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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.48 by root, Sun Aug 27 15:24:22 2006 UTC vs.
Revision 1.464 by root, Thu Jan 1 18:35:48 2009 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
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Digest::MD5;
		57	use Fcntl;
		58	use YAML ();
		59	use IO::AIO ();
10	use Time::HiRes;	60	use Time::HiRes;
11	use Event;	61	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	62	use Digest::MD5 ();
13		63
14	use strict;	64	AnyEvent::detect;
15		65
16	_reload_1;	66	# configure various modules to our taste
		67	#
		68	$Storable::canonical = 1; # reduce rsync transfers
		69	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
17		70
		71	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		72
		73	# make sure c-lzf reinitialises itself
		74	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		75	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		76
		77	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		78
18	our %COMMAND = ();	79	our %COMMAND = ();
		80	our %COMMAND_TIME = ();
		81
		82	our @EXTS = (); # list of extension package names
		83	our %EXTCMD = ();
		84	our %EXTICMD = ();
		85	our %EXT_CORO = (); # coroutines bound to extensions
		86	our %EXT_MAP = (); # pluggable maps
		87
		88	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	89	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		90
24	our $TICK = MAX_TIME * 1e-6;	91	our $CONFDIR = confdir;
25	our $TICK_WATCHER;	92	our $DATADIR = datadir;
		93	our $LIBDIR = "$DATADIR/ext";
		94	our $PODDIR = "$DATADIR/pod";
		95	our $MAPDIR = "$DATADIR/" . mapdir;
		96	our $LOCALDIR = localdir;
		97	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		98	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		99	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		100	our $RANDOMDIR = "$LOCALDIR/random";
		101	our $BDBDIR = "$LOCALDIR/db";
		102	our $PIDFILE = "$LOCALDIR/pid";
		103	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		104
		105	our %RESOURCE;
		106
		107	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		108	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	109	our $NEXT_TICK;
		110	our $USE_FSYNC = 1; # use fsync to write maps - default off
		111
		112	our $BDB_DEADLOCK_WATCHER;
		113	our $BDB_CHECKPOINT_WATCHER;
		114	our $BDB_TRICKLE_WATCHER;
		115	our $DB_ENV;
		116
		117	our %CFG;
		118
		119	our $UPTIME; $UPTIME ||= time;
		120	our $RUNTIME;
		121	our $NOW;
		122
		123	our (%PLAYER, %PLAYER_LOADING); # all users
		124	our (%MAP, %MAP_LOADING ); # all maps
		125	our $LINK_MAP; # the special {link} map, which is always available
		126
		127	# used to convert map paths into valid unix filenames by replacing / by ∕
		128	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		129
		130	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		131	our $LOADAVG; # same thing, but with alpha-smoothing
		132	our $JITTER; # average jitter
		133	our $TICK_START; # for load detecting purposes
		134
		135	our @POST_INIT;
		136
		137	our $REATTACH_ON_RELOAD; # ste to true to force object reattach on reload (slow)
		138
		139	binmode STDOUT;
		140	binmode STDERR;
		141
		142	# read virtual server time, if available
		143	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		144	open my $fh, "<", $RUNTIMEFILE
		145	or die "unable to read $RUNTIMEFILE file: $!";
		146	$RUNTIME = <$fh> + 0.;
		147	}
		148
		149	mkdir $_
		150	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		151
		152	our $EMERGENCY_POSITION;
		153
		154	sub cf::map::normalise;
		155
		156	#############################################################################
		157
		158	=head2 GLOBAL VARIABLES
		159
		160	=over 4
		161
		162	=item $cf::UPTIME
		163
		164	The timestamp of the server start (so not actually an uptime).
		165
		166	=item $cf::RUNTIME
		167
		168	The time this server has run, starts at 0 and is increased by $cf::TICK on
		169	every server tick.
		170
		171	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		172	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		173	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		174
		175	Various directories - "/etc", read-only install directory, perl-library
		176	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		177	unique-items directory, player file directory, random maps directory and
		178	database environment.
		179
		180	=item $cf::NOW
		181
		182	The time of the last (current) server tick.
		183
		184	=item $cf::TICK
		185
		186	The interval between server ticks, in seconds.
		187
		188	=item $cf::LOADAVG
		189
		190	The current CPU load on the server (alpha-smoothed), as a value between 0
		191	(none) and 1 (overloaded), indicating how much time is spent on processing
		192	objects per tick. Healthy values are < 0.5.
		193
		194	=item $cf::LOAD
		195
		196	The raw value load value from the last tick.
		197
		198	=item %cf::CFG
		199
		200	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		201	from wherever your confdir points to.
		202
		203	=item cf::wait_for_tick, cf::wait_for_tick_begin
		204
		205	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		206	returns directly I<after> the tick processing (and consequently, can only wake one process
		207	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		208
		209	=item @cf::INVOKE_RESULTS
		210
		211	This array contains the results of the last C<invoke ()> call. When
		212	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		213	that call.
		214
		215	=back
		216
		217	=cut
27		218
28	BEGIN {	219	BEGIN {
29	*CORE::GLOBAL::warn = sub {	220	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	221	my $msg = join "", @_;
		222
31	$msg .= "\n"	223	$msg .= "\n"
32	unless $msg =~ /\n$/;	224	unless $msg =~ /\n$/;
33		225
34	print STDERR "cfperl: $msg";	226	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		227
35	LOG llevError, "cfperl: $msg";	228	LOG llevError, $msg;
36	};	229	};
37	}	230	}
38		231
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	232	$Coro::State::DIEHOOK = sub {
		233	return unless $^S eq 0; # "eq", not "=="
40		234
41	# generate property mutators	235	if ($Coro::current == $Coro::main) {#d#
42	sub prop_gen {	236	warn "DIEHOOK called in main context, Coro bug?\n";#d#
43	my ($prefix, $class) = @_;	237	return;#d#
		238	}#d#
44		239
45	no strict 'refs';	240	# kill coroutine otherwise
		241	warn Carp::longmess $_[0];
		242	Coro::terminate
		243	};
46		244
47	for my $prop (keys %PROP_TYPE) {	245	$SIG{__DIE__} = sub { }; #d#?
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50		246
51	my $type = $PROP_TYPE{$prop};	247	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
52	my $idx = $PROP_IDX {$prop};	248	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
53		249	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	250	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	251	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
56	};	252	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	253	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		254
75	# we bless all objects into (empty) derived classes to force a method lookup	255	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	256	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	257	for my $pkg (qw(
78	no strict 'refs';	258	cf::global cf::attachable
		259	cf::object cf::object::player
		260	cf::client cf::player
		261	cf::arch cf::living
		262	cf::map cf::mapspace
		263	cf::party cf::region
		264	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	265	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	266	}
81		267
82	$Event::DIED = sub {	268	$EV::DIED = sub {
83	warn "error in event callback: @_";	269	warn "error in event callback: @_";
84	};	270	};
85		271
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	272	#############################################################################
93	# utility functions
94		273
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	274	=head2 UTILITY FUNCTIONS
96		275
97	sub from_json($) {	276	=over 4
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101		277
102	sub to_json($) {	278	=item dumpval $ref
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	279
104	JSON::Syck::Dump $_[0]	280	=cut
		281
		282	sub dumpval {
		283	eval {
		284	local $SIG{__DIE__};
		285	my $d;
		286	if (1) {
		287	$d = new Data::Dumper([$_[0]], ["*var"]);
		288	$d->Terse(1);
		289	$d->Indent(2);
		290	$d->Quotekeys(0);
		291	$d->Useqq(1);
		292	#$d->Bless(...);
		293	$d->Seen($_[1]) if @_ > 1;
		294	$d = $d->Dump();
		295	}
		296	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		297	$d
		298	} || "[unable to dump $_[0]: '$@']";
105	}	299	}
		300
		301	=item $ref = cf::decode_json $json
		302
		303	Converts a JSON string into the corresponding perl data structure.
		304
		305	=item $json = cf::encode_json $ref
		306
		307	Converts a perl data structure into its JSON representation.
		308
		309	=cut
		310
		311	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		312
		313	sub encode_json($) { $json_coder->encode ($_[0]) }
		314	sub decode_json($) { $json_coder->decode ($_[0]) }
		315
		316	=item cf::post_init { BLOCK }
		317
		318	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		319	but I<before> the server starts ticking again.
		320
		321	The cdoeblock will have a single boolean argument to indicate whether this
		322	is a reload or not.
		323
		324	=cut
		325
		326	sub post_init(&) {
		327	push @POST_INIT, shift;
		328	}
		329
		330	=item cf::lock_wait $string
		331
		332	Wait until the given lock is available. See cf::lock_acquire.
		333
		334	=item my $lock = cf::lock_acquire $string
		335
		336	Wait until the given lock is available and then acquires it and returns
		337	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		338	for example when the coroutine gets canceled), the lock is automatically
		339	returned.
		340
		341	Locks are *not* recursive, locking from the same coro twice results in a
		342	deadlocked coro.
		343
		344	Lock names should begin with a unique identifier (for example, cf::map::find
		345	uses map_find and cf::map::load uses map_load).
		346
		347	=item $locked = cf::lock_active $string
		348
		349	Return true if the lock is currently active, i.e. somebody has locked it.
		350
		351	=cut
		352
		353	our $LOCKS = new Coro::SemaphoreSet;
		354
		355	sub lock_wait($) {
		356	$LOCKS->wait ($_[0]);
		357	}
		358
		359	sub lock_acquire($) {
		360	$LOCKS->guard ($_[0])
		361	}
		362
		363	sub lock_active($) {
		364	$LOCKS->count ($_[0]) < 1
		365	}
		366
		367	sub freeze_mainloop {
		368	tick_inhibit_inc;
		369
		370	&Guard::guard (\&tick_inhibit_dec);
		371	}
		372
		373	=item cf::periodic $interval, $cb
		374
		375	Like EV::periodic, but randomly selects a starting point so that the actions
		376	get spread over timer.
		377
		378	=cut
		379
		380	sub periodic($$) {
		381	my ($interval, $cb) = @_;
		382
		383	my $start = rand List::Util::min 180, $interval;
		384
		385	EV::periodic $start, $interval, 0, $cb
		386	}
		387
		388	=item cf::get_slot $time[, $priority[, $name]]
		389
		390	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		391	This call blocks and returns only when you have at least C<$time> seconds
		392	of cpu time till the next tick. The slot is only valid till the next cede.
		393
		394	The optional C<$name> can be used to identify the job to run. It might be
		395	used for statistical purposes and should identify the same time-class.
		396
		397	Useful for short background jobs.
		398
		399	=cut
		400
		401	our @SLOT_QUEUE;
		402	our $SLOT_QUEUE;
		403
		404	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		405	$SLOT_QUEUE = Coro::async {
		406	$Coro::current->desc ("timeslot manager");
		407
		408	my $signal = new Coro::Signal;
		409
		410	while () {
		411	next_job:
		412	my $avail = cf::till_tick;
		413	if ($avail > 0.01) {
		414	for (0 .. $#SLOT_QUEUE) {
		415	if ($SLOT_QUEUE[$_][0] < $avail) {
		416	my $job = splice @SLOT_QUEUE, $_, 1, ();
		417	$job->[2]->send;
		418	Coro::cede;
		419	goto next_job;
		420	}
		421	}
		422	}
		423
		424	if (@SLOT_QUEUE) {
		425	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		426	push @cf::WAIT_FOR_TICK, $signal;
		427	$signal->wait;
		428	} else {
		429	Coro::schedule;
		430	}
		431	}
		432	};
		433
		434	sub get_slot($;$$) {
		435	return if tick_inhibit || $Coro::current == $Coro::main;
		436
		437	my ($time, $pri, $name) = @_;
		438
		439	$time = $TICK * .6 if $time > $TICK * .6;
		440	my $sig = new Coro::Signal;
		441
		442	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		443	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		444	$SLOT_QUEUE->ready;
		445	$sig->wait;
		446	}
		447
		448	=item cf::async { BLOCK }
		449
		450	Currently the same as Coro::async_pool, meaning you cannot use
		451	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		452	thing you are allowed to do is call C<prio> on it.
		453
		454	=cut
		455
		456	BEGIN { *async = \&Coro::async_pool }
		457
		458	=item cf::sync_job { BLOCK }
		459
		460	The design of Deliantra requires that the main coroutine ($Coro::main)
		461	is always able to handle events or runnable, as Deliantra is only
		462	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		463	acceptable.
		464
		465	If it must be done, put the blocking parts into C<sync_job>. This will run
		466	the given BLOCK in another coroutine while waiting for the result. The
		467	server will be frozen during this time, so the block should either finish
		468	fast or be very important.
		469
		470	=cut
		471
		472	sub sync_job(&) {
		473	my ($job) = @_;
		474
		475	if ($Coro::current == $Coro::main) {
		476	my $time = EV::time;
		477
		478	# this is the main coro, too bad, we have to block
		479	# till the operation succeeds, freezing the server :/
		480
		481	LOG llevError, Carp::longmess "sync job";#d#
		482
		483	my $freeze_guard = freeze_mainloop;
		484
		485	my $busy = 1;
		486	my @res;
		487
		488	(async {
		489	$Coro::current->desc ("sync job coro");
		490	@res = eval { $job->() };
		491	warn $@ if $@;
		492	undef $busy;
		493	})->prio (Coro::PRIO_MAX);
		494
		495	while ($busy) {
		496	if (Coro::nready) {
		497	Coro::cede_notself;
		498	} else {
		499	EV::loop EV::LOOP_ONESHOT;
		500	}
		501	}
		502
		503	my $time = EV::time - $time;
		504
		505	$TICK_START += $time; # do not account sync jobs to server load
		506
		507	wantarray ? @res : $res[0]
		508	} else {
		509	# we are in another coroutine, how wonderful, everything just works
		510
		511	$job->()
		512	}
		513	}
		514
		515	=item $coro = cf::async_ext { BLOCK }
		516
		517	Like async, but this coro is automatically being canceled when the
		518	extension calling this is being unloaded.
		519
		520	=cut
		521
		522	sub async_ext(&) {
		523	my $cb = shift;
		524
		525	my $coro = &Coro::async ($cb);
		526
		527	$coro->on_destroy (sub {
		528	delete $EXT_CORO{$coro+0};
		529	});
		530	$EXT_CORO{$coro+0} = $coro;
		531
		532	$coro
		533	}
		534
		535	=item fork_call { }, $args
		536
		537	Executes the given code block with the given arguments in a seperate
		538	process, returning the results. Everything must be serialisable with
		539	Coro::Storable. May, of course, block. Note that the executed sub may
		540	never block itself or use any form of event handling.
