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Comparing cf.schmorp.de/server/lib/cf.pm (file contents):
Revision 1.70 by root, Sun Oct 1 10:55:37 2006 UTC vs.
Revision 1.146 by root, Sun Jan 7 23:10:43 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~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
112	=back	332	=back
113		333
		334	=cut
		335
114	#############################################################################	336	#############################################################################
115		337
116	=head2 EVENTS AND OBJECT ATTACHMENTS	338	package cf::path;
		339
		340	sub new {
		341	my ($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+).
117		467
118	=over 4	468	=over 4
119		469
120	=item $object->attach ($attachment, key => $value...)
121
122	=item $object->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to an object.
125
126	=item $player->attach ($attachment, key => $value...)
127
128	=item $player->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to a player.
131
132	=item $map->attach ($attachment, key => $value...)	470	=item $attachable->attach ($attachment, key => $value...)
133		471
134	=item $map->detach ($attachment)	472	=item $attachable->detach ($attachment)
135		473
136	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.
137		476
138	=item $bool = $object->attached ($name)	477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
139		479
140	=item $bool = $player->attached ($name)	480	$obj->attach (minesweeper => width => 10, height => 10);
141		481
142	=item $bool = $map->attached ($name)	482	=item $bool = $attachable->attached ($name)
143		483
144	Checks wether the named attachment is currently attached to the object.	484	Checks wether the named attachment is currently attached to the object.
145		485
146	=item cf::attach_global ...	486	=item cf::CLASS->attach ...
147		487
148	Attach handlers for global events.	488	=item cf::CLASS->detach ...
149		489
150	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
151	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:
152		524
153	=over 4	525	=over 4
154		526
155	=item prio => $number	527	=item prio => $number
156		528
…		…
158	by another C<prio> setting). Lower priority handlers get executed	530	by another C<prio> setting). Lower priority handlers get executed
159	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
160	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
161	unless you know what you are doing.	533	unless you know what you are doing.
162		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
163	=item on_I<event> => \&cb	541	=item on_I<event> => \&cb
164		542
165	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
166	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
167	handlers are recognised generally depends on the type of object these	545	handlers are recognised generally depends on the type of object these
…		…
176	package and register them. Only handlers for eevents supported by the	554	package and register them. Only handlers for eevents supported by the
177	object/class are recognised.	555	object/class are recognised.
178		556
179	=back	557	=back
180		558
181	=item cf::attach_to_type $object_type, $subtype, ...	559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
182		561
183	Attach handlers for a specific object type (e.g. TRANSPORT) and	562	cf::object::attachment sockpuppet =>
184	subtype. If C<$subtype> is zero or undef, matches all objects of the given	563	on_skill_attack => sub {
185	type.	564	my ($self, $victim) = @_;
186		565	...
187	=item cf::attach_to_objects ...
188
189	Attach handlers to all objects. Do not use this except for debugging or
190	very rare events, as handlers are (obviously) called for I<all> objects in
191	the game.
192
193	=item cf::attach_to_players ...
194
195	Attach handlers to all players.
196
197	=item cf::attach_to_maps ...
198
199	Attach handlers to all maps.
200
201	=item cf:register_attachment $name, ...
202
203	Register an attachment by name through which objects can refer to this
204	attachment.
205
206	=item cf:register_player_attachment $name, ...
207
208	Register an attachment by name through which players can refer to this
209	attachment.
210
211	=item cf:register_map_attachment $name, ...
212
213	Register an attachment by name through which maps can refer to this
214	attachment.
215
216	=cut
217
218	# the following variables are defined in .xs and must not be re-created
219	our @CB_GLOBAL = (); # registry for all global events
220	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
221	our @CB_PLAYER = ();
222	our @CB_TYPE = (); # registry for type (cf-object class) based events
223	our @CB_MAP = ();
224
225	my %attachment;
226
227	sub _attach_cb($\%$$$) {
228	my ($registry, $undo, $event, $prio, $cb) = @_;
229
230	use sort 'stable';
231
232	$cb = [$prio, $cb];
233
234	@{$registry->[$event]} = sort
235	{ $a->[0] cmp $b->[0] }
236	@{$registry->[$event] || []}, $cb;
237
238	push @{$undo->{cb}}, [$event, $cb];
239	}
240
241	# attach handles attaching event callbacks
242	# the only thing the caller has to do is pass the correct
243	# registry (== where the callback attaches to).
244	sub _attach(\@$@) {
245	my ($registry, $klass, @arg) = @_;
246
247	my $prio = 0;
248
249	my %undo = (
250	registry => $registry,
251	cb => [],
252	);
253
254	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
255
256	while (@arg) {
257	my $type = shift @arg;
258
259	if ($type eq "prio") {
260	$prio = shift @arg;
261
262	} elsif ($type eq "package") {
263	my $pkg = shift @arg;
264
265	while (my ($name, $id) = each %cb_id) {
266	if (my $cb = $pkg->can ($name)) {
267	_attach_cb $registry, %undo, $id, $prio, $cb;
268	}
269	}	566	}
270
271	} elsif (exists $cb_id{$type}) {
272	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
273
274	} elsif (ref $type) {
275	warn "attaching objects not supported, ignoring.\n";
276
277	} else {
278	shift @arg;
279	warn "attach argument '$type' not supported, ignoring.\n";
280	}
281	}
282
283	\%undo
284	}
285
286	sub _attach_attachment {
287	my ($obj, $name, %arg) = @_;
288
289	return if exists $obj->{_attachment}{$name};
290
291	my $res;
292
293	if (my $attach = $attachment{$name}) {
294	my $registry = $obj->registry;
295
296	for (@$attach) {
297	my ($klass, @attach) = @$_;
298	$res = _attach @$registry, $klass, @attach;
299	}
300
301	$obj->{$name} = \%arg;
302	} else {
303	warn "object uses attachment '$name' that is not available, postponing.\n";
304	}
305
306	$obj->{_attachment}{$name} = undef;
307
308	$res->{attachment} = $name;
309	$res
310	}
311
312	*cf::object::attach =
313	*cf::player::attach =
314	*cf::map::attach = sub {
315	my ($obj, $name, %arg) = @_;
316
317	_attach_attachment $obj, $name, %arg;
318	};
319
320	# all those should be optimised
321	*cf::object::detach =
322	*cf::player::detach =
323	*cf::map::detach = sub {
324	my ($obj, $name) = @_;
325
326	delete $obj->{_attachment}{$name};
327	reattach ($obj);
328	};
329
330	*cf::object::attached =
331	*cf::player::attached =
332	*cf::map::attached = sub {
333	my ($obj, $name) = @_;
334
335	exists $obj->{_attachment}{$name}
336	};
337
338	sub attach_global {
339	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
340	}
341
342	sub attach_to_type {
343	my $type = shift;
344	my $subtype = shift;
345
346	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
347	}
348
349	sub attach_to_objects {
350	_attach @CB_OBJECT, KLASS_OBJECT, @_
351	}
352
353	sub attach_to_players {
354	_attach @CB_PLAYER, KLASS_PLAYER, @_
355	}
356
357	sub attach_to_maps {
358	_attach @CB_MAP, KLASS_MAP, @_
359	}
360
361	sub register_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_OBJECT, @_]];
365	}
366
367	sub register_player_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_PLAYER, @_]];
371	}
372
373	sub register_map_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_MAP, @_]];
377	}
378
379	our $override;
380	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
381
382	sub override {
383	$override = 1;
384	@invoke_results = ();
385	}
386
387	sub do_invoke {
388	my $event = shift;
389	my $callbacks = shift;
390
391	@invoke_results = ();
392
393	local $override;
394
395	for (@$callbacks) {
396	eval { &{$_->[1]} };
397
398	if ($@) {
399	warn "$@";
400	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
401	override;
402	}
403
404	return 1 if $override;
405	}
406
407	0	567	}
408	}
409		568
410	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	569	=item $attachable->valid
