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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.59 by root, Wed Aug 30 16:30:37 2006 UTC vs.
Revision 1.216 by root, Thu Feb 15 14:30:21 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	_reload_1;	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 %PROP_TYPE;	49	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		50
24	our $TICK = MAX_TIME * 1e-6;	51	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	52	our $TICK_WATCHER;
		53	our $AIO_POLL_WATCHER;
		54	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	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
27		143
28	BEGIN {	144	BEGIN {
29	*CORE::GLOBAL::warn = sub {	145	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	146	my $msg = join "", @_;
		147	utf8::encode $msg;
		148
31	$msg .= "\n"	149	$msg .= "\n"
32	unless $msg =~ /\n$/;	150	unless $msg =~ /\n$/;
33		151
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	152	LOG llevError, $msg;
36	};	153	};
37	}	154	}
38		155
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	156	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		157	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	158	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	159	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	160	@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';	161	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		162
75	# 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
76	# within the Safe compartment.	164	# 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)) {	165	for my $pkg (qw(
		166	cf::global cf::attachable
		167	cf::object cf::object::player
		168	cf::client cf::player
		169	cf::arch cf::living
		170	cf::map cf::party cf::region
		171	)) {
78	no strict 'refs';	172	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	173	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	174	}
81		175
82	$Event::DIED = sub {	176	$Event::DIED = sub {
83	warn "error in event callback: @_";	177	warn "error in event callback: @_";
84	};	178	};
85		179
86	my %ext_pkg;	180	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		181
92	#############################################################################	182	=over 4
93	# 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	}
94		206
95	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 $json
		210
		211	Converts a JSON string into the corresponding perl data structure.
		212
		213	=cut
96		214
97	sub from_json($) {	215	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	216	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	217	JSON::Syck::Load $_[0]
100	}	218	}
101		219
		220	=item $json = cf::to_json $ref
		221
		222	Converts a perl data structure into its JSON representation.
		223
		224	=cut
		225
102	sub to_json($) {	226	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	227	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	228	JSON::Syck::Dump $_[0]
105	}	229	}
106		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 $runtime = cf::localdir . "/runtime";
		360
		361	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		362	or return;
		363
		364	my $value = $cf::RUNTIME + 90 + 10;
		365	# 10 is the runtime save interval, for a monotonic clock
		366	# 60 allows for the watchdog to kill the server.
		367
		368	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		369	and return;
		370
		371	# always fsync - this file is important
		372	aio_fsync $fh
		373	and return;
		374
		375	close $fh
		376	or return;
		377
		378	aio_rename "$runtime~", $runtime
		379	and return;
		380
		381	1
		382	}
		383
		384	=back
		385
		386	=cut
		387
107	#############################################################################	388	#############################################################################
108	# "new" plug-in system
109		389
110	=head3 EVENTS AND OBJECT ATTACHMENTS	390	=head2 ATTACHABLE OBJECTS
		391
		392	Many objects in crossfire are so-called attachable objects. That means you can
		393	attach callbacks/event handlers (a collection of which is called an "attachment")
		394	to it. All such attachable objects support the following methods.
		395
		396	In the following description, CLASS can be any of C<global>, C<object>
		397	C<player>, C<client> or C<map> (i.e. the attachable objects in
		398	crossfire+).
111		399
112	=over 4	400	=over 4
113		401
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...)	402	=item $attachable->attach ($attachment, key => $value...)
127		403
128	=item $map->detach ($attachment)	404	=item $attachable->detach ($attachment)
129		405
130	Attach/detach a pre-registered attachment to a map.	406	Attach/detach a pre-registered attachment to a specific object and give it
		407	the specified key/value pairs as arguments.
131		408
132	=item $bool = $object->attached ($name)	409	Example, attach a minesweeper attachment to the given object, making it a
		410	10x10 minesweeper game:
133		411
134	=item $bool = $player->attached ($name)	412	$obj->attach (minesweeper => width => 10, height => 10);
135		413
136	=item $bool = $map->attached ($name)	414	=item $bool = $attachable->attached ($name)
137		415
138	Checks wether the named attachment is currently attached to the object.	416	Checks wether the named attachment is currently attached to the object.
139		417
140	=item cf::attach_global ...	418	=item cf::CLASS->attach ...
141		419
142	Attach handlers for global events.	420	=item cf::CLASS->detach ...
143		421
144	This and all following C<attach_*>-functions expect any number of the	422	Define an anonymous attachment and attach it to all objects of the given
145	following handler/hook descriptions:	423	CLASS. See the next function for an explanation of its arguments.
		424
		425	You can attach to global events by using the C<cf::global> class.
		426
		427	Example, log all player logins:
		428
		429	cf::player->attach (
		430	on_login => sub {
		431	my ($pl) = @_;
		432	...
		433	},
		434	);
		435
		436	Example, attach to the jeweler skill:
		437
		438	cf::object->attach (
		439	type => cf::SKILL,
		440	subtype => cf::SK_JEWELER,
		441	on_use_skill => sub {
		442	my ($sk, $ob, $part, $dir, $msg) = @_;
		443	...
		444	},
		445	);
		446
		447	=item cf::CLASS::attachment $name, ...
		448
		449	Register an attachment by C<$name> through which attachable objects of the
		450	given CLASS can refer to this attachment.
		451
		452	Some classes such as crossfire maps and objects can specify attachments
		453	that are attached at load/instantiate time, thus the need for a name.
		454
		455	These calls expect any number of the following handler/hook descriptions:
146		456
147	=over 4	457	=over 4
148		458
149	=item prio => $number	459	=item prio => $number
150		460
…		…
152	by another C<prio> setting). Lower priority handlers get executed	462	by another C<prio> setting). Lower priority handlers get executed
153	earlier. The default priority is C<0>, and many built-in handlers are	463	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	464	registered at priority C<-1000>, so lower priorities should not be used
155	unless you know what you are doing.	465	unless you know what you are doing.
156		466
		467	=item type => $type
		468
		469	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		470	given type of objects only (the additional parameter C<subtype> can be
		471	used to further limit to the given subtype).
		472
157	=item on_I<event> => \&cb	473	=item on_I<event> => \&cb
158		474
159	Call the given code reference whenever the named event happens (event is	475	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	476	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	477	handlers are recognised generally depends on the type of object these
…		…
170	package and register them. Only handlers for eevents supported by the	486	package and register them. Only handlers for eevents supported by the
171	object/class are recognised.	487	object/class are recognised.
172		488
173	=back	489	=back
174		490
175	=item cf::attach_to_type $object_type, $subtype, ...	491	Example, define an attachment called "sockpuppet" that calls the given
		492	event handler when a monster attacks:
176		493
177	Attach handlers for a specific object type (e.g. TRANSPORT) and	494	cf::object::attachment sockpuppet =>
178	subtype. If C<$subtype> is zero or undef, matches all objects of the given	495	on_skill_attack => sub {
179	type.	496	my ($self, $victim) = @_;
180		497	...
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	}	498	}
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	499	}
402	}
403		500
404	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	501	=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		502
430	Just because you have a perl object does not mean that the corresponding	503	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	504	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	505	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	506	can be used to test for existence of the C object part without causing an
434	exception.	507	exception.
435		508
		509	=cut
		510
		511	# the following variables are defined in .xs and must not be re-created
		512	our @CB_GLOBAL = (); # registry for all global events
		513	our @CB_ATTACHABLE = (); # registry for all attachables
		514	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		515	our @CB_PLAYER = ();
		516	our @CB_CLIENT = ();
		517	our @CB_TYPE = (); # registry for type (cf-object class) based events
		518	our @CB_MAP = ();
		519
		520	my %attachment;
		521
		522	sub cf::attachable::thawer_merge {
		523	# simply override everything except _meta
		524	local $_[0]{_meta};
		525	%{$_[0]} = %{$_[1]};
		526	}
		527
		528	sub _attach_cb($$$$) {
		529	my ($registry, $event, $prio, $cb) = @_;
		530
		531	use sort 'stable';
		532
		533	$cb = [$prio, $cb];
		534
		535	@{$registry->[$event]} = sort
		536	{ $a->[0] cmp $b->[0] }
		537	@{$registry->[$event] || []}, $cb;
		538	}
		539
		540	# hack
		541	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		542
		543	# attach handles attaching event callbacks
		544	# the only thing the caller has to do is pass the correct
		545	# registry (== where the callback attaches to).