		541
		542	=cut
		543
		544	sub fork_call(&@) {
		545	my ($cb, @args) = @_;
		546
		547	# we seemingly have to make a local copy of the whole thing,
		548	# otherwise perl prematurely frees the stuff :/
		549	# TODO: investigate and fix (likely this will be rather laborious)
		550
		551	my @res = Coro::Util::fork_eval {
		552	reset_signals;
		553	&$cb
		554	}, @args;
		555
		556	wantarray ? @res : $res[-1]
		557	}
		558
		559	=item $coin = coin_from_name $name
		560
		561	=cut
		562
		563	our %coin_alias = (
		564	"silver" => "silvercoin",
		565	"silvercoin" => "silvercoin",
		566	"silvercoins" => "silvercoin",
		567	"gold" => "goldcoin",
		568	"goldcoin" => "goldcoin",
		569	"goldcoins" => "goldcoin",
		570	"platinum" => "platinacoin",
		571	"platinumcoin" => "platinacoin",
		572	"platinumcoins" => "platinacoin",
		573	"platina" => "platinacoin",
		574	"platinacoin" => "platinacoin",
		575	"platinacoins" => "platinacoin",
		576	"royalty" => "royalty",
		577	"royalties" => "royalty",
		578	);
		579
		580	sub coin_from_name($) {
		581	$coin_alias{$_[0]}
		582	? cf::arch::find $coin_alias{$_[0]}
		583	: undef
		584	}
		585
		586	=item $value = cf::db_get $family => $key
		587
		588	Returns a single value from the environment database.
		589
		590	=item cf::db_put $family => $key => $value
		591
		592	Stores the given C<$value> in the family. It can currently store binary
		593	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		594
		595	=item $db = cf::db_table "name"
		596
		597	Create and/or open a new database table. The string must not be "db" and must be unique
		598	within each server.
		599
		600	=cut
		601
		602	sub db_table($) {
		603	my ($name) = @_;
		604	my $db = BDB::db_create $DB_ENV;
		605
		606	eval {
		607	$db->set_flags (BDB::CHKSUM);
		608
		609	utf8::encode $name;
		610	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		611	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		612	cf::cleanup "db_open(db): $!" if $!;
		613	};
		614	cf::cleanup "db_open(db): $@" if $@;
		615
		616	$db
		617	}
		618
		619	our $DB;
		620
		621	sub db_init {
		622	cf::sync_job {
		623	$DB ||= db_table "db";
		624	};
		625	}
		626
		627	sub db_get($$) {
		628	my $key = "$_[0]/$_[1]";
		629
		630	cf::sync_job {
		631	BDB::db_get $DB, undef, $key, my $data;
		632
		633	$! ? ()
		634	: $data
		635	}
		636	}
		637
		638	sub db_put($$$) {
		639	BDB::dbreq_pri 4;
		640	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		641	}
		642
		643	=item cf::cache $id => [$paths...], $processversion => $process
		644
		645	Generic caching function that returns the value of the resource $id,
		646	caching and regenerating as required.
		647
		648	This function can block.
		649
		650	=cut
		651
		652	sub cache {
		653	my ($id, $src, $processversion, $process) = @_;
		654
		655	my $meta =
		656	join "\x00",
		657	$processversion,
		658	map {
		659	aio_stat $_
		660	and Carp::croak "$_: $!";
		661
		662	($_, (stat _)[7,9])
		663	} @$src;
		664
		665	my $dbmeta = db_get cache => "$id/meta";
		666	if ($dbmeta ne $meta) {
		667	# changed, we may need to process
		668
		669	my @data;
		670	my $md5;
		671
		672	for (0 .. $#$src) {
		673	0 <= aio_load $src->[$_], $data[$_]
		674	or Carp::croak "$src->[$_]: $!";
		675	}
		676
		677	# if processing is expensive, check
		678	# checksum first
		679	if (1) {
		680	$md5 =
		681	join "\x00",
		682	$processversion,
		683	map {
		684	cf::cede_to_tick;
		685	($src->[$_], Digest::MD5::md5_hex $data[$_])
		686	} 0.. $#$src;
		687
		688
		689	my $dbmd5 = db_get cache => "$id/md5";
		690	if ($dbmd5 eq $md5) {
		691	db_put cache => "$id/meta", $meta;
		692
		693	return db_get cache => "$id/data";
		694	}
		695	}
		696
		697	my $t1 = Time::HiRes::time;
		698	my $data = $process->(\@data);
		699	my $t2 = Time::HiRes::time;
		700
		701	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		702
		703	db_put cache => "$id/data", $data;
		704	db_put cache => "$id/md5" , $md5;
		705	db_put cache => "$id/meta", $meta;
		706
		707	return $data;
		708	}
		709
		710	db_get cache => "$id/data"
		711	}
		712
		713	=item cf::datalog type => key => value, ...
		714
		715	Log a datalog packet of the given type with the given key-value pairs.
		716
		717	=cut
		718
		719	sub datalog($@) {
		720	my ($type, %kv) = @_;
		721	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		722	}
		723
		724	=back
		725
		726	=cut
106		727
107	#############################################################################	728	#############################################################################
108	# "new" plug-in system
109		729
		730	=head2 ATTACHABLE OBJECTS
		731
		732	Many objects in deliantra are so-called attachable objects. That means you can
		733	attach callbacks/event handlers (a collection of which is called an "attachment")
		734	to it. All such attachable objects support the following methods.
		735
		736	In the following description, CLASS can be any of C<global>, C<object>
		737	C<player>, C<client> or C<map> (i.e. the attachable objects in
		738	Deliantra).
		739
		740	=over 4
		741
110	=item $object->attach ($attachment, key => $value...)	742	=item $attachable->attach ($attachment, key => $value...)
111		743
112	Attach a pre-registered attachment to an object.	744	=item $attachable->detach ($attachment)
113		745
114	=item $player->attach ($attachment, key => $value...)	746	Attach/detach a pre-registered attachment to a specific object and give it
		747	the specified key/value pairs as arguments.
115		748
116	Attach a pre-registered attachment to a player.	749	Example, attach a minesweeper attachment to the given object, making it a
		750	10x10 minesweeper game:
117		751
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	752	$obj->attach (minesweeper => width => 10, height => 10);
119		753
120	Attach a pre-registered attachment to a map.	754	=item $bool = $attachable->attached ($name)
121		755
122	=item cf::attach_global ...	756	Checks wether the named attachment is currently attached to the object.
123		757
124	Attach handlers for global events.	758	=item cf::CLASS->attach ...
125		759
126	This and all following C<attach_*>-functions expect any number of the	760	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	761
		762	Define an anonymous attachment and attach it to all objects of the given
		763	CLASS. See the next function for an explanation of its arguments.
		764
		765	You can attach to global events by using the C<cf::global> class.
		766
		767	Example, log all player logins:
		768
		769	cf::player->attach (
		770	on_login => sub {
		771	my ($pl) = @_;
		772	...
		773	},
		774	);
		775
		776	Example, attach to the jeweler skill:
		777
		778	cf::object->attach (
		779	type => cf::SKILL,
		780	subtype => cf::SK_JEWELER,
		781	on_use_skill => sub {
		782	my ($sk, $ob, $part, $dir, $msg) = @_;
		783	...
		784	},
		785	);
		786
		787	=item cf::CLASS::attachment $name, ...
		788
		789	Register an attachment by C<$name> through which attachable objects of the
		790	given CLASS can refer to this attachment.
		791
		792	Some classes such as deliantra maps and objects can specify attachments
		793	that are attached at load/instantiate time, thus the need for a name.
		794
		795	These calls expect any number of the following handler/hook descriptions:
128		796
129	=over 4	797	=over 4
130		798
131	=item prio => $number	799	=item prio => $number
132		800
…		…
134	by another C<prio> setting). Lower priority handlers get executed	802	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	803	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	804	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	805	unless you know what you are doing.
138		806
		807	=item type => $type
		808
		809	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		810	given type of objects only (the additional parameter C<subtype> can be
		811	used to further limit to the given subtype).
		812
139	=item on_I<event> => \&cb	813	=item on_I<event> => \&cb
140		814
141	Call the given code reference whenever the named event happens (event is	815	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	816	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	817	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	826	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	827	object/class are recognised.
154		828
155	=back	829	=back
156		830
157	=item cf::attach_to_type $object_type, $subtype, ...	831	Example, define an attachment called "sockpuppet" that calls the given
		832	event handler when a monster attacks:
158		833
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	834	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	835	on_skill_attack => sub {
161	type.	836	my ($self, $victim) = @_;
		837	...
		838	}
		839	}
162		840
163	=item cf::attach_to_objects ...	841	=item $attachable->valid
164		842
165	Attach handlers to all objects. Do not use this except for debugging or	843	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	844	C-level object still exists. If you try to access an object that has no
167	the game.	845	valid C counterpart anymore you get an exception at runtime. This method
168		846	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	847	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		848
179	=cut	849	=cut
180		850
181	# the following variables are defined in .xs and must not be re-created	851	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	852	our @CB_GLOBAL = (); # registry for all global events
		853	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	854	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	855	our @CB_PLAYER = ();
		856	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	857	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	858	our @CB_MAP = ();
187		859
188	my %attachment;	860	my %attachment;
189		861
		862	sub cf::attachable::thawer_merge {
		863	# simply override everything except _meta
		864	local $_[0]{_meta};
		865	%{$_[0]} = %{$_[1]};
		866	}
		867
190	sub _attach_cb($\%$$$) {	868	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	869	my ($registry, $event, $prio, $cb) = @_;
192		870
193	use sort 'stable';	871	use sort 'stable';
194		872
195	$cb = [$prio, $cb];	873	$cb = [$prio, $cb];
196		874
197	@{$registry->[$event]} = sort	875	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	876	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	877	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	878	}
		879
		880	# hack
		881	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		882
204	# attach handles attaching event callbacks	883	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	884	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	885	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	886	sub _attach {
208	my ($registry, $klass, @arg) = @_;	887	my ($registry, $klass, @arg) = @_;
209		888
		889	my $object_type;
210	my $prio = 0;	890	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	891	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		892
		893	#TODO: get rid of this hack
		894	if ($attachable_klass{$klass}) {
		895	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		896	}
218		897
219	while (@arg) {	898	while (@arg) {
220	my $type = shift @arg;	899	my $type = shift @arg;
221		900
222	if ($type eq "prio") {	901	if ($type eq "prio") {
223	$prio = shift @arg;	902	$prio = shift @arg;
224		903
		904	} elsif ($type eq "type") {
		905	$object_type = shift @arg;
		906	$registry = $CB_TYPE[$object_type] ||= [];
		907
		908	} elsif ($type eq "subtype") {
		909	defined $object_type or Carp::croak "subtype specified without type";
		910	my $object_subtype = shift @arg;
		911	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		912
225	} elsif ($type eq "package") {	913	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	914	my $pkg = shift @arg;
227		915
228	while (my ($name, $id) = each %cb_id) {	916	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	917	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	918	_attach_cb $registry, $id, $prio, $cb;
231	}	919	}
232	}	920	}
233		921
234	} elsif (exists $cb_id{$type}) {	922	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	923	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		924
237	} elsif (ref $type) {	925	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	926	warn "attaching objects not supported, ignoring.\n";
239		927
240	} else {	928	} else {
241	shift @arg;	929	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	930	warn "attach argument '$type' not supported, ignoring.\n";
243	}	931	}
244	}	932	}
245
246	\%undo
247	}	933	}
248		934
249	sub _attach_attachment {	935	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	936	my ($obj, $name, %arg) = @_;
251		937
252	my $res;	938	return if exists $obj->{_attachment}{$name};
253		939
254	if (my $attach = $attachment{$name}) {	940	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	941	my $registry = $obj->registry;
256		942
257	for (@$attach) {	943	for (@$attach) {
258	my ($klass, @attach) = @$_;	944	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	945	_attach $registry, $klass, @attach;
260	}	946	}
261		947
262	$obj->{$name} = \%arg;	948	$obj->{$name} = \%arg;
263	} else {	949	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	950	warn "object uses attachment '$name' which is not available, postponing.\n";
265	}	951	}
266		952
267	push @{$obj->{_attachment}}, $name;	953	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	954	}
272		955
273	sub cf::object::attach {	956	sub cf::attachable::attach {
		957	if (ref $_[0]) {
		958	_object_attach @_;
		959	} else {
		960	_attach shift->_attach_registry, @_;
		961	}
		962	_recalc_want;
		963	};
		964
		965	# all those should be optimised
		966	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	967	my ($obj, $name) = @_;
275		968
276	_attach_attachment $obj, $name, %arg;	969	if (ref $obj) {
277	}	970	delete $obj->{_attachment}{$name};
		971	reattach ($obj);
		972	} else {
		973	Carp::croak "cannot, currently, detach class attachments";
		974	}
		975	_recalc_want;
		976	};
278		977
279	sub cf::player::attach {	978	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	979	my ($obj, $name) = @_;
281		980
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	981	exists $obj->{_attachment}{$name}
283	}	982	}
284		983
285	sub cf::map::attach {	984	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	985	eval "#line " . __LINE__ . " 'cf.pm'
		986	sub cf::\L$klass\E::_attach_registry {
		987	(\\\@CB_$klass, KLASS_$klass)
		988	}
287		989
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	990	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	991	my \$name = shift;
316		992
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	993	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		994	}
		995	";
		996	die if $@;
318	}	997	}
319		998
320	our $override;	999	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1000	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		1001
323	sub override {	1002	sub override {
324	$override = 1;	1003	$override = 1;
325	@invoke_results = ();	1004	@INVOKE_RESULTS = (@_);
326	}	1005	}
327		1006
328	sub do_invoke {	1007	sub do_invoke {
329	my $event = shift;	1008	my $event = shift;
330	my $callbacks = shift;	1009	my $callbacks = shift;
331		1010
332	@invoke_results = ();	1011	@INVOKE_RESULTS = ();
333		1012
334	local $override;	1013	local $override;
335		1014
336	for (@$callbacks) {	1015	for (@$callbacks) {
337	eval { &{$_->[1]} };	1016	eval { &{$_->[1]} };
338		1017
339	if ($@) {	1018	if ($@) {
340	warn "$@";	1019	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	1020	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	1021	override;
343	}	1022	}
344		1023
345	return 1 if $override;	1024	return 1 if $override;
346	}	1025	}
347		1026
348	0	1027	0
349	}	1028	}
		1029
		1030	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1031
		1032	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1033
		1034	Generate an object-specific event with the given arguments.
		1035
		1036	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1037	removed in future versions), and there is no public API to access override
		1038	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1039
		1040	=back
		1041
		1042	=cut
350		1043
351	#############################################################################	1044	#############################################################################
352	# object support	1045	# object support
353		1046
354	sub instantiate {	1047	sub _object_equal($$);
		1048	sub _object_equal($$) {
		1049	my ($a, $b) = @_;
		1050
		1051	return 0 unless (ref $a) eq (ref $b);
		1052
		1053	if ("HASH" eq ref $a) {
		1054	my @ka = keys %$a;
		1055	my @kb = keys %$b;
		1056
		1057	return 0 if @ka != @kb;
		1058
		1059	for (0 .. $#ka) {
		1060	return 0 unless $ka[$_] eq $kb[$_];
		1061	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1062	}
		1063
		1064	} elsif ("ARRAY" eq ref $a) {
		1065
		1066	return 0 if @$a != @$b;
		1067
		1068	for (0 .. $#$a) {
		1069	return 0 unless _object_equal $a->[$_], $b->[$_];
		1070	}
		1071
		1072	} elsif ($a ne $b) {
		1073	return 0;
		1074	}
		1075
		1076	1
		1077	}
		1078
		1079	our $SLOW_MERGES;#d#
		1080	sub _can_merge {
355	my ($obj, $data) = @_;	1081	my ($ob1, $ob2) = @_;
356		1082
357	$data = from_json $data;	1083	++$SLOW_MERGES;#d#
358		1084
359	for (@$data) {	1085	# we do the slow way here
360	my ($name, $args) = @$_;	1086	return _object_equal $ob1, $ob2
361	attach $obj, $name, %{$args || {} };
362	}
363	}	1087	}
364		1088
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	1089	sub reattach {
		1090	# basically do the same as instantiate, without calling instantiate
367	my ($obj) = @_;	1091	my ($obj) = @_;
		1092
		1093	# no longer needed after getting rid of delete_package?
