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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.69 by root, Mon Sep 18 01:10:35 2006 UTC vs.
Revision 1.468 by root, Thu Jan 8 19:23:44 2009 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 qw(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 Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Digest::MD5;
		57	use Fcntl;
		58	use YAML ();
		59	use IO::AIO ();
10	use Time::HiRes;	60	use Time::HiRes;
11	use Event;	61	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	62	use Digest::MD5 ();
13		63
14	use strict;	64	AnyEvent::detect;
15		65
16	_init_vars;	66	# configure various modules to our taste
		67	#
		68	$Storable::canonical = 1; # reduce rsync transfers
		69	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
17		70
		71	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		72
		73	# make sure c-lzf reinitialises itself
		74	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		75	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		76
		77	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		78
18	our %COMMAND = ();	79	our %COMMAND = ();
		80	our %COMMAND_TIME = ();
		81
		82	our @EXTS = (); # list of extension package names
		83	our %EXTCMD = ();
		84	our %EXTICMD = ();
		85	our %EXT_CORO = (); # coroutines bound to extensions
		86	our %EXT_MAP = (); # pluggable maps
		87
		88	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	89	our @EVENT;
20	our $LIBDIR = maps_directory "perl";
21		90
22	our $TICK = MAX_TIME * 1e-6;	91	our $CONFDIR = confdir;
23	our $TICK_WATCHER;	92	our $DATADIR = datadir;
		93	our $LIBDIR = "$DATADIR/ext";
		94	our $PODDIR = "$DATADIR/pod";
		95	our $MAPDIR = "$DATADIR/" . mapdir;
		96	our $LOCALDIR = localdir;
		97	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		98	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		99	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		100	our $RANDOMDIR = "$LOCALDIR/random";
		101	our $BDBDIR = "$LOCALDIR/db";
		102	our $PIDFILE = "$LOCALDIR/pid";
		103	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		104
		105	our %RESOURCE;
		106
		107	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		108	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
24	our $NEXT_TICK;	109	our $NEXT_TICK;
		110	our $USE_FSYNC = 1; # use fsync to write maps - default off
		111
		112	our $BDB_DEADLOCK_WATCHER;
		113	our $BDB_CHECKPOINT_WATCHER;
		114	our $BDB_TRICKLE_WATCHER;
		115	our $DB_ENV;
		116
		117	our @EXTRA_MODULES = qw(pod mapscript);
		118
		119	our %CFG;
		120
		121	our $UPTIME; $UPTIME ||= time;
		122	our $RUNTIME;
		123	our $NOW;
		124
		125	our (%PLAYER, %PLAYER_LOADING); # all users
		126	our (%MAP, %MAP_LOADING ); # all maps
		127	our $LINK_MAP; # the special {link} map, which is always available
		128
		129	# used to convert map paths into valid unix filenames by replacing / by ∕
		130	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		131
		132	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		133	our $LOADAVG; # same thing, but with alpha-smoothing
		134	our $JITTER; # average jitter
		135	our $TICK_START; # for load detecting purposes
		136
		137	our @POST_INIT;
		138
		139	our $REATTACH_ON_RELOAD; # ste to true to force object reattach on reload (slow)
		140
		141	binmode STDOUT;
		142	binmode STDERR;
		143
		144	# read virtual server time, if available
		145	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		146	open my $fh, "<", $RUNTIMEFILE
		147	or die "unable to read $RUNTIMEFILE file: $!";
		148	$RUNTIME = <$fh> + 0.;
		149	}
		150
		151	eval "sub TICK() { $TICK } 1" or die;
		152
		153	mkdir $_
		154	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		155
		156	our $EMERGENCY_POSITION;
		157
		158	sub cf::map::normalise;
		159
		160	#############################################################################
		161
		162	=head2 GLOBAL VARIABLES
		163
		164	=over 4
		165
		166	=item $cf::UPTIME
		167
		168	The timestamp of the server start (so not actually an uptime).
		169
		170	=item $cf::RUNTIME
		171
		172	The time this server has run, starts at 0 and is increased by $cf::TICK on
		173	every server tick.
		174
		175	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		176	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		177	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		178
		179	Various directories - "/etc", read-only install directory, perl-library
		180	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		181	unique-items directory, player file directory, random maps directory and
		182	database environment.
		183
		184	=item $cf::NOW
		185
		186	The time of the last (current) server tick.
		187
		188	=item $cf::TICK
		189
		190	The interval between server ticks, in seconds.
		191
		192	=item $cf::LOADAVG
		193
		194	The current CPU load on the server (alpha-smoothed), as a value between 0
		195	(none) and 1 (overloaded), indicating how much time is spent on processing
		196	objects per tick. Healthy values are < 0.5.
		197
		198	=item $cf::LOAD
		199
		200	The raw value load value from the last tick.
		201
		202	=item %cf::CFG
		203
		204	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		205	from wherever your confdir points to.
		206
		207	=item cf::wait_for_tick, cf::wait_for_tick_begin
		208
		209	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		210	returns directly I<after> the tick processing (and consequently, can only wake one process
		211	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		212
		213	=item @cf::INVOKE_RESULTS
		214
		215	This array contains the results of the last C<invoke ()> call. When
		216	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		217	that call.
		218
		219	=back
		220
		221	=cut
25		222
26	BEGIN {	223	BEGIN {
27	*CORE::GLOBAL::warn = sub {	224	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	225	my $msg = join "", @_;
		226
29	$msg .= "\n"	227	$msg .= "\n"
30	unless $msg =~ /\n$/;	228	unless $msg =~ /\n$/;
31		229
32	print STDERR "cfperl: $msg";	230	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		231
33	LOG llevError, "cfperl: $msg";	232	LOG llevError, $msg;
34	};	233	};
35	}	234	}
36		235
		236	$Coro::State::DIEHOOK = sub {
		237	return unless $^S eq 0; # "eq", not "=="
		238
		239	if ($Coro::current == $Coro::main) {#d#
		240	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		241	return;#d#
		242	}#d#
		243
		244	# kill coroutine otherwise
		245	warn Carp::longmess $_[0];
		246	Coro::terminate
		247	};
		248
		249	$SIG{__DIE__} = sub { }; #d#?
		250
		251	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		252	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		253	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		254	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		255	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		256	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
37	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	257	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
38		258
39	# we bless all objects into (empty) derived classes to force a method lookup	259	# we bless all objects into (empty) derived classes to force a method lookup
40	# within the Safe compartment.	260	# within the Safe compartment.
41	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	261	for my $pkg (qw(
42	no strict 'refs';	262	cf::global cf::attachable
		263	cf::object cf::object::player
		264	cf::client cf::player
		265	cf::arch cf::living
		266	cf::map cf::mapspace
		267	cf::party cf::region
		268	)) {
43	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	269	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
44	}	270	}
45		271
46	$Event::DIED = sub {	272	$EV::DIED = sub {
47	warn "error in event callback: @_";	273	warn "error in event callback: @_";
48	};	274	};
49		275
50	my %ext_pkg;
51	my @exts;
52	my @hook;
53	my %command;
54	my %extcmd;
55
56	#############################################################################	276	#############################################################################
57	# utility functions
58		277
59	use JSON::Syck (); # TODO# replace by JSON::PC once working	278	=head2 UTILITY FUNCTIONS
60		279
61	sub from_json($) {	280	=over 4
62	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
63	JSON::Syck::Load $_[0]
64	}
65		281
66	sub to_json($) {	282	=item dumpval $ref
67	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	283
68	JSON::Syck::Dump $_[0]	284	=cut
		285
		286	sub dumpval {
		287	eval {
		288	local $SIG{__DIE__};
		289	my $d;
		290	if (1) {
		291	$d = new Data::Dumper([$_[0]], ["*var"]);
		292	$d->Terse(1);
		293	$d->Indent(2);
		294	$d->Quotekeys(0);
		295	$d->Useqq(1);
		296	#$d->Bless(...);
		297	$d->Seen($_[1]) if @_ > 1;
		298	$d = $d->Dump();
		299	}
		300	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		301	$d
		302	} || "[unable to dump $_[0]: '$@']";
69	}	303	}
		304
		305	=item $ref = cf::decode_json $json
		306
		307	Converts a JSON string into the corresponding perl data structure.
		308
		309	=item $json = cf::encode_json $ref
		310
		311	Converts a perl data structure into its JSON representation.
		312
		313	=cut
		314
		315	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		316
		317	sub encode_json($) { $json_coder->encode ($_[0]) }
		318	sub decode_json($) { $json_coder->decode ($_[0]) }
		319
		320	=item cf::post_init { BLOCK }
		321
		322	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		323	but I<before> the server starts ticking again.
		324
		325	The cdoeblock will have a single boolean argument to indicate whether this
		326	is a reload or not.
		327
		328	=cut
		329
		330	sub post_init(&) {
		331	push @POST_INIT, shift;
		332	}
		333
		334	=item cf::lock_wait $string
		335
		336	Wait until the given lock is available. See cf::lock_acquire.
		337
		338	=item my $lock = cf::lock_acquire $string
		339
		340	Wait until the given lock is available and then acquires it and returns
		341	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		342	for example when the coroutine gets canceled), the lock is automatically
		343	returned.
		344
		345	Locks are *not* recursive, locking from the same coro twice results in a
		346	deadlocked coro.
		347
		348	Lock names should begin with a unique identifier (for example, cf::map::find
		349	uses map_find and cf::map::load uses map_load).
		350
		351	=item $locked = cf::lock_active $string
		352
		353	Return true if the lock is currently active, i.e. somebody has locked it.
		354
		355	=cut
		356
		357	our $LOCKS = new Coro::SemaphoreSet;
		358
		359	sub lock_wait($) {
		360	$LOCKS->wait ($_[0]);
		361	}
		362
		363	sub lock_acquire($) {
		364	$LOCKS->guard ($_[0])
		365	}
		366
		367	sub lock_active($) {
		368	$LOCKS->count ($_[0]) < 1
		369	}
		370
		371	sub freeze_mainloop {
		372	tick_inhibit_inc;
		373
		374	&Guard::guard (\&tick_inhibit_dec);
		375	}
		376
		377	=item cf::periodic $interval, $cb
		378
		379	Like EV::periodic, but randomly selects a starting point so that the actions
		380	get spread over timer.
		381
		382	=cut
		383
		384	sub periodic($$) {
		385	my ($interval, $cb) = @_;
		386
		387	my $start = rand List::Util::min 180, $interval;
		388
		389	EV::periodic $start, $interval, 0, $cb
		390	}
		391
		392	=item cf::get_slot $time[, $priority[, $name]]
		393
		394	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		395	This call blocks and returns only when you have at least C<$time> seconds
		396	of cpu time till the next tick. The slot is only valid till the next cede.
		397
		398	The optional C<$name> can be used to identify the job to run. It might be
		399	used for statistical purposes and should identify the same time-class.
		400
		401	Useful for short background jobs.
		402
		403	=cut
		404
		405	our @SLOT_QUEUE;
		406	our $SLOT_QUEUE;
		407
		408	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		409	$SLOT_QUEUE = Coro::async {
		410	$Coro::current->desc ("timeslot manager");
		411
		412	my $signal = new Coro::Signal;
		413
		414	while () {
		415	next_job:
		416	my $avail = cf::till_tick;
		417	if ($avail > 0.01) {
		418	for (0 .. $#SLOT_QUEUE) {
		419	if ($SLOT_QUEUE[$_][0] < $avail) {
		420	my $job = splice @SLOT_QUEUE, $_, 1, ();
		421	$job->[2]->send;
		422	Coro::cede;
		423	goto next_job;
		424	}
		425	}
		426	}
		427
		428	if (@SLOT_QUEUE) {
		429	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		430	push @cf::WAIT_FOR_TICK, $signal;
		431	$signal->wait;
		432	} else {
		433	Coro::schedule;
		434	}
		435	}
		436	};
		437
		438	sub get_slot($;$$) {
		439	return if tick_inhibit || $Coro::current == $Coro::main;
		440
		441	my ($time, $pri, $name) = @_;
		442
		443	$time = $TICK * .6 if $time > $TICK * .6;
		444	my $sig = new Coro::Signal;
		445
		446	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		447	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		448	$SLOT_QUEUE->ready;
		449	$sig->wait;
		450	}
		451
		452	=item cf::async { BLOCK }
		453
		454	Currently the same as Coro::async_pool, meaning you cannot use
		455	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		456	thing you are allowed to do is call C<prio> on it.
		457
		458	=cut
		459
		460	BEGIN { *async = \&Coro::async_pool }
		461
		462	=item cf::sync_job { BLOCK }
		463
		464	The design of Deliantra requires that the main coroutine ($Coro::main)
		465	is always able to handle events or runnable, as Deliantra is only
		466	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		467	acceptable.
		468
		469	If it must be done, put the blocking parts into C<sync_job>. This will run
		470	the given BLOCK in another coroutine while waiting for the result. The
		471	server will be frozen during this time, so the block should either finish
		472	fast or be very important.
		473
		474	=cut
		475
		476	sub sync_job(&) {
		477	my ($job) = @_;
		478
		479	if ($Coro::current == $Coro::main) {
		480	my $time = EV::time;
		481
		482	# this is the main coro, too bad, we have to block
		483	# till the operation succeeds, freezing the server :/
		484
		485	LOG llevError, Carp::longmess "sync job";#d#
		486
		487	my $freeze_guard = freeze_mainloop;
		488
		489	my $busy = 1;
		490	my @res;
		491
		492	(async {
		493	$Coro::current->desc ("sync job coro");
		494	@res = eval { $job->() };
		495	warn $@ if $@;
		496	undef $busy;
		497	})->prio (Coro::PRIO_MAX);
		498
		499	while ($busy) {
		500	if (Coro::nready) {
		501	Coro::cede_notself;
		502	} else {
		503	EV::loop EV::LOOP_ONESHOT;
		504	}
		505	}
		506
		507	my $time = EV::time - $time;
		508
		509	$TICK_START += $time; # do not account sync jobs to server load
		510
		511	wantarray ? @res : $res[0]
		512	} else {
		513	# we are in another coroutine, how wonderful, everything just works
		514
		515	$job->()
		516	}
		517	}
		518
		519	=item $coro = cf::async_ext { BLOCK }
		520
		521	Like async, but this coro is automatically being canceled when the
		522	extension calling this is being unloaded.
		523
		524	=cut
		525
		526	sub async_ext(&) {
		527	my $cb = shift;
		528
		529	my $coro = &Coro::async ($cb);
		530
		531	$coro->on_destroy (sub {
		532	delete $EXT_CORO{$coro+0};
		533	});
		534	$EXT_CORO{$coro+0} = $coro;
		535
		536	$coro
		537	}
		538
		539	=item fork_call { }, $args
		540
		541	Executes the given code block with the given arguments in a seperate
		542	process, returning the results. Everything must be serialisable with
		543	Coro::Storable. May, of course, block. Note that the executed sub may
		544	never block itself or use any form of event handling.
		545
		546	=cut
		547
		548	sub fork_call(&@) {
		549	my ($cb, @args) = @_;
		550
		551	# we seemingly have to make a local copy of the whole thing,
		552	# otherwise perl prematurely frees the stuff :/
		553	# TODO: investigate and fix (likely this will be rather laborious)
		554
		555	my @res = Coro::Util::fork_eval {
		556	reset_signals;
		557	&$cb
		558	}, @args;
		559
		560	wantarray ? @res : $res[-1]
		561	}
		562
		563	=item $coin = coin_from_name $name
		564
		565	=cut
		566
		567	our %coin_alias = (
		568	"silver" => "silvercoin",
		569	"silvercoin" => "silvercoin",
		570	"silvercoins" => "silvercoin",
		571	"gold" => "goldcoin",
		572	"goldcoin" => "goldcoin",
		573	"goldcoins" => "goldcoin",
		574	"platinum" => "platinacoin",
		575	"platinumcoin" => "platinacoin",
		576	"platinumcoins" => "platinacoin",
		577	"platina" => "platinacoin",
		578	"platinacoin" => "platinacoin",
		579	"platinacoins" => "platinacoin",
		580	"royalty" => "royalty",
		581	"royalties" => "royalty",
		582	);
		583
		584	sub coin_from_name($) {
		585	$coin_alias{$_[0]}
		586	? cf::arch::find $coin_alias{$_[0]}
		587	: undef
		588	}
		589
		590	=item $value = cf::db_get $family => $key
		591
		592	Returns a single value from the environment database.
		593
		594	=item cf::db_put $family => $key => $value
		595
		596	Stores the given C<$value> in the family. It can currently store binary
		597	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		598
		599	=item $db = cf::db_table "name"
		600
		601	Create and/or open a new database table. The string must not be "db" and must be unique
		602	within each server.
