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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.584 by root, Tue Oct 30 17:07:50 2012 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
		24
		25	use common::sense;
2		26
3	use Symbol;	27	use Symbol;
4	use List::Util;	28	use List::Util;
5	use Storable;	29	use Socket;
		30	use EV;
6	use Opcode;	31	use Opcode;
7	use Safe;	32	use Safe;
8	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
9		36
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Fcntl;
		57	use YAML::XS ();
10	use IO::AIO ();	58	use IO::AIO ();
11	use YAML::Syck ();
12	use Time::HiRes;	59	use Time::HiRes;
13	use Event;	60	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
15		62
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	63	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		64
19	use strict;	65	# configure various modules to our taste
		66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
20		69
21	_init_vars;	70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
22		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
		82
23	our %COMMAND = ();	83	our %COMMAND = ();
		84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
		87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
24	our @EVENT;	93	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
26		96
27	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
28	our $TICK_WATCHER;	98
		99	our $DATADIR = datadir;
		100	our $LIBDIR = "$DATADIR/ext";
		101	our $PODDIR = "$DATADIR/pod";
		102	our $MAPDIR = "$DATADIR/" . mapdir;
		103
		104	our $LOCALDIR = localdir;
		105	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		106	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		107	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		108	our $RANDOMDIR = "$LOCALDIR/random";
		109	our $BDBDIR = "$LOCALDIR/db";
		110	our $PIDFILE = "$LOCALDIR/pid";
		111	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		112
		113	#our %RESOURCE; # unused
		114
		115	our $OUTPUT_RATE_MIN = 3000;
		116	our $OUTPUT_RATE_MAX = 1000000;
		117
		118	our $MAX_LINKS = 32; # how many chained exits to follow
		119	our $VERBOSE_IO = 1;
		120
		121	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		122	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
29	our $NEXT_TICK;	123	our $NEXT_TICK;
		124	our $USE_FSYNC = 1; # use fsync to write maps - default on
		125
		126	our $BDB_DEADLOCK_WATCHER;
		127	our $BDB_CHECKPOINT_WATCHER;
		128	our $BDB_TRICKLE_WATCHER;
		129	our $DB_ENV;
		130
		131	our @EXTRA_MODULES = qw(pod match mapscript incloader);
30		132
31	our %CFG;	133	our %CFG;
		134	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
32		135
33	our $uptime;#d#	136	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	137	our $RUNTIME = 0;
35	$UPTIME ||= $uptime;#d#	138	our $SERVER_TICK = 0;
36	$UPTIME ||= time;	139	our $NOW;
		140
		141	our (%PLAYER, %PLAYER_LOADING); # all users
		142	our (%MAP, %MAP_LOADING ); # all maps
		143	our $LINK_MAP; # the special {link} map, which is always available
		144
		145	# used to convert map paths into valid unix filenames by replacing / by ∕
		146	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		147
		148	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		149	our $LOADAVG; # same thing, but with alpha-smoothing
		150	our $JITTER; # average jitter
		151	our $TICK_START; # for load detecting purposes
		152
		153	our @POST_INIT;
		154
		155	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		156	our $REALLY_UNLOOP; # never set to true, please :)
		157
		158	our $WAIT_FOR_TICK = new Coro::Signal;
		159	our @WAIT_FOR_TICK_BEGIN;
		160
		161	binmode STDOUT;
		162	binmode STDERR;
		163
		164	# read virtual server time, if available
		165	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		166	open my $fh, "<", $RUNTIMEFILE
		167	or die "unable to read $RUNTIMEFILE file: $!";
		168	$RUNTIME = <$fh> + 0.;
		169	}
		170
		171	eval "sub TICK() { $TICK } 1" or die;
		172
		173	mkdir $_
		174	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		175
		176	our $EMERGENCY_POSITION;
		177
		178	sub cf::map::normalise;
		179
		180	sub in_main() {
		181	$Coro::current == $Coro::main
		182	}
37		183
38	#############################################################################	184	#############################################################################
39		185
		186	%REFLECT = ();
		187	for (@REFLECT) {
		188	my $reflect = JSON::XS::decode_json $_;
		189	$REFLECT{$reflect->{class}} = $reflect;
		190	}
		191
		192	# this is decidedly evil
		193	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		194
		195	#############################################################################
		196
40	=head2 GLOBAL VARIABLES	197	=head2 GLOBAL VARIABLES
41		198
42	=over 4	199	=over 4
43		200
44	=item $cf::UPTIME	201	=item $cf::UPTIME
45		202
46	The timestamp of the server start (so not actually an uptime).	203	The timestamp of the server start (so not actually an "uptime").
47		204
48	=item $cf::LIBDIR	205	=item $cf::SERVER_TICK
49		206
50	The perl library directory, where extensions and cf-specific modules can	207	An unsigned integer that starts at zero when the server is started and is
51	be found. It will be added to C<@INC> automatically.	208	incremented on every tick.
		209
		210	=item $cf::NOW
		211
		212	The (real) time of the last (current) server tick - updated before and
		213	after tick processing, so this is useful only as a rough "what time is it
		214	now" estimate.
52		215
53	=item $cf::TICK	216	=item $cf::TICK
54		217
55	The interval between server ticks, in seconds.	218	The interval between each server tick, in seconds.
		219
		220	=item $cf::RUNTIME
		221
		222	The time this server has run, starts at 0 and is increased by $cf::TICK on
		223	every server tick.
		224
		225	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		226	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		227	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		228
		229	Various directories - "/etc", read-only install directory, perl-library
		230	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		231	unique-items directory, player file directory, random maps directory and
		232	database environment.
		233
		234	=item $cf::LOADAVG
		235
		236	The current CPU load on the server (alpha-smoothed), as a value between 0
		237	(none) and 1 (overloaded), indicating how much time is spent on processing
		238	objects per tick. Healthy values are < 0.5.
		239
		240	=item $cf::LOAD
		241
		242	The raw value load value from the last tick.
56		243
57	=item %cf::CFG	244	=item %cf::CFG
58		245
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	246	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
60	from wherever your confdir points to.	247	from wherever your confdir points to.
61		248
		249	=item cf::wait_for_tick, cf::wait_for_tick_begin
		250
		251	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		252	returns directly I<after> the tick processing (and consequently, can only wake one thread
		253	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		254
		255	Note that cf::Wait_for_tick will immediately return when the server is not
		256	ticking, making it suitable for small pauses in threads that need to run
		257	when the server is paused. If that is not applicable (i.e. you I<really>
		258	want to wait, use C<$cf::WAIT_FOR_TICK>).
		259
		260	=item $cf::WAIT_FOR_TICK
		261
		262	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		263	variable contains a L<Coro::Signal> that is broadcats after every server
		264	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		265	next server tick.
		266
		267	=cut
		268
		269	sub wait_for_tick();
		270	sub wait_for_tick_begin();
		271
		272	=item @cf::INVOKE_RESULTS
		273
		274	This array contains the results of the last C<invoke ()> call. When
		275	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		276	that call.
		277
		278	=item %cf::REFLECT
		279
		280	Contains, for each (C++) class name, a hash reference with information
		281	about object members (methods, scalars, arrays and flags) and other
		282	metadata, which is useful for introspection.
		283
62	=back	284	=back
63		285
64	=cut	286	=cut
65		287
66	BEGIN {	288	sub error(@) { LOG llevError, join "", @_ }
67	*CORE::GLOBAL::warn = sub {	289	sub warn (@) { LOG llevWarn , join "", @_ }
		290	sub info (@) { LOG llevInfo , join "", @_ }
		291	sub debug(@) { LOG llevDebug, join "", @_ }
		292	sub trace(@) { LOG llevTrace, join "", @_ }
		293
		294	$Coro::State::WARNHOOK = sub {
68	my $msg = join "", @_;	295	my $msg = join "", @_;
		296
69	$msg .= "\n"	297	$msg .= "\n"
70	unless $msg =~ /\n$/;	298	unless $msg =~ /\n$/;
71		299
72	print STDERR "cfperl: $msg";	300	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
73	LOG llevError, "cfperl: $msg";
74	};
75	}
76		301
		302	LOG llevWarn, $msg;
		303	};
		304
		305	$Coro::State::DIEHOOK = sub {
		306	return unless $^S eq 0; # "eq", not "=="
		307
		308	error Carp::longmess $_[0];
		309
		310	if (in_main) {#d#
		311	error "DIEHOOK called in main context, Coro bug?\n";#d#
		312	return;#d#
		313	}#d#
		314
		315	# kill coroutine otherwise
		316	Coro::terminate
		317	};
		318
		319	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		320	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		321	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		322	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		323	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		324	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	325	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
78		326
79	# we bless all objects into (empty) derived classes to force a method lookup	327	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	328	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	329	for my $pkg (qw(
82	no strict 'refs';	330	cf::global cf::attachable
		331	cf::object cf::object::player
		332	cf::client cf::player
		333	cf::arch cf::living
		334	cf::map cf::mapspace
		335	cf::party cf::region
		336	)) {
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	337	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	338	}
85		339
86	$Event::DIED = sub {	340	$EV::DIED = sub {
87	warn "error in event callback: @_";	341	Carp::cluck "error in event callback: @_";
88	};	342	};
89		343
90	my %ext_pkg;	344	#############################################################################
91	my @exts;	345
92	my @hook;	346	sub fork_call(&@);
93	my %command;	347	sub get_slot($;$$);
94	my %extcmd;	348
		349	#############################################################################
95		350
96	=head2 UTILITY FUNCTIONS	351	=head2 UTILITY FUNCTIONS
97		352
98	=over 4	353	=over 4
99		354
100	=cut	355	=item dumpval $ref
101		356
102	use JSON::Syck (); # TODO# replace by JSON::PC once working	357	=cut
103		358
		359	sub dumpval {
		360	eval {
		361	local $SIG{__DIE__};
		362	my $d;
		363	if (1) {
		364	$d = new Data::Dumper([$_[0]], ["*var"]);
		365	$d->Terse(1);
		366	$d->Indent(2);
		367	$d->Quotekeys(0);
		368	$d->Useqq(1);
		369	#$d->Bless(...);
		370	$d->Seen($_[1]) if @_ > 1;
		371	$d = $d->Dump();
		372	}
		373	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		374	$d
		375	} || "[unable to dump $_[0]: '$@']";
		376	}
		377
		378	=item $scalar = cf::load_file $path
		379
		380	Loads the given file from path and returns its contents. Croaks on error
		381	and can block.
		382
		383	=cut
		384
		385	sub load_file($) {
		386	0 <= aio_load $_[0], my $data
		387	or Carp::croak "$_[0]: $!";
		388
		389	$data
		390	}
		391
		392	=item $success = cf::replace_file $path, $data, $sync
		393
		394	Atomically replaces the file at the given $path with new $data, and
		395	optionally $sync the data to disk before replacing the file.
		396
		397	=cut
		398
		399	sub replace_file($$;$) {
		400	my ($path, $data, $sync) = @_;
		401
		402	my $lock = cf::lock_acquire ("replace_file:$path");
		403
		404	my $fh = aio_open "$path~", Fcntl::O_WRONLY | Fcntl::O_CREAT | Fcntl::O_TRUNC, 0644
		405	or return;
		406
		407	$data = $data->() if ref $data;
		408
		409	length $data == aio_write $fh, 0, (length $data), $data, 0
		410	or return;
		411
		412	!$sync
		413	or !aio_fsync $fh
		414	or return;
		415
		416	aio_close $fh
		417	and return;
		418
		419	aio_rename "$path~", $path
		420	and return;
		421
		422	if ($sync) {
		423	$path =~ s%/[^/]*$%%;
		424	aio_pathsync $path;
		425	}
		426
		427	1
		428	}
		429
104	=item $ref = cf::from_json $json	430	=item $ref = cf::decode_json $json
105		431
106	Converts a JSON string into the corresponding perl data structure.	432	Converts a JSON string into the corresponding perl data structure.
107		433
108	=cut
109
110	sub from_json($) {
111	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
112	JSON::Syck::Load $_[0]
113	}
114
115	=item $json = cf::to_json $ref	434	=item $json = cf::encode_json $ref
116		435
117	Converts a perl data structure into its JSON representation.	436	Converts a perl data structure into its JSON representation.
118		437
119	=cut	438	=cut
120		439
121	sub to_json($) {	440	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	441
123	JSON::Syck::Dump $_[0]	442	sub encode_json($) { $json_coder->encode ($_[0]) }
		443	sub decode_json($) { $json_coder->decode ($_[0]) }
		444
		445	=item $ref = cf::decode_storable $scalar
		446
		447	Same as Coro::Storable::thaw, so blocks.
		448
		449	=cut
		450
		451	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		452
		453	=item $ref = cf::decode_yaml $scalar
		454
		455	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		456
		457	=cut
		458
		459	sub decode_yaml($) {
		460	fork_call { YAML::XS::Load $_[0] } @_
		461	}
		462
		463	=item $scalar = cf::unlzf $scalar
		464
		465	Same as Compress::LZF::compress, but takes server ticks into account, so
		466	blocks.
		467
		468	=cut
		469
		470	sub unlzf($) {
		471	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		472	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		473	Compress::LZF::decompress $_[0]
		474	}
		475
		476	=item cf::post_init { BLOCK }
		477
		478	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		479	but I<before> the server starts ticking again.
		480
		481	The codeblock will have a single boolean argument to indicate whether this
		482	is a reload or not.
