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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.87 by root, Thu Dec 14 22:45:40 2006 UTC vs.
Revision 1.544 by root, Thu May 6 21:58:07 2010 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010 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;
		57	use YAML::XS ();
10	use IO::AIO ();	58	use IO::AIO ();
11	use YAML::Syck ();
12	use Time::HiRes;	59	use Time::HiRes;
13	use Event;	60	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
15		62
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	63	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		64
19	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
		69
		70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		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" };
20		78
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
22		82
23	our %COMMAND = ();	83	our %COMMAND = ();
24	our %COMMAND_TIME = ();	84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
26		91
27	_init_vars;	92	our $RELOAD; # number of reloads so far, non-zero while in reload
28
29	our @EVENT;	93	our @EVENT;
30	our $LIBDIR = maps_directory "perl";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
31		96
32	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
33	our $TICK_WATCHER;	98	our $DATADIR = datadir;
		99	our $LIBDIR = "$DATADIR/ext";
		100	our $PODDIR = "$DATADIR/pod";
		101	our $MAPDIR = "$DATADIR/" . mapdir;
		102	our $LOCALDIR = localdir;
		103	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		104	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		105	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		106	our $RANDOMDIR = "$LOCALDIR/random";
		107	our $BDBDIR = "$LOCALDIR/db";
		108	our $PIDFILE = "$LOCALDIR/pid";
		109	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		110
		111	our %RESOURCE; # unused
		112
		113	our $OUTPUT_RATE_MIN = 3000;
		114	our $OUTPUT_RATE_MAX = 1000000;
		115
		116	our $MAX_LINKS = 32; # how many chained exits to follow
		117	our $VERBOSE_IO = 1;
		118
		119	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		120	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	121	our $NEXT_TICK;
		122	our $USE_FSYNC = 1; # use fsync to write maps - default on
		123
		124	our $BDB_DEADLOCK_WATCHER;
		125	our $BDB_CHECKPOINT_WATCHER;
		126	our $BDB_TRICKLE_WATCHER;
		127	our $DB_ENV;
		128
		129	our @EXTRA_MODULES = qw(pod match mapscript incloader);
35		130
36	our %CFG;	131	our %CFG;
37		132
38	our $UPTIME; $UPTIME ||= time;	133	our $UPTIME; $UPTIME ||= time;
		134	our $RUNTIME;
		135	our $NOW;
		136
		137	our (%PLAYER, %PLAYER_LOADING); # all users
		138	our (%MAP, %MAP_LOADING ); # all maps
		139	our $LINK_MAP; # the special {link} map, which is always available
		140
		141	# used to convert map paths into valid unix filenames by replacing / by ∕
		142	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		143
		144	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		145	our $LOADAVG; # same thing, but with alpha-smoothing
		146	our $JITTER; # average jitter
		147	our $TICK_START; # for load detecting purposes
		148
		149	our @POST_INIT;
		150
		151	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		152	our $REALLY_UNLOOP; # never set to true, please :)
		153
		154	binmode STDOUT;
		155	binmode STDERR;
		156
		157	# read virtual server time, if available
		158	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		159	open my $fh, "<", $RUNTIMEFILE
		160	or die "unable to read $RUNTIMEFILE file: $!";
		161	$RUNTIME = <$fh> + 0.;
		162	}
		163
		164	eval "sub TICK() { $TICK } 1" or die;
		165
		166	mkdir $_
		167	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		168
		169	our $EMERGENCY_POSITION;
		170
		171	sub cf::map::normalise;
		172
		173	sub in_main() {
		174	$Coro::current == $Coro::main
		175	}
39		176
40	#############################################################################	177	#############################################################################
41		178
		179	%REFLECT = ();
		180	for (@REFLECT) {
		181	my $reflect = JSON::XS::decode_json $_;
		182	$REFLECT{$reflect->{class}} = $reflect;
		183	}
		184
		185	# this is decidedly evil
		186	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		187
		188	#############################################################################
		189
42	=head2 GLOBAL VARIABLES	190	=head2 GLOBAL VARIABLES
43		191
44	=over 4	192	=over 4
45		193
46	=item $cf::UPTIME	194	=item $cf::UPTIME
47		195
48	The timestamp of the server start (so not actually an uptime).	196	The timestamp of the server start (so not actually an uptime).
49		197
50	=item $cf::LIBDIR	198	=item $cf::RUNTIME
51		199
52	The perl library directory, where extensions and cf-specific modules can	200	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	201	every server tick.
		202
		203	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		204	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		205	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		206
		207	Various directories - "/etc", read-only install directory, perl-library
		208	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		209	unique-items directory, player file directory, random maps directory and
		210	database environment.
		211
		212	=item $cf::NOW
		213
		214	The time of the last (current) server tick.
54		215
55	=item $cf::TICK	216	=item $cf::TICK
56		217
57	The interval between server ticks, in seconds.	218	The interval between server ticks, in seconds.
58		219
		220	=item $cf::LOADAVG
		221
		222	The current CPU load on the server (alpha-smoothed), as a value between 0
		223	(none) and 1 (overloaded), indicating how much time is spent on processing
		224	objects per tick. Healthy values are < 0.5.
		225
		226	=item $cf::LOAD
		227
		228	The raw value load value from the last tick.
		229
59	=item %cf::CFG	230	=item %cf::CFG
60		231
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	232	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
62	from wherever your confdir points to.	233	from wherever your confdir points to.
63		234
		235	=item cf::wait_for_tick, cf::wait_for_tick_begin
		236
		237	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		238	returns directly I<after> the tick processing (and consequently, can only wake one process
		239	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		240
		241	=item @cf::INVOKE_RESULTS
		242
		243	This array contains the results of the last C<invoke ()> call. When
		244	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		245	that call.
		246
		247	=item %cf::REFLECT
		248
		249	Contains, for each (C++) class name, a hash reference with information
		250	about object members (methods, scalars, arrays and flags) and other
		251	metadata, which is useful for introspection.
		252
64	=back	253	=back
65		254
66	=cut	255	=cut
67		256
68	BEGIN {	257	sub error(@) { LOG llevError, join "", @_ }
69	*CORE::GLOBAL::warn = sub {	258	sub warn (@) { LOG llevWarn , join "", @_ }
		259	sub info (@) { LOG llevInfo , join "", @_ }
		260	sub debug(@) { LOG llevDebug, join "", @_ }
		261	sub trace(@) { LOG llevTrace, join "", @_ }
		262
		263	$Coro::State::WARNHOOK = sub {
70	my $msg = join "", @_;	264	my $msg = join "", @_;
		265
71	$msg .= "\n"	266	$msg .= "\n"
72	unless $msg =~ /\n$/;	267	unless $msg =~ /\n$/;
73		268
74	print STDERR "cfperl: $msg";	269	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
75	LOG llevError, "cfperl: $msg";
76	};
77	}
78		270
		271	LOG llevWarn, $msg;
		272	};
		273
		274	$Coro::State::DIEHOOK = sub {
		275	return unless $^S eq 0; # "eq", not "=="
		276
		277	error Carp::longmess $_[0];
		278
		279	if (in_main) {#d#
		280	error "DIEHOOK called in main context, Coro bug?\n";#d#
		281	return;#d#
		282	}#d#
		283
		284	# kill coroutine otherwise
		285	Coro::terminate
		286	};
		287
		288	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		289	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		290	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		291	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		292	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		293	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	294	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
80		295
81	# we bless all objects into (empty) derived classes to force a method lookup	296	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	297	# within the Safe compartment.
83	for my $pkg (qw(	298	for my $pkg (qw(
		299	cf::global cf::attachable
84	cf::object cf::object::player	300	cf::object cf::object::player
85	cf::client_socket cf::player	301	cf::client cf::player
86	cf::arch cf::living	302	cf::arch cf::living
		303	cf::map cf::mapspace
87	cf::map cf::party cf::region	304	cf::party cf::region
88	)) {	305	)) {
89	no strict 'refs';
90	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	306	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
91	}	307	}
92		308
93	$Event::DIED = sub {	309	$EV::DIED = sub {
94	warn "error in event callback: @_";	310	Carp::cluck "error in event callback: @_";
95	};	311	};
96		312
97	my %ext_pkg;	313	#############################################################################
98	my @exts;
99	my @hook;
100		314
101	=head2 UTILITY FUNCTIONS	315	=head2 UTILITY FUNCTIONS
102		316
103	=over 4	317	=over 4
104		318
105	=cut	319	=item dumpval $ref
106		320
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	321	=cut
108		322
		323	sub dumpval {
		324	eval {
		325	local $SIG{__DIE__};
		326	my $d;
		327	if (1) {
		328	$d = new Data::Dumper([$_[0]], ["*var"]);
		329	$d->Terse(1);
		330	$d->Indent(2);
		331	$d->Quotekeys(0);
		332	$d->Useqq(1);
		333	#$d->Bless(...);
		334	$d->Seen($_[1]) if @_ > 1;
		335	$d = $d->Dump();
		336	}
		337	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		338	$d
		339	} || "[unable to dump $_[0]: '$@']";
		340	}
		341
109	=item $ref = cf::from_json $json	342	=item $ref = cf::decode_json $json
110		343
111	Converts a JSON string into the corresponding perl data structure.	344	Converts a JSON string into the corresponding perl data structure.
112		345
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	346	=item $json = cf::encode_json $ref
121		347
122	Converts a perl data structure into its JSON representation.	348	Converts a perl data structure into its JSON representation.
123		349
124	=cut	350	=cut
125		351
126	sub to_json($) {	352	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	353
128	JSON::Syck::Dump $_[0]	354	sub encode_json($) { $json_coder->encode ($_[0]) }
		355	sub decode_json($) { $json_coder->decode ($_[0]) }
		356
		357	=item cf::post_init { BLOCK }
		358
		359	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		360	but I<before> the server starts ticking again.
		361
		362	The cdoeblock will have a single boolean argument to indicate whether this
		363	is a reload or not.
		364
		365	=cut
		366
		367	sub post_init(&) {
		368	push @POST_INIT, shift;
		369	}
		370
		371	=item cf::lock_wait $string
		372
		373	Wait until the given lock is available. See cf::lock_acquire.
		374
		375	=item my $lock = cf::lock_acquire $string
		376
		377	Wait until the given lock is available and then acquires it and returns
		378	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		379	for example when the coroutine gets canceled), the lock is automatically
		380	returned.
		381
		382	Locks are *not* recursive, locking from the same coro twice results in a
		383	deadlocked coro.
		384
		385	Lock names should begin with a unique identifier (for example, cf::map::find
		386	uses map_find and cf::map::load uses map_load).
		387
		388	=item $locked = cf::lock_active $string
		389
		390	Return true if the lock is currently active, i.e. somebody has locked it.
		391
		392	=cut
		393
		394	our $LOCKS = new Coro::SemaphoreSet;
		395
		396	sub lock_wait($) {
		397	$LOCKS->wait ($_[0]);
		398	}
		399
		400	sub lock_acquire($) {
		401	$LOCKS->guard ($_[0])
		402	}
		403
		404	sub lock_active($) {
		405	$LOCKS->count ($_[0]) < 1
		406	}
		407
		408	sub freeze_mainloop {
		409	tick_inhibit_inc;
		410
		411	&Guard::guard (\&tick_inhibit_dec);
		412	}
		413
		414	=item cf::periodic $interval, $cb
		415
		416	Like EV::periodic, but randomly selects a starting point so that the actions
		417	get spread over time.
		418
		419	=cut
		420
		421	sub periodic($$) {
		422	my ($interval, $cb) = @_;
		423
		424	my $start = rand List::Util::min 180, $interval;
		425
		426	EV::periodic $start, $interval, 0, $cb
		427	}
		428
		429	=item cf::get_slot $time[, $priority[, $name]]
		430
		431	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		432	This call blocks and returns only when you have at least C<$time> seconds
		433	of cpu time till the next tick. The slot is only valid till the next cede.
		434
		435	The optional C<$name> can be used to identify the job to run. It might be
		436	used for statistical purposes and should identify the same time-class.
		437
		438	Useful for short background jobs.
		439
		440	=cut
		441
		442	our @SLOT_QUEUE;
		443	our $SLOT_QUEUE;
		444	our $SLOT_DECAY = 0.9;
		445
		446	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		447	$SLOT_QUEUE = Coro::async {
		448	$Coro::current->desc ("timeslot manager");
		449
		450	my $signal = new Coro::Signal;
		451	my $busy;
		452
		453	while () {
		454	next_job:
		455
		456	my $avail = cf::till_tick;
		457
		458	for (0 .. $#SLOT_QUEUE) {
		459	if ($SLOT_QUEUE[$_][0] <= $avail) {
		460	$busy = 0;
		461	my $job = splice @SLOT_QUEUE, $_, 1, ();
		462	$job->[2]->send;
		463	Coro::cede;
		464	goto next_job;
		465	} else {
		466	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		467	}
		468	}
		469
		470	if (@SLOT_QUEUE) {
		471	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		472	push @cf::WAIT_FOR_TICK, $signal;
		473	$signal->wait;
		474	} else {
		475	$busy = 0;
		476	Coro::schedule;
		477	}
		478	}
		479	};
		480
		481	sub get_slot($;$$) {
		482	return if tick_inhibit || $Coro::current == $Coro::main;
		483
		484	my ($time, $pri, $name) = @_;
		485
		486	$time = clamp $time, 0.01, $TICK * .6;
		487
		488	my $sig = new Coro::Signal;
		489
		490	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		491	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		492	$SLOT_QUEUE->ready;
		493	$sig->wait;
		494	}
		495
		496	=item cf::async { BLOCK }
		497
		498	Currently the same as Coro::async_pool, meaning you cannot use
		499	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		500	thing you are allowed to do is call C<prio> on it.
		501
		502	=cut
		503
		504	BEGIN { *async = \&Coro::async_pool }
		505
		506	=item cf::sync_job { BLOCK }
		507
		508	The design of Deliantra requires that the main coroutine ($Coro::main)
		509	is always able to handle events or runnable, as Deliantra is only
		510	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		511	acceptable.
		512
		513	If it must be done, put the blocking parts into C<sync_job>. This will run
		514	the given BLOCK in another coroutine while waiting for the result. The
		515	server will be frozen during this time, so the block should either finish
		516	fast or be very important.
		517
		518	=cut
		519
		520	sub sync_job(&) {
		521	my ($job) = @_;
		522
		523	if (in_main) {
		524	my $time = AE::time;
		525
		526	# this is the main coro, too bad, we have to block
		527	# till the operation succeeds, freezing the server :/
		528
		529	#LOG llevError, Carp::longmess "sync job";#d#
		530
		531	my $freeze_guard = freeze_mainloop;
		532
		533	my $busy = 1;
		534	my @res;
		535
		536	(async {
		537	$Coro::current->desc ("sync job coro");
		538	@res = eval { $job->() };
		539	error $@ if $@;
		540	undef $busy;
		541	})->prio (Coro::PRIO_MAX);
		542
		543	while ($busy) {
		544	if (Coro::nready) {
		545	Coro::cede_notself;
		546	} else {
		547	EV::loop EV::LOOP_ONESHOT;
		548	}
		549	}
		550
		551	my $time = AE::time - $time;
		552
		553	$TICK_START += $time; # do not account sync jobs to server load
		554
		555	wantarray ? @res : $res[0]
		556	} else {
		557	# we are in another coroutine, how wonderful, everything just works
		558
		559	$job->()
		560	}
		561	}
		562
		563	=item $coro = cf::async_ext { BLOCK }
		564
		565	Like async, but this coro is automatically being canceled when the
		566	extension calling this is being unloaded.
		567
		568	=cut
		569
		570	sub async_ext(&) {
		571	my $cb = shift;
		572
		573	my $coro = &Coro::async ($cb);
		574
		575	$coro->on_destroy (sub {
		576	delete $EXT_CORO{$coro+0};
		577	});
		578	$EXT_CORO{$coro+0} = $coro;
		579
		580	$coro
		581	}
		582
		583	=item fork_call { }, $args
		584
		585	Executes the given code block with the given arguments in a seperate
		586	process, returning the results. Everything must be serialisable with
		587	Coro::Storable. May, of course, block. Note that the executed sub may
		588	never block itself or use any form of event handling.
