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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.89 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.386 by root, Mon Oct 15 17:50:27 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 Socket;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
		13	use Storable ();
9		14
10	use IO::AIO ();	15	use Coro 4.1 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24	use Coro::Util ();
		25
		26	use JSON::XS ();
		27	use BDB ();
		28	use Data::Dumper;
		29	use Digest::MD5;
		30	use Fcntl;
11	use YAML::Syck ();	31	use YAML::Syck ();
		32	use IO::AIO 2.51 ();
12	use Time::HiRes;	33	use Time::HiRes;
13	use Event;	34	use Compress::LZF;
		35	use Digest::MD5 ();
		36
		37	# configure various modules to our taste
		38	#
		39	$Storable::canonical = 1; # reduce rsync transfers
		40	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		41	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		42
14	$Event::Eval = 1; # no idea why this is required, but it is	43	$Event::Eval = 1; # no idea why this is required, but it is
15		44
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	45	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	46	$YAML::Syck::ImplicitUnicode = 1;
18		47
19	use strict;	48	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		49
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	50	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		51
23	our %COMMAND = ();	52	our %COMMAND = ();
24	our %COMMAND_TIME = ();	53	our %COMMAND_TIME = ();
		54
		55	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	56	our %EXTCMD = ();
		57	our %EXTICMD = ();
		58	our %EXT_CORO = (); # coroutines bound to extensions
		59	our %EXT_MAP = (); # pluggable maps
26		60
27	_init_vars;	61	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	62	our @EVENT;
30	our $LIBDIR = datadir . "/ext";
31		63
32	our $TICK = MAX_TIME * 1e-6;	64	our $CONFDIR = confdir;
		65	our $DATADIR = datadir;
		66	our $LIBDIR = "$DATADIR/ext";
		67	our $PODDIR = "$DATADIR/pod";
		68	our $MAPDIR = "$DATADIR/" . mapdir;
		69	our $LOCALDIR = localdir;
		70	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		71	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		72	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		73	our $RANDOMDIR = "$LOCALDIR/random";
		74	our $BDBDIR = "$LOCALDIR/db";
		75
		76	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
33	our $TICK_WATCHER;	77	our $TICK_WATCHER;
		78	our $AIO_POLL_WATCHER;
		79	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	80	our $NEXT_TICK;
		81	our $NOW;
		82	our $USE_FSYNC = 1; # use fsync to write maps - default off
		83
		84	our $BDB_POLL_WATCHER;
		85	our $BDB_DEADLOCK_WATCHER;
		86	our $BDB_CHECKPOINT_WATCHER;
		87	our $BDB_TRICKLE_WATCHER;
		88	our $DB_ENV;
35		89
36	our %CFG;	90	our %CFG;
37		91
38	our $UPTIME; $UPTIME ||= time;	92	our $UPTIME; $UPTIME ||= time;
		93	our $RUNTIME;
		94
		95	our (%PLAYER, %PLAYER_LOADING); # all users
		96	our (%MAP, %MAP_LOADING ); # all maps
		97	our $LINK_MAP; # the special {link} map, which is always available
		98
		99	# used to convert map paths into valid unix filenames by replacing / by ∕
		100	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		101
		102	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		103	our $LOADAVG; # same thing, but with alpha-smoothing
		104	our $tick_start; # for load detecting purposes
		105
		106	binmode STDOUT;
		107	binmode STDERR;
		108
		109	# read virtual server time, if available
		110	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		111	open my $fh, "<", "$LOCALDIR/runtime"
		112	or die "unable to read runtime file: $!";
		113	$RUNTIME = <$fh> + 0.;
		114	}
		115
		116	mkdir $_
		117	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		118
		119	our $EMERGENCY_POSITION;
		120
		121	sub cf::map::normalise;
39		122
40	#############################################################################	123	#############################################################################
41		124
42	=head2 GLOBAL VARIABLES	125	=head2 GLOBAL VARIABLES
43		126
…		…
45		128
46	=item $cf::UPTIME	129	=item $cf::UPTIME
47		130
48	The timestamp of the server start (so not actually an uptime).	131	The timestamp of the server start (so not actually an uptime).
49		132
50	=item $cf::LIBDIR	133	=item $cf::RUNTIME
51		134
52	The perl library directory, where extensions and cf-specific modules can	135	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	136	every server tick.
		137
		138	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		139	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		140	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		141
		142	Various directories - "/etc", read-only install directory, perl-library
		143	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		144	unique-items directory, player file directory, random maps directory and
		145	database environment.
		146
		147	=item $cf::NOW
		148
		149	The time of the last (current) server tick.
54		150
55	=item $cf::TICK	151	=item $cf::TICK
56		152
57	The interval between server ticks, in seconds.	153	The interval between server ticks, in seconds.
		154
		155	=item $cf::LOADAVG
		156
		157	The current CPU load on the server (alpha-smoothed), as a value between 0
		158	(none) and 1 (overloaded), indicating how much time is spent on processing
		159	objects per tick. Healthy values are < 0.5.
		160
		161	=item $cf::LOAD
		162
		163	The raw value load value from the last tick.
58		164
59	=item %cf::CFG	165	=item %cf::CFG
60		166
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	167	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	168	from wherever your confdir points to.
		169
		170	=item cf::wait_for_tick, cf::wait_for_tick_begin
		171
		172	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		173	returns directly I<after> the tick processing (and consequently, can only wake one process
		174	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		175
		176	=item @cf::INVOKE_RESULTS
		177
		178	This array contains the results of the last C<invoke ()> call. When
		179	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		180	that call.
63		181
64	=back	182	=back
65		183
66	=cut	184	=cut
67		185
68	BEGIN {	186	BEGIN {
69	*CORE::GLOBAL::warn = sub {	187	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	188	my $msg = join "", @_;
		189
71	$msg .= "\n"	190	$msg .= "\n"
72	unless $msg =~ /\n$/;	191	unless $msg =~ /\n$/;
73		192
74	print STDERR "cfperl: $msg";	193	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		194
75	LOG llevError, "cfperl: $msg";	195	LOG llevError, $msg;
76	};	196	};
77	}	197	}
78		198
		199	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		200	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		201	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		202	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		203	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		204	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	205	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
80		206
81	# we bless all objects into (empty) derived classes to force a method lookup	207	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	208	# within the Safe compartment.
83	for my $pkg (qw(	209	for my $pkg (qw(
		210	cf::global cf::attachable
84	cf::object cf::object::player	211	cf::object cf::object::player
85	cf::client cf::player	212	cf::client cf::player
86	cf::arch cf::living	213	cf::arch cf::living
87	cf::map cf::party cf::region	214	cf::map cf::party cf::region
88	)) {	215	)) {
…		…
92		219
93	$Event::DIED = sub {	220	$Event::DIED = sub {
94	warn "error in event callback: @_";	221	warn "error in event callback: @_";
95	};	222	};
96		223
97	my %ext_pkg;	224	#############################################################################
98	my @exts;
99	my @hook;
100		225
101	=head2 UTILITY FUNCTIONS	226	=head2 UTILITY FUNCTIONS
102		227
103	=over 4	228	=over 4
104		229
105	=cut	230	=item dumpval $ref
106		231
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	232	=cut
		233
		234	sub dumpval {
		235	eval {
		236	local $SIG{__DIE__};
		237	my $d;
		238	if (1) {
		239	$d = new Data::Dumper([$_[0]], ["*var"]);
		240	$d->Terse(1);
		241	$d->Indent(2);
		242	$d->Quotekeys(0);
		243	$d->Useqq(1);
		244	#$d->Bless(...);
		245	$d->Seen($_[1]) if @_ > 1;
		246	$d = $d->Dump();
		247	}
		248	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		249	$d
		250	} || "[unable to dump $_[0]: '$@']";
		251	}
108		252
109	=item $ref = cf::from_json $json	253	=item $ref = cf::from_json $json
110		254
111	Converts a JSON string into the corresponding perl data structure.	255	Converts a JSON string into the corresponding perl data structure.
112		256
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	257	=item $json = cf::to_json $ref
121		258
122	Converts a perl data structure into its JSON representation.	259	Converts a perl data structure into its JSON representation.
123		260
124	=cut	261	=cut
125		262
126	sub to_json($) {	263	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	264
128	JSON::Syck::Dump $_[0]	265	sub to_json ($) { $json_coder->encode ($_[0]) }
		266	sub from_json ($) { $json_coder->decode ($_[0]) }
		267
		268	=item cf::lock_wait $string
		269
		270	Wait until the given lock is available. See cf::lock_acquire.
		271
		272	=item my $lock = cf::lock_acquire $string
		273
		274	Wait until the given lock is available and then acquires it and returns
		275	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		276	for example when the coroutine gets canceled), the lock is automatically
		277	returned.
		278
		279	Locks are *not* recursive, locking from the same coro twice results in a
		280	deadlocked coro.
		281
		282	Lock names should begin with a unique identifier (for example, cf::map::find
		283	uses map_find and cf::map::load uses map_load).
		284
		285	=item $locked = cf::lock_active $string
		286
		287	Return true if the lock is currently active, i.e. somebody has locked it.
		288
		289	=cut
		290
		291	our %LOCK;
		292	our %LOCKER;#d#
		293
		294	sub lock_wait($) {
		295	my ($key) = @_;
		296
		297	if ($LOCKER{$key} == $Coro::current) {#d#
		298	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		299	return;#d#
		300	}#d#
		301
		302	# wait for lock, if any
		303	while ($LOCK{$key}) {
		304	push @{ $LOCK{$key} }, $Coro::current;
		305	Coro::schedule;
		306	}
		307	}
		308
		309	sub lock_acquire($) {
		310	my ($key) = @_;
		311
		312	# wait, to be sure we are not locked
		313	lock_wait $key;
		314
		315	$LOCK{$key} = [];
		316	$LOCKER{$key} = $Coro::current;#d#
		317
		318	Coro::guard {
		319	delete $LOCKER{$key};#d#
		320	# wake up all waiters, to be on the safe side
		321	$_->ready for @{ delete $LOCK{$key} };
		322	}
		323	}
		324
		325	sub lock_active($) {
		326	my ($key) = @_;
		327
		328	! ! $LOCK{$key}
		329	}
		330
		331	sub freeze_mainloop {
		332	return unless $TICK_WATCHER->is_active;
		333
		334	my $guard = Coro::guard {
		335	$TICK_WATCHER->start;
		336	};
		337	$TICK_WATCHER->stop;
		338	$guard
		339	}
		340
		341	=item cf::get_slot $time[, $priority[, $name]]
		342
		343	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		344	This call blocks and returns only when you have at least C<$time> seconds
		345	of cpu time till the next tick. The slot is only valid till the next cede.
		346
		347	The optional C<$name> can be used to identify the job to run. It might be
		348	used for statistical purposes and should identify the same time-class.
		349
		350	Useful for short background jobs.
		351
		352	=cut
		353
		354	our @SLOT_QUEUE;
		355	our $SLOT_QUEUE;
		356
		357	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		358	$SLOT_QUEUE = Coro::async {
		359	$Coro::current->desc ("timeslot manager");
		360
		361	my $signal = new Coro::Signal;
		362
		363	while () {
		364	next_job:
		365	my $avail = cf::till_tick;
		366	if ($avail > 0.01) {
		367	for (0 .. $#SLOT_QUEUE) {
		368	if ($SLOT_QUEUE[$_][0] < $avail) {
		369	my $job = splice @SLOT_QUEUE, $_, 1, ();
		370	$job->[2]->send;
		371	Coro::cede;
		372	goto next_job;
		373	}
		374	}
		375	}
		376
		377	if (@SLOT_QUEUE) {
		378	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		379	push @cf::WAIT_FOR_TICK, $signal;
		380	$signal->wait;
		381	} else {
		382	Coro::schedule;
		383	}
		384	}
		385	};
		386
		387	sub get_slot($;$$) {
		388	my ($time, $pri, $name) = @_;
		389
		390	$time = $TICK * .6 if $time > $TICK * .6;
		391	my $sig = new Coro::Signal;
		392
		393	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		394	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		395	$SLOT_QUEUE->ready;
		396	$sig->wait;
		397	}
		398
		399	=item cf::async { BLOCK }
		400
		401	Currently the same as Coro::async_pool, meaning you cannot use
		402	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		403	thing you are allowed to do is call C<prio> on it.
		404
		405	=cut
		406
		407	BEGIN { *async = \&Coro::async_pool }
		408
		409	=item cf::sync_job { BLOCK }
		410
		411	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		412	is always able to handle events or runnable, as Crossfire TRT is only
		413	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		414	acceptable.
		415
		416	If it must be done, put the blocking parts into C<sync_job>. This will run
		417	the given BLOCK in another coroutine while waiting for the result. The
		418	server will be frozen during this time, so the block should either finish
		419	fast or be very important.
		420
		421	=cut
		422
		423	sub sync_job(&) {
		424	my ($job) = @_;
		425
		426	if ($Coro::current == $Coro::main) {
		427	my $time = Event::time;
		428
		429	# this is the main coro, too bad, we have to block
		430	# till the operation succeeds, freezing the server :/
		431
		432	LOG llevError, Carp::longmess "sync job";#d#
		433
		434	# TODO: use suspend/resume instead
		435	# (but this is cancel-safe)
		436	my $freeze_guard = freeze_mainloop;
		437
		438	my $busy = 1;
		439	my @res;
		440
		441	(async {
		442	$Coro::current->desc ("sync job coro");
		443	@res = eval { $job->() };
		444	warn $@ if $@;
		445	undef $busy;
		446	})->prio (Coro::PRIO_MAX);
		447
		448	while ($busy) {
		449	Coro::cede or Event::one_event;
		450	}
		451
		452	$time = Event::time - $time;
		453
		454	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		455	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		456
		457	$tick_start += $time; # do not account sync jobs to server load
		458
		459	wantarray ? @res : $res[0]
		460	} else {
		461	# we are in another coroutine, how wonderful, everything just works
		462
		463	$job->()
		464	}
		465	}
		466
		467	=item $coro = cf::async_ext { BLOCK }
		468
		469	Like async, but this coro is automatically being canceled when the
		470	extension calling this is being unloaded.
		471
		472	=cut
		473
		474	sub async_ext(&) {
		475	my $cb = shift;
		476
		477	my $coro = &Coro::async ($cb);
		478
		479	$coro->on_destroy (sub {
		480	delete $EXT_CORO{$coro+0};
		481	});
		482	$EXT_CORO{$coro+0} = $coro;
		483
		484	$coro
		485	}
		486
		487	=item fork_call { }, $args
		488
		489	Executes the given code block with the given arguments in a seperate
		490	process, returning the results. Everything must be serialisable with
		491	Coro::Storable. May, of course, block. Note that the executed sub may
		492	never block itself or use any form of Event handling.
		493
		494	=cut
		495
		496	sub fork_call(&@) {
		497	my ($cb, @args) = @_;
		498
		499	# we seemingly have to make a local copy of the whole thing,
		500	# otherwise perl prematurely frees the stuff :/
		501	# TODO: investigate and fix (likely this will be rather laborious)
		502
		503	my @res = Coro::Util::fork_eval {
		504	reset_signals;
		505	&$cb
		506	}, @args;
		507
		508	wantarray ? @res : $res[-1]
		509	}
		510
		511	=item $value = cf::db_get $family => $key
		512
		513	Returns a single value from the environment database.
		514
		515	=item cf::db_put $family => $key => $value
		516
		517	Stores the given C<$value> in the family. It can currently store binary
		518	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		519
		520	=item $db = cf::db_table "name"
		521
		522	Create and/or open a new database table. The string must not be "db" and must be unique
		523	within each server.
