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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.61 by root, Sun Sep 3 22:45:56 2006 UTC vs.
Revision 1.239 by root, Mon Apr 16 06:23:42 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;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
		14	use Coro 3.52 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21	use Coro::Storable;
		22
		23	use BDB ();
		24	use Data::Dumper;
		25	use Digest::MD5;
		26	use Fcntl;
		27	use YAML::Syck ();
		28	use IO::AIO 2.32 ();
10	use Time::HiRes;	29	use Time::HiRes;
11	use Event;	30	use Compress::LZF;
		31
		32	# configure various modules to our taste
		33	#
		34	$Storable::canonical = 1; # reduce rsync transfers
		35	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		36	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		37
12	$Event::Eval = 1; # no idea why this is required, but it is	38	$Event::Eval = 1; # no idea why this is required, but it is
13		39
14	use strict;	40	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		41	$YAML::Syck::ImplicitUnicode = 1;
15		42
16	_reload_1;	43	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		44
		45	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		46
18	our %COMMAND = ();	47	our %COMMAND = ();
		48	our %COMMAND_TIME = ();
		49
		50	our @EXTS = (); # list of extension package names
		51	our %EXTCMD = ();
		52	our %EXT_CORO = (); # coroutines bound to extensions
		53	our %EXT_MAP = (); # pluggable maps
		54
		55	our $RELOAD; # number of reloads so far
19	our @EVENT;	56	our @EVENT;
20	our %PROP_TYPE;	57	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		58
24	our $TICK = MAX_TIME * 1e-6;	59	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	60	our $TICK_WATCHER;
		61	our $AIO_POLL_WATCHER;
		62	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	63	our $NEXT_TICK;
		64	our $NOW;
		65	our $USE_FSYNC = 1; # use fsync to write maps - default off
		66
		67	our $BDB_POLL_WATCHER;
		68	our $DB_ENV;
		69
		70	our %CFG;
		71
		72	our $UPTIME; $UPTIME ||= time;
		73	our $RUNTIME;
		74
		75	our %PLAYER; # all users
		76	our %MAP; # all maps
		77	our $LINK_MAP; # the special {link} map, which is always available
		78	our $RANDOM_MAPS = cf::localdir . "/random";
		79	our $BDB_ENV_DIR = cf::localdir . "/db";
		80
		81	# used to convert map paths into valid unix filenames by replacing / by ∕
		82	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		83
		84	binmode STDOUT;
		85	binmode STDERR;
		86
		87	# read virtual server time, if available
		88	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		89	open my $fh, "<", cf::localdir . "/runtime"
		90	or die "unable to read runtime file: $!";
		91	$RUNTIME = <$fh> + 0.;
		92	}
		93
		94	mkdir cf::localdir;
		95	mkdir cf::localdir . "/" . cf::playerdir;
		96	mkdir cf::localdir . "/" . cf::tmpdir;
		97	mkdir cf::localdir . "/" . cf::uniquedir;
		98	mkdir $RANDOM_MAPS;
		99	mkdir $BDB_ENV_DIR;
		100
		101	our $EMERGENCY_POSITION;
		102
		103	sub cf::map::normalise;
		104
		105	#############################################################################
		106
		107	=head2 GLOBAL VARIABLES
		108
		109	=over 4
		110
		111	=item $cf::UPTIME
		112
		113	The timestamp of the server start (so not actually an uptime).
		114
		115	=item $cf::RUNTIME
		116
		117	The time this server has run, starts at 0 and is increased by $cf::TICK on
		118	every server tick.
		119
		120	=item $cf::LIBDIR
		121
		122	The perl library directory, where extensions and cf-specific modules can
		123	be found. It will be added to C<@INC> automatically.
		124
		125	=item $cf::NOW
		126
		127	The time of the last (current) server tick.
		128
		129	=item $cf::TICK
		130
		131	The interval between server ticks, in seconds.
		132
		133	=item %cf::CFG
		134
		135	Configuration for the server, loaded from C</etc/crossfire/config>, or
		136	from wherever your confdir points to.
		137
		138	=item cf::wait_for_tick, cf::wait_for_tick_begin
		139
		140	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		141	returns directly I<after> the tick processing (and consequently, can only wake one process
		142	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		143
		144	=back
		145
		146	=cut
27		147
28	BEGIN {	148	BEGIN {
29	*CORE::GLOBAL::warn = sub {	149	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	150	my $msg = join "", @_;
		151	utf8::encode $msg;
		152
31	$msg .= "\n"	153	$msg .= "\n"
32	unless $msg =~ /\n$/;	154	unless $msg =~ /\n$/;
33		155
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	156	LOG llevError, $msg;
36	};	157	};
37	}	158	}
38		159
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	160	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		161	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	162	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	163	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	164	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	165	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		166
75	# we bless all objects into (empty) derived classes to force a method lookup	167	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	168	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	169	for my $pkg (qw(
		170	cf::global cf::attachable
		171	cf::object cf::object::player
		172	cf::client cf::player
		173	cf::arch cf::living
		174	cf::map cf::party cf::region
		175	)) {
78	no strict 'refs';	176	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	177	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	178	}
81		179
82	$Event::DIED = sub {	180	$Event::DIED = sub {
83	warn "error in event callback: @_";	181	warn "error in event callback: @_";
84	};	182	};
85		183
86	my %ext_pkg;	184	=head2 UTILITY FUNCTIONS
87	my @exts;	185
88	my @hook;	186	=over 4
89	my %command;	187
90	my %extcmd;	188	=item dumpval $ref
		189
		190	=cut
		191
		192	sub dumpval {
		193	eval {
		194	local $SIG{__DIE__};
		195	my $d;
		196	if (1) {
		197	$d = new Data::Dumper([$_[0]], ["*var"]);
		198	$d->Terse(1);
		199	$d->Indent(2);
		200	$d->Quotekeys(0);
		201	$d->Useqq(1);
		202	#$d->Bless(...);
		203	$d->Seen($_[1]) if @_ > 1;
		204	$d = $d->Dump();
		205	}
		206	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		207	$d
		208	} || "[unable to dump $_[0]: '$@']";
		209	}
		210
		211	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		212
		213	=item $ref = cf::from_json $json
		214
		215	Converts a JSON string into the corresponding perl data structure.
		216
		217	=item $json = cf::to_json $ref
		218
		219	Converts a perl data structure into its JSON representation.
		220
		221	=item cf::lock_wait $string
		222
		223	Wait until the given lock is available. See cf::lock_acquire.
		224
		225	=item my $lock = cf::lock_acquire $string
		226
		227	Wait until the given lock is available and then acquires it and returns
		228	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		229	for example when the coroutine gets canceled), the lock is automatically
		230	returned.
		231
		232	Lock names should begin with a unique identifier (for example, cf::map::find
		233	uses map_find and cf::map::load uses map_load).
		234
		235	=cut
		236
		237	our %LOCK;
		238
		239	sub lock_wait($) {
		240	my ($key) = @_;
		241
		242	# wait for lock, if any
		243	while ($LOCK{$key}) {
		244	push @{ $LOCK{$key} }, $Coro::current;
		245	Coro::schedule;
		246	}
		247	}
		248
		249	sub lock_acquire($) {
		250	my ($key) = @_;
		251
		252	# wait, to be sure we are not locked
		253	lock_wait $key;
		254
		255	$LOCK{$key} = [];
		256
		257	Coro::guard {
		258	# wake up all waiters, to be on the safe side
		259	$_->ready for @{ delete $LOCK{$key} };
		260	}
		261	}
		262
		263	sub freeze_mainloop {
		264	return unless $TICK_WATCHER->is_active;
		265
		266	my $guard = Coro::guard {
		267	$TICK_WATCHER->start;
		268	};
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $guard = cf::lock_acquire "write_runtime";
		350
		351	my $runtime = cf::localdir . "/runtime";
		352
		353	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		354	or return;
		355
		356	my $value = $cf::RUNTIME + 90 + 10;
		357	# 10 is the runtime save interval, for a monotonic clock
		358	# 60 allows for the watchdog to kill the server.
		359
		360	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		361	and return;
		362
		363	# always fsync - this file is important
		364	aio_fsync $fh
		365	and return;
		366
		367	close $fh
		368	or return;
		369
		370	aio_rename "$runtime~", $runtime
		371	and return;
		372
		373	1
		374	}
		375
		376	=item cf::datalog type => key => value, ...
		377
		378	Log a datalog packet of the given type with the given key-value pairs.
		379
		380	=cut
		381
		382	sub datalog($@) {
		383	my ($type, %kv) = @_;
		384	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		385	}
		386
		387	=back
		388
		389	=cut
91		390
92	#############################################################################	391	#############################################################################
93	# utility functions
94		392
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	393	=head2 ATTACHABLE OBJECTS
96		394
97	sub from_json($) {	395	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	396	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	397	to it. All such attachable objects support the following methods.
100	}
101		398
102	sub to_json($) {	399	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	400	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	401	crossfire+).
105	}
106
107	#############################################################################
108	# "new" plug-in system
109
110	=head3 EVENTS AND OBJECT ATTACHMENTS
111		402
112	=over 4	403	=over 4
113		404
114	=item $object->attach ($attachment, key => $value...)
115
116	=item $object->detach ($attachment)
117
118	Attach/detach a pre-registered attachment to an object.
119
120	=item $player->attach ($attachment, key => $value...)
121
122	=item $player->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to a player.
125
126	=item $map->attach ($attachment, key => $value...)	405	=item $attachable->attach ($attachment, key => $value...)
127		406
128	=item $map->detach ($attachment)	407	=item $attachable->detach ($attachment)
129		408
130	Attach/detach a pre-registered attachment to a map.	409	Attach/detach a pre-registered attachment to a specific object and give it
		410	the specified key/value pairs as arguments.
131		411
132	=item $bool = $object->attached ($name)	412	Example, attach a minesweeper attachment to the given object, making it a
		413	10x10 minesweeper game:
133		414
134	=item $bool = $player->attached ($name)	415	$obj->attach (minesweeper => width => 10, height => 10);
135		416
136	=item $bool = $map->attached ($name)	417	=item $bool = $attachable->attached ($name)
137		418
138	Checks wether the named attachment is currently attached to the object.	419	Checks wether the named attachment is currently attached to the object.
139		420
140	=item cf::attach_global ...	421	=item cf::CLASS->attach ...
141		422
142	Attach handlers for global events.	423	=item cf::CLASS->detach ...
143		424
144	This and all following C<attach_*>-functions expect any number of the	425	Define an anonymous attachment and attach it to all objects of the given
145	following handler/hook descriptions:	426	CLASS. See the next function for an explanation of its arguments.
		427
		428	You can attach to global events by using the C<cf::global> class.
		429
		430	Example, log all player logins:
		431
		432	cf::player->attach (
		433	on_login => sub {
		434	my ($pl) = @_;
		435	...
		436	},
		437	);
		438
		439	Example, attach to the jeweler skill:
		440
		441	cf::object->attach (
		442	type => cf::SKILL,
		443	subtype => cf::SK_JEWELER,
		444	on_use_skill => sub {
		445	my ($sk, $ob, $part, $dir, $msg) = @_;
		446	...
		447	},
		448	);
		449
		450	=item cf::CLASS::attachment $name, ...
		451
		452	Register an attachment by C<$name> through which attachable objects of the
		453	given CLASS can refer to this attachment.
		454
		455	Some classes such as crossfire maps and objects can specify attachments
		456	that are attached at load/instantiate time, thus the need for a name.
