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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.193 by root, Wed Jan 24 16:29:10 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 Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
26	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
		53
		54	our %CFG;
		55
		56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
		87
		88	#############################################################################
		89
		90	=head2 GLOBAL VARIABLES
		91
		92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
		102
		103	=item $cf::LIBDIR
		104
		105	The perl library directory, where extensions and cf-specific modules can
		106	be found. It will be added to C<@INC> automatically.
		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
		112	=item $cf::TICK
		113
		114	The interval between server ticks, in seconds.
		115
		116	=item %cf::CFG
		117
		118	Configuration for the server, loaded from C</etc/crossfire/config>, or
		119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
		127
		128	=back
		129
		130	=cut
27		131
28	BEGIN {	132	BEGIN {
29	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
31	$msg .= "\n"	137	$msg .= "\n"
32	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
33		139
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
36	};	141	};
37	}	142	}
38		143
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	148	@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';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		150
75	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	152	# 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)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
78	no strict 'refs';	160	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	162	}
81		163
82	$Event::DIED = sub {	164	$Event::DIED = sub {
83	warn "error in event callback: @_";	165	warn "error in event callback: @_";
84	};	166	};
85		167
86	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		169
92	#############################################################################	170	=over 4
93	# utility functions	171
		172	=item dumpval $ref
		173
		174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
94		194
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
96		202
97	sub from_json($) {	203	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	205	JSON::Syck::Load $_[0]
100	}	206	}
101		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
102	sub to_json($) {	214	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
105	}	217	}
106		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 90 + 10;
		355	# 10 is the runtime save interval, for a monotonic clock
		356	# 60 allows for the watchdog to kill the server.
		357
		358	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		359	and return;
		360
		361	aio_fsync $fh
		362	and return;
		363
		364	close $fh
		365	or return;
		366
		367	aio_rename "$runtime~", $runtime
		368	and return;
		369
		370	1
		371	}
		372
		373	=back
		374
		375	=cut
		376
107	#############################################################################	377	#############################################################################
108	# "new" plug-in system
109		378
		379	=head2 ATTACHABLE OBJECTS
		380
		381	Many objects in crossfire are so-called attachable objects. That means you can
		382	attach callbacks/event handlers (a collection of which is called an "attachment")
		383	to it. All such attachable objects support the following methods.
		384
		385	In the following description, CLASS can be any of C<global>, C<object>
		386	C<player>, C<client> or C<map> (i.e. the attachable objects in
		387	crossfire+).
		388
		389	=over 4
		390
110	=item $object->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
111		392
112	Attach a pre-registered attachment to an object.	393	=item $attachable->detach ($attachment)
113		394
114	=item $player->attach ($attachment, key => $value...)	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
115		397
116	Attach a pre-registered attachment to a player.	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
117		400
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	401	$obj->attach (minesweeper => width => 10, height => 10);
119		402
120	Attach a pre-registered attachment to a map.	403	=item $bool = $attachable->attached ($name)
121		404
122	=item cf::attach_global ...	405	Checks wether the named attachment is currently attached to the object.
123		406
124	Attach handlers for global events.	407	=item cf::CLASS->attach ...
125		408
126	This and all following C<attach_*>-functions expect any number of the	409	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	410
		411	Define an anonymous attachment and attach it to all objects of the given
		412	CLASS. See the next function for an explanation of its arguments.
		413
		414	You can attach to global events by using the C<cf::global> class.
		415
		416	Example, log all player logins:
		417
		418	cf::player->attach (
		419	on_login => sub {
		420	my ($pl) = @_;
		421	...
		422	},
		423	);
		424
		425	Example, attach to the jeweler skill:
		426
		427	cf::object->attach (
		428	type => cf::SKILL,
		429	subtype => cf::SK_JEWELER,
		430	on_use_skill => sub {
		431	my ($sk, $ob, $part, $dir, $msg) = @_;
		432	...
		433	},
		434	);
		435
		436	=item cf::CLASS::attachment $name, ...
		437
		438	Register an attachment by C<$name> through which attachable objects of the
		439	given CLASS can refer to this attachment.
		440
		441	Some classes such as crossfire maps and objects can specify attachments
		442	that are attached at load/instantiate time, thus the need for a name.
		443
		444	These calls expect any number of the following handler/hook descriptions:
128		445
129	=over 4	446	=over 4
130		447
131	=item prio => $number	448	=item prio => $number
132		449
…		…
134	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	452	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	453	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	454	unless you know what you are doing.
138		455
		456	=item type => $type
		457
		458	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		459	given type of objects only (the additional parameter C<subtype> can be
		460	used to further limit to the given subtype).
		461
139	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
140		463
141	Call the given code reference whenever the named event happens (event is	464	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	465	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	476	object/class are recognised.
154		477
155	=back	478	=back
156		479
157	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
158		482
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
161	type.	485	my ($self, $victim) = @_;
		486	...
		487	}
		488	}
162		489
163	=item cf::attach_to_objects ...	490	=item $attachable->valid
164		491
165	Attach handlers to all objects. Do not use this except for debugging or	492	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	493	C-level object still exists. If you try to access an object that has no
167	the game.	494	valid C counterpart anymore you get an exception at runtime. This method
168		495	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	496	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		497
179	=cut	498	=cut
180		499
181	# the following variables are defined in .xs and must not be re-created	500	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	501	our @CB_GLOBAL = (); # registry for all global events
		502	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	506	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	507	our @CB_MAP = ();
187		508
188	my %attachment;	509	my %attachment;
189		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
190	sub _attach_cb($\%$$$) {	517	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	518	my ($registry, $event, $prio, $cb) = @_;
192		519
193	use sort 'stable';	520	use sort 'stable';
194		521
195	$cb = [$prio, $cb];	522	$cb = [$prio, $cb];
196		523
197	@{$registry->[$event]} = sort	524	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	525	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	526	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		531
204	# attach handles attaching event callbacks	532	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	533	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	534	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	535	sub _attach {
208	my ($registry, $klass, @arg) = @_;	536	my ($registry, $klass, @arg) = @_;
209		537
		538	my $object_type;
210	my $prio = 0;	539	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	540	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		541
		542	#TODO: get rid of this hack
		543	if ($attachable_klass{$klass}) {
		544	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		545	}
218		546
219	while (@arg) {	547	while (@arg) {
220	my $type = shift @arg;	548	my $type = shift @arg;
221		549
222	if ($type eq "prio") {	550	if ($type eq "prio") {
223	$prio = shift @arg;	551	$prio = shift @arg;
224		552
		553	} elsif ($type eq "type") {
		554	$object_type = shift @arg;
		555	$registry = $CB_TYPE[$object_type] ||= [];
		556
		557	} elsif ($type eq "subtype") {
		558	defined $object_type or Carp::croak "subtype specified without type";
		559	my $object_subtype = shift @arg;
		560	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		561
225	} elsif ($type eq "package") {	562	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	563	my $pkg = shift @arg;
227		564
228	while (my ($name, $id) = each %cb_id) {	565	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	566	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	567	_attach_cb $registry, $id, $prio, $cb;
231	}	568	}
232	}	569	}
233		570
234	} elsif (exists $cb_id{$type}) {	571	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		573
237	} elsif (ref $type) {	574	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	575	warn "attaching objects not supported, ignoring.\n";
239		576
240	} else {	577	} else {
241	shift @arg;	578	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	579	warn "attach argument '$type' not supported, ignoring.\n";
243	}	580	}
244	}	581	}
245
246	\%undo
247	}	582	}
248		583
249	sub _attach_attachment {	584	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	585	my ($obj, $name, %arg) = @_;
251		586
252	my $res;	587	return if exists $obj->{_attachment}{$name};
253		588
254	if (my $attach = $attachment{$name}) {	589	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	590	my $registry = $obj->registry;
256		591
257	for (@$attach) {	592	for (@$attach) {
258	my ($klass, @attach) = @$_;	593	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	594	_attach $registry, $klass, @attach;
260	}	595	}
261		596
262	$obj->{$name} = \%arg;	597	$obj->{$name} = \%arg;
263	} else {	598	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	599	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	600	}
266		601
267	$obj->{_attachment}{$name} = undef;	602	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	603	}
272		604
273	sub cf::object::attach {	605	sub cf::attachable::attach {
		606	if (ref $_[0]) {
		607	_object_attach @_;
		608	} else {
		609	_attach shift->_attach_registry, @_;
		610	}
		611	};
		612
		613	# all those should be optimised
		614	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	615	my ($obj, $name) = @_;
275		616
276	_attach_attachment $obj, $name, %arg;	617	if (ref $obj) {
277	}	618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
278		624
279	sub cf::player::attach {	625	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	626	my ($obj, $name) = @_;
281		627
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	628	exists $obj->{_attachment}{$name}
283	}	629	}
284		630
285	sub cf::map::attach {	631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
287		636
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	637	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	638	my \$name = shift;
316		639
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
318	}	644	}
319		645
320	our $override;	646	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		648
…		…
336	for (@$callbacks) {	662	for (@$callbacks) {
337	eval { &{$_->[1]} };	663	eval { &{$_->[1]} };
338		664
339	if ($@) {	665	if ($@) {
340	warn "$@";	666	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	668	override;
343	}	669	}
344		670
345	return 1 if $override;	671	return 1 if $override;
