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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 1.237 by root, Fri Apr 13 05:08:51 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	use Coro::Storable;
		22
		23	use BDB ();
		24	use Data::Dumper;
		25	use Digest::MD5;
		26	use Fcntl;
10	use YAML::Syck ();	27	use YAML::Syck ();
		28	use IO::AIO 2.32 ();
11	use Time::HiRes;	29	use Time::HiRes;
12	use Event;	30	use Compress::LZF;
		31
		32	# configure various modules to our taste
		33	#
		34	$Storable::canonical = 1; # reduce rsync transfers
		35	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		36	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		37
13	$Event::Eval = 1; # no idea why this is required, but it is	38	$Event::Eval = 1; # no idea why this is required, but it is
14		39
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	40	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
16	$YAML::Syck::ImplicitUnicode = 1;	41	$YAML::Syck::ImplicitUnicode = 1;
17		42
18	use strict;	43	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		44
20	_init_vars;	45	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		46
22	our %COMMAND = ();	47	our %COMMAND = ();
		48	our %COMMAND_TIME = ();
		49
		50	our @EXTS = (); # list of extension package names
		51	our %EXTCMD = ();
		52	our %EXT_CORO = (); # coroutines bound to extensions
		53	our %EXT_MAP = (); # pluggable maps
		54
		55	our $RELOAD; # number of reloads so far
23	our @EVENT;	56	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	57	our $LIBDIR = datadir . "/ext";
25		58
26	our $TICK = MAX_TIME * 1e-6;	59	our $TICK = MAX_TIME * 1e-6;
27	our $TICK_WATCHER;	60	our $TICK_WATCHER;
		61	our $AIO_POLL_WATCHER;
		62	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	our $NEXT_TICK;	63	our $NEXT_TICK;
		64	our $NOW;
		65	our $USE_FSYNC = 1; # use fsync to write maps - default off
		66
		67	our $BDB_POLL_WATCHER;
		68	our $DB_ENV;
29		69
30	our %CFG;	70	our %CFG;
31		71
32	our $uptime;	72	our $UPTIME; $UPTIME ||= time;
		73	our $RUNTIME;
33		74
34	$uptime ||= time;	75	our %PLAYER; # all users
		76	our %MAP; # all maps
		77	our $LINK_MAP; # the special {link} map, which is always available
		78	our $RANDOM_MAPS = cf::localdir . "/random";
		79	our $BDB_ENV_DIR = cf::localdir . "/db";
		80
		81	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		82	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		83
		84	# used to convert map paths into valid unix filenames by replacing / by ∕
		85	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		86
		87	binmode STDOUT;
		88	binmode STDERR;
		89
		90	# read virtual server time, if available
		91	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		92	open my $fh, "<", cf::localdir . "/runtime"
		93	or die "unable to read runtime file: $!";
		94	$RUNTIME = <$fh> + 0.;
		95	}
		96
		97	mkdir cf::localdir;
		98	mkdir cf::localdir . "/" . cf::playerdir;
		99	mkdir cf::localdir . "/" . cf::tmpdir;
		100	mkdir cf::localdir . "/" . cf::uniquedir;
		101	mkdir $RANDOM_MAPS;
		102	mkdir $BDB_ENV_DIR;
		103
		104	our $EMERGENCY_POSITION;
		105
		106	sub cf::map::normalise;
35		107
36	#############################################################################	108	#############################################################################
37		109
38	=head2 GLOBAL VARIABLES	110	=head2 GLOBAL VARIABLES
39		111
40	=over 4	112	=over 4
		113
		114	=item $cf::UPTIME
		115
		116	The timestamp of the server start (so not actually an uptime).
		117
		118	=item $cf::RUNTIME
		119
		120	The time this server has run, starts at 0 and is increased by $cf::TICK on
		121	every server tick.
41		122
42	=item $cf::LIBDIR	123	=item $cf::LIBDIR
43		124
44	The perl library directory, where extensions and cf-specific modules can	125	The perl library directory, where extensions and cf-specific modules can
45	be found. It will be added to C<@INC> automatically.	126	be found. It will be added to C<@INC> automatically.
46		127
		128	=item $cf::NOW
		129
		130	The time of the last (current) server tick.
		131
47	=item $cf::TICK	132	=item $cf::TICK
48		133
49	The interval between server ticks, in seconds.	134	The interval between server ticks, in seconds.
50		135
51	=item %cf::CFG	136	=item %cf::CFG
52		137
53	Configuration for the server, loaded from C</etc/crossfire/config>, or	138	Configuration for the server, loaded from C</etc/crossfire/config>, or
54	from wherever your confdir points to.	139	from wherever your confdir points to.
		140
		141	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		142
		143	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		144	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		145	processing has been done. Call C<< ->wait >> on them to maximise the
		146	window of cpu time available, or simply to synchronise to the server tick.
55		147
56	=back	148	=back
57		149
58	=cut	150	=cut
59		151
60	BEGIN {	152	BEGIN {
61	*CORE::GLOBAL::warn = sub {	153	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	154	my $msg = join "", @_;
		155	utf8::encode $msg;
		156
63	$msg .= "\n"	157	$msg .= "\n"
64	unless $msg =~ /\n$/;	158	unless $msg =~ /\n$/;
65		159
66	print STDERR "cfperl: $msg";
67	LOG llevError, "cfperl: $msg";	160	LOG llevError, $msg;
68	};	161	};
69	}	162	}
70		163
		164	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		165	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		166	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		167	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		168	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	169	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		170
73	# we bless all objects into (empty) derived classes to force a method lookup	171	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	172	# 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)) {	173	for my $pkg (qw(
		174	cf::global cf::attachable
		175	cf::object cf::object::player
		176	cf::client cf::player
		177	cf::arch cf::living
		178	cf::map cf::party cf::region
		179	)) {
76	no strict 'refs';	180	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	181	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	182	}
79		183
80	$Event::DIED = sub {	184	$Event::DIED = sub {
81	warn "error in event callback: @_";	185	warn "error in event callback: @_";
82	};	186	};
83		187
84	my %ext_pkg;
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89
90	=head2 UTILITY FUNCTIONS	188	=head2 UTILITY FUNCTIONS
91		189
92	=over 4	190	=over 4
93		191
94	=cut	192	=item dumpval $ref
95		193
		194	=cut
		195
		196	sub dumpval {
		197	eval {
		198	local $SIG{__DIE__};
		199	my $d;
		200	if (1) {
		201	$d = new Data::Dumper([$_[0]], ["*var"]);
		202	$d->Terse(1);
		203	$d->Indent(2);
		204	$d->Quotekeys(0);
		205	$d->Useqq(1);
		206	#$d->Bless(...);
		207	$d->Seen($_[1]) if @_ > 1;
		208	$d = $d->Dump();
		209	}
		210	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		211	$d
		212	} || "[unable to dump $_[0]: '$@']";
		213	}
		214
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	215	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
97		216
98	=item $ref = cf::from_json $json	217	=item $ref = cf::from_json $json
99		218
100	Converts a JSON string into the corresponding perl data structure.	219	Converts a JSON string into the corresponding perl data structure.
101		220
102	=cut
103
104	sub from_json($) {
105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
106	JSON::Syck::Load $_[0]
107	}
108
109	=item $json = cf::to_json $ref	221	=item $json = cf::to_json $ref
110		222
111	Converts a perl data structure into its JSON representation.	223	Converts a perl data structure into its JSON representation.
112		224
113	=cut	225	=item cf::lock_wait $string
114		226
115	sub to_json($) {	227	Wait until the given lock is available. See cf::lock_acquire.
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	228
117	JSON::Syck::Dump $_[0]	229	=item my $lock = cf::lock_acquire $string
		230
		231	Wait until the given lock is available and then acquires it and returns
		232	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		233	for example when the coroutine gets canceled), the lock is automatically
		234	returned.
		235
		236	Lock names should begin with a unique identifier (for example, cf::map::find
		237	uses map_find and cf::map::load uses map_load).
		238
		239	=cut
		240
		241	our %LOCK;
		242
		243	sub lock_wait($) {
		244	my ($key) = @_;
		245
		246	# wait for lock, if any
		247	while ($LOCK{$key}) {
		248	push @{ $LOCK{$key} }, $Coro::current;
		249	Coro::schedule;
		250	}
		251	}
		252
		253	sub lock_acquire($) {
		254	my ($key) = @_;
		255
		256	# wait, to be sure we are not locked
		257	lock_wait $key;
		258
		259	$LOCK{$key} = [];
		260
		261	Coro::guard {
		262	# wake up all waiters, to be on the safe side
		263	$_->ready for @{ delete $LOCK{$key} };
		264	}
		265	}
		266
		267	sub freeze_mainloop {
		268	return unless $TICK_WATCHER->is_active;
		269
		270	my $guard = Coro::guard {
		271	$TICK_WATCHER->start;
		272	};
		273	$TICK_WATCHER->stop;
		274	$guard
		275	}
		276
		277	=item cf::async { BLOCK }
		278
		279	Currently the same as Coro::async_pool, meaning you cannot use
		280	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		281	thing you are allowed to do is call C<prio> on it.
		282
		283	=cut
		284
		285	BEGIN { *async = \&Coro::async_pool }
		286
		287	=item cf::sync_job { BLOCK }
		288
		289	The design of crossfire+ requires that the main coro ($Coro::main) is
		290	always able to handle events or runnable, as crossfire+ is only partly
		291	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		292
		293	If it must be done, put the blocking parts into C<sync_job>. This will run
		294	the given BLOCK in another coroutine while waiting for the result. The
		295	server will be frozen during this time, so the block should either finish
		296	fast or be very important.
		297
		298	=cut
		299
		300	sub sync_job(&) {
		301	my ($job) = @_;
		302
		303	if ($Coro::current == $Coro::main) {
		304	# this is the main coro, too bad, we have to block
		305	# till the operation succeeds, freezing the server :/
		306
		307	# TODO: use suspend/resume instead
		308	# (but this is cancel-safe)
		309	my $freeze_guard = freeze_mainloop;
		310
		311	my $busy = 1;
		312	my @res;
		313
		314	(async {
		315	@res = eval { $job->() };
		316	warn $@ if $@;
		317	undef $busy;
		318	})->prio (Coro::PRIO_MAX);
		319
		320	while ($busy) {
		321	Coro::cede or Event::one_event;
		322	}
		323
		324	wantarray ? @res : $res[0]
		325	} else {
		326	# we are in another coroutine, how wonderful, everything just works
		327
		328	$job->()
		329	}
		330	}
		331
		332	=item $coro = cf::async_ext { BLOCK }
		333
		334	Like async, but this coro is automatically being canceled when the
		335	extension calling this is being unloaded.
