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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.70 by root, Sun Oct 1 10:55:37 2006 UTC vs.
Revision 1.447 by root, Fri Sep 19 01:39:45 2008 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify
		7	# it under the terms of the GNU General Public License as published by
		8	# the Free Software Foundation, either version 3 of the License, or
		9	# (at your option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the GNU General Public License
		17	# along with this program. If not, see <http://www.gnu.org/licenses/>.
		18	#
		19	# The authors can be reached via e-mail to <support@deliantra.net>
		20	#
		21
1	package cf;	22	package cf;
		23
		24	use 5.10.0;
		25	use utf8;
		26	use strict "vars", "subs";
2		27
3	use Symbol;	28	use Symbol;
4	use List::Util;	29	use List::Util;
5	use Storable;	30	use Socket;
		31	use EV;
6	use Opcode;	32	use Opcode;
7	use Safe;	33	use Safe;
8	use Safe::Hole;	34	use Safe::Hole;
		35	use Storable ();
9		36
		37	use Coro ();
		38	use Coro::State;
		39	use Coro::Handle;
		40	use Coro::EV;
		41	use Coro::AnyEvent;
		42	use Coro::Timer;
		43	use Coro::Signal;
		44	use Coro::Semaphore;
		45	use Coro::AnyEvent;
		46	use Coro::AIO;
		47	use Coro::BDB 1.6;
		48	use Coro::Storable;
		49	use Coro::Util ();
		50
		51	use JSON::XS 2.01 ();
		52	use BDB ();
		53	use Data::Dumper;
		54	use Digest::MD5;
		55	use Fcntl;
		56	use YAML ();
		57	use IO::AIO ();
10	use Time::HiRes;	58	use Time::HiRes;
11	use Event;	59	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	60	use Digest::MD5 ();
13		61
14	use strict;	62	AnyEvent::detect;
15		63
16	_init_vars;	64	# configure various modules to our taste
		65	#
		66	$Storable::canonical = 1; # reduce rsync transfers
		67	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		68	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
17		69
		70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		73
18	our %COMMAND = ();	74	our %COMMAND = ();
		75	our %COMMAND_TIME = ();
		76
		77	our @EXTS = (); # list of extension package names
		78	our %EXTCMD = ();
		79	our %EXTICMD = ();
		80	our %EXT_CORO = (); # coroutines bound to extensions
		81	our %EXT_MAP = (); # pluggable maps
		82
		83	our $RELOAD; # number of reloads so far
19	our @EVENT;	84	our @EVENT;
20	our $LIBDIR = maps_directory "perl";
21		85
22	our $TICK = MAX_TIME * 1e-6;	86	our $CONFDIR = confdir;
23	our $TICK_WATCHER;	87	our $DATADIR = datadir;
		88	our $LIBDIR = "$DATADIR/ext";
		89	our $PODDIR = "$DATADIR/pod";
		90	our $MAPDIR = "$DATADIR/" . mapdir;
		91	our $LOCALDIR = localdir;
		92	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		93	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		94	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		95	our $RANDOMDIR = "$LOCALDIR/random";
		96	our $BDBDIR = "$LOCALDIR/db";
		97	our $PIDFILE = "$LOCALDIR/pid";
		98	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		99
		100	our %RESOURCE;
		101
		102	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		103	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
24	our $NEXT_TICK;	104	our $NEXT_TICK;
		105	our $USE_FSYNC = 1; # use fsync to write maps - default off
		106
		107	our $BDB_DEADLOCK_WATCHER;
		108	our $BDB_CHECKPOINT_WATCHER;
		109	our $BDB_TRICKLE_WATCHER;
		110	our $DB_ENV;
25		111
26	our %CFG;	112	our %CFG;
27		113
		114	our $UPTIME; $UPTIME ||= time;
		115	our $RUNTIME;
		116	our $NOW;
		117
		118	our (%PLAYER, %PLAYER_LOADING); # all users
		119	our (%MAP, %MAP_LOADING ); # all maps
		120	our $LINK_MAP; # the special {link} map, which is always available
		121
		122	# used to convert map paths into valid unix filenames by replacing / by ∕
		123	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		124
		125	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		126	our $LOADAVG; # same thing, but with alpha-smoothing
		127	our $JITTER; # average jitter
		128	our $TICK_START; # for load detecting purposes
		129
		130	binmode STDOUT;
		131	binmode STDERR;
		132
		133	# read virtual server time, if available
		134	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		135	open my $fh, "<", $RUNTIMEFILE
		136	or die "unable to read $RUNTIMEFILE file: $!";
		137	$RUNTIME = <$fh> + 0.;
		138	}
		139
		140	mkdir $_
		141	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		142
		143	our $EMERGENCY_POSITION;
		144
		145	sub cf::map::normalise;
		146
28	#############################################################################	147	#############################################################################
29		148
30	=head2 GLOBAL VARIABLES	149	=head2 GLOBAL VARIABLES
31		150
32	=over 4	151	=over 4
33		152
34	=item $cf::LIBDIR	153	=item $cf::UPTIME
35		154
36	The perl library directory, where extensions and cf-specific modules can	155	The timestamp of the server start (so not actually an uptime).
37	be found. It will be added to C<@INC> automatically.	156
		157	=item $cf::RUNTIME
		158
		159	The time this server has run, starts at 0 and is increased by $cf::TICK on
		160	every server tick.
		161
		162	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		163	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		164	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		165
		166	Various directories - "/etc", read-only install directory, perl-library
		167	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		168	unique-items directory, player file directory, random maps directory and
		169	database environment.
		170
		171	=item $cf::NOW
		172
		173	The time of the last (current) server tick.
38		174
39	=item $cf::TICK	175	=item $cf::TICK
40		176
41	The interval between server ticks, in seconds.	177	The interval between server ticks, in seconds.
42		178
		179	=item $cf::LOADAVG
		180
		181	The current CPU load on the server (alpha-smoothed), as a value between 0
		182	(none) and 1 (overloaded), indicating how much time is spent on processing
		183	objects per tick. Healthy values are < 0.5.
		184
		185	=item $cf::LOAD
		186
		187	The raw value load value from the last tick.
		188
43	=item %cf::CFG	189	=item %cf::CFG
44		190
45	Configuration for the server, loaded from C</etc/crossfire/config>, or	191	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
46	from wherever your confdir points to.	192	from wherever your confdir points to.
		193
		194	=item cf::wait_for_tick, cf::wait_for_tick_begin
		195
		196	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		197	returns directly I<after> the tick processing (and consequently, can only wake one process
		198	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		199
		200	=item @cf::INVOKE_RESULTS
		201
		202	This array contains the results of the last C<invoke ()> call. When
		203	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		204	that call.
47		205
48	=back	206	=back
49		207
50	=cut	208	=cut
51		209
52	BEGIN {	210	BEGIN {
53	*CORE::GLOBAL::warn = sub {	211	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	212	my $msg = join "", @_;
		213
55	$msg .= "\n"	214	$msg .= "\n"
56	unless $msg =~ /\n$/;	215	unless $msg =~ /\n$/;
57		216
58	print STDERR "cfperl: $msg";	217	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		218
59	LOG llevError, "cfperl: $msg";	219	LOG llevError, $msg;
60	};	220	};
61	}	221	}
62		222
		223	$Coro::State::DIEHOOK = sub {
		224	return unless $^S eq 0; # "eq", not "=="
		225
		226	if ($Coro::current == $Coro::main) {#d#
		227	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		228	return;#d#
		229	}#d#
		230
		231	# kill coroutine otherwise
		232	warn Carp::longmess $_[0];
		233	Coro::terminate
		234	};
		235
		236	$SIG{__DIE__} = sub { }; #d#?
		237
		238	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		239	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		240	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		241	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		242	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		243	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	244	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
64		245
65	# we bless all objects into (empty) derived classes to force a method lookup	246	# we bless all objects into (empty) derived classes to force a method lookup
66	# within the Safe compartment.	247	# within the Safe compartment.
67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	248	for my $pkg (qw(
68	no strict 'refs';	249	cf::global cf::attachable
		250	cf::object cf::object::player
		251	cf::client cf::player
		252	cf::arch cf::living
		253	cf::map cf::mapspace
		254	cf::party cf::region
		255	)) {
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	256	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	257	}
71		258
72	$Event::DIED = sub {	259	$EV::DIED = sub {
73	warn "error in event callback: @_";	260	warn "error in event callback: @_";
74	};	261	};
75		262
76	my %ext_pkg;	263	#############################################################################
77	my @exts;
78	my @hook;
79	my %command;
80	my %extcmd;
81		264
82	=head2 UTILITY FUNCTIONS	265	=head2 UTILITY FUNCTIONS
83		266
84	=over 4	267	=over 4
85		268
86	=cut	269	=item dumpval $ref
87		270
88	use JSON::Syck (); # TODO# replace by JSON::PC once working	271	=cut
89		272
		273	sub dumpval {
		274	eval {
		275	local $SIG{__DIE__};
		276	my $d;
		277	if (1) {
		278	$d = new Data::Dumper([$_[0]], ["*var"]);
		279	$d->Terse(1);
		280	$d->Indent(2);
		281	$d->Quotekeys(0);
		282	$d->Useqq(1);
		283	#$d->Bless(...);
		284	$d->Seen($_[1]) if @_ > 1;
		285	$d = $d->Dump();
		286	}
		287	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		288	$d
		289	} || "[unable to dump $_[0]: '$@']";
		290	}
		291
90	=item $ref = cf::from_json $json	292	=item $ref = cf::decode_json $json
91		293
92	Converts a JSON string into the corresponding perl data structure.	294	Converts a JSON string into the corresponding perl data structure.
93		295
94	=cut
95
96	sub from_json($) {
97	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
98	JSON::Syck::Load $_[0]
99	}
100
101	=item $json = cf::to_json $ref	296	=item $json = cf::encode_json $ref
102		297
103	Converts a perl data structure into its JSON representation.	298	Converts a perl data structure into its JSON representation.
104		299
105	=cut	300	=cut
106		301
107	sub to_json($) {	302	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	303
109	JSON::Syck::Dump $_[0]	304	sub encode_json($) { $json_coder->encode ($_[0]) }
		305	sub decode_json($) { $json_coder->decode ($_[0]) }
		306
		307	=item cf::lock_wait $string
		308
		309	Wait until the given lock is available. See cf::lock_acquire.
		310
		311	=item my $lock = cf::lock_acquire $string
		312
		313	Wait until the given lock is available and then acquires it and returns
		314	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		315	for example when the coroutine gets canceled), the lock is automatically
		316	returned.
		317
		318	Locks are *not* recursive, locking from the same coro twice results in a
		319	deadlocked coro.
		320
		321	Lock names should begin with a unique identifier (for example, cf::map::find
		322	uses map_find and cf::map::load uses map_load).
		323
		324	=item $locked = cf::lock_active $string
		325
		326	Return true if the lock is currently active, i.e. somebody has locked it.
		327
		328	=cut
		329
		330	our %LOCK;
		331	our %LOCKER;#d#
		332
		333	sub lock_wait($) {
		334	my ($key) = @_;
		335
		336	if ($LOCKER{$key} == $Coro::current) {#d#
		337	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		338	return;#d#
		339	}#d#
		340
		341	# wait for lock, if any
		342	while ($LOCK{$key}) {
		343	push @{ $LOCK{$key} }, $Coro::current;
		344	Coro::schedule;
		345	}
		346	}
		347
		348	sub lock_acquire($) {
		349	my ($key) = @_;
		350
		351	# wait, to be sure we are not locked
		352	lock_wait $key;
		353
		354	$LOCK{$key} = [];
		355	$LOCKER{$key} = $Coro::current;#d#
		356
		357	Coro::guard {
		358	delete $LOCKER{$key};#d#
		359	# wake up all waiters, to be on the safe side
		360	$_->ready for @{ delete $LOCK{$key} };
		361	}
		362	}
		363
		364	sub lock_active($) {
		365	my ($key) = @_;
		366
		367	! ! $LOCK{$key}
		368	}
		369
		370	sub freeze_mainloop {
		371	tick_inhibit_inc;
		372
		373	Coro::guard \&tick_inhibit_dec;
		374	}
		375
		376	=item cf::periodic $interval, $cb
		377
		378	Like EV::periodic, but randomly selects a starting point so that the actions
		379	get spread over timer.
		380
		381	=cut
		382
		383	sub periodic($$) {
		384	my ($interval, $cb) = @_;
		385
		386	my $start = rand List::Util::min 180, $interval;
		387
		388	EV::periodic $start, $interval, 0, $cb
		389	}
		390
		391	=item cf::get_slot $time[, $priority[, $name]]
		392
		393	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		394	This call blocks and returns only when you have at least C<$time> seconds
		395	of cpu time till the next tick. The slot is only valid till the next cede.
		396
		397	The optional C<$name> can be used to identify the job to run. It might be
		398	used for statistical purposes and should identify the same time-class.
		399
		400	Useful for short background jobs.
		401
		402	=cut
		403
		404	our @SLOT_QUEUE;
		405	our $SLOT_QUEUE;
		406
		407	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		408	$SLOT_QUEUE = Coro::async {
		409	$Coro::current->desc ("timeslot manager");
		410
		411	my $signal = new Coro::Signal;
		412
		413	while () {
		414	next_job:
		415	my $avail = cf::till_tick;
		416	if ($avail > 0.01) {
		417	for (0 .. $#SLOT_QUEUE) {
		418	if ($SLOT_QUEUE[$_][0] < $avail) {
		419	my $job = splice @SLOT_QUEUE, $_, 1, ();
		420	$job->[2]->send;
		421	Coro::cede;
		422	goto next_job;
		423	}
		424	}
		425	}
		426
		427	if (@SLOT_QUEUE) {
		428	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		429	push @cf::WAIT_FOR_TICK, $signal;
		430	$signal->wait;
		431	} else {
		432	Coro::schedule;
		433	}
		434	}
		435	};
		436
		437	sub get_slot($;$$) {
		438	return if tick_inhibit || $Coro::current == $Coro::main;
		439
		440	my ($time, $pri, $name) = @_;
		441
		442	$time = $TICK * .6 if $time > $TICK * .6;
		443	my $sig = new Coro::Signal;
		444
		445	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		446	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		447	$SLOT_QUEUE->ready;
		448	$sig->wait;
		449	}
		450
		451	=item cf::async { BLOCK }
		452
		453	Currently the same as Coro::async_pool, meaning you cannot use
		454	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		455	thing you are allowed to do is call C<prio> on it.
		456
		457	=cut
		458
		459	BEGIN { *async = \&Coro::async_pool }
		460
		461	=item cf::sync_job { BLOCK }
		462
		463	The design of Deliantra requires that the main coroutine ($Coro::main)
		464	is always able to handle events or runnable, as Deliantra is only
		465	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		466	acceptable.
		467
		468	If it must be done, put the blocking parts into C<sync_job>. This will run
		469	the given BLOCK in another coroutine while waiting for the result. The
		470	server will be frozen during this time, so the block should either finish
		471	fast or be very important.
		472
		473	=cut
		474
		475	sub sync_job(&) {
		476	my ($job) = @_;
		477
		478	if ($Coro::current == $Coro::main) {
		479	my $time = EV::time;
		480
		481	# this is the main coro, too bad, we have to block
		482	# till the operation succeeds, freezing the server :/
		483
		484	LOG llevError, Carp::longmess "sync job";#d#
		485
		486	my $freeze_guard = freeze_mainloop;
		487
		488	my $busy = 1;
		489	my @res;
		490
		491	(async {
		492	$Coro::current->desc ("sync job coro");
		493	@res = eval { $job->() };
		494	warn $@ if $@;
		495	undef $busy;
		496	})->prio (Coro::PRIO_MAX);
		497
		498	while ($busy) {
		499	if (Coro::nready) {
		500	Coro::cede_notself;
		501	} else {
		502	EV::loop EV::LOOP_ONESHOT;
		503	}
		504	}
		505
		506	my $time = EV::time - $time;
		507
		508	$TICK_START += $time; # do not account sync jobs to server load
		509
		510	wantarray ? @res : $res[0]
		511	} else {
		512	# we are in another coroutine, how wonderful, everything just works
		513
		514	$job->()
		515	}
		516	}
		517
		518	=item $coro = cf::async_ext { BLOCK }
		519
		520	Like async, but this coro is automatically being canceled when the
		521	extension calling this is being unloaded.
