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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.84 by root, Mon Dec 11 02:54:57 2006 UTC vs.
Revision 1.456 by root, Tue Sep 30 04:00:35 2008 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify
		7	# it under the terms of the GNU General Public License as published by
		8	# the Free Software Foundation, either version 3 of the License, or
		9	# (at your option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the GNU General Public License
		17	# along with this program. If not, see <http://www.gnu.org/licenses/>.
		18	#
		19	# The authors can be reached via e-mail to <support@deliantra.net>
		20	#
		21
1	package cf;	22	package cf;
		23
		24	use 5.10.0;
		25	use utf8;
		26	use strict "vars", "subs";
2		27
3	use Symbol;	28	use Symbol;
4	use List::Util;	29	use List::Util;
5	use Storable;	30	use Socket;
		31	use EV;
6	use Opcode;	32	use Opcode;
7	use Safe;	33	use Safe;
8	use Safe::Hole;	34	use Safe::Hole;
		35	use Storable ();
9		36
		37	use Coro ();
		38	use Coro::State;
		39	use Coro::Handle;
		40	use Coro::EV;
		41	use Coro::AnyEvent;
		42	use Coro::Timer;
		43	use Coro::Signal;
		44	use Coro::Semaphore;
		45	use Coro::AnyEvent;
		46	use Coro::AIO;
		47	use Coro::BDB 1.6;
		48	use Coro::Storable;
		49	use Coro::Util ();
		50
		51	use JSON::XS 2.01 ();
		52	use BDB ();
		53	use Data::Dumper;
		54	use Digest::MD5;
		55	use Fcntl;
		56	use YAML ();
10	use IO::AIO ();	57	use IO::AIO ();
11	use YAML::Syck ();
12	use Time::HiRes;	58	use Time::HiRes;
13	use Event;	59	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	60	use Digest::MD5 ();
15		61
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	62	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		63
19	use strict;	64	# configure various modules to our taste
		65	#
		66	$Storable::canonical = 1; # reduce rsync transfers
		67	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
20		68
21	_init_vars;	69	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
22		70
		71	# make sure c-lzf reinitialises itself
		72	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		73	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		74
		75	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		76
23	our %COMMAND = ();	77	our %COMMAND = ();
		78	our %COMMAND_TIME = ();
		79
		80	our @EXTS = (); # list of extension package names
		81	our %EXTCMD = ();
		82	our %EXTICMD = ();
		83	our %EXT_CORO = (); # coroutines bound to extensions
		84	our %EXT_MAP = (); # pluggable maps
		85
		86	our $RELOAD; # number of reloads so far, non-zero while in reload
24	our @EVENT;	87	our @EVENT;
25	our $LIBDIR = maps_directory "perl";
26		88
27	our $TICK = MAX_TIME * 1e-6;	89	our $CONFDIR = confdir;
28	our $TICK_WATCHER;	90	our $DATADIR = datadir;
		91	our $LIBDIR = "$DATADIR/ext";
		92	our $PODDIR = "$DATADIR/pod";
		93	our $MAPDIR = "$DATADIR/" . mapdir;
		94	our $LOCALDIR = localdir;
		95	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		96	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		97	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		98	our $RANDOMDIR = "$LOCALDIR/random";
		99	our $BDBDIR = "$LOCALDIR/db";
		100	our $PIDFILE = "$LOCALDIR/pid";
		101	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		102
		103	our %RESOURCE;
		104
		105	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		106	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
29	our $NEXT_TICK;	107	our $NEXT_TICK;
		108	our $USE_FSYNC = 1; # use fsync to write maps - default off
		109
		110	our $BDB_DEADLOCK_WATCHER;
		111	our $BDB_CHECKPOINT_WATCHER;
		112	our $BDB_TRICKLE_WATCHER;
		113	our $DB_ENV;
30		114
31	our %CFG;	115	our %CFG;
32		116
33	our $UPTIME; $UPTIME ||= time;	117	our $UPTIME; $UPTIME ||= time;
		118	our $RUNTIME;
		119	our $NOW;
		120
		121	our (%PLAYER, %PLAYER_LOADING); # all users
		122	our (%MAP, %MAP_LOADING ); # all maps
		123	our $LINK_MAP; # the special {link} map, which is always available
		124
		125	# used to convert map paths into valid unix filenames by replacing / by ∕
		126	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		127
		128	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		129	our $LOADAVG; # same thing, but with alpha-smoothing
		130	our $JITTER; # average jitter
		131	our $TICK_START; # for load detecting purposes
		132
		133	our @POST_INIT;
		134
		135	binmode STDOUT;
		136	binmode STDERR;
		137
		138	# read virtual server time, if available
		139	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		140	open my $fh, "<", $RUNTIMEFILE
		141	or die "unable to read $RUNTIMEFILE file: $!";
		142	$RUNTIME = <$fh> + 0.;
		143	}
		144
		145	mkdir $_
		146	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		147
		148	our $EMERGENCY_POSITION;
		149
		150	sub cf::map::normalise;
34		151
35	#############################################################################	152	#############################################################################
36		153
37	=head2 GLOBAL VARIABLES	154	=head2 GLOBAL VARIABLES
38		155
…		…
40		157
41	=item $cf::UPTIME	158	=item $cf::UPTIME
42		159
43	The timestamp of the server start (so not actually an uptime).	160	The timestamp of the server start (so not actually an uptime).
44		161
45	=item $cf::LIBDIR	162	=item $cf::RUNTIME
46		163
47	The perl library directory, where extensions and cf-specific modules can	164	The time this server has run, starts at 0 and is increased by $cf::TICK on
48	be found. It will be added to C<@INC> automatically.	165	every server tick.
		166
		167	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		168	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		169	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		170
		171	Various directories - "/etc", read-only install directory, perl-library
		172	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		173	unique-items directory, player file directory, random maps directory and
		174	database environment.
		175
		176	=item $cf::NOW
		177
		178	The time of the last (current) server tick.
49		179
50	=item $cf::TICK	180	=item $cf::TICK
51		181
52	The interval between server ticks, in seconds.	182	The interval between server ticks, in seconds.
53		183
		184	=item $cf::LOADAVG
		185
		186	The current CPU load on the server (alpha-smoothed), as a value between 0
		187	(none) and 1 (overloaded), indicating how much time is spent on processing
		188	objects per tick. Healthy values are < 0.5.
		189
		190	=item $cf::LOAD
		191
		192	The raw value load value from the last tick.
		193
54	=item %cf::CFG	194	=item %cf::CFG
55		195
56	Configuration for the server, loaded from C</etc/crossfire/config>, or	196	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
57	from wherever your confdir points to.	197	from wherever your confdir points to.
		198
		199	=item cf::wait_for_tick, cf::wait_for_tick_begin
		200
		201	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		202	returns directly I<after> the tick processing (and consequently, can only wake one process
		203	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		204
		205	=item @cf::INVOKE_RESULTS
		206
		207	This array contains the results of the last C<invoke ()> call. When
		208	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		209	that call.
58		210
59	=back	211	=back
60		212
61	=cut	213	=cut
62		214
63	BEGIN {	215	BEGIN {
64	*CORE::GLOBAL::warn = sub {	216	*CORE::GLOBAL::warn = sub {
65	my $msg = join "", @_;	217	my $msg = join "", @_;
		218
66	$msg .= "\n"	219	$msg .= "\n"
67	unless $msg =~ /\n$/;	220	unless $msg =~ /\n$/;
68		221
69	print STDERR "cfperl: $msg";	222	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		223
70	LOG llevError, "cfperl: $msg";	224	LOG llevError, $msg;
71	};	225	};
72	}	226	}
73		227
		228	$Coro::State::DIEHOOK = sub {
		229	return unless $^S eq 0; # "eq", not "=="
		230
		231	if ($Coro::current == $Coro::main) {#d#
		232	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		233	return;#d#
		234	}#d#
		235
		236	# kill coroutine otherwise
		237	warn Carp::longmess $_[0];
		238	Coro::terminate
		239	};
		240
		241	$SIG{__DIE__} = sub { }; #d#?
		242
		243	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		244	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		245	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		246	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		247	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		248	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
74	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	249	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
75		250
76	# we bless all objects into (empty) derived classes to force a method lookup	251	# we bless all objects into (empty) derived classes to force a method lookup
77	# within the Safe compartment.	252	# within the Safe compartment.
78	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	253	for my $pkg (qw(
79	no strict 'refs';	254	cf::global cf::attachable
		255	cf::object cf::object::player
		256	cf::client cf::player
		257	cf::arch cf::living
		258	cf::map cf::mapspace
		259	cf::party cf::region
		260	)) {
80	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	261	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
81	}	262	}
82		263
83	$Event::DIED = sub {	264	$EV::DIED = sub {
84	warn "error in event callback: @_";	265	warn "error in event callback: @_";
85	};	266	};
86		267
87	my %ext_pkg;	268	#############################################################################
88	my @exts;
89	my @hook;
90	my %command;
91	my %extcmd;
92		269
93	=head2 UTILITY FUNCTIONS	270	=head2 UTILITY FUNCTIONS
94		271
95	=over 4	272	=over 4
96		273
97	=cut	274	=item dumpval $ref
98		275
99	use JSON::Syck (); # TODO# replace by JSON::PC once working	276	=cut
100		277
		278	sub dumpval {
		279	eval {
		280	local $SIG{__DIE__};
		281	my $d;
		282	if (1) {
		283	$d = new Data::Dumper([$_[0]], ["*var"]);
		284	$d->Terse(1);
		285	$d->Indent(2);
		286	$d->Quotekeys(0);
		287	$d->Useqq(1);
		288	#$d->Bless(...);
		289	$d->Seen($_[1]) if @_ > 1;
		290	$d = $d->Dump();
		291	}
		292	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		293	$d
		294	} || "[unable to dump $_[0]: '$@']";
		295	}
		296
101	=item $ref = cf::from_json $json	297	=item $ref = cf::decode_json $json
102		298
103	Converts a JSON string into the corresponding perl data structure.	299	Converts a JSON string into the corresponding perl data structure.
104		300
105	=cut
106
107	sub from_json($) {
108	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
109	JSON::Syck::Load $_[0]
110	}
111
112	=item $json = cf::to_json $ref	301	=item $json = cf::encode_json $ref
113		302
114	Converts a perl data structure into its JSON representation.	303	Converts a perl data structure into its JSON representation.
115		304
116	=cut	305	=cut
117		306
118	sub to_json($) {	307	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
119	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	308
120	JSON::Syck::Dump $_[0]	309	sub encode_json($) { $json_coder->encode ($_[0]) }
		310	sub decode_json($) { $json_coder->decode ($_[0]) }
		311
		312	=item cf::post_init { BLOCK }
		313
		314	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		315	but I<before> the server starts ticking again.
		316
		317	The cdoeblock will have a single boolean argument to indicate whether this
		318	is a reload or not.
		319
		320	=cut
		321
		322	sub post_init(&) {
		323	push @POST_INIT, shift;
		324	}
		325
		326	=item cf::lock_wait $string
		327
		328	Wait until the given lock is available. See cf::lock_acquire.
		329
		330	=item my $lock = cf::lock_acquire $string
		331
		332	Wait until the given lock is available and then acquires it and returns
		333	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		334	for example when the coroutine gets canceled), the lock is automatically
		335	returned.
		336
		337	Locks are *not* recursive, locking from the same coro twice results in a
		338	deadlocked coro.
		339
		340	Lock names should begin with a unique identifier (for example, cf::map::find
		341	uses map_find and cf::map::load uses map_load).
		342
		343	=item $locked = cf::lock_active $string
		344
		345	Return true if the lock is currently active, i.e. somebody has locked it.
		346
		347	=cut
		348
		349	our %LOCK;
		350	our %LOCKER;#d#
		351
		352	sub lock_wait($) {
		353	my ($key) = @_;
		354
		355	if ($LOCKER{$key} == $Coro::current) {#d#
		356	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		357	return;#d#
		358	}#d#
		359
		360	# wait for lock, if any
		361	while ($LOCK{$key}) {
		362	#local $Coro::current->{desc} = "$Coro::current->{desc} <waiting for lock $key>";
		363	push @{ $LOCK{$key} }, $Coro::current;
		364	Coro::schedule;
		365	}
		366	}
		367
		368	sub lock_acquire($) {
		369	my ($key) = @_;
		370
		371	# wait, to be sure we are not locked
		372	lock_wait $key;
		373
		374	$LOCK{$key} = [];
		375	$LOCKER{$key} = $Coro::current;#d#
		376
		377	Coro::guard {
		378	delete $LOCKER{$key};#d#
		379	# wake up all waiters, to be on the safe side
		380	$_->ready for @{ delete $LOCK{$key} };
		381	}
		382	}
		383
		384	sub lock_active($) {
		385	my ($key) = @_;
		386
		387	! ! $LOCK{$key}
		388	}
		389
		390	sub freeze_mainloop {
		391	tick_inhibit_inc;
		392
		393	Coro::guard \&tick_inhibit_dec;
		394	}
		395
		396	=item cf::periodic $interval, $cb
		397
		398	Like EV::periodic, but randomly selects a starting point so that the actions
		399	get spread over timer.
		400
		401	=cut
		402
		403	sub periodic($$) {
		404	my ($interval, $cb) = @_;
		405
		406	my $start = rand List::Util::min 180, $interval;
		407
		408	EV::periodic $start, $interval, 0, $cb
		409	}
		410
		411	=item cf::get_slot $time[, $priority[, $name]]
		412
		413	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		414	This call blocks and returns only when you have at least C<$time> seconds
		415	of cpu time till the next tick. The slot is only valid till the next cede.
		416
		417	The optional C<$name> can be used to identify the job to run. It might be
		418	used for statistical purposes and should identify the same time-class.
		419
		420	Useful for short background jobs.
		421
		422	=cut
		423
		424	our @SLOT_QUEUE;
		425	our $SLOT_QUEUE;
		426
		427	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		428	$SLOT_QUEUE = Coro::async {
		429	$Coro::current->desc ("timeslot manager");
		430
		431	my $signal = new Coro::Signal;
		432
		433	while () {
		434	next_job:
		435	my $avail = cf::till_tick;
		436	if ($avail > 0.01) {
		437	for (0 .. $#SLOT_QUEUE) {
		438	if ($SLOT_QUEUE[$_][0] < $avail) {
		439	my $job = splice @SLOT_QUEUE, $_, 1, ();
		440	$job->[2]->send;
		441	Coro::cede;
		442	goto next_job;
		443	}
		444	}
		445	}
		446
		447	if (@SLOT_QUEUE) {
		448	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		449	push @cf::WAIT_FOR_TICK, $signal;
		450	$signal->wait;
		451	} else {
		452	Coro::schedule;
		453	}
		454	}
		455	};
		456
		457	sub get_slot($;$$) {
		458	return if tick_inhibit || $Coro::current == $Coro::main;
		459
		460	my ($time, $pri, $name) = @_;
		461
		462	$time = $TICK * .6 if $time > $TICK * .6;
		463	my $sig = new Coro::Signal;
		464
		465	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		466	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		467	$SLOT_QUEUE->ready;
		468	$sig->wait;
		469	}
		470
		471	=item cf::async { BLOCK }
		472
		473	Currently the same as Coro::async_pool, meaning you cannot use
		474	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		475	thing you are allowed to do is call C<prio> on it.
		476
		477	=cut
		478
		479	BEGIN { *async = \&Coro::async_pool }
		480
		481	=item cf::sync_job { BLOCK }
		482
		483	The design of Deliantra requires that the main coroutine ($Coro::main)
		484	is always able to handle events or runnable, as Deliantra is only
		485	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		486	acceptable.
		487
		488	If it must be done, put the blocking parts into C<sync_job>. This will run
		489	the given BLOCK in another coroutine while waiting for the result. The
		490	server will be frozen during this time, so the block should either finish
		491	fast or be very important.
		492
		493	=cut
		494
		495	sub sync_job(&) {
		496	my ($job) = @_;
		497
		498	if ($Coro::current == $Coro::main) {
		499	my $time = EV::time;
		500
		501	# this is the main coro, too bad, we have to block
		502	# till the operation succeeds, freezing the server :/
		503
		504	LOG llevError, Carp::longmess "sync job";#d#
		505
		506	my $freeze_guard = freeze_mainloop;
		507
		508	my $busy = 1;
		509	my @res;
		510
		511	(async {
		512	$Coro::current->desc ("sync job coro");
		513	@res = eval { $job->() };
		514	warn $@ if $@;
		515	undef $busy;
		516	})->prio (Coro::PRIO_MAX);
		517
		518	while ($busy) {
		519	if (Coro::nready) {
		520	Coro::cede_notself;
		521	} else {
		522	EV::loop EV::LOOP_ONESHOT;
		523	}
		524	}
		525
		526	my $time = EV::time - $time;
		527
		528	$TICK_START += $time; # do not account sync jobs to server load
		529
		530	wantarray ? @res : $res[0]
		531	} else {
		532	# we are in another coroutine, how wonderful, everything just works
		533
		534	$job->()
		535	}
		536	}
		537
		538	=item $coro = cf::async_ext { BLOCK }
		539
		540	Like async, but this coro is automatically being canceled when the
		541	extension calling this is being unloaded.