346	}	672	}
347		673
348	0	674	0
349	}	675	}
		676
		677	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		678
		679	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		680
		681	Generate an object-specific event with the given arguments.
		682
		683	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		684	removed in future versions), and there is no public API to access override
		685	results (if you must, access C<@cf::invoke_results> directly).
		686
		687	=back
		688
		689	=cut
350		690
351	#############################################################################	691	#############################################################################
352	# object support	692	# object support
353		693
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
369	my $registry = $obj->registry;	700	my $registry = $obj->registry;
370		701
371	@$registry = ();	702	@$registry = ();
372		703
373	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		705
375	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	708	for (@$attach) {
378	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
380	}	711	}
381	} else {	712	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	714	}
384	}	715	}
385	}	716	}
386		717
387	sub object_freezer_save {	718	cf::attachable->attach (
388	my ($filename, $objs) = @_;
389
390	if (@$objs) {
391	open my $fh, ">:raw", "$filename.pst~";
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;
394	chmod SAVE_MODE, "$filename.pst~";
395	rename "$filename.pst~", "$filename.pst";
396	} else {
397	unlink "$filename.pst";
398	}
399
400	chmod SAVE_MODE, "$filename~";
401	rename "$filename~", $filename;
402	}
403
404	sub object_thawer_load {
405	my ($filename) = @_;
406
407	open my $fh, "<:raw:perlio", "$filename.pst"
408	or return;
409
410	eval { local $/; (Storable::thaw <$fh>)->{objs} }
411	}
412
413	attach_to_objects
414	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
415	on_clone => sub {	732	on_clone => sub {
416	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
417		734
418	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
419		736
420	%$dst = %$src;	737	%$dst = %$src;
421		738
422	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
423	if exists $src->{_attachment};	740	if exists $src->{_attachment};
424	},	741	},
425	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
		751
		752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		753	chmod SAVE_MODE, $fh;
		754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		755	aio_fsync $fh;
		756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
		771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
		775	} else {
		776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
		779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
		788	}
		789
		790	sub object_thawer_load {
		791	my ($filename) = @_;
		792
		793	my ($data, $av);
		794
		795	(aio_load $filename, $data) >= 0
		796	or return;
		797
		798	unless (aio_stat "$filename.pst") {
		799	(aio_load "$filename.pst", $av) >= 0
		800	or return;
		801	$av = eval { (Storable::thaw $av)->{objs} };
		802	}
		803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
426		808
427	#############################################################################	809	#############################################################################
428	# old plug-in events	810	# command handling &c
429		811
430	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
431	my $extension = shift;
432	my $event_code = shift;
433		813
434	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
435	or return;	815	$name.
436		816
437	&$cb	817	=cut
438	}
439
440	sub inject_global_event {
441	my $event = shift;
442
443	my $cb = $hook[$event]
444	or return;
445
446	List::Util::max map &$_, values %$cb
447	}
448
449	sub inject_command {
450	my ($name, $obj, $params) = @_;
451
452	for my $cmd (@{ $command{$name} }) {
453	$cmd->[1]->($obj, $params);
454	}
455
456	-1
457	}
458		818
459	sub register_command {	819	sub register_command {
460	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
461		821
462	my $caller = caller;	822	my $caller = caller;
463	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
464		824
465	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
466	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
467	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
468		836
469	sub register_extcmd {	837	sub register_extcmd {
470	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
471		839
472	my $caller = caller;	840	$EXTCMD{$name} = $cb;
473	#warn "registering extcmd '$name' to '$caller'";
474
475	$extcmd{$name} = [$cb, $caller];
476	}	841	}
477		842
478	sub register {	843	cf::player->attach (
479	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
480		846
481	#TODO	847	my $cb = $COMMAND{$name}
482	}	848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
483		874
484	sub load_extension {	875	sub load_extension {
485	my ($path) = @_;	876	my ($path) = @_;
486		877
487	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
488	my $base = $1;	879	my $base = $1;
489	my $pkg = $1;	880	my $pkg = $1;
490	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
491	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
492		883
493	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
494		885
495	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
496	or die "$path: $!";	887	or die "$path: $!";
497		888
498	my $source =	889	my $source =
499	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
500	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
501	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
502	. "\n};\n1";	893	. "\n};\n1";
503		894
504	eval $source	895	unless (eval $source) {
505	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
506		897	: "extension disabled.\n";
507	push @exts, $pkg;	898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
508	$ext_pkg{$base} = $pkg;	899	warn $@;
509		900	warn "mandatory extension failed to load, exiting.\n";
510	# no strict 'refs';	901	exit 1;
511	# @{"$pkg\::ISA"} = ext::;	902	}
512		903	die $@;
513	register $base, $pkg;
514	}
515
516	sub unload_extension {
517	my ($pkg) = @_;
518
519	warn "removing extension $pkg\n";
520
521	# remove hooks
522	#TODO
523	# for my $idx (0 .. $#PLUGIN_EVENT) {
524	# delete $hook[$idx]{$pkg};
525	# }	904	}
526		905
527	# remove commands	906	push @EXTS, $pkg;
528	for my $name (keys %command) {
529	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
530
531	if (@cb) {
532	$command{$name} = \@cb;
533	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
534	} else {
535	delete $command{$name};
536	delete $COMMAND{"$name\000"};
537	}
538	}
539
540	# remove extcmds
541	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
542	delete $extcmd{$name};
543	}
544
545	if (my $cb = $pkg->can ("unload")) {
546	eval {
547	$cb->($pkg);
548	1
549	} or warn "$pkg unloaded, but with errors: $@";
550	}
551
552	Symbol::delete_package $pkg;
553	}	907	}
554		908
555	sub load_extensions {	909	sub load_extensions {
556	my $LIBDIR = maps_directory "perl";
557
558	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
559	next unless -r $ext;	911	next unless -r $ext;
560	eval {	912	eval {
561	load_extension $ext;	913	load_extension $ext;
562	1	914	1
563	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
564	}	916	}
565	}	917	}
566		918
567	sub _perl_reload(&) {	919	#############################################################################
		920
		921	=head2 CORE EXTENSIONS
		922
		923	Functions and methods that extend core crossfire objects.
		924
		925	=cut
		926
		927	package cf::player;
		928
		929	use Coro::AIO;