		1094	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1095
368	my $registry = $obj->registry;	1096	my $registry = $obj->registry;
369		1097
370	@$registry = ();	1098	@$registry = ();
371		1099
		1100	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		1101
372	for my $name (@{ $obj->{_attachment} }) {	1102	for my $name (keys %{ $obj->{_attachment} || {} }) {
373	if (my $attach = $attachment{$name}) {	1103	if (my $attach = $attachment{$name}) {
374	for (@$attach) {	1104	for (@$attach) {
375	my ($klass, @attach) = @$_;	1105	my ($klass, @attach) = @$_;
376	_attach @$registry, $klass, @attach;	1106	_attach $registry, $klass, @attach;
377	}	1107	}
378	} else {	1108	} else {
379	warn "object uses attachment '$name' that is not available, postponing.\n";	1109	warn "object uses attachment '$name' that is not available, postponing.\n";
380	}	1110	}
381	}	1111	}
382	}	1112	}
383		1113
		1114	cf::attachable->attach (
		1115	prio => -1000000,
		1116	on_instantiate => sub {
		1117	my ($obj, $data) = @_;
		1118
		1119	$data = decode_json $data;
		1120
		1121	for (@$data) {
		1122	my ($name, $args) = @$_;
		1123
		1124	$obj->attach ($name, %{$args || {} });
		1125	}
		1126	},
		1127	on_reattach => \&reattach,
		1128	on_clone => sub {
		1129	my ($src, $dst) = @_;
		1130
		1131	@{$dst->registry} = @{$src->registry};
		1132
		1133	%$dst = %$src;
		1134
		1135	%{$dst->{_attachment}} = %{$src->{_attachment}}
		1136	if exists $src->{_attachment};
		1137	},
		1138	);
		1139
384	sub object_freezer_save {	1140	sub object_freezer_save {
385	my ($filename, $objs) = @_;	1141	my ($filename, $rdata, $objs) = @_;
386		1142
387	$filename .= ".pst";	1143	sync_job {
		1144	if (length $$rdata) {
		1145	utf8::decode (my $decname = $filename);
		1146	warn sprintf "saving %s (%d,%d)\n",
		1147	$decname, length $$rdata, scalar @$objs;
388		1148
389	if (@$objs) {	1149	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";
391	chmod $fh, SAVE_MODE;	1150	aio_chmod $fh, SAVE_MODE;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1151	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1152	aio_fsync $fh if $cf::USE_FSYNC;
393	close $fh;	1153	aio_close $fh;
		1154
		1155	if (@$objs) {
		1156	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1157	aio_chmod $fh, SAVE_MODE;
		1158	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1159	aio_write $fh, 0, (length $data), $data, 0;
		1160	aio_fsync $fh if $cf::USE_FSYNC;
		1161	aio_close $fh;
		1162	aio_rename "$filename.pst~", "$filename.pst";
		1163	}
		1164	} else {
		1165	aio_unlink "$filename.pst";
		1166	}
		1167
394	rename "$filename~", $filename;	1168	aio_rename "$filename~", $filename;
		1169
		1170	$filename =~ s%/[^/]+$%%;
		1171	aio_pathsync $filename if $cf::USE_FSYNC;
		1172	} else {
		1173	warn "unable to save objects: $filename~: $!\n";
		1174	}
395	} else {	1175	} else {
396	unlink $filename;	1176	aio_unlink $filename;
		1177	aio_unlink "$filename.pst";
		1178	}
397	}	1179	};
		1180	}
		1181
		1182	sub object_freezer_as_string {
		1183	my ($rdata, $objs) = @_;
		1184
		1185	use Data::Dumper;
		1186
		1187	$$rdata . Dumper $objs
398	}	1188	}
399		1189
400	sub object_thawer_load {	1190	sub object_thawer_load {
401	my ($filename) = @_;	1191	my ($filename) = @_;
402		1192
403	open my $fh, "<:raw:perlio", "$filename.pst"	1193	my ($data, $av);
		1194
		1195	(aio_load $filename, $data) >= 0
404	or return;	1196	or return;
405		1197
406	eval { local $/; (Storable::thaw <$fh>)->{objs} }	1198	unless (aio_stat "$filename.pst") {
407	}	1199	(aio_load "$filename.pst", $av) >= 0
		1200	or return;
408		1201
409	attach_to_objects	1202	my $st = eval { Coro::Storable::thaw $av };
410	prio => -1000000,	1203	$av = $st->{objs};
411	on_clone => sub {
412	my ($src, $dst) = @_;
413
414	@{$dst->registry} = @{$src->registry};
415
416	%$dst = %$src;
417
418	$dst->{_attachment} = [@{ $src->{_attachment} }]
419	if exists $src->{_attachment};
420	},	1204	}
421	;	1205
		1206	utf8::decode (my $decname = $filename);
		1207	warn sprintf "loading %s (%d,%d)\n",
		1208	$decname, length $data, scalar @{$av || []};
		1209
		1210	($data, $av)
		1211	}
		1212
		1213	=head2 COMMAND CALLBACKS
		1214
		1215	=over 4
		1216
		1217	=cut
422		1218
423	#############################################################################	1219	#############################################################################
424	# old plug-in events	1220	# command handling &c
425		1221
426	sub inject_event {	1222	=item cf::register_command $name => \&callback($ob,$args);
427	my $extension = shift;
428	my $event_code = shift;
429		1223
430	my $cb = $hook[$event_code]{$extension}	1224	Register a callback for execution when the client sends the user command
431	or return;	1225	$name.
432		1226
433	&$cb	1227	=cut
434	}
435
436	sub inject_global_event {
437	my $event = shift;
438
439	my $cb = $hook[$event]
440	or return;
441
442	List::Util::max map &$_, values %$cb
443	}
444
445	sub inject_command {
446	my ($name, $obj, $params) = @_;
447
448	for my $cmd (@{ $command{$name} }) {
449	$cmd->[1]->($obj, $params);
450	}
451
452	-1
453	}
454		1228
455	sub register_command {	1229	sub register_command {
456	my ($name, $time, $cb) = @_;	1230	my ($name, $cb) = @_;
457		1231
458	my $caller = caller;	1232	my $caller = caller;
459	#warn "registering command '$name/$time' to '$caller'";	1233	#warn "registering command '$name/$time' to '$caller'";
460		1234
461	push @{ $command{$name} }, [$time, $cb, $caller];	1235	push @{ $COMMAND{$name} }, [$caller, $cb];
462	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
463	}	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,$packet);
		1250
		1251	Register a callback for execution when the client sends an (asynchronous)
		1252	exticmd packet. Exti commands are processed by the server as soon as they
		1253	are received, i.e. out of order w.r.t. other commands. The first argument
		1254	is a client socket. Exti commands can be received anytime, even before
		1255	log-in.
		1256
		1257	If the callback returns something, it is sent back as if reply was being
		1258	called.
		1259
		1260	=cut
464		1261
465	sub register_extcmd {	1262	sub register_extcmd {
466	my ($name, $cb) = @_;	1263	my ($name, $cb) = @_;
467		1264
468	my $caller = caller;	1265	$EXTCMD{$name} = $cb;
469	#warn "registering extcmd '$name' to '$caller'";
470
471	$extcmd{$name} = [$cb, $caller];
472	}	1266	}
473		1267
474	sub register {	1268	sub register_exticmd {
475	my ($base, $pkg) = @_;	1269	my ($name, $cb) = @_;
476		1270
477	#TODO	1271	$EXTICMD{$name} = $cb;
478	}	1272	}
479		1273
480	sub load_extension {	1274	use File::Glob ();
481	my ($path) = @_;
482		1275
483	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1276	cf::player->attach (
484	my $base = $1;	1277	on_command => sub {
485	my $pkg = $1;	1278	my ($pl, $name, $params) = @_;
486	$pkg =~ s/[^[:word:]]/_/g;
487	$pkg = "ext::$pkg";
488		1279
489	warn "loading '$path' into '$pkg'\n";	1280	my $cb = $COMMAND{$name}
		1281	or return;
490		1282
491	open my $fh, "<:utf8", $path	1283	for my $cmd (@$cb) {
492	or die "$path: $!";	1284	$cmd->[1]->($pl->ob, $params);
493
494	my $source =
495	"package $pkg; use strict; use utf8;\n"
496	. "#line 1 \"$path\"\n{\n"
497	. (do { local $/; <$fh> })
498	. "\n};\n1";
499
500	eval $source
501	or die "$path: $@";
502
503	push @exts, $pkg;
504	$ext_pkg{$base} = $pkg;
505
506	# no strict 'refs';
507	# @{"$pkg\::ISA"} = ext::;
508
509	register $base, $pkg;
510	}
511
512	sub unload_extension {
513	my ($pkg) = @_;
514
515	warn "removing extension $pkg\n";
516
517	# remove hooks
518	#TODO
519	# for my $idx (0 .. $#PLUGIN_EVENT) {
520	# delete $hook[$idx]{$pkg};
521	# }
522
523	# remove commands
524	for my $name (keys %command) {
525	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
526
527	if (@cb) {
528	$command{$name} = \@cb;
529	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
530	} else {
531	delete $command{$name};
532	delete $COMMAND{"$name\000"};
533	}
534	}
535
536	# remove extcmds
537	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
538	delete $extcmd{$name};
539	}
540
541	if (my $cb = $pkg->can ("unload")) {
542	eval {
543	$cb->($pkg);
544	1
545	} or warn "$pkg unloaded, but with errors: $@";
546	}
547
548	Symbol::delete_package $pkg;
549	}
550
551	sub load_extensions {
552	my $LIBDIR = maps_directory "perl";
553
554	for my $ext (<$LIBDIR/*.ext>) {
555	next unless -r $ext;
556	eval {
557	load_extension $ext;
558	1
559	} or warn "$ext not loaded: $@";
560	}
561	}
562
563	sub _perl_reload(&) {
564	my ($msg) = @_;
565
566	$msg->("reloading...");
567
568	eval {
569	# 1. cancel all watchers
570	$_->cancel for Event::all_watchers;
571
572	# 2. unload all extensions
573	for (@exts) {
574	$msg->("unloading <$_>");
575	unload_extension $_;
576	}
577
578	# 3. unload all modules loaded from $LIBDIR
579	while (my ($k, $v) = each %INC) {
580	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
581
582	$msg->("removing <$k>");
583	delete $INC{$k};
584
585	$k =~ s/\.pm$//;
586	$k =~ s/\//::/g;
587
588	if (my $cb = $k->can ("unload_module")) {
589	$cb->();
590	}
591
592	Symbol::delete_package $k;
593	}
594
595	# 4. get rid of safe::, as good as possible
596	Symbol::delete_package "safe::$_"
597	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
598
599	# 5. remove register_script_function callbacks
600	# TODO
601
602	# 6. unload cf.pm "a bit"
603	delete $INC{"cf.pm"};
604
605	# don't, removes xs symbols, too,
606	# and global variables created in xs
607	#Symbol::delete_package __PACKAGE__;
608
609	# 7. reload cf.pm
610	$msg->("reloading cf.pm");
611	require cf;
612	};
613	$msg->($@) if $@;
614
615	$msg->("reloaded");
616	};
617
618	sub perl_reload() {
619	_perl_reload {
620	warn $_[0];
621	print "$_[0]\n";
622	};
623	}
624
625	register_command "perl-reload", 0, sub {
626	my ($who, $arg) = @_;
627
628	if ($who->flag (FLAG_WIZ)) {
629	_perl_reload {
630	warn $_[0];
631	$who->message ($_[0]);
632	};	1285	}
		1286
		1287	cf::override;
633	}	1288	},
634	};
635
636	#############################################################################
637	# extcmd framework, basically convert ext <msg>
638	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
639
640	attach_to_players
641	on_extcmd => sub {	1289	on_extcmd => sub {
642	my ($pl, $buf) = @_;	1290	my ($pl, $buf) = @_;
643		1291
644	my $msg = eval { from_json $buf };	1292	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
645		1293
646	if (ref $msg) {	1294	if (ref $msg) {
		1295	my ($type, $reply, @payload) =
		1296	"ARRAY" eq ref $msg
		1297	? @$msg
		1298	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1299
		1300	my @reply;
		1301
647	if (my $cb = $extcmd{$msg->{msgtype}}) {	1302	if (my $cb = $EXTCMD{$type}) {
648	if (my %reply = $cb->[0]->($pl, $msg)) {	1303	@reply = $cb->($pl, @payload);
649	$pl->ext_reply ($msg->{msgid}, %reply);	1304	}
		1305
		1306	$pl->ext_reply ($reply, @reply)
		1307	if $reply;
		1308
		1309	} else {
		1310	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1311	}
		1312
		1313	cf::override;
		1314	},
		1315	);
		1316
		1317	# "readahead" all extensions
		1318	sub cache_extensions {
		1319	my $grp = IO::AIO::aio_group;
		1320
		1321	add $grp IO::AIO::aio_readdir $LIBDIR, sub {
		1322	for (grep /\.ext$/, @{$_[0]}) {
		1323	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1324	}
		1325	};
		1326
		1327	$grp
		1328	}
		1329
		1330	sub load_extensions {
		1331	cf::sync_job {
		1332	my %todo;
		1333
		1334	for my $path (<$LIBDIR/*.ext>) {
		1335	next unless -r $path;
		1336
		1337	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1338	my $base = $1;
		1339	my $pkg = $1;
		1340	$pkg =~ s/[^[:word:]]/_/g;
		1341	$pkg = "ext::$pkg";
		1342
		1343	open my $fh, "<:utf8", $path
		1344	or die "$path: $!";
		1345
		1346	my $source = do { local $/; <$fh> };
		1347
		1348	my %ext = (
		1349	path => $path,
		1350	base => $base,
		1351	pkg => $pkg,
		1352	);
		1353
		1354	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1355	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1356
		1357	$ext{source} =
		1358	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1359	. "#line 1 \"$path\"\n{\n"
		1360	. $source
		1361	. "\n};\n1";
		1362
		1363	$todo{$base} = \%ext;
		1364	}
		1365
		1366	my %done;
		1367	while (%todo) {
		1368	my $progress;
		1369
		1370	while (my ($k, $v) = each %todo) {
		1371	for (split /,\s*/, $v->{meta}{depends}) {
		1372	goto skip
		1373	unless exists $done{$_};
		1374	}
		1375
		1376	warn "... loading '$k' into '$v->{pkg}'\n";
		1377
		1378	unless (eval $v->{source}) {
		1379	my $msg = $@ ? "$v->{path}: $@\n"
		1380	: "$v->{base}: extension inactive.\n";
		1381
		1382	if (exists $v->{meta}{mandatory}) {
		1383	warn $msg;
		1384	cf::cleanup "mandatory extension failed to load, exiting.";
		1385	}
		1386
		1387	warn $msg;
		1388	}
		1389
		1390	$done{$k} = delete $todo{$k};
		1391	push @EXTS, $v->{pkg};
		1392	$progress = 1;
		1393	}
		1394
		1395	skip:
		1396	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1397	unless $progress;
		1398	}
		1399	};
		1400	}
		1401
		1402	#############################################################################