		336
		337	=cut
		338
		339	sub async_ext(&) {
		340	my $cb = shift;
		341
		342	my $coro = &Coro::async ($cb);
		343
		344	$coro->on_destroy (sub {
		345	delete $EXT_CORO{$coro+0};
		346	});
		347	$EXT_CORO{$coro+0} = $coro;
		348
		349	$coro
		350	}
		351
		352	sub write_runtime {
		353	my $guard = cf::lock_acquire "write_runtime";
		354
		355	my $runtime = cf::localdir . "/runtime";
		356
		357	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		358	or return;
		359
		360	my $value = $cf::RUNTIME + 90 + 10;
		361	# 10 is the runtime save interval, for a monotonic clock
		362	# 60 allows for the watchdog to kill the server.
		363
		364	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		365	and return;
		366
		367	# always fsync - this file is important
		368	aio_fsync $fh
		369	and return;
		370
		371	close $fh
		372	or return;
		373
		374	aio_rename "$runtime~", $runtime
		375	and return;
		376
		377	1
		378	}
		379
		380	=item cf::datalog type => key => value, ...
		381
		382	Log a datalog packet of the given type with the given key-value pairs.
		383
		384	=cut
		385
		386	sub datalog($@) {
		387	my ($type, %kv) = @_;
		388	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
118	}	389	}
119		390
120	=back	391	=back
121		392
122	=cut	393	=cut
123		394
124	#############################################################################	395	#############################################################################
125		396
126	=head2 EVENTS AND OBJECT ATTACHMENTS	397	=head2 ATTACHABLE OBJECTS
		398
		399	Many objects in crossfire are so-called attachable objects. That means you can
		400	attach callbacks/event handlers (a collection of which is called an "attachment")
		401	to it. All such attachable objects support the following methods.
		402
		403	In the following description, CLASS can be any of C<global>, C<object>
		404	C<player>, C<client> or C<map> (i.e. the attachable objects in
		405	crossfire+).
127		406
128	=over 4	407	=over 4
129		408
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...)	409	=item $attachable->attach ($attachment, key => $value...)
143		410
144	=item $map->detach ($attachment)	411	=item $attachable->detach ($attachment)
145		412
146	Attach/detach a pre-registered attachment to a map.	413	Attach/detach a pre-registered attachment to a specific object and give it
		414	the specified key/value pairs as arguments.
147		415
148	=item $bool = $object->attached ($name)	416	Example, attach a minesweeper attachment to the given object, making it a
		417	10x10 minesweeper game:
149		418
150	=item $bool = $player->attached ($name)	419	$obj->attach (minesweeper => width => 10, height => 10);
151		420
152	=item $bool = $map->attached ($name)	421	=item $bool = $attachable->attached ($name)
153		422
154	Checks wether the named attachment is currently attached to the object.	423	Checks wether the named attachment is currently attached to the object.
155		424
156	=item cf::attach_global ...	425	=item cf::CLASS->attach ...
157		426
158	Attach handlers for global events.	427	=item cf::CLASS->detach ...
159		428
160	This and all following C<attach_*>-functions expect any number of the	429	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	430	CLASS. See the next function for an explanation of its arguments.
		431
		432	You can attach to global events by using the C<cf::global> class.
		433
		434	Example, log all player logins:
		435
		436	cf::player->attach (
		437	on_login => sub {
		438	my ($pl) = @_;
		439	...
		440	},
		441	);
		442
		443	Example, attach to the jeweler skill:
		444
		445	cf::object->attach (
		446	type => cf::SKILL,
		447	subtype => cf::SK_JEWELER,
		448	on_use_skill => sub {
		449	my ($sk, $ob, $part, $dir, $msg) = @_;
		450	...
		451	},
		452	);
		453
		454	=item cf::CLASS::attachment $name, ...
		455
		456	Register an attachment by C<$name> through which attachable objects of the
		457	given CLASS can refer to this attachment.
		458
		459	Some classes such as crossfire maps and objects can specify attachments
		460	that are attached at load/instantiate time, thus the need for a name.
		461
		462	These calls expect any number of the following handler/hook descriptions:
162		463
163	=over 4	464	=over 4
164		465
165	=item prio => $number	466	=item prio => $number
166		467
…		…
168	by another C<prio> setting). Lower priority handlers get executed	469	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	470	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	471	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	472	unless you know what you are doing.
172		473
		474	=item type => $type
		475
		476	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		477	given type of objects only (the additional parameter C<subtype> can be
		478	used to further limit to the given subtype).
		479
173	=item on_I<event> => \&cb	480	=item on_I<event> => \&cb
174		481
175	Call the given code reference whenever the named event happens (event is	482	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	483	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	484	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	493	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	494	object/class are recognised.
188		495
189	=back	496	=back
190		497
191	=item cf::attach_to_type $object_type, $subtype, ...	498	Example, define an attachment called "sockpuppet" that calls the given
		499	event handler when a monster attacks:
192		500
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	501	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	502	on_skill_attack => sub {
195	type.	503	my ($self, $victim) = @_;
196		504	...
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	}	505	}
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	506	}
418	}
419		507
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	508	=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		509
446	Just because you have a perl object does not mean that the corresponding	510	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	511	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	512	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	513	can be used to test for existence of the C object part without causing an
450	exception.	514	exception.
451		515
		516	=cut
		517
		518	# the following variables are defined in .xs and must not be re-created
		519	our @CB_GLOBAL = (); # registry for all global events
		520	our @CB_ATTACHABLE = (); # registry for all attachables
		521	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		522	our @CB_PLAYER = ();
		523	our @CB_CLIENT = ();
		524	our @CB_TYPE = (); # registry for type (cf-object class) based events
		525	our @CB_MAP = ();
		526
		527	my %attachment;
		528
		529	sub cf::attachable::thawer_merge {
		530	# simply override everything except _meta
		531	local $_[0]{_meta};
		532	%{$_[0]} = %{$_[1]};
		533	}
		534
		535	sub _attach_cb($$$$) {
		536	my ($registry, $event, $prio, $cb) = @_;
		537
		538	use sort 'stable';
		539
		540	$cb = [$prio, $cb];
		541
		542	@{$registry->[$event]} = sort
		543	{ $a->[0] cmp $b->[0] }
		544	@{$registry->[$event] || []}, $cb;
		545	}
		546
		547	# hack
		548	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		549
		550	# attach handles attaching event callbacks
		551	# the only thing the caller has to do is pass the correct
		552	# registry (== where the callback attaches to).
		553	sub _attach {
		554	my ($registry, $klass, @arg) = @_;
		555
		556	my $object_type;
		557	my $prio = 0;
		558	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		559
		560	#TODO: get rid of this hack
		561	if ($attachable_klass{$klass}) {
		562	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		563	}
		564
		565	while (@arg) {
		566	my $type = shift @arg;
		567
		568	if ($type eq "prio") {
		569	$prio = shift @arg;
		570
		571	} elsif ($type eq "type") {
		572	$object_type = shift @arg;
		573	$registry = $CB_TYPE[$object_type] ||= [];
		574
		575	} elsif ($type eq "subtype") {
		576	defined $object_type or Carp::croak "subtype specified without type";
		577	my $object_subtype = shift @arg;
		578	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		579
		580	} elsif ($type eq "package") {
		581	my $pkg = shift @arg;
		582
		583	while (my ($name, $id) = each %cb_id) {
		584	if (my $cb = $pkg->can ($name)) {
		585	_attach_cb $registry, $id, $prio, $cb;
		586	}
		587	}
		588
		589	} elsif (exists $cb_id{$type}) {
		590	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		591
		592	} elsif (ref $type) {
		593	warn "attaching objects not supported, ignoring.\n";
		594
		595	} else {
		596	shift @arg;
		597	warn "attach argument '$type' not supported, ignoring.\n";
		598	}
		599	}
		600	}
		601
		602	sub _object_attach {
		603	my ($obj, $name, %arg) = @_;
		604
		605	return if exists $obj->{_attachment}{$name};
		606
		607	if (my $attach = $attachment{$name}) {
		608	my $registry = $obj->registry;
		609
		610	for (@$attach) {
		611	my ($klass, @attach) = @$_;
		612	_attach $registry, $klass, @attach;
		613	}
		614
		615	$obj->{$name} = \%arg;
		616	} else {
		617	warn "object uses attachment '$name' that is not available, postponing.\n";
		618	}
		619
		620	$obj->{_attachment}{$name} = undef;
		621	}
		622
		623	sub cf::attachable::attach {
		624	if (ref $_[0]) {
		625	_object_attach @_;
		626	} else {
		627	_attach shift->_attach_registry, @_;
		628	}
		629	};
		630
		631	# all those should be optimised
		632	sub cf::attachable::detach {
		633	my ($obj, $name) = @_;
		634
		635	if (ref $obj) {
		636	delete $obj->{_attachment}{$name};
		637	reattach ($obj);
		638	} else {
		639	Carp::croak "cannot, currently, detach class attachments";
		640	}
		641	};
		642
		643	sub cf::attachable::attached {
		644	my ($obj, $name) = @_;
		645
		646	exists $obj->{_attachment}{$name}
		647	}
		648
		649	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		650	eval "#line " . __LINE__ . " 'cf.pm'
		651	sub cf::\L$klass\E::_attach_registry {
		652	(\\\@CB_$klass, KLASS_$klass)
		653	}
		654
		655	sub cf::\L$klass\E::attachment {
		656	my \$name = shift;
		657
		658	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		659	}
		660	";
		661	die if $@;
		662	}
		663
		664	our $override;
		665	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		666
		667	sub override {
		668	$override = 1;
		669	@invoke_results = ();
		670	}
		671
		672	sub do_invoke {
		673	my $event = shift;
		674	my $callbacks = shift;
		675
		676	@invoke_results = ();
		677
		678	local $override;
		679
		680	for (@$callbacks) {
		681	eval { &{$_->[1]} };
		682
		683	if ($@) {
		684	warn "$@";
		685	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		686	override;
		687	}
		688
		689	return 1 if $override;
		690	}
		691
		692	0
		693	}
		694
		695	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		696
		697	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		698
		699	Generate an object-specific event with the given arguments.
		700
		701	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		702	removed in future versions), and there is no public API to access override
		703	results (if you must, access C<@cf::invoke_results> directly).
