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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC vs.
Revision 1.141 by root, Fri Jan 5 20:08:53 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
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 (Coro::PRIO_MAX); # 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
32	our $uptime;	49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
33		51
34	$uptime ||= time;	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;
35		76
36	#############################################################################	77	#############################################################################
37		78
38	=head2 GLOBAL VARIABLES	79	=head2 GLOBAL VARIABLES
39		80
40	=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.
41		91
42	=item $cf::LIBDIR	92	=item $cf::LIBDIR
43		93
44	The perl library directory, where extensions and cf-specific modules can	94	The perl library directory, where extensions and cf-specific modules can
45	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.
46		100
47	=item $cf::TICK	101	=item $cf::TICK
48		102
49	The interval between server ticks, in seconds.	103	The interval between server ticks, in seconds.
50		104
…		…
58	=cut	112	=cut
59		113
60	BEGIN {	114	BEGIN {
61	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
63	$msg .= "\n"	119	$msg .= "\n"
64	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
65		121
66	print STDERR "cfperl: $msg";
67	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
68	};	123	};
69	}	124	}
70		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';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		132
73	# 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
74	# within the Safe compartment.	134	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	135	for my $pkg (qw(
		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
76	no strict 'refs';	142	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	144	}
79		145
80	$Event::DIED = sub {	146	$Event::DIED = sub {
…		…
82	};	148	};
83		149
84	my %ext_pkg;	150	my %ext_pkg;
85	my @exts;	151	my @exts;
86	my @hook;	152	my @hook;
87	my %command;
88	my %extcmd;
89		153
90	=head2 UTILITY FUNCTIONS	154	=head2 UTILITY FUNCTIONS
91		155
92	=over 4	156	=over 4
93		157
…		…
115	sub to_json($) {	179	sub to_json($) {
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
117	JSON::Syck::Dump $_[0]	181	JSON::Syck::Dump $_[0]
118	}	182	}
119		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	sub freeze_mainloop {
		227	return unless $TICK_WATCHER->is_active;
		228
		229	my $guard = Coro::guard { $TICK_WATCHER->start };
		230	$TICK_WATCHER->stop;
		231	$guard
		232	}
		233
		234	=item cf::async { BLOCK }
		235
		236	Currently the same as Coro::async_pool, meaning you cannot use
		237	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		238	thing you are allowed to do is call C<prio> on it.
		239
		240	=cut
		241
		242	BEGIN { *async = \&Coro::async_pool }
		243
		244	=item cf::sync_job { BLOCK }
		245
		246	The design of crossfire+ requires that the main coro ($Coro::main) is
		247	always able to handle events or runnable, as crossfire+ is only partly
		248	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		249
		250	If it must be done, put the blocking parts into C<sync_job>. This will run
		251	the given BLOCK in another coroutine while waiting for the result. The
		252	server will be frozen during this time, so the block should either finish
		253	fast or be very important.
		254
		255	=cut
		256
		257	sub sync_job(&) {
		258	my ($job) = @_;
		259
		260	if ($Coro::current == $Coro::main) {
		261	# this is the main coro, too bad, we have to block
		262	# till the operation succeeds, freezing the server :/
		263
		264	# TODO: use suspend/resume instead
		265	# (but this is cancel-safe)
		266	my $freeze_guard = freeze_mainloop;
		267
		268	my $busy = 1;
		269	my @res;
		270
		271	(async {
		272	@res = eval { $job->() };
		273	warn $@ if $@;
		274	undef $busy;
		275	})->prio (Coro::PRIO_MAX);
		276
		277	while ($busy) {
		278	Coro::cede or Event::one_event;
		279	}
		280
		281	wantarray ? @res : $res[0]
		282	} else {
		283	# we are in another coroutine, how wonderful, everything just works
		284
		285	$job->()
		286	}
		287	}
		288
		289	=item $coro = cf::async_ext { BLOCK }
		290
		291	Like async, but this coro is automcatially being canceled when the
		292	extension calling this is being unloaded.
		293
		294	=cut
		295
		296	sub async_ext(&) {
		297	my $cb = shift;
		298
		299	my $coro = &Coro::async ($cb);
		300
		301	$coro->on_destroy (sub {
		302	delete $EXT_CORO{$coro+0};
		303	});
		304	$EXT_CORO{$coro+0} = $coro;
		305
		306	$coro
		307	}
		308
		309	sub write_runtime {
		310	my $runtime = cf::localdir . "/runtime";
		311
		312	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		313	or return;
		314
		315	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		316	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		317	and return;
		318
		319	aio_fsync $fh
		320	and return;
		321
		322	close $fh
		323	or return;
		324
		325	aio_rename "$runtime~", $runtime
		326	and return;
		327
		328	1
		329	}
		330
120	=back	331	=back
121		332
122	=cut	333	=cut
123		334
124	#############################################################################	335	#############################################################################
125		336
126	=head2 EVENTS AND OBJECT ATTACHMENTS	337	package cf::path;
		338
		339	sub new {
		340	my ($class, $path, $base) = @_;
		341
		342	$path = $path->as_string if ref $path;
		343
		344	my $self = bless { }, $class;
		345
		346	# {... are special paths that are not touched
		347	# ?xxx/... are special absolute paths
		348	# ?random/... random maps
		349	# /! non-realised random map exit
		350	# /... normal maps
		351	# ~/... per-player maps without a specific player (DO NOT USE)
		352	# ~user/... per-player map of a specific user
		353
		354	if ($path =~ /^{/) {
		355	# fine as it is
		356	} elsif ($path =~ s{^\?random/}{}) {
		357	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		358	$self->{random} = cf::from_json $data;
		359	} else {
		360	if ($path =~ s{^~([^/]+)?}{}) {
		361	$self->{user_rel} = 1;
		362
		363	if (defined $1) {
		364	$self->{user} = $1;
		365	} elsif ($base =~ m{^~([^/]+)/}) {
		366	$self->{user} = $1;
		367	} else {
		368	warn "cannot resolve user-relative path without user <$path,$base>\n";
		369	}
		370	} elsif ($path =~ /^\//) {
		371	# already absolute
		372	} else {
		373	$base =~ s{[^/]+/?$}{};
		374	return $class->new ("$base/$path");
		375	}
		376
		377	for ($path) {
		378	redo if s{/\.?/}{/};
		379	redo if s{/[^/]+/\.\./}{/};
		380	}
		381	}
		382
		383	$self->{path} = $path;
		384
		385	$self
		386	}
		387
		388	# the name / primary key / in-game path
		389	sub as_string {
		390	my ($self) = @_;
		391
		392	$self->{user_rel} ? "~$self->{user}$self->{path}"
		393	: $self->{random} ? "?random/$self->{path}"
		394	: $self->{path}
		395	}
		396
		397	# the displayed name, this is a one way mapping
		398	sub visible_name {
		399	my ($self) = @_;
		400
		401	# if (my $rmp = $self->{random}) {
		402	# # todo: be more intelligent about this
		403	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		404	# } else {
		405	$self->as_string
		406	# }
		407	}
		408
		409	# escape the /'s in the path
		410	sub _escaped_path {
		411	# ∕ is U+2215
		412	(my $path = $_[0]{path}) =~ s/\//∕/g;
		413	$path
		414	}
		415
		416	# the original (read-only) location
		417	sub load_path {
		418	my ($self) = @_;
		419
		420	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		421	}
		422
		423	# the temporary/swap location
		424	sub save_path {
		425	my ($self) = @_;
		426
		427	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		428	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		429	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		430	}
		431
		432	# the unique path, might be eq to save_path
		433	sub uniq_path {
		434	my ($self) = @_;
		435
		436	$self->{user_rel} || $self->{random}
		437	? undef
		438	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		439	}
		440
		441	# return random map parameters, or undef
		442	sub random_map_params {
		443	my ($self) = @_;
		444
		445	$self->{random}
		446	}
		447
		448	# this is somewhat ugly, but style maps do need special treatment
		449	sub is_style_map {
		450	$_[0]{path} =~ m{^/styles/}
		451	}
		452
		453	package cf;
		454
		455	#############################################################################
		456
		457	=head2 ATTACHABLE OBJECTS
		458
		459	Many objects in crossfire are so-called attachable objects. That means you can
		460	attach callbacks/event handlers (a collection of which is called an "attachment")
		461	to it. All such attachable objects support the following methods.
		462
		463	In the following description, CLASS can be any of C<global>, C<object>
		464	C<player>, C<client> or C<map> (i.e. the attachable objects in
		465	crossfire+).
