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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.539 by root, Tue May 4 22:49:21 2010 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
		24
		25	use common::sense;
2		26
3	use Symbol;	27	use Symbol;
4	use List::Util;	28	use List::Util;
5	use Storable;	29	use Socket;
		30	use EV;
6	use Opcode;	31	use Opcode;
7	use Safe;	32	use Safe;
8	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
9		36
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Fcntl;
		57	use YAML::XS ();
		58	use IO::AIO ();
10	use Time::HiRes;	59	use Time::HiRes;
11	use Event;	60	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
13		62
14	use strict;	63	AnyEvent::detect;
15		64
16	_reload_1;	65	# configure various modules to our taste
		66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
17		69
		70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
18	our %COMMAND = ();	81	our %COMMAND = ();
		82	our %COMMAND_TIME = ();
		83
		84	our @EXTS = (); # list of extension package names
		85	our %EXTCMD = ();
		86	our %EXTICMD = ();
		87	our %EXT_CORO = (); # coroutines bound to extensions
		88	our %EXT_MAP = (); # pluggable maps
		89
		90	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	91	our @EVENT;
20	our %PROP_TYPE;	92	our @REFLECT; # set by XS
21	our %PROP_IDX;	93	our %REFLECT; # set by us
22	our $LIBDIR = maps_directory "perl";
23		94
24	our $TICK = MAX_TIME * 1e-6;	95	our $CONFDIR = confdir;
25	our $TICK_WATCHER;	96	our $DATADIR = datadir;
		97	our $LIBDIR = "$DATADIR/ext";
		98	our $PODDIR = "$DATADIR/pod";
		99	our $MAPDIR = "$DATADIR/" . mapdir;
		100	our $LOCALDIR = localdir;
		101	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		102	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		103	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		104	our $RANDOMDIR = "$LOCALDIR/random";
		105	our $BDBDIR = "$LOCALDIR/db";
		106	our $PIDFILE = "$LOCALDIR/pid";
		107	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		108
		109	our %RESOURCE; # unused
		110
		111	our $OUTPUT_RATE_MIN = 3000;
		112	our $OUTPUT_RATE_MAX = 1000000;
		113
		114	our $MAX_LINKS = 32; # how many chained exits to follow
		115	our $VERBOSE_IO = 1;
		116
		117	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		118	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	119	our $NEXT_TICK;
		120	our $USE_FSYNC = 1; # use fsync to write maps - default on
27		121
28	BEGIN {	122	our $BDB_DEADLOCK_WATCHER;
29	*CORE::GLOBAL::warn = sub {	123	our $BDB_CHECKPOINT_WATCHER;
		124	our $BDB_TRICKLE_WATCHER;
		125	our $DB_ENV;
		126
		127	our @EXTRA_MODULES = qw(pod match mapscript);
		128
		129	our %CFG;
		130
		131	our $UPTIME; $UPTIME ||= time;
		132	our $RUNTIME;
		133	our $NOW;
		134
		135	our (%PLAYER, %PLAYER_LOADING); # all users
		136	our (%MAP, %MAP_LOADING ); # all maps
		137	our $LINK_MAP; # the special {link} map, which is always available
		138
		139	# used to convert map paths into valid unix filenames by replacing / by ∕
		140	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		141
		142	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		143	our $LOADAVG; # same thing, but with alpha-smoothing
		144	our $JITTER; # average jitter
		145	our $TICK_START; # for load detecting purposes
		146
		147	our @POST_INIT;
		148
		149	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		150	our $REALLY_UNLOOP; # never set to true, please :)
		151
		152	binmode STDOUT;
		153	binmode STDERR;
		154
		155	# read virtual server time, if available
		156	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		157	open my $fh, "<", $RUNTIMEFILE
		158	or die "unable to read $RUNTIMEFILE file: $!";
		159	$RUNTIME = <$fh> + 0.;
		160	}
		161
		162	eval "sub TICK() { $TICK } 1" or die;
		163
		164	mkdir $_
		165	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		166
		167	our $EMERGENCY_POSITION;
		168
		169	sub cf::map::normalise;
		170
		171	sub in_main() {
		172	$Coro::current == $Coro::main
		173	}
		174
		175	#############################################################################
		176
		177	%REFLECT = ();
		178	for (@REFLECT) {
		179	my $reflect = JSON::XS::decode_json $_;
		180	$REFLECT{$reflect->{class}} = $reflect;
		181	}
		182
		183	# this is decidedly evil
		184	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		185
		186	#############################################################################
		187
		188	=head2 GLOBAL VARIABLES
		189
		190	=over 4
		191
		192	=item $cf::UPTIME
		193
		194	The timestamp of the server start (so not actually an uptime).
		195
		196	=item $cf::RUNTIME
		197
		198	The time this server has run, starts at 0 and is increased by $cf::TICK on
		199	every server tick.
		200
		201	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		202	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		203	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		204
		205	Various directories - "/etc", read-only install directory, perl-library
		206	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		207	unique-items directory, player file directory, random maps directory and
		208	database environment.
		209
		210	=item $cf::NOW
		211
		212	The time of the last (current) server tick.
		213
		214	=item $cf::TICK
		215
		216	The interval between server ticks, in seconds.
		217
		218	=item $cf::LOADAVG
		219
		220	The current CPU load on the server (alpha-smoothed), as a value between 0
		221	(none) and 1 (overloaded), indicating how much time is spent on processing
		222	objects per tick. Healthy values are < 0.5.
		223
		224	=item $cf::LOAD
		225
		226	The raw value load value from the last tick.
		227
		228	=item %cf::CFG
		229
		230	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		231	from wherever your confdir points to.
		232
		233	=item cf::wait_for_tick, cf::wait_for_tick_begin
		234
		235	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		236	returns directly I<after> the tick processing (and consequently, can only wake one process
		237	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		238
		239	=item @cf::INVOKE_RESULTS
		240
		241	This array contains the results of the last C<invoke ()> call. When
		242	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		243	that call.
		244
		245	=item %cf::REFLECT
		246
		247	Contains, for each (C++) class name, a hash reference with information
		248	about object members (methods, scalars, arrays and flags) and other
		249	metadata, which is useful for introspection.
		250
		251	=back
		252
		253	=cut
		254
		255	sub error(@) { LOG llevError, join "", @_ }
		256	sub warn (@) { LOG llevWarn , join "", @_ }
		257	sub info (@) { LOG llevInfo , join "", @_ }
		258	sub debug(@) { LOG llevDebug, join "", @_ }
		259	sub trace(@) { LOG llevTrace, join "", @_ }
		260
		261	$Coro::State::WARNHOOK = sub {
30	my $msg = join "", @_;	262	my $msg = join "", @_;
		263
31	$msg .= "\n"	264	$msg .= "\n"
32	unless $msg =~ /\n$/;	265	unless $msg =~ /\n$/;
33		266
34	print STDERR "cfperl: $msg";	267	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
35	LOG llevError, "cfperl: $msg";
36	};
37	}
38		268
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	269	LOG llevWarn, $msg;
		270	};
40		271
41	# generate property mutators	272	$Coro::State::DIEHOOK = sub {
42	sub prop_gen {	273	return unless $^S eq 0; # "eq", not "=="
43	my ($prefix, $class) = @_;
44		274
45	no strict 'refs';	275	error Carp::longmess $_[0];
46		276
47	for my $prop (keys %PROP_TYPE) {	277	if (in_main) {#d#
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	278	error "DIEHOOK called in main context, Coro bug?\n";#d#
49	my $sub = lc $1;	279	return;#d#
		280	}#d#
50		281
51	my $type = $PROP_TYPE{$prop};	282	# kill coroutine otherwise
52	my $idx = $PROP_IDX {$prop};	283	Coro::terminate
		284	};
53		285
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	286	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	287	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
56	};	288	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
57		289	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
58	*{"$class\::set_$sub"} = sub {	290	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
59	$_[0]->set_property ($type, $idx, $_[1]);	291	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	292	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		293
75	# we bless all objects into (empty) derived classes to force a method lookup	294	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	295	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	296	for my $pkg (qw(
78	no strict 'refs';	297	cf::global cf::attachable
		298	cf::object cf::object::player
		299	cf::client cf::player
		300	cf::arch cf::living
		301	cf::map cf::mapspace
		302	cf::party cf::region
		303	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	304	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	305	}
81		306
82	$Event::DIED = sub {	307	$EV::DIED = sub {
83	warn "error in event callback: @_";	308	Carp::cluck "error in event callback: @_";
84	};	309	};
85		310
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	311	#############################################################################
93	# utility functions
94		312
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	313	=head2 UTILITY FUNCTIONS
96		314
97	sub from_json($) {	315	=over 4
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101		316
102	sub to_json($) {	317	=item dumpval $ref
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	318
104	JSON::Syck::Dump $_[0]	319	=cut
		320
		321	sub dumpval {
		322	eval {
		323	local $SIG{__DIE__};
		324	my $d;
		325	if (1) {
		326	$d = new Data::Dumper([$_[0]], ["*var"]);
		327	$d->Terse(1);
		328	$d->Indent(2);
		329	$d->Quotekeys(0);
		330	$d->Useqq(1);
		331	#$d->Bless(...);
		332	$d->Seen($_[1]) if @_ > 1;
		333	$d = $d->Dump();
		334	}
		335	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		336	$d
		337	} || "[unable to dump $_[0]: '$@']";
105	}	338	}
		339
		340	=item $ref = cf::decode_json $json
		341
		342	Converts a JSON string into the corresponding perl data structure.
		343
		344	=item $json = cf::encode_json $ref
		345
		346	Converts a perl data structure into its JSON representation.
		347
		348	=cut
		349
		350	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		351
		352	sub encode_json($) { $json_coder->encode ($_[0]) }
		353	sub decode_json($) { $json_coder->decode ($_[0]) }
		354
		355	=item cf::post_init { BLOCK }
		356
		357	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		358	but I<before> the server starts ticking again.
		359
		360	The cdoeblock will have a single boolean argument to indicate whether this
		361	is a reload or not.
		362
		363	=cut
		364
		365	sub post_init(&) {
		366	push @POST_INIT, shift;
		367	}
		368
		369	=item cf::lock_wait $string
		370
		371	Wait until the given lock is available. See cf::lock_acquire.
		372
		373	=item my $lock = cf::lock_acquire $string
		374
		375	Wait until the given lock is available and then acquires it and returns
		376	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		377	for example when the coroutine gets canceled), the lock is automatically
		378	returned.
		379
		380	Locks are *not* recursive, locking from the same coro twice results in a
		381	deadlocked coro.
		382
		383	Lock names should begin with a unique identifier (for example, cf::map::find
		384	uses map_find and cf::map::load uses map_load).
		385
		386	=item $locked = cf::lock_active $string
		387
		388	Return true if the lock is currently active, i.e. somebody has locked it.
		389
		390	=cut
		391
		392	our $LOCKS = new Coro::SemaphoreSet;
		393
		394	sub lock_wait($) {
		395	$LOCKS->wait ($_[0]);
		396	}
		397
		398	sub lock_acquire($) {
		399	$LOCKS->guard ($_[0])
		400	}
		401
		402	sub lock_active($) {
		403	$LOCKS->count ($_[0]) < 1
		404	}
		405
		406	sub freeze_mainloop {
		407	tick_inhibit_inc;
		408
		409	&Guard::guard (\&tick_inhibit_dec);
		410	}
		411
		412	=item cf::periodic $interval, $cb
		413
		414	Like EV::periodic, but randomly selects a starting point so that the actions
		415	get spread over time.
		416
		417	=cut
		418
		419	sub periodic($$) {
		420	my ($interval, $cb) = @_;
		421
		422	my $start = rand List::Util::min 180, $interval;
		423
		424	EV::periodic $start, $interval, 0, $cb
		425	}
		426
		427	=item cf::get_slot $time[, $priority[, $name]]
		428
		429	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		430	This call blocks and returns only when you have at least C<$time> seconds
		431	of cpu time till the next tick. The slot is only valid till the next cede.
		432
		433	The optional C<$name> can be used to identify the job to run. It might be
		434	used for statistical purposes and should identify the same time-class.
		435
		436	Useful for short background jobs.
		437
		438	=cut
		439
		440	our @SLOT_QUEUE;
		441	our $SLOT_QUEUE;
		442	our $SLOT_DECAY = 0.9;
		443
		444	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		445	$SLOT_QUEUE = Coro::async {
		446	$Coro::current->desc ("timeslot manager");
		447
		448	my $signal = new Coro::Signal;
		449	my $busy;
		450
		451	while () {
		452	next_job:
		453
		454	my $avail = cf::till_tick;
		455
		456	for (0 .. $#SLOT_QUEUE) {
		457	if ($SLOT_QUEUE[$_][0] <= $avail) {
		458	$busy = 0;
		459	my $job = splice @SLOT_QUEUE, $_, 1, ();
		460	$job->[2]->send;
		461	Coro::cede;
		462	goto next_job;
		463	} else {
		464	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		465	}
		466	}
		467
		468	if (@SLOT_QUEUE) {
		469	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		470	push @cf::WAIT_FOR_TICK, $signal;
		471	$signal->wait;
		472	} else {
		473	$busy = 0;
		474	Coro::schedule;
		475	}
		476	}
		477	};
		478
		479	sub get_slot($;$$) {
		480	return if tick_inhibit || $Coro::current == $Coro::main;
		481
		482	my ($time, $pri, $name) = @_;
		483
		484	$time = clamp $time, 0.01, $TICK * .6;
		485
		486	my $sig = new Coro::Signal;
		487
		488	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		489	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		490	$SLOT_QUEUE->ready;
		491	$sig->wait;
		492	}
		493
		494	=item cf::async { BLOCK }
		495
		496	Currently the same as Coro::async_pool, meaning you cannot use
		497	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		498	thing you are allowed to do is call C<prio> on it.
		499
		500	=cut
		501
		502	BEGIN { *async = \&Coro::async_pool }
		503
		504	=item cf::sync_job { BLOCK }
		505
		506	The design of Deliantra requires that the main coroutine ($Coro::main)
		507	is always able to handle events or runnable, as Deliantra is only
		508	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		509	acceptable.
		510
		511	If it must be done, put the blocking parts into C<sync_job>. This will run
		512	the given BLOCK in another coroutine while waiting for the result. The
		513	server will be frozen during this time, so the block should either finish
		514	fast or be very important.
		515
		516	=cut
		517
		518	sub sync_job(&) {
		519	my ($job) = @_;
		520
		521	if (in_main) {
		522	my $time = AE::time;
		523
		524	# this is the main coro, too bad, we have to block
		525	# till the operation succeeds, freezing the server :/
		526
		527	#LOG llevError, Carp::longmess "sync job";#d#
		528
		529	my $freeze_guard = freeze_mainloop;
		530
		531	my $busy = 1;
		532	my @res;
		533
		534	(async {
		535	$Coro::current->desc ("sync job coro");
		536	@res = eval { $job->() };
		537	error $@ if $@;
		538	undef $busy;
		539	})->prio (Coro::PRIO_MAX);
		540
		541	while ($busy) {
		542	if (Coro::nready) {
		543	Coro::cede_notself;
		544	} else {
		545	EV::loop EV::LOOP_ONESHOT;
		546	}
		547	}
		548
		549	my $time = AE::time - $time;
		550
		551	$TICK_START += $time; # do not account sync jobs to server load
		552
		553	wantarray ? @res : $res[0]
		554	} else {
		555	# we are in another coroutine, how wonderful, everything just works
		556
		557	$job->()
		558	}
		559	}
		560
		561	=item $coro = cf::async_ext { BLOCK }
		562
		563	Like async, but this coro is automatically being canceled when the
		564	extension calling this is being unloaded.
