) = @_;	738	my ($src, $dst) = @_;
550		739
551	@{$dst->registry} = @{$src->registry};	740	@{$dst->registry} = @{$src->registry};
552		741
553	%$dst = %$src;	742	%$dst = %$src;
554		743
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	744	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	745	if exists $src->{_attachment};
557	},	746	},
558	;	747	);
		748
		749	sub object_freezer_save {
		750	my ($filename, $rdata, $objs) = @_;
		751
		752	sync_job {
		753	if (length $$rdata) {
		754	warn sprintf "saving %s (%d,%d)\n",
		755	$filename, length $$rdata, scalar @$objs;
		756
		757	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		758	chmod SAVE_MODE, $fh;
		759	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		760	aio_fsync $fh if $cf::USE_FSYNC;
		761	close $fh;
		762
		763	if (@$objs) {
		764	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		765	chmod SAVE_MODE, $fh;
		766	my $data = Storable::nfreeze { version => 1, objs => $objs };
		767	aio_write $fh, 0, (length $data), $data, 0;
		768	aio_fsync $fh if $cf::USE_FSYNC;
		769	close $fh;
		770	aio_rename "$filename.pst~", "$filename.pst";
		771	}
		772	} else {
		773	aio_unlink "$filename.pst";
		774	}
		775
		776	aio_rename "$filename~", $filename;
		777	} else {
		778	warn "FATAL: $filename~: $!\n";
		779	}
		780	} else {
		781	aio_unlink $filename;
		782	aio_unlink "$filename.pst";
		783	}
		784	}
		785	}
		786
		787	sub object_freezer_as_string {
		788	my ($rdata, $objs) = @_;
		789
		790	use Data::Dumper;
		791
		792	$$rdata . Dumper $objs
		793	}
		794
		795	sub object_thawer_load {
		796	my ($filename) = @_;
		797
		798	my ($data, $av);
		799
		800	(aio_load $filename, $data) >= 0
		801	or return;
		802
		803	unless (aio_stat "$filename.pst") {
		804	(aio_load "$filename.pst", $av) >= 0
		805	or return;
		806	$av = eval { (Storable::thaw $av)->{objs} };
		807	}
		808
		809	warn sprintf "loading %s (%d)\n",
		810	$filename, length $data, scalar @{$av || []};#d#
		811	return ($data, $av);
		812	}
559		813
560	#############################################################################	814	#############################################################################
561	# old plug-in events	815	# command handling &c
562		816
563	sub inject_event {	817	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		818
567	my $cb = $hook[$event_code]{$extension}	819	Register a callback for execution when the client sends the user command
568	or return;	820	$name.
569		821
570	&$cb	822	=cut
571	}
572
573	sub inject_global_event {
574	my $event = shift;
575
576	my $cb = $hook[$event]
577	or return;
578
579	List::Util::max map &$_, values %$cb
580	}
581
582	sub inject_command {
583	my ($name, $obj, $params) = @_;
584
585	for my $cmd (@{ $command{$name} }) {
586	$cmd->[1]->($obj, $params);
587	}
588
589	-1
590	}
591		823
592	sub register_command {	824	sub register_command {
593	my ($name, $time, $cb) = @_;	825	my ($name, $cb) = @_;
594		826
595	my $caller = caller;	827	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	828	#warn "registering command '$name/$time' to '$caller'";
597		829
598	push @{ $command{$name} }, [$time, $cb, $caller];	830	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	831	}
		832
		833	=item cf::register_extcmd $name => \&callback($pl,$packet);
		834
		835	Register a callbackf ro execution when the client sends an extcmd packet.
		836
		837	If the callback returns something, it is sent back as if reply was being
		838	called.
		839
		840	=cut
601		841
602	sub register_extcmd {	842	sub register_extcmd {
603	my ($name, $cb) = @_;	843	my ($name, $cb) = @_;
604		844
605	my $caller = caller;	845	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	846	}
610		847
611	sub register {	848	cf::player->attach (
612	my ($base, $pkg) = @_;	849	on_command => sub {
		850	my ($pl, $name, $params) = @_;
613		851
614	#TODO	852	my $cb = $COMMAND{$name}
615	}	853	or return;
		854
		855	for my $cmd (@$cb) {
		856	$cmd->[1]->($pl->ob, $params);
		857	}
		858
		859	cf::override;
		860	},
		861	on_extcmd => sub {
		862	my ($pl, $buf) = @_;
		863
		864	my $msg = eval { from_json $buf };
		865
		866	if (ref $msg) {
		867	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		868	if (my %reply = $cb->($pl, $msg)) {
		869	$pl->ext_reply ($msg->{msgid}, %reply);
		870	}
		871	}
		872	} else {
		873	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		874	}
		875
		876	cf::override;
		877	},
		878	);
616		879
617	sub load_extension {	880	sub load_extension {
618	my ($path) = @_;	881	my ($path) = @_;
619		882
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	883	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
621	my $base = $1;	884	my $base = $1;
622	my $pkg = $1;	885	my $pkg = $1;
623	$pkg =~ s/[^[:word:]]/_/g;	886	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";	887	$pkg = "ext::$pkg";
625		888
626	warn "loading '$path' into '$pkg'\n";	889	warn "... loading '$path' into '$pkg'\n";
627		890
628	open my $fh, "<:utf8", $path	891	open my $fh, "<:utf8", $path
629	or die "$path: $!";	892	or die "$path: $!";
630		893
631	my $source =	894	my $source =
632	"package $pkg; use strict; use utf8;\n"	895	"package $pkg; use strict; use utf8;\n"
633	. "#line 1 \"$path\"\n{\n"	896	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })	897	. (do { local $/; <$fh> })
635	. "\n};\n1";	898	. "\n};\n1";
636		899
637	eval $source	900	unless (eval $source) {
638	or die "$path: $@";	901	my $msg = $@ ? "$path: $@\n"
639		902	: "extension disabled.\n";
640	push @exts, $pkg;	903	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
641	$ext_pkg{$base} = $pkg;	904	warn $@;
642		905	warn "mandatory extension failed to load, exiting.\n";
643	# no strict 'refs';	906	exit 1;
644	# @{"$pkg\::ISA"} = ext::;	907	}
645		908	die $@;
646	register $base, $pkg;
647	}
648
649	sub unload_extension {
650	my ($pkg) = @_;
651
652	warn "removing extension $pkg\n";
653
654	# remove hooks
655	#TODO
656	# for my $idx (0 .. $#PLUGIN_EVENT) {
657	# delete $hook[$idx]{$pkg};
658	# }	909	}
659		910
660	# remove commands	911	push @EXTS, $pkg;
661	for my $name (keys %command) {
662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
663
664	if (@cb) {
665	$command{$name} = \@cb;
666	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
667	} else {
668	delete $command{$name};
669	delete $COMMAND{"$name\000"};
670	}
671	}
672
673	# remove extcmds
674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
675	delete $extcmd{$name};
676	}
677
678	if (my $cb = $pkg->can ("unload")) {
679	eval {
680	$cb->($pkg);
681	1
682	} or warn "$pkg unloaded, but with errors: $@";
683	}
684
685	Symbol::delete_package $pkg;
686	}	912	}
687		913
688	sub load_extensions {	914	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {	915	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;	916	next unless -r $ext;
693	eval {	917	eval {
694	load_extension $ext;	918	load_extension $ext;
695	1	919	1
696	} or warn "$ext not loaded: $@";	920	} or warn "$ext not loaded: $@";
697	}	921	}
698	}	922	}
699		923
700	#############################################################################	924	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703		925
