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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.43 by root, Fri Aug 25 17:11:53 2006 UTC vs.
Revision 1.194 by root, Wed Jan 24 22:42:49 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
		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 @PLUGIN_EVENT;	45	our $LIBDIR = datadir . "/ext";
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";
22		46
23	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
25	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
26		131
27	BEGIN {	132	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
32	$msg .= "\n"	137	$msg .= "\n"
33	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
34		139
35	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
37	};	141	};
38	}	142	}
39		143
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
41		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
42	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
43	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
44	my ($prefix, $class) = @_;	148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
45
46	no strict 'refs';
47
48	for my $prop (keys %PROP_TYPE) {
49	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
50	my $sub = lc $1;
51
52	my $type = $PROP_TYPE{$prop};
53	my $idx = $PROP_IDX {$prop};
54
55	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
56	$_[0]->get_property ($type, $idx)
57	};
58
59	*{"$class\::set_$sub"} = sub {
60	$_[0]->set_property ($type, $idx, $_[1]);
61	} unless $ignore_set{$prop};
62	}
63	}
64
65	# auto-generate most of the API
66
67	prop_gen OBJECT_PROP => "cf::object";
68	# CFAPI_OBJECT_ANIMATION?
69	prop_gen PLAYER_PROP => "cf::object::player";
70
71	prop_gen MAP_PROP => "cf::map";
72	prop_gen ARCH_PROP => "cf::arch";
73
74	# guessed hierarchies
75
76	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@safe::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78		150
79	# 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
80	# within the Safe compartment.	152	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
82	no strict 'refs';	160	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	162	}
85		163
86	$Event::DIED = sub {	164	$Event::DIED = sub {
87	warn "error in event callback: @_";	165	warn "error in event callback: @_";
88	};	166	};
89		167
90	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
91	my @exts;	169
92	my @hook;	170	=over 4
93	my %command;	171
94	my %extcmd;	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	}
		194
		195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
		202
		203	sub from_json($) {
		204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		205	JSON::Syck::Load $_[0]
		206	}
		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
		214	sub to_json($) {
		215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		216	JSON::Syck::Dump $_[0]
		217	}
		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
95		376
96	#############################################################################	377	#############################################################################
97	# "new" plug-in system
98		378
99	=item cf::object::attach ... # NYI	379	=head2 ATTACHABLE OBJECTS
100		380
101	=item cf::attach_global ...	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.
102		384
103	=item cf::attach_to_type ...	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+).
104		388
105	=item cf::attach_to_objects ...	389	=over 4
106		390
107	=item cf::attach_to_players ...	391	=item $attachable->attach ($attachment, key => $value...)
108		392
109	=item cf::attach_to_maps ...	393	=item $attachable->detach ($attachment)
110		394
111	prio => $number, # lower is earlier	395	Attach/detach a pre-registered attachment to a specific object and give it
112	on_xxx => \&cb,	396	the specified key/value pairs as arguments.
		397
		398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
		400
		401	$obj->attach (minesweeper => width => 10, height => 10);
		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:
		445
		446	=over 4
		447
		448	=item prio => $number
		449
		450	Set the priority for all following handlers/hooks (unless overwritten
		451	by another C<prio> setting). Lower priority handlers get executed
		452	earlier. The default priority is C<0>, and many built-in handlers are
		453	registered at priority C<-1000>, so lower priorities should not be used
		454	unless you know what you are doing.
		455
		456	=item type => $type
		457
		458	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		459	given type of objects only (the additional parameter C<subtype> can be
		460	used to further limit to the given subtype).
		461
		462	=item on_I<event> => \&cb
		463
		464	Call the given code reference whenever the named event happens (event is
		465	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		466	handlers are recognised generally depends on the type of object these
		467	handlers attach to).
		468
		469	See F<include/eventinc.h> for the full list of events supported, and their
		470	class.
		471
113	package => package::,	472	=item package => package::
		473
		474	Look for sub functions of the name C<< on_I<event> >> in the given
		475	package and register them. Only handlers for eevents supported by the
		476	object/class are recognised.
		477
		478	=back
		479
		480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
		482
		483	cf::object::attachment sockpuppet =>
		484	on_skill_attack => sub {
		485	my ($self, $victim) = @_;
		486	...