		565
		566	=cut
		567
		568	sub async_ext(&) {
		569	my $cb = shift;
		570
		571	my $coro = &Coro::async ($cb);
		572
		573	$coro->on_destroy (sub {
		574	delete $EXT_CORO{$coro+0};
		575	});
		576	$EXT_CORO{$coro+0} = $coro;
		577
		578	$coro
		579	}
		580
		581	=item fork_call { }, $args
		582
		583	Executes the given code block with the given arguments in a seperate
		584	process, returning the results. Everything must be serialisable with
		585	Coro::Storable. May, of course, block. Note that the executed sub may
		586	never block itself or use any form of event handling.
		587
		588	=cut
		589
		590	sub fork_call(&@) {
		591	my ($cb, @args) = @_;
		592
		593	# we seemingly have to make a local copy of the whole thing,
		594	# otherwise perl prematurely frees the stuff :/
		595	# TODO: investigate and fix (likely this will be rather laborious)
		596
		597	my @res = Coro::Util::fork_eval {
		598	reset_signals;
		599	&$cb
		600	}, @args;
		601
		602	wantarray ? @res : $res[-1]
		603	}
		604
		605	sub objinfo {
		606	(
		607	"counter value" => cf::object::object_count,
		608	"objects created" => cf::object::create_count,
		609	"objects destroyed" => cf::object::destroy_count,
		610	"freelist size" => cf::object::free_count,
		611	"allocated objects" => cf::object::objects_size,
		612	"active objects" => cf::object::actives_size,
		613	)
		614	}
		615
		616	=item $coin = coin_from_name $name
		617
		618	=cut
		619
		620	our %coin_alias = (
		621	"silver" => "silvercoin",
		622	"silvercoin" => "silvercoin",
		623	"silvercoins" => "silvercoin",
		624	"gold" => "goldcoin",
		625	"goldcoin" => "goldcoin",
		626	"goldcoins" => "goldcoin",
		627	"platinum" => "platinacoin",
		628	"platinumcoin" => "platinacoin",
		629	"platinumcoins" => "platinacoin",
		630	"platina" => "platinacoin",
		631	"platinacoin" => "platinacoin",
		632	"platinacoins" => "platinacoin",
		633	"royalty" => "royalty",
		634	"royalties" => "royalty",
		635	);
		636
		637	sub coin_from_name($) {
		638	$coin_alias{$_[0]}
		639	? cf::arch::find $coin_alias{$_[0]}
		640	: undef
		641	}
		642
		643	=item $value = cf::db_get $family => $key
		644
		645	Returns a single value from the environment database.
		646
		647	=item cf::db_put $family => $key => $value
		648
		649	Stores the given C<$value> in the family. It can currently store binary
		650	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		651
		652	=item $db = cf::db_table "name"
		653
		654	Create and/or open a new database table. The string must not be "db" and must be unique
		655	within each server.
		656
		657	=cut
		658
		659	sub db_table($) {
		660	cf::error "db_get called from main context"
		661	if $Coro::current == $Coro::main;
		662
		663	my ($name) = @_;
		664	my $db = BDB::db_create $DB_ENV;
		665
		666	eval {
		667	$db->set_flags (BDB::CHKSUM);
		668
		669	utf8::encode $name;
		670	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		671	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		672	cf::cleanup "db_open(db): $!" if $!;
		673	};
		674	cf::cleanup "db_open(db): $@" if $@;
		675
		676	$db
		677	}
		678
		679	our $DB;
		680
		681	sub db_init {
		682	$DB ||= db_table "db";
		683	}
		684
		685	sub db_get($$) {
		686	my $key = "$_[0]/$_[1]";
		687
		688	cf::error "db_get called from main context"
		689	if $Coro::current == $Coro::main;
		690
		691	BDB::db_get $DB, undef, $key, my $data;
		692
		693	$! ? ()
		694	: $data
		695	}
		696
		697	sub db_put($$$) {
		698	BDB::dbreq_pri 4;
		699	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		700	}
		701
		702	=item cf::cache $id => [$paths...], $processversion => $process
		703
		704	Generic caching function that returns the value of the resource $id,
		705	caching and regenerating as required.
		706
		707	This function can block.
		708
		709	=cut
		710
		711	sub cache {
		712	my ($id, $src, $processversion, $process) = @_;
		713
		714	my $meta =
		715	join "\x00",
		716	$processversion,
		717	map {
		718	aio_stat $_
		719	and Carp::croak "$_: $!";
		720
		721	($_, (stat _)[7,9])
		722	} @$src;
		723
		724	my $dbmeta = db_get cache => "$id/meta";
		725	if ($dbmeta ne $meta) {
		726	# changed, we may need to process
		727
		728	my @data;
		729	my $md5;
		730
		731	for (0 .. $#$src) {
		732	0 <= aio_load $src->[$_], $data[$_]
		733	or Carp::croak "$src->[$_]: $!";
		734	}
		735
		736	# if processing is expensive, check
		737	# checksum first
		738	if (1) {
		739	$md5 =
		740	join "\x00",
		741	$processversion,
		742	map {
		743	cf::cede_to_tick;
		744	($src->[$_], Digest::MD5::md5_hex $data[$_])
		745	} 0.. $#$src;
		746
		747
		748	my $dbmd5 = db_get cache => "$id/md5";
		749	if ($dbmd5 eq $md5) {
		750	db_put cache => "$id/meta", $meta;
		751
		752	return db_get cache => "$id/data";
		753	}
		754	}
		755
		756	my $t1 = Time::HiRes::time;
		757	my $data = $process->(\@data);
		758	my $t2 = Time::HiRes::time;
		759
		760	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		761
		762	db_put cache => "$id/data", $data;
		763	db_put cache => "$id/md5" , $md5;
		764	db_put cache => "$id/meta", $meta;
		765
		766	return $data;
		767	}
		768
		769	db_get cache => "$id/data"
		770	}
		771
		772	=item cf::datalog type => key => value, ...
		773
		774	Log a datalog packet of the given type with the given key-value pairs.
		775
		776	=cut
		777
		778	sub datalog($@) {
		779	my ($type, %kv) = @_;
		780	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		781	}
		782
		783	=back
		784
		785	=cut
106		786
107	#############################################################################	787	#############################################################################
108	# "new" plug-in system
109		788
		789	=head2 ATTACHABLE OBJECTS
		790
		791	Many objects in deliantra are so-called attachable objects. That means you can
		792	attach callbacks/event handlers (a collection of which is called an "attachment")
		793	to it. All such attachable objects support the following methods.
		794
		795	In the following description, CLASS can be any of C<global>, C<object>
		796	C<player>, C<client> or C<map> (i.e. the attachable objects in
		797	Deliantra).
		798
		799	=over 4
		800
110	=item $object->attach ($attachment, key => $value...)	801	=item $attachable->attach ($attachment, key => $value...)
111		802
112	Attach a pre-registered attachment to an object.	803	=item $attachable->detach ($attachment)
113		804
114	=item $player->attach ($attachment, key => $value...)	805	Attach/detach a pre-registered attachment to a specific object and give it
		806	the specified key/value pairs as arguments.
115		807
116	Attach a pre-registered attachment to a player.	808	Example, attach a minesweeper attachment to the given object, making it a
		809	10x10 minesweeper game:
117		810
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	811	$obj->attach (minesweeper => width => 10, height => 10);
119		812
120	Attach a pre-registered attachment to a map.	813	=item $bool = $attachable->attached ($name)
121		814
122	=item cf::attach_global ...	815	Checks wether the named attachment is currently attached to the object.
123		816
124	Attach handlers for global events.	817	=item cf::CLASS->attach ...
125		818
126	This and all following C<attach_*>-functions expect any number of the	819	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	820
		821	Define an anonymous attachment and attach it to all objects of the given
		822	CLASS. See the next function for an explanation of its arguments.
		823
		824	You can attach to global events by using the C<cf::global> class.
		825
		826	Example, log all player logins:
		827
		828	cf::player->attach (
		829	on_login => sub {
		830	my ($pl) = @_;
		831	...
		832	},
		833	);
		834
		835	Example, attach to the jeweler skill:
		836
		837	cf::object->attach (
		838	type => cf::SKILL,
		839	subtype => cf::SK_JEWELER,
		840	on_use_skill => sub {
		841	my ($sk, $ob, $part, $dir, $msg) = @_;
		842	...
		843	},
		844	);
		845
		846	=item cf::CLASS::attachment $name, ...
		847
		848	Register an attachment by C<$name> through which attachable objects of the
		849	given CLASS can refer to this attachment.
		850
		851	Some classes such as deliantra maps and objects can specify attachments
		852	that are attached at load/instantiate time, thus the need for a name.
		853
		854	These calls expect any number of the following handler/hook descriptions:
128		855
129	=over 4	856	=over 4
130		857
131	=item prio => $number	858	=item prio => $number
132		859
…		…
134	by another C<prio> setting). Lower priority handlers get executed	861	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	862	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	863	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	864	unless you know what you are doing.
138		865
		866	=item type => $type
		867
		868	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		869	given type of objects only (the additional parameter C<subtype> can be
		870	used to further limit to the given subtype).
		871
139	=item on_I<event> => \&cb	872	=item on_I<event> => \&cb
140		873
141	Call the given code reference whenever the named event happens (event is	874	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	875	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	876	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	885	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	886	object/class are recognised.
154		887
155	=back	888	=back
156		889
157	=item cf::attach_to_type $object_type, $subtype, ...	890	Example, define an attachment called "sockpuppet" that calls the given
		891	event handler when a monster attacks:
158		892
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	893	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	894	on_skill_attack => sub {
161	type.	895	my ($self, $victim) = @_;
		896	...
		897	}
		898	}
162		899
163	=item cf::attach_to_objects ...	900	=item $attachable->valid
164		901
165	Attach handlers to all objects. Do not use this except for debugging or	902	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	903	C-level object still exists. If you try to access an object that has no
167	the game.	904	valid C counterpart anymore you get an exception at runtime. This method
168		905	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	906	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		907
179	=cut	908	=cut
180		909
181	# the following variables are defined in .xs and must not be re-created	910	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	911	our @CB_GLOBAL = (); # registry for all global events
		912	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	913	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	914	our @CB_PLAYER = ();
		915	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	916	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	917	our @CB_MAP = ();
187		918
188	my %attachment;	919	my %attachment;
189		920
		921	sub cf::attachable::thawer_merge {
		922	# simply override everything except _meta
		923	local $_[0]{_meta};
		924	%{$_[0]} = %{$_[1]};
		925	}
		926
190	sub _attach_cb($\%$$$) {	927	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	928	my ($registry, $event, $prio, $cb) = @_;
192		929
193	use sort 'stable';	930	use sort 'stable';
194		931
195	$cb = [$prio, $cb];	932	$cb = [$prio, $cb];
196		933
197	@{$registry->[$event]} = sort	934	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	935	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	936	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	937	}
		938
		939	# hack
		940	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		941
204	# attach handles attaching event callbacks	942	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	943	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	944	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	945	sub _attach {
208	my ($registry, $klass, @arg) = @_;	946	my ($registry, $klass, @arg) = @_;
209		947
		948	my $object_type;
210	my $prio = 0;	949	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	950	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		951
		952	#TODO: get rid of this hack
		953	if ($attachable_klass{$klass}) {
		954	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		955	}
218		956
219	while (@arg) {	957	while (@arg) {
220	my $type = shift @arg;	958	my $type = shift @arg;
221		959
222	if ($type eq "prio") {	960	if ($type eq "prio") {
223	$prio = shift @arg;	961	$prio = shift @arg;
224		962
		963	} elsif ($type eq "type") {
		964	$object_type = shift @arg;
		965	$registry = $CB_TYPE[$object_type] ||= [];
		966
		967	} elsif ($type eq "subtype") {
		968	defined $object_type or Carp::croak "subtype specified without type";
		969	my $object_subtype = shift @arg;
		970	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		971
225	} elsif ($type eq "package") {	972	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	973	my $pkg = shift @arg;
227		974
228	while (my ($name, $id) = each %cb_id) {	975	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	976	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	977	_attach_cb $registry, $id, $prio, $cb;
231	}	978	}
232	}	979	}
233		980
234	} elsif (exists $cb_id{$type}) {	981	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	982	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		983
237	} elsif (ref $type) {	984	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	985	error "attaching objects not supported, ignoring.\n";
239		986
240	} else {	987	} else {
241	shift @arg;	988	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	989	error "attach argument '$type' not supported, ignoring.\n";
243	}	990	}
244	}	991	}
245
246	\%undo
247	}	992	}
248		993
249	sub _attach_attachment {	994	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	995	my ($obj, $name, %arg) = @_;
251		996
252	my $res;	997	return if exists $obj->{_attachment}{$name};
253		998
254	if (my $attach = $attachment{$name}) {	999	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	1000	my $registry = $obj->registry;
256		1001
257	for (@$attach) {	1002	for (@$attach) {
258	my ($klass, @attach) = @$_;	1003	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	1004	_attach $registry, $klass, @attach;
260	}	1005	}
261		1006
262	$obj->{$name} = \%arg;	1007	$obj->{$name} = \%arg;
263	} else {	1008	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	1009	info "object uses attachment '$name' which is not available, postponing.\n";
265	}	1010	}
266		1011
267	$obj->{_attachment}{$name} = undef;	1012	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	1013	}
272		1014
273	sub cf::object::attach {	1015	sub cf::attachable::attach {
		1016	if (ref $_[0]) {
		1017	_object_attach @_;
		1018	} else {
		1019	_attach shift->_attach_registry, @_;
		1020	}
		1021	_recalc_want;
		1022	};
		1023
		1024	# all those should be optimised
		1025	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	1026	my ($obj, $name) = @_;
275		1027
276	_attach_attachment $obj, $name, %arg;	1028	if (ref $obj) {
277	}	1029	delete $obj->{_attachment}{$name};
		1030	reattach ($obj);
		1031	} else {
		1032	Carp::croak "cannot, currently, detach class attachments";
		1033	}
		1034	_recalc_want;
		1035	};
278		1036
279	sub cf::player::attach {	1037	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	1038	my ($obj, $name) = @_;
281		1039
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	1040	exists $obj->{_attachment}{$name}
283	}	1041	}
284		1042
285	sub cf::map::attach {	1043	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	1044	eval "#line " . __LINE__ . " 'cf.pm'
		1045	sub cf::\L$klass\E::_attach_registry {
		1046	(\\\@CB_$klass, KLASS_$klass)
		1047	}
287		1048
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	1049	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	1050	my \$name = shift;
316		1051
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	1052	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1053	}
		1054	";
		1055	die if $@;
318	}	1056	}
319		1057
320	our $override;	1058	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1059	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		1060
323	sub override {	1061	sub override {
324	$override = 1;	1062	$override = 1;
325	@invoke_results = ();	1063	@INVOKE_RESULTS = (@_);
326	}	1064	}
327		1065
328	sub do_invoke {	1066	sub do_invoke {
329	my $event = shift;	1067	my $event = shift;
330	my $callbacks = shift;	1068	my $callbacks = shift;
331		1069
332	@invoke_results = ();	1070	@INVOKE_RESULTS = ();
333		1071
334	local $override;	1072	local $override;
335		1073
336	for (@$callbacks) {	1074	for (@$callbacks) {
337	eval { &{$_->[1]} };	1075	eval { &{$_->[1]} };
338		1076
339	if ($@) {	1077	if ($@) {
340	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	1078	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	1079	override;
343	}	1080	}
344		1081
345	return 1 if $override;	1082	return 1 if $override;
346	}	1083	}
347		1084
348	0	1085	0
349	}	1086	}
		1087
		1088	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1089
		1090	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1091
		1092	Generate an object-specific event with the given arguments.
		1093
		1094	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1095	removed in future versions), and there is no public API to access override
		1096	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1097
		1098	=back
		1099
		1100	=cut
350		1101
351	#############################################################################	1102	#############################################################################
352	# object support	1103	# object support
353		1104
354	sub instantiate {	1105	sub _object_equal($$);
		1106	sub _object_equal($$) {
		1107	my ($a, $b) = @_;
		1108
		1109	return 0 unless (ref $a) eq (ref $b);
		1110
		1111	if ("HASH" eq ref $a) {
		1112	my @ka = keys %$a;
		1113	my @kb = keys %$b;
		1114
		1115	return 0 if @ka != @kb;
		1116
		1117	for (0 .. $#ka) {
		1118	return 0 unless $ka[$_] eq $kb[$_];
		1119	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1120	}
		1121
		1122	} elsif ("ARRAY" eq ref $a) {
		1123
		1124	return 0 if @$a != @$b;
		1125
		1126	for (0 .. $#$a) {
		1127	return 0 unless _object_equal $a->[$_], $b->[$_];
		1128	}
		1129
		1130	} elsif ($a ne $b) {
		1131	return 0;
		1132	}
		1133
		1134	1
		1135	}
		1136
		1137	our $SLOW_MERGES;#d#
		1138	sub _can_merge {
355	my ($obj, $data) = @_;	1139	my ($ob1, $ob2) = @_;
356		1140
357	$data = from_json $data;	1141	++$SLOW_MERGES;#d#
358		1142
359	for (@$data) {	1143	# we do the slow way here
360	my ($name, $args) = @$_;	1144	return _object_equal $ob1, $ob2
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}	1145	}
365		1146
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	1147	sub reattach {
		1148	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	1149	my ($obj) = @_;
		1150
		1151	# no longer needed after getting rid of delete_package?
