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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.90 by root, Sat Dec 16 04:22:13 2006 UTC vs.
Revision 1.238 by root, Sat Apr 14 07:23:00 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
10	use IO::AIO ();	14	use Coro 3.52 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21	use Coro::Storable;
		22
		23	use BDB ();
		24	use Data::Dumper;
		25	use Digest::MD5;
		26	use Fcntl;
11	use YAML::Syck ();	27	use YAML::Syck ();
		28	use IO::AIO 2.32 ();
12	use Time::HiRes;	29	use Time::HiRes;
13	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
14	$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
15		39
16	# 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?
17	$YAML::Syck::ImplicitUnicode = 1;	41	$YAML::Syck::ImplicitUnicode = 1;
18		42
19	use strict;	43	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		44
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	45	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		46
23	our %COMMAND = ();	47	our %COMMAND = ();
24	our %COMMAND_TIME = ();	48	our %COMMAND_TIME = ();
		49
		50	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	51	our %EXTCMD = ();
		52	our %EXT_CORO = (); # coroutines bound to extensions
		53	our %EXT_MAP = (); # pluggable maps
26		54
27	_init_vars;	55	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	56	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	57	our $LIBDIR = datadir . "/ext";
31		58
32	our $TICK = MAX_TIME * 1e-6;	59	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	60	our $TICK_WATCHER;
		61	our $AIO_POLL_WATCHER;
		62	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	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;
35		69
36	our %CFG;	70	our %CFG;
37		71
38	our $UPTIME; $UPTIME ||= time;	72	our $UPTIME; $UPTIME ||= time;
		73	our $RUNTIME;
		74
		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;
39		107
40	#############################################################################	108	#############################################################################
41		109
42	=head2 GLOBAL VARIABLES	110	=head2 GLOBAL VARIABLES
43		111
44	=over 4	112	=over 4
45		113
46	=item $cf::UPTIME	114	=item $cf::UPTIME
47		115
48	The timestamp of the server start (so not actually an uptime).	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.
49		122
50	=item $cf::LIBDIR	123	=item $cf::LIBDIR
51		124
52	The perl library directory, where extensions and cf-specific modules can	125	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	126	be found. It will be added to C<@INC> automatically.
54		127
		128	=item $cf::NOW
		129
		130	The time of the last (current) server tick.
		131
55	=item $cf::TICK	132	=item $cf::TICK
56		133
57	The interval between server ticks, in seconds.	134	The interval between server ticks, in seconds.
58		135
59	=item %cf::CFG	136	=item %cf::CFG
60		137
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	138	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	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.
63		147
64	=back	148	=back
65		149
66	=cut	150	=cut
67		151
68	BEGIN {	152	BEGIN {
69	*CORE::GLOBAL::warn = sub {	153	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	154	my $msg = join "", @_;
		155	utf8::encode $msg;
		156
71	$msg .= "\n"	157	$msg .= "\n"
72	unless $msg =~ /\n$/;	158	unless $msg =~ /\n$/;
73		159
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	160	LOG llevError, $msg;
76	};	161	};
77	}	162	}
78		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';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	169	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
80		170
81	# 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
82	# within the Safe compartment.	172	# within the Safe compartment.
83	for my $pkg (qw(	173	for my $pkg (qw(
		174	cf::global cf::attachable
84	cf::object cf::object::player	175	cf::object cf::object::player
85	cf::client cf::player	176	cf::client cf::player
86	cf::arch cf::living	177	cf::arch cf::living
87	cf::map cf::party cf::region	178	cf::map cf::party cf::region
88	)) {	179	)) {
…		…
92		183
93	$Event::DIED = sub {	184	$Event::DIED = sub {
94	warn "error in event callback: @_";	185	warn "error in event callback: @_";
95	};	186	};
96		187
97	my %ext_pkg;
98	my @exts;
99	my @hook;
100
101	=head2 UTILITY FUNCTIONS	188	=head2 UTILITY FUNCTIONS
102		189
103	=over 4	190	=over 4
104		191
105	=cut	192	=item dumpval $ref
106		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
107	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
108		216
109	=item $ref = cf::from_json $json	217	=item $ref = cf::from_json $json
110		218
111	Converts a JSON string into the corresponding perl data structure.	219	Converts a JSON string into the corresponding perl data structure.
112		220
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	221	=item $json = cf::to_json $ref
121		222
122	Converts a perl data structure into its JSON representation.	223	Converts a perl data structure into its JSON representation.
123		224
124	=cut	225	=item cf::lock_wait $string
125		226
126	sub to_json($) {	227	Wait until the given lock is available. See cf::lock_acquire.
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	228
128	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 });
129	}	389	}
130		390
131	=back	391	=back
132		392
133	=cut	393	=cut
134		394
135	#############################################################################	395	#############################################################################
136		396
137	=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+).
138		406
139	=over 4	407	=over 4
140		408
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)	409	=item $attachable->attach ($attachment, key => $value...)
154		410
155	=item $map->detach ($attachment)	411	=item $attachable->detach ($attachment)
156		412
157	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.
158		415
159	=item $bool = $object->attached ($name)	416	Example, attach a minesweeper attachment to the given object, making it a
		417	10x10 minesweeper game:
160		418
161	=item $bool = $player->attached ($name)	419	$obj->attach (minesweeper => width => 10, height => 10);
162		420
163	=item $bool = $map->attached ($name)	421	=item $bool = $attachable->attached ($name)
164		422
165	Checks wether the named attachment is currently attached to the object.	423	Checks wether the named attachment is currently attached to the object.
166		424
167	=item cf::attach_global ...	425	=item cf::CLASS->attach ...
168		426
169	Attach handlers for global events.	427	=item cf::CLASS->detach ...
170		428
171	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
172	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:
173		463
174	=over 4	464	=over 4
175		465
176	=item prio => $number	466	=item prio => $number
177		467
…		…
179	by another C<prio> setting). Lower priority handlers get executed	469	by another C<prio> setting). Lower priority handlers get executed
180	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
181	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
182	unless you know what you are doing.	472	unless you know what you are doing.
183		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
184	=item on_I<event> => \&cb	480	=item on_I<event> => \&cb
185		481
186	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
187	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
188	handlers are recognised generally depends on the type of object these	484	handlers are recognised generally depends on the type of object these
…		…
197	package and register them. Only handlers for eevents supported by the	493	package and register them. Only handlers for eevents supported by the
198	object/class are recognised.	494	object/class are recognised.
199		495
200	=back	496	=back
201		497
202	=item cf::attach_to_type $object_type, $subtype, ...	498	Example, define an attachment called "sockpuppet" that calls the given
		499	event handler when a monster attacks:
203		500
204	Attach handlers for a specific object type (e.g. TRANSPORT) and	501	cf::object::attachment sockpuppet =>
205	subtype. If C<$subtype> is zero or undef, matches all objects of the given	502	on_skill_attack => sub {
206	type.	503	my ($self, $victim) = @_;
207		504	...
208	=item cf::attach_to_objects ...
209
210	Attach handlers to all objects. Do not use this except for debugging or
211	very rare events, as handlers are (obviously) called for I<all> objects in
212	the game.
213
214	=item cf::attach_to_players ...
215
216	Attach handlers to all players.
217
218	=item cf::attach_to_maps ...
219
220	Attach handlers to all maps.
221
222	=item cf:register_attachment $name, ...
223
224	Register an attachment by name through which objects can refer to this
225	attachment.
226
227	=item cf:register_player_attachment $name, ...
228
229	Register an attachment by name through which players can refer to this
230	attachment.
231
232	=item cf:register_map_attachment $name, ...
233
234	Register an attachment by name through which maps can refer to this
235	attachment.
236
237	=cut
238
239	# the following variables are defined in .xs and must not be re-created
240	our @CB_GLOBAL = (); # registry for all global events
241	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
242	our @CB_PLAYER = ();
243	our @CB_TYPE = (); # registry for type (cf-object class) based events
244	our @CB_MAP = ();
245
246	my %attachment;
247
248	sub _attach_cb($\%$$$) {
249	my ($registry, $undo, $event, $prio, $cb) = @_;
250
251	use sort 'stable';
252
253	$cb = [$prio, $cb];
254
255	@{$registry->[$event]} = sort
256	{ $a->[0] cmp $b->[0] }
257	@{$registry->[$event] || []}, $cb;
258
259	push @{$undo->{cb}}, [$event, $cb];
260	}
261
262	# attach handles attaching event callbacks
263	# the only thing the caller has to do is pass the correct
264	# registry (== where the callback attaches to).
