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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.94 by root, Thu Dec 21 23:02:54 2006 UTC vs.
Revision 1.501 by root, Sat Jan 16 23:27:21 2010 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 ();
		37	use Carp ();
9		38
		39	use Guard ();
		40	use Coro ();
		41	use Coro::State;
		42	use Coro::Handle;
		43	use Coro::EV;
		44	use Coro::AnyEvent;
		45	use Coro::Timer;
		46	use Coro::Signal;
		47	use Coro::Semaphore;
		48	use Coro::SemaphoreSet;
		49	use Coro::AnyEvent;
		50	use Coro::AIO;
		51	use Coro::BDB 1.6;
		52	use Coro::Storable;
		53	use Coro::Util ();
		54
		55	use JSON::XS 2.01 ();
		56	use BDB ();
		57	use Data::Dumper;
		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	}	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	};
78		271
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	272	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	273	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	274	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	275	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	276	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		277	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
84	@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)
85		279
86	# 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
87	# within the Safe compartment.	281	# within the Safe compartment.
88	for my $pkg (qw(	282	for my $pkg (qw(
89	cf::global	283	cf::global cf::attachable
90	cf::object cf::object::player	284	cf::object cf::object::player
91	cf::client cf::player	285	cf::client cf::player
92	cf::arch cf::living	286	cf::arch cf::living
		287	cf::map cf::mapspace
93	cf::map cf::party cf::region	288	cf::party cf::region
94	)) {	289	)) {
95	no strict 'refs';
96	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	290	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
97	}	291	}
98		292
99	$Event::DIED = sub {	293	$EV::DIED = sub {
100	warn "error in event callback: @_";	294	Carp::cluck "error in event callback: @_";
101	};	295	};
102		296
103	my %ext_pkg;	297	#############################################################################
104	my @exts;
105	my @hook;
106		298
107	=head2 UTILITY FUNCTIONS	299	=head2 UTILITY FUNCTIONS
108		300
109	=over 4	301	=over 4
110		302
111	=cut	303	=item dumpval $ref
112		304
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	305	=cut
114		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
115	=item $ref = cf::from_json $json	326	=item $ref = cf::decode_json $json
116		327
117	Converts a JSON string into the corresponding perl data structure.	328	Converts a JSON string into the corresponding perl data structure.
118		329
119	=cut
120
121	sub from_json($) {
122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
123	JSON::Syck::Load $_[0]
124	}
125
126	=item $json = cf::to_json $ref	330	=item $json = cf::encode_json $ref
127		331
128	Converts a perl data structure into its JSON representation.	332	Converts a perl data structure into its JSON representation.
129		333
130	=cut	334	=cut
131		335
132	sub to_json($) {	336	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	337
134	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 });
135	}	747	}
136		748
137	=back	749	=back
138		750
139	=cut	751	=cut
140		752
141	#############################################################################	753	#############################################################################
142		754
143	=head2 ATTACHABLE OBJECTS	755	=head2 ATTACHABLE OBJECTS
144		756
145	Many objects in crossfire are so-called attachable objects. That means you can	757	Many objects in deliantra are so-called attachable objects. That means you can
146	attach callbacks/event handlers (a collection of which is called an "attachment")	758	attach callbacks/event handlers (a collection of which is called an "attachment")
147	to it. All such attachable objects support the following methods.	759	to it. All such attachable objects support the following methods.
148		760
149	In the following description, CLASS can be any of C<global>, C<object>	761	In the following description, CLASS can be any of C<global>, C<object>
150	C<player>, C<client> or C<map> (i.e. the attachable objects in	762	C<player>, C<client> or C<map> (i.e. the attachable objects in
151	crossfire+).	763	Deliantra).
152		764
153	=over 4	765	=over 4
154		766
155	=item $attachable->attach ($attachment, key => $value...)	767	=item $attachable->attach ($attachment, key => $value...)
156		768
…		…
200	=item cf::CLASS::attachment $name, ...	812	=item cf::CLASS::attachment $name, ...
201		813
202	Register an attachment by C<$name> through which attachable objects of the	814	Register an attachment by C<$name> through which attachable objects of the
203	given CLASS can refer to this attachment.	815	given CLASS can refer to this attachment.
204		816
205	Some classes such as crossfire maps and objects can specify attachments	817	Some classes such as deliantra maps and objects can specify attachments
206	that are attached at load/instantiate time, thus the need for a name.	818	that are attached at load/instantiate time, thus the need for a name.
207		819
208	These calls expect any number of the following handler/hook descriptions:	820	These calls expect any number of the following handler/hook descriptions:
209		821
210	=over 4	822	=over 4
…		…
249	my ($self, $victim) = @_;	861	my ($self, $victim) = @_;
250	...	862	...
251	}	863	}
252	}	864	}
253		865
		866	=item $attachable->valid
		867
		868	Just because you have a perl object does not mean that the corresponding
		869	C-level object still exists. If you try to access an object that has no
		870	valid C counterpart anymore you get an exception at runtime. This method
		871	can be used to test for existence of the C object part without causing an
		872	exception.
		873
254	=cut	874	=cut
255		875
256	# the following variables are defined in .xs and must not be re-created	876	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	877	our @CB_GLOBAL = (); # registry for all global events
		878	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	879	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	880	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	881	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	882	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	883	our @CB_MAP = ();
263		884
264	my %attachment;	885	my %attachment;
		886
		887	sub cf::attachable::thawer_merge {
		888	# simply override everything except _meta
		889	local $_[0]{_meta};
		890	%{$_[0]} = %{$_[1]};
		891	}
265		892
266	sub _attach_cb($$$$) {	893	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	894	my ($registry, $event, $prio, $cb) = @_;
268		895
269	use sort 'stable';	896	use sort 'stable';
…		…
272		899
273	@{$registry->[$event]} = sort	900	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	901	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	902	@{$registry->[$event] || []}, $cb;
276	}	903	}
		904
		905	# hack
		906	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		907
278	# attach handles attaching event callbacks	908	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	909	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	910	# registry (== where the callback attaches to).
281	sub _attach {	911	sub _attach {
…		…
283		913
284	my $object_type;	914	my $object_type;
285	my $prio = 0;	915	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	916	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		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
288	while (@arg) {	923	while (@arg) {
289	my $type = shift @arg;	924	my $type = shift @arg;
290		925
291	if ($type eq "prio") {	926	if ($type eq "prio") {
292	$prio = shift @arg;	927	$prio = shift @arg;
…		…
296	$registry = $CB_TYPE[$object_type] ||= [];	931	$registry = $CB_TYPE[$object_type] ||= [];
297		932
298	} elsif ($type eq "subtype") {	933	} elsif ($type eq "subtype") {
299	defined $object_type or Carp::croak "subtype specified without type";	934	defined $object_type or Carp::croak "subtype specified without type";
300	my $object_subtype = shift @arg;	935	my $object_subtype = shift @arg;
301	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	936	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
302		937
303	} elsif ($type eq "package") {	938	} elsif ($type eq "package") {
304	my $pkg = shift @arg;	939	my $pkg = shift @arg;
305		940
306	while (my ($name, $id) = each %cb_id) {	941	while (my ($name, $id) = each %cb_id) {
…		…
335	_attach $registry, $klass, @attach;	970	_attach $registry, $klass, @attach;
336	}	971	}
337		972
338	$obj->{$name} = \%arg;	973	$obj->{$name} = \%arg;
339	} else {	974	} else {
340	warn "object uses attachment '$name' that is not available, postponing.\n";	975	warn "object uses attachment '$name' which is not available, postponing.\n";
341	}	976	}
342		977
343	$obj->{_attachment}{$name} = undef;	978	$obj->{_attachment}{$name} = undef;
344	}	979	}
345		980
…		…
347	if (ref $_[0]) {	982	if (ref $_[0]) {
348	_object_attach @_;	983	_object_attach @_;
349	} else {	984	} else {
350	_attach shift->_attach_registry, @_;	985	_attach shift->_attach_registry, @_;
351	}	986	}
		987	_recalc_want;
352	};	988	};
353		989
354	# all those should be optimised	990	# all those should be optimised
355	sub cf::attachable::detach {	991	sub cf::attachable::detach {
356	my ($obj, $name) = @_;	992	my ($obj, $name) = @_;
…		…
359	delete $obj->{_attachment}{$name};	995	delete $obj->{_attachment}{$name};
360	reattach ($obj);	996	reattach ($obj);
361	} else {	997	} else {
362	Carp::croak "cannot, currently, detach class attachments";	998	Carp::croak "cannot, currently, detach class attachments";
363	}	999	}
		1000	_recalc_want;
364	};	1001	};
365		1002
366	sub cf::attachable::attached {	1003	sub cf::attachable::attached {
367	my ($obj, $name) = @_;	1004	my ($obj, $name) = @_;
368		1005
369	exists $obj->{_attachment}{$name}	1006	exists $obj->{_attachment}{$name}
370	}	1007	}
371		1008
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	1009	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	1010	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	1011	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	1012	(\\\@CB_$klass, KLASS_$klass)
376	}	1013	}
377		1014
…		…
383	";	1020	";
384	die if $@;	1021	die if $@;
385	}	1022	}
386		1023
387	our $override;	1024	our $override;
388	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1025	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
389		1026
390	sub override {	1027	sub override {
391	$override = 1;	1028	$override = 1;
392	@invoke_results = ();	1029	@INVOKE_RESULTS = (@_);
393	}	1030	}
394		1031
395	sub do_invoke {	1032	sub do_invoke {
396	my $event = shift;	1033	my $event = shift;
397	my $callbacks = shift;	1034	my $callbacks = shift;
398		1035
399	@invoke_results = ();	1036	@INVOKE_RESULTS = ();
400		1037
401	local $override;	1038	local $override;
402		1039
403	for (@$callbacks) {	1040	for (@$callbacks) {
404	eval { &{$_->[1]} };	1041	eval { &{$_->[1]} };
…		…
413	}	1050	}
414		1051
415	0	1052	0
416	}	1053	}
417		1054
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1055	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
419		1056
420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
421
422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
423
424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	1057	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		1058
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	1059	Generate an object-specific event with the given arguments.
