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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.84 by root, Mon Dec 11 02:54:57 2006 UTC vs.
Revision 1.151 by root, Mon Jan 8 20:59:15 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;
10	use IO::AIO ();	22	use IO::AIO 2.32 ();
11	use YAML::Syck ();	23	use YAML::Syck ();
12	use Time::HiRes;	24	use Time::HiRes;
13	use Event;	25
14	$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
15		27
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	29	$YAML::Syck::ImplicitUnicode = 1;
18		30
19	use strict;	31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		32
21	_init_vars;	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		34
23	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
24	our @EVENT;	39	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	40	our $LIBDIR = datadir . "/ext";
26		41
27	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
28	our $TICK_WATCHER;	43	our $TICK_WATCHER;
29	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
30		46
31	our %CFG;	47	our %CFG;
32		48
33	our $UPTIME; $UPTIME ||= time;	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;
34		77
35	#############################################################################	78	#############################################################################
36		79
37	=head2 GLOBAL VARIABLES	80	=head2 GLOBAL VARIABLES
38		81
39	=over 4	82	=over 4
40		83
41	=item $cf::UPTIME	84	=item $cf::UPTIME
42		85
43	The timestamp of the server start (so not actually an uptime).	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.
44		92
45	=item $cf::LIBDIR	93	=item $cf::LIBDIR
46		94
47	The perl library directory, where extensions and cf-specific modules can	95	The perl library directory, where extensions and cf-specific modules can
48	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.
49		101
50	=item $cf::TICK	102	=item $cf::TICK
51		103
52	The interval between server ticks, in seconds.	104	The interval between server ticks, in seconds.
53		105
…		…
61	=cut	113	=cut
62		114
63	BEGIN {	115	BEGIN {
64	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
65	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
66	$msg .= "\n"	120	$msg .= "\n"
67	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
68		122
69	print STDERR "cfperl: $msg";
70	LOG llevError, "cfperl: $msg";	123	LOG llevError, $msg;
71	};	124	};
72	}	125	}
73		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';
74	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
75		133
76	# 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
77	# within the Safe compartment.	135	# within the Safe compartment.
78	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
79	no strict 'refs';	143	no strict 'refs';
80	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
81	}	145	}
82		146
83	$Event::DIED = sub {	147	$Event::DIED = sub {
…		…
85	};	149	};
86		150
87	my %ext_pkg;	151	my %ext_pkg;
88	my @exts;	152	my @exts;
89	my @hook;	153	my @hook;
90	my %command;
91	my %extcmd;
92		154
93	=head2 UTILITY FUNCTIONS	155	=head2 UTILITY FUNCTIONS
94		156
95	=over 4	157	=over 4
96		158
…		…
118	sub to_json($) {	180	sub to_json($) {
119	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
120	JSON::Syck::Dump $_[0]	182	JSON::Syck::Dump $_[0]
121	}	183	}
122		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~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
123	=back	332	=back
124		333
125	=cut	334	=cut
126		335
127	#############################################################################	336	#############################################################################
128		337
129	=head2 EVENTS AND OBJECT ATTACHMENTS	338	package cf::path;
		339
		340	sub new {
		341	my ($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+).
130		467
131	=over 4	468	=over 4
132		469
133	=item $object->attach ($attachment, key => $value...)
134
135	=item $object->detach ($attachment)
136
137	Attach/detach a pre-registered attachment to an object.
138
139	=item $player->attach ($attachment, key => $value...)
140
141	=item $player->detach ($attachment)
142
143	Attach/detach a pre-registered attachment to a player.
144
145	=item $map->attach ($attachment, key => $value...)	470	=item $attachable->attach ($attachment, key => $value...)
146		471
147	=item $map->detach ($attachment)	472	=item $attachable->detach ($attachment)
148		473
149	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.
150		476
151	=item $bool = $object->attached ($name)	477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
152		479
153	=item $bool = $player->attached ($name)	480	$obj->attach (minesweeper => width => 10, height => 10);
154		481
155	=item $bool = $map->attached ($name)	482	=item $bool = $attachable->attached ($name)
156		483
157	Checks wether the named attachment is currently attached to the object.	484	Checks wether the named attachment is currently attached to the object.
158		485
159	=item cf::attach_global ...	486	=item cf::CLASS->attach ...
160		487
161	Attach handlers for global events.	488	=item cf::CLASS->detach ...
162		489
163	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
164	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:
165		524
166	=over 4	525	=over 4
167		526
168	=item prio => $number	527	=item prio => $number
169		528
…		…
171	by another C<prio> setting). Lower priority handlers get executed	530	by another C<prio> setting). Lower priority handlers get executed
172	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
173	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
174	unless you know what you are doing.	533	unless you know what you are doing.
175		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
176	=item on_I<event> => \&cb	541	=item on_I<event> => \&cb
177		542
178	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
179	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
180	handlers are recognised generally depends on the type of object these	545	handlers are recognised generally depends on the type of object these
…		…
189	package and register them. Only handlers for eevents supported by the	554	package and register them. Only handlers for eevents supported by the
190	object/class are recognised.	555	object/class are recognised.
191		556
192	=back	557	=back
193		558
194	=item cf::attach_to_type $object_type, $subtype, ...	559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
195		561
196	Attach handlers for a specific object type (e.g. TRANSPORT) and	562	cf::object::attachment sockpuppet =>
197	subtype. If C<$subtype> is zero or undef, matches all objects of the given	563	on_skill_attack => sub {
198	type.	564	my ($self, $victim) = @_;
199		565	...
200	=item cf::attach_to_objects ...
201
202	Attach handlers to all objects. Do not use this except for debugging or
203	very rare events, as handlers are (obviously) called for I<all> objects in
204	the game.
205
206	=item cf::attach_to_players ...
207
208	Attach handlers to all players.
209
210	=item cf::attach_to_maps ...
211
212	Attach handlers to all maps.
213
214	=item cf:register_attachment $name, ...
215
216	Register an attachment by name through which objects can refer to this
217	attachment.
218
219	=item cf:register_player_attachment $name, ...
220
221	Register an attachment by name through which players can refer to this
222	attachment.
223
224	=item cf:register_map_attachment $name, ...
225
226	Register an attachment by name through which maps can refer to this
227	attachment.
228
229	=cut
230
231	# the following variables are defined in .xs and must not be re-created
232	our @CB_GLOBAL = (); # registry for all global events
233	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
234	our @CB_PLAYER = ();
235	our @CB_TYPE = (); # registry for type (cf-object class) based events
236	our @CB_MAP = ();
237
238	my %attachment;
239
240	sub _attach_cb($\%$$$) {
241	my ($registry, $undo, $event, $prio, $cb) = @_;
242
243	use sort 'stable';
244
245	$cb = [$prio, $cb];
246
247	@{$registry->[$event]} = sort
248	{ $a->[0] cmp $b->[0] }
249	@{$registry->[$event] || []}, $cb;
250
251	push @{$undo->{cb}}, [$event, $cb];
252	}
253
254	# attach handles attaching event callbacks
255	# the only thing the caller has to do is pass the correct
256	# registry (== where the callback attaches to).
