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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.75 by root, Mon Oct 2 00:22:01 2006 UTC vs.
Revision 1.579 by root, Wed Jan 4 03:22:28 2012 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010,2011,2012 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 common::sense;
2		26
3	use Symbol;	27	use Symbol;
4	use List::Util;	28	use List::Util;
5	use Storable;	29	use Socket;
		30	use EV;
6	use Opcode;	31	use Opcode;
7	use Safe;	32	use Safe;
8	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
9		36
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Fcntl;
10	use YAML::Syck ();	57	use YAML::XS ();
		58	use IO::AIO ();
11	use Time::HiRes;	59	use Time::HiRes;
12	use Event;	60	use Compress::LZF;
13	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
14		62
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	63	AnyEvent::detect;
16	$YAML::Syck::ImplicitUnicode = 1;
17		64
18	use strict;	65	# configure various modules to our taste
		66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
19		69
20	_init_vars;	70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
21		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
		82
22	our %COMMAND = ();	83	our %COMMAND = ();
		84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
		87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
23	our @EVENT;	93	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
25		96
26	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
27	our $TICK_WATCHER;	98
		99	our $DATADIR = datadir;
		100	our $LIBDIR = "$DATADIR/ext";
		101	our $PODDIR = "$DATADIR/pod";
		102	our $MAPDIR = "$DATADIR/" . mapdir;
		103
		104	our $LOCALDIR = localdir;
		105	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		106	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		107	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		108	our $RANDOMDIR = "$LOCALDIR/random";
		109	our $BDBDIR = "$LOCALDIR/db";
		110	our $PIDFILE = "$LOCALDIR/pid";
		111	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		112
		113	#our %RESOURCE; # unused
		114
		115	our $OUTPUT_RATE_MIN = 3000;
		116	our $OUTPUT_RATE_MAX = 1000000;
		117
		118	our $MAX_LINKS = 32; # how many chained exits to follow
		119	our $VERBOSE_IO = 1;
		120
		121	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		122	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	our $NEXT_TICK;	123	our $NEXT_TICK;
		124	our $USE_FSYNC = 1; # use fsync to write maps - default on
		125
		126	our $BDB_DEADLOCK_WATCHER;
		127	our $BDB_CHECKPOINT_WATCHER;
		128	our $BDB_TRICKLE_WATCHER;
		129	our $DB_ENV;
		130
		131	our @EXTRA_MODULES = qw(pod match mapscript incloader);
29		132
30	our %CFG;	133	our %CFG;
31		134
		135	our $UPTIME; $UPTIME ||= time;
		136	our $RUNTIME = 0;
		137	our $SERVER_TICK = 0;
		138	our $NOW;
		139
		140	our (%PLAYER, %PLAYER_LOADING); # all users
		141	our (%MAP, %MAP_LOADING ); # all maps
		142	our $LINK_MAP; # the special {link} map, which is always available
		143
		144	# used to convert map paths into valid unix filenames by replacing / by ∕
		145	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		146
		147	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		148	our $LOADAVG; # same thing, but with alpha-smoothing
		149	our $JITTER; # average jitter
		150	our $TICK_START; # for load detecting purposes
		151
		152	our @POST_INIT;
		153
		154	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		155	our $REALLY_UNLOOP; # never set to true, please :)
		156
		157	our $WAIT_FOR_TICK = new Coro::Signal;
		158	our @WAIT_FOR_TICK_BEGIN;
		159
		160	binmode STDOUT;
		161	binmode STDERR;
		162
		163	# read virtual server time, if available
		164	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		165	open my $fh, "<", $RUNTIMEFILE
		166	or die "unable to read $RUNTIMEFILE file: $!";
		167	$RUNTIME = <$fh> + 0.;
		168	}
		169
		170	eval "sub TICK() { $TICK } 1" or die;
		171
		172	mkdir $_
		173	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		174
		175	our $EMERGENCY_POSITION;
		176
		177	sub cf::map::normalise;
		178
		179	sub in_main() {
		180	$Coro::current == $Coro::main
		181	}
		182
32	#############################################################################	183	#############################################################################
33		184
		185	%REFLECT = ();
		186	for (@REFLECT) {
		187	my $reflect = JSON::XS::decode_json $_;
		188	$REFLECT{$reflect->{class}} = $reflect;
		189	}
		190
		191	# this is decidedly evil
		192	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		193
		194	#############################################################################
		195
34	=head2 GLOBAL VARIABLES	196	=head2 GLOBAL VARIABLES
35		197
36	=over 4	198	=over 4
37		199
38	=item $cf::LIBDIR	200	=item $cf::UPTIME
39		201
40	The perl library directory, where extensions and cf-specific modules can	202	The timestamp of the server start (so not actually an "uptime").
41	be found. It will be added to C<@INC> automatically.	203
		204	=item $cf::SERVER_TICK
		205
		206	An unsigned integer that starts at zero when the server is started and is
		207	incremented on every tick.
		208
		209	=item $cf::NOW
		210
		211	The (real) time of the last (current) server tick - updated before and
		212	after tick processing, so this is useful only as a rough "what time is it
		213	now" estimate.
42		214
43	=item $cf::TICK	215	=item $cf::TICK
44		216
45	The interval between server ticks, in seconds.	217	The interval between each server tick, in seconds.
		218
		219	=item $cf::RUNTIME
		220
		221	The time this server has run, starts at 0 and is increased by $cf::TICK on
		222	every server tick.
		223
		224	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		225	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		226	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		227
		228	Various directories - "/etc", read-only install directory, perl-library
		229	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		230	unique-items directory, player file directory, random maps directory and
		231	database environment.
		232
		233	=item $cf::LOADAVG
		234
		235	The current CPU load on the server (alpha-smoothed), as a value between 0
		236	(none) and 1 (overloaded), indicating how much time is spent on processing
		237	objects per tick. Healthy values are < 0.5.
		238
		239	=item $cf::LOAD
		240
		241	The raw value load value from the last tick.
46		242
47	=item %cf::CFG	243	=item %cf::CFG
48		244
49	Configuration for the server, loaded from C</etc/crossfire/config>, or	245	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
50	from wherever your confdir points to.	246	from wherever your confdir points to.
51		247
		248	=item cf::wait_for_tick, cf::wait_for_tick_begin
		249
		250	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		251	returns directly I<after> the tick processing (and consequently, can only wake one thread
		252	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		253
		254	Note that cf::Wait_for_tick will immediately return when the server is not
		255	ticking, making it suitable for small pauses in threads that need to run
		256	when the server is paused. If that is not applicable (i.e. you I<really>
		257	want to wait, use C<$cf::WAIT_FOR_TICK>).
		258
		259	=item $cf::WAIT_FOR_TICK
		260
		261	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		262	variable contains a L<Coro::Signal> that is broadcats after every server
		263	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		264	next server tick.
		265
		266	=cut
		267
		268	sub wait_for_tick();
		269	sub wait_for_tick_begin();
		270
		271	=item @cf::INVOKE_RESULTS
		272
		273	This array contains the results of the last C<invoke ()> call. When
		274	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		275	that call.
		276
		277	=item %cf::REFLECT
		278
		279	Contains, for each (C++) class name, a hash reference with information
		280	about object members (methods, scalars, arrays and flags) and other
		281	metadata, which is useful for introspection.
		282
52	=back	283	=back
53		284
54	=cut	285	=cut
55		286
56	BEGIN {	287	sub error(@) { LOG llevError, join "", @_ }
57	*CORE::GLOBAL::warn = sub {	288	sub warn (@) { LOG llevWarn , join "", @_ }
		289	sub info (@) { LOG llevInfo , join "", @_ }
		290	sub debug(@) { LOG llevDebug, join "", @_ }
		291	sub trace(@) { LOG llevTrace, join "", @_ }
		292
		293	$Coro::State::WARNHOOK = sub {
58	my $msg = join "", @_;	294	my $msg = join "", @_;
		295
59	$msg .= "\n"	296	$msg .= "\n"
60	unless $msg =~ /\n$/;	297	unless $msg =~ /\n$/;
61		298
62	print STDERR "cfperl: $msg";	299	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
63	LOG llevError, "cfperl: $msg";
64	};
65	}
66		300
		301	LOG llevWarn, $msg;
		302	};
		303
		304	$Coro::State::DIEHOOK = sub {
		305	return unless $^S eq 0; # "eq", not "=="
		306
		307	error Carp::longmess $_[0];
		308
		309	if (in_main) {#d#
		310	error "DIEHOOK called in main context, Coro bug?\n";#d#
		311	return;#d#
		312	}#d#
		313
		314	# kill coroutine otherwise
		315	Coro::terminate
		316	};
		317
		318	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		319	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		320	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		321	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		322	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		323	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
67	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	324	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
68		325
69	# we bless all objects into (empty) derived classes to force a method lookup	326	# we bless all objects into (empty) derived classes to force a method lookup
70	# within the Safe compartment.	327	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	328	for my $pkg (qw(
72	no strict 'refs';	329	cf::global cf::attachable
		330	cf::object cf::object::player
		331	cf::client cf::player
		332	cf::arch cf::living
		333	cf::map cf::mapspace
		334	cf::party cf::region
		335	)) {
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	336	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	337	}
75		338
76	$Event::DIED = sub {	339	$EV::DIED = sub {
77	warn "error in event callback: @_";	340	Carp::cluck "error in event callback: @_";
78	};	341	};
79		342
80	my %ext_pkg;	343	#############################################################################
81	my @exts;	344
82	my @hook;	345	sub fork_call(&@);
83	my %command;	346	sub get_slot($;$$);
84	my %extcmd;	347
		348	#############################################################################
85		349
86	=head2 UTILITY FUNCTIONS	350	=head2 UTILITY FUNCTIONS
87		351
88	=over 4	352	=over 4
89		353
90	=cut	354	=item dumpval $ref
91		355
92	use JSON::Syck (); # TODO# replace by JSON::PC once working	356	=cut
93		357
		358	sub dumpval {
		359	eval {
		360	local $SIG{__DIE__};
		361	my $d;
		362	if (1) {
		363	$d = new Data::Dumper([$_[0]], ["*var"]);
		364	$d->Terse(1);
		365	$d->Indent(2);
		366	$d->Quotekeys(0);
		367	$d->Useqq(1);
		368	#$d->Bless(...);
		369	$d->Seen($_[1]) if @_ > 1;
		370	$d = $d->Dump();
		371	}
		372	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		373	$d
		374	} || "[unable to dump $_[0]: '$@']";
		375	}
		376
		377	=item $scalar = load_file $path
		378
		379	Loads the given file from path and returns its contents. Croaks on error
		380	and can block.
		381
		382	=cut
		383
		384	sub load_file($) {
		385	0 <= aio_load $_[0], my $data
		386	or Carp::croak "$_[0]: $!";
		387
		388	$data
		389	}
		390
94	=item $ref = cf::from_json $json	391	=item $ref = cf::decode_json $json
95		392
96	Converts a JSON string into the corresponding perl data structure.	393	Converts a JSON string into the corresponding perl data structure.
97		394
98	=cut
99
100	sub from_json($) {
101	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
102	JSON::Syck::Load $_[0]
103	}
104
105	=item $json = cf::to_json $ref	395	=item $json = cf::encode_json $ref
106		396
107	Converts a perl data structure into its JSON representation.	397	Converts a perl data structure into its JSON representation.
108		398
109	=cut	399	=cut
110		400
111	sub to_json($) {	401	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	402
113	JSON::Syck::Dump $_[0]	403	sub encode_json($) { $json_coder->encode ($_[0]) }
		404	sub decode_json($) { $json_coder->decode ($_[0]) }
		405
		406	=item $ref = cf::decode_storable $scalar
		407
		408	Same as Coro::Storable::thaw, so blocks.
		409
		410	=cut
		411
		412	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		413
		414	=item $ref = cf::decode_yaml $scalar
		415
		416	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		417
		418	=cut
		419
		420	sub decode_yaml($) {
		421	fork_call { YAML::XS::Load $_[0] } @_
		422	}
		423
		424	=item $scalar = cf::unlzf $scalar
		425
		426	Same as Compress::LZF::compress, but takes server ticks into account, so
		427	blocks.
		428
		429	=cut
		430
		431	sub unlzf($) {
		432	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		433	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		434	Compress::LZF::decompress $_[0]
		435	}
		436
		437	=item cf::post_init { BLOCK }
		438
		439	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		440	but I<before> the server starts ticking again.
		441
		442	The codeblock will have a single boolean argument to indicate whether this
		443	is a reload or not.
		444
		445	=cut
		446
		447	sub post_init(&) {
		448	push @POST_INIT, shift;
		449	}
		450
		451	sub _post_init {
		452	trace "running post_init jobs";
		453
		454	# run them in parallel...
		455
		456	my @join;
		457
		458	while () {
		459	push @join, map &Coro::async ($_, 0), @POST_INIT;
		460	@POST_INIT = ();
		461
		462	@join or last;
		463
		464	(pop @join)->join;
		465	}
		466	}
		467
		468	=item cf::lock_wait $string
		469
		470	Wait until the given lock is available. See cf::lock_acquire.
		471
		472	=item my $lock = cf::lock_acquire $string
		473
		474	Wait until the given lock is available and then acquires it and returns
		475	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		476	for example when the coroutine gets canceled), the lock is automatically
		477	returned.
		478
		479	Locks are *not* recursive, locking from the same coro twice results in a
		480	deadlocked coro.
		481
		482	Lock names should begin with a unique identifier (for example, cf::map::find
		483	uses map_find and cf::map::load uses map_load).
		484
		485	=item $locked = cf::lock_active $string
		486
		487	Return true if the lock is currently active, i.e. somebody has locked it.
		488
		489	=cut
		490
		491	our $LOCKS = new Coro::SemaphoreSet;
		492
		493	sub lock_wait($) {
		494	$LOCKS->wait ($_[0]);
		495	}
		496
		497	sub lock_acquire($) {
		498	$LOCKS->guard ($_[0])
		499	}
		500
		501	sub lock_active($) {
		502	$LOCKS->count ($_[0]) < 1
		503	}
		504
		505	sub freeze_mainloop {
		506	tick_inhibit_inc;
		507
		508	&Guard::guard (\&tick_inhibit_dec);
		509	}
		510
		511	=item cf::periodic $interval, $cb
		512
		513	Like EV::periodic, but randomly selects a starting point so that the actions
		514	get spread over time.
		515
		516	=cut
		517
		518	sub periodic($$) {
		519	my ($interval, $cb) = @_;
		520
		521	my $start = rand List::Util::min 180, $interval;
		522
		523	EV::periodic $start, $interval, 0, $cb
		524	}
		525
		526	=item cf::get_slot $time[, $priority[, $name]]
		527
		528	Allocate $time seconds of blocking CPU time at priority C<$priority>
		529	(default: 0): This call blocks and returns only when you have at least
		530	C<$time> seconds of cpu time till the next tick. The slot is only valid
		531	till the next cede.
		532
		533	Background jobs should use a priority les than zero, interactive jobs
		534	should use 100 or more.
		535
		536	The optional C<$name> can be used to identify the job to run. It might be
		537	used for statistical purposes and should identify the same time-class.
		538
		539	Useful for short background jobs.
		540
		541	=cut
		542
		543	our @SLOT_QUEUE;
		544	our $SLOT_QUEUE;
		545	our $SLOT_DECAY = 0.9;
		546
		547	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		548	$SLOT_QUEUE = Coro::async {
		549	$Coro::current->desc ("timeslot manager");
		550
		551	my $signal = new Coro::Signal;
		552	my $busy;
		553
		554	while () {
		555	next_job:
		556
		557	my $avail = cf::till_tick;
		558
		559	for (0 .. $#SLOT_QUEUE) {
		560	if ($SLOT_QUEUE[$_][0] <= $avail) {
		561	$busy = 0;
		562	my $job = splice @SLOT_QUEUE, $_, 1, ();
		563	$job->[2]->send;
		564	Coro::cede;
		565	goto next_job;
		566	} else {
		567	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		568	}
		569	}
		570
		571	if (@SLOT_QUEUE) {
		572	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		573	$WAIT_FOR_TICK->wait;
		574	} else {
		575	$busy = 0;
		576	Coro::schedule;
		577	}
		578	}
		579	};
		580
		581	sub get_slot($;$$) {
		582	return if tick_inhibit || $Coro::current == $Coro::main;
		583
		584	my ($time, $pri, $name) = @_;
		585
		586	$time = clamp $time, 0.01, $TICK * .6;
		587
		588	my $sig = new Coro::Signal;
		589
		590	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		591	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		592	$SLOT_QUEUE->ready;
		593	$sig->wait;
		594	}
		595
		596	=item cf::async { BLOCK }
		597
		598	Currently the same as Coro::async_pool, meaning you cannot use
		599	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		600	thing you are allowed to do is call C<prio> on it.