		546	sub _attach {
		547	my ($registry, $klass, @arg) = @_;
		548
		549	my $object_type;
		550	my $prio = 0;
		551	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		552
		553	#TODO: get rid of this hack
		554	if ($attachable_klass{$klass}) {
		555	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		556	}
		557
		558	while (@arg) {
		559	my $type = shift @arg;
		560
		561	if ($type eq "prio") {
		562	$prio = shift @arg;
		563
		564	} elsif ($type eq "type") {
		565	$object_type = shift @arg;
		566	$registry = $CB_TYPE[$object_type] ||= [];
		567
		568	} elsif ($type eq "subtype") {
		569	defined $object_type or Carp::croak "subtype specified without type";
		570	my $object_subtype = shift @arg;
		571	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		572
		573	} elsif ($type eq "package") {
		574	my $pkg = shift @arg;
		575
		576	while (my ($name, $id) = each %cb_id) {
		577	if (my $cb = $pkg->can ($name)) {
		578	_attach_cb $registry, $id, $prio, $cb;
		579	}
		580	}
		581
		582	} elsif (exists $cb_id{$type}) {
		583	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		584
		585	} elsif (ref $type) {
		586	warn "attaching objects not supported, ignoring.\n";
		587
		588	} else {
		589	shift @arg;
		590	warn "attach argument '$type' not supported, ignoring.\n";
		591	}
		592	}
		593	}
		594
		595	sub _object_attach {
		596	my ($obj, $name, %arg) = @_;
		597
		598	return if exists $obj->{_attachment}{$name};
		599
		600	if (my $attach = $attachment{$name}) {
		601	my $registry = $obj->registry;
		602
		603	for (@$attach) {
		604	my ($klass, @attach) = @$_;
		605	_attach $registry, $klass, @attach;
		606	}
		607
		608	$obj->{$name} = \%arg;
		609	} else {
		610	warn "object uses attachment '$name' that is not available, postponing.\n";
		611	}
		612
		613	$obj->{_attachment}{$name} = undef;
		614	}
		615
		616	sub cf::attachable::attach {
		617	if (ref $_[0]) {
		618	_object_attach @_;
		619	} else {
		620	_attach shift->_attach_registry, @_;
		621	}
		622	};
		623
		624	# all those should be optimised
		625	sub cf::attachable::detach {
		626	my ($obj, $name) = @_;
		627
		628	if (ref $obj) {
		629	delete $obj->{_attachment}{$name};
		630	reattach ($obj);
		631	} else {
		632	Carp::croak "cannot, currently, detach class attachments";
		633	}
		634	};
		635
		636	sub cf::attachable::attached {
		637	my ($obj, $name) = @_;
		638
		639	exists $obj->{_attachment}{$name}
		640	}
		641
		642	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		643	eval "#line " . __LINE__ . " 'cf.pm'
		644	sub cf::\L$klass\E::_attach_registry {
		645	(\\\@CB_$klass, KLASS_$klass)
		646	}
		647
		648	sub cf::\L$klass\E::attachment {
		649	my \$name = shift;
		650
		651	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		652	}
		653	";
		654	die if $@;
		655	}
		656
		657	our $override;
		658	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		659
		660	sub override {
		661	$override = 1;
		662	@invoke_results = ();
		663	}
		664
		665	sub do_invoke {
		666	my $event = shift;
		667	my $callbacks = shift;
		668
		669	@invoke_results = ();
		670
		671	local $override;
		672
		673	for (@$callbacks) {
		674	eval { &{$_->[1]} };
		675
		676	if ($@) {
		677	warn "$@";
		678	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		679	override;
		680	}
		681
		682	return 1 if $override;
		683	}
		684
		685	0
		686	}
		687
		688	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		689
		690	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		691
		692	Generate an object-specific event with the given arguments.
		693
		694	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		695	removed in future versions), and there is no public API to access override
		696	results (if you must, access C<@cf::invoke_results> directly).
		697
436	=back	698	=back
437		699
438	=cut	700	=cut
439
440	*cf::object::valid =
441	*cf::player::valid =
442	*cf::map::valid = \&cf::_valid;
443		701
444	#############################################################################	702	#############################################################################
445	# object support	703	# object support
446		704
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 {	705	sub reattach {
		706	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	707	my ($obj) = @_;
		708
		709	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		710
462	my $registry = $obj->registry;	711	my $registry = $obj->registry;
463		712
464	@$registry = ();	713	@$registry = ();
465		714
466	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	715	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
467		716
468	for my $name (keys %{ $obj->{_attachment} || {} }) {	717	for my $name (keys %{ $obj->{_attachment} || {} }) {
469	if (my $attach = $attachment{$name}) {	718	if (my $attach = $attachment{$name}) {
470	for (@$attach) {	719	for (@$attach) {
471	my ($klass, @attach) = @$_;	720	my ($klass, @attach) = @$_;
472	_attach @$registry, $klass, @attach;	721	_attach $registry, $klass, @attach;
473	}	722	}
474	} else {	723	} else {
475	warn "object uses attachment '$name' that is not available, postponing.\n";	724	warn "object uses attachment '$name' that is not available, postponing.\n";
476	}	725	}
477	}	726	}
478	}	727	}
479		728
480	sub object_freezer_save {	729	cf::attachable->attach (
481	my ($filename, $rdata, $objs) = @_;
482
483	if (open my $fh, ">:raw", "$filename~") {
484	chmod SAVE_MODE, $fh;
485	syswrite $fh, $$rdata;
486	close $fh;
487
488	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
489	chmod SAVE_MODE, $fh;
490	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
491	close $fh;
492	rename "$filename.pst~", "$filename.pst";
493	} else {
494	unlink "$filename.pst";
495	}
496
497	rename "$filename~", $filename;
498	} else {
499	warn "FATAL: $filename~: $!\n";
500	}
501	}
502
503	sub object_thawer_load {
504	my ($filename) = @_;
505
506	open my $fh, "<:raw:perlio", "$filename.pst"
507	or return;
508
509	eval { local $/; (Storable::thaw <$fh>)->{objs} }
510	}
511
512	attach_to_objects
513	prio => -1000000,	730	prio => -1000000,
		731	on_instantiate => sub {
		732	my ($obj, $data) = @_;
		733
		734	$data = from_json $data;
		735
		736	for (@$data) {
		737	my ($name, $args) = @$_;
		738
		739	$obj->attach ($name, %{$args || {} });
		740	}
		741	},
		742	on_reattach => \&reattach,
514	on_clone => sub {	743	on_clone => sub {
515	my ($src, $dst) = @_;	744	my ($src, $dst) = @_;
516		745
517	@{$dst->registry} = @{$src->registry};	746	@{$dst->registry} = @{$src->registry};
518		747
519	%$dst = %$src;	748	%$dst = %$src;
520		749
521	%{$dst->{_attachment}} = %{$src->{_attachment}}	750	%{$dst->{_attachment}} = %{$src->{_attachment}}
522	if exists $src->{_attachment};	751	if exists $src->{_attachment};
523	},	752	},
524	;	753	);
		754
		755	sub object_freezer_save {
		756	my ($filename, $rdata, $objs) = @_;
		757
		758	sync_job {
		759	if (length $$rdata) {
		760	warn sprintf "saving %s (%d,%d)\n",
		761	$filename, length $$rdata, scalar @$objs;
		762
		763	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		764	chmod SAVE_MODE, $fh;
		765	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		766	aio_fsync $fh if $cf::USE_FSYNC;
		767	close $fh;
		768
		769	if (@$objs) {
		770	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		771	chmod SAVE_MODE, $fh;
		772	my $data = Storable::nfreeze { version => 1, objs => $objs };
		773	aio_write $fh, 0, (length $data), $data, 0;
		774	aio_fsync $fh if $cf::USE_FSYNC;
		775	close $fh;
		776	aio_rename "$filename.pst~", "$filename.pst";
		777	}
		778	} else {
		779	aio_unlink "$filename.pst";
		780	}
		781
		782	aio_rename "$filename~", $filename;
		783	} else {
		784	warn "FATAL: $filename~: $!\n";
		785	}
		786	} else {
		787	aio_unlink $filename;
		788	aio_unlink "$filename.pst";
		789	}
		790	}
		791	}
		792
		793	sub object_freezer_as_string {
		794	my ($rdata, $objs) = @_;
		795
		796	use Data::Dumper;
		797
		798	$$rdata . Dumper $objs
		799	}
		800
		801	sub object_thawer_load {
		802	my ($filename) = @_;
		803
		804	my ($data, $av);
		805
		806	(aio_load $filename, $data) >= 0
		807	or return;
		808
		809	unless (aio_stat "$filename.pst") {
		810	(aio_load "$filename.pst", $av) >= 0
		811	or return;
		812	$av = eval { (Storable::thaw $av)->{objs} };
		813	}
		814
		815	warn sprintf "loading %s (%d)\n",
		816	$filename, length $data, scalar @{$av || []};#d#
		817	return ($data, $av);
		818	}
525		819
526	#############################################################################	820	#############################################################################
527	# old plug-in events	821	# command handling &c
528		822
529	sub inject_event {	823	=item cf::register_command $name => \&callback($ob,$args);
530	my $extension = shift;
531	my $event_code = shift;
532		824
533	my $cb = $hook[$event_code]{$extension}	825	Register a callback for execution when the client sends the user command
534	or return;	826	$name.
535		827
536	&$cb	828	=cut
537	}
538
539	sub inject_global_event {
540	my $event = shift;
541
542	my $cb = $hook[$event]
543	or return;
544
545	List::Util::max map &$_, values %$cb
546	}
547
548	sub inject_command {
549	my ($name, $obj, $params) = @_;
550
551	for my $cmd (@{ $command{$name} }) {
552	$cmd->[1]->($obj, $params);
553	}
554
555	-1
556	}
557		829
558	sub register_command {	830	sub register_command {
559	my ($name, $time, $cb) = @_;	831	my ($name, $cb) = @_;
560		832
561	my $caller = caller;	833	my $caller = caller;
562	#warn "registering command '$name/$time' to '$caller'";	834	#warn "registering command '$name/$time' to '$caller'";
563		835
564	push @{ $command{$name} }, [$time, $cb, $caller];	836	push @{ $COMMAND{$name} }, [$caller, $cb];
565	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
566	}	837	}
		838
		839	=item cf::register_extcmd $name => \&callback($pl,$packet);
		840
		841	Register a callbackf ro execution when the client sends an extcmd packet.
		842
		843	If the callback returns something, it is sent back as if reply was being
		844	called.
