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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.75 by root, Mon Oct 2 00:22:01 2006 UTC vs.
Revision 1.137 by root, Fri Jan 5 10:23:05 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 2.31 ();
10	use YAML::Syck ();	23	use YAML::Syck ();
11	use Time::HiRes;	24	use Time::HiRes;
12	use Event;	25
13	$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
14		27
15	# 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?
16	$YAML::Syck::ImplicitUnicode = 1;	29	$YAML::Syck::ImplicitUnicode = 1;
17		30
18	use strict;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
19		32
20	_init_vars;	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		34
22	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
23	our @EVENT;	39	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	40	our $LIBDIR = datadir . "/ext";
25		41
26	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
27	our $TICK_WATCHER;	43	our $TICK_WATCHER;
28	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
29		46
30	our %CFG;	47	our %CFG;
31		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
		76
32	#############################################################################	77	#############################################################################
33		78
34	=head2 GLOBAL VARIABLES	79	=head2 GLOBAL VARIABLES
35		80
36	=over 4	81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
37		91
38	=item $cf::LIBDIR	92	=item $cf::LIBDIR
39		93
40	The perl library directory, where extensions and cf-specific modules can	94	The perl library directory, where extensions and cf-specific modules can
41	be found. It will be added to C<@INC> automatically.	95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
42		100
43	=item $cf::TICK	101	=item $cf::TICK
44		102
45	The interval between server ticks, in seconds.	103	The interval between server ticks, in seconds.
46		104
…		…
54	=cut	112	=cut
55		113
56	BEGIN {	114	BEGIN {
57	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
58	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
59	$msg .= "\n"	119	$msg .= "\n"
60	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
61		121
62	print STDERR "cfperl: $msg";
63	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
64	};	123	};
65	}	124	}
66		125
		126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
67	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
68		132
69	# we bless all objects into (empty) derived classes to force a method lookup	133	# we bless all objects into (empty) derived classes to force a method lookup
70	# within the Safe compartment.	134	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	135	for my $pkg (qw(
		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
72	no strict 'refs';	142	no strict 'refs';
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	144	}
75		145
76	$Event::DIED = sub {	146	$Event::DIED = sub {
…		…
78	};	148	};
79		149
80	my %ext_pkg;	150	my %ext_pkg;
81	my @exts;	151	my @exts;
82	my @hook;	152	my @hook;
83	my %command;
84	my %extcmd;
85		153
86	=head2 UTILITY FUNCTIONS	154	=head2 UTILITY FUNCTIONS
87		155
88	=over 4	156	=over 4
89		157
…		…
111	sub to_json($) {	179	sub to_json($) {
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
113	JSON::Syck::Dump $_[0]	181	JSON::Syck::Dump $_[0]
114	}	182	}
115		183
		184	=item cf::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
		203	my ($key) = @_;
		204
		205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	=item cf::async { BLOCK }
		227
		228	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		229	error instead of exiting the server in case of a problem.
		230
		231	=cut
		232
		233	sub async(&) {
		234	my ($cb) = @_;
		235
		236	Coro::async {
		237	eval { $cb->() };
		238	warn $@ if $@;
		239	}
		240	}
		241
		242	sub freeze_mainloop {
		243	return unless $TICK_WATCHER->is_active;
		244
		245	my $guard = Coro::guard { $TICK_WATCHER->start };
		246	$TICK_WATCHER->stop;
		247	$guard
		248	}
		249
		250	=item cf::sync_job { BLOCK }
		251
		252	The design of crossfire+ requires that the main coro ($Coro::main) is
		253	always able to handle events or runnable, as crossfire+ is only partly
		254	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		255
		256	If it must be done, put the blocking parts into C<sync_job>. This will run
		257	the given BLOCK in another coroutine while waiting for the result. The
		258	server will be frozen during this time, so the block should either finish
		259	fast or be very important.
		260
		261	=cut
		262
		263	sub sync_job(&) {
		264	my ($job) = @_;
		265
		266	if ($Coro::current == $Coro::main) {
		267	# this is the main coro, too bad, we have to block
		268	# till the operation succeeds, freezing the server :/
		269
		270	# TODO: use suspend/resume instead
		271	# (but this is cancel-safe)
		272	my $freeze_guard = freeze_mainloop;
		273
		274	my $busy = 1;
		275	my @res;
		276
		277	(Coro::async {
		278	@res = eval { $job->() };
		279	warn $@ if $@;
		280	undef $busy;
		281	})->prio (Coro::PRIO_MAX);
		282
		283	while ($busy) {
		284	Coro::cede_notself;
		285	Event::one_event unless Coro::nready;
		286	}
		287
		288	wantarray ? @res : $res[0]
		289	} else {
		290	# we are in another coroutine, how wonderful, everything just works
		291
		292	$job->()
		293	}
		294	}
		295
		296	=item $coro = cf::coro { BLOCK }
		297
		298	Creates and returns a new coro. This coro is automcatially being canceled
		299	when the extension calling this is being unloaded.
		300
		301	=cut
		302
		303	sub coro(&) {
		304	my $cb = shift;
		305
		306	my $coro = &cf::async ($cb);
		307
		308	$coro->on_destroy (sub {
		309	delete $EXT_CORO{$coro+0};
		310	});
		311	$EXT_CORO{$coro+0} = $coro;
		312
		313	$coro
		314	}
		315
		316	sub write_runtime {
		317	my $runtime = cf::localdir . "/runtime";
		318
		319	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		320	or return;
		321
		322	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		323	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		324	and return;
		325
		326	aio_fsync $fh
		327	and return;
		328
		329	close $fh
		330	or return;
		331
		332	aio_rename "$runtime~", $runtime
		333	and return;
		334
		335	1
		336	}
		337
116	=back	338	=back
117		339
118	=cut	340	=cut
119		341
120	#############################################################################	342	#############################################################################
121		343
122	=head2 EVENTS AND OBJECT ATTACHMENTS	344	package cf::path;
		345
		346	sub new {
		347	my ($class, $path, $base) = @_;
		348
		349	$path = $path->as_string if ref $path;
		350
		351	my $self = bless { }, $class;
		352
		353	# {... are special paths that are not touched
		354	# ?xxx/... are special absolute paths
		355	# ?random/... random maps
		356	# /! non-realised random map exit
		357	# /... normal maps
		358	# ~/... per-player maps without a specific player (DO NOT USE)
		359	# ~user/... per-player map of a specific user
		360
		361	if ($path =~ /^{/) {
		362	# fine as it is
		363	} elsif ($path =~ s{^\?random/}{}) {
		364	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		365	$self->{random} = cf::from_json $data;
		366	} else {
		367	if ($path =~ s{^~([^/]+)?}{}) {
		368	$self->{user_rel} = 1;
		369
		370	if (defined $1) {
		371	$self->{user} = $1;
		372	} elsif ($base =~ m{^~([^/]+)/}) {
		373	$self->{user} = $1;
		374	} else {
		375	warn "cannot resolve user-relative path without user <$path,$base>\n";
		376	}
		377	} elsif ($path =~ /^\//) {
		378	# already absolute
		379	} else {
		380	$base =~ s{[^/]+/?$}{};
		381	return $class->new ("$base/$path");
		382	}
		383
		384	for ($path) {
		385	redo if s{/\.?/}{/};
		386	redo if s{/[^/]+/\.\./}{/};
		387	}
		388	}
		389
		390	$self->{path} = $path;
		391
		392	$self
		393	}
		394
		395	# the name / primary key / in-game path
		396	sub as_string {
		397	my ($self) = @_;
		398
		399	$self->{user_rel} ? "~$self->{user}$self->{path}"
		400	: $self->{random} ? "?random/$self->{path}"
		401	: $self->{path}
		402	}
		403
		404	# the displayed name, this is a one way mapping
		405	sub visible_name {
		406	my ($self) = @_;
		407
		408	# if (my $rmp = $self->{random}) {
		409	# # todo: be more intelligent about this
		410	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		411	# } else {
		412	$self->as_string
		413	# }
		414	}
		415
		416	# escape the /'s in the path
		417	sub _escaped_path {
		418	# ∕ is U+2215
		419	(my $path = $_[0]{path}) =~ s/\//∕/g;
		420	$path
		421	}
		422
		423	# the original (read-only) location
		424	sub load_path {
		425	my ($self) = @_;
		426
		427	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		428	}
		429
		430	# the temporary/swap location
		431	sub save_path {
		432	my ($self) = @_;
		433
		434	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		435	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		436	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		437	}
		438
		439	# the unique path, might be eq to save_path
		440	sub uniq_path {
		441	my ($self) = @_;
		442
		443	$self->{user_rel} || $self->{random}
		444	? undef
		445	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		446	}
		447
		448	# return random map parameters, or undef
		449	sub random_map_params {
		450	my ($self) = @_;
		451
		452	$self->{random}
		453	}
		454
		455	# this is somewhat ugly, but style maps do need special treatment
		456	sub is_style_map {
		457	$_[0]{path} =~ m{^/styles/}
		458	}
		459
		460	package cf;
		461
		462	#############################################################################
		463
		464	=head2 ATTACHABLE OBJECTS
		465
		466	Many objects in crossfire are so-called attachable objects. That means you can
		467	attach callbacks/event handlers (a collection of which is called an "attachment")
		468	to it. All such attachable objects support the following methods.