		704
452	=back	705	=back
453		706
454	=cut	707	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		708
460	#############################################################################	709	#############################################################################
461	# object support	710	# object support
462		711
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 {	712	sub reattach {
		713	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	714	my ($obj) = @_;
		715
		716	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		717
478	my $registry = $obj->registry;	718	my $registry = $obj->registry;
479		719
480	@$registry = ();	720	@$registry = ();
481		721
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	722	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		723
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	724	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	725	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	726	for (@$attach) {
487	my ($klass, @attach) = @$_;	727	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	728	_attach $registry, $klass, @attach;
489	}	729	}
490	} else {	730	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	731	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	732	}
493	}	733	}
494	}	734	}
495		735
496	sub object_freezer_save {	736	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, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	737	prio => -1000000,
		738	on_instantiate => sub {
		739	my ($obj, $data) = @_;
		740
		741	$data = from_json $data;
		742
		743	for (@$data) {
		744	my ($name, $args) = @$_;
		745
		746	$obj->attach ($name, %{$args || {} });
		747	}
		748	},
		749	on_reattach => \&reattach,
548	on_clone => sub {	750	on_clone => sub {
549	my ($src, $dst) = @_;	751	my ($src, $dst) = @_;
550		752
551	@{$dst->registry} = @{$src->registry};	753	@{$dst->registry} = @{$src->registry};
552		754
553	%$dst = %$src;	755	%$dst = %$src;
554		756
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	757	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	758	if exists $src->{_attachment};
557	},	759	},
558	;	760	);
		761
		762	sub object_freezer_save {
		763	my ($filename, $rdata, $objs) = @_;
		764
		765	sync_job {
		766	if (length $$rdata) {
		767	warn sprintf "saving %s (%d,%d)\n",
		768	$filename, length $$rdata, scalar @$objs;
		769
		770	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		771	chmod SAVE_MODE, $fh;
		772	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		773	aio_fsync $fh if $cf::USE_FSYNC;
		774	close $fh;
		775
		776	if (@$objs) {
		777	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		778	chmod SAVE_MODE, $fh;
		779	my $data = Storable::nfreeze { version => 1, objs => $objs };
		780	aio_write $fh, 0, (length $data), $data, 0;
		781	aio_fsync $fh if $cf::USE_FSYNC;
		782	close $fh;
		783	aio_rename "$filename.pst~", "$filename.pst";
		784	}
		785	} else {
		786	aio_unlink "$filename.pst";
		787	}
		788
		789	aio_rename "$filename~", $filename;
		790	} else {
		791	warn "FATAL: $filename~: $!\n";
		792	}
		793	} else {
		794	aio_unlink $filename;
		795	aio_unlink "$filename.pst";
		796	}
		797	}
		798	}
		799
		800	sub object_freezer_as_string {
		801	my ($rdata, $objs) = @_;
		802
		803	use Data::Dumper;
		804
		805	$$rdata . Dumper $objs
		806	}
		807
		808	sub object_thawer_load {
		809	my ($filename) = @_;
		810
		811	my ($data, $av);
		812
		813	(aio_load $filename, $data) >= 0
		814	or return;
		815
		816	unless (aio_stat "$filename.pst") {
		817	(aio_load "$filename.pst", $av) >= 0
		818	or return;
		819	$av = eval { (Storable::thaw $av)->{objs} };
		820	}
		821
		822	warn sprintf "loading %s (%d)\n",
		823	$filename, length $data, scalar @{$av || []};#d#
		824	return ($data, $av);
		825	}
559		826
560	#############################################################################	827	#############################################################################
561	# old plug-in events	828	# command handling &c
562		829
563	sub inject_event {	830	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		831
567	my $cb = $hook[$event_code]{$extension}	832	Register a callback for execution when the client sends the user command
568	or return;	833	$name.
569		834
570	&$cb	835	=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		836
592	sub register_command {	837	sub register_command {
593	my ($name, $time, $cb) = @_;	838	my ($name, $cb) = @_;
594		839
595	my $caller = caller;	840	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	841	#warn "registering command '$name/$time' to '$caller'";
597		842
598	push @{ $command{$name} }, [$time, $cb, $caller];	843	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	844	}
		845
		846	=item cf::register_extcmd $name => \&callback($pl,$packet);
		847
		848	Register a callbackf ro execution when the client sends an extcmd packet.
		849
		850	If the callback returns something, it is sent back as if reply was being
		851	called.
		852
		853	=cut
601		854
602	sub register_extcmd {	855	sub register_extcmd {
603	my ($name, $cb) = @_;	856	my ($name, $cb) = @_;
604		857
605	my $caller = caller;	858	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	859	}
610		860
611	sub register {	861	cf::player->attach (
612	my ($base, $pkg) = @_;	862	on_command => sub {
		863	my ($pl, $name, $params) = @_;
613		864
614	#TODO	865	my $cb = $COMMAND{$name}
615	}	866	or return;
		867
		868	for my $cmd (@$cb) {
		869	$cmd->[1]->($pl->ob, $params);
		870	}
		871
		872	cf::override;
		873	},
		874	on_extcmd => sub {
		875	my ($pl, $buf) = @_;
		876
		877	my $msg = eval { from_json $buf };
		878
		879	if (ref $msg) {
		880	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		881	if (my %reply = $cb->($pl, $msg)) {
		882	$pl->ext_reply ($msg->{msgid}, %reply);
		883	}
		884	}
		885	} else {
		886	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		887	}
		888
		889	cf::override;
		890	},
		891	);
616		892
617	sub load_extension {	893	sub load_extension {
618	my ($path) = @_;	894	my ($path) = @_;
619		895
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	896	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
621	my $base = $1;	897	my $base = $1;
622	my $pkg = $1;	898	my $pkg = $1;
623	$pkg =~ s/[^[:word:]]/_/g;	899	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";	900	$pkg = "ext::$pkg";
625		901
626	warn "loading '$path' into '$pkg'\n";	902	warn "... loading '$path' into '$pkg'\n";
627		903
628	open my $fh, "<:utf8", $path	904	open my $fh, "<:utf8", $path
629	or die "$path: $!";	905	or die "$path: $!";
630		906
631	my $source =	907	my $source =
632	"package $pkg; use strict; use utf8;\n"	908	"package $pkg; use strict; use utf8;\n"
633	. "#line 1 \"$path\"\n{\n"	909	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })	910	. (do { local $/; <$fh> })
635	. "\n};\n1";	911	. "\n};\n1";
636		912
637	eval $source	913	unless (eval $source) {
638	or die "$path: $@";	914	my $msg = $@ ? "$path: $@\n"
639		915	: "extension disabled.\n";
640	push @exts, $pkg;	916	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
641	$ext_pkg{$base} = $pkg;	917	warn $@;
642		918	warn "mandatory extension failed to load, exiting.\n";
643	# no strict 'refs';	919	exit 1;
644	# @{"$pkg\::ISA"} = ext::;	920	}
645		921	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	# }	922	}
659		923
660	# remove commands	924	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	}	925	}
687		926
688	sub load_extensions {	927	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {	928	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;	929	next unless -r $ext;
693	eval {	930	eval {
694	load_extension $ext;	931	load_extension $ext;
695	1	932	1
696	} or warn "$ext not loaded: $@";	933	} or warn "$ext not loaded: $@";
697	}	934	}
698	}	935	}
699		936
700	#############################################################################	937	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703		938
704	attach_to_players	939	=head2 CORE EXTENSIONS
705	on_extcmd => sub {	940
		941	Functions and methods that extend core crossfire objects.
		942
		943	=cut
		944
		945	package cf::player;
		946
		947	use Coro::AIO;
		948
		949	=head3 cf::player
		950
		951	=over 4
		952
		953	=item cf::player::find $login
		954
		955	Returns the given player object, loading it if necessary (might block).
		956
		957	=cut
		958
		959	sub playerdir($) {
		960	cf::localdir
		961	. "/"
		962	. cf::playerdir
		963	. "/"
		964	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		965	}
		966
		967	sub path($) {
		968	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		969
		970	(playerdir $login) . "/playerdata"
		971	}
		972
		973	sub find_active($) {
		974	$cf::PLAYER{$_[0]}
		975	and $cf::PLAYER{$_[0]}->active
		976	and $cf::PLAYER{$_[0]}
		977	}
		978
		979	sub exists($) {
		980	my ($login) = @_;
		981
		982	$cf::PLAYER{$login}
		983	or cf::sync_job { !aio_stat path $login }
		984	}
		985
		986	sub find($) {
		987	return $cf::PLAYER{$_[0]} || do {
		988	my $login = $_[0];
		989
		990	my $guard = cf::lock_acquire "user_find:$login";
		991
		992	$cf::PLAYER{$_[0]} || do {
		993	# rename old playerfiles to new ones
		994	#TODO: remove when no longer required
		995	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		996	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		997	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		998	aio_unlink +(playerdir $login) . "/$login.pl";
		999
		1000	my $pl = load_pl path $login
		1001	or return;
		1002	$cf::PLAYER{$login} = $pl
		1003	}
		1004	}
		1005	}
		1006
		1007	sub save($) {
		1008	my ($pl) = @_;
		1009
		1010	return if $pl->{deny_save};
		1011
		1012	my $path = path $pl;
		1013	my $guard = cf::lock_acquire "user_save:$path";
		1014
		1015	return if $pl->{deny_save};
		1016
		1017	aio_mkdir playerdir $pl, 0770;
		1018	$pl->{last_save} = $cf::RUNTIME;
		1019
		1020	$pl->save_pl ($path);
		1021	Coro::cede;
		1022	}
		1023
		1024	sub new($) {
		1025	my ($login) = @_;
		1026
		1027	my $self = create;
		1028
		1029	$self->ob->name ($login);
		1030	$self->{deny_save} = 1;
		1031
		1032	$cf::PLAYER{$login} = $self;
		1033
		1034	$self
		1035	}
		1036
		1037	=item $pl->quit_character
		1038
		1039	Nukes the player without looking back. If logged in, the connection will
		1040	be destroyed. May block for a long time.
