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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.66 by root, Tue Sep 12 22:43:31 2006 UTC vs.
Revision 1.220 by root, Sat Feb 17 23:54:35 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.5 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use BDB ();
		21	use Data::Dumper;
		22	use Digest::MD5;
		23	use Fcntl;
		24	use IO::AIO 2.32 ();
		25	use YAML::Syck ();
10	use Time::HiRes;	26	use Time::HiRes;
11	use Event;	27	use Compress::LZF;
		28
		29	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		30
12	$Event::Eval = 1; # no idea why this is required, but it is	31	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		32
14	use strict;	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		34
16	_init_vars;	35	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		36	$YAML::Syck::ImplicitUnicode = 1;
17		37
		38	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		39
18	our %COMMAND = ();	40	our %COMMAND = ();
		41	our %COMMAND_TIME = ();
		42
		43	our @EXTS = (); # list of extension package names
		44	our %EXTCMD = ();
		45	our %EXT_CORO = (); # coroutines bound to extensions
		46	our %EXT_MAP = (); # pluggable maps
		47
19	our @EVENT;	48	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	49	our $LIBDIR = datadir . "/ext";
21		50
22	our $TICK = MAX_TIME * 1e-6;	51	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	52	our $TICK_WATCHER;
		53	our $AIO_POLL_WATCHER;
		54	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
24	our $NEXT_TICK;	55	our $NEXT_TICK;
		56	our $NOW;
		57	our $USE_FSYNC = 1; # use fsync to write maps - default off
		58
		59	our $BDB_POLL_WATCHER;
		60	our $DB_ENV;
		61
		62	our %CFG;
		63
		64	our $UPTIME; $UPTIME ||= time;
		65	our $RUNTIME;
		66
		67	our %PLAYER; # all users
		68	our %MAP; # all maps
		69	our $LINK_MAP; # the special {link} map, which is always available
		70	our $RANDOM_MAPS = cf::localdir . "/random";
		71	our $BDB_ENV_DIR = cf::localdir . "/db";
		72
		73	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		74	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		75
		76	# used to convert map paths into valid unix filenames by replacing / by ∕
		77	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		78
		79	binmode STDOUT;
		80	binmode STDERR;
		81
		82	# read virtual server time, if available
		83	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		84	open my $fh, "<", cf::localdir . "/runtime"
		85	or die "unable to read runtime file: $!";
		86	$RUNTIME = <$fh> + 0.;
		87	}
		88
		89	mkdir cf::localdir;
		90	mkdir cf::localdir . "/" . cf::playerdir;
		91	mkdir cf::localdir . "/" . cf::tmpdir;
		92	mkdir cf::localdir . "/" . cf::uniquedir;
		93	mkdir $RANDOM_MAPS;
		94	mkdir $BDB_ENV_DIR;
		95
		96	our $EMERGENCY_POSITION;
		97
		98	sub cf::map::normalise;
		99
		100	#############################################################################
		101
		102	=head2 GLOBAL VARIABLES
		103
		104	=over 4
		105
		106	=item $cf::UPTIME
		107
		108	The timestamp of the server start (so not actually an uptime).
		109
		110	=item $cf::RUNTIME
		111
		112	The time this server has run, starts at 0 and is increased by $cf::TICK on
		113	every server tick.
		114
		115	=item $cf::LIBDIR
		116
		117	The perl library directory, where extensions and cf-specific modules can
		118	be found. It will be added to C<@INC> automatically.
		119
		120	=item $cf::NOW
		121
		122	The time of the last (current) server tick.
		123
		124	=item $cf::TICK
		125
		126	The interval between server ticks, in seconds.
		127
		128	=item %cf::CFG
		129
		130	Configuration for the server, loaded from C</etc/crossfire/config>, or
		131	from wherever your confdir points to.
		132
		133	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		134
		135	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		136	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		137	processing has been done. Call C<< ->wait >> on them to maximise the
		138	window of cpu time available, or simply to synchronise to the server tick.
		139
		140	=back
		141
		142	=cut
25		143
26	BEGIN {	144	BEGIN {
27	*CORE::GLOBAL::warn = sub {	145	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	146	my $msg = join "", @_;
		147	utf8::encode $msg;
		148
29	$msg .= "\n"	149	$msg .= "\n"
30	unless $msg =~ /\n$/;	150	unless $msg =~ /\n$/;
31		151
32	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	152	LOG llevError, $msg;
34	};	153	};
35	}	154	}
36		155
		156	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		157	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		158	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		159	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		160	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
37	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	161	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
38		162
39	# we bless all objects into (empty) derived classes to force a method lookup	163	# we bless all objects into (empty) derived classes to force a method lookup
40	# within the Safe compartment.	164	# within the Safe compartment.
41	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	165	for my $pkg (qw(
		166	cf::global cf::attachable
		167	cf::object cf::object::player
		168	cf::client cf::player
		169	cf::arch cf::living
		170	cf::map cf::party cf::region
		171	)) {
42	no strict 'refs';	172	no strict 'refs';
43	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	173	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
44	}	174	}
45		175
46	$Event::DIED = sub {	176	$Event::DIED = sub {
47	warn "error in event callback: @_";	177	warn "error in event callback: @_";
48	};	178	};
49		179
50	my %ext_pkg;	180	=head2 UTILITY FUNCTIONS
51	my @exts;
52	my @hook;
53	my %command;
54	my %extcmd;
55		181
56	#############################################################################	182	=over 4
57	# utility functions	183
		184	=item dumpval $ref
		185
		186	=cut
		187
		188	sub dumpval {
		189	eval {
		190	local $SIG{__DIE__};
		191	my $d;
		192	if (1) {
		193	$d = new Data::Dumper([$_[0]], ["*var"]);
		194	$d->Terse(1);
		195	$d->Indent(2);
		196	$d->Quotekeys(0);
		197	$d->Useqq(1);
		198	#$d->Bless(...);
		199	$d->Seen($_[1]) if @_ > 1;
		200	$d = $d->Dump();
		201	}
		202	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		203	$d
		204	} || "[unable to dump $_[0]: '$@']";
		205	}
58		206
59	use JSON::Syck (); # TODO# replace by JSON::PC once working	207	use JSON::Syck (); # TODO# replace by JSON::PC once working
		208
		209	=item $ref = cf::from_json $json
		210
		211	Converts a JSON string into the corresponding perl data structure.
		212
		213	=cut
60		214
61	sub from_json($) {	215	sub from_json($) {
62	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	216	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
63	JSON::Syck::Load $_[0]	217	JSON::Syck::Load $_[0]
64	}	218	}
65		219
		220	=item $json = cf::to_json $ref
		221
		222	Converts a perl data structure into its JSON representation.
		223
		224	=cut
		225
66	sub to_json($) {	226	sub to_json($) {
67	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	227	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
68	JSON::Syck::Dump $_[0]	228	JSON::Syck::Dump $_[0]
69	}	229	}
70		230
		231	=item cf::lock_wait $string
		232
		233	Wait until the given lock is available. See cf::lock_acquire.
		234
		235	=item my $lock = cf::lock_acquire $string
		236
		237	Wait until the given lock is available and then acquires it and returns
		238	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		239	for example when the coroutine gets canceled), the lock is automatically
		240	returned.
		241
		242	Lock names should begin with a unique identifier (for example, cf::map::find
		243	uses map_find and cf::map::load uses map_load).
		244
		245	=cut
		246
		247	our %LOCK;
		248
		249	sub lock_wait($) {
		250	my ($key) = @_;
		251
		252	# wait for lock, if any
		253	while ($LOCK{$key}) {
		254	push @{ $LOCK{$key} }, $Coro::current;
		255	Coro::schedule;
		256	}
		257	}
		258
		259	sub lock_acquire($) {
		260	my ($key) = @_;
		261
		262	# wait, to be sure we are not locked
		263	lock_wait $key;
		264
		265	$LOCK{$key} = [];
		266
		267	Coro::guard {
		268	# wake up all waiters, to be on the safe side
		269	$_->ready for @{ delete $LOCK{$key} };
		270	}
		271	}
		272
		273	sub freeze_mainloop {
		274	return unless $TICK_WATCHER->is_active;
		275
		276	my $guard = Coro::guard {
		277	$TICK_WATCHER->start;
		278	};
		279	$TICK_WATCHER->stop;
		280	$guard
		281	}
		282
		283	=item cf::async { BLOCK }
		284
		285	Currently the same as Coro::async_pool, meaning you cannot use
		286	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		287	thing you are allowed to do is call C<prio> on it.
		288
		289	=cut
		290
		291	BEGIN { *async = \&Coro::async_pool }
		292
		293	=item cf::sync_job { BLOCK }
		294
		295	The design of crossfire+ requires that the main coro ($Coro::main) is
		296	always able to handle events or runnable, as crossfire+ is only partly
		297	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		298
		299	If it must be done, put the blocking parts into C<sync_job>. This will run
		300	the given BLOCK in another coroutine while waiting for the result. The
		301	server will be frozen during this time, so the block should either finish
		302	fast or be very important.
		303
		304	=cut
		305
		306	sub sync_job(&) {
		307	my ($job) = @_;
		308
		309	if ($Coro::current == $Coro::main) {
		310	# this is the main coro, too bad, we have to block
		311	# till the operation succeeds, freezing the server :/
		312
		313	# TODO: use suspend/resume instead
		314	# (but this is cancel-safe)
		315	my $freeze_guard = freeze_mainloop;
		316
		317	my $busy = 1;
		318	my @res;
		319
		320	(async {
		321	@res = eval { $job->() };
		322	warn $@ if $@;
		323	undef $busy;
		324	})->prio (Coro::PRIO_MAX);
		325
		326	while ($busy) {
		327	Coro::cede or Event::one_event;
		328	}
		329
		330	wantarray ? @res : $res[0]
		331	} else {
		332	# we are in another coroutine, how wonderful, everything just works
		333
		334	$job->()
		335	}
		336	}
		337
		338	=item $coro = cf::async_ext { BLOCK }
		339
		340	Like async, but this coro is automatically being canceled when the
		341	extension calling this is being unloaded.
		342
		343	=cut
		344
		345	sub async_ext(&) {
		346	my $cb = shift;
		347
		348	my $coro = &Coro::async ($cb);
		349
		350	$coro->on_destroy (sub {
		351	delete $EXT_CORO{$coro+0};
		352	});
		353	$EXT_CORO{$coro+0} = $coro;
		354
		355	$coro
		356	}
		357
		358	sub write_runtime {
		359	my $guard = cf::lock_acquire "write_runtime";
		360
		361	my $runtime = cf::localdir . "/runtime";
		362
		363	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		364	or return;
		365
		366	my $value = $cf::RUNTIME + 90 + 10;
		367	# 10 is the runtime save interval, for a monotonic clock
		368	# 60 allows for the watchdog to kill the server.
		369
		370	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		371	and return;
		372
		373	# always fsync - this file is important
		374	aio_fsync $fh
		375	and return;
		376
		377	close $fh
		378	or return;
		379
		380	aio_rename "$runtime~", $runtime
		381	and return;
		382
		383	1
		384	}
		385
		386	=back
		387
		388	=cut
		389
71	#############################################################################	390	#############################################################################
72	# "new" plug-in system
73		391
74	=head3 EVENTS AND OBJECT ATTACHMENTS	392	=head2 ATTACHABLE OBJECTS
		393
		394	Many objects in crossfire are so-called attachable objects. That means you can
		395	attach callbacks/event handlers (a collection of which is called an "attachment")
		396	to it. All such attachable objects support the following methods.
		397
		398	In the following description, CLASS can be any of C<global>, C<object>
		399	C<player>, C<client> or C<map> (i.e. the attachable objects in
		400	crossfire+).