127		466
128	=over 4	467	=over 4
129		468
130	=item $object->attach ($attachment, key => $value...)
131
132	=item $object->detach ($attachment)
133
134	Attach/detach a pre-registered attachment to an object.
135
136	=item $player->attach ($attachment, key => $value...)
137
138	=item $player->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to a player.
141
142	=item $map->attach ($attachment, key => $value...)	469	=item $attachable->attach ($attachment, key => $value...)
143		470
144	=item $map->detach ($attachment)	471	=item $attachable->detach ($attachment)
145		472
146	Attach/detach a pre-registered attachment to a map.	473	Attach/detach a pre-registered attachment to a specific object and give it
		474	the specified key/value pairs as arguments.
147		475
148	=item $bool = $object->attached ($name)	476	Example, attach a minesweeper attachment to the given object, making it a
		477	10x10 minesweeper game:
149		478
150	=item $bool = $player->attached ($name)	479	$obj->attach (minesweeper => width => 10, height => 10);
151		480
152	=item $bool = $map->attached ($name)	481	=item $bool = $attachable->attached ($name)
153		482
154	Checks wether the named attachment is currently attached to the object.	483	Checks wether the named attachment is currently attached to the object.
155		484
156	=item cf::attach_global ...	485	=item cf::CLASS->attach ...
157		486
158	Attach handlers for global events.	487	=item cf::CLASS->detach ...
159		488
160	This and all following C<attach_*>-functions expect any number of the	489	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	490	CLASS. See the next function for an explanation of its arguments.
		491
		492	You can attach to global events by using the C<cf::global> class.
		493
		494	Example, log all player logins:
		495
		496	cf::player->attach (
		497	on_login => sub {
		498	my ($pl) = @_;
		499	...
		500	},
		501	);
		502
		503	Example, attach to the jeweler skill:
		504
		505	cf::object->attach (
		506	type => cf::SKILL,
		507	subtype => cf::SK_JEWELER,
		508	on_use_skill => sub {
		509	my ($sk, $ob, $part, $dir, $msg) = @_;
		510	...
		511	},
		512	);
		513
		514	=item cf::CLASS::attachment $name, ...
		515
		516	Register an attachment by C<$name> through which attachable objects of the
		517	given CLASS can refer to this attachment.
		518
		519	Some classes such as crossfire maps and objects can specify attachments
		520	that are attached at load/instantiate time, thus the need for a name.
		521
		522	These calls expect any number of the following handler/hook descriptions:
162		523
163	=over 4	524	=over 4
164		525
165	=item prio => $number	526	=item prio => $number
166		527
…		…
168	by another C<prio> setting). Lower priority handlers get executed	529	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	530	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	531	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	532	unless you know what you are doing.
172		533
		534	=item type => $type
		535
		536	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		537	given type of objects only (the additional parameter C<subtype> can be
		538	used to further limit to the given subtype).
		539
173	=item on_I<event> => \&cb	540	=item on_I<event> => \&cb
174		541
175	Call the given code reference whenever the named event happens (event is	542	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	543	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	544	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	553	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	554	object/class are recognised.
188		555
189	=back	556	=back
190		557
191	=item cf::attach_to_type $object_type, $subtype, ...	558	Example, define an attachment called "sockpuppet" that calls the given
		559	event handler when a monster attacks:
192		560
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	561	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	562	on_skill_attack => sub {
195	type.	563	my ($self, $victim) = @_;
196		564	...
197	=item cf::attach_to_objects ...
198
199	Attach handlers to all objects. Do not use this except for debugging or
200	very rare events, as handlers are (obviously) called for I<all> objects in
201	the game.
202
203	=item cf::attach_to_players ...
204
205	Attach handlers to all players.
206
207	=item cf::attach_to_maps ...
208
209	Attach handlers to all maps.
210
211	=item cf:register_attachment $name, ...
212
213	Register an attachment by name through which objects can refer to this
214	attachment.
215
216	=item cf:register_player_attachment $name, ...
217
218	Register an attachment by name through which players can refer to this
219	attachment.
220
221	=item cf:register_map_attachment $name, ...
222
223	Register an attachment by name through which maps can refer to this
224	attachment.
225
226	=cut
227
228	# the following variables are defined in .xs and must not be re-created
229	our @CB_GLOBAL = (); # registry for all global events
230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
231	our @CB_PLAYER = ();
232	our @CB_TYPE = (); # registry for type (cf-object class) based events
233	our @CB_MAP = ();
234
235	my %attachment;
236
237	sub _attach_cb($\%$$$) {
238	my ($registry, $undo, $event, $prio, $cb) = @_;
239
240	use sort 'stable';
241
242	$cb = [$prio, $cb];
243
244	@{$registry->[$event]} = sort
245	{ $a->[0] cmp $b->[0] }
246	@{$registry->[$event] || []}, $cb;
247
248	push @{$undo->{cb}}, [$event, $cb];
249	}
250
251	# attach handles attaching event callbacks
252	# the only thing the caller has to do is pass the correct
253	# registry (== where the callback attaches to).
254	sub _attach(\@$@) {
255	my ($registry, $klass, @arg) = @_;
256
257	my $prio = 0;
258
259	my %undo = (
260	registry => $registry,
261	cb => [],
262	);
263
264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
265
266	while (@arg) {
267	my $type = shift @arg;
268
269	if ($type eq "prio") {
270	$prio = shift @arg;
271
272	} elsif ($type eq "package") {
273	my $pkg = shift @arg;
274
275	while (my ($name, $id) = each %cb_id) {
276	if (my $cb = $pkg->can ($name)) {
277	_attach_cb $registry, %undo, $id, $prio, $cb;
278	}
279	}	565	}
280
281	} elsif (exists $cb_id{$type}) {
282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
283
284	} elsif (ref $type) {
285	warn "attaching objects not supported, ignoring.\n";
286
287	} else {
288	shift @arg;
289	warn "attach argument '$type' not supported, ignoring.\n";
290	}
291	}
292
293	\%undo
294	}
295
296	sub _attach_attachment {
297	my ($obj, $name, %arg) = @_;
298
299	return if exists $obj->{_attachment}{$name};
300
301	my $res;
302
303	if (my $attach = $attachment{$name}) {
304	my $registry = $obj->registry;
305
306	for (@$attach) {
307	my ($klass, @attach) = @$_;
308	$res = _attach @$registry, $klass, @attach;
309	}
310
311	$obj->{$name} = \%arg;
312	} else {
313	warn "object uses attachment '$name' that is not available, postponing.\n";
314	}
315
316	$obj->{_attachment}{$name} = undef;
317
318	$res->{attachment} = $name;
319	$res
320	}
321
322	*cf::object::attach =
323	*cf::player::attach =
324	*cf::map::attach = sub {
325	my ($obj, $name, %arg) = @_;
326
327	_attach_attachment $obj, $name, %arg;
328	};
329
330	# all those should be optimised
331	*cf::object::detach =
332	*cf::player::detach =
333	*cf::map::detach = sub {
334	my ($obj, $name) = @_;
335
336	delete $obj->{_attachment}{$name};
337	reattach ($obj);
338	};
339
340	*cf::object::attached =
341	*cf::player::attached =
342	*cf::map::attached = sub {
343	my ($obj, $name) = @_;
344
345	exists $obj->{_attachment}{$name}
346	};
347
348	sub attach_global {
349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
350	}
351
352	sub attach_to_type {
353	my $type = shift;
354	my $subtype = shift;
355
356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_objects {
360	_attach @CB_OBJECT, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_players {
364	_attach @CB_PLAYER, KLASS_PLAYER, @_
365	}
366
367	sub attach_to_maps {
368	_attach @CB_MAP, KLASS_MAP, @_
369	}
370
371	sub register_attachment {
372	my $name = shift;
373
374	$attachment{$name} = [[KLASS_OBJECT, @_]];
375	}
376
377	sub register_player_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_PLAYER, @_]];
381	}
382
383	sub register_map_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_MAP, @_]];
387	}
388
389	our $override;
390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
391
392	sub override {
393	$override = 1;
394	@invoke_results = ();
395	}
396
397	sub do_invoke {
398	my $event = shift;
399	my $callbacks = shift;
400
401	@invoke_results = ();
402
403	local $override;
404
405	for (@$callbacks) {
406	eval { &{$_->[1]} };
407
408	if ($@) {
409	warn "$@";
410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
411	override;
412	}
413
414	return 1 if $override;
415	}
416
417	0	566	}
418	}
419		567
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	568	=item $attachable->valid
421
422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
423
424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
425
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.