		930
		931	=head3 cf::player
		932
		933	=over 4
		934
		935	=item cf::player::find $login
		936
		937	Returns the given player object, loading it if necessary (might block).
		938
		939	=cut
		940
		941	sub playerdir($) {
		942	cf::localdir
		943	. "/"
		944	. cf::playerdir
		945	. "/"
		946	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		947	}
		948
		949	sub path($) {
		950	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		951
		952	(playerdir $login) . "/$login.pl"
		953	}
		954
		955	sub find_active($) {
		956	$cf::PLAYER{$_[0]}
		957	and $cf::PLAYER{$_[0]}->active
		958	and $cf::PLAYER{$_[0]}
		959	}
		960
		961	sub exists($) {
		962	my ($login) = @_;
		963
		964	$cf::PLAYER{$login}
		965	or cf::sync_job { !aio_stat path $login }
		966	}
		967
		968	sub find($) {
		969	return $cf::PLAYER{$_[0]} || do {
		970	my $login = $_[0];
		971
		972	my $guard = cf::lock_acquire "user_find:$login";
		973
		974	$cf::PLAYER{$_[0]} || do {
		975	my $pl = load_pl path $login
		976	or return;
		977	$cf::PLAYER{$login} = $pl
		978	}
		979	}
		980	}
		981
		982	sub save($) {
		983	my ($pl) = @_;
		984
		985	return if $pl->{deny_save};
		986
		987	my $path = path $pl;
		988	my $guard = cf::lock_acquire "user_save:$path";
		989
		990	return if $pl->{deny_save};
		991
		992	aio_mkdir playerdir $pl, 0770;
		993	$pl->{last_save} = $cf::RUNTIME;
		994
		995	$pl->save_pl ($path);
		996	Coro::cede;
		997	}
		998
		999	sub new($) {
		1000	my ($login) = @_;
		1001
		1002	my $self = create;
		1003
		1004	$self->ob->name ($login);
		1005	$self->{deny_save} = 1;
		1006
		1007	$cf::PLAYER{$login} = $self;
		1008
		1009	$self
		1010	}
		1011
		1012	=item $pl->quit_character
		1013
		1014	Nukes the player without looking back. If logged in, the connection will
		1015	be destroyed. May block for a long time.
		1016
		1017	=cut
		1018
		1019	sub quit_character {
		1020	my ($pl) = @_;
		1021
		1022	$pl->{deny_save} = 1;
		1023	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1024
		1025	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1026	$pl->deactivate;
		1027	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1028	$pl->ns->destroy if $pl->ns;
		1029
		1030	my $path = playerdir $pl;
		1031	my $temp = "$path~$cf::RUNTIME~deleting~";
		1032	aio_rename $path, $temp;
		1033	delete $cf::PLAYER{$pl->ob->name};
		1034	$pl->destroy;
		1035	IO::AIO::aio_rmtree $temp;
		1036	}
		1037
		1038	=item cf::player::list_logins
		1039
		1040	Returns am arrayref of all valid playernames in the system, can take a
		1041	while and may block, so not sync_job-capable, ever.
		1042
		1043	=cut
		1044
		1045	sub list_logins {
		1046	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1047	or return [];
		1048
		1049	my @logins;
		1050
		1051	for my $login (@$dirs) {
		1052	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1053	aio_read $fh, 0, 512, my $buf, 0 or next;
		1054	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1055
		1056	utf8::decode $login;
		1057	push @logins, $login;
		1058	}
		1059
		1060	\@logins
		1061	}
		1062
		1063	=item $player->maps
		1064
		1065	Returns an arrayref of map paths that are private for this
		1066	player. May block.
		1067
		1068	=cut
		1069
		1070	sub maps($) {
		1071	my ($pl) = @_;
		1072
		1073	my $files = aio_readdir playerdir $pl
		1074	or return;
		1075
		1076	my @paths;
		1077
		1078	for (@$files) {
		1079	utf8::decode $_;
		1080	next if /\.(?:pl|pst)$/;
		1081	next unless /^$PATH_SEP/o;
		1082
		1083	s/\.map$//;
		1084	push @paths, "~" . $pl->ob->name . "/" . $_;
		1085	}
		1086
		1087	\@paths
		1088	}
		1089
		1090	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1091
		1092	Sends an ext reply to the player.
		1093
		1094	=cut
		1095
		1096	sub ext_reply($$$%) {
		1097	my ($self, $id, %msg) = @_;
		1098
		1099	$msg{msgid} = $id;
		1100
		1101	$self->send ("ext " . cf::to_json \%msg);
		1102	}
		1103
		1104	package cf;
		1105
		1106	=back
		1107
		1108
		1109	=head3 cf::map
		1110
		1111	=over 4
		1112
		1113	=cut
		1114
		1115	package cf::map;
		1116
		1117	use Fcntl;
		1118	use Coro::AIO;
		1119
		1120	use overload
		1121	'""' => \&as_string,
		1122	fallback => 1;
		1123
		1124	our $MAX_RESET = 3600;
		1125	our $DEFAULT_RESET = 3000;
		1126
		1127	sub generate_random_map {
		1128	my ($self, $rmp) = @_;
		1129	# mit "rum" bekleckern, nicht
		1130	$self->_create_random_map (
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region}), $rmp->{custom}
		1142	)
		1143	}
		1144
		1145	=item cf::map->register ($regex, $prio)
		1146
		1147	Register a handler for the map path matching the given regex at the
		1148	givne priority (higher is better, built-in handlers have priority 0, the
		1149	default).
		1150
		1151	=cut
		1152
		1153	sub register {
		1154	my (undef, $regex, $prio) = @_;
		1155	my $pkg = caller;
		1156
		1157	no strict;
		1158	push @{"$pkg\::ISA"}, __PACKAGE__;
		1159
		1160	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1161	}
		1162
		1163	# also paths starting with '/'
		1164	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1165
		1166	sub thawer_merge {
		1167	my ($self, $merge) = @_;
		1168
		1169	# we have to keep some variables in memory intact
		1170	local $self->{path};
		1171	local $self->{load_path};
		1172	local $self->{deny_save};
		1173	local $self->{deny_reset};
		1174
		1175	$self->SUPER::thawer_merge ($merge);
		1176	}
		1177
		1178	sub normalise {
		1179	my ($path, $base) = @_;
		1180
		1181	$path = "$path"; # make sure its a string
		1182
		1183	# map plan:
		1184	#
		1185	# /! non-realised random map exit (special hack!)
		1186	# {... are special paths that are not being touched
		1187	# ?xxx/... are special absolute paths
		1188	# ?random/... random maps
		1189	# /... normal maps
		1190	# ~user/... per-player map of a specific user
		1191
		1192	$path =~ s/$PATH_SEP/\//go;
		1193
		1194	# treat it as relative path if it starts with
		1195	# something that looks reasonable
		1196	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1197	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1198
		1199	$base =~ s{[^/]+/?$}{};
		1200	$path = "$base/$path";
		1201	}
		1202
		1203	for ($path) {
		1204	redo if s{//}{/};
		1205	redo if s{/\.?/}{/};
		1206	redo if s{/[^/]+/\.\./}{/};
		1207	}
		1208
		1209	$path
		1210	}
		1211
		1212	sub new_from_path {
		1213	my (undef, $path, $base) = @_;
		1214
		1215	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1216
		1217	$path = normalise $path, $base;
		1218
		1219	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1220	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1221	my $self = bless cf::map::new, $pkg;
		1222	$self->{path} = $path; $self->path ($path);
		1223	$self->init; # pass $1 etc.
		1224	return $self;
		1225	}
		1226	}
		1227
		1228	Carp::carp "unable to resolve path '$path' (base '$base').";
		1229	()
		1230	}
		1231
		1232	sub init {
		1233	my ($self) = @_;
		1234
		1235	$self
		1236	}
		1237
		1238	sub as_string {
		1239	my ($self) = @_;
		1240
		1241	"$self->{path}"
		1242	}
		1243
		1244	# the displayed name, this is a one way mapping
		1245	sub visible_name {
		1246	&as_string
		1247	}
		1248
		1249	# the original (read-only) location
		1250	sub load_path {
		1251	my ($self) = @_;
		1252
		1253	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1254	}
		1255
		1256	# the temporary/swap location
		1257	sub save_path {
		1258	my ($self) = @_;
		1259
		1260	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1261	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1262	}
		1263
		1264	# the unique path, undef == no special unique path
		1265	sub uniq_path {
		1266	my ($self) = @_;
		1267
		1268	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1269	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1270	}
		1271
		1272	# and all this just because we cannot iterate over
		1273	# all maps in C++...
