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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.46 by root, Sun Aug 27 16:15:12 2006 UTC vs.
Revision 1.191 by root, Tue Jan 23 01:05:18 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 3.4 ();
		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
		31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
16	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
17	our @EVENT;	44	our @EVENT;
18	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;
20	our $LIBDIR = maps_directory "perl";
21		46
22	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
24	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
25		131
26	BEGIN {	132	BEGIN {
27	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
29	$msg .= "\n"	137	$msg .= "\n"
30	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
31		139
32	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
34	};	141	};
35	}	142	}
36		143
37	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41	my ($prefix, $class) = @_;	148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
42
43	no strict 'refs';
44
45	for my $prop (keys %PROP_TYPE) {
46	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
47	my $sub = lc $1;
48
49	my $type = $PROP_TYPE{$prop};
50	my $idx = $PROP_IDX {$prop};
51
52	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
53	$_[0]->get_property ($type, $idx)
54	};
55
56	*{"$class\::set_$sub"} = sub {
57	$_[0]->set_property ($type, $idx, $_[1]);
58	} unless $ignore_set{$prop};
59	}
60	}
61
62	# auto-generate most of the API
63
64	prop_gen OBJECT_PROP => "cf::object";
65	# CFAPI_OBJECT_ANIMATION?
66	prop_gen PLAYER_PROP => "cf::object::player";
67
68	prop_gen MAP_PROP => "cf::map";
69	prop_gen ARCH_PROP => "cf::arch";
70
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		150
73	# 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
74	# within the Safe compartment.	152	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
76	no strict 'refs';	160	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	162	}
79		163
80	$Event::DIED = sub {	164	$Event::DIED = sub {
81	warn "error in event callback: @_";	165	warn "error in event callback: @_";
82	};	166	};
83		167
84	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89		169
90	#############################################################################	170	=over 4
91	# 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	}
92		194
93	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 $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
94		202
95	sub from_json($) {	203	sub from_json($) {
96	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97	JSON::Syck::Load $_[0]	205	JSON::Syck::Load $_[0]
98	}	206	}
99		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
100	sub to_json($) {	214	sub to_json($) {
101	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
103	}	217	}
104		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
105	#############################################################################	377	#############################################################################
106	# "new" plug-in system
107		378
108	=item $object->attach ($attachment, ...)	379	=head2 ATTACHABLE OBJECTS
109		380
110	Attach a pre-registered attachment to an object.	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.
111		384
112	=item $player->attach ($attachment, ...)	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+).
113		388
114	Attach a pre-registered attachment to a player.	389	=over 4
115		390
116	=item $map->attach ($attachment, ...) # not yet persistent	391	=item $attachable->attach ($attachment, key => $value...)
117		392
118	Attach a pre-registered attachment to a map.	393	=item $attachable->detach ($attachment)
119		394
120	=item cf::attach_global ...	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
121		397
122	Attach handlers for global events.	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
123		400
124	This and all following C<attach_*>-functions expect any number of the	401	$obj->attach (minesweeper => width => 10, height => 10);
125	following handler/hook descriptions:	402
		403	=item $bool = $attachable->attached ($name)
		404
		405	Checks wether the named attachment is currently attached to the object.
		406
		407	=item cf::CLASS->attach ...
		408
		409	=item cf::CLASS->detach ...
		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:
126		445
127	=over 4	446	=over 4
128		447
129	=item prio => $number	448	=item prio => $number
130		449
…		…
132	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
133	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
134	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
135	unless you know what you are doing.	454	unless you know what you are doing.
136		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
137	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
138		463
139	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
140	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
141	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
150	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
151	object/class are recognised.	476	object/class are recognised.
152		477
153	=back	478	=back
154		479
155	=item cf::attach_to_type $object_type, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
156		482
157	Attach handlers for a specific object type (e.g. TRANSPORT).	483	cf::object::attachment sockpuppet =>
		484	on_skill_attack => sub {
		485	my ($self, $victim) = @_;
		486	...
		487	}
		488	}
158		489
159	=item cf::attach_to_objects ...	490	=item $attachable->valid
160		491
161	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
162	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
163	the game.	494	valid C counterpart anymore you get an exception at runtime. This method
164		495	can be used to test for existence of the C object part without causing an
165	=item cf::attach_to_players ...	496	exception.
166
167	Attach handlers to all players.
168
169	=item cf::attach_to_maps ...
170
171	Attach handlers to all maps.
172
173	=item cf:register_attachment $name, ...
174		497
175	=cut	498	=cut
176		499
177	# 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
178	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
179	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)
180	our @CB_PLAYER = ();	504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
181	our @CB_TYPE = (); # registry for type (cf-object class) based events	506	our @CB_TYPE = (); # registry for type (cf-object class) based events
182	our @CB_MAP = ();	507	our @CB_MAP = ();
183		508
184	my %attachment;	509	my %attachment;
185		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
186	sub _attach_cb($\%$$$) {	517	sub _attach_cb($$$$) {
187	my ($registry, $undo, $event, $prio, $cb) = @_;	518	my ($registry, $event, $prio, $cb) = @_;
188		519
189	use sort 'stable';	520	use sort 'stable';
190		521
191	$cb = [$prio, $cb];	522	$cb = [$prio, $cb];
192		523
193	@{$registry->[$event]} = sort	524	@{$registry->[$event]} = sort
194	{ $a->[0] cmp $b->[0] }	525	{ $a->[0] cmp $b->[0] }
195	@{$registry->[$event] || []}, $cb;	526	@{$registry->[$event] || []}, $cb;
196
197	push @{$undo->{cb}}, [$event, $cb];
198	}	527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
199		531
200	# attach handles attaching event callbacks	532	# attach handles attaching event callbacks
201	# 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
202	# registry (== where the callback attaches to).	534	# registry (== where the callback attaches to).