		542
		543	=cut
		544
		545	sub async_ext(&) {
		546	my $cb = shift;
		547
		548	my $coro = &Coro::async ($cb);
		549
		550	$coro->on_destroy (sub {
		551	delete $EXT_CORO{$coro+0};
		552	});
		553	$EXT_CORO{$coro+0} = $coro;
		554
		555	$coro
		556	}
		557
		558	=item fork_call { }, $args
		559
		560	Executes the given code block with the given arguments in a seperate
		561	process, returning the results. Everything must be serialisable with
		562	Coro::Storable. May, of course, block. Note that the executed sub may
		563	never block itself or use any form of event handling.
		564
		565	=cut
		566
		567	sub fork_call(&@) {
		568	my ($cb, @args) = @_;
		569
		570	# we seemingly have to make a local copy of the whole thing,
		571	# otherwise perl prematurely frees the stuff :/
		572	# TODO: investigate and fix (likely this will be rather laborious)
		573
		574	my @res = Coro::Util::fork_eval {
		575	reset_signals;
		576	&$cb
		577	}, @args;
		578
		579	wantarray ? @res : $res[-1]
		580	}
		581
		582	=item $coin = coin_from_name $name
		583
		584	=cut
		585
		586	our %coin_alias = (
		587	"silver" => "silvercoin",
		588	"silvercoin" => "silvercoin",
		589	"silvercoins" => "silvercoin",
		590	"gold" => "goldcoin",
		591	"goldcoin" => "goldcoin",
		592	"goldcoins" => "goldcoin",
		593	"platinum" => "platinacoin",
		594	"platinumcoin" => "platinacoin",
		595	"platinumcoins" => "platinacoin",
		596	"platina" => "platinacoin",
		597	"platinacoin" => "platinacoin",
		598	"platinacoins" => "platinacoin",
		599	"royalty" => "royalty",
		600	"royalties" => "royalty",
		601	);
		602
		603	sub coin_from_name($) {
		604	$coin_alias{$_[0]}
		605	? cf::arch::find $coin_alias{$_[0]}
		606	: undef
		607	}
		608
		609	=item $value = cf::db_get $family => $key
		610
		611	Returns a single value from the environment database.
		612
		613	=item cf::db_put $family => $key => $value
		614
		615	Stores the given C<$value> in the family. It can currently store binary
		616	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		617
		618	=item $db = cf::db_table "name"
		619
		620	Create and/or open a new database table. The string must not be "db" and must be unique
		621	within each server.
		622
		623	=cut
		624
		625	sub db_table($) {
		626	my ($name) = @_;
		627	my $db = BDB::db_create $DB_ENV;
		628
		629	eval {
		630	$db->set_flags (BDB::CHKSUM);
		631
		632	utf8::encode $name;
		633	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		634	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		635	cf::cleanup "db_open(db): $!" if $!;
		636	};
		637	cf::cleanup "db_open(db): $@" if $@;
		638
		639	$db
		640	}
		641
		642	our $DB;
		643
		644	sub db_init {
		645	cf::sync_job {
		646	$DB ||= db_table "db";
		647	};
		648	}
		649
		650	sub db_get($$) {
		651	my $key = "$_[0]/$_[1]";
		652
		653	cf::sync_job {
		654	BDB::db_get $DB, undef, $key, my $data;
		655
		656	$! ? ()
		657	: $data
		658	}
		659	}
		660
		661	sub db_put($$$) {
		662	BDB::dbreq_pri 4;
		663	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		664	}
		665
		666	=item cf::cache $id => [$paths...], $processversion => $process
		667
		668	Generic caching function that returns the value of the resource $id,
		669	caching and regenerating as required.
		670
		671	This function can block.
		672
		673	=cut
		674
		675	sub cache {
		676	my ($id, $src, $processversion, $process) = @_;
		677
		678	my $meta =
		679	join "\x00",
		680	$processversion,
		681	map {
		682	aio_stat $_
		683	and Carp::croak "$_: $!";
		684
		685	($_, (stat _)[7,9])
		686	} @$src;
		687
		688	my $dbmeta = db_get cache => "$id/meta";
		689	if ($dbmeta ne $meta) {
		690	# changed, we may need to process
		691
		692	my @data;
		693	my $md5;
		694
		695	for (0 .. $#$src) {
		696	0 <= aio_load $src->[$_], $data[$_]
		697	or Carp::croak "$src->[$_]: $!";
		698	}
		699
		700	# if processing is expensive, check
		701	# checksum first
		702	if (1) {
		703	$md5 =
		704	join "\x00",
		705	$processversion,
		706	map {
		707	cf::cede_to_tick;
		708	($src->[$_], Digest::MD5::md5_hex $data[$_])
		709	} 0.. $#$src;
		710
		711
		712	my $dbmd5 = db_get cache => "$id/md5";
		713	if ($dbmd5 eq $md5) {
		714	db_put cache => "$id/meta", $meta;
		715
		716	return db_get cache => "$id/data";
		717	}
		718	}
		719
		720	my $t1 = Time::HiRes::time;
		721	my $data = $process->(\@data);
		722	my $t2 = Time::HiRes::time;
		723
		724	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		725
		726	db_put cache => "$id/data", $data;
		727	db_put cache => "$id/md5" , $md5;
		728	db_put cache => "$id/meta", $meta;
		729
		730	return $data;
		731	}
		732
		733	db_get cache => "$id/data"
		734	}
		735
		736	=item cf::datalog type => key => value, ...
		737
		738	Log a datalog packet of the given type with the given key-value pairs.
		739
		740	=cut
		741
		742	sub datalog($@) {
		743	my ($type, %kv) = @_;
		744	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
121	}	745	}
122		746
123	=back	747	=back
124		748
125	=cut	749	=cut
126		750
127	#############################################################################	751	#############################################################################
128		752
129	=head2 EVENTS AND OBJECT ATTACHMENTS	753	=head2 ATTACHABLE OBJECTS
		754
		755	Many objects in deliantra are so-called attachable objects. That means you can
		756	attach callbacks/event handlers (a collection of which is called an "attachment")
		757	to it. All such attachable objects support the following methods.
		758
		759	In the following description, CLASS can be any of C<global>, C<object>
		760	C<player>, C<client> or C<map> (i.e. the attachable objects in
		761	Deliantra).
130		762
131	=over 4	763	=over 4
132		764
133	=item $object->attach ($attachment, key => $value...)
134
135	=item $object->detach ($attachment)
136
137	Attach/detach a pre-registered attachment to an object.
138
139	=item $player->attach ($attachment, key => $value...)
140
141	=item $player->detach ($attachment)
142
143	Attach/detach a pre-registered attachment to a player.
144
145	=item $map->attach ($attachment, key => $value...)	765	=item $attachable->attach ($attachment, key => $value...)
146		766
147	=item $map->detach ($attachment)	767	=item $attachable->detach ($attachment)
148		768
149	Attach/detach a pre-registered attachment to a map.	769	Attach/detach a pre-registered attachment to a specific object and give it
		770	the specified key/value pairs as arguments.
150		771
151	=item $bool = $object->attached ($name)	772	Example, attach a minesweeper attachment to the given object, making it a
		773	10x10 minesweeper game:
152		774
153	=item $bool = $player->attached ($name)	775	$obj->attach (minesweeper => width => 10, height => 10);
154		776
155	=item $bool = $map->attached ($name)	777	=item $bool = $attachable->attached ($name)
156		778
157	Checks wether the named attachment is currently attached to the object.	779	Checks wether the named attachment is currently attached to the object.
158		780
159	=item cf::attach_global ...	781	=item cf::CLASS->attach ...
160		782
161	Attach handlers for global events.	783	=item cf::CLASS->detach ...
162		784
163	This and all following C<attach_*>-functions expect any number of the	785	Define an anonymous attachment and attach it to all objects of the given
164	following handler/hook descriptions:	786	CLASS. See the next function for an explanation of its arguments.
		787
		788	You can attach to global events by using the C<cf::global> class.
		789
		790	Example, log all player logins:
		791
		792	cf::player->attach (
		793	on_login => sub {
		794	my ($pl) = @_;
		795	...
		796	},
		797	);
		798
		799	Example, attach to the jeweler skill:
		800
		801	cf::object->attach (
		802	type => cf::SKILL,
		803	subtype => cf::SK_JEWELER,
		804	on_use_skill => sub {
		805	my ($sk, $ob, $part, $dir, $msg) = @_;
		806	...
		807	},
		808	);
		809
		810	=item cf::CLASS::attachment $name, ...
		811
		812	Register an attachment by C<$name> through which attachable objects of the
		813	given CLASS can refer to this attachment.
		814
		815	Some classes such as deliantra maps and objects can specify attachments
		816	that are attached at load/instantiate time, thus the need for a name.
		817
		818	These calls expect any number of the following handler/hook descriptions:
165		819
166	=over 4	820	=over 4
167		821
168	=item prio => $number	822	=item prio => $number
169		823
…		…
171	by another C<prio> setting). Lower priority handlers get executed	825	by another C<prio> setting). Lower priority handlers get executed
172	earlier. The default priority is C<0>, and many built-in handlers are	826	earlier. The default priority is C<0>, and many built-in handlers are
173	registered at priority C<-1000>, so lower priorities should not be used	827	registered at priority C<-1000>, so lower priorities should not be used
174	unless you know what you are doing.	828	unless you know what you are doing.
175		829
		830	=item type => $type
		831
		832	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		833	given type of objects only (the additional parameter C<subtype> can be
		834	used to further limit to the given subtype).
		835
176	=item on_I<event> => \&cb	836	=item on_I<event> => \&cb
177		837
178	Call the given code reference whenever the named event happens (event is	838	Call the given code reference whenever the named event happens (event is
179	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	839	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
180	handlers are recognised generally depends on the type of object these	840	handlers are recognised generally depends on the type of object these
…		…
189	package and register them. Only handlers for eevents supported by the	849	package and register them. Only handlers for eevents supported by the
190	object/class are recognised.	850	object/class are recognised.
191		851
192	=back	852	=back
193		853
194	=item cf::attach_to_type $object_type, $subtype, ...	854	Example, define an attachment called "sockpuppet" that calls the given
		855	event handler when a monster attacks:
195		856
196	Attach handlers for a specific object type (e.g. TRANSPORT) and	857	cf::object::attachment sockpuppet =>
197	subtype. If C<$subtype> is zero or undef, matches all objects of the given	858	on_skill_attack => sub {
198	type.	859	my ($self, $victim) = @_;
199		860	...
200	=item cf::attach_to_objects ...
201
202	Attach handlers to all objects. Do not use this except for debugging or
203	very rare events, as handlers are (obviously) called for I<all> objects in
204	the game.
205
206	=item cf::attach_to_players ...
207
208	Attach handlers to all players.
209
210	=item cf::attach_to_maps ...
211
212	Attach handlers to all maps.
213
214	=item cf:register_attachment $name, ...
215
216	Register an attachment by name through which objects can refer to this
217	attachment.
218
219	=item cf:register_player_attachment $name, ...
220
221	Register an attachment by name through which players can refer to this
222	attachment.
223
224	=item cf:register_map_attachment $name, ...
225
226	Register an attachment by name through which maps can refer to this
227	attachment.
228
229	=cut
230
231	# the following variables are defined in .xs and must not be re-created
232	our @CB_GLOBAL = (); # registry for all global events
233	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
234	our @CB_PLAYER = ();
235	our @CB_TYPE = (); # registry for type (cf-object class) based events
236	our @CB_MAP = ();
237
238	my %attachment;
239
240	sub _attach_cb($\%$$$) {
241	my ($registry, $undo, $event, $prio, $cb) = @_;
242
243	use sort 'stable';
244
245	$cb = [$prio, $cb];
246
247	@{$registry->[$event]} = sort
248	{ $a->[0] cmp $b->[0] }
249	@{$registry->[$event] || []}, $cb;
250
251	push @{$undo->{cb}}, [$event, $cb];
252	}
253
254	# attach handles attaching event callbacks
255	# the only thing the caller has to do is pass the correct
256	# registry (== where the callback attaches to).
257	sub _attach(\@$@) {
258	my ($registry, $klass, @arg) = @_;
259
260	my $prio = 0;
261
262	my %undo = (
263	registry => $registry,
264	cb => [],
265	);
266
267	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
268
269	while (@arg) {
270	my $type = shift @arg;
271
272	if ($type eq "prio") {
273	$prio = shift @arg;
274
275	} elsif ($type eq "package") {
276	my $pkg = shift @arg;
277
278	while (my ($name, $id) = each %cb_id) {
279	if (my $cb = $pkg->can ($name)) {
280	_attach_cb $registry, %undo, $id, $prio, $cb;
281	}
282	}	861	}
283
284	} elsif (exists $cb_id{$type}) {
285	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
286
287	} elsif (ref $type) {
288	warn "attaching objects not supported, ignoring.\n";
289
290	} else {
291	shift @arg;
292	warn "attach argument '$type' not supported, ignoring.\n";
293	}
294	}
295
296	\%undo
297	}
298
299	sub _attach_attachment {
300	my ($obj, $name, %arg) = @_;
301
302	return if exists $obj->{_attachment}{$name};
303
304	my $res;
305
306	if (my $attach = $attachment{$name}) {
307	my $registry = $obj->registry;
308
309	for (@$attach) {
310	my ($klass, @attach) = @$_;
311	$res = _attach @$registry, $klass, @attach;
312	}
313
314	$obj->{$name} = \%arg;
315	} else {
316	warn "object uses attachment '$name' that is not available, postponing.\n";
317	}
318
319	$obj->{_attachment}{$name} = undef;
320
321	$res->{attachment} = $name;
322	$res
323	}
324
325	*cf::object::attach =
326	*cf::player::attach =
327	*cf::map::attach = sub {
328	my ($obj, $name, %arg) = @_;
329
330	_attach_attachment $obj, $name, %arg;
331	};
332
333	# all those should be optimised
334	*cf::object::detach =
335	*cf::player::detach =
336	*cf::map::detach = sub {
337	my ($obj, $name) = @_;
338
339	delete $obj->{_attachment}{$name};
340	reattach ($obj);
341	};
342
343	*cf::object::attached =
344	*cf::player::attached =
345	*cf::map::attached = sub {
346	my ($obj, $name) = @_;
347
348	exists $obj->{_attachment}{$name}
349	};
350
351	sub attach_global {
352	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
353	}
354
355	sub attach_to_type {
356	my $type = shift;
357	my $subtype = shift;
358
359	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
360	}
361
362	sub attach_to_objects {
363	_attach @CB_OBJECT, KLASS_OBJECT, @_
364	}
365
366	sub attach_to_players {
367	_attach @CB_PLAYER, KLASS_PLAYER, @_
368	}
369
370	sub attach_to_maps {
371	_attach @CB_MAP, KLASS_MAP, @_
372	}
373
374	sub register_attachment {
375	my $name = shift;
376
377	$attachment{$name} = [[KLASS_OBJECT, @_]];
378	}
379
380	sub register_player_attachment {
381	my $name = shift;
382
383	$attachment{$name} = [[KLASS_PLAYER, @_]];
384	}
385
386	sub register_map_attachment {
387	my $name = shift;
388
389	$attachment{$name} = [[KLASS_MAP, @_]];
390	}
391
392	our $override;
393	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
394
395	sub override {
396	$override = 1;
397	@invoke_results = ();
398	}
399
400	sub do_invoke {
401	my $event = shift;
402	my $callbacks = shift;
403
404	@invoke_results = ();
405
406	local $override;
407
408	for (@$callbacks) {
409	eval { &{$_->[1]} };
410
411	if ($@) {
412	warn "$@";
413	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
414	override;
415	}
416
417	return 1 if $override;
418	}
419
420	0	862	}
421	}
422		863
423	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	864	=item $attachable->valid
424
425	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
426
427	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
428
429	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
430
431	Generate a global/object/player/map-specific event with the given arguments.
432
433	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
434	removed in future versions), and there is no public API to access override
435	results (if you must, access C<@cf::invoke_results> directly).
