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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.74 by root, Sun Oct 1 15:59:29 2006 UTC vs.
Revision 1.367 by root, Wed Sep 12 11:10:11 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;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
		15	use Coro 3.64 ();
		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;
10	use YAML::Syck ();	31	use YAML::Syck ();
		32	use IO::AIO 2.32 ();
11	use Time::HiRes;	33	use Time::HiRes;
12	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
13	$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
14		44
15	# 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?
16	$YAML::Syck::ImplicitUnicode = 1;	46	$YAML::Syck::ImplicitUnicode = 1;
17		47
18	use strict;	48	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		49
20	_init_vars;	50	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		51
22	our %COMMAND = ();	52	our %COMMAND = ();
		53	our %COMMAND_TIME = ();
		54
		55	our @EXTS = (); # list of extension package names
		56	our %EXTCMD = ();
		57	our %EXTICMD = ();
		58	our %EXT_CORO = (); # coroutines bound to extensions
		59	our %EXT_MAP = (); # pluggable maps
		60
		61	our $RELOAD; # number of reloads so far
23	our @EVENT;	62	our @EVENT;
24	our $LIBDIR = maps_directory "perl";
25		63
26	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(!)
27	our $TICK_WATCHER;	77	our $TICK_WATCHER;
		78	our $AIO_POLL_WATCHER;
		79	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	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_CHECKPOINT_WATCHER;
		86	our $BDB_TRICKLE_WATCHER;
		87	our $DB_ENV;
29		88
30	our %CFG;	89	our %CFG;
31		90
		91	our $UPTIME; $UPTIME ||= time;
		92	our $RUNTIME;
		93
		94	our (%PLAYER, %PLAYER_LOADING); # all users
		95	our (%MAP, %MAP_LOADING ); # all maps
		96	our $LINK_MAP; # the special {link} map, which is always available
		97
		98	# used to convert map paths into valid unix filenames by replacing / by ∕
		99	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		100
		101	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		102	our $LOADAVG; # same thing, but with alpha-smoothing
		103	our $tick_start; # for load detecting purposes
		104
		105	binmode STDOUT;
		106	binmode STDERR;
		107
		108	# read virtual server time, if available
		109	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		110	open my $fh, "<", "$LOCALDIR/runtime"
		111	or die "unable to read runtime file: $!";
		112	$RUNTIME = <$fh> + 0.;
		113	}
		114
		115	mkdir $_
		116	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		117
		118	our $EMERGENCY_POSITION;
		119
		120	sub cf::map::normalise;
		121
32	#############################################################################	122	#############################################################################
33		123
34	=head2 GLOBAL VARIABLES	124	=head2 GLOBAL VARIABLES
35		125
36	=over 4	126	=over 4
37		127
38	=item $cf::LIBDIR	128	=item $cf::UPTIME
39		129
40	The perl library directory, where extensions and cf-specific modules can	130	The timestamp of the server start (so not actually an uptime).
41	be found. It will be added to C<@INC> automatically.	131
		132	=item $cf::RUNTIME
		133
		134	The time this server has run, starts at 0 and is increased by $cf::TICK on
		135	every server tick.
		136
		137	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		138	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		139	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		140
		141	Various directories - "/etc", read-only install directory, perl-library
		142	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		143	unique-items directory, player file directory, random maps directory and
		144	database environment.
		145
		146	=item $cf::NOW
		147
		148	The time of the last (current) server tick.
42		149
43	=item $cf::TICK	150	=item $cf::TICK
44		151
45	The interval between server ticks, in seconds.	152	The interval between server ticks, in seconds.
		153
		154	=item $cf::LOADAVG
		155
		156	The current CPU load on the server (alpha-smoothed), as a value between 0
		157	(none) and 1 (overloaded), indicating how much time is spent on processing
		158	objects per tick. Healthy values are < 0.5.
		159
		160	=item $cf::LOAD
		161
		162	The raw value load value from the last tick.
46		163
47	=item %cf::CFG	164	=item %cf::CFG
48		165
49	Configuration for the server, loaded from C</etc/crossfire/config>, or	166	Configuration for the server, loaded from C</etc/crossfire/config>, or
50	from wherever your confdir points to.	167	from wherever your confdir points to.
		168
		169	=item cf::wait_for_tick, cf::wait_for_tick_begin
		170
		171	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		172	returns directly I<after> the tick processing (and consequently, can only wake one process
		173	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		174
		175	=item @cf::INVOKE_RESULTS
		176
		177	This array contains the results of the last C<invoke ()> call. When
		178	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		179	that call.
51		180
52	=back	181	=back
53		182
54	=cut	183	=cut
55		184
56	BEGIN {	185	BEGIN {
57	*CORE::GLOBAL::warn = sub {	186	*CORE::GLOBAL::warn = sub {
58	my $msg = join "", @_;	187	my $msg = join "", @_;
		188
59	$msg .= "\n"	189	$msg .= "\n"
60	unless $msg =~ /\n$/;	190	unless $msg =~ /\n$/;
61		191
62	print STDERR "cfperl: $msg";	192	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		193
63	LOG llevError, "cfperl: $msg";	194	LOG llevError, $msg;
64	};	195	};
65	}	196	}
66		197
		198	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		199	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		200	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		201	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		202	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		203	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
67	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	204	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
68		205
69	# we bless all objects into (empty) derived classes to force a method lookup	206	# we bless all objects into (empty) derived classes to force a method lookup
70	# within the Safe compartment.	207	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	208	for my $pkg (qw(
		209	cf::global cf::attachable
		210	cf::object cf::object::player
		211	cf::client cf::player
		212	cf::arch cf::living
		213	cf::map cf::party cf::region
		214	)) {
72	no strict 'refs';	215	no strict 'refs';
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	216	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	217	}
75		218
76	$Event::DIED = sub {	219	$Event::DIED = sub {
77	warn "error in event callback: @_";	220	warn "error in event callback: @_";
78	};	221	};
79		222
80	my %ext_pkg;	223	#############################################################################
81	my @exts;
82	my @hook;
83	my %command;
84	my %extcmd;
85		224
86	=head2 UTILITY FUNCTIONS	225	=head2 UTILITY FUNCTIONS
87		226
88	=over 4	227	=over 4
89		228
90	=cut	229	=item dumpval $ref
91		230
92	use JSON::Syck (); # TODO# replace by JSON::PC once working	231	=cut
		232
		233	sub dumpval {
		234	eval {
		235	local $SIG{__DIE__};
		236	my $d;
		237	if (1) {
		238	$d = new Data::Dumper([$_[0]], ["*var"]);
		239	$d->Terse(1);
		240	$d->Indent(2);
		241	$d->Quotekeys(0);
		242	$d->Useqq(1);
		243	#$d->Bless(...);
		244	$d->Seen($_[1]) if @_ > 1;
		245	$d = $d->Dump();
		246	}
		247	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		248	$d
		249	} || "[unable to dump $_[0]: '$@']";
		250	}
93		251
94	=item $ref = cf::from_json $json	252	=item $ref = cf::from_json $json
95		253
96	Converts a JSON string into the corresponding perl data structure.	254	Converts a JSON string into the corresponding perl data structure.
97		255
98	=cut
99
100	sub from_json($) {
101	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
102	JSON::Syck::Load $_[0]
103	}
104
105	=item $json = cf::to_json $ref	256	=item $json = cf::to_json $ref
106		257
107	Converts a perl data structure into its JSON representation.	258	Converts a perl data structure into its JSON representation.
108		259
109	=cut	260	=cut
110		261
111	sub to_json($) {	262	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	263
113	JSON::Syck::Dump $_[0]	264	sub to_json ($) { $json_coder->encode ($_[0]) }
		265	sub from_json ($) { $json_coder->decode ($_[0]) }
		266
		267	=item cf::lock_wait $string
		268
		269	Wait until the given lock is available. See cf::lock_acquire.
		270
		271	=item my $lock = cf::lock_acquire $string
		272
		273	Wait until the given lock is available and then acquires it and returns
		274	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		275	for example when the coroutine gets canceled), the lock is automatically
		276	returned.
		277
		278	Locks are *not* recursive, locking from the same coro twice results in a
		279	deadlocked coro.
		280
		281	Lock names should begin with a unique identifier (for example, cf::map::find
		282	uses map_find and cf::map::load uses map_load).
		283
		284	=item $locked = cf::lock_active $string
		285
		286	Return true if the lock is currently active, i.e. somebody has locked it.
		287
		288	=cut
		289
		290	our %LOCK;
		291	our %LOCKER;#d#
		292
		293	sub lock_wait($) {
		294	my ($key) = @_;
		295
		296	if ($LOCKER{$key} == $Coro::current) {#d#
		297	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		298	return;#d#
		299	}#d#
		300
		301	# wait for lock, if any
		302	while ($LOCK{$key}) {
		303	push @{ $LOCK{$key} }, $Coro::current;
		304	Coro::schedule;
		305	}
		306	}
		307
		308	sub lock_acquire($) {
		309	my ($key) = @_;
		310
		311	# wait, to be sure we are not locked
		312	lock_wait $key;
		313
		314	$LOCK{$key} = [];
		315	$LOCKER{$key} = $Coro::current;#d#
		316
		317	Coro::guard {
		318	delete $LOCKER{$key};#d#
		319	# wake up all waiters, to be on the safe side
		320	$_->ready for @{ delete $LOCK{$key} };
		321	}
		322	}
		323
		324	sub lock_active($) {
		325	my ($key) = @_;
		326
		327	! ! $LOCK{$key}
		328	}
		329
		330	sub freeze_mainloop {
		331	return unless $TICK_WATCHER->is_active;
		332
		333	my $guard = Coro::guard {
		334	$TICK_WATCHER->start;
		335	};
		336	$TICK_WATCHER->stop;
		337	$guard
		338	}
		339
		340	=item cf::get_slot $time[, $priority[, $name]]
		341
		342	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		343	This call blocks and returns only when you have at least C<$time> seconds
		344	of cpu time till the next tick. The slot is only valid till the next cede.
		345
		346	The optional C<$name> can be used to identify the job to run. It might be
		347	used for statistical purposes and should identify the same time-class.
		348
		349	Useful for short background jobs.
		350
		351	=cut
		352
		353	our @SLOT_QUEUE;
		354	our $SLOT_QUEUE;
		355
		356	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		357	$SLOT_QUEUE = Coro::async {
		358	my $signal = new Coro::Signal;
		359
		360	while () {
		361	next_job:
		362	my $avail = cf::till_tick;
		363	if ($avail > 0.01) {
		364	for (0 .. $#SLOT_QUEUE) {
		365	if ($SLOT_QUEUE[$_][0] < $avail) {
		366	my $job = splice @SLOT_QUEUE, $_, 1, ();
		367	$job->[2]->send;
		368	Coro::cede;
		369	goto next_job;
		370	}
		371	}
		372	}
		373
		374	if (@SLOT_QUEUE) {
		375	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		376	push @cf::WAIT_FOR_TICK, $signal;
		377	$signal->wait;
		378	} else {
		379	Coro::schedule;
		380	}
		381	}
		382	};
		383
		384	sub get_slot($;$$) {
		385	my ($time, $pri, $name) = @_;
		386
		387	$time = $TICK * .6 if $time > $TICK * .6;
		388	my $sig = new Coro::Signal;
		389
		390	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		391	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		392	$SLOT_QUEUE->ready;
		393	$sig->wait;
		394	}
		395
		396	=item cf::async { BLOCK }
		397
		398	Currently the same as Coro::async_pool, meaning you cannot use
		399	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		400	thing you are allowed to do is call C<prio> on it.
		401
		402	=cut
		403
		404	BEGIN { *async = \&Coro::async_pool }
		405
		406	=item cf::sync_job { BLOCK }
		407
		408	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		409	is always able to handle events or runnable, as Crossfire TRT is only
		410	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		411	acceptable.
		412
		413	If it must be done, put the blocking parts into C<sync_job>. This will run
		414	the given BLOCK in another coroutine while waiting for the result. The
		415	server will be frozen during this time, so the block should either finish
		416	fast or be very important.
		417
		418	=cut
		419
		420	sub sync_job(&) {
		421	my ($job) = @_;
		422
		423	if ($Coro::current == $Coro::main) {
		424	my $time = Event::time;
		425
		426	# this is the main coro, too bad, we have to block
		427	# till the operation succeeds, freezing the server :/
		428
		429	# TODO: use suspend/resume instead
		430	# (but this is cancel-safe)
		431	my $freeze_guard = freeze_mainloop;
		432
		433	my $busy = 1;
		434	my @res;
		435
		436	(async {
		437	@res = eval { $job->() };
		438	warn $@ if $@;
		439	undef $busy;
		440	})->prio (Coro::PRIO_MAX);
		441
		442	while ($busy) {
		443	Coro::cede or Event::one_event;
		444	}
		445
		446	$time = Event::time - $time;
		447
		448	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		449	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		450
		451	$tick_start += $time; # do not account sync jobs to server load
		452
		453	wantarray ? @res : $res[0]
		454	} else {
		455	# we are in another coroutine, how wonderful, everything just works
		456
		457	$job->()
		458	}
		459	}
		460
		461	=item $coro = cf::async_ext { BLOCK }
		462
		463	Like async, but this coro is automatically being canceled when the
		464	extension calling this is being unloaded.
		465
		466	=cut
		467
		468	sub async_ext(&) {
		469	my $cb = shift;
		470
		471	my $coro = &Coro::async ($cb);
		472
		473	$coro->on_destroy (sub {
		474	delete $EXT_CORO{$coro+0};
		475	});
		476	$EXT_CORO{$coro+0} = $coro;
		477
		478	$coro
		479	}
		480
		481	=item fork_call { }, $args
		482
		483	Executes the given code block with the given arguments in a seperate
		484	process, returning the results. Everything must be serialisable with
		485	Coro::Storable. May, of course, block. Note that the executed sub may
		486	never block itself or use any form of Event handling.