265	sub _attach(\@$@) {
266	my ($registry, $klass, @arg) = @_;
267
268	my $prio = 0;
269
270	my %undo = (
271	registry => $registry,
272	cb => [],
273	);
274
275	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
276
277	while (@arg) {
278	my $type = shift @arg;
279
280	if ($type eq "prio") {
281	$prio = shift @arg;
282
283	} elsif ($type eq "package") {
284	my $pkg = shift @arg;
285
286	while (my ($name, $id) = each %cb_id) {
287	if (my $cb = $pkg->can ($name)) {
288	_attach_cb $registry, %undo, $id, $prio, $cb;
289	}
290	}	505	}
291
292	} elsif (exists $cb_id{$type}) {
293	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
294
295	} elsif (ref $type) {
296	warn "attaching objects not supported, ignoring.\n";
297
298	} else {
299	shift @arg;
300	warn "attach argument '$type' not supported, ignoring.\n";
301	}
302	}
303
304	\%undo
305	}
306
307	sub _attach_attachment {
308	my ($obj, $name, %arg) = @_;
309
310	return if exists $obj->{_attachment}{$name};
311
312	my $res;
313
314	if (my $attach = $attachment{$name}) {
315	my $registry = $obj->registry;
316
317	for (@$attach) {
318	my ($klass, @attach) = @$_;
319	$res = _attach @$registry, $klass, @attach;
320	}
321
322	$obj->{$name} = \%arg;
323	} else {
324	warn "object uses attachment '$name' that is not available, postponing.\n";
325	}
326
327	$obj->{_attachment}{$name} = undef;
328
329	$res->{attachment} = $name;
330	$res
331	}
332
333	*cf::object::attach =
334	*cf::player::attach =
335	*cf::map::attach = sub {
336	my ($obj, $name, %arg) = @_;
337
338	_attach_attachment $obj, $name, %arg;
339	};
340
341	# all those should be optimised
342	*cf::object::detach =
343	*cf::player::detach =
344	*cf::map::detach = sub {
345	my ($obj, $name) = @_;
346
347	delete $obj->{_attachment}{$name};
348	reattach ($obj);
349	};
350
351	*cf::object::attached =
352	*cf::player::attached =
353	*cf::map::attached = sub {
354	my ($obj, $name) = @_;
355
356	exists $obj->{_attachment}{$name}
357	};
358
359	sub attach_global {
360	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
361	}
362
363	sub attach_to_type {
364	my $type = shift;
365	my $subtype = shift;
366
367	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
368	}
369
370	sub attach_to_objects {
371	_attach @CB_OBJECT, KLASS_OBJECT, @_
372	}
373
374	sub attach_to_players {
375	_attach @CB_PLAYER, KLASS_PLAYER, @_
376	}
377
378	sub attach_to_maps {
379	_attach @CB_MAP, KLASS_MAP, @_
380	}
381
382	sub register_attachment {
383	my $name = shift;
384
385	$attachment{$name} = [[KLASS_OBJECT, @_]];
386	}
387
388	sub register_player_attachment {
389	my $name = shift;
390
391	$attachment{$name} = [[KLASS_PLAYER, @_]];
392	}
393
394	sub register_map_attachment {
395	my $name = shift;
396
397	$attachment{$name} = [[KLASS_MAP, @_]];
398	}
399
400	our $override;
401	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
402
403	sub override {
404	$override = 1;
405	@invoke_results = ();
406	}
407
408	sub do_invoke {
409	my $event = shift;
410	my $callbacks = shift;
411
412	@invoke_results = ();
413
414	local $override;
415
416	for (@$callbacks) {
417	eval { &{$_->[1]} };
418
419	if ($@) {
420	warn "$@";
421	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
422	override;
423	}
424
425	return 1 if $override;
426	}
427
428	0	506	}
429	}
430		507
431	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	508	=item $attachable->valid
432
433	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
434
435	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
436
437	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
438
439	Generate a global/object/player/map-specific event with the given arguments.
440
441	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
442	removed in future versions), and there is no public API to access override
443	results (if you must, access C<@cf::invoke_results> directly).
444
445	=back
446
447	=cut
448
449	#############################################################################
450
451	=head2 METHODS VALID FOR ALL CORE OBJECTS
452
453	=over 4
454
455	=item $object->valid, $player->valid, $map->valid
456		509
457	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
458	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
459	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
460	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
461	exception.	514	exception.
462		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
463	=back	705	=back
464		706
465	=cut	707	=cut
466
467	*cf::object::valid =
468	*cf::player::valid =
469	*cf::map::valid = \&cf::_valid;
470		708
471	#############################################################################	709	#############################################################################
472	# object support	710	# object support
473		711
474	sub instantiate {
475	my ($obj, $data) = @_;
476
477	$data = from_json $data;
478
479	for (@$data) {
480	my ($name, $args) = @$_;
481
482	$obj->attach ($name, %{$args || {} });
483	}
484	}
485
486	# basically do the same as instantiate, without calling instantiate
487	sub reattach {	712	sub reattach {
		713	# basically do the same as instantiate, without calling instantiate
488	my ($obj) = @_;	714	my ($obj) = @_;
		715
		716	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		717
489	my $registry = $obj->registry;	718	my $registry = $obj->registry;
490		719
491	@$registry = ();	720	@$registry = ();
492		721
493	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	722	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
494		723
495	for my $name (keys %{ $obj->{_attachment} || {} }) {	724	for my $name (keys %{ $obj->{_attachment} || {} }) {
496	if (my $attach = $attachment{$name}) {	725	if (my $attach = $attachment{$name}) {
497	for (@$attach) {	726	for (@$attach) {
498	my ($klass, @attach) = @$_;	727	my ($klass, @attach) = @$_;
499	_attach @$registry, $klass, @attach;	728	_attach $registry, $klass, @attach;
500	}	729	}
501	} else {	730	} else {
502	warn "object uses attachment '$name' that is not available, postponing.\n";	731	warn "object uses attachment '$name' that is not available, postponing.\n";
503	}	732	}
504	}	733	}
505	}	734	}
506		735
507	sub object_freezer_save {	736	cf::attachable->attach (
508	my ($filename, $rdata, $objs) = @_;
509
510	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;
513
514	if (open my $fh, ">:raw", "$filename~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
522	close $fh;
523	rename "$filename.pst~", "$filename.pst";
524	} else {
525	unlink "$filename.pst";
526	}
527
528	rename "$filename~", $filename;
529	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;
534	unlink "$filename.pst";
535	}
536	}
537
538	sub object_freezer_as_string {
539	my ($rdata, $objs) = @_;
540
541	use Data::Dumper;
542
543	$$rdata . Dumper $objs
544	}
545
546	sub object_thawer_load {
547	my ($filename) = @_;
548
549	local $/;
550
551	my $av;
552
553	#TODO: use sysread etc.