		483
		484	=cut
		485
		486	sub post_init(&) {
		487	push @POST_INIT, shift;
		488	}
		489
		490	sub _post_init {
		491	trace "running post_init jobs";
		492
		493	# run them in parallel...
		494
		495	my @join;
		496
		497	while () {
		498	push @join, map &Coro::async ($_, 0), @POST_INIT;
		499	@POST_INIT = ();
		500
		501	@join or last;
		502
		503	(pop @join)->join;
		504	}
		505	}
		506
		507	=item cf::lock_wait $string
		508
		509	Wait until the given lock is available. See cf::lock_acquire.
		510
		511	=item my $lock = cf::lock_acquire $string
		512
		513	Wait until the given lock is available and then acquires it and returns
		514	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		515	for example when the coroutine gets canceled), the lock is automatically
		516	returned.
		517
		518	Locks are *not* recursive, locking from the same coro twice results in a
		519	deadlocked coro.
		520
		521	Lock names should begin with a unique identifier (for example, cf::map::find
		522	uses map_find and cf::map::load uses map_load).
		523
		524	=item $locked = cf::lock_active $string
		525
		526	Return true if the lock is currently active, i.e. somebody has locked it.
		527
		528	=cut
		529
		530	our $LOCKS = new Coro::SemaphoreSet;
		531
		532	sub lock_wait($) {
		533	$LOCKS->wait ($_[0]);
		534	}
		535
		536	sub lock_acquire($) {
		537	$LOCKS->guard ($_[0])
		538	}
		539
		540	sub lock_active($) {
		541	$LOCKS->count ($_[0]) < 1
		542	}
		543
		544	sub freeze_mainloop {
		545	tick_inhibit_inc;
		546
		547	&Guard::guard (\&tick_inhibit_dec);
		548	}
		549
		550	=item cf::periodic $interval, $cb
		551
		552	Like EV::periodic, but randomly selects a starting point so that the actions
		553	get spread over time.
		554
		555	=cut
		556
		557	sub periodic($$) {
		558	my ($interval, $cb) = @_;
		559
		560	my $start = rand List::Util::min 180, $interval;
		561
		562	EV::periodic $start, $interval, 0, $cb
		563	}
		564
		565	=item cf::get_slot $time[, $priority[, $name]]
		566
		567	Allocate $time seconds of blocking CPU time at priority C<$priority>
		568	(default: 0): This call blocks and returns only when you have at least
		569	C<$time> seconds of cpu time till the next tick. The slot is only valid
		570	till the next cede.
		571
		572	Background jobs should use a priority les than zero, interactive jobs
		573	should use 100 or more.
		574
		575	The optional C<$name> can be used to identify the job to run. It might be
		576	used for statistical purposes and should identify the same time-class.
		577
		578	Useful for short background jobs.
		579
		580	=cut
		581
		582	our @SLOT_QUEUE;
		583	our $SLOT_QUEUE;
		584	our $SLOT_DECAY = 0.9;
		585
		586	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		587	$SLOT_QUEUE = Coro::async {
		588	$Coro::current->desc ("timeslot manager");
		589
		590	my $signal = new Coro::Signal;
		591	my $busy;
		592
		593	while () {
		594	next_job:
		595
		596	my $avail = cf::till_tick;
		597
		598	for (0 .. $#SLOT_QUEUE) {
		599	if ($SLOT_QUEUE[$_][0] <= $avail) {
		600	$busy = 0;
		601	my $job = splice @SLOT_QUEUE, $_, 1, ();
		602	$job->[2]->send;
		603	Coro::cede;
		604	goto next_job;
		605	} else {
		606	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		607	}
		608	}
		609
		610	if (@SLOT_QUEUE) {
		611	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		612	$WAIT_FOR_TICK->wait;
		613	} else {
		614	$busy = 0;
		615	Coro::schedule;
		616	}
		617	}
		618	};
		619
		620	sub get_slot($;$$) {
		621	return if tick_inhibit || $Coro::current == $Coro::main;
		622
		623	my ($time, $pri, $name) = @_;
		624
		625	$time = clamp $time, 0.01, $TICK * .6;
		626
		627	my $sig = new Coro::Signal;
		628
		629	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		630	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		631	$SLOT_QUEUE->ready;
		632	$sig->wait;
		633	}
		634
		635	=item cf::async { BLOCK }
		636
		637	Currently the same as Coro::async_pool, meaning you cannot use
		638	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		639	thing you are allowed to do is call C<prio> on it.
		640
		641	=cut
		642
		643	BEGIN { *async = \&Coro::async_pool }
		644
		645	=item cf::sync_job { BLOCK }
		646
		647	The design of Deliantra requires that the main coroutine ($Coro::main)
		648	is always able to handle events or runnable, as Deliantra is only
		649	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		650	acceptable.
		651
		652	If it must be done, put the blocking parts into C<sync_job>. This will run
		653	the given BLOCK in another coroutine while waiting for the result. The
		654	server will be frozen during this time, so the block should either finish
		655	fast or be very important.
		656
		657	=cut
		658
		659	sub sync_job(&) {
		660	my ($job) = @_;
		661
		662	if (in_main) {
		663	my $time = AE::time;
		664
		665	# this is the main coro, too bad, we have to block
		666	# till the operation succeeds, freezing the server :/
		667
		668	#LOG llevError, Carp::longmess "sync job";#d#
		669
		670	my $freeze_guard = freeze_mainloop;
		671
		672	my $busy = 1;
		673	my @res;
		674
		675	(async {
		676	$Coro::current->desc ("sync job coro");
		677	@res = eval { $job->() };
		678	error $@ if $@;
		679	undef $busy;
		680	})->prio (Coro::PRIO_MAX);
		681
		682	while ($busy) {
		683	if (Coro::nready) {
		684	Coro::cede_notself;
		685	} else {
		686	EV::loop EV::LOOP_ONESHOT;
		687	}
		688	}
		689
		690	my $time = AE::time - $time;
		691
		692	$TICK_START += $time; # do not account sync jobs to server load
		693
		694	wantarray ? @res : $res[0]
		695	} else {
		696	# we are in another coroutine, how wonderful, everything just works
		697
		698	$job->()
		699	}
		700	}
		701
		702	=item $coro = cf::async_ext { BLOCK }
		703
		704	Like async, but this coro is automatically being canceled when the
		705	extension calling this is being unloaded.
		706
		707	=cut
		708
		709	sub async_ext(&) {
		710	my $cb = shift;
		711
		712	my $coro = &Coro::async ($cb);
		713
		714	$coro->on_destroy (sub {
		715	delete $EXT_CORO{$coro+0};
		716	});
		717	$EXT_CORO{$coro+0} = $coro;
		718
		719	$coro
		720	}
		721
		722	=item fork_call { }, @args
		723
		724	Executes the given code block with the given arguments in a seperate
		725	process, returning the results. Everything must be serialisable with
		726	Coro::Storable. May, of course, block. Note that the executed sub may
		727	never block itself or use any form of event handling.
		728
		729	=cut
		730
		731	sub post_fork {
		732	reset_signals;
		733	}
		734
		735	sub fork_call(&@) {
		736	my ($cb, @args) = @_;
		737
		738	# we seemingly have to make a local copy of the whole thing,
		739	# otherwise perl prematurely frees the stuff :/
		740	# TODO: investigate and fix (likely this will be rather laborious)
		741
		742	my @res = Coro::Util::fork_eval {
		743	cf::post_fork;
		744	&$cb
		745	} @args;
		746
		747	wantarray ? @res : $res[-1]
		748	}
		749
		750	sub objinfo {
		751	(
		752	"counter value" => cf::object::object_count,
		753	"objects created" => cf::object::create_count,
		754	"objects destroyed" => cf::object::destroy_count,
		755	"freelist size" => cf::object::free_count,
		756	"allocated objects" => cf::object::objects_size,
		757	"active objects" => cf::object::actives_size,
		758	)
		759	}
		760
		761	=item $coin = coin_from_name $name
		762
		763	=cut
		764
		765	our %coin_alias = (
		766	"silver" => "silvercoin",
		767	"silvercoin" => "silvercoin",
		768	"silvercoins" => "silvercoin",
		769	"gold" => "goldcoin",
		770	"goldcoin" => "goldcoin",
		771	"goldcoins" => "goldcoin",
		772	"platinum" => "platinacoin",
		773	"platinumcoin" => "platinacoin",
		774	"platinumcoins" => "platinacoin",
		775	"platina" => "platinacoin",
		776	"platinacoin" => "platinacoin",
		777	"platinacoins" => "platinacoin",
		778	"royalty" => "royalty",
		779	"royalties" => "royalty",
		780	);
		781
		782	sub coin_from_name($) {
		783	$coin_alias{$_[0]}
		784	? cf::arch::find $coin_alias{$_[0]}
		785	: undef
		786	}
		787
		788	=item $value = cf::db_get $family => $key
		789
		790	Returns a single value from the environment database.
		791
		792	=item cf::db_put $family => $key => $value
		793
		794	Stores the given C<$value> in the family. It can currently store binary
		795	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		796
		797	=item $db = cf::db_table "name"
		798
		799	Create and/or open a new database table. The string must not be "db" and must be unique
		800	within each server.
		801
		802	=cut
		803
		804	sub db_table($) {
		805	cf::error "db_get called from main context"
		806	if $Coro::current == $Coro::main;
		807
		808	my ($name) = @_;
		809	my $db = BDB::db_create $DB_ENV;
		810
		811	eval {
		812	$db->set_flags (BDB::CHKSUM);
		813
		814	utf8::encode $name;
		815	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		816	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		817	cf::cleanup "db_open(db): $!" if $!;
		818	};
		819	cf::cleanup "db_open(db): $@" if $@;
		820
		821	$db
		822	}
		823
		824	our $DB;
		825
		826	sub db_init {
		827	$DB ||= db_table "db";
		828	}
		829
		830	sub db_get($$) {
		831	my $key = "$_[0]/$_[1]";
		832
		833	cf::error "db_get called from main context"
		834	if $Coro::current == $Coro::main;
		835
		836	BDB::db_get $DB, undef, $key, my $data;
		837
		838	$! ? ()
		839	: $data
		840	}
		841
		842	sub db_put($$$) {
		843	BDB::dbreq_pri 4;
		844	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		845	}
		846
		847	=item cf::cache $id => [$paths...], $processversion => $process
		848
		849	Generic caching function that returns the value of the resource $id,
		850	caching and regenerating as required.
		851
		852	This function can block.
		853
		854	=cut
		855
		856	sub cache {
		857	my ($id, $src, $processversion, $process) = @_;
		858
		859	my $meta =
		860	join "\x00",
		861	$processversion,
		862	map {
		863	aio_stat $_
		864	and Carp::croak "$_: $!";
		865
		866	($_, (stat _)[7,9])
		867	} @$src;
		868
		869	my $dbmeta = db_get cache => "$id/meta";
		870	if ($dbmeta ne $meta) {
		871	# changed, we may need to process
		872
		873	my @data;
		874	my $md5;
		875
		876	for (0 .. $#$src) {
		877	$data[$_] = load_file $src->[$_];
		878	}
		879
		880	# if processing is expensive, check
		881	# checksum first
		882	if (1) {
		883	$md5 =
		884	join "\x00",
		885	$processversion,
		886	map {
		887	cf::cede_to_tick;
		888	($src->[$_], Digest::MD5::md5_hex $data[$_])
		889	} 0.. $#$src;
		890
		891
		892	my $dbmd5 = db_get cache => "$id/md5";
		893	if ($dbmd5 eq $md5) {
		894	db_put cache => "$id/meta", $meta;
		895
		896	return db_get cache => "$id/data";
		897	}
		898	}
		899
		900	my $t1 = Time::HiRes::time;
		901	my $data = $process->(\@data);
		902	my $t2 = Time::HiRes::time;
		903
		904	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		905
		906	db_put cache => "$id/data", $data;
		907	db_put cache => "$id/md5" , $md5;
		908	db_put cache => "$id/meta", $meta;
		909
		910	return $data;
		911	}
		912
		913	db_get cache => "$id/data"
		914	}
		915
		916	=item cf::datalog type => key => value, ...
		917
		918	Log a datalog packet of the given type with the given key-value pairs.
		919
		920	=cut
		921
		922	sub datalog($@) {
		923	my ($type, %kv) = @_;
		924	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
124	}	925	}
125		926
126	=back	927	=back
127		928
128	=cut	929	=cut
129		930
130	#############################################################################	931	#############################################################################
131		932
132	=head2 EVENTS AND OBJECT ATTACHMENTS	933	=head2 ATTACHABLE OBJECTS
		934
		935	Many objects in deliantra are so-called attachable objects. That means you can
		936	attach callbacks/event handlers (a collection of which is called an "attachment")
		937	to it. All such attachable objects support the following methods.
		938
		939	In the following description, CLASS can be any of C<global>, C<object>
		940	C<player>, C<client> or C<map> (i.e. the attachable objects in
		941	Deliantra).
133		942
134	=over 4	943	=over 4
135		944
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	945	=item $attachable->attach ($attachment, key => $value...)
149		946
150	=item $map->detach ($attachment)	947	=item $attachable->detach ($attachment)
151		948
152	Attach/detach a pre-registered attachment to a map.	949	Attach/detach a pre-registered attachment to a specific object and give it
		950	the specified key/value pairs as arguments.
