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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC vs.
Revision 1.150 by root, Mon Jan 8 19:25:53 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;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.32 ();
		23	use YAML::Syck ();
10	use Time::HiRes;	24	use Time::HiRes;
11	use Event;	25
12	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		27
14	use strict;	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
15		30
16	_init_vars;	31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
18	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
19	our @EVENT;	39	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	40	our $LIBDIR = datadir . "/ext";
21		41
22	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	43	our $TICK_WATCHER;
24	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
25		46
26	our %CFG;	47	our %CFG;
27		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %PLAYER; # all users
		53	our %MAP; # all maps
		54	our $LINK_MAP; # the special {link} map
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO; # coroutines bound to extensions
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76	our $EMERGENCY_POSITION;
		77
28	#############################################################################	78	#############################################################################
29		79
30	=head2 GLOBAL VARIABLES	80	=head2 GLOBAL VARIABLES
31		81
32	=over 4	82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
33		92
34	=item $cf::LIBDIR	93	=item $cf::LIBDIR
35		94
36	The perl library directory, where extensions and cf-specific modules can	95	The perl library directory, where extensions and cf-specific modules can
37	be found. It will be added to C<@INC> automatically.	96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
38		101
39	=item $cf::TICK	102	=item $cf::TICK
40		103
41	The interval between server ticks, in seconds.	104	The interval between server ticks, in seconds.
42		105
…		…
50	=cut	113	=cut
51		114
52	BEGIN {	115	BEGIN {
53	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
55	$msg .= "\n"	120	$msg .= "\n"
56	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
57		122
58	print STDERR "cfperl: $msg";
59	LOG llevError, "cfperl: $msg";	123	LOG llevError, $msg;
60	};	124	};
61	}	125	}
62		126
		127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		131	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64		133
65	# we bless all objects into (empty) derived classes to force a method lookup	134	# we bless all objects into (empty) derived classes to force a method lookup
66	# within the Safe compartment.	135	# within the Safe compartment.
67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
68	no strict 'refs';	143	no strict 'refs';
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	145	}
71		146
72	$Event::DIED = sub {	147	$Event::DIED = sub {
…		…
74	};	149	};
75		150
76	my %ext_pkg;	151	my %ext_pkg;
77	my @exts;	152	my @exts;
78	my @hook;	153	my @hook;
79	my %command;
80	my %extcmd;
81		154
82	=head2 UTILITY FUNCTIONS	155	=head2 UTILITY FUNCTIONS
83		156
84	=over 4	157	=over 4
85		158
…		…
107	sub to_json($) {	180	sub to_json($) {
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
109	JSON::Syck::Dump $_[0]	182	JSON::Syck::Dump $_[0]
110	}	183	}
111		184
		185	=item cf::lock_wait $string
		186
		187	Wait until the given lock is available. See cf::lock_acquire.
		188
		189	=item my $lock = cf::lock_acquire $string
		190
		191	Wait until the given lock is available and then acquires it and returns
		192	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		193	for example when the coroutine gets canceled), the lock is automatically
		194	returned.
		195
		196	Lock names should begin with a unique identifier (for example, cf::map::find
		197	uses map_find and cf::map::load uses map_load).
		198
		199	=cut
		200
		201	our %LOCK;
		202
		203	sub lock_wait($) {
		204	my ($key) = @_;
		205
		206	# wait for lock, if any
		207	while ($LOCK{$key}) {
		208	push @{ $LOCK{$key} }, $Coro::current;
		209	Coro::schedule;
		210	}
		211	}
		212
		213	sub lock_acquire($) {
		214	my ($key) = @_;
		215
		216	# wait, to be sure we are not locked
		217	lock_wait $key;
		218
		219	$LOCK{$key} = [];
		220
		221	Coro::guard {
		222	# wake up all waiters, to be on the safe side
		223	$_->ready for @{ delete $LOCK{$key} };
		224	}
		225	}
		226
		227	sub freeze_mainloop {
		228	return unless $TICK_WATCHER->is_active;
		229
		230	my $guard = Coro::guard { $TICK_WATCHER->start };
		231	$TICK_WATCHER->stop;
		232	$guard
		233	}
		234
		235	=item cf::async { BLOCK }
		236
		237	Currently the same as Coro::async_pool, meaning you cannot use
		238	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		239	thing you are allowed to do is call C<prio> on it.
		240
		241	=cut
		242
		243	BEGIN { *async = \&Coro::async_pool }
		244
		245	=item cf::sync_job { BLOCK }
		246
		247	The design of crossfire+ requires that the main coro ($Coro::main) is
		248	always able to handle events or runnable, as crossfire+ is only partly
		249	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		250
		251	If it must be done, put the blocking parts into C<sync_job>. This will run
		252	the given BLOCK in another coroutine while waiting for the result. The
		253	server will be frozen during this time, so the block should either finish
		254	fast or be very important.
		255
		256	=cut
		257
		258	sub sync_job(&) {
		259	my ($job) = @_;
		260
		261	if ($Coro::current == $Coro::main) {
		262	# this is the main coro, too bad, we have to block
		263	# till the operation succeeds, freezing the server :/
		264
		265	# TODO: use suspend/resume instead
		266	# (but this is cancel-safe)
		267	my $freeze_guard = freeze_mainloop;
		268
		269	my $busy = 1;
		270	my @res;
		271
		272	(async {
		273	@res = eval { $job->() };
		274	warn $@ if $@;
		275	undef $busy;
		276	})->prio (Coro::PRIO_MAX);
		277
		278	while ($busy) {
		279	Coro::cede or Event::one_event;
		280	}
		281
		282	wantarray ? @res : $res[0]
		283	} else {
		284	# we are in another coroutine, how wonderful, everything just works
		285
		286	$job->()
		287	}
		288	}
		289
		290	=item $coro = cf::async_ext { BLOCK }
		291
		292	Like async, but this coro is automcatially being canceled when the
		293	extension calling this is being unloaded.
		294
		295	=cut
		296
		297	sub async_ext(&) {
		298	my $cb = shift;
		299
		300	my $coro = &Coro::async ($cb);
		301
		302	$coro->on_destroy (sub {
		303	delete $EXT_CORO{$coro+0};
		304	});
		305	$EXT_CORO{$coro+0} = $coro;
		306
		307	$coro
		308	}
		309
		310	sub write_runtime {
		311	my $runtime = cf::localdir . "/runtime";
		312
		313	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		314	or return;
		315
		316	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		317	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		318	and return;
		319
		320	aio_fsync $fh
		321	and return;
		322
		323	close $fh
		324	or return;
		325
		326	aio_rename "$runtime~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
112	=back	332	=back
113		333
114	=cut	334	=cut
115		335
116	#############################################################################	336	#############################################################################
117		337
118	=head2 EVENTS AND OBJECT ATTACHMENTS	338	package cf::path;
		339
		340	sub new {
		341	my ($class, $path, $base) = @_;
		342
		343	$path = $path->as_string if ref $path;
		344
		345	my $self = bless { }, $class;
		346
		347	# {... are special paths that are not touched
		348	# ?xxx/... are special absolute paths
		349	# ?random/... random maps
		350	# /! non-realised random map exit
		351	# /... normal maps
		352	# ~/... per-player maps without a specific player (DO NOT USE)
		353	# ~user/... per-player map of a specific user
		354
		355	if ($path =~ /^{/) {
		356	# fine as it is
		357	} elsif ($path =~ s{^\?random/}{}) {
		358	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		359	$self->{random} = cf::from_json $data;
		360	} else {
		361	if ($path =~ s{^~([^/]+)?}{}) {
		362	$self->{user_rel} = 1;
		363
		364	if (defined $1) {
		365	$self->{user} = $1;
		366	} elsif ($base =~ m{^~([^/]+)/}) {
		367	$self->{user} = $1;
		368	} else {
		369	warn "cannot resolve user-relative path without user <$path,$base>\n";
		370	}
		371	} elsif ($path =~ /^\//) {
		372	# already absolute
		373	} else {
		374	$base =~ s{[^/]+/?$}{};
		375	return $class->new ("$base/$path");
		376	}
		377
		378	for ($path) {
		379	redo if s{/\.?/}{/};
		380	redo if s{/[^/]+/\.\./}{/};
		381	}
		382	}
		383
		384	$self->{path} = $path;
		385
		386	$self
		387	}
		388
		389	# the name / primary key / in-game path
		390	sub as_string {
		391	my ($self) = @_;
		392
		393	$self->{user_rel} ? "~$self->{user}$self->{path}"
		394	: $self->{random} ? "?random/$self->{path}"
		395	: $self->{path}
		396	}
		397
		398	# the displayed name, this is a one way mapping
		399	sub visible_name {
		400	my ($self) = @_;
		401
		402	# if (my $rmp = $self->{random}) {
		403	# # todo: be more intelligent about this
		404	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		405	# } else {
		406	$self->as_string
		407	# }
		408	}
		409
		410	# escape the /'s in the path
		411	sub _escaped_path {
		412	# ∕ is U+2215
		413	(my $path = $_[0]{path}) =~ s/\//∕/g;
		414	$path
		415	}
		416
		417	# the original (read-only) location
		418	sub load_path {
		419	my ($self) = @_;
		420
		421	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		422	}
		423
		424	# the temporary/swap location
		425	sub save_path {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		429	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		430	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		431	}
		432
		433	# the unique path, might be eq to save_path
		434	sub uniq_path {
		435	my ($self) = @_;
		436
		437	$self->{user_rel} || $self->{random}
		438	? undef
		439	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		440	}
		441
		442	# return random map parameters, or undef
		443	sub random_map_params {
		444	my ($self) = @_;
		445
		446	$self->{random}
		447	}
		448
		449	# this is somewhat ugly, but style maps do need special treatment
		450	sub is_style_map {
		451	$_[0]{path} =~ m{^/styles/}
		452	}
		453
		454	package cf;
		455
		456	#############################################################################
		457
		458	=head2 ATTACHABLE OBJECTS
		459
		460	Many objects in crossfire are so-called attachable objects. That means you can
		461	attach callbacks/event handlers (a collection of which is called an "attachment")
		462	to it. All such attachable objects support the following methods.