		601
		602	=cut
		603
		604	BEGIN { *async = \&Coro::async_pool }
		605
		606	=item cf::sync_job { BLOCK }
		607
		608	The design of Deliantra requires that the main coroutine ($Coro::main)
		609	is always able to handle events or runnable, as Deliantra is only
		610	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		611	acceptable.
		612
		613	If it must be done, put the blocking parts into C<sync_job>. This will run
		614	the given BLOCK in another coroutine while waiting for the result. The
		615	server will be frozen during this time, so the block should either finish
		616	fast or be very important.
		617
		618	=cut
		619
		620	sub sync_job(&) {
		621	my ($job) = @_;
		622
		623	if (in_main) {
		624	my $time = AE::time;
		625
		626	# this is the main coro, too bad, we have to block
		627	# till the operation succeeds, freezing the server :/
		628
		629	#LOG llevError, Carp::longmess "sync job";#d#
		630
		631	my $freeze_guard = freeze_mainloop;
		632
		633	my $busy = 1;
		634	my @res;
		635
		636	(async {
		637	$Coro::current->desc ("sync job coro");
		638	@res = eval { $job->() };
		639	error $@ if $@;
		640	undef $busy;
		641	})->prio (Coro::PRIO_MAX);
		642
		643	while ($busy) {
		644	if (Coro::nready) {
		645	Coro::cede_notself;
		646	} else {
		647	EV::loop EV::LOOP_ONESHOT;
		648	}
		649	}
		650
		651	my $time = AE::time - $time;
		652
		653	$TICK_START += $time; # do not account sync jobs to server load
		654
		655	wantarray ? @res : $res[0]
		656	} else {
		657	# we are in another coroutine, how wonderful, everything just works
		658
		659	$job->()
		660	}
		661	}
		662
		663	=item $coro = cf::async_ext { BLOCK }
		664
		665	Like async, but this coro is automatically being canceled when the
		666	extension calling this is being unloaded.
		667
		668	=cut
		669
		670	sub async_ext(&) {
		671	my $cb = shift;
		672
		673	my $coro = &Coro::async ($cb);
		674
		675	$coro->on_destroy (sub {
		676	delete $EXT_CORO{$coro+0};
		677	});
		678	$EXT_CORO{$coro+0} = $coro;
		679
		680	$coro
		681	}
		682
		683	=item fork_call { }, @args
		684
		685	Executes the given code block with the given arguments in a seperate
		686	process, returning the results. Everything must be serialisable with
		687	Coro::Storable. May, of course, block. Note that the executed sub may
		688	never block itself or use any form of event handling.
		689
		690	=cut
		691
		692	sub post_fork {
		693	reset_signals;
		694	}
		695
		696	sub fork_call(&@) {
		697	my ($cb, @args) = @_;
		698
		699	# we seemingly have to make a local copy of the whole thing,
		700	# otherwise perl prematurely frees the stuff :/
		701	# TODO: investigate and fix (likely this will be rather laborious)
		702
		703	my @res = Coro::Util::fork_eval {
		704	cf::post_fork;
		705	&$cb
		706	} @args;
		707
		708	wantarray ? @res : $res[-1]
		709	}
		710
		711	sub objinfo {
		712	(
		713	"counter value" => cf::object::object_count,
		714	"objects created" => cf::object::create_count,
		715	"objects destroyed" => cf::object::destroy_count,
		716	"freelist size" => cf::object::free_count,
		717	"allocated objects" => cf::object::objects_size,
		718	"active objects" => cf::object::actives_size,
		719	)
		720	}
		721
		722	=item $coin = coin_from_name $name
		723
		724	=cut
		725
		726	our %coin_alias = (
		727	"silver" => "silvercoin",
		728	"silvercoin" => "silvercoin",
		729	"silvercoins" => "silvercoin",
		730	"gold" => "goldcoin",
		731	"goldcoin" => "goldcoin",
		732	"goldcoins" => "goldcoin",
		733	"platinum" => "platinacoin",
		734	"platinumcoin" => "platinacoin",
		735	"platinumcoins" => "platinacoin",
		736	"platina" => "platinacoin",
		737	"platinacoin" => "platinacoin",
		738	"platinacoins" => "platinacoin",
		739	"royalty" => "royalty",
		740	"royalties" => "royalty",
		741	);
		742
		743	sub coin_from_name($) {
		744	$coin_alias{$_[0]}
		745	? cf::arch::find $coin_alias{$_[0]}
		746	: undef
		747	}
		748
		749	=item $value = cf::db_get $family => $key
		750
		751	Returns a single value from the environment database.
		752
		753	=item cf::db_put $family => $key => $value
		754
		755	Stores the given C<$value> in the family. It can currently store binary
		756	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		757
		758	=item $db = cf::db_table "name"
		759
		760	Create and/or open a new database table. The string must not be "db" and must be unique
		761	within each server.
		762
		763	=cut
		764
		765	sub db_table($) {
		766	cf::error "db_get called from main context"
		767	if $Coro::current == $Coro::main;
		768
		769	my ($name) = @_;
		770	my $db = BDB::db_create $DB_ENV;
		771
		772	eval {
		773	$db->set_flags (BDB::CHKSUM);
		774
		775	utf8::encode $name;
		776	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		777	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		778	cf::cleanup "db_open(db): $!" if $!;
		779	};
		780	cf::cleanup "db_open(db): $@" if $@;
		781
		782	$db
		783	}
		784
		785	our $DB;
		786
		787	sub db_init {
		788	$DB ||= db_table "db";
		789	}
		790
		791	sub db_get($$) {
		792	my $key = "$_[0]/$_[1]";
		793
		794	cf::error "db_get called from main context"
		795	if $Coro::current == $Coro::main;
		796
		797	BDB::db_get $DB, undef, $key, my $data;
		798
		799	$! ? ()
		800	: $data
		801	}
		802
		803	sub db_put($$$) {
		804	BDB::dbreq_pri 4;
		805	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		806	}
		807
		808	=item cf::cache $id => [$paths...], $processversion => $process
		809
		810	Generic caching function that returns the value of the resource $id,
		811	caching and regenerating as required.
		812
		813	This function can block.
		814
		815	=cut
		816
		817	sub cache {
		818	my ($id, $src, $processversion, $process) = @_;
		819
		820	my $meta =
		821	join "\x00",
		822	$processversion,
		823	map {
		824	aio_stat $_
		825	and Carp::croak "$_: $!";
		826
		827	($_, (stat _)[7,9])
		828	} @$src;
		829
		830	my $dbmeta = db_get cache => "$id/meta";
		831	if ($dbmeta ne $meta) {
		832	# changed, we may need to process
		833
		834	my @data;
		835	my $md5;
		836
		837	for (0 .. $#$src) {
		838	$data[$_] = load_file $src->[$_];
		839	}
		840
		841	# if processing is expensive, check
		842	# checksum first
		843	if (1) {
		844	$md5 =
		845	join "\x00",
		846	$processversion,
		847	map {
		848	cf::cede_to_tick;
		849	($src->[$_], Digest::MD5::md5_hex $data[$_])
		850	} 0.. $#$src;
		851
		852
		853	my $dbmd5 = db_get cache => "$id/md5";
		854	if ($dbmd5 eq $md5) {
		855	db_put cache => "$id/meta", $meta;
		856
		857	return db_get cache => "$id/data";
		858	}
		859	}
		860
		861	my $t1 = Time::HiRes::time;
		862	my $data = $process->(\@data);
		863	my $t2 = Time::HiRes::time;
		864
		865	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		866
		867	db_put cache => "$id/data", $data;
		868	db_put cache => "$id/md5" , $md5;
		869	db_put cache => "$id/meta", $meta;
		870
		871	return $data;
		872	}
		873
		874	db_get cache => "$id/data"
		875	}
		876
		877	=item cf::datalog type => key => value, ...
		878
		879	Log a datalog packet of the given type with the given key-value pairs.
		880
		881	=cut
		882
		883	sub datalog($@) {
		884	my ($type, %kv) = @_;
		885	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
114	}	886	}
115		887
116	=back	888	=back
117		889
118	=cut	890	=cut
119		891
120	#############################################################################	892	#############################################################################
121		893
122	=head2 EVENTS AND OBJECT ATTACHMENTS	894	=head2 ATTACHABLE OBJECTS
		895
		896	Many objects in deliantra are so-called attachable objects. That means you can
		897	attach callbacks/event handlers (a collection of which is called an "attachment")
		898	to it. All such attachable objects support the following methods.
		899
		900	In the following description, CLASS can be any of C<global>, C<object>
		901	C<player>, C<client> or C<map> (i.e. the attachable objects in
		902	Deliantra).
123		903
124	=over 4	904	=over 4
125		905
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	906	=item $attachable->attach ($attachment, key => $value...)
139		907
140	=item $map->detach ($attachment)	908	=item $attachable->detach ($attachment)
141		909
142	Attach/detach a pre-registered attachment to a map.	910	Attach/detach a pre-registered attachment to a specific object and give it
		911	the specified key/value pairs as arguments.
143		912
144	=item $bool = $object->attached ($name)	913	Example, attach a minesweeper attachment to the given object, making it a
		914	10x10 minesweeper game:
145		915
146	=item $bool = $player->attached ($name)	916	$obj->attach (minesweeper => width => 10, height => 10);
147		917
148	=item $bool = $map->attached ($name)	918	=item $bool = $attachable->attached ($name)
149		919
150	Checks wether the named attachment is currently attached to the object.	920	Checks wether the named attachment is currently attached to the object.
151		921
152	=item cf::attach_global ...	922	=item cf::CLASS->attach ...
153		923
154	Attach handlers for global events.	924	=item cf::CLASS->detach ...
155		925
156	This and all following C<attach_*>-functions expect any number of the	926	Define an anonymous attachment and attach it to all objects of the given
157	following handler/hook descriptions:	927	CLASS. See the next function for an explanation of its arguments.
		928
		929	You can attach to global events by using the C<cf::global> class.
		930
		931	Example, log all player logins:
		932
		933	cf::player->attach (
		934	on_login => sub {
		935	my ($pl) = @_;
		936	...
		937	},
		938	);
		939
		940	Example, attach to the jeweler skill:
		941
		942	cf::object->attach (
		943	type => cf::SKILL,
		944	subtype => cf::SK_JEWELER,
		945	on_use_skill => sub {
		946	my ($sk, $ob, $part, $dir, $msg) = @_;
		947	...
		948	},
		949	);
		950
		951	=item cf::CLASS::attachment $name, ...
		952
		953	Register an attachment by C<$name> through which attachable objects of the
		954	given CLASS can refer to this attachment.
		955
		956	Some classes such as deliantra maps and objects can specify attachments
		957	that are attached at load/instantiate time, thus the need for a name.
		958
		959	These calls expect any number of the following handler/hook descriptions:
158		960
159	=over 4	961	=over 4
160		962
161	=item prio => $number	963	=item prio => $number
162		964
…		…
164	by another C<prio> setting). Lower priority handlers get executed	966	by another C<prio> setting). Lower priority handlers get executed
165	earlier. The default priority is C<0>, and many built-in handlers are	967	earlier. The default priority is C<0>, and many built-in handlers are
166	registered at priority C<-1000>, so lower priorities should not be used	968	registered at priority C<-1000>, so lower priorities should not be used
167	unless you know what you are doing.	969	unless you know what you are doing.
168		970
		971	=item type => $type
		972
		973	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		974	given type of objects only (the additional parameter C<subtype> can be
		975	used to further limit to the given subtype).
		976
169	=item on_I<event> => \&cb	977	=item on_I<event> => \&cb
170		978
171	Call the given code reference whenever the named event happens (event is	979	Call the given code reference whenever the named event happens (event is
172	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	980	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
173	handlers are recognised generally depends on the type of object these	981	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	990	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	991	object/class are recognised.
184		992
185	=back	993	=back
186		994
187	=item cf::attach_to_type $object_type, $subtype, ...	995	Example, define an attachment called "sockpuppet" that calls the given
		996	event handler when a monster attacks:
188		997
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	998	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	999	on_skill_attack => sub {
191	type.	1000	my ($self, $victim) = @_;
192		1001	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	1002	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	1003	}
414	}
415		1004
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1005	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		1006
442	Just because you have a perl object does not mean that the corresponding	1007	Just because you have a perl object does not mean that the corresponding
443	C-level object still exists. If you try to access an object that has no	1008	C-level object still exists. If you try to access an object that has no
444	valid C counterpart anymore you get an exception at runtime. This method	1009	valid C counterpart anymore you get an exception at runtime. This method
445	can be used to test for existence of the C object part without causing an	1010	can be used to test for existence of the C object part without causing an
446	exception.	1011	exception.
447		1012
		1013	=cut
		1014
		1015	# the following variables are defined in .xs and must not be re-created
		1016	our @CB_GLOBAL = (); # registry for all global events
		1017	our @CB_ATTACHABLE = (); # registry for all attachables
		1018	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		1019	our @CB_PLAYER = ();
		1020	our @CB_CLIENT = ();
		1021	our @CB_TYPE = (); # registry for type (cf-object class) based events
		1022	our @CB_MAP = ();
		1023
		1024	my %attachment;
		1025
		1026	sub cf::attachable::thawer_merge {
		1027	# simply override everything except _meta
		1028	local $_[0]{_meta};
		1029	%{$_[0]} = %{$_[1]};
		1030	}
		1031
		1032	sub _attach_cb($$$$) {
		1033	my ($registry, $event, $prio, $cb) = @_;
		1034
		1035	use sort 'stable';
		1036
		1037	$cb = [$prio, $cb];
		1038
		1039	@{$registry->[$event]} = sort
		1040	{ $a->[0] cmp $b->[0] }
		1041	@{$registry->[$event] || []}, $cb;
		1042	}
		1043
		1044	# hack
		1045	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		1046
		1047	# attach handles attaching event callbacks
		1048	# the only thing the caller has to do is pass the correct
		1049	# registry (== where the callback attaches to).