153		951
154	=item $bool = $object->attached ($name)	952	Example, attach a minesweeper attachment to the given object, making it a
		953	10x10 minesweeper game:
155		954
156	=item $bool = $player->attached ($name)	955	$obj->attach (minesweeper => width => 10, height => 10);
157		956
158	=item $bool = $map->attached ($name)	957	=item $bool = $attachable->attached ($name)
159		958
160	Checks wether the named attachment is currently attached to the object.	959	Checks wether the named attachment is currently attached to the object.
161		960
162	=item cf::attach_global ...	961	=item cf::CLASS->attach ...
163		962
164	Attach handlers for global events.	963	=item cf::CLASS->detach ...
165		964
166	This and all following C<attach_*>-functions expect any number of the	965	Define an anonymous attachment and attach it to all objects of the given
167	following handler/hook descriptions:	966	CLASS. See the next function for an explanation of its arguments.
		967
		968	You can attach to global events by using the C<cf::global> class.
		969
		970	Example, log all player logins:
		971
		972	cf::player->attach (
		973	on_login => sub {
		974	my ($pl) = @_;
		975	...
		976	},
		977	);
		978
		979	Example, attach to the jeweler skill:
		980
		981	cf::object->attach (
		982	type => cf::SKILL,
		983	subtype => cf::SK_JEWELER,
		984	on_use_skill => sub {
		985	my ($sk, $ob, $part, $dir, $msg) = @_;
		986	...
		987	},
		988	);
		989
		990	=item cf::CLASS::attachment $name, ...
		991
		992	Register an attachment by C<$name> through which attachable objects of the
		993	given CLASS can refer to this attachment.
		994
		995	Some classes such as deliantra maps and objects can specify attachments
		996	that are attached at load/instantiate time, thus the need for a name.
		997
		998	These calls expect any number of the following handler/hook descriptions:
168		999
169	=over 4	1000	=over 4
170		1001
171	=item prio => $number	1002	=item prio => $number
172		1003
…		…
174	by another C<prio> setting). Lower priority handlers get executed	1005	by another C<prio> setting). Lower priority handlers get executed
175	earlier. The default priority is C<0>, and many built-in handlers are	1006	earlier. The default priority is C<0>, and many built-in handlers are
176	registered at priority C<-1000>, so lower priorities should not be used	1007	registered at priority C<-1000>, so lower priorities should not be used
177	unless you know what you are doing.	1008	unless you know what you are doing.
178		1009
		1010	=item type => $type
		1011
		1012	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		1013	given type of objects only (the additional parameter C<subtype> can be
		1014	used to further limit to the given subtype).
		1015
179	=item on_I<event> => \&cb	1016	=item on_I<event> => \&cb
180		1017
181	Call the given code reference whenever the named event happens (event is	1018	Call the given code reference whenever the named event happens (event is
182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	1019	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
183	handlers are recognised generally depends on the type of object these	1020	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	1029	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	1030	object/class are recognised.
194		1031
195	=back	1032	=back
196		1033
197	=item cf::attach_to_type $object_type, $subtype, ...	1034	Example, define an attachment called "sockpuppet" that calls the given
		1035	event handler when a monster attacks:
198		1036
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	1037	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	1038	on_skill_attack => sub {
201	type.	1039	my ($self, $victim) = @_;
202		1040	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	1041	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	1042	}
424	}
425		1043
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1044	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		1045
452	Just because you have a perl object does not mean that the corresponding	1046	Just because you have a perl object does not mean that the corresponding
453	C-level object still exists. If you try to access an object that has no	1047	C-level object still exists. If you try to access an object that has no
454	valid C counterpart anymore you get an exception at runtime. This method	1048	valid C counterpart anymore you get an exception at runtime. This method
455	can be used to test for existence of the C object part without causing an	1049	can be used to test for existence of the C object part without causing an
456	exception.	1050	exception.
457		1051
		1052	=cut
		1053
		1054	# the following variables are defined in .xs and must not be re-created
		1055	our @CB_GLOBAL = (); # registry for all global events
		1056	our @CB_ATTACHABLE = (); # registry for all attachables
		1057	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		1058	our @CB_PLAYER = ();
		1059	our @CB_CLIENT = ();
		1060	our @CB_TYPE = (); # registry for type (cf-object class) based events
		1061	our @CB_MAP = ();
		1062
		1063	my %attachment;
		1064
		1065	sub cf::attachable::thawer_merge {
		1066	# simply override everything except _meta
		1067	local $_[0]{_meta};
		1068	%{$_[0]} = %{$_[1]};
		1069	}
		1070
		1071	sub _attach_cb($$$$) {
		1072	my ($registry, $event, $prio, $cb) = @_;
		1073
		1074	use sort 'stable';
		1075
		1076	$cb = [$prio, $cb];
		1077
		1078	@{$registry->[$event]} = sort
		1079	{ $a->[0] cmp $b->[0] }
		1080	@{$registry->[$event] || []}, $cb;
		1081	}
		1082
		1083	# hack
		1084	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		1085
		1086	# attach handles attaching event callbacks
		1087	# the only thing the caller has to do is pass the correct
		1088	# registry (== where the callback attaches to).
		1089	sub _attach {
		1090	my ($registry, $klass, @arg) = @_;
		1091
		1092	my $object_type;
		1093	my $prio = 0;
		1094	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1095
		1096	#TODO: get rid of this hack
		1097	if ($attachable_klass{$klass}) {
		1098	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1099	}
		1100
		1101	while (@arg) {
		1102	my $type = shift @arg;
		1103
		1104	if ($type eq "prio") {
		1105	$prio = shift @arg;
		1106
		1107	} elsif ($type eq "type") {
		1108	$object_type = shift @arg;
		1109	$registry = $CB_TYPE[$object_type] ||= [];
		1110
		1111	} elsif ($type eq "subtype") {
		1112	defined $object_type or Carp::croak "subtype specified without type";
		1113	my $object_subtype = shift @arg;
		1114	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1115
		1116	} elsif ($type eq "package") {
		1117	my $pkg = shift @arg;
		1118
		1119	while (my ($name, $id) = each %cb_id) {
		1120	if (my $cb = $pkg->can ($name)) {
		1121	_attach_cb $registry, $id, $prio, $cb;
		1122	}
		1123	}
		1124
		1125	} elsif (exists $cb_id{$type}) {
		1126	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		1127
		1128	} elsif (ref $type) {
		1129	error "attaching objects not supported, ignoring.\n";
		1130
		1131	} else {
		1132	shift @arg;
		1133	error "attach argument '$type' not supported, ignoring.\n";
		1134	}
		1135	}
		1136	}
		1137
		1138	sub _object_attach {
		1139	my ($obj, $name, %arg) = @_;
		1140
		1141	return if exists $obj->{_attachment}{$name};
		1142
		1143	if (my $attach = $attachment{$name}) {
		1144	my $registry = $obj->registry;
		1145
		1146	for (@$attach) {
		1147	my ($klass, @attach) = @$_;
		1148	_attach $registry, $klass, @attach;
		1149	}
		1150
		1151	$obj->{$name} = \%arg;
		1152	} else {
		1153	info "object uses attachment '$name' which is not available, postponing.\n";
		1154	}
		1155
		1156	$obj->{_attachment}{$name} = undef;
		1157	}
		1158
		1159	sub cf::attachable::attach {
		1160	if (ref $_[0]) {
		1161	_object_attach @_;
		1162	} else {
		1163	_attach shift->_attach_registry, @_;
		1164	}
		1165	_recalc_want;
		1166	};
		1167
		1168	# all those should be optimised
		1169	sub cf::attachable::detach {
		1170	my ($obj, $name) = @_;
		1171
		1172	if (ref $obj) {
		1173	delete $obj->{_attachment}{$name};
		1174	reattach ($obj);
		1175	} else {
		1176	Carp::croak "cannot, currently, detach class attachments";
		1177	}
		1178	_recalc_want;
		1179	};
		1180
		1181	sub cf::attachable::attached {
		1182	my ($obj, $name) = @_;
		1183
		1184	exists $obj->{_attachment}{$name}
		1185	}
		1186
		1187	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1188	eval "#line " . __LINE__ . " 'cf.pm'
		1189	sub cf::\L$klass\E::_attach_registry {
		1190	(\\\@CB_$klass, KLASS_$klass)
		1191	}
		1192
		1193	sub cf::\L$klass\E::attachment {
		1194	my \$name = shift;
		1195
		1196	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1197	}
		1198	";
		1199	die if $@;
		1200	}
		1201
		1202	our $override;
		1203	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1204
		1205	sub override {
		1206	$override = 1;
		1207	@INVOKE_RESULTS = (@_);
		1208	}
		1209
		1210	sub do_invoke {
		1211	my $event = shift;
		1212	my $callbacks = shift;
		1213
		1214	@INVOKE_RESULTS = ();
		1215
		1216	local $override;
		1217
		1218	for (@$callbacks) {
		1219	eval { &{$_->[1]} };
		1220
		1221	if ($@) {
		1222	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1223	override;
		1224	}
		1225
		1226	return 1 if $override;
		1227	}
		1228
		1229	0
		1230	}
		1231
		1232	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1233
		1234	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1235
		1236	Generate an object-specific event with the given arguments.
		1237
		1238	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1239	removed in future versions), and there is no public API to access override
		1240	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1241
458	=back	1242	=back
459		1243
460	=cut	1244	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		1245
466	#############################################################################	1246	#############################################################################
467	# object support	1247	# object support
468		1248
469	sub instantiate {	1249	sub _object_equal($$);
		1250	sub _object_equal($$) {
		1251	my ($a, $b) = @_;
		1252
		1253	return 0 unless (ref $a) eq (ref $b);
		1254
		1255	if ("HASH" eq ref $a) {
		1256	my @ka = keys %$a;
		1257	my @kb = keys %$b;
		1258
		1259	return 0 if @ka != @kb;
		1260
		1261	for (0 .. $#ka) {
		1262	return 0 unless $ka[$_] eq $kb[$_];
		1263	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1264	}
		1265
		1266	} elsif ("ARRAY" eq ref $a) {
		1267
		1268	return 0 if @$a != @$b;
		1269
		1270	for (0 .. $#$a) {
		1271	return 0 unless _object_equal $a->[$_], $b->[$_];
		1272	}
		1273
		1274	} elsif ($a ne $b) {
		1275	return 0;
		1276	}
		1277
		1278	1
		1279	}
		1280
		1281	our $SLOW_MERGES;#d#
		1282	sub _can_merge {
470	my ($obj, $data) = @_;	1283	my ($ob1, $ob2) = @_;
471		1284
472	$data = from_json $data;	1285	++$SLOW_MERGES;#d#
473		1286
474	for (@$data) {	1287	# we do the slow way here
475	my ($name, $args) = @$_;	1288	return _object_equal $ob1, $ob2
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}	1289	}
480		1290
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	1291	sub reattach {
		1292	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	1293	my ($obj) = @_;
		1294
		1295	# no longer needed after getting rid of delete_package?
		1296	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1297
484	my $registry = $obj->registry;	1298	my $registry = $obj->registry;
485		1299
486	@$registry = ();	1300	@$registry = ();
487		1301
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1302	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		1303
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	1304	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	1305	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	1306	for (@$attach) {
493	my ($klass, @attach) = @$_;	1307	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	1308	_attach $registry, $klass, @attach;
495	}	1309	}
496	} else {	1310	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	1311	info "object uses attachment '$name' that is not available, postponing.\n";
498	}
499	}
500	}
501
502	sub object_freezer_save {
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}	1312	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}	1313	}
531	}	1314	}
532		1315
533	sub object_freezer_as_string {	1316	cf::attachable->attach (
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	1317	prio => -1000000,
		1318	on_instantiate => sub {
		1319	my ($obj, $data) = @_;
		1320
		1321	$data = decode_json $data;
		1322
		1323	for (@$data) {
		1324	my ($name, $args) = @$_;
		1325
		1326	$obj->attach ($name, %{$args || {} });
		1327	}
		1328	},
		1329	on_reattach => \&reattach,
562	on_clone => sub {	1330	on_clone => sub {
563	my ($src, $dst) = @_;	1331	my ($src, $dst) = @_;
564		1332
565	@{$dst->registry} = @{$src->registry};	1333	@{$dst->registry} = @{$src->registry};
566		1334
567	%$dst = %$src;	1335	%$dst = %$src;
568		1336
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	1337	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	1338	if exists $src->{_attachment};
571	},	1339	},
572	;	1340	);
		1341
		1342	sub object_freezer_save {
		1343	my ($filename, $rdata, $objs) = @_;
		1344
		1345	sync_job {
		1346	if (length $$rdata) {
		1347	utf8::decode (my $decname = $filename);
		1348	trace sprintf "saving %s (%d,%d)\n",
		1349	$decname, length $$rdata, scalar @$objs
		1350	if $VERBOSE_IO;
		1351
		1352	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1353	aio_chmod $fh, SAVE_MODE;
		1354	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1355	if ($cf::USE_FSYNC) {
		1356	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1357	aio_fsync $fh;
		1358	}
		1359	aio_close $fh;
		1360
		1361	if (@$objs) {
		1362	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1363	aio_chmod $fh, SAVE_MODE;
		1364	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1365	aio_write $fh, 0, (length $data), $data, 0;
		1366	if ($cf::USE_FSYNC) {
		1367	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1368	aio_fsync $fh;
		1369	}
		1370	aio_close $fh;
		1371	aio_rename "$filename.pst~", "$filename.pst";
		1372	}
		1373	} else {
		1374	aio_unlink "$filename.pst";
		1375	}
		1376
		1377	aio_rename "$filename~", $filename;
		1378
		1379	$filename =~ s%/[^/]+$%%;
		1380	aio_pathsync $filename if $cf::USE_FSYNC;
		1381	} else {
		1382	error "unable to save objects: $filename~: $!\n";
		1383	}
		1384	} else {
		1385	aio_unlink $filename;
		1386	aio_unlink "$filename.pst";
		1387	}
		1388	};
		1389	}
		1390
		1391	sub object_freezer_as_string {
		1392	my ($rdata, $objs) = @_;
		1393
		1394	use Data::Dumper;
		1395
		1396	$$rdata . Dumper $objs
		1397	}
		1398
		1399	sub object_thawer_load {
		1400	my ($filename) = @_;
		1401
		1402	my ($data, $av);
		1403
		1404	(aio_load $filename, $data) >= 0
		1405	or return;
		1406
		1407	unless (aio_stat "$filename.pst") {
		1408	(aio_load "$filename.pst", $av) >= 0
		1409	or return;
		1410
		1411	my $st = eval { Coro::Storable::thaw $av };
		1412	$av = $st->{objs};
		1413	}
		1414
		1415	utf8::decode (my $decname = $filename);
		1416	trace sprintf "loading %s (%d,%d)\n",
		1417	$decname, length $data, scalar @{$av || []}
		1418	if $VERBOSE_IO;
		1419
		1420	($data, $av)
		1421	}
		1422
		1423	=head2 COMMAND CALLBACKS
		1424
		1425	=over 4
		1426
		1427	=cut
573		1428
574	#############################################################################	1429	#############################################################################
575	# old plug-in events	1430	# command handling &c
576		1431
577	sub inject_event {	1432	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		1433
581	my $cb = $hook[$event_code]{$extension}	1434	Register a callback for execution when the client sends the user command
582	or return;	1435	$name.