		1274	sub change_all_map_light {
		1275	my ($change) = @_;
		1276
		1277	$_->change_map_light ($change)
		1278	for grep $_->outdoor, values %cf::MAP;
		1279	}
		1280
		1281	sub unlink_save {
		1282	my ($self) = @_;
		1283
		1284	utf8::encode (my $save = $self->save_path);
		1285	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1286	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1287	}
		1288
		1289	sub load_header_from($) {
		1290	my ($self, $path) = @_;
		1291
		1292	utf8::encode $path;
		1293	aio_open $path, O_RDONLY, 0
		1294	or return;
		1295
		1296	$self->_load_header ($path)
		1297	or return;
		1298
		1299	$self->{load_path} = $path;
		1300
		1301	1
		1302	}
		1303
		1304	sub load_header_orig {
		1305	my ($self) = @_;
		1306
		1307	$self->load_header_from ($self->load_path)
		1308	}
		1309
		1310	sub load_header_temp {
		1311	my ($self) = @_;
		1312
		1313	$self->load_header_from ($self->save_path)
		1314	}
		1315
		1316	sub prepare_temp {
		1317	my ($self) = @_;
		1318
		1319	$self->last_access ((delete $self->{last_access})
		1320	|| $cf::RUNTIME); #d#
		1321	# safety
		1322	$self->{instantiate_time} = $cf::RUNTIME
		1323	if $self->{instantiate_time} > $cf::RUNTIME;
		1324	}
		1325
		1326	sub prepare_orig {
		1327	my ($self) = @_;
		1328
		1329	$self->{load_original} = 1;
		1330	$self->{instantiate_time} = $cf::RUNTIME;
		1331	$self->last_access ($cf::RUNTIME);
		1332	$self->instantiate;
		1333	}
		1334
		1335	sub load_header {
		1336	my ($self) = @_;
		1337
		1338	if ($self->load_header_temp) {
		1339	$self->prepare_temp;
		1340	} else {
		1341	$self->load_header_orig
		1342	or return;
		1343	$self->prepare_orig;
		1344	}
		1345
		1346	1
		1347	}
		1348
		1349	sub find;
		1350	sub find {
		1351	my ($path, $origin) = @_;
		1352
		1353	$path = normalise $path, $origin && $origin->path;
		1354
		1355	cf::lock_wait "map_find:$path";
		1356
		1357	$cf::MAP{$path} || do {
		1358	my $guard = cf::lock_acquire "map_find:$path";
		1359	my $map = new_from_path cf::map $path
		1360	or return;
		1361
		1362	$map->{last_save} = $cf::RUNTIME;
		1363
		1364	$map->load_header
		1365	or return;
		1366
		1367	if ($map->should_reset) {
		1368	# doing this can freeze the server in a sync job, obviously
		1369	#$cf::WAIT_FOR_TICK->wait;
		1370	$map->reset;
		1371	undef $guard;
		1372	return find $path;
		1373	}
		1374
		1375	$cf::MAP{$path} = $map
		1376	}
		1377	}
		1378
		1379	sub pre_load { }
		1380	sub post_load { }
		1381
		1382	sub load {
		1383	my ($self) = @_;
		1384
		1385	my $path = $self->{path};
		1386	my $guard = cf::lock_acquire "map_load:$path";
		1387
		1388	return if $self->in_memory != cf::MAP_SWAPPED;
		1389
		1390	$self->in_memory (cf::MAP_LOADING);
		1391
		1392	$self->alloc;
		1393
		1394	$self->pre_load;
		1395
		1396	$self->_load_objects ($self->{load_path}, 1)
		1397	or return;
		1398
		1399	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1400	if delete $self->{load_original};
		1401
		1402	if (my $uniq = $self->uniq_path) {
		1403	utf8::encode $uniq;
		1404	if (aio_open $uniq, O_RDONLY, 0) {
		1405	$self->clear_unique_items;
		1406	$self->_load_objects ($uniq, 0);
		1407	}
		1408	}
		1409
		1410	Coro::cede;
		1411
		1412	# now do the right thing for maps
		1413	$self->link_multipart_objects;
		1414
		1415	unless ($self->{deny_activate}) {
		1416	$self->decay_objects;
		1417	$self->fix_auto_apply;
		1418	$self->update_buttons;
		1419	Coro::cede;
		1420	$self->set_darkness_map;
		1421	$self->difficulty ($self->estimate_difficulty)
		1422	unless $self->difficulty;
		1423	Coro::cede;
		1424	$self->activate;
		1425	}
		1426
		1427	$self->post_load;
		1428
		1429	$self->in_memory (cf::MAP_IN_MEMORY);
		1430	}
		1431
		1432	sub customise_for {
		1433	my ($self, $ob) = @_;
		1434
		1435	return find "~" . $ob->name . "/" . $self->{path}
		1436	if $self->per_player;
		1437
		1438	$self
		1439	}
		1440
		1441	# find and load all maps in the 3x3 area around a map
		1442	sub load_diag {
568	my ($msg) = @_;	1443	my ($map) = @_;
569		1444
570	$msg->("reloading...");	1445	my @diag; # diagonal neighbours
571		1446
572	eval {	1447	for (0 .. 3) {
573	# 1. cancel all watchers	1448	my $neigh = $map->tile_path ($_)
574	$_->cancel for Event::all_watchers;	1449	or next;
		1450	$neigh = find $neigh, $map
		1451	or next;
		1452	$neigh->load;
575		1453
576	# 2. unload all extensions	1454	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
577	for (@exts) {	1455	[$neigh->tile_path (($_ + 1) % 4), $neigh];
578	$msg->("unloading <$_>");	1456	}
579	unload_extension $_;
580	}
581		1457
582	# 3. unload all modules loaded from $LIBDIR	1458	for (@diag) {
583	while (my ($k, $v) = each %INC) {	1459	my $neigh = find @$_
584	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1460	or next;
		1461	$neigh->load;
		1462	}
		1463	}
585		1464
586	$msg->("removing <$k>");	1465	sub find_sync {
587	delete $INC{$k};	1466	my ($path, $origin) = @_;
588		1467
589	$k =~ s/\.pm$//;	1468	cf::sync_job { find $path, $origin }
590	$k =~ s/\//::/g;	1469	}
591		1470
592	if (my $cb = $k->can ("unload_module")) {	1471	sub do_load_sync {
593	$cb->();	1472	my ($map) = @_;
		1473
		1474	cf::sync_job { $map->load };
		1475	}
		1476
		1477	our %MAP_PREFETCH;
		1478	our $MAP_PREFETCHER = undef;
		1479
		1480	sub find_async {
		1481	my ($path, $origin) = @_;
		1482
		1483	$path = normalise $path, $origin && $origin->{path};
		1484
		1485	if (my $map = $cf::MAP{$path}) {
		1486	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1487	}
		1488
		1489	undef $MAP_PREFETCH{$path};
		1490	$MAP_PREFETCHER ||= cf::async {
		1491	while (%MAP_PREFETCH) {
		1492	for my $path (keys %MAP_PREFETCH) {
		1493	my $map = find $path
		1494	or next;
		1495	$map->load;
		1496
		1497	delete $MAP_PREFETCH{$path};
594	}	1498	}
595
596	Symbol::delete_package $k;
597	}
598
599	# 4. get rid of safe::, as good as possible
600	Symbol::delete_package "safe::$_"
601	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
602
603	# 5. remove register_script_function callbacks
604	# TODO
605		1499	}
606	# 6. unload cf.pm "a bit"	1500	undef $MAP_PREFETCHER;
607	delete $INC{"cf.pm"};
608
609	# don't, removes xs symbols, too,
610	# and global variables created in xs
611	#Symbol::delete_package __PACKAGE__;
612
613	# 7. reload cf.pm
614	$msg->("reloading cf.pm");
615	require cf;
616	};	1501	};
617	$msg->($@) if $@;	1502	$MAP_PREFETCHER->prio (6);
618		1503
619	$msg->("reloaded");	1504	()
620	};	1505	}
621		1506
622	sub perl_reload() {	1507	sub save {
623	_perl_reload {	1508	my ($self) = @_;
624	warn $_[0];	1509
625	print "$_[0]\n";	1510	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1511
		1512	$self->{last_save} = $cf::RUNTIME;
		1513
		1514	return unless $self->dirty;
		1515
		1516	my $save = $self->save_path; utf8::encode $save;
		1517	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1518
		1519	$self->{load_path} = $save;
		1520
		1521	return if $self->{deny_save};
		1522
		1523	local $self->{last_access} = $self->last_access;#d#
		1524
		1525	cf::async {
		1526	$_->contr->save for $self->players;
626	};	1527	};
627	}
628		1528
629	register_command "perl-reload", 0, sub {	1529	if ($uniq) {
630	my ($who, $arg) = @_;	1530	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
631		1531	$self->_save_objects ($uniq, cf::IO_UNIQUES);
632	if ($who->flag (FLAG_WIZ)) {
633	_perl_reload {
634	warn $_[0];
635	$who->message ($_[0]);
636	};
637	}
638	};
639
640	#############################################################################