		1403
		1404	=back
		1405
		1406	=head2 CORE EXTENSIONS
		1407
		1408	Functions and methods that extend core deliantra objects.
		1409
		1410	=cut
		1411
		1412	package cf::player;
		1413
		1414	use Coro::AIO;
		1415
		1416	=head3 cf::player
		1417
		1418	=over 4
		1419
		1420	=item cf::player::num_playing
		1421
		1422	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1423
		1424	=cut
		1425
		1426	sub num_playing {
		1427	scalar grep
		1428	$_->ob->map
		1429	&& !$_->hidden
		1430	&& !$_->ob->flag (cf::FLAG_WIZ),
		1431	cf::player::list
		1432	}
		1433
		1434	=item cf::player::find $login
		1435
		1436	Returns the given player object, loading it if necessary (might block).
		1437
		1438	=cut
		1439
		1440	sub playerdir($) {
		1441	"$PLAYERDIR/"
		1442	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1443	}
		1444
		1445	sub path($) {
		1446	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1447
		1448	(playerdir $login) . "/playerdata"
		1449	}
		1450
		1451	sub find_active($) {
		1452	$cf::PLAYER{$_[0]}
		1453	and $cf::PLAYER{$_[0]}->active
		1454	and $cf::PLAYER{$_[0]}
		1455	}
		1456
		1457	sub exists($) {
		1458	my ($login) = @_;
		1459
		1460	$cf::PLAYER{$login}
		1461	or !aio_stat path $login
		1462	}
		1463
		1464	sub find($) {
		1465	return $cf::PLAYER{$_[0]} || do {
		1466	my $login = $_[0];
		1467
		1468	my $guard = cf::lock_acquire "user_find:$login";
		1469
		1470	$cf::PLAYER{$_[0]} || do {
		1471	# rename old playerfiles to new ones
		1472	#TODO: remove when no longer required
		1473	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1474	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1475	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1476	aio_unlink +(playerdir $login) . "/$login.pl";
		1477
		1478	my $f = new_from_file cf::object::thawer path $login
		1479	or return;
		1480
		1481	my $pl = cf::player::load_pl $f
		1482	or return;
		1483
		1484	local $cf::PLAYER_LOADING{$login} = $pl;
		1485	$f->resolve_delayed_derefs;
		1486	$cf::PLAYER{$login} = $pl
		1487	}
		1488	}
		1489	}
		1490
		1491	sub save($) {
		1492	my ($pl) = @_;
		1493
		1494	return if $pl->{deny_save};
		1495
		1496	my $path = path $pl;
		1497	my $guard = cf::lock_acquire "user_save:$path";
		1498
		1499	return if $pl->{deny_save};
		1500
		1501	aio_mkdir playerdir $pl, 0770;
		1502	$pl->{last_save} = $cf::RUNTIME;
		1503
		1504	cf::get_slot 0.01;
		1505
		1506	$pl->save_pl ($path);
		1507	cf::cede_to_tick;
		1508	}
		1509
		1510	sub new($) {
		1511	my ($login) = @_;
		1512
		1513	my $self = create;
		1514
		1515	$self->ob->name ($login);
		1516	$self->{deny_save} = 1;
		1517
		1518	$cf::PLAYER{$login} = $self;
		1519
		1520	$self
		1521	}
		1522
		1523	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1524
		1525	=cut
		1526
		1527	sub send_msg {
		1528	my $ns = shift->ns
		1529	or return;
		1530	$ns->send_msg (@_);
		1531	}
		1532
		1533	=item $pl->quit_character
		1534
		1535	Nukes the player without looking back. If logged in, the connection will
		1536	be destroyed. May block for a long time.
		1537
		1538	=cut
		1539
		1540	sub quit_character {
		1541	my ($pl) = @_;
		1542
		1543	my $name = $pl->ob->name;
		1544
		1545	$pl->{deny_save} = 1;
		1546	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1547
		1548	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1549	$pl->deactivate;
		1550	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1551	$pl->ob->check_score;
		1552	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1553	$pl->ns->destroy if $pl->ns;
		1554
		1555	my $path = playerdir $pl;
		1556	my $temp = "$path~$cf::RUNTIME~deleting~";
		1557	aio_rename $path, $temp;
		1558	delete $cf::PLAYER{$pl->ob->name};
		1559	$pl->destroy;
		1560
		1561	my $prefix = qr<^~\Q$name\E/>;
		1562
		1563	# nuke player maps
		1564	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1565
		1566	IO::AIO::aio_rmtree $temp;
		1567	}
		1568
		1569	=item $pl->kick
		1570
		1571	Kicks a player out of the game. This destroys the connection.
		1572
		1573	=cut
		1574
		1575	sub kick {
		1576	my ($pl, $kicker) = @_;
		1577
		1578	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1579	$pl->killer ("kicked");
		1580	$pl->ns->destroy;
		1581	}
		1582
		1583	=item cf::player::list_logins
		1584
		1585	Returns am arrayref of all valid playernames in the system, can take a
		1586	while and may block, so not sync_job-capable, ever.
		1587
		1588	=cut
		1589
		1590	sub list_logins {
		1591	my $dirs = aio_readdir $PLAYERDIR
		1592	or return [];
		1593
		1594	my @logins;
		1595
		1596	for my $login (@$dirs) {
		1597	my $path = path $login;
		1598
		1599	# a .pst is a dead give-away for a valid player
		1600	# if no pst file found, open and chekc for blocked users
		1601	if (aio_stat "$path.pst") {
		1602	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1603	aio_read $fh, 0, 512, my $buf, 0 or next;
		1604	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1605	}
		1606
		1607	utf8::decode $login;
		1608	push @logins, $login;
		1609	}
		1610
		1611	\@logins
		1612	}
		1613
		1614	=item $player->maps
		1615
		1616	Returns an arrayref of map paths that are private for this
		1617	player. May block.
		1618
		1619	=cut
		1620
		1621	sub maps($) {
		1622	my ($pl) = @_;
		1623
		1624	$pl = ref $pl ? $pl->ob->name : $pl;
		1625
		1626	my $files = aio_readdir playerdir $pl
		1627	or return;
		1628
		1629	my @paths;
		1630
		1631	for (@$files) {
		1632	utf8::decode $_;
		1633	next if /\.(?:pl|pst)$/;
		1634	next unless /^$PATH_SEP/o;
		1635
		1636	push @paths, cf::map::normalise "~$pl/$_";
		1637	}
		1638
		1639	\@paths
		1640	}
		1641
		1642	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1643
		1644	Expand deliantra pod fragments into protocol xml.
		1645
		1646	=item $player->ext_reply ($msgid, @msg)
		1647
		1648	Sends an ext reply to the player.
		1649
		1650	=cut
		1651
		1652	sub ext_reply($$@) {
		1653	my ($self, $id, @msg) = @_;
		1654
		1655	$self->ns->ext_reply ($id, @msg)
		1656	}
		1657
		1658	=item $player->ext_msg ($type, @msg)
		1659
		1660	Sends an ext event to the client.
		1661
		1662	=cut
		1663
		1664	sub ext_msg($$@) {
		1665	my ($self, $type, @msg) = @_;
		1666
		1667	$self->ns->ext_msg ($type, @msg);
		1668	}
		1669
		1670	=head3 cf::region
		1671
		1672	=over 4
		1673
		1674	=cut
		1675
		1676	package cf::region;
		1677
		1678	=item cf::region::find_by_path $path
		1679
		1680	Tries to decuce the likely region for a map knowing only its path.
		1681
		1682	=cut
		1683
		1684	sub find_by_path($) {
		1685	my ($path) = @_;
		1686
		1687	my ($match, $specificity);
		1688
		1689	for my $region (list) {
		1690	if ($region->{match} && $path =~ $region->{match}) {
		1691	($match, $specificity) = ($region, $region->specificity)
		1692	if $region->specificity > $specificity;
		1693	}
		1694	}
		1695
		1696	$match
		1697	}
		1698
		1699	=back
		1700
		1701	=head3 cf::map
		1702
		1703	=over 4
		1704
		1705	=cut
		1706
		1707	package cf::map;
		1708
		1709	use Fcntl;
		1710	use Coro::AIO;
		1711
		1712	use overload
		1713	'""' => \&as_string,
		1714	fallback => 1;
		1715
		1716	our $MAX_RESET = 3600;
		1717	our $DEFAULT_RESET = 3000;
		1718
		1719	sub generate_random_map {
		1720	my ($self, $rmp) = @_;
		1721
		1722	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1723
		1724	# mit "rum" bekleckern, nicht
		1725	$self->_create_random_map (
		1726	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1727	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1728	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1729	$rmp->{exit_on_final_map},
		1730	$rmp->{xsize}, $rmp->{ysize},
		1731	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1732	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1733	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1734	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1735	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1736	(cf::region::find $rmp->{region}), $rmp->{custom}
		1737	)
		1738	}
		1739
		1740	=item cf::map->register ($regex, $prio)
		1741
		1742	Register a handler for the map path matching the given regex at the
		1743	givne priority (higher is better, built-in handlers have priority 0, the
		1744	default).
		1745
		1746	=cut
		1747
		1748	sub register {
		1749	my (undef, $regex, $prio) = @_;
		1750	my $pkg = caller;
		1751
		1752	no strict;
		1753	push @{"$pkg\::ISA"}, __PACKAGE__;
		1754
		1755	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1756	}
		1757
		1758	# also paths starting with '/'
		1759	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1760
		1761	sub thawer_merge {
		1762	my ($self, $merge) = @_;
		1763
		1764	# we have to keep some variables in memory intact
		1765	local $self->{path};
		1766	local $self->{load_path};
		1767
		1768	$self->SUPER::thawer_merge ($merge);
		1769	}
		1770
		1771	sub normalise {
		1772	my ($path, $base) = @_;
		1773
		1774	$path = "$path"; # make sure its a string
		1775
		1776	$path =~ s/\.map$//;
		1777
		1778	# map plan:
		1779	#
		1780	# /! non-realised random map exit (special hack!)
		1781	# {... are special paths that are not being touched
		1782	# ?xxx/... are special absolute paths
		1783	# ?random/... random maps
		1784	# /... normal maps
		1785	# ~user/... per-player map of a specific user
		1786
		1787	$path =~ s/$PATH_SEP/\//go;
		1788
		1789	# treat it as relative path if it starts with
		1790	# something that looks reasonable
		1791	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1792	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1793
		1794	$base =~ s{[^/]+/?$}{};
		1795	$path = "$base/$path";
		1796	}
		1797
		1798	for ($path) {
		1799	redo if s{//}{/};
		1800	redo if s{/\.?/}{/};
		1801	redo if s{/[^/]+/\.\./}{/};
		1802	}
		1803
		1804	$path
		1805	}
		1806
		1807	sub new_from_path {
		1808	my (undef, $path, $base) = @_;
		1809
		1810	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1811
		1812	$path = normalise $path, $base;
		1813
		1814	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1815	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1816	my $self = bless cf::map::new, $pkg;
		1817	$self->{path} = $path; $self->path ($path);
		1818	$self->init; # pass $1 etc.