		522
		523	=cut
		524
		525	sub async_ext(&) {
		526	my $cb = shift;
		527
		528	my $coro = &Coro::async ($cb);
		529
		530	$coro->on_destroy (sub {
		531	delete $EXT_CORO{$coro+0};
		532	});
		533	$EXT_CORO{$coro+0} = $coro;
		534
		535	$coro
		536	}
		537
		538	=item fork_call { }, $args
		539
		540	Executes the given code block with the given arguments in a seperate
		541	process, returning the results. Everything must be serialisable with
		542	Coro::Storable. May, of course, block. Note that the executed sub may
		543	never block itself or use any form of event handling.
		544
		545	=cut
		546
		547	sub fork_call(&@) {
		548	my ($cb, @args) = @_;
		549
		550	# we seemingly have to make a local copy of the whole thing,
		551	# otherwise perl prematurely frees the stuff :/
		552	# TODO: investigate and fix (likely this will be rather laborious)
		553
		554	my @res = Coro::Util::fork_eval {
		555	reset_signals;
		556	&$cb
		557	}, @args;
		558
		559	wantarray ? @res : $res[-1]
		560	}
		561
		562	=item $coin = coin_from_name $name
		563
		564	=cut
		565
		566	our %coin_alias = (
		567	"silver" => "silvercoin",
		568	"silvercoin" => "silvercoin",
		569	"silvercoins" => "silvercoin",
		570	"gold" => "goldcoin",
		571	"goldcoin" => "goldcoin",
		572	"goldcoins" => "goldcoin",
		573	"platinum" => "platinacoin",
		574	"platinumcoin" => "platinacoin",
		575	"platinumcoins" => "platinacoin",
		576	"platina" => "platinacoin",
		577	"platinacoin" => "platinacoin",
		578	"platinacoins" => "platinacoin",
		579	"royalty" => "royalty",
		580	"royalties" => "royalty",
		581	);
		582
		583	sub coin_from_name($) {
		584	$coin_alias{$_[0]}
		585	? cf::arch::find $coin_alias{$_[0]}
		586	: undef
		587	}
		588
		589	=item $value = cf::db_get $family => $key
		590
		591	Returns a single value from the environment database.
		592
		593	=item cf::db_put $family => $key => $value
		594
		595	Stores the given C<$value> in the family. It can currently store binary
		596	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		597
		598	=item $db = cf::db_table "name"
		599
		600	Create and/or open a new database table. The string must not be "db" and must be unique
		601	within each server.
		602
		603	=cut
		604
		605	sub db_table($) {
		606	my ($name) = @_;
		607	my $db = BDB::db_create $DB_ENV;
		608
		609	eval {
		610	$db->set_flags (BDB::CHKSUM);
		611
		612	utf8::encode $name;
		613	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		614	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		615	cf::cleanup "db_open(db): $!" if $!;
		616	};
		617	cf::cleanup "db_open(db): $@" if $@;
		618
		619	$db
		620	}
		621
		622	our $DB;
		623
		624	sub db_init {
		625	cf::sync_job {
		626	$DB ||= db_table "db";
		627	};
		628	}
		629
		630	sub db_get($$) {
		631	my $key = "$_[0]/$_[1]";
		632
		633	cf::sync_job {
		634	BDB::db_get $DB, undef, $key, my $data;
		635
		636	$! ? ()
		637	: $data
		638	}
		639	}
		640
		641	sub db_put($$$) {
		642	BDB::dbreq_pri 4;
		643	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		644	}
		645
		646	=item cf::cache $id => [$paths...], $processversion => $process
		647
		648	Generic caching function that returns the value of the resource $id,
		649	caching and regenerating as required.
		650
		651	This function can block.
		652
		653	=cut
		654
		655	sub cache {
		656	my ($id, $src, $processversion, $process) = @_;
		657
		658	my $meta =
		659	join "\x00",
		660	$processversion,
		661	map {
		662	aio_stat $_
		663	and Carp::croak "$_: $!";
		664
		665	($_, (stat _)[7,9])
		666	} @$src;
		667
		668	my $dbmeta = db_get cache => "$id/meta";
		669	if ($dbmeta ne $meta) {
		670	# changed, we may need to process
		671
		672	my @data;
		673	my $md5;
		674
		675	for (0 .. $#$src) {
		676	0 <= aio_load $src->[$_], $data[$_]
		677	or Carp::croak "$src->[$_]: $!";
		678	}
		679
		680	# if processing is expensive, check
		681	# checksum first
		682	if (1) {
		683	$md5 =
		684	join "\x00",
		685	$processversion,
		686	map {
		687	cf::cede_to_tick;
		688	($src->[$_], Digest::MD5::md5_hex $data[$_])
		689	} 0.. $#$src;
		690
		691
		692	my $dbmd5 = db_get cache => "$id/md5";
		693	if ($dbmd5 eq $md5) {
		694	db_put cache => "$id/meta", $meta;
		695
		696	return db_get cache => "$id/data";
		697	}
		698	}
		699
		700	my $t1 = Time::HiRes::time;
		701	my $data = $process->(\@data);
		702	my $t2 = Time::HiRes::time;
		703
		704	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		705
		706	db_put cache => "$id/data", $data;
		707	db_put cache => "$id/md5" , $md5;
		708	db_put cache => "$id/meta", $meta;
		709
		710	return $data;
		711	}
		712
		713	db_get cache => "$id/data"
		714	}
		715
		716	=item cf::datalog type => key => value, ...
		717
		718	Log a datalog packet of the given type with the given key-value pairs.
		719
		720	=cut
		721
		722	sub datalog($@) {
		723	my ($type, %kv) = @_;
		724	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
110	}	725	}
111		726
112	=back	727	=back
113		728
		729	=cut
		730
114	#############################################################################	731	#############################################################################
115		732
116	=head2 EVENTS AND OBJECT ATTACHMENTS	733	=head2 ATTACHABLE OBJECTS
		734
		735	Many objects in deliantra are so-called attachable objects. That means you can
		736	attach callbacks/event handlers (a collection of which is called an "attachment")
		737	to it. All such attachable objects support the following methods.
		738
		739	In the following description, CLASS can be any of C<global>, C<object>
		740	C<player>, C<client> or C<map> (i.e. the attachable objects in
		741	Deliantra).
117		742
118	=over 4	743	=over 4
119		744
120	=item $object->attach ($attachment, key => $value...)
121
122	=item $object->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to an object.
125
126	=item $player->attach ($attachment, key => $value...)
127
128	=item $player->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to a player.
131
132	=item $map->attach ($attachment, key => $value...)	745	=item $attachable->attach ($attachment, key => $value...)
133		746
134	=item $map->detach ($attachment)	747	=item $attachable->detach ($attachment)
135		748
136	Attach/detach a pre-registered attachment to a map.	749	Attach/detach a pre-registered attachment to a specific object and give it
		750	the specified key/value pairs as arguments.
137		751
138	=item $bool = $object->attached ($name)	752	Example, attach a minesweeper attachment to the given object, making it a
		753	10x10 minesweeper game:
139		754
140	=item $bool = $player->attached ($name)	755	$obj->attach (minesweeper => width => 10, height => 10);
141		756
142	=item $bool = $map->attached ($name)	757	=item $bool = $attachable->attached ($name)
143		758
144	Checks wether the named attachment is currently attached to the object.	759	Checks wether the named attachment is currently attached to the object.
145		760
146	=item cf::attach_global ...	761	=item cf::CLASS->attach ...
147		762
148	Attach handlers for global events.	763	=item cf::CLASS->detach ...
149		764
150	This and all following C<attach_*>-functions expect any number of the	765	Define an anonymous attachment and attach it to all objects of the given
151	following handler/hook descriptions:	766	CLASS. See the next function for an explanation of its arguments.
		767
		768	You can attach to global events by using the C<cf::global> class.
		769
		770	Example, log all player logins:
		771
		772	cf::player->attach (
		773	on_login => sub {
		774	my ($pl) = @_;
		775	...
		776	},
		777	);
		778
		779	Example, attach to the jeweler skill:
		780
		781	cf::object->attach (
		782	type => cf::SKILL,
		783	subtype => cf::SK_JEWELER,
		784	on_use_skill => sub {
		785	my ($sk, $ob, $part, $dir, $msg) = @_;
		786	...
		787	},
		788	);
		789
		790	=item cf::CLASS::attachment $name, ...
		791
		792	Register an attachment by C<$name> through which attachable objects of the
		793	given CLASS can refer to this attachment.
		794
		795	Some classes such as deliantra maps and objects can specify attachments
		796	that are attached at load/instantiate time, thus the need for a name.
		797
		798	These calls expect any number of the following handler/hook descriptions:
152		799
153	=over 4	800	=over 4
154		801
155	=item prio => $number	802	=item prio => $number
156		803
…		…
158	by another C<prio> setting). Lower priority handlers get executed	805	by another C<prio> setting). Lower priority handlers get executed
159	earlier. The default priority is C<0>, and many built-in handlers are	806	earlier. The default priority is C<0>, and many built-in handlers are
160	registered at priority C<-1000>, so lower priorities should not be used	807	registered at priority C<-1000>, so lower priorities should not be used
161	unless you know what you are doing.	808	unless you know what you are doing.
162		809
		810	=item type => $type
		811
		812	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		813	given type of objects only (the additional parameter C<subtype> can be
		814	used to further limit to the given subtype).
		815
163	=item on_I<event> => \&cb	816	=item on_I<event> => \&cb
164		817
165	Call the given code reference whenever the named event happens (event is	818	Call the given code reference whenever the named event happens (event is
166	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	819	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
167	handlers are recognised generally depends on the type of object these	820	handlers are recognised generally depends on the type of object these
…		…
176	package and register them. Only handlers for eevents supported by the	829	package and register them. Only handlers for eevents supported by the
177	object/class are recognised.	830	object/class are recognised.
178		831
179	=back	832	=back
180		833
181	=item cf::attach_to_type $object_type, $subtype, ...	834	Example, define an attachment called "sockpuppet" that calls the given
		835	event handler when a monster attacks:
182		836
183	Attach handlers for a specific object type (e.g. TRANSPORT) and	837	cf::object::attachment sockpuppet =>
184	subtype. If C<$subtype> is zero or undef, matches all objects of the given	838	on_skill_attack => sub {
185	type.	839	my ($self, $victim) = @_;
186		840	...
187	=item cf::attach_to_objects ...
188
189	Attach handlers to all objects. Do not use this except for debugging or
190	very rare events, as handlers are (obviously) called for I<all> objects in
191	the game.
192
193	=item cf::attach_to_players ...
194
195	Attach handlers to all players.
196
197	=item cf::attach_to_maps ...
198
199	Attach handlers to all maps.
200
201	=item cf:register_attachment $name, ...
202
203	Register an attachment by name through which objects can refer to this
204	attachment.
205
206	=item cf:register_player_attachment $name, ...
207
208	Register an attachment by name through which players can refer to this
209	attachment.
210
211	=item cf:register_map_attachment $name, ...
212
213	Register an attachment by name through which maps can refer to this
214	attachment.
215
216	=cut
217
218	# the following variables are defined in .xs and must not be re-created
219	our @CB_GLOBAL = (); # registry for all global events
220	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
221	our @CB_PLAYER = ();
222	our @CB_TYPE = (); # registry for type (cf-object class) based events
223	our @CB_MAP = ();
224
225	my %attachment;
226
227	sub _attach_cb($\%$$$) {
228	my ($registry, $undo, $event, $prio, $cb) = @_;
229
230	use sort 'stable';
231
232	$cb = [$prio, $cb];
233
234	@{$registry->[$event]} = sort
235	{ $a->[0] cmp $b->[0] }
236	@{$registry->[$event] || []}, $cb;
237
238	push @{$undo->{cb}}, [$event, $cb];
239	}
240
241	# attach handles attaching event callbacks
242	# the only thing the caller has to do is pass the correct
243	# registry (== where the callback attaches to).
244	sub _attach(\@$@) {
245	my ($registry, $klass, @arg) = @_;
246
247	my $prio = 0;
248
249	my %undo = (
250	registry => $registry,
251	cb => [],
252	);
253
254	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
255
256	while (@arg) {
257	my $type = shift @arg;
258
259	if ($type eq "prio") {
260	$prio = shift @arg;
261
262	} elsif ($type eq "package") {
263	my $pkg = shift @arg;
264
265	while (my ($name, $id) = each %cb_id) {
266	if (my $cb = $pkg->can ($name)) {
267	_attach_cb $registry, %undo, $id, $prio, $cb;
268	}
269	}	841	}
270
271	} elsif (exists $cb_id{$type}) {
272	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
273
274	} elsif (ref $type) {
275	warn "attaching objects not supported, ignoring.\n";
276
277	} else {
278	shift @arg;
279	warn "attach argument '$type' not supported, ignoring.\n";
280	}
281	}
282
283	\%undo
284	}
285
286	sub _attach_attachment {
287	my ($obj, $name, %arg) = @_;
288
289	return if exists $obj->{_attachment}{$name};
290
291	my $res;
292
293	if (my $attach = $attachment{$name}) {
294	my $registry = $obj->registry;
295
296	for (@$attach) {
297	my ($klass, @attach) = @$_;
298	$res = _attach @$registry, $klass, @attach;
299	}
300
301	$obj->{$name} = \%arg;
302	} else {
303	warn "object uses attachment '$name' that is not available, postponing.\n";
304	}
305
306	$obj->{_attachment}{$name} = undef;
307
308	$res->{attachment} = $name;
309	$res
310	}
311
312	*cf::object::attach =
313	*cf::player::attach =
314	*cf::map::attach = sub {
315	my ($obj, $name, %arg) = @_;
316
317	_attach_attachment $obj, $name, %arg;
318	};
319
320	# all those should be optimised
321	*cf::object::detach =
322	*cf::player::detach =
323	*cf::map::detach = sub {
324	my ($obj, $name) = @_;
325
326	delete $obj->{_attachment}{$name};
327	reattach ($obj);
328	};
329
330	*cf::object::attached =
331	*cf::player::attached =
332	*cf::map::attached = sub {
333	my ($obj, $name) = @_;
334
335	exists $obj->{_attachment}{$name}
336	};
337
338	sub attach_global {
339	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
340	}
341
342	sub attach_to_type {
343	my $type = shift;
344	my $subtype = shift;
345
346	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
347	}
348
349	sub attach_to_objects {
350	_attach @CB_OBJECT, KLASS_OBJECT, @_
351	}
352
353	sub attach_to_players {
354	_attach @CB_PLAYER, KLASS_PLAYER, @_
355	}
356
357	sub attach_to_maps {
358	_attach @CB_MAP, KLASS_MAP, @_
359	}
360
361	sub register_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_OBJECT, @_]];
365	}
366
367	sub register_player_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_PLAYER, @_]];
371	}
372
373	sub register_map_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_MAP, @_]];
377	}
378
379	our $override;
380	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
381
382	sub override {
383	$override = 1;
384	@invoke_results = ();
385	}
386
387	sub do_invoke {
388	my $event = shift;
389	my $callbacks = shift;
390
391	@invoke_results = ();
392
393	local $override;
394
395	for (@$callbacks) {
396	eval { &{$_->[1]} };
397
398	if ($@) {
399	warn "$@";
400	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
401	override;
402	}
403
404	return 1 if $override;
405	}
406
407	0	842	}
408	}
409		843
410	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	844	=item $attachable->valid
411
412	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
413
414	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
415
416	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
417
418	Generate a global/object/player/map-specific event with the given arguments.
419
420	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
421	removed in future versions), and there is no public API to access override
422	results (if you must, access C<@cf::invoke_results> directly).
423
424	=back
425
426	#############################################################################
427
428	=head2 METHODS VALID FOR ALL CORE OBJECTS
429
430	=over 4
431
432	=item $object->valid, $player->valid, $map->valid
433		845
434	Just because you have a perl object does not mean that the corresponding	846	Just because you have a perl object does not mean that the corresponding
435	C-level object still exists. If you try to access an object that has no	847	C-level object still exists. If you try to access an object that has no
436	valid C counterpart anymore you get an exception at runtime. This method	848	valid C counterpart anymore you get an exception at runtime. This method
437	can be used to test for existence of the C object part without causing an	849	can be used to test for existence of the C object part without causing an
438	exception.	850	exception.