554	if (open my $data, "<:raw:perlio", $filename) {
555	$data = <$data>;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };
558	}
559	return ($data, $av);
560	}
561
562	()
563	}
564
565	attach_to_objects
566	prio => -1000000,	737	prio => -1000000,
		738	on_instantiate => sub {
		739	my ($obj, $data) = @_;
		740
		741	$data = from_json $data;
		742
		743	for (@$data) {
		744	my ($name, $args) = @$_;
		745
		746	$obj->attach ($name, %{$args || {} });
		747	}
		748	},
		749	on_reattach => \&reattach,
567	on_clone => sub {	750	on_clone => sub {
568	my ($src, $dst) = @_;	751	my ($src, $dst) = @_;
569		752
570	@{$dst->registry} = @{$src->registry};	753	@{$dst->registry} = @{$src->registry};
571		754
572	%$dst = %$src;	755	%$dst = %$src;
573		756
574	%{$dst->{_attachment}} = %{$src->{_attachment}}	757	%{$dst->{_attachment}} = %{$src->{_attachment}}
575	if exists $src->{_attachment};	758	if exists $src->{_attachment};
576	},	759	},
577	;	760	);
		761
		762	sub object_freezer_save {
		763	my ($filename, $rdata, $objs) = @_;
		764
		765	sync_job {
		766	if (length $$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	}
578		826
579	#############################################################################	827	#############################################################################
580	# command handling &c	828	# command handling &c
581		829
582	=item cf::register_command $name => \&callback($ob,$args);	830	=item cf::register_command $name => \&callback($ob,$args);
…		…
605	=cut	853	=cut
606		854
607	sub register_extcmd {	855	sub register_extcmd {
608	my ($name, $cb) = @_;	856	my ($name, $cb) = @_;
609		857
610	my $caller = caller;
611	#warn "registering extcmd '$name' to '$caller'";
612
613	$EXTCMD{$name} = [$cb, $caller];	858	$EXTCMD{$name} = $cb;
614	}	859	}
615		860
616	attach_to_players	861	cf::player->attach (
617	on_command => sub {	862	on_command => sub {
618	my ($pl, $name, $params) = @_;	863	my ($pl, $name, $params) = @_;
619		864
620	my $cb = $COMMAND{$name}	865	my $cb = $COMMAND{$name}
621	or return;	866	or return;
…		…
631		876
632	my $msg = eval { from_json $buf };	877	my $msg = eval { from_json $buf };
633		878
634	if (ref $msg) {	879	if (ref $msg) {
635	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	880	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
636	if (my %reply = $cb->[0]->($pl, $msg)) {	881	if (my %reply = $cb->($pl, $msg)) {
637	$pl->ext_reply ($msg->{msgid}, %reply);	882	$pl->ext_reply ($msg->{msgid}, %reply);
638	}	883	}
639	}	884	}
640	} else {	885	} else {
641	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	886	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
642	}	887	}
643		888
644	cf::override;	889	cf::override;
645	},	890	},
646	;	891	);
647
648	sub register {
649	my ($base, $pkg) = @_;
650
651	#TODO
652	}
653		892
654	sub load_extension {	893	sub load_extension {
655	my ($path) = @_;	894	my ($path) = @_;
656		895
657	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	896	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
658	my $base = $1;	897	my $base = $1;
659	my $pkg = $1;	898	my $pkg = $1;
660	$pkg =~ s/[^[:word:]]/_/g;	899	$pkg =~ s/[^[:word:]]/_/g;
661	$pkg = "ext::$pkg";	900	$pkg = "ext::$pkg";
662		901
663	warn "loading '$path' into '$pkg'\n";	902	warn "... loading '$path' into '$pkg'\n";
664		903
665	open my $fh, "<:utf8", $path	904	open my $fh, "<:utf8", $path
666	or die "$path: $!";	905	or die "$path: $!";
667		906
668	my $source =	907	my $source =
669	"package $pkg; use strict; use utf8;\n"	908	"package $pkg; use strict; use utf8;\n"
670	. "#line 1 \"$path\"\n{\n"	909	. "#line 1 \"$path\"\n{\n"
671	. (do { local $/; <$fh> })	910	. (do { local $/; <$fh> })
672	. "\n};\n1";	911	. "\n};\n1";
673		912
674	eval $source	913	unless (eval $source) {
675	or die $@ ? "$path: $@\n"	914	my $msg = $@ ? "$path: $@\n"
676	: "extension disabled.\n";	915	: "extension disabled.\n";
677		916	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
678	push @exts, $pkg;	917	warn $@;
679	$ext_pkg{$base} = $pkg;	918	warn "mandatory extension failed to load, exiting.\n";
680		919	exit 1;
681	# no strict 'refs';	920	}
682	# @{"$pkg\::ISA"} = ext::;	921	die $@;
683
684	register $base, $pkg;
685	}
686
687	sub unload_extension {
688	my ($pkg) = @_;
689
690	warn "removing extension $pkg\n";
691
692	# remove hooks
693	#TODO
694	# for my $idx (0 .. $#PLUGIN_EVENT) {
695	# delete $hook[$idx]{$pkg};
696	# }	922	}
697		923
698	# remove commands	924	push @EXTS, $pkg;
699	for my $name (keys %COMMAND) {
700	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
701
702	if (@cb) {
703	$COMMAND{$name} = \@cb;
704	} else {
705	delete $COMMAND{$name};
706	}
707	}
708
709	# remove extcmds
710	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
711	delete $EXTCMD{$name};
712	}
713
714	if (my $cb = $pkg->can ("unload")) {
715	eval {
716	$cb->($pkg);
717	1
718	} or warn "$pkg unloaded, but with errors: $@";
719	}
720
721	Symbol::delete_package $pkg;
722	}	925	}
723		926
724	sub load_extensions {	927	sub load_extensions {
725	for my $ext (<$LIBDIR/*.ext>) {	928	for my $ext (<$LIBDIR/*.ext>) {
726	next unless -r $ext;	929	next unless -r $ext;
…		…
730	} or warn "$ext not loaded: $@";	933	} or warn "$ext not loaded: $@";
731	}	934	}
732	}	935	}
733		936
734	#############################################################################	937	#############################################################################
735	# load/save/clean perl data associated with a map
736		938
737	*cf::mapsupport::on_clean = sub {	939	=head2 CORE EXTENSIONS
		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	=head3 cf::region
		1165
		1166	=over 4
		1167
		1168	=cut
		1169
		1170	package cf::region;
		1171
		1172	=item cf::region::find_by_path $path
		1173
		1174	Tries to decuce the probable region for a map knowing only its path.
		1175
		1176	=cut
		1177
		1178	sub find_by_path($) {
		1179	my ($path) = @_;
		1180
		1181	my ($match, $specificity);
		1182
		1183	for my $region (list) {
		1184	if ($region->match && $path =~ $region->match) {
		1185	($match, $specificity) = ($region, $region->specificity)
		1186	if $region->specificity > $specificity;
		1187	}
		1188	}
		1189
		1190	$match
		1191	}
		1192
		1193	=back
		1194
		1195	=head3 cf::map
		1196
		1197	=over 4
		1198
		1199	=cut
		1200
		1201	package cf::map;
		1202
		1203	use Fcntl;
		1204	use Coro::AIO;
		1205
		1206	use overload
		1207	'""' => \&as_string,
		1208	fallback => 1;
		1209
		1210	our $MAX_RESET = 3600;
		1211	our $DEFAULT_RESET = 3000;
		1212
		1213	sub generate_random_map {
		1214	my ($self, $rmp) = @_;
		1215	# mit "rum" bekleckern, nicht
		1216	$self->_create_random_map (
		1217	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1218	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1219	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1220	$rmp->{exit_on_final_map},
		1221	$rmp->{xsize}, $rmp->{ysize},
		1222	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1223	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1224	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1225	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1226	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1227	(cf::region::find $rmp->{region}), $rmp->{custom}
		1228	)
		1229	}
		1230
		1231	=item cf::map->register ($regex, $prio)
		1232
		1233	Register a handler for the map path matching the given regex at the
		1234	givne priority (higher is better, built-in handlers have priority 0, the
		1235	default).
		1236
		1237	=cut
		1238
		1239	sub register {
		1240	my (undef, $regex, $prio) = @_;
		1241	my $pkg = caller;
		1242
		1243	no strict;
		1244	push @{"$pkg\::ISA"}, __PACKAGE__;
		1245
		1246	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1247	}
		1248
		1249	# also paths starting with '/'
		1250	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1251
		1252	sub thawer_merge {
		1253	my ($self, $merge) = @_;
		1254
		1255	# we have to keep some variables in memory intact
		1256	local $self->{path};
		1257	local $self->{load_path};
		1258	local $self->{deny_save};
		1259	local $self->{deny_reset};
		1260
		1261	$self->SUPER::thawer_merge ($merge);
		1262	}
		1263
		1264	sub normalise {
		1265	my ($path, $base) = @_;
		1266
		1267	$path = "$path"; # make sure its a string
		1268
		1269	$path =~ s/\.map$//;
		1270
		1271	# map plan:
		1272	#
		1273	# /! non-realised random map exit (special hack!)
		1274	# {... are special paths that are not being touched
		1275	# ?xxx/... are special absolute paths
		1276	# ?random/... random maps
		1277	# /... normal maps
		1278	# ~user/... per-player map of a specific user
		1279
		1280	$path =~ s/$PATH_SEP/\//go;
		1281
		1282	# treat it as relative path if it starts with
		1283	# something that looks reasonable
		1284	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1285	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1286
		1287	$base =~ s{[^/]+/?$}{};
		1288	$path = "$base/$path";
		1289	}
		1290
		1291	for ($path) {
		1292	redo if s{//}{/};
		1293	redo if s{/\.?/}{/};
		1294	redo if s{/[^/]+/\.\./}{/};
		1295	}
		1296
		1297	$path
		1298	}
		1299
		1300	sub new_from_path {
		1301	my (undef, $path, $base) = @_;
		1302
		1303	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1304
		1305	$path = normalise $path, $base;
		1306
		1307	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1308	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1309	my $self = bless cf::map::new, $pkg;
		1310	$self->{path} = $path; $self->path ($path);
		1311	$self->init; # pass $1 etc.
		1312	return $self;
		1313	}
		1314	}
		1315
		1316	Carp::carp "unable to resolve path '$path' (base '$base').";
		1317	()
		1318	}
		1319
		1320	sub init {
		1321	my ($self) = @_;
		1322
		1323	$self
		1324	}
		1325
		1326	sub as_string {
		1327	my ($self) = @_;
		1328
		1329	"$self->{path}"
		1330	}
		1331
		1332	# the displayed name, this is a one way mapping
		1333	sub visible_name {
		1334	&as_string
		1335	}
		1336
		1337	# the original (read-only) location
		1338	sub load_path {
		1339	my ($self) = @_;
		1340
		1341	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1342	}
		1343
		1344	# the temporary/swap location
		1345	sub save_path {
		1346	my ($self) = @_;
		1347
		1348	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1349	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1350	}
		1351
		1352	# the unique path, undef == no special unique path
		1353	sub uniq_path {
		1354	my ($self) = @_;
		1355
		1356	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1357	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1358	}
		1359
		1360	# and all this just because we cannot iterate over
		1361	# all maps in C++...
