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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.53 by root, Tue Aug 29 13:11:58 2006 UTC vs.
Revision 1.234 by root, Thu Apr 5 13:44:31 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
		14	use Coro 3.52 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21
		22	use BDB ();
		23	use Data::Dumper;
		24	use Digest::MD5;
		25	use Fcntl;
		26	use YAML::Syck ();
		27	use IO::AIO 2.32 ();
10	use Time::HiRes;	28	use Time::HiRes;
11	use Event;	29	use Compress::LZF;
		30
		31	# configure various modules to our taste
		32	#
		33	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		34	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		35
12	$Event::Eval = 1; # no idea why this is required, but it is	36	$Event::Eval = 1; # no idea why this is required, but it is
13		37
14	use strict;	38	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		39	$YAML::Syck::ImplicitUnicode = 1;
15		40
16	_reload_1;	41	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		42
		43	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		44
18	our %COMMAND = ();	45	our %COMMAND = ();
		46	our %COMMAND_TIME = ();
		47
		48	our @EXTS = (); # list of extension package names
		49	our %EXTCMD = ();
		50	our %EXT_CORO = (); # coroutines bound to extensions
		51	our %EXT_MAP = (); # pluggable maps
		52
		53	our $RELOAD; # number of reloads so far
19	our @EVENT;	54	our @EVENT;
20	our %PROP_TYPE;	55	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		56
24	our $TICK = MAX_TIME * 1e-6;	57	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	58	our $TICK_WATCHER;
		59	our $AIO_POLL_WATCHER;
		60	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	61	our $NEXT_TICK;
		62	our $NOW;
		63	our $USE_FSYNC = 1; # use fsync to write maps - default off
		64
		65	our $BDB_POLL_WATCHER;
		66	our $DB_ENV;
		67
		68	our %CFG;
		69
		70	our $UPTIME; $UPTIME ||= time;
		71	our $RUNTIME;
		72
		73	our %PLAYER; # all users
		74	our %MAP; # all maps
		75	our $LINK_MAP; # the special {link} map, which is always available
		76	our $RANDOM_MAPS = cf::localdir . "/random";
		77	our $BDB_ENV_DIR = cf::localdir . "/db";
		78
		79	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		80	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		81
		82	# used to convert map paths into valid unix filenames by replacing / by ∕
		83	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		84
		85	binmode STDOUT;
		86	binmode STDERR;
		87
		88	# read virtual server time, if available
		89	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		90	open my $fh, "<", cf::localdir . "/runtime"
		91	or die "unable to read runtime file: $!";
		92	$RUNTIME = <$fh> + 0.;
		93	}
		94
		95	mkdir cf::localdir;
		96	mkdir cf::localdir . "/" . cf::playerdir;
		97	mkdir cf::localdir . "/" . cf::tmpdir;
		98	mkdir cf::localdir . "/" . cf::uniquedir;
		99	mkdir $RANDOM_MAPS;
		100	mkdir $BDB_ENV_DIR;
		101
		102	our $EMERGENCY_POSITION;
		103
		104	sub cf::map::normalise;
		105
		106	#############################################################################
		107
		108	=head2 GLOBAL VARIABLES
		109
		110	=over 4
		111
		112	=item $cf::UPTIME
		113
		114	The timestamp of the server start (so not actually an uptime).
		115
		116	=item $cf::RUNTIME
		117
		118	The time this server has run, starts at 0 and is increased by $cf::TICK on
		119	every server tick.
		120
		121	=item $cf::LIBDIR
		122
		123	The perl library directory, where extensions and cf-specific modules can
		124	be found. It will be added to C<@INC> automatically.
		125
		126	=item $cf::NOW
		127
		128	The time of the last (current) server tick.
		129
		130	=item $cf::TICK
		131
		132	The interval between server ticks, in seconds.
		133
		134	=item %cf::CFG
		135
		136	Configuration for the server, loaded from C</etc/crossfire/config>, or
		137	from wherever your confdir points to.
		138
		139	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		140
		141	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		142	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		143	processing has been done. Call C<< ->wait >> on them to maximise the
		144	window of cpu time available, or simply to synchronise to the server tick.
		145
		146	=back
		147
		148	=cut
27		149
28	BEGIN {	150	BEGIN {
29	*CORE::GLOBAL::warn = sub {	151	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	152	my $msg = join "", @_;
		153	utf8::encode $msg;
		154
31	$msg .= "\n"	155	$msg .= "\n"
32	unless $msg =~ /\n$/;	156	unless $msg =~ /\n$/;
33		157
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	158	LOG llevError, $msg;
36	};	159	};
37	}	160	}
38		161
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	162	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		163	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	164	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	165	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	166	@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';	167	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		168
75	# we bless all objects into (empty) derived classes to force a method lookup	169	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	170	# 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)) {	171	for my $pkg (qw(
		172	cf::global cf::attachable
		173	cf::object cf::object::player
		174	cf::client cf::player
		175	cf::arch cf::living
		176	cf::map cf::party cf::region
		177	)) {
78	no strict 'refs';	178	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	179	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	180	}
81		181
82	$Event::DIED = sub {	182	$Event::DIED = sub {
83	warn "error in event callback: @_";	183	warn "error in event callback: @_";
84	};	184	};
85		185
86	my %ext_pkg;	186	=head2 UTILITY FUNCTIONS
87	my @exts;	187
88	my @hook;	188	=over 4
89	my %command;	189
90	my %extcmd;	190	=item dumpval $ref
		191
		192	=cut
		193
		194	sub dumpval {
		195	eval {
		196	local $SIG{__DIE__};
		197	my $d;
		198	if (1) {
		199	$d = new Data::Dumper([$_[0]], ["*var"]);
		200	$d->Terse(1);
		201	$d->Indent(2);
		202	$d->Quotekeys(0);
		203	$d->Useqq(1);
		204	#$d->Bless(...);
		205	$d->Seen($_[1]) if @_ > 1;
		206	$d = $d->Dump();
		207	}
		208	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		209	$d
		210	} || "[unable to dump $_[0]: '$@']";
		211	}
		212
		213	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		214
		215	=item $ref = cf::from_json $json
		216
		217	Converts a JSON string into the corresponding perl data structure.
		218
		219	=item $json = cf::to_json $ref
		220
		221	Converts a perl data structure into its JSON representation.
		222
		223	=item cf::lock_wait $string
		224
		225	Wait until the given lock is available. See cf::lock_acquire.
		226
		227	=item my $lock = cf::lock_acquire $string
		228
		229	Wait until the given lock is available and then acquires it and returns
		230	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		231	for example when the coroutine gets canceled), the lock is automatically
		232	returned.
		233
		234	Lock names should begin with a unique identifier (for example, cf::map::find
		235	uses map_find and cf::map::load uses map_load).
		236
		237	=cut
		238
		239	our %LOCK;
		240
		241	sub lock_wait($) {
		242	my ($key) = @_;
		243
		244	# wait for lock, if any
		245	while ($LOCK{$key}) {
		246	push @{ $LOCK{$key} }, $Coro::current;
		247	Coro::schedule;
		248	}
		249	}
		250
		251	sub lock_acquire($) {
		252	my ($key) = @_;
		253
		254	# wait, to be sure we are not locked
		255	lock_wait $key;
		256
		257	$LOCK{$key} = [];
		258
		259	Coro::guard {
		260	# wake up all waiters, to be on the safe side
		261	$_->ready for @{ delete $LOCK{$key} };
		262	}
		263	}
		264
		265	sub freeze_mainloop {
		266	return unless $TICK_WATCHER->is_active;
		267
		268	my $guard = Coro::guard {
		269	$TICK_WATCHER->start;
		270	};
		271	$TICK_WATCHER->stop;
		272	$guard
		273	}
		274
		275	=item cf::async { BLOCK }
		276
		277	Currently the same as Coro::async_pool, meaning you cannot use
		278	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		279	thing you are allowed to do is call C<prio> on it.
		280
		281	=cut
		282
		283	BEGIN { *async = \&Coro::async_pool }
		284
		285	=item cf::sync_job { BLOCK }
		286
		287	The design of crossfire+ requires that the main coro ($Coro::main) is
		288	always able to handle events or runnable, as crossfire+ is only partly
		289	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		290
		291	If it must be done, put the blocking parts into C<sync_job>. This will run
		292	the given BLOCK in another coroutine while waiting for the result. The
		293	server will be frozen during this time, so the block should either finish
		294	fast or be very important.
		295
		296	=cut
		297
		298	sub sync_job(&) {
		299	my ($job) = @_;
		300
		301	if ($Coro::current == $Coro::main) {
		302	# this is the main coro, too bad, we have to block
		303	# till the operation succeeds, freezing the server :/
		304
		305	# TODO: use suspend/resume instead
		306	# (but this is cancel-safe)
		307	my $freeze_guard = freeze_mainloop;
		308
		309	my $busy = 1;
		310	my @res;
		311
		312	(async {
		313	@res = eval { $job->() };
		314	warn $@ if $@;
		315	undef $busy;
		316	})->prio (Coro::PRIO_MAX);
		317
		318	while ($busy) {
		319	Coro::cede or Event::one_event;
		320	}
		321
		322	wantarray ? @res : $res[0]
		323	} else {
		324	# we are in another coroutine, how wonderful, everything just works
		325
		326	$job->()
		327	}
		328	}
		329
		330	=item $coro = cf::async_ext { BLOCK }
		331
		332	Like async, but this coro is automatically being canceled when the
		333	extension calling this is being unloaded.
		334
		335	=cut
		336
		337	sub async_ext(&) {
		338	my $cb = shift;
		339
		340	my $coro = &Coro::async ($cb);
		341
		342	$coro->on_destroy (sub {
		343	delete $EXT_CORO{$coro+0};
		344	});
		345	$EXT_CORO{$coro+0} = $coro;
		346
		347	$coro
		348	}
		349
		350	sub write_runtime {
		351	my $guard = cf::lock_acquire "write_runtime";
		352
		353	my $runtime = cf::localdir . "/runtime";
		354
		355	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		356	or return;
		357
		358	my $value = $cf::RUNTIME + 90 + 10;
		359	# 10 is the runtime save interval, for a monotonic clock
		360	# 60 allows for the watchdog to kill the server.
		361
		362	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		363	and return;
		364
		365	# always fsync - this file is important
		366	aio_fsync $fh
		367	and return;
		368
		369	close $fh
		370	or return;
		371
		372	aio_rename "$runtime~", $runtime
		373	and return;
		374
		375	1
		376	}
		377
		378	=item cf::datalog type => key => value, ...
		379
		380	Log a datalog packet of the given type with the given key-value pairs.
		381
		382	=cut
		383
		384	sub datalog($@) {
		385	my ($type, %kv) = @_;
		386	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		387	}
		388
		389	=back
		390
		391	=cut
91		392
92	#############################################################################	393	#############################################################################
93	# utility functions
94		394
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	395	=head2 ATTACHABLE OBJECTS
96		396
97	sub from_json($) {	397	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	398	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	399	to it. All such attachable objects support the following methods.