		469
		470	In the following description, CLASS can be any of C<global>, C<object>
		471	C<player>, C<client> or C<map> (i.e. the attachable objects in
		472	crossfire+).
123		473
124	=over 4	474	=over 4
125		475
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	476	=item $attachable->attach ($attachment, key => $value...)
139		477
140	=item $map->detach ($attachment)	478	=item $attachable->detach ($attachment)
141		479
142	Attach/detach a pre-registered attachment to a map.	480	Attach/detach a pre-registered attachment to a specific object and give it
		481	the specified key/value pairs as arguments.
143		482
144	=item $bool = $object->attached ($name)	483	Example, attach a minesweeper attachment to the given object, making it a
		484	10x10 minesweeper game:
145		485
146	=item $bool = $player->attached ($name)	486	$obj->attach (minesweeper => width => 10, height => 10);
147		487
148	=item $bool = $map->attached ($name)	488	=item $bool = $attachable->attached ($name)
149		489
150	Checks wether the named attachment is currently attached to the object.	490	Checks wether the named attachment is currently attached to the object.
151		491
152	=item cf::attach_global ...	492	=item cf::CLASS->attach ...
153		493
154	Attach handlers for global events.	494	=item cf::CLASS->detach ...
155		495
156	This and all following C<attach_*>-functions expect any number of the	496	Define an anonymous attachment and attach it to all objects of the given
157	following handler/hook descriptions:	497	CLASS. See the next function for an explanation of its arguments.
		498
		499	You can attach to global events by using the C<cf::global> class.
		500
		501	Example, log all player logins:
		502
		503	cf::player->attach (
		504	on_login => sub {
		505	my ($pl) = @_;
		506	...
		507	},
		508	);
		509
		510	Example, attach to the jeweler skill:
		511
		512	cf::object->attach (
		513	type => cf::SKILL,
		514	subtype => cf::SK_JEWELER,
		515	on_use_skill => sub {
		516	my ($sk, $ob, $part, $dir, $msg) = @_;
		517	...
		518	},
		519	);
		520
		521	=item cf::CLASS::attachment $name, ...
		522
		523	Register an attachment by C<$name> through which attachable objects of the
		524	given CLASS can refer to this attachment.
		525
		526	Some classes such as crossfire maps and objects can specify attachments
		527	that are attached at load/instantiate time, thus the need for a name.
		528
		529	These calls expect any number of the following handler/hook descriptions:
158		530
159	=over 4	531	=over 4
160		532
161	=item prio => $number	533	=item prio => $number
162		534
…		…
164	by another C<prio> setting). Lower priority handlers get executed	536	by another C<prio> setting). Lower priority handlers get executed
165	earlier. The default priority is C<0>, and many built-in handlers are	537	earlier. The default priority is C<0>, and many built-in handlers are
166	registered at priority C<-1000>, so lower priorities should not be used	538	registered at priority C<-1000>, so lower priorities should not be used
167	unless you know what you are doing.	539	unless you know what you are doing.
168		540
		541	=item type => $type
		542
		543	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		544	given type of objects only (the additional parameter C<subtype> can be
		545	used to further limit to the given subtype).
		546
169	=item on_I<event> => \&cb	547	=item on_I<event> => \&cb
170		548
171	Call the given code reference whenever the named event happens (event is	549	Call the given code reference whenever the named event happens (event is
172	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	550	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
173	handlers are recognised generally depends on the type of object these	551	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	560	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	561	object/class are recognised.
184		562
185	=back	563	=back
186		564
187	=item cf::attach_to_type $object_type, $subtype, ...	565	Example, define an attachment called "sockpuppet" that calls the given
		566	event handler when a monster attacks:
188		567
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	568	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	569	on_skill_attack => sub {
191	type.	570	my ($self, $victim) = @_;
192		571	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	572	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	573	}
414	}
415		574
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	575	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		576
442	Just because you have a perl object does not mean that the corresponding	577	Just because you have a perl object does not mean that the corresponding
443	C-level object still exists. If you try to access an object that has no	578	C-level object still exists. If you try to access an object that has no
444	valid C counterpart anymore you get an exception at runtime. This method	579	valid C counterpart anymore you get an exception at runtime. This method
445	can be used to test for existence of the C object part without causing an	580	can be used to test for existence of the C object part without causing an
446	exception.	581	exception.
447		582
		583	=cut
		584
		585	# the following variables are defined in .xs and must not be re-created
		586	our @CB_GLOBAL = (); # registry for all global events
		587	our @CB_ATTACHABLE = (); # registry for all attachables
		588	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		589	our @CB_PLAYER = ();
		590	our @CB_CLIENT = ();
		591	our @CB_TYPE = (); # registry for type (cf-object class) based events
		592	our @CB_MAP = ();
		593
		594	my %attachment;
		595
		596	sub _attach_cb($$$$) {
		597	my ($registry, $event, $prio, $cb) = @_;
		598
		599	use sort 'stable';
		600
		601	$cb = [$prio, $cb];
		602
		603	@{$registry->[$event]} = sort
		604	{ $a->[0] cmp $b->[0] }
		605	@{$registry->[$event] || []}, $cb;
		606	}
		607
		608	# hack
		609	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		610
		611	# attach handles attaching event callbacks
		612	# the only thing the caller has to do is pass the correct
		613	# registry (== where the callback attaches to).
