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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 2006 UTC vs.
Revision 1.557 by root, Tue Oct 5 21:40:05 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 ();
		58	use IO::AIO ();
10	use Time::HiRes;	59	use Time::HiRes;
11	use Event;	60	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
13		62
14	use strict;	63	AnyEvent::detect;
15		64
16	_reload_1;	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
17		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" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
		82
18	our %COMMAND = ();	83	our %COMMAND = ();
		84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
		87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	93	our @EVENT;
20	our %PROP_TYPE;	94	our @REFLECT; # set by XS
21	our %PROP_IDX;	95	our %REFLECT; # set by us
22	our $LIBDIR = maps_directory "perl";
23		96
24	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
25	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
26	our $NEXT_TICK;	121	our $NEXT_TICK;
		122	our $USE_FSYNC = 1; # use fsync to write maps - default on
27		123
28	BEGIN {	124	our $BDB_DEADLOCK_WATCHER;
29	*CORE::GLOBAL::warn = sub {	125	our $BDB_CHECKPOINT_WATCHER;
		126	our $BDB_TRICKLE_WATCHER;
		127	our $DB_ENV;
		128
		129	our @EXTRA_MODULES = qw(pod match mapscript incloader);
		130
		131	our %CFG;
		132
		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	}
		176
		177	#############################################################################
		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
		190	=head2 GLOBAL VARIABLES
		191
		192	=over 4
		193
		194	=item $cf::UPTIME
		195
		196	The timestamp of the server start (so not actually an uptime).
		197
		198	=item $cf::RUNTIME
		199
		200	The time this server has run, starts at 0 and is increased by $cf::TICK on
		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.
		215
		216	=item $cf::TICK
		217
		218	The interval between server ticks, in seconds.
		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
		230	=item %cf::CFG
		231
		232	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		233	from wherever your confdir points to.
		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 thread
		239	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		240
		241	=cut
		242
		243	sub wait_for_tick();
		244	sub wait_for_tick_begin();
		245
		246	=item @cf::INVOKE_RESULTS
		247
		248	This array contains the results of the last C<invoke ()> call. When
		249	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		250	that call.
		251
		252	=item %cf::REFLECT
		253
		254	Contains, for each (C++) class name, a hash reference with information
		255	about object members (methods, scalars, arrays and flags) and other
		256	metadata, which is useful for introspection.
		257
		258	=back
		259
		260	=cut
		261
		262	sub error(@) { LOG llevError, join "", @_ }
		263	sub warn (@) { LOG llevWarn , join "", @_ }
		264	sub info (@) { LOG llevInfo , join "", @_ }
		265	sub debug(@) { LOG llevDebug, join "", @_ }
		266	sub trace(@) { LOG llevTrace, join "", @_ }
		267
		268	$Coro::State::WARNHOOK = sub {
30	my $msg = join "", @_;	269	my $msg = join "", @_;
		270
31	$msg .= "\n"	271	$msg .= "\n"
32	unless $msg =~ /\n$/;	272	unless $msg =~ /\n$/;
33		273
34	print STDERR "cfperl: $msg";	274	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
35	LOG llevError, "cfperl: $msg";
36	};
37	}
38		275
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	276	LOG llevWarn, $msg;
		277	};
40		278
41	# generate property mutators	279	$Coro::State::DIEHOOK = sub {
42	sub prop_gen {	280	return unless $^S eq 0; # "eq", not "=="
43	my ($prefix, $class) = @_;
44		281
45	no strict 'refs';	282	error Carp::longmess $_[0];
46		283
47	for my $prop (keys %PROP_TYPE) {	284	if (in_main) {#d#
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	285	error "DIEHOOK called in main context, Coro bug?\n";#d#
49	my $sub = lc $1;	286	return;#d#
		287	}#d#
50		288
51	my $type = $PROP_TYPE{$prop};	289	# kill coroutine otherwise
52	my $idx = $PROP_IDX {$prop};	290	Coro::terminate
		291	};
53		292
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	293	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	294	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
56	};	295	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
57		296	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
58	*{"$class\::set_$sub"} = sub {	297	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
59	$_[0]->set_property ($type, $idx, $_[1]);	298	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	299	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		300
75	# we bless all objects into (empty) derived classes to force a method lookup	301	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	302	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	303	for my $pkg (qw(
78	no strict 'refs';	304	cf::global cf::attachable
		305	cf::object cf::object::player
		306	cf::client cf::player
		307	cf::arch cf::living
		308	cf::map cf::mapspace
		309	cf::party cf::region
		310	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	311	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	312	}
81		313
82	$Event::DIED = sub {	314	$EV::DIED = sub {
83	warn "error in event callback: @_";	315	Carp::cluck "error in event callback: @_";
84	};	316	};
85		317
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	318	#############################################################################
93	# utility functions
94		319
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	320	=head2 UTILITY FUNCTIONS
96		321
97	sub from_json($) {	322	=over 4
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101		323
102	sub to_json($) {	324	=item dumpval $ref
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	325
104	JSON::Syck::Dump $_[0]	326	=cut
		327
		328	sub dumpval {
		329	eval {
		330	local $SIG{__DIE__};
		331	my $d;
		332	if (1) {
		333	$d = new Data::Dumper([$_[0]], ["*var"]);
		334	$d->Terse(1);
		335	$d->Indent(2);
		336	$d->Quotekeys(0);
		337	$d->Useqq(1);
		338	#$d->Bless(...);
		339	$d->Seen($_[1]) if @_ > 1;
		340	$d = $d->Dump();
		341	}
		342	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		343	$d
		344	} || "[unable to dump $_[0]: '$@']";
105	}	345	}
		346
		347	=item $ref = cf::decode_json $json
		348
		349	Converts a JSON string into the corresponding perl data structure.
		350
		351	=item $json = cf::encode_json $ref
		352
		353	Converts a perl data structure into its JSON representation.
		354
		355	=cut
		356
		357	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		358
		359	sub encode_json($) { $json_coder->encode ($_[0]) }
		360	sub decode_json($) { $json_coder->decode ($_[0]) }
		361
		362	=item $ref = cf::yaml_load $scalar
		363
		364	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		365
		366	=cut
		367
		368	sub fork_call(&@);
		369
		370	sub yaml_load($) {
		371	fork_call { YAML::XS::Load $_[0] } @_
		372	}
		373
		374	=item cf::post_init { BLOCK }
		375
		376	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		377	but I<before> the server starts ticking again.
		378
		379	The codeblock will have a single boolean argument to indicate whether this
		380	is a reload or not.
		381
		382	=cut
		383
		384	sub post_init(&) {
		385	push @POST_INIT, shift;
		386	}
		387
		388	sub _post_init {
		389	trace "running post_init jobs";
		390
		391	# run them in parallel...
		392
		393	my @join;
		394
		395	while () {
		396	push @join, map &Coro::async ($_, 0), @POST_INIT;
		397	@POST_INIT = ();
		398
		399	@join or last;
		400
		401	(pop @join)->join;
		402	}
		403	}
		404
		405	=item cf::lock_wait $string
		406
		407	Wait until the given lock is available. See cf::lock_acquire.
		408
		409	=item my $lock = cf::lock_acquire $string
		410
		411	Wait until the given lock is available and then acquires it and returns
		412	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		413	for example when the coroutine gets canceled), the lock is automatically
		414	returned.
		415
		416	Locks are *not* recursive, locking from the same coro twice results in a
		417	deadlocked coro.
		418
		419	Lock names should begin with a unique identifier (for example, cf::map::find
		420	uses map_find and cf::map::load uses map_load).
		421
		422	=item $locked = cf::lock_active $string
		423
		424	Return true if the lock is currently active, i.e. somebody has locked it.
		425
		426	=cut
		427
		428	our $LOCKS = new Coro::SemaphoreSet;
		429
		430	sub lock_wait($) {
		431	$LOCKS->wait ($_[0]);
		432	}
		433
		434	sub lock_acquire($) {
		435	$LOCKS->guard ($_[0])
		436	}
		437
		438	sub lock_active($) {
		439	$LOCKS->count ($_[0]) < 1
		440	}
		441
		442	sub freeze_mainloop {
		443	tick_inhibit_inc;
		444
		445	&Guard::guard (\&tick_inhibit_dec);
		446	}
		447
		448	=item cf::periodic $interval, $cb
		449
		450	Like EV::periodic, but randomly selects a starting point so that the actions
		451	get spread over time.
		452
		453	=cut
		454
		455	sub periodic($$) {
		456	my ($interval, $cb) = @_;
		457
		458	my $start = rand List::Util::min 180, $interval;
		459
		460	EV::periodic $start, $interval, 0, $cb
		461	}
		462
		463	=item cf::get_slot $time[, $priority[, $name]]
		464
		465	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		466	This call blocks and returns only when you have at least C<$time> seconds
		467	of cpu time till the next tick. The slot is only valid till the next cede.
		468
		469	The optional C<$name> can be used to identify the job to run. It might be
		470	used for statistical purposes and should identify the same time-class.
		471
		472	Useful for short background jobs.
		473
		474	=cut
		475
		476	our @SLOT_QUEUE;
		477	our $SLOT_QUEUE;
		478	our $SLOT_DECAY = 0.9;
		479
		480	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		481	$SLOT_QUEUE = Coro::async {
		482	$Coro::current->desc ("timeslot manager");
		483
		484	my $signal = new Coro::Signal;
		485	my $busy;
		486
		487	while () {
		488	next_job:
		489
		490	my $avail = cf::till_tick;
		491
		492	for (0 .. $#SLOT_QUEUE) {
		493	if ($SLOT_QUEUE[$_][0] <= $avail) {
		494	$busy = 0;
		495	my $job = splice @SLOT_QUEUE, $_, 1, ();
		496	$job->[2]->send;
		497	Coro::cede;
		498	goto next_job;
		499	} else {
		500	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		501	}
		502	}
		503
		504	if (@SLOT_QUEUE) {
		505	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		506	push @cf::WAIT_FOR_TICK, $signal;
		507	$signal->wait;
		508	} else {
		509	$busy = 0;
		510	Coro::schedule;
		511	}
		512	}
		513	};
		514
		515	sub get_slot($;$$) {
		516	return if tick_inhibit || $Coro::current == $Coro::main;
		517
		518	my ($time, $pri, $name) = @_;
		519
		520	$time = clamp $time, 0.01, $TICK * .6;
		521
		522	my $sig = new Coro::Signal;
		523
		524	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		525	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		526	$SLOT_QUEUE->ready;
		527	$sig->wait;
		528	}
		529
		530	=item cf::async { BLOCK }
		531
		532	Currently the same as Coro::async_pool, meaning you cannot use
		533	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		534	thing you are allowed to do is call C<prio> on it.
		535
		536	=cut
		537
		538	BEGIN { *async = \&Coro::async_pool }
		539
		540	=item cf::sync_job { BLOCK }
		541
		542	The design of Deliantra requires that the main coroutine ($Coro::main)
		543	is always able to handle events or runnable, as Deliantra is only
		544	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		545	acceptable.
		546
		547	If it must be done, put the blocking parts into C<sync_job>. This will run
		548	the given BLOCK in another coroutine while waiting for the result. The
		549	server will be frozen during this time, so the block should either finish
		550	fast or be very important.
		551
		552	=cut
		553
		554	sub sync_job(&) {
		555	my ($job) = @_;
		556
		557	if (in_main) {
		558	my $time = AE::time;
		559
		560	# this is the main coro, too bad, we have to block
		561	# till the operation succeeds, freezing the server :/
		562
		563	#LOG llevError, Carp::longmess "sync job";#d#
		564
		565	my $freeze_guard = freeze_mainloop;
		566
		567	my $busy = 1;
		568	my @res;
		569
		570	(async {
		571	$Coro::current->desc ("sync job coro");
		572	@res = eval { $job->() };
		573	error $@ if $@;
		574	undef $busy;
		575	})->prio (Coro::PRIO_MAX);
		576
		577	while ($busy) {
		578	if (Coro::nready) {
		579	Coro::cede_notself;
		580	} else {
		581	EV::loop EV::LOOP_ONESHOT;
		582	}
		583	}
		584
		585	my $time = AE::time - $time;
		586
		587	$TICK_START += $time; # do not account sync jobs to server load
		588
		589	wantarray ? @res : $res[0]
		590	} else {
		591	# we are in another coroutine, how wonderful, everything just works
		592
		593	$job->()
		594	}
		595	}
		596
		597	=item $coro = cf::async_ext { BLOCK }
		598
		599	Like async, but this coro is automatically being canceled when the
		600	extension calling this is being unloaded.
		601
		602	=cut
		603
		604	sub async_ext(&) {
		605	my $cb = shift;
		606
		607	my $coro = &Coro::async ($cb);
		608
		609	$coro->on_destroy (sub {
		610	delete $EXT_CORO{$coro+0};
		611	});
		612	$EXT_CORO{$coro+0} = $coro;
		613
		614	$coro
		615	}
		616
		617	=item fork_call { }, @args
		618
		619	Executes the given code block with the given arguments in a seperate
		620	process, returning the results. Everything must be serialisable with
		621	Coro::Storable. May, of course, block. Note that the executed sub may
		622	never block itself or use any form of event handling.
		623
		624	=cut
		625
		626	sub post_fork {
		627	reset_signals;
		628	}
		629
		630	sub fork_call(&@) {
		631	my ($cb, @args) = @_;
		632
		633	# we seemingly have to make a local copy of the whole thing,
		634	# otherwise perl prematurely frees the stuff :/
		635	# TODO: investigate and fix (likely this will be rather laborious)
		636
		637	my @res = Coro::Util::fork_eval {
		638	cf::post_fork;
		639	&$cb
		640	} @args;
		641
		642	wantarray ? @res : $res[-1]
		643	}
		644
		645	sub objinfo {
		646	(
		647	"counter value" => cf::object::object_count,
		648	"objects created" => cf::object::create_count,
		649	"objects destroyed" => cf::object::destroy_count,
		650	"freelist size" => cf::object::free_count,
		651	"allocated objects" => cf::object::objects_size,
		652	"active objects" => cf::object::actives_size,
		653	)
		654	}
		655
		656	=item $coin = coin_from_name $name
		657
		658	=cut
		659
		660	our %coin_alias = (
		661	"silver" => "silvercoin",
		662	"silvercoin" => "silvercoin",
		663	"silvercoins" => "silvercoin",
		664	"gold" => "goldcoin",
		665	"goldcoin" => "goldcoin",
		666	"goldcoins" => "goldcoin",
		667	"platinum" => "platinacoin",
		668	"platinumcoin" => "platinacoin",
		669	"platinumcoins" => "platinacoin",
		670	"platina" => "platinacoin",
		671	"platinacoin" => "platinacoin",
		672	"platinacoins" => "platinacoin",
		673	"royalty" => "royalty",
		674	"royalties" => "royalty",
		675	);
		676
		677	sub coin_from_name($) {
		678	$coin_alias{$_[0]}
		679	? cf::arch::find $coin_alias{$_[0]}
		680	: undef
		681	}
		682
		683	=item $value = cf::db_get $family => $key
		684
		685	Returns a single value from the environment database.
		686
		687	=item cf::db_put $family => $key => $value
		688
		689	Stores the given C<$value> in the family. It can currently store binary
		690	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		691
		692	=item $db = cf::db_table "name"
		693
		694	Create and/or open a new database table. The string must not be "db" and must be unique
		695	within each server.