429
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL CORE OBJECTS
441
442	=over 4
443
444	=item $object->valid, $player->valid, $map->valid
445		569
446	Just because you have a perl object does not mean that the corresponding	570	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	571	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	572	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	573	can be used to test for existence of the C object part without causing an
450	exception.	574	exception.
451		575
		576	=cut
		577
		578	# the following variables are defined in .xs and must not be re-created
		579	our @CB_GLOBAL = (); # registry for all global events
		580	our @CB_ATTACHABLE = (); # registry for all attachables
		581	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		582	our @CB_PLAYER = ();
		583	our @CB_CLIENT = ();
		584	our @CB_TYPE = (); # registry for type (cf-object class) based events
		585	our @CB_MAP = ();
		586
		587	my %attachment;
		588
		589	sub _attach_cb($$$$) {
		590	my ($registry, $event, $prio, $cb) = @_;
		591
		592	use sort 'stable';
		593
		594	$cb = [$prio, $cb];
		595
		596	@{$registry->[$event]} = sort
		597	{ $a->[0] cmp $b->[0] }
		598	@{$registry->[$event] || []}, $cb;
		599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		603
		604	# attach handles attaching event callbacks
		605	# the only thing the caller has to do is pass the correct
		606	# registry (== where the callback attaches to).
		607	sub _attach {
		608	my ($registry, $klass, @arg) = @_;
		609
		610	my $object_type;
		611	my $prio = 0;
		612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
		619	while (@arg) {
		620	my $type = shift @arg;
		621
		622	if ($type eq "prio") {
		623	$prio = shift @arg;
		624
		625	} elsif ($type eq "type") {
		626	$object_type = shift @arg;
		627	$registry = $CB_TYPE[$object_type] ||= [];
		628
		629	} elsif ($type eq "subtype") {
		630	defined $object_type or Carp::croak "subtype specified without type";
		631	my $object_subtype = shift @arg;
		632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		633
		634	} elsif ($type eq "package") {
		635	my $pkg = shift @arg;
		636
		637	while (my ($name, $id) = each %cb_id) {
		638	if (my $cb = $pkg->can ($name)) {
		639	_attach_cb $registry, $id, $prio, $cb;
		640	}
		641	}
		642
		643	} elsif (exists $cb_id{$type}) {
		644	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		645
		646	} elsif (ref $type) {
		647	warn "attaching objects not supported, ignoring.\n";
		648
		649	} else {
		650	shift @arg;
		651	warn "attach argument '$type' not supported, ignoring.\n";
		652	}
		653	}
		654	}
		655
		656	sub _object_attach {
		657	my ($obj, $name, %arg) = @_;
		658
		659	return if exists $obj->{_attachment}{$name};
		660
		661	if (my $attach = $attachment{$name}) {
		662	my $registry = $obj->registry;
		663
		664	for (@$attach) {
		665	my ($klass, @attach) = @$_;
		666	_attach $registry, $klass, @attach;
		667	}
		668
		669	$obj->{$name} = \%arg;
		670	} else {
		671	warn "object uses attachment '$name' that is not available, postponing.\n";
		672	}
		673
		674	$obj->{_attachment}{$name} = undef;
		675	}
		676
		677	sub cf::attachable::attach {
		678	if (ref $_[0]) {
		679	_object_attach @_;
		680	} else {
		681	_attach shift->_attach_registry, @_;
		682	}
		683	};
		684
		685	# all those should be optimised
		686	sub cf::attachable::detach {
		687	my ($obj, $name) = @_;
		688
		689	if (ref $obj) {
		690	delete $obj->{_attachment}{$name};
		691	reattach ($obj);
		692	} else {
		693	Carp::croak "cannot, currently, detach class attachments";
		694	}
		695	};
		696
		697	sub cf::attachable::attached {
		698	my ($obj, $name) = @_;
		699
		700	exists $obj->{_attachment}{$name}
		701	}
		702
		703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		704	eval "#line " . __LINE__ . " 'cf.pm'
		705	sub cf::\L$klass\E::_attach_registry {
		706	(\\\@CB_$klass, KLASS_$klass)
		707	}
		708
		709	sub cf::\L$klass\E::attachment {
		710	my \$name = shift;
		711
		712	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		713	}
		714	";
		715	die if $@;
		716	}
		717
		718	our $override;
		719	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		720
		721	sub override {
		722	$override = 1;
		723	@invoke_results = ();
		724	}
		725
		726	sub do_invoke {
		727	my $event = shift;
		728	my $callbacks = shift;
		729
		730	@invoke_results = ();
		731
		732	local $override;
		733
		734	for (@$callbacks) {
		735	eval { &{$_->[1]} };
		736
		737	if ($@) {
		738	warn "$@";
		739	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		740	override;
		741	}
		742
		743	return 1 if $override;
		744	}
		745
		746	0
		747	}
		748
		749	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		750
		751	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		752
		753	Generate an object-specific event with the given arguments.
		754
		755	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		756	removed in future versions), and there is no public API to access override
		757	results (if you must, access C<@cf::invoke_results> directly).
		758
452	=back	759	=back
453		760
454	=cut	761	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		762
460	#############################################################################	763	#############################################################################
461	# object support	764	# object support
462		765
463	sub instantiate {
464	my ($obj, $data) = @_;
465
466	$data = from_json $data;
467
468	for (@$data) {
469	my ($name, $args) = @$_;
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}
474
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	768	my ($obj) = @_;
		769
478	my $registry = $obj->registry;	770	my $registry = $obj->registry;
479		771
480	@$registry = ();	772	@$registry = ();
481		773
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	774	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		775
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	776	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	777	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	778	for (@$attach) {
487	my ($klass, @attach) = @$_;	779	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	780	_attach $registry, $klass, @attach;
489	}	781	}
490	} else {	782	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	783	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	784	}
493	}	785	}
494	}	786	}
495		787
496	sub object_freezer_save {	788	cf::attachable->attach (
497	my ($filename, $rdata, $objs) = @_;
498
499	if (length $$rdata) {
500	warn sprintf "saving %s (%d,%d)\n",
501	$filename, length $$rdata, scalar @$objs;
502
503	if (open my $fh, ">:raw", "$filename~") {
504	chmod SAVE_MODE, $fh;
505	syswrite $fh, $$rdata;
506	close $fh;
507
508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
509	chmod SAVE_MODE, $fh;
510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
511	close $fh;
512	rename "$filename.pst~", "$filename.pst";
513	} else {
514	unlink "$filename.pst";
515	}
516
517	rename "$filename~", $filename;
518	} else {
519	warn "FATAL: $filename~: $!\n";
520	}
521	} else {
522	unlink $filename;
523	unlink "$filename.pst";
524	}
525	}
526
527	sub object_thawer_load {
528	my ($filename) = @_;
529
530	local $/;
531
532	my $av;
533
534	#TODO: use sysread etc.