		589
		590	=cut
		591
		592	sub fork_call(&@) {
		593	my ($cb, @args) = @_;
		594
		595	# we seemingly have to make a local copy of the whole thing,
		596	# otherwise perl prematurely frees the stuff :/
		597	# TODO: investigate and fix (likely this will be rather laborious)
		598
		599	my @res = Coro::Util::fork_eval {
		600	reset_signals;
		601	&$cb
		602	}, @args;
		603
		604	wantarray ? @res : $res[-1]
		605	}
		606
		607	sub objinfo {
		608	(
		609	"counter value" => cf::object::object_count,
		610	"objects created" => cf::object::create_count,
		611	"objects destroyed" => cf::object::destroy_count,
		612	"freelist size" => cf::object::free_count,
		613	"allocated objects" => cf::object::objects_size,
		614	"active objects" => cf::object::actives_size,
		615	)
		616	}
		617
		618	=item $coin = coin_from_name $name
		619
		620	=cut
		621
		622	our %coin_alias = (
		623	"silver" => "silvercoin",
		624	"silvercoin" => "silvercoin",
		625	"silvercoins" => "silvercoin",
		626	"gold" => "goldcoin",
		627	"goldcoin" => "goldcoin",
		628	"goldcoins" => "goldcoin",
		629	"platinum" => "platinacoin",
		630	"platinumcoin" => "platinacoin",
		631	"platinumcoins" => "platinacoin",
		632	"platina" => "platinacoin",
		633	"platinacoin" => "platinacoin",
		634	"platinacoins" => "platinacoin",
		635	"royalty" => "royalty",
		636	"royalties" => "royalty",
		637	);
		638
		639	sub coin_from_name($) {
		640	$coin_alias{$_[0]}
		641	? cf::arch::find $coin_alias{$_[0]}
		642	: undef
		643	}
		644
		645	=item $value = cf::db_get $family => $key
		646
		647	Returns a single value from the environment database.
		648
		649	=item cf::db_put $family => $key => $value
		650
		651	Stores the given C<$value> in the family. It can currently store binary
		652	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		653
		654	=item $db = cf::db_table "name"
		655
		656	Create and/or open a new database table. The string must not be "db" and must be unique
		657	within each server.
		658
		659	=cut
		660
		661	sub db_table($) {
		662	cf::error "db_get called from main context"
		663	if $Coro::current == $Coro::main;
		664
		665	my ($name) = @_;
		666	my $db = BDB::db_create $DB_ENV;
		667
		668	eval {
		669	$db->set_flags (BDB::CHKSUM);
		670
		671	utf8::encode $name;
		672	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		673	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		674	cf::cleanup "db_open(db): $!" if $!;
		675	};
		676	cf::cleanup "db_open(db): $@" if $@;
		677
		678	$db
		679	}
		680
		681	our $DB;
		682
		683	sub db_init {
		684	$DB ||= db_table "db";
		685	}
		686
		687	sub db_get($$) {
		688	my $key = "$_[0]/$_[1]";
		689
		690	cf::error "db_get called from main context"
		691	if $Coro::current == $Coro::main;
		692
		693	BDB::db_get $DB, undef, $key, my $data;
		694
		695	$! ? ()
		696	: $data
		697	}
		698
		699	sub db_put($$$) {
		700	BDB::dbreq_pri 4;
		701	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		702	}
		703
		704	=item cf::cache $id => [$paths...], $processversion => $process
		705
		706	Generic caching function that returns the value of the resource $id,
		707	caching and regenerating as required.
		708
		709	This function can block.
		710
		711	=cut
		712
		713	sub cache {
		714	my ($id, $src, $processversion, $process) = @_;
		715
		716	my $meta =
		717	join "\x00",
		718	$processversion,
		719	map {
		720	aio_stat $_
		721	and Carp::croak "$_: $!";
		722
		723	($_, (stat _)[7,9])
		724	} @$src;
		725
		726	my $dbmeta = db_get cache => "$id/meta";
		727	if ($dbmeta ne $meta) {
		728	# changed, we may need to process
		729
		730	my @data;
		731	my $md5;
		732
		733	for (0 .. $#$src) {
		734	0 <= aio_load $src->[$_], $data[$_]
		735	or Carp::croak "$src->[$_]: $!";
		736	}
		737
		738	# if processing is expensive, check
		739	# checksum first
		740	if (1) {
		741	$md5 =
		742	join "\x00",
		743	$processversion,
		744	map {
		745	cf::cede_to_tick;
		746	($src->[$_], Digest::MD5::md5_hex $data[$_])
		747	} 0.. $#$src;
		748
		749
		750	my $dbmd5 = db_get cache => "$id/md5";
		751	if ($dbmd5 eq $md5) {
		752	db_put cache => "$id/meta", $meta;
		753
		754	return db_get cache => "$id/data";
		755	}
		756	}
		757
		758	my $t1 = Time::HiRes::time;
		759	my $data = $process->(\@data);
		760	my $t2 = Time::HiRes::time;
		761
		762	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		763
		764	db_put cache => "$id/data", $data;
		765	db_put cache => "$id/md5" , $md5;
		766	db_put cache => "$id/meta", $meta;
		767
		768	return $data;
		769	}
		770
		771	db_get cache => "$id/data"
		772	}
		773
		774	=item cf::datalog type => key => value, ...
		775
		776	Log a datalog packet of the given type with the given key-value pairs.
		777
		778	=cut
		779
		780	sub datalog($@) {
		781	my ($type, %kv) = @_;
		782	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	783	}
130		784
131	=back	785	=back
132		786
133	=cut	787	=cut
134		788
135	#############################################################################	789	#############################################################################
136		790
137	=head2 EVENTS AND OBJECT ATTACHMENTS	791	=head2 ATTACHABLE OBJECTS
		792
		793	Many objects in deliantra are so-called attachable objects. That means you can
		794	attach callbacks/event handlers (a collection of which is called an "attachment")
		795	to it. All such attachable objects support the following methods.
		796
		797	In the following description, CLASS can be any of C<global>, C<object>
		798	C<player>, C<client> or C<map> (i.e. the attachable objects in
		799	Deliantra).
138		800
139	=over 4	801	=over 4
140		802
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)	803	=item $attachable->attach ($attachment, key => $value...)
154		804
155	=item $map->detach ($attachment)	805	=item $attachable->detach ($attachment)
156		806
157	Attach/detach a pre-registered attachment to a map.	807	Attach/detach a pre-registered attachment to a specific object and give it
		808	the specified key/value pairs as arguments.
158		809
159	=item $bool = $object->attached ($name)	810	Example, attach a minesweeper attachment to the given object, making it a
		811	10x10 minesweeper game:
160		812
161	=item $bool = $player->attached ($name)	813	$obj->attach (minesweeper => width => 10, height => 10);
162		814
163	=item $bool = $map->attached ($name)	815	=item $bool = $attachable->attached ($name)
164		816
165	Checks wether the named attachment is currently attached to the object.	817	Checks wether the named attachment is currently attached to the object.
166		818
167	=item cf::attach_global ...	819	=item cf::CLASS->attach ...
168		820
169	Attach handlers for global events.	821	=item cf::CLASS->detach ...
170		822
171	This and all following C<attach_*>-functions expect any number of the	823	Define an anonymous attachment and attach it to all objects of the given
172	following handler/hook descriptions:	824	CLASS. See the next function for an explanation of its arguments.
		825
		826	You can attach to global events by using the C<cf::global> class.
		827
		828	Example, log all player logins:
		829
		830	cf::player->attach (
		831	on_login => sub {
		832	my ($pl) = @_;
		833	...
		834	},
		835	);
		836
		837	Example, attach to the jeweler skill:
		838
		839	cf::object->attach (
		840	type => cf::SKILL,
		841	subtype => cf::SK_JEWELER,
		842	on_use_skill => sub {
		843	my ($sk, $ob, $part, $dir, $msg) = @_;
		844	...
		845	},
		846	);
		847
		848	=item cf::CLASS::attachment $name, ...
		849
		850	Register an attachment by C<$name> through which attachable objects of the
		851	given CLASS can refer to this attachment.
		852
		853	Some classes such as deliantra maps and objects can specify attachments
		854	that are attached at load/instantiate time, thus the need for a name.
		855
		856	These calls expect any number of the following handler/hook descriptions:
173		857
174	=over 4	858	=over 4
175		859
176	=item prio => $number	860	=item prio => $number
177		861
…		…
179	by another C<prio> setting). Lower priority handlers get executed	863	by another C<prio> setting). Lower priority handlers get executed
180	earlier. The default priority is C<0>, and many built-in handlers are	864	earlier. The default priority is C<0>, and many built-in handlers are
181	registered at priority C<-1000>, so lower priorities should not be used	865	registered at priority C<-1000>, so lower priorities should not be used
182	unless you know what you are doing.	866	unless you know what you are doing.
183		867
		868	=item type => $type
		869
		870	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		871	given type of objects only (the additional parameter C<subtype> can be
		872	used to further limit to the given subtype).
		873
184	=item on_I<event> => \&cb	874	=item on_I<event> => \&cb
185		875
186	Call the given code reference whenever the named event happens (event is	876	Call the given code reference whenever the named event happens (event is
187	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	877	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
188	handlers are recognised generally depends on the type of object these	878	handlers are recognised generally depends on the type of object these
…		…
197	package and register them. Only handlers for eevents supported by the	887	package and register them. Only handlers for eevents supported by the
198	object/class are recognised.	888	object/class are recognised.
199		889
200	=back	890	=back
201		891
202	=item cf::attach_to_type $object_type, $subtype, ...	892	Example, define an attachment called "sockpuppet" that calls the given
		893	event handler when a monster attacks:
203		894
204	Attach handlers for a specific object type (e.g. TRANSPORT) and	895	cf::object::attachment sockpuppet =>
205	subtype. If C<$subtype> is zero or undef, matches all objects of the given	896	on_skill_attack => sub {
206	type.	897	my ($self, $victim) = @_;
207		898	...
208	=item cf::attach_to_objects ...
209
210	Attach handlers to all objects. Do not use this except for debugging or
211	very rare events, as handlers are (obviously) called for I<all> objects in
212	the game.
213
214	=item cf::attach_to_players ...
215
216	Attach handlers to all players.
217
218	=item cf::attach_to_maps ...
219
220	Attach handlers to all maps.
221
222	=item cf:register_attachment $name, ...
223
224	Register an attachment by name through which objects can refer to this
225	attachment.
226
227	=item cf:register_player_attachment $name, ...
228
229	Register an attachment by name through which players can refer to this
230	attachment.
231
232	=item cf:register_map_attachment $name, ...
233
234	Register an attachment by name through which maps can refer to this
235	attachment.
236
237	=cut
238
239	# the following variables are defined in .xs and must not be re-created
240	our @CB_GLOBAL = (); # registry for all global events
241	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
242	our @CB_PLAYER = ();
243	our @CB_TYPE = (); # registry for type (cf-object class) based events
244	our @CB_MAP = ();
245
246	my %attachment;
247
248	sub _attach_cb($\%$$$) {
249	my ($registry, $undo, $event, $prio, $cb) = @_;
250
251	use sort 'stable';
252
253	$cb = [$prio, $cb];
254
255	@{$registry->[$event]} = sort
256	{ $a->[0] cmp $b->[0] }
257	@{$registry->[$event] || []}, $cb;
258
259	push @{$undo->{cb}}, [$event, $cb];
260	}
261
262	# attach handles attaching event callbacks
263	# the only thing the caller has to do is pass the correct
264	# registry (== where the callback attaches to).
265	sub _attach(\@$@) {
266	my ($registry, $klass, @arg) = @_;
267
268	my $prio = 0;
269
270	my %undo = (
271	registry => $registry,
272	cb => [],
273	);
274
275	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
276
277	while (@arg) {
278	my $type = shift @arg;
279
280	if ($type eq "prio") {
281	$prio = shift @arg;
282
283	} elsif ($type eq "package") {
284	my $pkg = shift @arg;
285
286	while (my ($name, $id) = each %cb_id) {
287	if (my $cb = $pkg->can ($name)) {
288	_attach_cb $registry, %undo, $id, $prio, $cb;
289	}
290	}	899	}
291
292	} elsif (exists $cb_id{$type}) {
293	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
294
295	} elsif (ref $type) {
296	warn "attaching objects not supported, ignoring.\n";
297
298	} else {
299	shift @arg;
300	warn "attach argument '$type' not supported, ignoring.\n";
301	}
302	}
303
304	\%undo
305	}
306
307	sub _attach_attachment {
308	my ($obj, $name, %arg) = @_;
309
310	return if exists $obj->{_attachment}{$name};
311
312	my $res;
313
314	if (my $attach = $attachment{$name}) {
315	my $registry = $obj->registry;
316
317	for (@$attach) {
318	my ($klass, @attach) = @$_;
319	$res = _attach @$registry, $klass, @attach;
320	}
321
322	$obj->{$name} = \%arg;
323	} else {
324	warn "object uses attachment '$name' that is not available, postponing.\n";
325	}
326
327	$obj->{_attachment}{$name} = undef;
328
329	$res->{attachment} = $name;
330	$res
331	}
332
333	*cf::object::attach =
334	*cf::player::attach =
335	*cf::map::attach = sub {
336	my ($obj, $name, %arg) = @_;
337
338	_attach_attachment $obj, $name, %arg;
339	};
340
341	# all those should be optimised
342	*cf::object::detach =
343	*cf::player::detach =
344	*cf::map::detach = sub {
345	my ($obj, $name) = @_;
346
347	delete $obj->{_attachment}{$name};
348	reattach ($obj);
349	};
350
351	*cf::object::attached =
352	*cf::player::attached =
353	*cf::map::attached = sub {
354	my ($obj, $name) = @_;
355
356	exists $obj->{_attachment}{$name}
357	};
358
359	sub attach_global {
360	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
361	}
362
363	sub attach_to_type {
364	my $type = shift;
365	my $subtype = shift;
366
367	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
368	}
369
370	sub attach_to_objects {
371	_attach @CB_OBJECT, KLASS_OBJECT, @_
372	}
373
374	sub attach_to_players {
375	_attach @CB_PLAYER, KLASS_PLAYER, @_
376	}
377
378	sub attach_to_maps {
379	_attach @CB_MAP, KLASS_MAP, @_
380	}
381
382	sub register_attachment {
383	my $name = shift;
384
385	$attachment{$name} = [[KLASS_OBJECT, @_]];
386	}
387
388	sub register_player_attachment {
389	my $name = shift;
390
391	$attachment{$name} = [[KLASS_PLAYER, @_]];
392	}
393
394	sub register_map_attachment {
395	my $name = shift;
396
397	$attachment{$name} = [[KLASS_MAP, @_]];
398	}
399
400	our $override;
401	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
402
403	sub override {
404	$override = 1;
405	@invoke_results = ();
406	}
407
408	sub do_invoke {
409	my $event = shift;
410	my $callbacks = shift;
411
412	@invoke_results = ();
413
414	local $override;
415
416	for (@$callbacks) {
417	eval { &{$_->[1]} };
418
419	if ($@) {
420	warn "$@";
421	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
422	override;
423	}
424
425	return 1 if $override;
426	}
427
428	0	900	}
429	}
430		901
431	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	902	=item $attachable->valid
432
433	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
434
435	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
436
437	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
438
439	Generate a global/object/player/map-specific event with the given arguments.
440
441	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
442	removed in future versions), and there is no public API to access override
443	results (if you must, access C<@cf::invoke_results> directly).
444
445	=back
446
447	=cut
448
449	#############################################################################
450
451	=head2 METHODS VALID FOR ALL CORE OBJECTS
452
453	=over 4
454
455	=item $object->valid, $player->valid, $map->valid
456		903
457	Just because you have a perl object does not mean that the corresponding	904	Just because you have a perl object does not mean that the corresponding
458	C-level object still exists. If you try to access an object that has no	905	C-level object still exists. If you try to access an object that has no
459	valid C counterpart anymore you get an exception at runtime. This method	906	valid C counterpart anymore you get an exception at runtime. This method
460	can be used to test for existence of the C object part without causing an	907	can be used to test for existence of the C object part without causing an
461	exception.	908	exception.
462		909
		910	=cut
		911
		912	# the following variables are defined in .xs and must not be re-created
		913	our @CB_GLOBAL = (); # registry for all global events
		914	our @CB_ATTACHABLE = (); # registry for all attachables
		915	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		916	our @CB_PLAYER = ();
		917	our @CB_CLIENT = ();
		918	our @CB_TYPE = (); # registry for type (cf-object class) based events
		919	our @CB_MAP = ();
		920
		921	my %attachment;
		922
		923	sub cf::attachable::thawer_merge {
		924	# simply override everything except _meta
		925	local $_[0]{_meta};
		926	%{$_[0]} = %{$_[1]};
		927	}
		928
		929	sub _attach_cb($$$$) {
		930	my ($registry, $event, $prio, $cb) = @_;
		931
		932	use sort 'stable';
		933
		934	$cb = [$prio, $cb];
		935
		936	@{$registry->[$event]} = sort
		937	{ $a->[0] cmp $b->[0] }
		938	@{$registry->[$event] || []}, $cb;
		939	}
		940
		941	# hack
		942	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		943
		944	# attach handles attaching event callbacks
		945	# the only thing the caller has to do is pass the correct
		946	# registry (== where the callback attaches to).