		1050	sub _attach {
		1051	my ($registry, $klass, @arg) = @_;
		1052
		1053	my $object_type;
		1054	my $prio = 0;
		1055	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1056
		1057	#TODO: get rid of this hack
		1058	if ($attachable_klass{$klass}) {
		1059	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1060	}
		1061
		1062	while (@arg) {
		1063	my $type = shift @arg;
		1064
		1065	if ($type eq "prio") {
		1066	$prio = shift @arg;
		1067
		1068	} elsif ($type eq "type") {
		1069	$object_type = shift @arg;
		1070	$registry = $CB_TYPE[$object_type] ||= [];
		1071
		1072	} elsif ($type eq "subtype") {
		1073	defined $object_type or Carp::croak "subtype specified without type";
		1074	my $object_subtype = shift @arg;
		1075	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1076
		1077	} elsif ($type eq "package") {
		1078	my $pkg = shift @arg;
		1079
		1080	while (my ($name, $id) = each %cb_id) {
		1081	if (my $cb = $pkg->can ($name)) {
		1082	_attach_cb $registry, $id, $prio, $cb;
		1083	}
		1084	}
		1085
		1086	} elsif (exists $cb_id{$type}) {
		1087	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		1088
		1089	} elsif (ref $type) {
		1090	error "attaching objects not supported, ignoring.\n";
		1091
		1092	} else {
		1093	shift @arg;
		1094	error "attach argument '$type' not supported, ignoring.\n";
		1095	}
		1096	}
		1097	}
		1098
		1099	sub _object_attach {
		1100	my ($obj, $name, %arg) = @_;
		1101
		1102	return if exists $obj->{_attachment}{$name};
		1103
		1104	if (my $attach = $attachment{$name}) {
		1105	my $registry = $obj->registry;
		1106
		1107	for (@$attach) {
		1108	my ($klass, @attach) = @$_;
		1109	_attach $registry, $klass, @attach;
		1110	}
		1111
		1112	$obj->{$name} = \%arg;
		1113	} else {
		1114	info "object uses attachment '$name' which is not available, postponing.\n";
		1115	}
		1116
		1117	$obj->{_attachment}{$name} = undef;
		1118	}
		1119
		1120	sub cf::attachable::attach {
		1121	if (ref $_[0]) {
		1122	_object_attach @_;
		1123	} else {
		1124	_attach shift->_attach_registry, @_;
		1125	}
		1126	_recalc_want;
		1127	};
		1128
		1129	# all those should be optimised
		1130	sub cf::attachable::detach {
		1131	my ($obj, $name) = @_;
		1132
		1133	if (ref $obj) {
		1134	delete $obj->{_attachment}{$name};
		1135	reattach ($obj);
		1136	} else {
		1137	Carp::croak "cannot, currently, detach class attachments";
		1138	}
		1139	_recalc_want;
		1140	};
		1141
		1142	sub cf::attachable::attached {
		1143	my ($obj, $name) = @_;
		1144
		1145	exists $obj->{_attachment}{$name}
		1146	}
		1147
		1148	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1149	eval "#line " . __LINE__ . " 'cf.pm'
		1150	sub cf::\L$klass\E::_attach_registry {
		1151	(\\\@CB_$klass, KLASS_$klass)
		1152	}
		1153
		1154	sub cf::\L$klass\E::attachment {
		1155	my \$name = shift;
		1156
		1157	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1158	}
		1159	";
		1160	die if $@;
		1161	}
		1162
		1163	our $override;
		1164	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1165
		1166	sub override {
		1167	$override = 1;
		1168	@INVOKE_RESULTS = (@_);
		1169	}
		1170
		1171	sub do_invoke {
		1172	my $event = shift;
		1173	my $callbacks = shift;
		1174
		1175	@INVOKE_RESULTS = ();
		1176
		1177	local $override;
		1178
		1179	for (@$callbacks) {
		1180	eval { &{$_->[1]} };
		1181
		1182	if ($@) {
		1183	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1184	override;
		1185	}
		1186
		1187	return 1 if $override;
		1188	}
		1189
		1190	0
		1191	}
		1192
		1193	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1194
		1195	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1196
		1197	Generate an object-specific event with the given arguments.
		1198
		1199	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1200	removed in future versions), and there is no public API to access override
		1201	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1202
448	=back	1203	=back
449		1204
450	=cut	1205	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		1206
456	#############################################################################	1207	#############################################################################
457	# object support	1208	# object support
458		1209
459	sub instantiate {	1210	sub _object_equal($$);
		1211	sub _object_equal($$) {
		1212	my ($a, $b) = @_;
		1213
		1214	return 0 unless (ref $a) eq (ref $b);
		1215
		1216	if ("HASH" eq ref $a) {
		1217	my @ka = keys %$a;
		1218	my @kb = keys %$b;
		1219
		1220	return 0 if @ka != @kb;
		1221
		1222	for (0 .. $#ka) {
		1223	return 0 unless $ka[$_] eq $kb[$_];
		1224	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1225	}
		1226
		1227	} elsif ("ARRAY" eq ref $a) {
		1228
		1229	return 0 if @$a != @$b;
		1230
		1231	for (0 .. $#$a) {
		1232	return 0 unless _object_equal $a->[$_], $b->[$_];
		1233	}
		1234
		1235	} elsif ($a ne $b) {
		1236	return 0;
		1237	}
		1238
		1239	1
		1240	}
		1241
		1242	our $SLOW_MERGES;#d#
		1243	sub _can_merge {
460	my ($obj, $data) = @_;	1244	my ($ob1, $ob2) = @_;
461		1245
462	$data = from_json $data;	1246	++$SLOW_MERGES;#d#
463		1247
464	for (@$data) {	1248	# we do the slow way here
465	my ($name, $args) = @$_;	1249	return _object_equal $ob1, $ob2
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}	1250	}
470		1251
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	1252	sub reattach {
		1253	# basically do the same as instantiate, without calling instantiate
473	my ($obj) = @_;	1254	my ($obj) = @_;
		1255
		1256	# no longer needed after getting rid of delete_package?
		1257	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1258
474	my $registry = $obj->registry;	1259	my $registry = $obj->registry;
475		1260
476	@$registry = ();	1261	@$registry = ();
477		1262
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1263	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		1264
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	1265	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	1266	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	1267	for (@$attach) {
483	my ($klass, @attach) = @$_;	1268	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	1269	_attach $registry, $klass, @attach;
485	}	1270	}
486	} else {	1271	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	1272	info "object uses attachment '$name' that is not available, postponing.\n";
488	}
489	}
490	}
491
492	sub object_freezer_save {
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}	1273	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}	1274	}
521	}	1275	}
522		1276
523	sub object_thawer_load {	1277	cf::attachable->attach (
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	1278	prio => -1000000,
		1279	on_instantiate => sub {
		1280	my ($obj, $data) = @_;
		1281
		1282	$data = decode_json $data;
		1283
		1284	for (@$data) {
		1285	my ($name, $args) = @$_;
		1286
		1287	$obj->attach ($name, %{$args || {} });
		1288	}
		1289	},
		1290	on_reattach => \&reattach,
544	on_clone => sub {	1291	on_clone => sub {
545	my ($src, $dst) = @_;	1292	my ($src, $dst) = @_;
546		1293
547	@{$dst->registry} = @{$src->registry};	1294	@{$dst->registry} = @{$src->registry};
548		1295
549	%$dst = %$src;	1296	%$dst = %$src;
550		1297
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	1298	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	1299	if exists $src->{_attachment};
553	},	1300	},
554	;	1301	);
		1302
		1303	sub object_freezer_save {
		1304	my ($filename, $rdata, $objs) = @_;
		1305
		1306	sync_job {
		1307	if (length $$rdata) {
		1308	utf8::decode (my $decname = $filename);
		1309	trace sprintf "saving %s (%d,%d)\n",
		1310	$decname, length $$rdata, scalar @$objs
		1311	if $VERBOSE_IO;
		1312
		1313	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1314	aio_chmod $fh, SAVE_MODE;
		1315	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1316	if ($cf::USE_FSYNC) {
		1317	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;
		1318	aio_fsync $fh;
		1319	}
		1320	aio_close $fh;
		1321
		1322	if (@$objs) {
		1323	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1324	aio_chmod $fh, SAVE_MODE;
		1325	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1326	aio_write $fh, 0, (length $data), $data, 0;
		1327	if ($cf::USE_FSYNC) {
		1328	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;
		1329	aio_fsync $fh;
		1330	}
		1331	aio_close $fh;
		1332	aio_rename "$filename.pst~", "$filename.pst";
		1333	}
		1334	} else {
		1335	aio_unlink "$filename.pst";
		1336	}
		1337
		1338	aio_rename "$filename~", $filename;
		1339
		1340	$filename =~ s%/[^/]+$%%;
		1341	aio_pathsync $filename if $cf::USE_FSYNC;
		1342	} else {
		1343	error "unable to save objects: $filename~: $!\n";
		1344	}
		1345	} else {
		1346	aio_unlink $filename;
		1347	aio_unlink "$filename.pst";
		1348	}
		1349	};
		1350	}
		1351
		1352	sub object_freezer_as_string {
		1353	my ($rdata, $objs) = @_;
		1354
		1355	use Data::Dumper;
		1356
		1357	$$rdata . Dumper $objs
		1358	}
		1359
		1360	sub object_thawer_load {
		1361	my ($filename) = @_;
		1362
		1363	my ($data, $av);
		1364
		1365	(aio_load $filename, $data) >= 0
		1366	or return;
		1367
		1368	unless (aio_stat "$filename.pst") {
		1369	(aio_load "$filename.pst", $av) >= 0
		1370	or return;
		1371
		1372	my $st = eval { Coro::Storable::thaw $av };
		1373	$av = $st->{objs};
		1374	}
		1375
		1376	utf8::decode (my $decname = $filename);
		1377	trace sprintf "loading %s (%d,%d)\n",
		1378	$decname, length $data, scalar @{$av || []}
		1379	if $VERBOSE_IO;
		1380
		1381	($data, $av)
		1382	}
		1383
		1384	=head2 COMMAND CALLBACKS
		1385
		1386	=over 4
		1387
		1388	=cut
555		1389
556	#############################################################################	1390	#############################################################################
557	# old plug-in events	1391	# command handling &c
558		1392
559	sub inject_event {	1393	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		1394
563	my $cb = $hook[$event_code]{$extension}	1395	Register a callback for execution when the client sends the user command
564	or return;	1396	$name.
565		1397
566	&$cb	1398	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		1399
588	sub register_command {	1400	sub register_command {
589	my ($name, $time, $cb) = @_;	1401	my ($name, $cb) = @_;
590		1402
591	my $caller = caller;	1403	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	1404	#warn "registering command '$name/$time' to '$caller'";
593		1405
594	push @{ $command{$name} }, [$time, $cb, $caller];	1406	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	1407	}
		1408
		1409	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1410
		1411	Register a callback for execution when the client sends an (synchronous)
		1412	extcmd packet. Ext commands will be processed in the order they are
		1413	received by the server, like other user commands. The first argument is
		1414	the logged-in player. Ext commands can only be processed after a player
		1415	has logged in successfully.
		1416
		1417	If the callback returns something, it is sent back as if reply was being
		1418	called.
		1419
		1420	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1421
		1422	Register a callback for execution when the client sends an (asynchronous)
		1423	exticmd packet. Exti commands are processed by the server as soon as they
		1424	are received, i.e. out of order w.r.t. other commands. The first argument
		1425	is a client socket. Exti commands can be received anytime, even before
		1426	log-in.
		1427
		1428	If the callback returns something, it is sent back as if reply was being
		1429	called.
		1430
		1431	=cut
597		1432
598	sub register_extcmd {	1433	sub register_extcmd {
599	my ($name, $cb) = @_;	1434	my ($name, $cb) = @_;
600		1435
601	my $caller = caller;	1436	$EXTCMD{$name} = $cb;
602	#warn "registering extcmd '$name' to '$caller'";
603
604	$extcmd{$name} = [$cb, $caller];
605	}	1437	}
606		1438
607	sub register {	1439	sub register_exticmd {
608	my ($base, $pkg) = @_;	1440	my ($name, $cb) = @_;
609		1441
610	#TODO	1442	$EXTICMD{$name} = $cb;
611	}	1443	}
612		1444
613	sub load_extension {	1445	use File::Glob ();
614	my ($path) = @_;
615		1446
616	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1447	cf::player->attach (
617	my $base = $1;	1448	on_unknown_command => sub {
618	my $pkg = $1;	1449	my ($pl, $name, $params) = @_;
619	$pkg =~ s/[^[:word:]]/_/g;
620	$pkg = "ext::$pkg";
621		1450
622	warn "loading '$path' into '$pkg'\n";	1451	my $cb = $COMMAND{$name}
		1452	or return;
623		1453
624	open my $fh, "<:utf8", $path	1454	for my $cmd (@$cb) {
625	or die "$path: $!";	1455	$cmd->[1]->($pl->ob, $params);
626
627	my $source =
628	"package $pkg; use strict; use utf8;\n"
629	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })
631	. "\n};\n1";
632
633	eval $source
634	or die "$path: $@";
635
636	push @exts, $pkg;
637	$ext_pkg{$base} = $pkg;
638
639	# no strict 'refs';
640	# @{"$pkg\::ISA"} = ext::;
641
642	register $base, $pkg;
643	}
644
645	sub unload_extension {
646	my ($pkg) = @_;
647
648	warn "removing extension $pkg\n";
649
650	# remove hooks
651	#TODO
652	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};
654	# }
655
656	# remove commands
657	for my $name (keys %command) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
659
660	if (@cb) {
661	$command{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};
666	}	1456	}
		1457
		1458	cf::override;
667	}	1459	},
668
669	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
671	delete $extcmd{$name};
672	}
673
674	if (my $cb = $pkg->can ("unload")) {
675	eval {
676	$cb->($pkg);
677	1
678	} or warn "$pkg unloaded, but with errors: $@";
679	}
680
681	Symbol::delete_package $pkg;
682	}
683
684	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;
689	eval {
690	load_extension $ext;
691	1
692	} or warn "$ext not loaded: $@";
693	}
694	}
695
696	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699
700	attach_to_players
701	on_extcmd => sub {	1460	on_extcmd => sub {
702	my ($pl, $buf) = @_;	1461	my ($pl, $buf) = @_;
703		1462
704	my $msg = eval { from_json $buf };	1463	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
705		1464
706	if (ref $msg) {	1465	if (ref $msg) {
		1466	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		1467
		1468	my @reply;
		1469
707	if (my $cb = $extcmd{$msg->{msgtype}}) {	1470	if (my $cb = $EXTCMD{$type}) {
708	if (my %reply = $cb->[0]->($pl, $msg)) {	1471	@reply = $cb->($pl, @payload);
709	$pl->ext_reply ($msg->{msgid}, %reply);	1472	}
		1473
		1474	$pl->ext_reply ($reply, @reply)
		1475	if $reply;
		1476
		1477	} else {
		1478	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1479	}
		1480
		1481	cf::override;
		1482	},
		1483	);
		1484
		1485	# "readahead" all extensions
		1486	sub cache_extensions {
		1487	my $grp = IO::AIO::aio_group;
		1488
		1489	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1490	for (grep /\.ext$/, @{$_[0]}) {
		1491	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1492	}
		1493	};
		1494
		1495	$grp
		1496	}
		1497
		1498	sub load_extensions {
		1499	info "loading extensions...";
		1500
		1501	cf::sync_job {
		1502	my %todo;
		1503
		1504	for my $path (<$LIBDIR/*.ext>) {
		1505	next unless -r $path;
		1506
		1507	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1508	my $base = $1;
		1509	my $pkg = $1;
		1510	$pkg =~ s/[^[:word:]]/_/g;
		1511	$pkg = "ext::$pkg";
		1512
		1513	open my $fh, "<:utf8", $path
		1514	or die "$path: $!";
		1515
		1516	my $source = do { local $/; <$fh> };
		1517
		1518	my %ext = (
		1519	path => $path,
		1520	base => $base,
		1521	pkg => $pkg,
		1522	);
		1523
		1524	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1525	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1526
		1527	$ext{source} =
		1528	"package $pkg; use common::sense;\n"
		1529	. "#line 1 \"$path\"\n{\n"
		1530	. $source
		1531	. "\n};\n1";
		1532
		1533	$todo{$base} = \%ext;
		1534	}
		1535
		1536	my $pass = 0;
		1537	my %done;
		1538	while (%todo) {
		1539	my $progress;
		1540
		1541	++$pass;
		1542
		1543	ext:
		1544	while (my ($k, $v) = each %todo) {
		1545	for (split /,\s*/, $v->{meta}{depends}) {
		1546	next ext
		1547	unless exists $done{$_};
		1548	}
		1549
		1550	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1551
		1552	my $active = eval $v->{source};
		1553
		1554	if (length $@) {
		1555	error "$v->{path}: $@\n";
		1556
		1557	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1558	if exists $v->{meta}{mandatory};
		1559
		1560	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1561	delete $todo{$k};
		1562	} else {
		1563	$done{$k} = delete $todo{$k};
		1564	push @EXTS, $v->{pkg};
		1565	$progress = 1;
		1566
		1567	info "$v->{base}: extension inactive.\n"
		1568	unless $active;
710	}	1569	}
711	}	1570	}
712	} else {	1571
713	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1572	unless ($progress) {
		1573	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1574
		1575	while (my ($k, $v) = each %todo) {
		1576	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1577	if exists $v->{meta}{mandatory};
		1578	}
		1579
		1580	last;
714	}	1581	}
715		1582	}
716	cf::override;
717	},	1583	};
718	;	1584	}
719		1585
720	#############################################################################	1586	#############################################################################
721	# load/save/clean perl data associated with a map
722		1587
723	*cf::mapsupport::on_clean = sub {	1588	=back
		1589
		1590	=head2 CORE EXTENSIONS
		1591
		1592	Functions and methods that extend core deliantra objects.
		1593
		1594	=cut
		1595
		1596	package cf::player;
		1597
		1598	use Coro::AIO;