		524
		525	=cut
		526
		527	sub db_table($) {
		528	my ($name) = @_;
		529	my $db = BDB::db_create $DB_ENV;
		530
		531	eval {
		532	$db->set_flags (BDB::CHKSUM);
		533
		534	utf8::encode $name;
		535	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		536	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		537	cf::cleanup "db_open(db): $!" if $!;
		538	};
		539	cf::cleanup "db_open(db): $@" if $@;
		540
		541	$db
		542	}
		543
		544	our $DB;
		545
		546	sub db_init {
		547	cf::sync_job {
		548	$DB ||= db_table "db";
		549	};
		550	}
		551
		552	sub db_get($$) {
		553	my $key = "$_[0]/$_[1]";
		554
		555	cf::sync_job {
		556	BDB::db_get $DB, undef, $key, my $data;
		557
		558	$! ? ()
		559	: $data
		560	}
		561	}
		562
		563	sub db_put($$$) {
		564	BDB::dbreq_pri 4;
		565	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		566	}
		567
		568	=item cf::cache $id => [$paths...], $processversion => $process
		569
		570	Generic caching function that returns the value of the resource $id,
		571	caching and regenerating as required.
		572
		573	This function can block.
		574
		575	=cut
		576
		577	sub cache {
		578	my ($id, $src, $processversion, $process) = @_;
		579
		580	my $meta =
		581	join "\x00",
		582	$processversion,
		583	map {
		584	aio_stat $_
		585	and Carp::croak "$_: $!";
		586
		587	($_, (stat _)[7,9])
		588	} @$src;
		589
		590	my $dbmeta = db_get cache => "$id/meta";
		591	if ($dbmeta ne $meta) {
		592	# changed, we may need to process
		593
		594	my @data;
		595	my $md5;
		596
		597	for (0 .. $#$src) {
		598	0 <= aio_load $src->[$_], $data[$_]
		599	or Carp::croak "$src->[$_]: $!";
		600	}
		601
		602	# if processing is expensive, check
		603	# checksum first
		604	if (1) {
		605	$md5 =
		606	join "\x00",
		607	$processversion,
		608	map {
		609	cf::cede_to_tick;
		610	($src->[$_], Digest::MD5::md5_hex $data[$_])
		611	} 0.. $#$src;
		612
		613
		614	my $dbmd5 = db_get cache => "$id/md5";
		615	if ($dbmd5 eq $md5) {
		616	db_put cache => "$id/meta", $meta;
		617
		618	return db_get cache => "$id/data";
		619	}
		620	}
		621
		622	my $t1 = Time::HiRes::time;
		623	my $data = $process->(\@data);
		624	my $t2 = Time::HiRes::time;
		625
		626	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		627
		628	db_put cache => "$id/data", $data;
		629	db_put cache => "$id/md5" , $md5;
		630	db_put cache => "$id/meta", $meta;
		631
		632	return $data;
		633	}
		634
		635	db_get cache => "$id/data"
		636	}
		637
		638	=item cf::datalog type => key => value, ...
		639
		640	Log a datalog packet of the given type with the given key-value pairs.
		641
		642	=cut
		643
		644	sub datalog($@) {
		645	my ($type, %kv) = @_;
		646	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	647	}
130		648
131	=back	649	=back
132		650
133	=cut	651	=cut
134		652
135	#############################################################################	653	#############################################################################
136		654
137	=head2 EVENTS AND OBJECT ATTACHMENTS	655	=head2 ATTACHABLE OBJECTS
		656
		657	Many objects in crossfire are so-called attachable objects. That means you can
		658	attach callbacks/event handlers (a collection of which is called an "attachment")
		659	to it. All such attachable objects support the following methods.
		660
		661	In the following description, CLASS can be any of C<global>, C<object>
		662	C<player>, C<client> or C<map> (i.e. the attachable objects in
		663	Crossfire TRT).
138		664
139	=over 4	665	=over 4
140		666
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)	667	=item $attachable->attach ($attachment, key => $value...)
154		668
155	=item $map->detach ($attachment)	669	=item $attachable->detach ($attachment)
156		670
157	Attach/detach a pre-registered attachment to a map.	671	Attach/detach a pre-registered attachment to a specific object and give it
		672	the specified key/value pairs as arguments.
158		673
159	=item $bool = $object->attached ($name)	674	Example, attach a minesweeper attachment to the given object, making it a
		675	10x10 minesweeper game:
160		676
161	=item $bool = $player->attached ($name)	677	$obj->attach (minesweeper => width => 10, height => 10);
162		678
163	=item $bool = $map->attached ($name)	679	=item $bool = $attachable->attached ($name)
164		680
165	Checks wether the named attachment is currently attached to the object.	681	Checks wether the named attachment is currently attached to the object.
166		682
167	=item cf::attach_global ...	683	=item cf::CLASS->attach ...
168		684
169	Attach handlers for global events.	685	=item cf::CLASS->detach ...
170		686
171	This and all following C<attach_*>-functions expect any number of the	687	Define an anonymous attachment and attach it to all objects of the given
172	following handler/hook descriptions:	688	CLASS. See the next function for an explanation of its arguments.
		689
		690	You can attach to global events by using the C<cf::global> class.
		691
		692	Example, log all player logins:
		693
		694	cf::player->attach (
		695	on_login => sub {
		696	my ($pl) = @_;
		697	...
		698	},
		699	);
		700
		701	Example, attach to the jeweler skill:
		702
		703	cf::object->attach (
		704	type => cf::SKILL,
		705	subtype => cf::SK_JEWELER,
		706	on_use_skill => sub {
		707	my ($sk, $ob, $part, $dir, $msg) = @_;
		708	...
		709	},
		710	);
		711
		712	=item cf::CLASS::attachment $name, ...
		713
		714	Register an attachment by C<$name> through which attachable objects of the
		715	given CLASS can refer to this attachment.
		716
		717	Some classes such as crossfire maps and objects can specify attachments
		718	that are attached at load/instantiate time, thus the need for a name.
		719
		720	These calls expect any number of the following handler/hook descriptions:
173		721
174	=over 4	722	=over 4
175		723
176	=item prio => $number	724	=item prio => $number
177		725
…		…
179	by another C<prio> setting). Lower priority handlers get executed	727	by another C<prio> setting). Lower priority handlers get executed
180	earlier. The default priority is C<0>, and many built-in handlers are	728	earlier. The default priority is C<0>, and many built-in handlers are
181	registered at priority C<-1000>, so lower priorities should not be used	729	registered at priority C<-1000>, so lower priorities should not be used
182	unless you know what you are doing.	730	unless you know what you are doing.
183		731
		732	=item type => $type
		733
		734	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		735	given type of objects only (the additional parameter C<subtype> can be
		736	used to further limit to the given subtype).
		737
184	=item on_I<event> => \&cb	738	=item on_I<event> => \&cb
185		739
186	Call the given code reference whenever the named event happens (event is	740	Call the given code reference whenever the named event happens (event is
187	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	741	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
188	handlers are recognised generally depends on the type of object these	742	handlers are recognised generally depends on the type of object these
…		…
197	package and register them. Only handlers for eevents supported by the	751	package and register them. Only handlers for eevents supported by the
198	object/class are recognised.	752	object/class are recognised.
199		753
200	=back	754	=back
201		755
202	=item cf::attach_to_type $object_type, $subtype, ...	756	Example, define an attachment called "sockpuppet" that calls the given
		757	event handler when a monster attacks:
203		758
204	Attach handlers for a specific object type (e.g. TRANSPORT) and	759	cf::object::attachment sockpuppet =>
205	subtype. If C<$subtype> is zero or undef, matches all objects of the given	760	on_skill_attack => sub {
206	type.	761	my ($self, $victim) = @_;
207		762	...
208	=item cf::attach_to_objects ...
209
210	Attach handlers to all objects. Do not use this except for debugging or
211	very rare events, as handlers are (obviously) called for I<all> objects in
212	the game.
213
214	=item cf::attach_to_players ...
215
216	Attach handlers to all players.
217
218	=item cf::attach_to_maps ...
219
220	Attach handlers to all maps.
221
222	=item cf:register_attachment $name, ...
223
224	Register an attachment by name through which objects can refer to this
225	attachment.
226
227	=item cf:register_player_attachment $name, ...
228
229	Register an attachment by name through which players can refer to this
230	attachment.
231
232	=item cf:register_map_attachment $name, ...
233
234	Register an attachment by name through which maps can refer to this
235	attachment.
236
237	=cut
238
239	# the following variables are defined in .xs and must not be re-created
240	our @CB_GLOBAL = (); # registry for all global events
241	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
242	our @CB_PLAYER = ();
243	our @CB_TYPE = (); # registry for type (cf-object class) based events
244	our @CB_MAP = ();
245
246	my %attachment;
247
248	sub _attach_cb($\%$$$) {
249	my ($registry, $undo, $event, $prio, $cb) = @_;
250
251	use sort 'stable';
252
253	$cb = [$prio, $cb];
254
255	@{$registry->[$event]} = sort
256	{ $a->[0] cmp $b->[0] }
257	@{$registry->[$event] || []}, $cb;
258
259	push @{$undo->{cb}}, [$event, $cb];
260	}
261
262	# attach handles attaching event callbacks
263	# the only thing the caller has to do is pass the correct
264	# registry (== where the callback attaches to).
265	sub _attach(\@$@) {
266	my ($registry, $klass, @arg) = @_;
267
268	my $prio = 0;
269
270	my %undo = (
271	registry => $registry,
272	cb => [],
273	);
274
275	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
276
277	while (@arg) {
278	my $type = shift @arg;
279
280	if ($type eq "prio") {
281	$prio = shift @arg;
282
283	} elsif ($type eq "package") {
284	my $pkg = shift @arg;
285
286	while (my ($name, $id) = each %cb_id) {
287	if (my $cb = $pkg->can ($name)) {
288	_attach_cb $registry, %undo, $id, $prio, $cb;
289	}
290	}	763	}
291
292	} elsif (exists $cb_id{$type}) {
293	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
294
295	} elsif (ref $type) {
296	warn "attaching objects not supported, ignoring.\n";
297
298	} else {
299	shift @arg;
300	warn "attach argument '$type' not supported, ignoring.\n";
301	}
302	}
303
304	\%undo
305	}
306
307	sub _attach_attachment {
308	my ($obj, $name, %arg) = @_;
309
310	return if exists $obj->{_attachment}{$name};
311
312	my $res;
313
314	if (my $attach = $attachment{$name}) {
315	my $registry = $obj->registry;
316
317	for (@$attach) {
318	my ($klass, @attach) = @$_;
319	$res = _attach @$registry, $klass, @attach;
320	}
321
322	$obj->{$name} = \%arg;
323	} else {
324	warn "object uses attachment '$name' that is not available, postponing.\n";
325	}
326
327	$obj->{_attachment}{$name} = undef;
328
329	$res->{attachment} = $name;
330	$res
331	}
332
333	*cf::object::attach =
334	*cf::player::attach =
335	*cf::map::attach = sub {
336	my ($obj, $name, %arg) = @_;
337
338	_attach_attachment $obj, $name, %arg;
339	};
340
341	# all those should be optimised
342	*cf::object::detach =
343	*cf::player::detach =
344	*cf::map::detach = sub {
345	my ($obj, $name) = @_;
346
347	delete $obj->{_attachment}{$name};
348	reattach ($obj);
349	};
350
351	*cf::object::attached =
352	*cf::player::attached =
353	*cf::map::attached = sub {
354	my ($obj, $name) = @_;
355
356	exists $obj->{_attachment}{$name}
357	};
358
359	sub attach_global {
360	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
361	}
362
363	sub attach_to_type {
364	my $type = shift;
365	my $subtype = shift;
366
367	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
368	}
369
370	sub attach_to_objects {
371	_attach @CB_OBJECT, KLASS_OBJECT, @_
372	}
373
374	sub attach_to_players {
375	_attach @CB_PLAYER, KLASS_PLAYER, @_
376	}
377
378	sub attach_to_maps {
379	_attach @CB_MAP, KLASS_MAP, @_
380	}
381
382	sub register_attachment {
383	my $name = shift;
384
385	$attachment{$name} = [[KLASS_OBJECT, @_]];
386	}
387
388	sub register_player_attachment {
389	my $name = shift;
390
391	$attachment{$name} = [[KLASS_PLAYER, @_]];
392	}
393
394	sub register_map_attachment {
395	my $name = shift;
396
397	$attachment{$name} = [[KLASS_MAP, @_]];
398	}
399
400	our $override;
401	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
402
403	sub override {
404	$override = 1;
405	@invoke_results = ();
406	}
407
408	sub do_invoke {
409	my $event = shift;
410	my $callbacks = shift;
411
412	@invoke_results = ();
413
414	local $override;
415
416	for (@$callbacks) {
417	eval { &{$_->[1]} };
418
419	if ($@) {
420	warn "$@";
421	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
422	override;
423	}
424
425	return 1 if $override;
426	}
427
428	0	764	}
429	}
430		765
431	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	766	=item $attachable->valid
432
433	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
434
435	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
436
437	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
438
439	Generate a global/object/player/map-specific event with the given arguments.
440
441	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
442	removed in future versions), and there is no public API to access override
443	results (if you must, access C<@cf::invoke_results> directly).
444
445	=back
446
447	=cut
448
449	#############################################################################
450
451	=head2 METHODS VALID FOR ALL CORE OBJECTS
452
453	=over 4
454
455	=item $object->valid, $player->valid, $map->valid
456		767
457	Just because you have a perl object does not mean that the corresponding	768	Just because you have a perl object does not mean that the corresponding
458	C-level object still exists. If you try to access an object that has no	769	C-level object still exists. If you try to access an object that has no
459	valid C counterpart anymore you get an exception at runtime. This method	770	valid C counterpart anymore you get an exception at runtime. This method
460	can be used to test for existence of the C object part without causing an	771	can be used to test for existence of the C object part without causing an
461	exception.	772	exception.
462		773
		774	=cut
		775
		776	# the following variables are defined in .xs and must not be re-created
		777	our @CB_GLOBAL = (); # registry for all global events
		778	our @CB_ATTACHABLE = (); # registry for all attachables
		779	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		780	our @CB_PLAYER = ();
		781	our @CB_CLIENT = ();
		782	our @CB_TYPE = (); # registry for type (cf-object class) based events
		783	our @CB_MAP = ();
		784
		785	my %attachment;
		786
		787	sub cf::attachable::thawer_merge {
		788	# simply override everything except _meta
		789	local $_[0]{_meta};
		790	%{$_[0]} = %{$_[1]};
		791	}
		792
		793	sub _attach_cb($$$$) {
		794	my ($registry, $event, $prio, $cb) = @_;
		795
		796	use sort 'stable';
		797
		798	$cb = [$prio, $cb];
		799
		800	@{$registry->[$event]} = sort
		801	{ $a->[0] cmp $b->[0] }
		802	@{$registry->[$event] || []}, $cb;
		803	}
		804
		805	# hack
		806	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		807
		808	# attach handles attaching event callbacks
		809	# the only thing the caller has to do is pass the correct
		810	# registry (== where the callback attaches to).