		603
		604	=cut
		605
		606	sub db_table($) {
		607	my ($name) = @_;
		608	my $db = BDB::db_create $DB_ENV;
		609
		610	eval {
		611	$db->set_flags (BDB::CHKSUM);
		612
		613	utf8::encode $name;
		614	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		615	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		616	cf::cleanup "db_open(db): $!" if $!;
		617	};
		618	cf::cleanup "db_open(db): $@" if $@;
		619
		620	$db
		621	}
		622
		623	our $DB;
		624
		625	sub db_init {
		626	cf::sync_job {
		627	$DB ||= db_table "db";
		628	};
		629	}
		630
		631	sub db_get($$) {
		632	my $key = "$_[0]/$_[1]";
		633
		634	cf::sync_job {
		635	BDB::db_get $DB, undef, $key, my $data;
		636
		637	$! ? ()
		638	: $data
		639	}
		640	}
		641
		642	sub db_put($$$) {
		643	BDB::dbreq_pri 4;
		644	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		645	}
		646
		647	=item cf::cache $id => [$paths...], $processversion => $process
		648
		649	Generic caching function that returns the value of the resource $id,
		650	caching and regenerating as required.
		651
		652	This function can block.
		653
		654	=cut
		655
		656	sub cache {
		657	my ($id, $src, $processversion, $process) = @_;
		658
		659	my $meta =
		660	join "\x00",
		661	$processversion,
		662	map {
		663	aio_stat $_
		664	and Carp::croak "$_: $!";
		665
		666	($_, (stat _)[7,9])
		667	} @$src;
		668
		669	my $dbmeta = db_get cache => "$id/meta";
		670	if ($dbmeta ne $meta) {
		671	# changed, we may need to process
		672
		673	my @data;
		674	my $md5;
		675
		676	for (0 .. $#$src) {
		677	0 <= aio_load $src->[$_], $data[$_]
		678	or Carp::croak "$src->[$_]: $!";
		679	}
		680
		681	# if processing is expensive, check
		682	# checksum first
		683	if (1) {
		684	$md5 =
		685	join "\x00",
		686	$processversion,
		687	map {
		688	cf::cede_to_tick;
		689	($src->[$_], Digest::MD5::md5_hex $data[$_])
		690	} 0.. $#$src;
		691
		692
		693	my $dbmd5 = db_get cache => "$id/md5";
		694	if ($dbmd5 eq $md5) {
		695	db_put cache => "$id/meta", $meta;
		696
		697	return db_get cache => "$id/data";
		698	}
		699	}
		700
		701	my $t1 = Time::HiRes::time;
		702	my $data = $process->(\@data);
		703	my $t2 = Time::HiRes::time;
		704
		705	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		706
		707	db_put cache => "$id/data", $data;
		708	db_put cache => "$id/md5" , $md5;
		709	db_put cache => "$id/meta", $meta;
		710
		711	return $data;
		712	}
		713
		714	db_get cache => "$id/data"
		715	}
		716
		717	=item cf::datalog type => key => value, ...
		718
		719	Log a datalog packet of the given type with the given key-value pairs.
		720
		721	=cut
		722
		723	sub datalog($@) {
		724	my ($type, %kv) = @_;
		725	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		726	}
		727
		728	=back
		729
		730	=cut
70		731
71	#############################################################################	732	#############################################################################
72	# "new" plug-in system
73		733
74	=head3 EVENTS AND OBJECT ATTACHMENTS	734	=head2 ATTACHABLE OBJECTS
		735
		736	Many objects in deliantra are so-called attachable objects. That means you can
		737	attach callbacks/event handlers (a collection of which is called an "attachment")
		738	to it. All such attachable objects support the following methods.
		739
		740	In the following description, CLASS can be any of C<global>, C<object>
		741	C<player>, C<client> or C<map> (i.e. the attachable objects in
		742	Deliantra).
75		743
76	=over 4	744	=over 4
77		745
78	=item $object->attach ($attachment, key => $value...)
79
80	=item $object->detach ($attachment)
81
82	Attach/detach a pre-registered attachment to an object.
83
84	=item $player->attach ($attachment, key => $value...)
85
86	=item $player->detach ($attachment)
87
88	Attach/detach a pre-registered attachment to a player.
89
90	=item $map->attach ($attachment, key => $value...)	746	=item $attachable->attach ($attachment, key => $value...)
91		747
92	=item $map->detach ($attachment)	748	=item $attachable->detach ($attachment)
93		749
94	Attach/detach a pre-registered attachment to a map.	750	Attach/detach a pre-registered attachment to a specific object and give it
		751	the specified key/value pairs as arguments.
95		752
96	=item $bool = $object->attached ($name)	753	Example, attach a minesweeper attachment to the given object, making it a
		754	10x10 minesweeper game:
97		755
98	=item $bool = $player->attached ($name)	756	$obj->attach (minesweeper => width => 10, height => 10);
99		757
100	=item $bool = $map->attached ($name)	758	=item $bool = $attachable->attached ($name)
101		759
102	Checks wether the named attachment is currently attached to the object.	760	Checks wether the named attachment is currently attached to the object.
103		761
104	=item cf::attach_global ...	762	=item cf::CLASS->attach ...
105		763
106	Attach handlers for global events.	764	=item cf::CLASS->detach ...
107		765
108	This and all following C<attach_*>-functions expect any number of the	766	Define an anonymous attachment and attach it to all objects of the given
109	following handler/hook descriptions:	767	CLASS. See the next function for an explanation of its arguments.
		768
		769	You can attach to global events by using the C<cf::global> class.
		770
		771	Example, log all player logins:
		772
		773	cf::player->attach (
		774	on_login => sub {
		775	my ($pl) = @_;
		776	...
		777	},
		778	);
		779
		780	Example, attach to the jeweler skill:
		781
		782	cf::object->attach (
		783	type => cf::SKILL,
		784	subtype => cf::SK_JEWELER,
		785	on_use_skill => sub {
		786	my ($sk, $ob, $part, $dir, $msg) = @_;
		787	...
		788	},
		789	);
		790
		791	=item cf::CLASS::attachment $name, ...
		792
		793	Register an attachment by C<$name> through which attachable objects of the
		794	given CLASS can refer to this attachment.
		795
		796	Some classes such as deliantra maps and objects can specify attachments
		797	that are attached at load/instantiate time, thus the need for a name.
		798
		799	These calls expect any number of the following handler/hook descriptions:
110		800
111	=over 4	801	=over 4
112		802
113	=item prio => $number	803	=item prio => $number
114		804
…		…
116	by another C<prio> setting). Lower priority handlers get executed	806	by another C<prio> setting). Lower priority handlers get executed
117	earlier. The default priority is C<0>, and many built-in handlers are	807	earlier. The default priority is C<0>, and many built-in handlers are
118	registered at priority C<-1000>, so lower priorities should not be used	808	registered at priority C<-1000>, so lower priorities should not be used
119	unless you know what you are doing.	809	unless you know what you are doing.
120		810
		811	=item type => $type
		812
		813	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		814	given type of objects only (the additional parameter C<subtype> can be
		815	used to further limit to the given subtype).
		816
121	=item on_I<event> => \&cb	817	=item on_I<event> => \&cb
122		818
123	Call the given code reference whenever the named event happens (event is	819	Call the given code reference whenever the named event happens (event is
124	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	820	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
125	handlers are recognised generally depends on the type of object these	821	handlers are recognised generally depends on the type of object these
…		…
134	package and register them. Only handlers for eevents supported by the	830	package and register them. Only handlers for eevents supported by the
135	object/class are recognised.	831	object/class are recognised.
136		832
137	=back	833	=back
138		834
139	=item cf::attach_to_type $object_type, $subtype, ...	835	Example, define an attachment called "sockpuppet" that calls the given
		836	event handler when a monster attacks:
140		837
141	Attach handlers for a specific object type (e.g. TRANSPORT) and	838	cf::object::attachment sockpuppet =>
142	subtype. If C<$subtype> is zero or undef, matches all objects of the given	839	on_skill_attack => sub {
143	type.	840	my ($self, $victim) = @_;
144		841	...
145	=item cf::attach_to_objects ...
146
147	Attach handlers to all objects. Do not use this except for debugging or
148	very rare events, as handlers are (obviously) called for I<all> objects in
149	the game.
150
151	=item cf::attach_to_players ...
152
153	Attach handlers to all players.
154
155	=item cf::attach_to_maps ...
156
157	Attach handlers to all maps.
158
159	=item cf:register_attachment $name, ...
160
161	Register an attachment by name through which objects can refer to this
162	attachment.
163
164	=item cf:register_player_attachment $name, ...
165
166	Register an attachment by name through which players can refer to this
167	attachment.
168
169	=item cf:register_map_attachment $name, ...
170
171	Register an attachment by name through which maps can refer to this
172	attachment.
173
174	=cut
175
176	# the following variables are defined in .xs and must not be re-created
177	our @CB_GLOBAL = (); # registry for all global events
178	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
179	our @CB_PLAYER = ();
180	our @CB_TYPE = (); # registry for type (cf-object class) based events
181	our @CB_MAP = ();
182
183	my %attachment;
184
185	sub _attach_cb($\%$$$) {
186	my ($registry, $undo, $event, $prio, $cb) = @_;
187
188	use sort 'stable';
189
190	$cb = [$prio, $cb];
191
192	@{$registry->[$event]} = sort
193	{ $a->[0] cmp $b->[0] }
194	@{$registry->[$event] || []}, $cb;
195
196	push @{$undo->{cb}}, [$event, $cb];
197	}
198
199	# attach handles attaching event callbacks
200	# the only thing the caller has to do is pass the correct
201	# registry (== where the callback attaches to).
202	sub _attach(\@$@) {
203	my ($registry, $klass, @arg) = @_;
204
205	my $prio = 0;
206
207	my %undo = (
208	registry => $registry,
209	cb => [],
210	);
211
212	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
213
214	while (@arg) {
215	my $type = shift @arg;
216
217	if ($type eq "prio") {
218	$prio = shift @arg;
219
220	} elsif ($type eq "package") {
221	my $pkg = shift @arg;
222
223	while (my ($name, $id) = each %cb_id) {
224	if (my $cb = $pkg->can ($name)) {
225	_attach_cb $registry, %undo, $id, $prio, $cb;
226	}
227	}	842	}
228
229	} elsif (exists $cb_id{$type}) {
230	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
231
232	} elsif (ref $type) {
233	warn "attaching objects not supported, ignoring.\n";
234
235	} else {
236	shift @arg;
237	warn "attach argument '$type' not supported, ignoring.\n";
238	}
239	}
240
241	\%undo
242	}
243
244	sub _attach_attachment {
245	my ($obj, $name, %arg) = @_;
246
247	return if exists $obj->{_attachment}{$name};
248
249	my $res;
250
251	if (my $attach = $attachment{$name}) {
252	my $registry = $obj->registry;
253
254	for (@$attach) {
255	my ($klass, @attach) = @$_;
256	$res = _attach @$registry, $klass, @attach;
257	}
258
259	$obj->{$name} = \%arg;
260	} else {
261	warn "object uses attachment '$name' that is not available, postponing.\n";
262	}
263
264	$obj->{_attachment}{$name} = undef;
265
266	$res->{attachment} = $name;
267	$res
268	}
269
270	*cf::object::attach =
271	*cf::player::attach =
272	*cf::map::attach = sub {
273	my ($obj, $name, %arg) = @_;
274
275	_attach_attachment $obj, $name, %arg;
276	};
277
278	# all those should be optimised
279	*cf::object::detach =
280	*cf::player::detach =
281	*cf::map::detach = sub {
282	my ($obj, $name) = @_;
283
284	delete $obj->{_attachment}{$name};
285	reattach ($obj);
286	};
287
288	*cf::object::attached =
289	*cf::player::attached =
290	*cf::map::attached = sub {
291	my ($obj, $name) = @_;
292
293	exists $obj->{_attachment}{$name}
294	};
295
296	sub attach_global {
297	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
298	}
299
300	sub attach_to_type {
301	my $type = shift;
302	my $subtype = shift;
303
304	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
305	}
306
307	sub attach_to_objects {
308	_attach @CB_OBJECT, KLASS_OBJECT, @_
309	}
310
311	sub attach_to_players {
312	_attach @CB_PLAYER, KLASS_PLAYER, @_
313	}
314
315	sub attach_to_maps {
316	_attach @CB_MAP, KLASS_MAP, @_
317	}
318
319	sub register_attachment {
320	my $name = shift;
321
322	$attachment{$name} = [[KLASS_OBJECT, @_]];
323	}
324
325	sub register_player_attachment {
326	my $name = shift;
327
328	$attachment{$name} = [[KLASS_PLAYER, @_]];
329	}
330
331	sub register_map_attachment {
332	my $name = shift;
333
334	$attachment{$name} = [[KLASS_MAP, @_]];
335	}
336
337	our $override;
338	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
339
340	sub override {
341	$override = 1;
342	@invoke_results = ();
343	}
344
345	sub do_invoke {
346	my $event = shift;
347	my $callbacks = shift;
348
349	@invoke_results = ();
350
351	local $override;
352
353	for (@$callbacks) {
354	eval { &{$_->[1]} };
355
356	if ($@) {
357	warn "$@";
358	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
359	override;
360	}
361
362	return 1 if $override;
363	}
364
365	0	843	}
366	}
367		844
368	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	845	=item $attachable->valid
369
370	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
371
372	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
373
374	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
375
376	Generate a global/object/player/map-specific event with the given arguments.
377
378	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
379	removed in future versions), and there is no public API to access override
380	results (if you must, access C<@cf::invoke_results> directly).
381
382	=back
383
384	=head2 methods valid for all pointers
385
386	=over 4
387
388	=item $object->valid
389
390	=item $player->valid
391
392	=item $map->valid
393		846
394	Just because you have a perl object does not mean that the corresponding	847	Just because you have a perl object does not mean that the corresponding
395	C-level object still exists. If you try to access an object that has no	848	C-level object still exists. If you try to access an object that has no
396	valid C counterpart anymore you get an exception at runtime. This method	849	valid C counterpart anymore you get an exception at runtime. This method
397	can be used to test for existence of the C object part without causing an	850	can be used to test for existence of the C object part without causing an
398	exception.	851	exception.
399		852
		853	=cut
		854
		855	# the following variables are defined in .xs and must not be re-created
		856	our @CB_GLOBAL = (); # registry for all global events
		857	our @CB_ATTACHABLE = (); # registry for all attachables
		858	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		859	our @CB_PLAYER = ();
		860	our @CB_CLIENT = ();
		861	our @CB_TYPE = (); # registry for type (cf-object class) based events
		862	our @CB_MAP = ();
		863
		864	my %attachment;
		865
		866	sub cf::attachable::thawer_merge {
		867	# simply override everything except _meta
		868	local $_[0]{_meta};
		869	%{$_[0]} = %{$_[1]};
		870	}
		871
		872	sub _attach_cb($$$$) {
		873	my ($registry, $event, $prio, $cb) = @_;
		874
		875	use sort 'stable';
		876
		877	$cb = [$prio, $cb];
		878
		879	@{$registry->[$event]} = sort
		880	{ $a->[0] cmp $b->[0] }
		881	@{$registry->[$event] || []}, $cb;
		882	}
		883
		884	# hack
		885	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		886
		887	# attach handles attaching event callbacks
		888	# the only thing the caller has to do is pass the correct
		889	# registry (== where the callback attaches to).