100	}
101		400
102	sub to_json($) {	401	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	402	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	403	crossfire+).
105	}
106		404
107	#############################################################################	405	=over 4
108	# "new" plug-in system
109		406
110	=item $object->attach ($attachment, key => $value...)
111
112	=item $object->detach ($attachment)
113
114	Attach/detach a pre-registered attachment to an object.
115
116	=item $player->attach ($attachment, key => $value...)
117
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	407	=item $attachable->attach ($attachment, key => $value...)
123		408
124	=item $map->detach ($attachment)	409	=item $attachable->detach ($attachment)
125		410
126	Attach/detach a pre-registered attachment to a map.	411	Attach/detach a pre-registered attachment to a specific object and give it
		412	the specified key/value pairs as arguments.
127		413
128	=item cf::attach_global ...	414	Example, attach a minesweeper attachment to the given object, making it a
		415	10x10 minesweeper game:
129		416
130	Attach handlers for global events.	417	$obj->attach (minesweeper => width => 10, height => 10);
131		418
132	This and all following C<attach_*>-functions expect any number of the	419	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	420
		421	Checks wether the named attachment is currently attached to the object.
		422
		423	=item cf::CLASS->attach ...
		424
		425	=item cf::CLASS->detach ...
		426
		427	Define an anonymous attachment and attach it to all objects of the given
		428	CLASS. See the next function for an explanation of its arguments.
		429
		430	You can attach to global events by using the C<cf::global> class.
		431
		432	Example, log all player logins:
		433
		434	cf::player->attach (
		435	on_login => sub {
		436	my ($pl) = @_;
		437	...
		438	},
		439	);
		440
		441	Example, attach to the jeweler skill:
		442
		443	cf::object->attach (
		444	type => cf::SKILL,
		445	subtype => cf::SK_JEWELER,
		446	on_use_skill => sub {
		447	my ($sk, $ob, $part, $dir, $msg) = @_;
		448	...
		449	},
		450	);
		451
		452	=item cf::CLASS::attachment $name, ...
		453
		454	Register an attachment by C<$name> through which attachable objects of the
		455	given CLASS can refer to this attachment.
		456
		457	Some classes such as crossfire maps and objects can specify attachments
		458	that are attached at load/instantiate time, thus the need for a name.
		459
		460	These calls expect any number of the following handler/hook descriptions:
134		461
135	=over 4	462	=over 4
136		463
137	=item prio => $number	464	=item prio => $number
138		465
…		…
140	by another C<prio> setting). Lower priority handlers get executed	467	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	468	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	469	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	470	unless you know what you are doing.
144		471
		472	=item type => $type
		473
		474	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		475	given type of objects only (the additional parameter C<subtype> can be
		476	used to further limit to the given subtype).
		477
145	=item on_I<event> => \&cb	478	=item on_I<event> => \&cb
146		479
147	Call the given code reference whenever the named event happens (event is	480	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	481	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	482	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	491	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	492	object/class are recognised.
160		493
161	=back	494	=back
162		495
163	=item cf::attach_to_type $object_type, $subtype, ...	496	Example, define an attachment called "sockpuppet" that calls the given
		497	event handler when a monster attacks:
164		498
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	499	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	500	on_skill_attack => sub {
167	type.	501	my ($self, $victim) = @_;
		502	...
		503	}
		504	}
168		505
169	=item cf::attach_to_objects ...	506	=item $attachable->valid
170		507
171	Attach handlers to all objects. Do not use this except for debugging or	508	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	509	C-level object still exists. If you try to access an object that has no
173	the game.	510	valid C counterpart anymore you get an exception at runtime. This method
174		511	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	512	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		513
193	=cut	514	=cut
194		515
195	# the following variables are defined in .xs and must not be re-created	516	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	517	our @CB_GLOBAL = (); # registry for all global events
		518	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	519	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	520	our @CB_PLAYER = ();
		521	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	522	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	523	our @CB_MAP = ();
201		524
202	my %attachment;	525	my %attachment;
203		526
		527	sub cf::attachable::thawer_merge {
		528	# simply override everything except _meta
		529	local $_[0]{_meta};
		530	%{$_[0]} = %{$_[1]};
		531	}
		532
204	sub _attach_cb($\%$$$) {	533	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	534	my ($registry, $event, $prio, $cb) = @_;
206		535
207	use sort 'stable';	536	use sort 'stable';
208		537
209	$cb = [$prio, $cb];	538	$cb = [$prio, $cb];
210		539
211	@{$registry->[$event]} = sort	540	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	541	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	542	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	543	}
		544
		545	# hack
		546	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		547
218	# attach handles attaching event callbacks	548	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	549	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	550	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	551	sub _attach {
222	my ($registry, $klass, @arg) = @_;	552	my ($registry, $klass, @arg) = @_;
223		553
		554	my $object_type;
224	my $prio = 0;	555	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	556	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		557
		558	#TODO: get rid of this hack
		559	if ($attachable_klass{$klass}) {
		560	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		561	}
232		562
233	while (@arg) {	563	while (@arg) {
234	my $type = shift @arg;	564	my $type = shift @arg;
235		565
236	if ($type eq "prio") {	566	if ($type eq "prio") {
237	$prio = shift @arg;	567	$prio = shift @arg;
238		568
		569	} elsif ($type eq "type") {
		570	$object_type = shift @arg;
		571	$registry = $CB_TYPE[$object_type] ||= [];
		572
		573	} elsif ($type eq "subtype") {
		574	defined $object_type or Carp::croak "subtype specified without type";
		575	my $object_subtype = shift @arg;
		576	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		577
239	} elsif ($type eq "package") {	578	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	579	my $pkg = shift @arg;
241		580
242	while (my ($name, $id) = each %cb_id) {	581	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	582	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	583	_attach_cb $registry, $id, $prio, $cb;
245	}	584	}
246	}	585	}
247		586
248	} elsif (exists $cb_id{$type}) {	587	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	588	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		589
251	} elsif (ref $type) {	590	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	591	warn "attaching objects not supported, ignoring.\n";
253		592
254	} else {	593	} else {
255	shift @arg;	594	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	595	warn "attach argument '$type' not supported, ignoring.\n";
257	}	596	}
258	}	597	}
259
260	\%undo
261	}	598	}
262		599
263	sub _attach_attachment {	600	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	601	my ($obj, $name, %arg) = @_;
265		602
266	my $res;	603	return if exists $obj->{_attachment}{$name};
267		604
268	if (my $attach = $attachment{$name}) {	605	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	606	my $registry = $obj->registry;
270		607
271	for (@$attach) {	608	for (@$attach) {
272	my ($klass, @attach) = @$_;	609	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	610	_attach $registry, $klass, @attach;
274	}	611	}
275		612
276	$obj->{$name} = \%arg;	613	$obj->{$name} = \%arg;
277	} else {	614	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	615	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	616	}
280		617
281	$obj->{_attachment}{$name} = undef;	618	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	619	}
286		620
287	sub cf::object::attach {	621	sub cf::attachable::attach {
288	my ($obj, $name, %arg) = @_;	622	if (ref $_[0]) {
		623	_object_attach @_;
		624	} else {
		625	_attach shift->_attach_registry, @_;
		626	}
		627	};
289		628
290	_attach_attachment $obj, $name, %arg;	629	# all those should be optimised
291	}
292
293	sub cf::player::attach {
294	my ($obj, $name, %arg) = @_;
295
296	_attach_attachment $obj, $name, %arg;
297	}
298
299	sub cf::map::attach {
300	my ($obj, $name, %arg) = @_;
301
302	_attach_attachment $obj, $name, %arg;
303	}
304
305	sub cf::object::detach {	630	sub cf::attachable::detach {
306	my ($obj, $name) = @_;	631	my ($obj, $name) = @_;
307	die;#d#	632
308	}	633	if (ref $obj) {
309	sub cf::player::detach {	634	delete $obj->{_attachment}{$name};
		635	reattach ($obj);
		636	} else {
		637	Carp::croak "cannot, currently, detach class attachments";
		638	}
		639	};
		640
		641	sub cf::attachable::attached {
310	my ($obj, $name) = @_;	642	my ($obj, $name) = @_;
311	die;#d#
312	}
313	sub cf::map::detach {
314	my ($obj, $name) = @_;
315	die;#d#
316	}
317		643
318	sub attach_global {	644	exists $obj->{_attachment}{$name}
319	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
320	}	645	}
321		646
322	sub attach_to_type {	647	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
323	my $type = shift;	648	eval "#line " . __LINE__ . " 'cf.pm'
324	my $subtype = shift;	649	sub cf::\L$klass\E::_attach_registry {
		650	(\\\@CB_$klass, KLASS_$klass)
		651	}
325		652
326	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_	653	sub cf::\L$klass\E::attachment {
327	}
328
329	sub attach_to_objects {
330	_attach @CB_OBJECT, KLASS_OBJECT, @_
331	}
332
333	sub attach_to_players {
334	_attach @CB_PLAYER, KLASS_PLAYER, @_
335	}
336
337	sub attach_to_maps {
338	_attach @CB_MAP, KLASS_MAP, @_
339	}
340
341	sub register_attachment {
342	my $name = shift;	654	my \$name = shift;
343		655
344	$attachment{$name} = [[KLASS_OBJECT, @_]];
345	}
346
347	sub register_map_attachment {
348	my $name = shift;
349
350	$attachment{$name} = [[KLASS_MAP, @_]];	656	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		657	}
		658	";
		659	die if $@;
351	}	660	}
352		661
353	our $override;	662	our $override;
354	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	663	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
355		664
…		…
369	for (@$callbacks) {	678	for (@$callbacks) {
370	eval { &{$_->[1]} };	679	eval { &{$_->[1]} };
371		680
372	if ($@) {	681	if ($@) {
373	warn "$@";	682	warn "$@";
374	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	683	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
375	override;	684	override;
376	}	685	}
377		686
378	return 1 if $override;	687	return 1 if $override;
379	}	688	}
380		689
381	0	690	0
382	}	691	}
		692
		693	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		694
		695	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		696
		697	Generate an object-specific event with the given arguments.
		698
		699	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		700	removed in future versions), and there is no public API to access override
		701	results (if you must, access C<@cf::invoke_results> directly).
