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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC vs.
Revision 1.549 by root, Tue May 11 13:19:59 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;
10	use YAML::Syck ();	57	use YAML::XS ();
		58	use IO::AIO ();
11	use Time::HiRes;	59	use Time::HiRes;
12	use Event;	60	use Compress::LZF;
13	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
14		62
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	63	AnyEvent::detect;
16	$YAML::Syck::ImplicitUnicode = 1;
17		64
18	use strict;	65	# configure various modules to our taste
		66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
19		69
20	_init_vars;	70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
21		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
		82
22	our %COMMAND = ();	83	our %COMMAND = ();
		84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
		87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
23	our @EVENT;	93	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
25		96
26	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
27	our $TICK_WATCHER;	98	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
28	our $NEXT_TICK;	121	our $NEXT_TICK;
		122	our $USE_FSYNC = 1; # use fsync to write maps - default on
		123
		124	our $BDB_DEADLOCK_WATCHER;
		125	our $BDB_CHECKPOINT_WATCHER;
		126	our $BDB_TRICKLE_WATCHER;
		127	our $DB_ENV;
		128
		129	our @EXTRA_MODULES = qw(pod match mapscript incloader);
29		130
30	our %CFG;	131	our %CFG;
31		132
32	our $uptime;	133	our $UPTIME; $UPTIME ||= time;
		134	our $RUNTIME;
		135	our $NOW;
33		136
34	$uptime ||= time;	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	}
35		176
36	#############################################################################	177	#############################################################################
37		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
38	=head2 GLOBAL VARIABLES	190	=head2 GLOBAL VARIABLES
39		191
40	=over 4	192	=over 4
41		193
42	=item $cf::LIBDIR	194	=item $cf::UPTIME
43		195
44	The perl library directory, where extensions and cf-specific modules can	196	The timestamp of the server start (so not actually an uptime).
45	be found. It will be added to C<@INC> automatically.	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.
46		215
47	=item $cf::TICK	216	=item $cf::TICK
48		217
49	The interval between server ticks, in seconds.	218	The interval between server ticks, in seconds.
50		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
51	=item %cf::CFG	230	=item %cf::CFG
52		231
53	Configuration for the server, loaded from C</etc/crossfire/config>, or	232	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
54	from wherever your confdir points to.	233	from wherever your confdir points to.
55		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
56	=back	258	=back
57		259
58	=cut	260	=cut
59		261
60	BEGIN {	262	sub error(@) { LOG llevError, join "", @_ }
61	*CORE::GLOBAL::warn = sub {	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 {
62	my $msg = join "", @_;	269	my $msg = join "", @_;
		270
63	$msg .= "\n"	271	$msg .= "\n"
64	unless $msg =~ /\n$/;	272	unless $msg =~ /\n$/;
65		273
66	print STDERR "cfperl: $msg";	274	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
67	LOG llevError, "cfperl: $msg";
68	};
69	}
70		275
		276	LOG llevWarn, $msg;
		277	};
		278
		279	$Coro::State::DIEHOOK = sub {
		280	return unless $^S eq 0; # "eq", not "=="
		281
		282	error Carp::longmess $_[0];
		283
		284	if (in_main) {#d#
		285	error "DIEHOOK called in main context, Coro bug?\n";#d#
		286	return;#d#
		287	}#d#
		288
		289	# kill coroutine otherwise
		290	Coro::terminate
		291	};
		292
		293	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		294	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		295	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		296	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		297	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		298	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
71	@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)
72		300
73	# 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
74	# within the Safe compartment.	302	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	303	for my $pkg (qw(
76	no strict 'refs';	304	cf::global cf::attachable
		305	cf::object cf::object::player
		306	cf::client cf::player
		307	cf::arch cf::living
		308	cf::map cf::mapspace
		309	cf::party cf::region
		310	)) {
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	311	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	312	}
79		313
80	$Event::DIED = sub {	314	$EV::DIED = sub {
81	warn "error in event callback: @_";	315	Carp::cluck "error in event callback: @_";
82	};	316	};
83		317
84	my %ext_pkg;	318	#############################################################################
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89		319
90	=head2 UTILITY FUNCTIONS	320	=head2 UTILITY FUNCTIONS
91		321
92	=over 4	322	=over 4
93		323
94	=cut	324	=item dumpval $ref
95		325
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	326	=cut
97		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 $_[0]: '$@']";
		345	}
		346
98	=item $ref = cf::from_json $json	347	=item $ref = cf::decode_json $json
99		348
100	Converts a JSON string into the corresponding perl data structure.	349	Converts a JSON string into the corresponding perl data structure.
101		350
102	=cut
103
104	sub from_json($) {
105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
106	JSON::Syck::Load $_[0]
107	}
108
109	=item $json = cf::to_json $ref	351	=item $json = cf::encode_json $ref
110		352
111	Converts a perl data structure into its JSON representation.	353	Converts a perl data structure into its JSON representation.
112		354
113	=cut	355	=cut
114		356
115	sub to_json($) {	357	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	358
117	JSON::Syck::Dump $_[0]	359	sub encode_json($) { $json_coder->encode ($_[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	=item cf::lock_wait $string
		389
		390	Wait until the given lock is available. See cf::lock_acquire.
		391
		392	=item my $lock = cf::lock_acquire $string
		393
		394	Wait until the given lock is available and then acquires it and returns
		395	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		396	for example when the coroutine gets canceled), the lock is automatically
		397	returned.
		398
		399	Locks are *not* recursive, locking from the same coro twice results in a
		400	deadlocked coro.
		401
		402	Lock names should begin with a unique identifier (for example, cf::map::find
		403	uses map_find and cf::map::load uses map_load).
		404
		405	=item $locked = cf::lock_active $string
		406
		407	Return true if the lock is currently active, i.e. somebody has locked it.
		408
		409	=cut
		410
		411	our $LOCKS = new Coro::SemaphoreSet;
		412
		413	sub lock_wait($) {
		414	$LOCKS->wait ($_[0]);
		415	}
		416
		417	sub lock_acquire($) {
		418	$LOCKS->guard ($_[0])
		419	}
		420
		421	sub lock_active($) {
		422	$LOCKS->count ($_[0]) < 1
		423	}
		424
		425	sub freeze_mainloop {
		426	tick_inhibit_inc;
		427
		428	&Guard::guard (\&tick_inhibit_dec);
		429	}
		430
		431	=item cf::periodic $interval, $cb
		432
		433	Like EV::periodic, but randomly selects a starting point so that the actions
		434	get spread over time.
		435
		436	=cut
		437
		438	sub periodic($$) {
		439	my ($interval, $cb) = @_;
		440
		441	my $start = rand List::Util::min 180, $interval;
		442
		443	EV::periodic $start, $interval, 0, $cb
		444	}
		445
		446	=item cf::get_slot $time[, $priority[, $name]]
		447
		448	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		449	This call blocks and returns only when you have at least C<$time> seconds
		450	of cpu time till the next tick. The slot is only valid till the next cede.
		451
		452	The optional C<$name> can be used to identify the job to run. It might be
		453	used for statistical purposes and should identify the same time-class.
		454
		455	Useful for short background jobs.
		456
		457	=cut
		458
		459	our @SLOT_QUEUE;
		460	our $SLOT_QUEUE;
		461	our $SLOT_DECAY = 0.9;
		462
		463	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		464	$SLOT_QUEUE = Coro::async {
		465	$Coro::current->desc ("timeslot manager");
		466
		467	my $signal = new Coro::Signal;
		468	my $busy;
		469
		470	while () {
		471	next_job:
		472
		473	my $avail = cf::till_tick;
		474
		475	for (0 .. $#SLOT_QUEUE) {
		476	if ($SLOT_QUEUE[$_][0] <= $avail) {
		477	$busy = 0;
		478	my $job = splice @SLOT_QUEUE, $_, 1, ();
		479	$job->[2]->send;
		480	Coro::cede;
		481	goto next_job;
		482	} else {
		483	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		484	}
		485	}
		486
		487	if (@SLOT_QUEUE) {
		488	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		489	push @cf::WAIT_FOR_TICK, $signal;
		490	$signal->wait;
		491	} else {
		492	$busy = 0;
		493	Coro::schedule;
		494	}
		495	}
		496	};
		497
		498	sub get_slot($;$$) {
		499	return if tick_inhibit || $Coro::current == $Coro::main;
		500
		501	my ($time, $pri, $name) = @_;
		502
		503	$time = clamp $time, 0.01, $TICK * .6;
		504
		505	my $sig = new Coro::Signal;
		506
		507	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		508	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		509	$SLOT_QUEUE->ready;
		510	$sig->wait;
		511	}
		512
		513	=item cf::async { BLOCK }
		514
		515	Currently the same as Coro::async_pool, meaning you cannot use
		516	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		517	thing you are allowed to do is call C<prio> on it.
		518
		519	=cut
		520
		521	BEGIN { *async = \&Coro::async_pool }
		522
		523	=item cf::sync_job { BLOCK }
		524
		525	The design of Deliantra requires that the main coroutine ($Coro::main)
		526	is always able to handle events or runnable, as Deliantra is only
		527	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		528	acceptable.
		529
		530	If it must be done, put the blocking parts into C<sync_job>. This will run
		531	the given BLOCK in another coroutine while waiting for the result. The
		532	server will be frozen during this time, so the block should either finish
		533	fast or be very important.
		534
		535	=cut
		536
		537	sub sync_job(&) {
		538	my ($job) = @_;
		539
		540	if (in_main) {
		541	my $time = AE::time;
		542
		543	# this is the main coro, too bad, we have to block
		544	# till the operation succeeds, freezing the server :/
		545
		546	#LOG llevError, Carp::longmess "sync job";#d#
		547
		548	my $freeze_guard = freeze_mainloop;
		549
		550	my $busy = 1;
		551	my @res;
		552
		553	(async {
		554	$Coro::current->desc ("sync job coro");
		555	@res = eval { $job->() };
		556	error $@ if $@;
		557	undef $busy;
		558	})->prio (Coro::PRIO_MAX);
		559
		560	while ($busy) {
		561	if (Coro::nready) {
		562	Coro::cede_notself;
		563	} else {
		564	EV::loop EV::LOOP_ONESHOT;
		565	}
		566	}
		567
		568	my $time = AE::time - $time;
		569
		570	$TICK_START += $time; # do not account sync jobs to server load
		571
		572	wantarray ? @res : $res[0]
		573	} else {
		574	# we are in another coroutine, how wonderful, everything just works
		575
		576	$job->()
		577	}
		578	}
		579
		580	=item $coro = cf::async_ext { BLOCK }
		581
		582	Like async, but this coro is automatically being canceled when the
		583	extension calling this is being unloaded.
		584
		585	=cut
		586
		587	sub async_ext(&) {
		588	my $cb = shift;
		589
		590	my $coro = &Coro::async ($cb);
		591
		592	$coro->on_destroy (sub {
		593	delete $EXT_CORO{$coro+0};
		594	});
		595	$EXT_CORO{$coro+0} = $coro;
		596
		597	$coro
		598	}
		599
		600	=item fork_call { }, @args
		601
		602	Executes the given code block with the given arguments in a seperate
		603	process, returning the results. Everything must be serialisable with
		604	Coro::Storable. May, of course, block. Note that the executed sub may
		605	never block itself or use any form of event handling.
		606
		607	=cut
		608
		609	sub post_fork {
		610	reset_signals;
		611	}
		612
		613	sub fork_call(&@) {
		614	my ($cb, @args) = @_;
		615
		616	# we seemingly have to make a local copy of the whole thing,
		617	# otherwise perl prematurely frees the stuff :/
		618	# TODO: investigate and fix (likely this will be rather laborious)
		619
		620	my @res = Coro::Util::fork_eval {
		621	cf::post_fork;
		622	&$cb
		623	} @args;
		624
		625	wantarray ? @res : $res[-1]
		626	}
		627
		628	sub objinfo {
		629	(
		630	"counter value" => cf::object::object_count,
		631	"objects created" => cf::object::create_count,
		632	"objects destroyed" => cf::object::destroy_count,
		633	"freelist size" => cf::object::free_count,
		634	"allocated objects" => cf::object::objects_size,
		635	"active objects" => cf::object::actives_size,
		636	)
		637	}
		638
		639	=item $coin = coin_from_name $name
		640
		641	=cut
		642
		643	our %coin_alias = (
		644	"silver" => "silvercoin",
		645	"silvercoin" => "silvercoin",
		646	"silvercoins" => "silvercoin",
		647	"gold" => "goldcoin",
		648	"goldcoin" => "goldcoin",
		649	"goldcoins" => "goldcoin",
		650	"platinum" => "platinacoin",
		651	"platinumcoin" => "platinacoin",
		652	"platinumcoins" => "platinacoin",
		653	"platina" => "platinacoin",
		654	"platinacoin" => "platinacoin",
		655	"platinacoins" => "platinacoin",
		656	"royalty" => "royalty",
		657	"royalties" => "royalty",
		658	);
		659
		660	sub coin_from_name($) {
		661	$coin_alias{$_[0]}
		662	? cf::arch::find $coin_alias{$_[0]}
		663	: undef
		664	}
		665
		666	=item $value = cf::db_get $family => $key
		667
		668	Returns a single value from the environment database.
		669
		670	=item cf::db_put $family => $key => $value
		671
		672	Stores the given C<$value> in the family. It can currently store binary
		673	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		674
		675	=item $db = cf::db_table "name"
		676
		677	Create and/or open a new database table. The string must not be "db" and must be unique
		678	within each server.
		679
		680	=cut
		681
		682	sub db_table($) {
		683	cf::error "db_get called from main context"
		684	if $Coro::current == $Coro::main;
		685
		686	my ($name) = @_;
		687	my $db = BDB::db_create $DB_ENV;
		688
		689	eval {
		690	$db->set_flags (BDB::CHKSUM);
		691
		692	utf8::encode $name;
		693	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		694	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		695	cf::cleanup "db_open(db): $!" if $!;
		696	};
		697	cf::cleanup "db_open(db): $@" if $@;
		698
		699	$db
		700	}
		701
		702	our $DB;
		703
		704	sub db_init {
		705	$DB ||= db_table "db";
		706	}
		707
		708	sub db_get($$) {
		709	my $key = "$_[0]/$_[1]";
		710
		711	cf::error "db_get called from main context"
		712	if $Coro::current == $Coro::main;
		713
		714	BDB::db_get $DB, undef, $key, my $data;
		715
		716	$! ? ()
		717	: $data
		718	}
		719
		720	sub db_put($$$) {
		721	BDB::dbreq_pri 4;
		722	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		723	}
		724
		725	=item cf::cache $id => [$paths...], $processversion => $process
		726
		727	Generic caching function that returns the value of the resource $id,
		728	caching and regenerating as required.
		729
		730	This function can block.
		731
		732	=cut
		733
		734	sub cache {
		735	my ($id, $src, $processversion, $process) = @_;
		736
		737	my $meta =
		738	join "\x00",
		739	$processversion,
		740	map {
		741	aio_stat $_
		742	and Carp::croak "$_: $!";
		743
		744	($_, (stat _)[7,9])
		745	} @$src;
		746
		747	my $dbmeta = db_get cache => "$id/meta";
		748	if ($dbmeta ne $meta) {
		749	# changed, we may need to process
		750
		751	my @data;
		752	my $md5;
		753
		754	for (0 .. $#$src) {
		755	0 <= aio_load $src->[$_], $data[$_]
		756	or Carp::croak "$src->[$_]: $!";
		757	}
		758
		759	# if processing is expensive, check
		760	# checksum first
		761	if (1) {
		762	$md5 =
		763	join "\x00",
		764	$processversion,
		765	map {
		766	cf::cede_to_tick;
		767	($src->[$_], Digest::MD5::md5_hex $data[$_])
		768	} 0.. $#$src;
		769
		770
		771	my $dbmd5 = db_get cache => "$id/md5";
		772	if ($dbmd5 eq $md5) {
		773	db_put cache => "$id/meta", $meta;
		774
		775	return db_get cache => "$id/data";
		776	}
		777	}
		778
		779	my $t1 = Time::HiRes::time;
		780	my $data = $process->(\@data);
		781	my $t2 = Time::HiRes::time;
		782
		783	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		784
		785	db_put cache => "$id/data", $data;
		786	db_put cache => "$id/md5" , $md5;
		787	db_put cache => "$id/meta", $meta;
		788
		789	return $data;
		790	}
		791
		792	db_get cache => "$id/data"
		793	}
		794
		795	=item cf::datalog type => key => value, ...