		947	sub _attach {
		948	my ($registry, $klass, @arg) = @_;
		949
		950	my $object_type;
		951	my $prio = 0;
		952	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		953
		954	#TODO: get rid of this hack
		955	if ($attachable_klass{$klass}) {
		956	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		957	}
		958
		959	while (@arg) {
		960	my $type = shift @arg;
		961
		962	if ($type eq "prio") {
		963	$prio = shift @arg;
		964
		965	} elsif ($type eq "type") {
		966	$object_type = shift @arg;
		967	$registry = $CB_TYPE[$object_type] ||= [];
		968
		969	} elsif ($type eq "subtype") {
		970	defined $object_type or Carp::croak "subtype specified without type";
		971	my $object_subtype = shift @arg;
		972	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		973
		974	} elsif ($type eq "package") {
		975	my $pkg = shift @arg;
		976
		977	while (my ($name, $id) = each %cb_id) {
		978	if (my $cb = $pkg->can ($name)) {
		979	_attach_cb $registry, $id, $prio, $cb;
		980	}
		981	}
		982
		983	} elsif (exists $cb_id{$type}) {
		984	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		985
		986	} elsif (ref $type) {
		987	error "attaching objects not supported, ignoring.\n";
		988
		989	} else {
		990	shift @arg;
		991	error "attach argument '$type' not supported, ignoring.\n";
		992	}
		993	}
		994	}
		995
		996	sub _object_attach {
		997	my ($obj, $name, %arg) = @_;
		998
		999	return if exists $obj->{_attachment}{$name};
		1000
		1001	if (my $attach = $attachment{$name}) {
		1002	my $registry = $obj->registry;
		1003
		1004	for (@$attach) {
		1005	my ($klass, @attach) = @$_;
		1006	_attach $registry, $klass, @attach;
		1007	}
		1008
		1009	$obj->{$name} = \%arg;
		1010	} else {
		1011	info "object uses attachment '$name' which is not available, postponing.\n";
		1012	}
		1013
		1014	$obj->{_attachment}{$name} = undef;
		1015	}
		1016
		1017	sub cf::attachable::attach {
		1018	if (ref $_[0]) {
		1019	_object_attach @_;
		1020	} else {
		1021	_attach shift->_attach_registry, @_;
		1022	}
		1023	_recalc_want;
		1024	};
		1025
		1026	# all those should be optimised
		1027	sub cf::attachable::detach {
		1028	my ($obj, $name) = @_;
		1029
		1030	if (ref $obj) {
		1031	delete $obj->{_attachment}{$name};
		1032	reattach ($obj);
		1033	} else {
		1034	Carp::croak "cannot, currently, detach class attachments";
		1035	}
		1036	_recalc_want;
		1037	};
		1038
		1039	sub cf::attachable::attached {
		1040	my ($obj, $name) = @_;
		1041
		1042	exists $obj->{_attachment}{$name}
		1043	}
		1044
		1045	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1046	eval "#line " . __LINE__ . " 'cf.pm'
		1047	sub cf::\L$klass\E::_attach_registry {
		1048	(\\\@CB_$klass, KLASS_$klass)
		1049	}
		1050
		1051	sub cf::\L$klass\E::attachment {
		1052	my \$name = shift;
		1053
		1054	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1055	}
		1056	";
		1057	die if $@;
		1058	}
		1059
		1060	our $override;
		1061	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1062
		1063	sub override {
		1064	$override = 1;
		1065	@INVOKE_RESULTS = (@_);
		1066	}
		1067
		1068	sub do_invoke {
		1069	my $event = shift;
		1070	my $callbacks = shift;
		1071
		1072	@INVOKE_RESULTS = ();
		1073
		1074	local $override;
		1075
		1076	for (@$callbacks) {
		1077	eval { &{$_->[1]} };
		1078
		1079	if ($@) {
		1080	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1081	override;
		1082	}
		1083
		1084	return 1 if $override;
		1085	}
		1086
		1087	0
		1088	}
		1089
		1090	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1091
		1092	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1093
		1094	Generate an object-specific event with the given arguments.
		1095
		1096	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1097	removed in future versions), and there is no public API to access override
		1098	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1099
463	=back	1100	=back
464		1101
465	=cut	1102	=cut
466
467	*cf::object::valid =
468	*cf::player::valid =
469	*cf::map::valid = \&cf::_valid;
470		1103
471	#############################################################################	1104	#############################################################################
472	# object support	1105	# object support
473		1106
474	sub instantiate {	1107	sub _object_equal($$);
		1108	sub _object_equal($$) {
		1109	my ($a, $b) = @_;
		1110
		1111	return 0 unless (ref $a) eq (ref $b);
		1112
		1113	if ("HASH" eq ref $a) {
		1114	my @ka = keys %$a;
		1115	my @kb = keys %$b;
		1116
		1117	return 0 if @ka != @kb;
		1118
		1119	for (0 .. $#ka) {
		1120	return 0 unless $ka[$_] eq $kb[$_];
		1121	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1122	}
		1123
		1124	} elsif ("ARRAY" eq ref $a) {
		1125
		1126	return 0 if @$a != @$b;
		1127
		1128	for (0 .. $#$a) {
		1129	return 0 unless _object_equal $a->[$_], $b->[$_];
		1130	}
		1131
		1132	} elsif ($a ne $b) {
		1133	return 0;
		1134	}
		1135
		1136	1
		1137	}
		1138
		1139	our $SLOW_MERGES;#d#
		1140	sub _can_merge {
475	my ($obj, $data) = @_;	1141	my ($ob1, $ob2) = @_;
476		1142
477	$data = from_json $data;	1143	++$SLOW_MERGES;#d#
478		1144
479	for (@$data) {	1145	# we do the slow way here
480	my ($name, $args) = @$_;	1146	return _object_equal $ob1, $ob2
481
482	$obj->attach ($name, %{$args || {} });
483	}
484	}	1147	}
485		1148
486	# basically do the same as instantiate, without calling instantiate
487	sub reattach {	1149	sub reattach {
		1150	# basically do the same as instantiate, without calling instantiate
488	my ($obj) = @_;	1151	my ($obj) = @_;
		1152
		1153	# no longer needed after getting rid of delete_package?
		1154	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1155
489	my $registry = $obj->registry;	1156	my $registry = $obj->registry;
490		1157
491	@$registry = ();	1158	@$registry = ();
492		1159
493	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1160	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
494		1161
495	for my $name (keys %{ $obj->{_attachment} || {} }) {	1162	for my $name (keys %{ $obj->{_attachment} || {} }) {
496	if (my $attach = $attachment{$name}) {	1163	if (my $attach = $attachment{$name}) {
497	for (@$attach) {	1164	for (@$attach) {
498	my ($klass, @attach) = @$_;	1165	my ($klass, @attach) = @$_;
499	_attach @$registry, $klass, @attach;	1166	_attach $registry, $klass, @attach;
500	}	1167	}
501	} else {	1168	} else {
502	warn "object uses attachment '$name' that is not available, postponing.\n";	1169	info "object uses attachment '$name' that is not available, postponing.\n";
503	}
504	}
505	}
506
507	sub object_freezer_save {
508	my ($filename, $rdata, $objs) = @_;
509
510	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;
513
514	if (open my $fh, ">:raw", "$filename~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
522	close $fh;
523	rename "$filename.pst~", "$filename.pst";
524	} else {
525	unlink "$filename.pst";
526	}	1170	}
527
528	rename "$filename~", $filename;
529	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;
534	unlink "$filename.pst";
535	}	1171	}
536	}	1172	}
537		1173
538	sub object_freezer_as_string {	1174	cf::attachable->attach (
539	my ($rdata, $objs) = @_;
540
541	use Data::Dumper;
542
543	$$rdata . Dumper $objs
544	}
545
546	sub object_thawer_load {
547	my ($filename) = @_;
548
549	local $/;
550
551	my $av;
552
553	#TODO: use sysread etc.
554	if (open my $data, "<:raw:perlio", $filename) {
555	$data = <$data>;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };
558	}
559	return ($data, $av);
560	}
561
562	()
563	}
564
565	attach_to_objects
566	prio => -1000000,	1175	prio => -1000000,
		1176	on_instantiate => sub {
		1177	my ($obj, $data) = @_;
		1178
		1179	$data = decode_json $data;
		1180
		1181	for (@$data) {
		1182	my ($name, $args) = @$_;
		1183
		1184	$obj->attach ($name, %{$args || {} });
		1185	}
		1186	},
		1187	on_reattach => \&reattach,
567	on_clone => sub {	1188	on_clone => sub {
568	my ($src, $dst) = @_;	1189	my ($src, $dst) = @_;
569		1190
570	@{$dst->registry} = @{$src->registry};	1191	@{$dst->registry} = @{$src->registry};
571		1192
572	%$dst = %$src;	1193	%$dst = %$src;
573		1194
574	%{$dst->{_attachment}} = %{$src->{_attachment}}	1195	%{$dst->{_attachment}} = %{$src->{_attachment}}
575	if exists $src->{_attachment};	1196	if exists $src->{_attachment};
576	},	1197	},
577	;	1198	);
		1199
		1200	sub object_freezer_save {
		1201	my ($filename, $rdata, $objs) = @_;
		1202
		1203	sync_job {
		1204	if (length $$rdata) {
		1205	utf8::decode (my $decname = $filename);
		1206	trace sprintf "saving %s (%d,%d)\n",
		1207	$decname, length $$rdata, scalar @$objs
		1208	if $VERBOSE_IO;
		1209
		1210	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1211	aio_chmod $fh, SAVE_MODE;
		1212	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1213	if ($cf::USE_FSYNC) {
		1214	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1215	aio_fsync $fh;
		1216	}
		1217	aio_close $fh;
		1218
		1219	if (@$objs) {
		1220	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1221	aio_chmod $fh, SAVE_MODE;
		1222	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1223	aio_write $fh, 0, (length $data), $data, 0;
		1224	if ($cf::USE_FSYNC) {
		1225	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1226	aio_fsync $fh;
		1227	}
		1228	aio_close $fh;
		1229	aio_rename "$filename.pst~", "$filename.pst";
		1230	}
		1231	} else {
		1232	aio_unlink "$filename.pst";
		1233	}
		1234
		1235	aio_rename "$filename~", $filename;
		1236
		1237	$filename =~ s%/[^/]+$%%;
		1238	aio_pathsync $filename if $cf::USE_FSYNC;
		1239	} else {
		1240	error "unable to save objects: $filename~: $!\n";
		1241	}
		1242	} else {
		1243	aio_unlink $filename;
		1244	aio_unlink "$filename.pst";
		1245	}
		1246	};
		1247	}
		1248
		1249	sub object_freezer_as_string {
		1250	my ($rdata, $objs) = @_;
		1251
		1252	use Data::Dumper;
		1253
		1254	$$rdata . Dumper $objs
		1255	}
		1256
		1257	sub object_thawer_load {
		1258	my ($filename) = @_;
		1259
		1260	my ($data, $av);
		1261
		1262	(aio_load $filename, $data) >= 0
		1263	or return;
		1264
		1265	unless (aio_stat "$filename.pst") {
		1266	(aio_load "$filename.pst", $av) >= 0
		1267	or return;
		1268
		1269	my $st = eval { Coro::Storable::thaw $av };
		1270	$av = $st->{objs};
		1271	}
		1272
		1273	utf8::decode (my $decname = $filename);
		1274	trace sprintf "loading %s (%d,%d)\n",
		1275	$decname, length $data, scalar @{$av || []}
		1276	if $VERBOSE_IO;
		1277
		1278	($data, $av)
		1279	}
		1280
		1281	=head2 COMMAND CALLBACKS
		1282
		1283	=over 4
		1284
		1285	=cut
578		1286
579	#############################################################################	1287	#############################################################################
580	# command handling &c	1288	# command handling &c
581		1289
582	=item cf::register_command $name => \&callback($ob,$args);	1290	=item cf::register_command $name => \&callback($ob,$args);
…		…
595	push @{ $COMMAND{$name} }, [$caller, $cb];	1303	push @{ $COMMAND{$name} }, [$caller, $cb];
596	}	1304	}
597		1305
598	=item cf::register_extcmd $name => \&callback($pl,$packet);	1306	=item cf::register_extcmd $name => \&callback($pl,$packet);
599		1307
600	Register a callbackf ro execution when the client sends an extcmd packet.	1308	Register a callback for execution when the client sends an (synchronous)
		1309	extcmd packet. Ext commands will be processed in the order they are
		1310	received by the server, like other user commands. The first argument is
		1311	the logged-in player. Ext commands can only be processed after a player
		1312	has logged in successfully.
601		1313
602	If the callback returns something, it is sent back as if reply was being	1314	If the callback returns something, it is sent back as if reply was being
603	called.	1315	called.
604		1316
		1317	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1318
		1319	Register a callback for execution when the client sends an (asynchronous)
		1320	exticmd packet. Exti commands are processed by the server as soon as they
		1321	are received, i.e. out of order w.r.t. other commands. The first argument
		1322	is a client socket. Exti commands can be received anytime, even before
		1323	log-in.
		1324
		1325	If the callback returns something, it is sent back as if reply was being
		1326	called.
		1327
605	=cut	1328	=cut
606		1329
607	sub register_extcmd {	1330	sub register_extcmd {
608	my ($name, $cb) = @_;	1331	my ($name, $cb) = @_;
609		1332
610	my $caller = caller;
611	#warn "registering extcmd '$name' to '$caller'";
612
613	$EXTCMD{$name} = [$cb, $caller];	1333	$EXTCMD{$name} = $cb;
614	}	1334	}
615		1335
616	attach_to_players	1336	sub register_exticmd {
		1337	my ($name, $cb) = @_;
		1338
		1339	$EXTICMD{$name} = $cb;
		1340	}
		1341
		1342	use File::Glob ();
		1343
		1344	cf::player->attach (
617	on_command => sub {	1345	on_unknown_command => sub {
618	my ($pl, $name, $params) = @_;	1346	my ($pl, $name, $params) = @_;
619		1347
620	my $cb = $COMMAND{$name}	1348	my $cb = $COMMAND{$name}
621	or return;	1349	or return;
622		1350
…		…
627	cf::override;	1355	cf::override;
628	},	1356	},
629	on_extcmd => sub {	1357	on_extcmd => sub {
630	my ($pl, $buf) = @_;	1358	my ($pl, $buf) = @_;
631		1359
632	my $msg = eval { from_json $buf };	1360	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
633		1361
634	if (ref $msg) {	1362	if (ref $msg) {
		1363	my ($type, $reply, @payload) =
		1364	"ARRAY" eq ref $msg
		1365	? @$msg
		1366	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1367
		1368	my @reply;
		1369
635	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1370	if (my $cb = $EXTCMD{$type}) {
636	if (my %reply = $cb->[0]->($pl, $msg)) {	1371	@reply = $cb->($pl, @payload);
637	$pl->ext_reply ($msg->{msgid}, %reply);	1372	}
		1373
		1374	$pl->ext_reply ($reply, @reply)
		1375	if $reply;
		1376
		1377	} else {
		1378	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1379	}
		1380
		1381	cf::override;
		1382	},
		1383	);
		1384
		1385	# "readahead" all extensions
		1386	sub cache_extensions {
		1387	my $grp = IO::AIO::aio_group;
		1388
		1389	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1390	for (grep /\.ext$/, @{$_[0]}) {
		1391	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1392	}
		1393	};
		1394
		1395	$grp
		1396	}
		1397
		1398	sub load_extensions {
		1399	info "loading extensions...";
		1400
		1401	cf::sync_job {
		1402	my %todo;
		1403
		1404	for my $path (<$LIBDIR/*.ext>) {
		1405	next unless -r $path;
		1406
		1407	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1408	my $base = $1;
		1409	my $pkg = $1;
		1410	$pkg =~ s/[^[:word:]]/_/g;
		1411	$pkg = "ext::$pkg";
		1412
		1413	open my $fh, "<:utf8", $path
		1414	or die "$path: $!";
		1415
		1416	my $source = do { local $/; <$fh> };
		1417
		1418	my %ext = (
		1419	path => $path,
		1420	base => $base,
		1421	pkg => $pkg,
		1422	);
		1423
		1424	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1425	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1426
		1427	$ext{source} =
		1428	"package $pkg; use common::sense;\n"
		1429	. "#line 1 \"$path\"\n{\n"
		1430	. $source
		1431	. "\n};\n1";
		1432
		1433	$todo{$base} = \%ext;
		1434	}
		1435
		1436	my $pass = 0;
		1437	my %done;
		1438	while (%todo) {
		1439	my $progress;
		1440
		1441	++$pass;
		1442
		1443	ext:
		1444	while (my ($k, $v) = each %todo) {
		1445	for (split /,\s*/, $v->{meta}{depends}) {
		1446	next ext
		1447	unless exists $done{$_};
		1448	}
		1449
		1450	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1451
		1452	my $active = eval $v->{source};
		1453
		1454	if (length $@) {
		1455	error "$v->{path}: $@\n";
		1456
		1457	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1458	if exists $v->{meta}{mandatory};
		1459
		1460	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1461	delete $todo{$k};
		1462	} else {
		1463	$done{$k} = delete $todo{$k};
		1464	push @EXTS, $v->{pkg};
		1465	$progress = 1;
		1466
		1467	info "$v->{base}: extension inactive.\n"
		1468	unless $active;
638	}	1469	}
639	}	1470	}
640	} else {
641	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
642	}
643		1471
644	cf::override;	1472	unless ($progress) {
645	},	1473	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
646	;
647		1474
648	sub register {	1475	while (my ($k, $v) = each %todo) {
649	my ($base, $pkg) = @_;	1476	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
650		1477	if exists $v->{meta}{mandatory};
651	#TODO	1478	}
652	}
653
654	sub load_extension {
655	my ($path) = @_;
656
657	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
658	my $base = $1;
659	my $pkg = $1;
660	$pkg =~ s/[^[:word:]]/_/g;
661	$pkg = "ext::$pkg";
662
663	warn "loading '$path' into '$pkg'\n";
664
665	open my $fh, "<:utf8", $path
666	or die "$path: $!";
667
668	my $source =
669	"package $pkg; use strict; use utf8;\n"
670	. "#line 1 \"$path\"\n{\n"
671	. (do { local $/; <$fh> })
672	. "\n};\n1";
673
674	eval $source
675	or die $@ ? "$path: $@\n"
676	: "extension disabled.\n";
677
678	push @exts, $pkg;
679	$ext_pkg{$base} = $pkg;
680
681	# no strict 'refs';
682	# @{"$pkg\::ISA"} = ext::;
683
684	register $base, $pkg;
685	}
686
687	sub unload_extension {
688	my ($pkg) = @_;
689
690	warn "removing extension $pkg\n";
691
692	# remove hooks
693	#TODO
694	# for my $idx (0 .. $#PLUGIN_EVENT) {
695	# delete $hook[$idx]{$pkg};
696	# }
697
698	# remove commands
699	for my $name (keys %COMMAND) {
700	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
701
702	if (@cb) {
703	$COMMAND{$name} = \@cb;
704	} else {
705	delete $COMMAND{$name};
706	}
707	}
708
709	# remove extcmds
710	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
711	delete $EXTCMD{$name};
712	}
713
714	if (my $cb = $pkg->can ("unload")) {
715	eval {
716	$cb->($pkg);
717	1	1479	}
718	} or warn "$pkg unloaded, but with errors: $@";	1480	}
719	}	1481	};
720
721	Symbol::delete_package $pkg;
722	}
723
724	sub load_extensions {
725	my $LIBDIR = maps_directory "perl";
726
727	for my $ext (<$LIBDIR/*.ext>) {
728	next unless -r $ext;
729	eval {
730	load_extension $ext;
731	1
732	} or warn "$ext not loaded: $@";
733	}
734	}	1482	}
735		1483
736	#############################################################################	1484	#############################################################################