535	if (open my $data, "<:raw:perlio", $filename) {
536	$data = <$data>;
537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
538	$av = eval { (Storable::thaw <$pst>)->{objs} };
539	}
540	return ($data, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	789	prio => -1000000,
		790	on_instantiate => sub {
		791	my ($obj, $data) = @_;
		792
		793	$data = from_json $data;
		794
		795	for (@$data) {
		796	my ($name, $args) = @$_;
		797
		798	$obj->attach ($name, %{$args || {} });
		799	}
		800	},
		801	on_reattach => \&reattach,
548	on_clone => sub {	802	on_clone => sub {
549	my ($src, $dst) = @_;	803	my ($src, $dst) = @_;
550		804
551	@{$dst->registry} = @{$src->registry};	805	@{$dst->registry} = @{$src->registry};
552		806
553	%$dst = %$src;	807	%$dst = %$src;
554		808
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	809	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	810	if exists $src->{_attachment};
557	},	811	},
558	;	812	);
		813
		814	sub object_freezer_save {
		815	my ($filename, $rdata, $objs) = @_;
		816
		817	sync_job {
		818	if (length $$rdata) {
		819	warn sprintf "saving %s (%d,%d)\n",
		820	$filename, length $$rdata, scalar @$objs;
		821
		822	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		823	chmod SAVE_MODE, $fh;
		824	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		825	aio_fsync $fh;
		826	close $fh;
		827
		828	if (@$objs) {
		829	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		830	chmod SAVE_MODE, $fh;
		831	my $data = Storable::nfreeze { version => 1, objs => $objs };
		832	aio_write $fh, 0, (length $data), $data, 0;
		833	aio_fsync $fh;
		834	close $fh;
		835	aio_rename "$filename.pst~", "$filename.pst";
		836	}
		837	} else {
		838	aio_unlink "$filename.pst";
		839	}
		840
		841	aio_rename "$filename~", $filename;
		842	} else {
		843	warn "FATAL: $filename~: $!\n";
		844	}
		845	} else {
		846	aio_unlink $filename;
		847	aio_unlink "$filename.pst";
		848	}
		849	}
		850	}
		851
		852	sub object_freezer_as_string {
		853	my ($rdata, $objs) = @_;
		854
		855	use Data::Dumper;
		856
		857	$$rdata . Dumper $objs
		858	}
		859
		860	sub object_thawer_load {
		861	my ($filename) = @_;
		862
		863	my ($data, $av);
		864
		865	(aio_load $filename, $data) >= 0
		866	or return;
		867
		868	unless (aio_stat "$filename.pst") {
		869	(aio_load "$filename.pst", $av) >= 0
		870	or return;
		871	$av = eval { (Storable::thaw $av)->{objs} };
		872	}
		873
		874	warn sprintf "loading %s (%d)\n",
		875	$filename, length $data, scalar @{$av || []};#d#
		876	return ($data, $av);
		877	}
559		878
560	#############################################################################	879	#############################################################################
561	# old plug-in events	880	# command handling &c
562		881
563	sub inject_event {	882	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		883
567	my $cb = $hook[$event_code]{$extension}	884	Register a callback for execution when the client sends the user command
568	or return;	885	$name.
569		886
570	&$cb	887	=cut
571	}
572
573	sub inject_global_event {
574	my $event = shift;
575
576	my $cb = $hook[$event]
577	or return;
578
579	List::Util::max map &$_, values %$cb
580	}
581
582	sub inject_command {
583	my ($name, $obj, $params) = @_;
584
585	for my $cmd (@{ $command{$name} }) {
586	$cmd->[1]->($obj, $params);
587	}
588
589	-1
590	}
591		888
592	sub register_command {	889	sub register_command {
593	my ($name, $time, $cb) = @_;	890	my ($name, $cb) = @_;
594		891
595	my $caller = caller;	892	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	893	#warn "registering command '$name/$time' to '$caller'";
597		894
598	push @{ $command{$name} }, [$time, $cb, $caller];	895	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	896	}
		897
		898	=item cf::register_extcmd $name => \&callback($pl,$packet);
		899
		900	Register a callbackf ro execution when the client sends an extcmd packet.
		901
		902	If the callback returns something, it is sent back as if reply was being
		903	called.
		904
		905	=cut
601		906
602	sub register_extcmd {	907	sub register_extcmd {
603	my ($name, $cb) = @_;	908	my ($name, $cb) = @_;
604		909
605	my $caller = caller;	910	my $caller = caller;
606	#warn "registering extcmd '$name' to '$caller'";	911	#warn "registering extcmd '$name' to '$caller'";
607		912
608	$extcmd{$name} = [$cb, $caller];	913	$EXTCMD{$name} = [$cb, $caller];
609	}	914	}
		915
		916	cf::player->attach (
		917	on_command => sub {
		918	my ($pl, $name, $params) = @_;
		919
		920	my $cb = $COMMAND{$name}
		921	or return;
		922
		923	for my $cmd (@$cb) {
		924	$cmd->[1]->($pl->ob, $params);
		925	}
		926
		927	cf::override;
		928	},
		929	on_extcmd => sub {
		930	my ($pl, $buf) = @_;
		931
		932	my $msg = eval { from_json $buf };
		933
		934	if (ref $msg) {
		935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		936	if (my %reply = $cb->[0]->($pl, $msg)) {
		937	$pl->ext_reply ($msg->{msgid}, %reply);
		938	}
		939	}
		940	} else {
		941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		942	}
		943
		944	cf::override;
		945	},
		946	);
610		947
611	sub register {	948	sub register {
612	my ($base, $pkg) = @_;	949	my ($base, $pkg) = @_;
613		950
614	#TODO	951	#TODO
…		…
633	. "#line 1 \"$path\"\n{\n"	970	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })	971	. (do { local $/; <$fh> })
635	. "\n};\n1";	972	. "\n};\n1";
636		973
637	eval $source	974	eval $source
638	or die "$path: $@";	975	or die $@ ? "$path: $@\n"
		976	: "extension disabled.\n";
639		977
640	push @exts, $pkg;	978	push @exts, $pkg;
641	$ext_pkg{$base} = $pkg;	979	$ext_pkg{$base} = $pkg;
642		980
643	# no strict 'refs';	981	# no strict 'refs';
…		…
656	# for my $idx (0 .. $#PLUGIN_EVENT) {	994	# for my $idx (0 .. $#PLUGIN_EVENT) {
657	# delete $hook[$idx]{$pkg};	995	# delete $hook[$idx]{$pkg};
658	# }	996	# }
659		997
660	# remove commands	998	# remove commands
661	for my $name (keys %command) {	999	for my $name (keys %COMMAND) {
662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1000	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
663		1001
664	if (@cb) {	1002	if (@cb) {
665	$command{$name} = \@cb;	1003	$COMMAND{$name} = \@cb;
666	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
667	} else {	1004	} else {
668	delete $command{$name};
669	delete $COMMAND{"$name\000"};	1005	delete $COMMAND{$name};
670	}	1006	}
671	}	1007	}
672		1008
673	# remove extcmds	1009	# remove extcmds
674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1010	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
675	delete $extcmd{$name};	1011	delete $EXTCMD{$name};
676	}	1012	}
677		1013
678	if (my $cb = $pkg->can ("unload")) {	1014	if (my $cb = $pkg->can ("unload")) {
679	eval {	1015	eval {
680	$cb->($pkg);	1016	$cb->($pkg);
…		…
684		1020
685	Symbol::delete_package $pkg;	1021	Symbol::delete_package $pkg;
686	}	1022	}
687		1023
688	sub load_extensions {	1024	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {	1025	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;	1026	next unless -r $ext;
693	eval {	1027	eval {
694	load_extension $ext;	1028	load_extension $ext;
695	1	1029	1
696	} or warn "$ext not loaded: $@";	1030	} or warn "$ext not loaded: $@";
697	}	1031	}
698	}	1032	}
699		1033
700	#############################################################################	1034	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703
704	attach_to_players
705	on_extcmd => sub {
706	my ($pl, $buf) = @_;
707
708	my $msg = eval { from_json $buf };
709
710	if (ref $msg) {
711	if (my $cb = $extcmd{$msg->{msgtype}}) {
712	if (my %reply = $cb->[0]->($pl, $msg)) {
713	$pl->ext_reply ($msg->{msgid}, %reply);
714	}
715	}
716	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
718	}
719
720	cf::override;
721	},
722	;
723
724	#############################################################################
725	# load/save/clean perl data associated with a map	1035	# load/save/clean perl data associated with a map
726		1036
727	*cf::mapsupport::on_clean = sub {	1037	*cf::mapsupport::on_clean = sub {
728	my ($map) = @_;	1038	my ($map) = @_;
729		1039
…		…
731	defined $path or return;	1041	defined $path or return;
732		1042
733	unlink "$path.pst";	1043	unlink "$path.pst";
734	};	1044	};
735		1045
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1046	cf::map->attach (prio => -10000, package => cf::mapsupport::);
737		1047
738	#############################################################################	1048	#############################################################################
739	# load/save perl data associated with player->ob objects	1049	# load/save perl data associated with player->ob objects
740		1050
741	sub all_objects(@) {	1051	sub all_objects(@) {
742	@_, map all_objects ($_->inv), @_	1052	@_, map all_objects ($_->inv), @_
743	}	1053	}
744		1054
745	# TODO: compatibility cruft, remove when no longer needed	1055	# TODO: compatibility cruft, remove when no longer needed
746	attach_to_players	1056	cf::player->attach (
747	on_load => sub {	1057	on_load => sub {
748	my ($pl, $path) = @_;	1058	my ($pl, $path) = @_;
749		1059
750	for my $o (all_objects $pl->ob) {	1060	for my $o (all_objects $pl->ob) {
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1061	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
753		1063
754	%$o = %{ Storable::thaw pack "H*", $value };	1064	%$o = %{ Storable::thaw pack "H*", $value };
755	}	1065	}
756	}	1066	}
757	},	1067	},
758	;	1068	);
759		1069
760	#############################################################################	1070	#############################################################################
761		1071
762	=head2 CORE EXTENSIONS	1072	=head2 CORE EXTENSIONS
763		1073
764	Functions and methods that extend core crossfire objects.	1074	Functions and methods that extend core crossfire objects.