		487
		488	=cut
		489
		490	sub fork_call(&@) {
		491	my ($cb, @args) = @_;
		492
		493	# we seemingly have to make a local copy of the whole thing,
		494	# otherwise perl prematurely frees the stuff :/
		495	# TODO: investigate and fix (likely this will be rather laborious)
		496
		497	my @res = Coro::Util::fork_eval {
		498	reset_signals;
		499	&$cb
		500	}, @args;
		501
		502	wantarray ? @res : $res[-1]
		503	}
		504
		505	=item $value = cf::db_get $family => $key
		506
		507	Returns a single value from the environment database.
		508
		509	=item cf::db_put $family => $key => $value
		510
		511	Stores the given C<$value> in the family. It can currently store binary
		512	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		513
		514	=item $db = cf::db_table "name"
		515
		516	Create and/or open a new database table. The string must not be "db" and must be unique
		517	within each server.
		518
		519	=cut
		520
		521	sub db_table($) {
		522	my ($name) = @_;
		523	my $db = BDB::db_create $DB_ENV;
		524
		525	eval {
		526	$db->set_flags (BDB::CHKSUM);
		527
		528	utf8::encode $name;
		529	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		530	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		531	cf::cleanup "db_open(db): $!" if $!;
		532	};
		533	cf::cleanup "db_open(db): $@" if $@;
		534
		535	$db
		536	}
		537
		538	our $DB;
		539
		540	sub db_init {
		541	cf::sync_job {
		542	$DB ||= db_table "db";
		543	};
		544	}
		545
		546	sub db_get($$) {
		547	my $key = "$_[0]/$_[1]";
		548
		549	cf::sync_job {
		550	BDB::db_get $DB, undef, $key, my $data;
		551
		552	$! ? ()
		553	: $data
		554	}
		555	}
		556
		557	sub db_put($$$) {
		558	BDB::dbreq_pri 4;
		559	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		560	}
		561
		562	=item cf::cache $id => [$paths...], $processversion => $process
		563
		564	Generic caching function that returns the value of the resource $id,
		565	caching and regenerating as required.
		566
		567	This function can block.
		568
		569	=cut
		570
		571	sub cache {
		572	my ($id, $src, $processversion, $process) = @_;
		573
		574	my $meta =
		575	join "\x00",
		576	$processversion,
		577	map {
		578	aio_stat $_
		579	and Carp::croak "$_: $!";
		580
		581	($_, (stat _)[7,9])
		582	} @$src;
		583
		584	my $dbmeta = db_get cache => "$id/meta";
		585	if ($dbmeta ne $meta) {
		586	# changed, we may need to process
		587
		588	my @data;
		589	my $md5;
		590
		591	for (0 .. $#$src) {
		592	0 <= aio_load $src->[$_], $data[$_]
		593	or Carp::croak "$src->[$_]: $!";
		594	}
		595
		596	# if processing is expensive, check
		597	# checksum first
		598	if (1) {
		599	$md5 =
		600	join "\x00",
		601	$processversion,
		602	map {
		603	cf::cede_to_tick;
		604	($src->[$_], Digest::MD5::md5_hex $data[$_])
		605	} 0.. $#$src;
		606
		607
		608	my $dbmd5 = db_get cache => "$id/md5";
		609	if ($dbmd5 eq $md5) {
		610	db_put cache => "$id/meta", $meta;
		611
		612	return db_get cache => "$id/data";
		613	}
		614	}
		615
		616	my $t1 = Time::HiRes::time;
		617	my $data = $process->(\@data);
		618	my $t2 = Time::HiRes::time;
		619
		620	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		621
		622	db_put cache => "$id/data", $data;
		623	db_put cache => "$id/md5" , $md5;
		624	db_put cache => "$id/meta", $meta;
		625
		626	return $data;
		627	}
		628
		629	db_get cache => "$id/data"
		630	}
		631
		632	=item cf::datalog type => key => value, ...
		633
		634	Log a datalog packet of the given type with the given key-value pairs.
		635
		636	=cut
		637
		638	sub datalog($@) {
		639	my ($type, %kv) = @_;
		640	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
114	}	641	}
115		642
116	=back	643	=back
117		644
118	=cut	645	=cut
119		646
120	#############################################################################	647	#############################################################################
121		648
122	=head2 EVENTS AND OBJECT ATTACHMENTS	649	=head2 ATTACHABLE OBJECTS
		650
		651	Many objects in crossfire are so-called attachable objects. That means you can
		652	attach callbacks/event handlers (a collection of which is called an "attachment")
		653	to it. All such attachable objects support the following methods.
		654
		655	In the following description, CLASS can be any of C<global>, C<object>
		656	C<player>, C<client> or C<map> (i.e. the attachable objects in
		657	Crossfire TRT).
123		658
124	=over 4	659	=over 4
125		660
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	661	=item $attachable->attach ($attachment, key => $value...)
139		662
140	=item $map->detach ($attachment)	663	=item $attachable->detach ($attachment)
141		664
142	Attach/detach a pre-registered attachment to a map.	665	Attach/detach a pre-registered attachment to a specific object and give it
		666	the specified key/value pairs as arguments.
143		667
144	=item $bool = $object->attached ($name)	668	Example, attach a minesweeper attachment to the given object, making it a
		669	10x10 minesweeper game:
145		670
146	=item $bool = $player->attached ($name)	671	$obj->attach (minesweeper => width => 10, height => 10);
147		672
148	=item $bool = $map->attached ($name)	673	=item $bool = $attachable->attached ($name)
149		674
150	Checks wether the named attachment is currently attached to the object.	675	Checks wether the named attachment is currently attached to the object.
151		676
152	=item cf::attach_global ...	677	=item cf::CLASS->attach ...
153		678
154	Attach handlers for global events.	679	=item cf::CLASS->detach ...
155		680
156	This and all following C<attach_*>-functions expect any number of the	681	Define an anonymous attachment and attach it to all objects of the given
157	following handler/hook descriptions:	682	CLASS. See the next function for an explanation of its arguments.
		683
		684	You can attach to global events by using the C<cf::global> class.
		685
		686	Example, log all player logins:
		687
		688	cf::player->attach (
		689	on_login => sub {
		690	my ($pl) = @_;
		691	...
		692	},
		693	);
		694
		695	Example, attach to the jeweler skill:
		696
		697	cf::object->attach (
		698	type => cf::SKILL,
		699	subtype => cf::SK_JEWELER,
		700	on_use_skill => sub {
		701	my ($sk, $ob, $part, $dir, $msg) = @_;
		702	...
		703	},
		704	);
		705
		706	=item cf::CLASS::attachment $name, ...
		707
		708	Register an attachment by C<$name> through which attachable objects of the
		709	given CLASS can refer to this attachment.
		710
		711	Some classes such as crossfire maps and objects can specify attachments
		712	that are attached at load/instantiate time, thus the need for a name.
		713
		714	These calls expect any number of the following handler/hook descriptions:
158		715
159	=over 4	716	=over 4
160		717
161	=item prio => $number	718	=item prio => $number
162		719
…		…
164	by another C<prio> setting). Lower priority handlers get executed	721	by another C<prio> setting). Lower priority handlers get executed
165	earlier. The default priority is C<0>, and many built-in handlers are	722	earlier. The default priority is C<0>, and many built-in handlers are
166	registered at priority C<-1000>, so lower priorities should not be used	723	registered at priority C<-1000>, so lower priorities should not be used
167	unless you know what you are doing.	724	unless you know what you are doing.
168		725
		726	=item type => $type
		727
		728	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		729	given type of objects only (the additional parameter C<subtype> can be
		730	used to further limit to the given subtype).
		731
169	=item on_I<event> => \&cb	732	=item on_I<event> => \&cb
170		733
171	Call the given code reference whenever the named event happens (event is	734	Call the given code reference whenever the named event happens (event is
172	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	735	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
173	handlers are recognised generally depends on the type of object these	736	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	745	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	746	object/class are recognised.
184		747
185	=back	748	=back
186		749
187	=item cf::attach_to_type $object_type, $subtype, ...	750	Example, define an attachment called "sockpuppet" that calls the given
		751	event handler when a monster attacks:
188		752
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	753	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	754	on_skill_attack => sub {
191	type.	755	my ($self, $victim) = @_;
192		756	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	757	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	758	}
414	}
415		759
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	760	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		761
442	Just because you have a perl object does not mean that the corresponding	762	Just because you have a perl object does not mean that the corresponding
443	C-level object still exists. If you try to access an object that has no	763	C-level object still exists. If you try to access an object that has no
444	valid C counterpart anymore you get an exception at runtime. This method	764	valid C counterpart anymore you get an exception at runtime. This method
445	can be used to test for existence of the C object part without causing an	765	can be used to test for existence of the C object part without causing an
446	exception.	766	exception.
447		767
		768	=cut
		769
		770	# the following variables are defined in .xs and must not be re-created
		771	our @CB_GLOBAL = (); # registry for all global events
		772	our @CB_ATTACHABLE = (); # registry for all attachables
		773	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		774	our @CB_PLAYER = ();
		775	our @CB_CLIENT = ();
		776	our @CB_TYPE = (); # registry for type (cf-object class) based events
		777	our @CB_MAP = ();
		778
		779	my %attachment;
		780
		781	sub cf::attachable::thawer_merge {
		782	# simply override everything except _meta
		783	local $_[0]{_meta};
		784	%{$_[0]} = %{$_[1]};
		785	}
		786
		787	sub _attach_cb($$$$) {
		788	my ($registry, $event, $prio, $cb) = @_;
		789
		790	use sort 'stable';
		791
		792	$cb = [$prio, $cb];
		793
		794	@{$registry->[$event]} = sort
		795	{ $a->[0] cmp $b->[0] }
		796	@{$registry->[$event] || []}, $cb;
		797	}
		798
		799	# hack
		800	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		801
		802	# attach handles attaching event callbacks
		803	# the only thing the caller has to do is pass the correct
		804	# registry (== where the callback attaches to).
		805	sub _attach {
		806	my ($registry, $klass, @arg) = @_;
		807
		808	my $object_type;
		809	my $prio = 0;
		810	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		811
		812	#TODO: get rid of this hack
		813	if ($attachable_klass{$klass}) {
		814	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		815	}
		816
		817	while (@arg) {
		818	my $type = shift @arg;
		819
		820	if ($type eq "prio") {
		821	$prio = shift @arg;
		822
		823	} elsif ($type eq "type") {
		824	$object_type = shift @arg;
		825	$registry = $CB_TYPE[$object_type] ||= [];
		826
		827	} elsif ($type eq "subtype") {
		828	defined $object_type or Carp::croak "subtype specified without type";
		829	my $object_subtype = shift @arg;
		830	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		831
		832	} elsif ($type eq "package") {
		833	my $pkg = shift @arg;
		834
		835	while (my ($name, $id) = each %cb_id) {
		836	if (my $cb = $pkg->can ($name)) {
		837	_attach_cb $registry, $id, $prio, $cb;
		838	}
		839	}
		840
		841	} elsif (exists $cb_id{$type}) {
		842	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		843
		844	} elsif (ref $type) {
		845	warn "attaching objects not supported, ignoring.\n";
		846
		847	} else {
		848	shift @arg;
		849	warn "attach argument '$type' not supported, ignoring.\n";
		850	}
		851	}
		852	}
		853
		854	sub _object_attach {
		855	my ($obj, $name, %arg) = @_;
		856
		857	return if exists $obj->{_attachment}{$name};
		858
		859	if (my $attach = $attachment{$name}) {
		860	my $registry = $obj->registry;
		861
		862	for (@$attach) {
		863	my ($klass, @attach) = @$_;
		864	_attach $registry, $klass, @attach;
		865	}
		866
		867	$obj->{$name} = \%arg;
		868	} else {
		869	warn "object uses attachment '$name' which is not available, postponing.\n";
		870	}
		871
		872	$obj->{_attachment}{$name} = undef;
		873	}
		874
		875	sub cf::attachable::attach {
		876	if (ref $_[0]) {
		877	_object_attach @_;
		878	} else {
		879	_attach shift->_attach_registry, @_;
		880	}
		881	_recalc_want;
		882	};
		883
		884	# all those should be optimised
		885	sub cf::attachable::detach {
		886	my ($obj, $name) = @_;
		887
		888	if (ref $obj) {
		889	delete $obj->{_attachment}{$name};
		890	reattach ($obj);
		891	} else {
		892	Carp::croak "cannot, currently, detach class attachments";
		893	}
		894	_recalc_want;
		895	};
		896
		897	sub cf::attachable::attached {
		898	my ($obj, $name) = @_;
		899
		900	exists $obj->{_attachment}{$name}
		901	}
		902
		903	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		904	eval "#line " . __LINE__ . " 'cf.pm'
		905	sub cf::\L$klass\E::_attach_registry {
		906	(\\\@CB_$klass, KLASS_$klass)
		907	}
		908
		909	sub cf::\L$klass\E::attachment {
		910	my \$name = shift;
		911
		912	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		913	}
		914	";
		915	die if $@;
		916	}
		917
		918	our $override;
		919	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		920
		921	sub override {
		922	$override = 1;
		923	@INVOKE_RESULTS = (@_);
		924	}
		925
		926	sub do_invoke {
		927	my $event = shift;
		928	my $callbacks = shift;
		929
		930	@INVOKE_RESULTS = ();
		931
		932	local $override;
		933
		934	for (@$callbacks) {
		935	eval { &{$_->[1]} };
		936
		937	if ($@) {
		938	warn "$@";
		939	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		940	override;
		941	}
		942
		943	return 1 if $override;