		890	sub _attach {
		891	my ($registry, $klass, @arg) = @_;
		892
		893	my $object_type;
		894	my $prio = 0;
		895	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		896
		897	#TODO: get rid of this hack
		898	if ($attachable_klass{$klass}) {
		899	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		900	}
		901
		902	while (@arg) {
		903	my $type = shift @arg;
		904
		905	if ($type eq "prio") {
		906	$prio = shift @arg;
		907
		908	} elsif ($type eq "type") {
		909	$object_type = shift @arg;
		910	$registry = $CB_TYPE[$object_type] ||= [];
		911
		912	} elsif ($type eq "subtype") {
		913	defined $object_type or Carp::croak "subtype specified without type";
		914	my $object_subtype = shift @arg;
		915	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		916
		917	} elsif ($type eq "package") {
		918	my $pkg = shift @arg;
		919
		920	while (my ($name, $id) = each %cb_id) {
		921	if (my $cb = $pkg->can ($name)) {
		922	_attach_cb $registry, $id, $prio, $cb;
		923	}
		924	}
		925
		926	} elsif (exists $cb_id{$type}) {
		927	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		928
		929	} elsif (ref $type) {
		930	warn "attaching objects not supported, ignoring.\n";
		931
		932	} else {
		933	shift @arg;
		934	warn "attach argument '$type' not supported, ignoring.\n";
		935	}
		936	}
		937	}
		938
		939	sub _object_attach {
		940	my ($obj, $name, %arg) = @_;
		941
		942	return if exists $obj->{_attachment}{$name};
		943
		944	if (my $attach = $attachment{$name}) {
		945	my $registry = $obj->registry;
		946
		947	for (@$attach) {
		948	my ($klass, @attach) = @$_;
		949	_attach $registry, $klass, @attach;
		950	}
		951
		952	$obj->{$name} = \%arg;
		953	} else {
		954	warn "object uses attachment '$name' which is not available, postponing.\n";
		955	}
		956
		957	$obj->{_attachment}{$name} = undef;
		958	}
		959
		960	sub cf::attachable::attach {
		961	if (ref $_[0]) {
		962	_object_attach @_;
		963	} else {
		964	_attach shift->_attach_registry, @_;
		965	}
		966	_recalc_want;
		967	};
		968
		969	# all those should be optimised
		970	sub cf::attachable::detach {
		971	my ($obj, $name) = @_;
		972
		973	if (ref $obj) {
		974	delete $obj->{_attachment}{$name};
		975	reattach ($obj);
		976	} else {
		977	Carp::croak "cannot, currently, detach class attachments";
		978	}
		979	_recalc_want;
		980	};
		981
		982	sub cf::attachable::attached {
		983	my ($obj, $name) = @_;
		984
		985	exists $obj->{_attachment}{$name}
		986	}
		987
		988	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		989	eval "#line " . __LINE__ . " 'cf.pm'
		990	sub cf::\L$klass\E::_attach_registry {
		991	(\\\@CB_$klass, KLASS_$klass)
		992	}
		993
		994	sub cf::\L$klass\E::attachment {
		995	my \$name = shift;
		996
		997	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		998	}
		999	";
		1000	die if $@;
		1001	}
		1002
		1003	our $override;
		1004	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1005
		1006	sub override {
		1007	$override = 1;
		1008	@INVOKE_RESULTS = (@_);
		1009	}
		1010
		1011	sub do_invoke {
		1012	my $event = shift;
		1013	my $callbacks = shift;
		1014
		1015	@INVOKE_RESULTS = ();
		1016
		1017	local $override;
		1018
		1019	for (@$callbacks) {
		1020	eval { &{$_->[1]} };
		1021
		1022	if ($@) {
		1023	warn "$@";
		1024	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1025	override;
		1026	}
		1027
		1028	return 1 if $override;
		1029	}
		1030
		1031	0
		1032	}
		1033
		1034	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1035
		1036	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1037
		1038	Generate an object-specific event with the given arguments.
		1039
		1040	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1041	removed in future versions), and there is no public API to access override
		1042	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1043
400	=back	1044	=back
401		1045
402	=cut	1046	=cut
403
404	*cf::object::valid =
405	*cf::player::valid =
406	*cf::map::valid = \&cf::_valid;
407		1047
408	#############################################################################	1048	#############################################################################
409	# object support	1049	# object support
410		1050
411	sub instantiate {	1051	sub _object_equal($$);
		1052	sub _object_equal($$) {
		1053	my ($a, $b) = @_;
		1054
		1055	return 0 unless (ref $a) eq (ref $b);
		1056
		1057	if ("HASH" eq ref $a) {
		1058	my @ka = keys %$a;
		1059	my @kb = keys %$b;
		1060
		1061	return 0 if @ka != @kb;
		1062
		1063	for (0 .. $#ka) {
		1064	return 0 unless $ka[$_] eq $kb[$_];
		1065	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1066	}
		1067
		1068	} elsif ("ARRAY" eq ref $a) {
		1069
		1070	return 0 if @$a != @$b;
		1071
		1072	for (0 .. $#$a) {
		1073	return 0 unless _object_equal $a->[$_], $b->[$_];
		1074	}
		1075
		1076	} elsif ($a ne $b) {
		1077	return 0;
		1078	}
		1079
		1080	1
		1081	}
		1082
		1083	our $SLOW_MERGES;#d#
		1084	sub _can_merge {
412	my ($obj, $data) = @_;	1085	my ($ob1, $ob2) = @_;
413		1086
414	$data = from_json $data;	1087	++$SLOW_MERGES;#d#
415		1088
416	for (@$data) {	1089	# we do the slow way here
417	my ($name, $args) = @$_;	1090	return _object_equal $ob1, $ob2
418
419	$obj->attach ($name, %{$args || {} });
420	}
421	}	1091	}
422		1092
423	# basically do the same as instantiate, without calling instantiate
424	sub reattach {	1093	sub reattach {
		1094	# basically do the same as instantiate, without calling instantiate
425	my ($obj) = @_;	1095	my ($obj) = @_;
		1096
		1097	# no longer needed after getting rid of delete_package?
		1098	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1099
426	my $registry = $obj->registry;	1100	my $registry = $obj->registry;
427		1101
428	@$registry = ();	1102	@$registry = ();
429		1103
430	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1104	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
431		1105
432	for my $name (keys %{ $obj->{_attachment} || {} }) {	1106	for my $name (keys %{ $obj->{_attachment} || {} }) {
433	if (my $attach = $attachment{$name}) {	1107	if (my $attach = $attachment{$name}) {
434	for (@$attach) {	1108	for (@$attach) {
435	my ($klass, @attach) = @$_;	1109	my ($klass, @attach) = @$_;
436	_attach @$registry, $klass, @attach;	1110	_attach $registry, $klass, @attach;
437	}	1111	}
438	} else {	1112	} else {
439	warn "object uses attachment '$name' that is not available, postponing.\n";	1113	warn "object uses attachment '$name' that is not available, postponing.\n";
440	}	1114	}
441	}	1115	}
442	}	1116	}
443		1117
444	sub object_freezer_save {	1118	cf::attachable->attach (
445	my ($filename, $rdata, $objs) = @_;
446
447	if (length $$rdata) {
448	warn sprintf "saving %s (%d,%d)\n",
449	$filename, length $$rdata, scalar @$objs;
450
451	if (open my $fh, ">:raw", "$filename~") {
452	chmod SAVE_MODE, $fh;
453	syswrite $fh, $$rdata;
454	close $fh;
455
456	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
457	chmod SAVE_MODE, $fh;
458	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
459	close $fh;
460	rename "$filename.pst~", "$filename.pst";
461	} else {
462	unlink "$filename.pst";
463	}
464
465	rename "$filename~", $filename;
466	} else {
467	warn "FATAL: $filename~: $!\n";
468	}
469	} else {
470	unlink $filename;
471	unlink "$filename.pst";
472	}
473	}
474
475	sub object_thawer_load {
476	my ($filename) = @_;
477
478	local $/;
479
480	my $av;
481
482	#TODO: use sysread etc.
483	if (open my $data, "<:raw:perlio", $filename) {
484	$data = <$data>;
485	if (open my $pst, "<:raw:perlio", "$filename.pst") {
486	$av = eval { (Storable::thaw <$pst>)->{objs} };
487	}
488	return ($data, $av);
489	}
490
491	()
492	}
493
494	attach_to_objects
495	prio => -1000000,	1119	prio => -1000000,
		1120	on_instantiate => sub {
		1121	my ($obj, $data) = @_;
		1122
		1123	$data = decode_json $data;
		1124
		1125	for (@$data) {
		1126	my ($name, $args) = @$_;
		1127
		1128	$obj->attach ($name, %{$args || {} });
		1129	}
		1130	},
		1131	on_reattach => \&reattach,
496	on_clone => sub {	1132	on_clone => sub {
497	my ($src, $dst) = @_;	1133	my ($src, $dst) = @_;
498		1134
499	@{$dst->registry} = @{$src->registry};	1135	@{$dst->registry} = @{$src->registry};
500		1136
501	%$dst = %$src;	1137	%$dst = %$src;
502		1138
503	%{$dst->{_attachment}} = %{$src->{_attachment}}	1139	%{$dst->{_attachment}} = %{$src->{_attachment}}
504	if exists $src->{_attachment};	1140	if exists $src->{_attachment};
505	},	1141	},
506	;	1142	);
		1143
		1144	sub object_freezer_save {
		1145	my ($filename, $rdata, $objs) = @_;
		1146
		1147	sync_job {
		1148	if (length $$rdata) {
		1149	utf8::decode (my $decname = $filename);
		1150	warn sprintf "saving %s (%d,%d)\n",
		1151	$decname, length $$rdata, scalar @$objs;
		1152
		1153	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1154	aio_chmod $fh, SAVE_MODE;
		1155	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1156	aio_fsync $fh if $cf::USE_FSYNC;
		1157	aio_close $fh;
		1158
		1159	if (@$objs) {
		1160	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1161	aio_chmod $fh, SAVE_MODE;
		1162	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1163	aio_write $fh, 0, (length $data), $data, 0;
		1164	aio_fsync $fh if $cf::USE_FSYNC;
		1165	aio_close $fh;
		1166	aio_rename "$filename.pst~", "$filename.pst";
		1167	}
		1168	} else {
		1169	aio_unlink "$filename.pst";
		1170	}
		1171
		1172	aio_rename "$filename~", $filename;
		1173
		1174	$filename =~ s%/[^/]+$%%;
		1175	aio_pathsync $filename if $cf::USE_FSYNC;
		1176	} else {
		1177	warn "unable to save objects: $filename~: $!\n";
		1178	}
		1179	} else {
		1180	aio_unlink $filename;
		1181	aio_unlink "$filename.pst";
		1182	}
		1183	};
		1184	}
		1185
		1186	sub object_freezer_as_string {
		1187	my ($rdata, $objs) = @_;
		1188
		1189	use Data::Dumper;
		1190
		1191	$$rdata . Dumper $objs
		1192	}
		1193
		1194	sub object_thawer_load {
		1195	my ($filename) = @_;
		1196
		1197	my ($data, $av);
		1198
		1199	(aio_load $filename, $data) >= 0
		1200	or return;
		1201
		1202	unless (aio_stat "$filename.pst") {
		1203	(aio_load "$filename.pst", $av) >= 0
		1204	or return;
		1205
		1206	my $st = eval { Coro::Storable::thaw $av };
		1207	$av = $st->{objs};
		1208	}
		1209
		1210	utf8::decode (my $decname = $filename);
		1211	warn sprintf "loading %s (%d,%d)\n",
		1212	$decname, length $data, scalar @{$av || []};
		1213
		1214	($data, $av)
		1215	}
		1216
		1217	=head2 COMMAND CALLBACKS
		1218
		1219	=over 4
		1220
		1221	=cut
507		1222
508	#############################################################################	1223	#############################################################################
509	# old plug-in events	1224	# command handling &c
510		1225
511	sub inject_event {	1226	=item cf::register_command $name => \&callback($ob,$args);
512	my $extension = shift;
513	my $event_code = shift;
514		1227
515	my $cb = $hook[$event_code]{$extension}	1228	Register a callback for execution when the client sends the user command
516	or return;	1229	$name.
517		1230
518	&$cb	1231	=cut
519	}
520
521	sub inject_global_event {
522	my $event = shift;
523
524	my $cb = $hook[$event]
525	or return;
526
527	List::Util::max map &$_, values %$cb
528	}
529
530	sub inject_command {
531	my ($name, $obj, $params) = @_;
532
533	for my $cmd (@{ $command{$name} }) {
534	$cmd->[1]->($obj, $params);
535	}
536
537	-1
538	}
539		1232
540	sub register_command {	1233	sub register_command {
541	my ($name, $time, $cb) = @_;	1234	my ($name, $cb) = @_;
542		1235
543	my $caller = caller;	1236	my $caller = caller;
544	#warn "registering command '$name/$time' to '$caller'";	1237	#warn "registering command '$name/$time' to '$caller'";
545		1238
546	push @{ $command{$name} }, [$time, $cb, $caller];	1239	push @{ $COMMAND{$name} }, [$caller, $cb];
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
548	}	1240	}
		1241
		1242	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1243
		1244	Register a callback for execution when the client sends an (synchronous)
		1245	extcmd packet. Ext commands will be processed in the order they are
		1246	received by the server, like other user commands. The first argument is
		1247	the logged-in player. Ext commands can only be processed after a player
		1248	has logged in successfully.
		1249
		1250	If the callback returns something, it is sent back as if reply was being
		1251	called.
		1252
		1253	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1254
		1255	Register a callback for execution when the client sends an (asynchronous)
		1256	exticmd packet. Exti commands are processed by the server as soon as they
		1257	are received, i.e. out of order w.r.t. other commands. The first argument
		1258	is a client socket. Exti commands can be received anytime, even before
		1259	log-in.
		1260
		1261	If the callback returns something, it is sent back as if reply was being
		1262	called.