		702
		703	=back
		704
		705	=cut
383		706
384	#############################################################################	707	#############################################################################
385	# object support	708	# object support
386		709
387	sub instantiate {
388	my ($obj, $data) = @_;
389
390	$data = from_json $data;
391
392	for (@$data) {
393	my ($name, $args) = @$_;
394
395	$obj->attach ($name, %{$args || {} });
396	}
397	}
398
399	# basically do the same as instantiate, without calling instantiate
400	sub reattach {	710	sub reattach {
		711	# basically do the same as instantiate, without calling instantiate
401	my ($obj) = @_;	712	my ($obj) = @_;
		713
		714	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		715
402	my $registry = $obj->registry;	716	my $registry = $obj->registry;
403		717
404	@$registry = ();	718	@$registry = ();
405		719
406	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	720	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
407		721
408	for my $name (keys %{ $obj->{_attachment} || {} }) {	722	for my $name (keys %{ $obj->{_attachment} || {} }) {
409	if (my $attach = $attachment{$name}) {	723	if (my $attach = $attachment{$name}) {
410	for (@$attach) {	724	for (@$attach) {
411	my ($klass, @attach) = @$_;	725	my ($klass, @attach) = @$_;
412	_attach @$registry, $klass, @attach;	726	_attach $registry, $klass, @attach;
413	}	727	}
414	} else {	728	} else {
415	warn "object uses attachment '$name' that is not available, postponing.\n";	729	warn "object uses attachment '$name' that is not available, postponing.\n";
416	}	730	}
417	}	731	}
418	}	732	}
419		733
420	sub object_freezer_save {	734	cf::attachable->attach (
421	my ($filename, $objs) = @_;
422
423	if (@$objs) {
424	open my $fh, ">:raw", "$filename.pst~";
425	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
426	close $fh;
427	chmod SAVE_MODE, "$filename.pst~";
428	rename "$filename.pst~", "$filename.pst";
429	} else {
430	unlink "$filename.pst";
431	}
432
433	chmod SAVE_MODE, "$filename~";
434	rename "$filename~", $filename;
435	}
436
437	sub object_thawer_load {
438	my ($filename) = @_;
439
440	open my $fh, "<:raw:perlio", "$filename.pst"
441	or return;
442
443	eval { local $/; (Storable::thaw <$fh>)->{objs} }
444	}
445
446	attach_to_objects
447	prio => -1000000,	735	prio => -1000000,
		736	on_instantiate => sub {
		737	my ($obj, $data) = @_;
		738
		739	$data = from_json $data;
		740
		741	for (@$data) {
		742	my ($name, $args) = @$_;
		743
		744	$obj->attach ($name, %{$args || {} });
		745	}
		746	},
		747	on_reattach => \&reattach,
448	on_clone => sub {	748	on_clone => sub {
449	my ($src, $dst) = @_;	749	my ($src, $dst) = @_;
450		750
451	@{$dst->registry} = @{$src->registry};	751	@{$dst->registry} = @{$src->registry};
452		752
453	%$dst = %$src;	753	%$dst = %$src;
454		754
455	%{$dst->{_attachment}} = %{$src->{_attachment}}	755	%{$dst->{_attachment}} = %{$src->{_attachment}}
456	if exists $src->{_attachment};	756	if exists $src->{_attachment};
457	},	757	},
458	;	758	);
		759
		760	sub object_freezer_save {
		761	my ($filename, $rdata, $objs) = @_;
		762
		763	sync_job {
		764	if (length $$rdata) {
		765	warn sprintf "saving %s (%d,%d)\n",
		766	$filename, length $$rdata, scalar @$objs;
		767
		768	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		769	chmod SAVE_MODE, $fh;
		770	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		771	aio_fsync $fh if $cf::USE_FSYNC;
		772	close $fh;
		773
		774	if (@$objs) {
		775	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		776	chmod SAVE_MODE, $fh;
		777	my $data = Storable::nfreeze { version => 1, objs => $objs };
		778	aio_write $fh, 0, (length $data), $data, 0;
		779	aio_fsync $fh if $cf::USE_FSYNC;
		780	close $fh;
		781	aio_rename "$filename.pst~", "$filename.pst";
		782	}
		783	} else {
		784	aio_unlink "$filename.pst";
		785	}
		786
		787	aio_rename "$filename~", $filename;
		788	} else {
		789	warn "FATAL: $filename~: $!\n";
		790	}
		791	} else {
		792	aio_unlink $filename;
		793	aio_unlink "$filename.pst";
		794	}
		795	}
		796	}
		797
		798	sub object_freezer_as_string {
		799	my ($rdata, $objs) = @_;
		800
		801	use Data::Dumper;
		802
		803	$$rdata . Dumper $objs
		804	}
		805
		806	sub object_thawer_load {
		807	my ($filename) = @_;
		808
		809	my ($data, $av);
		810
		811	(aio_load $filename, $data) >= 0
		812	or return;
		813
		814	unless (aio_stat "$filename.pst") {
		815	(aio_load "$filename.pst", $av) >= 0
		816	or return;
		817	$av = eval { (Storable::thaw $av)->{objs} };
		818	}
		819
		820	warn sprintf "loading %s (%d)\n",
		821	$filename, length $data, scalar @{$av || []};#d#
		822	return ($data, $av);
		823	}
459		824
460	#############################################################################	825	#############################################################################
461	# old plug-in events	826	# command handling &c
462		827
463	sub inject_event {	828	=item cf::register_command $name => \&callback($ob,$args);
464	my $extension = shift;
465	my $event_code = shift;
466		829
467	my $cb = $hook[$event_code]{$extension}	830	Register a callback for execution when the client sends the user command
468	or return;	831	$name.
469		832
470	&$cb	833	=cut
471	}
472
473	sub inject_global_event {
474	my $event = shift;
475
476	my $cb = $hook[$event]
477	or return;
478
479	List::Util::max map &$_, values %$cb
480	}
481
482	sub inject_command {
483	my ($name, $obj, $params) = @_;
484
485	for my $cmd (@{ $command{$name} }) {
486	$cmd->[1]->($obj, $params);
487	}
488
489	-1
490	}
491		834
492	sub register_command {	835	sub register_command {
493	my ($name, $time, $cb) = @_;	836	my ($name, $cb) = @_;
494		837
495	my $caller = caller;	838	my $caller = caller;
496	#warn "registering command '$name/$time' to '$caller'";	839	#warn "registering command '$name/$time' to '$caller'";
497		840
498	push @{ $command{$name} }, [$time, $cb, $caller];	841	push @{ $COMMAND{$name} }, [$caller, $cb];
499	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
500	}	842	}
		843
		844	=item cf::register_extcmd $name => \&callback($pl,$packet);
		845
		846	Register a callbackf ro execution when the client sends an extcmd packet.
		847
		848	If the callback returns something, it is sent back as if reply was being
		849	called.
		850
		851	=cut
501		852
502	sub register_extcmd {	853	sub register_extcmd {
503	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
504		855
505	my $caller = caller;	856	$EXTCMD{$name} = $cb;
506	#warn "registering extcmd '$name' to '$caller'";
507
508	$extcmd{$name} = [$cb, $caller];
509	}	857	}
510		858
511	sub register {	859	cf::player->attach (
512	my ($base, $pkg) = @_;	860	on_command => sub {
		861	my ($pl, $name, $params) = @_;
513		862
514	#TODO	863	my $cb = $COMMAND{$name}
515	}	864	or return;
		865
		866	for my $cmd (@$cb) {
		867	$cmd->[1]->($pl->ob, $params);
		868	}
		869
		870	cf::override;
		871	},
		872	on_extcmd => sub {
		873	my ($pl, $buf) = @_;
		874
		875	my $msg = eval { from_json $buf };
		876
		877	if (ref $msg) {
		878	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		879	if (my %reply = $cb->($pl, $msg)) {
		880	$pl->ext_reply ($msg->{msgid}, %reply);
		881	}
		882	}
		883	} else {
		884	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		885	}
		886
		887	cf::override;
		888	},
		889	);
516		890
517	sub load_extension {	891	sub load_extension {
518	my ($path) = @_;	892	my ($path) = @_;
519		893
520	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	894	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
521	my $base = $1;	895	my $base = $1;
522	my $pkg = $1;	896	my $pkg = $1;
523	$pkg =~ s/[^[:word:]]/_/g;	897	$pkg =~ s/[^[:word:]]/_/g;
524	$pkg = "ext::$pkg";	898	$pkg = "ext::$pkg";
525		899
526	warn "loading '$path' into '$pkg'\n";	900	warn "... loading '$path' into '$pkg'\n";
527		901
528	open my $fh, "<:utf8", $path	902	open my $fh, "<:utf8", $path
529	or die "$path: $!";	903	or die "$path: $!";
530		904
531	my $source =	905	my $source =
532	"package $pkg; use strict; use utf8;\n"	906	"package $pkg; use strict; use utf8;\n"
533	. "#line 1 \"$path\"\n{\n"	907	. "#line 1 \"$path\"\n{\n"
534	. (do { local $/; <$fh> })	908	. (do { local $/; <$fh> })
535	. "\n};\n1";	909	. "\n};\n1";
536		910
537	eval $source	911	unless (eval $source) {
538	or die "$path: $@";	912	my $msg = $@ ? "$path: $@\n"
539		913	: "extension disabled.\n";
540	push @exts, $pkg;	914	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
541	$ext_pkg{$base} = $pkg;	915	warn $@;
542		916	warn "mandatory extension failed to load, exiting.\n";
543	# no strict 'refs';	917	exit 1;
544	# @{"$pkg\::ISA"} = ext::;	918	}
545		919	die $@;
546	register $base, $pkg;
547	}
548
549	sub unload_extension {
550	my ($pkg) = @_;
551
552	warn "removing extension $pkg\n";
553
554	# remove hooks
555	#TODO
556	# for my $idx (0 .. $#PLUGIN_EVENT) {
557	# delete $hook[$idx]{$pkg};
558	# }	920	}
559		921
560	# remove commands	922	push @EXTS, $pkg;
561	for my $name (keys %command) {
562	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
563
564	if (@cb) {
565	$command{$name} = \@cb;
566	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
567	} else {
568	delete $command{$name};
569	delete $COMMAND{"$name\000"};
570	}
571	}
572
573	# remove extcmds
574	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
575	delete $extcmd{$name};
576	}
577
578	if (my $cb = $pkg->can ("unload")) {
579	eval {
580	$cb->($pkg);
581	1
582	} or warn "$pkg unloaded, but with errors: $@";
583	}
584
585	Symbol::delete_package $pkg;
586	}	923	}
587		924
588	sub load_extensions {	925	sub load_extensions {
589	my $LIBDIR = maps_directory "perl";
590
591	for my $ext (<$LIBDIR/*.ext>) {	926	for my $ext (<$LIBDIR/*.ext>) {
592	next unless -r $ext;	927	next unless -r $ext;
593	eval {	928	eval {
594	load_extension $ext;	929	load_extension $ext;
595	1	930	1
596	} or warn "$ext not loaded: $@";	931	} or warn "$ext not loaded: $@";
597	}	932	}
598	}	933	}
599		934
600	sub _perl_reload(&) {	935	#############################################################################
		936
		937	=head2 CORE EXTENSIONS
		938
		939	Functions and methods that extend core crossfire objects.
		940
		941	=cut
		942
		943	package cf::player;
		944
		945	use Coro::AIO;