		696
		697	=cut
		698
		699	sub db_table($) {
		700	cf::error "db_get called from main context"
		701	if $Coro::current == $Coro::main;
		702
		703	my ($name) = @_;
		704	my $db = BDB::db_create $DB_ENV;
		705
		706	eval {
		707	$db->set_flags (BDB::CHKSUM);
		708
		709	utf8::encode $name;
		710	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		711	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		712	cf::cleanup "db_open(db): $!" if $!;
		713	};
		714	cf::cleanup "db_open(db): $@" if $@;
		715
		716	$db
		717	}
		718
		719	our $DB;
		720
		721	sub db_init {
		722	$DB ||= db_table "db";
		723	}
		724
		725	sub db_get($$) {
		726	my $key = "$_[0]/$_[1]";
		727
		728	cf::error "db_get called from main context"
		729	if $Coro::current == $Coro::main;
		730
		731	BDB::db_get $DB, undef, $key, my $data;
		732
		733	$! ? ()
		734	: $data
		735	}
		736
		737	sub db_put($$$) {
		738	BDB::dbreq_pri 4;
		739	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		740	}
		741
		742	=item cf::cache $id => [$paths...], $processversion => $process
		743
		744	Generic caching function that returns the value of the resource $id,
		745	caching and regenerating as required.
		746
		747	This function can block.
		748
		749	=cut
		750
		751	sub cache {
		752	my ($id, $src, $processversion, $process) = @_;
		753
		754	my $meta =
		755	join "\x00",
		756	$processversion,
		757	map {
		758	aio_stat $_
		759	and Carp::croak "$_: $!";
		760
		761	($_, (stat _)[7,9])
		762	} @$src;
		763
		764	my $dbmeta = db_get cache => "$id/meta";
		765	if ($dbmeta ne $meta) {
		766	# changed, we may need to process
		767
		768	my @data;
		769	my $md5;
		770
		771	for (0 .. $#$src) {
		772	0 <= aio_load $src->[$_], $data[$_]
		773	or Carp::croak "$src->[$_]: $!";
		774	}
		775
		776	# if processing is expensive, check
		777	# checksum first
		778	if (1) {
		779	$md5 =
		780	join "\x00",
		781	$processversion,
		782	map {
		783	cf::cede_to_tick;
		784	($src->[$_], Digest::MD5::md5_hex $data[$_])
		785	} 0.. $#$src;
		786
		787
		788	my $dbmd5 = db_get cache => "$id/md5";
		789	if ($dbmd5 eq $md5) {
		790	db_put cache => "$id/meta", $meta;
		791
		792	return db_get cache => "$id/data";
		793	}
		794	}
		795
		796	my $t1 = Time::HiRes::time;
		797	my $data = $process->(\@data);
		798	my $t2 = Time::HiRes::time;
		799
		800	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		801
		802	db_put cache => "$id/data", $data;
		803	db_put cache => "$id/md5" , $md5;
		804	db_put cache => "$id/meta", $meta;
		805
		806	return $data;
		807	}
		808
		809	db_get cache => "$id/data"
		810	}
		811
		812	=item cf::datalog type => key => value, ...
		813
		814	Log a datalog packet of the given type with the given key-value pairs.
		815
		816	=cut
		817
		818	sub datalog($@) {
		819	my ($type, %kv) = @_;
		820	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		821	}
		822
		823	=back
		824
		825	=cut
106		826
107	#############################################################################	827	#############################################################################
108	# "new" plug-in system
109		828
		829	=head2 ATTACHABLE OBJECTS
		830
		831	Many objects in deliantra are so-called attachable objects. That means you can
		832	attach callbacks/event handlers (a collection of which is called an "attachment")
		833	to it. All such attachable objects support the following methods.
		834
		835	In the following description, CLASS can be any of C<global>, C<object>
		836	C<player>, C<client> or C<map> (i.e. the attachable objects in
		837	Deliantra).
		838
		839	=over 4
		840
110	=item $object->attach ($attachment, key => $value...)	841	=item $attachable->attach ($attachment, key => $value...)
111		842
112	Attach a pre-registered attachment to an object.	843	=item $attachable->detach ($attachment)
113		844
114	=item $player->attach ($attachment, key => $value...)	845	Attach/detach a pre-registered attachment to a specific object and give it
		846	the specified key/value pairs as arguments.
115		847
116	Attach a pre-registered attachment to a player.	848	Example, attach a minesweeper attachment to the given object, making it a
		849	10x10 minesweeper game:
117		850
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	851	$obj->attach (minesweeper => width => 10, height => 10);
119		852
120	Attach a pre-registered attachment to a map.	853	=item $bool = $attachable->attached ($name)
121		854
122	=item cf::attach_global ...	855	Checks wether the named attachment is currently attached to the object.
123		856
124	Attach handlers for global events.	857	=item cf::CLASS->attach ...
125		858
126	This and all following C<attach_*>-functions expect any number of the	859	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	860
		861	Define an anonymous attachment and attach it to all objects of the given
		862	CLASS. See the next function for an explanation of its arguments.
		863
		864	You can attach to global events by using the C<cf::global> class.
		865
		866	Example, log all player logins:
		867
		868	cf::player->attach (
		869	on_login => sub {
		870	my ($pl) = @_;
		871	...
		872	},
		873	);
		874
		875	Example, attach to the jeweler skill:
		876
		877	cf::object->attach (
		878	type => cf::SKILL,
		879	subtype => cf::SK_JEWELER,
		880	on_use_skill => sub {
		881	my ($sk, $ob, $part, $dir, $msg) = @_;
		882	...
		883	},
		884	);
		885
		886	=item cf::CLASS::attachment $name, ...
		887
		888	Register an attachment by C<$name> through which attachable objects of the
		889	given CLASS can refer to this attachment.
		890
		891	Some classes such as deliantra maps and objects can specify attachments
		892	that are attached at load/instantiate time, thus the need for a name.
		893
		894	These calls expect any number of the following handler/hook descriptions:
128		895
129	=over 4	896	=over 4
130		897
131	=item prio => $number	898	=item prio => $number
132		899
…		…
134	by another C<prio> setting). Lower priority handlers get executed	901	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	902	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	903	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	904	unless you know what you are doing.
138		905
		906	=item type => $type
		907
		908	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		909	given type of objects only (the additional parameter C<subtype> can be
		910	used to further limit to the given subtype).
		911
139	=item on_I<event> => \&cb	912	=item on_I<event> => \&cb
140		913
141	Call the given code reference whenever the named event happens (event is	914	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	915	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	916	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	925	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	926	object/class are recognised.
154		927
155	=back	928	=back
156		929
157	=item cf::attach_to_type $object_type, $subtype, ...	930	Example, define an attachment called "sockpuppet" that calls the given
		931	event handler when a monster attacks:
158		932
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	933	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	934	on_skill_attack => sub {
161	type.	935	my ($self, $victim) = @_;
		936	...
		937	}
		938	}
162		939
163	=item cf::attach_to_objects ...	940	=item $attachable->valid
164		941
165	Attach handlers to all objects. Do not use this except for debugging or	942	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	943	C-level object still exists. If you try to access an object that has no
167	the game.	944	valid C counterpart anymore you get an exception at runtime. This method
168		945	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	946	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		947
179	=cut	948	=cut
180		949
181	# the following variables are defined in .xs and must not be re-created	950	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	951	our @CB_GLOBAL = (); # registry for all global events
		952	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	953	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	954	our @CB_PLAYER = ();
		955	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	956	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	957	our @CB_MAP = ();
187		958
188	my %attachment;	959	my %attachment;
189		960
		961	sub cf::attachable::thawer_merge {
		962	# simply override everything except _meta
		963	local $_[0]{_meta};
		964	%{$_[0]} = %{$_[1]};
		965	}
		966
190	sub _attach_cb($\%$$$) {	967	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	968	my ($registry, $event, $prio, $cb) = @_;
192		969
193	use sort 'stable';	970	use sort 'stable';
194		971
195	$cb = [$prio, $cb];	972	$cb = [$prio, $cb];
196		973
197	@{$registry->[$event]} = sort	974	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	975	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	976	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	977	}
		978
		979	# hack
		980	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		981
204	# attach handles attaching event callbacks	982	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	983	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	984	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	985	sub _attach {
208	my ($registry, $klass, @arg) = @_;	986	my ($registry, $klass, @arg) = @_;
209		987
		988	my $object_type;
210	my $prio = 0;	989	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	990	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		991
		992	#TODO: get rid of this hack
		993	if ($attachable_klass{$klass}) {
		994	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		995	}
218		996
219	while (@arg) {	997	while (@arg) {
220	my $type = shift @arg;	998	my $type = shift @arg;
221		999
222	if ($type eq "prio") {	1000	if ($type eq "prio") {
223	$prio = shift @arg;	1001	$prio = shift @arg;
224		1002
		1003	} elsif ($type eq "type") {
		1004	$object_type = shift @arg;
		1005	$registry = $CB_TYPE[$object_type] ||= [];
		1006
		1007	} elsif ($type eq "subtype") {
		1008	defined $object_type or Carp::croak "subtype specified without type";
		1009	my $object_subtype = shift @arg;
		1010	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1011
225	} elsif ($type eq "package") {	1012	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	1013	my $pkg = shift @arg;
227		1014
228	while (my ($name, $id) = each %cb_id) {	1015	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	1016	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	1017	_attach_cb $registry, $id, $prio, $cb;
231	}	1018	}
232	}	1019	}
233		1020
234	} elsif (exists $cb_id{$type}) {	1021	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	1022	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		1023
237	} elsif (ref $type) {	1024	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	1025	error "attaching objects not supported, ignoring.\n";
239		1026
240	} else {	1027	} else {
241	shift @arg;	1028	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	1029	error "attach argument '$type' not supported, ignoring.\n";
243	}	1030	}
244	}	1031	}
245
246	\%undo
247	}	1032	}
248		1033
249	sub _attach_attachment {	1034	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	1035	my ($obj, $name, %arg) = @_;
251		1036
252	my $res;	1037	return if exists $obj->{_attachment}{$name};
253		1038
254	if (my $attach = $attachment{$name}) {	1039	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	1040	my $registry = $obj->registry;
256		1041
257	for (@$attach) {	1042	for (@$attach) {
258	my ($klass, @attach) = @$_;	1043	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	1044	_attach $registry, $klass, @attach;
260	}	1045	}
261		1046
262	$obj->{$name} = \%arg;	1047	$obj->{$name} = \%arg;
263	} else {	1048	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	1049	info "object uses attachment '$name' which is not available, postponing.\n";
265	}	1050	}
266		1051
267	push @{$obj->{_attachment}}, $name;	1052	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	1053	}
272		1054
273	sub cf::object::attach {	1055	sub cf::attachable::attach {
		1056	if (ref $_[0]) {
		1057	_object_attach @_;
		1058	} else {
		1059	_attach shift->_attach_registry, @_;
		1060	}
		1061	_recalc_want;
		1062	};
		1063
		1064	# all those should be optimised
		1065	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	1066	my ($obj, $name) = @_;
275		1067
276	_attach_attachment $obj, $name, %arg;	1068	if (ref $obj) {
277	}	1069	delete $obj->{_attachment}{$name};
		1070	reattach ($obj);
		1071	} else {
		1072	Carp::croak "cannot, currently, detach class attachments";
		1073	}
		1074	_recalc_want;
		1075	};
278		1076
279	sub cf::player::attach {	1077	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	1078	my ($obj, $name) = @_;
281		1079
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	1080	exists $obj->{_attachment}{$name}
283	}	1081	}
284		1082
285	sub cf::map::attach {	1083	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	1084	eval "#line " . __LINE__ . " 'cf.pm'
		1085	sub cf::\L$klass\E::_attach_registry {
		1086	(\\\@CB_$klass, KLASS_$klass)
		1087	}
287		1088
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	1089	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	1090	my \$name = shift;
316		1091
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	1092	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1093	}
		1094	";
		1095	die if $@;
318	}	1096	}
319		1097
320	our $override;	1098	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1099	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		1100
323	sub override {	1101	sub override {
324	$override = 1;	1102	$override = 1;
325	@invoke_results = ();	1103	@INVOKE_RESULTS = (@_);
326	}	1104	}
327		1105
328	sub do_invoke {	1106	sub do_invoke {
329	my $event = shift;	1107	my $event = shift;
330	my $callbacks = shift;	1108	my $callbacks = shift;
331		1109
332	@invoke_results = ();	1110	@INVOKE_RESULTS = ();
333		1111
334	local $override;	1112	local $override;
335		1113
336	for (@$callbacks) {	1114	for (@$callbacks) {
337	eval { &{$_->[1]} };	1115	eval { &{$_->[1]} };
338		1116
339	if ($@) {	1117	if ($@) {
340	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	1118	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	1119	override;
343	}	1120	}
344		1121
345	return 1 if $override;	1122	return 1 if $override;
346	}	1123	}
347		1124
348	0	1125	0
349	}	1126	}
		1127
		1128	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1129
		1130	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1131
		1132	Generate an object-specific event with the given arguments.
		1133
		1134	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1135	removed in future versions), and there is no public API to access override
		1136	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1137
		1138	=back
		1139
		1140	=cut
350		1141
351	#############################################################################	1142	#############################################################################
352	# object support	1143	# object support
353		1144
354	sub instantiate {	1145	sub _object_equal($$);
		1146	sub _object_equal($$) {
		1147	my ($a, $b) = @_;
		1148
		1149	return 0 unless (ref $a) eq (ref $b);
		1150
		1151	if ("HASH" eq ref $a) {
		1152	my @ka = keys %$a;
		1153	my @kb = keys %$b;
		1154
		1155	return 0 if @ka != @kb;
		1156
		1157	for (0 .. $#ka) {
		1158	return 0 unless $ka[$_] eq $kb[$_];
		1159	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1160	}
		1161
		1162	} elsif ("ARRAY" eq ref $a) {
		1163
		1164	return 0 if @$a != @$b;
		1165
		1166	for (0 .. $#$a) {
		1167	return 0 unless _object_equal $a->[$_], $b->[$_];
		1168	}
		1169
		1170	} elsif ($a ne $b) {
		1171	return 0;
		1172	}
		1173
		1174	1
		1175	}
		1176
		1177	our $SLOW_MERGES;#d#
		1178	sub _can_merge {
355	my ($obj, $data) = @_;	1179	my ($ob1, $ob2) = @_;
356		1180
357	$data = from_json $data;	1181	++$SLOW_MERGES;#d#
358		1182
359	for (@$data) {	1183	# we do the slow way here
360	my ($name, $args) = @$_;	1184	return _object_equal $ob1, $ob2
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}	1185	}
365		1186
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	1187	sub reattach {
		1188	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	1189	my ($obj) = @_;
		1190
		1191	# no longer needed after getting rid of delete_package?