439		851
		852	=cut
		853
		854	# the following variables are defined in .xs and must not be re-created
		855	our @CB_GLOBAL = (); # registry for all global events
		856	our @CB_ATTACHABLE = (); # registry for all attachables
		857	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		858	our @CB_PLAYER = ();
		859	our @CB_CLIENT = ();
		860	our @CB_TYPE = (); # registry for type (cf-object class) based events
		861	our @CB_MAP = ();
		862
		863	my %attachment;
		864
		865	sub cf::attachable::thawer_merge {
		866	# simply override everything except _meta
		867	local $_[0]{_meta};
		868	%{$_[0]} = %{$_[1]};
		869	}
		870
		871	sub _attach_cb($$$$) {
		872	my ($registry, $event, $prio, $cb) = @_;
		873
		874	use sort 'stable';
		875
		876	$cb = [$prio, $cb];
		877
		878	@{$registry->[$event]} = sort
		879	{ $a->[0] cmp $b->[0] }
		880	@{$registry->[$event] || []}, $cb;
		881	}
		882
		883	# hack
		884	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		885
		886	# attach handles attaching event callbacks
		887	# the only thing the caller has to do is pass the correct
		888	# registry (== where the callback attaches to).
		889	sub _attach {
		890	my ($registry, $klass, @arg) = @_;
		891
		892	my $object_type;
		893	my $prio = 0;
		894	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		895
		896	#TODO: get rid of this hack
		897	if ($attachable_klass{$klass}) {
		898	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		899	}
		900
		901	while (@arg) {
		902	my $type = shift @arg;
		903
		904	if ($type eq "prio") {
		905	$prio = shift @arg;
		906
		907	} elsif ($type eq "type") {
		908	$object_type = shift @arg;
		909	$registry = $CB_TYPE[$object_type] ||= [];
		910
		911	} elsif ($type eq "subtype") {
		912	defined $object_type or Carp::croak "subtype specified without type";
		913	my $object_subtype = shift @arg;
		914	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		915
		916	} elsif ($type eq "package") {
		917	my $pkg = shift @arg;
		918
		919	while (my ($name, $id) = each %cb_id) {
		920	if (my $cb = $pkg->can ($name)) {
		921	_attach_cb $registry, $id, $prio, $cb;
		922	}
		923	}
		924
		925	} elsif (exists $cb_id{$type}) {
		926	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		927
		928	} elsif (ref $type) {
		929	warn "attaching objects not supported, ignoring.\n";
		930
		931	} else {
		932	shift @arg;
		933	warn "attach argument '$type' not supported, ignoring.\n";
		934	}
		935	}
		936	}
		937
		938	sub _object_attach {
		939	my ($obj, $name, %arg) = @_;
		940
		941	return if exists $obj->{_attachment}{$name};
		942
		943	if (my $attach = $attachment{$name}) {
		944	my $registry = $obj->registry;
		945
		946	for (@$attach) {
		947	my ($klass, @attach) = @$_;
		948	_attach $registry, $klass, @attach;
		949	}
		950
		951	$obj->{$name} = \%arg;
		952	} else {
		953	warn "object uses attachment '$name' which is not available, postponing.\n";
		954	}
		955
		956	$obj->{_attachment}{$name} = undef;
		957	}
		958
		959	sub cf::attachable::attach {
		960	if (ref $_[0]) {
		961	_object_attach @_;
		962	} else {
		963	_attach shift->_attach_registry, @_;
		964	}
		965	_recalc_want;
		966	};
		967
		968	# all those should be optimised
		969	sub cf::attachable::detach {
		970	my ($obj, $name) = @_;
		971
		972	if (ref $obj) {
		973	delete $obj->{_attachment}{$name};
		974	reattach ($obj);
		975	} else {
		976	Carp::croak "cannot, currently, detach class attachments";
		977	}
		978	_recalc_want;
		979	};
		980
		981	sub cf::attachable::attached {
		982	my ($obj, $name) = @_;
		983
		984	exists $obj->{_attachment}{$name}
		985	}
		986
		987	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		988	eval "#line " . __LINE__ . " 'cf.pm'
		989	sub cf::\L$klass\E::_attach_registry {
		990	(\\\@CB_$klass, KLASS_$klass)
		991	}
		992
		993	sub cf::\L$klass\E::attachment {
		994	my \$name = shift;
		995
		996	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		997	}
		998	";
		999	die if $@;
		1000	}
		1001
		1002	our $override;
		1003	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1004
		1005	sub override {
		1006	$override = 1;
		1007	@INVOKE_RESULTS = (@_);
		1008	}
		1009
		1010	sub do_invoke {
		1011	my $event = shift;
		1012	my $callbacks = shift;
		1013
		1014	@INVOKE_RESULTS = ();
		1015
		1016	local $override;
		1017
		1018	for (@$callbacks) {
		1019	eval { &{$_->[1]} };
		1020
		1021	if ($@) {
		1022	warn "$@";
		1023	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1024	override;
		1025	}
		1026
		1027	return 1 if $override;
		1028	}
		1029
		1030	0
		1031	}
		1032
		1033	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1034
		1035	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1036
		1037	Generate an object-specific event with the given arguments.
		1038
		1039	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1040	removed in future versions), and there is no public API to access override
		1041	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1042
440	=back	1043	=back
441		1044
442	=cut	1045	=cut
443
444	*cf::object::valid =
445	*cf::player::valid =
446	*cf::map::valid = \&cf::_valid;
447		1046
448	#############################################################################	1047	#############################################################################
449	# object support	1048	# object support
450		1049
451	sub instantiate {	1050	sub _object_equal($$);
		1051	sub _object_equal($$) {
		1052	my ($a, $b) = @_;
		1053
		1054	return 0 unless (ref $a) eq (ref $b);
		1055
		1056	if ("HASH" eq ref $a) {
		1057	my @ka = keys %$a;
		1058	my @kb = keys %$b;
		1059
		1060	return 0 if @ka != @kb;
		1061
		1062	for (0 .. $#ka) {
		1063	return 0 unless $ka[$_] eq $kb[$_];
		1064	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1065	}
		1066
		1067	} elsif ("ARRAY" eq ref $a) {
		1068
		1069	return 0 if @$a != @$b;
		1070
		1071	for (0 .. $#$a) {
		1072	return 0 unless _object_equal $a->[$_], $b->[$_];
		1073	}
		1074
		1075	} elsif ($a ne $b) {
		1076	return 0;
		1077	}
		1078
		1079	1
		1080	}
		1081
		1082	our $SLOW_MERGES;#d#
		1083	sub _can_merge {
452	my ($obj, $data) = @_;	1084	my ($ob1, $ob2) = @_;
453		1085
454	$data = from_json $data;	1086	++$SLOW_MERGES;#d#
455		1087
456	for (@$data) {	1088	# we do the slow way here
457	my ($name, $args) = @$_;	1089	return _object_equal $ob1, $ob2
458
459	$obj->attach ($name, %{$args || {} });
460	}
461	}	1090	}
462		1091
463	# basically do the same as instantiate, without calling instantiate
464	sub reattach {	1092	sub reattach {
		1093	# basically do the same as instantiate, without calling instantiate
465	my ($obj) = @_;	1094	my ($obj) = @_;
		1095
		1096	# no longer needed after getting rid of delete_package?
		1097	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1098
466	my $registry = $obj->registry;	1099	my $registry = $obj->registry;
467		1100
468	@$registry = ();	1101	@$registry = ();
469		1102
470	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1103	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
471		1104
472	for my $name (keys %{ $obj->{_attachment} || {} }) {	1105	for my $name (keys %{ $obj->{_attachment} || {} }) {
473	if (my $attach = $attachment{$name}) {	1106	if (my $attach = $attachment{$name}) {
474	for (@$attach) {	1107	for (@$attach) {
475	my ($klass, @attach) = @$_;	1108	my ($klass, @attach) = @$_;
476	_attach @$registry, $klass, @attach;	1109	_attach $registry, $klass, @attach;
477	}	1110	}
478	} else {	1111	} else {
479	warn "object uses attachment '$name' that is not available, postponing.\n";	1112	warn "object uses attachment '$name' that is not available, postponing.\n";
480	}	1113	}
481	}	1114	}
482	}	1115	}
483		1116
484	sub object_freezer_save {	1117	cf::attachable->attach (
485	my ($filename, $rdata, $objs) = @_;
486
487	if (length $$rdata) {
488	warn sprintf "saving %s (%d,%d)\n",
489	$filename, length $$rdata, scalar @$objs;
490
491	if (open my $fh, ">:raw", "$filename~") {
492	chmod SAVE_MODE, $fh;
493	syswrite $fh, $$rdata;
494	close $fh;
495
496	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
497	chmod SAVE_MODE, $fh;
498	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
499	close $fh;
500	rename "$filename.pst~", "$filename.pst";
501	} else {
502	unlink "$filename.pst";
503	}
504
505	rename "$filename~", $filename;
506	} else {
507	warn "FATAL: $filename~: $!\n";
508	}
509	} else {
510	unlink $filename;
511	unlink "$filename.pst";
512	}
513	}
514
515	sub object_thawer_load {
516	my ($filename) = @_;
517
518	local $/;
519
520	my $av;
521
522	#TODO: use sysread etc.
523	if (open my $data, "<:raw:perlio", $filename) {
524	$data = <$data>;
525	if (open my $pst, "<:raw:perlio", "$filename.pst") {
526	$av = eval { (Storable::thaw <$pst>)->{objs} };
527	}
528	return ($data, $av);
529	}
530
531	()
532	}
533
534	attach_to_objects
535	prio => -1000000,	1118	prio => -1000000,
		1119	on_instantiate => sub {
		1120	my ($obj, $data) = @_;
		1121
		1122	$data = decode_json $data;
		1123
		1124	for (@$data) {
		1125	my ($name, $args) = @$_;
		1126
		1127	$obj->attach ($name, %{$args || {} });
		1128	}
		1129	},
		1130	on_reattach => \&reattach,
536	on_clone => sub {	1131	on_clone => sub {
537	my ($src, $dst) = @_;	1132	my ($src, $dst) = @_;
538		1133
539	@{$dst->registry} = @{$src->registry};	1134	@{$dst->registry} = @{$src->registry};
540		1135
541	%$dst = %$src;	1136	%$dst = %$src;
542		1137
543	%{$dst->{_attachment}} = %{$src->{_attachment}}	1138	%{$dst->{_attachment}} = %{$src->{_attachment}}
544	if exists $src->{_attachment};	1139	if exists $src->{_attachment};
545	},	1140	},
546	;	1141	);
		1142
		1143	sub object_freezer_save {
		1144	my ($filename, $rdata, $objs) = @_;
		1145
		1146	sync_job {
		1147	if (length $$rdata) {
		1148	utf8::decode (my $decname = $filename);
		1149	warn sprintf "saving %s (%d,%d)\n",
		1150	$decname, length $$rdata, scalar @$objs;
		1151
		1152	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1153	aio_chmod $fh, SAVE_MODE;
		1154	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1155	aio_fsync $fh if $cf::USE_FSYNC;
		1156	aio_close $fh;
		1157
		1158	if (@$objs) {
		1159	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1160	aio_chmod $fh, SAVE_MODE;
		1161	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1162	aio_write $fh, 0, (length $data), $data, 0;
		1163	aio_fsync $fh if $cf::USE_FSYNC;
		1164	aio_close $fh;
		1165	aio_rename "$filename.pst~", "$filename.pst";
		1166	}
		1167	} else {
		1168	aio_unlink "$filename.pst";
		1169	}
		1170
		1171	aio_rename "$filename~", $filename;
		1172	} else {
		1173	warn "FATAL: $filename~: $!\n";
		1174	}
		1175	} else {
		1176	aio_unlink $filename;
		1177	aio_unlink "$filename.pst";
		1178	}
		1179	};
		1180	}
		1181
		1182	sub object_freezer_as_string {
		1183	my ($rdata, $objs) = @_;
		1184
		1185	use Data::Dumper;
		1186
		1187	$$rdata . Dumper $objs
		1188	}
		1189
		1190	sub object_thawer_load {
		1191	my ($filename) = @_;
		1192
		1193	my ($data, $av);
		1194
		1195	(aio_load $filename, $data) >= 0
		1196	or return;
		1197
		1198	unless (aio_stat "$filename.pst") {
		1199	(aio_load "$filename.pst", $av) >= 0
		1200	or return;
		1201
		1202	my $st = eval { Coro::Storable::thaw $av };
		1203	$av = $st->{objs};
		1204	}
		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
547		1218
548	#############################################################################	1219	#############################################################################
549	# old plug-in events	1220	# command handling &c
550		1221
551	sub inject_event {	1222	=item cf::register_command $name => \&callback($ob,$args);
552	my $extension = shift;
553	my $event_code = shift;
554		1223
555	my $cb = $hook[$event_code]{$extension}	1224	Register a callback for execution when the client sends the user command
556	or return;	1225	$name.