704	attach_to_players	926	=head2 CORE EXTENSIONS
705	on_extcmd => sub {	927
		928	Functions and methods that extend core crossfire objects.
		929
		930	=cut
		931
		932	package cf::player;
		933
		934	use Coro::AIO;
		935
		936	=head3 cf::player
		937
		938	=over 4
		939
		940	=item cf::player::find $login
		941
		942	Returns the given player object, loading it if necessary (might block).
		943
		944	=cut
		945
		946	sub playerdir($) {
		947	cf::localdir
		948	. "/"
		949	. cf::playerdir
		950	. "/"
		951	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		952	}
		953
		954	sub path($) {
		955	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		956
		957	(playerdir $login) . "/$login.pl"
		958	}
		959
		960	sub find_active($) {
		961	$cf::PLAYER{$_[0]}
		962	and $cf::PLAYER{$_[0]}->active
		963	and $cf::PLAYER{$_[0]}
		964	}
		965
		966	sub exists($) {
		967	my ($login) = @_;
		968
		969	$cf::PLAYER{$login}
		970	or cf::sync_job { !aio_stat path $login }
		971	}
		972
		973	sub find($) {
		974	return $cf::PLAYER{$_[0]} || do {
		975	my $login = $_[0];
		976
		977	my $guard = cf::lock_acquire "user_find:$login";
		978
		979	$cf::PLAYER{$_[0]} || do {
		980	my $pl = load_pl path $login
		981	or return;
		982	$cf::PLAYER{$login} = $pl
		983	}
		984	}
		985	}
		986
		987	sub save($) {
		988	my ($pl) = @_;
		989
		990	return if $pl->{deny_save};
		991
		992	my $path = path $pl;
		993	my $guard = cf::lock_acquire "user_save:$path";
		994
		995	return if $pl->{deny_save};
		996
		997	aio_mkdir playerdir $pl, 0770;
		998	$pl->{last_save} = $cf::RUNTIME;
		999
		1000	$pl->save_pl ($path);
		1001	Coro::cede;
		1002	}
		1003
		1004	sub new($) {
		1005	my ($login) = @_;
		1006
		1007	my $self = create;
		1008
		1009	$self->ob->name ($login);
		1010	$self->{deny_save} = 1;
		1011
		1012	$cf::PLAYER{$login} = $self;
		1013
		1014	$self
		1015	}
		1016
		1017	=item $pl->quit_character
		1018
		1019	Nukes the player without looking back. If logged in, the connection will
		1020	be destroyed. May block for a long time.
		1021
		1022	=cut
		1023
		1024	sub quit_character {
		1025	my ($pl) = @_;
		1026
		1027	my $name = $pl->ob->name;
		1028
		1029	$pl->{deny_save} = 1;
		1030	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1031
		1032	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1033	$pl->deactivate;
		1034	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1035	$pl->ns->destroy if $pl->ns;
		1036
		1037	my $path = playerdir $pl;
		1038	my $temp = "$path~$cf::RUNTIME~deleting~";
		1039	aio_rename $path, $temp;
		1040	delete $cf::PLAYER{$pl->ob->name};
		1041	$pl->destroy;
		1042
		1043	my $prefix = qr<^~\Q$name\E/>;
		1044
		1045	# nuke player maps
		1046	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1047
		1048	IO::AIO::aio_rmtree $temp;
		1049	}
		1050
		1051	=item $pl->kick
		1052
		1053	Kicks a player out of the game. This destroys the connection.
		1054
		1055	=cut
		1056
		1057	sub kick {
		1058	my ($pl, $kicker) = @_;
		1059
		1060	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1061	$pl->killer ("kicked");
		1062	$pl->ns->destroy;
		1063	}
		1064
		1065	=item cf::player::list_logins
		1066
		1067	Returns am arrayref of all valid playernames in the system, can take a
		1068	while and may block, so not sync_job-capable, ever.
		1069
		1070	=cut
		1071
		1072	sub list_logins {
		1073	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1074	or return [];
		1075
		1076	my @logins;
		1077
		1078	for my $login (@$dirs) {
		1079	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1080	aio_read $fh, 0, 512, my $buf, 0 or next;
		1081	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1082
		1083	utf8::decode $login;
		1084	push @logins, $login;
		1085	}
		1086
		1087	\@logins
		1088	}
		1089
		1090	=item $player->maps
		1091
		1092	Returns an arrayref of map paths that are private for this
		1093	player. May block.
		1094
		1095	=cut
		1096
		1097	sub maps($) {
		1098	my ($pl) = @_;
		1099
		1100	$pl = ref $pl ? $pl->ob->name : $pl;
		1101
		1102	my $files = aio_readdir playerdir $pl
		1103	or return;
		1104
		1105	my @paths;
		1106
		1107	for (@$files) {
		1108	utf8::decode $_;
		1109	next if /\.(?:pl|pst)$/;
		1110	next unless /^$PATH_SEP/o;
		1111
		1112	push @paths, cf::map::normalise "~$pl/$_";
		1113	}
		1114
		1115	\@paths
		1116	}
		1117
		1118	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1119
		1120	Sends an ext reply to the player.
		1121
		1122	=cut
		1123
		1124	sub ext_reply($$$%) {
		1125	my ($self, $id, %msg) = @_;
		1126
		1127	$msg{msgid} = $id;
		1128
		1129	$self->send ("ext " . cf::to_json \%msg);
		1130	}
		1131
		1132	package cf;
		1133
		1134	=back
		1135
		1136
		1137	=head3 cf::map
		1138
		1139	=over 4
		1140
		1141	=cut
		1142
		1143	package cf::map;
		1144
		1145	use Fcntl;
		1146	use Coro::AIO;
		1147
		1148	use overload
		1149	'""' => \&as_string,
		1150	fallback => 1;
		1151
		1152	our $MAX_RESET = 3600;
		1153	our $DEFAULT_RESET = 3000;
		1154
		1155	sub generate_random_map {
		1156	my ($self, $rmp) = @_;
		1157	# mit "rum" bekleckern, nicht
		1158	$self->_create_random_map (
		1159	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1160	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1161	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1162	$rmp->{exit_on_final_map},
		1163	$rmp->{xsize}, $rmp->{ysize},
		1164	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1165	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1166	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1167	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1168	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1169	(cf::region::find $rmp->{region}), $rmp->{custom}
		1170	)
		1171	}
		1172
		1173	=item cf::map->register ($regex, $prio)
		1174
		1175	Register a handler for the map path matching the given regex at the
		1176	givne priority (higher is better, built-in handlers have priority 0, the
		1177	default).
		1178
		1179	=cut
		1180
		1181	sub register {
		1182	my (undef, $regex, $prio) = @_;
		1183	my $pkg = caller;
		1184
		1185	no strict;
		1186	push @{"$pkg\::ISA"}, __PACKAGE__;
		1187
		1188	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1189	}
		1190
		1191	# also paths starting with '/'
		1192	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1193
		1194	sub thawer_merge {
		1195	my ($self, $merge) = @_;
		1196
		1197	# we have to keep some variables in memory intact
		1198	local $self->{path};
		1199	local $self->{load_path};
		1200	local $self->{deny_save};
		1201	local $self->{deny_reset};
		1202
		1203	$self->SUPER::thawer_merge ($merge);
		1204	}
		1205
		1206	sub normalise {
		1207	my ($path, $base) = @_;
		1208
		1209	$path = "$path"; # make sure its a string
		1210
		1211	$path =~ s/\.map$//;
		1212
		1213	# map plan:
		1214	#
		1215	# /! non-realised random map exit (special hack!)