436
437	=back
438
439	=cut
440
441	#############################################################################
442
443	=head2 METHODS VALID FOR ALL CORE OBJECTS
444
445	=over 4
446
447	=item $object->valid, $player->valid, $map->valid
448		865
449	Just because you have a perl object does not mean that the corresponding	866	Just because you have a perl object does not mean that the corresponding
450	C-level object still exists. If you try to access an object that has no	867	C-level object still exists. If you try to access an object that has no
451	valid C counterpart anymore you get an exception at runtime. This method	868	valid C counterpart anymore you get an exception at runtime. This method
452	can be used to test for existence of the C object part without causing an	869	can be used to test for existence of the C object part without causing an
453	exception.	870	exception.
454		871
		872	=cut
		873
		874	# the following variables are defined in .xs and must not be re-created
		875	our @CB_GLOBAL = (); # registry for all global events
		876	our @CB_ATTACHABLE = (); # registry for all attachables
		877	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		878	our @CB_PLAYER = ();
		879	our @CB_CLIENT = ();
		880	our @CB_TYPE = (); # registry for type (cf-object class) based events
		881	our @CB_MAP = ();
		882
		883	my %attachment;
		884
		885	sub cf::attachable::thawer_merge {
		886	# simply override everything except _meta
		887	local $_[0]{_meta};
		888	%{$_[0]} = %{$_[1]};
		889	}
		890
		891	sub _attach_cb($$$$) {
		892	my ($registry, $event, $prio, $cb) = @_;
		893
		894	use sort 'stable';
		895
		896	$cb = [$prio, $cb];
		897
		898	@{$registry->[$event]} = sort
		899	{ $a->[0] cmp $b->[0] }
		900	@{$registry->[$event] || []}, $cb;
		901	}
		902
		903	# hack
		904	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		905
		906	# attach handles attaching event callbacks
		907	# the only thing the caller has to do is pass the correct
		908	# registry (== where the callback attaches to).
		909	sub _attach {
		910	my ($registry, $klass, @arg) = @_;
		911
		912	my $object_type;
		913	my $prio = 0;
		914	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		915
		916	#TODO: get rid of this hack
		917	if ($attachable_klass{$klass}) {
		918	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		919	}
		920
		921	while (@arg) {
		922	my $type = shift @arg;
		923
		924	if ($type eq "prio") {
		925	$prio = shift @arg;
		926
		927	} elsif ($type eq "type") {
		928	$object_type = shift @arg;
		929	$registry = $CB_TYPE[$object_type] ||= [];
		930
		931	} elsif ($type eq "subtype") {
		932	defined $object_type or Carp::croak "subtype specified without type";
		933	my $object_subtype = shift @arg;
		934	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		935
		936	} elsif ($type eq "package") {
		937	my $pkg = shift @arg;
		938
		939	while (my ($name, $id) = each %cb_id) {
		940	if (my $cb = $pkg->can ($name)) {
		941	_attach_cb $registry, $id, $prio, $cb;
		942	}
		943	}
		944
		945	} elsif (exists $cb_id{$type}) {
		946	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		947
		948	} elsif (ref $type) {
		949	warn "attaching objects not supported, ignoring.\n";
		950
		951	} else {
		952	shift @arg;
		953	warn "attach argument '$type' not supported, ignoring.\n";
		954	}
		955	}
		956	}
		957
		958	sub _object_attach {
		959	my ($obj, $name, %arg) = @_;
		960
		961	return if exists $obj->{_attachment}{$name};
		962
		963	if (my $attach = $attachment{$name}) {
		964	my $registry = $obj->registry;
		965
		966	for (@$attach) {
		967	my ($klass, @attach) = @$_;
		968	_attach $registry, $klass, @attach;
		969	}
		970
		971	$obj->{$name} = \%arg;
		972	} else {
		973	warn "object uses attachment '$name' which is not available, postponing.\n";
		974	}
		975
		976	$obj->{_attachment}{$name} = undef;
		977	}
		978
		979	sub cf::attachable::attach {
		980	if (ref $_[0]) {
		981	_object_attach @_;
		982	} else {
		983	_attach shift->_attach_registry, @_;
		984	}
		985	_recalc_want;
		986	};
		987
		988	# all those should be optimised
		989	sub cf::attachable::detach {
		990	my ($obj, $name) = @_;
		991
		992	if (ref $obj) {
		993	delete $obj->{_attachment}{$name};
		994	reattach ($obj);
		995	} else {
		996	Carp::croak "cannot, currently, detach class attachments";
		997	}
		998	_recalc_want;
		999	};
		1000
		1001	sub cf::attachable::attached {
		1002	my ($obj, $name) = @_;
		1003
		1004	exists $obj->{_attachment}{$name}
		1005	}
		1006
		1007	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1008	eval "#line " . __LINE__ . " 'cf.pm'
		1009	sub cf::\L$klass\E::_attach_registry {
		1010	(\\\@CB_$klass, KLASS_$klass)
		1011	}
		1012
		1013	sub cf::\L$klass\E::attachment {
		1014	my \$name = shift;
		1015
		1016	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1017	}
		1018	";
		1019	die if $@;
		1020	}
		1021
		1022	our $override;
		1023	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1024
		1025	sub override {
		1026	$override = 1;
		1027	@INVOKE_RESULTS = (@_);
		1028	}
		1029
		1030	sub do_invoke {
		1031	my $event = shift;
		1032	my $callbacks = shift;
		1033
		1034	@INVOKE_RESULTS = ();
		1035
		1036	local $override;
		1037
		1038	for (@$callbacks) {
		1039	eval { &{$_->[1]} };
		1040
		1041	if ($@) {
		1042	warn "$@";
		1043	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1044	override;
		1045	}
		1046
		1047	return 1 if $override;
		1048	}
		1049
		1050	0
		1051	}
		1052
		1053	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1054
		1055	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1056
		1057	Generate an object-specific event with the given arguments.
		1058
		1059	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1060	removed in future versions), and there is no public API to access override
		1061	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1062
455	=back	1063	=back
456		1064
457	=cut	1065	=cut
458
459	*cf::object::valid =
460	*cf::player::valid =
461	*cf::map::valid = \&cf::_valid;
462		1066
463	#############################################################################	1067	#############################################################################
464	# object support	1068	# object support
465		1069
466	sub instantiate {	1070	sub _object_equal($$);
		1071	sub _object_equal($$) {
		1072	my ($a, $b) = @_;
		1073
		1074	return 0 unless (ref $a) eq (ref $b);
		1075
		1076	if ("HASH" eq ref $a) {
		1077	my @ka = keys %$a;
		1078	my @kb = keys %$b;
		1079
		1080	return 0 if @ka != @kb;
		1081
		1082	for (0 .. $#ka) {
		1083	return 0 unless $ka[$_] eq $kb[$_];
		1084	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1085	}
		1086
		1087	} elsif ("ARRAY" eq ref $a) {
		1088
		1089	return 0 if @$a != @$b;
		1090
		1091	for (0 .. $#$a) {
		1092	return 0 unless _object_equal $a->[$_], $b->[$_];
		1093	}
		1094
		1095	} elsif ($a ne $b) {
		1096	return 0;
		1097	}
		1098
		1099	1
		1100	}
		1101
		1102	our $SLOW_MERGES;#d#
		1103	sub _can_merge {
467	my ($obj, $data) = @_;	1104	my ($ob1, $ob2) = @_;
468		1105
469	$data = from_json $data;	1106	++$SLOW_MERGES;#d#
470		1107
471	for (@$data) {	1108	# we do the slow way here
472	my ($name, $args) = @$_;	1109	return _object_equal $ob1, $ob2
473
474	$obj->attach ($name, %{$args || {} });
475	}
476	}	1110	}
477		1111
478	# basically do the same as instantiate, without calling instantiate
479	sub reattach {	1112	sub reattach {
		1113	# basically do the same as instantiate, without calling instantiate
480	my ($obj) = @_;	1114	my ($obj) = @_;
		1115
		1116	# no longer needed after getting rid of delete_package?
		1117	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1118
481	my $registry = $obj->registry;	1119	my $registry = $obj->registry;
482		1120
483	@$registry = ();	1121	@$registry = ();
484		1122
485	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1123	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
486		1124
487	for my $name (keys %{ $obj->{_attachment} || {} }) {	1125	for my $name (keys %{ $obj->{_attachment} || {} }) {
488	if (my $attach = $attachment{$name}) {	1126	if (my $attach = $attachment{$name}) {
489	for (@$attach) {	1127	for (@$attach) {
490	my ($klass, @attach) = @$_;	1128	my ($klass, @attach) = @$_;
491	_attach @$registry, $klass, @attach;	1129	_attach $registry, $klass, @attach;
492	}	1130	}
493	} else {	1131	} else {
494	warn "object uses attachment '$name' that is not available, postponing.\n";	1132	warn "object uses attachment '$name' that is not available, postponing.\n";
495	}	1133	}
496	}	1134	}
497	}	1135	}
498		1136
499	sub object_freezer_save {	1137	cf::attachable->attach (
500	my ($filename, $rdata, $objs) = @_;
501
502	if (length $$rdata) {
503	warn sprintf "saving %s (%d,%d)\n",
504	$filename, length $$rdata, scalar @$objs;
505
506	if (open my $fh, ">:raw", "$filename~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, $$rdata;
509	close $fh;
510
511	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
514	close $fh;
515	rename "$filename.pst~", "$filename.pst";
516	} else {
517	unlink "$filename.pst";
518	}
519
520	rename "$filename~", $filename;
521	} else {
522	warn "FATAL: $filename~: $!\n";
523	}
524	} else {
525	unlink $filename;
526	unlink "$filename.pst";
527	}
528	}
529
530	sub object_freezer_as_string {
531	my ($rdata, $objs) = @_;
532
533	use Data::Dumper;
534
535	$$rdata . Dumper $objs
536	}
537
538	sub object_thawer_load {
539	my ($filename) = @_;
540
541	local $/;
542
543	my $av;
544
545	#TODO: use sysread etc.
546	if (open my $data, "<:raw:perlio", $filename) {
547	$data = <$data>;
548	if (open my $pst, "<:raw:perlio", "$filename.pst") {
549	$av = eval { (Storable::thaw <$pst>)->{objs} };
550	}
551	return ($data, $av);
552	}
553
554	()
555	}
556
557	attach_to_objects
558	prio => -1000000,	1138	prio => -1000000,
		1139	on_instantiate => sub {
		1140	my ($obj, $data) = @_;
		1141
		1142	$data = decode_json $data;
		1143
		1144	for (@$data) {
		1145	my ($name, $args) = @$_;
		1146
		1147	$obj->attach ($name, %{$args || {} });
		1148	}
		1149	},
		1150	on_reattach => \&reattach,
559	on_clone => sub {	1151	on_clone => sub {
560	my ($src, $dst) = @_;	1152	my ($src, $dst) = @_;
561		1153
562	@{$dst->registry} = @{$src->registry};	1154	@{$dst->registry} = @{$src->registry};
563		1155
564	%$dst = %$src;	1156	%$dst = %$src;
565		1157
566	%{$dst->{_attachment}} = %{$src->{_attachment}}	1158	%{$dst->{_attachment}} = %{$src->{_attachment}}
567	if exists $src->{_attachment};	1159	if exists $src->{_attachment};
568	},	1160	},
569	;	1161	);
		1162
		1163	sub object_freezer_save {
		1164	my ($filename, $rdata, $objs) = @_;
		1165
		1166	sync_job {
		1167	if (length $$rdata) {
		1168	utf8::decode (my $decname = $filename);
		1169	warn sprintf "saving %s (%d,%d)\n",
		1170	$decname, length $$rdata, scalar @$objs;
		1171
		1172	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1173	aio_chmod $fh, SAVE_MODE;
		1174	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1175	aio_fsync $fh if $cf::USE_FSYNC;
		1176	aio_close $fh;
		1177
		1178	if (@$objs) {
		1179	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1180	aio_chmod $fh, SAVE_MODE;
		1181	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1182	aio_write $fh, 0, (length $data), $data, 0;
		1183	aio_fsync $fh if $cf::USE_FSYNC;
		1184	aio_close $fh;
		1185	aio_rename "$filename.pst~", "$filename.pst";
		1186	}
		1187	} else {
		1188	aio_unlink "$filename.pst";
		1189	}
		1190
		1191	aio_rename "$filename~", $filename;
		1192
		1193	$filename =~ s%/[^/]+$%%;
		1194	aio_pathsync $filename;
		1195	} else {
		1196	warn "FATAL: $filename~: $!\n";
		1197	}
		1198	} else {
		1199	aio_unlink $filename;
		1200	aio_unlink "$filename.pst";
		1201	}
		1202	};
		1203	}
		1204
		1205	sub object_freezer_as_string {
		1206	my ($rdata, $objs) = @_;
		1207
		1208	use Data::Dumper;
		1209
		1210	$$rdata . Dumper $objs
		1211	}
		1212
		1213	sub object_thawer_load {
		1214	my ($filename) = @_;
		1215
		1216	my ($data, $av);
		1217
		1218	(aio_load $filename, $data) >= 0
		1219	or return;
		1220
		1221	unless (aio_stat "$filename.pst") {
		1222	(aio_load "$filename.pst", $av) >= 0
		1223	or return;
		1224
		1225	my $st = eval { Coro::Storable::thaw $av };
		1226	$av = $st->{objs};
		1227	}
		1228
		1229	utf8::decode (my $decname = $filename);
		1230	warn sprintf "loading %s (%d,%d)\n",
		1231	$decname, length $data, scalar @{$av || []};
		1232
		1233	($data, $av)
		1234	}
		1235
		1236	=head2 COMMAND CALLBACKS
		1237
		1238	=over 4
		1239
		1240	=cut
570		1241
571	#############################################################################	1242	#############################################################################
572	# old plug-in events	1243	# command handling &c
573		1244
574	sub inject_event {	1245	=item cf::register_command $name => \&callback($ob,$args);
575	my $extension = shift;
576	my $event_code = shift;
577		1246
578	my $cb = $hook[$event_code]{$extension}	1247	Register a callback for execution when the client sends the user command
579	or return;	1248	$name.
580		1249
581	&$cb	1250	=cut
582	}
583
584	sub inject_global_event {
585	my $event = shift;
586
587	my $cb = $hook[$event]
588	or return;
589
590	List::Util::max map &$_, values %$cb
591	}
592
593	sub inject_command {
594	my ($name, $obj, $params) = @_;
595
596	for my $cmd (@{ $command{$name} }) {
597	$cmd->[1]->($obj, $params);
598	}
599
600	-1
601	}
602		1251
603	sub register_command {	1252	sub register_command {
604	my ($name, $time, $cb) = @_;	1253	my ($name, $cb) = @_;
605		1254
606	my $caller = caller;	1255	my $caller = caller;
607	#warn "registering command '$name/$time' to '$caller'";	1256	#warn "registering command '$name/$time' to '$caller'";
608		1257
609	push @{ $command{$name} }, [$time, $cb, $caller];	1258	push @{ $COMMAND{$name} }, [$caller, $cb];
610	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
611	}	1259	}
		1260
		1261	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1262
		1263	Register a callback for execution when the client sends an (synchronous)
		1264	extcmd packet. Ext commands will be processed in the order they are
		1265	received by the server, like other user commands. The first argument is
		1266	the logged-in player. Ext commands can only be processed after a player
		1267	has logged in successfully.
		1268
		1269	If the callback returns something, it is sent back as if reply was being
		1270	called.
		1271
		1272	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1273
		1274	Register a callback for execution when the client sends an (asynchronous)
		1275	exticmd packet. Exti commands are processed by the server as soon as they
		1276	are received, i.e. out of order w.r.t. other commands. The first argument
		1277	is a client socket. Exti commands can be received anytime, even before
		1278	log-in.
		1279
		1280	If the callback returns something, it is sent back as if reply was being
		1281	called.
