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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.92 by root, Thu Dec 21 06:42:28 2006 UTC vs.
Revision 1.486 by root, Thu Oct 15 21:56:50 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 it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# 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 Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
		24
		25	use 5.10.0;
		26	use utf8;
		27	use strict qw(vars subs);
2		28
3	use Symbol;	29	use Symbol;
4	use List::Util;	30	use List::Util;
5	use Storable;	31	use Socket;
		32	use EV;
6	use Opcode;	33	use Opcode;
7	use Safe;	34	use Safe;
8	use Safe::Hole;	35	use Safe::Hole;
		36	use Storable ();
9		37
		38	use Guard ();
		39	use Coro ();
		40	use Coro::State;
		41	use Coro::Handle;
		42	use Coro::EV;
		43	use Coro::AnyEvent;
		44	use Coro::Timer;
		45	use Coro::Signal;
		46	use Coro::Semaphore;
		47	use Coro::SemaphoreSet;
		48	use Coro::AnyEvent;
		49	use Coro::AIO;
		50	use Coro::BDB 1.6;
		51	use Coro::Storable;
		52	use Coro::Util ();
		53
		54	use JSON::XS 2.01 ();
		55	use BDB ();
		56	use Data::Dumper;
		57	use Digest::MD5;
		58	use Fcntl;
		59	use YAML::XS ();
10	use IO::AIO ();	60	use IO::AIO ();
11	use YAML::Syck ();
12	use Time::HiRes;	61	use Time::HiRes;
13	use Event;	62	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	63	use Digest::MD5 ();
15		64
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	65	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		66
19	use strict;	67	# configure various modules to our taste
		68	#
		69	$Storable::canonical = 1; # reduce rsync transfers
		70	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		71
		72	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		73
		74	# make sure c-lzf reinitialises itself
		75	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		76	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		77
		78	# strictly for debugging
		79	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
20		80
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	81	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		82
23	our %COMMAND = ();	83	our %COMMAND = ();
24	our %COMMAND_TIME = ();	84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
26		91
27	_init_vars;	92	our $RELOAD; # number of reloads so far, non-zero while in reload
28
29	our @EVENT;	93	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
31		96
32	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
33	our $TICK_WATCHER;	98	our $DATADIR = datadir;
		99	our $LIBDIR = "$DATADIR/ext";
		100	our $PODDIR = "$DATADIR/pod";
		101	our $MAPDIR = "$DATADIR/" . mapdir;
		102	our $LOCALDIR = localdir;
		103	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		104	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		105	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		106	our $RANDOMDIR = "$LOCALDIR/random";
		107	our $BDBDIR = "$LOCALDIR/db";
		108	our $PIDFILE = "$LOCALDIR/pid";
		109	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		110
		111	our %RESOURCE;
		112
		113	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		114	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	115	our $NEXT_TICK;
		116	our $USE_FSYNC = 1; # use fsync to write maps - default on
		117
		118	our $BDB_DEADLOCK_WATCHER;
		119	our $BDB_CHECKPOINT_WATCHER;
		120	our $BDB_TRICKLE_WATCHER;
		121	our $DB_ENV;
		122
		123	our @EXTRA_MODULES = qw(pod match mapscript);
35		124
36	our %CFG;	125	our %CFG;
37		126
38	our $UPTIME; $UPTIME ||= time;	127	our $UPTIME; $UPTIME ||= time;
		128	our $RUNTIME;
		129	our $NOW;
		130
		131	our (%PLAYER, %PLAYER_LOADING); # all users
		132	our (%MAP, %MAP_LOADING ); # all maps
		133	our $LINK_MAP; # the special {link} map, which is always available
		134
		135	# used to convert map paths into valid unix filenames by replacing / by ∕
		136	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		137
		138	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		139	our $LOADAVG; # same thing, but with alpha-smoothing
		140	our $JITTER; # average jitter
		141	our $TICK_START; # for load detecting purposes
		142
		143	our @POST_INIT;
		144
		145	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		146	our $REALLY_UNLOOP; # never set to true, please :)
		147
		148	binmode STDOUT;
		149	binmode STDERR;
		150
		151	# read virtual server time, if available
		152	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		153	open my $fh, "<", $RUNTIMEFILE
		154	or die "unable to read $RUNTIMEFILE file: $!";
		155	$RUNTIME = <$fh> + 0.;
		156	}
		157
		158	eval "sub TICK() { $TICK } 1" or die;
		159
		160	mkdir $_
		161	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		162
		163	our $EMERGENCY_POSITION;
		164
		165	sub cf::map::normalise;
39		166
40	#############################################################################	167	#############################################################################
41		168
		169	%REFLECT = ();
		170	for (@REFLECT) {
		171	my $reflect = JSON::XS::decode_json $_;
		172	$REFLECT{$reflect->{class}} = $reflect;
		173	}
		174
		175	# this is decidedly evil
		176	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		177
		178	#############################################################################
		179
42	=head2 GLOBAL VARIABLES	180	=head2 GLOBAL VARIABLES
43		181
44	=over 4	182	=over 4
45		183
46	=item $cf::UPTIME	184	=item $cf::UPTIME
47		185
48	The timestamp of the server start (so not actually an uptime).	186	The timestamp of the server start (so not actually an uptime).
49		187
50	=item $cf::LIBDIR	188	=item $cf::RUNTIME
51		189
52	The perl library directory, where extensions and cf-specific modules can	190	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	191	every server tick.
		192
		193	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		194	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		195	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		196
		197	Various directories - "/etc", read-only install directory, perl-library
		198	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		199	unique-items directory, player file directory, random maps directory and
		200	database environment.
		201
		202	=item $cf::NOW
		203
		204	The time of the last (current) server tick.
54		205
55	=item $cf::TICK	206	=item $cf::TICK
56		207
57	The interval between server ticks, in seconds.	208	The interval between server ticks, in seconds.
58		209
		210	=item $cf::LOADAVG
		211
		212	The current CPU load on the server (alpha-smoothed), as a value between 0
		213	(none) and 1 (overloaded), indicating how much time is spent on processing
		214	objects per tick. Healthy values are < 0.5.
		215
		216	=item $cf::LOAD
		217
		218	The raw value load value from the last tick.
		219
59	=item %cf::CFG	220	=item %cf::CFG
60		221
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	222	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
62	from wherever your confdir points to.	223	from wherever your confdir points to.
63		224
		225	=item cf::wait_for_tick, cf::wait_for_tick_begin
		226
		227	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		228	returns directly I<after> the tick processing (and consequently, can only wake one process
		229	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		230
		231	=item @cf::INVOKE_RESULTS
		232
		233	This array contains the results of the last C<invoke ()> call. When
		234	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		235	that call.
		236
		237	=item %cf::REFLECT
		238
		239	Contains, for each (C++) class name, a hash reference with information
		240	about object members (methods, scalars, arrays and flags) and other
		241	metadata, which is useful for introspection.
		242
64	=back	243	=back
65		244
66	=cut	245	=cut
67		246
68	BEGIN {	247	$Coro::State::WARNHOOK = sub {
69	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	248	my $msg = join "", @_;
		249
71	$msg .= "\n"	250	$msg .= "\n"
72	unless $msg =~ /\n$/;	251	unless $msg =~ /\n$/;
73		252
74	print STDERR "cfperl: $msg";	253	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		254
75	LOG llevError, "cfperl: $msg";	255	LOG llevError, $msg;
76	};	256	};
77	}
78		257
		258	$Coro::State::DIEHOOK = sub {
		259	return unless $^S eq 0; # "eq", not "=="
		260
		261	warn Carp::longmess $_[0];
		262
		263	if ($Coro::current == $Coro::main) {#d#
		264	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		265	return;#d#
		266	}#d#
		267
		268	# kill coroutine otherwise
		269	Coro::terminate
		270	};
		271
		272	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		273	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		274	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		275	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		276	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		277	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	278	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
80		279
81	# we bless all objects into (empty) derived classes to force a method lookup	280	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	281	# within the Safe compartment.
83	for my $pkg (qw(	282	for my $pkg (qw(
		283	cf::global cf::attachable
84	cf::object cf::object::player	284	cf::object cf::object::player
85	cf::client cf::player	285	cf::client cf::player
86	cf::arch cf::living	286	cf::arch cf::living
		287	cf::map cf::mapspace
87	cf::map cf::party cf::region	288	cf::party cf::region
88	)) {	289	)) {
89	no strict 'refs';
90	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	290	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
91	}	291	}
92		292
93	$Event::DIED = sub {	293	$EV::DIED = sub {
94	warn "error in event callback: @_";	294	warn "error in event callback: @_";
95	};	295	};
96		296
97	my %ext_pkg;	297	#############################################################################
98	my @exts;
99	my @hook;
100		298
101	=head2 UTILITY FUNCTIONS	299	=head2 UTILITY FUNCTIONS
102		300
103	=over 4	301	=over 4
104		302
105	=cut	303	=item dumpval $ref
106		304
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	305	=cut
108		306
		307	sub dumpval {
		308	eval {
		309	local $SIG{__DIE__};
		310	my $d;
		311	if (1) {
		312	$d = new Data::Dumper([$_[0]], ["*var"]);
		313	$d->Terse(1);
		314	$d->Indent(2);
		315	$d->Quotekeys(0);
		316	$d->Useqq(1);
		317	#$d->Bless(...);
		318	$d->Seen($_[1]) if @_ > 1;
		319	$d = $d->Dump();
		320	}
		321	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		322	$d
		323	} || "[unable to dump $_[0]: '$@']";
		324	}
		325
109	=item $ref = cf::from_json $json	326	=item $ref = cf::decode_json $json
110		327
111	Converts a JSON string into the corresponding perl data structure.	328	Converts a JSON string into the corresponding perl data structure.
112		329
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	330	=item $json = cf::encode_json $ref
121		331
122	Converts a perl data structure into its JSON representation.	332	Converts a perl data structure into its JSON representation.
123		333
124	=cut	334	=cut
125		335
126	sub to_json($) {	336	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	337
128	JSON::Syck::Dump $_[0]	338	sub encode_json($) { $json_coder->encode ($_[0]) }
		339	sub decode_json($) { $json_coder->decode ($_[0]) }
		340
		341	=item cf::post_init { BLOCK }
		342
		343	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		344	but I<before> the server starts ticking again.
		345
		346	The cdoeblock will have a single boolean argument to indicate whether this
		347	is a reload or not.
		348
		349	=cut
		350
		351	sub post_init(&) {
		352	push @POST_INIT, shift;
		353	}
		354
		355	=item cf::lock_wait $string
		356
		357	Wait until the given lock is available. See cf::lock_acquire.
		358
		359	=item my $lock = cf::lock_acquire $string
		360
		361	Wait until the given lock is available and then acquires it and returns
		362	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		363	for example when the coroutine gets canceled), the lock is automatically
		364	returned.
		365
		366	Locks are *not* recursive, locking from the same coro twice results in a
		367	deadlocked coro.
		368
		369	Lock names should begin with a unique identifier (for example, cf::map::find
		370	uses map_find and cf::map::load uses map_load).
		371
		372	=item $locked = cf::lock_active $string
		373
		374	Return true if the lock is currently active, i.e. somebody has locked it.
		375
		376	=cut
		377
		378	our $LOCKS = new Coro::SemaphoreSet;
		379
		380	sub lock_wait($) {
		381	$LOCKS->wait ($_[0]);
		382	}
		383
		384	sub lock_acquire($) {
		385	$LOCKS->guard ($_[0])
		386	}
		387
		388	sub lock_active($) {
		389	$LOCKS->count ($_[0]) < 1
		390	}
		391
		392	sub freeze_mainloop {
		393	tick_inhibit_inc;
		394
		395	&Guard::guard (\&tick_inhibit_dec);
		396	}
		397
		398	=item cf::periodic $interval, $cb
		399
		400	Like EV::periodic, but randomly selects a starting point so that the actions
		401	get spread over timer.
		402
		403	=cut
		404
		405	sub periodic($$) {
		406	my ($interval, $cb) = @_;
		407
		408	my $start = rand List::Util::min 180, $interval;
		409
		410	EV::periodic $start, $interval, 0, $cb
		411	}
		412
		413	=item cf::get_slot $time[, $priority[, $name]]
		414
		415	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		416	This call blocks and returns only when you have at least C<$time> seconds
		417	of cpu time till the next tick. The slot is only valid till the next cede.
		418
		419	The optional C<$name> can be used to identify the job to run. It might be
		420	used for statistical purposes and should identify the same time-class.
		421
		422	Useful for short background jobs.
		423
		424	=cut
		425
		426	our @SLOT_QUEUE;
		427	our $SLOT_QUEUE;
		428
		429	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		430	$SLOT_QUEUE = Coro::async {
		431	$Coro::current->desc ("timeslot manager");
		432
		433	my $signal = new Coro::Signal;
		434
		435	while () {
		436	next_job:
		437	my $avail = cf::till_tick;
		438	if ($avail > 0.01) {
		439	for (0 .. $#SLOT_QUEUE) {
		440	if ($SLOT_QUEUE[$_][0] < $avail) {
		441	my $job = splice @SLOT_QUEUE, $_, 1, ();
		442	$job->[2]->send;
		443	Coro::cede;
		444	goto next_job;
		445	}
		446	}
		447	}
		448
		449	if (@SLOT_QUEUE) {
		450	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		451	push @cf::WAIT_FOR_TICK, $signal;
		452	$signal->wait;
		453	} else {
		454	Coro::schedule;
		455	}
		456	}
		457	};
		458
		459	sub get_slot($;$$) {
		460	return if tick_inhibit || $Coro::current == $Coro::main;
		461
		462	my ($time, $pri, $name) = @_;
		463
		464	$time = $TICK * .6 if $time > $TICK * .6;
		465	my $sig = new Coro::Signal;
		466
		467	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		468	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		469	$SLOT_QUEUE->ready;
		470	$sig->wait;
		471	}
		472
		473	=item cf::async { BLOCK }
		474
		475	Currently the same as Coro::async_pool, meaning you cannot use
		476	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		477	thing you are allowed to do is call C<prio> on it.
		478
		479	=cut
		480
		481	BEGIN { *async = \&Coro::async_pool }
		482
		483	=item cf::sync_job { BLOCK }
		484
		485	The design of Deliantra requires that the main coroutine ($Coro::main)
		486	is always able to handle events or runnable, as Deliantra is only
		487	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		488	acceptable.
		489
		490	If it must be done, put the blocking parts into C<sync_job>. This will run
		491	the given BLOCK in another coroutine while waiting for the result. The
		492	server will be frozen during this time, so the block should either finish
		493	fast or be very important.
		494
		495	=cut
		496
		497	sub sync_job(&) {
		498	my ($job) = @_;
		499
		500	if ($Coro::current == $Coro::main) {
		501	my $time = EV::time;
		502
		503	# this is the main coro, too bad, we have to block
		504	# till the operation succeeds, freezing the server :/
		505
		506	LOG llevError, Carp::longmess "sync job";#d#
		507
		508	my $freeze_guard = freeze_mainloop;
		509
		510	my $busy = 1;
		511	my @res;
		512
		513	(async {
		514	$Coro::current->desc ("sync job coro");
		515	@res = eval { $job->() };
		516	warn $@ if $@;
		517	undef $busy;
		518	})->prio (Coro::PRIO_MAX);
		519
		520	while ($busy) {
		521	if (Coro::nready) {
		522	Coro::cede_notself;
		523	} else {
		524	EV::loop EV::LOOP_ONESHOT;
		525	}
		526	}
		527
		528	my $time = EV::time - $time;
		529
		530	$TICK_START += $time; # do not account sync jobs to server load
		531
		532	wantarray ? @res : $res[0]
		533	} else {
		534	# we are in another coroutine, how wonderful, everything just works
		535
		536	$job->()
		537	}
		538	}
		539
		540	=item $coro = cf::async_ext { BLOCK }
		541
		542	Like async, but this coro is automatically being canceled when the
		543	extension calling this is being unloaded.
		544
		545	=cut
		546
		547	sub async_ext(&) {
		548	my $cb = shift;
		549
		550	my $coro = &Coro::async ($cb);
		551
		552	$coro->on_destroy (sub {
		553	delete $EXT_CORO{$coro+0};
		554	});
		555	$EXT_CORO{$coro+0} = $coro;
		556
		557	$coro
		558	}
		559
		560	=item fork_call { }, $args
		561
		562	Executes the given code block with the given arguments in a seperate
		563	process, returning the results. Everything must be serialisable with
		564	Coro::Storable. May, of course, block. Note that the executed sub may
		565	never block itself or use any form of event handling.