		1152	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1153
369	my $registry = $obj->registry;	1154	my $registry = $obj->registry;
370		1155
371	@$registry = ();	1156	@$registry = ();
372		1157
373	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1158	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		1159
375	for my $name (keys %{ $obj->{_attachment} || {} }) {	1160	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	1161	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	1162	for (@$attach) {
378	my ($klass, @attach) = @$_;	1163	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	1164	_attach $registry, $klass, @attach;
380	}	1165	}
381	} else {	1166	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	1167	info "object uses attachment '$name' that is not available, postponing.\n";
383	}	1168	}
384	}	1169	}
385	}	1170	}
386		1171
387	sub object_freezer_save {	1172	cf::attachable->attach (
388	my ($filename, $objs) = @_;
389
390	if (@$objs) {
391	open my $fh, ">:raw", "$filename.pst~";
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;
394	chmod SAVE_MODE, "$filename.pst~";
395	rename "$filename.pst~", "$filename.pst";
396	} else {
397	unlink "$filename.pst";
398	}
399
400	chmod SAVE_MODE, "$filename~";
401	rename "$filename~", $filename;
402	}
403
404	sub object_thawer_load {
405	my ($filename) = @_;
406
407	open my $fh, "<:raw:perlio", "$filename.pst"
408	or return;
409
410	eval { local $/; (Storable::thaw <$fh>)->{objs} }
411	}
412
413	attach_to_objects
414	prio => -1000000,	1173	prio => -1000000,
		1174	on_instantiate => sub {
		1175	my ($obj, $data) = @_;
		1176
		1177	$data = decode_json $data;
		1178
		1179	for (@$data) {
		1180	my ($name, $args) = @$_;
		1181
		1182	$obj->attach ($name, %{$args || {} });
		1183	}
		1184	},
		1185	on_reattach => \&reattach,
415	on_clone => sub {	1186	on_clone => sub {
416	my ($src, $dst) = @_;	1187	my ($src, $dst) = @_;
417		1188
418	@{$dst->registry} = @{$src->registry};	1189	@{$dst->registry} = @{$src->registry};
419		1190
420	%$dst = %$src;	1191	%$dst = %$src;
421		1192
422	%{$dst->{_attachment}} = %{$src->{_attachment}}	1193	%{$dst->{_attachment}} = %{$src->{_attachment}}
423	if exists $src->{_attachment};	1194	if exists $src->{_attachment};
424	},	1195	},
425	;	1196	);
		1197
		1198	sub object_freezer_save {
		1199	my ($filename, $rdata, $objs) = @_;
		1200
		1201	sync_job {
		1202	if (length $$rdata) {
		1203	utf8::decode (my $decname = $filename);
		1204	trace sprintf "saving %s (%d,%d)\n",
		1205	$decname, length $$rdata, scalar @$objs
		1206	if $VERBOSE_IO;
		1207
		1208	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1209	aio_chmod $fh, SAVE_MODE;
		1210	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1211	if ($cf::USE_FSYNC) {
		1212	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1213	aio_fsync $fh;
		1214	}
		1215	aio_close $fh;
		1216
		1217	if (@$objs) {
		1218	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1219	aio_chmod $fh, SAVE_MODE;
		1220	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1221	aio_write $fh, 0, (length $data), $data, 0;
		1222	if ($cf::USE_FSYNC) {
		1223	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1224	aio_fsync $fh;
		1225	}
		1226	aio_close $fh;
		1227	aio_rename "$filename.pst~", "$filename.pst";
		1228	}
		1229	} else {
		1230	aio_unlink "$filename.pst";
		1231	}
		1232
		1233	aio_rename "$filename~", $filename;
		1234
		1235	$filename =~ s%/[^/]+$%%;
		1236	aio_pathsync $filename if $cf::USE_FSYNC;
		1237	} else {
		1238	error "unable to save objects: $filename~: $!\n";
		1239	}
		1240	} else {
		1241	aio_unlink $filename;
		1242	aio_unlink "$filename.pst";
		1243	}
		1244	};
		1245	}
		1246
		1247	sub object_freezer_as_string {
		1248	my ($rdata, $objs) = @_;
		1249
		1250	use Data::Dumper;
		1251
		1252	$$rdata . Dumper $objs
		1253	}
		1254
		1255	sub object_thawer_load {
		1256	my ($filename) = @_;
		1257
		1258	my ($data, $av);
		1259
		1260	(aio_load $filename, $data) >= 0
		1261	or return;
		1262
		1263	unless (aio_stat "$filename.pst") {
		1264	(aio_load "$filename.pst", $av) >= 0
		1265	or return;
		1266
		1267	my $st = eval { Coro::Storable::thaw $av };
		1268	$av = $st->{objs};
		1269	}
		1270
		1271	utf8::decode (my $decname = $filename);
		1272	trace sprintf "loading %s (%d,%d)\n",
		1273	$decname, length $data, scalar @{$av || []}
		1274	if $VERBOSE_IO;
		1275
		1276	($data, $av)
		1277	}
		1278
		1279	=head2 COMMAND CALLBACKS
		1280
		1281	=over 4
		1282
		1283	=cut
426		1284
427	#############################################################################	1285	#############################################################################
428	# old plug-in events	1286	# command handling &c
429		1287
430	sub inject_event {	1288	=item cf::register_command $name => \&callback($ob,$args);
431	my $extension = shift;
432	my $event_code = shift;
433		1289
434	my $cb = $hook[$event_code]{$extension}	1290	Register a callback for execution when the client sends the user command
435	or return;	1291	$name.
436		1292
437	&$cb	1293	=cut
438	}
439
440	sub inject_global_event {
441	my $event = shift;
442
443	my $cb = $hook[$event]
444	or return;
445
446	List::Util::max map &$_, values %$cb
447	}
448
449	sub inject_command {
450	my ($name, $obj, $params) = @_;
451
452	for my $cmd (@{ $command{$name} }) {
453	$cmd->[1]->($obj, $params);
454	}
455
456	-1
457	}
458		1294
459	sub register_command {	1295	sub register_command {
460	my ($name, $time, $cb) = @_;	1296	my ($name, $cb) = @_;
461		1297
462	my $caller = caller;	1298	my $caller = caller;
463	#warn "registering command '$name/$time' to '$caller'";	1299	#warn "registering command '$name/$time' to '$caller'";
464		1300
465	push @{ $command{$name} }, [$time, $cb, $caller];	1301	push @{ $COMMAND{$name} }, [$caller, $cb];
466	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
467	}	1302	}
		1303
		1304	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1305
		1306	Register a callback for execution when the client sends an (synchronous)
		1307	extcmd packet. Ext commands will be processed in the order they are
		1308	received by the server, like other user commands. The first argument is
		1309	the logged-in player. Ext commands can only be processed after a player
		1310	has logged in successfully.
		1311
		1312	If the callback returns something, it is sent back as if reply was being
		1313	called.
		1314
		1315	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1316
		1317	Register a callback for execution when the client sends an (asynchronous)
		1318	exticmd packet. Exti commands are processed by the server as soon as they
		1319	are received, i.e. out of order w.r.t. other commands. The first argument
		1320	is a client socket. Exti commands can be received anytime, even before
		1321	log-in.
		1322
		1323	If the callback returns something, it is sent back as if reply was being
		1324	called.
		1325
		1326	=cut
468		1327
469	sub register_extcmd {	1328	sub register_extcmd {
470	my ($name, $cb) = @_;	1329	my ($name, $cb) = @_;
471		1330
472	my $caller = caller;	1331	$EXTCMD{$name} = $cb;
473	#warn "registering extcmd '$name' to '$caller'";
474
475	$extcmd{$name} = [$cb, $caller];
476	}	1332	}
477		1333
478	sub register {	1334	sub register_exticmd {
479	my ($base, $pkg) = @_;	1335	my ($name, $cb) = @_;
480		1336
481	#TODO	1337	$EXTICMD{$name} = $cb;
482	}	1338	}
483		1339
484	sub load_extension {	1340	use File::Glob ();
485	my ($path) = @_;
486		1341
487	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1342	cf::player->attach (
488	my $base = $1;	1343	on_unknown_command => sub {
489	my $pkg = $1;	1344	my ($pl, $name, $params) = @_;
490	$pkg =~ s/[^[:word:]]/_/g;
491	$pkg = "ext::$pkg";
492		1345
493	warn "loading '$path' into '$pkg'\n";	1346	my $cb = $COMMAND{$name}
		1347	or return;
494		1348
495	open my $fh, "<:utf8", $path	1349	for my $cmd (@$cb) {
496	or die "$path: $!";	1350	$cmd->[1]->($pl->ob, $params);
497
498	my $source =
499	"package $pkg; use strict; use utf8;\n"
500	. "#line 1 \"$path\"\n{\n"
501	. (do { local $/; <$fh> })
502	. "\n};\n1";
503
504	eval $source
505	or die "$path: $@";
506
507	push @exts, $pkg;
508	$ext_pkg{$base} = $pkg;
509
510	# no strict 'refs';
511	# @{"$pkg\::ISA"} = ext::;
512
513	register $base, $pkg;
514	}
515
516	sub unload_extension {
517	my ($pkg) = @_;
518
519	warn "removing extension $pkg\n";
520
521	# remove hooks
522	#TODO
523	# for my $idx (0 .. $#PLUGIN_EVENT) {
524	# delete $hook[$idx]{$pkg};
525	# }
526
527	# remove commands
528	for my $name (keys %command) {
529	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
530
531	if (@cb) {
532	$command{$name} = \@cb;
533	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
534	} else {
535	delete $command{$name};
536	delete $COMMAND{"$name\000"};
537	}
538	}
539
540	# remove extcmds
541	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
542	delete $extcmd{$name};
543	}
544
545	if (my $cb = $pkg->can ("unload")) {
546	eval {
547	$cb->($pkg);
548	1
549	} or warn "$pkg unloaded, but with errors: $@";
550	}
551
552	Symbol::delete_package $pkg;
553	}
554
555	sub load_extensions {
556	my $LIBDIR = maps_directory "perl";
557
558	for my $ext (<$LIBDIR/*.ext>) {
559	next unless -r $ext;
560	eval {
561	load_extension $ext;
562	1
563	} or warn "$ext not loaded: $@";
564	}
565	}
566
567	sub _perl_reload(&) {
568	my ($msg) = @_;
569
570	$msg->("reloading...");
571
572	eval {
573	# 1. cancel all watchers
574	$_->cancel for Event::all_watchers;
575
576	# 2. unload all extensions
577	for (@exts) {
578	$msg->("unloading <$_>");
579	unload_extension $_;
580	}
581
582	# 3. unload all modules loaded from $LIBDIR
583	while (my ($k, $v) = each %INC) {
584	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
585
586	$msg->("removing <$k>");
587	delete $INC{$k};
588
589	$k =~ s/\.pm$//;
590	$k =~ s/\//::/g;
591
592	if (my $cb = $k->can ("unload_module")) {
593	$cb->();
594	}
595
596	Symbol::delete_package $k;
597	}
598
599	# 4. get rid of safe::, as good as possible
600	Symbol::delete_package "safe::$_"
601	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
602
603	# 5. remove register_script_function callbacks
604	# TODO
605
606	# 6. unload cf.pm "a bit"
607	delete $INC{"cf.pm"};
608
609	# don't, removes xs symbols, too,
610	# and global variables created in xs
611	#Symbol::delete_package __PACKAGE__;
612
613	# 7. reload cf.pm
614	$msg->("reloading cf.pm");
615	require cf;
616	};
617	$msg->($@) if $@;
618
619	$msg->("reloaded");
620	};
621
622	sub perl_reload() {
623	_perl_reload {
624	warn $_[0];
625	print "$_[0]\n";
626	};
627	}
628
629	register_command "perl-reload", 0, sub {
630	my ($who, $arg) = @_;
631
632	if ($who->flag (FLAG_WIZ)) {
633	_perl_reload {
634	warn $_[0];
635	$who->message ($_[0]);
636	};	1351	}
		1352
		1353	cf::override;
637	}	1354	},
638	};
639
640	#############################################################################
641	# extcmd framework, basically convert ext <msg>
642	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643
644	attach_to_players
645	on_extcmd => sub {	1355	on_extcmd => sub {
646	my ($pl, $buf) = @_;	1356	my ($pl, $buf) = @_;
647		1357
648	my $msg = eval { from_json $buf };	1358	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
649		1359
650	if (ref $msg) {	1360	if (ref $msg) {
		1361	my ($type, $reply, @payload) =
		1362	"ARRAY" eq ref $msg
		1363	? @$msg
		1364	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1365
		1366	my @reply;
		1367
651	if (my $cb = $extcmd{$msg->{msgtype}}) {	1368	if (my $cb = $EXTCMD{$type}) {
652	if (my %reply = $cb->[0]->($pl, $msg)) {	1369	@reply = $cb->($pl, @payload);
653	$pl->ext_reply ($msg->{msgid}, %reply);	1370	}
		1371
		1372	$pl->ext_reply ($reply, @reply)
		1373	if $reply;
		1374
		1375	} else {
		1376	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1377	}
		1378
		1379	cf::override;
		1380	},
		1381	);
		1382
		1383	# "readahead" all extensions
		1384	sub cache_extensions {
		1385	my $grp = IO::AIO::aio_group;
		1386
		1387	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1388	for (grep /\.ext$/, @{$_[0]}) {
		1389	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1390	}
		1391	};
		1392
		1393	$grp
		1394	}
		1395
		1396	sub load_extensions {
		1397	info "loading extensions...";
		1398
		1399	cf::sync_job {
		1400	my %todo;
		1401
		1402	for my $path (<$LIBDIR/*.ext>) {
		1403	next unless -r $path;
		1404
		1405	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1406	my $base = $1;
		1407	my $pkg = $1;
		1408	$pkg =~ s/[^[:word:]]/_/g;
		1409	$pkg = "ext::$pkg";
		1410
		1411	open my $fh, "<:utf8", $path
		1412	or die "$path: $!";
		1413
		1414	my $source = do { local $/; <$fh> };
		1415
		1416	my %ext = (
		1417	path => $path,
		1418	base => $base,
		1419	pkg => $pkg,
		1420	);
		1421
		1422	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1423	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1424
		1425	$ext{source} =
		1426	"package $pkg; use common::sense;\n"
		1427	. "#line 1 \"$path\"\n{\n"
		1428	. $source
		1429	. "\n};\n1";
		1430
		1431	$todo{$base} = \%ext;
		1432	}
		1433
		1434	my $pass = 0;
		1435	my %done;
		1436	while (%todo) {
		1437	my $progress;
		1438
		1439	++$pass;
		1440
		1441	ext:
		1442	while (my ($k, $v) = each %todo) {
		1443	for (split /,\s*/, $v->{meta}{depends}) {
		1444	next ext
		1445	unless exists $done{$_};
		1446	}
		1447
		1448	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1449
		1450	my $active = eval $v->{source};
		1451
		1452	if (length $@) {
		1453	error "$v->{path}: $@\n";
		1454	undef $@; # work around perl 5.10.0 utf-8 caching bug
		1455
		1456	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1457	if exists $v->{meta}{mandatory};
		1458
		1459	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1460	delete $todo{$k};
		1461	} else {
		1462	$done{$k} = delete $todo{$k};
		1463	push @EXTS, $v->{pkg};
		1464	$progress = 1;
		1465
		1466	info "$v->{base}: extension inactive.\n"
		1467	unless $active;
654	}	1468	}
655	}	1469	}
656	} else {	1470
657	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1471	unless ($progress) {
		1472	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1473
		1474	while (my ($k, $v) = each %todo) {
		1475	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1476	if exists $v->{meta}{mandatory};
		1477	}
658	}	1478	}
659		1479	}
660	cf::override;
661	},	1480	};
662	;	1481	}
663		1482
664	#############################################################################	1483	#############################################################################