		1263
		1264	=cut
549		1265
550	sub register_extcmd {	1266	sub register_extcmd {
551	my ($name, $cb) = @_;	1267	my ($name, $cb) = @_;
552		1268
553	my $caller = caller;	1269	$EXTCMD{$name} = $cb;
554	#warn "registering extcmd '$name' to '$caller'";
555
556	$extcmd{$name} = [$cb, $caller];
557	}	1270	}
558		1271
559	sub register {	1272	sub register_exticmd {
560	my ($base, $pkg) = @_;	1273	my ($name, $cb) = @_;
561		1274
562	#TODO	1275	$EXTICMD{$name} = $cb;
563	}	1276	}
564		1277
565	sub load_extension {	1278	use File::Glob ();
566	my ($path) = @_;
567		1279
568	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1280	cf::player->attach (
569	my $base = $1;	1281	on_command => sub {
570	my $pkg = $1;	1282	my ($pl, $name, $params) = @_;
571	$pkg =~ s/[^[:word:]]/_/g;
572	$pkg = "ext::$pkg";
573		1283
574	warn "loading '$path' into '$pkg'\n";	1284	my $cb = $COMMAND{$name}
		1285	or return;
575		1286
576	open my $fh, "<:utf8", $path	1287	for my $cmd (@$cb) {
577	or die "$path: $!";	1288	$cmd->[1]->($pl->ob, $params);
578
579	my $source =
580	"package $pkg; use strict; use utf8;\n"
581	. "#line 1 \"$path\"\n{\n"
582	. (do { local $/; <$fh> })
583	. "\n};\n1";
584
585	eval $source
586	or die "$path: $@";
587
588	push @exts, $pkg;
589	$ext_pkg{$base} = $pkg;
590
591	# no strict 'refs';
592	# @{"$pkg\::ISA"} = ext::;
593
594	register $base, $pkg;
595	}
596
597	sub unload_extension {
598	my ($pkg) = @_;
599
600	warn "removing extension $pkg\n";
601
602	# remove hooks
603	#TODO
604	# for my $idx (0 .. $#PLUGIN_EVENT) {
605	# delete $hook[$idx]{$pkg};
606	# }
607
608	# remove commands
609	for my $name (keys %command) {
610	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
611
612	if (@cb) {
613	$command{$name} = \@cb;
614	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
615	} else {
616	delete $command{$name};
617	delete $COMMAND{"$name\000"};
618	}	1289	}
		1290
		1291	cf::override;
619	}	1292	},
620
621	# remove extcmds
622	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
623	delete $extcmd{$name};
624	}
625
626	if (my $cb = $pkg->can ("unload")) {
627	eval {
628	$cb->($pkg);
629	1
630	} or warn "$pkg unloaded, but with errors: $@";
631	}
632
633	Symbol::delete_package $pkg;
634	}
635
636	sub load_extensions {
637	my $LIBDIR = maps_directory "perl";
638
639	for my $ext (<$LIBDIR/*.ext>) {
640	next unless -r $ext;
641	eval {
642	load_extension $ext;
643	1
644	} or warn "$ext not loaded: $@";
645	}
646	}
647
648	#############################################################################
649	# extcmd framework, basically convert ext <msg>
650	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
651
652	attach_to_players
653	on_extcmd => sub {	1293	on_extcmd => sub {
654	my ($pl, $buf) = @_;	1294	my ($pl, $buf) = @_;
655		1295
656	my $msg = eval { from_json $buf };	1296	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
657		1297
658	if (ref $msg) {	1298	if (ref $msg) {
		1299	my ($type, $reply, @payload) =
		1300	"ARRAY" eq ref $msg
		1301	? @$msg
		1302	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1303
		1304	my @reply;
		1305
659	if (my $cb = $extcmd{$msg->{msgtype}}) {	1306	if (my $cb = $EXTCMD{$type}) {
660	if (my %reply = $cb->[0]->($pl, $msg)) {	1307	@reply = $cb->($pl, @payload);
661	$pl->ext_reply ($msg->{msgid}, %reply);	1308	}
		1309
		1310	$pl->ext_reply ($reply, @reply)
		1311	if $reply;
		1312
		1313	} else {
		1314	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1315	}
		1316
		1317	cf::override;
		1318	},
		1319	);
		1320
		1321	# "readahead" all extensions
		1322	sub cache_extensions {
		1323	my $grp = IO::AIO::aio_group;
		1324
		1325	add $grp IO::AIO::aio_readdir $LIBDIR, sub {
		1326	for (grep /\.ext$/, @{$_[0]}) {
		1327	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1328	}
		1329	};
		1330
		1331	$grp
		1332	}
		1333
		1334	sub load_extensions {
		1335	cf::sync_job {
		1336	my %todo;
		1337
		1338	for my $path (<$LIBDIR/*.ext>) {
		1339	next unless -r $path;
		1340
		1341	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1342	my $base = $1;
		1343	my $pkg = $1;
		1344	$pkg =~ s/[^[:word:]]/_/g;
		1345	$pkg = "ext::$pkg";
		1346
		1347	open my $fh, "<:utf8", $path
		1348	or die "$path: $!";
		1349
		1350	my $source = do { local $/; <$fh> };
		1351
		1352	my %ext = (
		1353	path => $path,
		1354	base => $base,
		1355	pkg => $pkg,
		1356	);
		1357
		1358	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1359	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1360
		1361	$ext{source} =
		1362	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1363	. "#line 1 \"$path\"\n{\n"
		1364	. $source
		1365	. "\n};\n1";
		1366
		1367	$todo{$base} = \%ext;
		1368	}
		1369
		1370	my %done;
		1371	while (%todo) {
		1372	my $progress;
		1373
		1374	while (my ($k, $v) = each %todo) {
		1375	for (split /,\s*/, $v->{meta}{depends}) {
		1376	goto skip
		1377	unless exists $done{$_};
		1378	}
		1379
		1380	warn "... loading '$k' into '$v->{pkg}'\n";
		1381
		1382	unless (eval $v->{source}) {
		1383	my $msg = $@ ? "$v->{path}: $@\n"
		1384	: "$v->{base}: extension inactive.\n";
		1385
		1386	if (exists $v->{meta}{mandatory}) {
		1387	warn $msg;
		1388	cf::cleanup "mandatory extension failed to load, exiting.";
		1389	}
		1390
		1391	warn $msg;
		1392	}
		1393
		1394	$done{$k} = delete $todo{$k};
		1395	push @EXTS, $v->{pkg};
		1396	$progress = 1;
		1397	}
		1398
		1399	skip:
		1400	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1401	unless $progress;
		1402	}
		1403	};
		1404	}
		1405
		1406	#############################################################################
		1407
		1408	=back
		1409
		1410	=head2 CORE EXTENSIONS
		1411
		1412	Functions and methods that extend core deliantra objects.
		1413
		1414	=cut
		1415
		1416	package cf::player;
		1417
		1418	use Coro::AIO;
		1419
		1420	=head3 cf::player
		1421
		1422	=over 4
		1423
		1424	=item cf::player::num_playing
		1425
		1426	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1427
		1428	=cut
		1429
		1430	sub num_playing {
		1431	scalar grep
		1432	$_->ob->map
		1433	&& !$_->hidden
		1434	&& !$_->ob->flag (cf::FLAG_WIZ),
		1435	cf::player::list
		1436	}
		1437
		1438	=item cf::player::find $login
		1439
		1440	Returns the given player object, loading it if necessary (might block).
		1441
		1442	=cut
		1443
		1444	sub playerdir($) {
		1445	"$PLAYERDIR/"
		1446	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1447	}
		1448
		1449	sub path($) {
		1450	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1451
		1452	(playerdir $login) . "/playerdata"
		1453	}
		1454
		1455	sub find_active($) {
		1456	$cf::PLAYER{$_[0]}
		1457	and $cf::PLAYER{$_[0]}->active
		1458	and $cf::PLAYER{$_[0]}
		1459	}
		1460
		1461	sub exists($) {
		1462	my ($login) = @_;
		1463
		1464	$cf::PLAYER{$login}
		1465	or !aio_stat path $login
		1466	}
		1467
		1468	sub find($) {
		1469	return $cf::PLAYER{$_[0]} || do {
		1470	my $login = $_[0];
		1471
		1472	my $guard = cf::lock_acquire "user_find:$login";
		1473
		1474	$cf::PLAYER{$_[0]} || do {
		1475	# rename old playerfiles to new ones
		1476	#TODO: remove when no longer required
		1477	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1478	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1479	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1480	aio_unlink +(playerdir $login) . "/$login.pl";
		1481
		1482	my $f = new_from_file cf::object::thawer path $login
		1483	or return;
		1484
		1485	my $pl = cf::player::load_pl $f
		1486	or return;
		1487
		1488	local $cf::PLAYER_LOADING{$login} = $pl;
		1489	$f->resolve_delayed_derefs;
		1490	$cf::PLAYER{$login} = $pl
		1491	}
		1492	}
		1493	}
		1494
		1495	sub save($) {
		1496	my ($pl) = @_;
		1497
		1498	return if $pl->{deny_save};
		1499
		1500	my $path = path $pl;
		1501	my $guard = cf::lock_acquire "user_save:$path";
		1502
		1503	return if $pl->{deny_save};
		1504
		1505	aio_mkdir playerdir $pl, 0770;
		1506	$pl->{last_save} = $cf::RUNTIME;
		1507
		1508	cf::get_slot 0.01;
		1509
		1510	$pl->save_pl ($path);
		1511	cf::cede_to_tick;
		1512	}
		1513
		1514	sub new($) {
		1515	my ($login) = @_;
		1516
		1517	my $self = create;
		1518
		1519	$self->ob->name ($login);
		1520	$self->{deny_save} = 1;
		1521
		1522	$cf::PLAYER{$login} = $self;
		1523
		1524	$self
		1525	}
		1526
		1527	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1528
		1529	=cut
		1530
		1531	sub send_msg {
		1532	my $ns = shift->ns
		1533	or return;
		1534	$ns->send_msg (@_);
		1535	}
		1536
		1537	=item $pl->quit_character
		1538
		1539	Nukes the player without looking back. If logged in, the connection will
		1540	be destroyed. May block for a long time.
		1541
		1542	=cut
		1543
		1544	sub quit_character {
		1545	my ($pl) = @_;
		1546
		1547	my $name = $pl->ob->name;
		1548
		1549	$pl->{deny_save} = 1;
		1550	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1551
		1552	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1553	$pl->deactivate;
		1554	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1555	$pl->ob->check_score;
		1556	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1557	$pl->ns->destroy if $pl->ns;
		1558
		1559	my $path = playerdir $pl;
		1560	my $temp = "$path~$cf::RUNTIME~deleting~";
		1561	aio_rename $path, $temp;
		1562	delete $cf::PLAYER{$pl->ob->name};
		1563	$pl->destroy;
		1564
		1565	my $prefix = qr<^~\Q$name\E/>;
		1566
		1567	# nuke player maps
		1568	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1569
		1570	IO::AIO::aio_rmtree $temp;
		1571	}
		1572
		1573	=item $pl->kick
		1574
		1575	Kicks a player out of the game. This destroys the connection.
		1576
		1577	=cut
		1578
		1579	sub kick {
		1580	my ($pl, $kicker) = @_;
		1581
		1582	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1583	$pl->killer ("kicked");
		1584	$pl->ns->destroy;
		1585	}
		1586
		1587	=item cf::player::list_logins
		1588
		1589	Returns am arrayref of all valid playernames in the system, can take a
		1590	while and may block, so not sync_job-capable, ever.
		1591
		1592	=cut
		1593
		1594	sub list_logins {
		1595	my $dirs = aio_readdir $PLAYERDIR
		1596	or return [];
		1597
		1598	my @logins;
		1599
		1600	for my $login (@$dirs) {
		1601	my $path = path $login;
		1602
		1603	# a .pst is a dead give-away for a valid player
		1604	# if no pst file found, open and chekc for blocked users
		1605	if (aio_stat "$path.pst") {
		1606	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1607	aio_read $fh, 0, 512, my $buf, 0 or next;
		1608	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1609	}
		1610
		1611	utf8::decode $login;
		1612	push @logins, $login;
		1613	}
		1614
		1615	\@logins
		1616	}
		1617
		1618	=item $player->maps
		1619
		1620	Returns an arrayref of map paths that are private for this
		1621	player. May block.
		1622
		1623	=cut
		1624
		1625	sub maps($) {
		1626	my ($pl) = @_;
		1627
		1628	$pl = ref $pl ? $pl->ob->name : $pl;
		1629
		1630	my $files = aio_readdir playerdir $pl
		1631	or return;
		1632
		1633	my @paths;
		1634
		1635	for (@$files) {
		1636	utf8::decode $_;
		1637	next if /\.(?:pl|pst)$/;
		1638	next unless /^$PATH_SEP/o;
		1639
		1640	push @paths, cf::map::normalise "~$pl/$_";
		1641	}
		1642
		1643	\@paths
		1644	}
		1645
		1646	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1647
		1648	Expand deliantra pod fragments into protocol xml.
		1649
		1650	=item $player->ext_reply ($msgid, @msg)
		1651
		1652	Sends an ext reply to the player.
		1653
		1654	=cut
		1655
		1656	sub ext_reply($$@) {
		1657	my ($self, $id, @msg) = @_;
		1658
		1659	$self->ns->ext_reply ($id, @msg)
		1660	}
		1661
		1662	=item $player->ext_msg ($type, @msg)
		1663
		1664	Sends an ext event to the client.
		1665
		1666	=cut
		1667
		1668	sub ext_msg($$@) {
		1669	my ($self, $type, @msg) = @_;
		1670
		1671	$self->ns->ext_msg ($type, @msg);
		1672	}
		1673
		1674	=head3 cf::region
		1675
		1676	=over 4
		1677
		1678	=cut
		1679
		1680	package cf::region;
		1681
		1682	=item cf::region::find_by_path $path
		1683
		1684	Tries to decuce the likely region for a map knowing only its path.
		1685
		1686	=cut
		1687
		1688	sub find_by_path($) {
		1689	my ($path) = @_;
		1690
		1691	my ($match, $specificity);
		1692
		1693	for my $region (list) {
		1694	if ($region->{match} && $path =~ $region->{match}) {
		1695	($match, $specificity) = ($region, $region->specificity)
		1696	if $region->specificity > $specificity;
		1697	}
		1698	}
		1699
		1700	$match
		1701	}
		1702
		1703	=back
		1704
		1705	=head3 cf::map
		1706
		1707	=over 4
		1708
		1709	=cut
		1710
		1711	package cf::map;
		1712
		1713	use Fcntl;
		1714	use Coro::AIO;
		1715
		1716	use overload
		1717	'""' => \&as_string,
		1718	fallback => 1;
		1719
		1720	our $MAX_RESET = 3600;
		1721	our $DEFAULT_RESET = 3000;
		1722
		1723	sub generate_random_map {
		1724	my ($self, $rmp) = @_;
		1725
		1726	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1727
		1728	# mit "rum" bekleckern, nicht
		1729	$self->_create_random_map (
		1730	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1731	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1732	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1733	$rmp->{exit_on_final_map},
		1734	$rmp->{xsize}, $rmp->{ysize},
		1735	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1736	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1737	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1738	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1739	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1740	(cf::region::find $rmp->{region}), $rmp->{custom}
		1741	)
		1742	}
		1743
		1744	=item cf::map->register ($regex, $prio)
		1745
		1746	Register a handler for the map path matching the given regex at the
		1747	givne priority (higher is better, built-in handlers have priority 0, the
		1748	default).
		1749
		1750	=cut
		1751
		1752	sub register {
		1753	my (undef, $regex, $prio) = @_;
		1754	my $pkg = caller;
		1755
		1756	no strict;
		1757	push @{"$pkg\::ISA"}, __PACKAGE__;
		1758
		1759	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1760	}
		1761
		1762	# also paths starting with '/'
		1763	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1764
		1765	sub thawer_merge {
		1766	my ($self, $merge) = @_;
		1767
		1768	# we have to keep some variables in memory intact
		1769	local $self->{path};
		1770	local $self->{load_path};
		1771
		1772	$self->SUPER::thawer_merge ($merge);
		1773	}
		1774
		1775	sub normalise {
		1776	my ($path, $base) = @_;
		1777
		1778	$path = "$path"; # make sure its a string
		1779
		1780	$path =~ s/\.map$//;
		1781
		1782	# map plan:
		1783	#
		1784	# /! non-realised random map exit (special hack!)
		1785	# {... are special paths that are not being touched
		1786	# ?xxx/... are special absolute paths
		1787	# ?random/... random maps
		1788	# /... normal maps
		1789	# ~user/... per-player map of a specific user
		1790
		1791	$path =~ s/$PATH_SEP/\//go;
		1792
		1793	# treat it as relative path if it starts with
		1794	# something that looks reasonable
		1795	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1796	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1797
		1798	$base =~ s{[^/]+/?$}{};
		1799	$path = "$base/$path";
		1800	}
		1801
		1802	for ($path) {
		1803	redo if s{//}{/};
		1804	redo if s{/\.?/}{/};
		1805	redo if s{/[^/]+/\.\./}{/};
		1806	}
		1807
		1808	$path
		1809	}
		1810
		1811	sub new_from_path {
		1812	my (undef, $path, $base) = @_;
		1813
		1814	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1815
		1816	$path = normalise $path, $base;
		1817
		1818	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1819	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1820	my $self = bless cf::map::new, $pkg;
		1821	$self->{path} = $path; $self->path ($path);
		1822	$self->init; # pass $1 etc.