		566
		567	=cut
		568
		569	sub fork_call(&@) {
		570	my ($cb, @args) = @_;
		571
		572	# we seemingly have to make a local copy of the whole thing,
		573	# otherwise perl prematurely frees the stuff :/
		574	# TODO: investigate and fix (likely this will be rather laborious)
		575
		576	my @res = Coro::Util::fork_eval {
		577	reset_signals;
		578	&$cb
		579	}, @args;
		580
		581	wantarray ? @res : $res[-1]
		582	}
		583
		584	=item $coin = coin_from_name $name
		585
		586	=cut
		587
		588	our %coin_alias = (
		589	"silver" => "silvercoin",
		590	"silvercoin" => "silvercoin",
		591	"silvercoins" => "silvercoin",
		592	"gold" => "goldcoin",
		593	"goldcoin" => "goldcoin",
		594	"goldcoins" => "goldcoin",
		595	"platinum" => "platinacoin",
		596	"platinumcoin" => "platinacoin",
		597	"platinumcoins" => "platinacoin",
		598	"platina" => "platinacoin",
		599	"platinacoin" => "platinacoin",
		600	"platinacoins" => "platinacoin",
		601	"royalty" => "royalty",
		602	"royalties" => "royalty",
		603	);
		604
		605	sub coin_from_name($) {
		606	$coin_alias{$_[0]}
		607	? cf::arch::find $coin_alias{$_[0]}
		608	: undef
		609	}
		610
		611	=item $value = cf::db_get $family => $key
		612
		613	Returns a single value from the environment database.
		614
		615	=item cf::db_put $family => $key => $value
		616
		617	Stores the given C<$value> in the family. It can currently store binary
		618	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		619
		620	=item $db = cf::db_table "name"
		621
		622	Create and/or open a new database table. The string must not be "db" and must be unique
		623	within each server.
		624
		625	=cut
		626
		627	sub db_table($) {
		628	my ($name) = @_;
		629	my $db = BDB::db_create $DB_ENV;
		630
		631	eval {
		632	$db->set_flags (BDB::CHKSUM);
		633
		634	utf8::encode $name;
		635	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		636	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		637	cf::cleanup "db_open(db): $!" if $!;
		638	};
		639	cf::cleanup "db_open(db): $@" if $@;
		640
		641	$db
		642	}
		643
		644	our $DB;
		645
		646	sub db_init {
		647	cf::sync_job {
		648	$DB ||= db_table "db";
		649	};
		650	}
		651
		652	sub db_get($$) {
		653	my $key = "$_[0]/$_[1]";
		654
		655	cf::sync_job {
		656	BDB::db_get $DB, undef, $key, my $data;
		657
		658	$! ? ()
		659	: $data
		660	}
		661	}
		662
		663	sub db_put($$$) {
		664	BDB::dbreq_pri 4;
		665	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		666	}
		667
		668	=item cf::cache $id => [$paths...], $processversion => $process
		669
		670	Generic caching function that returns the value of the resource $id,
		671	caching and regenerating as required.
		672
		673	This function can block.
		674
		675	=cut
		676
		677	sub cache {
		678	my ($id, $src, $processversion, $process) = @_;
		679
		680	my $meta =
		681	join "\x00",
		682	$processversion,
		683	map {
		684	aio_stat $_
		685	and Carp::croak "$_: $!";
		686
		687	($_, (stat _)[7,9])
		688	} @$src;
		689
		690	my $dbmeta = db_get cache => "$id/meta";
		691	if ($dbmeta ne $meta) {
		692	# changed, we may need to process
		693
		694	my @data;
		695	my $md5;
		696
		697	for (0 .. $#$src) {
		698	0 <= aio_load $src->[$_], $data[$_]
		699	or Carp::croak "$src->[$_]: $!";
		700	}
		701
		702	# if processing is expensive, check
		703	# checksum first
		704	if (1) {
		705	$md5 =
		706	join "\x00",
		707	$processversion,
		708	map {
		709	cf::cede_to_tick;
		710	($src->[$_], Digest::MD5::md5_hex $data[$_])
		711	} 0.. $#$src;
		712
		713
		714	my $dbmd5 = db_get cache => "$id/md5";
		715	if ($dbmd5 eq $md5) {
		716	db_put cache => "$id/meta", $meta;
		717
		718	return db_get cache => "$id/data";
		719	}
		720	}
		721
		722	my $t1 = Time::HiRes::time;
		723	my $data = $process->(\@data);
		724	my $t2 = Time::HiRes::time;
		725
		726	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		727
		728	db_put cache => "$id/data", $data;
		729	db_put cache => "$id/md5" , $md5;
		730	db_put cache => "$id/meta", $meta;
		731
		732	return $data;
		733	}
		734
		735	db_get cache => "$id/data"
		736	}
		737
		738	=item cf::datalog type => key => value, ...
		739
		740	Log a datalog packet of the given type with the given key-value pairs.
		741
		742	=cut
		743
		744	sub datalog($@) {
		745	my ($type, %kv) = @_;
		746	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	747	}
130		748
131	=back	749	=back
132		750
133	=cut	751	=cut
134		752
135	#############################################################################	753	#############################################################################
136		754
137	=head2 EVENTS AND OBJECT ATTACHMENTS	755	=head2 ATTACHABLE OBJECTS
		756
		757	Many objects in deliantra are so-called attachable objects. That means you can
		758	attach callbacks/event handlers (a collection of which is called an "attachment")
		759	to it. All such attachable objects support the following methods.
		760
		761	In the following description, CLASS can be any of C<global>, C<object>
		762	C<player>, C<client> or C<map> (i.e. the attachable objects in
		763	Deliantra).
138		764
139	=over 4	765	=over 4
140		766
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)
154
155	=item $map->detach ($attachment)
156
157	Attach/detach a pre-registered attachment to a client.
158
159	=item $client->attach ($attachment, key => $value...)	767	=item $attachable->attach ($attachment, key => $value...)
160		768
161	=item $client->detach ($attachment)	769	=item $attachable->detach ($attachment)
162		770
163	Attach/detach a pre-registered attachment to a map.	771	Attach/detach a pre-registered attachment to a specific object and give it
		772	the specified key/value pairs as arguments.
164		773
165	=item $bool = $object->attached ($name)	774	Example, attach a minesweeper attachment to the given object, making it a
		775	10x10 minesweeper game:
166		776
167	=item $bool = $player->attached ($name)	777	$obj->attach (minesweeper => width => 10, height => 10);
168		778
169	=item $bool = $client->attached ($name)	779	=item $bool = $attachable->attached ($name)
170
171	=item $bool = $map->attached ($name)
172		780
173	Checks wether the named attachment is currently attached to the object.	781	Checks wether the named attachment is currently attached to the object.
174		782
175	=item cf::attach_global ...	783	=item cf::CLASS->attach ...
176		784
177	Attach handlers for global events.	785	=item cf::CLASS->detach ...
178		786
179	This and all following C<attach_*>-functions expect any number of the	787	Define an anonymous attachment and attach it to all objects of the given
180	following handler/hook descriptions:	788	CLASS. See the next function for an explanation of its arguments.
		789
		790	You can attach to global events by using the C<cf::global> class.
		791
		792	Example, log all player logins:
		793
		794	cf::player->attach (
		795	on_login => sub {
		796	my ($pl) = @_;
		797	...
		798	},
		799	);
		800
		801	Example, attach to the jeweler skill:
		802
		803	cf::object->attach (
		804	type => cf::SKILL,
		805	subtype => cf::SK_JEWELER,
		806	on_use_skill => sub {
		807	my ($sk, $ob, $part, $dir, $msg) = @_;
		808	...
		809	},
		810	);
		811
		812	=item cf::CLASS::attachment $name, ...
		813
		814	Register an attachment by C<$name> through which attachable objects of the
		815	given CLASS can refer to this attachment.
		816
		817	Some classes such as deliantra maps and objects can specify attachments
		818	that are attached at load/instantiate time, thus the need for a name.
		819
		820	These calls expect any number of the following handler/hook descriptions:
181		821
182	=over 4	822	=over 4
183		823
184	=item prio => $number	824	=item prio => $number
185		825
…		…
187	by another C<prio> setting). Lower priority handlers get executed	827	by another C<prio> setting). Lower priority handlers get executed
188	earlier. The default priority is C<0>, and many built-in handlers are	828	earlier. The default priority is C<0>, and many built-in handlers are
189	registered at priority C<-1000>, so lower priorities should not be used	829	registered at priority C<-1000>, so lower priorities should not be used
190	unless you know what you are doing.	830	unless you know what you are doing.
191		831
		832	=item type => $type
		833
		834	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		835	given type of objects only (the additional parameter C<subtype> can be
		836	used to further limit to the given subtype).
		837
192	=item on_I<event> => \&cb	838	=item on_I<event> => \&cb
193		839
194	Call the given code reference whenever the named event happens (event is	840	Call the given code reference whenever the named event happens (event is
195	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	841	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
196	handlers are recognised generally depends on the type of object these	842	handlers are recognised generally depends on the type of object these
…		…
205	package and register them. Only handlers for eevents supported by the	851	package and register them. Only handlers for eevents supported by the
206	object/class are recognised.	852	object/class are recognised.
207		853
208	=back	854	=back
209		855
210	=item cf::attach_to_type $object_type, $subtype, ...	856	Example, define an attachment called "sockpuppet" that calls the given
		857	event handler when a monster attacks:
211		858
212	Attach handlers for a specific object type (e.g. TRANSPORT) and	859	cf::object::attachment sockpuppet =>
213	subtype. If C<$subtype> is zero or undef, matches all objects of the given	860	on_skill_attack => sub {
214	type.	861	my ($self, $victim) = @_;
215		862	...
216	=item cf::attach_to_objects ...
217
218	Attach handlers to all objects. Do not use this except for debugging or
219	very rare events, as handlers are (obviously) called for I<all> objects in
220	the game.
221
222	=item cf::attach_to_players ...
223
224	Attach handlers to all players.
225
226	=item cf::attach_to_clients ...
227
228	Attach handlers to all players.
229
230	=item cf::attach_to_maps ...
231
232	Attach handlers to all maps.
233
234	=item cf:register_attachment $name, ...
235
236	Register an attachment by name through which objects can refer to this
237	attachment.
238
239	=item cf:register_player_attachment $name, ...
240
241	Register an attachment by name through which players can refer to this
242	attachment.
243
244	=item cf:register_map_attachment $name, ...
245
246	Register an attachment by name through which maps can refer to this
247	attachment.
248
249	=cut
250
251	# the following variables are defined in .xs and must not be re-created
252	our @CB_GLOBAL = (); # registry for all global events
253	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
254	our @CB_PLAYER = ();
255	our @CB_CLIENT = ();
256	our @CB_TYPE = (); # registry for type (cf-object class) based events
257	our @CB_MAP = ();
258
259	my %attachment;
260
261	sub _attach_cb($\%$$$) {
262	my ($registry, $undo, $event, $prio, $cb) = @_;
263
264	use sort 'stable';
265
266	$cb = [$prio, $cb];
267
268	@{$registry->[$event]} = sort
269	{ $a->[0] cmp $b->[0] }
270	@{$registry->[$event] || []}, $cb;
271
272	push @{$undo->{cb}}, [$event, $cb];
273	}
274
275	# attach handles attaching event callbacks
276	# the only thing the caller has to do is pass the correct
277	# registry (== where the callback attaches to).
278	sub _attach(\@$@) {
279	my ($registry, $klass, @arg) = @_;
280
281	my $prio = 0;
282
283	my %undo = (
284	registry => $registry,
285	cb => [],
286	);
287
288	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
289
290	while (@arg) {
291	my $type = shift @arg;
292
293	if ($type eq "prio") {
294	$prio = shift @arg;
295
296	} elsif ($type eq "package") {
297	my $pkg = shift @arg;
298
299	while (my ($name, $id) = each %cb_id) {
300	if (my $cb = $pkg->can ($name)) {
301	_attach_cb $registry, %undo, $id, $prio, $cb;
302	}
303	}	863	}
304
305	} elsif (exists $cb_id{$type}) {
306	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
307
308	} elsif (ref $type) {
309	warn "attaching objects not supported, ignoring.\n";
310
311	} else {
312	shift @arg;
313	warn "attach argument '$type' not supported, ignoring.\n";
314	}
315	}
316
317	\%undo
318	}
319
320	sub _attach_attachment {
321	my ($obj, $name, %arg) = @_;
322
323	return if exists $obj->{_attachment}{$name};
324
325	my $res;
326
327	if (my $attach = $attachment{$name}) {
328	my $registry = $obj->registry;
329
330	for (@$attach) {
331	my ($klass, @attach) = @$_;
332	$res = _attach @$registry, $klass, @attach;
333	}
334
335	$obj->{$name} = \%arg;
336	} else {
337	warn "object uses attachment '$name' that is not available, postponing.\n";
338	}
339
340	$obj->{_attachment}{$name} = undef;
341
342	$res->{attachment} = $name;
343	$res
344	}
345
346	*cf::object::attach =
347	*cf::player::attach =
348	*cf::client::attach =
349	*cf::map::attach = sub {
350	my ($obj, $name, %arg) = @_;
351
352	_attach_attachment $obj, $name, %arg;
353	};
354
355	# all those should be optimised
356	*cf::object::detach =
357	*cf::player::detach =
358	*cf::client::detach =
359	*cf::map::detach = sub {
360	my ($obj, $name) = @_;
361
362	delete $obj->{_attachment}{$name};
363	reattach ($obj);
364	};
365
366	*cf::object::attached =
367	*cf::player::attached =
368	*cf::client::attached =
369	*cf::map::attached = sub {
370	my ($obj, $name) = @_;
371
372	exists $obj->{_attachment}{$name}
373	};
374
375	sub attach_global {
376	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
377	}
378
379	sub attach_to_type {
380	my $type = shift;
381	my $subtype = shift;
382
383	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
384	}
385
386	sub attach_to_objects {
387	_attach @CB_OBJECT, KLASS_OBJECT, @_
388	}
389
390	sub attach_to_players {
391	_attach @CB_PLAYER, KLASS_PLAYER, @_
392	}
393
394	sub attach_to_clients {
395	_attach @CB_CLIENT, KLASS_CLIENT, @_
396	}
397
398	sub attach_to_maps {
399	_attach @CB_MAP, KLASS_MAP, @_
400	}
401
402	sub register_attachment {
403	my $name = shift;
404
405	$attachment{$name} = [[KLASS_OBJECT, @_]];
406	}
407
408	sub register_player_attachment {
409	my $name = shift;
410
411	$attachment{$name} = [[KLASS_PLAYER, @_]];
412	}
413
414	sub register_client_attachment {
415	my $name = shift;
416
417	$attachment{$name} = [[KLASS_CLIENT, @_]];
418	}
419
420	sub register_map_attachment {
421	my $name = shift;
422
423	$attachment{$name} = [[KLASS_MAP, @_]];
424	}
425
426	our $override;
427	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
428
429	sub override {
430	$override = 1;
431	@invoke_results = ();
432	}
433
434	sub do_invoke {
435	my $event = shift;
436	my $callbacks = shift;
437
438	@invoke_results = ();
439
440	local $override;
441
442	for (@$callbacks) {
443	eval { &{$_->[1]} };
444
445	if ($@) {
446	warn "$@";
447	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
448	override;
449	}
450
451	return 1 if $override;
452	}
453
454	0	864	}
455	}
456		865
457	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	866	=item $attachable->valid
458
459	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
460
461	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
462
463	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
464
465	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
466
467	Generate a global/object/player/map-specific event with the given arguments.
468
469	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
470	removed in future versions), and there is no public API to access override
471	results (if you must, access C<@cf::invoke_results> directly).
472
473	=back
474
475	=cut
476
477	#############################################################################
478
479	=head2 METHODS VALID FOR ALL CORE OBJECTS
480
481	=over 4
482
483	=item $object->valid, $player->valid, $client->valid, $map->valid
484		867
485	Just because you have a perl object does not mean that the corresponding	868	Just because you have a perl object does not mean that the corresponding
486	C-level object still exists. If you try to access an object that has no	869	C-level object still exists. If you try to access an object that has no
487	valid C counterpart anymore you get an exception at runtime. This method	870	valid C counterpart anymore you get an exception at runtime. This method
488	can be used to test for existence of the C object part without causing an	871	can be used to test for existence of the C object part without causing an
489	exception.	872	exception.
490		873
		874	=cut
		875
		876	# the following variables are defined in .xs and must not be re-created
		877	our @CB_GLOBAL = (); # registry for all global events
		878	our @CB_ATTACHABLE = (); # registry for all attachables
		879	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		880	our @CB_PLAYER = ();
		881	our @CB_CLIENT = ();
		882	our @CB_TYPE = (); # registry for type (cf-object class) based events
		883	our @CB_MAP = ();
		884
		885	my %attachment;
		886
		887	sub cf::attachable::thawer_merge {
		888	# simply override everything except _meta
		889	local $_[0]{_meta};
		890	%{$_[0]} = %{$_[1]};
		891	}
		892
		893	sub _attach_cb($$$$) {
		894	my ($registry, $event, $prio, $cb) = @_;
		895
		896	use sort 'stable';
		897
		898	$cb = [$prio, $cb];
		899
		900	@{$registry->[$event]} = sort
		901	{ $a->[0] cmp $b->[0] }
		902	@{$registry->[$event] || []}, $cb;
		903	}
		904
		905	# hack
		906	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		907
		908	# attach handles attaching event callbacks
		909	# the only thing the caller has to do is pass the correct
		910	# registry (== where the callback attaches to).
