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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.29 by root, Wed Aug 9 10:57:28 2006 UTC vs.
Revision 1.445 by root, Wed Sep 10 18:18:10 2008 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify
		7	# it under the terms of the GNU General Public License as published by
		8	# the Free Software Foundation, either version 3 of the License, or
		9	# (at your 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 GNU General Public License
		17	# along with this program. If not, see <http://www.gnu.org/licenses/>.
		18	#
		19	# The authors can be reached via e-mail to <support@deliantra.net>
		20	#
		21
1	package cf;	22	package cf;
		23
		24	use 5.10.0;
		25	use utf8;
		26	use strict "vars", "subs";
2		27
3	use Symbol;	28	use Symbol;
4	use List::Util;	29	use List::Util;
5	use Storable;	30	use Socket;
		31	use EV;
6	use Opcode;	32	use Opcode;
7	use Safe;	33	use Safe;
8	use Safe::Hole;	34	use Safe::Hole;
		35	use Storable ();
9		36
10	use Event;	37	use Coro ();
11	$Event::Eval = 1; # no idea why this is required, but it is	38	use Coro::State;
		39	use Coro::Handle;
		40	use Coro::EV;
		41	use Coro::AnyEvent;
		42	use Coro::Timer;
		43	use Coro::Signal;
		44	use Coro::Semaphore;
		45	use Coro::AnyEvent;
		46	use Coro::AIO;
		47	use Coro::BDB 1.6;
		48	use Coro::Storable;
		49	use Coro::Util ();
12		50
13	use strict;	51	use JSON::XS 2.01 ();
		52	use BDB ();
		53	use Data::Dumper;
		54	use Digest::MD5;
		55	use Fcntl;
		56	use YAML ();
		57	use IO::AIO ();
		58	use Time::HiRes;
		59	use Compress::LZF;
		60	use Digest::MD5 ();
14		61
15	our %COMMAND;	62	AnyEvent::detect;
		63
		64	# configure various modules to our taste
		65	#
		66	$Storable::canonical = 1; # reduce rsync transfers
		67	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		68	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		69
		70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		73
		74	our %COMMAND = ();
		75	our %COMMAND_TIME = ();
		76
		77	our @EXTS = (); # list of extension package names
		78	our %EXTCMD = ();
		79	our %EXTICMD = ();
		80	our %EXT_CORO = (); # coroutines bound to extensions
		81	our %EXT_MAP = (); # pluggable maps
		82
		83	our $RELOAD; # number of reloads so far
16	our @EVENT;	84	our @EVENT;
17	our %PROP_TYPE;	85
18	our %PROP_IDX;	86	our $CONFDIR = confdir;
19	our $LIBDIR = maps_directory "perl";	87	our $DATADIR = datadir;
		88	our $LIBDIR = "$DATADIR/ext";
		89	our $PODDIR = "$DATADIR/pod";
		90	our $MAPDIR = "$DATADIR/" . mapdir;
		91	our $LOCALDIR = localdir;
		92	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		93	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		94	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		95	our $RANDOMDIR = "$LOCALDIR/random";
		96	our $BDBDIR = "$LOCALDIR/db";
		97	our $PIDFILE = "$LOCALDIR/pid";
		98	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		99
		100	our %RESOURCE;
		101
		102	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		103	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
		104	our $NEXT_TICK;
		105	our $USE_FSYNC = 1; # use fsync to write maps - default off
		106
		107	our $BDB_DEADLOCK_WATCHER;
		108	our $BDB_CHECKPOINT_WATCHER;
		109	our $BDB_TRICKLE_WATCHER;
		110	our $DB_ENV;
		111
		112	our %CFG;
		113
		114	our $UPTIME; $UPTIME ||= time;
		115	our $RUNTIME;
		116	our $NOW;
		117
		118	our (%PLAYER, %PLAYER_LOADING); # all users
		119	our (%MAP, %MAP_LOADING ); # all maps
		120	our $LINK_MAP; # the special {link} map, which is always available
		121
		122	# used to convert map paths into valid unix filenames by replacing / by ∕
		123	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		124
		125	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		126	our $LOADAVG; # same thing, but with alpha-smoothing
		127	our $JITTER; # average jitter
		128	our $TICK_START; # for load detecting purposes
		129
		130	binmode STDOUT;
		131	binmode STDERR;
		132
		133	# read virtual server time, if available
		134	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		135	open my $fh, "<", $RUNTIMEFILE
		136	or die "unable to read $RUNTIMEFILE file: $!";
		137	$RUNTIME = <$fh> + 0.;
		138	}
		139
		140	mkdir $_
		141	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		142
		143	our $EMERGENCY_POSITION;
		144
		145	sub cf::map::normalise;
		146
		147	#############################################################################
		148
		149	=head2 GLOBAL VARIABLES
		150
		151	=over 4
		152
		153	=item $cf::UPTIME
		154
		155	The timestamp of the server start (so not actually an uptime).
		156
		157	=item $cf::RUNTIME
		158
		159	The time this server has run, starts at 0 and is increased by $cf::TICK on
		160	every server tick.
		161
		162	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		163	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		164	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		165
		166	Various directories - "/etc", read-only install directory, perl-library
		167	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		168	unique-items directory, player file directory, random maps directory and
		169	database environment.
		170
		171	=item $cf::NOW
		172
		173	The time of the last (current) server tick.
		174
		175	=item $cf::TICK
		176
		177	The interval between server ticks, in seconds.
		178
		179	=item $cf::LOADAVG
		180
		181	The current CPU load on the server (alpha-smoothed), as a value between 0
		182	(none) and 1 (overloaded), indicating how much time is spent on processing
		183	objects per tick. Healthy values are < 0.5.
		184
		185	=item $cf::LOAD
		186
		187	The raw value load value from the last tick.
		188
		189	=item %cf::CFG
		190
		191	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		192	from wherever your confdir points to.
		193
		194	=item cf::wait_for_tick, cf::wait_for_tick_begin
		195
		196	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		197	returns directly I<after> the tick processing (and consequently, can only wake one process
		198	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		199
		200	=item @cf::INVOKE_RESULTS
		201
		202	This array contains the results of the last C<invoke ()> call. When
		203	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		204	that call.
		205
		206	=back
		207
		208	=cut
20		209
21	BEGIN {	210	BEGIN {
22	@EVENT = map lc, @EVENT;
23
24	*CORE::GLOBAL::warn = sub {	211	*CORE::GLOBAL::warn = sub {
25	my $msg = join "", @_;	212	my $msg = join "", @_;
		213
26	$msg .= "\n"	214	$msg .= "\n"
27	unless $msg =~ /\n$/;	215	unless $msg =~ /\n$/;
28		216
29	print STDERR "cfperl: $msg";	217	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		218
30	LOG llevError, "cfperl: $msg";	219	LOG llevError, $msg;
31	};	220	};
32	}	221	}
33		222
34	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	223	$Coro::State::DIEHOOK = sub {
		224	return unless $^S eq 0; # "eq", not "=="
35		225
36	# generate property mutators	226	if ($Coro::current == $Coro::main) {#d#
37	sub prop_gen {	227	warn "DIEHOOK called in main context, Coro bug?\n";#d#
38	my ($prefix, $class) = @_;	228	return;#d#
		229	}#d#
39		230
40	no strict 'refs';	231	# kill coroutine otherwise
		232	warn Carp::longmess $_[0];
		233	Coro::terminate
		234	};
41		235
42	for my $prop (keys %PROP_TYPE) {	236	$SIG{__DIE__} = sub { }; #d#?
43	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
44	my $sub = lc $1;
45		237
46	my $type = $PROP_TYPE{$prop};	238	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
47	my $idx = $PROP_IDX {$prop};	239	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
48		240	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
49	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	241	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
50	$_[0]->get_property ($type, $idx)	242	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
51	};	243	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
52
53	*{"$class\::set_$sub"} = sub {
54	$_[0]->set_property ($type, $idx, $_[1]);
55	} unless $ignore_set{$prop};
56	}
57	}
58
59	# auto-generate most of the API
60
61	prop_gen OBJECT_PROP => "cf::object";
62	# CFAPI_OBJECT_ANIMATION?
63	prop_gen PLAYER_PROP => "cf::object::player";
64
65	prop_gen MAP_PROP => "cf::map";
66	prop_gen ARCH_PROP => "cf::arch";
67
68	# guessed hierarchies
69
70	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	244	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
71	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
72		245
73	# we bless all objects into derived classes to force a method lookup	246	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	247	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region)) {	248	for my $pkg (qw(
76	no strict 'refs';	249	cf::global cf::attachable
		250	cf::object cf::object::player
		251	cf::client cf::player
		252	cf::arch cf::living
		253	cf::map cf::mapspace
		254	cf::party cf::region
		255	)) {
77	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	256	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	257	}
79		258
80	$Event::DIED = sub {	259	$EV::DIED = sub {
81	warn "error in event callback: @_";	260	warn "error in event callback: @_";
82	};	261	};
83		262
84	my %ext_pkg;	263	#############################################################################
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89		264
90	sub inject_event {	265	=head2 UTILITY FUNCTIONS
91	my $extension = shift;	266
		267	=over 4
		268
		269	=item dumpval $ref
		270
		271	=cut
		272
		273	sub dumpval {
		274	eval {
		275	local $SIG{__DIE__};
		276	my $d;
		277	if (1) {
		278	$d = new Data::Dumper([$_[0]], ["*var"]);
		279	$d->Terse(1);
		280	$d->Indent(2);
		281	$d->Quotekeys(0);
		282	$d->Useqq(1);
		283	#$d->Bless(...);
		284	$d->Seen($_[1]) if @_ > 1;
		285	$d = $d->Dump();
		286	}
		287	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		288	$d
		289	} || "[unable to dump $_[0]: '$@']";
		290	}
		291
		292	=item $ref = cf::decode_json $json
		293
		294	Converts a JSON string into the corresponding perl data structure.
		295
		296	=item $json = cf::encode_json $ref
		297
		298	Converts a perl data structure into its JSON representation.
		299
		300	=cut
		301
		302	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		303
		304	sub encode_json($) { $json_coder->encode ($_[0]) }
		305	sub decode_json($) { $json_coder->decode ($_[0]) }
		306
		307	=item cf::lock_wait $string
		308
		309	Wait until the given lock is available. See cf::lock_acquire.
		310
		311	=item my $lock = cf::lock_acquire $string
		312
		313	Wait until the given lock is available and then acquires it and returns
		314	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		315	for example when the coroutine gets canceled), the lock is automatically
		316	returned.
		317
		318	Locks are *not* recursive, locking from the same coro twice results in a
		319	deadlocked coro.
		320
		321	Lock names should begin with a unique identifier (for example, cf::map::find
		322	uses map_find and cf::map::load uses map_load).
		323
		324	=item $locked = cf::lock_active $string
		325
		326	Return true if the lock is currently active, i.e. somebody has locked it.
		327
		328	=cut
		329
		330	our %LOCK;
		331	our %LOCKER;#d#
		332
		333	sub lock_wait($) {
		334	my ($key) = @_;
		335
		336	if ($LOCKER{$key} == $Coro::current) {#d#
		337	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		338	return;#d#
		339	}#d#
		340
		341	# wait for lock, if any
		342	while ($LOCK{$key}) {
		343	push @{ $LOCK{$key} }, $Coro::current;
		344	Coro::schedule;
		345	}
		346	}
		347
		348	sub lock_acquire($) {
		349	my ($key) = @_;
		350
		351	# wait, to be sure we are not locked
		352	lock_wait $key;
		353
		354	$LOCK{$key} = [];
		355	$LOCKER{$key} = $Coro::current;#d#
		356
		357	Coro::guard {
		358	delete $LOCKER{$key};#d#
		359	# wake up all waiters, to be on the safe side
		360	$_->ready for @{ delete $LOCK{$key} };
		361	}
		362	}
		363
		364	sub lock_active($) {
		365	my ($key) = @_;
		366
		367	! ! $LOCK{$key}
		368	}
		369
		370	sub freeze_mainloop {
		371	tick_inhibit_inc;
		372
		373	Coro::guard \&tick_inhibit_dec;
		374	}
		375
		376	=item cf::periodic $interval, $cb
		377
		378	Like EV::periodic, but randomly selects a starting point so that the actions
		379	get spread over timer.
		380
		381	=cut
		382
		383	sub periodic($$) {
		384	my ($interval, $cb) = @_;
		385
		386	my $start = rand List::Util::min 180, $interval;
		387
		388	EV::periodic $start, $interval, 0, $cb
		389	}
		390
		391	=item cf::get_slot $time[, $priority[, $name]]
		392
		393	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		394	This call blocks and returns only when you have at least C<$time> seconds
		395	of cpu time till the next tick. The slot is only valid till the next cede.
		396
		397	The optional C<$name> can be used to identify the job to run. It might be
		398	used for statistical purposes and should identify the same time-class.
		399
		400	Useful for short background jobs.
		401
		402	=cut
		403
		404	our @SLOT_QUEUE;
		405	our $SLOT_QUEUE;
		406
		407	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		408	$SLOT_QUEUE = Coro::async {
		409	$Coro::current->desc ("timeslot manager");
		410
		411	my $signal = new Coro::Signal;
		412
		413	while () {
		414	next_job:
		415	my $avail = cf::till_tick;
		416	if ($avail > 0.01) {
		417	for (0 .. $#SLOT_QUEUE) {
		418	if ($SLOT_QUEUE[$_][0] < $avail) {
		419	my $job = splice @SLOT_QUEUE, $_, 1, ();
		420	$job->[2]->send;
		421	Coro::cede;
		422	goto next_job;
		423	}
		424	}
		425	}
		426
		427	if (@SLOT_QUEUE) {
		428	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		429	push @cf::WAIT_FOR_TICK, $signal;
		430	$signal->wait;
		431	} else {
		432	Coro::schedule;
		433	}
		434	}
		435	};
		436
		437	sub get_slot($;$$) {
		438	return if tick_inhibit || $Coro::current == $Coro::main;
		439
		440	my ($time, $pri, $name) = @_;
		441
		442	$time = $TICK * .6 if $time > $TICK * .6;
		443	my $sig = new Coro::Signal;
		444
		445	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		446	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		447	$SLOT_QUEUE->ready;
		448	$sig->wait;
		449	}
		450
		451	=item cf::async { BLOCK }
		452
		453	Currently the same as Coro::async_pool, meaning you cannot use
		454	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		455	thing you are allowed to do is call C<prio> on it.
		456
		457	=cut
		458
		459	BEGIN { *async = \&Coro::async_pool }
		460
		461	=item cf::sync_job { BLOCK }
		462
		463	The design of Deliantra requires that the main coroutine ($Coro::main)
		464	is always able to handle events or runnable, as Deliantra is only
		465	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		466	acceptable.
		467
		468	If it must be done, put the blocking parts into C<sync_job>. This will run
		469	the given BLOCK in another coroutine while waiting for the result. The
		470	server will be frozen during this time, so the block should either finish
		471	fast or be very important.