		845
		846	=cut
567		847
568	sub register_extcmd {	848	sub register_extcmd {
569	my ($name, $cb) = @_;	849	my ($name, $cb) = @_;
570		850
571	my $caller = caller;	851	$EXTCMD{$name} = $cb;
572	#warn "registering extcmd '$name' to '$caller'";
573
574	$extcmd{$name} = [$cb, $caller];
575	}	852	}
576		853
577	sub register {	854	cf::player->attach (
578	my ($base, $pkg) = @_;	855	on_command => sub {
		856	my ($pl, $name, $params) = @_;
579		857
580	#TODO	858	my $cb = $COMMAND{$name}
581	}	859	or return;
		860
		861	for my $cmd (@$cb) {
		862	$cmd->[1]->($pl->ob, $params);
		863	}
		864
		865	cf::override;
		866	},
		867	on_extcmd => sub {
		868	my ($pl, $buf) = @_;
		869
		870	my $msg = eval { from_json $buf };
		871
		872	if (ref $msg) {
		873	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		874	if (my %reply = $cb->($pl, $msg)) {
		875	$pl->ext_reply ($msg->{msgid}, %reply);
		876	}
		877	}
		878	} else {
		879	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		880	}
		881
		882	cf::override;
		883	},
		884	);
582		885
583	sub load_extension {	886	sub load_extension {
584	my ($path) = @_;	887	my ($path) = @_;
585		888
586	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	889	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
587	my $base = $1;	890	my $base = $1;
588	my $pkg = $1;	891	my $pkg = $1;
589	$pkg =~ s/[^[:word:]]/_/g;	892	$pkg =~ s/[^[:word:]]/_/g;
590	$pkg = "ext::$pkg";	893	$pkg = "ext::$pkg";
591		894
592	warn "loading '$path' into '$pkg'\n";	895	warn "... loading '$path' into '$pkg'\n";
593		896
594	open my $fh, "<:utf8", $path	897	open my $fh, "<:utf8", $path
595	or die "$path: $!";	898	or die "$path: $!";
596		899
597	my $source =	900	my $source =
598	"package $pkg; use strict; use utf8;\n"	901	"package $pkg; use strict; use utf8;\n"
599	. "#line 1 \"$path\"\n{\n"	902	. "#line 1 \"$path\"\n{\n"
600	. (do { local $/; <$fh> })	903	. (do { local $/; <$fh> })
601	. "\n};\n1";	904	. "\n};\n1";
602		905
603	eval $source	906	unless (eval $source) {
604	or die "$path: $@";	907	my $msg = $@ ? "$path: $@\n"
605		908	: "extension disabled.\n";
606	push @exts, $pkg;	909	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
607	$ext_pkg{$base} = $pkg;	910	warn $@;
608		911	warn "mandatory extension failed to load, exiting.\n";
609	# no strict 'refs';	912	exit 1;
610	# @{"$pkg\::ISA"} = ext::;	913	}
611		914	die $@;
612	register $base, $pkg;
613	}
614
615	sub unload_extension {
616	my ($pkg) = @_;
617
618	warn "removing extension $pkg\n";
619
620	# remove hooks
621	#TODO
622	# for my $idx (0 .. $#PLUGIN_EVENT) {
623	# delete $hook[$idx]{$pkg};
624	# }	915	}
625		916
626	# remove commands	917	push @EXTS, $pkg;
627	for my $name (keys %command) {
628	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
629
630	if (@cb) {
631	$command{$name} = \@cb;
632	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
633	} else {
634	delete $command{$name};
635	delete $COMMAND{"$name\000"};
636	}
637	}
638
639	# remove extcmds
640	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
641	delete $extcmd{$name};
642	}
643
644	if (my $cb = $pkg->can ("unload")) {
645	eval {
646	$cb->($pkg);
647	1
648	} or warn "$pkg unloaded, but with errors: $@";
649	}
650
651	Symbol::delete_package $pkg;
652	}	918	}
653		919
654	sub load_extensions {	920	sub load_extensions {
655	my $LIBDIR = maps_directory "perl";
656
657	for my $ext (<$LIBDIR/*.ext>) {	921	for my $ext (<$LIBDIR/*.ext>) {
658	next unless -r $ext;	922	next unless -r $ext;
659	eval {	923	eval {
660	load_extension $ext;	924	load_extension $ext;
661	1	925	1
662	} or warn "$ext not loaded: $@";	926	} or warn "$ext not loaded: $@";
663	}	927	}
664	}	928	}
665		929
666	sub _perl_reload(&) {	930	#############################################################################
		931
		932	=head2 CORE EXTENSIONS
		933
		934	Functions and methods that extend core crossfire objects.
		935
		936	=cut
		937
		938	package cf::player;
		939
		940	use Coro::AIO;
		941
		942	=head3 cf::player
		943
		944	=over 4
		945
		946	=item cf::player::find $login
		947
		948	Returns the given player object, loading it if necessary (might block).
		949
		950	=cut
		951
		952	sub playerdir($) {
		953	cf::localdir
		954	. "/"
		955	. cf::playerdir
		956	. "/"
		957	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		958	}
		959
		960	sub path($) {
		961	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		962
		963	(playerdir $login) . "/$login.pl"
		964	}
		965
		966	sub find_active($) {
		967	$cf::PLAYER{$_[0]}
		968	and $cf::PLAYER{$_[0]}->active
		969	and $cf::PLAYER{$_[0]}
		970	}
		971
		972	sub exists($) {
		973	my ($login) = @_;
		974
		975	$cf::PLAYER{$login}
		976	or cf::sync_job { !aio_stat path $login }
		977	}
		978
		979	sub find($) {
		980	return $cf::PLAYER{$_[0]} || do {
		981	my $login = $_[0];
		982
		983	my $guard = cf::lock_acquire "user_find:$login";
		984
		985	$cf::PLAYER{$_[0]} || do {
		986	my $pl = load_pl path $login
		987	or return;
		988	$cf::PLAYER{$login} = $pl
		989	}
		990	}
		991	}
		992
		993	sub save($) {
		994	my ($pl) = @_;
		995
		996	return if $pl->{deny_save};
		997
		998	my $path = path $pl;
		999	my $guard = cf::lock_acquire "user_save:$path";
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	aio_mkdir playerdir $pl, 0770;
		1004	$pl->{last_save} = $cf::RUNTIME;
		1005
		1006	$pl->save_pl ($path);
		1007	Coro::cede;
		1008	}
		1009
		1010	sub new($) {
		1011	my ($login) = @_;
		1012
		1013	my $self = create;
		1014
		1015	$self->ob->name ($login);
		1016	$self->{deny_save} = 1;
		1017
		1018	$cf::PLAYER{$login} = $self;
		1019
		1020	$self
		1021	}
		1022
		1023	=item $pl->quit_character
		1024
		1025	Nukes the player without looking back. If logged in, the connection will
		1026	be destroyed. May block for a long time.
		1027
		1028	=cut
		1029
		1030	sub quit_character {
		1031	my ($pl) = @_;
		1032
		1033	$pl->{deny_save} = 1;
		1034	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1035
		1036	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1037	$pl->deactivate;
		1038	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1039	$pl->ns->destroy if $pl->ns;
		1040
		1041	my $path = playerdir $pl;
		1042	my $temp = "$path~$cf::RUNTIME~deleting~";
		1043	aio_rename $path, $temp;
		1044	delete $cf::PLAYER{$pl->ob->name};
		1045	$pl->destroy;
		1046	IO::AIO::aio_rmtree $temp;
		1047	}
		1048
		1049	=item cf::player::list_logins
		1050
		1051	Returns am arrayref of all valid playernames in the system, can take a
		1052	while and may block, so not sync_job-capable, ever.
		1053
		1054	=cut
		1055
		1056	sub list_logins {
		1057	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1058	or return [];
		1059
		1060	my @logins;
		1061
		1062	for my $login (@$dirs) {
		1063	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1064	aio_read $fh, 0, 512, my $buf, 0 or next;
		1065	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1066
		1067	utf8::decode $login;
		1068	push @logins, $login;
		1069	}
		1070
		1071	\@logins
		1072	}
		1073
		1074	=item $player->maps
		1075
		1076	Returns an arrayref of map paths that are private for this
		1077	player. May block.
		1078
		1079	=cut
		1080
		1081	sub maps($) {
		1082	my ($pl) = @_;
		1083
		1084	$pl = ref $pl ? $pl->ob->name : $pl;
		1085
		1086	my $files = aio_readdir playerdir $pl
		1087	or return;
		1088
		1089	my @paths;
		1090
		1091	for (@$files) {
		1092	utf8::decode $_;
		1093	next if /\.(?:pl|pst)$/;
		1094	next unless /^$PATH_SEP/o;
		1095
		1096	push @paths, cf::map::normalise "~$pl/$_";
		1097	}
		1098
		1099	\@paths
		1100	}
		1101
		1102	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1103
		1104	Sends an ext reply to the player.
		1105
		1106	=cut
		1107
		1108	sub ext_reply($$$%) {
		1109	my ($self, $id, %msg) = @_;
		1110
		1111	$msg{msgid} = $id;
		1112
		1113	$self->send ("ext " . cf::to_json \%msg);
		1114	}
		1115
		1116	package cf;
		1117
		1118	=back
		1119
		1120
		1121	=head3 cf::map
		1122
		1123	=over 4
		1124
		1125	=cut
		1126
		1127	package cf::map;
		1128
		1129	use Fcntl;
		1130	use Coro::AIO;
		1131
		1132	use overload
		1133	'""' => \&as_string,
		1134	fallback => 1;
		1135
		1136	our $MAX_RESET = 3600;
		1137	our $DEFAULT_RESET = 3000;
		1138
		1139	sub generate_random_map {
		1140	my ($self, $rmp) = @_;
		1141	# mit "rum" bekleckern, nicht
		1142	$self->_create_random_map (
		1143	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1144	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1145	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1146	$rmp->{exit_on_final_map},
		1147	$rmp->{xsize}, $rmp->{ysize},
		1148	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1149	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1150	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1151	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1152	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1153	(cf::region::find $rmp->{region}), $rmp->{custom}
		1154	)
		1155	}
		1156
		1157	=item cf::map->register ($regex, $prio)
		1158
		1159	Register a handler for the map path matching the given regex at the
		1160	givne priority (higher is better, built-in handlers have priority 0, the
		1161	default).