		1362	sub change_all_map_light {
		1363	my ($change) = @_;
		1364
		1365	$_->change_map_light ($change)
		1366	for grep $_->outdoor, values %cf::MAP;
		1367	}
		1368
		1369	sub unlink_save {
		1370	my ($self) = @_;
		1371
		1372	utf8::encode (my $save = $self->save_path);
		1373	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1374	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1375	}
		1376
		1377	sub load_header_from($) {
		1378	my ($self, $path) = @_;
		1379
		1380	utf8::encode $path;
		1381	#aio_open $path, O_RDONLY, 0
		1382	# or return;
		1383
		1384	$self->_load_header ($path)
		1385	or return;
		1386
		1387	$self->{load_path} = $path;
		1388
		1389	1
		1390	}
		1391
		1392	sub load_header_orig {
		1393	my ($self) = @_;
		1394
		1395	$self->load_header_from ($self->load_path)
		1396	}
		1397
		1398	sub load_header_temp {
		1399	my ($self) = @_;
		1400
		1401	$self->load_header_from ($self->save_path)
		1402	}
		1403
		1404	sub prepare_temp {
		1405	my ($self) = @_;
		1406
		1407	$self->last_access ((delete $self->{last_access})
		1408	|| $cf::RUNTIME); #d#
		1409	# safety
		1410	$self->{instantiate_time} = $cf::RUNTIME
		1411	if $self->{instantiate_time} > $cf::RUNTIME;
		1412	}
		1413
		1414	sub prepare_orig {
		1415	my ($self) = @_;
		1416
		1417	$self->{load_original} = 1;
		1418	$self->{instantiate_time} = $cf::RUNTIME;
		1419	$self->last_access ($cf::RUNTIME);
		1420	$self->instantiate;
		1421	}
		1422
		1423	sub load_header {
		1424	my ($self) = @_;
		1425
		1426	if ($self->load_header_temp) {
		1427	$self->prepare_temp;
		1428	} else {
		1429	$self->load_header_orig
		1430	or return;
		1431	$self->prepare_orig;
		1432	}
		1433
		1434	$self->default_region (cf::region::find_by_path $self->{path})
		1435	unless $self->default_region;
		1436
		1437	1
		1438	}
		1439
		1440	sub find;
		1441	sub find {
		1442	my ($path, $origin) = @_;
		1443
		1444	$path = normalise $path, $origin && $origin->path;
		1445
		1446	cf::lock_wait "map_find:$path";
		1447
		1448	$cf::MAP{$path} || do {
		1449	my $guard = cf::lock_acquire "map_find:$path";
		1450	my $map = new_from_path cf::map $path
		1451	or return;
		1452
		1453	$map->{last_save} = $cf::RUNTIME;
		1454
		1455	$map->load_header
		1456	or return;
		1457
		1458	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1459	# doing this can freeze the server in a sync job, obviously
		1460	#$cf::WAIT_FOR_TICK->wait;
		1461	$map->reset;
		1462	undef $guard;
		1463	return find $path;
		1464	}
		1465
		1466	$cf::MAP{$path} = $map
		1467	}
		1468	}
		1469
		1470	sub pre_load { }
		1471	sub post_load { }
		1472
		1473	sub load {
		1474	my ($self) = @_;
		1475
		1476	local $self->{deny_reset} = 1; # loading can take a long time
		1477
		1478	my $path = $self->{path};
		1479	my $guard = cf::lock_acquire "map_load:$path";
		1480
		1481	return if $self->in_memory != cf::MAP_SWAPPED;
		1482
		1483	$self->in_memory (cf::MAP_LOADING);
		1484
		1485	$self->alloc;
		1486
		1487	$self->pre_load;
		1488
		1489	$self->_load_objects ($self->{load_path}, 1)
		1490	or return;
		1491
		1492	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1493	if delete $self->{load_original};
		1494
		1495	if (my $uniq = $self->uniq_path) {
		1496	utf8::encode $uniq;
		1497	if (aio_open $uniq, O_RDONLY, 0) {
		1498	$self->clear_unique_items;
		1499	$self->_load_objects ($uniq, 0);
		1500	}
		1501	}
		1502
		1503	Coro::cede;
		1504
		1505	# now do the right thing for maps
		1506	$self->link_multipart_objects;
		1507
		1508	unless ($self->{deny_activate}) {
		1509	$self->decay_objects;
		1510	$self->fix_auto_apply;
		1511	$self->update_buttons;
		1512	Coro::cede;
		1513	$self->set_darkness_map;
		1514	$self->difficulty ($self->estimate_difficulty)
		1515	unless $self->difficulty;
		1516	Coro::cede;
		1517	$self->activate;
		1518	}
		1519
		1520	$self->post_load;
		1521
		1522	$self->in_memory (cf::MAP_IN_MEMORY);
		1523	}
		1524
		1525	sub customise_for {
		1526	my ($self, $ob) = @_;
		1527
		1528	return find "~" . $ob->name . "/" . $self->{path}
		1529	if $self->per_player;
		1530
		1531	$self
		1532	}
		1533
		1534	# find and load all maps in the 3x3 area around a map
		1535	sub load_diag {
738	my ($map) = @_;	1536	my ($map) = @_;
739		1537
740	my $path = $map->tmpname;	1538	my @diag; # diagonal neighbours
741	defined $path or return;
742		1539
743	unlink "$path.pst";	1540	for (0 .. 3) {
744	};	1541	my $neigh = $map->tile_path ($_)
		1542	or next;
		1543	$neigh = find $neigh, $map
		1544	or next;
		1545	$neigh->load;
745		1546
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	1547	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1548	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1549	}
747		1550
748	#############################################################################	1551	for (@diag) {
749	# load/save perl data associated with player->ob objects	1552	my $neigh = find @$_
750		1553	or next;
751	sub all_objects(@) {	1554	$neigh->load;
752	@_, map all_objects ($_->inv), @_	1555	}
753	}	1556	}
754		1557
755	# TODO: compatibility cruft, remove when no longer needed	1558	sub find_sync {
756	attach_to_players	1559	my ($path, $origin) = @_;
757	on_load => sub {
758	my ($pl, $path) = @_;
759		1560
760	for my $o (all_objects $pl->ob) {	1561	cf::sync_job { find $path, $origin }
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1562	}
762	$o->set_ob_key_value ("_perl_data");
763		1563
764	%$o = %{ Storable::thaw pack "H*", $value };	1564	sub do_load_sync {
		1565	my ($map) = @_;
		1566
		1567	cf::sync_job { $map->load };
		1568	}
		1569
		1570	our %MAP_PREFETCH;
		1571	our $MAP_PREFETCHER = undef;
		1572
		1573	sub find_async {
		1574	my ($path, $origin) = @_;
		1575
		1576	$path = normalise $path, $origin && $origin->{path};
		1577
		1578	if (my $map = $cf::MAP{$path}) {
		1579	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1580	}
		1581
		1582	undef $MAP_PREFETCH{$path};
		1583	$MAP_PREFETCHER ||= cf::async {
		1584	while (%MAP_PREFETCH) {
		1585	for my $path (keys %MAP_PREFETCH) {
		1586	my $map = find $path
		1587	or next;
		1588	$map->load;
		1589
		1590	delete $MAP_PREFETCH{$path};
765	}	1591	}
766	}	1592	}
		1593	undef $MAP_PREFETCHER;
		1594	};
		1595	$MAP_PREFETCHER->prio (6);
		1596
		1597	()
		1598	}
		1599
		1600	sub save {
		1601	my ($self) = @_;
		1602
		1603	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1604
		1605	$self->{last_save} = $cf::RUNTIME;
		1606
		1607	return unless $self->dirty;
		1608
		1609	my $save = $self->save_path; utf8::encode $save;
		1610	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1611
		1612	$self->{load_path} = $save;
		1613
		1614	return if $self->{deny_save};
		1615
		1616	local $self->{last_access} = $self->last_access;#d#
		1617
		1618	cf::async {
		1619	$_->contr->save for $self->players;
		1620	};
		1621
		1622	if ($uniq) {
		1623	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1624	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1625	} else {
		1626	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
767	},	1627	}
768	;	1628	}
769		1629
770	#############################################################################	1630	sub swap_out {
		1631	my ($self) = @_;
771		1632
772	=head2 CORE EXTENSIONS	1633	# save first because save cedes
		1634	$self->save;
773		1635
774	Functions and methods that extend core crossfire objects.	1636	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1637
		1638	return if $self->players;
		1639	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1640	return if $self->{deny_save};
		1641
		1642	$self->clear;
		1643	$self->in_memory (cf::MAP_SWAPPED);
		1644	}
		1645
		1646	sub reset_at {
		1647	my ($self) = @_;
		1648
		1649	# TODO: safety, remove and allow resettable per-player maps
		1650	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1651	return 1e99 if $self->{deny_reset};
		1652
		1653	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1654	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1655
		1656	$time + $to
		1657	}
		1658
		1659	sub should_reset {
		1660	my ($self) = @_;
		1661
		1662	$self->reset_at <= $cf::RUNTIME
		1663	}
		1664
		1665	sub reset {
		1666	my ($self) = @_;
		1667
		1668	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1669
		1670	return if $self->players;
		1671	return if $self->isa ("ext::map_per_player");#d#
		1672
		1673	warn "resetting map ", $self->path;#d#
		1674
		1675	$self->in_memory (cf::MAP_SWAPPED);
		1676
		1677	# need to save uniques path
		1678	unless ($self->{deny_save}) {
		1679	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1680
		1681	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1682	if $uniq;
		1683	}
		1684
		1685	delete $cf::MAP{$self->path};
		1686
		1687	$self->clear;
		1688
		1689	$_->clear_links_to ($self) for values %cf::MAP;
		1690
		1691	$self->unlink_save;
		1692	$self->destroy;
		1693	}
		1694
		1695	my $nuke_counter = "aaaa";
		1696
		1697	sub nuke {
		1698	my ($self) = @_;
		1699
		1700	delete $cf::MAP{$self->path};
		1701
		1702	$self->unlink_save;
		1703
		1704	bless $self, "cf::map";
		1705	delete $self->{deny_reset};
		1706	$self->{deny_save} = 1;
		1707	$self->reset_timeout (1);
		1708	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1709
		1710	$cf::MAP{$self->path} = $self;
		1711
		1712	$self->reset; # polite request, might not happen
		1713	}
		1714
		1715	=item cf::map::unique_maps
		1716
		1717	Returns an arrayref of paths of all shared maps that have
		1718	instantiated unique items. May block.