737	# load/save/clean perl data associated with a map
738		1485
739	*cf::mapsupport::on_clean = sub {	1486	=back
		1487
		1488	=head2 CORE EXTENSIONS
		1489
		1490	Functions and methods that extend core deliantra objects.
		1491
		1492	=cut
		1493
		1494	package cf::player;
		1495
		1496	use Coro::AIO;
		1497
		1498	=head3 cf::player
		1499
		1500	=over 4
		1501
		1502	=item cf::player::num_playing
		1503
		1504	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1505
		1506	=cut
		1507
		1508	sub num_playing {
		1509	scalar grep
		1510	$_->ob->map
		1511	&& !$_->hidden
		1512	&& !$_->ob->flag (cf::FLAG_WIZ),
		1513	cf::player::list
		1514	}
		1515
		1516	=item cf::player::find $login
		1517
		1518	Returns the given player object, loading it if necessary (might block).
		1519
		1520	=cut
		1521
		1522	sub playerdir($) {
		1523	"$PLAYERDIR/"
		1524	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1525	}
		1526
		1527	sub path($) {
		1528	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1529
		1530	(playerdir $login) . "/playerdata"
		1531	}
		1532
		1533	sub find_active($) {
		1534	$cf::PLAYER{$_[0]}
		1535	and $cf::PLAYER{$_[0]}->active
		1536	and $cf::PLAYER{$_[0]}
		1537	}
		1538
		1539	sub exists($) {
740	my ($map) = @_;	1540	my ($login) = @_;
741		1541
742	my $path = $map->tmpname;	1542	$cf::PLAYER{$login}
743	defined $path or return;	1543	or !aio_stat path $login
744
745	unlink "$path.pst";
746	};
747
748	attach_to_maps prio => -10000, package => cf::mapsupport::;
749
750	#############################################################################
751	# load/save perl data associated with player->ob objects
752
753	sub all_objects(@) {
754	@_, map all_objects ($_->inv), @_
755	}	1544	}
756		1545
757	# TODO: compatibility cruft, remove when no longer needed	1546	sub find($) {
758	attach_to_players	1547	return $cf::PLAYER{$_[0]} || do {
		1548	my $login = $_[0];
		1549
		1550	my $guard = cf::lock_acquire "user_find:$login";
		1551
		1552	$cf::PLAYER{$_[0]} || do {
		1553	# rename old playerfiles to new ones
		1554	#TODO: remove when no longer required
		1555	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1556	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1557	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1558	aio_unlink +(playerdir $login) . "/$login.pl";
		1559
		1560	my $f = new_from_file cf::object::thawer path $login
		1561	or return;
		1562
		1563	my $pl = cf::player::load_pl $f
		1564	or return;
		1565
		1566	local $cf::PLAYER_LOADING{$login} = $pl;
		1567	$f->resolve_delayed_derefs;
		1568	$cf::PLAYER{$login} = $pl
		1569	}
		1570	}
		1571	}
		1572
		1573	cf::player->attach (
759	on_load => sub {	1574	on_load => sub {
760	my ($pl, $path) = @_;	1575	my ($pl, $path) = @_;
761		1576
762	for my $o (all_objects $pl->ob) {	1577	# restore slots saved in save, below
763	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1578	my $slots = delete $pl->{_slots};
764	$o->set_ob_key_value ("_perl_data");
765		1579
766	%$o = %{ Storable::thaw pack "H*", $value };	1580	$pl->ob->current_weapon ($slots->[0]);
		1581	$pl->combat_ob ($slots->[1]);
		1582	$pl->ranged_ob ($slots->[2]);
		1583	},
		1584	);
		1585
		1586	sub save($) {
		1587	my ($pl) = @_;
		1588
		1589	return if $pl->{deny_save};
		1590
		1591	my $path = path $pl;
		1592	my $guard = cf::lock_acquire "user_save:$path";
		1593
		1594	return if $pl->{deny_save};
		1595
		1596	aio_mkdir playerdir $pl, 0770;
		1597	$pl->{last_save} = $cf::RUNTIME;
		1598
		1599	cf::get_slot 0.01;
		1600
		1601	# save slots, to be restored later
		1602	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1603
		1604	$pl->save_pl ($path);
		1605	cf::cede_to_tick;
		1606	}
		1607
		1608	sub new($) {
		1609	my ($login) = @_;
		1610
		1611	my $self = create;
		1612
		1613	$self->ob->name ($login);
		1614	$self->{deny_save} = 1;
		1615
		1616	$cf::PLAYER{$login} = $self;
		1617
		1618	$self
		1619	}
		1620
		1621	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1622
		1623	=cut
		1624
		1625	sub send_msg {
		1626	my $ns = shift->ns
		1627	or return;
		1628	$ns->send_msg (@_);
		1629	}
		1630
		1631	=item $pl->quit_character
		1632
		1633	Nukes the player without looking back. If logged in, the connection will
		1634	be destroyed. May block for a long time.
		1635
		1636	=cut
		1637
		1638	sub quit_character {
		1639	my ($pl) = @_;
		1640
		1641	my $name = $pl->ob->name;
		1642
		1643	$pl->{deny_save} = 1;
		1644	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1645
		1646	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1647	$pl->deactivate;
		1648	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1649	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1650	$pl->ns->destroy if $pl->ns;
		1651
		1652	my $path = playerdir $pl;
		1653	my $temp = "$path~$cf::RUNTIME~deleting~";
		1654	aio_rename $path, $temp;
		1655	delete $cf::PLAYER{$pl->ob->name};
		1656	$pl->destroy;
		1657
		1658	my $prefix = qr<^~\Q$name\E/>;
		1659
		1660	# nuke player maps
		1661	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1662
		1663	IO::AIO::aio_rmtree $temp;
		1664	}
		1665
		1666	=item $pl->kick
		1667
		1668	Kicks a player out of the game. This destroys the connection.
		1669
		1670	=cut
		1671
		1672	sub kick {
		1673	my ($pl, $kicker) = @_;
		1674
		1675	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1676	$pl->killer ("kicked");
		1677	$pl->ns->destroy;
		1678	}
		1679
		1680	=item cf::player::list_logins
		1681
		1682	Returns am arrayref of all valid playernames in the system, can take a
		1683	while and may block, so not sync_job-capable, ever.
		1684
		1685	=cut
		1686
		1687	sub list_logins {
		1688	my $dirs = aio_readdir $PLAYERDIR
		1689	or return [];
		1690
		1691	my @logins;
		1692
		1693	for my $login (@$dirs) {
		1694	my $path = path $login;
		1695
		1696	# a .pst is a dead give-away for a valid player
		1697	# if no pst file found, open and chekc for blocked users
		1698	if (aio_stat "$path.pst") {
		1699	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1700	aio_read $fh, 0, 512, my $buf, 0 or next;
		1701	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1702	}
		1703
		1704	utf8::decode $login;
		1705	push @logins, $login;
		1706	}
		1707
		1708	\@logins
		1709	}
		1710
		1711	=item $player->maps
		1712
		1713	=item cf::player::maps $login
		1714
		1715	Returns an arrayref of map paths that are private for this
		1716	player. May block.
		1717
		1718	=cut
		1719
		1720	sub maps($) {
		1721	my ($pl) = @_;
		1722
		1723	$pl = ref $pl ? $pl->ob->name : $pl;
		1724
		1725	my $files = aio_readdir playerdir $pl
		1726	or return;
		1727
		1728	my @paths;
		1729
		1730	for (@$files) {
		1731	utf8::decode $_;
		1732	next if /\.(?:pl|pst)$/;
		1733	next unless /^$PATH_SEP/o;
		1734
		1735	push @paths, cf::map::normalise "~$pl/$_";
		1736	}
		1737
		1738	\@paths
		1739	}
		1740
		1741	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1742
		1743	Expand deliantra pod fragments into protocol xml.
		1744
		1745	=item $player->ext_reply ($msgid, @msg)
		1746
		1747	Sends an ext reply to the player.
		1748
		1749	=cut
		1750
		1751	sub ext_reply($$@) {
		1752	my ($self, $id, @msg) = @_;
		1753
		1754	$self->ns->ext_reply ($id, @msg)
		1755	}
		1756
		1757	=item $player->ext_msg ($type, @msg)
		1758
		1759	Sends an ext event to the client.
		1760
		1761	=cut
		1762
		1763	sub ext_msg($$@) {
		1764	my ($self, $type, @msg) = @_;
		1765
		1766	$self->ns->ext_msg ($type, @msg);
		1767	}
		1768
		1769	=head3 cf::region
		1770
		1771	=over 4
		1772
		1773	=cut
		1774
		1775	package cf::region;
		1776
		1777	=item cf::region::find_by_path $path
		1778
		1779	Tries to decuce the likely region for a map knowing only its path.
		1780
		1781	=cut
		1782
		1783	sub find_by_path($) {
		1784	my ($path) = @_;
		1785
		1786	$path =~ s/^~[^\/]*//; # skip ~login
		1787
		1788	my ($match, $specificity);
		1789
		1790	for my $region (list) {
		1791	if ($region->{match} && $path =~ $region->{match}) {
		1792	($match, $specificity) = ($region, $region->specificity)
		1793	if $region->specificity > $specificity;
		1794	}
		1795	}
		1796
		1797	$match
		1798	}
		1799
		1800	=back
		1801
		1802	=head3 cf::map
		1803
		1804	=over 4
		1805
		1806	=cut
		1807
		1808	package cf::map;
		1809
		1810	use Fcntl;
		1811	use Coro::AIO;
		1812
		1813	use overload
		1814	'""' => \&as_string,
		1815	fallback => 1;
		1816
		1817	our $MAX_RESET = 3600;
		1818	our $DEFAULT_RESET = 3000;
		1819
		1820	sub generate_random_map {
		1821	my ($self, $rmp) = @_;
		1822
		1823	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1824
		1825	# mit "rum" bekleckern, nicht
		1826	$self->_create_random_map (
		1827	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1828	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle}, $rmp->{miningstyle},
		1829	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1830	$rmp->{exit_on_final_map},
		1831	$rmp->{xsize}, $rmp->{ysize},
		1832	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1833	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1834	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1835	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1836	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1837	(cf::region::find $rmp->{region}), $rmp->{custom}
		1838	)
		1839	}
		1840
		1841	=item cf::map->register ($regex, $prio)
		1842
		1843	Register a handler for the map path matching the given regex at the
		1844	givne priority (higher is better, built-in handlers have priority 0, the
		1845	default).
		1846
		1847	=cut
		1848
		1849	sub register {
		1850	my (undef, $regex, $prio) = @_;
		1851	my $pkg = caller;
		1852
		1853	push @{"$pkg\::ISA"}, __PACKAGE__;
		1854
		1855	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1856	}
		1857
		1858	# also paths starting with '/'
		1859	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1860
		1861	sub thawer_merge {
		1862	my ($self, $merge) = @_;
		1863
		1864	# we have to keep some variables in memory intact
		1865	local $self->{path};
		1866	local $self->{load_path};
		1867
		1868	$self->SUPER::thawer_merge ($merge);
		1869	}
		1870
		1871	sub normalise {
		1872	my ($path, $base) = @_;
		1873
		1874	$path = "$path"; # make sure it's a string
		1875
		1876	$path =~ s/\.map$//;
		1877
		1878	# map plan:
		1879	#
		1880	# /! non-realised random map exit (special hack!)
		1881	# {... are special paths that are not being touched
		1882	# ?xxx/... are special absolute paths
		1883	# ?random/... random maps
		1884	# /... normal maps
		1885	# ~user/... per-player map of a specific user
		1886
		1887	$path =~ s/$PATH_SEP/\//go;
		1888
		1889	# treat it as relative path if it starts with
		1890	# something that looks reasonable
		1891	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1892	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1893
		1894	$base =~ s{[^/]+/?$}{};
		1895	$path = "$base/$path";
		1896	}
		1897
		1898	for ($path) {
		1899	redo if s{//}{/};
		1900	redo if s{/\.?/}{/};
		1901	redo if s{/[^/]+/\.\./}{/};
		1902	}
		1903
		1904	$path
		1905	}
		1906
		1907	sub new_from_path {
		1908	my (undef, $path, $base) = @_;
		1909
		1910	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1911
		1912	$path = normalise $path, $base;
		1913
		1914	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1915	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1916	my $self = bless cf::map::new, $pkg;
		1917	$self->{path} = $path; $self->path ($path);
		1918	$self->init; # pass $1 etc.