		911	sub _attach {
		912	my ($registry, $klass, @arg) = @_;
		913
		914	my $object_type;
		915	my $prio = 0;
		916	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		917
		918	#TODO: get rid of this hack
		919	if ($attachable_klass{$klass}) {
		920	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		921	}
		922
		923	while (@arg) {
		924	my $type = shift @arg;
		925
		926	if ($type eq "prio") {
		927	$prio = shift @arg;
		928
		929	} elsif ($type eq "type") {
		930	$object_type = shift @arg;
		931	$registry = $CB_TYPE[$object_type] ||= [];
		932
		933	} elsif ($type eq "subtype") {
		934	defined $object_type or Carp::croak "subtype specified without type";
		935	my $object_subtype = shift @arg;
		936	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		937
		938	} elsif ($type eq "package") {
		939	my $pkg = shift @arg;
		940
		941	while (my ($name, $id) = each %cb_id) {
		942	if (my $cb = $pkg->can ($name)) {
		943	_attach_cb $registry, $id, $prio, $cb;
		944	}
		945	}
		946
		947	} elsif (exists $cb_id{$type}) {
		948	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		949
		950	} elsif (ref $type) {
		951	warn "attaching objects not supported, ignoring.\n";
		952
		953	} else {
		954	shift @arg;
		955	warn "attach argument '$type' not supported, ignoring.\n";
		956	}
		957	}
		958	}
		959
		960	sub _object_attach {
		961	my ($obj, $name, %arg) = @_;
		962
		963	return if exists $obj->{_attachment}{$name};
		964
		965	if (my $attach = $attachment{$name}) {
		966	my $registry = $obj->registry;
		967
		968	for (@$attach) {
		969	my ($klass, @attach) = @$_;
		970	_attach $registry, $klass, @attach;
		971	}
		972
		973	$obj->{$name} = \%arg;
		974	} else {
		975	warn "object uses attachment '$name' which is not available, postponing.\n";
		976	}
		977
		978	$obj->{_attachment}{$name} = undef;
		979	}
		980
		981	sub cf::attachable::attach {
		982	if (ref $_[0]) {
		983	_object_attach @_;
		984	} else {
		985	_attach shift->_attach_registry, @_;
		986	}
		987	_recalc_want;
		988	};
		989
		990	# all those should be optimised
		991	sub cf::attachable::detach {
		992	my ($obj, $name) = @_;
		993
		994	if (ref $obj) {
		995	delete $obj->{_attachment}{$name};
		996	reattach ($obj);
		997	} else {
		998	Carp::croak "cannot, currently, detach class attachments";
		999	}
		1000	_recalc_want;
		1001	};
		1002
		1003	sub cf::attachable::attached {
		1004	my ($obj, $name) = @_;
		1005
		1006	exists $obj->{_attachment}{$name}
		1007	}
		1008
		1009	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1010	eval "#line " . __LINE__ . " 'cf.pm'
		1011	sub cf::\L$klass\E::_attach_registry {
		1012	(\\\@CB_$klass, KLASS_$klass)
		1013	}
		1014
		1015	sub cf::\L$klass\E::attachment {
		1016	my \$name = shift;
		1017
		1018	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1019	}
		1020	";
		1021	die if $@;
		1022	}
		1023
		1024	our $override;
		1025	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1026
		1027	sub override {
		1028	$override = 1;
		1029	@INVOKE_RESULTS = (@_);
		1030	}
		1031
		1032	sub do_invoke {
		1033	my $event = shift;
		1034	my $callbacks = shift;
		1035
		1036	@INVOKE_RESULTS = ();
		1037
		1038	local $override;
		1039
		1040	for (@$callbacks) {
		1041	eval { &{$_->[1]} };
		1042
		1043	if ($@) {
		1044	warn "$@";
		1045	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1046	override;
		1047	}
		1048
		1049	return 1 if $override;
		1050	}
		1051
		1052	0
		1053	}
		1054
		1055	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1056
		1057	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1058
		1059	Generate an object-specific event with the given arguments.
		1060
		1061	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1062	removed in future versions), and there is no public API to access override
		1063	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1064
491	=back	1065	=back
492		1066
493	=cut	1067	=cut
494
495	*cf::object::valid =
496	*cf::player::valid =
497	*cf::client::valid =
498	*cf::map::valid = \&cf::_valid;
499		1068
500	#############################################################################	1069	#############################################################################
501	# object support	1070	# object support
502		1071
503	sub instantiate {	1072	sub _object_equal($$);
		1073	sub _object_equal($$) {
		1074	my ($a, $b) = @_;
		1075
		1076	return 0 unless (ref $a) eq (ref $b);
		1077
		1078	if ("HASH" eq ref $a) {
		1079	my @ka = keys %$a;
		1080	my @kb = keys %$b;
		1081
		1082	return 0 if @ka != @kb;
		1083
		1084	for (0 .. $#ka) {
		1085	return 0 unless $ka[$_] eq $kb[$_];
		1086	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1087	}
		1088
		1089	} elsif ("ARRAY" eq ref $a) {
		1090
		1091	return 0 if @$a != @$b;
		1092
		1093	for (0 .. $#$a) {
		1094	return 0 unless _object_equal $a->[$_], $b->[$_];
		1095	}
		1096
		1097	} elsif ($a ne $b) {
		1098	return 0;
		1099	}
		1100
		1101	1
		1102	}
		1103
		1104	our $SLOW_MERGES;#d#
		1105	sub _can_merge {
504	my ($obj, $data) = @_;	1106	my ($ob1, $ob2) = @_;
505		1107
506	$data = from_json $data;	1108	++$SLOW_MERGES;#d#
507		1109
508	for (@$data) {	1110	# we do the slow way here
509	my ($name, $args) = @$_;	1111	return _object_equal $ob1, $ob2
510
511	$obj->attach ($name, %{$args || {} });
512	}
513	}	1112	}
514		1113
515	# basically do the same as instantiate, without calling instantiate
516	sub reattach {	1114	sub reattach {
		1115	# basically do the same as instantiate, without calling instantiate
517	my ($obj) = @_;	1116	my ($obj) = @_;
		1117
		1118	# no longer needed after getting rid of delete_package?
		1119	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1120
518	my $registry = $obj->registry;	1121	my $registry = $obj->registry;
519		1122
520	@$registry = ();	1123	@$registry = ();
521		1124
522	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1125	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
523		1126
524	for my $name (keys %{ $obj->{_attachment} || {} }) {	1127	for my $name (keys %{ $obj->{_attachment} || {} }) {
525	if (my $attach = $attachment{$name}) {	1128	if (my $attach = $attachment{$name}) {
526	for (@$attach) {	1129	for (@$attach) {
527	my ($klass, @attach) = @$_;	1130	my ($klass, @attach) = @$_;
528	_attach @$registry, $klass, @attach;	1131	_attach $registry, $klass, @attach;
529	}	1132	}
530	} else {	1133	} else {
531	warn "object uses attachment '$name' that is not available, postponing.\n";	1134	warn "object uses attachment '$name' that is not available, postponing.\n";
532	}	1135	}
533	}	1136	}
534	}	1137	}
535		1138
536	sub object_freezer_save {	1139	cf::attachable->attach (
537	my ($filename, $rdata, $objs) = @_;
538
539	if (length $$rdata) {
540	warn sprintf "saving %s (%d,%d)\n",
541	$filename, length $$rdata, scalar @$objs;
542
543	if (open my $fh, ">:raw", "$filename~") {
544	chmod SAVE_MODE, $fh;
545	syswrite $fh, $$rdata;
546	close $fh;
547
548	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
549	chmod SAVE_MODE, $fh;
550	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
551	close $fh;
552	rename "$filename.pst~", "$filename.pst";
553	} else {
554	unlink "$filename.pst";
555	}
556
557	rename "$filename~", $filename;
558	} else {
559	warn "FATAL: $filename~: $!\n";
560	}
561	} else {
562	unlink $filename;
563	unlink "$filename.pst";
564	}
565	}
566
567	sub object_freezer_as_string {
568	my ($rdata, $objs) = @_;
569
570	use Data::Dumper;
571
572	$$rdata . Dumper $objs
573	}
574
575	sub object_thawer_load {
576	my ($filename) = @_;
577
578	local $/;
579
580	my $av;
581
582	#TODO: use sysread etc.
583	if (open my $data, "<:raw:perlio", $filename) {
584	$data = <$data>;
585	if (open my $pst, "<:raw:perlio", "$filename.pst") {
586	$av = eval { (Storable::thaw <$pst>)->{objs} };
587	}
588	return ($data, $av);
589	}
590
591	()
592	}
593
594	attach_to_objects
595	prio => -1000000,	1140	prio => -1000000,
		1141	on_instantiate => sub {
		1142	my ($obj, $data) = @_;
		1143
		1144	$data = decode_json $data;
		1145
		1146	for (@$data) {
		1147	my ($name, $args) = @$_;
		1148
		1149	$obj->attach ($name, %{$args || {} });
		1150	}
		1151	},
		1152	on_reattach => \&reattach,
596	on_clone => sub {	1153	on_clone => sub {
597	my ($src, $dst) = @_;	1154	my ($src, $dst) = @_;
598		1155
599	@{$dst->registry} = @{$src->registry};	1156	@{$dst->registry} = @{$src->registry};
600		1157
601	%$dst = %$src;	1158	%$dst = %$src;
602		1159
603	%{$dst->{_attachment}} = %{$src->{_attachment}}	1160	%{$dst->{_attachment}} = %{$src->{_attachment}}
604	if exists $src->{_attachment};	1161	if exists $src->{_attachment};
605	},	1162	},
606	;	1163	);
		1164
		1165	sub object_freezer_save {
		1166	my ($filename, $rdata, $objs) = @_;
		1167
		1168	sync_job {
		1169	if (length $$rdata) {
		1170	utf8::decode (my $decname = $filename);
		1171	warn sprintf "saving %s (%d,%d)\n",
		1172	$decname, length $$rdata, scalar @$objs;
		1173
		1174	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1175	aio_chmod $fh, SAVE_MODE;
		1176	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1177	if ($cf::USE_FSYNC) {
		1178	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1179	aio_fsync $fh;
		1180	}
		1181	aio_close $fh;
		1182
		1183	if (@$objs) {
		1184	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1185	aio_chmod $fh, SAVE_MODE;
		1186	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1187	aio_write $fh, 0, (length $data), $data, 0;
		1188	if ($cf::USE_FSYNC) {
		1189	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1190	aio_fsync $fh;
		1191	}
		1192	aio_close $fh;
		1193	aio_rename "$filename.pst~", "$filename.pst";
		1194	}
		1195	} else {
		1196	aio_unlink "$filename.pst";
		1197	}
		1198
		1199	aio_rename "$filename~", $filename;
		1200
		1201	$filename =~ s%/[^/]+$%%;
		1202	aio_pathsync $filename if $cf::USE_FSYNC;
		1203	} else {
		1204	warn "unable to save objects: $filename~: $!\n";
		1205	}
		1206	} else {
		1207	aio_unlink $filename;
		1208	aio_unlink "$filename.pst";
		1209	}
		1210	};
		1211	}
		1212
		1213	sub object_freezer_as_string {
		1214	my ($rdata, $objs) = @_;
		1215
		1216	use Data::Dumper;
		1217
		1218	$$rdata . Dumper $objs
		1219	}
		1220
		1221	sub object_thawer_load {
		1222	my ($filename) = @_;
		1223
		1224	my ($data, $av);
		1225
		1226	(aio_load $filename, $data) >= 0
		1227	or return;
		1228
		1229	unless (aio_stat "$filename.pst") {
		1230	(aio_load "$filename.pst", $av) >= 0
		1231	or return;
		1232
		1233	my $st = eval { Coro::Storable::thaw $av };
		1234	$av = $st->{objs};
		1235	}
		1236
		1237	utf8::decode (my $decname = $filename);
		1238	warn sprintf "loading %s (%d,%d)\n",
		1239	$decname, length $data, scalar @{$av || []};
		1240
		1241	($data, $av)
		1242	}
		1243
		1244	=head2 COMMAND CALLBACKS
		1245
		1246	=over 4
		1247
		1248	=cut
607		1249
608	#############################################################################	1250	#############################################################################
609	# command handling &c	1251	# command handling &c
610		1252
611	=item cf::register_command $name => \&callback($ob,$args);	1253	=item cf::register_command $name => \&callback($ob,$args);
…		…
624	push @{ $COMMAND{$name} }, [$caller, $cb];	1266	push @{ $COMMAND{$name} }, [$caller, $cb];
625	}	1267	}
626		1268
627	=item cf::register_extcmd $name => \&callback($pl,$packet);	1269	=item cf::register_extcmd $name => \&callback($pl,$packet);
628		1270
629	Register a callbackf ro execution when the client sends an extcmd packet.	1271	Register a callback for execution when the client sends an (synchronous)
		1272	extcmd packet. Ext commands will be processed in the order they are
		1273	received by the server, like other user commands. The first argument is
		1274	the logged-in player. Ext commands can only be processed after a player
		1275	has logged in successfully.
630		1276
631	If the callback returns something, it is sent back as if reply was being	1277	If the callback returns something, it is sent back as if reply was being
632	called.	1278	called.
633		1279
		1280	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1281
		1282	Register a callback for execution when the client sends an (asynchronous)
		1283	exticmd packet. Exti commands are processed by the server as soon as they
		1284	are received, i.e. out of order w.r.t. other commands. The first argument
		1285	is a client socket. Exti commands can be received anytime, even before
		1286	log-in.
		1287
		1288	If the callback returns something, it is sent back as if reply was being
		1289	called.
		1290
634	=cut	1291	=cut
635		1292
636	sub register_extcmd {	1293	sub register_extcmd {
637	my ($name, $cb) = @_;	1294	my ($name, $cb) = @_;
638		1295
639	my $caller = caller;
640	#warn "registering extcmd '$name' to '$caller'";
641
642	$EXTCMD{$name} = [$cb, $caller];	1296	$EXTCMD{$name} = $cb;
643	}	1297	}
644		1298
645	attach_to_players	1299	sub register_exticmd {
		1300	my ($name, $cb) = @_;
		1301
		1302	$EXTICMD{$name} = $cb;
		1303	}
		1304
		1305	use File::Glob ();
		1306
		1307	cf::player->attach (
646	on_command => sub {	1308	on_command => sub {
647	my ($pl, $name, $params) = @_;	1309	my ($pl, $name, $params) = @_;
648		1310
649	my $cb = $COMMAND{$name}	1311	my $cb = $COMMAND{$name}
650	or return;	1312	or return;
…		…
656	cf::override;	1318	cf::override;
657	},	1319	},
658	on_extcmd => sub {	1320	on_extcmd => sub {
659	my ($pl, $buf) = @_;	1321	my ($pl, $buf) = @_;
660		1322
661	my $msg = eval { from_json $buf };	1323	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
662		1324
663	if (ref $msg) {	1325	if (ref $msg) {
		1326	my ($type, $reply, @payload) =
		1327	"ARRAY" eq ref $msg
		1328	? @$msg
		1329	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1330
		1331	my @reply;
		1332
664	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1333	if (my $cb = $EXTCMD{$type}) {
665	if (my %reply = $cb->[0]->($pl, $msg)) {	1334	@reply = $cb->($pl, @payload);
666	$pl->ext_reply ($msg->{msgid}, %reply);	1335	}
		1336
		1337	$pl->ext_reply ($reply, @reply)
		1338	if $reply;
		1339
		1340	} else {
		1341	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1342	}
		1343
		1344	cf::override;
		1345	},
		1346	);
		1347
		1348	# "readahead" all extensions
		1349	sub cache_extensions {
		1350	my $grp = IO::AIO::aio_group;
		1351
		1352	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1353	for (grep /\.ext$/, @{$_[0]}) {
		1354	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1355	}
		1356	};
		1357
		1358	$grp
		1359	}
		1360
		1361	sub load_extensions {
		1362	cf::sync_job {
		1363	my %todo;
		1364
		1365	for my $path (<$LIBDIR/*.ext>) {
		1366	next unless -r $path;
		1367
		1368	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1369	my $base = $1;
		1370	my $pkg = $1;
		1371	$pkg =~ s/[^[:word:]]/_/g;
		1372	$pkg = "ext::$pkg";
		1373
		1374	open my $fh, "<:utf8", $path
		1375	or die "$path: $!";
		1376
		1377	my $source = do { local $/; <$fh> };
		1378
		1379	my %ext = (
		1380	path => $path,
		1381	base => $base,
		1382	pkg => $pkg,
		1383	);
		1384
		1385	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1386	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1387
		1388	$ext{source} =
		1389	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1390	. "#line 1 \"$path\"\n{\n"
		1391	. $source
		1392	. "\n};\n1";
		1393
		1394	$todo{$base} = \%ext;
		1395	}
		1396
		1397	my %done;
		1398	while (%todo) {
		1399	my $progress;
		1400
		1401	while (my ($k, $v) = each %todo) {
		1402	for (split /,\s*/, $v->{meta}{depends}) {
		1403	goto skip
		1404	unless exists $done{$_};
		1405	}
		1406
		1407	warn "... loading '$k' into '$v->{pkg}'\n";
		1408
		1409	unless (eval $v->{source}) {
		1410	my $msg = $@ ? "$v->{path}: $@\n"
		1411	: "$v->{base}: extension inactive.\n";
		1412
		1413	if (exists $v->{meta}{mandatory}) {
		1414	warn $msg;
		1415	cf::cleanup "mandatory extension failed to load, exiting.";
		1416	}
		1417
		1418	warn $msg;
		1419	}
		1420
		1421	$done{$k} = delete $todo{$k};
		1422	push @EXTS, $v->{pkg};
		1423	$progress = 1;
		1424	}
		1425
		1426	skip:
		1427	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1428	unless $progress;
		1429	}
		1430	};
		1431	}
		1432
		1433	#############################################################################