411
412	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
413
414	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
415
416	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
417
418	Generate a global/object/player/map-specific event with the given arguments.
419
420	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
421	removed in future versions), and there is no public API to access override
422	results (if you must, access C<@cf::invoke_results> directly).
423
424	=back
425
426	#############################################################################
427
428	=head2 METHODS VALID FOR ALL CORE OBJECTS
429
430	=over 4
431
432	=item $object->valid, $player->valid, $map->valid
433		570
434	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
435	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
436	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
437	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
438	exception.	575	exception.
439		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
440	=back	760	=back
441		761
442	=cut	762	=cut
443
444	*cf::object::valid =
445	*cf::player::valid =
446	*cf::map::valid = \&cf::_valid;
447		763
448	#############################################################################	764	#############################################################################
449	# object support	765	# object support
450		766
451	sub instantiate {
452	my ($obj, $data) = @_;
453
454	$data = from_json $data;
455
456	for (@$data) {
457	my ($name, $args) = @$_;
458
459	$obj->attach ($name, %{$args || {} });
460	}
461	}
462
463	# basically do the same as instantiate, without calling instantiate
464	sub reattach {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
465	my ($obj) = @_;	769	my ($obj) = @_;
		770
466	my $registry = $obj->registry;	771	my $registry = $obj->registry;
467		772
468	@$registry = ();	773	@$registry = ();
469		774
470	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
471		776
472	for my $name (keys %{ $obj->{_attachment} || {} }) {	777	for my $name (keys %{ $obj->{_attachment} || {} }) {
473	if (my $attach = $attachment{$name}) {	778	if (my $attach = $attachment{$name}) {
474	for (@$attach) {	779	for (@$attach) {
475	my ($klass, @attach) = @$_;	780	my ($klass, @attach) = @$_;
476	_attach @$registry, $klass, @attach;	781	_attach $registry, $klass, @attach;
477	}	782	}
478	} else {	783	} else {
479	warn "object uses attachment '$name' that is not available, postponing.\n";	784	warn "object uses attachment '$name' that is not available, postponing.\n";
480	}	785	}
481	}	786	}
482	}	787	}
483		788
484	sub object_freezer_save {	789	cf::attachable->attach (
485	my ($filename, $rdata, $objs) = @_;
486
487	if (length $$rdata) {
488	warn sprintf "saving %s (%d,%d)\n",
489	$filename, length $$rdata, scalar @$objs;
490
491	if (open my $fh, ">:raw", "$filename~") {
492	chmod SAVE_MODE, $fh;
493	syswrite $fh, $$rdata;
494	close $fh;
495
496	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
497	chmod SAVE_MODE, $fh;
498	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
499	close $fh;
500	rename "$filename.pst~", "$filename.pst";
501	} else {
502	unlink "$filename.pst";
503	}
504
505	rename "$filename~", $filename;
506	} else {
507	warn "FATAL: $filename~: $!\n";
508	}
509	} else {
510	unlink $filename;
511	unlink "$filename.pst";
512	}
513	}
514
515	sub object_thawer_load {
516	my ($filename) = @_;
517
518	local $/;
519
520	my $av;
521
522	#TODO: use sysread etc.
523	if (open my $data, "<:raw:perlio", $filename) {
524	$data = <$data>;
525	if (open my $pst, "<:raw:perlio", "$filename.pst") {
526	$av = eval { (Storable::thaw <$pst>)->{objs} };
527	}
528	return ($data, $av);
529	}
530
531	()
532	}
533
534	attach_to_objects
535	prio => -1000000,	790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
536	on_clone => sub {	803	on_clone => sub {
537	my ($src, $dst) = @_;	804	my ($src, $dst) = @_;
538		805
539	@{$dst->registry} = @{$src->registry};	806	@{$dst->registry} = @{$src->registry};
540		807
541	%$dst = %$src;	808	%$dst = %$src;
542		809
543	%{$dst->{_attachment}} = %{$src->{_attachment}}	810	%{$dst->{_attachment}} = %{$src->{_attachment}}
544	if exists $src->{_attachment};	811	if exists $src->{_attachment};
545	},	812	},
546	;	813	);
		814
		815	sub object_freezer_save {
		816	my ($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	}
547		879
548	#############################################################################	880	#############################################################################
549	# old plug-in events	881	# command handling &c
550		882
551	sub inject_event {	883	=item cf::register_command $name => \&callback($ob,$args);
552	my $extension = shift;
553	my $event_code = shift;
554		884
555	my $cb = $hook[$event_code]{$extension}	885	Register a callback for execution when the client sends the user command
556	or return;	886	$name.