		1192	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1193
369	my $registry = $obj->registry;	1194	my $registry = $obj->registry;
370		1195
371	@$registry = ();	1196	@$registry = ();
372		1197
373	delete $obj->{_attachment} unless @{ $obj->{_attachment} || [] };	1198	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		1199
375	for my $name (@{ $obj->{_attachment} || [] }) {	1200	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	1201	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	1202	for (@$attach) {
378	my ($klass, @attach) = @$_;	1203	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	1204	_attach $registry, $klass, @attach;
380	}	1205	}
381	} else {	1206	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	1207	info "object uses attachment '$name' that is not available, postponing.\n";
383	}	1208	}
		1209	}
		1210	}
		1211
		1212	cf::attachable->attach (
		1213	prio => -1000000,
		1214	on_instantiate => sub {
		1215	my ($obj, $data) = @_;
		1216
		1217	$data = decode_json $data;
		1218
		1219	for (@$data) {
		1220	my ($name, $args) = @$_;
		1221
		1222	$obj->attach ($name, %{$args || {} });
		1223	}
384	}	1224	},
385	}	1225	on_reattach => \&reattach,
		1226	on_clone => sub {
		1227	my ($src, $dst) = @_;
		1228
		1229	@{$dst->registry} = @{$src->registry};
		1230
		1231	%$dst = %$src;
		1232
		1233	%{$dst->{_attachment}} = %{$src->{_attachment}}
		1234	if exists $src->{_attachment};
		1235	},
		1236	);
386		1237
387	sub object_freezer_save {	1238	sub object_freezer_save {
388	my ($filename, $objs) = @_;	1239	my ($filename, $rdata, $objs) = @_;
389		1240
390	$filename .= ".pst";	1241	sync_job {
		1242	if (length $$rdata) {
		1243	utf8::decode (my $decname = $filename);
		1244	trace sprintf "saving %s (%d,%d)\n",
		1245	$decname, length $$rdata, scalar @$objs
		1246	if $VERBOSE_IO;
391		1247
392	if (@$objs) {	1248	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
393	open my $fh, ">:raw", "$filename~";
394	chmod $fh, SAVE_MODE;	1249	aio_chmod $fh, SAVE_MODE;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1250	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1251	if ($cf::USE_FSYNC) {
		1252	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1253	aio_fsync $fh;
		1254	}
396	close $fh;	1255	aio_close $fh;
		1256
		1257	if (@$objs) {
		1258	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1259	aio_chmod $fh, SAVE_MODE;
		1260	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1261	aio_write $fh, 0, (length $data), $data, 0;
		1262	if ($cf::USE_FSYNC) {
		1263	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1264	aio_fsync $fh;
		1265	}
		1266	aio_close $fh;
		1267	aio_rename "$filename.pst~", "$filename.pst";
		1268	}
		1269	} else {
		1270	aio_unlink "$filename.pst";
		1271	}
		1272
397	rename "$filename~", $filename;	1273	aio_rename "$filename~", $filename;
		1274
		1275	$filename =~ s%/[^/]+$%%;
		1276	aio_pathsync $filename if $cf::USE_FSYNC;
		1277	} else {
		1278	error "unable to save objects: $filename~: $!\n";
		1279	}
398	} else {	1280	} else {
399	unlink $filename;	1281	aio_unlink $filename;
		1282	aio_unlink "$filename.pst";
		1283	}
400	}	1284	};
		1285	}
		1286
		1287	sub object_freezer_as_string {
		1288	my ($rdata, $objs) = @_;
		1289
		1290	use Data::Dumper;
		1291
		1292	$$rdata . Dumper $objs
401	}	1293	}
402		1294
403	sub object_thawer_load {	1295	sub object_thawer_load {
404	my ($filename) = @_;	1296	my ($filename) = @_;
405		1297
406	open my $fh, "<:raw:perlio", "$filename.pst"	1298	my ($data, $av);
		1299
		1300	(aio_load $filename, $data) >= 0
407	or return;	1301	or return;
408		1302
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }	1303	unless (aio_stat "$filename.pst") {
410	}	1304	(aio_load "$filename.pst", $av) >= 0
		1305	or return;
411		1306
412	attach_to_objects	1307	my $st = eval { Coro::Storable::thaw $av };
413	prio => -1000000,	1308	$av = $st->{objs};
414	on_clone => sub {
415	my ($src, $dst) = @_;
416
417	@{$dst->registry} = @{$src->registry};
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423	},	1309	}
424	;	1310
		1311	utf8::decode (my $decname = $filename);
		1312	trace sprintf "loading %s (%d,%d)\n",
		1313	$decname, length $data, scalar @{$av || []}
		1314	if $VERBOSE_IO;
		1315
		1316	($data, $av)
		1317	}
		1318
		1319	=head2 COMMAND CALLBACKS
		1320
		1321	=over 4
		1322
		1323	=cut
425		1324
426	#############################################################################	1325	#############################################################################
427	# old plug-in events	1326	# command handling &c
428		1327
429	sub inject_event {	1328	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		1329
433	my $cb = $hook[$event_code]{$extension}	1330	Register a callback for execution when the client sends the user command
434	or return;	1331	$name.
435		1332
436	&$cb	1333	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		1334
458	sub register_command {	1335	sub register_command {
459	my ($name, $time, $cb) = @_;	1336	my ($name, $cb) = @_;
460		1337
461	my $caller = caller;	1338	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	1339	#warn "registering command '$name/$time' to '$caller'";
463		1340
464	push @{ $command{$name} }, [$time, $cb, $caller];	1341	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	1342	}
		1343
		1344	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1345
		1346	Register a callback for execution when the client sends an (synchronous)
		1347	extcmd packet. Ext commands will be processed in the order they are
		1348	received by the server, like other user commands. The first argument is
		1349	the logged-in player. Ext commands can only be processed after a player
		1350	has logged in successfully.
		1351
		1352	If the callback returns something, it is sent back as if reply was being
		1353	called.
		1354
		1355	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1356
		1357	Register a callback for execution when the client sends an (asynchronous)
		1358	exticmd packet. Exti commands are processed by the server as soon as they
		1359	are received, i.e. out of order w.r.t. other commands. The first argument
		1360	is a client socket. Exti commands can be received anytime, even before
		1361	log-in.
		1362
		1363	If the callback returns something, it is sent back as if reply was being
		1364	called.
		1365
		1366	=cut
467		1367
468	sub register_extcmd {	1368	sub register_extcmd {
469	my ($name, $cb) = @_;	1369	my ($name, $cb) = @_;
470		1370
471	my $caller = caller;	1371	$EXTCMD{$name} = $cb;
472	#warn "registering extcmd '$name' to '$caller'";
473
474	$extcmd{$name} = [$cb, $caller];
475	}	1372	}
476		1373
477	sub register {	1374	sub register_exticmd {
478	my ($base, $pkg) = @_;	1375	my ($name, $cb) = @_;
479		1376
480	#TODO	1377	$EXTICMD{$name} = $cb;
481	}	1378	}
482		1379
483	sub load_extension {	1380	use File::Glob ();
484	my ($path) = @_;
485		1381
486	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1382	cf::player->attach (
487	my $base = $1;	1383	on_unknown_command => sub {
488	my $pkg = $1;	1384	my ($pl, $name, $params) = @_;
489	$pkg =~ s/[^[:word:]]/_/g;
490	$pkg = "ext::$pkg";
491		1385
492	warn "loading '$path' into '$pkg'\n";	1386	my $cb = $COMMAND{$name}
		1387	or return;
493		1388
494	open my $fh, "<:utf8", $path	1389	for my $cmd (@$cb) {
495	or die "$path: $!";	1390	$cmd->[1]->($pl->ob, $params);
496
497	my $source =
498	"package $pkg; use strict; use utf8;\n"
499	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })
501	. "\n};\n1";
502
503	eval $source
504	or die "$path: $@";
505
506	push @exts, $pkg;
507	$ext_pkg{$base} = $pkg;
508
509	# no strict 'refs';
510	# @{"$pkg\::ISA"} = ext::;
511
512	register $base, $pkg;
513	}
514
515	sub unload_extension {
516	my ($pkg) = @_;
517
518	warn "removing extension $pkg\n";
519
520	# remove hooks
521	#TODO
522	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};
524	# }
525
526	# remove commands
527	for my $name (keys %command) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
529
530	if (@cb) {
531	$command{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};
536	}
537	}
538
539	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
541	delete $extcmd{$name};
542	}
543
544	if (my $cb = $pkg->can ("unload")) {
545	eval {
546	$cb->($pkg);
547	1
548	} or warn "$pkg unloaded, but with errors: $@";
549	}
550
551	Symbol::delete_package $pkg;
552	}
553
554	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;
559	eval {
560	load_extension $ext;
561	1
562	} or warn "$ext not loaded: $@";
563	}
564	}
565
566	sub _perl_reload(&) {
567	my ($msg) = @_;
568
569	$msg->("reloading...");
570
571	eval {
572	# 1. cancel all watchers
573	$_->cancel for Event::all_watchers;
574
575	# 2. unload all extensions
576	for (@exts) {
577	$msg->("unloading <$_>");
578	unload_extension $_;
579	}
580
581	# 3. unload all modules loaded from $LIBDIR
582	while (my ($k, $v) = each %INC) {
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
584
585	$msg->("removing <$k>");
586	delete $INC{$k};
587
588	$k =~ s/\.pm$//;
589	$k =~ s/\//::/g;
590
591	if (my $cb = $k->can ("unload_module")) {
592	$cb->();
593	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604
605	# 6. unload cf.pm "a bit"
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};
616	$msg->($@) if $@;
617
618	$msg->("reloaded");
619	};
620
621	sub perl_reload() {
622	_perl_reload {
623	warn $_[0];
624	print "$_[0]\n";
625	};
626	}
627
628	register_command "perl-reload", 0, sub {
629	my ($who, $arg) = @_;
630
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};	1391	}
		1392
		1393	cf::override;
636	}	1394	},
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {	1395	on_extcmd => sub {
645	my ($pl, $buf) = @_;	1396	my ($pl, $buf) = @_;
646		1397
647	my $msg = eval { from_json $buf };	1398	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
648		1399
649	if (ref $msg) {	1400	if (ref $msg) {
		1401	my ($type, $reply, @payload) =
		1402	"ARRAY" eq ref $msg
		1403	? @$msg
		1404	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1405
		1406	my @reply;
		1407
650	if (my $cb = $extcmd{$msg->{msgtype}}) {	1408	if (my $cb = $EXTCMD{$type}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {	1409	@reply = $cb->($pl, @payload);
652	$pl->ext_reply ($msg->{msgid}, %reply);	1410	}
		1411
		1412	$pl->ext_reply ($reply, @reply)
		1413	if $reply;
		1414
		1415	} else {
		1416	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1417	}
		1418
		1419	cf::override;
		1420	},
		1421	);
		1422
		1423	# "readahead" all extensions
		1424	sub cache_extensions {
		1425	my $grp = IO::AIO::aio_group;
		1426
		1427	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1428	for (grep /\.ext$/, @{$_[0]}) {
		1429	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1430	}
		1431	};
		1432
		1433	$grp
		1434	}
		1435
		1436	sub load_extensions {
		1437	info "loading extensions...";
		1438
		1439	cf::sync_job {
		1440	my %todo;
		1441
		1442	for my $path (<$LIBDIR/*.ext>) {
		1443	next unless -r $path;
		1444
		1445	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1446	my $base = $1;
		1447	my $pkg = $1;
		1448	$pkg =~ s/[^[:word:]]/_/g;
		1449	$pkg = "ext::$pkg";
		1450
		1451	open my $fh, "<:utf8", $path
		1452	or die "$path: $!";
		1453
		1454	my $source = do { local $/; <$fh> };
		1455
		1456	my %ext = (
		1457	path => $path,
		1458	base => $base,
		1459	pkg => $pkg,
		1460	);
		1461
		1462	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1463	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1464
		1465	$ext{source} =
		1466	"package $pkg; use common::sense;\n"
		1467	. "#line 1 \"$path\"\n{\n"
		1468	. $source
		1469	. "\n};\n1";
		1470
		1471	$todo{$base} = \%ext;
		1472	}
		1473
		1474	my $pass = 0;
		1475	my %done;
		1476	while (%todo) {
		1477	my $progress;
		1478
		1479	++$pass;
		1480
		1481	ext:
		1482	while (my ($k, $v) = each %todo) {
		1483	for (split /,\s*/, $v->{meta}{depends}) {
		1484	next ext
		1485	unless exists $done{$_};
		1486	}
		1487
		1488	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1489
		1490	my $active = eval $v->{source};
		1491
		1492	if (length $@) {
		1493	error "$v->{path}: $@\n";
		1494
		1495	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1496	if exists $v->{meta}{mandatory};
		1497
		1498	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1499	delete $todo{$k};
		1500	} else {
		1501	$done{$k} = delete $todo{$k};
		1502	push @EXTS, $v->{pkg};
		1503	$progress = 1;
		1504
		1505	info "$v->{base}: extension inactive.\n"
		1506	unless $active;
653	}	1507	}
654	}	1508	}
655	} else {	1509
656	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1510	unless ($progress) {
		1511	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1512
		1513	while (my ($k, $v) = each %todo) {
		1514	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1515	if exists $v->{meta}{mandatory};
		1516	}
657	}	1517	}
658		1518	}
659	cf::override;
660	},	1519	};
661	;	1520	}
662		1521
663	#############################################################################	1522	#############################################################################
664	# load/save/clean perl data associated with a map
665		1523
666	*cf::mapsupport::on_clean = sub {	1524	=back
		1525
		1526	=head2 CORE EXTENSIONS
		1527
		1528	Functions and methods that extend core deliantra objects.
		1529
		1530	=cut
		1531
		1532	package cf::player;
		1533
		1534	use Coro::AIO;