		472
		473	=cut
		474
		475	sub sync_job(&) {
		476	my ($job) = @_;
		477
		478	if ($Coro::current == $Coro::main) {
		479	my $time = EV::time;
		480
		481	# this is the main coro, too bad, we have to block
		482	# till the operation succeeds, freezing the server :/
		483
		484	LOG llevError, Carp::longmess "sync job";#d#
		485
		486	my $freeze_guard = freeze_mainloop;
		487
		488	my $busy = 1;
		489	my @res;
		490
		491	(async {
		492	$Coro::current->desc ("sync job coro");
		493	@res = eval { $job->() };
		494	warn $@ if $@;
		495	undef $busy;
		496	})->prio (Coro::PRIO_MAX);
		497
		498	while ($busy) {
		499	if (Coro::nready) {
		500	Coro::cede_notself;
		501	} else {
		502	EV::loop EV::LOOP_ONESHOT;
		503	}
		504	}
		505
		506	my $time = EV::time - $time;
		507
		508	$TICK_START += $time; # do not account sync jobs to server load
		509
		510	wantarray ? @res : $res[0]
		511	} else {
		512	# we are in another coroutine, how wonderful, everything just works
		513
		514	$job->()
		515	}
		516	}
		517
		518	=item $coro = cf::async_ext { BLOCK }
		519
		520	Like async, but this coro is automatically being canceled when the
		521	extension calling this is being unloaded.
		522
		523	=cut
		524
		525	sub async_ext(&) {
		526	my $cb = shift;
		527
		528	my $coro = &Coro::async ($cb);
		529
		530	$coro->on_destroy (sub {
		531	delete $EXT_CORO{$coro+0};
		532	});
		533	$EXT_CORO{$coro+0} = $coro;
		534
		535	$coro
		536	}
		537
		538	=item fork_call { }, $args
		539
		540	Executes the given code block with the given arguments in a seperate
		541	process, returning the results. Everything must be serialisable with
		542	Coro::Storable. May, of course, block. Note that the executed sub may
		543	never block itself or use any form of event handling.
		544
		545	=cut
		546
		547	sub fork_call(&@) {
		548	my ($cb, @args) = @_;
		549
		550	# we seemingly have to make a local copy of the whole thing,
		551	# otherwise perl prematurely frees the stuff :/
		552	# TODO: investigate and fix (likely this will be rather laborious)
		553
		554	my @res = Coro::Util::fork_eval {
		555	reset_signals;
		556	&$cb
		557	}, @args;
		558
		559	wantarray ? @res : $res[-1]
		560	}
		561
		562	=item $coin = coin_from_name $name
		563
		564	=cut
		565
		566	our %coin_alias = (
		567	"silver" => "silvercoin",
		568	"silvercoin" => "silvercoin",
		569	"silvercoins" => "silvercoin",
		570	"gold" => "goldcoin",
		571	"goldcoin" => "goldcoin",
		572	"goldcoins" => "goldcoin",
		573	"platinum" => "platinacoin",
		574	"platinumcoin" => "platinacoin",
		575	"platinumcoins" => "platinacoin",
		576	"platina" => "platinacoin",
		577	"platinacoin" => "platinacoin",
		578	"platinacoins" => "platinacoin",
		579	"royalty" => "royalty",
		580	"royalties" => "royalty",
		581	);
		582
		583	sub coin_from_name($) {
		584	$coin_alias{$_[0]}
		585	? cf::arch::find $coin_alias{$_[0]}
		586	: undef
		587	}
		588
		589	=item $value = cf::db_get $family => $key
		590
		591	Returns a single value from the environment database.
		592
		593	=item cf::db_put $family => $key => $value
		594
		595	Stores the given C<$value> in the family. It can currently store binary
		596	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		597
		598	=item $db = cf::db_table "name"
		599
		600	Create and/or open a new database table. The string must not be "db" and must be unique
		601	within each server.
		602
		603	=cut
		604
		605	sub db_table($) {
		606	my ($name) = @_;
		607	my $db = BDB::db_create $DB_ENV;
		608
		609	eval {
		610	$db->set_flags (BDB::CHKSUM);
		611
		612	utf8::encode $name;
		613	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		614	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		615	cf::cleanup "db_open(db): $!" if $!;
		616	};
		617	cf::cleanup "db_open(db): $@" if $@;
		618
		619	$db
		620	}
		621
		622	our $DB;
		623
		624	sub db_init {
		625	cf::sync_job {
		626	$DB ||= db_table "db";
		627	};
		628	}
		629
		630	sub db_get($$) {
		631	my $key = "$_[0]/$_[1]";
		632
		633	cf::sync_job {
		634	BDB::db_get $DB, undef, $key, my $data;
		635
		636	$! ? ()
		637	: $data
		638	}
		639	}
		640
		641	sub db_put($$$) {
		642	BDB::dbreq_pri 4;
		643	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		644	}
		645
		646	=item cf::cache $id => [$paths...], $processversion => $process
		647
		648	Generic caching function that returns the value of the resource $id,
		649	caching and regenerating as required.
		650
		651	This function can block.
		652
		653	=cut
		654
		655	sub cache {
		656	my ($id, $src, $processversion, $process) = @_;
		657
		658	my $meta =
		659	join "\x00",
		660	$processversion,
		661	map {
		662	aio_stat $_
		663	and Carp::croak "$_: $!";
		664
		665	($_, (stat _)[7,9])
		666	} @$src;
		667
		668	my $dbmeta = db_get cache => "$id/meta";
		669	if ($dbmeta ne $meta) {
		670	# changed, we may need to process
		671
		672	my @data;
		673	my $md5;
		674
		675	for (0 .. $#$src) {
		676	0 <= aio_load $src->[$_], $data[$_]
		677	or Carp::croak "$src->[$_]: $!";
		678	}
		679
		680	# if processing is expensive, check
		681	# checksum first
		682	if (1) {
		683	$md5 =
		684	join "\x00",
		685	$processversion,
		686	map {
		687	cf::cede_to_tick;
		688	($src->[$_], Digest::MD5::md5_hex $data[$_])
		689	} 0.. $#$src;
		690
		691
		692	my $dbmd5 = db_get cache => "$id/md5";
		693	if ($dbmd5 eq $md5) {
		694	db_put cache => "$id/meta", $meta;
		695
		696	return db_get cache => "$id/data";
		697	}
		698	}
		699
		700	my $t1 = Time::HiRes::time;
		701	my $data = $process->(\@data);
		702	my $t2 = Time::HiRes::time;
		703
		704	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		705
		706	db_put cache => "$id/data", $data;
		707	db_put cache => "$id/md5" , $md5;
		708	db_put cache => "$id/meta", $meta;
		709
		710	return $data;
		711	}
		712
		713	db_get cache => "$id/data"
		714	}
		715
		716	=item cf::datalog type => key => value, ...
		717
		718	Log a datalog packet of the given type with the given key-value pairs.
		719
		720	=cut
		721
		722	sub datalog($@) {
		723	my ($type, %kv) = @_;
		724	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		725	}
		726
		727	=back
		728
		729	=cut
		730
		731	#############################################################################
		732
		733	=head2 ATTACHABLE OBJECTS
		734
		735	Many objects in crossfire are so-called attachable objects. That means you can
		736	attach callbacks/event handlers (a collection of which is called an "attachment")
		737	to it. All such attachable objects support the following methods.
		738
		739	In the following description, CLASS can be any of C<global>, C<object>
		740	C<player>, C<client> or C<map> (i.e. the attachable objects in
		741	Deliantra).
		742
		743	=over 4
		744
		745	=item $attachable->attach ($attachment, key => $value...)
		746
		747	=item $attachable->detach ($attachment)
		748
		749	Attach/detach a pre-registered attachment to a specific object and give it
		750	the specified key/value pairs as arguments.
		751
		752	Example, attach a minesweeper attachment to the given object, making it a
		753	10x10 minesweeper game:
		754
		755	$obj->attach (minesweeper => width => 10, height => 10);
		756
		757	=item $bool = $attachable->attached ($name)
		758
		759	Checks wether the named attachment is currently attached to the object.
		760
		761	=item cf::CLASS->attach ...
		762
		763	=item cf::CLASS->detach ...
		764
		765	Define an anonymous attachment and attach it to all objects of the given
		766	CLASS. See the next function for an explanation of its arguments.
		767
		768	You can attach to global events by using the C<cf::global> class.
		769
		770	Example, log all player logins:
		771
		772	cf::player->attach (
		773	on_login => sub {
		774	my ($pl) = @_;
		775	...
		776	},
		777	);
		778
		779	Example, attach to the jeweler skill:
		780
		781	cf::object->attach (
		782	type => cf::SKILL,
		783	subtype => cf::SK_JEWELER,
		784	on_use_skill => sub {
		785	my ($sk, $ob, $part, $dir, $msg) = @_;
		786	...
		787	},
		788	);
		789
		790	=item cf::CLASS::attachment $name, ...
		791
		792	Register an attachment by C<$name> through which attachable objects of the
		793	given CLASS can refer to this attachment.
		794
		795	Some classes such as crossfire maps and objects can specify attachments
		796	that are attached at load/instantiate time, thus the need for a name.
		797
		798	These calls expect any number of the following handler/hook descriptions:
		799
		800	=over 4
		801
		802	=item prio => $number
		803
		804	Set the priority for all following handlers/hooks (unless overwritten
		805	by another C<prio> setting). Lower priority handlers get executed
		806	earlier. The default priority is C<0>, and many built-in handlers are
		807	registered at priority C<-1000>, so lower priorities should not be used
		808	unless you know what you are doing.
		809
		810	=item type => $type
		811
		812	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		813	given type of objects only (the additional parameter C<subtype> can be
		814	used to further limit to the given subtype).
		815
		816	=item on_I<event> => \&cb
		817
		818	Call the given code reference whenever the named event happens (event is
		819	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		820	handlers are recognised generally depends on the type of object these
		821	handlers attach to).
		822
		823	See F<include/eventinc.h> for the full list of events supported, and their
		824	class.
		825
		826	=item package => package::
		827
		828	Look for sub functions of the name C<< on_I<event> >> in the given
		829	package and register them. Only handlers for eevents supported by the
		830	object/class are recognised.
		831
		832	=back
		833
		834	Example, define an attachment called "sockpuppet" that calls the given
		835	event handler when a monster attacks:
		836
		837	cf::object::attachment sockpuppet =>
		838	on_skill_attack => sub {
		839	my ($self, $victim) = @_;
		840	...
		841	}
		842	}
		843
		844	=item $attachable->valid
		845
		846	Just because you have a perl object does not mean that the corresponding
		847	C-level object still exists. If you try to access an object that has no
		848	valid C counterpart anymore you get an exception at runtime. This method
		849	can be used to test for existence of the C object part without causing an
		850	exception.
		851
		852	=cut
		853
		854	# the following variables are defined in .xs and must not be re-created
		855	our @CB_GLOBAL = (); # registry for all global events
		856	our @CB_ATTACHABLE = (); # registry for all attachables
		857	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		858	our @CB_PLAYER = ();
		859	our @CB_CLIENT = ();
		860	our @CB_TYPE = (); # registry for type (cf-object class) based events
		861	our @CB_MAP = ();
		862
		863	my %attachment;
		864
		865	sub cf::attachable::thawer_merge {
		866	# simply override everything except _meta
		867	local $_[0]{_meta};
		868	%{$_[0]} = %{$_[1]};
		869	}
		870
		871	sub _attach_cb($$$$) {
		872	my ($registry, $event, $prio, $cb) = @_;
		873
		874	use sort 'stable';
		875
		876	$cb = [$prio, $cb];
		877
		878	@{$registry->[$event]} = sort
		879	{ $a->[0] cmp $b->[0] }
		880	@{$registry->[$event] || []}, $cb;
		881	}
		882
		883	# hack
		884	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		885
		886	# attach handles attaching event callbacks
		887	# the only thing the caller has to do is pass the correct
		888	# registry (== where the callback attaches to).
		889	sub _attach {
		890	my ($registry, $klass, @arg) = @_;
		891
		892	my $object_type;
		893	my $prio = 0;
		894	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		895
		896	#TODO: get rid of this hack
		897	if ($attachable_klass{$klass}) {
		898	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		899	}
		900
		901	while (@arg) {
		902	my $type = shift @arg;
		903
		904	if ($type eq "prio") {
		905	$prio = shift @arg;
		906
		907	} elsif ($type eq "type") {
		908	$object_type = shift @arg;
		909	$registry = $CB_TYPE[$object_type] ||= [];
		910
		911	} elsif ($type eq "subtype") {
		912	defined $object_type or Carp::croak "subtype specified without type";
		913	my $object_subtype = shift @arg;
		914	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		915
		916	} elsif ($type eq "package") {
		917	my $pkg = shift @arg;
		918
		919	while (my ($name, $id) = each %cb_id) {
		920	if (my $cb = $pkg->can ($name)) {
		921	_attach_cb $registry, $id, $prio, $cb;
		922	}
		923	}
		924
		925	} elsif (exists $cb_id{$type}) {
		926	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		927
		928	} elsif (ref $type) {
		929	warn "attaching objects not supported, ignoring.\n";
		930
		931	} else {
		932	shift @arg;
		933	warn "attach argument '$type' not supported, ignoring.\n";
		934	}
		935	}
		936	}
		937
		938	sub _object_attach {
		939	my ($obj, $name, %arg) = @_;
		940
		941	return if exists $obj->{_attachment}{$name};
		942
		943	if (my $attach = $attachment{$name}) {
		944	my $registry = $obj->registry;
		945
		946	for (@$attach) {
		947	my ($klass, @attach) = @$_;
		948	_attach $registry, $klass, @attach;
		949	}
		950
		951	$obj->{$name} = \%arg;
		952	} else {
		953	warn "object uses attachment '$name' which is not available, postponing.\n";
		954	}
		955
		956	$obj->{_attachment}{$name} = undef;
		957	}
		958
		959	sub cf::attachable::attach {
		960	if (ref $_[0]) {
		961	_object_attach @_;
		962	} else {
		963	_attach shift->_attach_registry, @_;
		964	}
		965	_recalc_want;
		966	};
		967
		968	# all those should be optimised
		969	sub cf::attachable::detach {
		970	my ($obj, $name) = @_;
		971
		972	if (ref $obj) {
		973	delete $obj->{_attachment}{$name};
		974	reattach ($obj);
		975	} else {
		976	Carp::croak "cannot, currently, detach class attachments";
		977	}
		978	_recalc_want;
		979	};
		980
		981	sub cf::attachable::attached {
		982	my ($obj, $name) = @_;
		983
		984	exists $obj->{_attachment}{$name}
		985	}
		986
		987	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		988	eval "#line " . __LINE__ . " 'cf.pm'
		989	sub cf::\L$klass\E::_attach_registry {
		990	(\\\@CB_$klass, KLASS_$klass)
		991	}
		992
		993	sub cf::\L$klass\E::attachment {
		994	my \$name = shift;
		995
		996	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		997	}
		998	";
		999	die if $@;
		1000	}
		1001
		1002	our $override;
		1003	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1004
		1005	sub override {
		1006	$override = 1;
		1007	@INVOKE_RESULTS = (@_);
		1008	}
		1009
		1010	sub do_invoke {
92	my $event_code = shift;	1011	my $event = shift;
		1012	my $callbacks = shift;
93		1013
94	my $cb = $hook[$event_code]{$extension}	1014	@INVOKE_RESULTS = ();
		1015
		1016	local $override;
		1017
		1018	for (@$callbacks) {
		1019	eval { &{$_->[1]} };
		1020
		1021	if ($@) {
		1022	warn "$@";
		1023	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1024	override;
		1025	}
		1026
		1027	return 1 if $override;