		1075
		1076	=head3 cf::player
765		1077
766	=over 4	1078	=over 4
767		1079
768	=item cf::player::exists $login	1080	=item cf::player::exists $login
769		1081
…		…
774	sub cf::player::exists($) {	1086	sub cf::player::exists($) {
775	cf::player::find $_[0]	1087	cf::player::find $_[0]
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1088	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
777	}	1089	}
778		1090
		1091	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1092
		1093	Sends an ext reply to the player.
		1094
		1095	=cut
		1096
		1097	sub cf::player::ext_reply($$$%) {
		1098	my ($self, $id, %msg) = @_;
		1099
		1100	$msg{msgid} = $id;
		1101
		1102	$self->send ("ext " . to_json \%msg);
		1103	}
		1104
		1105	=back
		1106
		1107
		1108	=head3 cf::map
		1109
		1110	=over 4
		1111
		1112	=cut
		1113
		1114	package cf::map;
		1115
		1116	use Fcntl;
		1117	use Coro::AIO;
		1118
		1119	our $MAX_RESET = 3600;
		1120	our $DEFAULT_RESET = 3000;
		1121
		1122	sub generate_random_map {
		1123	my ($path, $rmp) = @_;
		1124
		1125	# mit "rum" bekleckern, nicht
		1126	cf::map::_create_random_map
		1127	$path,
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region})
		1139	}
		1140
		1141	# and all this just because we cannot iterate over
		1142	# all maps in C++...
		1143	sub change_all_map_light {
		1144	my ($change) = @_;
		1145
		1146	$_->change_map_light ($change)
		1147	for grep $_->outdoor, values %cf::MAP;
		1148	}
		1149
		1150	sub try_load_header($) {
		1151	my ($path) = @_;
		1152
		1153	utf8::encode $path;
		1154	aio_open $path, O_RDONLY, 0
		1155	or return;
		1156
		1157	my $map = cf::map::new
		1158	or return;
		1159
		1160	# for better error messages only, will be overwritten
		1161	$map->path ($path);
		1162
		1163	$map->load_header ($path)
		1164	or return;
		1165
		1166	$map->{load_path} = $path;
		1167
		1168	$map
		1169	}
		1170
		1171	sub find;
		1172	sub find {
		1173	my ($path, $origin) = @_;
		1174
		1175	#warn "find<$path,$origin>\n";#d#
		1176
		1177	$path = new cf::path $path, $origin && $origin->path;
		1178	my $key = $path->as_string;
		1179
		1180	cf::lock_wait "map_find:$key";
		1181
		1182	$cf::MAP{$key} || do {
		1183	my $guard = cf::lock_acquire "map_find:$key";
		1184
		1185	# do it the slow way
		1186	my $map = try_load_header $path->save_path;
		1187
		1188	Coro::cede;
		1189
		1190	if ($map) {
		1191	$map->last_access ((delete $map->{last_access})
		1192	|| $cf::RUNTIME); #d#
		1193	# safety
		1194	$map->{instantiate_time} = $cf::RUNTIME
		1195	if $map->{instantiate_time} > $cf::RUNTIME;
		1196	} else {
		1197	if (my $rmp = $path->random_map_params) {
		1198	$map = generate_random_map $key, $rmp;
		1199	} else {
		1200	$map = try_load_header $path->load_path;
		1201	}
		1202
		1203	$map or return;
		1204
		1205	$map->{load_original} = 1;
		1206	$map->{instantiate_time} = $cf::RUNTIME;
		1207	$map->last_access ($cf::RUNTIME);
		1208	$map->instantiate;
		1209
		1210	# per-player maps become, after loading, normal maps
		1211	$map->per_player (0) if $path->{user_rel};
		1212	}
		1213
		1214	$map->path ($key);
		1215	$map->{path} = $path;
		1216	$map->{last_save} = $cf::RUNTIME;
		1217
		1218	Coro::cede;
		1219
		1220	if ($map->should_reset) {
		1221	$map->reset;
		1222	undef $guard;
		1223	$map = find $path
		1224	or return;
		1225	}
		1226
		1227	$cf::MAP{$key} = $map
		1228	}
		1229	}
		1230
		1231	sub load {
		1232	my ($self) = @_;
		1233
		1234	my $path = $self->{path};
		1235	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1236
		1237	return if $self->in_memory != cf::MAP_SWAPPED;
		1238
		1239	$self->in_memory (cf::MAP_LOADING);
		1240
		1241	$self->alloc;
		1242	$self->load_objects ($self->{load_path}, 1)
		1243	or return;
		1244
		1245	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1246	if delete $self->{load_original};
		1247
		1248	if (my $uniq = $path->uniq_path) {
		1249	utf8::encode $uniq;
		1250	if (aio_open $uniq, O_RDONLY, 0) {
		1251	$self->clear_unique_items;
		1252	$self->load_objects ($uniq, 0);
		1253	}
		1254	}
		1255
		1256	Coro::cede;
		1257
		1258	# now do the right thing for maps
		1259	$self->link_multipart_objects;
		1260
		1261	if ($self->{path}->is_style_map) {
		1262	$self->{deny_save} = 1;
		1263	$self->{deny_reset} = 1;
		1264	} else {
		1265	$self->fix_auto_apply;
		1266	$self->decay_objects;
		1267	$self->update_buttons;
		1268	$self->set_darkness_map;
		1269	$self->difficulty ($self->estimate_difficulty)
		1270	unless $self->difficulty;
		1271	$self->activate;
		1272	}
		1273
		1274	Coro::cede;
		1275
		1276	$self->in_memory (cf::MAP_IN_MEMORY);
		1277	}
		1278
		1279	sub find_sync {
		1280	my ($path, $origin) = @_;
		1281
		1282	cf::sync_job { cf::map::find $path, $origin }
		1283	}
		1284
		1285	sub do_load_sync {
		1286	my ($map) = @_;
		1287
		1288	cf::sync_job { $map->load };
		1289	}
		1290
		1291	sub save {
		1292	my ($self) = @_;
		1293
		1294	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1295
		1296	$self->{last_save} = $cf::RUNTIME;
		1297
		1298	return unless $self->dirty;
		1299
		1300	my $save = $self->{path}->save_path; utf8::encode $save;
		1301	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1302
		1303	$self->{load_path} = $save;
		1304
		1305	return if $self->{deny_save};
		1306
		1307	local $self->{last_access} = $self->last_access;#d#
		1308
		1309	if ($uniq) {
		1310	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1311	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1312	} else {
		1313	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1314	}
		1315	}
		1316
		1317	sub swap_out {
		1318	my ($self) = @_;
		1319
		1320	# save first because save cedes
		1321	$self->save;
		1322
		1323	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1324
		1325	return if $self->players;
		1326	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1327	return if $self->{deny_save};
		1328
		1329	$self->clear;
		1330	$self->in_memory (cf::MAP_SWAPPED);
		1331	}
		1332
		1333	sub reset_at {
		1334	my ($self) = @_;
		1335
		1336	# TODO: safety, remove and allow resettable per-player maps
		1337	return 1e99 if $self->{path}{user_rel};
		1338	return 1e99 if $self->{deny_reset};
		1339
		1340	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1341	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1342
		1343	$time + $to
		1344	}
		1345
		1346	sub should_reset {
		1347	my ($self) = @_;
		1348
		1349	$self->reset_at <= $cf::RUNTIME
		1350	}
		1351
		1352	sub unlink_save {
		1353	my ($self) = @_;
		1354
		1355	utf8::encode (my $save = $self->{path}->save_path);
		1356	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1357	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1358	}
		1359
		1360	sub rename {
		1361	my ($self, $new_path) = @_;
		1362
		1363	$self->unlink_save;
		1364
		1365	delete $cf::MAP{$self->path};
		1366	$self->{path} = new cf::path $new_path;
		1367	$self->path ($self->{path}->as_string);
		1368	$cf::MAP{$self->path} = $self;
		1369
		1370	$self->save;
		1371	}
		1372
		1373	sub reset {
		1374	my ($self) = @_;
		1375
		1376	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1377
		1378	return if $self->players;
		1379	return if $self->{path}{user_rel};#d#
		1380
		1381	warn "resetting map ", $self->path;#d#
		1382
		1383	delete $cf::MAP{$self->path};
		1384
		1385	$_->clear_links_to ($self) for values %cf::MAP;
		1386
		1387	$self->unlink_save;
		1388	$self->destroy;
		1389	}
		1390
		1391	my $nuke_counter = "aaaa";
		1392
		1393	sub nuke {
		1394	my ($self) = @_;
		1395
		1396	$self->{deny_save} = 1;
		1397	$self->reset_timeout (1);
		1398	$self->rename ("{nuke}/" . ($nuke_counter++));
		1399	$self->reset; # polite request, might not happen
		1400	}
		1401
		1402	sub customise_for {
		1403	my ($map, $ob) = @_;
		1404
		1405	if ($map->per_player) {
		1406	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1407	}
		1408
		1409	$map
		1410	}
		1411
		1412	sub emergency_save {
		1413	my $freeze_guard = cf::freeze_mainloop;
		1414
		1415	warn "enter emergency map save\n";
		1416
		1417	cf::sync_job {
		1418	warn "begin emergency map save\n";
		1419	$_->save for values %cf::MAP;
		1420	};
		1421
		1422	warn "end emergency map save\n";
		1423	}
		1424
		1425	package cf;
		1426
		1427	=back
		1428
		1429
		1430	=head3 cf::object::player
		1431
		1432	=over 4
		1433
779	=item $object->reply ($npc, $msg[, $flags])	1434	=item $player_object->reply ($npc, $msg[, $flags])
780		1435
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1436	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	1437	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	1438	dialogue with the given NPC character.