		796
		797	Log a datalog packet of the given type with the given key-value pairs.
		798
		799	=cut
		800
		801	sub datalog($@) {
		802	my ($type, %kv) = @_;
		803	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
118	}	804	}
119		805
120	=back	806	=back
121		807
122	=cut	808	=cut
123		809
124	#############################################################################	810	#############################################################################
125		811
126	=head2 EVENTS AND OBJECT ATTACHMENTS	812	=head2 ATTACHABLE OBJECTS
		813
		814	Many objects in deliantra are so-called attachable objects. That means you can
		815	attach callbacks/event handlers (a collection of which is called an "attachment")
		816	to it. All such attachable objects support the following methods.
		817
		818	In the following description, CLASS can be any of C<global>, C<object>
		819	C<player>, C<client> or C<map> (i.e. the attachable objects in
		820	Deliantra).
127		821
128	=over 4	822	=over 4
129		823
130	=item $object->attach ($attachment, key => $value...)
131
132	=item $object->detach ($attachment)
133
134	Attach/detach a pre-registered attachment to an object.
135
136	=item $player->attach ($attachment, key => $value...)
137
138	=item $player->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to a player.
141
142	=item $map->attach ($attachment, key => $value...)	824	=item $attachable->attach ($attachment, key => $value...)
143		825
144	=item $map->detach ($attachment)	826	=item $attachable->detach ($attachment)
145		827
146	Attach/detach a pre-registered attachment to a map.	828	Attach/detach a pre-registered attachment to a specific object and give it
		829	the specified key/value pairs as arguments.
147		830
148	=item $bool = $object->attached ($name)	831	Example, attach a minesweeper attachment to the given object, making it a
		832	10x10 minesweeper game:
149		833
150	=item $bool = $player->attached ($name)	834	$obj->attach (minesweeper => width => 10, height => 10);
151		835
152	=item $bool = $map->attached ($name)	836	=item $bool = $attachable->attached ($name)
153		837
154	Checks wether the named attachment is currently attached to the object.	838	Checks wether the named attachment is currently attached to the object.
155		839
156	=item cf::attach_global ...	840	=item cf::CLASS->attach ...
157		841
158	Attach handlers for global events.	842	=item cf::CLASS->detach ...
159		843
160	This and all following C<attach_*>-functions expect any number of the	844	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	845	CLASS. See the next function for an explanation of its arguments.
		846
		847	You can attach to global events by using the C<cf::global> class.
		848
		849	Example, log all player logins:
		850
		851	cf::player->attach (
		852	on_login => sub {
		853	my ($pl) = @_;
		854	...
		855	},
		856	);
		857
		858	Example, attach to the jeweler skill:
		859
		860	cf::object->attach (
		861	type => cf::SKILL,
		862	subtype => cf::SK_JEWELER,
		863	on_use_skill => sub {
		864	my ($sk, $ob, $part, $dir, $msg) = @_;
		865	...
		866	},
		867	);
		868
		869	=item cf::CLASS::attachment $name, ...
		870
		871	Register an attachment by C<$name> through which attachable objects of the
		872	given CLASS can refer to this attachment.
		873
		874	Some classes such as deliantra maps and objects can specify attachments
		875	that are attached at load/instantiate time, thus the need for a name.
		876
		877	These calls expect any number of the following handler/hook descriptions:
162		878
163	=over 4	879	=over 4
164		880
165	=item prio => $number	881	=item prio => $number
166		882
…		…
168	by another C<prio> setting). Lower priority handlers get executed	884	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	885	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	886	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	887	unless you know what you are doing.
172		888
		889	=item type => $type
		890
		891	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		892	given type of objects only (the additional parameter C<subtype> can be
		893	used to further limit to the given subtype).
		894
173	=item on_I<event> => \&cb	895	=item on_I<event> => \&cb
174		896
175	Call the given code reference whenever the named event happens (event is	897	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	898	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	899	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	908	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	909	object/class are recognised.
188		910
189	=back	911	=back
190		912
191	=item cf::attach_to_type $object_type, $subtype, ...	913	Example, define an attachment called "sockpuppet" that calls the given
		914	event handler when a monster attacks:
192		915
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	916	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	917	on_skill_attack => sub {
195	type.	918	my ($self, $victim) = @_;
196		919	...
197	=item cf::attach_to_objects ...
198
199	Attach handlers to all objects. Do not use this except for debugging or
200	very rare events, as handlers are (obviously) called for I<all> objects in
201	the game.
202
203	=item cf::attach_to_players ...
204
205	Attach handlers to all players.
206
207	=item cf::attach_to_maps ...
208
209	Attach handlers to all maps.
210
211	=item cf:register_attachment $name, ...
212
213	Register an attachment by name through which objects can refer to this
214	attachment.
215
216	=item cf:register_player_attachment $name, ...
217
218	Register an attachment by name through which players can refer to this
219	attachment.
220
221	=item cf:register_map_attachment $name, ...
222
223	Register an attachment by name through which maps can refer to this
224	attachment.
225
226	=cut
227
228	# the following variables are defined in .xs and must not be re-created
229	our @CB_GLOBAL = (); # registry for all global events
230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
231	our @CB_PLAYER = ();
232	our @CB_TYPE = (); # registry for type (cf-object class) based events
233	our @CB_MAP = ();
234
235	my %attachment;
236
237	sub _attach_cb($\%$$$) {
238	my ($registry, $undo, $event, $prio, $cb) = @_;
239
240	use sort 'stable';
241
242	$cb = [$prio, $cb];
243
244	@{$registry->[$event]} = sort
245	{ $a->[0] cmp $b->[0] }
246	@{$registry->[$event] || []}, $cb;
247
248	push @{$undo->{cb}}, [$event, $cb];
249	}
250
251	# attach handles attaching event callbacks
252	# the only thing the caller has to do is pass the correct
253	# registry (== where the callback attaches to).
254	sub _attach(\@$@) {
255	my ($registry, $klass, @arg) = @_;
256
257	my $prio = 0;
258
259	my %undo = (
260	registry => $registry,
261	cb => [],
262	);
263
264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
265
266	while (@arg) {
267	my $type = shift @arg;
268
269	if ($type eq "prio") {
270	$prio = shift @arg;
271
272	} elsif ($type eq "package") {
273	my $pkg = shift @arg;
274
275	while (my ($name, $id) = each %cb_id) {
276	if (my $cb = $pkg->can ($name)) {
277	_attach_cb $registry, %undo, $id, $prio, $cb;
278	}
279	}	920	}
280
281	} elsif (exists $cb_id{$type}) {
282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
283
284	} elsif (ref $type) {
285	warn "attaching objects not supported, ignoring.\n";
286
287	} else {
288	shift @arg;
289	warn "attach argument '$type' not supported, ignoring.\n";
290	}
291	}
292
293	\%undo
294	}
295
296	sub _attach_attachment {
297	my ($obj, $name, %arg) = @_;
298
299	return if exists $obj->{_attachment}{$name};
300
301	my $res;
302
303	if (my $attach = $attachment{$name}) {
304	my $registry = $obj->registry;
305
306	for (@$attach) {
307	my ($klass, @attach) = @$_;
308	$res = _attach @$registry, $klass, @attach;
309	}
310
311	$obj->{$name} = \%arg;
312	} else {
313	warn "object uses attachment '$name' that is not available, postponing.\n";
314	}
315
316	$obj->{_attachment}{$name} = undef;
317
318	$res->{attachment} = $name;
319	$res
320	}
321
322	*cf::object::attach =
323	*cf::player::attach =
324	*cf::map::attach = sub {
325	my ($obj, $name, %arg) = @_;
326
327	_attach_attachment $obj, $name, %arg;
328	};
329
330	# all those should be optimised
331	*cf::object::detach =
332	*cf::player::detach =
333	*cf::map::detach = sub {
334	my ($obj, $name) = @_;
335
336	delete $obj->{_attachment}{$name};
337	reattach ($obj);
338	};
339
340	*cf::object::attached =
341	*cf::player::attached =
342	*cf::map::attached = sub {
343	my ($obj, $name) = @_;
344
345	exists $obj->{_attachment}{$name}
346	};
347
348	sub attach_global {
349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
350	}
351
352	sub attach_to_type {
353	my $type = shift;
354	my $subtype = shift;
355
356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_objects {
360	_attach @CB_OBJECT, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_players {
364	_attach @CB_PLAYER, KLASS_PLAYER, @_
365	}
366
367	sub attach_to_maps {
368	_attach @CB_MAP, KLASS_MAP, @_
369	}
370
371	sub register_attachment {
372	my $name = shift;
373
374	$attachment{$name} = [[KLASS_OBJECT, @_]];
375	}
376
377	sub register_player_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_PLAYER, @_]];
381	}
382
383	sub register_map_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_MAP, @_]];
387	}
388
389	our $override;
390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
391
392	sub override {
393	$override = 1;
394	@invoke_results = ();
395	}
396
397	sub do_invoke {
398	my $event = shift;
399	my $callbacks = shift;
400
401	@invoke_results = ();
402
403	local $override;
404
405	for (@$callbacks) {
406	eval { &{$_->[1]} };
407
408	if ($@) {
409	warn "$@";
410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
411	override;
412	}
413
414	return 1 if $override;
415	}
416
417	0	921	}
418	}
419		922
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	923	=item $attachable->valid
421
422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
423
424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
425
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.
429
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL CORE OBJECTS
441
442	=over 4
443
444	=item $object->valid, $player->valid, $map->valid
445		924
446	Just because you have a perl object does not mean that the corresponding	925	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	926	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	927	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	928	can be used to test for existence of the C object part without causing an
450	exception.	929	exception.
451		930
		931	=cut
		932
		933	# the following variables are defined in .xs and must not be re-created
		934	our @CB_GLOBAL = (); # registry for all global events
		935	our @CB_ATTACHABLE = (); # registry for all attachables
		936	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		937	our @CB_PLAYER = ();
		938	our @CB_CLIENT = ();
		939	our @CB_TYPE = (); # registry for type (cf-object class) based events
		940	our @CB_MAP = ();
		941
		942	my %attachment;
		943
		944	sub cf::attachable::thawer_merge {
		945	# simply override everything except _meta
		946	local $_[0]{_meta};
		947	%{$_[0]} = %{$_[1]};
		948	}
		949
		950	sub _attach_cb($$$$) {
		951	my ($registry, $event, $prio, $cb) = @_;
		952
		953	use sort 'stable';
		954
		955	$cb = [$prio, $cb];
		956
		957	@{$registry->[$event]} = sort
		958	{ $a->[0] cmp $b->[0] }
		959	@{$registry->[$event] || []}, $cb;
		960	}
		961
		962	# hack
		963	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		964
		965	# attach handles attaching event callbacks
		966	# the only thing the caller has to do is pass the correct
		967	# registry (== where the callback attaches to).
		968	sub _attach {
		969	my ($registry, $klass, @arg) = @_;
		970
		971	my $object_type;
		972	my $prio = 0;
		973	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		974
		975	#TODO: get rid of this hack
		976	if ($attachable_klass{$klass}) {
		977	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		978	}
		979
		980	while (@arg) {
		981	my $type = shift @arg;
		982
		983	if ($type eq "prio") {
		984	$prio = shift @arg;
		985
		986	} elsif ($type eq "type") {
		987	$object_type = shift @arg;
		988	$registry = $CB_TYPE[$object_type] ||= [];
		989
		990	} elsif ($type eq "subtype") {
		991	defined $object_type or Carp::croak "subtype specified without type";
		992	my $object_subtype = shift @arg;
		993	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		994
		995	} elsif ($type eq "package") {
		996	my $pkg = shift @arg;
		997
		998	while (my ($name, $id) = each %cb_id) {
		999	if (my $cb = $pkg->can ($name)) {
		1000	_attach_cb $registry, $id, $prio, $cb;
		1001	}
		1002	}
		1003
		1004	} elsif (exists $cb_id{$type}) {
		1005	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		1006
		1007	} elsif (ref $type) {
		1008	error "attaching objects not supported, ignoring.\n";
		1009
		1010	} else {
		1011	shift @arg;
		1012	error "attach argument '$type' not supported, ignoring.\n";
		1013	}
		1014	}
		1015	}
		1016
		1017	sub _object_attach {
		1018	my ($obj, $name, %arg) = @_;
		1019
		1020	return if exists $obj->{_attachment}{$name};
		1021
		1022	if (my $attach = $attachment{$name}) {
		1023	my $registry = $obj->registry;
		1024
		1025	for (@$attach) {
		1026	my ($klass, @attach) = @$_;
		1027	_attach $registry, $klass, @attach;
		1028	}
		1029
		1030	$obj->{$name} = \%arg;
		1031	} else {
		1032	info "object uses attachment '$name' which is not available, postponing.\n";
		1033	}
		1034
		1035	$obj->{_attachment}{$name} = undef;
		1036	}
		1037
		1038	sub cf::attachable::attach {
		1039	if (ref $_[0]) {
		1040	_object_attach @_;
		1041	} else {
		1042	_attach shift->_attach_registry, @_;
		1043	}
		1044	_recalc_want;
		1045	};
		1046
		1047	# all those should be optimised
		1048	sub cf::attachable::detach {
		1049	my ($obj, $name) = @_;
		1050
		1051	if (ref $obj) {
		1052	delete $obj->{_attachment}{$name};
		1053	reattach ($obj);
		1054	} else {
		1055	Carp::croak "cannot, currently, detach class attachments";
		1056	}
		1057	_recalc_want;
		1058	};
		1059
		1060	sub cf::attachable::attached {
		1061	my ($obj, $name) = @_;
		1062
		1063	exists $obj->{_attachment}{$name}
		1064	}
		1065
		1066	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1067	eval "#line " . __LINE__ . " 'cf.pm'
		1068	sub cf::\L$klass\E::_attach_registry {
		1069	(\\\@CB_$klass, KLASS_$klass)
		1070	}
		1071
		1072	sub cf::\L$klass\E::attachment {
		1073	my \$name = shift;
		1074
		1075	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1076	}
		1077	";
		1078	die if $@;
		1079	}
		1080
		1081	our $override;
		1082	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1083
		1084	sub override {
		1085	$override = 1;
		1086	@INVOKE_RESULTS = (@_);
		1087	}
		1088
		1089	sub do_invoke {
		1090	my $event = shift;
		1091	my $callbacks = shift;
		1092
		1093	@INVOKE_RESULTS = ();
		1094
		1095	local $override;
		1096
		1097	for (@$callbacks) {
		1098	eval { &{$_->[1]} };
		1099
		1100	if ($@) {
		1101	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1102	override;
		1103	}
		1104
		1105	return 1 if $override;
		1106	}
		1107
		1108	0
		1109	}
		1110
		1111	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1112
		1113	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1114
		1115	Generate an object-specific event with the given arguments.
		1116
		1117	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1118	removed in future versions), and there is no public API to access override
		1119	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1120
452	=back	1121	=back
453		1122
454	=cut	1123	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		1124
460	#############################################################################	1125	#############################################################################
461	# object support	1126	# object support
462		1127
463	sub instantiate {	1128	sub _object_equal($$);
		1129	sub _object_equal($$) {
		1130	my ($a, $b) = @_;
		1131
		1132	return 0 unless (ref $a) eq (ref $b);
		1133
		1134	if ("HASH" eq ref $a) {
		1135	my @ka = keys %$a;
		1136	my @kb = keys %$b;
		1137
		1138	return 0 if @ka != @kb;
		1139
		1140	for (0 .. $#ka) {
		1141	return 0 unless $ka[$_] eq $kb[$_];
		1142	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1143	}
		1144
		1145	} elsif ("ARRAY" eq ref $a) {
		1146
		1147	return 0 if @$a != @$b;
		1148
		1149	for (0 .. $#$a) {
		1150	return 0 unless _object_equal $a->[$_], $b->[$_];
		1151	}
		1152
		1153	} elsif ($a ne $b) {
		1154	return 0;
		1155	}
		1156
		1157	1
		1158	}
		1159
		1160	our $SLOW_MERGES;#d#
		1161	sub _can_merge {
464	my ($obj, $data) = @_;	1162	my ($ob1, $ob2) = @_;
465		1163
466	$data = from_json $data;	1164	++$SLOW_MERGES;#d#
467		1165
468	for (@$data) {	1166	# we do the slow way here
469	my ($name, $args) = @$_;	1167	return _object_equal $ob1, $ob2
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}	1168	}
474		1169
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	1170	sub reattach {
		1171	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	1172	my ($obj) = @_;
		1173
		1174	# no longer needed after getting rid of delete_package?