		1028	}
		1029
		1030	0
		1031	}
		1032
		1033	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1034
		1035	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1036
		1037	Generate an object-specific event with the given arguments.
		1038
		1039	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1040	removed in future versions), and there is no public API to access override
		1041	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1042
		1043	=back
		1044
		1045	=cut
		1046
		1047	#############################################################################
		1048	# object support
		1049
		1050	sub _object_equal($$);
		1051	sub _object_equal($$) {
		1052	my ($a, $b) = @_;
		1053
		1054	return 0 unless (ref $a) eq (ref $b);
		1055
		1056	if ("HASH" eq ref $a) {
		1057	my @ka = keys %$a;
		1058	my @kb = keys %$b;
		1059
		1060	return 0 if @ka != @kb;
		1061
		1062	for (0 .. $#ka) {
		1063	return 0 unless $ka[$_] eq $kb[$_];
		1064	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1065	}
		1066
		1067	} elsif ("ARRAY" eq ref $a) {
		1068
		1069	return 0 if @$a != @$b;
		1070
		1071	for (0 .. $#$a) {
		1072	return 0 unless _object_equal $a->[$_], $b->[$_];
		1073	}
		1074
		1075	} elsif ($a ne $b) {
		1076	return 0;
		1077	}
		1078
		1079	1
		1080	}
		1081
		1082	our $SLOW_MERGES;#d#
		1083	sub _can_merge {
		1084	my ($ob1, $ob2) = @_;
		1085
		1086	++$SLOW_MERGES;#d#
		1087
		1088	# we do the slow way here
		1089	return _object_equal $ob1, $ob2
		1090	}
		1091
		1092	sub reattach {
		1093	# basically do the same as instantiate, without calling instantiate
		1094	my ($obj) = @_;
		1095
		1096	# no longer needed after getting rid of delete_package?
		1097	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1098
		1099	my $registry = $obj->registry;
		1100
		1101	@$registry = ();
		1102
		1103	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		1104
		1105	for my $name (keys %{ $obj->{_attachment} || {} }) {
		1106	if (my $attach = $attachment{$name}) {
		1107	for (@$attach) {
		1108	my ($klass, @attach) = @$_;
		1109	_attach $registry, $klass, @attach;
		1110	}
		1111	} else {
		1112	warn "object uses attachment '$name' that is not available, postponing.\n";
		1113	}
		1114	}
		1115	}
		1116
		1117	cf::attachable->attach (
		1118	prio => -1000000,
		1119	on_instantiate => sub {
		1120	my ($obj, $data) = @_;
		1121
		1122	$data = decode_json $data;
		1123
		1124	for (@$data) {
		1125	my ($name, $args) = @$_;
		1126
		1127	$obj->attach ($name, %{$args || {} });
		1128	}
		1129	},
		1130	on_reattach => \&reattach,
		1131	on_clone => sub {
		1132	my ($src, $dst) = @_;
		1133
		1134	@{$dst->registry} = @{$src->registry};
		1135
		1136	%$dst = %$src;
		1137
		1138	%{$dst->{_attachment}} = %{$src->{_attachment}}
		1139	if exists $src->{_attachment};
		1140	},
		1141	);
		1142
		1143	sub object_freezer_save {
		1144	my ($filename, $rdata, $objs) = @_;
		1145
		1146	sync_job {
		1147	if (length $$rdata) {
		1148	utf8::decode (my $decname = $filename);
		1149	warn sprintf "saving %s (%d,%d)\n",
		1150	$decname, length $$rdata, scalar @$objs;
		1151
		1152	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1153	aio_chmod $fh, SAVE_MODE;
		1154	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1155	aio_fsync $fh if $cf::USE_FSYNC;
		1156	aio_close $fh;
		1157
		1158	if (@$objs) {
		1159	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1160	aio_chmod $fh, SAVE_MODE;
		1161	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1162	aio_write $fh, 0, (length $data), $data, 0;
		1163	aio_fsync $fh if $cf::USE_FSYNC;
		1164	aio_close $fh;
		1165	aio_rename "$filename.pst~", "$filename.pst";
		1166	}
		1167	} else {
		1168	aio_unlink "$filename.pst";
		1169	}
		1170
		1171	aio_rename "$filename~", $filename;
		1172	} else {
		1173	warn "FATAL: $filename~: $!\n";
		1174	}
		1175	} else {
		1176	aio_unlink $filename;
		1177	aio_unlink "$filename.pst";
		1178	}
		1179	};
		1180	}
		1181
		1182	sub object_freezer_as_string {
		1183	my ($rdata, $objs) = @_;
		1184
		1185	use Data::Dumper;
		1186
		1187	$$rdata . Dumper $objs
		1188	}
		1189
		1190	sub object_thawer_load {
		1191	my ($filename) = @_;
		1192
		1193	my ($data, $av);
		1194
		1195	(aio_load $filename, $data) >= 0
95	or return;	1196	or return;
96		1197
97	&$cb	1198	unless (aio_stat "$filename.pst") {
98	}	1199	(aio_load "$filename.pst", $av) >= 0
99
100	sub inject_global_event {
101	my $event = shift;
102
103	my $cb = $hook[$event]
104	or return;	1200	or return;
105		1201
106	List::Util::max map &$_, values %$cb	1202	my $st = eval { Coro::Storable::thaw $av };
107	}	1203	$av = $st->{objs};
108
109	sub inject_command {
110	my ($name, $obj, $params) = @_;
111
112	for my $cmd (@{ $command{$name} }) {
113	$cmd->[1]->($obj, $params);
114	}	1204	}
115		1205
116	-1	1206	utf8::decode (my $decname = $filename);
		1207	warn sprintf "loading %s (%d,%d)\n",
		1208	$decname, length $data, scalar @{$av || []};
		1209
		1210	($data, $av)
117	}	1211	}
		1212
		1213	=head2 COMMAND CALLBACKS
		1214
		1215	=over 4
		1216
		1217	=cut
		1218
		1219	#############################################################################
		1220	# command handling &c
		1221
		1222	=item cf::register_command $name => \&callback($ob,$args);
		1223
		1224	Register a callback for execution when the client sends the user command
		1225	$name.
		1226
		1227	=cut
118		1228
119	sub register_command {	1229	sub register_command {
120	my ($name, $time, $cb) = @_;	1230	my ($name, $cb) = @_;
121		1231
122	my $caller = caller;	1232	my $caller = caller;
123	#warn "registering command '$name/$time' to '$caller'";	1233	#warn "registering command '$name/$time' to '$caller'";
124		1234
125	push @{ $command{$name} }, [$time, $cb, $caller];	1235	push @{ $COMMAND{$name} }, [$caller, $cb];
126	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
127	}	1236	}
		1237
		1238	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1239
		1240	Register a callback for execution when the client sends an (synchronous)
		1241	extcmd packet. Ext commands will be processed in the order they are
		1242	received by the server, like other user commands. The first argument is
		1243	the logged-in player. Ext commands can only be processed after a player
		1244	has logged in successfully.
		1245
		1246	If the callback returns something, it is sent back as if reply was being
		1247	called.
		1248
		1249	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1250
		1251	Register a callback for execution when the client sends an (asynchronous)
		1252	exticmd packet. Exti commands are processed by the server as soon as they
		1253	are received, i.e. out of order w.r.t. other commands. The first argument
		1254	is a client socket. Exti commands can be received anytime, even before
		1255	log-in.
		1256
		1257	If the callback returns something, it is sent back as if reply was being
		1258	called.
		1259
		1260	=cut
128		1261
129	sub register_extcmd {	1262	sub register_extcmd {
130	my ($name, $cb) = @_;	1263	my ($name, $cb) = @_;
131		1264
132	my $caller = caller;	1265	$EXTCMD{$name} = $cb;
133	#warn "registering extcmd '$name' to '$caller'";
134
135	$extcmd{$name} = [$cb, $caller];
136	}	1266	}
		1267
		1268	sub register_exticmd {
		1269	my ($name, $cb) = @_;
		1270
		1271	$EXTICMD{$name} = $cb;
		1272	}
		1273
		1274	cf::player->attach (
		1275	on_command => sub {
		1276	my ($pl, $name, $params) = @_;
		1277
		1278	my $cb = $COMMAND{$name}
		1279	or return;
		1280
		1281	for my $cmd (@$cb) {
		1282	$cmd->[1]->($pl->ob, $params);
		1283	}
		1284
		1285	cf::override;
		1286	},
		1287	on_extcmd => sub {
		1288	my ($pl, $buf) = @_;
		1289
		1290	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
		1291
		1292	if (ref $msg) {
		1293	my ($type, $reply, @payload) =
		1294	"ARRAY" eq ref $msg
		1295	? @$msg
		1296	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1297
		1298	my @reply;
		1299
		1300	if (my $cb = $EXTCMD{$type}) {
		1301	@reply = $cb->($pl, @payload);
		1302	}
		1303
		1304	$pl->ext_reply ($reply, @reply)
		1305	if $reply;
		1306
		1307	} else {
		1308	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1309	}
		1310
		1311	cf::override;
		1312	},
		1313	);
		1314
		1315	sub load_extensions {
		1316	cf::sync_job {
		1317	my %todo;
		1318
		1319	for my $path (<$LIBDIR/*.ext>) {
		1320	next unless -r $path;
		1321
		1322	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1323	my $base = $1;
		1324	my $pkg = $1;
		1325	$pkg =~ s/[^[:word:]]/_/g;
		1326	$pkg = "ext::$pkg";
		1327
		1328	open my $fh, "<:utf8", $path
		1329	or die "$path: $!";
		1330
		1331	my $source = do { local $/; <$fh> };
		1332
		1333	my %ext = (
		1334	path => $path,
		1335	base => $base,
		1336	pkg => $pkg,
		1337	);
		1338
		1339	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1340	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1341
		1342	$ext{source} =
		1343	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1344	. "#line 1 \"$path\"\n{\n"
		1345	. $source
		1346	. "\n};\n1";
		1347
		1348	$todo{$base} = \%ext;
		1349	}
		1350
		1351	my %done;
		1352	while (%todo) {
		1353	my $progress;
		1354
		1355	while (my ($k, $v) = each %todo) {
		1356	for (split /,\s*/, $v->{meta}{depends}) {
		1357	goto skip
		1358	unless exists $done{$_};
		1359	}
		1360
		1361	warn "... loading '$k' into '$v->{pkg}'\n";
		1362
		1363	unless (eval $v->{source}) {
		1364	my $msg = $@ ? "$v->{path}: $@\n"
		1365	: "$v->{base}: extension inactive.\n";
		1366
		1367	if (exists $v->{meta}{mandatory}) {
		1368	warn $msg;
		1369	cf::cleanup "mandatory extension failed to load, exiting.";
		1370	}
		1371
		1372	warn $msg;
		1373	}
		1374
		1375	$done{$k} = delete $todo{$k};
		1376	push @EXTS, $v->{pkg};
		1377	$progress = 1;
		1378	}
		1379
		1380	skip:
		1381	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1382	unless $progress;
		1383	}
		1384	};
		1385	}
		1386
		1387	#############################################################################
		1388
		1389	=back
		1390
		1391	=head2 CORE EXTENSIONS
		1392
		1393	Functions and methods that extend core crossfire objects.
		1394
		1395	=cut
		1396
		1397	package cf::player;
		1398
		1399	use Coro::AIO;
		1400
		1401	=head3 cf::player
		1402
		1403	=over 4
		1404
		1405	=item cf::player::num_playing
		1406
		1407	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1408
		1409	=cut
		1410
		1411	sub num_playing {
		1412	scalar grep
		1413	$_->ob->map
		1414	&& !$_->hidden
		1415	&& !$_->ob->flag (cf::FLAG_WIZ),
		1416	cf::player::list
		1417	}
		1418
		1419	=item cf::player::find $login
		1420
		1421	Returns the given player object, loading it if necessary (might block).
		1422
		1423	=cut
		1424
		1425	sub playerdir($) {
		1426	"$PLAYERDIR/"
		1427	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1428	}
		1429
		1430	sub path($) {
		1431	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1432
		1433	(playerdir $login) . "/playerdata"
		1434	}
		1435
		1436	sub find_active($) {
		1437	$cf::PLAYER{$_[0]}
		1438	and $cf::PLAYER{$_[0]}->active
		1439	and $cf::PLAYER{$_[0]}
		1440	}
		1441
		1442	sub exists($) {
		1443	my ($login) = @_;
		1444
		1445	$cf::PLAYER{$login}
		1446	or cf::sync_job { !aio_stat path $login }
		1447	}
		1448
		1449	sub find($) {
		1450	return $cf::PLAYER{$_[0]} || do {
		1451	my $login = $_[0];
		1452
		1453	my $guard = cf::lock_acquire "user_find:$login";
		1454
		1455	$cf::PLAYER{$_[0]} || do {
		1456	# rename old playerfiles to new ones
		1457	#TODO: remove when no longer required
		1458	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1459	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1460	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1461	aio_unlink +(playerdir $login) . "/$login.pl";
		1462
		1463	my $f = new_from_file cf::object::thawer path $login
		1464	or return;
		1465
		1466	my $pl = cf::player::load_pl $f
		1467	or return;
		1468
		1469	local $cf::PLAYER_LOADING{$login} = $pl;
		1470	$f->resolve_delayed_derefs;
		1471	$cf::PLAYER{$login} = $pl
		1472	}
		1473	}
		1474	}
		1475
		1476	sub save($) {
		1477	my ($pl) = @_;
		1478
		1479	return if $pl->{deny_save};
		1480
		1481	my $path = path $pl;
		1482	my $guard = cf::lock_acquire "user_save:$path";
		1483
		1484	return if $pl->{deny_save};
		1485
		1486	aio_mkdir playerdir $pl, 0770;
		1487	$pl->{last_save} = $cf::RUNTIME;
		1488
		1489	cf::get_slot 0.01;
		1490
		1491	$pl->save_pl ($path);
		1492	cf::cede_to_tick;
		1493	}
		1494
		1495	sub new($) {
		1496	my ($login) = @_;
		1497
		1498	my $self = create;
		1499
		1500	$self->ob->name ($login);
		1501	$self->{deny_save} = 1;
		1502
		1503	$cf::PLAYER{$login} = $self;
		1504
		1505	$self
		1506	}
		1507
		1508	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1509
		1510	=cut
		1511
		1512	sub send_msg {
		1513	my $ns = shift->ns
		1514	or return;
		1515	$ns->send_msg (@_);
		1516	}
		1517
		1518	=item $pl->quit_character
		1519
		1520	Nukes the player without looking back. If logged in, the connection will
		1521	be destroyed. May block for a long time.