		487	}
		488	}
		489
		490	=item $attachable->valid
		491
		492	Just because you have a perl object does not mean that the corresponding
		493	C-level object still exists. If you try to access an object that has no
		494	valid C counterpart anymore you get an exception at runtime. This method
		495	can be used to test for existence of the C object part without causing an
		496	exception.
114		497
115	=cut	498	=cut
116		499
117	# 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
118	our @CB_GLOBAL = (); # registry for all global events	501	our @CB_GLOBAL = (); # registry for all global events
119	our @CB_OBJECT = ();	502	our @CB_ATTACHABLE = (); # registry for all attachables
		503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
120	our @CB_PLAYER = ();	504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
121	our @CB_TYPE = (); # registry for type (cf-object class) based events	506	our @CB_TYPE = (); # registry for type (cf-object class) based events
122	our @CB_MAP = ();	507	our @CB_MAP = ();
123		508
		509	my %attachment;
		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
124	sub _attach_cb($\%$$$) {	517	sub _attach_cb($$$$) {
125	my ($registry, $undo, $event, $prio, $cb) = @_;	518	my ($registry, $event, $prio, $cb) = @_;
126		519
127	use sort 'stable';	520	use sort 'stable';
128		521
129	$cb = [$prio, $cb];	522	$cb = [$prio, $cb];
130		523
131	@{$registry->[$event]} = sort	524	@{$registry->[$event]} = sort
132	{ $a->[0] cmp $b->[0] }	525	{ $a->[0] cmp $b->[0] }
133	@{$registry->[$event] || []}, $cb;	526	@{$registry->[$event] || []}, $cb;
134
135	push @{$undo->{cb}}, [$event, $cb];
136	}	527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
137		531
138	# attach handles attaching event callbacks	532	# attach handles attaching event callbacks
139	# 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
140	# registry (== where the callback attaches to).	534	# registry (== where the callback attaches to).
141	sub _attach(\@$\@) {	535	sub _attach {
142	my ($registry, $klass, $arg) = @_;	536	my ($registry, $klass, @arg) = @_;
143		537
		538	my $object_type;
144	my $prio = 0;	539	my $prio = 0;
145
146	my %undo = (
147	registry => $registry,
148	cb => [],
149	);
150
151	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;
152		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	}
		546
153	while (@$arg) {	547	while (@arg) {
154	my $type = shift @$arg;	548	my $type = shift @arg;
155		549
156	if ($type eq "prio") {	550	if ($type eq "prio") {
157	$prio = shift @$arg;	551	$prio = shift @arg;
		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] ||= [];
158		561
159	} elsif ($type eq "package") {	562	} elsif ($type eq "package") {
160	my $pkg = shift @$arg;	563	my $pkg = shift @arg;
161		564
162	while (my ($name, $id) = each %cb_id) {	565	while (my ($name, $id) = each %cb_id) {
163	if (my $cb = $pkg->can ($name)) {	566	if (my $cb = $pkg->can ($name)) {
164	_attach_cb $registry, %undo, $id, $prio, $cb;	567	_attach_cb $registry, $id, $prio, $cb;
165	}	568	}
166	}	569	}
167		570
168	} elsif (exists $cb_id{$type}) {	571	} elsif (exists $cb_id{$type}) {
169	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;	572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
170		573
171	} elsif (ref $type) {	574	} elsif (ref $type) {
172	warn "attaching objects not supported, ignoring.\n";	575	warn "attaching objects not supported, ignoring.\n";
173		576
174	} else {	577	} else {
175	shift @$arg;	578	shift @arg;
176	warn "attach argument '$type' not supported, ignoring.\n";	579	warn "attach argument '$type' not supported, ignoring.\n";
177	}	580	}
178	}	581	}
179
180	\%undo
181	}	582	}
182		583
183	sub cf::object::attach {	584	sub _object_attach {
184	die;	585	my ($obj, $name, %arg) = @_;
185	}
186		586
187	sub attach_global {	587	return if exists $obj->{_attachment}{$name};
188	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
189	}
190		588
191	sub attach_to_type {	589	if (my $attach = $attachment{$name}) {