		1175	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1176
478	my $registry = $obj->registry;	1177	my $registry = $obj->registry;
479		1178
480	@$registry = ();	1179	@$registry = ();
481		1180
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1181	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		1182
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	1183	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	1184	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	1185	for (@$attach) {
487	my ($klass, @attach) = @$_;	1186	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	1187	_attach $registry, $klass, @attach;
489	}	1188	}
490	} else {	1189	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	1190	info "object uses attachment '$name' that is not available, postponing.\n";
492	}
493	}
494	}
495
496	sub object_freezer_save {
497	my ($filename, $rdata, $objs) = @_;
498
499	if (length $$rdata) {
500	warn sprintf "saving %s (%d,%d)\n",
501	$filename, length $$rdata, scalar @$objs;
502
503	if (open my $fh, ">:raw", "$filename~") {
504	chmod SAVE_MODE, $fh;
505	syswrite $fh, $$rdata;
506	close $fh;
507
508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
509	chmod SAVE_MODE, $fh;
510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
511	close $fh;
512	rename "$filename.pst~", "$filename.pst";
513	} else {
514	unlink "$filename.pst";
515	}	1191	}
516
517	rename "$filename~", $filename;
518	} else {
519	warn "FATAL: $filename~: $!\n";
520	}
521	} else {
522	unlink $filename;
523	unlink "$filename.pst";
524	}	1192	}
525	}	1193	}
526		1194
527	sub object_thawer_load {	1195	cf::attachable->attach (
528	my ($filename) = @_;
529
530	local $/;
531
532	my $av;
533
534	#TODO: use sysread etc.
535	if (open my $data, "<:raw:perlio", $filename) {
536	$data = <$data>;
537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
538	$av = eval { (Storable::thaw <$pst>)->{objs} };
539	}
540	return ($data, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	1196	prio => -1000000,
		1197	on_instantiate => sub {
		1198	my ($obj, $data) = @_;
		1199
		1200	$data = decode_json $data;
		1201
		1202	for (@$data) {
		1203	my ($name, $args) = @$_;
		1204
		1205	$obj->attach ($name, %{$args || {} });
		1206	}
		1207	},
		1208	on_reattach => \&reattach,
548	on_clone => sub {	1209	on_clone => sub {
549	my ($src, $dst) = @_;	1210	my ($src, $dst) = @_;
550		1211
551	@{$dst->registry} = @{$src->registry};	1212	@{$dst->registry} = @{$src->registry};
552		1213
553	%$dst = %$src;	1214	%$dst = %$src;
554		1215
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	1216	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	1217	if exists $src->{_attachment};
557	},	1218	},
558	;	1219	);
		1220
		1221	sub object_freezer_save {
		1222	my ($filename, $rdata, $objs) = @_;
		1223
		1224	sync_job {
		1225	if (length $$rdata) {
		1226	utf8::decode (my $decname = $filename);
		1227	trace sprintf "saving %s (%d,%d)\n",
		1228	$decname, length $$rdata, scalar @$objs
		1229	if $VERBOSE_IO;
		1230
		1231	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1232	aio_chmod $fh, SAVE_MODE;
		1233	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1234	if ($cf::USE_FSYNC) {
		1235	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;
		1236	aio_fsync $fh;
		1237	}
		1238	aio_close $fh;
		1239
		1240	if (@$objs) {
		1241	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1242	aio_chmod $fh, SAVE_MODE;
		1243	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1244	aio_write $fh, 0, (length $data), $data, 0;
		1245	if ($cf::USE_FSYNC) {
		1246	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;
		1247	aio_fsync $fh;
		1248	}
		1249	aio_close $fh;
		1250	aio_rename "$filename.pst~", "$filename.pst";
		1251	}
		1252	} else {
		1253	aio_unlink "$filename.pst";
		1254	}
		1255
		1256	aio_rename "$filename~", $filename;
		1257
		1258	$filename =~ s%/[^/]+$%%;
		1259	aio_pathsync $filename if $cf::USE_FSYNC;
		1260	} else {
		1261	error "unable to save objects: $filename~: $!\n";
		1262	}
		1263	} else {
		1264	aio_unlink $filename;
		1265	aio_unlink "$filename.pst";
		1266	}
		1267	};
		1268	}
		1269
		1270	sub object_freezer_as_string {
		1271	my ($rdata, $objs) = @_;
		1272
		1273	use Data::Dumper;
		1274
		1275	$$rdata . Dumper $objs
		1276	}
		1277
		1278	sub object_thawer_load {
		1279	my ($filename) = @_;
		1280
		1281	my ($data, $av);
		1282
		1283	(aio_load $filename, $data) >= 0
		1284	or return;
		1285
		1286	unless (aio_stat "$filename.pst") {
		1287	(aio_load "$filename.pst", $av) >= 0
		1288	or return;
		1289
		1290	my $st = eval { Coro::Storable::thaw $av };
		1291	$av = $st->{objs};
		1292	}
		1293
		1294	utf8::decode (my $decname = $filename);
		1295	trace sprintf "loading %s (%d,%d)\n",
		1296	$decname, length $data, scalar @{$av || []}
		1297	if $VERBOSE_IO;
		1298
		1299	($data, $av)
		1300	}
		1301
		1302	=head2 COMMAND CALLBACKS
		1303
		1304	=over 4
		1305
		1306	=cut
559		1307
560	#############################################################################	1308	#############################################################################
561	# old plug-in events	1309	# command handling &c
562		1310
563	sub inject_event {	1311	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		1312
567	my $cb = $hook[$event_code]{$extension}	1313	Register a callback for execution when the client sends the user command
568	or return;	1314	$name.
569		1315
570	&$cb	1316	=cut
571	}
572
573	sub inject_global_event {
574	my $event = shift;
575
576	my $cb = $hook[$event]
577	or return;
578
579	List::Util::max map &$_, values %$cb
580	}
581
582	sub inject_command {
583	my ($name, $obj, $params) = @_;
584
585	for my $cmd (@{ $command{$name} }) {
586	$cmd->[1]->($obj, $params);
587	}
588
589	-1
590	}
591		1317
592	sub register_command {	1318	sub register_command {
593	my ($name, $time, $cb) = @_;	1319	my ($name, $cb) = @_;
594		1320
595	my $caller = caller;	1321	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	1322	#warn "registering command '$name/$time' to '$caller'";
597		1323
598	push @{ $command{$name} }, [$time, $cb, $caller];	1324	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	1325	}
		1326
		1327	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1328
		1329	Register a callback for execution when the client sends an (synchronous)
		1330	extcmd packet. Ext commands will be processed in the order they are
		1331	received by the server, like other user commands. The first argument is
		1332	the logged-in player. Ext commands can only be processed after a player
		1333	has logged in successfully.
		1334
		1335	If the callback returns something, it is sent back as if reply was being
		1336	called.
		1337
		1338	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1339
		1340	Register a callback for execution when the client sends an (asynchronous)
		1341	exticmd packet. Exti commands are processed by the server as soon as they
		1342	are received, i.e. out of order w.r.t. other commands. The first argument
		1343	is a client socket. Exti commands can be received anytime, even before
		1344	log-in.
		1345
		1346	If the callback returns something, it is sent back as if reply was being
		1347	called.
		1348
		1349	=cut
601		1350
602	sub register_extcmd {	1351	sub register_extcmd {
603	my ($name, $cb) = @_;	1352	my ($name, $cb) = @_;
604		1353
605	my $caller = caller;	1354	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	1355	}
610		1356
611	sub register {	1357	sub register_exticmd {
612	my ($base, $pkg) = @_;	1358	my ($name, $cb) = @_;
613		1359
614	#TODO	1360	$EXTICMD{$name} = $cb;
615	}	1361	}
616		1362
617	sub load_extension {	1363	use File::Glob ();
618	my ($path) = @_;
619		1364
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1365	cf::player->attach (
621	my $base = $1;	1366	on_unknown_command => sub {
622	my $pkg = $1;	1367	my ($pl, $name, $params) = @_;
623	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";
625		1368
626	warn "loading '$path' into '$pkg'\n";	1369	my $cb = $COMMAND{$name}
		1370	or return;
627		1371
628	open my $fh, "<:utf8", $path	1372	for my $cmd (@$cb) {
629	or die "$path: $!";	1373	$cmd->[1]->($pl->ob, $params);
630
631	my $source =
632	"package $pkg; use strict; use utf8;\n"
633	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })
635	. "\n};\n1";
636
637	eval $source
638	or die "$path: $@";
639
640	push @exts, $pkg;
641	$ext_pkg{$base} = $pkg;
642
643	# no strict 'refs';
644	# @{"$pkg\::ISA"} = ext::;
645
646	register $base, $pkg;
647	}
648
649	sub unload_extension {
650	my ($pkg) = @_;
651
652	warn "removing extension $pkg\n";
653
654	# remove hooks
655	#TODO
656	# for my $idx (0 .. $#PLUGIN_EVENT) {
657	# delete $hook[$idx]{$pkg};
658	# }
659
660	# remove commands
661	for my $name (keys %command) {
662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
663
664	if (@cb) {
665	$command{$name} = \@cb;
666	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
667	} else {
668	delete $command{$name};
669	delete $COMMAND{"$name\000"};
670	}	1374	}
		1375
		1376	cf::override;
671	}	1377	},
672
673	# remove extcmds
674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
675	delete $extcmd{$name};
676	}
677
678	if (my $cb = $pkg->can ("unload")) {
679	eval {
680	$cb->($pkg);
681	1
682	} or warn "$pkg unloaded, but with errors: $@";
683	}
684
685	Symbol::delete_package $pkg;
686	}
687
688	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;
693	eval {
694	load_extension $ext;
695	1
696	} or warn "$ext not loaded: $@";
697	}
698	}
699
700	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703
704	attach_to_players
705	on_extcmd => sub {	1378	on_extcmd => sub {
706	my ($pl, $buf) = @_;	1379	my ($pl, $buf) = @_;
707		1380
708	my $msg = eval { from_json $buf };	1381	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
709		1382
710	if (ref $msg) {	1383	if (ref $msg) {
		1384	my ($type, $reply, @payload) =
		1385	"ARRAY" eq ref $msg
		1386	? @$msg
		1387	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1388
		1389	my @reply;
		1390
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1391	if (my $cb = $EXTCMD{$type}) {
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1392	@reply = $cb->($pl, @payload);
713	$pl->ext_reply ($msg->{msgid}, %reply);	1393	}
		1394
		1395	$pl->ext_reply ($reply, @reply)
		1396	if $reply;
		1397
		1398	} else {
		1399	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1400	}
		1401
		1402	cf::override;
		1403	},
		1404	);
		1405
		1406	# "readahead" all extensions
		1407	sub cache_extensions {
		1408	my $grp = IO::AIO::aio_group;
		1409
		1410	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1411	for (grep /\.ext$/, @{$_[0]}) {
		1412	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1413	}
		1414	};
		1415
		1416	$grp
		1417	}
		1418
		1419	sub load_extensions {
		1420	info "loading extensions...";
		1421
		1422	cf::sync_job {
		1423	my %todo;
		1424
		1425	for my $path (<$LIBDIR/*.ext>) {
		1426	next unless -r $path;
		1427
		1428	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1429	my $base = $1;
		1430	my $pkg = $1;
		1431	$pkg =~ s/[^[:word:]]/_/g;
		1432	$pkg = "ext::$pkg";
		1433
		1434	open my $fh, "<:utf8", $path
		1435	or die "$path: $!";
		1436
		1437	my $source = do { local $/; <$fh> };
		1438
		1439	my %ext = (
		1440	path => $path,
		1441	base => $base,
		1442	pkg => $pkg,
		1443	);
		1444
		1445	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1446	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1447
		1448	$ext{source} =
		1449	"package $pkg; use common::sense;\n"
		1450	. "#line 1 \"$path\"\n{\n"
		1451	. $source
		1452	. "\n};\n1";
		1453
		1454	$todo{$base} = \%ext;
		1455	}
		1456
		1457	my $pass = 0;
		1458	my %done;
		1459	while (%todo) {
		1460	my $progress;
		1461
		1462	++$pass;
		1463
		1464	ext:
		1465	while (my ($k, $v) = each %todo) {
		1466	for (split /,\s*/, $v->{meta}{depends}) {
		1467	next ext
		1468	unless exists $done{$_};
		1469	}
		1470
		1471	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1472
		1473	my $active = eval $v->{source};
		1474
		1475	if (length $@) {
		1476	error "$v->{path}: $@\n";
		1477
		1478	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1479	if exists $v->{meta}{mandatory};
		1480
		1481	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1482	delete $todo{$k};
		1483	} else {
		1484	$done{$k} = delete $todo{$k};
		1485	push @EXTS, $v->{pkg};
		1486	$progress = 1;
		1487
		1488	info "$v->{base}: extension inactive.\n"
		1489	unless $active;
714	}	1490	}
715	}	1491	}
716	} else {	1492
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1493	unless ($progress) {
		1494	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1495
		1496	while (my ($k, $v) = each %todo) {
		1497	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1498	if exists $v->{meta}{mandatory};
		1499	}
718	}	1500	}
719		1501	}
720	cf::override;
721	},	1502	};
722	;	1503	}
723		1504
724	#############################################################################	1505	#############################################################################
725	# load/save/clean perl data associated with a map
726		1506
727	*cf::mapsupport::on_clean = sub {	1507	=back
		1508
		1509	=head2 CORE EXTENSIONS
		1510
		1511	Functions and methods that extend core deliantra objects.
		1512
		1513	=cut
		1514
		1515	package cf::player;
		1516
		1517	use Coro::AIO;