		1919	return $self;
		1920	}
		1921	}
		1922
		1923	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1924	()
		1925	}
		1926
		1927	sub init {
		1928	my ($self) = @_;
		1929
		1930	$self
		1931	}
		1932
		1933	sub as_string {
		1934	my ($self) = @_;
		1935
		1936	"$self->{path}"
		1937	}
		1938
		1939	# the displayed name, this is a one way mapping
		1940	sub visible_name {
		1941	&as_string
		1942	}
		1943
		1944	# the original (read-only) location
		1945	sub load_path {
		1946	my ($self) = @_;
		1947
		1948	"$MAPDIR/$self->{path}.map"
		1949	}
		1950
		1951	# the temporary/swap location
		1952	sub save_path {
		1953	my ($self) = @_;
		1954
		1955	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1956	"$TMPDIR/$path.map"
		1957	}
		1958
		1959	# the unique path, undef == no special unique path
		1960	sub uniq_path {
		1961	my ($self) = @_;
		1962
		1963	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1964	"$UNIQUEDIR/$path"
		1965	}
		1966
		1967	sub decay_objects {
		1968	my ($self) = @_;
		1969
		1970	return if $self->{deny_reset};
		1971
		1972	$self->do_decay_objects;
		1973	}
		1974
		1975	sub unlink_save {
		1976	my ($self) = @_;
		1977
		1978	utf8::encode (my $save = $self->save_path);
		1979	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1980	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1981	}
		1982
		1983	sub load_header_from($) {
		1984	my ($self, $path) = @_;
		1985
		1986	utf8::encode $path;
		1987	my $f = new_from_file cf::object::thawer $path
		1988	or return;
		1989
		1990	$self->_load_header ($f)
		1991	or return;
		1992
		1993	local $MAP_LOADING{$self->{path}} = $self;
		1994	$f->resolve_delayed_derefs;
		1995
		1996	$self->{load_path} = $path;
		1997
		1998	1
		1999	}
		2000
		2001	sub load_header_orig {
		2002	my ($self) = @_;
		2003
		2004	$self->load_header_from ($self->load_path)
		2005	}
		2006
		2007	sub load_header_temp {
		2008	my ($self) = @_;
		2009
		2010	$self->load_header_from ($self->save_path)
		2011	}
		2012
		2013	sub prepare_temp {
		2014	my ($self) = @_;
		2015
		2016	$self->last_access ((delete $self->{last_access})
		2017	|| $cf::RUNTIME); #d#
		2018	# safety
		2019	$self->{instantiate_time} = $cf::RUNTIME
		2020	if $self->{instantiate_time} > $cf::RUNTIME;
		2021	}
		2022
		2023	sub prepare_orig {
		2024	my ($self) = @_;
		2025
		2026	$self->{load_original} = 1;
		2027	$self->{instantiate_time} = $cf::RUNTIME;
		2028	$self->last_access ($cf::RUNTIME);
		2029	$self->instantiate;
		2030	}
		2031
		2032	sub load_header {
		2033	my ($self) = @_;
		2034
		2035	if ($self->load_header_temp) {
		2036	$self->prepare_temp;
		2037	} else {
		2038	$self->load_header_orig
		2039	or return;
		2040	$self->prepare_orig;
		2041	}
		2042
		2043	$self->{deny_reset} = 1
		2044	if $self->no_reset;
		2045
		2046	$self->default_region (cf::region::find_by_path $self->{path})
		2047	unless $self->default_region;
		2048
		2049	1
		2050	}
		2051
		2052	sub find;
		2053	sub find {
		2054	my ($path, $origin) = @_;
		2055
		2056	cf::cede_to_tick;
		2057
		2058	$path = normalise $path, $origin && $origin->path;
		2059
		2060	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2061	my $guard2 = cf::lock_acquire "map_find:$path";
		2062
		2063	$cf::MAP{$path} || do {
		2064	my $map = new_from_path cf::map $path
		2065	or return;
		2066
		2067	$map->{last_save} = $cf::RUNTIME;
		2068
		2069	$map->load_header
		2070	or return;
		2071
		2072	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2073	# doing this can freeze the server in a sync job, obviously
		2074	#$cf::WAIT_FOR_TICK->wait;
		2075	undef $guard2;
		2076	undef $guard1;
		2077	$map->reset;
		2078	return find $path;
		2079	}
		2080
		2081	$cf::MAP{$path} = $map
		2082	}
		2083	}
		2084
		2085	sub pre_load { }
		2086	#sub post_load { } # XS
		2087
		2088	sub load {
		2089	my ($self) = @_;
		2090
		2091	local $self->{deny_reset} = 1; # loading can take a long time
		2092
		2093	my $path = $self->{path};
		2094
		2095	{
		2096	my $guard = cf::lock_acquire "map_data:$path";
		2097
		2098	return unless $self->valid;
		2099	return unless $self->in_memory == cf::MAP_SWAPPED;
		2100
		2101	$self->in_memory (cf::MAP_LOADING);
		2102
		2103	$self->alloc;
		2104
		2105	$self->pre_load;
		2106	cf::cede_to_tick;
		2107
		2108	my $f = new_from_file cf::object::thawer $self->{load_path};
		2109	$f->skip_block;
		2110	$self->_load_objects ($f)
		2111	or return;
		2112
		2113	$self->post_load_original
		2114	if delete $self->{load_original};
		2115
		2116	if (my $uniq = $self->uniq_path) {
		2117	utf8::encode $uniq;
		2118	unless (aio_stat $uniq) {
		2119	if (my $f = new_from_file cf::object::thawer $uniq) {
		2120	$self->clear_unique_items;
		2121	$self->_load_objects ($f);
		2122	$f->resolve_delayed_derefs;
		2123	}
767	}	2124	}
768	}	2125	}
		2126
		2127	$f->resolve_delayed_derefs;
		2128
		2129	cf::cede_to_tick;
		2130	# now do the right thing for maps
		2131	$self->link_multipart_objects;
		2132	$self->difficulty ($self->estimate_difficulty)
		2133	unless $self->difficulty;
		2134	cf::cede_to_tick;
		2135
		2136	unless ($self->{deny_activate}) {
		2137	$self->decay_objects;
		2138	$self->fix_auto_apply;
		2139	$self->update_buttons;
		2140	cf::cede_to_tick;
		2141	$self->activate;
		2142	}
		2143
		2144	$self->{last_save} = $cf::RUNTIME;
		2145	$self->last_access ($cf::RUNTIME);
		2146
		2147	$self->in_memory (cf::MAP_ACTIVE);
769	},	2148	}
770	;
771		2149
772	#############################################################################	2150	$self->post_load;
		2151	}
773		2152
774	=head2 CORE EXTENSIONS	2153	# customize the map for a given player, i.e.
		2154	# return the _real_ map. used by e.g. per-player
		2155	# maps to change the path to ~playername/mappath
		2156	sub customise_for {
		2157	my ($self, $ob) = @_;
775		2158
776	Functions and methods that extend core crossfire objects.	2159	return find "~" . $ob->name . "/" . $self->{path}
		2160	if $self->per_player;
		2161
		2162	# return find "?party/" . $ob->name . "/" . $self->{path}
		2163	# if $self->per_party;
		2164
		2165	$self
		2166	}
		2167
		2168	# find and load all maps in the 3x3 area around a map
		2169	sub load_neighbours {
		2170	my ($map) = @_;
		2171
		2172	my @neigh; # diagonal neighbours
		2173
		2174	for (0 .. 3) {
		2175	my $neigh = $map->tile_path ($_)
		2176	or next;
		2177	$neigh = find $neigh, $map
		2178	or next;
		2179	$neigh->load;
		2180
		2181	# now find the diagonal neighbours
		2182	push @neigh,
		2183	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2184	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2185	}
		2186
		2187	for (grep defined $_->[0], @neigh) {
		2188	my ($path, $origin) = @$_;
		2189	my $neigh = find $path, $origin
		2190	or next;
		2191	$neigh->load;
		2192	}
		2193	}
		2194
		2195	sub find_sync {
		2196	my ($path, $origin) = @_;
		2197
		2198	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2199	if $Coro::current == $Coro::main;
		2200
		2201	find $path, $origin
		2202	}
		2203
		2204	sub do_load_sync {
		2205	my ($map) = @_;
		2206
		2207	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2208	if $Coro::current == $Coro::main;
		2209
		2210	$map->load;
		2211	}
		2212
		2213	our %MAP_PREFETCH;
		2214	our $MAP_PREFETCHER = undef;
		2215
		2216	sub find_async {
		2217	my ($path, $origin, $load) = @_;
		2218
		2219	$path = normalise $path, $origin && $origin->{path};
		2220
		2221	if (my $map = $cf::MAP{$path}) {
		2222	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2223	}
		2224
		2225	$MAP_PREFETCH{$path} |= $load;
		2226
		2227	$MAP_PREFETCHER ||= cf::async {
		2228	$Coro::current->{desc} = "map prefetcher";
		2229
		2230	while (%MAP_PREFETCH) {
		2231	while (my ($k, $v) = each %MAP_PREFETCH) {
		2232	if (my $map = find $k) {
		2233	$map->load if $v;
		2234	}
		2235
		2236	delete $MAP_PREFETCH{$k};
		2237	}
		2238	}
		2239	undef $MAP_PREFETCHER;
		2240	};
		2241	$MAP_PREFETCHER->prio (6);
		2242
		2243	()
		2244	}
		2245
		2246	# common code, used by both ->save and ->swapout
		2247	sub _save {
		2248	my ($self) = @_;
		2249
		2250	$self->{last_save} = $cf::RUNTIME;
		2251
		2252	return unless $self->dirty;
		2253
		2254	my $save = $self->save_path; utf8::encode $save;
		2255	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2256
		2257	$self->{load_path} = $save;
		2258
		2259	return if $self->{deny_save};
		2260
		2261	local $self->{last_access} = $self->last_access;#d#
		2262
		2263	cf::async {
		2264	$Coro::current->{desc} = "map player save";
		2265	$_->contr->save for $self->players;
		2266	};
		2267
		2268	cf::get_slot 0.02;
		2269
		2270	if ($uniq) {
		2271	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2272	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2273	} else {
		2274	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2275	}
		2276	}
		2277
		2278	sub save {
		2279	my ($self) = @_;
		2280
		2281	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2282
		2283	$self->_save;
		2284	}
		2285
		2286	sub swap_out {
		2287	my ($self) = @_;
		2288
		2289	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2290
		2291	return if $self->in_memory != cf::MAP_ACTIVE;
		2292	return if $self->{deny_save};
		2293	return if $self->players;
		2294
		2295	# first deactivate the map and "unlink" it from the core
		2296	$self->deactivate;
		2297	$_->clear_links_to ($self) for values %cf::MAP;
		2298	$self->in_memory (cf::MAP_SWAPPED);
		2299
		2300	# then atomically save
		2301	$self->_save;
		2302
		2303	# then free the map
		2304	$self->clear;
		2305	}
		2306
		2307	sub reset_at {
		2308	my ($self) = @_;
		2309
		2310	# TODO: safety, remove and allow resettable per-player maps
		2311	return 1e99 if $self->{deny_reset};
		2312
		2313	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2314	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2315
		2316	$time + $to
		2317	}
		2318
		2319	sub should_reset {
		2320	my ($self) = @_;
		2321
		2322	$self->reset_at <= $cf::RUNTIME
		2323	}
		2324
		2325	sub reset {
		2326	my ($self) = @_;
		2327
		2328	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2329
		2330	return if $self->players;
		2331
		2332	cf::trace "resetting map ", $self->path, "\n";
		2333
		2334	$self->in_memory (cf::MAP_SWAPPED);
		2335
		2336	# need to save uniques path
		2337	unless ($self->{deny_save}) {
		2338	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2339
		2340	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2341	if $uniq;
		2342	}
		2343
		2344	delete $cf::MAP{$self->path};
		2345
		2346	$self->deactivate;
		2347	$_->clear_links_to ($self) for values %cf::MAP;
		2348	$self->clear;
		2349
		2350	$self->unlink_save;
		2351	$self->destroy;
		2352	}
		2353
		2354	my $nuke_counter = "aaaa";
		2355
		2356	sub nuke {
		2357	my ($self) = @_;
		2358
		2359	{
		2360	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2361
		2362	delete $cf::MAP{$self->path};
		2363
		2364	$self->unlink_save;
		2365
		2366	bless $self, "cf::map::wrap";
		2367	delete $self->{deny_reset};
		2368	$self->{deny_save} = 1;
		2369	$self->reset_timeout (1);
		2370	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2371
		2372	$cf::MAP{$self->path} = $self;
		2373	}
		2374
		2375	$self->reset; # polite request, might not happen
		2376	}
		2377
		2378	=item $maps = cf::map::tmp_maps
		2379
		2380	Returns an arrayref with all map paths of currently instantiated and saved
		2381	maps. May block.
		2382
		2383	=cut
		2384
		2385	sub tmp_maps() {
		2386	[
		2387	map {
		2388	utf8::decode $_;
		2389	/\.map$/
		2390	? normalise $_
		2391	: ()
		2392	} @{ aio_readdir $TMPDIR or [] }
		2393	]
		2394	}
		2395
		2396	=item $maps = cf::map::random_maps
		2397
		2398	Returns an arrayref with all map paths of currently instantiated and saved
		2399	random maps. May block.
		2400
		2401	=cut
		2402
		2403	sub random_maps() {
		2404	[
		2405	map {
		2406	utf8::decode $_;
		2407	/\.map$/
		2408	? normalise "?random/$_"
		2409	: ()
		2410	} @{ aio_readdir $RANDOMDIR or [] }
		2411	]
		2412	}
		2413
		2414	=item cf::map::unique_maps
		2415
		2416	Returns an arrayref of paths of all shared maps that have
		2417	instantiated unique items. May block.
		2418
		2419	=cut
		2420
		2421	sub unique_maps() {
		2422	[
		2423	map {
		2424	utf8::decode $_;
		2425	s/\.map$//; # TODO future compatibility hack
		2426	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2427	? ()
		2428	: normalise $_
		2429	} @{ aio_readdir $UNIQUEDIR or [] }
		2430	]
		2431	}
		2432
		2433	=item cf::map::static_maps
		2434
		2435	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2436	file in the shared directory excluding F</styles> and F</editor>). May
		2437	block.
		2438
		2439	=cut
		2440
		2441	sub static_maps() {
		2442	my @dirs = "";
		2443	my @maps;
		2444
		2445	while (@dirs) {
		2446	my $dir = shift @dirs;
		2447
		2448	next if $dir eq "/styles" || $dir eq "/editor";
		2449
		2450	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2451	or return;
		2452
		2453	for (@$files) {
		2454	s/\.map$// or next;
		2455	utf8::decode $_;
		2456	push @maps, "$dir/$_";
		2457	}
		2458
		2459	push @dirs, map "$dir/$_", @$dirs;
		2460	}
		2461
		2462	\@maps
		2463	}
		2464
		2465	=back
		2466
		2467	=head3 cf::object
		2468
		2469	=cut
		2470
		2471	package cf::object;
777		2472
778	=over 4	2473	=over 4
779		2474
780	=item cf::player::exists $login	2475	=item $ob->inv_recursive
781		2476
782	Returns true when the given account exists.	2477	Returns the inventory of the object I<and> their inventories, recursively,
		2478	but I<not> the object itself.
783		2479
784	=cut	2480	=cut
785		2481
786	sub cf::player::exists($) {	2482	sub inv_recursive_;
787	cf::player::find $_[0]	2483	sub inv_recursive_ {
788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2484	map { $_, inv_recursive_ $_->inv } @_
789	}	2485	}
		2486
		2487	sub inv_recursive {
		2488	inv_recursive_ inv $_[0]
		2489	}
		2490
		2491	=item $ref = $ob->ref
		2492
		2493	Creates and returns a persistent reference to an object that can be stored as a string.
		2494
		2495	=item $ob = cf::object::deref ($refstring)
		2496
		2497	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2498	even if the object actually exists. May block.
		2499
		2500	=cut
		2501
		2502	sub deref {
		2503	my ($ref) = @_;
		2504
		2505	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2506	my ($uuid, $name) = ($1, $2);
		2507	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2508	or return;
		2509	$pl->ob->uuid eq $uuid
		2510	or return;
		2511
		2512	$pl->ob
		2513	} else {
		2514	warn "$ref: cannot resolve object reference\n";
		2515	undef
		2516	}
		2517	}
		2518
		2519	package cf;
		2520
		2521	=back
		2522
		2523	=head3 cf::object::player
		2524
		2525	=over 4
790		2526
791	=item $player_object->reply ($npc, $msg[, $flags])	2527	=item $player_object->reply ($npc, $msg[, $flags])
792		2528
793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2529	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
794	can be C<undef>. Does the right thing when the player is currently in a	2530	can be C<undef>. Does the right thing when the player is currently in a
795	dialogue with the given NPC character.	2531	dialogue with the given NPC character.
796		2532
797	=cut	2533	=cut
798		2534
		2535	our $SAY_CHANNEL = {
		2536	id => "say",
		2537	title => "Map",
		2538	reply => "say ",
		2539	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2540	};
		2541
		2542	our $CHAT_CHANNEL = {
		2543	id => "chat",
		2544	title => "Chat",
		2545	reply => "chat ",
		2546	tooltip => "Player chat and shouts, global to the server.",
		2547	};
		2548
799	# rough implementation of a future "reply" method that works	2549	# rough implementation of a future "reply" method that works
800	# with dialog boxes.	2550	# with dialog boxes.
		2551	#TODO: the first argument must go, split into a $npc->reply_to ( method
801	sub cf::object::player::reply($$$;$) {	2552	sub cf::object::player::reply($$$;$) {
802	my ($self, $npc, $msg, $flags) = @_;	2553	my ($self, $npc, $msg, $flags) = @_;
803		2554
804	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2555	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
805		2556
806	if ($self->{record_replies}) {	2557	if ($self->{record_replies}) {
807	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2558	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2559
808	} else {	2560	} else {
		2561	my $pl = $self->contr;
		2562
		2563	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2564	my $dialog = $pl->{npc_dialog};
		2565	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2566
		2567	} else {
809	$msg = $npc->name . " says: $msg" if $npc;	2568	$msg = $npc->name . " says: $msg" if $npc;
810	$self->message ($msg, $flags);	2569	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2570	}
811	}	2571	}
812	}	2572	}
813		2573
814	=item $player->ext_reply ($msgid, $msgtype, %msg)	2574	=item $object->send_msg ($channel, $msg, $color, [extra...])
815		2575
816	Sends an ext reply to the player.
817
818	=cut	2576	=cut
819		2577
820	sub cf::player::ext_reply($$$%) {	2578	sub cf::object::send_msg {
821	my ($self, $id, %msg) = @_;	2579	my $pl = shift->contr
822		2580	or return;
823	$msg{msgid} = $id;	2581	$pl->send_msg (@_);
824
825	$self->send ("ext " . to_json \%msg);
826	}	2582	}
827		2583
828	=item $player_object->may ("access")	2584	=item $player_object->may ("access")
829		2585
830	Returns wether the given player is authorized to access resource "access"	2586	Returns wether the given player is authorized to access resource "access"
…		…
839	(ref $cf::CFG{"may_$access"}	2595	(ref $cf::CFG{"may_$access"}
840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2596	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
841	: $cf::CFG{"may_$access"})	2597	: $cf::CFG{"may_$access"})
842	}	2598	}
843		2599
844	=cut	2600	=item $player_object->enter_link
845		2601
846	#############################################################################	2602	Freezes the player and moves him/her to a special map (C<{link}>).
		2603
		2604	The player should be reasonably safe there for short amounts of time (e.g.
		2605	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2606	though, as the player cannot control the character while it is on the link
		2607	map.
		2608
		2609	Will never block.
		2610
		2611	=item $player_object->leave_link ($map, $x, $y)
		2612
		2613	Moves the player out of the special C<{link}> map onto the specified
		2614	map. If the map is not valid (or omitted), the player will be moved back
		2615	to the location he/she was before the call to C<enter_link>, or, if that
		2616	fails, to the emergency map position.