		1162
		1163	=cut
		1164
		1165	sub register {
		1166	my (undef, $regex, $prio) = @_;
		1167	my $pkg = caller;
		1168
		1169	no strict;
		1170	push @{"$pkg\::ISA"}, __PACKAGE__;
		1171
		1172	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1173	}
		1174
		1175	# also paths starting with '/'
		1176	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1177
		1178	sub thawer_merge {
		1179	my ($self, $merge) = @_;
		1180
		1181	# we have to keep some variables in memory intact
		1182	local $self->{path};
		1183	local $self->{load_path};
		1184	local $self->{deny_save};
		1185	local $self->{deny_reset};
		1186
		1187	$self->SUPER::thawer_merge ($merge);
		1188	}
		1189
		1190	sub normalise {
		1191	my ($path, $base) = @_;
		1192
		1193	$path = "$path"; # make sure its a string
		1194
		1195	$path =~ s/\.map$//;
		1196
		1197	# map plan:
		1198	#
		1199	# /! non-realised random map exit (special hack!)
		1200	# {... are special paths that are not being touched
		1201	# ?xxx/... are special absolute paths
		1202	# ?random/... random maps
		1203	# /... normal maps
		1204	# ~user/... per-player map of a specific user
		1205
		1206	$path =~ s/$PATH_SEP/\//go;
		1207
		1208	# treat it as relative path if it starts with
		1209	# something that looks reasonable
		1210	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1211	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1212
		1213	$base =~ s{[^/]+/?$}{};
		1214	$path = "$base/$path";
		1215	}
		1216
		1217	for ($path) {
		1218	redo if s{//}{/};
		1219	redo if s{/\.?/}{/};
		1220	redo if s{/[^/]+/\.\./}{/};
		1221	}
		1222
		1223	$path
		1224	}
		1225
		1226	sub new_from_path {
		1227	my (undef, $path, $base) = @_;
		1228
		1229	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1230
		1231	$path = normalise $path, $base;
		1232
		1233	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1234	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1235	my $self = bless cf::map::new, $pkg;
		1236	$self->{path} = $path; $self->path ($path);
		1237	$self->init; # pass $1 etc.
		1238	return $self;
		1239	}
		1240	}
		1241
		1242	Carp::carp "unable to resolve path '$path' (base '$base').";
		1243	()
		1244	}
		1245
		1246	sub init {
		1247	my ($self) = @_;
		1248
		1249	$self
		1250	}
		1251
		1252	sub as_string {
		1253	my ($self) = @_;
		1254
		1255	"$self->{path}"
		1256	}
		1257
		1258	# the displayed name, this is a one way mapping
		1259	sub visible_name {
		1260	&as_string
		1261	}
		1262
		1263	# the original (read-only) location
		1264	sub load_path {
		1265	my ($self) = @_;
		1266
		1267	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1268	}
		1269
		1270	# the temporary/swap location
		1271	sub save_path {
		1272	my ($self) = @_;
		1273
		1274	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1275	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1276	}
		1277
		1278	# the unique path, undef == no special unique path
		1279	sub uniq_path {
		1280	my ($self) = @_;
		1281
		1282	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1283	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1284	}
		1285
		1286	# and all this just because we cannot iterate over
		1287	# all maps in C++...
		1288	sub change_all_map_light {
		1289	my ($change) = @_;
		1290
		1291	$_->change_map_light ($change)
		1292	for grep $_->outdoor, values %cf::MAP;
		1293	}
		1294
		1295	sub unlink_save {
		1296	my ($self) = @_;
		1297
		1298	utf8::encode (my $save = $self->save_path);
		1299	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1300	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1301	}
		1302
		1303	sub load_header_from($) {
		1304	my ($self, $path) = @_;
		1305
		1306	utf8::encode $path;
		1307	#aio_open $path, O_RDONLY, 0
		1308	# or return;
		1309
		1310	$self->_load_header ($path)
		1311	or return;
		1312
		1313	$self->{load_path} = $path;
		1314
		1315	1
		1316	}
		1317
		1318	sub load_header_orig {
		1319	my ($self) = @_;
		1320
		1321	$self->load_header_from ($self->load_path)
		1322	}
		1323
		1324	sub load_header_temp {
		1325	my ($self) = @_;
		1326
		1327	$self->load_header_from ($self->save_path)
		1328	}
		1329
		1330	sub prepare_temp {
		1331	my ($self) = @_;
		1332
		1333	$self->last_access ((delete $self->{last_access})
		1334	|| $cf::RUNTIME); #d#
		1335	# safety
		1336	$self->{instantiate_time} = $cf::RUNTIME
		1337	if $self->{instantiate_time} > $cf::RUNTIME;
		1338	}
		1339
		1340	sub prepare_orig {
		1341	my ($self) = @_;
		1342
		1343	$self->{load_original} = 1;
		1344	$self->{instantiate_time} = $cf::RUNTIME;
		1345	$self->last_access ($cf::RUNTIME);
		1346	$self->instantiate;
		1347	}
		1348
		1349	sub load_header {
		1350	my ($self) = @_;
		1351
		1352	if ($self->load_header_temp) {
		1353	$self->prepare_temp;
		1354	} else {
		1355	$self->load_header_orig
		1356	or return;
		1357	$self->prepare_orig;
		1358	}
		1359
		1360	1
		1361	}
		1362
		1363	sub find;
		1364	sub find {
		1365	my ($path, $origin) = @_;
		1366
		1367	$path = normalise $path, $origin && $origin->path;
		1368
		1369	cf::lock_wait "map_find:$path";
		1370
		1371	$cf::MAP{$path} || do {
		1372	my $guard = cf::lock_acquire "map_find:$path";
		1373	my $map = new_from_path cf::map $path
		1374	or return;
		1375
		1376	$map->{last_save} = $cf::RUNTIME;
		1377
		1378	$map->load_header
		1379	or return;
		1380
		1381	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1382	# doing this can freeze the server in a sync job, obviously
		1383	#$cf::WAIT_FOR_TICK->wait;
		1384	$map->reset;
		1385	undef $guard;
		1386	return find $path;
		1387	}
		1388
		1389	$cf::MAP{$path} = $map
		1390	}
		1391	}
		1392
		1393	sub pre_load { }
		1394	sub post_load { }
		1395
		1396	sub load {
		1397	my ($self) = @_;
		1398
		1399	local $self->{deny_reset} = 1; # loading can take a long time
		1400
		1401	my $path = $self->{path};
		1402	my $guard = cf::lock_acquire "map_load:$path";
		1403
		1404	return if $self->in_memory != cf::MAP_SWAPPED;
		1405
		1406	$self->in_memory (cf::MAP_LOADING);
		1407
		1408	$self->alloc;
		1409
		1410	$self->pre_load;
		1411
		1412	$self->_load_objects ($self->{load_path}, 1)
		1413	or return;
		1414
		1415	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1416	if delete $self->{load_original};
		1417
		1418	if (my $uniq = $self->uniq_path) {
		1419	utf8::encode $uniq;
		1420	if (aio_open $uniq, O_RDONLY, 0) {
		1421	$self->clear_unique_items;
		1422	$self->_load_objects ($uniq, 0);
		1423	}
		1424	}
		1425
		1426	Coro::cede;
		1427
		1428	# now do the right thing for maps
		1429	$self->link_multipart_objects;
		1430
		1431	unless ($self->{deny_activate}) {
		1432	$self->decay_objects;
		1433	$self->fix_auto_apply;
		1434	$self->update_buttons;
		1435	Coro::cede;
		1436	$self->set_darkness_map;
		1437	$self->difficulty ($self->estimate_difficulty)
		1438	unless $self->difficulty;
		1439	Coro::cede;
		1440	$self->activate;
		1441	}
		1442
		1443	$self->post_load;
		1444
		1445	$self->in_memory (cf::MAP_IN_MEMORY);
		1446	}
		1447
		1448	sub customise_for {
		1449	my ($self, $ob) = @_;
		1450
		1451	return find "~" . $ob->name . "/" . $self->{path}
		1452	if $self->per_player;
		1453
		1454	$self
		1455	}
		1456
		1457	# find and load all maps in the 3x3 area around a map
		1458	sub load_diag {
667	my ($msg) = @_;	1459	my ($map) = @_;
668		1460
669	$msg->("reloading...");	1461	my @diag; # diagonal neighbours
670		1462
671	eval {	1463	for (0 .. 3) {
672	# 1. cancel all watchers	1464	my $neigh = $map->tile_path ($_)
673	$_->cancel for Event::all_watchers;	1465	or next;
		1466	$neigh = find $neigh, $map
		1467	or next;
		1468	$neigh->load;
674		1469
675	# 2. unload all extensions	1470	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
676	for (@exts) {	1471	[$neigh->tile_path (($_ + 1) % 4), $neigh];
677	$msg->("unloading <$_>");	1472	}
678	unload_extension $_;
679	}
680		1473
681	# 3. unload all modules loaded from $LIBDIR	1474	for (@diag) {
682	while (my ($k, $v) = each %INC) {	1475	my $neigh = find @$_
683	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1476	or next;
		1477	$neigh->load;
		1478	}
		1479	}
684		1480
685	$msg->("removing <$k>");	1481	sub find_sync {
686	delete $INC{$k};	1482	my ($path, $origin) = @_;
687		1483