		463
		464	In the following description, CLASS can be any of C<global>, C<object>
		465	C<player>, C<client> or C<map> (i.e. the attachable objects in
		466	crossfire+).
119		467
120	=over 4	468	=over 4
121		469
122	=item $object->attach ($attachment, key => $value...)
123
124	=item $object->detach ($attachment)
125
126	Attach/detach a pre-registered attachment to an object.
127
128	=item $player->attach ($attachment, key => $value...)
129
130	=item $player->detach ($attachment)
131
132	Attach/detach a pre-registered attachment to a player.
133
134	=item $map->attach ($attachment, key => $value...)	470	=item $attachable->attach ($attachment, key => $value...)
135		471
136	=item $map->detach ($attachment)	472	=item $attachable->detach ($attachment)
137		473
138	Attach/detach a pre-registered attachment to a map.	474	Attach/detach a pre-registered attachment to a specific object and give it
		475	the specified key/value pairs as arguments.
139		476
140	=item $bool = $object->attached ($name)	477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
141		479
142	=item $bool = $player->attached ($name)	480	$obj->attach (minesweeper => width => 10, height => 10);
143		481
144	=item $bool = $map->attached ($name)	482	=item $bool = $attachable->attached ($name)
145		483
146	Checks wether the named attachment is currently attached to the object.	484	Checks wether the named attachment is currently attached to the object.
147		485
148	=item cf::attach_global ...	486	=item cf::CLASS->attach ...
149		487
150	Attach handlers for global events.	488	=item cf::CLASS->detach ...
151		489
152	This and all following C<attach_*>-functions expect any number of the	490	Define an anonymous attachment and attach it to all objects of the given
153	following handler/hook descriptions:	491	CLASS. See the next function for an explanation of its arguments.
		492
		493	You can attach to global events by using the C<cf::global> class.
		494
		495	Example, log all player logins:
		496
		497	cf::player->attach (
		498	on_login => sub {
		499	my ($pl) = @_;
		500	...
		501	},
		502	);
		503
		504	Example, attach to the jeweler skill:
		505
		506	cf::object->attach (
		507	type => cf::SKILL,
		508	subtype => cf::SK_JEWELER,
		509	on_use_skill => sub {
		510	my ($sk, $ob, $part, $dir, $msg) = @_;
		511	...
		512	},
		513	);
		514
		515	=item cf::CLASS::attachment $name, ...
		516
		517	Register an attachment by C<$name> through which attachable objects of the
		518	given CLASS can refer to this attachment.
		519
		520	Some classes such as crossfire maps and objects can specify attachments
		521	that are attached at load/instantiate time, thus the need for a name.
		522
		523	These calls expect any number of the following handler/hook descriptions:
154		524
155	=over 4	525	=over 4
156		526
157	=item prio => $number	527	=item prio => $number
158		528
…		…
160	by another C<prio> setting). Lower priority handlers get executed	530	by another C<prio> setting). Lower priority handlers get executed
161	earlier. The default priority is C<0>, and many built-in handlers are	531	earlier. The default priority is C<0>, and many built-in handlers are
162	registered at priority C<-1000>, so lower priorities should not be used	532	registered at priority C<-1000>, so lower priorities should not be used
163	unless you know what you are doing.	533	unless you know what you are doing.
164		534
		535	=item type => $type
		536
		537	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		538	given type of objects only (the additional parameter C<subtype> can be
		539	used to further limit to the given subtype).
		540
165	=item on_I<event> => \&cb	541	=item on_I<event> => \&cb
166		542
167	Call the given code reference whenever the named event happens (event is	543	Call the given code reference whenever the named event happens (event is
168	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	544	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
169	handlers are recognised generally depends on the type of object these	545	handlers are recognised generally depends on the type of object these
…		…
178	package and register them. Only handlers for eevents supported by the	554	package and register them. Only handlers for eevents supported by the
179	object/class are recognised.	555	object/class are recognised.
180		556
181	=back	557	=back
182		558
183	=item cf::attach_to_type $object_type, $subtype, ...	559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
184		561
185	Attach handlers for a specific object type (e.g. TRANSPORT) and	562	cf::object::attachment sockpuppet =>
186	subtype. If C<$subtype> is zero or undef, matches all objects of the given	563	on_skill_attack => sub {
187	type.	564	my ($self, $victim) = @_;
188		565	...
189	=item cf::attach_to_objects ...
190
191	Attach handlers to all objects. Do not use this except for debugging or
192	very rare events, as handlers are (obviously) called for I<all> objects in
193	the game.
194
195	=item cf::attach_to_players ...
196
197	Attach handlers to all players.
198
199	=item cf::attach_to_maps ...
200
201	Attach handlers to all maps.
202
203	=item cf:register_attachment $name, ...
204
205	Register an attachment by name through which objects can refer to this
206	attachment.
207
208	=item cf:register_player_attachment $name, ...
209
210	Register an attachment by name through which players can refer to this
211	attachment.
212
213	=item cf:register_map_attachment $name, ...
214
215	Register an attachment by name through which maps can refer to this
216	attachment.
217
218	=cut
219
220	# the following variables are defined in .xs and must not be re-created
221	our @CB_GLOBAL = (); # registry for all global events
222	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
223	our @CB_PLAYER = ();
224	our @CB_TYPE = (); # registry for type (cf-object class) based events
225	our @CB_MAP = ();
226
227	my %attachment;
228
229	sub _attach_cb($\%$$$) {
230	my ($registry, $undo, $event, $prio, $cb) = @_;
231
232	use sort 'stable';
233
234	$cb = [$prio, $cb];
235
236	@{$registry->[$event]} = sort
237	{ $a->[0] cmp $b->[0] }
238	@{$registry->[$event] || []}, $cb;
239
240	push @{$undo->{cb}}, [$event, $cb];
241	}
242
243	# attach handles attaching event callbacks
244	# the only thing the caller has to do is pass the correct
245	# registry (== where the callback attaches to).
246	sub _attach(\@$@) {
247	my ($registry, $klass, @arg) = @_;
248
249	my $prio = 0;
250
251	my %undo = (
252	registry => $registry,
253	cb => [],
254	);
255
256	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
257
258	while (@arg) {
259	my $type = shift @arg;
260
261	if ($type eq "prio") {
262	$prio = shift @arg;
263
264	} elsif ($type eq "package") {
265	my $pkg = shift @arg;
266
267	while (my ($name, $id) = each %cb_id) {
268	if (my $cb = $pkg->can ($name)) {
269	_attach_cb $registry, %undo, $id, $prio, $cb;
270	}
271	}	566	}
272
273	} elsif (exists $cb_id{$type}) {
274	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
275
276	} elsif (ref $type) {
277	warn "attaching objects not supported, ignoring.\n";
278
279	} else {
280	shift @arg;
281	warn "attach argument '$type' not supported, ignoring.\n";
282	}
283	}
284
285	\%undo
286	}
287
288	sub _attach_attachment {
289	my ($obj, $name, %arg) = @_;
290
291	return if exists $obj->{_attachment}{$name};
292
293	my $res;
294
295	if (my $attach = $attachment{$name}) {
296	my $registry = $obj->registry;
297
298	for (@$attach) {
299	my ($klass, @attach) = @$_;
300	$res = _attach @$registry, $klass, @attach;
301	}
302
303	$obj->{$name} = \%arg;
304	} else {
305	warn "object uses attachment '$name' that is not available, postponing.\n";
306	}
307
308	$obj->{_attachment}{$name} = undef;
309
310	$res->{attachment} = $name;
311	$res
312	}
313
314	*cf::object::attach =
315	*cf::player::attach =
316	*cf::map::attach = sub {
317	my ($obj, $name, %arg) = @_;
318
319	_attach_attachment $obj, $name, %arg;
320	};
321
322	# all those should be optimised
323	*cf::object::detach =
324	*cf::player::detach =
325	*cf::map::detach = sub {
326	my ($obj, $name) = @_;
327
328	delete $obj->{_attachment}{$name};
329	reattach ($obj);
330	};
331
332	*cf::object::attached =
333	*cf::player::attached =
334	*cf::map::attached = sub {
335	my ($obj, $name) = @_;
336
337	exists $obj->{_attachment}{$name}
338	};
339
340	sub attach_global {
341	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
342	}
343
344	sub attach_to_type {
345	my $type = shift;
346	my $subtype = shift;
347
348	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
349	}
350
351	sub attach_to_objects {
352	_attach @CB_OBJECT, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_players {
356	_attach @CB_PLAYER, KLASS_PLAYER, @_
357	}
358
359	sub attach_to_maps {
360	_attach @CB_MAP, KLASS_MAP, @_
361	}
362
363	sub register_attachment {
364	my $name = shift;
365
366	$attachment{$name} = [[KLASS_OBJECT, @_]];
367	}
368
369	sub register_player_attachment {
370	my $name = shift;
371
372	$attachment{$name} = [[KLASS_PLAYER, @_]];
373	}
374
375	sub register_map_attachment {
376	my $name = shift;
377
378	$attachment{$name} = [[KLASS_MAP, @_]];
379	}
380
381	our $override;
382	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
383
384	sub override {
385	$override = 1;
386	@invoke_results = ();
387	}
388
389	sub do_invoke {
390	my $event = shift;
391	my $callbacks = shift;
392
393	@invoke_results = ();
394
395	local $override;
396
397	for (@$callbacks) {
398	eval { &{$_->[1]} };
399
400	if ($@) {
401	warn "$@";
402	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
403	override;
404	}
405
406	return 1 if $override;
407	}
408
409	0	567	}
410	}
411		568
412	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	569	=item $attachable->valid