203	sub _attach(\@$@) {	535	sub _attach {
204	my ($registry, $klass, @arg) = @_;	536	my ($registry, $klass, @arg) = @_;
205		537
		538	my $object_type;
206	my $prio = 0;	539	my $prio = 0;
207
208	my %undo = (
209	registry => $registry,
210	cb => [],
211	);
212
213	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	}
214		546
215	while (@arg) {	547	while (@arg) {
216	my $type = shift @arg;	548	my $type = shift @arg;
217		549
218	if ($type eq "prio") {	550	if ($type eq "prio") {
219	$prio = shift @arg;	551	$prio = shift @arg;
220		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
221	} elsif ($type eq "package") {	562	} elsif ($type eq "package") {
222	my $pkg = shift @arg;	563	my $pkg = shift @arg;
223		564
224	while (my ($name, $id) = each %cb_id) {	565	while (my ($name, $id) = each %cb_id) {
225	if (my $cb = $pkg->can ($name)) {	566	if (my $cb = $pkg->can ($name)) {
226	_attach_cb $registry, %undo, $id, $prio, $cb;	567	_attach_cb $registry, $id, $prio, $cb;
227	}	568	}
228	}	569	}
229		570
230	} elsif (exists $cb_id{$type}) {	571	} elsif (exists $cb_id{$type}) {
231	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
232		573
233	} elsif (ref $type) {	574	} elsif (ref $type) {
234	warn "attaching objects not supported, ignoring.\n";	575	warn "attaching objects not supported, ignoring.\n";
235		576
236	} else {	577	} else {
237	shift @arg;	578	shift @arg;
238	warn "attach argument '$type' not supported, ignoring.\n";	579	warn "attach argument '$type' not supported, ignoring.\n";
239	}	580	}
240	}	581	}
241
242	\%undo
243	}	582	}
244		583
245	sub _attach_attachment {	584	sub _object_attach {
246	my ($klass, $obj, $name, @args) = q_;	585	my ($obj, $name, %arg) = @_;
247		586
248	my $res;	587	return if exists $obj->{_attachment}{$name};
249		588
250	if (my $attach = $attachment{$name}) {	589	if (my $attach = $attachment{$name}) {
251	my $registry = $obj->registry;	590	my $registry = $obj->registry;
252		591
		592	for (@$attach) {
		593	my ($klass, @attach) = @$_;
253	$res = _attach @$registry, $klass, @$attach;	594	_attach $registry, $klass, @attach;
254
255	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
256	for (@$cb) {
257	eval { $_->[1]->($obj, @args); };
258	if ($@) {
259	warn "$@";
260	warn "... while processing '$name' instantiate with args <@args>.\n";
261	}
262	}	595	}
263	}	596
		597	$obj->{$name} = \%arg;
264	} else {	598	} else {
265	warn "object uses attachment '$name' that is not available, postponing.\n";	599	warn "object uses attachment '$name' that is not available, postponing.\n";
266	}	600	}
267		601
268	push @{$obj->{_attachment}}, $name;	602	$obj->{_attachment}{$name} = undef;
269
270	$res->{attachment} = $name;
271	$res
272	}	603	}
273		604
274	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 {
275	my ($obj, $name, @args) = @_;	615	my ($obj, $name) = @_;
276		616
277	_attach_attachment KLASS_OBJECT, $obj, $name, @args;	617	if (ref $obj) {
278	}	618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
279		624
280	sub cf::player::attach {	625	sub cf::attachable::attached {
281	my ($obj, $name, @args) = @_;	626	my ($obj, $name) = @_;
282		627
283	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	628	exists $obj->{_attachment}{$name}
284	}	629	}
285		630
286	sub cf::map::attach {	631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
287	my ($obj, $name, @args) = @_;	632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
288		636
289	_attach_attachment KLASS_MAP, $obj, $name, @args;	637	sub cf::\L$klass\E::attachment {
290	}
291
292	sub attach_global {
293	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
294	}
295
296	sub attach_to_type {
297	my $type = shift;
298
299	_attach @{$CB_TYPE[$type]}, 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} = [@_];	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	attach $obj, $name, @{$args || [] };
362	}
363	}
364
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	694	sub reattach {
367	warn "reattach<@_>\n";#d#	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
		702	@$registry = ();
		703
		704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		705
371	for my $name (@{ $obj->{_attachment} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
372	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
		708	for (@$attach) {
		709	my ($klass, @attach) = @$_;
373	_attach @$registry, KLASS_OBJECT, @$attach;	710	_attach $registry, $klass, @attach;
		711	}
374	} else {	712	} else {
375	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
376	}	714	}
377	}	715	}
378
379	warn "reattach<@_, $_>\n";
380	}	716	}
		717
		718	cf::attachable->attach (
		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,
		732	on_clone => sub {
		733	my ($src, $dst) = @_;
		734
		735	@{$dst->registry} = @{$src->registry};
		736
		737	%$dst = %$src;
		738
		739	%{$dst->{_attachment}} = %{$src->{_attachment}}
		740	if exists $src->{_attachment};
		741	},
		742	);
381		743
382	sub object_freezer_save {	744	sub object_freezer_save {
383	my ($filename, $objs) = @_;	745	my ($filename, $rdata, $objs) = @_;
384	warn "freeze $filename\n";#d#
385	use Data::Dumper; print Dumper $objs;
386		746
387	$filename .= ".pst";	747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
388		751
389	if (@$objs) {	752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	753	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	755	aio_fsync $fh;
393	close $fh;	756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
394	rename "$filename~", $filename;	771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
395	} else {	775	} else {
396	unlink $filename;	776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
397	}	779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
398	}	788	}
399		789
400	sub object_thawer_load {	790	sub object_thawer_load {
401	my ($filename) = @_;	791	my ($filename) = @_;
402		792
403	warn "thaw $filename\n";#d#	793	my ($data, $av);
404		794
405	open my $fh, "<:raw:perlio", "$filename.pst"	795	(aio_load $filename, $data) >= 0
406	or return;	796	or return;
407		797
408	eval { local $/; (Storable::thaw <$fh>)->{objs} }	798	unless (aio_stat "$filename.pst") {
409	}	799	(aio_load "$filename.pst", $av) >= 0
410		800	or return;
411	attach_to_objects	801	$av = eval { (Storable::thaw $av)->{objs} };
412	prio => -1000000,
413	on_clone => sub {
414	my ($src, $dst) = @_;
415
416	@{$dst->registry} = @{$src->registry};
417	warn "registry clone ", join ":", @{$src->registry};#d#
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423
424	warn "clone<@_>\n";#d#
425	},	802	}
426	;	803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
427		808
428	#############################################################################	809	#############################################################################
429	# old plug-in events	810	# command handling &c
430		811
431	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
432	my $extension = shift;
433	my $event_code = shift;
434		813
435	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
436	or return;	815	$name.
437		816
438	&$cb	817	=cut
439	}
440
441	sub inject_global_event {
442	my $event = shift;
443
444	my $cb = $hook[$event]
445	or return;
446
447	List::Util::max map &$_, values %$cb
448	}
449
450	sub inject_command {
451	my ($name, $obj, $params) = @_;
452
453	for my $cmd (@{ $command{$name} }) {
454	$cmd->[1]->($obj, $params);
455	}
456
457	-1
458	}
459		818
460	sub register_command {	819	sub register_command {
461	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
462		821
463	my $caller = caller;	822	my $caller = caller;
464	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
465		824
466	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
467	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
468	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
469		836
470	sub register_extcmd {	837	sub register_extcmd {
471	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
472		839
473	my $caller = caller;	840	$EXTCMD{$name} = $cb;
474	#warn "registering extcmd '$name' to '$caller'";
475
476	$extcmd{$name} = [$cb, $caller];
477	}	841	}
478		842
479	sub register {	843	cf::player->attach (
480	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
481		846
482	#TODO	847	my $cb = $COMMAND{$name}
483	}	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	);
484		874
485	sub load_extension {	875	sub load_extension {
486	my ($path) = @_;	876	my ($path) = @_;
487		877
488	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
489	my $base = $1;	879	my $base = $1;
490	my $pkg = $1;	880	my $pkg = $1;
491	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
492	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
493		883
494	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
495		885
496	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
497	or die "$path: $!";	887	or die "$path: $!";
498		888
499	my $source =	889	my $source =
500	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
501	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
502	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
503	. "\n};\n1";	893	. "\n};\n1";
504		894
505	eval $source	895	unless (eval $source) {
506	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
507		897	: "extension disabled.\n";
508	push @exts, $pkg;	898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
509	$ext_pkg{$base} = $pkg;	899	warn $@;
510		900	warn "mandatory extension failed to load, exiting.\n";
511	# no strict 'refs';	901	exit 1;
512	# @{"$pkg\::ISA"} = ext::;	902	}
513		903	die $@;
514	register $base, $pkg;
515	}
516
517	sub unload_extension {
518	my ($pkg) = @_;
519
520	warn "removing extension $pkg\n";
521
522	# remove hooks
523	#TODO
524	# for my $idx (0 .. $#PLUGIN_EVENT) {
525	# delete $hook[$idx]{$pkg};
526	# }	904	}
527		905
528	# remove commands	906	push @EXTS, $pkg;
529	for my $name (keys %command) {
530	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
531
532	if (@cb) {
533	$command{$name} = \@cb;
534	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
535	} else {
536	delete $command{$name};
537	delete $COMMAND{"$name\000"};
538	}
539	}
540
541	# remove extcmds
542	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
543	delete $extcmd{$name};
544	}
545
546	if (my $cb = $pkg->can ("unload")) {
547	eval {
548	$cb->($pkg);
549	1
550	} or warn "$pkg unloaded, but with errors: $@";
551	}
552
553	Symbol::delete_package $pkg;
554	}	907	}
555		908
556	sub load_extensions {	909	sub load_extensions {
557	my $LIBDIR = maps_directory "perl";
558
559	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
560	next unless -r $ext;	911	next unless -r $ext;
561	eval {	912	eval {
562	load_extension $ext;	913	load_extension $ext;
563	1	914	1
564	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
565	}	916	}
566	}	917	}
567		918
568	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	# map plan:
		1182	#
		1183	# /! non-realised random map exit (special hack!)