688	$k =~ s/\.pm$//;	1484	cf::sync_job { find $path, $origin }
689	$k =~ s/\//::/g;	1485	}
690		1486
691	if (my $cb = $k->can ("unload_module")) {	1487	sub do_load_sync {
692	$cb->();	1488	my ($map) = @_;
		1489
		1490	cf::sync_job { $map->load };
		1491	}
		1492
		1493	our %MAP_PREFETCH;
		1494	our $MAP_PREFETCHER = undef;
		1495
		1496	sub find_async {
		1497	my ($path, $origin) = @_;
		1498
		1499	$path = normalise $path, $origin && $origin->{path};
		1500
		1501	if (my $map = $cf::MAP{$path}) {
		1502	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1503	}
		1504
		1505	undef $MAP_PREFETCH{$path};
		1506	$MAP_PREFETCHER ||= cf::async {
		1507	while (%MAP_PREFETCH) {
		1508	for my $path (keys %MAP_PREFETCH) {
		1509	my $map = find $path
		1510	or next;
		1511	$map->load;
		1512
		1513	delete $MAP_PREFETCH{$path};
693	}	1514	}
694
695	Symbol::delete_package $k;
696	}
697
698	# 4. get rid of safe::, as good as possible
699	Symbol::delete_package "safe::$_"
700	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
701
702	# 5. remove register_script_function callbacks
703	# TODO
704		1515	}
705	# 6. unload cf.pm "a bit"	1516	undef $MAP_PREFETCHER;
706	delete $INC{"cf.pm"};
707
708	# don't, removes xs symbols, too,
709	# and global variables created in xs
710	#Symbol::delete_package __PACKAGE__;
711
712	# 7. reload cf.pm
713	$msg->("reloading cf.pm");
714	require cf;
715	};	1517	};
716	$msg->($@) if $@;	1518	$MAP_PREFETCHER->prio (6);
717		1519
718	$msg->("reloaded");	1520	()
719	};	1521	}
720		1522
721	sub perl_reload() {	1523	sub save {
722	_perl_reload {	1524	my ($self) = @_;
723	warn $_[0];	1525
724	print "$_[0]\n";	1526	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1527
		1528	$self->{last_save} = $cf::RUNTIME;
		1529
		1530	return unless $self->dirty;
		1531
		1532	my $save = $self->save_path; utf8::encode $save;
		1533	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1534
		1535	$self->{load_path} = $save;
		1536
		1537	return if $self->{deny_save};
		1538
		1539	local $self->{last_access} = $self->last_access;#d#
		1540
		1541	cf::async {
		1542	$_->contr->save for $self->players;
725	};	1543	};
726	}
727		1544
728	register_command "perl-reload", 0, sub {	1545	if ($uniq) {
729	my ($who, $arg) = @_;	1546	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
730		1547	$self->_save_objects ($uniq, cf::IO_UNIQUES);
731	if ($who->flag (FLAG_WIZ)) {
732	_perl_reload {
733	warn $_[0];
734	$who->message ($_[0]);
735	};
736	}
737	};
738
739	#############################################################################
740	# extcmd framework, basically convert ext <msg>
741	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
742
743	attach_to_players
744	on_extcmd => sub {
745	my ($pl, $buf) = @_;
746
747	my $msg = eval { from_json $buf };
748
749	if (ref $msg) {
750	if (my $cb = $extcmd{$msg->{msgtype}}) {
751	if (my %reply = $cb->[0]->($pl, $msg)) {
752	$pl->ext_reply ($msg->{msgid}, %reply);
753	}
754	}
755	} else {	1548	} else {
756	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1549	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
757	}
758
759	cf::override;
760	},	1550	}
761	;	1551	}
762		1552
763	#############################################################################	1553	sub swap_out {
764	# load/save/clean perl data associated with a map
765
766	*cf::mapsupport::on_clean = sub {
767	my ($map) = @_;	1554	my ($self) = @_;
768		1555
769	my $path = $map->tmpname;	1556	# save first because save cedes
770	defined $path or return;	1557	$self->save;
771		1558
772	unlink "$path.pst";	1559	my $lock = cf::lock_acquire "map_data:" . $self->path;
773	};
774		1560
775	attach_to_maps prio => -10000, package => cf::mapsupport::;	1561	return if $self->players;
		1562	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1563	return if $self->{deny_save};
776		1564
777	#############################################################################	1565	$self->clear;
778	# load/save perl data associated with player->ob objects	1566	$self->in_memory (cf::MAP_SWAPPED);
779
780	sub all_objects(@) {
781	@_, map all_objects ($_->inv), @_
782	}	1567	}
783		1568
784	attach_to_players	1569	sub reset_at {
785	on_load => sub {	1570	my ($self) = @_;
786	my ($pl, $path) = @_;
787		1571
788	for my $o (all_objects $pl->ob) {	1572	# TODO: safety, remove and allow resettable per-player maps
789	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1573	return 1e99 if $self->isa ("ext::map_per_player");#d#
790	$o->set_ob_key_value ("_perl_data");	1574	return 1e99 if $self->{deny_reset};
791		1575
792	%$o = %{ Storable::thaw pack "H*", $value };	1576	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
793	}	1577	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
794	}	1578
		1579	$time + $to
		1580	}
		1581
		1582	sub should_reset {
		1583	my ($self) = @_;
		1584
		1585	$self->reset_at <= $cf::RUNTIME
		1586	}
		1587
		1588	sub reset {
		1589	my ($self) = @_;
		1590
		1591	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1592
		1593	return if $self->players;
		1594	return if $self->isa ("ext::map_per_player");#d#
		1595
		1596	warn "resetting map ", $self->path;#d#
		1597
		1598	$self->in_memory (cf::MAP_SWAPPED);
		1599
		1600	# need to save uniques path
		1601	unless ($self->{deny_save}) {
		1602	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1603
		1604	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1605	if $uniq;
795	},	1606	}
796	;
797		1607
798	#############################################################################	1608	delete $cf::MAP{$self->path};
799	# core extensions - in perl
800		1609
801	=item cf::player::exists $login	1610	$self->clear;
802		1611
803	Returns true when the given account exists.	1612	$_->clear_links_to ($self) for values %cf::MAP;
804		1613
805	=cut	1614	$self->unlink_save;
806		1615	$self->destroy;
807	sub cf::player::exists($) {
808	cf::player::find $_[0]
809	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
810	}	1616	}
811		1617
		1618	my $nuke_counter = "aaaa";
		1619
		1620	sub nuke {
		1621	my ($self) = @_;
		1622
		1623	delete $cf::MAP{$self->path};
		1624
		1625	$self->unlink_save;
		1626
		1627	bless $self, "cf::map";
		1628	delete $self->{deny_reset};
		1629	$self->{deny_save} = 1;
		1630	$self->reset_timeout (1);
		1631	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1632
		1633	$cf::MAP{$self->path} = $self;
		1634
		1635	$self->reset; # polite request, might not happen
		1636	}
		1637
		1638	=item cf::map::unique_maps
		1639
		1640	Returns an arrayref of paths of all shared maps that have
		1641	instantiated unique items. May block.
		1642
		1643	=cut
		1644
		1645	sub unique_maps() {
		1646	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1647	or return;
		1648
		1649	my @paths;
		1650
		1651	for (@$files) {
		1652	utf8::decode $_;
		1653	next if /\.pst$/;
		1654	next unless /^$PATH_SEP/o;
		1655
		1656	push @paths, cf::map::normalise $_;
		1657	}
		1658
		1659	\@paths
		1660	}
		1661
		1662	package cf;
		1663
		1664	=back
		1665
		1666	=head3 cf::object
		1667
		1668	=cut
		1669
		1670	package cf::object;
		1671
		1672	=over 4
		1673
		1674	=item $ob->inv_recursive
		1675
		1676	Returns the inventory of the object _and_ their inventories, recursively.
		1677
		1678	=cut
		1679
		1680	sub inv_recursive_;
		1681	sub inv_recursive_ {
		1682	map { $_, inv_recursive_ $_->inv } @_
		1683	}
		1684
		1685	sub inv_recursive {
		1686	inv_recursive_ inv $_[0]
		1687	}
		1688
		1689	package cf;
		1690
		1691	=back
		1692
		1693	=head3 cf::object::player
		1694
		1695	=over 4
		1696
812	=item $player->reply ($npc, $msg[, $flags])	1697	=item $player_object->reply ($npc, $msg[, $flags])
813		1698
814	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1699	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
815	can be C<undef>. Does the right thing when the player is currently in a	1700	can be C<undef>. Does the right thing when the player is currently in a
816	dialogue with the given NPC character.	1701	dialogue with the given NPC character.
817		1702
818	=cut	1703	=cut
819		1704
820	# rough implementation of a future "reply" method that works	1705	# rough implementation of a future "reply" method that works
821	# with dialog boxes.	1706	# with dialog boxes.