413
414	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
415
416	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
417
418	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
419
420	Generate a global/object/player/map-specific event with the given arguments.
421
422	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
423	removed in future versions), and there is no public API to access override
424	results (if you must, access C<@cf::invoke_results> directly).
425
426	=back
427
428	=cut
429
430	#############################################################################
431
432	=head2 METHODS VALID FOR ALL CORE OBJECTS
433
434	=over 4
435
436	=item $object->valid, $player->valid, $map->valid
437		570
438	Just because you have a perl object does not mean that the corresponding	571	Just because you have a perl object does not mean that the corresponding
439	C-level object still exists. If you try to access an object that has no	572	C-level object still exists. If you try to access an object that has no
440	valid C counterpart anymore you get an exception at runtime. This method	573	valid C counterpart anymore you get an exception at runtime. This method
441	can be used to test for existence of the C object part without causing an	574	can be used to test for existence of the C object part without causing an
442	exception.	575	exception.
443		576
		577	=cut
		578
		579	# the following variables are defined in .xs and must not be re-created
		580	our @CB_GLOBAL = (); # registry for all global events
		581	our @CB_ATTACHABLE = (); # registry for all attachables
		582	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		583	our @CB_PLAYER = ();
		584	our @CB_CLIENT = ();
		585	our @CB_TYPE = (); # registry for type (cf-object class) based events
		586	our @CB_MAP = ();
		587
		588	my %attachment;
		589
		590	sub _attach_cb($$$$) {
		591	my ($registry, $event, $prio, $cb) = @_;
		592
		593	use sort 'stable';
		594
		595	$cb = [$prio, $cb];
		596
		597	@{$registry->[$event]} = sort
		598	{ $a->[0] cmp $b->[0] }
		599	@{$registry->[$event] || []}, $cb;
		600	}
		601
		602	# hack
		603	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		604
		605	# attach handles attaching event callbacks
		606	# the only thing the caller has to do is pass the correct
		607	# registry (== where the callback attaches to).
		608	sub _attach {
		609	my ($registry, $klass, @arg) = @_;
		610
		611	my $object_type;
		612	my $prio = 0;
		613	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		614
		615	#TODO: get rid of this hack
		616	if ($attachable_klass{$klass}) {
		617	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		618	}
		619
		620	while (@arg) {
		621	my $type = shift @arg;
		622
		623	if ($type eq "prio") {
		624	$prio = shift @arg;
		625
		626	} elsif ($type eq "type") {
		627	$object_type = shift @arg;
		628	$registry = $CB_TYPE[$object_type] ||= [];
		629
		630	} elsif ($type eq "subtype") {
		631	defined $object_type or Carp::croak "subtype specified without type";
		632	my $object_subtype = shift @arg;
		633	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		634
		635	} elsif ($type eq "package") {
		636	my $pkg = shift @arg;
		637
		638	while (my ($name, $id) = each %cb_id) {
		639	if (my $cb = $pkg->can ($name)) {
		640	_attach_cb $registry, $id, $prio, $cb;
		641	}
		642	}
		643
		644	} elsif (exists $cb_id{$type}) {
		645	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		646
		647	} elsif (ref $type) {
		648	warn "attaching objects not supported, ignoring.\n";
		649
		650	} else {
		651	shift @arg;
		652	warn "attach argument '$type' not supported, ignoring.\n";
		653	}
		654	}
		655	}
		656
		657	sub _object_attach {
		658	my ($obj, $name, %arg) = @_;
		659
		660	return if exists $obj->{_attachment}{$name};
		661
		662	if (my $attach = $attachment{$name}) {
		663	my $registry = $obj->registry;
		664
		665	for (@$attach) {
		666	my ($klass, @attach) = @$_;
		667	_attach $registry, $klass, @attach;
		668	}
		669
		670	$obj->{$name} = \%arg;
		671	} else {
		672	warn "object uses attachment '$name' that is not available, postponing.\n";
		673	}
		674
		675	$obj->{_attachment}{$name} = undef;
		676	}
		677
		678	sub cf::attachable::attach {
		679	if (ref $_[0]) {
		680	_object_attach @_;
		681	} else {
		682	_attach shift->_attach_registry, @_;
		683	}
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
		688	my ($obj, $name) = @_;
		689
		690	if (ref $obj) {
		691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	};
		697
		698	sub cf::attachable::attached {
		699	my ($obj, $name) = @_;
		700
		701	exists $obj->{_attachment}{$name}
		702	}
		703
		704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
		709
		710	sub cf::\L$klass\E::attachment {
		711	my \$name = shift;
		712
		713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
		717	}
		718
		719	our $override;
		720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		721
		722	sub override {
		723	$override = 1;
		724	@invoke_results = ();
		725	}
		726
		727	sub do_invoke {
		728	my $event = shift;
		729	my $callbacks = shift;
		730
		731	@invoke_results = ();
		732
		733	local $override;
		734
		735	for (@$callbacks) {
		736	eval { &{$_->[1]} };
		737
		738	if ($@) {
		739	warn "$@";
		740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		741	override;
		742	}
		743
		744	return 1 if $override;
		745	}
		746
		747	0
		748	}
		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
444	=back	760	=back
445		761
446	=cut	762	=cut
447
448	*cf::object::valid =
449	*cf::player::valid =
450	*cf::map::valid = \&cf::_valid;
451		763
452	#############################################################################	764	#############################################################################
453	# object support	765	# object support
454		766
455	sub instantiate {
456	my ($obj, $data) = @_;
457
458	$data = from_json $data;
459
460	for (@$data) {
461	my ($name, $args) = @$_;
462
463	$obj->attach ($name, %{$args || {} });
464	}
465	}
466
467	# basically do the same as instantiate, without calling instantiate
468	sub reattach {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
469	my ($obj) = @_;	769	my ($obj) = @_;
		770
470	my $registry = $obj->registry;	771	my $registry = $obj->registry;
471		772
472	@$registry = ();	773	@$registry = ();
473		774
474	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
475		776
476	for my $name (keys %{ $obj->{_attachment} || {} }) {	777	for my $name (keys %{ $obj->{_attachment} || {} }) {
477	if (my $attach = $attachment{$name}) {	778	if (my $attach = $attachment{$name}) {
478	for (@$attach) {	779	for (@$attach) {
479	my ($klass, @attach) = @$_;	780	my ($klass, @attach) = @$_;
480	_attach @$registry, $klass, @attach;	781	_attach $registry, $klass, @attach;
481	}	782	}
482	} else {	783	} else {
483	warn "object uses attachment '$name' that is not available, postponing.\n";	784	warn "object uses attachment '$name' that is not available, postponing.\n";
484	}	785	}
485	}	786	}
486	}	787	}
487		788
488	sub object_freezer_save {	789	cf::attachable->attach (
489	my ($filename, $rdata, $objs) = @_;
490
491	if (length $$rdata) {
492	warn sprintf "saving %s (%d,%d)\n",
493	$filename, length $$rdata, scalar @$objs;
494
495	if (open my $fh, ">:raw", "$filename~") {
496	chmod SAVE_MODE, $fh;
497	syswrite $fh, $$rdata;
498	close $fh;
499
500	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
501	chmod SAVE_MODE, $fh;
502	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
503	close $fh;
504	rename "$filename.pst~", "$filename.pst";
505	} else {
506	unlink "$filename.pst";
507	}
508
509	rename "$filename~", $filename;
510	} else {
511	warn "FATAL: $filename~: $!\n";
512	}
513	} else {
514	unlink $filename;
515	unlink "$filename.pst";
516	}
517	}
518
519	sub object_thawer_load {
520	my ($filename) = @_;
521
522	local $/;
523
524	my $av;
525
526	#TODO: use sysread etc.