		1434
		1435	=back
		1436
		1437	=head2 CORE EXTENSIONS
		1438
		1439	Functions and methods that extend core deliantra objects.
		1440
		1441	=cut
		1442
		1443	package cf::player;
		1444
		1445	use Coro::AIO;
		1446
		1447	=head3 cf::player
		1448
		1449	=over 4
		1450
		1451	=item cf::player::num_playing
		1452
		1453	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1454
		1455	=cut
		1456
		1457	sub num_playing {
		1458	scalar grep
		1459	$_->ob->map
		1460	&& !$_->hidden
		1461	&& !$_->ob->flag (cf::FLAG_WIZ),
		1462	cf::player::list
		1463	}
		1464
		1465	=item cf::player::find $login
		1466
		1467	Returns the given player object, loading it if necessary (might block).
		1468
		1469	=cut
		1470
		1471	sub playerdir($) {
		1472	"$PLAYERDIR/"
		1473	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1474	}
		1475
		1476	sub path($) {
		1477	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1478
		1479	(playerdir $login) . "/playerdata"
		1480	}
		1481
		1482	sub find_active($) {
		1483	$cf::PLAYER{$_[0]}
		1484	and $cf::PLAYER{$_[0]}->active
		1485	and $cf::PLAYER{$_[0]}
		1486	}
		1487
		1488	sub exists($) {
		1489	my ($login) = @_;
		1490
		1491	$cf::PLAYER{$login}
		1492	or !aio_stat path $login
		1493	}
		1494
		1495	sub find($) {
		1496	return $cf::PLAYER{$_[0]} || do {
		1497	my $login = $_[0];
		1498
		1499	my $guard = cf::lock_acquire "user_find:$login";
		1500
		1501	$cf::PLAYER{$_[0]} || do {
		1502	# rename old playerfiles to new ones
		1503	#TODO: remove when no longer required
		1504	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1505	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1506	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1507	aio_unlink +(playerdir $login) . "/$login.pl";
		1508
		1509	my $f = new_from_file cf::object::thawer path $login
		1510	or return;
		1511
		1512	my $pl = cf::player::load_pl $f
		1513	or return;
		1514
		1515	local $cf::PLAYER_LOADING{$login} = $pl;
		1516	$f->resolve_delayed_derefs;
		1517	$cf::PLAYER{$login} = $pl
		1518	}
		1519	}
		1520	}
		1521
		1522	sub save($) {
		1523	my ($pl) = @_;
		1524
		1525	return if $pl->{deny_save};
		1526
		1527	my $path = path $pl;
		1528	my $guard = cf::lock_acquire "user_save:$path";
		1529
		1530	return if $pl->{deny_save};
		1531
		1532	aio_mkdir playerdir $pl, 0770;
		1533	$pl->{last_save} = $cf::RUNTIME;
		1534
		1535	cf::get_slot 0.01;
		1536
		1537	$pl->save_pl ($path);
		1538	cf::cede_to_tick;
		1539	}
		1540
		1541	sub new($) {
		1542	my ($login) = @_;
		1543
		1544	my $self = create;
		1545
		1546	$self->ob->name ($login);
		1547	$self->{deny_save} = 1;
		1548
		1549	$cf::PLAYER{$login} = $self;
		1550
		1551	$self
		1552	}
		1553
		1554	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1555
		1556	=cut
		1557
		1558	sub send_msg {
		1559	my $ns = shift->ns
		1560	or return;
		1561	$ns->send_msg (@_);
		1562	}
		1563
		1564	=item $pl->quit_character
		1565
		1566	Nukes the player without looking back. If logged in, the connection will
		1567	be destroyed. May block for a long time.
		1568
		1569	=cut
		1570
		1571	sub quit_character {
		1572	my ($pl) = @_;
		1573
		1574	my $name = $pl->ob->name;
		1575
		1576	$pl->{deny_save} = 1;
		1577	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1578
		1579	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1580	$pl->deactivate;
		1581	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1582	$pl->ob->check_score;
		1583	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1584	$pl->ns->destroy if $pl->ns;
		1585
		1586	my $path = playerdir $pl;
		1587	my $temp = "$path~$cf::RUNTIME~deleting~";
		1588	aio_rename $path, $temp;
		1589	delete $cf::PLAYER{$pl->ob->name};
		1590	$pl->destroy;
		1591
		1592	my $prefix = qr<^~\Q$name\E/>;
		1593
		1594	# nuke player maps
		1595	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1596
		1597	IO::AIO::aio_rmtree $temp;
		1598	}
		1599
		1600	=item $pl->kick
		1601
		1602	Kicks a player out of the game. This destroys the connection.
		1603
		1604	=cut
		1605
		1606	sub kick {
		1607	my ($pl, $kicker) = @_;
		1608
		1609	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1610	$pl->killer ("kicked");
		1611	$pl->ns->destroy;
		1612	}
		1613
		1614	=item cf::player::list_logins
		1615
		1616	Returns am arrayref of all valid playernames in the system, can take a
		1617	while and may block, so not sync_job-capable, ever.
		1618
		1619	=cut
		1620
		1621	sub list_logins {
		1622	my $dirs = aio_readdir $PLAYERDIR
		1623	or return [];
		1624
		1625	my @logins;
		1626
		1627	for my $login (@$dirs) {
		1628	my $path = path $login;
		1629
		1630	# a .pst is a dead give-away for a valid player
		1631	# if no pst file found, open and chekc for blocked users
		1632	if (aio_stat "$path.pst") {
		1633	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1634	aio_read $fh, 0, 512, my $buf, 0 or next;
		1635	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1636	}
		1637
		1638	utf8::decode $login;
		1639	push @logins, $login;
		1640	}
		1641
		1642	\@logins
		1643	}
		1644
		1645	=item $player->maps
		1646
		1647	Returns an arrayref of map paths that are private for this
		1648	player. May block.
		1649
		1650	=cut
		1651
		1652	sub maps($) {
		1653	my ($pl) = @_;
		1654
		1655	$pl = ref $pl ? $pl->ob->name : $pl;
		1656
		1657	my $files = aio_readdir playerdir $pl
		1658	or return;
		1659
		1660	my @paths;
		1661
		1662	for (@$files) {
		1663	utf8::decode $_;
		1664	next if /\.(?:pl|pst)$/;
		1665	next unless /^$PATH_SEP/o;
		1666
		1667	push @paths, cf::map::normalise "~$pl/$_";
		1668	}
		1669
		1670	\@paths
		1671	}
		1672
		1673	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1674
		1675	Expand deliantra pod fragments into protocol xml.
		1676
		1677	=item $player->ext_reply ($msgid, @msg)
		1678
		1679	Sends an ext reply to the player.
		1680
		1681	=cut
		1682
		1683	sub ext_reply($$@) {
		1684	my ($self, $id, @msg) = @_;
		1685
		1686	$self->ns->ext_reply ($id, @msg)
		1687	}
		1688
		1689	=item $player->ext_msg ($type, @msg)
		1690
		1691	Sends an ext event to the client.
		1692
		1693	=cut
		1694
		1695	sub ext_msg($$@) {
		1696	my ($self, $type, @msg) = @_;
		1697
		1698	$self->ns->ext_msg ($type, @msg);
		1699	}
		1700
		1701	=head3 cf::region
		1702
		1703	=over 4
		1704
		1705	=cut
		1706
		1707	package cf::region;
		1708
		1709	=item cf::region::find_by_path $path
		1710
		1711	Tries to decuce the likely region for a map knowing only its path.
		1712
		1713	=cut
		1714
		1715	sub find_by_path($) {
		1716	my ($path) = @_;
		1717
		1718	my ($match, $specificity);
		1719
		1720	for my $region (list) {
		1721	if ($region->{match} && $path =~ $region->{match}) {
		1722	($match, $specificity) = ($region, $region->specificity)
		1723	if $region->specificity > $specificity;
		1724	}
		1725	}
		1726
		1727	$match
		1728	}
		1729
		1730	=back
		1731
		1732	=head3 cf::map
		1733
		1734	=over 4
		1735
		1736	=cut
		1737
		1738	package cf::map;
		1739
		1740	use Fcntl;
		1741	use Coro::AIO;
		1742
		1743	use overload
		1744	'""' => \&as_string,
		1745	fallback => 1;
		1746
		1747	our $MAX_RESET = 3600;
		1748	our $DEFAULT_RESET = 3000;
		1749
		1750	sub generate_random_map {
		1751	my ($self, $rmp) = @_;
		1752
		1753	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1754
		1755	# mit "rum" bekleckern, nicht
		1756	$self->_create_random_map (
		1757	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1758	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1759	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1760	$rmp->{exit_on_final_map},
		1761	$rmp->{xsize}, $rmp->{ysize},
		1762	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1763	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1764	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1765	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1766	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1767	(cf::region::find $rmp->{region}), $rmp->{custom}
		1768	)
		1769	}
		1770
		1771	=item cf::map->register ($regex, $prio)
		1772
		1773	Register a handler for the map path matching the given regex at the
		1774	givne priority (higher is better, built-in handlers have priority 0, the
		1775	default).
		1776
		1777	=cut
		1778
		1779	sub register {
		1780	my (undef, $regex, $prio) = @_;
		1781	my $pkg = caller;
		1782
		1783	no strict;
		1784	push @{"$pkg\::ISA"}, __PACKAGE__;
		1785
		1786	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1787	}
		1788
		1789	# also paths starting with '/'
		1790	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1791
		1792	sub thawer_merge {
		1793	my ($self, $merge) = @_;
		1794
		1795	# we have to keep some variables in memory intact
		1796	local $self->{path};
		1797	local $self->{load_path};
		1798
		1799	$self->SUPER::thawer_merge ($merge);
		1800	}
		1801
		1802	sub normalise {
		1803	my ($path, $base) = @_;
		1804
		1805	$path = "$path"; # make sure its a string
		1806
		1807	$path =~ s/\.map$//;
		1808
		1809	# map plan:
		1810	#
		1811	# /! non-realised random map exit (special hack!)
		1812	# {... are special paths that are not being touched
		1813	# ?xxx/... are special absolute paths
		1814	# ?random/... random maps
		1815	# /... normal maps
		1816	# ~user/... per-player map of a specific user
		1817
		1818	$path =~ s/$PATH_SEP/\//go;
		1819
		1820	# treat it as relative path if it starts with
		1821	# something that looks reasonable
		1822	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1823	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1824
		1825	$base =~ s{[^/]+/?$}{};
		1826	$path = "$base/$path";
		1827	}
		1828
		1829	for ($path) {
		1830	redo if s{//}{/};
		1831	redo if s{/\.?/}{/};
		1832	redo if s{/[^/]+/\.\./}{/};
		1833	}
		1834
		1835	$path
		1836	}
		1837
		1838	sub new_from_path {
		1839	my (undef, $path, $base) = @_;
		1840
		1841	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1842
		1843	$path = normalise $path, $base;
		1844
		1845	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1846	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1847	my $self = bless cf::map::new, $pkg;
		1848	$self->{path} = $path; $self->path ($path);
		1849	$self->init; # pass $1 etc.