		1522
		1523	=cut
		1524
		1525	sub quit_character {
		1526	my ($pl) = @_;
		1527
		1528	my $name = $pl->ob->name;
		1529
		1530	$pl->{deny_save} = 1;
		1531	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1532
		1533	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1534	$pl->deactivate;
		1535	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1536	$pl->ob->check_score;
		1537	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1538	$pl->ns->destroy if $pl->ns;
		1539
		1540	my $path = playerdir $pl;
		1541	my $temp = "$path~$cf::RUNTIME~deleting~";
		1542	aio_rename $path, $temp;
		1543	delete $cf::PLAYER{$pl->ob->name};
		1544	$pl->destroy;
		1545
		1546	my $prefix = qr<^~\Q$name\E/>;
		1547
		1548	# nuke player maps
		1549	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1550
		1551	IO::AIO::aio_rmtree $temp;
		1552	}
		1553
		1554	=item $pl->kick
		1555
		1556	Kicks a player out of the game. This destroys the connection.
		1557
		1558	=cut
		1559
		1560	sub kick {
		1561	my ($pl, $kicker) = @_;
		1562
		1563	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1564	$pl->killer ("kicked");
		1565	$pl->ns->destroy;
		1566	}
		1567
		1568	=item cf::player::list_logins
		1569
		1570	Returns am arrayref of all valid playernames in the system, can take a
		1571	while and may block, so not sync_job-capable, ever.
		1572
		1573	=cut
		1574
		1575	sub list_logins {
		1576	my $dirs = aio_readdir $PLAYERDIR
		1577	or return [];
		1578
		1579	my @logins;
		1580
		1581	for my $login (@$dirs) {
		1582	my $path = path $login;
		1583
		1584	# a .pst is a dead give-away for a valid player
		1585	# if no pst file found, open and chekc for blocked users
		1586	if (aio_stat "$path.pst") {
		1587	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1588	aio_read $fh, 0, 512, my $buf, 0 or next;
		1589	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1590	}
		1591
		1592	utf8::decode $login;
		1593	push @logins, $login;
		1594	}
		1595
		1596	\@logins
		1597	}
		1598
		1599	=item $player->maps
		1600
		1601	Returns an arrayref of map paths that are private for this
		1602	player. May block.
		1603
		1604	=cut
		1605
		1606	sub maps($) {
		1607	my ($pl) = @_;
		1608
		1609	$pl = ref $pl ? $pl->ob->name : $pl;
		1610
		1611	my $files = aio_readdir playerdir $pl
		1612	or return;
		1613
		1614	my @paths;
		1615
		1616	for (@$files) {
		1617	utf8::decode $_;
		1618	next if /\.(?:pl|pst)$/;
		1619	next unless /^$PATH_SEP/o;
		1620
		1621	push @paths, cf::map::normalise "~$pl/$_";
		1622	}
		1623
		1624	\@paths
		1625	}
		1626
		1627	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1628
		1629	Expand crossfire pod fragments into protocol xml.
		1630
		1631	=item $player->ext_reply ($msgid, @msg)
		1632
		1633	Sends an ext reply to the player.
		1634
		1635	=cut
		1636
		1637	sub ext_reply($$@) {
		1638	my ($self, $id, @msg) = @_;
		1639
		1640	$self->ns->ext_reply ($id, @msg)
		1641	}
		1642
		1643	=item $player->ext_msg ($type, @msg)
		1644
		1645	Sends an ext event to the client.
		1646
		1647	=cut
		1648
		1649	sub ext_msg($$@) {
		1650	my ($self, $type, @msg) = @_;
		1651
		1652	$self->ns->ext_msg ($type, @msg);
		1653	}
		1654
		1655	=head3 cf::region
		1656
		1657	=over 4
		1658
		1659	=cut
		1660
		1661	package cf::region;
		1662
		1663	=item cf::region::find_by_path $path
		1664
		1665	Tries to decuce the likely region for a map knowing only its path.
		1666
		1667	=cut
		1668
		1669	sub find_by_path($) {
		1670	my ($path) = @_;
		1671
		1672	my ($match, $specificity);
		1673
		1674	for my $region (list) {
		1675	if ($region->{match} && $path =~ $region->{match}) {
		1676	($match, $specificity) = ($region, $region->specificity)
		1677	if $region->specificity > $specificity;
		1678	}
		1679	}
		1680
		1681	$match
		1682	}
		1683
		1684	=back
		1685
		1686	=head3 cf::map
		1687
		1688	=over 4
		1689
		1690	=cut
		1691
		1692	package cf::map;
		1693
		1694	use Fcntl;
		1695	use Coro::AIO;
		1696
		1697	use overload
		1698	'""' => \&as_string,
		1699	fallback => 1;
		1700
		1701	our $MAX_RESET = 3600;
		1702	our $DEFAULT_RESET = 3000;
		1703
		1704	sub generate_random_map {
		1705	my ($self, $rmp) = @_;
		1706
		1707	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1708
		1709	# mit "rum" bekleckern, nicht
		1710	$self->_create_random_map (
		1711	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1712	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1713	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1714	$rmp->{exit_on_final_map},
		1715	$rmp->{xsize}, $rmp->{ysize},
		1716	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1717	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1718	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1719	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1720	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1721	(cf::region::find $rmp->{region}), $rmp->{custom}
		1722	)
		1723	}
		1724
		1725	=item cf::map->register ($regex, $prio)
		1726
		1727	Register a handler for the map path matching the given regex at the
		1728	givne priority (higher is better, built-in handlers have priority 0, the
		1729	default).
		1730
		1731	=cut
137		1732
138	sub register {	1733	sub register {
		1734	my (undef, $regex, $prio) = @_;
		1735	my $pkg = caller;
		1736
		1737	no strict;
		1738	push @{"$pkg\::ISA"}, __PACKAGE__;
		1739
		1740	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1741	}
		1742
		1743	# also paths starting with '/'
		1744	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1745
		1746	sub thawer_merge {
139	my ($base, $pkg) = @_;	1747	my ($self, $merge) = @_;
140		1748
141	for my $idx (0 .. $#EVENT) {	1749	# we have to keep some variables in memory intact
142	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	1750	local $self->{path};
143	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	1751	local $self->{load_path};
144	$hook[$idx]{$base} = $ref;
145	}
146	}
147	}
148		1752
149	sub load_extension {	1753	$self->SUPER::thawer_merge ($merge);
		1754	}
		1755
		1756	sub normalise {
150	my ($path) = @_;	1757	my ($path, $base) = @_;
151		1758
152	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1759	$path = "$path"; # make sure its a string
153	my $base = $1;
154	my $pkg = $1;
155	$pkg =~ s/[^[:word:]]/_/g;
156	$pkg = "cf::ext::$pkg";
157		1760
158	warn "loading '$path' into '$pkg'\n";	1761	$path =~ s/\.map$//;
159		1762
160	open my $fh, "<:utf8", $path	1763	# map plan:
161	or die "$path: $!";	1764	#
		1765	# /! non-realised random map exit (special hack!)
		1766	# {... are special paths that are not being touched
		1767	# ?xxx/... are special absolute paths
		1768	# ?random/... random maps
		1769	# /... normal maps
		1770	# ~user/... per-player map of a specific user
162		1771
163	my $source =	1772	$path =~ s/$PATH_SEP/\//go;
164	"package $pkg; use strict; use utf8;\n"
165	. "#line 1 \"$path\"\n{\n"
166	. (do { local $/; <$fh> })
167	. "\n};\n1";
168		1773
169	eval $source	1774	# treat it as relative path if it starts with
170	or die "$path: $@";	1775	# something that looks reasonable
		1776	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1777	$base or Carp::carp "normalise called with relative path and no base: '$path'";
171		1778
172	push @exts, $pkg;	1779	$base =~ s{[^/]+/?$}{};
173	$ext_pkg{$base} = $pkg;	1780	$path = "$base/$path";
		1781	}
174		1782
175	# no strict 'refs';	1783	for ($path) {
176	# @{"$pkg\::ISA"} = ext::;	1784	redo if s{//}{/};
		1785	redo if s{/\.?/}{/};
		1786	redo if s{/[^/]+/\.\./}{/};
		1787	}
177		1788
178	register $base, $pkg;	1789	$path
179	}	1790	}
180		1791
181	sub unload_extension {	1792	sub new_from_path {
		1793	my (undef, $path, $base) = @_;
		1794
		1795	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1796
		1797	$path = normalise $path, $base;
		1798
		1799	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1800	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1801	my $self = bless cf::map::new, $pkg;
		1802	$self->{path} = $path; $self->path ($path);
		1803	$self->init; # pass $1 etc.
		1804	return $self;
		1805	}
		1806	}
		1807
		1808	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1809	()
		1810	}
		1811
		1812	sub init {
		1813	my ($self) = @_;
		1814
		1815	$self
		1816	}
		1817
		1818	sub as_string {
		1819	my ($self) = @_;
		1820
		1821	"$self->{path}"
		1822	}
		1823
		1824	# the displayed name, this is a one way mapping
		1825	sub visible_name {
		1826	&as_string
		1827	}
		1828
		1829	# the original (read-only) location
		1830	sub load_path {
		1831	my ($self) = @_;
		1832
		1833	"$MAPDIR/$self->{path}.map"
		1834	}
		1835
		1836	# the temporary/swap location
		1837	sub save_path {
		1838	my ($self) = @_;
		1839
		1840	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1841	"$TMPDIR/$path.map"
		1842	}
		1843
		1844	# the unique path, undef == no special unique path
		1845	sub uniq_path {
		1846	my ($self) = @_;
		1847
		1848	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1849	"$UNIQUEDIR/$path"
		1850	}
		1851
		1852	# and all this just because we cannot iterate over
		1853	# all maps in C++...
		1854	sub change_all_map_light {
182	my ($pkg) = @_;	1855	my ($change) = @_;
183		1856
184	warn "removing extension $pkg\n";	1857	$_->change_map_light ($change)
		1858	for grep $_->outdoor, values %cf::MAP;
		1859	}
185		1860
186	if (my $cb = $pkg->can ("on_unload")) {	1861	sub decay_objects {
187	$cb->($pkg);	1862	my ($self) = @_;
		1863
		1864	return if $self->{deny_reset};
		1865
		1866	$self->do_decay_objects;
		1867	}
		1868
		1869	sub unlink_save {
		1870	my ($self) = @_;
		1871
		1872	utf8::encode (my $save = $self->save_path);
		1873	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1874	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1875	}
		1876
		1877	sub load_header_from($) {
		1878	my ($self, $path) = @_;
		1879
		1880	utf8::encode $path;
		1881	my $f = new_from_file cf::object::thawer $path
		1882	or return;
		1883
		1884	$self->_load_header ($f)
		1885	or return;
		1886
		1887	local $MAP_LOADING{$self->{path}} = $self;
		1888	$f->resolve_delayed_derefs;
		1889
		1890	$self->{load_path} = $path;
		1891
188	}	1892	1
		1893	}
189		1894
190	# remove hooks	1895	sub load_header_orig {
191	for my $idx (0 .. $#EVENT) {	1896	my ($self) = @_;
192	delete $hook[$idx]{$pkg};
193	}
194		1897
195	# remove commands	1898	$self->load_header_from ($self->load_path)
196	for my $name (keys %command) {	1899	}
197	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
198		1900
199	if (@cb) {	1901	sub load_header_temp {
200	$command{$name} = \@cb;	1902	my ($self) = @_;
201	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;	1903
		1904	$self->load_header_from ($self->save_path)
		1905	}
		1906
		1907	sub prepare_temp {
		1908	my ($self) = @_;
		1909
		1910	$self->last_access ((delete $self->{last_access})
		1911	|| $cf::RUNTIME); #d#
		1912	# safety
		1913	$self->{instantiate_time} = $cf::RUNTIME
		1914	if $self->{instantiate_time} > $cf::RUNTIME;
		1915	}
		1916
		1917	sub prepare_orig {
		1918	my ($self) = @_;
		1919
		1920	$self->{load_original} = 1;
		1921	$self->{instantiate_time} = $cf::RUNTIME;
		1922	$self->last_access ($cf::RUNTIME);
		1923	$self->instantiate;
		1924	}
		1925
		1926	sub load_header {
		1927	my ($self) = @_;
		1928
		1929	if ($self->load_header_temp) {
		1930	$self->prepare_temp;
202	} else {	1931	} else {
203	delete $command{$name};	1932	$self->load_header_orig
204	delete $COMMAND{"$name\000"};	1933	or return;
205	}	1934	$self->prepare_orig;
		1935	}
		1936
		1937	$self->{deny_reset} = 1
		1938	if $self->no_reset;
		1939
		1940	$self->default_region (cf::region::find_by_path $self->{path})
		1941	unless $self->default_region;
		1942
206	}	1943	1
		1944	}
207		1945
208	# remove extcmds	1946	sub find;
209	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1947	sub find {
210	delete $extcmd{$name};	1948	my ($path, $origin) = @_;
		1949
		1950	$path = normalise $path, $origin && $origin->path;
		1951
		1952	cf::lock_wait "map_data:$path";#d#remove
		1953	cf::lock_wait "map_find:$path";
		1954
		1955	$cf::MAP{$path} || do {
		1956	my $guard1 = cf::lock_acquire "map_data:$path"; # just for the fun of it
		1957	my $guard2 = cf::lock_acquire "map_find:$path";
		1958
		1959	my $map = new_from_path cf::map $path
		1960	or return;
		1961
		1962	$map->{last_save} = $cf::RUNTIME;
		1963
		1964	$map->load_header
		1965	or return;
		1966
		1967	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1968	# doing this can freeze the server in a sync job, obviously
		1969	#$cf::WAIT_FOR_TICK->wait;
		1970	undef $guard2;
		1971	undef $guard1;
		1972	$map->reset;
		1973	return find $path;
		1974	}
		1975
		1976	$cf::MAP{$path} = $map
		1977	}
		1978	}
		1979
		1980	sub pre_load { }
		1981	sub post_load { }
		1982
		1983	sub load {
		1984	my ($self) = @_;
		1985
		1986	local $self->{deny_reset} = 1; # loading can take a long time
		1987
		1988	my $path = $self->{path};
		1989
211	}	1990	{
		1991	my $guard = cf::lock_acquire "map_data:$path";
212		1992
213	Symbol::delete_package $pkg;	1993	return unless $self->valid;
214	}	1994	return unless $self->in_memory == cf::MAP_SWAPPED;
215		1995
216	sub load_extensions {	1996	$self->in_memory (cf::MAP_LOADING);
217	my $LIBDIR = maps_directory "perl";
218		1997
219	for my $ext (<$LIBDIR/*.ext>) {	1998	$self->alloc;
220	next unless -r $ext;	1999
221	eval {	2000	$self->pre_load;
222	load_extension $ext;	2001	cf::cede_to_tick;
		2002
		2003	my $f = new_from_file cf::object::thawer $self->{load_path};
		2004	$f->skip_block;
		2005	$self->_load_objects ($f)
		2006	or return;
		2007