557		887
558	&$cb	888	=cut
559	}
560
561	sub inject_global_event {
562	my $event = shift;
563
564	my $cb = $hook[$event]
565	or return;
566
567	List::Util::max map &$_, values %$cb
568	}
569
570	sub inject_command {
571	my ($name, $obj, $params) = @_;
572
573	for my $cmd (@{ $command{$name} }) {
574	$cmd->[1]->($obj, $params);
575	}
576
577	-1
578	}
579		889
580	sub register_command {	890	sub register_command {
581	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
582		892
583	my $caller = caller;	893	my $caller = caller;
584	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
585		895
586	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
587	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
588	}	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
589		907
590	sub register_extcmd {	908	sub register_extcmd {
591	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
592		910
593	my $caller = caller;	911	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
595		913
596	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
597	}	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	);
598		948
599	sub register {	949	sub register {
600	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
601		951
602	#TODO	952	#TODO
…		…
621	. "#line 1 \"$path\"\n{\n"	971	. "#line 1 \"$path\"\n{\n"
622	. (do { local $/; <$fh> })	972	. (do { local $/; <$fh> })
623	. "\n};\n1";	973	. "\n};\n1";
624		974
625	eval $source	975	eval $source
626	or die "$path: $@";	976	or die $@ ? "$path: $@\n"
		977	: "extension disabled.\n";
627		978
628	push @exts, $pkg;	979	push @exts, $pkg;
629	$ext_pkg{$base} = $pkg;	980	$ext_pkg{$base} = $pkg;
630		981
631	# no strict 'refs';	982	# no strict 'refs';
…		…
644	# for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
645	# delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
646	# }	997	# }
647		998
648	# remove commands	999	# remove commands
649	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
650	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
651		1002
652	if (@cb) {	1003	if (@cb) {
653	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
654	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
655	} else {	1005	} else {
656	delete $command{$name};
657	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
658	}	1007	}
659	}	1008	}
660		1009
661	# remove extcmds	1010	# remove extcmds
662	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
663	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
664	}	1013	}
665		1014
666	if (my $cb = $pkg->can ("unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
667	eval {	1016	eval {
668	$cb->($pkg);	1017	$cb->($pkg);
…		…
672		1021
673	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
674	}	1023	}
675		1024
676	sub load_extensions {	1025	sub load_extensions {
677	my $LIBDIR = maps_directory "perl";
678
679	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
680	next unless -r $ext;	1027	next unless -r $ext;
681	eval {	1028	eval {
682	load_extension $ext;	1029	load_extension $ext;
683	1	1030	1
684	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
685	}	1032	}
686	}	1033	}
687		1034
688	#############################################################################	1035	#############################################################################
689	# extcmd framework, basically convert ext <msg>
690	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
691
692	attach_to_players
693	on_extcmd => sub {
694	my ($pl, $buf) = @_;
695
696	my $msg = eval { from_json $buf };
697
698	if (ref $msg) {
699	if (my $cb = $extcmd{$msg->{msgtype}}) {
700	if (my %reply = $cb->[0]->($pl, $msg)) {
701	$pl->ext_reply ($msg->{msgid}, %reply);
702	}
703	}
704	} else {
705	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
706	}
707
708	cf::override;
709	},
710	;
711
712	#############################################################################
713	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
714		1037
715	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
716	my ($map) = @_;	1039	my ($map) = @_;
717		1040
…		…
719	defined $path or return;	1042	defined $path or return;
720		1043
721	unlink "$path.pst";	1044	unlink "$path.pst";
722	};	1045	};
723		1046
724	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
725		1048
726	#############################################################################	1049	#############################################################################
727	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
728		1051
729	sub all_objects(@) {	1052	sub all_objects(@) {
730	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
731	}	1054	}
732		1055
733	# TODO: compatibility cruft, remove when no longer needed	1056	# TODO: compatibility cruft, remove when no longer needed
734	attach_to_players	1057	cf::player->attach (
735	on_load => sub {	1058	on_load => sub {
736	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
737		1060
738	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
741		1064
742	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
743	}	1066	}
744	}	1067	}
745	},	1068	},
746	;	1069	);
747		1070
748	#############################################################################	1071	#############################################################################
749		1072
750	=head2 CORE EXTENSIONS	1073	=head2 CORE EXTENSIONS
751		1074
752	Functions and methods that extend core crossfire objects.	1075	Functions and methods that extend core crossfire objects.
753		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
754	=over 4	1083	=over 4
755		1084
756	=item cf::player::exists $login	1085	=item cf::player::find $login
757		1086
758	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
759		1088
760	=cut	1089	=cut
761		1090
762	sub cf::player::exists($) {	1091	sub playerdir($) {
763	cf::player::find $_[0]	1092	cf::localdir
764	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])
765	}	1097	}
766		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	IO::AIO::aio_mkdir playerdir $pl, 0770;
		1139	$pl->{last_save} = $cf::RUNTIME;
		1140
		1141	Coro::cede;
		1142	$pl->save_pl ($path);
		1143	Coro::cede;
		1144	}
		1145
		1146	sub new($) {
		1147	my ($login) = @_;
		1148
		1149	my $self = create;
		1150
		1151	$self->ob->name ($login);
		1152	$self->{deny_save} = 1;
		1153
		1154	$cf::PLAYER{$login} = $self;
		1155
		1156	$self
		1157	}
		1158
		1159	sub quit_character {
		1160	my ($pl) = @_;
		1161
		1162	$pl->{deny_save} = 1;
		1163	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1164
		1165	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1166	$pl->deactivate;
		1167	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1168	$pl->ns->destroy if $pl->ns;
		1169
		1170	my $path = playerdir $pl;
		1171	my $temp = "$path~$cf::RUNTIME~deleting~";
		1172	IO::AIO::aio_rename $path, $temp, sub {
		1173	delete $cf::PLAYER{$pl->ob->name};
		1174	$pl->destroy;
		1175
		1176	IO::AIO::aio_rmtree $temp;
		1177	};
		1178	}
		1179
		1180	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1181
		1182	Sends an ext reply to the player.
		1183
		1184	=cut
		1185
		1186	sub ext_reply($$$%) {
		1187	my ($self, $id, %msg) = @_;
		1188
		1189	$msg{msgid} = $id;
		1190
		1191	$self->send ("ext " . cf::to_json \%msg);
		1192	}
		1193
		1194	package cf;
		1195
		1196	=back
		1197
		1198
		1199	=head3 cf::map
		1200
		1201	=over 4
		1202
		1203	=cut
		1204
		1205	package cf::map;
		1206
		1207	use Fcntl;
		1208	use Coro::AIO;
		1209
		1210	our $MAX_RESET = 3600;
		1211	our $DEFAULT_RESET = 3000;
		1212
		1213	sub generate_random_map {
		1214	my ($path, $rmp) = @_;
		1215
		1216	# mit "rum" bekleckern, nicht
		1217	cf::map::_create_random_map
		1218	$path,
		1219	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1220	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1221	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1222	$rmp->{exit_on_final_map},
		1223	$rmp->{xsize}, $rmp->{ysize},
		1224	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1225	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1226	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1227	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1228	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1229	(cf::region::find $rmp->{region})
		1230	}
		1231
		1232	# and all this just because we cannot iterate over
		1233	# all maps in C++...