		1850	return $self;
		1851	}
		1852	}
		1853
		1854	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1855	()
		1856	}
		1857
		1858	sub init {
		1859	my ($self) = @_;
		1860
		1861	$self
		1862	}
		1863
		1864	sub as_string {
		1865	my ($self) = @_;
		1866
		1867	"$self->{path}"
		1868	}
		1869
		1870	# the displayed name, this is a one way mapping
		1871	sub visible_name {
		1872	&as_string
		1873	}
		1874
		1875	# the original (read-only) location
		1876	sub load_path {
		1877	my ($self) = @_;
		1878
		1879	"$MAPDIR/$self->{path}.map"
		1880	}
		1881
		1882	# the temporary/swap location
		1883	sub save_path {
		1884	my ($self) = @_;
		1885
		1886	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1887	"$TMPDIR/$path.map"
		1888	}
		1889
		1890	# the unique path, undef == no special unique path
		1891	sub uniq_path {
		1892	my ($self) = @_;
		1893
		1894	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1895	"$UNIQUEDIR/$path"
		1896	}
		1897
		1898	sub decay_objects {
		1899	my ($self) = @_;
		1900
		1901	return if $self->{deny_reset};
		1902
		1903	$self->do_decay_objects;
		1904	}
		1905
		1906	sub unlink_save {
		1907	my ($self) = @_;
		1908
		1909	utf8::encode (my $save = $self->save_path);
		1910	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1911	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1912	}
		1913
		1914	sub load_header_from($) {
		1915	my ($self, $path) = @_;
		1916
		1917	utf8::encode $path;
		1918	my $f = new_from_file cf::object::thawer $path
		1919	or return;
		1920
		1921	$self->_load_header ($f)
		1922	or return;
		1923
		1924	local $MAP_LOADING{$self->{path}} = $self;
		1925	$f->resolve_delayed_derefs;
		1926
		1927	$self->{load_path} = $path;
		1928
		1929	1
		1930	}
		1931
		1932	sub load_header_orig {
		1933	my ($self) = @_;
		1934
		1935	$self->load_header_from ($self->load_path)
		1936	}
		1937
		1938	sub load_header_temp {
		1939	my ($self) = @_;
		1940
		1941	$self->load_header_from ($self->save_path)
		1942	}
		1943
		1944	sub prepare_temp {
		1945	my ($self) = @_;
		1946
		1947	$self->last_access ((delete $self->{last_access})
		1948	|| $cf::RUNTIME); #d#
		1949	# safety
		1950	$self->{instantiate_time} = $cf::RUNTIME
		1951	if $self->{instantiate_time} > $cf::RUNTIME;
		1952	}
		1953
		1954	sub prepare_orig {
		1955	my ($self) = @_;
		1956
		1957	$self->{load_original} = 1;
		1958	$self->{instantiate_time} = $cf::RUNTIME;
		1959	$self->last_access ($cf::RUNTIME);
		1960	$self->instantiate;
		1961	}
		1962
		1963	sub load_header {
		1964	my ($self) = @_;
		1965
		1966	if ($self->load_header_temp) {
		1967	$self->prepare_temp;
		1968	} else {
		1969	$self->load_header_orig
		1970	or return;
		1971	$self->prepare_orig;
		1972	}
		1973
		1974	$self->{deny_reset} = 1
		1975	if $self->no_reset;
		1976
		1977	$self->default_region (cf::region::find_by_path $self->{path})
		1978	unless $self->default_region;
		1979
		1980	1
		1981	}
		1982
		1983	sub find;
		1984	sub find {
		1985	my ($path, $origin) = @_;
		1986
		1987	$path = normalise $path, $origin && $origin->path;
		1988
		1989	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		1990	my $guard2 = cf::lock_acquire "map_find:$path";
		1991
		1992	$cf::MAP{$path} || do {
		1993	my $map = new_from_path cf::map $path
		1994	or return;
		1995
		1996	$map->{last_save} = $cf::RUNTIME;
		1997
		1998	$map->load_header
		1999	or return;
		2000
		2001	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2002	# doing this can freeze the server in a sync job, obviously
		2003	#$cf::WAIT_FOR_TICK->wait;
		2004	undef $guard2;
		2005	undef $guard1;
		2006	$map->reset;
		2007	return find $path;
		2008	}
		2009
		2010	$cf::MAP{$path} = $map
		2011	}
		2012	}
		2013
		2014	sub pre_load { }
		2015	sub post_load { }
		2016
		2017	sub load {
		2018	my ($self) = @_;
		2019
		2020	local $self->{deny_reset} = 1; # loading can take a long time
		2021
		2022	my $path = $self->{path};
		2023
		2024	{
		2025	my $guard = cf::lock_acquire "map_data:$path";
		2026
		2027	return unless $self->valid;
		2028	return unless $self->in_memory == cf::MAP_SWAPPED;
		2029
		2030	$self->in_memory (cf::MAP_LOADING);
		2031
		2032	$self->alloc;
		2033
		2034	$self->pre_load;
		2035	cf::cede_to_tick;
		2036
		2037	my $f = new_from_file cf::object::thawer $self->{load_path};
		2038	$f->skip_block;
		2039	$self->_load_objects ($f)
		2040	or return;
		2041
		2042	$self->post_load_original
		2043	if delete $self->{load_original};
		2044
		2045	if (my $uniq = $self->uniq_path) {
		2046	utf8::encode $uniq;
		2047	unless (aio_stat $uniq) {
		2048	if (my $f = new_from_file cf::object::thawer $uniq) {
		2049	$self->clear_unique_items;
		2050	$self->_load_objects ($f);
		2051	$f->resolve_delayed_derefs;
667	}	2052	}
668	}	2053	}
669	} else {
670	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
671	}	2054	}
672		2055
673	cf::override;	2056	$f->resolve_delayed_derefs;
		2057
		2058	cf::cede_to_tick;
		2059	# now do the right thing for maps
		2060	$self->link_multipart_objects;
		2061	$self->difficulty ($self->estimate_difficulty)
		2062	unless $self->difficulty;
		2063	cf::cede_to_tick;
		2064
		2065	unless ($self->{deny_activate}) {
		2066	$self->decay_objects;
		2067	$self->fix_auto_apply;
		2068	$self->update_buttons;
		2069	cf::cede_to_tick;
		2070	$self->activate;
		2071	}
		2072
		2073	$self->{last_save} = $cf::RUNTIME;
		2074	$self->last_access ($cf::RUNTIME);
		2075
		2076	$self->in_memory (cf::MAP_ACTIVE);
674	},	2077	}
675	;
676		2078
677	sub register {	2079	$self->post_load;
		2080	}
		2081
		2082	sub customise_for {
678	my ($base, $pkg) = @_;	2083	my ($self, $ob) = @_;
679		2084
680	#TODO	2085	return find "~" . $ob->name . "/" . $self->{path}
681	}	2086	if $self->per_player;
682		2087
683	sub load_extension {	2088	# return find "?party/" . $ob->name . "/" . $self->{path}
684	my ($path) = @_;	2089	# if $self->per_party;
685		2090
686	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	2091	$self
687	my $base = $1;
688	my $pkg = $1;
689	$pkg =~ s/[^[:word:]]/_/g;
690	$pkg = "ext::$pkg";
691
692	warn "loading '$path' into '$pkg'\n";
693
694	open my $fh, "<:utf8", $path
695	or die "$path: $!";
696
697	my $source =
698	"package $pkg; use strict; use utf8;\n"
699	. "#line 1 \"$path\"\n{\n"
700	. (do { local $/; <$fh> })
701	. "\n};\n1";
702
703	eval $source
704	or die $@ ? "$path: $@\n"
705	: "extension disabled.\n";
706
707	push @exts, $pkg;
708	$ext_pkg{$base} = $pkg;
709
710	# no strict 'refs';
711	# @{"$pkg\::ISA"} = ext::;
712
713	register $base, $pkg;
714	}	2092	}
715		2093
716	sub unload_extension {	2094	# find and load all maps in the 3x3 area around a map
717	my ($pkg) = @_;	2095	sub load_neighbours {
718
719	warn "removing extension $pkg\n";
720
721	# remove hooks
722	#TODO
723	# for my $idx (0 .. $#PLUGIN_EVENT) {
724	# delete $hook[$idx]{$pkg};
725	# }
726
727	# remove commands
728	for my $name (keys %COMMAND) {
729	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
730
731	if (@cb) {
732	$COMMAND{$name} = \@cb;
733	} else {
734	delete $COMMAND{$name};
735	}
736	}
737
738	# remove extcmds
739	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
740	delete $EXTCMD{$name};
741	}
742
743	if (my $cb = $pkg->can ("unload")) {
744	eval {
745	$cb->($pkg);
746	1
747	} or warn "$pkg unloaded, but with errors: $@";
748	}
749
750	Symbol::delete_package $pkg;
751	}
752
753	sub load_extensions {
754	for my $ext (<$LIBDIR/*.ext>) {
755	next unless -r $ext;
756	eval {
757	load_extension $ext;
758	1
759	} or warn "$ext not loaded: $@";
760	}
761	}
762
763	#############################################################################
764	# load/save/clean perl data associated with a map
765
766	*cf::mapsupport::on_clean = sub {
767	my ($map) = @_;	2096	my ($map) = @_;
768		2097
769	my $path = $map->tmpname;	2098	my @neigh; # diagonal neighbours
770	defined $path or return;
771		2099
772	unlink "$path.pst";	2100	for (0 .. 3) {
773	};	2101	my $neigh = $map->tile_path ($_)
		2102	or next;
		2103	$neigh = find $neigh, $map
		2104	or next;
		2105	$neigh->load;
774		2106
775	attach_to_maps prio => -10000, package => cf::mapsupport::;	2107	push @neigh,
		2108	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2109	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2110	}
776		2111
777	#############################################################################	2112	for (grep defined $_->[0], @neigh) {
778	# load/save perl data associated with player->ob objects	2113	my ($path, $origin) = @$_;
779		2114	my $neigh = find $path, $origin
780	sub all_objects(@) {	2115	or next;
781	@_, map all_objects ($_->inv), @_	2116	$neigh->load;
		2117	}
782	}	2118	}
783		2119
784	# TODO: compatibility cruft, remove when no longer needed	2120	sub find_sync {
785	attach_to_players	2121	my ($path, $origin) = @_;
786	on_load => sub {
787	my ($pl, $path) = @_;
788		2122
789	for my $o (all_objects $pl->ob) {	2123	cf::sync_job { find $path, $origin }
790	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2124	}
791	$o->set_ob_key_value ("_perl_data");
792		2125
793	%$o = %{ Storable::thaw pack "H*", $value };	2126	sub do_load_sync {
		2127	my ($map) = @_;
		2128
		2129	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2130	if $Coro::current == $Coro::main;
		2131
		2132	cf::sync_job { $map->load };
		2133	}
		2134
		2135	our %MAP_PREFETCH;
		2136	our $MAP_PREFETCHER = undef;
		2137
		2138	sub find_async {
		2139	my ($path, $origin, $load) = @_;
		2140
		2141	$path = normalise $path, $origin && $origin->{path};
		2142
		2143	if (my $map = $cf::MAP{$path}) {
		2144	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2145	}
		2146
		2147	$MAP_PREFETCH{$path} |= $load;
		2148
		2149	$MAP_PREFETCHER ||= cf::async {
		2150	$Coro::current->{desc} = "map prefetcher";
		2151
		2152	while (%MAP_PREFETCH) {
		2153	while (my ($k, $v) = each %MAP_PREFETCH) {
		2154	if (my $map = find $k) {
		2155	$map->load if $v;
		2156	}
		2157
		2158	delete $MAP_PREFETCH{$k};
794	}	2159	}
795	}	2160	}
		2161	undef $MAP_PREFETCHER;
		2162	};
		2163	$MAP_PREFETCHER->prio (6);
		2164
		2165	()
		2166	}
		2167
		2168	sub save {
		2169	my ($self) = @_;
		2170
		2171	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2172
		2173	$self->{last_save} = $cf::RUNTIME;
		2174
		2175	return unless $self->dirty;
		2176
		2177	my $save = $self->save_path; utf8::encode $save;
		2178	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2179
		2180	$self->{load_path} = $save;
		2181
		2182	return if $self->{deny_save};
		2183
		2184	local $self->{last_access} = $self->last_access;#d#
		2185
		2186	cf::async {
		2187	$Coro::current->{desc} = "map player save";
		2188	$_->contr->save for $self->players;
		2189	};
		2190
		2191	cf::get_slot 0.02;
		2192
		2193	if ($uniq) {
		2194	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2195	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2196	} else {
		2197	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
796	},	2198	}
797	;	2199	}
798		2200
799	#############################################################################	2201	sub swap_out {
		2202	my ($self) = @_;
800		2203
801	=head2 CORE EXTENSIONS	2204	# save first because save cedes
		2205	$self->save;
802		2206
803	Functions and methods that extend core crossfire objects.	2207	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2208
		2209	return if $self->players;
		2210	return if $self->in_memory != cf::MAP_ACTIVE;
		2211	return if $self->{deny_save};
		2212
		2213	$self->in_memory (cf::MAP_SWAPPED);
		2214
		2215	$self->deactivate;
		2216	$_->clear_links_to ($self) for values %cf::MAP;
		2217	$self->clear;
		2218	}
		2219
		2220	sub reset_at {
		2221	my ($self) = @_;
		2222
		2223	# TODO: safety, remove and allow resettable per-player maps
		2224	return 1e99 if $self->{deny_reset};
		2225
		2226	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2227	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2228
		2229	$time + $to
		2230	}
		2231
		2232	sub should_reset {
		2233	my ($self) = @_;
		2234
		2235	$self->reset_at <= $cf::RUNTIME
		2236	}
		2237
		2238	sub reset {
		2239	my ($self) = @_;
		2240
		2241	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2242
		2243	return if $self->players;
		2244
		2245	warn "resetting map ", $self->path, "\n";
		2246
		2247	$self->in_memory (cf::MAP_SWAPPED);
		2248
		2249	# need to save uniques path
		2250	unless ($self->{deny_save}) {
		2251	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2252
		2253	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2254	if $uniq;
		2255	}
		2256
		2257	delete $cf::MAP{$self->path};
		2258
		2259	$self->deactivate;
		2260	$_->clear_links_to ($self) for values %cf::MAP;
		2261	$self->clear;
		2262
		2263	$self->unlink_save;
		2264	$self->destroy;
		2265	}
		2266
		2267	my $nuke_counter = "aaaa";
		2268
		2269	sub nuke {
		2270	my ($self) = @_;
		2271
		2272	{
		2273	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2274
		2275	delete $cf::MAP{$self->path};
		2276
		2277	$self->unlink_save;
		2278
		2279	bless $self, "cf::map";
		2280	delete $self->{deny_reset};
		2281	$self->{deny_save} = 1;
		2282	$self->reset_timeout (1);
		2283	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2284
		2285	$cf::MAP{$self->path} = $self;
		2286	}
		2287
		2288	$self->reset; # polite request, might not happen
		2289	}
		2290
		2291	=item $maps = cf::map::tmp_maps
		2292
		2293	Returns an arrayref with all map paths of currently instantiated and saved
		2294	maps. May block.
		2295
		2296	=cut
		2297
		2298	sub tmp_maps() {
		2299	[
		2300	map {
		2301	utf8::decode $_;
		2302	/\.map$/
		2303	? normalise $_
		2304	: ()
		2305	} @{ aio_readdir $TMPDIR or [] }
		2306	]
		2307	}
		2308
		2309	=item $maps = cf::map::random_maps
		2310
		2311	Returns an arrayref with all map paths of currently instantiated and saved
		2312	random maps. May block.
		2313
		2314	=cut
		2315
		2316	sub random_maps() {
		2317	[
		2318	map {
		2319	utf8::decode $_;
		2320	/\.map$/
		2321	? normalise "?random/$_"
		2322	: ()
		2323	} @{ aio_readdir $RANDOMDIR or [] }
		2324	]
		2325	}
		2326
		2327	=item cf::map::unique_maps
		2328
		2329	Returns an arrayref of paths of all shared maps that have
		2330	instantiated unique items. May block.
		2331
		2332	=cut
		2333
		2334	sub unique_maps() {
		2335	[
		2336	map {
		2337	utf8::decode $_;
		2338	s/\.map$//; # TODO future compatibility hack
		2339	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2340	? ()
		2341	: normalise $_
		2342	} @{ aio_readdir $UNIQUEDIR or [] }
		2343	]
		2344	}
		2345
		2346	=back
		2347
		2348	=head3 cf::object
		2349
		2350	=cut
		2351
		2352	package cf::object;
804		2353
805	=over 4	2354	=over 4
806		2355
807	=item cf::player::exists $login	2356	=item $ob->inv_recursive
808		2357
809	Returns true when the given account exists.	2358	Returns the inventory of the object I<and> their inventories, recursively,
		2359	but I<not> the object itself.
810		2360
811	=cut	2361	=cut
812		2362
813	sub cf::player::exists($) {	2363	sub inv_recursive_;
814	cf::player::find $_[0]	2364	sub inv_recursive_ {
815	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2365	map { $_, inv_recursive_ $_->inv } @_
816	}	2366	}
		2367
		2368	sub inv_recursive {
		2369	inv_recursive_ inv $_[0]
		2370	}
		2371
		2372	=item $ref = $ob->ref
		2373
		2374	Creates and returns a persistent reference to an object that can be stored as a string.
		2375
		2376	=item $ob = cf::object::deref ($refstring)
		2377
		2378	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2379	even if the object actually exists. May block.
		2380
		2381	=cut
		2382
		2383	sub deref {
		2384	my ($ref) = @_;
		2385
		2386	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2387	my ($uuid, $name) = ($1, $2);
		2388	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2389	or return;
		2390	$pl->ob->uuid eq $uuid
		2391	or return;
		2392
		2393	$pl->ob
		2394	} else {
		2395	warn "$ref: cannot resolve object reference\n";
		2396	undef
		2397	}
		2398	}
		2399
		2400	package cf;
		2401
		2402	=back
		2403
		2404	=head3 cf::object::player
		2405
		2406	=over 4
817		2407
818	=item $player_object->reply ($npc, $msg[, $flags])	2408	=item $player_object->reply ($npc, $msg[, $flags])
819		2409
820	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2410	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
821	can be C<undef>. Does the right thing when the player is currently in a	2411	can be C<undef>. Does the right thing when the player is currently in a
822	dialogue with the given NPC character.	2412	dialogue with the given NPC character.
823		2413
824	=cut	2414	=cut
825		2415
		2416	our $SAY_CHANNEL = {
		2417	id => "say",
		2418	title => "Map",
		2419	reply => "say ",
		2420	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2421	};
		2422
		2423	our $CHAT_CHANNEL = {
		2424	id => "chat",
		2425	title => "Chat",
		2426	reply => "chat ",
		2427	tooltip => "Player chat and shouts, global to the server.",
		2428	};
		2429
826	# rough implementation of a future "reply" method that works	2430	# rough implementation of a future "reply" method that works
827	# with dialog boxes.	2431	# with dialog boxes.
		2432	#TODO: the first argument must go, split into a $npc->reply_to ( method
828	sub cf::object::player::reply($$$;$) {	2433	sub cf::object::player::reply($$$;$) {
829	my ($self, $npc, $msg, $flags) = @_;	2434	my ($self, $npc, $msg, $flags) = @_;
830		2435
831	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2436	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
832		2437
833	if ($self->{record_replies}) {	2438	if ($self->{record_replies}) {
834	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2439	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2440
835	} else {	2441	} else {
		2442	my $pl = $self->contr;
		2443
		2444	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2445	my $dialog = $pl->{npc_dialog};
		2446	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2447
		2448	} else {
836	$msg = $npc->name . " says: $msg" if $npc;	2449	$msg = $npc->name . " says: $msg" if $npc;
837	$self->message ($msg, $flags);	2450	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2451	}
838	}	2452	}
839	}	2453	}
840		2454
841	=item $player->ext_reply ($msgid, $msgtype, %msg)	2455	=item $object->send_msg ($channel, $msg, $color, [extra...])
842		2456
843	Sends an ext reply to the player.
844
845	=cut	2457	=cut
846		2458
847	sub cf::player::ext_reply($$$%) {	2459	sub cf::object::send_msg {
848	my ($self, $id, %msg) = @_;	2460	my $pl = shift->contr
849		2461	or return;
850	$msg{msgid} = $id;	2462	$pl->send_msg (@_);
851
852	$self->send ("ext " . to_json \%msg);
853	}	2463	}
854		2464
855	=item $player_object->may ("access")	2465	=item $player_object->may ("access")
856		2466
857	Returns wether the given player is authorized to access resource "access"	2467	Returns wether the given player is authorized to access resource "access"
…		…
866	(ref $cf::CFG{"may_$access"}	2476	(ref $cf::CFG{"may_$access"}
867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2477	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
868	: $cf::CFG{"may_$access"})	2478	: $cf::CFG{"may_$access"})
869	}	2479	}
870		2480
871	=cut	2481	=item $player_object->enter_link
872		2482
873	#############################################################################	2483	Freezes the player and moves him/her to a special map (C<{link}>).