		1184	# {... are special paths that are not being touched
		1185	# ?xxx/... are special absolute paths
		1186	# ?random/... random maps
		1187	# /... normal maps
		1188	# ~user/... per-player map of a specific user
		1189
		1190	$path =~ s/$PATH_SEP/\//go;
		1191
		1192	# treat it as relative path if it starts with
		1193	# something that looks reasonable
		1194	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1195	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1196
		1197	$base =~ s{[^/]+/?$}{};
		1198	$path = "$base/$path";
		1199	}
		1200
		1201	for ($path) {
		1202	redo if s{//}{/};
		1203	redo if s{/\.?/}{/};
		1204	redo if s{/[^/]+/\.\./}{/};
		1205	}
		1206
		1207	$path
		1208	}
		1209
		1210	sub new_from_path {
		1211	my (undef, $path, $base) = @_;
		1212
		1213	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1214
		1215	$path = normalise $path, $base;
		1216
		1217	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1218	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1219	my $self = bless cf::map::new, $pkg;
		1220	$self->{path} = $path; $self->path ($path);
		1221	$self->init; # pass $1 etc.
		1222	return $self;
		1223	}
		1224	}
		1225
		1226	Carp::carp "unable to resolve path '$path'.";
		1227	()
		1228	}
		1229
		1230	sub init {
		1231	my ($self) = @_;
		1232
		1233	$self
		1234	}
		1235
		1236	sub as_string {
		1237	my ($self) = @_;
		1238
		1239	"$self->{path}"
		1240	}
		1241
		1242	# the displayed name, this is a one way mapping
		1243	sub visible_name {
		1244	&as_string
		1245	}
		1246
		1247	# the original (read-only) location
		1248	sub load_path {
		1249	my ($self) = @_;
		1250
		1251	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1252	}
		1253
		1254	# the temporary/swap location
		1255	sub save_path {
		1256	my ($self) = @_;
		1257
		1258	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1259	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1260	}
		1261
		1262	# the unique path, undef == no special unique path
		1263	sub uniq_path {
		1264	my ($self) = @_;
		1265
		1266	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1267	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1268	}
		1269
		1270	# and all this just because we cannot iterate over
		1271	# all maps in C++...
		1272	sub change_all_map_light {
		1273	my ($change) = @_;
		1274
		1275	$_->change_map_light ($change)
		1276	for grep $_->outdoor, values %cf::MAP;
		1277	}
		1278
		1279	sub unlink_save {
		1280	my ($self) = @_;
		1281
		1282	utf8::encode (my $save = $self->save_path);
		1283	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1284	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1285	}
		1286
		1287	sub load_header_from($) {
		1288	my ($self, $path) = @_;
		1289
		1290	utf8::encode $path;
		1291	aio_open $path, O_RDONLY, 0
		1292	or return;
		1293
		1294	$self->_load_header ($path)
		1295	or return;
		1296
		1297	$self->{load_path} = $path;
		1298
		1299	1
		1300	}
		1301
		1302	sub load_header_orig {
		1303	my ($self) = @_;
		1304
		1305	$self->load_header_from ($self->load_path)
		1306	}
		1307
		1308	sub load_header_temp {
		1309	my ($self) = @_;
		1310
		1311	$self->load_header_from ($self->save_path)
		1312	}
		1313
		1314	sub prepare_temp {
		1315	my ($self) = @_;
		1316
		1317	$self->last_access ((delete $self->{last_access})
		1318	|| $cf::RUNTIME); #d#
		1319	# safety
		1320	$self->{instantiate_time} = $cf::RUNTIME
		1321	if $self->{instantiate_time} > $cf::RUNTIME;
		1322	}
		1323
		1324	sub prepare_orig {
		1325	my ($self) = @_;
		1326
		1327	$self->{load_original} = 1;
		1328	$self->{instantiate_time} = $cf::RUNTIME;
		1329	$self->last_access ($cf::RUNTIME);
		1330	$self->instantiate;
		1331	}
		1332
		1333	sub load_header {
		1334	my ($self) = @_;
		1335
		1336	if ($self->load_header_temp) {
		1337	$self->prepare_temp;
		1338	} else {
		1339	$self->load_header_orig
		1340	or return;
		1341	$self->prepare_orig;
		1342	}
		1343
		1344	1
		1345	}
		1346
		1347	sub find;
		1348	sub find {
		1349	my ($path, $origin) = @_;
		1350
		1351	$path = normalise $path, $origin && $origin->path;
		1352
		1353	cf::lock_wait "map_find:$path";
		1354
		1355	$cf::MAP{$path} || do {
		1356	my $guard = cf::lock_acquire "map_find:$path";
		1357	my $map = new_from_path cf::map $path
		1358	or return;
		1359
		1360	$map->{last_save} = $cf::RUNTIME;
		1361
		1362	$map->load_header
		1363	or return;
		1364
		1365	if ($map->should_reset) {
		1366	# doing this can freeze the server in a sync job, obviously
		1367	#$cf::WAIT_FOR_TICK->wait;
		1368	$map->reset;
		1369	undef $guard;
		1370	$map = find $path
		1371	or return;
		1372	}
		1373
		1374	$cf::MAP{$path} = $map
		1375	}
		1376	}
		1377
		1378	sub pre_load { }
		1379	sub post_load { }
		1380
		1381	sub load {
		1382	my ($self) = @_;
		1383
		1384	my $path = $self->{path};
		1385	my $guard = cf::lock_acquire "map_load:$path";
		1386
		1387	return if $self->in_memory != cf::MAP_SWAPPED;
		1388
		1389	$self->in_memory (cf::MAP_LOADING);
		1390
		1391	$self->alloc;
		1392
		1393	$self->pre_load;
		1394
		1395	$self->_load_objects ($self->{load_path}, 1)
		1396	or return;
		1397
		1398	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1399	if delete $self->{load_original};
		1400
		1401	if (my $uniq = $self->uniq_path) {
		1402	utf8::encode $uniq;
		1403	if (aio_open $uniq, O_RDONLY, 0) {
		1404	$self->clear_unique_items;
		1405	$self->_load_objects ($uniq, 0);
		1406	}
		1407	}
		1408
		1409	Coro::cede;
		1410
		1411	# now do the right thing for maps
		1412	$self->link_multipart_objects;
		1413
		1414	unless ($self->{deny_activate}) {
		1415	$self->decay_objects;
		1416	$self->fix_auto_apply;
		1417	$self->update_buttons;
		1418	Coro::cede;
		1419	$self->set_darkness_map;
		1420	$self->difficulty ($self->estimate_difficulty)
		1421	unless $self->difficulty;
		1422	Coro::cede;
		1423	$self->activate;
		1424	}
		1425
		1426	$self->post_load;
		1427
		1428	$self->in_memory (cf::MAP_IN_MEMORY);
		1429	}
		1430
		1431	sub customise_for {
		1432	my ($self, $ob) = @_;
		1433
		1434	return find "~" . $ob->name . "/" . $self->{path}
		1435	if $self->per_player;
		1436
		1437	$self
		1438	}
		1439
		1440	# find and load all maps in the 3x3 area around a map
		1441	sub load_diag {
569	my ($msg) = @_;	1442	my ($map) = @_;
570		1443
571	$msg->("reloading...");	1444	my @diag; # diagonal neighbours
572		1445
573	eval {	1446	for (0 .. 3) {
574	# 1. cancel all watchers	1447	my $neigh = $map->tile_path ($_)
575	$_->cancel for Event::all_watchers;	1448	or next;