557		1226
558	&$cb	1227	=cut
559	}
560
561	sub inject_global_event {
562	my $event = shift;
563
564	my $cb = $hook[$event]
565	or return;
566
567	List::Util::max map &$_, values %$cb
568	}
569
570	sub inject_command {
571	my ($name, $obj, $params) = @_;
572
573	for my $cmd (@{ $command{$name} }) {
574	$cmd->[1]->($obj, $params);
575	}
576
577	-1
578	}
579		1228
580	sub register_command {	1229	sub register_command {
581	my ($name, $time, $cb) = @_;	1230	my ($name, $cb) = @_;
582		1231
583	my $caller = caller;	1232	my $caller = caller;
584	#warn "registering command '$name/$time' to '$caller'";	1233	#warn "registering command '$name/$time' to '$caller'";
585		1234
586	push @{ $command{$name} }, [$time, $cb, $caller];	1235	push @{ $COMMAND{$name} }, [$caller, $cb];
587	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
588	}	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
589		1261
590	sub register_extcmd {	1262	sub register_extcmd {
591	my ($name, $cb) = @_;	1263	my ($name, $cb) = @_;
592		1264
593	my $caller = caller;	1265	$EXTCMD{$name} = $cb;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$extcmd{$name} = [$cb, $caller];
597	}	1266	}
598		1267
599	sub register {	1268	sub register_exticmd {
600	my ($base, $pkg) = @_;	1269	my ($name, $cb) = @_;
601		1270
602	#TODO	1271	$EXTICMD{$name} = $cb;
603	}	1272	}
604		1273
605	sub load_extension {	1274	cf::player->attach (
606	my ($path) = @_;	1275	on_command => sub {
		1276	my ($pl, $name, $params) = @_;
607		1277
608	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1278	my $cb = $COMMAND{$name}
609	my $base = $1;	1279	or return;
610	my $pkg = $1;
611	$pkg =~ s/[^[:word:]]/_/g;
612	$pkg = "ext::$pkg";
613		1280
614	warn "loading '$path' into '$pkg'\n";	1281	for my $cmd (@$cb) {
615		1282	$cmd->[1]->($pl->ob, $params);
616	open my $fh, "<:utf8", $path
617	or die "$path: $!";
618
619	my $source =
620	"package $pkg; use strict; use utf8;\n"
621	. "#line 1 \"$path\"\n{\n"
622	. (do { local $/; <$fh> })
623	. "\n};\n1";
624
625	eval $source
626	or die "$path: $@";
627
628	push @exts, $pkg;
629	$ext_pkg{$base} = $pkg;
630
631	# no strict 'refs';
632	# @{"$pkg\::ISA"} = ext::;
633
634	register $base, $pkg;
635	}
636
637	sub unload_extension {
638	my ($pkg) = @_;
639
640	warn "removing extension $pkg\n";
641
642	# remove hooks
643	#TODO
644	# for my $idx (0 .. $#PLUGIN_EVENT) {
645	# delete $hook[$idx]{$pkg};
646	# }
647
648	# remove commands
649	for my $name (keys %command) {
650	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
651
652	if (@cb) {
653	$command{$name} = \@cb;
654	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
655	} else {
656	delete $command{$name};
657	delete $COMMAND{"$name\000"};
658	}	1283	}
		1284
		1285	cf::override;
659	}	1286	},
660
661	# remove extcmds
662	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
663	delete $extcmd{$name};
664	}
665
666	if (my $cb = $pkg->can ("unload")) {
667	eval {
668	$cb->($pkg);
669	1
670	} or warn "$pkg unloaded, but with errors: $@";
671	}
672
673	Symbol::delete_package $pkg;
674	}
675
676	sub load_extensions {
677	my $LIBDIR = maps_directory "perl";
678
679	for my $ext (<$LIBDIR/*.ext>) {
680	next unless -r $ext;
681	eval {
682	load_extension $ext;
683	1
684	} or warn "$ext not loaded: $@";
685	}
686	}
687
688	#############################################################################
689	# extcmd framework, basically convert ext <msg>
690	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
691
692	attach_to_players
693	on_extcmd => sub {	1287	on_extcmd => sub {
694	my ($pl, $buf) = @_;	1288	my ($pl, $buf) = @_;
695		1289
696	my $msg = eval { from_json $buf };	1290	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
697		1291
698	if (ref $msg) {	1292	if (ref $msg) {
		1293	my ($type, $reply, @payload) =
		1294	"ARRAY" eq ref $msg
		1295	? @$msg
		1296	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1297
		1298	my @reply;
		1299
699	if (my $cb = $extcmd{$msg->{msgtype}}) {	1300	if (my $cb = $EXTCMD{$type}) {
700	if (my %reply = $cb->[0]->($pl, $msg)) {	1301	@reply = $cb->($pl, @payload);
701	$pl->ext_reply ($msg->{msgid}, %reply);	1302	}
		1303
		1304	$pl->ext_reply ($reply, @reply)
		1305	if $reply;
		1306
		1307	} else {
		1308	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1309	}
		1310
		1311	cf::override;
		1312	},
		1313	);
		1314
		1315	sub load_extensions {
		1316	cf::sync_job {
		1317	my %todo;
		1318
		1319	for my $path (<$LIBDIR/*.ext>) {
		1320	next unless -r $path;
		1321
		1322	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1323	my $base = $1;
		1324	my $pkg = $1;
		1325	$pkg =~ s/[^[:word:]]/_/g;
		1326	$pkg = "ext::$pkg";
		1327
		1328	open my $fh, "<:utf8", $path
		1329	or die "$path: $!";
		1330
		1331	my $source = do { local $/; <$fh> };
		1332
		1333	my %ext = (
		1334	path => $path,
		1335	base => $base,
		1336	pkg => $pkg,
		1337	);
		1338
		1339	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1340	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1341
		1342	$ext{source} =
		1343	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1344	. "#line 1 \"$path\"\n{\n"
		1345	. $source
		1346	. "\n};\n1";
		1347
		1348	$todo{$base} = \%ext;
		1349	}
		1350
		1351	my %done;
		1352	while (%todo) {
		1353	my $progress;
		1354
		1355	while (my ($k, $v) = each %todo) {
		1356	for (split /,\s*/, $v->{meta}{depends}) {
		1357	goto skip
		1358	unless exists $done{$_};
		1359	}
		1360
		1361	warn "... loading '$k' into '$v->{pkg}'\n";
		1362
		1363	unless (eval $v->{source}) {
		1364	my $msg = $@ ? "$v->{path}: $@\n"
		1365	: "$v->{base}: extension inactive.\n";
		1366
		1367	if (exists $v->{meta}{mandatory}) {
		1368	warn $msg;
		1369	cf::cleanup "mandatory extension failed to load, exiting.";
		1370	}
		1371
		1372	warn $msg;
		1373	}
		1374
		1375	$done{$k} = delete $todo{$k};
		1376	push @EXTS, $v->{pkg};
		1377	$progress = 1;
		1378	}
		1379
		1380	skip:
		1381	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1382	unless $progress;
		1383	}
		1384	};
		1385	}
		1386
		1387	#############################################################################
		1388
		1389	=back
		1390
		1391	=head2 CORE EXTENSIONS
		1392
		1393	Functions and methods that extend core deliantra objects.
		1394
		1395	=cut
		1396
		1397	package cf::player;
		1398
		1399	use Coro::AIO;
		1400
		1401	=head3 cf::player
		1402
		1403	=over 4
		1404
		1405	=item cf::player::num_playing
		1406
		1407	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1408
		1409	=cut
		1410
		1411	sub num_playing {
		1412	scalar grep
		1413	$_->ob->map
		1414	&& !$_->hidden
		1415	&& !$_->ob->flag (cf::FLAG_WIZ),
		1416	cf::player::list
		1417	}
		1418
		1419	=item cf::player::find $login
		1420
		1421	Returns the given player object, loading it if necessary (might block).
		1422
		1423	=cut
		1424
		1425	sub playerdir($) {
		1426	"$PLAYERDIR/"
		1427	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1428	}
		1429
		1430	sub path($) {
		1431	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1432
		1433	(playerdir $login) . "/playerdata"
		1434	}
		1435
		1436	sub find_active($) {
		1437	$cf::PLAYER{$_[0]}
		1438	and $cf::PLAYER{$_[0]}->active
		1439	and $cf::PLAYER{$_[0]}
		1440	}
		1441
		1442	sub exists($) {
		1443	my ($login) = @_;
		1444
		1445	$cf::PLAYER{$login}
		1446	or cf::sync_job { !aio_stat path $login }
		1447	}
		1448
		1449	sub find($) {
		1450	return $cf::PLAYER{$_[0]} || do {
		1451	my $login = $_[0];
		1452
		1453	my $guard = cf::lock_acquire "user_find:$login";
		1454
		1455	$cf::PLAYER{$_[0]} || do {
		1456	# rename old playerfiles to new ones
		1457	#TODO: remove when no longer required
		1458	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1459	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1460	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1461	aio_unlink +(playerdir $login) . "/$login.pl";
		1462
		1463	my $f = new_from_file cf::object::thawer path $login
		1464	or return;
		1465
		1466	my $pl = cf::player::load_pl $f
		1467	or return;
		1468
		1469	local $cf::PLAYER_LOADING{$login} = $pl;
		1470	$f->resolve_delayed_derefs;
		1471	$cf::PLAYER{$login} = $pl
		1472	}
		1473	}
		1474	}
		1475
		1476	sub save($) {
		1477	my ($pl) = @_;
		1478
		1479	return if $pl->{deny_save};
		1480
		1481	my $path = path $pl;
		1482	my $guard = cf::lock_acquire "user_save:$path";
		1483
		1484	return if $pl->{deny_save};
		1485
		1486	aio_mkdir playerdir $pl, 0770;
		1487	$pl->{last_save} = $cf::RUNTIME;
		1488
		1489	cf::get_slot 0.01;
		1490
		1491	$pl->save_pl ($path);
		1492	cf::cede_to_tick;
		1493	}
		1494
		1495	sub new($) {
		1496	my ($login) = @_;
		1497
		1498	my $self = create;
		1499
		1500	$self->ob->name ($login);
		1501	$self->{deny_save} = 1;
		1502
		1503	$cf::PLAYER{$login} = $self;
		1504
		1505	$self
		1506	}
		1507
		1508	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1509
		1510	=cut
		1511
		1512	sub send_msg {
		1513	my $ns = shift->ns
		1514	or return;
		1515	$ns->send_msg (@_);
		1516	}
		1517
		1518	=item $pl->quit_character
		1519
		1520	Nukes the player without looking back. If logged in, the connection will
		1521	be destroyed. May block for a long time.
		1522
		1523	=cut
		1524
		1525	sub quit_character {
		1526	my ($pl) = @_;
		1527
		1528	my $name = $pl->ob->name;
		1529
		1530	$pl->{deny_save} = 1;
		1531	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1532
		1533	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1534	$pl->deactivate;
		1535	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1536	$pl->ob->check_score;
		1537	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1538	$pl->ns->destroy if $pl->ns;
		1539
		1540	my $path = playerdir $pl;
		1541	my $temp = "$path~$cf::RUNTIME~deleting~";
		1542	aio_rename $path, $temp;
		1543	delete $cf::PLAYER{$pl->ob->name};
		1544	$pl->destroy;
		1545
		1546	my $prefix = qr<^~\Q$name\E/>;
		1547
		1548	# nuke player maps
		1549	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1550
		1551	IO::AIO::aio_rmtree $temp;
		1552	}
		1553
		1554	=item $pl->kick
		1555
		1556	Kicks a player out of the game. This destroys the connection.
		1557
		1558	=cut
		1559
		1560	sub kick {
		1561	my ($pl, $kicker) = @_;
		1562
		1563	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1564	$pl->killer ("kicked");
		1565	$pl->ns->destroy;
		1566	}
		1567
		1568	=item cf::player::list_logins
		1569
		1570	Returns am arrayref of all valid playernames in the system, can take a
		1571	while and may block, so not sync_job-capable, ever.
		1572
		1573	=cut
		1574
		1575	sub list_logins {
		1576	my $dirs = aio_readdir $PLAYERDIR
		1577	or return [];
		1578
		1579	my @logins;
		1580
		1581	for my $login (@$dirs) {
		1582	my $path = path $login;
		1583
		1584	# a .pst is a dead give-away for a valid player
		1585	# if no pst file found, open and chekc for blocked users
		1586	if (aio_stat "$path.pst") {
		1587	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1588	aio_read $fh, 0, 512, my $buf, 0 or next;
		1589	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1590	}
		1591
		1592	utf8::decode $login;
		1593	push @logins, $login;
		1594	}
		1595
		1596	\@logins
		1597	}
		1598
		1599	=item $player->maps
		1600
		1601	Returns an arrayref of map paths that are private for this
		1602	player. May block.
		1603
		1604	=cut
		1605
		1606	sub maps($) {
		1607	my ($pl) = @_;
		1608
		1609	$pl = ref $pl ? $pl->ob->name : $pl;
		1610
		1611	my $files = aio_readdir playerdir $pl
		1612	or return;
		1613
		1614	my @paths;
		1615
		1616	for (@$files) {
		1617	utf8::decode $_;
		1618	next if /\.(?:pl|pst)$/;
		1619	next unless /^$PATH_SEP/o;
		1620
		1621	push @paths, cf::map::normalise "~$pl/$_";
		1622	}
		1623
		1624	\@paths
		1625	}
		1626
		1627	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1628
		1629	Expand deliantra pod fragments into protocol xml.
		1630
		1631	=item $player->ext_reply ($msgid, @msg)
		1632
		1633	Sends an ext reply to the player.
		1634
		1635	=cut
		1636
		1637	sub ext_reply($$@) {
		1638	my ($self, $id, @msg) = @_;
		1639
		1640	$self->ns->ext_reply ($id, @msg)
		1641	}
		1642
		1643	=item $player->ext_msg ($type, @msg)
		1644
		1645	Sends an ext event to the client.
		1646
		1647	=cut
		1648
		1649	sub ext_msg($$@) {
		1650	my ($self, $type, @msg) = @_;
		1651
		1652	$self->ns->ext_msg ($type, @msg);
		1653	}
		1654
		1655	=head3 cf::region
		1656
		1657	=over 4
		1658
		1659	=cut
		1660
		1661	package cf::region;
		1662
		1663	=item cf::region::find_by_path $path
		1664
		1665	Tries to decuce the likely region for a map knowing only its path.
		1666
		1667	=cut
		1668
		1669	sub find_by_path($) {
		1670	my ($path) = @_;
		1671
		1672	my ($match, $specificity);
		1673
		1674	for my $region (list) {
		1675	if ($region->{match} && $path =~ $region->{match}) {
		1676	($match, $specificity) = ($region, $region->specificity)
		1677	if $region->specificity > $specificity;
		1678	}
		1679	}
		1680
		1681	$match
		1682	}
		1683
		1684	=back
		1685
		1686	=head3 cf::map
		1687
		1688	=over 4
		1689
		1690	=cut
		1691
		1692	package cf::map;
		1693
		1694	use Fcntl;
		1695	use Coro::AIO;
		1696
		1697	use overload
		1698	'""' => \&as_string,
		1699	fallback => 1;
		1700
		1701	our $MAX_RESET = 3600;
		1702	our $DEFAULT_RESET = 3000;
		1703
		1704	sub generate_random_map {
		1705	my ($self, $rmp) = @_;
		1706
		1707	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1708
		1709	# mit "rum" bekleckern, nicht
		1710	$self->_create_random_map (
		1711	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1712	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1713	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1714	$rmp->{exit_on_final_map},
		1715	$rmp->{xsize}, $rmp->{ysize},
		1716	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1717	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1718	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1719	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1720	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1721	(cf::region::find $rmp->{region}), $rmp->{custom}
		1722	)
		1723	}
		1724
		1725	=item cf::map->register ($regex, $prio)
		1726
		1727	Register a handler for the map path matching the given regex at the
		1728	givne priority (higher is better, built-in handlers have priority 0, the
		1729	default).
		1730
		1731	=cut
		1732
		1733	sub register {
		1734	my (undef, $regex, $prio) = @_;
		1735	my $pkg = caller;
		1736
		1737	no strict;
		1738	push @{"$pkg\::ISA"}, __PACKAGE__;
		1739
		1740	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1741	}
		1742
		1743	# also paths starting with '/'
		1744	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1745
		1746	sub thawer_merge {
		1747	my ($self, $merge) = @_;
		1748
		1749	# we have to keep some variables in memory intact
		1750	local $self->{path};
		1751	local $self->{load_path};
		1752
		1753	$self->SUPER::thawer_merge ($merge);
		1754	}
		1755
		1756	sub normalise {
		1757	my ($path, $base) = @_;
		1758
		1759	$path = "$path"; # make sure its a string
		1760
		1761	$path =~ s/\.map$//;
		1762
		1763	# map plan:
		1764	#
		1765	# /! non-realised random map exit (special hack!)
		1766	# {... are special paths that are not being touched
		1767	# ?xxx/... are special absolute paths
		1768	# ?random/... random maps
		1769	# /... normal maps
		1770	# ~user/... per-player map of a specific user
		1771
		1772	$path =~ s/$PATH_SEP/\//go;
		1773
		1774	# treat it as relative path if it starts with
		1775	# something that looks reasonable
		1776	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1777	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1778
		1779	$base =~ s{[^/]+/?$}{};
		1780	$path = "$base/$path";
		1781	}
		1782
		1783	for ($path) {
		1784	redo if s{//}{/};
		1785	redo if s{/\.?/}{/};
		1786	redo if s{/[^/]+/\.\./}{/};
		1787	}
		1788
		1789	$path
		1790	}
		1791
		1792	sub new_from_path {
		1793	my (undef, $path, $base) = @_;
		1794
		1795	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1796
		1797	$path = normalise $path, $base;
		1798
		1799	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1800	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1801	my $self = bless cf::map::new, $pkg;
		1802	$self->{path} = $path; $self->path ($path);
		1803	$self->init; # pass $1 etc.
		1804	return $self;
		1805	}
		1806	}
		1807
		1808	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1809	()
		1810	}
		1811
		1812	sub init {
		1813	my ($self) = @_;
		1814
		1815	$self
		1816	}
		1817
		1818	sub as_string {
		1819	my ($self) = @_;
		1820
		1821	"$self->{path}"
		1822	}
		1823
		1824	# the displayed name, this is a one way mapping
		1825	sub visible_name {
		1826	&as_string
		1827	}
		1828
		1829	# the original (read-only) location
		1830	sub load_path {
		1831	my ($self) = @_;
		1832
		1833	"$MAPDIR/$self->{path}.map"
		1834	}
		1835
		1836	# the temporary/swap location
		1837	sub save_path {
		1838	my ($self) = @_;
		1839
		1840	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1841	"$TMPDIR/$path.map"
		1842	}
		1843
		1844	# the unique path, undef == no special unique path
		1845	sub uniq_path {
		1846	my ($self) = @_;
		1847
		1848	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1849	"$UNIQUEDIR/$path"
		1850	}
		1851
		1852	# and all this just because we cannot iterate over
		1853	# all maps in C++...