192	my $type = shift;	590	my $registry = $obj->registry;
193	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
194	}
195		591
196	sub attach_to_objects {	592	for (@$attach) {
197	_attach @CB_OBJECT, KLASS_OBJECT, @_	593	my ($klass, @attach) = @$_;
198	}	594	_attach $registry, $klass, @attach;
		595	}
199		596
200	sub attach_to_players {	597	$obj->{$name} = \%arg;
201	_attach @CB_PLAYER, KLASS_PLAYER, @_	598	} else {
202	}	599	warn "object uses attachment '$name' that is not available, postponing.\n";
		600	}
203		601
204	sub attach_to_maps {	602	$obj->{_attachment}{$name} = undef;
205	_attach @CB_MAP, KLASS_MAP, @_	603	}
		604
		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 {
		615	my ($obj, $name) = @_;
		616
		617	if (ref $obj) {
		618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
		624
		625	sub cf::attachable::attached {
		626	my ($obj, $name) = @_;
		627
		628	exists $obj->{_attachment}{$name}
		629	}
		630
		631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
		636
		637	sub cf::\L$klass\E::attachment {
		638	my \$name = shift;
		639
		640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
206	}	644	}
207		645
208	our $override;	646	our $override;
		647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
209		648
210	sub override() {	649	sub override {
211	$override = 1	650	$override = 1;
		651	@invoke_results = ();
212	}	652	}
213		653
214	sub invoke {	654	sub do_invoke {
215	my $event = shift;	655	my $event = shift;
216	my $callbacks = shift;	656	my $callbacks = shift;
217		657
		658	@invoke_results = ();
		659
218	local $override;	660	local $override;
219		661
220	for (@$callbacks) {	662	for (@$callbacks) {
221	eval { &{$_->[1]} };	663	eval { &{$_->[1]} };
222		664
223	if ($@) {	665	if ($@) {
224	warn "$@";	666	warn "$@";
225	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
226	override;	668	override;
227	}	669	}
228		670
229	return 1 if $override;	671	return 1 if $override;
230	}	672	}
231		673
232	0	674	0
233	}	675	}
234		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
		690
235	#############################################################################	691	#############################################################################
236	# old plug-in events	692	# object support
237		693
238	sub inject_event {	694	sub reattach {
239	my $extension = shift;	695	# basically do the same as instantiate, without calling instantiate
240	my $event_code = shift;	696	my ($obj) = @_;
241		697
242	my $cb = $hook[$event_code]{$extension}	698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
		700	my $registry = $obj->registry;
		701
		702	@$registry = ();
		703
		704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		705
		706	for my $name (keys %{ $obj->{_attachment} || {} }) {
		707	if (my $attach = $attachment{$name}) {
		708	for (@$attach) {
		709	my ($klass, @attach) = @$_;
		710	_attach $registry, $klass, @attach;
		711	}
		712	} else {
		713	warn "object uses attachment '$name' that is not available, postponing.\n";
		714	}
		715	}
		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	);
		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, $data) >= 0
243	or return;	796	or return;
244		797
245	&$cb	798	unless (aio_stat "$filename.pst") {
246	}	799	(aio_load "$filename.pst", $av) >= 0
247
248	sub inject_global_event {
249	my $event = shift;
250
251	my $cb = $hook[$event]
252	or return;	800	or return;
253		801	$av = eval { (Storable::thaw $av)->{objs} };
254	List::Util::max map &$_, values %$cb
255	}
256
257	sub inject_command {
258	my ($name, $obj, $params) = @_;
259
260	for my $cmd (@{ $command{$name} }) {
261	$cmd->[1]->($obj, $params);
262	}	802	}
263		803
264	-1	804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
265	}	807	}
		808
		809	#############################################################################
		810	# command handling &c
		811
		812	=item cf::register_command $name => \&callback($ob,$args);
		813
		814	Register a callback for execution when the client sends the user command
		815	$name.