527	if (open my $data, "<:raw:perlio", $filename) {
528	$data = <$data>;
529	if (open my $pst, "<:raw:perlio", "$filename.pst") {
530	$av = eval { (Storable::thaw <$pst>)->{objs} };
531	}
532	return ($data, $av);
533	}
534
535	()
536	}
537
538	attach_to_objects
539	prio => -1000000,	790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
540	on_clone => sub {	803	on_clone => sub {
541	my ($src, $dst) = @_;	804	my ($src, $dst) = @_;
542		805
543	@{$dst->registry} = @{$src->registry};	806	@{$dst->registry} = @{$src->registry};
544		807
545	%$dst = %$src;	808	%$dst = %$src;
546		809
547	%{$dst->{_attachment}} = %{$src->{_attachment}}	810	%{$dst->{_attachment}} = %{$src->{_attachment}}
548	if exists $src->{_attachment};	811	if exists $src->{_attachment};
549	},	812	},
550	;	813	);
		814
		815	sub object_freezer_save {
		816	my ($filename, $rdata, $objs) = @_;
		817
		818	sync_job {
		819	if (length $$rdata) {
		820	warn sprintf "saving %s (%d,%d)\n",
		821	$filename, length $$rdata, scalar @$objs;
		822
		823	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		824	chmod SAVE_MODE, $fh;
		825	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		826	aio_fsync $fh;
		827	close $fh;
		828
		829	if (@$objs) {
		830	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		831	chmod SAVE_MODE, $fh;
		832	my $data = Storable::nfreeze { version => 1, objs => $objs };
		833	aio_write $fh, 0, (length $data), $data, 0;
		834	aio_fsync $fh;
		835	close $fh;
		836	aio_rename "$filename.pst~", "$filename.pst";
		837	}
		838	} else {
		839	aio_unlink "$filename.pst";
		840	}
		841
		842	aio_rename "$filename~", $filename;
		843	} else {
		844	warn "FATAL: $filename~: $!\n";
		845	}
		846	} else {
		847	aio_unlink $filename;
		848	aio_unlink "$filename.pst";
		849	}
		850	}
		851	}
		852
		853	sub object_freezer_as_string {
		854	my ($rdata, $objs) = @_;
		855
		856	use Data::Dumper;
		857
		858	$$rdata . Dumper $objs
		859	}
		860
		861	sub object_thawer_load {
		862	my ($filename) = @_;
		863
		864	my ($data, $av);
		865
		866	(aio_load $filename, $data) >= 0
		867	or return;
		868
		869	unless (aio_stat "$filename.pst") {
		870	(aio_load "$filename.pst", $av) >= 0
		871	or return;
		872	$av = eval { (Storable::thaw $av)->{objs} };
		873	}
		874
		875	warn sprintf "loading %s (%d)\n",
		876	$filename, length $data, scalar @{$av || []};#d#
		877	return ($data, $av);
		878	}
551		879
552	#############################################################################	880	#############################################################################
553	# old plug-in events	881	# command handling &c
554		882
555	sub inject_event {	883	=item cf::register_command $name => \&callback($ob,$args);
556	my $extension = shift;
557	my $event_code = shift;
558		884
559	my $cb = $hook[$event_code]{$extension}	885	Register a callback for execution when the client sends the user command
560	or return;	886	$name.
561		887
562	&$cb	888	=cut
563	}
564
565	sub inject_global_event {
566	my $event = shift;
567
568	my $cb = $hook[$event]
569	or return;
570
571	List::Util::max map &$_, values %$cb
572	}
573
574	sub inject_command {
575	my ($name, $obj, $params) = @_;
576
577	for my $cmd (@{ $command{$name} }) {
578	$cmd->[1]->($obj, $params);
579	}
580
581	-1
582	}
583		889
584	sub register_command {	890	sub register_command {
585	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
586		892
587	my $caller = caller;	893	my $caller = caller;
588	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
589		895
590	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
591	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
592	}	897	}
		898
		899	=item cf::register_extcmd $name => \&callback($pl,$packet);
		900
		901	Register a callbackf ro execution when the client sends an extcmd packet.
		902
		903	If the callback returns something, it is sent back as if reply was being
		904	called.
		905
		906	=cut
593		907
594	sub register_extcmd {	908	sub register_extcmd {
595	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
596		910
597	my $caller = caller;	911	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
599		913
600	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
601	}	915	}
		916
		917	cf::player->attach (
		918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
		920
		921	my $cb = $COMMAND{$name}
		922	or return;
		923
		924	for my $cmd (@$cb) {
		925	$cmd->[1]->($pl->ob, $params);
		926	}
		927
		928	cf::override;
		929	},
		930	on_extcmd => sub {
		931	my ($pl, $buf) = @_;
		932
		933	my $msg = eval { from_json $buf };
		934
		935	if (ref $msg) {
		936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		937	if (my %reply = $cb->[0]->($pl, $msg)) {
		938	$pl->ext_reply ($msg->{msgid}, %reply);
		939	}
		940	}
		941	} else {
		942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		943	}
		944
		945	cf::override;
		946	},
		947	);
602		948
603	sub register {	949	sub register {
604	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
605		951
606	#TODO	952	#TODO
…		…
625	. "#line 1 \"$path\"\n{\n"	971	. "#line 1 \"$path\"\n{\n"
626	. (do { local $/; <$fh> })	972	. (do { local $/; <$fh> })
627	. "\n};\n1";	973	. "\n};\n1";
628		974
629	eval $source	975	eval $source
630	or die "$path: $@";	976	or die $@ ? "$path: $@\n"
		977	: "extension disabled.\n";
631		978
632	push @exts, $pkg;	979	push @exts, $pkg;
633	$ext_pkg{$base} = $pkg;	980	$ext_pkg{$base} = $pkg;
634		981
635	# no strict 'refs';	982	# no strict 'refs';
…		…
648	# for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
649	# delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
650	# }	997	# }
651		998
652	# remove commands	999	# remove commands
653	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
654	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
655		1002
656	if (@cb) {	1003	if (@cb) {
657	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
658	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
659	} else {	1005	} else {
660	delete $command{$name};
661	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
662	}	1007	}
663	}	1008	}
664		1009
665	# remove extcmds	1010	# remove extcmds
666	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
667	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
668	}	1013	}
669		1014
670	if (my $cb = $pkg->can ("unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
671	eval {	1016	eval {
672	$cb->($pkg);	1017	$cb->($pkg);
…		…
676		1021
677	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
678	}	1023	}
679		1024
680	sub load_extensions {	1025	sub load_extensions {
681	my $LIBDIR = maps_directory "perl";
682
683	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
684	next unless -r $ext;	1027	next unless -r $ext;
685	eval {	1028	eval {
686	load_extension $ext;	1029	load_extension $ext;
687	1	1030	1
688	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
689	}	1032	}
690	}	1033	}
691		1034
692	#############################################################################	1035	#############################################################################
693	# extcmd framework, basically convert ext <msg>
694	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
695
696	attach_to_players
697	on_extcmd => sub {
698	my ($pl, $buf) = @_;
699
700	my $msg = eval { from_json $buf };
701
702	if (ref $msg) {
703	if (my $cb = $extcmd{$msg->{msgtype}}) {
704	if (my %reply = $cb->[0]->($pl, $msg)) {
705	$pl->ext_reply ($msg->{msgid}, %reply);
706	}
707	}
708	} else {
709	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
710	}
711
712	cf::override;
713	},
714	;
715
716	#############################################################################
717	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
718		1037
719	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
720	my ($map) = @_;	1039	my ($map) = @_;
721		1040
…		…
723	defined $path or return;	1042	defined $path or return;
724		1043
725	unlink "$path.pst";	1044	unlink "$path.pst";
726	};	1045	};
727		1046
728	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
729		1048
730	#############################################################################	1049	#############################################################################
731	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
732		1051
733	sub all_objects(@) {	1052	sub all_objects(@) {
734	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
735	}	1054	}
736		1055
737	# TODO: compatibility cruft, remove when no longer needed	1056	# TODO: compatibility cruft, remove when no longer needed
738	attach_to_players	1057	cf::player->attach (
739	on_load => sub {	1058	on_load => sub {
740	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
741		1060
742	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
745		1064
746	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
747	}	1066	}
748	}	1067	}
749	},	1068	},
750	;	1069	);
751		1070
752	#############################################################################	1071	#############################################################################
753		1072
754	=head2 CORE EXTENSIONS	1073	=head2 CORE EXTENSIONS
755		1074
756	Functions and methods that extend core crossfire objects.	1075	Functions and methods that extend core crossfire objects.