		1041
		1042	=cut
		1043
		1044	sub quit_character {
		1045	my ($pl) = @_;
		1046
		1047	my $name = $pl->ob->name;
		1048
		1049	$pl->{deny_save} = 1;
		1050	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1051
		1052	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1053	$pl->deactivate;
		1054	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1055	$pl->ns->destroy if $pl->ns;
		1056
		1057	my $path = playerdir $pl;
		1058	my $temp = "$path~$cf::RUNTIME~deleting~";
		1059	aio_rename $path, $temp;
		1060	delete $cf::PLAYER{$pl->ob->name};
		1061	$pl->destroy;
		1062
		1063	my $prefix = qr<^~\Q$name\E/>;
		1064
		1065	# nuke player maps
		1066	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1067
		1068	IO::AIO::aio_rmtree $temp;
		1069	}
		1070
		1071	=item $pl->kick
		1072
		1073	Kicks a player out of the game. This destroys the connection.
		1074
		1075	=cut
		1076
		1077	sub kick {
		1078	my ($pl, $kicker) = @_;
		1079
		1080	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1081	$pl->killer ("kicked");
		1082	$pl->ns->destroy;
		1083	}
		1084
		1085	=item cf::player::list_logins
		1086
		1087	Returns am arrayref of all valid playernames in the system, can take a
		1088	while and may block, so not sync_job-capable, ever.
		1089
		1090	=cut
		1091
		1092	sub list_logins {
		1093	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1094	or return [];
		1095
		1096	my @logins;
		1097
		1098	for my $login (@$dirs) {
		1099	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1100	aio_read $fh, 0, 512, my $buf, 0 or next;
		1101	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1102
		1103	utf8::decode $login;
		1104	push @logins, $login;
		1105	}
		1106
		1107	\@logins
		1108	}
		1109
		1110	=item $player->maps
		1111
		1112	Returns an arrayref of map paths that are private for this
		1113	player. May block.
		1114
		1115	=cut
		1116
		1117	sub maps($) {
		1118	my ($pl) = @_;
		1119
		1120	$pl = ref $pl ? $pl->ob->name : $pl;
		1121
		1122	my $files = aio_readdir playerdir $pl
		1123	or return;
		1124
		1125	my @paths;
		1126
		1127	for (@$files) {
		1128	utf8::decode $_;
		1129	next if /\.(?:pl|pst)$/;
		1130	next unless /^$PATH_SEP/o;
		1131
		1132	push @paths, cf::map::normalise "~$pl/$_";
		1133	}
		1134
		1135	\@paths
		1136	}
		1137
		1138	=item $player->ext_reply ($msgid, %msg)
		1139
		1140	Sends an ext reply to the player.
		1141
		1142	=cut
		1143
		1144	sub ext_reply($$%) {
		1145	my ($self, $id, %msg) = @_;
		1146
		1147	$msg{msgid} = $id;
		1148
		1149	$self->send ("ext " . cf::to_json \%msg);
		1150	}
		1151
		1152	=item $player->ext_event ($type, %msg)
		1153
		1154	Sends an ext event to the client.
		1155
		1156	=cut
		1157
		1158	sub ext_event($$%) {
		1159	my ($self, $type, %msg) = @_;
		1160
		1161	$self->ns->ext_event ($type, %msg);
		1162	}
		1163
		1164	package cf;
		1165
		1166	=back
		1167
		1168
		1169	=head3 cf::map
		1170
		1171	=over 4
		1172
		1173	=cut
		1174
		1175	package cf::map;
		1176
		1177	use Fcntl;
		1178	use Coro::AIO;
		1179
		1180	use overload
		1181	'""' => \&as_string,
		1182	fallback => 1;
		1183
		1184	our $MAX_RESET = 3600;
		1185	our $DEFAULT_RESET = 3000;
		1186
		1187	sub generate_random_map {
		1188	my ($self, $rmp) = @_;
		1189	# mit "rum" bekleckern, nicht
		1190	$self->_create_random_map (
		1191	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1192	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1193	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1194	$rmp->{exit_on_final_map},
		1195	$rmp->{xsize}, $rmp->{ysize},
		1196	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1197	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1198	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1199	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1200	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1201	(cf::region::find $rmp->{region}), $rmp->{custom}
		1202	)
		1203	}
		1204
		1205	=item cf::map->register ($regex, $prio)
		1206
		1207	Register a handler for the map path matching the given regex at the
		1208	givne priority (higher is better, built-in handlers have priority 0, the
		1209	default).
		1210
		1211	=cut
		1212
		1213	sub register {
		1214	my (undef, $regex, $prio) = @_;
		1215	my $pkg = caller;
		1216
		1217	no strict;
		1218	push @{"$pkg\::ISA"}, __PACKAGE__;
		1219
		1220	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1221	}
		1222
		1223	# also paths starting with '/'
		1224	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1225
		1226	sub thawer_merge {
		1227	my ($self, $merge) = @_;
		1228
		1229	# we have to keep some variables in memory intact
		1230	local $self->{path};
		1231	local $self->{load_path};
		1232	local $self->{deny_save};
		1233	local $self->{deny_reset};
		1234
		1235	$self->SUPER::thawer_merge ($merge);
		1236	}
		1237
		1238	sub normalise {
		1239	my ($path, $base) = @_;
		1240
		1241	$path = "$path"; # make sure its a string
		1242
		1243	$path =~ s/\.map$//;
		1244
		1245	# map plan:
		1246	#
		1247	# /! non-realised random map exit (special hack!)
		1248	# {... are special paths that are not being touched
		1249	# ?xxx/... are special absolute paths
		1250	# ?random/... random maps
		1251	# /... normal maps
		1252	# ~user/... per-player map of a specific user
		1253
		1254	$path =~ s/$PATH_SEP/\//go;
		1255
		1256	# treat it as relative path if it starts with
		1257	# something that looks reasonable
		1258	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1259	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1260
		1261	$base =~ s{[^/]+/?$}{};
		1262	$path = "$base/$path";
		1263	}
		1264
		1265	for ($path) {
		1266	redo if s{//}{/};
		1267	redo if s{/\.?/}{/};
		1268	redo if s{/[^/]+/\.\./}{/};
		1269	}
		1270
		1271	$path
		1272	}
		1273
		1274	sub new_from_path {
		1275	my (undef, $path, $base) = @_;
		1276
		1277	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1278
		1279	$path = normalise $path, $base;
		1280
		1281	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1282	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1283	my $self = bless cf::map::new, $pkg;
		1284	$self->{path} = $path; $self->path ($path);
		1285	$self->init; # pass $1 etc.
		1286	return $self;
		1287	}
		1288	}
		1289
		1290	Carp::carp "unable to resolve path '$path' (base '$base').";
		1291	()
		1292	}
		1293
		1294	sub init {
		1295	my ($self) = @_;
		1296
		1297	$self
		1298	}
		1299
		1300	sub as_string {
		1301	my ($self) = @_;
		1302
		1303	"$self->{path}"
		1304	}
		1305
		1306	# the displayed name, this is a one way mapping
		1307	sub visible_name {
		1308	&as_string
		1309	}
		1310
		1311	# the original (read-only) location
		1312	sub load_path {
		1313	my ($self) = @_;
		1314
		1315	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1316	}
		1317
		1318	# the temporary/swap location
		1319	sub save_path {
		1320	my ($self) = @_;
		1321
		1322	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1323	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1324	}
		1325
		1326	# the unique path, undef == no special unique path
		1327	sub uniq_path {
		1328	my ($self) = @_;
		1329
		1330	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1331	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1332	}
		1333
		1334	# and all this just because we cannot iterate over
		1335	# all maps in C++...