		2484
		2485	The player should be reasonably safe there for short amounts of time (e.g.
		2486	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2487	though, as the palyer cannot control the character while it is on the link
		2488	map.
		2489
		2490	Will never block.
		2491
		2492	=item $player_object->leave_link ($map, $x, $y)
		2493
		2494	Moves the player out of the special C<{link}> map onto the specified
		2495	map. If the map is not valid (or omitted), the player will be moved back
		2496	to the location he/she was before the call to C<enter_link>, or, if that
		2497	fails, to the emergency map position.
		2498
		2499	Might block.
		2500
		2501	=cut
		2502
		2503	sub link_map {
		2504	unless ($LINK_MAP) {
		2505	$LINK_MAP = cf::map::find "{link}"
		2506	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2507	$LINK_MAP->load;
		2508	}
		2509
		2510	$LINK_MAP
		2511	}
		2512
		2513	sub cf::object::player::enter_link {
		2514	my ($self) = @_;
		2515
		2516	$self->deactivate_recursive;
		2517
		2518	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2519
		2520	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2521	if $self->map && $self->map->{path} ne "{link}";
		2522
		2523	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2524	}
		2525
		2526	sub cf::object::player::leave_link {
		2527	my ($self, $map, $x, $y) = @_;
		2528
		2529	return unless $self->contr->active;
		2530
		2531	my $link_pos = delete $self->{_link_pos};
		2532
		2533	unless ($map) {
		2534	# restore original map position
		2535	($map, $x, $y) = @{ $link_pos || [] };
		2536	$map = cf::map::find $map;
		2537
		2538	unless ($map) {
		2539	($map, $x, $y) = @$EMERGENCY_POSITION;
		2540	$map = cf::map::find $map
		2541	or die "FATAL: cannot load emergency map\n";
		2542	}
		2543	}
		2544
		2545	($x, $y) = (-1, -1)
		2546	unless (defined $x) && (defined $y);
		2547
		2548	# use -1 or undef as default coordinates, not 0, 0
		2549	($x, $y) = ($map->enter_x, $map->enter_y)
		2550	if $x <=0 && $y <= 0;
		2551
		2552	$map->load;
		2553	$map->load_neighbours;
		2554
		2555	return unless $self->contr->active;
		2556
		2557	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2558	$self->enter_map ($map, $x, $y);
		2559
		2560	# only activate afterwards, to support waiting in hooks
		2561	$self->activate_recursive;
		2562	}
		2563
		2564	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2565
		2566	Moves the player to the given map-path and coordinates by first freezing
		2567	her, loading and preparing them map, calling the provided $check callback
		2568	that has to return the map if sucecssful, and then unfreezes the player on
		2569	the new (success) or old (failed) map position. In either case, $done will
		2570	be called at the end of this process.
		2571
		2572	Note that $check will be called with a potentially non-loaded map, so if
		2573	it needs a loaded map it has to call C<< ->load >>.
		2574
		2575	=cut
		2576
		2577	our $GOTOGEN;
		2578
		2579	sub cf::object::player::goto {
		2580	my ($self, $path, $x, $y, $check, $done) = @_;
		2581
		2582	# do generation counting so two concurrent goto's will be executed in-order
		2583	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2584
		2585	$self->enter_link;
		2586
		2587	(async {
		2588	$Coro::current->{desc} = "player::goto $path $x $y";
		2589
		2590	# *tag paths override both path and x|y
		2591	if ($path =~ /^\*(.*)$/) {
		2592	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2593	my $ob = $obs[rand @obs];
		2594
		2595	# see if we actually can go there
		2596	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2597	$ob = $obs[rand @obs];
		2598	} else {
		2599	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2600	}
		2601	# else put us there anyways for now #d#
		2602
		2603	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2604	} else {
		2605	($path, $x, $y) = (undef, undef, undef);
		2606	}
		2607	}
		2608
		2609	my $map = eval {
		2610	my $map = defined $path ? cf::map::find $path : undef;
		2611
		2612	if ($map) {
		2613	$map = $map->customise_for ($self);
		2614	$map = $check->($map) if $check && $map;
		2615	} else {
		2616	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2617	}
		2618
		2619	$map
		2620	};
		2621
		2622	if ($@) {
		2623	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2624	LOG llevError | logBacktrace, Carp::longmess $@;
		2625	}
		2626
		2627	if ($gen == $self->{_goto_generation}) {
		2628	delete $self->{_goto_generation};
		2629	$self->leave_link ($map, $x, $y);
		2630	}
		2631
		2632	$done->() if $done;
		2633	})->prio (1);
		2634	}
		2635
		2636	=item $player_object->enter_exit ($exit_object)
		2637
		2638	=cut
		2639
		2640	sub parse_random_map_params {
		2641	my ($spec) = @_;
		2642
		2643	my $rmp = { # defaults
		2644	xsize => (cf::rndm 15, 40),
		2645	ysize => (cf::rndm 15, 40),
		2646	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2647	#layout => string,
		2648	};
		2649
		2650	for (split /\n/, $spec) {
		2651	my ($k, $v) = split /\s+/, $_, 2;
		2652
		2653	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2654	}
		2655
		2656	$rmp
		2657	}
		2658
		2659	sub prepare_random_map {
		2660	my ($exit) = @_;
		2661
		2662	# all this does is basically replace the /! path by
		2663	# a new random map path (?random/...) with a seed
		2664	# that depends on the exit object
		2665
		2666	my $rmp = parse_random_map_params $exit->msg;
		2667
		2668	if ($exit->map) {
		2669	$rmp->{region} = $exit->region->name;
		2670	$rmp->{origin_map} = $exit->map->path;
		2671	$rmp->{origin_x} = $exit->x;
		2672	$rmp->{origin_y} = $exit->y;
		2673
		2674	$exit->map->touch;
		2675	}
		2676
		2677	$rmp->{random_seed} ||= $exit->random_seed;
		2678
		2679	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2680	my $md5 = Digest::MD5::md5_hex $data;
		2681	my $meta = "$RANDOMDIR/$md5.meta";
		2682
		2683	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2684	aio_write $fh, 0, (length $data), $data, 0;
		2685	undef $fh;
		2686	aio_rename "$meta~", $meta;
		2687
		2688	my $slaying = "?random/$md5";
		2689
		2690	if ($exit->valid) {
		2691	$exit->slaying ("?random/$md5");
		2692	$exit->msg (undef);
		2693	}
		2694	}
		2695	}
		2696
		2697	sub cf::object::player::enter_exit {
		2698	my ($self, $exit) = @_;
		2699
		2700	return unless $self->type == cf::PLAYER;
		2701
		2702	$self->enter_link;
		2703
		2704	(async {
		2705	$Coro::current->{desc} = "enter_exit";
		2706
		2707	unless (eval {
		2708	$self->deactivate_recursive; # just to be sure
		2709
		2710	# random map handling
		2711	{
		2712	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2713
		2714	prepare_random_map $exit
		2715	if $exit->slaying eq "/!";
		2716	}
		2717
		2718	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2719	my $x = $exit->stats->hp;
		2720	my $y = $exit->stats->sp;
		2721
		2722	$self->goto ($map, $x, $y);
		2723
		2724	# if exit is damned, update players death & WoR home-position
		2725	$self->contr->savebed ($map, $x, $y)
		2726	if $exit->flag (cf::FLAG_DAMNED);
		2727
		2728	1
		2729	}) {
		2730	$self->message ("Something went wrong deep within the deliantra server. "
		2731	. "I'll try to bring you back to the map you were before. "
		2732	. "Please report this to the dungeon master!",
		2733	cf::NDI_UNIQUE | cf::NDI_RED);
		2734
		2735	warn "ERROR in enter_exit: $@";
		2736	$self->leave_link;
		2737	}
		2738	})->prio (1);
		2739	}
		2740
		2741	=head3 cf::client
		2742
		2743	=over 4
		2744
		2745	=item $client->send_drawinfo ($text, $flags)
		2746
		2747	Sends a drawinfo packet to the client. Circumvents output buffering so
		2748	should not be used under normal circumstances.
		2749
		2750	=cut
		2751
		2752	sub cf::client::send_drawinfo {
		2753	my ($self, $text, $flags) = @_;
		2754
		2755	utf8::encode $text;
		2756	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2757	}
		2758
		2759	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2760
		2761	Send a drawinfo or msg packet to the client, formatting the msg for the
		2762	client if neccessary. C<$type> should be a string identifying the type of
		2763	the message, with C<log> being the default. If C<$color> is negative, suppress
		2764	the message unless the client supports the msg packet.
		2765
		2766	=cut
		2767
		2768	# non-persistent channels (usually the info channel)
		2769	our %CHANNEL = (
		2770	"c/motd" => {
		2771	id => "infobox",
		2772	title => "MOTD",
		2773	reply => undef,
		2774	tooltip => "The message of the day",
		2775	},
		2776	"c/identify" => {
		2777	id => "infobox",
		2778	title => "Identify",
		2779	reply => undef,
		2780	tooltip => "Items recently identified",
		2781	},
		2782	"c/examine" => {
		2783	id => "infobox",
		2784	title => "Examine",
		2785	reply => undef,
		2786	tooltip => "Signs and other items you examined",
		2787	},
		2788	"c/book" => {
		2789	id => "infobox",
		2790	title => "Book",
		2791	reply => undef,
		2792	tooltip => "The contents of a note or book",
		2793	},
		2794	"c/lookat" => {
		2795	id => "infobox",
		2796	title => "Look",
		2797	reply => undef,
		2798	tooltip => "What you saw there",
		2799	},
		2800	"c/who" => {
		2801	id => "infobox",
		2802	title => "Players",
		2803	reply => undef,
		2804	tooltip => "Shows players who are currently online",
		2805	},
		2806	"c/body" => {
		2807	id => "infobox",
		2808	title => "Body Parts",
		2809	reply => undef,
		2810	tooltip => "Shows which body parts you posess and are available",
		2811	},
		2812	"c/statistics" => {
		2813	id => "infobox",
		2814	title => "Statistics",
		2815	reply => undef,
		2816	tooltip => "Shows your primary statistics",
		2817	},
		2818	"c/skills" => {
		2819	id => "infobox",
		2820	title => "Skills",
		2821	reply => undef,
		2822	tooltip => "Shows your experience per skill and item power",
		2823	},
		2824	"c/shopitems" => {
		2825	id => "infobox",
		2826	title => "Shop Items",
		2827	reply => undef,
		2828	tooltip => "Shows the items currently for sale in this shop",
		2829	},
		2830	"c/resistances" => {
		2831	id => "infobox",
		2832	title => "Resistances",
		2833	reply => undef,
		2834	tooltip => "Shows your resistances",
		2835	},
		2836	"c/pets" => {
		2837	id => "infobox",
		2838	title => "Pets",
		2839	reply => undef,
		2840	tooltip => "Shows information abotu your pets/a specific pet",
		2841	},
		2842	"c/perceiveself" => {
		2843	id => "infobox",
		2844	title => "Perceive Self",
		2845	reply => undef,
		2846	tooltip => "You gained detailed knowledge about yourself",
		2847	},
		2848	"c/uptime" => {
		2849	id => "infobox",
		2850	title => "Uptime",
		2851	reply => undef,
		2852	tooltip => "How long the server has been running since last restart",
		2853	},
		2854	"c/mapinfo" => {
		2855	id => "infobox",
		2856	title => "Map Info",
		2857	reply => undef,
		2858	tooltip => "Information related to the maps",
		2859	},
		2860	"c/party" => {
		2861	id => "party",
		2862	title => "Party",
		2863	reply => "gsay ",
		2864	tooltip => "Messages and chat related to your party",
		2865	},
		2866	"c/death" => {
		2867	id => "death",
		2868	title => "Death",
		2869	reply => undef,
		2870	tooltip => "Reason for and more info about your most recent death",
		2871	},
		2872	"c/say" => $SAY_CHANNEL,
		2873	"c/chat" => $CHAT_CHANNEL,
		2874	);
		2875
		2876	sub cf::client::send_msg {
		2877	my ($self, $channel, $msg, $color, @extra) = @_;
		2878
		2879	$msg = $self->pl->expand_cfpod ($msg)
		2880	unless $color & cf::NDI_VERBATIM;
		2881
		2882	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2883
		2884	# check predefined channels, for the benefit of C
		2885	if ($CHANNEL{$channel}) {
		2886	$channel = $CHANNEL{$channel};
		2887
		2888	$self->ext_msg (channel_info => $channel);
		2889	$channel = $channel->{id};
		2890
		2891	} elsif (ref $channel) {
		2892	# send meta info to client, if not yet sent
		2893	unless (exists $self->{channel}{$channel->{id}}) {
		2894	$self->{channel}{$channel->{id}} = $channel;
		2895	$self->ext_msg (channel_info => $channel);
		2896	}
		2897
		2898	$channel = $channel->{id};
		2899	}
		2900
		2901	return unless @extra || length $msg;
		2902
		2903	# default colour, mask it out
		2904	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2905	if $color & cf::NDI_DEF;
		2906
		2907	my $pkt = "msg "
		2908	. $self->{json_coder}->encode (
		2909	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2910	);
		2911
		2912	# try lzf for large packets
		2913	$pkt = "lzf " . Compress::LZF::compress $pkt
		2914	if 1024 <= length $pkt and $self->{can_lzf};
		2915
		2916	# split very large packets
		2917	if (8192 < length $pkt and $self->{can_lzf}) {
		2918	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2919	$pkt = "frag";
		2920	}
		2921
		2922	$self->send_packet ($pkt);
		2923	}
		2924
		2925	=item $client->ext_msg ($type, @msg)
		2926
		2927	Sends an ext event to the client.
		2928
		2929	=cut
		2930
		2931	sub cf::client::ext_msg($$@) {
		2932	my ($self, $type, @msg) = @_;
		2933
		2934	if ($self->extcmd == 2) {
		2935	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2936	} elsif ($self->extcmd == 1) { # TODO: remove
		2937	push @msg, msgtype => "event_$type";
		2938	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2939	}
		2940	}
		2941
		2942	=item $client->ext_reply ($msgid, @msg)
		2943
		2944	Sends an ext reply to the client.
		2945
		2946	=cut
		2947
		2948	sub cf::client::ext_reply($$@) {
		2949	my ($self, $id, @msg) = @_;
		2950
		2951	if ($self->extcmd == 2) {
		2952	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2953	} elsif ($self->extcmd == 1) {
		2954	#TODO: version 1, remove
		2955	unshift @msg, msgtype => "reply", msgid => $id;
		2956	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2957	}
		2958	}
		2959
		2960	=item $success = $client->query ($flags, "text", \&cb)
		2961
		2962	Queues a query to the client, calling the given callback with
		2963	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2964	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2965
		2966	Queries can fail, so check the return code. Or don't, as queries will
		2967	become reliable at some point in the future.
		2968
		2969	=cut
		2970
		2971	sub cf::client::query {
		2972	my ($self, $flags, $text, $cb) = @_;
		2973
		2974	return unless $self->state == ST_PLAYING
		2975	|| $self->state == ST_SETUP
		2976	|| $self->state == ST_CUSTOM;
		2977
		2978	$self->state (ST_CUSTOM);
		2979
		2980	utf8::encode $text;
		2981	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2982
		2983	$self->send_packet ($self->{query_queue}[0][0])
		2984	if @{ $self->{query_queue} } == 1;
		2985
		2986	1
		2987	}
		2988
		2989	cf::client->attach (
		2990	on_connect => sub {
		2991	my ($ns) = @_;
		2992
		2993	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2994	},
		2995	on_reply => sub {
		2996	my ($ns, $msg) = @_;
		2997
		2998	# this weird shuffling is so that direct followup queries
		2999	# get handled first
		3000	my $queue = delete $ns->{query_queue}
		3001	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3002
		3003	(shift @$queue)->[1]->($msg);
		3004	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3005
		3006	push @{ $ns->{query_queue} }, @$queue;
		3007
		3008	if (@{ $ns->{query_queue} } == @$queue) {
		3009	if (@$queue) {
		3010	$ns->send_packet ($ns->{query_queue}[0][0]);
		3011	} else {
		3012	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3013	}
		3014	}
		3015	},
		3016	on_exticmd => sub {
		3017	my ($ns, $buf) = @_;
		3018
		3019	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3020
		3021	if (ref $msg) {
		3022	my ($type, $reply, @payload) =
		3023	"ARRAY" eq ref $msg
		3024	? @$msg
		3025	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3026
		3027	my @reply;
		3028
		3029	if (my $cb = $EXTICMD{$type}) {
		3030	@reply = $cb->($ns, @payload);
		3031	}
		3032
		3033	$ns->ext_reply ($reply, @reply)
		3034	if $reply;
		3035
		3036	} else {
		3037	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3038	}
		3039
		3040	cf::override;
		3041	},
		3042	);
		3043
		3044	=item $client->async (\&cb)
		3045
		3046	Create a new coroutine, running the specified callback. The coroutine will
		3047	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3048	or loss of connection).