		1819	return $self;
		1820	}
		1821	}
		1822
		1823	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1824	()
		1825	}
		1826
		1827	sub init {
		1828	my ($self) = @_;
		1829
		1830	$self
		1831	}
		1832
		1833	sub as_string {
		1834	my ($self) = @_;
		1835
		1836	"$self->{path}"
		1837	}
		1838
		1839	# the displayed name, this is a one way mapping
		1840	sub visible_name {
		1841	&as_string
		1842	}
		1843
		1844	# the original (read-only) location
		1845	sub load_path {
		1846	my ($self) = @_;
		1847
		1848	"$MAPDIR/$self->{path}.map"
		1849	}
		1850
		1851	# the temporary/swap location
		1852	sub save_path {
		1853	my ($self) = @_;
		1854
		1855	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1856	"$TMPDIR/$path.map"
		1857	}
		1858
		1859	# the unique path, undef == no special unique path
		1860	sub uniq_path {
		1861	my ($self) = @_;
		1862
		1863	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1864	"$UNIQUEDIR/$path"
		1865	}
		1866
		1867	sub decay_objects {
		1868	my ($self) = @_;
		1869
		1870	return if $self->{deny_reset};
		1871
		1872	$self->do_decay_objects;
		1873	}
		1874
		1875	sub unlink_save {
		1876	my ($self) = @_;
		1877
		1878	utf8::encode (my $save = $self->save_path);
		1879	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1880	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1881	}
		1882
		1883	sub load_header_from($) {
		1884	my ($self, $path) = @_;
		1885
		1886	utf8::encode $path;
		1887	my $f = new_from_file cf::object::thawer $path
		1888	or return;
		1889
		1890	$self->_load_header ($f)
		1891	or return;
		1892
		1893	local $MAP_LOADING{$self->{path}} = $self;
		1894	$f->resolve_delayed_derefs;
		1895
		1896	$self->{load_path} = $path;
		1897
		1898	1
		1899	}
		1900
		1901	sub load_header_orig {
		1902	my ($self) = @_;
		1903
		1904	$self->load_header_from ($self->load_path)
		1905	}
		1906
		1907	sub load_header_temp {
		1908	my ($self) = @_;
		1909
		1910	$self->load_header_from ($self->save_path)
		1911	}
		1912
		1913	sub prepare_temp {
		1914	my ($self) = @_;
		1915
		1916	$self->last_access ((delete $self->{last_access})
		1917	|| $cf::RUNTIME); #d#
		1918	# safety
		1919	$self->{instantiate_time} = $cf::RUNTIME
		1920	if $self->{instantiate_time} > $cf::RUNTIME;
		1921	}
		1922
		1923	sub prepare_orig {
		1924	my ($self) = @_;
		1925
		1926	$self->{load_original} = 1;
		1927	$self->{instantiate_time} = $cf::RUNTIME;
		1928	$self->last_access ($cf::RUNTIME);
		1929	$self->instantiate;
		1930	}
		1931
		1932	sub load_header {
		1933	my ($self) = @_;
		1934
		1935	if ($self->load_header_temp) {
		1936	$self->prepare_temp;
		1937	} else {
		1938	$self->load_header_orig
		1939	or return;
		1940	$self->prepare_orig;
		1941	}
		1942
		1943	$self->{deny_reset} = 1
		1944	if $self->no_reset;
		1945
		1946	$self->default_region (cf::region::find_by_path $self->{path})
		1947	unless $self->default_region;
		1948
		1949	1
		1950	}
		1951
		1952	sub find;
		1953	sub find {
		1954	my ($path, $origin) = @_;
		1955
		1956	$path = normalise $path, $origin && $origin->path;
		1957
		1958	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		1959	my $guard2 = cf::lock_acquire "map_find:$path";
		1960
		1961	$cf::MAP{$path} || do {
		1962	my $map = new_from_path cf::map $path
		1963	or return;
		1964
		1965	$map->{last_save} = $cf::RUNTIME;
		1966
		1967	$map->load_header
		1968	or return;
		1969
		1970	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1971	# doing this can freeze the server in a sync job, obviously
		1972	#$cf::WAIT_FOR_TICK->wait;
		1973	undef $guard2;
		1974	undef $guard1;
		1975	$map->reset;
		1976	return find $path;
		1977	}
		1978
		1979	$cf::MAP{$path} = $map
		1980	}
		1981	}
		1982
		1983	sub pre_load { }
		1984	sub post_load { }
		1985
		1986	sub load {
		1987	my ($self) = @_;
		1988
		1989	local $self->{deny_reset} = 1; # loading can take a long time
		1990
		1991	my $path = $self->{path};
		1992
		1993	{
		1994	my $guard = cf::lock_acquire "map_data:$path";
		1995
		1996	return unless $self->valid;
		1997	return unless $self->in_memory == cf::MAP_SWAPPED;
		1998
		1999	$self->in_memory (cf::MAP_LOADING);
		2000
		2001	$self->alloc;
		2002
		2003	$self->pre_load;
		2004	cf::cede_to_tick;
		2005
		2006	my $f = new_from_file cf::object::thawer $self->{load_path};
		2007	$f->skip_block;
		2008	$self->_load_objects ($f)
		2009	or return;
		2010
		2011	$self->post_load_original
		2012	if delete $self->{load_original};
		2013
		2014	if (my $uniq = $self->uniq_path) {
		2015	utf8::encode $uniq;
		2016	unless (aio_stat $uniq) {
		2017	if (my $f = new_from_file cf::object::thawer $uniq) {
		2018	$self->clear_unique_items;
		2019	$self->_load_objects ($f);
		2020	$f->resolve_delayed_derefs;
650	}	2021	}
651	}	2022	}
652	} else {
653	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
654	}	2023	}
655		2024
656	cf::override;	2025	$f->resolve_delayed_derefs;
		2026
		2027	cf::cede_to_tick;
		2028	# now do the right thing for maps
		2029	$self->link_multipart_objects;
		2030	$self->difficulty ($self->estimate_difficulty)
		2031	unless $self->difficulty;
		2032	cf::cede_to_tick;
		2033
		2034	unless ($self->{deny_activate}) {
		2035	$self->decay_objects;
		2036	$self->fix_auto_apply;
		2037	$self->update_buttons;
		2038	cf::cede_to_tick;
		2039	$self->activate;
		2040	}
		2041
		2042	$self->{last_save} = $cf::RUNTIME;
		2043	$self->last_access ($cf::RUNTIME);
		2044
		2045	$self->in_memory (cf::MAP_ACTIVE);
657	},	2046	}
658	;
659		2047
660	#############################################################################	2048	$self->post_load;
661	# load/save/clean perl data associated with a map	2049	}
662		2050
663	*cf::mapsupport::on_clean = sub {	2051	sub customise_for {
		2052	my ($self, $ob) = @_;
		2053
		2054	return find "~" . $ob->name . "/" . $self->{path}
		2055	if $self->per_player;
		2056
		2057	# return find "?party/" . $ob->name . "/" . $self->{path}
		2058	# if $self->per_party;
		2059
		2060	$self
		2061	}
		2062
		2063	# find and load all maps in the 3x3 area around a map
		2064	sub load_neighbours {
664	my ($map) = @_;	2065	my ($map) = @_;
665		2066
666	my $path = $map->tmpname;	2067	my @neigh; # diagonal neighbours
667	defined $path or return;
668		2068
669	unlink "$path.cfperl";	2069	for (0 .. 3) {
670	unlink "$path.pst";	2070	my $neigh = $map->tile_path ($_)
671	};	2071	or next;
		2072	$neigh = find $neigh, $map
		2073	or next;
		2074	$neigh->load;
672		2075
673	*cf::mapsupport::on_swapin =	2076	push @neigh,
674	*cf::mapsupport::on_load = sub {	2077	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2078	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2079	}
		2080
		2081	for (grep defined $_->[0], @neigh) {
		2082	my ($path, $origin) = @$_;
		2083	my $neigh = find $path, $origin
		2084	or next;
		2085	$neigh->load;
		2086	}
		2087	}
		2088
		2089	sub find_sync {
		2090	my ($path, $origin) = @_;
		2091
		2092	cf::sync_job { find $path, $origin }
		2093	}
		2094
		2095	sub do_load_sync {
675	my ($map) = @_;	2096	my ($map) = @_;
676		2097
677	my $path = $map->tmpname;	2098	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
678	$path = $map->path unless defined $path;	2099	if $Coro::current == $Coro::main;
679		2100
680	open my $fh, "<:raw", "$path.cfperl"	2101	cf::sync_job { $map->load };
681	or return; # no perl data
682
683	my $data = Storable::thaw do { local $/; <$fh> };
684
685	$data->{version} <= 1
686	or return; # too new
687
688	$map->_set_obs ($data->{obs});
689	};
690
691	attach_to_maps prio => -10000, package => cf::mapsupport::;
692
693	#############################################################################
694	# load/save perl data associated with player->ob objects
695
696	sub all_objects(@) {
697	@_, map all_objects ($_->inv), @_
698	}	2102	}
699		2103
700	attach_to_players	2104	our %MAP_PREFETCH;
701	on_load => sub {	2105	our $MAP_PREFETCHER = undef;
702	my ($pl, $path) = @_;
703		2106
704	for my $o (all_objects $pl->ob) {	2107	sub find_async {
705	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2108	my ($path, $origin, $load) = @_;
706	$o->set_ob_key_value ("_perl_data");
707		2109
708	%$o = %{ Storable::thaw pack "H*", $value };	2110	$path = normalise $path, $origin && $origin->{path};
		2111
		2112	if (my $map = $cf::MAP{$path}) {
		2113	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2114	}
		2115
		2116	$MAP_PREFETCH{$path} |= $load;
		2117
		2118	$MAP_PREFETCHER ||= cf::async {
		2119	$Coro::current->{desc} = "map prefetcher";
		2120
		2121	while (%MAP_PREFETCH) {
		2122	while (my ($k, $v) = each %MAP_PREFETCH) {
		2123	if (my $map = find $k) {
		2124	$map->load if $v;
		2125	}
		2126
		2127	delete $MAP_PREFETCH{$k};
709	}	2128	}
710	}	2129	}
		2130	undef $MAP_PREFETCHER;
		2131	};
		2132	$MAP_PREFETCHER->prio (6);
		2133
		2134	()
		2135	}
		2136
		2137	sub save {
		2138	my ($self) = @_;
		2139
		2140	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2141
		2142	$self->{last_save} = $cf::RUNTIME;
		2143
		2144	return unless $self->dirty;
		2145
		2146	my $save = $self->save_path; utf8::encode $save;
		2147	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2148
		2149	$self->{load_path} = $save;
		2150
		2151	return if $self->{deny_save};
		2152
		2153	local $self->{last_access} = $self->last_access;#d#
		2154
		2155	cf::async {
		2156	$Coro::current->{desc} = "map player save";
		2157	$_->contr->save for $self->players;
		2158	};
		2159
		2160	cf::get_slot 0.02;
		2161
		2162	if ($uniq) {
		2163	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2164	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2165	} else {
		2166	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
711	},	2167	}
712	;
713
714	#############################################################################
715	# core extensions - in perl
716
717	=item cf::player::exists $login
718
719	Returns true when the given account exists.
720
721	=cut
722
723	sub cf::player::exists($) {
724	cf::player::find $_[0]
725	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
726	}	2168	}
727		2169
		2170	sub swap_out {
		2171	my ($self) = @_;
		2172
		2173	# save first because save cedes
		2174	$self->save;
		2175
		2176	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2177
		2178	return if $self->players;
		2179	return if $self->in_memory != cf::MAP_ACTIVE;
		2180	return if $self->{deny_save};
		2181
		2182	$self->in_memory (cf::MAP_SWAPPED);
		2183
		2184	$self->deactivate;
		2185	$_->clear_links_to ($self) for values %cf::MAP;
		2186	$self->clear;
		2187	}
		2188
		2189	sub reset_at {
		2190	my ($self) = @_;
		2191
		2192	# TODO: safety, remove and allow resettable per-player maps
		2193	return 1e99 if $self->{deny_reset};
		2194
		2195	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2196	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2197
		2198	$time + $to
		2199	}
		2200
		2201	sub should_reset {
		2202	my ($self) = @_;
		2203
		2204	$self->reset_at <= $cf::RUNTIME
		2205	}
		2206
		2207	sub reset {
		2208	my ($self) = @_;
		2209
		2210	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2211
		2212	return if $self->players;
		2213
		2214	warn "resetting map ", $self->path;
		2215
		2216	$self->in_memory (cf::MAP_SWAPPED);
		2217
		2218	# need to save uniques path
		2219	unless ($self->{deny_save}) {
		2220	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2221
		2222	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2223	if $uniq;
		2224	}
		2225
		2226	delete $cf::MAP{$self->path};
		2227
		2228	$self->deactivate;
		2229	$_->clear_links_to ($self) for values %cf::MAP;
		2230	$self->clear;
		2231
		2232	$self->unlink_save;
		2233	$self->destroy;
		2234	}
		2235
		2236	my $nuke_counter = "aaaa";
		2237
		2238	sub nuke {
		2239	my ($self) = @_;
		2240
		2241	{
		2242	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2243
		2244	delete $cf::MAP{$self->path};
		2245
		2246	$self->unlink_save;
		2247
		2248	bless $self, "cf::map";
		2249	delete $self->{deny_reset};
		2250	$self->{deny_save} = 1;
		2251	$self->reset_timeout (1);
		2252	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2253
		2254	$cf::MAP{$self->path} = $self;
		2255	}
		2256
		2257	$self->reset; # polite request, might not happen
		2258	}
		2259
		2260	=item $maps = cf::map::tmp_maps
		2261
		2262	Returns an arrayref with all map paths of currently instantiated and saved
		2263	maps. May block.
		2264
		2265	=cut
		2266
		2267	sub tmp_maps() {
		2268	[
		2269	map {
		2270	utf8::decode $_;
		2271	/\.map$/
		2272	? normalise $_
		2273	: ()
		2274	} @{ aio_readdir $TMPDIR or [] }
		2275	]
		2276	}
		2277
		2278	=item $maps = cf::map::random_maps
		2279
		2280	Returns an arrayref with all map paths of currently instantiated and saved
		2281	random maps. May block.
		2282
		2283	=cut
		2284
		2285	sub random_maps() {
		2286	[
		2287	map {
		2288	utf8::decode $_;
		2289	/\.map$/
		2290	? normalise "?random/$_"
		2291	: ()
		2292	} @{ aio_readdir $RANDOMDIR or [] }
		2293	]
		2294	}
		2295
		2296	=item cf::map::unique_maps
		2297
		2298	Returns an arrayref of paths of all shared maps that have
		2299	instantiated unique items. May block.
		2300
		2301	=cut
		2302
		2303	sub unique_maps() {
		2304	[
		2305	map {
		2306	utf8::decode $_;
		2307	s/\.map$//; # TODO future compatibility hack
		2308	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2309	? ()
		2310	: normalise $_
		2311	} @{ aio_readdir $UNIQUEDIR or [] }
		2312	]
		2313	}
		2314
		2315	=back
		2316
		2317	=head3 cf::object
		2318
		2319	=cut
		2320
		2321	package cf::object;
		2322
		2323	=over 4
		2324
		2325	=item $ob->inv_recursive
		2326
		2327	Returns the inventory of the object I<and> their inventories, recursively,
		2328	but I<not> the object itself.
		2329
		2330	=cut
		2331
		2332	sub inv_recursive_;
		2333	sub inv_recursive_ {
		2334	map { $_, inv_recursive_ $_->inv } @_
		2335	}
		2336
		2337	sub inv_recursive {
		2338	inv_recursive_ inv $_[0]
		2339	}
		2340
		2341	=item $ref = $ob->ref
		2342
		2343	Creates and returns a persistent reference to an object that can be stored as a string.
		2344
		2345	=item $ob = cf::object::deref ($refstring)
		2346
		2347	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2348	even if the object actually exists. May block.
		2349
		2350	=cut
		2351
		2352	sub deref {
		2353	my ($ref) = @_;
		2354
		2355	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2356	my ($uuid, $name) = ($1, $2);
		2357	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2358	or return;
		2359	$pl->ob->uuid eq $uuid
		2360	or return;
		2361
		2362	$pl->ob
		2363	} else {
		2364	warn "$ref: cannot resolve object reference\n";
		2365	undef
		2366	}
		2367	}
		2368
		2369	package cf;
		2370
		2371	=back
		2372
		2373	=head3 cf::object::player
		2374
		2375	=over 4
		2376
728	=item $player->reply ($npc, $msg[, $flags])	2377	=item $player_object->reply ($npc, $msg[, $flags])
729		2378
730	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2379	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
731	can be C<undef>. Does the right thing when the player is currently in a	2380	can be C<undef>. Does the right thing when the player is currently in a
732	dialogue with the given NPC character.	2381	dialogue with the given NPC character.
733		2382
734	=cut	2383	=cut
735		2384
		2385	our $SAY_CHANNEL = {
		2386	id => "say",
		2387	title => "Map",
		2388	reply => "say ",
		2389	tooltip => "Things said to and replied from npcs near you and other players on the same map only.",
		2390	};
		2391
		2392	our $CHAT_CHANNEL = {
		2393	id => "chat",
		2394	title => "Chat",
		2395	reply => "chat ",
		2396	tooltip => "Player chat and shouts, global to the server.",
		2397	};
		2398
736	# rough implementation of a future "reply" method that works	2399	# rough implementation of a future "reply" method that works
737	# with dialog boxes.	2400	# with dialog boxes.