		2008	$self->post_load_original
		2009	if delete $self->{load_original};
		2010
		2011	if (my $uniq = $self->uniq_path) {
		2012	utf8::encode $uniq;
		2013	unless (aio_stat $uniq) {
		2014	if (my $f = new_from_file cf::object::thawer $uniq) {
		2015	$self->clear_unique_items;
		2016	$self->_load_objects ($f);
		2017	$f->resolve_delayed_derefs;
223	1	2018	}
224	} or warn "$ext not loaded: $@";
225	}
226	}
227
228	register_command "perl-reload", 0, sub {
229	my ($who, $arg) = @_;
230
231	if ($who->flag (FLAG_WIZ)) {
232	$who->message ("reloading...");
233
234	warn "reloading...\n";
235	eval {
236	# 1. cancel all watchers
237	$_->cancel for Event::all_watchers;
238
239	# 2. unload all extensions
240	for (@exts) {
241	$who->message ("unloading <$_>");
242	unload_extension $_;
243	}	2019	}
		2020	}
244		2021
245	# 3. unload all modules loaded from $LIBDIR	2022	$f->resolve_delayed_derefs;
		2023
		2024	cf::cede_to_tick;
		2025	# now do the right thing for maps
		2026	$self->link_multipart_objects;
		2027	$self->difficulty ($self->estimate_difficulty)
		2028	unless $self->difficulty;
		2029	cf::cede_to_tick;
		2030
		2031	unless ($self->{deny_activate}) {
		2032	$self->decay_objects;
		2033	$self->fix_auto_apply;
		2034	$self->update_buttons;
		2035	cf::cede_to_tick;
		2036	$self->set_darkness_map;
		2037	cf::cede_to_tick;
		2038	$self->activate;
		2039	}
		2040
		2041	$self->{last_save} = $cf::RUNTIME;
		2042	$self->last_access ($cf::RUNTIME);
		2043
		2044	$self->in_memory (cf::MAP_ACTIVE);
		2045	}
		2046
		2047	$self->post_load;
		2048	}
		2049
		2050	sub customise_for {
		2051	my ($self, $ob) = @_;
		2052
		2053	return find "~" . $ob->name . "/" . $self->{path}
		2054	if $self->per_player;
		2055
		2056	# return find "?party/" . $ob->name . "/" . $self->{path}
		2057	# if $self->per_party;
		2058
		2059	$self
		2060	}
		2061
		2062	# find and load all maps in the 3x3 area around a map
		2063	sub load_neighbours {
		2064	my ($map) = @_;
		2065
		2066	my @neigh; # diagonal neighbours
		2067
		2068	for (0 .. 3) {
		2069	my $neigh = $map->tile_path ($_)
		2070	or next;
		2071	$neigh = find $neigh, $map
		2072	or next;
		2073	$neigh->load;
		2074
		2075	push @neigh,
		2076	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2077	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2078	}
		2079
		2080	for (grep defined $_->[0], @neigh) {
		2081	my ($path, $origin) = @$_;
		2082	my $neigh = find $path, $origin
		2083	or next;
		2084	$neigh->load;
		2085	}
		2086	}
		2087
		2088	sub find_sync {
		2089	my ($path, $origin) = @_;
		2090
		2091	cf::sync_job { find $path, $origin }
		2092	}
		2093
		2094	sub do_load_sync {
		2095	my ($map) = @_;
		2096
		2097	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2098	if $Coro::current == $Coro::main;
		2099
		2100	cf::sync_job { $map->load };
		2101	}
		2102
		2103	our %MAP_PREFETCH;
		2104	our $MAP_PREFETCHER = undef;
		2105
		2106	sub find_async {
		2107	my ($path, $origin, $load) = @_;
		2108
		2109	$path = normalise $path, $origin && $origin->{path};
		2110
		2111	if (my $map = $cf::MAP{$path}) {
		2112	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2113	}
		2114
		2115	$MAP_PREFETCH{$path} |= $load;
		2116
		2117	$MAP_PREFETCHER ||= cf::async {
		2118	$Coro::current->{desc} = "map prefetcher";
		2119
		2120	while (%MAP_PREFETCH) {
246	while (my ($k, $v) = each %INC) {	2121	while (my ($k, $v) = each %MAP_PREFETCH) {
247	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2122	if (my $map = find $k) {
248		2123	$map->load if $v;
249	$who->message ("removing <$k>");
250	delete $INC{$k};
251
252	$k =~ s/\.pm$//;
253	$k =~ s/\//::/g;
254
255	if (my $cb = $k->can ("unload_module")) {
256	$cb->();
257	}	2124	}
258		2125
259	Symbol::delete_package $k;	2126	delete $MAP_PREFETCH{$k};
260	}	2127	}
261
262	# 4. get rid of ext::, as good as possible
263	Symbol::delete_package "ext::$_"
264	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
265
266	# 5. remove register_script_function callbacks
267	# TODO
268
269	# 6. unload cf.pm "a bit"
270	delete $INC{"cf.pm"};
271
272	# don't, removes xs symbols, too
273	#Symbol::delete_package __PACKAGE__;
274
275	# 7. reload cf.pm
276	$who->message ("reloading cf.pm");
277	require cf;
278	};	2128	}
279	warn $@ if $@;	2129	undef $MAP_PREFETCHER;
280	$who->message ($@) if $@;	2130	};
281	warn "reloaded\n";	2131	$MAP_PREFETCHER->prio (6);
282		2132
283	$who->message ("reloaded");	2133	()
		2134	}
		2135
		2136	sub save {
		2137	my ($self) = @_;
		2138
		2139	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2140
		2141	$self->{last_save} = $cf::RUNTIME;
		2142
		2143	return unless $self->dirty;
		2144
		2145	my $save = $self->save_path; utf8::encode $save;
		2146	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2147
		2148	$self->{load_path} = $save;
		2149
		2150	return if $self->{deny_save};
		2151
		2152	local $self->{last_access} = $self->last_access;#d#
		2153
		2154	cf::async {
		2155	$Coro::current->{desc} = "map player save";
		2156	$_->contr->save for $self->players;
		2157	};
		2158
		2159	cf::get_slot 0.02;
		2160
		2161	if ($uniq) {
		2162	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2163	$self->_save_objects ($uniq, cf::IO_UNIQUES);
284	} else {	2164	} else {
285	$who->message ("Intruder Alert!");	2165	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
286	}	2166	}
287	};
288
289	#############################################################################
290	# utility functions
291
292	use JSON::Syck (); # TODO# replace by JSON::PC once working
293
294	sub from_json($) {
295	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
296	JSON::Syck::Load $_[0]
297	}	2167	}
298		2168
299	sub to_json($) {	2169	sub swap_out {
300	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
301	JSON::Syck::Dump $_[0]
302	}
303
304	#############################################################################
305	# extcmd framework, basically convert ext <msg>
306	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
307
308	sub on_extcmd {
309	my ($pl, $buf) = @_;	2170	my ($self) = @_;
310		2171
311	my $msg = eval { from_json $buf };	2172	# save first because save cedes
		2173	$self->save;
312		2174
313	if (ref $msg) {	2175	my $lock = cf::lock_acquire "map_data:$self->{path}";
314	if (my $cb = $extcmd{$msg->{msgtype}}) {	2176
315	if (my %reply = $cb->[0]->($pl, $msg)) {	2177	return if $self->players;
316	$pl->ext_reply ($msg->{msgid}, %reply);	2178	return if $self->in_memory != cf::MAP_ACTIVE;
317	}	2179	return if $self->{deny_save};
318	}	2180
		2181	$self->in_memory (cf::MAP_SWAPPED);
		2182
		2183	$self->deactivate;
		2184	$_->clear_links_to ($self) for values %cf::MAP;
		2185	$self->clear;
		2186	}
		2187
		2188	sub reset_at {
		2189	my ($self) = @_;
		2190
		2191	# TODO: safety, remove and allow resettable per-player maps
		2192	return 1e99 if $self->{deny_reset};
		2193
		2194	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2195	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2196
		2197	$time + $to
		2198	}
		2199
		2200	sub should_reset {
		2201	my ($self) = @_;
		2202
		2203	$self->reset_at <= $cf::RUNTIME
		2204	}
		2205
		2206	sub reset {
		2207	my ($self) = @_;
		2208
		2209	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2210
		2211	return if $self->players;
		2212
		2213	warn "resetting map ", $self->path;
		2214
		2215	$self->in_memory (cf::MAP_SWAPPED);
		2216
		2217	# need to save uniques path
		2218	unless ($self->{deny_save}) {
		2219	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2220
		2221	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2222	if $uniq;
		2223	}
		2224
		2225	delete $cf::MAP{$self->path};
		2226
		2227	$self->deactivate;
		2228	$_->clear_links_to ($self) for values %cf::MAP;
		2229	$self->clear;
		2230
		2231	$self->unlink_save;
		2232	$self->destroy;
		2233	}
		2234
		2235	my $nuke_counter = "aaaa";
		2236
		2237	sub nuke {
		2238	my ($self) = @_;
		2239
		2240	{
		2241	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2242
		2243	delete $cf::MAP{$self->path};
		2244
		2245	$self->unlink_save;
		2246
		2247	bless $self, "cf::map";
		2248	delete $self->{deny_reset};
		2249	$self->{deny_save} = 1;
		2250	$self->reset_timeout (1);
		2251	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2252
		2253	$cf::MAP{$self->path} = $self;
		2254	}
		2255
		2256	$self->reset; # polite request, might not happen
		2257	}
		2258
		2259	=item $maps = cf::map::tmp_maps
		2260
		2261	Returns an arrayref with all map paths of currently instantiated and saved
		2262	maps. May block.
		2263
		2264	=cut
		2265
		2266	sub tmp_maps() {
		2267	[
		2268	map {
		2269	utf8::decode $_;
		2270	/\.map$/
		2271	? normalise $_
		2272	: ()
		2273	} @{ aio_readdir $TMPDIR or [] }
		2274	]
		2275	}
		2276
		2277	=item $maps = cf::map::random_maps
		2278
		2279	Returns an arrayref with all map paths of currently instantiated and saved
		2280	random maps. May block.
		2281
		2282	=cut
		2283
		2284	sub random_maps() {
		2285	[
		2286	map {
		2287	utf8::decode $_;
		2288	/\.map$/
		2289	? normalise "?random/$_"
		2290	: ()
		2291	} @{ aio_readdir $RANDOMDIR or [] }
		2292	]
		2293	}
		2294
		2295	=item cf::map::unique_maps
		2296
		2297	Returns an arrayref of paths of all shared maps that have
		2298	instantiated unique items. May block.
		2299
		2300	=cut
		2301
		2302	sub unique_maps() {
		2303	[
		2304	map {
		2305	utf8::decode $_;
		2306	s/\.map$//; # TODO future compatibility hack
		2307	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2308	? ()
		2309	: normalise $_
		2310	} @{ aio_readdir $UNIQUEDIR or [] }
		2311	]
		2312	}
		2313
		2314	=back
		2315
		2316	=head3 cf::object
		2317
		2318	=cut
		2319
		2320	package cf::object;
		2321
		2322	=over 4
		2323
		2324	=item $ob->inv_recursive
		2325
		2326	Returns the inventory of the object I<and> their inventories, recursively,
		2327	but I<not> the object itself.
		2328
		2329	=cut
		2330
		2331	sub inv_recursive_;
		2332	sub inv_recursive_ {
		2333	map { $_, inv_recursive_ $_->inv } @_
		2334	}
		2335
		2336	sub inv_recursive {
		2337	inv_recursive_ inv $_[0]
		2338	}
		2339
		2340	=item $ref = $ob->ref
		2341
		2342	Creates and returns a persistent reference to an object that can be stored as a string.
		2343
		2344	=item $ob = cf::object::deref ($refstring)
		2345
		2346	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2347	even if the object actually exists. May block.
		2348
		2349	=cut
		2350
		2351	sub deref {
		2352	my ($ref) = @_;
		2353
		2354	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2355	my ($uuid, $name) = ($1, $2);
		2356	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2357	or return;
		2358	$pl->ob->uuid eq $uuid
		2359	or return;
		2360
		2361	$pl->ob
319	} else {	2362	} else {
320	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	2363	warn "$ref: cannot resolve object reference\n";
321	}	2364	undef
322
323	1	2365	}
324	}	2366	}
325		2367
326	#############################################################################	2368	package cf;
327	# load/save/clean perl data associated with a map
328		2369
329	*on_mapclean = sub {	2370	=back
330	my ($map) = @_;
331		2371
332	my $path = $map->tmpname;	2372	=head3 cf::object::player
333	defined $path or return;
334		2373
335	unlink "$path.cfperl";	2374	=over 4
336	};
337		2375
338	*on_mapin =
339	*on_mapload = sub {
340	my ($map) = @_;
341
342	my $path = $map->tmpname;
343	$path = $map->path unless defined $path;
344
345	open my $fh, "<:raw", "$path.cfperl"
346	or return; # no perl data
347
348	my $data = Storable::thaw do { local $/; <$fh> };
349
350	$data->{version} <= 1
351	or return; # too new
352
353	$map->_set_obs ($data->{obs});
354	};
355
356	*on_mapout = sub {
357	my ($map) = @_;
358
359	my $path = $map->tmpname;
360	$path = $map->path unless defined $path;
361
362	my $obs = $map->_get_obs;
363
364	if (defined $obs) {
365	open my $fh, ">:raw", "$path.cfperl"
366	or die "$path.cfperl: $!";
367
368	stat $path;
369
370	print $fh Storable::nfreeze {
371	size => (stat _)[7],
372	time => (stat _)[9],
373	version => 1,
374	obs => $obs,
375	};
376
377	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
378	} else {
379	unlink "$path.cfperl";
380	}
381	};
382
383	#############################################################################
384	# load/save perl data associated with player->ob objects
385
386	*on_player_load = sub {
387	my ($ob, $path) = @_;
388
389	for my $o ($ob, $ob->inv) {
390	if (my $value = $o->get_ob_key_value ("_perl_data")) {
391	$o->set_ob_key_value ("_perl_data");
392
393	%$o = %{ Storable::thaw pack "H*", $value };
394	}
395	}
396	};
397
398	*on_player_save = sub {
399	my ($ob, $path) = @_;
400
401	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
402	for grep %$_, $ob, $ob->inv;
403	};
404
405	#############################################################################
406	# core extensions - in perl
407
408	=item cf::player::exists $login
409
410	Returns true when the given account exists.
411
412	=cut
413
414	sub cf::player::exists($) {
415	cf::player::find $_[0]
416	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
417	}
418
419	=item $player->reply ($npc, $msg[, $flags])	2376	=item $player_object->reply ($npc, $msg[, $flags])
420		2377
421	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2378	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
422	can be C<undef>. Does the right thing when the player is currently in a	2379	can be C<undef>. Does the right thing when the player is currently in a
423	dialogue with the given NPC character.	2380	dialogue with the given NPC character.