757		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
758	=over 4	1083	=over 4
759		1084
760	=item cf::player::exists $login	1085	=item cf::player::find $login
761		1086
762	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
763		1088
764	=cut	1089	=cut
765		1090
766	sub cf::player::exists($) {	1091	sub playerdir($) {
767	cf::player::find $_[0]	1092	cf::localdir
768	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	. "/"
		1094	. cf::playerdir
		1095	. "/"
		1096	. (ref $_[0] ? $_[0]->ob->name : $_[0])
769	}	1097	}
770		1098
		1099	sub path($) {
		1100	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1101
		1102	(playerdir $login) . "/$login.pl"
		1103	}
		1104
		1105	sub find_active($) {
		1106	$cf::PLAYER{$_[0]}
		1107	and $cf::PLAYER{$_[0]}->active
		1108	and $cf::PLAYER{$_[0]}
		1109	}
		1110
		1111	sub exists($) {
		1112	my ($login) = @_;
		1113
		1114	$cf::PLAYER{$login}
		1115	or cf::sync_job { !aio_stat $login }
		1116	}
		1117
		1118	sub find($) {
		1119	return $cf::PLAYER{$_[0]} || do {
		1120	my $login = $_[0];
		1121
		1122	my $guard = cf::lock_acquire "user_find:$login";
		1123
		1124	$cf::PLAYER{$login} ||= (load_pl path $login or return);
		1125	};
		1126	}
		1127
		1128	sub save($) {
		1129	my ($pl) = @_;
		1130
		1131	return if $pl->{deny_save};
		1132
		1133	my $path = path $pl;
		1134	my $guard = cf::lock_acquire "user_save:$path";
		1135
		1136	return if $pl->{deny_save};
		1137
		1138	Coro::AIO::aio_mkdir playerdir $pl, 0770;
		1139	$pl->{last_save} = $cf::RUNTIME;
		1140
		1141	$pl->save_pl ($path);
		1142	Coro::cede;
		1143	}
		1144
		1145	sub new($) {
		1146	my ($login) = @_;
		1147
		1148	my $self = create;
		1149
		1150	$self->ob->name ($login);
		1151	$self->{deny_save} = 1;
		1152
		1153	$cf::PLAYER{$login} = $self;
		1154
		1155	$self
		1156	}
		1157
		1158	sub quit_character {
		1159	my ($pl) = @_;
		1160
		1161	$pl->{deny_save} = 1;
		1162	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1163
		1164	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1165	$pl->deactivate;
		1166	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1167	$pl->ns->destroy if $pl->ns;
		1168
		1169	my $path = playerdir $pl;
		1170	my $temp = "$path~$cf::RUNTIME~deleting~";
		1171	Coro::AIO::aio_rename $path, $temp;
		1172	delete $cf::PLAYER{$pl->ob->name};
		1173	$pl->destroy;
		1174	IO::AIO::aio_rmtree $temp;
		1175	}
		1176
		1177	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1178
		1179	Sends an ext reply to the player.
		1180
		1181	=cut
		1182
		1183	sub ext_reply($$$%) {
		1184	my ($self, $id, %msg) = @_;
		1185
		1186	$msg{msgid} = $id;
		1187
		1188	$self->send ("ext " . cf::to_json \%msg);
		1189	}
		1190
		1191	package cf;
		1192
		1193	=back
		1194
		1195
		1196	=head3 cf::map
		1197
		1198	=over 4
		1199
		1200	=cut
		1201
		1202	package cf::map;
		1203
		1204	use Fcntl;
		1205	use Coro::AIO;
		1206
		1207	our $MAX_RESET = 3600;
		1208	our $DEFAULT_RESET = 3000;
		1209
		1210	sub generate_random_map {
		1211	my ($path, $rmp) = @_;
		1212
		1213	# mit "rum" bekleckern, nicht
		1214	cf::map::_create_random_map
		1215	$path,
		1216	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1217	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1218	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1219	$rmp->{exit_on_final_map},
		1220	$rmp->{xsize}, $rmp->{ysize},
		1221	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1222	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1223	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1224	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1225	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1226	(cf::region::find $rmp->{region})
		1227	}
		1228
		1229	# and all this just because we cannot iterate over
		1230	# all maps in C++...
		1231	sub change_all_map_light {
		1232	my ($change) = @_;
		1233
		1234	$_->change_map_light ($change)
		1235	for grep $_->outdoor, values %cf::MAP;
		1236	}
		1237
		1238	sub try_load_header($) {
		1239	my ($path) = @_;
		1240
		1241	utf8::encode $path;
		1242	aio_open $path, O_RDONLY, 0
		1243	or return;
		1244
		1245	my $map = cf::map::new
		1246	or return;
		1247
		1248	# for better error messages only, will be overwritten
		1249	$map->path ($path);
		1250
		1251	$map->load_header ($path)
		1252	or return;
		1253
		1254	$map->{load_path} = $path;
		1255
		1256	$map
		1257	}
		1258
		1259	sub find;
		1260	sub find {
		1261	my ($path, $origin) = @_;
		1262
		1263	#warn "find<$path,$origin>\n";#d#
		1264
		1265	$path = new cf::path $path, $origin && $origin->path;
		1266	my $key = $path->as_string;
		1267
		1268	cf::lock_wait "map_find:$key";
		1269
		1270	$cf::MAP{$key} || do {
		1271	my $guard = cf::lock_acquire "map_find:$key";
		1272
		1273	# do it the slow way
		1274	my $map = try_load_header $path->save_path;
		1275
		1276	Coro::cede;
		1277
		1278	if ($map) {
		1279	$map->last_access ((delete $map->{last_access})
		1280	|| $cf::RUNTIME); #d#
		1281	# safety
		1282	$map->{instantiate_time} = $cf::RUNTIME
		1283	if $map->{instantiate_time} > $cf::RUNTIME;
		1284	} else {
		1285	if (my $rmp = $path->random_map_params) {
		1286	$map = generate_random_map $key, $rmp;
		1287	} else {
		1288	$map = try_load_header $path->load_path;
		1289	}
		1290
		1291	$map or return;
		1292
		1293	$map->{load_original} = 1;
		1294	$map->{instantiate_time} = $cf::RUNTIME;
		1295	$map->last_access ($cf::RUNTIME);
		1296	$map->instantiate;
		1297
		1298	# per-player maps become, after loading, normal maps
		1299	$map->per_player (0) if $path->{user_rel};
		1300	}
		1301
		1302	$map->path ($key);
		1303	$map->{path} = $path;
		1304	$map->{last_save} = $cf::RUNTIME;
		1305
		1306	Coro::cede;
		1307
		1308	if ($map->should_reset) {
		1309	$map->reset;
		1310	undef $guard;
		1311	$map = find $path
		1312	or return;
		1313	}
		1314
		1315	$cf::MAP{$key} = $map
		1316	}
		1317	}
		1318
		1319	sub load {
		1320	my ($self) = @_;
		1321
		1322	my $path = $self->{path};
		1323	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1324
		1325	return if $self->in_memory != cf::MAP_SWAPPED;
		1326
		1327	$self->in_memory (cf::MAP_LOADING);
		1328
		1329	$self->alloc;
		1330	$self->load_objects ($self->{load_path}, 1)
		1331	or return;
		1332
		1333	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1334	if delete $self->{load_original};
		1335
		1336	if (my $uniq = $path->uniq_path) {
		1337	utf8::encode $uniq;
		1338	if (aio_open $uniq, O_RDONLY, 0) {
		1339	$self->clear_unique_items;
		1340	$self->load_objects ($uniq, 0);
		1341	}
		1342	}
		1343
		1344	Coro::cede;
		1345
		1346	# now do the right thing for maps
		1347	$self->link_multipart_objects;
		1348
		1349	if ($self->{path}->is_style_map) {
		1350	$self->{deny_save} = 1;
		1351	$self->{deny_reset} = 1;
		1352	} else {
		1353	$self->fix_auto_apply;
		1354	$self->decay_objects;
		1355	$self->update_buttons;
		1356	$self->set_darkness_map;
		1357	$self->difficulty ($self->estimate_difficulty)
		1358	unless $self->difficulty;
		1359	$self->activate;
		1360	}
		1361
		1362	Coro::cede;
		1363
		1364	$self->in_memory (cf::MAP_IN_MEMORY);
		1365	}
		1366
		1367	sub find_sync {
		1368	my ($path, $origin) = @_;
		1369
		1370	cf::sync_job { cf::map::find $path, $origin }
		1371	}
		1372
		1373	sub do_load_sync {
		1374	my ($map) = @_;
		1375
		1376	cf::sync_job { $map->load };
		1377	}
		1378
		1379	sub save {
		1380	my ($self) = @_;
		1381
		1382	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1383
		1384	$self->{last_save} = $cf::RUNTIME;
		1385
		1386	return unless $self->dirty;
		1387
		1388	my $save = $self->{path}->save_path; utf8::encode $save;
		1389	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1390
		1391	$self->{load_path} = $save;
		1392
		1393	return if $self->{deny_save};
		1394
		1395	local $self->{last_access} = $self->last_access;#d#
		1396
		1397	cf::async {
		1398	$_->contr->save for $self->players;
		1399	};
		1400
		1401	if ($uniq) {
		1402	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1403	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1404	} else {
		1405	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1406	}
		1407	}
		1408
		1409	sub swap_out {
		1410	my ($self) = @_;
		1411
		1412	# save first because save cedes
		1413	$self->save;
		1414
		1415	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1416
		1417	return if $self->players;
		1418	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1419	return if $self->{deny_save};
		1420
		1421	$self->clear;
		1422	$self->in_memory (cf::MAP_SWAPPED);
		1423	}
		1424
		1425	sub reset_at {
		1426	my ($self) = @_;
		1427
		1428	# TODO: safety, remove and allow resettable per-player maps
		1429	return 1e99 if $self->{path}{user_rel};
		1430	return 1e99 if $self->{deny_reset};
		1431
		1432	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1433	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1434
		1435	$time + $to
		1436	}
		1437
		1438	sub should_reset {
		1439	my ($self) = @_;
		1440
		1441	$self->reset_at <= $cf::RUNTIME
		1442	}
		1443
		1444	sub unlink_save {
		1445	my ($self) = @_;
		1446
		1447	utf8::encode (my $save = $self->{path}->save_path);
		1448	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1449	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1450	}
		1451
		1452	sub rename {
		1453	my ($self, $new_path) = @_;
		1454
		1455	$self->unlink_save;
		1456
		1457	delete $cf::MAP{$self->path};
		1458	$self->{path} = new cf::path $new_path;
		1459	$self->path ($self->{path}->as_string);
		1460	$cf::MAP{$self->path} = $self;
		1461
		1462	$self->save;
		1463	}
		1464
		1465	sub reset {
		1466	my ($self) = @_;
		1467
		1468	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1469
		1470	return if $self->players;
		1471	return if $self->{path}{user_rel};#d#
		1472
		1473	warn "resetting map ", $self->path;#d#
		1474
		1475	delete $cf::MAP{$self->path};
		1476
		1477	$_->clear_links_to ($self) for values %cf::MAP;
		1478
		1479	$self->unlink_save;
		1480	$self->destroy;
		1481	}
		1482
		1483	my $nuke_counter = "aaaa";
		1484
		1485	sub nuke {
		1486	my ($self) = @_;
		1487
		1488	$self->{deny_save} = 1;
		1489	$self->reset_timeout (1);
		1490	$self->rename ("{nuke}/" . ($nuke_counter++));
		1491	$self->reset; # polite request, might not happen
		1492	}
		1493
		1494	sub customise_for {
		1495	my ($map, $ob) = @_;
		1496
		1497	if ($map->per_player) {
		1498	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1499	}
		1500
		1501	$map
		1502	}
		1503
		1504	sub emergency_save {
		1505	my $freeze_guard = cf::freeze_mainloop;
		1506
		1507	warn "enter emergency perl save\n";
		1508
		1509	cf::sync_job {
		1510	warn "begin emergency player save\n";
		1511	$_->save for values %cf::PLAYER;
		1512	warn "end emergency player save\n";
		1513
		1514	warn "begin emergency map save\n";
		1515	$_->save for values %cf::MAP;
		1516	warn "end emergency map save\n";
		1517	};
		1518
		1519	warn "leave emergency perl save\n";
		1520	}
		1521
		1522	package cf;
		1523
		1524	=back
		1525
		1526
		1527	=head3 cf::object::player
		1528
		1529	=over 4
		1530
771	=item $player->reply ($npc, $msg[, $flags])	1531	=item $player_object->reply ($npc, $msg[, $flags])
772		1532
773	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1533	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
774	can be C<undef>. Does the right thing when the player is currently in a	1534	can be C<undef>. Does the right thing when the player is currently in a
775	dialogue with the given NPC character.	1535	dialogue with the given NPC character.