		1719
		1720	=cut
		1721
		1722	sub unique_maps() {
		1723	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1724	or return;
		1725
		1726	my @paths;
		1727
		1728	for (@$files) {
		1729	utf8::decode $_;
		1730	next if /\.pst$/;
		1731	next unless /^$PATH_SEP/o;
		1732
		1733	push @paths, cf::map::normalise $_;
		1734	}
		1735
		1736	\@paths
		1737	}
		1738
		1739	package cf;
		1740
		1741	=back
		1742
		1743	=head3 cf::object
		1744
		1745	=cut
		1746
		1747	package cf::object;
775		1748
776	=over 4	1749	=over 4
777		1750
778	=item cf::player::exists $login	1751	=item $ob->inv_recursive
779		1752
780	Returns true when the given account exists.	1753	Returns the inventory of the object _and_ their inventories, recursively.
781		1754
782	=cut	1755	=cut
783		1756
784	sub cf::player::exists($) {	1757	sub inv_recursive_;
785	cf::player::find $_[0]	1758	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1759	map { $_, inv_recursive_ $_->inv } @_
787	}	1760	}
		1761
		1762	sub inv_recursive {
		1763	inv_recursive_ inv $_[0]
		1764	}
		1765
		1766	package cf;
		1767
		1768	=back
		1769
		1770	=head3 cf::object::player
		1771
		1772	=over 4
788		1773
789	=item $player_object->reply ($npc, $msg[, $flags])	1774	=item $player_object->reply ($npc, $msg[, $flags])
790		1775
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1776	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
792	can be C<undef>. Does the right thing when the player is currently in a	1777	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		1779
795	=cut	1780	=cut
796		1781
797	# rough implementation of a future "reply" method that works	1782	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	1783	# with dialog boxes.
		1784	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	1785	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	1786	my ($self, $npc, $msg, $flags) = @_;
801		1787
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		1789
…		…
807	$msg = $npc->name . " says: $msg" if $npc;	1793	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	1794	$self->message ($msg, $flags);
809	}	1795	}
810	}	1796	}
811		1797
812	=item $player->ext_reply ($msgid, $msgtype, %msg)
813
814	Sends an ext reply to the player.
815
816	=cut
817
818	sub cf::player::ext_reply($$$%) {
819	my ($self, $id, %msg) = @_;
820
821	$msg{msgid} = $id;
822
823	$self->send ("ext " . to_json \%msg);
824	}
825
826	=item $player_object->may ("access")	1798	=item $player_object->may ("access")
827		1799
828	Returns wether the given player is authorized to access resource "access"	1800	Returns wether the given player is authorized to access resource "access"
829	(e.g. "command_wizcast").	1801	(e.g. "command_wizcast").
830		1802
…		…
837	(ref $cf::CFG{"may_$access"}	1809	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1810	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	1811	: $cf::CFG{"may_$access"})
840	}	1812	}
841		1813
842	=cut	1814	=item $player_object->enter_link
843		1815
844	#############################################################################	1816	Freezes the player and moves him/her to a special map (C<{link}>).
		1817
		1818	The player should be reasonably safe there for short amounts of time. You
		1819	I<MUST> call C<leave_link> as soon as possible, though.
		1820
		1821	Will never block.
		1822
		1823	=item $player_object->leave_link ($map, $x, $y)
		1824
		1825	Moves the player out of the special C<{link}> map onto the specified
		1826	map. If the map is not valid (or omitted), the player will be moved back
		1827	to the location he/she was before the call to C<enter_link>, or, if that
		1828	fails, to the emergency map position.
		1829
		1830	Might block.
		1831
		1832	=cut
		1833
		1834	sub link_map {
		1835	unless ($LINK_MAP) {
		1836	$LINK_MAP = cf::map::find "{link}"
		1837	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1838	$LINK_MAP->load;
		1839	}
		1840
		1841	$LINK_MAP
		1842	}
		1843
		1844	sub cf::object::player::enter_link {
		1845	my ($self) = @_;
		1846
		1847	$self->deactivate_recursive;
		1848
		1849	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1850
		1851	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1852	if $self->map;
		1853
		1854	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1855	}
		1856
		1857	sub cf::object::player::leave_link {
		1858	my ($self, $map, $x, $y) = @_;
		1859
		1860	my $link_pos = delete $self->{_link_pos};
		1861
		1862	unless ($map) {
		1863	# restore original map position
		1864	($map, $x, $y) = @{ $link_pos || [] };
		1865	$map = cf::map::find $map;
		1866
		1867	unless ($map) {
		1868	($map, $x, $y) = @$EMERGENCY_POSITION;
		1869	$map = cf::map::find $map
		1870	or die "FATAL: cannot load emergency map\n";
		1871	}
		1872	}
		1873
		1874	($x, $y) = (-1, -1)
		1875	unless (defined $x) && (defined $y);
		1876
		1877	# use -1 or undef as default coordinates, not 0, 0
		1878	($x, $y) = ($map->enter_x, $map->enter_y)
		1879	if $x <=0 && $y <= 0;
		1880
		1881	$map->load;
		1882	$map->load_diag;
		1883
		1884	return unless $self->contr->active;
		1885	$self->activate_recursive;
		1886
		1887	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1888	$self->enter_map ($map, $x, $y);
		1889	}
		1890
		1891	cf::player->attach (
		1892	on_logout => sub {
		1893	my ($pl) = @_;
		1894
		1895	# abort map switching before logout
		1896	if ($pl->ob->{_link_pos}) {
		1897	cf::sync_job {
		1898	$pl->ob->leave_link
		1899	};
		1900	}
		1901	},
		1902	on_login => sub {
		1903	my ($pl) = @_;
		1904
		1905	# try to abort aborted map switching on player login :)
		1906	# should happen only on crashes
		1907	if ($pl->ob->{_link_pos}) {
		1908	$pl->ob->enter_link;
		1909	(async {
		1910	$pl->ob->reply (undef,
		1911	"There was an internal problem at your last logout, "
		1912	. "the server will try to bring you to your intended destination in a second.",
		1913	cf::NDI_RED);
		1914	# we need this sleep as the login has a concurrent enter_exit running
		1915	# and this sleep increases chances of the player not ending up in scorn
		1916	Coro::Timer::sleep 1;
		1917	$pl->ob->leave_link;
		1918	})->prio (2);
		1919	}
		1920	},
		1921	);
		1922
		1923	=item $player_object->goto ($path, $x, $y)
		1924
		1925	=cut
		1926
		1927	sub cf::object::player::goto {
		1928	my ($self, $path, $x, $y) = @_;
		1929
		1930	$self->enter_link;
		1931
		1932	(async {
		1933	my $map = eval {
		1934	my $map = cf::map::find $path;
		1935	$map = $map->customise_for ($self) if $map;
		1936	$map
		1937	} or
		1938	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1939
		1940	$self->leave_link ($map, $x, $y);
		1941	})->prio (1);
		1942	}
		1943
		1944	=item $player_object->enter_exit ($exit_object)
		1945
		1946	=cut
		1947
		1948	sub parse_random_map_params {
		1949	my ($spec) = @_;
		1950
		1951	my $rmp = { # defaults
		1952	xsize => (cf::rndm 15, 40),
		1953	ysize => (cf::rndm 15, 40),
		1954	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1955	#layout => string,
		1956	};
		1957
		1958	for (split /\n/, $spec) {
		1959	my ($k, $v) = split /\s+/, $_, 2;
		1960
		1961	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1962	}
		1963
		1964	$rmp
		1965	}
		1966
		1967	sub prepare_random_map {
		1968	my ($exit) = @_;
		1969
		1970	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1971
		1972	# all this does is basically replace the /! path by
		1973	# a new random map path (?random/...) with a seed
		1974	# that depends on the exit object
		1975
		1976	my $rmp = parse_random_map_params $exit->msg;
		1977
		1978	if ($exit->map) {
		1979	$rmp->{region} = $exit->region->name;
		1980	$rmp->{origin_map} = $exit->map->path;
		1981	$rmp->{origin_x} = $exit->x;
		1982	$rmp->{origin_y} = $exit->y;
		1983	}
		1984
		1985	$rmp->{random_seed} ||= $exit->random_seed;
		1986
		1987	my $data = cf::to_json $rmp;
		1988	my $md5 = Digest::MD5::md5_hex $data;
		1989	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1990
		1991	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1992	aio_write $fh, 0, (length $data), $data, 0;
		1993	undef $fh;
		1994	aio_rename "$meta~", $meta;
		1995
		1996	$exit->slaying ("?random/$md5");
		1997	$exit->msg (undef);
		1998	}
		1999	}
		2000
		2001	sub cf::object::player::enter_exit {
		2002	my ($self, $exit) = @_;
		2003
		2004	return unless $self->type == cf::PLAYER;
		2005
		2006	if ($exit->slaying eq "/!") {
		2007	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2008	# the problem is that $exit might not survive long enough
		2009	# so it needs to be done right now, right here
		2010	cf::sync_job { prepare_random_map $exit };
		2011	}
		2012
		2013	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2014	my $hp = $exit->stats->hp;
		2015	my $sp = $exit->stats->sp;
		2016
		2017	$self->enter_link;
		2018
		2019	(async {
		2020	$self->deactivate_recursive; # just to be sure
		2021	unless (eval {
		2022	$self->goto ($slaying, $hp, $sp);
		2023
		2024	1;
		2025	}) {
		2026	$self->message ("Something went wrong deep within the crossfire server. "
		2027	. "I'll try to bring you back to the map you were before. "
		2028	. "Please report this to the dungeon master!",
		2029	cf::NDI_UNIQUE | cf::NDI_RED);
		2030
		2031	warn "ERROR in enter_exit: $@";
		2032	$self->leave_link;
		2033	}
		2034	})->prio (1);
		2035	}
		2036
		2037	=head3 cf::client
		2038
		2039	=over 4
		2040
		2041	=item $client->send_drawinfo ($text, $flags)
		2042
		2043	Sends a drawinfo packet to the client. Circumvents output buffering so
		2044	should not be used under normal circumstances.