		614	sub _attach {
		615	my ($registry, $klass, @arg) = @_;
		616
		617	my $object_type;
		618	my $prio = 0;
		619	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		620
		621	#TODO: get rid of this hack
		622	if ($attachable_klass{$klass}) {
		623	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		624	}
		625
		626	while (@arg) {
		627	my $type = shift @arg;
		628
		629	if ($type eq "prio") {
		630	$prio = shift @arg;
		631
		632	} elsif ($type eq "type") {
		633	$object_type = shift @arg;
		634	$registry = $CB_TYPE[$object_type] ||= [];
		635
		636	} elsif ($type eq "subtype") {
		637	defined $object_type or Carp::croak "subtype specified without type";
		638	my $object_subtype = shift @arg;
		639	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		640
		641	} elsif ($type eq "package") {
		642	my $pkg = shift @arg;
		643
		644	while (my ($name, $id) = each %cb_id) {
		645	if (my $cb = $pkg->can ($name)) {
		646	_attach_cb $registry, $id, $prio, $cb;
		647	}
		648	}
		649
		650	} elsif (exists $cb_id{$type}) {
		651	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		652
		653	} elsif (ref $type) {
		654	warn "attaching objects not supported, ignoring.\n";
		655
		656	} else {
		657	shift @arg;
		658	warn "attach argument '$type' not supported, ignoring.\n";
		659	}
		660	}
		661	}
		662
		663	sub _object_attach {
		664	my ($obj, $name, %arg) = @_;
		665
		666	return if exists $obj->{_attachment}{$name};
		667
		668	if (my $attach = $attachment{$name}) {
		669	my $registry = $obj->registry;
		670
		671	for (@$attach) {
		672	my ($klass, @attach) = @$_;
		673	_attach $registry, $klass, @attach;
		674	}
		675
		676	$obj->{$name} = \%arg;
		677	} else {
		678	warn "object uses attachment '$name' that is not available, postponing.\n";
		679	}
		680
		681	$obj->{_attachment}{$name} = undef;
		682	}
		683
		684	sub cf::attachable::attach {
		685	if (ref $_[0]) {
		686	_object_attach @_;
		687	} else {
		688	_attach shift->_attach_registry, @_;
		689	}
		690	};
		691
		692	# all those should be optimised
		693	sub cf::attachable::detach {
		694	my ($obj, $name) = @_;
		695
		696	if (ref $obj) {
		697	delete $obj->{_attachment}{$name};
		698	reattach ($obj);
		699	} else {
		700	Carp::croak "cannot, currently, detach class attachments";
		701	}
		702	};
		703
		704	sub cf::attachable::attached {
		705	my ($obj, $name) = @_;
		706
		707	exists $obj->{_attachment}{$name}
		708	}
		709
		710	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		711	eval "#line " . __LINE__ . " 'cf.pm'
		712	sub cf::\L$klass\E::_attach_registry {
		713	(\\\@CB_$klass, KLASS_$klass)
		714	}
		715
		716	sub cf::\L$klass\E::attachment {
		717	my \$name = shift;
		718
		719	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		720	}
		721	";
		722	die if $@;
		723	}
		724
		725	our $override;
		726	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		727
		728	sub override {
		729	$override = 1;
		730	@invoke_results = ();
		731	}
		732
		733	sub do_invoke {
		734	my $event = shift;
		735	my $callbacks = shift;
		736
		737	@invoke_results = ();
		738
		739	local $override;
		740
		741	for (@$callbacks) {
		742	eval { &{$_->[1]} };
		743
		744	if ($@) {
		745	warn "$@";
		746	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		747	override;
		748	}
		749
		750	return 1 if $override;
		751	}
		752
		753	0
		754	}
		755
		756	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		757
		758	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		759
		760	Generate an object-specific event with the given arguments.
		761
		762	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		763	removed in future versions), and there is no public API to access override
		764	results (if you must, access C<@cf::invoke_results> directly).
		765
448	=back	766	=back
449		767
450	=cut	768	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		769
456	#############################################################################	770	#############################################################################
457	# object support	771	# object support
458		772
459	sub instantiate {
460	my ($obj, $data) = @_;
461
462	$data = from_json $data;
463
464	for (@$data) {
465	my ($name, $args) = @$_;
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}
470
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	773	sub reattach {
		774	# basically do the same as instantiate, without calling instantiate
473	my ($obj) = @_;	775	my ($obj) = @_;
		776
474	my $registry = $obj->registry;	777	my $registry = $obj->registry;
475		778
476	@$registry = ();	779	@$registry = ();
477		780
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	781	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		782
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	783	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	784	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	785	for (@$attach) {
483	my ($klass, @attach) = @$_;	786	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	787	_attach $registry, $klass, @attach;
485	}	788	}
486	} else {	789	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	790	warn "object uses attachment '$name' that is not available, postponing.\n";
488	}	791	}
489	}	792	}
490	}	793	}
491		794
492	sub object_freezer_save {	795	cf::attachable->attach (
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}
521	}
522
523	sub object_thawer_load {
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	796	prio => -1000000,
		797	on_instantiate => sub {
		798	my ($obj, $data) = @_;
		799
		800	$data = from_json $data;
		801
		802	for (@$data) {
		803	my ($name, $args) = @$_;
		804
		805	$obj->attach ($name, %{$args || {} });
		806	}
		807	},
		808	on_reattach => \&reattach,
544	on_clone => sub {	809	on_clone => sub {
545	my ($src, $dst) = @_;	810	my ($src, $dst) = @_;
546		811
547	@{$dst->registry} = @{$src->registry};	812	@{$dst->registry} = @{$src->registry};
548		813
549	%$dst = %$src;	814	%$dst = %$src;
550		815
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	816	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	817	if exists $src->{_attachment};
553	},	818	},
554	;	819	);
		820
		821	sub object_freezer_save {
		822	my ($filename, $rdata, $objs) = @_;
		823
		824	sync_job {
		825	if (length $$rdata) {
		826	warn sprintf "saving %s (%d,%d)\n",
		827	$filename, length $$rdata, scalar @$objs;
		828
		829	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		830	chmod SAVE_MODE, $fh;
		831	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		832	aio_fsync $fh;
		833	close $fh;
		834
		835	if (@$objs) {
		836	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		837	chmod SAVE_MODE, $fh;
		838	my $data = Storable::nfreeze { version => 1, objs => $objs };
		839	aio_write $fh, 0, (length $data), $data, 0;
		840	aio_fsync $fh;
		841	close $fh;
		842	aio_rename "$filename.pst~", "$filename.pst";
		843	}
		844	} else {
		845	aio_unlink "$filename.pst";
		846	}
		847
		848	aio_rename "$filename~", $filename;
		849	} else {
		850	warn "FATAL: $filename~: $!\n";
		851	}
		852	} else {
		853	aio_unlink $filename;
		854	aio_unlink "$filename.pst";
		855	}
		856	}
		857	}
		858
		859	sub object_freezer_as_string {
		860	my ($rdata, $objs) = @_;
		861
		862	use Data::Dumper;
		863
		864	$$rdata . Dumper $objs
		865	}
		866
		867	sub object_thawer_load {
		868	my ($filename) = @_;
		869
		870	my ($data, $av);
		871
		872	(aio_load $filename, $data) >= 0
		873	or return;
		874
		875	unless (aio_stat "$filename.pst") {
		876	(aio_load "$filename.pst", $av) >= 0
		877	or return;
		878	$av = eval { (Storable::thaw $av)->{objs} };
		879	}
		880
		881	warn sprintf "loading %s (%d)\n",
		882	$filename, length $data, scalar @{$av || []};#d#
		883	return ($data, $av);
		884	}
555		885
556	#############################################################################	886	#############################################################################
557	# old plug-in events	887	# command handling &c
558		888
559	sub inject_event {	889	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		890
563	my $cb = $hook[$event_code]{$extension}	891	Register a callback for execution when the client sends the user command
564	or return;	892	$name.
565		893
566	&$cb	894	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		895
588	sub register_command {	896	sub register_command {
589	my ($name, $time, $cb) = @_;	897	my ($name, $cb) = @_;
590		898
591	my $caller = caller;	899	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	900	#warn "registering command '$name/$time' to '$caller'";
593		901
594	push @{ $command{$name} }, [$time, $cb, $caller];	902	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	903	}
		904
		905	=item cf::register_extcmd $name => \&callback($pl,$packet);
		906
		907	Register a callbackf ro execution when the client sends an extcmd packet.
		908
		909	If the callback returns something, it is sent back as if reply was being
		910	called.