		1854	sub change_all_map_light {
		1855	my ($change) = @_;
		1856
		1857	$_->change_map_light ($change)
		1858	for grep $_->outdoor, values %cf::MAP;
		1859	}
		1860
		1861	sub decay_objects {
		1862	my ($self) = @_;
		1863
		1864	return if $self->{deny_reset};
		1865
		1866	$self->do_decay_objects;
		1867	}
		1868
		1869	sub unlink_save {
		1870	my ($self) = @_;
		1871
		1872	utf8::encode (my $save = $self->save_path);
		1873	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1874	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1875	}
		1876
		1877	sub load_header_from($) {
		1878	my ($self, $path) = @_;
		1879
		1880	utf8::encode $path;
		1881	my $f = new_from_file cf::object::thawer $path
		1882	or return;
		1883
		1884	$self->_load_header ($f)
		1885	or return;
		1886
		1887	local $MAP_LOADING{$self->{path}} = $self;
		1888	$f->resolve_delayed_derefs;
		1889
		1890	$self->{load_path} = $path;
		1891
		1892	1
		1893	}
		1894
		1895	sub load_header_orig {
		1896	my ($self) = @_;
		1897
		1898	$self->load_header_from ($self->load_path)
		1899	}
		1900
		1901	sub load_header_temp {
		1902	my ($self) = @_;
		1903
		1904	$self->load_header_from ($self->save_path)
		1905	}
		1906
		1907	sub prepare_temp {
		1908	my ($self) = @_;
		1909
		1910	$self->last_access ((delete $self->{last_access})
		1911	|| $cf::RUNTIME); #d#
		1912	# safety
		1913	$self->{instantiate_time} = $cf::RUNTIME
		1914	if $self->{instantiate_time} > $cf::RUNTIME;
		1915	}
		1916
		1917	sub prepare_orig {
		1918	my ($self) = @_;
		1919
		1920	$self->{load_original} = 1;
		1921	$self->{instantiate_time} = $cf::RUNTIME;
		1922	$self->last_access ($cf::RUNTIME);
		1923	$self->instantiate;
		1924	}
		1925
		1926	sub load_header {
		1927	my ($self) = @_;
		1928
		1929	if ($self->load_header_temp) {
		1930	$self->prepare_temp;
		1931	} else {
		1932	$self->load_header_orig
		1933	or return;
		1934	$self->prepare_orig;
		1935	}
		1936
		1937	$self->{deny_reset} = 1
		1938	if $self->no_reset;
		1939
		1940	$self->default_region (cf::region::find_by_path $self->{path})
		1941	unless $self->default_region;
		1942
		1943	1
		1944	}
		1945
		1946	sub find;
		1947	sub find {
		1948	my ($path, $origin) = @_;
		1949
		1950	$path = normalise $path, $origin && $origin->path;
		1951
		1952	cf::lock_wait "map_data:$path";#d#remove
		1953	cf::lock_wait "map_find:$path";
		1954
		1955	$cf::MAP{$path} || do {
		1956	my $guard1 = cf::lock_acquire "map_data:$path"; # just for the fun of it
		1957	my $guard2 = cf::lock_acquire "map_find:$path";
		1958
		1959	my $map = new_from_path cf::map $path
		1960	or return;
		1961
		1962	$map->{last_save} = $cf::RUNTIME;
		1963
		1964	$map->load_header
		1965	or return;
		1966
		1967	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1968	# doing this can freeze the server in a sync job, obviously
		1969	#$cf::WAIT_FOR_TICK->wait;
		1970	undef $guard2;
		1971	undef $guard1;
		1972	$map->reset;
		1973	return find $path;
		1974	}
		1975
		1976	$cf::MAP{$path} = $map
		1977	}
		1978	}
		1979
		1980	sub pre_load { }
		1981	sub post_load { }
		1982
		1983	sub load {
		1984	my ($self) = @_;
		1985
		1986	local $self->{deny_reset} = 1; # loading can take a long time
		1987
		1988	my $path = $self->{path};
		1989
		1990	{
		1991	my $guard = cf::lock_acquire "map_data:$path";
		1992
		1993	return unless $self->valid;
		1994	return unless $self->in_memory == cf::MAP_SWAPPED;
		1995
		1996	$self->in_memory (cf::MAP_LOADING);
		1997
		1998	$self->alloc;
		1999
		2000	$self->pre_load;
		2001	cf::cede_to_tick;
		2002
		2003	my $f = new_from_file cf::object::thawer $self->{load_path};
		2004	$f->skip_block;
		2005	$self->_load_objects ($f)
		2006	or return;
		2007
		2008	$self->post_load_original
		2009	if delete $self->{load_original};
		2010
		2011	if (my $uniq = $self->uniq_path) {
		2012	utf8::encode $uniq;
		2013	unless (aio_stat $uniq) {
		2014	if (my $f = new_from_file cf::object::thawer $uniq) {
		2015	$self->clear_unique_items;
		2016	$self->_load_objects ($f);
		2017	$f->resolve_delayed_derefs;
702	}	2018	}
703	}	2019	}
704	} else {
705	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
706	}	2020	}
707		2021
708	cf::override;	2022	$f->resolve_delayed_derefs;
		2023
		2024	cf::cede_to_tick;
		2025	# now do the right thing for maps
		2026	$self->link_multipart_objects;
		2027	$self->difficulty ($self->estimate_difficulty)
		2028	unless $self->difficulty;
		2029	cf::cede_to_tick;
		2030
		2031	unless ($self->{deny_activate}) {
		2032	$self->decay_objects;
		2033	$self->fix_auto_apply;
		2034	$self->update_buttons;
		2035	cf::cede_to_tick;
		2036	$self->set_darkness_map;
		2037	cf::cede_to_tick;
		2038	$self->activate;
		2039	}
		2040
		2041	$self->{last_save} = $cf::RUNTIME;
		2042	$self->last_access ($cf::RUNTIME);
		2043
		2044	$self->in_memory (cf::MAP_ACTIVE);
709	},	2045	}
710	;
711		2046
712	#############################################################################	2047	$self->post_load;
713	# load/save/clean perl data associated with a map	2048	}
714		2049
715	*cf::mapsupport::on_clean = sub {	2050	sub customise_for {
		2051	my ($self, $ob) = @_;
		2052
		2053	return find "~" . $ob->name . "/" . $self->{path}
		2054	if $self->per_player;
		2055
		2056	# return find "?party/" . $ob->name . "/" . $self->{path}
		2057	# if $self->per_party;
		2058
		2059	$self
		2060	}
		2061
		2062	# find and load all maps in the 3x3 area around a map
		2063	sub load_neighbours {
716	my ($map) = @_;	2064	my ($map) = @_;
717		2065
718	my $path = $map->tmpname;	2066	my @neigh; # diagonal neighbours
719	defined $path or return;
720		2067
721	unlink "$path.pst";	2068	for (0 .. 3) {
722	};	2069	my $neigh = $map->tile_path ($_)
		2070	or next;
		2071	$neigh = find $neigh, $map
		2072	or next;
		2073	$neigh->load;
723		2074
724	attach_to_maps prio => -10000, package => cf::mapsupport::;	2075	push @neigh,
		2076	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2077	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2078	}
725		2079
726	#############################################################################	2080	for (grep defined $_->[0], @neigh) {
727	# load/save perl data associated with player->ob objects	2081	my ($path, $origin) = @$_;
728		2082	my $neigh = find $path, $origin
729	sub all_objects(@) {	2083	or next;
730	@_, map all_objects ($_->inv), @_	2084	$neigh->load;
		2085	}
731	}	2086	}
732		2087
733	# TODO: compatibility cruft, remove when no longer needed	2088	sub find_sync {
734	attach_to_players	2089	my ($path, $origin) = @_;
735	on_load => sub {
736	my ($pl, $path) = @_;
737		2090
738	for my $o (all_objects $pl->ob) {	2091	cf::sync_job { find $path, $origin }
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2092	}
740	$o->set_ob_key_value ("_perl_data");
741		2093
742	%$o = %{ Storable::thaw pack "H*", $value };	2094	sub do_load_sync {
		2095	my ($map) = @_;
		2096
		2097	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2098	if $Coro::current == $Coro::main;
		2099
		2100	cf::sync_job { $map->load };
		2101	}
		2102
		2103	our %MAP_PREFETCH;
		2104	our $MAP_PREFETCHER = undef;
		2105
		2106	sub find_async {
		2107	my ($path, $origin, $load) = @_;
		2108
		2109	$path = normalise $path, $origin && $origin->{path};
		2110
		2111	if (my $map = $cf::MAP{$path}) {
		2112	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2113	}
		2114
		2115	$MAP_PREFETCH{$path} |= $load;
		2116
		2117	$MAP_PREFETCHER ||= cf::async {
		2118	$Coro::current->{desc} = "map prefetcher";
		2119
		2120	while (%MAP_PREFETCH) {
		2121	while (my ($k, $v) = each %MAP_PREFETCH) {
		2122	if (my $map = find $k) {
		2123	$map->load if $v;
		2124	}
		2125
		2126	delete $MAP_PREFETCH{$k};
743	}	2127	}
744	}	2128	}
		2129	undef $MAP_PREFETCHER;
		2130	};
		2131	$MAP_PREFETCHER->prio (6);
		2132
		2133	()
		2134	}
		2135
		2136	sub save {
		2137	my ($self) = @_;
		2138
		2139	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2140
		2141	$self->{last_save} = $cf::RUNTIME;
		2142
		2143	return unless $self->dirty;
		2144
		2145	my $save = $self->save_path; utf8::encode $save;
		2146	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2147
		2148	$self->{load_path} = $save;
		2149
		2150	return if $self->{deny_save};
		2151
		2152	local $self->{last_access} = $self->last_access;#d#
		2153
		2154	cf::async {
		2155	$Coro::current->{desc} = "map player save";
		2156	$_->contr->save for $self->players;
		2157	};
		2158
		2159	cf::get_slot 0.02;
		2160
		2161	if ($uniq) {
		2162	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2163	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2164	} else {
		2165	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
745	},	2166	}
746	;	2167	}
747		2168
748	#############################################################################	2169	sub swap_out {
		2170	my ($self) = @_;
749		2171
750	=head2 CORE EXTENSIONS	2172	# save first because save cedes
		2173	$self->save;
751		2174
752	Functions and methods that extend core crossfire objects.	2175	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2176
		2177	return if $self->players;
		2178	return if $self->in_memory != cf::MAP_ACTIVE;
		2179	return if $self->{deny_save};
		2180
		2181	$self->in_memory (cf::MAP_SWAPPED);
		2182
		2183	$self->deactivate;
		2184	$_->clear_links_to ($self) for values %cf::MAP;
		2185	$self->clear;
		2186	}
		2187
		2188	sub reset_at {
		2189	my ($self) = @_;
		2190
		2191	# TODO: safety, remove and allow resettable per-player maps
		2192	return 1e99 if $self->{deny_reset};
		2193
		2194	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2195	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2196
		2197	$time + $to
		2198	}
		2199
		2200	sub should_reset {
		2201	my ($self) = @_;
		2202
		2203	$self->reset_at <= $cf::RUNTIME
		2204	}
		2205
		2206	sub reset {
		2207	my ($self) = @_;
		2208
		2209	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2210
		2211	return if $self->players;
		2212
		2213	warn "resetting map ", $self->path;
		2214
		2215	$self->in_memory (cf::MAP_SWAPPED);
		2216
		2217	# need to save uniques path
		2218	unless ($self->{deny_save}) {
		2219	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2220
		2221	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2222	if $uniq;
		2223	}
		2224
		2225	delete $cf::MAP{$self->path};
		2226
		2227	$self->deactivate;
		2228	$_->clear_links_to ($self) for values %cf::MAP;
		2229	$self->clear;
		2230
		2231	$self->unlink_save;
		2232	$self->destroy;
		2233	}
		2234
		2235	my $nuke_counter = "aaaa";
		2236
		2237	sub nuke {
		2238	my ($self) = @_;
		2239
		2240	{
		2241	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2242
		2243	delete $cf::MAP{$self->path};
		2244
		2245	$self->unlink_save;
		2246
		2247	bless $self, "cf::map";
		2248	delete $self->{deny_reset};
		2249	$self->{deny_save} = 1;
		2250	$self->reset_timeout (1);
		2251	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2252
		2253	$cf::MAP{$self->path} = $self;
		2254	}
		2255
		2256	$self->reset; # polite request, might not happen
		2257	}
		2258
		2259	=item $maps = cf::map::tmp_maps
		2260
		2261	Returns an arrayref with all map paths of currently instantiated and saved
		2262	maps. May block.
		2263
		2264	=cut
		2265
		2266	sub tmp_maps() {
		2267	[
		2268	map {
		2269	utf8::decode $_;
		2270	/\.map$/
		2271	? normalise $_
		2272	: ()
		2273	} @{ aio_readdir $TMPDIR or [] }
		2274	]
		2275	}
		2276
		2277	=item $maps = cf::map::random_maps
		2278
		2279	Returns an arrayref with all map paths of currently instantiated and saved
		2280	random maps. May block.
		2281
		2282	=cut
		2283
		2284	sub random_maps() {
		2285	[
		2286	map {
		2287	utf8::decode $_;
		2288	/\.map$/
		2289	? normalise "?random/$_"
		2290	: ()
		2291	} @{ aio_readdir $RANDOMDIR or [] }
		2292	]
		2293	}
		2294
		2295	=item cf::map::unique_maps
		2296
		2297	Returns an arrayref of paths of all shared maps that have
		2298	instantiated unique items. May block.
		2299
		2300	=cut
		2301
		2302	sub unique_maps() {
		2303	[
		2304	map {
		2305	utf8::decode $_;
		2306	s/\.map$//; # TODO future compatibility hack
		2307	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2308	? ()
		2309	: normalise $_
		2310	} @{ aio_readdir $UNIQUEDIR or [] }
		2311	]
		2312	}
		2313
		2314	=back
		2315
		2316	=head3 cf::object
		2317
		2318	=cut
		2319
		2320	package cf::object;
753		2321
754	=over 4	2322	=over 4
755		2323
756	=item cf::player::exists $login	2324	=item $ob->inv_recursive
757		2325
758	Returns true when the given account exists.	2326	Returns the inventory of the object I<and> their inventories, recursively,
		2327	but I<not> the object itself.
759		2328
760	=cut	2329	=cut
761		2330
762	sub cf::player::exists($) {	2331	sub inv_recursive_;
763	cf::player::find $_[0]	2332	sub inv_recursive_ {
764	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2333	map { $_, inv_recursive_ $_->inv } @_
765	}	2334	}
766		2335
		2336	sub inv_recursive {
		2337	inv_recursive_ inv $_[0]
		2338	}
		2339
		2340	=item $ref = $ob->ref
		2341
		2342	Creates and returns a persistent reference to an object that can be stored as a string.
		2343
		2344	=item $ob = cf::object::deref ($refstring)
		2345
		2346	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2347	even if the object actually exists. May block.
		2348
		2349	=cut
		2350
		2351	sub deref {
		2352	my ($ref) = @_;
		2353
		2354	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2355	my ($uuid, $name) = ($1, $2);
		2356	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2357	or return;
		2358	$pl->ob->uuid eq $uuid
		2359	or return;
		2360
		2361	$pl->ob
		2362	} else {
		2363	warn "$ref: cannot resolve object reference\n";
		2364	undef
		2365	}
		2366	}
		2367
		2368	package cf;
		2369
		2370	=back
		2371
		2372	=head3 cf::object::player
		2373
		2374	=over 4
		2375
767	=item $player->reply ($npc, $msg[, $flags])	2376	=item $player_object->reply ($npc, $msg[, $flags])
768		2377
769	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2378	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
770	can be C<undef>. Does the right thing when the player is currently in a	2379	can be C<undef>. Does the right thing when the player is currently in a
771	dialogue with the given NPC character.	2380	dialogue with the given NPC character.