		2045
		2046	=cut
		2047
		2048	sub cf::client::send_drawinfo {
		2049	my ($self, $text, $flags) = @_;
		2050
		2051	utf8::encode $text;
		2052	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2053	}
		2054
		2055	=item $client->ext_event ($type, %msg)
		2056
		2057	Sends an exti event to the client.
		2058
		2059	=cut
		2060
		2061	sub cf::client::ext_event($$%) {
		2062	my ($self, $type, %msg) = @_;
		2063
		2064	$msg{msgtype} = "event_$type";
		2065	$self->send_packet ("ext " . cf::to_json \%msg);
		2066	}
		2067
		2068	=item $success = $client->query ($flags, "text", \&cb)
		2069
		2070	Queues a query to the client, calling the given callback with
		2071	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2072	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2073
		2074	Queries can fail, so check the return code. Or don't, as queries will become
		2075	reliable at some point in the future.
		2076
		2077	=cut
		2078
		2079	sub cf::client::query {
		2080	my ($self, $flags, $text, $cb) = @_;
		2081
		2082	return unless $self->state == ST_PLAYING
		2083	|| $self->state == ST_SETUP
		2084	|| $self->state == ST_CUSTOM;
		2085
		2086	$self->state (ST_CUSTOM);
		2087
		2088	utf8::encode $text;
		2089	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2090
		2091	$self->send_packet ($self->{query_queue}[0][0])
		2092	if @{ $self->{query_queue} } == 1;
		2093	}
		2094
		2095	cf::client->attach (
		2096	on_reply => sub {
		2097	my ($ns, $msg) = @_;
		2098
		2099	# this weird shuffling is so that direct followup queries
		2100	# get handled first
		2101	my $queue = delete $ns->{query_queue}
		2102	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2103
		2104	(shift @$queue)->[1]->($msg);
		2105	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2106
		2107	push @{ $ns->{query_queue} }, @$queue;
		2108
		2109	if (@{ $ns->{query_queue} } == @$queue) {
		2110	if (@$queue) {
		2111	$ns->send_packet ($ns->{query_queue}[0][0]);
		2112	} else {
		2113	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2114	}
		2115	}
		2116	},
		2117	);
		2118
		2119	=item $client->async (\&cb)
		2120
		2121	Create a new coroutine, running the specified callback. The coroutine will
		2122	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2123	or loss of connection).
		2124
		2125	=cut
		2126
		2127	sub cf::client::async {
		2128	my ($self, $cb) = @_;
		2129
		2130	my $coro = &Coro::async ($cb);
		2131
		2132	$coro->on_destroy (sub {
		2133	delete $self->{_coro}{$coro+0};
		2134	});
		2135
		2136	$self->{_coro}{$coro+0} = $coro;
		2137
		2138	$coro
		2139	}
		2140
		2141	cf::client->attach (
		2142	on_destroy => sub {
		2143	my ($ns) = @_;
		2144
		2145	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2146	},
		2147	);
		2148
		2149	=back
		2150
845		2151
846	=head2 SAFE SCRIPTING	2152	=head2 SAFE SCRIPTING
847		2153
848	Functions that provide a safe environment to compile and execute	2154	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	2155	snippets of perl code without them endangering the safety of the server
…		…
862		2168
863	# here we export the classes and methods available to script code	2169	# here we export the classes and methods available to script code
864		2170
865	=pod	2171	=pod
866		2172
867	The following fucntions and emthods are available within a safe environment:	2173	The following functions and methods are available within a safe environment:
868		2174
869	cf::object contr pay_amount pay_player	2175	cf::object contr pay_amount pay_player map
870	cf::object::player player	2176	cf::object::player player
871	cf::player peaceful	2177	cf::player peaceful
		2178	cf::map trigger
872		2179
873	=cut	2180	=cut
874		2181
875	for (	2182	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	2183	["cf::object" => qw(contr pay_amount pay_player map)],
877	["cf::object::player" => qw(player)],	2184	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	2185	["cf::player" => qw(peaceful)],
		2186	["cf::map" => qw(trigger)],
879	) {	2187	) {
880	no strict 'refs';	2188	no strict 'refs';
881	my ($pkg, @funs) = @$_;	2189	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2190	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	2191	for @funs;
…		…
963	The parameter C<$family> should best start with the name of the extension	2271	The parameter C<$family> should best start with the name of the extension
964	using it, it should be unique.	2272	using it, it should be unique.
965		2273
966	=over 4	2274	=over 4
967		2275
968	=item $hashref = cf::db_get $family
969
970	Return a hashref for use by the extension C<$family>, which can be
971	modified. After modifications, you have to call C<cf::db_dirty> or
972	C<cf::db_sync>.
973
974	=item $value = cf::db_get $family => $key	2276	=item $value = cf::db_get $family => $key
975		2277
976	Returns a single value from the database	2278	Returns a single value from the database.
977
978	=item cf::db_put $family => $hashref
979
980	Stores the given family hashref into the database. Updates are delayed, if
981	you want the data to be synced to disk immediately, use C<cf::db_sync>.
982		2279
983	=item cf::db_put $family => $key => $value	2280	=item cf::db_put $family => $key => $value
984		2281
985	Stores the given C<$value> in the family hash. Updates are delayed, if you	2282	Stores the given C<$value> in the family.
986	want the data to be synced to disk immediately, use C<cf::db_sync>.