665	# load/save/clean perl data associated with a map
666		1484
667	*cf::mapsupport::on_clean = sub {	1485	=back
		1486
		1487	=head2 CORE EXTENSIONS
		1488
		1489	Functions and methods that extend core deliantra objects.
		1490
		1491	=cut
		1492
		1493	package cf::player;
		1494
		1495	use Coro::AIO;
		1496
		1497	=head3 cf::player
		1498
		1499	=over 4
		1500
		1501	=item cf::player::num_playing
		1502
		1503	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1504
		1505	=cut
		1506
		1507	sub num_playing {
		1508	scalar grep
		1509	$_->ob->map
		1510	&& !$_->hidden
		1511	&& !$_->ob->flag (cf::FLAG_WIZ),
		1512	cf::player::list
		1513	}
		1514
		1515	=item cf::player::find $login
		1516
		1517	Returns the given player object, loading it if necessary (might block).
		1518
		1519	=cut
		1520
		1521	sub playerdir($) {
		1522	"$PLAYERDIR/"
		1523	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1524	}
		1525
		1526	sub path($) {
		1527	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1528
		1529	(playerdir $login) . "/playerdata"
		1530	}
		1531
		1532	sub find_active($) {
		1533	$cf::PLAYER{$_[0]}
		1534	and $cf::PLAYER{$_[0]}->active
		1535	and $cf::PLAYER{$_[0]}
		1536	}
		1537
		1538	sub exists($) {
668	my ($map) = @_;	1539	my ($login) = @_;
669		1540
670	my $path = $map->tmpname;	1541	$cf::PLAYER{$login}
671	defined $path or return;	1542	or !aio_stat path $login
672
673	unlink "$path.pst";
674	};
675
676	# old style persistent data, TODO: remove #d#
677	*cf::mapsupport::on_swapin =
678	*cf::mapsupport::on_load = sub {
679	my ($map) = @_;
680
681	my $path = $map->tmpname;
682	$path = $map->path unless defined $path;
683
684	open my $fh, "<:raw", "$path.cfperl"
685	or return; # no perl data
686
687	my $data = Storable::thaw do { local $/; <$fh> };
688
689	$data->{version} <= 1
690	or return; # too new
691
692	$map->_set_obs ($data->{obs});
693	$map->invoke (EVENT_MAP_UPGRADE);
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;
697
698	#############################################################################
699	# load/save perl data associated with player->ob objects
700
701	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_
703	}	1543	}
704		1544
705	attach_to_players	1545	sub find($) {
		1546	return $cf::PLAYER{$_[0]} || do {
		1547	my $login = $_[0];
		1548
		1549	my $guard = cf::lock_acquire "user_find:$login";
		1550
		1551	$cf::PLAYER{$_[0]} || do {
		1552	# rename old playerfiles to new ones
		1553	#TODO: remove when no longer required
		1554	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1555	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1556	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1557	aio_unlink +(playerdir $login) . "/$login.pl";
		1558
		1559	my $f = new_from_file cf::object::thawer path $login
		1560	or return;
		1561
		1562	my $pl = cf::player::load_pl $f
		1563	or return;
		1564
		1565	local $cf::PLAYER_LOADING{$login} = $pl;
		1566	$f->resolve_delayed_derefs;
		1567	$cf::PLAYER{$login} = $pl
		1568	}
		1569	}
		1570	}
		1571
		1572	cf::player->attach (
706	on_load => sub {	1573	on_load => sub {
707	my ($pl, $path) = @_;	1574	my ($pl, $path) = @_;
708		1575
709	for my $o (all_objects $pl->ob) {	1576	# restore slots saved in save, below
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1577	my $slots = delete $pl->{_slots};
711	$o->set_ob_key_value ("_perl_data");
712		1578
713	%$o = %{ Storable::thaw pack "H*", $value };	1579	$pl->ob->current_weapon ($slots->[0]);
		1580	$pl->combat_ob ($slots->[1]);
		1581	$pl->ranged_ob ($slots->[2]);
		1582	},
		1583	);
		1584
		1585	sub save($) {
		1586	my ($pl) = @_;
		1587
		1588	return if $pl->{deny_save};
		1589
		1590	my $path = path $pl;
		1591	my $guard = cf::lock_acquire "user_save:$path";
		1592
		1593	return if $pl->{deny_save};
		1594
		1595	aio_mkdir playerdir $pl, 0770;
		1596	$pl->{last_save} = $cf::RUNTIME;
		1597
		1598	cf::get_slot 0.01;
		1599
		1600	# save slots, to be restored later
		1601	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1602
		1603	$pl->save_pl ($path);
		1604	cf::cede_to_tick;
		1605	}
		1606
		1607	sub new($) {
		1608	my ($login) = @_;
		1609
		1610	my $self = create;
		1611
		1612	$self->ob->name ($login);
		1613	$self->{deny_save} = 1;
		1614
		1615	$cf::PLAYER{$login} = $self;
		1616
		1617	$self
		1618	}
		1619
		1620	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1621
		1622	=cut
		1623
		1624	sub send_msg {
		1625	my $ns = shift->ns
		1626	or return;
		1627	$ns->send_msg (@_);
		1628	}
		1629
		1630	=item $pl->quit_character
		1631
		1632	Nukes the player without looking back. If logged in, the connection will
		1633	be destroyed. May block for a long time.
		1634
		1635	=cut
		1636
		1637	sub quit_character {
		1638	my ($pl) = @_;
		1639
		1640	my $name = $pl->ob->name;
		1641
		1642	$pl->{deny_save} = 1;
		1643	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1644
		1645	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1646	$pl->deactivate;
		1647	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1648	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1649	$pl->ns->destroy if $pl->ns;
		1650
		1651	my $path = playerdir $pl;
		1652	my $temp = "$path~$cf::RUNTIME~deleting~";
		1653	aio_rename $path, $temp;
		1654	delete $cf::PLAYER{$pl->ob->name};
		1655	$pl->destroy;
		1656
		1657	my $prefix = qr<^~\Q$name\E/>;
		1658
		1659	# nuke player maps
		1660	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1661
		1662	IO::AIO::aio_rmtree $temp;
		1663	}
		1664
		1665	=item $pl->kick
		1666
		1667	Kicks a player out of the game. This destroys the connection.
		1668
		1669	=cut
		1670
		1671	sub kick {
		1672	my ($pl, $kicker) = @_;
		1673
		1674	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1675	$pl->killer ("kicked");
		1676	$pl->ns->destroy;
		1677	}
		1678
		1679	=item cf::player::list_logins
		1680
		1681	Returns am arrayref of all valid playernames in the system, can take a
		1682	while and may block, so not sync_job-capable, ever.
		1683
		1684	=cut
		1685
		1686	sub list_logins {
		1687	my $dirs = aio_readdir $PLAYERDIR
		1688	or return [];
		1689
		1690	my @logins;
		1691
		1692	for my $login (@$dirs) {
		1693	my $path = path $login;
		1694
		1695	# a .pst is a dead give-away for a valid player
		1696	# if no pst file found, open and chekc for blocked users
		1697	if (aio_stat "$path.pst") {
		1698	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1699	aio_read $fh, 0, 512, my $buf, 0 or next;
		1700	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1701	}
		1702
		1703	utf8::decode $login;
		1704	push @logins, $login;
		1705	}
		1706
		1707	\@logins
		1708	}
		1709
		1710	=item $player->maps
		1711
		1712	=item cf::player::maps $login
		1713
		1714	Returns an arrayref of map paths that are private for this
		1715	player. May block.
		1716
		1717	=cut
		1718
		1719	sub maps($) {
		1720	my ($pl) = @_;
		1721
		1722	$pl = ref $pl ? $pl->ob->name : $pl;
		1723
		1724	my $files = aio_readdir playerdir $pl
		1725	or return;
		1726
		1727	my @paths;
		1728
		1729	for (@$files) {
		1730	utf8::decode $_;
		1731	next if /\.(?:pl|pst)$/;
		1732	next unless /^$PATH_SEP/o;
		1733
		1734	push @paths, cf::map::normalise "~$pl/$_";
		1735	}
		1736
		1737	\@paths
		1738	}
		1739
		1740	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1741
		1742	Expand deliantra pod fragments into protocol xml.
		1743
		1744	=item $player->ext_reply ($msgid, @msg)
		1745
		1746	Sends an ext reply to the player.
		1747
		1748	=cut
		1749
		1750	sub ext_reply($$@) {
		1751	my ($self, $id, @msg) = @_;
		1752
		1753	$self->ns->ext_reply ($id, @msg)
		1754	}
		1755
		1756	=item $player->ext_msg ($type, @msg)
		1757
		1758	Sends an ext event to the client.
		1759
		1760	=cut
		1761
		1762	sub ext_msg($$@) {
		1763	my ($self, $type, @msg) = @_;
		1764
		1765	$self->ns->ext_msg ($type, @msg);
		1766	}
		1767
		1768	=head3 cf::region
		1769
		1770	=over 4
		1771
		1772	=cut
		1773
		1774	package cf::region;
		1775
		1776	=item cf::region::find_by_path $path
		1777
		1778	Tries to decuce the likely region for a map knowing only its path.
		1779
		1780	=cut
		1781
		1782	sub find_by_path($) {
		1783	my ($path) = @_;
		1784
		1785	$path =~ s/^~[^\/]*//; # skip ~login
		1786
		1787	my ($match, $specificity);
		1788
		1789	for my $region (list) {
		1790	if ($region->{match} && $path =~ $region->{match}) {
		1791	($match, $specificity) = ($region, $region->specificity)
		1792	if $region->specificity > $specificity;
		1793	}
		1794	}
		1795
		1796	$match
		1797	}
		1798
		1799	=back
		1800
		1801	=head3 cf::map
		1802
		1803	=over 4
		1804
		1805	=cut
		1806
		1807	package cf::map;
		1808
		1809	use Fcntl;
		1810	use Coro::AIO;
		1811
		1812	use overload
		1813	'""' => \&as_string,
		1814	fallback => 1;
		1815
		1816	our $MAX_RESET = 3600;
		1817	our $DEFAULT_RESET = 3000;
		1818
		1819	sub generate_random_map {
		1820	my ($self, $rmp) = @_;
		1821
		1822	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1823
		1824	# mit "rum" bekleckern, nicht
		1825	$self->_create_random_map (
		1826	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1827	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle}, $rmp->{miningstyle},
		1828	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1829	$rmp->{exit_on_final_map},
		1830	$rmp->{xsize}, $rmp->{ysize},
		1831	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1832	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1833	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1834	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1835	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1836	(cf::region::find $rmp->{region}), $rmp->{custom}
		1837	)
		1838	}
		1839
		1840	=item cf::map->register ($regex, $prio)
		1841
		1842	Register a handler for the map path matching the given regex at the
		1843	givne priority (higher is better, built-in handlers have priority 0, the
		1844	default).
		1845
		1846	=cut
		1847
		1848	sub register {
		1849	my (undef, $regex, $prio) = @_;
		1850	my $pkg = caller;
		1851
		1852	push @{"$pkg\::ISA"}, __PACKAGE__;
		1853
		1854	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1855	}
		1856
		1857	# also paths starting with '/'
		1858	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1859
		1860	sub thawer_merge {
		1861	my ($self, $merge) = @_;
		1862
		1863	# we have to keep some variables in memory intact
		1864	local $self->{path};
		1865	local $self->{load_path};
		1866
		1867	$self->SUPER::thawer_merge ($merge);
		1868	}
		1869
		1870	sub normalise {
		1871	my ($path, $base) = @_;
		1872
		1873	$path = "$path"; # make sure its a string
		1874
		1875	$path =~ s/\.map$//;
		1876
		1877	# map plan:
		1878	#
		1879	# /! non-realised random map exit (special hack!)
		1880	# {... are special paths that are not being touched
		1881	# ?xxx/... are special absolute paths
		1882	# ?random/... random maps
		1883	# /... normal maps
		1884	# ~user/... per-player map of a specific user
		1885
		1886	$path =~ s/$PATH_SEP/\//go;
		1887
		1888	# treat it as relative path if it starts with
		1889	# something that looks reasonable
		1890	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1891	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1892
		1893	$base =~ s{[^/]+/?$}{};
		1894	$path = "$base/$path";
		1895	}
		1896
		1897	for ($path) {
		1898	redo if s{//}{/};
		1899	redo if s{/\.?/}{/};
		1900	redo if s{/[^/]+/\.\./}{/};
		1901	}
		1902
		1903	$path
		1904	}
		1905
		1906	sub new_from_path {
		1907	my (undef, $path, $base) = @_;
		1908
		1909	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1910
		1911	$path = normalise $path, $base;
		1912
		1913	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1914	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1915	my $self = bless cf::map::new, $pkg;
		1916	$self->{path} = $path; $self->path ($path);
		1917	$self->init; # pass $1 etc.