		1234	sub change_all_map_light {
		1235	my ($change) = @_;
		1236
		1237	$_->change_map_light ($change)
		1238	for grep $_->outdoor, values %cf::MAP;
		1239	}
		1240
		1241	sub try_load_header($) {
		1242	my ($path) = @_;
		1243
		1244	utf8::encode $path;
		1245	aio_open $path, O_RDONLY, 0
		1246	or return;
		1247
		1248	my $map = cf::map::new
		1249	or return;
		1250
		1251	# for better error messages only, will be overwritten
		1252	$map->path ($path);
		1253
		1254	$map->load_header ($path)
		1255	or return;
		1256
		1257	$map->{load_path} = $path;
		1258
		1259	$map
		1260	}
		1261
		1262	sub find;
		1263	sub find {
		1264	my ($path, $origin) = @_;
		1265
		1266	#warn "find<$path,$origin>\n";#d#
		1267
		1268	$path = new cf::path $path, $origin && $origin->path;
		1269	my $key = $path->as_string;
		1270
		1271	cf::lock_wait "map_find:$key";
		1272
		1273	$cf::MAP{$key} || do {
		1274	my $guard = cf::lock_acquire "map_find:$key";
		1275
		1276	# do it the slow way
		1277	my $map = try_load_header $path->save_path;
		1278
		1279	Coro::cede;
		1280
		1281	if ($map) {
		1282	$map->last_access ((delete $map->{last_access})
		1283	|| $cf::RUNTIME); #d#
		1284	# safety
		1285	$map->{instantiate_time} = $cf::RUNTIME
		1286	if $map->{instantiate_time} > $cf::RUNTIME;
		1287	} else {
		1288	if (my $rmp = $path->random_map_params) {
		1289	$map = generate_random_map $key, $rmp;
		1290	} else {
		1291	$map = try_load_header $path->load_path;
		1292	}
		1293
		1294	$map or return;
		1295
		1296	$map->{load_original} = 1;
		1297	$map->{instantiate_time} = $cf::RUNTIME;
		1298	$map->last_access ($cf::RUNTIME);
		1299	$map->instantiate;
		1300
		1301	# per-player maps become, after loading, normal maps
		1302	$map->per_player (0) if $path->{user_rel};
		1303	}
		1304
		1305	$map->path ($key);
		1306	$map->{path} = $path;
		1307	$map->{last_save} = $cf::RUNTIME;
		1308
		1309	Coro::cede;
		1310
		1311	if ($map->should_reset) {
		1312	$map->reset;
		1313	undef $guard;
		1314	$map = find $path
		1315	or return;
		1316	}
		1317
		1318	$cf::MAP{$key} = $map
		1319	}
		1320	}
		1321
		1322	sub load {
		1323	my ($self) = @_;
		1324
		1325	my $path = $self->{path};
		1326	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1327
		1328	return if $self->in_memory != cf::MAP_SWAPPED;
		1329
		1330	$self->in_memory (cf::MAP_LOADING);
		1331
		1332	$self->alloc;
		1333	$self->load_objects ($self->{load_path}, 1)
		1334	or return;
		1335
		1336	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1337	if delete $self->{load_original};
		1338
		1339	if (my $uniq = $path->uniq_path) {
		1340	utf8::encode $uniq;
		1341	if (aio_open $uniq, O_RDONLY, 0) {
		1342	$self->clear_unique_items;
		1343	$self->load_objects ($uniq, 0);
		1344	}
		1345	}
		1346
		1347	Coro::cede;
		1348
		1349	# now do the right thing for maps
		1350	$self->link_multipart_objects;
		1351
		1352	if ($self->{path}->is_style_map) {
		1353	$self->{deny_save} = 1;
		1354	$self->{deny_reset} = 1;
		1355	} else {
		1356	$self->fix_auto_apply;
		1357	$self->decay_objects;
		1358	$self->update_buttons;
		1359	$self->set_darkness_map;
		1360	$self->difficulty ($self->estimate_difficulty)
		1361	unless $self->difficulty;
		1362	$self->activate;
		1363	}
		1364
		1365	Coro::cede;
		1366
		1367	$self->in_memory (cf::MAP_IN_MEMORY);
		1368	}
		1369
		1370	sub find_sync {
		1371	my ($path, $origin) = @_;
		1372
		1373	cf::sync_job { cf::map::find $path, $origin }
		1374	}
		1375
		1376	sub do_load_sync {
		1377	my ($map) = @_;
		1378
		1379	cf::sync_job { $map->load };
		1380	}
		1381
		1382	sub save {
		1383	my ($self) = @_;
		1384
		1385	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1386
		1387	$self->{last_save} = $cf::RUNTIME;
		1388
		1389	return unless $self->dirty;
		1390
		1391	my $save = $self->{path}->save_path; utf8::encode $save;
		1392	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1393
		1394	$self->{load_path} = $save;
		1395
		1396	return if $self->{deny_save};
		1397
		1398	local $self->{last_access} = $self->last_access;#d#
		1399
		1400	cf::async {
		1401	$_->contr->save for $self->players;
		1402	};
		1403
		1404	if ($uniq) {
		1405	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1406	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1407	} else {
		1408	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1409	}
		1410	}
		1411
		1412	sub swap_out {
		1413	my ($self) = @_;
		1414
		1415	# save first because save cedes
		1416	$self->save;
		1417
		1418	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1419
		1420	return if $self->players;
		1421	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1422	return if $self->{deny_save};
		1423
		1424	$self->clear;
		1425	$self->in_memory (cf::MAP_SWAPPED);
		1426	}
		1427
		1428	sub reset_at {
		1429	my ($self) = @_;
		1430
		1431	# TODO: safety, remove and allow resettable per-player maps
		1432	return 1e99 if $self->{path}{user_rel};
		1433	return 1e99 if $self->{deny_reset};
		1434
		1435	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1436	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1437
		1438	$time + $to
		1439	}
		1440
		1441	sub should_reset {
		1442	my ($self) = @_;
		1443
		1444	$self->reset_at <= $cf::RUNTIME
		1445	}
		1446
		1447	sub unlink_save {
		1448	my ($self) = @_;
		1449
		1450	utf8::encode (my $save = $self->{path}->save_path);
		1451	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1452	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1453	}
		1454
		1455	sub rename {
		1456	my ($self, $new_path) = @_;
		1457
		1458	$self->unlink_save;
		1459
		1460	delete $cf::MAP{$self->path};
		1461	$self->{path} = new cf::path $new_path;
		1462	$self->path ($self->{path}->as_string);
		1463	$cf::MAP{$self->path} = $self;
		1464
		1465	$self->save;
		1466	}
		1467
		1468	sub reset {
		1469	my ($self) = @_;
		1470
		1471	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1472
		1473	return if $self->players;
		1474	return if $self->{path}{user_rel};#d#
		1475
		1476	warn "resetting map ", $self->path;#d#
		1477
		1478	delete $cf::MAP{$self->path};
		1479
		1480	$_->clear_links_to ($self) for values %cf::MAP;
		1481
		1482	$self->unlink_save;
		1483	$self->destroy;
		1484	}
		1485
		1486	my $nuke_counter = "aaaa";
		1487
		1488	sub nuke {
		1489	my ($self) = @_;
		1490
		1491	$self->{deny_save} = 1;
		1492	$self->reset_timeout (1);
		1493	$self->rename ("{nuke}/" . ($nuke_counter++));
		1494	$self->reset; # polite request, might not happen
		1495	}
		1496
		1497	sub customise_for {
		1498	my ($map, $ob) = @_;
		1499
		1500	if ($map->per_player) {
		1501	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1502	}
		1503
		1504	$map
		1505	}
		1506
		1507	sub emergency_save {
		1508	my $freeze_guard = cf::freeze_mainloop;
		1509
		1510	warn "enter emergency perl save\n";
		1511
		1512	cf::sync_job {
		1513	warn "begin emergency player save\n";
		1514	$_->save for values %cf::PLAYER;
		1515	warn "end emergency player save\n";
		1516
		1517	warn "begin emergency map save\n";
		1518	$_->save for values %cf::MAP;
		1519	warn "end emergency map save\n";
		1520	};
		1521
		1522	warn "leave emergency perl save\n";
		1523	}
		1524
		1525	package cf;
		1526
		1527	=back
		1528
		1529
		1530	=head3 cf::object::player
		1531
		1532	=over 4
		1533
767	=item $player->reply ($npc, $msg[, $flags])	1534	=item $player_object->reply ($npc, $msg[, $flags])
768		1535
769	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1536	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
770	can be C<undef>. Does the right thing when the player is currently in a	1537	can be C<undef>. Does the right thing when the player is currently in a
771	dialogue with the given NPC character.	1538	dialogue with the given NPC character.