		946
		947	=head3 cf::player
		948
		949	=over 4
		950
		951	=item cf::player::find $login
		952
		953	Returns the given player object, loading it if necessary (might block).
		954
		955	=cut
		956
		957	sub playerdir($) {
		958	cf::localdir
		959	. "/"
		960	. cf::playerdir
		961	. "/"
		962	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		963	}
		964
		965	sub path($) {
		966	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		967
		968	(playerdir $login) . "/playerdata"
		969	}
		970
		971	sub find_active($) {
		972	$cf::PLAYER{$_[0]}
		973	and $cf::PLAYER{$_[0]}->active
		974	and $cf::PLAYER{$_[0]}
		975	}
		976
		977	sub exists($) {
		978	my ($login) = @_;
		979
		980	$cf::PLAYER{$login}
		981	or cf::sync_job { !aio_stat path $login }
		982	}
		983
		984	sub find($) {
		985	return $cf::PLAYER{$_[0]} || do {
		986	my $login = $_[0];
		987
		988	my $guard = cf::lock_acquire "user_find:$login";
		989
		990	$cf::PLAYER{$_[0]} || do {
		991	# rename old playerfiles to new ones
		992	#TODO: remove when no longer required
		993	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		994	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		995	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		996	aio_unlink +(playerdir $login) . "/$login.pl";
		997
		998	my $pl = load_pl path $login
		999	or return;
		1000	$cf::PLAYER{$login} = $pl
		1001	}
		1002	}
		1003	}
		1004
		1005	sub save($) {
		1006	my ($pl) = @_;
		1007
		1008	return if $pl->{deny_save};
		1009
		1010	my $path = path $pl;
		1011	my $guard = cf::lock_acquire "user_save:$path";
		1012
		1013	return if $pl->{deny_save};
		1014
		1015	aio_mkdir playerdir $pl, 0770;
		1016	$pl->{last_save} = $cf::RUNTIME;
		1017
		1018	$pl->save_pl ($path);
		1019	Coro::cede;
		1020	}
		1021
		1022	sub new($) {
		1023	my ($login) = @_;
		1024
		1025	my $self = create;
		1026
		1027	$self->ob->name ($login);
		1028	$self->{deny_save} = 1;
		1029
		1030	$cf::PLAYER{$login} = $self;
		1031
		1032	$self
		1033	}
		1034
		1035	=item $pl->quit_character
		1036
		1037	Nukes the player without looking back. If logged in, the connection will
		1038	be destroyed. May block for a long time.
		1039
		1040	=cut
		1041
		1042	sub quit_character {
		1043	my ($pl) = @_;
		1044
		1045	my $name = $pl->ob->name;
		1046
		1047	$pl->{deny_save} = 1;
		1048	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1049
		1050	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1051	$pl->deactivate;
		1052	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1053	$pl->ns->destroy if $pl->ns;
		1054
		1055	my $path = playerdir $pl;
		1056	my $temp = "$path~$cf::RUNTIME~deleting~";
		1057	aio_rename $path, $temp;
		1058	delete $cf::PLAYER{$pl->ob->name};
		1059	$pl->destroy;
		1060
		1061	my $prefix = qr<^~\Q$name\E/>;
		1062
		1063	# nuke player maps
		1064	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1065
		1066	IO::AIO::aio_rmtree $temp;
		1067	}
		1068
		1069	=item $pl->kick
		1070
		1071	Kicks a player out of the game. This destroys the connection.
		1072
		1073	=cut
		1074
		1075	sub kick {
		1076	my ($pl, $kicker) = @_;
		1077
		1078	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1079	$pl->killer ("kicked");
		1080	$pl->ns->destroy;
		1081	}
		1082
		1083	=item cf::player::list_logins
		1084
		1085	Returns am arrayref of all valid playernames in the system, can take a
		1086	while and may block, so not sync_job-capable, ever.
		1087
		1088	=cut
		1089
		1090	sub list_logins {
		1091	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1092	or return [];
		1093
		1094	my @logins;
		1095
		1096	for my $login (@$dirs) {
		1097	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1098	aio_read $fh, 0, 512, my $buf, 0 or next;
		1099	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1100
		1101	utf8::decode $login;
		1102	push @logins, $login;
		1103	}
		1104
		1105	\@logins
		1106	}
		1107
		1108	=item $player->maps
		1109
		1110	Returns an arrayref of map paths that are private for this
		1111	player. May block.
		1112
		1113	=cut
		1114
		1115	sub maps($) {
		1116	my ($pl) = @_;
		1117
		1118	$pl = ref $pl ? $pl->ob->name : $pl;
		1119
		1120	my $files = aio_readdir playerdir $pl
		1121	or return;
		1122
		1123	my @paths;
		1124
		1125	for (@$files) {
		1126	utf8::decode $_;
		1127	next if /\.(?:pl|pst)$/;
		1128	next unless /^$PATH_SEP/o;
		1129
		1130	push @paths, cf::map::normalise "~$pl/$_";
		1131	}
		1132
		1133	\@paths
		1134	}
		1135
		1136	=item $player->ext_reply ($msgid, %msg)
		1137
		1138	Sends an ext reply to the player.
		1139
		1140	=cut
		1141
		1142	sub ext_reply($$%) {
		1143	my ($self, $id, %msg) = @_;
		1144
		1145	$msg{msgid} = $id;
		1146
		1147	$self->send ("ext " . cf::to_json \%msg);
		1148	}
		1149
		1150	=item $player->ext_event ($type, %msg)
		1151
		1152	Sends an ext event to the client.
		1153
		1154	=cut
		1155
		1156	sub ext_event($$%) {
		1157	my ($self, $type, %msg) = @_;
		1158
		1159	$self->ns->ext_event ($type, %msg);
		1160	}
		1161
		1162	package cf;
		1163
		1164	=back
		1165
		1166
		1167	=head3 cf::map
		1168
		1169	=over 4
		1170
		1171	=cut
		1172
		1173	package cf::map;
		1174
		1175	use Fcntl;
		1176	use Coro::AIO;
		1177
		1178	use overload
		1179	'""' => \&as_string,
		1180	fallback => 1;
		1181
		1182	our $MAX_RESET = 3600;
		1183	our $DEFAULT_RESET = 3000;
		1184
		1185	sub generate_random_map {
		1186	my ($self, $rmp) = @_;
		1187	# mit "rum" bekleckern, nicht
		1188	$self->_create_random_map (
		1189	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1190	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1191	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1192	$rmp->{exit_on_final_map},
		1193	$rmp->{xsize}, $rmp->{ysize},
		1194	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1195	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1196	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1197	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1198	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1199	(cf::region::find $rmp->{region}), $rmp->{custom}
		1200	)
		1201	}
		1202
		1203	=item cf::map->register ($regex, $prio)
		1204
		1205	Register a handler for the map path matching the given regex at the
		1206	givne priority (higher is better, built-in handlers have priority 0, the
		1207	default).
		1208
		1209	=cut
		1210
		1211	sub register {
		1212	my (undef, $regex, $prio) = @_;
		1213	my $pkg = caller;
		1214
		1215	no strict;
		1216	push @{"$pkg\::ISA"}, __PACKAGE__;
		1217
		1218	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1219	}
		1220
		1221	# also paths starting with '/'
		1222	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1223
		1224	sub thawer_merge {
		1225	my ($self, $merge) = @_;
		1226
		1227	# we have to keep some variables in memory intact
		1228	local $self->{path};
		1229	local $self->{load_path};
		1230	local $self->{deny_save};
		1231	local $self->{deny_reset};
		1232
		1233	$self->SUPER::thawer_merge ($merge);
		1234	}
		1235
		1236	sub normalise {
		1237	my ($path, $base) = @_;
		1238
		1239	$path = "$path"; # make sure its a string
		1240
		1241	$path =~ s/\.map$//;
		1242
		1243	# map plan:
		1244	#
		1245	# /! non-realised random map exit (special hack!)
		1246	# {... are special paths that are not being touched
		1247	# ?xxx/... are special absolute paths
		1248	# ?random/... random maps
		1249	# /... normal maps
		1250	# ~user/... per-player map of a specific user
		1251
		1252	$path =~ s/$PATH_SEP/\//go;
		1253
		1254	# treat it as relative path if it starts with
		1255	# something that looks reasonable
		1256	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1257	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1258
		1259	$base =~ s{[^/]+/?$}{};
		1260	$path = "$base/$path";
		1261	}
		1262
		1263	for ($path) {
		1264	redo if s{//}{/};
		1265	redo if s{/\.?/}{/};
		1266	redo if s{/[^/]+/\.\./}{/};
		1267	}
		1268
		1269	$path
		1270	}
		1271
		1272	sub new_from_path {
		1273	my (undef, $path, $base) = @_;
		1274
		1275	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1276
		1277	$path = normalise $path, $base;
		1278
		1279	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1280	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1281	my $self = bless cf::map::new, $pkg;
		1282	$self->{path} = $path; $self->path ($path);
		1283	$self->init; # pass $1 etc.
		1284	return $self;
		1285	}
		1286	}
		1287
		1288	Carp::carp "unable to resolve path '$path' (base '$base').";
		1289	()
		1290	}
		1291
		1292	sub init {
		1293	my ($self) = @_;
		1294
		1295	$self
		1296	}
		1297
		1298	sub as_string {
		1299	my ($self) = @_;
		1300
		1301	"$self->{path}"
		1302	}
		1303
		1304	# the displayed name, this is a one way mapping
		1305	sub visible_name {
		1306	&as_string
		1307	}
		1308
		1309	# the original (read-only) location
		1310	sub load_path {
		1311	my ($self) = @_;
		1312
		1313	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1314	}
		1315
		1316	# the temporary/swap location
		1317	sub save_path {
		1318	my ($self) = @_;
		1319
		1320	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1321	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1322	}
		1323
		1324	# the unique path, undef == no special unique path
		1325	sub uniq_path {
		1326	my ($self) = @_;
		1327
		1328	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1329	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1330	}
		1331
		1332	# and all this just because we cannot iterate over
		1333	# all maps in C++...