257	sub _attach(\@$@) {
258	my ($registry, $klass, @arg) = @_;
259
260	my $prio = 0;
261
262	my %undo = (
263	registry => $registry,
264	cb => [],
265	);
266
267	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
268
269	while (@arg) {
270	my $type = shift @arg;
271
272	if ($type eq "prio") {
273	$prio = shift @arg;
274
275	} elsif ($type eq "package") {
276	my $pkg = shift @arg;
277
278	while (my ($name, $id) = each %cb_id) {
279	if (my $cb = $pkg->can ($name)) {
280	_attach_cb $registry, %undo, $id, $prio, $cb;
281	}
282	}	566	}
283
284	} elsif (exists $cb_id{$type}) {
285	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
286
287	} elsif (ref $type) {
288	warn "attaching objects not supported, ignoring.\n";
289
290	} else {
291	shift @arg;
292	warn "attach argument '$type' not supported, ignoring.\n";
293	}
294	}
295
296	\%undo
297	}
298
299	sub _attach_attachment {
300	my ($obj, $name, %arg) = @_;
301
302	return if exists $obj->{_attachment}{$name};
303
304	my $res;
305
306	if (my $attach = $attachment{$name}) {
307	my $registry = $obj->registry;
308
309	for (@$attach) {
310	my ($klass, @attach) = @$_;
311	$res = _attach @$registry, $klass, @attach;
312	}
313
314	$obj->{$name} = \%arg;
315	} else {
316	warn "object uses attachment '$name' that is not available, postponing.\n";
317	}
318
319	$obj->{_attachment}{$name} = undef;
320
321	$res->{attachment} = $name;
322	$res
323	}
324
325	*cf::object::attach =
326	*cf::player::attach =
327	*cf::map::attach = sub {
328	my ($obj, $name, %arg) = @_;
329
330	_attach_attachment $obj, $name, %arg;
331	};
332
333	# all those should be optimised
334	*cf::object::detach =
335	*cf::player::detach =
336	*cf::map::detach = sub {
337	my ($obj, $name) = @_;
338
339	delete $obj->{_attachment}{$name};
340	reattach ($obj);
341	};
342
343	*cf::object::attached =
344	*cf::player::attached =
345	*cf::map::attached = sub {
346	my ($obj, $name) = @_;
347
348	exists $obj->{_attachment}{$name}
349	};
350
351	sub attach_global {
352	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
353	}
354
355	sub attach_to_type {
356	my $type = shift;
357	my $subtype = shift;
358
359	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
360	}
361
362	sub attach_to_objects {
363	_attach @CB_OBJECT, KLASS_OBJECT, @_
364	}
365
366	sub attach_to_players {
367	_attach @CB_PLAYER, KLASS_PLAYER, @_
368	}
369
370	sub attach_to_maps {
371	_attach @CB_MAP, KLASS_MAP, @_
372	}
373
374	sub register_attachment {
375	my $name = shift;
376
377	$attachment{$name} = [[KLASS_OBJECT, @_]];
378	}
379
380	sub register_player_attachment {
381	my $name = shift;
382
383	$attachment{$name} = [[KLASS_PLAYER, @_]];
384	}
385
386	sub register_map_attachment {
387	my $name = shift;
388
389	$attachment{$name} = [[KLASS_MAP, @_]];
390	}
391
392	our $override;
393	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
394
395	sub override {
396	$override = 1;
397	@invoke_results = ();
398	}
399
400	sub do_invoke {
401	my $event = shift;
402	my $callbacks = shift;
403
404	@invoke_results = ();
405
406	local $override;
407
408	for (@$callbacks) {
409	eval { &{$_->[1]} };
410
411	if ($@) {
412	warn "$@";
413	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
414	override;
415	}
416
417	return 1 if $override;
418	}
419
420	0	567	}
421	}
422		568
423	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	569	=item $attachable->valid
424
425	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
426
427	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
428
429	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
430
431	Generate a global/object/player/map-specific event with the given arguments.
432
433	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
434	removed in future versions), and there is no public API to access override
435	results (if you must, access C<@cf::invoke_results> directly).
436
437	=back
438
439	=cut
440
441	#############################################################################
442
443	=head2 METHODS VALID FOR ALL CORE OBJECTS
444
445	=over 4
446
447	=item $object->valid, $player->valid, $map->valid
448		570
449	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
450	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
451	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
452	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
453	exception.	575	exception.
454		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
455	=back	760	=back
456		761
457	=cut	762	=cut
458
459	*cf::object::valid =
460	*cf::player::valid =
461	*cf::map::valid = \&cf::_valid;
462		763
463	#############################################################################	764	#############################################################################
464	# object support	765	# object support
465		766
466	sub instantiate {
467	my ($obj, $data) = @_;
468
469	$data = from_json $data;
470
471	for (@$data) {
472	my ($name, $args) = @$_;
473
474	$obj->attach ($name, %{$args || {} });
475	}
476	}
477
478	# basically do the same as instantiate, without calling instantiate
479	sub reattach {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
480	my ($obj) = @_;	769	my ($obj) = @_;
		770
481	my $registry = $obj->registry;	771	my $registry = $obj->registry;
482		772
483	@$registry = ();	773	@$registry = ();
484		774
485	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
486		776
487	for my $name (keys %{ $obj->{_attachment} || {} }) {	777	for my $name (keys %{ $obj->{_attachment} || {} }) {
488	if (my $attach = $attachment{$name}) {	778	if (my $attach = $attachment{$name}) {
489	for (@$attach) {	779	for (@$attach) {
490	my ($klass, @attach) = @$_;	780	my ($klass, @attach) = @$_;
491	_attach @$registry, $klass, @attach;	781	_attach $registry, $klass, @attach;
492	}	782	}
493	} else {	783	} else {
494	warn "object uses attachment '$name' that is not available, postponing.\n";	784	warn "object uses attachment '$name' that is not available, postponing.\n";
495	}	785	}
496	}	786	}
497	}	787	}
498		788
499	sub object_freezer_save {	789	cf::attachable->attach (
500	my ($filename, $rdata, $objs) = @_;
501
502	if (length $$rdata) {
503	warn sprintf "saving %s (%d,%d)\n",
504	$filename, length $$rdata, scalar @$objs;
505
506	if (open my $fh, ">:raw", "$filename~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, $$rdata;
509	close $fh;
510
511	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
514	close $fh;
515	rename "$filename.pst~", "$filename.pst";
516	} else {
517	unlink "$filename.pst";
518	}
519
520	rename "$filename~", $filename;
521	} else {
522	warn "FATAL: $filename~: $!\n";
523	}
524	} else {
525	unlink $filename;
526	unlink "$filename.pst";
527	}
528	}
529
530	sub object_freezer_as_string {
531	my ($rdata, $objs) = @_;
532
533	use Data::Dumper;
534
535	$$rdata . Dumper $objs
536	}
537
538	sub object_thawer_load {
539	my ($filename) = @_;
540
541	local $/;
542
543	my $av;
544
545	#TODO: use sysread etc.