772		1539
773	=cut	1540	=cut
774		1541
775	# rough implementation of a future "reply" method that works	1542	# rough implementation of a future "reply" method that works
776	# with dialog boxes.	1543	# with dialog boxes.
		1544	#TODO: the first argument must go, split into a $npc->reply_to ( method
777	sub cf::object::player::reply($$$;$) {	1545	sub cf::object::player::reply($$$;$) {
778	my ($self, $npc, $msg, $flags) = @_;	1546	my ($self, $npc, $msg, $flags) = @_;
779		1547
780	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1548	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
781		1549
…		…
785	$msg = $npc->name . " says: $msg" if $npc;	1553	$msg = $npc->name . " says: $msg" if $npc;
786	$self->message ($msg, $flags);	1554	$self->message ($msg, $flags);
787	}	1555	}
788	}	1556	}
789		1557
790	=item $player->ext_reply ($msgid, $msgtype, %msg)	1558	=item $player_object->may ("access")
791		1559
792	Sends an ext reply to the player.	1560	Returns wether the given player is authorized to access resource "access"
		1561	(e.g. "command_wizcast").
793		1562
794	=cut	1563	=cut
795		1564
796	sub cf::player::ext_reply($$$%) {	1565	sub cf::object::player::may {
		1566	my ($self, $access) = @_;
		1567
		1568	$self->flag (cf::FLAG_WIZ) ||
		1569	(ref $cf::CFG{"may_$access"}
		1570	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1571	: $cf::CFG{"may_$access"})
		1572	}
		1573
		1574	=item $player_object->enter_link
		1575
		1576	Freezes the player and moves him/her to a special map (C<{link}>).
		1577
		1578	The player should be reaosnably safe there for short amounts of time. You
		1579	I<MUST> call C<leave_link> as soon as possible, though.
		1580
		1581	=item $player_object->leave_link ($map, $x, $y)
		1582
		1583	Moves the player out of the specila link map onto the given map. If the
		1584	map is not valid (or omitted), the player will be moved back to the
		1585	location he/she was before the call to C<enter_link>, or, if that fails,
		1586	to the emergency map position.
		1587
		1588	Might block.
		1589
		1590	=cut
		1591
		1592	sub cf::object::player::enter_link {
		1593	my ($self) = @_;
		1594
		1595	$self->deactivate_recursive;
		1596
		1597	return if $self->map == $LINK_MAP;
		1598
		1599	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1600	if $self->map;
		1601
		1602	$self->enter_map ($LINK_MAP, 20, 20);
		1603	}
		1604
		1605	sub cf::object::player::leave_link {
		1606	my ($self, $map, $x, $y) = @_;
		1607
		1608	my $link_pos = delete $self->{_link_pos};
		1609
		1610	unless ($map) {
		1611	# restore original map position
		1612	($map, $x, $y) = @{ $link_pos || [] };
		1613	$map = cf::map::find $map;
		1614
		1615	unless ($map) {
		1616	($map, $x, $y) = @$EMERGENCY_POSITION;
		1617	$map = cf::map::find $map
		1618	or die "FATAL: cannot load emergency map\n";
		1619	}
		1620	}
		1621
		1622	($x, $y) = (-1, -1)
		1623	unless (defined $x) && (defined $y);
		1624
		1625	# use -1 or undef as default coordinates, not 0, 0
		1626	($x, $y) = ($map->enter_x, $map->enter_y)
		1627	if $x <=0 && $y <= 0;
		1628
		1629	$map->load;
		1630
		1631	return unless $self->contr->active;
		1632	$self->activate_recursive;
		1633	$self->enter_map ($map, $x, $y);
		1634	}
		1635
		1636	cf::player->attach (
		1637	on_logout => sub {
		1638	my ($pl) = @_;
		1639
		1640	# abort map switching before logout
		1641	if ($pl->ob->{_link_pos}) {
		1642	cf::sync_job {
		1643	$pl->ob->leave_link
		1644	};
		1645	}
		1646	},
		1647	on_login => sub {
		1648	my ($pl) = @_;
		1649
		1650	# try to abort aborted map switching on player login :)
		1651	# should happen only on crashes
		1652	if ($pl->ob->{_link_pos}) {
		1653	$pl->ob->enter_link;
		1654	(async {
		1655	# we need this sleep as the login has a concurrent enter_exit running
		1656	# and this sleep increases chances of the player not ending up in scorn
		1657	$pl->ob->reply (undef,
		1658	"There was an internal problem at your last logout, "
		1659	. "the server will try to bring you to your intended destination in a second.",
		1660	cf::NDI_RED);
		1661	Coro::Timer::sleep 1;
		1662	$pl->ob->leave_link;
		1663	})->prio (2);
		1664	}
		1665	},
		1666	);
		1667
		1668	=item $player_object->goto ($path, $x, $y)
		1669
		1670	=cut
		1671
		1672	sub cf::object::player::goto {
		1673	my ($self, $path, $x, $y) = @_;
		1674
		1675	$self->enter_link;
		1676
		1677	(async {
		1678	$path = new cf::path $path;
		1679
		1680	my $map = cf::map::find $path->as_string;
		1681	$map = $map->customise_for ($self) if $map;
		1682
		1683	# warn "entering ", $map->path, " at ($x, $y)\n"
		1684	# if $map;
		1685
		1686	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1687
		1688	$self->leave_link ($map, $x, $y);
		1689	})->prio (1);
		1690	}
		1691
		1692	=item $player_object->enter_exit ($exit_object)
		1693
		1694	=cut
		1695
		1696	sub parse_random_map_params {
		1697	my ($spec) = @_;
		1698
		1699	my $rmp = { # defaults
		1700	xsize => 10,
		1701	ysize => 10,
		1702	};
		1703
		1704	for (split /\n/, $spec) {
		1705	my ($k, $v) = split /\s+/, $_, 2;
		1706
		1707	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1708	}
		1709
		1710	$rmp
		1711	}
		1712
		1713	sub prepare_random_map {
		1714	my ($exit) = @_;
		1715
		1716	# all this does is basically replace the /! path by