		911
		912	=cut
597		913
598	sub register_extcmd {	914	sub register_extcmd {
599	my ($name, $cb) = @_;	915	my ($name, $cb) = @_;
600		916
601	my $caller = caller;	917	my $caller = caller;
602	#warn "registering extcmd '$name' to '$caller'";	918	#warn "registering extcmd '$name' to '$caller'";
603		919
604	$extcmd{$name} = [$cb, $caller];	920	$EXTCMD{$name} = [$cb, $caller];
605	}	921	}
		922
		923	cf::player->attach (
		924	on_command => sub {
		925	my ($pl, $name, $params) = @_;
		926
		927	my $cb = $COMMAND{$name}
		928	or return;
		929
		930	for my $cmd (@$cb) {
		931	$cmd->[1]->($pl->ob, $params);
		932	}
		933
		934	cf::override;
		935	},
		936	on_extcmd => sub {
		937	my ($pl, $buf) = @_;
		938
		939	my $msg = eval { from_json $buf };
		940
		941	if (ref $msg) {
		942	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		943	if (my %reply = $cb->[0]->($pl, $msg)) {
		944	$pl->ext_reply ($msg->{msgid}, %reply);
		945	}
		946	}
		947	} else {
		948	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		949	}
		950
		951	cf::override;
		952	},
		953	);
606		954
607	sub register {	955	sub register {
608	my ($base, $pkg) = @_;	956	my ($base, $pkg) = @_;
609		957
610	#TODO	958	#TODO
…		…
629	. "#line 1 \"$path\"\n{\n"	977	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })	978	. (do { local $/; <$fh> })
631	. "\n};\n1";	979	. "\n};\n1";
632		980
633	eval $source	981	eval $source
634	or die "$path: $@";	982	or die $@ ? "$path: $@\n"
		983	: "extension disabled.\n";
635		984
636	push @exts, $pkg;	985	push @exts, $pkg;
637	$ext_pkg{$base} = $pkg;	986	$ext_pkg{$base} = $pkg;
638		987
639	# no strict 'refs';	988	# no strict 'refs';
…		…
652	# for my $idx (0 .. $#PLUGIN_EVENT) {	1001	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};	1002	# delete $hook[$idx]{$pkg};
654	# }	1003	# }
655		1004
656	# remove commands	1005	# remove commands
657	for my $name (keys %command) {	1006	for my $name (keys %COMMAND) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1007	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
659		1008
660	if (@cb) {	1009	if (@cb) {
661	$command{$name} = \@cb;	1010	$COMMAND{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {	1011	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};	1012	delete $COMMAND{$name};
666	}	1013	}
667	}	1014	}
668		1015
669	# remove extcmds	1016	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1017	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
671	delete $extcmd{$name};	1018	delete $EXTCMD{$name};
672	}	1019	}
673		1020
674	if (my $cb = $pkg->can ("unload")) {	1021	if (my $cb = $pkg->can ("unload")) {
675	eval {	1022	eval {
676	$cb->($pkg);	1023	$cb->($pkg);
…		…
680		1027
681	Symbol::delete_package $pkg;	1028	Symbol::delete_package $pkg;
682	}	1029	}
683		1030
684	sub load_extensions {	1031	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {	1032	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;	1033	next unless -r $ext;
689	eval {	1034	eval {
690	load_extension $ext;	1035	load_extension $ext;
691	1	1036	1
692	} or warn "$ext not loaded: $@";	1037	} or warn "$ext not loaded: $@";
693	}	1038	}
694	}	1039	}
695		1040
696	#############################################################################	1041	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699
700	attach_to_players
701	on_extcmd => sub {
702	my ($pl, $buf) = @_;
703
704	my $msg = eval { from_json $buf };
705
706	if (ref $msg) {
707	if (my $cb = $extcmd{$msg->{msgtype}}) {
708	if (my %reply = $cb->[0]->($pl, $msg)) {
709	$pl->ext_reply ($msg->{msgid}, %reply);
710	}
711	}
712	} else {
713	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
714	}
715
716	cf::override;
717	},
718	;
719
720	#############################################################################
721	# load/save/clean perl data associated with a map	1042	# load/save/clean perl data associated with a map
722		1043
723	*cf::mapsupport::on_clean = sub {	1044	*cf::mapsupport::on_clean = sub {
724	my ($map) = @_;	1045	my ($map) = @_;
725		1046
…		…
727	defined $path or return;	1048	defined $path or return;
728		1049
729	unlink "$path.pst";	1050	unlink "$path.pst";
730	};	1051	};
731		1052
732	attach_to_maps prio => -10000, package => cf::mapsupport::;	1053	cf::map->attach (prio => -10000, package => cf::mapsupport::);
733		1054
734	#############################################################################	1055	#############################################################################
735	# load/save perl data associated with player->ob objects	1056	# load/save perl data associated with player->ob objects
736		1057
737	sub all_objects(@) {	1058	sub all_objects(@) {
738	@_, map all_objects ($_->inv), @_	1059	@_, map all_objects ($_->inv), @_
739	}	1060	}
740		1061
741	# TODO: compatibility cruft, remove when no longer needed	1062	# TODO: compatibility cruft, remove when no longer needed
742	attach_to_players	1063	cf::player->attach (
743	on_load => sub {	1064	on_load => sub {
744	my ($pl, $path) = @_;	1065	my ($pl, $path) = @_;
745		1066
746	for my $o (all_objects $pl->ob) {	1067	for my $o (all_objects $pl->ob) {
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1068	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
749		1070
750	%$o = %{ Storable::thaw pack "H*", $value };	1071	%$o = %{ Storable::thaw pack "H*", $value };
751	}	1072	}
752	}	1073	}
753	},	1074	},
754	;	1075	);
755		1076
756	#############################################################################	1077	#############################################################################
757		1078
758	=head2 CORE EXTENSIONS	1079	=head2 CORE EXTENSIONS
759		1080
760	Functions and methods that extend core crossfire objects.	1081	Functions and methods that extend core crossfire objects.
		1082
		1083	=head3 cf::player
761		1084
762	=over 4	1085	=over 4
763		1086
764	=item cf::player::exists $login	1087	=item cf::player::exists $login
765		1088
…		…
770	sub cf::player::exists($) {	1093	sub cf::player::exists($) {
771	cf::player::find $_[0]	1094	cf::player::find $_[0]
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1095	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
773	}	1096	}
774		1097
		1098	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1099
		1100	Sends an ext reply to the player.
		1101
		1102	=cut
		1103
		1104	sub cf::player::ext_reply($$$%) {
		1105	my ($self, $id, %msg) = @_;
		1106
		1107	$msg{msgid} = $id;
		1108
		1109	$self->send ("ext " . to_json \%msg);
		1110	}
		1111
		1112	=back
		1113
		1114
		1115	=head3 cf::map
		1116
		1117	=over 4
		1118
		1119	=cut
		1120
		1121	package cf::map;
		1122
		1123	use Fcntl;
		1124	use Coro::AIO;
		1125
		1126	our $MAX_RESET = 3600;
		1127	our $DEFAULT_RESET = 3000;
		1128
		1129	sub generate_random_map {
		1130	my ($path, $rmp) = @_;
		1131
		1132	# mit "rum" bekleckern, nicht
		1133	cf::map::_create_random_map
		1134	$path,
		1135	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1136	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1137	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1138	$rmp->{exit_on_final_map},
		1139	$rmp->{xsize}, $rmp->{ysize},
		1140	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1141	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1142	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1143	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1144	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1145	(cf::region::find $rmp->{region})
		1146	}
		1147
		1148	# and all this just because we cannot iterate over
		1149	# all maps in C++...