		1216	# {... are special paths that are not being touched
		1217	# ?xxx/... are special absolute paths
		1218	# ?random/... random maps
		1219	# /... normal maps
		1220	# ~user/... per-player map of a specific user
		1221
		1222	$path =~ s/$PATH_SEP/\//go;
		1223
		1224	# treat it as relative path if it starts with
		1225	# something that looks reasonable
		1226	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1227	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1228
		1229	$base =~ s{[^/]+/?$}{};
		1230	$path = "$base/$path";
		1231	}
		1232
		1233	for ($path) {
		1234	redo if s{//}{/};
		1235	redo if s{/\.?/}{/};
		1236	redo if s{/[^/]+/\.\./}{/};
		1237	}
		1238
		1239	$path
		1240	}
		1241
		1242	sub new_from_path {
		1243	my (undef, $path, $base) = @_;
		1244
		1245	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1246
		1247	$path = normalise $path, $base;
		1248
		1249	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1250	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1251	my $self = bless cf::map::new, $pkg;
		1252	$self->{path} = $path; $self->path ($path);
		1253	$self->init; # pass $1 etc.
		1254	return $self;
		1255	}
		1256	}
		1257
		1258	Carp::carp "unable to resolve path '$path' (base '$base').";
		1259	()
		1260	}
		1261
		1262	sub init {
		1263	my ($self) = @_;
		1264
		1265	$self
		1266	}
		1267
		1268	sub as_string {
		1269	my ($self) = @_;
		1270
		1271	"$self->{path}"
		1272	}
		1273
		1274	# the displayed name, this is a one way mapping
		1275	sub visible_name {
		1276	&as_string
		1277	}
		1278
		1279	# the original (read-only) location
		1280	sub load_path {
		1281	my ($self) = @_;
		1282
		1283	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1284	}
		1285
		1286	# the temporary/swap location
		1287	sub save_path {
		1288	my ($self) = @_;
		1289
		1290	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1291	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1292	}
		1293
		1294	# the unique path, undef == no special unique path
		1295	sub uniq_path {
		1296	my ($self) = @_;
		1297
		1298	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1299	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1300	}
		1301
		1302	# and all this just because we cannot iterate over
		1303	# all maps in C++...
		1304	sub change_all_map_light {
		1305	my ($change) = @_;
		1306
		1307	$_->change_map_light ($change)
		1308	for grep $_->outdoor, values %cf::MAP;
		1309	}
		1310
		1311	sub unlink_save {
		1312	my ($self) = @_;
		1313
		1314	utf8::encode (my $save = $self->save_path);
		1315	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1316	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1317	}
		1318
		1319	sub load_header_from($) {
		1320	my ($self, $path) = @_;
		1321
		1322	utf8::encode $path;
		1323	#aio_open $path, O_RDONLY, 0
		1324	# or return;
		1325
		1326	$self->_load_header ($path)
		1327	or return;
		1328
		1329	$self->{load_path} = $path;
		1330
		1331	1
		1332	}
		1333
		1334	sub load_header_orig {
		1335	my ($self) = @_;
		1336
		1337	$self->load_header_from ($self->load_path)
		1338	}
		1339
		1340	sub load_header_temp {
		1341	my ($self) = @_;
		1342
		1343	$self->load_header_from ($self->save_path)
		1344	}
		1345
		1346	sub prepare_temp {
		1347	my ($self) = @_;
		1348
		1349	$self->last_access ((delete $self->{last_access})
		1350	|| $cf::RUNTIME); #d#
		1351	# safety
		1352	$self->{instantiate_time} = $cf::RUNTIME
		1353	if $self->{instantiate_time} > $cf::RUNTIME;
		1354	}
		1355
		1356	sub prepare_orig {
		1357	my ($self) = @_;
		1358
		1359	$self->{load_original} = 1;
		1360	$self->{instantiate_time} = $cf::RUNTIME;
		1361	$self->last_access ($cf::RUNTIME);
		1362	$self->instantiate;
		1363	}
		1364
		1365	sub load_header {
		1366	my ($self) = @_;
		1367
		1368	if ($self->load_header_temp) {
		1369	$self->prepare_temp;
		1370	} else {
		1371	$self->load_header_orig
		1372	or return;
		1373	$self->prepare_orig;
		1374	}
		1375
		1376	1
		1377	}
		1378
		1379	sub find;
		1380	sub find {
		1381	my ($path, $origin) = @_;
		1382
		1383	$path = normalise $path, $origin && $origin->path;
		1384
		1385	cf::lock_wait "map_find:$path";
		1386
		1387	$cf::MAP{$path} || do {
		1388	my $guard = cf::lock_acquire "map_find:$path";
		1389	my $map = new_from_path cf::map $path
		1390	or return;
		1391
		1392	$map->{last_save} = $cf::RUNTIME;
		1393
		1394	$map->load_header
		1395	or return;
		1396
		1397	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1398	# doing this can freeze the server in a sync job, obviously
		1399	#$cf::WAIT_FOR_TICK->wait;
		1400	$map->reset;
		1401	undef $guard;
		1402	return find $path;
		1403	}
		1404
		1405	$cf::MAP{$path} = $map
		1406	}
		1407	}
		1408
		1409	sub pre_load { }
		1410	sub post_load { }
		1411
		1412	sub load {
		1413	my ($self) = @_;
		1414
		1415	local $self->{deny_reset} = 1; # loading can take a long time
		1416
		1417	my $path = $self->{path};
		1418	my $guard = cf::lock_acquire "map_load:$path";
		1419
		1420	return if $self->in_memory != cf::MAP_SWAPPED;
		1421
		1422	$self->in_memory (cf::MAP_LOADING);
		1423
		1424	$self->alloc;
		1425
		1426	$self->pre_load;
		1427
		1428	$self->_load_objects ($self->{load_path}, 1)
		1429	or return;
		1430
		1431	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1432	if delete $self->{load_original};
		1433
		1434	if (my $uniq = $self->uniq_path) {
		1435	utf8::encode $uniq;
		1436	if (aio_open $uniq, O_RDONLY, 0) {
		1437	$self->clear_unique_items;
		1438	$self->_load_objects ($uniq, 0);
		1439	}
		1440	}
		1441
		1442	Coro::cede;
		1443
		1444	# now do the right thing for maps
		1445	$self->link_multipart_objects;
		1446
		1447	unless ($self->{deny_activate}) {
		1448	$self->decay_objects;
		1449	$self->fix_auto_apply;
		1450	$self->update_buttons;
		1451	Coro::cede;
		1452	$self->set_darkness_map;
		1453	$self->difficulty ($self->estimate_difficulty)
		1454	unless $self->difficulty;
		1455	Coro::cede;
		1456	$self->activate;
		1457	}
		1458
		1459	$self->post_load;
		1460
		1461	$self->in_memory (cf::MAP_IN_MEMORY);
		1462	}
		1463
		1464	sub customise_for {
706	my ($pl, $buf) = @_;	1465	my ($self, $ob) = @_;
707		1466
708	my $msg = eval { from_json $buf };	1467	return find "~" . $ob->name . "/" . $self->{path}
		1468	if $self->per_player;
709		1469
710	if (ref $msg) {	1470	$self
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1471	}
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1472
713	$pl->ext_reply ($msg->{msgid}, %reply);	1473	# find and load all maps in the 3x3 area around a map
714	}	1474	sub load_diag {
		1475	my ($map) = @_;
		1476
		1477	my @diag; # diagonal neighbours
		1478
		1479	for (0 .. 3) {
		1480	my $neigh = $map->tile_path ($_)
		1481	or next;
		1482	$neigh = find $neigh, $map
		1483	or next;
		1484	$neigh->load;
		1485
		1486	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1487	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1488	}
		1489
		1490	for (@diag) {
		1491	my $neigh = find @$_
		1492	or next;
		1493	$neigh->load;
		1494	}
		1495	}
		1496
		1497	sub find_sync {
		1498	my ($path, $origin) = @_;
		1499
		1500	cf::sync_job { find $path, $origin }
		1501	}
		1502
		1503	sub do_load_sync {
		1504	my ($map) = @_;
		1505
		1506	cf::sync_job { $map->load };
		1507	}
		1508