		1282
		1283	=cut
612		1284
613	sub register_extcmd {	1285	sub register_extcmd {
614	my ($name, $cb) = @_;	1286	my ($name, $cb) = @_;
615		1287
616	my $caller = caller;	1288	$EXTCMD{$name} = $cb;
617	#warn "registering extcmd '$name' to '$caller'";
618
619	$extcmd{$name} = [$cb, $caller];
620	}	1289	}
621		1290
622	sub register {	1291	sub register_exticmd {
623	my ($base, $pkg) = @_;	1292	my ($name, $cb) = @_;
624		1293
625	#TODO	1294	$EXTICMD{$name} = $cb;
626	}	1295	}
627		1296
628	sub load_extension {	1297	cf::player->attach (
629	my ($path) = @_;	1298	on_command => sub {
		1299	my ($pl, $name, $params) = @_;
630		1300
631	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1301	my $cb = $COMMAND{$name}
632	my $base = $1;	1302	or return;
633	my $pkg = $1;
634	$pkg =~ s/[^[:word:]]/_/g;
635	$pkg = "ext::$pkg";
636		1303
637	warn "loading '$path' into '$pkg'\n";	1304	for my $cmd (@$cb) {
638		1305	$cmd->[1]->($pl->ob, $params);
639	open my $fh, "<:utf8", $path
640	or die "$path: $!";
641
642	my $source =
643	"package $pkg; use strict; use utf8;\n"
644	. "#line 1 \"$path\"\n{\n"
645	. (do { local $/; <$fh> })
646	. "\n};\n1";
647
648	eval $source
649	or die $@ ? "$path: $@\n"
650	: "extension disabled.\n";
651
652	push @exts, $pkg;
653	$ext_pkg{$base} = $pkg;
654
655	# no strict 'refs';
656	# @{"$pkg\::ISA"} = ext::;
657
658	register $base, $pkg;
659	}
660
661	sub unload_extension {
662	my ($pkg) = @_;
663
664	warn "removing extension $pkg\n";
665
666	# remove hooks
667	#TODO
668	# for my $idx (0 .. $#PLUGIN_EVENT) {
669	# delete $hook[$idx]{$pkg};
670	# }
671
672	# remove commands
673	for my $name (keys %command) {
674	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
675
676	if (@cb) {
677	$command{$name} = \@cb;
678	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
679	} else {
680	delete $command{$name};
681	delete $COMMAND{"$name\000"};
682	}	1306	}
		1307
		1308	cf::override;
683	}	1309	},
684
685	# remove extcmds
686	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
687	delete $extcmd{$name};
688	}
689
690	if (my $cb = $pkg->can ("unload")) {
691	eval {
692	$cb->($pkg);
693	1
694	} or warn "$pkg unloaded, but with errors: $@";
695	}
696
697	Symbol::delete_package $pkg;
698	}
699
700	sub load_extensions {
701	my $LIBDIR = maps_directory "perl";
702
703	for my $ext (<$LIBDIR/*.ext>) {
704	next unless -r $ext;
705	eval {
706	load_extension $ext;
707	1
708	} or warn "$ext not loaded: $@";
709	}
710	}
711
712	#############################################################################
713	# extcmd framework, basically convert ext <msg>
714	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
715
716	attach_to_players
717	on_extcmd => sub {	1310	on_extcmd => sub {
718	my ($pl, $buf) = @_;	1311	my ($pl, $buf) = @_;
719		1312
720	my $msg = eval { from_json $buf };	1313	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
721		1314
722	if (ref $msg) {	1315	if (ref $msg) {
		1316	my ($type, $reply, @payload) =
		1317	"ARRAY" eq ref $msg
		1318	? @$msg
		1319	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1320
		1321	my @reply;
		1322
723	if (my $cb = $extcmd{$msg->{msgtype}}) {	1323	if (my $cb = $EXTCMD{$type}) {
724	if (my %reply = $cb->[0]->($pl, $msg)) {	1324	@reply = $cb->($pl, @payload);
725	$pl->ext_reply ($msg->{msgid}, %reply);	1325	}
		1326
		1327	$pl->ext_reply ($reply, @reply)
		1328	if $reply;
		1329
		1330	} else {
		1331	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1332	}
		1333
		1334	cf::override;
		1335	},
		1336	);
		1337
		1338	sub load_extensions {
		1339	cf::sync_job {
		1340	my %todo;
		1341
		1342	for my $path (<$LIBDIR/*.ext>) {
		1343	next unless -r $path;
		1344
		1345	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1346	my $base = $1;
		1347	my $pkg = $1;
		1348	$pkg =~ s/[^[:word:]]/_/g;
		1349	$pkg = "ext::$pkg";
		1350
		1351	open my $fh, "<:utf8", $path
		1352	or die "$path: $!";
		1353
		1354	my $source = do { local $/; <$fh> };
		1355
		1356	my %ext = (
		1357	path => $path,
		1358	base => $base,
		1359	pkg => $pkg,
		1360	);
		1361
		1362	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1363	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1364
		1365	$ext{source} =
		1366	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1367	. "#line 1 \"$path\"\n{\n"
		1368	. $source
		1369	. "\n};\n1";
		1370
		1371	$todo{$base} = \%ext;
		1372	}
		1373
		1374	my %done;
		1375	while (%todo) {
		1376	my $progress;
		1377
		1378	while (my ($k, $v) = each %todo) {
		1379	for (split /,\s*/, $v->{meta}{depends}) {
		1380	goto skip
		1381	unless exists $done{$_};
		1382	}
		1383
		1384	warn "... loading '$k' into '$v->{pkg}'\n";
		1385
		1386	unless (eval $v->{source}) {
		1387	my $msg = $@ ? "$v->{path}: $@\n"
		1388	: "$v->{base}: extension inactive.\n";
		1389
		1390	if (exists $v->{meta}{mandatory}) {
		1391	warn $msg;
		1392	cf::cleanup "mandatory extension failed to load, exiting.";
		1393	}
		1394
		1395	warn $msg;
		1396	}
		1397
		1398	$done{$k} = delete $todo{$k};
		1399	push @EXTS, $v->{pkg};
		1400	$progress = 1;
		1401	}
		1402
		1403	skip:
		1404	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1405	unless $progress;
		1406	}
		1407	};
		1408	}
		1409
		1410	#############################################################################
		1411
		1412	=back
		1413
		1414	=head2 CORE EXTENSIONS
		1415
		1416	Functions and methods that extend core deliantra objects.
		1417
		1418	=cut
		1419
		1420	package cf::player;
		1421
		1422	use Coro::AIO;
		1423
		1424	=head3 cf::player
		1425
		1426	=over 4
		1427
		1428	=item cf::player::num_playing
		1429
		1430	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1431
		1432	=cut
		1433
		1434	sub num_playing {
		1435	scalar grep
		1436	$_->ob->map
		1437	&& !$_->hidden
		1438	&& !$_->ob->flag (cf::FLAG_WIZ),
		1439	cf::player::list
		1440	}
		1441
		1442	=item cf::player::find $login
		1443
		1444	Returns the given player object, loading it if necessary (might block).
		1445
		1446	=cut
		1447
		1448	sub playerdir($) {
		1449	"$PLAYERDIR/"
		1450	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1451	}
		1452
		1453	sub path($) {
		1454	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1455
		1456	(playerdir $login) . "/playerdata"
		1457	}
		1458
		1459	sub find_active($) {
		1460	$cf::PLAYER{$_[0]}
		1461	and $cf::PLAYER{$_[0]}->active
		1462	and $cf::PLAYER{$_[0]}
		1463	}
		1464
		1465	sub exists($) {
		1466	my ($login) = @_;
		1467
		1468	$cf::PLAYER{$login}
		1469	or !aio_stat path $login
		1470	}
		1471
		1472	sub find($) {
		1473	return $cf::PLAYER{$_[0]} || do {
		1474	my $login = $_[0];
		1475
		1476	my $guard = cf::lock_acquire "user_find:$login";
		1477
		1478	$cf::PLAYER{$_[0]} || do {
		1479	# rename old playerfiles to new ones
		1480	#TODO: remove when no longer required
		1481	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1482	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1483	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1484	aio_unlink +(playerdir $login) . "/$login.pl";
		1485
		1486	my $f = new_from_file cf::object::thawer path $login
		1487	or return;
		1488
		1489	my $pl = cf::player::load_pl $f
		1490	or return;
		1491
		1492	local $cf::PLAYER_LOADING{$login} = $pl;
		1493	$f->resolve_delayed_derefs;
		1494	$cf::PLAYER{$login} = $pl
		1495	}
		1496	}
		1497	}
		1498
		1499	sub save($) {
		1500	my ($pl) = @_;
		1501
		1502	return if $pl->{deny_save};
		1503
		1504	my $path = path $pl;
		1505	my $guard = cf::lock_acquire "user_save:$path";
		1506
		1507	return if $pl->{deny_save};
		1508
		1509	aio_mkdir playerdir $pl, 0770;
		1510	$pl->{last_save} = $cf::RUNTIME;
		1511
		1512	cf::get_slot 0.01;
		1513
		1514	$pl->save_pl ($path);
		1515	cf::cede_to_tick;
		1516	}
		1517
		1518	sub new($) {
		1519	my ($login) = @_;
		1520
		1521	my $self = create;
		1522
		1523	$self->ob->name ($login);
		1524	$self->{deny_save} = 1;
		1525
		1526	$cf::PLAYER{$login} = $self;
		1527
		1528	$self
		1529	}
		1530
		1531	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1532
		1533	=cut
		1534
		1535	sub send_msg {
		1536	my $ns = shift->ns
		1537	or return;
		1538	$ns->send_msg (@_);
		1539	}
		1540
		1541	=item $pl->quit_character
		1542
		1543	Nukes the player without looking back. If logged in, the connection will
		1544	be destroyed. May block for a long time.
		1545
		1546	=cut
		1547
		1548	sub quit_character {
		1549	my ($pl) = @_;
		1550
		1551	my $name = $pl->ob->name;
		1552
		1553	$pl->{deny_save} = 1;
		1554	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1555
		1556	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1557	$pl->deactivate;
		1558	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1559	$pl->ob->check_score;
		1560	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1561	$pl->ns->destroy if $pl->ns;
		1562
		1563	my $path = playerdir $pl;
		1564	my $temp = "$path~$cf::RUNTIME~deleting~";
		1565	aio_rename $path, $temp;
		1566	delete $cf::PLAYER{$pl->ob->name};
		1567	$pl->destroy;
		1568
		1569	my $prefix = qr<^~\Q$name\E/>;
		1570
		1571	# nuke player maps
		1572	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1573
		1574	IO::AIO::aio_rmtree $temp;
		1575	}
		1576
		1577	=item $pl->kick
		1578
		1579	Kicks a player out of the game. This destroys the connection.
		1580
		1581	=cut
		1582
		1583	sub kick {
		1584	my ($pl, $kicker) = @_;
		1585
		1586	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1587	$pl->killer ("kicked");
		1588	$pl->ns->destroy;
		1589	}
		1590
		1591	=item cf::player::list_logins
		1592
		1593	Returns am arrayref of all valid playernames in the system, can take a
		1594	while and may block, so not sync_job-capable, ever.
		1595
		1596	=cut
		1597
		1598	sub list_logins {
		1599	my $dirs = aio_readdir $PLAYERDIR
		1600	or return [];
		1601
		1602	my @logins;
		1603
		1604	for my $login (@$dirs) {
		1605	my $path = path $login;
		1606
		1607	# a .pst is a dead give-away for a valid player
		1608	# if no pst file found, open and chekc for blocked users
		1609	if (aio_stat "$path.pst") {
		1610	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1611	aio_read $fh, 0, 512, my $buf, 0 or next;
		1612	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1613	}
		1614
		1615	utf8::decode $login;
		1616	push @logins, $login;
		1617	}
		1618
		1619	\@logins
		1620	}
		1621
		1622	=item $player->maps
		1623
		1624	Returns an arrayref of map paths that are private for this
		1625	player. May block.
		1626
		1627	=cut
		1628
		1629	sub maps($) {
		1630	my ($pl) = @_;
		1631
		1632	$pl = ref $pl ? $pl->ob->name : $pl;
		1633
		1634	my $files = aio_readdir playerdir $pl
		1635	or return;
		1636
		1637	my @paths;
		1638
		1639	for (@$files) {
		1640	utf8::decode $_;
		1641	next if /\.(?:pl|pst)$/;
		1642	next unless /^$PATH_SEP/o;
		1643
		1644	push @paths, cf::map::normalise "~$pl/$_";
		1645	}
		1646
		1647	\@paths
		1648	}
		1649
		1650	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1651
		1652	Expand deliantra pod fragments into protocol xml.
		1653
		1654	=item $player->ext_reply ($msgid, @msg)
		1655
		1656	Sends an ext reply to the player.
		1657
		1658	=cut
		1659
		1660	sub ext_reply($$@) {
		1661	my ($self, $id, @msg) = @_;
		1662
		1663	$self->ns->ext_reply ($id, @msg)
		1664	}
		1665
		1666	=item $player->ext_msg ($type, @msg)
		1667
		1668	Sends an ext event to the client.
		1669
		1670	=cut
		1671
		1672	sub ext_msg($$@) {
		1673	my ($self, $type, @msg) = @_;
		1674
		1675	$self->ns->ext_msg ($type, @msg);
		1676	}
		1677
		1678	=head3 cf::region
		1679
		1680	=over 4
		1681
		1682	=cut
		1683
		1684	package cf::region;
		1685
		1686	=item cf::region::find_by_path $path
		1687
		1688	Tries to decuce the likely region for a map knowing only its path.
		1689
		1690	=cut
		1691
		1692	sub find_by_path($) {
		1693	my ($path) = @_;
		1694
		1695	my ($match, $specificity);
		1696
		1697	for my $region (list) {
		1698	if ($region->{match} && $path =~ $region->{match}) {
		1699	($match, $specificity) = ($region, $region->specificity)
		1700	if $region->specificity > $specificity;
		1701	}
		1702	}
		1703
		1704	$match
		1705	}
		1706
		1707	=back
		1708
		1709	=head3 cf::map
		1710
		1711	=over 4
		1712
		1713	=cut
		1714
		1715	package cf::map;
		1716
		1717	use Fcntl;
		1718	use Coro::AIO;
		1719
		1720	use overload
		1721	'""' => \&as_string,
		1722	fallback => 1;
		1723
		1724	our $MAX_RESET = 3600;
		1725	our $DEFAULT_RESET = 3000;
		1726
		1727	sub generate_random_map {
		1728	my ($self, $rmp) = @_;
		1729
		1730	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1731
		1732	# mit "rum" bekleckern, nicht
		1733	$self->_create_random_map (
		1734	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1735	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1736	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1737	$rmp->{exit_on_final_map},
		1738	$rmp->{xsize}, $rmp->{ysize},
		1739	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1740	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1741	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1742	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1743	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1744	(cf::region::find $rmp->{region}), $rmp->{custom}
		1745	)
		1746	}
		1747
		1748	=item cf::map->register ($regex, $prio)
		1749
		1750	Register a handler for the map path matching the given regex at the
		1751	givne priority (higher is better, built-in handlers have priority 0, the
		1752	default).
		1753
		1754	=cut
		1755
		1756	sub register {
		1757	my (undef, $regex, $prio) = @_;
		1758	my $pkg = caller;
		1759
		1760	no strict;
		1761	push @{"$pkg\::ISA"}, __PACKAGE__;
		1762
		1763	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1764	}
		1765
		1766	# also paths starting with '/'
		1767	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1768
		1769	sub thawer_merge {
		1770	my ($self, $merge) = @_;
		1771
		1772	# we have to keep some variables in memory intact
		1773	local $self->{path};
		1774	local $self->{load_path};
		1775
		1776	$self->SUPER::thawer_merge ($merge);
		1777	}
		1778
		1779	sub normalise {
		1780	my ($path, $base) = @_;
		1781
		1782	$path = "$path"; # make sure its a string
		1783
		1784	$path =~ s/\.map$//;
		1785
		1786	# map plan:
		1787	#
		1788	# /! non-realised random map exit (special hack!)
		1789	# {... are special paths that are not being touched
		1790	# ?xxx/... are special absolute paths
		1791	# ?random/... random maps
		1792	# /... normal maps
		1793	# ~user/... per-player map of a specific user
		1794
		1795	$path =~ s/$PATH_SEP/\//go;
		1796
		1797	# treat it as relative path if it starts with
		1798	# something that looks reasonable
		1799	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1800	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1801
		1802	$base =~ s{[^/]+/?$}{};
		1803	$path = "$base/$path";
		1804	}
		1805
		1806	for ($path) {
		1807	redo if s{//}{/};
		1808	redo if s{/\.?/}{/};
		1809	redo if s{/[^/]+/\.\./}{/};
		1810	}
		1811
		1812	$path
		1813	}
		1814
		1815	sub new_from_path {
		1816	my (undef, $path, $base) = @_;
		1817
		1818	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1819
		1820	$path = normalise $path, $base;
		1821
		1822	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1823	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1824	my $self = bless cf::map::new, $pkg;
		1825	$self->{path} = $path; $self->path ($path);
		1826	$self->init; # pass $1 etc.