		1150	sub change_all_map_light {
		1151	my ($change) = @_;
		1152
		1153	$_->change_map_light ($change)
		1154	for grep $_->outdoor, values %cf::MAP;
		1155	}
		1156
		1157	sub try_load_header($) {
		1158	my ($path) = @_;
		1159
		1160	utf8::encode $path;
		1161	aio_open $path, O_RDONLY, 0
		1162	or return;
		1163
		1164	my $map = cf::map::new
		1165	or return;
		1166
		1167	# for better error messages only, will be overwritten
		1168	$map->path ($path);
		1169
		1170	$map->load_header ($path)
		1171	or return;
		1172
		1173	$map->{load_path} = $path;
		1174
		1175	$map
		1176	}
		1177
		1178	sub find;
		1179	sub find {
		1180	my ($path, $origin) = @_;
		1181
		1182	#warn "find<$path,$origin>\n";#d#
		1183
		1184	$path = new cf::path $path, $origin && $origin->path;
		1185	my $key = $path->as_string;
		1186
		1187	cf::lock_wait "map_find:$key";
		1188
		1189	$cf::MAP{$key} || do {
		1190	my $guard = cf::lock_acquire "map_find:$key";
		1191
		1192	# do it the slow way
		1193	my $map = try_load_header $path->save_path;
		1194
		1195	Coro::cede;
		1196
		1197	if ($map) {
		1198	$map->last_access ((delete $map->{last_access})
		1199	|| $cf::RUNTIME); #d#
		1200	# safety
		1201	$map->{instantiate_time} = $cf::RUNTIME
		1202	if $map->{instantiate_time} > $cf::RUNTIME;
		1203	} else {
		1204	if (my $rmp = $path->random_map_params) {
		1205	$map = generate_random_map $key, $rmp;
		1206	} else {
		1207	$map = try_load_header $path->load_path;
		1208	}
		1209
		1210	$map or return;
		1211
		1212	$map->{load_original} = 1;
		1213	$map->{instantiate_time} = $cf::RUNTIME;
		1214	$map->last_access ($cf::RUNTIME);
		1215	$map->instantiate;
		1216
		1217	# per-player maps become, after loading, normal maps
		1218	$map->per_player (0) if $path->{user_rel};
		1219	}
		1220
		1221	$map->path ($key);
		1222	$map->{path} = $path;
		1223	$map->{last_save} = $cf::RUNTIME;
		1224
		1225	Coro::cede;
		1226
		1227	if ($map->should_reset) {
		1228	$map->reset;
		1229	undef $guard;
		1230	$map = find $path
		1231	or return;
		1232	}
		1233
		1234	$cf::MAP{$key} = $map
		1235	}
		1236	}
		1237
		1238	sub load {
		1239	my ($self) = @_;
		1240
		1241	my $path = $self->{path};
		1242	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1243
		1244	return if $self->in_memory != cf::MAP_SWAPPED;
		1245
		1246	$self->in_memory (cf::MAP_LOADING);
		1247
		1248	$self->alloc;
		1249	$self->load_objects ($self->{load_path}, 1)
		1250	or return;
		1251
		1252	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1253	if delete $self->{load_original};
		1254
		1255	if (my $uniq = $path->uniq_path) {
		1256	utf8::encode $uniq;
		1257	if (aio_open $uniq, O_RDONLY, 0) {
		1258	$self->clear_unique_items;
		1259	$self->load_objects ($uniq, 0);
		1260	}
		1261	}
		1262
		1263	Coro::cede;
		1264
		1265	# now do the right thing for maps
		1266	$self->link_multipart_objects;
		1267
		1268	if ($self->{path}->is_style_map) {
		1269	$self->{deny_save} = 1;
		1270	$self->{deny_reset} = 1;
		1271	} else {
		1272	$self->fix_auto_apply;
		1273	$self->decay_objects;
		1274	$self->update_buttons;
		1275	$self->set_darkness_map;
		1276	$self->difficulty ($self->estimate_difficulty)
		1277	unless $self->difficulty;
		1278	$self->activate;
		1279	}
		1280
		1281	Coro::cede;
		1282
		1283	$self->in_memory (cf::MAP_IN_MEMORY);
		1284	}
		1285
		1286	sub find_sync {
		1287	my ($path, $origin) = @_;
		1288
		1289	cf::sync_job { cf::map::find $path, $origin }
		1290	}
		1291
		1292	sub do_load_sync {
		1293	my ($map) = @_;
		1294
		1295	cf::sync_job { $map->load };
		1296	}
		1297
		1298	sub save {
		1299	my ($self) = @_;
		1300
		1301	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1302
		1303	$self->{last_save} = $cf::RUNTIME;
		1304
		1305	return unless $self->dirty;
		1306
		1307	my $save = $self->{path}->save_path; utf8::encode $save;
		1308	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1309
		1310	$self->{load_path} = $save;
		1311
		1312	return if $self->{deny_save};
		1313
		1314	local $self->{last_access} = $self->last_access;#d#
		1315
		1316	if ($uniq) {
		1317	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1318	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1319	} else {
		1320	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1321	}
		1322	}
		1323
		1324	sub swap_out {
		1325	my ($self) = @_;
		1326
		1327	# save first because save cedes
		1328	$self->save;
		1329
		1330	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1331
		1332	return if $self->players;
		1333	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1334	return if $self->{deny_save};
		1335
		1336	$self->clear;
		1337	$self->in_memory (cf::MAP_SWAPPED);
		1338	}
		1339
		1340	sub reset_at {
		1341	my ($self) = @_;
		1342
		1343	# TODO: safety, remove and allow resettable per-player maps
		1344	return 1e99 if $self->{path}{user_rel};
		1345	return 1e99 if $self->{deny_reset};
		1346
		1347	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1348	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1349
		1350	$time + $to
		1351	}
		1352
		1353	sub should_reset {
		1354	my ($self) = @_;
		1355
		1356	$self->reset_at <= $cf::RUNTIME
		1357	}
		1358
		1359	sub unlink_save {
		1360	my ($self) = @_;
		1361
		1362	utf8::encode (my $save = $self->{path}->save_path);
		1363	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1364	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1365	}
		1366
		1367	sub rename {
		1368	my ($self, $new_path) = @_;
		1369
		1370	$self->unlink_save;
		1371
		1372	delete $cf::MAP{$self->path};
		1373	$self->{path} = new cf::path $new_path;
		1374	$self->path ($self->{path}->as_string);
		1375	$cf::MAP{$self->path} = $self;
		1376
		1377	$self->save;
		1378	}
		1379
		1380	sub reset {
		1381	my ($self) = @_;
		1382
		1383	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1384
		1385	return if $self->players;
		1386	return if $self->{path}{user_rel};#d#
		1387
		1388	warn "resetting map ", $self->path;#d#
		1389
		1390	delete $cf::MAP{$self->path};
		1391
		1392	$_->clear_links_to ($self) for values %cf::MAP;
		1393
		1394	$self->unlink_save;
		1395	$self->destroy;
		1396	}
		1397
		1398	my $nuke_counter = "aaaa";
		1399
		1400	sub nuke {
		1401	my ($self) = @_;
		1402
		1403	$self->{deny_save} = 1;
		1404	$self->reset_timeout (1);
		1405	$self->rename ("{nuke}/" . ($nuke_counter++));
		1406	$self->reset; # polite request, might not happen
		1407	}
		1408
		1409	sub customise_for {
		1410	my ($map, $ob) = @_;
		1411
		1412	if ($map->per_player) {
		1413	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1414	}
		1415
		1416	$map
		1417	}
		1418
		1419	sub emergency_save {
		1420	my $freeze_guard = cf::freeze_mainloop;
		1421
		1422	warn "enter emergency map save\n";
		1423
		1424	cf::sync_job {
		1425	warn "begin emergency map save\n";
		1426	$_->save for values %cf::MAP;
		1427	};
		1428
		1429	warn "end emergency map save\n";
		1430	}
		1431
		1432	package cf;
		1433
		1434	=back
		1435
		1436
		1437	=head3 cf::object::player
		1438
		1439	=over 4
		1440
775	=item $object->reply ($npc, $msg[, $flags])	1441	=item $player_object->reply ($npc, $msg[, $flags])
776		1442
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1443	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	1444	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	1445	dialogue with the given NPC character.
780		1446
781	=cut	1447	=cut
782		1448
783	# rough implementation of a future "reply" method that works	1449	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	1450	# with dialog boxes.
		1451	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	1452	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	1453	my ($self, $npc, $msg, $flags) = @_;
787		1454
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1455	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		1456
…		…
793	$msg = $npc->name . " says: $msg" if $npc;	1460	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	1461	$self->message ($msg, $flags);
795	}	1462	}
796	}	1463	}
797		1464
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	1465	=item $player_object->may ("access")
799		1466
800	Sends an ext reply to the player.	1467	Returns wether the given player is authorized to access resource "access"
		1468	(e.g. "command_wizcast").