		1449	$neigh = find $neigh, $map
		1450	or next;
		1451	$neigh->load;
576		1452
577	# 2. unload all extensions	1453	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
578	for (@exts) {	1454	[$neigh->tile_path (($_ + 1) % 4), $neigh];
579	$msg->("unloading <$_>");	1455	}
580	unload_extension $_;
581	}
582		1456
583	# 3. unload all modules loaded from $LIBDIR	1457	for (@diag) {
584	while (my ($k, $v) = each %INC) {	1458	my $neigh = find @$_
585	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1459	or next;
		1460	$neigh->load;
		1461	}
		1462	}
586		1463
587	$msg->("removing <$k>");	1464	sub find_sync {
588	delete $INC{$k};	1465	my ($path, $origin) = @_;
589		1466
590	$k =~ s/\.pm$//;	1467	cf::sync_job { find $path, $origin }
591	$k =~ s/\//::/g;	1468	}
592		1469
593	if (my $cb = $k->can ("unload_module")) {	1470	sub do_load_sync {
594	$cb->();	1471	my ($map) = @_;
		1472
		1473	cf::sync_job { $map->load };
		1474	}
		1475
		1476	our %MAP_PREFETCH;
		1477	our $MAP_PREFETCHER = undef;
		1478
		1479	sub find_async {
		1480	my ($path, $origin) = @_;
		1481
		1482	$path = normalise $path, $origin && $origin->{path};
		1483
		1484	if (my $map = $cf::MAP{$path}) {
		1485	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1486	}
		1487
		1488	undef $MAP_PREFETCH{$path};
		1489	$MAP_PREFETCHER ||= cf::async {
		1490	while (%MAP_PREFETCH) {
		1491	for my $path (keys %MAP_PREFETCH) {
		1492	my $map = find $path
		1493	or next;
		1494	$map->load;
		1495
		1496	delete $MAP_PREFETCH{$path};
595	}	1497	}
596
597	Symbol::delete_package $k;
598	}
599
600	# 4. get rid of safe::, as good as possible
601	Symbol::delete_package "safe::$_"
602	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
603
604	# 5. remove register_script_function callbacks
605	# TODO
606		1498	}
607	# 6. unload cf.pm "a bit"	1499	undef $MAP_PREFETCHER;
608	delete $INC{"cf.pm"};
609
610	# don't, removes xs symbols, too,
611	# and global variables created in xs
612	#Symbol::delete_package __PACKAGE__;
613
614	# 7. reload cf.pm
615	$msg->("reloading cf.pm");
616	require cf;
617	};	1500	};
618	$msg->($@) if $@;	1501	$MAP_PREFETCHER->prio (6);
619		1502
620	$msg->("reloaded");	1503	()
621	};	1504	}
622		1505
623	sub perl_reload() {	1506	sub save {
624	_perl_reload {	1507	my ($self) = @_;
625	warn $_[0];	1508
626	print "$_[0]\n";	1509	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1510
		1511	$self->{last_save} = $cf::RUNTIME;
		1512
		1513	return unless $self->dirty;
		1514
		1515	my $save = $self->save_path; utf8::encode $save;
		1516	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1517
		1518	$self->{load_path} = $save;
		1519
		1520	return if $self->{deny_save};
		1521
		1522	local $self->{last_access} = $self->last_access;#d#
		1523
		1524	cf::async {
		1525	$_->contr->save for $self->players;
627	};	1526	};
628	}
629		1527
630	register_command "perl-reload", 0, sub {	1528	if ($uniq) {
631	my ($who, $arg) = @_;	1529	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
632		1530	$self->_save_objects ($uniq, cf::IO_UNIQUES);
633	if ($who->flag (FLAG_WIZ)) {
634	_perl_reload {
635	warn $_[0];
636	$who->message ($_[0]);
637	};
638	}
639	};
640
641	#############################################################################
642	# extcmd framework, basically convert ext <msg>
643	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
644
645	attach_to_players
646	on_extcmd => sub {
647	my ($pl, $buf) = @_;
648
649	my $msg = eval { from_json $buf };
650
651	if (ref $msg) {
652	if (my $cb = $extcmd{$msg->{msgtype}}) {
653	if (my %reply = $cb->[0]->($pl, $msg)) {
654	$pl->ext_reply ($msg->{msgid}, %reply);
655	}
656	}
657	} else {	1531	} else {
658	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1532	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
659	}
660
661	cf::override;
662	},	1533	}
663	;	1534	}
664		1535
665	#############################################################################	1536	sub swap_out {
666	# load/save/clean perl data associated with a map
667
668	*cf::mapsupport::on_clean = sub {
669	my ($map) = @_;	1537	my ($self) = @_;
670		1538
671	my $path = $map->tmpname;	1539	# save first because save cedes
672	defined $path or return;	1540	$self->save;
673		1541
674	unlink "$path.cfperl";	1542	my $lock = cf::lock_acquire "map_data:" . $self->path;
675	unlink "$path.pst";
676	};
677		1543
678	*cf::mapsupport::on_swapin =	1544	return if $self->players;
679	*cf::mapsupport::on_load = sub {	1545	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1546	return if $self->{deny_save};
		1547
		1548	$self->clear;
		1549	$self->in_memory (cf::MAP_SWAPPED);
		1550	}
		1551
		1552	sub reset_at {
680	my ($map) = @_;	1553	my ($self) = @_;
681		1554
682	my $path = $map->tmpname;	1555	# TODO: safety, remove and allow resettable per-player maps
683	$path = $map->path unless defined $path;	1556	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1557	return 1e99 if $self->{deny_reset};
684		1558
685	open my $fh, "<:raw", "$path.cfperl"	1559	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
686	or return; # no perl data	1560	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
687		1561
688	my $data = Storable::thaw do { local $/; <$fh> };	1562	$time + $to
		1563	}
689		1564
690	$data->{version} <= 1	1565	sub should_reset {
		1566	my ($self) = @_;
		1567
		1568	$self->reset_at <= $cf::RUNTIME
		1569	}
		1570
		1571	sub reset {
		1572	my ($self) = @_;
		1573
		1574	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1575
		1576	return if $self->players;
		1577	return if $self->isa ("ext::map_per_player");#d#
		1578
		1579	warn "resetting map ", $self->path;#d#
		1580
		1581	delete $cf::MAP{$self->path};
		1582
		1583	$self->in_memory (cf::MAP_SWAPPED);
		1584	$self->clear;
		1585
		1586	$_->clear_links_to ($self) for values %cf::MAP;
		1587
		1588	$self->unlink_save;
		1589	$self->destroy;
		1590	}
		1591
		1592	my $nuke_counter = "aaaa";
		1593
		1594	sub nuke {
		1595	my ($self) = @_;
		1596
		1597	delete $cf::MAP{$self->path};
		1598
		1599	$self->unlink_save;
		1600
		1601	bless $self, "cf::map";
		1602	delete $self->{deny_reset};
		1603	$self->{deny_save} = 1;
		1604	$self->reset_timeout (1);
		1605	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1606
		1607	$cf::MAP{$self->path} = $self;
		1608
		1609	$self->reset; # polite request, might not happen
		1610	}
		1611
		1612	=item cf::map::unique_maps
		1613
		1614	Returns an arrayref of paths of all shared maps that have
		1615	instantiated unique items. May block.