		816
		817	=cut
266		818
267	sub register_command {	819	sub register_command {
268	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
269		821
270	my $caller = caller;	822	my $caller = caller;
271	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
272		824
273	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
274	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
275	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
276		836
277	sub register_extcmd {	837	sub register_extcmd {
278	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
279		839
280	my $caller = caller;	840	$EXTCMD{$name} = $cb;
281	#warn "registering extcmd '$name' to '$caller'";
282
283	$extcmd{$name} = [$cb, $caller];
284	}	841	}
285		842
286	sub register {	843	cf::player->attach (
287	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
288		846
289	for my $idx (0 .. $#PLUGIN_EVENT) {	847	my $cb = $COMMAND{$name}
290	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {	848	or return;
291	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";	849
292	$hook[$idx]{$base} = $ref;	850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
293	}	852	}
		853
		854	cf::override;
294	}	855	},
295	}	856	on_extcmd => sub {
		857	my ($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	);
296		874
297	sub load_extension {	875	sub load_extension {
298	my ($path) = @_;	876	my ($path) = @_;
299		877
300	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
301	my $base = $1;	879	my $base = $1;
302	my $pkg = $1;	880	my $pkg = $1;
303	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
304	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
305		883
306	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
307		885
308	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
309	or die "$path: $!";	887	or die "$path: $!";
310		888
311	my $source =	889	my $source =
312	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
313	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
314	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
315	. "\n};\n1";	893	. "\n};\n1";
316		894
317	eval $source	895	unless (eval $source) {
318	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
		897	: "extension disabled.\n";
		898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		899	warn $@;
		900	warn "mandatory extension failed to load, exiting.\n";
		901	exit 1;
		902	}
		903	die $@;
		904	}
319		905
320	push @exts, $pkg;	906	push @EXTS, $pkg;
321	$ext_pkg{$base} = $pkg;
322
323	# no strict 'refs';
324	# @{"$pkg\::ISA"} = ext::;
325
326	register $base, $pkg;
327	}
328
329	sub unload_extension {
330	my ($pkg) = @_;
331
332	warn "removing extension $pkg\n";
333
334	# remove hooks
335	for my $idx (0 .. $#PLUGIN_EVENT) {
336	delete $hook[$idx]{$pkg};
337	}
338
339	# remove commands
340	for my $name (keys %command) {
341	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
342
343	if (@cb) {
344	$command{$name} = \@cb;
345	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
346	} else {
347	delete $command{$name};
348	delete $COMMAND{"$name\000"};
349	}
350	}
351
352	# remove extcmds
353	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
354	delete $extcmd{$name};
355	}
356
357	if (my $cb = $pkg->can ("unload")) {
358	eval {
359	$cb->($pkg);
360	1
361	} or warn "$pkg unloaded, but with errors: $@";
362	}
363
364	Symbol::delete_package $pkg;
365	}	907	}
366		908
367	sub load_extensions {	909	sub load_extensions {
368	my $LIBDIR = maps_directory "perl";
369
370	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
371	next unless -r $ext;	911	next unless -r $ext;
372	eval {	912	eval {
373	load_extension $ext;	913	load_extension $ext;
374	1	914	1
375	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
376	}	916	}
377	}	917	}
378		918
379	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 {
380	my ($msg) = @_;	1443	my ($map) = @_;
381		1444
382	$msg->("reloading...");	1445	my @diag; # diagonal neighbours
383		1446
384	eval {	1447	for (0 .. 3) {
385	# 1. cancel all watchers	1448	my $neigh = $map->tile_path ($_)