987
988	=item cf::db_dirty
989
990	Marks the database as dirty, to be updated at a later time.
991
992	=item cf::db_sync
993
994	Immediately write the database to disk I<if it is dirty>.
995		2283
996	=cut	2284	=cut
997		2285
998	our $DB;	2286	our $DB;
999		2287
1000	{	2288	sub db_init {
		2289	unless ($DB) {
		2290	$DB = BDB::db_create $DB_ENV;
		2291
		2292	cf::sync_job {
		2293	eval {
		2294	$DB->set_flags (BDB::CHKSUM);
		2295
		2296	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2297	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2298	cf::cleanup "db_open(db): $!" if $!;
		2299	};
		2300	cf::cleanup "db_open(db): $@" if $@;
		2301	};
		2302
1001	my $path = cf::localdir . "/database.pst";	2303	my $path = cf::localdir . "/database.pst";
		2304	if (stat $path) {
		2305	cf::sync_job {
		2306	my $pst = Storable::retrieve $path;
1002		2307
1003	sub db_load() {	2308	cf::db_put (board => data => $pst->{board});
1004	warn "loading database $path\n";#d# remove later	2309	cf::db_put (guildrules => data => $pst->{guildrules});
1005	$DB = stat $path ? Storable::retrieve $path : { };	2310	cf::db_put (rent => balance => $pst->{rent}{balance});
1006	}	2311	BDB::db_env_txn_checkpoint $DB_ENV;
1007		2312
1008	my $pid;	2313	unlink $path;
1009
1010	sub db_save() {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;
1017	cf::_exit 0 if defined $pid;
1018	}	2314	};
1019	}
1020
1021	my $dirty;
1022
1023	sub db_sync() {
1024	db_save if $dirty;
1025	undef $dirty;
1026	}
1027
1028	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1029	db_sync;
1030	});
1031
1032	sub db_dirty() {
1033	$dirty = 1;
1034	$idle->start;
1035	}
1036
1037	sub db_get($;$) {
1038	@_ >= 2
1039	? $DB->{$_[0]}{$_[1]}
1040	: ($DB->{$_[0]} ||= { })
1041	}
1042
1043	sub db_put($$;$) {
1044	if (@_ >= 3) {
1045	$DB->{$_[0]}{$_[1]} = $_[2];
1046	} else {
1047	$DB->{$_[0]} = $_[1];
1048	}
1049	db_dirty;
1050	}
1051
1052	attach_global
1053	prio => 10000,
1054	on_cleanup => sub {
1055	db_sync;
1056	},	2315	}
1057	;	2316	}
		2317	}
		2318
		2319	sub db_get($$) {
		2320	my $key = "$_[0]/$_[1]";
		2321
		2322	cf::sync_job {
		2323	BDB::db_get $DB, undef, $key, my $data;
		2324
		2325	$! ? ()
		2326	: Compress::LZF::sthaw $data
		2327	}
		2328	}
		2329
		2330	sub db_put($$$) {
		2331	BDB::dbreq_pri 4;
		2332	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
1058	}	2333	}
1059		2334
1060	#############################################################################	2335	#############################################################################
1061	# the server's main()	2336	# the server's init and main functions
		2337
		2338	sub load_facedata {
		2339	my $path = sprintf "%s/facedata", cf::datadir;
		2340
		2341	warn "loading facedata from $path\n";
		2342
		2343	my $facedata;
		2344	0 < aio_load $path, $facedata
		2345	or die "$path: $!";
		2346
		2347	$facedata = Coro::Storable::thaw $facedata;
		2348
		2349	$facedata->{version} == 2
		2350	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2351
		2352	{
		2353	my $faces = $facedata->{faceinfo};
		2354
		2355	while (my ($face, $info) = each %$faces) {
		2356	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2357	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2358	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2359	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2360	Coro::cede;
		2361	}
		2362
		2363	while (my ($face, $info) = each %$faces) {
		2364	next unless $info->{smooth};
		2365	my $idx = cf::face::find $face
		2366	or next;
		2367	if (my $smooth = cf::face::find $info->{smooth}) {
		2368	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2369	} else {
		2370	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2371	}
		2372	Coro::cede;
		2373	}
		2374	}
		2375
		2376	{
		2377	my $anims = $facedata->{animinfo};
		2378
		2379	while (my ($anim, $info) = each %$anims) {
		2380	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2381	Coro::cede;
		2382	}
		2383
		2384	cf::anim::invalidate_all; # d'oh
		2385	}
		2386
		2387	1
		2388	}
		2389
		2390	sub reload_resources {
		2391	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2392	or die "unable to load regions file\n";#d#
		2393	load_facedata
		2394	or die "unable to load facedata\n";#d#
		2395	}
		2396
		2397	sub init {
		2398	reload_resources;
		2399	}
1062		2400
1063	sub cfg_load {	2401	sub cfg_load {
1064	open my $fh, "<:utf8", cf::confdir . "/config"	2402	open my $fh, "<:utf8", cf::confdir . "/config"
1065	or return;	2403	or return;
1066		2404
1067	local $/;	2405	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	2406	*CFG = YAML::Syck::Load <$fh>;
		2407
		2408	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2409
		2410	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2411	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2412
		2413	if (exists $CFG{mlockall}) {
		2414	eval {
		2415	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2416	and die "WARNING: m(un)lockall failed: $!\n";
		2417	};
		2418	warn $@ if $@;
		2419	}
1069	}	2420	}
1070		2421
1071	sub main {	2422	sub main {
		2423	# we must not ever block the main coroutine
		2424	local $Coro::idle = sub {
		2425	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2426	(async {
		2427	Event::one_event;
		2428	})->prio (Coro::PRIO_MAX);
		2429	};
		2430
1072	cfg_load;	2431	cfg_load;
1073	db_load;	2432	db_init;
1074	load_extensions;	2433	load_extensions;
		2434
		2435	$TICK_WATCHER->start;
1075	Event::loop;	2436	Event::loop;
1076	}	2437	}
1077		2438
1078	#############################################################################	2439	#############################################################################
1079	# initialisation	2440	# initialisation and cleanup
1080		2441
		2442	# install some emergency cleanup handlers
		2443	BEGIN {
		2444	for my $signal (qw(INT HUP TERM)) {
		2445	Event->signal (
		2446	reentrant => 0,
		2447	data => WF_AUTOCANCEL,
		2448	signal => $signal,
		2449	prio => 0,
		2450	cb => sub {
		2451	cf::cleanup "SIG$signal";
		2452	},
		2453	);
		2454	}
		2455	}
		2456
		2457	sub emergency_save() {
		2458	my $freeze_guard = cf::freeze_mainloop;
		2459
		2460	warn "enter emergency perl save\n";
		2461
		2462	cf::sync_job {
		2463	# use a peculiar iteration method to avoid tripping on perl
		2464	# refcount bugs in for. also avoids problems with players
		2465	# and maps saved/destroyed asynchronously.
		2466	warn "begin emergency player save\n";
		2467	for my $login (keys %cf::PLAYER) {
		2468	my $pl = $cf::PLAYER{$login} or next;
		2469	$pl->valid or next;
		2470	$pl->save;
		2471	}
		2472	warn "end emergency player save\n";
		2473
		2474	warn "begin emergency map save\n";
		2475	for my $path (keys %cf::MAP) {
		2476	my $map = $cf::MAP{$path} or next;
		2477	$map->valid or next;
		2478	$map->save;
		2479	}
		2480	warn "end emergency map save\n";
		2481
		2482	warn "begin emergency database checkpoint\n";
		2483	BDB::db_env_txn_checkpoint $DB_ENV;
		2484	warn "end emergency database checkpoint\n";
		2485	};
		2486
		2487	warn "leave emergency perl save\n";
		2488	}
		2489
		2490	sub post_cleanup {
		2491	my ($make_core) = @_;
		2492
		2493	warn Carp::longmess "post_cleanup backtrace"
		2494	if $make_core;
		2495	}
		2496
1081	sub _perl_reload(&) {	2497	sub reload() {
1082	my ($msg) = @_;	2498	# can/must only be called in main
		2499	if ($Coro::current != $Coro::main) {
		2500	warn "can only reload from main coroutine";
		2501	return;
		2502	}
1083		2503
1084	$msg->("reloading...");	2504	warn "reloading...";
1085		2505
1086	eval {	2506	warn "entering sync_job";
1087	# cancel all watchers	2507
		2508	cf::sync_job {
		2509	cf::write_runtime; # external watchdog should not bark
		2510	cf::emergency_save;
		2511	cf::write_runtime; # external watchdog should not bark
		2512
		2513	warn "syncing database to disk";
		2514	BDB::db_env_txn_checkpoint $DB_ENV;
		2515
		2516	# if anything goes wrong in here, we should simply crash as we already saved
		2517
		2518	warn "cancelling all WF_AUTOCANCEL watchers";
1088	for (Event::all_watchers) {	2519	for (Event::all_watchers) {