		1823	return $self;
		1824	}
		1825	}
		1826
		1827	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1828	()
		1829	}
		1830
		1831	sub init {
		1832	my ($self) = @_;
		1833
		1834	$self
		1835	}
		1836
		1837	sub as_string {
		1838	my ($self) = @_;
		1839
		1840	"$self->{path}"
		1841	}
		1842
		1843	# the displayed name, this is a one way mapping
		1844	sub visible_name {
		1845	&as_string
		1846	}
		1847
		1848	# the original (read-only) location
		1849	sub load_path {
		1850	my ($self) = @_;
		1851
		1852	"$MAPDIR/$self->{path}.map"
		1853	}
		1854
		1855	# the temporary/swap location
		1856	sub save_path {
		1857	my ($self) = @_;
		1858
		1859	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1860	"$TMPDIR/$path.map"
		1861	}
		1862
		1863	# the unique path, undef == no special unique path
		1864	sub uniq_path {
		1865	my ($self) = @_;
		1866
		1867	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1868	"$UNIQUEDIR/$path"
		1869	}
		1870
		1871	sub decay_objects {
		1872	my ($self) = @_;
		1873
		1874	return if $self->{deny_reset};
		1875
		1876	$self->do_decay_objects;
		1877	}
		1878
		1879	sub unlink_save {
		1880	my ($self) = @_;
		1881
		1882	utf8::encode (my $save = $self->save_path);
		1883	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1884	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1885	}
		1886
		1887	sub load_header_from($) {
		1888	my ($self, $path) = @_;
		1889
		1890	utf8::encode $path;
		1891	my $f = new_from_file cf::object::thawer $path
		1892	or return;
		1893
		1894	$self->_load_header ($f)
		1895	or return;
		1896
		1897	local $MAP_LOADING{$self->{path}} = $self;
		1898	$f->resolve_delayed_derefs;
		1899
		1900	$self->{load_path} = $path;
		1901
		1902	1
		1903	}
		1904
		1905	sub load_header_orig {
		1906	my ($self) = @_;
		1907
		1908	$self->load_header_from ($self->load_path)
		1909	}
		1910
		1911	sub load_header_temp {
		1912	my ($self) = @_;
		1913
		1914	$self->load_header_from ($self->save_path)
		1915	}
		1916
		1917	sub prepare_temp {
		1918	my ($self) = @_;
		1919
		1920	$self->last_access ((delete $self->{last_access})
		1921	|| $cf::RUNTIME); #d#
		1922	# safety
		1923	$self->{instantiate_time} = $cf::RUNTIME
		1924	if $self->{instantiate_time} > $cf::RUNTIME;
		1925	}
		1926
		1927	sub prepare_orig {
		1928	my ($self) = @_;
		1929
		1930	$self->{load_original} = 1;
		1931	$self->{instantiate_time} = $cf::RUNTIME;
		1932	$self->last_access ($cf::RUNTIME);
		1933	$self->instantiate;
		1934	}
		1935
		1936	sub load_header {
		1937	my ($self) = @_;
		1938
		1939	if ($self->load_header_temp) {
		1940	$self->prepare_temp;
		1941	} else {
		1942	$self->load_header_orig
		1943	or return;
		1944	$self->prepare_orig;
		1945	}
		1946
		1947	$self->{deny_reset} = 1
		1948	if $self->no_reset;
		1949
		1950	$self->default_region (cf::region::find_by_path $self->{path})
		1951	unless $self->default_region;
		1952
		1953	1
		1954	}
		1955
		1956	sub find;
		1957	sub find {
		1958	my ($path, $origin) = @_;
		1959
		1960	$path = normalise $path, $origin && $origin->path;
		1961
		1962	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		1963	my $guard2 = cf::lock_acquire "map_find:$path";
		1964
		1965	$cf::MAP{$path} || do {
		1966	my $map = new_from_path cf::map $path
		1967	or return;
		1968
		1969	$map->{last_save} = $cf::RUNTIME;
		1970
		1971	$map->load_header
		1972	or return;
		1973
		1974	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1975	# doing this can freeze the server in a sync job, obviously
		1976	#$cf::WAIT_FOR_TICK->wait;
		1977	undef $guard2;
		1978	undef $guard1;
		1979	$map->reset;
		1980	return find $path;
		1981	}
		1982
		1983	$cf::MAP{$path} = $map
		1984	}
		1985	}
		1986
		1987	sub pre_load { }
		1988	sub post_load { }
		1989
		1990	sub load {
		1991	my ($self) = @_;
		1992
		1993	local $self->{deny_reset} = 1; # loading can take a long time
		1994
		1995	my $path = $self->{path};
		1996
		1997	{
		1998	my $guard = cf::lock_acquire "map_data:$path";
		1999
		2000	return unless $self->valid;
		2001	return unless $self->in_memory == cf::MAP_SWAPPED;
		2002
		2003	$self->in_memory (cf::MAP_LOADING);
		2004
		2005	$self->alloc;
		2006
		2007	$self->pre_load;
		2008	cf::cede_to_tick;
		2009
		2010	my $f = new_from_file cf::object::thawer $self->{load_path};
		2011	$f->skip_block;
		2012	$self->_load_objects ($f)
		2013	or return;
		2014
		2015	$self->post_load_original
		2016	if delete $self->{load_original};
		2017
		2018	if (my $uniq = $self->uniq_path) {
		2019	utf8::encode $uniq;
		2020	unless (aio_stat $uniq) {
		2021	if (my $f = new_from_file cf::object::thawer $uniq) {
		2022	$self->clear_unique_items;
		2023	$self->_load_objects ($f);
		2024	$f->resolve_delayed_derefs;
662	}	2025	}
663	}	2026	}
664	} else {
665	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
666	}	2027	}
667		2028
668	cf::override;	2029	$f->resolve_delayed_derefs;
		2030
		2031	cf::cede_to_tick;
		2032	# now do the right thing for maps
		2033	$self->link_multipart_objects;
		2034	$self->difficulty ($self->estimate_difficulty)
		2035	unless $self->difficulty;
		2036	cf::cede_to_tick;
		2037
		2038	unless ($self->{deny_activate}) {
		2039	$self->decay_objects;
		2040	$self->fix_auto_apply;
		2041	$self->update_buttons;
		2042	cf::cede_to_tick;
		2043	$self->activate;
		2044	}
		2045
		2046	$self->{last_save} = $cf::RUNTIME;
		2047	$self->last_access ($cf::RUNTIME);
		2048
		2049	$self->in_memory (cf::MAP_ACTIVE);
669	},	2050	}
670	;
671		2051
672	#############################################################################	2052	$self->post_load;
673	# load/save/clean perl data associated with a map	2053	}
674		2054
675	*cf::mapsupport::on_clean = sub {	2055	sub customise_for {
		2056	my ($self, $ob) = @_;
		2057
		2058	return find "~" . $ob->name . "/" . $self->{path}
		2059	if $self->per_player;
		2060
		2061	# return find "?party/" . $ob->name . "/" . $self->{path}
		2062	# if $self->per_party;
		2063
		2064	$self
		2065	}
		2066
		2067	# find and load all maps in the 3x3 area around a map
		2068	sub load_neighbours {
676	my ($map) = @_;	2069	my ($map) = @_;
677		2070
678	my $path = $map->tmpname;	2071	my @neigh; # diagonal neighbours
679	defined $path or return;
680		2072
681	unlink "$path.pst";	2073	for (0 .. 3) {
682	};	2074	my $neigh = $map->tile_path ($_)
		2075	or next;
		2076	$neigh = find $neigh, $map
		2077	or next;
		2078	$neigh->load;
683		2079
684	attach_to_maps prio => -10000, package => cf::mapsupport::;	2080	push @neigh,
		2081	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2082	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2083	}
685		2084
686	#############################################################################	2085	for (grep defined $_->[0], @neigh) {
687	# load/save perl data associated with player->ob objects	2086	my ($path, $origin) = @$_;
688		2087	my $neigh = find $path, $origin
689	sub all_objects(@) {	2088	or next;
690	@_, map all_objects ($_->inv), @_	2089	$neigh->load;
		2090	}
691	}	2091	}
692		2092
693	# TODO: compatibility cruft, remove when no longer needed	2093	sub find_sync {
694	attach_to_players	2094	my ($path, $origin) = @_;
695	on_load => sub {
696	my ($pl, $path) = @_;
697		2095
698	for my $o (all_objects $pl->ob) {	2096	cf::sync_job { find $path, $origin }
699	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2097	}
700	$o->set_ob_key_value ("_perl_data");
701		2098
702	%$o = %{ Storable::thaw pack "H*", $value };	2099	sub do_load_sync {
		2100	my ($map) = @_;
		2101
		2102	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2103	if $Coro::current == $Coro::main;
		2104
		2105	cf::sync_job { $map->load };
		2106	}
		2107
		2108	our %MAP_PREFETCH;
		2109	our $MAP_PREFETCHER = undef;
		2110
		2111	sub find_async {
		2112	my ($path, $origin, $load) = @_;
		2113
		2114	$path = normalise $path, $origin && $origin->{path};
		2115
		2116	if (my $map = $cf::MAP{$path}) {
		2117	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2118	}
		2119
		2120	$MAP_PREFETCH{$path} |= $load;
		2121
		2122	$MAP_PREFETCHER ||= cf::async {
		2123	$Coro::current->{desc} = "map prefetcher";
		2124
		2125	while (%MAP_PREFETCH) {
		2126	while (my ($k, $v) = each %MAP_PREFETCH) {
		2127	if (my $map = find $k) {
		2128	$map->load if $v;
		2129	}
		2130
		2131	delete $MAP_PREFETCH{$k};
703	}	2132	}
704	}	2133	}
		2134	undef $MAP_PREFETCHER;
		2135	};
		2136	$MAP_PREFETCHER->prio (6);
		2137
		2138	()
		2139	}
		2140
		2141	sub save {
		2142	my ($self) = @_;
		2143
		2144	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2145
		2146	$self->{last_save} = $cf::RUNTIME;
		2147
		2148	return unless $self->dirty;
		2149
		2150	my $save = $self->save_path; utf8::encode $save;
		2151	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2152
		2153	$self->{load_path} = $save;
		2154
		2155	return if $self->{deny_save};
		2156
		2157	local $self->{last_access} = $self->last_access;#d#
		2158
		2159	cf::async {
		2160	$Coro::current->{desc} = "map player save";
		2161	$_->contr->save for $self->players;
		2162	};
		2163
		2164	cf::get_slot 0.02;
		2165
		2166	if ($uniq) {
		2167	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2168	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2169	} else {
		2170	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
705	},	2171	}
706	;
707
708	#############################################################################
709	# core extensions - in perl
710
711	=item cf::player::exists $login
712
713	Returns true when the given account exists.
714
715	=cut
716
717	sub cf::player::exists($) {
718	cf::player::find $_[0]
719	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
720	}	2172	}
721		2173
		2174	sub swap_out {
		2175	my ($self) = @_;
		2176
		2177	# save first because save cedes
		2178	$self->save;
		2179
		2180	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2181
		2182	return if $self->players;
		2183	return if $self->in_memory != cf::MAP_ACTIVE;
		2184	return if $self->{deny_save};
		2185
		2186	$self->in_memory (cf::MAP_SWAPPED);
		2187
		2188	$self->deactivate;
		2189	$_->clear_links_to ($self) for values %cf::MAP;
		2190	$self->clear;
		2191	}
		2192
		2193	sub reset_at {
		2194	my ($self) = @_;
		2195
		2196	# TODO: safety, remove and allow resettable per-player maps
		2197	return 1e99 if $self->{deny_reset};
		2198
		2199	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2200	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2201
		2202	$time + $to
		2203	}
		2204
		2205	sub should_reset {
		2206	my ($self) = @_;
		2207
		2208	$self->reset_at <= $cf::RUNTIME
		2209	}
		2210
		2211	sub reset {
		2212	my ($self) = @_;
		2213
		2214	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2215
		2216	return if $self->players;
		2217
		2218	warn "resetting map ", $self->path;
		2219
		2220	$self->in_memory (cf::MAP_SWAPPED);
		2221
		2222	# need to save uniques path
		2223	unless ($self->{deny_save}) {
		2224	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2225
		2226	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2227	if $uniq;
		2228	}
		2229
		2230	delete $cf::MAP{$self->path};
		2231
		2232	$self->deactivate;
		2233	$_->clear_links_to ($self) for values %cf::MAP;
		2234	$self->clear;
		2235
		2236	$self->unlink_save;
		2237	$self->destroy;
		2238	}
		2239
		2240	my $nuke_counter = "aaaa";
		2241
		2242	sub nuke {
		2243	my ($self) = @_;
		2244
		2245	{
		2246	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2247
		2248	delete $cf::MAP{$self->path};
		2249
		2250	$self->unlink_save;
		2251
		2252	bless $self, "cf::map";
		2253	delete $self->{deny_reset};
		2254	$self->{deny_save} = 1;
		2255	$self->reset_timeout (1);
		2256	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2257
		2258	$cf::MAP{$self->path} = $self;
		2259	}
		2260
		2261	$self->reset; # polite request, might not happen
		2262	}
		2263
		2264	=item $maps = cf::map::tmp_maps
		2265
		2266	Returns an arrayref with all map paths of currently instantiated and saved
		2267	maps. May block.
		2268
		2269	=cut
		2270
		2271	sub tmp_maps() {
		2272	[
		2273	map {
		2274	utf8::decode $_;
		2275	/\.map$/
		2276	? normalise $_
		2277	: ()
		2278	} @{ aio_readdir $TMPDIR or [] }
		2279	]
		2280	}
		2281
		2282	=item $maps = cf::map::random_maps
		2283
		2284	Returns an arrayref with all map paths of currently instantiated and saved
		2285	random maps. May block.
		2286
		2287	=cut
		2288
		2289	sub random_maps() {
		2290	[
		2291	map {
		2292	utf8::decode $_;
		2293	/\.map$/
		2294	? normalise "?random/$_"
		2295	: ()
		2296	} @{ aio_readdir $RANDOMDIR or [] }
		2297	]
		2298	}
		2299
		2300	=item cf::map::unique_maps
		2301
		2302	Returns an arrayref of paths of all shared maps that have
		2303	instantiated unique items. May block.
		2304
		2305	=cut
		2306
		2307	sub unique_maps() {
		2308	[
		2309	map {
		2310	utf8::decode $_;
		2311	s/\.map$//; # TODO future compatibility hack
		2312	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2313	? ()
		2314	: normalise $_
		2315	} @{ aio_readdir $UNIQUEDIR or [] }
		2316	]
		2317	}
		2318
		2319	=back
		2320
		2321	=head3 cf::object
		2322
		2323	=cut
		2324
		2325	package cf::object;
		2326
		2327	=over 4
		2328
		2329	=item $ob->inv_recursive
		2330
		2331	Returns the inventory of the object I<and> their inventories, recursively,
		2332	but I<not> the object itself.
		2333
		2334	=cut
		2335
		2336	sub inv_recursive_;
		2337	sub inv_recursive_ {
		2338	map { $_, inv_recursive_ $_->inv } @_
		2339	}
		2340
		2341	sub inv_recursive {
		2342	inv_recursive_ inv $_[0]
		2343	}
		2344
		2345	=item $ref = $ob->ref
		2346
		2347	Creates and returns a persistent reference to an object that can be stored as a string.
		2348
		2349	=item $ob = cf::object::deref ($refstring)
		2350
		2351	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2352	even if the object actually exists. May block.
		2353
		2354	=cut
		2355
		2356	sub deref {
		2357	my ($ref) = @_;
		2358
		2359	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2360	my ($uuid, $name) = ($1, $2);
		2361	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2362	or return;
		2363	$pl->ob->uuid eq $uuid
		2364	or return;
		2365
		2366	$pl->ob
		2367	} else {
		2368	warn "$ref: cannot resolve object reference\n";
		2369	undef
		2370	}
		2371	}
		2372
		2373	package cf;
		2374
		2375	=back
		2376
		2377	=head3 cf::object::player
		2378
		2379	=over 4
		2380
722	=item $player->reply ($npc, $msg[, $flags])	2381	=item $player_object->reply ($npc, $msg[, $flags])
723		2382
724	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2383	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
725	can be C<undef>. Does the right thing when the player is currently in a	2384	can be C<undef>. Does the right thing when the player is currently in a
726	dialogue with the given NPC character.	2385	dialogue with the given NPC character.
727		2386
728	=cut	2387	=cut
729		2388
		2389	our $SAY_CHANNEL = {
		2390	id => "say",
		2391	title => "Map",
		2392	reply => "say ",
		2393	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2394	};
		2395
		2396	our $CHAT_CHANNEL = {
		2397	id => "chat",
		2398	title => "Chat",
		2399	reply => "chat ",
		2400	tooltip => "Player chat and shouts, global to the server.",
		2401	};
		2402
730	# rough implementation of a future "reply" method that works	2403	# rough implementation of a future "reply" method that works
731	# with dialog boxes.	2404	# with dialog boxes.
		2405	#TODO: the first argument must go, split into a $npc->reply_to ( method
732	sub cf::object::player::reply($$$;$) {	2406	sub cf::object::player::reply($$$;$) {
733	my ($self, $npc, $msg, $flags) = @_;	2407	my ($self, $npc, $msg, $flags) = @_;
734		2408
735	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2409	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
736		2410
737	if ($self->{record_replies}) {	2411	if ($self->{record_replies}) {
738	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2412	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2413
739	} else {	2414	} else {
		2415	my $pl = $self->contr;
		2416
		2417	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2418	my $dialog = $pl->{npc_dialog};
		2419	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2420
		2421	} else {
740	$msg = $npc->name . " says: $msg" if $npc;	2422	$msg = $npc->name . " says: $msg" if $npc;
741	$self->message ($msg, $flags);	2423	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2424	}
		2425	}
		2426	}
		2427
		2428	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2429
		2430	=cut
		2431
		2432	sub cf::object::send_msg {
		2433	my $pl = shift->contr
		2434	or return;
		2435	$pl->send_msg (@_);
		2436	}
		2437
		2438	=item $player_object->may ("access")
		2439
		2440	Returns wether the given player is authorized to access resource "access"
		2441	(e.g. "command_wizcast").