772		2381
773	=cut	2382	=cut
774		2383
		2384	our $SAY_CHANNEL = {
		2385	id => "say",
		2386	title => "Map",
		2387	reply => "say ",
		2388	tooltip => "Things said to and replied from npcs near you and other players on the same map only.",
		2389	};
		2390
		2391	our $CHAT_CHANNEL = {
		2392	id => "chat",
		2393	title => "Chat",
		2394	reply => "chat ",
		2395	tooltip => "Player chat and shouts, global to the server.",
		2396	};
		2397
775	# rough implementation of a future "reply" method that works	2398	# rough implementation of a future "reply" method that works
776	# with dialog boxes.	2399	# with dialog boxes.
		2400	#TODO: the first argument must go, split into a $npc->reply_to ( method
777	sub cf::object::player::reply($$$;$) {	2401	sub cf::object::player::reply($$$;$) {
778	my ($self, $npc, $msg, $flags) = @_;	2402	my ($self, $npc, $msg, $flags) = @_;
779		2403
780	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2404	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
781		2405
782	if ($self->{record_replies}) {	2406	if ($self->{record_replies}) {
783	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2407	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2408
784	} else {	2409	} else {
		2410	my $pl = $self->contr;
		2411
		2412	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2413	my $dialog = $pl->{npc_dialog};
		2414	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2415
		2416	} else {
785	$msg = $npc->name . " says: $msg" if $npc;	2417	$msg = $npc->name . " says: $msg" if $npc;
786	$self->message ($msg, $flags);	2418	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2419	}
		2420	}
		2421	}
		2422
		2423	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2424
		2425	=cut
		2426
		2427	sub cf::object::send_msg {
		2428	my $pl = shift->contr
		2429	or return;
		2430	$pl->send_msg (@_);
		2431	}
		2432
		2433	=item $player_object->may ("access")
		2434
		2435	Returns wether the given player is authorized to access resource "access"
		2436	(e.g. "command_wizcast").
		2437
		2438	=cut
		2439
		2440	sub cf::object::player::may {
		2441	my ($self, $access) = @_;
		2442
		2443	$self->flag (cf::FLAG_WIZ) ||
		2444	(ref $cf::CFG{"may_$access"}
		2445	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2446	: $cf::CFG{"may_$access"})
		2447	}
		2448
		2449	=item $player_object->enter_link
		2450
		2451	Freezes the player and moves him/her to a special map (C<{link}>).
		2452
		2453	The player should be reasonably safe there for short amounts of time (e.g.
		2454	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2455	though, as the palyer cannot control the character while it is on the link
		2456	map.
		2457
		2458	Will never block.
		2459
		2460	=item $player_object->leave_link ($map, $x, $y)
		2461
		2462	Moves the player out of the special C<{link}> map onto the specified
		2463	map. If the map is not valid (or omitted), the player will be moved back
		2464	to the location he/she was before the call to C<enter_link>, or, if that
		2465	fails, to the emergency map position.
		2466
		2467	Might block.
		2468
		2469	=cut
		2470
		2471	sub link_map {
		2472	unless ($LINK_MAP) {
		2473	$LINK_MAP = cf::map::find "{link}"
		2474	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2475	$LINK_MAP->load;
		2476	}
		2477
		2478	$LINK_MAP
		2479	}
		2480
		2481	sub cf::object::player::enter_link {
		2482	my ($self) = @_;
		2483
		2484	$self->deactivate_recursive;
		2485
		2486	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2487
		2488	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2489	if $self->map && $self->map->{path} ne "{link}";
		2490
		2491	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2492	}
		2493
		2494	sub cf::object::player::leave_link {
		2495	my ($self, $map, $x, $y) = @_;
		2496
		2497	return unless $self->contr->active;
		2498
		2499	my $link_pos = delete $self->{_link_pos};
		2500
		2501	unless ($map) {
		2502	# restore original map position
		2503	($map, $x, $y) = @{ $link_pos || [] };
		2504	$map = cf::map::find $map;
		2505
		2506	unless ($map) {
		2507	($map, $x, $y) = @$EMERGENCY_POSITION;
		2508	$map = cf::map::find $map
		2509	or die "FATAL: cannot load emergency map\n";
		2510	}
		2511	}
		2512
		2513	($x, $y) = (-1, -1)
		2514	unless (defined $x) && (defined $y);
		2515
		2516	# use -1 or undef as default coordinates, not 0, 0
		2517	($x, $y) = ($map->enter_x, $map->enter_y)
		2518	if $x <=0 && $y <= 0;
		2519
		2520	$map->load;
		2521	$map->load_neighbours;
		2522
		2523	return unless $self->contr->active;
		2524	$self->flag (cf::FLAG_DEBUG, 0);#d# temp
		2525	$self->activate_recursive;
		2526
		2527	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2528	$self->enter_map ($map, $x, $y);
		2529	}
		2530
		2531	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2532
		2533	Moves the player to the given map-path and coordinates by first freezing
		2534	her, loading and preparing them map, calling the provided $check callback
		2535	that has to return the map if sucecssful, and then unfreezes the player on
		2536	the new (success) or old (failed) map position. In either case, $done will
		2537	be called at the end of this process.
		2538
		2539	Note that $check will be called with a potentially non-loaded map, so if
		2540	it needs a loaded map it has to call C<< ->load >>.
		2541
		2542	=cut
		2543
		2544	our $GOTOGEN;
		2545
		2546	sub cf::object::player::goto {
		2547	my ($self, $path, $x, $y, $check, $done) = @_;
		2548
		2549	# do generation counting so two concurrent goto's will be executed in-order
		2550	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2551
		2552	$self->enter_link;
		2553
		2554	(async {
		2555	$Coro::current->{desc} = "player::goto $path $x $y";
		2556
		2557	# *tag paths override both path and x|y
		2558	if ($path =~ /^\*(.*)$/) {
		2559	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2560	my $ob = $obs[rand @obs];
		2561
		2562	# see if we actually can go there
		2563	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2564	$ob = $obs[rand @obs];
		2565	} else {
		2566	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2567	}
		2568	# else put us there anyways for now #d#
		2569
		2570	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2571	} else {
		2572	($path, $x, $y) = (undef, undef, undef);
		2573	}
		2574	}
		2575
		2576	my $map = eval {
		2577	my $map = defined $path ? cf::map::find $path : undef;
		2578
		2579	if ($map) {
		2580	$map = $map->customise_for ($self);
		2581	$map = $check->($map) if $check && $map;
		2582	} else {
		2583	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2584	}
		2585
		2586	$map
		2587	};
		2588
		2589	if ($@) {
		2590	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2591	LOG llevError | logBacktrace, Carp::longmess $@;
		2592	}
		2593
		2594	if ($gen == $self->{_goto_generation}) {
		2595	delete $self->{_goto_generation};
		2596	$self->leave_link ($map, $x, $y);
		2597	}
		2598
		2599	$done->() if $done;
		2600	})->prio (1);
		2601	}
		2602
		2603	=item $player_object->enter_exit ($exit_object)
		2604
		2605	=cut
		2606
		2607	sub parse_random_map_params {
		2608	my ($spec) = @_;
		2609
		2610	my $rmp = { # defaults
		2611	xsize => (cf::rndm 15, 40),
		2612	ysize => (cf::rndm 15, 40),
		2613	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2614	#layout => string,
787	}	2615	};
788	}
789		2616
		2617	for (split /\n/, $spec) {
		2618	my ($k, $v) = split /\s+/, $_, 2;
		2619
		2620	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2621	}
		2622
		2623	$rmp
		2624	}
		2625
		2626	sub prepare_random_map {
		2627	my ($exit) = @_;
		2628
		2629	# all this does is basically replace the /! path by
		2630	# a new random map path (?random/...) with a seed
		2631	# that depends on the exit object
		2632
		2633	my $rmp = parse_random_map_params $exit->msg;
		2634
		2635	if ($exit->map) {
		2636	$rmp->{region} = $exit->region->name;
		2637	$rmp->{origin_map} = $exit->map->path;
		2638	$rmp->{origin_x} = $exit->x;
		2639	$rmp->{origin_y} = $exit->y;
		2640
		2641	$exit->map->touch;
		2642	}
		2643
		2644	$rmp->{random_seed} ||= $exit->random_seed;
		2645
		2646	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2647	my $md5 = Digest::MD5::md5_hex $data;
		2648	my $meta = "$RANDOMDIR/$md5.meta";
		2649
		2650	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2651	aio_write $fh, 0, (length $data), $data, 0;
		2652	undef $fh;
		2653	aio_rename "$meta~", $meta;
		2654
		2655	my $slaying = "?random/$md5";
		2656
		2657	if ($exit->valid) {
		2658	$exit->slaying ("?random/$md5");
		2659	$exit->msg (undef);
		2660	}
		2661	}
		2662	}
		2663
		2664	sub cf::object::player::enter_exit {
		2665	my ($self, $exit) = @_;
		2666
		2667	return unless $self->type == cf::PLAYER;
		2668
		2669	$self->enter_link;
		2670
		2671	(async {
		2672	$Coro::current->{desc} = "enter_exit";
		2673
		2674	unless (eval {
		2675	$self->deactivate_recursive; # just to be sure
		2676
		2677	# random map handling
		2678	{
		2679	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2680
		2681	prepare_random_map $exit
		2682	if $exit->slaying eq "/!";
		2683	}
		2684
		2685	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2686	my $x = $exit->stats->hp;
		2687	my $y = $exit->stats->sp;
		2688
		2689	$self->goto ($map, $x, $y);
		2690
		2691	# if exit is damned, update players death & WoR home-position
		2692	$self->contr->savebed ($map, $x, $y)
		2693	if $exit->flag (cf::FLAG_DAMNED);
		2694
		2695	1
		2696	}) {
		2697	$self->message ("Something went wrong deep within the deliantra server. "
		2698	. "I'll try to bring you back to the map you were before. "
		2699	. "Please report this to the dungeon master!",
		2700	cf::NDI_UNIQUE | cf::NDI_RED);
		2701
		2702	warn "ERROR in enter_exit: $@";
		2703	$self->leave_link;
		2704	}
		2705	})->prio (1);
		2706	}
		2707
		2708	=head3 cf::client
		2709
		2710	=over 4
		2711
		2712	=item $client->send_drawinfo ($text, $flags)
		2713
		2714	Sends a drawinfo packet to the client. Circumvents output buffering so
		2715	should not be used under normal circumstances.
		2716
		2717	=cut
		2718
		2719	sub cf::client::send_drawinfo {
		2720	my ($self, $text, $flags) = @_;
		2721
		2722	utf8::encode $text;
		2723	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2724	}
		2725
		2726	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2727
		2728	Send a drawinfo or msg packet to the client, formatting the msg for the
		2729	client if neccessary. C<$type> should be a string identifying the type of
		2730	the message, with C<log> being the default. If C<$color> is negative, suppress
		2731	the message unless the client supports the msg packet.
		2732
		2733	=cut
		2734
		2735	# non-persistent channels (usually the info channel)
		2736	our %CHANNEL = (
		2737	"c/identify" => {
		2738	id => "infobox",
		2739	title => "Identify",
		2740	reply => undef,
		2741	tooltip => "Items recently identified",
		2742	},
		2743	"c/examine" => {
		2744	id => "infobox",
		2745	title => "Examine",
		2746	reply => undef,
		2747	tooltip => "Signs and other items you examined",
		2748	},
		2749	"c/book" => {
		2750	id => "infobox",
		2751	title => "Book",
		2752	reply => undef,
		2753	tooltip => "The contents of a note or book",
		2754	},
		2755	"c/lookat" => {
		2756	id => "infobox",
		2757	title => "Look",
		2758	reply => undef,
		2759	tooltip => "What you saw there",
		2760	},
		2761	"c/who" => {
		2762	id => "infobox",
		2763	title => "Players",
		2764	reply => undef,
		2765	tooltip => "Shows players who are currently online",
		2766	},
		2767	"c/body" => {
		2768	id => "infobox",
		2769	title => "Body Parts",
		2770	reply => undef,
		2771	tooltip => "Shows which body parts you posess and are available",
		2772	},
		2773	"c/uptime" => {
		2774	id => "infobox",
		2775	title => "Uptime",
		2776	reply => undef,
		2777	tooltip => "How long the server has been running since last restart",
		2778	},
		2779	"c/mapinfo" => {
		2780	id => "infobox",
		2781	title => "Map Info",
		2782	reply => undef,
		2783	tooltip => "Information related to the maps",
		2784	},
		2785	"c/party" => {
		2786	id => "party",
		2787	title => "Party",
		2788	reply => "gsay ",
		2789	tooltip => "Messages and chat related to your party",
		2790	},
		2791	);
		2792
		2793	sub cf::client::send_msg {
		2794	my ($self, $channel, $msg, $color, @extra) = @_;
		2795
		2796	$msg = $self->pl->expand_cfpod ($msg)
		2797	unless $color & cf::NDI_VERBATIM;
		2798
		2799	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2800
		2801	# check predefined channels, for the benefit of C
		2802	if ($CHANNEL{$channel}) {
		2803	$channel = $CHANNEL{$channel};
		2804
		2805	$self->ext_msg (channel_info => $channel)
		2806	if $self->can_msg;
		2807
		2808	$channel = $channel->{id};
		2809
		2810	} elsif (ref $channel) {
		2811	# send meta info to client, if not yet sent
		2812	unless (exists $self->{channel}{$channel->{id}}) {
		2813	$self->{channel}{$channel->{id}} = $channel;
		2814	$self->ext_msg (channel_info => $channel)
		2815	if $self->can_msg;
		2816	}
		2817
		2818	$channel = $channel->{id};
		2819	}
		2820
		2821	return unless @extra || length $msg;
		2822
		2823	if ($self->can_msg) {
		2824	# default colour, mask it out
		2825	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2826	if $color & cf::NDI_DEF;
		2827
		2828	my $pkt = "msg "
		2829	. $self->{json_coder}->encode (
		2830	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2831	);
		2832
		2833	# try lzf for large packets
		2834	$pkt = "lzf " . Compress::LZF::compress $pkt
		2835	if 1024 <= length $pkt and $self->{can_lzf};
		2836
		2837	# split very large packets
		2838	if (8192 < length $pkt and $self->{can_lzf}) {
		2839	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2840	$pkt = "frag";
		2841	}
		2842
		2843	$self->send_packet ($pkt);
		2844	} else {
		2845	if ($color >= 0) {
		2846	# replace some tags by gcfclient-compatible ones
		2847	for ($msg) {
		2848	1 while
		2849	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2850	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2851	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2852	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2853	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2854	}
		2855
		2856	$color &= cf::NDI_COLOR_MASK;
		2857
		2858	utf8::encode $msg;
		2859
		2860	if (0 && $msg =~ /\[/) {
		2861	# COMMAND/INFO
		2862	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2863	} else {
		2864	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2865	$self->send_packet ("drawinfo $color $msg")
		2866	}
		2867	}
		2868	}
		2869	}
		2870
		2871	=item $client->ext_msg ($type, @msg)
		2872
		2873	Sends an ext event to the client.
		2874
		2875	=cut
		2876
		2877	sub cf::client::ext_msg($$@) {
		2878	my ($self, $type, @msg) = @_;
		2879
		2880	if ($self->extcmd == 2) {
		2881	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2882	} elsif ($self->extcmd == 1) { # TODO: remove
		2883	push @msg, msgtype => "event_$type";
		2884	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2885	}
		2886	}
		2887
790	=item $player->ext_reply ($msgid, $msgtype, %msg)	2888	=item $client->ext_reply ($msgid, @msg)
791		2889
792	Sends an ext reply to the player.	2890	Sends an ext reply to the client.
793		2891
794	=cut	2892	=cut
795		2893
796	sub cf::player::ext_reply($$$%) {	2894	sub cf::client::ext_reply($$@) {
797	my ($self, $id, %msg) = @_;	2895	my ($self, $id, @msg) = @_;
798		2896
799	$msg{msgid} = $id;	2897	if ($self->extcmd == 2) {
800		2898	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
801	$self->send ("ext " . to_json \%msg);	2899	} elsif ($self->extcmd == 1) {
		2900	#TODO: version 1, remove
		2901	unshift @msg, msgtype => "reply", msgid => $id;
		2902	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2903	}
802	}	2904	}
		2905
		2906	=item $success = $client->query ($flags, "text", \&cb)
		2907
		2908	Queues a query to the client, calling the given callback with
		2909	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2910	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2911
		2912	Queries can fail, so check the return code. Or don't, as queries will
		2913	become reliable at some point in the future.