		1707	#TODO: the first argument must go, split into a $npc->reply_to ( method
822	sub cf::object::player::reply($$$;$) {	1708	sub cf::object::player::reply($$$;$) {
823	my ($self, $npc, $msg, $flags) = @_;	1709	my ($self, $npc, $msg, $flags) = @_;
824		1710
825	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1711	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
826		1712
…		…
830	$msg = $npc->name . " says: $msg" if $npc;	1716	$msg = $npc->name . " says: $msg" if $npc;
831	$self->message ($msg, $flags);	1717	$self->message ($msg, $flags);
832	}	1718	}
833	}	1719	}
834		1720
835	=item $player->ext_reply ($msgid, $msgtype, %msg)	1721	=item $player_object->may ("access")
836		1722
837	Sends an ext reply to the player.	1723	Returns wether the given player is authorized to access resource "access"
		1724	(e.g. "command_wizcast").
838		1725
839	=cut	1726	=cut
840		1727
841	sub cf::player::ext_reply($$$%) {	1728	sub cf::object::player::may {
		1729	my ($self, $access) = @_;
		1730
		1731	$self->flag (cf::FLAG_WIZ) ||
		1732	(ref $cf::CFG{"may_$access"}
		1733	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1734	: $cf::CFG{"may_$access"})
		1735	}
		1736
		1737	=item $player_object->enter_link
		1738
		1739	Freezes the player and moves him/her to a special map (C<{link}>).
		1740
		1741	The player should be reasonably safe there for short amounts of time. You
		1742	I<MUST> call C<leave_link> as soon as possible, though.
		1743
		1744	Will never block.
		1745
		1746	=item $player_object->leave_link ($map, $x, $y)
		1747
		1748	Moves the player out of the special C<{link}> map onto the specified
		1749	map. If the map is not valid (or omitted), the player will be moved back
		1750	to the location he/she was before the call to C<enter_link>, or, if that
		1751	fails, to the emergency map position.
		1752
		1753	Might block.
		1754
		1755	=cut
		1756
		1757	sub link_map {
		1758	unless ($LINK_MAP) {
		1759	$LINK_MAP = cf::map::find "{link}"
		1760	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1761	$LINK_MAP->load;
		1762	}
		1763
		1764	$LINK_MAP
		1765	}
		1766
		1767	sub cf::object::player::enter_link {
		1768	my ($self) = @_;
		1769
		1770	$self->deactivate_recursive;
		1771
		1772	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1773
		1774	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1775	if $self->map;
		1776
		1777	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1778	}
		1779
		1780	sub cf::object::player::leave_link {
		1781	my ($self, $map, $x, $y) = @_;
		1782
		1783	my $link_pos = delete $self->{_link_pos};
		1784
		1785	unless ($map) {
		1786	# restore original map position
		1787	($map, $x, $y) = @{ $link_pos || [] };
		1788	$map = cf::map::find $map;
		1789
		1790	unless ($map) {
		1791	($map, $x, $y) = @$EMERGENCY_POSITION;
		1792	$map = cf::map::find $map
		1793	or die "FATAL: cannot load emergency map\n";
		1794	}
		1795	}
		1796
		1797	($x, $y) = (-1, -1)
		1798	unless (defined $x) && (defined $y);
		1799
		1800	# use -1 or undef as default coordinates, not 0, 0
		1801	($x, $y) = ($map->enter_x, $map->enter_y)
		1802	if $x <=0 && $y <= 0;
		1803
		1804	$map->load;
		1805	$map->load_diag;
		1806
		1807	return unless $self->contr->active;
		1808	$self->activate_recursive;
		1809
		1810	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1811	$self->enter_map ($map, $x, $y);
		1812	}
		1813
		1814	cf::player->attach (
		1815	on_logout => sub {
		1816	my ($pl) = @_;
		1817
		1818	# abort map switching before logout
		1819	if ($pl->ob->{_link_pos}) {
		1820	cf::sync_job {
		1821	$pl->ob->leave_link
		1822	};
		1823	}
		1824	},
		1825	on_login => sub {
		1826	my ($pl) = @_;
		1827
		1828	# try to abort aborted map switching on player login :)
		1829	# should happen only on crashes
		1830	if ($pl->ob->{_link_pos}) {
		1831	$pl->ob->enter_link;
		1832	(async {
		1833	$pl->ob->reply (undef,
		1834	"There was an internal problem at your last logout, "
		1835	. "the server will try to bring you to your intended destination in a second.",
		1836	cf::NDI_RED);
		1837	# we need this sleep as the login has a concurrent enter_exit running
		1838	# and this sleep increases chances of the player not ending up in scorn
		1839	Coro::Timer::sleep 1;
		1840	$pl->ob->leave_link;
		1841	})->prio (2);
		1842	}
		1843	},
		1844	);
		1845
		1846	=item $player_object->goto ($path, $x, $y)
		1847
		1848	=cut
		1849
		1850	sub cf::object::player::goto {
		1851	my ($self, $path, $x, $y) = @_;
		1852
		1853	$self->enter_link;
		1854
		1855	(async {
		1856	my $map = eval {
		1857	my $map = cf::map::find $path;
		1858	$map = $map->customise_for ($self) if $map;
		1859	$map
		1860	} or
		1861	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1862
		1863	$self->leave_link ($map, $x, $y);
		1864	})->prio (1);
		1865	}
		1866
		1867	=item $player_object->enter_exit ($exit_object)
		1868
		1869	=cut
		1870
		1871	sub parse_random_map_params {
		1872	my ($spec) = @_;
		1873
		1874	my $rmp = { # defaults
		1875	xsize => (cf::rndm 15, 40),
		1876	ysize => (cf::rndm 15, 40),
		1877	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1878	#layout => string,
		1879	};
		1880
		1881	for (split /\n/, $spec) {
		1882	my ($k, $v) = split /\s+/, $_, 2;
		1883
		1884	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1885	}
		1886
		1887	$rmp
		1888	}
		1889
		1890	sub prepare_random_map {
		1891	my ($exit) = @_;
		1892
		1893	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1894
		1895	# all this does is basically replace the /! path by
		1896	# a new random map path (?random/...) with a seed
		1897	# that depends on the exit object
		1898
		1899	my $rmp = parse_random_map_params $exit->msg;
		1900
		1901	if ($exit->map) {
		1902	$rmp->{region} = $exit->region->name;
		1903	$rmp->{origin_map} = $exit->map->path;
		1904	$rmp->{origin_x} = $exit->x;
		1905	$rmp->{origin_y} = $exit->y;
		1906	}
		1907
		1908	$rmp->{random_seed} ||= $exit->random_seed;
		1909
		1910	my $data = cf::to_json $rmp;
		1911	my $md5 = Digest::MD5::md5_hex $data;
		1912	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1913
		1914	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1915	aio_write $fh, 0, (length $data), $data, 0;
		1916	undef $fh;
		1917	aio_rename "$meta~", $meta;
		1918
		1919	$exit->slaying ("?random/$md5");
		1920	$exit->msg (undef);
		1921	}
		1922	}
		1923
		1924	sub cf::object::player::enter_exit {
842	my ($self, $id, %msg) = @_;	1925	my ($self, $exit) = @_;
843		1926
844	$msg{msgid} = $id;	1927	return unless $self->type == cf::PLAYER;
845		1928
846	$self->send ("ext " . to_json \%msg);	1929	if ($exit->slaying eq "/!") {
847	}	1930	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1931	cf::sync_job { prepare_random_map $exit };
		1932	}
848		1933
849	#############################################################################	1934	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
850	# map scripting support	1935	my $hp = $exit->stats->hp;
		1936	my $sp = $exit->stats->sp;
		1937
		1938	$self->enter_link;
		1939
		1940	(async {
		1941	$self->deactivate_recursive; # just to be sure
		1942	unless (eval {
		1943	$self->goto ($slaying, $hp, $sp);
		1944
		1945	1;
		1946	}) {
		1947	$self->message ("Something went wrong deep within the crossfire server. "
		1948	. "I'll try to bring you back to the map you were before. "
		1949	. "Please report this to the dungeon master!",
		1950	cf::NDI_UNIQUE | cf::NDI_RED);
		1951
		1952	warn "ERROR in enter_exit: $@";
		1953	$self->leave_link;
		1954	}
		1955	})->prio (1);
		1956	}
		1957
		1958	=head3 cf::client
		1959
		1960	=over 4
		1961
		1962	=item $client->send_drawinfo ($text, $flags)
		1963
		1964	Sends a drawinfo packet to the client. Circumvents output buffering so
		1965	should not be used under normal circumstances.
		1966
		1967	=cut
		1968
		1969	sub cf::client::send_drawinfo {
		1970	my ($self, $text, $flags) = @_;
		1971
		1972	utf8::encode $text;
		1973	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1974	}
		1975
		1976
		1977	=item $success = $client->query ($flags, "text", \&cb)
		1978
		1979	Queues a query to the client, calling the given callback with
		1980	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1981	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1982
		1983	Queries can fail, so check the return code. Or don't, as queries will become
		1984	reliable at some point in the future.