424		2381
425	=cut	2382	=cut
426		2383
		2384	our $SAY_CHANNEL = {
		2385	id => "say",
		2386	title => "Map",
		2387	reply => "say ",
		2388	tooltip => "Things said to and replied from npcs near you and other players on the same map only.",
		2389	};
		2390
		2391	our $CHAT_CHANNEL = {
		2392	id => "chat",
		2393	title => "Chat",
		2394	reply => "chat ",
		2395	tooltip => "Player chat and shouts, global to the server.",
		2396	};
		2397
427	# rough implementation of a future "reply" method that works	2398	# rough implementation of a future "reply" method that works
428	# with dialog boxes.	2399	# with dialog boxes.
		2400	#TODO: the first argument must go, split into a $npc->reply_to ( method
429	sub cf::object::player::reply($$$;$) {	2401	sub cf::object::player::reply($$$;$) {
430	my ($self, $npc, $msg, $flags) = @_;	2402	my ($self, $npc, $msg, $flags) = @_;
431		2403
432	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2404	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
433		2405
434	if ($self->{record_replies}) {	2406	if ($self->{record_replies}) {
435	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2407	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2408
436	} else {	2409	} else {
		2410	my $pl = $self->contr;
		2411
		2412	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2413	my $dialog = $pl->{npc_dialog};
		2414	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2415
		2416	} else {
437	$msg = $npc->name . " says: $msg" if $npc;	2417	$msg = $npc->name . " says: $msg" if $npc;
438	$self->message ($msg, $flags);	2418	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2419	}
		2420	}
		2421	}
		2422
		2423	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2424
		2425	=cut
		2426
		2427	sub cf::object::send_msg {
		2428	my $pl = shift->contr
		2429	or return;
		2430	$pl->send_msg (@_);
		2431	}
		2432
		2433	=item $player_object->may ("access")
		2434
		2435	Returns wether the given player is authorized to access resource "access"
		2436	(e.g. "command_wizcast").
		2437
		2438	=cut
		2439
		2440	sub cf::object::player::may {
		2441	my ($self, $access) = @_;
		2442
		2443	$self->flag (cf::FLAG_WIZ) ||
		2444	(ref $cf::CFG{"may_$access"}
		2445	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2446	: $cf::CFG{"may_$access"})
		2447	}
		2448
		2449	=item $player_object->enter_link
		2450
		2451	Freezes the player and moves him/her to a special map (C<{link}>).
		2452
		2453	The player should be reasonably safe there for short amounts of time. You
		2454	I<MUST> call C<leave_link> as soon as possible, though.
		2455
		2456	Will never block.
		2457
		2458	=item $player_object->leave_link ($map, $x, $y)
		2459
		2460	Moves the player out of the special C<{link}> map onto the specified
		2461	map. If the map is not valid (or omitted), the player will be moved back
		2462	to the location he/she was before the call to C<enter_link>, or, if that
		2463	fails, to the emergency map position.
		2464
		2465	Might block.
		2466
		2467	=cut
		2468
		2469	sub link_map {
		2470	unless ($LINK_MAP) {
		2471	$LINK_MAP = cf::map::find "{link}"
		2472	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2473	$LINK_MAP->load;
		2474	}
		2475
		2476	$LINK_MAP
		2477	}
		2478
		2479	sub cf::object::player::enter_link {
		2480	my ($self) = @_;
		2481
		2482	$self->deactivate_recursive;
		2483
		2484	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2485
		2486	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2487	if $self->map && $self->map->{path} ne "{link}";
		2488
		2489	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2490	}
		2491
		2492	sub cf::object::player::leave_link {
		2493	my ($self, $map, $x, $y) = @_;
		2494
		2495	return unless $self->contr->active;
		2496
		2497	my $link_pos = delete $self->{_link_pos};
		2498
		2499	unless ($map) {
		2500	# restore original map position
		2501	($map, $x, $y) = @{ $link_pos || [] };
		2502	$map = cf::map::find $map;
		2503
		2504	unless ($map) {
		2505	($map, $x, $y) = @$EMERGENCY_POSITION;
		2506	$map = cf::map::find $map
		2507	or die "FATAL: cannot load emergency map\n";
		2508	}
		2509	}
		2510
		2511	($x, $y) = (-1, -1)
		2512	unless (defined $x) && (defined $y);
		2513
		2514	# use -1 or undef as default coordinates, not 0, 0
		2515	($x, $y) = ($map->enter_x, $map->enter_y)
		2516	if $x <=0 && $y <= 0;
		2517
		2518	$map->load;
		2519	$map->load_neighbours;
		2520
		2521	return unless $self->contr->active;
		2522	$self->activate_recursive;
		2523
		2524	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2525	$self->enter_map ($map, $x, $y);
		2526	}
		2527
		2528	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2529
		2530	Moves the player to the given map-path and coordinates by first freezing
		2531	her, loading and preparing them map, calling the provided $check callback
		2532	that has to return the map if sucecssful, and then unfreezes the player on
		2533	the new (success) or old (failed) map position. In either case, $done will
		2534	be called at the end of this process.
		2535
		2536	Note that $check will be called with a potentially non-loaded map, so if
		2537	it needs a loaded map it has to call C<< ->load >>.
		2538
		2539	=cut
		2540
		2541	our $GOTOGEN;
		2542
		2543	sub cf::object::player::goto {
		2544	my ($self, $path, $x, $y, $check, $done) = @_;
		2545
		2546	# do generation counting so two concurrent goto's will be executed in-order
		2547	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2548
		2549	$self->enter_link;
		2550
		2551	(async {
		2552	$Coro::current->{desc} = "player::goto $path $x $y";
		2553
		2554	# *tag paths override both path and x|y
		2555	if ($path =~ /^\*(.*)$/) {
		2556	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2557	my $ob = $obs[rand @obs];
		2558
		2559	# see if we actually can go there
		2560	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2561	$ob = $obs[rand @obs];
		2562	} else {
		2563	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2564	}
		2565	# else put us there anyways for now #d#
		2566
		2567	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2568	} else {
		2569	($path, $x, $y) = (undef, undef, undef);
		2570	}
		2571	}
		2572
		2573	my $map = eval {
		2574	my $map = defined $path ? cf::map::find $path : undef;
		2575
		2576	if ($map) {
		2577	$map = $map->customise_for ($self);
		2578	$map = $check->($map) if $check && $map;
		2579	} else {
		2580	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2581	}
		2582
		2583	$map
		2584	};
		2585
		2586	if ($@) {
		2587	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2588	LOG llevError | logBacktrace, Carp::longmess $@;
		2589	}
		2590
		2591	if ($gen == $self->{_goto_generation}) {
		2592	delete $self->{_goto_generation};
		2593	$self->leave_link ($map, $x, $y);
		2594	}
		2595
		2596	$done->() if $done;
		2597	})->prio (1);
		2598	}
		2599
		2600	=item $player_object->enter_exit ($exit_object)
		2601
		2602	=cut
		2603
		2604	sub parse_random_map_params {
		2605	my ($spec) = @_;
		2606
		2607	my $rmp = { # defaults
		2608	xsize => (cf::rndm 15, 40),
		2609	ysize => (cf::rndm 15, 40),
		2610	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2611	#layout => string,
439	}	2612	};
440	}
441		2613
		2614	for (split /\n/, $spec) {
		2615	my ($k, $v) = split /\s+/, $_, 2;
		2616
		2617	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2618	}
		2619
		2620	$rmp
		2621	}
		2622
		2623	sub prepare_random_map {
		2624	my ($exit) = @_;
		2625
		2626	# all this does is basically replace the /! path by
		2627	# a new random map path (?random/...) with a seed
		2628	# that depends on the exit object
		2629
		2630	my $rmp = parse_random_map_params $exit->msg;
		2631
		2632	if ($exit->map) {
		2633	$rmp->{region} = $exit->region->name;
		2634	$rmp->{origin_map} = $exit->map->path;
		2635	$rmp->{origin_x} = $exit->x;
		2636	$rmp->{origin_y} = $exit->y;
		2637
		2638	$exit->map->touch;
		2639	}
		2640
		2641	$rmp->{random_seed} ||= $exit->random_seed;
		2642
		2643	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2644	my $md5 = Digest::MD5::md5_hex $data;
		2645	my $meta = "$RANDOMDIR/$md5.meta";
		2646
		2647	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2648	aio_write $fh, 0, (length $data), $data, 0;
		2649	undef $fh;
		2650	aio_rename "$meta~", $meta;
		2651
		2652	my $slaying = "?random/$md5";
		2653
		2654	if ($exit->valid) {
		2655	$exit->slaying ("?random/$md5");
		2656	$exit->msg (undef);
		2657	}
		2658	}
		2659	}
		2660
		2661	sub cf::object::player::enter_exit {
		2662	my ($self, $exit) = @_;
		2663
		2664	return unless $self->type == cf::PLAYER;
		2665
		2666	$self->enter_link;
		2667
		2668	(async {
		2669	$Coro::current->{desc} = "enter_exit";
		2670
		2671	unless (eval {
		2672	$self->deactivate_recursive; # just to be sure
		2673
		2674	# random map handling
		2675	{
		2676	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2677
		2678	prepare_random_map $exit
		2679	if $exit->slaying eq "/!";
		2680	}
		2681
		2682	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2683	my $x = $exit->stats->hp;
		2684	my $y = $exit->stats->sp;
		2685
		2686	$self->goto ($map, $x, $y);
		2687
		2688	# if exit is damned, update players death & WoR home-position
		2689	$self->contr->savebed ($map, $x, $y)
		2690	if $exit->flag (cf::FLAG_DAMNED);
		2691
		2692	1
		2693	}) {
		2694	$self->message ("Something went wrong deep within the crossfire server. "
		2695	. "I'll try to bring you back to the map you were before. "
		2696	. "Please report this to the dungeon master!",
		2697	cf::NDI_UNIQUE | cf::NDI_RED);
		2698
		2699	warn "ERROR in enter_exit: $@";
		2700	$self->leave_link;
		2701	}
		2702	})->prio (1);
		2703	}
		2704
		2705	=head3 cf::client
		2706
		2707	=over 4
		2708
		2709	=item $client->send_drawinfo ($text, $flags)
		2710
		2711	Sends a drawinfo packet to the client. Circumvents output buffering so
		2712	should not be used under normal circumstances.
		2713
		2714	=cut
		2715
		2716	sub cf::client::send_drawinfo {
		2717	my ($self, $text, $flags) = @_;
		2718
		2719	utf8::encode $text;
		2720	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2721	}
		2722
		2723	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2724
		2725	Send a drawinfo or msg packet to the client, formatting the msg for the
		2726	client if neccessary. C<$type> should be a string identifying the type of
		2727	the message, with C<log> being the default. If C<$color> is negative, suppress
		2728	the message unless the client supports the msg packet.
		2729
		2730	=cut
		2731
		2732	# non-persistent channels (usually the info channel)
		2733	our %CHANNEL = (
		2734	"c/identify" => {
		2735	id => "infobox",
		2736	title => "Identify",
		2737	reply => undef,
		2738	tooltip => "Items recently identified",
		2739	},
		2740	"c/examine" => {
		2741	id => "infobox",
		2742	title => "Examine",
		2743	reply => undef,
		2744	tooltip => "Signs and other items you examined",
		2745	},
		2746	"c/book" => {
		2747	id => "infobox",
		2748	title => "Book",
		2749	reply => undef,
		2750	tooltip => "The contents of a note or book",
		2751	},
		2752	"c/lookat" => {
		2753	id => "infobox",
		2754	title => "Look",
		2755	reply => undef,
		2756	tooltip => "What you saw there",
		2757	},
		2758	"c/who" => {
		2759	id => "infobox",
		2760	title => "Players",
		2761	reply => undef,
		2762	tooltip => "Shows players who are currently online",
		2763	},
		2764	"c/body" => {
		2765	id => "infobox",
		2766	title => "Body Parts",
		2767	reply => undef,
		2768	tooltip => "Shows which body parts you posess and are available",
		2769	},
		2770	"c/uptime" => {
		2771	id => "infobox",
		2772	title => "Uptime",
		2773	reply => undef,
		2774	tooltip => "How long the server has been running since last restart",
		2775	},
		2776	"c/mapinfo" => {
		2777	id => "infobox",
		2778	title => "Map Info",
		2779	reply => undef,
		2780	tooltip => "Information related to the maps",
		2781	},
		2782	"c/party" => {
		2783	id => "party",
		2784	title => "Party",
		2785	reply => "gsay ",
		2786	tooltip => "Messages and chat related to your party",
		2787	},
		2788	);
		2789
		2790	sub cf::client::send_msg {
		2791	my ($self, $channel, $msg, $color, @extra) = @_;
		2792
		2793	$msg = $self->pl->expand_cfpod ($msg);
		2794
		2795	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2796
		2797	# check predefined channels, for the benefit of C
		2798	if ($CHANNEL{$channel}) {
		2799	$channel = $CHANNEL{$channel};
		2800
		2801	$self->ext_msg (channel_info => $channel)
		2802	if $self->can_msg;
		2803
		2804	$channel = $channel->{id};
		2805
		2806	} elsif (ref $channel) {
		2807	# send meta info to client, if not yet sent
		2808	unless (exists $self->{channel}{$channel->{id}}) {
		2809	$self->{channel}{$channel->{id}} = $channel;
		2810	$self->ext_msg (channel_info => $channel)
		2811	if $self->can_msg;
		2812	}
		2813
		2814	$channel = $channel->{id};
		2815	}
		2816
		2817	return unless @extra || length $msg;
		2818
		2819	if ($self->can_msg) {
		2820	# default colour, mask it out
		2821	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2822	if $color & cf::NDI_DEF;
		2823
		2824	my $pkt = "msg "
		2825	. $self->{json_coder}->encode (
		2826	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2827	);
		2828
		2829	# try lzf for large packets
		2830	$pkt = "lzf " . Compress::LZF::compress $pkt
		2831	if 1024 <= length $pkt and $self->{can_lzf};
		2832
		2833	# split very large packets
		2834	if (8192 < length $pkt and $self->{can_lzf}) {
		2835	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2836	$pkt = "frag";
		2837	}
		2838
		2839	$self->send_packet ($pkt);
		2840	} else {
		2841	if ($color >= 0) {
		2842	# replace some tags by gcfclient-compatible ones
		2843	for ($msg) {
		2844	1 while
		2845	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2846	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2847	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2848	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2849	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2850	}
		2851
		2852	$color &= cf::NDI_COLOR_MASK;
		2853
		2854	utf8::encode $msg;
		2855
		2856	if (0 && $msg =~ /\[/) {
		2857	# COMMAND/INFO
		2858	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2859	} else {
		2860	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2861	$self->send_packet ("drawinfo $color $msg")
		2862	}
		2863	}
		2864	}
		2865	}
		2866
		2867	=item $client->ext_msg ($type, @msg)
		2868
		2869	Sends an ext event to the client.
		2870
		2871	=cut
		2872
		2873	sub cf::client::ext_msg($$@) {
		2874	my ($self, $type, @msg) = @_;
		2875
		2876	if ($self->extcmd == 2) {
		2877	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2878	} elsif ($self->extcmd == 1) { # TODO: remove
		2879	push @msg, msgtype => "event_$type";
		2880	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2881	}
		2882	}
		2883
442	=item $player->ext_reply ($msgid, $msgtype, %msg)	2884	=item $client->ext_reply ($msgid, @msg)
443		2885
444	Sends an ext reply to the player.	2886	Sends an ext reply to the client.
445		2887
446	=cut	2888	=cut
447		2889
448	sub cf::player::ext_reply($$$%) {	2890	sub cf::client::ext_reply($$@) {
449	my ($self, $id, %msg) = @_;	2891	my ($self, $id, @msg) = @_;
450		2892
451	$msg{msgid} = $id;	2893	if ($self->extcmd == 2) {
452		2894	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
453	$self->send ("ext " . to_json \%msg);	2895	} elsif ($self->extcmd == 1) {
		2896	#TODO: version 1, remove
		2897	unshift @msg, msgtype => "reply", msgid => $id;
		2898	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2899	}
454	}	2900	}
455		2901
456	#############################################################################	2902	=item $success = $client->query ($flags, "text", \&cb)
457	# map scripting support
458		2903
		2904	Queues a query to the client, calling the given callback with
		2905	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2906	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2907
		2908	Queries can fail, so check the return code. Or don't, as queries will
		2909	become reliable at some point in the future.