		1535
		1536	=head3 cf::player
		1537
		1538	=over 4
		1539
		1540	=item cf::player::num_playing
		1541
		1542	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1543
		1544	=cut
		1545
		1546	sub num_playing {
		1547	scalar grep
		1548	$_->ob->map
		1549	&& !$_->hidden
		1550	&& !$_->ob->flag (cf::FLAG_WIZ),
		1551	cf::player::list
		1552	}
		1553
		1554	=item cf::player::find $login
		1555
		1556	Returns the given player object, loading it if necessary (might block).
		1557
		1558	=cut
		1559
		1560	sub playerdir($) {
		1561	"$PLAYERDIR/"
		1562	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1563	}
		1564
		1565	sub path($) {
		1566	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1567
		1568	(playerdir $login) . "/playerdata"
		1569	}
		1570
		1571	sub find_active($) {
		1572	$cf::PLAYER{$_[0]}
		1573	and $cf::PLAYER{$_[0]}->active
		1574	and $cf::PLAYER{$_[0]}
		1575	}
		1576
		1577	sub exists($) {
667	my ($map) = @_;	1578	my ($login) = @_;
668		1579
669	my $path = $map->tmpname;	1580	$cf::PLAYER{$login}
670	defined $path or return;	1581	or !aio_stat path $login
671
672	unlink "$path.cfperl";
673	unlink "$path.pst";
674	};
675
676	*cf::mapsupport::on_swapin =
677	*cf::mapsupport::on_load = sub {
678	my ($map) = @_;
679
680	my $path = $map->tmpname;
681	$path = $map->path unless defined $path;
682
683	open my $fh, "<:raw", "$path.cfperl"
684	or return; # no perl data
685
686	my $data = Storable::thaw do { local $/; <$fh> };
687
688	$data->{version} <= 1
689	or return; # too new
690
691	$map->_set_obs ($data->{obs});
692	};
693
694	attach_to_maps prio => -10000, package => cf::mapsupport::;
695
696	#############################################################################
697	# load/save perl data associated with player->ob objects
698
699	sub all_objects(@) {
700	@_, map all_objects ($_->inv), @_
701	}	1582	}
702		1583
703	attach_to_players	1584	sub find($) {
		1585	return $cf::PLAYER{$_[0]} || do {
		1586	my $login = $_[0];
		1587
		1588	my $guard = cf::lock_acquire "user_find:$login";
		1589
		1590	$cf::PLAYER{$_[0]} || do {
		1591	# rename old playerfiles to new ones
		1592	#TODO: remove when no longer required
		1593	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1594	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1595	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1596	aio_unlink +(playerdir $login) . "/$login.pl";
		1597
		1598	my $f = new_from_file cf::object::thawer path $login
		1599	or return;
		1600
		1601	my $pl = cf::player::load_pl $f
		1602	or return;
		1603
		1604	local $cf::PLAYER_LOADING{$login} = $pl;
		1605	$f->resolve_delayed_derefs;
		1606	$cf::PLAYER{$login} = $pl
		1607	}
		1608	}
		1609	}
		1610
		1611	cf::player->attach (
704	on_load => sub {	1612	on_load => sub {
705	my ($pl, $path) = @_;	1613	my ($pl, $path) = @_;
706		1614
707	for my $o (all_objects $pl->ob) {	1615	# restore slots saved in save, below
708	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1616	my $slots = delete $pl->{_slots};
709	$o->set_ob_key_value ("_perl_data");
710		1617
711	%$o = %{ Storable::thaw pack "H*", $value };	1618	$pl->ob->current_weapon ($slots->[0]);
		1619	$pl->combat_ob ($slots->[1]);
		1620	$pl->ranged_ob ($slots->[2]);
		1621	},
		1622	);
		1623
		1624	sub save($) {
		1625	my ($pl) = @_;
		1626
		1627	return if $pl->{deny_save};
		1628
		1629	my $path = path $pl;
		1630	my $guard = cf::lock_acquire "user_save:$path";
		1631
		1632	return if $pl->{deny_save};
		1633
		1634	aio_mkdir playerdir $pl, 0770;
		1635	$pl->{last_save} = $cf::RUNTIME;
		1636
		1637	cf::get_slot 0.01;
		1638
		1639	# save slots, to be restored later
		1640	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1641
		1642	$pl->save_pl ($path);
		1643	cf::cede_to_tick;
		1644	}
		1645
		1646	sub new($) {
		1647	my ($login) = @_;
		1648
		1649	my $self = create;
		1650
		1651	$self->ob->name ($login);
		1652	$self->{deny_save} = 1;
		1653
		1654	$cf::PLAYER{$login} = $self;
		1655
		1656	$self
		1657	}
		1658
		1659	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1660
		1661	=cut
		1662
		1663	sub send_msg {
		1664	my $ns = shift->ns
		1665	or return;
		1666	$ns->send_msg (@_);
		1667	}
		1668
		1669	=item $pl->quit_character
		1670
		1671	Nukes the player without looking back. If logged in, the connection will
		1672	be destroyed. May block for a long time.
		1673
		1674	=cut
		1675
		1676	sub quit_character {
		1677	my ($pl) = @_;
		1678
		1679	my $name = $pl->ob->name;
		1680
		1681	$pl->{deny_save} = 1;
		1682	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1683
		1684	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1685	$pl->deactivate;
		1686
		1687	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1688	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1689	ext::highscore::check ($pl->ob);
		1690
		1691	$pl->ns->destroy if $pl->ns;
		1692
		1693	my $path = playerdir $pl;
		1694	my $temp = "$path~$cf::RUNTIME~deleting~";
		1695	aio_rename $path, $temp;
		1696	delete $cf::PLAYER{$pl->ob->name};
		1697	$pl->destroy;
		1698
		1699	my $prefix = qr<^~\Q$name\E/>;
		1700
		1701	# nuke player maps
		1702	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1703
		1704	IO::AIO::aio_rmtree $temp;
		1705	}
		1706
		1707	=item $pl->kick
		1708
		1709	Kicks a player out of the game. This destroys the connection.
		1710
		1711	=cut
		1712
		1713	sub kick {
		1714	my ($pl, $kicker) = @_;
		1715
		1716	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1717	$pl->killer ("kicked");
		1718	$pl->ns->destroy;
		1719	}
		1720
		1721	=item cf::player::list_logins
		1722
		1723	Returns am arrayref of all valid playernames in the system, can take a
		1724	while and may block, so not sync_job-capable, ever.
		1725
		1726	=cut
		1727
		1728	sub list_logins {
		1729	my $dirs = aio_readdir $PLAYERDIR
		1730	or return [];
		1731
		1732	my @logins;
		1733
		1734	for my $login (@$dirs) {
		1735	my $path = path $login;
		1736
		1737	# a .pst is a dead give-away for a valid player
		1738	# if no pst file found, open and chekc for blocked users
		1739	if (aio_stat "$path.pst") {
		1740	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1741	aio_read $fh, 0, 512, my $buf, 0 or next;
		1742	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1743	}
		1744
		1745	utf8::decode $login;
		1746	push @logins, $login;
		1747	}
		1748
		1749	\@logins
		1750	}
		1751
		1752	=item $player->maps
		1753
		1754	=item cf::player::maps $login
		1755
		1756	Returns an arrayref of map paths that are private for this
		1757	player. May block.
		1758
		1759	=cut
		1760
		1761	sub maps($) {
		1762	my ($pl) = @_;
		1763
		1764	$pl = ref $pl ? $pl->ob->name : $pl;
		1765
		1766	my $files = aio_readdir playerdir $pl
		1767	or return;
		1768
		1769	my @paths;
		1770
		1771	for (@$files) {
		1772	utf8::decode $_;
		1773	next if /\.(?:pl|pst)$/;
		1774	next unless /^$PATH_SEP/o;
		1775
		1776	push @paths, cf::map::normalise "~$pl/$_";
		1777	}
		1778
		1779	\@paths
		1780	}
		1781
		1782	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1783
		1784	Expand deliantra pod fragments into protocol xml.
		1785
		1786	=item $player->ext_reply ($msgid, @msg)
		1787
		1788	Sends an ext reply to the player.
		1789
		1790	=cut
		1791
		1792	sub ext_reply($$@) {
		1793	my ($self, $id, @msg) = @_;
		1794
		1795	$self->ns->ext_reply ($id, @msg)
		1796	}
		1797
		1798	=item $player->ext_msg ($type, @msg)
		1799
		1800	Sends an ext event to the client.
		1801
		1802	=cut
		1803
		1804	sub ext_msg($$@) {
		1805	my ($self, $type, @msg) = @_;
		1806
		1807	$self->ns->ext_msg ($type, @msg);
		1808	}
		1809
		1810	=head3 cf::region
		1811
		1812	=over 4
		1813
		1814	=cut
		1815
		1816	package cf::region;
		1817
		1818	=item cf::region::find_by_path $path
		1819
		1820	Tries to decuce the likely region for a map knowing only its path.
		1821
		1822	=cut
		1823
		1824	sub find_by_path($) {
		1825	my ($path) = @_;
		1826
		1827	$path =~ s/^~[^\/]*//; # skip ~login
		1828
		1829	my ($match, $specificity);
		1830
		1831	for my $region (list) {
		1832	if ($region->{match} && $path =~ $region->{match}) {
		1833	($match, $specificity) = ($region, $region->specificity)
		1834	if $region->specificity > $specificity;
		1835	}
		1836	}
		1837
		1838	$match
		1839	}
		1840
		1841	=back
		1842
		1843	=head3 cf::map
		1844
		1845	=over 4
		1846
		1847	=cut
		1848
		1849	package cf::map;
		1850
		1851	use Fcntl;
		1852	use Coro::AIO;
		1853
		1854	use overload
		1855	'""' => \&as_string,
		1856	fallback => 1;
		1857
		1858	our $MAX_RESET = 3600;
		1859	our $DEFAULT_RESET = 3000;
		1860
		1861	sub generate_random_map {
		1862	my ($self, $rmp) = @_;
		1863
		1864	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1865
		1866	$self->_create_random_map ($rmp);
		1867	}
		1868
		1869	=item cf::map->register ($regex, $prio)
		1870
		1871	Register a handler for the map path matching the given regex at the
		1872	givne priority (higher is better, built-in handlers have priority 0, the
		1873	default).
		1874
		1875	=cut
		1876
		1877	sub register {
		1878	my (undef, $regex, $prio) = @_;
		1879	my $pkg = caller;
		1880
		1881	push @{"$pkg\::ISA"}, __PACKAGE__;
		1882
		1883	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1884	}
		1885
		1886	# also paths starting with '/'
		1887	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1888
		1889	sub thawer_merge {
		1890	my ($self, $merge) = @_;
		1891
		1892	# we have to keep some variables in memory intact
		1893	local $self->{path};
		1894	local $self->{load_path};
		1895
		1896	$self->SUPER::thawer_merge ($merge);
		1897	}
		1898
		1899	sub normalise {
		1900	my ($path, $base) = @_;
		1901
		1902	$path = "$path"; # make sure it's a string
		1903
		1904	$path =~ s/\.map$//;
		1905
		1906	# map plan:
		1907	#
		1908	# /! non-realised random map exit (special hack!)
		1909	# {... are special paths that are not being touched
		1910	# ?xxx/... are special absolute paths
		1911	# ?random/... random maps
		1912	# /... normal maps
		1913	# ~user/... per-player map of a specific user
		1914
		1915	$path =~ s/$PATH_SEP/\//go;
		1916
		1917	# treat it as relative path if it starts with
		1918	# something that looks reasonable
		1919	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1920	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1921
		1922	$base =~ s{[^/]+/?$}{};
		1923	$path = "$base/$path";
		1924	}
		1925
		1926	for ($path) {
		1927	redo if s{/\.?/}{/};
		1928	redo if s{/[^/]+/\.\./}{/};
		1929	}
		1930
		1931	$path
		1932	}
		1933
		1934	sub new_from_path {
		1935	my (undef, $path, $base) = @_;
		1936
		1937	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1938
		1939	$path = normalise $path, $base;
		1940
		1941	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1942	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1943	my $self = bless cf::map::new, $pkg;
		1944	$self->{path} = $path; $self->path ($path);
		1945	$self->init; # pass $1 etc.
		1946	return $self;
		1947	}
		1948	}
		1949
		1950	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1951	()
		1952	}
		1953
		1954	sub init {
		1955	my ($self) = @_;
		1956
		1957	$self
		1958	}
		1959
		1960	sub as_string {
		1961	my ($self) = @_;
		1962
		1963	"$self->{path}"
		1964	}
		1965
		1966	# the displayed name, this is a one way mapping
		1967	sub visible_name {
		1968	&as_string
		1969	}
		1970
		1971	# the original (read-only) location
		1972	sub load_path {
		1973	my ($self) = @_;
		1974
		1975	"$MAPDIR/$self->{path}.map"
		1976	}
		1977
		1978	# the temporary/swap location
		1979	sub save_path {
		1980	my ($self) = @_;
		1981
		1982	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1983	"$TMPDIR/$path.map"
		1984	}
		1985
		1986	# the unique path, undef == no special unique path
		1987	sub uniq_path {
		1988	my ($self) = @_;
		1989
		1990	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1991	"$UNIQUEDIR/$path"
		1992	}
		1993
		1994	sub decay_objects {
		1995	my ($self) = @_;
		1996
		1997	return if $self->{deny_reset};
		1998
		1999	$self->do_decay_objects;
		2000	}
		2001
		2002	sub unlink_save {
		2003	my ($self) = @_;
		2004
		2005	utf8::encode (my $save = $self->save_path);
		2006	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2007	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2008	}
		2009
		2010	sub load_header_from($) {
		2011	my ($self, $path) = @_;
		2012
		2013	utf8::encode $path;
		2014	my $f = new_from_file cf::object::thawer $path
		2015	or return;
		2016
		2017	$self->_load_header ($f)
		2018	or return;
		2019
		2020	local $MAP_LOADING{$self->{path}} = $self;
		2021	$f->resolve_delayed_derefs;
		2022
		2023	$self->{load_path} = $path;
		2024
		2025	1
		2026	}
		2027
		2028	sub load_header_orig {
		2029	my ($self) = @_;
		2030
		2031	$self->load_header_from ($self->load_path)
		2032	}
		2033
		2034	sub load_header_temp {
		2035	my ($self) = @_;
		2036
		2037	$self->load_header_from ($self->save_path)
		2038	}
		2039
		2040	sub prepare_temp {
		2041	my ($self) = @_;
		2042
		2043	$self->last_access ((delete $self->{last_access})
		2044	|| $cf::RUNTIME); #d#
		2045	# safety
		2046	$self->{instantiate_time} = $cf::RUNTIME
		2047	if $self->{instantiate_time} > $cf::RUNTIME;
		2048	}
		2049
		2050	sub prepare_orig {
		2051	my ($self) = @_;
		2052
		2053	$self->{load_original} = 1;
		2054	$self->{instantiate_time} = $cf::RUNTIME;
		2055	$self->last_access ($cf::RUNTIME);
		2056	$self->instantiate;
		2057	}
		2058
		2059	sub load_header {
		2060	my ($self) = @_;
		2061
		2062	if ($self->load_header_temp) {
		2063	$self->prepare_temp;
		2064	} else {
		2065	$self->load_header_orig
		2066	or return;
		2067	$self->prepare_orig;
		2068	}
		2069
		2070	$self->{deny_reset} = 1
		2071	if $self->no_reset;
		2072
		2073	$self->default_region (cf::region::find_by_path $self->{path})
		2074	unless $self->default_region;
		2075
		2076	1
		2077	}
		2078
		2079	sub find;
		2080	sub find {
		2081	my ($path, $origin) = @_;
		2082
		2083	cf::cede_to_tick;
		2084
		2085	$path = normalise $path, $origin && $origin->path;
		2086
		2087	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2088	my $guard2 = cf::lock_acquire "map_find:$path";
		2089
		2090	$cf::MAP{$path} || do {
		2091	my $map = new_from_path cf::map $path
		2092	or return;
		2093
		2094	$map->{last_save} = $cf::RUNTIME;
		2095
		2096	$map->load_header
		2097	or return;
		2098
		2099	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2100	# doing this can freeze the server in a sync job, obviously
		2101	#$cf::WAIT_FOR_TICK->wait;
		2102	undef $guard2;
		2103	undef $guard1;
		2104	$map->reset;
		2105	return find $path;
		2106	}
		2107
		2108	$cf::MAP{$path} = $map
		2109	}
		2110	}
		2111
		2112	sub pre_load { }
		2113	#sub post_load { } # XS
		2114
		2115	sub load {
		2116	my ($self) = @_;
		2117
		2118	local $self->{deny_reset} = 1; # loading can take a long time
		2119
		2120	my $path = $self->{path};
		2121
		2122	{
		2123	my $guard = cf::lock_acquire "map_data:$path";
		2124
		2125	return unless $self->valid;
		2126	return unless $self->in_memory == cf::MAP_SWAPPED;
		2127
		2128	$self->in_memory (cf::MAP_LOADING);
		2129
		2130	$self->alloc;
		2131
		2132	$self->pre_load;
		2133	cf::cede_to_tick;
		2134
		2135	my $f = new_from_file cf::object::thawer $self->{load_path};
		2136	$f->skip_block;
		2137	$self->_load_objects ($f)
		2138	or return;
		2139
		2140	$self->post_load_original
		2141	if delete $self->{load_original};
		2142
		2143	if (my $uniq = $self->uniq_path) {
		2144	utf8::encode $uniq;
		2145	unless (aio_stat $uniq) {
		2146	if (my $f = new_from_file cf::object::thawer $uniq) {
		2147	$self->clear_unique_items;
		2148	$self->_load_objects ($f);
		2149	$f->resolve_delayed_derefs;
		2150	}
712	}	2151	}
713	}	2152	}
		2153
		2154	$f->resolve_delayed_derefs;
		2155
		2156	cf::cede_to_tick;
		2157	# now do the right thing for maps
		2158	$self->link_multipart_objects;
		2159	$self->difficulty ($self->estimate_difficulty)
		2160	unless $self->difficulty;
		2161	cf::cede_to_tick;
		2162
		2163	unless ($self->{deny_activate}) {
		2164	$self->decay_objects;
		2165	$self->fix_auto_apply;
		2166	$self->update_buttons;
		2167	cf::cede_to_tick;
		2168	$self->activate;
		2169	}
		2170
		2171	$self->{last_save} = $cf::RUNTIME;
		2172	$self->last_access ($cf::RUNTIME);
		2173
		2174	$self->in_memory (cf::MAP_ACTIVE);
714	},	2175	}
715	;
716		2176
717	#############################################################################	2177	$self->post_load;
718	# core extensions - in perl
719		2178
720	=item cf::player::exists $login	2179	1
721
722	Returns true when the given account exists.
723
724	=cut
725
726	sub cf::player::exists($) {
727	cf::player::find $_[0]
728	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
729	}	2180	}
730		2181
		2182	# customize the map for a given player, i.e.