546	if (open my $data, "<:raw:perlio", $filename) {
547	$data = <$data>;
548	if (open my $pst, "<:raw:perlio", "$filename.pst") {
549	$av = eval { (Storable::thaw <$pst>)->{objs} };
550	}
551	return ($data, $av);
552	}
553
554	()
555	}
556
557	attach_to_objects
558	prio => -1000000,	790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
559	on_clone => sub {	803	on_clone => sub {
560	my ($src, $dst) = @_;	804	my ($src, $dst) = @_;
561		805
562	@{$dst->registry} = @{$src->registry};	806	@{$dst->registry} = @{$src->registry};
563		807
564	%$dst = %$src;	808	%$dst = %$src;
565		809
566	%{$dst->{_attachment}} = %{$src->{_attachment}}	810	%{$dst->{_attachment}} = %{$src->{_attachment}}
567	if exists $src->{_attachment};	811	if exists $src->{_attachment};
568	},	812	},
569	;	813	);
		814
		815	sub object_freezer_save {
		816	my ($filename, $rdata, $objs) = @_;
		817
		818	sync_job {
		819	if (length $$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	}
570		879
571	#############################################################################	880	#############################################################################
572	# old plug-in events	881	# command handling &c
573		882
574	sub inject_event {	883	=item cf::register_command $name => \&callback($ob,$args);
575	my $extension = shift;
576	my $event_code = shift;
577		884
578	my $cb = $hook[$event_code]{$extension}	885	Register a callback for execution when the client sends the user command
579	or return;	886	$name.
580		887
581	&$cb	888	=cut
582	}
583
584	sub inject_global_event {
585	my $event = shift;
586
587	my $cb = $hook[$event]
588	or return;
589
590	List::Util::max map &$_, values %$cb
591	}
592
593	sub inject_command {
594	my ($name, $obj, $params) = @_;
595
596	for my $cmd (@{ $command{$name} }) {
597	$cmd->[1]->($obj, $params);
598	}
599
600	-1
601	}
602		889
603	sub register_command {	890	sub register_command {
604	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
605		892
606	my $caller = caller;	893	my $caller = caller;
607	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
608		895
609	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
610	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
611	}	897	}
		898
		899	=item cf::register_extcmd $name => \&callback($pl,$packet);
		900
		901	Register a callbackf ro execution when the client sends an extcmd packet.
		902
		903	If the callback returns something, it is sent back as if reply was being
		904	called.
		905
		906	=cut
612		907
613	sub register_extcmd {	908	sub register_extcmd {
614	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
615		910
616	my $caller = caller;	911	my $caller = caller;
617	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
618		913
619	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
620	}	915	}
		916
		917	cf::player->attach (
		918	on_command => sub {
		919	my ($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	);
621		948
622	sub register {	949	sub register {
623	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
624		951
625	#TODO	952	#TODO
…		…
668	# for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
669	# delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
670	# }	997	# }
671		998
672	# remove commands	999	# remove commands
673	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
674	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
675		1002
676	if (@cb) {	1003	if (@cb) {
677	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
678	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
679	} else {	1005	} else {
680	delete $command{$name};
681	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
682	}	1007	}
683	}	1008	}
684		1009
685	# remove extcmds	1010	# remove extcmds
686	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
687	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
688	}	1013	}
689		1014
690	if (my $cb = $pkg->can ("unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
691	eval {	1016	eval {
692	$cb->($pkg);	1017	$cb->($pkg);
…		…
696		1021
697	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
698	}	1023	}
699		1024
700	sub load_extensions {	1025	sub load_extensions {
701	my $LIBDIR = maps_directory "perl";
702
703	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
704	next unless -r $ext;	1027	next unless -r $ext;
705	eval {	1028	eval {
706	load_extension $ext;	1029	load_extension $ext;
707	1	1030	1
708	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
709	}	1032	}
710	}	1033	}
711		1034
712	#############################################################################	1035	#############################################################################
713	# extcmd framework, basically convert ext <msg>
714	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
715
716	attach_to_players
717	on_extcmd => sub {
718	my ($pl, $buf) = @_;
719
720	my $msg = eval { from_json $buf };
721
722	if (ref $msg) {
723	if (my $cb = $extcmd{$msg->{msgtype}}) {
724	if (my %reply = $cb->[0]->($pl, $msg)) {
725	$pl->ext_reply ($msg->{msgid}, %reply);
726	}
727	}
728	} else {
729	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
730	}
731
732	cf::override;
733	},
734	;
735
736	#############################################################################
737	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
738		1037
739	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
740	my ($map) = @_;	1039	my ($map) = @_;
741		1040
…		…
743	defined $path or return;	1042	defined $path or return;
744		1043
745	unlink "$path.pst";	1044	unlink "$path.pst";
746	};	1045	};
747		1046
748	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
749		1048
750	#############################################################################	1049	#############################################################################
751	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
752		1051
753	sub all_objects(@) {	1052	sub all_objects(@) {
754	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
755	}	1054	}
756		1055
757	# TODO: compatibility cruft, remove when no longer needed	1056	# TODO: compatibility cruft, remove when no longer needed
758	attach_to_players	1057	cf::player->attach (
759	on_load => sub {	1058	on_load => sub {
760	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
761		1060
762	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
763	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
765		1064
766	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
767	}	1066	}
768	}	1067	}
769	},	1068	},
770	;	1069	);
771		1070
772	#############################################################################	1071	#############################################################################
773		1072
774	=head2 CORE EXTENSIONS	1073	=head2 CORE EXTENSIONS
775		1074
776	Functions and methods that extend core crossfire objects.	1075	Functions and methods that extend core crossfire objects.
777		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
778	=over 4	1083	=over 4
779		1084
780	=item cf::player::exists $login	1085	=item cf::player::find $login
781		1086
782	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
783		1088
784	=cut	1089	=cut
785		1090
786	sub cf::player::exists($) {	1091	sub playerdir($) {
787	cf::player::find $_[0]	1092	cf::localdir
788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	. "/"
		1094	. cf::playerdir
		1095	. "/"
		1096	. (ref $_[0] ? $_[0]->ob->name : $_[0])
789	}	1097	}
		1098
		1099	sub path($) {
		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	$cf::PLAYER{$_[0]} || do {
		1125	my $pl = load_pl path $login
		1126	or return;
		1127	$cf::PLAYER{$login} = $pl
		1128	}
		1129	}
		1130	}
		1131
		1132	sub save($) {
		1133	my ($pl) = @_;
		1134
		1135	return if $pl->{deny_save};
		1136
		1137	my $path = path $pl;
		1138	my $guard = cf::lock_acquire "user_save:$path";
		1139
		1140	return if $pl->{deny_save};
		1141
		1142	Coro::AIO::aio_mkdir playerdir $pl, 0770;
		1143	$pl->{last_save} = $cf::RUNTIME;
		1144
		1145	$pl->save_pl ($path);
		1146	Coro::cede;
		1147	}
		1148
		1149	sub new($) {
		1150	my ($login) = @_;
		1151
		1152	my $self = create;
		1153
		1154	$self->ob->name ($login);
		1155	$self->{deny_save} = 1;
		1156
		1157	$cf::PLAYER{$login} = $self;
		1158
		1159	$self
		1160	}
		1161
		1162	sub quit_character {
		1163	my ($pl) = @_;
		1164
		1165	$pl->{deny_save} = 1;
		1166	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1167
		1168	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1169	$pl->deactivate;
		1170	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1171	$pl->ns->destroy if $pl->ns;
		1172
		1173	my $path = playerdir $pl;
		1174	my $temp = "$path~$cf::RUNTIME~deleting~";
		1175	Coro::AIO::aio_rename $path, $temp;
		1176	delete $cf::PLAYER{$pl->ob->name};
		1177	$pl->destroy;