		1509	our %MAP_PREFETCH;
		1510	our $MAP_PREFETCHER = undef;
		1511
		1512	sub find_async {
		1513	my ($path, $origin) = @_;
		1514
		1515	$path = normalise $path, $origin && $origin->{path};
		1516
		1517	if (my $map = $cf::MAP{$path}) {
		1518	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1519	}
		1520
		1521	undef $MAP_PREFETCH{$path};
		1522	$MAP_PREFETCHER ||= cf::async {
		1523	while (%MAP_PREFETCH) {
		1524	for my $path (keys %MAP_PREFETCH) {
		1525	my $map = find $path
		1526	or next;
		1527	$map->load;
		1528
		1529	delete $MAP_PREFETCH{$path};
715	}	1530	}
		1531	}
		1532	undef $MAP_PREFETCHER;
		1533	};
		1534	$MAP_PREFETCHER->prio (6);
		1535
		1536	()
		1537	}
		1538
		1539	sub save {
		1540	my ($self) = @_;
		1541
		1542	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1543
		1544	$self->{last_save} = $cf::RUNTIME;
		1545
		1546	return unless $self->dirty;
		1547
		1548	my $save = $self->save_path; utf8::encode $save;
		1549	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1550
		1551	$self->{load_path} = $save;
		1552
		1553	return if $self->{deny_save};
		1554
		1555	local $self->{last_access} = $self->last_access;#d#
		1556
		1557	cf::async {
		1558	$_->contr->save for $self->players;
		1559	};
		1560
		1561	if ($uniq) {
		1562	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1563	$self->_save_objects ($uniq, cf::IO_UNIQUES);
716	} else {	1564	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1565	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
718	}
719
720	cf::override;
721	},	1566	}
722	;	1567	}
723		1568
724	#############################################################################	1569	sub swap_out {
725	# load/save/clean perl data associated with a map
726
727	*cf::mapsupport::on_clean = sub {
728	my ($map) = @_;	1570	my ($self) = @_;
729		1571
730	my $path = $map->tmpname;	1572	# save first because save cedes
731	defined $path or return;	1573	$self->save;
732		1574
733	unlink "$path.pst";	1575	my $lock = cf::lock_acquire "map_data:" . $self->path;
734	};
735		1576
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1577	return if $self->players;
		1578	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1579	return if $self->{deny_save};
737		1580
738	#############################################################################	1581	$self->clear;
739	# load/save perl data associated with player->ob objects	1582	$self->in_memory (cf::MAP_SWAPPED);
740
741	sub all_objects(@) {
742	@_, map all_objects ($_->inv), @_
743	}	1583	}
744		1584
745	# TODO: compatibility cruft, remove when no longer needed	1585	sub reset_at {
746	attach_to_players	1586	my ($self) = @_;
747	on_load => sub {
748	my ($pl, $path) = @_;
749		1587
750	for my $o (all_objects $pl->ob) {	1588	# TODO: safety, remove and allow resettable per-player maps
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1589	return 1e99 if $self->isa ("ext::map_per_player");#d#
752	$o->set_ob_key_value ("_perl_data");	1590	return 1e99 if $self->{deny_reset};
753		1591
754	%$o = %{ Storable::thaw pack "H*", $value };	1592	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
755	}	1593	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
756	}	1594
		1595	$time + $to
		1596	}
		1597
		1598	sub should_reset {
		1599	my ($self) = @_;
		1600
		1601	$self->reset_at <= $cf::RUNTIME
		1602	}
		1603
		1604	sub reset {
		1605	my ($self) = @_;
		1606
		1607	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1608
		1609	return if $self->players;
		1610	return if $self->isa ("ext::map_per_player");#d#
		1611
		1612	warn "resetting map ", $self->path;#d#
		1613
		1614	$self->in_memory (cf::MAP_SWAPPED);
		1615
		1616	# need to save uniques path
		1617	unless ($self->{deny_save}) {
		1618	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1619
		1620	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1621	if $uniq;
757	},	1622	}
758	;
759		1623
760	#############################################################################	1624	delete $cf::MAP{$self->path};
761		1625
762	=head2 CORE EXTENSIONS	1626	$self->clear;
763		1627
764	Functions and methods that extend core crossfire objects.	1628	$_->clear_links_to ($self) for values %cf::MAP;
		1629
		1630	$self->unlink_save;
		1631	$self->destroy;
		1632	}
		1633
		1634	my $nuke_counter = "aaaa";
		1635
		1636	sub nuke {
		1637	my ($self) = @_;
		1638
		1639	delete $cf::MAP{$self->path};
		1640
		1641	$self->unlink_save;
		1642
		1643	bless $self, "cf::map";
		1644	delete $self->{deny_reset};
		1645	$self->{deny_save} = 1;
		1646	$self->reset_timeout (1);
		1647	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1648
		1649	$cf::MAP{$self->path} = $self;
		1650
		1651	$self->reset; # polite request, might not happen
		1652	}
		1653
		1654	=item cf::map::unique_maps
		1655
		1656	Returns an arrayref of paths of all shared maps that have
		1657	instantiated unique items. May block.
		1658
		1659	=cut
		1660
		1661	sub unique_maps() {
		1662	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1663	or return;
		1664
		1665	my @paths;
		1666
		1667	for (@$files) {
		1668	utf8::decode $_;
		1669	next if /\.pst$/;
		1670	next unless /^$PATH_SEP/o;
		1671
		1672	push @paths, cf::map::normalise $_;
		1673	}
		1674
		1675	\@paths
		1676	}
		1677
		1678	package cf;
		1679
		1680	=back
		1681
		1682	=head3 cf::object
		1683
		1684	=cut
		1685
		1686	package cf::object;
765		1687
766	=over 4	1688	=over 4
767		1689
768	=item cf::player::exists $login	1690	=item $ob->inv_recursive
769		1691
770	Returns true when the given account exists.	1692	Returns the inventory of the object _and_ their inventories, recursively.
771		1693
772	=cut	1694	=cut
773		1695
774	sub cf::player::exists($) {	1696	sub inv_recursive_;
775	cf::player::find $_[0]	1697	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1698	map { $_, inv_recursive_ $_->inv } @_
777	}	1699	}
778		1700
		1701	sub inv_recursive {
		1702	inv_recursive_ inv $_[0]
		1703	}
		1704
		1705	package cf;
		1706
		1707	=back
		1708
		1709	=head3 cf::object::player
		1710
		1711	=over 4
		1712
779	=item $object->reply ($npc, $msg[, $flags])	1713	=item $player_object->reply ($npc, $msg[, $flags])
780		1714
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1715	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	1716	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	1717	dialogue with the given NPC character.
784		1718
785	=cut	1719	=cut
786		1720
787	# rough implementation of a future "reply" method that works	1721	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	1722	# with dialog boxes.
		1723	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	1724	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	1725	my ($self, $npc, $msg, $flags) = @_;
791		1726
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1727	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		1728
…		…
797	$msg = $npc->name . " says: $msg" if $npc;	1732	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	1733	$self->message ($msg, $flags);
799	}	1734	}
800	}	1735	}
801		1736
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	1737	=item $player_object->may ("access")
803		1738
804	Sends an ext reply to the player.	1739	Returns wether the given player is authorized to access resource "access"
		1740	(e.g. "command_wizcast").