		457
		458	These calls expect any number of the following handler/hook descriptions:
146		459
147	=over 4	460	=over 4
148		461
149	=item prio => $number	462	=item prio => $number
150		463
…		…
152	by another C<prio> setting). Lower priority handlers get executed	465	by another C<prio> setting). Lower priority handlers get executed
153	earlier. The default priority is C<0>, and many built-in handlers are	466	earlier. The default priority is C<0>, and many built-in handlers are
154	registered at priority C<-1000>, so lower priorities should not be used	467	registered at priority C<-1000>, so lower priorities should not be used
155	unless you know what you are doing.	468	unless you know what you are doing.
156		469
		470	=item type => $type
		471
		472	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		473	given type of objects only (the additional parameter C<subtype> can be
		474	used to further limit to the given subtype).
		475
157	=item on_I<event> => \&cb	476	=item on_I<event> => \&cb
158		477
159	Call the given code reference whenever the named event happens (event is	478	Call the given code reference whenever the named event happens (event is
160	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	479	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
161	handlers are recognised generally depends on the type of object these	480	handlers are recognised generally depends on the type of object these
…		…
170	package and register them. Only handlers for eevents supported by the	489	package and register them. Only handlers for eevents supported by the
171	object/class are recognised.	490	object/class are recognised.
172		491
173	=back	492	=back
174		493
175	=item cf::attach_to_type $object_type, $subtype, ...	494	Example, define an attachment called "sockpuppet" that calls the given
		495	event handler when a monster attacks:
176		496
177	Attach handlers for a specific object type (e.g. TRANSPORT) and	497	cf::object::attachment sockpuppet =>
178	subtype. If C<$subtype> is zero or undef, matches all objects of the given	498	on_skill_attack => sub {
179	type.	499	my ($self, $victim) = @_;
180		500	...
181	=item cf::attach_to_objects ...
182
183	Attach handlers to all objects. Do not use this except for debugging or
184	very rare events, as handlers are (obviously) called for I<all> objects in
185	the game.
186
187	=item cf::attach_to_players ...
188
189	Attach handlers to all players.
190
191	=item cf::attach_to_maps ...
192
193	Attach handlers to all maps.
194
195	=item cf:register_attachment $name, ...
196
197	Register an attachment by name through which objects can refer to this
198	attachment.
199
200	=item cf:register_player_attachment $name, ...
201
202	Register an attachment by name through which players can refer to this
203	attachment.
204
205	=item cf:register_map_attachment $name, ...
206
207	Register an attachment by name through which maps can refer to this
208	attachment.
209
210	=cut
211
212	# the following variables are defined in .xs and must not be re-created
213	our @CB_GLOBAL = (); # registry for all global events
214	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
215	our @CB_PLAYER = ();
216	our @CB_TYPE = (); # registry for type (cf-object class) based events
217	our @CB_MAP = ();
218
219	my %attachment;
220
221	sub _attach_cb($\%$$$) {
222	my ($registry, $undo, $event, $prio, $cb) = @_;
223
224	use sort 'stable';
225
226	$cb = [$prio, $cb];
227
228	@{$registry->[$event]} = sort
229	{ $a->[0] cmp $b->[0] }
230	@{$registry->[$event] || []}, $cb;
231
232	push @{$undo->{cb}}, [$event, $cb];
233	}
234
235	# attach handles attaching event callbacks
236	# the only thing the caller has to do is pass the correct
237	# registry (== where the callback attaches to).
238	sub _attach(\@$@) {
239	my ($registry, $klass, @arg) = @_;
240
241	my $prio = 0;
242
243	my %undo = (
244	registry => $registry,
245	cb => [],
246	);
247
248	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
249
250	while (@arg) {
251	my $type = shift @arg;
252
253	if ($type eq "prio") {
254	$prio = shift @arg;
255
256	} elsif ($type eq "package") {
257	my $pkg = shift @arg;
258
259	while (my ($name, $id) = each %cb_id) {
260	if (my $cb = $pkg->can ($name)) {
261	_attach_cb $registry, %undo, $id, $prio, $cb;
262	}
263	}	501	}
264
265	} elsif (exists $cb_id{$type}) {
266	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
267
268	} elsif (ref $type) {
269	warn "attaching objects not supported, ignoring.\n";
270
271	} else {
272	shift @arg;
273	warn "attach argument '$type' not supported, ignoring.\n";
274	}
275	}
276
277	\%undo
278	}
279
280	sub _attach_attachment {
281	my ($obj, $name, %arg) = @_;
282
283	return if exists $obj->{_attachment}{$name};
284
285	my $res;
286
287	if (my $attach = $attachment{$name}) {
288	my $registry = $obj->registry;
289
290	for (@$attach) {
291	my ($klass, @attach) = @$_;
292	$res = _attach @$registry, $klass, @attach;
293	}
294
295	$obj->{$name} = \%arg;
296	} else {
297	warn "object uses attachment '$name' that is not available, postponing.\n";
298	}
299
300	$obj->{_attachment}{$name} = undef;
301
302	$res->{attachment} = $name;
303	$res
304	}
305
306	*cf::object::attach =
307	*cf::player::attach =
308	*cf::map::attach = sub {
309	my ($obj, $name, %arg) = @_;
310
311	_attach_attachment $obj, $name, %arg;
312	};
313
314	# all those should be optimised
315	*cf::object::detach =
316	*cf::player::detach =
317	*cf::map::detach = sub {
318	my ($obj, $name) = @_;
319
320	delete $obj->{_attachment}{$name};
321	reattach ($obj);
322	};
323
324	*cf::object::attached =
325	*cf::player::attached =
326	*cf::map::attached = sub {
327	my ($obj, $name) = @_;
328
329	exists $obj->{_attachment}{$name}
330	};
331
332	sub attach_global {
333	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
334	}
335
336	sub attach_to_type {
337	my $type = shift;
338	my $subtype = shift;
339
340	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
341	}
342
343	sub attach_to_objects {
344	_attach @CB_OBJECT, KLASS_OBJECT, @_
345	}
346
347	sub attach_to_players {
348	_attach @CB_PLAYER, KLASS_PLAYER, @_
349	}
350
351	sub attach_to_maps {
352	_attach @CB_MAP, KLASS_MAP, @_
353	}
354
355	sub register_attachment {
356	my $name = shift;
357
358	$attachment{$name} = [[KLASS_OBJECT, @_]];
359	}
360
361	sub register_player_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_PLAYER, @_]];
365	}
366
367	sub register_map_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_MAP, @_]];
371	}
372
373	our $override;
374	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
375
376	sub override {
377	$override = 1;
378	@invoke_results = ();
379	}
380
381	sub do_invoke {
382	my $event = shift;
383	my $callbacks = shift;
384
385	@invoke_results = ();
386
387	local $override;
388
389	for (@$callbacks) {
390	eval { &{$_->[1]} };
391
392	if ($@) {
393	warn "$@";
394	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
395	override;
396	}
397
398	return 1 if $override;
399	}
400
401	0	502	}
402	}
403		503
404	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	504	=item $attachable->valid
405
406	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
407
408	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
409
410	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
411
412	Generate a global/object/player/map-specific event with the given arguments.
413
414	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
415	removed in future versions), and there is no public API to access override
416	results (if you must, access C<@cf::invoke_results> directly).
417
418	=back
419
420	=head2 methods valid for all pointers
421
422	=over 4
423
424	=item $object->valid
425
426	=item $player->valid
427
428	=item $map->valid
429		505
430	Just because you have a perl object does not mean that the corresponding	506	Just because you have a perl object does not mean that the corresponding
431	C-level object still exists. If you try to access an object that has no	507	C-level object still exists. If you try to access an object that has no
432	valid C counterpart anymore you get an exception at runtime. This method	508	valid C counterpart anymore you get an exception at runtime. This method
433	can be used to test for existence of the C object part without causing an	509	can be used to test for existence of the C object part without causing an
434	exception.	510	exception.
435		511
		512	=cut
		513
		514	# the following variables are defined in .xs and must not be re-created
		515	our @CB_GLOBAL = (); # registry for all global events
		516	our @CB_ATTACHABLE = (); # registry for all attachables
		517	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		518	our @CB_PLAYER = ();
		519	our @CB_CLIENT = ();
		520	our @CB_TYPE = (); # registry for type (cf-object class) based events
		521	our @CB_MAP = ();
		522
		523	my %attachment;
		524
		525	sub cf::attachable::thawer_merge {
		526	# simply override everything except _meta
		527	local $_[0]{_meta};
		528	%{$_[0]} = %{$_[1]};
		529	}
		530
		531	sub _attach_cb($$$$) {
		532	my ($registry, $event, $prio, $cb) = @_;
		533
		534	use sort 'stable';
		535
		536	$cb = [$prio, $cb];
		537
		538	@{$registry->[$event]} = sort
		539	{ $a->[0] cmp $b->[0] }
		540	@{$registry->[$event] || []}, $cb;
		541	}
		542
		543	# hack
		544	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		545
		546	# attach handles attaching event callbacks
		547	# the only thing the caller has to do is pass the correct
		548	# registry (== where the callback attaches to).
		549	sub _attach {
		550	my ($registry, $klass, @arg) = @_;
		551
		552	my $object_type;
		553	my $prio = 0;
		554	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		555
		556	#TODO: get rid of this hack
		557	if ($attachable_klass{$klass}) {
		558	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		559	}
		560
		561	while (@arg) {
		562	my $type = shift @arg;
		563
		564	if ($type eq "prio") {
		565	$prio = shift @arg;
		566
		567	} elsif ($type eq "type") {
		568	$object_type = shift @arg;
		569	$registry = $CB_TYPE[$object_type] ||= [];
		570
		571	} elsif ($type eq "subtype") {
		572	defined $object_type or Carp::croak "subtype specified without type";
		573	my $object_subtype = shift @arg;
		574	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		575
		576	} elsif ($type eq "package") {
		577	my $pkg = shift @arg;
		578
		579	while (my ($name, $id) = each %cb_id) {
		580	if (my $cb = $pkg->can ($name)) {
		581	_attach_cb $registry, $id, $prio, $cb;
		582	}
		583	}
		584
		585	} elsif (exists $cb_id{$type}) {
		586	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		587
		588	} elsif (ref $type) {
		589	warn "attaching objects not supported, ignoring.\n";
		590
		591	} else {
		592	shift @arg;
		593	warn "attach argument '$type' not supported, ignoring.\n";
		594	}
		595	}
		596	}
		597
		598	sub _object_attach {
		599	my ($obj, $name, %arg) = @_;
		600
		601	return if exists $obj->{_attachment}{$name};
		602
		603	if (my $attach = $attachment{$name}) {
		604	my $registry = $obj->registry;
		605
		606	for (@$attach) {
		607	my ($klass, @attach) = @$_;
		608	_attach $registry, $klass, @attach;
		609	}
		610
		611	$obj->{$name} = \%arg;
		612	} else {
		613	warn "object uses attachment '$name' that is not available, postponing.\n";
		614	}
		615
		616	$obj->{_attachment}{$name} = undef;
		617	}
		618
		619	sub cf::attachable::attach {
		620	if (ref $_[0]) {
		621	_object_attach @_;
		622	} else {
		623	_attach shift->_attach_registry, @_;
		624	}
		625	};
		626
		627	# all those should be optimised
		628	sub cf::attachable::detach {
		629	my ($obj, $name) = @_;
		630
		631	if (ref $obj) {
		632	delete $obj->{_attachment}{$name};
		633	reattach ($obj);
		634	} else {
		635	Carp::croak "cannot, currently, detach class attachments";
		636	}
		637	};
		638
		639	sub cf::attachable::attached {
		640	my ($obj, $name) = @_;
		641
		642	exists $obj->{_attachment}{$name}
		643	}
		644
		645	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		646	eval "#line " . __LINE__ . " 'cf.pm'
		647	sub cf::\L$klass\E::_attach_registry {
		648	(\\\@CB_$klass, KLASS_$klass)
		649	}
		650
		651	sub cf::\L$klass\E::attachment {
		652	my \$name = shift;
		653
		654	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		655	}
		656	";
		657	die if $@;
		658	}
		659
		660	our $override;
		661	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		662
		663	sub override {
		664	$override = 1;
		665	@invoke_results = ();
		666	}
		667
		668	sub do_invoke {
		669	my $event = shift;
		670	my $callbacks = shift;
		671
		672	@invoke_results = ();
		673
		674	local $override;
		675
		676	for (@$callbacks) {
		677	eval { &{$_->[1]} };
		678
		679	if ($@) {
		680	warn "$@";
		681	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		682	override;
		683	}
		684
		685	return 1 if $override;
		686	}
		687
		688	0
		689	}
		690
		691	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		692
		693	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		694
		695	Generate an object-specific event with the given arguments.
		696
		697	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		698	removed in future versions), and there is no public API to access override
		699	results (if you must, access C<@cf::invoke_results> directly).