776		1536
777	=cut	1537	=cut
778		1538
779	# rough implementation of a future "reply" method that works	1539	# rough implementation of a future "reply" method that works
780	# with dialog boxes.	1540	# with dialog boxes.
		1541	#TODO: the first argument must go, split into a $npc->reply_to ( method
781	sub cf::object::player::reply($$$;$) {	1542	sub cf::object::player::reply($$$;$) {
782	my ($self, $npc, $msg, $flags) = @_;	1543	my ($self, $npc, $msg, $flags) = @_;
783		1544
784	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1545	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
785		1546
…		…
789	$msg = $npc->name . " says: $msg" if $npc;	1550	$msg = $npc->name . " says: $msg" if $npc;
790	$self->message ($msg, $flags);	1551	$self->message ($msg, $flags);
791	}	1552	}
792	}	1553	}
793		1554
794	=item $player->ext_reply ($msgid, $msgtype, %msg)	1555	=item $player_object->may ("access")
795		1556
796	Sends an ext reply to the player.	1557	Returns wether the given player is authorized to access resource "access"
		1558	(e.g. "command_wizcast").
797		1559
798	=cut	1560	=cut
799		1561
800	sub cf::player::ext_reply($$$%) {	1562	sub cf::object::player::may {
		1563	my ($self, $access) = @_;
		1564
		1565	$self->flag (cf::FLAG_WIZ) ||
		1566	(ref $cf::CFG{"may_$access"}
		1567	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1568	: $cf::CFG{"may_$access"})
		1569	}
		1570
		1571	=item $player_object->enter_link
		1572
		1573	Freezes the player and moves him/her to a special map (C<{link}>).
		1574
		1575	The player should be reaosnably safe there for short amounts of time. You
		1576	I<MUST> call C<leave_link> as soon as possible, though.
		1577
		1578	=item $player_object->leave_link ($map, $x, $y)
		1579
		1580	Moves the player out of the specila link map onto the given map. If the
		1581	map is not valid (or omitted), the player will be moved back to the
		1582	location he/she was before the call to C<enter_link>, or, if that fails,
		1583	to the emergency map position.
		1584
		1585	Might block.
		1586
		1587	=cut
		1588
		1589	sub cf::object::player::enter_link {
		1590	my ($self) = @_;
		1591
		1592	$self->deactivate_recursive;
		1593
		1594	return if $self->map == $LINK_MAP;
		1595
		1596	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1597	if $self->map;
		1598
		1599	$self->enter_map ($LINK_MAP, 20, 20);
		1600	}
		1601
		1602	sub cf::object::player::leave_link {
		1603	my ($self, $map, $x, $y) = @_;
		1604
		1605	my $link_pos = delete $self->{_link_pos};
		1606
		1607	unless ($map) {
		1608	# restore original map position
		1609	($map, $x, $y) = @{ $link_pos || [] };
		1610	$map = cf::map::find $map;
		1611
		1612	unless ($map) {
		1613	($map, $x, $y) = @$EMERGENCY_POSITION;
		1614	$map = cf::map::find $map
		1615	or die "FATAL: cannot load emergency map\n";
		1616	}
		1617	}
		1618
		1619	($x, $y) = (-1, -1)
		1620	unless (defined $x) && (defined $y);
		1621
		1622	# use -1 or undef as default coordinates, not 0, 0
		1623	($x, $y) = ($map->enter_x, $map->enter_y)
		1624	if $x <=0 && $y <= 0;
		1625
		1626	$map->load;
		1627
		1628	return unless $self->contr->active;
		1629	$self->activate_recursive;
		1630	$self->enter_map ($map, $x, $y);
		1631	}
		1632
		1633	cf::player->attach (
		1634	on_logout => sub {
		1635	my ($pl) = @_;
		1636
		1637	# abort map switching before logout
		1638	if ($pl->ob->{_link_pos}) {
		1639	cf::sync_job {
		1640	$pl->ob->leave_link
		1641	};
		1642	}
		1643	},
		1644	on_login => sub {
		1645	my ($pl) = @_;
		1646
		1647	# try to abort aborted map switching on player login :)
		1648	# should happen only on crashes
		1649	if ($pl->ob->{_link_pos}) {
		1650	$pl->ob->enter_link;
		1651	(async {
		1652	# we need this sleep as the login has a concurrent enter_exit running
		1653	# and this sleep increases chances of the player not ending up in scorn
		1654	$pl->ob->reply (undef,
		1655	"There was an internal problem at your last logout, "
		1656	. "the server will try to bring you to your intended destination in a second.",
		1657	cf::NDI_RED);
		1658	Coro::Timer::sleep 1;
		1659	$pl->ob->leave_link;
		1660	})->prio (2);
		1661	}
		1662	},
		1663	);
		1664
		1665	=item $player_object->goto ($path, $x, $y)
		1666
		1667	=cut
		1668
		1669	sub cf::object::player::goto {
		1670	my ($self, $path, $x, $y) = @_;
		1671
		1672	$self->enter_link;
		1673
		1674	(async {
		1675	$path = new cf::path $path;
		1676
		1677	my $map = cf::map::find $path->as_string;
		1678	$map = $map->customise_for ($self) if $map;
		1679
		1680	# warn "entering ", $map->path, " at ($x, $y)\n"
		1681	# if $map;
		1682
		1683	$map or $map->cluck ("oy");#d#
		1684	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1685
		1686	$self->leave_link ($map, $x, $y);
		1687	})->prio (1);
		1688	}
		1689
		1690	=item $player_object->enter_exit ($exit_object)
		1691
		1692	=cut
		1693
		1694	sub parse_random_map_params {
		1695	my ($spec) = @_;
		1696
		1697	my $rmp = { # defaults
		1698	xsize => 10,
		1699	ysize => 10,
		1700	};
		1701
		1702	for (split /\n/, $spec) {
		1703	my ($k, $v) = split /\s+/, $_, 2;
		1704
		1705	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1706	}
		1707
		1708	$rmp
		1709	}
		1710
		1711	sub prepare_random_map {
		1712	my ($exit) = @_;
		1713
		1714	# all this does is basically replace the /! path by
		1715	# a new random map path (?random/...) with a seed
		1716	# that depends on the exit object
		1717
		1718	my $rmp = parse_random_map_params $exit->msg;
		1719
		1720	if ($exit->map) {
		1721	$rmp->{region} = $exit->map->region_name;
		1722	$rmp->{origin_map} = $exit->map->path;
		1723	$rmp->{origin_x} = $exit->x;
		1724	$rmp->{origin_y} = $exit->y;
		1725	}
		1726
		1727	$rmp->{random_seed} ||= $exit->random_seed;
		1728
		1729	my $data = cf::to_json $rmp;
		1730	my $md5 = Digest::MD5::md5_hex $data;
		1731
		1732	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1733	aio_write $fh, 0, (length $data), $data, 0;
		1734
		1735	$exit->slaying ("?random/$md5");
		1736	$exit->msg (undef);
		1737	}
		1738	}
		1739
		1740	sub cf::object::player::enter_exit {
801	my ($self, $id, %msg) = @_;	1741	my ($self, $exit) = @_;
802		1742
803	$msg{msgid} = $id;	1743	return unless $self->type == cf::PLAYER;
804		1744
805	$self->send ("ext " . to_json \%msg);	1745	$self->enter_link;
		1746
		1747	(async {
		1748	$self->deactivate_recursive; # just to be sure
		1749	unless (eval {
		1750	prepare_random_map $exit
		1751	if $exit->slaying eq "/!";
		1752
		1753	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1754	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1755
		1756	1;
		1757	}) {
		1758	$self->message ("Something went wrong deep within the crossfire server. "
		1759	. "I'll try to bring you back to the map you were before. "
		1760	. "Please report this to the dungeon master",
		1761	cf::NDI_UNIQUE | cf::NDI_RED);
		1762
		1763	warn "ERROR in enter_exit: $@";
		1764	$self->leave_link;
		1765	}
		1766	})->prio (1);
806	}	1767	}
		1768
		1769	=head3 cf::client
		1770
		1771	=over 4
		1772
		1773	=item $client->send_drawinfo ($text, $flags)
		1774
		1775	Sends a drawinfo packet to the client. Circumvents output buffering so
		1776	should not be used under normal circumstances.