429		1060
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	1061	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override	1062	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	1063	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
441
442	Attachable objects includes objects, players, clients and maps.
443
444	=over 4
445
446	=item $object->valid
447
448	Just because you have a perl object does not mean that the corresponding
449	C-level object still exists. If you try to access an object that has no
450	valid C counterpart anymore you get an exception at runtime. This method
451	can be used to test for existence of the C object part without causing an
452	exception.
453		1064
454	=back	1065	=back
455		1066
456	=cut	1067	=cut
457		1068
458	#############################################################################	1069	#############################################################################
459	# object support	1070	# object support
460		1071
461	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 {
462	my ($obj, $data) = @_;	1106	my ($ob1, $ob2) = @_;
463		1107
464	$data = from_json $data;	1108	++$SLOW_MERGES;#d#
465		1109
466	for (@$data) {	1110	# we do the slow way here
467	my ($name, $args) = @$_;	1111	return _object_equal $ob1, $ob2
468
469	$obj->attach ($name, %{$args || {} });
470	}
471	}	1112	}
472		1113
473	# basically do the same as instantiate, without calling instantiate
474	sub reattach {	1114	sub reattach {
		1115	# basically do the same as instantiate, without calling instantiate
475	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
476	my $registry = $obj->registry;	1121	my $registry = $obj->registry;
477		1122
478	@$registry = ();	1123	@$registry = ();
479		1124
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1125	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	1134	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	1135	}
491	}	1136	}
492	}	1137	}
493		1138
494	sub object_freezer_save {	1139	cf::attachable->attach (
495	my ($filename, $rdata, $objs) = @_;
496
497	if (length $$rdata) {
498	warn sprintf "saving %s (%d,%d)\n",
499	$filename, length $$rdata, scalar @$objs;
500
501	if (open my $fh, ">:raw", "$filename~") {
502	chmod SAVE_MODE, $fh;
503	syswrite $fh, $$rdata;
504	close $fh;
505
506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
509	close $fh;
510	rename "$filename.pst~", "$filename.pst";
511	} else {
512	unlink "$filename.pst";
513	}
514
515	rename "$filename~", $filename;
516	} else {
517	warn "FATAL: $filename~: $!\n";
518	}
519	} else {
520	unlink $filename;
521	unlink "$filename.pst";
522	}
523	}
524
525	sub object_freezer_as_string {
526	my ($rdata, $objs) = @_;
527
528	use Data::Dumper;
529
530	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	1140	prio => -1000000,
		1141	on_instantiate => sub {
		1142	my ($obj, $data) = @_;
		1143
		1144	$data = decode_json $data;
		1145
		1146	for (@$data) {
		1147	my ($name, $args) = @$_;
		1148
		1149	$obj->attach ($name, %{$args || {} });
		1150	}
		1151	},
		1152	on_reattach => \&reattach,
554	on_clone => sub {	1153	on_clone => sub {
555	my ($src, $dst) = @_;	1154	my ($src, $dst) = @_;
556		1155
557	@{$dst->registry} = @{$src->registry};	1156	@{$dst->registry} = @{$src->registry};
558		1157
…		…
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	1160	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	1161	if exists $src->{_attachment};
563	},	1162	},
564	);	1163	);
565		1164
		1165	sub object_freezer_save {
		1166	my ($filename, $rdata, $objs) = @_;
		1167
		1168	sync_job {
		1169	if (length $$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
		1249
566	#############################################################################	1250	#############################################################################
567	# command handling &c	1251	# command handling &c
568		1252
569	=item cf::register_command $name => \&callback($ob,$args);	1253	=item cf::register_command $name => \&callback($ob,$args);
570		1254
…		…
582	push @{ $COMMAND{$name} }, [$caller, $cb];	1266	push @{ $COMMAND{$name} }, [$caller, $cb];
583	}	1267	}
584		1268
585	=item cf::register_extcmd $name => \&callback($pl,$packet);	1269	=item cf::register_extcmd $name => \&callback($pl,$packet);
586		1270
587	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.
588		1276
589	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
590	called.	1278	called.
591		1279
		1280	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1281
		1282	Register a callback for execution when the client sends an (asynchronous)
		1283	exticmd packet. Exti commands are processed by the server as soon as they
		1284	are received, i.e. out of order w.r.t. other commands. The first argument
		1285	is a client socket. Exti commands can be received anytime, even before
		1286	log-in.
		1287
		1288	If the callback returns something, it is sent back as if reply was being
		1289	called.
		1290
592	=cut	1291	=cut
593		1292
594	sub register_extcmd {	1293	sub register_extcmd {
595	my ($name, $cb) = @_;	1294	my ($name, $cb) = @_;
596		1295
597	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";
599
600	$EXTCMD{$name} = [$cb, $caller];	1296	$EXTCMD{$name} = $cb;
601	}	1297	}
		1298
		1299	sub register_exticmd {
		1300	my ($name, $cb) = @_;
		1301
		1302	$EXTICMD{$name} = $cb;
		1303	}
		1304
		1305	use File::Glob ();
602		1306
603	cf::player->attach (	1307	cf::player->attach (
604	on_command => sub {	1308	on_command => sub {
605	my ($pl, $name, $params) = @_;	1309	my ($pl, $name, $params) = @_;
606		1310
…		…
614	cf::override;	1318	cf::override;
615	},	1319	},
616	on_extcmd => sub {	1320	on_extcmd => sub {
617	my ($pl, $buf) = @_;	1321	my ($pl, $buf) = @_;
618		1322
619	my $msg = eval { from_json $buf };	1323	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
620		1324
621	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
622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1333	if (my $cb = $EXTCMD{$type}) {
623	if (my %reply = $cb->[0]->($pl, $msg)) {	1334	@reply = $cb->($pl, @payload);
624	$pl->ext_reply ($msg->{msgid}, %reply);
625	}
626	}	1335	}
		1336
		1337	$pl->ext_reply ($reply, @reply)
		1338	if $reply;
		1339
627	} else {	1340	} else {
628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1341	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
629	}	1342	}
630		1343
631	cf::override;	1344	cf::override;
632	},	1345	},
633	);	1346	);
634		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
635	sub register {	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	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1791
		1792	sub thawer_merge {
636	my ($base, $pkg) = @_;	1793	my ($self, $merge) = @_;
637		1794
638	#TODO	1795	# we have to keep some variables in memory intact
639	}	1796	local $self->{path};
		1797	local $self->{load_path};
640		1798
641	sub load_extension {	1799	$self->SUPER::thawer_merge ($merge);
		1800	}
		1801
		1802	sub normalise {
642	my ($path) = @_;	1803	my ($path, $base) = @_;
643		1804
644	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1805	$path = "$path"; # make sure its a string
645	my $base = $1;
646	my $pkg = $1;
647	$pkg =~ s/[^[:word:]]/_/g;
648	$pkg = "ext::$pkg";
649		1806
650	warn "loading '$path' into '$pkg'\n";	1807	$path =~ s/\.map$//;
651		1808
652	open my $fh, "<:utf8", $path	1809	# map plan:
653	or die "$path: $!";	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
654		1817
655	my $source =	1818	$path =~ s/$PATH_SEP/\//go;
656	"package $pkg; use strict; use utf8;\n"
657	. "#line 1 \"$path\"\n{\n"
658	. (do { local $/; <$fh> })
659	. "\n};\n1";
660		1819
661	eval $source	1820	# treat it as relative path if it starts with
662	or die $@ ? "$path: $@\n"	1821	# something that looks reasonable
663	: "extension disabled.\n";	1822	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1823	$base or Carp::carp "normalise called with relative path and no base: '$path'";
664		1824
665	push @exts, $pkg;	1825	$base =~ s{[^/]+/?$}{};
666	$ext_pkg{$base} = $pkg;	1826	$path = "$base/$path";
667
668	# no strict 'refs';
669	# @{"$pkg\::ISA"} = ext::;
670
671	register $base, $pkg;
672	}
673
674	sub unload_extension {
675	my ($pkg) = @_;
676
677	warn "removing extension $pkg\n";
678
679	# remove hooks
680	#TODO
681	# for my $idx (0 .. $#PLUGIN_EVENT) {
682	# delete $hook[$idx]{$pkg};
683	# }	1827	}
684		1828
685	# remove commands	1829	for ($path) {
686	for my $name (keys %COMMAND) {	1830	redo if s{//}{/};
687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1831	redo if s{/\.?/}{/};
		1832	redo if s{/[^/]+/\.\./}{/};
		1833	}
688		1834
689	if (@cb) {	1835	$path
690	$COMMAND{$name} = \@cb;	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;
691	} else {	1968	} else {
692	delete $COMMAND{$name};	1969	$self->load_header_orig
693	}	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
694	}	1980	1
		1981	}
695		1982
696	# remove extcmds	1983	sub find;
697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1984	sub find {
698	delete $EXTCMD{$name};	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} = $map
		2011	}
		2012	}
		2013
		2014	sub pre_load { }
		2015	#sub post_load { } # XS
		2016
		2017	sub load {
		2018	my ($self) = @_;
		2019
		2020	local $self->{deny_reset} = 1; # loading can take a long time
		2021
		2022	my $path = $self->{path};
		2023
699	}	2024	{
		2025	my $guard = cf::lock_acquire "map_data:$path";
700		2026
701	if (my $cb = $pkg->can ("unload")) {	2027	return unless $self->valid;