		700
436	=back	701	=back
437		702
438	=cut	703	=cut
439
440	*cf::object::valid =
441	*cf::player::valid =
442	*cf::map::valid = \&cf::_valid;
443		704
444	#############################################################################	705	#############################################################################
445	# object support	706	# object support
446		707
447	sub instantiate {
448	my ($obj, $data) = @_;
449
450	$data = from_json $data;
451
452	for (@$data) {
453	my ($name, $args) = @$_;
454
455	$obj->attach ($name, %{$args || {} });
456	}
457	}
458
459	# basically do the same as instantiate, without calling instantiate
460	sub reattach {	708	sub reattach {
		709	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	710	my ($obj) = @_;
		711
		712	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		713
462	my $registry = $obj->registry;	714	my $registry = $obj->registry;
463		715
464	@$registry = ();	716	@$registry = ();
465		717
466	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	718	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
467		719
468	for my $name (keys %{ $obj->{_attachment} || {} }) {	720	for my $name (keys %{ $obj->{_attachment} || {} }) {
469	if (my $attach = $attachment{$name}) {	721	if (my $attach = $attachment{$name}) {
470	for (@$attach) {	722	for (@$attach) {
471	my ($klass, @attach) = @$_;	723	my ($klass, @attach) = @$_;
472	_attach @$registry, $klass, @attach;	724	_attach $registry, $klass, @attach;
473	}	725	}
474	} else {	726	} else {
475	warn "object uses attachment '$name' that is not available, postponing.\n";	727	warn "object uses attachment '$name' that is not available, postponing.\n";
476	}	728	}
477	}	729	}
478	}	730	}
479		731
480	sub object_freezer_save {	732	cf::attachable->attach (
481	my ($filename, $rdata, $objs) = @_;
482
483	if (length $$rdata) {
484	warn sprintf "saving %s (%d,%d)\n",
485	$filename, length $$rdata, scalar @$objs;
486
487	if (open my $fh, ">:raw", "$filename~") {
488	chmod SAVE_MODE, $fh;
489	syswrite $fh, $$rdata;
490	close $fh;
491
492	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
493	chmod SAVE_MODE, $fh;
494	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
495	close $fh;
496	rename "$filename.pst~", "$filename.pst";
497	} else {
498	unlink "$filename.pst";
499	}
500
501	rename "$filename~", $filename;
502	} else {
503	warn "FATAL: $filename~: $!\n";
504	}
505	} else {
506	unlink $filename;
507	unlink "$filename.pst";
508	}
509	}
510
511	sub object_thawer_load {
512	my ($filename) = @_;
513
514	local $/;
515
516	my $av;
517
518	#TODO: use sysread etc.
519	if (open my $data, "<:raw:perlio", $filename) {
520	$data = <$data>;
521	if (open my $pst, "<:raw:perlio", "$filename.pst") {
522	$av = eval { (Storable::thaw <$pst>)->{objs} };
523	}
524	return ($data, $av);
525	}
526
527	()
528	}
529
530	attach_to_objects
531	prio => -1000000,	733	prio => -1000000,
		734	on_instantiate => sub {
		735	my ($obj, $data) = @_;
		736
		737	$data = from_json $data;
		738
		739	for (@$data) {
		740	my ($name, $args) = @$_;
		741
		742	$obj->attach ($name, %{$args || {} });
		743	}
		744	},
		745	on_reattach => \&reattach,
532	on_clone => sub {	746	on_clone => sub {
533	my ($src, $dst) = @_;	747	my ($src, $dst) = @_;
534		748
535	@{$dst->registry} = @{$src->registry};	749	@{$dst->registry} = @{$src->registry};
536		750
537	%$dst = %$src;	751	%$dst = %$src;
538		752
539	%{$dst->{_attachment}} = %{$src->{_attachment}}	753	%{$dst->{_attachment}} = %{$src->{_attachment}}
540	if exists $src->{_attachment};	754	if exists $src->{_attachment};
541	},	755	},
542	;	756	);
		757
		758	sub object_freezer_save {
		759	my ($filename, $rdata, $objs) = @_;
		760
		761	sync_job {
		762	if (length $$rdata) {
		763	warn sprintf "saving %s (%d,%d)\n",
		764	$filename, length $$rdata, scalar @$objs;
		765
		766	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		767	chmod SAVE_MODE, $fh;
		768	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		769	aio_fsync $fh if $cf::USE_FSYNC;
		770	close $fh;
		771
		772	if (@$objs) {
		773	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		774	chmod SAVE_MODE, $fh;
		775	my $data = Storable::nfreeze { version => 1, objs => $objs };
		776	aio_write $fh, 0, (length $data), $data, 0;
		777	aio_fsync $fh if $cf::USE_FSYNC;
		778	close $fh;
		779	aio_rename "$filename.pst~", "$filename.pst";
		780	}
		781	} else {
		782	aio_unlink "$filename.pst";
		783	}
		784
		785	aio_rename "$filename~", $filename;
		786	} else {
		787	warn "FATAL: $filename~: $!\n";
		788	}
		789	} else {
		790	aio_unlink $filename;
		791	aio_unlink "$filename.pst";
		792	}
		793	}
		794	}
		795
		796	sub object_freezer_as_string {
		797	my ($rdata, $objs) = @_;
		798
		799	use Data::Dumper;
		800
		801	$$rdata . Dumper $objs
		802	}
		803
		804	sub object_thawer_load {
		805	my ($filename) = @_;
		806
		807	my ($data, $av);
		808
		809	(aio_load $filename, $data) >= 0
		810	or return;
		811
		812	unless (aio_stat "$filename.pst") {
		813	(aio_load "$filename.pst", $av) >= 0
		814	or return;
		815	$av = eval { (Storable::thaw $av)->{objs} };
		816	}
		817
		818	warn sprintf "loading %s (%d)\n",
		819	$filename, length $data, scalar @{$av || []};#d#
		820	return ($data, $av);
		821	}
543		822
544	#############################################################################	823	#############################################################################
545	# old plug-in events	824	# command handling &c
546		825
547	sub inject_event {	826	=item cf::register_command $name => \&callback($ob,$args);
548	my $extension = shift;
549	my $event_code = shift;
550		827
551	my $cb = $hook[$event_code]{$extension}	828	Register a callback for execution when the client sends the user command
552	or return;	829	$name.
553		830
554	&$cb	831	=cut
555	}
556
557	sub inject_global_event {
558	my $event = shift;
559
560	my $cb = $hook[$event]
561	or return;
562
563	List::Util::max map &$_, values %$cb
564	}
565
566	sub inject_command {
567	my ($name, $obj, $params) = @_;
568
569	for my $cmd (@{ $command{$name} }) {
570	$cmd->[1]->($obj, $params);
571	}
572
573	-1
574	}
575		832
576	sub register_command {	833	sub register_command {
577	my ($name, $time, $cb) = @_;	834	my ($name, $cb) = @_;
578		835
579	my $caller = caller;	836	my $caller = caller;
580	#warn "registering command '$name/$time' to '$caller'";	837	#warn "registering command '$name/$time' to '$caller'";
581		838
582	push @{ $command{$name} }, [$time, $cb, $caller];	839	push @{ $COMMAND{$name} }, [$caller, $cb];
583	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
584	}	840	}
		841
		842	=item cf::register_extcmd $name => \&callback($pl,$packet);
		843
		844	Register a callbackf ro execution when the client sends an extcmd packet.
		845
		846	If the callback returns something, it is sent back as if reply was being
		847	called.
		848
		849	=cut
585		850
586	sub register_extcmd {	851	sub register_extcmd {
587	my ($name, $cb) = @_;	852	my ($name, $cb) = @_;
588		853
589	my $caller = caller;	854	$EXTCMD{$name} = $cb;
590	#warn "registering extcmd '$name' to '$caller'";
591
592	$extcmd{$name} = [$cb, $caller];
593	}	855	}
594		856
595	sub register {	857	cf::player->attach (
596	my ($base, $pkg) = @_;	858	on_command => sub {
		859	my ($pl, $name, $params) = @_;
597		860
598	#TODO	861	my $cb = $COMMAND{$name}
599	}	862	or return;
		863
		864	for my $cmd (@$cb) {
		865	$cmd->[1]->($pl->ob, $params);
		866	}
		867
		868	cf::override;
		869	},
		870	on_extcmd => sub {
		871	my ($pl, $buf) = @_;
		872
		873	my $msg = eval { from_json $buf };
		874
		875	if (ref $msg) {
		876	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		877	if (my %reply = $cb->($pl, $msg)) {
		878	$pl->ext_reply ($msg->{msgid}, %reply);
		879	}
		880	}
		881	} else {
		882	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		883	}
		884
		885	cf::override;
		886	},
		887	);
600		888
601	sub load_extension {	889	sub load_extension {
602	my ($path) = @_;	890	my ($path) = @_;
603		891
604	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	892	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
605	my $base = $1;	893	my $base = $1;
606	my $pkg = $1;	894	my $pkg = $1;
607	$pkg =~ s/[^[:word:]]/_/g;	895	$pkg =~ s/[^[:word:]]/_/g;
608	$pkg = "ext::$pkg";	896	$pkg = "ext::$pkg";
609		897
610	warn "loading '$path' into '$pkg'\n";	898	warn "... loading '$path' into '$pkg'\n";
611		899
612	open my $fh, "<:utf8", $path	900	open my $fh, "<:utf8", $path
613	or die "$path: $!";	901	or die "$path: $!";
614		902
615	my $source =	903	my $source =
616	"package $pkg; use strict; use utf8;\n"	904	"package $pkg; use strict; use utf8;\n"
617	. "#line 1 \"$path\"\n{\n"	905	. "#line 1 \"$path\"\n{\n"
618	. (do { local $/; <$fh> })	906	. (do { local $/; <$fh> })
619	. "\n};\n1";	907	. "\n};\n1";
620		908
621	eval $source	909	unless (eval $source) {
622	or die "$path: $@";	910	my $msg = $@ ? "$path: $@\n"
623		911	: "extension disabled.\n";
624	push @exts, $pkg;	912	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
625	$ext_pkg{$base} = $pkg;	913	warn $@;
626		914	warn "mandatory extension failed to load, exiting.\n";
627	# no strict 'refs';	915	exit 1;
628	# @{"$pkg\::ISA"} = ext::;	916	}
629		917	die $@;
630	register $base, $pkg;
631	}
632
633	sub unload_extension {
634	my ($pkg) = @_;
635
636	warn "removing extension $pkg\n";
637
638	# remove hooks
639	#TODO
640	# for my $idx (0 .. $#PLUGIN_EVENT) {
641	# delete $hook[$idx]{$pkg};
642	# }	918	}
643		919
644	# remove commands	920	push @EXTS, $pkg;
645	for my $name (keys %command) {
646	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
647
648	if (@cb) {
649	$command{$name} = \@cb;
650	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
651	} else {
652	delete $command{$name};
653	delete $COMMAND{"$name\000"};
654	}
655	}
656
657	# remove extcmds
658	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
659	delete $extcmd{$name};
660	}
661
662	if (my $cb = $pkg->can ("unload")) {
663	eval {
664	$cb->($pkg);
665	1
666	} or warn "$pkg unloaded, but with errors: $@";
667	}
668
669	Symbol::delete_package $pkg;
670	}	921	}
671		922
672	sub load_extensions {	923	sub load_extensions {
673	my $LIBDIR = maps_directory "perl";
674
675	for my $ext (<$LIBDIR/*.ext>) {	924	for my $ext (<$LIBDIR/*.ext>) {
676	next unless -r $ext;	925	next unless -r $ext;
677	eval {	926	eval {
678	load_extension $ext;	927	load_extension $ext;
679	1	928	1
680	} or warn "$ext not loaded: $@";	929	} or warn "$ext not loaded: $@";
681	}	930	}
682	}	931	}
683		932
684	sub _perl_reload(&) {	933	#############################################################################