		1777
		1778	=cut
		1779
		1780	sub cf::client::send_drawinfo {
		1781	my ($self, $text, $flags) = @_;
		1782
		1783	utf8::encode $text;
		1784	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1785	}
		1786
		1787
		1788	=item $success = $client->query ($flags, "text", \&cb)
		1789
		1790	Queues a query to the client, calling the given callback with
		1791	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1792	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1793
		1794	Queries can fail, so check the return code. Or don't, as queries will become
		1795	reliable at some point in the future.
		1796
		1797	=cut
		1798
		1799	sub cf::client::query {
		1800	my ($self, $flags, $text, $cb) = @_;
		1801
		1802	return unless $self->state == ST_PLAYING
		1803	|| $self->state == ST_SETUP
		1804	|| $self->state == ST_CUSTOM;
		1805
		1806	$self->state (ST_CUSTOM);
		1807
		1808	utf8::encode $text;
		1809	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1810
		1811	$self->send_packet ($self->{query_queue}[0][0])
		1812	if @{ $self->{query_queue} } == 1;
		1813	}
		1814
		1815	cf::client->attach (
		1816	on_reply => sub {
		1817	my ($ns, $msg) = @_;
		1818
		1819	# this weird shuffling is so that direct followup queries
		1820	# get handled first
		1821	my $queue = delete $ns->{query_queue}
		1822	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1823
		1824	(shift @$queue)->[1]->($msg);
		1825
		1826	push @{ $ns->{query_queue} }, @$queue;
		1827
		1828	if (@{ $ns->{query_queue} } == @$queue) {
		1829	if (@$queue) {
		1830	$ns->send_packet ($ns->{query_queue}[0][0]);
		1831	} else {
		1832	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1833	}
		1834	}
		1835	},
		1836	);
		1837
		1838	=item $client->async (\&cb)
		1839
		1840	Create a new coroutine, running the specified callback. The coroutine will
		1841	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1842	or loss of connection).
		1843
		1844	=cut
		1845
		1846	sub cf::client::async {
		1847	my ($self, $cb) = @_;
		1848
		1849	my $coro = &Coro::async ($cb);
		1850
		1851	$coro->on_destroy (sub {
		1852	delete $self->{_coro}{$coro+0};
		1853	});
		1854
		1855	$self->{_coro}{$coro+0} = $coro;
		1856
		1857	$coro
		1858	}
		1859
		1860	cf::client->attach (
		1861	on_destroy => sub {
		1862	my ($ns) = @_;
		1863
		1864	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1865	},
		1866	);
807		1867
808	=back	1868	=back
809		1869
810	=cut
811
812	#############################################################################
813		1870
814	=head2 SAFE SCRIPTING	1871	=head2 SAFE SCRIPTING
815		1872
816	Functions that provide a safe environment to compile and execute	1873	Functions that provide a safe environment to compile and execute
817	snippets of perl code without them endangering the safety of the server	1874	snippets of perl code without them endangering the safety of the server
818	itself. Looping constructs, I/O operators and other built-in functionality	1875	itself. Looping constructs, I/O operators and other built-in functionality
819	is not available in the safe scripting environment, and the number of	1876	is not available in the safe scripting environment, and the number of
820	functions and methods that cna be called is greatly reduced.	1877	functions and methods that can be called is greatly reduced.
821		1878
822	=cut	1879	=cut
823		1880
824	our $safe = new Safe "safe";	1881	our $safe = new Safe "safe";
825	our $safe_hole = new Safe::Hole;	1882	our $safe_hole = new Safe::Hole;
…		…
832		1889
833	=pod	1890	=pod
834		1891
835	The following fucntions and emthods are available within a safe environment:	1892	The following fucntions and emthods are available within a safe environment:
836		1893
837	cf::object contr pay_amount pay_player	1894	cf::object contr pay_amount pay_player map
838	cf::object::player player	1895	cf::object::player player
839	cf::player peaceful	1896	cf::player peaceful
		1897	cf::map trigger
840		1898
841	=cut	1899	=cut
842		1900
843	for (	1901	for (
844	["cf::object" => qw(contr pay_amount pay_player)],	1902	["cf::object" => qw(contr pay_amount pay_player map)],
845	["cf::object::player" => qw(player)],	1903	["cf::object::player" => qw(player)],
846	["cf::player" => qw(peaceful)],	1904	["cf::player" => qw(peaceful)],
		1905	["cf::map" => qw(trigger)],
847	) {	1906	) {
848	no strict 'refs';	1907	no strict 'refs';
849	my ($pkg, @funs) = @$_;	1908	my ($pkg, @funs) = @$_;
850	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1909	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
851	for @funs;	1910	for @funs;
…		…
961		2020
962	Immediately write the database to disk I<if it is dirty>.	2021	Immediately write the database to disk I<if it is dirty>.
963		2022
964	=cut	2023	=cut
965		2024
		2025	our $DB;
		2026
966	{	2027	{
967	my $db;
968	my $path = cf::localdir . "/database.pst";	2028	my $path = cf::localdir . "/database.pst";
969		2029
970	sub db_load() {	2030	sub db_load() {
971	warn "loading database $path\n";#d# remove later
972	$db = stat $path ? Storable::retrieve $path : { };	2031	$DB = stat $path ? Storable::retrieve $path : { };
973	}	2032	}
974		2033
975	my $pid;	2034	my $pid;
976		2035
977	sub db_save() {	2036	sub db_save() {
978	warn "saving database $path\n";#d# remove later
979	waitpid $pid, 0 if $pid;	2037	waitpid $pid, 0 if $pid;
980	if (0 == ($pid = fork)) {	2038	if (0 == ($pid = fork)) {
981	$db->{_meta}{version} = 1;	2039	$DB->{_meta}{version} = 1;
982	Storable::nstore $db, "$path~";	2040	Storable::nstore $DB, "$path~";
983	rename "$path~", $path;	2041	rename "$path~", $path;
984	cf::_exit 0 if defined $pid;	2042	cf::_exit 0 if defined $pid;
985	}	2043	}
986	}	2044	}
987		2045
…		…
990	sub db_sync() {	2048	sub db_sync() {
991	db_save if $dirty;	2049	db_save if $dirty;
992	undef $dirty;	2050	undef $dirty;
993	}	2051	}
994		2052
995	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2053	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
996	db_sync;	2054	db_sync;
997	});	2055	});
998		2056
999	sub db_dirty() {	2057	sub db_dirty() {
1000	$dirty = 1;	2058	$dirty = 1;
1001	$idle->start;	2059	$idle->start;
1002	}	2060	}
1003		2061
1004	sub db_get($;$) {	2062	sub db_get($;$) {
1005	@_ >= 2	2063	@_ >= 2
1006	? $db->{$_[0]}{$_[1]}	2064	? $DB->{$_[0]}{$_[1]}
1007	: ($db->{$_[0]} ||= { })	2065	: ($DB->{$_[0]} ||= { })
1008	}	2066	}
1009		2067
1010	sub db_put($$;$) {	2068	sub db_put($$;$) {
1011	if (@_ >= 3) {	2069	if (@_ >= 3) {
1012	$db->{$_[0]}{$_[1]} = $_[2];	2070	$DB->{$_[0]}{$_[1]} = $_[2];
1013	} else {	2071	} else {
1014	$db->{$_[0]} = $_[1];	2072	$DB->{$_[0]} = $_[1];
1015	}	2073	}
1016	db_dirty;	2074	db_dirty;
1017	}	2075	}
1018		2076
1019	attach_global	2077	cf::global->attach (
1020	prio => 10000,	2078	prio => 10000,
1021	on_cleanup => sub {	2079	on_cleanup => sub {
1022	db_sync;	2080	db_sync;
1023	},	2081	},
1024	;	2082	);
1025	}	2083	}
1026		2084
1027	#############################################################################	2085	#############################################################################
1028	# the server's main()	2086	# the server's main()
1029		2087
		2088	sub cfg_load {
		2089	open my $fh, "<:utf8", cf::confdir . "/config"
		2090	or return;
		2091
		2092	local $/;
		2093	*CFG = YAML::Syck::Load <$fh>;
		2094
		2095	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2096
		2097	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2098	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2099
		2100	if (exists $CFG{mlockall}) {
		2101	eval {
		2102	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2103	and die "WARNING: m(un)lockall failed: $!\n";
		2104	};
		2105	warn $@ if $@;