		944	}
		945
		946	0
		947	}
		948
		949	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		950
		951	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		952
		953	Generate an object-specific event with the given arguments.
		954
		955	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		956	removed in future versions), and there is no public API to access override
		957	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		958
448	=back	959	=back
449		960
450	=cut	961	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		962
456	#############################################################################	963	#############################################################################
457	# object support	964	# object support
		965	#
458		966
459	sub instantiate {	967	sub _can_merge {
460	my ($obj, $data) = @_;	968	my ($ob1, $ob2) = @_;
461		969
462	$data = from_json $data;	970	local $Storable::canonical = 1;
		971	my $fob1 = Storable::freeze $ob1;
		972	my $fob2 = Storable::freeze $ob2;
463		973
464	for (@$data) {	974	$fob1 eq $fob2
465	my ($name, $args) = @$_;
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}	975	}
470		976
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	977	sub reattach {
		978	# basically do the same as instantiate, without calling instantiate
473	my ($obj) = @_;	979	my ($obj) = @_;
		980
		981	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		982
474	my $registry = $obj->registry;	983	my $registry = $obj->registry;
475		984
476	@$registry = ();	985	@$registry = ();
477		986
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	987	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		988
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	989	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	990	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	991	for (@$attach) {
483	my ($klass, @attach) = @$_;	992	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	993	_attach $registry, $klass, @attach;
485	}	994	}
486	} else {	995	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	996	warn "object uses attachment '$name' that is not available, postponing.\n";
488	}	997	}
489	}	998	}
490	}	999	}
491		1000
492	sub object_freezer_save {	1001	cf::attachable->attach (
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}
521	}
522
523	sub object_thawer_load {
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	1002	prio => -1000000,
		1003	on_instantiate => sub {
		1004	my ($obj, $data) = @_;
		1005
		1006	$data = from_json $data;
		1007
		1008	for (@$data) {
		1009	my ($name, $args) = @$_;
		1010
		1011	$obj->attach ($name, %{$args || {} });
		1012	}
		1013	},
		1014	on_reattach => \&reattach,
544	on_clone => sub {	1015	on_clone => sub {
545	my ($src, $dst) = @_;	1016	my ($src, $dst) = @_;
546		1017
547	@{$dst->registry} = @{$src->registry};	1018	@{$dst->registry} = @{$src->registry};
548		1019
549	%$dst = %$src;	1020	%$dst = %$src;
550		1021
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	1022	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	1023	if exists $src->{_attachment};
553	},	1024	},
554	;	1025	);
		1026
		1027	sub object_freezer_save {
		1028	my ($filename, $rdata, $objs) = @_;
		1029
		1030	my $guard = cf::lock_acquire "io";
		1031
		1032	sync_job {
		1033	if (length $$rdata) {
		1034	utf8::decode (my $decname = $filename);
		1035	warn sprintf "saving %s (%d,%d)\n",
		1036	$decname, length $$rdata, scalar @$objs;
		1037
		1038	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1039	chmod SAVE_MODE, $fh;
		1040	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1041	aio_fsync $fh if $cf::USE_FSYNC;
		1042	close $fh;
		1043
		1044	if (@$objs) {
		1045	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1046	chmod SAVE_MODE, $fh;
		1047	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1048	aio_write $fh, 0, (length $data), $data, 0;
		1049	aio_fsync $fh if $cf::USE_FSYNC;
		1050	close $fh;
		1051	aio_rename "$filename.pst~", "$filename.pst";
		1052	}
		1053	} else {
		1054	aio_unlink "$filename.pst";
		1055	}
		1056
		1057	aio_rename "$filename~", $filename;
		1058	} else {
		1059	warn "FATAL: $filename~: $!\n";
		1060	}
		1061	} else {
		1062	aio_unlink $filename;
		1063	aio_unlink "$filename.pst";
		1064	}
		1065	};
		1066
		1067	undef $guard;
		1068	}
		1069
		1070	sub object_freezer_as_string {
		1071	my ($rdata, $objs) = @_;
		1072
		1073	use Data::Dumper;
		1074
		1075	$$rdata . Dumper $objs
		1076	}
		1077
		1078	sub object_thawer_load {
		1079	my ($filename) = @_;
		1080
		1081	my ($data, $av);
		1082
		1083	my $guard = cf::lock_acquire "io";
		1084
		1085	(aio_load $filename, $data) >= 0
		1086	or return;
		1087
		1088	unless (aio_stat "$filename.pst") {
		1089	(aio_load "$filename.pst", $av) >= 0
		1090	or return;
		1091
		1092	undef $guard;
		1093	$av = eval { (Storable::thaw $av)->{objs} };
		1094	}
		1095
		1096	utf8::decode (my $decname = $filename);
		1097	warn sprintf "loading %s (%d,%d)\n",
		1098	$decname, length $data, scalar @{$av || []};
		1099
		1100	($data, $av)
		1101	}
		1102
		1103	=head2 COMMAND CALLBACKS
		1104
		1105	=over 4
		1106
		1107	=cut
555		1108
556	#############################################################################	1109	#############################################################################
557	# old plug-in events	1110	# command handling &c
558		1111
559	sub inject_event {	1112	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		1113
563	my $cb = $hook[$event_code]{$extension}	1114	Register a callback for execution when the client sends the user command
564	or return;	1115	$name.
565		1116
566	&$cb	1117	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		1118
588	sub register_command {	1119	sub register_command {
589	my ($name, $time, $cb) = @_;	1120	my ($name, $cb) = @_;
590		1121
591	my $caller = caller;	1122	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	1123	#warn "registering command '$name/$time' to '$caller'";
593		1124
594	push @{ $command{$name} }, [$time, $cb, $caller];	1125	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	1126	}
		1127
		1128	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1129
		1130	Register a callback for execution when the client sends an (synchronous)
		1131	extcmd packet. Ext commands will be processed in the order they are
		1132	received by the server, like other user commands. The first argument is
		1133	the logged-in player. Ext commands can only be processed after a player
		1134	has logged in successfully.
		1135
		1136	If the callback returns something, it is sent back as if reply was being
		1137	called.
		1138
		1139	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1140
		1141	Register a callback for execution when the client sends an (asynchronous)
		1142	exticmd packet. Exti commands are processed by the server as soon as they
		1143	are received, i.e. out of order w.r.t. other commands. The first argument
		1144	is a client socket. Exti commands can be received anytime, even before
		1145	log-in.
		1146
		1147	If the callback returns something, it is sent back as if reply was being
		1148	called.
		1149
		1150	=cut
597		1151
598	sub register_extcmd {	1152	sub register_extcmd {
599	my ($name, $cb) = @_;	1153	my ($name, $cb) = @_;
600		1154
601	my $caller = caller;	1155	$EXTCMD{$name} = $cb;
602	#warn "registering extcmd '$name' to '$caller'";
603
604	$extcmd{$name} = [$cb, $caller];
605	}	1156	}
606		1157
607	sub register {	1158	sub register_exticmd {
608	my ($base, $pkg) = @_;	1159	my ($name, $cb) = @_;
609		1160
610	#TODO	1161	$EXTICMD{$name} = $cb;
611	}	1162	}
612		1163
613	sub load_extension {	1164	cf::player->attach (
614	my ($path) = @_;	1165	on_command => sub {
		1166	my ($pl, $name, $params) = @_;
615		1167
616	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1168	my $cb = $COMMAND{$name}
617	my $base = $1;	1169	or return;
618	my $pkg = $1;
619	$pkg =~ s/[^[:word:]]/_/g;
620	$pkg = "ext::$pkg";
621		1170
622	warn "loading '$path' into '$pkg'\n";	1171	for my $cmd (@$cb) {
623		1172	$cmd->[1]->($pl->ob, $params);
624	open my $fh, "<:utf8", $path
625	or die "$path: $!";
626
627	my $source =
628	"package $pkg; use strict; use utf8;\n"
629	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })
631	. "\n};\n1";
632
633	eval $source
634	or die "$path: $@";
635
636	push @exts, $pkg;
637	$ext_pkg{$base} = $pkg;
638
639	# no strict 'refs';
640	# @{"$pkg\::ISA"} = ext::;
641
642	register $base, $pkg;
643	}
644
645	sub unload_extension {
646	my ($pkg) = @_;
647
648	warn "removing extension $pkg\n";
649
650	# remove hooks
651	#TODO
652	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};
654	# }
655
656	# remove commands
657	for my $name (keys %command) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
659
660	if (@cb) {
661	$command{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};
666	}	1173	}
		1174
		1175	cf::override;
667	}	1176	},
668
669	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
671	delete $extcmd{$name};
672	}
673
674	if (my $cb = $pkg->can ("unload")) {
675	eval {
676	$cb->($pkg);
677	1
678	} or warn "$pkg unloaded, but with errors: $@";
679	}
680
681	Symbol::delete_package $pkg;
682	}
683
684	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;
689	eval {
690	load_extension $ext;
691	1
692	} or warn "$ext not loaded: $@";
693	}
694	}
695
696	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699
700	attach_to_players
701	on_extcmd => sub {	1177	on_extcmd => sub {
702	my ($pl, $buf) = @_;	1178	my ($pl, $buf) = @_;
703		1179
704	my $msg = eval { from_json $buf };	1180	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
705		1181
706	if (ref $msg) {	1182	if (ref $msg) {
		1183	my ($type, $reply, @payload) =
		1184	"ARRAY" eq ref $msg
		1185	? @$msg
		1186	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1187
		1188	my @reply;
		1189
707	if (my $cb = $extcmd{$msg->{msgtype}}) {	1190	if (my $cb = $EXTCMD{$type}) {
708	if (my %reply = $cb->[0]->($pl, $msg)) {	1191	@reply = $cb->($pl, @payload);
709	$pl->ext_reply ($msg->{msgid}, %reply);	1192	}
		1193
		1194	$pl->ext_reply ($reply, @reply)
		1195	if $reply;
		1196
		1197	} else {
		1198	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1199	}
		1200
		1201	cf::override;
		1202	},
		1203	);
		1204
		1205	sub load_extensions {
		1206	cf::sync_job {
		1207	my %todo;
		1208
		1209	for my $path (<$LIBDIR/*.ext>) {
		1210	next unless -r $path;
		1211
		1212	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1213	my $base = $1;
		1214	my $pkg = $1;
		1215	$pkg =~ s/[^[:word:]]/_/g;
		1216	$pkg = "ext::$pkg";
		1217
		1218	open my $fh, "<:utf8", $path
		1219	or die "$path: $!";
		1220
		1221	my $source = do { local $/; <$fh> };
		1222
		1223	my %ext = (
		1224	path => $path,
		1225	base => $base,
		1226	pkg => $pkg,
		1227	);
		1228
		1229	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1230	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1231
		1232	$ext{source} =
		1233	"package $pkg; use strict; use utf8;\n"
		1234	. "#line 1 \"$path\"\n{\n"
		1235	. $source
		1236	. "\n};\n1";
		1237
		1238	$todo{$base} = \%ext;
		1239	}
		1240
		1241	my %done;
		1242	while (%todo) {
		1243	my $progress;
		1244
		1245	while (my ($k, $v) = each %todo) {
		1246	for (split /,\s*/, $v->{meta}{depends}) {
		1247	goto skip
		1248	unless exists $done{$_};
		1249	}
		1250
		1251	warn "... loading '$k' into '$v->{pkg}'\n";
		1252
		1253	unless (eval $v->{source}) {
		1254	my $msg = $@ ? "$v->{path}: $@\n"
		1255	: "$v->{base}: extension inactive.\n";
		1256
		1257	if (exists $v->{meta}{mandatory}) {
		1258	warn $msg;
		1259	warn "mandatory extension failed to load, exiting.\n";
		1260	exit 1;
		1261	}
		1262
		1263	warn $msg;
		1264	}
		1265
		1266	$done{$k} = delete $todo{$k};
		1267	push @EXTS, $v->{pkg};
		1268	$progress = 1;
		1269	}
		1270
		1271	skip:
		1272	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1273	unless $progress;
		1274	}
		1275	};
		1276	}
		1277
		1278	#############################################################################
		1279
		1280	=back
		1281
		1282	=head2 CORE EXTENSIONS
		1283
		1284	Functions and methods that extend core crossfire objects.
		1285
		1286	=cut
		1287
		1288	package cf::player;
		1289
		1290	use Coro::AIO;
		1291
		1292	=head3 cf::player
		1293
		1294	=over 4
		1295
		1296	=item cf::player::num_playing
		1297
		1298	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1299
		1300	=cut
		1301
		1302	sub num_playing {
		1303	scalar grep
		1304	$_->ob->map
		1305	&& !$_->hidden
		1306	&& !$_->ob->flag (cf::FLAG_WIZ),
		1307	cf::player::list
		1308	}
		1309
		1310	=item cf::player::find $login
		1311
		1312	Returns the given player object, loading it if necessary (might block).
		1313
		1314	=cut
		1315
		1316	sub playerdir($) {
		1317	"$PLAYERDIR/"
		1318	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1319	}
		1320
		1321	sub path($) {
		1322	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1323
		1324	(playerdir $login) . "/playerdata"
		1325	}
		1326
		1327	sub find_active($) {
		1328	$cf::PLAYER{$_[0]}
		1329	and $cf::PLAYER{$_[0]}->active
		1330	and $cf::PLAYER{$_[0]}
		1331	}
		1332
		1333	sub exists($) {
		1334	my ($login) = @_;
		1335
		1336	$cf::PLAYER{$login}
		1337	or cf::sync_job { !aio_stat path $login }
		1338	}
		1339
		1340	sub find($) {
		1341	return $cf::PLAYER{$_[0]} || do {
		1342	my $login = $_[0];
		1343
		1344	my $guard = cf::lock_acquire "user_find:$login";
		1345
		1346	$cf::PLAYER{$_[0]} || do {
		1347	# rename old playerfiles to new ones
		1348	#TODO: remove when no longer required
		1349	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1350	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1351	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1352	aio_unlink +(playerdir $login) . "/$login.pl";
		1353
		1354	my $f = new_from_file cf::object::thawer path $login
		1355	or return;
		1356
		1357	$f->next;
		1358	my $pl = cf::player::load_pl $f
		1359	or return;
		1360	local $cf::PLAYER_LOADING{$login} = $pl;
		1361	$f->resolve_delayed_derefs;
		1362	$cf::PLAYER{$login} = $pl
		1363	}
		1364	}
		1365	}
		1366
		1367	sub save($) {
		1368	my ($pl) = @_;
		1369
		1370	return if $pl->{deny_save};
		1371
		1372	my $path = path $pl;
		1373	my $guard = cf::lock_acquire "user_save:$path";
		1374
		1375	return if $pl->{deny_save};
		1376
		1377	aio_mkdir playerdir $pl, 0770;
		1378	$pl->{last_save} = $cf::RUNTIME;
		1379
		1380	$pl->save_pl ($path);
		1381	cf::cede_to_tick;
		1382	}
		1383
		1384	sub new($) {
		1385	my ($login) = @_;
		1386
		1387	my $self = create;
		1388
		1389	$self->ob->name ($login);
		1390	$self->{deny_save} = 1;
		1391
		1392	$cf::PLAYER{$login} = $self;
		1393
		1394	$self
		1395	}
		1396
		1397	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1398
		1399	=cut
		1400
		1401	sub send_msg {
		1402	my $ns = shift->ns
		1403	or return;
		1404	$ns->send_msg (@_);
		1405	}
		1406
		1407	=item $pl->quit_character
		1408
		1409	Nukes the player without looking back. If logged in, the connection will
		1410	be destroyed. May block for a long time.