641	# extcmd framework, basically convert ext <msg>
642	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643
644	attach_to_players
645	on_extcmd => sub {
646	my ($pl, $buf) = @_;
647
648	my $msg = eval { from_json $buf };
649
650	if (ref $msg) {
651	if (my $cb = $extcmd{$msg->{msgtype}}) {
652	if (my %reply = $cb->[0]->($pl, $msg)) {
653	$pl->ext_reply ($msg->{msgid}, %reply);
654	}
655	}
656	} else {	1532	} else {
657	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1533	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
658	}
659
660	cf::override;
661	},	1534	}
662	;	1535	}
663		1536
664	#############################################################################	1537	sub swap_out {
665	# load/save/clean perl data associated with a map
666
667	*cf::mapsupport::on_clean = sub {
668	my ($map) = @_;	1538	my ($self) = @_;
669		1539
670	my $path = $map->tmpname;	1540	# save first because save cedes
671	defined $path or return;	1541	$self->save;
672		1542
673	unlink "$path.pst";	1543	my $lock = cf::lock_acquire "map_data:" . $self->path;
674	};
675		1544
676	# old style persistent data, TODO: remove #d#	1545	return if $self->players;
677	*cf::mapsupport::on_swapin =	1546	return if $self->in_memory != cf::MAP_IN_MEMORY;
678	*cf::mapsupport::on_load = sub {	1547	return if $self->{deny_save};
		1548
		1549	$self->clear;
		1550	$self->in_memory (cf::MAP_SWAPPED);
		1551	}
		1552
		1553	sub reset_at {
679	my ($map) = @_;	1554	my ($self) = @_;
680		1555
681	my $path = $map->tmpname;	1556	# TODO: safety, remove and allow resettable per-player maps
682	$path = $map->path unless defined $path;	1557	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1558	return 1e99 if $self->{deny_reset};
683		1559
684	open my $fh, "<:raw", "$path.cfperl"	1560	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
685	or return; # no perl data	1561	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
686		1562
687	my $data = Storable::thaw do { local $/; <$fh> };	1563	$time + $to
		1564	}
688		1565
689	$data->{version} <= 1	1566	sub should_reset {
		1567	my ($self) = @_;
		1568
		1569	$self->reset_at <= $cf::RUNTIME
		1570	}
		1571
		1572	sub reset {
		1573	my ($self) = @_;
		1574
		1575	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1576
		1577	return if $self->players;
		1578	return if $self->isa ("ext::map_per_player");#d#
		1579
		1580	warn "resetting map ", $self->path;#d#
		1581
		1582	delete $cf::MAP{$self->path};
		1583
		1584	$self->in_memory (cf::MAP_SWAPPED);
		1585	$self->clear;
		1586
		1587	$_->clear_links_to ($self) for values %cf::MAP;
		1588
		1589	$self->unlink_save;
		1590	$self->destroy;
		1591	}
		1592
		1593	my $nuke_counter = "aaaa";
		1594
		1595	sub nuke {
		1596	my ($self) = @_;
		1597
		1598	delete $cf::MAP{$self->path};
		1599
		1600	$self->unlink_save;
		1601
		1602	bless $self, "cf::map";
		1603	delete $self->{deny_reset};
		1604	$self->{deny_save} = 1;
		1605	$self->reset_timeout (1);
		1606	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1607
		1608	$cf::MAP{$self->path} = $self;
		1609
		1610	$self->reset; # polite request, might not happen
		1611	}
		1612
		1613	=item cf::map::unique_maps
		1614
		1615	Returns an arrayref of paths of all shared maps that have
		1616	instantiated unique items. May block.
		1617
		1618	=cut
		1619
		1620	sub unique_maps() {
		1621	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
690	or return; # too new	1622	or return;
691		1623
692	$map->_set_obs ($data->{obs});	1624	my @paths;
693	$map->invoke (EVENT_MAP_UPGRADE);
694	};
695		1625
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	1626	for (@$files) {
		1627	utf8::decode $_;
		1628	next if /\.pst$/;
		1629	next unless /^$PATH_SEP/o;
697		1630
698	#############################################################################	1631	s/\.map$//;
699	# load/save perl data associated with player->ob objects	1632	push @paths, $_;
700
701	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_
703	}
704
705	attach_to_players
706	on_load => sub {
707	my ($pl, $path) = @_;
708
709	for my $o (all_objects $pl->ob) {
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {
711	$o->set_ob_key_value ("_perl_data");
712
713	%$o = %{ Storable::thaw pack "H*", $value };
714	}
715	}
716	},	1633	}
717	;
718		1634
719	#############################################################################	1635	\@paths
720	# core extensions - in perl
721
722	=item cf::player::exists $login
723
724	Returns true when the given account exists.
725
726	=cut
727
728	sub cf::player::exists($) {
729	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	1636	}
732		1637
		1638	package cf;
		1639
		1640	=back
		1641
		1642	=head3 cf::object
		1643
		1644	=cut
		1645
		1646	package cf::object;
		1647
		1648	=over 4
		1649
		1650	=item $ob->inv_recursive
		1651
		1652	Returns the inventory of the object _and_ their inventories, recursively.
		1653
		1654	=cut
		1655
		1656	sub inv_recursive_;
		1657	sub inv_recursive_ {
		1658	map { $_, inv_recursive_ $_->inv } @_
		1659	}
		1660
		1661	sub inv_recursive {
		1662	inv_recursive_ inv $_[0]
		1663	}
		1664
		1665	package cf;
		1666
		1667	=back
		1668
		1669	=head3 cf::object::player
		1670
		1671	=over 4
		1672
733	=item $player->reply ($npc, $msg[, $flags])	1673	=item $player_object->reply ($npc, $msg[, $flags])
734		1674
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1675	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	1676	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1677	dialogue with the given NPC character.
738		1678
739	=cut	1679	=cut
740		1680
741	# rough implementation of a future "reply" method that works	1681	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1682	# with dialog boxes.
		1683	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1684	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1685	my ($self, $npc, $msg, $flags) = @_;
745		1686
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1687	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1688
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1692	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1693	$self->message ($msg, $flags);
753	}	1694	}
754	}	1695	}
755		1696
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1697	=item $player_object->may ("access")
757		1698
758	Sends an ext reply to the player.	1699	Returns wether the given player is authorized to access resource "access"
		1700	(e.g. "command_wizcast").
759		1701
760	=cut	1702	=cut
761		1703
762	sub cf::player::ext_reply($$$%) {	1704	sub cf::object::player::may {
		1705	my ($self, $access) = @_;
		1706
		1707	$self->flag (cf::FLAG_WIZ) ||
		1708	(ref $cf::CFG{"may_$access"}
		1709	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1710	: $cf::CFG{"may_$access"})
		1711	}
		1712
		1713	=item $player_object->enter_link
		1714
		1715	Freezes the player and moves him/her to a special map (C<{link}>).
		1716
		1717	The player should be reasonably safe there for short amounts of time. You
		1718	I<MUST> call C<leave_link> as soon as possible, though.
		1719
		1720	Will never block.
		1721
		1722	=item $player_object->leave_link ($map, $x, $y)
		1723
		1724	Moves the player out of the special C<{link}> map onto the specified
		1725	map. If the map is not valid (or omitted), the player will be moved back
		1726	to the location he/she was before the call to C<enter_link>, or, if that
		1727	fails, to the emergency map position.