805		1741
806	=cut	1742	=cut
807		1743
808	sub cf::player::ext_reply($$$%) {	1744	sub cf::object::player::may {
		1745	my ($self, $access) = @_;
		1746
		1747	$self->flag (cf::FLAG_WIZ) ||
		1748	(ref $cf::CFG{"may_$access"}
		1749	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1750	: $cf::CFG{"may_$access"})
		1751	}
		1752
		1753	=item $player_object->enter_link
		1754
		1755	Freezes the player and moves him/her to a special map (C<{link}>).
		1756
		1757	The player should be reasonably safe there for short amounts of time. You
		1758	I<MUST> call C<leave_link> as soon as possible, though.
		1759
		1760	Will never block.
		1761
		1762	=item $player_object->leave_link ($map, $x, $y)
		1763
		1764	Moves the player out of the special C<{link}> map onto the specified
		1765	map. If the map is not valid (or omitted), the player will be moved back
		1766	to the location he/she was before the call to C<enter_link>, or, if that
		1767	fails, to the emergency map position.
		1768
		1769	Might block.
		1770
		1771	=cut
		1772
		1773	sub link_map {
		1774	unless ($LINK_MAP) {
		1775	$LINK_MAP = cf::map::find "{link}"
		1776	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1777	$LINK_MAP->load;
		1778	}
		1779
		1780	$LINK_MAP
		1781	}
		1782
		1783	sub cf::object::player::enter_link {
		1784	my ($self) = @_;
		1785
		1786	$self->deactivate_recursive;
		1787
		1788	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1789
		1790	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1791	if $self->map;
		1792
		1793	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1794	}
		1795
		1796	sub cf::object::player::leave_link {
		1797	my ($self, $map, $x, $y) = @_;
		1798
		1799	my $link_pos = delete $self->{_link_pos};
		1800
		1801	unless ($map) {
		1802	# restore original map position
		1803	($map, $x, $y) = @{ $link_pos || [] };
		1804	$map = cf::map::find $map;
		1805
		1806	unless ($map) {
		1807	($map, $x, $y) = @$EMERGENCY_POSITION;
		1808	$map = cf::map::find $map
		1809	or die "FATAL: cannot load emergency map\n";
		1810	}
		1811	}
		1812
		1813	($x, $y) = (-1, -1)
		1814	unless (defined $x) && (defined $y);
		1815
		1816	# use -1 or undef as default coordinates, not 0, 0
		1817	($x, $y) = ($map->enter_x, $map->enter_y)
		1818	if $x <=0 && $y <= 0;
		1819
		1820	$map->load;
		1821	$map->load_diag;
		1822
		1823	return unless $self->contr->active;
		1824	$self->activate_recursive;
		1825
		1826	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1827	$self->enter_map ($map, $x, $y);
		1828	}
		1829
		1830	cf::player->attach (
		1831	on_logout => sub {
		1832	my ($pl) = @_;
		1833
		1834	# abort map switching before logout
		1835	if ($pl->ob->{_link_pos}) {
		1836	cf::sync_job {
		1837	$pl->ob->leave_link
		1838	};
		1839	}
		1840	},
		1841	on_login => sub {
		1842	my ($pl) = @_;
		1843
		1844	# try to abort aborted map switching on player login :)
		1845	# should happen only on crashes
		1846	if ($pl->ob->{_link_pos}) {
		1847	$pl->ob->enter_link;
		1848	(async {
		1849	$pl->ob->reply (undef,
		1850	"There was an internal problem at your last logout, "
		1851	. "the server will try to bring you to your intended destination in a second.",
		1852	cf::NDI_RED);
		1853	# we need this sleep as the login has a concurrent enter_exit running
		1854	# and this sleep increases chances of the player not ending up in scorn
		1855	Coro::Timer::sleep 1;
		1856	$pl->ob->leave_link;
		1857	})->prio (2);
		1858	}
		1859	},
		1860	);
		1861
		1862	=item $player_object->goto ($path, $x, $y)
		1863
		1864	=cut
		1865
		1866	sub cf::object::player::goto {
		1867	my ($self, $path, $x, $y) = @_;
		1868
		1869	$self->enter_link;
		1870
		1871	(async {
		1872	my $map = eval {
		1873	my $map = cf::map::find $path;
		1874	$map = $map->customise_for ($self) if $map;
		1875	$map
		1876	} or
		1877	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1878
		1879	$self->leave_link ($map, $x, $y);
		1880	})->prio (1);
		1881	}
		1882
		1883	=item $player_object->enter_exit ($exit_object)
		1884
		1885	=cut
		1886
		1887	sub parse_random_map_params {
		1888	my ($spec) = @_;
		1889
		1890	my $rmp = { # defaults
		1891	xsize => (cf::rndm 15, 40),
		1892	ysize => (cf::rndm 15, 40),
		1893	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1894	#layout => string,
		1895	};
		1896
		1897	for (split /\n/, $spec) {
		1898	my ($k, $v) = split /\s+/, $_, 2;
		1899
		1900	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1901	}
		1902
		1903	$rmp
		1904	}
		1905
		1906	sub prepare_random_map {
		1907	my ($exit) = @_;
		1908
		1909	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1910
		1911	# all this does is basically replace the /! path by
		1912	# a new random map path (?random/...) with a seed
		1913	# that depends on the exit object
		1914
		1915	my $rmp = parse_random_map_params $exit->msg;
		1916
		1917	if ($exit->map) {
		1918	$rmp->{region} = $exit->region->name;
		1919	$rmp->{origin_map} = $exit->map->path;
		1920	$rmp->{origin_x} = $exit->x;
		1921	$rmp->{origin_y} = $exit->y;
		1922	}
		1923
		1924	$rmp->{random_seed} ||= $exit->random_seed;
		1925
		1926	my $data = cf::to_json $rmp;
		1927	my $md5 = Digest::MD5::md5_hex $data;
		1928	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1929
		1930	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1931	aio_write $fh, 0, (length $data), $data, 0;
		1932	undef $fh;
		1933	aio_rename "$meta~", $meta;
		1934
		1935	$exit->slaying ("?random/$md5");
		1936	$exit->msg (undef);
		1937	}
		1938	}
		1939
		1940	sub cf::object::player::enter_exit {
809	my ($self, $id, %msg) = @_;	1941	my ($self, $exit) = @_;
810		1942
811	$msg{msgid} = $id;	1943	return unless $self->type == cf::PLAYER;
812		1944
813	$self->send ("ext " . to_json \%msg);	1945	if ($exit->slaying eq "/!") {
		1946	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1947	cf::sync_job { prepare_random_map $exit };
		1948	}
		1949
		1950	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1951	my $hp = $exit->stats->hp;
		1952	my $sp = $exit->stats->sp;
		1953
		1954	$self->enter_link;
		1955
		1956	(async {
		1957	$self->deactivate_recursive; # just to be sure
		1958	unless (eval {
		1959	$self->goto ($slaying, $hp, $sp);
		1960
		1961	1;
		1962	}) {
		1963	$self->message ("Something went wrong deep within the crossfire server. "
		1964	. "I'll try to bring you back to the map you were before. "
		1965	. "Please report this to the dungeon master!",
		1966	cf::NDI_UNIQUE | cf::NDI_RED);
		1967
		1968	warn "ERROR in enter_exit: $@";
		1969	$self->leave_link;
		1970	}
		1971	})->prio (1);
814	}	1972	}
		1973
		1974	=head3 cf::client
		1975
		1976	=over 4
		1977
		1978	=item $client->send_drawinfo ($text, $flags)
		1979
		1980	Sends a drawinfo packet to the client. Circumvents output buffering so
		1981	should not be used under normal circumstances.