		1178	IO::AIO::aio_rmtree $temp;
		1179	}
		1180
		1181	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1182
		1183	Sends an ext reply to the player.
		1184
		1185	=cut
		1186
		1187	sub ext_reply($$$%) {
		1188	my ($self, $id, %msg) = @_;
		1189
		1190	$msg{msgid} = $id;
		1191
		1192	$self->send ("ext " . cf::to_json \%msg);
		1193	}
		1194
		1195	package cf;
		1196
		1197	=back
		1198
		1199
		1200	=head3 cf::map
		1201
		1202	=over 4
		1203
		1204	=cut
		1205
		1206	package cf::map;
		1207
		1208	use Fcntl;
		1209	use Coro::AIO;
		1210
		1211	our $MAX_RESET = 3600;
		1212	our $DEFAULT_RESET = 3000;
		1213
		1214	sub generate_random_map {
		1215	my ($path, $rmp) = @_;
		1216
		1217	# mit "rum" bekleckern, nicht
		1218	cf::map::_create_random_map
		1219	$path,
		1220	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1221	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1222	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1223	$rmp->{exit_on_final_map},
		1224	$rmp->{xsize}, $rmp->{ysize},
		1225	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1226	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1227	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1228	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1229	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1230	(cf::region::find $rmp->{region})
		1231	}
		1232
		1233	# and all this just because we cannot iterate over
		1234	# all maps in C++...
		1235	sub change_all_map_light {
		1236	my ($change) = @_;
		1237
		1238	$_->change_map_light ($change)
		1239	for grep $_->outdoor, values %cf::MAP;
		1240	}
		1241
		1242	sub try_load_header($) {
		1243	my ($path) = @_;
		1244
		1245	utf8::encode $path;
		1246	aio_open $path, O_RDONLY, 0
		1247	or return;
		1248
		1249	my $map = cf::map::new
		1250	or return;
		1251
		1252	# for better error messages only, will be overwritten
		1253	$map->path ($path);
		1254
		1255	$map->load_header ($path)
		1256	or return;
		1257
		1258	$map->{load_path} = $path;
		1259
		1260	$map
		1261	}
		1262
		1263	sub find;
		1264	sub find {
		1265	my ($path, $origin) = @_;
		1266
		1267	#warn "find<$path,$origin>\n";#d#
		1268
		1269	$path = new cf::path $path, $origin && $origin->path;
		1270	my $key = $path->as_string;
		1271
		1272	cf::lock_wait "map_find:$key";
		1273
		1274	$cf::MAP{$key} || do {
		1275	my $guard = cf::lock_acquire "map_find:$key";
		1276
		1277	# do it the slow way
		1278	my $map = try_load_header $path->save_path;
		1279
		1280	Coro::cede;
		1281
		1282	if ($map) {
		1283	$map->last_access ((delete $map->{last_access})
		1284	|| $cf::RUNTIME); #d#
		1285	# safety
		1286	$map->{instantiate_time} = $cf::RUNTIME
		1287	if $map->{instantiate_time} > $cf::RUNTIME;
		1288	} else {
		1289	if (my $rmp = $path->random_map_params) {
		1290	$map = generate_random_map $key, $rmp;
		1291	} else {
		1292	$map = try_load_header $path->load_path;
		1293	}
		1294
		1295	$map or return;
		1296
		1297	$map->{load_original} = 1;
		1298	$map->{instantiate_time} = $cf::RUNTIME;
		1299	$map->last_access ($cf::RUNTIME);
		1300	$map->instantiate;
		1301
		1302	# per-player maps become, after loading, normal maps
		1303	$map->per_player (0) if $path->{user_rel};
		1304	}
		1305
		1306	$map->path ($key);
		1307	$map->{path} = $path;
		1308	$map->{last_save} = $cf::RUNTIME;
		1309
		1310	Coro::cede;
		1311
		1312	if ($map->should_reset) {
		1313	$map->reset;
		1314	undef $guard;
		1315	$map = find $path
		1316	or return;
		1317	}
		1318
		1319	$cf::MAP{$key} = $map
		1320	}
		1321	}
		1322
		1323	sub load {
		1324	my ($self) = @_;
		1325
		1326	my $path = $self->{path};
		1327	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1328
		1329	return if $self->in_memory != cf::MAP_SWAPPED;
		1330
		1331	$self->in_memory (cf::MAP_LOADING);
		1332
		1333	$self->alloc;
		1334	$self->load_objects ($self->{load_path}, 1)
		1335	or return;
		1336
		1337	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1338	if delete $self->{load_original};
		1339
		1340	if (my $uniq = $path->uniq_path) {
		1341	utf8::encode $uniq;
		1342	if (aio_open $uniq, O_RDONLY, 0) {
		1343	$self->clear_unique_items;
		1344	$self->load_objects ($uniq, 0);
		1345	}
		1346	}
		1347
		1348	Coro::cede;
		1349
		1350	# now do the right thing for maps
		1351	$self->link_multipart_objects;
		1352
		1353	if ($self->{path}->is_style_map) {
		1354	$self->{deny_save} = 1;
		1355	$self->{deny_reset} = 1;
		1356	} else {
		1357	$self->fix_auto_apply;
		1358	$self->decay_objects;
		1359	$self->update_buttons;
		1360	$self->set_darkness_map;
		1361	$self->difficulty ($self->estimate_difficulty)
		1362	unless $self->difficulty;
		1363	$self->activate;
		1364	}
		1365
		1366	Coro::cede;
		1367
		1368	$self->in_memory (cf::MAP_IN_MEMORY);
		1369	}
		1370
		1371	sub find_sync {
		1372	my ($path, $origin) = @_;
		1373
		1374	cf::sync_job { cf::map::find $path, $origin }
		1375	}
		1376
		1377	sub do_load_sync {
		1378	my ($map) = @_;
		1379
		1380	cf::sync_job { $map->load };
		1381	}
		1382
		1383	sub save {
		1384	my ($self) = @_;
		1385
		1386	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1387
		1388	$self->{last_save} = $cf::RUNTIME;
		1389
		1390	return unless $self->dirty;
		1391
		1392	my $save = $self->{path}->save_path; utf8::encode $save;
		1393	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1394
		1395	$self->{load_path} = $save;
		1396
		1397	return if $self->{deny_save};
		1398
		1399	local $self->{last_access} = $self->last_access;#d#
		1400
		1401	cf::async {
		1402	$_->contr->save for $self->players;
		1403	};
		1404
		1405	if ($uniq) {
		1406	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1407	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1408	} else {