702	eval {	2028	return unless $self->in_memory == cf::MAP_SWAPPED;
703	$cb->($pkg);	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	$f->resolve_delayed_derefs;
		2052	}
704	1	2053	}
705	} or warn "$pkg unloaded, but with errors: $@";	2054	}
706	}
707		2055
708	Symbol::delete_package $pkg;	2056	$f->resolve_delayed_derefs;
709	}
710		2057
711	sub load_extensions {	2058	cf::cede_to_tick;
712	for my $ext (<$LIBDIR/*.ext>) {	2059	# now do the right thing for maps
713	next unless -r $ext;	2060	$self->link_multipart_objects;
714	eval {	2061	$self->difficulty ($self->estimate_difficulty)
715	load_extension $ext;	2062	unless $self->difficulty;
716	1	2063	cf::cede_to_tick;
717	} or warn "$ext not loaded: $@";
718	}
719	}
720		2064
721	#############################################################################	2065	unless ($self->{deny_activate}) {
722	# load/save/clean perl data associated with a map	2066	$self->decay_objects;
		2067	$self->fix_auto_apply;
		2068	$self->update_buttons;
		2069	cf::cede_to_tick;
		2070	$self->activate;
		2071	}
723		2072
724	*cf::mapsupport::on_clean = sub {	2073	$self->{last_save} = $cf::RUNTIME;
		2074	$self->last_access ($cf::RUNTIME);
		2075
		2076	$self->in_memory (cf::MAP_ACTIVE);
		2077	}
		2078
		2079	$self->post_load;
		2080	}
		2081
		2082	sub customise_for {
		2083	my ($self, $ob) = @_;
		2084
		2085	return find "~" . $ob->name . "/" . $self->{path}
		2086	if $self->per_player;
		2087
		2088	# return find "?party/" . $ob->name . "/" . $self->{path}
		2089	# if $self->per_party;
		2090
		2091	$self
		2092	}
		2093
		2094	# find and load all maps in the 3x3 area around a map
		2095	sub load_neighbours {
725	my ($map) = @_;	2096	my ($map) = @_;
726		2097
727	my $path = $map->tmpname;	2098	my @neigh; # diagonal neighbours
728	defined $path or return;
729		2099
730	unlink "$path.pst";	2100	for (0 .. 3) {
731	};	2101	my $neigh = $map->tile_path ($_)
		2102	or next;
		2103	$neigh = find $neigh, $map
		2104	or next;
		2105	$neigh->load;
732		2106
733	cf::map->attach (prio => -10000, package => cf::mapsupport::);	2107	push @neigh,
		2108	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2109	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2110	}
734		2111
735	#############################################################################	2112	for (grep defined $_->[0], @neigh) {
736	# load/save perl data associated with player->ob objects	2113	my ($path, $origin) = @$_;
737		2114	my $neigh = find $path, $origin
738	sub all_objects(@) {	2115	or next;
739	@_, map all_objects ($_->inv), @_	2116	$neigh->load;
		2117	}
740	}	2118	}
741		2119
742	# TODO: compatibility cruft, remove when no longer needed	2120	sub find_sync {
743	cf::player->attach (	2121	my ($path, $origin) = @_;
744	on_load => sub {
745	my ($pl, $path) = @_;
746		2122
747	for my $o (all_objects $pl->ob) {	2123	cf::sync_job { find $path, $origin }
748	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2124	}
749	$o->set_ob_key_value ("_perl_data");
750		2125
751	%$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};
752	}	2159	}
753	}	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);
754	},	2198	}
755	);	2199	}
756		2200
757	#############################################################################	2201	sub swap_out {
		2202	my ($self) = @_;
758		2203
759	=head2 CORE EXTENSIONS	2204	# save first because save cedes
		2205	$self->save;
760		2206
761	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	=item cf::map::static_maps
		2347
		2348	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2349	file in the shared directory excluding F</styles> and F</editor>). May
		2350	block.
		2351
		2352	=cut
		2353
		2354	sub static_maps() {
		2355	my @dirs = "";
		2356	my @maps;
		2357
		2358	while (@dirs) {
		2359	my $dir = shift @dirs;
		2360
		2361	next if $dir eq "/styles" || $dir eq "/editor";
		2362
		2363	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2364	or return;
		2365
		2366	for (@$files) {
		2367	s/\.map$// or next;
		2368	utf8::decode $_;
		2369	push @maps, "$dir/$_";
		2370	}
		2371
		2372	push @dirs, map "$dir/$_", @$dirs;
		2373	}
		2374
		2375	\@maps
		2376	}
		2377
		2378	=back
		2379
		2380	=head3 cf::object
		2381
		2382	=cut
		2383
		2384	package cf::object;
762		2385
763	=over 4	2386	=over 4
764		2387
765	=item cf::player::exists $login	2388	=item $ob->inv_recursive
766		2389
767	Returns true when the given account exists.	2390	Returns the inventory of the object I<and> their inventories, recursively,
		2391	but I<not> the object itself.
768		2392
769	=cut	2393	=cut
770		2394
771	sub cf::player::exists($) {	2395	sub inv_recursive_;
772	cf::player::find $_[0]	2396	sub inv_recursive_ {
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2397	map { $_, inv_recursive_ $_->inv } @_
774	}	2398	}
		2399
		2400	sub inv_recursive {
		2401	inv_recursive_ inv $_[0]
		2402	}
		2403
		2404	=item $ref = $ob->ref
		2405
		2406	Creates and returns a persistent reference to an object that can be stored as a string.
		2407
		2408	=item $ob = cf::object::deref ($refstring)
		2409
		2410	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2411	even if the object actually exists. May block.
		2412
		2413	=cut
		2414
		2415	sub deref {
		2416	my ($ref) = @_;
		2417
		2418	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2419	my ($uuid, $name) = ($1, $2);
		2420	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2421	or return;
		2422	$pl->ob->uuid eq $uuid
		2423	or return;
		2424
		2425	$pl->ob
		2426	} else {
		2427	warn "$ref: cannot resolve object reference\n";
		2428	undef
		2429	}
		2430	}
		2431
		2432	package cf;
		2433
		2434	=back
		2435
		2436	=head3 cf::object::player
		2437
		2438	=over 4
775		2439
776	=item $player_object->reply ($npc, $msg[, $flags])	2440	=item $player_object->reply ($npc, $msg[, $flags])
777		2441
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2442	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
779	can be C<undef>. Does the right thing when the player is currently in a	2443	can be C<undef>. Does the right thing when the player is currently in a
780	dialogue with the given NPC character.	2444	dialogue with the given NPC character.
781		2445
782	=cut	2446	=cut
783		2447
		2448	our $SAY_CHANNEL = {
		2449	id => "say",
		2450	title => "Map",
		2451	reply => "say ",
		2452	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2453	};
		2454
		2455	our $CHAT_CHANNEL = {
		2456	id => "chat",
		2457	title => "Chat",
		2458	reply => "chat ",
		2459	tooltip => "Player chat and shouts, global to the server.",
		2460	};
		2461
784	# rough implementation of a future "reply" method that works	2462	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	2463	# with dialog boxes.
		2464	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	2465	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	2466	my ($self, $npc, $msg, $flags) = @_;
788		2467
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2468	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		2469
791	if ($self->{record_replies}) {	2470	if ($self->{record_replies}) {
792	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2471	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2472
793	} else {	2473	} else {
		2474	my $pl = $self->contr;
		2475
		2476	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2477	my $dialog = $pl->{npc_dialog};
		2478	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2479
		2480	} else {
794	$msg = $npc->name . " says: $msg" if $npc;	2481	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	2482	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2483	}
796	}	2484	}
797	}	2485	}
798		2486
799	=item $player->ext_reply ($msgid, $msgtype, %msg)	2487	=item $object->send_msg ($channel, $msg, $color, [extra...])
800		2488
801	Sends an ext reply to the player.
802
803	=cut	2489	=cut
804		2490
805	sub cf::player::ext_reply($$$%) {	2491	sub cf::object::send_msg {
806	my ($self, $id, %msg) = @_;	2492	my $pl = shift->contr
807		2493	or return;
808	$msg{msgid} = $id;	2494	$pl->send_msg (@_);
809
810	$self->send ("ext " . to_json \%msg);
811	}	2495	}
812		2496
813	=item $player_object->may ("access")	2497	=item $player_object->may ("access")
814		2498
815	Returns wether the given player is authorized to access resource "access"	2499	Returns wether the given player is authorized to access resource "access"
…		…
824	(ref $cf::CFG{"may_$access"}	2508	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2509	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	2510	: $cf::CFG{"may_$access"})
827	}	2511	}
828		2512
829	=cut	2513	=item $player_object->enter_link
830		2514
831	#############################################################################	2515	Freezes the player and moves him/her to a special map (C<{link}>).
		2516
		2517	The player should be reasonably safe there for short amounts of time (e.g.
		2518	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2519	though, as the palyer cannot control the character while it is on the link
		2520	map.
		2521
		2522	Will never block.
		2523
		2524	=item $player_object->leave_link ($map, $x, $y)
		2525
		2526	Moves the player out of the special C<{link}> map onto the specified
		2527	map. If the map is not valid (or omitted), the player will be moved back
		2528	to the location he/she was before the call to C<enter_link>, or, if that
		2529	fails, to the emergency map position.