		2401	#TODO: the first argument must go, split into a $npc->reply_to ( method
738	sub cf::object::player::reply($$$;$) {	2402	sub cf::object::player::reply($$$;$) {
739	my ($self, $npc, $msg, $flags) = @_;	2403	my ($self, $npc, $msg, $flags) = @_;
740		2404
741	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2405	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
742		2406
743	if ($self->{record_replies}) {	2407	if ($self->{record_replies}) {
744	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2408	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2409
745	} else {	2410	} else {
		2411	my $pl = $self->contr;
		2412
		2413	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2414	my $dialog = $pl->{npc_dialog};
		2415	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2416
		2417	} else {
746	$msg = $npc->name . " says: $msg" if $npc;	2418	$msg = $npc->name . " says: $msg" if $npc;
747	$self->message ($msg, $flags);	2419	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2420	}
		2421	}
		2422	}
		2423
		2424	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2425
		2426	=cut
		2427
		2428	sub cf::object::send_msg {
		2429	my $pl = shift->contr
		2430	or return;
		2431	$pl->send_msg (@_);
		2432	}
		2433
		2434	=item $player_object->may ("access")
		2435
		2436	Returns wether the given player is authorized to access resource "access"
		2437	(e.g. "command_wizcast").
		2438
		2439	=cut
		2440
		2441	sub cf::object::player::may {
		2442	my ($self, $access) = @_;
		2443
		2444	$self->flag (cf::FLAG_WIZ) ||
		2445	(ref $cf::CFG{"may_$access"}
		2446	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2447	: $cf::CFG{"may_$access"})
		2448	}
		2449
		2450	=item $player_object->enter_link
		2451
		2452	Freezes the player and moves him/her to a special map (C<{link}>).
		2453
		2454	The player should be reasonably safe there for short amounts of time (e.g.
		2455	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2456	though, as the palyer cannot control the character while it is on the link
		2457	map.
		2458
		2459	Will never block.
		2460
		2461	=item $player_object->leave_link ($map, $x, $y)
		2462
		2463	Moves the player out of the special C<{link}> map onto the specified
		2464	map. If the map is not valid (or omitted), the player will be moved back
		2465	to the location he/she was before the call to C<enter_link>, or, if that
		2466	fails, to the emergency map position.
		2467
		2468	Might block.
		2469
		2470	=cut
		2471
		2472	sub link_map {
		2473	unless ($LINK_MAP) {
		2474	$LINK_MAP = cf::map::find "{link}"
		2475	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2476	$LINK_MAP->load;
		2477	}
		2478
		2479	$LINK_MAP
		2480	}
		2481
		2482	sub cf::object::player::enter_link {
		2483	my ($self) = @_;
		2484
		2485	$self->deactivate_recursive;
		2486
		2487	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2488
		2489	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2490	if $self->map && $self->map->{path} ne "{link}";
		2491
		2492	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2493	}
		2494
		2495	sub cf::object::player::leave_link {
		2496	my ($self, $map, $x, $y) = @_;
		2497
		2498	return unless $self->contr->active;
		2499
		2500	my $link_pos = delete $self->{_link_pos};
		2501
		2502	unless ($map) {
		2503	# restore original map position
		2504	($map, $x, $y) = @{ $link_pos || [] };
		2505	$map = cf::map::find $map;
		2506
		2507	unless ($map) {
		2508	($map, $x, $y) = @$EMERGENCY_POSITION;
		2509	$map = cf::map::find $map
		2510	or die "FATAL: cannot load emergency map\n";
		2511	}
		2512	}
		2513
		2514	($x, $y) = (-1, -1)
		2515	unless (defined $x) && (defined $y);
		2516
		2517	# use -1 or undef as default coordinates, not 0, 0
		2518	($x, $y) = ($map->enter_x, $map->enter_y)
		2519	if $x <=0 && $y <= 0;
		2520
		2521	$map->load;
		2522	$map->load_neighbours;
		2523
		2524	return unless $self->contr->active;
		2525	$self->flag (cf::FLAG_DEBUG, 0);#d# temp
		2526	$self->activate_recursive;
		2527
		2528	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2529	$self->enter_map ($map, $x, $y);
		2530	}
		2531
		2532	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2533
		2534	Moves the player to the given map-path and coordinates by first freezing
		2535	her, loading and preparing them map, calling the provided $check callback
		2536	that has to return the map if sucecssful, and then unfreezes the player on
		2537	the new (success) or old (failed) map position. In either case, $done will
		2538	be called at the end of this process.
		2539
		2540	Note that $check will be called with a potentially non-loaded map, so if
		2541	it needs a loaded map it has to call C<< ->load >>.
		2542
		2543	=cut
		2544
		2545	our $GOTOGEN;
		2546
		2547	sub cf::object::player::goto {
		2548	my ($self, $path, $x, $y, $check, $done) = @_;
		2549
		2550	# do generation counting so two concurrent goto's will be executed in-order
		2551	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2552
		2553	$self->enter_link;
		2554
		2555	(async {
		2556	$Coro::current->{desc} = "player::goto $path $x $y";
		2557
		2558	# *tag paths override both path and x|y
		2559	if ($path =~ /^\*(.*)$/) {
		2560	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2561	my $ob = $obs[rand @obs];
		2562
		2563	# see if we actually can go there
		2564	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2565	$ob = $obs[rand @obs];
		2566	} else {
		2567	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2568	}
		2569	# else put us there anyways for now #d#
		2570
		2571	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2572	} else {
		2573	($path, $x, $y) = (undef, undef, undef);
		2574	}
		2575	}
		2576
		2577	my $map = eval {
		2578	my $map = defined $path ? cf::map::find $path : undef;
		2579
		2580	if ($map) {
		2581	$map = $map->customise_for ($self);
		2582	$map = $check->($map) if $check && $map;
		2583	} else {
		2584	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2585	}
		2586
		2587	$map
		2588	};
		2589
		2590	if ($@) {
		2591	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2592	LOG llevError | logBacktrace, Carp::longmess $@;
		2593	}
		2594
		2595	if ($gen == $self->{_goto_generation}) {
		2596	delete $self->{_goto_generation};
		2597	$self->leave_link ($map, $x, $y);
		2598	}
		2599
		2600	$done->() if $done;
		2601	})->prio (1);
		2602	}
		2603
		2604	=item $player_object->enter_exit ($exit_object)
		2605
		2606	=cut
		2607
		2608	sub parse_random_map_params {
		2609	my ($spec) = @_;
		2610
		2611	my $rmp = { # defaults
		2612	xsize => (cf::rndm 15, 40),
		2613	ysize => (cf::rndm 15, 40),
		2614	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2615	#layout => string,
748	}	2616	};
749	}
750		2617
		2618	for (split /\n/, $spec) {
		2619	my ($k, $v) = split /\s+/, $_, 2;
		2620
		2621	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2622	}
		2623
		2624	$rmp
		2625	}
		2626
		2627	sub prepare_random_map {
		2628	my ($exit) = @_;
		2629
		2630	# all this does is basically replace the /! path by
		2631	# a new random map path (?random/...) with a seed
		2632	# that depends on the exit object
		2633
		2634	my $rmp = parse_random_map_params $exit->msg;
		2635
		2636	if ($exit->map) {
		2637	$rmp->{region} = $exit->region->name;
		2638	$rmp->{origin_map} = $exit->map->path;
		2639	$rmp->{origin_x} = $exit->x;
		2640	$rmp->{origin_y} = $exit->y;
		2641
		2642	$exit->map->touch;
		2643	}
		2644
		2645	$rmp->{random_seed} ||= $exit->random_seed;
		2646
		2647	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2648	my $md5 = Digest::MD5::md5_hex $data;
		2649	my $meta = "$RANDOMDIR/$md5.meta";
		2650
		2651	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2652	aio_write $fh, 0, (length $data), $data, 0;
		2653	undef $fh;
		2654	aio_rename "$meta~", $meta;
		2655
		2656	my $slaying = "?random/$md5";
		2657
		2658	if ($exit->valid) {
		2659	$exit->slaying ("?random/$md5");
		2660	$exit->msg (undef);
		2661	}
		2662	}
		2663	}
		2664
		2665	sub cf::object::player::enter_exit {
		2666	my ($self, $exit) = @_;
		2667
		2668	return unless $self->type == cf::PLAYER;
		2669
		2670	$self->enter_link;
		2671
		2672	(async {
		2673	$Coro::current->{desc} = "enter_exit";
		2674
		2675	unless (eval {
		2676	$self->deactivate_recursive; # just to be sure
		2677
		2678	# random map handling
		2679	{
		2680	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2681
		2682	prepare_random_map $exit
		2683	if $exit->slaying eq "/!";
		2684	}
		2685
		2686	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2687	my $x = $exit->stats->hp;
		2688	my $y = $exit->stats->sp;
		2689
		2690	$self->goto ($map, $x, $y);
		2691
		2692	# if exit is damned, update players death & WoR home-position
		2693	$self->contr->savebed ($map, $x, $y)
		2694	if $exit->flag (cf::FLAG_DAMNED);
		2695
		2696	1
		2697	}) {
		2698	$self->message ("Something went wrong deep within the deliantra server. "
		2699	. "I'll try to bring you back to the map you were before. "
		2700	. "Please report this to the dungeon master!",
		2701	cf::NDI_UNIQUE | cf::NDI_RED);
		2702
		2703	warn "ERROR in enter_exit: $@";
		2704	$self->leave_link;
		2705	}
		2706	})->prio (1);
		2707	}
		2708
		2709	=head3 cf::client
		2710
		2711	=over 4
		2712
		2713	=item $client->send_drawinfo ($text, $flags)
		2714
		2715	Sends a drawinfo packet to the client. Circumvents output buffering so
		2716	should not be used under normal circumstances.
		2717
		2718	=cut
		2719
		2720	sub cf::client::send_drawinfo {
		2721	my ($self, $text, $flags) = @_;
		2722
		2723	utf8::encode $text;
		2724	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2725	}
		2726
		2727	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2728
		2729	Send a drawinfo or msg packet to the client, formatting the msg for the
		2730	client if neccessary. C<$type> should be a string identifying the type of
		2731	the message, with C<log> being the default. If C<$color> is negative, suppress
		2732	the message unless the client supports the msg packet.
		2733
		2734	=cut
		2735
		2736	# non-persistent channels (usually the info channel)
		2737	our %CHANNEL = (
		2738	"c/identify" => {
		2739	id => "infobox",
		2740	title => "Identify",
		2741	reply => undef,
		2742	tooltip => "Items recently identified",
		2743	},
		2744	"c/examine" => {
		2745	id => "infobox",
		2746	title => "Examine",
		2747	reply => undef,
		2748	tooltip => "Signs and other items you examined",
		2749	},
		2750	"c/book" => {
		2751	id => "infobox",
		2752	title => "Book",
		2753	reply => undef,
		2754	tooltip => "The contents of a note or book",
		2755	},
		2756	"c/lookat" => {
		2757	id => "infobox",
		2758	title => "Look",
		2759	reply => undef,
		2760	tooltip => "What you saw there",
		2761	},
		2762	"c/who" => {
		2763	id => "infobox",
		2764	title => "Players",
		2765	reply => undef,
		2766	tooltip => "Shows players who are currently online",
		2767	},
		2768	"c/body" => {
		2769	id => "infobox",
		2770	title => "Body Parts",
		2771	reply => undef,
		2772	tooltip => "Shows which body parts you posess and are available",
		2773	},
		2774	"c/skills" => {
		2775	id => "infobox",
		2776	title => "Skills",
		2777	reply => undef,
		2778	tooltip => "Shows your experience per skill and item power",
		2779	},
		2780	"c/uptime" => {
		2781	id => "infobox",
		2782	title => "Uptime",
		2783	reply => undef,
		2784	tooltip => "How long the server has been running since last restart",
		2785	},
		2786	"c/mapinfo" => {
		2787	id => "infobox",
		2788	title => "Map Info",
		2789	reply => undef,
		2790	tooltip => "Information related to the maps",
		2791	},
		2792	"c/party" => {
		2793	id => "party",
		2794	title => "Party",
		2795	reply => "gsay ",
		2796	tooltip => "Messages and chat related to your party",
		2797	},
		2798	"c/death" => {
		2799	id => "death",
		2800	title => "Death",
		2801	reply => undef,
		2802	tooltip => "Reason for and more info about your most recent death",
		2803	},
		2804	"c/say" => $SAY_CHANNEL,
		2805	"c/chat" => $CHAT_CHANNEL,
		2806	);
		2807
		2808	sub cf::client::send_msg {
		2809	my ($self, $channel, $msg, $color, @extra) = @_;
		2810
		2811	$msg = $self->pl->expand_cfpod ($msg)
		2812	unless $color & cf::NDI_VERBATIM;
		2813
		2814	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2815
		2816	# check predefined channels, for the benefit of C
		2817	if ($CHANNEL{$channel}) {
		2818	$channel = $CHANNEL{$channel};
		2819
		2820	$self->ext_msg (channel_info => $channel);
		2821	$channel = $channel->{id};
		2822
		2823	} elsif (ref $channel) {
		2824	# send meta info to client, if not yet sent
		2825	unless (exists $self->{channel}{$channel->{id}}) {
		2826	$self->{channel}{$channel->{id}} = $channel;
		2827	$self->ext_msg (channel_info => $channel);
		2828	}
		2829
		2830	$channel = $channel->{id};
		2831	}
		2832
		2833	return unless @extra || length $msg;
		2834
		2835	# default colour, mask it out
		2836	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2837	if $color & cf::NDI_DEF;
		2838
		2839	my $pkt = "msg "
		2840	. $self->{json_coder}->encode (
		2841	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2842	);
		2843
		2844	# try lzf for large packets
		2845	$pkt = "lzf " . Compress::LZF::compress $pkt
		2846	if 1024 <= length $pkt and $self->{can_lzf};
		2847
		2848	# split very large packets
		2849	if (8192 < length $pkt and $self->{can_lzf}) {
		2850	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2851	$pkt = "frag";
		2852	}
		2853
		2854	$self->send_packet ($pkt);
		2855	}
		2856
		2857	=item $client->ext_msg ($type, @msg)
		2858
		2859	Sends an ext event to the client.
		2860
		2861	=cut
		2862
		2863	sub cf::client::ext_msg($$@) {
		2864	my ($self, $type, @msg) = @_;
		2865
		2866	if ($self->extcmd == 2) {
		2867	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2868	} elsif ($self->extcmd == 1) { # TODO: remove
		2869	push @msg, msgtype => "event_$type";
		2870	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2871	}
		2872	}
		2873
751	=item $player->ext_reply ($msgid, $msgtype, %msg)	2874	=item $client->ext_reply ($msgid, @msg)
752		2875
753	Sends an ext reply to the player.	2876	Sends an ext reply to the client.
754		2877
755	=cut	2878	=cut
756		2879
757	sub cf::player::ext_reply($$$%) {	2880	sub cf::client::ext_reply($$@) {
758	my ($self, $id, %msg) = @_;	2881	my ($self, $id, @msg) = @_;
759		2882
760	$msg{msgid} = $id;	2883	if ($self->extcmd == 2) {
761		2884	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
762	$self->send ("ext " . to_json \%msg);	2885	} elsif ($self->extcmd == 1) {
		2886	#TODO: version 1, remove
		2887	unshift @msg, msgtype => "reply", msgid => $id;
		2888	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2889	}
763	}	2890	}
764		2891
765	#############################################################################	2892	=item $success = $client->query ($flags, "text", \&cb)
766	# map scripting support	2893
		2894	Queues a query to the client, calling the given callback with
		2895	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2896	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2897
		2898	Queries can fail, so check the return code. Or don't, as queries will
		2899	become reliable at some point in the future.