583		1436
584	&$cb	1437	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		1438
606	sub register_command {	1439	sub register_command {
607	my ($name, $time, $cb) = @_;	1440	my ($name, $cb) = @_;
608		1441
609	my $caller = caller;	1442	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	1443	#warn "registering command '$name/$time' to '$caller'";
611		1444
612	push @{ $command{$name} }, [$time, $cb, $caller];	1445	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	1446	}
		1447
		1448	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1449
		1450	Register a callback for execution when the client sends an (synchronous)
		1451	extcmd packet. Ext commands will be processed in the order they are
		1452	received by the server, like other user commands. The first argument is
		1453	the logged-in player. Ext commands can only be processed after a player
		1454	has logged in successfully.
		1455
		1456	If the callback returns something, it is sent back as if reply was being
		1457	called.
		1458
		1459	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1460
		1461	Register a callback for execution when the client sends an (asynchronous)
		1462	exticmd packet. Exti commands are processed by the server as soon as they
		1463	are received, i.e. out of order w.r.t. other commands. The first argument
		1464	is a client socket. Exti commands can be received anytime, even before
		1465	log-in.
		1466
		1467	If the callback returns something, it is sent back as if reply was being
		1468	called.
		1469
		1470	=cut
615		1471
616	sub register_extcmd {	1472	sub register_extcmd {
617	my ($name, $cb) = @_;	1473	my ($name, $cb) = @_;
618		1474
619	my $caller = caller;	1475	$EXTCMD{$name} = $cb;
620	#warn "registering extcmd '$name' to '$caller'";
621
622	$extcmd{$name} = [$cb, $caller];
623	}	1476	}
624		1477
625	sub register {	1478	sub register_exticmd {
626	my ($base, $pkg) = @_;	1479	my ($name, $cb) = @_;
627		1480
628	#TODO	1481	$EXTICMD{$name} = $cb;
629	}	1482	}
630		1483
631	sub load_extension {	1484	use File::Glob ();
632	my ($path) = @_;
633		1485
634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1486	cf::player->attach (
635	my $base = $1;	1487	on_unknown_command => sub {
636	my $pkg = $1;	1488	my ($pl, $name, $params) = @_;
637	$pkg =~ s/[^[:word:]]/_/g;
638	$pkg = "ext::$pkg";
639		1489
640	warn "loading '$path' into '$pkg'\n";	1490	my $cb = $COMMAND{$name}
		1491	or return;
641		1492
642	open my $fh, "<:utf8", $path	1493	for my $cmd (@$cb) {
643	or die "$path: $!";	1494	$cmd->[1]->($pl->ob, $params);
644
645	my $source =
646	"package $pkg; use strict; use utf8;\n"
647	. "#line 1 \"$path\"\n{\n"
648	. (do { local $/; <$fh> })
649	. "\n};\n1";
650
651	eval $source
652	or die $@ ? "$path: $@\n"
653	: "extension disabled.\n";
654
655	push @exts, $pkg;
656	$ext_pkg{$base} = $pkg;
657
658	# no strict 'refs';
659	# @{"$pkg\::ISA"} = ext::;
660
661	register $base, $pkg;
662	}
663
664	sub unload_extension {
665	my ($pkg) = @_;
666
667	warn "removing extension $pkg\n";
668
669	# remove hooks
670	#TODO
671	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};
673	# }
674
675	# remove commands
676	for my $name (keys %command) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
678
679	if (@cb) {
680	$command{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};
685	}	1495	}
		1496
		1497	cf::override;
686	}	1498	},
687
688	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
690	delete $extcmd{$name};
691	}
692
693	if (my $cb = $pkg->can ("unload")) {
694	eval {
695	$cb->($pkg);
696	1
697	} or warn "$pkg unloaded, but with errors: $@";
698	}
699
700	Symbol::delete_package $pkg;
701	}
702
703	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;
708	eval {
709	load_extension $ext;
710	1
711	} or warn "$ext not loaded: $@";
712	}
713	}
714
715	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718
719	attach_to_players
720	on_extcmd => sub {	1499	on_extcmd => sub {
721	my ($pl, $buf) = @_;	1500	my ($pl, $buf) = @_;
722		1501
723	my $msg = eval { from_json $buf };	1502	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
724		1503
725	if (ref $msg) {	1504	if (ref $msg) {
		1505	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		1506
		1507	my @reply;
		1508
726	if (my $cb = $extcmd{$msg->{msgtype}}) {	1509	if (my $cb = $EXTCMD{$type}) {
727	if (my %reply = $cb->[0]->($pl, $msg)) {	1510	@reply = $cb->($pl, @payload);
728	$pl->ext_reply ($msg->{msgid}, %reply);	1511	}
		1512
		1513	$pl->ext_reply ($reply, @reply)
		1514	if $reply;
		1515
		1516	} else {
		1517	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1518	}
		1519
		1520	cf::override;
		1521	},
		1522	);
		1523
		1524	# "readahead" all extensions
		1525	sub cache_extensions {
		1526	my $grp = IO::AIO::aio_group;
		1527
		1528	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1529	for (grep /\.ext$/, @{$_[0]}) {
		1530	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1531	}
		1532	};
		1533
		1534	$grp
		1535	}
		1536
		1537	sub _ext_cfg_reg($$$$) {
		1538	my ($rvar, $varname, $cfgname, $default) = @_;
		1539
		1540	$cfgname = lc $varname
		1541	unless length $cfgname;
		1542
		1543	$EXT_CFG{$cfgname} = [$rvar, $default];
		1544
		1545	$$rvar = exists $CFG{$cfgname} ? $CFG{$cfgname} : $default;
		1546	}
		1547
		1548	sub load_extensions {
		1549	info "loading extensions...";
		1550
		1551	%EXT_CFG = ();
		1552
		1553	cf::sync_job {
		1554	my %todo;
		1555
		1556	for my $path (<$LIBDIR/*.ext>) {
		1557	next unless -r $path;
		1558
		1559	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1560	my $base = $1;
		1561	my $pkg = $1;
		1562	$pkg =~ s/[^[:word:]]/_/g;
		1563	$pkg = "ext::$pkg";
		1564
		1565	open my $fh, "<:utf8", $path
		1566	or die "$path: $!";
		1567
		1568	my $source = do { local $/; <$fh> };
		1569
		1570	my %ext = (
		1571	path => $path,
		1572	base => $base,
		1573	pkg => $pkg,
		1574	);
		1575
		1576	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1577	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1578
		1579	$ext{source} =
		1580	"package $pkg; use common::sense;\n"
		1581	. "#line 1 \"$path\"\n{\n"
		1582	. $source
		1583	. "\n};\n1";
		1584
		1585	$todo{$base} = \%ext;
		1586	}
		1587
		1588	my $pass = 0;
		1589	my %done;
		1590	while (%todo) {
		1591	my $progress;
		1592
		1593	++$pass;
		1594
		1595	ext:
		1596	while (my ($k, $v) = each %todo) {
		1597	for (split /,\s*/, $v->{meta}{depends}) {
		1598	next ext
		1599	unless exists $done{$_};
		1600	}
		1601
		1602	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1603
		1604	my $source = $v->{source};
		1605
		1606	# support "CONF varname :confname = default" pseudo-statements
		1607	$source =~ s{
		1608	^ CONF \s+ ([^\s:=]+) \s* (?:: \s* ([^\s:=]+) \s* )? = ([^\n#]+)
		1609	}{
		1610	"our \$$1; BEGIN { cf::_ext_cfg_reg \\\$$1, q\x00$1\x00, q\x00$2\x00, $3 }";
		1611	}gmxe;
		1612
		1613	my $active = eval $source;
		1614
		1615	if (length $@) {
		1616	error "$v->{path}: $@\n";
		1617
		1618	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1619	if exists $v->{meta}{mandatory};
		1620
		1621	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1622	delete $todo{$k};
		1623	} else {
		1624	$done{$k} = delete $todo{$k};
		1625	push @EXTS, $v->{pkg};
		1626	$progress = 1;
		1627
		1628	info "$v->{base}: extension inactive.\n"
		1629	unless $active;
729	}	1630	}
730	}	1631	}
731	} else {	1632
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1633	unless ($progress) {
		1634	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1635
		1636	while (my ($k, $v) = each %todo) {
		1637	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1638	if exists $v->{meta}{mandatory};
		1639	}
		1640
		1641	last;
733	}	1642	}
734		1643	}
735	cf::override;
736	},	1644	};
737	;	1645	}
738		1646
739	#############################################################################	1647	#############################################################################
740	# load/save/clean perl data associated with a map
741		1648
742	*cf::mapsupport::on_clean = sub {	1649	=back
		1650
		1651	=head2 CORE EXTENSIONS
		1652
		1653	Functions and methods that extend core deliantra objects.
		1654
		1655	=cut
		1656
		1657	package cf::player;
		1658
		1659	use Coro::AIO;
		1660
		1661	=head3 cf::player
		1662
		1663	=over 4
		1664
		1665	=item cf::player::num_playing
		1666
		1667	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1668
		1669	=cut
		1670
		1671	sub num_playing {
		1672	scalar grep
		1673	$_->ob->map
		1674	&& !$_->hidden
		1675	&& !$_->ob->flag (cf::FLAG_WIZ),
		1676	cf::player::list
		1677	}
		1678
		1679	=item cf::player::find $login
		1680
		1681	Returns the given player object, loading it if necessary (might block).
		1682
		1683	=cut
		1684
		1685	sub playerdir($) {
		1686	"$PLAYERDIR/"
		1687	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1688	}
		1689
		1690	sub path($) {
		1691	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1692
		1693	(playerdir $login) . "/playerdata"
		1694	}
		1695
		1696	sub find_active($) {
		1697	$cf::PLAYER{$_[0]}
		1698	and $cf::PLAYER{$_[0]}->active
		1699	and $cf::PLAYER{$_[0]}
		1700	}
		1701
		1702	sub exists($) {
743	my ($map) = @_;	1703	my ($login) = @_;
744		1704
745	my $path = $map->tmpname;	1705	$cf::PLAYER{$login}
746	defined $path or return;	1706	or !aio_stat path $login
747
748	unlink "$path.pst";
749	};
750
751	attach_to_maps prio => -10000, package => cf::mapsupport::;
752
753	#############################################################################
754	# load/save perl data associated with player->ob objects
755
756	sub all_objects(@) {
757	@_, map all_objects ($_->inv), @_
758	}	1707	}
759		1708
760	# TODO: compatibility cruft, remove when no longer needed	1709	sub find($) {
761	attach_to_players	1710	return $cf::PLAYER{$_[0]} || do {
		1711	my $login = $_[0];
		1712
		1713	my $guard = cf::lock_acquire "user_find:$login";
		1714
		1715	$cf::PLAYER{$_[0]} || do {
		1716	# rename old playerfiles to new ones
		1717	#TODO: remove when no longer required
		1718	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1719	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1720	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1721	aio_unlink +(playerdir $login) . "/$login.pl";
		1722
		1723	my $f = new_from_file cf::object::thawer path $login
		1724	or return;
		1725
		1726	my $pl = cf::player::load_pl $f
		1727	or return;
		1728
		1729	local $cf::PLAYER_LOADING{$login} = $pl;
		1730	$f->resolve_delayed_derefs;
		1731	$cf::PLAYER{$login} = $pl
		1732	}
		1733	}
		1734	}
		1735
		1736	cf::player->attach (
762	on_load => sub {	1737	on_load => sub {
763	my ($pl, $path) = @_;	1738	my ($pl, $path) = @_;
764		1739
765	for my $o (all_objects $pl->ob) {	1740	# restore slots saved in save, below
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1741	my $slots = delete $pl->{_slots};
767	$o->set_ob_key_value ("_perl_data");
768		1742
769	%$o = %{ Storable::thaw pack "H*", $value };	1743	$pl->ob->current_weapon ($slots->[0]);
		1744	$pl->combat_ob ($slots->[1]);
		1745	$pl->ranged_ob ($slots->[2]);
		1746	},
		1747	);
		1748
		1749	sub save($) {
		1750	my ($pl) = @_;
		1751
		1752	return if $pl->{deny_save};
		1753
		1754	my $path = path $pl;
		1755	my $guard = cf::lock_acquire "user_save:$path";
		1756
		1757	return if $pl->{deny_save};
		1758
		1759	aio_mkdir playerdir $pl, 0770;
		1760	$pl->{last_save} = $cf::RUNTIME;
		1761
		1762	cf::get_slot 0.01;
		1763
		1764	# save slots, to be restored later
		1765	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1766
		1767	$pl->save_pl ($path);
		1768	cf::cede_to_tick;
		1769	}
		1770
		1771	sub new($) {
		1772	my ($login) = @_;
		1773
		1774	my $self = create;
		1775
		1776	$self->ob->name ($login);
		1777	$self->{deny_save} = 1;
		1778
		1779	$cf::PLAYER{$login} = $self;
		1780
		1781	$self
		1782	}
		1783
		1784	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1785
		1786	=cut
		1787
		1788	sub send_msg {
		1789	my $ns = shift->ns
		1790	or return;
		1791	$ns->send_msg (@_);
		1792	}
		1793
		1794	=item $pl->quit_character
		1795
		1796	Nukes the player without looking back. If logged in, the connection will
		1797	be destroyed. May block for a long time.