		2183	# return the _real_ map. used by e.g. per-player
		2184	# maps to change the path to ~playername/mappath
		2185	sub customise_for {
		2186	my ($self, $ob) = @_;
		2187
		2188	return find "~" . $ob->name . "/" . $self->{path}
		2189	if $self->per_player;
		2190
		2191	# return find "?party/" . $ob->name . "/" . $self->{path}
		2192	# if $self->per_party;
		2193
		2194	$self
		2195	}
		2196
		2197	# find and load all maps in the 3x3 area around a map
		2198	sub load_neighbours {
		2199	my ($map) = @_;
		2200
		2201	my @neigh; # diagonal neighbours
		2202
		2203	for (0 .. 3) {
		2204	my $neigh = $map->tile_path ($_)
		2205	or next;
		2206	$neigh = find $neigh, $map
		2207	or next;
		2208	$neigh->load;
		2209
		2210	# now find the diagonal neighbours
		2211	push @neigh,
		2212	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2213	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2214	}
		2215
		2216	for (grep defined $_->[0], @neigh) {
		2217	my ($path, $origin) = @$_;
		2218	my $neigh = find $path, $origin
		2219	or next;
		2220	$neigh->load;
		2221	}
		2222	}
		2223
		2224	sub find_sync {
		2225	my ($path, $origin) = @_;
		2226
		2227	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2228	if $Coro::current == $Coro::main;
		2229
		2230	find $path, $origin
		2231	}
		2232
		2233	sub do_load_sync {
		2234	my ($map) = @_;
		2235
		2236	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2237	if $Coro::current == $Coro::main;
		2238
		2239	$map->load;
		2240	}
		2241
		2242	our %MAP_PREFETCH;
		2243	our $MAP_PREFETCHER = undef;
		2244
		2245	sub find_async {
		2246	my ($path, $origin, $load) = @_;
		2247
		2248	$path = normalise $path, $origin && $origin->{path};
		2249
		2250	if (my $map = $cf::MAP{$path}) {
		2251	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2252	}
		2253
		2254	$MAP_PREFETCH{$path} |= $load;
		2255
		2256	$MAP_PREFETCHER ||= cf::async {
		2257	$Coro::current->{desc} = "map prefetcher";
		2258
		2259	while (%MAP_PREFETCH) {
		2260	while (my ($k, $v) = each %MAP_PREFETCH) {
		2261	if (my $map = find $k) {
		2262	$map->load if $v;
		2263	}
		2264
		2265	delete $MAP_PREFETCH{$k};
		2266	}
		2267	}
		2268	undef $MAP_PREFETCHER;
		2269	};
		2270	$MAP_PREFETCHER->prio (6);
		2271
		2272	()
		2273	}
		2274
		2275	# common code, used by both ->save and ->swapout
		2276	sub _save {
		2277	my ($self) = @_;
		2278
		2279	$self->{last_save} = $cf::RUNTIME;
		2280
		2281	return unless $self->dirty;
		2282
		2283	my $save = $self->save_path; utf8::encode $save;
		2284	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2285
		2286	$self->{load_path} = $save;
		2287
		2288	return if $self->{deny_save};
		2289
		2290	local $self->{last_access} = $self->last_access;#d#
		2291
		2292	cf::async {
		2293	$Coro::current->{desc} = "map player save";
		2294	$_->contr->save for $self->players;
		2295	};
		2296
		2297	cf::get_slot 0.02;
		2298
		2299	if ($uniq) {
		2300	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2301	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2302	} else {
		2303	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2304	}
		2305	}
		2306
		2307	sub save {
		2308	my ($self) = @_;
		2309
		2310	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2311
		2312	$self->_save;
		2313	}
		2314
		2315	sub swap_out {
		2316	my ($self) = @_;
		2317
		2318	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2319
		2320	return if $self->in_memory != cf::MAP_ACTIVE;
		2321	return if $self->{deny_save};
		2322	return if $self->players;
		2323
		2324	# first deactivate the map and "unlink" it from the core
		2325	$self->deactivate;
		2326	$_->clear_links_to ($self) for values %cf::MAP;
		2327	$self->in_memory (cf::MAP_SWAPPED);
		2328
		2329	# then atomically save
		2330	$self->_save;
		2331
		2332	# then free the map
		2333	$self->clear;
		2334	}
		2335
		2336	sub reset_at {
		2337	my ($self) = @_;
		2338
		2339	# TODO: safety, remove and allow resettable per-player maps
		2340	return 1e99 if $self->{deny_reset};
		2341
		2342	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2343	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2344
		2345	$time + $to
		2346	}
		2347
		2348	sub should_reset {
		2349	my ($self) = @_;
		2350
		2351	$self->reset_at <= $cf::RUNTIME
		2352	}
		2353
		2354	sub reset {
		2355	my ($self) = @_;
		2356
		2357	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2358
		2359	return if $self->players;
		2360
		2361	cf::trace "resetting map ", $self->path, "\n";
		2362
		2363	$self->in_memory (cf::MAP_SWAPPED);
		2364
		2365	# need to save uniques path
		2366	unless ($self->{deny_save}) {
		2367	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2368
		2369	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2370	if $uniq;
		2371	}
		2372
		2373	delete $cf::MAP{$self->path};
		2374
		2375	$self->deactivate;
		2376	$_->clear_links_to ($self) for values %cf::MAP;
		2377	$self->clear;
		2378
		2379	$self->unlink_save;
		2380	$self->destroy;
		2381	}
		2382
		2383	my $nuke_counter = "aaaa";
		2384
		2385	sub nuke {
		2386	my ($self) = @_;
		2387
		2388	{
		2389	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2390
		2391	delete $cf::MAP{$self->path};
		2392
		2393	$self->unlink_save;
		2394
		2395	bless $self, "cf::map::wrap";
		2396	delete $self->{deny_reset};
		2397	$self->{deny_save} = 1;
		2398	$self->reset_timeout (1);
		2399	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2400
		2401	$cf::MAP{$self->path} = $self;
		2402	}
		2403
		2404	$self->reset; # polite request, might not happen
		2405	}
		2406
		2407	=item $maps = cf::map::tmp_maps
		2408
		2409	Returns an arrayref with all map paths of currently instantiated and saved
		2410	maps. May block.
		2411
		2412	=cut
		2413
		2414	sub tmp_maps() {
		2415	[
		2416	map {
		2417	utf8::decode $_;
		2418	/\.map$/
		2419	? normalise $_
		2420	: ()
		2421	} @{ aio_readdir $TMPDIR or [] }
		2422	]
		2423	}
		2424
		2425	=item $maps = cf::map::random_maps
		2426
		2427	Returns an arrayref with all map paths of currently instantiated and saved
		2428	random maps. May block.
		2429
		2430	=cut
		2431
		2432	sub random_maps() {
		2433	[
		2434	map {
		2435	utf8::decode $_;
		2436	/\.map$/
		2437	? normalise "?random/$_"
		2438	: ()
		2439	} @{ aio_readdir $RANDOMDIR or [] }
		2440	]
		2441	}
		2442
		2443	=item cf::map::unique_maps
		2444
		2445	Returns an arrayref of paths of all shared maps that have
		2446	instantiated unique items. May block.
		2447
		2448	=cut
		2449
		2450	sub unique_maps() {
		2451	[
		2452	map {
		2453	utf8::decode $_;
		2454	s/\.map$//; # TODO future compatibility hack
		2455	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2456	? ()
		2457	: normalise $_
		2458	} @{ aio_readdir $UNIQUEDIR or [] }
		2459	]
		2460	}
		2461
		2462	=item cf::map::static_maps
		2463
		2464	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2465	file in the shared directory excluding F</styles> and F</editor>). May
		2466	block.
		2467
		2468	=cut
		2469
		2470	sub static_maps() {
		2471	my @dirs = "";
		2472	my @maps;
		2473
		2474	while (@dirs) {
		2475	my $dir = shift @dirs;
		2476
		2477	next if $dir eq "/styles" || $dir eq "/editor";
		2478
		2479	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2480	or return;
		2481
		2482	for (@$files) {
		2483	s/\.map$// or next;
		2484	utf8::decode $_;
		2485	push @maps, "$dir/$_";
		2486	}
		2487
		2488	push @dirs, map "$dir/$_", @$dirs;
		2489	}
		2490
		2491	\@maps
		2492	}
		2493
		2494	=back
		2495
		2496	=head3 cf::object
		2497
		2498	=cut
		2499
		2500	package cf::object;
		2501
		2502	=over 4
		2503
		2504	=item $ob->inv_recursive
		2505
		2506	Returns the inventory of the object I<and> their inventories, recursively,
		2507	but I<not> the object itself.
		2508
		2509	=cut
		2510
		2511	sub inv_recursive_;
		2512	sub inv_recursive_ {
		2513	map { $_, inv_recursive_ $_->inv } @_
		2514	}
		2515
		2516	sub inv_recursive {
		2517	inv_recursive_ inv $_[0]
		2518	}
		2519
		2520	=item $ref = $ob->ref
		2521
		2522	Creates and returns a persistent reference to an object that can be stored as a string.
		2523
		2524	=item $ob = cf::object::deref ($refstring)
		2525
		2526	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2527	even if the object actually exists. May block.
		2528
		2529	=cut
		2530
		2531	sub deref {
		2532	my ($ref) = @_;
		2533
		2534	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2535	my ($uuid, $name) = ($1, $2);
		2536	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2537	or return;
		2538	$pl->ob->uuid eq $uuid
		2539	or return;
		2540
		2541	$pl->ob
		2542	} else {
		2543	warn "$ref: cannot resolve object reference\n";
		2544	undef
		2545	}
		2546	}
		2547
		2548	package cf;
		2549
		2550	=back
		2551
		2552	=head3 cf::object::player
		2553
		2554	=over 4
		2555
731	=item $player->reply ($npc, $msg[, $flags])	2556	=item $player_object->reply ($npc, $msg[, $flags])
732		2557
733	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2558	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
734	can be C<undef>. Does the right thing when the player is currently in a	2559	can be C<undef>. Does the right thing when the player is currently in a
735	dialogue with the given NPC character.	2560	dialogue with the given NPC character.
736		2561
737	=cut	2562	=cut
738		2563
		2564	our $SAY_CHANNEL = {
		2565	id => "say",
		2566	title => "Map",
		2567	reply => "say ",
		2568	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2569	};
		2570
		2571	our $CHAT_CHANNEL = {
		2572	id => "chat",
		2573	title => "Chat",
		2574	reply => "chat ",
		2575	tooltip => "Player chat and shouts, global to the server.",
		2576	};
		2577
739	# rough implementation of a future "reply" method that works	2578	# rough implementation of a future "reply" method that works
740	# with dialog boxes.	2579	# with dialog boxes.
		2580	#TODO: the first argument must go, split into a $npc->reply_to ( method
741	sub cf::object::player::reply($$$;$) {	2581	sub cf::object::player::reply($$$;$) {
742	my ($self, $npc, $msg, $flags) = @_;	2582	my ($self, $npc, $msg, $flags) = @_;
743		2583
744	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2584	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
745		2585
746	if ($self->{record_replies}) {	2586	if ($self->{record_replies}) {
747	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2587	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2588
748	} else {	2589	} else {
		2590	my $pl = $self->contr;
		2591
		2592	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2593	my $dialog = $pl->{npc_dialog};
		2594	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2595
		2596	} else {
749	$msg = $npc->name . " says: $msg" if $npc;	2597	$msg = $npc->name . " says: $msg" if $npc;
750	$self->message ($msg, $flags);	2598	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2599	}
		2600	}
		2601	}
		2602
		2603	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2604
		2605	=cut
		2606
		2607	sub cf::object::send_msg {
		2608	my $pl = shift->contr
		2609	or return;
		2610	$pl->send_msg (@_);
		2611	}
		2612
		2613	=item $player_object->may ("access")
		2614
		2615	Returns wether the given player is authorized to access resource "access"
		2616	(e.g. "command_wizcast").
		2617
		2618	=cut
		2619
		2620	sub cf::object::player::may {
		2621	my ($self, $access) = @_;
		2622
		2623	$self->flag (cf::FLAG_WIZ) ||
		2624	(ref $cf::CFG{"may_$access"}
		2625	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2626	: $cf::CFG{"may_$access"})
		2627	}
		2628
		2629	=item $player_object->enter_link
		2630
		2631	Freezes the player and moves him/her to a special map (C<{link}>).
		2632
		2633	The player should be reasonably safe there for short amounts of time (e.g.
		2634	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2635	though, as the player cannot control the character while it is on the link
		2636	map.
		2637
		2638	Will never block.
		2639
		2640	=item $player_object->leave_link ($map, $x, $y)
		2641
		2642	Moves the player out of the special C<{link}> map onto the specified
		2643	map. If the map is not valid (or omitted), the player will be moved back
		2644	to the location he/she was before the call to C<enter_link>, or, if that
		2645	fails, to the emergency map position.
		2646
		2647	Might block.
		2648
		2649	=cut
		2650
		2651	sub link_map {
		2652	unless ($LINK_MAP) {
		2653	$LINK_MAP = cf::map::find "{link}"
		2654	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2655	$LINK_MAP->load;
		2656	}
		2657
		2658	$LINK_MAP
		2659	}
		2660
		2661	sub cf::object::player::enter_link {
		2662	my ($self) = @_;
		2663
		2664	$self->deactivate_recursive;
		2665
		2666	++$self->{_link_recursion};
		2667
		2668	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2669
		2670	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2671	if $self->map && $self->map->{path} ne "{link}";
		2672
		2673	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2674	}
		2675
		2676	sub cf::object::player::leave_link {
		2677	my ($self, $map, $x, $y) = @_;
		2678
		2679	return unless $self->contr->active;
		2680
		2681	my $link_pos = delete $self->{_link_pos};
		2682
		2683	unless ($map) {
		2684	# restore original map position
		2685	($map, $x, $y) = @{ $link_pos || [] };
		2686	$map = cf::map::find $map;
		2687
		2688	unless ($map) {
		2689	($map, $x, $y) = @$EMERGENCY_POSITION;
		2690	$map = cf::map::find $map
		2691	or die "FATAL: cannot load emergency map\n";
		2692	}
		2693	}
		2694
		2695	($x, $y) = (-1, -1)
		2696	unless (defined $x) && (defined $y);
		2697
		2698	# use -1 or undef as default coordinates, not 0, 0
		2699	($x, $y) = ($map->enter_x, $map->enter_y)
		2700	if $x <= 0 && $y <= 0;
		2701
		2702	$map->load;
		2703	$map->load_neighbours;
		2704
		2705	return unless $self->contr->active;
		2706
		2707	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2708	if ($self->enter_map ($map, $x, $y)) {
		2709	# entering was successful
		2710	delete $self->{_link_recursion};
		2711	# only activate afterwards, to support waiting in hooks
		2712	$self->activate_recursive;
		2713	}
		2714
		2715	}
		2716
		2717	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2718
		2719	Moves the player to the given map-path and coordinates by first freezing
		2720	her, loading and preparing them map, calling the provided $check callback
		2721	that has to return the map if sucecssful, and then unfreezes the player on
		2722	the new (success) or old (failed) map position. In either case, $done will
		2723	be called at the end of this process.