		1599
		1600	=head3 cf::player
		1601
		1602	=over 4
		1603
		1604	=item cf::player::num_playing
		1605
		1606	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1607
		1608	=cut
		1609
		1610	sub num_playing {
		1611	scalar grep
		1612	$_->ob->map
		1613	&& !$_->hidden
		1614	&& !$_->ob->flag (cf::FLAG_WIZ),
		1615	cf::player::list
		1616	}
		1617
		1618	=item cf::player::find $login
		1619
		1620	Returns the given player object, loading it if necessary (might block).
		1621
		1622	=cut
		1623
		1624	sub playerdir($) {
		1625	"$PLAYERDIR/"
		1626	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1627	}
		1628
		1629	sub path($) {
		1630	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1631
		1632	(playerdir $login) . "/playerdata"
		1633	}
		1634
		1635	sub find_active($) {
		1636	$cf::PLAYER{$_[0]}
		1637	and $cf::PLAYER{$_[0]}->active
		1638	and $cf::PLAYER{$_[0]}
		1639	}
		1640
		1641	sub exists($) {
724	my ($map) = @_;	1642	my ($login) = @_;
725		1643
726	my $path = $map->tmpname;	1644	$cf::PLAYER{$login}
727	defined $path or return;	1645	or !aio_stat path $login
728
729	unlink "$path.pst";
730	};
731
732	attach_to_maps prio => -10000, package => cf::mapsupport::;
733
734	#############################################################################
735	# load/save perl data associated with player->ob objects
736
737	sub all_objects(@) {
738	@_, map all_objects ($_->inv), @_
739	}	1646	}
740		1647
741	# TODO: compatibility cruft, remove when no longer needed	1648	sub find($) {
742	attach_to_players	1649	return $cf::PLAYER{$_[0]} || do {
		1650	my $login = $_[0];
		1651
		1652	my $guard = cf::lock_acquire "user_find:$login";
		1653
		1654	$cf::PLAYER{$_[0]} || do {
		1655	# rename old playerfiles to new ones
		1656	#TODO: remove when no longer required
		1657	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1658	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1659	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1660	aio_unlink +(playerdir $login) . "/$login.pl";
		1661
		1662	my $f = new_from_file cf::object::thawer path $login
		1663	or return;
		1664
		1665	my $pl = cf::player::load_pl $f
		1666	or return;
		1667
		1668	local $cf::PLAYER_LOADING{$login} = $pl;
		1669	$f->resolve_delayed_derefs;
		1670	$cf::PLAYER{$login} = $pl
		1671	}
		1672	}
		1673	}
		1674
		1675	cf::player->attach (
743	on_load => sub {	1676	on_load => sub {
744	my ($pl, $path) = @_;	1677	my ($pl, $path) = @_;
745		1678
746	for my $o (all_objects $pl->ob) {	1679	# restore slots saved in save, below
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1680	my $slots = delete $pl->{_slots};
748	$o->set_ob_key_value ("_perl_data");
749		1681
750	%$o = %{ Storable::thaw pack "H*", $value };	1682	$pl->ob->current_weapon ($slots->[0]);
		1683	$pl->combat_ob ($slots->[1]);
		1684	$pl->ranged_ob ($slots->[2]);
		1685	},
		1686	);
		1687
		1688	sub save($) {
		1689	my ($pl) = @_;
		1690
		1691	return if $pl->{deny_save};
		1692
		1693	my $path = path $pl;
		1694	my $guard = cf::lock_acquire "user_save:$path";
		1695
		1696	return if $pl->{deny_save};
		1697
		1698	aio_mkdir playerdir $pl, 0770;
		1699	$pl->{last_save} = $cf::RUNTIME;
		1700
		1701	cf::get_slot 0.01;
		1702
		1703	# save slots, to be restored later
		1704	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1705
		1706	$pl->save_pl ($path);
		1707	cf::cede_to_tick;
		1708	}
		1709
		1710	sub new($) {
		1711	my ($login) = @_;
		1712
		1713	my $self = create;
		1714
		1715	$self->ob->name ($login);
		1716	$self->{deny_save} = 1;
		1717
		1718	$cf::PLAYER{$login} = $self;
		1719
		1720	$self
		1721	}
		1722
		1723	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1724
		1725	=cut
		1726
		1727	sub send_msg {
		1728	my $ns = shift->ns
		1729	or return;
		1730	$ns->send_msg (@_);
		1731	}
		1732
		1733	=item $pl->quit_character
		1734
		1735	Nukes the player without looking back. If logged in, the connection will
		1736	be destroyed. May block for a long time.
		1737
		1738	=cut
		1739
		1740	sub quit_character {
		1741	my ($pl) = @_;
		1742
		1743	my $name = $pl->ob->name;
		1744
		1745	$pl->{deny_save} = 1;
		1746	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1747
		1748	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1749	$pl->deactivate;
		1750
		1751	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1752	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1753	ext::highscore::check ($pl->ob);
		1754
		1755	$pl->ns->destroy if $pl->ns;
		1756
		1757	my $path = playerdir $pl;
		1758	my $temp = "$path~$cf::RUNTIME~deleting~";
		1759	aio_rename $path, $temp;
		1760	delete $cf::PLAYER{$pl->ob->name};
		1761	$pl->destroy;
		1762
		1763	my $prefix = qr<^~\Q$name\E/>;
		1764
		1765	# nuke player maps
		1766	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1767
		1768	IO::AIO::aio_rmtree $temp;
		1769	}
		1770
		1771	=item $pl->kick
		1772
		1773	Kicks a player out of the game. This destroys the connection.
		1774
		1775	=cut
		1776
		1777	sub kick {
		1778	my ($pl, $kicker) = @_;
		1779
		1780	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1781	$pl->killer ("kicked");
		1782	$pl->ns->destroy;
		1783	}
		1784
		1785	=item cf::player::list_logins
		1786
		1787	Returns am arrayref of all valid playernames in the system, can take a
		1788	while and may block, so not sync_job-capable, ever.
		1789
		1790	=cut
		1791
		1792	sub list_logins {
		1793	my $dirs = aio_readdir $PLAYERDIR
		1794	or return [];
		1795
		1796	my @logins;
		1797
		1798	for my $login (@$dirs) {
		1799	my $path = path $login;
		1800
		1801	# a .pst is a dead give-away for a valid player
		1802	# if no pst file found, open and chekc for blocked users
		1803	if (aio_stat "$path.pst") {
		1804	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1805	aio_read $fh, 0, 512, my $buf, 0 or next;
		1806	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1807	}
		1808
		1809	utf8::decode $login;
		1810	push @logins, $login;
		1811	}
		1812
		1813	\@logins
		1814	}
		1815
		1816	=item $player->maps
		1817
		1818	=item cf::player::maps $login
		1819
		1820	Returns an arrayref of map paths that are private for this
		1821	player. May block.
		1822
		1823	=cut
		1824
		1825	sub maps($) {
		1826	my ($pl) = @_;
		1827
		1828	$pl = ref $pl ? $pl->ob->name : $pl;
		1829
		1830	my $files = aio_readdir playerdir $pl
		1831	or return;
		1832
		1833	my @paths;
		1834
		1835	for (@$files) {
		1836	utf8::decode $_;
		1837	next if /\.(?:pl|pst)$/;
		1838	next unless /^$PATH_SEP/o;
		1839
		1840	push @paths, cf::map::normalise "~$pl/$_";
		1841	}
		1842
		1843	\@paths
		1844	}
		1845
		1846	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1847
		1848	Expand deliantra pod fragments into protocol xml.
		1849
		1850	=item $player->ext_reply ($msgid, @msg)
		1851
		1852	Sends an ext reply to the player.
		1853
		1854	=cut
		1855
		1856	sub ext_reply($$@) {
		1857	my ($self, $id, @msg) = @_;
		1858
		1859	$self->ns->ext_reply ($id, @msg)
		1860	}
		1861
		1862	=item $player->ext_msg ($type, @msg)
		1863
		1864	Sends an ext event to the client.
		1865
		1866	=cut
		1867
		1868	sub ext_msg($$@) {
		1869	my ($self, $type, @msg) = @_;
		1870
		1871	$self->ns->ext_msg ($type, @msg);
		1872	}
		1873
		1874	=head3 cf::region
		1875
		1876	=over 4
		1877
		1878	=cut
		1879
		1880	package cf::region;
		1881
		1882	=item cf::region::find_by_path $path
		1883
		1884	Tries to decuce the likely region for a map knowing only its path.
		1885
		1886	=cut
		1887
		1888	sub find_by_path($) {
		1889	my ($path) = @_;
		1890
		1891	$path =~ s/^~[^\/]*//; # skip ~login
		1892
		1893	my ($match, $specificity);
		1894
		1895	for my $region (list) {
		1896	if ($region->{match} && $path =~ $region->{match}) {
		1897	($match, $specificity) = ($region, $region->specificity)
		1898	if $region->specificity > $specificity;
		1899	}
		1900	}
		1901
		1902	$match
		1903	}
		1904
		1905	=back
		1906
		1907	=head3 cf::map
		1908
		1909	=over 4
		1910
		1911	=cut
		1912
		1913	package cf::map;
		1914
		1915	use Fcntl;
		1916	use Coro::AIO;
		1917
		1918	use overload
		1919	'""' => \&as_string,
		1920	fallback => 1;
		1921
		1922	our $MAX_RESET = 3600;
		1923	our $DEFAULT_RESET = 3000;
		1924
		1925	sub generate_random_map {
		1926	my ($self, $rmp) = @_;
		1927
		1928	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1929
		1930	$self->_create_random_map ($rmp);
		1931	}
		1932
		1933	=item cf::map->register ($regex, $prio)
		1934
		1935	Register a handler for the map path matching the given regex at the
		1936	givne priority (higher is better, built-in handlers have priority 0, the
		1937	default).
		1938
		1939	=cut
		1940
		1941	sub register {
		1942	my (undef, $regex, $prio) = @_;
		1943	my $pkg = caller;
		1944
		1945	push @{"$pkg\::ISA"}, __PACKAGE__;
		1946
		1947	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1948	}
		1949
		1950	# also paths starting with '/'
		1951	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1952
		1953	sub thawer_merge {
		1954	my ($self, $merge) = @_;
		1955
		1956	# we have to keep some variables in memory intact
		1957	local $self->{path};
		1958	local $self->{load_path};
		1959
		1960	$self->SUPER::thawer_merge ($merge);
		1961	}
		1962
		1963	sub normalise {
		1964	my ($path, $base) = @_;
		1965
		1966	$path = "$path"; # make sure it's a string
		1967
		1968	$path =~ s/\.map$//;
		1969
		1970	# map plan:
		1971	#
		1972	# /! non-realised random map exit (special hack!)
		1973	# {... are special paths that are not being touched
		1974	# ?xxx/... are special absolute paths
		1975	# ?random/... random maps
		1976	# /... normal maps
		1977	# ~user/... per-player map of a specific user
		1978
		1979	$path =~ s/$PATH_SEP/\//go;
		1980
		1981	# treat it as relative path if it starts with
		1982	# something that looks reasonable
		1983	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1984	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1985
		1986	$base =~ s{[^/]+/?$}{};
		1987	$path = "$base/$path";
		1988	}
		1989
		1990	for ($path) {
		1991	redo if s{/\.?/}{/};
		1992	redo if s{/[^/]+/\.\./}{/};
		1993	}
		1994
		1995	$path
		1996	}
		1997
		1998	sub new_from_path {
		1999	my (undef, $path, $base) = @_;
		2000
		2001	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2002
		2003	$path = normalise $path, $base;
		2004
		2005	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2006	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2007	my $self = bless cf::map::new, $pkg;
		2008	$self->{path} = $path; $self->path ($path);
		2009	$self->init; # pass $1 etc.
		2010	return $self;
		2011	}
		2012	}
		2013
		2014	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2015	()
		2016	}
		2017
		2018	# may re-bless or do other evil things
		2019	sub init {
		2020	my ($self) = @_;
		2021
		2022	$self
		2023	}
		2024
		2025	sub as_string {
		2026	my ($self) = @_;
		2027
		2028	"$self->{path}"
		2029	}
		2030
		2031	# the displayed name, this is a one way mapping
		2032	sub visible_name {
		2033	&as_string
		2034	}
		2035
		2036	# the original (read-only) location
		2037	sub load_path {
		2038	my ($self) = @_;
		2039
		2040	"$MAPDIR/$self->{path}.map"
		2041	}
		2042
		2043	# the temporary/swap location
		2044	sub save_path {
		2045	my ($self) = @_;
		2046
		2047	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2048	"$TMPDIR/$path.map"
		2049	}
		2050
		2051	# the unique path, undef == no special unique path
		2052	sub uniq_path {
		2053	my ($self) = @_;
		2054
		2055	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2056	"$UNIQUEDIR/$path"
		2057	}
		2058
		2059	sub decay_objects {
		2060	my ($self) = @_;
		2061
		2062	return if $self->{deny_reset};
		2063
		2064	$self->do_decay_objects;
		2065	}
		2066
		2067	sub unlink_save {
		2068	my ($self) = @_;
		2069
		2070	utf8::encode (my $save = $self->save_path);
		2071	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2072	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2073	}
		2074
		2075	sub load_header_from($) {
		2076	my ($self, $path) = @_;
		2077
		2078	utf8::encode $path;
		2079	my $f = new_from_file cf::object::thawer $path
		2080	or return;
		2081
		2082	$self->_load_header ($f)
		2083	or return;
		2084
		2085	local $MAP_LOADING{$self->{path}} = $self;
		2086	$f->resolve_delayed_derefs;
		2087
		2088	$self->{load_path} = $path;
		2089
		2090	1
		2091	}
		2092
		2093	# used to laod the header of an original map
		2094	sub load_header_orig {
		2095	my ($self) = @_;
		2096
		2097	$self->load_header_from ($self->load_path)
		2098	}
		2099
		2100	# used to laod the header of an instantiated map
		2101	sub load_header_temp {
		2102	my ($self) = @_;
		2103
		2104	$self->load_header_from ($self->save_path)
		2105	}
		2106
		2107	# called after loading the header from an instantiated map
		2108	sub prepare_temp {
		2109	my ($self) = @_;
		2110
		2111	$self->last_access ((delete $self->{last_access})
		2112	|| $cf::RUNTIME); #d#
		2113	# safety
		2114	$self->{instantiate_time} = $cf::RUNTIME
		2115	if $self->{instantiate_time} > $cf::RUNTIME;
		2116	}
		2117
		2118	# called after loading the header from an original map
		2119	sub prepare_orig {
		2120	my ($self) = @_;
		2121
		2122	$self->{load_original} = 1;
		2123	$self->{instantiate_time} = $cf::RUNTIME;
		2124	$self->last_access ($cf::RUNTIME);
		2125	$self->instantiate;
		2126	}
		2127
		2128	sub load_header {
		2129	my ($self) = @_;
		2130
		2131	if ($self->load_header_temp) {
		2132	$self->prepare_temp;
		2133	} else {
		2134	$self->load_header_orig
		2135	or return;
		2136	$self->prepare_orig;
		2137	}
		2138
		2139	$self->{deny_reset} = 1
		2140	if $self->no_reset;
		2141
		2142	$self->default_region (cf::region::find_by_path $self->{path})
		2143	unless $self->default_region;
		2144
		2145	1
		2146	}
		2147
		2148	sub find;
		2149	sub find {
		2150	my ($path, $origin) = @_;
		2151
		2152	cf::cede_to_tick;
		2153
		2154	$path = normalise $path, $origin;
		2155
		2156	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2157	my $guard2 = cf::lock_acquire "map_find:$path";
		2158
		2159	$cf::MAP{$path} || do {
		2160	my $map = new_from_path cf::map $path
		2161	or return;
		2162
		2163	$map->{last_save} = $cf::RUNTIME;
		2164
		2165	$map->load_header
		2166	or return;
		2167
		2168	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2169	# doing this can freeze the server in a sync job, obviously
		2170	#$cf::WAIT_FOR_TICK->wait;
		2171	undef $guard2;
		2172	undef $guard1;
		2173	$map->reset;
		2174	return find $path;
		2175	}
		2176
		2177	$cf::MAP{$path} = $map
		2178	}
		2179	}
		2180
		2181	sub pre_load { }
		2182	#sub post_load { } # XS
		2183
		2184	sub load {
		2185	my ($self) = @_;
		2186
		2187	local $self->{deny_reset} = 1; # loading can take a long time
		2188
		2189	my $path = $self->{path};
		2190
		2191	{
		2192	my $guard = cf::lock_acquire "map_data:$path";
		2193
		2194	return unless $self->valid;
		2195	return unless $self->state == cf::MAP_SWAPPED;
		2196
		2197	$self->alloc;
		2198
		2199	$self->pre_load;
		2200	cf::cede_to_tick;
		2201
		2202	if (exists $self->{load_path}) {
		2203	my $f = new_from_file cf::object::thawer $self->{load_path};
		2204	$f->skip_block;
		2205	$self->_load_objects ($f)
		2206	or return;
		2207
		2208	$self->post_load_original
		2209	if delete $self->{load_original};
		2210
		2211	if (my $uniq = $self->uniq_path) {
		2212	utf8::encode $uniq;
		2213	unless (aio_stat $uniq) {
		2214	if (my $f = new_from_file cf::object::thawer $uniq) {
		2215	$self->clear_unique_items;
		2216	$self->_load_objects ($f);
		2217	$f->resolve_delayed_derefs;
		2218	}
		2219	}
751	}	2220	}
		2221
		2222	$f->resolve_delayed_derefs;
		2223	} else {
		2224	$self->post_load_original
		2225	if delete $self->{load_original};
752	}	2226	}
		2227
		2228	$self->state (cf::MAP_INACTIVE);
		2229
		2230	cf::cede_to_tick;
		2231	# now do the right thing for maps
		2232	$self->link_multipart_objects;
		2233	$self->difficulty ($self->estimate_difficulty)
		2234	unless $self->difficulty;
		2235	cf::cede_to_tick;
		2236
		2237	unless ($self->{deny_activate}) {
		2238	$self->decay_objects;
		2239	$self->fix_auto_apply;
		2240	$self->update_buttons;
		2241	cf::cede_to_tick;
		2242	#$self->activate; # no longer activate maps automatically
		2243	}
		2244
		2245	$self->{last_save} = $cf::RUNTIME;
		2246	$self->last_access ($cf::RUNTIME);
753	},	2247	}
754	;
755		2248
756	#############################################################################	2249	$self->post_load;