		1798
		1799	=cut
		1800
		1801	sub quit_character {
		1802	my ($pl) = @_;
		1803
		1804	my $name = $pl->ob->name;
		1805
		1806	$pl->{deny_save} = 1;
		1807	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1808
		1809	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1810	$pl->deactivate;
		1811
		1812	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1813	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1814	ext::highscore::check ($pl->ob);
		1815
		1816	$pl->ns->destroy if $pl->ns;
		1817
		1818	my $path = playerdir $pl;
		1819	my $temp = "$path~$cf::RUNTIME~deleting~";
		1820	aio_rename $path, $temp;
		1821	delete $cf::PLAYER{$pl->ob->name};
		1822	$pl->destroy;
		1823
		1824	my $prefix = qr<^~\Q$name\E/>;
		1825
		1826	# nuke player maps
		1827	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1828
		1829	IO::AIO::aio_rmtree $temp;
		1830	}
		1831
		1832	=item $pl->kick
		1833
		1834	Kicks a player out of the game. This destroys the connection.
		1835
		1836	=cut
		1837
		1838	sub kick {
		1839	my ($pl, $kicker) = @_;
		1840
		1841	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1842	$pl->killer ("kicked");
		1843	$pl->ns->destroy;
		1844	}
		1845
		1846	=item cf::player::list_logins
		1847
		1848	Returns am arrayref of all valid playernames in the system, can take a
		1849	while and may block, so not sync_job-capable, ever.
		1850
		1851	=cut
		1852
		1853	sub list_logins {
		1854	my $dirs = aio_readdir $PLAYERDIR
		1855	or return [];
		1856
		1857	my @logins;
		1858
		1859	for my $login (@$dirs) {
		1860	my $path = path $login;
		1861
		1862	# a .pst is a dead give-away for a valid player
		1863	# if no pst file found, open and chekc for blocked users
		1864	if (aio_stat "$path.pst") {
		1865	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1866	aio_read $fh, 0, 512, my $buf, 0 or next;
		1867	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1868	}
		1869
		1870	utf8::decode $login;
		1871	push @logins, $login;
		1872	}
		1873
		1874	\@logins
		1875	}
		1876
		1877	=item $player->maps
		1878
		1879	=item cf::player::maps $login
		1880
		1881	Returns an arrayref of map paths that are private for this
		1882	player. May block.
		1883
		1884	=cut
		1885
		1886	sub maps($) {
		1887	my ($pl) = @_;
		1888
		1889	$pl = ref $pl ? $pl->ob->name : $pl;
		1890
		1891	my $files = aio_readdir playerdir $pl
		1892	or return;
		1893
		1894	my @paths;
		1895
		1896	for (@$files) {
		1897	utf8::decode $_;
		1898	next if /\.(?:pl|pst)$/;
		1899	next unless /^$PATH_SEP/o;
		1900
		1901	push @paths, cf::map::normalise "~$pl/$_";
		1902	}
		1903
		1904	\@paths
		1905	}
		1906
		1907	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1908
		1909	Expand deliantra pod fragments into protocol xml.
		1910
		1911	=item $player->ext_reply ($msgid, @msg)
		1912
		1913	Sends an ext reply to the player.
		1914
		1915	=cut
		1916
		1917	sub ext_reply($$@) {
		1918	my ($self, $id, @msg) = @_;
		1919
		1920	$self->ns->ext_reply ($id, @msg)
		1921	}
		1922
		1923	=item $player->ext_msg ($type, @msg)
		1924
		1925	Sends an ext event to the client.
		1926
		1927	=cut
		1928
		1929	sub ext_msg($$@) {
		1930	my ($self, $type, @msg) = @_;
		1931
		1932	$self->ns->ext_msg ($type, @msg);
		1933	}
		1934
		1935	=head3 cf::region
		1936
		1937	=over 4
		1938
		1939	=cut
		1940
		1941	package cf::region;
		1942
		1943	=item cf::region::find_by_path $path
		1944
		1945	Tries to decuce the likely region for a map knowing only its path.
		1946
		1947	=cut
		1948
		1949	sub find_by_path($) {
		1950	my ($path) = @_;
		1951
		1952	$path =~ s/^~[^\/]*//; # skip ~login
		1953
		1954	my ($match, $specificity);
		1955
		1956	for my $region (list) {
		1957	if ($region->{match} && $path =~ $region->{match}) {
		1958	($match, $specificity) = ($region, $region->specificity)
		1959	if $region->specificity > $specificity;
		1960	}
		1961	}
		1962
		1963	$match
		1964	}
		1965
		1966	=back
		1967
		1968	=head3 cf::map
		1969
		1970	=over 4
		1971
		1972	=cut
		1973
		1974	package cf::map;
		1975
		1976	use Fcntl;
		1977	use Coro::AIO;
		1978
		1979	use overload
		1980	'""' => \&as_string,
		1981	fallback => 1;
		1982
		1983	our $MAX_RESET = 3600;
		1984	our $DEFAULT_RESET = 3000;
		1985
		1986	sub generate_random_map {
		1987	my ($self, $rmp) = @_;
		1988
		1989	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1990
		1991	$self->_create_random_map ($rmp);
		1992	}
		1993
		1994	=item cf::map->register ($regex, $prio)
		1995
		1996	Register a handler for the map path matching the given regex at the
		1997	givne priority (higher is better, built-in handlers have priority 0, the
		1998	default).
		1999
		2000	=cut
		2001
		2002	sub register {
		2003	my (undef, $regex, $prio) = @_;
		2004	my $pkg = caller;
		2005
		2006	push @{"$pkg\::ISA"}, __PACKAGE__;
		2007
		2008	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		2009	}
		2010
		2011	# also paths starting with '/'
		2012	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		2013
		2014	sub thawer_merge {
		2015	my ($self, $merge) = @_;
		2016
		2017	# we have to keep some variables in memory intact
		2018	local $self->{path};
		2019	local $self->{load_path};
		2020
		2021	$self->SUPER::thawer_merge ($merge);
		2022	}
		2023
		2024	sub normalise {
		2025	my ($path, $base) = @_;
		2026
		2027	$path = "$path"; # make sure it's a string
		2028
		2029	$path =~ s/\.map$//;
		2030
		2031	# map plan:
		2032	#
		2033	# /! non-realised random map exit (special hack!)
		2034	# {... are special paths that are not being touched
		2035	# ?xxx/... are special absolute paths
		2036	# ?random/... random maps
		2037	# /... normal maps
		2038	# ~user/... per-player map of a specific user
		2039
		2040	$path =~ s/$PATH_SEP/\//go;
		2041
		2042	# treat it as relative path if it starts with
		2043	# something that looks reasonable
		2044	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		2045	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		2046
		2047	$base =~ s{[^/]+/?$}{};
		2048	$path = "$base/$path";
		2049	}
		2050
		2051	for ($path) {
		2052	redo if s{/\.?/}{/};
		2053	redo if s{/[^/]+/\.\./}{/};
		2054	}
		2055
		2056	$path
		2057	}
		2058
		2059	sub new_from_path {
		2060	my (undef, $path, $base) = @_;
		2061
		2062	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2063
		2064	$path = normalise $path, $base;
		2065
		2066	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2067	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2068	my $self = bless cf::map::new, $pkg;
		2069	$self->{path} = $path; $self->path ($path);
		2070	$self->init; # pass $1 etc.
		2071	return $self;
		2072	}
		2073	}
		2074
		2075	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2076	()
		2077	}
		2078
		2079	# may re-bless or do other evil things
		2080	sub init {
		2081	my ($self) = @_;
		2082
		2083	$self
		2084	}
		2085
		2086	sub as_string {
		2087	my ($self) = @_;
		2088
		2089	"$self->{path}"
		2090	}
		2091
		2092	# the displayed name, this is a one way mapping
		2093	sub visible_name {
		2094	&as_string
		2095	}
		2096
		2097	# the original (read-only) location
		2098	sub load_path {
		2099	my ($self) = @_;
		2100
		2101	"$MAPDIR/$self->{path}.map"
		2102	}
		2103
		2104	# the temporary/swap location
		2105	sub save_path {
		2106	my ($self) = @_;
		2107
		2108	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2109	"$TMPDIR/$path.map"
		2110	}
		2111
		2112	# the unique path, undef == no special unique path
		2113	sub uniq_path {
		2114	my ($self) = @_;
		2115
		2116	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2117	"$UNIQUEDIR/$path"
		2118	}
		2119
		2120	sub decay_objects {
		2121	my ($self) = @_;
		2122
		2123	return if $self->{deny_reset};
		2124
		2125	$self->do_decay_objects;
		2126	}
		2127
		2128	sub unlink_save {
		2129	my ($self) = @_;
		2130
		2131	utf8::encode (my $save = $self->save_path);
		2132	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2133	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2134	}
		2135
		2136	sub load_header_from($) {
		2137	my ($self, $path) = @_;
		2138
		2139	utf8::encode $path;
		2140	my $f = new_from_file cf::object::thawer $path
		2141	or return;
		2142
		2143	$self->_load_header ($f)
		2144	or return;
		2145
		2146	local $MAP_LOADING{$self->{path}} = $self;
		2147	$f->resolve_delayed_derefs;
		2148
		2149	$self->{load_path} = $path;
		2150
		2151	1
		2152	}
		2153
		2154	# used to laod the header of an original map
		2155	sub load_header_orig {
		2156	my ($self) = @_;
		2157
		2158	$self->load_header_from ($self->load_path)
		2159	}
		2160
		2161	# used to laod the header of an instantiated map
		2162	sub load_header_temp {
		2163	my ($self) = @_;
		2164
		2165	$self->load_header_from ($self->save_path)
		2166	}
		2167
		2168	# called after loading the header from an instantiated map
		2169	sub prepare_temp {
		2170	my ($self) = @_;
		2171
		2172	$self->last_access ((delete $self->{last_access})
		2173	|| $cf::RUNTIME); #d#
		2174	# safety
		2175	$self->{instantiate_time} = $cf::RUNTIME
		2176	if $self->{instantiate_time} > $cf::RUNTIME;
		2177	}
		2178
		2179	# called after loading the header from an original map
		2180	sub prepare_orig {
		2181	my ($self) = @_;
		2182
		2183	$self->{load_original} = 1;
		2184	$self->{instantiate_time} = $cf::RUNTIME;
		2185	$self->last_access ($cf::RUNTIME);
		2186	$self->instantiate;
		2187	}
		2188
		2189	sub load_header {
		2190	my ($self) = @_;
		2191
		2192	if ($self->load_header_temp) {
		2193	$self->prepare_temp;
		2194	} else {
		2195	$self->load_header_orig
		2196	or return;
		2197	$self->prepare_orig;
		2198	}
		2199
		2200	$self->{deny_reset} = 1
		2201	if $self->no_reset;
		2202
		2203	$self->default_region (cf::region::find_by_path $self->{path})
		2204	unless $self->default_region;
		2205
		2206	1
		2207	}
		2208
		2209	sub find;
		2210	sub find {
		2211	my ($path, $origin) = @_;
		2212
		2213	cf::cede_to_tick;
		2214
		2215	$path = normalise $path, $origin;
		2216
		2217	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2218	my $guard2 = cf::lock_acquire "map_find:$path";
		2219
		2220	$cf::MAP{$path} || do {
		2221	my $map = new_from_path cf::map $path
		2222	or return;
		2223
		2224	$map->{last_save} = $cf::RUNTIME;
		2225
		2226	$map->load_header
		2227	or return;
		2228
		2229	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2230	# doing this can freeze the server in a sync job, obviously
		2231	#$cf::WAIT_FOR_TICK->wait;
		2232	undef $guard2;
		2233	undef $guard1;
		2234	$map->reset;
		2235	return find $path;
		2236	}
		2237
		2238	$cf::MAP{$path} = $map
		2239	}
		2240	}
		2241
		2242	sub pre_load { }
		2243	#sub post_load { } # XS
		2244
		2245	sub load {
		2246	my ($self) = @_;
		2247
		2248	local $self->{deny_reset} = 1; # loading can take a long time
		2249
		2250	my $path = $self->{path};
		2251
		2252	{
		2253	my $guard = cf::lock_acquire "map_data:$path";
		2254
		2255	return unless $self->valid;
		2256	return unless $self->state == cf::MAP_SWAPPED;
		2257
		2258	$self->alloc;
		2259
		2260	$self->pre_load;
		2261	cf::cede_to_tick;
		2262
		2263	if (exists $self->{load_path}) {
		2264	my $f = new_from_file cf::object::thawer $self->{load_path};
		2265	$f->skip_block;
		2266	$self->_load_objects ($f)
		2267	or return;
		2268
		2269	$self->post_load_original
		2270	if delete $self->{load_original};
		2271
		2272	if (my $uniq = $self->uniq_path) {
		2273	utf8::encode $uniq;
		2274	unless (aio_stat $uniq) {
		2275	if (my $f = new_from_file cf::object::thawer $uniq) {
		2276	$self->clear_unique_items;
		2277	$self->_load_objects ($f);
		2278	$f->resolve_delayed_derefs;
		2279	}
		2280	}
770	}	2281	}
		2282
		2283	$f->resolve_delayed_derefs;
		2284	} else {
		2285	$self->post_load_original
		2286	if delete $self->{load_original};
771	}	2287	}
		2288
		2289	$self->state (cf::MAP_INACTIVE);
		2290
		2291	cf::cede_to_tick;
		2292	# now do the right thing for maps
		2293	$self->link_multipart_objects;
		2294	$self->difficulty ($self->estimate_difficulty)
		2295	unless $self->difficulty;
		2296	cf::cede_to_tick;
		2297
		2298	unless ($self->{deny_activate}) {
		2299	$self->decay_objects;
		2300	$self->fix_auto_apply;
		2301	$self->update_buttons;
		2302	cf::cede_to_tick;
		2303	#$self->activate; # no longer activate maps automatically
		2304	}
		2305
		2306	$self->{last_save} = $cf::RUNTIME;
		2307	$self->last_access ($cf::RUNTIME);
772	},	2308	}
773	;
774		2309
775	#############################################################################	2310	$self->post_load;