1089	$_->cancel if $_->data & WF_AUTOCANCEL;	2520	$_->cancel if $_->data & WF_AUTOCANCEL;
1090	}	2521	}
1091		2522
1092	# unload all extensions	2523	warn "flushing outstanding aio requests";
1093	for (@exts) {	2524	for (;;) {
1094	$msg->("unloading <$_>");	2525	BDB::flush;
1095	unload_extension $_;	2526	IO::AIO::flush;
		2527	Coro::cede;
		2528	last unless IO::AIO::nreqs || BDB::nreqs;
		2529	warn "iterate...";
		2530	}
		2531
		2532	++$RELOAD;
		2533
		2534	warn "cancelling all extension coros";
		2535	$_->cancel for values %EXT_CORO;
		2536	%EXT_CORO = ();
		2537
		2538	warn "removing commands";
		2539	%COMMAND = ();
		2540
		2541	warn "removing ext commands";
		2542	%EXTCMD = ();
		2543
		2544	warn "unloading/nuking all extensions";
		2545	for my $pkg (@EXTS) {
		2546	warn "... unloading $pkg";
		2547
		2548	if (my $cb = $pkg->can ("unload")) {
		2549	eval {
		2550	$cb->($pkg);
		2551	1
		2552	} or warn "$pkg unloaded, but with errors: $@";
1096	}	2553	}
1097		2554
		2555	warn "... nuking $pkg";
		2556	Symbol::delete_package $pkg;
		2557	}
		2558
1098	# unload all modules loaded from $LIBDIR	2559	warn "unloading all perl modules loaded from $LIBDIR";
1099	while (my ($k, $v) = each %INC) {	2560	while (my ($k, $v) = each %INC) {
1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2561	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1101		2562
1102	$msg->("removing <$k>");	2563	warn "... unloading $k";
1103	delete $INC{$k};	2564	delete $INC{$k};
1104		2565
1105	$k =~ s/\.pm$//;	2566	$k =~ s/\.pm$//;
1106	$k =~ s/\//::/g;	2567	$k =~ s/\//::/g;
1107		2568
…		…
1110	}	2571	}
1111		2572
1112	Symbol::delete_package $k;	2573	Symbol::delete_package $k;
1113	}	2574	}
1114		2575
1115	# sync database to disk
1116	cf::db_sync;
1117
1118	# get rid of safe::, as good as possible	2576	warn "getting rid of safe::, as good as possible";
1119	Symbol::delete_package "safe::$_"	2577	Symbol::delete_package "safe::$_"
1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2578	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1121		2579
1122	# remove register_script_function callbacks
1123	# TODO
1124
1125	# unload cf.pm "a bit"	2580	warn "unloading cf.pm \"a bit\"";
1126	delete $INC{"cf.pm"};	2581	delete $INC{"cf.pm"};
1127		2582
1128	# don't, removes xs symbols, too,	2583	# don't, removes xs symbols, too,
1129	# and global variables created in xs	2584	# and global variables created in xs
1130	#Symbol::delete_package __PACKAGE__;	2585	#Symbol::delete_package __PACKAGE__;
1131		2586
1132	# reload cf.pm	2587	warn "unload completed, starting to reload now";
		2588
1133	$msg->("reloading cf.pm");	2589	warn "reloading cf.pm";
1134	require cf;	2590	require cf;
		2591	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1135		2592
1136	# load config and database again	2593	warn "loading config and database again";
1137	cf::cfg_load;	2594	cf::cfg_load;
1138	cf::db_load;
1139		2595
1140	# load extensions	2596	warn "loading extensions";
1141	$msg->("load extensions");
1142	cf::load_extensions;	2597	cf::load_extensions;
1143		2598
1144	# reattach attachments to objects	2599	warn "reattaching attachments to objects/players";
1145	$msg->("reattach");	2600	_global_reattach; # objects, sockets
1146	_global_reattach;	2601	warn "reattaching attachments to maps";
		2602	reattach $_ for values %MAP;
		2603	warn "reattaching attachments to players";
		2604	reattach $_ for values %PLAYER;
		2605
		2606	warn "loading reloadable resources";
		2607	reload_resources;
		2608
		2609	warn "leaving sync_job";
		2610
		2611	1
		2612	} or do {
		2613	warn $@;
		2614	warn "error while reloading, exiting.";
		2615	exit 1;
1147	};	2616	};
1148	$msg->($@) if $@;
1149		2617
1150	$msg->("reloaded");	2618	warn "reloaded";
1151	};	2619	};
1152		2620
1153	sub perl_reload() {	2621	our $RELOAD_WATCHER; # used only during reload
1154	_perl_reload {
1155	warn $_[0];
1156	print "$_[0]\n";
1157	};
1158	}
1159		2622
1160	register "<global>", __PACKAGE__;
1161
1162	register_command "perl-reload" => sub {	2623	register_command "reload" => sub {
1163	my ($who, $arg) = @_;	2624	my ($who, $arg) = @_;
1164		2625
1165	if ($who->flag (FLAG_WIZ)) {	2626	if ($who->flag (FLAG_WIZ)) {
1166	_perl_reload {	2627	$who->message ("reloading server.");
1167	warn $_[0];	2628
1168	$who->message ($_[0]);	2629	# doing reload synchronously and two reloads happen back-to-back,
		2630	# coro crashes during coro_state_free->destroy here.
		2631
		2632	$RELOAD_WATCHER ||= Event->timer (
		2633	reentrant => 0,
		2634	after => 0,
		2635	data => WF_AUTOCANCEL,
		2636	cb => sub {
		2637	reload;
		2638	undef $RELOAD_WATCHER;
		2639	},
1169	};	2640	);
1170	}	2641	}
1171	};	2642	};
1172		2643
1173	unshift @INC, $LIBDIR;	2644	unshift @INC, $LIBDIR;
1174		2645
		2646	my $bug_warning = 0;
		2647
1175	$TICK_WATCHER = Event->timer (	2648	$TICK_WATCHER = Event->timer (
		2649	reentrant => 0,
		2650	parked => 1,
1176	prio => 0,	2651	prio => 0,
1177	at => $NEXT_TICK || 1,	2652	at => $NEXT_TICK || $TICK,
1178	data => WF_AUTOCANCEL,	2653	data => WF_AUTOCANCEL,
1179	cb => sub {	2654	cb => sub {
		2655	if ($Coro::current != $Coro::main) {
		2656	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2657	unless ++$bug_warning > 10;
		2658	return;
		2659	}
		2660
		2661	$NOW = Event::time;
		2662
1180	cf::server_tick; # one server iteration	2663	cf::server_tick; # one server iteration
1181		2664	$RUNTIME += $TICK;
1182	my $NOW = Event::time;
1183	$NEXT_TICK += $TICK;	2665	$NEXT_TICK += $TICK;
1184		2666
		2667	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2668	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2669	Coro::async_pool {
		2670	write_runtime
		2671	or warn "ERROR: unable to write runtime file: $!";
		2672	};
		2673	}
		2674
		2675	$WAIT_FOR_TICK->broadcast;
		2676	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2677
		2678	# my $AFTER = Event::time;
		2679	# warn $AFTER - $NOW;#d#
		2680
1185	# if we are delayed by four ticks or more, skip them all	2681	# if we are delayed by four ticks or more, skip them all
1186	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2682	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1187		2683
1188	$TICK_WATCHER->at ($NEXT_TICK);	2684	$TICK_WATCHER->at ($NEXT_TICK);
1189	$TICK_WATCHER->start;	2685	$TICK_WATCHER->start;
1190	},	2686	},
1191	);	2687	);
1192		2688
		2689	{
		2690	BDB::max_poll_time $TICK * 0.1;
		2691	$BDB_POLL_WATCHER = Event->io (
		2692	reentrant => 0,
		2693	fd => BDB::poll_fileno,
		2694	poll => 'r',
		2695	prio => 0,
		2696	data => WF_AUTOCANCEL,
		2697	cb => \&BDB::poll_cb,
		2698	);
		2699	BDB::min_parallel 8;
		2700
		2701	BDB::set_sync_prepare {
		2702	my $status;
		2703	my $current = $Coro::current;
		2704	(
		2705	sub {
		2706	$status = $!;
		2707	$current->ready; undef $current;
		2708	},
		2709	sub {
		2710	Coro::schedule while defined $current;
		2711	$! = $status;
		2712	},
		2713	)
		2714	};
		2715
		2716	unless ($DB_ENV) {
		2717	$DB_ENV = BDB::db_env_create;
		2718
		2719	cf::sync_job {
		2720	eval {
		2721	BDB::db_env_open
		2722	$DB_ENV,
		2723	$BDB_ENV_DIR,
		2724	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2725	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2726	0666;
		2727
		2728	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2729
		2730	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2731	$DB_ENV->set_lk_detect;
		2732	};
		2733
		2734	cf::cleanup "db_env_open(db): $@" if $@;
		2735	};
		2736	}
		2737	}
		2738
		2739	{
		2740	IO::AIO::min_parallel 8;
		2741
		2742	undef $Coro::AIO::WATCHER;
1193	IO::AIO::max_poll_time $TICK * 0.2;	2743	IO::AIO::max_poll_time $TICK * 0.1;
1194		2744	$AIO_POLL_WATCHER = Event->io (
1195	Event->io (fd => IO::AIO::poll_fileno,	2745	reentrant => 0,
1196	poll => 'r',
1197	prio => 5,
1198	data => WF_AUTOCANCEL,	2746	data => WF_AUTOCANCEL,
		2747	fd => IO::AIO::poll_fileno,
		2748	poll => 'r',
		2749	prio => 6,
1199	cb => \&IO::AIO::poll_cb);	2750	cb => \&IO::AIO::poll_cb,
		2751	);
		2752	}
		2753
		2754	END { cf::emergency_save }
1200		2755
1201	1	2756	1
1202		2757

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