		1728
		1729	Might block.
		1730
		1731	=cut
		1732
		1733	sub link_map {
		1734	unless ($LINK_MAP) {
		1735	$LINK_MAP = cf::map::find "{link}"
		1736	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1737	$LINK_MAP->load;
		1738	}
		1739
		1740	$LINK_MAP
		1741	}
		1742
		1743	sub cf::object::player::enter_link {
		1744	my ($self) = @_;
		1745
		1746	$self->deactivate_recursive;
		1747
		1748	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1749
		1750	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1751	if $self->map;
		1752
		1753	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1754	}
		1755
		1756	sub cf::object::player::leave_link {
		1757	my ($self, $map, $x, $y) = @_;
		1758
		1759	my $link_pos = delete $self->{_link_pos};
		1760
		1761	unless ($map) {
		1762	# restore original map position
		1763	($map, $x, $y) = @{ $link_pos || [] };
		1764	$map = cf::map::find $map;
		1765
		1766	unless ($map) {
		1767	($map, $x, $y) = @$EMERGENCY_POSITION;
		1768	$map = cf::map::find $map
		1769	or die "FATAL: cannot load emergency map\n";
		1770	}
		1771	}
		1772
		1773	($x, $y) = (-1, -1)
		1774	unless (defined $x) && (defined $y);
		1775
		1776	# use -1 or undef as default coordinates, not 0, 0
		1777	($x, $y) = ($map->enter_x, $map->enter_y)
		1778	if $x <=0 && $y <= 0;
		1779
		1780	$map->load;
		1781	$map->load_diag;
		1782
		1783	return unless $self->contr->active;
		1784	$self->activate_recursive;
		1785	$self->enter_map ($map, $x, $y);
		1786	}
		1787
		1788	cf::player->attach (
		1789	on_logout => sub {
		1790	my ($pl) = @_;
		1791
		1792	# abort map switching before logout
		1793	if ($pl->ob->{_link_pos}) {
		1794	cf::sync_job {
		1795	$pl->ob->leave_link
		1796	};
		1797	}
		1798	},
		1799	on_login => sub {
		1800	my ($pl) = @_;
		1801
		1802	# try to abort aborted map switching on player login :)
		1803	# should happen only on crashes
		1804	if ($pl->ob->{_link_pos}) {
		1805	$pl->ob->enter_link;
		1806	(async {
		1807	# we need this sleep as the login has a concurrent enter_exit running
		1808	# and this sleep increases chances of the player not ending up in scorn
		1809	$pl->ob->reply (undef,
		1810	"There was an internal problem at your last logout, "
		1811	. "the server will try to bring you to your intended destination in a second.",
		1812	cf::NDI_RED);
		1813	Coro::Timer::sleep 1;
		1814	$pl->ob->leave_link;
		1815	})->prio (2);
		1816	}
		1817	},
		1818	);
		1819
		1820	=item $player_object->goto ($path, $x, $y)
		1821
		1822	=cut
		1823
		1824	sub cf::object::player::goto {
		1825	my ($self, $path, $x, $y) = @_;
		1826
		1827	$self->enter_link;
		1828
		1829	(async {
		1830	my $map = cf::map::find $path;
		1831	$map = $map->customise_for ($self) if $map;
		1832
		1833	# warn "entering ", $map->path, " at ($x, $y)\n"
		1834	# if $map;
		1835
		1836	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1837
		1838	$self->leave_link ($map, $x, $y);
		1839	})->prio (1);
		1840	}
		1841
		1842	=item $player_object->enter_exit ($exit_object)
		1843
		1844	=cut
		1845
		1846	sub parse_random_map_params {
		1847	my ($spec) = @_;
		1848
		1849	my $rmp = { # defaults
		1850	xsize => (cf::rndm 15, 40),
		1851	ysize => (cf::rndm 15, 40),
		1852	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1853	#layout => string,
		1854	};
		1855
		1856	for (split /\n/, $spec) {
		1857	my ($k, $v) = split /\s+/, $_, 2;
		1858
		1859	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1860	}
		1861
		1862	$rmp
		1863	}
		1864
		1865	sub prepare_random_map {
		1866	my ($exit) = @_;
		1867
		1868	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1869
		1870	# all this does is basically replace the /! path by
		1871	# a new random map path (?random/...) with a seed
		1872	# that depends on the exit object
		1873
		1874	my $rmp = parse_random_map_params $exit->msg;
		1875
		1876	if ($exit->map) {
		1877	$rmp->{region} = $exit->map->region_name;
		1878	$rmp->{origin_map} = $exit->map->path;
		1879	$rmp->{origin_x} = $exit->x;
		1880	$rmp->{origin_y} = $exit->y;
		1881	}
		1882
		1883	$rmp->{random_seed} ||= $exit->random_seed;
		1884
		1885	my $data = cf::to_json $rmp;
		1886	my $md5 = Digest::MD5::md5_hex $data;
		1887	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1888
		1889	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1890	aio_write $fh, 0, (length $data), $data, 0;
		1891	undef $fh;
		1892	aio_rename "$meta~", $meta;
		1893
		1894	$exit->slaying ("?random/$md5");
		1895	$exit->msg (undef);
		1896	}
		1897	}
		1898
		1899	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1900	my ($self, $exit) = @_;
764		1901
765	$msg{msgid} = $id;	1902	return unless $self->type == cf::PLAYER;
766		1903
767	$self->send ("ext " . to_json \%msg);	1904	$self->enter_link;
768	}
769		1905
770	#############################################################################	1906	(async {
771	# map scripting support	1907	$self->deactivate_recursive; # just to be sure
		1908	unless (eval {
		1909	prepare_random_map $exit
		1910	if $exit->slaying eq "/!";
		1911
		1912	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1913	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1914
		1915	1;
		1916	}) {
		1917	$self->message ("Something went wrong deep within the crossfire server. "
		1918	. "I'll try to bring you back to the map you were before. "
		1919	. "Please report this to the dungeon master!",
		1920	cf::NDI_UNIQUE | cf::NDI_RED);
		1921
		1922	warn "ERROR in enter_exit: $@";
		1923	$self->leave_link;
		1924	}
		1925	})->prio (1);
		1926	}
		1927
		1928	=head3 cf::client
		1929
		1930	=over 4
		1931
		1932	=item $client->send_drawinfo ($text, $flags)
		1933
		1934	Sends a drawinfo packet to the client. Circumvents output buffering so
		1935	should not be used under normal circumstances.
		1936
		1937	=cut
		1938
		1939	sub cf::client::send_drawinfo {
		1940	my ($self, $text, $flags) = @_;
		1941
		1942	utf8::encode $text;
		1943	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1944	}
		1945
		1946
		1947	=item $success = $client->query ($flags, "text", \&cb)
		1948
		1949	Queues a query to the client, calling the given callback with
		1950	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1951	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1952
		1953	Queries can fail, so check the return code. Or don't, as queries will become
		1954	reliable at some point in the future.
		1955
		1956	=cut
		1957
		1958	sub cf::client::query {
		1959	my ($self, $flags, $text, $cb) = @_;
		1960
		1961	return unless $self->state == ST_PLAYING
		1962	|| $self->state == ST_SETUP
		1963	|| $self->state == ST_CUSTOM;
		1964
		1965	$self->state (ST_CUSTOM);
		1966
		1967	utf8::encode $text;
		1968	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1969
		1970	$self->send_packet ($self->{query_queue}[0][0])
		1971	if @{ $self->{query_queue} } == 1;
		1972	}
		1973
		1974	cf::client->attach (
		1975	on_reply => sub {
		1976	my ($ns, $msg) = @_;
		1977
		1978	# this weird shuffling is so that direct followup queries
		1979	# get handled first
		1980	my $queue = delete $ns->{query_queue}
		1981	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1982
		1983	(shift @$queue)->[1]->($msg);
		1984
		1985	push @{ $ns->{query_queue} }, @$queue;
		1986
		1987	if (@{ $ns->{query_queue} } == @$queue) {
		1988	if (@$queue) {
		1989	$ns->send_packet ($ns->{query_queue}[0][0]);
		1990	} else {
		1991	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1992	}
		1993	}
		1994	},
		1995	);
		1996
		1997	=item $client->async (\&cb)
		1998
		1999	Create a new coroutine, running the specified callback. The coroutine will
		2000	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2001	or loss of connection).