		934
		935	=head2 CORE EXTENSIONS
		936
		937	Functions and methods that extend core crossfire objects.
		938
		939	=cut
		940
		941	package cf::player;
		942
		943	use Coro::AIO;
		944
		945	=head3 cf::player
		946
		947	=over 4
		948
		949	=item cf::player::find $login
		950
		951	Returns the given player object, loading it if necessary (might block).
		952
		953	=cut
		954
		955	sub playerdir($) {
		956	cf::localdir
		957	. "/"
		958	. cf::playerdir
		959	. "/"
		960	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		961	}
		962
		963	sub path($) {
		964	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		965
		966	(playerdir $login) . "/playerdata"
		967	}
		968
		969	sub find_active($) {
		970	$cf::PLAYER{$_[0]}
		971	and $cf::PLAYER{$_[0]}->active
		972	and $cf::PLAYER{$_[0]}
		973	}
		974
		975	sub exists($) {
		976	my ($login) = @_;
		977
		978	$cf::PLAYER{$login}
		979	or cf::sync_job { !aio_stat path $login }
		980	}
		981
		982	sub find($) {
		983	return $cf::PLAYER{$_[0]} || do {
		984	my $login = $_[0];
		985
		986	my $guard = cf::lock_acquire "user_find:$login";
		987
		988	$cf::PLAYER{$_[0]} || do {
		989	# rename old playerfiles to new ones
		990	#TODO: remove when no longer required
		991	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		992	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		993	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		994	aio_unlink +(playerdir $login) . "/$login.pl";
		995
		996	my $pl = load_pl path $login
		997	or return;
		998	$cf::PLAYER{$login} = $pl
		999	}
		1000	}
		1001	}
		1002
		1003	sub save($) {
		1004	my ($pl) = @_;
		1005
		1006	return if $pl->{deny_save};
		1007
		1008	my $path = path $pl;
		1009	my $guard = cf::lock_acquire "user_save:$path";
		1010
		1011	return if $pl->{deny_save};
		1012
		1013	aio_mkdir playerdir $pl, 0770;
		1014	$pl->{last_save} = $cf::RUNTIME;
		1015
		1016	$pl->save_pl ($path);
		1017	Coro::cede;
		1018	}
		1019
		1020	sub new($) {
		1021	my ($login) = @_;
		1022
		1023	my $self = create;
		1024
		1025	$self->ob->name ($login);
		1026	$self->{deny_save} = 1;
		1027
		1028	$cf::PLAYER{$login} = $self;
		1029
		1030	$self
		1031	}
		1032
		1033	=item $pl->quit_character
		1034
		1035	Nukes the player without looking back. If logged in, the connection will
		1036	be destroyed. May block for a long time.
		1037
		1038	=cut
		1039
		1040	sub quit_character {
		1041	my ($pl) = @_;
		1042
		1043	my $name = $pl->ob->name;
		1044
		1045	$pl->{deny_save} = 1;
		1046	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1047
		1048	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1049	$pl->deactivate;
		1050	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1051	$pl->ns->destroy if $pl->ns;
		1052
		1053	my $path = playerdir $pl;
		1054	my $temp = "$path~$cf::RUNTIME~deleting~";
		1055	aio_rename $path, $temp;
		1056	delete $cf::PLAYER{$pl->ob->name};
		1057	$pl->destroy;
		1058
		1059	my $prefix = qr<^~\Q$name\E/>;
		1060
		1061	# nuke player maps
		1062	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1063
		1064	IO::AIO::aio_rmtree $temp;
		1065	}
		1066
		1067	=item $pl->kick
		1068
		1069	Kicks a player out of the game. This destroys the connection.
		1070
		1071	=cut
		1072
		1073	sub kick {
		1074	my ($pl, $kicker) = @_;
		1075
		1076	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1077	$pl->killer ("kicked");
		1078	$pl->ns->destroy;
		1079	}
		1080
		1081	=item cf::player::list_logins
		1082
		1083	Returns am arrayref of all valid playernames in the system, can take a
		1084	while and may block, so not sync_job-capable, ever.
		1085
		1086	=cut
		1087
		1088	sub list_logins {
		1089	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1090	or return [];
		1091
		1092	my @logins;
		1093
		1094	for my $login (@$dirs) {
		1095	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1096	aio_read $fh, 0, 512, my $buf, 0 or next;
		1097	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1098
		1099	utf8::decode $login;
		1100	push @logins, $login;
		1101	}
		1102
		1103	\@logins
		1104	}
		1105
		1106	=item $player->maps
		1107
		1108	Returns an arrayref of map paths that are private for this
		1109	player. May block.
		1110
		1111	=cut
		1112
		1113	sub maps($) {
		1114	my ($pl) = @_;
		1115
		1116	$pl = ref $pl ? $pl->ob->name : $pl;
		1117
		1118	my $files = aio_readdir playerdir $pl
		1119	or return;
		1120
		1121	my @paths;
		1122
		1123	for (@$files) {
		1124	utf8::decode $_;
		1125	next if /\.(?:pl|pst)$/;
		1126	next unless /^$PATH_SEP/o;
		1127
		1128	push @paths, cf::map::normalise "~$pl/$_";
		1129	}
		1130
		1131	\@paths
		1132	}
		1133
		1134	=item $player->ext_reply ($msgid, %msg)
		1135
		1136	Sends an ext reply to the player.
		1137
		1138	=cut
		1139
		1140	sub ext_reply($$%) {
		1141	my ($self, $id, %msg) = @_;
		1142
		1143	$msg{msgid} = $id;
		1144
		1145	$self->send ("ext " . cf::to_json \%msg);
		1146	}
		1147
		1148	=item $player->ext_event ($type, %msg)
		1149
		1150	Sends an ext event to the client.
		1151
		1152	=cut
		1153
		1154	sub ext_event($$%) {
		1155	my ($self, $type, %msg) = @_;
		1156
		1157	$self->ns->ext_event ($type, %msg);
		1158	}
		1159
		1160	=head3 cf::region
		1161
		1162	=over 4
		1163
		1164	=cut
		1165
		1166	package cf::region;
		1167
		1168	=item cf::region::find_by_path $path
		1169
		1170	Tries to decuce the probable region for a map knowing only its path.
		1171
		1172	=cut
		1173
		1174	sub find_by_path($) {
		1175	my ($path) = @_;
		1176
		1177	my ($match, $specificity);
		1178
		1179	for my $region (list) {
		1180	if ($region->match && $path =~ $region->match) {
		1181	($match, $specificity) = ($region, $region->specificity)
		1182	if $region->specificity > $specificity;
		1183	}
		1184	}
		1185
		1186	$match
		1187	}
		1188
		1189	=back
		1190
		1191	=head3 cf::map
		1192
		1193	=over 4
		1194
		1195	=cut
		1196
		1197	package cf::map;
		1198
		1199	use Fcntl;
		1200	use Coro::AIO;
		1201
		1202	use overload
		1203	'""' => \&as_string,
		1204	fallback => 1;
		1205
		1206	our $MAX_RESET = 3600;
		1207	our $DEFAULT_RESET = 3000;
		1208
		1209	sub generate_random_map {
		1210	my ($self, $rmp) = @_;
		1211	# mit "rum" bekleckern, nicht
		1212	$self->_create_random_map (
		1213	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1214	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1215	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1216	$rmp->{exit_on_final_map},
		1217	$rmp->{xsize}, $rmp->{ysize},
		1218	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1219	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1220	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1221	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1222	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1223	(cf::region::find $rmp->{region}), $rmp->{custom}
		1224	)
		1225	}
		1226
		1227	=item cf::map->register ($regex, $prio)
		1228
		1229	Register a handler for the map path matching the given regex at the
		1230	givne priority (higher is better, built-in handlers have priority 0, the
		1231	default).
		1232
		1233	=cut
		1234
		1235	sub register {
		1236	my (undef, $regex, $prio) = @_;
		1237	my $pkg = caller;
		1238
		1239	no strict;
		1240	push @{"$pkg\::ISA"}, __PACKAGE__;
		1241
		1242	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1243	}
		1244
		1245	# also paths starting with '/'
		1246	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1247
		1248	sub thawer_merge {
		1249	my ($self, $merge) = @_;
		1250
		1251	# we have to keep some variables in memory intact
		1252	local $self->{path};
		1253	local $self->{load_path};
		1254	local $self->{deny_save};
		1255	local $self->{deny_reset};
		1256
		1257	$self->SUPER::thawer_merge ($merge);
		1258	}
		1259
		1260	sub normalise {
		1261	my ($path, $base) = @_;
		1262
		1263	$path = "$path"; # make sure its a string
		1264
		1265	$path =~ s/\.map$//;
		1266
		1267	# map plan:
		1268	#
		1269	# /! non-realised random map exit (special hack!)
		1270	# {... are special paths that are not being touched
		1271	# ?xxx/... are special absolute paths
		1272	# ?random/... random maps
		1273	# /... normal maps
		1274	# ~user/... per-player map of a specific user
		1275
		1276	$path =~ s/$PATH_SEP/\//go;
		1277
		1278	# treat it as relative path if it starts with
		1279	# something that looks reasonable
		1280	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1281	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1282
		1283	$base =~ s{[^/]+/?$}{};
		1284	$path = "$base/$path";
		1285	}
		1286
		1287	for ($path) {
		1288	redo if s{//}{/};
		1289	redo if s{/\.?/}{/};
		1290	redo if s{/[^/]+/\.\./}{/};
		1291	}
		1292
		1293	$path
		1294	}
		1295
		1296	sub new_from_path {
		1297	my (undef, $path, $base) = @_;
		1298
		1299	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1300
		1301	$path = normalise $path, $base;
		1302
		1303	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1304	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1305	my $self = bless cf::map::new, $pkg;
		1306	$self->{path} = $path; $self->path ($path);
		1307	$self->init; # pass $1 etc.