		1918	return $self;
		1919	}
		1920	}
		1921
		1922	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1923	()
		1924	}
		1925
		1926	sub init {
		1927	my ($self) = @_;
		1928
		1929	$self
		1930	}
		1931
		1932	sub as_string {
		1933	my ($self) = @_;
		1934
		1935	"$self->{path}"
		1936	}
		1937
		1938	# the displayed name, this is a one way mapping
		1939	sub visible_name {
		1940	&as_string
		1941	}
		1942
		1943	# the original (read-only) location
		1944	sub load_path {
		1945	my ($self) = @_;
		1946
		1947	"$MAPDIR/$self->{path}.map"
		1948	}
		1949
		1950	# the temporary/swap location
		1951	sub save_path {
		1952	my ($self) = @_;
		1953
		1954	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1955	"$TMPDIR/$path.map"
		1956	}
		1957
		1958	# the unique path, undef == no special unique path
		1959	sub uniq_path {
		1960	my ($self) = @_;
		1961
		1962	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1963	"$UNIQUEDIR/$path"
		1964	}
		1965
		1966	sub decay_objects {
		1967	my ($self) = @_;
		1968
		1969	return if $self->{deny_reset};
		1970
		1971	$self->do_decay_objects;
		1972	}
		1973
		1974	sub unlink_save {
		1975	my ($self) = @_;
		1976
		1977	utf8::encode (my $save = $self->save_path);
		1978	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1979	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1980	}
		1981
		1982	sub load_header_from($) {
		1983	my ($self, $path) = @_;
		1984
		1985	utf8::encode $path;
		1986	my $f = new_from_file cf::object::thawer $path
		1987	or return;
		1988
		1989	$self->_load_header ($f)
		1990	or return;
		1991
		1992	local $MAP_LOADING{$self->{path}} = $self;
		1993	$f->resolve_delayed_derefs;
		1994
		1995	$self->{load_path} = $path;
		1996
		1997	1
		1998	}
		1999
		2000	sub load_header_orig {
		2001	my ($self) = @_;
		2002
		2003	$self->load_header_from ($self->load_path)
		2004	}
		2005
		2006	sub load_header_temp {
		2007	my ($self) = @_;
		2008
		2009	$self->load_header_from ($self->save_path)
		2010	}
		2011
		2012	sub prepare_temp {
		2013	my ($self) = @_;
		2014
		2015	$self->last_access ((delete $self->{last_access})
		2016	|| $cf::RUNTIME); #d#
		2017	# safety
		2018	$self->{instantiate_time} = $cf::RUNTIME
		2019	if $self->{instantiate_time} > $cf::RUNTIME;
		2020	}
		2021
		2022	sub prepare_orig {
		2023	my ($self) = @_;
		2024
		2025	$self->{load_original} = 1;
		2026	$self->{instantiate_time} = $cf::RUNTIME;
		2027	$self->last_access ($cf::RUNTIME);
		2028	$self->instantiate;
		2029	}
		2030
		2031	sub load_header {
		2032	my ($self) = @_;
		2033
		2034	if ($self->load_header_temp) {
		2035	$self->prepare_temp;
		2036	} else {
		2037	$self->load_header_orig
		2038	or return;
		2039	$self->prepare_orig;
		2040	}
		2041
		2042	$self->{deny_reset} = 1
		2043	if $self->no_reset;
		2044
		2045	$self->default_region (cf::region::find_by_path $self->{path})
		2046	unless $self->default_region;
		2047
		2048	1
		2049	}
		2050
		2051	sub find;
		2052	sub find {
		2053	my ($path, $origin) = @_;
		2054
		2055	$path = normalise $path, $origin && $origin->path;
		2056
		2057	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2058	my $guard2 = cf::lock_acquire "map_find:$path";
		2059
		2060	$cf::MAP{$path} || do {
		2061	my $map = new_from_path cf::map $path
		2062	or return;
		2063
		2064	$map->{last_save} = $cf::RUNTIME;
		2065
		2066	$map->load_header
		2067	or return;
		2068
		2069	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2070	# doing this can freeze the server in a sync job, obviously
		2071	#$cf::WAIT_FOR_TICK->wait;
		2072	undef $guard2;
		2073	undef $guard1;
		2074	$map->reset;
		2075	return find $path;
		2076	}
		2077
		2078	$cf::MAP{$path} = $map
		2079	}
		2080	}
		2081
		2082	sub pre_load { }
		2083	#sub post_load { } # XS
		2084
		2085	sub load {
		2086	my ($self) = @_;
		2087
		2088	local $self->{deny_reset} = 1; # loading can take a long time
		2089
		2090	my $path = $self->{path};
		2091
		2092	{
		2093	my $guard = cf::lock_acquire "map_data:$path";
		2094
		2095	return unless $self->valid;
		2096	return unless $self->in_memory == cf::MAP_SWAPPED;
		2097
		2098	$self->in_memory (cf::MAP_LOADING);
		2099
		2100	$self->alloc;
		2101
		2102	$self->pre_load;
		2103	cf::cede_to_tick;
		2104
		2105	my $f = new_from_file cf::object::thawer $self->{load_path};
		2106	$f->skip_block;
		2107	$self->_load_objects ($f)
		2108	or return;
		2109
		2110	$self->post_load_original
		2111	if delete $self->{load_original};
		2112
		2113	if (my $uniq = $self->uniq_path) {
		2114	utf8::encode $uniq;
		2115	unless (aio_stat $uniq) {
		2116	if (my $f = new_from_file cf::object::thawer $uniq) {
		2117	$self->clear_unique_items;
		2118	$self->_load_objects ($f);
		2119	$f->resolve_delayed_derefs;
		2120	}
714	}	2121	}
715	}	2122	}
		2123
		2124	$f->resolve_delayed_derefs;
		2125
		2126	cf::cede_to_tick;
		2127	# now do the right thing for maps
		2128	$self->link_multipart_objects;
		2129	$self->difficulty ($self->estimate_difficulty)
		2130	unless $self->difficulty;
		2131	cf::cede_to_tick;
		2132
		2133	unless ($self->{deny_activate}) {
		2134	$self->decay_objects;
		2135	$self->fix_auto_apply;
		2136	$self->update_buttons;
		2137	cf::cede_to_tick;
		2138	$self->activate;
		2139	}
		2140
		2141	$self->{last_save} = $cf::RUNTIME;
		2142	$self->last_access ($cf::RUNTIME);
		2143
		2144	$self->in_memory (cf::MAP_ACTIVE);
716	},	2145	}
717	;
718		2146
719	#############################################################################	2147	$self->post_load;
720	# core extensions - in perl
721
722	=item cf::player::exists $login
723
724	Returns true when the given account exists.
725
726	=cut
727
728	sub cf::player::exists($) {
729	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	2148	}
732		2149
		2150	# customize the map for a given player, i.e.
		2151	# return the _real_ map. used by e.g. per-player
		2152	# maps to change the path to ~playername/mappath
		2153	sub customise_for {
		2154	my ($self, $ob) = @_;
		2155
		2156	return find "~" . $ob->name . "/" . $self->{path}
		2157	if $self->per_player;
		2158
		2159	# return find "?party/" . $ob->name . "/" . $self->{path}
		2160	# if $self->per_party;
		2161
		2162	$self
		2163	}
		2164
		2165	# find and load all maps in the 3x3 area around a map
		2166	sub load_neighbours {
		2167	my ($map) = @_;
		2168
		2169	my @neigh; # diagonal neighbours
		2170
		2171	for (0 .. 3) {
		2172	my $neigh = $map->tile_path ($_)
		2173	or next;
		2174	$neigh = find $neigh, $map
		2175	or next;
		2176	$neigh->load;
		2177
		2178	# now find the diagonal neighbours
		2179	push @neigh,
		2180	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2181	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2182	}
		2183
		2184	for (grep defined $_->[0], @neigh) {
		2185	my ($path, $origin) = @$_;
		2186	my $neigh = find $path, $origin
		2187	or next;
		2188	$neigh->load;
		2189	}
		2190	}
		2191
		2192	sub find_sync {
		2193	my ($path, $origin) = @_;
		2194
		2195	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2196	if $Coro::current == $Coro::main;
		2197
		2198	find $path, $origin
		2199	}
		2200
		2201	sub do_load_sync {
		2202	my ($map) = @_;
		2203
		2204	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2205	if $Coro::current == $Coro::main;
		2206
		2207	$map->load;
		2208	}
		2209
		2210	our %MAP_PREFETCH;
		2211	our $MAP_PREFETCHER = undef;
		2212
		2213	sub find_async {
		2214	my ($path, $origin, $load) = @_;
		2215
		2216	$path = normalise $path, $origin && $origin->{path};
		2217
		2218	if (my $map = $cf::MAP{$path}) {
		2219	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2220	}
		2221
		2222	$MAP_PREFETCH{$path} |= $load;
		2223
		2224	$MAP_PREFETCHER ||= cf::async {
		2225	$Coro::current->{desc} = "map prefetcher";
		2226
		2227	while (%MAP_PREFETCH) {
		2228	while (my ($k, $v) = each %MAP_PREFETCH) {
		2229	if (my $map = find $k) {
		2230	$map->load if $v;
		2231	}
		2232
		2233	delete $MAP_PREFETCH{$k};
		2234	}
		2235	}
		2236	undef $MAP_PREFETCHER;
		2237	};
		2238	$MAP_PREFETCHER->prio (6);
		2239
		2240	()
		2241	}
		2242
		2243	# common code, used by both ->save and ->swapout
		2244	sub _save {
		2245	my ($self) = @_;
		2246
		2247	$self->{last_save} = $cf::RUNTIME;
		2248
		2249	return unless $self->dirty;
		2250
		2251	my $save = $self->save_path; utf8::encode $save;
		2252	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2253
		2254	$self->{load_path} = $save;
		2255
		2256	return if $self->{deny_save};
		2257
		2258	local $self->{last_access} = $self->last_access;#d#
		2259
		2260	cf::async {
		2261	$Coro::current->{desc} = "map player save";
		2262	$_->contr->save for $self->players;
		2263	};
		2264
		2265	cf::get_slot 0.02;
		2266
		2267	if ($uniq) {
		2268	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2269	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2270	} else {
		2271	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2272	}
		2273	}
		2274
		2275	sub save {
		2276	my ($self) = @_;
		2277
		2278	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2279
		2280	$self->_save;
		2281	}
		2282
		2283	sub swap_out {
		2284	my ($self) = @_;
		2285
		2286	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2287
		2288	return if $self->in_memory != cf::MAP_ACTIVE;
		2289	return if $self->{deny_save};
		2290	return if $self->players;
		2291
		2292	# first deactivate the map and "unlink" it from the core
		2293	$self->deactivate;
		2294	$_->clear_links_to ($self) for values %cf::MAP;
		2295	$self->in_memory (cf::MAP_SWAPPED);
		2296
		2297	# then atomically save
		2298	$self->_save;
		2299
		2300	# then free the map
		2301	$self->clear;
		2302	}
		2303
		2304	sub reset_at {
		2305	my ($self) = @_;
		2306
		2307	# TODO: safety, remove and allow resettable per-player maps
		2308	return 1e99 if $self->{deny_reset};
		2309
		2310	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2311	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2312
		2313	$time + $to
		2314	}
		2315
		2316	sub should_reset {
		2317	my ($self) = @_;
		2318
		2319	$self->reset_at <= $cf::RUNTIME
		2320	}
		2321
		2322	sub reset {
		2323	my ($self) = @_;
		2324
		2325	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2326
		2327	return if $self->players;
		2328
		2329	cf::trace "resetting map ", $self->path, "\n";
		2330
		2331	$self->in_memory (cf::MAP_SWAPPED);
		2332
		2333	# need to save uniques path
		2334	unless ($self->{deny_save}) {
		2335	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2336
		2337	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2338	if $uniq;
		2339	}
		2340
		2341	delete $cf::MAP{$self->path};
		2342
		2343	$self->deactivate;
		2344	$_->clear_links_to ($self) for values %cf::MAP;
		2345	$self->clear;
		2346
		2347	$self->unlink_save;
		2348	$self->destroy;
		2349	}
		2350
		2351	my $nuke_counter = "aaaa";
		2352
		2353	sub nuke {
		2354	my ($self) = @_;
		2355
		2356	{
		2357	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2358
		2359	delete $cf::MAP{$self->path};
		2360
		2361	$self->unlink_save;
		2362
		2363	bless $self, "cf::map::wrap";
		2364	delete $self->{deny_reset};
		2365	$self->{deny_save} = 1;
		2366	$self->reset_timeout (1);
		2367	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2368
		2369	$cf::MAP{$self->path} = $self;
		2370	}
		2371
		2372	$self->reset; # polite request, might not happen
		2373	}
		2374
		2375	=item $maps = cf::map::tmp_maps
		2376
		2377	Returns an arrayref with all map paths of currently instantiated and saved
		2378	maps. May block.
		2379
		2380	=cut
		2381
		2382	sub tmp_maps() {
		2383	[
		2384	map {
		2385	utf8::decode $_;
		2386	/\.map$/
		2387	? normalise $_
		2388	: ()
		2389	} @{ aio_readdir $TMPDIR or [] }
		2390	]
		2391	}
		2392
		2393	=item $maps = cf::map::random_maps
		2394
		2395	Returns an arrayref with all map paths of currently instantiated and saved
		2396	random maps. May block.
		2397
		2398	=cut
		2399
		2400	sub random_maps() {
		2401	[
		2402	map {
		2403	utf8::decode $_;
		2404	/\.map$/
		2405	? normalise "?random/$_"
		2406	: ()
		2407	} @{ aio_readdir $RANDOMDIR or [] }
		2408	]
		2409	}
		2410
		2411	=item cf::map::unique_maps
		2412
		2413	Returns an arrayref of paths of all shared maps that have
		2414	instantiated unique items. May block.
		2415
		2416	=cut
		2417
		2418	sub unique_maps() {
		2419	[
		2420	map {
		2421	utf8::decode $_;
		2422	s/\.map$//; # TODO future compatibility hack
		2423	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2424	? ()
		2425	: normalise $_
		2426	} @{ aio_readdir $UNIQUEDIR or [] }
		2427	]
		2428	}
		2429
		2430	=item cf::map::static_maps
		2431
		2432	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2433	file in the shared directory excluding F</styles> and F</editor>). May
		2434	block.
		2435
		2436	=cut
		2437
		2438	sub static_maps() {
		2439	my @dirs = "";
		2440	my @maps;
		2441
		2442	while (@dirs) {
		2443	my $dir = shift @dirs;
		2444
		2445	next if $dir eq "/styles" || $dir eq "/editor";
		2446
		2447	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2448	or return;
		2449
		2450	for (@$files) {
		2451	s/\.map$// or next;
		2452	utf8::decode $_;
		2453	push @maps, "$dir/$_";
		2454	}
		2455
		2456	push @dirs, map "$dir/$_", @$dirs;
		2457	}
		2458
		2459	\@maps
		2460	}
		2461
		2462	=back
		2463
		2464	=head3 cf::object
		2465
		2466	=cut
		2467
		2468	package cf::object;
		2469
		2470	=over 4
		2471
		2472	=item $ob->inv_recursive
		2473
		2474	Returns the inventory of the object I<and> their inventories, recursively,
		2475	but I<not> the object itself.
		2476
		2477	=cut
		2478
		2479	sub inv_recursive_;
		2480	sub inv_recursive_ {
		2481	map { $_, inv_recursive_ $_->inv } @_
		2482	}
		2483
		2484	sub inv_recursive {
		2485	inv_recursive_ inv $_[0]
		2486	}
		2487
		2488	=item $ref = $ob->ref
		2489
		2490	Creates and returns a persistent reference to an object that can be stored as a string.
		2491
		2492	=item $ob = cf::object::deref ($refstring)
		2493
		2494	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2495	even if the object actually exists. May block.
		2496
		2497	=cut
		2498
		2499	sub deref {
		2500	my ($ref) = @_;
		2501
		2502	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2503	my ($uuid, $name) = ($1, $2);
		2504	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2505	or return;
		2506	$pl->ob->uuid eq $uuid
		2507	or return;
		2508
		2509	$pl->ob
		2510	} else {
		2511	warn "$ref: cannot resolve object reference\n";
		2512	undef
		2513	}
		2514	}
		2515
		2516	package cf;
		2517
		2518	=back
		2519
		2520	=head3 cf::object::player
		2521
		2522	=over 4
		2523
733	=item $player->reply ($npc, $msg[, $flags])	2524	=item $player_object->reply ($npc, $msg[, $flags])
734		2525
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2526	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	2527	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	2528	dialogue with the given NPC character.
738		2529
739	=cut	2530	=cut
740		2531
		2532	our $SAY_CHANNEL = {
		2533	id => "say",
		2534	title => "Map",
		2535	reply => "say ",
		2536	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2537	};
		2538
		2539	our $CHAT_CHANNEL = {
		2540	id => "chat",
		2541	title => "Chat",
		2542	reply => "chat ",
		2543	tooltip => "Player chat and shouts, global to the server.",
		2544	};
		2545
741	# rough implementation of a future "reply" method that works	2546	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	2547	# with dialog boxes.
		2548	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	2549	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	2550	my ($self, $npc, $msg, $flags) = @_;
745		2551
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2552	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		2553
748	if ($self->{record_replies}) {	2554	if ($self->{record_replies}) {
749	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2555	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2556
750	} else {	2557	} else {
		2558	my $pl = $self->contr;
		2559
		2560	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2561	my $dialog = $pl->{npc_dialog};
		2562	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2563
		2564	} else {
751	$msg = $npc->name . " says: $msg" if $npc;	2565	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	2566	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2567	}
		2568	}
		2569	}
		2570
		2571	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2572
		2573	=cut
		2574
		2575	sub cf::object::send_msg {
		2576	my $pl = shift->contr
		2577	or return;
		2578	$pl->send_msg (@_);
		2579	}
		2580
		2581	=item $player_object->may ("access")
		2582
		2583	Returns wether the given player is authorized to access resource "access"
		2584	(e.g. "command_wizcast").