		2106	}
		2107	}
		2108
1030	sub main {	2109	sub main {
		2110	# we must not ever block the main coroutine
		2111	local $Coro::idle = sub {
		2112	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2113	async { Event::one_event };
		2114	};
		2115
		2116	cfg_load;
1031	db_load;	2117	db_load;
1032	load_extensions;	2118	load_extensions;
1033	Event::loop;	2119	Event::loop;
1034	}	2120	}
1035		2121
1036	#############################################################################	2122	#############################################################################
1037	# initialisation	2123	# initialisation
1038		2124
1039	sub _perl_reload(&) {	2125	sub reload() {
1040	my ($msg) = @_;	2126	# can/must only be called in main
		2127	if ($Coro::current != $Coro::main) {
		2128	warn "can only reload from main coroutine\n";
		2129	return;
		2130	}
1041		2131
1042	$msg->("reloading...");	2132	warn "reloading...";
		2133
		2134	my $guard = freeze_mainloop;
		2135	cf::emergency_save;
1043		2136
1044	eval {	2137	eval {
		2138	# if anything goes wrong in here, we should simply crash as we already saved
		2139
1045	# cancel all watchers	2140	# cancel all watchers
1046	$_->cancel for Event::all_watchers;	2141	for (Event::all_watchers) {
		2142	$_->cancel if $_->data & WF_AUTOCANCEL;
		2143	}
		2144
		2145	# cancel all extension coros
		2146	$_->cancel for values %EXT_CORO;
		2147	%EXT_CORO = ();
1047		2148
1048	# unload all extensions	2149	# unload all extensions
1049	for (@exts) {	2150	for (@exts) {
1050	$msg->("unloading <$_>");	2151	warn "unloading <$_>";
1051	unload_extension $_;	2152	unload_extension $_;
1052	}	2153	}
1053		2154
1054	# unload all modules loaded from $LIBDIR	2155	# unload all modules loaded from $LIBDIR
1055	while (my ($k, $v) = each %INC) {	2156	while (my ($k, $v) = each %INC) {
1056	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2157	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1057		2158
1058	$msg->("removing <$k>");	2159	warn "removing <$k>";
1059	delete $INC{$k};	2160	delete $INC{$k};
1060		2161
1061	$k =~ s/\.pm$//;	2162	$k =~ s/\.pm$//;
1062	$k =~ s/\//::/g;	2163	$k =~ s/\//::/g;
1063		2164
…		…
1068	Symbol::delete_package $k;	2169	Symbol::delete_package $k;
1069	}	2170	}
1070		2171
1071	# sync database to disk	2172	# sync database to disk
1072	cf::db_sync;	2173	cf::db_sync;
		2174	IO::AIO::flush;
1073		2175
1074	# get rid of safe::, as good as possible	2176	# get rid of safe::, as good as possible
1075	Symbol::delete_package "safe::$_"	2177	Symbol::delete_package "safe::$_"
1076	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2178	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1077		2179
1078	# remove register_script_function callbacks	2180	# remove register_script_function callbacks
1079	# TODO	2181	# TODO
1080		2182
1081	# unload cf.pm "a bit"	2183	# unload cf.pm "a bit"
…		…
1084	# don't, removes xs symbols, too,	2186	# don't, removes xs symbols, too,
1085	# and global variables created in xs	2187	# and global variables created in xs
1086	#Symbol::delete_package __PACKAGE__;	2188	#Symbol::delete_package __PACKAGE__;
1087		2189
1088	# reload cf.pm	2190	# reload cf.pm
1089	$msg->("reloading cf.pm");	2191	warn "reloading cf.pm";
1090	require cf;	2192	require cf;
		2193	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1091		2194
1092	# load database again	2195	# load config and database again
		2196	cf::cfg_load;
1093	cf::db_load;	2197	cf::db_load;
1094		2198
1095	# load extensions	2199	# load extensions
1096	$msg->("load extensions");	2200	warn "load extensions";
1097	cf::load_extensions;	2201	cf::load_extensions;
1098		2202
1099	# reattach attachments to objects	2203	# reattach attachments to objects
1100	$msg->("reattach");	2204	warn "reattach";
1101	_global_reattach;	2205	_global_reattach;
		2206	reattach $_ for values %MAP;
1102	};	2207	};
1103	$msg->($@) if $@;
1104		2208
1105	$msg->("reloaded");	2209	if ($@) {
		2210	warn $@;
		2211	warn "error while reloading, exiting.";
		2212	exit 1;
		2213	}
		2214
		2215	warn "reloaded successfully";
1106	};	2216	};
1107		2217
1108	sub perl_reload() {	2218	#############################################################################
1109	_perl_reload {
1110	warn $_[0];
1111	print "$_[0]\n";
1112	};
1113	}
1114		2219
		2220	unless ($LINK_MAP) {
		2221	$LINK_MAP = cf::map::new;
		2222
		2223	$LINK_MAP->width (41);
		2224	$LINK_MAP->height (41);
		2225	$LINK_MAP->alloc;
		2226	$LINK_MAP->path ("{link}");
		2227	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2228	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2229
		2230	# dirty hack because... archetypes are not yet loaded
		2231	Event->timer (
		2232	after => 10,
		2233	cb => sub {
		2234	$_[0]->w->cancel;
		2235
		2236	# provide some exits "home"
		2237	my $exit = cf::object::new "exit";
		2238
		2239	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2240	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2241	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2242
		2243	$LINK_MAP->insert ($exit->clone, 19, 19);
		2244	$LINK_MAP->insert ($exit->clone, 19, 20);
		2245	$LINK_MAP->insert ($exit->clone, 19, 21);
		2246	$LINK_MAP->insert ($exit->clone, 20, 19);
		2247	$LINK_MAP->insert ($exit->clone, 20, 21);
		2248	$LINK_MAP->insert ($exit->clone, 21, 19);
		2249	$LINK_MAP->insert ($exit->clone, 21, 20);
		2250	$LINK_MAP->insert ($exit->clone, 21, 21);
		2251
		2252	$exit->destroy;
		2253	});
		2254
		2255	$LINK_MAP->{deny_save} = 1;
		2256	$LINK_MAP->{deny_reset} = 1;
		2257
		2258	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2259	}
		2260
		2261	register "<global>", __PACKAGE__;
		2262
1115	register_command "perl-reload", 0, sub {	2263	register_command "reload" => sub {
1116	my ($who, $arg) = @_;	2264	my ($who, $arg) = @_;
1117		2265
1118	if ($who->flag (FLAG_WIZ)) {	2266	if ($who->flag (FLAG_WIZ)) {
1119	_perl_reload {	2267	$who->message ("start of reload.");
1120	warn $_[0];	2268	reload;
1121	$who->message ($_[0]);	2269	$who->message ("end of reload.");
1122	};
1123	}	2270	}
1124	};	2271	};
1125		2272
1126	register "<global>", __PACKAGE__;
1127
1128	unshift @INC, $LIBDIR;	2273	unshift @INC, $LIBDIR;
1129		2274
1130	$TICK_WATCHER = Event->timer (	2275	$TICK_WATCHER = Event->timer (
		2276	reentrant => 0,
1131	prio => 1,	2277	prio => 0,
1132	at => $NEXT_TICK || 1,	2278	at => $NEXT_TICK || $TICK,
		2279	data => WF_AUTOCANCEL,
1133	cb => sub {	2280	cb => sub {
1134	cf::server_tick; # one server iteration	2281	cf::server_tick; # one server iteration
1135		2282	$RUNTIME += $TICK;
1136	my $NOW = Event::time;
1137	$NEXT_TICK += $TICK;	2283	$NEXT_TICK += $TICK;
1138		2284
1139	# if we are delayed by four ticks, skip them all	2285	# if we are delayed by four ticks or more, skip them all
1140	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2286	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1141		2287
1142	$TICK_WATCHER->at ($NEXT_TICK);	2288	$TICK_WATCHER->at ($NEXT_TICK);
1143	$TICK_WATCHER->start;	2289	$TICK_WATCHER->start;
1144	},	2290	},
1145	);	2291	);
1146		2292
		2293	IO::AIO::max_poll_time $TICK * 0.2;
		2294
		2295	Event->io (
		2296	fd => IO::AIO::poll_fileno,
		2297	poll => 'r',
		2298	prio => 5,
		2299	data => WF_AUTOCANCEL,
		2300	cb => \&IO::AIO::poll_cb,
		2301	);
		2302
		2303	Event->timer (
		2304	data => WF_AUTOCANCEL,
		2305	after => 0,
		2306	interval => 10,
		2307	cb => sub {
		2308	(Coro::unblock_sub {
		2309	write_runtime
		2310	or warn "ERROR: unable to write runtime file: $!";
		2311	})->();
		2312	},
		2313	);
		2314
		2315	END { cf::emergency_save }
		2316
1147	1	2317	1
1148		2318

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