		811	sub _attach {
		812	my ($registry, $klass, @arg) = @_;
		813
		814	my $object_type;
		815	my $prio = 0;
		816	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		817
		818	#TODO: get rid of this hack
		819	if ($attachable_klass{$klass}) {
		820	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		821	}
		822
		823	while (@arg) {
		824	my $type = shift @arg;
		825
		826	if ($type eq "prio") {
		827	$prio = shift @arg;
		828
		829	} elsif ($type eq "type") {
		830	$object_type = shift @arg;
		831	$registry = $CB_TYPE[$object_type] ||= [];
		832
		833	} elsif ($type eq "subtype") {
		834	defined $object_type or Carp::croak "subtype specified without type";
		835	my $object_subtype = shift @arg;
		836	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		837
		838	} elsif ($type eq "package") {
		839	my $pkg = shift @arg;
		840
		841	while (my ($name, $id) = each %cb_id) {
		842	if (my $cb = $pkg->can ($name)) {
		843	_attach_cb $registry, $id, $prio, $cb;
		844	}
		845	}
		846
		847	} elsif (exists $cb_id{$type}) {
		848	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		849
		850	} elsif (ref $type) {
		851	warn "attaching objects not supported, ignoring.\n";
		852
		853	} else {
		854	shift @arg;
		855	warn "attach argument '$type' not supported, ignoring.\n";
		856	}
		857	}
		858	}
		859
		860	sub _object_attach {
		861	my ($obj, $name, %arg) = @_;
		862
		863	return if exists $obj->{_attachment}{$name};
		864
		865	if (my $attach = $attachment{$name}) {
		866	my $registry = $obj->registry;
		867
		868	for (@$attach) {
		869	my ($klass, @attach) = @$_;
		870	_attach $registry, $klass, @attach;
		871	}
		872
		873	$obj->{$name} = \%arg;
		874	} else {
		875	warn "object uses attachment '$name' which is not available, postponing.\n";
		876	}
		877
		878	$obj->{_attachment}{$name} = undef;
		879	}
		880
		881	sub cf::attachable::attach {
		882	if (ref $_[0]) {
		883	_object_attach @_;
		884	} else {
		885	_attach shift->_attach_registry, @_;
		886	}
		887	_recalc_want;
		888	};
		889
		890	# all those should be optimised
		891	sub cf::attachable::detach {
		892	my ($obj, $name) = @_;
		893
		894	if (ref $obj) {
		895	delete $obj->{_attachment}{$name};
		896	reattach ($obj);
		897	} else {
		898	Carp::croak "cannot, currently, detach class attachments";
		899	}
		900	_recalc_want;
		901	};
		902
		903	sub cf::attachable::attached {
		904	my ($obj, $name) = @_;
		905
		906	exists $obj->{_attachment}{$name}
		907	}
		908
		909	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		910	eval "#line " . __LINE__ . " 'cf.pm'
		911	sub cf::\L$klass\E::_attach_registry {
		912	(\\\@CB_$klass, KLASS_$klass)
		913	}
		914
		915	sub cf::\L$klass\E::attachment {
		916	my \$name = shift;
		917
		918	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		919	}
		920	";
		921	die if $@;
		922	}
		923
		924	our $override;
		925	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		926
		927	sub override {
		928	$override = 1;
		929	@INVOKE_RESULTS = (@_);
		930	}
		931
		932	sub do_invoke {
		933	my $event = shift;
		934	my $callbacks = shift;
		935
		936	@INVOKE_RESULTS = ();
		937
		938	local $override;
		939
		940	for (@$callbacks) {
		941	eval { &{$_->[1]} };
		942
		943	if ($@) {
		944	warn "$@";
		945	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		946	override;
		947	}
		948
		949	return 1 if $override;
		950	}
		951
		952	0
		953	}
		954
		955	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		956
		957	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		958
		959	Generate an object-specific event with the given arguments.
		960
		961	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		962	removed in future versions), and there is no public API to access override
		963	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		964
463	=back	965	=back
464		966
465	=cut	967	=cut
466
467	*cf::object::valid =
468	*cf::player::valid =
469	*cf::map::valid = \&cf::_valid;
470		968
471	#############################################################################	969	#############################################################################
472	# object support	970	# object support
473		971
474	sub instantiate {	972	sub _object_equal($$);
		973	sub _object_equal($$) {
		974	my ($a, $b) = @_;
		975
		976	return 0 unless (ref $a) eq (ref $b);
		977
		978	if ("HASH" eq ref $a) {
		979	my @ka = keys %$a;
		980	my @kb = keys %$b;
		981
		982	return 0 if @ka != @kb;
		983
		984	for (0 .. $#ka) {
		985	return 0 unless $ka[$_] eq $kb[$_];
		986	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		987	}
		988
		989	} elsif ("ARRAY" eq ref $a) {
		990
		991	return 0 if @$a != @$b;
		992
		993	for (0 .. $#$a) {
		994	return 0 unless _object_equal $a->[$_], $b->[$_];
		995	}
		996
		997	} elsif ($a ne $b) {
		998	return 0;
		999	}
		1000
		1001	1
		1002	}
		1003
		1004	our $SLOW_MERGES;#d#
		1005	sub _can_merge {
475	my ($obj, $data) = @_;	1006	my ($ob1, $ob2) = @_;
476		1007
477	$data = from_json $data;	1008	++$SLOW_MERGES;#d#
478		1009
479	for (@$data) {	1010	# we do the slow way here
480	my ($name, $args) = @$_;	1011	return _object_equal $ob1, $ob2
481
482	$obj->attach ($name, %{$args || {} });
483	}
484	}	1012	}
485		1013
486	# basically do the same as instantiate, without calling instantiate
487	sub reattach {	1014	sub reattach {
		1015	# basically do the same as instantiate, without calling instantiate
488	my ($obj) = @_;	1016	my ($obj) = @_;
		1017
		1018	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1019
489	my $registry = $obj->registry;	1020	my $registry = $obj->registry;
490		1021
491	@$registry = ();	1022	@$registry = ();
492		1023
493	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1024	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
494		1025
495	for my $name (keys %{ $obj->{_attachment} || {} }) {	1026	for my $name (keys %{ $obj->{_attachment} || {} }) {
496	if (my $attach = $attachment{$name}) {	1027	if (my $attach = $attachment{$name}) {
497	for (@$attach) {	1028	for (@$attach) {
498	my ($klass, @attach) = @$_;	1029	my ($klass, @attach) = @$_;
499	_attach @$registry, $klass, @attach;	1030	_attach $registry, $klass, @attach;
500	}	1031	}
501	} else {	1032	} else {
502	warn "object uses attachment '$name' that is not available, postponing.\n";	1033	warn "object uses attachment '$name' that is not available, postponing.\n";
503	}	1034	}
504	}	1035	}
505	}	1036	}
506		1037
507	sub object_freezer_save {	1038	cf::attachable->attach (
508	my ($filename, $rdata, $objs) = @_;
509
510	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;
513
514	if (open my $fh, ">:raw", "$filename~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
522	close $fh;
523	rename "$filename.pst~", "$filename.pst";
524	} else {
525	unlink "$filename.pst";
526	}
527
528	rename "$filename~", $filename;
529	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;
534	unlink "$filename.pst";
535	}
536	}
537
538	sub object_freezer_as_string {
539	my ($rdata, $objs) = @_;
540
541	use Data::Dumper;
542
543	$$rdata . Dumper $objs
544	}
545
546	sub object_thawer_load {
547	my ($filename) = @_;
548
549	local $/;
550
551	my $av;
552
553	#TODO: use sysread etc.
554	if (open my $data, "<:raw:perlio", $filename) {
555	$data = <$data>;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };
558	}
559	return ($data, $av);
560	}
561
562	()
563	}
564
565	attach_to_objects
566	prio => -1000000,	1039	prio => -1000000,
		1040	on_instantiate => sub {
		1041	my ($obj, $data) = @_;
		1042
		1043	$data = from_json $data;
		1044
		1045	for (@$data) {
		1046	my ($name, $args) = @$_;
		1047
		1048	$obj->attach ($name, %{$args || {} });
		1049	}
		1050	},
		1051	on_reattach => \&reattach,
567	on_clone => sub {	1052	on_clone => sub {
568	my ($src, $dst) = @_;	1053	my ($src, $dst) = @_;
569		1054
570	@{$dst->registry} = @{$src->registry};	1055	@{$dst->registry} = @{$src->registry};
571		1056
572	%$dst = %$src;	1057	%$dst = %$src;
573		1058
574	%{$dst->{_attachment}} = %{$src->{_attachment}}	1059	%{$dst->{_attachment}} = %{$src->{_attachment}}
575	if exists $src->{_attachment};	1060	if exists $src->{_attachment};
576	},	1061	},
577	;	1062	);
		1063
		1064	sub object_freezer_save {
		1065	my ($filename, $rdata, $objs) = @_;
		1066
		1067	sync_job {
		1068	if (length $$rdata) {
		1069	utf8::decode (my $decname = $filename);
		1070	warn sprintf "saving %s (%d,%d)\n",
		1071	$decname, length $$rdata, scalar @$objs;
		1072
		1073	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1074	chmod SAVE_MODE, $fh;
		1075	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1076	aio_fsync $fh if $cf::USE_FSYNC;
		1077	close $fh;
		1078
		1079	if (@$objs) {
		1080	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1081	chmod SAVE_MODE, $fh;
		1082	my $data = Coro::Storable::blocking_nfreeze { version => 1, objs => $objs };
		1083	aio_write $fh, 0, (length $data), $data, 0;
		1084	aio_fsync $fh if $cf::USE_FSYNC;
		1085	close $fh;
		1086	aio_rename "$filename.pst~", "$filename.pst";
		1087	}
		1088	} else {
		1089	aio_unlink "$filename.pst";
		1090	}
		1091
		1092	aio_rename "$filename~", $filename;
		1093	} else {
		1094	warn "FATAL: $filename~: $!\n";
		1095	}
		1096	} else {
		1097	aio_unlink $filename;
		1098	aio_unlink "$filename.pst";
		1099	}
		1100	};
		1101	}
		1102
		1103	sub object_freezer_as_string {
		1104	my ($rdata, $objs) = @_;
		1105
		1106	use Data::Dumper;
		1107
		1108	$$rdata . Dumper $objs
		1109	}
		1110
		1111	sub object_thawer_load {
		1112	my ($filename) = @_;
		1113
		1114	my ($data, $av);
		1115
		1116	(aio_load $filename, $data) >= 0
		1117	or return;
		1118
		1119	unless (aio_stat "$filename.pst") {
		1120	(aio_load "$filename.pst", $av) >= 0
		1121	or return;
		1122
		1123	my $st = eval { Coro::Storable::thaw $av }
		1124	|| eval { my $guard = Coro::Storable::guard; Storable::thaw $av }; #d# compatibility, remove
		1125	$av = $st->{objs};
		1126	}
		1127
		1128	utf8::decode (my $decname = $filename);
		1129	warn sprintf "loading %s (%d,%d)\n",
		1130	$decname, length $data, scalar @{$av || []};
		1131
		1132	($data, $av)
		1133	}
		1134
		1135	=head2 COMMAND CALLBACKS
		1136
		1137	=over 4
		1138
		1139	=cut
578		1140
579	#############################################################################	1141	#############################################################################
580	# command handling &c	1142	# command handling &c
581		1143
582	=item cf::register_command $name => \&callback($ob,$args);	1144	=item cf::register_command $name => \&callback($ob,$args);
…		…
595	push @{ $COMMAND{$name} }, [$caller, $cb];	1157	push @{ $COMMAND{$name} }, [$caller, $cb];
596	}	1158	}
597		1159
598	=item cf::register_extcmd $name => \&callback($pl,$packet);	1160	=item cf::register_extcmd $name => \&callback($pl,$packet);
599		1161
600	Register a callbackf ro execution when the client sends an extcmd packet.	1162	Register a callback for execution when the client sends an (synchronous)
		1163	extcmd packet. Ext commands will be processed in the order they are
		1164	received by the server, like other user commands. The first argument is
		1165	the logged-in player. Ext commands can only be processed after a player
		1166	has logged in successfully.
601		1167
602	If the callback returns something, it is sent back as if reply was being	1168	If the callback returns something, it is sent back as if reply was being
603	called.	1169	called.
604		1170
		1171	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1172
		1173	Register a callback for execution when the client sends an (asynchronous)
		1174	exticmd packet. Exti commands are processed by the server as soon as they
		1175	are received, i.e. out of order w.r.t. other commands. The first argument
		1176	is a client socket. Exti commands can be received anytime, even before
		1177	log-in.
		1178
		1179	If the callback returns something, it is sent back as if reply was being
		1180	called.
		1181
605	=cut	1182	=cut
606		1183
607	sub register_extcmd {	1184	sub register_extcmd {
608	my ($name, $cb) = @_;	1185	my ($name, $cb) = @_;
609		1186
610	my $caller = caller;
611	#warn "registering extcmd '$name' to '$caller'";
612
613	$EXTCMD{$name} = [$cb, $caller];	1187	$EXTCMD{$name} = $cb;
614	}	1188	}
615		1189
616	attach_to_players	1190	sub register_exticmd {
		1191	my ($name, $cb) = @_;
		1192
		1193	$EXTICMD{$name} = $cb;
		1194	}
		1195
		1196	cf::player->attach (
617	on_command => sub {	1197	on_command => sub {
618	my ($pl, $name, $params) = @_;	1198	my ($pl, $name, $params) = @_;
619		1199
620	my $cb = $COMMAND{$name}	1200	my $cb = $COMMAND{$name}
621	or return;	1201	or return;
…		…
627	cf::override;	1207	cf::override;
628	},	1208	},
629	on_extcmd => sub {	1209	on_extcmd => sub {
630	my ($pl, $buf) = @_;	1210	my ($pl, $buf) = @_;
631		1211
632	my $msg = eval { from_json $buf };	1212	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
633		1213
634	if (ref $msg) {	1214	if (ref $msg) {
		1215	my ($type, $reply, @payload) =
		1216	"ARRAY" eq ref $msg
		1217	? @$msg
		1218	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1219
		1220	my @reply;
		1221
635	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1222	if (my $cb = $EXTCMD{$type}) {
636	if (my %reply = $cb->[0]->($pl, $msg)) {	1223	@reply = $cb->($pl, @payload);
637	$pl->ext_reply ($msg->{msgid}, %reply);	1224	}
		1225
		1226	$pl->ext_reply ($reply, @reply)
		1227	if $reply;
		1228
		1229	} else {
		1230	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1231	}
		1232
		1233	cf::override;
		1234	},
		1235	);
		1236
		1237	sub load_extensions {
		1238	cf::sync_job {
		1239	my %todo;
		1240
		1241	for my $path (<$LIBDIR/*.ext>) {
		1242	next unless -r $path;
		1243
		1244	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1245	my $base = $1;
		1246	my $pkg = $1;
		1247	$pkg =~ s/[^[:word:]]/_/g;
		1248	$pkg = "ext::$pkg";
		1249
		1250	open my $fh, "<:utf8", $path
		1251	or die "$path: $!";
		1252
		1253	my $source = do { local $/; <$fh> };
		1254
		1255	my %ext = (
		1256	path => $path,
		1257	base => $base,
		1258	pkg => $pkg,
		1259	);
		1260
		1261	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1262	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1263
		1264	$ext{source} =
		1265	"package $pkg; use strict; use utf8;\n"
		1266	. "#line 1 \"$path\"\n{\n"
		1267	. $source
		1268	. "\n};\n1";
		1269
		1270	$todo{$base} = \%ext;
		1271	}
		1272
		1273	my %done;
		1274	while (%todo) {
		1275	my $progress;
		1276
		1277	while (my ($k, $v) = each %todo) {
		1278	for (split /,\s*/, $v->{meta}{depends}) {
		1279	goto skip
		1280	unless exists $done{$_};
		1281	}
		1282
		1283	warn "... loading '$k' into '$v->{pkg}'\n";
		1284
		1285	unless (eval $v->{source}) {
		1286	my $msg = $@ ? "$v->{path}: $@\n"
		1287	: "$v->{base}: extension inactive.\n";
		1288
		1289	if (exists $v->{meta}{mandatory}) {
		1290	warn $msg;
		1291	warn "mandatory extension failed to load, exiting.\n";
		1292	exit 1;
		1293	}
		1294
		1295	warn $msg;
		1296	}
		1297
		1298	$done{$k} = delete $todo{$k};
		1299	push @EXTS, $v->{pkg};
		1300	$progress = 1;
		1301	}
		1302
		1303	skip:
		1304	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1305	unless $progress;
		1306	}
		1307	};
		1308	}
		1309
		1310	#############################################################################