		3049
		3050	=cut
		3051
		3052	sub cf::client::async {
		3053	my ($self, $cb) = @_;
		3054
		3055	my $coro = &Coro::async ($cb);
		3056
		3057	$coro->on_destroy (sub {
		3058	delete $self->{_coro}{$coro+0};
		3059	});
		3060
		3061	$self->{_coro}{$coro+0} = $coro;
		3062
		3063	$coro
		3064	}
		3065
		3066	cf::client->attach (
		3067	on_destroy => sub {
		3068	my ($ns) = @_;
		3069
		3070	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3071	},
		3072	);
		3073
		3074	=back
		3075
874		3076
875	=head2 SAFE SCRIPTING	3077	=head2 SAFE SCRIPTING
876		3078
877	Functions that provide a safe environment to compile and execute	3079	Functions that provide a safe environment to compile and execute
878	snippets of perl code without them endangering the safety of the server	3080	snippets of perl code without them endangering the safety of the server
…		…
885	our $safe = new Safe "safe";	3087	our $safe = new Safe "safe";
886	our $safe_hole = new Safe::Hole;	3088	our $safe_hole = new Safe::Hole;
887		3089
888	$SIG{FPE} = 'IGNORE';	3090	$SIG{FPE} = 'IGNORE';
889		3091
890	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3092	$safe->permit_only (Opcode::opset qw(
		3093	:base_core :base_mem :base_orig :base_math
		3094	grepstart grepwhile mapstart mapwhile
		3095	sort time
		3096	));
891		3097
892	# here we export the classes and methods available to script code	3098	# here we export the classes and methods available to script code
893		3099
894	=pod	3100	=pod
895		3101
896	The following fucntions and emthods are available within a safe environment:	3102	The following functions and methods are available within a safe environment:
897		3103
898	cf::object contr pay_amount pay_player map	3104	cf::object
		3105	contr pay_amount pay_player map x y force_find force_add destroy
		3106	insert remove name archname title slaying race decrease split
		3107	value
		3108
899	cf::object::player player	3109	cf::object::player
900	cf::player peaceful	3110	player
901	cf::map trigger	3111
		3112	cf::player
		3113	peaceful
		3114
		3115	cf::map
		3116	trigger
902		3117
903	=cut	3118	=cut
904		3119
905	for (	3120	for (
906	["cf::object" => qw(contr pay_amount pay_player map)],	3121	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3122	insert remove inv nrof name archname title slaying race
		3123	decrease split destroy change_exp value msg lore send_msg)],
907	["cf::object::player" => qw(player)],	3124	["cf::object::player" => qw(player)],
908	["cf::player" => qw(peaceful)],	3125	["cf::player" => qw(peaceful send_msg)],
909	["cf::map" => qw(trigger)],	3126	["cf::map" => qw(trigger)],
910	) {	3127	) {
911	no strict 'refs';	3128	no strict 'refs';
912	my ($pkg, @funs) = @$_;	3129	my ($pkg, @funs) = @$_;
913	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3130	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
…		…
930	my ($code, %vars) = @_;	3147	my ($code, %vars) = @_;
931		3148
932	my $qcode = $code;	3149	my $qcode = $code;
933	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3150	$qcode =~ s/"/‟/g; # not allowed in #line filenames
934	$qcode =~ s/\n/\\n/g;	3151	$qcode =~ s/\n/\\n/g;
		3152
		3153	%vars = (_dummy => 0) unless %vars;
935		3154
936	local $_;	3155	local $_;
937	local @safe::cf::_safe_eval_args = values %vars;	3156	local @safe::cf::_safe_eval_args = values %vars;
938		3157
939	my $eval =	3158	my $eval =
…		…
982	=back	3201	=back
983		3202
984	=cut	3203	=cut
985		3204
986	#############################################################################	3205	#############################################################################
		3206	# the server's init and main functions
987		3207
988	=head2 EXTENSION DATABASE SUPPORT	3208	sub load_facedata($) {
		3209	my ($path) = @_;
989		3210
990	Crossfire maintains a very simple database for extension use. It can	3211	# HACK to clear player env face cache, we need some signal framework
991	currently store anything that can be serialised using Storable, which	3212	# for this (global event?)
992	excludes objects.	3213	%ext::player_env::MUSIC_FACE_CACHE = ();
993		3214
994	The parameter C<$family> should best start with the name of the extension	3215	my $enc = JSON::XS->new->utf8->canonical->relaxed;
995	using it, it should be unique.
996		3216
997	=over 4	3217	warn "loading facedata from $path\n";
998		3218
999	=item $hashref = cf::db_get $family	3219	my $facedata;
		3220	0 < aio_load $path, $facedata
		3221	or die "$path: $!";
1000		3222
1001	Return a hashref for use by the extension C<$family>, which can be	3223	$facedata = Coro::Storable::thaw $facedata;
1002	modified. After modifications, you have to call C<cf::db_dirty> or
1003	C<cf::db_sync>.
1004		3224
1005	=item $value = cf::db_get $family => $key	3225	$facedata->{version} == 2
		3226	or cf::cleanup "$path: version mismatch, cannot proceed.";
1006		3227
1007	Returns a single value from the database	3228	# patch in the exptable
		3229	$facedata->{resource}{"res/exp_table"} = {
		3230	type => FT_RSRC,
		3231	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3232	};
		3233	cf::cede_to_tick;
1008		3234
1009	=item cf::db_put $family => $hashref	3235	{
		3236	my $faces = $facedata->{faceinfo};
1010		3237
1011	Stores the given family hashref into the database. Updates are delayed, if	3238	while (my ($face, $info) = each %$faces) {
1012	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3239	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1013		3240
1014	=item cf::db_put $family => $key => $value	3241	cf::face::set_visibility $idx, $info->{visibility};
		3242	cf::face::set_magicmap $idx, $info->{magicmap};
		3243	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3244	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1015		3245
1016	Stores the given C<$value> in the family hash. Updates are delayed, if you	3246	cf::cede_to_tick;
1017	want the data to be synced to disk immediately, use C<cf::db_sync>.	3247	}
1018		3248
1019	=item cf::db_dirty	3249	while (my ($face, $info) = each %$faces) {
		3250	next unless $info->{smooth};
1020		3251
1021	Marks the database as dirty, to be updated at a later time.	3252	my $idx = cf::face::find $face
		3253	or next;
1022		3254
1023	=item cf::db_sync	3255	if (my $smooth = cf::face::find $info->{smooth}) {
		3256	cf::face::set_smooth $idx, $smooth;
		3257	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3258	} else {
		3259	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3260	}
1024		3261
1025	Immediately write the database to disk I<if it is dirty>.	3262	cf::cede_to_tick;
		3263	}
		3264	}
1026		3265
1027	=cut	3266	{
		3267	my $anims = $facedata->{animinfo};
1028		3268
1029	our $DB;	3269	while (my ($anim, $info) = each %$anims) {
		3270	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3271	cf::cede_to_tick;
		3272	}
		3273
		3274	cf::anim::invalidate_all; # d'oh
		3275	}
		3276
		3277	{
		3278	# TODO: for gcfclient pleasure, we should give resources
		3279	# that gcfclient doesn't grok a >10000 face index.
		3280	my $res = $facedata->{resource};
		3281
		3282	while (my ($name, $info) = each %$res) {
		3283	if (defined $info->{type}) {
		3284	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3285	my $data;
		3286
		3287	if ($info->{type} & 1) {
		3288	# prepend meta info
		3289
		3290	my $meta = $enc->encode ({
		3291	name => $name,
		3292	%{ $info->{meta} || {} },
		3293	});
		3294
		3295	$data = pack "(w/a*)*", $meta, $info->{data};
		3296	} else {
		3297	$data = $info->{data};
		3298	}
		3299
		3300	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3301	cf::face::set_type $idx, $info->{type};
		3302	} else {
		3303	$RESOURCE{$name} = $info;
		3304	}
		3305
		3306	cf::cede_to_tick;
		3307	}
		3308	}
		3309
		3310	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3311
		3312	1
		3313	}
		3314
		3315	cf::global->attach (on_resource_update => sub {
		3316	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3317	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3318
		3319	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3320	my $sound = $soundconf->{compat}[$_]
		3321	or next;
		3322
		3323	my $face = cf::face::find "sound/$sound->[1]";
		3324	cf::sound::set $sound->[0] => $face;
		3325	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3326	}
		3327
		3328	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3329	my $face = cf::face::find "sound/$v";
		3330	cf::sound::set $k => $face;
		3331	}
		3332	}
		3333	});
		3334
		3335	register_exticmd fx_want => sub {
		3336	my ($ns, $want) = @_;
		3337
		3338	while (my ($k, $v) = each %$want) {
		3339	$ns->fx_want ($k, $v);
		3340	}
		3341	};
		3342
		3343	sub load_resource_file($) {
		3344	my $guard = lock_acquire "load_resource_file";
		3345
		3346	my $status = load_resource_file_ $_[0];
		3347	get_slot 0.1, 100;
		3348	cf::arch::commit_load;
		3349
		3350	$status
		3351	}
		3352
		3353	sub reload_regions {
		3354	# HACK to clear player env face cache, we need some signal framework
		3355	# for this (global event?)
		3356	%ext::player_env::MUSIC_FACE_CACHE = ();
		3357
		3358	load_resource_file "$MAPDIR/regions"
		3359	or die "unable to load regions file\n";
		3360
		3361	for (cf::region::list) {
		3362	$_->{match} = qr/$_->{match}/
		3363	if exists $_->{match};
		3364	}
		3365	}
		3366
		3367	sub reload_facedata {
		3368	load_facedata "$DATADIR/facedata"
		3369	or die "unable to load facedata\n";
		3370	}
		3371
		3372	sub reload_archetypes {
		3373	load_resource_file "$DATADIR/archetypes"
		3374	or die "unable to load archetypes\n";
		3375	}
		3376
		3377	sub reload_treasures {
		3378	load_resource_file "$DATADIR/treasures"
		3379	or die "unable to load treasurelists\n";
		3380	}
		3381
		3382	sub reload_resources {
		3383	warn "reloading resource files...\n";
		3384
		3385	reload_facedata;
		3386	reload_archetypes;
		3387	reload_regions;
		3388	reload_treasures;
		3389
		3390	warn "finished reloading resource files\n";
		3391	}
		3392
		3393	sub reload_config {
		3394	warn "reloading config file...\n";
		3395
		3396	open my $fh, "<:utf8", "$CONFDIR/config"
		3397	or return;
		3398
		3399	local $/;
		3400	*CFG = YAML::XS::Load scalar <$fh>;
		3401
		3402	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3403
		3404	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3405	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3406
		3407	if (exists $CFG{mlockall}) {
		3408	eval {
		3409	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3410	and die "WARNING: m(un)lockall failed: $!\n";
		3411	};
		3412	warn $@ if $@;
		3413	}
		3414
		3415	warn "finished reloading resource files\n";
		3416	}
		3417
		3418	sub pidfile() {
		3419	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3420	or die "$PIDFILE: $!";
		3421	flock $fh, &Fcntl::LOCK_EX
		3422	or die "$PIDFILE: flock: $!";
		3423	$fh
		3424	}
		3425
		3426	# make sure only one server instance is running at any one time
		3427	sub atomic {
		3428	my $fh = pidfile;
		3429
		3430	my $pid = <$fh>;
		3431	kill 9, $pid if $pid > 0;
		3432
		3433	seek $fh, 0, 0;
		3434	print $fh $$;
		3435	}
		3436
		3437	sub main_loop {
		3438	warn "EV::loop starting\n";
		3439	if (1) {
		3440	EV::loop;
		3441	}
		3442	warn "EV::loop returned\n";
		3443	goto &main_loop unless $REALLY_UNLOOP;
		3444	}
		3445
		3446	sub main {
		3447	cf::init_globals; # initialise logging
		3448
		3449	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3450	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3451	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3452	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3453
		3454	cf::init_experience;
		3455	cf::init_anim;
		3456	cf::init_attackmess;
		3457	cf::init_dynamic;
		3458
		3459	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3460
		3461	# we must not ever block the main coroutine
		3462	local $Coro::idle = sub {
		3463	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3464	(async {
		3465	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3466	EV::loop EV::LOOP_ONESHOT;
		3467	})->prio (Coro::PRIO_MAX);
		3468	};
		3469
		3470	evthread_start IO::AIO::poll_fileno;
		3471
		3472	cf::sync_job {
		3473	reload_resources;
		3474	reload_config;
		3475	db_init;
		3476
		3477	cf::load_settings;
		3478	cf::load_materials;
		3479	cf::init_uuid;
		3480	cf::init_signals;
		3481	cf::init_commands;
		3482	cf::init_skills;
		3483
		3484	cf::init_beforeplay;
		3485
		3486	atomic;
		3487
		3488	load_extensions;
		3489
		3490	utime time, time, $RUNTIMEFILE;
		3491
		3492	# no (long-running) fork's whatsoever before this point(!)
		3493	use POSIX ();
		3494	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3495
		3496	(pop @POST_INIT)->(0) while @POST_INIT;
		3497	};
		3498
		3499	main_loop;
		3500	}
		3501
		3502	#############################################################################
		3503	# initialisation and cleanup
		3504
		3505	# install some emergency cleanup handlers
		3506	BEGIN {
		3507	our %SIGWATCHER = ();
		3508	for my $signal (qw(INT HUP TERM)) {
		3509	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3510	cf::cleanup "SIG$signal";
		3511	};
		3512	}
		3513	}
		3514
		3515	sub write_runtime_sync {
		3516	# first touch the runtime file to show we are still running:
		3517	# the fsync below can take a very very long time.
		3518
		3519	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3520
		3521	my $guard = cf::lock_acquire "write_runtime";
		3522
		3523	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3524	or return;
		3525
		3526	my $value = $cf::RUNTIME + 90 + 10;
		3527	# 10 is the runtime save interval, for a monotonic clock
		3528	# 60 allows for the watchdog to kill the server.
		3529
		3530	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3531	and return;
		3532
		3533	# always fsync - this file is important
		3534	aio_fsync $fh
		3535	and return;
		3536
		3537	# touch it again to show we are up-to-date
		3538	aio_utime $fh, undef, undef;
		3539
		3540	close $fh
		3541	or return;
		3542
		3543	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3544	and return;
		3545
		3546	warn "runtime file written.\n";
		3547
		3548	1
		3549	}
		3550
		3551	our $uuid_lock;
		3552	our $uuid_skip;
		3553
		3554	sub write_uuid_sync($) {
		3555	$uuid_skip ||= $_[0];
		3556
		3557	return if $uuid_lock;
		3558	local $uuid_lock = 1;
		3559
		3560	my $uuid = "$LOCALDIR/uuid";
		3561
		3562	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3563	or return;
		3564
		3565	my $value = uuid_seq uuid_cur;
		3566
		3567	unless ($value) {
		3568	warn "cowardly refusing to write zero uuid value!\n";
		3569	return;
		3570	}
		3571
		3572	my $value = uuid_str $value + $uuid_skip;
		3573	$uuid_skip = 0;
		3574
		3575	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3576	and return;
		3577
		3578	# always fsync - this file is important
		3579	aio_fsync $fh
		3580	and return;
		3581
		3582	close $fh
		3583	or return;
		3584
		3585	aio_rename "$uuid~", $uuid
		3586	and return;
		3587
		3588	warn "uuid file written ($value).\n";
		3589
		3590	1
		3591
		3592	}
		3593
		3594	sub write_uuid($$) {
		3595	my ($skip, $sync) = @_;
		3596
		3597	$sync ? write_uuid_sync $skip
		3598	: async { write_uuid_sync $skip };
		3599	}
		3600
		3601	sub emergency_save() {
		3602	my $freeze_guard = cf::freeze_mainloop;
		3603
		3604	warn "emergency_perl_save: enter\n";
		3605
		3606	cf::sync_job {
		3607	# this is a trade-off: we want to be very quick here, so
		3608	# save all maps without fsync, and later call a global sync
		3609	# (which in turn might be very very slow)
		3610	local $USE_FSYNC = 0;
		3611
		3612	# use a peculiar iteration method to avoid tripping on perl
		3613	# refcount bugs in for. also avoids problems with players
		3614	# and maps saved/destroyed asynchronously.