757		2250
758	=head2 CORE EXTENSIONS	2251	1
		2252	}
759		2253
760	Functions and methods that extend core crossfire objects.	2254	# customize the map for a given player, i.e.
		2255	# return the _real_ map. used by e.g. per-player
		2256	# maps to change the path to ~playername/mappath
		2257	sub customise_for {
		2258	my ($self, $ob) = @_;
		2259
		2260	return find "~" . $ob->name . "/" . $self->{path}
		2261	if $self->per_player;
		2262
		2263	# return find "?party/" . $ob->name . "/" . $self->{path}
		2264	# if $self->per_party;
		2265
		2266	$self
		2267	}
		2268
		2269	sub find_sync {
		2270	my ($path, $origin) = @_;
		2271
		2272	# it's a bug to call this from the main context
		2273	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2274	if $Coro::current == $Coro::main;
		2275
		2276	find $path, $origin
		2277	}
		2278
		2279	sub do_load_sync {
		2280	my ($map) = @_;
		2281
		2282	# it's a bug to call this from the main context
		2283	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2284	if $Coro::current == $Coro::main;
		2285
		2286	$map->load;
		2287	}
		2288
		2289	our %MAP_PREFETCH;
		2290	our $MAP_PREFETCHER = undef;
		2291
		2292	sub find_async {
		2293	my ($path, $origin, $load) = @_;
		2294
		2295	$path = normalise $path, $origin;
		2296
		2297	if (my $map = $cf::MAP{$path}) {
		2298	return $map if !$load || $map->linkable;
		2299	}
		2300
		2301	$MAP_PREFETCH{$path} |= $load;
		2302
		2303	$MAP_PREFETCHER ||= cf::async {
		2304	$Coro::current->{desc} = "map prefetcher";
		2305
		2306	while (%MAP_PREFETCH) {
		2307	while (my ($k, $v) = each %MAP_PREFETCH) {
		2308	if (my $map = find $k) {
		2309	$map->load if $v;
		2310	}
		2311
		2312	delete $MAP_PREFETCH{$k};
		2313	}
		2314	}
		2315	undef $MAP_PREFETCHER;
		2316	};
		2317	$MAP_PREFETCHER->prio (6);
		2318
		2319	()
		2320	}
		2321
		2322	# common code, used by both ->save and ->swapout
		2323	sub _save {
		2324	my ($self) = @_;
		2325
		2326	$self->{last_save} = $cf::RUNTIME;
		2327
		2328	return unless $self->dirty;
		2329
		2330	my $save = $self->save_path; utf8::encode $save;
		2331	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2332
		2333	$self->{load_path} = $save;
		2334
		2335	return if $self->{deny_save};
		2336
		2337	local $self->{last_access} = $self->last_access;#d#
		2338
		2339	cf::async {
		2340	$Coro::current->{desc} = "map player save";
		2341	$_->contr->save for $self->players;
		2342	};
		2343
		2344	cf::get_slot 0.02;
		2345
		2346	if ($uniq) {
		2347	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2348	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2349	} else {
		2350	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2351	}
		2352	}
		2353
		2354	sub save {
		2355	my ($self) = @_;
		2356
		2357	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2358
		2359	$self->_save;
		2360	}
		2361
		2362	sub swap_out {
		2363	my ($self) = @_;
		2364
		2365	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2366
		2367	return if !$self->linkable;
		2368	return if $self->{deny_save};
		2369	return if $self->players;
		2370
		2371	# first deactivate the map and "unlink" it from the core
		2372	$self->deactivate;
		2373	$_->clear_links_to ($self) for values %cf::MAP;
		2374	$self->state (cf::MAP_SWAPPED);
		2375
		2376	# then atomically save
		2377	$self->_save;
		2378
		2379	# then free the map
		2380	$self->clear;
		2381	}
		2382
		2383	sub reset_at {
		2384	my ($self) = @_;
		2385
		2386	# TODO: safety, remove and allow resettable per-player maps
		2387	return 1e99 if $self->{deny_reset};
		2388
		2389	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2390	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2391
		2392	$time + $to
		2393	}
		2394
		2395	sub should_reset {
		2396	my ($self) = @_;
		2397
		2398	$self->reset_at <= $cf::RUNTIME
		2399	}
		2400
		2401	sub reset {
		2402	my ($self) = @_;
		2403
		2404	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2405
		2406	return if $self->players;
		2407
		2408	cf::trace "resetting map ", $self->path, "\n";
		2409
		2410	$self->state (cf::MAP_SWAPPED);
		2411
		2412	# need to save uniques path
		2413	unless ($self->{deny_save}) {
		2414	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2415
		2416	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2417	if $uniq;
		2418	}
		2419
		2420	delete $cf::MAP{$self->path};
		2421
		2422	$self->deactivate;
		2423	$_->clear_links_to ($self) for values %cf::MAP;
		2424	$self->clear;
		2425
		2426	$self->unlink_save;
		2427	$self->destroy;
		2428	}
		2429
		2430	my $nuke_counter = "aaaa";
		2431
		2432	sub nuke {
		2433	my ($self) = @_;
		2434
		2435	{
		2436	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2437
		2438	delete $cf::MAP{$self->path};
		2439
		2440	$self->unlink_save;
		2441
		2442	bless $self, "cf::map::wrap";
		2443	delete $self->{deny_reset};
		2444	$self->{deny_save} = 1;
		2445	$self->reset_timeout (1);
		2446	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2447
		2448	$cf::MAP{$self->path} = $self;
		2449	}
		2450
		2451	$self->reset; # polite request, might not happen
		2452	}
		2453
		2454	=item $maps = cf::map::tmp_maps
		2455
		2456	Returns an arrayref with all map paths of currently instantiated and saved
		2457	maps. May block.
		2458
		2459	=cut
		2460
		2461	sub tmp_maps() {
		2462	[
		2463	map {
		2464	utf8::decode $_;
		2465	/\.map$/
		2466	? normalise $_
		2467	: ()
		2468	} @{ aio_readdir $TMPDIR or [] }
		2469	]
		2470	}
		2471
		2472	=item $maps = cf::map::random_maps
		2473
		2474	Returns an arrayref with all map paths of currently instantiated and saved
		2475	random maps. May block.
		2476
		2477	=cut
		2478
		2479	sub random_maps() {
		2480	[
		2481	map {
		2482	utf8::decode $_;
		2483	/\.map$/
		2484	? normalise "?random/$_"
		2485	: ()
		2486	} @{ aio_readdir $RANDOMDIR or [] }
		2487	]
		2488	}
		2489
		2490	=item cf::map::unique_maps
		2491
		2492	Returns an arrayref of paths of all shared maps that have
		2493	instantiated unique items. May block.
		2494
		2495	=cut
		2496
		2497	sub unique_maps() {
		2498	[
		2499	map {
		2500	utf8::decode $_;
		2501	s/\.map$//; # TODO future compatibility hack
		2502	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2503	? ()
		2504	: normalise $_
		2505	} @{ aio_readdir $UNIQUEDIR or [] }
		2506	]
		2507	}
		2508
		2509	=item cf::map::static_maps
		2510
		2511	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2512	file in the shared directory excluding F</styles> and F</editor>). May
		2513	block.
		2514
		2515	=cut
		2516
		2517	sub static_maps() {
		2518	my @dirs = "";
		2519	my @maps;
		2520
		2521	while (@dirs) {
		2522	my $dir = shift @dirs;
		2523
		2524	next if $dir eq "/styles" || $dir eq "/editor";
		2525
		2526	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2527	or return;
		2528
		2529	for (@$files) {
		2530	s/\.map$// or next;
		2531	utf8::decode $_;
		2532	push @maps, "$dir/$_";
		2533	}
		2534
		2535	push @dirs, map "$dir/$_", @$dirs;
		2536	}
		2537
		2538	\@maps
		2539	}
		2540
		2541	=back
		2542
		2543	=head3 cf::object
		2544
		2545	=cut
		2546
		2547	package cf::object;
761		2548
762	=over 4	2549	=over 4
763		2550
764	=item cf::player::exists $login	2551	=item $ob->inv_recursive
765		2552
766	Returns true when the given account exists.	2553	Returns the inventory of the object I<and> their inventories, recursively,
		2554	but I<not> the object itself.
767		2555
768	=cut	2556	=cut
769		2557
770	sub cf::player::exists($) {	2558	sub inv_recursive_;
771	cf::player::find $_[0]	2559	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2560	map { $_, inv_recursive_ $_->inv } @_
773	}	2561	}
774		2562
		2563	sub inv_recursive {
		2564	inv_recursive_ inv $_[0]
		2565	}
		2566
		2567	=item $ref = $ob->ref
		2568
		2569	Creates and returns a persistent reference to an object that can be stored as a string.
		2570
		2571	=item $ob = cf::object::deref ($refstring)
		2572
		2573	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2574	even if the object actually exists. May block.
		2575
		2576	=cut
		2577
		2578	sub deref {
		2579	my ($ref) = @_;
		2580
		2581	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2582	my ($uuid, $name) = ($1, $2);
		2583	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2584	or return;
		2585	$pl->ob->uuid eq $uuid
		2586	or return;
		2587
		2588	$pl->ob
		2589	} else {
		2590	warn "$ref: cannot resolve object reference\n";
		2591	undef
		2592	}
		2593	}
		2594
		2595	package cf;
		2596
		2597	=back
		2598
		2599	=head3 cf::object::player
		2600
		2601	=over 4
		2602
775	=item $object->reply ($npc, $msg[, $flags])	2603	=item $player_object->reply ($npc, $msg[, $flags])
776		2604
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2605	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	2606	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	2607	dialogue with the given NPC character.
780		2608
781	=cut	2609	=cut
782		2610
		2611	our $SAY_CHANNEL = {
		2612	id => "say",
		2613	title => "Map",
		2614	reply => "say ",
		2615	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2616	};
		2617
		2618	our $CHAT_CHANNEL = {
		2619	id => "chat",
		2620	title => "Chat",
		2621	reply => "chat ",
		2622	tooltip => "Player chat and shouts, global to the server.",
		2623	};
		2624
783	# rough implementation of a future "reply" method that works	2625	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	2626	# with dialog boxes.
		2627	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	2628	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	2629	my ($self, $npc, $msg, $flags) = @_;
787		2630
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2631	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		2632
790	if ($self->{record_replies}) {	2633	if ($self->{record_replies}) {
791	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2634	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2635
792	} else {	2636	} else {
		2637	my $pl = $self->contr;
		2638
		2639	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2640	my $dialog = $pl->{npc_dialog};
		2641	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2642
		2643	} else {
793	$msg = $npc->name . " says: $msg" if $npc;	2644	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	2645	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2646	}
		2647	}
		2648	}
		2649
		2650	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2651
		2652	=cut
		2653
		2654	sub cf::object::send_msg {
		2655	my $pl = shift->contr
		2656	or return;
		2657	$pl->send_msg (@_);
		2658	}
		2659
		2660	=item $player_object->may ("access")
		2661
		2662	Returns wether the given player is authorized to access resource "access"
		2663	(e.g. "command_wizcast").
		2664
		2665	=cut
		2666
		2667	sub cf::object::player::may {
		2668	my ($self, $access) = @_;
		2669
		2670	$self->flag (cf::FLAG_WIZ) ||
		2671	(ref $cf::CFG{"may_$access"}
		2672	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2673	: $cf::CFG{"may_$access"})
		2674	}
		2675
		2676	=item $player_object->enter_link
		2677
		2678	Freezes the player and moves him/her to a special map (C<{link}>).
		2679
		2680	The player should be reasonably safe there for short amounts of time (e.g.
		2681	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2682	though, as the player cannot control the character while it is on the link
		2683	map.
		2684
		2685	Will never block.
		2686
		2687	=item $player_object->leave_link ($map, $x, $y)
		2688
		2689	Moves the player out of the special C<{link}> map onto the specified
		2690	map. If the map is not valid (or omitted), the player will be moved back
		2691	to the location he/she was before the call to C<enter_link>, or, if that
		2692	fails, to the emergency map position.
		2693
		2694	Might block.
		2695
		2696	=cut
		2697
		2698	sub link_map {
		2699	unless ($LINK_MAP) {
		2700	$LINK_MAP = cf::map::find "{link}"
		2701	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2702	$LINK_MAP->load;
		2703	}
		2704
		2705	$LINK_MAP
		2706	}
		2707
		2708	sub cf::object::player::enter_link {
		2709	my ($self) = @_;
		2710
		2711	$self->deactivate_recursive;
		2712
		2713	++$self->{_link_recursion};
		2714
		2715	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2716
		2717	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2718	if $self->map && $self->map->{path} ne "{link}";
		2719
		2720	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2721	}
		2722
		2723	sub cf::object::player::leave_link {
		2724	my ($self, $map, $x, $y) = @_;
		2725
		2726	return unless $self->contr->active;
		2727
		2728	my $link_pos = delete $self->{_link_pos};
		2729
		2730	unless ($map) {
		2731	# restore original map position
		2732	($map, $x, $y) = @{ $link_pos || [] };
		2733	$map = cf::map::find $map;
		2734
		2735	unless ($map) {
		2736	($map, $x, $y) = @$EMERGENCY_POSITION;
		2737	$map = cf::map::find $map
		2738	or die "FATAL: cannot load emergency map\n";
		2739	}
		2740	}
		2741
		2742	($x, $y) = (-1, -1)
		2743	unless (defined $x) && (defined $y);
		2744
		2745	# use -1 or undef as default coordinates, not 0, 0
		2746	($x, $y) = ($map->enter_x, $map->enter_y)
		2747	if $x <= 0 && $y <= 0;
		2748
		2749	$map->load;
		2750
		2751	return unless $self->contr->active;
		2752
		2753	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2754	if ($self->enter_map ($map, $x, $y)) {
		2755	# entering was successful
		2756	delete $self->{_link_recursion};
		2757	# only activate afterwards, to support waiting in hooks
		2758	$self->activate_recursive;
		2759	}
		2760
		2761	}
		2762
		2763	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2764
		2765	Moves the player to the given map-path and coordinates by first freezing
		2766	her, loading and preparing them map, calling the provided $check callback
		2767	that has to return the map if sucecssful, and then unfreezes the player on
		2768	the new (success) or old (failed) map position. In either case, $done will
		2769	be called at the end of this process.
		2770
		2771	Note that $check will be called with a potentially non-loaded map, so if
		2772	it needs a loaded map it has to call C<< ->load >>.