		1518
		1519	=head3 cf::player
		1520
		1521	=over 4
		1522
		1523	=item cf::player::num_playing
		1524
		1525	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1526
		1527	=cut
		1528
		1529	sub num_playing {
		1530	scalar grep
		1531	$_->ob->map
		1532	&& !$_->hidden
		1533	&& !$_->ob->flag (cf::FLAG_WIZ),
		1534	cf::player::list
		1535	}
		1536
		1537	=item cf::player::find $login
		1538
		1539	Returns the given player object, loading it if necessary (might block).
		1540
		1541	=cut
		1542
		1543	sub playerdir($) {
		1544	"$PLAYERDIR/"
		1545	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1546	}
		1547
		1548	sub path($) {
		1549	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1550
		1551	(playerdir $login) . "/playerdata"
		1552	}
		1553
		1554	sub find_active($) {
		1555	$cf::PLAYER{$_[0]}
		1556	and $cf::PLAYER{$_[0]}->active
		1557	and $cf::PLAYER{$_[0]}
		1558	}
		1559
		1560	sub exists($) {
728	my ($map) = @_;	1561	my ($login) = @_;
729		1562
730	my $path = $map->tmpname;	1563	$cf::PLAYER{$login}
731	defined $path or return;	1564	or !aio_stat path $login
732
733	unlink "$path.pst";
734	};
735
736	attach_to_maps prio => -10000, package => cf::mapsupport::;
737
738	#############################################################################
739	# load/save perl data associated with player->ob objects
740
741	sub all_objects(@) {
742	@_, map all_objects ($_->inv), @_
743	}	1565	}
744		1566
745	# TODO: compatibility cruft, remove when no longer needed	1567	sub find($) {
746	attach_to_players	1568	return $cf::PLAYER{$_[0]} || do {
		1569	my $login = $_[0];
		1570
		1571	my $guard = cf::lock_acquire "user_find:$login";
		1572
		1573	$cf::PLAYER{$_[0]} || do {
		1574	# rename old playerfiles to new ones
		1575	#TODO: remove when no longer required
		1576	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1577	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1578	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1579	aio_unlink +(playerdir $login) . "/$login.pl";
		1580
		1581	my $f = new_from_file cf::object::thawer path $login
		1582	or return;
		1583
		1584	my $pl = cf::player::load_pl $f
		1585	or return;
		1586
		1587	local $cf::PLAYER_LOADING{$login} = $pl;
		1588	$f->resolve_delayed_derefs;
		1589	$cf::PLAYER{$login} = $pl
		1590	}
		1591	}
		1592	}
		1593
		1594	cf::player->attach (
747	on_load => sub {	1595	on_load => sub {
748	my ($pl, $path) = @_;	1596	my ($pl, $path) = @_;
749		1597
750	for my $o (all_objects $pl->ob) {	1598	# restore slots saved in save, below
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1599	my $slots = delete $pl->{_slots};
752	$o->set_ob_key_value ("_perl_data");
753		1600
754	%$o = %{ Storable::thaw pack "H*", $value };	1601	$pl->ob->current_weapon ($slots->[0]);
		1602	$pl->combat_ob ($slots->[1]);
		1603	$pl->ranged_ob ($slots->[2]);
		1604	},
		1605	);
		1606
		1607	sub save($) {
		1608	my ($pl) = @_;
		1609
		1610	return if $pl->{deny_save};
		1611
		1612	my $path = path $pl;
		1613	my $guard = cf::lock_acquire "user_save:$path";
		1614
		1615	return if $pl->{deny_save};
		1616
		1617	aio_mkdir playerdir $pl, 0770;
		1618	$pl->{last_save} = $cf::RUNTIME;
		1619
		1620	cf::get_slot 0.01;
		1621
		1622	# save slots, to be restored later
		1623	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1624
		1625	$pl->save_pl ($path);
		1626	cf::cede_to_tick;
		1627	}
		1628
		1629	sub new($) {
		1630	my ($login) = @_;
		1631
		1632	my $self = create;
		1633
		1634	$self->ob->name ($login);
		1635	$self->{deny_save} = 1;
		1636
		1637	$cf::PLAYER{$login} = $self;
		1638
		1639	$self
		1640	}
		1641
		1642	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1643
		1644	=cut
		1645
		1646	sub send_msg {
		1647	my $ns = shift->ns
		1648	or return;
		1649	$ns->send_msg (@_);
		1650	}
		1651
		1652	=item $pl->quit_character
		1653
		1654	Nukes the player without looking back. If logged in, the connection will
		1655	be destroyed. May block for a long time.
		1656
		1657	=cut
		1658
		1659	sub quit_character {
		1660	my ($pl) = @_;
		1661
		1662	my $name = $pl->ob->name;
		1663
		1664	$pl->{deny_save} = 1;
		1665	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1666
		1667	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1668	$pl->deactivate;
		1669
		1670	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1671	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1672	ext::highscore::check ($pl->ob);
		1673
		1674	$pl->ns->destroy if $pl->ns;
		1675
		1676	my $path = playerdir $pl;
		1677	my $temp = "$path~$cf::RUNTIME~deleting~";
		1678	aio_rename $path, $temp;
		1679	delete $cf::PLAYER{$pl->ob->name};
		1680	$pl->destroy;
		1681
		1682	my $prefix = qr<^~\Q$name\E/>;
		1683
		1684	# nuke player maps
		1685	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1686
		1687	IO::AIO::aio_rmtree $temp;
		1688	}
		1689
		1690	=item $pl->kick
		1691
		1692	Kicks a player out of the game. This destroys the connection.
		1693
		1694	=cut
		1695
		1696	sub kick {
		1697	my ($pl, $kicker) = @_;
		1698
		1699	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1700	$pl->killer ("kicked");
		1701	$pl->ns->destroy;
		1702	}
		1703
		1704	=item cf::player::list_logins
		1705
		1706	Returns am arrayref of all valid playernames in the system, can take a
		1707	while and may block, so not sync_job-capable, ever.
		1708
		1709	=cut
		1710
		1711	sub list_logins {
		1712	my $dirs = aio_readdir $PLAYERDIR
		1713	or return [];
		1714
		1715	my @logins;
		1716
		1717	for my $login (@$dirs) {
		1718	my $path = path $login;
		1719
		1720	# a .pst is a dead give-away for a valid player
		1721	# if no pst file found, open and chekc for blocked users
		1722	if (aio_stat "$path.pst") {
		1723	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1724	aio_read $fh, 0, 512, my $buf, 0 or next;
		1725	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1726	}
		1727
		1728	utf8::decode $login;
		1729	push @logins, $login;
		1730	}
		1731
		1732	\@logins
		1733	}
		1734
		1735	=item $player->maps
		1736
		1737	=item cf::player::maps $login
		1738
		1739	Returns an arrayref of map paths that are private for this
		1740	player. May block.
		1741
		1742	=cut
		1743
		1744	sub maps($) {
		1745	my ($pl) = @_;
		1746
		1747	$pl = ref $pl ? $pl->ob->name : $pl;
		1748
		1749	my $files = aio_readdir playerdir $pl
		1750	or return;
		1751
		1752	my @paths;
		1753
		1754	for (@$files) {
		1755	utf8::decode $_;
		1756	next if /\.(?:pl|pst)$/;
		1757	next unless /^$PATH_SEP/o;
		1758
		1759	push @paths, cf::map::normalise "~$pl/$_";
		1760	}
		1761
		1762	\@paths
		1763	}
		1764
		1765	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1766
		1767	Expand deliantra pod fragments into protocol xml.
		1768
		1769	=item $player->ext_reply ($msgid, @msg)
		1770
		1771	Sends an ext reply to the player.
		1772
		1773	=cut
		1774
		1775	sub ext_reply($$@) {
		1776	my ($self, $id, @msg) = @_;
		1777
		1778	$self->ns->ext_reply ($id, @msg)
		1779	}
		1780
		1781	=item $player->ext_msg ($type, @msg)
		1782
		1783	Sends an ext event to the client.
		1784
		1785	=cut
		1786
		1787	sub ext_msg($$@) {
		1788	my ($self, $type, @msg) = @_;
		1789
		1790	$self->ns->ext_msg ($type, @msg);
		1791	}
		1792
		1793	=head3 cf::region
		1794
		1795	=over 4
		1796
		1797	=cut
		1798
		1799	package cf::region;
		1800
		1801	=item cf::region::find_by_path $path
		1802
		1803	Tries to decuce the likely region for a map knowing only its path.
		1804
		1805	=cut
		1806
		1807	sub find_by_path($) {
		1808	my ($path) = @_;
		1809
		1810	$path =~ s/^~[^\/]*//; # skip ~login
		1811
		1812	my ($match, $specificity);
		1813
		1814	for my $region (list) {
		1815	if ($region->{match} && $path =~ $region->{match}) {
		1816	($match, $specificity) = ($region, $region->specificity)
		1817	if $region->specificity > $specificity;
		1818	}
		1819	}
		1820
		1821	$match
		1822	}
		1823
		1824	=back
		1825
		1826	=head3 cf::map
		1827
		1828	=over 4
		1829
		1830	=cut
		1831
		1832	package cf::map;
		1833
		1834	use Fcntl;
		1835	use Coro::AIO;
		1836
		1837	use overload
		1838	'""' => \&as_string,
		1839	fallback => 1;
		1840
		1841	our $MAX_RESET = 3600;
		1842	our $DEFAULT_RESET = 3000;
		1843
		1844	sub generate_random_map {
		1845	my ($self, $rmp) = @_;
		1846
		1847	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1848
		1849	# mit "rum" bekleckern, nicht
		1850	$self->_create_random_map (
		1851	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1852	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle}, $rmp->{miningstyle},
		1853	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1854	$rmp->{exit_on_final_map},
		1855	$rmp->{xsize}, $rmp->{ysize},
		1856	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1857	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1858	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1859	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1860	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1861	(cf::region::find $rmp->{region}), $rmp->{custom}
		1862	)
		1863	}
		1864
		1865	=item cf::map->register ($regex, $prio)
		1866
		1867	Register a handler for the map path matching the given regex at the
		1868	givne priority (higher is better, built-in handlers have priority 0, the
		1869	default).
		1870
		1871	=cut
		1872
		1873	sub register {
		1874	my (undef, $regex, $prio) = @_;
		1875	my $pkg = caller;
		1876
		1877	push @{"$pkg\::ISA"}, __PACKAGE__;
		1878
		1879	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1880	}
		1881
		1882	# also paths starting with '/'
		1883	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1884
		1885	sub thawer_merge {
		1886	my ($self, $merge) = @_;
		1887
		1888	# we have to keep some variables in memory intact
		1889	local $self->{path};
		1890	local $self->{load_path};
		1891
		1892	$self->SUPER::thawer_merge ($merge);
		1893	}
		1894
		1895	sub normalise {
		1896	my ($path, $base) = @_;
		1897
		1898	$path = "$path"; # make sure it's a string
		1899
		1900	$path =~ s/\.map$//;
		1901
		1902	# map plan:
		1903	#
		1904	# /! non-realised random map exit (special hack!)
		1905	# {... are special paths that are not being touched
		1906	# ?xxx/... are special absolute paths
		1907	# ?random/... random maps
		1908	# /... normal maps
		1909	# ~user/... per-player map of a specific user
		1910
		1911	$path =~ s/$PATH_SEP/\//go;
		1912
		1913	# treat it as relative path if it starts with
		1914	# something that looks reasonable
		1915	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1916	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1917
		1918	$base =~ s{[^/]+/?$}{};
		1919	$path = "$base/$path";
		1920	}
		1921
		1922	for ($path) {
		1923	redo if s{//}{/};
		1924	redo if s{/\.?/}{/};
		1925	redo if s{/[^/]+/\.\./}{/};
		1926	}
		1927
		1928	$path
		1929	}
		1930
		1931	sub new_from_path {
		1932	my (undef, $path, $base) = @_;
		1933
		1934	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1935
		1936	$path = normalise $path, $base;
		1937
		1938	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1939	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1940	my $self = bless cf::map::new, $pkg;
		1941	$self->{path} = $path; $self->path ($path);
		1942	$self->init; # pass $1 etc.
		1943	return $self;
		1944	}
		1945	}
		1946
		1947	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1948	()
		1949	}
		1950
		1951	sub init {
		1952	my ($self) = @_;
		1953
		1954	$self
		1955	}
		1956
		1957	sub as_string {
		1958	my ($self) = @_;
		1959
		1960	"$self->{path}"
		1961	}
		1962
		1963	# the displayed name, this is a one way mapping
		1964	sub visible_name {
		1965	&as_string
		1966	}
		1967
		1968	# the original (read-only) location
		1969	sub load_path {
		1970	my ($self) = @_;
		1971
		1972	"$MAPDIR/$self->{path}.map"
		1973	}
		1974
		1975	# the temporary/swap location
		1976	sub save_path {
		1977	my ($self) = @_;
		1978
		1979	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1980	"$TMPDIR/$path.map"
		1981	}
		1982
		1983	# the unique path, undef == no special unique path
		1984	sub uniq_path {
		1985	my ($self) = @_;
		1986
		1987	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1988	"$UNIQUEDIR/$path"
		1989	}
		1990
		1991	sub decay_objects {
		1992	my ($self) = @_;
		1993
		1994	return if $self->{deny_reset};
		1995
		1996	$self->do_decay_objects;
		1997	}
		1998
		1999	sub unlink_save {
		2000	my ($self) = @_;
		2001
		2002	utf8::encode (my $save = $self->save_path);
		2003	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2004	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2005	}
		2006
		2007	sub load_header_from($) {
		2008	my ($self, $path) = @_;
		2009
		2010	utf8::encode $path;
		2011	my $f = new_from_file cf::object::thawer $path
		2012	or return;
		2013
		2014	$self->_load_header ($f)
		2015	or return;
		2016
		2017	local $MAP_LOADING{$self->{path}} = $self;
		2018	$f->resolve_delayed_derefs;
		2019
		2020	$self->{load_path} = $path;
		2021
		2022	1
		2023	}
		2024
		2025	sub load_header_orig {
		2026	my ($self) = @_;
		2027
		2028	$self->load_header_from ($self->load_path)
		2029	}
		2030
		2031	sub load_header_temp {
		2032	my ($self) = @_;
		2033
		2034	$self->load_header_from ($self->save_path)
		2035	}
		2036
		2037	sub prepare_temp {
		2038	my ($self) = @_;
		2039
		2040	$self->last_access ((delete $self->{last_access})
		2041	|| $cf::RUNTIME); #d#
		2042	# safety
		2043	$self->{instantiate_time} = $cf::RUNTIME
		2044	if $self->{instantiate_time} > $cf::RUNTIME;
		2045	}
		2046
		2047	sub prepare_orig {
		2048	my ($self) = @_;
		2049
		2050	$self->{load_original} = 1;
		2051	$self->{instantiate_time} = $cf::RUNTIME;
		2052	$self->last_access ($cf::RUNTIME);
		2053	$self->instantiate;
		2054	}
		2055
		2056	sub load_header {
		2057	my ($self) = @_;
		2058
		2059	if ($self->load_header_temp) {
		2060	$self->prepare_temp;
		2061	} else {
		2062	$self->load_header_orig
		2063	or return;
		2064	$self->prepare_orig;
		2065	}
		2066
		2067	$self->{deny_reset} = 1
		2068	if $self->no_reset;
		2069
		2070	$self->default_region (cf::region::find_by_path $self->{path})
		2071	unless $self->default_region;
		2072
		2073	1
		2074	}
		2075
		2076	sub find;
		2077	sub find {
		2078	my ($path, $origin) = @_;
		2079
		2080	cf::cede_to_tick;
		2081
		2082	$path = normalise $path, $origin && $origin->path;
		2083
		2084	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2085	my $guard2 = cf::lock_acquire "map_find:$path";
		2086
		2087	$cf::MAP{$path} || do {
		2088	my $map = new_from_path cf::map $path
		2089	or return;
		2090
		2091	$map->{last_save} = $cf::RUNTIME;
		2092
		2093	$map->load_header
		2094	or return;
		2095
		2096	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2097	# doing this can freeze the server in a sync job, obviously
		2098	#$cf::WAIT_FOR_TICK->wait;
		2099	undef $guard2;
		2100	undef $guard1;
		2101	$map->reset;
		2102	return find $path;
		2103	}
		2104
		2105	$cf::MAP{$path} = $map
		2106	}
		2107	}
		2108
		2109	sub pre_load { }
		2110	#sub post_load { } # XS
		2111
		2112	sub load {
		2113	my ($self) = @_;
		2114
		2115	local $self->{deny_reset} = 1; # loading can take a long time
		2116
		2117	my $path = $self->{path};
		2118
		2119	{
		2120	my $guard = cf::lock_acquire "map_data:$path";
		2121
		2122	return unless $self->valid;
		2123	return unless $self->in_memory == cf::MAP_SWAPPED;
		2124
		2125	$self->in_memory (cf::MAP_LOADING);
		2126
		2127	$self->alloc;
		2128
		2129	$self->pre_load;
		2130	cf::cede_to_tick;
		2131
		2132	my $f = new_from_file cf::object::thawer $self->{load_path};
		2133	$f->skip_block;
		2134	$self->_load_objects ($f)
		2135	or return;
		2136
		2137	$self->post_load_original
		2138	if delete $self->{load_original};
		2139
		2140	if (my $uniq = $self->uniq_path) {
		2141	utf8::encode $uniq;
		2142	unless (aio_stat $uniq) {
		2143	if (my $f = new_from_file cf::object::thawer $uniq) {
		2144	$self->clear_unique_items;
		2145	$self->_load_objects ($f);
		2146	$f->resolve_delayed_derefs;
		2147	}
755	}	2148	}
756	}	2149	}
		2150
		2151	$f->resolve_delayed_derefs;
		2152
		2153	cf::cede_to_tick;
		2154	# now do the right thing for maps
		2155	$self->link_multipart_objects;
		2156	$self->difficulty ($self->estimate_difficulty)
		2157	unless $self->difficulty;
		2158	cf::cede_to_tick;
		2159
		2160	unless ($self->{deny_activate}) {
		2161	$self->decay_objects;
		2162	$self->fix_auto_apply;
		2163	$self->update_buttons;
		2164	cf::cede_to_tick;
		2165	$self->activate;
		2166	}
		2167
		2168	$self->{last_save} = $cf::RUNTIME;
		2169	$self->last_access ($cf::RUNTIME);
		2170
		2171	$self->in_memory (cf::MAP_ACTIVE);
757	},	2172	}
758	;
759		2173
760	#############################################################################	2174	$self->post_load;
		2175	}
761		2176
762	=head2 CORE EXTENSIONS	2177	# customize the map for a given player, i.e.