		1311
		1312	=back
		1313
		1314	=head2 CORE EXTENSIONS
		1315
		1316	Functions and methods that extend core crossfire objects.
		1317
		1318	=cut
		1319
		1320	package cf::player;
		1321
		1322	use Coro::AIO;
		1323
		1324	=head3 cf::player
		1325
		1326	=over 4
		1327
		1328	=item cf::player::num_playing
		1329
		1330	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1331
		1332	=cut
		1333
		1334	sub num_playing {
		1335	scalar grep
		1336	$_->ob->map
		1337	&& !$_->hidden
		1338	&& !$_->ob->flag (cf::FLAG_WIZ),
		1339	cf::player::list
		1340	}
		1341
		1342	=item cf::player::find $login
		1343
		1344	Returns the given player object, loading it if necessary (might block).
		1345
		1346	=cut
		1347
		1348	sub playerdir($) {
		1349	"$PLAYERDIR/"
		1350	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1351	}
		1352
		1353	sub path($) {
		1354	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1355
		1356	(playerdir $login) . "/playerdata"
		1357	}
		1358
		1359	sub find_active($) {
		1360	$cf::PLAYER{$_[0]}
		1361	and $cf::PLAYER{$_[0]}->active
		1362	and $cf::PLAYER{$_[0]}
		1363	}
		1364
		1365	sub exists($) {
		1366	my ($login) = @_;
		1367
		1368	$cf::PLAYER{$login}
		1369	or cf::sync_job { !aio_stat path $login }
		1370	}
		1371
		1372	sub find($) {
		1373	return $cf::PLAYER{$_[0]} || do {
		1374	my $login = $_[0];
		1375
		1376	my $guard = cf::lock_acquire "user_find:$login";
		1377
		1378	$cf::PLAYER{$_[0]} || do {
		1379	# rename old playerfiles to new ones
		1380	#TODO: remove when no longer required
		1381	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1382	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1383	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1384	aio_unlink +(playerdir $login) . "/$login.pl";
		1385
		1386	my $f = new_from_file cf::object::thawer path $login
		1387	or return;
		1388
		1389	my $pl = cf::player::load_pl $f
		1390	or return;
		1391	local $cf::PLAYER_LOADING{$login} = $pl;
		1392	$f->resolve_delayed_derefs;
		1393	$cf::PLAYER{$login} = $pl
		1394	}
		1395	}
		1396	}
		1397
		1398	sub save($) {
		1399	my ($pl) = @_;
		1400
		1401	return if $pl->{deny_save};
		1402
		1403	my $path = path $pl;
		1404	my $guard = cf::lock_acquire "user_save:$path";
		1405
		1406	return if $pl->{deny_save};
		1407
		1408	aio_mkdir playerdir $pl, 0770;
		1409	$pl->{last_save} = $cf::RUNTIME;
		1410
		1411	$pl->save_pl ($path);
		1412	cf::cede_to_tick;
		1413	}
		1414
		1415	sub new($) {
		1416	my ($login) = @_;
		1417
		1418	my $self = create;
		1419
		1420	$self->ob->name ($login);
		1421	$self->{deny_save} = 1;
		1422
		1423	$cf::PLAYER{$login} = $self;
		1424
		1425	$self
		1426	}
		1427
		1428	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1429
		1430	=cut
		1431
		1432	sub send_msg {
		1433	my $ns = shift->ns
		1434	or return;
		1435	$ns->send_msg (@_);
		1436	}
		1437
		1438	=item $pl->quit_character
		1439
		1440	Nukes the player without looking back. If logged in, the connection will
		1441	be destroyed. May block for a long time.
		1442
		1443	=cut
		1444
		1445	sub quit_character {
		1446	my ($pl) = @_;
		1447
		1448	my $name = $pl->ob->name;
		1449
		1450	$pl->{deny_save} = 1;
		1451	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1452
		1453	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1454	$pl->deactivate;
		1455	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1456	$pl->ns->destroy if $pl->ns;
		1457
		1458	my $path = playerdir $pl;
		1459	my $temp = "$path~$cf::RUNTIME~deleting~";
		1460	aio_rename $path, $temp;
		1461	delete $cf::PLAYER{$pl->ob->name};
		1462	$pl->destroy;
		1463
		1464	my $prefix = qr<^~\Q$name\E/>;
		1465
		1466	# nuke player maps
		1467	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1468
		1469	IO::AIO::aio_rmtree $temp;
		1470	}
		1471
		1472	=item $pl->kick
		1473
		1474	Kicks a player out of the game. This destroys the connection.
		1475
		1476	=cut
		1477
		1478	sub kick {
		1479	my ($pl, $kicker) = @_;
		1480
		1481	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1482	$pl->killer ("kicked");
		1483	$pl->ns->destroy;
		1484	}
		1485
		1486	=item cf::player::list_logins
		1487
		1488	Returns am arrayref of all valid playernames in the system, can take a
		1489	while and may block, so not sync_job-capable, ever.
		1490
		1491	=cut
		1492
		1493	sub list_logins {
		1494	my $dirs = aio_readdir $PLAYERDIR
		1495	or return [];
		1496
		1497	my @logins;
		1498
		1499	for my $login (@$dirs) {
		1500	my $path = path $login;
		1501
		1502	# a .pst is a dead give-away for a valid player
		1503	unless (-e "$path.pst") {
		1504	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1505	aio_read $fh, 0, 512, my $buf, 0 or next;
		1506	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1507	}
		1508
		1509	utf8::decode $login;
		1510	push @logins, $login;
		1511	}
		1512
		1513	\@logins
		1514	}
		1515
		1516	=item $player->maps
		1517
		1518	Returns an arrayref of map paths that are private for this
		1519	player. May block.
		1520
		1521	=cut
		1522
		1523	sub maps($) {
		1524	my ($pl) = @_;
		1525
		1526	$pl = ref $pl ? $pl->ob->name : $pl;
		1527
		1528	my $files = aio_readdir playerdir $pl
		1529	or return;
		1530
		1531	my @paths;
		1532
		1533	for (@$files) {
		1534	utf8::decode $_;
		1535	next if /\.(?:pl|pst)$/;
		1536	next unless /^$PATH_SEP/o;
		1537
		1538	push @paths, cf::map::normalise "~$pl/$_";
		1539	}
		1540
		1541	\@paths
		1542	}
		1543
		1544	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1545
		1546	Expand crossfire pod fragments into protocol xml.
		1547
		1548	=cut
		1549
		1550	sub expand_cfpod {
		1551	((my $self), (local $_)) = @_;
		1552
		1553	# escape & and <
		1554	s/&/&amp;/g;
		1555	s/(?<![BIUGHT])</&lt;/g;
		1556
		1557	# this is buggy, it needs to properly take care of nested <'s
		1558
		1559	1 while
		1560	# replace B<>, I<>, U<> etc.
		1561	s/B<([^\>]*)>/<b>$1<\/b>/
		1562	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1563	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1564	|| s/T<([^\>]*)>/<big><b>$1<\/b><\/big>/
		1565	# replace G<male|female> tags
		1566	|| s{G<([^>|]*)\|([^>]*)>}{
		1567	$self->gender ? $2 : $1
		1568	}ge
		1569	# replace H<hint text>
		1570	|| s{H<([^\>]*)>}
		1571	{
		1572	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1573	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1574	"")
		1575	[$self->{hintmode}]
		1576	}ge;
		1577
		1578	# create single paragraphs (very hackish)
		1579	s/(?<=\S)\n(?=\w)/ /g;
		1580
		1581	# compress some whitespace
		1582	s/\s+\n/\n/g; # ws line-ends
		1583	s/\n\n+/\n/g; # double lines
		1584	s/^\n+//; # beginning lines
		1585	s/\n+$//; # ending lines
		1586
		1587	$_
		1588	}
		1589
		1590	sub hintmode {
		1591	$_[0]{hintmode} = $_[1] if @_ > 1;
		1592	$_[0]{hintmode}
		1593	}
		1594
		1595	=item $player->ext_reply ($msgid, @msg)
		1596
		1597	Sends an ext reply to the player.
		1598
		1599	=cut
		1600
		1601	sub ext_reply($$@) {
		1602	my ($self, $id, @msg) = @_;
		1603
		1604	$self->ns->ext_reply ($id, @msg)
		1605	}
		1606
		1607	=item $player->ext_msg ($type, @msg)
		1608
		1609	Sends an ext event to the client.
		1610
		1611	=cut
		1612
		1613	sub ext_msg($$@) {
		1614	my ($self, $type, @msg) = @_;
		1615
		1616	$self->ns->ext_msg ($type, @msg);
		1617	}
		1618
		1619	=head3 cf::region
		1620
		1621	=over 4
		1622
		1623	=cut
		1624
		1625	package cf::region;
		1626
		1627	=item cf::region::find_by_path $path
		1628
		1629	Tries to decuce the likely region for a map knowing only its path.
		1630
		1631	=cut
		1632
		1633	sub find_by_path($) {
		1634	my ($path) = @_;
		1635
		1636	my ($match, $specificity);
		1637
		1638	for my $region (list) {
		1639	if ($region->{match} && $path =~ $region->{match}) {
		1640	($match, $specificity) = ($region, $region->specificity)
		1641	if $region->specificity > $specificity;
		1642	}
		1643	}
		1644
		1645	$match
		1646	}
		1647
		1648	=back
		1649
		1650	=head3 cf::map
		1651
		1652	=over 4
		1653
		1654	=cut
		1655
		1656	package cf::map;
		1657
		1658	use Fcntl;
		1659	use Coro::AIO;
		1660
		1661	use overload
		1662	'""' => \&as_string,
		1663	fallback => 1;
		1664
		1665	our $MAX_RESET = 3600;
		1666	our $DEFAULT_RESET = 3000;
		1667
		1668	sub generate_random_map {
		1669	my ($self, $rmp) = @_;
		1670	# mit "rum" bekleckern, nicht
		1671	$self->_create_random_map (
		1672	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1673	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1674	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1675	$rmp->{exit_on_final_map},
		1676	$rmp->{xsize}, $rmp->{ysize},
		1677	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1678	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1679	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1680	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1681	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1682	(cf::region::find $rmp->{region}), $rmp->{custom}
		1683	)
		1684	}
		1685
		1686	=item cf::map->register ($regex, $prio)
		1687
		1688	Register a handler for the map path matching the given regex at the
		1689	givne priority (higher is better, built-in handlers have priority 0, the
		1690	default).
		1691
		1692	=cut
		1693
		1694	sub register {
		1695	my (undef, $regex, $prio) = @_;
		1696	my $pkg = caller;
		1697
		1698	no strict;
		1699	push @{"$pkg\::ISA"}, __PACKAGE__;
		1700
		1701	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1702	}
		1703
		1704	# also paths starting with '/'
		1705	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1706
		1707	sub thawer_merge {
		1708	my ($self, $merge) = @_;
		1709
		1710	# we have to keep some variables in memory intact
		1711	local $self->{path};
		1712	local $self->{load_path};
		1713
		1714	$self->SUPER::thawer_merge ($merge);
		1715	}
		1716
		1717	sub normalise {
		1718	my ($path, $base) = @_;
		1719
		1720	$path = "$path"; # make sure its a string
		1721
		1722	$path =~ s/\.map$//;
		1723
		1724	# map plan:
		1725	#
		1726	# /! non-realised random map exit (special hack!)
		1727	# {... are special paths that are not being touched
		1728	# ?xxx/... are special absolute paths
		1729	# ?random/... random maps
		1730	# /... normal maps
		1731	# ~user/... per-player map of a specific user
		1732
		1733	$path =~ s/$PATH_SEP/\//go;
		1734
		1735	# treat it as relative path if it starts with
		1736	# something that looks reasonable
		1737	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1738	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1739
		1740	$base =~ s{[^/]+/?$}{};
		1741	$path = "$base/$path";
		1742	}
		1743
		1744	for ($path) {
		1745	redo if s{//}{/};
		1746	redo if s{/\.?/}{/};
		1747	redo if s{/[^/]+/\.\./}{/};
		1748	}
		1749
		1750	$path
		1751	}
		1752
		1753	sub new_from_path {
		1754	my (undef, $path, $base) = @_;
		1755
		1756	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1757
		1758	$path = normalise $path, $base;
		1759
		1760	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1761	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1762	my $self = bless cf::map::new, $pkg;
		1763	$self->{path} = $path; $self->path ($path);
		1764	$self->init; # pass $1 etc.
		1765	return $self;
		1766	}
		1767	}
		1768
		1769	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1770	()
		1771	}
		1772
		1773	sub init {
		1774	my ($self) = @_;
		1775
		1776	$self
		1777	}
		1778
		1779	sub as_string {
		1780	my ($self) = @_;
		1781
		1782	"$self->{path}"
		1783	}
		1784
		1785	# the displayed name, this is a one way mapping
		1786	sub visible_name {
		1787	&as_string
		1788	}
		1789
		1790	# the original (read-only) location
		1791	sub load_path {
		1792	my ($self) = @_;
		1793
		1794	"$MAPDIR/$self->{path}.map"
		1795	}
		1796
		1797	# the temporary/swap location
		1798	sub save_path {
		1799	my ($self) = @_;
		1800
		1801	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1802	"$TMPDIR/$path.map"
		1803	}
		1804
		1805	# the unique path, undef == no special unique path
		1806	sub uniq_path {
		1807	my ($self) = @_;
		1808
		1809	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1810	"$UNIQUEDIR/$path"
		1811	}
		1812
		1813	# and all this just because we cannot iterate over
		1814	# all maps in C++...