		1985
		1986	=cut
		1987
		1988	sub cf::client::query {
		1989	my ($self, $flags, $text, $cb) = @_;
		1990
		1991	return unless $self->state == ST_PLAYING
		1992	|| $self->state == ST_SETUP
		1993	|| $self->state == ST_CUSTOM;
		1994
		1995	$self->state (ST_CUSTOM);
		1996
		1997	utf8::encode $text;
		1998	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1999
		2000	$self->send_packet ($self->{query_queue}[0][0])
		2001	if @{ $self->{query_queue} } == 1;
		2002	}
		2003
		2004	cf::client->attach (
		2005	on_reply => sub {
		2006	my ($ns, $msg) = @_;
		2007
		2008	# this weird shuffling is so that direct followup queries
		2009	# get handled first
		2010	my $queue = delete $ns->{query_queue}
		2011	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2012
		2013	(shift @$queue)->[1]->($msg);
		2014	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2015
		2016	push @{ $ns->{query_queue} }, @$queue;
		2017
		2018	if (@{ $ns->{query_queue} } == @$queue) {
		2019	if (@$queue) {
		2020	$ns->send_packet ($ns->{query_queue}[0][0]);
		2021	} else {
		2022	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2023	}
		2024	}
		2025	},
		2026	);
		2027
		2028	=item $client->async (\&cb)
		2029
		2030	Create a new coroutine, running the specified callback. The coroutine will
		2031	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2032	or loss of connection).
		2033
		2034	=cut
		2035
		2036	sub cf::client::async {
		2037	my ($self, $cb) = @_;
		2038
		2039	my $coro = &Coro::async ($cb);
		2040
		2041	$coro->on_destroy (sub {
		2042	delete $self->{_coro}{$coro+0};
		2043	});
		2044
		2045	$self->{_coro}{$coro+0} = $coro;
		2046
		2047	$coro
		2048	}
		2049
		2050	cf::client->attach (
		2051	on_destroy => sub {
		2052	my ($ns) = @_;
		2053
		2054	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2055	},
		2056	);
		2057
		2058	=back
		2059
		2060
		2061	=head2 SAFE SCRIPTING
		2062
		2063	Functions that provide a safe environment to compile and execute
		2064	snippets of perl code without them endangering the safety of the server
		2065	itself. Looping constructs, I/O operators and other built-in functionality
		2066	is not available in the safe scripting environment, and the number of
		2067	functions and methods that can be called is greatly reduced.
		2068
		2069	=cut
851		2070
852	our $safe = new Safe "safe";	2071	our $safe = new Safe "safe";
853	our $safe_hole = new Safe::Hole;	2072	our $safe_hole = new Safe::Hole;
854		2073
855	$SIG{FPE} = 'IGNORE';	2074	$SIG{FPE} = 'IGNORE';
856		2075
857	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2076	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
858		2077
859	# here we export the classes and methods available to script code	2078	# here we export the classes and methods available to script code
860		2079
		2080	=pod
		2081
		2082	The following fucntions and emthods are available within a safe environment:
		2083
		2084	cf::object contr pay_amount pay_player map
		2085	cf::object::player player
		2086	cf::player peaceful
		2087	cf::map trigger
		2088
		2089	=cut
		2090
861	for (	2091	for (
862	["cf::object" => qw(contr pay_amount pay_player)],	2092	["cf::object" => qw(contr pay_amount pay_player map)],
863	["cf::object::player" => qw(player)],	2093	["cf::object::player" => qw(player)],
864	["cf::player" => qw(peaceful)],	2094	["cf::player" => qw(peaceful)],
		2095	["cf::map" => qw(trigger)],
865	) {	2096	) {
866	no strict 'refs';	2097	no strict 'refs';
867	my ($pkg, @funs) = @$_;	2098	my ($pkg, @funs) = @$_;
868	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2099	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
869	for @funs;	2100	for @funs;
870	}	2101	}
		2102
		2103	=over 4
		2104
		2105	=item @retval = safe_eval $code, [var => value, ...]
		2106
		2107	Compiled and executes the given perl code snippet. additional var/value
		2108	pairs result in temporary local (my) scalar variables of the given name
		2109	that are available in the code snippet. Example:
		2110
		2111	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2112
		2113	=cut
871		2114
872	sub safe_eval($;@) {	2115	sub safe_eval($;@) {
873	my ($code, %vars) = @_;	2116	my ($code, %vars) = @_;
874		2117
875	my $qcode = $code;	2118	my $qcode = $code;
…		…
898	}	2141	}
899		2142
900	wantarray ? @res : $res[0]	2143	wantarray ? @res : $res[0]
901	}	2144	}
902		2145
		2146	=item cf::register_script_function $function => $cb
		2147
		2148	Register a function that can be called from within map/npc scripts. The
		2149	function should be reasonably secure and should be put into a package name
		2150	like the extension.
		2151
		2152	Example: register a function that gets called whenever a map script calls
		2153	C<rent::overview>, as used by the C<rent> extension.
		2154
		2155	cf::register_script_function "rent::overview" => sub {
		2156	...
		2157	};
		2158
		2159	=cut
		2160
903	sub register_script_function {	2161	sub register_script_function {
904	my ($fun, $cb) = @_;	2162	my ($fun, $cb) = @_;
905		2163
906	no strict 'refs';	2164	no strict 'refs';
907	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2165	*{"safe::$fun"} = $safe_hole->wrap ($cb);
908	}	2166	}
909		2167
		2168	=back
		2169
		2170	=cut
		2171
910	#############################################################################	2172	#############################################################################
911	# the server's main()	2173
		2174	=head2 EXTENSION DATABASE SUPPORT
		2175
		2176	Crossfire maintains a very simple database for extension use. It can
		2177	currently store anything that can be serialised using Storable, which
		2178	excludes objects.
		2179
		2180	The parameter C<$family> should best start with the name of the extension
		2181	using it, it should be unique.
		2182
		2183	=over 4
		2184
		2185	=item $value = cf::db_get $family => $key
		2186
		2187	Returns a single value from the database.
		2188
		2189	=item cf::db_put $family => $key => $value
		2190
		2191	Stores the given C<$value> in the family.
		2192
		2193	=cut
		2194
		2195	our $DB;
		2196
		2197	sub db_init {
		2198	unless ($DB) {
		2199	$DB = BDB::db_create $DB_ENV;
		2200
		2201	cf::sync_job {
		2202	eval {
		2203	$DB->set_flags (BDB::CHKSUM);
		2204
		2205	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2206	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2207	cf::cleanup "db_open(db): $!" if $!;
		2208	};
		2209	cf::cleanup "db_open(db): $@" if $@;
		2210	};
		2211
		2212	my $path = cf::localdir . "/database.pst";
		2213	if (stat $path) {
		2214	cf::sync_job {
		2215	my $pst = Storable::retrieve $path;
		2216
		2217	cf::db_put (board => data => $pst->{board});
		2218	cf::db_put (guildrules => data => $pst->{guildrules});
		2219	cf::db_put (rent => balance => $pst->{rent}{balance});
		2220	BDB::db_env_txn_checkpoint $DB_ENV;
		2221
		2222	unlink $path;
		2223	};
		2224	}
		2225	}
		2226	}
		2227
		2228	sub db_get($$) {
		2229	my $key = "$_[0]/$_[1]";
		2230
		2231	cf::sync_job {
		2232	BDB::db_get $DB, undef, $key, my $data;
		2233
		2234	$! ? ()
		2235	: Compress::LZF::sthaw $data
		2236	}
		2237	}
		2238
		2239	sub db_put($$$) {
		2240	BDB::dbreq_pri 4;
		2241	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2242	}
		2243
		2244	#############################################################################
		2245	# the server's init and main functions
		2246
		2247	sub load_resources {
		2248	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2249	or die "unable to load regions file\n";#d#
		2250	}
		2251
		2252	sub cfg_load {
		2253	open my $fh, "<:utf8", cf::confdir . "/config"
		2254	or return;
		2255
		2256	local $/;
		2257	*CFG = YAML::Syck::Load <$fh>;
		2258
		2259	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2260
		2261	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2262	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2263
		2264	if (exists $CFG{mlockall}) {
		2265	eval {
		2266	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2267	and die "WARNING: m(un)lockall failed: $!\n";
		2268	};
		2269	warn $@ if $@;
		2270	}
		2271	}
		2272
		2273	sub init {
		2274	load_resources;
		2275	}
912		2276
913	sub main {	2277	sub main {
		2278	# we must not ever block the main coroutine
		2279	local $Coro::idle = sub {
		2280	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2281	(async {
		2282	Event::one_event;
		2283	})->prio (Coro::PRIO_MAX);
		2284	};
		2285
		2286	cfg_load;
		2287	db_init;
		2288	load_extensions;
		2289
		2290	$TICK_WATCHER->start;
914	Event::loop;	2291	Event::loop;
915	}	2292	}
916		2293
917	#############################################################################	2294	#############################################################################
918	# initialisation	2295	# initialisation and cleanup
919		2296
920	register "<global>", __PACKAGE__;	2297	# install some emergency cleanup handlers
		2298	BEGIN {
		2299	for my $signal (qw(INT HUP TERM)) {
		2300	Event->signal (
		2301	reentrant => 0,
		2302	data => WF_AUTOCANCEL,
		2303	signal => $signal,
		2304	prio => 0,
		2305	cb => sub {
		2306	cf::cleanup "SIG$signal";
		2307	},
		2308	);
		2309	}
		2310	}
		2311
		2312	sub emergency_save() {
		2313	my $freeze_guard = cf::freeze_mainloop;
		2314
		2315	warn "enter emergency perl save\n";
		2316
		2317	cf::sync_job {
		2318	# use a peculiar iteration method to avoid tripping on perl
		2319	# refcount bugs in for. also avoids problems with players
		2320	# and maps saved/destroyed asynchronously.