		1409	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1410	}
		1411	}
		1412
		1413	sub swap_out {
		1414	my ($self) = @_;
		1415
		1416	# save first because save cedes
		1417	$self->save;
		1418
		1419	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1420
		1421	return if $self->players;
		1422	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1423	return if $self->{deny_save};
		1424
		1425	$self->clear;
		1426	$self->in_memory (cf::MAP_SWAPPED);
		1427	}
		1428
		1429	sub reset_at {
		1430	my ($self) = @_;
		1431
		1432	# TODO: safety, remove and allow resettable per-player maps
		1433	return 1e99 if $self->{path}{user_rel};
		1434	return 1e99 if $self->{deny_reset};
		1435
		1436	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1437	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1438
		1439	$time + $to
		1440	}
		1441
		1442	sub should_reset {
		1443	my ($self) = @_;
		1444
		1445	$self->reset_at <= $cf::RUNTIME
		1446	}
		1447
		1448	sub unlink_save {
		1449	my ($self) = @_;
		1450
		1451	utf8::encode (my $save = $self->{path}->save_path);
		1452	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1453	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1454	}
		1455
		1456	sub rename {
		1457	my ($self, $new_path) = @_;
		1458
		1459	$self->unlink_save;
		1460
		1461	delete $cf::MAP{$self->path};
		1462	$self->{path} = new cf::path $new_path;
		1463	$self->path ($self->{path}->as_string);
		1464	$cf::MAP{$self->path} = $self;
		1465
		1466	$self->save;
		1467	}
		1468
		1469	sub reset {
		1470	my ($self) = @_;
		1471
		1472	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1473
		1474	return if $self->players;
		1475	return if $self->{path}{user_rel};#d#
		1476
		1477	warn "resetting map ", $self->path;#d#
		1478
		1479	delete $cf::MAP{$self->path};
		1480
		1481	$_->clear_links_to ($self) for values %cf::MAP;
		1482
		1483	$self->unlink_save;
		1484	$self->destroy;
		1485	}
		1486
		1487	my $nuke_counter = "aaaa";
		1488
		1489	sub nuke {
		1490	my ($self) = @_;
		1491
		1492	$self->{deny_save} = 1;
		1493	$self->reset_timeout (1);
		1494	$self->rename ("{nuke}/" . ($nuke_counter++));
		1495	$self->reset; # polite request, might not happen
		1496	}
		1497
		1498	sub customise_for {
		1499	my ($map, $ob) = @_;
		1500
		1501	if ($map->per_player) {
		1502	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1503	}
		1504
		1505	$map
		1506	}
		1507
		1508	sub emergency_save {
		1509	my $freeze_guard = cf::freeze_mainloop;
		1510
		1511	warn "enter emergency perl save\n";
		1512
		1513	cf::sync_job {
		1514	warn "begin emergency player save\n";
		1515	$_->save for values %cf::PLAYER;
		1516	warn "end emergency player save\n";
		1517
		1518	warn "begin emergency map save\n";
		1519	$_->save for values %cf::MAP;
		1520	warn "end emergency map save\n";
		1521	};
		1522
		1523	warn "leave emergency perl save\n";
		1524	}
		1525
		1526	package cf;
		1527
		1528	=back
		1529
		1530
		1531	=head3 cf::object::player
		1532
		1533	=over 4
790		1534
791	=item $player_object->reply ($npc, $msg[, $flags])	1535	=item $player_object->reply ($npc, $msg[, $flags])
792		1536
793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1537	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
794	can be C<undef>. Does the right thing when the player is currently in a	1538	can be C<undef>. Does the right thing when the player is currently in a
…		…
796		1540
797	=cut	1541	=cut
798		1542
799	# rough implementation of a future "reply" method that works	1543	# rough implementation of a future "reply" method that works
800	# with dialog boxes.	1544	# with dialog boxes.
		1545	#TODO: the first argument must go, split into a $npc->reply_to ( method
801	sub cf::object::player::reply($$$;$) {	1546	sub cf::object::player::reply($$$;$) {
802	my ($self, $npc, $msg, $flags) = @_;	1547	my ($self, $npc, $msg, $flags) = @_;
803		1548
804	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1549	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
805		1550
…		…
809	$msg = $npc->name . " says: $msg" if $npc;	1554	$msg = $npc->name . " says: $msg" if $npc;
810	$self->message ($msg, $flags);	1555	$self->message ($msg, $flags);
811	}	1556	}
812	}	1557	}
813		1558
814	=item $player->ext_reply ($msgid, $msgtype, %msg)
815
816	Sends an ext reply to the player.
817
818	=cut
819
820	sub cf::player::ext_reply($$$%) {
821	my ($self, $id, %msg) = @_;
822
823	$msg{msgid} = $id;
824
825	$self->send ("ext " . to_json \%msg);
826	}
827
828	=item $player_object->may ("access")	1559	=item $player_object->may ("access")
829		1560
830	Returns wether the given player is authorized to access resource "access"	1561	Returns wether the given player is authorized to access resource "access"
831	(e.g. "command_wizcast").	1562	(e.g. "command_wizcast").
832		1563
…		…
839	(ref $cf::CFG{"may_$access"}	1570	(ref $cf::CFG{"may_$access"}
840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1571	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
841	: $cf::CFG{"may_$access"})	1572	: $cf::CFG{"may_$access"})
842	}	1573	}
843		1574
844	=cut	1575	=item $player_object->enter_link
845		1576
846	#############################################################################	1577	Freezes the player and moves him/her to a special map (C<{link}>).
		1578
		1579	The player should be reaosnably safe there for short amounts of time. You
		1580	I<MUST> call C<leave_link> as soon as possible, though.
		1581
		1582	=item $player_object->leave_link ($map, $x, $y)
		1583
		1584	Moves the player out of the specila link map onto the given map. If the
		1585	map is not valid (or omitted), the player will be moved back to the
		1586	location he/she was before the call to C<enter_link>, or, if that fails,
		1587	to the emergency map position.