		2900
		2901	=cut
		2902
		2903	sub cf::client::query {
		2904	my ($self, $flags, $text, $cb) = @_;
		2905
		2906	return unless $self->state == ST_PLAYING
		2907	|| $self->state == ST_SETUP
		2908	|| $self->state == ST_CUSTOM;
		2909
		2910	$self->state (ST_CUSTOM);
		2911
		2912	utf8::encode $text;
		2913	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2914
		2915	$self->send_packet ($self->{query_queue}[0][0])
		2916	if @{ $self->{query_queue} } == 1;
		2917
		2918	1
		2919	}
		2920
		2921	cf::client->attach (
		2922	on_connect => sub {
		2923	my ($ns) = @_;
		2924
		2925	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2926	},
		2927	on_reply => sub {
		2928	my ($ns, $msg) = @_;
		2929
		2930	# this weird shuffling is so that direct followup queries
		2931	# get handled first
		2932	my $queue = delete $ns->{query_queue}
		2933	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2934
		2935	(shift @$queue)->[1]->($msg);
		2936	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2937
		2938	push @{ $ns->{query_queue} }, @$queue;
		2939
		2940	if (@{ $ns->{query_queue} } == @$queue) {
		2941	if (@$queue) {
		2942	$ns->send_packet ($ns->{query_queue}[0][0]);
		2943	} else {
		2944	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2945	}
		2946	}
		2947	},
		2948	on_exticmd => sub {
		2949	my ($ns, $buf) = @_;
		2950
		2951	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2952
		2953	if (ref $msg) {
		2954	my ($type, $reply, @payload) =
		2955	"ARRAY" eq ref $msg
		2956	? @$msg
		2957	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2958
		2959	my @reply;
		2960
		2961	if (my $cb = $EXTICMD{$type}) {
		2962	@reply = $cb->($ns, @payload);
		2963	}
		2964
		2965	$ns->ext_reply ($reply, @reply)
		2966	if $reply;
		2967
		2968	} else {
		2969	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2970	}
		2971
		2972	cf::override;
		2973	},
		2974	);
		2975
		2976	=item $client->async (\&cb)
		2977
		2978	Create a new coroutine, running the specified callback. The coroutine will
		2979	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2980	or loss of connection).
		2981
		2982	=cut
		2983
		2984	sub cf::client::async {
		2985	my ($self, $cb) = @_;
		2986
		2987	my $coro = &Coro::async ($cb);
		2988
		2989	$coro->on_destroy (sub {
		2990	delete $self->{_coro}{$coro+0};
		2991	});
		2992
		2993	$self->{_coro}{$coro+0} = $coro;
		2994
		2995	$coro
		2996	}
		2997
		2998	cf::client->attach (
		2999	on_destroy => sub {
		3000	my ($ns) = @_;
		3001
		3002	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3003	},
		3004	);
		3005
		3006	=back
		3007
		3008
		3009	=head2 SAFE SCRIPTING
		3010
		3011	Functions that provide a safe environment to compile and execute
		3012	snippets of perl code without them endangering the safety of the server
		3013	itself. Looping constructs, I/O operators and other built-in functionality
		3014	is not available in the safe scripting environment, and the number of
		3015	functions and methods that can be called is greatly reduced.
		3016
		3017	=cut
767		3018
768	our $safe = new Safe "safe";	3019	our $safe = new Safe "safe";
769	our $safe_hole = new Safe::Hole;	3020	our $safe_hole = new Safe::Hole;
770		3021
771	$SIG{FPE} = 'IGNORE';	3022	$SIG{FPE} = 'IGNORE';
772		3023
773	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3024	$safe->permit_only (Opcode::opset qw(
		3025	:base_core :base_mem :base_orig :base_math
		3026	grepstart grepwhile mapstart mapwhile
		3027	sort time
		3028	));
774		3029
775	# here we export the classes and methods available to script code	3030	# here we export the classes and methods available to script code
776		3031
		3032	=pod
		3033
		3034	The following functions and methods are available within a safe environment:
		3035
		3036	cf::object
		3037	contr pay_amount pay_player map x y force_find force_add destroy
		3038	insert remove name archname title slaying race decrease split
		3039
		3040	cf::object::player
		3041	player
		3042
		3043	cf::player
		3044	peaceful
		3045
		3046	cf::map
		3047	trigger
		3048
		3049	=cut
		3050
777	for (	3051	for (
778	["cf::object" => qw(contr pay_amount pay_player)],	3052	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3053	insert remove inv nrof name archname title slaying race
		3054	decrease split destroy change_exp)],
779	["cf::object::player" => qw(player)],	3055	["cf::object::player" => qw(player)],
780	["cf::player" => qw(peaceful)],	3056	["cf::player" => qw(peaceful)],
		3057	["cf::map" => qw(trigger)],
781	) {	3058	) {
782	no strict 'refs';	3059	no strict 'refs';
783	my ($pkg, @funs) = @$_;	3060	my ($pkg, @funs) = @$_;
784	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3061	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
785	for @funs;	3062	for @funs;
786	}	3063	}
		3064
		3065	=over 4
		3066
		3067	=item @retval = safe_eval $code, [var => value, ...]
		3068
		3069	Compiled and executes the given perl code snippet. additional var/value
		3070	pairs result in temporary local (my) scalar variables of the given name
		3071	that are available in the code snippet. Example:
		3072
		3073	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3074
		3075	=cut
787		3076
788	sub safe_eval($;@) {	3077	sub safe_eval($;@) {
789	my ($code, %vars) = @_;	3078	my ($code, %vars) = @_;
790		3079
791	my $qcode = $code;	3080	my $qcode = $code;
…		…
814	}	3103	}
815		3104
816	wantarray ? @res : $res[0]	3105	wantarray ? @res : $res[0]
817	}	3106	}
818		3107
		3108	=item cf::register_script_function $function => $cb
		3109
		3110	Register a function that can be called from within map/npc scripts. The
		3111	function should be reasonably secure and should be put into a package name
		3112	like the extension.
		3113
		3114	Example: register a function that gets called whenever a map script calls
		3115	C<rent::overview>, as used by the C<rent> extension.
		3116
		3117	cf::register_script_function "rent::overview" => sub {
		3118	...
		3119	};
		3120
		3121	=cut
		3122
819	sub register_script_function {	3123	sub register_script_function {
820	my ($fun, $cb) = @_;	3124	my ($fun, $cb) = @_;
821		3125
822	no strict 'refs';	3126	no strict 'refs';
823	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3127	*{"safe::$fun"} = $safe_hole->wrap ($cb);
824	}	3128	}
825		3129
		3130	=back
		3131
		3132	=cut
		3133
826	#############################################################################	3134	#############################################################################
827	# the server's main()	3135	# the server's init and main functions
		3136
		3137	sub load_facedata($) {
		3138	my ($path) = @_;
		3139
		3140	# HACK to clear player env face cache, we need some signal framework
		3141	# for this (global event?)
		3142	%ext::player_env::MUSIC_FACE_CACHE = ();
		3143
		3144	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3145
		3146	warn "loading facedata from $path\n";
		3147
		3148	my $facedata;
		3149	0 < aio_load $path, $facedata
		3150	or die "$path: $!";
		3151
		3152	$facedata = Coro::Storable::thaw $facedata;
		3153
		3154	$facedata->{version} == 2
		3155	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3156
		3157	# patch in the exptable
		3158	$facedata->{resource}{"res/exp_table"} = {
		3159	type => FT_RSRC,
		3160	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3161	};
		3162	cf::cede_to_tick;
		3163
		3164	{
		3165	my $faces = $facedata->{faceinfo};
		3166
		3167	while (my ($face, $info) = each %$faces) {
		3168	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3169
		3170	cf::face::set_visibility $idx, $info->{visibility};
		3171	cf::face::set_magicmap $idx, $info->{magicmap};
		3172	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3173	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
		3174
		3175	cf::cede_to_tick;
		3176	}
		3177
		3178	while (my ($face, $info) = each %$faces) {
		3179	next unless $info->{smooth};
		3180
		3181	my $idx = cf::face::find $face
		3182	or next;
		3183
		3184	if (my $smooth = cf::face::find $info->{smooth}) {
		3185	cf::face::set_smooth $idx, $smooth;
		3186	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3187	} else {
		3188	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3189	}
		3190
		3191	cf::cede_to_tick;
		3192	}
		3193	}
		3194
		3195	{
		3196	my $anims = $facedata->{animinfo};
		3197
		3198	while (my ($anim, $info) = each %$anims) {
		3199	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3200	cf::cede_to_tick;
		3201	}
		3202
		3203	cf::anim::invalidate_all; # d'oh
		3204	}
		3205
		3206	{
		3207	# TODO: for gcfclient pleasure, we should give resources
		3208	# that gcfclient doesn't grok a >10000 face index.
		3209	my $res = $facedata->{resource};
		3210
		3211	while (my ($name, $info) = each %$res) {
		3212	if (defined $info->{type}) {
		3213	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3214	my $data;
		3215
		3216	if ($info->{type} & 1) {
		3217	# prepend meta info
		3218
		3219	my $meta = $enc->encode ({
		3220	name => $name,
		3221	%{ $info->{meta} || {} },
		3222	});
		3223
		3224	$data = pack "(w/a*)*", $meta, $info->{data};
		3225	} else {
		3226	$data = $info->{data};
		3227	}
		3228
		3229	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3230	cf::face::set_type $idx, $info->{type};
		3231	} else {
		3232	$RESOURCE{$name} = $info;
		3233	}
		3234
		3235	cf::cede_to_tick;
		3236	}
		3237	}
		3238
		3239	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3240
		3241	1
		3242	}
		3243
		3244	cf::global->attach (on_resource_update => sub {
		3245	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3246	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3247
		3248	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3249	my $sound = $soundconf->{compat}[$_]
		3250	or next;
		3251
		3252	my $face = cf::face::find "sound/$sound->[1]";
		3253	cf::sound::set $sound->[0] => $face;
		3254	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3255	}
		3256
		3257	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3258	my $face = cf::face::find "sound/$v";
		3259	cf::sound::set $k => $face;
		3260	}
		3261	}
		3262	});
		3263
		3264	register_exticmd fx_want => sub {
		3265	my ($ns, $want) = @_;
		3266
		3267	while (my ($k, $v) = each %$want) {
		3268	$ns->fx_want ($k, $v);
		3269	}
		3270	};
		3271
		3272	sub load_resource_file($) {
		3273	my $guard = lock_acquire "load_resource_file";
		3274
		3275	my $status = load_resource_file_ $_[0];
		3276	get_slot 0.1, 100;
		3277	cf::arch::commit_load;
		3278
		3279	$status
		3280	}
		3281
		3282	sub reload_regions {
		3283	# HACK to clear player env face cache, we need some signal framework
		3284	# for this (global event?)
		3285	%ext::player_env::MUSIC_FACE_CACHE = ();
		3286
		3287	load_resource_file "$MAPDIR/regions"
		3288	or die "unable to load regions file\n";
		3289
		3290	for (cf::region::list) {
		3291	$_->{match} = qr/$_->{match}/
		3292	if exists $_->{match};
		3293	}
		3294	}
		3295
		3296	sub reload_facedata {
		3297	load_facedata "$DATADIR/facedata"
		3298	or die "unable to load facedata\n";
		3299	}
		3300
		3301	sub reload_archetypes {
		3302	load_resource_file "$DATADIR/archetypes"
		3303	or die "unable to load archetypes\n";
		3304	}
		3305
		3306	sub reload_treasures {
		3307	load_resource_file "$DATADIR/treasures"
		3308	or die "unable to load treasurelists\n";
		3309	}
		3310
		3311	sub reload_resources {
		3312	warn "reloading resource files...\n";
		3313
		3314	reload_facedata;
		3315	reload_archetypes;
		3316	reload_regions;
		3317	reload_treasures;
		3318
		3319	warn "finished reloading resource files\n";
		3320	}
		3321
		3322	sub reload_config {
		3323	open my $fh, "<:utf8", "$CONFDIR/config"
		3324	or return;
		3325
		3326	local $/;
		3327	*CFG = YAML::Load <$fh>;
		3328
		3329	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3330
		3331	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3332	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3333
		3334	if (exists $CFG{mlockall}) {
		3335	eval {
		3336	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3337	and die "WARNING: m(un)lockall failed: $!\n";
		3338	};
		3339	warn $@ if $@;
		3340	}
		3341	}
		3342
		3343	sub pidfile() {
		3344	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3345	or die "$PIDFILE: $!";
		3346	flock $fh, &Fcntl::LOCK_EX
		3347	or die "$PIDFILE: flock: $!";
		3348	$fh
		3349	}
		3350
		3351	# make sure only one server instance is running at any one time
		3352	sub atomic {
		3353	my $fh = pidfile;
		3354
		3355	my $pid = <$fh>;
		3356	kill 9, $pid if $pid > 0;
		3357
		3358	seek $fh, 0, 0;
		3359	print $fh $$;
		3360	}
828		3361
829	sub main {	3362	sub main {
		3363	cf::init_globals; # initialise logging
		3364
		3365	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3366	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3367	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3368	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3369
		3370	cf::init_experience;
		3371	cf::init_anim;
		3372	cf::init_attackmess;
		3373	cf::init_dynamic;
		3374
		3375	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3376
		3377	# we must not ever block the main coroutine
		3378	local $Coro::idle = sub {
		3379	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3380	(async {
		3381	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3382	EV::loop EV::LOOP_ONESHOT;
		3383	})->prio (Coro::PRIO_MAX);
		3384	};
		3385
		3386	evthread_start IO::AIO::poll_fileno;
		3387
		3388	cf::sync_job {
		3389	reload_resources;
		3390	reload_config;
		3391	db_init;
		3392
		3393	cf::load_settings;
		3394	cf::load_materials;
		3395	cf::init_uuid;
		3396	cf::init_signals;
		3397	cf::init_commands;
		3398	cf::init_skills;
		3399
		3400	cf::init_beforeplay;
		3401
		3402	atomic;
		3403
		3404	load_extensions;
		3405
		3406	utime time, time, $RUNTIMEFILE;
		3407
		3408	# no (long-running) fork's whatsoever before this point(!)
		3409	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3410
		3411	(pop @POST_INIT)->(0) while @POST_INIT;
		3412	};
		3413
830	Event::loop;	3414	EV::loop;
831	}	3415	}
832		3416
833	#############################################################################	3417	#############################################################################
834	# initialisation	3418	# initialisation and cleanup
835		3419
836	register "<global>", __PACKAGE__;	3420	# install some emergency cleanup handlers
		3421	BEGIN {
		3422	our %SIGWATCHER = ();
		3423	for my $signal (qw(INT HUP TERM)) {
		3424	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3425	cf::cleanup "SIG$signal";
		3426	};
		3427	}
		3428	}
		3429
		3430	sub write_runtime_sync {
		3431	# first touch the runtime file to show we are still running:
		3432	# the fsync below can take a very very long time.