		2617
		2618	Might block.
		2619
		2620	=cut
		2621
		2622	sub link_map {
		2623	unless ($LINK_MAP) {
		2624	$LINK_MAP = cf::map::find "{link}"
		2625	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2626	$LINK_MAP->load;
		2627	}
		2628
		2629	$LINK_MAP
		2630	}
		2631
		2632	sub cf::object::player::enter_link {
		2633	my ($self) = @_;
		2634
		2635	$self->deactivate_recursive;
		2636
		2637	++$self->{_link_recursion};
		2638
		2639	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2640
		2641	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2642	if $self->map && $self->map->{path} ne "{link}";
		2643
		2644	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2645	}
		2646
		2647	sub cf::object::player::leave_link {
		2648	my ($self, $map, $x, $y) = @_;
		2649
		2650	return unless $self->contr->active;
		2651
		2652	my $link_pos = delete $self->{_link_pos};
		2653
		2654	unless ($map) {
		2655	# restore original map position
		2656	($map, $x, $y) = @{ $link_pos || [] };
		2657	$map = cf::map::find $map;
		2658
		2659	unless ($map) {
		2660	($map, $x, $y) = @$EMERGENCY_POSITION;
		2661	$map = cf::map::find $map
		2662	or die "FATAL: cannot load emergency map\n";
		2663	}
		2664	}
		2665
		2666	($x, $y) = (-1, -1)
		2667	unless (defined $x) && (defined $y);
		2668
		2669	# use -1 or undef as default coordinates, not 0, 0
		2670	($x, $y) = ($map->enter_x, $map->enter_y)
		2671	if $x <= 0 && $y <= 0;
		2672
		2673	$map->load;
		2674	$map->load_neighbours;
		2675
		2676	return unless $self->contr->active;
		2677
		2678	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2679	if ($self->enter_map ($map, $x, $y)) {
		2680	# entering was successful
		2681	delete $self->{_link_recursion};
		2682	# only activate afterwards, to support waiting in hooks
		2683	$self->activate_recursive;
		2684	}
		2685
		2686	}
		2687
		2688	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2689
		2690	Moves the player to the given map-path and coordinates by first freezing
		2691	her, loading and preparing them map, calling the provided $check callback
		2692	that has to return the map if sucecssful, and then unfreezes the player on
		2693	the new (success) or old (failed) map position. In either case, $done will
		2694	be called at the end of this process.
		2695
		2696	Note that $check will be called with a potentially non-loaded map, so if
		2697	it needs a loaded map it has to call C<< ->load >>.
		2698
		2699	=cut
		2700
		2701	our $GOTOGEN;
		2702
		2703	sub cf::object::player::goto {
		2704	my ($self, $path, $x, $y, $check, $done) = @_;
		2705
		2706	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2707	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2708	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2709	($path, $x, $y) = @$EMERGENCY_POSITION;
		2710	}
		2711
		2712	# do generation counting so two concurrent goto's will be executed in-order
		2713	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2714
		2715	$self->enter_link;
		2716
		2717	(async {
		2718	$Coro::current->{desc} = "player::goto $path $x $y";
		2719
		2720	# *tag paths override both path and x|y
		2721	if ($path =~ /^\*(.*)$/) {
		2722	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2723	my $ob = $obs[rand @obs];
		2724
		2725	# see if we actually can go there
		2726	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2727	$ob = $obs[rand @obs];
		2728	} else {
		2729	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2730	}
		2731	# else put us there anyways for now #d#
		2732
		2733	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2734	} else {
		2735	($path, $x, $y) = (undef, undef, undef);
		2736	}
		2737	}
		2738
		2739	my $map = eval {
		2740	my $map = defined $path ? cf::map::find $path : undef;
		2741
		2742	if ($map) {
		2743	$map = $map->customise_for ($self);
		2744	$map = $check->($map, $x, $y, $self) if $check && $map;
		2745	} else {
		2746	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2747	}
		2748
		2749	$map
		2750	};
		2751
		2752	if ($@) {
		2753	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2754	LOG llevError | logBacktrace, Carp::longmess $@;
		2755	}
		2756
		2757	if ($gen == $self->{_goto_generation}) {
		2758	delete $self->{_goto_generation};
		2759	$self->leave_link ($map, $x, $y);
		2760	}
		2761
		2762	$done->($self) if $done;
		2763	})->prio (1);
		2764	}
		2765
		2766	=item $player_object->enter_exit ($exit_object)
		2767
		2768	=cut
		2769
		2770	sub parse_random_map_params {
		2771	my ($spec) = @_;
		2772
		2773	my $rmp = { # defaults
		2774	xsize => (cf::rndm 15, 40),
		2775	ysize => (cf::rndm 15, 40),
		2776	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2777	#layout => string,
		2778	};
		2779
		2780	for (split /\n/, $spec) {
		2781	my ($k, $v) = split /\s+/, $_, 2;
		2782
		2783	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2784	}
		2785
		2786	$rmp
		2787	}
		2788
		2789	sub prepare_random_map {
		2790	my ($exit) = @_;
		2791
		2792	# all this does is basically replace the /! path by
		2793	# a new random map path (?random/...) with a seed
		2794	# that depends on the exit object
		2795
		2796	my $rmp = parse_random_map_params $exit->msg;
		2797
		2798	if ($exit->map) {
		2799	$rmp->{region} = $exit->region->name;
		2800	$rmp->{origin_map} = $exit->map->path;
		2801	$rmp->{origin_x} = $exit->x;
		2802	$rmp->{origin_y} = $exit->y;
		2803
		2804	$exit->map->touch;
		2805	}
		2806
		2807	$rmp->{random_seed} ||= $exit->random_seed;
		2808
		2809	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2810	my $md5 = Digest::MD5::md5_hex $data;
		2811	my $meta = "$RANDOMDIR/$md5.meta";
		2812
		2813	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2814	aio_write $fh, 0, (length $data), $data, 0;
		2815	undef $fh;
		2816	aio_rename "$meta~", $meta;
		2817
		2818	my $slaying = "?random/$md5";
		2819
		2820	if ($exit->valid) {
		2821	$exit->slaying ("?random/$md5");
		2822	$exit->msg (undef);
		2823	}
		2824	}
		2825	}
		2826
		2827	sub cf::object::player::enter_exit {
		2828	my ($self, $exit) = @_;
		2829
		2830	return unless $self->type == cf::PLAYER;
		2831
		2832	$self->enter_link;
		2833
		2834	(async {
		2835	$Coro::current->{desc} = "enter_exit";
		2836
		2837	unless (eval {
		2838	$self->deactivate_recursive; # just to be sure
		2839
		2840	# random map handling
		2841	{
		2842	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2843
		2844	prepare_random_map $exit
		2845	if $exit->slaying eq "/!";
		2846	}
		2847
		2848	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2849	my $x = $exit->stats->hp;
		2850	my $y = $exit->stats->sp;
		2851
		2852	$self->goto ($map, $x, $y);
		2853
		2854	# if exit is damned, update players death & WoR home-position
		2855	$self->contr->savebed ($map, $x, $y)
		2856	if $exit->flag (cf::FLAG_DAMNED);
		2857
		2858	1
		2859	}) {
		2860	$self->message ("Something went wrong deep within the deliantra server. "
		2861	. "I'll try to bring you back to the map you were before. "
		2862	. "Please report this to the dungeon master!",
		2863	cf::NDI_UNIQUE | cf::NDI_RED);
		2864
		2865	error "ERROR in enter_exit: $@";
		2866	$self->leave_link;
		2867	}
		2868	})->prio (1);
		2869	}
		2870
		2871	=head3 cf::client
		2872
		2873	=over 4
		2874
		2875	=item $client->send_drawinfo ($text, $flags)
		2876
		2877	Sends a drawinfo packet to the client. Circumvents output buffering so
		2878	should not be used under normal circumstances.
		2879
		2880	=cut
		2881
		2882	sub cf::client::send_drawinfo {
		2883	my ($self, $text, $flags) = @_;
		2884
		2885	utf8::encode $text;
		2886	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2887	}
		2888
		2889	=item $client->send_big_packet ($pkt)
		2890
		2891	Like C<send_packet>, but tries to compress large packets, and fragments
		2892	them as required.
		2893
		2894	=cut
		2895
		2896	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2897
		2898	sub cf::client::send_big_packet {
		2899	my ($self, $pkt) = @_;
		2900
		2901	# try lzf for large packets
		2902	$pkt = "lzf " . Compress::LZF::compress $pkt
		2903	if 1024 <= length $pkt and $self->{can_lzf};
		2904
		2905	# split very large packets
		2906	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2907	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2908	$pkt = "frag";
		2909	}
		2910
		2911	$self->send_packet ($pkt);
		2912	}
		2913
		2914	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2915
		2916	Send a drawinfo or msg packet to the client, formatting the msg for the
		2917	client if neccessary. C<$type> should be a string identifying the type of
		2918	the message, with C<log> being the default. If C<$color> is negative, suppress
		2919	the message unless the client supports the msg packet.
		2920
		2921	=cut
		2922
		2923	# non-persistent channels (usually the info channel)
		2924	our %CHANNEL = (
		2925	"c/motd" => {
		2926	id => "infobox",
		2927	title => "MOTD",
		2928	reply => undef,
		2929	tooltip => "The message of the day",
		2930	},
		2931	"c/identify" => {
		2932	id => "infobox",
		2933	title => "Identify",
		2934	reply => undef,
		2935	tooltip => "Items recently identified",
		2936	},
		2937	"c/examine" => {
		2938	id => "infobox",
		2939	title => "Examine",
		2940	reply => undef,
		2941	tooltip => "Signs and other items you examined",
		2942	},
		2943	"c/shopinfo" => {
		2944	id => "infobox",
		2945	title => "Shop Info",
		2946	reply => undef,
		2947	tooltip => "What your bargaining skill tells you about the shop",
		2948	},
		2949	"c/book" => {
		2950	id => "infobox",
		2951	title => "Book",
		2952	reply => undef,
		2953	tooltip => "The contents of a note or book",
		2954	},
		2955	"c/lookat" => {
		2956	id => "infobox",
		2957	title => "Look",
		2958	reply => undef,
		2959	tooltip => "What you saw there",
		2960	},
		2961	"c/who" => {
		2962	id => "infobox",
		2963	title => "Players",
		2964	reply => undef,
		2965	tooltip => "Shows players who are currently online",
		2966	},
		2967	"c/body" => {
		2968	id => "infobox",
		2969	title => "Body Parts",
		2970	reply => undef,
		2971	tooltip => "Shows which body parts you posess and are available",
		2972	},
		2973	"c/statistics" => {
		2974	id => "infobox",
		2975	title => "Statistics",
		2976	reply => undef,
		2977	tooltip => "Shows your primary statistics",
		2978	},
		2979	"c/skills" => {
		2980	id => "infobox",
		2981	title => "Skills",
		2982	reply => undef,
		2983	tooltip => "Shows your experience per skill and item power",
		2984	},
		2985	"c/shopitems" => {
		2986	id => "infobox",
		2987	title => "Shop Items",
		2988	reply => undef,
		2989	tooltip => "Shows the items currently for sale in this shop",
		2990	},
		2991	"c/resistances" => {
		2992	id => "infobox",
		2993	title => "Resistances",
		2994	reply => undef,
		2995	tooltip => "Shows your resistances",
		2996	},
		2997	"c/pets" => {
		2998	id => "infobox",
		2999	title => "Pets",
		3000	reply => undef,
		3001	tooltip => "Shows information abotu your pets/a specific pet",
		3002	},
		3003	"c/perceiveself" => {
		3004	id => "infobox",
		3005	title => "Perceive Self",
		3006	reply => undef,
		3007	tooltip => "You gained detailed knowledge about yourself",
		3008	},
		3009	"c/uptime" => {
		3010	id => "infobox",
		3011	title => "Uptime",
		3012	reply => undef,
		3013	tooltip => "How long the server has been running since last restart",
		3014	},
		3015	"c/mapinfo" => {
		3016	id => "infobox",
		3017	title => "Map Info",
		3018	reply => undef,
		3019	tooltip => "Information related to the maps",
		3020	},
		3021	"c/party" => {
		3022	id => "party",
		3023	title => "Party",
		3024	reply => "gsay ",
		3025	tooltip => "Messages and chat related to your party",
		3026	},
		3027	"c/death" => {
		3028	id => "death",
		3029	title => "Death",
		3030	reply => undef,
		3031	tooltip => "Reason for and more info about your most recent death",
		3032	},
		3033	"c/say" => $SAY_CHANNEL,
		3034	"c/chat" => $CHAT_CHANNEL,
		3035	);
		3036
		3037	sub cf::client::send_msg {
		3038	my ($self, $channel, $msg, $color, @extra) = @_;
		3039
		3040	$msg = $self->pl->expand_cfpod ($msg)
		3041	unless $color & cf::NDI_VERBATIM;
		3042
		3043	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3044
		3045	# check predefined channels, for the benefit of C
		3046	if ($CHANNEL{$channel}) {
		3047	$channel = $CHANNEL{$channel};
		3048
		3049	$self->ext_msg (channel_info => $channel);
		3050	$channel = $channel->{id};
		3051
		3052	} elsif (ref $channel) {
		3053	# send meta info to client, if not yet sent
		3054	unless (exists $self->{channel}{$channel->{id}}) {
		3055	$self->{channel}{$channel->{id}} = $channel;
		3056	$self->ext_msg (channel_info => $channel);
		3057	}
		3058
		3059	$channel = $channel->{id};
		3060	}
		3061
		3062	return unless @extra || length $msg;
		3063
		3064	# default colour, mask it out
		3065	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3066	if $color & cf::NDI_DEF;
		3067
		3068	my $pkt = "msg "
		3069	. $self->{json_coder}->encode (
		3070	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3071	);
		3072
		3073	$self->send_big_packet ($pkt);
		3074	}
		3075
		3076	=item $client->ext_msg ($type, @msg)
		3077
		3078	Sends an ext event to the client.
		3079
		3080	=cut
		3081
		3082	sub cf::client::ext_msg($$@) {
		3083	my ($self, $type, @msg) = @_;
		3084
		3085	if ($self->extcmd == 2) {
		3086	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3087	} elsif ($self->extcmd == 1) { # TODO: remove
		3088	push @msg, msgtype => "event_$type";
		3089	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3090	}
		3091	}
		3092
		3093	=item $client->ext_reply ($msgid, @msg)
		3094
		3095	Sends an ext reply to the client.
		3096
		3097	=cut
		3098
		3099	sub cf::client::ext_reply($$@) {
		3100	my ($self, $id, @msg) = @_;
		3101
		3102	if ($self->extcmd == 2) {
		3103	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3104	} elsif ($self->extcmd == 1) {
		3105	#TODO: version 1, remove
		3106	unshift @msg, msgtype => "reply", msgid => $id;
		3107	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3108	}
		3109	}
		3110
		3111	=item $success = $client->query ($flags, "text", \&cb)
		3112
		3113	Queues a query to the client, calling the given callback with
		3114	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3115	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3116
		3117	Queries can fail, so check the return code. Or don't, as queries will
		3118	become reliable at some point in the future.
		3119
		3120	=cut
		3121
		3122	sub cf::client::query {
		3123	my ($self, $flags, $text, $cb) = @_;
		3124
		3125	return unless $self->state == ST_PLAYING
		3126	|| $self->state == ST_SETUP
		3127	|| $self->state == ST_CUSTOM;
		3128
		3129	$self->state (ST_CUSTOM);
		3130
		3131	utf8::encode $text;
		3132	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3133
		3134	$self->send_packet ($self->{query_queue}[0][0])
		3135	if @{ $self->{query_queue} } == 1;
		3136
		3137	1
		3138	}
		3139
		3140	cf::client->attach (
		3141	on_connect => sub {
		3142	my ($ns) = @_;
		3143
		3144	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3145	},
		3146	on_reply => sub {
		3147	my ($ns, $msg) = @_;
		3148
		3149	# this weird shuffling is so that direct followup queries
		3150	# get handled first
		3151	my $queue = delete $ns->{query_queue}
		3152	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3153
		3154	(shift @$queue)->[1]->($msg);
		3155	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3156
		3157	push @{ $ns->{query_queue} }, @$queue;
		3158
		3159	if (@{ $ns->{query_queue} } == @$queue) {
		3160	if (@$queue) {
		3161	$ns->send_packet ($ns->{query_queue}[0][0]);
		3162	} else {
		3163	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3164	}
		3165	}
		3166	},
		3167	on_exticmd => sub {
		3168	my ($ns, $buf) = @_;
		3169
		3170	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3171
		3172	if (ref $msg) {
		3173	my ($type, $reply, @payload) =
		3174	"ARRAY" eq ref $msg
		3175	? @$msg
		3176	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3177
		3178	my @reply;
		3179
		3180	if (my $cb = $EXTICMD{$type}) {
		3181	@reply = $cb->($ns, @payload);
		3182	}
		3183
		3184	$ns->ext_reply ($reply, @reply)
		3185	if $reply;
		3186
		3187	} else {
		3188	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3189	}
		3190
		3191	cf::override;
		3192	},
		3193	);
		3194
		3195	=item $client->async (\&cb)
		3196
		3197	Create a new coroutine, running the specified callback. The coroutine will
		3198	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3199	or loss of connection).