		2773
		2774	=cut
		2775
		2776	our $GOTOGEN;
		2777
		2778	sub cf::object::player::goto {
		2779	my ($self, $path, $x, $y, $check, $done) = @_;
		2780
		2781	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2782	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2783	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2784	($path, $x, $y) = @$EMERGENCY_POSITION;
		2785	}
		2786
		2787	# do generation counting so two concurrent goto's will be executed in-order
		2788	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2789
		2790	$self->enter_link;
		2791
		2792	(async {
		2793	$Coro::current->{desc} = "player::goto $path $x $y";
		2794
		2795	# *tag paths override both path and x|y
		2796	if ($path =~ /^\*(.*)$/) {
		2797	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2798	my $ob = $obs[rand @obs];
		2799
		2800	# see if we actually can go there
		2801	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2802	$ob = $obs[rand @obs];
		2803	} else {
		2804	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2805	}
		2806	# else put us there anyways for now #d#
		2807
		2808	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2809	} else {
		2810	($path, $x, $y) = (undef, undef, undef);
		2811	}
		2812	}
		2813
		2814	my $map = eval {
		2815	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2816
		2817	if ($map) {
		2818	$map = $map->customise_for ($self);
		2819	$map = $check->($map, $x, $y, $self) if $check && $map;
		2820	} else {
		2821	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2822	}
		2823
		2824	$map
		2825	};
		2826
		2827	if ($@) {
		2828	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2829	LOG llevError | logBacktrace, Carp::longmess $@;
		2830	}
		2831
		2832	if ($gen == $self->{_goto_generation}) {
		2833	delete $self->{_goto_generation};
		2834	$self->leave_link ($map, $x, $y);
		2835	}
		2836
		2837	$done->($self) if $done;
		2838	})->prio (1);
		2839	}
		2840
		2841	=item $player_object->enter_exit ($exit_object)
		2842
		2843	=cut
		2844
		2845	sub parse_random_map_params {
		2846	my ($spec) = @_;
		2847
		2848	my $rmp = { # defaults
		2849	xsize => (cf::rndm 15, 40),
		2850	ysize => (cf::rndm 15, 40),
		2851	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2852	#layout => string,
795	}	2853	};
796	}
797		2854
		2855	for (split /\n/, $spec) {
		2856	my ($k, $v) = split /\s+/, $_, 2;
		2857
		2858	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2859	}
		2860
		2861	$rmp
		2862	}
		2863
		2864	sub prepare_random_map {
		2865	my ($exit) = @_;
		2866
		2867	# all this does is basically replace the /! path by
		2868	# a new random map path (?random/...) with a seed
		2869	# that depends on the exit object
		2870
		2871	my $rmp = parse_random_map_params $exit->msg;
		2872
		2873	if ($exit->map) {
		2874	$rmp->{region} = $exit->region->name;
		2875	$rmp->{origin_map} = $exit->map->path;
		2876	$rmp->{origin_x} = $exit->x;
		2877	$rmp->{origin_y} = $exit->y;
		2878
		2879	$exit->map->touch;
		2880	}
		2881
		2882	$rmp->{random_seed} ||= $exit->random_seed;
		2883
		2884	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2885	my $md5 = Digest::MD5::md5_hex $data;
		2886	my $meta = "$RANDOMDIR/$md5.meta";
		2887
		2888	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2889	aio_write $fh, 0, (length $data), $data, 0;
		2890	undef $fh;
		2891	aio_rename "$meta~", $meta;
		2892
		2893	my $slaying = "?random/$md5";
		2894
		2895	if ($exit->valid) {
		2896	$exit->slaying ("?random/$md5");
		2897	$exit->msg (undef);
		2898	}
		2899	}
		2900	}
		2901
		2902	sub cf::object::player::enter_exit {
		2903	my ($self, $exit) = @_;
		2904
		2905	return unless $self->type == cf::PLAYER;
		2906
		2907	$self->enter_link;
		2908
		2909	(async {
		2910	$Coro::current->{desc} = "enter_exit";
		2911
		2912	unless (eval {
		2913	$self->deactivate_recursive; # just to be sure
		2914
		2915	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2916	my $x = $exit->stats->hp;
		2917	my $y = $exit->stats->sp;
		2918
		2919	# special map handling
		2920	my $slaying = $exit->slaying;
		2921
		2922	# special map handling
		2923	if ($slaying eq "/!") {
		2924	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2925
		2926	prepare_random_map $exit
		2927	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		2928
		2929	$map = $exit->slaying;
		2930
		2931	} elsif ($slaying eq '!up') {
		2932	$map = $exit->map->tile_path (cf::TILE_UP);
		2933	$x = $exit->x;
		2934	$y = $exit->y;
		2935
		2936	} elsif ($slaying eq '!down') {
		2937	$map = $exit->map->tile_path (cf::TILE_DOWN);
		2938	$x = $exit->x;
		2939	$y = $exit->y;
		2940	}
		2941
		2942	$self->goto ($map, $x, $y);
		2943
		2944	# if exit is damned, update players death & WoR home-position
		2945	$self->contr->savebed ($map, $x, $y)
		2946	if $exit->flag (cf::FLAG_DAMNED);
		2947
		2948	1
		2949	}) {
		2950	$self->message ("Something went wrong deep within the deliantra server. "
		2951	. "I'll try to bring you back to the map you were before. "
		2952	. "Please report this to the dungeon master!",
		2953	cf::NDI_UNIQUE | cf::NDI_RED);
		2954
		2955	error "ERROR in enter_exit: $@";
		2956	$self->leave_link;
		2957	}
		2958	})->prio (1);
		2959	}
		2960
		2961	=head3 cf::client
		2962
		2963	=over 4
		2964
		2965	=item $client->send_drawinfo ($text, $flags)
		2966
		2967	Sends a drawinfo packet to the client. Circumvents output buffering so
		2968	should not be used under normal circumstances.
		2969
		2970	=cut
		2971
		2972	sub cf::client::send_drawinfo {
		2973	my ($self, $text, $flags) = @_;
		2974
		2975	utf8::encode $text;
		2976	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2977	}
		2978
		2979	=item $client->send_big_packet ($pkt)
		2980
		2981	Like C<send_packet>, but tries to compress large packets, and fragments
		2982	them as required.
		2983
		2984	=cut
		2985
		2986	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2987
		2988	sub cf::client::send_big_packet {
		2989	my ($self, $pkt) = @_;
		2990
		2991	# try lzf for large packets
		2992	$pkt = "lzf " . Compress::LZF::compress $pkt
		2993	if 1024 <= length $pkt and $self->{can_lzf};
		2994
		2995	# split very large packets
		2996	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2997	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2998	$pkt = "frag";
		2999	}
		3000
		3001	$self->send_packet ($pkt);
		3002	}
		3003
		3004	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3005
		3006	Send a drawinfo or msg packet to the client, formatting the msg for the
		3007	client if neccessary. C<$type> should be a string identifying the type of
		3008	the message, with C<log> being the default. If C<$color> is negative, suppress
		3009	the message unless the client supports the msg packet.
		3010
		3011	=cut
		3012
		3013	# non-persistent channels (usually the info channel)
		3014	our %CHANNEL = (
		3015	"c/motd" => {
		3016	id => "infobox",
		3017	title => "MOTD",
		3018	reply => undef,
		3019	tooltip => "The message of the day",
		3020	},
		3021	"c/identify" => {
		3022	id => "infobox",
		3023	title => "Identify",
		3024	reply => undef,
		3025	tooltip => "Items recently identified",
		3026	},
		3027	"c/examine" => {
		3028	id => "infobox",
		3029	title => "Examine",
		3030	reply => undef,
		3031	tooltip => "Signs and other items you examined",
		3032	},
		3033	"c/shopinfo" => {
		3034	id => "infobox",
		3035	title => "Shop Info",
		3036	reply => undef,
		3037	tooltip => "What your bargaining skill tells you about the shop",
		3038	},
		3039	"c/book" => {
		3040	id => "infobox",
		3041	title => "Book",
		3042	reply => undef,
		3043	tooltip => "The contents of a note or book",
		3044	},
		3045	"c/lookat" => {
		3046	id => "infobox",
		3047	title => "Look",
		3048	reply => undef,
		3049	tooltip => "What you saw there",
		3050	},
		3051	"c/who" => {
		3052	id => "infobox",
		3053	title => "Players",
		3054	reply => undef,
		3055	tooltip => "Shows players who are currently online",
		3056	},
		3057	"c/body" => {
		3058	id => "infobox",
		3059	title => "Body Parts",
		3060	reply => undef,
		3061	tooltip => "Shows which body parts you posess and are available",
		3062	},
		3063	"c/statistics" => {
		3064	id => "infobox",
		3065	title => "Statistics",
		3066	reply => undef,
		3067	tooltip => "Shows your primary statistics",
		3068	},
		3069	"c/skills" => {
		3070	id => "infobox",
		3071	title => "Skills",
		3072	reply => undef,
		3073	tooltip => "Shows your experience per skill and item power",
		3074	},
		3075	"c/shopitems" => {
		3076	id => "infobox",
		3077	title => "Shop Items",
		3078	reply => undef,
		3079	tooltip => "Shows the items currently for sale in this shop",
		3080	},
		3081	"c/resistances" => {
		3082	id => "infobox",
		3083	title => "Resistances",
		3084	reply => undef,
		3085	tooltip => "Shows your resistances",
		3086	},
		3087	"c/pets" => {
		3088	id => "infobox",
		3089	title => "Pets",
		3090	reply => undef,
		3091	tooltip => "Shows information abotu your pets/a specific pet",
		3092	},
		3093	"c/perceiveself" => {
		3094	id => "infobox",
		3095	title => "Perceive Self",
		3096	reply => undef,
		3097	tooltip => "You gained detailed knowledge about yourself",
		3098	},
		3099	"c/uptime" => {
		3100	id => "infobox",
		3101	title => "Uptime",
		3102	reply => undef,
		3103	tooltip => "How long the server has been running since last restart",
		3104	},
		3105	"c/mapinfo" => {
		3106	id => "infobox",
		3107	title => "Map Info",
		3108	reply => undef,
		3109	tooltip => "Information related to the maps",
		3110	},
		3111	"c/party" => {
		3112	id => "party",
		3113	title => "Party",
		3114	reply => "gsay ",
		3115	tooltip => "Messages and chat related to your party",
		3116	},
		3117	"c/death" => {
		3118	id => "death",
		3119	title => "Death",
		3120	reply => undef,
		3121	tooltip => "Reason for and more info about your most recent death",
		3122	},
		3123	"c/say" => $SAY_CHANNEL,
		3124	"c/chat" => $CHAT_CHANNEL,
		3125	);
		3126
		3127	sub cf::client::send_msg {
		3128	my ($self, $channel, $msg, $color, @extra) = @_;
		3129
		3130	$msg = $self->pl->expand_cfpod ($msg)
		3131	unless $color & cf::NDI_VERBATIM;
		3132
		3133	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3134
		3135	# check predefined channels, for the benefit of C
		3136	if ($CHANNEL{$channel}) {
		3137	$channel = $CHANNEL{$channel};
		3138
		3139	$self->ext_msg (channel_info => $channel);
		3140	$channel = $channel->{id};
		3141
		3142	} elsif (ref $channel) {
		3143	# send meta info to client, if not yet sent
		3144	unless (exists $self->{channel}{$channel->{id}}) {
		3145	$self->{channel}{$channel->{id}} = $channel;
		3146	$self->ext_msg (channel_info => $channel);
		3147	}
		3148
		3149	$channel = $channel->{id};
		3150	}
		3151
		3152	return unless @extra || length $msg;
		3153
		3154	# default colour, mask it out
		3155	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3156	if $color & cf::NDI_DEF;
		3157
		3158	my $pkt = "msg "
		3159	. $self->{json_coder}->encode (
		3160	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3161	);
		3162
		3163	$self->send_big_packet ($pkt);
		3164	}
		3165
		3166	=item $client->ext_msg ($type, @msg)
		3167
		3168	Sends an ext event to the client.
		3169
		3170	=cut
		3171
		3172	sub cf::client::ext_msg($$@) {
		3173	my ($self, $type, @msg) = @_;
		3174
		3175	if ($self->extcmd == 2) {
		3176	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3177	} elsif ($self->extcmd == 1) { # TODO: remove
		3178	push @msg, msgtype => "event_$type";
		3179	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3180	}
		3181	}
		3182
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	3183	=item $client->ext_reply ($msgid, @msg)
799		3184
800	Sends an ext reply to the player.	3185	Sends an ext reply to the client.
801		3186
802	=cut	3187	=cut
803		3188
804	sub cf::player::ext_reply($$$%) {	3189	sub cf::client::ext_reply($$@) {
805	my ($self, $id, %msg) = @_;	3190	my ($self, $id, @msg) = @_;
806		3191
807	$msg{msgid} = $id;	3192	return unless $self->extcmd == 2;
808		3193
809	$self->send ("ext " . to_json \%msg);	3194	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
810	}	3195	}
		3196
		3197	=item $success = $client->query ($flags, "text", \&cb)
		3198
		3199	Queues a query to the client, calling the given callback with
		3200	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3201	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3202
		3203	Queries can fail, so check the return code. Or don't, as queries will
		3204	become reliable at some point in the future.
		3205
		3206	=cut
		3207
		3208	sub cf::client::query {
		3209	my ($self, $flags, $text, $cb) = @_;
		3210
		3211	return unless $self->state == ST_PLAYING
		3212	|| $self->state == ST_SETUP
		3213	|| $self->state == ST_CUSTOM;
		3214
		3215	$self->state (ST_CUSTOM);
		3216
		3217	utf8::encode $text;
		3218	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3219
		3220	$self->send_packet ($self->{query_queue}[0][0])
		3221	if @{ $self->{query_queue} } == 1;
		3222
		3223	1
		3224	}
		3225
		3226	cf::client->attach (
		3227	on_connect => sub {
		3228	my ($ns) = @_;
		3229
		3230	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3231	},
		3232	on_reply => sub {
		3233	my ($ns, $msg) = @_;
		3234
		3235	# this weird shuffling is so that direct followup queries
		3236	# get handled first
		3237	my $queue = delete $ns->{query_queue}
		3238	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3239
		3240	(shift @$queue)->[1]->($msg);
		3241	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3242
		3243	push @{ $ns->{query_queue} }, @$queue;
		3244
		3245	if (@{ $ns->{query_queue} } == @$queue) {
		3246	if (@$queue) {
		3247	$ns->send_packet ($ns->{query_queue}[0][0]);
		3248	} else {
		3249	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3250	}
		3251	}
		3252	},
		3253	on_exticmd => sub {
		3254	my ($ns, $buf) = @_;
		3255
		3256	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3257
		3258	if (ref $msg) {
		3259	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3260
		3261	my @reply;
		3262
		3263	if (my $cb = $EXTICMD{$type}) {
		3264	@reply = $cb->($ns, @payload);
		3265	}
		3266
		3267	$ns->ext_reply ($reply, @reply)
		3268	if $reply;
		3269
		3270	} else {
		3271	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3272	}
		3273
		3274	cf::override;
		3275	},
		3276	);
		3277
		3278	=item $client->async (\&cb)
		3279
		3280	Create a new coroutine, running the specified callback. The coroutine will
		3281	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3282	or loss of connection).
		3283
		3284	=cut
		3285
		3286	sub cf::client::async {
		3287	my ($self, $cb) = @_;
		3288
		3289	my $coro = &Coro::async ($cb);
		3290
		3291	$coro->on_destroy (sub {
		3292	delete $self->{_coro}{$coro+0};
		3293	});
		3294
		3295	$self->{_coro}{$coro+0} = $coro;
		3296
		3297	$coro
		3298	}
		3299
		3300	cf::client->attach (
		3301	on_client_destroy => sub {
		3302	my ($ns) = @_;
		3303
		3304	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3305	},
		3306	);
811		3307
812	=back	3308	=back
813		3309
814	=cut
815
816	#############################################################################
817		3310
818	=head2 SAFE SCRIPTING	3311	=head2 SAFE SCRIPTING
819		3312
820	Functions that provide a safe environment to compile and execute	3313	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	3314	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	3315	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	3316	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	3317	functions and methods that can be called is greatly reduced.