		1588
		1589	Might block.
		1590
		1591	=cut
		1592
		1593	sub cf::object::player::enter_link {
		1594	my ($self) = @_;
		1595
		1596	$self->deactivate_recursive;
		1597
		1598	return if $self->map == $LINK_MAP;
		1599
		1600	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1601	if $self->map;
		1602
		1603	$self->enter_map ($LINK_MAP, 20, 20);
		1604	}
		1605
		1606	sub cf::object::player::leave_link {
		1607	my ($self, $map, $x, $y) = @_;
		1608
		1609	my $link_pos = delete $self->{_link_pos};
		1610
		1611	unless ($map) {
		1612	# restore original map position
		1613	($map, $x, $y) = @{ $link_pos || [] };
		1614	$map = cf::map::find $map;
		1615
		1616	unless ($map) {
		1617	($map, $x, $y) = @$EMERGENCY_POSITION;
		1618	$map = cf::map::find $map
		1619	or die "FATAL: cannot load emergency map\n";
		1620	}
		1621	}
		1622
		1623	($x, $y) = (-1, -1)
		1624	unless (defined $x) && (defined $y);
		1625
		1626	# use -1 or undef as default coordinates, not 0, 0
		1627	($x, $y) = ($map->enter_x, $map->enter_y)
		1628	if $x <=0 && $y <= 0;
		1629
		1630	$map->load;
		1631
		1632	return unless $self->contr->active;
		1633	$self->activate_recursive;
		1634	$self->enter_map ($map, $x, $y);
		1635	}
		1636
		1637	cf::player->attach (
		1638	on_logout => sub {
		1639	my ($pl) = @_;
		1640
		1641	# abort map switching before logout
		1642	if ($pl->ob->{_link_pos}) {
		1643	cf::sync_job {
		1644	$pl->ob->leave_link
		1645	};
		1646	}
		1647	},
		1648	on_login => sub {
		1649	my ($pl) = @_;
		1650
		1651	# try to abort aborted map switching on player login :)
		1652	# should happen only on crashes
		1653	if ($pl->ob->{_link_pos}) {
		1654	$pl->ob->enter_link;
		1655	(async {
		1656	# we need this sleep as the login has a concurrent enter_exit running
		1657	# and this sleep increases chances of the player not ending up in scorn
		1658	$pl->ob->reply (undef,
		1659	"There was an internal problem at your last logout, "
		1660	. "the server will try to bring you to your intended destination in a second.",
		1661	cf::NDI_RED);
		1662	Coro::Timer::sleep 1;
		1663	$pl->ob->leave_link;
		1664	})->prio (2);
		1665	}
		1666	},
		1667	);
		1668
		1669	=item $player_object->goto ($path, $x, $y)
		1670
		1671	=cut
		1672
		1673	sub cf::object::player::goto {
		1674	my ($self, $path, $x, $y) = @_;
		1675
		1676	$self->enter_link;
		1677
		1678	(async {
		1679	$path = new cf::path $path;
		1680
		1681	my $map = cf::map::find $path->as_string;
		1682	$map = $map->customise_for ($self) if $map;
		1683
		1684	# warn "entering ", $map->path, " at ($x, $y)\n"
		1685	# if $map;
		1686
		1687	$map or $map->cluck ("oy");#d#
		1688	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1689
		1690	$self->leave_link ($map, $x, $y);
		1691	})->prio (1);
		1692	}
		1693
		1694	=item $player_object->enter_exit ($exit_object)
		1695
		1696	=cut
		1697
		1698	sub parse_random_map_params {
		1699	my ($spec) = @_;
		1700
		1701	my $rmp = { # defaults
		1702	xsize => 10,
		1703	ysize => 10,
		1704	};
		1705
		1706	for (split /\n/, $spec) {
		1707	my ($k, $v) = split /\s+/, $_, 2;
		1708
		1709	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1710	}
		1711
		1712	$rmp
		1713	}
		1714
		1715	sub prepare_random_map {
		1716	my ($exit) = @_;
		1717
		1718	# all this does is basically replace the /! path by
		1719	# a new random map path (?random/...) with a seed
		1720	# that depends on the exit object
		1721
		1722	my $rmp = parse_random_map_params $exit->msg;
		1723
		1724	if ($exit->map) {
		1725	$rmp->{region} = $exit->map->region_name;
		1726	$rmp->{origin_map} = $exit->map->path;
		1727	$rmp->{origin_x} = $exit->x;
		1728	$rmp->{origin_y} = $exit->y;
		1729	}
		1730
		1731	$rmp->{random_seed} ||= $exit->random_seed;
		1732
		1733	my $data = cf::to_json $rmp;
		1734	my $md5 = Digest::MD5::md5_hex $data;
		1735
		1736	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1737	aio_write $fh, 0, (length $data), $data, 0;
		1738
		1739	$exit->slaying ("?random/$md5");
		1740	$exit->msg (undef);
		1741	}
		1742	}
		1743
		1744	sub cf::object::player::enter_exit {
		1745	my ($self, $exit) = @_;
		1746
		1747	return unless $self->type == cf::PLAYER;
		1748
		1749	$self->enter_link;
		1750
		1751	(async {
		1752	$self->deactivate_recursive; # just to be sure
		1753	unless (eval {
		1754	prepare_random_map $exit
		1755	if $exit->slaying eq "/!";
		1756
		1757	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1758	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1759
		1760	1;
		1761	}) {
		1762	$self->message ("Something went wrong deep within the crossfire server. "
		1763	. "I'll try to bring you back to the map you were before. "
		1764	. "Please report this to the dungeon master",
		1765	cf::NDI_UNIQUE | cf::NDI_RED);
		1766
		1767	warn "ERROR in enter_exit: $@";
		1768	$self->leave_link;
		1769	}
		1770	})->prio (1);
		1771	}
		1772
		1773	=head3 cf::client
		1774
		1775	=over 4
		1776
		1777	=item $client->send_drawinfo ($text, $flags)
		1778
		1779	Sends a drawinfo packet to the client. Circumvents output buffering so
		1780	should not be used under normal circumstances.
		1781
		1782	=cut
		1783
		1784	sub cf::client::send_drawinfo {
		1785	my ($self, $text, $flags) = @_;
		1786
		1787	utf8::encode $text;
		1788	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1789	}
		1790
		1791
		1792	=item $success = $client->query ($flags, "text", \&cb)
		1793
		1794	Queues a query to the client, calling the given callback with
		1795	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1796	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1797
		1798	Queries can fail, so check the return code. Or don't, as queries will become
		1799	reliable at some point in the future.
		1800
		1801	=cut
		1802
		1803	sub cf::client::query {
		1804	my ($self, $flags, $text, $cb) = @_;
		1805
		1806	return unless $self->state == ST_PLAYING
		1807	|| $self->state == ST_SETUP
		1808	|| $self->state == ST_CUSTOM;
		1809
		1810	$self->state (ST_CUSTOM);
		1811
		1812	utf8::encode $text;
		1813	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1814
		1815	$self->send_packet ($self->{query_queue}[0][0])
		1816	if @{ $self->{query_queue} } == 1;
		1817	}
		1818
		1819	cf::client->attach (
		1820	on_reply => sub {
		1821	my ($ns, $msg) = @_;
		1822
		1823	# this weird shuffling is so that direct followup queries
		1824	# get handled first
		1825	my $queue = delete $ns->{query_queue}
		1826	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1827
		1828	(shift @$queue)->[1]->($msg);
		1829
		1830	push @{ $ns->{query_queue} }, @$queue;
		1831
		1832	if (@{ $ns->{query_queue} } == @$queue) {
		1833	if (@$queue) {
		1834	$ns->send_packet ($ns->{query_queue}[0][0]);
		1835	} else {
		1836	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1837	}
		1838	}
		1839	},
		1840	);
		1841
		1842	=item $client->async (\&cb)
		1843
		1844	Create a new coroutine, running the specified callback. The coroutine will
		1845	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1846	or loss of connection).