		1827	return $self;
		1828	}
		1829	}
		1830
		1831	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1832	()
		1833	}
		1834
		1835	sub init {
		1836	my ($self) = @_;
		1837
		1838	$self
		1839	}
		1840
		1841	sub as_string {
		1842	my ($self) = @_;
		1843
		1844	"$self->{path}"
		1845	}
		1846
		1847	# the displayed name, this is a one way mapping
		1848	sub visible_name {
		1849	&as_string
		1850	}
		1851
		1852	# the original (read-only) location
		1853	sub load_path {
		1854	my ($self) = @_;
		1855
		1856	"$MAPDIR/$self->{path}.map"
		1857	}
		1858
		1859	# the temporary/swap location
		1860	sub save_path {
		1861	my ($self) = @_;
		1862
		1863	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1864	"$TMPDIR/$path.map"
		1865	}
		1866
		1867	# the unique path, undef == no special unique path
		1868	sub uniq_path {
		1869	my ($self) = @_;
		1870
		1871	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1872	"$UNIQUEDIR/$path"
		1873	}
		1874
		1875	# and all this just because we cannot iterate over
		1876	# all maps in C++...
		1877	sub change_all_map_light {
		1878	my ($change) = @_;
		1879
		1880	$_->change_map_light ($change)
		1881	for grep $_->outdoor, values %cf::MAP;
		1882	}
		1883
		1884	sub decay_objects {
		1885	my ($self) = @_;
		1886
		1887	return if $self->{deny_reset};
		1888
		1889	$self->do_decay_objects;
		1890	}
		1891
		1892	sub unlink_save {
		1893	my ($self) = @_;
		1894
		1895	utf8::encode (my $save = $self->save_path);
		1896	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1897	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1898	}
		1899
		1900	sub load_header_from($) {
		1901	my ($self, $path) = @_;
		1902
		1903	utf8::encode $path;
		1904	my $f = new_from_file cf::object::thawer $path
		1905	or return;
		1906
		1907	$self->_load_header ($f)
		1908	or return;
		1909
		1910	local $MAP_LOADING{$self->{path}} = $self;
		1911	$f->resolve_delayed_derefs;
		1912
		1913	$self->{load_path} = $path;
		1914
		1915	1
		1916	}
		1917
		1918	sub load_header_orig {
		1919	my ($self) = @_;
		1920
		1921	$self->load_header_from ($self->load_path)
		1922	}
		1923
		1924	sub load_header_temp {
		1925	my ($self) = @_;
		1926
		1927	$self->load_header_from ($self->save_path)
		1928	}
		1929
		1930	sub prepare_temp {
		1931	my ($self) = @_;
		1932
		1933	$self->last_access ((delete $self->{last_access})
		1934	|| $cf::RUNTIME); #d#
		1935	# safety
		1936	$self->{instantiate_time} = $cf::RUNTIME
		1937	if $self->{instantiate_time} > $cf::RUNTIME;
		1938	}
		1939
		1940	sub prepare_orig {
		1941	my ($self) = @_;
		1942
		1943	$self->{load_original} = 1;
		1944	$self->{instantiate_time} = $cf::RUNTIME;
		1945	$self->last_access ($cf::RUNTIME);
		1946	$self->instantiate;
		1947	}
		1948
		1949	sub load_header {
		1950	my ($self) = @_;
		1951
		1952	if ($self->load_header_temp) {
		1953	$self->prepare_temp;
		1954	} else {
		1955	$self->load_header_orig
		1956	or return;
		1957	$self->prepare_orig;
		1958	}
		1959
		1960	$self->{deny_reset} = 1
		1961	if $self->no_reset;
		1962
		1963	$self->default_region (cf::region::find_by_path $self->{path})
		1964	unless $self->default_region;
		1965
		1966	1
		1967	}
		1968
		1969	sub find;
		1970	sub find {
		1971	my ($path, $origin) = @_;
		1972
		1973	$path = normalise $path, $origin && $origin->path;
		1974
		1975	cf::lock_wait "map_data:$path";#d#remove
		1976	cf::lock_wait "map_find:$path";
		1977
		1978	$cf::MAP{$path} || do {
		1979	my $guard1 = cf::lock_acquire "map_data:$path"; # just for the fun of it
		1980	my $guard2 = cf::lock_acquire "map_find:$path";
		1981
		1982	my $map = new_from_path cf::map $path
		1983	or return;
		1984
		1985	$map->{last_save} = $cf::RUNTIME;
		1986
		1987	$map->load_header
		1988	or return;
		1989
		1990	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1991	# doing this can freeze the server in a sync job, obviously
		1992	#$cf::WAIT_FOR_TICK->wait;
		1993	undef $guard2;
		1994	undef $guard1;
		1995	$map->reset;
		1996	return find $path;
		1997	}
		1998
		1999	$cf::MAP{$path} = $map
		2000	}
		2001	}
		2002
		2003	sub pre_load { }
		2004	sub post_load { }
		2005
		2006	sub load {
		2007	my ($self) = @_;
		2008
		2009	local $self->{deny_reset} = 1; # loading can take a long time
		2010
		2011	my $path = $self->{path};
		2012
		2013	{
		2014	my $guard = cf::lock_acquire "map_data:$path";
		2015
		2016	return unless $self->valid;
		2017	return unless $self->in_memory == cf::MAP_SWAPPED;
		2018
		2019	$self->in_memory (cf::MAP_LOADING);
		2020
		2021	$self->alloc;
		2022
		2023	$self->pre_load;
		2024	cf::cede_to_tick;
		2025
		2026	my $f = new_from_file cf::object::thawer $self->{load_path};
		2027	$f->skip_block;
		2028	$self->_load_objects ($f)
		2029	or return;
		2030
		2031	$self->post_load_original
		2032	if delete $self->{load_original};
		2033
		2034	if (my $uniq = $self->uniq_path) {
		2035	utf8::encode $uniq;
		2036	unless (aio_stat $uniq) {
		2037	if (my $f = new_from_file cf::object::thawer $uniq) {
		2038	$self->clear_unique_items;
		2039	$self->_load_objects ($f);
		2040	$f->resolve_delayed_derefs;
726	}	2041	}
727	}	2042	}
728	} else {
729	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
730	}	2043	}
731		2044
732	cf::override;	2045	$f->resolve_delayed_derefs;
		2046
		2047	cf::cede_to_tick;
		2048	# now do the right thing for maps
		2049	$self->link_multipart_objects;
		2050	$self->difficulty ($self->estimate_difficulty)
		2051	unless $self->difficulty;
		2052	cf::cede_to_tick;
		2053
		2054	unless ($self->{deny_activate}) {
		2055	$self->decay_objects;
		2056	$self->fix_auto_apply;
		2057	$self->update_buttons;
		2058	cf::cede_to_tick;
		2059	$self->set_darkness_map;
		2060	cf::cede_to_tick;
		2061	$self->activate;
		2062	}
		2063
		2064	$self->{last_save} = $cf::RUNTIME;
		2065	$self->last_access ($cf::RUNTIME);
		2066
		2067	$self->in_memory (cf::MAP_ACTIVE);
733	},	2068	}
734	;
735		2069
736	#############################################################################	2070	$self->post_load;
737	# load/save/clean perl data associated with a map	2071	}
738		2072
739	*cf::mapsupport::on_clean = sub {	2073	sub customise_for {
		2074	my ($self, $ob) = @_;
		2075
		2076	return find "~" . $ob->name . "/" . $self->{path}
		2077	if $self->per_player;
		2078
		2079	# return find "?party/" . $ob->name . "/" . $self->{path}
		2080	# if $self->per_party;
		2081
		2082	$self
		2083	}
		2084
		2085	# find and load all maps in the 3x3 area around a map
		2086	sub load_neighbours {
740	my ($map) = @_;	2087	my ($map) = @_;
741		2088
742	my $path = $map->tmpname;	2089	my @neigh; # diagonal neighbours
743	defined $path or return;
744		2090
745	unlink "$path.pst";	2091	for (0 .. 3) {
746	};	2092	my $neigh = $map->tile_path ($_)
		2093	or next;
		2094	$neigh = find $neigh, $map
		2095	or next;
		2096	$neigh->load;
747		2097
748	attach_to_maps prio => -10000, package => cf::mapsupport::;	2098	push @neigh,
		2099	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2100	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2101	}
749		2102
750	#############################################################################	2103	for (grep defined $_->[0], @neigh) {
751	# load/save perl data associated with player->ob objects	2104	my ($path, $origin) = @$_;
752		2105	my $neigh = find $path, $origin
753	sub all_objects(@) {	2106	or next;
754	@_, map all_objects ($_->inv), @_	2107	$neigh->load;
		2108	}
755	}	2109	}
756		2110
757	# TODO: compatibility cruft, remove when no longer needed	2111	sub find_sync {
758	attach_to_players	2112	my ($path, $origin) = @_;
759	on_load => sub {
760	my ($pl, $path) = @_;
761		2113
762	for my $o (all_objects $pl->ob) {	2114	cf::sync_job { find $path, $origin }
763	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2115	}
764	$o->set_ob_key_value ("_perl_data");
765		2116
766	%$o = %{ Storable::thaw pack "H*", $value };	2117	sub do_load_sync {
		2118	my ($map) = @_;
		2119
		2120	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2121	if $Coro::current == $Coro::main;
		2122
		2123	cf::sync_job { $map->load };
		2124	}
		2125
		2126	our %MAP_PREFETCH;
		2127	our $MAP_PREFETCHER = undef;
		2128
		2129	sub find_async {
		2130	my ($path, $origin, $load) = @_;
		2131
		2132	$path = normalise $path, $origin && $origin->{path};
		2133
		2134	if (my $map = $cf::MAP{$path}) {
		2135	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2136	}
		2137
		2138	$MAP_PREFETCH{$path} |= $load;
		2139
		2140	$MAP_PREFETCHER ||= cf::async {
		2141	$Coro::current->{desc} = "map prefetcher";
		2142
		2143	while (%MAP_PREFETCH) {
		2144	while (my ($k, $v) = each %MAP_PREFETCH) {
		2145	if (my $map = find $k) {
		2146	$map->load if $v;
		2147	}
		2148
		2149	delete $MAP_PREFETCH{$k};
767	}	2150	}
768	}	2151	}
		2152	undef $MAP_PREFETCHER;
		2153	};
		2154	$MAP_PREFETCHER->prio (6);
		2155
		2156	()
		2157	}
		2158
		2159	sub save {
		2160	my ($self) = @_;
		2161
		2162	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2163
		2164	$self->{last_save} = $cf::RUNTIME;
		2165
		2166	return unless $self->dirty;
		2167
		2168	my $save = $self->save_path; utf8::encode $save;
		2169	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2170
		2171	$self->{load_path} = $save;
		2172
		2173	return if $self->{deny_save};
		2174
		2175	local $self->{last_access} = $self->last_access;#d#
		2176
		2177	cf::async {
		2178	$Coro::current->{desc} = "map player save";
		2179	$_->contr->save for $self->players;
		2180	};
		2181
		2182	cf::get_slot 0.02;
		2183
		2184	if ($uniq) {
		2185	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2186	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2187	} else {
		2188	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
769	},	2189	}
770	;	2190	}
771		2191
772	#############################################################################	2192	sub swap_out {
		2193	my ($self) = @_;
773		2194
774	=head2 CORE EXTENSIONS	2195	# save first because save cedes
		2196	$self->save;
775		2197
776	Functions and methods that extend core crossfire objects.	2198	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2199
		2200	return if $self->players;
		2201	return if $self->in_memory != cf::MAP_ACTIVE;
		2202	return if $self->{deny_save};
		2203
		2204	$self->in_memory (cf::MAP_SWAPPED);
		2205
		2206	$self->deactivate;
		2207	$_->clear_links_to ($self) for values %cf::MAP;
		2208	$self->clear;
		2209	}
		2210
		2211	sub reset_at {
		2212	my ($self) = @_;
		2213
		2214	# TODO: safety, remove and allow resettable per-player maps
		2215	return 1e99 if $self->{deny_reset};
		2216
		2217	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2218	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2219
		2220	$time + $to
		2221	}
		2222
		2223	sub should_reset {
		2224	my ($self) = @_;
		2225
		2226	$self->reset_at <= $cf::RUNTIME
		2227	}
		2228
		2229	sub reset {
		2230	my ($self) = @_;
		2231
		2232	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2233
		2234	return if $self->players;
		2235
		2236	warn "resetting map ", $self->path;
		2237
		2238	$self->in_memory (cf::MAP_SWAPPED);
		2239
		2240	# need to save uniques path
		2241	unless ($self->{deny_save}) {
		2242	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2243
		2244	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2245	if $uniq;
		2246	}
		2247
		2248	delete $cf::MAP{$self->path};
		2249
		2250	$self->deactivate;
		2251	$_->clear_links_to ($self) for values %cf::MAP;
		2252	$self->clear;
		2253
		2254	$self->unlink_save;
		2255	$self->destroy;
		2256	}
		2257
		2258	my $nuke_counter = "aaaa";
		2259
		2260	sub nuke {
		2261	my ($self) = @_;
		2262
		2263	{
		2264	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2265
		2266	delete $cf::MAP{$self->path};
		2267
		2268	$self->unlink_save;
		2269
		2270	bless $self, "cf::map";
		2271	delete $self->{deny_reset};
		2272	$self->{deny_save} = 1;
		2273	$self->reset_timeout (1);
		2274	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2275
		2276	$cf::MAP{$self->path} = $self;
		2277	}
		2278
		2279	$self->reset; # polite request, might not happen
		2280	}
		2281
		2282	=item $maps = cf::map::tmp_maps
		2283
		2284	Returns an arrayref with all map paths of currently instantiated and saved
		2285	maps. May block.
		2286
		2287	=cut
		2288
		2289	sub tmp_maps() {
		2290	[
		2291	map {
		2292	utf8::decode $_;
		2293	/\.map$/
		2294	? normalise $_
		2295	: ()
		2296	} @{ aio_readdir $TMPDIR or [] }
		2297	]
		2298	}
		2299
		2300	=item $maps = cf::map::random_maps
		2301
		2302	Returns an arrayref with all map paths of currently instantiated and saved
		2303	random maps. May block.
		2304
		2305	=cut
		2306
		2307	sub random_maps() {
		2308	[
		2309	map {
		2310	utf8::decode $_;
		2311	/\.map$/
		2312	? normalise "?random/$_"
		2313	: ()
		2314	} @{ aio_readdir $RANDOMDIR or [] }
		2315	]
		2316	}
		2317
		2318	=item cf::map::unique_maps
		2319
		2320	Returns an arrayref of paths of all shared maps that have
		2321	instantiated unique items. May block.
		2322
		2323	=cut
		2324
		2325	sub unique_maps() {
		2326	[
		2327	map {
		2328	utf8::decode $_;
		2329	s/\.map$//; # TODO future compatibility hack
		2330	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2331	? ()
		2332	: normalise $_
		2333	} @{ aio_readdir $UNIQUEDIR or [] }
		2334	]
		2335	}
		2336
		2337	=back
		2338
		2339	=head3 cf::object
		2340
		2341	=cut
		2342
		2343	package cf::object;
777		2344
778	=over 4	2345	=over 4
779		2346
780	=item cf::player::exists $login	2347	=item $ob->inv_recursive
781		2348
782	Returns true when the given account exists.	2349	Returns the inventory of the object I<and> their inventories, recursively,
		2350	but I<not> the object itself.
783		2351
784	=cut	2352	=cut
785		2353
786	sub cf::player::exists($) {	2354	sub inv_recursive_;
787	cf::player::find $_[0]	2355	sub inv_recursive_ {
788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2356	map { $_, inv_recursive_ $_->inv } @_
789	}	2357	}
		2358
		2359	sub inv_recursive {
		2360	inv_recursive_ inv $_[0]
		2361	}
		2362
		2363	=item $ref = $ob->ref
		2364
		2365	Creates and returns a persistent reference to an object that can be stored as a string.
		2366
		2367	=item $ob = cf::object::deref ($refstring)
		2368
		2369	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2370	even if the object actually exists. May block.
		2371
		2372	=cut
		2373
		2374	sub deref {
		2375	my ($ref) = @_;
		2376
		2377	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2378	my ($uuid, $name) = ($1, $2);
		2379	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2380	or return;
		2381	$pl->ob->uuid eq $uuid
		2382	or return;
		2383
		2384	$pl->ob
		2385	} else {
		2386	warn "$ref: cannot resolve object reference\n";
		2387	undef
		2388	}
		2389	}
		2390
		2391	package cf;
		2392
		2393	=back
		2394
		2395	=head3 cf::object::player
		2396
		2397	=over 4
790		2398
791	=item $player_object->reply ($npc, $msg[, $flags])	2399	=item $player_object->reply ($npc, $msg[, $flags])
792		2400
793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2401	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
794	can be C<undef>. Does the right thing when the player is currently in a	2402	can be C<undef>. Does the right thing when the player is currently in a
795	dialogue with the given NPC character.	2403	dialogue with the given NPC character.