		1334	sub change_all_map_light {
		1335	my ($change) = @_;
		1336
		1337	$_->change_map_light ($change)
		1338	for grep $_->outdoor, values %cf::MAP;
		1339	}
		1340
		1341	sub unlink_save {
		1342	my ($self) = @_;
		1343
		1344	utf8::encode (my $save = $self->save_path);
		1345	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1346	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1347	}
		1348
		1349	sub load_header_from($) {
		1350	my ($self, $path) = @_;
		1351
		1352	utf8::encode $path;
		1353	#aio_open $path, O_RDONLY, 0
		1354	# or return;
		1355
		1356	$self->_load_header ($path)
		1357	or return;
		1358
		1359	$self->{load_path} = $path;
		1360
		1361	1
		1362	}
		1363
		1364	sub load_header_orig {
		1365	my ($self) = @_;
		1366
		1367	$self->load_header_from ($self->load_path)
		1368	}
		1369
		1370	sub load_header_temp {
		1371	my ($self) = @_;
		1372
		1373	$self->load_header_from ($self->save_path)
		1374	}
		1375
		1376	sub prepare_temp {
		1377	my ($self) = @_;
		1378
		1379	$self->last_access ((delete $self->{last_access})
		1380	|| $cf::RUNTIME); #d#
		1381	# safety
		1382	$self->{instantiate_time} = $cf::RUNTIME
		1383	if $self->{instantiate_time} > $cf::RUNTIME;
		1384	}
		1385
		1386	sub prepare_orig {
		1387	my ($self) = @_;
		1388
		1389	$self->{load_original} = 1;
		1390	$self->{instantiate_time} = $cf::RUNTIME;
		1391	$self->last_access ($cf::RUNTIME);
		1392	$self->instantiate;
		1393	}
		1394
		1395	sub load_header {
		1396	my ($self) = @_;
		1397
		1398	if ($self->load_header_temp) {
		1399	$self->prepare_temp;
		1400	} else {
		1401	$self->load_header_orig
		1402	or return;
		1403	$self->prepare_orig;
		1404	}
		1405
		1406	1
		1407	}
		1408
		1409	sub find;
		1410	sub find {
		1411	my ($path, $origin) = @_;
		1412
		1413	$path = normalise $path, $origin && $origin->path;
		1414
		1415	cf::lock_wait "map_find:$path";
		1416
		1417	$cf::MAP{$path} || do {
		1418	my $guard = cf::lock_acquire "map_find:$path";
		1419	my $map = new_from_path cf::map $path
		1420	or return;
		1421
		1422	$map->{last_save} = $cf::RUNTIME;
		1423
		1424	$map->load_header
		1425	or return;
		1426
		1427	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1428	# doing this can freeze the server in a sync job, obviously
		1429	#$cf::WAIT_FOR_TICK->wait;
		1430	$map->reset;
		1431	undef $guard;
		1432	return find $path;
		1433	}
		1434
		1435	$cf::MAP{$path} = $map
		1436	}
		1437	}
		1438
		1439	sub pre_load { }
		1440	sub post_load { }
		1441
		1442	sub load {
		1443	my ($self) = @_;
		1444
		1445	local $self->{deny_reset} = 1; # loading can take a long time
		1446
		1447	my $path = $self->{path};
		1448	my $guard = cf::lock_acquire "map_load:$path";
		1449
		1450	return if $self->in_memory != cf::MAP_SWAPPED;
		1451
		1452	$self->in_memory (cf::MAP_LOADING);
		1453
		1454	$self->alloc;
		1455
		1456	$self->pre_load;
		1457
		1458	$self->_load_objects ($self->{load_path}, 1)
		1459	or return;
		1460
		1461	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1462	if delete $self->{load_original};
		1463
		1464	if (my $uniq = $self->uniq_path) {
		1465	utf8::encode $uniq;
		1466	if (aio_open $uniq, O_RDONLY, 0) {
		1467	$self->clear_unique_items;
		1468	$self->_load_objects ($uniq, 0);
		1469	}
		1470	}
		1471
		1472	Coro::cede;
		1473
		1474	# now do the right thing for maps
		1475	$self->link_multipart_objects;
		1476
		1477	unless ($self->{deny_activate}) {
		1478	$self->decay_objects;
		1479	$self->fix_auto_apply;
		1480	$self->update_buttons;
		1481	Coro::cede;
		1482	$self->set_darkness_map;
		1483	$self->difficulty ($self->estimate_difficulty)
		1484	unless $self->difficulty;
		1485	Coro::cede;
		1486	$self->activate;
		1487	}
		1488
		1489	$self->post_load;
		1490
		1491	$self->in_memory (cf::MAP_IN_MEMORY);
		1492	}
		1493
		1494	sub customise_for {
		1495	my ($self, $ob) = @_;
		1496
		1497	return find "~" . $ob->name . "/" . $self->{path}
		1498	if $self->per_player;
		1499
		1500	$self
		1501	}
		1502
		1503	# find and load all maps in the 3x3 area around a map
		1504	sub load_diag {
601	my ($msg) = @_;	1505	my ($map) = @_;
602		1506
603	$msg->("reloading...");	1507	my @diag; # diagonal neighbours
604		1508
605	eval {	1509	for (0 .. 3) {
606	# 1. cancel all watchers	1510	my $neigh = $map->tile_path ($_)
607	$_->cancel for Event::all_watchers;	1511	or next;
		1512	$neigh = find $neigh, $map
		1513	or next;
		1514	$neigh->load;
608		1515
609	# 2. unload all extensions	1516	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
610	for (@exts) {	1517	[$neigh->tile_path (($_ + 1) % 4), $neigh];
611	$msg->("unloading <$_>");	1518	}
612	unload_extension $_;
613	}
614		1519
615	# 3. unload all modules loaded from $LIBDIR	1520	for (@diag) {
616	while (my ($k, $v) = each %INC) {	1521	my $neigh = find @$_
617	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1522	or next;
		1523	$neigh->load;
		1524	}
		1525	}
618		1526
619	$msg->("removing <$k>");	1527	sub find_sync {
620	delete $INC{$k};	1528	my ($path, $origin) = @_;
621		1529
622	$k =~ s/\.pm$//;	1530	cf::sync_job { find $path, $origin }
623	$k =~ s/\//::/g;	1531	}
624		1532
625	if (my $cb = $k->can ("unload_module")) {	1533	sub do_load_sync {
626	$cb->();	1534	my ($map) = @_;
		1535
		1536	cf::sync_job { $map->load };
		1537	}
		1538
		1539	our %MAP_PREFETCH;
		1540	our $MAP_PREFETCHER = undef;
		1541
		1542	sub find_async {
		1543	my ($path, $origin) = @_;
		1544
		1545	$path = normalise $path, $origin && $origin->{path};
		1546
		1547	if (my $map = $cf::MAP{$path}) {
		1548	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1549	}
		1550
		1551	undef $MAP_PREFETCH{$path};
		1552	$MAP_PREFETCHER ||= cf::async {
		1553	while (%MAP_PREFETCH) {
		1554	for my $path (keys %MAP_PREFETCH) {
		1555	my $map = find $path
		1556	or next;
		1557	$map->load;
		1558
		1559	delete $MAP_PREFETCH{$path};
627	}	1560	}
628
629	Symbol::delete_package $k;
630	}
631
632	# 4. get rid of safe::, as good as possible
633	Symbol::delete_package "safe::$_"
634	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
635
636	# 5. remove register_script_function callbacks
637	# TODO
638		1561	}
639	# 6. unload cf.pm "a bit"	1562	undef $MAP_PREFETCHER;
640	delete $INC{"cf.pm"};
641
642	# don't, removes xs symbols, too,
643	# and global variables created in xs
644	#Symbol::delete_package __PACKAGE__;
645
646	# 7. reload cf.pm
647	$msg->("reloading cf.pm");
648	require cf;
649	};	1563	};
650	$msg->($@) if $@;	1564	$MAP_PREFETCHER->prio (6);
651		1565
652	$msg->("reloaded");	1566	()
653	};	1567	}
654		1568
655	sub perl_reload() {	1569	sub save {
656	_perl_reload {	1570	my ($self) = @_;
657	warn $_[0];	1571
658	print "$_[0]\n";	1572	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1573
		1574	$self->{last_save} = $cf::RUNTIME;
		1575
		1576	return unless $self->dirty;
		1577
		1578	my $save = $self->save_path; utf8::encode $save;
		1579	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1580
		1581	$self->{load_path} = $save;
		1582
		1583	return if $self->{deny_save};
		1584
		1585	local $self->{last_access} = $self->last_access;#d#
		1586
		1587	cf::async {
		1588	$_->contr->save for $self->players;
659	};	1589	};
660	}
661		1590
662	register_command "perl-reload", 0, sub {	1591	if ($uniq) {
663	my ($who, $arg) = @_;	1592	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
664		1593	$self->_save_objects ($uniq, cf::IO_UNIQUES);
665	if ($who->flag (FLAG_WIZ)) {
666	_perl_reload {
667	warn $_[0];
668	$who->message ($_[0]);
669	};
670	}
671	};
672
673	#############################################################################
674	# extcmd framework, basically convert ext <msg>
675	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
676
677	attach_to_players
678	on_extcmd => sub {
679	my ($pl, $buf) = @_;
680
681	my $msg = eval { from_json $buf };
682
683	if (ref $msg) {
684	if (my $cb = $extcmd{$msg->{msgtype}}) {
685	if (my %reply = $cb->[0]->($pl, $msg)) {
686	$pl->ext_reply ($msg->{msgid}, %reply);
687	}
688	}
689	} else {	1594	} else {
690	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1595	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
691	}
692
693	cf::override;
694	},	1596	}
695	;	1597	}
696		1598
697	#############################################################################	1599	sub swap_out {
698	# load/save/clean perl data associated with a map
699
700	*cf::mapsupport::on_clean = sub {
701	my ($map) = @_;	1600	my ($self) = @_;
702		1601
703	my $path = $map->tmpname;	1602	# save first because save cedes
704	defined $path or return;	1603	$self->save;
705		1604
706	unlink "$path.pst";	1605	my $lock = cf::lock_acquire "map_data:" . $self->path;
707	};
708		1606
709	# old style persistent data, TODO: remove #d#	1607	return if $self->players;
710	*cf::mapsupport::on_swapin =	1608	return if $self->in_memory != cf::MAP_IN_MEMORY;
711	*cf::mapsupport::on_load = sub {	1609	return if $self->{deny_save};
		1610
		1611	$self->clear;
		1612	$self->in_memory (cf::MAP_SWAPPED);
		1613	}
		1614
		1615	sub reset_at {
712	my ($map) = @_;	1616	my ($self) = @_;
713		1617
714	my $path = $map->tmpname;	1618	# TODO: safety, remove and allow resettable per-player maps
715	$path = $map->path unless defined $path;	1619	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1620	return 1e99 if $self->{deny_reset};
716		1621
717	open my $fh, "<:raw", "$path.cfperl"	1622	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
718	or return; # no perl data	1623	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
719		1624
720	my $data = Storable::thaw do { local $/; <$fh> };	1625	$time + $to
721
722	$data->{version} <= 1
723	or return; # too new
724
725	$map->_set_obs ($data->{obs});
726	$map->invoke (EVENT_MAP_UPGRADE);
727	};
728
729	attach_to_maps prio => -10000, package => cf::mapsupport::;
730
731	#############################################################################
732	# load/save perl data associated with player->ob objects
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}	1626	}
737		1627
738	attach_to_players	1628	sub should_reset {
739	on_load => sub {	1629	my ($self) = @_;
740	my ($pl, $path) = @_;
741		1630
742	for my $o (all_objects $pl->ob) {	1631	$self->reset_at <= $cf::RUNTIME
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1632	}
744	$o->set_ob_key_value ("_perl_data");
745		1633
746	%$o = %{ Storable::thaw pack "H*", $value };	1634	sub reset {
747	}	1635	my ($self) = @_;
748	}	1636
		1637	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1638
		1639	return if $self->players;
		1640	return if $self->isa ("ext::map_per_player");#d#
		1641
		1642	warn "resetting map ", $self->path;#d#
		1643
		1644	$self->in_memory (cf::MAP_SWAPPED);
		1645
		1646	# need to save uniques path
		1647	unless ($self->{deny_save}) {
		1648	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1649
		1650	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1651	if $uniq;
749	},	1652	}
750	;
751		1653
752	#############################################################################	1654	delete $cf::MAP{$self->path};
753	# core extensions - in perl
754		1655
755	=item cf::player::exists $login	1656	$self->clear;
756		1657
757	Returns true when the given account exists.	1658	$_->clear_links_to ($self) for values %cf::MAP;
758		1659
759	=cut	1660	$self->unlink_save;
760		1661	$self->destroy;
761	sub cf::player::exists($) {
762	cf::player::find $_[0]
763	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
764	}	1662	}
765		1663
		1664	my $nuke_counter = "aaaa";
		1665
		1666	sub nuke {
		1667	my ($self) = @_;
		1668
		1669	delete $cf::MAP{$self->path};
		1670
		1671	$self->unlink_save;
		1672
		1673	bless $self, "cf::map";
		1674	delete $self->{deny_reset};
		1675	$self->{deny_save} = 1;
		1676	$self->reset_timeout (1);
		1677	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1678
		1679	$cf::MAP{$self->path} = $self;
		1680
		1681	$self->reset; # polite request, might not happen
		1682	}
		1683
		1684	=item cf::map::unique_maps
		1685
		1686	Returns an arrayref of paths of all shared maps that have
		1687	instantiated unique items. May block.