		1982
		1983	=cut
		1984
		1985	sub cf::client::send_drawinfo {
		1986	my ($self, $text, $flags) = @_;
		1987
		1988	utf8::encode $text;
		1989	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		1990	}
		1991
		1992
		1993	=item $success = $client->query ($flags, "text", \&cb)
		1994
		1995	Queues a query to the client, calling the given callback with
		1996	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1997	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1998
		1999	Queries can fail, so check the return code. Or don't, as queries will become
		2000	reliable at some point in the future.
		2001
		2002	=cut
		2003
		2004	sub cf::client::query {
		2005	my ($self, $flags, $text, $cb) = @_;
		2006
		2007	return unless $self->state == ST_PLAYING
		2008	|| $self->state == ST_SETUP
		2009	|| $self->state == ST_CUSTOM;
		2010
		2011	$self->state (ST_CUSTOM);
		2012
		2013	utf8::encode $text;
		2014	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2015
		2016	$self->send_packet ($self->{query_queue}[0][0])
		2017	if @{ $self->{query_queue} } == 1;
		2018	}
		2019
		2020	cf::client->attach (
		2021	on_reply => sub {
		2022	my ($ns, $msg) = @_;
		2023
		2024	# this weird shuffling is so that direct followup queries
		2025	# get handled first
		2026	my $queue = delete $ns->{query_queue}
		2027	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2028
		2029	(shift @$queue)->[1]->($msg);
		2030	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2031
		2032	push @{ $ns->{query_queue} }, @$queue;
		2033
		2034	if (@{ $ns->{query_queue} } == @$queue) {
		2035	if (@$queue) {
		2036	$ns->send_packet ($ns->{query_queue}[0][0]);
		2037	} else {
		2038	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2039	}
		2040	}
		2041	},
		2042	);
		2043
		2044	=item $client->async (\&cb)
		2045
		2046	Create a new coroutine, running the specified callback. The coroutine will
		2047	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2048	or loss of connection).
		2049
		2050	=cut
		2051
		2052	sub cf::client::async {
		2053	my ($self, $cb) = @_;
		2054
		2055	my $coro = &Coro::async ($cb);
		2056
		2057	$coro->on_destroy (sub {
		2058	delete $self->{_coro}{$coro+0};
		2059	});
		2060
		2061	$self->{_coro}{$coro+0} = $coro;
		2062
		2063	$coro
		2064	}
		2065
		2066	cf::client->attach (
		2067	on_destroy => sub {
		2068	my ($ns) = @_;
		2069
		2070	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2071	},
		2072	);
815		2073
816	=back	2074	=back
817		2075
818	=cut
819
820	#############################################################################
821		2076
822	=head2 SAFE SCRIPTING	2077	=head2 SAFE SCRIPTING
823		2078
824	Functions that provide a safe environment to compile and execute	2079	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	2080	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	2081	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	2082	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	2083	functions and methods that can be called is greatly reduced.
829		2084
830	=cut	2085	=cut
831		2086
832	our $safe = new Safe "safe";	2087	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	2088	our $safe_hole = new Safe::Hole;
…		…
838		2093
839	# here we export the classes and methods available to script code	2094	# here we export the classes and methods available to script code
840		2095
841	=pod	2096	=pod
842		2097
843	The following fucntions and emthods are available within a safe environment:	2098	The following functions and methods are available within a safe environment:
844		2099
845	cf::object contr pay_amount pay_player	2100	cf::object contr pay_amount pay_player map
846	cf::object::player player	2101	cf::object::player player
847	cf::player peaceful	2102	cf::player peaceful
		2103	cf::map trigger
848		2104
849	=cut	2105	=cut
850		2106
851	for (	2107	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	2108	["cf::object" => qw(contr pay_amount pay_player map)],
853	["cf::object::player" => qw(player)],	2109	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	2110	["cf::player" => qw(peaceful)],
		2111	["cf::map" => qw(trigger)],
855	) {	2112	) {
856	no strict 'refs';	2113	no strict 'refs';
857	my ($pkg, @funs) = @$_;	2114	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2115	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	2116	for @funs;
…		…
939	The parameter C<$family> should best start with the name of the extension	2196	The parameter C<$family> should best start with the name of the extension
940	using it, it should be unique.	2197	using it, it should be unique.
941		2198
942	=over 4	2199	=over 4
943		2200
944	=item $hashref = cf::db_get $family
945
946	Return a hashref for use by the extension C<$family>, which can be
947	modified. After modifications, you have to call C<cf::db_dirty> or
948	C<cf::db_sync>.
949
950	=item $value = cf::db_get $family => $key	2201	=item $value = cf::db_get $family => $key
951		2202
952	Returns a single value from the database	2203	Returns a single value from the database.
953
954	=item cf::db_put $family => $hashref
955
956	Stores the given family hashref into the database. Updates are delayed, if
957	you want the data to be synced to disk immediately, use C<cf::db_sync>.
958		2204
959	=item cf::db_put $family => $key => $value	2205	=item cf::db_put $family => $key => $value
960		2206
961	Stores the given C<$value> in the family hash. Updates are delayed, if you	2207	Stores the given C<$value> in the family.
962	want the data to be synced to disk immediately, use C<cf::db_sync>.