75		401
76	=over 4	402	=over 4
77		403
78	=item $object->attach ($attachment, key => $value...)
79
80	=item $object->detach ($attachment)
81
82	Attach/detach a pre-registered attachment to an object.
83
84	=item $player->attach ($attachment, key => $value...)
85
86	=item $player->detach ($attachment)
87
88	Attach/detach a pre-registered attachment to a player.
89
90	=item $map->attach ($attachment, key => $value...)	404	=item $attachable->attach ($attachment, key => $value...)
91		405
92	=item $map->detach ($attachment)	406	=item $attachable->detach ($attachment)
93		407
94	Attach/detach a pre-registered attachment to a map.	408	Attach/detach a pre-registered attachment to a specific object and give it
		409	the specified key/value pairs as arguments.
95		410
96	=item $bool = $object->attached ($name)	411	Example, attach a minesweeper attachment to the given object, making it a
		412	10x10 minesweeper game:
97		413
98	=item $bool = $player->attached ($name)	414	$obj->attach (minesweeper => width => 10, height => 10);
99		415
100	=item $bool = $map->attached ($name)	416	=item $bool = $attachable->attached ($name)
101		417
102	Checks wether the named attachment is currently attached to the object.	418	Checks wether the named attachment is currently attached to the object.
103		419
104	=item cf::attach_global ...	420	=item cf::CLASS->attach ...
105		421
106	Attach handlers for global events.	422	=item cf::CLASS->detach ...
107		423
108	This and all following C<attach_*>-functions expect any number of the	424	Define an anonymous attachment and attach it to all objects of the given
109	following handler/hook descriptions:	425	CLASS. See the next function for an explanation of its arguments.
		426
		427	You can attach to global events by using the C<cf::global> class.
		428
		429	Example, log all player logins:
		430
		431	cf::player->attach (
		432	on_login => sub {
		433	my ($pl) = @_;
		434	...
		435	},
		436	);
		437
		438	Example, attach to the jeweler skill:
		439
		440	cf::object->attach (
		441	type => cf::SKILL,
		442	subtype => cf::SK_JEWELER,
		443	on_use_skill => sub {
		444	my ($sk, $ob, $part, $dir, $msg) = @_;
		445	...
		446	},
		447	);
		448
		449	=item cf::CLASS::attachment $name, ...
		450
		451	Register an attachment by C<$name> through which attachable objects of the
		452	given CLASS can refer to this attachment.
		453
		454	Some classes such as crossfire maps and objects can specify attachments
		455	that are attached at load/instantiate time, thus the need for a name.
		456
		457	These calls expect any number of the following handler/hook descriptions:
110		458
111	=over 4	459	=over 4
112		460
113	=item prio => $number	461	=item prio => $number
114		462
…		…
116	by another C<prio> setting). Lower priority handlers get executed	464	by another C<prio> setting). Lower priority handlers get executed
117	earlier. The default priority is C<0>, and many built-in handlers are	465	earlier. The default priority is C<0>, and many built-in handlers are
118	registered at priority C<-1000>, so lower priorities should not be used	466	registered at priority C<-1000>, so lower priorities should not be used
119	unless you know what you are doing.	467	unless you know what you are doing.
120		468
		469	=item type => $type
		470
		471	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		472	given type of objects only (the additional parameter C<subtype> can be
		473	used to further limit to the given subtype).
		474
121	=item on_I<event> => \&cb	475	=item on_I<event> => \&cb
122		476
123	Call the given code reference whenever the named event happens (event is	477	Call the given code reference whenever the named event happens (event is
124	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	478	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
125	handlers are recognised generally depends on the type of object these	479	handlers are recognised generally depends on the type of object these
…		…
134	package and register them. Only handlers for eevents supported by the	488	package and register them. Only handlers for eevents supported by the
135	object/class are recognised.	489	object/class are recognised.
136		490
137	=back	491	=back
138		492
139	=item cf::attach_to_type $object_type, $subtype, ...	493	Example, define an attachment called "sockpuppet" that calls the given
		494	event handler when a monster attacks:
140		495
141	Attach handlers for a specific object type (e.g. TRANSPORT) and	496	cf::object::attachment sockpuppet =>
142	subtype. If C<$subtype> is zero or undef, matches all objects of the given	497	on_skill_attack => sub {
143	type.	498	my ($self, $victim) = @_;
144		499	...
145	=item cf::attach_to_objects ...
146
147	Attach handlers to all objects. Do not use this except for debugging or
148	very rare events, as handlers are (obviously) called for I<all> objects in
149	the game.
150
151	=item cf::attach_to_players ...
152
153	Attach handlers to all players.
154
155	=item cf::attach_to_maps ...
156
157	Attach handlers to all maps.
158
159	=item cf:register_attachment $name, ...
160
161	Register an attachment by name through which objects can refer to this
162	attachment.
163
164	=item cf:register_player_attachment $name, ...
165
166	Register an attachment by name through which players can refer to this
167	attachment.
168
169	=item cf:register_map_attachment $name, ...
170
171	Register an attachment by name through which maps can refer to this
172	attachment.
173
174	=cut
175
176	# the following variables are defined in .xs and must not be re-created
177	our @CB_GLOBAL = (); # registry for all global events
178	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
179	our @CB_PLAYER = ();
180	our @CB_TYPE = (); # registry for type (cf-object class) based events
181	our @CB_MAP = ();
182
183	my %attachment;
184
185	sub _attach_cb($\%$$$) {
186	my ($registry, $undo, $event, $prio, $cb) = @_;
187
188	use sort 'stable';
189
190	$cb = [$prio, $cb];
191
192	@{$registry->[$event]} = sort
193	{ $a->[0] cmp $b->[0] }
194	@{$registry->[$event] || []}, $cb;
195
196	push @{$undo->{cb}}, [$event, $cb];
197	}
198
199	# attach handles attaching event callbacks
200	# the only thing the caller has to do is pass the correct
201	# registry (== where the callback attaches to).
202	sub _attach(\@$@) {
203	my ($registry, $klass, @arg) = @_;
204
205	my $prio = 0;
206
207	my %undo = (
208	registry => $registry,
209	cb => [],
210	);
211
212	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
213
214	while (@arg) {
215	my $type = shift @arg;
216
217	if ($type eq "prio") {
218	$prio = shift @arg;
219
220	} elsif ($type eq "package") {
221	my $pkg = shift @arg;
222
223	while (my ($name, $id) = each %cb_id) {
224	if (my $cb = $pkg->can ($name)) {
225	_attach_cb $registry, %undo, $id, $prio, $cb;
226	}
227	}	500	}
228
229	} elsif (exists $cb_id{$type}) {
230	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
231
232	} elsif (ref $type) {
233	warn "attaching objects not supported, ignoring.\n";
234
235	} else {
236	shift @arg;
237	warn "attach argument '$type' not supported, ignoring.\n";
238	}
239	}
240
241	\%undo
242	}
243
244	sub _attach_attachment {
245	my ($obj, $name, %arg) = @_;
246
247	return if exists $obj->{_attachment}{$name};
248
249	my $res;
250
251	if (my $attach = $attachment{$name}) {
252	my $registry = $obj->registry;
253
254	for (@$attach) {
255	my ($klass, @attach) = @$_;
256	$res = _attach @$registry, $klass, @attach;
257	}
258
259	$obj->{$name} = \%arg;
260	} else {
261	warn "object uses attachment '$name' that is not available, postponing.\n";
262	}
263
264	$obj->{_attachment}{$name} = undef;
265
266	$res->{attachment} = $name;
267	$res
268	}
269
270	*cf::object::attach =
271	*cf::player::attach =
272	*cf::map::attach = sub {
273	my ($obj, $name, %arg) = @_;
274
275	_attach_attachment $obj, $name, %arg;
276	};
277
278	# all those should be optimised
279	*cf::object::detach =
280	*cf::player::detach =
281	*cf::map::detach = sub {
282	my ($obj, $name) = @_;
283
284	delete $obj->{_attachment}{$name};
285	reattach ($obj);
286	};
287
288	*cf::object::attached =
289	*cf::player::attached =
290	*cf::map::attached = sub {
291	my ($obj, $name) = @_;
292
293	exists $obj->{_attachment}{$name}
294	};
295
296	sub attach_global {
297	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
298	}
299
300	sub attach_to_type {
301	my $type = shift;
302	my $subtype = shift;
303
304	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
305	}
306
307	sub attach_to_objects {
308	_attach @CB_OBJECT, KLASS_OBJECT, @_
309	}
310
311	sub attach_to_players {
312	_attach @CB_PLAYER, KLASS_PLAYER, @_
313	}
314
315	sub attach_to_maps {
316	_attach @CB_MAP, KLASS_MAP, @_
317	}
318
319	sub register_attachment {
320	my $name = shift;
321
322	$attachment{$name} = [[KLASS_OBJECT, @_]];
323	}
324
325	sub register_player_attachment {
326	my $name = shift;
327
328	$attachment{$name} = [[KLASS_PLAYER, @_]];
329	}
330
331	sub register_map_attachment {
332	my $name = shift;
333
334	$attachment{$name} = [[KLASS_MAP, @_]];
335	}
336
337	our $override;
338	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
339
340	sub override {
341	$override = 1;
342	@invoke_results = ();
343	}
344
345	sub do_invoke {
346	my $event = shift;
347	my $callbacks = shift;
348
349	@invoke_results = ();
350
351	local $override;
352
353	for (@$callbacks) {
354	eval { &{$_->[1]} };
355
356	if ($@) {
357	warn "$@";
358	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
359	override;
360	}
361
362	return 1 if $override;
363	}
364
365	0	501	}
366	}
367		502
368	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	503	=item $attachable->valid
369
370	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
371
372	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
373
374	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
375
376	Generate a global/object/player/map-specific event with the given arguments.
377
378	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
379	removed in future versions), and there is no public API to access override
380	results (if you must, access C<@cf::invoke_results> directly).
381
382	=back
383
384	=head2 methods valid for all pointers
385
386	=over 4
387
388	=item $object->valid
389
390	=item $player->valid
391
392	=item $map->valid
393		504
394	Just because you have a perl object does not mean that the corresponding	505	Just because you have a perl object does not mean that the corresponding
395	C-level object still exists. If you try to access an object that has no	506	C-level object still exists. If you try to access an object that has no
396	valid C counterpart anymore you get an exception at runtime. This method	507	valid C counterpart anymore you get an exception at runtime. This method
397	can be used to test for existence of the C object part without causing an	508	can be used to test for existence of the C object part without causing an
398	exception.	509	exception.
399		510
		511	=cut
		512
		513	# the following variables are defined in .xs and must not be re-created
		514	our @CB_GLOBAL = (); # registry for all global events
		515	our @CB_ATTACHABLE = (); # registry for all attachables
		516	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		517	our @CB_PLAYER = ();
		518	our @CB_CLIENT = ();
		519	our @CB_TYPE = (); # registry for type (cf-object class) based events
		520	our @CB_MAP = ();
		521
		522	my %attachment;
		523
		524	sub cf::attachable::thawer_merge {
		525	# simply override everything except _meta
		526	local $_[0]{_meta};
		527	%{$_[0]} = %{$_[1]};
		528	}
		529
		530	sub _attach_cb($$$$) {
		531	my ($registry, $event, $prio, $cb) = @_;
		532
		533	use sort 'stable';
		534
		535	$cb = [$prio, $cb];
		536
		537	@{$registry->[$event]} = sort
		538	{ $a->[0] cmp $b->[0] }
		539	@{$registry->[$event] || []}, $cb;
		540	}
		541
		542	# hack
		543	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		544
		545	# attach handles attaching event callbacks
		546	# the only thing the caller has to do is pass the correct
		547	# registry (== where the callback attaches to).