801		1469
802	=cut	1470	=cut
803		1471
804	sub cf::player::ext_reply($$$%) {	1472	sub cf::object::player::may {
		1473	my ($self, $access) = @_;
		1474
		1475	$self->flag (cf::FLAG_WIZ) ||
		1476	(ref $cf::CFG{"may_$access"}
		1477	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1478	: $cf::CFG{"may_$access"})
		1479	}
		1480
		1481	=item $player_object->enter_link
		1482
		1483	Freezes the player and moves him/her to a special map (C<{link}>).
		1484
		1485	The player should be reaosnably safe there for short amounts of time. You
		1486	I<MUST> call C<leave_link> as soon as possible, though.
		1487
		1488	=item $player_object->leave_link ($map, $x, $y)
		1489
		1490	Moves the player out of the specila link map onto the given map. If the
		1491	map is not valid (or omitted), the player will be moved back to the
		1492	location he/she was before the call to C<enter_link>, or, if that fails,
		1493	to the emergency map position.
		1494
		1495	Might block.
		1496
		1497	=cut
		1498
		1499	sub cf::object::player::enter_link {
		1500	my ($self) = @_;
		1501
		1502	$self->deactivate_recursive;
		1503
		1504	return if $self->map == $LINK_MAP;
		1505
		1506	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1507	if $self->map;
		1508
		1509	$self->enter_map ($LINK_MAP, 20, 20);
		1510	}
		1511
		1512	sub cf::object::player::leave_link {
		1513	my ($self, $map, $x, $y) = @_;
		1514
		1515	my $link_pos = delete $self->{_link_pos};
		1516
		1517	unless ($map) {
		1518	# restore original map position
		1519	($map, $x, $y) = @{ $link_pos || [] };
		1520	$map = cf::map::find $map;
		1521
		1522	unless ($map) {
		1523	($map, $x, $y) = @$EMERGENCY_POSITION;
		1524	$map = cf::map::find $map
		1525	or die "FATAL: cannot load emergency map\n";
		1526	}
		1527	}
		1528
		1529	($x, $y) = (-1, -1)
		1530	unless (defined $x) && (defined $y);
		1531
		1532	# use -1 or undef as default coordinates, not 0, 0
		1533	($x, $y) = ($map->enter_x, $map->enter_y)
		1534	if $x <=0 && $y <= 0;
		1535
		1536	$map->load;
		1537
		1538	$self->activate_recursive;
		1539	$self->enter_map ($map, $x, $y);
		1540	}
		1541
		1542	cf::player->attach (
		1543	on_logout => sub {
		1544	my ($pl) = @_;
		1545
		1546	# abort map switching before logout
		1547	if ($pl->ob->{_link_pos}) {
		1548	cf::sync_job {
		1549	$pl->ob->leave_link
		1550	};
		1551	}
		1552	},
		1553	on_login => sub {
		1554	my ($pl) = @_;
		1555
		1556	# try to abort aborted map switching on player login :)
		1557	# should happen only on crashes
		1558	if ($pl->ob->{_link_pos}) {
		1559	$pl->ob->enter_link;
		1560	cf::async {
		1561	# we need this sleep as the login has a concurrent enter_exit running
		1562	# and this sleep increases chances of the player not ending up in scorn
		1563	Coro::Timer::sleep 1;
		1564	$pl->ob->leave_link;
		1565	};
		1566	}
		1567	},
		1568	);
		1569
		1570	=item $player_object->goto ($path, $x, $y)
		1571
		1572	=cut
		1573
		1574	sub cf::object::player::goto {
		1575	my ($self, $path, $x, $y) = @_;
		1576
		1577	$self->enter_link;
		1578
		1579	(cf::async {
		1580	$path = new cf::path $path;
		1581
		1582	my $map = cf::map::find $path->as_string;
		1583	$map = $map->customise_for ($self) if $map;
		1584
		1585	# warn "entering ", $map->path, " at ($x, $y)\n"
		1586	# if $map;
		1587
		1588	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1589
		1590	$self->leave_link ($map, $x, $y);
		1591	})->prio (1);
		1592	}
		1593
		1594	=item $player_object->enter_exit ($exit_object)
		1595
		1596	=cut
		1597
		1598	sub parse_random_map_params {
		1599	my ($spec) = @_;
		1600
		1601	my $rmp = { # defaults
		1602	xsize => 10,
		1603	ysize => 10,
		1604	};
		1605
		1606	for (split /\n/, $spec) {
		1607	my ($k, $v) = split /\s+/, $_, 2;
		1608
		1609	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1610	}
		1611
		1612	$rmp
		1613	}
		1614
		1615	sub prepare_random_map {
		1616	my ($exit) = @_;
		1617
		1618	# all this does is basically replace the /! path by
		1619	# a new random map path (?random/...) with a seed
		1620	# that depends on the exit object
		1621
		1622	my $rmp = parse_random_map_params $exit->msg;
		1623
		1624	if ($exit->map) {
		1625	$rmp->{region} = $exit->map->region_name;
		1626	$rmp->{origin_map} = $exit->map->path;
		1627	$rmp->{origin_x} = $exit->x;
		1628	$rmp->{origin_y} = $exit->y;
		1629	}
		1630
		1631	$rmp->{random_seed} ||= $exit->random_seed;
		1632
		1633	my $data = cf::to_json $rmp;
		1634	my $md5 = Digest::MD5::md5_hex $data;
		1635
		1636	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1637	aio_write $fh, 0, (length $data), $data, 0;
		1638
		1639	$exit->slaying ("?random/$md5");
		1640	$exit->msg (undef);
		1641	}
		1642	}
		1643
		1644	sub cf::object::player::enter_exit {
805	my ($self, $id, %msg) = @_;	1645	my ($self, $exit) = @_;
806		1646
807	$msg{msgid} = $id;	1647	return unless $self->type == cf::PLAYER;
808		1648
809	$self->send ("ext " . to_json \%msg);	1649	$self->enter_link;
		1650
		1651	(cf::async {
		1652	$self->deactivate_recursive; # just to be sure
		1653	unless (eval {
		1654	prepare_random_map $exit
		1655	if $exit->slaying eq "/!";
		1656
		1657	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1658	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1659
		1660	1;
		1661	}) {
		1662	$self->message ("Something went wrong deep within the crossfire server. "
		1663	. "I'll try to bring you back to the map you were before. "
		1664	. "Please report this to the dungeon master",
		1665	cf::NDI_UNIQUE | cf::NDI_RED);
		1666
		1667	warn "ERROR in enter_exit: $@";
		1668	$self->leave_link;
		1669	}
		1670	})->prio (1);
810	}	1671	}
		1672
		1673	=head3 cf::client
		1674
		1675	=over 4
		1676
		1677	=item $client->send_drawinfo ($text, $flags)
		1678
		1679	Sends a drawinfo packet to the client. Circumvents output buffering so
		1680	should not be used under normal circumstances.
		1681
		1682	=cut
		1683
		1684	sub cf::client::send_drawinfo {
		1685	my ($self, $text, $flags) = @_;
		1686
		1687	utf8::encode $text;
		1688	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1689	}
		1690
		1691
		1692	=item $success = $client->query ($flags, "text", \&cb)
		1693
		1694	Queues a query to the client, calling the given callback with
		1695	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1696	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1697
		1698	Queries can fail, so check the return code. Or don't, as queries will become
		1699	reliable at some point in the future.