		1336	sub change_all_map_light {
		1337	my ($change) = @_;
		1338
		1339	$_->change_map_light ($change)
		1340	for grep $_->outdoor, values %cf::MAP;
		1341	}
		1342
		1343	sub unlink_save {
		1344	my ($self) = @_;
		1345
		1346	utf8::encode (my $save = $self->save_path);
		1347	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1348	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1349	}
		1350
		1351	sub load_header_from($) {
		1352	my ($self, $path) = @_;
		1353
		1354	utf8::encode $path;
		1355	#aio_open $path, O_RDONLY, 0
		1356	# or return;
		1357
		1358	$self->_load_header ($path)
		1359	or return;
		1360
		1361	$self->{load_path} = $path;
		1362
		1363	1
		1364	}
		1365
		1366	sub load_header_orig {
		1367	my ($self) = @_;
		1368
		1369	$self->load_header_from ($self->load_path)
		1370	}
		1371
		1372	sub load_header_temp {
		1373	my ($self) = @_;
		1374
		1375	$self->load_header_from ($self->save_path)
		1376	}
		1377
		1378	sub prepare_temp {
		1379	my ($self) = @_;
		1380
		1381	$self->last_access ((delete $self->{last_access})
		1382	|| $cf::RUNTIME); #d#
		1383	# safety
		1384	$self->{instantiate_time} = $cf::RUNTIME
		1385	if $self->{instantiate_time} > $cf::RUNTIME;
		1386	}
		1387
		1388	sub prepare_orig {
		1389	my ($self) = @_;
		1390
		1391	$self->{load_original} = 1;
		1392	$self->{instantiate_time} = $cf::RUNTIME;
		1393	$self->last_access ($cf::RUNTIME);
		1394	$self->instantiate;
		1395	}
		1396
		1397	sub load_header {
		1398	my ($self) = @_;
		1399
		1400	if ($self->load_header_temp) {
		1401	$self->prepare_temp;
		1402	} else {
		1403	$self->load_header_orig
		1404	or return;
		1405	$self->prepare_orig;
		1406	}
		1407
		1408	1
		1409	}
		1410
		1411	sub find;
		1412	sub find {
		1413	my ($path, $origin) = @_;
		1414
		1415	$path = normalise $path, $origin && $origin->path;
		1416
		1417	cf::lock_wait "map_find:$path";
		1418
		1419	$cf::MAP{$path} || do {
		1420	my $guard = cf::lock_acquire "map_find:$path";
		1421	my $map = new_from_path cf::map $path
		1422	or return;
		1423
		1424	$map->{last_save} = $cf::RUNTIME;
		1425
		1426	$map->load_header
		1427	or return;
		1428
		1429	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1430	# doing this can freeze the server in a sync job, obviously
		1431	#$cf::WAIT_FOR_TICK->wait;
		1432	$map->reset;
		1433	undef $guard;
		1434	return find $path;
		1435	}
		1436
		1437	$cf::MAP{$path} = $map
		1438	}
		1439	}
		1440
		1441	sub pre_load { }
		1442	sub post_load { }
		1443
		1444	sub load {
		1445	my ($self) = @_;
		1446
		1447	local $self->{deny_reset} = 1; # loading can take a long time
		1448
		1449	my $path = $self->{path};
		1450	my $guard = cf::lock_acquire "map_load:$path";
		1451
		1452	return if $self->in_memory != cf::MAP_SWAPPED;
		1453
		1454	$self->in_memory (cf::MAP_LOADING);
		1455
		1456	$self->alloc;
		1457
		1458	$self->pre_load;
		1459
		1460	$self->_load_objects ($self->{load_path}, 1)
		1461	or return;
		1462
		1463	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1464	if delete $self->{load_original};
		1465
		1466	if (my $uniq = $self->uniq_path) {
		1467	utf8::encode $uniq;
		1468	if (aio_open $uniq, O_RDONLY, 0) {
		1469	$self->clear_unique_items;
		1470	$self->_load_objects ($uniq, 0);
		1471	}
		1472	}
		1473
		1474	Coro::cede;
		1475
		1476	# now do the right thing for maps
		1477	$self->link_multipart_objects;
		1478
		1479	unless ($self->{deny_activate}) {
		1480	$self->decay_objects;
		1481	$self->fix_auto_apply;
		1482	$self->update_buttons;
		1483	Coro::cede;
		1484	$self->set_darkness_map;
		1485	$self->difficulty ($self->estimate_difficulty)
		1486	unless $self->difficulty;
		1487	Coro::cede;
		1488	$self->activate;
		1489	}
		1490
		1491	$self->post_load;
		1492
		1493	$self->in_memory (cf::MAP_IN_MEMORY);
		1494	}
		1495
		1496	sub customise_for {
706	my ($pl, $buf) = @_;	1497	my ($self, $ob) = @_;
707		1498
708	my $msg = eval { from_json $buf };	1499	return find "~" . $ob->name . "/" . $self->{path}
		1500	if $self->per_player;
709		1501
710	if (ref $msg) {	1502	$self
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1503	}
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1504
713	$pl->ext_reply ($msg->{msgid}, %reply);	1505	# find and load all maps in the 3x3 area around a map
714	}	1506	sub load_diag {
		1507	my ($map) = @_;
		1508
		1509	my @diag; # diagonal neighbours
		1510
		1511	for (0 .. 3) {
		1512	my $neigh = $map->tile_path ($_)
		1513	or next;
		1514	$neigh = find $neigh, $map
		1515	or next;
		1516	$neigh->load;
		1517
		1518	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1519	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1520	}
		1521
		1522	for (@diag) {
		1523	my $neigh = find @$_
		1524	or next;
		1525	$neigh->load;
		1526	}
		1527	}
		1528
		1529	sub find_sync {
		1530	my ($path, $origin) = @_;
		1531
		1532	cf::sync_job { find $path, $origin }
		1533	}
		1534
		1535	sub do_load_sync {
		1536	my ($map) = @_;
		1537
		1538	cf::sync_job { $map->load };
		1539	}
		1540
		1541	our %MAP_PREFETCH;
		1542	our $MAP_PREFETCHER = undef;
		1543
		1544	sub find_async {
		1545	my ($path, $origin) = @_;
		1546
		1547	$path = normalise $path, $origin && $origin->{path};
		1548
		1549	if (my $map = $cf::MAP{$path}) {
		1550	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1551	}
		1552
		1553	undef $MAP_PREFETCH{$path};
		1554	$MAP_PREFETCHER ||= cf::async {
		1555	while (%MAP_PREFETCH) {
		1556	for my $path (keys %MAP_PREFETCH) {
		1557	my $map = find $path
		1558	or next;
		1559	$map->load;
		1560
		1561	delete $MAP_PREFETCH{$path};
715	}	1562	}
		1563	}
		1564	undef $MAP_PREFETCHER;
		1565	};
		1566	$MAP_PREFETCHER->prio (6);
		1567
		1568	()
		1569	}
		1570
		1571	sub save {
		1572	my ($self) = @_;
		1573
		1574	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1575
		1576	$self->{last_save} = $cf::RUNTIME;
		1577
		1578	return unless $self->dirty;
		1579
		1580	my $save = $self->save_path; utf8::encode $save;
		1581	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1582
		1583	$self->{load_path} = $save;
		1584
		1585	return if $self->{deny_save};
		1586
		1587	local $self->{last_access} = $self->last_access;#d#
		1588
		1589	cf::async {
		1590	$_->contr->save for $self->players;
		1591	};
		1592
		1593	if ($uniq) {
		1594	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1595	$self->_save_objects ($uniq, cf::IO_UNIQUES);
716	} else {	1596	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1597	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
718	}
719
720	cf::override;
721	},	1598	}
722	;	1599	}
723		1600
724	#############################################################################	1601	sub swap_out {
725	# load/save/clean perl data associated with a map
726
727	*cf::mapsupport::on_clean = sub {
728	my ($map) = @_;	1602	my ($self) = @_;
729		1603
730	my $path = $map->tmpname;	1604	# save first because save cedes
731	defined $path or return;	1605	$self->save;
732		1606
733	unlink "$path.pst";	1607	my $lock = cf::lock_acquire "map_data:" . $self->path;
734	};
735		1608
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1609	return if $self->players;
		1610	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1611	return if $self->{deny_save};
737		1612
738	#############################################################################	1613	$self->clear;
739	# load/save perl data associated with player->ob objects	1614	$self->in_memory (cf::MAP_SWAPPED);
740
741	sub all_objects(@) {
742	@_, map all_objects ($_->inv), @_
743	}	1615	}
744		1616
745	# TODO: compatibility cruft, remove when no longer needed	1617	sub reset_at {
746	attach_to_players	1618	my ($self) = @_;
747	on_load => sub {
748	my ($pl, $path) = @_;
749		1619
750	for my $o (all_objects $pl->ob) {	1620	# TODO: safety, remove and allow resettable per-player maps
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1621	return 1e99 if $self->isa ("ext::map_per_player");#d#
752	$o->set_ob_key_value ("_perl_data");	1622	return 1e99 if $self->{deny_reset};
753		1623
754	%$o = %{ Storable::thaw pack "H*", $value };	1624	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
755	}	1625	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
756	}	1626
		1627	$time + $to
		1628	}
		1629
		1630	sub should_reset {
		1631	my ($self) = @_;
		1632
		1633	$self->reset_at <= $cf::RUNTIME
		1634	}
		1635
		1636	sub reset {
		1637	my ($self) = @_;
		1638
		1639	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1640
		1641	return if $self->players;
		1642	return if $self->isa ("ext::map_per_player");#d#
		1643
		1644	warn "resetting map ", $self->path;#d#
		1645
		1646	$self->in_memory (cf::MAP_SWAPPED);
		1647
		1648	# need to save uniques path
		1649	unless ($self->{deny_save}) {
		1650	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1651
		1652	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1653	if $uniq;
757	},	1654	}
758	;
759		1655
760	#############################################################################	1656	delete $cf::MAP{$self->path};
761		1657
762	=head2 CORE EXTENSIONS	1658	$self->clear;
763		1659
764	Functions and methods that extend core crossfire objects.	1660	$_->clear_links_to ($self) for values %cf::MAP;
		1661
		1662	$self->unlink_save;
		1663	$self->destroy;
		1664	}
		1665
		1666	my $nuke_counter = "aaaa";
		1667
		1668	sub nuke {
		1669	my ($self) = @_;
		1670
		1671	delete $cf::MAP{$self->path};
		1672
		1673	$self->unlink_save;
		1674
		1675	bless $self, "cf::map";
		1676	delete $self->{deny_reset};
		1677	$self->{deny_save} = 1;
		1678	$self->reset_timeout (1);
		1679	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1680
		1681	$cf::MAP{$self->path} = $self;
		1682
		1683	$self->reset; # polite request, might not happen
		1684	}
		1685
		1686	=item cf::map::unique_maps
		1687
		1688	Returns an arrayref of paths of all shared maps that have
		1689	instantiated unique items. May block.
		1690
		1691	=cut
		1692
		1693	sub unique_maps() {
		1694	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1695	or return;
		1696
		1697	my @paths;
		1698
		1699	for (@$files) {
		1700	utf8::decode $_;
		1701	next if /\.pst$/;
		1702	next unless /^$PATH_SEP/o;
		1703
		1704	push @paths, cf::map::normalise $_;
		1705	}
		1706
		1707	\@paths
		1708	}
		1709
		1710	package cf;
		1711
		1712	=back
		1713
		1714	=head3 cf::object
		1715
		1716	=cut
		1717
		1718	package cf::object;
765		1719
766	=over 4	1720	=over 4
767		1721
768	=item cf::player::exists $login	1722	=item $ob->inv_recursive
769		1723
770	Returns true when the given account exists.	1724	Returns the inventory of the object _and_ their inventories, recursively.
771		1725
772	=cut	1726	=cut
773		1727
774	sub cf::player::exists($) {	1728	sub inv_recursive_;
775	cf::player::find $_[0]	1729	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1730	map { $_, inv_recursive_ $_->inv } @_
777	}	1731	}
778		1732
		1733	sub inv_recursive {
		1734	inv_recursive_ inv $_[0]
		1735	}
		1736
		1737	package cf;
		1738
		1739	=back
		1740
		1741	=head3 cf::object::player
		1742
		1743	=over 4
		1744
779	=item $object->reply ($npc, $msg[, $flags])	1745	=item $player_object->reply ($npc, $msg[, $flags])
780		1746
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1747	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	1748	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	1749	dialogue with the given NPC character.