		548	sub _attach {
		549	my ($registry, $klass, @arg) = @_;
		550
		551	my $object_type;
		552	my $prio = 0;
		553	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		554
		555	#TODO: get rid of this hack
		556	if ($attachable_klass{$klass}) {
		557	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		558	}
		559
		560	while (@arg) {
		561	my $type = shift @arg;
		562
		563	if ($type eq "prio") {
		564	$prio = shift @arg;
		565
		566	} elsif ($type eq "type") {
		567	$object_type = shift @arg;
		568	$registry = $CB_TYPE[$object_type] ||= [];
		569
		570	} elsif ($type eq "subtype") {
		571	defined $object_type or Carp::croak "subtype specified without type";
		572	my $object_subtype = shift @arg;
		573	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		574
		575	} elsif ($type eq "package") {
		576	my $pkg = shift @arg;
		577
		578	while (my ($name, $id) = each %cb_id) {
		579	if (my $cb = $pkg->can ($name)) {
		580	_attach_cb $registry, $id, $prio, $cb;
		581	}
		582	}
		583
		584	} elsif (exists $cb_id{$type}) {
		585	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		586
		587	} elsif (ref $type) {
		588	warn "attaching objects not supported, ignoring.\n";
		589
		590	} else {
		591	shift @arg;
		592	warn "attach argument '$type' not supported, ignoring.\n";
		593	}
		594	}
		595	}
		596
		597	sub _object_attach {
		598	my ($obj, $name, %arg) = @_;
		599
		600	return if exists $obj->{_attachment}{$name};
		601
		602	if (my $attach = $attachment{$name}) {
		603	my $registry = $obj->registry;
		604
		605	for (@$attach) {
		606	my ($klass, @attach) = @$_;
		607	_attach $registry, $klass, @attach;
		608	}
		609
		610	$obj->{$name} = \%arg;
		611	} else {
		612	warn "object uses attachment '$name' that is not available, postponing.\n";
		613	}
		614
		615	$obj->{_attachment}{$name} = undef;
		616	}
		617
		618	sub cf::attachable::attach {
		619	if (ref $_[0]) {
		620	_object_attach @_;
		621	} else {
		622	_attach shift->_attach_registry, @_;
		623	}
		624	};
		625
		626	# all those should be optimised
		627	sub cf::attachable::detach {
		628	my ($obj, $name) = @_;
		629
		630	if (ref $obj) {
		631	delete $obj->{_attachment}{$name};
		632	reattach ($obj);
		633	} else {
		634	Carp::croak "cannot, currently, detach class attachments";
		635	}
		636	};
		637
		638	sub cf::attachable::attached {
		639	my ($obj, $name) = @_;
		640
		641	exists $obj->{_attachment}{$name}
		642	}
		643
		644	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		645	eval "#line " . __LINE__ . " 'cf.pm'
		646	sub cf::\L$klass\E::_attach_registry {
		647	(\\\@CB_$klass, KLASS_$klass)
		648	}
		649
		650	sub cf::\L$klass\E::attachment {
		651	my \$name = shift;
		652
		653	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		654	}
		655	";
		656	die if $@;
		657	}
		658
		659	our $override;
		660	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		661
		662	sub override {
		663	$override = 1;
		664	@invoke_results = ();
		665	}
		666
		667	sub do_invoke {
		668	my $event = shift;
		669	my $callbacks = shift;
		670
		671	@invoke_results = ();
		672
		673	local $override;
		674
		675	for (@$callbacks) {
		676	eval { &{$_->[1]} };
		677
		678	if ($@) {
		679	warn "$@";
		680	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		681	override;
		682	}
		683
		684	return 1 if $override;
		685	}
		686
		687	0
		688	}
		689
		690	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		691
		692	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		693
		694	Generate an object-specific event with the given arguments.
		695
		696	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		697	removed in future versions), and there is no public API to access override
		698	results (if you must, access C<@cf::invoke_results> directly).
		699
400	=back	700	=back
401		701
402	=cut	702	=cut
403
404	*cf::object::valid =
405	*cf::player::valid =
406	*cf::map::valid = \&cf::_valid;
407		703
408	#############################################################################	704	#############################################################################
409	# object support	705	# object support
410		706
411	sub instantiate {
412	my ($obj, $data) = @_;
413
414	$data = from_json $data;
415
416	for (@$data) {
417	my ($name, $args) = @$_;
418
419	$obj->attach ($name, %{$args || {} });
420	}
421	}
422
423	# basically do the same as instantiate, without calling instantiate
424	sub reattach {	707	sub reattach {
		708	# basically do the same as instantiate, without calling instantiate
425	my ($obj) = @_;	709	my ($obj) = @_;
		710
		711	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		712
426	my $registry = $obj->registry;	713	my $registry = $obj->registry;
427		714
428	@$registry = ();	715	@$registry = ();
429		716
430	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	717	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
431		718
432	for my $name (keys %{ $obj->{_attachment} || {} }) {	719	for my $name (keys %{ $obj->{_attachment} || {} }) {
433	if (my $attach = $attachment{$name}) {	720	if (my $attach = $attachment{$name}) {
434	for (@$attach) {	721	for (@$attach) {
435	my ($klass, @attach) = @$_;	722	my ($klass, @attach) = @$_;
436	_attach @$registry, $klass, @attach;	723	_attach $registry, $klass, @attach;
437	}	724	}
438	} else {	725	} else {
439	warn "object uses attachment '$name' that is not available, postponing.\n";	726	warn "object uses attachment '$name' that is not available, postponing.\n";
440	}	727	}
441	}	728	}
442	}	729	}
443		730
444	sub object_freezer_save {	731	cf::attachable->attach (
445	my ($filename, $rdata, $objs) = @_;
446
447	if (length $$rdata) {
448	warn sprintf "saving %s (%d,%d)\n",
449	$filename, length $$rdata, scalar @$objs;
450
451	if (open my $fh, ">:raw", "$filename~") {
452	chmod SAVE_MODE, $fh;
453	syswrite $fh, $$rdata;
454	close $fh;
455
456	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
457	chmod SAVE_MODE, $fh;
458	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
459	close $fh;
460	rename "$filename.pst~", "$filename.pst";
461	} else {
462	unlink "$filename.pst";
463	}
464
465	rename "$filename~", $filename;
466	} else {
467	warn "FATAL: $filename~: $!\n";
468	}
469	} else {
470	unlink $filename;
471	unlink "$filename.pst";
472	}
473	}
474
475	sub object_thawer_load {
476	my ($filename) = @_;
477
478	local $/;
479
480	my $av;
481
482	#TODO: use sysread etc.
483	if (open my $data, "<:raw:perlio", $filename) {
484	$data = <$data>;
485	if (open my $pst, "<:raw:perlio", "$filename.pst") {
486	$av = eval { (Storable::thaw <$pst>)->{objs} };
487	}
488	return ($data, $av);
489	}
490
491	()
492	}
493
494	attach_to_objects
495	prio => -1000000,	732	prio => -1000000,
		733	on_instantiate => sub {
		734	my ($obj, $data) = @_;
		735
		736	$data = from_json $data;
		737
		738	for (@$data) {
		739	my ($name, $args) = @$_;
		740
		741	$obj->attach ($name, %{$args || {} });
		742	}
		743	},
		744	on_reattach => \&reattach,
496	on_clone => sub {	745	on_clone => sub {
497	my ($src, $dst) = @_;	746	my ($src, $dst) = @_;
498		747
499	@{$dst->registry} = @{$src->registry};	748	@{$dst->registry} = @{$src->registry};
500		749
501	%$dst = %$src;	750	%$dst = %$src;
502		751
503	%{$dst->{_attachment}} = %{$src->{_attachment}}	752	%{$dst->{_attachment}} = %{$src->{_attachment}}
504	if exists $src->{_attachment};	753	if exists $src->{_attachment};
505	},	754	},
506	;	755	);
		756
		757	sub object_freezer_save {
		758	my ($filename, $rdata, $objs) = @_;
		759
		760	sync_job {
		761	if (length $$rdata) {
		762	warn sprintf "saving %s (%d,%d)\n",
		763	$filename, length $$rdata, scalar @$objs;
		764
		765	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		766	chmod SAVE_MODE, $fh;
		767	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		768	aio_fsync $fh if $cf::USE_FSYNC;
		769	close $fh;
		770
		771	if (@$objs) {
		772	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		773	chmod SAVE_MODE, $fh;
		774	my $data = Storable::nfreeze { version => 1, objs => $objs };
		775	aio_write $fh, 0, (length $data), $data, 0;
		776	aio_fsync $fh if $cf::USE_FSYNC;
		777	close $fh;
		778	aio_rename "$filename.pst~", "$filename.pst";
		779	}
		780	} else {
		781	aio_unlink "$filename.pst";
		782	}
		783
		784	aio_rename "$filename~", $filename;
		785	} else {
		786	warn "FATAL: $filename~: $!\n";
		787	}
		788	} else {
		789	aio_unlink $filename;
		790	aio_unlink "$filename.pst";
		791	}
		792	}
		793	}
		794
		795	sub object_freezer_as_string {
		796	my ($rdata, $objs) = @_;
		797
		798	use Data::Dumper;
		799
		800	$$rdata . Dumper $objs
		801	}
		802
		803	sub object_thawer_load {
		804	my ($filename) = @_;
		805
		806	my ($data, $av);
		807
		808	(aio_load $filename, $data) >= 0
		809	or return;
		810
		811	unless (aio_stat "$filename.pst") {
		812	(aio_load "$filename.pst", $av) >= 0
		813	or return;
		814	$av = eval { (Storable::thaw $av)->{objs} };
		815	}
		816
		817	warn sprintf "loading %s (%d)\n",
		818	$filename, length $data, scalar @{$av || []};#d#
		819	return ($data, $av);
		820	}
507		821
508	#############################################################################	822	#############################################################################
509	# old plug-in events	823	# command handling &c
510		824
511	sub inject_event {	825	=item cf::register_command $name => \&callback($ob,$args);
512	my $extension = shift;
513	my $event_code = shift;
514		826
515	my $cb = $hook[$event_code]{$extension}	827	Register a callback for execution when the client sends the user command
516	or return;	828	$name.
517		829
518	&$cb	830	=cut
519	}
520
521	sub inject_global_event {
522	my $event = shift;
523
524	my $cb = $hook[$event]
525	or return;
526
527	List::Util::max map &$_, values %$cb
528	}
529
530	sub inject_command {
531	my ($name, $obj, $params) = @_;
532
533	for my $cmd (@{ $command{$name} }) {
534	$cmd->[1]->($obj, $params);
535	}
536
537	-1
538	}
539		831
540	sub register_command {	832	sub register_command {
541	my ($name, $time, $cb) = @_;	833	my ($name, $cb) = @_;
542		834
543	my $caller = caller;	835	my $caller = caller;
544	#warn "registering command '$name/$time' to '$caller'";	836	#warn "registering command '$name/$time' to '$caller'";
545		837
546	push @{ $command{$name} }, [$time, $cb, $caller];	838	push @{ $COMMAND{$name} }, [$caller, $cb];
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
548	}	839	}
		840
		841	=item cf::register_extcmd $name => \&callback($pl,$packet);
		842
		843	Register a callbackf ro execution when the client sends an extcmd packet.
		844
		845	If the callback returns something, it is sent back as if reply was being
		846	called.