776		2311
777	=head2 CORE EXTENSIONS	2312	1
		2313	}
778		2314
779	Functions and methods that extend core crossfire objects.	2315	# customize the map for a given player, i.e.
		2316	# return the _real_ map. used by e.g. per-player
		2317	# maps to change the path to ~playername/mappath
		2318	sub customise_for {
		2319	my ($self, $ob) = @_;
		2320
		2321	return find "~" . $ob->name . "/" . $self->{path}
		2322	if $self->per_player;
		2323
		2324	# return find "?party/" . $ob->name . "/" . $self->{path}
		2325	# if $self->per_party;
		2326
		2327	$self
		2328	}
		2329
		2330	sub find_sync {
		2331	my ($path, $origin) = @_;
		2332
		2333	# it's a bug to call this from the main context
		2334	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2335	if $Coro::current == $Coro::main;
		2336
		2337	find $path, $origin
		2338	}
		2339
		2340	sub do_load_sync {
		2341	my ($map) = @_;
		2342
		2343	# it's a bug to call this from the main context
		2344	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2345	if $Coro::current == $Coro::main;
		2346
		2347	$map->load;
		2348	}
		2349
		2350	our %MAP_PREFETCH;
		2351	our $MAP_PREFETCHER = undef;
		2352
		2353	sub find_async {
		2354	my ($path, $origin, $load) = @_;
		2355
		2356	$path = normalise $path, $origin;
		2357
		2358	if (my $map = $cf::MAP{$path}) {
		2359	return $map if !$load || $map->linkable;
		2360	}
		2361
		2362	$MAP_PREFETCH{$path} |= $load;
		2363
		2364	$MAP_PREFETCHER ||= cf::async {
		2365	$Coro::current->{desc} = "map prefetcher";
		2366
		2367	while (%MAP_PREFETCH) {
		2368	while (my ($k, $v) = each %MAP_PREFETCH) {
		2369	if (my $map = find $k) {
		2370	$map->load if $v;
		2371	}
		2372
		2373	delete $MAP_PREFETCH{$k};
		2374	}
		2375	}
		2376	undef $MAP_PREFETCHER;
		2377	};
		2378	$MAP_PREFETCHER->prio (6);
		2379
		2380	()
		2381	}
		2382
		2383	# common code, used by both ->save and ->swapout
		2384	sub _save {
		2385	my ($self) = @_;
		2386
		2387	$self->{last_save} = $cf::RUNTIME;
		2388
		2389	return unless $self->dirty;
		2390
		2391	my $save = $self->save_path; utf8::encode $save;
		2392	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2393
		2394	$self->{load_path} = $save;
		2395
		2396	return if $self->{deny_save};
		2397
		2398	local $self->{last_access} = $self->last_access;#d#
		2399
		2400	cf::async {
		2401	$Coro::current->{desc} = "map player save";
		2402	$_->contr->save for $self->players;
		2403	};
		2404
		2405	cf::get_slot 0.02;
		2406
		2407	if ($uniq) {
		2408	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2409	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2410	} else {
		2411	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2412	}
		2413	}
		2414
		2415	sub save {
		2416	my ($self) = @_;
		2417
		2418	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2419
		2420	$self->_save;
		2421	}
		2422
		2423	sub swap_out {
		2424	my ($self) = @_;
		2425
		2426	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2427
		2428	return if !$self->linkable;
		2429	return if $self->{deny_save};
		2430	return if $self->players;
		2431
		2432	# first deactivate the map and "unlink" it from the core
		2433	$self->deactivate;
		2434	$_->clear_links_to ($self) for values %cf::MAP;
		2435	$self->state (cf::MAP_SWAPPED);
		2436
		2437	# then atomically save
		2438	$self->_save;
		2439
		2440	# then free the map
		2441	$self->clear;
		2442	}
		2443
		2444	sub reset_at {
		2445	my ($self) = @_;
		2446
		2447	# TODO: safety, remove and allow resettable per-player maps
		2448	return 1e99 if $self->{deny_reset};
		2449
		2450	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2451	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2452
		2453	$time + $to
		2454	}
		2455
		2456	sub should_reset {
		2457	my ($self) = @_;
		2458
		2459	$self->reset_at <= $cf::RUNTIME
		2460	}
		2461
		2462	sub reset {
		2463	my ($self) = @_;
		2464
		2465	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2466
		2467	return if $self->players;
		2468
		2469	cf::trace "resetting map ", $self->path, "\n";
		2470
		2471	$self->state (cf::MAP_SWAPPED);
		2472
		2473	# need to save uniques path
		2474	unless ($self->{deny_save}) {
		2475	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2476
		2477	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2478	if $uniq;
		2479	}
		2480
		2481	delete $cf::MAP{$self->path};
		2482
		2483	$self->deactivate;
		2484	$_->clear_links_to ($self) for values %cf::MAP;
		2485	$self->clear;
		2486
		2487	$self->unlink_save;
		2488	$self->destroy;
		2489	}
		2490
		2491	my $nuke_counter = "aaaa";
		2492
		2493	sub nuke {
		2494	my ($self) = @_;
		2495
		2496	{
		2497	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2498
		2499	delete $cf::MAP{$self->path};
		2500
		2501	$self->unlink_save;
		2502
		2503	bless $self, "cf::map::wrap";
		2504	delete $self->{deny_reset};
		2505	$self->{deny_save} = 1;
		2506	$self->reset_timeout (1);
		2507	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2508
		2509	$cf::MAP{$self->path} = $self;
		2510	}
		2511
		2512	$self->reset; # polite request, might not happen
		2513	}
		2514
		2515	=item $maps = cf::map::tmp_maps
		2516
		2517	Returns an arrayref with all map paths of currently instantiated and saved
		2518	maps. May block.
		2519
		2520	=cut
		2521
		2522	sub tmp_maps() {
		2523	[
		2524	map {
		2525	utf8::decode $_;
		2526	/\.map$/
		2527	? normalise $_
		2528	: ()
		2529	} @{ aio_readdir $TMPDIR or [] }
		2530	]
		2531	}
		2532
		2533	=item $maps = cf::map::random_maps
		2534
		2535	Returns an arrayref with all map paths of currently instantiated and saved
		2536	random maps. May block.
		2537
		2538	=cut
		2539
		2540	sub random_maps() {
		2541	[
		2542	map {
		2543	utf8::decode $_;
		2544	/\.map$/
		2545	? normalise "?random/$_"
		2546	: ()
		2547	} @{ aio_readdir $RANDOMDIR or [] }
		2548	]
		2549	}
		2550
		2551	=item cf::map::unique_maps
		2552
		2553	Returns an arrayref of paths of all shared maps that have
		2554	instantiated unique items. May block.
		2555
		2556	=cut
		2557
		2558	sub unique_maps() {
		2559	[
		2560	map {
		2561	utf8::decode $_;
		2562	s/\.map$//; # TODO future compatibility hack
		2563	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2564	? ()
		2565	: normalise $_
		2566	} @{ aio_readdir $UNIQUEDIR or [] }
		2567	]
		2568	}
		2569
		2570	=item cf::map::static_maps
		2571
		2572	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2573	file in the shared directory excluding F</styles> and F</editor>). May
		2574	block.
		2575
		2576	=cut
		2577
		2578	sub static_maps() {
		2579	my @dirs = "";
		2580	my @maps;
		2581
		2582	while (@dirs) {
		2583	my $dir = shift @dirs;
		2584
		2585	next if $dir eq "/styles" || $dir eq "/editor";
		2586
		2587	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2588	or return;
		2589
		2590	for (@$files) {
		2591	s/\.map$// or next;
		2592	utf8::decode $_;
		2593	push @maps, "$dir/$_";
		2594	}
		2595
		2596	push @dirs, map "$dir/$_", @$dirs;
		2597	}
		2598
		2599	\@maps
		2600	}
		2601
		2602	=back
		2603
		2604	=head3 cf::object
		2605
		2606	=cut
		2607
		2608	package cf::object;
780		2609
781	=over 4	2610	=over 4
782		2611
783	=item cf::player::exists $login	2612	=item $ob->inv_recursive
784		2613
785	Returns true when the given account exists.	2614	Returns the inventory of the object I<and> their inventories, recursively,
		2615	but I<not> the object itself.
786		2616
787	=cut	2617	=cut
788		2618
789	sub cf::player::exists($) {	2619	sub inv_recursive_;
790	cf::player::find $_[0]	2620	sub inv_recursive_ {
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2621	map { $_, inv_recursive_ $_->inv } @_
792	}	2622	}
		2623
		2624	sub inv_recursive {
		2625	inv_recursive_ inv $_[0]
		2626	}
		2627
		2628	=item $ref = $ob->ref
		2629
		2630	Creates and returns a persistent reference to an object that can be stored as a string.
		2631
		2632	=item $ob = cf::object::deref ($refstring)
		2633
		2634	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2635	even if the object actually exists. May block.
		2636
		2637	=cut
		2638
		2639	sub deref {
		2640	my ($ref) = @_;
		2641
		2642	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2643	my ($uuid, $name) = ($1, $2);
		2644	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2645	or return;
		2646	$pl->ob->uuid eq $uuid
		2647	or return;
		2648
		2649	$pl->ob
		2650	} else {
		2651	warn "$ref: cannot resolve object reference\n";
		2652	undef
		2653	}
		2654	}
		2655
		2656	package cf;
		2657
		2658	=back
		2659
		2660	=head3 cf::object::player
		2661
		2662	=over 4
793		2663
794	=item $player_object->reply ($npc, $msg[, $flags])	2664	=item $player_object->reply ($npc, $msg[, $flags])
795		2665
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2666	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	2667	can be C<undef>. Does the right thing when the player is currently in a
798	dialogue with the given NPC character.	2668	dialogue with the given NPC character.
799		2669
800	=cut	2670	=cut
801		2671
		2672	our $SAY_CHANNEL = {
		2673	id => "say",
		2674	title => "Map",
		2675	reply => "say ",
		2676	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2677	};
		2678
		2679	our $CHAT_CHANNEL = {
		2680	id => "chat",
		2681	title => "Chat",
		2682	reply => "chat ",
		2683	tooltip => "Player chat and shouts, global to the server.",
		2684	};
		2685
802	# rough implementation of a future "reply" method that works	2686	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	2687	# with dialog boxes.
		2688	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	2689	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	2690	my ($self, $npc, $msg, $flags) = @_;
806		2691
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2692	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		2693
809	if ($self->{record_replies}) {	2694	if ($self->{record_replies}) {
810	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2695	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2696
811	} else {	2697	} else {
		2698	my $pl = $self->contr;
		2699
		2700	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2701	my $dialog = $pl->{npc_dialog};
		2702	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2703
		2704	} else {
812	$msg = $npc->name . " says: $msg" if $npc;	2705	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	2706	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2707	}
814	}	2708	}
815	}	2709	}
816		2710
817	=item $player->ext_reply ($msgid, $msgtype, %msg)	2711	=item $object->send_msg ($channel, $msg, $color, [extra...])