		2442
		2443	=cut
		2444
		2445	sub cf::object::player::may {
		2446	my ($self, $access) = @_;
		2447
		2448	$self->flag (cf::FLAG_WIZ) ||
		2449	(ref $cf::CFG{"may_$access"}
		2450	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2451	: $cf::CFG{"may_$access"})
		2452	}
		2453
		2454	=item $player_object->enter_link
		2455
		2456	Freezes the player and moves him/her to a special map (C<{link}>).
		2457
		2458	The player should be reasonably safe there for short amounts of time (e.g.
		2459	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2460	though, as the palyer cannot control the character while it is on the link
		2461	map.
		2462
		2463	Will never block.
		2464
		2465	=item $player_object->leave_link ($map, $x, $y)
		2466
		2467	Moves the player out of the special C<{link}> map onto the specified
		2468	map. If the map is not valid (or omitted), the player will be moved back
		2469	to the location he/she was before the call to C<enter_link>, or, if that
		2470	fails, to the emergency map position.
		2471
		2472	Might block.
		2473
		2474	=cut
		2475
		2476	sub link_map {
		2477	unless ($LINK_MAP) {
		2478	$LINK_MAP = cf::map::find "{link}"
		2479	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2480	$LINK_MAP->load;
		2481	}
		2482
		2483	$LINK_MAP
		2484	}
		2485
		2486	sub cf::object::player::enter_link {
		2487	my ($self) = @_;
		2488
		2489	$self->deactivate_recursive;
		2490
		2491	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2492
		2493	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2494	if $self->map && $self->map->{path} ne "{link}";
		2495
		2496	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2497	}
		2498
		2499	sub cf::object::player::leave_link {
		2500	my ($self, $map, $x, $y) = @_;
		2501
		2502	return unless $self->contr->active;
		2503
		2504	my $link_pos = delete $self->{_link_pos};
		2505
		2506	unless ($map) {
		2507	# restore original map position
		2508	($map, $x, $y) = @{ $link_pos || [] };
		2509	$map = cf::map::find $map;
		2510
		2511	unless ($map) {
		2512	($map, $x, $y) = @$EMERGENCY_POSITION;
		2513	$map = cf::map::find $map
		2514	or die "FATAL: cannot load emergency map\n";
		2515	}
		2516	}
		2517
		2518	($x, $y) = (-1, -1)
		2519	unless (defined $x) && (defined $y);
		2520
		2521	# use -1 or undef as default coordinates, not 0, 0
		2522	($x, $y) = ($map->enter_x, $map->enter_y)
		2523	if $x <=0 && $y <= 0;
		2524
		2525	$map->load;
		2526	$map->load_neighbours;
		2527
		2528	return unless $self->contr->active;
		2529	$self->flag (cf::FLAG_DEBUG, 0);#d# temp
		2530	$self->activate_recursive;
		2531
		2532	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2533	$self->enter_map ($map, $x, $y);
		2534	}
		2535
		2536	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2537
		2538	Moves the player to the given map-path and coordinates by first freezing
		2539	her, loading and preparing them map, calling the provided $check callback
		2540	that has to return the map if sucecssful, and then unfreezes the player on
		2541	the new (success) or old (failed) map position. In either case, $done will
		2542	be called at the end of this process.
		2543
		2544	Note that $check will be called with a potentially non-loaded map, so if
		2545	it needs a loaded map it has to call C<< ->load >>.
		2546
		2547	=cut
		2548
		2549	our $GOTOGEN;
		2550
		2551	sub cf::object::player::goto {
		2552	my ($self, $path, $x, $y, $check, $done) = @_;
		2553
		2554	# do generation counting so two concurrent goto's will be executed in-order
		2555	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2556
		2557	$self->enter_link;
		2558
		2559	(async {
		2560	$Coro::current->{desc} = "player::goto $path $x $y";
		2561
		2562	# *tag paths override both path and x|y
		2563	if ($path =~ /^\*(.*)$/) {
		2564	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2565	my $ob = $obs[rand @obs];
		2566
		2567	# see if we actually can go there
		2568	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2569	$ob = $obs[rand @obs];
		2570	} else {
		2571	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2572	}
		2573	# else put us there anyways for now #d#
		2574
		2575	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2576	} else {
		2577	($path, $x, $y) = (undef, undef, undef);
		2578	}
		2579	}
		2580
		2581	my $map = eval {
		2582	my $map = defined $path ? cf::map::find $path : undef;
		2583
		2584	if ($map) {
		2585	$map = $map->customise_for ($self);
		2586	$map = $check->($map) if $check && $map;
		2587	} else {
		2588	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2589	}
		2590
		2591	$map
		2592	};
		2593
		2594	if ($@) {
		2595	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2596	LOG llevError | logBacktrace, Carp::longmess $@;
		2597	}
		2598
		2599	if ($gen == $self->{_goto_generation}) {
		2600	delete $self->{_goto_generation};
		2601	$self->leave_link ($map, $x, $y);
		2602	}
		2603
		2604	$done->() if $done;
		2605	})->prio (1);
		2606	}
		2607
		2608	=item $player_object->enter_exit ($exit_object)
		2609
		2610	=cut
		2611
		2612	sub parse_random_map_params {
		2613	my ($spec) = @_;
		2614
		2615	my $rmp = { # defaults
		2616	xsize => (cf::rndm 15, 40),
		2617	ysize => (cf::rndm 15, 40),
		2618	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2619	#layout => string,
742	}	2620	};
743	}
744		2621
		2622	for (split /\n/, $spec) {
		2623	my ($k, $v) = split /\s+/, $_, 2;
		2624
		2625	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2626	}
		2627
		2628	$rmp
		2629	}
		2630
		2631	sub prepare_random_map {
		2632	my ($exit) = @_;
		2633
		2634	# all this does is basically replace the /! path by
		2635	# a new random map path (?random/...) with a seed
		2636	# that depends on the exit object
		2637
		2638	my $rmp = parse_random_map_params $exit->msg;
		2639
		2640	if ($exit->map) {
		2641	$rmp->{region} = $exit->region->name;
		2642	$rmp->{origin_map} = $exit->map->path;
		2643	$rmp->{origin_x} = $exit->x;
		2644	$rmp->{origin_y} = $exit->y;
		2645
		2646	$exit->map->touch;
		2647	}
		2648
		2649	$rmp->{random_seed} ||= $exit->random_seed;
		2650
		2651	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2652	my $md5 = Digest::MD5::md5_hex $data;
		2653	my $meta = "$RANDOMDIR/$md5.meta";
		2654
		2655	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2656	aio_write $fh, 0, (length $data), $data, 0;
		2657	undef $fh;
		2658	aio_rename "$meta~", $meta;
		2659
		2660	my $slaying = "?random/$md5";
		2661
		2662	if ($exit->valid) {
		2663	$exit->slaying ("?random/$md5");
		2664	$exit->msg (undef);
		2665	}
		2666	}
		2667	}
		2668
		2669	sub cf::object::player::enter_exit {
		2670	my ($self, $exit) = @_;
		2671
		2672	return unless $self->type == cf::PLAYER;
		2673
		2674	$self->enter_link;
		2675
		2676	(async {
		2677	$Coro::current->{desc} = "enter_exit";
		2678
		2679	unless (eval {
		2680	$self->deactivate_recursive; # just to be sure
		2681
		2682	# random map handling
		2683	{
		2684	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2685
		2686	prepare_random_map $exit
		2687	if $exit->slaying eq "/!";
		2688	}
		2689
		2690	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2691	my $x = $exit->stats->hp;
		2692	my $y = $exit->stats->sp;
		2693
		2694	$self->goto ($map, $x, $y);
		2695
		2696	# if exit is damned, update players death & WoR home-position
		2697	$self->contr->savebed ($map, $x, $y)
		2698	if $exit->flag (cf::FLAG_DAMNED);
		2699
		2700	1
		2701	}) {
		2702	$self->message ("Something went wrong deep within the deliantra server. "
		2703	. "I'll try to bring you back to the map you were before. "
		2704	. "Please report this to the dungeon master!",
		2705	cf::NDI_UNIQUE | cf::NDI_RED);
		2706
		2707	warn "ERROR in enter_exit: $@";
		2708	$self->leave_link;
		2709	}
		2710	})->prio (1);
		2711	}
		2712
		2713	=head3 cf::client
		2714
		2715	=over 4
		2716
		2717	=item $client->send_drawinfo ($text, $flags)
		2718
		2719	Sends a drawinfo packet to the client. Circumvents output buffering so
		2720	should not be used under normal circumstances.
		2721
		2722	=cut
		2723
		2724	sub cf::client::send_drawinfo {
		2725	my ($self, $text, $flags) = @_;
		2726
		2727	utf8::encode $text;
		2728	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2729	}
		2730
		2731	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2732
		2733	Send a drawinfo or msg packet to the client, formatting the msg for the
		2734	client if neccessary. C<$type> should be a string identifying the type of
		2735	the message, with C<log> being the default. If C<$color> is negative, suppress
		2736	the message unless the client supports the msg packet.
		2737
		2738	=cut
		2739
		2740	# non-persistent channels (usually the info channel)
		2741	our %CHANNEL = (
		2742	"c/identify" => {
		2743	id => "infobox",
		2744	title => "Identify",
		2745	reply => undef,
		2746	tooltip => "Items recently identified",
		2747	},
		2748	"c/examine" => {
		2749	id => "infobox",
		2750	title => "Examine",
		2751	reply => undef,
		2752	tooltip => "Signs and other items you examined",
		2753	},
		2754	"c/book" => {
		2755	id => "infobox",
		2756	title => "Book",
		2757	reply => undef,
		2758	tooltip => "The contents of a note or book",
		2759	},
		2760	"c/lookat" => {
		2761	id => "infobox",
		2762	title => "Look",
		2763	reply => undef,
		2764	tooltip => "What you saw there",
		2765	},
		2766	"c/who" => {
		2767	id => "infobox",
		2768	title => "Players",
		2769	reply => undef,
		2770	tooltip => "Shows players who are currently online",
		2771	},
		2772	"c/body" => {
		2773	id => "infobox",
		2774	title => "Body Parts",
		2775	reply => undef,
		2776	tooltip => "Shows which body parts you posess and are available",
		2777	},
		2778	"c/statistics" => {
		2779	id => "infobox",
		2780	title => "Statistics",
		2781	reply => undef,
		2782	tooltip => "Shows your primary statistics",
		2783	},
		2784	"c/skills" => {
		2785	id => "infobox",
		2786	title => "Skills",
		2787	reply => undef,
		2788	tooltip => "Shows your experience per skill and item power",
		2789	},
		2790	"c/resistances" => {
		2791	id => "infobox",
		2792	title => "Resistances",
		2793	reply => undef,
		2794	tooltip => "Shows your resistances",
		2795	},
		2796	"c/pets" => {
		2797	id => "infobox",
		2798	title => "Pets",
		2799	reply => undef,
		2800	tooltip => "Shows information abotu your pets/a specific pet",
		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	"c/death" => {
		2821	id => "death",
		2822	title => "Death",
		2823	reply => undef,
		2824	tooltip => "Reason for and more info about your most recent death",
		2825	},
		2826	"c/say" => $SAY_CHANNEL,
		2827	"c/chat" => $CHAT_CHANNEL,
		2828	);
		2829
		2830	sub cf::client::send_msg {
		2831	my ($self, $channel, $msg, $color, @extra) = @_;
		2832
		2833	$msg = $self->pl->expand_cfpod ($msg)
		2834	unless $color & cf::NDI_VERBATIM;
		2835
		2836	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2837
		2838	# check predefined channels, for the benefit of C
		2839	if ($CHANNEL{$channel}) {
		2840	$channel = $CHANNEL{$channel};
		2841
		2842	$self->ext_msg (channel_info => $channel);
		2843	$channel = $channel->{id};
		2844
		2845	} elsif (ref $channel) {
		2846	# send meta info to client, if not yet sent
		2847	unless (exists $self->{channel}{$channel->{id}}) {
		2848	$self->{channel}{$channel->{id}} = $channel;
		2849	$self->ext_msg (channel_info => $channel);
		2850	}
		2851
		2852	$channel = $channel->{id};
		2853	}
		2854
		2855	return unless @extra || length $msg;
		2856
		2857	# default colour, mask it out
		2858	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2859	if $color & cf::NDI_DEF;
		2860
		2861	my $pkt = "msg "
		2862	. $self->{json_coder}->encode (
		2863	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2864	);
		2865
		2866	# try lzf for large packets
		2867	$pkt = "lzf " . Compress::LZF::compress $pkt
		2868	if 1024 <= length $pkt and $self->{can_lzf};
		2869
		2870	# split very large packets
		2871	if (8192 < length $pkt and $self->{can_lzf}) {
		2872	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2873	$pkt = "frag";
		2874	}
		2875
		2876	$self->send_packet ($pkt);
		2877	}
		2878
		2879	=item $client->ext_msg ($type, @msg)
		2880
		2881	Sends an ext event to the client.
		2882
		2883	=cut
		2884
		2885	sub cf::client::ext_msg($$@) {
		2886	my ($self, $type, @msg) = @_;
		2887
		2888	if ($self->extcmd == 2) {
		2889	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2890	} elsif ($self->extcmd == 1) { # TODO: remove
		2891	push @msg, msgtype => "event_$type";
		2892	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2893	}
		2894	}
		2895
745	=item $player->ext_reply ($msgid, $msgtype, %msg)	2896	=item $client->ext_reply ($msgid, @msg)
746		2897
747	Sends an ext reply to the player.	2898	Sends an ext reply to the client.
748		2899
749	=cut	2900	=cut
750		2901
751	sub cf::player::ext_reply($$$%) {	2902	sub cf::client::ext_reply($$@) {
752	my ($self, $id, %msg) = @_;	2903	my ($self, $id, @msg) = @_;
753		2904
754	$msg{msgid} = $id;	2905	if ($self->extcmd == 2) {
755		2906	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
756	$self->send ("ext " . to_json \%msg);	2907	} elsif ($self->extcmd == 1) {
		2908	#TODO: version 1, remove
		2909	unshift @msg, msgtype => "reply", msgid => $id;
		2910	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2911	}
757	}	2912	}
758		2913
759	#############################################################################	2914	=item $success = $client->query ($flags, "text", \&cb)
760	# map scripting support	2915
		2916	Queues a query to the client, calling the given callback with
		2917	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2918	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2919
		2920	Queries can fail, so check the return code. Or don't, as queries will
		2921	become reliable at some point in the future.
		2922
		2923	=cut
		2924
		2925	sub cf::client::query {
		2926	my ($self, $flags, $text, $cb) = @_;
		2927
		2928	return unless $self->state == ST_PLAYING
		2929	|| $self->state == ST_SETUP
		2930	|| $self->state == ST_CUSTOM;
		2931
		2932	$self->state (ST_CUSTOM);
		2933
		2934	utf8::encode $text;
		2935	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2936
		2937	$self->send_packet ($self->{query_queue}[0][0])
		2938	if @{ $self->{query_queue} } == 1;
		2939
		2940	1
		2941	}
		2942
		2943	cf::client->attach (
		2944	on_connect => sub {
		2945	my ($ns) = @_;
		2946
		2947	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2948	},
		2949	on_reply => sub {
		2950	my ($ns, $msg) = @_;
		2951
		2952	# this weird shuffling is so that direct followup queries
		2953	# get handled first
		2954	my $queue = delete $ns->{query_queue}
		2955	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2956
		2957	(shift @$queue)->[1]->($msg);
		2958	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2959
		2960	push @{ $ns->{query_queue} }, @$queue;
		2961
		2962	if (@{ $ns->{query_queue} } == @$queue) {
		2963	if (@$queue) {
		2964	$ns->send_packet ($ns->{query_queue}[0][0]);
		2965	} else {
		2966	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2967	}
		2968	}
		2969	},
		2970	on_exticmd => sub {
		2971	my ($ns, $buf) = @_;
		2972
		2973	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2974
		2975	if (ref $msg) {
		2976	my ($type, $reply, @payload) =
		2977	"ARRAY" eq ref $msg
		2978	? @$msg
		2979	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2980
		2981	my @reply;
		2982
		2983	if (my $cb = $EXTICMD{$type}) {
		2984	@reply = $cb->($ns, @payload);
		2985	}
		2986
		2987	$ns->ext_reply ($reply, @reply)
		2988	if $reply;
		2989
		2990	} else {
		2991	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2992	}
		2993
		2994	cf::override;
		2995	},
		2996	);
		2997
		2998	=item $client->async (\&cb)
		2999
		3000	Create a new coroutine, running the specified callback. The coroutine will
		3001	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3002	or loss of connection).