825		3318
826	=cut	3319	=cut
827		3320
828	our $safe = new Safe "safe";	3321	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	3322	our $safe_hole = new Safe::Hole;
830		3323
831	$SIG{FPE} = 'IGNORE';	3324	$SIG{FPE} = 'IGNORE';
832		3325
833	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3326	$safe->permit_only (Opcode::opset qw(
		3327	:base_core :base_mem :base_orig :base_math :base_loop
		3328	grepstart grepwhile mapstart mapwhile
		3329	sort time
		3330	));
834		3331
835	# here we export the classes and methods available to script code	3332	# here we export the classes and methods available to script code
836		3333
837	=pod	3334	=pod
838		3335
839	The following fucntions and emthods are available within a safe environment:	3336	The following functions and methods are available within a safe environment:
840		3337
841	cf::object contr pay_amount pay_player	3338	cf::object
		3339	contr pay_amount pay_player map x y force_find force_add destroy
		3340	insert remove name archname title slaying race decrease split
		3341	value
		3342
842	cf::object::player player	3343	cf::object::player
843	cf::player peaceful	3344	player
		3345
		3346	cf::player
		3347	peaceful
		3348
		3349	cf::map
		3350	trigger
844		3351
845	=cut	3352	=cut
846		3353
847	for (	3354	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	3355	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3356	insert remove inv nrof name archname title slaying race
		3357	decrease split destroy change_exp value msg lore send_msg)],
849	["cf::object::player" => qw(player)],	3358	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	3359	["cf::player" => qw(peaceful send_msg)],
		3360	["cf::map" => qw(trigger)],
851	) {	3361	) {
852	no strict 'refs';
853	my ($pkg, @funs) = @$_;	3362	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3363	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	3364	for @funs;
856	}	3365	}
857		3366
…		…
872		3381
873	my $qcode = $code;	3382	my $qcode = $code;
874	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3383	$qcode =~ s/"/‟/g; # not allowed in #line filenames
875	$qcode =~ s/\n/\\n/g;	3384	$qcode =~ s/\n/\\n/g;
876		3385
		3386	%vars = (_dummy => 0) unless %vars;
		3387
		3388	my @res;
877	local $_;	3389	local $_;
878	local @safe::cf::_safe_eval_args = values %vars;
879		3390
880	my $eval =	3391	my $eval =
881	"do {\n"	3392	"do {\n"
882	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3393	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
883	. "#line 0 \"{$qcode}\"\n"	3394	. "#line 0 \"{$qcode}\"\n"
884	. $code	3395	. $code
885	. "\n}"	3396	. "\n}"
886	;	3397	;
887		3398
		3399	if ($CFG{safe_eval}) {
888	sub_generation_inc;	3400	sub_generation_inc;
		3401	local @safe::cf::_safe_eval_args = values %vars;
889	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3402	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
890	sub_generation_inc;	3403	sub_generation_inc;
		3404	} else {
		3405	local @cf::_safe_eval_args = values %vars;
		3406	@res = wantarray ? eval eval : scalar eval $eval;
		3407	}
891		3408
892	if ($@) {	3409	if ($@) {
893	warn "$@";	3410	warn "$@",
894	warn "while executing safe code '$code'\n";	3411	"while executing safe code '$code'\n",
895	warn "with arguments " . (join " ", %vars) . "\n";	3412	"with arguments " . (join " ", %vars) . "\n";
896	}	3413	}
897		3414
898	wantarray ? @res : $res[0]	3415	wantarray ? @res : $res[0]
899	}	3416	}
900		3417
…		…
914	=cut	3431	=cut
915		3432
916	sub register_script_function {	3433	sub register_script_function {
917	my ($fun, $cb) = @_;	3434	my ($fun, $cb) = @_;
918		3435
919	no strict 'refs';	3436	$fun = "safe::$fun" if $CFG{safe_eval};
920	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3437	*$fun = $safe_hole->wrap ($cb);
921	}	3438	}
922		3439
923	=back	3440	=back
924		3441
925	=cut	3442	=cut
926		3443
927	#############################################################################	3444	#############################################################################
		3445	# the server's init and main functions
928		3446
929	=head2 EXTENSION DATABASE SUPPORT	3447	sub load_facedata($) {
		3448	my ($path) = @_;
930		3449
931	Crossfire maintains a very simple database for extension use. It can	3450	# HACK to clear player env face cache, we need some signal framework
932	currently store anything that can be serialised using Storable, which	3451	# for this (global event?)
933	excludes objects.	3452	%ext::player_env::MUSIC_FACE_CACHE = ();
934		3453
935	The parameter C<$family> should best start with the name of the extension	3454	my $enc = JSON::XS->new->utf8->canonical->relaxed;
936	using it, it should be unique.
937		3455
938	=over 4	3456	trace "loading facedata from $path\n";
939		3457
940	=item $hashref = cf::db_get $family	3458	my $facedata = decode_storable load_file $path;
941		3459
942	Return a hashref for use by the extension C<$family>, which can be	3460	$facedata->{version} == 2
943	modified. After modifications, you have to call C<cf::db_dirty> or	3461	or cf::cleanup "$path: version mismatch, cannot proceed.";
944	C<cf::db_sync>.
945		3462
946	=item $value = cf::db_get $family => $key	3463	# patch in the exptable
		3464	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3465	$facedata->{resource}{"res/exp_table"} = {
		3466	type => FT_RSRC,
		3467	data => $exp_table,
		3468	hash => (Digest::MD5::md5 $exp_table),
		3469	};
		3470	cf::cede_to_tick;
947		3471
948	Returns a single value from the database	3472	{
		3473	my $faces = $facedata->{faceinfo};
949		3474
950	=item cf::db_put $family => $hashref	3475	while (my ($face, $info) = each %$faces) {
		3476	my $idx = (cf::face::find $face) || cf::face::alloc $face;
951		3477
952	Stores the given family hashref into the database. Updates are delayed, if	3478	cf::face::set_visibility $idx, $info->{visibility};
953	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3479	cf::face::set_magicmap $idx, $info->{magicmap};
		3480	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3481	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3482	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
954		3483
955	=item cf::db_put $family => $key => $value	3484	cf::cede_to_tick;
		3485	}
956		3486
957	Stores the given C<$value> in the family hash. Updates are delayed, if you	3487	while (my ($face, $info) = each %$faces) {
958	want the data to be synced to disk immediately, use C<cf::db_sync>.	3488	next unless $info->{smooth};
959		3489
960	=item cf::db_dirty	3490	my $idx = cf::face::find $face
		3491	or next;
961		3492
962	Marks the database as dirty, to be updated at a later time.	3493	if (my $smooth = cf::face::find $info->{smooth}) {
		3494	cf::face::set_smooth $idx, $smooth;
		3495	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3496	} else {
		3497	error "smooth face '$info->{smooth}' not found for face '$face'";
		3498	}
963		3499
964	=item cf::db_sync	3500	cf::cede_to_tick;
		3501	}
		3502	}
965		3503
966	Immediately write the database to disk I<if it is dirty>.	3504	{
		3505	my $anims = $facedata->{animinfo};
967		3506
968	=cut	3507	while (my ($anim, $info) = each %$anims) {
		3508	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3509	cf::cede_to_tick;
		3510	}
		3511
		3512	cf::anim::invalidate_all; # d'oh
		3513	}
		3514
		3515	{
		3516	my $res = $facedata->{resource};
		3517
		3518	while (my ($name, $info) = each %$res) {
		3519	if (defined (my $type = $info->{type})) {
		3520	# TODO: different hash - must free and use new index, or cache ixface data queue
		3521	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3522
		3523	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3524	cf::face::set_type $idx, $type;
		3525	cf::face::set_meta $idx, $type & 1 ? undef : $info->{meta}; # any keys left are stashed into meta unless prepended
		3526	} else {
		3527	# $RESOURCE{$name} = $info; # unused
		3528	}
		3529
		3530	cf::cede_to_tick;
		3531	}
		3532	}
		3533
		3534	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3535
		3536	1
		3537	}
		3538
		3539	register_exticmd fx_want => sub {
		3540	my ($ns, $want) = @_;
		3541
		3542	while (my ($k, $v) = each %$want) {
		3543	$ns->fx_want ($k, $v);
		3544	}
		3545	};
		3546
		3547	sub load_resource_file($) {
		3548	my $guard = lock_acquire "load_resource_file";
		3549
		3550	my $status = load_resource_file_ $_[0];
		3551	get_slot 0.1, 100;
		3552	cf::arch::commit_load;
		3553
		3554	$status
		3555	}
		3556
		3557	sub reload_regions {
		3558	# HACK to clear player env face cache, we need some signal framework
		3559	# for this (global event?)
		3560	%ext::player_env::MUSIC_FACE_CACHE = ();
		3561
		3562	load_resource_file "$MAPDIR/regions"
		3563	or die "unable to load regions file\n";
		3564
		3565	for (cf::region::list) {
		3566	$_->{match} = qr/$_->{match}/
		3567	if exists $_->{match};
		3568	}
		3569	}
		3570
		3571	sub reload_facedata {
		3572	load_facedata "$DATADIR/facedata"
		3573	or die "unable to load facedata\n";
		3574	}
		3575
		3576	sub reload_archetypes {
		3577	load_resource_file "$DATADIR/archetypes"
		3578	or die "unable to load archetypes\n";
		3579	}
		3580
		3581	sub reload_treasures {
		3582	load_resource_file "$DATADIR/treasures"
		3583	or die "unable to load treasurelists\n";
		3584	}
		3585
		3586	sub reload_sound {
		3587	trace "loading sound config from $DATADIR/sound\n";
		3588
		3589	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3590
		3591	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3592	my $sound = $soundconf->{compat}[$_]
		3593	or next;
		3594
		3595	my $face = cf::face::find "sound/$sound->[1]";
		3596	cf::sound::set $sound->[0] => $face;
		3597	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3598	}
		3599
		3600	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3601	my $face = cf::face::find "sound/$v";
		3602	cf::sound::set $k => $face;
		3603	}
		3604	}
		3605
		3606	sub reload_resources {
		3607	trace "reloading resource files...\n";
		3608
		3609	reload_exp_table;
		3610	reload_materials;
		3611	reload_facedata;
		3612	reload_sound;
		3613	reload_archetypes;
		3614	reload_regions;
		3615	reload_treasures;
		3616
		3617	trace "finished reloading resource files\n";
		3618	}
		3619
		3620	sub reload_config {
		3621	trace "reloading config file...\n";
		3622
		3623	my $config = load_file "$CONFDIR/config";
		3624	utf8::decode $config;
		3625	*CFG = decode_yaml $config;
		3626
		3627	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3628
		3629	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3630	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3631
		3632	if (exists $CFG{mlockall}) {
		3633	eval {
		3634	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3635	and die "WARNING: m(un)lockall failed: $!\n";
		3636	};
		3637	warn $@ if $@;
		3638	}
		3639	}
		3640
		3641	sub pidfile() {
		3642	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3643	or die "$PIDFILE: $!";
		3644	flock $fh, &Fcntl::LOCK_EX
		3645	or die "$PIDFILE: flock: $!";
		3646	$fh
		3647	}
		3648
		3649	# make sure only one server instance is running at any one time
		3650	sub atomic {
		3651	my $fh = pidfile;
		3652
		3653	my $pid = <$fh>;
		3654	kill 9, $pid if $pid > 0;
		3655
		3656	seek $fh, 0, 0;
		3657	print $fh $$;
		3658	}
		3659
		3660	sub main_loop {
		3661	trace "EV::loop starting\n";
		3662	if (1) {
		3663	EV::loop;
		3664	}
		3665	trace "EV::loop returned\n";
		3666	goto &main_loop unless $REALLY_UNLOOP;
		3667	}
		3668
		3669	sub main {
		3670	cf::init_globals; # initialise logging
		3671
		3672	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3673	LOG llevInfo, "Copyright (C) 2005-2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3674	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3675	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3676
		3677	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3678
		3679	# we must not ever block the main coroutine
		3680	local $Coro::idle = sub {
		3681	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3682	(async {
		3683	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3684	EV::loop EV::LOOP_ONESHOT;
		3685	})->prio (Coro::PRIO_MAX);
		3686	};
		3687
		3688	evthread_start IO::AIO::poll_fileno;
		3689
		3690	cf::sync_job {
		3691	cf::incloader::init ();
		3692
		3693	cf::init_anim;
		3694	cf::init_attackmess;
		3695	cf::init_dynamic;
		3696
		3697	cf::load_settings;
		3698
		3699	reload_resources;
		3700	reload_config;
		3701	db_init;
		3702
		3703	cf::init_uuid;
		3704	cf::init_signals;
		3705	cf::init_skills;
		3706
		3707	cf::init_beforeplay;
		3708
		3709	atomic;
		3710
		3711	load_extensions;
		3712
		3713	utime time, time, $RUNTIMEFILE;
		3714
		3715	# no (long-running) fork's whatsoever before this point(!)
		3716	use POSIX ();
		3717	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3718
		3719	cf::_post_init 0;
		3720	};
		3721
		3722	cf::object::thawer::errors_are_fatal 0;
		3723	info "parse errors in files are no longer fatal from this point on.\n";
		3724
		3725	AE::postpone {
		3726	undef &main; # free gobs of memory :)
		3727	};
		3728
		3729	goto &main_loop;
		3730	}
		3731
		3732	#############################################################################
		3733	# initialisation and cleanup
		3734
		3735	# install some emergency cleanup handlers
		3736	BEGIN {
		3737	our %SIGWATCHER = ();
		3738	for my $signal (qw(INT HUP TERM)) {
		3739	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3740	cf::cleanup "SIG$signal";
		3741	};
		3742	}
		3743	}
		3744
		3745	sub write_runtime_sync {
		3746	my $t0 = AE::time;
		3747
		3748	# first touch the runtime file to show we are still running:
		3749	# the fsync below can take a very very long time.
		3750
		3751	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3752
		3753	my $guard = cf::lock_acquire "write_runtime";
		3754
		3755	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3756	or return;
		3757
		3758	my $value = $cf::RUNTIME + 90 + 10;
		3759	# 10 is the runtime save interval, for a monotonic clock
		3760	# 60 allows for the watchdog to kill the server.
		3761
		3762	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3763	and return;
		3764
		3765	# always fsync - this file is important
		3766	aio_fsync $fh
		3767	and return;
		3768
		3769	# touch it again to show we are up-to-date
		3770	aio_utime $fh, undef, undef;
		3771
		3772	close $fh
		3773	or return;
		3774
		3775	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3776	and return;
		3777
		3778	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3779
		3780	1
		3781	}
		3782
		3783	our $uuid_lock;
		3784	our $uuid_skip;
		3785
		3786	sub write_uuid_sync($) {
		3787	$uuid_skip ||= $_[0];
		3788
		3789	return if $uuid_lock;
		3790	local $uuid_lock = 1;
		3791
		3792	my $uuid = "$LOCALDIR/uuid";
		3793
		3794	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3795	or return;
		3796
		3797	my $value = uuid_seq uuid_cur;
		3798
		3799	unless ($value) {
		3800	info "cowardly refusing to write zero uuid value!\n";
		3801	return;
		3802	}
		3803
		3804	my $value = uuid_str $value + $uuid_skip;
		3805	$uuid_skip = 0;
		3806
		3807	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3808	and return;
		3809
		3810	# always fsync - this file is important
		3811	aio_fsync $fh
		3812	and return;
		3813
		3814	close $fh
		3815	or return;
		3816
		3817	aio_rename "$uuid~", $uuid
		3818	and return;
		3819
		3820	trace "uuid file written ($value).\n";
		3821
		3822	1
		3823
		3824	}
		3825
		3826	sub write_uuid($$) {
		3827	my ($skip, $sync) = @_;
		3828
		3829	$sync ? write_uuid_sync $skip
		3830	: async { write_uuid_sync $skip };
		3831	}
		3832
		3833	sub emergency_save() {
		3834	my $freeze_guard = cf::freeze_mainloop;
		3835
		3836	info "emergency_perl_save: enter\n";
		3837
		3838	# this is a trade-off: we want to be very quick here, so
		3839	# save all maps without fsync, and later call a global sync
		3840	# (which in turn might be very very slow)
		3841	local $USE_FSYNC = 0;
		3842
		3843	cf::sync_job {
		3844	cf::write_runtime_sync; # external watchdog should not bark
		3845
		3846	# use a peculiar iteration method to avoid tripping on perl
		3847	# refcount bugs in for. also avoids problems with players
		3848	# and maps saved/destroyed asynchronously.