		2178	# return the _real_ map. used by e.g. per-player
		2179	# maps to change the path to ~playername/mappath
		2180	sub customise_for {
		2181	my ($self, $ob) = @_;
763		2182
764	Functions and methods that extend core crossfire objects.	2183	return find "~" . $ob->name . "/" . $self->{path}
		2184	if $self->per_player;
		2185
		2186	# return find "?party/" . $ob->name . "/" . $self->{path}
		2187	# if $self->per_party;
		2188
		2189	$self
		2190	}
		2191
		2192	# find and load all maps in the 3x3 area around a map
		2193	sub load_neighbours {
		2194	my ($map) = @_;
		2195
		2196	my @neigh; # diagonal neighbours
		2197
		2198	for (0 .. 3) {
		2199	my $neigh = $map->tile_path ($_)
		2200	or next;
		2201	$neigh = find $neigh, $map
		2202	or next;
		2203	$neigh->load;
		2204
		2205	# now find the diagonal neighbours
		2206	push @neigh,
		2207	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2208	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2209	}
		2210
		2211	for (grep defined $_->[0], @neigh) {
		2212	my ($path, $origin) = @$_;
		2213	my $neigh = find $path, $origin
		2214	or next;
		2215	$neigh->load;
		2216	}
		2217	}
		2218
		2219	sub find_sync {
		2220	my ($path, $origin) = @_;
		2221
		2222	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2223	if $Coro::current == $Coro::main;
		2224
		2225	find $path, $origin
		2226	}
		2227
		2228	sub do_load_sync {
		2229	my ($map) = @_;
		2230
		2231	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2232	if $Coro::current == $Coro::main;
		2233
		2234	$map->load;
		2235	}
		2236
		2237	our %MAP_PREFETCH;
		2238	our $MAP_PREFETCHER = undef;
		2239
		2240	sub find_async {
		2241	my ($path, $origin, $load) = @_;
		2242
		2243	$path = normalise $path, $origin && $origin->{path};
		2244
		2245	if (my $map = $cf::MAP{$path}) {
		2246	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2247	}
		2248
		2249	$MAP_PREFETCH{$path} |= $load;
		2250
		2251	$MAP_PREFETCHER ||= cf::async {
		2252	$Coro::current->{desc} = "map prefetcher";
		2253
		2254	while (%MAP_PREFETCH) {
		2255	while (my ($k, $v) = each %MAP_PREFETCH) {
		2256	if (my $map = find $k) {
		2257	$map->load if $v;
		2258	}
		2259
		2260	delete $MAP_PREFETCH{$k};
		2261	}
		2262	}
		2263	undef $MAP_PREFETCHER;
		2264	};
		2265	$MAP_PREFETCHER->prio (6);
		2266
		2267	()
		2268	}
		2269
		2270	# common code, used by both ->save and ->swapout
		2271	sub _save {
		2272	my ($self) = @_;
		2273
		2274	$self->{last_save} = $cf::RUNTIME;
		2275
		2276	return unless $self->dirty;
		2277
		2278	my $save = $self->save_path; utf8::encode $save;
		2279	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2280
		2281	$self->{load_path} = $save;
		2282
		2283	return if $self->{deny_save};
		2284
		2285	local $self->{last_access} = $self->last_access;#d#
		2286
		2287	cf::async {
		2288	$Coro::current->{desc} = "map player save";
		2289	$_->contr->save for $self->players;
		2290	};
		2291
		2292	cf::get_slot 0.02;
		2293
		2294	if ($uniq) {
		2295	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2296	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2297	} else {
		2298	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2299	}
		2300	}
		2301
		2302	sub save {
		2303	my ($self) = @_;
		2304
		2305	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2306
		2307	$self->_save;
		2308	}
		2309
		2310	sub swap_out {
		2311	my ($self) = @_;
		2312
		2313	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2314
		2315	return if $self->in_memory != cf::MAP_ACTIVE;
		2316	return if $self->{deny_save};
		2317	return if $self->players;
		2318
		2319	# first deactivate the map and "unlink" it from the core
		2320	$self->deactivate;
		2321	$_->clear_links_to ($self) for values %cf::MAP;
		2322	$self->in_memory (cf::MAP_SWAPPED);
		2323
		2324	# then atomically save
		2325	$self->_save;
		2326
		2327	# then free the map
		2328	$self->clear;
		2329	}
		2330
		2331	sub reset_at {
		2332	my ($self) = @_;
		2333
		2334	# TODO: safety, remove and allow resettable per-player maps
		2335	return 1e99 if $self->{deny_reset};
		2336
		2337	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2338	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2339
		2340	$time + $to
		2341	}
		2342
		2343	sub should_reset {
		2344	my ($self) = @_;
		2345
		2346	$self->reset_at <= $cf::RUNTIME
		2347	}
		2348
		2349	sub reset {
		2350	my ($self) = @_;
		2351
		2352	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2353
		2354	return if $self->players;
		2355
		2356	cf::trace "resetting map ", $self->path, "\n";
		2357
		2358	$self->in_memory (cf::MAP_SWAPPED);
		2359
		2360	# need to save uniques path
		2361	unless ($self->{deny_save}) {
		2362	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2363
		2364	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2365	if $uniq;
		2366	}
		2367
		2368	delete $cf::MAP{$self->path};
		2369
		2370	$self->deactivate;
		2371	$_->clear_links_to ($self) for values %cf::MAP;
		2372	$self->clear;
		2373
		2374	$self->unlink_save;
		2375	$self->destroy;
		2376	}
		2377
		2378	my $nuke_counter = "aaaa";
		2379
		2380	sub nuke {
		2381	my ($self) = @_;
		2382
		2383	{
		2384	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2385
		2386	delete $cf::MAP{$self->path};
		2387
		2388	$self->unlink_save;
		2389
		2390	bless $self, "cf::map::wrap";
		2391	delete $self->{deny_reset};
		2392	$self->{deny_save} = 1;
		2393	$self->reset_timeout (1);
		2394	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2395
		2396	$cf::MAP{$self->path} = $self;
		2397	}
		2398
		2399	$self->reset; # polite request, might not happen
		2400	}
		2401
		2402	=item $maps = cf::map::tmp_maps
		2403
		2404	Returns an arrayref with all map paths of currently instantiated and saved
		2405	maps. May block.
		2406
		2407	=cut
		2408
		2409	sub tmp_maps() {
		2410	[
		2411	map {
		2412	utf8::decode $_;
		2413	/\.map$/
		2414	? normalise $_
		2415	: ()
		2416	} @{ aio_readdir $TMPDIR or [] }
		2417	]
		2418	}
		2419
		2420	=item $maps = cf::map::random_maps
		2421
		2422	Returns an arrayref with all map paths of currently instantiated and saved
		2423	random maps. May block.
		2424
		2425	=cut
		2426
		2427	sub random_maps() {
		2428	[
		2429	map {
		2430	utf8::decode $_;
		2431	/\.map$/
		2432	? normalise "?random/$_"
		2433	: ()
		2434	} @{ aio_readdir $RANDOMDIR or [] }
		2435	]
		2436	}
		2437
		2438	=item cf::map::unique_maps
		2439
		2440	Returns an arrayref of paths of all shared maps that have
		2441	instantiated unique items. May block.
		2442
		2443	=cut
		2444
		2445	sub unique_maps() {
		2446	[
		2447	map {
		2448	utf8::decode $_;
		2449	s/\.map$//; # TODO future compatibility hack
		2450	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2451	? ()
		2452	: normalise $_
		2453	} @{ aio_readdir $UNIQUEDIR or [] }
		2454	]
		2455	}
		2456
		2457	=item cf::map::static_maps
		2458
		2459	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2460	file in the shared directory excluding F</styles> and F</editor>). May
		2461	block.
		2462
		2463	=cut
		2464
		2465	sub static_maps() {
		2466	my @dirs = "";
		2467	my @maps;
		2468
		2469	while (@dirs) {
		2470	my $dir = shift @dirs;
		2471
		2472	next if $dir eq "/styles" || $dir eq "/editor";
		2473
		2474	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2475	or return;
		2476
		2477	for (@$files) {
		2478	s/\.map$// or next;
		2479	utf8::decode $_;
		2480	push @maps, "$dir/$_";
		2481	}
		2482
		2483	push @dirs, map "$dir/$_", @$dirs;
		2484	}
		2485
		2486	\@maps
		2487	}
		2488
		2489	=back
		2490
		2491	=head3 cf::object
		2492
		2493	=cut
		2494
		2495	package cf::object;
765		2496
766	=over 4	2497	=over 4
767		2498
768	=item cf::player::exists $login	2499	=item $ob->inv_recursive
769		2500
770	Returns true when the given account exists.	2501	Returns the inventory of the object I<and> their inventories, recursively,
		2502	but I<not> the object itself.
771		2503
772	=cut	2504	=cut
773		2505
774	sub cf::player::exists($) {	2506	sub inv_recursive_;
775	cf::player::find $_[0]	2507	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2508	map { $_, inv_recursive_ $_->inv } @_
777	}	2509	}
778		2510
		2511	sub inv_recursive {
		2512	inv_recursive_ inv $_[0]
		2513	}
		2514
		2515	=item $ref = $ob->ref
		2516
		2517	Creates and returns a persistent reference to an object that can be stored as a string.
		2518
		2519	=item $ob = cf::object::deref ($refstring)
		2520
		2521	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2522	even if the object actually exists. May block.
		2523
		2524	=cut
		2525
		2526	sub deref {
		2527	my ($ref) = @_;
		2528
		2529	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2530	my ($uuid, $name) = ($1, $2);
		2531	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2532	or return;
		2533	$pl->ob->uuid eq $uuid
		2534	or return;
		2535
		2536	$pl->ob
		2537	} else {
		2538	warn "$ref: cannot resolve object reference\n";
		2539	undef
		2540	}
		2541	}
		2542
		2543	package cf;
		2544
		2545	=back
		2546
		2547	=head3 cf::object::player
		2548
		2549	=over 4
		2550
779	=item $object->reply ($npc, $msg[, $flags])	2551	=item $player_object->reply ($npc, $msg[, $flags])
780		2552
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2553	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	2554	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	2555	dialogue with the given NPC character.
784		2556
785	=cut	2557	=cut
786		2558
		2559	our $SAY_CHANNEL = {
		2560	id => "say",
		2561	title => "Map",
		2562	reply => "say ",
		2563	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2564	};
		2565
		2566	our $CHAT_CHANNEL = {
		2567	id => "chat",
		2568	title => "Chat",
		2569	reply => "chat ",
		2570	tooltip => "Player chat and shouts, global to the server.",
		2571	};
		2572
787	# rough implementation of a future "reply" method that works	2573	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	2574	# with dialog boxes.
		2575	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	2576	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	2577	my ($self, $npc, $msg, $flags) = @_;
791		2578
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2579	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		2580
794	if ($self->{record_replies}) {	2581	if ($self->{record_replies}) {
795	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2582	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2583
796	} else {	2584	} else {
		2585	my $pl = $self->contr;
		2586
		2587	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2588	my $dialog = $pl->{npc_dialog};
		2589	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2590
		2591	} else {
797	$msg = $npc->name . " says: $msg" if $npc;	2592	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	2593	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2594	}
		2595	}
		2596	}
		2597
		2598	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2599
		2600	=cut
		2601
		2602	sub cf::object::send_msg {
		2603	my $pl = shift->contr
		2604	or return;
		2605	$pl->send_msg (@_);
		2606	}
		2607
		2608	=item $player_object->may ("access")
		2609
		2610	Returns wether the given player is authorized to access resource "access"
		2611	(e.g. "command_wizcast").
		2612
		2613	=cut
		2614
		2615	sub cf::object::player::may {
		2616	my ($self, $access) = @_;
		2617
		2618	$self->flag (cf::FLAG_WIZ) ||
		2619	(ref $cf::CFG{"may_$access"}
		2620	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2621	: $cf::CFG{"may_$access"})
		2622	}
		2623
		2624	=item $player_object->enter_link
		2625
		2626	Freezes the player and moves him/her to a special map (C<{link}>).
		2627
		2628	The player should be reasonably safe there for short amounts of time (e.g.
		2629	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2630	though, as the player cannot control the character while it is on the link
		2631	map.
		2632
		2633	Will never block.
		2634
		2635	=item $player_object->leave_link ($map, $x, $y)
		2636
		2637	Moves the player out of the special C<{link}> map onto the specified
		2638	map. If the map is not valid (or omitted), the player will be moved back
		2639	to the location he/she was before the call to C<enter_link>, or, if that
		2640	fails, to the emergency map position.
		2641
		2642	Might block.
		2643
		2644	=cut
		2645
		2646	sub link_map {
		2647	unless ($LINK_MAP) {
		2648	$LINK_MAP = cf::map::find "{link}"
		2649	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2650	$LINK_MAP->load;
		2651	}
		2652
		2653	$LINK_MAP
		2654	}
		2655
		2656	sub cf::object::player::enter_link {
		2657	my ($self) = @_;
		2658
		2659	$self->deactivate_recursive;
		2660
		2661	++$self->{_link_recursion};
		2662
		2663	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2664
		2665	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2666	if $self->map && $self->map->{path} ne "{link}";
		2667
		2668	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2669	}
		2670
		2671	sub cf::object::player::leave_link {
		2672	my ($self, $map, $x, $y) = @_;
		2673
		2674	return unless $self->contr->active;
		2675
		2676	my $link_pos = delete $self->{_link_pos};
		2677
		2678	unless ($map) {
		2679	# restore original map position
		2680	($map, $x, $y) = @{ $link_pos || [] };
		2681	$map = cf::map::find $map;
		2682
		2683	unless ($map) {
		2684	($map, $x, $y) = @$EMERGENCY_POSITION;
		2685	$map = cf::map::find $map
		2686	or die "FATAL: cannot load emergency map\n";
		2687	}
		2688	}
		2689
		2690	($x, $y) = (-1, -1)
		2691	unless (defined $x) && (defined $y);
		2692
		2693	# use -1 or undef as default coordinates, not 0, 0
		2694	($x, $y) = ($map->enter_x, $map->enter_y)
		2695	if $x <= 0 && $y <= 0;
		2696
		2697	$map->load;
		2698	$map->load_neighbours;
		2699
		2700	return unless $self->contr->active;
		2701
		2702	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2703	if ($self->enter_map ($map, $x, $y)) {
		2704	# entering was successful
		2705	delete $self->{_link_recursion};
		2706	# only activate afterwards, to support waiting in hooks
		2707	$self->activate_recursive;
		2708	}
		2709
		2710	}
		2711
		2712	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2713
		2714	Moves the player to the given map-path and coordinates by first freezing
		2715	her, loading and preparing them map, calling the provided $check callback
		2716	that has to return the map if sucecssful, and then unfreezes the player on
		2717	the new (success) or old (failed) map position. In either case, $done will
		2718	be called at the end of this process.
		2719
		2720	Note that $check will be called with a potentially non-loaded map, so if
		2721	it needs a loaded map it has to call C<< ->load >>.