		1688
		1689	=cut
		1690
		1691	sub unique_maps() {
		1692	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1693	or return;
		1694
		1695	my @paths;
		1696
		1697	for (@$files) {
		1698	utf8::decode $_;
		1699	next if /\.pst$/;
		1700	next unless /^$PATH_SEP/o;
		1701
		1702	push @paths, cf::map::normalise $_;
		1703	}
		1704
		1705	\@paths
		1706	}
		1707
		1708	package cf;
		1709
		1710	=back
		1711
		1712	=head3 cf::object
		1713
		1714	=cut
		1715
		1716	package cf::object;
		1717
		1718	=over 4
		1719
		1720	=item $ob->inv_recursive
		1721
		1722	Returns the inventory of the object _and_ their inventories, recursively.
		1723
		1724	=cut
		1725
		1726	sub inv_recursive_;
		1727	sub inv_recursive_ {
		1728	map { $_, inv_recursive_ $_->inv } @_
		1729	}
		1730
		1731	sub inv_recursive {
		1732	inv_recursive_ inv $_[0]
		1733	}
		1734
		1735	package cf;
		1736
		1737	=back
		1738
		1739	=head3 cf::object::player
		1740
		1741	=over 4
		1742
766	=item $player->reply ($npc, $msg[, $flags])	1743	=item $player_object->reply ($npc, $msg[, $flags])
767		1744
768	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1745	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
769	can be C<undef>. Does the right thing when the player is currently in a	1746	can be C<undef>. Does the right thing when the player is currently in a
770	dialogue with the given NPC character.	1747	dialogue with the given NPC character.
771		1748
772	=cut	1749	=cut
773		1750
774	# rough implementation of a future "reply" method that works	1751	# rough implementation of a future "reply" method that works
775	# with dialog boxes.	1752	# with dialog boxes.
		1753	#TODO: the first argument must go, split into a $npc->reply_to ( method
776	sub cf::object::player::reply($$$;$) {	1754	sub cf::object::player::reply($$$;$) {
777	my ($self, $npc, $msg, $flags) = @_;	1755	my ($self, $npc, $msg, $flags) = @_;
778		1756
779	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1757	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
780		1758
…		…
784	$msg = $npc->name . " says: $msg" if $npc;	1762	$msg = $npc->name . " says: $msg" if $npc;
785	$self->message ($msg, $flags);	1763	$self->message ($msg, $flags);
786	}	1764	}
787	}	1765	}
788		1766
789	=item $player->ext_reply ($msgid, $msgtype, %msg)	1767	=item $player_object->may ("access")
790		1768
791	Sends an ext reply to the player.	1769	Returns wether the given player is authorized to access resource "access"
		1770	(e.g. "command_wizcast").
792		1771
793	=cut	1772	=cut
794		1773
795	sub cf::player::ext_reply($$$%) {	1774	sub cf::object::player::may {
		1775	my ($self, $access) = @_;
		1776
		1777	$self->flag (cf::FLAG_WIZ) ||
		1778	(ref $cf::CFG{"may_$access"}
		1779	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1780	: $cf::CFG{"may_$access"})
		1781	}
		1782
		1783	=item $player_object->enter_link
		1784
		1785	Freezes the player and moves him/her to a special map (C<{link}>).
		1786
		1787	The player should be reasonably safe there for short amounts of time. You
		1788	I<MUST> call C<leave_link> as soon as possible, though.
		1789
		1790	Will never block.
		1791
		1792	=item $player_object->leave_link ($map, $x, $y)
		1793
		1794	Moves the player out of the special C<{link}> map onto the specified
		1795	map. If the map is not valid (or omitted), the player will be moved back
		1796	to the location he/she was before the call to C<enter_link>, or, if that
		1797	fails, to the emergency map position.
		1798
		1799	Might block.
		1800
		1801	=cut
		1802
		1803	sub link_map {
		1804	unless ($LINK_MAP) {
		1805	$LINK_MAP = cf::map::find "{link}"
		1806	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1807	$LINK_MAP->load;
		1808	}
		1809
		1810	$LINK_MAP
		1811	}
		1812
		1813	sub cf::object::player::enter_link {
		1814	my ($self) = @_;
		1815
		1816	$self->deactivate_recursive;
		1817
		1818	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1819
		1820	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1821	if $self->map;
		1822
		1823	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1824	}
		1825
		1826	sub cf::object::player::leave_link {
		1827	my ($self, $map, $x, $y) = @_;
		1828
		1829	my $link_pos = delete $self->{_link_pos};
		1830
		1831	unless ($map) {
		1832	# restore original map position
		1833	($map, $x, $y) = @{ $link_pos || [] };
		1834	$map = cf::map::find $map;
		1835
		1836	unless ($map) {
		1837	($map, $x, $y) = @$EMERGENCY_POSITION;
		1838	$map = cf::map::find $map
		1839	or die "FATAL: cannot load emergency map\n";
		1840	}
		1841	}
		1842
		1843	($x, $y) = (-1, -1)
		1844	unless (defined $x) && (defined $y);
		1845
		1846	# use -1 or undef as default coordinates, not 0, 0
		1847	($x, $y) = ($map->enter_x, $map->enter_y)
		1848	if $x <=0 && $y <= 0;
		1849
		1850	$map->load;
		1851	$map->load_diag;
		1852
		1853	return unless $self->contr->active;
		1854	$self->activate_recursive;
		1855
		1856	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1857	$self->enter_map ($map, $x, $y);
		1858	}
		1859
		1860	cf::player->attach (
		1861	on_logout => sub {
		1862	my ($pl) = @_;
		1863
		1864	# abort map switching before logout
		1865	if ($pl->ob->{_link_pos}) {
		1866	cf::sync_job {
		1867	$pl->ob->leave_link
		1868	};
		1869	}
		1870	},
		1871	on_login => sub {
		1872	my ($pl) = @_;
		1873
		1874	# try to abort aborted map switching on player login :)
		1875	# should happen only on crashes
		1876	if ($pl->ob->{_link_pos}) {
		1877	$pl->ob->enter_link;
		1878	(async {
		1879	$pl->ob->reply (undef,
		1880	"There was an internal problem at your last logout, "
		1881	. "the server will try to bring you to your intended destination in a second.",
		1882	cf::NDI_RED);
		1883	# we need this sleep as the login has a concurrent enter_exit running
		1884	# and this sleep increases chances of the player not ending up in scorn
		1885	Coro::Timer::sleep 1;
		1886	$pl->ob->leave_link;
		1887	})->prio (2);
		1888	}
		1889	},
		1890	);
		1891
		1892	=item $player_object->goto ($path, $x, $y)
		1893
		1894	=cut
		1895
		1896	sub cf::object::player::goto {
		1897	my ($self, $path, $x, $y) = @_;
		1898
		1899	$self->enter_link;
		1900
		1901	(async {
		1902	my $map = eval {
		1903	my $map = cf::map::find $path;
		1904	$map = $map->customise_for ($self) if $map;
		1905	$map
		1906	} or
		1907	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1908
		1909	$self->leave_link ($map, $x, $y);
		1910	})->prio (1);
		1911	}
		1912
		1913	=item $player_object->enter_exit ($exit_object)
		1914
		1915	=cut
		1916
		1917	sub parse_random_map_params {
		1918	my ($spec) = @_;
		1919
		1920	my $rmp = { # defaults
		1921	xsize => (cf::rndm 15, 40),
		1922	ysize => (cf::rndm 15, 40),
		1923	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1924	#layout => string,
		1925	};
		1926
		1927	for (split /\n/, $spec) {
		1928	my ($k, $v) = split /\s+/, $_, 2;
		1929
		1930	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1931	}
		1932
		1933	$rmp
		1934	}
		1935
		1936	sub prepare_random_map {
		1937	my ($exit) = @_;
		1938
		1939	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1940
		1941	# all this does is basically replace the /! path by
		1942	# a new random map path (?random/...) with a seed
		1943	# that depends on the exit object
		1944
		1945	my $rmp = parse_random_map_params $exit->msg;
		1946
		1947	if ($exit->map) {
		1948	$rmp->{region} = $exit->region->name;
		1949	$rmp->{origin_map} = $exit->map->path;
		1950	$rmp->{origin_x} = $exit->x;
		1951	$rmp->{origin_y} = $exit->y;
		1952	}
		1953
		1954	$rmp->{random_seed} ||= $exit->random_seed;
		1955
		1956	my $data = cf::to_json $rmp;
		1957	my $md5 = Digest::MD5::md5_hex $data;
		1958	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1959
		1960	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1961	aio_write $fh, 0, (length $data), $data, 0;
		1962	undef $fh;
		1963	aio_rename "$meta~", $meta;
		1964
		1965	$exit->slaying ("?random/$md5");
		1966	$exit->msg (undef);
		1967	}
		1968	}
		1969
		1970	sub cf::object::player::enter_exit {
		1971	my ($self, $exit) = @_;
		1972
		1973	return unless $self->type == cf::PLAYER;
		1974
		1975	if ($exit->slaying eq "/!") {
		1976	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1977	# the problem is that $exit might not survive long enough
		1978	# so it needs to be done right now, right here
		1979	cf::sync_job { prepare_random_map $exit };
		1980	}
		1981
		1982	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1983	my $hp = $exit->stats->hp;
		1984	my $sp = $exit->stats->sp;
		1985
		1986	$self->enter_link;
		1987
		1988	(async {
		1989	$self->deactivate_recursive; # just to be sure
		1990	unless (eval {
		1991	$self->goto ($slaying, $hp, $sp);
		1992
		1993	1;
		1994	}) {
		1995	$self->message ("Something went wrong deep within the crossfire server. "
		1996	. "I'll try to bring you back to the map you were before. "
		1997	. "Please report this to the dungeon master!",
		1998	cf::NDI_UNIQUE | cf::NDI_RED);
		1999
		2000	warn "ERROR in enter_exit: $@";
		2001	$self->leave_link;
		2002	}
		2003	})->prio (1);
		2004	}
		2005
		2006	=head3 cf::client
		2007
		2008	=over 4
		2009
		2010	=item $client->send_drawinfo ($text, $flags)
		2011
		2012	Sends a drawinfo packet to the client. Circumvents output buffering so
		2013	should not be used under normal circumstances.