784		1439
785	=cut	1440	=cut
786		1441
787	# rough implementation of a future "reply" method that works	1442	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	1443	# with dialog boxes.
		1444	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	1445	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	1446	my ($self, $npc, $msg, $flags) = @_;
791		1447
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1448	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		1449
…		…
797	$msg = $npc->name . " says: $msg" if $npc;	1453	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	1454	$self->message ($msg, $flags);
799	}	1455	}
800	}	1456	}
801		1457
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	1458	=item $player_object->may ("access")
803		1459
804	Sends an ext reply to the player.	1460	Returns wether the given player is authorized to access resource "access"
		1461	(e.g. "command_wizcast").
805		1462
806	=cut	1463	=cut
807		1464
808	sub cf::player::ext_reply($$$%) {	1465	sub cf::object::player::may {
		1466	my ($self, $access) = @_;
		1467
		1468	$self->flag (cf::FLAG_WIZ) ||
		1469	(ref $cf::CFG{"may_$access"}
		1470	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1471	: $cf::CFG{"may_$access"})
		1472	}
		1473
		1474	=item $player_object->enter_link
		1475
		1476	Freezes the player and moves him/her to a special map (C<{link}>).
		1477
		1478	The player should be reaosnably safe there for short amounts of time. You
		1479	I<MUST> call C<leave_link> as soon as possible, though.
		1480
		1481	=item $player_object->leave_link ($map, $x, $y)
		1482
		1483	Moves the player out of the specila link map onto the given map. If the
		1484	map is not valid (or omitted), the player will be moved back to the
		1485	location he/she was before the call to C<enter_link>, or, if that fails,
		1486	to the emergency map position.
		1487
		1488	Might block.
		1489
		1490	=cut
		1491
		1492	sub cf::object::player::enter_link {
		1493	my ($self) = @_;
		1494
		1495	$self->deactivate_recursive;
		1496
		1497	return if $self->map == $LINK_MAP;
		1498
		1499	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1500	if $self->map;
		1501
		1502	$self->enter_map ($LINK_MAP, 20, 20);
		1503	}
		1504
		1505	sub cf::object::player::leave_link {
		1506	my ($self, $map, $x, $y) = @_;
		1507
		1508	my $link_pos = delete $self->{_link_pos};
		1509
		1510	unless ($map) {
		1511	# restore original map position
		1512	($map, $x, $y) = @{ $link_pos || [] };
		1513	$map = cf::map::find $map;
		1514
		1515	unless ($map) {
		1516	($map, $x, $y) = @$EMERGENCY_POSITION;
		1517	$map = cf::map::find $map
		1518	or die "FATAL: cannot load emergency map\n";
		1519	}
		1520	}
		1521
		1522	($x, $y) = (-1, -1)
		1523	unless (defined $x) && (defined $y);
		1524
		1525	# use -1 or undef as default coordinates, not 0, 0
		1526	($x, $y) = ($map->enter_x, $map->enter_y)
		1527	if $x <=0 && $y <= 0;
		1528
		1529	$map->load;
		1530
		1531	$self->activate_recursive;
		1532	$self->enter_map ($map, $x, $y);
		1533	}
		1534
		1535	cf::player->attach (
		1536	on_logout => sub {
		1537	my ($pl) = @_;
		1538
		1539	# abort map switching before logout
		1540	if ($pl->ob->{_link_pos}) {
		1541	cf::sync_job {
		1542	$pl->ob->leave_link
		1543	};
		1544	}
		1545	},
		1546	on_login => sub {
		1547	my ($pl) = @_;
		1548
		1549	# try to abort aborted map switching on player login :)
		1550	# should happen only on crashes
		1551	if ($pl->ob->{_link_pos}) {
		1552
		1553	$pl->ob->enter_link;
		1554	(async {
		1555	# we need this sleep as the login has a concurrent enter_exit running
		1556	# and this sleep increases chances of the player not ending up in scorn
		1557	$pl->ob->reply (undef,
		1558	"There was an internal problem at your last logout, "
		1559	. "the server will try to bring you to your intended destination in a second.",
		1560	cf::NDI_RED);
		1561	Coro::Timer::sleep 1;
		1562	$pl->ob->leave_link;
		1563	})->prio (2);
		1564	}
		1565	},
		1566	);
		1567
		1568	=item $player_object->goto ($path, $x, $y)
		1569
		1570	=cut
		1571
		1572	sub cf::object::player::goto {
		1573	my ($self, $path, $x, $y) = @_;
		1574
		1575	$self->enter_link;
		1576
		1577	(async {
		1578	$path = new cf::path $path;
		1579
		1580	my $map = cf::map::find $path->as_string;
		1581	$map = $map->customise_for ($self) if $map;
		1582
		1583	# warn "entering ", $map->path, " at ($x, $y)\n"
		1584	# if $map;
		1585
		1586	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1587
		1588	$self->leave_link ($map, $x, $y);
		1589	})->prio (1);
		1590	}
		1591
		1592	=item $player_object->enter_exit ($exit_object)
		1593
		1594	=cut
		1595
		1596	sub parse_random_map_params {
		1597	my ($spec) = @_;
		1598
		1599	my $rmp = { # defaults
		1600	xsize => 10,
		1601	ysize => 10,
		1602	};
		1603
		1604	for (split /\n/, $spec) {
		1605	my ($k, $v) = split /\s+/, $_, 2;
		1606
		1607	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1608	}
		1609
		1610	$rmp
		1611	}
		1612
		1613	sub prepare_random_map {
		1614	my ($exit) = @_;
		1615
		1616	# all this does is basically replace the /! path by
		1617	# a new random map path (?random/...) with a seed
		1618	# that depends on the exit object
		1619
		1620	my $rmp = parse_random_map_params $exit->msg;
		1621
		1622	if ($exit->map) {
		1623	$rmp->{region} = $exit->map->region_name;
		1624	$rmp->{origin_map} = $exit->map->path;
		1625	$rmp->{origin_x} = $exit->x;
		1626	$rmp->{origin_y} = $exit->y;
		1627	}
		1628
		1629	$rmp->{random_seed} ||= $exit->random_seed;
		1630
		1631	my $data = cf::to_json $rmp;
		1632	my $md5 = Digest::MD5::md5_hex $data;
		1633
		1634	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1635	aio_write $fh, 0, (length $data), $data, 0;
		1636
		1637	$exit->slaying ("?random/$md5");
		1638	$exit->msg (undef);
		1639	}
		1640	}
		1641
		1642	sub cf::object::player::enter_exit {
809	my ($self, $id, %msg) = @_;	1643	my ($self, $exit) = @_;
810		1644
811	$msg{msgid} = $id;	1645	return unless $self->type == cf::PLAYER;
812		1646
813	$self->send ("ext " . to_json \%msg);	1647	$self->enter_link;
		1648
		1649	(async {
		1650	$self->deactivate_recursive; # just to be sure
		1651	unless (eval {
		1652	prepare_random_map $exit
		1653	if $exit->slaying eq "/!";
		1654
		1655	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1656	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1657
		1658	1;
		1659	}) {
		1660	$self->message ("Something went wrong deep within the crossfire server. "
		1661	. "I'll try to bring you back to the map you were before. "
		1662	. "Please report this to the dungeon master",
		1663	cf::NDI_UNIQUE | cf::NDI_RED);
		1664
		1665	warn "ERROR in enter_exit: $@";
		1666	$self->leave_link;
		1667	}
		1668	})->prio (1);
814	}	1669	}
		1670
		1671	=head3 cf::client
		1672
		1673	=over 4
		1674
		1675	=item $client->send_drawinfo ($text, $flags)
		1676
		1677	Sends a drawinfo packet to the client. Circumvents output buffering so
		1678	should not be used under normal circumstances.