		2321	warn "begin emergency player save\n";
		2322	for my $login (keys %cf::PLAYER) {
		2323	my $pl = $cf::PLAYER{$login} or next;
		2324	$pl->valid or next;
		2325	$pl->save;
		2326	}
		2327	warn "end emergency player save\n";
		2328
		2329	warn "begin emergency map save\n";
		2330	for my $path (keys %cf::MAP) {
		2331	my $map = $cf::MAP{$path} or next;
		2332	$map->valid or next;
		2333	$map->save;
		2334	}
		2335	warn "end emergency map save\n";
		2336
		2337	warn "begin emergency database checkpoint\n";
		2338	BDB::db_env_txn_checkpoint $DB_ENV;
		2339	warn "end emergency database checkpoint\n";
		2340	};
		2341
		2342	warn "leave emergency perl save\n";
		2343	}
		2344
		2345	sub post_cleanup {
		2346	my ($make_core) = @_;
		2347
		2348	warn Carp::longmess "post_cleanup backtrace"
		2349	if $make_core;
		2350	}
		2351
		2352	sub reload() {
		2353	# can/must only be called in main
		2354	if ($Coro::current != $Coro::main) {
		2355	warn "can only reload from main coroutine";
		2356	return;
		2357	}
		2358
		2359	warn "reloading...";
		2360
		2361	warn "entering sync_job";
		2362
		2363	cf::sync_job {
		2364	cf::write_runtime; # external watchdog should not bark
		2365	cf::emergency_save;
		2366	cf::write_runtime; # external watchdog should not bark
		2367
		2368	warn "syncing database to disk";
		2369	BDB::db_env_txn_checkpoint $DB_ENV;
		2370
		2371	# if anything goes wrong in here, we should simply crash as we already saved
		2372
		2373	warn "cancelling all WF_AUTOCANCEL watchers";
		2374	for (Event::all_watchers) {
		2375	$_->cancel if $_->data & WF_AUTOCANCEL;
		2376	}
		2377
		2378	warn "flushing outstanding aio requests";
		2379	for (;;) {
		2380	BDB::flush;
		2381	IO::AIO::flush;
		2382	Coro::cede;
		2383	last unless IO::AIO::nreqs || BDB::nreqs;
		2384	warn "iterate...";
		2385	}
		2386
		2387	warn "cancelling all extension coros";
		2388	$_->cancel for values %EXT_CORO;
		2389	%EXT_CORO = ();
		2390
		2391	warn "removing commands";
		2392	%COMMAND = ();
		2393
		2394	warn "removing ext commands";
		2395	%EXTCMD = ();
		2396
		2397	warn "unloading/nuking all extensions";
		2398	for my $pkg (@EXTS) {
		2399	warn "... unloading $pkg";
		2400
		2401	if (my $cb = $pkg->can ("unload")) {
		2402	eval {
		2403	$cb->($pkg);
		2404	1
		2405	} or warn "$pkg unloaded, but with errors: $@";
		2406	}
		2407
		2408	warn "... nuking $pkg";
		2409	Symbol::delete_package $pkg;
		2410	}
		2411
		2412	warn "unloading all perl modules loaded from $LIBDIR";
		2413	while (my ($k, $v) = each %INC) {
		2414	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2415
		2416	warn "... unloading $k";
		2417	delete $INC{$k};
		2418
		2419	$k =~ s/\.pm$//;
		2420	$k =~ s/\//::/g;
		2421
		2422	if (my $cb = $k->can ("unload_module")) {
		2423	$cb->();
		2424	}
		2425
		2426	Symbol::delete_package $k;
		2427	}
		2428
		2429	warn "getting rid of safe::, as good as possible";
		2430	Symbol::delete_package "safe::$_"
		2431	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2432
		2433	warn "unloading cf.pm \"a bit\"";
		2434	delete $INC{"cf.pm"};
		2435
		2436	# don't, removes xs symbols, too,
		2437	# and global variables created in xs
		2438	#Symbol::delete_package __PACKAGE__;
		2439
		2440	warn "unload completed, starting to reload now";
		2441
		2442	warn "reloading cf.pm";
		2443	require cf;
		2444	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2445
		2446	warn "loading config and database again";
		2447	cf::cfg_load;
		2448
		2449	warn "loading extensions";
		2450	cf::load_extensions;
		2451
		2452	warn "reattaching attachments to objects/players";
		2453	_global_reattach;
		2454	warn "reattaching attachments to maps";
		2455	reattach $_ for values %MAP;
		2456
		2457	warn "loading reloadable resources";
		2458	load_resources;
		2459
		2460	warn "leaving sync_job";
		2461
		2462	1
		2463	} or do {
		2464	warn $@;
		2465	warn "error while reloading, exiting.";
		2466	exit 1;
		2467	};
		2468
		2469	warn "reloaded";
		2470	};
		2471
		2472	our $RELOAD_WATCHER; # used only during reload
		2473
		2474	register_command "reload" => sub {
		2475	my ($who, $arg) = @_;
		2476
		2477	if ($who->flag (FLAG_WIZ)) {
		2478	$who->message ("reloading server.");
		2479
		2480	# doing reload synchronously and two reloads happen back-to-back,
		2481	# coro crashes during coro_state_free->destroy here.
		2482
		2483	$RELOAD_WATCHER ||= Event->timer (
		2484	reentrant => 0,
		2485	after => 0,
		2486	data => WF_AUTOCANCEL,
		2487	cb => sub {
		2488	reload;
		2489	undef $RELOAD_WATCHER;
		2490	},
		2491	);
		2492	}
		2493	};
921		2494
922	unshift @INC, $LIBDIR;	2495	unshift @INC, $LIBDIR;
923		2496
924	load_extensions;	2497	my $bug_warning = 0;
925		2498
926	$TICK_WATCHER = Event->timer (	2499	$TICK_WATCHER = Event->timer (
		2500	reentrant => 0,
		2501	parked => 1,
927	prio => 1,	2502	prio => 0,
928	at => $NEXT_TICK || 1,	2503	at => $NEXT_TICK || $TICK,
		2504	data => WF_AUTOCANCEL,
929	cb => sub {	2505	cb => sub {
		2506	if ($Coro::current != $Coro::main) {
		2507	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2508	unless ++$bug_warning > 10;
		2509	return;
		2510	}
		2511
		2512	$NOW = Event::time;
		2513
930	cf::server_tick; # one server iteration	2514	cf::server_tick; # one server iteration
931		2515	$RUNTIME += $TICK;
932	my $NOW = Event::time;
933	$NEXT_TICK += $TICK;	2516	$NEXT_TICK += $TICK;
934		2517
		2518	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2519	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2520	Coro::async_pool {
		2521	write_runtime
		2522	or warn "ERROR: unable to write runtime file: $!";
		2523	};
		2524	}
		2525
		2526
		2527	$WAIT_FOR_TICK->broadcast;
		2528	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2529
		2530	# my $AFTER = Event::time;
		2531	# warn $AFTER - $NOW;#d#
		2532
935	# if we are delayed by four ticks, skip them all	2533	# if we are delayed by four ticks or more, skip them all
936	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2534	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
937		2535
938	$TICK_WATCHER->at ($NEXT_TICK);	2536	$TICK_WATCHER->at ($NEXT_TICK);
939	$TICK_WATCHER->start;	2537	$TICK_WATCHER->start;
940	},	2538	},
941	);	2539	);
942		2540
943	_reload_2;	2541	{
		2542	BDB::max_poll_time $TICK * 0.1;
		2543	$BDB_POLL_WATCHER = Event->io (
		2544	reentrant => 0,
		2545	fd => BDB::poll_fileno,
		2546	poll => 'r',
		2547	prio => 0,
		2548	data => WF_AUTOCANCEL,
		2549	cb => \&BDB::poll_cb,
		2550	);
		2551	BDB::min_parallel 8;
		2552
		2553	BDB::set_sync_prepare {
		2554	my $status;
		2555	my $current = $Coro::current;
		2556	(
		2557	sub {
		2558	$status = $!;
		2559	$current->ready; undef $current;
		2560	},
		2561	sub {
		2562	Coro::schedule while defined $current;
		2563	$! = $status;
		2564	},
		2565	)
		2566	};
		2567
		2568	unless ($DB_ENV) {
		2569	$DB_ENV = BDB::db_env_create;
		2570
		2571	cf::sync_job {
		2572	eval {
		2573	BDB::db_env_open
		2574	$DB_ENV,
		2575	$BDB_ENV_DIR,
		2576	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2577	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2578	0666;
		2579
		2580	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2581
		2582	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2583	$DB_ENV->set_lk_detect;
		2584	};
		2585
		2586	cf::cleanup "db_env_open(db): $@" if $@;
		2587	};
		2588	}
		2589	}
		2590
		2591	{
		2592	IO::AIO::min_parallel 8;
		2593
		2594	undef $Coro::AIO::WATCHER;
		2595	IO::AIO::max_poll_time $TICK * 0.1;
		2596	$AIO_POLL_WATCHER = Event->io (
		2597	reentrant => 0,
		2598	data => WF_AUTOCANCEL,
		2599	fd => IO::AIO::poll_fileno,
		2600	poll => 'r',
		2601	prio => 6,
		2602	cb => \&IO::AIO::poll_cb,
		2603	);
		2604	}
		2605
		2606	END { cf::emergency_save }
944		2607
945	1	2608	1
946		2609

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