		1847
		1848	=cut
		1849
		1850	sub cf::client::async {
		1851	my ($self, $cb) = @_;
		1852
		1853	my $coro = &Coro::async ($cb);
		1854
		1855	$coro->on_destroy (sub {
		1856	delete $self->{_coro}{$coro+0};
		1857	});
		1858
		1859	$self->{_coro}{$coro+0} = $coro;
		1860
		1861	$coro
		1862	}
		1863
		1864	cf::client->attach (
		1865	on_destroy => sub {
		1866	my ($ns) = @_;
		1867
		1868	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1869	},
		1870	);
		1871
		1872	=back
		1873
847		1874
848	=head2 SAFE SCRIPTING	1875	=head2 SAFE SCRIPTING
849		1876
850	Functions that provide a safe environment to compile and execute	1877	Functions that provide a safe environment to compile and execute
851	snippets of perl code without them endangering the safety of the server	1878	snippets of perl code without them endangering the safety of the server
…		…
866		1893
867	=pod	1894	=pod
868		1895
869	The following fucntions and emthods are available within a safe environment:	1896	The following fucntions and emthods are available within a safe environment:
870		1897
871	cf::object contr pay_amount pay_player	1898	cf::object contr pay_amount pay_player map
872	cf::object::player player	1899	cf::object::player player
873	cf::player peaceful	1900	cf::player peaceful
		1901	cf::map trigger
874		1902
875	=cut	1903	=cut
876		1904
877	for (	1905	for (
878	["cf::object" => qw(contr pay_amount pay_player)],	1906	["cf::object" => qw(contr pay_amount pay_player map)],
879	["cf::object::player" => qw(player)],	1907	["cf::object::player" => qw(player)],
880	["cf::player" => qw(peaceful)],	1908	["cf::player" => qw(peaceful)],
		1909	["cf::map" => qw(trigger)],
881	) {	1910	) {
882	no strict 'refs';	1911	no strict 'refs';
883	my ($pkg, @funs) = @$_;	1912	my ($pkg, @funs) = @$_;
884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1913	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
885	for @funs;	1914	for @funs;
…		…
1001		2030
1002	{	2031	{
1003	my $path = cf::localdir . "/database.pst";	2032	my $path = cf::localdir . "/database.pst";
1004		2033
1005	sub db_load() {	2034	sub db_load() {
1006	warn "loading database $path\n";#d# remove later
1007	$DB = stat $path ? Storable::retrieve $path : { };	2035	$DB = stat $path ? Storable::retrieve $path : { };
1008	}	2036	}
1009		2037
1010	my $pid;	2038	my $pid;
1011		2039
1012	sub db_save() {	2040	sub db_save() {
1013	warn "saving database $path\n";#d# remove later
1014	waitpid $pid, 0 if $pid;	2041	waitpid $pid, 0 if $pid;
1015	if (0 == ($pid = fork)) {	2042	if (0 == ($pid = fork)) {
1016	$DB->{_meta}{version} = 1;	2043	$DB->{_meta}{version} = 1;
1017	Storable::nstore $DB, "$path~";	2044	Storable::nstore $DB, "$path~";
1018	rename "$path~", $path;	2045	rename "$path~", $path;
…		…
1025	sub db_sync() {	2052	sub db_sync() {
1026	db_save if $dirty;	2053	db_save if $dirty;
1027	undef $dirty;	2054	undef $dirty;
1028	}	2055	}
1029		2056
1030	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2057	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1031	db_sync;	2058	db_sync;
1032	});	2059	});
1033		2060
1034	sub db_dirty() {	2061	sub db_dirty() {
1035	$dirty = 1;	2062	$dirty = 1;
…		…
1049	$DB->{$_[0]} = $_[1];	2076	$DB->{$_[0]} = $_[1];
1050	}	2077	}
1051	db_dirty;	2078	db_dirty;
1052	}	2079	}
1053		2080
1054	attach_global	2081	cf::global->attach (
1055	prio => 10000,	2082	prio => 10000,
1056	on_cleanup => sub {	2083	on_cleanup => sub {
1057	db_sync;	2084	db_sync;
1058	},	2085	},
1059	;	2086	);
1060	}	2087	}
1061		2088
1062	#############################################################################	2089	#############################################################################
1063	# the server's main()	2090	# the server's main()
1064		2091
…		…
1066	open my $fh, "<:utf8", cf::confdir . "/config"	2093	open my $fh, "<:utf8", cf::confdir . "/config"
1067	or return;	2094	or return;
1068		2095
1069	local $/;	2096	local $/;
1070	*CFG = YAML::Syck::Load <$fh>;	2097	*CFG = YAML::Syck::Load <$fh>;
		2098
		2099	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2100
		2101	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2102	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2103
		2104	if (exists $CFG{mlockall}) {
		2105	eval {
		2106	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2107	and die "WARNING: m(un)lockall failed: $!\n";
		2108	};
		2109	warn $@ if $@;
		2110	}
1071	}	2111	}
1072		2112
1073	sub main {	2113	sub main {
		2114	# we must not ever block the main coroutine
		2115	local $Coro::idle = sub {
		2116	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2117	async { Event::one_event };
		2118	};
		2119
1074	cfg_load;	2120	cfg_load;
1075	db_load;	2121	db_load;
1076	load_extensions;	2122	load_extensions;
1077	Event::loop;	2123	Event::loop;
1078	}	2124	}
1079		2125
1080	#############################################################################	2126	#############################################################################
1081	# initialisation	2127	# initialisation
1082		2128
1083	sub _perl_reload(&) {	2129	sub reload() {
1084	my ($msg) = @_;	2130	# can/must only be called in main
		2131	if ($Coro::current != $Coro::main) {
		2132	warn "can only reload from main coroutine\n";
		2133	return;
		2134	}
1085		2135
1086	$msg->("reloading...");	2136	warn "reloading...";
		2137
		2138	my $guard = freeze_mainloop;
		2139	cf::emergency_save;
1087		2140
1088	eval {	2141	eval {
		2142	# if anything goes wrong in here, we should simply crash as we already saved
		2143
1089	# cancel all watchers	2144	# cancel all watchers
1090	$_->cancel for Event::all_watchers;	2145	for (Event::all_watchers) {
		2146	$_->cancel if $_->data & WF_AUTOCANCEL;
		2147	}
		2148
		2149	# cancel all extension coros
		2150	$_->cancel for values %EXT_CORO;
		2151	%EXT_CORO = ();
1091		2152
1092	# unload all extensions	2153	# unload all extensions
1093	for (@exts) {	2154	for (@exts) {
1094	$msg->("unloading <$_>");	2155	warn "unloading <$_>";
1095	unload_extension $_;	2156	unload_extension $_;
1096	}	2157	}
1097		2158
1098	# unload all modules loaded from $LIBDIR	2159	# unload all modules loaded from $LIBDIR