386	$_->cancel for Event::all_watchers;	1449	or next;
		1450	$neigh = find $neigh, $map
		1451	or next;
		1452	$neigh->load;
387		1453
388	# 2. unload all extensions	1454	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
389	for (@exts) {	1455	[$neigh->tile_path (($_ + 1) % 4), $neigh];
390	$msg->("unloading <$_>");	1456	}
391	unload_extension $_;
392	}
393		1457
394	# 3. unload all modules loaded from $LIBDIR	1458	for (@diag) {
395	while (my ($k, $v) = each %INC) {	1459	my $neigh = find @$_
396	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1460	or next;
		1461	$neigh->load;
		1462	}
		1463	}
397		1464
398	$msg->("removing <$k>");	1465	sub find_sync {
399	delete $INC{$k};	1466	my ($path, $origin) = @_;
400		1467
401	$k =~ s/\.pm$//;	1468	cf::sync_job { find $path, $origin }
402	$k =~ s/\//::/g;	1469	}
403		1470
404	if (my $cb = $k->can ("unload_module")) {	1471	sub do_load_sync {
405	$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};
406	}	1498	}
407
408	Symbol::delete_package $k;
409	}
410
411	# 4. get rid of safe::, as good as possible
412	Symbol::delete_package "safe::$_"
413	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
414
415	# 5. remove register_script_function callbacks
416	# TODO
417		1499	}
418	# 6. unload cf.pm "a bit"	1500	undef $MAP_PREFETCHER;
419	delete $INC{"cf.pm"};
420
421	# don't, removes xs symbols, too,
422	# and global variables created in xs
423	#Symbol::delete_package __PACKAGE__;
424
425	# 7. reload cf.pm
426	$msg->("reloading cf.pm");
427	require cf;
428	};	1501	};
429	$msg->($@) if $@;	1502	$MAP_PREFETCHER->prio (6);
430		1503
431	$msg->("reloaded");	1504	()
432	};	1505	}
433		1506
434	sub perl_reload() {	1507	sub save {
435	_perl_reload {	1508	my ($self) = @_;
436	warn $_[0];	1509
437	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;
438	};	1527	};
439	}
440		1528
441	register_command "perl-reload", 0, sub {	1529	if ($uniq) {
442	my ($who, $arg) = @_;	1530	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
443		1531	$self->_save_objects ($uniq, cf::IO_UNIQUES);
444	if ($who->flag (FLAG_WIZ)) {
445	_perl_reload {
446	warn $_[0];
447	$who->message ($_[0]);
448	};
449	}
450	};
451
452	#############################################################################
453	# utility functions
454
455	use JSON::Syck (); # TODO# replace by JSON::PC once working
456
457	sub from_json($) {
458	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
459	JSON::Syck::Load $_[0]
460	}
461
462	sub to_json($) {
463	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
464	JSON::Syck::Dump $_[0]
465	}
466
467	#############################################################################
468	# extcmd framework, basically convert ext <msg>
469	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
470
471	attach_global
472	on_extcmd => sub {
473	my ($pl, $buf) = @_;
474
475	my $msg = eval { from_json $buf };
476
477	if (ref $msg) {
478	if (my $cb = $extcmd{$msg->{msgtype}}) {
479	if (my %reply = $cb->[0]->($pl, $msg)) {
480	$pl->ext_reply ($msg->{msgid}, %reply);
481	}
482	}
483	} else {
484	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
485	}
486
487	cf::override;
488	},
489	;
490
491	#############################################################################
492	# load/save/clean perl data associated with a map
493
494	*cf::mapsupport::on_clean = sub {
495	my ($map) = @_;
496
497	my $path = $map->tmpname;
498	defined $path or return;
499
500	unlink "$path.cfperl";
501	};
502
503	*cf::mapsupport::on_swapin =
504	*cf::mapsupport::on_load = sub {
505	my ($map) = @_;
506
507	my $path = $map->tmpname;
508	$path = $map->path unless defined $path;
509
510	open my $fh, "<:raw", "$path.cfperl"
511	or return; # no perl data
512
513	my $data = Storable::thaw do { local $/; <$fh> };
514
515	$data->{version} <= 1
516	or return; # too new
517
518	$map->_set_obs ($data->{obs});
519	};
520
521	*cf::mapsupport::on_swapout = sub {
522	my ($map) = @_;
523
524	my $path = $map->tmpname;
525	$path = $map->path unless defined $path;
526
527	my $obs = $map->_get_obs;
528