		847
		848	=cut
549		849
550	sub register_extcmd {	850	sub register_extcmd {
551	my ($name, $cb) = @_;	851	my ($name, $cb) = @_;
552		852
553	my $caller = caller;	853	$EXTCMD{$name} = $cb;
554	#warn "registering extcmd '$name' to '$caller'";
555
556	$extcmd{$name} = [$cb, $caller];
557	}	854	}
558		855
559	sub register {	856	cf::player->attach (
560	my ($base, $pkg) = @_;	857	on_command => sub {
		858	my ($pl, $name, $params) = @_;
561		859
562	#TODO	860	my $cb = $COMMAND{$name}
563	}	861	or return;
		862
		863	for my $cmd (@$cb) {
		864	$cmd->[1]->($pl->ob, $params);
		865	}
		866
		867	cf::override;
		868	},
		869	on_extcmd => sub {
		870	my ($pl, $buf) = @_;
		871
		872	my $msg = eval { from_json $buf };
		873
		874	if (ref $msg) {
		875	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		876	if (my %reply = $cb->($pl, $msg)) {
		877	$pl->ext_reply ($msg->{msgid}, %reply);
		878	}
		879	}
		880	} else {
		881	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		882	}
		883
		884	cf::override;
		885	},
		886	);
564		887
565	sub load_extension {	888	sub load_extension {
566	my ($path) = @_;	889	my ($path) = @_;
567		890
568	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	891	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
569	my $base = $1;	892	my $base = $1;
570	my $pkg = $1;	893	my $pkg = $1;
571	$pkg =~ s/[^[:word:]]/_/g;	894	$pkg =~ s/[^[:word:]]/_/g;
572	$pkg = "ext::$pkg";	895	$pkg = "ext::$pkg";
573		896
574	warn "loading '$path' into '$pkg'\n";	897	warn "... loading '$path' into '$pkg'\n";
575		898
576	open my $fh, "<:utf8", $path	899	open my $fh, "<:utf8", $path
577	or die "$path: $!";	900	or die "$path: $!";
578		901
579	my $source =	902	my $source =
580	"package $pkg; use strict; use utf8;\n"	903	"package $pkg; use strict; use utf8;\n"
581	. "#line 1 \"$path\"\n{\n"	904	. "#line 1 \"$path\"\n{\n"
582	. (do { local $/; <$fh> })	905	. (do { local $/; <$fh> })
583	. "\n};\n1";	906	. "\n};\n1";
584		907
585	eval $source	908	unless (eval $source) {
586	or die "$path: $@";	909	my $msg = $@ ? "$path: $@\n"
587		910	: "extension disabled.\n";
588	push @exts, $pkg;	911	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
589	$ext_pkg{$base} = $pkg;	912	warn $@;
590		913	warn "mandatory extension failed to load, exiting.\n";
591	# no strict 'refs';	914	exit 1;
592	# @{"$pkg\::ISA"} = ext::;	915	}
593		916	die $@;
594	register $base, $pkg;
595	}
596
597	sub unload_extension {
598	my ($pkg) = @_;
599
600	warn "removing extension $pkg\n";
601
602	# remove hooks
603	#TODO
604	# for my $idx (0 .. $#PLUGIN_EVENT) {
605	# delete $hook[$idx]{$pkg};
606	# }	917	}
607		918
608	# remove commands	919	push @EXTS, $pkg;
609	for my $name (keys %command) {
610	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
611
612	if (@cb) {
613	$command{$name} = \@cb;
614	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
615	} else {
616	delete $command{$name};
617	delete $COMMAND{"$name\000"};
618	}
619	}
620
621	# remove extcmds
622	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
623	delete $extcmd{$name};
624	}
625
626	if (my $cb = $pkg->can ("unload")) {
627	eval {
628	$cb->($pkg);
629	1
630	} or warn "$pkg unloaded, but with errors: $@";
631	}
632
633	Symbol::delete_package $pkg;
634	}	920	}
635		921
636	sub load_extensions {	922	sub load_extensions {
637	my $LIBDIR = maps_directory "perl";
638
639	for my $ext (<$LIBDIR/*.ext>) {	923	for my $ext (<$LIBDIR/*.ext>) {
640	next unless -r $ext;	924	next unless -r $ext;
641	eval {	925	eval {
642	load_extension $ext;	926	load_extension $ext;
643	1	927	1
644	} or warn "$ext not loaded: $@";	928	} or warn "$ext not loaded: $@";
645	}	929	}
646	}	930	}
647		931
648	#############################################################################	932	#############################################################################
649	# extcmd framework, basically convert ext <msg>
650	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
651		933
652	attach_to_players	934	=head2 CORE EXTENSIONS
653	on_extcmd => sub {	935
		936	Functions and methods that extend core crossfire objects.
		937
		938	=cut
		939
		940	package cf::player;
		941
		942	use Coro::AIO;
		943
		944	=head3 cf::player
		945
		946	=over 4
		947
		948	=item cf::player::find $login
		949
		950	Returns the given player object, loading it if necessary (might block).
		951
		952	=cut
		953
		954	sub playerdir($) {
		955	cf::localdir
		956	. "/"
		957	. cf::playerdir
		958	. "/"
		959	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		960	}
		961
		962	sub path($) {
		963	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		964
		965	(playerdir $login) . "/$login.pl"
		966	}
		967
		968	sub find_active($) {
		969	$cf::PLAYER{$_[0]}
		970	and $cf::PLAYER{$_[0]}->active
		971	and $cf::PLAYER{$_[0]}
		972	}
		973
		974	sub exists($) {
		975	my ($login) = @_;
		976
		977	$cf::PLAYER{$login}
		978	or cf::sync_job { !aio_stat path $login }
		979	}
		980
		981	sub find($) {
		982	return $cf::PLAYER{$_[0]} || do {
		983	my $login = $_[0];
		984
		985	my $guard = cf::lock_acquire "user_find:$login";
		986
		987	$cf::PLAYER{$_[0]} || do {
		988	my $pl = load_pl path $login
		989	or return;
		990	$cf::PLAYER{$login} = $pl
		991	}
		992	}
		993	}
		994
		995	sub save($) {
		996	my ($pl) = @_;
		997
		998	return if $pl->{deny_save};
		999
		1000	my $path = path $pl;
		1001	my $guard = cf::lock_acquire "user_save:$path";
		1002
		1003	return if $pl->{deny_save};
		1004
		1005	aio_mkdir playerdir $pl, 0770;
		1006	$pl->{last_save} = $cf::RUNTIME;
		1007
		1008	$pl->save_pl ($path);
		1009	Coro::cede;
		1010	}
		1011
		1012	sub new($) {
		1013	my ($login) = @_;
		1014
		1015	my $self = create;
		1016
		1017	$self->ob->name ($login);
		1018	$self->{deny_save} = 1;
		1019
		1020	$cf::PLAYER{$login} = $self;
		1021
		1022	$self
		1023	}
		1024
		1025	=item $pl->quit_character
		1026
		1027	Nukes the player without looking back. If logged in, the connection will
		1028	be destroyed. May block for a long time.
		1029
		1030	=cut
		1031
		1032	sub quit_character {
		1033	my ($pl) = @_;
		1034
		1035	my $name = $pl->ob->name;
		1036
		1037	$pl->{deny_save} = 1;
		1038	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1039
		1040	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1041	$pl->deactivate;
		1042	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1043	$pl->ns->destroy if $pl->ns;
		1044
		1045	my $path = playerdir $pl;
		1046	my $temp = "$path~$cf::RUNTIME~deleting~";
		1047	aio_rename $path, $temp;
		1048	delete $cf::PLAYER{$pl->ob->name};
		1049	$pl->destroy;
		1050
		1051	my $prefix = qr<^~\Q$name\E/>;
		1052
		1053	# nuke player maps
		1054	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1055
		1056	IO::AIO::aio_rmtree $temp;
		1057	}
		1058
		1059	=item cf::player::list_logins
		1060
		1061	Returns am arrayref of all valid playernames in the system, can take a
		1062	while and may block, so not sync_job-capable, ever.
		1063
		1064	=cut
		1065
		1066	sub list_logins {
		1067	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1068	or return [];
		1069
		1070	my @logins;
		1071
		1072	for my $login (@$dirs) {
		1073	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1074	aio_read $fh, 0, 512, my $buf, 0 or next;
		1075	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1076
		1077	utf8::decode $login;
		1078	push @logins, $login;
		1079	}
		1080
		1081	\@logins
		1082	}
		1083
		1084	=item $player->maps
		1085
		1086	Returns an arrayref of map paths that are private for this
		1087	player. May block.
		1088
		1089	=cut
		1090
		1091	sub maps($) {
		1092	my ($pl) = @_;
		1093
		1094	$pl = ref $pl ? $pl->ob->name : $pl;
		1095
		1096	my $files = aio_readdir playerdir $pl
		1097	or return;
		1098
		1099	my @paths;
		1100
		1101	for (@$files) {
		1102	utf8::decode $_;
		1103	next if /\.(?:pl|pst)$/;
		1104	next unless /^$PATH_SEP/o;
		1105
		1106	push @paths, cf::map::normalise "~$pl/$_";
		1107	}
		1108
		1109	\@paths
		1110	}
		1111
		1112	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1113
		1114	Sends an ext reply to the player.
		1115
		1116	=cut
		1117
		1118	sub ext_reply($$$%) {
		1119	my ($self, $id, %msg) = @_;
		1120
		1121	$msg{msgid} = $id;
		1122
		1123	$self->send ("ext " . cf::to_json \%msg);
		1124	}
		1125
		1126	package cf;
		1127
		1128	=back
		1129
		1130
		1131	=head3 cf::map
		1132
		1133	=over 4
		1134
		1135	=cut
		1136
		1137	package cf::map;
		1138
		1139	use Fcntl;
		1140	use Coro::AIO;
		1141
		1142	use overload
		1143	'""' => \&as_string,
		1144	fallback => 1;
		1145
		1146	our $MAX_RESET = 3600;
		1147	our $DEFAULT_RESET = 3000;
		1148
		1149	sub generate_random_map {
		1150	my ($self, $rmp) = @_;
		1151	# mit "rum" bekleckern, nicht
		1152	$self->_create_random_map (
		1153	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1154	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1155	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1156	$rmp->{exit_on_final_map},
		1157	$rmp->{xsize}, $rmp->{ysize},
		1158	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1159	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1160	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1161	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1162	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1163	(cf::region::find $rmp->{region}), $rmp->{custom}
		1164	)
		1165	}
		1166
		1167	=item cf::map->register ($regex, $prio)
		1168
		1169	Register a handler for the map path matching the given regex at the
		1170	givne priority (higher is better, built-in handlers have priority 0, the
		1171	default).
		1172
		1173	=cut
		1174
		1175	sub register {
		1176	my (undef, $regex, $prio) = @_;
		1177	my $pkg = caller;
		1178
		1179	no strict;
		1180	push @{"$pkg\::ISA"}, __PACKAGE__;
		1181
		1182	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1183	}
		1184
		1185	# also paths starting with '/'
		1186	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1187
		1188	sub thawer_merge {
		1189	my ($self, $merge) = @_;
		1190
		1191	# we have to keep some variables in memory intact
		1192	local $self->{path};
		1193	local $self->{load_path};
		1194	local $self->{deny_save};
		1195	local $self->{deny_reset};
		1196
		1197	$self->SUPER::thawer_merge ($merge);
		1198	}
		1199
		1200	sub normalise {
		1201	my ($path, $base) = @_;
		1202
		1203	$path = "$path"; # make sure its a string
		1204
		1205	$path =~ s/\.map$//;
		1206
		1207	# map plan:
		1208	#
		1209	# /! non-realised random map exit (special hack!)