796		2404
797	=cut	2405	=cut
798		2406
		2407	our $SAY_CHANNEL = {
		2408	id => "say",
		2409	title => "Map",
		2410	reply => "say ",
		2411	tooltip => "Things said to and replied from npcs near you and other players on the same map only.",
		2412	};
		2413
		2414	our $CHAT_CHANNEL = {
		2415	id => "chat",
		2416	title => "Chat",
		2417	reply => "chat ",
		2418	tooltip => "Player chat and shouts, global to the server.",
		2419	};
		2420
799	# rough implementation of a future "reply" method that works	2421	# rough implementation of a future "reply" method that works
800	# with dialog boxes.	2422	# with dialog boxes.
		2423	#TODO: the first argument must go, split into a $npc->reply_to ( method
801	sub cf::object::player::reply($$$;$) {	2424	sub cf::object::player::reply($$$;$) {
802	my ($self, $npc, $msg, $flags) = @_;	2425	my ($self, $npc, $msg, $flags) = @_;
803		2426
804	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2427	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
805		2428
806	if ($self->{record_replies}) {	2429	if ($self->{record_replies}) {
807	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2430	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2431
808	} else {	2432	} else {
		2433	my $pl = $self->contr;
		2434
		2435	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2436	my $dialog = $pl->{npc_dialog};
		2437	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2438
		2439	} else {
809	$msg = $npc->name . " says: $msg" if $npc;	2440	$msg = $npc->name . " says: $msg" if $npc;
810	$self->message ($msg, $flags);	2441	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2442	}
811	}	2443	}
812	}	2444	}
813		2445
814	=item $player->ext_reply ($msgid, $msgtype, %msg)	2446	=item $object->send_msg ($channel, $msg, $color, [extra...])
815		2447
816	Sends an ext reply to the player.
817
818	=cut	2448	=cut
819		2449
820	sub cf::player::ext_reply($$$%) {	2450	sub cf::object::send_msg {
821	my ($self, $id, %msg) = @_;	2451	my $pl = shift->contr
822		2452	or return;
823	$msg{msgid} = $id;	2453	$pl->send_msg (@_);
824
825	$self->send ("ext " . to_json \%msg);
826	}	2454	}
827		2455
828	=item $player_object->may ("access")	2456	=item $player_object->may ("access")
829		2457
830	Returns wether the given player is authorized to access resource "access"	2458	Returns wether the given player is authorized to access resource "access"
…		…
839	(ref $cf::CFG{"may_$access"}	2467	(ref $cf::CFG{"may_$access"}
840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2468	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
841	: $cf::CFG{"may_$access"})	2469	: $cf::CFG{"may_$access"})
842	}	2470	}
843		2471
844	=cut	2472	=item $player_object->enter_link
845		2473
846	#############################################################################	2474	Freezes the player and moves him/her to a special map (C<{link}>).
		2475
		2476	The player should be reasonably safe there for short amounts of time (e.g.
		2477	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2478	though, as the palyer cannot control the character while it is on the link
		2479	map.
		2480
		2481	Will never block.
		2482
		2483	=item $player_object->leave_link ($map, $x, $y)
		2484
		2485	Moves the player out of the special C<{link}> map onto the specified
		2486	map. If the map is not valid (or omitted), the player will be moved back
		2487	to the location he/she was before the call to C<enter_link>, or, if that
		2488	fails, to the emergency map position.
		2489
		2490	Might block.
		2491
		2492	=cut
		2493
		2494	sub link_map {
		2495	unless ($LINK_MAP) {
		2496	$LINK_MAP = cf::map::find "{link}"
		2497	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2498	$LINK_MAP->load;
		2499	}
		2500
		2501	$LINK_MAP
		2502	}
		2503
		2504	sub cf::object::player::enter_link {
		2505	my ($self) = @_;
		2506
		2507	$self->deactivate_recursive;
		2508
		2509	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2510
		2511	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2512	if $self->map && $self->map->{path} ne "{link}";
		2513
		2514	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2515	}
		2516
		2517	sub cf::object::player::leave_link {
		2518	my ($self, $map, $x, $y) = @_;
		2519
		2520	return unless $self->contr->active;
		2521
		2522	my $link_pos = delete $self->{_link_pos};
		2523
		2524	unless ($map) {
		2525	# restore original map position
		2526	($map, $x, $y) = @{ $link_pos || [] };
		2527	$map = cf::map::find $map;
		2528
		2529	unless ($map) {
		2530	($map, $x, $y) = @$EMERGENCY_POSITION;
		2531	$map = cf::map::find $map
		2532	or die "FATAL: cannot load emergency map\n";
		2533	}
		2534	}
		2535
		2536	($x, $y) = (-1, -1)
		2537	unless (defined $x) && (defined $y);
		2538
		2539	# use -1 or undef as default coordinates, not 0, 0
		2540	($x, $y) = ($map->enter_x, $map->enter_y)
		2541	if $x <=0 && $y <= 0;
		2542
		2543	$map->load;
		2544	$map->load_neighbours;
		2545
		2546	return unless $self->contr->active;
		2547	$self->flag (cf::FLAG_DEBUG, 0);#d# temp
		2548	$self->activate_recursive;
		2549
		2550	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2551	$self->enter_map ($map, $x, $y);
		2552	}
		2553
		2554	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2555
		2556	Moves the player to the given map-path and coordinates by first freezing
		2557	her, loading and preparing them map, calling the provided $check callback
		2558	that has to return the map if sucecssful, and then unfreezes the player on
		2559	the new (success) or old (failed) map position. In either case, $done will
		2560	be called at the end of this process.
		2561
		2562	Note that $check will be called with a potentially non-loaded map, so if
		2563	it needs a loaded map it has to call C<< ->load >>.
		2564
		2565	=cut
		2566
		2567	our $GOTOGEN;
		2568
		2569	sub cf::object::player::goto {
		2570	my ($self, $path, $x, $y, $check, $done) = @_;
		2571
		2572	# do generation counting so two concurrent goto's will be executed in-order
		2573	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2574
		2575	$self->enter_link;
		2576
		2577	(async {
		2578	$Coro::current->{desc} = "player::goto $path $x $y";
		2579
		2580	# *tag paths override both path and x|y
		2581	if ($path =~ /^\*(.*)$/) {
		2582	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2583	my $ob = $obs[rand @obs];
		2584
		2585	# see if we actually can go there
		2586	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2587	$ob = $obs[rand @obs];
		2588	} else {
		2589	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2590	}
		2591	# else put us there anyways for now #d#
		2592
		2593	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2594	} else {
		2595	($path, $x, $y) = (undef, undef, undef);
		2596	}
		2597	}
		2598
		2599	my $map = eval {
		2600	my $map = defined $path ? cf::map::find $path : undef;
		2601
		2602	if ($map) {
		2603	$map = $map->customise_for ($self);
		2604	$map = $check->($map) if $check && $map;
		2605	} else {
		2606	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2607	}
		2608
		2609	$map
		2610	};
		2611
		2612	if ($@) {
		2613	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2614	LOG llevError | logBacktrace, Carp::longmess $@;
		2615	}
		2616
		2617	if ($gen == $self->{_goto_generation}) {
		2618	delete $self->{_goto_generation};
		2619	$self->leave_link ($map, $x, $y);
		2620	}
		2621
		2622	$done->() if $done;
		2623	})->prio (1);
		2624	}
		2625
		2626	=item $player_object->enter_exit ($exit_object)
		2627
		2628	=cut
		2629
		2630	sub parse_random_map_params {
		2631	my ($spec) = @_;
		2632
		2633	my $rmp = { # defaults
		2634	xsize => (cf::rndm 15, 40),
		2635	ysize => (cf::rndm 15, 40),
		2636	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2637	#layout => string,
		2638	};
		2639
		2640	for (split /\n/, $spec) {
		2641	my ($k, $v) = split /\s+/, $_, 2;
		2642
		2643	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2644	}
		2645
		2646	$rmp
		2647	}
		2648
		2649	sub prepare_random_map {
		2650	my ($exit) = @_;
		2651
		2652	# all this does is basically replace the /! path by
		2653	# a new random map path (?random/...) with a seed
		2654	# that depends on the exit object
		2655
		2656	my $rmp = parse_random_map_params $exit->msg;
		2657
		2658	if ($exit->map) {
		2659	$rmp->{region} = $exit->region->name;
		2660	$rmp->{origin_map} = $exit->map->path;
		2661	$rmp->{origin_x} = $exit->x;
		2662	$rmp->{origin_y} = $exit->y;
		2663
		2664	$exit->map->touch;
		2665	}
		2666
		2667	$rmp->{random_seed} ||= $exit->random_seed;
		2668
		2669	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2670	my $md5 = Digest::MD5::md5_hex $data;
		2671	my $meta = "$RANDOMDIR/$md5.meta";
		2672
		2673	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2674	aio_write $fh, 0, (length $data), $data, 0;
		2675	undef $fh;
		2676	aio_rename "$meta~", $meta;
		2677
		2678	my $slaying = "?random/$md5";
		2679
		2680	if ($exit->valid) {
		2681	$exit->slaying ("?random/$md5");
		2682	$exit->msg (undef);
		2683	}
		2684	}
		2685	}
		2686
		2687	sub cf::object::player::enter_exit {
		2688	my ($self, $exit) = @_;
		2689
		2690	return unless $self->type == cf::PLAYER;
		2691
		2692	$self->enter_link;
		2693
		2694	(async {
		2695	$Coro::current->{desc} = "enter_exit";
		2696
		2697	unless (eval {
		2698	$self->deactivate_recursive; # just to be sure
		2699
		2700	# random map handling
		2701	{
		2702	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2703
		2704	prepare_random_map $exit
		2705	if $exit->slaying eq "/!";
		2706	}
		2707
		2708	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2709	my $x = $exit->stats->hp;
		2710	my $y = $exit->stats->sp;
		2711
		2712	$self->goto ($map, $x, $y);
		2713
		2714	# if exit is damned, update players death & WoR home-position
		2715	$self->contr->savebed ($map, $x, $y)
		2716	if $exit->flag (cf::FLAG_DAMNED);
		2717
		2718	1
		2719	}) {
		2720	$self->message ("Something went wrong deep within the deliantra server. "
		2721	. "I'll try to bring you back to the map you were before. "
		2722	. "Please report this to the dungeon master!",
		2723	cf::NDI_UNIQUE | cf::NDI_RED);
		2724
		2725	warn "ERROR in enter_exit: $@";
		2726	$self->leave_link;
		2727	}
		2728	})->prio (1);
		2729	}
		2730
		2731	=head3 cf::client
		2732
		2733	=over 4
		2734
		2735	=item $client->send_drawinfo ($text, $flags)
		2736
		2737	Sends a drawinfo packet to the client. Circumvents output buffering so
		2738	should not be used under normal circumstances.
		2739
		2740	=cut
		2741
		2742	sub cf::client::send_drawinfo {
		2743	my ($self, $text, $flags) = @_;
		2744
		2745	utf8::encode $text;
		2746	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2747	}
		2748
		2749	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2750
		2751	Send a drawinfo or msg packet to the client, formatting the msg for the
		2752	client if neccessary. C<$type> should be a string identifying the type of
		2753	the message, with C<log> being the default. If C<$color> is negative, suppress
		2754	the message unless the client supports the msg packet.
		2755
		2756	=cut
		2757
		2758	# non-persistent channels (usually the info channel)
		2759	our %CHANNEL = (
		2760	"c/identify" => {
		2761	id => "infobox",
		2762	title => "Identify",
		2763	reply => undef,
		2764	tooltip => "Items recently identified",
		2765	},
		2766	"c/examine" => {
		2767	id => "infobox",
		2768	title => "Examine",
		2769	reply => undef,
		2770	tooltip => "Signs and other items you examined",
		2771	},
		2772	"c/book" => {
		2773	id => "infobox",
		2774	title => "Book",
		2775	reply => undef,
		2776	tooltip => "The contents of a note or book",
		2777	},
		2778	"c/lookat" => {
		2779	id => "infobox",
		2780	title => "Look",
		2781	reply => undef,
		2782	tooltip => "What you saw there",
		2783	},
		2784	"c/who" => {
		2785	id => "infobox",
		2786	title => "Players",
		2787	reply => undef,
		2788	tooltip => "Shows players who are currently online",
		2789	},
		2790	"c/body" => {
		2791	id => "infobox",
		2792	title => "Body Parts",
		2793	reply => undef,
		2794	tooltip => "Shows which body parts you posess and are available",
		2795	},
		2796	"c/skills" => {
		2797	id => "infobox",
		2798	title => "Skills",
		2799	reply => undef,
		2800	tooltip => "Shows your experience per skill and item power",
		2801	},
		2802	"c/uptime" => {
		2803	id => "infobox",
		2804	title => "Uptime",
		2805	reply => undef,
		2806	tooltip => "How long the server has been running since last restart",
		2807	},
		2808	"c/mapinfo" => {
		2809	id => "infobox",
		2810	title => "Map Info",
		2811	reply => undef,
		2812	tooltip => "Information related to the maps",
		2813	},
		2814	"c/party" => {
		2815	id => "party",
		2816	title => "Party",
		2817	reply => "gsay ",
		2818	tooltip => "Messages and chat related to your party",
		2819	},
		2820	);
		2821
		2822	sub cf::client::send_msg {
		2823	my ($self, $channel, $msg, $color, @extra) = @_;
		2824
		2825	$msg = $self->pl->expand_cfpod ($msg)
		2826	unless $color & cf::NDI_VERBATIM;
		2827
		2828	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2829
		2830	# check predefined channels, for the benefit of C
		2831	if ($CHANNEL{$channel}) {
		2832	$channel = $CHANNEL{$channel};
		2833
		2834	$self->ext_msg (channel_info => $channel)
		2835	if $self->can_msg;
		2836
		2837	$channel = $channel->{id};
		2838
		2839	} elsif (ref $channel) {
		2840	# send meta info to client, if not yet sent
		2841	unless (exists $self->{channel}{$channel->{id}}) {
		2842	$self->{channel}{$channel->{id}} = $channel;
		2843	$self->ext_msg (channel_info => $channel)
		2844	if $self->can_msg;
		2845	}
		2846
		2847	$channel = $channel->{id};
		2848	}
		2849
		2850	return unless @extra || length $msg;
		2851
		2852	if ($self->can_msg) {
		2853	# default colour, mask it out
		2854	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2855	if $color & cf::NDI_DEF;
		2856
		2857	my $pkt = "msg "
		2858	. $self->{json_coder}->encode (
		2859	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2860	);
		2861
		2862	# try lzf for large packets
		2863	$pkt = "lzf " . Compress::LZF::compress $pkt
		2864	if 1024 <= length $pkt and $self->{can_lzf};
		2865
		2866	# split very large packets
		2867	if (8192 < length $pkt and $self->{can_lzf}) {
		2868	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2869	$pkt = "frag";
		2870	}
		2871
		2872	$self->send_packet ($pkt);
		2873	} else {
		2874	if ($color >= 0) {
		2875	# replace some tags by gcfclient-compatible ones
		2876	for ($msg) {
		2877	1 while
		2878	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2879	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2880	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2881	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2882	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2883	}
		2884
		2885	$color &= cf::NDI_COLOR_MASK;
		2886
		2887	utf8::encode $msg;
		2888
		2889	if (0 && $msg =~ /\[/) {
		2890	# COMMAND/INFO
		2891	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2892	} else {
		2893	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2894	$self->send_packet ("drawinfo $color $msg")
		2895	}
		2896	}
		2897	}
		2898	}
		2899
		2900	=item $client->ext_msg ($type, @msg)
		2901
		2902	Sends an ext event to the client.
		2903
		2904	=cut
		2905
		2906	sub cf::client::ext_msg($$@) {
		2907	my ($self, $type, @msg) = @_;
		2908
		2909	if ($self->extcmd == 2) {
		2910	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2911	} elsif ($self->extcmd == 1) { # TODO: remove
		2912	push @msg, msgtype => "event_$type";
		2913	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2914	}
		2915	}
		2916
		2917	=item $client->ext_reply ($msgid, @msg)
		2918
		2919	Sends an ext reply to the client.
		2920
		2921	=cut
		2922
		2923	sub cf::client::ext_reply($$@) {
		2924	my ($self, $id, @msg) = @_;
		2925
		2926	if ($self->extcmd == 2) {
		2927	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2928	} elsif ($self->extcmd == 1) {
		2929	#TODO: version 1, remove
		2930	unshift @msg, msgtype => "reply", msgid => $id;
		2931	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2932	}
		2933	}
		2934
		2935	=item $success = $client->query ($flags, "text", \&cb)
		2936
		2937	Queues a query to the client, calling the given callback with
		2938	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2939	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2940
		2941	Queries can fail, so check the return code. Or don't, as queries will
		2942	become reliable at some point in the future.