963		2208
964	=item cf::db_dirty
965
966	Marks the database as dirty, to be updated at a later time.
967
968	=item cf::db_sync
969
970	Immediately write the database to disk I<if it is dirty>.
971
972	=cut	2209	=cut
973		2210
974	{	2211	our $DB;
975	my $db;	2212
		2213	sub db_init {
		2214	unless ($DB) {
		2215	$DB = BDB::db_create $DB_ENV;
		2216
		2217	cf::sync_job {
		2218	eval {
		2219	$DB->set_flags (BDB::CHKSUM);
		2220
		2221	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2222	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2223	cf::cleanup "db_open(db): $!" if $!;
		2224	};
		2225	cf::cleanup "db_open(db): $@" if $@;
		2226	};
		2227
976	my $path = cf::localdir . "/database.pst";	2228	my $path = cf::localdir . "/database.pst";
		2229	if (stat $path) {
		2230	cf::sync_job {
		2231	my $pst = Storable::retrieve $path;
977		2232
978	sub db_load() {	2233	cf::db_put (board => data => $pst->{board});
979	warn "loading database $path\n";#d# remove later	2234	cf::db_put (guildrules => data => $pst->{guildrules});
980	$db = stat $path ? Storable::retrieve $path : { };	2235	cf::db_put (rent => balance => $pst->{rent}{balance});
981	}	2236	BDB::db_env_txn_checkpoint $DB_ENV;
982		2237
983	my $pid;	2238	unlink $path;
984
985	sub db_save() {
986	warn "saving database $path\n";#d# remove later
987	waitpid $pid, 0 if $pid;
988	if (0 == ($pid = fork)) {
989	$db->{_meta}{version} = 1;
990	Storable::nstore $db, "$path~";
991	rename "$path~", $path;
992	cf::_exit 0 if defined $pid;
993	}	2239	};
994	}	2240	}
995
996	my $dirty;
997
998	sub db_sync() {
999	db_save if $dirty;
1000	undef $dirty;
1001	}
1002
1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1004	db_sync;
1005	});	2241	}
		2242	}
1006		2243
1007	sub db_dirty() {
1008	$dirty = 1;
1009	$idle->start;
1010	}
1011
1012	sub db_get($;$) {	2244	sub db_get($$) {
1013	@_ >= 2	2245	my $key = "$_[0]/$_[1]";
1014	? $db->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })
1016	}
1017		2246
		2247	cf::sync_job {
		2248	BDB::db_get $DB, undef, $key, my $data;
		2249
		2250	$! ? ()
		2251	: Compress::LZF::sthaw $data
		2252	}
		2253	}
		2254
1018	sub db_put($$;$) {	2255	sub db_put($$$) {
1019	if (@_ >= 3) {	2256	BDB::dbreq_pri 4;
1020	$db->{$_[0]}{$_[1]} = $_[2];	2257	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2258	}
		2259
		2260	#############################################################################
		2261	# the server's init and main functions
		2262
		2263	sub load_faces {
		2264	my $path = sprintf "%s/faces", cf::datadir;
		2265
		2266	warn "loading faces from $path\n";
		2267
		2268	my $faces;
		2269	0 < aio_load $path, $faces
		2270	or die "$path: $!";
		2271
		2272	Coro::cede;
		2273	$faces = Storable::thaw $faces;
		2274	Coro::cede;
		2275
		2276	my $meta = delete $faces->{""};
		2277	$meta->{version} == 1
		2278	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2279
		2280	while (my ($face, $info) = each %$faces) {
		2281	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2282	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2283	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2284	Coro::cede;
		2285	}
		2286
		2287	while (my ($face, $info) = each %$faces) {
		2288	next unless $info->{smooth};
		2289	my $idx = cf::face::find $face
		2290	or next;
		2291	if (my $smooth = cf::face::find $info->{smooth}) {
		2292	cf::face::set_smooth $idx, $smooth;
1021	} else {	2293	} else {
1022	$db->{$_[0]} = $_[1];	2294	warn "smooth face '$info->{smooth}' not found for face '$face'";
1023	}
1024	db_dirty;
1025	}
1026
1027	attach_global
1028	prio => 10000,
1029	on_cleanup => sub {
1030	db_sync;
1031	},	2295	}
		2296	Coro::cede;
1032	;	2297	}
1033	}
1034		2298
1035	#############################################################################	2299	1
1036	# the server's main()	2300	}
		2301
		2302	sub reload_resources {
		2303	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2304	or die "unable to load regions file\n";#d#
		2305	load_faces
		2306	or die "unable to load faces\n";#d#
		2307	}
		2308
		2309	sub init {
		2310	reload_resources;
		2311	}
1037		2312
1038	sub cfg_load {	2313	sub cfg_load {
1039	open my $fh, "<:utf8", cf::confdir . "/config"	2314	open my $fh, "<:utf8", cf::confdir . "/config"
1040	or return;	2315	or return;
1041		2316
1042	local $/;	2317	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	2318	*CFG = YAML::Syck::Load <$fh>;
		2319
		2320	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2321
		2322	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2323	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2324
		2325	if (exists $CFG{mlockall}) {
		2326	eval {
		2327	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2328	and die "WARNING: m(un)lockall failed: $!\n";
		2329	};
		2330	warn $@ if $@;
		2331	}
1044	}	2332	}
1045		2333
1046	sub main {	2334	sub main {
		2335	# we must not ever block the main coroutine
		2336	local $Coro::idle = sub {
		2337	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2338	(async {
		2339	Event::one_event;
		2340	})->prio (Coro::PRIO_MAX);
		2341	};
		2342
1047	cfg_load;	2343	cfg_load;
1048	db_load;	2344	db_init;
1049	load_extensions;	2345	load_extensions;
		2346
		2347	$TICK_WATCHER->start;
1050	Event::loop;	2348	Event::loop;
1051	}	2349	}
1052		2350
1053	#############################################################################	2351	#############################################################################
1054	# initialisation	2352	# initialisation and cleanup
1055		2353
		2354	# install some emergency cleanup handlers
		2355	BEGIN {
		2356	for my $signal (qw(INT HUP TERM)) {
		2357	Event->signal (
		2358	reentrant => 0,
		2359	data => WF_AUTOCANCEL,
		2360	signal => $signal,
		2361	prio => 0,
		2362	cb => sub {
		2363	cf::cleanup "SIG$signal";
		2364	},
		2365	);
		2366	}
		2367	}
		2368
		2369	sub emergency_save() {
		2370	my $freeze_guard = cf::freeze_mainloop;
		2371
		2372	warn "enter emergency perl save\n";
		2373
		2374	cf::sync_job {
		2375	# use a peculiar iteration method to avoid tripping on perl
		2376	# refcount bugs in for. also avoids problems with players
		2377	# and maps saved/destroyed asynchronously.
		2378	warn "begin emergency player save\n";
		2379	for my $login (keys %cf::PLAYER) {
		2380	my $pl = $cf::PLAYER{$login} or next;
		2381	$pl->valid or next;
		2382	$pl->save;
		2383	}
		2384	warn "end emergency player save\n";
		2385
		2386	warn "begin emergency map save\n";
		2387	for my $path (keys %cf::MAP) {
		2388	my $map = $cf::MAP{$path} or next;
		2389	$map->valid or next;
		2390	$map->save;
		2391	}
		2392	warn "end emergency map save\n";
		2393
		2394	warn "begin emergency database checkpoint\n";
		2395	BDB::db_env_txn_checkpoint $DB_ENV;
		2396	warn "end emergency database checkpoint\n";
		2397	};
		2398
		2399	warn "leave emergency perl save\n";
		2400	}
		2401
		2402	sub post_cleanup {
		2403	my ($make_core) = @_;
		2404
		2405	warn Carp::longmess "post_cleanup backtrace"
		2406	if $make_core;
		2407	}
		2408
1056	sub _perl_reload(&) {	2409	sub reload() {
1057	my ($msg) = @_;	2410	# can/must only be called in main
		2411	if ($Coro::current != $Coro::main) {
		2412	warn "can only reload from main coroutine";
		2413	return;
		2414	}
1058		2415
1059	$msg->("reloading...");	2416	warn "reloading...";
1060		2417
1061	eval {	2418	warn "entering sync_job";
1062	# cancel all watchers	2419
		2420	cf::sync_job {
		2421	cf::write_runtime; # external watchdog should not bark
		2422	cf::emergency_save;
		2423	cf::write_runtime; # external watchdog should not bark
		2424
		2425	warn "syncing database to disk";
		2426	BDB::db_env_txn_checkpoint $DB_ENV;
		2427
		2428	# if anything goes wrong in here, we should simply crash as we already saved
		2429