		1210	# {... are special paths that are not being touched
		1211	# ?xxx/... are special absolute paths
		1212	# ?random/... random maps
		1213	# /... normal maps
		1214	# ~user/... per-player map of a specific user
		1215
		1216	$path =~ s/$PATH_SEP/\//go;
		1217
		1218	# treat it as relative path if it starts with
		1219	# something that looks reasonable
		1220	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1221	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1222
		1223	$base =~ s{[^/]+/?$}{};
		1224	$path = "$base/$path";
		1225	}
		1226
		1227	for ($path) {
		1228	redo if s{//}{/};
		1229	redo if s{/\.?/}{/};
		1230	redo if s{/[^/]+/\.\./}{/};
		1231	}
		1232
		1233	$path
		1234	}
		1235
		1236	sub new_from_path {
		1237	my (undef, $path, $base) = @_;
		1238
		1239	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1240
		1241	$path = normalise $path, $base;
		1242
		1243	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1244	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1245	my $self = bless cf::map::new, $pkg;
		1246	$self->{path} = $path; $self->path ($path);
		1247	$self->init; # pass $1 etc.
		1248	return $self;
		1249	}
		1250	}
		1251
		1252	Carp::carp "unable to resolve path '$path' (base '$base').";
		1253	()
		1254	}
		1255
		1256	sub init {
		1257	my ($self) = @_;
		1258
		1259	$self
		1260	}
		1261
		1262	sub as_string {
		1263	my ($self) = @_;
		1264
		1265	"$self->{path}"
		1266	}
		1267
		1268	# the displayed name, this is a one way mapping
		1269	sub visible_name {
		1270	&as_string
		1271	}
		1272
		1273	# the original (read-only) location
		1274	sub load_path {
		1275	my ($self) = @_;
		1276
		1277	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1278	}
		1279
		1280	# the temporary/swap location
		1281	sub save_path {
		1282	my ($self) = @_;
		1283
		1284	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1285	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1286	}
		1287
		1288	# the unique path, undef == no special unique path
		1289	sub uniq_path {
		1290	my ($self) = @_;
		1291
		1292	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1293	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1294	}
		1295
		1296	# and all this just because we cannot iterate over
		1297	# all maps in C++...
		1298	sub change_all_map_light {
		1299	my ($change) = @_;
		1300
		1301	$_->change_map_light ($change)
		1302	for grep $_->outdoor, values %cf::MAP;
		1303	}
		1304
		1305	sub unlink_save {
		1306	my ($self) = @_;
		1307
		1308	utf8::encode (my $save = $self->save_path);
		1309	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1310	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1311	}
		1312
		1313	sub load_header_from($) {
		1314	my ($self, $path) = @_;
		1315
		1316	utf8::encode $path;
		1317	#aio_open $path, O_RDONLY, 0
		1318	# or return;
		1319
		1320	$self->_load_header ($path)
		1321	or return;
		1322
		1323	$self->{load_path} = $path;
		1324
		1325	1
		1326	}
		1327
		1328	sub load_header_orig {
		1329	my ($self) = @_;
		1330
		1331	$self->load_header_from ($self->load_path)
		1332	}
		1333
		1334	sub load_header_temp {
		1335	my ($self) = @_;
		1336
		1337	$self->load_header_from ($self->save_path)
		1338	}
		1339
		1340	sub prepare_temp {
		1341	my ($self) = @_;
		1342
		1343	$self->last_access ((delete $self->{last_access})
		1344	|| $cf::RUNTIME); #d#
		1345	# safety
		1346	$self->{instantiate_time} = $cf::RUNTIME
		1347	if $self->{instantiate_time} > $cf::RUNTIME;
		1348	}
		1349
		1350	sub prepare_orig {
		1351	my ($self) = @_;
		1352
		1353	$self->{load_original} = 1;
		1354	$self->{instantiate_time} = $cf::RUNTIME;
		1355	$self->last_access ($cf::RUNTIME);
		1356	$self->instantiate;
		1357	}
		1358
		1359	sub load_header {
		1360	my ($self) = @_;
		1361
		1362	if ($self->load_header_temp) {
		1363	$self->prepare_temp;
		1364	} else {
		1365	$self->load_header_orig
		1366	or return;
		1367	$self->prepare_orig;
		1368	}
		1369
		1370	1
		1371	}
		1372
		1373	sub find;
		1374	sub find {
		1375	my ($path, $origin) = @_;
		1376
		1377	$path = normalise $path, $origin && $origin->path;
		1378
		1379	cf::lock_wait "map_find:$path";
		1380
		1381	$cf::MAP{$path} || do {
		1382	my $guard = cf::lock_acquire "map_find:$path";
		1383	my $map = new_from_path cf::map $path
		1384	or return;
		1385
		1386	$map->{last_save} = $cf::RUNTIME;
		1387
		1388	$map->load_header
		1389	or return;
		1390
		1391	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1392	# doing this can freeze the server in a sync job, obviously
		1393	#$cf::WAIT_FOR_TICK->wait;
		1394	$map->reset;
		1395	undef $guard;
		1396	return find $path;
		1397	}
		1398
		1399	$cf::MAP{$path} = $map
		1400	}
		1401	}
		1402
		1403	sub pre_load { }
		1404	sub post_load { }
		1405
		1406	sub load {
		1407	my ($self) = @_;
		1408
		1409	local $self->{deny_reset} = 1; # loading can take a long time
		1410
		1411	my $path = $self->{path};
		1412	my $guard = cf::lock_acquire "map_load:$path";
		1413
		1414	return if $self->in_memory != cf::MAP_SWAPPED;
		1415
		1416	$self->in_memory (cf::MAP_LOADING);
		1417
		1418	$self->alloc;
		1419
		1420	$self->pre_load;
		1421
		1422	$self->_load_objects ($self->{load_path}, 1)
		1423	or return;
		1424
		1425	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1426	if delete $self->{load_original};
		1427
		1428	if (my $uniq = $self->uniq_path) {
		1429	utf8::encode $uniq;
		1430	if (aio_open $uniq, O_RDONLY, 0) {
		1431	$self->clear_unique_items;
		1432	$self->_load_objects ($uniq, 0);
		1433	}
		1434	}
		1435
		1436	Coro::cede;
		1437
		1438	# now do the right thing for maps
		1439	$self->link_multipart_objects;
		1440
		1441	unless ($self->{deny_activate}) {
		1442	$self->decay_objects;
		1443	$self->fix_auto_apply;
		1444	$self->update_buttons;
		1445	Coro::cede;
		1446	$self->set_darkness_map;
		1447	$self->difficulty ($self->estimate_difficulty)
		1448	unless $self->difficulty;
		1449	Coro::cede;
		1450	$self->activate;
		1451	}
		1452
		1453	$self->post_load;
		1454
		1455	$self->in_memory (cf::MAP_IN_MEMORY);
		1456	}
		1457
		1458	sub customise_for {
654	my ($pl, $buf) = @_;	1459	my ($self, $ob) = @_;
655		1460
656	my $msg = eval { from_json $buf };	1461	return find "~" . $ob->name . "/" . $self->{path}
		1462	if $self->per_player;
657		1463
658	if (ref $msg) {	1464	$self
659	if (my $cb = $extcmd{$msg->{msgtype}}) {	1465	}
660	if (my %reply = $cb->[0]->($pl, $msg)) {	1466
661	$pl->ext_reply ($msg->{msgid}, %reply);	1467	# find and load all maps in the 3x3 area around a map
662	}	1468	sub load_diag {
		1469	my ($map) = @_;
		1470
		1471	my @diag; # diagonal neighbours
		1472
		1473	for (0 .. 3) {
		1474	my $neigh = $map->tile_path ($_)
		1475	or next;
		1476	$neigh = find $neigh, $map
		1477	or next;
		1478	$neigh->load;
		1479
		1480	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1481	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1482	}
		1483
		1484	for (@diag) {
		1485	my $neigh = find @$_
		1486	or next;
		1487	$neigh->load;
		1488	}
		1489	}
		1490
		1491	sub find_sync {
		1492	my ($path, $origin) = @_;
		1493
		1494	cf::sync_job { find $path, $origin }
		1495	}
		1496
		1497	sub do_load_sync {
		1498	my ($map) = @_;
		1499
		1500	cf::sync_job { $map->load };
		1501	}
		1502
		1503	our %MAP_PREFETCH;
		1504	our $MAP_PREFETCHER = undef;
		1505
		1506	sub find_async {
		1507	my ($path, $origin) = @_;
		1508
		1509	$path = normalise $path, $origin && $origin->{path};
		1510
		1511	if (my $map = $cf::MAP{$path}) {
		1512	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1513	}
		1514
		1515	undef $MAP_PREFETCH{$path};
		1516	$MAP_PREFETCHER ||= cf::async {
		1517	while (%MAP_PREFETCH) {
		1518	for my $path (keys %MAP_PREFETCH) {
		1519	my $map = find $path
		1520	or next;
		1521	$map->load;
		1522
		1523	delete $MAP_PREFETCH{$path};
663	}	1524	}
		1525	}
		1526	undef $MAP_PREFETCHER;
		1527	};
		1528	$MAP_PREFETCHER->prio (6);
		1529
		1530	()
		1531	}
		1532
		1533	sub save {
		1534	my ($self) = @_;
		1535
		1536	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1537
		1538	$self->{last_save} = $cf::RUNTIME;
		1539
		1540	return unless $self->dirty;
		1541
		1542	my $save = $self->save_path; utf8::encode $save;
		1543	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1544
		1545	$self->{load_path} = $save;
		1546
		1547	return if $self->{deny_save};
		1548
		1549	local $self->{last_access} = $self->last_access;#d#
		1550
		1551	cf::async {
		1552	$_->contr->save for $self->players;
		1553	};
		1554
		1555	if ($uniq) {
		1556	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1557	$self->_save_objects ($uniq, cf::IO_UNIQUES);
664	} else {	1558	} else {
665	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1559	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
666	}
667
668	cf::override;
669	},	1560	}
670	;	1561	}
671		1562
672	#############################################################################	1563	sub swap_out {
673	# load/save/clean perl data associated with a map
674
675	*cf::mapsupport::on_clean = sub {
676	my ($map) = @_;	1564	my ($self) = @_;
677		1565
678	my $path = $map->tmpname;	1566	# save first because save cedes
679	defined $path or return;	1567	$self->save;
680		1568
681	unlink "$path.pst";	1569	my $lock = cf::lock_acquire "map_data:" . $self->path;
682	};
683		1570
684	attach_to_maps prio => -10000, package => cf::mapsupport::;	1571	return if $self->players;
		1572	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1573	return if $self->{deny_save};
685		1574
686	#############################################################################	1575	$self->clear;
687	# load/save perl data associated with player->ob objects	1576	$self->in_memory (cf::MAP_SWAPPED);
688
689	sub all_objects(@) {
690	@_, map all_objects ($_->inv), @_
691	}	1577	}
692		1578
693	# TODO: compatibility cruft, remove when no longer needed	1579	sub reset_at {
694	attach_to_players	1580	my ($self) = @_;
695	on_load => sub {
696	my ($pl, $path) = @_;
697		1581
698	for my $o (all_objects $pl->ob) {	1582	# TODO: safety, remove and allow resettable per-player maps
699	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1583	return 1e99 if $self->isa ("ext::map_per_player");#d#
700	$o->set_ob_key_value ("_perl_data");	1584	return 1e99 if $self->{deny_reset};
701		1585
702	%$o = %{ Storable::thaw pack "H*", $value };	1586	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
703	}	1587	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
704	}	1588
		1589	$time + $to
		1590	}
		1591
		1592	sub should_reset {
		1593	my ($self) = @_;
		1594
		1595	$self->reset_at <= $cf::RUNTIME
		1596	}
		1597
		1598	sub reset {
		1599	my ($self) = @_;
		1600
		1601	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1602
		1603	return if $self->players;
		1604	return if $self->isa ("ext::map_per_player");#d#
		1605
		1606	warn "resetting map ", $self->path;#d#
		1607
		1608	$self->in_memory (cf::MAP_SWAPPED);
		1609
		1610	# need to save uniques path
		1611	unless ($self->{deny_save}) {
		1612	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1613
		1614	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1615	if $uniq;
705	},	1616	}
706	;
707		1617
708	#############################################################################	1618	delete $cf::MAP{$self->path};
709	# core extensions - in perl
710		1619
711	=item cf::player::exists $login	1620	$self->clear;
712		1621
713	Returns true when the given account exists.	1622	$_->clear_links_to ($self) for values %cf::MAP;
714		1623
715	=cut	1624	$self->unlink_save;
716		1625	$self->destroy;
717	sub cf::player::exists($) {
718	cf::player::find $_[0]
719	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
720	}	1626	}
721		1627
		1628	my $nuke_counter = "aaaa";
		1629
		1630	sub nuke {
		1631	my ($self) = @_;
		1632
		1633	delete $cf::MAP{$self->path};
		1634
		1635	$self->unlink_save;
		1636
		1637	bless $self, "cf::map";
		1638	delete $self->{deny_reset};
		1639	$self->{deny_save} = 1;
		1640	$self->reset_timeout (1);
		1641	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1642
		1643	$cf::MAP{$self->path} = $self;
		1644
		1645	$self->reset; # polite request, might not happen
		1646	}
		1647
		1648	=item cf::map::unique_maps
		1649
		1650	Returns an arrayref of paths of all shared maps that have
		1651	instantiated unique items. May block.