		3200
		3201	=cut
		3202
		3203	sub cf::client::async {
		3204	my ($self, $cb) = @_;
		3205
		3206	my $coro = &Coro::async ($cb);
		3207
		3208	$coro->on_destroy (sub {
		3209	delete $self->{_coro}{$coro+0};
		3210	});
		3211
		3212	$self->{_coro}{$coro+0} = $coro;
		3213
		3214	$coro
		3215	}
		3216
		3217	cf::client->attach (
		3218	on_client_destroy => sub {
		3219	my ($ns) = @_;
		3220
		3221	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3222	},
		3223	);
		3224
		3225	=back
		3226
847		3227
848	=head2 SAFE SCRIPTING	3228	=head2 SAFE SCRIPTING
849		3229
850	Functions that provide a safe environment to compile and execute	3230	Functions that provide a safe environment to compile and execute
851	snippets of perl code without them endangering the safety of the server	3231	snippets of perl code without them endangering the safety of the server
…		…
858	our $safe = new Safe "safe";	3238	our $safe = new Safe "safe";
859	our $safe_hole = new Safe::Hole;	3239	our $safe_hole = new Safe::Hole;
860		3240
861	$SIG{FPE} = 'IGNORE';	3241	$SIG{FPE} = 'IGNORE';
862		3242
863	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3243	$safe->permit_only (Opcode::opset qw(
		3244	:base_core :base_mem :base_orig :base_math :base_loop
		3245	grepstart grepwhile mapstart mapwhile
		3246	sort time
		3247	));
864		3248
865	# here we export the classes and methods available to script code	3249	# here we export the classes and methods available to script code
866		3250
867	=pod	3251	=pod
868		3252
869	The following fucntions and emthods are available within a safe environment:	3253	The following functions and methods are available within a safe environment:
870		3254
871	cf::object contr pay_amount pay_player	3255	cf::object
		3256	contr pay_amount pay_player map x y force_find force_add destroy
		3257	insert remove name archname title slaying race decrease split
		3258	value
		3259
872	cf::object::player player	3260	cf::object::player
873	cf::player peaceful	3261	player
		3262
		3263	cf::player
		3264	peaceful
		3265
		3266	cf::map
		3267	trigger
874		3268
875	=cut	3269	=cut
876		3270
877	for (	3271	for (
878	["cf::object" => qw(contr pay_amount pay_player)],	3272	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3273	insert remove inv nrof name archname title slaying race
		3274	decrease split destroy change_exp value msg lore send_msg)],
879	["cf::object::player" => qw(player)],	3275	["cf::object::player" => qw(player)],
880	["cf::player" => qw(peaceful)],	3276	["cf::player" => qw(peaceful send_msg)],
		3277	["cf::map" => qw(trigger)],
881	) {	3278	) {
882	no strict 'refs';
883	my ($pkg, @funs) = @$_;	3279	my ($pkg, @funs) = @$_;
884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3280	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
885	for @funs;	3281	for @funs;
886	}	3282	}
887		3283
…		…
902		3298
903	my $qcode = $code;	3299	my $qcode = $code;
904	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3300	$qcode =~ s/"/‟/g; # not allowed in #line filenames
905	$qcode =~ s/\n/\\n/g;	3301	$qcode =~ s/\n/\\n/g;
906		3302
		3303	%vars = (_dummy => 0) unless %vars;
		3304
		3305	my @res;
907	local $_;	3306	local $_;
908	local @safe::cf::_safe_eval_args = values %vars;
909		3307
910	my $eval =	3308	my $eval =
911	"do {\n"	3309	"do {\n"
912	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3310	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
913	. "#line 0 \"{$qcode}\"\n"	3311	. "#line 0 \"{$qcode}\"\n"
914	. $code	3312	. $code
915	. "\n}"	3313	. "\n}"
916	;	3314	;
917		3315
		3316	if ($CFG{safe_eval}) {
918	sub_generation_inc;	3317	sub_generation_inc;
		3318	local @safe::cf::_safe_eval_args = values %vars;
919	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3319	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
920	sub_generation_inc;	3320	sub_generation_inc;
		3321	} else {
		3322	local @cf::_safe_eval_args = values %vars;
		3323	@res = wantarray ? eval eval : scalar eval $eval;
		3324	}
921		3325
922	if ($@) {	3326	if ($@) {
923	warn "$@";	3327	warn "$@",
924	warn "while executing safe code '$code'\n";	3328	"while executing safe code '$code'\n",
925	warn "with arguments " . (join " ", %vars) . "\n";	3329	"with arguments " . (join " ", %vars) . "\n";
926	}	3330	}
927		3331
928	wantarray ? @res : $res[0]	3332	wantarray ? @res : $res[0]
929	}	3333	}
930		3334
…		…
944	=cut	3348	=cut
945		3349
946	sub register_script_function {	3350	sub register_script_function {
947	my ($fun, $cb) = @_;	3351	my ($fun, $cb) = @_;
948		3352
949	no strict 'refs';	3353	$fun = "safe::$fun" if $CFG{safe_eval};
950	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3354	*$fun = $safe_hole->wrap ($cb);
951	}	3355	}
952		3356
953	=back	3357	=back
954		3358
955	=cut	3359	=cut
956		3360
957	#############################################################################	3361	#############################################################################
		3362	# the server's init and main functions
958		3363
959	=head2 EXTENSION DATABASE SUPPORT	3364	sub load_facedata($) {
		3365	my ($path) = @_;
960		3366
961	Crossfire maintains a very simple database for extension use. It can	3367	# HACK to clear player env face cache, we need some signal framework
962	currently store anything that can be serialised using Storable, which	3368	# for this (global event?)
963	excludes objects.	3369	%ext::player_env::MUSIC_FACE_CACHE = ();
964		3370
965	The parameter C<$family> should best start with the name of the extension	3371	my $enc = JSON::XS->new->utf8->canonical->relaxed;
966	using it, it should be unique.
967		3372
968	=over 4	3373	trace "loading facedata from $path\n";
969		3374
970	=item $hashref = cf::db_get $family	3375	my $facedata;
		3376	0 < aio_load $path, $facedata
		3377	or die "$path: $!";
971		3378
972	Return a hashref for use by the extension C<$family>, which can be	3379	$facedata = Coro::Storable::thaw $facedata;
973	modified. After modifications, you have to call C<cf::db_dirty> or
974	C<cf::db_sync>.
975		3380
976	=item $value = cf::db_get $family => $key	3381	$facedata->{version} == 2
		3382	or cf::cleanup "$path: version mismatch, cannot proceed.";
977		3383
978	Returns a single value from the database	3384	# patch in the exptable
		3385	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3386	$facedata->{resource}{"res/exp_table"} = {
		3387	type => FT_RSRC,
		3388	data => $exp_table,
		3389	hash => (Digest::MD5::md5 $exp_table),
		3390	};
		3391	cf::cede_to_tick;
979		3392
980	=item cf::db_put $family => $hashref	3393	{
		3394	my $faces = $facedata->{faceinfo};
981		3395
982	Stores the given family hashref into the database. Updates are delayed, if	3396	while (my ($face, $info) = each %$faces) {
983	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3397	my $idx = (cf::face::find $face) || cf::face::alloc $face;
984		3398
985	=item cf::db_put $family => $key => $value	3399	cf::face::set_visibility $idx, $info->{visibility};
		3400	cf::face::set_magicmap $idx, $info->{magicmap};
		3401	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3402	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
986		3403
987	Stores the given C<$value> in the family hash. Updates are delayed, if you	3404	cf::cede_to_tick;
988	want the data to be synced to disk immediately, use C<cf::db_sync>.	3405	}
989		3406
990	=item cf::db_dirty	3407	while (my ($face, $info) = each %$faces) {
		3408	next unless $info->{smooth};
991		3409
992	Marks the database as dirty, to be updated at a later time.	3410	my $idx = cf::face::find $face
		3411	or next;
993		3412
994	=item cf::db_sync	3413	if (my $smooth = cf::face::find $info->{smooth}) {
		3414	cf::face::set_smooth $idx, $smooth;
		3415	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3416	} else {
		3417	error "smooth face '$info->{smooth}' not found for face '$face'";
		3418	}
995		3419
996	Immediately write the database to disk I<if it is dirty>.	3420	cf::cede_to_tick;
		3421	}
		3422	}
997		3423
998	=cut	3424	{
		3425	my $anims = $facedata->{animinfo};
999		3426
1000	our $DB;	3427	while (my ($anim, $info) = each %$anims) {
		3428	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3429	cf::cede_to_tick;
		3430	}
		3431
		3432	cf::anim::invalidate_all; # d'oh
		3433	}
		3434
		3435	{
		3436	my $res = $facedata->{resource};
		3437
		3438	while (my ($name, $info) = each %$res) {
		3439	if (defined $info->{type}) {
		3440	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3441
		3442	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3443	cf::face::set_type $idx, $info->{type};
		3444	} else {
		3445	$RESOURCE{$name} = $info; # unused
		3446	}
		3447
		3448	cf::cede_to_tick;
		3449	}
		3450	}
		3451
		3452	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3453
		3454	1
		3455	}
		3456
		3457	register_exticmd fx_want => sub {
		3458	my ($ns, $want) = @_;
		3459
		3460	while (my ($k, $v) = each %$want) {
		3461	$ns->fx_want ($k, $v);
		3462	}
		3463	};
		3464
		3465	sub load_resource_file($) {
		3466	my $guard = lock_acquire "load_resource_file";
		3467
		3468	my $status = load_resource_file_ $_[0];
		3469	get_slot 0.1, 100;
		3470	cf::arch::commit_load;
		3471
		3472	$status
		3473	}
		3474
		3475	sub reload_regions {
		3476	# HACK to clear player env face cache, we need some signal framework
		3477	# for this (global event?)
		3478	%ext::player_env::MUSIC_FACE_CACHE = ();
		3479
		3480	load_resource_file "$MAPDIR/regions"
		3481	or die "unable to load regions file\n";
		3482
		3483	for (cf::region::list) {
		3484	$_->{match} = qr/$_->{match}/
		3485	if exists $_->{match};
		3486	}
		3487	}
		3488
		3489	sub reload_facedata {
		3490	load_facedata "$DATADIR/facedata"
		3491	or die "unable to load facedata\n";
		3492	}
		3493
		3494	sub reload_archetypes {
		3495	load_resource_file "$DATADIR/archetypes"
		3496	or die "unable to load archetypes\n";
		3497	}
		3498
		3499	sub reload_treasures {
		3500	load_resource_file "$DATADIR/treasures"
		3501	or die "unable to load treasurelists\n";
		3502	}
		3503
		3504	sub reload_exp {
		3505	cf::init_experience;
		3506	}
		3507
		3508	sub reload_sound {
		3509	trace "loading sound config from $DATADIR/sound\n";
		3510
		3511	0 < Coro::AIO::aio_load "$DATADIR/sound", my $data
		3512	or die "$DATADIR/sound $!";
		3513
		3514	my $soundconf = JSON::XS->new->utf8->relaxed->decode ($data);
		3515
		3516	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3517	my $sound = $soundconf->{compat}[$_]
		3518	or next;
		3519
		3520	my $face = cf::face::find "sound/$sound->[1]";
		3521	cf::sound::set $sound->[0] => $face;
		3522	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3523	}
		3524
		3525	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3526	my $face = cf::face::find "sound/$v";
		3527	cf::sound::set $k => $face;
		3528	}
		3529	}
		3530
		3531	sub reload_resources {
		3532	trace "reloading resource files...\n";
		3533
		3534	reload_exp;
		3535	reload_facedata;
		3536	reload_sound;
		3537	reload_archetypes;
		3538	reload_regions;
		3539	reload_treasures;
		3540
		3541	trace "finished reloading resource files\n";
		3542	}
		3543
		3544	sub reload_config {
		3545	trace "reloading config file...\n";
		3546
		3547	open my $fh, "<:utf8", "$CONFDIR/config"
		3548	or return;
		3549
		3550	local $/;
		3551	*CFG = YAML::XS::Load scalar <$fh>;
		3552
		3553	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3554
		3555	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3556	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3557
		3558	if (exists $CFG{mlockall}) {
		3559	eval {
		3560	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3561	and die "WARNING: m(un)lockall failed: $!\n";
		3562	};
		3563	warn $@ if $@;
		3564	}
		3565
		3566	trace "finished reloading resource files\n";
		3567	}
		3568
		3569	sub pidfile() {
		3570	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3571	or die "$PIDFILE: $!";
		3572	flock $fh, &Fcntl::LOCK_EX
		3573	or die "$PIDFILE: flock: $!";
		3574	$fh
		3575	}
		3576
		3577	# make sure only one server instance is running at any one time
		3578	sub atomic {
		3579	my $fh = pidfile;
		3580
		3581	my $pid = <$fh>;
		3582	kill 9, $pid if $pid > 0;
		3583
		3584	seek $fh, 0, 0;
		3585	print $fh $$;
		3586	}
		3587
		3588	sub main_loop {
		3589	trace "EV::loop starting\n";
		3590	if (1) {
		3591	EV::loop;
		3592	}
		3593	trace "EV::loop returned\n";
		3594	goto &main_loop unless $REALLY_UNLOOP;
		3595	}
		3596
		3597	sub main {
		3598	cf::init_globals; # initialise logging
		3599
		3600	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3601	LOG llevInfo, "Copyright (C) 2005-2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3602	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3603	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3604
		3605	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3606
		3607	# we must not ever block the main coroutine
		3608	local $Coro::idle = sub {
		3609	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3610	(async {
		3611	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3612	EV::loop EV::LOOP_ONESHOT;
		3613	})->prio (Coro::PRIO_MAX);
		3614	};
		3615
		3616	evthread_start IO::AIO::poll_fileno;
		3617
		3618	cf::sync_job {
		3619	cf::incloader::init ();
		3620
		3621	cf::init_anim;
		3622	cf::init_attackmess;
		3623	cf::init_dynamic;
		3624
		3625	cf::load_settings;
		3626	cf::load_materials;
		3627
		3628	reload_resources;
		3629	reload_config;
		3630	db_init;
		3631
		3632	cf::init_uuid;
		3633	cf::init_signals;
		3634	cf::init_skills;
		3635
		3636	cf::init_beforeplay;
		3637
		3638	atomic;
		3639
		3640	load_extensions;
		3641
		3642	utime time, time, $RUNTIMEFILE;
		3643
		3644	# no (long-running) fork's whatsoever before this point(!)
		3645	use POSIX ();
		3646	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3647
		3648	(pop @POST_INIT)->(0) while @POST_INIT;
		3649	};
		3650
		3651	cf::object::thawer::errors_are_fatal 0;
		3652	info "parse errors in files are no longer fatal from this point on.\n";
		3653
		3654	my $free_main; $free_main = EV::idle sub {
		3655	undef $free_main;
		3656	undef &main; # free gobs of memory :)
		3657	};
		3658
		3659	goto &main_loop;
		3660	}
		3661
		3662	#############################################################################
		3663	# initialisation and cleanup
		3664
		3665	# install some emergency cleanup handlers
		3666	BEGIN {
		3667	our %SIGWATCHER = ();
		3668	for my $signal (qw(INT HUP TERM)) {
		3669	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3670	cf::cleanup "SIG$signal";
		3671	};
		3672	}
		3673	}
		3674
		3675	sub write_runtime_sync {
		3676	my $t0 = AE::time;
		3677
		3678	# first touch the runtime file to show we are still running:
		3679	# the fsync below can take a very very long time.
		3680
		3681	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3682
		3683	my $guard = cf::lock_acquire "write_runtime";
		3684
		3685	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3686	or return;
		3687
		3688	my $value = $cf::RUNTIME + 90 + 10;
		3689	# 10 is the runtime save interval, for a monotonic clock
		3690	# 60 allows for the watchdog to kill the server.
		3691
		3692	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3693	and return;
		3694
		3695	# always fsync - this file is important
		3696	aio_fsync $fh
		3697	and return;
		3698
		3699	# touch it again to show we are up-to-date
		3700	aio_utime $fh, undef, undef;
		3701
		3702	close $fh
		3703	or return;
		3704
		3705	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3706	and return;
		3707
		3708	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3709
		3710	1
		3711	}
		3712
		3713	our $uuid_lock;
		3714	our $uuid_skip;
		3715
		3716	sub write_uuid_sync($) {
		3717	$uuid_skip ||= $_[0];
		3718
		3719	return if $uuid_lock;
		3720	local $uuid_lock = 1;
		3721
		3722	my $uuid = "$LOCALDIR/uuid";
		3723
		3724	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3725	or return;
		3726
		3727	my $value = uuid_seq uuid_cur;
		3728
		3729	unless ($value) {
		3730	info "cowardly refusing to write zero uuid value!\n";
		3731	return;
		3732	}
		3733
		3734	my $value = uuid_str $value + $uuid_skip;
		3735	$uuid_skip = 0;
		3736
		3737	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3738	and return;
		3739
		3740	# always fsync - this file is important
		3741	aio_fsync $fh
		3742	and return;
		3743
		3744	close $fh
		3745	or return;
		3746
		3747	aio_rename "$uuid~", $uuid
		3748	and return;
		3749
		3750	trace "uuid file written ($value).\n";
		3751
		3752	1
		3753
		3754	}
		3755
		3756	sub write_uuid($$) {
		3757	my ($skip, $sync) = @_;
		3758
		3759	$sync ? write_uuid_sync $skip
		3760	: async { write_uuid_sync $skip };
		3761	}
		3762
		3763	sub emergency_save() {
		3764	my $freeze_guard = cf::freeze_mainloop;
		3765
		3766	info "emergency_perl_save: enter\n";
		3767
		3768	# this is a trade-off: we want to be very quick here, so
		3769	# save all maps without fsync, and later call a global sync
		3770	# (which in turn might be very very slow)
		3771	local $USE_FSYNC = 0;
		3772
		3773	cf::sync_job {
		3774	cf::write_runtime_sync; # external watchdog should not bark
		3775
		3776	# use a peculiar iteration method to avoid tripping on perl
		3777	# refcount bugs in for. also avoids problems with players
		3778	# and maps saved/destroyed asynchronously.