		1815	sub change_all_map_light {
		1816	my ($change) = @_;
		1817
		1818	$_->change_map_light ($change)
		1819	for grep $_->outdoor, values %cf::MAP;
		1820	}
		1821
		1822	sub decay_objects {
		1823	my ($self) = @_;
		1824
		1825	return if $self->{deny_reset};
		1826
		1827	$self->do_decay_objects;
		1828	}
		1829
		1830	sub unlink_save {
		1831	my ($self) = @_;
		1832
		1833	utf8::encode (my $save = $self->save_path);
		1834	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1835	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1836	}
		1837
		1838	sub load_header_from($) {
		1839	my ($self, $path) = @_;
		1840
		1841	utf8::encode $path;
		1842	my $f = new_from_file cf::object::thawer $path
		1843	or return;
		1844
		1845	$self->_load_header ($f)
		1846	or return;
		1847
		1848	local $MAP_LOADING{$self->{path}} = $self;
		1849	$f->resolve_delayed_derefs;
		1850
		1851	$self->{load_path} = $path;
		1852
		1853	1
		1854	}
		1855
		1856	sub load_header_orig {
		1857	my ($self) = @_;
		1858
		1859	$self->load_header_from ($self->load_path)
		1860	}
		1861
		1862	sub load_header_temp {
		1863	my ($self) = @_;
		1864
		1865	$self->load_header_from ($self->save_path)
		1866	}
		1867
		1868	sub prepare_temp {
		1869	my ($self) = @_;
		1870
		1871	$self->last_access ((delete $self->{last_access})
		1872	|| $cf::RUNTIME); #d#
		1873	# safety
		1874	$self->{instantiate_time} = $cf::RUNTIME
		1875	if $self->{instantiate_time} > $cf::RUNTIME;
		1876	}
		1877
		1878	sub prepare_orig {
		1879	my ($self) = @_;
		1880
		1881	$self->{load_original} = 1;
		1882	$self->{instantiate_time} = $cf::RUNTIME;
		1883	$self->last_access ($cf::RUNTIME);
		1884	$self->instantiate;
		1885	}
		1886
		1887	sub load_header {
		1888	my ($self) = @_;
		1889
		1890	if ($self->load_header_temp) {
		1891	$self->prepare_temp;
		1892	} else {
		1893	$self->load_header_orig
		1894	or return;
		1895	$self->prepare_orig;
		1896	}
		1897
		1898	$self->{deny_reset} = 1
		1899	if $self->no_reset;
		1900
		1901	$self->default_region (cf::region::find_by_path $self->{path})
		1902	unless $self->default_region;
		1903
		1904	1
		1905	}
		1906
		1907	sub find;
		1908	sub find {
		1909	my ($path, $origin) = @_;
		1910
		1911	$path = normalise $path, $origin && $origin->path;
		1912
		1913	cf::lock_wait "map_data:$path";#d#remove
		1914	cf::lock_wait "map_find:$path";
		1915
		1916	$cf::MAP{$path} || do {
		1917	my $guard1 = cf::lock_acquire "map_find:$path";
		1918	my $guard2 = cf::lock_acquire "map_data:$path"; # just for the fun of it
		1919
		1920	my $map = new_from_path cf::map $path
		1921	or return;
		1922
		1923	$map->{last_save} = $cf::RUNTIME;
		1924
		1925	$map->load_header
		1926	or return;
		1927
		1928	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1929	# doing this can freeze the server in a sync job, obviously
		1930	#$cf::WAIT_FOR_TICK->wait;
		1931	undef $guard1;
		1932	undef $guard2;
		1933	$map->reset;
		1934	return find $path;
		1935	}
		1936
		1937	$cf::MAP{$path} = $map
		1938	}
		1939	}
		1940
		1941	sub pre_load { }
		1942	sub post_load { }
		1943
		1944	sub load {
		1945	my ($self) = @_;
		1946
		1947	local $self->{deny_reset} = 1; # loading can take a long time
		1948
		1949	my $path = $self->{path};
		1950
		1951	{
		1952	my $guard = cf::lock_acquire "map_data:$path";
		1953
		1954	return unless $self->valid;
		1955	return unless $self->in_memory == cf::MAP_SWAPPED;
		1956
		1957	$self->in_memory (cf::MAP_LOADING);
		1958
		1959	$self->alloc;
		1960
		1961	$self->pre_load;
		1962	cf::cede_to_tick;
		1963
		1964	my $f = new_from_file cf::object::thawer $self->{load_path};
		1965	$f->skip_block;
		1966	$self->_load_objects ($f)
		1967	or return;
		1968
		1969	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1970	if delete $self->{load_original};
		1971
		1972	if (my $uniq = $self->uniq_path) {
		1973	utf8::encode $uniq;
		1974	unless (aio_stat $uniq) {
		1975	if (my $f = new_from_file cf::object::thawer $uniq) {
		1976	$self->clear_unique_items;
		1977	$self->_load_objects ($f);
		1978	$f->resolve_delayed_derefs;
638	}	1979	}
639	}	1980	}
640	} else {
641	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
642	}	1981	}
643		1982
644	cf::override;	1983	$f->resolve_delayed_derefs;
		1984
		1985	cf::cede_to_tick;
		1986	# now do the right thing for maps
		1987	$self->link_multipart_objects;
		1988	$self->difficulty ($self->estimate_difficulty)
		1989	unless $self->difficulty;
		1990	cf::cede_to_tick;
		1991
		1992	unless ($self->{deny_activate}) {
		1993	$self->decay_objects;
		1994	$self->fix_auto_apply;
		1995	$self->update_buttons;
		1996	cf::cede_to_tick;
		1997	$self->set_darkness_map;
		1998	cf::cede_to_tick;
		1999	$self->activate;
		2000	}
		2001
		2002	$self->{last_save} = $cf::RUNTIME;
		2003	$self->last_access ($cf::RUNTIME);
		2004
		2005	$self->in_memory (cf::MAP_IN_MEMORY);
645	},	2006	}
646	;
647		2007
648	sub register {	2008	$self->post_load;
		2009	}
		2010
		2011	sub customise_for {
649	my ($base, $pkg) = @_;	2012	my ($self, $ob) = @_;
650		2013
651	#TODO	2014	return find "~" . $ob->name . "/" . $self->{path}
652	}	2015	if $self->per_player;
653		2016
654	sub load_extension {	2017	# return find "?party/" . $ob->name . "/" . $self->{path}
655	my ($path) = @_;	2018	# if $self->per_party;
656		2019
657	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	2020	$self
658	my $base = $1;
659	my $pkg = $1;
660	$pkg =~ s/[^[:word:]]/_/g;
661	$pkg = "ext::$pkg";
662
663	warn "loading '$path' into '$pkg'\n";
664
665	open my $fh, "<:utf8", $path
666	or die "$path: $!";
667
668	my $source =
669	"package $pkg; use strict; use utf8;\n"
670	. "#line 1 \"$path\"\n{\n"
671	. (do { local $/; <$fh> })
672	. "\n};\n1";
673
674	eval $source
675	or die $@ ? "$path: $@\n"
676	: "extension disabled.\n";
677
678	push @exts, $pkg;
679	$ext_pkg{$base} = $pkg;
680
681	# no strict 'refs';
682	# @{"$pkg\::ISA"} = ext::;
683
684	register $base, $pkg;
685	}	2021	}
686		2022
687	sub unload_extension {	2023	# find and load all maps in the 3x3 area around a map
688	my ($pkg) = @_;	2024	sub load_neighbours {
689
690	warn "removing extension $pkg\n";
691
692	# remove hooks
693	#TODO
694	# for my $idx (0 .. $#PLUGIN_EVENT) {
695	# delete $hook[$idx]{$pkg};
696	# }
697
698	# remove commands
699	for my $name (keys %COMMAND) {
700	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
701
702	if (@cb) {
703	$COMMAND{$name} = \@cb;
704	} else {
705	delete $COMMAND{$name};
706	}
707	}
708
709	# remove extcmds
710	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
711	delete $EXTCMD{$name};
712	}
713
714	if (my $cb = $pkg->can ("unload")) {
715	eval {
716	$cb->($pkg);
717	1
718	} or warn "$pkg unloaded, but with errors: $@";
719	}
720
721	Symbol::delete_package $pkg;
722	}
723
724	sub load_extensions {
725	for my $ext (<$LIBDIR/*.ext>) {
726	next unless -r $ext;
727	eval {
728	load_extension $ext;
729	1
730	} or warn "$ext not loaded: $@";
731	}
732	}
733
734	#############################################################################
735	# load/save/clean perl data associated with a map
736
737	*cf::mapsupport::on_clean = sub {
738	my ($map) = @_;	2025	my ($map) = @_;
739		2026
740	my $path = $map->tmpname;	2027	my @neigh; # diagonal neighbours
741	defined $path or return;
742		2028
743	unlink "$path.pst";	2029	for (0 .. 3) {
744	};	2030	my $neigh = $map->tile_path ($_)
		2031	or next;
		2032	$neigh = find $neigh, $map
		2033	or next;
		2034	$neigh->load;
745		2035
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	2036	push @neigh,
		2037	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2038	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2039	}
747		2040
748	#############################################################################	2041	for (grep defined $_->[0], @neigh) {
749	# load/save perl data associated with player->ob objects	2042	my ($path, $origin) = @$_;
750		2043	my $neigh = find $path, $origin
751	sub all_objects(@) {	2044	or next;
752	@_, map all_objects ($_->inv), @_	2045	$neigh->load;
		2046	}
753	}	2047	}
754		2048
755	# TODO: compatibility cruft, remove when no longer needed	2049	sub find_sync {
756	attach_to_players	2050	my ($path, $origin) = @_;
757	on_load => sub {
758	my ($pl, $path) = @_;
759		2051
760	for my $o (all_objects $pl->ob) {	2052	cf::sync_job { find $path, $origin }
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2053	}
762	$o->set_ob_key_value ("_perl_data");
763		2054
764	%$o = %{ Storable::thaw pack "H*", $value };	2055	sub do_load_sync {
		2056	my ($map) = @_;
		2057
		2058	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2059	if $Coro::current == $Coro::main;
		2060
		2061	cf::sync_job { $map->load };
		2062	}
		2063
		2064	our %MAP_PREFETCH;
		2065	our $MAP_PREFETCHER = undef;
		2066
		2067	sub find_async {
		2068	my ($path, $origin, $load) = @_;
		2069
		2070	$path = normalise $path, $origin && $origin->{path};
		2071
		2072	if (my $map = $cf::MAP{$path}) {
		2073	return $map if !$load || $map->in_memory == cf::MAP_IN_MEMORY;
		2074	}
		2075
		2076	$MAP_PREFETCH{$path} |= $load;
		2077
		2078	$MAP_PREFETCHER ||= cf::async {
		2079	$Coro::current->{desc} = "map prefetcher";
		2080
		2081	while (%MAP_PREFETCH) {
		2082	while (my ($k, $v) = each %MAP_PREFETCH) {
		2083	if (my $map = find $k) {
		2084	$map->load if $v;
		2085	}
		2086
		2087	delete $MAP_PREFETCH{$k};
765	}	2088	}
766	}	2089	}
		2090	undef $MAP_PREFETCHER;
		2091	};
		2092	$MAP_PREFETCHER->prio (6);
		2093
		2094	()
		2095	}
		2096
		2097	sub save {
		2098	my ($self) = @_;
		2099
		2100	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2101
		2102	$self->{last_save} = $cf::RUNTIME;
		2103
		2104	return unless $self->dirty;
		2105
		2106	my $save = $self->save_path; utf8::encode $save;
		2107	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2108
		2109	$self->{load_path} = $save;
		2110
		2111	return if $self->{deny_save};
		2112
		2113	local $self->{last_access} = $self->last_access;#d#
		2114
		2115	cf::async {
		2116	$Coro::current->{desc} = "map player save";
		2117	$_->contr->save for $self->players;
		2118	};
		2119
		2120	if ($uniq) {
		2121	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2122	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2123	} else {
		2124	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
767	},	2125	}
768	;	2126	}
769		2127
770	#############################################################################	2128	sub swap_out {
		2129	my ($self) = @_;
771		2130
772	=head2 CORE EXTENSIONS	2131	# save first because save cedes
		2132	$self->save;
773		2133
774	Functions and methods that extend core crossfire objects.	2134	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2135
		2136	return if $self->players;
		2137	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2138	return if $self->{deny_save};
		2139
		2140	$self->in_memory (cf::MAP_SWAPPED);
		2141
		2142	$self->deactivate;
		2143	$_->clear_links_to ($self) for values %cf::MAP;
		2144	$self->clear;
		2145	}
		2146
		2147	sub reset_at {
		2148	my ($self) = @_;
		2149
		2150	# TODO: safety, remove and allow resettable per-player maps
		2151	return 1e99 if $self->{deny_reset};
		2152
		2153	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2154	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2155
		2156	$time + $to
		2157	}
		2158
		2159	sub should_reset {
		2160	my ($self) = @_;
		2161
		2162	$self->reset_at <= $cf::RUNTIME
		2163	}
		2164
		2165	sub reset {
		2166	my ($self) = @_;
		2167
		2168	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2169
		2170	return if $self->players;
		2171
		2172	warn "resetting map ", $self->path;
		2173
		2174	$self->in_memory (cf::MAP_SWAPPED);
		2175
		2176	# need to save uniques path
		2177	unless ($self->{deny_save}) {
		2178	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2179
		2180	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2181	if $uniq;
		2182	}
		2183
		2184	delete $cf::MAP{$self->path};
		2185
		2186	$self->deactivate;
		2187	$_->clear_links_to ($self) for values %cf::MAP;
		2188	$self->clear;
		2189
		2190	$self->unlink_save;
		2191	$self->destroy;
		2192	}
		2193
		2194	my $nuke_counter = "aaaa";
		2195
		2196	sub nuke {
		2197	my ($self) = @_;
		2198
		2199	{
		2200	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2201
		2202	delete $cf::MAP{$self->path};
		2203
		2204	$self->unlink_save;
		2205
		2206	bless $self, "cf::map";
		2207	delete $self->{deny_reset};
		2208	$self->{deny_save} = 1;
		2209	$self->reset_timeout (1);
		2210	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2211
		2212	$cf::MAP{$self->path} = $self;
		2213	}
		2214
		2215	$self->reset; # polite request, might not happen
		2216	}
		2217
		2218	=item $maps = cf::map::tmp_maps
		2219
		2220	Returns an arrayref with all map paths of currently instantiated and saved
		2221	maps. May block.
		2222
		2223	=cut
		2224
		2225	sub tmp_maps() {
		2226	[
		2227	map {
		2228	utf8::decode $_;
		2229	/\.map$/
		2230	? normalise $_
		2231	: ()
		2232	} @{ aio_readdir $TMPDIR or [] }
		2233	]
		2234	}
		2235
		2236	=item $maps = cf::map::random_maps
		2237
		2238	Returns an arrayref with all map paths of currently instantiated and saved
		2239	random maps. May block.
		2240
		2241	=cut
		2242
		2243	sub random_maps() {
		2244	[
		2245	map {
		2246	utf8::decode $_;
		2247	/\.map$/
		2248	? normalise "?random/$_"
		2249	: ()
		2250	} @{ aio_readdir $RANDOMDIR or [] }
		2251	]
		2252	}
		2253
		2254	=item cf::map::unique_maps
		2255
		2256	Returns an arrayref of paths of all shared maps that have
		2257	instantiated unique items. May block.
		2258
		2259	=cut
		2260
		2261	sub unique_maps() {
		2262	[
		2263	map {
		2264	utf8::decode $_;
		2265	/\.map$/
		2266	? normalise $_
		2267	: ()
		2268	} @{ aio_readdir $UNIQUEDIR or [] }
		2269	]
		2270	}
		2271
		2272	package cf;
		2273
		2274	=back
		2275
		2276	=head3 cf::object
		2277
		2278	=cut
		2279
		2280	package cf::object;
775		2281
776	=over 4	2282	=over 4
777		2283
778	=item cf::player::exists $login	2284	=item $ob->inv_recursive
779		2285
780	Returns true when the given account exists.	2286	Returns the inventory of the object _and_ their inventories, recursively.