		1679
		1680	=cut
		1681
		1682	sub cf::client::send_drawinfo {
		1683	my ($self, $text, $flags) = @_;
		1684
		1685	utf8::encode $text;
		1686	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1687	}
		1688
		1689
		1690	=item $success = $client->query ($flags, "text", \&cb)
		1691
		1692	Queues a query to the client, calling the given callback with
		1693	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1694	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1695
		1696	Queries can fail, so check the return code. Or don't, as queries will become
		1697	reliable at some point in the future.
		1698
		1699	=cut
		1700
		1701	sub cf::client::query {
		1702	my ($self, $flags, $text, $cb) = @_;
		1703
		1704	return unless $self->state == ST_PLAYING
		1705	|| $self->state == ST_SETUP
		1706	|| $self->state == ST_CUSTOM;
		1707
		1708	$self->state (ST_CUSTOM);
		1709
		1710	utf8::encode $text;
		1711	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1712
		1713	$self->send_packet ($self->{query_queue}[0][0])
		1714	if @{ $self->{query_queue} } == 1;
		1715	}
		1716
		1717	cf::client->attach (
		1718	on_reply => sub {
		1719	my ($ns, $msg) = @_;
		1720
		1721	# this weird shuffling is so that direct followup queries
		1722	# get handled first
		1723	my $queue = delete $ns->{query_queue}
		1724	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1725
		1726	(shift @$queue)->[1]->($msg);
		1727
		1728	push @{ $ns->{query_queue} }, @$queue;
		1729
		1730	if (@{ $ns->{query_queue} } == @$queue) {
		1731	if (@$queue) {
		1732	$ns->send_packet ($ns->{query_queue}[0][0]);
		1733	} else {
		1734	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1735	}
		1736	}
		1737	},
		1738	);
		1739
		1740	=item $client->async (\&cb)
		1741
		1742	Create a new coroutine, running the specified callback. The coroutine will
		1743	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1744	or loss of connection).
		1745
		1746	=cut
		1747
		1748	sub cf::client::async {
		1749	my ($self, $cb) = @_;
		1750
		1751	my $coro = &Coro::async ($cb);
		1752
		1753	$coro->on_destroy (sub {
		1754	delete $self->{_coro}{$coro+0};
		1755	});
		1756
		1757	$self->{_coro}{$coro+0} = $coro;
		1758
		1759	$coro
		1760	}
		1761
		1762	cf::client->attach (
		1763	on_destroy => sub {
		1764	my ($ns) = @_;
		1765
		1766	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1767	},
		1768	);
815		1769
816	=back	1770	=back
817		1771
818	=cut
819
820	#############################################################################
821		1772
822	=head2 SAFE SCRIPTING	1773	=head2 SAFE SCRIPTING
823		1774
824	Functions that provide a safe environment to compile and execute	1775	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	1776	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	1777	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	1778	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	1779	functions and methods that can be called is greatly reduced.
829		1780
830	=cut	1781	=cut
831		1782
832	our $safe = new Safe "safe";	1783	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	1784	our $safe_hole = new Safe::Hole;
…		…
840		1791
841	=pod	1792	=pod
842		1793
843	The following fucntions and emthods are available within a safe environment:	1794	The following fucntions and emthods are available within a safe environment:
844		1795
845	cf::object contr pay_amount pay_player	1796	cf::object contr pay_amount pay_player map
846	cf::object::player player	1797	cf::object::player player
847	cf::player peaceful	1798	cf::player peaceful
		1799	cf::map trigger
848		1800
849	=cut	1801	=cut
850		1802
851	for (	1803	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	1804	["cf::object" => qw(contr pay_amount pay_player map)],
853	["cf::object::player" => qw(player)],	1805	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	1806	["cf::player" => qw(peaceful)],
		1807	["cf::map" => qw(trigger)],
855	) {	1808	) {
856	no strict 'refs';	1809	no strict 'refs';
857	my ($pkg, @funs) = @$_;	1810	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1811	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	1812	for @funs;
…		…
969		1922
970	Immediately write the database to disk I<if it is dirty>.	1923	Immediately write the database to disk I<if it is dirty>.
971		1924
972	=cut	1925	=cut
973		1926
		1927	our $DB;
		1928
974	{	1929	{
975	my $db;
976	my $path = cf::localdir . "/database.pst";	1930	my $path = cf::localdir . "/database.pst";
977		1931
978	sub db_load() {	1932	sub db_load() {
979	warn "loading database $path\n";#d# remove later
980	$db = stat $path ? Storable::retrieve $path : { };	1933	$DB = stat $path ? Storable::retrieve $path : { };
981	}	1934	}
982		1935
983	my $pid;	1936	my $pid;
984		1937
985	sub db_save() {	1938	sub db_save() {
986	warn "saving database $path\n";#d# remove later
987	waitpid $pid, 0 if $pid;	1939	waitpid $pid, 0 if $pid;
988	if (0 == ($pid = fork)) {	1940	if (0 == ($pid = fork)) {
989	$db->{_meta}{version} = 1;	1941	$DB->{_meta}{version} = 1;
990	Storable::nstore $db, "$path~";	1942	Storable::nstore $DB, "$path~";
991	rename "$path~", $path;	1943	rename "$path~", $path;
992	cf::_exit 0 if defined $pid;	1944	cf::_exit 0 if defined $pid;
993	}	1945	}
994	}	1946	}
995		1947
…		…
998	sub db_sync() {	1950	sub db_sync() {
999	db_save if $dirty;	1951	db_save if $dirty;
1000	undef $dirty;	1952	undef $dirty;
1001	}	1953	}
1002		1954
1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	1955	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1004	db_sync;	1956	db_sync;
1005	});	1957	});
1006		1958
1007	sub db_dirty() {	1959	sub db_dirty() {
1008	$dirty = 1;	1960	$dirty = 1;
1009	$idle->start;	1961	$idle->start;
1010	}	1962	}
1011		1963
1012	sub db_get($;$) {	1964	sub db_get($;$) {
1013	@_ >= 2	1965	@_ >= 2
1014	? $db->{$_[0]}{$_[1]}	1966	? $DB->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })	1967	: ($DB->{$_[0]} ||= { })
1016	}	1968	}
1017		1969
1018	sub db_put($$;$) {	1970	sub db_put($$;$) {
1019	if (@_ >= 3) {	1971	if (@_ >= 3) {
1020	$db->{$_[0]}{$_[1]} = $_[2];	1972	$DB->{$_[0]}{$_[1]} = $_[2];
1021	} else {	1973	} else {
1022	$db->{$_[0]} = $_[1];	1974	$DB->{$_[0]} = $_[1];
1023	}	1975	}
1024	db_dirty;	1976	db_dirty;
1025	}	1977	}
1026		1978
1027	attach_global	1979	cf::global->attach (
1028	prio => 10000,	1980	prio => 10000,
1029	on_cleanup => sub {	1981	on_cleanup => sub {
1030	db_sync;	1982	db_sync;
1031	},	1983	},
1032	;	1984	);
1033	}	1985	}
1034		1986
1035	#############################################################################	1987	#############################################################################
1036	# the server's main()	1988	# the server's main()
1037		1989
…		…
1039	open my $fh, "<:utf8", cf::confdir . "/config"	1991	open my $fh, "<:utf8", cf::confdir . "/config"
1040	or return;	1992	or return;
1041		1993
1042	local $/;	1994	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	1995	*CFG = YAML::Syck::Load <$fh>;
		1996
		1997	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		1998
		1999	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2000	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2001
		2002	if (exists $CFG{mlockall}) {
		2003	eval {
		2004	$CFG{mlockall} ? &mlockall : &munlockall
		2005	and die "WARNING: m(un)lockall failed: $!\n";
		2006	};
		2007	warn $@ if $@;
		2008	}
1044	}	2009	}
1045		2010
1046	sub main {	2011	sub main {