		1652
		1653	=cut
		1654
		1655	sub unique_maps() {
		1656	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1657	or return;
		1658
		1659	my @paths;
		1660
		1661	for (@$files) {
		1662	utf8::decode $_;
		1663	next if /\.pst$/;
		1664	next unless /^$PATH_SEP/o;
		1665
		1666	push @paths, cf::map::normalise $_;
		1667	}
		1668
		1669	\@paths
		1670	}
		1671
		1672	package cf;
		1673
		1674	=back
		1675
		1676	=head3 cf::object
		1677
		1678	=cut
		1679
		1680	package cf::object;
		1681
		1682	=over 4
		1683
		1684	=item $ob->inv_recursive
		1685
		1686	Returns the inventory of the object _and_ their inventories, recursively.
		1687
		1688	=cut
		1689
		1690	sub inv_recursive_;
		1691	sub inv_recursive_ {
		1692	map { $_, inv_recursive_ $_->inv } @_
		1693	}
		1694
		1695	sub inv_recursive {
		1696	inv_recursive_ inv $_[0]
		1697	}
		1698
		1699	package cf;
		1700
		1701	=back
		1702
		1703	=head3 cf::object::player
		1704
		1705	=over 4
		1706
722	=item $player->reply ($npc, $msg[, $flags])	1707	=item $player_object->reply ($npc, $msg[, $flags])
723		1708
724	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1709	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
725	can be C<undef>. Does the right thing when the player is currently in a	1710	can be C<undef>. Does the right thing when the player is currently in a
726	dialogue with the given NPC character.	1711	dialogue with the given NPC character.
727		1712
728	=cut	1713	=cut
729		1714
730	# rough implementation of a future "reply" method that works	1715	# rough implementation of a future "reply" method that works
731	# with dialog boxes.	1716	# with dialog boxes.
		1717	#TODO: the first argument must go, split into a $npc->reply_to ( method
732	sub cf::object::player::reply($$$;$) {	1718	sub cf::object::player::reply($$$;$) {
733	my ($self, $npc, $msg, $flags) = @_;	1719	my ($self, $npc, $msg, $flags) = @_;
734		1720
735	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1721	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
736		1722
…		…
740	$msg = $npc->name . " says: $msg" if $npc;	1726	$msg = $npc->name . " says: $msg" if $npc;
741	$self->message ($msg, $flags);	1727	$self->message ($msg, $flags);
742	}	1728	}
743	}	1729	}
744		1730
745	=item $player->ext_reply ($msgid, $msgtype, %msg)	1731	=item $player_object->may ("access")
746		1732
747	Sends an ext reply to the player.	1733	Returns wether the given player is authorized to access resource "access"
		1734	(e.g. "command_wizcast").
748		1735
749	=cut	1736	=cut
750		1737
751	sub cf::player::ext_reply($$$%) {	1738	sub cf::object::player::may {
		1739	my ($self, $access) = @_;
		1740
		1741	$self->flag (cf::FLAG_WIZ) ||
		1742	(ref $cf::CFG{"may_$access"}
		1743	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1744	: $cf::CFG{"may_$access"})
		1745	}
		1746
		1747	=item $player_object->enter_link
		1748
		1749	Freezes the player and moves him/her to a special map (C<{link}>).
		1750
		1751	The player should be reasonably safe there for short amounts of time. You
		1752	I<MUST> call C<leave_link> as soon as possible, though.
		1753
		1754	Will never block.
		1755
		1756	=item $player_object->leave_link ($map, $x, $y)
		1757
		1758	Moves the player out of the special C<{link}> map onto the specified
		1759	map. If the map is not valid (or omitted), the player will be moved back
		1760	to the location he/she was before the call to C<enter_link>, or, if that
		1761	fails, to the emergency map position.
		1762
		1763	Might block.
		1764
		1765	=cut
		1766
		1767	sub link_map {
		1768	unless ($LINK_MAP) {
		1769	$LINK_MAP = cf::map::find "{link}"
		1770	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1771	$LINK_MAP->load;
		1772	}
		1773
		1774	$LINK_MAP
		1775	}
		1776
		1777	sub cf::object::player::enter_link {
		1778	my ($self) = @_;
		1779
		1780	$self->deactivate_recursive;
		1781
		1782	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1783
		1784	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1785	if $self->map;
		1786
		1787	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1788	}
		1789
		1790	sub cf::object::player::leave_link {
		1791	my ($self, $map, $x, $y) = @_;
		1792
		1793	my $link_pos = delete $self->{_link_pos};
		1794
		1795	unless ($map) {
		1796	# restore original map position
		1797	($map, $x, $y) = @{ $link_pos || [] };
		1798	$map = cf::map::find $map;
		1799
		1800	unless ($map) {
		1801	($map, $x, $y) = @$EMERGENCY_POSITION;
		1802	$map = cf::map::find $map
		1803	or die "FATAL: cannot load emergency map\n";
		1804	}
		1805	}
		1806
		1807	($x, $y) = (-1, -1)
		1808	unless (defined $x) && (defined $y);
		1809
		1810	# use -1 or undef as default coordinates, not 0, 0
		1811	($x, $y) = ($map->enter_x, $map->enter_y)
		1812	if $x <=0 && $y <= 0;
		1813
		1814	$map->load;
		1815	$map->load_diag;
		1816
		1817	return unless $self->contr->active;
		1818	$self->activate_recursive;
		1819
		1820	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1821	$self->enter_map ($map, $x, $y);
		1822	}
		1823
		1824	cf::player->attach (
		1825	on_logout => sub {
		1826	my ($pl) = @_;
		1827
		1828	# abort map switching before logout
		1829	if ($pl->ob->{_link_pos}) {
		1830	cf::sync_job {
		1831	$pl->ob->leave_link
		1832	};
		1833	}
		1834	},
		1835	on_login => sub {
		1836	my ($pl) = @_;
		1837
		1838	# try to abort aborted map switching on player login :)
		1839	# should happen only on crashes
		1840	if ($pl->ob->{_link_pos}) {
		1841	$pl->ob->enter_link;
		1842	(async {
		1843	$pl->ob->reply (undef,
		1844	"There was an internal problem at your last logout, "
		1845	. "the server will try to bring you to your intended destination in a second.",
		1846	cf::NDI_RED);
		1847	# we need this sleep as the login has a concurrent enter_exit running
		1848	# and this sleep increases chances of the player not ending up in scorn
		1849	Coro::Timer::sleep 1;
		1850	$pl->ob->leave_link;
		1851	})->prio (2);
		1852	}
		1853	},
		1854	);
		1855
		1856	=item $player_object->goto ($path, $x, $y)
		1857
		1858	=cut
		1859
		1860	sub cf::object::player::goto {
		1861	my ($self, $path, $x, $y) = @_;
		1862
		1863	$self->enter_link;
		1864
		1865	(async {
		1866	my $map = eval {
		1867	my $map = cf::map::find $path;
		1868	$map = $map->customise_for ($self) if $map;
		1869	$map
		1870	} or
		1871	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1872
		1873	$self->leave_link ($map, $x, $y);
		1874	})->prio (1);
		1875	}
		1876
		1877	=item $player_object->enter_exit ($exit_object)
		1878
		1879	=cut
		1880
		1881	sub parse_random_map_params {
		1882	my ($spec) = @_;
		1883
		1884	my $rmp = { # defaults
		1885	xsize => (cf::rndm 15, 40),
		1886	ysize => (cf::rndm 15, 40),
		1887	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1888	#layout => string,
		1889	};
		1890
		1891	for (split /\n/, $spec) {
		1892	my ($k, $v) = split /\s+/, $_, 2;
		1893
		1894	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1895	}
		1896
		1897	$rmp
		1898	}
		1899
		1900	sub prepare_random_map {
		1901	my ($exit) = @_;
		1902
		1903	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1904
		1905	# all this does is basically replace the /! path by
		1906	# a new random map path (?random/...) with a seed
		1907	# that depends on the exit object
		1908
		1909	my $rmp = parse_random_map_params $exit->msg;
		1910
		1911	if ($exit->map) {
		1912	$rmp->{region} = $exit->region->name;
		1913	$rmp->{origin_map} = $exit->map->path;
		1914	$rmp->{origin_x} = $exit->x;
		1915	$rmp->{origin_y} = $exit->y;
		1916	}
		1917
		1918	$rmp->{random_seed} ||= $exit->random_seed;
		1919
		1920	my $data = cf::to_json $rmp;
		1921	my $md5 = Digest::MD5::md5_hex $data;
		1922	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1923
		1924	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1925	aio_write $fh, 0, (length $data), $data, 0;
		1926	undef $fh;
		1927	aio_rename "$meta~", $meta;
		1928
		1929	$exit->slaying ("?random/$md5");
		1930	$exit->msg (undef);
		1931	}
		1932	}
		1933
		1934	sub cf::object::player::enter_exit {
752	my ($self, $id, %msg) = @_;	1935	my ($self, $exit) = @_;
753		1936
754	$msg{msgid} = $id;	1937	return unless $self->type == cf::PLAYER;
755		1938
756	$self->send ("ext " . to_json \%msg);	1939	if ($exit->slaying eq "/!") {
757	}	1940	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1941	cf::sync_job { prepare_random_map $exit };
		1942	}
758		1943
759	#############################################################################	1944	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
760	# map scripting support	1945	my $hp = $exit->stats->hp;
		1946	my $sp = $exit->stats->sp;
		1947
		1948	$self->enter_link;
		1949
		1950	(async {
		1951	$self->deactivate_recursive; # just to be sure
		1952	unless (eval {
		1953	$self->goto ($slaying, $hp, $sp);
		1954
		1955	1;
		1956	}) {
		1957	$self->message ("Something went wrong deep within the crossfire server. "
		1958	. "I'll try to bring you back to the map you were before. "
		1959	. "Please report this to the dungeon master!",
		1960	cf::NDI_UNIQUE | cf::NDI_RED);
		1961
		1962	warn "ERROR in enter_exit: $@";
		1963	$self->leave_link;
		1964	}
		1965	})->prio (1);
		1966	}
		1967
		1968	=head3 cf::client
		1969
		1970	=over 4
		1971
		1972	=item $client->send_drawinfo ($text, $flags)
		1973
		1974	Sends a drawinfo packet to the client. Circumvents output buffering so
		1975	should not be used under normal circumstances.