		2585
		2586	=cut
		2587
		2588	sub cf::object::player::may {
		2589	my ($self, $access) = @_;
		2590
		2591	$self->flag (cf::FLAG_WIZ) ||
		2592	(ref $cf::CFG{"may_$access"}
		2593	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2594	: $cf::CFG{"may_$access"})
		2595	}
		2596
		2597	=item $player_object->enter_link
		2598
		2599	Freezes the player and moves him/her to a special map (C<{link}>).
		2600
		2601	The player should be reasonably safe there for short amounts of time (e.g.
		2602	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2603	though, as the player cannot control the character while it is on the link
		2604	map.
		2605
		2606	Will never block.
		2607
		2608	=item $player_object->leave_link ($map, $x, $y)
		2609
		2610	Moves the player out of the special C<{link}> map onto the specified
		2611	map. If the map is not valid (or omitted), the player will be moved back
		2612	to the location he/she was before the call to C<enter_link>, or, if that
		2613	fails, to the emergency map position.
		2614
		2615	Might block.
		2616
		2617	=cut
		2618
		2619	sub link_map {
		2620	unless ($LINK_MAP) {
		2621	$LINK_MAP = cf::map::find "{link}"
		2622	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2623	$LINK_MAP->load;
		2624	}
		2625
		2626	$LINK_MAP
		2627	}
		2628
		2629	sub cf::object::player::enter_link {
		2630	my ($self) = @_;
		2631
		2632	$self->deactivate_recursive;
		2633
		2634	++$self->{_link_recursion};
		2635
		2636	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2637
		2638	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2639	if $self->map && $self->map->{path} ne "{link}";
		2640
		2641	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2642	}
		2643
		2644	sub cf::object::player::leave_link {
		2645	my ($self, $map, $x, $y) = @_;
		2646
		2647	return unless $self->contr->active;
		2648
		2649	my $link_pos = delete $self->{_link_pos};
		2650
		2651	unless ($map) {
		2652	# restore original map position
		2653	($map, $x, $y) = @{ $link_pos || [] };
		2654	$map = cf::map::find $map;
		2655
		2656	unless ($map) {
		2657	($map, $x, $y) = @$EMERGENCY_POSITION;
		2658	$map = cf::map::find $map
		2659	or die "FATAL: cannot load emergency map\n";
		2660	}
		2661	}
		2662
		2663	($x, $y) = (-1, -1)
		2664	unless (defined $x) && (defined $y);
		2665
		2666	# use -1 or undef as default coordinates, not 0, 0
		2667	($x, $y) = ($map->enter_x, $map->enter_y)
		2668	if $x <= 0 && $y <= 0;
		2669
		2670	$map->load;
		2671	$map->load_neighbours;
		2672
		2673	return unless $self->contr->active;
		2674
		2675	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2676	if ($self->enter_map ($map, $x, $y)) {
		2677	# entering was successful
		2678	delete $self->{_link_recursion};
		2679	# only activate afterwards, to support waiting in hooks
		2680	$self->activate_recursive;
		2681	}
		2682
		2683	}
		2684
		2685	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2686
		2687	Moves the player to the given map-path and coordinates by first freezing
		2688	her, loading and preparing them map, calling the provided $check callback
		2689	that has to return the map if sucecssful, and then unfreezes the player on
		2690	the new (success) or old (failed) map position. In either case, $done will
		2691	be called at the end of this process.
		2692
		2693	Note that $check will be called with a potentially non-loaded map, so if
		2694	it needs a loaded map it has to call C<< ->load >>.
		2695
		2696	=cut
		2697
		2698	our $GOTOGEN;
		2699
		2700	sub cf::object::player::goto {
		2701	my ($self, $path, $x, $y, $check, $done) = @_;
		2702
		2703	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2704	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2705	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2706	($path, $x, $y) = @$EMERGENCY_POSITION;
		2707	}
		2708
		2709	# do generation counting so two concurrent goto's will be executed in-order
		2710	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2711
		2712	$self->enter_link;
		2713
		2714	(async {
		2715	$Coro::current->{desc} = "player::goto $path $x $y";
		2716
		2717	# *tag paths override both path and x|y
		2718	if ($path =~ /^\*(.*)$/) {
		2719	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2720	my $ob = $obs[rand @obs];
		2721
		2722	# see if we actually can go there
		2723	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2724	$ob = $obs[rand @obs];
		2725	} else {
		2726	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2727	}
		2728	# else put us there anyways for now #d#
		2729
		2730	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2731	} else {
		2732	($path, $x, $y) = (undef, undef, undef);
		2733	}
		2734	}
		2735
		2736	my $map = eval {
		2737	my $map = defined $path ? cf::map::find $path : undef;
		2738
		2739	if ($map) {
		2740	$map = $map->customise_for ($self);
		2741	$map = $check->($map, $x, $y, $self) if $check && $map;
		2742	} else {
		2743	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2744	}
		2745
		2746	$map
		2747	};
		2748
		2749	if ($@) {
		2750	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2751	LOG llevError | logBacktrace, Carp::longmess $@;
		2752	}
		2753
		2754	if ($gen == $self->{_goto_generation}) {
		2755	delete $self->{_goto_generation};
		2756	$self->leave_link ($map, $x, $y);
		2757	}
		2758
		2759	$done->($self) if $done;
		2760	})->prio (1);
		2761	}
		2762
		2763	=item $player_object->enter_exit ($exit_object)
		2764
		2765	=cut
		2766
		2767	sub parse_random_map_params {
		2768	my ($spec) = @_;
		2769
		2770	my $rmp = { # defaults
		2771	xsize => (cf::rndm 15, 40),
		2772	ysize => (cf::rndm 15, 40),
		2773	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2774	#layout => string,
753	}	2775	};
754	}
755		2776
		2777	for (split /\n/, $spec) {
		2778	my ($k, $v) = split /\s+/, $_, 2;
		2779
		2780	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2781	}
		2782
		2783	$rmp
		2784	}
		2785
		2786	sub prepare_random_map {
		2787	my ($exit) = @_;
		2788
		2789	# all this does is basically replace the /! path by
		2790	# a new random map path (?random/...) with a seed
		2791	# that depends on the exit object
		2792
		2793	my $rmp = parse_random_map_params $exit->msg;
		2794
		2795	if ($exit->map) {
		2796	$rmp->{region} = $exit->region->name;
		2797	$rmp->{origin_map} = $exit->map->path;
		2798	$rmp->{origin_x} = $exit->x;
		2799	$rmp->{origin_y} = $exit->y;
		2800
		2801	$exit->map->touch;
		2802	}
		2803
		2804	$rmp->{random_seed} ||= $exit->random_seed;
		2805
		2806	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2807	my $md5 = Digest::MD5::md5_hex $data;
		2808	my $meta = "$RANDOMDIR/$md5.meta";
		2809
		2810	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2811	aio_write $fh, 0, (length $data), $data, 0;
		2812	undef $fh;
		2813	aio_rename "$meta~", $meta;
		2814
		2815	my $slaying = "?random/$md5";
		2816
		2817	if ($exit->valid) {
		2818	$exit->slaying ("?random/$md5");
		2819	$exit->msg (undef);
		2820	}
		2821	}
		2822	}
		2823
		2824	sub cf::object::player::enter_exit {
		2825	my ($self, $exit) = @_;
		2826
		2827	return unless $self->type == cf::PLAYER;
		2828
		2829	$self->enter_link;
		2830
		2831	(async {
		2832	$Coro::current->{desc} = "enter_exit";
		2833
		2834	unless (eval {
		2835	$self->deactivate_recursive; # just to be sure
		2836
		2837	# random map handling
		2838	{
		2839	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2840
		2841	prepare_random_map $exit
		2842	if $exit->slaying eq "/!";
		2843	}
		2844
		2845	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2846	my $x = $exit->stats->hp;
		2847	my $y = $exit->stats->sp;
		2848
		2849	$self->goto ($map, $x, $y);
		2850
		2851	# if exit is damned, update players death & WoR home-position
		2852	$self->contr->savebed ($map, $x, $y)
		2853	if $exit->flag (cf::FLAG_DAMNED);
		2854
		2855	1
		2856	}) {
		2857	$self->message ("Something went wrong deep within the deliantra server. "
		2858	. "I'll try to bring you back to the map you were before. "
		2859	. "Please report this to the dungeon master!",
		2860	cf::NDI_UNIQUE | cf::NDI_RED);
		2861
		2862	error "ERROR in enter_exit: $@";
		2863	$self->leave_link;
		2864	}
		2865	})->prio (1);
		2866	}
		2867
		2868	=head3 cf::client
		2869
		2870	=over 4
		2871
		2872	=item $client->send_drawinfo ($text, $flags)
		2873
		2874	Sends a drawinfo packet to the client. Circumvents output buffering so
		2875	should not be used under normal circumstances.
		2876
		2877	=cut
		2878
		2879	sub cf::client::send_drawinfo {
		2880	my ($self, $text, $flags) = @_;
		2881
		2882	utf8::encode $text;
		2883	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2884	}
		2885
		2886	=item $client->send_big_packet ($pkt)
		2887
		2888	Like C<send_packet>, but tries to compress large packets, and fragments
		2889	them as required.
		2890
		2891	=cut
		2892
		2893	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2894
		2895	sub cf::client::send_big_packet {
		2896	my ($self, $pkt) = @_;
		2897
		2898	# try lzf for large packets
		2899	$pkt = "lzf " . Compress::LZF::compress $pkt
		2900	if 1024 <= length $pkt and $self->{can_lzf};
		2901
		2902	# split very large packets
		2903	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2904	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2905	$pkt = "frag";
		2906	}
		2907
		2908	$self->send_packet ($pkt);
		2909	}
		2910
		2911	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2912
		2913	Send a drawinfo or msg packet to the client, formatting the msg for the
		2914	client if neccessary. C<$type> should be a string identifying the type of
		2915	the message, with C<log> being the default. If C<$color> is negative, suppress
		2916	the message unless the client supports the msg packet.
		2917
		2918	=cut
		2919
		2920	# non-persistent channels (usually the info channel)
		2921	our %CHANNEL = (
		2922	"c/motd" => {
		2923	id => "infobox",
		2924	title => "MOTD",
		2925	reply => undef,
		2926	tooltip => "The message of the day",
		2927	},
		2928	"c/identify" => {
		2929	id => "infobox",
		2930	title => "Identify",
		2931	reply => undef,
		2932	tooltip => "Items recently identified",
		2933	},
		2934	"c/examine" => {
		2935	id => "infobox",
		2936	title => "Examine",
		2937	reply => undef,
		2938	tooltip => "Signs and other items you examined",
		2939	},
		2940	"c/shopinfo" => {
		2941	id => "infobox",
		2942	title => "Shop Info",
		2943	reply => undef,
		2944	tooltip => "What your bargaining skill tells you about the shop",
		2945	},
		2946	"c/book" => {
		2947	id => "infobox",
		2948	title => "Book",
		2949	reply => undef,
		2950	tooltip => "The contents of a note or book",
		2951	},
		2952	"c/lookat" => {
		2953	id => "infobox",
		2954	title => "Look",
		2955	reply => undef,
		2956	tooltip => "What you saw there",
		2957	},
		2958	"c/who" => {
		2959	id => "infobox",
		2960	title => "Players",
		2961	reply => undef,
		2962	tooltip => "Shows players who are currently online",
		2963	},
		2964	"c/body" => {
		2965	id => "infobox",
		2966	title => "Body Parts",
		2967	reply => undef,
		2968	tooltip => "Shows which body parts you posess and are available",
		2969	},
		2970	"c/statistics" => {
		2971	id => "infobox",
		2972	title => "Statistics",
		2973	reply => undef,
		2974	tooltip => "Shows your primary statistics",
		2975	},
		2976	"c/skills" => {
		2977	id => "infobox",
		2978	title => "Skills",
		2979	reply => undef,
		2980	tooltip => "Shows your experience per skill and item power",
		2981	},
		2982	"c/shopitems" => {
		2983	id => "infobox",
		2984	title => "Shop Items",
		2985	reply => undef,
		2986	tooltip => "Shows the items currently for sale in this shop",
		2987	},
		2988	"c/resistances" => {
		2989	id => "infobox",
		2990	title => "Resistances",
		2991	reply => undef,
		2992	tooltip => "Shows your resistances",
		2993	},
		2994	"c/pets" => {
		2995	id => "infobox",
		2996	title => "Pets",
		2997	reply => undef,
		2998	tooltip => "Shows information abotu your pets/a specific pet",
		2999	},
		3000	"c/perceiveself" => {
		3001	id => "infobox",
		3002	title => "Perceive Self",
		3003	reply => undef,
		3004	tooltip => "You gained detailed knowledge about yourself",
		3005	},
		3006	"c/uptime" => {
		3007	id => "infobox",
		3008	title => "Uptime",
		3009	reply => undef,
		3010	tooltip => "How long the server has been running since last restart",
		3011	},
		3012	"c/mapinfo" => {
		3013	id => "infobox",
		3014	title => "Map Info",
		3015	reply => undef,
		3016	tooltip => "Information related to the maps",
		3017	},
		3018	"c/party" => {
		3019	id => "party",
		3020	title => "Party",
		3021	reply => "gsay ",
		3022	tooltip => "Messages and chat related to your party",
		3023	},
		3024	"c/death" => {
		3025	id => "death",
		3026	title => "Death",
		3027	reply => undef,
		3028	tooltip => "Reason for and more info about your most recent death",
		3029	},
		3030	"c/say" => $SAY_CHANNEL,
		3031	"c/chat" => $CHAT_CHANNEL,
		3032	);
		3033
		3034	sub cf::client::send_msg {
		3035	my ($self, $channel, $msg, $color, @extra) = @_;
		3036
		3037	$msg = $self->pl->expand_cfpod ($msg)
		3038	unless $color & cf::NDI_VERBATIM;
		3039
		3040	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3041
		3042	# check predefined channels, for the benefit of C
		3043	if ($CHANNEL{$channel}) {
		3044	$channel = $CHANNEL{$channel};
		3045
		3046	$self->ext_msg (channel_info => $channel);
		3047	$channel = $channel->{id};
		3048
		3049	} elsif (ref $channel) {
		3050	# send meta info to client, if not yet sent
		3051	unless (exists $self->{channel}{$channel->{id}}) {
		3052	$self->{channel}{$channel->{id}} = $channel;
		3053	$self->ext_msg (channel_info => $channel);
		3054	}
		3055
		3056	$channel = $channel->{id};
		3057	}
		3058
		3059	return unless @extra || length $msg;
		3060
		3061	# default colour, mask it out
		3062	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3063	if $color & cf::NDI_DEF;
		3064
		3065	my $pkt = "msg "
		3066	. $self->{json_coder}->encode (
		3067	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3068	);
		3069
		3070	$self->send_big_packet ($pkt);
		3071	}
		3072
		3073	=item $client->ext_msg ($type, @msg)
		3074
		3075	Sends an ext event to the client.
		3076
		3077	=cut
		3078
		3079	sub cf::client::ext_msg($$@) {
		3080	my ($self, $type, @msg) = @_;
		3081
		3082	if ($self->extcmd == 2) {
		3083	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3084	} elsif ($self->extcmd == 1) { # TODO: remove
		3085	push @msg, msgtype => "event_$type";
		3086	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3087	}
		3088	}
		3089
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	3090	=item $client->ext_reply ($msgid, @msg)
757		3091
758	Sends an ext reply to the player.	3092	Sends an ext reply to the client.
759		3093
760	=cut	3094	=cut
761		3095
762	sub cf::player::ext_reply($$$%) {	3096	sub cf::client::ext_reply($$@) {
763	my ($self, $id, %msg) = @_;	3097	my ($self, $id, @msg) = @_;
764		3098
765	$msg{msgid} = $id;	3099	if ($self->extcmd == 2) {
766		3100	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
767	$self->send ("ext " . to_json \%msg);	3101	} elsif ($self->extcmd == 1) {
		3102	#TODO: version 1, remove
		3103	unshift @msg, msgtype => "reply", msgid => $id;
		3104	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3105	}
768	}	3106	}
769		3107
770	#############################################################################	3108	=item $success = $client->query ($flags, "text", \&cb)
771	# map scripting support	3109
		3110	Queues a query to the client, calling the given callback with
		3111	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3112	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3113
		3114	Queries can fail, so check the return code. Or don't, as queries will
		3115	become reliable at some point in the future.