		2722
		2723	=cut
		2724
		2725	our $GOTOGEN;
		2726
		2727	sub cf::object::player::goto {
		2728	my ($self, $path, $x, $y, $check, $done) = @_;
		2729
		2730	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2731	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2732	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2733	($path, $x, $y) = @$EMERGENCY_POSITION;
		2734	}
		2735
		2736	# do generation counting so two concurrent goto's will be executed in-order
		2737	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2738
		2739	$self->enter_link;
		2740
		2741	(async {
		2742	$Coro::current->{desc} = "player::goto $path $x $y";
		2743
		2744	# *tag paths override both path and x|y
		2745	if ($path =~ /^\*(.*)$/) {
		2746	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2747	my $ob = $obs[rand @obs];
		2748
		2749	# see if we actually can go there
		2750	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2751	$ob = $obs[rand @obs];
		2752	} else {
		2753	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2754	}
		2755	# else put us there anyways for now #d#
		2756
		2757	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2758	} else {
		2759	($path, $x, $y) = (undef, undef, undef);
		2760	}
		2761	}
		2762
		2763	my $map = eval {
		2764	my $map = defined $path ? cf::map::find $path : undef;
		2765
		2766	if ($map) {
		2767	$map = $map->customise_for ($self);
		2768	$map = $check->($map, $x, $y, $self) if $check && $map;
		2769	} else {
		2770	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2771	}
		2772
		2773	$map
		2774	};
		2775
		2776	if ($@) {
		2777	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2778	LOG llevError | logBacktrace, Carp::longmess $@;
		2779	}
		2780
		2781	if ($gen == $self->{_goto_generation}) {
		2782	delete $self->{_goto_generation};
		2783	$self->leave_link ($map, $x, $y);
		2784	}
		2785
		2786	$done->($self) if $done;
		2787	})->prio (1);
		2788	}
		2789
		2790	=item $player_object->enter_exit ($exit_object)
		2791
		2792	=cut
		2793
		2794	sub parse_random_map_params {
		2795	my ($spec) = @_;
		2796
		2797	my $rmp = { # defaults
		2798	xsize => (cf::rndm 15, 40),
		2799	ysize => (cf::rndm 15, 40),
		2800	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2801	#layout => string,
799	}	2802	};
800	}
801		2803
		2804	for (split /\n/, $spec) {
		2805	my ($k, $v) = split /\s+/, $_, 2;
		2806
		2807	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2808	}
		2809
		2810	$rmp
		2811	}
		2812
		2813	sub prepare_random_map {
		2814	my ($exit) = @_;
		2815
		2816	# all this does is basically replace the /! path by
		2817	# a new random map path (?random/...) with a seed
		2818	# that depends on the exit object
		2819
		2820	my $rmp = parse_random_map_params $exit->msg;
		2821
		2822	if ($exit->map) {
		2823	$rmp->{region} = $exit->region->name;
		2824	$rmp->{origin_map} = $exit->map->path;
		2825	$rmp->{origin_x} = $exit->x;
		2826	$rmp->{origin_y} = $exit->y;
		2827
		2828	$exit->map->touch;
		2829	}
		2830
		2831	$rmp->{random_seed} ||= $exit->random_seed;
		2832
		2833	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2834	my $md5 = Digest::MD5::md5_hex $data;
		2835	my $meta = "$RANDOMDIR/$md5.meta";
		2836
		2837	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2838	aio_write $fh, 0, (length $data), $data, 0;
		2839	undef $fh;
		2840	aio_rename "$meta~", $meta;
		2841
		2842	my $slaying = "?random/$md5";
		2843
		2844	if ($exit->valid) {
		2845	$exit->slaying ("?random/$md5");
		2846	$exit->msg (undef);
		2847	}
		2848	}
		2849	}
		2850
		2851	sub cf::object::player::enter_exit {
		2852	my ($self, $exit) = @_;
		2853
		2854	return unless $self->type == cf::PLAYER;
		2855
		2856	$self->enter_link;
		2857
		2858	(async {
		2859	$Coro::current->{desc} = "enter_exit";
		2860
		2861	unless (eval {
		2862	$self->deactivate_recursive; # just to be sure
		2863
		2864	# random map handling
		2865	{
		2866	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2867
		2868	prepare_random_map $exit
		2869	if $exit->slaying eq "/!";
		2870	}
		2871
		2872	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2873	my $x = $exit->stats->hp;
		2874	my $y = $exit->stats->sp;
		2875
		2876	$self->goto ($map, $x, $y);
		2877
		2878	# if exit is damned, update players death & WoR home-position
		2879	$self->contr->savebed ($map, $x, $y)
		2880	if $exit->flag (cf::FLAG_DAMNED);
		2881
		2882	1
		2883	}) {
		2884	$self->message ("Something went wrong deep within the deliantra server. "
		2885	. "I'll try to bring you back to the map you were before. "
		2886	. "Please report this to the dungeon master!",
		2887	cf::NDI_UNIQUE | cf::NDI_RED);
		2888
		2889	error "ERROR in enter_exit: $@";
		2890	$self->leave_link;
		2891	}
		2892	})->prio (1);
		2893	}
		2894
		2895	=head3 cf::client
		2896
		2897	=over 4
		2898
		2899	=item $client->send_drawinfo ($text, $flags)
		2900
		2901	Sends a drawinfo packet to the client. Circumvents output buffering so
		2902	should not be used under normal circumstances.
		2903
		2904	=cut
		2905
		2906	sub cf::client::send_drawinfo {
		2907	my ($self, $text, $flags) = @_;
		2908
		2909	utf8::encode $text;
		2910	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2911	}
		2912
		2913	=item $client->send_big_packet ($pkt)
		2914
		2915	Like C<send_packet>, but tries to compress large packets, and fragments
		2916	them as required.
		2917
		2918	=cut
		2919
		2920	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2921
		2922	sub cf::client::send_big_packet {
		2923	my ($self, $pkt) = @_;
		2924
		2925	# try lzf for large packets
		2926	$pkt = "lzf " . Compress::LZF::compress $pkt
		2927	if 1024 <= length $pkt and $self->{can_lzf};
		2928
		2929	# split very large packets
		2930	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2931	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2932	$pkt = "frag";
		2933	}
		2934
		2935	$self->send_packet ($pkt);
		2936	}
		2937
		2938	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2939
		2940	Send a drawinfo or msg packet to the client, formatting the msg for the
		2941	client if neccessary. C<$type> should be a string identifying the type of
		2942	the message, with C<log> being the default. If C<$color> is negative, suppress
		2943	the message unless the client supports the msg packet.
		2944
		2945	=cut
		2946
		2947	# non-persistent channels (usually the info channel)
		2948	our %CHANNEL = (
		2949	"c/motd" => {
		2950	id => "infobox",
		2951	title => "MOTD",
		2952	reply => undef,
		2953	tooltip => "The message of the day",
		2954	},
		2955	"c/identify" => {
		2956	id => "infobox",
		2957	title => "Identify",
		2958	reply => undef,
		2959	tooltip => "Items recently identified",
		2960	},
		2961	"c/examine" => {
		2962	id => "infobox",
		2963	title => "Examine",
		2964	reply => undef,
		2965	tooltip => "Signs and other items you examined",
		2966	},
		2967	"c/shopinfo" => {
		2968	id => "infobox",
		2969	title => "Shop Info",
		2970	reply => undef,
		2971	tooltip => "What your bargaining skill tells you about the shop",
		2972	},
		2973	"c/book" => {
		2974	id => "infobox",
		2975	title => "Book",
		2976	reply => undef,
		2977	tooltip => "The contents of a note or book",
		2978	},
		2979	"c/lookat" => {
		2980	id => "infobox",
		2981	title => "Look",
		2982	reply => undef,
		2983	tooltip => "What you saw there",
		2984	},
		2985	"c/who" => {
		2986	id => "infobox",
		2987	title => "Players",
		2988	reply => undef,
		2989	tooltip => "Shows players who are currently online",
		2990	},
		2991	"c/body" => {
		2992	id => "infobox",
		2993	title => "Body Parts",
		2994	reply => undef,
		2995	tooltip => "Shows which body parts you posess and are available",
		2996	},
		2997	"c/statistics" => {
		2998	id => "infobox",
		2999	title => "Statistics",
		3000	reply => undef,
		3001	tooltip => "Shows your primary statistics",
		3002	},
		3003	"c/skills" => {
		3004	id => "infobox",
		3005	title => "Skills",
		3006	reply => undef,
		3007	tooltip => "Shows your experience per skill and item power",
		3008	},
		3009	"c/shopitems" => {
		3010	id => "infobox",
		3011	title => "Shop Items",
		3012	reply => undef,
		3013	tooltip => "Shows the items currently for sale in this shop",
		3014	},
		3015	"c/resistances" => {
		3016	id => "infobox",
		3017	title => "Resistances",
		3018	reply => undef,
		3019	tooltip => "Shows your resistances",
		3020	},
		3021	"c/pets" => {
		3022	id => "infobox",
		3023	title => "Pets",
		3024	reply => undef,
		3025	tooltip => "Shows information abotu your pets/a specific pet",
		3026	},
		3027	"c/perceiveself" => {
		3028	id => "infobox",
		3029	title => "Perceive Self",
		3030	reply => undef,
		3031	tooltip => "You gained detailed knowledge about yourself",
		3032	},
		3033	"c/uptime" => {
		3034	id => "infobox",
		3035	title => "Uptime",
		3036	reply => undef,
		3037	tooltip => "How long the server has been running since last restart",
		3038	},
		3039	"c/mapinfo" => {
		3040	id => "infobox",
		3041	title => "Map Info",
		3042	reply => undef,
		3043	tooltip => "Information related to the maps",
		3044	},
		3045	"c/party" => {
		3046	id => "party",
		3047	title => "Party",
		3048	reply => "gsay ",
		3049	tooltip => "Messages and chat related to your party",
		3050	},
		3051	"c/death" => {
		3052	id => "death",
		3053	title => "Death",
		3054	reply => undef,
		3055	tooltip => "Reason for and more info about your most recent death",
		3056	},
		3057	"c/say" => $SAY_CHANNEL,
		3058	"c/chat" => $CHAT_CHANNEL,
		3059	);
		3060
		3061	sub cf::client::send_msg {
		3062	my ($self, $channel, $msg, $color, @extra) = @_;
		3063
		3064	$msg = $self->pl->expand_cfpod ($msg)
		3065	unless $color & cf::NDI_VERBATIM;
		3066
		3067	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3068
		3069	# check predefined channels, for the benefit of C
		3070	if ($CHANNEL{$channel}) {
		3071	$channel = $CHANNEL{$channel};
		3072
		3073	$self->ext_msg (channel_info => $channel);
		3074	$channel = $channel->{id};
		3075
		3076	} elsif (ref $channel) {
		3077	# send meta info to client, if not yet sent
		3078	unless (exists $self->{channel}{$channel->{id}}) {
		3079	$self->{channel}{$channel->{id}} = $channel;
		3080	$self->ext_msg (channel_info => $channel);
		3081	}
		3082
		3083	$channel = $channel->{id};
		3084	}
		3085
		3086	return unless @extra || length $msg;
		3087
		3088	# default colour, mask it out
		3089	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3090	if $color & cf::NDI_DEF;
		3091
		3092	my $pkt = "msg "
		3093	. $self->{json_coder}->encode (
		3094	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3095	);
		3096
		3097	$self->send_big_packet ($pkt);
		3098	}
		3099
		3100	=item $client->ext_msg ($type, @msg)
		3101
		3102	Sends an ext event to the client.
		3103
		3104	=cut
		3105
		3106	sub cf::client::ext_msg($$@) {
		3107	my ($self, $type, @msg) = @_;
		3108
		3109	if ($self->extcmd == 2) {
		3110	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3111	} elsif ($self->extcmd == 1) { # TODO: remove
		3112	push @msg, msgtype => "event_$type";
		3113	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3114	}
		3115	}
		3116
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	3117	=item $client->ext_reply ($msgid, @msg)
803		3118
804	Sends an ext reply to the player.	3119	Sends an ext reply to the client.
805		3120
806	=cut	3121	=cut
807		3122
808	sub cf::player::ext_reply($$$%) {	3123	sub cf::client::ext_reply($$@) {
809	my ($self, $id, %msg) = @_;	3124	my ($self, $id, @msg) = @_;
810		3125
811	$msg{msgid} = $id;	3126	if ($self->extcmd == 2) {
812		3127	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
813	$self->send ("ext " . to_json \%msg);	3128	} elsif ($self->extcmd == 1) {
		3129	#TODO: version 1, remove
		3130	unshift @msg, msgtype => "reply", msgid => $id;
		3131	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3132	}
814	}	3133	}
		3134
		3135	=item $success = $client->query ($flags, "text", \&cb)
		3136
		3137	Queues a query to the client, calling the given callback with
		3138	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3139	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3140
		3141	Queries can fail, so check the return code. Or don't, as queries will
		3142	become reliable at some point in the future.
		3143
		3144	=cut
		3145
		3146	sub cf::client::query {
		3147	my ($self, $flags, $text, $cb) = @_;
		3148
		3149	return unless $self->state == ST_PLAYING
		3150	|| $self->state == ST_SETUP
		3151	|| $self->state == ST_CUSTOM;
		3152
		3153	$self->state (ST_CUSTOM);
		3154
		3155	utf8::encode $text;
		3156	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3157
		3158	$self->send_packet ($self->{query_queue}[0][0])
		3159	if @{ $self->{query_queue} } == 1;
		3160
		3161	1
		3162	}
		3163
		3164	cf::client->attach (
		3165	on_connect => sub {
		3166	my ($ns) = @_;
		3167
		3168	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3169	},
		3170	on_reply => sub {
		3171	my ($ns, $msg) = @_;
		3172
		3173	# this weird shuffling is so that direct followup queries
		3174	# get handled first
		3175	my $queue = delete $ns->{query_queue}
		3176	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3177
		3178	(shift @$queue)->[1]->($msg);
		3179	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3180
		3181	push @{ $ns->{query_queue} }, @$queue;
		3182
		3183	if (@{ $ns->{query_queue} } == @$queue) {
		3184	if (@$queue) {
		3185	$ns->send_packet ($ns->{query_queue}[0][0]);
		3186	} else {
		3187	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3188	}
		3189	}
		3190	},
		3191	on_exticmd => sub {
		3192	my ($ns, $buf) = @_;
		3193
		3194	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3195
		3196	if (ref $msg) {
		3197	my ($type, $reply, @payload) =
		3198	"ARRAY" eq ref $msg
		3199	? @$msg
		3200	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3201
		3202	my @reply;
		3203
		3204	if (my $cb = $EXTICMD{$type}) {
		3205	@reply = $cb->($ns, @payload);
		3206	}
		3207
		3208	$ns->ext_reply ($reply, @reply)
		3209	if $reply;
		3210
		3211	} else {
		3212	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3213	}
		3214
		3215	cf::override;
		3216	},
		3217	);
		3218
		3219	=item $client->async (\&cb)
		3220
		3221	Create a new coroutine, running the specified callback. The coroutine will
		3222	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3223	or loss of connection).
		3224
		3225	=cut
		3226
		3227	sub cf::client::async {
		3228	my ($self, $cb) = @_;
		3229
		3230	my $coro = &Coro::async ($cb);
		3231
		3232	$coro->on_destroy (sub {
		3233	delete $self->{_coro}{$coro+0};
		3234	});
		3235
		3236	$self->{_coro}{$coro+0} = $coro;
		3237
		3238	$coro
		3239	}
		3240
		3241	cf::client->attach (
		3242	on_client_destroy => sub {
		3243	my ($ns) = @_;
		3244
		3245	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3246	},
		3247	);
815		3248
816	=back	3249	=back
817		3250
818	=cut
819
820	#############################################################################
821		3251
822	=head2 SAFE SCRIPTING	3252	=head2 SAFE SCRIPTING
823		3253
824	Functions that provide a safe environment to compile and execute	3254	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	3255	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	3256	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	3257	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	3258	functions and methods that can be called is greatly reduced.