		1411
		1412	=cut
		1413
		1414	sub quit_character {
		1415	my ($pl) = @_;
		1416
		1417	my $name = $pl->ob->name;
		1418
		1419	$pl->{deny_save} = 1;
		1420	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1421
		1422	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1423	$pl->deactivate;
		1424	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1425	$pl->ns->destroy if $pl->ns;
		1426
		1427	my $path = playerdir $pl;
		1428	my $temp = "$path~$cf::RUNTIME~deleting~";
		1429	aio_rename $path, $temp;
		1430	delete $cf::PLAYER{$pl->ob->name};
		1431	$pl->destroy;
		1432
		1433	my $prefix = qr<^~\Q$name\E/>;
		1434
		1435	# nuke player maps
		1436	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1437
		1438	IO::AIO::aio_rmtree $temp;
		1439	}
		1440
		1441	=item $pl->kick
		1442
		1443	Kicks a player out of the game. This destroys the connection.
		1444
		1445	=cut
		1446
		1447	sub kick {
		1448	my ($pl, $kicker) = @_;
		1449
		1450	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1451	$pl->killer ("kicked");
		1452	$pl->ns->destroy;
		1453	}
		1454
		1455	=item cf::player::list_logins
		1456
		1457	Returns am arrayref of all valid playernames in the system, can take a
		1458	while and may block, so not sync_job-capable, ever.
		1459
		1460	=cut
		1461
		1462	sub list_logins {
		1463	my $dirs = aio_readdir $PLAYERDIR
		1464	or return [];
		1465
		1466	my @logins;
		1467
		1468	for my $login (@$dirs) {
		1469	my $path = path $login;
		1470
		1471	# a .pst is a dead give-away for a valid player
		1472	unless (-e "$path.pst") {
		1473	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1474	aio_read $fh, 0, 512, my $buf, 0 or next;
		1475	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1476	}
		1477
		1478	utf8::decode $login;
		1479	push @logins, $login;
		1480	}
		1481
		1482	\@logins
		1483	}
		1484
		1485	=item $player->maps
		1486
		1487	Returns an arrayref of map paths that are private for this
		1488	player. May block.
		1489
		1490	=cut
		1491
		1492	sub maps($) {
		1493	my ($pl) = @_;
		1494
		1495	$pl = ref $pl ? $pl->ob->name : $pl;
		1496
		1497	my $files = aio_readdir playerdir $pl
		1498	or return;
		1499
		1500	my @paths;
		1501
		1502	for (@$files) {
		1503	utf8::decode $_;
		1504	next if /\.(?:pl|pst)$/;
		1505	next unless /^$PATH_SEP/o;
		1506
		1507	push @paths, cf::map::normalise "~$pl/$_";
		1508	}
		1509
		1510	\@paths
		1511	}
		1512
		1513	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1514
		1515	Expand crossfire pod fragments into protocol xml.
		1516
		1517	=cut
		1518
		1519	sub expand_cfpod {
		1520	((my $self), (local $_)) = @_;
		1521
		1522	# escape & and <
		1523	s/&/&amp;/g;
		1524	s/(?<![BIUGHT])</&lt;/g;
		1525
		1526	# this is buggy, it needs to properly take care of nested <'s
		1527
		1528	1 while
		1529	# replace B<>, I<>, U<> etc.
		1530	s/B<([^\>]*)>/<b>$1<\/b>/
		1531	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1532	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1533	|| s/T<([^\>]*)>/<big><b>$1<\/b><\/big>/
		1534	# replace G<male|female> tags
		1535	|| s{G<([^>|]*)\|([^>]*)>}{
		1536	$self->gender ? $2 : $1
		1537	}ge
		1538	# replace H<hint text>
		1539	|| s{H<([^\>]*)>}
		1540	{
		1541	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1542	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1543	"")
		1544	[$self->{hintmode}]
		1545	}ge;
		1546
		1547	# create single paragraphs (very hackish)
		1548	s/(?<=\S)\n(?=\w)/ /g;
		1549
		1550	# compress some whitespace
		1551	s/\s+\n/\n/g; # ws line-ends
		1552	s/\n\n+/\n/g; # double lines
		1553	s/^\n+//; # beginning lines
		1554	s/\n+$//; # ending lines
		1555
		1556	$_
		1557	}
		1558
		1559	sub hintmode {
		1560	$_[0]{hintmode} = $_[1] if @_ > 1;
		1561	$_[0]{hintmode}
		1562	}
		1563
		1564	=item $player->ext_reply ($msgid, @msg)
		1565
		1566	Sends an ext reply to the player.
		1567
		1568	=cut
		1569
		1570	sub ext_reply($$@) {
		1571	my ($self, $id, @msg) = @_;
		1572
		1573	$self->ns->ext_reply ($id, @msg)
		1574	}
		1575
		1576	=item $player->ext_msg ($type, @msg)
		1577
		1578	Sends an ext event to the client.
		1579
		1580	=cut
		1581
		1582	sub ext_msg($$@) {
		1583	my ($self, $type, @msg) = @_;
		1584
		1585	$self->ns->ext_msg ($type, @msg);
		1586	}
		1587
		1588	=head3 cf::region
		1589
		1590	=over 4
		1591
		1592	=cut
		1593
		1594	package cf::region;
		1595
		1596	=item cf::region::find_by_path $path
		1597
		1598	Tries to decuce the likely region for a map knowing only its path.
		1599
		1600	=cut
		1601
		1602	sub find_by_path($) {
		1603	my ($path) = @_;
		1604
		1605	my ($match, $specificity);
		1606
		1607	for my $region (list) {
		1608	if ($region->{match} && $path =~ $region->{match}) {
		1609	($match, $specificity) = ($region, $region->specificity)
		1610	if $region->specificity > $specificity;
		1611	}
		1612	}
		1613
		1614	$match
		1615	}
		1616
		1617	=back
		1618
		1619	=head3 cf::map
		1620
		1621	=over 4
		1622
		1623	=cut
		1624
		1625	package cf::map;
		1626
		1627	use Fcntl;
		1628	use Coro::AIO;
		1629
		1630	use overload
		1631	'""' => \&as_string,
		1632	fallback => 1;
		1633
		1634	our $MAX_RESET = 3600;
		1635	our $DEFAULT_RESET = 3000;
		1636
		1637	sub generate_random_map {
		1638	my ($self, $rmp) = @_;
		1639	# mit "rum" bekleckern, nicht
		1640	$self->_create_random_map (
		1641	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1642	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1643	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1644	$rmp->{exit_on_final_map},
		1645	$rmp->{xsize}, $rmp->{ysize},
		1646	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1647	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1648	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1649	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1650	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1651	(cf::region::find $rmp->{region}), $rmp->{custom}
		1652	)
		1653	}
		1654
		1655	=item cf::map->register ($regex, $prio)
		1656
		1657	Register a handler for the map path matching the given regex at the
		1658	givne priority (higher is better, built-in handlers have priority 0, the
		1659	default).
		1660
		1661	=cut
		1662
		1663	sub register {
		1664	my (undef, $regex, $prio) = @_;
		1665	my $pkg = caller;
		1666
		1667	no strict;
		1668	push @{"$pkg\::ISA"}, __PACKAGE__;
		1669
		1670	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1671	}
		1672
		1673	# also paths starting with '/'
		1674	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1675
		1676	sub thawer_merge {
		1677	my ($self, $merge) = @_;
		1678
		1679	# we have to keep some variables in memory intact
		1680	local $self->{path};
		1681	local $self->{load_path};
		1682
		1683	$self->SUPER::thawer_merge ($merge);
		1684	}
		1685
		1686	sub normalise {
		1687	my ($path, $base) = @_;
		1688
		1689	$path = "$path"; # make sure its a string
		1690
		1691	$path =~ s/\.map$//;
		1692
		1693	# map plan:
		1694	#
		1695	# /! non-realised random map exit (special hack!)
		1696	# {... are special paths that are not being touched
		1697	# ?xxx/... are special absolute paths
		1698	# ?random/... random maps
		1699	# /... normal maps
		1700	# ~user/... per-player map of a specific user
		1701
		1702	$path =~ s/$PATH_SEP/\//go;
		1703
		1704	# treat it as relative path if it starts with
		1705	# something that looks reasonable
		1706	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1707	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1708
		1709	$base =~ s{[^/]+/?$}{};
		1710	$path = "$base/$path";
		1711	}
		1712
		1713	for ($path) {
		1714	redo if s{//}{/};
		1715	redo if s{/\.?/}{/};
		1716	redo if s{/[^/]+/\.\./}{/};
		1717	}
		1718
		1719	$path
		1720	}
		1721
		1722	sub new_from_path {
		1723	my (undef, $path, $base) = @_;
		1724
		1725	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1726
		1727	$path = normalise $path, $base;
		1728
		1729	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1730	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1731	my $self = bless cf::map::new, $pkg;
		1732	$self->{path} = $path; $self->path ($path);
		1733	$self->init; # pass $1 etc.
		1734	return $self;
		1735	}
		1736	}
		1737
		1738	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1739	()
		1740	}
		1741
		1742	sub init {
		1743	my ($self) = @_;
		1744
		1745	$self
		1746	}
		1747
		1748	sub as_string {
		1749	my ($self) = @_;
		1750
		1751	"$self->{path}"
		1752	}
		1753
		1754	# the displayed name, this is a one way mapping
		1755	sub visible_name {
		1756	&as_string
		1757	}
		1758
		1759	# the original (read-only) location
		1760	sub load_path {
		1761	my ($self) = @_;
		1762
		1763	"$MAPDIR/$self->{path}.map"
		1764	}
		1765
		1766	# the temporary/swap location
		1767	sub save_path {
		1768	my ($self) = @_;
		1769
		1770	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1771	"$TMPDIR/$path.map"
		1772	}
		1773
		1774	# the unique path, undef == no special unique path
		1775	sub uniq_path {
		1776	my ($self) = @_;
		1777
		1778	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1779	"$UNIQUEDIR/$path"
		1780	}
		1781
		1782	# and all this just because we cannot iterate over
		1783	# all maps in C++...