		2724
		2725	Note that $check will be called with a potentially non-loaded map, so if
		2726	it needs a loaded map it has to call C<< ->load >>.
		2727
		2728	=cut
		2729
		2730	our $GOTOGEN;
		2731
		2732	sub cf::object::player::goto {
		2733	my ($self, $path, $x, $y, $check, $done) = @_;
		2734
		2735	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2736	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2737	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2738	($path, $x, $y) = @$EMERGENCY_POSITION;
		2739	}
		2740
		2741	# do generation counting so two concurrent goto's will be executed in-order
		2742	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2743
		2744	$self->enter_link;
		2745
		2746	(async {
		2747	$Coro::current->{desc} = "player::goto $path $x $y";
		2748
		2749	# *tag paths override both path and x|y
		2750	if ($path =~ /^\*(.*)$/) {
		2751	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2752	my $ob = $obs[rand @obs];
		2753
		2754	# see if we actually can go there
		2755	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2756	$ob = $obs[rand @obs];
		2757	} else {
		2758	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2759	}
		2760	# else put us there anyways for now #d#
		2761
		2762	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2763	} else {
		2764	($path, $x, $y) = (undef, undef, undef);
		2765	}
		2766	}
		2767
		2768	my $map = eval {
		2769	my $map = defined $path ? cf::map::find $path : undef;
		2770
		2771	if ($map) {
		2772	$map = $map->customise_for ($self);
		2773	$map = $check->($map, $x, $y, $self) if $check && $map;
		2774	} else {
		2775	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2776	}
		2777
		2778	$map
		2779	};
		2780
		2781	if ($@) {
		2782	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2783	LOG llevError | logBacktrace, Carp::longmess $@;
		2784	}
		2785
		2786	if ($gen == $self->{_goto_generation}) {
		2787	delete $self->{_goto_generation};
		2788	$self->leave_link ($map, $x, $y);
		2789	}
		2790
		2791	$done->($self) if $done;
		2792	})->prio (1);
		2793	}
		2794
		2795	=item $player_object->enter_exit ($exit_object)
		2796
		2797	=cut
		2798
		2799	sub parse_random_map_params {
		2800	my ($spec) = @_;
		2801
		2802	my $rmp = { # defaults
		2803	xsize => (cf::rndm 15, 40),
		2804	ysize => (cf::rndm 15, 40),
		2805	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2806	#layout => string,
751	}	2807	};
752	}
753		2808
		2809	for (split /\n/, $spec) {
		2810	my ($k, $v) = split /\s+/, $_, 2;
		2811
		2812	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2813	}
		2814
		2815	$rmp
		2816	}
		2817
		2818	sub prepare_random_map {
		2819	my ($exit) = @_;
		2820
		2821	# all this does is basically replace the /! path by
		2822	# a new random map path (?random/...) with a seed
		2823	# that depends on the exit object
		2824
		2825	my $rmp = parse_random_map_params $exit->msg;
		2826
		2827	if ($exit->map) {
		2828	$rmp->{region} = $exit->region->name;
		2829	$rmp->{origin_map} = $exit->map->path;
		2830	$rmp->{origin_x} = $exit->x;
		2831	$rmp->{origin_y} = $exit->y;
		2832
		2833	$exit->map->touch;
		2834	}
		2835
		2836	$rmp->{random_seed} ||= $exit->random_seed;
		2837
		2838	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2839	my $md5 = Digest::MD5::md5_hex $data;
		2840	my $meta = "$RANDOMDIR/$md5.meta";
		2841
		2842	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2843	aio_write $fh, 0, (length $data), $data, 0;
		2844	undef $fh;
		2845	aio_rename "$meta~", $meta;
		2846
		2847	my $slaying = "?random/$md5";
		2848
		2849	if ($exit->valid) {
		2850	$exit->slaying ("?random/$md5");
		2851	$exit->msg (undef);
		2852	}
		2853	}
		2854	}
		2855
		2856	sub cf::object::player::enter_exit {
		2857	my ($self, $exit) = @_;
		2858
		2859	return unless $self->type == cf::PLAYER;
		2860
		2861	$self->enter_link;
		2862
		2863	(async {
		2864	$Coro::current->{desc} = "enter_exit";
		2865
		2866	unless (eval {
		2867	$self->deactivate_recursive; # just to be sure
		2868
		2869	# random map handling
		2870	{
		2871	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2872
		2873	prepare_random_map $exit
		2874	if $exit->slaying eq "/!";
		2875	}
		2876
		2877	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2878	my $x = $exit->stats->hp;
		2879	my $y = $exit->stats->sp;
		2880
		2881	$self->goto ($map, $x, $y);
		2882
		2883	# if exit is damned, update players death & WoR home-position
		2884	$self->contr->savebed ($map, $x, $y)
		2885	if $exit->flag (cf::FLAG_DAMNED);
		2886
		2887	1
		2888	}) {
		2889	$self->message ("Something went wrong deep within the deliantra server. "
		2890	. "I'll try to bring you back to the map you were before. "
		2891	. "Please report this to the dungeon master!",
		2892	cf::NDI_UNIQUE | cf::NDI_RED);
		2893
		2894	error "ERROR in enter_exit: $@";
		2895	$self->leave_link;
		2896	}
		2897	})->prio (1);
		2898	}
		2899
		2900	=head3 cf::client
		2901
		2902	=over 4
		2903
		2904	=item $client->send_drawinfo ($text, $flags)
		2905
		2906	Sends a drawinfo packet to the client. Circumvents output buffering so
		2907	should not be used under normal circumstances.
		2908
		2909	=cut
		2910
		2911	sub cf::client::send_drawinfo {
		2912	my ($self, $text, $flags) = @_;
		2913
		2914	utf8::encode $text;
		2915	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2916	}
		2917
		2918	=item $client->send_big_packet ($pkt)
		2919
		2920	Like C<send_packet>, but tries to compress large packets, and fragments
		2921	them as required.
		2922
		2923	=cut
		2924
		2925	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2926
		2927	sub cf::client::send_big_packet {
		2928	my ($self, $pkt) = @_;
		2929
		2930	# try lzf for large packets
		2931	$pkt = "lzf " . Compress::LZF::compress $pkt
		2932	if 1024 <= length $pkt and $self->{can_lzf};
		2933
		2934	# split very large packets
		2935	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2936	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2937	$pkt = "frag";
		2938	}
		2939
		2940	$self->send_packet ($pkt);
		2941	}
		2942
		2943	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2944
		2945	Send a drawinfo or msg packet to the client, formatting the msg for the
		2946	client if neccessary. C<$type> should be a string identifying the type of
		2947	the message, with C<log> being the default. If C<$color> is negative, suppress
		2948	the message unless the client supports the msg packet.
		2949
		2950	=cut
		2951
		2952	# non-persistent channels (usually the info channel)
		2953	our %CHANNEL = (
		2954	"c/motd" => {
		2955	id => "infobox",
		2956	title => "MOTD",
		2957	reply => undef,
		2958	tooltip => "The message of the day",
		2959	},
		2960	"c/identify" => {
		2961	id => "infobox",
		2962	title => "Identify",
		2963	reply => undef,
		2964	tooltip => "Items recently identified",
		2965	},
		2966	"c/examine" => {
		2967	id => "infobox",
		2968	title => "Examine",
		2969	reply => undef,
		2970	tooltip => "Signs and other items you examined",
		2971	},
		2972	"c/shopinfo" => {
		2973	id => "infobox",
		2974	title => "Shop Info",
		2975	reply => undef,
		2976	tooltip => "What your bargaining skill tells you about the shop",
		2977	},
		2978	"c/book" => {
		2979	id => "infobox",
		2980	title => "Book",
		2981	reply => undef,
		2982	tooltip => "The contents of a note or book",
		2983	},
		2984	"c/lookat" => {
		2985	id => "infobox",
		2986	title => "Look",
		2987	reply => undef,
		2988	tooltip => "What you saw there",
		2989	},
		2990	"c/who" => {
		2991	id => "infobox",
		2992	title => "Players",
		2993	reply => undef,
		2994	tooltip => "Shows players who are currently online",
		2995	},
		2996	"c/body" => {
		2997	id => "infobox",
		2998	title => "Body Parts",
		2999	reply => undef,
		3000	tooltip => "Shows which body parts you posess and are available",
		3001	},
		3002	"c/statistics" => {
		3003	id => "infobox",
		3004	title => "Statistics",
		3005	reply => undef,
		3006	tooltip => "Shows your primary statistics",
		3007	},
		3008	"c/skills" => {
		3009	id => "infobox",
		3010	title => "Skills",
		3011	reply => undef,
		3012	tooltip => "Shows your experience per skill and item power",
		3013	},
		3014	"c/shopitems" => {
		3015	id => "infobox",
		3016	title => "Shop Items",
		3017	reply => undef,
		3018	tooltip => "Shows the items currently for sale in this shop",
		3019	},
		3020	"c/resistances" => {
		3021	id => "infobox",
		3022	title => "Resistances",
		3023	reply => undef,
		3024	tooltip => "Shows your resistances",
		3025	},
		3026	"c/pets" => {
		3027	id => "infobox",
		3028	title => "Pets",
		3029	reply => undef,
		3030	tooltip => "Shows information abotu your pets/a specific pet",
		3031	},
		3032	"c/perceiveself" => {
		3033	id => "infobox",
		3034	title => "Perceive Self",
		3035	reply => undef,
		3036	tooltip => "You gained detailed knowledge about yourself",
		3037	},
		3038	"c/uptime" => {
		3039	id => "infobox",
		3040	title => "Uptime",
		3041	reply => undef,
		3042	tooltip => "How long the server has been running since last restart",
		3043	},
		3044	"c/mapinfo" => {
		3045	id => "infobox",
		3046	title => "Map Info",
		3047	reply => undef,
		3048	tooltip => "Information related to the maps",
		3049	},
		3050	"c/party" => {
		3051	id => "party",
		3052	title => "Party",
		3053	reply => "gsay ",
		3054	tooltip => "Messages and chat related to your party",
		3055	},
		3056	"c/death" => {
		3057	id => "death",
		3058	title => "Death",
		3059	reply => undef,
		3060	tooltip => "Reason for and more info about your most recent death",
		3061	},
		3062	"c/say" => $SAY_CHANNEL,
		3063	"c/chat" => $CHAT_CHANNEL,
		3064	);
		3065
		3066	sub cf::client::send_msg {
		3067	my ($self, $channel, $msg, $color, @extra) = @_;
		3068
		3069	$msg = $self->pl->expand_cfpod ($msg)
		3070	unless $color & cf::NDI_VERBATIM;
		3071
		3072	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3073
		3074	# check predefined channels, for the benefit of C
		3075	if ($CHANNEL{$channel}) {
		3076	$channel = $CHANNEL{$channel};
		3077
		3078	$self->ext_msg (channel_info => $channel);
		3079	$channel = $channel->{id};
		3080
		3081	} elsif (ref $channel) {
		3082	# send meta info to client, if not yet sent
		3083	unless (exists $self->{channel}{$channel->{id}}) {
		3084	$self->{channel}{$channel->{id}} = $channel;
		3085	$self->ext_msg (channel_info => $channel);
		3086	}
		3087
		3088	$channel = $channel->{id};
		3089	}
		3090
		3091	return unless @extra || length $msg;
		3092
		3093	# default colour, mask it out
		3094	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3095	if $color & cf::NDI_DEF;
		3096
		3097	my $pkt = "msg "
		3098	. $self->{json_coder}->encode (
		3099	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3100	);
		3101
		3102	$self->send_big_packet ($pkt);
		3103	}
		3104
		3105	=item $client->ext_msg ($type, @msg)
		3106
		3107	Sends an ext event to the client.
		3108
		3109	=cut
		3110
		3111	sub cf::client::ext_msg($$@) {
		3112	my ($self, $type, @msg) = @_;
		3113
		3114	if ($self->extcmd == 2) {
		3115	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3116	} elsif ($self->extcmd == 1) { # TODO: remove
		3117	push @msg, msgtype => "event_$type";
		3118	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3119	}
		3120	}
		3121
754	=item $player->ext_reply ($msgid, $msgtype, %msg)	3122	=item $client->ext_reply ($msgid, @msg)
755		3123
756	Sends an ext reply to the player.	3124	Sends an ext reply to the client.
757		3125
758	=cut	3126	=cut
759		3127
760	sub cf::player::ext_reply($$$%) {	3128	sub cf::client::ext_reply($$@) {
761	my ($self, $id, %msg) = @_;	3129	my ($self, $id, @msg) = @_;
762		3130
763	$msg{msgid} = $id;	3131	if ($self->extcmd == 2) {
764		3132	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
765	$self->send ("ext " . to_json \%msg);	3133	} elsif ($self->extcmd == 1) {
		3134	#TODO: version 1, remove
		3135	unshift @msg, msgtype => "reply", msgid => $id;
		3136	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3137	}
766	}	3138	}
767		3139
768	#############################################################################	3140	=item $success = $client->query ($flags, "text", \&cb)
769	# map scripting support	3141
		3142	Queues a query to the client, calling the given callback with
		3143	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3144	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3145
		3146	Queries can fail, so check the return code. Or don't, as queries will
		3147	become reliable at some point in the future.
		3148
		3149	=cut
		3150
		3151	sub cf::client::query {
		3152	my ($self, $flags, $text, $cb) = @_;
		3153
		3154	return unless $self->state == ST_PLAYING
		3155	|| $self->state == ST_SETUP
		3156	|| $self->state == ST_CUSTOM;
		3157
		3158	$self->state (ST_CUSTOM);
		3159
		3160	utf8::encode $text;
		3161	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3162
		3163	$self->send_packet ($self->{query_queue}[0][0])
		3164	if @{ $self->{query_queue} } == 1;
		3165
		3166	1
		3167	}
		3168
		3169	cf::client->attach (
		3170	on_connect => sub {
		3171	my ($ns) = @_;
		3172
		3173	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3174	},
		3175	on_reply => sub {
		3176	my ($ns, $msg) = @_;
		3177
		3178	# this weird shuffling is so that direct followup queries
		3179	# get handled first
		3180	my $queue = delete $ns->{query_queue}
		3181	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3182
		3183	(shift @$queue)->[1]->($msg);
		3184	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3185
		3186	push @{ $ns->{query_queue} }, @$queue;
		3187
		3188	if (@{ $ns->{query_queue} } == @$queue) {
		3189	if (@$queue) {
		3190	$ns->send_packet ($ns->{query_queue}[0][0]);
		3191	} else {
		3192	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3193	}
		3194	}
		3195	},
		3196	on_exticmd => sub {
		3197	my ($ns, $buf) = @_;
		3198
		3199	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3200
		3201	if (ref $msg) {
		3202	my ($type, $reply, @payload) =
		3203	"ARRAY" eq ref $msg
		3204	? @$msg
		3205	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3206
		3207	my @reply;
		3208
		3209	if (my $cb = $EXTICMD{$type}) {
		3210	@reply = $cb->($ns, @payload);
		3211	}
		3212
		3213	$ns->ext_reply ($reply, @reply)
		3214	if $reply;
		3215
		3216	} else {
		3217	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3218	}
		3219
		3220	cf::override;
		3221	},
		3222	);
		3223
		3224	=item $client->async (\&cb)
		3225
		3226	Create a new coroutine, running the specified callback. The coroutine will
		3227	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3228	or loss of connection).