		2530
		2531	Might block.
		2532
		2533	=cut
		2534
		2535	sub link_map {
		2536	unless ($LINK_MAP) {
		2537	$LINK_MAP = cf::map::find "{link}"
		2538	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2539	$LINK_MAP->load;
		2540	}
		2541
		2542	$LINK_MAP
		2543	}
		2544
		2545	sub cf::object::player::enter_link {
		2546	my ($self) = @_;
		2547
		2548	$self->deactivate_recursive;
		2549
		2550	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2551
		2552	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2553	if $self->map && $self->map->{path} ne "{link}";
		2554
		2555	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2556	}
		2557
		2558	sub cf::object::player::leave_link {
		2559	my ($self, $map, $x, $y) = @_;
		2560
		2561	return unless $self->contr->active;
		2562
		2563	my $link_pos = delete $self->{_link_pos};
		2564
		2565	unless ($map) {
		2566	# restore original map position
		2567	($map, $x, $y) = @{ $link_pos || [] };
		2568	$map = cf::map::find $map;
		2569
		2570	unless ($map) {
		2571	($map, $x, $y) = @$EMERGENCY_POSITION;
		2572	$map = cf::map::find $map
		2573	or die "FATAL: cannot load emergency map\n";
		2574	}
		2575	}
		2576
		2577	($x, $y) = (-1, -1)
		2578	unless (defined $x) && (defined $y);
		2579
		2580	# use -1 or undef as default coordinates, not 0, 0
		2581	($x, $y) = ($map->enter_x, $map->enter_y)
		2582	if $x <= 0 && $y <= 0;
		2583
		2584	$map->load;
		2585	$map->load_neighbours;
		2586
		2587	return unless $self->contr->active;
		2588
		2589	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2590	$self->enter_map ($map, $x, $y);
		2591
		2592	# only activate afterwards, to support waiting in hooks
		2593	$self->activate_recursive;
		2594	}
		2595
		2596	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2597
		2598	Moves the player to the given map-path and coordinates by first freezing
		2599	her, loading and preparing them map, calling the provided $check callback
		2600	that has to return the map if sucecssful, and then unfreezes the player on
		2601	the new (success) or old (failed) map position. In either case, $done will
		2602	be called at the end of this process.
		2603
		2604	Note that $check will be called with a potentially non-loaded map, so if
		2605	it needs a loaded map it has to call C<< ->load >>.
		2606
		2607	=cut
		2608
		2609	our $GOTOGEN;
		2610
		2611	sub cf::object::player::goto {
		2612	my ($self, $path, $x, $y, $check, $done) = @_;
		2613
		2614	# do generation counting so two concurrent goto's will be executed in-order
		2615	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2616
		2617	$self->enter_link;
		2618
		2619	(async {
		2620	$Coro::current->{desc} = "player::goto $path $x $y";
		2621
		2622	# *tag paths override both path and x|y
		2623	if ($path =~ /^\*(.*)$/) {
		2624	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2625	my $ob = $obs[rand @obs];
		2626
		2627	# see if we actually can go there
		2628	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2629	$ob = $obs[rand @obs];
		2630	} else {
		2631	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2632	}
		2633	# else put us there anyways for now #d#
		2634
		2635	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2636	} else {
		2637	($path, $x, $y) = (undef, undef, undef);
		2638	}
		2639	}
		2640
		2641	my $map = eval {
		2642	my $map = defined $path ? cf::map::find $path : undef;
		2643
		2644	if ($map) {
		2645	$map = $map->customise_for ($self);
		2646	$map = $check->($map) if $check && $map;
		2647	} else {
		2648	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2649	}
		2650
		2651	$map
		2652	};
		2653
		2654	if ($@) {
		2655	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2656	LOG llevError | logBacktrace, Carp::longmess $@;
		2657	}
		2658
		2659	if ($gen == $self->{_goto_generation}) {
		2660	delete $self->{_goto_generation};
		2661	$self->leave_link ($map, $x, $y);
		2662	}
		2663
		2664	$done->() if $done;
		2665	})->prio (1);
		2666	}
		2667
		2668	=item $player_object->enter_exit ($exit_object)
		2669
		2670	=cut
		2671
		2672	sub parse_random_map_params {
		2673	my ($spec) = @_;
		2674
		2675	my $rmp = { # defaults
		2676	xsize => (cf::rndm 15, 40),
		2677	ysize => (cf::rndm 15, 40),
		2678	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2679	#layout => string,
		2680	};
		2681
		2682	for (split /\n/, $spec) {
		2683	my ($k, $v) = split /\s+/, $_, 2;
		2684
		2685	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2686	}
		2687
		2688	$rmp
		2689	}
		2690
		2691	sub prepare_random_map {
		2692	my ($exit) = @_;
		2693
		2694	# all this does is basically replace the /! path by
		2695	# a new random map path (?random/...) with a seed
		2696	# that depends on the exit object
		2697
		2698	my $rmp = parse_random_map_params $exit->msg;
		2699
		2700	if ($exit->map) {
		2701	$rmp->{region} = $exit->region->name;
		2702	$rmp->{origin_map} = $exit->map->path;
		2703	$rmp->{origin_x} = $exit->x;
		2704	$rmp->{origin_y} = $exit->y;
		2705
		2706	$exit->map->touch;
		2707	}
		2708
		2709	$rmp->{random_seed} ||= $exit->random_seed;
		2710
		2711	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2712	my $md5 = Digest::MD5::md5_hex $data;
		2713	my $meta = "$RANDOMDIR/$md5.meta";
		2714
		2715	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2716	aio_write $fh, 0, (length $data), $data, 0;
		2717	undef $fh;
		2718	aio_rename "$meta~", $meta;
		2719
		2720	my $slaying = "?random/$md5";
		2721
		2722	if ($exit->valid) {
		2723	$exit->slaying ("?random/$md5");
		2724	$exit->msg (undef);
		2725	}
		2726	}
		2727	}
		2728
		2729	sub cf::object::player::enter_exit {
		2730	my ($self, $exit) = @_;
		2731
		2732	return unless $self->type == cf::PLAYER;
		2733
		2734	$self->enter_link;
		2735
		2736	(async {
		2737	$Coro::current->{desc} = "enter_exit";
		2738
		2739	unless (eval {
		2740	$self->deactivate_recursive; # just to be sure
		2741
		2742	# random map handling
		2743	{
		2744	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2745
		2746	prepare_random_map $exit
		2747	if $exit->slaying eq "/!";
		2748	}
		2749
		2750	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2751	my $x = $exit->stats->hp;
		2752	my $y = $exit->stats->sp;
		2753
		2754	$self->goto ($map, $x, $y);
		2755
		2756	# if exit is damned, update players death & WoR home-position
		2757	$self->contr->savebed ($map, $x, $y)
		2758	if $exit->flag (cf::FLAG_DAMNED);
		2759
		2760	1
		2761	}) {
		2762	$self->message ("Something went wrong deep within the deliantra server. "
		2763	. "I'll try to bring you back to the map you were before. "
		2764	. "Please report this to the dungeon master!",
		2765	cf::NDI_UNIQUE | cf::NDI_RED);
		2766
		2767	warn "ERROR in enter_exit: $@";
		2768	$self->leave_link;
		2769	}
		2770	})->prio (1);
		2771	}
		2772
		2773	=head3 cf::client
		2774
		2775	=over 4
		2776
		2777	=item $client->send_drawinfo ($text, $flags)
		2778
		2779	Sends a drawinfo packet to the client. Circumvents output buffering so
		2780	should not be used under normal circumstances.
		2781
		2782	=cut
		2783
		2784	sub cf::client::send_drawinfo {
		2785	my ($self, $text, $flags) = @_;
		2786
		2787	utf8::encode $text;
		2788	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2789	}
		2790
		2791	=item $client->send_big_packet ($pkt)
		2792
		2793	Like C<send_packet>, but tries to compress large packets, and fragments
		2794	them as required.
		2795
		2796	=cut
		2797
		2798	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2799
		2800	sub cf::client::send_big_packet {
		2801	my ($self, $pkt) = @_;
		2802
		2803	# try lzf for large packets
		2804	$pkt = "lzf " . Compress::LZF::compress $pkt
		2805	if 1024 <= length $pkt and $self->{can_lzf};
		2806
		2807	# split very large packets
		2808	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2809	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2810	$pkt = "frag";
		2811	}
		2812
		2813	$self->send_packet ($pkt);
		2814	}
		2815
		2816	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2817
		2818	Send a drawinfo or msg packet to the client, formatting the msg for the
		2819	client if neccessary. C<$type> should be a string identifying the type of
		2820	the message, with C<log> being the default. If C<$color> is negative, suppress
		2821	the message unless the client supports the msg packet.