		1976
		1977	=cut
		1978
		1979	sub cf::client::send_drawinfo {
		1980	my ($self, $text, $flags) = @_;
		1981
		1982	utf8::encode $text;
		1983	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1984	}
		1985
		1986
		1987	=item $success = $client->query ($flags, "text", \&cb)
		1988
		1989	Queues a query to the client, calling the given callback with
		1990	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1991	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1992
		1993	Queries can fail, so check the return code. Or don't, as queries will become
		1994	reliable at some point in the future.
		1995
		1996	=cut
		1997
		1998	sub cf::client::query {
		1999	my ($self, $flags, $text, $cb) = @_;
		2000
		2001	return unless $self->state == ST_PLAYING
		2002	|| $self->state == ST_SETUP
		2003	|| $self->state == ST_CUSTOM;
		2004
		2005	$self->state (ST_CUSTOM);
		2006
		2007	utf8::encode $text;
		2008	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2009
		2010	$self->send_packet ($self->{query_queue}[0][0])
		2011	if @{ $self->{query_queue} } == 1;
		2012	}
		2013
		2014	cf::client->attach (
		2015	on_reply => sub {
		2016	my ($ns, $msg) = @_;
		2017
		2018	# this weird shuffling is so that direct followup queries
		2019	# get handled first
		2020	my $queue = delete $ns->{query_queue}
		2021	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2022
		2023	(shift @$queue)->[1]->($msg);
		2024	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2025
		2026	push @{ $ns->{query_queue} }, @$queue;
		2027
		2028	if (@{ $ns->{query_queue} } == @$queue) {
		2029	if (@$queue) {
		2030	$ns->send_packet ($ns->{query_queue}[0][0]);
		2031	} else {
		2032	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2033	}
		2034	}
		2035	},
		2036	);
		2037
		2038	=item $client->async (\&cb)
		2039
		2040	Create a new coroutine, running the specified callback. The coroutine will
		2041	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2042	or loss of connection).
		2043
		2044	=cut
		2045
		2046	sub cf::client::async {
		2047	my ($self, $cb) = @_;
		2048
		2049	my $coro = &Coro::async ($cb);
		2050
		2051	$coro->on_destroy (sub {
		2052	delete $self->{_coro}{$coro+0};
		2053	});
		2054
		2055	$self->{_coro}{$coro+0} = $coro;
		2056
		2057	$coro
		2058	}
		2059
		2060	cf::client->attach (
		2061	on_destroy => sub {
		2062	my ($ns) = @_;
		2063
		2064	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2065	},
		2066	);
		2067
		2068	=back
		2069
		2070
		2071	=head2 SAFE SCRIPTING
		2072
		2073	Functions that provide a safe environment to compile and execute
		2074	snippets of perl code without them endangering the safety of the server
		2075	itself. Looping constructs, I/O operators and other built-in functionality
		2076	is not available in the safe scripting environment, and the number of
		2077	functions and methods that can be called is greatly reduced.
		2078
		2079	=cut
761		2080
762	our $safe = new Safe "safe";	2081	our $safe = new Safe "safe";
763	our $safe_hole = new Safe::Hole;	2082	our $safe_hole = new Safe::Hole;
764		2083
765	$SIG{FPE} = 'IGNORE';	2084	$SIG{FPE} = 'IGNORE';
766		2085
767	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2086	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
768		2087
769	# here we export the classes and methods available to script code	2088	# here we export the classes and methods available to script code
770		2089
		2090	=pod
		2091
		2092	The following fucntions and emthods are available within a safe environment:
		2093
		2094	cf::object contr pay_amount pay_player map
		2095	cf::object::player player
		2096	cf::player peaceful
		2097	cf::map trigger
		2098
		2099	=cut
		2100
771	for (	2101	for (
772	["cf::object" => qw(contr pay_amount pay_player)],	2102	["cf::object" => qw(contr pay_amount pay_player map)],
773	["cf::object::player" => qw(player)],	2103	["cf::object::player" => qw(player)],
774	["cf::player" => qw(peaceful)],	2104	["cf::player" => qw(peaceful)],
		2105	["cf::map" => qw(trigger)],
775	) {	2106	) {
776	no strict 'refs';	2107	no strict 'refs';
777	my ($pkg, @funs) = @$_;	2108	my ($pkg, @funs) = @$_;
778	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2109	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
779	for @funs;	2110	for @funs;
780	}	2111	}
		2112
		2113	=over 4
		2114
		2115	=item @retval = safe_eval $code, [var => value, ...]
		2116
		2117	Compiled and executes the given perl code snippet. additional var/value
		2118	pairs result in temporary local (my) scalar variables of the given name
		2119	that are available in the code snippet. Example:
		2120
		2121	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2122
		2123	=cut
781		2124
782	sub safe_eval($;@) {	2125	sub safe_eval($;@) {
783	my ($code, %vars) = @_;	2126	my ($code, %vars) = @_;
784		2127
785	my $qcode = $code;	2128	my $qcode = $code;
…		…
808	}	2151	}
809		2152
810	wantarray ? @res : $res[0]	2153	wantarray ? @res : $res[0]
811	}	2154	}
812		2155
		2156	=item cf::register_script_function $function => $cb
		2157
		2158	Register a function that can be called from within map/npc scripts. The
		2159	function should be reasonably secure and should be put into a package name
		2160	like the extension.
		2161
		2162	Example: register a function that gets called whenever a map script calls
		2163	C<rent::overview>, as used by the C<rent> extension.
		2164
		2165	cf::register_script_function "rent::overview" => sub {
		2166	...
		2167	};
		2168
		2169	=cut
		2170
813	sub register_script_function {	2171	sub register_script_function {
814	my ($fun, $cb) = @_;	2172	my ($fun, $cb) = @_;
815		2173
816	no strict 'refs';	2174	no strict 'refs';
817	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2175	*{"safe::$fun"} = $safe_hole->wrap ($cb);
818	}	2176	}
		2177
		2178	=back
		2179
		2180	=cut
819		2181
820	#############################################################################	2182	#############################################################################
821		2183
822	=head2 EXTENSION DATABASE SUPPORT	2184	=head2 EXTENSION DATABASE SUPPORT
823		2185
…		…
828	The parameter C<$family> should best start with the name of the extension	2190	The parameter C<$family> should best start with the name of the extension
829	using it, it should be unique.	2191	using it, it should be unique.
830		2192
831	=over 4	2193	=over 4
832		2194
833	=item $hashref = cf::db_get $family
834
835	Return a hashref for use by the extension C<$family>, which can be
836	modified. After modifications, you have to call C<cf::db_dirty> or
837	C<cf::db_sync>.
838
839	=item $value = cf::db_get $family => $key	2195	=item $value = cf::db_get $family => $key
840		2196
841	Returns a single value from the database	2197	Returns a single value from the database.
842
843	=item cf::db_put $family => $hashref
844
845	Stores the given family hashref into the database. Updates are delayed, if
846	you want the data to be synced to disk immediately, use C<cf::db_sync>.
847		2198
848	=item cf::db_put $family => $key => $value	2199	=item cf::db_put $family => $key => $value
849		2200
850	Stores the given C<$value> in the family hash. Updates are delayed, if you	2201	Stores the given C<$value> in the family.
851	want the data to be synced to disk immediately, use C<cf::db_sync>.
852		2202
853	=item cf::db_dirty
854
855	Marks the database as dirty, to be updated at a later time.
856
857	=item cf::db_sync
858
859	Immediately write the database to disk I<if it is dirty>.
860
861	=cut	2203	=cut
862		2204
863	{	2205	our $DB;
864	my $db;	2206
		2207	sub db_init {
		2208	unless ($DB) {
		2209	$DB = BDB::db_create $DB_ENV;
		2210
		2211	cf::sync_job {
		2212	eval {
		2213	$DB->set_flags (BDB::CHKSUM);
		2214
		2215	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2216	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2217	cf::cleanup "db_open(db): $!" if $!;
		2218	};
		2219	cf::cleanup "db_open(db): $@" if $@;
		2220	};
		2221
865	my $path = cf::localdir . "/database.pst";	2222	my $path = cf::localdir . "/database.pst";
		2223	if (stat $path) {
		2224	cf::sync_job {
		2225	my $pst = Storable::retrieve $path;
866		2226
867	sub db_load() {	2227	cf::db_put (board => data => $pst->{board});
868	warn "loading database $path\n";#d# remove later	2228	cf::db_put (guildrules => data => $pst->{guildrules});
869	$db = stat $path ? Storable::retrieve $path : { };	2229	cf::db_put (rent => balance => $pst->{rent}{balance});
870	}	2230	BDB::db_env_txn_checkpoint $DB_ENV;
871		2231
872	my $pid;	2232	unlink $path;
873
874	sub db_save() {
875	warn "saving database $path\n";#d# remove later
876	waitpid $pid, 0 if $pid;
877	unless ($pid = fork) {
878	$db->{_meta}{version} = 1;
879	Storable::nstore $db, "$path~";
880	rename "$path~", $path;
881	cf::_exit 0 if defined $pid;
882	}	2233	};
883	}	2234	}
884
885	my $dirty;
886
887	sub db_sync() {
888	db_save if $dirty;
889	undef $dirty;
890	}
891
892	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
893	db_sync;
894	});	2235	}
		2236	}
895		2237
896	sub db_dirty() {
897	$dirty = 1;
898	$idle->start;
899	}
900
901	sub db_get($;$) {	2238	sub db_get($$) {
902	@_ >= 2	2239	my $key = "$_[0]/$_[1]";
903	? $db->{$_[0]}{$_[1]}
904	: ($db->{$_[0]} ||= { })
905	}
906		2240
		2241	cf::sync_job {
		2242	BDB::db_get $DB, undef, $key, my $data;
		2243
		2244	$! ? ()
		2245	: Compress::LZF::sthaw $data
		2246	}
		2247	}
		2248
907	sub db_put($$;$) {	2249	sub db_put($$$) {
908	if (@_ >= 3) {	2250	BDB::dbreq_pri 4;
909	$db->{$_[0]}{$_[1]} = $_[2];	2251	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
910	} else {
911	$db->{$_[0]} = $_[1];
912	}
913	db_dirty;
914	}
915	}	2252	}
916		2253
917	#############################################################################	2254	#############################################################################
918	# the server's main()	2255	# the server's init and main functions
		2256
		2257	sub init_resources {
		2258	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2259	or die "unable to load regions file\n";#d#
		2260	}
		2261
		2262	sub cfg_load {
		2263	open my $fh, "<:utf8", cf::confdir . "/config"
		2264	or return;
		2265
		2266	local $/;
		2267	*CFG = YAML::Syck::Load <$fh>;
		2268
		2269	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2270
		2271	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2272	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2273
		2274	if (exists $CFG{mlockall}) {
		2275	eval {
		2276	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2277	and die "WARNING: m(un)lockall failed: $!\n";
		2278	};
		2279	warn $@ if $@;
		2280	}
		2281	}
		2282
		2283	sub init {
		2284	init_resources;
		2285	}
919		2286
920	sub main {	2287	sub main {
		2288	# we must not ever block the main coroutine
		2289	local $Coro::idle = sub {
		2290	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2291	(async {
		2292	Event::one_event;
		2293	})->prio (Coro::PRIO_MAX);
		2294	};
		2295
921	db_load;	2296	cfg_load;
		2297	db_init;
922	load_extensions;	2298	load_extensions;
		2299
		2300	$TICK_WATCHER->start;
923	Event::loop;	2301	Event::loop;
924	}	2302	}
925		2303
926	#############################################################################	2304	#############################################################################
927	# initialisation	2305	# initialisation and cleanup
928		2306
		2307	# install some emergency cleanup handlers
		2308	BEGIN {
		2309	for my $signal (qw(INT HUP TERM)) {
		2310	Event->signal (
		2311	reentrant => 0,
		2312	data => WF_AUTOCANCEL,
		2313	signal => $signal,
		2314	prio => 0,
		2315	cb => sub {
		2316	cf::cleanup "SIG$signal";
		2317	},
		2318	);
		2319	}
		2320	}
		2321
		2322	sub emergency_save() {
		2323	my $freeze_guard = cf::freeze_mainloop;
		2324
		2325	warn "enter emergency perl save\n";
		2326
		2327	cf::sync_job {
		2328	# use a peculiar iteration method to avoid tripping on perl
		2329	# refcount bugs in for. also avoids problems with players
		2330	# and maps saved/destroyed asynchronously.