		2910
		2911	=cut
		2912
		2913	sub cf::client::query {
		2914	my ($self, $flags, $text, $cb) = @_;
		2915
		2916	return unless $self->state == ST_PLAYING
		2917	|| $self->state == ST_SETUP
		2918	|| $self->state == ST_CUSTOM;
		2919
		2920	$self->state (ST_CUSTOM);
		2921
		2922	utf8::encode $text;
		2923	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2924
		2925	$self->send_packet ($self->{query_queue}[0][0])
		2926	if @{ $self->{query_queue} } == 1;
		2927
		2928	1
		2929	}
		2930
		2931	cf::client->attach (
		2932	on_connect => sub {
		2933	my ($ns) = @_;
		2934
		2935	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2936	},
		2937	on_reply => sub {
		2938	my ($ns, $msg) = @_;
		2939
		2940	# this weird shuffling is so that direct followup queries
		2941	# get handled first
		2942	my $queue = delete $ns->{query_queue}
		2943	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2944
		2945	(shift @$queue)->[1]->($msg);
		2946	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2947
		2948	push @{ $ns->{query_queue} }, @$queue;
		2949
		2950	if (@{ $ns->{query_queue} } == @$queue) {
		2951	if (@$queue) {
		2952	$ns->send_packet ($ns->{query_queue}[0][0]);
		2953	} else {
		2954	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2955	}
		2956	}
		2957	},
		2958	on_exticmd => sub {
		2959	my ($ns, $buf) = @_;
		2960
		2961	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2962
		2963	if (ref $msg) {
		2964	my ($type, $reply, @payload) =
		2965	"ARRAY" eq ref $msg
		2966	? @$msg
		2967	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2968
		2969	my @reply;
		2970
		2971	if (my $cb = $EXTICMD{$type}) {
		2972	@reply = $cb->($ns, @payload);
		2973	}
		2974
		2975	$ns->ext_reply ($reply, @reply)
		2976	if $reply;
		2977
		2978	} else {
		2979	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2980	}
		2981
		2982	cf::override;
		2983	},
		2984	);
		2985
		2986	=item $client->async (\&cb)
		2987
		2988	Create a new coroutine, running the specified callback. The coroutine will
		2989	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2990	or loss of connection).
		2991
		2992	=cut
		2993
		2994	sub cf::client::async {
		2995	my ($self, $cb) = @_;
		2996
		2997	my $coro = &Coro::async ($cb);
		2998
		2999	$coro->on_destroy (sub {
		3000	delete $self->{_coro}{$coro+0};
		3001	});
		3002
		3003	$self->{_coro}{$coro+0} = $coro;
		3004
		3005	$coro
		3006	}
		3007
		3008	cf::client->attach (
		3009	on_destroy => sub {
		3010	my ($ns) = @_;
		3011
		3012	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3013	},
		3014	);
		3015
		3016	=back
		3017
		3018
		3019	=head2 SAFE SCRIPTING
		3020
		3021	Functions that provide a safe environment to compile and execute
		3022	snippets of perl code without them endangering the safety of the server
		3023	itself. Looping constructs, I/O operators and other built-in functionality
		3024	is not available in the safe scripting environment, and the number of
		3025	functions and methods that can be called is greatly reduced.
		3026
		3027	=cut
		3028
459	our $safe = new Safe "ext";	3029	our $safe = new Safe "safe";
460	our $safe_hole = new Safe::Hole;	3030	our $safe_hole = new Safe::Hole;
461		3031
462	$SIG{FPE} = 'IGNORE';	3032	$SIG{FPE} = 'IGNORE';
463		3033
464	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3034	$safe->permit_only (Opcode::opset qw(
		3035	:base_core :base_mem :base_orig :base_math
		3036	grepstart grepwhile mapstart mapwhile
		3037	sort time
		3038	));
465		3039
466	# here we export the classes and methods available to script code	3040	# here we export the classes and methods available to script code
467		3041
		3042	=pod
		3043
		3044	The following functions and methods are available within a safe environment:
		3045
		3046	cf::object
		3047	contr pay_amount pay_player map x y force_find force_add destroy
		3048	insert remove name archname title slaying race decrease split
		3049
		3050	cf::object::player
		3051	player
		3052
		3053	cf::player
		3054	peaceful
		3055
		3056	cf::map
		3057	trigger
		3058
		3059	=cut
		3060
468	for (	3061	for (
469	["cf::object" => qw(contr pay_amount pay_player)],	3062	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3063	insert remove inv nrof name archname title slaying race
		3064	decrease split destroy change_exp)],
470	["cf::object::player" => qw(player)],	3065	["cf::object::player" => qw(player)],
471	["cf::player" => qw(peaceful)],	3066	["cf::player" => qw(peaceful)],
		3067	["cf::map" => qw(trigger)],
472	) {	3068	) {
473	no strict 'refs';	3069	no strict 'refs';
474	my ($pkg, @funs) = @$_;	3070	my ($pkg, @funs) = @$_;
475	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3071	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
476	for @funs;	3072	for @funs;
477	}	3073	}
		3074
		3075	=over 4
		3076
		3077	=item @retval = safe_eval $code, [var => value, ...]
		3078
		3079	Compiled and executes the given perl code snippet. additional var/value
		3080	pairs result in temporary local (my) scalar variables of the given name
		3081	that are available in the code snippet. Example:
		3082
		3083	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3084
		3085	=cut
478		3086
479	sub safe_eval($;@) {	3087	sub safe_eval($;@) {
480	my ($code, %vars) = @_;	3088	my ($code, %vars) = @_;
481		3089
482	my $qcode = $code;	3090	my $qcode = $code;
483	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3091	$qcode =~ s/"/‟/g; # not allowed in #line filenames
484	$qcode =~ s/\n/\\n/g;	3092	$qcode =~ s/\n/\\n/g;
485		3093
486	local $_;	3094	local $_;
487	local @ext::cf::_safe_eval_args = values %vars;	3095	local @safe::cf::_safe_eval_args = values %vars;
488		3096
489	$code =	3097	my $eval =
490	"do {\n"	3098	"do {\n"
491	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3099	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
492	. "#line 0 \"{$qcode}\"\n"	3100	. "#line 0 \"{$qcode}\"\n"
493	. $code	3101	. $code
494	. "\n}"	3102	. "\n}"
495	;	3103	;
496		3104
497	sub_generation_inc;	3105	sub_generation_inc;
498	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	3106	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
499	sub_generation_inc;	3107	sub_generation_inc;
500		3108
		3109	if ($@) {
		3110	warn "$@";
		3111	warn "while executing safe code '$code'\n";
		3112	warn "with arguments " . (join " ", %vars) . "\n";
		3113	}
		3114
501	wantarray ? @res : $res[0]	3115	wantarray ? @res : $res[0]
502	}	3116	}
		3117
		3118	=item cf::register_script_function $function => $cb
		3119
		3120	Register a function that can be called from within map/npc scripts. The
		3121	function should be reasonably secure and should be put into a package name
		3122	like the extension.
		3123
		3124	Example: register a function that gets called whenever a map script calls
		3125	C<rent::overview>, as used by the C<rent> extension.
		3126
		3127	cf::register_script_function "rent::overview" => sub {
		3128	...
		3129	};
		3130
		3131	=cut
503		3132
504	sub register_script_function {	3133	sub register_script_function {
505	my ($fun, $cb) = @_;	3134	my ($fun, $cb) = @_;
506		3135
507	no strict 'refs';	3136	no strict 'refs';
508	*{"ext::$fun"} = $safe_hole->wrap ($cb);	3137	*{"safe::$fun"} = $safe_hole->wrap ($cb);
509	}	3138	}
		3139
		3140	=back
		3141
		3142	=cut
510		3143
511	#############################################################################	3144	#############################################################################
512	# initialisation	3145	# the server's init and main functions
513		3146
514	register "<global>", __PACKAGE__;	3147	sub load_facedata($) {
		3148	my ($path) = @_;
		3149
		3150	# HACK to clear player env face cache, we need some signal framework
		3151	# for this (global event?)
		3152	%ext::player_env::MUSIC_FACE_CACHE = ();
		3153
		3154	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3155
		3156	warn "loading facedata from $path\n";
		3157
		3158	my $facedata;
		3159	0 < aio_load $path, $facedata
		3160	or die "$path: $!";
		3161
		3162	$facedata = Coro::Storable::thaw $facedata;
		3163
		3164	$facedata->{version} == 2
		3165	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3166
		3167	# patch in the exptable
		3168	$facedata->{resource}{"res/exp_table"} = {
		3169	type => FT_RSRC,
		3170	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3171	};
		3172	cf::cede_to_tick;
		3173
		3174	{
		3175	my $faces = $facedata->{faceinfo};
		3176
		3177	while (my ($face, $info) = each %$faces) {
		3178	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3179
		3180	cf::face::set_visibility $idx, $info->{visibility};
		3181	cf::face::set_magicmap $idx, $info->{magicmap};
		3182	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3183	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
		3184
		3185	cf::cede_to_tick;
		3186	}
		3187
		3188	while (my ($face, $info) = each %$faces) {
		3189	next unless $info->{smooth};
		3190
		3191	my $idx = cf::face::find $face
		3192	or next;
		3193
		3194	if (my $smooth = cf::face::find $info->{smooth}) {
		3195	cf::face::set_smooth $idx, $smooth;
		3196	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3197	} else {
		3198	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3199	}
		3200
		3201	cf::cede_to_tick;
		3202	}
		3203	}
		3204
		3205	{
		3206	my $anims = $facedata->{animinfo};
		3207
		3208	while (my ($anim, $info) = each %$anims) {
		3209	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3210	cf::cede_to_tick;
		3211	}
		3212
		3213	cf::anim::invalidate_all; # d'oh
		3214	}
		3215
		3216	{
		3217	# TODO: for gcfclient pleasure, we should give resources
		3218	# that gcfclient doesn't grok a >10000 face index.
		3219	my $res = $facedata->{resource};
		3220
		3221	while (my ($name, $info) = each %$res) {
		3222	if (defined $info->{type}) {
		3223	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3224	my $data;
		3225
		3226	if ($info->{type} & 1) {
		3227	# prepend meta info
		3228
		3229	my $meta = $enc->encode ({
		3230	name => $name,
		3231	%{ $info->{meta} || {} },
		3232	});
		3233
		3234	$data = pack "(w/a*)*", $meta, $info->{data};
		3235	} else {
		3236	$data = $info->{data};
		3237	}
		3238
		3239	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3240	cf::face::set_type $idx, $info->{type};
		3241	} else {
		3242	$RESOURCE{$name} = $info;
		3243	}
		3244
		3245	cf::cede_to_tick;
		3246	}
		3247	}
		3248
		3249	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3250
		3251	1
		3252	}
		3253
		3254	cf::global->attach (on_resource_update => sub {
		3255	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3256	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3257
		3258	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3259	my $sound = $soundconf->{compat}[$_]
		3260	or next;
		3261
		3262	my $face = cf::face::find "sound/$sound->[1]";
		3263	cf::sound::set $sound->[0] => $face;
		3264	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3265	}
		3266
		3267	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3268	my $face = cf::face::find "sound/$v";
		3269	cf::sound::set $k => $face;
		3270	}
		3271	}
		3272	});
		3273
		3274	register_exticmd fx_want => sub {
		3275	my ($ns, $want) = @_;
		3276
		3277	while (my ($k, $v) = each %$want) {
		3278	$ns->fx_want ($k, $v);
		3279	}
		3280	};
		3281
		3282	sub load_resource_file($) {
		3283	my $guard = lock_acquire "load_resource_file";
		3284
		3285	my $status = load_resource_file_ $_[0];
		3286	get_slot 0.1, 100;
		3287	cf::arch::commit_load;
		3288
		3289	$status
		3290	}
		3291
		3292	sub reload_regions {
		3293	# HACK to clear player env face cache, we need some signal framework
		3294	# for this (global event?)
		3295	%ext::player_env::MUSIC_FACE_CACHE = ();
		3296
		3297	load_resource_file "$MAPDIR/regions"
		3298	or die "unable to load regions file\n";
		3299
		3300	for (cf::region::list) {
		3301	$_->{match} = qr/$_->{match}/
		3302	if exists $_->{match};
		3303	}
		3304	}
		3305
		3306	sub reload_facedata {
		3307	load_facedata "$DATADIR/facedata"
		3308	or die "unable to load facedata\n";
		3309	}
		3310
		3311	sub reload_archetypes {
		3312	load_resource_file "$DATADIR/archetypes"
		3313	or die "unable to load archetypes\n";
		3314	}
		3315
		3316	sub reload_treasures {
		3317	load_resource_file "$DATADIR/treasures"
		3318	or die "unable to load treasurelists\n";
		3319	}
		3320
		3321	sub reload_resources {
		3322	warn "reloading resource files...\n";
		3323
		3324	reload_facedata;
		3325	reload_archetypes;
		3326	reload_regions;
		3327	reload_treasures;
		3328
		3329	warn "finished reloading resource files\n";
		3330	}
		3331
		3332	sub init {
		3333	my $guard = freeze_mainloop;
		3334
		3335	evthread_start IO::AIO::poll_fileno;
		3336
		3337	reload_resources;
		3338	}
		3339
		3340	sub reload_config {
		3341	open my $fh, "<:utf8", "$CONFDIR/config"
		3342	or return;
		3343
		3344	local $/;
		3345	*CFG = YAML::Load <$fh>;
		3346
		3347	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3348
		3349	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3350	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3351
		3352	if (exists $CFG{mlockall}) {
		3353	eval {
		3354	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3355	and die "WARNING: m(un)lockall failed: $!\n";
		3356	};
		3357	warn $@ if $@;
		3358	}
		3359	}
		3360
		3361	sub pidfile() {
		3362	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3363	or die "$PIDFILE: $!";
		3364	flock $fh, &Fcntl::LOCK_EX
		3365	or die "$PIDFILE: flock: $!";
		3366	$fh
		3367	}
		3368
		3369	# make sure only one server instance is running at any one time
		3370	sub atomic {
		3371	my $fh = pidfile;
		3372
		3373	my $pid = <$fh>;
		3374	kill 9, $pid if $pid > 0;
		3375
		3376	seek $fh, 0, 0;
		3377	print $fh $$;
		3378	}
		3379
		3380	sub main {
		3381	atomic;
		3382
		3383	# we must not ever block the main coroutine
		3384	local $Coro::idle = sub {
		3385	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3386	(async {
		3387	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3388	EV::loop EV::LOOP_ONESHOT;
		3389	})->prio (Coro::PRIO_MAX);
		3390	};
		3391
		3392	{
		3393	my $guard = freeze_mainloop;
		3394	reload_config;
		3395	db_init;
		3396	load_extensions;
		3397
		3398	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3399	}
		3400
		3401	utime time, time, $RUNTIMEFILE;
		3402
		3403	# no (long-running) fork's whatsoever before this point(!)