		3849	info "emergency_perl_save: begin player save\n";
		3850	for my $login (keys %cf::PLAYER) {
		3851	my $pl = $cf::PLAYER{$login} or next;
		3852	$pl->valid or next;
		3853	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3854	$pl->save;
		3855	}
		3856	info "emergency_perl_save: end player save\n";
		3857
		3858	cf::write_runtime_sync; # external watchdog should not bark
		3859
		3860	info "emergency_perl_save: begin map save\n";
		3861	for my $path (keys %cf::MAP) {
		3862	my $map = $cf::MAP{$path} or next;
		3863	$map->valid or next;
		3864	$map->save;
		3865	}
		3866	info "emergency_perl_save: end map save\n";
		3867
		3868	cf::write_runtime_sync; # external watchdog should not bark
		3869
		3870	info "emergency_perl_save: begin database checkpoint\n";
		3871	BDB::db_env_txn_checkpoint $DB_ENV;
		3872	info "emergency_perl_save: end database checkpoint\n";
		3873
		3874	info "emergency_perl_save: begin write uuid\n";
		3875	write_uuid_sync 1;
		3876	info "emergency_perl_save: end write uuid\n";
		3877
		3878	cf::write_runtime_sync; # external watchdog should not bark
		3879
		3880	trace "emergency_perl_save: syncing database to disk";
		3881	BDB::db_env_txn_checkpoint $DB_ENV;
		3882
		3883	info "emergency_perl_save: starting sync\n";
		3884	IO::AIO::aio_sync sub {
		3885	info "emergency_perl_save: finished sync\n";
		3886	};
		3887
		3888	cf::write_runtime_sync; # external watchdog should not bark
		3889
		3890	trace "emergency_perl_save: flushing outstanding aio requests";
		3891	while (IO::AIO::nreqs || BDB::nreqs) {
		3892	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		3893	}
		3894
		3895	cf::write_runtime_sync; # external watchdog should not bark
		3896	};
		3897
		3898	info "emergency_perl_save: leave\n";
		3899	}
		3900
		3901	sub post_cleanup {
		3902	my ($make_core) = @_;
		3903
		3904	IO::AIO::flush;
		3905
		3906	error Carp::longmess "post_cleanup backtrace"
		3907	if $make_core;
		3908
		3909	my $fh = pidfile;
		3910	unlink $PIDFILE if <$fh> == $$;
		3911	}
		3912
		3913	# a safer delete_package, copied from Symbol
		3914	sub clear_package($) {
		3915	my $pkg = shift;
		3916
		3917	# expand to full symbol table name if needed
		3918	unless ($pkg =~ /^main::.*::$/) {
		3919	$pkg = "main$pkg" if $pkg =~ /^::/;
		3920	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3921	$pkg .= '::' unless $pkg =~ /::$/;
		3922	}
		3923
		3924	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3925	my $stem_symtab = *{$stem}{HASH};
		3926
		3927	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3928	or return;
		3929
		3930	# clear all symbols
		3931	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3932	for my $name (keys %$leaf_symtab) {
		3933	_gv_clear *{"$pkg$name"};
		3934	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3935	}
		3936	}
		3937
		3938	sub do_reload_perl() {
		3939	# can/must only be called in main
		3940	unless (in_main) {
		3941	error "can only reload from main coroutine";
		3942	return;
		3943	}
		3944
		3945	return if $RELOAD++;
		3946
		3947	my $t1 = AE::time;
		3948
		3949	while ($RELOAD) {
		3950	cf::get_slot 0.1, -1, "reload_perl";
		3951	info "perl_reload: reloading...";
		3952
		3953	trace "perl_reload: entering sync_job";
		3954
		3955	cf::sync_job {
		3956	#cf::emergency_save;
		3957
		3958	trace "perl_reload: cancelling all extension coros";
		3959	$_->cancel for values %EXT_CORO;
		3960	%EXT_CORO = ();
		3961
		3962	trace "perl_reload: removing commands";
		3963	%COMMAND = ();
		3964
		3965	trace "perl_reload: removing ext/exti commands";
		3966	%EXTCMD = ();
		3967	%EXTICMD = ();
		3968
		3969	trace "perl_reload: unloading/nuking all extensions";
		3970	for my $pkg (@EXTS) {
		3971	trace "... unloading $pkg";
		3972
		3973	if (my $cb = $pkg->can ("unload")) {
		3974	eval {
		3975	$cb->($pkg);
		3976	1
		3977	} or error "$pkg unloaded, but with errors: $@";
		3978	}
		3979
		3980	trace "... clearing $pkg";
		3981	clear_package $pkg;
		3982	}
		3983
		3984	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3985	while (my ($k, $v) = each %INC) {
		3986	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3987
		3988	trace "... unloading $k";
		3989	delete $INC{$k};
		3990
		3991	$k =~ s/\.pm$//;
		3992	$k =~ s/\//::/g;
		3993
		3994	if (my $cb = $k->can ("unload_module")) {
		3995	$cb->();
		3996	}
		3997
		3998	clear_package $k;
		3999	}
		4000
		4001	trace "perl_reload: getting rid of safe::, as good as possible";
		4002	clear_package "safe::$_"
		4003	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4004
		4005	trace "perl_reload: unloading cf.pm \"a bit\"";
		4006	delete $INC{"cf.pm"};
		4007	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4008
		4009	# don't, removes xs symbols, too,
		4010	# and global variables created in xs
		4011	#clear_package __PACKAGE__;
		4012
		4013	info "perl_reload: unload completed, starting to reload now";
		4014
		4015	trace "perl_reload: reloading cf.pm";
		4016	require cf;
		4017	cf::_connect_to_perl_1;
		4018
		4019	trace "perl_reload: loading config and database again";
		4020	cf::reload_config;
		4021
		4022	trace "perl_reload: loading extensions";
		4023	cf::load_extensions;
		4024
		4025	if ($REATTACH_ON_RELOAD) {
		4026	trace "perl_reload: reattaching attachments to objects/players";
		4027	_global_reattach; # objects, sockets
		4028	trace "perl_reload: reattaching attachments to maps";
		4029	reattach $_ for values %MAP;
		4030	trace "perl_reload: reattaching attachments to players";
		4031	reattach $_ for values %PLAYER;
		4032	}
		4033
		4034	cf::_post_init 1;
		4035
		4036	trace "perl_reload: leaving sync_job";
		4037
		4038	1
		4039	} or do {
		4040	error $@;
		4041	cf::cleanup "perl_reload: error, exiting.";
		4042	};
		4043
		4044	--$RELOAD;
		4045	}
		4046
		4047	$t1 = AE::time - $t1;
		4048	info "perl_reload: completed in ${t1}s\n";
		4049	};
		4050
		4051	our $RELOAD_WATCHER; # used only during reload
		4052
		4053	sub reload_perl() {
		4054	# doing reload synchronously and two reloads happen back-to-back,
		4055	# coro crashes during coro_state_free->destroy here.
		4056
		4057	$RELOAD_WATCHER ||= cf::async {
		4058	Coro::AIO::aio_wait cache_extensions;
		4059
		4060	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4061	do_reload_perl;
		4062	undef $RELOAD_WATCHER;
		4063	};
		4064	};
		4065	}
		4066
		4067	register_command "reload" => sub {
		4068	my ($who, $arg) = @_;
		4069
		4070	if ($who->flag (FLAG_WIZ)) {
		4071	$who->message ("reloading server.");
		4072	async {
		4073	$Coro::current->{desc} = "perl_reload";
		4074	reload_perl;
		4075	};
		4076	}
		4077	};
		4078
		4079	#############################################################################
		4080
		4081	my $bug_warning = 0;
		4082
		4083	sub wait_for_tick() {
		4084	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4085
		4086	$WAIT_FOR_TICK->wait;
		4087	}
		4088
		4089	sub wait_for_tick_begin() {
		4090	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4091
		4092	my $signal = new Coro::Signal;
		4093	push @WAIT_FOR_TICK_BEGIN, $signal;
		4094	$signal->wait;
		4095	}
		4096
		4097	sub tick {
		4098	if ($Coro::current != $Coro::main) {
		4099	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4100	unless ++$bug_warning > 10;
		4101	return;
		4102	}
		4103
		4104	cf::one_tick; # one server iteration
		4105
		4106	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4107
		4108	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4109	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4110	Coro::async_pool {
		4111	$Coro::current->{desc} = "runtime saver";
		4112	write_runtime_sync
		4113	or error "ERROR: unable to write runtime file: $!";
		4114	};
		4115	}
		4116
		4117	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4118	$sig->send;
		4119	}
		4120	$WAIT_FOR_TICK->broadcast;
		4121
		4122	$LOAD = ($NOW - $TICK_START) / $TICK;
		4123	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4124
		4125	if (0) {
		4126	if ($NEXT_TICK) {
		4127	my $jitter = $TICK_START - $NEXT_TICK;
		4128	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4129	debug "jitter $JITTER\n";#d#
		4130	}
		4131	}
		4132	}
969		4133
970	{	4134	{
971	my $db;	4135	# configure BDB
972	my $path = cf::localdir . "/database.pst";
973		4136
974	sub db_load() {	4137	BDB::min_parallel 16;
975	warn "loading database $path\n";#d# remove later	4138	BDB::max_poll_reqs $TICK * 0.1;
976	$db = stat $path ? Storable::retrieve $path : { };	4139	#$AnyEvent::BDB::WATCHER->priority (1);
977	}
978		4140
979	my $pid;	4141	unless ($DB_ENV) {
		4142	$DB_ENV = BDB::db_env_create;
		4143	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4144	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4145	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4146	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4147	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
980		4148
981	sub db_save() {	4149	cf::sync_job {
982	warn "saving database $path\n";#d# remove later
983	waitpid $pid, 0 if $pid;
984	if (0 == ($pid = fork)) {
985	$db->{_meta}{version} = 1;
986	Storable::nstore $db, "$path~";
987	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;
989	}
990	}
991
992	my $dirty;
993
994	sub db_sync() {
995	db_save if $dirty;
996	undef $dirty;
997	}
998
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1000	db_sync;
1001	});
1002
1003	sub db_dirty() {
1004	$dirty = 1;
1005	$idle->start;
1006	}
1007
1008	sub db_get($;$) {
1009	@_ >= 2
1010	? $db->{$_[0]}{$_[1]}
1011	: ($db->{$_[0]} ||= { })
1012	}
1013
1014	sub db_put($$;$) {
1015	if (@_ >= 3) {
1016	$db->{$_[0]}{$_[1]} = $_[2];
1017	} else {	4150	eval {
1018	$db->{$_[0]} = $_[1];	4151	BDB::db_env_open
1019	}	4152	$DB_ENV,
1020	db_dirty;	4153	$BDBDIR,
1021	}	4154	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4155	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4156	0666;
1022		4157
1023	attach_global	4158	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1024	prio => 10000,
1025	on_cleanup => sub {
1026	db_sync;
1027	},
1028	;
1029	}
1030
1031	#############################################################################
1032	# the server's main()
1033
1034	sub cfg_load {
1035	open my $fh, "<:utf8", cf::confdir . "/config"
1036	or return;
1037
1038	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;
1040	}
1041
1042	sub main {
1043	cfg_load;
1044	db_load;
1045	load_extensions;
1046	Event::loop;
1047	}
1048
1049	#############################################################################
1050	# initialisation
1051
1052	sub _perl_reload(&) {
1053	my ($msg) = @_;
1054
1055	$msg->("reloading...");
1056
1057	eval {
1058	# cancel all watchers
1059	$_->cancel for Event::all_watchers;
1060
1061	# unload all extensions
1062	for (@exts) {
1063	$msg->("unloading <$_>");
1064	unload_extension $_;
1065	}
1066
1067	# unload all modules loaded from $LIBDIR
1068	while (my ($k, $v) = each %INC) {
1069	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1070
1071	$msg->("removing <$k>");
1072	delete $INC{$k};
1073
1074	$k =~ s/\.pm$//;
1075	$k =~ s/\//::/g;
1076
1077	if (my $cb = $k->can ("unload_module")) {
1078	$cb->();
1079	}	4159	};
1080		4160
1081	Symbol::delete_package $k;	4161	cf::cleanup "db_env_open(db): $@" if $@;
1082	}	4162	};
		4163	}
1083		4164
1084	# sync database to disk	4165	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1085	cf::db_sync;	4166	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1086
1087	# get rid of safe::, as good as possible
1088	Symbol::delete_package "safe::$_"
1089	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1090
1091	# remove register_script_function callbacks
1092	# TODO
1093
1094	# unload cf.pm "a bit"
1095	delete $INC{"cf.pm"};
1096
1097	# don't, removes xs symbols, too,
1098	# and global variables created in xs
1099	#Symbol::delete_package __PACKAGE__;
1100
1101	# reload cf.pm
1102	$msg->("reloading cf.pm");
1103	require cf;
1104
1105	# load config and database again
1106	cf::cfg_load;
1107	cf::db_load;
1108
1109	# load extensions
1110	$msg->("load extensions");
1111	cf::load_extensions;
1112
1113	# reattach attachments to objects
1114	$msg->("reattach");
1115	_global_reattach;
1116	};	4167	};
1117	$msg->($@) if $@;	4168	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1118		4169	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1119	$msg->("reloaded");
1120	};
1121
1122	sub perl_reload() {
1123	_perl_reload {
1124	warn $_[0];
1125	print "$_[0]\n";
1126	};	4170	};
		4171	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4172	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4173	};
1127	}	4174	}
1128		4175
1129	register_command "perl-reload", 0, sub {	4176	{
		4177	# configure IO::AIO
		4178
		4179	IO::AIO::min_parallel 8;
		4180	IO::AIO::max_poll_time $TICK * 0.1;
		4181	undef $AnyEvent::AIO::WATCHER;
		4182	}
		4183
		4184	our $_log_backtrace;
		4185	our $_log_backtrace_last;
		4186
		4187	sub _log_backtrace {
1130	my ($who, $arg) = @_;	4188	my ($msg, @addr) = @_;
1131		4189
1132	if ($who->flag (FLAG_WIZ)) {	4190	$msg =~ s/\n$//;
1133	_perl_reload {	4191
1134	warn $_[0];	4192	if ($_log_backtrace_last eq $msg) {
1135	$who->message ($_[0]);	4193	LOG llevInfo, "[ABT] $msg\n";
		4194	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4195	# limit the # of concurrent backtraces
		4196	} elsif ($_log_backtrace < 2) {
		4197	$_log_backtrace_last = $msg;
		4198	++$_log_backtrace;
		4199	my $perl_bt = Carp::longmess $msg;
		4200	async {
		4201	$Coro::current->{desc} = "abt $msg";
		4202
		4203	my @bt = fork_call {
		4204	@addr = map { sprintf "%x", $_ } @addr;
		4205	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4206	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4207	or die "addr2line: $!";
		4208
		4209	my @funcs;
		4210	my @res = <$fh>;
		4211	chomp for @res;
		4212	while (@res) {
		4213	my ($func, $line) = splice @res, 0, 2, ();
		4214	push @funcs, "[$func] $line";
		4215	}
		4216
		4217	@funcs
		4218	};
		4219
		4220	LOG llevInfo, "[ABT] $perl_bt\n";
		4221	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4222	LOG llevInfo, "[ABT] $_\n" for @bt;
		4223	--$_log_backtrace;
1136	};	4224	};
1137	}	4225	} else {
1138	};	4226	LOG llevInfo, "[ABT] $msg\n";
1139		4227	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1140	register "<global>", __PACKAGE__;
1141
1142	unshift @INC, $LIBDIR;
1143
1144	$TICK_WATCHER = Event->timer (
1145	prio => 1,
1146	at => $NEXT_TICK || 1,
1147	cb => sub {
1148	cf::server_tick; # one server iteration
1149
1150	my $NOW = Event::time;
1151	$NEXT_TICK += $TICK;
1152
1153	# if we are delayed by four ticks, skip them all
1154	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1155
1156	$TICK_WATCHER->at ($NEXT_TICK);
1157	$TICK_WATCHER->start;
1158	},	4228	}
1159	);	4229	}
		4230
		4231	# load additional modules
		4232	require "cf/$_.pm" for @EXTRA_MODULES;
		4233	cf::_connect_to_perl_2;
		4234
		4235	END { cf::emergency_save }
1160		4236
1161	1	4237	1
1162		4238

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