		1616
		1617	=cut
		1618
		1619	sub unique_maps() {
		1620	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
691	or return; # too new	1621	or return;
692		1622
693	$map->_set_obs ($data->{obs});	1623	my @paths;
694	};
695		1624
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	1625	for (@$files) {
		1626	utf8::decode $_;
		1627	next if /\.pst$/;
		1628	next unless /^$PATH_SEP/o;
697		1629
698	#############################################################################	1630	s/\.map$//;
699	# load/save perl data associated with player->ob objects	1631	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	},	1632	}
717	;
718		1633
719	#############################################################################	1634	\@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	}	1635	}
732		1636
		1637	package cf;
		1638
		1639	=back
		1640
		1641	=head3 cf::object
		1642
		1643	=cut
		1644
		1645	package cf::object;
		1646
		1647	=over 4
		1648
		1649	=item $ob->inv_recursive
		1650
		1651	Returns the inventory of the object _and_ their inventories, recursively.
		1652
		1653	=cut
		1654
		1655	sub inv_recursive_;
		1656	sub inv_recursive_ {
		1657	map { $_, inv_recursive_ $_->inv } @_
		1658	}
		1659
		1660	sub inv_recursive {
		1661	inv_recursive_ inv $_[0]
		1662	}
		1663
		1664	package cf;
		1665
		1666	=back
		1667
		1668	=head3 cf::object::player
		1669
		1670	=over 4
		1671
733	=item $player->reply ($npc, $msg[, $flags])	1672	=item $player_object->reply ($npc, $msg[, $flags])
734		1673
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1674	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	1675	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1676	dialogue with the given NPC character.
738		1677
739	=cut	1678	=cut
740		1679
741	# rough implementation of a future "reply" method that works	1680	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1681	# with dialog boxes.
		1682	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1683	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1684	my ($self, $npc, $msg, $flags) = @_;
745		1685
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1686	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1687
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1691	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1692	$self->message ($msg, $flags);
753	}	1693	}
754	}	1694	}
755		1695
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1696	=item $player_object->may ("access")
757		1697
758	Sends an ext reply to the player.	1698	Returns wether the given player is authorized to access resource "access"
		1699	(e.g. "command_wizcast").
759		1700
760	=cut	1701	=cut
761		1702
762	sub cf::player::ext_reply($$$%) {	1703	sub cf::object::player::may {
		1704	my ($self, $access) = @_;
		1705
		1706	$self->flag (cf::FLAG_WIZ) ||
		1707	(ref $cf::CFG{"may_$access"}
		1708	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1709	: $cf::CFG{"may_$access"})
		1710	}
		1711
		1712	=item $player_object->enter_link
		1713
		1714	Freezes the player and moves him/her to a special map (C<{link}>).
		1715
		1716	The player should be reasonably safe there for short amounts of time. You
		1717	I<MUST> call C<leave_link> as soon as possible, though.
		1718
		1719	Will never block.
		1720
		1721	=item $player_object->leave_link ($map, $x, $y)
		1722
		1723	Moves the player out of the special C<{link}> map onto the specified
		1724	map. If the map is not valid (or omitted), the player will be moved back
		1725	to the location he/she was before the call to C<enter_link>, or, if that
		1726	fails, to the emergency map position.
		1727
		1728	Might block.
		1729
		1730	=cut
		1731
		1732	sub link_map {
		1733	unless ($LINK_MAP) {
		1734	$LINK_MAP = cf::map::find "{link}"
		1735	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1736	$LINK_MAP->load;
		1737	}
		1738
		1739	$LINK_MAP
		1740	}
		1741
		1742	sub cf::object::player::enter_link {
		1743	my ($self) = @_;
		1744
		1745	$self->deactivate_recursive;
		1746
		1747	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1748
		1749	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1750	if $self->map;
		1751
		1752	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1753	}
		1754
		1755	sub cf::object::player::leave_link {
		1756	my ($self, $map, $x, $y) = @_;
		1757
		1758	my $link_pos = delete $self->{_link_pos};
		1759
		1760	unless ($map) {
		1761	# restore original map position
		1762	($map, $x, $y) = @{ $link_pos || [] };
		1763	$map = cf::map::find $map;
		1764
		1765	unless ($map) {
		1766	($map, $x, $y) = @$EMERGENCY_POSITION;
		1767	$map = cf::map::find $map
		1768	or die "FATAL: cannot load emergency map\n";
		1769	}
		1770	}
		1771
		1772	($x, $y) = (-1, -1)
		1773	unless (defined $x) && (defined $y);
		1774
		1775	# use -1 or undef as default coordinates, not 0, 0
		1776	($x, $y) = ($map->enter_x, $map->enter_y)
		1777	if $x <=0 && $y <= 0;
		1778
		1779	$map->load;
		1780	$map->load_diag;
		1781
		1782	return unless $self->contr->active;
		1783	$self->activate_recursive;
		1784	$self->enter_map ($map, $x, $y);
		1785	}
		1786
		1787	cf::player->attach (
		1788	on_logout => sub {
		1789	my ($pl) = @_;
		1790
		1791	# abort map switching before logout
		1792	if ($pl->ob->{_link_pos}) {
		1793	cf::sync_job {
		1794	$pl->ob->leave_link
		1795	};
		1796	}
		1797	},
		1798	on_login => sub {
		1799	my ($pl) = @_;
		1800
		1801	# try to abort aborted map switching on player login :)
		1802	# should happen only on crashes
		1803	if ($pl->ob->{_link_pos}) {
		1804	$pl->ob->enter_link;
		1805	(async {
		1806	# we need this sleep as the login has a concurrent enter_exit running
		1807	# and this sleep increases chances of the player not ending up in scorn
		1808	$pl->ob->reply (undef,
		1809	"There was an internal problem at your last logout, "
		1810	. "the server will try to bring you to your intended destination in a second.",
		1811	cf::NDI_RED);
		1812	Coro::Timer::sleep 1;
		1813	$pl->ob->leave_link;
		1814	})->prio (2);
		1815	}
		1816	},
		1817	);
		1818
		1819	=item $player_object->goto ($path, $x, $y)
		1820
		1821	=cut