		3229
		3230	=cut
		3231
		3232	sub cf::client::async {
		3233	my ($self, $cb) = @_;
		3234
		3235	my $coro = &Coro::async ($cb);
		3236
		3237	$coro->on_destroy (sub {
		3238	delete $self->{_coro}{$coro+0};
		3239	});
		3240
		3241	$self->{_coro}{$coro+0} = $coro;
		3242
		3243	$coro
		3244	}
		3245
		3246	cf::client->attach (
		3247	on_client_destroy => sub {
		3248	my ($ns) = @_;
		3249
		3250	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3251	},
		3252	);
		3253
		3254	=back
		3255
		3256
		3257	=head2 SAFE SCRIPTING
		3258
		3259	Functions that provide a safe environment to compile and execute
		3260	snippets of perl code without them endangering the safety of the server
		3261	itself. Looping constructs, I/O operators and other built-in functionality
		3262	is not available in the safe scripting environment, and the number of
		3263	functions and methods that can be called is greatly reduced.
		3264
		3265	=cut
770		3266
771	our $safe = new Safe "safe";	3267	our $safe = new Safe "safe";
772	our $safe_hole = new Safe::Hole;	3268	our $safe_hole = new Safe::Hole;
773		3269
774	$SIG{FPE} = 'IGNORE';	3270	$SIG{FPE} = 'IGNORE';
775		3271
776	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3272	$safe->permit_only (Opcode::opset qw(
		3273	:base_core :base_mem :base_orig :base_math :base_loop
		3274	grepstart grepwhile mapstart mapwhile
		3275	sort time
		3276	));
777		3277
778	# here we export the classes and methods available to script code	3278	# here we export the classes and methods available to script code
779		3279
		3280	=pod
		3281
		3282	The following functions and methods are available within a safe environment:
		3283
		3284	cf::object
		3285	contr pay_amount pay_player map x y force_find force_add destroy
		3286	insert remove name archname title slaying race decrease split
		3287	value
		3288
		3289	cf::object::player
		3290	player
		3291
		3292	cf::player
		3293	peaceful
		3294
		3295	cf::map
		3296	trigger
		3297
		3298	=cut
		3299
780	for (	3300	for (
781	["cf::object" => qw(contr pay_amount pay_player)],	3301	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3302	insert remove inv nrof name archname title slaying race
		3303	decrease split destroy change_exp value msg lore send_msg)],
782	["cf::object::player" => qw(player)],	3304	["cf::object::player" => qw(player)],
783	["cf::player" => qw(peaceful)],	3305	["cf::player" => qw(peaceful send_msg)],
		3306	["cf::map" => qw(trigger)],
784	) {	3307	) {
785	no strict 'refs';
786	my ($pkg, @funs) = @$_;	3308	my ($pkg, @funs) = @$_;
787	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3309	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
788	for @funs;	3310	for @funs;
789	}	3311	}
790		3312
		3313	=over 4
		3314
		3315	=item @retval = safe_eval $code, [var => value, ...]
		3316
		3317	Compiled and executes the given perl code snippet. additional var/value
		3318	pairs result in temporary local (my) scalar variables of the given name
		3319	that are available in the code snippet. Example:
		3320
		3321	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3322
		3323	=cut
		3324
791	sub safe_eval($;@) {	3325	sub safe_eval($;@) {
792	my ($code, %vars) = @_;	3326	my ($code, %vars) = @_;
793		3327
794	my $qcode = $code;	3328	my $qcode = $code;
795	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3329	$qcode =~ s/"/‟/g; # not allowed in #line filenames
796	$qcode =~ s/\n/\\n/g;	3330	$qcode =~ s/\n/\\n/g;
797		3331
		3332	%vars = (_dummy => 0) unless %vars;
		3333
		3334	my @res;
798	local $_;	3335	local $_;
799	local @safe::cf::_safe_eval_args = values %vars;
800		3336
801	my $eval =	3337	my $eval =
802	"do {\n"	3338	"do {\n"
803	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3339	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
804	. "#line 0 \"{$qcode}\"\n"	3340	. "#line 0 \"{$qcode}\"\n"
805	. $code	3341	. $code
806	. "\n}"	3342	. "\n}"
807	;	3343	;
808		3344
		3345	if ($CFG{safe_eval}) {
809	sub_generation_inc;	3346	sub_generation_inc;
		3347	local @safe::cf::_safe_eval_args = values %vars;
810	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3348	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
811	sub_generation_inc;	3349	sub_generation_inc;
		3350	} else {
		3351	local @cf::_safe_eval_args = values %vars;
		3352	@res = wantarray ? eval eval : scalar eval $eval;
		3353	}
812		3354
813	if ($@) {	3355	if ($@) {
814	warn "$@";	3356	warn "$@",
815	warn "while executing safe code '$code'\n";	3357	"while executing safe code '$code'\n",
816	warn "with arguments " . (join " ", %vars) . "\n";	3358	"with arguments " . (join " ", %vars) . "\n";
817	}	3359	}
818		3360
819	wantarray ? @res : $res[0]	3361	wantarray ? @res : $res[0]
820	}	3362	}
		3363
		3364	=item cf::register_script_function $function => $cb
		3365
		3366	Register a function that can be called from within map/npc scripts. The
		3367	function should be reasonably secure and should be put into a package name
		3368	like the extension.
		3369
		3370	Example: register a function that gets called whenever a map script calls
		3371	C<rent::overview>, as used by the C<rent> extension.
		3372
		3373	cf::register_script_function "rent::overview" => sub {
		3374	...
		3375	};
		3376
		3377	=cut
821		3378
822	sub register_script_function {	3379	sub register_script_function {
823	my ($fun, $cb) = @_;	3380	my ($fun, $cb) = @_;
824		3381
825	no strict 'refs';	3382	$fun = "safe::$fun" if $CFG{safe_eval};
826	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3383	*$fun = $safe_hole->wrap ($cb);
827	}	3384	}
		3385
		3386	=back
		3387
		3388	=cut
828		3389
829	#############################################################################	3390	#############################################################################
830	# the server's main()	3391	# the server's init and main functions
		3392
		3393	sub load_facedata($) {
		3394	my ($path) = @_;
		3395
		3396	# HACK to clear player env face cache, we need some signal framework
		3397	# for this (global event?)
		3398	%ext::player_env::MUSIC_FACE_CACHE = ();
		3399
		3400	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3401
		3402	trace "loading facedata from $path\n";
		3403
		3404	0 < aio_load $path, my $facedata
		3405	or die "$path: $!";
		3406
		3407	$facedata = Coro::Storable::thaw $facedata;
		3408
		3409	$facedata->{version} == 2
		3410	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3411
		3412	# patch in the exptable
		3413	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3414	$facedata->{resource}{"res/exp_table"} = {
		3415	type => FT_RSRC,
		3416	data => $exp_table,
		3417	hash => (Digest::MD5::md5 $exp_table),
		3418	};
		3419	cf::cede_to_tick;
		3420
		3421	{
		3422	my $faces = $facedata->{faceinfo};
		3423
		3424	while (my ($face, $info) = each %$faces) {
		3425	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3426
		3427	cf::face::set_visibility $idx, $info->{visibility};
		3428	cf::face::set_magicmap $idx, $info->{magicmap};
		3429	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3430	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3431	cf::face::set_data $idx, 2, "-", chr $idx & 255;
		3432
		3433	cf::cede_to_tick;
		3434	}
		3435
		3436	while (my ($face, $info) = each %$faces) {
		3437	next unless $info->{smooth};
		3438
		3439	my $idx = cf::face::find $face
		3440	or next;
		3441
		3442	if (my $smooth = cf::face::find $info->{smooth}) {
		3443	cf::face::set_smooth $idx, $smooth;
		3444	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3445	} else {
		3446	error "smooth face '$info->{smooth}' not found for face '$face'";
		3447	}
		3448
		3449	cf::cede_to_tick;
		3450	}
		3451	}
		3452
		3453	{
		3454	my $anims = $facedata->{animinfo};
		3455
		3456	while (my ($anim, $info) = each %$anims) {
		3457	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3458	cf::cede_to_tick;
		3459	}
		3460
		3461	cf::anim::invalidate_all; # d'oh
		3462	}
		3463
		3464	{
		3465	my $res = $facedata->{resource};
		3466
		3467	while (my ($name, $info) = each %$res) {
		3468	if (defined $info->{type}) {
		3469	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3470
		3471	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3472	cf::face::set_type $idx, $info->{type};
		3473	} else {
		3474	$RESOURCE{$name} = $info; # unused
		3475	}
		3476
		3477	cf::cede_to_tick;
		3478	}
		3479	}
		3480
		3481	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3482
		3483	1
		3484	}
		3485
		3486	register_exticmd fx_want => sub {
		3487	my ($ns, $want) = @_;
		3488
		3489	while (my ($k, $v) = each %$want) {
		3490	$ns->fx_want ($k, $v);
		3491	}
		3492	};
		3493
		3494	sub load_resource_file($) {
		3495	my $guard = lock_acquire "load_resource_file";
		3496
		3497	my $status = load_resource_file_ $_[0];
		3498	get_slot 0.1, 100;
		3499	cf::arch::commit_load;
		3500
		3501	$status
		3502	}
		3503
		3504	sub reload_regions {
		3505	# HACK to clear player env face cache, we need some signal framework
		3506	# for this (global event?)
		3507	%ext::player_env::MUSIC_FACE_CACHE = ();
		3508
		3509	load_resource_file "$MAPDIR/regions"
		3510	or die "unable to load regions file\n";
		3511
		3512	for (cf::region::list) {
		3513	$_->{match} = qr/$_->{match}/
		3514	if exists $_->{match};
		3515	}
		3516	}
		3517
		3518	sub reload_facedata {
		3519	load_facedata "$DATADIR/facedata"
		3520	or die "unable to load facedata\n";
		3521	}
		3522
		3523	sub reload_archetypes {
		3524	load_resource_file "$DATADIR/archetypes"
		3525	or die "unable to load archetypes\n";
		3526	}
		3527
		3528	sub reload_treasures {
		3529	load_resource_file "$DATADIR/treasures"
		3530	or die "unable to load treasurelists\n";
		3531	}
		3532
		3533	sub reload_sound {
		3534	trace "loading sound config from $DATADIR/sound\n";
		3535
		3536	0 < Coro::AIO::aio_load "$DATADIR/sound", my $data
		3537	or die "$DATADIR/sound $!";
		3538
		3539	my $soundconf = JSON::XS->new->utf8->relaxed->decode ($data);
		3540
		3541	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3542	my $sound = $soundconf->{compat}[$_]
		3543	or next;
		3544
		3545	my $face = cf::face::find "sound/$sound->[1]";
		3546	cf::sound::set $sound->[0] => $face;
		3547	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3548	}
		3549
		3550	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3551	my $face = cf::face::find "sound/$v";
		3552	cf::sound::set $k => $face;
		3553	}
		3554	}
		3555
		3556	sub reload_resources {
		3557	trace "reloading resource files...\n";
		3558
		3559	reload_exp_table;
		3560	reload_materials;
		3561	reload_facedata;
		3562	reload_sound;
		3563	reload_archetypes;
		3564	reload_regions;
		3565	reload_treasures;
		3566
		3567	trace "finished reloading resource files\n";
		3568	}
		3569
		3570	sub reload_config {
		3571	trace "reloading config file...\n";
		3572
		3573	0 < aio_load "$CONFDIR/config", my $config
		3574	or die "$CONFDIR/config: $!";
		3575
		3576	utf8::decode $config;
		3577	*CFG = yaml_load $config;
		3578
		3579	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3580
		3581	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3582	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3583
		3584	if (exists $CFG{mlockall}) {
		3585	eval {
		3586	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3587	and die "WARNING: m(un)lockall failed: $!\n";
		3588	};
		3589	warn $@ if $@;
		3590	}
		3591	}
		3592
		3593	sub pidfile() {
		3594	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3595	or die "$PIDFILE: $!";
		3596	flock $fh, &Fcntl::LOCK_EX
		3597	or die "$PIDFILE: flock: $!";
		3598	$fh
		3599	}
		3600
		3601	# make sure only one server instance is running at any one time
		3602	sub atomic {
		3603	my $fh = pidfile;
		3604
		3605	my $pid = <$fh>;
		3606	kill 9, $pid if $pid > 0;
		3607
		3608	seek $fh, 0, 0;
		3609	print $fh $$;
		3610	}
		3611
		3612	sub main_loop {
		3613	trace "EV::loop starting\n";
		3614	if (1) {
		3615	EV::loop;
		3616	}
		3617	trace "EV::loop returned\n";
		3618	goto &main_loop unless $REALLY_UNLOOP;
		3619	}
831		3620
832	sub main {	3621	sub main {
833	Event::loop;	3622	cf::init_globals; # initialise logging
		3623
		3624	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3625	LOG llevInfo, "Copyright (C) 2005-2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3626	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3627	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3628
		3629	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3630
		3631	# we must not ever block the main coroutine
		3632	local $Coro::idle = sub {
		3633	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3634	(async {
		3635	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3636	EV::loop EV::LOOP_ONESHOT;
		3637	})->prio (Coro::PRIO_MAX);
		3638	};
		3639
		3640	evthread_start IO::AIO::poll_fileno;
		3641
		3642	cf::sync_job {
		3643	cf::incloader::init ();
		3644
		3645	cf::init_anim;
		3646	cf::init_attackmess;
		3647	cf::init_dynamic;
		3648
		3649	cf::load_settings;
		3650
		3651	reload_resources;
		3652	reload_config;
		3653	db_init;
		3654
		3655	cf::init_uuid;
		3656	cf::init_signals;
		3657	cf::init_skills;
		3658
		3659	cf::init_beforeplay;
		3660
		3661	atomic;
		3662
		3663	load_extensions;
		3664
		3665	utime time, time, $RUNTIMEFILE;
		3666
		3667	# no (long-running) fork's whatsoever before this point(!)
		3668	use POSIX ();
		3669	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3670
		3671	cf::_post_init 0;
		3672	};
		3673
		3674	cf::object::thawer::errors_are_fatal 0;
		3675	info "parse errors in files are no longer fatal from this point on.\n";
		3676
		3677	my $free_main; $free_main = EV::idle sub {
		3678	undef $free_main;
		3679	undef &main; # free gobs of memory :)
		3680	};
		3681
		3682	goto &main_loop;
834	}	3683	}
835		3684
836	#############################################################################	3685	#############################################################################
837	# initialisation	3686	# initialisation and cleanup
838		3687
839	register "<global>", __PACKAGE__;	3688	# install some emergency cleanup handlers
		3689	BEGIN {
		3690	our %SIGWATCHER = ();
		3691	for my $signal (qw(INT HUP TERM)) {
		3692	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3693	cf::cleanup "SIG$signal";
		3694	};
		3695	}
		3696	}
840		3697
841	unshift @INC, $LIBDIR;	3698	sub write_runtime_sync {
		3699	my $t0 = AE::time;
842		3700
843	load_extensions;	3701	# first touch the runtime file to show we are still running:
		3702	# the fsync below can take a very very long time.