829		3259
830	=cut	3260	=cut
831		3261
832	our $safe = new Safe "safe";	3262	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	3263	our $safe_hole = new Safe::Hole;
834		3264
835	$SIG{FPE} = 'IGNORE';	3265	$SIG{FPE} = 'IGNORE';
836		3266
837	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3267	$safe->permit_only (Opcode::opset qw(
		3268	:base_core :base_mem :base_orig :base_math :base_loop
		3269	grepstart grepwhile mapstart mapwhile
		3270	sort time
		3271	));
838		3272
839	# here we export the classes and methods available to script code	3273	# here we export the classes and methods available to script code
840		3274
841	=pod	3275	=pod
842		3276
843	The following fucntions and emthods are available within a safe environment:	3277	The following functions and methods are available within a safe environment:
844		3278
845	cf::object contr pay_amount pay_player	3279	cf::object
		3280	contr pay_amount pay_player map x y force_find force_add destroy
		3281	insert remove name archname title slaying race decrease split
		3282	value
		3283
846	cf::object::player player	3284	cf::object::player
847	cf::player peaceful	3285	player
		3286
		3287	cf::player
		3288	peaceful
		3289
		3290	cf::map
		3291	trigger
848		3292
849	=cut	3293	=cut
850		3294
851	for (	3295	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	3296	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3297	insert remove inv nrof name archname title slaying race
		3298	decrease split destroy change_exp value msg lore send_msg)],
853	["cf::object::player" => qw(player)],	3299	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	3300	["cf::player" => qw(peaceful send_msg)],
		3301	["cf::map" => qw(trigger)],
855	) {	3302	) {
856	no strict 'refs';
857	my ($pkg, @funs) = @$_;	3303	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3304	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	3305	for @funs;
860	}	3306	}
861		3307
…		…
876		3322
877	my $qcode = $code;	3323	my $qcode = $code;
878	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3324	$qcode =~ s/"/‟/g; # not allowed in #line filenames
879	$qcode =~ s/\n/\\n/g;	3325	$qcode =~ s/\n/\\n/g;
880		3326
		3327	%vars = (_dummy => 0) unless %vars;
		3328
		3329	my @res;
881	local $_;	3330	local $_;
882	local @safe::cf::_safe_eval_args = values %vars;
883		3331
884	my $eval =	3332	my $eval =
885	"do {\n"	3333	"do {\n"
886	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3334	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
887	. "#line 0 \"{$qcode}\"\n"	3335	. "#line 0 \"{$qcode}\"\n"
888	. $code	3336	. $code
889	. "\n}"	3337	. "\n}"
890	;	3338	;
891		3339
		3340	if ($CFG{safe_eval}) {
892	sub_generation_inc;	3341	sub_generation_inc;
		3342	local @safe::cf::_safe_eval_args = values %vars;
893	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3343	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
894	sub_generation_inc;	3344	sub_generation_inc;
		3345	} else {
		3346	local @cf::_safe_eval_args = values %vars;
		3347	@res = wantarray ? eval eval : scalar eval $eval;
		3348	}
895		3349
896	if ($@) {	3350	if ($@) {
897	warn "$@";	3351	warn "$@",
898	warn "while executing safe code '$code'\n";	3352	"while executing safe code '$code'\n",
899	warn "with arguments " . (join " ", %vars) . "\n";	3353	"with arguments " . (join " ", %vars) . "\n";
900	}	3354	}
901		3355
902	wantarray ? @res : $res[0]	3356	wantarray ? @res : $res[0]
903	}	3357	}
904		3358
…		…
918	=cut	3372	=cut
919		3373
920	sub register_script_function {	3374	sub register_script_function {
921	my ($fun, $cb) = @_;	3375	my ($fun, $cb) = @_;
922		3376
923	no strict 'refs';	3377	$fun = "safe::$fun" if $CFG{safe_eval};
924	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3378	*$fun = $safe_hole->wrap ($cb);
925	}	3379	}
926		3380
927	=back	3381	=back
928		3382
929	=cut	3383	=cut
930		3384
931	#############################################################################	3385	#############################################################################
		3386	# the server's init and main functions
932		3387
933	=head2 EXTENSION DATABASE SUPPORT	3388	sub load_facedata($) {
		3389	my ($path) = @_;
934		3390
935	Crossfire maintains a very simple database for extension use. It can	3391	# HACK to clear player env face cache, we need some signal framework
936	currently store anything that can be serialised using Storable, which	3392	# for this (global event?)
937	excludes objects.	3393	%ext::player_env::MUSIC_FACE_CACHE = ();
938		3394
939	The parameter C<$family> should best start with the name of the extension	3395	my $enc = JSON::XS->new->utf8->canonical->relaxed;
940	using it, it should be unique.
941		3396
942	=over 4	3397	trace "loading facedata from $path\n";
943		3398
944	=item $hashref = cf::db_get $family	3399	0 < aio_load $path, my $facedata
		3400	or die "$path: $!";
945		3401
946	Return a hashref for use by the extension C<$family>, which can be	3402	$facedata = Coro::Storable::thaw $facedata;
947	modified. After modifications, you have to call C<cf::db_dirty> or
948	C<cf::db_sync>.
949		3403
950	=item $value = cf::db_get $family => $key	3404	$facedata->{version} == 2
		3405	or cf::cleanup "$path: version mismatch, cannot proceed.";
951		3406
952	Returns a single value from the database	3407	# patch in the exptable
		3408	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3409	$facedata->{resource}{"res/exp_table"} = {
		3410	type => FT_RSRC,
		3411	data => $exp_table,
		3412	hash => (Digest::MD5::md5 $exp_table),
		3413	};
		3414	cf::cede_to_tick;
953		3415
954	=item cf::db_put $family => $hashref	3416	{
		3417	my $faces = $facedata->{faceinfo};
955		3418
956	Stores the given family hashref into the database. Updates are delayed, if	3419	while (my ($face, $info) = each %$faces) {
957	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3420	my $idx = (cf::face::find $face) || cf::face::alloc $face;
958		3421
959	=item cf::db_put $family => $key => $value	3422	cf::face::set_visibility $idx, $info->{visibility};
		3423	cf::face::set_magicmap $idx, $info->{magicmap};
		3424	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3425	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
960		3426
961	Stores the given C<$value> in the family hash. Updates are delayed, if you	3427	cf::cede_to_tick;
962	want the data to be synced to disk immediately, use C<cf::db_sync>.	3428	}
963		3429
964	=item cf::db_dirty	3430	while (my ($face, $info) = each %$faces) {
		3431	next unless $info->{smooth};
965		3432
966	Marks the database as dirty, to be updated at a later time.	3433	my $idx = cf::face::find $face
		3434	or next;
967		3435
968	=item cf::db_sync	3436	if (my $smooth = cf::face::find $info->{smooth}) {
		3437	cf::face::set_smooth $idx, $smooth;
		3438	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3439	} else {
		3440	error "smooth face '$info->{smooth}' not found for face '$face'";
		3441	}
969		3442
970	Immediately write the database to disk I<if it is dirty>.	3443	cf::cede_to_tick;
		3444	}
		3445	}
971		3446
972	=cut	3447	{
		3448	my $anims = $facedata->{animinfo};
		3449
		3450	while (my ($anim, $info) = each %$anims) {
		3451	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3452	cf::cede_to_tick;
		3453	}
		3454
		3455	cf::anim::invalidate_all; # d'oh
		3456	}
		3457
		3458	{
		3459	my $res = $facedata->{resource};
		3460
		3461	while (my ($name, $info) = each %$res) {
		3462	if (defined $info->{type}) {
		3463	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3464
		3465	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3466	cf::face::set_type $idx, $info->{type};
		3467	} else {
		3468	$RESOURCE{$name} = $info; # unused
		3469	}
		3470
		3471	cf::cede_to_tick;
		3472	}
		3473	}
		3474
		3475	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3476
		3477	1
		3478	}
		3479
		3480	register_exticmd fx_want => sub {
		3481	my ($ns, $want) = @_;
		3482
		3483	while (my ($k, $v) = each %$want) {
		3484	$ns->fx_want ($k, $v);
		3485	}
		3486	};
		3487
		3488	sub load_resource_file($) {
		3489	my $guard = lock_acquire "load_resource_file";
		3490
		3491	my $status = load_resource_file_ $_[0];
		3492	get_slot 0.1, 100;
		3493	cf::arch::commit_load;
		3494
		3495	$status
		3496	}
		3497
		3498	sub reload_regions {
		3499	# HACK to clear player env face cache, we need some signal framework
		3500	# for this (global event?)
		3501	%ext::player_env::MUSIC_FACE_CACHE = ();
		3502
		3503	load_resource_file "$MAPDIR/regions"
		3504	or die "unable to load regions file\n";
		3505
		3506	for (cf::region::list) {
		3507	$_->{match} = qr/$_->{match}/
		3508	if exists $_->{match};
		3509	}
		3510	}
		3511
		3512	sub reload_facedata {
		3513	load_facedata "$DATADIR/facedata"
		3514	or die "unable to load facedata\n";
		3515	}
		3516
		3517	sub reload_archetypes {
		3518	load_resource_file "$DATADIR/archetypes"
		3519	or die "unable to load archetypes\n";
		3520	}
		3521
		3522	sub reload_treasures {
		3523	load_resource_file "$DATADIR/treasures"
		3524	or die "unable to load treasurelists\n";
		3525	}
		3526
		3527	sub reload_sound {
		3528	trace "loading sound config from $DATADIR/sound\n";
		3529
		3530	0 < Coro::AIO::aio_load "$DATADIR/sound", my $data
		3531	or die "$DATADIR/sound $!";
		3532
		3533	my $soundconf = JSON::XS->new->utf8->relaxed->decode ($data);
		3534
		3535	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3536	my $sound = $soundconf->{compat}[$_]
		3537	or next;
		3538
		3539	my $face = cf::face::find "sound/$sound->[1]";
		3540	cf::sound::set $sound->[0] => $face;
		3541	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3542	}
		3543
		3544	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3545	my $face = cf::face::find "sound/$v";
		3546	cf::sound::set $k => $face;
		3547	}
		3548	}
		3549
		3550	sub reload_resources {
		3551	trace "reloading resource files...\n";
		3552
		3553	reload_exp_table;
		3554	reload_materials;
		3555	reload_facedata;
		3556	reload_sound;
		3557	reload_archetypes;
		3558	reload_regions;
		3559	reload_treasures;
		3560
		3561	trace "finished reloading resource files\n";
		3562	}
		3563
		3564	sub reload_config {
		3565	trace "reloading config file...\n";
		3566
		3567	0 < aio_load "$CONFDIR/config", my $config
		3568	or die "$CONFDIR/config: $!";
		3569
		3570	utf8::decode $config;
		3571	*CFG = yaml_load $config;
		3572
		3573	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3574
		3575	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3576	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3577
		3578	if (exists $CFG{mlockall}) {
		3579	eval {
		3580	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3581	and die "WARNING: m(un)lockall failed: $!\n";
		3582	};
		3583	warn $@ if $@;
		3584	}
		3585	}
		3586
		3587	sub pidfile() {
		3588	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3589	or die "$PIDFILE: $!";
		3590	flock $fh, &Fcntl::LOCK_EX
		3591	or die "$PIDFILE: flock: $!";
		3592	$fh
		3593	}
		3594
		3595	# make sure only one server instance is running at any one time
		3596	sub atomic {
		3597	my $fh = pidfile;
		3598
		3599	my $pid = <$fh>;
		3600	kill 9, $pid if $pid > 0;
		3601
		3602	seek $fh, 0, 0;
		3603	print $fh $$;
		3604	}
		3605
		3606	sub main_loop {
		3607	trace "EV::loop starting\n";
		3608	if (1) {
		3609	EV::loop;
		3610	}
		3611	trace "EV::loop returned\n";
		3612	goto &main_loop unless $REALLY_UNLOOP;
		3613	}
		3614
		3615	sub main {
		3616	cf::init_globals; # initialise logging
		3617
		3618	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3619	LOG llevInfo, "Copyright (C) 2005-2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3620	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3621	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3622
		3623	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3624
		3625	# we must not ever block the main coroutine
		3626	local $Coro::idle = sub {
		3627	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3628	(async {
		3629	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3630	EV::loop EV::LOOP_ONESHOT;
		3631	})->prio (Coro::PRIO_MAX);
		3632	};
		3633
		3634	evthread_start IO::AIO::poll_fileno;
		3635
		3636	cf::sync_job {
		3637	cf::incloader::init ();
		3638
		3639	cf::init_anim;
		3640	cf::init_attackmess;
		3641	cf::init_dynamic;
		3642
		3643	cf::load_settings;
		3644
		3645	reload_resources;
		3646	reload_config;
		3647	db_init;
		3648
		3649	cf::init_uuid;
		3650	cf::init_signals;
		3651	cf::init_skills;
		3652
		3653	cf::init_beforeplay;
		3654
		3655	atomic;
		3656
		3657	load_extensions;
		3658
		3659	utime time, time, $RUNTIMEFILE;
		3660
		3661	# no (long-running) fork's whatsoever before this point(!)
		3662	use POSIX ();
		3663	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3664
		3665	(pop @POST_INIT)->(0) while @POST_INIT;
		3666	};
		3667
		3668	cf::object::thawer::errors_are_fatal 0;
		3669	info "parse errors in files are no longer fatal from this point on.\n";
		3670
		3671	my $free_main; $free_main = EV::idle sub {
		3672	undef $free_main;
		3673	undef &main; # free gobs of memory :)
		3674	};
		3675
		3676	goto &main_loop;
		3677	}
		3678
		3679	#############################################################################
		3680	# initialisation and cleanup
		3681
		3682	# install some emergency cleanup handlers
		3683	BEGIN {
		3684	our %SIGWATCHER = ();
		3685	for my $signal (qw(INT HUP TERM)) {
		3686	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3687	cf::cleanup "SIG$signal";
		3688	};
		3689	}
		3690	}
		3691
		3692	sub write_runtime_sync {
		3693	my $t0 = AE::time;
		3694
		3695	# first touch the runtime file to show we are still running:
		3696	# the fsync below can take a very very long time.
		3697
		3698	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3699
		3700	my $guard = cf::lock_acquire "write_runtime";
		3701
		3702	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3703	or return;
		3704
		3705	my $value = $cf::RUNTIME + 90 + 10;
		3706	# 10 is the runtime save interval, for a monotonic clock
		3707	# 60 allows for the watchdog to kill the server.
		3708
		3709	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3710	and return;
		3711
		3712	# always fsync - this file is important
		3713	aio_fsync $fh
		3714	and return;
		3715
		3716	# touch it again to show we are up-to-date
		3717	aio_utime $fh, undef, undef;
		3718
		3719	close $fh
		3720	or return;
		3721
		3722	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3723	and return;
		3724
		3725	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3726
		3727	1
		3728	}
		3729
		3730	our $uuid_lock;
		3731	our $uuid_skip;
		3732
		3733	sub write_uuid_sync($) {
		3734	$uuid_skip ||= $_[0];
		3735
		3736	return if $uuid_lock;
		3737	local $uuid_lock = 1;
		3738
		3739	my $uuid = "$LOCALDIR/uuid";
		3740
		3741	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3742	or return;
		3743
		3744	my $value = uuid_seq uuid_cur;
		3745
		3746	unless ($value) {
		3747	info "cowardly refusing to write zero uuid value!\n";
		3748	return;
		3749	}
		3750
		3751	my $value = uuid_str $value + $uuid_skip;
		3752	$uuid_skip = 0;
		3753
		3754	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3755	and return;
		3756
		3757	# always fsync - this file is important
		3758	aio_fsync $fh
		3759	and return;
		3760
		3761	close $fh
		3762	or return;
		3763
		3764	aio_rename "$uuid~", $uuid
		3765	and return;
		3766
		3767	trace "uuid file written ($value).\n";
		3768
		3769	1
		3770
		3771	}
		3772
		3773	sub write_uuid($$) {
		3774	my ($skip, $sync) = @_;
		3775
		3776	$sync ? write_uuid_sync $skip
		3777	: async { write_uuid_sync $skip };
		3778	}
		3779
		3780	sub emergency_save() {
		3781	my $freeze_guard = cf::freeze_mainloop;
		3782
		3783	info "emergency_perl_save: enter\n";
		3784
		3785	# this is a trade-off: we want to be very quick here, so
		3786	# save all maps without fsync, and later call a global sync
		3787	# (which in turn might be very very slow)
		3788	local $USE_FSYNC = 0;
		3789
		3790	cf::sync_job {
		3791	cf::write_runtime_sync; # external watchdog should not bark
		3792
		3793	# use a peculiar iteration method to avoid tripping on perl
		3794	# refcount bugs in for. also avoids problems with players
		3795	# and maps saved/destroyed asynchronously.