		2943
		2944	=cut
		2945
		2946	sub cf::client::query {
		2947	my ($self, $flags, $text, $cb) = @_;
		2948
		2949	return unless $self->state == ST_PLAYING
		2950	|| $self->state == ST_SETUP
		2951	|| $self->state == ST_CUSTOM;
		2952
		2953	$self->state (ST_CUSTOM);
		2954
		2955	utf8::encode $text;
		2956	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2957
		2958	$self->send_packet ($self->{query_queue}[0][0])
		2959	if @{ $self->{query_queue} } == 1;
		2960
		2961	1
		2962	}
		2963
		2964	cf::client->attach (
		2965	on_connect => sub {
		2966	my ($ns) = @_;
		2967
		2968	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2969	},
		2970	on_reply => sub {
		2971	my ($ns, $msg) = @_;
		2972
		2973	# this weird shuffling is so that direct followup queries
		2974	# get handled first
		2975	my $queue = delete $ns->{query_queue}
		2976	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2977
		2978	(shift @$queue)->[1]->($msg);
		2979	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2980
		2981	push @{ $ns->{query_queue} }, @$queue;
		2982
		2983	if (@{ $ns->{query_queue} } == @$queue) {
		2984	if (@$queue) {
		2985	$ns->send_packet ($ns->{query_queue}[0][0]);
		2986	} else {
		2987	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2988	}
		2989	}
		2990	},
		2991	on_exticmd => sub {
		2992	my ($ns, $buf) = @_;
		2993
		2994	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2995
		2996	if (ref $msg) {
		2997	my ($type, $reply, @payload) =
		2998	"ARRAY" eq ref $msg
		2999	? @$msg
		3000	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3001
		3002	my @reply;
		3003
		3004	if (my $cb = $EXTICMD{$type}) {
		3005	@reply = $cb->($ns, @payload);
		3006	}
		3007
		3008	$ns->ext_reply ($reply, @reply)
		3009	if $reply;
		3010
		3011	} else {
		3012	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3013	}
		3014
		3015	cf::override;
		3016	},
		3017	);
		3018
		3019	=item $client->async (\&cb)
		3020
		3021	Create a new coroutine, running the specified callback. The coroutine will
		3022	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3023	or loss of connection).
		3024
		3025	=cut
		3026
		3027	sub cf::client::async {
		3028	my ($self, $cb) = @_;
		3029
		3030	my $coro = &Coro::async ($cb);
		3031
		3032	$coro->on_destroy (sub {
		3033	delete $self->{_coro}{$coro+0};
		3034	});
		3035
		3036	$self->{_coro}{$coro+0} = $coro;
		3037
		3038	$coro
		3039	}
		3040
		3041	cf::client->attach (
		3042	on_destroy => sub {
		3043	my ($ns) = @_;
		3044
		3045	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3046	},
		3047	);
		3048
		3049	=back
		3050
847		3051
848	=head2 SAFE SCRIPTING	3052	=head2 SAFE SCRIPTING
849		3053
850	Functions that provide a safe environment to compile and execute	3054	Functions that provide a safe environment to compile and execute
851	snippets of perl code without them endangering the safety of the server	3055	snippets of perl code without them endangering the safety of the server
…		…
858	our $safe = new Safe "safe";	3062	our $safe = new Safe "safe";
859	our $safe_hole = new Safe::Hole;	3063	our $safe_hole = new Safe::Hole;
860		3064
861	$SIG{FPE} = 'IGNORE';	3065	$SIG{FPE} = 'IGNORE';
862		3066
863	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3067	$safe->permit_only (Opcode::opset qw(
		3068	:base_core :base_mem :base_orig :base_math
		3069	grepstart grepwhile mapstart mapwhile
		3070	sort time
		3071	));
864		3072
865	# here we export the classes and methods available to script code	3073	# here we export the classes and methods available to script code
866		3074
867	=pod	3075	=pod
868		3076
869	The following fucntions and emthods are available within a safe environment:	3077	The following functions and methods are available within a safe environment:
870		3078
871	cf::object contr pay_amount pay_player	3079	cf::object
		3080	contr pay_amount pay_player map x y force_find force_add destroy
		3081	insert remove name archname title slaying race decrease split
		3082
872	cf::object::player player	3083	cf::object::player
873	cf::player peaceful	3084	player
		3085
		3086	cf::player
		3087	peaceful
		3088
		3089	cf::map
		3090	trigger
874		3091
875	=cut	3092	=cut
876		3093
877	for (	3094	for (
878	["cf::object" => qw(contr pay_amount pay_player)],	3095	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3096	insert remove inv nrof name archname title slaying race
		3097	decrease split destroy change_exp)],
879	["cf::object::player" => qw(player)],	3098	["cf::object::player" => qw(player)],
880	["cf::player" => qw(peaceful)],	3099	["cf::player" => qw(peaceful)],
		3100	["cf::map" => qw(trigger)],
881	) {	3101	) {
882	no strict 'refs';	3102	no strict 'refs';
883	my ($pkg, @funs) = @$_;	3103	my ($pkg, @funs) = @$_;
884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3104	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
885	for @funs;	3105	for @funs;
…		…
953	=back	3173	=back
954		3174
955	=cut	3175	=cut
956		3176
957	#############################################################################	3177	#############################################################################
		3178	# the server's init and main functions
958		3179
959	=head2 EXTENSION DATABASE SUPPORT	3180	sub load_facedata($) {
		3181	my ($path) = @_;
960		3182
961	Crossfire maintains a very simple database for extension use. It can	3183	# HACK to clear player env face cache, we need some signal framework
962	currently store anything that can be serialised using Storable, which	3184	# for this (global event?)
963	excludes objects.	3185	%ext::player_env::MUSIC_FACE_CACHE = ();
964		3186
965	The parameter C<$family> should best start with the name of the extension	3187	my $enc = JSON::XS->new->utf8->canonical->relaxed;
966	using it, it should be unique.
967		3188
968	=over 4	3189	warn "loading facedata from $path\n";
969		3190
970	=item $hashref = cf::db_get $family	3191	my $facedata;
		3192	0 < aio_load $path, $facedata
		3193	or die "$path: $!";
971		3194
972	Return a hashref for use by the extension C<$family>, which can be	3195	$facedata = Coro::Storable::thaw $facedata;
973	modified. After modifications, you have to call C<cf::db_dirty> or
974	C<cf::db_sync>.
975		3196
976	=item $value = cf::db_get $family => $key	3197	$facedata->{version} == 2
		3198	or cf::cleanup "$path: version mismatch, cannot proceed.";
977		3199
978	Returns a single value from the database	3200	# patch in the exptable
		3201	$facedata->{resource}{"res/exp_table"} = {
		3202	type => FT_RSRC,
		3203	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3204	};
		3205	cf::cede_to_tick;
979		3206
980	=item cf::db_put $family => $hashref	3207	{
		3208	my $faces = $facedata->{faceinfo};
981		3209
982	Stores the given family hashref into the database. Updates are delayed, if	3210	while (my ($face, $info) = each %$faces) {
983	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3211	my $idx = (cf::face::find $face) || cf::face::alloc $face;
984		3212
985	=item cf::db_put $family => $key => $value	3213	cf::face::set_visibility $idx, $info->{visibility};
		3214	cf::face::set_magicmap $idx, $info->{magicmap};
		3215	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3216	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
986		3217
987	Stores the given C<$value> in the family hash. Updates are delayed, if you	3218	cf::cede_to_tick;
988	want the data to be synced to disk immediately, use C<cf::db_sync>.	3219	}
989		3220
990	=item cf::db_dirty	3221	while (my ($face, $info) = each %$faces) {
		3222	next unless $info->{smooth};
991		3223
992	Marks the database as dirty, to be updated at a later time.	3224	my $idx = cf::face::find $face
		3225	or next;
993		3226
994	=item cf::db_sync	3227	if (my $smooth = cf::face::find $info->{smooth}) {
		3228	cf::face::set_smooth $idx, $smooth;
		3229	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3230	} else {
		3231	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3232	}
995		3233
996	Immediately write the database to disk I<if it is dirty>.	3234	cf::cede_to_tick;
		3235	}
		3236	}
997		3237
998	=cut	3238	{
		3239	my $anims = $facedata->{animinfo};
999		3240
1000	our $DB;	3241	while (my ($anim, $info) = each %$anims) {
		3242	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3243	cf::cede_to_tick;
		3244	}
		3245
		3246	cf::anim::invalidate_all; # d'oh
		3247	}
		3248
		3249	{
		3250	# TODO: for gcfclient pleasure, we should give resources
		3251	# that gcfclient doesn't grok a >10000 face index.
		3252	my $res = $facedata->{resource};
		3253
		3254	while (my ($name, $info) = each %$res) {
		3255	if (defined $info->{type}) {
		3256	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3257	my $data;
		3258
		3259	if ($info->{type} & 1) {
		3260	# prepend meta info
		3261
		3262	my $meta = $enc->encode ({
		3263	name => $name,
		3264	%{ $info->{meta} || {} },
		3265	});
		3266
		3267	$data = pack "(w/a*)*", $meta, $info->{data};
		3268	} else {
		3269	$data = $info->{data};
		3270	}
		3271
		3272	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3273	cf::face::set_type $idx, $info->{type};
		3274	} else {
		3275	$RESOURCE{$name} = $info;
		3276	}
		3277
		3278	cf::cede_to_tick;
		3279	}
		3280	}
		3281
		3282	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3283
		3284	1
		3285	}
		3286
		3287	cf::global->attach (on_resource_update => sub {
		3288	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3289	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3290
		3291	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3292	my $sound = $soundconf->{compat}[$_]
		3293	or next;
		3294
		3295	my $face = cf::face::find "sound/$sound->[1]";
		3296	cf::sound::set $sound->[0] => $face;
		3297	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3298	}
		3299
		3300	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3301	my $face = cf::face::find "sound/$v";
		3302	cf::sound::set $k => $face;
		3303	}
		3304	}
		3305	});
		3306
		3307	register_exticmd fx_want => sub {
		3308	my ($ns, $want) = @_;
		3309
		3310	while (my ($k, $v) = each %$want) {
		3311	$ns->fx_want ($k, $v);
		3312	}
		3313	};
		3314
		3315	sub load_resource_file($) {
		3316	my $guard = lock_acquire "load_resource_file";
		3317
		3318	my $status = load_resource_file_ $_[0];
		3319	get_slot 0.1, 100;
		3320	cf::arch::commit_load;
		3321
		3322	$status
		3323	}
		3324
		3325	sub reload_regions {
		3326	# HACK to clear player env face cache, we need some signal framework
		3327	# for this (global event?)
		3328	%ext::player_env::MUSIC_FACE_CACHE = ();
		3329
		3330	load_resource_file "$MAPDIR/regions"
		3331	or die "unable to load regions file\n";
		3332
		3333	for (cf::region::list) {
		3334	$_->{match} = qr/$_->{match}/
		3335	if exists $_->{match};
		3336	}
		3337	}
		3338
		3339	sub reload_facedata {
		3340	load_facedata "$DATADIR/facedata"
		3341	or die "unable to load facedata\n";
		3342	}
		3343
		3344	sub reload_archetypes {
		3345	load_resource_file "$DATADIR/archetypes"
		3346	or die "unable to load archetypes\n";
		3347	}
		3348
		3349	sub reload_treasures {
		3350	load_resource_file "$DATADIR/treasures"
		3351	or die "unable to load treasurelists\n";
		3352	}
		3353
		3354	sub reload_resources {
		3355	warn "reloading resource files...\n";
		3356
		3357	reload_facedata;
		3358	reload_archetypes;
		3359	reload_regions;
		3360	reload_treasures;
		3361
		3362	warn "finished reloading resource files\n";
		3363	}
		3364
		3365	sub reload_config {
		3366	open my $fh, "<:utf8", "$CONFDIR/config"
		3367	or return;
		3368
		3369	local $/;
		3370	*CFG = YAML::Load <$fh>;
		3371
		3372	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3373
		3374	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3375	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3376
		3377	if (exists $CFG{mlockall}) {
		3378	eval {
		3379	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3380	and die "WARNING: m(un)lockall failed: $!\n";
		3381	};
		3382	warn $@ if $@;
		3383	}
		3384	}
		3385
		3386	sub pidfile() {
		3387	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3388	or die "$PIDFILE: $!";
		3389	flock $fh, &Fcntl::LOCK_EX
		3390	or die "$PIDFILE: flock: $!";
		3391	$fh
		3392	}
		3393
		3394	# make sure only one server instance is running at any one time
		3395	sub atomic {
		3396	my $fh = pidfile;
		3397
		3398	my $pid = <$fh>;
		3399	kill 9, $pid if $pid > 0;
		3400
		3401	seek $fh, 0, 0;
		3402	print $fh $$;
		3403	}
		3404
		3405	sub main {
		3406	cf::init_globals; # initialise logging
		3407
		3408	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3409	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3410	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3411	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3412
		3413	cf::init_experience;
		3414	cf::init_anim;
		3415	cf::init_attackmess;
		3416	cf::init_dynamic;
		3417	cf::init_block;
		3418
		3419	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3420
		3421	# we must not ever block the main coroutine
		3422	local $Coro::idle = sub {
		3423	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3424	(async {
		3425	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3426	EV::loop EV::LOOP_ONESHOT;
		3427	})->prio (Coro::PRIO_MAX);
		3428	};
		3429
		3430	evthread_start IO::AIO::poll_fileno;
		3431
		3432	cf::sync_job {
		3433	reload_resources;
		3434	reload_config;
		3435	db_init;
		3436
		3437	cf::load_settings;
		3438	cf::load_materials;
		3439	cf::init_uuid;
		3440	cf::init_signals;
		3441	cf::init_commands;
		3442	cf::init_skills;
		3443
		3444	cf::init_beforeplay;
		3445
		3446	atomic;
		3447
		3448	load_extensions;
		3449
		3450	utime time, time, $RUNTIMEFILE;
		3451
		3452	# no (long-running) fork's whatsoever before this point(!)
		3453	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3454
		3455	(pop @POST_INIT)->(0) while @POST_INIT;
		3456	};
		3457
		3458	EV::loop;
		3459	}
		3460
		3461	#############################################################################
		3462	# initialisation and cleanup
		3463
		3464	# install some emergency cleanup handlers
		3465	BEGIN {
		3466	our %SIGWATCHER = ();
		3467	for my $signal (qw(INT HUP TERM)) {
		3468	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3469	cf::cleanup "SIG$signal";
		3470	};
		3471	}
		3472	}
		3473
		3474	sub write_runtime_sync {
		3475	# first touch the runtime file to show we are still running:
		3476	# the fsync below can take a very very long time.
		3477
		3478	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3479
		3480	my $guard = cf::lock_acquire "write_runtime";
		3481
		3482	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3483	or return;
		3484
		3485	my $value = $cf::RUNTIME + 90 + 10;
		3486	# 10 is the runtime save interval, for a monotonic clock
		3487	# 60 allows for the watchdog to kill the server.
		3488
		3489	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3490	and return;
		3491
		3492	# always fsync - this file is important
		3493	aio_fsync $fh
		3494	and return;
		3495
		3496	# touch it again to show we are up-to-date
		3497	aio_utime $fh, undef, undef;
		3498
		3499	close $fh
		3500	or return;
		3501
		3502	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3503	and return;
		3504
		3505	warn "runtime file written.\n";
		3506
		3507	1
		3508	}
		3509
		3510	our $uuid_lock;
		3511	our $uuid_skip;
		3512
		3513	sub write_uuid_sync($) {
		3514	$uuid_skip ||= $_[0];
		3515
		3516	return if $uuid_lock;
		3517	local $uuid_lock = 1;
		3518
		3519	my $uuid = "$LOCALDIR/uuid";
		3520
		3521	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3522	or return;
		3523
		3524	my $value = uuid_seq uuid_cur;
		3525
		3526	unless ($value) {
		3527	warn "cowardly refusing to write zero uuid value!\n";
		3528	return;
		3529	}
		3530
		3531	my $value = uuid_str $value + $uuid_skip;
		3532	$uuid_skip = 0;
		3533
		3534	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3535	and return;
		3536
		3537	# always fsync - this file is important
		3538	aio_fsync $fh
		3539	and return;
		3540
		3541	close $fh
		3542	or return;
		3543
		3544	aio_rename "$uuid~", $uuid
		3545	and return;
		3546
		3547	warn "uuid file written ($value).\n";
		3548
		3549	1
		3550
		3551	}
		3552
		3553	sub write_uuid($$) {
		3554	my ($skip, $sync) = @_;
		3555
		3556	$sync ? write_uuid_sync $skip
		3557	: async { write_uuid_sync $skip };
		3558	}
		3559
		3560	sub emergency_save() {
		3561	my $freeze_guard = cf::freeze_mainloop;
		3562
		3563	warn "enter emergency perl save\n";
		3564
		3565	cf::sync_job {
		3566	# use a peculiar iteration method to avoid tripping on perl
		3567	# refcount bugs in for. also avoids problems with players
		3568	# and maps saved/destroyed asynchronously.