		1822
		1823	sub cf::object::player::goto {
		1824	my ($self, $path, $x, $y) = @_;
		1825
		1826	$self->enter_link;
		1827
		1828	(async {
		1829	my $map = cf::map::find $path;
		1830	$map = $map->customise_for ($self) if $map;
		1831
		1832	# warn "entering ", $map->path, " at ($x, $y)\n"
		1833	# if $map;
		1834
		1835	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1836
		1837	$self->leave_link ($map, $x, $y);
		1838	})->prio (1);
		1839	}
		1840
		1841	=item $player_object->enter_exit ($exit_object)
		1842
		1843	=cut
		1844
		1845	sub parse_random_map_params {
		1846	my ($spec) = @_;
		1847
		1848	my $rmp = { # defaults
		1849	xsize => (cf::rndm 15, 40),
		1850	ysize => (cf::rndm 15, 40),
		1851	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1852	#layout => string,
		1853	};
		1854
		1855	for (split /\n/, $spec) {
		1856	my ($k, $v) = split /\s+/, $_, 2;
		1857
		1858	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1859	}
		1860
		1861	$rmp
		1862	}
		1863
		1864	sub prepare_random_map {
		1865	my ($exit) = @_;
		1866
		1867	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1868
		1869	# all this does is basically replace the /! path by
		1870	# a new random map path (?random/...) with a seed
		1871	# that depends on the exit object
		1872
		1873	my $rmp = parse_random_map_params $exit->msg;
		1874
		1875	if ($exit->map) {
		1876	$rmp->{region} = $exit->map->region_name;
		1877	$rmp->{origin_map} = $exit->map->path;
		1878	$rmp->{origin_x} = $exit->x;
		1879	$rmp->{origin_y} = $exit->y;
		1880	}
		1881
		1882	$rmp->{random_seed} ||= $exit->random_seed;
		1883
		1884	my $data = cf::to_json $rmp;
		1885	my $md5 = Digest::MD5::md5_hex $data;
		1886	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1887
		1888	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1889	aio_write $fh, 0, (length $data), $data, 0;
		1890	undef $fh;
		1891	aio_rename "$meta~", $meta;
		1892
		1893	$exit->slaying ("?random/$md5");
		1894	$exit->msg (undef);
		1895	}
		1896	}
		1897
		1898	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1899	my ($self, $exit) = @_;
764		1900
765	$msg{msgid} = $id;	1901	return unless $self->type == cf::PLAYER;
766		1902
767	$self->send ("ext " . to_json \%msg);	1903	$self->enter_link;
768	}
769		1904
770	#############################################################################	1905	(async {
771	# map scripting support	1906	$self->deactivate_recursive; # just to be sure
		1907	unless (eval {
		1908	prepare_random_map $exit
		1909	if $exit->slaying eq "/!";
		1910
		1911	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1912	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1913
		1914	1;
		1915	}) {
		1916	$self->message ("Something went wrong deep within the crossfire server. "
		1917	. "I'll try to bring you back to the map you were before. "
		1918	. "Please report this to the dungeon master!",
		1919	cf::NDI_UNIQUE | cf::NDI_RED);
		1920
		1921	warn "ERROR in enter_exit: $@";
		1922	$self->leave_link;
		1923	}
		1924	})->prio (1);
		1925	}
		1926
		1927	=head3 cf::client
		1928
		1929	=over 4
		1930
		1931	=item $client->send_drawinfo ($text, $flags)
		1932
		1933	Sends a drawinfo packet to the client. Circumvents output buffering so
		1934	should not be used under normal circumstances.
		1935
		1936	=cut
		1937
		1938	sub cf::client::send_drawinfo {
		1939	my ($self, $text, $flags) = @_;
		1940
		1941	utf8::encode $text;
		1942	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1943	}
		1944
		1945
		1946	=item $success = $client->query ($flags, "text", \&cb)
		1947
		1948	Queues a query to the client, calling the given callback with
		1949	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1950	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1951
		1952	Queries can fail, so check the return code. Or don't, as queries will become
		1953	reliable at some point in the future.
		1954
		1955	=cut
		1956
		1957	sub cf::client::query {
		1958	my ($self, $flags, $text, $cb) = @_;
		1959
		1960	return unless $self->state == ST_PLAYING
		1961	|| $self->state == ST_SETUP
		1962	|| $self->state == ST_CUSTOM;
		1963
		1964	$self->state (ST_CUSTOM);
		1965
		1966	utf8::encode $text;
		1967	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1968
		1969	$self->send_packet ($self->{query_queue}[0][0])
		1970	if @{ $self->{query_queue} } == 1;
		1971	}
		1972
		1973	cf::client->attach (
		1974	on_reply => sub {
		1975	my ($ns, $msg) = @_;
		1976
		1977	# this weird shuffling is so that direct followup queries
		1978	# get handled first
		1979	my $queue = delete $ns->{query_queue}
		1980	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1981
		1982	(shift @$queue)->[1]->($msg);
		1983
		1984	push @{ $ns->{query_queue} }, @$queue;
		1985
		1986	if (@{ $ns->{query_queue} } == @$queue) {
		1987	if (@$queue) {
		1988	$ns->send_packet ($ns->{query_queue}[0][0]);
		1989	} else {
		1990	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1991	}
		1992	}
		1993	},
		1994	);
		1995
		1996	=item $client->async (\&cb)
		1997
		1998	Create a new coroutine, running the specified callback. The coroutine will
		1999	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2000	or loss of connection).
		2001
		2002	=cut
		2003
		2004	sub cf::client::async {
		2005	my ($self, $cb) = @_;
		2006
		2007	my $coro = &Coro::async ($cb);
		2008
		2009	$coro->on_destroy (sub {
		2010	delete $self->{_coro}{$coro+0};
		2011	});
		2012
		2013	$self->{_coro}{$coro+0} = $coro;
		2014
		2015	$coro
		2016	}
		2017
		2018	cf::client->attach (
		2019	on_destroy => sub {
		2020	my ($ns) = @_;
		2021
		2022	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2023	},
		2024	);
		2025
		2026	=back
		2027
		2028
		2029	=head2 SAFE SCRIPTING
		2030
		2031	Functions that provide a safe environment to compile and execute
		2032	snippets of perl code without them endangering the safety of the server
		2033	itself. Looping constructs, I/O operators and other built-in functionality
		2034	is not available in the safe scripting environment, and the number of
		2035	functions and methods that can be called is greatly reduced.