		1308	return $self;
		1309	}
		1310	}
		1311
		1312	Carp::carp "unable to resolve path '$path' (base '$base').";
		1313	()
		1314	}
		1315
		1316	sub init {
		1317	my ($self) = @_;
		1318
		1319	$self
		1320	}
		1321
		1322	sub as_string {
		1323	my ($self) = @_;
		1324
		1325	"$self->{path}"
		1326	}
		1327
		1328	# the displayed name, this is a one way mapping
		1329	sub visible_name {
		1330	&as_string
		1331	}
		1332
		1333	# the original (read-only) location
		1334	sub load_path {
		1335	my ($self) = @_;
		1336
		1337	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1338	}
		1339
		1340	# the temporary/swap location
		1341	sub save_path {
		1342	my ($self) = @_;
		1343
		1344	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1345	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1346	}
		1347
		1348	# the unique path, undef == no special unique path
		1349	sub uniq_path {
		1350	my ($self) = @_;
		1351
		1352	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1353	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1354	}
		1355
		1356	# and all this just because we cannot iterate over
		1357	# all maps in C++...
		1358	sub change_all_map_light {
		1359	my ($change) = @_;
		1360
		1361	$_->change_map_light ($change)
		1362	for grep $_->outdoor, values %cf::MAP;
		1363	}
		1364
		1365	sub unlink_save {
		1366	my ($self) = @_;
		1367
		1368	utf8::encode (my $save = $self->save_path);
		1369	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1370	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1371	}
		1372
		1373	sub load_header_from($) {
		1374	my ($self, $path) = @_;
		1375
		1376	utf8::encode $path;
		1377	#aio_open $path, O_RDONLY, 0
		1378	# or return;
		1379
		1380	$self->_load_header ($path)
		1381	or return;
		1382
		1383	$self->{load_path} = $path;
		1384
		1385	1
		1386	}
		1387
		1388	sub load_header_orig {
		1389	my ($self) = @_;
		1390
		1391	$self->load_header_from ($self->load_path)
		1392	}
		1393
		1394	sub load_header_temp {
		1395	my ($self) = @_;
		1396
		1397	$self->load_header_from ($self->save_path)
		1398	}
		1399
		1400	sub prepare_temp {
		1401	my ($self) = @_;
		1402
		1403	$self->last_access ((delete $self->{last_access})
		1404	|| $cf::RUNTIME); #d#
		1405	# safety
		1406	$self->{instantiate_time} = $cf::RUNTIME
		1407	if $self->{instantiate_time} > $cf::RUNTIME;
		1408	}
		1409
		1410	sub prepare_orig {
		1411	my ($self) = @_;
		1412
		1413	$self->{load_original} = 1;
		1414	$self->{instantiate_time} = $cf::RUNTIME;
		1415	$self->last_access ($cf::RUNTIME);
		1416	$self->instantiate;
		1417	}
		1418
		1419	sub load_header {
		1420	my ($self) = @_;
		1421
		1422	if ($self->load_header_temp) {
		1423	$self->prepare_temp;
		1424	} else {
		1425	$self->load_header_orig
		1426	or return;
		1427	$self->prepare_orig;
		1428	}
		1429
		1430	$self->default_region (cf::region::find_by_path $self->{path})
		1431	unless $self->default_region;
		1432
		1433	1
		1434	}
		1435
		1436	sub find;
		1437	sub find {
		1438	my ($path, $origin) = @_;
		1439
		1440	$path = normalise $path, $origin && $origin->path;
		1441
		1442	cf::lock_wait "map_find:$path";
		1443
		1444	$cf::MAP{$path} || do {
		1445	my $guard = cf::lock_acquire "map_find:$path";
		1446	my $map = new_from_path cf::map $path
		1447	or return;
		1448
		1449	$map->{last_save} = $cf::RUNTIME;
		1450
		1451	$map->load_header
		1452	or return;
		1453
		1454	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1455	# doing this can freeze the server in a sync job, obviously
		1456	#$cf::WAIT_FOR_TICK->wait;
		1457	$map->reset;
		1458	undef $guard;
		1459	return find $path;
		1460	}
		1461
		1462	$cf::MAP{$path} = $map
		1463	}
		1464	}
		1465
		1466	sub pre_load { }
		1467	sub post_load { }
		1468
		1469	sub load {
		1470	my ($self) = @_;
		1471
		1472	local $self->{deny_reset} = 1; # loading can take a long time
		1473
		1474	my $path = $self->{path};
		1475	my $guard = cf::lock_acquire "map_load:$path";
		1476
		1477	return if $self->in_memory != cf::MAP_SWAPPED;
		1478
		1479	$self->in_memory (cf::MAP_LOADING);
		1480
		1481	$self->alloc;
		1482
		1483	$self->pre_load;
		1484	Coro::cede;
		1485
		1486	$self->_load_objects ($self->{load_path}, 1)
		1487	or return;
		1488
		1489	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1490	if delete $self->{load_original};
		1491
		1492	if (my $uniq = $self->uniq_path) {
		1493	utf8::encode $uniq;
		1494	if (aio_open $uniq, O_RDONLY, 0) {
		1495	$self->clear_unique_items;
		1496	$self->_load_objects ($uniq, 0);
		1497	}
		1498	}
		1499
		1500	Coro::cede;
		1501	# now do the right thing for maps
		1502	$self->link_multipart_objects;
		1503	Coro::cede;
		1504
		1505	unless ($self->{deny_activate}) {
		1506	$self->decay_objects;
		1507	$self->fix_auto_apply;
		1508	$self->update_buttons;
		1509	Coro::cede;
		1510	$self->set_darkness_map;
		1511	$self->difficulty ($self->estimate_difficulty)
		1512	unless $self->difficulty;
		1513	Coro::cede;
		1514	$self->activate;
		1515	Coro::cede;
		1516	}
		1517
		1518	$self->post_load;
		1519	Coro::cede;
		1520
		1521	$self->in_memory (cf::MAP_IN_MEMORY);
		1522	}
		1523
		1524	sub customise_for {
		1525	my ($self, $ob) = @_;
		1526
		1527	return find "~" . $ob->name . "/" . $self->{path}
		1528	if $self->per_player;
		1529
		1530	$self
		1531	}
		1532
		1533	# find and load all maps in the 3x3 area around a map
		1534	sub load_diag {
685	my ($msg) = @_;	1535	my ($map) = @_;
686		1536
687	$msg->("reloading...");	1537	my @diag; # diagonal neighbours
688		1538
689	eval {	1539	for (0 .. 3) {
690	# 1. cancel all watchers	1540	my $neigh = $map->tile_path ($_)
691	$_->cancel for Event::all_watchers;	1541	or next;
		1542	$neigh = find $neigh, $map
		1543	or next;
		1544	$neigh->load;
692		1545
693	# 2. unload all extensions	1546	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
694	for (@exts) {	1547	[$neigh->tile_path (($_ + 1) % 4), $neigh];
695	$msg->("unloading <$_>");	1548	}
696	unload_extension $_;
697	}
698		1549
699	# 3. unload all modules loaded from $LIBDIR	1550	for (@diag) {
700	while (my ($k, $v) = each %INC) {	1551	my $neigh = find @$_
701	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1552	or next;
		1553	$neigh->load;
		1554	}
		1555	}
702		1556
703	$msg->("removing <$k>");	1557	sub find_sync {
704	delete $INC{$k};	1558	my ($path, $origin) = @_;
705		1559
706	$k =~ s/\.pm$//;	1560	cf::sync_job { find $path, $origin }
707	$k =~ s/\//::/g;	1561	}
708		1562
709	if (my $cb = $k->can ("unload_module")) {	1563	sub do_load_sync {
710	$cb->();	1564	my ($map) = @_;
		1565
		1566	cf::sync_job { $map->load };
		1567	}
		1568
		1569	our %MAP_PREFETCH;
		1570	our $MAP_PREFETCHER = undef;
		1571
		1572	sub find_async {
		1573	my ($path, $origin) = @_;
		1574
		1575	$path = normalise $path, $origin && $origin->{path};
		1576
		1577	if (my $map = $cf::MAP{$path}) {
		1578	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1579	}
		1580
		1581	undef $MAP_PREFETCH{$path};
		1582	$MAP_PREFETCHER ||= cf::async {
		1583	while (%MAP_PREFETCH) {
		1584	for my $path (keys %MAP_PREFETCH) {
		1585	my $map = find $path
		1586	or next;
		1587	$map->load;
		1588
		1589	delete $MAP_PREFETCH{$path};
711	}	1590	}
712
713	Symbol::delete_package $k;
714	}
715
716	# 4. get rid of safe::, as good as possible
717	Symbol::delete_package "safe::$_"
718	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
719
720	# 5. remove register_script_function callbacks
721	# TODO
722		1591	}
723	# 6. unload cf.pm "a bit"	1592	undef $MAP_PREFETCHER;
724	delete $INC{"cf.pm"};
725
726	# don't, removes xs symbols, too,
727	# and global variables created in xs
728	#Symbol::delete_package __PACKAGE__;
729
730	# 7. reload cf.pm
731	$msg->("reloading cf.pm");
732	require cf;
733
734	$msg->("load extensions");
735	cf::load_extensions;
736	};	1593	};
737	$msg->($@) if $@;	1594	$MAP_PREFETCHER->prio (6);
738		1595
739	$msg->("reloaded");	1596	()
740	};	1597	}
741		1598
742	sub perl_reload() {	1599	sub save {
743	_perl_reload {	1600	my ($self) = @_;
744	warn $_[0];	1601
745	print "$_[0]\n";	1602	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1603
		1604	$self->{last_save} = $cf::RUNTIME;
		1605
		1606	return unless $self->dirty;
		1607
		1608	my $save = $self->save_path; utf8::encode $save;
		1609	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1610
		1611	$self->{load_path} = $save;
		1612
		1613	return if $self->{deny_save};
		1614
		1615	local $self->{last_access} = $self->last_access;#d#
		1616
		1617	cf::async {
		1618	$_->contr->save for $self->players;
746	};	1619	};
747	}
748		1620
749	register_command "perl-reload", 0, sub {	1621	if ($uniq) {
750	my ($who, $arg) = @_;	1622	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
751		1623	$self->_save_objects ($uniq, cf::IO_UNIQUES);
752	if ($who->flag (FLAG_WIZ)) {
753	_perl_reload {
754	warn $_[0];
755	$who->message ($_[0]);
756	};
757	}
758	};
759
760	#############################################################################
761	# extcmd framework, basically convert ext <msg>
762	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
763
764	attach_to_players
765	on_extcmd => sub {
766	my ($pl, $buf) = @_;
767
768	my $msg = eval { from_json $buf };
769
770	if (ref $msg) {
771	if (my $cb = $extcmd{$msg->{msgtype}}) {
772	if (my %reply = $cb->[0]->($pl, $msg)) {
773	$pl->ext_reply ($msg->{msgid}, %reply);
774	}
775	}
776	} else {	1624	} else {
777	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1625	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
778	}
779
780	cf::override;
781	},	1626	}
782	;	1627	}
783		1628
784	#############################################################################	1629	sub swap_out {
785	# load/save/clean perl data associated with a map
786
787	*cf::mapsupport::on_clean = sub {
788	my ($map) = @_;	1630	my ($self) = @_;
789		1631
790	my $path = $map->tmpname;	1632	# save first because save cedes
791	defined $path or return;	1633	$self->save;
792		1634
793	unlink "$path.pst";	1635	my $lock = cf::lock_acquire "map_data:" . $self->path;
794	};
795		1636
796	attach_to_maps prio => -10000, package => cf::mapsupport::;	1637	return if $self->players;
		1638	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1639	return if $self->{deny_save};
797		1640
798	#############################################################################	1641	$self->clear;
799	# load/save perl data associated with player->ob objects	1642	$self->in_memory (cf::MAP_SWAPPED);
800
801	sub all_objects(@) {
802	@_, map all_objects ($_->inv), @_
803	}	1643	}
804		1644
805	# TODO: compatibility cruft, remove when no longer needed	1645	sub reset_at {
806	attach_to_players	1646	my ($self) = @_;
807	on_load => sub {
808	my ($pl, $path) = @_;
809		1647
810	for my $o (all_objects $pl->ob) {	1648	# TODO: safety, remove and allow resettable per-player maps
811	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1649	return 1e99 if $self->isa ("ext::map_per_player");#d#
812	$o->set_ob_key_value ("_perl_data");	1650	return 1e99 if $self->{deny_reset};
813		1651
814	%$o = %{ Storable::thaw pack "H*", $value };	1652	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
815	}	1653	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
816	}	1654
		1655	$time + $to
		1656	}
		1657
		1658	sub should_reset {
		1659	my ($self) = @_;
		1660
		1661	$self->reset_at <= $cf::RUNTIME
		1662	}
		1663
		1664	sub reset {
		1665	my ($self) = @_;
		1666
		1667	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1668
		1669	return if $self->players;
		1670	return if $self->isa ("ext::map_per_player");#d#
		1671
		1672	warn "resetting map ", $self->path;#d#
		1673
		1674	$self->in_memory (cf::MAP_SWAPPED);
		1675
		1676	# need to save uniques path
		1677	unless ($self->{deny_save}) {
		1678	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1679
		1680	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1681	if $uniq;
817	},	1682	}
818	;
819		1683
820	#############################################################################	1684	delete $cf::MAP{$self->path};
821	# core extensions - in perl
822		1685
823	=item cf::player::exists $login	1686	$self->clear;
824		1687
825	Returns true when the given account exists.	1688	$_->clear_links_to ($self) for values %cf::MAP;
826		1689
827	=cut	1690	$self->unlink_save;
828		1691	$self->destroy;
829	sub cf::player::exists($) {
830	cf::player::find $_[0]
831	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
832	}	1692	}
833		1693
		1694	my $nuke_counter = "aaaa";
		1695
		1696	sub nuke {
		1697	my ($self) = @_;
		1698
		1699	delete $cf::MAP{$self->path};
		1700
		1701	$self->unlink_save;
		1702
		1703	bless $self, "cf::map";
		1704	delete $self->{deny_reset};
		1705	$self->{deny_save} = 1;
		1706	$self->reset_timeout (1);
		1707	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1708
		1709	$cf::MAP{$self->path} = $self;
		1710
		1711	$self->reset; # polite request, might not happen
		1712	}
		1713
		1714	=item cf::map::unique_maps
		1715
		1716	Returns an arrayref of paths of all shared maps that have
		1717	instantiated unique items. May block.