		1784	sub change_all_map_light {
		1785	my ($change) = @_;
		1786
		1787	$_->change_map_light ($change)
		1788	for grep $_->outdoor, values %cf::MAP;
		1789	}
		1790
		1791	sub decay_objects {
		1792	my ($self) = @_;
		1793
		1794	return if $self->{deny_reset};
		1795
		1796	$self->do_decay_objects;
		1797	}
		1798
		1799	sub unlink_save {
		1800	my ($self) = @_;
		1801
		1802	utf8::encode (my $save = $self->save_path);
		1803	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1804	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1805	}
		1806
		1807	sub load_header_from($) {
		1808	my ($self, $path) = @_;
		1809
		1810	utf8::encode $path;
		1811	my $f = new_from_file cf::object::thawer $path
		1812	or return;
		1813
		1814	$self->_load_header ($f)
		1815	or return;
		1816
		1817	local $MAP_LOADING{$self->{path}} = $self;
		1818	$f->resolve_delayed_derefs;
		1819
		1820	$self->{load_path} = $path;
		1821
		1822	1
		1823	}
		1824
		1825	sub load_header_orig {
		1826	my ($self) = @_;
		1827
		1828	$self->load_header_from ($self->load_path)
		1829	}
		1830
		1831	sub load_header_temp {
		1832	my ($self) = @_;
		1833
		1834	$self->load_header_from ($self->save_path)
		1835	}
		1836
		1837	sub prepare_temp {
		1838	my ($self) = @_;
		1839
		1840	$self->last_access ((delete $self->{last_access})
		1841	|| $cf::RUNTIME); #d#
		1842	# safety
		1843	$self->{instantiate_time} = $cf::RUNTIME
		1844	if $self->{instantiate_time} > $cf::RUNTIME;
		1845	}
		1846
		1847	sub prepare_orig {
		1848	my ($self) = @_;
		1849
		1850	$self->{load_original} = 1;
		1851	$self->{instantiate_time} = $cf::RUNTIME;
		1852	$self->last_access ($cf::RUNTIME);
		1853	$self->instantiate;
		1854	}
		1855
		1856	sub load_header {
		1857	my ($self) = @_;
		1858
		1859	if ($self->load_header_temp) {
		1860	$self->prepare_temp;
		1861	} else {
		1862	$self->load_header_orig
		1863	or return;
		1864	$self->prepare_orig;
		1865	}
		1866
		1867	$self->{deny_reset} = 1
		1868	if $self->no_reset;
		1869
		1870	$self->default_region (cf::region::find_by_path $self->{path})
		1871	unless $self->default_region;
		1872
		1873	1
		1874	}
		1875
		1876	sub find;
		1877	sub find {
		1878	my ($path, $origin) = @_;
		1879
		1880	$path = normalise $path, $origin && $origin->path;
		1881
		1882	cf::lock_wait "map_data:$path";#d#remove
		1883	cf::lock_wait "map_find:$path";
		1884
		1885	$cf::MAP{$path} || do {
		1886	my $guard1 = cf::lock_acquire "map_find:$path";
		1887	my $guard2 = cf::lock_acquire "map_data:$path"; # just for the fun of it
		1888
		1889	my $map = new_from_path cf::map $path
		1890	or return;
		1891
		1892	$map->{last_save} = $cf::RUNTIME;
		1893
		1894	$map->load_header
		1895	or return;
		1896
		1897	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1898	# doing this can freeze the server in a sync job, obviously
		1899	#$cf::WAIT_FOR_TICK->wait;
		1900	undef $guard1;
		1901	undef $guard2;
		1902	$map->reset;
		1903	return find $path;
		1904	}
		1905
		1906	$cf::MAP{$path} = $map
		1907	}
		1908	}
		1909
		1910	sub pre_load { }
		1911	sub post_load { }
		1912
		1913	sub load {
		1914	my ($self) = @_;
		1915
		1916	local $self->{deny_reset} = 1; # loading can take a long time
		1917
		1918	my $path = $self->{path};
		1919
		1920	{
		1921	my $guard = cf::lock_acquire "map_data:$path";
		1922
		1923	return unless $self->valid;
		1924	return unless $self->in_memory == cf::MAP_SWAPPED;
		1925
		1926	$self->in_memory (cf::MAP_LOADING);
		1927
		1928	$self->alloc;
		1929
		1930	$self->pre_load;
		1931	cf::cede_to_tick;
		1932
		1933	my $f = new_from_file cf::object::thawer $self->{load_path};
		1934	$f->skip_block;
		1935	$self->_load_objects ($f)
		1936	or return;
		1937
		1938	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1939	if delete $self->{load_original};
		1940
		1941	if (my $uniq = $self->uniq_path) {
		1942	utf8::encode $uniq;
		1943	unless (aio_stat $uniq) {
		1944	if (my $f = new_from_file cf::object::thawer $uniq) {
		1945	$self->clear_unique_items;
		1946	$self->_load_objects ($f);
		1947	$f->resolve_delayed_derefs;
710	}	1948	}
711	}	1949	}
712	} else {
713	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
714	}	1950	}
715		1951
716	cf::override;	1952	$f->resolve_delayed_derefs;
		1953
		1954	cf::cede_to_tick;
		1955	# now do the right thing for maps
		1956	$self->link_multipart_objects;
		1957	$self->difficulty ($self->estimate_difficulty)
		1958	unless $self->difficulty;
		1959	cf::cede_to_tick;
		1960
		1961	unless ($self->{deny_activate}) {
		1962	$self->decay_objects;
		1963	$self->fix_auto_apply;
		1964	$self->update_buttons;
		1965	cf::cede_to_tick;
		1966	$self->set_darkness_map;
		1967	cf::cede_to_tick;
		1968	$self->activate;
		1969	}
		1970
		1971	$self->{last_save} = $cf::RUNTIME;
		1972	$self->last_access ($cf::RUNTIME);
		1973
		1974	$self->in_memory (cf::MAP_IN_MEMORY);
717	},	1975	}
718	;
719		1976
720	#############################################################################	1977	$self->post_load;
721	# load/save/clean perl data associated with a map	1978	}
722		1979
723	*cf::mapsupport::on_clean = sub {	1980	sub customise_for {
		1981	my ($self, $ob) = @_;
		1982
		1983	return find "~" . $ob->name . "/" . $self->{path}
		1984	if $self->per_player;
		1985
		1986	# return find "?party/" . $ob->name . "/" . $self->{path}
		1987	# if $self->per_party;
		1988
		1989	$self
		1990	}
		1991
		1992	# find and load all maps in the 3x3 area around a map
		1993	sub load_neighbours {
724	my ($map) = @_;	1994	my ($map) = @_;
725		1995
726	my $path = $map->tmpname;	1996	my @neigh; # diagonal neighbours
727	defined $path or return;
728		1997
729	unlink "$path.pst";	1998	for (0 .. 3) {
730	};	1999	my $neigh = $map->tile_path ($_)
		2000	or next;
		2001	$neigh = find $neigh, $map
		2002	or next;
		2003	$neigh->load;
731		2004
732	attach_to_maps prio => -10000, package => cf::mapsupport::;	2005	push @neigh,
		2006	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2007	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2008	}
733		2009
734	#############################################################################	2010	for (grep defined $_->[0], @neigh) {
735	# load/save perl data associated with player->ob objects	2011	my ($path, $origin) = @$_;
736		2012	my $neigh = find $path, $origin
737	sub all_objects(@) {	2013	or next;
738	@_, map all_objects ($_->inv), @_	2014	$neigh->load;
		2015	}
739	}	2016	}
740		2017
741	# TODO: compatibility cruft, remove when no longer needed	2018	sub find_sync {
742	attach_to_players	2019	my ($path, $origin) = @_;
743	on_load => sub {
744	my ($pl, $path) = @_;
745		2020
746	for my $o (all_objects $pl->ob) {	2021	cf::sync_job { find $path, $origin }
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2022	}
748	$o->set_ob_key_value ("_perl_data");
749		2023
750	%$o = %{ Storable::thaw pack "H*", $value };	2024	sub do_load_sync {
		2025	my ($map) = @_;
		2026
		2027	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2028	if $Coro::current == $Coro::main;
		2029
		2030	cf::sync_job { $map->load };
		2031	}
		2032
		2033	our %MAP_PREFETCH;
		2034	our $MAP_PREFETCHER = undef;
		2035
		2036	sub find_async {
		2037	my ($path, $origin, $load) = @_;
		2038
		2039	$path = normalise $path, $origin && $origin->{path};
		2040
		2041	if (my $map = $cf::MAP{$path}) {
		2042	return $map if !$load || $map->in_memory == cf::MAP_IN_MEMORY;
		2043	}
		2044
		2045	$MAP_PREFETCH{$path} |= $load;
		2046
		2047	$MAP_PREFETCHER ||= cf::async {
		2048	while (%MAP_PREFETCH) {
		2049	while (my ($k, $v) = each %MAP_PREFETCH) {
		2050	if (my $map = find $k) {
		2051	$map->load if $v;
		2052	}
		2053
		2054	delete $MAP_PREFETCH{$k};
751	}	2055	}
752	}	2056	}
		2057	undef $MAP_PREFETCHER;
		2058	};
		2059	$MAP_PREFETCHER->prio (6);
		2060
		2061	()
		2062	}
		2063
		2064	sub save {
		2065	my ($self) = @_;
		2066
		2067	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2068
		2069	$self->{last_save} = $cf::RUNTIME;
		2070
		2071	return unless $self->dirty;
		2072
		2073	my $save = $self->save_path; utf8::encode $save;
		2074	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2075
		2076	$self->{load_path} = $save;
		2077
		2078	return if $self->{deny_save};
		2079
		2080	local $self->{last_access} = $self->last_access;#d#
		2081
		2082	cf::async {
		2083	$_->contr->save for $self->players;
		2084	};
		2085
		2086	if ($uniq) {
		2087	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2088	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2089	} else {
		2090	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
753	},	2091	}
754	;	2092	}
755		2093
756	#############################################################################	2094	sub swap_out {
		2095	my ($self) = @_;
757		2096
758	=head2 CORE EXTENSIONS	2097	# save first because save cedes
		2098	$self->save;
759		2099
760	Functions and methods that extend core crossfire objects.	2100	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2101
		2102	return if $self->players;
		2103	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2104	return if $self->{deny_save};
		2105
		2106	$self->in_memory (cf::MAP_SWAPPED);
		2107
		2108	$self->deactivate;
		2109	$_->clear_links_to ($self) for values %cf::MAP;
		2110	$self->clear;
		2111	}
		2112
		2113	sub reset_at {
		2114	my ($self) = @_;
		2115
		2116	# TODO: safety, remove and allow resettable per-player maps
		2117	return 1e99 if $self->{deny_reset};
		2118
		2119	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2120	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2121
		2122	$time + $to
		2123	}
		2124
		2125	sub should_reset {
		2126	my ($self) = @_;
		2127
		2128	$self->reset_at <= $cf::RUNTIME
		2129	}
		2130
		2131	sub reset {
		2132	my ($self) = @_;
		2133
		2134	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2135
		2136	return if $self->players;
		2137
		2138	warn "resetting map ", $self->path;
		2139
		2140	$self->in_memory (cf::MAP_SWAPPED);
		2141
		2142	# need to save uniques path
		2143	unless ($self->{deny_save}) {
		2144	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2145
		2146	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2147	if $uniq;
		2148	}
		2149
		2150	delete $cf::MAP{$self->path};
		2151
		2152	$self->deactivate;
		2153	$_->clear_links_to ($self) for values %cf::MAP;
		2154	$self->clear;
		2155
		2156	$self->unlink_save;
		2157	$self->destroy;
		2158	}
		2159
		2160	my $nuke_counter = "aaaa";
		2161
		2162	sub nuke {
		2163	my ($self) = @_;
		2164
		2165	{
		2166	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2167
		2168	delete $cf::MAP{$self->path};
		2169
		2170	$self->unlink_save;
		2171
		2172	bless $self, "cf::map";
		2173	delete $self->{deny_reset};
		2174	$self->{deny_save} = 1;
		2175	$self->reset_timeout (1);
		2176	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2177
		2178	$cf::MAP{$self->path} = $self;
		2179	}
		2180
		2181	$self->reset; # polite request, might not happen
		2182	}
		2183
		2184	=item $maps = cf::map::tmp_maps
		2185
		2186	Returns an arrayref with all map paths of currently instantiated and saved
		2187	maps. May block.
		2188
		2189	=cut
		2190
		2191	sub tmp_maps() {
		2192	[
		2193	map {
		2194	utf8::decode $_;
		2195	/\.map$/
		2196	? normalise $_
		2197	: ()
		2198	} @{ aio_readdir $TMPDIR or [] }
		2199	]
		2200	}
		2201
		2202	=item $maps = cf::map::random_maps
		2203
		2204	Returns an arrayref with all map paths of currently instantiated and saved
		2205	random maps. May block.
		2206
		2207	=cut
		2208
		2209	sub random_maps() {
		2210	[
		2211	map {
		2212	utf8::decode $_;
		2213	/\.map$/
		2214	? normalise "?random/$_"
		2215	: ()
		2216	} @{ aio_readdir $RANDOMDIR or [] }
		2217	]
		2218	}
		2219
		2220	=item cf::map::unique_maps
		2221
		2222	Returns an arrayref of paths of all shared maps that have
		2223	instantiated unique items. May block.
		2224
		2225	=cut
		2226
		2227	sub unique_maps() {
		2228	[
		2229	map {
		2230	utf8::decode $_;
		2231	/\.map$/
		2232	? normalise $_
		2233	: ()
		2234	} @{ aio_readdir $UNIQUEDIR or [] }
		2235	]
		2236	}
		2237
		2238	package cf;
		2239
		2240	=back
		2241
		2242	=head3 cf::object
		2243
		2244	=cut
		2245
		2246	package cf::object;
761		2247
762	=over 4	2248	=over 4
763		2249
764	=item cf::player::exists $login	2250	=item $ob->inv_recursive
765		2251
766	Returns true when the given account exists.	2252	Returns the inventory of the object _and_ their inventories, recursively.
767		2253
768	=cut	2254	=cut
769		2255
770	sub cf::player::exists($) {	2256	sub inv_recursive_;
771	cf::player::find $_[0]	2257	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2258	map { $_, inv_recursive_ $_->inv } @_
773	}	2259	}
774		2260
		2261	sub inv_recursive {
		2262	inv_recursive_ inv $_[0]
		2263	}
		2264
		2265	=item $ref = $ob->ref
		2266
		2267	creates and returns a persistent reference to an objetc that can be stored as a string.
		2268
		2269	=item $ob = cf::object::deref ($refstring)
		2270
		2271	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2272	even if the object actually exists. May block.
		2273
		2274	=cut
		2275
		2276	sub deref {
		2277	my ($ref) = @_;
		2278
		2279	# temporary compatibility#TODO#remove
		2280	$ref =~ s{^<}{player/<};
		2281
		2282	if ($ref =~ m{^player\/(<1\.\d+>)/(.*)$}) {
		2283	my ($uuid, $name) = ($1, $2);
		2284	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2285	or return;
		2286	$pl->ob->uuid eq $uuid
		2287	or return;
		2288
		2289	$pl->ob
		2290	} else {
		2291	warn "$ref: cannot resolve object reference\n";
		2292	undef
		2293	}
		2294	}
		2295
		2296	package cf;
		2297
		2298	=back
		2299
		2300	=head3 cf::object::player
		2301
		2302	=over 4
		2303
775	=item $player->reply ($npc, $msg[, $flags])	2304	=item $player_object->reply ($npc, $msg[, $flags])
776		2305
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2306	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	2307	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	2308	dialogue with the given NPC character.
780		2309
781	=cut	2310	=cut
782		2311
783	# rough implementation of a future "reply" method that works	2312	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	2313	# with dialog boxes.
		2314	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	2315	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	2316	my ($self, $npc, $msg, $flags) = @_;
787		2317
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2318	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		2319
790	if ($self->{record_replies}) {	2320	if ($self->{record_replies}) {
791	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2321	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2322
792	} else {	2323	} else {
		2324	my $pl = $self->contr;
		2325
		2326	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2327	my $dialog = $pl->{npc_dialog};
		2328	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2329
		2330	} else {
793	$msg = $npc->name . " says: $msg" if $npc;	2331	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	2332	$self->message ($msg, $flags);
		2333	}
		2334	}
		2335	}
		2336
		2337	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2338
		2339	=cut
		2340
		2341	sub cf::object::send_msg {
		2342	my $pl = shift->contr
		2343	or return;
		2344	$pl->send_msg (@_);
		2345	}
		2346
		2347	=item $player_object->may ("access")
		2348
		2349	Returns wether the given player is authorized to access resource "access"
		2350	(e.g. "command_wizcast").
		2351
		2352	=cut
		2353
		2354	sub cf::object::player::may {
		2355	my ($self, $access) = @_;
		2356
		2357	$self->flag (cf::FLAG_WIZ) ||
		2358	(ref $cf::CFG{"may_$access"}
		2359	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2360	: $cf::CFG{"may_$access"})
		2361	}
		2362
		2363	=item $player_object->enter_link
		2364
		2365	Freezes the player and moves him/her to a special map (C<{link}>).
		2366
		2367	The player should be reasonably safe there for short amounts of time. You
		2368	I<MUST> call C<leave_link> as soon as possible, though.
		2369
		2370	Will never block.
		2371
		2372	=item $player_object->leave_link ($map, $x, $y)
		2373
		2374	Moves the player out of the special C<{link}> map onto the specified
		2375	map. If the map is not valid (or omitted), the player will be moved back
		2376	to the location he/she was before the call to C<enter_link>, or, if that
		2377	fails, to the emergency map position.