		2430	warn "cancelling all WF_AUTOCANCEL watchers";
1063	$_->cancel for Event::all_watchers;	2431	for (Event::all_watchers) {
		2432	$_->cancel if $_->data & WF_AUTOCANCEL;
		2433	}
1064		2434
1065	# unload all extensions	2435	warn "flushing outstanding aio requests";
1066	for (@exts) {	2436	for (;;) {
1067	$msg->("unloading <$_>");	2437	BDB::flush;
1068	unload_extension $_;	2438	IO::AIO::flush;
		2439	Coro::cede;
		2440	last unless IO::AIO::nreqs || BDB::nreqs;
		2441	warn "iterate...";
		2442	}
		2443
		2444	++$RELOAD;
		2445
		2446	warn "cancelling all extension coros";
		2447	$_->cancel for values %EXT_CORO;
		2448	%EXT_CORO = ();
		2449
		2450	warn "removing commands";
		2451	%COMMAND = ();
		2452
		2453	warn "removing ext commands";
		2454	%EXTCMD = ();
		2455
		2456	warn "unloading/nuking all extensions";
		2457	for my $pkg (@EXTS) {
		2458	warn "... unloading $pkg";
		2459
		2460	if (my $cb = $pkg->can ("unload")) {
		2461	eval {
		2462	$cb->($pkg);
		2463	1
		2464	} or warn "$pkg unloaded, but with errors: $@";
1069	}	2465	}
1070		2466
		2467	warn "... nuking $pkg";
		2468	Symbol::delete_package $pkg;
		2469	}
		2470
1071	# unload all modules loaded from $LIBDIR	2471	warn "unloading all perl modules loaded from $LIBDIR";
1072	while (my ($k, $v) = each %INC) {	2472	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2473	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		2474
1075	$msg->("removing <$k>");	2475	warn "... unloading $k";
1076	delete $INC{$k};	2476	delete $INC{$k};
1077		2477
1078	$k =~ s/\.pm$//;	2478	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	2479	$k =~ s/\//::/g;
1080		2480
…		…
1083	}	2483	}
1084		2484
1085	Symbol::delete_package $k;	2485	Symbol::delete_package $k;
1086	}	2486	}
1087		2487
1088	# sync database to disk
1089	cf::db_sync;
1090
1091	# get rid of safe::, as good as possible	2488	warn "getting rid of safe::, as good as possible";
1092	Symbol::delete_package "safe::$_"	2489	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2490	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		2491
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"	2492	warn "unloading cf.pm \"a bit\"";
1099	delete $INC{"cf.pm"};	2493	delete $INC{"cf.pm"};
1100		2494
1101	# don't, removes xs symbols, too,	2495	# don't, removes xs symbols, too,
1102	# and global variables created in xs	2496	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	2497	#Symbol::delete_package __PACKAGE__;
1104		2498
1105	# reload cf.pm	2499	warn "unload completed, starting to reload now";
		2500
1106	$msg->("reloading cf.pm");	2501	warn "reloading cf.pm";
1107	require cf;	2502	require cf;
		2503	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		2504
1109	# load config and database again	2505	warn "loading config and database again";
1110	cf::cfg_load;	2506	cf::cfg_load;
1111	cf::db_load;
1112		2507
1113	# load extensions	2508	warn "loading extensions";
1114	$msg->("load extensions");
1115	cf::load_extensions;	2509	cf::load_extensions;
1116		2510
1117	# reattach attachments to objects	2511	warn "reattaching attachments to objects/players";
1118	$msg->("reattach");	2512	_global_reattach; # objects, sockets
1119	_global_reattach;	2513	warn "reattaching attachments to maps";
		2514	reattach $_ for values %MAP;
		2515	warn "reattaching attachments to players";
		2516	reattach $_ for values %PLAYER;
		2517
		2518	warn "loading reloadable resources";
		2519	reload_resources;
		2520
		2521	warn "leaving sync_job";
		2522
		2523	1
		2524	} or do {
		2525	warn $@;
		2526	warn "error while reloading, exiting.";
		2527	exit 1;
1120	};	2528	};
1121	$msg->($@) if $@;
1122		2529
1123	$msg->("reloaded");	2530	warn "reloaded";
1124	};	2531	};
1125		2532
1126	sub perl_reload() {	2533	our $RELOAD_WATCHER; # used only during reload
1127	_perl_reload {
1128	warn $_[0];
1129	print "$_[0]\n";
1130	};
1131	}
1132		2534
1133	register_command "perl-reload", 0, sub {	2535	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	2536	my ($who, $arg) = @_;
1135		2537
1136	if ($who->flag (FLAG_WIZ)) {	2538	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	2539	$who->message ("reloading server.");
1138	warn $_[0];	2540
1139	$who->message ($_[0]);	2541	# doing reload synchronously and two reloads happen back-to-back,
		2542	# coro crashes during coro_state_free->destroy here.
		2543
		2544	$RELOAD_WATCHER ||= Event->timer (
		2545	reentrant => 0,
		2546	after => 0,
		2547	data => WF_AUTOCANCEL,
		2548	cb => sub {
		2549	reload;
		2550	undef $RELOAD_WATCHER;
		2551	},
1140	};	2552	);
1141	}	2553	}
1142	};	2554	};
1143		2555
1144	register "<global>", __PACKAGE__;
1145
1146	unshift @INC, $LIBDIR;	2556	unshift @INC, $LIBDIR;
1147		2557
		2558	my $bug_warning = 0;
		2559
1148	$TICK_WATCHER = Event->timer (	2560	$TICK_WATCHER = Event->timer (
		2561	reentrant => 0,
		2562	parked => 1,
1149	prio => 1,	2563	prio => 0,
1150	at => $NEXT_TICK || 1,	2564	at => $NEXT_TICK || $TICK,
		2565	data => WF_AUTOCANCEL,
1151	cb => sub {	2566	cb => sub {
		2567	if ($Coro::current != $Coro::main) {
		2568	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2569	unless ++$bug_warning > 10;
		2570	return;
		2571	}
		2572
		2573	$NOW = Event::time;
		2574
1152	cf::server_tick; # one server iteration	2575	cf::server_tick; # one server iteration
1153		2576	$RUNTIME += $TICK;
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;	2577	$NEXT_TICK += $TICK;
1156		2578
		2579	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2580	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2581	Coro::async_pool {
		2582	write_runtime
		2583	or warn "ERROR: unable to write runtime file: $!";
		2584	};
		2585	}
		2586
		2587	$WAIT_FOR_TICK->broadcast;
		2588	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2589
		2590	# my $AFTER = Event::time;
		2591	# warn $AFTER - $NOW;#d#
		2592
1157	# if we are delayed by four ticks, skip them all	2593	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2594	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1159		2595
1160	$TICK_WATCHER->at ($NEXT_TICK);	2596	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	2597	$TICK_WATCHER->start;
1162	},	2598	},
1163	);	2599	);
1164		2600
		2601	{
		2602	BDB::max_poll_time $TICK * 0.1;
		2603	$BDB_POLL_WATCHER = Event->io (
		2604	reentrant => 0,
		2605	fd => BDB::poll_fileno,
		2606	poll => 'r',
		2607	prio => 0,
		2608	data => WF_AUTOCANCEL,
		2609	cb => \&BDB::poll_cb,
		2610	);
		2611	BDB::min_parallel 8;
		2612
		2613	BDB::set_sync_prepare {
		2614	my $status;
		2615	my $current = $Coro::current;
		2616	(
		2617	sub {
		2618	$status = $!;
		2619	$current->ready; undef $current;
		2620	},
		2621	sub {
		2622	Coro::schedule while defined $current;
		2623	$! = $status;
		2624	},
		2625	)
		2626	};
		2627
		2628	unless ($DB_ENV) {
		2629	$DB_ENV = BDB::db_env_create;
		2630
		2631	cf::sync_job {
		2632	eval {
		2633	BDB::db_env_open
		2634	$DB_ENV,
		2635	$BDB_ENV_DIR,
		2636	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2637	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2638	0666;
		2639
		2640	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2641
		2642	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2643	$DB_ENV->set_lk_detect;
		2644	};
		2645
		2646	cf::cleanup "db_env_open(db): $@" if $@;
		2647	};
		2648	}
		2649	}
		2650
		2651	{
		2652	IO::AIO::min_parallel 8;
		2653
		2654	undef $Coro::AIO::WATCHER;
		2655	IO::AIO::max_poll_time $TICK * 0.1;
		2656	$AIO_POLL_WATCHER = Event->io (
		2657	reentrant => 0,
		2658	data => WF_AUTOCANCEL,
		2659	fd => IO::AIO::poll_fileno,
		2660	poll => 'r',
		2661	prio => 6,
		2662	cb => \&IO::AIO::poll_cb,
		2663	);
		2664	}
		2665
		2666	END { cf::emergency_save }
		2667
1165	1	2668	1
1166		2669

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