		3569	warn "begin emergency player save\n";
		3570	for my $login (keys %cf::PLAYER) {
		3571	my $pl = $cf::PLAYER{$login} or next;
		3572	$pl->valid or next;
		3573	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3574	$pl->save;
		3575	}
		3576	warn "end emergency player save\n";
		3577
		3578	warn "begin emergency map save\n";
		3579	for my $path (keys %cf::MAP) {
		3580	my $map = $cf::MAP{$path} or next;
		3581	$map->valid or next;
		3582	$map->save;
		3583	}
		3584	warn "end emergency map save\n";
		3585
		3586	warn "begin emergency database checkpoint\n";
		3587	BDB::db_env_txn_checkpoint $DB_ENV;
		3588	warn "end emergency database checkpoint\n";
		3589
		3590	warn "begin write uuid\n";
		3591	write_uuid_sync 1;
		3592	warn "end write uuid\n";
		3593	};
		3594
		3595	warn "leave emergency perl save\n";
		3596	}
		3597
		3598	sub post_cleanup {
		3599	my ($make_core) = @_;
		3600
		3601	warn Carp::longmess "post_cleanup backtrace"
		3602	if $make_core;
		3603
		3604	my $fh = pidfile;
		3605	unlink $PIDFILE if <$fh> == $$;
		3606	}
		3607
		3608	# a safer delete_package, copied from Symbol
		3609	sub clear_package($) {
		3610	my $pkg = shift;
		3611
		3612	# expand to full symbol table name if needed
		3613	unless ($pkg =~ /^main::.*::$/) {
		3614	$pkg = "main$pkg" if $pkg =~ /^::/;
		3615	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3616	$pkg .= '::' unless $pkg =~ /::$/;
		3617	}
		3618
		3619	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3620	my $stem_symtab = *{$stem}{HASH};
		3621
		3622	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3623	or return;
		3624
		3625	# clear all symbols
		3626	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3627	for my $name (keys %$leaf_symtab) {
		3628	_gv_clear *{"$pkg$name"};
		3629	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3630	}
		3631	warn "cleared package $pkg\n";#d#
		3632	}
		3633
		3634	sub do_reload_perl() {
		3635	# can/must only be called in main
		3636	if ($Coro::current != $Coro::main) {
		3637	warn "can only reload from main coroutine";
		3638	return;
		3639	}
		3640
		3641	return if $RELOAD++;
		3642
		3643	while ($RELOAD) {
		3644	warn "reloading...";
		3645
		3646	warn "entering sync_job";
		3647
		3648	cf::sync_job {
		3649	cf::write_runtime_sync; # external watchdog should not bark
		3650	cf::emergency_save;
		3651	cf::write_runtime_sync; # external watchdog should not bark
		3652
		3653	warn "syncing database to disk";
		3654	BDB::db_env_txn_checkpoint $DB_ENV;
		3655
		3656	# if anything goes wrong in here, we should simply crash as we already saved
		3657
		3658	warn "flushing outstanding aio requests";
		3659	while (IO::AIO::nreqs || BDB::nreqs) {
		3660	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3661	}
		3662
		3663	warn "cancelling all extension coros";
		3664	$_->cancel for values %EXT_CORO;
		3665	%EXT_CORO = ();
		3666
		3667	warn "removing commands";
		3668	%COMMAND = ();
		3669
		3670	warn "removing ext/exti commands";
		3671	%EXTCMD = ();
		3672	%EXTICMD = ();
		3673
		3674	warn "unloading/nuking all extensions";
		3675	for my $pkg (@EXTS) {
		3676	warn "... unloading $pkg";
		3677
		3678	if (my $cb = $pkg->can ("unload")) {
		3679	eval {
		3680	$cb->($pkg);
		3681	1
		3682	} or warn "$pkg unloaded, but with errors: $@";
		3683	}
		3684
		3685	warn "... clearing $pkg";
		3686	clear_package $pkg;
		3687	}
		3688
		3689	warn "unloading all perl modules loaded from $LIBDIR";
		3690	while (my ($k, $v) = each %INC) {
		3691	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3692
		3693	warn "... unloading $k";
		3694	delete $INC{$k};
		3695
		3696	$k =~ s/\.pm$//;
		3697	$k =~ s/\//::/g;
		3698
		3699	if (my $cb = $k->can ("unload_module")) {
		3700	$cb->();
		3701	}
		3702
		3703	clear_package $k;
		3704	}
		3705
		3706	warn "getting rid of safe::, as good as possible";
		3707	clear_package "safe::$_"
		3708	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3709
		3710	warn "unloading cf.pm \"a bit\"";
		3711	delete $INC{"cf.pm"};
		3712	delete $INC{"cf/pod.pm"};
		3713
		3714	# don't, removes xs symbols, too,
		3715	# and global variables created in xs
		3716	#clear_package __PACKAGE__;
		3717
		3718	warn "unload completed, starting to reload now";
		3719
		3720	warn "reloading cf.pm";
		3721	require cf;
		3722	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3723
		3724	warn "loading config and database again";
		3725	cf::reload_config;
		3726
		3727	warn "loading extensions";
		3728	cf::load_extensions;
		3729
		3730	warn "reattaching attachments to objects/players";
		3731	_global_reattach; # objects, sockets
		3732	warn "reattaching attachments to maps";
		3733	reattach $_ for values %MAP;
		3734	warn "reattaching attachments to players";
		3735	reattach $_ for values %PLAYER;
		3736
		3737	warn "running post_load";
		3738	(pop @POST_INIT)->(1) while @POST_INIT;
		3739
		3740	warn "leaving sync_job";
		3741
		3742	1
		3743	} or do {
		3744	warn $@;
		3745	cf::cleanup "error while reloading, exiting.";
		3746	};
		3747
		3748	warn "reloaded";
		3749	--$RELOAD;
		3750	}
		3751	};
		3752
		3753	our $RELOAD_WATCHER; # used only during reload
		3754
		3755	sub reload_perl() {
		3756	# doing reload synchronously and two reloads happen back-to-back,
		3757	# coro crashes during coro_state_free->destroy here.
		3758
		3759	$RELOAD_WATCHER ||= EV::timer $TICK * 1.5, 0, sub {
		3760	do_reload_perl;
		3761	undef $RELOAD_WATCHER;
		3762	};
		3763	}
		3764
		3765	register_command "reload" => sub {
		3766	my ($who, $arg) = @_;
		3767
		3768	if ($who->flag (FLAG_WIZ)) {
		3769	$who->message ("reloading server.");
		3770	async {
		3771	$Coro::current->{desc} = "perl_reload";
		3772	reload_perl;
		3773	};
		3774	}
		3775	};
		3776
		3777	unshift @INC, $LIBDIR;
		3778
		3779	my $bug_warning = 0;
		3780
		3781	our @WAIT_FOR_TICK;
		3782	our @WAIT_FOR_TICK_BEGIN;
		3783
		3784	sub wait_for_tick {
		3785	return if tick_inhibit || $Coro::current == $Coro::main;
		3786
		3787	my $signal = new Coro::Signal;
		3788	push @WAIT_FOR_TICK, $signal;
		3789	$signal->wait;
		3790	}
		3791
		3792	sub wait_for_tick_begin {
		3793	return if tick_inhibit || $Coro::current == $Coro::main;
		3794
		3795	my $signal = new Coro::Signal;
		3796	push @WAIT_FOR_TICK_BEGIN, $signal;
		3797	$signal->wait;
		3798	}
		3799
		3800	sub tick {
		3801	if ($Coro::current != $Coro::main) {
		3802	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3803	unless ++$bug_warning > 10;
		3804	return;
		3805	}
		3806
		3807	cf::server_tick; # one server iteration
		3808
		3809	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3810	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3811	Coro::async_pool {
		3812	$Coro::current->{desc} = "runtime saver";
		3813	write_runtime_sync
		3814	or warn "ERROR: unable to write runtime file: $!";
		3815	};
		3816	}
		3817
		3818	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3819	$sig->send;
		3820	}
		3821	while (my $sig = shift @WAIT_FOR_TICK) {
		3822	$sig->send;
		3823	}
		3824
		3825	$LOAD = ($NOW - $TICK_START) / $TICK;
		3826	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3827
		3828	if (0) {
		3829	if ($NEXT_TICK) {
		3830	my $jitter = $TICK_START - $NEXT_TICK;
		3831	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3832	warn "jitter $JITTER\n";#d#
		3833	}
		3834	}
		3835	}
1001		3836
1002	{	3837	{
1003	my $path = cf::localdir . "/database.pst";	3838	# configure BDB
1004		3839
1005	sub db_load() {	3840	BDB::min_parallel 8;
1006	warn "loading database $path\n";#d# remove later	3841	BDB::max_poll_reqs $TICK * 0.1;
1007	$DB = stat $path ? Storable::retrieve $path : { };	3842	$AnyEvent::BDB::WATCHER->priority (1);
1008	}
1009		3843
1010	my $pid;	3844	unless ($DB_ENV) {
		3845	$DB_ENV = BDB::db_env_create;
		3846	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3847	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3848	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3849	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3850	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1011		3851
1012	sub db_save() {	3852	cf::sync_job {
1013	warn "saving database $path\n";#d# remove later
1014	waitpid $pid, 0 if $pid;
1015	if (0 == ($pid = fork)) {
1016	$DB->{_meta}{version} = 1;
1017	Storable::nstore $DB, "$path~";
1018	rename "$path~", $path;
1019	cf::_exit 0 if defined $pid;
1020	}
1021	}
1022
1023	my $dirty;
1024
1025	sub db_sync() {
1026	db_save if $dirty;
1027	undef $dirty;
1028	}
1029
1030	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1031	db_sync;
1032	});
1033
1034	sub db_dirty() {
1035	$dirty = 1;
1036	$idle->start;
1037	}
1038
1039	sub db_get($;$) {
1040	@_ >= 2
1041	? $DB->{$_[0]}{$_[1]}
1042	: ($DB->{$_[0]} ||= { })
1043	}
1044
1045	sub db_put($$;$) {
1046	if (@_ >= 3) {
1047	$DB->{$_[0]}{$_[1]} = $_[2];
1048	} else {	3853	eval {
1049	$DB->{$_[0]} = $_[1];	3854	BDB::db_env_open
1050	}	3855	$DB_ENV,
1051	db_dirty;	3856	$BDBDIR,
1052	}	3857	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3858	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3859	0666;
1053		3860
1054	attach_global	3861	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1055	prio => 10000,
1056	on_cleanup => sub {
1057	db_sync;
1058	},
1059	;
1060	}
1061
1062	#############################################################################
1063	# the server's main()
1064
1065	sub cfg_load {
1066	open my $fh, "<:utf8", cf::confdir . "/config"
1067	or return;
1068
1069	local $/;
1070	*CFG = YAML::Syck::Load <$fh>;
1071	}
1072
1073	sub main {
1074	cfg_load;
1075	db_load;
1076	load_extensions;
1077	Event::loop;
1078	}
1079
1080	#############################################################################
1081	# initialisation
1082
1083	sub _perl_reload(&) {
1084	my ($msg) = @_;
1085
1086	$msg->("reloading...");
1087
1088	eval {
1089	# cancel all watchers
1090	$_->cancel for Event::all_watchers;
1091
1092	# unload all extensions
1093	for (@exts) {
1094	$msg->("unloading <$_>");
1095	unload_extension $_;
1096	}
1097
1098	# unload all modules loaded from $LIBDIR
1099	while (my ($k, $v) = each %INC) {
1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1101
1102	$msg->("removing <$k>");
1103	delete $INC{$k};
1104
1105	$k =~ s/\.pm$//;
1106	$k =~ s/\//::/g;
1107
1108	if (my $cb = $k->can ("unload_module")) {
1109	$cb->();
1110	}	3862	};
1111		3863
1112	Symbol::delete_package $k;	3864	cf::cleanup "db_env_open(db): $@" if $@;
1113	}	3865	};
		3866	}
1114		3867
1115	# sync database to disk	3868	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1116	cf::db_sync;	3869	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1117
1118	# get rid of safe::, as good as possible
1119	Symbol::delete_package "safe::$_"
1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1121
1122	# remove register_script_function callbacks
1123	# TODO
1124
1125	# unload cf.pm "a bit"
1126	delete $INC{"cf.pm"};
1127
1128	# don't, removes xs symbols, too,
1129	# and global variables created in xs
1130	#Symbol::delete_package __PACKAGE__;
1131
1132	# reload cf.pm
1133	$msg->("reloading cf.pm");
1134	require cf;
1135
1136	# load config and database again
1137	cf::cfg_load;
1138	cf::db_load;
1139
1140	# load extensions
1141	$msg->("load extensions");
1142	cf::load_extensions;
1143
1144	# reattach attachments to objects
1145	$msg->("reattach");
1146	_global_reattach;
1147	};	3870	};
1148	$msg->($@) if $@;	3871	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1149		3872	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1150	$msg->("reloaded");
1151	};
1152
1153	sub perl_reload() {
1154	_perl_reload {
1155	warn $_[0];
1156	print "$_[0]\n";
1157	};	3873	};
		3874	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3875	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3876	};
1158	}	3877	}
1159		3878
1160	register_command "perl-reload", 0, sub {	3879	{
		3880	# configure IO::AIO
		3881
		3882	IO::AIO::min_parallel 8;
		3883	IO::AIO::max_poll_time $TICK * 0.1;
		3884	undef $AnyEvent::AIO::WATCHER;
		3885	}
		3886
		3887	my $_log_backtrace;
		3888
		3889	sub _log_backtrace {
1161	my ($who, $arg) = @_;	3890	my ($msg, @addr) = @_;
1162		3891
1163	if ($who->flag (FLAG_WIZ)) {	3892	$msg =~ s/\n//;
1164	_perl_reload {	3893
1165	warn $_[0];	3894	# limit the # of concurrent backtraces
1166	$who->message ($_[0]);	3895	if ($_log_backtrace < 2) {
		3896	++$_log_backtrace;
		3897	my $perl_bt = Carp::longmess $msg;
		3898	async {
		3899	$Coro::current->{desc} = "abt $msg";
		3900
		3901	my @bt = fork_call {
		3902	@addr = map { sprintf "%x", $_ } @addr;
		3903	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3904	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3905	or die "addr2line: $!";
		3906
		3907	my @funcs;
		3908	my @res = <$fh>;
		3909	chomp for @res;
		3910	while (@res) {
		3911	my ($func, $line) = splice @res, 0, 2, ();
		3912	push @funcs, "[$func] $line";
		3913	}
		3914
		3915	@funcs
		3916	};
		3917
		3918	LOG llevInfo, "[ABT] $perl_bt\n";
		3919	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3920	LOG llevInfo, "[ABT] $_\n" for @bt;
		3921	--$_log_backtrace;
1167	};	3922	};
1168	}	3923	} else {
1169	};	3924	LOG llevInfo, "[ABT] $msg\n";
1170		3925	LOG llevInfo, "[ABT] [suppressed]\n";
1171	register "<global>", __PACKAGE__;
1172
1173	unshift @INC, $LIBDIR;
1174
1175	$TICK_WATCHER = Event->timer (
1176	prio => 1,
1177	async => 1,
1178	at => $NEXT_TICK || 1,
1179	cb => sub {
1180	cf::server_tick; # one server iteration
1181
1182	my $NOW = Event::time;
1183	$NEXT_TICK += $TICK;
1184
1185	# if we are delayed by four ticks or more, skip them all
1186	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1187
1188	$TICK_WATCHER->at ($NEXT_TICK);
1189	$TICK_WATCHER->start;
1190	},	3926	}
1191	);	3927	}
1192		3928
1193	IO::AIO::max_poll_time $TICK * 0.2;	3929	# load additional modules
		3930	use cf::pod;
1194		3931
1195	Event->io (fd => IO::AIO::poll_fileno,	3932	END { cf::emergency_save }
1196	poll => 'r',
1197	prio => 5,
1198	cb => \&IO::AIO::poll_cb);
1199		3933
1200	1	3934	1
1201		3935

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