		2378
		2379	Might block.
		2380
		2381	=cut
		2382
		2383	sub link_map {
		2384	unless ($LINK_MAP) {
		2385	$LINK_MAP = cf::map::find "{link}"
		2386	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2387	$LINK_MAP->load;
		2388	}
		2389
		2390	$LINK_MAP
		2391	}
		2392
		2393	sub cf::object::player::enter_link {
		2394	my ($self) = @_;
		2395
		2396	$self->deactivate_recursive;
		2397
		2398	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2399
		2400	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2401	if $self->map && $self->map->{path} ne "{link}";
		2402
		2403	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2404	}
		2405
		2406	sub cf::object::player::leave_link {
		2407	my ($self, $map, $x, $y) = @_;
		2408
		2409	return unless $self->contr->active;
		2410
		2411	my $link_pos = delete $self->{_link_pos};
		2412
		2413	unless ($map) {
		2414	# restore original map position
		2415	($map, $x, $y) = @{ $link_pos || [] };
		2416	$map = cf::map::find $map;
		2417
		2418	unless ($map) {
		2419	($map, $x, $y) = @$EMERGENCY_POSITION;
		2420	$map = cf::map::find $map
		2421	or die "FATAL: cannot load emergency map\n";
		2422	}
		2423	}
		2424
		2425	($x, $y) = (-1, -1)
		2426	unless (defined $x) && (defined $y);
		2427
		2428	# use -1 or undef as default coordinates, not 0, 0
		2429	($x, $y) = ($map->enter_x, $map->enter_y)
		2430	if $x <=0 && $y <= 0;
		2431
		2432	$map->load;
		2433	$map->load_neighbours;
		2434
		2435	return unless $self->contr->active;
		2436	$self->activate_recursive;
		2437
		2438	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2439	$self->enter_map ($map, $x, $y);
		2440	}
		2441
		2442	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2443
		2444	Moves the player to the given map-path and coordinates by first freezing
		2445	her, loading and preparing them map, calling the provided $check callback
		2446	that has to return the map if sucecssful, and then unfreezes the player on
		2447	the new (success) or old (failed) map position. In either case, $done will
		2448	be called at the end of this process.
		2449
		2450	=cut
		2451
		2452	our $GOTOGEN;
		2453
		2454	sub cf::object::player::goto {
		2455	my ($self, $path, $x, $y, $check, $done) = @_;
		2456
		2457	# do generation counting so two concurrent goto's will be executed in-order
		2458	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2459
		2460	$self->enter_link;
		2461
		2462	(async {
		2463	# *tag paths override both path and x|y
		2464	if ($path =~ /^\*(.*)$/) {
		2465	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2466	my $ob = $obs[rand @obs];
		2467
		2468	# see if we actually can go there
		2469	# todo: use ob_blocked to check all tiles of the destination "object"
		2470	# for suitability.
		2471
		2472	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2473	}
		2474	}
		2475
		2476	my $map = eval {
		2477	my $map = cf::map::find $path;
		2478
		2479	if ($map) {
		2480	$map = $map->customise_for ($self);
		2481	$map = $check->($map) if $check && $map;
		2482	} else {
		2483	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2484	}
		2485
		2486	$map
		2487	};
		2488
		2489	if ($@) {
		2490	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2491	LOG llevError | logBacktrace, Carp::longmess $@;
		2492	}
		2493
		2494	if ($gen == $self->{_goto_generation}) {
		2495	delete $self->{_goto_generation};
		2496	$self->leave_link ($map, $x, $y);
		2497	}
		2498
		2499	$done->() if $done;
		2500	})->prio (1);
		2501	}
		2502
		2503	=item $player_object->enter_exit ($exit_object)
		2504
		2505	=cut
		2506
		2507	sub parse_random_map_params {
		2508	my ($spec) = @_;
		2509
		2510	my $rmp = { # defaults
		2511	xsize => (cf::rndm 15, 40),
		2512	ysize => (cf::rndm 15, 40),
		2513	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2514	#layout => string,
795	}	2515	};
796	}
797		2516
		2517	for (split /\n/, $spec) {
		2518	my ($k, $v) = split /\s+/, $_, 2;
		2519
		2520	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2521	}
		2522
		2523	$rmp
		2524	}
		2525
		2526	sub prepare_random_map {
		2527	my ($exit) = @_;
		2528
		2529	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2530
		2531	# all this does is basically replace the /! path by
		2532	# a new random map path (?random/...) with a seed
		2533	# that depends on the exit object
		2534
		2535	my $rmp = parse_random_map_params $exit->msg;
		2536
		2537	if ($exit->map) {
		2538	$rmp->{region} = $exit->region->name;
		2539	$rmp->{origin_map} = $exit->map->path;
		2540	$rmp->{origin_x} = $exit->x;
		2541	$rmp->{origin_y} = $exit->y;
		2542	}
		2543
		2544	$rmp->{random_seed} ||= $exit->random_seed;
		2545
		2546	my $data = cf::to_json $rmp;
		2547	my $md5 = Digest::MD5::md5_hex $data;
		2548	my $meta = "$RANDOMDIR/$md5.meta";
		2549
		2550	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2551	aio_write $fh, 0, (length $data), $data, 0;
		2552	undef $fh;
		2553	aio_rename "$meta~", $meta;
		2554
		2555	$exit->slaying ("?random/$md5");
		2556	$exit->msg (undef);
		2557	}
		2558	}
		2559
		2560	sub cf::object::player::enter_exit {
		2561	my ($self, $exit) = @_;
		2562
		2563	return unless $self->type == cf::PLAYER;
		2564
		2565	if ($exit->slaying eq "/!") {
		2566	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2567	# the problem is that $exit might not survive long enough
		2568	# so it needs to be done right now, right here
		2569	cf::sync_job { prepare_random_map $exit };
		2570	}
		2571
		2572	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2573	my $hp = $exit->stats->hp;
		2574	my $sp = $exit->stats->sp;
		2575
		2576	$self->enter_link;
		2577
		2578	# if exit is damned, update players death & WoR home-position
		2579	$self->contr->savebed ($slaying, $hp, $sp)
		2580	if $exit->flag (FLAG_DAMNED);
		2581
		2582	(async {
		2583	$self->deactivate_recursive; # just to be sure
		2584	unless (eval {
		2585	$self->goto ($slaying, $hp, $sp);
		2586
		2587	1;
		2588	}) {
		2589	$self->message ("Something went wrong deep within the crossfire server. "
		2590	. "I'll try to bring you back to the map you were before. "
		2591	. "Please report this to the dungeon master!",
		2592	cf::NDI_UNIQUE | cf::NDI_RED);
		2593
		2594	warn "ERROR in enter_exit: $@";
		2595	$self->leave_link;
		2596	}
		2597	})->prio (1);
		2598	}
		2599
		2600	=head3 cf::client
		2601
		2602	=over 4
		2603
		2604	=item $client->send_drawinfo ($text, $flags)
		2605
		2606	Sends a drawinfo packet to the client. Circumvents output buffering so
		2607	should not be used under normal circumstances.
		2608
		2609	=cut
		2610
		2611	sub cf::client::send_drawinfo {
		2612	my ($self, $text, $flags) = @_;
		2613
		2614	utf8::encode $text;
		2615	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2616	}
		2617
		2618	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2619
		2620	Send a drawinfo or msg packet to the client, formatting the msg for the
		2621	client if neccessary. C<$type> should be a string identifying the type of
		2622	the message, with C<log> being the default. If C<$color> is negative, suppress
		2623	the message unless the client supports the msg packet.
		2624
		2625	=cut
		2626
		2627	our %CHANNEL = (
		2628	"c/identify" => {
		2629	id => "identify",
		2630	title => "Identify",
		2631	reply => undef,
		2632	tooltip => "Items recently identified",
		2633	},
		2634	"c/examine" => {
		2635	id => "examine",
		2636	title => "Examine",
		2637	reply => undef,
		2638	tooltip => "Signs and other items you examined",
		2639	},
		2640	);
		2641
		2642	sub cf::client::send_msg {
		2643	my ($self, $channel, $msg, $color, @extra) = @_;
		2644
		2645	$msg = $self->pl->expand_cfpod ($msg);
		2646
		2647	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2648
		2649	# check predefined channels, for the benefit of C
		2650	$channel = $CHANNEL{$channel} if $CHANNEL{$channel};
		2651
		2652	if (ref $channel) {
		2653	# send meta info to client, if not yet sent
		2654	unless (exists $self->{channel}{$channel->{id}}) {
		2655	$self->{channel}{$channel->{id}} = $channel;
		2656	$self->ext_msg (channel_info => $channel)
		2657	if $self->can_msg;
		2658	}
		2659
		2660	$channel = $channel->{id};
		2661	}
		2662
		2663	return unless @extra || length $msg;
		2664
		2665	if ($self->can_msg) {
		2666	# default colour, mask it out
		2667	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2668	if $color & cf::NDI_DEF;
		2669
		2670	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2671	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2672	} else {
		2673	if ($color >= 0) {
		2674	# replace some tags by gcfclient-compatible ones
		2675	for ($msg) {
		2676	1 while
		2677	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2678	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2679	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2680	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2681	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2682	}
		2683
		2684	$color &= cf::NDI_COLOR_MASK;
		2685
		2686	utf8::encode $msg;
		2687
		2688	if (0 && $msg =~ /\[/) {
		2689	# COMMAND/INFO
		2690	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2691	} else {
		2692	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2693	$self->send_packet ("drawinfo $color $msg")
		2694	}
		2695	}
		2696	}
		2697	}
		2698
		2699	=item $client->ext_msg ($type, @msg)
		2700
		2701	Sends an ext event to the client.
		2702
		2703	=cut
		2704
		2705	sub cf::client::ext_msg($$@) {
		2706	my ($self, $type, @msg) = @_;
		2707
		2708	if ($self->extcmd == 2) {
		2709	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2710	} elsif ($self->extcmd == 1) { # TODO: remove
		2711	push @msg, msgtype => "event_$type";
		2712	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2713	}
		2714	}
		2715
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	2716	=item $client->ext_reply ($msgid, @msg)
799		2717
800	Sends an ext reply to the player.	2718	Sends an ext reply to the client.
801		2719
802	=cut	2720	=cut
803		2721
804	sub cf::player::ext_reply($$$%) {	2722	sub cf::client::ext_reply($$@) {
805	my ($self, $id, %msg) = @_;	2723	my ($self, $id, @msg) = @_;
806		2724
807	$msg{msgid} = $id;	2725	if ($self->extcmd == 2) {
808		2726	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
809	$self->send ("ext " . to_json \%msg);	2727	} elsif ($self->extcmd == 1) {
		2728	#TODO: version 1, remove
		2729	unshift @msg, msgtype => "reply", msgid => $id;
		2730	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2731	}
810	}	2732	}
		2733
		2734	=item $success = $client->query ($flags, "text", \&cb)
		2735
		2736	Queues a query to the client, calling the given callback with
		2737	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2738	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2739
		2740	Queries can fail, so check the return code. Or don't, as queries will
		2741	become reliable at some point in the future.
		2742
		2743	=cut
		2744
		2745	sub cf::client::query {
		2746	my ($self, $flags, $text, $cb) = @_;
		2747
		2748	return unless $self->state == ST_PLAYING
		2749	|| $self->state == ST_SETUP
		2750	|| $self->state == ST_CUSTOM;
		2751
		2752	$self->state (ST_CUSTOM);
		2753
		2754	utf8::encode $text;
		2755	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2756
		2757	$self->send_packet ($self->{query_queue}[0][0])
		2758	if @{ $self->{query_queue} } == 1;
		2759
		2760	1
		2761	}
		2762
		2763	cf::client->attach (
		2764	on_connect => sub {
		2765	my ($ns) = @_;
		2766
		2767	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2768	},
		2769	on_reply => sub {
		2770	my ($ns, $msg) = @_;
		2771
		2772	# this weird shuffling is so that direct followup queries
		2773	# get handled first
		2774	my $queue = delete $ns->{query_queue}
		2775	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2776
		2777	(shift @$queue)->[1]->($msg);
		2778	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2779
		2780	push @{ $ns->{query_queue} }, @$queue;
		2781
		2782	if (@{ $ns->{query_queue} } == @$queue) {
		2783	if (@$queue) {
		2784	$ns->send_packet ($ns->{query_queue}[0][0]);
		2785	} else {
		2786	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2787	}
		2788	}
		2789	},
		2790	on_exticmd => sub {
		2791	my ($ns, $buf) = @_;
		2792
		2793	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2794
		2795	if (ref $msg) {
		2796	my ($type, $reply, @payload) =
		2797	"ARRAY" eq ref $msg
		2798	? @$msg
		2799	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2800
		2801	my @reply;
		2802
		2803	if (my $cb = $EXTICMD{$type}) {
		2804	@reply = $cb->($ns, @payload);
		2805	}
		2806
		2807	$ns->ext_reply ($reply, @reply)
		2808	if $reply;
		2809
		2810	} else {
		2811	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2812	}
		2813
		2814	cf::override;
		2815	},
		2816	);
		2817
		2818	=item $client->async (\&cb)
		2819
		2820	Create a new coroutine, running the specified callback. The coroutine will
		2821	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2822	or loss of connection).
		2823
		2824	=cut
		2825
		2826	sub cf::client::async {
		2827	my ($self, $cb) = @_;
		2828
		2829	my $coro = &Coro::async ($cb);
		2830
		2831	$coro->on_destroy (sub {
		2832	delete $self->{_coro}{$coro+0};
		2833	});
		2834
		2835	$self->{_coro}{$coro+0} = $coro;
		2836
		2837	$coro
		2838	}
		2839
		2840	cf::client->attach (
		2841	on_destroy => sub {
		2842	my ($ns) = @_;
		2843
		2844	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2845	},
		2846	);
811		2847
812	=back	2848	=back
813		2849
814	=cut
815
816	#############################################################################
817		2850
818	=head2 SAFE SCRIPTING	2851	=head2 SAFE SCRIPTING
819		2852
820	Functions that provide a safe environment to compile and execute	2853	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	2854	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	2855	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	2856	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	2857	functions and methods that can be called is greatly reduced.