		3615	warn "emergency_perl_save: begin player save\n";
		3616	for my $login (keys %cf::PLAYER) {
		3617	my $pl = $cf::PLAYER{$login} or next;
		3618	$pl->valid or next;
		3619	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3620	$pl->save;
		3621	}
		3622	warn "emergency_perl_save: end player save\n";
		3623
		3624	warn "emergency_perl_save: begin map save\n";
		3625	for my $path (keys %cf::MAP) {
		3626	my $map = $cf::MAP{$path} or next;
		3627	$map->valid or next;
		3628	$map->save;
		3629	}
		3630	warn "emergency_perl_save: end map save\n";
		3631
		3632	warn "emergency_perl_save: begin database checkpoint\n";
		3633	BDB::db_env_txn_checkpoint $DB_ENV;
		3634	warn "emergency_perl_save: end database checkpoint\n";
		3635
		3636	warn "emergency_perl_save: begin write uuid\n";
		3637	write_uuid_sync 1;
		3638	warn "emergency_perl_save: end write uuid\n";
		3639	};
		3640
		3641	warn "emergency_perl_save: starting sync()\n";
		3642	IO::AIO::aio_sync sub {
		3643	warn "emergency_perl_save: finished sync()\n";
		3644	};
		3645
		3646	warn "emergency_perl_save: leave\n";
		3647	}
		3648
		3649	sub post_cleanup {
		3650	my ($make_core) = @_;
		3651
		3652	warn Carp::longmess "post_cleanup backtrace"
		3653	if $make_core;
		3654
		3655	my $fh = pidfile;
		3656	unlink $PIDFILE if <$fh> == $$;
		3657	}
		3658
		3659	# a safer delete_package, copied from Symbol
		3660	sub clear_package($) {
		3661	my $pkg = shift;
		3662
		3663	# expand to full symbol table name if needed
		3664	unless ($pkg =~ /^main::.*::$/) {
		3665	$pkg = "main$pkg" if $pkg =~ /^::/;
		3666	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3667	$pkg .= '::' unless $pkg =~ /::$/;
		3668	}
		3669
		3670	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3671	my $stem_symtab = *{$stem}{HASH};
		3672
		3673	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3674	or return;
		3675
		3676	# clear all symbols
		3677	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3678	for my $name (keys %$leaf_symtab) {
		3679	_gv_clear *{"$pkg$name"};
		3680	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3681	}
		3682	warn "cleared package $pkg\n";#d#
		3683	}
		3684
		3685	sub do_reload_perl() {
		3686	# can/must only be called in main
		3687	if ($Coro::current != $Coro::main) {
		3688	warn "can only reload from main coroutine";
		3689	return;
		3690	}
		3691
		3692	return if $RELOAD++;
		3693
		3694	my $t1 = EV::time;
		3695
		3696	while ($RELOAD) {
		3697	warn "reloading...";
		3698
		3699	warn "entering sync_job";
		3700
		3701	cf::sync_job {
		3702	cf::write_runtime_sync; # external watchdog should not bark
		3703	cf::emergency_save;
		3704	cf::write_runtime_sync; # external watchdog should not bark
		3705
		3706	warn "syncing database to disk";
		3707	BDB::db_env_txn_checkpoint $DB_ENV;
		3708
		3709	# if anything goes wrong in here, we should simply crash as we already saved
		3710
		3711	warn "flushing outstanding aio requests";
		3712	while (IO::AIO::nreqs || BDB::nreqs) {
		3713	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3714	}
		3715
		3716	warn "cancelling all extension coros";
		3717	$_->cancel for values %EXT_CORO;
		3718	%EXT_CORO = ();
		3719
		3720	warn "removing commands";
		3721	%COMMAND = ();
		3722
		3723	warn "removing ext/exti commands";
		3724	%EXTCMD = ();
		3725	%EXTICMD = ();
		3726
		3727	warn "unloading/nuking all extensions";
		3728	for my $pkg (@EXTS) {
		3729	warn "... unloading $pkg";
		3730
		3731	if (my $cb = $pkg->can ("unload")) {
		3732	eval {
		3733	$cb->($pkg);
		3734	1
		3735	} or warn "$pkg unloaded, but with errors: $@";
		3736	}
		3737
		3738	warn "... clearing $pkg";
		3739	clear_package $pkg;
		3740	}
		3741
		3742	warn "unloading all perl modules loaded from $LIBDIR";
		3743	while (my ($k, $v) = each %INC) {
		3744	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3745
		3746	warn "... unloading $k";
		3747	delete $INC{$k};
		3748
		3749	$k =~ s/\.pm$//;
		3750	$k =~ s/\//::/g;
		3751
		3752	if (my $cb = $k->can ("unload_module")) {
		3753	$cb->();
		3754	}
		3755
		3756	clear_package $k;
		3757	}
		3758
		3759	warn "getting rid of safe::, as good as possible";
		3760	clear_package "safe::$_"
		3761	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3762
		3763	warn "unloading cf.pm \"a bit\"";
		3764	delete $INC{"cf.pm"};
		3765	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3766
		3767	# don't, removes xs symbols, too,
		3768	# and global variables created in xs
		3769	#clear_package __PACKAGE__;
		3770
		3771	warn "unload completed, starting to reload now";
		3772
		3773	warn "reloading cf.pm";
		3774	require cf;
		3775	cf::_connect_to_perl_1;
		3776
		3777	warn "loading config and database again";
		3778	cf::reload_config;
		3779
		3780	warn "loading extensions";
		3781	cf::load_extensions;
		3782
		3783	if ($REATTACH_ON_RELOAD) {
		3784	warn "reattaching attachments to objects/players";
		3785	_global_reattach; # objects, sockets
		3786	warn "reattaching attachments to maps";
		3787	reattach $_ for values %MAP;
		3788	warn "reattaching attachments to players";
		3789	reattach $_ for values %PLAYER;
		3790	}
		3791
		3792	warn "running post_init jobs";
		3793	(pop @POST_INIT)->(1) while @POST_INIT;
		3794
		3795	warn "leaving sync_job";
		3796
		3797	1
		3798	} or do {
		3799	warn $@;
		3800	cf::cleanup "error while reloading, exiting.";
		3801	};
		3802
		3803	warn "reloaded";
		3804	--$RELOAD;
		3805	}
		3806
		3807	$t1 = EV::time - $t1;
		3808	warn "reload completed in ${t1}s\n";
		3809	};
		3810
		3811	our $RELOAD_WATCHER; # used only during reload
		3812
		3813	sub reload_perl() {
		3814	# doing reload synchronously and two reloads happen back-to-back,
		3815	# coro crashes during coro_state_free->destroy here.
		3816
		3817	$RELOAD_WATCHER ||= cf::async {
		3818	Coro::AIO::aio_wait cache_extensions;
		3819
		3820	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
		3821	do_reload_perl;
		3822	undef $RELOAD_WATCHER;
		3823	};
		3824	};
		3825	}
		3826
		3827	register_command "reload" => sub {
		3828	my ($who, $arg) = @_;
		3829
		3830	if ($who->flag (FLAG_WIZ)) {
		3831	$who->message ("reloading server.");
		3832	async {
		3833	$Coro::current->{desc} = "perl_reload";
		3834	reload_perl;
		3835	};
		3836	}
		3837	};
		3838
		3839	unshift @INC, $LIBDIR;
		3840
		3841	my $bug_warning = 0;
		3842
		3843	our @WAIT_FOR_TICK;
		3844	our @WAIT_FOR_TICK_BEGIN;
		3845
		3846	sub wait_for_tick {
		3847	return if tick_inhibit || $Coro::current == $Coro::main;
		3848
		3849	my $signal = new Coro::Signal;
		3850	push @WAIT_FOR_TICK, $signal;
		3851	$signal->wait;
		3852	}
		3853
		3854	sub wait_for_tick_begin {
		3855	return if tick_inhibit || $Coro::current == $Coro::main;
		3856
		3857	my $signal = new Coro::Signal;
		3858	push @WAIT_FOR_TICK_BEGIN, $signal;
		3859	$signal->wait;
		3860	}
		3861
		3862	sub tick {
		3863	if ($Coro::current != $Coro::main) {
		3864	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3865	unless ++$bug_warning > 10;
		3866	return;
		3867	}
		3868
		3869	cf::server_tick; # one server iteration
		3870
		3871	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3872	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3873	Coro::async_pool {
		3874	$Coro::current->{desc} = "runtime saver";
		3875	write_runtime_sync
		3876	or warn "ERROR: unable to write runtime file: $!";
		3877	};
		3878	}
		3879
		3880	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3881	$sig->send;
		3882	}
		3883	while (my $sig = shift @WAIT_FOR_TICK) {
		3884	$sig->send;
		3885	}
		3886
		3887	$LOAD = ($NOW - $TICK_START) / $TICK;
		3888	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3889
		3890	if (0) {
		3891	if ($NEXT_TICK) {
		3892	my $jitter = $TICK_START - $NEXT_TICK;
		3893	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3894	warn "jitter $JITTER\n";#d#
		3895	}
		3896	}
		3897	}
1030		3898
1031	{	3899	{
1032	my $path = cf::localdir . "/database.pst";	3900	# configure BDB
1033		3901
1034	sub db_load() {	3902	BDB::min_parallel 8;
1035	warn "loading database $path\n";#d# remove later	3903	BDB::max_poll_reqs $TICK * 0.1;
1036	$DB = stat $path ? Storable::retrieve $path : { };	3904	$AnyEvent::BDB::WATCHER->priority (1);
1037	}
1038		3905
1039	my $pid;	3906	unless ($DB_ENV) {
		3907	$DB_ENV = BDB::db_env_create;
		3908	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3909	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3910	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3911	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3912	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1040		3913
1041	sub db_save() {	3914	cf::sync_job {
1042	warn "saving database $path\n";#d# remove later
1043	waitpid $pid, 0 if $pid;
1044	if (0 == ($pid = fork)) {
1045	$DB->{_meta}{version} = 1;
1046	Storable::nstore $DB, "$path~";
1047	rename "$path~", $path;
1048	cf::_exit 0 if defined $pid;
1049	}
1050	}
1051
1052	my $dirty;
1053
1054	sub db_sync() {
1055	db_save if $dirty;
1056	undef $dirty;
1057	}
1058
1059	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1060	db_sync;
1061	});
1062
1063	sub db_dirty() {
1064	$dirty = 1;
1065	$idle->start;
1066	}
1067
1068	sub db_get($;$) {
1069	@_ >= 2
1070	? $DB->{$_[0]}{$_[1]}
1071	: ($DB->{$_[0]} ||= { })
1072	}
1073
1074	sub db_put($$;$) {
1075	if (@_ >= 3) {
1076	$DB->{$_[0]}{$_[1]} = $_[2];
1077	} else {	3915	eval {
1078	$DB->{$_[0]} = $_[1];	3916	BDB::db_env_open
1079	}	3917	$DB_ENV,
1080	db_dirty;	3918	$BDBDIR,
1081	}	3919	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3920	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3921	0666;
1082		3922
1083	attach_global	3923	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1084	prio => 10000,
1085	on_cleanup => sub {
1086	db_sync;
1087	},
1088	;
1089	}
1090
1091	#############################################################################
1092	# the server's main()
1093
1094	sub cfg_load {
1095	open my $fh, "<:utf8", cf::confdir . "/config"
1096	or return;
1097
1098	local $/;
1099	*CFG = YAML::Syck::Load <$fh>;
1100	}
1101
1102	sub main {
1103	cfg_load;
1104	db_load;
1105	load_extensions;
1106	Event::loop;
1107	}
1108
1109	#############################################################################
1110	# initialisation
1111
1112	sub _perl_reload(&) {
1113	my ($msg) = @_;
1114
1115	$msg->("reloading...");
1116
1117	eval {
1118	# cancel all watchers
1119	for (Event::all_watchers) {
1120	$_->cancel if $_->data & WF_AUTOCANCEL;
1121	}
1122
1123	# unload all extensions
1124	for (@exts) {
1125	$msg->("unloading <$_>");
1126	unload_extension $_;
1127	}
1128
1129	# unload all modules loaded from $LIBDIR
1130	while (my ($k, $v) = each %INC) {
1131	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1132
1133	$msg->("removing <$k>");
1134	delete $INC{$k};
1135
1136	$k =~ s/\.pm$//;
1137	$k =~ s/\//::/g;
1138
1139	if (my $cb = $k->can ("unload_module")) {
1140	$cb->();
1141	}	3924	};
1142		3925
1143	Symbol::delete_package $k;	3926	cf::cleanup "db_env_open(db): $@" if $@;
1144	}	3927	};
		3928	}
1145		3929
1146	# sync database to disk	3930	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1147	cf::db_sync;	3931	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1148
1149	# get rid of safe::, as good as possible
1150	Symbol::delete_package "safe::$_"
1151	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1152
1153	# remove register_script_function callbacks
1154	# TODO
1155
1156	# unload cf.pm "a bit"
1157	delete $INC{"cf.pm"};
1158
1159	# don't, removes xs symbols, too,
1160	# and global variables created in xs
1161	#Symbol::delete_package __PACKAGE__;
1162
1163	# reload cf.pm
1164	$msg->("reloading cf.pm");
1165	require cf;
1166
1167	# load config and database again
1168	cf::cfg_load;
1169	cf::db_load;
1170
1171	# load extensions
1172	$msg->("load extensions");
1173	cf::load_extensions;
1174
1175	# reattach attachments to objects
1176	$msg->("reattach");
1177	_global_reattach;
1178	};	3932	};
1179	$msg->($@) if $@;	3933	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1180		3934	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1181	$msg->("reloaded");
1182	};
1183
1184	sub perl_reload() {
1185	_perl_reload {
1186	warn $_[0];
1187	print "$_[0]\n";
1188	};	3935	};
		3936	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3937	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3938	};
1189	}	3939	}
1190		3940
1191	register "<global>", __PACKAGE__;	3941	{
		3942	# configure IO::AIO
1192		3943
1193	register_command "perl-reload" => sub {	3944	IO::AIO::min_parallel 8;
		3945	IO::AIO::max_poll_time $TICK * 0.1;
		3946	undef $AnyEvent::AIO::WATCHER;
		3947	}
		3948
		3949	my $_log_backtrace;
		3950
		3951	sub _log_backtrace {
1194	my ($who, $arg) = @_;	3952	my ($msg, @addr) = @_;
1195		3953
1196	if ($who->flag (FLAG_WIZ)) {	3954	$msg =~ s/\n//;
1197	_perl_reload {	3955
1198	warn $_[0];	3956	# limit the # of concurrent backtraces
1199	$who->message ($_[0]);	3957	if ($_log_backtrace < 2) {
		3958	++$_log_backtrace;
		3959	my $perl_bt = Carp::longmess $msg;
		3960	async {
		3961	$Coro::current->{desc} = "abt $msg";
		3962
		3963	my @bt = fork_call {
		3964	@addr = map { sprintf "%x", $_ } @addr;
		3965	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3966	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3967	or die "addr2line: $!";
		3968
		3969	my @funcs;
		3970	my @res = <$fh>;
		3971	chomp for @res;
		3972	while (@res) {
		3973	my ($func, $line) = splice @res, 0, 2, ();
		3974	push @funcs, "[$func] $line";
		3975	}
		3976
		3977	@funcs
		3978	};
		3979
		3980	LOG llevInfo, "[ABT] $perl_bt\n";
		3981	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3982	LOG llevInfo, "[ABT] $_\n" for @bt;
		3983	--$_log_backtrace;
1200	};	3984	};
1201	}	3985	} else {
1202	};	3986	LOG llevInfo, "[ABT] $msg\n";
1203		3987	LOG llevInfo, "[ABT] [suppressed]\n";
1204	unshift @INC, $LIBDIR;
1205
1206	$TICK_WATCHER = Event->timer (
1207	prio => 0,
1208	at => $NEXT_TICK || 1,
1209	data => WF_AUTOCANCEL,
1210	cb => sub {
1211	cf::server_tick; # one server iteration
1212
1213	my $NOW = Event::time;
1214	$NEXT_TICK += $TICK;
1215
1216	# if we are delayed by four ticks or more, skip them all
1217	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1218
1219	$TICK_WATCHER->at ($NEXT_TICK);
1220	$TICK_WATCHER->start;
1221	},	3988	}
1222	);	3989	}
1223		3990
1224	IO::AIO::max_poll_time $TICK * 0.2;	3991	# load additional modules
		3992	require "cf/$_.pm" for @EXTRA_MODULES;
		3993	cf::_connect_to_perl_2;
1225		3994
1226	Event->io (fd => IO::AIO::poll_fileno,	3995	END { cf::emergency_save }
1227	poll => 'r',
1228	prio => 5,
1229	data => WF_AUTOCANCEL,
1230	cb => \&IO::AIO::poll_cb);
1231		3996
1232	1	3997	1
1233		3998

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