		2331	warn "begin emergency player save\n";
		2332	for my $login (keys %cf::PLAYER) {
		2333	my $pl = $cf::PLAYER{$login} or next;
		2334	$pl->valid or next;
		2335	$pl->save;
		2336	}
		2337	warn "end emergency player save\n";
		2338
		2339	warn "begin emergency map save\n";
		2340	for my $path (keys %cf::MAP) {
		2341	my $map = $cf::MAP{$path} or next;
		2342	$map->valid or next;
		2343	$map->save;
		2344	}
		2345	warn "end emergency map save\n";
		2346
		2347	warn "begin emergency database checkpoint\n";
		2348	BDB::db_env_txn_checkpoint $DB_ENV;
		2349	warn "end emergency database checkpoint\n";
		2350	};
		2351
		2352	warn "leave emergency perl save\n";
		2353	}
		2354
		2355	sub post_cleanup {
		2356	my ($make_core) = @_;
		2357
		2358	warn Carp::longmess "post_cleanup backtrace"
		2359	if $make_core;
		2360	}
		2361
929	sub _perl_reload(&) {	2362	sub reload() {
930	my ($msg) = @_;	2363	# can/must only be called in main
		2364	if ($Coro::current != $Coro::main) {
		2365	warn "can only reload from main coroutine";
		2366	return;
		2367	}
931		2368
932	$msg->("reloading...");	2369	warn "reloading...";
933		2370
934	eval {	2371	warn "entering sync_job";
935	# cancel all watchers	2372
		2373	cf::sync_job {
		2374	cf::write_runtime; # external watchdog should not bark
		2375	cf::emergency_save;
		2376	cf::write_runtime; # external watchdog should not bark
		2377
		2378	warn "syncing database to disk";
		2379	BDB::db_env_txn_checkpoint $DB_ENV;
		2380
		2381	# if anything goes wrong in here, we should simply crash as we already saved
		2382
		2383	warn "cancelling all WF_AUTOCANCEL watchers";
936	$_->cancel for Event::all_watchers;	2384	for (Event::all_watchers) {
		2385	$_->cancel if $_->data & WF_AUTOCANCEL;
		2386	}
937		2387
938	# unload all extensions	2388	warn "flushing outstanding aio requests";
939	for (@exts) {	2389	for (;;) {
940	$msg->("unloading <$_>");	2390	BDB::flush;
941	unload_extension $_;	2391	IO::AIO::flush;
		2392	Coro::cede;
		2393	last unless IO::AIO::nreqs || BDB::nreqs;
		2394	warn "iterate...";
		2395	}
		2396
		2397	warn "cancelling all extension coros";
		2398	$_->cancel for values %EXT_CORO;
		2399	%EXT_CORO = ();
		2400
		2401	warn "removing commands";
		2402	%COMMAND = ();
		2403
		2404	warn "removing ext commands";
		2405	%EXTCMD = ();
		2406
		2407	warn "unloading/nuking all extensions";
		2408	for my $pkg (@EXTS) {
		2409	warn "... unloading $pkg";
		2410
		2411	if (my $cb = $pkg->can ("unload")) {
		2412	eval {
		2413	$cb->($pkg);
		2414	1
		2415	} or warn "$pkg unloaded, but with errors: $@";
942	}	2416	}
943		2417
		2418	warn "... nuking $pkg";
		2419	Symbol::delete_package $pkg;
		2420	}
		2421
944	# unload all modules loaded from $LIBDIR	2422	warn "unloading all perl modules loaded from $LIBDIR";
945	while (my ($k, $v) = each %INC) {	2423	while (my ($k, $v) = each %INC) {
946	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2424	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
947		2425
948	$msg->("removing <$k>");	2426	warn "... unloading $k";
949	delete $INC{$k};	2427	delete $INC{$k};
950		2428
951	$k =~ s/\.pm$//;	2429	$k =~ s/\.pm$//;
952	$k =~ s/\//::/g;	2430	$k =~ s/\//::/g;
953		2431
…		…
956	}	2434	}
957		2435
958	Symbol::delete_package $k;	2436	Symbol::delete_package $k;
959	}	2437	}
960		2438
961	# sync database to disk
962	cf::db_sync;
963
964	# get rid of safe::, as good as possible	2439	warn "getting rid of safe::, as good as possible";
965	Symbol::delete_package "safe::$_"	2440	Symbol::delete_package "safe::$_"
966	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2441	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
967		2442
968	# remove register_script_function callbacks
969	# TODO
970
971	# unload cf.pm "a bit"	2443	warn "unloading cf.pm \"a bit\"";
972	delete $INC{"cf.pm"};	2444	delete $INC{"cf.pm"};
973		2445
974	# don't, removes xs symbols, too,	2446	# don't, removes xs symbols, too,
975	# and global variables created in xs	2447	# and global variables created in xs
976	#Symbol::delete_package __PACKAGE__;	2448	#Symbol::delete_package __PACKAGE__;
977		2449
978	# reload cf.pm	2450	warn "unload completed, starting to reload now";
		2451
979	$msg->("reloading cf.pm");	2452	warn "reloading cf.pm";
980	require cf;	2453	require cf;
		2454	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
981		2455
982	# load database again	2456	warn "loading config and database again";
983	cf::db_load;	2457	cf::cfg_load;
984		2458
985	# load extensions	2459	warn "loading extensions";
986	$msg->("load extensions");
987	cf::load_extensions;	2460	cf::load_extensions;
988		2461
989	# reattach attachments to objects	2462	warn "reattaching attachments to objects/players";
990	$msg->("reattach");
991	_global_reattach;	2463	_global_reattach;
		2464	warn "reattaching attachments to maps";
		2465	reattach $_ for values %MAP;
		2466
		2467	warn "loading reloadable resources";
		2468	init_resources;
		2469
		2470	warn "leaving sync_job";
		2471
		2472	1
		2473	} or do {
		2474	warn $@;
		2475	warn "error while reloading, exiting.";
		2476	exit 1;
992	};	2477	};
993	$msg->($@) if $@;
994		2478
995	$msg->("reloaded");	2479	warn "reloaded";
996	};	2480	};
997		2481
998	sub perl_reload() {	2482	our $RELOAD_WATCHER; # used only during reload
999	_perl_reload {
1000	warn $_[0];
1001	print "$_[0]\n";
1002	};
1003	}
1004		2483
1005	register_command "perl-reload", 0, sub {	2484	register_command "reload" => sub {
1006	my ($who, $arg) = @_;	2485	my ($who, $arg) = @_;
1007		2486
1008	if ($who->flag (FLAG_WIZ)) {	2487	if ($who->flag (FLAG_WIZ)) {
1009	_perl_reload {	2488	$who->message ("reloading server.");
1010	warn $_[0];	2489
1011	$who->message ($_[0]);	2490	# doing reload synchronously and two reloads happen back-to-back,
		2491	# coro crashes during coro_state_free->destroy here.
		2492
		2493	$RELOAD_WATCHER ||= Event->timer (
		2494	reentrant => 0,
		2495	after => 0,
		2496	data => WF_AUTOCANCEL,
		2497	cb => sub {
		2498	reload;
		2499	undef $RELOAD_WATCHER;
		2500	},
1012	};	2501	);
1013	}	2502	}
1014	};	2503	};
1015		2504
1016	register "<global>", __PACKAGE__;
1017
1018	unshift @INC, $LIBDIR;	2505	unshift @INC, $LIBDIR;
1019		2506
		2507	my $bug_warning = 0;
		2508
1020	$TICK_WATCHER = Event->timer (	2509	$TICK_WATCHER = Event->timer (
		2510	reentrant => 0,
		2511	parked => 1,
1021	prio => 1,	2512	prio => 0,
1022	at => $NEXT_TICK || 1,	2513	at => $NEXT_TICK || $TICK,
		2514	data => WF_AUTOCANCEL,
1023	cb => sub {	2515	cb => sub {
		2516	if ($Coro::current != $Coro::main) {
		2517	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2518	unless ++$bug_warning > 10;
		2519	return;
		2520	}
		2521
		2522	$NOW = Event::time;
		2523
1024	cf::server_tick; # one server iteration	2524	cf::server_tick; # one server iteration
1025		2525	$RUNTIME += $TICK;
1026	my $NOW = Event::time;
1027	$NEXT_TICK += $TICK;	2526	$NEXT_TICK += $TICK;
1028		2527
		2528	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2529	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2530	Coro::async_pool {
		2531	write_runtime
		2532	or warn "ERROR: unable to write runtime file: $!";
		2533	};
		2534	}
		2535
		2536	$WAIT_FOR_TICK->broadcast;
		2537	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2538
		2539	# my $AFTER = Event::time;
		2540	# warn $AFTER - $NOW;#d#
		2541
1029	# if we are delayed by four ticks, skip them all	2542	# if we are delayed by four ticks or more, skip them all
1030	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2543	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1031		2544
1032	$TICK_WATCHER->at ($NEXT_TICK);	2545	$TICK_WATCHER->at ($NEXT_TICK);
1033	$TICK_WATCHER->start;	2546	$TICK_WATCHER->start;
1034	},	2547	},
1035	);	2548	);
1036		2549
		2550	{
		2551	BDB::max_poll_time $TICK * 0.1;
		2552	$BDB_POLL_WATCHER = Event->io (
		2553	reentrant => 0,
		2554	fd => BDB::poll_fileno,
		2555	poll => 'r',
		2556	prio => 0,
		2557	data => WF_AUTOCANCEL,
		2558	cb => \&BDB::poll_cb,
		2559	);
		2560	BDB::min_parallel 8;
		2561
		2562	BDB::set_sync_prepare {
		2563	my $status;
		2564	my $current = $Coro::current;
		2565	(
		2566	sub {
		2567	$status = $!;
		2568	$current->ready; undef $current;
		2569	},
		2570	sub {
		2571	Coro::schedule while defined $current;
		2572	$! = $status;
		2573	},
		2574	)
		2575	};
		2576
		2577	unless ($DB_ENV) {
		2578	$DB_ENV = BDB::db_env_create;
		2579
		2580	cf::sync_job {
		2581	eval {
		2582	BDB::db_env_open
		2583	$DB_ENV,
		2584	$BDB_ENV_DIR,
		2585	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2586	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2587	0666;
		2588
		2589	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2590
		2591	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2592	$DB_ENV->set_lk_detect;
		2593	};
		2594
		2595	cf::cleanup "db_env_open(db): $@" if $@;
		2596	};
		2597	}
		2598	}
		2599
		2600	{
		2601	IO::AIO::min_parallel 8;
		2602
		2603	undef $Coro::AIO::WATCHER;
		2604	IO::AIO::max_poll_time $TICK * 0.1;
		2605	$AIO_POLL_WATCHER = Event->io (
		2606	reentrant => 0,
		2607	data => WF_AUTOCANCEL,
		2608	fd => IO::AIO::poll_fileno,
		2609	poll => 'r',
		2610	prio => 6,
		2611	cb => \&IO::AIO::poll_cb,
		2612	);
		2613	}
		2614
		2615	END { cf::emergency_save }
		2616
1037	1	2617	1
1038		2618

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