784		1750
785	=cut	1751	=cut
786		1752
787	# rough implementation of a future "reply" method that works	1753	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	1754	# with dialog boxes.
		1755	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	1756	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	1757	my ($self, $npc, $msg, $flags) = @_;
791		1758
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1759	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		1760
…		…
797	$msg = $npc->name . " says: $msg" if $npc;	1764	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	1765	$self->message ($msg, $flags);
799	}	1766	}
800	}	1767	}
801		1768
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	1769	=item $player_object->may ("access")
803		1770
804	Sends an ext reply to the player.	1771	Returns wether the given player is authorized to access resource "access"
		1772	(e.g. "command_wizcast").
805		1773
806	=cut	1774	=cut
807		1775
808	sub cf::player::ext_reply($$$%) {	1776	sub cf::object::player::may {
		1777	my ($self, $access) = @_;
		1778
		1779	$self->flag (cf::FLAG_WIZ) ||
		1780	(ref $cf::CFG{"may_$access"}
		1781	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1782	: $cf::CFG{"may_$access"})
		1783	}
		1784
		1785	=item $player_object->enter_link
		1786
		1787	Freezes the player and moves him/her to a special map (C<{link}>).
		1788
		1789	The player should be reasonably safe there for short amounts of time. You
		1790	I<MUST> call C<leave_link> as soon as possible, though.
		1791
		1792	Will never block.
		1793
		1794	=item $player_object->leave_link ($map, $x, $y)
		1795
		1796	Moves the player out of the special C<{link}> map onto the specified
		1797	map. If the map is not valid (or omitted), the player will be moved back
		1798	to the location he/she was before the call to C<enter_link>, or, if that
		1799	fails, to the emergency map position.
		1800
		1801	Might block.
		1802
		1803	=cut
		1804
		1805	sub link_map {
		1806	unless ($LINK_MAP) {
		1807	$LINK_MAP = cf::map::find "{link}"
		1808	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1809	$LINK_MAP->load;
		1810	}
		1811
		1812	$LINK_MAP
		1813	}
		1814
		1815	sub cf::object::player::enter_link {
		1816	my ($self) = @_;
		1817
		1818	$self->deactivate_recursive;
		1819
		1820	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1821
		1822	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1823	if $self->map;
		1824
		1825	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1826	}
		1827
		1828	sub cf::object::player::leave_link {
		1829	my ($self, $map, $x, $y) = @_;
		1830
		1831	my $link_pos = delete $self->{_link_pos};
		1832
		1833	unless ($map) {
		1834	# restore original map position
		1835	($map, $x, $y) = @{ $link_pos || [] };
		1836	$map = cf::map::find $map;
		1837
		1838	unless ($map) {
		1839	($map, $x, $y) = @$EMERGENCY_POSITION;
		1840	$map = cf::map::find $map
		1841	or die "FATAL: cannot load emergency map\n";
		1842	}
		1843	}
		1844
		1845	($x, $y) = (-1, -1)
		1846	unless (defined $x) && (defined $y);
		1847
		1848	# use -1 or undef as default coordinates, not 0, 0
		1849	($x, $y) = ($map->enter_x, $map->enter_y)
		1850	if $x <=0 && $y <= 0;
		1851
		1852	$map->load;
		1853	$map->load_diag;
		1854
		1855	return unless $self->contr->active;
		1856	$self->activate_recursive;
		1857
		1858	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1859	$self->enter_map ($map, $x, $y);
		1860	}
		1861
		1862	cf::player->attach (
		1863	on_logout => sub {
		1864	my ($pl) = @_;
		1865
		1866	# abort map switching before logout
		1867	if ($pl->ob->{_link_pos}) {
		1868	cf::sync_job {
		1869	$pl->ob->leave_link
		1870	};
		1871	}
		1872	},
		1873	on_login => sub {
		1874	my ($pl) = @_;
		1875
		1876	# try to abort aborted map switching on player login :)
		1877	# should happen only on crashes
		1878	if ($pl->ob->{_link_pos}) {
		1879	$pl->ob->enter_link;
		1880	(async {
		1881	$pl->ob->reply (undef,
		1882	"There was an internal problem at your last logout, "
		1883	. "the server will try to bring you to your intended destination in a second.",
		1884	cf::NDI_RED);
		1885	# we need this sleep as the login has a concurrent enter_exit running
		1886	# and this sleep increases chances of the player not ending up in scorn
		1887	Coro::Timer::sleep 1;
		1888	$pl->ob->leave_link;
		1889	})->prio (2);
		1890	}
		1891	},
		1892	);
		1893
		1894	=item $player_object->goto ($path, $x, $y)
		1895
		1896	=cut
		1897
		1898	sub cf::object::player::goto {
		1899	my ($self, $path, $x, $y) = @_;
		1900
		1901	$self->enter_link;
		1902
		1903	(async {
		1904	my $map = eval {
		1905	my $map = cf::map::find $path;
		1906	$map = $map->customise_for ($self) if $map;
		1907	$map
		1908	} or
		1909	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1910
		1911	$self->leave_link ($map, $x, $y);
		1912	})->prio (1);
		1913	}
		1914
		1915	=item $player_object->enter_exit ($exit_object)
		1916
		1917	=cut
		1918
		1919	sub parse_random_map_params {
		1920	my ($spec) = @_;
		1921
		1922	my $rmp = { # defaults
		1923	xsize => (cf::rndm 15, 40),
		1924	ysize => (cf::rndm 15, 40),
		1925	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1926	#layout => string,
		1927	};
		1928
		1929	for (split /\n/, $spec) {
		1930	my ($k, $v) = split /\s+/, $_, 2;
		1931
		1932	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1933	}
		1934
		1935	$rmp
		1936	}
		1937
		1938	sub prepare_random_map {
		1939	my ($exit) = @_;
		1940
		1941	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1942
		1943	# all this does is basically replace the /! path by
		1944	# a new random map path (?random/...) with a seed
		1945	# that depends on the exit object
		1946
		1947	my $rmp = parse_random_map_params $exit->msg;
		1948
		1949	if ($exit->map) {
		1950	$rmp->{region} = $exit->region->name;
		1951	$rmp->{origin_map} = $exit->map->path;
		1952	$rmp->{origin_x} = $exit->x;
		1953	$rmp->{origin_y} = $exit->y;
		1954	}
		1955
		1956	$rmp->{random_seed} ||= $exit->random_seed;
		1957
		1958	my $data = cf::to_json $rmp;
		1959	my $md5 = Digest::MD5::md5_hex $data;
		1960	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1961
		1962	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1963	aio_write $fh, 0, (length $data), $data, 0;
		1964	undef $fh;
		1965	aio_rename "$meta~", $meta;
		1966
		1967	$exit->slaying ("?random/$md5");
		1968	$exit->msg (undef);
		1969	}
		1970	}
		1971
		1972	sub cf::object::player::enter_exit {
		1973	my ($self, $exit) = @_;
		1974
		1975	return unless $self->type == cf::PLAYER;
		1976
		1977	if ($exit->slaying eq "/!") {
		1978	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1979	# the problem is that $exit might not survive long enough
		1980	# so it needs to be done right now, right here
		1981	cf::sync_job { prepare_random_map $exit };
		1982	}
		1983
		1984	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1985	my $hp = $exit->stats->hp;
		1986	my $sp = $exit->stats->sp;
		1987
		1988	$self->enter_link;
		1989
		1990	(async {
		1991	$self->deactivate_recursive; # just to be sure
		1992	unless (eval {
		1993	$self->goto ($slaying, $hp, $sp);
		1994
		1995	1;
		1996	}) {
		1997	$self->message ("Something went wrong deep within the crossfire server. "
		1998	. "I'll try to bring you back to the map you were before. "
		1999	. "Please report this to the dungeon master!",
		2000	cf::NDI_UNIQUE | cf::NDI_RED);
		2001
		2002	warn "ERROR in enter_exit: $@";
		2003	$self->leave_link;
		2004	}
		2005	})->prio (1);
		2006	}
		2007
		2008	=head3 cf::client
		2009
		2010	=over 4
		2011
		2012	=item $client->send_drawinfo ($text, $flags)
		2013
		2014	Sends a drawinfo packet to the client. Circumvents output buffering so
		2015	should not be used under normal circumstances.
		2016
		2017	=cut
		2018
		2019	sub cf::client::send_drawinfo {
		2020	my ($self, $text, $flags) = @_;
		2021
		2022	utf8::encode $text;
		2023	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2024	}
		2025
		2026	=item $client->ext_event ($type, %msg)
		2027
		2028	Sends an exti event to the client.
		2029
		2030	=cut
		2031
		2032	sub cf::client::ext_event($$%) {
809	my ($self, $id, %msg) = @_;	2033	my ($self, $type, %msg) = @_;
810		2034
811	$msg{msgid} = $id;	2035	$msg{msgtype} = "event_$type";
812
813	$self->send ("ext " . to_json \%msg);	2036	$self->send_packet ("ext " . cf::to_json \%msg);
814	}	2037	}
		2038
		2039	=item $success = $client->query ($flags, "text", \&cb)
		2040
		2041	Queues a query to the client, calling the given callback with
		2042	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2043	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2044
		2045	Queries can fail, so check the return code. Or don't, as queries will become
		2046	reliable at some point in the future.
		2047
		2048	=cut
		2049
		2050	sub cf::client::query {
		2051	my ($self, $flags, $text, $cb) = @_;
		2052
		2053	return unless $self->state == ST_PLAYING
		2054	|| $self->state == ST_SETUP
		2055	|| $self->state == ST_CUSTOM;
		2056
		2057	$self->state (ST_CUSTOM);
		2058
		2059	utf8::encode $text;
		2060	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2061
		2062	$self->send_packet ($self->{query_queue}[0][0])
		2063	if @{ $self->{query_queue} } == 1;
		2064	}
		2065
		2066	cf::client->attach (
		2067	on_reply => sub {
		2068	my ($ns, $msg) = @_;
		2069
		2070	# this weird shuffling is so that direct followup queries
		2071	# get handled first
		2072	my $queue = delete $ns->{query_queue}
		2073	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2074
		2075	(shift @$queue)->[1]->($msg);
		2076	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2077
		2078	push @{ $ns->{query_queue} }, @$queue;
		2079
		2080	if (@{ $ns->{query_queue} } == @$queue) {
		2081	if (@$queue) {
		2082	$ns->send_packet ($ns->{query_queue}[0][0]);
		2083	} else {
		2084	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2085	}
		2086	}
		2087	},
		2088	);
		2089
		2090	=item $client->async (\&cb)
		2091
		2092	Create a new coroutine, running the specified callback. The coroutine will
		2093	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2094	or loss of connection).