		3003
		3004	=cut
		3005
		3006	sub cf::client::async {
		3007	my ($self, $cb) = @_;
		3008
		3009	my $coro = &Coro::async ($cb);
		3010
		3011	$coro->on_destroy (sub {
		3012	delete $self->{_coro}{$coro+0};
		3013	});
		3014
		3015	$self->{_coro}{$coro+0} = $coro;
		3016
		3017	$coro
		3018	}
		3019
		3020	cf::client->attach (
		3021	on_destroy => sub {
		3022	my ($ns) = @_;
		3023
		3024	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3025	},
		3026	);
		3027
		3028	=back
		3029
		3030
		3031	=head2 SAFE SCRIPTING
		3032
		3033	Functions that provide a safe environment to compile and execute
		3034	snippets of perl code without them endangering the safety of the server
		3035	itself. Looping constructs, I/O operators and other built-in functionality
		3036	is not available in the safe scripting environment, and the number of
		3037	functions and methods that can be called is greatly reduced.
		3038
		3039	=cut
761		3040
762	our $safe = new Safe "safe";	3041	our $safe = new Safe "safe";
763	our $safe_hole = new Safe::Hole;	3042	our $safe_hole = new Safe::Hole;
764		3043
765	$SIG{FPE} = 'IGNORE';	3044	$SIG{FPE} = 'IGNORE';
766		3045
767	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3046	$safe->permit_only (Opcode::opset qw(
		3047	:base_core :base_mem :base_orig :base_math
		3048	grepstart grepwhile mapstart mapwhile
		3049	sort time
		3050	));
768		3051
769	# here we export the classes and methods available to script code	3052	# here we export the classes and methods available to script code
770		3053
		3054	=pod
		3055
		3056	The following functions and methods are available within a safe environment:
		3057
		3058	cf::object
		3059	contr pay_amount pay_player map x y force_find force_add destroy
		3060	insert remove name archname title slaying race decrease split
		3061	value
		3062
		3063	cf::object::player
		3064	player
		3065
		3066	cf::player
		3067	peaceful
		3068
		3069	cf::map
		3070	trigger
		3071
		3072	=cut
		3073
771	for (	3074	for (
772	["cf::object" => qw(contr pay_amount pay_player)],	3075	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3076	insert remove inv nrof name archname title slaying race
		3077	decrease split destroy change_exp value msg lore send_msg)],
773	["cf::object::player" => qw(player)],	3078	["cf::object::player" => qw(player)],
774	["cf::player" => qw(peaceful)],	3079	["cf::player" => qw(peaceful send_msg)],
		3080	["cf::map" => qw(trigger)],
775	) {	3081	) {
776	no strict 'refs';	3082	no strict 'refs';
777	my ($pkg, @funs) = @$_;	3083	my ($pkg, @funs) = @$_;
778	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3084	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
779	for @funs;	3085	for @funs;
780	}	3086	}
781		3087
		3088	=over 4
		3089
		3090	=item @retval = safe_eval $code, [var => value, ...]
		3091
		3092	Compiled and executes the given perl code snippet. additional var/value
		3093	pairs result in temporary local (my) scalar variables of the given name
		3094	that are available in the code snippet. Example:
		3095
		3096	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3097
		3098	=cut
		3099
782	sub safe_eval($;@) {	3100	sub safe_eval($;@) {
783	my ($code, %vars) = @_;	3101	my ($code, %vars) = @_;
784		3102
785	my $qcode = $code;	3103	my $qcode = $code;
786	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3104	$qcode =~ s/"/‟/g; # not allowed in #line filenames
787	$qcode =~ s/\n/\\n/g;	3105	$qcode =~ s/\n/\\n/g;
		3106
		3107	%vars = (_dummy => 0) unless %vars;
788		3108
789	local $_;	3109	local $_;
790	local @safe::cf::_safe_eval_args = values %vars;	3110	local @safe::cf::_safe_eval_args = values %vars;
791		3111
792	my $eval =	3112	my $eval =
…		…
830		3150
831	no strict 'refs';	3151	no strict 'refs';
832	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3152	*{"safe::$fun"} = $safe_hole->wrap ($cb);
833	}	3153	}
834		3154
		3155	=back
		3156
		3157	=cut
		3158
835	#############################################################################	3159	#############################################################################
		3160	# the server's init and main functions
836		3161
837	=head2 EXTENSION DATABASE SUPPORT	3162	sub load_facedata($) {
		3163	my ($path) = @_;
838		3164
839	Crossfire maintains a very simple database for extension use. It can	3165	# HACK to clear player env face cache, we need some signal framework
840	currently store anything that can be serialised using Storable, which	3166	# for this (global event?)
841	excludes objects.	3167	%ext::player_env::MUSIC_FACE_CACHE = ();
842		3168
843	The parameter C<$family> should best start with the name of the extension	3169	my $enc = JSON::XS->new->utf8->canonical->relaxed;
844	using it, it should be unique.
845		3170
846	=over 4	3171	warn "loading facedata from $path\n";
847		3172
848	=item $hashref = cf::db_get $family	3173	my $facedata;
		3174	0 < aio_load $path, $facedata
		3175	or die "$path: $!";
849		3176
850	Return a hashref for use by the extension C<$family>, which can be	3177	$facedata = Coro::Storable::thaw $facedata;
851	modified. After modifications, you have to call C<cf::db_dirty> or
852	C<cf::db_sync>.
853		3178
854	=item $value = cf::db_get $family => $key	3179	$facedata->{version} == 2
		3180	or cf::cleanup "$path: version mismatch, cannot proceed.";
855		3181
856	Returns a single value from the database	3182	# patch in the exptable
		3183	$facedata->{resource}{"res/exp_table"} = {
		3184	type => FT_RSRC,
		3185	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3186	};
		3187	cf::cede_to_tick;
857		3188
858	=item cf::db_put $family => $hashref	3189	{
		3190	my $faces = $facedata->{faceinfo};
859		3191
860	Stores the given family hashref into the database. Updates are delayed, if	3192	while (my ($face, $info) = each %$faces) {
861	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3193	my $idx = (cf::face::find $face) || cf::face::alloc $face;
862		3194
863	=item cf::db_put $family => $key => $value	3195	cf::face::set_visibility $idx, $info->{visibility};
		3196	cf::face::set_magicmap $idx, $info->{magicmap};
		3197	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3198	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
864		3199
865	Stores the given C<$value> in the family hash. Updates are delayed, if you	3200	cf::cede_to_tick;
866	want the data to be synced to disk immediately, use C<cf::db_sync>.	3201	}
867		3202
868	=item cf::db_dirty	3203	while (my ($face, $info) = each %$faces) {
		3204	next unless $info->{smooth};
869		3205
870	Marks the database as dirty, to be updated at a later time.	3206	my $idx = cf::face::find $face
		3207	or next;
871		3208
872	=item cf::db_sync	3209	if (my $smooth = cf::face::find $info->{smooth}) {
		3210	cf::face::set_smooth $idx, $smooth;
		3211	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3212	} else {
		3213	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3214	}
873		3215
874	Immediately write the database to disk I<if it is dirty>.	3216	cf::cede_to_tick;
		3217	}
		3218	}
875		3219
876	=cut	3220	{
		3221	my $anims = $facedata->{animinfo};
		3222
		3223	while (my ($anim, $info) = each %$anims) {
		3224	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3225	cf::cede_to_tick;
		3226	}
		3227
		3228	cf::anim::invalidate_all; # d'oh
		3229	}
		3230
		3231	{
		3232	# TODO: for gcfclient pleasure, we should give resources
		3233	# that gcfclient doesn't grok a >10000 face index.
		3234	my $res = $facedata->{resource};
		3235
		3236	while (my ($name, $info) = each %$res) {
		3237	if (defined $info->{type}) {
		3238	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3239	my $data;
		3240
		3241	if ($info->{type} & 1) {
		3242	# prepend meta info
		3243
		3244	my $meta = $enc->encode ({
		3245	name => $name,
		3246	%{ $info->{meta} || {} },
		3247	});
		3248
		3249	$data = pack "(w/a*)*", $meta, $info->{data};
		3250	} else {
		3251	$data = $info->{data};
		3252	}
		3253
		3254	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3255	cf::face::set_type $idx, $info->{type};
		3256	} else {
		3257	$RESOURCE{$name} = $info;
		3258	}
		3259
		3260	cf::cede_to_tick;
		3261	}
		3262	}
		3263
		3264	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3265
		3266	1
		3267	}
		3268
		3269	cf::global->attach (on_resource_update => sub {
		3270	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3271	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3272
		3273	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3274	my $sound = $soundconf->{compat}[$_]
		3275	or next;
		3276
		3277	my $face = cf::face::find "sound/$sound->[1]";
		3278	cf::sound::set $sound->[0] => $face;
		3279	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3280	}
		3281
		3282	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3283	my $face = cf::face::find "sound/$v";
		3284	cf::sound::set $k => $face;
		3285	}
		3286	}
		3287	});
		3288
		3289	register_exticmd fx_want => sub {
		3290	my ($ns, $want) = @_;
		3291
		3292	while (my ($k, $v) = each %$want) {
		3293	$ns->fx_want ($k, $v);
		3294	}
		3295	};
		3296
		3297	sub load_resource_file($) {
		3298	my $guard = lock_acquire "load_resource_file";
		3299
		3300	my $status = load_resource_file_ $_[0];
		3301	get_slot 0.1, 100;
		3302	cf::arch::commit_load;
		3303
		3304	$status
		3305	}
		3306
		3307	sub reload_regions {
		3308	# HACK to clear player env face cache, we need some signal framework
		3309	# for this (global event?)
		3310	%ext::player_env::MUSIC_FACE_CACHE = ();
		3311
		3312	load_resource_file "$MAPDIR/regions"
		3313	or die "unable to load regions file\n";
		3314
		3315	for (cf::region::list) {
		3316	$_->{match} = qr/$_->{match}/
		3317	if exists $_->{match};
		3318	}
		3319	}
		3320
		3321	sub reload_facedata {
		3322	load_facedata "$DATADIR/facedata"
		3323	or die "unable to load facedata\n";
		3324	}
		3325
		3326	sub reload_archetypes {
		3327	load_resource_file "$DATADIR/archetypes"
		3328	or die "unable to load archetypes\n";
		3329	}
		3330
		3331	sub reload_treasures {
		3332	load_resource_file "$DATADIR/treasures"
		3333	or die "unable to load treasurelists\n";
		3334	}
		3335
		3336	sub reload_resources {
		3337	warn "reloading resource files...\n";
		3338
		3339	reload_facedata;
		3340	reload_archetypes;
		3341	reload_regions;
		3342	reload_treasures;
		3343
		3344	warn "finished reloading resource files\n";
		3345	}
		3346
		3347	sub reload_config {
		3348	open my $fh, "<:utf8", "$CONFDIR/config"
		3349	or return;
		3350
		3351	local $/;
		3352	*CFG = YAML::Load <$fh>;
		3353
		3354	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3355
		3356	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3357	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3358
		3359	if (exists $CFG{mlockall}) {
		3360	eval {
		3361	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3362	and die "WARNING: m(un)lockall failed: $!\n";
		3363	};
		3364	warn $@ if $@;
		3365	}
		3366	}
		3367
		3368	sub pidfile() {
		3369	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3370	or die "$PIDFILE: $!";
		3371	flock $fh, &Fcntl::LOCK_EX
		3372	or die "$PIDFILE: flock: $!";
		3373	$fh
		3374	}
		3375
		3376	# make sure only one server instance is running at any one time
		3377	sub atomic {
		3378	my $fh = pidfile;
		3379
		3380	my $pid = <$fh>;
		3381	kill 9, $pid if $pid > 0;
		3382
		3383	seek $fh, 0, 0;
		3384	print $fh $$;
		3385	}
		3386
		3387	sub main {
		3388	cf::init_globals; # initialise logging
		3389
		3390	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3391	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3392	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3393	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3394
		3395	cf::init_experience;
		3396	cf::init_anim;
		3397	cf::init_attackmess;
		3398	cf::init_dynamic;
		3399
		3400	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3401
		3402	# we must not ever block the main coroutine
		3403	local $Coro::idle = sub {
		3404	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3405	(async {
		3406	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3407	EV::loop EV::LOOP_ONESHOT;
		3408	})->prio (Coro::PRIO_MAX);
		3409	};
		3410
		3411	evthread_start IO::AIO::poll_fileno;
		3412
		3413	cf::sync_job {
		3414	reload_resources;
		3415	reload_config;
		3416	db_init;
		3417
		3418	cf::load_settings;
		3419	cf::load_materials;
		3420	cf::init_uuid;
		3421	cf::init_signals;
		3422	cf::init_commands;
		3423	cf::init_skills;
		3424
		3425	cf::init_beforeplay;
		3426
		3427	atomic;
		3428
		3429	load_extensions;
		3430
		3431	utime time, time, $RUNTIMEFILE;
		3432
		3433	# no (long-running) fork's whatsoever before this point(!)
		3434	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3435
		3436	(pop @POST_INIT)->(0) while @POST_INIT;
		3437	};
		3438
		3439	EV::loop;
		3440	}
		3441
		3442	#############################################################################
		3443	# initialisation and cleanup
		3444
		3445	# install some emergency cleanup handlers
		3446	BEGIN {
		3447	our %SIGWATCHER = ();
		3448	for my $signal (qw(INT HUP TERM)) {
		3449	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3450	cf::cleanup "SIG$signal";
		3451	};
		3452	}
		3453	}
		3454
		3455	sub write_runtime_sync {
		3456	# first touch the runtime file to show we are still running:
		3457	# the fsync below can take a very very long time.
		3458
		3459	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3460
		3461	my $guard = cf::lock_acquire "write_runtime";
		3462
		3463	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3464	or return;
		3465
		3466	my $value = $cf::RUNTIME + 90 + 10;
		3467	# 10 is the runtime save interval, for a monotonic clock
		3468	# 60 allows for the watchdog to kill the server.
		3469
		3470	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3471	and return;
		3472
		3473	# always fsync - this file is important
		3474	aio_fsync $fh
		3475	and return;
		3476
		3477	# touch it again to show we are up-to-date
		3478	aio_utime $fh, undef, undef;
		3479
		3480	close $fh
		3481	or return;
		3482
		3483	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3484	and return;
		3485
		3486	warn "runtime file written.\n";
		3487
		3488	1
		3489	}
		3490
		3491	our $uuid_lock;
		3492	our $uuid_skip;
		3493
		3494	sub write_uuid_sync($) {
		3495	$uuid_skip ||= $_[0];
		3496
		3497	return if $uuid_lock;
		3498	local $uuid_lock = 1;
		3499
		3500	my $uuid = "$LOCALDIR/uuid";
		3501
		3502	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3503	or return;
		3504
		3505	my $value = uuid_seq uuid_cur;
		3506
		3507	unless ($value) {
		3508	warn "cowardly refusing to write zero uuid value!\n";
		3509	return;
		3510	}
		3511
		3512	my $value = uuid_str $value + $uuid_skip;
		3513	$uuid_skip = 0;
		3514
		3515	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3516	and return;
		3517
		3518	# always fsync - this file is important
		3519	aio_fsync $fh
		3520	and return;
		3521
		3522	close $fh
		3523	or return;
		3524
		3525	aio_rename "$uuid~", $uuid
		3526	and return;
		3527
		3528	warn "uuid file written ($value).\n";
		3529
		3530	1
		3531
		3532	}
		3533
		3534	sub write_uuid($$) {
		3535	my ($skip, $sync) = @_;
		3536
		3537	$sync ? write_uuid_sync $skip
		3538	: async { write_uuid_sync $skip };
		3539	}
		3540
		3541	sub emergency_save() {
		3542	my $freeze_guard = cf::freeze_mainloop;
		3543
		3544	warn "emergency_perl_save: enter\n";
		3545
		3546	cf::sync_job {
		3547	# this is a trade-off: we want to be very quick here, so
		3548	# save all maps without fsync, and later call a global sync
		3549	# (which in turn might be very very slow)
		3550	local $USE_FSYNC = 0;
		3551
		3552	# use a peculiar iteration method to avoid tripping on perl
		3553	# refcount bugs in for. also avoids problems with players
		3554	# and maps saved/destroyed asynchronously.