		3116
		3117	=cut
		3118
		3119	sub cf::client::query {
		3120	my ($self, $flags, $text, $cb) = @_;
		3121
		3122	return unless $self->state == ST_PLAYING
		3123	|| $self->state == ST_SETUP
		3124	|| $self->state == ST_CUSTOM;
		3125
		3126	$self->state (ST_CUSTOM);
		3127
		3128	utf8::encode $text;
		3129	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3130
		3131	$self->send_packet ($self->{query_queue}[0][0])
		3132	if @{ $self->{query_queue} } == 1;
		3133
		3134	1
		3135	}
		3136
		3137	cf::client->attach (
		3138	on_connect => sub {
		3139	my ($ns) = @_;
		3140
		3141	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3142	},
		3143	on_reply => sub {
		3144	my ($ns, $msg) = @_;
		3145
		3146	# this weird shuffling is so that direct followup queries
		3147	# get handled first
		3148	my $queue = delete $ns->{query_queue}
		3149	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3150
		3151	(shift @$queue)->[1]->($msg);
		3152	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3153
		3154	push @{ $ns->{query_queue} }, @$queue;
		3155
		3156	if (@{ $ns->{query_queue} } == @$queue) {
		3157	if (@$queue) {
		3158	$ns->send_packet ($ns->{query_queue}[0][0]);
		3159	} else {
		3160	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3161	}
		3162	}
		3163	},
		3164	on_exticmd => sub {
		3165	my ($ns, $buf) = @_;
		3166
		3167	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3168
		3169	if (ref $msg) {
		3170	my ($type, $reply, @payload) =
		3171	"ARRAY" eq ref $msg
		3172	? @$msg
		3173	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3174
		3175	my @reply;
		3176
		3177	if (my $cb = $EXTICMD{$type}) {
		3178	@reply = $cb->($ns, @payload);
		3179	}
		3180
		3181	$ns->ext_reply ($reply, @reply)
		3182	if $reply;
		3183
		3184	} else {
		3185	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3186	}
		3187
		3188	cf::override;
		3189	},
		3190	);
		3191
		3192	=item $client->async (\&cb)
		3193
		3194	Create a new coroutine, running the specified callback. The coroutine will
		3195	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3196	or loss of connection).
		3197
		3198	=cut
		3199
		3200	sub cf::client::async {
		3201	my ($self, $cb) = @_;
		3202
		3203	my $coro = &Coro::async ($cb);
		3204
		3205	$coro->on_destroy (sub {
		3206	delete $self->{_coro}{$coro+0};
		3207	});
		3208
		3209	$self->{_coro}{$coro+0} = $coro;
		3210
		3211	$coro
		3212	}
		3213
		3214	cf::client->attach (
		3215	on_client_destroy => sub {
		3216	my ($ns) = @_;
		3217
		3218	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3219	},
		3220	);
		3221
		3222	=back
		3223
		3224
		3225	=head2 SAFE SCRIPTING
		3226
		3227	Functions that provide a safe environment to compile and execute
		3228	snippets of perl code without them endangering the safety of the server
		3229	itself. Looping constructs, I/O operators and other built-in functionality
		3230	is not available in the safe scripting environment, and the number of
		3231	functions and methods that can be called is greatly reduced.
		3232
		3233	=cut
772		3234
773	our $safe = new Safe "safe";	3235	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	3236	our $safe_hole = new Safe::Hole;
775		3237
776	$SIG{FPE} = 'IGNORE';	3238	$SIG{FPE} = 'IGNORE';
777		3239
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3240	$safe->permit_only (Opcode::opset qw(
		3241	:base_core :base_mem :base_orig :base_math :base_loop
		3242	grepstart grepwhile mapstart mapwhile
		3243	sort time
		3244	));
779		3245
780	# here we export the classes and methods available to script code	3246	# here we export the classes and methods available to script code
781		3247
		3248	=pod
		3249
		3250	The following functions and methods are available within a safe environment:
		3251
		3252	cf::object
		3253	contr pay_amount pay_player map x y force_find force_add destroy
		3254	insert remove name archname title slaying race decrease split
		3255	value
		3256
		3257	cf::object::player
		3258	player
		3259
		3260	cf::player
		3261	peaceful
		3262
		3263	cf::map
		3264	trigger
		3265
		3266	=cut
		3267
782	for (	3268	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	3269	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3270	insert remove inv nrof name archname title slaying race
		3271	decrease split destroy change_exp value msg lore send_msg)],
784	["cf::object::player" => qw(player)],	3272	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	3273	["cf::player" => qw(peaceful send_msg)],
		3274	["cf::map" => qw(trigger)],
786	) {	3275	) {
787	no strict 'refs';
788	my ($pkg, @funs) = @$_;	3276	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3277	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	3278	for @funs;
791	}	3279	}
792		3280
		3281	=over 4
		3282
		3283	=item @retval = safe_eval $code, [var => value, ...]
		3284
		3285	Compiled and executes the given perl code snippet. additional var/value
		3286	pairs result in temporary local (my) scalar variables of the given name
		3287	that are available in the code snippet. Example:
		3288
		3289	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3290
		3291	=cut
		3292
793	sub safe_eval($;@) {	3293	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	3294	my ($code, %vars) = @_;
795		3295
796	my $qcode = $code;	3296	my $qcode = $code;
797	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3297	$qcode =~ s/"/‟/g; # not allowed in #line filenames
798	$qcode =~ s/\n/\\n/g;	3298	$qcode =~ s/\n/\\n/g;
799		3299
		3300	%vars = (_dummy => 0) unless %vars;
		3301
		3302	my @res;
800	local $_;	3303	local $_;
801	local @safe::cf::_safe_eval_args = values %vars;
802		3304
803	my $eval =	3305	my $eval =
804	"do {\n"	3306	"do {\n"
805	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3307	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
806	. "#line 0 \"{$qcode}\"\n"	3308	. "#line 0 \"{$qcode}\"\n"
807	. $code	3309	. $code
808	. "\n}"	3310	. "\n}"
809	;	3311	;
810		3312
		3313	if ($CFG{safe_eval}) {
811	sub_generation_inc;	3314	sub_generation_inc;
		3315	local @safe::cf::_safe_eval_args = values %vars;
812	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3316	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
813	sub_generation_inc;	3317	sub_generation_inc;
		3318	} else {
		3319	local @cf::_safe_eval_args = values %vars;
		3320	@res = wantarray ? eval eval : scalar eval $eval;
		3321	}
814		3322
815	if ($@) {	3323	if ($@) {
816	warn "$@";	3324	warn "$@",
817	warn "while executing safe code '$code'\n";	3325	"while executing safe code '$code'\n",
818	warn "with arguments " . (join " ", %vars) . "\n";	3326	"with arguments " . (join " ", %vars) . "\n";
819	}	3327	}
820		3328
821	wantarray ? @res : $res[0]	3329	wantarray ? @res : $res[0]
822	}	3330	}
		3331
		3332	=item cf::register_script_function $function => $cb
		3333
		3334	Register a function that can be called from within map/npc scripts. The
		3335	function should be reasonably secure and should be put into a package name
		3336	like the extension.
		3337
		3338	Example: register a function that gets called whenever a map script calls
		3339	C<rent::overview>, as used by the C<rent> extension.
		3340
		3341	cf::register_script_function "rent::overview" => sub {
		3342	...
		3343	};
		3344
		3345	=cut
823		3346
824	sub register_script_function {	3347	sub register_script_function {
825	my ($fun, $cb) = @_;	3348	my ($fun, $cb) = @_;
826		3349
827	no strict 'refs';	3350	$fun = "safe::$fun" if $CFG{safe_eval};
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3351	*$fun = $safe_hole->wrap ($cb);
829	}	3352	}
		3353
		3354	=back
		3355
		3356	=cut
830		3357
831	#############################################################################	3358	#############################################################################
832	# the server's main()	3359	# the server's init and main functions
		3360
		3361	sub load_facedata($) {
		3362	my ($path) = @_;
		3363
		3364	# HACK to clear player env face cache, we need some signal framework
		3365	# for this (global event?)
		3366	%ext::player_env::MUSIC_FACE_CACHE = ();
		3367
		3368	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3369
		3370	trace "loading facedata from $path\n";
		3371
		3372	my $facedata;
		3373	0 < aio_load $path, $facedata
		3374	or die "$path: $!";
		3375
		3376	$facedata = Coro::Storable::thaw $facedata;
		3377
		3378	$facedata->{version} == 2
		3379	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3380
		3381	# patch in the exptable
		3382	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3383	$facedata->{resource}{"res/exp_table"} = {
		3384	type => FT_RSRC,
		3385	data => $exp_table,
		3386	hash => (Digest::MD5::md5 $exp_table),
		3387	};
		3388	cf::cede_to_tick;
		3389
		3390	{
		3391	my $faces = $facedata->{faceinfo};
		3392
		3393	while (my ($face, $info) = each %$faces) {
		3394	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3395
		3396	cf::face::set_visibility $idx, $info->{visibility};
		3397	cf::face::set_magicmap $idx, $info->{magicmap};
		3398	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3399	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3400
		3401	cf::cede_to_tick;
		3402	}
		3403
		3404	while (my ($face, $info) = each %$faces) {
		3405	next unless $info->{smooth};
		3406
		3407	my $idx = cf::face::find $face
		3408	or next;
		3409
		3410	if (my $smooth = cf::face::find $info->{smooth}) {
		3411	cf::face::set_smooth $idx, $smooth;
		3412	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3413	} else {
		3414	error "smooth face '$info->{smooth}' not found for face '$face'";
		3415	}
		3416
		3417	cf::cede_to_tick;
		3418	}
		3419	}
		3420
		3421	{
		3422	my $anims = $facedata->{animinfo};
		3423
		3424	while (my ($anim, $info) = each %$anims) {
		3425	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3426	cf::cede_to_tick;
		3427	}
		3428
		3429	cf::anim::invalidate_all; # d'oh
		3430	}
		3431
		3432	{
		3433	my $res = $facedata->{resource};
		3434
		3435	while (my ($name, $info) = each %$res) {
		3436	if (defined $info->{type}) {
		3437	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3438
		3439	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3440	cf::face::set_type $idx, $info->{type};
		3441	} else {
		3442	$RESOURCE{$name} = $info; # unused
		3443	}
		3444
		3445	cf::cede_to_tick;
		3446	}
		3447	}
		3448
		3449	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3450
		3451	1
		3452	}
		3453
		3454	register_exticmd fx_want => sub {
		3455	my ($ns, $want) = @_;
		3456
		3457	while (my ($k, $v) = each %$want) {
		3458	$ns->fx_want ($k, $v);
		3459	}
		3460	};
		3461
		3462	sub load_resource_file($) {
		3463	my $guard = lock_acquire "load_resource_file";
		3464
		3465	my $status = load_resource_file_ $_[0];
		3466	get_slot 0.1, 100;
		3467	cf::arch::commit_load;
		3468
		3469	$status
		3470	}
		3471
		3472	sub reload_regions {
		3473	# HACK to clear player env face cache, we need some signal framework
		3474	# for this (global event?)
		3475	%ext::player_env::MUSIC_FACE_CACHE = ();
		3476
		3477	load_resource_file "$MAPDIR/regions"
		3478	or die "unable to load regions file\n";
		3479
		3480	for (cf::region::list) {
		3481	$_->{match} = qr/$_->{match}/
		3482	if exists $_->{match};
		3483	}
		3484	}
		3485
		3486	sub reload_facedata {
		3487	load_facedata "$DATADIR/facedata"
		3488	or die "unable to load facedata\n";
		3489	}
		3490
		3491	sub reload_archetypes {
		3492	load_resource_file "$DATADIR/archetypes"
		3493	or die "unable to load archetypes\n";
		3494	}
		3495
		3496	sub reload_treasures {
		3497	load_resource_file "$DATADIR/treasures"
		3498	or die "unable to load treasurelists\n";
		3499	}
		3500
		3501	sub reload_sound {
		3502	trace "loading sound config from $DATADIR/sound\n";
		3503
		3504	0 < Coro::AIO::aio_load "$DATADIR/sound", my $data
		3505	or die "$DATADIR/sound $!";
		3506
		3507	my $soundconf = JSON::XS->new->utf8->relaxed->decode ($data);
		3508
		3509	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3510	my $sound = $soundconf->{compat}[$_]
		3511	or next;
		3512
		3513	my $face = cf::face::find "sound/$sound->[1]";
		3514	cf::sound::set $sound->[0] => $face;
		3515	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3516	}
		3517
		3518	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3519	my $face = cf::face::find "sound/$v";
		3520	cf::sound::set $k => $face;
		3521	}
		3522	}
		3523
		3524	sub reload_resources {
		3525	trace "reloading resource files...\n";
		3526
		3527	reload_facedata;
		3528	reload_sound;
		3529	reload_archetypes;
		3530	reload_regions;
		3531	reload_treasures;
		3532
		3533	trace "finished reloading resource files\n";
		3534	}
		3535
		3536	sub reload_config {
		3537	trace "reloading config file...\n";
		3538
		3539	open my $fh, "<:utf8", "$CONFDIR/config"
		3540	or return;
		3541
		3542	local $/;
		3543	*CFG = YAML::XS::Load scalar <$fh>;
		3544
		3545	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3546
		3547	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3548	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3549
		3550	if (exists $CFG{mlockall}) {
		3551	eval {
		3552	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3553	and die "WARNING: m(un)lockall failed: $!\n";
		3554	};
		3555	warn $@ if $@;
		3556	}
		3557
		3558	trace "finished reloading resource files\n";
		3559	}
		3560
		3561	sub pidfile() {
		3562	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3563	or die "$PIDFILE: $!";
		3564	flock $fh, &Fcntl::LOCK_EX
		3565	or die "$PIDFILE: flock: $!";
		3566	$fh
		3567	}
		3568
		3569	# make sure only one server instance is running at any one time
		3570	sub atomic {
		3571	my $fh = pidfile;
		3572
		3573	my $pid = <$fh>;
		3574	kill 9, $pid if $pid > 0;
		3575
		3576	seek $fh, 0, 0;
		3577	print $fh $$;
		3578	}
		3579
		3580	sub main_loop {
		3581	trace "EV::loop starting\n";
		3582	if (1) {
		3583	EV::loop;
		3584	}
		3585	trace "EV::loop returned\n";
		3586	goto &main_loop unless $REALLY_UNLOOP;
		3587	}
833		3588
834	sub main {	3589	sub main {
835	Event::loop;	3590	cf::init_globals; # initialise logging
		3591
		3592	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3593	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3594	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3595	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3596
		3597	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3598
		3599	# we must not ever block the main coroutine
		3600	local $Coro::idle = sub {
		3601	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3602	(async {
		3603	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3604	EV::loop EV::LOOP_ONESHOT;
		3605	})->prio (Coro::PRIO_MAX);
		3606	};
		3607
		3608	evthread_start IO::AIO::poll_fileno;
		3609
		3610	cf::sync_job {
		3611	cf::init_experience;
		3612	cf::init_anim;
		3613	cf::init_attackmess;
		3614	cf::init_dynamic;
		3615
		3616	cf::load_settings;
		3617	cf::load_materials;
		3618
		3619	reload_resources;
		3620	reload_config;
		3621	db_init;
		3622
		3623	cf::init_uuid;
		3624	cf::init_signals;
		3625	cf::init_skills;
		3626
		3627	cf::init_beforeplay;
		3628
		3629	atomic;
		3630
		3631	load_extensions;
		3632
		3633	utime time, time, $RUNTIMEFILE;
		3634
		3635	# no (long-running) fork's whatsoever before this point(!)