		3433
		3434	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3435
		3436	my $guard = cf::lock_acquire "write_runtime";
		3437
		3438	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3439	or return;
		3440
		3441	my $value = $cf::RUNTIME + 90 + 10;
		3442	# 10 is the runtime save interval, for a monotonic clock
		3443	# 60 allows for the watchdog to kill the server.
		3444
		3445	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3446	and return;
		3447
		3448	# always fsync - this file is important
		3449	aio_fsync $fh
		3450	and return;
		3451
		3452	# touch it again to show we are up-to-date
		3453	aio_utime $fh, undef, undef;
		3454
		3455	close $fh
		3456	or return;
		3457
		3458	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3459	and return;
		3460
		3461	warn "runtime file written.\n";
		3462
		3463	1
		3464	}
		3465
		3466	our $uuid_lock;
		3467	our $uuid_skip;
		3468
		3469	sub write_uuid_sync($) {
		3470	$uuid_skip ||= $_[0];
		3471
		3472	return if $uuid_lock;
		3473	local $uuid_lock = 1;
		3474
		3475	my $uuid = "$LOCALDIR/uuid";
		3476
		3477	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3478	or return;
		3479
		3480	my $value = uuid_seq uuid_cur;
		3481
		3482	unless ($value) {
		3483	warn "cowardly refusing to write zero uuid value!\n";
		3484	return;
		3485	}
		3486
		3487	my $value = uuid_str $value + $uuid_skip;
		3488	$uuid_skip = 0;
		3489
		3490	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3491	and return;
		3492
		3493	# always fsync - this file is important
		3494	aio_fsync $fh
		3495	and return;
		3496
		3497	close $fh
		3498	or return;
		3499
		3500	aio_rename "$uuid~", $uuid
		3501	and return;
		3502
		3503	warn "uuid file written ($value).\n";
		3504
		3505	1
		3506
		3507	}
		3508
		3509	sub write_uuid($$) {
		3510	my ($skip, $sync) = @_;
		3511
		3512	$sync ? write_uuid_sync $skip
		3513	: async { write_uuid_sync $skip };
		3514	}
		3515
		3516	sub emergency_save() {
		3517	my $freeze_guard = cf::freeze_mainloop;
		3518
		3519	warn "emergency_perl_save: enter\n";
		3520
		3521	cf::sync_job {
		3522	# this is a trade-off: we want to be very quick here, so
		3523	# save all maps without fsync, and later call a global sync
		3524	# (which in turn might be very very slow)
		3525	local $USE_FSYNC = 0;
		3526
		3527	# use a peculiar iteration method to avoid tripping on perl
		3528	# refcount bugs in for. also avoids problems with players
		3529	# and maps saved/destroyed asynchronously.
		3530	warn "emergency_perl_save: begin player save\n";
		3531	for my $login (keys %cf::PLAYER) {
		3532	my $pl = $cf::PLAYER{$login} or next;
		3533	$pl->valid or next;
		3534	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3535	$pl->save;
		3536	}
		3537	warn "emergency_perl_save: end player save\n";
		3538
		3539	warn "emergency_perl_save: begin map save\n";
		3540	for my $path (keys %cf::MAP) {
		3541	my $map = $cf::MAP{$path} or next;
		3542	$map->valid or next;
		3543	$map->save;
		3544	}
		3545	warn "emergency_perl_save: end map save\n";
		3546
		3547	warn "emergency_perl_save: begin database checkpoint\n";
		3548	BDB::db_env_txn_checkpoint $DB_ENV;
		3549	warn "emergency_perl_save: end database checkpoint\n";
		3550
		3551	warn "emergency_perl_save: begin write uuid\n";
		3552	write_uuid_sync 1;
		3553	warn "emergency_perl_save: end write uuid\n";
		3554	};
		3555
		3556	warn "emergency_perl_save: starting sync()\n";
		3557	IO::AIO::aio_sync sub {
		3558	warn "emergency_perl_save: finished sync()\n";
		3559	};
		3560
		3561	warn "emergency_perl_save: leave\n";
		3562	}
		3563
		3564	sub post_cleanup {
		3565	my ($make_core) = @_;
		3566
		3567	warn Carp::longmess "post_cleanup backtrace"
		3568	if $make_core;
		3569
		3570	my $fh = pidfile;
		3571	unlink $PIDFILE if <$fh> == $$;
		3572	}
		3573
		3574	# a safer delete_package, copied from Symbol
		3575	sub clear_package($) {
		3576	my $pkg = shift;
		3577
		3578	# expand to full symbol table name if needed
		3579	unless ($pkg =~ /^main::.*::$/) {
		3580	$pkg = "main$pkg" if $pkg =~ /^::/;
		3581	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3582	$pkg .= '::' unless $pkg =~ /::$/;
		3583	}
		3584
		3585	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3586	my $stem_symtab = *{$stem}{HASH};
		3587
		3588	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3589	or return;
		3590
		3591	# clear all symbols
		3592	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3593	for my $name (keys %$leaf_symtab) {
		3594	_gv_clear *{"$pkg$name"};
		3595	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3596	}
		3597	warn "cleared package $pkg\n";#d#
		3598	}
		3599
		3600	sub do_reload_perl() {
		3601	# can/must only be called in main
		3602	if ($Coro::current != $Coro::main) {
		3603	warn "can only reload from main coroutine";
		3604	return;
		3605	}
		3606
		3607	return if $RELOAD++;
		3608
		3609	my $t1 = EV::time;
		3610
		3611	while ($RELOAD) {
		3612	warn "reloading...";
		3613
		3614	warn "entering sync_job";
		3615
		3616	cf::sync_job {
		3617	cf::write_runtime_sync; # external watchdog should not bark
		3618	cf::emergency_save;
		3619	cf::write_runtime_sync; # external watchdog should not bark
		3620
		3621	warn "syncing database to disk";
		3622	BDB::db_env_txn_checkpoint $DB_ENV;
		3623
		3624	# if anything goes wrong in here, we should simply crash as we already saved
		3625
		3626	warn "flushing outstanding aio requests";
		3627	while (IO::AIO::nreqs || BDB::nreqs) {
		3628	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3629	}
		3630
		3631	warn "cancelling all extension coros";
		3632	$_->cancel for values %EXT_CORO;
		3633	%EXT_CORO = ();
		3634
		3635	warn "removing commands";
		3636	%COMMAND = ();
		3637
		3638	warn "removing ext/exti commands";
		3639	%EXTCMD = ();
		3640	%EXTICMD = ();
		3641
		3642	warn "unloading/nuking all extensions";
		3643	for my $pkg (@EXTS) {
		3644	warn "... unloading $pkg";
		3645
		3646	if (my $cb = $pkg->can ("unload")) {
		3647	eval {
		3648	$cb->($pkg);
		3649	1
		3650	} or warn "$pkg unloaded, but with errors: $@";
		3651	}
		3652
		3653	warn "... clearing $pkg";
		3654	clear_package $pkg;
		3655	}
		3656
		3657	warn "unloading all perl modules loaded from $LIBDIR";
		3658	while (my ($k, $v) = each %INC) {
		3659	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3660
		3661	warn "... unloading $k";
		3662	delete $INC{$k};
		3663
		3664	$k =~ s/\.pm$//;
		3665	$k =~ s/\//::/g;
		3666
		3667	if (my $cb = $k->can ("unload_module")) {
		3668	$cb->();
		3669	}
		3670
		3671	clear_package $k;
		3672	}
		3673
		3674	warn "getting rid of safe::, as good as possible";
		3675	clear_package "safe::$_"
		3676	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3677
		3678	warn "unloading cf.pm \"a bit\"";
		3679	delete $INC{"cf.pm"};
		3680	delete $INC{"cf/pod.pm"};
		3681
		3682	# don't, removes xs symbols, too,
		3683	# and global variables created in xs
		3684	#clear_package __PACKAGE__;
		3685
		3686	warn "unload completed, starting to reload now";
		3687
		3688	warn "reloading cf.pm";
		3689	require cf;
		3690	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3691
		3692	warn "loading config and database again";
		3693	cf::reload_config;
		3694
		3695	warn "loading extensions";
		3696	cf::load_extensions;
		3697
		3698	if ($REATTACH_ON_RELOAD) {
		3699	warn "reattaching attachments to objects/players";
		3700	_global_reattach; # objects, sockets
		3701	warn "reattaching attachments to maps";
		3702	reattach $_ for values %MAP;
		3703	warn "reattaching attachments to players";
		3704	reattach $_ for values %PLAYER;
		3705	}
		3706
		3707	warn "running post_init jobs";
		3708	(pop @POST_INIT)->(1) while @POST_INIT;
		3709
		3710	warn "leaving sync_job";
		3711
		3712	1
		3713	} or do {
		3714	warn $@;
		3715	cf::cleanup "error while reloading, exiting.";
		3716	};
		3717
		3718	warn "reloaded";
		3719	--$RELOAD;
		3720	}
		3721
		3722	$t1 = EV::time - $t1;
		3723	warn "reload completed in ${t1}s\n";
		3724	};
		3725
		3726	our $RELOAD_WATCHER; # used only during reload
		3727
		3728	sub reload_perl() {
		3729	# doing reload synchronously and two reloads happen back-to-back,
		3730	# coro crashes during coro_state_free->destroy here.
		3731
		3732	$RELOAD_WATCHER ||= cf::async {
		3733	Coro::AIO::aio_wait cache_extensions;
		3734
		3735	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
		3736	do_reload_perl;
		3737	undef $RELOAD_WATCHER;
		3738	};
		3739	};
		3740	}
		3741
		3742	register_command "reload" => sub {
		3743	my ($who, $arg) = @_;
		3744
		3745	if ($who->flag (FLAG_WIZ)) {
		3746	$who->message ("reloading server.");
		3747	async {
		3748	$Coro::current->{desc} = "perl_reload";
		3749	reload_perl;
		3750	};
		3751	}
		3752	};
837		3753
838	unshift @INC, $LIBDIR;	3754	unshift @INC, $LIBDIR;
839		3755
840	load_extensions;	3756	my $bug_warning = 0;
841		3757
842	$TICK_WATCHER = Event->timer (	3758	our @WAIT_FOR_TICK;
843	prio => 1,	3759	our @WAIT_FOR_TICK_BEGIN;
844	at => $NEXT_TICK || 1,	3760
845	cb => sub {	3761	sub wait_for_tick {
		3762	return if tick_inhibit || $Coro::current == $Coro::main;
		3763
		3764	my $signal = new Coro::Signal;
		3765	push @WAIT_FOR_TICK, $signal;
		3766	$signal->wait;
		3767	}
		3768
		3769	sub wait_for_tick_begin {
		3770	return if tick_inhibit || $Coro::current == $Coro::main;
		3771
		3772	my $signal = new Coro::Signal;
		3773	push @WAIT_FOR_TICK_BEGIN, $signal;
		3774	$signal->wait;
		3775	}
		3776
		3777	sub tick {
		3778	if ($Coro::current != $Coro::main) {
		3779	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3780	unless ++$bug_warning > 10;
		3781	return;
		3782	}
		3783
846	cf::server_tick; # one server iteration	3784	cf::server_tick; # one server iteration
847		3785
848	my $NOW = Event::time;	3786	if ($NOW >= $NEXT_RUNTIME_WRITE) {
849	$NEXT_TICK += $TICK;	3787	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
850		3788	Coro::async_pool {
851	# if we are delayed by four ticks, skip them all	3789	$Coro::current->{desc} = "runtime saver";
852	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3790	write_runtime_sync
853		3791	or warn "ERROR: unable to write runtime file: $!";
854	$TICK_WATCHER->at ($NEXT_TICK);	3792	};
855	$TICK_WATCHER->start;
856	},	3793	}
857	);
858		3794
859	_reload_2;	3795	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3796	$sig->send;
		3797	}
		3798	while (my $sig = shift @WAIT_FOR_TICK) {
		3799	$sig->send;
		3800	}
		3801
		3802	$LOAD = ($NOW - $TICK_START) / $TICK;
		3803	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3804
		3805	if (0) {
		3806	if ($NEXT_TICK) {
		3807	my $jitter = $TICK_START - $NEXT_TICK;
		3808	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3809	warn "jitter $JITTER\n";#d#
		3810	}
		3811	}
		3812	}
		3813
		3814	{
		3815	# configure BDB
		3816
		3817	BDB::min_parallel 8;
		3818	BDB::max_poll_reqs $TICK * 0.1;
		3819	$AnyEvent::BDB::WATCHER->priority (1);
		3820
		3821	unless ($DB_ENV) {
		3822	$DB_ENV = BDB::db_env_create;
		3823	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3824	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3825	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3826	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3827	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		3828
		3829	cf::sync_job {
		3830	eval {
		3831	BDB::db_env_open
		3832	$DB_ENV,
		3833	$BDBDIR,
		3834	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3835	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3836	0666;
		3837
		3838	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3839	};
		3840
		3841	cf::cleanup "db_env_open(db): $@" if $@;
		3842	};
		3843	}
		3844
		3845	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		3846	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		3847	};
		3848	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		3849	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3850	};
		3851	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3852	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3853	};
		3854	}
		3855
		3856	{
		3857	# configure IO::AIO
		3858
		3859	IO::AIO::min_parallel 8;
		3860	IO::AIO::max_poll_time $TICK * 0.1;
		3861	undef $AnyEvent::AIO::WATCHER;
		3862	}
		3863
		3864	my $_log_backtrace;
		3865
		3866	sub _log_backtrace {
		3867	my ($msg, @addr) = @_;
		3868
		3869	$msg =~ s/\n//;
		3870
		3871	# limit the # of concurrent backtraces
		3872	if ($_log_backtrace < 2) {
		3873	++$_log_backtrace;
		3874	my $perl_bt = Carp::longmess $msg;
		3875	async {
		3876	$Coro::current->{desc} = "abt $msg";
		3877
		3878	my @bt = fork_call {
		3879	@addr = map { sprintf "%x", $_ } @addr;
		3880	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3881	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3882	or die "addr2line: $!";
		3883
		3884	my @funcs;
		3885	my @res = <$fh>;
		3886	chomp for @res;
		3887	while (@res) {
		3888	my ($func, $line) = splice @res, 0, 2, ();
		3889	push @funcs, "[$func] $line";
		3890	}
		3891
		3892	@funcs
		3893	};
		3894
		3895	LOG llevInfo, "[ABT] $perl_bt\n";
		3896	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3897	LOG llevInfo, "[ABT] $_\n" for @bt;
		3898	--$_log_backtrace;
		3899	};
		3900	} else {
		3901	LOG llevInfo, "[ABT] $msg\n";
		3902	LOG llevInfo, "[ABT] [suppressed]\n";
		3903	}
		3904	}
		3905
		3906	# load additional modules
		3907	use cf::pod;
		3908
		3909	END { cf::emergency_save }
860		3910
861	1	3911	1
862		3912

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