818		2712
819	Sends an ext reply to the player.
820
821	=cut	2713	=cut
822		2714
823	sub cf::player::ext_reply($$$%) {	2715	sub cf::object::send_msg {
824	my ($self, $id, %msg) = @_;	2716	my $pl = shift->contr
825		2717	or return;
826	$msg{msgid} = $id;	2718	$pl->send_msg (@_);
827
828	$self->send ("ext " . to_json \%msg);
829	}	2719	}
830		2720
831	=item $player_object->may ("access")	2721	=item $player_object->may ("access")
832		2722
833	Returns wether the given player is authorized to access resource "access"	2723	Returns wether the given player is authorized to access resource "access"
…		…
842	(ref $cf::CFG{"may_$access"}	2732	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2733	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	2734	: $cf::CFG{"may_$access"})
845	}	2735	}
846		2736
847	=cut	2737	=item $player_object->enter_link
848		2738
849	#############################################################################	2739	Freezes the player and moves him/her to a special map (C<{link}>).
		2740
		2741	The player should be reasonably safe there for short amounts of time (e.g.
		2742	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2743	though, as the player cannot control the character while it is on the link
		2744	map.
		2745
		2746	Will never block.
		2747
		2748	=item $player_object->leave_link ($map, $x, $y)
		2749
		2750	Moves the player out of the special C<{link}> map onto the specified
		2751	map. If the map is not valid (or omitted), the player will be moved back
		2752	to the location he/she was before the call to C<enter_link>, or, if that
		2753	fails, to the emergency map position.
		2754
		2755	Might block.
		2756
		2757	=cut
		2758
		2759	sub link_map {
		2760	unless ($LINK_MAP) {
		2761	$LINK_MAP = cf::map::find "{link}"
		2762	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2763	$LINK_MAP->load;
		2764	}
		2765
		2766	$LINK_MAP
		2767	}
		2768
		2769	sub cf::object::player::enter_link {
		2770	my ($self) = @_;
		2771
		2772	$self->deactivate_recursive;
		2773
		2774	++$self->{_link_recursion};
		2775
		2776	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2777
		2778	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2779	if $self->map && $self->map->{path} ne "{link}";
		2780
		2781	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2782	}
		2783
		2784	sub cf::object::player::leave_link {
		2785	my ($self, $map, $x, $y) = @_;
		2786
		2787	return unless $self->contr->active;
		2788
		2789	my $link_pos = delete $self->{_link_pos};
		2790
		2791	unless ($map) {
		2792	# restore original map position
		2793	($map, $x, $y) = @{ $link_pos || [] };
		2794	$map = cf::map::find $map;
		2795
		2796	unless ($map) {
		2797	($map, $x, $y) = @$EMERGENCY_POSITION;
		2798	$map = cf::map::find $map
		2799	or die "FATAL: cannot load emergency map\n";
		2800	}
		2801	}
		2802
		2803	($x, $y) = (-1, -1)
		2804	unless (defined $x) && (defined $y);
		2805
		2806	# use -1 or undef as default coordinates, not 0, 0
		2807	($x, $y) = ($map->enter_x, $map->enter_y)
		2808	if $x <= 0 && $y <= 0;
		2809
		2810	$map->load;
		2811
		2812	return unless $self->contr->active;
		2813
		2814	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2815	if ($self->enter_map ($map, $x, $y)) {
		2816	# entering was successful
		2817	delete $self->{_link_recursion};
		2818	# only activate afterwards, to support waiting in hooks
		2819	$self->activate_recursive;
		2820	}
		2821
		2822	}
		2823
		2824	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2825
		2826	Moves the player to the given map-path and coordinates by first freezing
		2827	her, loading and preparing them map, calling the provided $check callback
		2828	that has to return the map if sucecssful, and then unfreezes the player on
		2829	the new (success) or old (failed) map position. In either case, $done will
		2830	be called at the end of this process.
		2831
		2832	Note that $check will be called with a potentially non-loaded map, so if
		2833	it needs a loaded map it has to call C<< ->load >>.
		2834
		2835	=cut
		2836
		2837	our $GOTOGEN;
		2838
		2839	sub cf::object::player::goto {
		2840	my ($self, $path, $x, $y, $check, $done) = @_;
		2841
		2842	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2843	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2844	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2845	($path, $x, $y) = @$EMERGENCY_POSITION;
		2846	}
		2847
		2848	# do generation counting so two concurrent goto's will be executed in-order
		2849	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2850
		2851	$self->enter_link;
		2852
		2853	(async {
		2854	$Coro::current->{desc} = "player::goto $path $x $y";
		2855
		2856	# *tag paths override both path and x|y
		2857	if ($path =~ /^\*(.*)$/) {
		2858	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2859	my $ob = $obs[rand @obs];
		2860
		2861	# see if we actually can go there
		2862	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2863	$ob = $obs[rand @obs];
		2864	} else {
		2865	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2866	}
		2867	# else put us there anyways for now #d#
		2868
		2869	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2870	} else {
		2871	($path, $x, $y) = (undef, undef, undef);
		2872	}
		2873	}
		2874
		2875	my $map = eval {
		2876	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2877
		2878	if ($map) {
		2879	$map = $map->customise_for ($self);
		2880	$map = $check->($map, $x, $y, $self) if $check && $map;
		2881	} else {
		2882	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2883	}
		2884
		2885	$map
		2886	};
		2887
		2888	if ($@) {
		2889	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2890	LOG llevError | logBacktrace, Carp::longmess $@;
		2891	}
		2892
		2893	if ($gen == $self->{_goto_generation}) {
		2894	delete $self->{_goto_generation};
		2895	$self->leave_link ($map, $x, $y);
		2896	}
		2897
		2898	$done->($self) if $done;
		2899	})->prio (1);
		2900	}
		2901
		2902	=item $player_object->enter_exit ($exit_object)
		2903
		2904	=cut
		2905
		2906	sub parse_random_map_params {
		2907	my ($spec) = @_;
		2908
		2909	my $rmp = { # defaults
		2910	xsize => (cf::rndm 15, 40),
		2911	ysize => (cf::rndm 15, 40),
		2912	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2913	#layout => string,
		2914	};
		2915
		2916	for (split /\n/, $spec) {
		2917	my ($k, $v) = split /\s+/, $_, 2;
		2918
		2919	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2920	}
		2921
		2922	$rmp
		2923	}
		2924
		2925	sub prepare_random_map {
		2926	my ($exit) = @_;
		2927
		2928	# all this does is basically replace the /! path by
		2929	# a new random map path (?random/...) with a seed
		2930	# that depends on the exit object
		2931
		2932	my $rmp = parse_random_map_params $exit->msg;
		2933
		2934	if ($exit->map) {
		2935	$rmp->{region} = $exit->region->name;
		2936	$rmp->{origin_map} = $exit->map->path;
		2937	$rmp->{origin_x} = $exit->x;
		2938	$rmp->{origin_y} = $exit->y;
		2939
		2940	$exit->map->touch;
		2941	}
		2942
		2943	$rmp->{random_seed} ||= $exit->random_seed;
		2944
		2945	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2946	my $md5 = Digest::MD5::md5_hex $data;
		2947	my $meta = "$RANDOMDIR/$md5.meta";
		2948
		2949	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2950	aio_write $fh, 0, (length $data), $data, 0;
		2951	undef $fh;
		2952	aio_rename "$meta~", $meta;
		2953
		2954	my $slaying = "?random/$md5";
		2955
		2956	if ($exit->valid) {
		2957	$exit->slaying ("?random/$md5");
		2958	$exit->msg (undef);
		2959	}
		2960	}
		2961	}
		2962
		2963	sub cf::object::player::enter_exit {
		2964	my ($self, $exit) = @_;
		2965
		2966	return unless $self->type == cf::PLAYER;
		2967
		2968	$self->enter_link;
		2969
		2970	(async {
		2971	$Coro::current->{desc} = "enter_exit";
		2972
		2973	unless (eval {
		2974	$self->deactivate_recursive; # just to be sure
		2975
		2976	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2977	my $x = $exit->stats->hp;
		2978	my $y = $exit->stats->sp;
		2979
		2980	# special map handling
		2981	my $slaying = $exit->slaying;
		2982
		2983	# special map handling
		2984	if ($slaying eq "/!") {
		2985	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2986
		2987	prepare_random_map $exit
		2988	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		2989
		2990	$map = $exit->slaying;
		2991
		2992	} elsif ($slaying eq '!up') {
		2993	$map = $exit->map->tile_path (cf::TILE_UP);
		2994	$x = $exit->x;
		2995	$y = $exit->y;
		2996
		2997	} elsif ($slaying eq '!down') {
		2998	$map = $exit->map->tile_path (cf::TILE_DOWN);
		2999	$x = $exit->x;
		3000	$y = $exit->y;
		3001	}
		3002
		3003	$self->goto ($map, $x, $y);
		3004
		3005	# if exit is damned, update players death & WoR home-position
		3006	$self->contr->savebed ($map, $x, $y)
		3007	if $exit->flag (cf::FLAG_DAMNED);
		3008
		3009	1
		3010	}) {
		3011	$self->message ("Something went wrong deep within the deliantra server. "
		3012	. "I'll try to bring you back to the map you were before. "
		3013	. "Please report this to the dungeon master!",
		3014	cf::NDI_UNIQUE | cf::NDI_RED);
		3015
		3016	error "ERROR in enter_exit: $@";
		3017	$self->leave_link;
		3018	}
		3019	})->prio (1);
		3020	}
		3021
		3022	=head3 cf::client
		3023
		3024	=over 4
		3025
		3026	=item $client->send_drawinfo ($text, $flags)
		3027
		3028	Sends a drawinfo packet to the client. Circumvents output buffering so
		3029	should not be used under normal circumstances.
		3030
		3031	=cut
		3032
		3033	sub cf::client::send_drawinfo {
		3034	my ($self, $text, $flags) = @_;
		3035
		3036	utf8::encode $text;
		3037	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		3038	}
		3039
		3040	=item $client->send_big_packet ($pkt)
		3041
		3042	Like C<send_packet>, but tries to compress large packets, and fragments
		3043	them as required.
		3044
		3045	=cut
		3046
		3047	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3048
		3049	sub cf::client::send_big_packet {
		3050	my ($self, $pkt) = @_;
		3051
		3052	# try lzf for large packets
		3053	$pkt = "lzf " . Compress::LZF::compress $pkt
		3054	if 1024 <= length $pkt and $self->{can_lzf};
		3055
		3056	# split very large packets
		3057	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3058	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3059	$pkt = "frag";
		3060	}
		3061
		3062	$self->send_packet ($pkt);
		3063	}
		3064
		3065	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3066
		3067	Send a drawinfo or msg packet to the client, formatting the msg for the
		3068	client if neccessary. C<$type> should be a string identifying the type of
		3069	the message, with C<log> being the default. If C<$color> is negative, suppress
		3070	the message unless the client supports the msg packet.