		3779	info "emergency_perl_save: begin player save\n";
		3780	for my $login (keys %cf::PLAYER) {
		3781	my $pl = $cf::PLAYER{$login} or next;
		3782	$pl->valid or next;
		3783	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3784	$pl->save;
		3785	}
		3786	info "emergency_perl_save: end player save\n";
		3787
		3788	cf::write_runtime_sync; # external watchdog should not bark
		3789
		3790	info "emergency_perl_save: begin map save\n";
		3791	for my $path (keys %cf::MAP) {
		3792	my $map = $cf::MAP{$path} or next;
		3793	$map->valid or next;
		3794	$map->save;
		3795	}
		3796	info "emergency_perl_save: end map save\n";
		3797
		3798	cf::write_runtime_sync; # external watchdog should not bark
		3799
		3800	info "emergency_perl_save: begin database checkpoint\n";
		3801	BDB::db_env_txn_checkpoint $DB_ENV;
		3802	info "emergency_perl_save: end database checkpoint\n";
		3803
		3804	info "emergency_perl_save: begin write uuid\n";
		3805	write_uuid_sync 1;
		3806	info "emergency_perl_save: end write uuid\n";
		3807
		3808	cf::write_runtime_sync; # external watchdog should not bark
		3809
		3810	trace "emergency_perl_save: syncing database to disk";
		3811	BDB::db_env_txn_checkpoint $DB_ENV;
		3812
		3813	info "emergency_perl_save: starting sync\n";
		3814	IO::AIO::aio_sync sub {
		3815	info "emergency_perl_save: finished sync\n";
		3816	};
		3817
		3818	cf::write_runtime_sync; # external watchdog should not bark
		3819
		3820	trace "emergency_perl_save: flushing outstanding aio requests";
		3821	while (IO::AIO::nreqs || BDB::nreqs) {
		3822	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3823	}
		3824
		3825	cf::write_runtime_sync; # external watchdog should not bark
		3826	};
		3827
		3828	info "emergency_perl_save: leave\n";
		3829	}
		3830
		3831	sub post_cleanup {
		3832	my ($make_core) = @_;
		3833
		3834	IO::AIO::flush;
		3835
		3836	error Carp::longmess "post_cleanup backtrace"
		3837	if $make_core;
		3838
		3839	my $fh = pidfile;
		3840	unlink $PIDFILE if <$fh> == $$;
		3841	}
		3842
		3843	# a safer delete_package, copied from Symbol
		3844	sub clear_package($) {
		3845	my $pkg = shift;
		3846
		3847	# expand to full symbol table name if needed
		3848	unless ($pkg =~ /^main::.*::$/) {
		3849	$pkg = "main$pkg" if $pkg =~ /^::/;
		3850	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3851	$pkg .= '::' unless $pkg =~ /::$/;
		3852	}
		3853
		3854	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3855	my $stem_symtab = *{$stem}{HASH};
		3856
		3857	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3858	or return;
		3859
		3860	# clear all symbols
		3861	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3862	for my $name (keys %$leaf_symtab) {
		3863	_gv_clear *{"$pkg$name"};
		3864	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3865	}
		3866	}
		3867
		3868	sub do_reload_perl() {
		3869	# can/must only be called in main
		3870	unless (in_main) {
		3871	error "can only reload from main coroutine";
		3872	return;
		3873	}
		3874
		3875	return if $RELOAD++;
		3876
		3877	my $t1 = AE::time;
		3878
		3879	while ($RELOAD) {
		3880	cf::get_slot 0.1, -1, "reload_perl";
		3881	info "reloading...";
		3882
		3883	trace "entering sync_job";
		3884
		3885	cf::sync_job {
		3886	#cf::emergency_save;
		3887
		3888	trace "cancelling all extension coros";
		3889	$_->cancel for values %EXT_CORO;
		3890	%EXT_CORO = ();
		3891
		3892	trace "removing commands";
		3893	%COMMAND = ();
		3894
		3895	trace "removing ext/exti commands";
		3896	%EXTCMD = ();
		3897	%EXTICMD = ();
		3898
		3899	trace "unloading/nuking all extensions";
		3900	for my $pkg (@EXTS) {
		3901	trace "... unloading $pkg";
		3902
		3903	if (my $cb = $pkg->can ("unload")) {
		3904	eval {
		3905	$cb->($pkg);
		3906	1
		3907	} or error "$pkg unloaded, but with errors: $@";
		3908	}
		3909
		3910	trace "... clearing $pkg";
		3911	clear_package $pkg;
		3912	}
		3913
		3914	trace "unloading all perl modules loaded from $LIBDIR";
		3915	while (my ($k, $v) = each %INC) {
		3916	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3917
		3918	trace "... unloading $k";
		3919	delete $INC{$k};
		3920
		3921	$k =~ s/\.pm$//;
		3922	$k =~ s/\//::/g;
		3923
		3924	if (my $cb = $k->can ("unload_module")) {
		3925	$cb->();
		3926	}
		3927
		3928	clear_package $k;
		3929	}
		3930
		3931	trace "getting rid of safe::, as good as possible";
		3932	clear_package "safe::$_"
		3933	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3934
		3935	trace "unloading cf.pm \"a bit\"";
		3936	delete $INC{"cf.pm"};
		3937	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3938
		3939	# don't, removes xs symbols, too,
		3940	# and global variables created in xs
		3941	#clear_package __PACKAGE__;
		3942
		3943	info "unload completed, starting to reload now";
		3944
		3945	trace "reloading cf.pm";
		3946	require cf;
		3947	cf::_connect_to_perl_1;
		3948
		3949	trace "loading config and database again";
		3950	cf::reload_config;
		3951
		3952	trace "loading extensions";
		3953	cf::load_extensions;
		3954
		3955	if ($REATTACH_ON_RELOAD) {
		3956	trace "reattaching attachments to objects/players";
		3957	_global_reattach; # objects, sockets
		3958	trace "reattaching attachments to maps";
		3959	reattach $_ for values %MAP;
		3960	trace "reattaching attachments to players";
		3961	reattach $_ for values %PLAYER;
		3962	}
		3963
		3964	trace "running post_init jobs";
		3965	(pop @POST_INIT)->(1) while @POST_INIT;
		3966
		3967	trace "leaving sync_job";
		3968
		3969	1
		3970	} or do {
		3971	error $@;
		3972	cf::cleanup "error while reloading, exiting.";
		3973	};
		3974
		3975	info "reloaded";
		3976	--$RELOAD;
		3977	}
		3978
		3979	$t1 = AE::time - $t1;
		3980	info "reload completed in ${t1}s\n";
		3981	};
		3982
		3983	our $RELOAD_WATCHER; # used only during reload
		3984
		3985	sub reload_perl() {
		3986	# doing reload synchronously and two reloads happen back-to-back,
		3987	# coro crashes during coro_state_free->destroy here.
		3988
		3989	$RELOAD_WATCHER ||= cf::async {
		3990	Coro::AIO::aio_wait cache_extensions;
		3991
		3992	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		3993	do_reload_perl;
		3994	undef $RELOAD_WATCHER;
		3995	};
		3996	};
		3997	}
		3998
		3999	register_command "reload" => sub {
		4000	my ($who, $arg) = @_;
		4001
		4002	if ($who->flag (FLAG_WIZ)) {
		4003	$who->message ("reloading server.");
		4004	async {
		4005	$Coro::current->{desc} = "perl_reload";
		4006	reload_perl;
		4007	};
		4008	}
		4009	};
		4010
		4011	#############################################################################
		4012
		4013	my $bug_warning = 0;
		4014
		4015	our @WAIT_FOR_TICK;
		4016	our @WAIT_FOR_TICK_BEGIN;
		4017
		4018	sub wait_for_tick {
		4019	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4020
		4021	my $signal = new Coro::Signal;
		4022	push @WAIT_FOR_TICK, $signal;
		4023	$signal->wait;
		4024	}
		4025
		4026	sub wait_for_tick_begin {
		4027	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4028
		4029	my $signal = new Coro::Signal;
		4030	push @WAIT_FOR_TICK_BEGIN, $signal;
		4031	$signal->wait;
		4032	}
		4033
		4034	sub tick {
		4035	if ($Coro::current != $Coro::main) {
		4036	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4037	unless ++$bug_warning > 10;
		4038	return;
		4039	}
		4040
		4041	cf::server_tick; # one server iteration
		4042
		4043	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4044
		4045	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4046	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4047	Coro::async_pool {
		4048	$Coro::current->{desc} = "runtime saver";
		4049	write_runtime_sync
		4050	or error "ERROR: unable to write runtime file: $!";
		4051	};
		4052	}
		4053
		4054	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4055	$sig->send;
		4056	}
		4057	while (my $sig = shift @WAIT_FOR_TICK) {
		4058	$sig->send;
		4059	}
		4060
		4061	$LOAD = ($NOW - $TICK_START) / $TICK;
		4062	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4063
		4064	if (0) {
		4065	if ($NEXT_TICK) {
		4066	my $jitter = $TICK_START - $NEXT_TICK;
		4067	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4068	debug "jitter $JITTER\n";#d#
		4069	}
		4070	}
		4071	}
1001		4072
1002	{	4073	{
1003	my $path = cf::localdir . "/database.pst";	4074	# configure BDB
1004		4075
1005	sub db_load() {	4076	BDB::min_parallel 16;
1006	warn "loading database $path\n";#d# remove later	4077	BDB::max_poll_reqs $TICK * 0.1;
1007	$DB = stat $path ? Storable::retrieve $path : { };	4078	$AnyEvent::BDB::WATCHER->priority (1);
1008	}
1009		4079
1010	my $pid;	4080	unless ($DB_ENV) {
		4081	$DB_ENV = BDB::db_env_create;
		4082	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4083	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4084	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4085	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4086	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1011		4087
1012	sub db_save() {	4088	cf::sync_job {
1013	warn "saving database $path\n";#d# remove later
1014	waitpid $pid, 0 if $pid;
1015	if (0 == ($pid = fork)) {
1016	$DB->{_meta}{version} = 1;
1017	Storable::nstore $DB, "$path~";
1018	rename "$path~", $path;
1019	cf::_exit 0 if defined $pid;
1020	}
1021	}
1022
1023	my $dirty;
1024
1025	sub db_sync() {
1026	db_save if $dirty;
1027	undef $dirty;
1028	}
1029
1030	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1031	db_sync;
1032	});
1033
1034	sub db_dirty() {
1035	$dirty = 1;
1036	$idle->start;
1037	}
1038
1039	sub db_get($;$) {
1040	@_ >= 2
1041	? $DB->{$_[0]}{$_[1]}
1042	: ($DB->{$_[0]} ||= { })
1043	}
1044
1045	sub db_put($$;$) {
1046	if (@_ >= 3) {
1047	$DB->{$_[0]}{$_[1]} = $_[2];
1048	} else {	4089	eval {
1049	$DB->{$_[0]} = $_[1];	4090	BDB::db_env_open
1050	}	4091	$DB_ENV,
1051	db_dirty;	4092	$BDBDIR,
1052	}	4093	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4094	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4095	0666;
1053		4096
1054	attach_global	4097	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1055	prio => 10000,
1056	on_cleanup => sub {
1057	db_sync;
1058	},
1059	;
1060	}
1061
1062	#############################################################################
1063	# the server's main()
1064
1065	sub cfg_load {
1066	open my $fh, "<:utf8", cf::confdir . "/config"
1067	or return;
1068
1069	local $/;
1070	*CFG = YAML::Syck::Load <$fh>;
1071	}
1072
1073	sub main {
1074	cfg_load;
1075	db_load;
1076	load_extensions;
1077	Event::loop;
1078	}
1079
1080	#############################################################################
1081	# initialisation
1082
1083	sub _perl_reload(&) {
1084	my ($msg) = @_;
1085
1086	$msg->("reloading...");
1087
1088	eval {
1089	# cancel all watchers
1090	for (Event::all_watchers) {
1091	$_->cancel if $_->data & WF_AUTOCANCEL;
1092	}
1093
1094	# unload all extensions
1095	for (@exts) {
1096	$msg->("unloading <$_>");
1097	unload_extension $_;
1098	}
1099
1100	# unload all modules loaded from $LIBDIR
1101	while (my ($k, $v) = each %INC) {
1102	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1103
1104	$msg->("removing <$k>");
1105	delete $INC{$k};
1106
1107	$k =~ s/\.pm$//;
1108	$k =~ s/\//::/g;
1109
1110	if (my $cb = $k->can ("unload_module")) {
1111	$cb->();
1112	}	4098	};
1113		4099
1114	Symbol::delete_package $k;	4100	cf::cleanup "db_env_open(db): $@" if $@;
1115	}	4101	};
		4102	}
1116		4103
1117	# sync database to disk	4104	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1118	cf::db_sync;	4105	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1119
1120	# get rid of safe::, as good as possible
1121	Symbol::delete_package "safe::$_"
1122	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1123
1124	# remove register_script_function callbacks
1125	# TODO
1126
1127	# unload cf.pm "a bit"
1128	delete $INC{"cf.pm"};
1129
1130	# don't, removes xs symbols, too,
1131	# and global variables created in xs
1132	#Symbol::delete_package __PACKAGE__;
1133
1134	# reload cf.pm
1135	$msg->("reloading cf.pm");
1136	require cf;
1137
1138	# load config and database again
1139	cf::cfg_load;
1140	cf::db_load;
1141
1142	# load extensions
1143	$msg->("load extensions");
1144	cf::load_extensions;
1145
1146	# reattach attachments to objects
1147	$msg->("reattach");
1148	_global_reattach;
1149	};	4106	};
1150	$msg->($@) if $@;	4107	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1151		4108	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1152	$msg->("reloaded");
1153	};
1154
1155	sub perl_reload() {
1156	_perl_reload {
1157	warn $_[0];
1158	print "$_[0]\n";
1159	};	4109	};
		4110	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4111	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4112	};
1160	}	4113	}
1161		4114
1162	register "<global>", __PACKAGE__;	4115	{
		4116	# configure IO::AIO
1163		4117
1164	register_command "perl-reload" => sub {	4118	IO::AIO::min_parallel 8;
		4119	IO::AIO::max_poll_time $TICK * 0.1;
		4120	undef $AnyEvent::AIO::WATCHER;
		4121	}
		4122
		4123	my $_log_backtrace;
		4124
		4125	sub _log_backtrace {
1165	my ($who, $arg) = @_;	4126	my ($msg, @addr) = @_;
1166		4127
1167	if ($who->flag (FLAG_WIZ)) {	4128	$msg =~ s/\n//;
1168	_perl_reload {	4129
1169	warn $_[0];	4130	# limit the # of concurrent backtraces
1170	$who->message ($_[0]);	4131	if ($_log_backtrace < 2) {
		4132	++$_log_backtrace;
		4133	my $perl_bt = Carp::longmess $msg;
		4134	async {
		4135	$Coro::current->{desc} = "abt $msg";
		4136
		4137	my @bt = fork_call {
		4138	@addr = map { sprintf "%x", $_ } @addr;
		4139	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4140	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4141	or die "addr2line: $!";
		4142
		4143	my @funcs;
		4144	my @res = <$fh>;
		4145	chomp for @res;
		4146	while (@res) {
		4147	my ($func, $line) = splice @res, 0, 2, ();
		4148	push @funcs, "[$func] $line";
		4149	}
		4150
		4151	@funcs
		4152	};
		4153
		4154	LOG llevInfo, "[ABT] $perl_bt\n";
		4155	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4156	LOG llevInfo, "[ABT] $_\n" for @bt;
		4157	--$_log_backtrace;
1171	};	4158	};
1172	}	4159	} else {
1173	};	4160	LOG llevInfo, "[ABT] $msg\n";
1174		4161	LOG llevInfo, "[ABT] [suppressed]\n";
1175	unshift @INC, $LIBDIR;
1176
1177	$TICK_WATCHER = Event->timer (
1178	prio => 1,
1179	async => 1,
1180	at => $NEXT_TICK || 1,
1181	data => WF_AUTOCANCEL,
1182	cb => sub {
1183	cf::server_tick; # one server iteration
1184
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;
1187
1188	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1190
1191	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;
1193	},	4162	}
1194	);	4163	}
1195		4164
1196	IO::AIO::max_poll_time $TICK * 0.2;	4165	# load additional modules
		4166	require "cf/$_.pm" for @EXTRA_MODULES;
		4167	cf::_connect_to_perl_2;
1197		4168
1198	Event->io (fd => IO::AIO::poll_fileno,	4169	END { cf::emergency_save }
1199	poll => 'r',
1200	prio => 5,
1201	data => WF_AUTOCANCEL,
1202	cb => \&IO::AIO::poll_cb);
1203		4170
1204	1	4171	1
1205		4172

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