		2914
		2915	=cut
		2916
		2917	sub cf::client::query {
		2918	my ($self, $flags, $text, $cb) = @_;
		2919
		2920	return unless $self->state == ST_PLAYING
		2921	|| $self->state == ST_SETUP
		2922	|| $self->state == ST_CUSTOM;
		2923
		2924	$self->state (ST_CUSTOM);
		2925
		2926	utf8::encode $text;
		2927	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2928
		2929	$self->send_packet ($self->{query_queue}[0][0])
		2930	if @{ $self->{query_queue} } == 1;
		2931
		2932	1
		2933	}
		2934
		2935	cf::client->attach (
		2936	on_connect => sub {
		2937	my ($ns) = @_;
		2938
		2939	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2940	},
		2941	on_reply => sub {
		2942	my ($ns, $msg) = @_;
		2943
		2944	# this weird shuffling is so that direct followup queries
		2945	# get handled first
		2946	my $queue = delete $ns->{query_queue}
		2947	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2948
		2949	(shift @$queue)->[1]->($msg);
		2950	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2951
		2952	push @{ $ns->{query_queue} }, @$queue;
		2953
		2954	if (@{ $ns->{query_queue} } == @$queue) {
		2955	if (@$queue) {
		2956	$ns->send_packet ($ns->{query_queue}[0][0]);
		2957	} else {
		2958	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2959	}
		2960	}
		2961	},
		2962	on_exticmd => sub {
		2963	my ($ns, $buf) = @_;
		2964
		2965	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2966
		2967	if (ref $msg) {
		2968	my ($type, $reply, @payload) =
		2969	"ARRAY" eq ref $msg
		2970	? @$msg
		2971	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2972
		2973	my @reply;
		2974
		2975	if (my $cb = $EXTICMD{$type}) {
		2976	@reply = $cb->($ns, @payload);
		2977	}
		2978
		2979	$ns->ext_reply ($reply, @reply)
		2980	if $reply;
		2981
		2982	} else {
		2983	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2984	}
		2985
		2986	cf::override;
		2987	},
		2988	);
		2989
		2990	=item $client->async (\&cb)
		2991
		2992	Create a new coroutine, running the specified callback. The coroutine will
		2993	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2994	or loss of connection).
		2995
		2996	=cut
		2997
		2998	sub cf::client::async {
		2999	my ($self, $cb) = @_;
		3000
		3001	my $coro = &Coro::async ($cb);
		3002
		3003	$coro->on_destroy (sub {
		3004	delete $self->{_coro}{$coro+0};
		3005	});
		3006
		3007	$self->{_coro}{$coro+0} = $coro;
		3008
		3009	$coro
		3010	}
		3011
		3012	cf::client->attach (
		3013	on_destroy => sub {
		3014	my ($ns) = @_;
		3015
		3016	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3017	},
		3018	);
803		3019
804	=back	3020	=back
805		3021
806	=cut
807
808	#############################################################################
809		3022
810	=head2 SAFE SCRIPTING	3023	=head2 SAFE SCRIPTING
811		3024
812	Functions that provide a safe environment to compile and execute	3025	Functions that provide a safe environment to compile and execute
813	snippets of perl code without them endangering the safety of the server	3026	snippets of perl code without them endangering the safety of the server
814	itself. Looping constructs, I/O operators and other built-in functionality	3027	itself. Looping constructs, I/O operators and other built-in functionality
815	is not available in the safe scripting environment, and the number of	3028	is not available in the safe scripting environment, and the number of
816	functions and methods that cna be called is greatly reduced.	3029	functions and methods that can be called is greatly reduced.
817		3030
818	=cut	3031	=cut
819		3032
820	our $safe = new Safe "safe";	3033	our $safe = new Safe "safe";
821	our $safe_hole = new Safe::Hole;	3034	our $safe_hole = new Safe::Hole;
822		3035
823	$SIG{FPE} = 'IGNORE';	3036	$SIG{FPE} = 'IGNORE';
824		3037
825	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3038	$safe->permit_only (Opcode::opset qw(
		3039	:base_core :base_mem :base_orig :base_math
		3040	grepstart grepwhile mapstart mapwhile
		3041	sort time
		3042	));
826		3043
827	# here we export the classes and methods available to script code	3044	# here we export the classes and methods available to script code
828		3045
829	=pod	3046	=pod
830		3047
831	The following fucntions and emthods are available within a safe environment:	3048	The following functions and methods are available within a safe environment:
832		3049
833	cf::object contr pay_amount pay_player	3050	cf::object
		3051	contr pay_amount pay_player map x y force_find force_add destroy
		3052	insert remove name archname title slaying race decrease split
		3053
834	cf::object::player player	3054	cf::object::player
835	cf::player peaceful	3055	player
		3056
		3057	cf::player
		3058	peaceful
		3059
		3060	cf::map
		3061	trigger
836		3062
837	=cut	3063	=cut
838		3064
839	for (	3065	for (
840	["cf::object" => qw(contr pay_amount pay_player)],	3066	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3067	insert remove inv nrof name archname title slaying race
		3068	decrease split destroy change_exp)],
841	["cf::object::player" => qw(player)],	3069	["cf::object::player" => qw(player)],
842	["cf::player" => qw(peaceful)],	3070	["cf::player" => qw(peaceful)],
		3071	["cf::map" => qw(trigger)],
843	) {	3072	) {
844	no strict 'refs';	3073	no strict 'refs';
845	my ($pkg, @funs) = @$_;	3074	my ($pkg, @funs) = @$_;
846	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3075	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
847	for @funs;	3076	for @funs;
…		…
912	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3141	*{"safe::$fun"} = $safe_hole->wrap ($cb);
913	}	3142	}
914		3143
915	=back	3144	=back
916		3145
		3146	=cut
		3147
917	#############################################################################	3148	#############################################################################
		3149	# the server's init and main functions
918		3150
919	=head2 EXTENSION DATABASE SUPPORT	3151	sub load_facedata($) {
		3152	my ($path) = @_;
920		3153
921	Crossfire maintains a very simple database for extension use. It can	3154	# HACK to clear player env face cache, we need some signal framework
922	currently store anything that can be serialised using Storable, which	3155	# for this (global event?)
923	excludes objects.	3156	%ext::player_env::MUSIC_FACE_CACHE = ();
924		3157
925	The parameter C<$family> should best start with the name of the extension	3158	my $enc = JSON::XS->new->utf8->canonical->relaxed;
926	using it, it should be unique.
927		3159
928	=over 4	3160	warn "loading facedata from $path\n";
929		3161
930	=item $hashref = cf::db_get $family	3162	my $facedata;
		3163	0 < aio_load $path, $facedata
		3164	or die "$path: $!";
931		3165
932	Return a hashref for use by the extension C<$family>, which can be	3166	$facedata = Coro::Storable::thaw $facedata;
933	modified. After modifications, you have to call C<cf::db_dirty> or
934	C<cf::db_sync>.
935		3167
936	=item $value = cf::db_get $family => $key	3168	$facedata->{version} == 2
		3169	or cf::cleanup "$path: version mismatch, cannot proceed.";
937		3170
938	Returns a single value from the database	3171	# patch in the exptable
		3172	$facedata->{resource}{"res/exp_table"} = {
		3173	type => FT_RSRC,
		3174	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3175	};
		3176	cf::cede_to_tick;
939		3177
940	=item cf::db_put $family => $hashref	3178	{
		3179	my $faces = $facedata->{faceinfo};
941		3180
942	Stores the given family hashref into the database. Updates are delayed, if	3181	while (my ($face, $info) = each %$faces) {
943	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3182	my $idx = (cf::face::find $face) || cf::face::alloc $face;
944		3183
945	=item cf::db_put $family => $key => $value	3184	cf::face::set_visibility $idx, $info->{visibility};
		3185	cf::face::set_magicmap $idx, $info->{magicmap};
		3186	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3187	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
946		3188
947	Stores the given C<$value> in the family hash. Updates are delayed, if you	3189	cf::cede_to_tick;
948	want the data to be synced to disk immediately, use C<cf::db_sync>.	3190	}
949		3191
950	=item cf::db_dirty	3192	while (my ($face, $info) = each %$faces) {
		3193	next unless $info->{smooth};
951		3194
952	Marks the database as dirty, to be updated at a later time.	3195	my $idx = cf::face::find $face
		3196	or next;
953		3197
954	=item cf::db_sync	3198	if (my $smooth = cf::face::find $info->{smooth}) {
		3199	cf::face::set_smooth $idx, $smooth;
		3200	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3201	} else {
		3202	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3203	}
955		3204
956	Immediately write the database to disk I<if it is dirty>.	3205	cf::cede_to_tick;
		3206	}
		3207	}
957		3208
958	=cut	3209	{
		3210	my $anims = $facedata->{animinfo};
		3211
		3212	while (my ($anim, $info) = each %$anims) {
		3213	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3214	cf::cede_to_tick;
		3215	}
		3216
		3217	cf::anim::invalidate_all; # d'oh
		3218	}
		3219
		3220	{
		3221	# TODO: for gcfclient pleasure, we should give resources
		3222	# that gcfclient doesn't grok a >10000 face index.
		3223	my $res = $facedata->{resource};
		3224
		3225	while (my ($name, $info) = each %$res) {
		3226	if (defined $info->{type}) {
		3227	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3228	my $data;
		3229
		3230	if ($info->{type} & 1) {
		3231	# prepend meta info
		3232
		3233	my $meta = $enc->encode ({
		3234	name => $name,
		3235	%{ $info->{meta} || {} },
		3236	});
		3237
		3238	$data = pack "(w/a*)*", $meta, $info->{data};
		3239	} else {
		3240	$data = $info->{data};
		3241	}
		3242
		3243	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3244	cf::face::set_type $idx, $info->{type};
		3245	} else {
		3246	$RESOURCE{$name} = $info;
		3247	}
		3248
		3249	cf::cede_to_tick;
		3250	}
		3251	}
		3252
		3253	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3254
		3255	1
		3256	}
		3257
		3258	cf::global->attach (on_resource_update => sub {
		3259	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3260	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3261
		3262	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3263	my $sound = $soundconf->{compat}[$_]
		3264	or next;
		3265
		3266	my $face = cf::face::find "sound/$sound->[1]";
		3267	cf::sound::set $sound->[0] => $face;
		3268	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3269	}
		3270
		3271	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3272	my $face = cf::face::find "sound/$v";
		3273	cf::sound::set $k => $face;
		3274	}
		3275	}
		3276	});
		3277
		3278	register_exticmd fx_want => sub {
		3279	my ($ns, $want) = @_;
		3280
		3281	while (my ($k, $v) = each %$want) {
		3282	$ns->fx_want ($k, $v);
		3283	}
		3284	};
		3285
		3286	sub load_resource_file($) {
		3287	my $guard = lock_acquire "load_resource_file";
		3288
		3289	my $status = load_resource_file_ $_[0];
		3290	get_slot 0.1, 100;
		3291	cf::arch::commit_load;
		3292
		3293	$status
		3294	}
		3295
		3296	sub reload_regions {
		3297	# HACK to clear player env face cache, we need some signal framework
		3298	# for this (global event?)
		3299	%ext::player_env::MUSIC_FACE_CACHE = ();
		3300
		3301	load_resource_file "$MAPDIR/regions"
		3302	or die "unable to load regions file\n";
		3303
		3304	for (cf::region::list) {
		3305	$_->{match} = qr/$_->{match}/
		3306	if exists $_->{match};
		3307	}
		3308	}
		3309
		3310	sub reload_facedata {
		3311	load_facedata "$DATADIR/facedata"
		3312	or die "unable to load facedata\n";
		3313	}
		3314
		3315	sub reload_archetypes {
		3316	load_resource_file "$DATADIR/archetypes"
		3317	or die "unable to load archetypes\n";
		3318	}
		3319
		3320	sub reload_treasures {
		3321	load_resource_file "$DATADIR/treasures"
		3322	or die "unable to load treasurelists\n";
		3323	}
		3324
		3325	sub reload_resources {
		3326	warn "reloading resource files...\n";
		3327
		3328	reload_facedata;
		3329	reload_archetypes;
		3330	reload_regions;
		3331	reload_treasures;
		3332
		3333	warn "finished reloading resource files\n";
		3334	}
		3335
		3336	sub init {
		3337	my $guard = freeze_mainloop;
		3338
		3339	evthread_start IO::AIO::poll_fileno;
		3340
		3341	reload_resources;
		3342	}
		3343
		3344	sub reload_config {
		3345	open my $fh, "<:utf8", "$CONFDIR/config"
		3346	or return;
		3347
		3348	local $/;
		3349	*CFG = YAML::Load <$fh>;
		3350
		3351	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3352
		3353	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3354	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3355
		3356	if (exists $CFG{mlockall}) {
		3357	eval {
		3358	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3359	and die "WARNING: m(un)lockall failed: $!\n";
		3360	};
		3361	warn $@ if $@;
		3362	}
		3363	}
		3364
		3365	sub pidfile() {
		3366	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3367	or die "$PIDFILE: $!";
		3368	flock $fh, &Fcntl::LOCK_EX
		3369	or die "$PIDFILE: flock: $!";
		3370	$fh
		3371	}
		3372
		3373	# make sure only one server instance is running at any one time
		3374	sub atomic {
		3375	my $fh = pidfile;
		3376
		3377	my $pid = <$fh>;
		3378	kill 9, $pid if $pid > 0;
		3379
		3380	seek $fh, 0, 0;
		3381	print $fh $$;
		3382	}
		3383
		3384	sub main {
		3385	atomic;
		3386
		3387	# we must not ever block the main coroutine
		3388	local $Coro::idle = sub {
		3389	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3390	(async {
		3391	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3392	EV::loop EV::LOOP_ONESHOT;
		3393	})->prio (Coro::PRIO_MAX);
		3394	};
		3395
		3396	{
		3397	my $guard = freeze_mainloop;
		3398	reload_config;
		3399	db_init;
		3400	load_extensions;
		3401
		3402	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3403	}
		3404
		3405	utime time, time, $RUNTIMEFILE;
		3406
		3407	# no (long-running) fork's whatsoever before this point(!)
		3408	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3409
		3410	EV::loop;
		3411	}
		3412
		3413	#############################################################################
		3414	# initialisation and cleanup
		3415
		3416	# install some emergency cleanup handlers
		3417	BEGIN {
		3418	our %SIGWATCHER = ();
		3419	for my $signal (qw(INT HUP TERM)) {
		3420	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3421	cf::cleanup "SIG$signal";
		3422	};
		3423	}
		3424	}
		3425
		3426	sub write_runtime_sync {
		3427	# first touch the runtime file to show we are still running:
		3428	# the fsync below can take a very very long time.
		3429
		3430	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3431
		3432	my $guard = cf::lock_acquire "write_runtime";
		3433
		3434	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3435	or return;
		3436
		3437	my $value = $cf::RUNTIME + 90 + 10;
		3438	# 10 is the runtime save interval, for a monotonic clock
		3439	# 60 allows for the watchdog to kill the server.
		3440
		3441	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3442	and return;
		3443
		3444	# always fsync - this file is important
		3445	aio_fsync $fh
		3446	and return;
		3447
		3448	# touch it again to show we are up-to-date
		3449	aio_utime $fh, undef, undef;
		3450
		3451	close $fh
		3452	or return;
		3453
		3454	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3455	and return;
		3456
		3457	warn "runtime file written.\n";
		3458
		3459	1
		3460	}
		3461
		3462	our $uuid_lock;
		3463	our $uuid_skip;
		3464
		3465	sub write_uuid_sync($) {
		3466	$uuid_skip ||= $_[0];
		3467
		3468	return if $uuid_lock;
		3469	local $uuid_lock = 1;
		3470
		3471	my $uuid = "$LOCALDIR/uuid";
		3472
		3473	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3474	or return;
		3475
		3476	my $value = uuid_str $uuid_skip + uuid_seq uuid_cur;
		3477	$uuid_skip = 0;
		3478
		3479	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3480	and return;
		3481
		3482	# always fsync - this file is important
		3483	aio_fsync $fh
		3484	and return;
		3485
		3486	close $fh
		3487	or return;
		3488
		3489	aio_rename "$uuid~", $uuid
		3490	and return;
		3491
		3492	warn "uuid file written ($value).\n";
		3493
		3494	1
		3495
		3496	}
		3497
		3498	sub write_uuid($$) {
		3499	my ($skip, $sync) = @_;
		3500
		3501	$sync ? write_uuid_sync $skip
		3502	: async { write_uuid_sync $skip };
		3503	}
		3504
		3505	sub emergency_save() {
		3506	my $freeze_guard = cf::freeze_mainloop;
		3507
		3508	warn "enter emergency perl save\n";
		3509
		3510	cf::sync_job {
		3511	# use a peculiar iteration method to avoid tripping on perl
		3512	# refcount bugs in for. also avoids problems with players
		3513	# and maps saved/destroyed asynchronously.