		2822
		2823	=cut
		2824
		2825	# non-persistent channels (usually the info channel)
		2826	our %CHANNEL = (
		2827	"c/motd" => {
		2828	id => "infobox",
		2829	title => "MOTD",
		2830	reply => undef,
		2831	tooltip => "The message of the day",
		2832	},
		2833	"c/identify" => {
		2834	id => "infobox",
		2835	title => "Identify",
		2836	reply => undef,
		2837	tooltip => "Items recently identified",
		2838	},
		2839	"c/examine" => {
		2840	id => "infobox",
		2841	title => "Examine",
		2842	reply => undef,
		2843	tooltip => "Signs and other items you examined",
		2844	},
		2845	"c/shopinfo" => {
		2846	id => "infobox",
		2847	title => "Shop Info",
		2848	reply => undef,
		2849	tooltip => "What your bargaining skill tells you about the shop",
		2850	},
		2851	"c/book" => {
		2852	id => "infobox",
		2853	title => "Book",
		2854	reply => undef,
		2855	tooltip => "The contents of a note or book",
		2856	},
		2857	"c/lookat" => {
		2858	id => "infobox",
		2859	title => "Look",
		2860	reply => undef,
		2861	tooltip => "What you saw there",
		2862	},
		2863	"c/who" => {
		2864	id => "infobox",
		2865	title => "Players",
		2866	reply => undef,
		2867	tooltip => "Shows players who are currently online",
		2868	},
		2869	"c/body" => {
		2870	id => "infobox",
		2871	title => "Body Parts",
		2872	reply => undef,
		2873	tooltip => "Shows which body parts you posess and are available",
		2874	},
		2875	"c/statistics" => {
		2876	id => "infobox",
		2877	title => "Statistics",
		2878	reply => undef,
		2879	tooltip => "Shows your primary statistics",
		2880	},
		2881	"c/skills" => {
		2882	id => "infobox",
		2883	title => "Skills",
		2884	reply => undef,
		2885	tooltip => "Shows your experience per skill and item power",
		2886	},
		2887	"c/shopitems" => {
		2888	id => "infobox",
		2889	title => "Shop Items",
		2890	reply => undef,
		2891	tooltip => "Shows the items currently for sale in this shop",
		2892	},
		2893	"c/resistances" => {
		2894	id => "infobox",
		2895	title => "Resistances",
		2896	reply => undef,
		2897	tooltip => "Shows your resistances",
		2898	},
		2899	"c/pets" => {
		2900	id => "infobox",
		2901	title => "Pets",
		2902	reply => undef,
		2903	tooltip => "Shows information abotu your pets/a specific pet",
		2904	},
		2905	"c/perceiveself" => {
		2906	id => "infobox",
		2907	title => "Perceive Self",
		2908	reply => undef,
		2909	tooltip => "You gained detailed knowledge about yourself",
		2910	},
		2911	"c/uptime" => {
		2912	id => "infobox",
		2913	title => "Uptime",
		2914	reply => undef,
		2915	tooltip => "How long the server has been running since last restart",
		2916	},
		2917	"c/mapinfo" => {
		2918	id => "infobox",
		2919	title => "Map Info",
		2920	reply => undef,
		2921	tooltip => "Information related to the maps",
		2922	},
		2923	"c/party" => {
		2924	id => "party",
		2925	title => "Party",
		2926	reply => "gsay ",
		2927	tooltip => "Messages and chat related to your party",
		2928	},
		2929	"c/death" => {
		2930	id => "death",
		2931	title => "Death",
		2932	reply => undef,
		2933	tooltip => "Reason for and more info about your most recent death",
		2934	},
		2935	"c/say" => $SAY_CHANNEL,
		2936	"c/chat" => $CHAT_CHANNEL,
		2937	);
		2938
		2939	sub cf::client::send_msg {
		2940	my ($self, $channel, $msg, $color, @extra) = @_;
		2941
		2942	$msg = $self->pl->expand_cfpod ($msg)
		2943	unless $color & cf::NDI_VERBATIM;
		2944
		2945	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2946
		2947	# check predefined channels, for the benefit of C
		2948	if ($CHANNEL{$channel}) {
		2949	$channel = $CHANNEL{$channel};
		2950
		2951	$self->ext_msg (channel_info => $channel);
		2952	$channel = $channel->{id};
		2953
		2954	} elsif (ref $channel) {
		2955	# send meta info to client, if not yet sent
		2956	unless (exists $self->{channel}{$channel->{id}}) {
		2957	$self->{channel}{$channel->{id}} = $channel;
		2958	$self->ext_msg (channel_info => $channel);
		2959	}
		2960
		2961	$channel = $channel->{id};
		2962	}
		2963
		2964	return unless @extra || length $msg;
		2965
		2966	# default colour, mask it out
		2967	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2968	if $color & cf::NDI_DEF;
		2969
		2970	my $pkt = "msg "
		2971	. $self->{json_coder}->encode (
		2972	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2973	);
		2974
		2975	$self->send_big_packet ($pkt);
		2976	}
		2977
		2978	=item $client->ext_msg ($type, @msg)
		2979
		2980	Sends an ext event to the client.
		2981
		2982	=cut
		2983
		2984	sub cf::client::ext_msg($$@) {
		2985	my ($self, $type, @msg) = @_;
		2986
		2987	if ($self->extcmd == 2) {
		2988	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2989	} elsif ($self->extcmd == 1) { # TODO: remove
		2990	push @msg, msgtype => "event_$type";
		2991	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2992	}
		2993	}
		2994
		2995	=item $client->ext_reply ($msgid, @msg)
		2996
		2997	Sends an ext reply to the client.
		2998
		2999	=cut
		3000
		3001	sub cf::client::ext_reply($$@) {
		3002	my ($self, $id, @msg) = @_;
		3003
		3004	if ($self->extcmd == 2) {
		3005	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3006	} elsif ($self->extcmd == 1) {
		3007	#TODO: version 1, remove
		3008	unshift @msg, msgtype => "reply", msgid => $id;
		3009	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3010	}
		3011	}
		3012
		3013	=item $success = $client->query ($flags, "text", \&cb)
		3014
		3015	Queues a query to the client, calling the given callback with
		3016	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3017	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3018
		3019	Queries can fail, so check the return code. Or don't, as queries will
		3020	become reliable at some point in the future.
		3021
		3022	=cut
		3023
		3024	sub cf::client::query {
		3025	my ($self, $flags, $text, $cb) = @_;
		3026
		3027	return unless $self->state == ST_PLAYING
		3028	|| $self->state == ST_SETUP
		3029	|| $self->state == ST_CUSTOM;
		3030
		3031	$self->state (ST_CUSTOM);
		3032
		3033	utf8::encode $text;
		3034	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3035
		3036	$self->send_packet ($self->{query_queue}[0][0])
		3037	if @{ $self->{query_queue} } == 1;
		3038
		3039	1
		3040	}
		3041
		3042	cf::client->attach (
		3043	on_connect => sub {
		3044	my ($ns) = @_;
		3045
		3046	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3047	},
		3048	on_reply => sub {
		3049	my ($ns, $msg) = @_;
		3050
		3051	# this weird shuffling is so that direct followup queries
		3052	# get handled first
		3053	my $queue = delete $ns->{query_queue}
		3054	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3055
		3056	(shift @$queue)->[1]->($msg);
		3057	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3058
		3059	push @{ $ns->{query_queue} }, @$queue;
		3060
		3061	if (@{ $ns->{query_queue} } == @$queue) {
		3062	if (@$queue) {
		3063	$ns->send_packet ($ns->{query_queue}[0][0]);
		3064	} else {
		3065	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3066	}
		3067	}
		3068	},
		3069	on_exticmd => sub {
		3070	my ($ns, $buf) = @_;
		3071
		3072	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3073
		3074	if (ref $msg) {
		3075	my ($type, $reply, @payload) =
		3076	"ARRAY" eq ref $msg
		3077	? @$msg
		3078	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3079
		3080	my @reply;
		3081
		3082	if (my $cb = $EXTICMD{$type}) {
		3083	@reply = $cb->($ns, @payload);
		3084	}
		3085
		3086	$ns->ext_reply ($reply, @reply)
		3087	if $reply;
		3088
		3089	} else {
		3090	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3091	}
		3092
		3093	cf::override;
		3094	},
		3095	);
		3096
		3097	=item $client->async (\&cb)
		3098
		3099	Create a new coroutine, running the specified callback. The coroutine will
		3100	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3101	or loss of connection).
		3102
		3103	=cut
		3104
		3105	sub cf::client::async {
		3106	my ($self, $cb) = @_;
		3107
		3108	my $coro = &Coro::async ($cb);
		3109
		3110	$coro->on_destroy (sub {
		3111	delete $self->{_coro}{$coro+0};
		3112	});
		3113
		3114	$self->{_coro}{$coro+0} = $coro;
		3115
		3116	$coro
		3117	}
		3118
		3119	cf::client->attach (
		3120	on_destroy => sub {
		3121	my ($ns) = @_;
		3122
		3123	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3124	},
		3125	);
		3126
		3127	=back
		3128
832		3129
833	=head2 SAFE SCRIPTING	3130	=head2 SAFE SCRIPTING
834		3131
835	Functions that provide a safe environment to compile and execute	3132	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	3133	snippets of perl code without them endangering the safety of the server
…		…
843	our $safe = new Safe "safe";	3140	our $safe = new Safe "safe";
844	our $safe_hole = new Safe::Hole;	3141	our $safe_hole = new Safe::Hole;
845		3142
846	$SIG{FPE} = 'IGNORE';	3143	$SIG{FPE} = 'IGNORE';
847		3144
848	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3145	$safe->permit_only (Opcode::opset qw(
		3146	:base_core :base_mem :base_orig :base_math :base_loop
		3147	grepstart grepwhile mapstart mapwhile
		3148	sort time
		3149	));
849		3150
850	# here we export the classes and methods available to script code	3151	# here we export the classes and methods available to script code
851		3152
852	=pod	3153	=pod
853		3154
854	The following fucntions and emthods are available within a safe environment:	3155	The following functions and methods are available within a safe environment:
855		3156
856	cf::object contr pay_amount pay_player map	3157	cf::object
		3158	contr pay_amount pay_player map x y force_find force_add destroy
		3159	insert remove name archname title slaying race decrease split
		3160	value
		3161
857	cf::object::player player	3162	cf::object::player
858	cf::player peaceful	3163	player
859	cf::map trigger	3164
		3165	cf::player
		3166	peaceful
		3167
		3168	cf::map
		3169	trigger
860		3170
861	=cut	3171	=cut
862		3172
863	for (	3173	for (
864	["cf::object" => qw(contr pay_amount pay_player map)],	3174	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3175	insert remove inv nrof name archname title slaying race
		3176	decrease split destroy change_exp value msg lore send_msg)],
865	["cf::object::player" => qw(player)],	3177	["cf::object::player" => qw(player)],
866	["cf::player" => qw(peaceful)],	3178	["cf::player" => qw(peaceful send_msg)],
867	["cf::map" => qw(trigger)],	3179	["cf::map" => qw(trigger)],
868	) {	3180	) {
869	no strict 'refs';	3181	no strict 'refs';
870	my ($pkg, @funs) = @$_;	3182	my ($pkg, @funs) = @$_;
871	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3183	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
…		…
889		3201
890	my $qcode = $code;	3202	my $qcode = $code;
891	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3203	$qcode =~ s/"/‟/g; # not allowed in #line filenames
892	$qcode =~ s/\n/\\n/g;	3204	$qcode =~ s/\n/\\n/g;
893		3205
		3206	%vars = (_dummy => 0) unless %vars;
		3207
		3208	my @res;
894	local $_;	3209	local $_;
895	local @safe::cf::_safe_eval_args = values %vars;
896		3210
897	my $eval =	3211	my $eval =
898	"do {\n"	3212	"do {\n"
899	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3213	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
900	. "#line 0 \"{$qcode}\"\n"	3214	. "#line 0 \"{$qcode}\"\n"
901	. $code	3215	. $code
902	. "\n}"	3216	. "\n}"
903	;	3217	;
904		3218
		3219	if ($CFG{safe_eval}) {
905	sub_generation_inc;	3220	sub_generation_inc;
		3221	local @safe::cf::_safe_eval_args = values %vars;
906	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3222	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
907	sub_generation_inc;	3223	sub_generation_inc;
		3224	} else {
		3225	local @cf::_safe_eval_args = values %vars;
		3226	@res = wantarray ? eval eval : scalar eval $eval;
		3227	}
908		3228
909	if ($@) {	3229	if ($@) {
910	warn "$@";	3230	warn "$@";
911	warn "while executing safe code '$code'\n";	3231	warn "while executing safe code '$code'\n";
912	warn "with arguments " . (join " ", %vars) . "\n";	3232	warn "with arguments " . (join " ", %vars) . "\n";
…		…
931	=cut	3251	=cut
932		3252
933	sub register_script_function {	3253	sub register_script_function {
934	my ($fun, $cb) = @_;	3254	my ($fun, $cb) = @_;
935		3255
936	no strict 'refs';	3256	$fun = "safe::$fun" if $CFG{safe_eval};
937	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3257	*$fun = $safe_hole->wrap ($cb);
938	}	3258	}
939		3259
940	=back	3260	=back
941		3261
942	=cut	3262	=cut
943		3263
944	#############################################################################	3264	#############################################################################
		3265	# the server's init and main functions
945		3266
946	=head2 EXTENSION DATABASE SUPPORT	3267	sub load_facedata($) {
		3268	my ($path) = @_;
947		3269
948	Crossfire maintains a very simple database for extension use. It can	3270	# HACK to clear player env face cache, we need some signal framework
949	currently store anything that can be serialised using Storable, which	3271	# for this (global event?)