		2095
		2096	=cut
		2097
		2098	sub cf::client::async {
		2099	my ($self, $cb) = @_;
		2100
		2101	my $coro = &Coro::async ($cb);
		2102
		2103	$coro->on_destroy (sub {
		2104	delete $self->{_coro}{$coro+0};
		2105	});
		2106
		2107	$self->{_coro}{$coro+0} = $coro;
		2108
		2109	$coro
		2110	}
		2111
		2112	cf::client->attach (
		2113	on_destroy => sub {
		2114	my ($ns) = @_;
		2115
		2116	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2117	},
		2118	);
815		2119
816	=back	2120	=back
817		2121
818	=cut
819
820	#############################################################################
821		2122
822	=head2 SAFE SCRIPTING	2123	=head2 SAFE SCRIPTING
823		2124
824	Functions that provide a safe environment to compile and execute	2125	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	2126	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	2127	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	2128	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	2129	functions and methods that can be called is greatly reduced.
829		2130
830	=cut	2131	=cut
831		2132
832	our $safe = new Safe "safe";	2133	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	2134	our $safe_hole = new Safe::Hole;
…		…
838		2139
839	# here we export the classes and methods available to script code	2140	# here we export the classes and methods available to script code
840		2141
841	=pod	2142	=pod
842		2143
843	The following fucntions and emthods are available within a safe environment:	2144	The following functions and methods are available within a safe environment:
844		2145
845	cf::object contr pay_amount pay_player	2146	cf::object contr pay_amount pay_player map
846	cf::object::player player	2147	cf::object::player player
847	cf::player peaceful	2148	cf::player peaceful
		2149	cf::map trigger
848		2150
849	=cut	2151	=cut
850		2152
851	for (	2153	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	2154	["cf::object" => qw(contr pay_amount pay_player map)],
853	["cf::object::player" => qw(player)],	2155	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	2156	["cf::player" => qw(peaceful)],
		2157	["cf::map" => qw(trigger)],
855	) {	2158	) {
856	no strict 'refs';	2159	no strict 'refs';
857	my ($pkg, @funs) = @$_;	2160	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2161	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	2162	for @funs;
…		…
939	The parameter C<$family> should best start with the name of the extension	2242	The parameter C<$family> should best start with the name of the extension
940	using it, it should be unique.	2243	using it, it should be unique.
941		2244
942	=over 4	2245	=over 4
943		2246
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	2247	=item $value = cf::db_get $family => $key
951		2248
952	Returns a single value from the database	2249	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		2250
959	=item cf::db_put $family => $key => $value	2251	=item cf::db_put $family => $key => $value
960		2252
961	Stores the given C<$value> in the family hash. Updates are delayed, if you	2253	Stores the given C<$value> in the family.
962	want the data to be synced to disk immediately, use C<cf::db_sync>.
963		2254
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	2255	=cut
973		2256
974	{	2257	our $DB;
975	my $db;	2258
		2259	sub db_init {
		2260	unless ($DB) {
		2261	$DB = BDB::db_create $DB_ENV;
		2262
		2263	cf::sync_job {
		2264	eval {
		2265	$DB->set_flags (BDB::CHKSUM);
		2266
		2267	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2268	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2269	cf::cleanup "db_open(db): $!" if $!;
		2270	};
		2271	cf::cleanup "db_open(db): $@" if $@;
		2272	};
		2273
976	my $path = cf::localdir . "/database.pst";	2274	my $path = cf::localdir . "/database.pst";
		2275	if (stat $path) {
		2276	cf::sync_job {
		2277	my $pst = Storable::retrieve $path;
977		2278
978	sub db_load() {	2279	cf::db_put (board => data => $pst->{board});
979	warn "loading database $path\n";#d# remove later	2280	cf::db_put (guildrules => data => $pst->{guildrules});
980	$db = stat $path ? Storable::retrieve $path : { };	2281	cf::db_put (rent => balance => $pst->{rent}{balance});
981	}	2282	BDB::db_env_txn_checkpoint $DB_ENV;
982		2283
983	my $pid;	2284	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	}	2285	};
994	}
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	});
1006
1007	sub db_dirty() {
1008	$dirty = 1;
1009	$idle->start;
1010	}
1011
1012	sub db_get($;$) {
1013	@_ >= 2
1014	? $db->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })
1016	}
1017
1018	sub db_put($$;$) {
1019	if (@_ >= 3) {
1020	$db->{$_[0]}{$_[1]} = $_[2];
1021	} else {
1022	$db->{$_[0]} = $_[1];
1023	}
1024	db_dirty;
1025	}
1026
1027	attach_global
1028	prio => 10000,
1029	on_cleanup => sub {
1030	db_sync;
1031	},	2286	}
1032	;	2287	}
		2288	}
		2289
		2290	sub db_get($$) {
		2291	my $key = "$_[0]/$_[1]";
		2292
		2293	cf::sync_job {
		2294	BDB::db_get $DB, undef, $key, my $data;
		2295
		2296	$! ? ()
		2297	: Compress::LZF::sthaw $data
		2298	}
		2299	}
		2300
		2301	sub db_put($$$) {
		2302	BDB::dbreq_pri 4;
		2303	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
1033	}	2304	}
1034		2305
1035	#############################################################################	2306	#############################################################################
1036	# the server's main()	2307	# the server's init and main functions
		2308
		2309	sub load_facedata {
		2310	my $path = sprintf "%s/facedata", cf::datadir;
		2311
		2312	warn "loading facedata from $path\n";
		2313
		2314	my $facedata;
		2315	0 < aio_load $path, $facedata
		2316	or die "$path: $!";
		2317
		2318	$facedata = Coro::Storable::thaw $facedata;
		2319
		2320	$facedata->{version} == 2
		2321	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2322
		2323	{
		2324	my $faces = $facedata->{faceinfo};
		2325
		2326	while (my ($face, $info) = each %$faces) {
		2327	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2328	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2329	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2330	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2331	Coro::cede;
		2332	}
		2333
		2334	while (my ($face, $info) = each %$faces) {
		2335	next unless $info->{smooth};
		2336	my $idx = cf::face::find $face
		2337	or next;
		2338	if (my $smooth = cf::face::find $info->{smooth}) {
		2339	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2340	} else {
		2341	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2342	}
		2343	Coro::cede;
		2344	}
		2345	}
		2346
		2347	{
		2348	my $anims = $facedata->{animinfo};
		2349
		2350	while (my ($anim, $info) = each %$anims) {
		2351	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2352	Coro::cede;
		2353	}
		2354
		2355	cf::anim::invalidate_all; # d'oh
		2356	}
		2357
		2358	1
		2359	}
		2360
		2361	sub reload_resources {
		2362	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2363	or die "unable to load regions file\n";#d#
		2364	load_facedata
		2365	or die "unable to load facedata\n";#d#
		2366	}
		2367
		2368	sub init {
		2369	reload_resources;
		2370	}
1037		2371
1038	sub cfg_load {	2372	sub cfg_load {
1039	open my $fh, "<:utf8", cf::confdir . "/config"	2373	open my $fh, "<:utf8", cf::confdir . "/config"
1040	or return;	2374	or return;
1041		2375
1042	local $/;	2376	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	2377	*CFG = YAML::Syck::Load <$fh>;
		2378
		2379	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2380
		2381	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2382	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2383
		2384	if (exists $CFG{mlockall}) {
		2385	eval {
		2386	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2387	and die "WARNING: m(un)lockall failed: $!\n";
		2388	};
		2389	warn $@ if $@;
		2390	}
1044	}	2391	}
1045		2392
1046	sub main {	2393	sub main {
		2394	# we must not ever block the main coroutine
		2395	local $Coro::idle = sub {
		2396	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2397	(async {
		2398	Event::one_event;
		2399	})->prio (Coro::PRIO_MAX);
		2400	};
		2401
1047	cfg_load;	2402	cfg_load;
1048	db_load;	2403	db_init;
1049	load_extensions;	2404	load_extensions;
		2405
		2406	$TICK_WATCHER->start;
1050	Event::loop;	2407	Event::loop;
1051	}	2408	}
1052		2409
1053	#############################################################################	2410	#############################################################################
1054	# initialisation	2411	# initialisation and cleanup
1055		2412
		2413	# install some emergency cleanup handlers
		2414	BEGIN {
		2415	for my $signal (qw(INT HUP TERM)) {
		2416	Event->signal (
		2417	reentrant => 0,
		2418	data => WF_AUTOCANCEL,
		2419	signal => $signal,
		2420	prio => 0,
		2421	cb => sub {
		2422	cf::cleanup "SIG$signal";
		2423	},
		2424	);
		2425	}
		2426	}
		2427
		2428	sub emergency_save() {
		2429	my $freeze_guard = cf::freeze_mainloop;
		2430
		2431	warn "enter emergency perl save\n";
		2432
		2433	cf::sync_job {
		2434	# use a peculiar iteration method to avoid tripping on perl
		2435	# refcount bugs in for. also avoids problems with players
		2436	# and maps saved/destroyed asynchronously.