1099	while (my ($k, $v) = each %INC) {	2160	while (my ($k, $v) = each %INC) {
1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2161	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1101		2162
1102	$msg->("removing <$k>");	2163	warn "removing <$k>";
1103	delete $INC{$k};	2164	delete $INC{$k};
1104		2165
1105	$k =~ s/\.pm$//;	2166	$k =~ s/\.pm$//;
1106	$k =~ s/\//::/g;	2167	$k =~ s/\//::/g;
1107		2168
…		…
1112	Symbol::delete_package $k;	2173	Symbol::delete_package $k;
1113	}	2174	}
1114		2175
1115	# sync database to disk	2176	# sync database to disk
1116	cf::db_sync;	2177	cf::db_sync;
		2178	IO::AIO::flush;
1117		2179
1118	# get rid of safe::, as good as possible	2180	# get rid of safe::, as good as possible
1119	Symbol::delete_package "safe::$_"	2181	Symbol::delete_package "safe::$_"
1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2182	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1121		2183
1122	# remove register_script_function callbacks	2184	# remove register_script_function callbacks
1123	# TODO	2185	# TODO
1124		2186
1125	# unload cf.pm "a bit"	2187	# unload cf.pm "a bit"
…		…
1128	# don't, removes xs symbols, too,	2190	# don't, removes xs symbols, too,
1129	# and global variables created in xs	2191	# and global variables created in xs
1130	#Symbol::delete_package __PACKAGE__;	2192	#Symbol::delete_package __PACKAGE__;
1131		2193
1132	# reload cf.pm	2194	# reload cf.pm
1133	$msg->("reloading cf.pm");	2195	warn "reloading cf.pm";
1134	require cf;	2196	require cf;
		2197	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1135		2198
1136	# load config and database again	2199	# load config and database again
1137	cf::cfg_load;	2200	cf::cfg_load;
1138	cf::db_load;	2201	cf::db_load;
1139		2202
1140	# load extensions	2203	# load extensions
1141	$msg->("load extensions");	2204	warn "load extensions";
1142	cf::load_extensions;	2205	cf::load_extensions;
1143		2206
1144	# reattach attachments to objects	2207	# reattach attachments to objects
1145	$msg->("reattach");	2208	warn "reattach";
1146	_global_reattach;	2209	_global_reattach;
		2210	reattach $_ for values %MAP;
1147	};	2211	};
1148	$msg->($@) if $@;
1149		2212
1150	$msg->("reloaded");	2213	if ($@) {
		2214	warn $@;
		2215	warn "error while reloading, exiting.";
		2216	exit 1;
		2217	}
		2218
		2219	warn "reloaded successfully";
1151	};	2220	};
1152		2221
1153	sub perl_reload() {	2222	#############################################################################
1154	_perl_reload {
1155	warn $_[0];
1156	print "$_[0]\n";
1157	};
1158	}
1159		2223
		2224	unless ($LINK_MAP) {
		2225	$LINK_MAP = cf::map::new;
		2226
		2227	$LINK_MAP->width (41);
		2228	$LINK_MAP->height (41);
		2229	$LINK_MAP->alloc;
		2230	$LINK_MAP->path ("{link}");
		2231	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2232	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2233
		2234	# dirty hack because... archetypes are not yet loaded
		2235	Event->timer (
		2236	after => 10,
		2237	cb => sub {
		2238	$_[0]->w->cancel;
		2239
		2240	# provide some exits "home"
		2241	my $exit = cf::object::new "exit";
		2242
		2243	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2244	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2245	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2246
		2247	$LINK_MAP->insert ($exit->clone, 19, 19);
		2248	$LINK_MAP->insert ($exit->clone, 19, 20);
		2249	$LINK_MAP->insert ($exit->clone, 19, 21);
		2250	$LINK_MAP->insert ($exit->clone, 20, 19);
		2251	$LINK_MAP->insert ($exit->clone, 20, 21);
		2252	$LINK_MAP->insert ($exit->clone, 21, 19);
		2253	$LINK_MAP->insert ($exit->clone, 21, 20);
		2254	$LINK_MAP->insert ($exit->clone, 21, 21);
		2255
		2256	$exit->destroy;
		2257	});
		2258
		2259	$LINK_MAP->{deny_save} = 1;
		2260	$LINK_MAP->{deny_reset} = 1;
		2261
		2262	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2263	}
		2264
		2265	register "<global>", __PACKAGE__;
		2266
1160	register_command "perl-reload", 0, sub {	2267	register_command "reload" => sub {
1161	my ($who, $arg) = @_;	2268	my ($who, $arg) = @_;
1162		2269
1163	if ($who->flag (FLAG_WIZ)) {	2270	if ($who->flag (FLAG_WIZ)) {
1164	_perl_reload {	2271	$who->message ("start of reload.");
1165	warn $_[0];	2272	reload;
1166	$who->message ($_[0]);	2273	$who->message ("end of reload.");
1167	};
1168	}	2274	}
1169	};	2275	};
1170		2276
1171	register "<global>", __PACKAGE__;
1172
1173	unshift @INC, $LIBDIR;	2277	unshift @INC, $LIBDIR;
1174		2278
1175	$TICK_WATCHER = Event->timer (	2279	$TICK_WATCHER = Event->timer (
		2280	reentrant => 0,
1176	prio => 1,	2281	prio => 0,
1177	async => 1,
1178	at => $NEXT_TICK || 1,	2282	at => $NEXT_TICK || $TICK,
		2283	data => WF_AUTOCANCEL,
1179	cb => sub {	2284	cb => sub {
1180	cf::server_tick; # one server iteration	2285	cf::server_tick; # one server iteration
1181		2286	$RUNTIME += $TICK;
1182	my $NOW = Event::time;
1183	$NEXT_TICK += $TICK;	2287	$NEXT_TICK += $TICK;
1184		2288
1185	# if we are delayed by four ticks or more, skip them all	2289	# if we are delayed by four ticks or more, skip them all
1186	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2290	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1187		2291
1188	$TICK_WATCHER->at ($NEXT_TICK);	2292	$TICK_WATCHER->at ($NEXT_TICK);
1189	$TICK_WATCHER->start;	2293	$TICK_WATCHER->start;
1190	},	2294	},
1191	);	2295	);
1192		2296
1193	IO::AIO::max_poll_time $TICK * 0.2;	2297	IO::AIO::max_poll_time $TICK * 0.2;
1194		2298
		2299	Event->io (
1195	Event->io (fd => IO::AIO::poll_fileno,	2300	fd => IO::AIO::poll_fileno,
1196	poll => 'r',	2301	poll => 'r',
1197	prio => 5,	2302	prio => 5,
		2303	data => WF_AUTOCANCEL,
1198	cb => \&IO::AIO::poll_cb);	2304	cb => \&IO::AIO::poll_cb,
		2305	);
		2306
		2307	Event->timer (
		2308	data => WF_AUTOCANCEL,
		2309	after => 0,
		2310	interval => 10,
		2311	cb => sub {
		2312	(Coro::unblock_sub {
		2313	write_runtime
		2314	or warn "ERROR: unable to write runtime file: $!";
		2315	})->();
		2316	},
		2317	);
		2318
		2319	END { cf::emergency_save }
1199		2320
1200	1	2321	1
1201		2322

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