		1718
		1719	=cut
		1720
		1721	sub unique_maps() {
		1722	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1723	or return;
		1724
		1725	my @paths;
		1726
		1727	for (@$files) {
		1728	utf8::decode $_;
		1729	next if /\.pst$/;
		1730	next unless /^$PATH_SEP/o;
		1731
		1732	push @paths, cf::map::normalise $_;
		1733	}
		1734
		1735	\@paths
		1736	}
		1737
		1738	package cf;
		1739
		1740	=back
		1741
		1742	=head3 cf::object
		1743
		1744	=cut
		1745
		1746	package cf::object;
		1747
		1748	=over 4
		1749
		1750	=item $ob->inv_recursive
		1751
		1752	Returns the inventory of the object _and_ their inventories, recursively.
		1753
		1754	=cut
		1755
		1756	sub inv_recursive_;
		1757	sub inv_recursive_ {
		1758	map { $_, inv_recursive_ $_->inv } @_
		1759	}
		1760
		1761	sub inv_recursive {
		1762	inv_recursive_ inv $_[0]
		1763	}
		1764
		1765	package cf;
		1766
		1767	=back
		1768
		1769	=head3 cf::object::player
		1770
		1771	=over 4
		1772
834	=item $player->reply ($npc, $msg[, $flags])	1773	=item $player_object->reply ($npc, $msg[, $flags])
835		1774
836	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1775	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
837	can be C<undef>. Does the right thing when the player is currently in a	1776	can be C<undef>. Does the right thing when the player is currently in a
838	dialogue with the given NPC character.	1777	dialogue with the given NPC character.
839		1778
840	=cut	1779	=cut
841		1780
842	# rough implementation of a future "reply" method that works	1781	# rough implementation of a future "reply" method that works
843	# with dialog boxes.	1782	# with dialog boxes.
		1783	#TODO: the first argument must go, split into a $npc->reply_to ( method
844	sub cf::object::player::reply($$$;$) {	1784	sub cf::object::player::reply($$$;$) {
845	my ($self, $npc, $msg, $flags) = @_;	1785	my ($self, $npc, $msg, $flags) = @_;
846		1786
847	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1787	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
848		1788
…		…
852	$msg = $npc->name . " says: $msg" if $npc;	1792	$msg = $npc->name . " says: $msg" if $npc;
853	$self->message ($msg, $flags);	1793	$self->message ($msg, $flags);
854	}	1794	}
855	}	1795	}
856		1796
857	=item $player->ext_reply ($msgid, $msgtype, %msg)	1797	=item $player_object->may ("access")
858		1798
859	Sends an ext reply to the player.	1799	Returns wether the given player is authorized to access resource "access"
		1800	(e.g. "command_wizcast").
860		1801
861	=cut	1802	=cut
862		1803
863	sub cf::player::ext_reply($$$%) {	1804	sub cf::object::player::may {
		1805	my ($self, $access) = @_;
		1806
		1807	$self->flag (cf::FLAG_WIZ) ||
		1808	(ref $cf::CFG{"may_$access"}
		1809	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1810	: $cf::CFG{"may_$access"})
		1811	}
		1812
		1813	=item $player_object->enter_link
		1814
		1815	Freezes the player and moves him/her to a special map (C<{link}>).
		1816
		1817	The player should be reasonably safe there for short amounts of time. You
		1818	I<MUST> call C<leave_link> as soon as possible, though.
		1819
		1820	Will never block.
		1821
		1822	=item $player_object->leave_link ($map, $x, $y)
		1823
		1824	Moves the player out of the special C<{link}> map onto the specified
		1825	map. If the map is not valid (or omitted), the player will be moved back
		1826	to the location he/she was before the call to C<enter_link>, or, if that
		1827	fails, to the emergency map position.
		1828
		1829	Might block.
		1830
		1831	=cut
		1832
		1833	sub link_map {
		1834	unless ($LINK_MAP) {
		1835	$LINK_MAP = cf::map::find "{link}"
		1836	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1837	$LINK_MAP->load;
		1838	}
		1839
		1840	$LINK_MAP
		1841	}
		1842
		1843	sub cf::object::player::enter_link {
		1844	my ($self) = @_;
		1845
		1846	$self->deactivate_recursive;
		1847
		1848	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1849
		1850	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1851	if $self->map;
		1852
		1853	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1854	}
		1855
		1856	sub cf::object::player::leave_link {
		1857	my ($self, $map, $x, $y) = @_;
		1858
		1859	my $link_pos = delete $self->{_link_pos};
		1860
		1861	unless ($map) {
		1862	# restore original map position
		1863	($map, $x, $y) = @{ $link_pos || [] };
		1864	$map = cf::map::find $map;
		1865
		1866	unless ($map) {
		1867	($map, $x, $y) = @$EMERGENCY_POSITION;
		1868	$map = cf::map::find $map
		1869	or die "FATAL: cannot load emergency map\n";
		1870	}
		1871	}
		1872
		1873	($x, $y) = (-1, -1)
		1874	unless (defined $x) && (defined $y);
		1875
		1876	# use -1 or undef as default coordinates, not 0, 0
		1877	($x, $y) = ($map->enter_x, $map->enter_y)
		1878	if $x <=0 && $y <= 0;
		1879
		1880	$map->load;
		1881	$map->load_diag;
		1882
		1883	return unless $self->contr->active;
		1884	$self->activate_recursive;
		1885
		1886	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1887	$self->enter_map ($map, $x, $y);
		1888	}
		1889
		1890	cf::player->attach (
		1891	on_logout => sub {
		1892	my ($pl) = @_;
		1893
		1894	# abort map switching before logout
		1895	if ($pl->ob->{_link_pos}) {
		1896	cf::sync_job {
		1897	$pl->ob->leave_link
		1898	};
		1899	}
		1900	},
		1901	on_login => sub {
		1902	my ($pl) = @_;
		1903
		1904	# try to abort aborted map switching on player login :)
		1905	# should happen only on crashes
		1906	if ($pl->ob->{_link_pos}) {
		1907	$pl->ob->enter_link;
		1908	(async {
		1909	$pl->ob->reply (undef,
		1910	"There was an internal problem at your last logout, "
		1911	. "the server will try to bring you to your intended destination in a second.",
		1912	cf::NDI_RED);
		1913	# we need this sleep as the login has a concurrent enter_exit running
		1914	# and this sleep increases chances of the player not ending up in scorn
		1915	Coro::Timer::sleep 1;
		1916	$pl->ob->leave_link;
		1917	})->prio (2);
		1918	}
		1919	},
		1920	);
		1921
		1922	=item $player_object->goto ($path, $x, $y)
		1923
		1924	=cut
		1925
		1926	sub cf::object::player::goto {
		1927	my ($self, $path, $x, $y) = @_;
		1928
		1929	$self->enter_link;
		1930
		1931	(async {
		1932	my $map = eval {
		1933	my $map = cf::map::find $path;
		1934	$map = $map->customise_for ($self) if $map;
		1935	$map
		1936	} or
		1937	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1938
		1939	$self->leave_link ($map, $x, $y);
		1940	})->prio (1);
		1941	}
		1942
		1943	=item $player_object->enter_exit ($exit_object)
		1944
		1945	=cut
		1946
		1947	sub parse_random_map_params {
		1948	my ($spec) = @_;
		1949
		1950	my $rmp = { # defaults
		1951	xsize => (cf::rndm 15, 40),
		1952	ysize => (cf::rndm 15, 40),
		1953	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1954	#layout => string,
		1955	};
		1956
		1957	for (split /\n/, $spec) {
		1958	my ($k, $v) = split /\s+/, $_, 2;
		1959
		1960	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1961	}
		1962
		1963	$rmp
		1964	}
		1965
		1966	sub prepare_random_map {
		1967	my ($exit) = @_;
		1968
		1969	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1970
		1971	# all this does is basically replace the /! path by
		1972	# a new random map path (?random/...) with a seed
		1973	# that depends on the exit object
		1974
		1975	my $rmp = parse_random_map_params $exit->msg;
		1976
		1977	if ($exit->map) {
		1978	$rmp->{region} = $exit->region->name;
		1979	$rmp->{origin_map} = $exit->map->path;
		1980	$rmp->{origin_x} = $exit->x;
		1981	$rmp->{origin_y} = $exit->y;
		1982	}
		1983
		1984	$rmp->{random_seed} ||= $exit->random_seed;
		1985
		1986	my $data = cf::to_json $rmp;
		1987	my $md5 = Digest::MD5::md5_hex $data;
		1988	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1989
		1990	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1991	aio_write $fh, 0, (length $data), $data, 0;
		1992	undef $fh;
		1993	aio_rename "$meta~", $meta;
		1994
		1995	$exit->slaying ("?random/$md5");
		1996	$exit->msg (undef);
		1997	}
		1998	}
		1999
		2000	sub cf::object::player::enter_exit {
		2001	my ($self, $exit) = @_;
		2002
		2003	return unless $self->type == cf::PLAYER;
		2004
		2005	if ($exit->slaying eq "/!") {
		2006	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2007	# the problem is that $exit might not survive long enough
		2008	# so it needs to be done right now, right here
		2009	cf::sync_job { prepare_random_map $exit };
		2010	}
		2011
		2012	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2013	my $hp = $exit->stats->hp;
		2014	my $sp = $exit->stats->sp;
		2015
		2016	$self->enter_link;
		2017
		2018	(async {
		2019	$self->deactivate_recursive; # just to be sure
		2020	unless (eval {
		2021	$self->goto ($slaying, $hp, $sp);
		2022
		2023	1;
		2024	}) {
		2025	$self->message ("Something went wrong deep within the crossfire server. "
		2026	. "I'll try to bring you back to the map you were before. "
		2027	. "Please report this to the dungeon master!",
		2028	cf::NDI_UNIQUE | cf::NDI_RED);
		2029
		2030	warn "ERROR in enter_exit: $@";
		2031	$self->leave_link;
		2032	}
		2033	})->prio (1);
		2034	}
		2035
		2036	=head3 cf::client
		2037
		2038	=over 4
		2039
		2040	=item $client->send_drawinfo ($text, $flags)
		2041
		2042	Sends a drawinfo packet to the client. Circumvents output buffering so
		2043	should not be used under normal circumstances.