		2002
		2003	=cut
		2004
		2005	sub cf::client::async {
		2006	my ($self, $cb) = @_;
		2007
		2008	my $coro = &Coro::async ($cb);
		2009
		2010	$coro->on_destroy (sub {
		2011	delete $self->{_coro}{$coro+0};
		2012	});
		2013
		2014	$self->{_coro}{$coro+0} = $coro;
		2015
		2016	$coro
		2017	}
		2018
		2019	cf::client->attach (
		2020	on_destroy => sub {
		2021	my ($ns) = @_;
		2022
		2023	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2024	},
		2025	);
		2026
		2027	=back
		2028
		2029
		2030	=head2 SAFE SCRIPTING
		2031
		2032	Functions that provide a safe environment to compile and execute
		2033	snippets of perl code without them endangering the safety of the server
		2034	itself. Looping constructs, I/O operators and other built-in functionality
		2035	is not available in the safe scripting environment, and the number of
		2036	functions and methods that can be called is greatly reduced.
		2037
		2038	=cut
772		2039
773	our $safe = new Safe "safe";	2040	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	2041	our $safe_hole = new Safe::Hole;
775		2042
776	$SIG{FPE} = 'IGNORE';	2043	$SIG{FPE} = 'IGNORE';
777		2044
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2045	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		2046
780	# here we export the classes and methods available to script code	2047	# here we export the classes and methods available to script code
781		2048
		2049	=pod
		2050
		2051	The following fucntions and emthods are available within a safe environment:
		2052
		2053	cf::object contr pay_amount pay_player map
		2054	cf::object::player player
		2055	cf::player peaceful
		2056	cf::map trigger
		2057
		2058	=cut
		2059
782	for (	2060	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	2061	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	2062	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	2063	["cf::player" => qw(peaceful)],
		2064	["cf::map" => qw(trigger)],
786	) {	2065	) {
787	no strict 'refs';	2066	no strict 'refs';
788	my ($pkg, @funs) = @$_;	2067	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2068	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	2069	for @funs;
791	}	2070	}
		2071
		2072	=over 4
		2073
		2074	=item @retval = safe_eval $code, [var => value, ...]
		2075
		2076	Compiled and executes the given perl code snippet. additional var/value
		2077	pairs result in temporary local (my) scalar variables of the given name
		2078	that are available in the code snippet. Example:
		2079
		2080	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2081
		2082	=cut
792		2083
793	sub safe_eval($;@) {	2084	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	2085	my ($code, %vars) = @_;
795		2086
796	my $qcode = $code;	2087	my $qcode = $code;
…		…
819	}	2110	}
820		2111
821	wantarray ? @res : $res[0]	2112	wantarray ? @res : $res[0]
822	}	2113	}
823		2114
		2115	=item cf::register_script_function $function => $cb
		2116
		2117	Register a function that can be called from within map/npc scripts. The
		2118	function should be reasonably secure and should be put into a package name
		2119	like the extension.
		2120
		2121	Example: register a function that gets called whenever a map script calls
		2122	C<rent::overview>, as used by the C<rent> extension.
		2123
		2124	cf::register_script_function "rent::overview" => sub {
		2125	...
		2126	};
		2127
		2128	=cut
		2129
824	sub register_script_function {	2130	sub register_script_function {
825	my ($fun, $cb) = @_;	2131	my ($fun, $cb) = @_;
826		2132
827	no strict 'refs';	2133	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2134	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	2135	}
830		2136
		2137	=back
		2138
		2139	=cut
		2140
		2141	#############################################################################
		2142
		2143	=head2 EXTENSION DATABASE SUPPORT
		2144
		2145	Crossfire maintains a very simple database for extension use. It can
		2146	currently store anything that can be serialised using Storable, which
		2147	excludes objects.
		2148
		2149	The parameter C<$family> should best start with the name of the extension
		2150	using it, it should be unique.
		2151
		2152	=over 4
		2153
		2154	=item $hashref = cf::db_get $family
		2155
		2156	Return a hashref for use by the extension C<$family>, which can be
		2157	modified. After modifications, you have to call C<cf::db_dirty> or
		2158	C<cf::db_sync>.
		2159
		2160	=item $value = cf::db_get $family => $key
		2161
		2162	Returns a single value from the database
		2163
		2164	=item cf::db_put $family => $hashref
		2165
		2166	Stores the given family hashref into the database. Updates are delayed, if
		2167	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2168
		2169	=item cf::db_put $family => $key => $value
		2170
		2171	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2172	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2173
		2174	=item cf::db_dirty
		2175
		2176	Marks the database as dirty, to be updated at a later time.
		2177
		2178	=item cf::db_sync
		2179
		2180	Immediately write the database to disk I<if it is dirty>.
		2181
		2182	=cut
		2183
		2184	our $DB;
		2185
		2186	{
		2187	my $path = cf::localdir . "/database.pst";
		2188
		2189	sub db_load() {
		2190	$DB = stat $path ? Storable::retrieve $path : { };
		2191	}
		2192
		2193	my $pid;
		2194
		2195	sub db_save() {
		2196	waitpid $pid, 0 if $pid;
		2197	if (0 == ($pid = fork)) {
		2198	$DB->{_meta}{version} = 1;
		2199	Storable::nstore $DB, "$path~";
		2200	rename "$path~", $path;
		2201	cf::_exit 0 if defined $pid;
		2202	}
		2203	}
		2204
		2205	my $dirty;
		2206
		2207	sub db_sync() {
		2208	db_save if $dirty;
		2209	undef $dirty;
		2210	}
		2211
		2212	my $idle = Event->idle (
		2213	reentrant => 0,
		2214	min => 10,
		2215	max => 20,
		2216	repeat => 0,
		2217	data => WF_AUTOCANCEL,
		2218	cb => \&db_sync,
		2219	);
		2220
		2221	sub db_dirty() {
		2222	$dirty = 1;
		2223	$idle->start;
		2224	}
		2225
		2226	sub db_get($;$) {
		2227	@_ >= 2
		2228	? $DB->{$_[0]}{$_[1]}
		2229	: ($DB->{$_[0]} ||= { })
		2230	}
		2231
		2232	sub db_put($$;$) {
		2233	if (@_ >= 3) {
		2234	$DB->{$_[0]}{$_[1]} = $_[2];
		2235	} else {
		2236	$DB->{$_[0]} = $_[1];
		2237	}
		2238	db_dirty;
		2239	}
		2240
		2241	cf::global->attach (
		2242	prio => 10000,
		2243	on_cleanup => sub {
		2244	db_sync;
		2245	},
		2246	);
		2247	}
		2248
831	#############################################################################	2249	#############################################################################
832	# the server's main()	2250	# the server's main()
833		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
834	sub main {	2273	sub main {
		2274	# we must not ever block the main coroutine
		2275	local $Coro::idle = sub {
		2276	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2277	(async {
		2278	Event::one_event;
		2279	})->prio (Coro::PRIO_MAX);
		2280	};
		2281
		2282	cfg_load;
		2283	db_load;
		2284	load_extensions;
		2285
		2286	$TICK_WATCHER->start;
835	Event::loop;	2287	Event::loop;
836	}	2288	}
837		2289
838	#############################################################################	2290	#############################################################################
839	# initialisation	2291	# initialisation and cleanup
840		2292
841	register "<global>", __PACKAGE__;	2293	# install some emergency cleanup handlers
		2294	BEGIN {
		2295	for my $signal (qw(INT HUP TERM)) {
		2296	Event->signal (
		2297	reentrant => 0,
		2298	data => WF_AUTOCANCEL,
		2299	signal => $signal,
		2300	prio => 0,
		2301	cb => sub {
		2302	cf::cleanup "SIG$signal";
		2303	},
		2304	);
		2305	}
		2306	}
		2307
		2308	sub emergency_save() {
		2309	my $freeze_guard = cf::freeze_mainloop;
		2310
		2311	warn "enter emergency perl save\n";
		2312
		2313	cf::sync_job {
		2314	# use a peculiar iteration method to avoid tripping on perl
		2315	# refcount bugs in for. also avoids problems with players
		2316	# and maps saved/destroyed asynchronously.