781		2287
782	=cut	2288	=cut
783		2289
784	sub cf::player::exists($) {	2290	sub inv_recursive_;
785	cf::player::find $_[0]	2291	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2292	map { $_, inv_recursive_ $_->inv } @_
787	}	2293	}
		2294
		2295	sub inv_recursive {
		2296	inv_recursive_ inv $_[0]
		2297	}
		2298
		2299	=item $ref = $ob->ref
		2300
		2301	creates and returns a persistent reference to an objetc that can be stored as a string.
		2302
		2303	=item $ob = cf::object::deref ($refstring)
		2304
		2305	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2306	even if the object actually exists. May block.
		2307
		2308	=cut
		2309
		2310	sub deref {
		2311	my ($ref) = @_;
		2312
		2313	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2314	my ($uuid, $name) = ($1, $2);
		2315	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2316	or return;
		2317	$pl->ob->uuid eq $uuid
		2318	or return;
		2319
		2320	$pl->ob
		2321	} else {
		2322	warn "$ref: cannot resolve object reference\n";
		2323	undef
		2324	}
		2325	}
		2326
		2327	package cf;
		2328
		2329	=back
		2330
		2331	=head3 cf::object::player
		2332
		2333	=over 4
788		2334
789	=item $player_object->reply ($npc, $msg[, $flags])	2335	=item $player_object->reply ($npc, $msg[, $flags])
790		2336
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2337	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
792	can be C<undef>. Does the right thing when the player is currently in a	2338	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		2340
795	=cut	2341	=cut
796		2342
797	# rough implementation of a future "reply" method that works	2343	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	2344	# with dialog boxes.
		2345	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	2346	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	2347	my ($self, $npc, $msg, $flags) = @_;
801		2348
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2349	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		2350
804	if ($self->{record_replies}) {	2351	if ($self->{record_replies}) {
805	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2352	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2353
806	} else {	2354	} else {
		2355	my $pl = $self->contr;
		2356
		2357	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2358	my $dialog = $pl->{npc_dialog};
		2359	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2360
		2361	} else {
807	$msg = $npc->name . " says: $msg" if $npc;	2362	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	2363	$self->message ($msg, $flags);
		2364	}
809	}	2365	}
810	}	2366	}
811		2367
812	=item $player->ext_reply ($msgid, $msgtype, %msg)	2368	=item $object->send_msg ($channel, $msg, $color, [extra...])
813		2369
814	Sends an ext reply to the player.
815
816	=cut	2370	=cut
817		2371
818	sub cf::player::ext_reply($$$%) {	2372	sub cf::object::send_msg {
819	my ($self, $id, %msg) = @_;	2373	my $pl = shift->contr
820		2374	or return;
821	$msg{msgid} = $id;	2375	$pl->send_msg (@_);
822
823	$self->send ("ext " . to_json \%msg);
824	}	2376	}
825		2377
826	=item $player_object->may ("access")	2378	=item $player_object->may ("access")
827		2379
828	Returns wether the given player is authorized to access resource "access"	2380	Returns wether the given player is authorized to access resource "access"
…		…
837	(ref $cf::CFG{"may_$access"}	2389	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2390	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	2391	: $cf::CFG{"may_$access"})
840	}	2392	}
841		2393
842	=cut	2394	=item $player_object->enter_link
843		2395
844	#############################################################################	2396	Freezes the player and moves him/her to a special map (C<{link}>).
		2397
		2398	The player should be reasonably safe there for short amounts of time. You
		2399	I<MUST> call C<leave_link> as soon as possible, though.
		2400
		2401	Will never block.
		2402
		2403	=item $player_object->leave_link ($map, $x, $y)
		2404
		2405	Moves the player out of the special C<{link}> map onto the specified
		2406	map. If the map is not valid (or omitted), the player will be moved back
		2407	to the location he/she was before the call to C<enter_link>, or, if that
		2408	fails, to the emergency map position.
		2409
		2410	Might block.
		2411
		2412	=cut
		2413
		2414	sub link_map {
		2415	unless ($LINK_MAP) {
		2416	$LINK_MAP = cf::map::find "{link}"
		2417	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2418	$LINK_MAP->load;
		2419	}
		2420
		2421	$LINK_MAP
		2422	}
		2423
		2424	sub cf::object::player::enter_link {
		2425	my ($self) = @_;
		2426
		2427	$self->deactivate_recursive;
		2428
		2429	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2430
		2431	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2432	if $self->map && $self->map->{path} ne "{link}";
		2433
		2434	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2435	}
		2436
		2437	sub cf::object::player::leave_link {
		2438	my ($self, $map, $x, $y) = @_;
		2439
		2440	return unless $self->contr->active;
		2441
		2442	my $link_pos = delete $self->{_link_pos};
		2443
		2444	unless ($map) {
		2445	# restore original map position
		2446	($map, $x, $y) = @{ $link_pos || [] };
		2447	$map = cf::map::find $map;
		2448
		2449	unless ($map) {
		2450	($map, $x, $y) = @$EMERGENCY_POSITION;
		2451	$map = cf::map::find $map
		2452	or die "FATAL: cannot load emergency map\n";
		2453	}
		2454	}
		2455
		2456	($x, $y) = (-1, -1)
		2457	unless (defined $x) && (defined $y);
		2458
		2459	# use -1 or undef as default coordinates, not 0, 0
		2460	($x, $y) = ($map->enter_x, $map->enter_y)
		2461	if $x <=0 && $y <= 0;
		2462
		2463	$map->load;
		2464	$map->load_neighbours;
		2465
		2466	return unless $self->contr->active;
		2467	$self->activate_recursive;
		2468
		2469	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2470	$self->enter_map ($map, $x, $y);
		2471	}
		2472
		2473	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2474
		2475	Moves the player to the given map-path and coordinates by first freezing
		2476	her, loading and preparing them map, calling the provided $check callback
		2477	that has to return the map if sucecssful, and then unfreezes the player on
		2478	the new (success) or old (failed) map position. In either case, $done will
		2479	be called at the end of this process.
		2480
		2481	=cut
		2482
		2483	our $GOTOGEN;
		2484
		2485	sub cf::object::player::goto {
		2486	my ($self, $path, $x, $y, $check, $done) = @_;
		2487
		2488	# do generation counting so two concurrent goto's will be executed in-order
		2489	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2490
		2491	$self->enter_link;
		2492
		2493	(async {
		2494	$Coro::current->{desc} = "player::goto $path $x $y";
		2495
		2496	# *tag paths override both path and x|y
		2497	if ($path =~ /^\*(.*)$/) {
		2498	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2499	my $ob = $obs[rand @obs];
		2500
		2501	# see if we actually can go there
		2502	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2503	$ob = $obs[rand @obs];
		2504	} else {
		2505	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2506	}
		2507	# else put us there anyways for now #d#
		2508
		2509	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2510	} else {
		2511	($path, $x, $y) = (undef, undef, undef);
		2512	}
		2513	}
		2514
		2515	my $map = eval {
		2516	my $map = defined $path ? cf::map::find $path : undef;
		2517
		2518	if ($map) {
		2519	$map = $map->customise_for ($self);
		2520	$map = $check->($map) if $check && $map;
		2521	} else {
		2522	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2523	}
		2524
		2525	$map
		2526	};
		2527
		2528	if ($@) {
		2529	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2530	LOG llevError | logBacktrace, Carp::longmess $@;
		2531	}
		2532
		2533	if ($gen == $self->{_goto_generation}) {
		2534	delete $self->{_goto_generation};
		2535	$self->leave_link ($map, $x, $y);
		2536	}
		2537
		2538	$done->() if $done;
		2539	})->prio (1);
		2540	}
		2541
		2542	=item $player_object->enter_exit ($exit_object)
		2543
		2544	=cut
		2545
		2546	sub parse_random_map_params {
		2547	my ($spec) = @_;
		2548
		2549	my $rmp = { # defaults
		2550	xsize => (cf::rndm 15, 40),
		2551	ysize => (cf::rndm 15, 40),
		2552	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2553	#layout => string,
		2554	};
		2555
		2556	for (split /\n/, $spec) {
		2557	my ($k, $v) = split /\s+/, $_, 2;
		2558
		2559	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2560	}
		2561
		2562	$rmp
		2563	}
		2564
		2565	sub prepare_random_map {
		2566	my ($exit) = @_;
		2567
		2568	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2569
		2570	# all this does is basically replace the /! path by
		2571	# a new random map path (?random/...) with a seed
		2572	# that depends on the exit object
		2573
		2574	my $rmp = parse_random_map_params $exit->msg;
		2575
		2576	if ($exit->map) {
		2577	$rmp->{region} = $exit->region->name;
		2578	$rmp->{origin_map} = $exit->map->path;
		2579	$rmp->{origin_x} = $exit->x;
		2580	$rmp->{origin_y} = $exit->y;
		2581	}
		2582
		2583	$rmp->{random_seed} ||= $exit->random_seed;
		2584
		2585	my $data = cf::to_json $rmp;
		2586	my $md5 = Digest::MD5::md5_hex $data;
		2587	my $meta = "$RANDOMDIR/$md5.meta";
		2588
		2589	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2590	aio_write $fh, 0, (length $data), $data, 0;
		2591	undef $fh;
		2592	aio_rename "$meta~", $meta;
		2593
		2594	$exit->slaying ("?random/$md5");
		2595	$exit->msg (undef);
		2596	}
		2597	}
		2598
		2599	sub cf::object::player::enter_exit {
		2600	my ($self, $exit) = @_;
		2601
		2602	return unless $self->type == cf::PLAYER;
		2603
		2604	if ($exit->slaying eq "/!") {
		2605	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2606	# the problem is that $exit might not survive long enough
		2607	# so it needs to be done right now, right here
		2608	cf::sync_job { prepare_random_map $exit };
		2609	}
		2610
		2611	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2612	my $hp = $exit->stats->hp;
		2613	my $sp = $exit->stats->sp;
		2614
		2615	$self->enter_link;
		2616
		2617	# if exit is damned, update players death & WoR home-position
		2618	$self->contr->savebed ($slaying, $hp, $sp)
		2619	if $exit->flag (FLAG_DAMNED);
		2620
		2621	(async {
		2622	$Coro::current->{desc} = "enter_exit $slaying $hp $sp";
		2623
		2624	$self->deactivate_recursive; # just to be sure
		2625	unless (eval {
		2626	$self->goto ($slaying, $hp, $sp);
		2627
		2628	1;
		2629	}) {
		2630	$self->message ("Something went wrong deep within the crossfire server. "
		2631	. "I'll try to bring you back to the map you were before. "
		2632	. "Please report this to the dungeon master!",
		2633	cf::NDI_UNIQUE | cf::NDI_RED);
		2634
		2635	warn "ERROR in enter_exit: $@";
		2636	$self->leave_link;
		2637	}
		2638	})->prio (1);
		2639	}
		2640
		2641	=head3 cf::client
		2642
		2643	=over 4
		2644
		2645	=item $client->send_drawinfo ($text, $flags)
		2646
		2647	Sends a drawinfo packet to the client. Circumvents output buffering so
		2648	should not be used under normal circumstances.
		2649
		2650	=cut
		2651
		2652	sub cf::client::send_drawinfo {
		2653	my ($self, $text, $flags) = @_;
		2654
		2655	utf8::encode $text;
		2656	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2657	}
		2658
		2659	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2660
		2661	Send a drawinfo or msg packet to the client, formatting the msg for the
		2662	client if neccessary. C<$type> should be a string identifying the type of
		2663	the message, with C<log> being the default. If C<$color> is negative, suppress
		2664	the message unless the client supports the msg packet.
		2665
		2666	=cut
		2667
		2668	our %CHANNEL = (
		2669	"c/identify" => {
		2670	id => "infobox",
		2671	title => "Identify",
		2672	reply => undef,
		2673	tooltip => "Items recently identified",
		2674	},
		2675	"c/examine" => {
		2676	id => "infobox",
		2677	title => "Examine",
		2678	reply => undef,
		2679	tooltip => "Signs and other items you examined",
		2680	},
		2681	"c/lookat" => {
		2682	id => "infobox",
		2683	title => "Look",
		2684	reply => undef,
		2685	tooltip => "What you saw there",
		2686	},
		2687	);
		2688
		2689	sub cf::client::send_msg {
		2690	my ($self, $channel, $msg, $color, @extra) = @_;
		2691
		2692	$msg = $self->pl->expand_cfpod ($msg);
		2693
		2694	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2695
		2696	# check predefined channels, for the benefit of C
		2697	if ($CHANNEL{$channel}) {
		2698	$channel = $CHANNEL{$channel};
		2699
		2700	$self->ext_msg (channel_info => $channel)
		2701	if $self->can_msg;
		2702
		2703	$channel = $channel->{id};
		2704
		2705	} elsif (ref $channel) {
		2706	# send meta info to client, if not yet sent
		2707	unless (exists $self->{channel}{$channel->{id}}) {
		2708	$self->{channel}{$channel->{id}} = $channel;
		2709	$self->ext_msg (channel_info => $channel)
		2710	if $self->can_msg;
		2711	}
		2712
		2713	$channel = $channel->{id};
		2714	}
		2715
		2716	return unless @extra || length $msg;
		2717
		2718	if ($self->can_msg) {
		2719	# default colour, mask it out
		2720	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2721	if $color & cf::NDI_DEF;
		2722
		2723	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2724	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2725	} else {
		2726	if ($color >= 0) {
		2727	# replace some tags by gcfclient-compatible ones
		2728	for ($msg) {
		2729	1 while
		2730	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2731	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2732	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2733	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2734	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2735	}
		2736
		2737	$color &= cf::NDI_COLOR_MASK;
		2738
		2739	utf8::encode $msg;
		2740
		2741	if (0 && $msg =~ /\[/) {
		2742	# COMMAND/INFO
		2743	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2744	} else {
		2745	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2746	$self->send_packet ("drawinfo $color $msg")
		2747	}
		2748	}
		2749	}
		2750	}
		2751
		2752	=item $client->ext_msg ($type, @msg)
		2753
		2754	Sends an ext event to the client.
		2755
		2756	=cut
		2757
		2758	sub cf::client::ext_msg($$@) {
		2759	my ($self, $type, @msg) = @_;
		2760
		2761	if ($self->extcmd == 2) {
		2762	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2763	} elsif ($self->extcmd == 1) { # TODO: remove
		2764	push @msg, msgtype => "event_$type";
		2765	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2766	}
		2767	}
		2768
		2769	=item $client->ext_reply ($msgid, @msg)
		2770
		2771	Sends an ext reply to the client.
		2772
		2773	=cut
		2774
		2775	sub cf::client::ext_reply($$@) {
		2776	my ($self, $id, @msg) = @_;
		2777
		2778	if ($self->extcmd == 2) {
		2779	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2780	} elsif ($self->extcmd == 1) {
		2781	#TODO: version 1, remove
		2782	unshift @msg, msgtype => "reply", msgid => $id;
		2783	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2784	}
		2785	}
		2786
		2787	=item $success = $client->query ($flags, "text", \&cb)
		2788
		2789	Queues a query to the client, calling the given callback with
		2790	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2791	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2792
		2793	Queries can fail, so check the return code. Or don't, as queries will
		2794	become reliable at some point in the future.