950	excludes objects.	3272	%ext::player_env::MUSIC_FACE_CACHE = ();
951		3273
952	The parameter C<$family> should best start with the name of the extension	3274	my $enc = JSON::XS->new->utf8->canonical->relaxed;
953	using it, it should be unique.
954		3275
955	=over 4	3276	warn "loading facedata from $path\n";
956		3277
957	=item $hashref = cf::db_get $family	3278	my $facedata;
		3279	0 < aio_load $path, $facedata
		3280	or die "$path: $!";
958		3281
959	Return a hashref for use by the extension C<$family>, which can be	3282	$facedata = Coro::Storable::thaw $facedata;
960	modified. After modifications, you have to call C<cf::db_dirty> or
961	C<cf::db_sync>.
962		3283
963	=item $value = cf::db_get $family => $key	3284	$facedata->{version} == 2
		3285	or cf::cleanup "$path: version mismatch, cannot proceed.";
964		3286
965	Returns a single value from the database	3287	# patch in the exptable
		3288	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3289	$facedata->{resource}{"res/exp_table"} = {
		3290	type => FT_RSRC,
		3291	data => $exp_table,
		3292	hash => (Digest::MD5::md5 $exp_table),
		3293	};
		3294	cf::cede_to_tick;
966		3295
967	=item cf::db_put $family => $hashref	3296	{
		3297	my $faces = $facedata->{faceinfo};
968		3298
969	Stores the given family hashref into the database. Updates are delayed, if	3299	while (my ($face, $info) = each %$faces) {
970	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3300	my $idx = (cf::face::find $face) || cf::face::alloc $face;
971		3301
972	=item cf::db_put $family => $key => $value	3302	cf::face::set_visibility $idx, $info->{visibility};
		3303	cf::face::set_magicmap $idx, $info->{magicmap};
		3304	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3305	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
973		3306
974	Stores the given C<$value> in the family hash. Updates are delayed, if you	3307	cf::cede_to_tick;
975	want the data to be synced to disk immediately, use C<cf::db_sync>.	3308	}
976		3309
977	=item cf::db_dirty	3310	while (my ($face, $info) = each %$faces) {
		3311	next unless $info->{smooth};
978		3312
979	Marks the database as dirty, to be updated at a later time.	3313	my $idx = cf::face::find $face
		3314	or next;
980		3315
981	=item cf::db_sync	3316	if (my $smooth = cf::face::find $info->{smooth}) {
		3317	cf::face::set_smooth $idx, $smooth;
		3318	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3319	} else {
		3320	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3321	}
982		3322
983	Immediately write the database to disk I<if it is dirty>.	3323	cf::cede_to_tick;
		3324	}
		3325	}
984		3326
985	=cut	3327	{
		3328	my $anims = $facedata->{animinfo};
986		3329
987	our $DB;	3330	while (my ($anim, $info) = each %$anims) {
		3331	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3332	cf::cede_to_tick;
		3333	}
		3334
		3335	cf::anim::invalidate_all; # d'oh
		3336	}
		3337
		3338	{
		3339	my $res = $facedata->{resource};
		3340
		3341	while (my ($name, $info) = each %$res) {
		3342	if (defined $info->{type}) {
		3343	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3344
		3345	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3346	cf::face::set_type $idx, $info->{type};
		3347	} else {
		3348	$RESOURCE{$name} = $info;
		3349	}
		3350
		3351	cf::cede_to_tick;
		3352	}
		3353	}
		3354
		3355	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3356
		3357	1
		3358	}
		3359
		3360	cf::global->attach (on_resource_update => sub {
		3361	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3362	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3363
		3364	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3365	my $sound = $soundconf->{compat}[$_]
		3366	or next;
		3367
		3368	my $face = cf::face::find "sound/$sound->[1]";
		3369	cf::sound::set $sound->[0] => $face;
		3370	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3371	}
		3372
		3373	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3374	my $face = cf::face::find "sound/$v";
		3375	cf::sound::set $k => $face;
		3376	}
		3377	}
		3378	});
		3379
		3380	register_exticmd fx_want => sub {
		3381	my ($ns, $want) = @_;
		3382
		3383	while (my ($k, $v) = each %$want) {
		3384	$ns->fx_want ($k, $v);
		3385	}
		3386	};
		3387
		3388	sub load_resource_file($) {
		3389	my $guard = lock_acquire "load_resource_file";
		3390
		3391	my $status = load_resource_file_ $_[0];
		3392	get_slot 0.1, 100;
		3393	cf::arch::commit_load;
		3394
		3395	$status
		3396	}
		3397
		3398	sub reload_regions {
		3399	# HACK to clear player env face cache, we need some signal framework
		3400	# for this (global event?)
		3401	%ext::player_env::MUSIC_FACE_CACHE = ();
		3402
		3403	load_resource_file "$MAPDIR/regions"
		3404	or die "unable to load regions file\n";
		3405
		3406	for (cf::region::list) {
		3407	$_->{match} = qr/$_->{match}/
		3408	if exists $_->{match};
		3409	}
		3410	}
		3411
		3412	sub reload_facedata {
		3413	load_facedata "$DATADIR/facedata"
		3414	or die "unable to load facedata\n";
		3415	}
		3416
		3417	sub reload_archetypes {
		3418	load_resource_file "$DATADIR/archetypes"
		3419	or die "unable to load archetypes\n";
		3420	}
		3421
		3422	sub reload_treasures {
		3423	load_resource_file "$DATADIR/treasures"
		3424	or die "unable to load treasurelists\n";
		3425	}
		3426
		3427	sub reload_resources {
		3428	warn "reloading resource files...\n";
		3429
		3430	reload_facedata;
		3431	reload_archetypes;
		3432	reload_regions;
		3433	reload_treasures;
		3434
		3435	warn "finished reloading resource files\n";
		3436	}
		3437
		3438	sub reload_config {
		3439	warn "reloading config file...\n";
		3440
		3441	open my $fh, "<:utf8", "$CONFDIR/config"
		3442	or return;
		3443
		3444	local $/;
		3445	*CFG = YAML::XS::Load scalar <$fh>;
		3446
		3447	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3448
		3449	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3450	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3451
		3452	if (exists $CFG{mlockall}) {
		3453	eval {
		3454	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3455	and die "WARNING: m(un)lockall failed: $!\n";
		3456	};
		3457	warn $@ if $@;
		3458	}
		3459
		3460	warn "finished reloading resource files\n";
		3461	}
		3462
		3463	sub pidfile() {
		3464	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3465	or die "$PIDFILE: $!";
		3466	flock $fh, &Fcntl::LOCK_EX
		3467	or die "$PIDFILE: flock: $!";
		3468	$fh
		3469	}
		3470
		3471	# make sure only one server instance is running at any one time
		3472	sub atomic {
		3473	my $fh = pidfile;
		3474
		3475	my $pid = <$fh>;
		3476	kill 9, $pid if $pid > 0;
		3477
		3478	seek $fh, 0, 0;
		3479	print $fh $$;
		3480	}
		3481
		3482	sub main_loop {
		3483	warn "EV::loop starting\n";
		3484	if (1) {
		3485	EV::loop;
		3486	}
		3487	warn "EV::loop returned\n";
		3488	goto &main_loop unless $REALLY_UNLOOP;
		3489	}
		3490
		3491	sub main {
		3492	cf::init_globals; # initialise logging
		3493
		3494	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3495	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3496	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3497	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3498
		3499	cf::init_experience;
		3500	cf::init_anim;
		3501	cf::init_attackmess;
		3502	cf::init_dynamic;
		3503
		3504	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3505
		3506	# we must not ever block the main coroutine
		3507	local $Coro::idle = sub {
		3508	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3509	(async {
		3510	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3511	EV::loop EV::LOOP_ONESHOT;
		3512	})->prio (Coro::PRIO_MAX);
		3513	};
		3514
		3515	evthread_start IO::AIO::poll_fileno;
		3516
		3517	cf::sync_job {
		3518	cf::load_settings;
		3519	cf::load_materials;
		3520
		3521	reload_resources;
		3522	reload_config;
		3523	db_init;
		3524
		3525	cf::init_uuid;
		3526	cf::init_signals;
		3527	cf::init_commands;
		3528	cf::init_skills;
		3529
		3530	cf::init_beforeplay;
		3531
		3532	atomic;
		3533
		3534	load_extensions;
		3535
		3536	utime time, time, $RUNTIMEFILE;
		3537
		3538	# no (long-running) fork's whatsoever before this point(!)