529	if (defined $obs) {
530	open my $fh, ">:raw", "$path.cfperl"
531	or die "$path.cfperl: $!";
532
533	stat $path;
534
535	print $fh Storable::nfreeze {
536	size => (stat _)[7],
537	time => (stat _)[9],
538	version => 1,
539	obs => $obs,
540	};
541
542	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
543	} else {	1532	} else {
544	unlink "$path.cfperl";	1533	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
545	}
546	};
547
548	attach_to_maps prio => -10000, package => cf::mapsupport::;
549
550	#############################################################################
551	# load/save perl data associated with player->ob objects
552
553	sub all_objects(@) {
554	@_, map all_objects ($_->inv), @_
555	}
556
557	attach_to_players
558	on_load => sub {
559	my ($pl, $path) = @_;
560
561	for my $o (all_objects $pl->ob) {
562	if (my $value = $o->get_ob_key_value ("_perl_data")) {
563	$o->set_ob_key_value ("_perl_data");
564
565	%$o = %{ Storable::thaw pack "H*", $value };
566	}
567	}
568	},	1534	}
569	on_save => sub {	1535	}
570	my ($pl, $path) = @_;
571		1536
572	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)	1537	sub swap_out {
573	for grep %$_, all_objects $pl->ob;	1538	my ($self) = @_;
		1539
		1540	# save first because save cedes
		1541	$self->save;
		1542
		1543	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1544
		1545	return if $self->players;
		1546	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1547	return if $self->{deny_save};
		1548
		1549	$self->clear;
		1550	$self->in_memory (cf::MAP_SWAPPED);
		1551	}
		1552
		1553	sub reset_at {
		1554	my ($self) = @_;
		1555
		1556	# TODO: safety, remove and allow resettable per-player maps
		1557	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1558	return 1e99 if $self->{deny_reset};
		1559
		1560	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1561	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1562
		1563	$time + $to
		1564	}
		1565
		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
		1622	or return;
		1623
		1624	my @paths;
		1625
		1626	for (@$files) {
		1627	utf8::decode $_;
		1628	next if /\.pst$/;
		1629	next unless /^$PATH_SEP/o;
		1630
		1631	s/\.map$//;
		1632	push @paths, $_;
574	},	1633	}
575	;
576		1634
577	#############################################################################	1635	\@paths
578	# core extensions - in perl
579
580	=item cf::player::exists $login
581
582	Returns true when the given account exists.
583
584	=cut
585
586	sub cf::player::exists($) {
587	cf::player::find $_[0]
588	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
589	}	1636	}
590		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
591	=item $player->reply ($npc, $msg[, $flags])	1673	=item $player_object->reply ($npc, $msg[, $flags])
592		1674
593	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>
594	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
595	dialogue with the given NPC character.	1677	dialogue with the given NPC character.
596		1678
597	=cut	1679	=cut
598		1680
599	# rough implementation of a future "reply" method that works	1681	# rough implementation of a future "reply" method that works
600	# with dialog boxes.	1682	# with dialog boxes.
		1683	#TODO: the first argument must go, split into a $npc->reply_to ( method
601	sub cf::object::player::reply($$$;$) {	1684	sub cf::object::player::reply($$$;$) {
602	my ($self, $npc, $msg, $flags) = @_;	1685	my ($self, $npc, $msg, $flags) = @_;
603		1686
604	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1687	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
605		1688
…		…
609	$msg = $npc->name . " says: $msg" if $npc;	1692	$msg = $npc->name . " says: $msg" if $npc;
610	$self->message ($msg, $flags);	1693	$self->message ($msg, $flags);
611	}	1694	}
612	}	1695	}
613		1696
614	=item $player->ext_reply ($msgid, $msgtype, %msg)	1697	=item $player_object->may ("access")
615		1698
616	Sends an ext reply to the player.	1699	Returns wether the given player is authorized to access resource "access"
		1700	(e.g. "command_wizcast").