		2044
		2045	=cut
		2046
		2047	sub cf::client::send_drawinfo {
		2048	my ($self, $text, $flags) = @_;
		2049
		2050	utf8::encode $text;
		2051	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2052	}
		2053
		2054	=item $client->ext_event ($type, %msg)
		2055
		2056	Sends an exti event to the client.
		2057
		2058	=cut
		2059
		2060	sub cf::client::ext_event($$%) {
864	my ($self, $id, %msg) = @_;	2061	my ($self, $type, %msg) = @_;
865		2062
866	$msg{msgid} = $id;	2063	$msg{msgtype} = "event_$type";
867
868	$self->send ("ext " . to_json \%msg);	2064	$self->send_packet ("ext " . cf::to_json \%msg);
869	}	2065	}
870		2066
871	#############################################################################	2067	=item $success = $client->query ($flags, "text", \&cb)
872	# map scripting support	2068
		2069	Queues a query to the client, calling the given callback with
		2070	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2071	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2072
		2073	Queries can fail, so check the return code. Or don't, as queries will become
		2074	reliable at some point in the future.
		2075
		2076	=cut
		2077
		2078	sub cf::client::query {
		2079	my ($self, $flags, $text, $cb) = @_;
		2080
		2081	return unless $self->state == ST_PLAYING
		2082	|| $self->state == ST_SETUP
		2083	|| $self->state == ST_CUSTOM;
		2084
		2085	$self->state (ST_CUSTOM);
		2086
		2087	utf8::encode $text;
		2088	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2089
		2090	$self->send_packet ($self->{query_queue}[0][0])
		2091	if @{ $self->{query_queue} } == 1;
		2092	}
		2093
		2094	cf::client->attach (
		2095	on_reply => sub {
		2096	my ($ns, $msg) = @_;
		2097
		2098	# this weird shuffling is so that direct followup queries
		2099	# get handled first
		2100	my $queue = delete $ns->{query_queue}
		2101	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2102
		2103	(shift @$queue)->[1]->($msg);
		2104	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2105
		2106	push @{ $ns->{query_queue} }, @$queue;
		2107
		2108	if (@{ $ns->{query_queue} } == @$queue) {
		2109	if (@$queue) {
		2110	$ns->send_packet ($ns->{query_queue}[0][0]);
		2111	} else {
		2112	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2113	}
		2114	}
		2115	},
		2116	);
		2117
		2118	=item $client->async (\&cb)
		2119
		2120	Create a new coroutine, running the specified callback. The coroutine will
		2121	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2122	or loss of connection).
		2123
		2124	=cut
		2125
		2126	sub cf::client::async {
		2127	my ($self, $cb) = @_;
		2128
		2129	my $coro = &Coro::async ($cb);
		2130
		2131	$coro->on_destroy (sub {
		2132	delete $self->{_coro}{$coro+0};
		2133	});
		2134
		2135	$self->{_coro}{$coro+0} = $coro;
		2136
		2137	$coro
		2138	}
		2139
		2140	cf::client->attach (
		2141	on_destroy => sub {
		2142	my ($ns) = @_;
		2143
		2144	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2145	},
		2146	);
		2147
		2148	=back
		2149
		2150
		2151	=head2 SAFE SCRIPTING
		2152
		2153	Functions that provide a safe environment to compile and execute
		2154	snippets of perl code without them endangering the safety of the server
		2155	itself. Looping constructs, I/O operators and other built-in functionality
		2156	is not available in the safe scripting environment, and the number of
		2157	functions and methods that can be called is greatly reduced.
		2158
		2159	=cut
873		2160
874	our $safe = new Safe "safe";	2161	our $safe = new Safe "safe";
875	our $safe_hole = new Safe::Hole;	2162	our $safe_hole = new Safe::Hole;
876		2163
877	$SIG{FPE} = 'IGNORE';	2164	$SIG{FPE} = 'IGNORE';
878		2165
879	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2166	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
880		2167
881	# here we export the classes and methods available to script code	2168	# here we export the classes and methods available to script code
882		2169
		2170	=pod
		2171
		2172	The following functions and methods are available within a safe environment:
		2173
		2174	cf::object contr pay_amount pay_player map
		2175	cf::object::player player
		2176	cf::player peaceful
		2177	cf::map trigger
		2178
		2179	=cut
		2180
883	for (	2181	for (
884	["cf::object" => qw(contr pay_amount pay_player)],	2182	["cf::object" => qw(contr pay_amount pay_player map)],
885	["cf::object::player" => qw(player)],	2183	["cf::object::player" => qw(player)],
886	["cf::player" => qw(peaceful)],	2184	["cf::player" => qw(peaceful)],
		2185	["cf::map" => qw(trigger)],
887	) {	2186	) {
888	no strict 'refs';	2187	no strict 'refs';
889	my ($pkg, @funs) = @$_;	2188	my ($pkg, @funs) = @$_;
890	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2189	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
891	for @funs;	2190	for @funs;
892	}	2191	}
		2192
		2193	=over 4
		2194
		2195	=item @retval = safe_eval $code, [var => value, ...]
		2196
		2197	Compiled and executes the given perl code snippet. additional var/value
		2198	pairs result in temporary local (my) scalar variables of the given name
		2199	that are available in the code snippet. Example:
		2200
		2201	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2202
		2203	=cut
893		2204
894	sub safe_eval($;@) {	2205	sub safe_eval($;@) {
895	my ($code, %vars) = @_;	2206	my ($code, %vars) = @_;
896		2207
897	my $qcode = $code;	2208	my $qcode = $code;
…		…
920	}	2231	}
921		2232
922	wantarray ? @res : $res[0]	2233	wantarray ? @res : $res[0]
923	}	2234	}
924		2235
		2236	=item cf::register_script_function $function => $cb
		2237
		2238	Register a function that can be called from within map/npc scripts. The
		2239	function should be reasonably secure and should be put into a package name
		2240	like the extension.
		2241
		2242	Example: register a function that gets called whenever a map script calls
		2243	C<rent::overview>, as used by the C<rent> extension.
		2244
		2245	cf::register_script_function "rent::overview" => sub {
		2246	...
		2247	};
		2248
		2249	=cut
		2250
925	sub register_script_function {	2251	sub register_script_function {
926	my ($fun, $cb) = @_;	2252	my ($fun, $cb) = @_;
927		2253
928	no strict 'refs';	2254	no strict 'refs';
929	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2255	*{"safe::$fun"} = $safe_hole->wrap ($cb);
930	}	2256	}
931		2257
		2258	=back
		2259
		2260	=cut
		2261
932	#############################################################################	2262	#############################################################################
933	# the server's main()	2263
		2264	=head2 EXTENSION DATABASE SUPPORT
		2265
		2266	Crossfire maintains a very simple database for extension use. It can
		2267	currently store anything that can be serialised using Storable, which
		2268	excludes objects.
		2269
		2270	The parameter C<$family> should best start with the name of the extension
		2271	using it, it should be unique.
		2272
		2273	=over 4
		2274
		2275	=item $value = cf::db_get $family => $key
		2276
		2277	Returns a single value from the database.
		2278
		2279	=item cf::db_put $family => $key => $value
		2280
		2281	Stores the given C<$value> in the family.
		2282
		2283	=cut
		2284
		2285	our $DB;
		2286
		2287	sub db_init {
		2288	unless ($DB) {
		2289	$DB = BDB::db_create $DB_ENV;
		2290
		2291	cf::sync_job {
		2292	eval {
		2293	$DB->set_flags (BDB::CHKSUM);
		2294
		2295	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2296	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2297	cf::cleanup "db_open(db): $!" if $!;
		2298	};
		2299	cf::cleanup "db_open(db): $@" if $@;
		2300	};
		2301
		2302	my $path = cf::localdir . "/database.pst";
		2303	if (stat $path) {
		2304	cf::sync_job {
		2305	my $pst = Storable::retrieve $path;
		2306
		2307	cf::db_put (board => data => $pst->{board});
		2308	cf::db_put (guildrules => data => $pst->{guildrules});
		2309	cf::db_put (rent => balance => $pst->{rent}{balance});
		2310	BDB::db_env_txn_checkpoint $DB_ENV;
		2311
		2312	unlink $path;
		2313	};
		2314	}
		2315	}
		2316	}
		2317
		2318	sub db_get($$) {
		2319	my $key = "$_[0]/$_[1]";
		2320
		2321	cf::sync_job {
		2322	BDB::db_get $DB, undef, $key, my $data;
		2323
		2324	$! ? ()
		2325	: Compress::LZF::sthaw $data
		2326	}
		2327	}
		2328
		2329	sub db_put($$$) {
		2330	BDB::dbreq_pri 4;
		2331	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2332	}
		2333
		2334	#############################################################################
		2335	# the server's init and main functions
		2336
		2337	sub load_facedata {
		2338	my $path = sprintf "%s/facedata", cf::datadir;
		2339
		2340	warn "loading facedata from $path\n";
		2341
		2342	my $facedata;
		2343	0 < aio_load $path, $facedata
		2344	or die "$path: $!";
		2345
		2346	$facedata = Coro::Storable::thaw $facedata;
		2347
		2348	$facedata->{version} == 2
		2349	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2350
		2351	{
		2352	my $faces = $facedata->{faceinfo};
		2353
		2354	while (my ($face, $info) = each %$faces) {
		2355	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2356	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2357	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2358	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2359	Coro::cede;
		2360	}
		2361
		2362	while (my ($face, $info) = each %$faces) {
		2363	next unless $info->{smooth};
		2364	my $idx = cf::face::find $face
		2365	or next;
		2366	if (my $smooth = cf::face::find $info->{smooth}) {
		2367	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2368	} else {
		2369	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2370	}
		2371	Coro::cede;
		2372	}
		2373	}
		2374
		2375	{
		2376	my $anims = $facedata->{animinfo};
		2377
		2378	while (my ($anim, $info) = each %$anims) {
		2379	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2380	Coro::cede;
		2381	}
		2382
		2383	cf::anim::invalidate_all; # d'oh
		2384	}
		2385
		2386	1
		2387	}
		2388
		2389	sub reload_resources {
		2390	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2391	or die "unable to load regions file\n";#d#
		2392	load_facedata
		2393	or die "unable to load facedata\n";#d#
		2394	}
		2395
		2396	sub init {
		2397	reload_resources;
		2398	}
		2399
		2400	sub cfg_load {
		2401	open my $fh, "<:utf8", cf::confdir . "/config"
		2402	or return;
		2403
		2404	local $/;
		2405	*CFG = YAML::Syck::Load <$fh>;
		2406
		2407	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2408
		2409	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2410	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2411
		2412	if (exists $CFG{mlockall}) {
		2413	eval {
		2414	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2415	and die "WARNING: m(un)lockall failed: $!\n";
		2416	};
		2417	warn $@ if $@;
		2418	}
		2419	}
934		2420
935	sub main {	2421	sub main {
		2422	# we must not ever block the main coroutine
		2423	local $Coro::idle = sub {
		2424	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2425	(async {
		2426	Event::one_event;
		2427	})->prio (Coro::PRIO_MAX);
		2428	};
		2429
		2430	cfg_load;
		2431	db_init;
936	load_extensions;	2432	load_extensions;
		2433
		2434	$TICK_WATCHER->start;
937	Event::loop;	2435	Event::loop;
938	}	2436	}
939		2437
940	#############################################################################	2438	#############################################################################
941	# initialisation	2439	# initialisation and cleanup
942		2440
943	register "<global>", __PACKAGE__;	2441	# install some emergency cleanup handlers
		2442	BEGIN {
		2443	for my $signal (qw(INT HUP TERM)) {
		2444	Event->signal (
		2445	reentrant => 0,
		2446	data => WF_AUTOCANCEL,
		2447	signal => $signal,
		2448	prio => 0,
		2449	cb => sub {
		2450	cf::cleanup "SIG$signal";
		2451	},
		2452	);
		2453	}
		2454	}
		2455
		2456	sub emergency_save() {
		2457	my $freeze_guard = cf::freeze_mainloop;
		2458
		2459	warn "enter emergency perl save\n";
		2460
		2461	cf::sync_job {
		2462	# use a peculiar iteration method to avoid tripping on perl
		2463	# refcount bugs in for. also avoids problems with players
		2464	# and maps saved/destroyed asynchronously.