		2317	warn "begin emergency player save\n";
		2318	for my $login (keys %cf::PLAYER) {
		2319	my $pl = $cf::PLAYER{$login} or next;
		2320	$pl->valid or next;
		2321	$pl->save;
		2322	}
		2323	warn "end emergency player save\n";
		2324
		2325	warn "begin emergency map save\n";
		2326	for my $path (keys %cf::MAP) {
		2327	my $map = $cf::MAP{$path} or next;
		2328	$map->valid or next;
		2329	$map->save;
		2330	}
		2331	warn "end emergency map save\n";
		2332	};
		2333
		2334	warn "leave emergency perl save\n";
		2335	}
		2336
		2337	sub reload() {
		2338	# can/must only be called in main
		2339	if ($Coro::current != $Coro::main) {
		2340	warn "can only reload from main coroutine";
		2341	return;
		2342	}
		2343
		2344	warn "reloading...";
		2345
		2346	warn "cancelling server ticker";
		2347	$TICK_WATCHER->cancel;
		2348
		2349	cf::emergency_save;
		2350
		2351	eval {
		2352	# if anything goes wrong in here, we should simply crash as we already saved
		2353
		2354	warn "syncing database to disk";
		2355	cf::db_sync;
		2356
		2357	warn "cancelling all WF_AUTOCANCEL watchers";
		2358	for (Event::all_watchers) {
		2359	$_->cancel if $_->data & WF_AUTOCANCEL;
		2360	}
		2361
		2362	warn "flushing outstanding aio requests";
		2363	for (;;) {
		2364	IO::AIO::flush;
		2365	Coro::cede;
		2366	last unless IO::AIO::nreqs;
		2367	warn "iterate...";
		2368	}
		2369
		2370	warn "cancelling all extension coros";
		2371	$_->cancel for values %EXT_CORO;
		2372	%EXT_CORO = ();
		2373
		2374	warn "removing commands";
		2375	%COMMAND = ();
		2376
		2377	warn "removing ext commands";
		2378	%EXTCMD = ();
		2379
		2380	warn "unloading/nuking all extensions";
		2381	for my $pkg (@EXTS) {
		2382	warn "... unloading $pkg";
		2383
		2384	if (my $cb = $pkg->can ("unload")) {
		2385	eval {
		2386	$cb->($pkg);
		2387	1
		2388	} or warn "$pkg unloaded, but with errors: $@";
		2389	}
		2390
		2391	warn "... nuking $pkg";
		2392	Symbol::delete_package $pkg;
		2393	}
		2394
		2395	warn "unloading all perl modules loaded from $LIBDIR";
		2396	while (my ($k, $v) = each %INC) {
		2397	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2398
		2399	warn "... unloading $k";
		2400	delete $INC{$k};
		2401
		2402	$k =~ s/\.pm$//;
		2403	$k =~ s/\//::/g;
		2404
		2405	if (my $cb = $k->can ("unload_module")) {
		2406	$cb->();
		2407	}
		2408
		2409	Symbol::delete_package $k;
		2410	}
		2411
		2412	warn "getting rid of safe::, as good as possible";
		2413	Symbol::delete_package "safe::$_"
		2414	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2415
		2416	warn "unloading cf.pm \"a bit\"";
		2417	delete $INC{"cf.pm"};
		2418
		2419	# don't, removes xs symbols, too,
		2420	# and global variables created in xs
		2421	#Symbol::delete_package __PACKAGE__;
		2422
		2423	warn "unload completed, starting to reload now";
		2424
		2425	warn "reloading cf.pm";
		2426	require cf;
		2427	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2428
		2429	warn "loading config and database again";
		2430	cf::cfg_load;
		2431	cf::db_load;
		2432
		2433	warn "loading extensions";
		2434	cf::load_extensions;
		2435
		2436	warn "reattaching attachments to objects/players";
		2437	_global_reattach;
		2438	warn "reattaching attachments to maps";
		2439	reattach $_ for values %MAP;
		2440
		2441	warn "restarting server ticker";
		2442
		2443	$TICK_WATCHER->start;
		2444	};
		2445
		2446	if ($@) {
		2447	warn $@;
		2448	warn "error while reloading, exiting.";
		2449	exit 1;
		2450	}
		2451
		2452	warn "reloaded";
		2453	};
		2454
		2455	our $RELOAD_WATCHER; # used only during reload
		2456
		2457	register_command "reload" => sub {
		2458	my ($who, $arg) = @_;
		2459
		2460	if ($who->flag (FLAG_WIZ)) {
		2461	$who->message ("reloading server.");
		2462
		2463	# doing reload synchronously and two reloads happen back-to-back,
		2464	# coro crashes during coro_state_free->destroy here.
		2465
		2466	$RELOAD_WATCHER ||= Event->timer (
		2467	reentrant => 0,
		2468	after => 0,
		2469	data => WF_AUTOCANCEL,
		2470	cb => sub {
		2471	reload;
		2472	undef $RELOAD_WATCHER;
		2473	},
		2474	);
		2475	}
		2476	};
842		2477
843	unshift @INC, $LIBDIR;	2478	unshift @INC, $LIBDIR;
844		2479
845	load_extensions;	2480	my $bug_warning = 0;
846		2481
847	$TICK_WATCHER = Event->timer (	2482	$TICK_WATCHER = Event->timer (
		2483	reentrant => 0,
		2484	parked => 1,
848	prio => 1,	2485	prio => 0,
849	at => $NEXT_TICK || 1,	2486	at => $NEXT_TICK || $TICK,
		2487	data => WF_AUTOCANCEL,
850	cb => sub {	2488	cb => sub {
		2489	if ($Coro::current != $Coro::main) {
		2490	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2491	unless ++$bug_warning > 10;
		2492	return;
		2493	}
		2494
		2495	$NOW = Event::time;
		2496
851	cf::server_tick; # one server iteration	2497	cf::server_tick; # one server iteration
852		2498	$RUNTIME += $TICK;
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2499	$NEXT_TICK += $TICK;
855		2500
		2501	$WAIT_FOR_TICK->broadcast;
		2502	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2503
		2504	Event::sweep;
		2505	Coro::cede_notself;
		2506
		2507	# my $AFTER = Event::time;
		2508	# warn $AFTER - $NOW;#d#
		2509
856	# if we are delayed by four ticks, skip them all	2510	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2511	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2512
859	$TICK_WATCHER->at ($NEXT_TICK);	2513	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2514	$TICK_WATCHER->start;
861	},	2515	},
862	);	2516	);
863		2517
864	_reload_2;	2518	IO::AIO::max_poll_time $TICK * 0.1;
		2519
		2520	undef $Coro::AIO::WATCHER;
		2521	$AIO_POLL_WATCHER = Event->io (
		2522	reentrant => 0,
		2523	fd => IO::AIO::poll_fileno,
		2524	poll => 'r',
		2525	prio => 6,
		2526	data => WF_AUTOCANCEL,
		2527	cb => \&IO::AIO::poll_cb,
		2528	);
		2529
		2530	$WRITE_RUNTIME_WATCHER = Event->timer (
		2531	reentrant => 0,
		2532	data => WF_AUTOCANCEL,
		2533	after => 1,
		2534	interval => 10,
		2535	prio => 6, # keep it lowest so it acts like a watchdog
		2536	cb => Coro::unblock_sub {
		2537	write_runtime
		2538	or warn "ERROR: unable to write runtime file: $!";
		2539	},
		2540	);
		2541
		2542	END { cf::emergency_save }
865		2543
866	1	2544	1
867		2545

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