		3539	use POSIX ();
		3540	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3541
		3542	(pop @POST_INIT)->(0) while @POST_INIT;
		3543	};
		3544
		3545	main_loop;
		3546	}
		3547
		3548	#############################################################################
		3549	# initialisation and cleanup
		3550
		3551	# install some emergency cleanup handlers
		3552	BEGIN {
		3553	our %SIGWATCHER = ();
		3554	for my $signal (qw(INT HUP TERM)) {
		3555	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3556	cf::cleanup "SIG$signal";
		3557	};
		3558	}
		3559	}
		3560
		3561	sub write_runtime_sync {
		3562	# first touch the runtime file to show we are still running:
		3563	# the fsync below can take a very very long time.
		3564
		3565	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3566
		3567	my $guard = cf::lock_acquire "write_runtime";
		3568
		3569	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3570	or return;
		3571
		3572	my $value = $cf::RUNTIME + 90 + 10;
		3573	# 10 is the runtime save interval, for a monotonic clock
		3574	# 60 allows for the watchdog to kill the server.
		3575
		3576	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3577	and return;
		3578
		3579	# always fsync - this file is important
		3580	aio_fsync $fh
		3581	and return;
		3582
		3583	# touch it again to show we are up-to-date
		3584	aio_utime $fh, undef, undef;
		3585
		3586	close $fh
		3587	or return;
		3588
		3589	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3590	and return;
		3591
		3592	warn "runtime file written.\n";
		3593
		3594	1
		3595	}
		3596
		3597	our $uuid_lock;
		3598	our $uuid_skip;
		3599
		3600	sub write_uuid_sync($) {
		3601	$uuid_skip ||= $_[0];
		3602
		3603	return if $uuid_lock;
		3604	local $uuid_lock = 1;
		3605
		3606	my $uuid = "$LOCALDIR/uuid";
		3607
		3608	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3609	or return;
		3610
		3611	my $value = uuid_seq uuid_cur;
		3612
		3613	unless ($value) {
		3614	warn "cowardly refusing to write zero uuid value!\n";
		3615	return;
		3616	}
		3617
		3618	my $value = uuid_str $value + $uuid_skip;
		3619	$uuid_skip = 0;
		3620
		3621	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3622	and return;
		3623
		3624	# always fsync - this file is important
		3625	aio_fsync $fh
		3626	and return;
		3627
		3628	close $fh
		3629	or return;
		3630
		3631	aio_rename "$uuid~", $uuid
		3632	and return;
		3633
		3634	warn "uuid file written ($value).\n";
		3635
		3636	1
		3637
		3638	}
		3639
		3640	sub write_uuid($$) {
		3641	my ($skip, $sync) = @_;
		3642
		3643	$sync ? write_uuid_sync $skip
		3644	: async { write_uuid_sync $skip };
		3645	}
		3646
		3647	sub emergency_save() {
		3648	my $freeze_guard = cf::freeze_mainloop;
		3649
		3650	warn "emergency_perl_save: enter\n";
		3651
		3652	cf::sync_job {
		3653	# this is a trade-off: we want to be very quick here, so
		3654	# save all maps without fsync, and later call a global sync
		3655	# (which in turn might be very very slow)
		3656	local $USE_FSYNC = 0;
		3657
		3658	# use a peculiar iteration method to avoid tripping on perl
		3659	# refcount bugs in for. also avoids problems with players
		3660	# and maps saved/destroyed asynchronously.
		3661	warn "emergency_perl_save: begin player save\n";
		3662	for my $login (keys %cf::PLAYER) {
		3663	my $pl = $cf::PLAYER{$login} or next;
		3664	$pl->valid or next;
		3665	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3666	$pl->save;
		3667	}
		3668	warn "emergency_perl_save: end player save\n";
		3669
		3670	warn "emergency_perl_save: begin map save\n";
		3671	for my $path (keys %cf::MAP) {
		3672	my $map = $cf::MAP{$path} or next;
		3673	$map->valid or next;
		3674	$map->save;
		3675	}
		3676	warn "emergency_perl_save: end map save\n";
		3677
		3678	warn "emergency_perl_save: begin database checkpoint\n";
		3679	BDB::db_env_txn_checkpoint $DB_ENV;
		3680	warn "emergency_perl_save: end database checkpoint\n";
		3681
		3682	warn "emergency_perl_save: begin write uuid\n";
		3683	write_uuid_sync 1;
		3684	warn "emergency_perl_save: end write uuid\n";
		3685	};
		3686
		3687	warn "emergency_perl_save: starting sync()\n";
		3688	IO::AIO::aio_sync sub {
		3689	warn "emergency_perl_save: finished sync()\n";
		3690	};
		3691
		3692	warn "emergency_perl_save: leave\n";
		3693	}
		3694
		3695	sub post_cleanup {
		3696	my ($make_core) = @_;
		3697
		3698	warn Carp::longmess "post_cleanup backtrace"
		3699	if $make_core;
		3700
		3701	my $fh = pidfile;
		3702	unlink $PIDFILE if <$fh> == $$;
		3703	}
		3704
		3705	# a safer delete_package, copied from Symbol
		3706	sub clear_package($) {
		3707	my $pkg = shift;
		3708
		3709	# expand to full symbol table name if needed
		3710	unless ($pkg =~ /^main::.*::$/) {
		3711	$pkg = "main$pkg" if $pkg =~ /^::/;
		3712	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3713	$pkg .= '::' unless $pkg =~ /::$/;
		3714	}
		3715
		3716	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3717	my $stem_symtab = *{$stem}{HASH};
		3718
		3719	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3720	or return;
		3721
		3722	# clear all symbols
		3723	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3724	for my $name (keys %$leaf_symtab) {
		3725	_gv_clear *{"$pkg$name"};
		3726	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3727	}
		3728	warn "cleared package $pkg\n";#d#
		3729	}
		3730
		3731	sub do_reload_perl() {
		3732	# can/must only be called in main
		3733	if ($Coro::current != $Coro::main) {
		3734	warn "can only reload from main coroutine";
		3735	return;
		3736	}
		3737
		3738	return if $RELOAD++;
		3739
		3740	my $t1 = EV::time;
		3741
		3742	while ($RELOAD) {
		3743	warn "reloading...";
		3744
		3745	warn "entering sync_job";
		3746
		3747	cf::sync_job {
		3748	cf::write_runtime_sync; # external watchdog should not bark
		3749	cf::emergency_save;
		3750	cf::write_runtime_sync; # external watchdog should not bark
		3751
		3752	warn "syncing database to disk";
		3753	BDB::db_env_txn_checkpoint $DB_ENV;
		3754
		3755	# if anything goes wrong in here, we should simply crash as we already saved
		3756
		3757	warn "flushing outstanding aio requests";
		3758	while (IO::AIO::nreqs || BDB::nreqs) {
		3759	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3760	}
		3761
		3762	warn "cancelling all extension coros";
		3763	$_->cancel for values %EXT_CORO;
		3764	%EXT_CORO = ();
		3765
		3766	warn "removing commands";
		3767	%COMMAND = ();
		3768
		3769	warn "removing ext/exti commands";
		3770	%EXTCMD = ();
		3771	%EXTICMD = ();
		3772
		3773	warn "unloading/nuking all extensions";
		3774	for my $pkg (@EXTS) {
		3775	warn "... unloading $pkg";
		3776
		3777	if (my $cb = $pkg->can ("unload")) {
		3778	eval {
		3779	$cb->($pkg);
		3780	1
		3781	} or warn "$pkg unloaded, but with errors: $@";
		3782	}
		3783
		3784	warn "... clearing $pkg";
		3785	clear_package $pkg;
		3786	}
		3787
		3788	warn "unloading all perl modules loaded from $LIBDIR";
		3789	while (my ($k, $v) = each %INC) {
		3790	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3791
		3792	warn "... unloading $k";
		3793	delete $INC{$k};
		3794
		3795	$k =~ s/\.pm$//;
		3796	$k =~ s/\//::/g;
		3797
		3798	if (my $cb = $k->can ("unload_module")) {
		3799	$cb->();
		3800	}
		3801
		3802	clear_package $k;
		3803	}
		3804
		3805	warn "getting rid of safe::, as good as possible";
		3806	clear_package "safe::$_"
		3807	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3808
		3809	warn "unloading cf.pm \"a bit\"";
		3810	delete $INC{"cf.pm"};
		3811	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3812
		3813	# don't, removes xs symbols, too,
		3814	# and global variables created in xs
		3815	#clear_package __PACKAGE__;
		3816
		3817	warn "unload completed, starting to reload now";
		3818
		3819	warn "reloading cf.pm";
		3820	require cf;
		3821	cf::_connect_to_perl_1;
		3822
		3823	warn "loading config and database again";
		3824	cf::reload_config;
		3825
		3826	warn "loading extensions";
		3827	cf::load_extensions;
		3828
		3829	if ($REATTACH_ON_RELOAD) {
		3830	warn "reattaching attachments to objects/players";
		3831	_global_reattach; # objects, sockets
		3832	warn "reattaching attachments to maps";
		3833	reattach $_ for values %MAP;
		3834	warn "reattaching attachments to players";
		3835	reattach $_ for values %PLAYER;
		3836	}
		3837
		3838	warn "running post_init jobs";
		3839	(pop @POST_INIT)->(1) while @POST_INIT;
		3840
		3841	warn "leaving sync_job";
		3842
		3843	1
		3844	} or do {
		3845	warn $@;
		3846	cf::cleanup "error while reloading, exiting.";
		3847	};
		3848
		3849	warn "reloaded";
		3850	--$RELOAD;
		3851	}
		3852
		3853	$t1 = EV::time - $t1;
		3854	warn "reload completed in ${t1}s\n";
		3855	};
		3856
		3857	our $RELOAD_WATCHER; # used only during reload
		3858
		3859	sub reload_perl() {
		3860	# doing reload synchronously and two reloads happen back-to-back,
		3861	# coro crashes during coro_state_free->destroy here.