844		3703
845	$TICK_WATCHER = Event->timer (	3704	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
846	prio => 1,	3705
847	at => $NEXT_TICK || 1,	3706	my $guard = cf::lock_acquire "write_runtime";
848	cb => sub {	3707
		3708	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3709	or return;
		3710
		3711	my $value = $cf::RUNTIME + 90 + 10;
		3712	# 10 is the runtime save interval, for a monotonic clock
		3713	# 60 allows for the watchdog to kill the server.
		3714
		3715	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3716	and return;
		3717
		3718	# always fsync - this file is important
		3719	aio_fsync $fh
		3720	and return;
		3721
		3722	# touch it again to show we are up-to-date
		3723	aio_utime $fh, undef, undef;
		3724
		3725	close $fh
		3726	or return;
		3727
		3728	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3729	and return;
		3730
		3731	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3732
		3733	1
		3734	}
		3735
		3736	our $uuid_lock;
		3737	our $uuid_skip;
		3738
		3739	sub write_uuid_sync($) {
		3740	$uuid_skip ||= $_[0];
		3741
		3742	return if $uuid_lock;
		3743	local $uuid_lock = 1;
		3744
		3745	my $uuid = "$LOCALDIR/uuid";
		3746
		3747	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3748	or return;
		3749
		3750	my $value = uuid_seq uuid_cur;
		3751
		3752	unless ($value) {
		3753	info "cowardly refusing to write zero uuid value!\n";
		3754	return;
		3755	}
		3756
		3757	my $value = uuid_str $value + $uuid_skip;
		3758	$uuid_skip = 0;
		3759
		3760	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3761	and return;
		3762
		3763	# always fsync - this file is important
		3764	aio_fsync $fh
		3765	and return;
		3766
		3767	close $fh
		3768	or return;
		3769
		3770	aio_rename "$uuid~", $uuid
		3771	and return;
		3772
		3773	trace "uuid file written ($value).\n";
		3774
		3775	1
		3776
		3777	}
		3778
		3779	sub write_uuid($$) {
		3780	my ($skip, $sync) = @_;
		3781
		3782	$sync ? write_uuid_sync $skip
		3783	: async { write_uuid_sync $skip };
		3784	}
		3785
		3786	sub emergency_save() {
		3787	my $freeze_guard = cf::freeze_mainloop;
		3788
		3789	info "emergency_perl_save: enter\n";
		3790
		3791	# this is a trade-off: we want to be very quick here, so
		3792	# save all maps without fsync, and later call a global sync
		3793	# (which in turn might be very very slow)
		3794	local $USE_FSYNC = 0;
		3795
		3796	cf::sync_job {
		3797	cf::write_runtime_sync; # external watchdog should not bark
		3798
		3799	# use a peculiar iteration method to avoid tripping on perl
		3800	# refcount bugs in for. also avoids problems with players
		3801	# and maps saved/destroyed asynchronously.
		3802	info "emergency_perl_save: begin player save\n";
		3803	for my $login (keys %cf::PLAYER) {
		3804	my $pl = $cf::PLAYER{$login} or next;
		3805	$pl->valid or next;
		3806	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3807	$pl->save;
		3808	}
		3809	info "emergency_perl_save: end player save\n";
		3810
		3811	cf::write_runtime_sync; # external watchdog should not bark
		3812
		3813	info "emergency_perl_save: begin map save\n";
		3814	for my $path (keys %cf::MAP) {
		3815	my $map = $cf::MAP{$path} or next;
		3816	$map->valid or next;
		3817	$map->save;
		3818	}
		3819	info "emergency_perl_save: end map save\n";
		3820
		3821	cf::write_runtime_sync; # external watchdog should not bark
		3822
		3823	info "emergency_perl_save: begin database checkpoint\n";
		3824	BDB::db_env_txn_checkpoint $DB_ENV;
		3825	info "emergency_perl_save: end database checkpoint\n";
		3826
		3827	info "emergency_perl_save: begin write uuid\n";
		3828	write_uuid_sync 1;
		3829	info "emergency_perl_save: end write uuid\n";
		3830
		3831	cf::write_runtime_sync; # external watchdog should not bark
		3832
		3833	trace "emergency_perl_save: syncing database to disk";
		3834	BDB::db_env_txn_checkpoint $DB_ENV;
		3835
		3836	info "emergency_perl_save: starting sync\n";
		3837	IO::AIO::aio_sync sub {
		3838	info "emergency_perl_save: finished sync\n";
		3839	};
		3840
		3841	cf::write_runtime_sync; # external watchdog should not bark
		3842
		3843	trace "emergency_perl_save: flushing outstanding aio requests";
		3844	while (IO::AIO::nreqs || BDB::nreqs) {
		3845	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3846	}
		3847
		3848	cf::write_runtime_sync; # external watchdog should not bark
		3849	};
		3850
		3851	info "emergency_perl_save: leave\n";
		3852	}
		3853
		3854	sub post_cleanup {
		3855	my ($make_core) = @_;
		3856
		3857	IO::AIO::flush;
		3858
		3859	error Carp::longmess "post_cleanup backtrace"
		3860	if $make_core;
		3861
		3862	my $fh = pidfile;
		3863	unlink $PIDFILE if <$fh> == $$;
		3864	}
		3865
		3866	# a safer delete_package, copied from Symbol
		3867	sub clear_package($) {
		3868	my $pkg = shift;
		3869
		3870	# expand to full symbol table name if needed
		3871	unless ($pkg =~ /^main::.*::$/) {
		3872	$pkg = "main$pkg" if $pkg =~ /^::/;
		3873	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3874	$pkg .= '::' unless $pkg =~ /::$/;
		3875	}
		3876
		3877	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3878	my $stem_symtab = *{$stem}{HASH};
		3879
		3880	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3881	or return;
		3882
		3883	# clear all symbols
		3884	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3885	for my $name (keys %$leaf_symtab) {
		3886	_gv_clear *{"$pkg$name"};
		3887	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3888	}
		3889	}
		3890
		3891	sub do_reload_perl() {
		3892	# can/must only be called in main
		3893	unless (in_main) {
		3894	error "can only reload from main coroutine";
		3895	return;
		3896	}
		3897
		3898	return if $RELOAD++;
		3899
		3900	my $t1 = AE::time;
		3901
		3902	while ($RELOAD) {
		3903	cf::get_slot 0.1, -1, "reload_perl";
		3904	info "perl_reload: reloading...";
		3905
		3906	trace "perl_reload: entering sync_job";
		3907
		3908	cf::sync_job {
		3909	#cf::emergency_save;
		3910
		3911	trace "perl_reload: cancelling all extension coros";
		3912	$_->cancel for values %EXT_CORO;
		3913	%EXT_CORO = ();
		3914
		3915	trace "perl_reload: removing commands";
		3916	%COMMAND = ();
		3917
		3918	trace "perl_reload: removing ext/exti commands";
		3919	%EXTCMD = ();
		3920	%EXTICMD = ();
		3921
		3922	trace "perl_reload: unloading/nuking all extensions";
		3923	for my $pkg (@EXTS) {
		3924	trace "... unloading $pkg";
		3925
		3926	if (my $cb = $pkg->can ("unload")) {
		3927	eval {
		3928	$cb->($pkg);
		3929	1
		3930	} or error "$pkg unloaded, but with errors: $@";
		3931	}
		3932
		3933	trace "... clearing $pkg";
		3934	clear_package $pkg;
		3935	}
		3936
		3937	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3938	while (my ($k, $v) = each %INC) {
		3939	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3940
		3941	trace "... unloading $k";
		3942	delete $INC{$k};
		3943
		3944	$k =~ s/\.pm$//;
		3945	$k =~ s/\//::/g;
		3946
		3947	if (my $cb = $k->can ("unload_module")) {
		3948	$cb->();
		3949	}
		3950
		3951	clear_package $k;
		3952	}
		3953
		3954	trace "perl_reload: getting rid of safe::, as good as possible";
		3955	clear_package "safe::$_"
		3956	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3957
		3958	trace "perl_reload: unloading cf.pm \"a bit\"";
		3959	delete $INC{"cf.pm"};
		3960	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3961
		3962	# don't, removes xs symbols, too,
		3963	# and global variables created in xs
		3964	#clear_package __PACKAGE__;
		3965
		3966	info "perl_reload: unload completed, starting to reload now";
		3967
		3968	trace "perl_reload: reloading cf.pm";
		3969	require cf;
		3970	cf::_connect_to_perl_1;
		3971
		3972	trace "perl_reload: loading config and database again";
		3973	cf::reload_config;
		3974
		3975	trace "perl_reload: loading extensions";
		3976	cf::load_extensions;
		3977
		3978	if ($REATTACH_ON_RELOAD) {
		3979	trace "perl_reload: reattaching attachments to objects/players";
		3980	_global_reattach; # objects, sockets
		3981	trace "perl_reload: reattaching attachments to maps";
		3982	reattach $_ for values %MAP;
		3983	trace "perl_reload: reattaching attachments to players";
		3984	reattach $_ for values %PLAYER;
		3985	}
		3986
		3987	cf::_post_init 1;
		3988
		3989	trace "perl_reload: leaving sync_job";
		3990
		3991	1
		3992	} or do {
		3993	error $@;
		3994	cf::cleanup "perl_reload: error, exiting.";
		3995	};
		3996
		3997	--$RELOAD;
		3998	}
		3999
		4000	$t1 = AE::time - $t1;
		4001	info "perl_reload: completed in ${t1}s\n";
		4002	};
		4003
		4004	our $RELOAD_WATCHER; # used only during reload
		4005
		4006	sub reload_perl() {
		4007	# doing reload synchronously and two reloads happen back-to-back,
		4008	# coro crashes during coro_state_free->destroy here.
		4009
		4010	$RELOAD_WATCHER ||= cf::async {
		4011	Coro::AIO::aio_wait cache_extensions;
		4012
		4013	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4014	do_reload_perl;
		4015	undef $RELOAD_WATCHER;
		4016	};
		4017	};
		4018	}
		4019
		4020	register_command "reload" => sub {
		4021	my ($who, $arg) = @_;
		4022
		4023	if ($who->flag (FLAG_WIZ)) {
		4024	$who->message ("reloading server.");
		4025	async {
		4026	$Coro::current->{desc} = "perl_reload";
		4027	reload_perl;
		4028	};
		4029	}
		4030	};
		4031
		4032	#############################################################################
		4033
		4034	my $bug_warning = 0;
		4035
		4036	our @WAIT_FOR_TICK;
		4037	our @WAIT_FOR_TICK_BEGIN;
		4038
		4039	sub wait_for_tick() {
		4040	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4041
		4042	my $signal = new Coro::Signal;
		4043	push @WAIT_FOR_TICK, $signal;
		4044	$signal->wait;
		4045	}
		4046
		4047	sub wait_for_tick_begin() {
		4048	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4049
		4050	my $signal = new Coro::Signal;
		4051	push @WAIT_FOR_TICK_BEGIN, $signal;
		4052	$signal->wait;
		4053	}
		4054
		4055	sub tick {
		4056	if ($Coro::current != $Coro::main) {
		4057	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4058	unless ++$bug_warning > 10;
		4059	return;
		4060	}
		4061
849	cf::server_tick; # one server iteration	4062	cf::server_tick; # one server iteration
850		4063
851	my $NOW = Event::time;	4064	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
852	$NEXT_TICK += $TICK;
853		4065
854	# if we are delayed by four ticks, skip them all	4066	if ($NOW >= $NEXT_RUNTIME_WRITE) {
855	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	4067	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
856		4068	Coro::async_pool {
857	$TICK_WATCHER->at ($NEXT_TICK);	4069	$Coro::current->{desc} = "runtime saver";
858	$TICK_WATCHER->start;	4070	write_runtime_sync
		4071	or error "ERROR: unable to write runtime file: $!";
		4072	};
859	},	4073	}
860	);
861		4074
862	_reload_2;	4075	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4076	$sig->send;
		4077	}
		4078	while (my $sig = shift @WAIT_FOR_TICK) {
		4079	$sig->send;
		4080	}
		4081
		4082	$LOAD = ($NOW - $TICK_START) / $TICK;
		4083	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4084
		4085	if (0) {
		4086	if ($NEXT_TICK) {
		4087	my $jitter = $TICK_START - $NEXT_TICK;
		4088	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4089	debug "jitter $JITTER\n";#d#
		4090	}
		4091	}
		4092	}
		4093
		4094	{
		4095	# configure BDB
		4096
		4097	BDB::min_parallel 16;
		4098	BDB::max_poll_reqs $TICK * 0.1;
		4099	$AnyEvent::BDB::WATCHER->priority (1);
		4100
		4101	unless ($DB_ENV) {
		4102	$DB_ENV = BDB::db_env_create;
		4103	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4104	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4105	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4106	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4107	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4108
		4109	cf::sync_job {
		4110	eval {
		4111	BDB::db_env_open
		4112	$DB_ENV,
		4113	$BDBDIR,
		4114	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4115	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4116	0666;
		4117
		4118	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		4119	};
		4120
		4121	cf::cleanup "db_env_open(db): $@" if $@;
		4122	};
		4123	}
		4124
		4125	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		4126	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		4127	};
		4128	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		4129	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		4130	};
		4131	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4132	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4133	};
		4134	}
		4135
		4136	{
		4137	# configure IO::AIO
		4138
		4139	IO::AIO::min_parallel 8;
		4140	IO::AIO::max_poll_time $TICK * 0.1;
		4141	undef $AnyEvent::AIO::WATCHER;
		4142	}
		4143
		4144	our $_log_backtrace;
		4145	our $_log_backtrace_last;
		4146
		4147	sub _log_backtrace {
		4148	my ($msg, @addr) = @_;
		4149
		4150	$msg =~ s/\n$//;
		4151
		4152	if ($_log_backtrace_last eq $msg) {
		4153	LOG llevInfo, "[ABT] $msg\n";
		4154	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4155	# limit the # of concurrent backtraces
		4156	} elsif ($_log_backtrace < 2) {
		4157	$_log_backtrace_last = $msg;
		4158	++$_log_backtrace;
		4159	my $perl_bt = Carp::longmess $msg;
		4160	async {
		4161	$Coro::current->{desc} = "abt $msg";
		4162
		4163	my @bt = fork_call {
		4164	@addr = map { sprintf "%x", $_ } @addr;
		4165	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4166	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4167	or die "addr2line: $!";
		4168
		4169	my @funcs;
		4170	my @res = <$fh>;
		4171	chomp for @res;
		4172	while (@res) {
		4173	my ($func, $line) = splice @res, 0, 2, ();
		4174	push @funcs, "[$func] $line";
		4175	}
		4176
		4177	@funcs
		4178	};
		4179
		4180	LOG llevInfo, "[ABT] $perl_bt\n";
		4181	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4182	LOG llevInfo, "[ABT] $_\n" for @bt;
		4183	--$_log_backtrace;
		4184	};
		4185	} else {
		4186	LOG llevInfo, "[ABT] $msg\n";
		4187	LOG llevInfo, "[ABT] [overload, suppressed]\n";
		4188	}
		4189	}
		4190
		4191	# load additional modules
		4192	require "cf/$_.pm" for @EXTRA_MODULES;
		4193	cf::_connect_to_perl_2;
		4194
		4195	END { cf::emergency_save }
863		4196
864	1	4197	1
865		4198

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