		1700
		1701	=cut
		1702
		1703	sub cf::client::query {
		1704	my ($self, $flags, $text, $cb) = @_;
		1705
		1706	return unless $self->state == ST_PLAYING
		1707	|| $self->state == ST_SETUP
		1708	|| $self->state == ST_CUSTOM;
		1709
		1710	$self->state (ST_CUSTOM);
		1711
		1712	utf8::encode $text;
		1713	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1714
		1715	$self->send_packet ($self->{query_queue}[0][0])
		1716	if @{ $self->{query_queue} } == 1;
		1717	}
		1718
		1719	cf::client->attach (
		1720	on_reply => sub {
		1721	my ($ns, $msg) = @_;
		1722
		1723	# this weird shuffling is so that direct followup queries
		1724	# get handled first
		1725	my $queue = delete $ns->{query_queue}
		1726	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1727
		1728	(shift @$queue)->[1]->($msg);
		1729
		1730	push @{ $ns->{query_queue} }, @$queue;
		1731
		1732	if (@{ $ns->{query_queue} } == @$queue) {
		1733	if (@$queue) {
		1734	$ns->send_packet ($ns->{query_queue}[0][0]);
		1735	} else {
		1736	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1737	}
		1738	}
		1739	},
		1740	);
		1741
		1742	=item $client->coro (\&cb)
		1743
		1744	Create a new coroutine, running the specified callback. The coroutine will
		1745	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1746	or loss of connection).
		1747
		1748	=cut
		1749
		1750	sub cf::client::coro {
		1751	my ($self, $cb) = @_;
		1752
		1753	my $coro = &cf::async ($cb);
		1754
		1755	$coro->on_destroy (sub {
		1756	delete $self->{_coro}{$coro+0};
		1757	});
		1758
		1759	$self->{_coro}{$coro+0} = $coro;
		1760
		1761	$coro
		1762	}
		1763
		1764	cf::client->attach (
		1765	on_destroy => sub {
		1766	my ($ns) = @_;
		1767
		1768	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1769	},
		1770	);
811		1771
812	=back	1772	=back
813		1773
814	=cut
815
816	#############################################################################
817		1774
818	=head2 SAFE SCRIPTING	1775	=head2 SAFE SCRIPTING
819		1776
820	Functions that provide a safe environment to compile and execute	1777	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	1778	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	1779	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	1780	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	1781	functions and methods that can be called is greatly reduced.
825		1782
826	=cut	1783	=cut
827		1784
828	our $safe = new Safe "safe";	1785	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	1786	our $safe_hole = new Safe::Hole;
…		…
836		1793
837	=pod	1794	=pod
838		1795
839	The following fucntions and emthods are available within a safe environment:	1796	The following fucntions and emthods are available within a safe environment:
840		1797
841	cf::object contr pay_amount pay_player	1798	cf::object contr pay_amount pay_player map
842	cf::object::player player	1799	cf::object::player player
843	cf::player peaceful	1800	cf::player peaceful
		1801	cf::map trigger
844		1802
845	=cut	1803	=cut
846		1804
847	for (	1805	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	1806	["cf::object" => qw(contr pay_amount pay_player map)],
849	["cf::object::player" => qw(player)],	1807	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	1808	["cf::player" => qw(peaceful)],
		1809	["cf::map" => qw(trigger)],
851	) {	1810	) {
852	no strict 'refs';	1811	no strict 'refs';
853	my ($pkg, @funs) = @$_;	1812	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1813	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	1814	for @funs;
…		…
965		1924
966	Immediately write the database to disk I<if it is dirty>.	1925	Immediately write the database to disk I<if it is dirty>.
967		1926
968	=cut	1927	=cut
969		1928
		1929	our $DB;
		1930
970	{	1931	{
971	my $db;
972	my $path = cf::localdir . "/database.pst";	1932	my $path = cf::localdir . "/database.pst";
973		1933
974	sub db_load() {	1934	sub db_load() {
975	warn "loading database $path\n";#d# remove later
976	$db = stat $path ? Storable::retrieve $path : { };	1935	$DB = stat $path ? Storable::retrieve $path : { };
977	}	1936	}
978		1937
979	my $pid;	1938	my $pid;
980		1939
981	sub db_save() {	1940	sub db_save() {
982	warn "saving database $path\n";#d# remove later
983	waitpid $pid, 0 if $pid;	1941	waitpid $pid, 0 if $pid;
984	if (0 == ($pid = fork)) {	1942	if (0 == ($pid = fork)) {
985	$db->{_meta}{version} = 1;	1943	$DB->{_meta}{version} = 1;
986	Storable::nstore $db, "$path~";	1944	Storable::nstore $DB, "$path~";
987	rename "$path~", $path;	1945	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;	1946	cf::_exit 0 if defined $pid;
989	}	1947	}
990	}	1948	}
991		1949
…		…
994	sub db_sync() {	1952	sub db_sync() {
995	db_save if $dirty;	1953	db_save if $dirty;
996	undef $dirty;	1954	undef $dirty;
997	}	1955	}
998		1956
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	1957	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1000	db_sync;	1958	db_sync;
1001	});	1959	});
1002		1960
1003	sub db_dirty() {	1961	sub db_dirty() {
1004	$dirty = 1;	1962	$dirty = 1;
1005	$idle->start;	1963	$idle->start;
1006	}	1964	}
1007		1965
1008	sub db_get($;$) {	1966	sub db_get($;$) {
1009	@_ >= 2	1967	@_ >= 2
1010	? $db->{$_[0]}{$_[1]}	1968	? $DB->{$_[0]}{$_[1]}
1011	: ($db->{$_[0]} ||= { })	1969	: ($DB->{$_[0]} ||= { })
1012	}	1970	}
1013		1971
1014	sub db_put($$;$) {	1972	sub db_put($$;$) {
1015	if (@_ >= 3) {	1973	if (@_ >= 3) {
1016	$db->{$_[0]}{$_[1]} = $_[2];	1974	$DB->{$_[0]}{$_[1]} = $_[2];
1017	} else {	1975	} else {
1018	$db->{$_[0]} = $_[1];	1976	$DB->{$_[0]} = $_[1];
1019	}	1977	}
1020	db_dirty;	1978	db_dirty;
1021	}	1979	}
1022		1980
1023	attach_global	1981	cf::global->attach (
1024	prio => 10000,	1982	prio => 10000,
1025	on_cleanup => sub {	1983	on_cleanup => sub {
1026	db_sync;	1984	db_sync;
1027	},	1985	},
1028	;	1986	);
1029	}	1987	}
1030		1988
1031	#############################################################################	1989	#############################################################################
1032	# the server's main()	1990	# the server's main()
1033		1991
…		…
1035	open my $fh, "<:utf8", cf::confdir . "/config"	1993	open my $fh, "<:utf8", cf::confdir . "/config"
1036	or return;	1994	or return;
1037		1995
1038	local $/;	1996	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;	1997	*CFG = YAML::Syck::Load <$fh>;
		1998
		1999	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2000
		2001	if (exists $CFG{mlockall}) {
		2002	eval {
		2003	$CFG{mlockall} ? &mlockall : &munlockall
		2004	and die "WARNING: m(un)lockall failed: $!\n";
		2005	};
		2006	warn $@ if $@;
		2007	}
1040	}	2008	}
1041		2009
1042	sub main {	2010	sub main {
		2011	# we must not ever block the main coroutine
		2012	local $Coro::idle = sub {
		2013	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2014	(Coro::unblock_sub {
		2015	Event::one_event;
		2016	})->();
		2017	};
		2018
1043	cfg_load;	2019	cfg_load;
1044	db_load;	2020	db_load;
1045	load_extensions;	2021	load_extensions;
1046	Event::loop;	2022	Event::loop;
1047	}	2023	}
1048		2024
1049	#############################################################################	2025	#############################################################################