		3555	warn "emergency_perl_save: begin player save\n";
		3556	for my $login (keys %cf::PLAYER) {
		3557	my $pl = $cf::PLAYER{$login} or next;
		3558	$pl->valid or next;
		3559	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3560	$pl->save;
		3561	}
		3562	warn "emergency_perl_save: end player save\n";
		3563
		3564	warn "emergency_perl_save: begin map save\n";
		3565	for my $path (keys %cf::MAP) {
		3566	my $map = $cf::MAP{$path} or next;
		3567	$map->valid or next;
		3568	$map->save;
		3569	}
		3570	warn "emergency_perl_save: end map save\n";
		3571
		3572	warn "emergency_perl_save: begin database checkpoint\n";
		3573	BDB::db_env_txn_checkpoint $DB_ENV;
		3574	warn "emergency_perl_save: end database checkpoint\n";
		3575
		3576	warn "emergency_perl_save: begin write uuid\n";
		3577	write_uuid_sync 1;
		3578	warn "emergency_perl_save: end write uuid\n";
		3579	};
		3580
		3581	warn "emergency_perl_save: starting sync()\n";
		3582	IO::AIO::aio_sync sub {
		3583	warn "emergency_perl_save: finished sync()\n";
		3584	};
		3585
		3586	warn "emergency_perl_save: leave\n";
		3587	}
		3588
		3589	sub post_cleanup {
		3590	my ($make_core) = @_;
		3591
		3592	warn Carp::longmess "post_cleanup backtrace"
		3593	if $make_core;
		3594
		3595	my $fh = pidfile;
		3596	unlink $PIDFILE if <$fh> == $$;
		3597	}
		3598
		3599	# a safer delete_package, copied from Symbol
		3600	sub clear_package($) {
		3601	my $pkg = shift;
		3602
		3603	# expand to full symbol table name if needed
		3604	unless ($pkg =~ /^main::.*::$/) {
		3605	$pkg = "main$pkg" if $pkg =~ /^::/;
		3606	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3607	$pkg .= '::' unless $pkg =~ /::$/;
		3608	}
		3609
		3610	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3611	my $stem_symtab = *{$stem}{HASH};
		3612
		3613	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3614	or return;
		3615
		3616	# clear all symbols
		3617	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3618	for my $name (keys %$leaf_symtab) {
		3619	_gv_clear *{"$pkg$name"};
		3620	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3621	}
		3622	warn "cleared package $pkg\n";#d#
		3623	}
		3624
		3625	sub do_reload_perl() {
		3626	# can/must only be called in main
		3627	if ($Coro::current != $Coro::main) {
		3628	warn "can only reload from main coroutine";
		3629	return;
		3630	}
		3631
		3632	return if $RELOAD++;
		3633
		3634	my $t1 = EV::time;
		3635
		3636	while ($RELOAD) {
		3637	warn "reloading...";
		3638
		3639	warn "entering sync_job";
		3640
		3641	cf::sync_job {
		3642	cf::write_runtime_sync; # external watchdog should not bark
		3643	cf::emergency_save;
		3644	cf::write_runtime_sync; # external watchdog should not bark
		3645
		3646	warn "syncing database to disk";
		3647	BDB::db_env_txn_checkpoint $DB_ENV;
		3648
		3649	# if anything goes wrong in here, we should simply crash as we already saved
		3650
		3651	warn "flushing outstanding aio requests";
		3652	while (IO::AIO::nreqs || BDB::nreqs) {
		3653	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3654	}
		3655
		3656	warn "cancelling all extension coros";
		3657	$_->cancel for values %EXT_CORO;
		3658	%EXT_CORO = ();
		3659
		3660	warn "removing commands";
		3661	%COMMAND = ();
		3662
		3663	warn "removing ext/exti commands";
		3664	%EXTCMD = ();
		3665	%EXTICMD = ();
		3666
		3667	warn "unloading/nuking all extensions";
		3668	for my $pkg (@EXTS) {
		3669	warn "... unloading $pkg";
		3670
		3671	if (my $cb = $pkg->can ("unload")) {
		3672	eval {
		3673	$cb->($pkg);
		3674	1
		3675	} or warn "$pkg unloaded, but with errors: $@";
		3676	}
		3677
		3678	warn "... clearing $pkg";
		3679	clear_package $pkg;
		3680	}
		3681
		3682	warn "unloading all perl modules loaded from $LIBDIR";
		3683	while (my ($k, $v) = each %INC) {
		3684	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3685
		3686	warn "... unloading $k";
		3687	delete $INC{$k};
		3688
		3689	$k =~ s/\.pm$//;
		3690	$k =~ s/\//::/g;
		3691
		3692	if (my $cb = $k->can ("unload_module")) {
		3693	$cb->();
		3694	}
		3695
		3696	clear_package $k;
		3697	}
		3698
		3699	warn "getting rid of safe::, as good as possible";
		3700	clear_package "safe::$_"
		3701	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3702
		3703	warn "unloading cf.pm \"a bit\"";
		3704	delete $INC{"cf.pm"};
		3705	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3706
		3707	# don't, removes xs symbols, too,
		3708	# and global variables created in xs
		3709	#clear_package __PACKAGE__;
		3710
		3711	warn "unload completed, starting to reload now";
		3712
		3713	warn "reloading cf.pm";
		3714	require cf;
		3715	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3716
		3717	warn "loading config and database again";
		3718	cf::reload_config;
		3719
		3720	warn "loading extensions";
		3721	cf::load_extensions;
		3722
		3723	if ($REATTACH_ON_RELOAD) {
		3724	warn "reattaching attachments to objects/players";
		3725	_global_reattach; # objects, sockets
		3726	warn "reattaching attachments to maps";
		3727	reattach $_ for values %MAP;
		3728	warn "reattaching attachments to players";
		3729	reattach $_ for values %PLAYER;
		3730	}
		3731
		3732	warn "running post_init jobs";
		3733	(pop @POST_INIT)->(1) while @POST_INIT;
		3734
		3735	warn "leaving sync_job";
		3736
		3737	1
		3738	} or do {
		3739	warn $@;
		3740	cf::cleanup "error while reloading, exiting.";
		3741	};
		3742
		3743	warn "reloaded";
		3744	--$RELOAD;
		3745	}
		3746
		3747	$t1 = EV::time - $t1;
		3748	warn "reload completed in ${t1}s\n";
		3749	};
		3750
		3751	our $RELOAD_WATCHER; # used only during reload
		3752
		3753	sub reload_perl() {
		3754	# doing reload synchronously and two reloads happen back-to-back,
		3755	# coro crashes during coro_state_free->destroy here.
		3756
		3757	$RELOAD_WATCHER ||= cf::async {
		3758	Coro::AIO::aio_wait cache_extensions;
		3759
		3760	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
		3761	do_reload_perl;
		3762	undef $RELOAD_WATCHER;
		3763	};
		3764	};
		3765	}
		3766
		3767	register_command "reload" => sub {
		3768	my ($who, $arg) = @_;
		3769
		3770	if ($who->flag (FLAG_WIZ)) {
		3771	$who->message ("reloading server.");
		3772	async {
		3773	$Coro::current->{desc} = "perl_reload";
		3774	reload_perl;
		3775	};
		3776	}
		3777	};
		3778
		3779	unshift @INC, $LIBDIR;
		3780
		3781	my $bug_warning = 0;
		3782
		3783	our @WAIT_FOR_TICK;
		3784	our @WAIT_FOR_TICK_BEGIN;
		3785
		3786	sub wait_for_tick {
		3787	return if tick_inhibit || $Coro::current == $Coro::main;
		3788
		3789	my $signal = new Coro::Signal;
		3790	push @WAIT_FOR_TICK, $signal;
		3791	$signal->wait;
		3792	}
		3793
		3794	sub wait_for_tick_begin {
		3795	return if tick_inhibit || $Coro::current == $Coro::main;
		3796
		3797	my $signal = new Coro::Signal;
		3798	push @WAIT_FOR_TICK_BEGIN, $signal;
		3799	$signal->wait;
		3800	}
		3801
		3802	sub tick {
		3803	if ($Coro::current != $Coro::main) {
		3804	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3805	unless ++$bug_warning > 10;
		3806	return;
		3807	}
		3808
		3809	cf::server_tick; # one server iteration
		3810
		3811	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3812	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3813	Coro::async_pool {
		3814	$Coro::current->{desc} = "runtime saver";
		3815	write_runtime_sync
		3816	or warn "ERROR: unable to write runtime file: $!";
		3817	};
		3818	}
		3819
		3820	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3821	$sig->send;
		3822	}
		3823	while (my $sig = shift @WAIT_FOR_TICK) {
		3824	$sig->send;
		3825	}
		3826
		3827	$LOAD = ($NOW - $TICK_START) / $TICK;
		3828	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3829
		3830	if (0) {
		3831	if ($NEXT_TICK) {
		3832	my $jitter = $TICK_START - $NEXT_TICK;
		3833	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3834	warn "jitter $JITTER\n";#d#
		3835	}
		3836	}
		3837	}
877		3838
878	{	3839	{
879	my $db;	3840	# configure BDB
880	my $path = cf::localdir . "/database.pst";
881		3841
882	sub db_load() {	3842	BDB::min_parallel 8;
883	warn "loading database $path\n";#d# remove later	3843	BDB::max_poll_reqs $TICK * 0.1;
884	$db = stat $path ? Storable::retrieve $path : { };	3844	$AnyEvent::BDB::WATCHER->priority (1);
885	}
886		3845
887	my $pid;	3846	unless ($DB_ENV) {
		3847	$DB_ENV = BDB::db_env_create;
		3848	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3849	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3850	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3851	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3852	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
888		3853
889	sub db_save() {	3854	cf::sync_job {
890	warn "saving database $path\n";#d# remove later
891	waitpid $pid, 0 if $pid;
892	if (0 == ($pid = fork)) {
893	$db->{_meta}{version} = 1;
894	Storable::nstore $db, "$path~";
895	rename "$path~", $path;
896	cf::_exit 0 if defined $pid;
897	}
898	}
899
900	my $dirty;
901
902	sub db_sync() {
903	db_save if $dirty;
904	undef $dirty;
905	}
906
907	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
908	db_sync;
909	});
910
911	sub db_dirty() {
912	$dirty = 1;
913	$idle->start;
914	}
915
916	sub db_get($;$) {
917	@_ >= 2
918	? $db->{$_[0]}{$_[1]}
919	: ($db->{$_[0]} ||= { })
920	}
921
922	sub db_put($$;$) {
923	if (@_ >= 3) {
924	$db->{$_[0]}{$_[1]} = $_[2];
925	} else {	3855	eval {
926	$db->{$_[0]} = $_[1];	3856	BDB::db_env_open
927	}	3857	$DB_ENV,
928	db_dirty;	3858	$BDBDIR,
929	}	3859	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3860	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3861	0666;
930		3862
931	attach_global	3863	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
932	prio => 10000,
933	on_cleanup => sub {
934	db_sync;
935	},
936	;
937	}
938
939	#############################################################################
940	# the server's main()
941
942	sub main {
943	db_load;
944	load_extensions;
945	Event::loop;
946	}
947
948	#############################################################################
949	# initialisation
950
951	sub _perl_reload(&) {
952	my ($msg) = @_;
953
954	$msg->("reloading...");
955
956	eval {
957	# cancel all watchers
958	$_->cancel for Event::all_watchers;
959
960	# unload all extensions
961	for (@exts) {
962	$msg->("unloading <$_>");
963	unload_extension $_;
964	}
965
966	# unload all modules loaded from $LIBDIR
967	while (my ($k, $v) = each %INC) {
968	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
969
970	$msg->("removing <$k>");
971	delete $INC{$k};
972
973	$k =~ s/\.pm$//;
974	$k =~ s/\//::/g;
975
976	if (my $cb = $k->can ("unload_module")) {
977	$cb->();
978	}	3864	};
979		3865
980	Symbol::delete_package $k;	3866	cf::cleanup "db_env_open(db): $@" if $@;
981	}	3867	};
		3868	}
982		3869
983	# sync database to disk	3870	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
984	cf::db_sync;	3871	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
985
986	# get rid of safe::, as good as possible
987	Symbol::delete_package "safe::$_"
988	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
989
990	# remove register_script_function callbacks
991	# TODO
992
993	# unload cf.pm "a bit"
994	delete $INC{"cf.pm"};
995
996	# don't, removes xs symbols, too,
997	# and global variables created in xs
998	#Symbol::delete_package __PACKAGE__;
999
1000	# reload cf.pm
1001	$msg->("reloading cf.pm");
1002	require cf;
1003
1004	# load database again
1005	cf::db_load;
1006
1007	# load extensions
1008	$msg->("load extensions");
1009	cf::load_extensions;
1010
1011	# reattach attachments to objects
1012	$msg->("reattach");
1013	_global_reattach;
1014	};	3872	};
1015	$msg->($@) if $@;	3873	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1016		3874	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1017	$msg->("reloaded");
1018	};
1019
1020	sub perl_reload() {
1021	_perl_reload {
1022	warn $_[0];
1023	print "$_[0]\n";
1024	};	3875	};
		3876	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3877	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3878	};
1025	}	3879	}
1026		3880
1027	register_command "perl-reload", 0, sub {	3881	{
		3882	# configure IO::AIO
		3883
		3884	IO::AIO::min_parallel 8;
		3885	IO::AIO::max_poll_time $TICK * 0.1;
		3886	undef $AnyEvent::AIO::WATCHER;
		3887	}
		3888
		3889	my $_log_backtrace;
		3890
		3891	sub _log_backtrace {
1028	my ($who, $arg) = @_;	3892	my ($msg, @addr) = @_;
1029		3893
1030	if ($who->flag (FLAG_WIZ)) {	3894	$msg =~ s/\n//;
1031	_perl_reload {	3895
1032	warn $_[0];	3896	# limit the # of concurrent backtraces
1033	$who->message ($_[0]);	3897	if ($_log_backtrace < 2) {
		3898	++$_log_backtrace;
		3899	my $perl_bt = Carp::longmess $msg;
		3900	async {
		3901	$Coro::current->{desc} = "abt $msg";
		3902
		3903	my @bt = fork_call {
		3904	@addr = map { sprintf "%x", $_ } @addr;
		3905	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3906	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3907	or die "addr2line: $!";
		3908
		3909	my @funcs;
		3910	my @res = <$fh>;
		3911	chomp for @res;
		3912	while (@res) {
		3913	my ($func, $line) = splice @res, 0, 2, ();
		3914	push @funcs, "[$func] $line";
		3915	}
		3916
		3917	@funcs
		3918	};
		3919
		3920	LOG llevInfo, "[ABT] $perl_bt\n";
		3921	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3922	LOG llevInfo, "[ABT] $_\n" for @bt;
		3923	--$_log_backtrace;
1034	};	3924	};
1035	}	3925	} else {
1036	};	3926	LOG llevInfo, "[ABT] $msg\n";
1037		3927	LOG llevInfo, "[ABT] [suppressed]\n";
1038	register "<global>", __PACKAGE__;
1039
1040	unshift @INC, $LIBDIR;
1041
1042	$TICK_WATCHER = Event->timer (
1043	prio => 1,
1044	at => $NEXT_TICK || 1,
1045	cb => sub {
1046	cf::server_tick; # one server iteration
1047
1048	my $NOW = Event::time;
1049	$NEXT_TICK += $TICK;
1050
1051	# if we are delayed by four ticks, skip them all
1052	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1053
1054	$TICK_WATCHER->at ($NEXT_TICK);
1055	$TICK_WATCHER->start;
1056	},	3928	}
1057	);	3929	}
		3930
		3931	# load additional modules
		3932	require "cf/$_.pm" for @EXTRA_MODULES;
		3933
		3934	END { cf::emergency_save }
1058		3935
1059	1	3936	1
1060		3937

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