825		2858
826	=cut	2859	=cut
827		2860
828	our $safe = new Safe "safe";	2861	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	2862	our $safe_hole = new Safe::Hole;
830		2863
831	$SIG{FPE} = 'IGNORE';	2864	$SIG{FPE} = 'IGNORE';
832		2865
833	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2866	$safe->permit_only (Opcode::opset qw(
		2867	:base_core :base_mem :base_orig :base_math
		2868	grepstart grepwhile mapstart mapwhile
		2869	sort time
		2870	));
834		2871
835	# here we export the classes and methods available to script code	2872	# here we export the classes and methods available to script code
836		2873
837	=pod	2874	=pod
838		2875
839	The following fucntions and emthods are available within a safe environment:	2876	The following functions and methods are available within a safe environment:
840		2877
841	cf::object contr pay_amount pay_player	2878	cf::object
		2879	contr pay_amount pay_player map x y force_find force_add
		2880	insert remove name archname title slaying race decrease_ob_nr
		2881
842	cf::object::player player	2882	cf::object::player
843	cf::player peaceful	2883	player
		2884
		2885	cf::player
		2886	peaceful
		2887
		2888	cf::map
		2889	trigger
844		2890
845	=cut	2891	=cut
846		2892
847	for (	2893	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	2894	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2895	insert remove inv name archname title slaying race
		2896	decrease_ob_nr)],
849	["cf::object::player" => qw(player)],	2897	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	2898	["cf::player" => qw(peaceful)],
		2899	["cf::map" => qw(trigger)],
851	) {	2900	) {
852	no strict 'refs';	2901	no strict 'refs';
853	my ($pkg, @funs) = @$_;	2902	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2903	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	2904	for @funs;
…		…
923	=back	2972	=back
924		2973
925	=cut	2974	=cut
926		2975
927	#############################################################################	2976	#############################################################################
		2977	# the server's init and main functions
928		2978
929	=head2 EXTENSION DATABASE SUPPORT	2979	sub load_facedata($) {
		2980	my ($path) = @_;
930		2981
931	Crossfire maintains a very simple database for extension use. It can	2982	# HACK to clear player env face cache, we need some signal framework
932	currently store anything that can be serialised using Storable, which	2983	# for this (global event?)
933	excludes objects.	2984	%ext::player_env::MUSIC_FACE_CACHE = ();
934		2985
935	The parameter C<$family> should best start with the name of the extension	2986	my $enc = JSON::XS->new->utf8->canonical->relaxed;
936	using it, it should be unique.
937		2987
938	=over 4	2988	warn "loading facedata from $path\n";
939		2989
940	=item $hashref = cf::db_get $family	2990	my $facedata;
		2991	0 < aio_load $path, $facedata
		2992	or die "$path: $!";
941		2993
942	Return a hashref for use by the extension C<$family>, which can be	2994	$facedata = Coro::Storable::thaw $facedata;
943	modified. After modifications, you have to call C<cf::db_dirty> or
944	C<cf::db_sync>.
945		2995
946	=item $value = cf::db_get $family => $key	2996	$facedata->{version} == 2
		2997	or cf::cleanup "$path: version mismatch, cannot proceed.";
947		2998
948	Returns a single value from the database	2999	# patch in the exptable
949		3000	$facedata->{resource}{"res/exp_table"} = {
950	=item cf::db_put $family => $hashref	3001	type => FT_RSRC,
951		3002	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
952	Stores the given family hashref into the database. Updates are delayed, if
953	you want the data to be synced to disk immediately, use C<cf::db_sync>.
954
955	=item cf::db_put $family => $key => $value
956
957	Stores the given C<$value> in the family hash. Updates are delayed, if you
958	want the data to be synced to disk immediately, use C<cf::db_sync>.
959
960	=item cf::db_dirty
961
962	Marks the database as dirty, to be updated at a later time.
963
964	=item cf::db_sync
965
966	Immediately write the database to disk I<if it is dirty>.
967
968	=cut
969
970	{
971	my $db;
972	my $path = cf::localdir . "/database.pst";
973
974	sub db_load() {
975	warn "loading database $path\n";#d# remove later
976	$db = stat $path ? Storable::retrieve $path : { };
977	}
978
979	my $pid;
980
981	sub db_save() {
982	warn "saving database $path\n";#d# remove later
983	waitpid $pid, 0 if $pid;
984	if (0 == ($pid = fork)) {
985	$db->{_meta}{version} = 1;
986	Storable::nstore $db, "$path~";
987	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;
989	}
990	}
991
992	my $dirty;
993
994	sub db_sync() {
995	db_save if $dirty;
996	undef $dirty;
997	}
998
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1000	db_sync;
1001	});	3003	};
		3004	cf::cede_to_tick;
1002		3005
1003	sub db_dirty() {
1004	$dirty = 1;
1005	$idle->start;
1006	}	3006	{
		3007	my $faces = $facedata->{faceinfo};
1007		3008
1008	sub db_get($;$) {	3009	while (my ($face, $info) = each %$faces) {
1009	@_ >= 2	3010	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1010	? $db->{$_[0]}{$_[1]}	3011	cf::face::set_visibility $idx, $info->{visibility};
1011	: ($db->{$_[0]} ||= { })	3012	cf::face::set_magicmap $idx, $info->{magicmap};
1012	}	3013	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3014	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1013		3015
1014	sub db_put($$;$) {	3016	cf::cede_to_tick;
1015	if (@_ >= 3) {
1016	$db->{$_[0]}{$_[1]} = $_[2];
1017	} else {
1018	$db->{$_[0]} = $_[1];
1019	}
1020	db_dirty;
1021	}
1022
1023	attach_global
1024	prio => 10000,
1025	on_cleanup => sub {
1026	db_sync;
1027	},	3017	}
		3018
		3019	while (my ($face, $info) = each %$faces) {
		3020	next unless $info->{smooth};
		3021	my $idx = cf::face::find $face
		3022	or next;
		3023	if (my $smooth = cf::face::find $info->{smooth}) {
		3024	cf::face::set_smooth $idx, $smooth;
		3025	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3026	} else {
		3027	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3028	}
		3029
		3030	cf::cede_to_tick;
		3031	}
1028	;	3032	}
1029	}
1030		3033
1031	#############################################################################	3034	{
1032	# the server's main()	3035	my $anims = $facedata->{animinfo};
1033		3036
1034	sub cfg_load {	3037	while (my ($anim, $info) = each %$anims) {
		3038	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3039	cf::cede_to_tick;
		3040	}
		3041
		3042	cf::anim::invalidate_all; # d'oh
		3043	}
		3044
		3045	{
		3046	# TODO: for gcfclient pleasure, we should give resources
		3047	# that gcfclient doesn't grok a >10000 face index.
		3048	my $res = $facedata->{resource};
		3049
		3050	my $soundconf = delete $res->{"res/sound.conf"};
		3051
		3052	while (my ($name, $info) = each %$res) {
		3053	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3054	my $data;
		3055
		3056	if ($info->{type} & 1) {
		3057	# prepend meta info
		3058
		3059	my $meta = $enc->encode ({
		3060	name => $name,
		3061	%{ $info->{meta} || {} },
		3062	});
		3063
		3064	$data = pack "(w/a*)*", $meta, $info->{data};
		3065	} else {
		3066	$data = $info->{data};
		3067	}
		3068
		3069	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3070	cf::face::set_type $idx, $info->{type};
		3071
		3072	cf::cede_to_tick;
		3073	}
		3074
		3075	if ($soundconf) {
		3076	$soundconf = $enc->decode (delete $soundconf->{data});
		3077
		3078	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3079	my $sound = $soundconf->{compat}[$_]
		3080	or next;
		3081
		3082	my $face = cf::face::find "sound/$sound->[1]";
		3083	cf::sound::set $sound->[0] => $face;
		3084	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3085	}
		3086
		3087	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3088	my $face = cf::face::find "sound/$v";
		3089	cf::sound::set $k => $face;
		3090	}
		3091	}
		3092	}
		3093
		3094	1
		3095	}
		3096
		3097	register_exticmd fx_want => sub {
		3098	my ($ns, $want) = @_;
		3099
		3100	while (my ($k, $v) = each %$want) {
		3101	$ns->fx_want ($k, $v);
		3102	}
		3103	};
		3104
		3105	sub reload_regions {
		3106	# HACK to clear player env face cache, we need some signal framework
		3107	# for this (global event?)
		3108	%ext::player_env::MUSIC_FACE_CACHE = ();
		3109
		3110	load_resource_file "$MAPDIR/regions"
		3111	or die "unable to load regions file\n";
		3112
		3113	for (cf::region::list) {
		3114	$_->{match} = qr/$_->{match}/
		3115	if exists $_->{match};
		3116	}
		3117	}
		3118
		3119	sub reload_facedata {
		3120	load_facedata "$DATADIR/facedata"
		3121	or die "unable to load facedata\n";
		3122	}
		3123
		3124	sub reload_archetypes {
		3125	load_resource_file "$DATADIR/archetypes"
		3126	or die "unable to load archetypes\n";
		3127	#d# NEED to laod twice to resolve forward references
		3128	# this really needs to be done in an extra post-pass
		3129	# (which needs to be synchronous, so solve it differently)
		3130	load_resource_file "$DATADIR/archetypes"
		3131	or die "unable to load archetypes\n";
		3132	}
		3133
		3134	sub reload_treasures {
		3135	load_resource_file "$DATADIR/treasures"
		3136	or die "unable to load treasurelists\n";
		3137	}
		3138
		3139	sub reload_resources {
		3140	warn "reloading resource files...\n";
		3141
		3142	reload_regions;
		3143	reload_facedata;
		3144	#reload_archetypes;#d#
		3145	reload_archetypes;
		3146	reload_treasures;
		3147
		3148	warn "finished reloading resource files\n";
		3149	}
		3150
		3151	sub init {
		3152	reload_resources;
		3153	}
		3154
		3155	sub reload_config {
1035	open my $fh, "<:utf8", cf::confdir . "/config"	3156	open my $fh, "<:utf8", "$CONFDIR/config"
1036	or return;	3157	or return;
1037		3158
1038	local $/;	3159	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;	3160	*CFG = YAML::Syck::Load <$fh>;
		3161
		3162	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3163
		3164	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3165	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3166
		3167	if (exists $CFG{mlockall}) {
		3168	eval {
		3169	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3170	and die "WARNING: m(un)lockall failed: $!\n";
		3171	};
		3172	warn $@ if $@;
		3173	}
1040	}	3174	}
1041		3175
1042	sub main {	3176	sub main {
1043	cfg_load;	3177	# we must not ever block the main coroutine
1044	db_load;	3178	local $Coro::idle = sub {
		3179	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3180	(async {
		3181	Event::one_event;
		3182	})->prio (Coro::PRIO_MAX);
		3183	};
		3184
		3185	reload_config;
		3186	db_init;
1045	load_extensions;	3187	load_extensions;
		3188
		3189	$TICK_WATCHER->start;
1046	Event::loop;	3190	Event::loop;
1047	}	3191	}
1048		3192
1049	#############################################################################	3193	#############################################################################
1050	# initialisation	3194	# initialisation and cleanup
1051		3195
1052	sub _perl_reload(&) {	3196	# install some emergency cleanup handlers
		3197	BEGIN {
		3198	for my $signal (qw(INT HUP TERM)) {
		3199	Event->signal (
		3200	reentrant => 0,
		3201	data => WF_AUTOCANCEL,
		3202	signal => $signal,
		3203	prio => 0,
		3204	cb => sub {
		3205	cf::cleanup "SIG$signal";
		3206	},
		3207	);
		3208	}
		3209	}
		3210
		3211	sub write_runtime {
		3212	my $runtime = "$LOCALDIR/runtime";
		3213
		3214	# first touch the runtime file to show we are still running:
		3215	# the fsync below can take a very very long time.
		3216
		3217	IO::AIO::aio_utime $runtime, undef, undef;
		3218
		3219	my $guard = cf::lock_acquire "write_runtime";
		3220
		3221	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3222	or return;
		3223
		3224	my $value = $cf::RUNTIME + 90 + 10;
		3225	# 10 is the runtime save interval, for a monotonic clock
		3226	# 60 allows for the watchdog to kill the server.
		3227
		3228	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3229	and return;
		3230
		3231	# always fsync - this file is important
		3232	aio_fsync $fh
		3233	and return;
		3234
		3235	# touch it again to show we are up-to-date
		3236	aio_utime $fh, undef, undef;
		3237
		3238	close $fh
		3239	or return;
		3240
		3241	aio_rename "$runtime~", $runtime
		3242	and return;
		3243
		3244	warn "runtime file written.\n";
		3245
		3246	1
		3247	}
		3248
		3249	sub emergency_save() {
		3250	my $freeze_guard = cf::freeze_mainloop;
		3251
		3252	warn "enter emergency perl save\n";
		3253
		3254	cf::sync_job {
		3255	# use a peculiar iteration method to avoid tripping on perl
		3256	# refcount bugs in for. also avoids problems with players
		3257	# and maps saved/destroyed asynchronously.