1050	# initialisation	2026	# initialisation
1051		2027
1052	sub _perl_reload(&) {	2028	sub reload() {
1053	my ($msg) = @_;	2029	# can/must only be called in main
		2030	if ($Coro::current != $Coro::main) {
		2031	warn "can only reload from main coroutine\n";
		2032	return;
		2033	}
1054		2034
1055	$msg->("reloading...");	2035	warn "reloading...";
		2036
		2037	my $guard = freeze_mainloop;
		2038	cf::emergency_save;
1056		2039
1057	eval {	2040	eval {
		2041	# if anything goes wrong in here, we should simply crash as we already saved
		2042
1058	# cancel all watchers	2043	# cancel all watchers
1059	$_->cancel for Event::all_watchers;	2044	for (Event::all_watchers) {
		2045	$_->cancel if $_->data & WF_AUTOCANCEL;
		2046	}
		2047
		2048	# cancel all extension coros
		2049	$_->cancel for values %EXT_CORO;
		2050	%EXT_CORO = ();
1060		2051
1061	# unload all extensions	2052	# unload all extensions
1062	for (@exts) {	2053	for (@exts) {
1063	$msg->("unloading <$_>");	2054	warn "unloading <$_>";
1064	unload_extension $_;	2055	unload_extension $_;
1065	}	2056	}
1066		2057
1067	# unload all modules loaded from $LIBDIR	2058	# unload all modules loaded from $LIBDIR
1068	while (my ($k, $v) = each %INC) {	2059	while (my ($k, $v) = each %INC) {
1069	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2060	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1070		2061
1071	$msg->("removing <$k>");	2062	warn "removing <$k>";
1072	delete $INC{$k};	2063	delete $INC{$k};
1073		2064
1074	$k =~ s/\.pm$//;	2065	$k =~ s/\.pm$//;
1075	$k =~ s/\//::/g;	2066	$k =~ s/\//::/g;
1076		2067
…		…
1081	Symbol::delete_package $k;	2072	Symbol::delete_package $k;
1082	}	2073	}
1083		2074
1084	# sync database to disk	2075	# sync database to disk
1085	cf::db_sync;	2076	cf::db_sync;
		2077	IO::AIO::flush;
1086		2078
1087	# get rid of safe::, as good as possible	2079	# get rid of safe::, as good as possible
1088	Symbol::delete_package "safe::$_"	2080	Symbol::delete_package "safe::$_"
1089	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2081	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1090		2082
1091	# remove register_script_function callbacks	2083	# remove register_script_function callbacks
1092	# TODO	2084	# TODO
1093		2085
1094	# unload cf.pm "a bit"	2086	# unload cf.pm "a bit"
…		…
1097	# don't, removes xs symbols, too,	2089	# don't, removes xs symbols, too,
1098	# and global variables created in xs	2090	# and global variables created in xs
1099	#Symbol::delete_package __PACKAGE__;	2091	#Symbol::delete_package __PACKAGE__;
1100		2092
1101	# reload cf.pm	2093	# reload cf.pm
1102	$msg->("reloading cf.pm");	2094	warn "reloading cf.pm";
1103	require cf;	2095	require cf;
		2096	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1104		2097
1105	# load config and database again	2098	# load config and database again
1106	cf::cfg_load;	2099	cf::cfg_load;
1107	cf::db_load;	2100	cf::db_load;
1108		2101
1109	# load extensions	2102	# load extensions
1110	$msg->("load extensions");	2103	warn "load extensions";
1111	cf::load_extensions;	2104	cf::load_extensions;
1112		2105
1113	# reattach attachments to objects	2106	# reattach attachments to objects
1114	$msg->("reattach");	2107	warn "reattach";
1115	_global_reattach;	2108	_global_reattach;
1116	};	2109	};
1117	$msg->($@) if $@;
1118		2110
1119	$msg->("reloaded");	2111	if ($@) {
		2112	warn $@;
		2113	warn "error while reloading, exiting.";
		2114	exit 1;
		2115	}
		2116
		2117	warn "reloaded successfully";
1120	};	2118	};
1121		2119
1122	sub perl_reload() {	2120	#############################################################################
1123	_perl_reload {
1124	warn $_[0];
1125	print "$_[0]\n";
1126	};
1127	}
1128		2121
		2122	unless ($LINK_MAP) {
		2123	$LINK_MAP = cf::map::new;
		2124
		2125	$LINK_MAP->width (41);
		2126	$LINK_MAP->height (41);
		2127	$LINK_MAP->alloc;
		2128	$LINK_MAP->path ("{link}");
		2129	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2130	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2131
		2132	# dirty hack because... archetypes are not yet loaded
		2133	Event->timer (
		2134	after => 2,
		2135	cb => sub {
		2136	$_[0]->w->cancel;
		2137
		2138	# provide some exits "home"
		2139	my $exit = cf::object::new "exit";
		2140
		2141	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2142	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2143	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2144
		2145	$LINK_MAP->insert ($exit->clone, 19, 19);
		2146	$LINK_MAP->insert ($exit->clone, 19, 20);
		2147	$LINK_MAP->insert ($exit->clone, 19, 21);
		2148	$LINK_MAP->insert ($exit->clone, 20, 19);
		2149	$LINK_MAP->insert ($exit->clone, 20, 21);
		2150	$LINK_MAP->insert ($exit->clone, 21, 19);
		2151	$LINK_MAP->insert ($exit->clone, 21, 20);
		2152	$LINK_MAP->insert ($exit->clone, 21, 21);
		2153
		2154	$exit->destroy;
		2155	});
		2156
		2157	$LINK_MAP->{deny_save} = 1;
		2158	$LINK_MAP->{deny_reset} = 1;
		2159
		2160	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2161	}
		2162
		2163	register "<global>", __PACKAGE__;
		2164
1129	register_command "perl-reload", 0, sub {	2165	register_command "reload" => sub {
1130	my ($who, $arg) = @_;	2166	my ($who, $arg) = @_;
1131		2167
1132	if ($who->flag (FLAG_WIZ)) {	2168	if ($who->flag (FLAG_WIZ)) {
1133	_perl_reload {	2169	$who->message ("start of reload.");
1134	warn $_[0];	2170	reload;
1135	$who->message ($_[0]);	2171	$who->message ("end of reload.");
1136	};
1137	}	2172	}
1138	};	2173	};
1139		2174
1140	register "<global>", __PACKAGE__;
1141
1142	unshift @INC, $LIBDIR;	2175	unshift @INC, $LIBDIR;
1143		2176
1144	$TICK_WATCHER = Event->timer (	2177	$TICK_WATCHER = Event->timer (
		2178	reentrant => 0,
1145	prio => 1,	2179	prio => 0,
1146	at => $NEXT_TICK || 1,	2180	at => $NEXT_TICK || $TICK,
		2181	data => WF_AUTOCANCEL,
1147	cb => sub {	2182	cb => sub {
1148	cf::server_tick; # one server iteration	2183	cf::server_tick; # one server iteration
1149		2184	$RUNTIME += $TICK;
1150	my $NOW = Event::time;
1151	$NEXT_TICK += $TICK;	2185	$NEXT_TICK += $TICK;
1152		2186
1153	# if we are delayed by four ticks, skip them all	2187	# if we are delayed by four ticks or more, skip them all
1154	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2188	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1155		2189
1156	$TICK_WATCHER->at ($NEXT_TICK);	2190	$TICK_WATCHER->at ($NEXT_TICK);
1157	$TICK_WATCHER->start;	2191	$TICK_WATCHER->start;
1158	},	2192	},
1159	);	2193	);
1160		2194
		2195	IO::AIO::max_poll_time $TICK * 0.2;
		2196
		2197	Event->io (
		2198	fd => IO::AIO::poll_fileno,
		2199	poll => 'r',
		2200	prio => 5,
		2201	data => WF_AUTOCANCEL,
		2202	cb => \&IO::AIO::poll_cb,
		2203	);
		2204
		2205	Event->timer (
		2206	data => WF_AUTOCANCEL,
		2207	after => 0,
		2208	interval => 10,
		2209	cb => sub {
		2210	(Coro::unblock_sub {
		2211	write_runtime
		2212	or warn "ERROR: unable to write runtime file: $!";
		2213	})->();
		2214	},
		2215	);
		2216
		2217	END { cf::emergency_save }
		2218
1161	1	2219	1
1162		2220

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