		3514	warn "begin emergency player save\n";
		3515	for my $login (keys %cf::PLAYER) {
		3516	my $pl = $cf::PLAYER{$login} or next;
		3517	$pl->valid or next;
		3518	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3519	$pl->save;
		3520	}
		3521	warn "end emergency player save\n";
		3522
		3523	warn "begin emergency map save\n";
		3524	for my $path (keys %cf::MAP) {
		3525	my $map = $cf::MAP{$path} or next;
		3526	$map->valid or next;
		3527	$map->save;
		3528	}
		3529	warn "end emergency map save\n";
		3530
		3531	warn "begin emergency database checkpoint\n";
		3532	BDB::db_env_txn_checkpoint $DB_ENV;
		3533	warn "end emergency database checkpoint\n";
		3534
		3535	warn "begin write uuid\n";
		3536	write_uuid_sync 1;
		3537	warn "end write uuid\n";
		3538	};
		3539
		3540	warn "leave emergency perl save\n";
		3541	}
		3542
		3543	sub post_cleanup {
		3544	my ($make_core) = @_;
		3545
		3546	warn Carp::longmess "post_cleanup backtrace"
		3547	if $make_core;
		3548
		3549	my $fh = pidfile;
		3550	unlink $PIDFILE if <$fh> == $$;
		3551	}
		3552
		3553	# a safer delete_package, copied from Symbol
		3554	sub clear_package($) {
		3555	my $pkg = shift;
		3556
		3557	# expand to full symbol table name if needed
		3558	unless ($pkg =~ /^main::.*::$/) {
		3559	$pkg = "main$pkg" if $pkg =~ /^::/;
		3560	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3561	$pkg .= '::' unless $pkg =~ /::$/;
		3562	}
		3563
		3564	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3565	my $stem_symtab = *{$stem}{HASH};
		3566
		3567	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3568	or return;
		3569
		3570	# clear all symbols
		3571	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3572	for my $name (keys %$leaf_symtab) {
		3573	_gv_clear *{"$pkg$name"};
		3574	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3575	}
		3576	warn "cleared package #$pkg\n";#d#
		3577	}
		3578
		3579	our $RELOAD; # how many times to reload
		3580
		3581	sub do_reload_perl() {
		3582	# can/must only be called in main
		3583	if ($Coro::current != $Coro::main) {
		3584	warn "can only reload from main coroutine";
		3585	return;
		3586	}
		3587
		3588	return if $RELOAD++;
		3589
		3590	while ($RELOAD) {
		3591	warn "reloading...";
		3592
		3593	warn "entering sync_job";
		3594
		3595	cf::sync_job {
		3596	cf::write_runtime_sync; # external watchdog should not bark
		3597	cf::emergency_save;
		3598	cf::write_runtime_sync; # external watchdog should not bark
		3599
		3600	warn "syncing database to disk";
		3601	BDB::db_env_txn_checkpoint $DB_ENV;
		3602
		3603	# if anything goes wrong in here, we should simply crash as we already saved
		3604
		3605	warn "flushing outstanding aio requests";
		3606	while (IO::AIO::nreqs || BDB::nreqs) {
		3607	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3608	}
		3609
		3610	warn "cancelling all extension coros";
		3611	$_->cancel for values %EXT_CORO;
		3612	%EXT_CORO = ();
		3613
		3614	warn "removing commands";
		3615	%COMMAND = ();
		3616
		3617	warn "removing ext/exti commands";
		3618	%EXTCMD = ();
		3619	%EXTICMD = ();
		3620
		3621	warn "unloading/nuking all extensions";
		3622	for my $pkg (@EXTS) {
		3623	warn "... unloading $pkg";
		3624
		3625	if (my $cb = $pkg->can ("unload")) {
		3626	eval {
		3627	$cb->($pkg);
		3628	1
		3629	} or warn "$pkg unloaded, but with errors: $@";
		3630	}
		3631
		3632	warn "... clearing $pkg";
		3633	clear_package $pkg;
		3634	}
		3635
		3636	warn "unloading all perl modules loaded from $LIBDIR";
		3637	while (my ($k, $v) = each %INC) {
		3638	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3639
		3640	warn "... unloading $k";
		3641	delete $INC{$k};
		3642
		3643	$k =~ s/\.pm$//;
		3644	$k =~ s/\//::/g;
		3645
		3646	if (my $cb = $k->can ("unload_module")) {
		3647	$cb->();
		3648	}
		3649
		3650	clear_package $k;
		3651	}
		3652
		3653	warn "getting rid of safe::, as good as possible";
		3654	clear_package "safe::$_"
		3655	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3656
		3657	warn "unloading cf.pm \"a bit\"";
		3658	delete $INC{"cf.pm"};
		3659	delete $INC{"cf/pod.pm"};
		3660
		3661	# don't, removes xs symbols, too,
		3662	# and global variables created in xs
		3663	#clear_package __PACKAGE__;
		3664
		3665	warn "unload completed, starting to reload now";
		3666
		3667	warn "reloading cf.pm";
		3668	require cf;
		3669	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3670
		3671	warn "loading config and database again";
		3672	cf::reload_config;
		3673
		3674	warn "loading extensions";
		3675	cf::load_extensions;
		3676
		3677	warn "reattaching attachments to objects/players";
		3678	_global_reattach; # objects, sockets
		3679	warn "reattaching attachments to maps";
		3680	reattach $_ for values %MAP;
		3681	warn "reattaching attachments to players";
		3682	reattach $_ for values %PLAYER;
		3683
		3684	warn "leaving sync_job";
		3685
		3686	1
		3687	} or do {
		3688	warn $@;
		3689	cf::cleanup "error while reloading, exiting.";
		3690	};
		3691
		3692	warn "reloaded";
		3693	--$RELOAD;
		3694	}
		3695	};
		3696
		3697	our $RELOAD_WATCHER; # used only during reload
		3698
		3699	sub reload_perl() {
		3700	# doing reload synchronously and two reloads happen back-to-back,
		3701	# coro crashes during coro_state_free->destroy here.
		3702
		3703	$RELOAD_WATCHER ||= EV::timer 0, 0, sub {
		3704	do_reload_perl;
		3705	undef $RELOAD_WATCHER;
		3706	};
		3707	}
		3708
		3709	register_command "reload" => sub {
		3710	my ($who, $arg) = @_;
		3711
		3712	if ($who->flag (FLAG_WIZ)) {
		3713	$who->message ("reloading server.");
		3714	async {
		3715	$Coro::current->{desc} = "perl_reload";
		3716	reload_perl;
		3717	};
		3718	}
		3719	};
		3720
		3721	unshift @INC, $LIBDIR;
		3722
		3723	my $bug_warning = 0;
		3724
		3725	our @WAIT_FOR_TICK;
		3726	our @WAIT_FOR_TICK_BEGIN;
		3727
		3728	sub wait_for_tick {
		3729	return if tick_inhibit || $Coro::current == $Coro::main;
		3730
		3731	my $signal = new Coro::Signal;
		3732	push @WAIT_FOR_TICK, $signal;
		3733	$signal->wait;
		3734	}
		3735
		3736	sub wait_for_tick_begin {
		3737	return if tick_inhibit || $Coro::current == $Coro::main;
		3738
		3739	my $signal = new Coro::Signal;
		3740	push @WAIT_FOR_TICK_BEGIN, $signal;
		3741	$signal->wait;
		3742	}
		3743
		3744	sub tick {
		3745	if ($Coro::current != $Coro::main) {
		3746	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3747	unless ++$bug_warning > 10;
		3748	return;
		3749	}
		3750
		3751	cf::server_tick; # one server iteration
		3752
		3753	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3754	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3755	Coro::async_pool {
		3756	$Coro::current->{desc} = "runtime saver";
		3757	write_runtime_sync
		3758	or warn "ERROR: unable to write runtime file: $!";
		3759	};
		3760	}
		3761
		3762	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3763	$sig->send;
		3764	}
		3765	while (my $sig = shift @WAIT_FOR_TICK) {
		3766	$sig->send;
		3767	}
		3768
		3769	$LOAD = ($NOW - $TICK_START) / $TICK;
		3770	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3771
		3772	if (0) {
		3773	if ($NEXT_TICK) {
		3774	my $jitter = $TICK_START - $NEXT_TICK;
		3775	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3776	warn "jitter $JITTER\n";#d#
		3777	}
		3778	}
		3779	}
959		3780
960	{	3781	{
961	my $db;	3782	# configure BDB
962	my $path = cf::localdir . "/database.pst";
963		3783
964	sub db_load() {	3784	BDB::min_parallel 8;
965	warn "loading database $path\n";#d# remove later	3785	BDB::max_poll_reqs $TICK * 0.1;
966	$db = stat $path ? Storable::retrieve $path : { };	3786	$AnyEvent::BDB::WATCHER->priority (1);
967	}
968		3787
969	my $pid;	3788	unless ($DB_ENV) {
		3789	$DB_ENV = BDB::db_env_create;
		3790	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3791	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3792	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3793	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3794	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
970		3795
971	sub db_save() {	3796	cf::sync_job {
972	warn "saving database $path\n";#d# remove later
973	waitpid $pid, 0 if $pid;
974	if (0 == ($pid = fork)) {
975	$db->{_meta}{version} = 1;
976	Storable::nstore $db, "$path~";
977	rename "$path~", $path;
978	cf::_exit 0 if defined $pid;
979	}
980	}
981
982	my $dirty;
983
984	sub db_sync() {
985	db_save if $dirty;
986	undef $dirty;
987	}
988
989	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
990	db_sync;
991	});
992
993	sub db_dirty() {
994	$dirty = 1;
995	$idle->start;
996	}
997
998	sub db_get($;$) {
999	@_ >= 2
1000	? $db->{$_[0]}{$_[1]}
1001	: ($db->{$_[0]} ||= { })
1002	}
1003
1004	sub db_put($$;$) {
1005	if (@_ >= 3) {
1006	$db->{$_[0]}{$_[1]} = $_[2];
1007	} else {	3797	eval {
1008	$db->{$_[0]} = $_[1];	3798	BDB::db_env_open
1009	}	3799	$DB_ENV,
1010	db_dirty;	3800	$BDBDIR,
1011	}	3801	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3802	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3803	0666;
1012		3804
1013	attach_global	3805	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1014	prio => 10000,
1015	on_cleanup => sub {
1016	db_sync;
1017	},
1018	;
1019	}
1020
1021	#############################################################################
1022	# the server's main()
1023
1024	sub main {
1025	db_load;
1026	load_extensions;
1027	Event::loop;
1028	}
1029
1030	#############################################################################
1031	# initialisation
1032
1033	sub _perl_reload(&) {
1034	my ($msg) = @_;
1035
1036	$msg->("reloading...");
1037
1038	eval {
1039	# cancel all watchers
1040	$_->cancel for Event::all_watchers;
1041
1042	# unload all extensions
1043	for (@exts) {
1044	$msg->("unloading <$_>");
1045	unload_extension $_;
1046	}
1047
1048	# unload all modules loaded from $LIBDIR
1049	while (my ($k, $v) = each %INC) {
1050	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1051
1052	$msg->("removing <$k>");
1053	delete $INC{$k};
1054
1055	$k =~ s/\.pm$//;
1056	$k =~ s/\//::/g;
1057
1058	if (my $cb = $k->can ("unload_module")) {
1059	$cb->();
1060	}	3806	};
1061		3807
1062	Symbol::delete_package $k;	3808	cf::cleanup "db_env_open(db): $@" if $@;
1063	}	3809	};
		3810	}
1064		3811
1065	# sync database to disk	3812	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1066	cf::db_sync;	3813	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1067
1068	# get rid of safe::, as good as possible
1069	Symbol::delete_package "safe::$_"
1070	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1071
1072	# remove register_script_function callbacks
1073	# TODO
1074
1075	# unload cf.pm "a bit"
1076	delete $INC{"cf.pm"};
1077
1078	# don't, removes xs symbols, too,
1079	# and global variables created in xs
1080	#Symbol::delete_package __PACKAGE__;
1081
1082	# reload cf.pm
1083	$msg->("reloading cf.pm");
1084	require cf;
1085
1086	# load database again
1087	cf::db_load;
1088
1089	# load extensions
1090	$msg->("load extensions");
1091	cf::load_extensions;
1092
1093	# reattach attachments to objects
1094	$msg->("reattach");
1095	_global_reattach;
1096	};	3814	};
1097	$msg->($@) if $@;	3815	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1098		3816	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1099	$msg->("reloaded");
1100	};
1101
1102	sub perl_reload() {
1103	_perl_reload {
1104	warn $_[0];
1105	print "$_[0]\n";
1106	};	3817	};
		3818	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3819	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3820	};
1107	}	3821	}
1108		3822
1109	register_command "perl-reload", 0, sub {	3823	{
		3824	# configure IO::AIO
		3825
		3826	IO::AIO::min_parallel 8;
		3827	IO::AIO::max_poll_time $TICK * 0.1;
		3828	undef $AnyEvent::AIO::WATCHER;
		3829	}
		3830
		3831	my $_log_backtrace;
		3832
		3833	sub _log_backtrace {
1110	my ($who, $arg) = @_;	3834	my ($msg, @addr) = @_;
1111		3835
1112	if ($who->flag (FLAG_WIZ)) {	3836	$msg =~ s/\n//;
1113	_perl_reload {	3837
1114	warn $_[0];	3838	# limit the # of concurrent backtraces
1115	$who->message ($_[0]);	3839	if ($_log_backtrace < 2) {
		3840	++$_log_backtrace;
		3841	my $perl_bt = Carp::longmess $msg;
		3842	async {
		3843	$Coro::current->{desc} = "abt $msg";
		3844
		3845	my @bt = fork_call {
		3846	@addr = map { sprintf "%x", $_ } @addr;
		3847	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3848	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3849	or die "addr2line: $!";
		3850
		3851	my @funcs;
		3852	my @res = <$fh>;
		3853	chomp for @res;
		3854	while (@res) {
		3855	my ($func, $line) = splice @res, 0, 2, ();
		3856	push @funcs, "[$func] $line";
		3857	}
		3858
		3859	@funcs
		3860	};
		3861
		3862	LOG llevInfo, "[ABT] $perl_bt\n";
		3863	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3864	LOG llevInfo, "[ABT] $_\n" for @bt;
		3865	--$_log_backtrace;
1116	};	3866	};
1117	}	3867	} else {
1118	};	3868	LOG llevInfo, "[ABT] $msg\n";
1119		3869	LOG llevInfo, "[ABT] [suppressed]\n";
1120	register "<global>", __PACKAGE__;
1121
1122	unshift @INC, $LIBDIR;
1123
1124	$TICK_WATCHER = Event->timer (
1125	prio => 1,
1126	at => $NEXT_TICK || 1,
1127	cb => sub {
1128	cf::server_tick; # one server iteration
1129
1130	my $NOW = Event::time;
1131	$NEXT_TICK += $TICK;
1132
1133	# if we are delayed by four ticks, skip them all
1134	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1135
1136	$TICK_WATCHER->at ($NEXT_TICK);
1137	$TICK_WATCHER->start;
1138	},	3870	}
1139	);	3871	}
		3872
		3873	# load additional modules
		3874	use cf::pod;
		3875
		3876	END { cf::emergency_save }
1140		3877
1141	1	3878	1
1142		3879

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