		3636	use POSIX ();
		3637	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3638
		3639	(pop @POST_INIT)->(0) while @POST_INIT;
		3640	};
		3641
		3642	cf::object::thawer::errors_are_fatal 0;
		3643	info "parse errors in files are no longer fatal from this point on.\n";
		3644
		3645	main_loop;
836	}	3646	}
837		3647
838	#############################################################################	3648	#############################################################################
839	# initialisation	3649	# initialisation and cleanup
840		3650
841	register "<global>", __PACKAGE__;	3651	# install some emergency cleanup handlers
		3652	BEGIN {
		3653	our %SIGWATCHER = ();
		3654	for my $signal (qw(INT HUP TERM)) {
		3655	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3656	cf::cleanup "SIG$signal";
		3657	};
		3658	}
		3659	}
		3660
		3661	sub write_runtime_sync {
		3662	my $t0 = AE::time;
		3663
		3664	# first touch the runtime file to show we are still running:
		3665	# the fsync below can take a very very long time.
		3666
		3667	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3668
		3669	my $guard = cf::lock_acquire "write_runtime";
		3670
		3671	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3672	or return;
		3673
		3674	my $value = $cf::RUNTIME + 90 + 10;
		3675	# 10 is the runtime save interval, for a monotonic clock
		3676	# 60 allows for the watchdog to kill the server.
		3677
		3678	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3679	and return;
		3680
		3681	# always fsync - this file is important
		3682	aio_fsync $fh
		3683	and return;
		3684
		3685	# touch it again to show we are up-to-date
		3686	aio_utime $fh, undef, undef;
		3687
		3688	close $fh
		3689	or return;
		3690
		3691	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3692	and return;
		3693
		3694	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3695
		3696	1
		3697	}
		3698
		3699	our $uuid_lock;
		3700	our $uuid_skip;
		3701
		3702	sub write_uuid_sync($) {
		3703	$uuid_skip ||= $_[0];
		3704
		3705	return if $uuid_lock;
		3706	local $uuid_lock = 1;
		3707
		3708	my $uuid = "$LOCALDIR/uuid";
		3709
		3710	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3711	or return;
		3712
		3713	my $value = uuid_seq uuid_cur;
		3714
		3715	unless ($value) {
		3716	info "cowardly refusing to write zero uuid value!\n";
		3717	return;
		3718	}
		3719
		3720	my $value = uuid_str $value + $uuid_skip;
		3721	$uuid_skip = 0;
		3722
		3723	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3724	and return;
		3725
		3726	# always fsync - this file is important
		3727	aio_fsync $fh
		3728	and return;
		3729
		3730	close $fh
		3731	or return;
		3732
		3733	aio_rename "$uuid~", $uuid
		3734	and return;
		3735
		3736	trace "uuid file written ($value).\n";
		3737
		3738	1
		3739
		3740	}
		3741
		3742	sub write_uuid($$) {
		3743	my ($skip, $sync) = @_;
		3744
		3745	$sync ? write_uuid_sync $skip
		3746	: async { write_uuid_sync $skip };
		3747	}
		3748
		3749	sub emergency_save() {
		3750	my $freeze_guard = cf::freeze_mainloop;
		3751
		3752	info "emergency_perl_save: enter\n";
		3753
		3754	# this is a trade-off: we want to be very quick here, so
		3755	# save all maps without fsync, and later call a global sync
		3756	# (which in turn might be very very slow)
		3757	local $USE_FSYNC = 0;
		3758
		3759	cf::sync_job {
		3760	cf::write_runtime_sync; # external watchdog should not bark
		3761
		3762	# use a peculiar iteration method to avoid tripping on perl
		3763	# refcount bugs in for. also avoids problems with players
		3764	# and maps saved/destroyed asynchronously.
		3765	info "emergency_perl_save: begin player save\n";
		3766	for my $login (keys %cf::PLAYER) {
		3767	my $pl = $cf::PLAYER{$login} or next;
		3768	$pl->valid or next;
		3769	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3770	$pl->save;
		3771	}
		3772	info "emergency_perl_save: end player save\n";
		3773
		3774	cf::write_runtime_sync; # external watchdog should not bark
		3775
		3776	info "emergency_perl_save: begin map save\n";
		3777	for my $path (keys %cf::MAP) {
		3778	my $map = $cf::MAP{$path} or next;
		3779	$map->valid or next;
		3780	$map->save;
		3781	}
		3782	info "emergency_perl_save: end map save\n";
		3783
		3784	cf::write_runtime_sync; # external watchdog should not bark
		3785
		3786	info "emergency_perl_save: begin database checkpoint\n";
		3787	BDB::db_env_txn_checkpoint $DB_ENV;
		3788	info "emergency_perl_save: end database checkpoint\n";
		3789
		3790	info "emergency_perl_save: begin write uuid\n";
		3791	write_uuid_sync 1;
		3792	info "emergency_perl_save: end write uuid\n";
		3793
		3794	cf::write_runtime_sync; # external watchdog should not bark
		3795
		3796	trace "emergency_perl_save: syncing database to disk";
		3797	BDB::db_env_txn_checkpoint $DB_ENV;
		3798
		3799	info "emergency_perl_save: starting sync\n";
		3800	IO::AIO::aio_sync sub {
		3801	info "emergency_perl_save: finished sync\n";
		3802	};
		3803
		3804	cf::write_runtime_sync; # external watchdog should not bark
		3805
		3806	trace "emergency_perl_save: flushing outstanding aio requests";
		3807	while (IO::AIO::nreqs || BDB::nreqs) {
		3808	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3809	}
		3810
		3811	cf::write_runtime_sync; # external watchdog should not bark
		3812	};
		3813
		3814	info "emergency_perl_save: leave\n";
		3815	}
		3816
		3817	sub post_cleanup {
		3818	my ($make_core) = @_;
		3819
		3820	IO::AIO::flush;
		3821
		3822	error Carp::longmess "post_cleanup backtrace"
		3823	if $make_core;
		3824
		3825	my $fh = pidfile;
		3826	unlink $PIDFILE if <$fh> == $$;
		3827	}
		3828
		3829	# a safer delete_package, copied from Symbol
		3830	sub clear_package($) {
		3831	my $pkg = shift;
		3832
		3833	# expand to full symbol table name if needed
		3834	unless ($pkg =~ /^main::.*::$/) {
		3835	$pkg = "main$pkg" if $pkg =~ /^::/;
		3836	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3837	$pkg .= '::' unless $pkg =~ /::$/;
		3838	}
		3839
		3840	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3841	my $stem_symtab = *{$stem}{HASH};
		3842
		3843	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3844	or return;
		3845
		3846	# clear all symbols
		3847	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3848	for my $name (keys %$leaf_symtab) {
		3849	_gv_clear *{"$pkg$name"};
		3850	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3851	}
		3852	}
		3853
		3854	sub do_reload_perl() {
		3855	# can/must only be called in main
		3856	if (in_main) {
		3857	error "can only reload from main coroutine";
		3858	return;
		3859	}
		3860
		3861	return if $RELOAD++;
		3862
		3863	my $t1 = AE::time;
		3864
		3865	while ($RELOAD) {
		3866	info "reloading...";
		3867
		3868	trace "entering sync_job";
		3869
		3870	cf::sync_job {
		3871	cf::emergency_save;
		3872
		3873	trace "cancelling all extension coros";
		3874	$_->cancel for values %EXT_CORO;
		3875	%EXT_CORO = ();
		3876
		3877	trace "removing commands";
		3878	%COMMAND = ();
		3879
		3880	trace "removing ext/exti commands";
		3881	%EXTCMD = ();
		3882	%EXTICMD = ();
		3883
		3884	trace "unloading/nuking all extensions";
		3885	for my $pkg (@EXTS) {
		3886	trace "... unloading $pkg";
		3887
		3888	if (my $cb = $pkg->can ("unload")) {
		3889	eval {
		3890	$cb->($pkg);
		3891	1
		3892	} or error "$pkg unloaded, but with errors: $@";
		3893	}
		3894
		3895	trace "... clearing $pkg";
		3896	clear_package $pkg;
		3897	}
		3898
		3899	trace "unloading all perl modules loaded from $LIBDIR";
		3900	while (my ($k, $v) = each %INC) {
		3901	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3902
		3903	trace "... unloading $k";
		3904	delete $INC{$k};
		3905
		3906	$k =~ s/\.pm$//;
		3907	$k =~ s/\//::/g;
		3908
		3909	if (my $cb = $k->can ("unload_module")) {
		3910	$cb->();
		3911	}
		3912
		3913	clear_package $k;
		3914	}
		3915
		3916	trace "getting rid of safe::, as good as possible";
		3917	clear_package "safe::$_"
		3918	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3919
		3920	trace "unloading cf.pm \"a bit\"";
		3921	delete $INC{"cf.pm"};
		3922	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3923
		3924	# don't, removes xs symbols, too,
		3925	# and global variables created in xs
		3926	#clear_package __PACKAGE__;
		3927
		3928	info "unload completed, starting to reload now";
		3929
		3930	trace "reloading cf.pm";
		3931	require cf;
		3932	cf::_connect_to_perl_1;
		3933
		3934	trace "loading config and database again";
		3935	cf::reload_config;
		3936
		3937	trace "loading extensions";
		3938	cf::load_extensions;
		3939
		3940	if ($REATTACH_ON_RELOAD) {
		3941	trace "reattaching attachments to objects/players";
		3942	_global_reattach; # objects, sockets
		3943	trace "reattaching attachments to maps";
		3944	reattach $_ for values %MAP;
		3945	trace "reattaching attachments to players";
		3946	reattach $_ for values %PLAYER;
		3947	}
		3948
		3949	trace "running post_init jobs";
		3950	(pop @POST_INIT)->(1) while @POST_INIT;
		3951
		3952	trace "leaving sync_job";
		3953
		3954	1
		3955	} or do {
		3956	error $@;
		3957	cf::cleanup "error while reloading, exiting.";
		3958	};
		3959
		3960	info "reloaded";
		3961	--$RELOAD;
		3962	}
		3963
		3964	$t1 = AE::time - $t1;
		3965	info "reload completed in ${t1}s\n";
		3966	};
		3967
		3968	our $RELOAD_WATCHER; # used only during reload
		3969
		3970	sub reload_perl() {
		3971	# doing reload synchronously and two reloads happen back-to-back,
		3972	# coro crashes during coro_state_free->destroy here.
		3973
		3974	$RELOAD_WATCHER ||= cf::async {
		3975	Coro::AIO::aio_wait cache_extensions;
		3976
		3977	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		3978	do_reload_perl;
		3979	undef $RELOAD_WATCHER;
		3980	};
		3981	};
		3982	}
		3983
		3984	register_command "reload" => sub {
		3985	my ($who, $arg) = @_;
		3986
		3987	if ($who->flag (FLAG_WIZ)) {
		3988	$who->message ("reloading server.");
		3989	async {
		3990	$Coro::current->{desc} = "perl_reload";
		3991	reload_perl;
		3992	};
		3993	}
		3994	};
842		3995
843	unshift @INC, $LIBDIR;	3996	unshift @INC, $LIBDIR;
844		3997
845	load_extensions;	3998	my $bug_warning = 0;
846		3999
847	$TICK_WATCHER = Event->timer (	4000	our @WAIT_FOR_TICK;
848	prio => 1,	4001	our @WAIT_FOR_TICK_BEGIN;
849	at => $NEXT_TICK || 1,	4002
850	cb => sub {	4003	sub wait_for_tick {
		4004	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4005
		4006	my $signal = new Coro::Signal;
		4007	push @WAIT_FOR_TICK, $signal;
		4008	$signal->wait;
		4009	}
		4010
		4011	sub wait_for_tick_begin {
		4012	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4013
		4014	my $signal = new Coro::Signal;
		4015	push @WAIT_FOR_TICK_BEGIN, $signal;
		4016	$signal->wait;
		4017	}
		4018
		4019	sub tick {
		4020	if ($Coro::current != $Coro::main) {
		4021	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4022	unless ++$bug_warning > 10;
		4023	return;
		4024	}
		4025
851	cf::server_tick; # one server iteration	4026	cf::server_tick; # one server iteration
852		4027
853	my $NOW = Event::time;	4028	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
854	$NEXT_TICK += $TICK;
855		4029
856	# if we are delayed by four ticks, skip them all	4030	if ($NOW >= $NEXT_RUNTIME_WRITE) {
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	4031	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
858		4032	Coro::async_pool {
859	$TICK_WATCHER->at ($NEXT_TICK);	4033	$Coro::current->{desc} = "runtime saver";
860	$TICK_WATCHER->start;	4034	write_runtime_sync
		4035	or error "ERROR: unable to write runtime file: $!";
		4036	};
861	},	4037	}
862	);
863		4038
864	_reload_2;	4039	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4040	$sig->send;
		4041	}
		4042	while (my $sig = shift @WAIT_FOR_TICK) {
		4043	$sig->send;
		4044	}
		4045
		4046	$LOAD = ($NOW - $TICK_START) / $TICK;
		4047	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4048
		4049	if (0) {
		4050	if ($NEXT_TICK) {
		4051	my $jitter = $TICK_START - $NEXT_TICK;
		4052	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4053	debug "jitter $JITTER\n";#d#
		4054	}
		4055	}
		4056	}
		4057
		4058	{
		4059	# configure BDB
		4060
		4061	BDB::min_parallel 16;
		4062	BDB::max_poll_reqs $TICK * 0.1;
		4063	$AnyEvent::BDB::WATCHER->priority (1);
		4064
		4065	unless ($DB_ENV) {
		4066	$DB_ENV = BDB::db_env_create;
		4067	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4068	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4069	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4070	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4071	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4072
		4073	cf::sync_job {
		4074	eval {
		4075	BDB::db_env_open
		4076	$DB_ENV,
		4077	$BDBDIR,
		4078	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4079	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4080	0666;
		4081
		4082	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		4083	};
		4084
		4085	cf::cleanup "db_env_open(db): $@" if $@;
		4086	};
		4087	}
		4088
		4089	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		4090	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		4091	};
		4092	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		4093	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		4094	};
		4095	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4096	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4097	};
		4098	}
		4099
		4100	{
		4101	# configure IO::AIO
		4102
		4103	IO::AIO::min_parallel 8;
		4104	IO::AIO::max_poll_time $TICK * 0.1;
		4105	undef $AnyEvent::AIO::WATCHER;
		4106	}
		4107
		4108	my $_log_backtrace;
		4109
		4110	sub _log_backtrace {
		4111	my ($msg, @addr) = @_;
		4112
		4113	$msg =~ s/\n//;
		4114
		4115	# limit the # of concurrent backtraces
		4116	if ($_log_backtrace < 2) {
		4117	++$_log_backtrace;
		4118	my $perl_bt = Carp::longmess $msg;
		4119	async {
		4120	$Coro::current->{desc} = "abt $msg";
		4121
		4122	my @bt = fork_call {
		4123	@addr = map { sprintf "%x", $_ } @addr;
		4124	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4125	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4126	or die "addr2line: $!";
		4127
		4128	my @funcs;
		4129	my @res = <$fh>;
		4130	chomp for @res;
		4131	while (@res) {
		4132	my ($func, $line) = splice @res, 0, 2, ();
		4133	push @funcs, "[$func] $line";
		4134	}
		4135
		4136	@funcs
		4137	};
		4138
		4139	LOG llevInfo, "[ABT] $perl_bt\n";
		4140	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4141	LOG llevInfo, "[ABT] $_\n" for @bt;
		4142	--$_log_backtrace;
		4143	};
		4144	} else {
		4145	LOG llevInfo, "[ABT] $msg\n";
		4146	LOG llevInfo, "[ABT] [suppressed]\n";
		4147	}
		4148	}
		4149
		4150	# load additional modules
		4151	require "cf/$_.pm" for @EXTRA_MODULES;
		4152	cf::_connect_to_perl_2;
		4153
		4154	END { cf::emergency_save }
865		4155
866	1	4156	1
867		4157

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