		3404	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3405
		3406	EV::loop;
		3407	}
		3408
		3409	#############################################################################
		3410	# initialisation and cleanup
		3411
		3412	# install some emergency cleanup handlers
		3413	BEGIN {
		3414	our %SIGWATCHER = ();
		3415	for my $signal (qw(INT HUP TERM)) {
		3416	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3417	cf::cleanup "SIG$signal";
		3418	};
		3419	}
		3420	}
		3421
		3422	sub write_runtime_sync {
		3423	# first touch the runtime file to show we are still running:
		3424	# the fsync below can take a very very long time.
		3425
		3426	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3427
		3428	my $guard = cf::lock_acquire "write_runtime";
		3429
		3430	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3431	or return;
		3432
		3433	my $value = $cf::RUNTIME + 90 + 10;
		3434	# 10 is the runtime save interval, for a monotonic clock
		3435	# 60 allows for the watchdog to kill the server.
		3436
		3437	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3438	and return;
		3439
		3440	# always fsync - this file is important
		3441	aio_fsync $fh
		3442	and return;
		3443
		3444	# touch it again to show we are up-to-date
		3445	aio_utime $fh, undef, undef;
		3446
		3447	close $fh
		3448	or return;
		3449
		3450	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3451	and return;
		3452
		3453	warn "runtime file written.\n";
		3454
		3455	1
		3456	}
		3457
		3458	our $uuid_lock;
		3459	our $uuid_skip;
		3460
		3461	sub write_uuid_sync($) {
		3462	$uuid_skip ||= $_[0];
		3463
		3464	return if $uuid_lock;
		3465	local $uuid_lock = 1;
		3466
		3467	my $uuid = "$LOCALDIR/uuid";
		3468
		3469	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3470	or return;
		3471
		3472	my $value = uuid_str $uuid_skip + uuid_seq uuid_cur;
		3473	$uuid_skip = 0;
		3474
		3475	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3476	and return;
		3477
		3478	# always fsync - this file is important
		3479	aio_fsync $fh
		3480	and return;
		3481
		3482	close $fh
		3483	or return;
		3484
		3485	aio_rename "$uuid~", $uuid
		3486	and return;
		3487
		3488	warn "uuid file written ($value).\n";
		3489
		3490	1
		3491
		3492	}
		3493
		3494	sub write_uuid($$) {
		3495	my ($skip, $sync) = @_;
		3496
		3497	$sync ? write_uuid_sync $skip
		3498	: async { write_uuid_sync $skip };
		3499	}
		3500
		3501	sub emergency_save() {
		3502	my $freeze_guard = cf::freeze_mainloop;
		3503
		3504	warn "enter emergency perl save\n";
		3505
		3506	cf::sync_job {
		3507	# use a peculiar iteration method to avoid tripping on perl
		3508	# refcount bugs in for. also avoids problems with players
		3509	# and maps saved/destroyed asynchronously.
		3510	warn "begin emergency player save\n";
		3511	for my $login (keys %cf::PLAYER) {
		3512	my $pl = $cf::PLAYER{$login} or next;
		3513	$pl->valid or next;
		3514	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3515	$pl->save;
		3516	}
		3517	warn "end emergency player save\n";
		3518
		3519	warn "begin emergency map save\n";
		3520	for my $path (keys %cf::MAP) {
		3521	my $map = $cf::MAP{$path} or next;
		3522	$map->valid or next;
		3523	$map->save;
		3524	}
		3525	warn "end emergency map save\n";
		3526
		3527	warn "begin emergency database checkpoint\n";
		3528	BDB::db_env_txn_checkpoint $DB_ENV;
		3529	warn "end emergency database checkpoint\n";
		3530
		3531	warn "begin write uuid\n";
		3532	write_uuid_sync 1;
		3533	warn "end write uuid\n";
		3534	};
		3535
		3536	warn "leave emergency perl save\n";
		3537	}
		3538
		3539	sub post_cleanup {
		3540	my ($make_core) = @_;
		3541
		3542	warn Carp::longmess "post_cleanup backtrace"
		3543	if $make_core;
		3544
		3545	my $fh = pidfile;
		3546	unlink $PIDFILE if <$fh> == $$;
		3547	}
		3548
		3549	# a safer delete_package, copied from Symbol
		3550	sub clear_package($) {
		3551	my $pkg = shift;
		3552
		3553	# expand to full symbol table name if needed
		3554	unless ($pkg =~ /^main::.*::$/) {
		3555	$pkg = "main$pkg" if $pkg =~ /^::/;
		3556	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3557	$pkg .= '::' unless $pkg =~ /::$/;
		3558	}
		3559
		3560	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3561	my $stem_symtab = *{$stem}{HASH};
		3562
		3563	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3564	or return;
		3565
		3566	# clear all symbols
		3567	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3568	for my $name (keys %$leaf_symtab) {
		3569	_gv_clear *{"$pkg$name"};
		3570	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3571	}
		3572	warn "cleared package #$pkg\n";#d#
		3573	}
		3574
		3575	our $RELOAD; # how many times to reload
		3576
		3577	sub do_reload_perl() {
		3578	# can/must only be called in main
		3579	if ($Coro::current != $Coro::main) {
		3580	warn "can only reload from main coroutine";
		3581	return;
		3582	}
		3583
		3584	return if $RELOAD++;
		3585
		3586	while ($RELOAD) {
		3587	warn "reloading...";
		3588
		3589	warn "entering sync_job";
		3590
		3591	cf::sync_job {
		3592	cf::write_runtime_sync; # external watchdog should not bark
		3593	cf::emergency_save;
		3594	cf::write_runtime_sync; # external watchdog should not bark
		3595
		3596	warn "syncing database to disk";
		3597	BDB::db_env_txn_checkpoint $DB_ENV;
		3598
		3599	# if anything goes wrong in here, we should simply crash as we already saved
		3600
		3601	warn "flushing outstanding aio requests";
		3602	while (IO::AIO::nreqs || BDB::nreqs) {
		3603	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3604	}
		3605
		3606	warn "cancelling all extension coros";
		3607	$_->cancel for values %EXT_CORO;
		3608	%EXT_CORO = ();
		3609
		3610	warn "removing commands";
		3611	%COMMAND = ();
		3612
		3613	warn "removing ext/exti commands";
		3614	%EXTCMD = ();
		3615	%EXTICMD = ();
		3616
		3617	warn "unloading/nuking all extensions";
		3618	for my $pkg (@EXTS) {
		3619	warn "... unloading $pkg";
		3620
		3621	if (my $cb = $pkg->can ("unload")) {
		3622	eval {
		3623	$cb->($pkg);
		3624	1
		3625	} or warn "$pkg unloaded, but with errors: $@";
		3626	}
		3627
		3628	warn "... clearing $pkg";
		3629	clear_package $pkg;
		3630	}
		3631
		3632	warn "unloading all perl modules loaded from $LIBDIR";
		3633	while (my ($k, $v) = each %INC) {
		3634	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3635
		3636	warn "... unloading $k";
		3637	delete $INC{$k};
		3638
		3639	$k =~ s/\.pm$//;
		3640	$k =~ s/\//::/g;
		3641
		3642	if (my $cb = $k->can ("unload_module")) {
		3643	$cb->();
		3644	}
		3645
		3646	clear_package $k;
		3647	}
		3648
		3649	warn "getting rid of safe::, as good as possible";
		3650	clear_package "safe::$_"
		3651	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3652
		3653	warn "unloading cf.pm \"a bit\"";
		3654	delete $INC{"cf.pm"};
		3655	delete $INC{"cf/pod.pm"};
		3656
		3657	# don't, removes xs symbols, too,
		3658	# and global variables created in xs
		3659	#clear_package __PACKAGE__;
		3660
		3661	warn "unload completed, starting to reload now";
		3662
		3663	warn "reloading cf.pm";
		3664	require cf;
		3665	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3666
		3667	warn "loading config and database again";
		3668	cf::reload_config;
		3669
		3670	warn "loading extensions";
		3671	cf::load_extensions;
		3672
		3673	warn "reattaching attachments to objects/players";
		3674	_global_reattach; # objects, sockets
		3675	warn "reattaching attachments to maps";
		3676	reattach $_ for values %MAP;
		3677	warn "reattaching attachments to players";
		3678	reattach $_ for values %PLAYER;
		3679
		3680	warn "leaving sync_job";
		3681
		3682	1
		3683	} or do {
		3684	warn $@;
		3685	cf::cleanup "error while reloading, exiting.";
		3686	};
		3687
		3688	warn "reloaded";
		3689	--$RELOAD;
		3690	}
		3691	};
		3692
		3693	our $RELOAD_WATCHER; # used only during reload
		3694
		3695	sub reload_perl() {
		3696	# doing reload synchronously and two reloads happen back-to-back,
		3697	# coro crashes during coro_state_free->destroy here.
		3698
		3699	$RELOAD_WATCHER ||= EV::timer 0, 0, sub {
		3700	do_reload_perl;
		3701	undef $RELOAD_WATCHER;
		3702	};
		3703	}
		3704
		3705	register_command "reload" => sub {
		3706	my ($who, $arg) = @_;
		3707
		3708	if ($who->flag (FLAG_WIZ)) {
		3709	$who->message ("reloading server.");
		3710	async {
		3711	$Coro::current->{desc} = "perl_reload";
		3712	reload_perl;
		3713	};
		3714	}
		3715	};
515		3716
516	unshift @INC, $LIBDIR;	3717	unshift @INC, $LIBDIR;
517		3718
518	load_extensions;	3719	my $bug_warning = 0;
		3720
		3721	our @WAIT_FOR_TICK;
		3722	our @WAIT_FOR_TICK_BEGIN;
		3723
		3724	sub wait_for_tick {
		3725	return if tick_inhibit || $Coro::current == $Coro::main;
		3726
		3727	my $signal = new Coro::Signal;
		3728	push @WAIT_FOR_TICK, $signal;
		3729	$signal->wait;
		3730	}
		3731
		3732	sub wait_for_tick_begin {
		3733	return if tick_inhibit || $Coro::current == $Coro::main;
		3734
		3735	my $signal = new Coro::Signal;
		3736	push @WAIT_FOR_TICK_BEGIN, $signal;
		3737	$signal->wait;
		3738	}
		3739
		3740	sub tick {
		3741	if ($Coro::current != $Coro::main) {
		3742	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3743	unless ++$bug_warning > 10;
		3744	return;
		3745	}
		3746
		3747	cf::server_tick; # one server iteration
		3748
		3749	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3750	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3751	Coro::async_pool {
		3752	$Coro::current->{desc} = "runtime saver";
		3753	write_runtime_sync
		3754	or warn "ERROR: unable to write runtime file: $!";
		3755	};
		3756	}
		3757
		3758	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3759	$sig->send;
		3760	}
		3761	while (my $sig = shift @WAIT_FOR_TICK) {
		3762	$sig->send;
		3763	}
		3764
		3765	$LOAD = ($NOW - $TICK_START) / $TICK;
		3766	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3767
		3768	if (0) {
		3769	if ($NEXT_TICK) {
		3770	my $jitter = $TICK_START - $NEXT_TICK;
		3771	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3772	warn "jitter $JITTER\n";#d#
		3773	}
		3774	}
		3775	}
		3776
		3777	{
		3778	# configure BDB
		3779
		3780	BDB::min_parallel 8;
		3781	BDB::max_poll_reqs $TICK * 0.1;
		3782	$AnyEvent::BDB::WATCHER->priority (1);
		3783
		3784	unless ($DB_ENV) {
		3785	$DB_ENV = BDB::db_env_create;
		3786	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3787	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3788	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3789	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3790	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		3791
		3792	cf::sync_job {
		3793	eval {
		3794	BDB::db_env_open
		3795	$DB_ENV,
		3796	$BDBDIR,
		3797	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3798	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3799	0666;
		3800
		3801	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3802	};
		3803
		3804	cf::cleanup "db_env_open(db): $@" if $@;
		3805	};
		3806	}
		3807
		3808	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		3809	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		3810	};
		3811	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		3812	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3813	};
		3814	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3815	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3816	};
		3817	}
		3818
		3819	{
		3820	# configure IO::AIO
		3821
		3822	IO::AIO::min_parallel 8;
		3823	IO::AIO::max_poll_time $TICK * 0.1;
		3824	undef $AnyEvent::AIO::WATCHER;
		3825	}
		3826
		3827	my $_log_backtrace;
		3828
		3829	sub _log_backtrace {
		3830	my ($msg, @addr) = @_;
		3831
		3832	$msg =~ s/\n//;
		3833
		3834	# limit the # of concurrent backtraces
		3835	if ($_log_backtrace < 2) {
		3836	++$_log_backtrace;
		3837	async {
		3838	$Coro::current->{desc} = "abt $msg";
		3839
		3840	my @bt = fork_call {
		3841	@addr = map { sprintf "%x", $_ } @addr;
		3842	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3843	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3844	or die "addr2line: $!";
		3845
		3846	my @funcs;
		3847	my @res = <$fh>;
		3848	chomp for @res;
		3849	while (@res) {
		3850	my ($func, $line) = splice @res, 0, 2, ();
		3851	push @funcs, "[$func] $line";
		3852	}
		3853
		3854	@funcs
		3855	};
		3856
		3857	LOG llevInfo, "[ABT] $msg\n";
		3858	LOG llevInfo, "[ABT] $_\n" for @bt;
		3859	--$_log_backtrace;
		3860	};
		3861	} else {
		3862	LOG llevInfo, "[ABT] $msg\n";
		3863	LOG llevInfo, "[ABT] [suppressed]\n";
		3864	}
		3865	}
		3866
		3867	# load additional modules
		3868	use cf::pod;
		3869
		3870	END { cf::emergency_save }
519		3871
520	1	3872	1
521		3873

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