		1717	# a new random map path (?random/...) with a seed
		1718	# that depends on the exit object
		1719
		1720	my $rmp = parse_random_map_params $exit->msg;
		1721
		1722	if ($exit->map) {
		1723	$rmp->{region} = $exit->map->region_name;
		1724	$rmp->{origin_map} = $exit->map->path;
		1725	$rmp->{origin_x} = $exit->x;
		1726	$rmp->{origin_y} = $exit->y;
		1727	}
		1728
		1729	$rmp->{random_seed} ||= $exit->random_seed;
		1730
		1731	my $data = cf::to_json $rmp;
		1732	my $md5 = Digest::MD5::md5_hex $data;
		1733
		1734	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1735	aio_write $fh, 0, (length $data), $data, 0;
		1736
		1737	$exit->slaying ("?random/$md5");
		1738	$exit->msg (undef);
		1739	}
		1740	}
		1741
		1742	sub cf::object::player::enter_exit {
797	my ($self, $id, %msg) = @_;	1743	my ($self, $exit) = @_;
798		1744
799	$msg{msgid} = $id;	1745	return unless $self->type == cf::PLAYER;
800		1746
801	$self->send ("ext " . to_json \%msg);	1747	$self->enter_link;
		1748
		1749	(async {
		1750	$self->deactivate_recursive; # just to be sure
		1751	unless (eval {
		1752	prepare_random_map $exit
		1753	if $exit->slaying eq "/!";
		1754
		1755	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1756	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1757
		1758	1;
		1759	}) {
		1760	$self->message ("Something went wrong deep within the crossfire server. "
		1761	. "I'll try to bring you back to the map you were before. "
		1762	. "Please report this to the dungeon master",
		1763	cf::NDI_UNIQUE | cf::NDI_RED);
		1764
		1765	warn "ERROR in enter_exit: $@";
		1766	$self->leave_link;
		1767	}
		1768	})->prio (1);
802	}	1769	}
		1770
		1771	=head3 cf::client
		1772
		1773	=over 4
		1774
		1775	=item $client->send_drawinfo ($text, $flags)
		1776
		1777	Sends a drawinfo packet to the client. Circumvents output buffering so
		1778	should not be used under normal circumstances.
		1779
		1780	=cut
		1781
		1782	sub cf::client::send_drawinfo {
		1783	my ($self, $text, $flags) = @_;
		1784
		1785	utf8::encode $text;
		1786	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1787	}
		1788
		1789
		1790	=item $success = $client->query ($flags, "text", \&cb)
		1791
		1792	Queues a query to the client, calling the given callback with
		1793	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1794	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1795
		1796	Queries can fail, so check the return code. Or don't, as queries will become
		1797	reliable at some point in the future.
		1798
		1799	=cut
		1800
		1801	sub cf::client::query {
		1802	my ($self, $flags, $text, $cb) = @_;
		1803
		1804	return unless $self->state == ST_PLAYING
		1805	|| $self->state == ST_SETUP
		1806	|| $self->state == ST_CUSTOM;
		1807
		1808	$self->state (ST_CUSTOM);
		1809
		1810	utf8::encode $text;
		1811	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1812
		1813	$self->send_packet ($self->{query_queue}[0][0])
		1814	if @{ $self->{query_queue} } == 1;
		1815	}
		1816
		1817	cf::client->attach (
		1818	on_reply => sub {
		1819	my ($ns, $msg) = @_;
		1820
		1821	# this weird shuffling is so that direct followup queries
		1822	# get handled first
		1823	my $queue = delete $ns->{query_queue}
		1824	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1825
		1826	(shift @$queue)->[1]->($msg);
		1827
		1828	push @{ $ns->{query_queue} }, @$queue;
		1829
		1830	if (@{ $ns->{query_queue} } == @$queue) {
		1831	if (@$queue) {
		1832	$ns->send_packet ($ns->{query_queue}[0][0]);
		1833	} else {
		1834	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1835	}
		1836	}
		1837	},
		1838	);
		1839
		1840	=item $client->async (\&cb)
		1841
		1842	Create a new coroutine, running the specified callback. The coroutine will
		1843	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1844	or loss of connection).
		1845
		1846	=cut
		1847
		1848	sub cf::client::async {
		1849	my ($self, $cb) = @_;
		1850
		1851	my $coro = &Coro::async ($cb);
		1852
		1853	$coro->on_destroy (sub {
		1854	delete $self->{_coro}{$coro+0};
		1855	});
		1856
		1857	$self->{_coro}{$coro+0} = $coro;
		1858
		1859	$coro
		1860	}
		1861
		1862	cf::client->attach (
		1863	on_destroy => sub {
		1864	my ($ns) = @_;
		1865
		1866	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1867	},
		1868	);
803		1869
804	=back	1870	=back
805		1871
806	=cut
807
808	#############################################################################
809		1872
810	=head2 SAFE SCRIPTING	1873	=head2 SAFE SCRIPTING
811		1874
812	Functions that provide a safe environment to compile and execute	1875	Functions that provide a safe environment to compile and execute
813	snippets of perl code without them endangering the safety of the server	1876	snippets of perl code without them endangering the safety of the server
814	itself. Looping constructs, I/O operators and other built-in functionality	1877	itself. Looping constructs, I/O operators and other built-in functionality
815	is not available in the safe scripting environment, and the number of	1878	is not available in the safe scripting environment, and the number of
816	functions and methods that cna be called is greatly reduced.	1879	functions and methods that can be called is greatly reduced.