		3258	warn "begin emergency player save\n";
		3259	for my $login (keys %cf::PLAYER) {
		3260	my $pl = $cf::PLAYER{$login} or next;
		3261	$pl->valid or next;
		3262	$pl->save;
		3263	}
		3264	warn "end emergency player save\n";
		3265
		3266	warn "begin emergency map save\n";
		3267	for my $path (keys %cf::MAP) {
		3268	my $map = $cf::MAP{$path} or next;
		3269	$map->valid or next;
		3270	$map->save;
		3271	}
		3272	warn "end emergency map save\n";
		3273
		3274	warn "begin emergency database checkpoint\n";
		3275	BDB::db_env_txn_checkpoint $DB_ENV;
		3276	warn "end emergency database checkpoint\n";
		3277	};
		3278
		3279	warn "leave emergency perl save\n";
		3280	}
		3281
		3282	sub post_cleanup {
1053	my ($msg) = @_;	3283	my ($make_core) = @_;
1054		3284
1055	$msg->("reloading...");	3285	warn Carp::longmess "post_cleanup backtrace"
		3286	if $make_core;
		3287	}
1056		3288
1057	eval {	3289	sub do_reload_perl() {
1058	# cancel all watchers	3290	# can/must only be called in main
		3291	if ($Coro::current != $Coro::main) {
		3292	warn "can only reload from main coroutine";
		3293	return;
		3294	}
		3295
		3296	warn "reloading...";
		3297
		3298	warn "entering sync_job";
		3299
		3300	cf::sync_job {
		3301	cf::write_runtime; # external watchdog should not bark
		3302	cf::emergency_save;
		3303	cf::write_runtime; # external watchdog should not bark
		3304
		3305	warn "syncing database to disk";
		3306	BDB::db_env_txn_checkpoint $DB_ENV;
		3307
		3308	# if anything goes wrong in here, we should simply crash as we already saved
		3309
		3310	warn "cancelling all WF_AUTOCANCEL watchers";
1059	$_->cancel for Event::all_watchers;	3311	for (Event::all_watchers) {
		3312	$_->cancel if $_->data & WF_AUTOCANCEL;
		3313	}
1060		3314
1061	# unload all extensions	3315	warn "flushing outstanding aio requests";
1062	for (@exts) {	3316	for (;;) {
1063	$msg->("unloading <$_>");	3317	BDB::flush;
1064	unload_extension $_;	3318	IO::AIO::flush;
		3319	Coro::cede;
		3320	last unless IO::AIO::nreqs || BDB::nreqs;
		3321	warn "iterate...";
		3322	}
		3323
		3324	++$RELOAD;
		3325
		3326	warn "cancelling all extension coros";
		3327	$_->cancel for values %EXT_CORO;
		3328	%EXT_CORO = ();
		3329
		3330	warn "removing commands";
		3331	%COMMAND = ();
		3332
		3333	warn "removing ext/exti commands";
		3334	%EXTCMD = ();
		3335	%EXTICMD = ();
		3336
		3337	warn "unloading/nuking all extensions";
		3338	for my $pkg (@EXTS) {
		3339	warn "... unloading $pkg";
		3340
		3341	if (my $cb = $pkg->can ("unload")) {
		3342	eval {
		3343	$cb->($pkg);
		3344	1
		3345	} or warn "$pkg unloaded, but with errors: $@";
1065	}	3346	}
1066		3347
		3348	warn "... nuking $pkg";
		3349	Symbol::delete_package $pkg;
		3350	}
		3351
1067	# unload all modules loaded from $LIBDIR	3352	warn "unloading all perl modules loaded from $LIBDIR";
1068	while (my ($k, $v) = each %INC) {	3353	while (my ($k, $v) = each %INC) {
1069	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3354	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1070		3355
1071	$msg->("removing <$k>");	3356	warn "... unloading $k";
1072	delete $INC{$k};	3357	delete $INC{$k};
1073		3358
1074	$k =~ s/\.pm$//;	3359	$k =~ s/\.pm$//;
1075	$k =~ s/\//::/g;	3360	$k =~ s/\//::/g;
1076		3361
…		…
1079	}	3364	}
1080		3365
1081	Symbol::delete_package $k;	3366	Symbol::delete_package $k;
1082	}	3367	}
1083		3368
1084	# sync database to disk
1085	cf::db_sync;
1086
1087	# get rid of safe::, as good as possible	3369	warn "getting rid of safe::, as good as possible";
1088	Symbol::delete_package "safe::$_"	3370	Symbol::delete_package "safe::$_"
1089	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3371	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1090		3372
1091	# remove register_script_function callbacks
1092	# TODO
1093
1094	# unload cf.pm "a bit"	3373	warn "unloading cf.pm \"a bit\"";
1095	delete $INC{"cf.pm"};	3374	delete $INC{"cf.pm"};
		3375	delete $INC{"cf/pod.pm"};
1096		3376
1097	# don't, removes xs symbols, too,	3377	# don't, removes xs symbols, too,
1098	# and global variables created in xs	3378	# and global variables created in xs
1099	#Symbol::delete_package __PACKAGE__;	3379	#Symbol::delete_package __PACKAGE__;
1100		3380
1101	# reload cf.pm	3381	warn "unload completed, starting to reload now";
		3382
1102	$msg->("reloading cf.pm");	3383	warn "reloading cf.pm";
1103	require cf;	3384	require cf;
		3385	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1104		3386
1105	# load config and database again	3387	warn "loading config and database again";
1106	cf::cfg_load;	3388	cf::reload_config;
1107	cf::db_load;
1108		3389
1109	# load extensions	3390	warn "loading extensions";
1110	$msg->("load extensions");
1111	cf::load_extensions;	3391	cf::load_extensions;
1112		3392
1113	# reattach attachments to objects	3393	warn "reattaching attachments to objects/players";
1114	$msg->("reattach");	3394	_global_reattach; # objects, sockets
1115	_global_reattach;	3395	warn "reattaching attachments to maps";
		3396	reattach $_ for values %MAP;
		3397	warn "reattaching attachments to players";
		3398	reattach $_ for values %PLAYER;
		3399
		3400	warn "leaving sync_job";
		3401
		3402	1
		3403	} or do {
		3404	warn $@;
		3405	warn "error while reloading, exiting.";
		3406	exit 1;
1116	};	3407	};
1117	$msg->($@) if $@;
1118		3408
1119	$msg->("reloaded");	3409	warn "reloaded";
1120	};	3410	};
1121		3411
1122	sub perl_reload() {	3412	our $RELOAD_WATCHER; # used only during reload
1123	_perl_reload {	3413
1124	warn $_[0];	3414	sub reload_perl() {
1125	print "$_[0]\n";	3415	# doing reload synchronously and two reloads happen back-to-back,
		3416	# coro crashes during coro_state_free->destroy here.
		3417
		3418	$RELOAD_WATCHER ||= Event->timer (
		3419	reentrant => 0,
		3420	after => 0,
		3421	data => WF_AUTOCANCEL,
		3422	cb => sub {
		3423	do_reload_perl;
		3424	undef $RELOAD_WATCHER;
		3425	},
1126	};	3426	);
1127	}	3427	}
1128		3428
1129	register_command "perl-reload", 0, sub {	3429	register_command "reload" => sub {
1130	my ($who, $arg) = @_;	3430	my ($who, $arg) = @_;
1131		3431
1132	if ($who->flag (FLAG_WIZ)) {	3432	if ($who->flag (FLAG_WIZ)) {
1133	_perl_reload {	3433	$who->message ("reloading server.");
1134	warn $_[0];	3434	async { reload_perl };
1135	$who->message ($_[0]);
1136	};
1137	}	3435	}
1138	};	3436	};
1139		3437
1140	register "<global>", __PACKAGE__;
1141
1142	unshift @INC, $LIBDIR;	3438	unshift @INC, $LIBDIR;
1143		3439
		3440	my $bug_warning = 0;
		3441
		3442	our @WAIT_FOR_TICK;
		3443	our @WAIT_FOR_TICK_BEGIN;
		3444
		3445	sub wait_for_tick {
		3446	return unless $TICK_WATCHER->is_active;
		3447	return if $Coro::current == $Coro::main;
		3448
		3449	my $signal = new Coro::Signal;
		3450	push @WAIT_FOR_TICK, $signal;
		3451	$signal->wait;
		3452	}
		3453
		3454	sub wait_for_tick_begin {
		3455	return unless $TICK_WATCHER->is_active;
		3456	return if $Coro::current == $Coro::main;
		3457
		3458	my $signal = new Coro::Signal;
		3459	push @WAIT_FOR_TICK_BEGIN, $signal;
		3460	$signal->wait;
		3461	}
		3462
		3463	our $stat_fh;
		3464	sysopen $stat_fh, "/tmp/cfstats", Fcntl::O_APPEND | Fcntl::O_CREAT | Fcntl::O_WRONLY, 0600;#d#
		3465
1144	$TICK_WATCHER = Event->timer (	3466	$TICK_WATCHER = Event->timer (
		3467	reentrant => 0,
		3468	parked => 1,
1145	prio => 1,	3469	prio => 0,
1146	at => $NEXT_TICK || 1,	3470	at => $NEXT_TICK || $TICK,
		3471	data => WF_AUTOCANCEL,
1147	cb => sub {	3472	cb => sub {
		3473	if ($Coro::current != $Coro::main) {
		3474	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3475	unless ++$bug_warning > 10;
		3476	return;
		3477	}
		3478
		3479	my @pl = cf::player::list; my $stats = sprintf "%.2f %d %d %d", $RUNTIME, (scalar @pl), cf::object::actives_size, cf::object::objects_size; #d#
		3480
		3481	$NOW = $tick_start = Event::time;
		3482
1148	cf::server_tick; # one server iteration	3483	cf::server_tick; # one server iteration
1149		3484
1150	my $NOW = Event::time;	3485	$RUNTIME += $TICK;
1151	$NEXT_TICK += $TICK;	3486	$NEXT_TICK += $TICK;
1152		3487
		3488	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3489	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3490	Coro::async_pool {
		3491	write_runtime
		3492	or warn "ERROR: unable to write runtime file: $!";
		3493	};
		3494	}
		3495
		3496	# my $AFTER = Event::time;
		3497	# warn $AFTER - $NOW;#d#
		3498
		3499	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3500	$sig->send;
		3501	}
		3502	while (my $sig = shift @WAIT_FOR_TICK) {
		3503	$sig->send;
		3504	}
		3505
		3506	$NOW = Event::time;
		3507
1153	# if we are delayed by four ticks, skip them all	3508	# if we are delayed by four ticks or more, skip them all
1154	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3509	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1155		3510
1156	$TICK_WATCHER->at ($NEXT_TICK);	3511	$TICK_WATCHER->at ($NEXT_TICK);
1157	$TICK_WATCHER->start;	3512	$TICK_WATCHER->start;
		3513
		3514	$LOAD = ($NOW - $tick_start) / $TICK;
		3515	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3516
		3517	_post_tick;
		3518
		3519	# gather some statistics#d#
		3520	$stats .= sprintf " %d\n", 10000 * ($NOW - $tick_start);#d#
		3521	IO::AIO::aio_write $stat_fh, undef, undef, $stats, 0;#d#
1158	},	3522	},
1159	);	3523	);
1160		3524
		3525	{
		3526	BDB::min_parallel 8;
		3527	BDB::max_poll_time $TICK * 0.1;
		3528	$BDB_POLL_WATCHER = Event->io (
		3529	reentrant => 0,
		3530	fd => BDB::poll_fileno,
		3531	poll => 'r',
		3532	prio => 0,
		3533	data => WF_AUTOCANCEL,
		3534	cb => \&BDB::poll_cb,
		3535	);
		3536
		3537	BDB::set_sync_prepare {
		3538	my $status;
		3539	my $current = $Coro::current;
		3540	(
		3541	sub {
		3542	$status = $!;
		3543	$current->ready; undef $current;
		3544	},
		3545	sub {
		3546	Coro::schedule while defined $current;
		3547	$! = $status;
		3548	},
		3549	)
		3550	};
		3551
		3552	unless ($DB_ENV) {
		3553	$DB_ENV = BDB::db_env_create;
		3554
		3555	cf::sync_job {
		3556	eval {
		3557	BDB::db_env_open
		3558	$DB_ENV,
		3559	$BDBDIR,
		3560	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3561	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3562	0666;
		3563
		3564	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3565
		3566	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC
		3567	| BDB::LOG_AUTOREMOVE, 1);
		3568	$DB_ENV->set_lk_detect;
		3569	};
		3570
		3571	cf::cleanup "db_env_open(db): $@" if $@;
		3572	};
		3573	}
		3574
		3575	$BDB_CHECKPOINT_WATCHER = Event->timer (
		3576	after => 11,
		3577	interval => 60,
		3578	hard => 1,
		3579	prio => 0,
		3580	data => WF_AUTOCANCEL,
		3581	cb => sub {
		3582	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3583	},
		3584	);
		3585	$BDB_TRICKLE_WATCHER = Event->timer (
		3586	after => 5,
		3587	interval => 10,
		3588	hard => 1,
		3589	prio => 0,
		3590	data => WF_AUTOCANCEL,
		3591	cb => sub {
		3592	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3593	},
		3594	);
		3595	}
		3596
		3597	{
		3598	IO::AIO::min_parallel 8;
		3599
		3600	undef $Coro::AIO::WATCHER;
		3601	IO::AIO::max_poll_time $TICK * 0.1;
		3602	$AIO_POLL_WATCHER = Event->io (
		3603	reentrant => 0,
		3604	data => WF_AUTOCANCEL,
		3605	fd => IO::AIO::poll_fileno,
		3606	poll => 'r',
		3607	prio => 6,
		3608	cb => \&IO::AIO::poll_cb,
		3609	);
		3610	}
		3611
		3612	my $_log_backtrace;
		3613
		3614	sub _log_backtrace {
		3615	my ($msg, @addr) = @_;
		3616
		3617	$msg =~ s/\n//;
		3618
		3619	# limit the # of concurrent backtraces
		3620	if ($_log_backtrace < 2) {
		3621	++$_log_backtrace;
		3622	async {
		3623	my @bt = fork_call {
		3624	@addr = map { sprintf "%x", $_ } @addr;
		3625	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3626	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3627	or die "addr2line: $!";
		3628
		3629	my @funcs;
		3630	my @res = <$fh>;
		3631	chomp for @res;
		3632	while (@res) {
		3633	my ($func, $line) = splice @res, 0, 2, ();
		3634	push @funcs, "[$func] $line";
		3635	}
		3636
		3637	@funcs
		3638	};
		3639
		3640	LOG llevInfo, "[ABT] $msg\n";
		3641	LOG llevInfo, "[ABT] $_\n" for @bt;
		3642	--$_log_backtrace;
		3643	};
		3644	} else {
		3645	LOG llevInfo, "[ABT] $msg\n";
		3646	LOG llevInfo, "[ABT] [suppressed]\n";
		3647	}
		3648	}
		3649
		3650	# load additional modules
		3651	use cf::pod;
		3652
		3653	END { cf::emergency_save }
		3654
1161	1	3655	1
1162		3656

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