		2795
		2796	=cut
		2797
		2798	sub cf::client::query {
		2799	my ($self, $flags, $text, $cb) = @_;
		2800
		2801	return unless $self->state == ST_PLAYING
		2802	|| $self->state == ST_SETUP
		2803	|| $self->state == ST_CUSTOM;
		2804
		2805	$self->state (ST_CUSTOM);
		2806
		2807	utf8::encode $text;
		2808	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2809
		2810	$self->send_packet ($self->{query_queue}[0][0])
		2811	if @{ $self->{query_queue} } == 1;
		2812
		2813	1
		2814	}
		2815
		2816	cf::client->attach (
		2817	on_connect => sub {
		2818	my ($ns) = @_;
		2819
		2820	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2821	},
		2822	on_reply => sub {
		2823	my ($ns, $msg) = @_;
		2824
		2825	# this weird shuffling is so that direct followup queries
		2826	# get handled first
		2827	my $queue = delete $ns->{query_queue}
		2828	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2829
		2830	(shift @$queue)->[1]->($msg);
		2831	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2832
		2833	push @{ $ns->{query_queue} }, @$queue;
		2834
		2835	if (@{ $ns->{query_queue} } == @$queue) {
		2836	if (@$queue) {
		2837	$ns->send_packet ($ns->{query_queue}[0][0]);
		2838	} else {
		2839	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2840	}
		2841	}
		2842	},
		2843	on_exticmd => sub {
		2844	my ($ns, $buf) = @_;
		2845
		2846	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2847
		2848	if (ref $msg) {
		2849	my ($type, $reply, @payload) =
		2850	"ARRAY" eq ref $msg
		2851	? @$msg
		2852	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2853
		2854	my @reply;
		2855
		2856	if (my $cb = $EXTICMD{$type}) {
		2857	@reply = $cb->($ns, @payload);
		2858	}
		2859
		2860	$ns->ext_reply ($reply, @reply)
		2861	if $reply;
		2862
		2863	} else {
		2864	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2865	}
		2866
		2867	cf::override;
		2868	},
		2869	);
		2870
		2871	=item $client->async (\&cb)
		2872
		2873	Create a new coroutine, running the specified callback. The coroutine will
		2874	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2875	or loss of connection).
		2876
		2877	=cut
		2878
		2879	sub cf::client::async {
		2880	my ($self, $cb) = @_;
		2881
		2882	my $coro = &Coro::async ($cb);
		2883
		2884	$coro->on_destroy (sub {
		2885	delete $self->{_coro}{$coro+0};
		2886	});
		2887
		2888	$self->{_coro}{$coro+0} = $coro;
		2889
		2890	$coro
		2891	}
		2892
		2893	cf::client->attach (
		2894	on_destroy => sub {
		2895	my ($ns) = @_;
		2896
		2897	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2898	},
		2899	);
		2900
		2901	=back
		2902
845		2903
846	=head2 SAFE SCRIPTING	2904	=head2 SAFE SCRIPTING
847		2905
848	Functions that provide a safe environment to compile and execute	2906	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	2907	snippets of perl code without them endangering the safety of the server
…		…
856	our $safe = new Safe "safe";	2914	our $safe = new Safe "safe";
857	our $safe_hole = new Safe::Hole;	2915	our $safe_hole = new Safe::Hole;
858		2916
859	$SIG{FPE} = 'IGNORE';	2917	$SIG{FPE} = 'IGNORE';
860		2918
861	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2919	$safe->permit_only (Opcode::opset qw(
		2920	:base_core :base_mem :base_orig :base_math
		2921	grepstart grepwhile mapstart mapwhile
		2922	sort time
		2923	));
862		2924
863	# here we export the classes and methods available to script code	2925	# here we export the classes and methods available to script code
864		2926
865	=pod	2927	=pod
866		2928
867	The following fucntions and emthods are available within a safe environment:	2929	The following functions and methods are available within a safe environment:
868		2930
869	cf::object contr pay_amount pay_player	2931	cf::object
		2932	contr pay_amount pay_player map x y force_find force_add destroy
		2933	insert remove name archname title slaying race decrease_ob_nr
		2934
870	cf::object::player player	2935	cf::object::player
871	cf::player peaceful	2936	player
		2937
		2938	cf::player
		2939	peaceful
		2940
		2941	cf::map
		2942	trigger
872		2943
873	=cut	2944	=cut
874		2945
875	for (	2946	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	2947	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2948	insert remove inv name archname title slaying race
		2949	decrease_ob_nr destroy)],
877	["cf::object::player" => qw(player)],	2950	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	2951	["cf::player" => qw(peaceful)],
		2952	["cf::map" => qw(trigger)],
879	) {	2953	) {
880	no strict 'refs';	2954	no strict 'refs';
881	my ($pkg, @funs) = @$_;	2955	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2956	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	2957	for @funs;
…		…
951	=back	3025	=back
952		3026
953	=cut	3027	=cut
954		3028
955	#############################################################################	3029	#############################################################################
		3030	# the server's init and main functions
956		3031
957	=head2 EXTENSION DATABASE SUPPORT	3032	sub load_facedata($) {
		3033	my ($path) = @_;
958		3034
959	Crossfire maintains a very simple database for extension use. It can	3035	# HACK to clear player env face cache, we need some signal framework
960	currently store anything that can be serialised using Storable, which	3036	# for this (global event?)
961	excludes objects.	3037	%ext::player_env::MUSIC_FACE_CACHE = ();
962		3038
963	The parameter C<$family> should best start with the name of the extension	3039	my $enc = JSON::XS->new->utf8->canonical->relaxed;
964	using it, it should be unique.
965		3040
966	=over 4	3041	warn "loading facedata from $path\n";
967		3042
968	=item $hashref = cf::db_get $family	3043	my $facedata;
		3044	0 < aio_load $path, $facedata
		3045	or die "$path: $!";
969		3046
970	Return a hashref for use by the extension C<$family>, which can be	3047	$facedata = Coro::Storable::thaw $facedata;
971	modified. After modifications, you have to call C<cf::db_dirty> or
972	C<cf::db_sync>.
973		3048
974	=item $value = cf::db_get $family => $key	3049	$facedata->{version} == 2
		3050	or cf::cleanup "$path: version mismatch, cannot proceed.";
975		3051
976	Returns a single value from the database	3052	# patch in the exptable
977		3053	$facedata->{resource}{"res/exp_table"} = {
978	=item cf::db_put $family => $hashref	3054	type => FT_RSRC,
979		3055	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
980	Stores the given family hashref into the database. Updates are delayed, if
981	you want the data to be synced to disk immediately, use C<cf::db_sync>.
982
983	=item cf::db_put $family => $key => $value
984
985	Stores the given C<$value> in the family hash. Updates are delayed, if you
986	want the data to be synced to disk immediately, use C<cf::db_sync>.
987
988	=item cf::db_dirty
989
990	Marks the database as dirty, to be updated at a later time.
991
992	=item cf::db_sync
993
994	Immediately write the database to disk I<if it is dirty>.
995
996	=cut
997
998	our $DB;
999
1000	{
1001	my $path = cf::localdir . "/database.pst";
1002
1003	sub db_load() {
1004	warn "loading database $path\n";#d# remove later
1005	$DB = stat $path ? Storable::retrieve $path : { };
1006	}
1007
1008	my $pid;
1009
1010	sub db_save() {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;
1017	cf::_exit 0 if defined $pid;
1018	}
1019	}
1020
1021	my $dirty;
1022
1023	sub db_sync() {
1024	db_save if $dirty;
1025	undef $dirty;
1026	}
1027
1028	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1029	db_sync;
1030	});	3056	};
		3057	cf::cede_to_tick;
1031		3058
1032	sub db_dirty() {
1033	$dirty = 1;
1034	$idle->start;
1035	}	3059	{
		3060	my $faces = $facedata->{faceinfo};
1036		3061
1037	sub db_get($;$) {	3062	while (my ($face, $info) = each %$faces) {
1038	@_ >= 2	3063	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1039	? $DB->{$_[0]}{$_[1]}	3064	cf::face::set_visibility $idx, $info->{visibility};
1040	: ($DB->{$_[0]} ||= { })	3065	cf::face::set_magicmap $idx, $info->{magicmap};
1041	}	3066	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3067	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1042		3068
1043	sub db_put($$;$) {	3069	cf::cede_to_tick;
1044	if (@_ >= 3) {
1045	$DB->{$_[0]}{$_[1]} = $_[2];
1046	} else {
1047	$DB->{$_[0]} = $_[1];
1048	}
1049	db_dirty;
1050	}
1051
1052	attach_global
1053	prio => 10000,
1054	on_cleanup => sub {
1055	db_sync;
1056	},	3070	}
		3071
		3072	while (my ($face, $info) = each %$faces) {
		3073	next unless $info->{smooth};
		3074	my $idx = cf::face::find $face
		3075	or next;
		3076	if (my $smooth = cf::face::find $info->{smooth}) {
		3077	cf::face::set_smooth $idx, $smooth;
		3078	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3079	} else {
		3080	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3081	}
		3082
		3083	cf::cede_to_tick;
		3084	}
1057	;	3085	}
1058	}
1059		3086
1060	#############################################################################	3087	{
1061	# the server's main()	3088	my $anims = $facedata->{animinfo};
1062		3089
1063	sub cfg_load {	3090	while (my ($anim, $info) = each %$anims) {
		3091	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3092	cf::cede_to_tick;
		3093	}
		3094
		3095	cf::anim::invalidate_all; # d'oh
		3096	}
		3097
		3098	{
		3099	# TODO: for gcfclient pleasure, we should give resources
		3100	# that gcfclient doesn't grok a >10000 face index.
		3101	my $res = $facedata->{resource};
		3102
		3103	my $soundconf = delete $res->{"res/sound.conf"};
		3104
		3105	while (my ($name, $info) = each %$res) {
		3106	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3107	my $data;
		3108
		3109	if ($info->{type} & 1) {
		3110	# prepend meta info
		3111
		3112	my $meta = $enc->encode ({
		3113	name => $name,
		3114	%{ $info->{meta} || {} },
		3115	});
		3116
		3117	$data = pack "(w/a*)*", $meta, $info->{data};
		3118	} else {
		3119	$data = $info->{data};
		3120	}
		3121
		3122	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3123	cf::face::set_type $idx, $info->{type};
		3124
		3125	cf::cede_to_tick;
		3126	}
		3127
		3128	if ($soundconf) {
		3129	$soundconf = $enc->decode (delete $soundconf->{data});
		3130
		3131	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3132	my $sound = $soundconf->{compat}[$_]
		3133	or next;
		3134
		3135	my $face = cf::face::find "sound/$sound->[1]";
		3136	cf::sound::set $sound->[0] => $face;
		3137	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3138	}
		3139
		3140	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3141	my $face = cf::face::find "sound/$v";
		3142	cf::sound::set $k => $face;
		3143	}
		3144	}
		3145	}
		3146
		3147	1
		3148	}
		3149
		3150	register_exticmd fx_want => sub {
		3151	my ($ns, $want) = @_;
		3152
		3153	while (my ($k, $v) = each %$want) {
		3154	$ns->fx_want ($k, $v);
		3155	}
		3156	};
		3157
		3158	sub reload_regions {
		3159	# HACK to clear player env face cache, we need some signal framework
		3160	# for this (global event?)
		3161	%ext::player_env::MUSIC_FACE_CACHE = ();
		3162
		3163	load_resource_file "$MAPDIR/regions"
		3164	or die "unable to load regions file\n";
		3165
		3166	for (cf::region::list) {
		3167	$_->{match} = qr/$_->{match}/
		3168	if exists $_->{match};
		3169	}
		3170	}
		3171
		3172	sub reload_facedata {
		3173	load_facedata "$DATADIR/facedata"
		3174	or die "unable to load facedata\n";
		3175	}
		3176
		3177	sub reload_archetypes {
		3178	load_resource_file "$DATADIR/archetypes"
		3179	or die "unable to load archetypes\n";
		3180	#d# NEED to laod twice to resolve forward references
		3181	# this really needs to be done in an extra post-pass
		3182	# (which needs to be synchronous, so solve it differently)
		3183	load_resource_file "$DATADIR/archetypes"
		3184	or die "unable to load archetypes\n";
		3185	}
		3186
		3187	sub reload_treasures {
		3188	load_resource_file "$DATADIR/treasures"
		3189	or die "unable to load treasurelists\n";
		3190	}
		3191
		3192	sub reload_resources {
		3193	warn "reloading resource files...\n";
		3194
		3195	reload_regions;
		3196	reload_facedata;
		3197	#reload_archetypes;#d#
		3198	reload_archetypes;
		3199	reload_treasures;
		3200
		3201	warn "finished reloading resource files\n";
		3202	}
		3203
		3204	sub init {
		3205	reload_resources;
		3206	}
		3207
		3208	sub reload_config {
1064	open my $fh, "<:utf8", cf::confdir . "/config"	3209	open my $fh, "<:utf8", "$CONFDIR/config"
1065	or return;	3210	or return;
1066		3211
1067	local $/;	3212	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	3213	*CFG = YAML::Syck::Load <$fh>;
		3214
		3215	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3216
		3217	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3218	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3219
		3220	if (exists $CFG{mlockall}) {
		3221	eval {
		3222	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3223	and die "WARNING: m(un)lockall failed: $!\n";
		3224	};
		3225	warn $@ if $@;
		3226	}
1069	}	3227	}
1070		3228
1071	sub main {	3229	sub main {
1072	cfg_load;	3230	# we must not ever block the main coroutine
1073	db_load;	3231	local $Coro::idle = sub {
		3232	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3233	(async {
		3234	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3235	Event::one_event;
		3236	})->prio (Coro::PRIO_MAX);
		3237	};
		3238
		3239	reload_config;
		3240	db_init;
1074	load_extensions;	3241	load_extensions;
		3242
		3243	$TICK_WATCHER->start;
1075	Event::loop;	3244	Event::loop;
1076	}	3245	}
1077		3246
1078	#############################################################################	3247	#############################################################################
1079	# initialisation	3248	# initialisation and cleanup
1080		3249
1081	sub _perl_reload(&) {	3250	# install some emergency cleanup handlers
		3251	BEGIN {
		3252	for my $signal (qw(INT HUP TERM)) {
		3253	Event->signal (
		3254	reentrant => 0,
		3255	data => WF_AUTOCANCEL,
		3256	signal => $signal,
		3257	prio => 0,
		3258	cb => sub {
		3259	cf::cleanup "SIG$signal";
		3260	},
		3261	);
		3262	}
		3263	}
		3264
		3265	sub write_runtime {
		3266	my $runtime = "$LOCALDIR/runtime";
		3267
		3268	# first touch the runtime file to show we are still running:
		3269	# the fsync below can take a very very long time.
		3270
		3271	IO::AIO::aio_utime $runtime, undef, undef;
		3272
		3273	my $guard = cf::lock_acquire "write_runtime";
		3274
		3275	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3276	or return;
		3277
		3278	my $value = $cf::RUNTIME + 90 + 10;
		3279	# 10 is the runtime save interval, for a monotonic clock
		3280	# 60 allows for the watchdog to kill the server.
		3281
		3282	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3283	and return;
		3284
		3285	# always fsync - this file is important
		3286	aio_fsync $fh
		3287	and return;
		3288
		3289	# touch it again to show we are up-to-date
		3290	aio_utime $fh, undef, undef;
		3291
		3292	close $fh
		3293	or return;
		3294
		3295	aio_rename "$runtime~", $runtime
		3296	and return;
		3297
		3298	warn "runtime file written.\n";
		3299
		3300	1
		3301	}
		3302
		3303	sub emergency_save() {
		3304	my $freeze_guard = cf::freeze_mainloop;
		3305
		3306	warn "enter emergency perl save\n";
		3307
		3308	cf::sync_job {
		3309	# use a peculiar iteration method to avoid tripping on perl
		3310	# refcount bugs in for. also avoids problems with players
		3311	# and maps saved/destroyed asynchronously.