		2437	warn "begin emergency player save\n";
		2438	for my $login (keys %cf::PLAYER) {
		2439	my $pl = $cf::PLAYER{$login} or next;
		2440	$pl->valid or next;
		2441	$pl->save;
		2442	}
		2443	warn "end emergency player save\n";
		2444
		2445	warn "begin emergency map save\n";
		2446	for my $path (keys %cf::MAP) {
		2447	my $map = $cf::MAP{$path} or next;
		2448	$map->valid or next;
		2449	$map->save;
		2450	}
		2451	warn "end emergency map save\n";
		2452
		2453	warn "begin emergency database checkpoint\n";
		2454	BDB::db_env_txn_checkpoint $DB_ENV;
		2455	warn "end emergency database checkpoint\n";
		2456	};
		2457
		2458	warn "leave emergency perl save\n";
		2459	}
		2460
		2461	sub post_cleanup {
		2462	my ($make_core) = @_;
		2463
		2464	warn Carp::longmess "post_cleanup backtrace"
		2465	if $make_core;
		2466	}
		2467
1056	sub _perl_reload(&) {	2468	sub reload() {
1057	my ($msg) = @_;	2469	# can/must only be called in main
		2470	if ($Coro::current != $Coro::main) {
		2471	warn "can only reload from main coroutine";
		2472	return;
		2473	}
1058		2474
1059	$msg->("reloading...");	2475	warn "reloading...";
1060		2476
1061	eval {	2477	warn "entering sync_job";
1062	# cancel all watchers	2478
		2479	cf::sync_job {
		2480	cf::write_runtime; # external watchdog should not bark
		2481	cf::emergency_save;
		2482	cf::write_runtime; # external watchdog should not bark
		2483
		2484	warn "syncing database to disk";
		2485	BDB::db_env_txn_checkpoint $DB_ENV;
		2486
		2487	# if anything goes wrong in here, we should simply crash as we already saved
		2488
		2489	warn "cancelling all WF_AUTOCANCEL watchers";
1063	$_->cancel for Event::all_watchers;	2490	for (Event::all_watchers) {
		2491	$_->cancel if $_->data & WF_AUTOCANCEL;
		2492	}
1064		2493
1065	# unload all extensions	2494	warn "flushing outstanding aio requests";
1066	for (@exts) {	2495	for (;;) {
1067	$msg->("unloading <$_>");	2496	BDB::flush;
1068	unload_extension $_;	2497	IO::AIO::flush;
		2498	Coro::cede;
		2499	last unless IO::AIO::nreqs || BDB::nreqs;
		2500	warn "iterate...";
		2501	}
		2502
		2503	++$RELOAD;
		2504
		2505	warn "cancelling all extension coros";
		2506	$_->cancel for values %EXT_CORO;
		2507	%EXT_CORO = ();
		2508
		2509	warn "removing commands";
		2510	%COMMAND = ();
		2511
		2512	warn "removing ext commands";
		2513	%EXTCMD = ();
		2514
		2515	warn "unloading/nuking all extensions";
		2516	for my $pkg (@EXTS) {
		2517	warn "... unloading $pkg";
		2518
		2519	if (my $cb = $pkg->can ("unload")) {
		2520	eval {
		2521	$cb->($pkg);
		2522	1
		2523	} or warn "$pkg unloaded, but with errors: $@";
1069	}	2524	}
1070		2525
		2526	warn "... nuking $pkg";
		2527	Symbol::delete_package $pkg;
		2528	}
		2529
1071	# unload all modules loaded from $LIBDIR	2530	warn "unloading all perl modules loaded from $LIBDIR";
1072	while (my ($k, $v) = each %INC) {	2531	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2532	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		2533
1075	$msg->("removing <$k>");	2534	warn "... unloading $k";
1076	delete $INC{$k};	2535	delete $INC{$k};
1077		2536
1078	$k =~ s/\.pm$//;	2537	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	2538	$k =~ s/\//::/g;
1080		2539
…		…
1083	}	2542	}
1084		2543
1085	Symbol::delete_package $k;	2544	Symbol::delete_package $k;
1086	}	2545	}
1087		2546
1088	# sync database to disk
1089	cf::db_sync;
1090
1091	# get rid of safe::, as good as possible	2547	warn "getting rid of safe::, as good as possible";
1092	Symbol::delete_package "safe::$_"	2548	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2549	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		2550
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"	2551	warn "unloading cf.pm \"a bit\"";
1099	delete $INC{"cf.pm"};	2552	delete $INC{"cf.pm"};
1100		2553
1101	# don't, removes xs symbols, too,	2554	# don't, removes xs symbols, too,
1102	# and global variables created in xs	2555	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	2556	#Symbol::delete_package __PACKAGE__;
1104		2557
1105	# reload cf.pm	2558	warn "unload completed, starting to reload now";
		2559
1106	$msg->("reloading cf.pm");	2560	warn "reloading cf.pm";
1107	require cf;	2561	require cf;
		2562	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		2563
1109	# load config and database again	2564	warn "loading config and database again";
1110	cf::cfg_load;	2565	cf::cfg_load;
1111	cf::db_load;
1112		2566
1113	# load extensions	2567	warn "loading extensions";
1114	$msg->("load extensions");
1115	cf::load_extensions;	2568	cf::load_extensions;
1116		2569
1117	# reattach attachments to objects	2570	warn "reattaching attachments to objects/players";
1118	$msg->("reattach");	2571	_global_reattach; # objects, sockets
1119	_global_reattach;	2572	warn "reattaching attachments to maps";
		2573	reattach $_ for values %MAP;
		2574	warn "reattaching attachments to players";
		2575	reattach $_ for values %PLAYER;
		2576
		2577	warn "loading reloadable resources";
		2578	reload_resources;
		2579
		2580	warn "leaving sync_job";
		2581
		2582	1
		2583	} or do {
		2584	warn $@;
		2585	warn "error while reloading, exiting.";
		2586	exit 1;
1120	};	2587	};
1121	$msg->($@) if $@;
1122		2588
1123	$msg->("reloaded");	2589	warn "reloaded";
1124	};	2590	};
1125		2591
1126	sub perl_reload() {	2592	our $RELOAD_WATCHER; # used only during reload
1127	_perl_reload {
1128	warn $_[0];
1129	print "$_[0]\n";
1130	};
1131	}
1132		2593
1133	register_command "perl-reload", 0, sub {	2594	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	2595	my ($who, $arg) = @_;
1135		2596
1136	if ($who->flag (FLAG_WIZ)) {	2597	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	2598	$who->message ("reloading server.");
1138	warn $_[0];	2599
1139	$who->message ($_[0]);	2600	# doing reload synchronously and two reloads happen back-to-back,
		2601	# coro crashes during coro_state_free->destroy here.
		2602
		2603	$RELOAD_WATCHER ||= Event->timer (
		2604	reentrant => 0,
		2605	after => 0,
		2606	data => WF_AUTOCANCEL,
		2607	cb => sub {
		2608	reload;
		2609	undef $RELOAD_WATCHER;
		2610	},
1140	};	2611	);
1141	}	2612	}
1142	};	2613	};
1143		2614
1144	register "<global>", __PACKAGE__;
1145
1146	unshift @INC, $LIBDIR;	2615	unshift @INC, $LIBDIR;
1147		2616
		2617	my $bug_warning = 0;
		2618
1148	$TICK_WATCHER = Event->timer (	2619	$TICK_WATCHER = Event->timer (
		2620	reentrant => 0,
		2621	parked => 1,
1149	prio => 1,	2622	prio => 0,
1150	at => $NEXT_TICK || 1,	2623	at => $NEXT_TICK || $TICK,
		2624	data => WF_AUTOCANCEL,
1151	cb => sub {	2625	cb => sub {
		2626	if ($Coro::current != $Coro::main) {
		2627	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2628	unless ++$bug_warning > 10;
		2629	return;
		2630	}
		2631
		2632	$NOW = Event::time;
		2633
1152	cf::server_tick; # one server iteration	2634	cf::server_tick; # one server iteration
1153		2635	$RUNTIME += $TICK;
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;	2636	$NEXT_TICK += $TICK;
1156		2637
		2638	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2639	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2640	Coro::async_pool {
		2641	write_runtime
		2642	or warn "ERROR: unable to write runtime file: $!";
		2643	};
		2644	}
		2645
		2646	$WAIT_FOR_TICK->broadcast;
		2647	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2648
		2649	# my $AFTER = Event::time;
		2650	# warn $AFTER - $NOW;#d#
		2651
1157	# if we are delayed by four ticks, skip them all	2652	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2653	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1159		2654
1160	$TICK_WATCHER->at ($NEXT_TICK);	2655	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	2656	$TICK_WATCHER->start;
1162	},	2657	},
1163	);	2658	);
1164		2659
		2660	{
		2661	BDB::max_poll_time $TICK * 0.1;
		2662	$BDB_POLL_WATCHER = Event->io (
		2663	reentrant => 0,
		2664	fd => BDB::poll_fileno,
		2665	poll => 'r',
		2666	prio => 0,
		2667	data => WF_AUTOCANCEL,
		2668	cb => \&BDB::poll_cb,
		2669	);
		2670	BDB::min_parallel 8;
		2671
		2672	BDB::set_sync_prepare {
		2673	my $status;
		2674	my $current = $Coro::current;
		2675	(
		2676	sub {
		2677	$status = $!;
		2678	$current->ready; undef $current;
		2679	},
		2680	sub {
		2681	Coro::schedule while defined $current;
		2682	$! = $status;
		2683	},
		2684	)
		2685	};
		2686
		2687	unless ($DB_ENV) {
		2688	$DB_ENV = BDB::db_env_create;
		2689
		2690	cf::sync_job {
		2691	eval {
		2692	BDB::db_env_open
		2693	$DB_ENV,
		2694	$BDB_ENV_DIR,
		2695	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2696	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2697	0666;
		2698
		2699	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2700
		2701	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2702	$DB_ENV->set_lk_detect;
		2703	};
		2704
		2705	cf::cleanup "db_env_open(db): $@" if $@;
		2706	};
		2707	}
		2708	}
		2709
		2710	{
		2711	IO::AIO::min_parallel 8;
		2712
		2713	undef $Coro::AIO::WATCHER;
		2714	IO::AIO::max_poll_time $TICK * 0.1;
		2715	$AIO_POLL_WATCHER = Event->io (
		2716	reentrant => 0,
		2717	data => WF_AUTOCANCEL,
		2718	fd => IO::AIO::poll_fileno,
		2719	poll => 'r',
		2720	prio => 6,
		2721	cb => \&IO::AIO::poll_cb,
		2722	);
		2723	}
		2724
		2725	END { cf::emergency_save }
		2726
1165	1	2727	1
1166		2728

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