617		1701
618	=cut	1702	=cut
619		1703
620	sub cf::player::ext_reply($$$%) {	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, 10, 10);
		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	$exit->msg (undef);
		1896	}
		1897	}
		1898
		1899	sub cf::object::player::enter_exit {
621	my ($self, $id, %msg) = @_;	1900	my ($self, $exit) = @_;
622		1901
623	$msg{msgid} = $id;	1902	return unless $self->type == cf::PLAYER;
624		1903
625	$self->send ("ext " . to_json \%msg);	1904	$self->enter_link;
626	}
627		1905
628	#############################################################################	1906	(async {
629	# 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
630		2039
631	our $safe = new Safe "safe";	2040	our $safe = new Safe "safe";
632	our $safe_hole = new Safe::Hole;	2041	our $safe_hole = new Safe::Hole;
633		2042
634	$SIG{FPE} = 'IGNORE';	2043	$SIG{FPE} = 'IGNORE';
635		2044
636	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2045	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
637		2046
638	# here we export the classes and methods available to script code	2047	# here we export the classes and methods available to script code
639		2048
		2049	=pod
		2050
		2051	The following fucntions and emthods are available within a safe environment:
		2052
		2053	cf::object contr pay_amount pay_player map
		2054	cf::object::player player
		2055	cf::player peaceful
		2056	cf::map trigger
		2057
		2058	=cut
		2059
640	for (	2060	for (
641	["cf::object" => qw(contr pay_amount pay_player)],	2061	["cf::object" => qw(contr pay_amount pay_player map)],
642	["cf::object::player" => qw(player)],	2062	["cf::object::player" => qw(player)],
643	["cf::player" => qw(peaceful)],	2063	["cf::player" => qw(peaceful)],
		2064	["cf::map" => qw(trigger)],
644	) {	2065	) {
645	no strict 'refs';	2066	no strict 'refs';
646	my ($pkg, @funs) = @$_;	2067	my ($pkg, @funs) = @$_;
647	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2068	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
648	for @funs;	2069	for @funs;
649	}	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 + $second', first => 1, second => 4;
		2081
		2082	=cut
650		2083
651	sub safe_eval($;@) {	2084	sub safe_eval($;@) {
652	my ($code, %vars) = @_;	2085	my ($code, %vars) = @_;
653		2086
654	my $qcode = $code;	2087	my $qcode = $code;
…		…
677	}	2110	}
678		2111
679	wantarray ? @res : $res[0]	2112	wantarray ? @res : $res[0]
680	}	2113	}
681		2114
		2115	=item cf::register_script_function $function => $cb
		2116
		2117	Register a function that can be called from within map/npc scripts. The
		2118	function should be reasonably secure and should be put into a package name
		2119	like the extension.
		2120
		2121	Example: register a function that gets called whenever a map script calls
		2122	C<rent::overview>, as used by the C<rent> extension.
		2123
		2124	cf::register_script_function "rent::overview" => sub {
		2125	...
		2126	};
		2127
		2128	=cut
		2129
682	sub register_script_function {	2130	sub register_script_function {
683	my ($fun, $cb) = @_;	2131	my ($fun, $cb) = @_;
684		2132
685	no strict 'refs';	2133	no strict 'refs';
686	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2134	*{"safe::$fun"} = $safe_hole->wrap ($cb);
687	}	2135	}
688		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
689	#############################################################################	2249	#############################################################################
690	# the server's main()	2250	# the server's main()
691		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
692	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;
693	Event::loop;	2287	Event::loop;
694	}	2288	}
695		2289
696	#############################################################################	2290	#############################################################################
697	# initialisation	2291	# initialisation and cleanup
698		2292
699	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	};
700		2477
701	unshift @INC, $LIBDIR;	2478	unshift @INC, $LIBDIR;
702		2479
703	load_extensions;	2480	my $bug_warning = 0;
704		2481
705	$TICK_WATCHER = Event->timer (	2482	$TICK_WATCHER = Event->timer (
		2483	reentrant => 0,
		2484	parked => 1,
706	prio => 1,	2485	prio => 0,
707	at => $NEXT_TICK || 1,	2486	at => $NEXT_TICK || $TICK,
		2487	data => WF_AUTOCANCEL,
708	cb => sub {	2488	cb => sub {
		2489	if ($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
709	cf::server_tick; # one server iteration	2497	cf::server_tick; # one server iteration
710		2498	$RUNTIME += $TICK;
711	my $NOW = Event::time;
712	$NEXT_TICK += $TICK;	2499	$NEXT_TICK += $TICK;
713		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
714	# if we are delayed by four ticks, skip them all	2510	# if we are delayed by four ticks or more, skip them all
715	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2511	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
716		2512
717	$TICK_WATCHER->at ($NEXT_TICK);	2513	$TICK_WATCHER->at ($NEXT_TICK);
718	$TICK_WATCHER->start;	2514	$TICK_WATCHER->start;
719	},	2515	},
720	);	2516	);
721		2517
		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 }
		2543
722	1	2544	1
723		2545

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