		3862
		3863	$RELOAD_WATCHER ||= cf::async {
		3864	Coro::AIO::aio_wait cache_extensions;
		3865
		3866	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
		3867	do_reload_perl;
		3868	undef $RELOAD_WATCHER;
		3869	};
		3870	};
		3871	}
		3872
		3873	register_command "reload" => sub {
		3874	my ($who, $arg) = @_;
		3875
		3876	if ($who->flag (FLAG_WIZ)) {
		3877	$who->message ("reloading server.");
		3878	async {
		3879	$Coro::current->{desc} = "perl_reload";
		3880	reload_perl;
		3881	};
		3882	}
		3883	};
		3884
		3885	unshift @INC, $LIBDIR;
		3886
		3887	my $bug_warning = 0;
		3888
		3889	our @WAIT_FOR_TICK;
		3890	our @WAIT_FOR_TICK_BEGIN;
		3891
		3892	sub wait_for_tick {
		3893	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		3894
		3895	my $signal = new Coro::Signal;
		3896	push @WAIT_FOR_TICK, $signal;
		3897	$signal->wait;
		3898	}
		3899
		3900	sub wait_for_tick_begin {
		3901	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		3902
		3903	my $signal = new Coro::Signal;
		3904	push @WAIT_FOR_TICK_BEGIN, $signal;
		3905	$signal->wait;
		3906	}
		3907
		3908	sub tick {
		3909	if ($Coro::current != $Coro::main) {
		3910	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3911	unless ++$bug_warning > 10;
		3912	return;
		3913	}
		3914
		3915	cf::server_tick; # one server iteration
		3916
		3917	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3918	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3919	Coro::async_pool {
		3920	$Coro::current->{desc} = "runtime saver";
		3921	write_runtime_sync
		3922	or warn "ERROR: unable to write runtime file: $!";
		3923	};
		3924	}
		3925
		3926	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3927	$sig->send;
		3928	}
		3929	while (my $sig = shift @WAIT_FOR_TICK) {
		3930	$sig->send;
		3931	}
		3932
		3933	$LOAD = ($NOW - $TICK_START) / $TICK;
		3934	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3935
		3936	if (0) {
		3937	if ($NEXT_TICK) {
		3938	my $jitter = $TICK_START - $NEXT_TICK;
		3939	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3940	warn "jitter $JITTER\n";#d#
		3941	}
		3942	}
		3943	}
988		3944
989	{	3945	{
990	my $path = cf::localdir . "/database.pst";	3946	# configure BDB
991		3947
992	sub db_load() {	3948	BDB::min_parallel 8;
993	warn "loading database $path\n";#d# remove later	3949	BDB::max_poll_reqs $TICK * 0.1;
994	$DB = stat $path ? Storable::retrieve $path : { };	3950	$AnyEvent::BDB::WATCHER->priority (1);
995	}
996		3951
997	my $pid;	3952	unless ($DB_ENV) {
		3953	$DB_ENV = BDB::db_env_create;
		3954	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3955	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3956	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3957	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3958	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
998		3959
999	sub db_save() {	3960	cf::sync_job {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;
1006	cf::_exit 0 if defined $pid;
1007	}
1008	}
1009
1010	my $dirty;
1011
1012	sub db_sync() {
1013	db_save if $dirty;
1014	undef $dirty;
1015	}
1016
1017	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1018	db_sync;
1019	});
1020
1021	sub db_dirty() {
1022	$dirty = 1;
1023	$idle->start;
1024	}
1025
1026	sub db_get($;$) {
1027	@_ >= 2
1028	? $DB->{$_[0]}{$_[1]}
1029	: ($DB->{$_[0]} ||= { })
1030	}
1031
1032	sub db_put($$;$) {
1033	if (@_ >= 3) {
1034	$DB->{$_[0]}{$_[1]} = $_[2];
1035	} else {	3961	eval {
1036	$DB->{$_[0]} = $_[1];	3962	BDB::db_env_open
1037	}	3963	$DB_ENV,
1038	db_dirty;	3964	$BDBDIR,
1039	}	3965	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3966	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3967	0666;
1040		3968
1041	cf::global->attach (	3969	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1042	prio => 10000,
1043	on_cleanup => sub {
1044	db_sync;
1045	},
1046	);
1047	}
1048
1049	#############################################################################
1050	# the server's main()
1051
1052	sub cfg_load {
1053	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;
1055
1056	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;
1058	}
1059
1060	sub main {
1061	cfg_load;
1062	db_load;
1063	load_extensions;
1064	Event::loop;
1065	}
1066
1067	#############################################################################
1068	# initialisation
1069
1070	sub _perl_reload(&) {
1071	my ($msg) = @_;
1072
1073	$msg->("reloading...");
1074
1075	eval {
1076	# cancel all watchers
1077	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}
1080
1081	# unload all extensions
1082	for (@exts) {
1083	$msg->("unloading <$_>");
1084	unload_extension $_;
1085	}
1086
1087	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090
1091	$msg->("removing <$k>");
1092	delete $INC{$k};
1093
1094	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;
1096
1097	if (my $cb = $k->can ("unload_module")) {
1098	$cb->();
1099	}	3970	};
1100		3971
1101	Symbol::delete_package $k;	3972	cf::cleanup "db_env_open(db): $@" if $@;
1102	}	3973	};
		3974	}
1103		3975
1104	# sync database to disk	3976	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1105	cf::db_sync;	3977	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1106
1107	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1110
1111	# remove register_script_function callbacks
1112	# TODO
1113
1114	# unload cf.pm "a bit"
1115	delete $INC{"cf.pm"};
1116
1117	# don't, removes xs symbols, too,
1118	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;
1120
1121	# reload cf.pm
1122	$msg->("reloading cf.pm");
1123	require cf;
1124
1125	# load config and database again
1126	cf::cfg_load;
1127	cf::db_load;
1128
1129	# load extensions
1130	$msg->("load extensions");
1131	cf::load_extensions;
1132
1133	# reattach attachments to objects
1134	$msg->("reattach");
1135	_global_reattach;
1136	};	3978	};
1137	$msg->($@) if $@;	3979	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1138		3980	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1139	$msg->("reloaded");
1140	};
1141
1142	sub perl_reload() {
1143	_perl_reload {
1144	warn $_[0];
1145	print "$_[0]\n";
1146	};	3981	};
		3982	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3983	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3984	};
1147	}	3985	}
1148		3986
1149	register "<global>", __PACKAGE__;	3987	{
		3988	# configure IO::AIO
1150		3989
1151	register_command "perl-reload" => sub {	3990	IO::AIO::min_parallel 8;
		3991	IO::AIO::max_poll_time $TICK * 0.1;
		3992	undef $AnyEvent::AIO::WATCHER;
		3993	}
		3994
		3995	my $_log_backtrace;
		3996
		3997	sub _log_backtrace {
1152	my ($who, $arg) = @_;	3998	my ($msg, @addr) = @_;
1153		3999
1154	if ($who->flag (FLAG_WIZ)) {	4000	$msg =~ s/\n//;
1155	_perl_reload {	4001
1156	warn $_[0];	4002	# limit the # of concurrent backtraces
1157	$who->message ($_[0]);	4003	if ($_log_backtrace < 2) {
		4004	++$_log_backtrace;
		4005	my $perl_bt = Carp::longmess $msg;
		4006	async {
		4007	$Coro::current->{desc} = "abt $msg";
		4008
		4009	my @bt = fork_call {
		4010	@addr = map { sprintf "%x", $_ } @addr;
		4011	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4012	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4013	or die "addr2line: $!";
		4014
		4015	my @funcs;
		4016	my @res = <$fh>;
		4017	chomp for @res;
		4018	while (@res) {
		4019	my ($func, $line) = splice @res, 0, 2, ();
		4020	push @funcs, "[$func] $line";
		4021	}
		4022
		4023	@funcs
		4024	};
		4025
		4026	LOG llevInfo, "[ABT] $perl_bt\n";
		4027	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4028	LOG llevInfo, "[ABT] $_\n" for @bt;
		4029	--$_log_backtrace;
1158	};	4030	};
1159	}	4031	} else {
1160	};	4032	LOG llevInfo, "[ABT] $msg\n";
1161		4033	LOG llevInfo, "[ABT] [suppressed]\n";
1162	unshift @INC, $LIBDIR;
1163
1164	$TICK_WATCHER = Event->timer (
1165	prio => 0,
1166	at => $NEXT_TICK || 1,
1167	data => WF_AUTOCANCEL,
1168	cb => sub {
1169	cf::server_tick; # one server iteration
1170
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;
1173
1174	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1176
1177	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;
1179	},	4034	}
1180	);	4035	}
1181		4036
1182	IO::AIO::max_poll_time $TICK * 0.2;	4037	# load additional modules
		4038	require "cf/$_.pm" for @EXTRA_MODULES;
		4039	cf::_connect_to_perl_2;
1183		4040
1184	Event->io (fd => IO::AIO::poll_fileno,	4041	END { cf::emergency_save }
1185	poll => 'r',
1186	prio => 5,
1187	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);
1189		4042
1190	1	4043	1
1191		4044

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