		2465	warn "begin emergency player save\n";
		2466	for my $login (keys %cf::PLAYER) {
		2467	my $pl = $cf::PLAYER{$login} or next;
		2468	$pl->valid or next;
		2469	$pl->save;
		2470	}
		2471	warn "end emergency player save\n";
		2472
		2473	warn "begin emergency map save\n";
		2474	for my $path (keys %cf::MAP) {
		2475	my $map = $cf::MAP{$path} or next;
		2476	$map->valid or next;
		2477	$map->save;
		2478	}
		2479	warn "end emergency map save\n";
		2480
		2481	warn "begin emergency database checkpoint\n";
		2482	BDB::db_env_txn_checkpoint $DB_ENV;
		2483	warn "end emergency database checkpoint\n";
		2484	};
		2485
		2486	warn "leave emergency perl save\n";
		2487	}
		2488
		2489	sub post_cleanup {
		2490	my ($make_core) = @_;
		2491
		2492	warn Carp::longmess "post_cleanup backtrace"
		2493	if $make_core;
		2494	}
		2495
		2496	sub reload() {
		2497	# can/must only be called in main
		2498	if ($Coro::current != $Coro::main) {
		2499	warn "can only reload from main coroutine";
		2500	return;
		2501	}
		2502
		2503	warn "reloading...";
		2504
		2505	warn "entering sync_job";
		2506
		2507	cf::sync_job {
		2508	cf::write_runtime; # external watchdog should not bark
		2509	cf::emergency_save;
		2510	cf::write_runtime; # external watchdog should not bark
		2511
		2512	warn "syncing database to disk";
		2513	BDB::db_env_txn_checkpoint $DB_ENV;
		2514
		2515	# if anything goes wrong in here, we should simply crash as we already saved
		2516
		2517	warn "cancelling all WF_AUTOCANCEL watchers";
		2518	for (Event::all_watchers) {
		2519	$_->cancel if $_->data & WF_AUTOCANCEL;
		2520	}
		2521
		2522	warn "flushing outstanding aio requests";
		2523	for (;;) {
		2524	BDB::flush;
		2525	IO::AIO::flush;
		2526	Coro::cede;
		2527	last unless IO::AIO::nreqs || BDB::nreqs;
		2528	warn "iterate...";
		2529	}
		2530
		2531	++$RELOAD;
		2532
		2533	warn "cancelling all extension coros";
		2534	$_->cancel for values %EXT_CORO;
		2535	%EXT_CORO = ();
		2536
		2537	warn "removing commands";
		2538	%COMMAND = ();
		2539
		2540	warn "removing ext commands";
		2541	%EXTCMD = ();
		2542
		2543	warn "unloading/nuking all extensions";
		2544	for my $pkg (@EXTS) {
		2545	warn "... unloading $pkg";
		2546
		2547	if (my $cb = $pkg->can ("unload")) {
		2548	eval {
		2549	$cb->($pkg);
		2550	1
		2551	} or warn "$pkg unloaded, but with errors: $@";
		2552	}
		2553
		2554	warn "... nuking $pkg";
		2555	Symbol::delete_package $pkg;
		2556	}
		2557
		2558	warn "unloading all perl modules loaded from $LIBDIR";
		2559	while (my ($k, $v) = each %INC) {
		2560	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2561
		2562	warn "... unloading $k";
		2563	delete $INC{$k};
		2564
		2565	$k =~ s/\.pm$//;
		2566	$k =~ s/\//::/g;
		2567
		2568	if (my $cb = $k->can ("unload_module")) {
		2569	$cb->();
		2570	}
		2571
		2572	Symbol::delete_package $k;
		2573	}
		2574
		2575	warn "getting rid of safe::, as good as possible";
		2576	Symbol::delete_package "safe::$_"
		2577	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2578
		2579	warn "unloading cf.pm \"a bit\"";
		2580	delete $INC{"cf.pm"};
		2581
		2582	# don't, removes xs symbols, too,
		2583	# and global variables created in xs
		2584	#Symbol::delete_package __PACKAGE__;
		2585
		2586	warn "unload completed, starting to reload now";
		2587
		2588	warn "reloading cf.pm";
		2589	require cf;
		2590	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2591
		2592	warn "loading config and database again";
		2593	cf::cfg_load;
		2594
		2595	warn "loading extensions";
		2596	cf::load_extensions;
		2597
		2598	warn "reattaching attachments to objects/players";
		2599	_global_reattach; # objects, sockets
		2600	warn "reattaching attachments to maps";
		2601	reattach $_ for values %MAP;
		2602	warn "reattaching attachments to players";
		2603	reattach $_ for values %PLAYER;
		2604
		2605	warn "loading reloadable resources";
		2606	reload_resources;
		2607
		2608	warn "leaving sync_job";
		2609
		2610	1
		2611	} or do {
		2612	warn $@;
		2613	warn "error while reloading, exiting.";
		2614	exit 1;
		2615	};
		2616
		2617	warn "reloaded";
		2618	};
		2619
		2620	our $RELOAD_WATCHER; # used only during reload
		2621
		2622	register_command "reload" => sub {
		2623	my ($who, $arg) = @_;
		2624
		2625	if ($who->flag (FLAG_WIZ)) {
		2626	$who->message ("reloading server.");
		2627
		2628	# doing reload synchronously and two reloads happen back-to-back,
		2629	# coro crashes during coro_state_free->destroy here.
		2630
		2631	$RELOAD_WATCHER ||= Event->timer (
		2632	reentrant => 0,
		2633	after => 0,
		2634	data => WF_AUTOCANCEL,
		2635	cb => sub {
		2636	reload;
		2637	undef $RELOAD_WATCHER;
		2638	},
		2639	);
		2640	}
		2641	};
944		2642
945	unshift @INC, $LIBDIR;	2643	unshift @INC, $LIBDIR;
946		2644
		2645	my $bug_warning = 0;
		2646
		2647	our @WAIT_FOR_TICK;
		2648	our @WAIT_FOR_TICK_BEGIN;
		2649
		2650	sub wait_for_tick {
		2651	my $signal = new Coro::Signal;
		2652	push @WAIT_FOR_TICK, $signal;
		2653	$signal->wait;
		2654	}
		2655
		2656	sub wait_for_tick_begin {
		2657	my $signal = new Coro::Signal;
		2658	push @WAIT_FOR_TICK_BEGIN, $signal;
		2659	$signal->wait;
		2660	}
		2661
947	$TICK_WATCHER = Event->timer (	2662	$TICK_WATCHER = Event->timer (
		2663	reentrant => 0,
		2664	parked => 1,
948	prio => 1,	2665	prio => 0,
949	at => $NEXT_TICK || 1,	2666	at => $NEXT_TICK || $TICK,
		2667	data => WF_AUTOCANCEL,
950	cb => sub {	2668	cb => sub {
		2669	if ($Coro::current != $Coro::main) {
		2670	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2671	unless ++$bug_warning > 10;
		2672	return;
		2673	}
		2674
		2675	$NOW = Event::time;
		2676
951	cf::server_tick; # one server iteration	2677	cf::server_tick; # one server iteration
952		2678	$RUNTIME += $TICK;
953	my $NOW = Event::time;
954	$NEXT_TICK += $TICK;	2679	$NEXT_TICK += $TICK;
955		2680
		2681	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2682	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2683	Coro::async_pool {
		2684	write_runtime
		2685	or warn "ERROR: unable to write runtime file: $!";
		2686	};
		2687	}
		2688
		2689	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2690	$sig->send;
		2691	}
		2692	while (my $sig = shift @WAIT_FOR_TICK) {
		2693	$sig->send;
		2694	}
		2695
		2696	# my $AFTER = Event::time;
		2697	# warn $AFTER - $NOW;#d#
		2698
956	# if we are delayed by four ticks, skip them all	2699	# if we are delayed by four ticks or more, skip them all
957	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2700	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
958		2701
959	$TICK_WATCHER->at ($NEXT_TICK);	2702	$TICK_WATCHER->at ($NEXT_TICK);
960	$TICK_WATCHER->start;	2703	$TICK_WATCHER->start;
961	},	2704	},
962	);	2705	);
963		2706
964	_reload_2;	2707	{
		2708	BDB::max_poll_time $TICK * 0.1;
		2709	$BDB_POLL_WATCHER = Event->io (
		2710	reentrant => 0,
		2711	fd => BDB::poll_fileno,
		2712	poll => 'r',
		2713	prio => 0,
		2714	data => WF_AUTOCANCEL,
		2715	cb => \&BDB::poll_cb,
		2716	);
		2717	BDB::min_parallel 8;
		2718
		2719	BDB::set_sync_prepare {
		2720	my $status;
		2721	my $current = $Coro::current;
		2722	(
		2723	sub {
		2724	$status = $!;
		2725	$current->ready; undef $current;
		2726	},
		2727	sub {
		2728	Coro::schedule while defined $current;
		2729	$! = $status;
		2730	},
		2731	)
		2732	};
		2733
		2734	unless ($DB_ENV) {
		2735	$DB_ENV = BDB::db_env_create;
		2736
		2737	cf::sync_job {
		2738	eval {
		2739	BDB::db_env_open
		2740	$DB_ENV,
		2741	$BDB_ENV_DIR,
		2742	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2743	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2744	0666;
		2745
		2746	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2747
		2748	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2749	$DB_ENV->set_lk_detect;
		2750	};
		2751
		2752	cf::cleanup "db_env_open(db): $@" if $@;
		2753	};
		2754	}
		2755	}
		2756
		2757	{
		2758	IO::AIO::min_parallel 8;
		2759
		2760	undef $Coro::AIO::WATCHER;
		2761	IO::AIO::max_poll_time $TICK * 0.1;
		2762	$AIO_POLL_WATCHER = Event->io (
		2763	reentrant => 0,
		2764	data => WF_AUTOCANCEL,
		2765	fd => IO::AIO::poll_fileno,
		2766	poll => 'r',
		2767	prio => 6,
		2768	cb => \&IO::AIO::poll_cb,
		2769	);
		2770	}
		2771
		2772	END { cf::emergency_save }
965		2773
966	1	2774	1
967		2775

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