		3796	info "emergency_perl_save: begin player save\n";
		3797	for my $login (keys %cf::PLAYER) {
		3798	my $pl = $cf::PLAYER{$login} or next;
		3799	$pl->valid or next;
		3800	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3801	$pl->save;
		3802	}
		3803	info "emergency_perl_save: end player save\n";
		3804
		3805	cf::write_runtime_sync; # external watchdog should not bark
		3806
		3807	info "emergency_perl_save: begin map save\n";
		3808	for my $path (keys %cf::MAP) {
		3809	my $map = $cf::MAP{$path} or next;
		3810	$map->valid or next;
		3811	$map->save;
		3812	}
		3813	info "emergency_perl_save: end map save\n";
		3814
		3815	cf::write_runtime_sync; # external watchdog should not bark
		3816
		3817	info "emergency_perl_save: begin database checkpoint\n";
		3818	BDB::db_env_txn_checkpoint $DB_ENV;
		3819	info "emergency_perl_save: end database checkpoint\n";
		3820
		3821	info "emergency_perl_save: begin write uuid\n";
		3822	write_uuid_sync 1;
		3823	info "emergency_perl_save: end write uuid\n";
		3824
		3825	cf::write_runtime_sync; # external watchdog should not bark
		3826
		3827	trace "emergency_perl_save: syncing database to disk";
		3828	BDB::db_env_txn_checkpoint $DB_ENV;
		3829
		3830	info "emergency_perl_save: starting sync\n";
		3831	IO::AIO::aio_sync sub {
		3832	info "emergency_perl_save: finished sync\n";
		3833	};
		3834
		3835	cf::write_runtime_sync; # external watchdog should not bark
		3836
		3837	trace "emergency_perl_save: flushing outstanding aio requests";
		3838	while (IO::AIO::nreqs || BDB::nreqs) {
		3839	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3840	}
		3841
		3842	cf::write_runtime_sync; # external watchdog should not bark
		3843	};
		3844
		3845	info "emergency_perl_save: leave\n";
		3846	}
		3847
		3848	sub post_cleanup {
		3849	my ($make_core) = @_;
		3850
		3851	IO::AIO::flush;
		3852
		3853	error Carp::longmess "post_cleanup backtrace"
		3854	if $make_core;
		3855
		3856	my $fh = pidfile;
		3857	unlink $PIDFILE if <$fh> == $$;
		3858	}
		3859
		3860	# a safer delete_package, copied from Symbol
		3861	sub clear_package($) {
		3862	my $pkg = shift;
		3863
		3864	# expand to full symbol table name if needed
		3865	unless ($pkg =~ /^main::.*::$/) {
		3866	$pkg = "main$pkg" if $pkg =~ /^::/;
		3867	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3868	$pkg .= '::' unless $pkg =~ /::$/;
		3869	}
		3870
		3871	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3872	my $stem_symtab = *{$stem}{HASH};
		3873
		3874	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3875	or return;
		3876
		3877	# clear all symbols
		3878	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3879	for my $name (keys %$leaf_symtab) {
		3880	_gv_clear *{"$pkg$name"};
		3881	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3882	}
		3883	}
		3884
		3885	sub do_reload_perl() {
		3886	# can/must only be called in main
		3887	unless (in_main) {
		3888	error "can only reload from main coroutine";
		3889	return;
		3890	}
		3891
		3892	return if $RELOAD++;
		3893
		3894	my $t1 = AE::time;
		3895
		3896	while ($RELOAD) {
		3897	cf::get_slot 0.1, -1, "reload_perl";
		3898	info "reloading...";
		3899
		3900	trace "entering sync_job";
		3901
		3902	cf::sync_job {
		3903	#cf::emergency_save;
		3904
		3905	trace "cancelling all extension coros";
		3906	$_->cancel for values %EXT_CORO;
		3907	%EXT_CORO = ();
		3908
		3909	trace "removing commands";
		3910	%COMMAND = ();
		3911
		3912	trace "removing ext/exti commands";
		3913	%EXTCMD = ();
		3914	%EXTICMD = ();
		3915
		3916	trace "unloading/nuking all extensions";
		3917	for my $pkg (@EXTS) {
		3918	trace "... unloading $pkg";
		3919
		3920	if (my $cb = $pkg->can ("unload")) {
		3921	eval {
		3922	$cb->($pkg);
		3923	1
		3924	} or error "$pkg unloaded, but with errors: $@";
		3925	}
		3926
		3927	trace "... clearing $pkg";
		3928	clear_package $pkg;
		3929	}
		3930
		3931	trace "unloading all perl modules loaded from $LIBDIR";
		3932	while (my ($k, $v) = each %INC) {
		3933	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3934
		3935	trace "... unloading $k";
		3936	delete $INC{$k};
		3937
		3938	$k =~ s/\.pm$//;
		3939	$k =~ s/\//::/g;
		3940
		3941	if (my $cb = $k->can ("unload_module")) {
		3942	$cb->();
		3943	}
		3944
		3945	clear_package $k;
		3946	}
		3947
		3948	trace "getting rid of safe::, as good as possible";
		3949	clear_package "safe::$_"
		3950	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3951
		3952	trace "unloading cf.pm \"a bit\"";
		3953	delete $INC{"cf.pm"};
		3954	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3955
		3956	# don't, removes xs symbols, too,
		3957	# and global variables created in xs
		3958	#clear_package __PACKAGE__;
		3959
		3960	info "unload completed, starting to reload now";
		3961
		3962	trace "reloading cf.pm";
		3963	require cf;
		3964	cf::_connect_to_perl_1;
		3965
		3966	trace "loading config and database again";
		3967	cf::reload_config;
		3968
		3969	trace "loading extensions";
		3970	cf::load_extensions;
		3971
		3972	if ($REATTACH_ON_RELOAD) {
		3973	trace "reattaching attachments to objects/players";
		3974	_global_reattach; # objects, sockets
		3975	trace "reattaching attachments to maps";
		3976	reattach $_ for values %MAP;
		3977	trace "reattaching attachments to players";
		3978	reattach $_ for values %PLAYER;
		3979	}
		3980
		3981	trace "running post_init jobs";
		3982	(pop @POST_INIT)->(1) while @POST_INIT;
		3983
		3984	trace "leaving sync_job";
		3985
		3986	1
		3987	} or do {
		3988	error $@;
		3989	cf::cleanup "error while reloading, exiting.";
		3990	};
		3991
		3992	info "reloaded";
		3993	--$RELOAD;
		3994	}
		3995
		3996	$t1 = AE::time - $t1;
		3997	info "reload completed in ${t1}s\n";
		3998	};
		3999
		4000	our $RELOAD_WATCHER; # used only during reload
		4001
		4002	sub reload_perl() {
		4003	# doing reload synchronously and two reloads happen back-to-back,
		4004	# coro crashes during coro_state_free->destroy here.
		4005
		4006	$RELOAD_WATCHER ||= cf::async {
		4007	Coro::AIO::aio_wait cache_extensions;
		4008
		4009	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4010	do_reload_perl;
		4011	undef $RELOAD_WATCHER;
		4012	};
		4013	};
		4014	}
		4015
		4016	register_command "reload" => sub {
		4017	my ($who, $arg) = @_;
		4018
		4019	if ($who->flag (FLAG_WIZ)) {
		4020	$who->message ("reloading server.");
		4021	async {
		4022	$Coro::current->{desc} = "perl_reload";
		4023	reload_perl;
		4024	};
		4025	}
		4026	};
		4027
		4028	#############################################################################
		4029
		4030	my $bug_warning = 0;
		4031
		4032	our @WAIT_FOR_TICK;
		4033	our @WAIT_FOR_TICK_BEGIN;
		4034
		4035	sub wait_for_tick() {
		4036	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4037
		4038	my $signal = new Coro::Signal;
		4039	push @WAIT_FOR_TICK, $signal;
		4040	$signal->wait;
		4041	}
		4042
		4043	sub wait_for_tick_begin() {
		4044	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4045
		4046	my $signal = new Coro::Signal;
		4047	push @WAIT_FOR_TICK_BEGIN, $signal;
		4048	$signal->wait;
		4049	}
		4050
		4051	sub tick {
		4052	if ($Coro::current != $Coro::main) {
		4053	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4054	unless ++$bug_warning > 10;
		4055	return;
		4056	}
		4057
		4058	cf::server_tick; # one server iteration
		4059
		4060	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4061
		4062	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4063	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4064	Coro::async_pool {
		4065	$Coro::current->{desc} = "runtime saver";
		4066	write_runtime_sync
		4067	or error "ERROR: unable to write runtime file: $!";
		4068	};
		4069	}
		4070
		4071	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4072	$sig->send;
		4073	}
		4074	while (my $sig = shift @WAIT_FOR_TICK) {
		4075	$sig->send;
		4076	}
		4077
		4078	$LOAD = ($NOW - $TICK_START) / $TICK;
		4079	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4080
		4081	if (0) {
		4082	if ($NEXT_TICK) {
		4083	my $jitter = $TICK_START - $NEXT_TICK;
		4084	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4085	debug "jitter $JITTER\n";#d#
		4086	}
		4087	}
		4088	}
973		4089
974	{	4090	{
975	my $db;	4091	# configure BDB
976	my $path = cf::localdir . "/database.pst";
977		4092
978	sub db_load() {	4093	BDB::min_parallel 16;
979	warn "loading database $path\n";#d# remove later	4094	BDB::max_poll_reqs $TICK * 0.1;
980	$db = stat $path ? Storable::retrieve $path : { };	4095	$AnyEvent::BDB::WATCHER->priority (1);
981	}
982		4096
983	my $pid;	4097	unless ($DB_ENV) {
		4098	$DB_ENV = BDB::db_env_create;
		4099	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4100	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4101	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4102	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4103	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
984		4104
985	sub db_save() {	4105	cf::sync_job {
986	warn "saving database $path\n";#d# remove later
987	waitpid $pid, 0 if $pid;
988	if (0 == ($pid = fork)) {
989	$db->{_meta}{version} = 1;
990	Storable::nstore $db, "$path~";
991	rename "$path~", $path;
992	cf::_exit 0 if defined $pid;
993	}
994	}
995
996	my $dirty;
997
998	sub db_sync() {
999	db_save if $dirty;
1000	undef $dirty;
1001	}
1002
1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1004	db_sync;
1005	});
1006
1007	sub db_dirty() {
1008	$dirty = 1;
1009	$idle->start;
1010	}
1011
1012	sub db_get($;$) {
1013	@_ >= 2
1014	? $db->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })
1016	}
1017
1018	sub db_put($$;$) {
1019	if (@_ >= 3) {
1020	$db->{$_[0]}{$_[1]} = $_[2];
1021	} else {	4106	eval {
1022	$db->{$_[0]} = $_[1];	4107	BDB::db_env_open
1023	}	4108	$DB_ENV,
1024	db_dirty;	4109	$BDBDIR,
1025	}	4110	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4111	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4112	0666;
1026		4113
1027	attach_global	4114	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1028	prio => 10000,
1029	on_cleanup => sub {
1030	db_sync;
1031	},
1032	;
1033	}
1034
1035	#############################################################################
1036	# the server's main()
1037
1038	sub cfg_load {
1039	open my $fh, "<:utf8", cf::confdir . "/config"
1040	or return;
1041
1042	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;
1044	}
1045
1046	sub main {
1047	cfg_load;
1048	db_load;
1049	load_extensions;
1050	Event::loop;
1051	}
1052
1053	#############################################################################
1054	# initialisation
1055
1056	sub _perl_reload(&) {
1057	my ($msg) = @_;
1058
1059	$msg->("reloading...");
1060
1061	eval {
1062	# cancel all watchers
1063	$_->cancel for Event::all_watchers;
1064
1065	# unload all extensions
1066	for (@exts) {
1067	$msg->("unloading <$_>");
1068	unload_extension $_;
1069	}
1070
1071	# unload all modules loaded from $LIBDIR
1072	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074
1075	$msg->("removing <$k>");
1076	delete $INC{$k};
1077
1078	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;
1080
1081	if (my $cb = $k->can ("unload_module")) {
1082	$cb->();
1083	}	4115	};
1084		4116
1085	Symbol::delete_package $k;	4117	cf::cleanup "db_env_open(db): $@" if $@;
1086	}	4118	};
		4119	}
1087		4120
1088	# sync database to disk	4121	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1089	cf::db_sync;	4122	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1090
1091	# get rid of safe::, as good as possible
1092	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1094
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"
1099	delete $INC{"cf.pm"};
1100
1101	# don't, removes xs symbols, too,
1102	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;
1104
1105	# reload cf.pm
1106	$msg->("reloading cf.pm");
1107	require cf;
1108
1109	# load config and database again
1110	cf::cfg_load;
1111	cf::db_load;
1112
1113	# load extensions
1114	$msg->("load extensions");
1115	cf::load_extensions;
1116
1117	# reattach attachments to objects
1118	$msg->("reattach");
1119	_global_reattach;
1120	};	4123	};
1121	$msg->($@) if $@;	4124	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1122		4125	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1123	$msg->("reloaded");
1124	};
1125
1126	sub perl_reload() {
1127	_perl_reload {
1128	warn $_[0];
1129	print "$_[0]\n";
1130	};	4126	};
		4127	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4128	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4129	};
1131	}	4130	}
1132		4131
1133	register_command "perl-reload", 0, sub {	4132	{
		4133	# configure IO::AIO
		4134
		4135	IO::AIO::min_parallel 8;
		4136	IO::AIO::max_poll_time $TICK * 0.1;
		4137	undef $AnyEvent::AIO::WATCHER;
		4138	}
		4139
		4140	my $_log_backtrace;
		4141
		4142	sub _log_backtrace {
1134	my ($who, $arg) = @_;	4143	my ($msg, @addr) = @_;
1135		4144
1136	if ($who->flag (FLAG_WIZ)) {	4145	$msg =~ s/\n//;
1137	_perl_reload {	4146
1138	warn $_[0];	4147	# limit the # of concurrent backtraces
1139	$who->message ($_[0]);	4148	if ($_log_backtrace < 2) {
		4149	++$_log_backtrace;
		4150	my $perl_bt = Carp::longmess $msg;
		4151	async {
		4152	$Coro::current->{desc} = "abt $msg";
		4153
		4154	my @bt = fork_call {
		4155	@addr = map { sprintf "%x", $_ } @addr;
		4156	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4157	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4158	or die "addr2line: $!";
		4159
		4160	my @funcs;
		4161	my @res = <$fh>;
		4162	chomp for @res;
		4163	while (@res) {
		4164	my ($func, $line) = splice @res, 0, 2, ();
		4165	push @funcs, "[$func] $line";
		4166	}
		4167
		4168	@funcs
		4169	};
		4170
		4171	LOG llevInfo, "[ABT] $perl_bt\n";
		4172	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4173	LOG llevInfo, "[ABT] $_\n" for @bt;
		4174	--$_log_backtrace;
1140	};	4175	};
1141	}	4176	} else {
1142	};	4177	LOG llevInfo, "[ABT] $msg\n";
1143		4178	LOG llevInfo, "[ABT] [suppressed]\n";
1144	register "<global>", __PACKAGE__;
1145
1146	unshift @INC, $LIBDIR;
1147
1148	$TICK_WATCHER = Event->timer (
1149	prio => 1,
1150	at => $NEXT_TICK || 1,
1151	cb => sub {
1152	cf::server_tick; # one server iteration
1153
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;
1156
1157	# if we are delayed by four ticks, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1159
1160	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;
1162	},	4179	}
1163	);	4180	}
		4181
		4182	# load additional modules
		4183	require "cf/$_.pm" for @EXTRA_MODULES;
		4184	cf::_connect_to_perl_2;
		4185
		4186	END { cf::emergency_save }
1164		4187
1165	1	4188	1
1166		4189

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