		2014
		2015	=cut
		2016
		2017	sub cf::client::send_drawinfo {
		2018	my ($self, $text, $flags) = @_;
		2019
		2020	utf8::encode $text;
		2021	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2022	}
		2023
		2024	=item $client->ext_event ($type, %msg)
		2025
		2026	Sends an exti event to the client.
		2027
		2028	=cut
		2029
		2030	sub cf::client::ext_event($$%) {
796	my ($self, $id, %msg) = @_;	2031	my ($self, $type, %msg) = @_;
797		2032
798	$msg{msgid} = $id;	2033	$msg{msgtype} = "event_$type";
799
800	$self->send ("ext " . to_json \%msg);	2034	$self->send_packet ("ext " . cf::to_json \%msg);
801	}	2035	}
802		2036
803	#############################################################################	2037	=item $success = $client->query ($flags, "text", \&cb)
804	# map scripting support	2038
		2039	Queues a query to the client, calling the given callback with
		2040	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2041	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2042
		2043	Queries can fail, so check the return code. Or don't, as queries will become
		2044	reliable at some point in the future.
		2045
		2046	=cut
		2047
		2048	sub cf::client::query {
		2049	my ($self, $flags, $text, $cb) = @_;
		2050
		2051	return unless $self->state == ST_PLAYING
		2052	|| $self->state == ST_SETUP
		2053	|| $self->state == ST_CUSTOM;
		2054
		2055	$self->state (ST_CUSTOM);
		2056
		2057	utf8::encode $text;
		2058	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2059
		2060	$self->send_packet ($self->{query_queue}[0][0])
		2061	if @{ $self->{query_queue} } == 1;
		2062	}
		2063
		2064	cf::client->attach (
		2065	on_reply => sub {
		2066	my ($ns, $msg) = @_;
		2067
		2068	# this weird shuffling is so that direct followup queries
		2069	# get handled first
		2070	my $queue = delete $ns->{query_queue}
		2071	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2072
		2073	(shift @$queue)->[1]->($msg);
		2074	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2075
		2076	push @{ $ns->{query_queue} }, @$queue;
		2077
		2078	if (@{ $ns->{query_queue} } == @$queue) {
		2079	if (@$queue) {
		2080	$ns->send_packet ($ns->{query_queue}[0][0]);
		2081	} else {
		2082	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2083	}
		2084	}
		2085	},
		2086	);
		2087
		2088	=item $client->async (\&cb)
		2089
		2090	Create a new coroutine, running the specified callback. The coroutine will
		2091	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2092	or loss of connection).
		2093
		2094	=cut
		2095
		2096	sub cf::client::async {
		2097	my ($self, $cb) = @_;
		2098
		2099	my $coro = &Coro::async ($cb);
		2100
		2101	$coro->on_destroy (sub {
		2102	delete $self->{_coro}{$coro+0};
		2103	});
		2104
		2105	$self->{_coro}{$coro+0} = $coro;
		2106
		2107	$coro
		2108	}
		2109
		2110	cf::client->attach (
		2111	on_destroy => sub {
		2112	my ($ns) = @_;
		2113
		2114	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2115	},
		2116	);
		2117
		2118	=back
		2119
		2120
		2121	=head2 SAFE SCRIPTING
		2122
		2123	Functions that provide a safe environment to compile and execute
		2124	snippets of perl code without them endangering the safety of the server
		2125	itself. Looping constructs, I/O operators and other built-in functionality
		2126	is not available in the safe scripting environment, and the number of
		2127	functions and methods that can be called is greatly reduced.
		2128
		2129	=cut
805		2130
806	our $safe = new Safe "safe";	2131	our $safe = new Safe "safe";
807	our $safe_hole = new Safe::Hole;	2132	our $safe_hole = new Safe::Hole;
808		2133
809	$SIG{FPE} = 'IGNORE';	2134	$SIG{FPE} = 'IGNORE';
810		2135
811	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2136	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
812		2137
813	# here we export the classes and methods available to script code	2138	# here we export the classes and methods available to script code
814		2139
		2140	=pod
		2141
		2142	The following functions and methods are available within a safe environment:
		2143
		2144	cf::object contr pay_amount pay_player map
		2145	cf::object::player player
		2146	cf::player peaceful
		2147	cf::map trigger
		2148
		2149	=cut
		2150
815	for (	2151	for (
816	["cf::object" => qw(contr pay_amount pay_player)],	2152	["cf::object" => qw(contr pay_amount pay_player map)],
817	["cf::object::player" => qw(player)],	2153	["cf::object::player" => qw(player)],
818	["cf::player" => qw(peaceful)],	2154	["cf::player" => qw(peaceful)],
		2155	["cf::map" => qw(trigger)],
819	) {	2156	) {
820	no strict 'refs';	2157	no strict 'refs';
821	my ($pkg, @funs) = @$_;	2158	my ($pkg, @funs) = @$_;
822	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2159	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
823	for @funs;	2160	for @funs;
824	}	2161	}
		2162
		2163	=over 4
		2164
		2165	=item @retval = safe_eval $code, [var => value, ...]
		2166
		2167	Compiled and executes the given perl code snippet. additional var/value
		2168	pairs result in temporary local (my) scalar variables of the given name
		2169	that are available in the code snippet. Example:
		2170
		2171	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2172
		2173	=cut
825		2174
826	sub safe_eval($;@) {	2175	sub safe_eval($;@) {
827	my ($code, %vars) = @_;	2176	my ($code, %vars) = @_;
828		2177
829	my $qcode = $code;	2178	my $qcode = $code;
…		…
852	}	2201	}
853		2202
854	wantarray ? @res : $res[0]	2203	wantarray ? @res : $res[0]
855	}	2204	}
856		2205
		2206	=item cf::register_script_function $function => $cb
		2207
		2208	Register a function that can be called from within map/npc scripts. The
		2209	function should be reasonably secure and should be put into a package name
		2210	like the extension.
		2211
		2212	Example: register a function that gets called whenever a map script calls
		2213	C<rent::overview>, as used by the C<rent> extension.
		2214
		2215	cf::register_script_function "rent::overview" => sub {
		2216	...
		2217	};
		2218
		2219	=cut
		2220
857	sub register_script_function {	2221	sub register_script_function {
858	my ($fun, $cb) = @_;	2222	my ($fun, $cb) = @_;
859		2223
860	no strict 'refs';	2224	no strict 'refs';
861	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2225	*{"safe::$fun"} = $safe_hole->wrap ($cb);
862	}	2226	}
863		2227
		2228	=back
		2229
		2230	=cut
		2231
864	#############################################################################	2232	#############################################################################
865	# the server's main()	2233
		2234	=head2 EXTENSION DATABASE SUPPORT
		2235
		2236	Crossfire maintains a very simple database for extension use. It can
		2237	currently store anything that can be serialised using Storable, which
		2238	excludes objects.
		2239
		2240	The parameter C<$family> should best start with the name of the extension
		2241	using it, it should be unique.
		2242
		2243	=over 4
		2244
		2245	=item $value = cf::db_get $family => $key
		2246
		2247	Returns a single value from the database.
		2248
		2249	=item cf::db_put $family => $key => $value
		2250
		2251	Stores the given C<$value> in the family.
		2252
		2253	=cut
		2254
		2255	our $DB;
		2256
		2257	sub db_init {
		2258	unless ($DB) {
		2259	$DB = BDB::db_create $DB_ENV;
		2260
		2261	cf::sync_job {
		2262	eval {
		2263	$DB->set_flags (BDB::CHKSUM);
		2264
		2265	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2266	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2267	cf::cleanup "db_open(db): $!" if $!;
		2268	};
		2269	cf::cleanup "db_open(db): $@" if $@;
		2270	};
		2271
		2272	my $path = cf::localdir . "/database.pst";
		2273	if (stat $path) {
		2274	cf::sync_job {
		2275	my $pst = Storable::retrieve $path;
		2276
		2277	cf::db_put (board => data => $pst->{board});
		2278	cf::db_put (guildrules => data => $pst->{guildrules});
		2279	cf::db_put (rent => balance => $pst->{rent}{balance});
		2280	BDB::db_env_txn_checkpoint $DB_ENV;
		2281
		2282	unlink $path;
		2283	};
		2284	}
		2285	}
		2286	}
		2287
		2288	sub db_get($$) {
		2289	my $key = "$_[0]/$_[1]";
		2290
		2291	cf::sync_job {
		2292	BDB::db_get $DB, undef, $key, my $data;
		2293
		2294	$! ? ()
		2295	: Compress::LZF::sthaw $data
		2296	}
		2297	}
		2298
		2299	sub db_put($$$) {
		2300	BDB::dbreq_pri 4;
		2301	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2302	}
		2303
		2304	#############################################################################
		2305	# the server's init and main functions
		2306
		2307	sub load_facedata {
		2308	my $path = sprintf "%s/facedata", cf::datadir;
		2309
		2310	warn "loading facedata from $path\n";
		2311
		2312	my $faces;
		2313	0 < aio_load $path, $faces
		2314	or die "$path: $!";
		2315
		2316	Coro::cede;
		2317	$faces = Storable::thaw $faces;
		2318	Coro::cede;
		2319
		2320	my $meta = delete $faces->{""};
		2321	$meta->{version} == 1
		2322	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2323
		2324	while (my ($face, $info) = each %$faces) {
		2325	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2326	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2327	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2328	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2329	Coro::cede;
		2330	}
		2331
		2332	while (my ($face, $info) = each %$faces) {
		2333	next unless $info->{smooth};
		2334	my $idx = cf::face::find $face
		2335	or next;
		2336	if (my $smooth = cf::face::find $info->{smooth}) {
		2337	cf::face::set_smooth $idx, $smooth;
		2338	} else {
		2339	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2340	}
		2341	Coro::cede;
		2342	}
		2343
		2344	1
		2345	}
		2346
		2347	sub reload_resources {
		2348	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2349	or die "unable to load regions file\n";#d#
		2350	load_facedata
		2351	or die "unable to load facedata\n";#d#
		2352	}
		2353
		2354	sub init {
		2355	reload_resources;
		2356	}
		2357
		2358	sub cfg_load {
		2359	open my $fh, "<:utf8", cf::confdir . "/config"
		2360	or return;
		2361
		2362	local $/;
		2363	*CFG = YAML::Syck::Load <$fh>;
		2364
		2365	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2366
		2367	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2368	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2369
		2370	if (exists $CFG{mlockall}) {
		2371	eval {
		2372	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2373	and die "WARNING: m(un)lockall failed: $!\n";
		2374	};
		2375	warn $@ if $@;
		2376	}
		2377	}
866		2378
867	sub main {	2379	sub main {
		2380	# we must not ever block the main coroutine
		2381	local $Coro::idle = sub {
		2382	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2383	(async {
		2384	Event::one_event;
		2385	})->prio (Coro::PRIO_MAX);
		2386	};
		2387
		2388	cfg_load;
		2389	db_init;
		2390	load_extensions;
		2391
		2392	$TICK_WATCHER->start;
868	Event::loop;	2393	Event::loop;
869	}	2394	}
870		2395
871	#############################################################################	2396	#############################################################################
872	# initialisation	2397	# initialisation and cleanup
873		2398
874	register "<global>", __PACKAGE__;	2399	# install some emergency cleanup handlers
		2400	BEGIN {
		2401	for my $signal (qw(INT HUP TERM)) {
		2402	Event->signal (
		2403	reentrant => 0,
		2404	data => WF_AUTOCANCEL,
		2405	signal => $signal,
		2406	prio => 0,
		2407	cb => sub {
		2408	cf::cleanup "SIG$signal";
		2409	},
		2410	);
		2411	}
		2412	}
		2413
		2414	sub emergency_save() {
		2415	my $freeze_guard = cf::freeze_mainloop;
		2416
		2417	warn "enter emergency perl save\n";
		2418
		2419	cf::sync_job {
		2420	# use a peculiar iteration method to avoid tripping on perl
		2421	# refcount bugs in for. also avoids problems with players
		2422	# and maps saved/destroyed asynchronously.