		2036
		2037	=cut
772		2038
773	our $safe = new Safe "safe";	2039	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	2040	our $safe_hole = new Safe::Hole;
775		2041
776	$SIG{FPE} = 'IGNORE';	2042	$SIG{FPE} = 'IGNORE';
777		2043
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2044	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		2045
780	# here we export the classes and methods available to script code	2046	# here we export the classes and methods available to script code
781		2047
		2048	=pod
		2049
		2050	The following fucntions and emthods are available within a safe environment:
		2051
		2052	cf::object contr pay_amount pay_player map
		2053	cf::object::player player
		2054	cf::player peaceful
		2055	cf::map trigger
		2056
		2057	=cut
		2058
782	for (	2059	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	2060	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	2061	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	2062	["cf::player" => qw(peaceful)],
		2063	["cf::map" => qw(trigger)],
786	) {	2064	) {
787	no strict 'refs';	2065	no strict 'refs';
788	my ($pkg, @funs) = @$_;	2066	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2067	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	2068	for @funs;
791	}	2069	}
		2070
		2071	=over 4
		2072
		2073	=item @retval = safe_eval $code, [var => value, ...]
		2074
		2075	Compiled and executes the given perl code snippet. additional var/value
		2076	pairs result in temporary local (my) scalar variables of the given name
		2077	that are available in the code snippet. Example:
		2078
		2079	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2080
		2081	=cut
792		2082
793	sub safe_eval($;@) {	2083	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	2084	my ($code, %vars) = @_;
795		2085
796	my $qcode = $code;	2086	my $qcode = $code;
…		…
819	}	2109	}
820		2110
821	wantarray ? @res : $res[0]	2111	wantarray ? @res : $res[0]
822	}	2112	}
823		2113
		2114	=item cf::register_script_function $function => $cb
		2115
		2116	Register a function that can be called from within map/npc scripts. The
		2117	function should be reasonably secure and should be put into a package name
		2118	like the extension.
		2119
		2120	Example: register a function that gets called whenever a map script calls
		2121	C<rent::overview>, as used by the C<rent> extension.
		2122
		2123	cf::register_script_function "rent::overview" => sub {
		2124	...
		2125	};
		2126
		2127	=cut
		2128
824	sub register_script_function {	2129	sub register_script_function {
825	my ($fun, $cb) = @_;	2130	my ($fun, $cb) = @_;
826		2131
827	no strict 'refs';	2132	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2133	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	2134	}
830		2135
		2136	=back
		2137
		2138	=cut
		2139
		2140	#############################################################################
		2141
		2142	=head2 EXTENSION DATABASE SUPPORT
		2143
		2144	Crossfire maintains a very simple database for extension use. It can
		2145	currently store anything that can be serialised using Storable, which
		2146	excludes objects.
		2147
		2148	The parameter C<$family> should best start with the name of the extension
		2149	using it, it should be unique.
		2150
		2151	=over 4
		2152
		2153	=item $hashref = cf::db_get $family
		2154
		2155	Return a hashref for use by the extension C<$family>, which can be
		2156	modified. After modifications, you have to call C<cf::db_dirty> or
		2157	C<cf::db_sync>.
		2158
		2159	=item $value = cf::db_get $family => $key
		2160
		2161	Returns a single value from the database
		2162
		2163	=item cf::db_put $family => $hashref
		2164
		2165	Stores the given family hashref into the database. Updates are delayed, if
		2166	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2167
		2168	=item cf::db_put $family => $key => $value
		2169
		2170	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2171	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2172
		2173	=item cf::db_dirty
		2174
		2175	Marks the database as dirty, to be updated at a later time.
		2176
		2177	=item cf::db_sync
		2178
		2179	Immediately write the database to disk I<if it is dirty>.
		2180
		2181	=cut
		2182
		2183	our $DB;
		2184
		2185	{
		2186	my $path = cf::localdir . "/database.pst";
		2187
		2188	sub db_load() {
		2189	$DB = stat $path ? Storable::retrieve $path : { };
		2190	}
		2191
		2192	my $pid;
		2193
		2194	sub db_save() {
		2195	waitpid $pid, 0 if $pid;
		2196	if (0 == ($pid = fork)) {
		2197	$DB->{_meta}{version} = 1;
		2198	Storable::nstore $DB, "$path~";
		2199	rename "$path~", $path;
		2200	cf::_exit 0 if defined $pid;
		2201	}
		2202	}
		2203
		2204	my $dirty;
		2205
		2206	sub db_sync() {
		2207	db_save if $dirty;
		2208	undef $dirty;
		2209	}
		2210
		2211	my $idle = Event->idle (
		2212	reentrant => 0,
		2213	min => 10,
		2214	max => 20,
		2215	repeat => 0,
		2216	data => WF_AUTOCANCEL,
		2217	cb => \&db_sync,
		2218	);
		2219
		2220	sub db_dirty() {
		2221	$dirty = 1;
		2222	$idle->start;
		2223	}
		2224
		2225	sub db_get($;$) {
		2226	@_ >= 2
		2227	? $DB->{$_[0]}{$_[1]}
		2228	: ($DB->{$_[0]} ||= { })
		2229	}
		2230
		2231	sub db_put($$;$) {
		2232	if (@_ >= 3) {
		2233	$DB->{$_[0]}{$_[1]} = $_[2];
		2234	} else {
		2235	$DB->{$_[0]} = $_[1];
		2236	}
		2237	db_dirty;
		2238	}
		2239
		2240	cf::global->attach (
		2241	prio => 10000,
		2242	on_cleanup => sub {
		2243	db_sync;
		2244	},
		2245	);
		2246	}
		2247
831	#############################################################################	2248	#############################################################################
832	# the server's main()	2249	# the server's main()
833		2250
		2251	sub cfg_load {
		2252	open my $fh, "<:utf8", cf::confdir . "/config"
		2253	or return;
		2254
		2255	local $/;
		2256	*CFG = YAML::Syck::Load <$fh>;
		2257
		2258	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2259
		2260	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2261	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2262
		2263	if (exists $CFG{mlockall}) {
		2264	eval {
		2265	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2266	and die "WARNING: m(un)lockall failed: $!\n";
		2267	};
		2268	warn $@ if $@;
		2269	}
		2270	}
		2271
834	sub main {	2272	sub main {
		2273	# we must not ever block the main coroutine
		2274	local $Coro::idle = sub {
		2275	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2276	(async {
		2277	Event::one_event;
		2278	})->prio (Coro::PRIO_MAX);
		2279	};
		2280
		2281	cfg_load;
		2282	db_load;
		2283	load_extensions;
		2284
		2285	$TICK_WATCHER->start;
835	Event::loop;	2286	Event::loop;
836	}	2287	}
837		2288
838	#############################################################################	2289	#############################################################################
839	# initialisation	2290	# initialisation and cleanup
840		2291
841	register "<global>", __PACKAGE__;	2292	# install some emergency cleanup handlers
		2293	BEGIN {
		2294	for my $signal (qw(INT HUP TERM)) {
		2295	Event->signal (
		2296	reentrant => 0,
		2297	data => WF_AUTOCANCEL,
		2298	signal => $signal,
		2299	prio => 0,
		2300	cb => sub {
		2301	cf::cleanup "SIG$signal";
		2302	},
		2303	);
		2304	}
		2305	}
		2306
		2307	sub emergency_save() {
		2308	my $freeze_guard = cf::freeze_mainloop;
		2309
		2310	warn "enter emergency perl save\n";
		2311
		2312	cf::sync_job {
		2313	# use a peculiar iteration method to avoid tripping on perl
		2314	# refcount bugs in for. also avoids problems with players
		2315	# and maps saved/destroyed asynchronously.