		2012	# we must not ever block the main coroutine
		2013	local $Coro::idle = sub {
		2014	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2015	async { Event::one_event };
		2016	};
		2017
1047	cfg_load;	2018	cfg_load;
1048	db_load;	2019	db_load;
1049	load_extensions;	2020	load_extensions;
1050	Event::loop;	2021	Event::loop;
1051	}	2022	}
1052		2023
1053	#############################################################################	2024	#############################################################################
1054	# initialisation	2025	# initialisation
1055		2026
1056	sub _perl_reload(&) {	2027	sub reload() {
1057	my ($msg) = @_;	2028	# can/must only be called in main
		2029	if ($Coro::current != $Coro::main) {
		2030	warn "can only reload from main coroutine\n";
		2031	return;
		2032	}
1058		2033
1059	$msg->("reloading...");	2034	warn "reloading...";
		2035
		2036	my $guard = freeze_mainloop;
		2037	cf::emergency_save;
1060		2038
1061	eval {	2039	eval {
		2040	# if anything goes wrong in here, we should simply crash as we already saved
		2041
1062	# cancel all watchers	2042	# cancel all watchers
1063	$_->cancel for Event::all_watchers;	2043	for (Event::all_watchers) {
		2044	$_->cancel if $_->data & WF_AUTOCANCEL;
		2045	}
		2046
		2047	# cancel all extension coros
		2048	$_->cancel for values %EXT_CORO;
		2049	%EXT_CORO = ();
1064		2050
1065	# unload all extensions	2051	# unload all extensions
1066	for (@exts) {	2052	for (@exts) {
1067	$msg->("unloading <$_>");	2053	warn "unloading <$_>";
1068	unload_extension $_;	2054	unload_extension $_;
1069	}	2055	}
1070		2056
1071	# unload all modules loaded from $LIBDIR	2057	# unload all modules loaded from $LIBDIR
1072	while (my ($k, $v) = each %INC) {	2058	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2059	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		2060
1075	$msg->("removing <$k>");	2061	warn "removing <$k>";
1076	delete $INC{$k};	2062	delete $INC{$k};
1077		2063
1078	$k =~ s/\.pm$//;	2064	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	2065	$k =~ s/\//::/g;
1080		2066
…		…
1085	Symbol::delete_package $k;	2071	Symbol::delete_package $k;
1086	}	2072	}
1087		2073
1088	# sync database to disk	2074	# sync database to disk
1089	cf::db_sync;	2075	cf::db_sync;
		2076	IO::AIO::flush;
1090		2077
1091	# get rid of safe::, as good as possible	2078	# get rid of safe::, as good as possible
1092	Symbol::delete_package "safe::$_"	2079	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2080	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		2081
1095	# remove register_script_function callbacks	2082	# remove register_script_function callbacks
1096	# TODO	2083	# TODO
1097		2084
1098	# unload cf.pm "a bit"	2085	# unload cf.pm "a bit"
…		…
1101	# don't, removes xs symbols, too,	2088	# don't, removes xs symbols, too,
1102	# and global variables created in xs	2089	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	2090	#Symbol::delete_package __PACKAGE__;
1104		2091
1105	# reload cf.pm	2092	# reload cf.pm
1106	$msg->("reloading cf.pm");	2093	warn "reloading cf.pm";
1107	require cf;	2094	require cf;
		2095	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		2096
1109	# load config and database again	2097	# load config and database again
1110	cf::cfg_load;	2098	cf::cfg_load;
1111	cf::db_load;	2099	cf::db_load;
1112		2100
1113	# load extensions	2101	# load extensions
1114	$msg->("load extensions");	2102	warn "load extensions";
1115	cf::load_extensions;	2103	cf::load_extensions;
1116		2104
1117	# reattach attachments to objects	2105	# reattach attachments to objects
1118	$msg->("reattach");	2106	warn "reattach";
1119	_global_reattach;	2107	_global_reattach;
1120	};	2108	};
1121	$msg->($@) if $@;
1122		2109
1123	$msg->("reloaded");	2110	if ($@) {
		2111	warn $@;
		2112	warn "error while reloading, exiting.";
		2113	exit 1;
		2114	}
		2115
		2116	warn "reloaded successfully";
1124	};	2117	};
1125		2118
1126	sub perl_reload() {	2119	#############################################################################
1127	_perl_reload {
1128	warn $_[0];
1129	print "$_[0]\n";
1130	};
1131	}
1132		2120
		2121	unless ($LINK_MAP) {
		2122	$LINK_MAP = cf::map::new;
		2123
		2124	$LINK_MAP->width (41);
		2125	$LINK_MAP->height (41);
		2126	$LINK_MAP->alloc;
		2127	$LINK_MAP->path ("{link}");
		2128	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2129	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2130
		2131	# dirty hack because... archetypes are not yet loaded
		2132	Event->timer (
		2133	after => 2,
		2134	cb => sub {
		2135	$_[0]->w->cancel;
		2136
		2137	# provide some exits "home"
		2138	my $exit = cf::object::new "exit";
		2139
		2140	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2141	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2142	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2143
		2144	$LINK_MAP->insert ($exit->clone, 19, 19);
		2145	$LINK_MAP->insert ($exit->clone, 19, 20);
		2146	$LINK_MAP->insert ($exit->clone, 19, 21);
		2147	$LINK_MAP->insert ($exit->clone, 20, 19);
		2148	$LINK_MAP->insert ($exit->clone, 20, 21);
		2149	$LINK_MAP->insert ($exit->clone, 21, 19);
		2150	$LINK_MAP->insert ($exit->clone, 21, 20);
		2151	$LINK_MAP->insert ($exit->clone, 21, 21);
		2152
		2153	$exit->destroy;
		2154	});
		2155
		2156	$LINK_MAP->{deny_save} = 1;
		2157	$LINK_MAP->{deny_reset} = 1;
		2158
		2159	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2160	}
		2161
		2162	register "<global>", __PACKAGE__;
		2163
1133	register_command "perl-reload", 0, sub {	2164	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	2165	my ($who, $arg) = @_;
1135		2166
1136	if ($who->flag (FLAG_WIZ)) {	2167	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	2168	$who->message ("start of reload.");
1138	warn $_[0];	2169	reload;
1139	$who->message ($_[0]);	2170	$who->message ("end of reload.");
1140	};
1141	}	2171	}
1142	};	2172	};
1143		2173
1144	register "<global>", __PACKAGE__;
1145
1146	unshift @INC, $LIBDIR;	2174	unshift @INC, $LIBDIR;
1147		2175
1148	$TICK_WATCHER = Event->timer (	2176	$TICK_WATCHER = Event->timer (
		2177	reentrant => 0,
1149	prio => 1,	2178	prio => 0,
1150	at => $NEXT_TICK || 1,	2179	at => $NEXT_TICK || $TICK,
		2180	data => WF_AUTOCANCEL,
1151	cb => sub {	2181	cb => sub {
1152	cf::server_tick; # one server iteration	2182	cf::server_tick; # one server iteration
1153		2183	$RUNTIME += $TICK;
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;	2184	$NEXT_TICK += $TICK;
1156		2185
1157	# if we are delayed by four ticks, skip them all	2186	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2187	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1159		2188
1160	$TICK_WATCHER->at ($NEXT_TICK);	2189	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	2190	$TICK_WATCHER->start;
1162	},	2191	},
1163	);	2192	);
1164		2193
		2194	IO::AIO::max_poll_time $TICK * 0.2;
		2195
		2196	Event->io (
		2197	fd => IO::AIO::poll_fileno,
		2198	poll => 'r',
		2199	prio => 5,
		2200	data => WF_AUTOCANCEL,
		2201	cb => \&IO::AIO::poll_cb,
		2202	);
		2203
		2204	Event->timer (
		2205	data => WF_AUTOCANCEL,
		2206	after => 0,
		2207	interval => 10,
		2208	cb => sub {
		2209	(Coro::unblock_sub {
		2210	write_runtime
		2211	or warn "ERROR: unable to write runtime file: $!";
		2212	})->();
		2213	},
		2214	);
		2215
		2216	END { cf::emergency_save }
		2217
1165	1	2218	1
1166		2219

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