817		1880
818	=cut	1881	=cut
819		1882
820	our $safe = new Safe "safe";	1883	our $safe = new Safe "safe";
821	our $safe_hole = new Safe::Hole;	1884	our $safe_hole = new Safe::Hole;
…		…
828		1891
829	=pod	1892	=pod
830		1893
831	The following fucntions and emthods are available within a safe environment:	1894	The following fucntions and emthods are available within a safe environment:
832		1895
833	cf::object contr pay_amount pay_player	1896	cf::object contr pay_amount pay_player map
834	cf::object::player player	1897	cf::object::player player
835	cf::player peaceful	1898	cf::player peaceful
		1899	cf::map trigger
836		1900
837	=cut	1901	=cut
838		1902
839	for (	1903	for (
840	["cf::object" => qw(contr pay_amount pay_player)],	1904	["cf::object" => qw(contr pay_amount pay_player map)],
841	["cf::object::player" => qw(player)],	1905	["cf::object::player" => qw(player)],
842	["cf::player" => qw(peaceful)],	1906	["cf::player" => qw(peaceful)],
		1907	["cf::map" => qw(trigger)],
843	) {	1908	) {
844	no strict 'refs';	1909	no strict 'refs';
845	my ($pkg, @funs) = @$_;	1910	my ($pkg, @funs) = @$_;
846	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1911	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
847	for @funs;	1912	for @funs;
…		…
912	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1977	*{"safe::$fun"} = $safe_hole->wrap ($cb);
913	}	1978	}
914		1979
915	=back	1980	=back
916		1981
		1982	=cut
		1983
917	#############################################################################	1984	#############################################################################
918		1985
919	=head2 EXTENSION DATABASE SUPPORT	1986	=head2 EXTENSION DATABASE SUPPORT
920		1987
921	Crossfire maintains a very simple database for extension use. It can	1988	Crossfire maintains a very simple database for extension use. It can
…		…
955		2022
956	Immediately write the database to disk I<if it is dirty>.	2023	Immediately write the database to disk I<if it is dirty>.
957		2024
958	=cut	2025	=cut
959		2026
		2027	our $DB;
		2028
960	{	2029	{
961	my $db;
962	my $path = cf::localdir . "/database.pst";	2030	my $path = cf::localdir . "/database.pst";
963		2031
964	sub db_load() {	2032	sub db_load() {
965	warn "loading database $path\n";#d# remove later
966	$db = stat $path ? Storable::retrieve $path : { };	2033	$DB = stat $path ? Storable::retrieve $path : { };
967	}	2034	}
968		2035
969	my $pid;	2036	my $pid;
970		2037
971	sub db_save() {	2038	sub db_save() {
972	warn "saving database $path\n";#d# remove later
973	waitpid $pid, 0 if $pid;	2039	waitpid $pid, 0 if $pid;
974	if (0 == ($pid = fork)) {	2040	if (0 == ($pid = fork)) {
975	$db->{_meta}{version} = 1;	2041	$DB->{_meta}{version} = 1;
976	Storable::nstore $db, "$path~";	2042	Storable::nstore $DB, "$path~";
977	rename "$path~", $path;	2043	rename "$path~", $path;
978	cf::_exit 0 if defined $pid;	2044	cf::_exit 0 if defined $pid;
979	}	2045	}
980	}	2046	}
981		2047
…		…
984	sub db_sync() {	2050	sub db_sync() {
985	db_save if $dirty;	2051	db_save if $dirty;
986	undef $dirty;	2052	undef $dirty;
987	}	2053	}
988		2054
989	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2055	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
990	db_sync;	2056	db_sync;
991	});	2057	});
992		2058
993	sub db_dirty() {	2059	sub db_dirty() {
994	$dirty = 1;	2060	$dirty = 1;
995	$idle->start;	2061	$idle->start;
996	}	2062	}
997		2063
998	sub db_get($;$) {	2064	sub db_get($;$) {
999	@_ >= 2	2065	@_ >= 2
1000	? $db->{$_[0]}{$_[1]}	2066	? $DB->{$_[0]}{$_[1]}
1001	: ($db->{$_[0]} ||= { })	2067	: ($DB->{$_[0]} ||= { })
1002	}	2068	}
1003		2069
1004	sub db_put($$;$) {	2070	sub db_put($$;$) {
1005	if (@_ >= 3) {	2071	if (@_ >= 3) {
1006	$db->{$_[0]}{$_[1]} = $_[2];	2072	$DB->{$_[0]}{$_[1]} = $_[2];
1007	} else {	2073	} else {
1008	$db->{$_[0]} = $_[1];	2074	$DB->{$_[0]} = $_[1];
1009	}	2075	}
1010	db_dirty;	2076	db_dirty;
1011	}	2077	}
1012		2078
1013	attach_global	2079	cf::global->attach (
1014	prio => 10000,	2080	prio => 10000,
1015	on_cleanup => sub {	2081	on_cleanup => sub {
1016	db_sync;	2082	db_sync;
1017	},	2083	},
1018	;	2084	);
1019	}	2085	}
1020		2086
1021	#############################################################################	2087	#############################################################################
1022	# the server's main()	2088	# the server's main()
1023		2089
		2090	sub cfg_load {
		2091	open my $fh, "<:utf8", cf::confdir . "/config"
		2092	or return;
		2093
		2094	local $/;
		2095	*CFG = YAML::Syck::Load <$fh>;
		2096
		2097	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2098
		2099	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2100	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2101
		2102	if (exists $CFG{mlockall}) {
		2103	eval {
		2104	$CFG{mlockall} ? &mlockall : &munlockall
		2105	and die "WARNING: m(un)lockall failed: $!\n";
		2106	};
		2107	warn $@ if $@;
		2108	}
		2109	}
		2110
1024	sub main {	2111	sub main {
		2112	# we must not ever block the main coroutine
		2113	local $Coro::idle = sub {
		2114	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2115	async { Event::one_event };
		2116	};
		2117
		2118	cfg_load;
1025	db_load;	2119	db_load;
1026	load_extensions;	2120	load_extensions;
1027	Event::loop;	2121	Event::loop;
1028	}	2122	}
1029		2123
1030	#############################################################################	2124	#############################################################################
1031	# initialisation	2125	# initialisation
1032		2126
1033	sub _perl_reload(&) {	2127	sub reload() {
1034	my ($msg) = @_;	2128	# can/must only be called in main
		2129	if ($Coro::current != $Coro::main) {
		2130	warn "can only reload from main coroutine\n";
		2131	return;
		2132	}
1035		2133
1036	$msg->("reloading...");	2134	warn "reloading...";
		2135
		2136	my $guard = freeze_mainloop;
		2137	cf::emergency_save;
1037		2138
1038	eval {	2139	eval {
		2140	# if anything goes wrong in here, we should simply crash as we already saved
		2141
1039	# cancel all watchers	2142	# cancel all watchers
1040	$_->cancel for Event::all_watchers;	2143	for (Event::all_watchers) {
		2144	$_->cancel if $_->data & WF_AUTOCANCEL;
		2145	}
		2146
		2147	# cancel all extension coros
		2148	$_->cancel for values %EXT_CORO;