		2316	warn "begin emergency player save\n";
		2317	for my $login (keys %cf::PLAYER) {
		2318	my $pl = $cf::PLAYER{$login} or next;
		2319	$pl->valid or next;
		2320	$pl->save;
		2321	}
		2322	warn "end emergency player save\n";
		2323
		2324	warn "begin emergency map save\n";
		2325	for my $path (keys %cf::MAP) {
		2326	my $map = $cf::MAP{$path} or next;
		2327	$map->valid or next;
		2328	$map->save;
		2329	}
		2330	warn "end emergency map save\n";
		2331	};
		2332
		2333	warn "leave emergency perl save\n";
		2334	}
		2335
		2336	sub reload() {
		2337	# can/must only be called in main
		2338	if ($Coro::current != $Coro::main) {
		2339	warn "can only reload from main coroutine";
		2340	return;
		2341	}
		2342
		2343	warn "reloading...";
		2344
		2345	warn "cancelling server ticker";
		2346	$TICK_WATCHER->cancel;
		2347
		2348	cf::emergency_save;
		2349
		2350	eval {
		2351	# if anything goes wrong in here, we should simply crash as we already saved
		2352
		2353	warn "syncing database to disk";
		2354	cf::db_sync;
		2355
		2356	warn "cancelling all WF_AUTOCANCEL watchers";
		2357	for (Event::all_watchers) {
		2358	$_->cancel if $_->data & WF_AUTOCANCEL;
		2359	}
		2360
		2361	warn "flushing outstanding aio requests";
		2362	for (;;) {
		2363	IO::AIO::flush;
		2364	Coro::cede;
		2365	last unless IO::AIO::nreqs;
		2366	warn "iterate...";
		2367	}
		2368
		2369	warn "cancelling all extension coros";
		2370	$_->cancel for values %EXT_CORO;
		2371	%EXT_CORO = ();
		2372
		2373	warn "removing commands";
		2374	%COMMAND = ();
		2375
		2376	warn "removing ext commands";
		2377	%EXTCMD = ();
		2378
		2379	warn "unloading/nuking all extensions";
		2380	for my $pkg (@EXTS) {
		2381	warn "... unloading $pkg";
		2382
		2383	if (my $cb = $pkg->can ("unload")) {
		2384	eval {
		2385	$cb->($pkg);
		2386	1
		2387	} or warn "$pkg unloaded, but with errors: $@";
		2388	}
		2389
		2390	warn "... nuking $pkg";
		2391	Symbol::delete_package $pkg;
		2392	}
		2393
		2394	warn "unloading all perl modules loaded from $LIBDIR";
		2395	while (my ($k, $v) = each %INC) {
		2396	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2397
		2398	warn "... unloading $k";
		2399	delete $INC{$k};
		2400
		2401	$k =~ s/\.pm$//;
		2402	$k =~ s/\//::/g;
		2403
		2404	if (my $cb = $k->can ("unload_module")) {
		2405	$cb->();
		2406	}
		2407
		2408	Symbol::delete_package $k;
		2409	}
		2410
		2411	warn "getting rid of safe::, as good as possible";
		2412	Symbol::delete_package "safe::$_"
		2413	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2414
		2415	warn "unloading cf.pm \"a bit\"";
		2416	delete $INC{"cf.pm"};
		2417
		2418	# don't, removes xs symbols, too,
		2419	# and global variables created in xs
		2420	#Symbol::delete_package __PACKAGE__;
		2421
		2422	warn "unload completed, starting to reload now";
		2423
		2424	warn "reloading cf.pm";
		2425	require cf;
		2426	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2427
		2428	warn "loading config and database again";
		2429	cf::cfg_load;
		2430	cf::db_load;
		2431
		2432	warn "loading extensions";
		2433	cf::load_extensions;
		2434
		2435	warn "reattaching attachments to objects/players";
		2436	_global_reattach;
		2437	warn "reattaching attachments to maps";
		2438	reattach $_ for values %MAP;
		2439
		2440	warn "restarting server ticker";
		2441
		2442	$TICK_WATCHER->start;
		2443	};
		2444
		2445	if ($@) {
		2446	warn $@;
		2447	warn "error while reloading, exiting.";
		2448	exit 1;
		2449	}
		2450
		2451	warn "reloaded";
		2452	};
		2453
		2454	our $RELOAD_WATCHER; # used only during reload
		2455
		2456	register_command "reload" => sub {
		2457	my ($who, $arg) = @_;
		2458
		2459	if ($who->flag (FLAG_WIZ)) {
		2460	$who->message ("reloading server.");
		2461
		2462	# doing reload synchronously and two reloads happen back-to-back,
		2463	# coro crashes during coro_state_free->destroy here.
		2464
		2465	$RELOAD_WATCHER ||= Event->timer (
		2466	reentrant => 0,
		2467	after => 0,
		2468	data => WF_AUTOCANCEL,
		2469	cb => sub {
		2470	reload;
		2471	undef $RELOAD_WATCHER;
		2472	},
		2473	);
		2474	}
		2475	};
842		2476
843	unshift @INC, $LIBDIR;	2477	unshift @INC, $LIBDIR;
844		2478
845	load_extensions;	2479	my $bug_warning = 0;
846		2480
847	$TICK_WATCHER = Event->timer (	2481	$TICK_WATCHER = Event->timer (
		2482	reentrant => 0,
		2483	parked => 1,
848	prio => 1,	2484	prio => 0,
849	at => $NEXT_TICK || 1,	2485	at => $NEXT_TICK || $TICK,
		2486	data => WF_AUTOCANCEL,
850	cb => sub {	2487	cb => sub {
		2488	if ($Coro::current != $Coro::main) {
		2489	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2490	unless ++$bug_warning > 10;
		2491	return;
		2492	}
		2493
		2494	$NOW = Event::time;
		2495
851	cf::server_tick; # one server iteration	2496	cf::server_tick; # one server iteration
852		2497	$RUNTIME += $TICK;
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2498	$NEXT_TICK += $TICK;
855		2499
		2500	$WAIT_FOR_TICK->broadcast;
		2501	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2502
		2503	Event::sweep;
		2504	Coro::cede_notself;
		2505
		2506	# my $AFTER = Event::time;
		2507	# warn $AFTER - $NOW;#d#
		2508
856	# if we are delayed by four ticks, skip them all	2509	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2510	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2511
859	$TICK_WATCHER->at ($NEXT_TICK);	2512	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2513	$TICK_WATCHER->start;
861	},	2514	},
862	);	2515	);
863		2516
		2517	IO::AIO::max_poll_time $TICK * 0.1;
		2518
		2519	undef $Coro::AIO::WATCHER;
		2520	$AIO_POLL_WATCHER = Event->io (
		2521	reentrant => 0,
		2522	fd => IO::AIO::poll_fileno,
		2523	poll => 'r',
		2524	prio => 6,
		2525	data => WF_AUTOCANCEL,
		2526	cb => \&IO::AIO::poll_cb,
		2527	);
		2528
		2529	$WRITE_RUNTIME_WATCHER = Event->timer (
		2530	reentrant => 0,
		2531	data => WF_AUTOCANCEL,
		2532	after => 1,
		2533	interval => 10,
		2534	prio => 6, # keep it lowest so it acts like a watchdog
		2535	cb => Coro::unblock_sub {
		2536	write_runtime
		2537	or warn "ERROR: unable to write runtime file: $!";
		2538	},
		2539	);
		2540
		2541	END { cf::emergency_save }
		2542
864	1	2543	1
865		2544

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