		3312	warn "begin emergency player save\n";
		3313	for my $login (keys %cf::PLAYER) {
		3314	my $pl = $cf::PLAYER{$login} or next;
		3315	$pl->valid or next;
		3316	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3317	$pl->save;
		3318	}
		3319	warn "end emergency player save\n";
		3320
		3321	warn "begin emergency map save\n";
		3322	for my $path (keys %cf::MAP) {
		3323	my $map = $cf::MAP{$path} or next;
		3324	$map->valid or next;
		3325	$map->save;
		3326	}
		3327	warn "end emergency map save\n";
		3328
		3329	warn "begin emergency database checkpoint\n";
		3330	BDB::db_env_txn_checkpoint $DB_ENV;
		3331	warn "end emergency database checkpoint\n";
		3332	};
		3333
		3334	warn "leave emergency perl save\n";
		3335	}
		3336
		3337	sub post_cleanup {
1082	my ($msg) = @_;	3338	my ($make_core) = @_;
1083		3339
1084	$msg->("reloading...");	3340	warn Carp::longmess "post_cleanup backtrace"
		3341	if $make_core;
		3342	}
1085		3343
1086	eval {	3344	sub do_reload_perl() {
1087	# cancel all watchers	3345	# can/must only be called in main
		3346	if ($Coro::current != $Coro::main) {
		3347	warn "can only reload from main coroutine";
		3348	return;
		3349	}
		3350
		3351	warn "reloading...";
		3352
		3353	warn "entering sync_job";
		3354
		3355	cf::sync_job {
		3356	cf::write_runtime; # external watchdog should not bark
		3357	cf::emergency_save;
		3358	cf::write_runtime; # external watchdog should not bark
		3359
		3360	warn "syncing database to disk";
		3361	BDB::db_env_txn_checkpoint $DB_ENV;
		3362
		3363	# if anything goes wrong in here, we should simply crash as we already saved
		3364
		3365	warn "cancelling all WF_AUTOCANCEL watchers";
1088	for (Event::all_watchers) {	3366	for (Event::all_watchers) {
1089	$_->cancel if $_->data & WF_AUTOCANCEL;	3367	$_->cancel if $_->data & WF_AUTOCANCEL;
1090	}	3368	}
1091		3369
1092	# unload all extensions	3370	warn "flushing outstanding aio requests";
1093	for (@exts) {	3371	for (;;) {
1094	$msg->("unloading <$_>");	3372	BDB::flush;
1095	unload_extension $_;	3373	IO::AIO::flush;
		3374	Coro::cede;
		3375	last unless IO::AIO::nreqs || BDB::nreqs;
		3376	warn "iterate...";
		3377	}
		3378
		3379	++$RELOAD;
		3380
		3381	warn "cancelling all extension coros";
		3382	$_->cancel for values %EXT_CORO;
		3383	%EXT_CORO = ();
		3384
		3385	warn "removing commands";
		3386	%COMMAND = ();
		3387
		3388	warn "removing ext/exti commands";
		3389	%EXTCMD = ();
		3390	%EXTICMD = ();
		3391
		3392	warn "unloading/nuking all extensions";
		3393	for my $pkg (@EXTS) {
		3394	warn "... unloading $pkg";
		3395
		3396	if (my $cb = $pkg->can ("unload")) {
		3397	eval {
		3398	$cb->($pkg);
		3399	1
		3400	} or warn "$pkg unloaded, but with errors: $@";
1096	}	3401	}
1097		3402
		3403	warn "... nuking $pkg";
		3404	Symbol::delete_package $pkg;
		3405	}
		3406
1098	# unload all modules loaded from $LIBDIR	3407	warn "unloading all perl modules loaded from $LIBDIR";
1099	while (my ($k, $v) = each %INC) {	3408	while (my ($k, $v) = each %INC) {
1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3409	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1101		3410
1102	$msg->("removing <$k>");	3411	warn "... unloading $k";
1103	delete $INC{$k};	3412	delete $INC{$k};
1104		3413
1105	$k =~ s/\.pm$//;	3414	$k =~ s/\.pm$//;
1106	$k =~ s/\//::/g;	3415	$k =~ s/\//::/g;
1107		3416
…		…
1110	}	3419	}
1111		3420
1112	Symbol::delete_package $k;	3421	Symbol::delete_package $k;
1113	}	3422	}
1114		3423
1115	# sync database to disk
1116	cf::db_sync;
1117
1118	# get rid of safe::, as good as possible	3424	warn "getting rid of safe::, as good as possible";
1119	Symbol::delete_package "safe::$_"	3425	Symbol::delete_package "safe::$_"
1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3426	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1121		3427
1122	# remove register_script_function callbacks
1123	# TODO
1124
1125	# unload cf.pm "a bit"	3428	warn "unloading cf.pm \"a bit\"";
1126	delete $INC{"cf.pm"};	3429	delete $INC{"cf.pm"};
		3430	delete $INC{"cf/pod.pm"};
1127		3431
1128	# don't, removes xs symbols, too,	3432	# don't, removes xs symbols, too,
1129	# and global variables created in xs	3433	# and global variables created in xs
1130	#Symbol::delete_package __PACKAGE__;	3434	#Symbol::delete_package __PACKAGE__;
1131		3435
1132	# reload cf.pm	3436	warn "unload completed, starting to reload now";
		3437
1133	$msg->("reloading cf.pm");	3438	warn "reloading cf.pm";
1134	require cf;	3439	require cf;
		3440	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1135		3441
1136	# load config and database again	3442	warn "loading config and database again";
1137	cf::cfg_load;	3443	cf::reload_config;
1138	cf::db_load;
1139		3444
1140	# load extensions	3445	warn "loading extensions";
1141	$msg->("load extensions");
1142	cf::load_extensions;	3446	cf::load_extensions;
1143		3447
1144	# reattach attachments to objects	3448	warn "reattaching attachments to objects/players";
1145	$msg->("reattach");	3449	_global_reattach; # objects, sockets
1146	_global_reattach;	3450	warn "reattaching attachments to maps";
		3451	reattach $_ for values %MAP;
		3452	warn "reattaching attachments to players";
		3453	reattach $_ for values %PLAYER;
		3454
		3455	warn "leaving sync_job";
		3456
		3457	1
		3458	} or do {
		3459	warn $@;
		3460	warn "error while reloading, exiting.";
		3461	exit 1;
1147	};	3462	};
1148	$msg->($@) if $@;
1149		3463
1150	$msg->("reloaded");	3464	warn "reloaded";
1151	};	3465	};
1152		3466
1153	sub perl_reload() {	3467	our $RELOAD_WATCHER; # used only during reload
1154	_perl_reload {	3468
1155	warn $_[0];	3469	sub reload_perl() {
1156	print "$_[0]\n";	3470	# doing reload synchronously and two reloads happen back-to-back,
		3471	# coro crashes during coro_state_free->destroy here.
		3472
		3473	$RELOAD_WATCHER ||= Event->timer (
		3474	reentrant => 0,
		3475	after => 0,
		3476	data => WF_AUTOCANCEL,
		3477	cb => sub {
		3478	do_reload_perl;
		3479	undef $RELOAD_WATCHER;
		3480	},
1157	};	3481	);
1158	}	3482	}
1159		3483
1160	register "<global>", __PACKAGE__;
1161
1162	register_command "perl-reload" => sub {	3484	register_command "reload" => sub {
1163	my ($who, $arg) = @_;	3485	my ($who, $arg) = @_;
1164		3486
1165	if ($who->flag (FLAG_WIZ)) {	3487	if ($who->flag (FLAG_WIZ)) {
1166	_perl_reload {	3488	$who->message ("reloading server.");
1167	warn $_[0];	3489	async {
1168	$who->message ($_[0]);	3490	$Coro::current->{desc} = "perl_reload";
		3491	reload_perl;
1169	};	3492	};
1170	}	3493	}
1171	};	3494	};
1172		3495
1173	unshift @INC, $LIBDIR;	3496	unshift @INC, $LIBDIR;
1174		3497
		3498	my $bug_warning = 0;
		3499
		3500	our @WAIT_FOR_TICK;
		3501	our @WAIT_FOR_TICK_BEGIN;
		3502
		3503	sub wait_for_tick {
		3504	return unless $TICK_WATCHER->is_active;
		3505	return if $Coro::current == $Coro::main;
		3506
		3507	my $signal = new Coro::Signal;
		3508	push @WAIT_FOR_TICK, $signal;
		3509	$signal->wait;
		3510	}
		3511
		3512	sub wait_for_tick_begin {
		3513	return unless $TICK_WATCHER->is_active;
		3514	return if $Coro::current == $Coro::main;
		3515
		3516	my $signal = new Coro::Signal;
		3517	push @WAIT_FOR_TICK_BEGIN, $signal;
		3518	$signal->wait;
		3519	}
		3520
1175	$TICK_WATCHER = Event->timer (	3521	$TICK_WATCHER = Event->timer (
		3522	reentrant => 0,
		3523	parked => 1,
1176	prio => 1,	3524	prio => 0,
1177	async => 1,
1178	at => $NEXT_TICK || 1,	3525	at => $NEXT_TICK || $TICK,
1179	data => WF_AUTOCANCEL,	3526	data => WF_AUTOCANCEL,
1180	cb => sub {	3527	cb => sub {
		3528	if ($Coro::current != $Coro::main) {
		3529	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3530	unless ++$bug_warning > 10;
		3531	return;
		3532	}
		3533
		3534	$NOW = $tick_start = Event::time;
		3535
1181	cf::server_tick; # one server iteration	3536	cf::server_tick; # one server iteration
1182		3537
1183	my $NOW = Event::time;	3538	$RUNTIME += $TICK;
1184	$NEXT_TICK += $TICK;	3539	$NEXT_TICK += $TICK;
		3540
		3541	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3542	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3543	Coro::async_pool {
		3544	$Coro::current->{desc} = "runtime saver";
		3545	write_runtime
		3546	or warn "ERROR: unable to write runtime file: $!";
		3547	};
		3548	}
		3549
		3550	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3551	$sig->send;
		3552	}
		3553	while (my $sig = shift @WAIT_FOR_TICK) {
		3554	$sig->send;
		3555	}
		3556
		3557	$NOW = Event::time;
1185		3558
1186	# if we are delayed by four ticks or more, skip them all	3559	# if we are delayed by four ticks or more, skip them all
1187	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3560	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1188		3561
1189	$TICK_WATCHER->at ($NEXT_TICK);	3562	$TICK_WATCHER->at ($NEXT_TICK);
1190	$TICK_WATCHER->start;	3563	$TICK_WATCHER->start;
		3564
		3565	$LOAD = ($NOW - $tick_start) / $TICK;
		3566	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3567
		3568	_post_tick;
1191	},	3569	},
1192	);	3570	);
1193		3571
		3572	{
		3573	BDB::min_parallel 8;
		3574	BDB::max_poll_time $TICK * 0.1;
		3575	$BDB_POLL_WATCHER = Event->io (
		3576	reentrant => 0,
		3577	fd => BDB::poll_fileno,
		3578	poll => 'r',
		3579	prio => 0,
		3580	data => WF_AUTOCANCEL,
		3581	cb => \&BDB::poll_cb,
		3582	);
		3583
		3584	BDB::set_sync_prepare {
		3585	my $status;
		3586	my $current = $Coro::current;
		3587	(
		3588	sub {
		3589	$status = $!;
		3590	$current->ready; undef $current;
		3591	},
		3592	sub {
		3593	Coro::schedule while defined $current;
		3594	$! = $status;
		3595	},
		3596	)
		3597	};
		3598
		3599	unless ($DB_ENV) {
		3600	$DB_ENV = BDB::db_env_create;
		3601	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC
		3602	| BDB::LOG_AUTOREMOVE, 1);
		3603	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3604	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		3605
		3606	cf::sync_job {
		3607	eval {
		3608	BDB::db_env_open
		3609	$DB_ENV,
		3610	$BDBDIR,
		3611	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3612	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3613	0666;
		3614
		3615	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3616	};
		3617
		3618	cf::cleanup "db_env_open(db): $@" if $@;
		3619	};
		3620	}
		3621
		3622	$BDB_DEADLOCK_WATCHER = Event->timer (
		3623	after => 3,
		3624	interval => 1,
		3625	hard => 1,
		3626	prio => 0,
		3627	data => WF_AUTOCANCEL,
		3628	cb => sub {
		3629	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		3630	},
		3631	);
		3632	$BDB_CHECKPOINT_WATCHER = Event->timer (
		3633	after => 11,
		3634	interval => 60,
		3635	hard => 1,
		3636	prio => 0,
		3637	data => WF_AUTOCANCEL,
		3638	cb => sub {
		3639	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3640	},
		3641	);
		3642	$BDB_TRICKLE_WATCHER = Event->timer (
		3643	after => 5,
		3644	interval => 10,
		3645	hard => 1,
		3646	prio => 0,
		3647	data => WF_AUTOCANCEL,
		3648	cb => sub {
		3649	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3650	},
		3651	);
		3652	}
		3653
		3654	{
		3655	IO::AIO::min_parallel 8;
		3656
		3657	undef $Coro::AIO::WATCHER;
1194	IO::AIO::max_poll_time $TICK * 0.2;	3658	IO::AIO::max_poll_time $TICK * 0.1;
1195		3659	$AIO_POLL_WATCHER = Event->io (
1196	Event->io (fd => IO::AIO::poll_fileno,	3660	reentrant => 0,
1197	poll => 'r',
1198	prio => 5,
1199	data => WF_AUTOCANCEL,	3661	data => WF_AUTOCANCEL,
		3662	fd => IO::AIO::poll_fileno,
		3663	poll => 'r',
		3664	prio => 0,
1200	cb => \&IO::AIO::poll_cb);	3665	cb => \&IO::AIO::poll_cb,
		3666	);
		3667	}
		3668
		3669	my $_log_backtrace;
		3670
		3671	sub _log_backtrace {
		3672	my ($msg, @addr) = @_;
		3673
		3674	$msg =~ s/\n//;
		3675
		3676	# limit the # of concurrent backtraces
		3677	if ($_log_backtrace < 2) {
		3678	++$_log_backtrace;
		3679	async {
		3680	$Coro::current->{desc} = "abt $msg";
		3681
		3682	my @bt = fork_call {
		3683	@addr = map { sprintf "%x", $_ } @addr;
		3684	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3685	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3686	or die "addr2line: $!";
		3687
		3688	my @funcs;
		3689	my @res = <$fh>;
		3690	chomp for @res;
		3691	while (@res) {
		3692	my ($func, $line) = splice @res, 0, 2, ();
		3693	push @funcs, "[$func] $line";
		3694	}
		3695
		3696	@funcs
		3697	};
		3698
		3699	LOG llevInfo, "[ABT] $msg\n";
		3700	LOG llevInfo, "[ABT] $_\n" for @bt;
		3701	--$_log_backtrace;
		3702	};
		3703	} else {
		3704	LOG llevInfo, "[ABT] $msg\n";
		3705	LOG llevInfo, "[ABT] [suppressed]\n";
		3706	}
		3707	}
		3708
		3709	# load additional modules
		3710	use cf::pod;
		3711
		3712	END { cf::emergency_save }
1201		3713
1202	1	3714	1
1203		3715

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