		2149	%EXT_CORO = ();
1041		2150
1042	# unload all extensions	2151	# unload all extensions
1043	for (@exts) {	2152	for (@exts) {
1044	$msg->("unloading <$_>");	2153	warn "unloading <$_>";
1045	unload_extension $_;	2154	unload_extension $_;
1046	}	2155	}
1047		2156
1048	# unload all modules loaded from $LIBDIR	2157	# unload all modules loaded from $LIBDIR
1049	while (my ($k, $v) = each %INC) {	2158	while (my ($k, $v) = each %INC) {
1050	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2159	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1051		2160
1052	$msg->("removing <$k>");	2161	warn "removing <$k>";
1053	delete $INC{$k};	2162	delete $INC{$k};
1054		2163
1055	$k =~ s/\.pm$//;	2164	$k =~ s/\.pm$//;
1056	$k =~ s/\//::/g;	2165	$k =~ s/\//::/g;
1057		2166
…		…
1062	Symbol::delete_package $k;	2171	Symbol::delete_package $k;
1063	}	2172	}
1064		2173
1065	# sync database to disk	2174	# sync database to disk
1066	cf::db_sync;	2175	cf::db_sync;
		2176	IO::AIO::flush;
1067		2177
1068	# get rid of safe::, as good as possible	2178	# get rid of safe::, as good as possible
1069	Symbol::delete_package "safe::$_"	2179	Symbol::delete_package "safe::$_"
1070	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2180	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1071		2181
1072	# remove register_script_function callbacks	2182	# remove register_script_function callbacks
1073	# TODO	2183	# TODO
1074		2184
1075	# unload cf.pm "a bit"	2185	# unload cf.pm "a bit"
…		…
1078	# don't, removes xs symbols, too,	2188	# don't, removes xs symbols, too,
1079	# and global variables created in xs	2189	# and global variables created in xs
1080	#Symbol::delete_package __PACKAGE__;	2190	#Symbol::delete_package __PACKAGE__;
1081		2191
1082	# reload cf.pm	2192	# reload cf.pm
1083	$msg->("reloading cf.pm");	2193	warn "reloading cf.pm";
1084	require cf;	2194	require cf;
		2195	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1085		2196
1086	# load database again	2197	# load config and database again
		2198	cf::cfg_load;
1087	cf::db_load;	2199	cf::db_load;
1088		2200
1089	# load extensions	2201	# load extensions
1090	$msg->("load extensions");	2202	warn "load extensions";
1091	cf::load_extensions;	2203	cf::load_extensions;
1092		2204
1093	# reattach attachments to objects	2205	# reattach attachments to objects
1094	$msg->("reattach");	2206	warn "reattach";
1095	_global_reattach;	2207	_global_reattach;
		2208	reattach $_ for values %MAP;
1096	};	2209	};
1097	$msg->($@) if $@;
1098		2210
1099	$msg->("reloaded");	2211	if ($@) {
		2212	warn $@;
		2213	warn "error while reloading, exiting.";
		2214	exit 1;
		2215	}
		2216
		2217	warn "reloaded successfully";
1100	};	2218	};
1101		2219
1102	sub perl_reload() {	2220	#############################################################################
1103	_perl_reload {
1104	warn $_[0];
1105	print "$_[0]\n";
1106	};
1107	}
1108		2221
		2222	unless ($LINK_MAP) {
		2223	$LINK_MAP = cf::map::new;
		2224
		2225	$LINK_MAP->width (41);
		2226	$LINK_MAP->height (41);
		2227	$LINK_MAP->alloc;
		2228	$LINK_MAP->path ("{link}");
		2229	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2230	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2231
		2232	# dirty hack because... archetypes are not yet loaded
		2233	Event->timer (
		2234	after => 10,
		2235	cb => sub {
		2236	$_[0]->w->cancel;
		2237
		2238	# provide some exits "home"
		2239	my $exit = cf::object::new "exit";
		2240
		2241	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2242	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2243	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2244
		2245	$LINK_MAP->insert ($exit->clone, 19, 19);
		2246	$LINK_MAP->insert ($exit->clone, 19, 20);
		2247	$LINK_MAP->insert ($exit->clone, 19, 21);
		2248	$LINK_MAP->insert ($exit->clone, 20, 19);
		2249	$LINK_MAP->insert ($exit->clone, 20, 21);
		2250	$LINK_MAP->insert ($exit->clone, 21, 19);
		2251	$LINK_MAP->insert ($exit->clone, 21, 20);
		2252	$LINK_MAP->insert ($exit->clone, 21, 21);
		2253
		2254	$exit->destroy;
		2255	});
		2256
		2257	$LINK_MAP->{deny_save} = 1;
		2258	$LINK_MAP->{deny_reset} = 1;
		2259
		2260	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2261	}
		2262
		2263	register "<global>", __PACKAGE__;
		2264
1109	register_command "perl-reload", 0, sub {	2265	register_command "reload" => sub {
1110	my ($who, $arg) = @_;	2266	my ($who, $arg) = @_;
1111		2267
1112	if ($who->flag (FLAG_WIZ)) {	2268	if ($who->flag (FLAG_WIZ)) {
1113	_perl_reload {	2269	$who->message ("start of reload.");
1114	warn $_[0];	2270	reload;
1115	$who->message ($_[0]);	2271	$who->message ("end of reload.");
1116	};
1117	}	2272	}
1118	};	2273	};
1119		2274
1120	register "<global>", __PACKAGE__;
1121
1122	unshift @INC, $LIBDIR;	2275	unshift @INC, $LIBDIR;
1123		2276
1124	$TICK_WATCHER = Event->timer (	2277	$TICK_WATCHER = Event->timer (
		2278	reentrant => 0,
1125	prio => 1,	2279	prio => 0,
1126	at => $NEXT_TICK || 1,	2280	at => $NEXT_TICK || $TICK,
		2281	data => WF_AUTOCANCEL,
1127	cb => sub {	2282	cb => sub {
1128	cf::server_tick; # one server iteration	2283	cf::server_tick; # one server iteration
1129		2284	$RUNTIME += $TICK;
1130	my $NOW = Event::time;
1131	$NEXT_TICK += $TICK;	2285	$NEXT_TICK += $TICK;
1132		2286
1133	# if we are delayed by four ticks, skip them all	2287	# if we are delayed by four ticks or more, skip them all
1134	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2288	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1135		2289
1136	$TICK_WATCHER->at ($NEXT_TICK);	2290	$TICK_WATCHER->at ($NEXT_TICK);
1137	$TICK_WATCHER->start;	2291	$TICK_WATCHER->start;
1138	},	2292	},
1139	);	2293	);
1140		2294
		2295	IO::AIO::max_poll_time $TICK * 0.2;
		2296
		2297	Event->io (
		2298	fd => IO::AIO::poll_fileno,
		2299	poll => 'r',
		2300	prio => 5,
		2301	data => WF_AUTOCANCEL,
		2302	cb => \&IO::AIO::poll_cb,
		2303	);
		2304
		2305	Event->timer (
		2306	data => WF_AUTOCANCEL,
		2307	after => 0,
		2308	interval => 10,
		2309	cb => sub {
		2310	(Coro::unblock_sub {
		2311	write_runtime
		2312	or warn "ERROR: unable to write runtime file: $!";
		2313	})->();
		2314	},
		2315	);
		2316
		2317	END { cf::emergency_save }
		2318
1141	1	2319	1
1142		2320

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