		2423	warn "begin emergency player save\n";
		2424	for my $login (keys %cf::PLAYER) {
		2425	my $pl = $cf::PLAYER{$login} or next;
		2426	$pl->valid or next;
		2427	$pl->save;
		2428	}
		2429	warn "end emergency player save\n";
		2430
		2431	warn "begin emergency map save\n";
		2432	for my $path (keys %cf::MAP) {
		2433	my $map = $cf::MAP{$path} or next;
		2434	$map->valid or next;
		2435	$map->save;
		2436	}
		2437	warn "end emergency map save\n";
		2438
		2439	warn "begin emergency database checkpoint\n";
		2440	BDB::db_env_txn_checkpoint $DB_ENV;
		2441	warn "end emergency database checkpoint\n";
		2442	};
		2443
		2444	warn "leave emergency perl save\n";
		2445	}
		2446
		2447	sub post_cleanup {
		2448	my ($make_core) = @_;
		2449
		2450	warn Carp::longmess "post_cleanup backtrace"
		2451	if $make_core;
		2452	}
		2453
		2454	sub reload() {
		2455	# can/must only be called in main
		2456	if ($Coro::current != $Coro::main) {
		2457	warn "can only reload from main coroutine";
		2458	return;
		2459	}
		2460
		2461	warn "reloading...";
		2462
		2463	warn "entering sync_job";
		2464
		2465	cf::sync_job {
		2466	cf::write_runtime; # external watchdog should not bark
		2467	cf::emergency_save;
		2468	cf::write_runtime; # external watchdog should not bark
		2469
		2470	warn "syncing database to disk";
		2471	BDB::db_env_txn_checkpoint $DB_ENV;
		2472
		2473	# if anything goes wrong in here, we should simply crash as we already saved
		2474
		2475	warn "cancelling all WF_AUTOCANCEL watchers";
		2476	for (Event::all_watchers) {
		2477	$_->cancel if $_->data & WF_AUTOCANCEL;
		2478	}
		2479
		2480	warn "flushing outstanding aio requests";
		2481	for (;;) {
		2482	BDB::flush;
		2483	IO::AIO::flush;
		2484	Coro::cede;
		2485	last unless IO::AIO::nreqs || BDB::nreqs;
		2486	warn "iterate...";
		2487	}
		2488
		2489	++$RELOAD;
		2490
		2491	warn "cancelling all extension coros";
		2492	$_->cancel for values %EXT_CORO;
		2493	%EXT_CORO = ();
		2494
		2495	warn "removing commands";
		2496	%COMMAND = ();
		2497
		2498	warn "removing ext commands";
		2499	%EXTCMD = ();
		2500
		2501	warn "unloading/nuking all extensions";
		2502	for my $pkg (@EXTS) {
		2503	warn "... unloading $pkg";
		2504
		2505	if (my $cb = $pkg->can ("unload")) {
		2506	eval {
		2507	$cb->($pkg);
		2508	1
		2509	} or warn "$pkg unloaded, but with errors: $@";
		2510	}
		2511
		2512	warn "... nuking $pkg";
		2513	Symbol::delete_package $pkg;
		2514	}
		2515
		2516	warn "unloading all perl modules loaded from $LIBDIR";
		2517	while (my ($k, $v) = each %INC) {
		2518	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2519
		2520	warn "... unloading $k";
		2521	delete $INC{$k};
		2522
		2523	$k =~ s/\.pm$//;
		2524	$k =~ s/\//::/g;
		2525
		2526	if (my $cb = $k->can ("unload_module")) {
		2527	$cb->();
		2528	}
		2529
		2530	Symbol::delete_package $k;
		2531	}
		2532
		2533	warn "getting rid of safe::, as good as possible";
		2534	Symbol::delete_package "safe::$_"
		2535	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2536
		2537	warn "unloading cf.pm \"a bit\"";
		2538	delete $INC{"cf.pm"};
		2539
		2540	# don't, removes xs symbols, too,
		2541	# and global variables created in xs
		2542	#Symbol::delete_package __PACKAGE__;
		2543
		2544	warn "unload completed, starting to reload now";
		2545
		2546	warn "reloading cf.pm";
		2547	require cf;
		2548	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2549
		2550	warn "loading config and database again";
		2551	cf::cfg_load;
		2552
		2553	warn "loading extensions";
		2554	cf::load_extensions;
		2555
		2556	warn "reattaching attachments to objects/players";
		2557	_global_reattach; # objects, sockets
		2558	warn "reattaching attachments to maps";
		2559	reattach $_ for values %MAP;
		2560	warn "reattaching attachments to players";
		2561	reattach $_ for values %PLAYER;
		2562
		2563	warn "loading reloadable resources";
		2564	reload_resources;
		2565
		2566	warn "leaving sync_job";
		2567
		2568	1
		2569	} or do {
		2570	warn $@;
		2571	warn "error while reloading, exiting.";
		2572	exit 1;
		2573	};
		2574
		2575	warn "reloaded";
		2576	};
		2577
		2578	our $RELOAD_WATCHER; # used only during reload
		2579
		2580	register_command "reload" => sub {
		2581	my ($who, $arg) = @_;
		2582
		2583	if ($who->flag (FLAG_WIZ)) {
		2584	$who->message ("reloading server.");
		2585
		2586	# doing reload synchronously and two reloads happen back-to-back,
		2587	# coro crashes during coro_state_free->destroy here.
		2588
		2589	$RELOAD_WATCHER ||= Event->timer (
		2590	reentrant => 0,
		2591	after => 0,
		2592	data => WF_AUTOCANCEL,
		2593	cb => sub {
		2594	reload;
		2595	undef $RELOAD_WATCHER;
		2596	},
		2597	);
		2598	}
		2599	};
875		2600
876	unshift @INC, $LIBDIR;	2601	unshift @INC, $LIBDIR;
877		2602
878	load_extensions;	2603	my $bug_warning = 0;
879		2604
880	$TICK_WATCHER = Event->timer (	2605	$TICK_WATCHER = Event->timer (
		2606	reentrant => 0,
		2607	parked => 1,
881	prio => 1,	2608	prio => 0,
882	at => $NEXT_TICK || 1,	2609	at => $NEXT_TICK || $TICK,
		2610	data => WF_AUTOCANCEL,
883	cb => sub {	2611	cb => sub {
		2612	if ($Coro::current != $Coro::main) {
		2613	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2614	unless ++$bug_warning > 10;
		2615	return;
		2616	}
		2617
		2618	$NOW = Event::time;
		2619
884	cf::server_tick; # one server iteration	2620	cf::server_tick; # one server iteration
885		2621	$RUNTIME += $TICK;
886	my $NOW = Event::time;
887	$NEXT_TICK += $TICK;	2622	$NEXT_TICK += $TICK;
888		2623
		2624	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2625	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2626	Coro::async_pool {
		2627	write_runtime
		2628	or warn "ERROR: unable to write runtime file: $!";
		2629	};
		2630	}
		2631
		2632	$WAIT_FOR_TICK->broadcast;
		2633	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2634
		2635	# my $AFTER = Event::time;
		2636	# warn $AFTER - $NOW;#d#
		2637
889	# if we are delayed by four ticks, skip them all	2638	# if we are delayed by four ticks or more, skip them all
890	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2639	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
891		2640
892	$TICK_WATCHER->at ($NEXT_TICK);	2641	$TICK_WATCHER->at ($NEXT_TICK);
893	$TICK_WATCHER->start;	2642	$TICK_WATCHER->start;
894	},	2643	},
895	);	2644	);
896		2645
897	_reload_2;	2646	{
		2647	BDB::max_poll_time $TICK * 0.1;
		2648	$BDB_POLL_WATCHER = Event->io (
		2649	reentrant => 0,
		2650	fd => BDB::poll_fileno,
		2651	poll => 'r',
		2652	prio => 0,
		2653	data => WF_AUTOCANCEL,
		2654	cb => \&BDB::poll_cb,
		2655	);
		2656	BDB::min_parallel 8;
		2657
		2658	BDB::set_sync_prepare {
		2659	my $status;
		2660	my $current = $Coro::current;
		2661	(
		2662	sub {
		2663	$status = $!;
		2664	$current->ready; undef $current;
		2665	},
		2666	sub {
		2667	Coro::schedule while defined $current;
		2668	$! = $status;
		2669	},
		2670	)
		2671	};
		2672
		2673	unless ($DB_ENV) {
		2674	$DB_ENV = BDB::db_env_create;
		2675
		2676	cf::sync_job {
		2677	eval {
		2678	BDB::db_env_open
		2679	$DB_ENV,
		2680	$BDB_ENV_DIR,
		2681	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2682	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2683	0666;
		2684
		2685	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2686
		2687	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2688	$DB_ENV->set_lk_detect;
		2689	};
		2690
		2691	cf::cleanup "db_env_open(db): $@" if $@;
		2692	};
		2693	}
		2694	}
		2695
		2696	{
		2697	IO::AIO::min_parallel 8;
		2698
		2699	undef $Coro::AIO::WATCHER;
		2700	IO::AIO::max_poll_time $TICK * 0.1;
		2701	$AIO_POLL_WATCHER = Event->io (
		2702	reentrant => 0,
		2703	data => WF_AUTOCANCEL,
		2704	fd => IO::AIO::poll_fileno,
		2705	poll => 'r',
		2706	prio => 6,
		2707	cb => \&IO::AIO::poll_cb,
		2708	);
		2709	}
		2710
		2711	END { cf::emergency_save }
898		2712
899	1	2713	1
900		2714

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