		3071
		3072	=cut
		3073
		3074	# non-persistent channels (usually the info channel)
		3075	our %CHANNEL = (
		3076	"c/motd" => {
		3077	id => "infobox",
		3078	title => "MOTD",
		3079	reply => undef,
		3080	tooltip => "The message of the day",
		3081	},
		3082	"c/identify" => {
		3083	id => "infobox",
		3084	title => "Identify",
		3085	reply => undef,
		3086	tooltip => "Items recently identified",
		3087	},
		3088	"c/examine" => {
		3089	id => "infobox",
		3090	title => "Examine",
		3091	reply => undef,
		3092	tooltip => "Signs and other items you examined",
		3093	},
		3094	"c/shopinfo" => {
		3095	id => "infobox",
		3096	title => "Shop Info",
		3097	reply => undef,
		3098	tooltip => "What your bargaining skill tells you about the shop",
		3099	},
		3100	"c/book" => {
		3101	id => "infobox",
		3102	title => "Book",
		3103	reply => undef,
		3104	tooltip => "The contents of a note or book",
		3105	},
		3106	"c/lookat" => {
		3107	id => "infobox",
		3108	title => "Look",
		3109	reply => undef,
		3110	tooltip => "What you saw there",
		3111	},
		3112	"c/who" => {
		3113	id => "infobox",
		3114	title => "Players",
		3115	reply => undef,
		3116	tooltip => "Shows players who are currently online",
		3117	},
		3118	"c/body" => {
		3119	id => "infobox",
		3120	title => "Body Parts",
		3121	reply => undef,
		3122	tooltip => "Shows which body parts you posess and are available",
		3123	},
		3124	"c/statistics" => {
		3125	id => "infobox",
		3126	title => "Statistics",
		3127	reply => undef,
		3128	tooltip => "Shows your primary statistics",
		3129	},
		3130	"c/skills" => {
		3131	id => "infobox",
		3132	title => "Skills",
		3133	reply => undef,
		3134	tooltip => "Shows your experience per skill and item power",
		3135	},
		3136	"c/shopitems" => {
		3137	id => "infobox",
		3138	title => "Shop Items",
		3139	reply => undef,
		3140	tooltip => "Shows the items currently for sale in this shop",
		3141	},
		3142	"c/resistances" => {
		3143	id => "infobox",
		3144	title => "Resistances",
		3145	reply => undef,
		3146	tooltip => "Shows your resistances",
		3147	},
		3148	"c/pets" => {
		3149	id => "infobox",
		3150	title => "Pets",
		3151	reply => undef,
		3152	tooltip => "Shows information abotu your pets/a specific pet",
		3153	},
		3154	"c/perceiveself" => {
		3155	id => "infobox",
		3156	title => "Perceive Self",
		3157	reply => undef,
		3158	tooltip => "You gained detailed knowledge about yourself",
		3159	},
		3160	"c/uptime" => {
		3161	id => "infobox",
		3162	title => "Uptime",
		3163	reply => undef,
		3164	tooltip => "How long the server has been running since last restart",
		3165	},
		3166	"c/mapinfo" => {
		3167	id => "infobox",
		3168	title => "Map Info",
		3169	reply => undef,
		3170	tooltip => "Information related to the maps",
		3171	},
		3172	"c/party" => {
		3173	id => "party",
		3174	title => "Party",
		3175	reply => "gsay ",
		3176	tooltip => "Messages and chat related to your party",
		3177	},
		3178	"c/death" => {
		3179	id => "death",
		3180	title => "Death",
		3181	reply => undef,
		3182	tooltip => "Reason for and more info about your most recent death",
		3183	},
		3184	"c/say" => $SAY_CHANNEL,
		3185	"c/chat" => $CHAT_CHANNEL,
		3186	);
		3187
		3188	sub cf::client::send_msg {
		3189	my ($self, $channel, $msg, $color, @extra) = @_;
		3190
		3191	$msg = $self->pl->expand_cfpod ($msg)
		3192	unless $color & cf::NDI_VERBATIM;
		3193
		3194	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3195
		3196	# check predefined channels, for the benefit of C
		3197	if ($CHANNEL{$channel}) {
		3198	$channel = $CHANNEL{$channel};
		3199
		3200	$self->ext_msg (channel_info => $channel);
		3201	$channel = $channel->{id};
		3202
		3203	} elsif (ref $channel) {
		3204	# send meta info to client, if not yet sent
		3205	unless (exists $self->{channel}{$channel->{id}}) {
		3206	$self->{channel}{$channel->{id}} = $channel;
		3207	$self->ext_msg (channel_info => $channel);
		3208	}
		3209
		3210	$channel = $channel->{id};
		3211	}
		3212
		3213	return unless @extra || length $msg;
		3214
		3215	# default colour, mask it out
		3216	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3217	if $color & cf::NDI_DEF;
		3218
		3219	my $pkt = "msg "
		3220	. $self->{json_coder}->encode (
		3221	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3222	);
		3223
		3224	$self->send_big_packet ($pkt);
		3225	}
		3226
		3227	=item $client->ext_msg ($type, @msg)
		3228
		3229	Sends an ext event to the client.
		3230
		3231	=cut
		3232
		3233	sub cf::client::ext_msg($$@) {
		3234	my ($self, $type, @msg) = @_;
		3235
		3236	if ($self->extcmd == 2) {
		3237	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3238	} elsif ($self->extcmd == 1) { # TODO: remove
		3239	push @msg, msgtype => "event_$type";
		3240	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3241	}
		3242	}
		3243
		3244	=item $client->ext_reply ($msgid, @msg)
		3245
		3246	Sends an ext reply to the client.
		3247
		3248	=cut
		3249
		3250	sub cf::client::ext_reply($$@) {
		3251	my ($self, $id, @msg) = @_;
		3252
		3253	return unless $self->extcmd == 2;
		3254
		3255	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3256	}
		3257
		3258	=item $success = $client->query ($flags, "text", \&cb)
		3259
		3260	Queues a query to the client, calling the given callback with
		3261	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3262	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3263
		3264	Queries can fail, so check the return code. Or don't, as queries will
		3265	become reliable at some point in the future.
		3266
		3267	=cut
		3268
		3269	sub cf::client::query {
		3270	my ($self, $flags, $text, $cb) = @_;
		3271
		3272	return unless $self->state == ST_PLAYING
		3273	|| $self->state == ST_SETUP
		3274	|| $self->state == ST_CUSTOM;
		3275
		3276	$self->state (ST_CUSTOM);
		3277
		3278	utf8::encode $text;
		3279	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3280
		3281	$self->send_packet ($self->{query_queue}[0][0])
		3282	if @{ $self->{query_queue} } == 1;
		3283
		3284	1
		3285	}
		3286
		3287	cf::client->attach (
		3288	on_connect => sub {
		3289	my ($ns) = @_;
		3290
		3291	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3292	},
		3293	on_reply => sub {
		3294	my ($ns, $msg) = @_;
		3295
		3296	# this weird shuffling is so that direct followup queries
		3297	# get handled first
		3298	my $queue = delete $ns->{query_queue}
		3299	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3300
		3301	(shift @$queue)->[1]->($msg);
		3302	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3303
		3304	push @{ $ns->{query_queue} }, @$queue;
		3305
		3306	if (@{ $ns->{query_queue} } == @$queue) {
		3307	if (@$queue) {
		3308	$ns->send_packet ($ns->{query_queue}[0][0]);
		3309	} else {
		3310	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3311	}
		3312	}
		3313	},
		3314	on_exticmd => sub {
		3315	my ($ns, $buf) = @_;
		3316
		3317	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3318
		3319	if (ref $msg) {
		3320	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3321
		3322	my @reply;
		3323
		3324	if (my $cb = $EXTICMD{$type}) {
		3325	@reply = $cb->($ns, @payload);
		3326	}
		3327
		3328	$ns->ext_reply ($reply, @reply)
		3329	if $reply;
		3330
		3331	} else {
		3332	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3333	}
		3334
		3335	cf::override;
		3336	},
		3337	);
		3338
		3339	=item $client->async (\&cb)
		3340
		3341	Create a new coroutine, running the specified callback. The coroutine will
		3342	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3343	or loss of connection).
		3344
		3345	=cut
		3346
		3347	sub cf::client::async {
		3348	my ($self, $cb) = @_;
		3349
		3350	my $coro = &Coro::async ($cb);
		3351
		3352	$coro->on_destroy (sub {
		3353	delete $self->{_coro}{$coro+0};
		3354	});
		3355
		3356	$self->{_coro}{$coro+0} = $coro;
		3357
		3358	$coro
		3359	}
		3360
		3361	cf::client->attach (
		3362	on_client_destroy => sub {
		3363	my ($ns) = @_;
		3364
		3365	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3366	},
		3367	);
		3368
		3369	=back
		3370
850		3371
851	=head2 SAFE SCRIPTING	3372	=head2 SAFE SCRIPTING
852		3373
853	Functions that provide a safe environment to compile and execute	3374	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	3375	snippets of perl code without them endangering the safety of the server
…		…
861	our $safe = new Safe "safe";	3382	our $safe = new Safe "safe";
862	our $safe_hole = new Safe::Hole;	3383	our $safe_hole = new Safe::Hole;
863		3384
864	$SIG{FPE} = 'IGNORE';	3385	$SIG{FPE} = 'IGNORE';
865		3386
866	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3387	$safe->permit_only (Opcode::opset qw(
		3388	:base_core :base_mem :base_orig :base_math :base_loop
		3389	grepstart grepwhile mapstart mapwhile
		3390	sort time
		3391	));
867		3392
868	# here we export the classes and methods available to script code	3393	# here we export the classes and methods available to script code
869		3394
870	=pod	3395	=pod
871		3396
872	The following fucntions and emthods are available within a safe environment:	3397	The following functions and methods are available within a safe environment:
873		3398
874	cf::object contr pay_amount pay_player	3399	cf::object
		3400	contr pay_amount pay_player map x y force_find force_add destroy
		3401	insert remove name archname title slaying race decrease split
		3402	value
		3403
875	cf::object::player player	3404	cf::object::player
876	cf::player peaceful	3405	player
		3406
		3407	cf::player
		3408	peaceful
		3409
		3410	cf::map
		3411	trigger
877		3412
878	=cut	3413	=cut
879		3414
880	for (	3415	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	3416	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3417	insert remove inv nrof name archname title slaying race
		3418	decrease split destroy change_exp value msg lore send_msg)],
882	["cf::object::player" => qw(player)],	3419	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	3420	["cf::player" => qw(peaceful send_msg)],
		3421	["cf::map" => qw(trigger)],
884	) {	3422	) {
885	no strict 'refs';
886	my ($pkg, @funs) = @$_;	3423	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3424	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	3425	for @funs;
889	}	3426	}
890		3427
…		…
905		3442
906	my $qcode = $code;	3443	my $qcode = $code;
907	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3444	$qcode =~ s/"/‟/g; # not allowed in #line filenames
908	$qcode =~ s/\n/\\n/g;	3445	$qcode =~ s/\n/\\n/g;
909		3446
		3447	%vars = (_dummy => 0) unless %vars;
		3448
		3449	my @res;
910	local $_;	3450	local $_;
911	local @safe::cf::_safe_eval_args = values %vars;
912		3451
913	my $eval =	3452	my $eval =
914	"do {\n"	3453	"do {\n"
915	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3454	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
916	. "#line 0 \"{$qcode}\"\n"	3455	. "#line 0 \"{$qcode}\"\n"
917	. $code	3456	. $code
918	. "\n}"	3457	. "\n}"
919	;	3458	;
920		3459
		3460	if ($CFG{safe_eval}) {
921	sub_generation_inc;	3461	sub_generation_inc;
		3462	local @safe::cf::_safe_eval_args = values %vars;
922	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3463	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
923	sub_generation_inc;	3464	sub_generation_inc;
		3465	} else {
		3466	local @cf::_safe_eval_args = values %vars;
		3467	@res = wantarray ? eval eval : scalar eval $eval;
		3468	}
924		3469
925	if ($@) {	3470	if ($@) {
926	warn "$@";	3471	warn "$@",
927	warn "while executing safe code '$code'\n";	3472	"while executing safe code '$code'\n",
928	warn "with arguments " . (join " ", %vars) . "\n";	3473	"with arguments " . (join " ", %vars) . "\n";
929	}	3474	}
930		3475
931	wantarray ? @res : $res[0]	3476	wantarray ? @res : $res[0]
932	}	3477	}
933		3478
…		…
947	=cut	3492	=cut
948		3493
949	sub register_script_function {	3494	sub register_script_function {
950	my ($fun, $cb) = @_;	3495	my ($fun, $cb) = @_;
951		3496
952	no strict 'refs';	3497	$fun = "safe::$fun" if $CFG{safe_eval};
953	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3498	*$fun = $safe_hole->wrap ($cb);
954	}	3499	}
955		3500
956	=back	3501	=back
957		3502
958	=cut	3503	=cut
959		3504
960	#############################################################################	3505	#############################################################################
		3506	# the server's init and main functions
961		3507
962	=head2 EXTENSION DATABASE SUPPORT	3508	our %FACEHASH; # hash => idx, #d# HACK for http server
963		3509
964	Crossfire maintains a very simple database for extension use. It can	3510	sub load_facedata($) {
965	currently store anything that can be serialised using Storable, which	3511	my ($path) = @_;
966	excludes objects.
967		3512
968	The parameter C<$family> should best start with the name of the extension	3513	# HACK to clear player env face cache, we need some signal framework
969	using it, it should be unique.	3514	# for this (global event?)
		3515	%ext::player_env::MUSIC_FACE_CACHE = ();
970		3516
971	=over 4	3517	my $enc = JSON::XS->new->utf8->canonical->relaxed;
972		3518
973	=item $hashref = cf::db_get $family	3519	trace "loading facedata from $path\n";
974		3520
975	Return a hashref for use by the extension C<$family>, which can be	3521	my $facedata = decode_storable load_file $path;
976	modified. After modifications, you have to call C<cf::db_dirty> or
977	C<cf::db_sync>.
978		3522
979	=item $value = cf::db_get $family => $key	3523	$facedata->{version} == 2
		3524	or cf::cleanup "$path: version mismatch, cannot proceed.";
980		3525
981	Returns a single value from the database	3526	# patch in the exptable
		3527	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3528	$facedata->{resource}{"res/exp_table"} = {
		3529	type => FT_RSRC,
		3530	data => $exp_table,
		3531	hash => (Digest::MD5::md5 $exp_table),
		3532	};
		3533	cf::cede_to_tick;
982		3534
983	=item cf::db_put $family => $hashref	3535	{
		3536	my $faces = $facedata->{faceinfo};
984		3537
985	Stores the given family hashref into the database. Updates are delayed, if	3538	while (my ($face, $info) = each %$faces) {
986	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3539	my $idx = (cf::face::find $face) || cf::face::alloc $face;
987		3540
988	=item cf::db_put $family => $key => $value	3541	cf::face::set_visibility $idx, $info->{visibility};
		3542	cf::face::set_magicmap $idx, $info->{magicmap};
		3543	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3544	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3545	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3546	$FACEHASH{$info->{hash64}} = $idx;#d#
989		3547
990	Stores the given C<$value> in the family hash. Updates are delayed, if you	3548	cf::cede_to_tick;
991	want the data to be synced to disk immediately, use C<cf::db_sync>.	3549	}
992		3550
993	=item cf::db_dirty	3551	while (my ($face, $info) = each %$faces) {
		3552	next unless $info->{smooth};
994		3553
995	Marks the database as dirty, to be updated at a later time.	3554	my $idx = cf::face::find $face
		3555	or next;
996		3556
997	=item cf::db_sync	3557	if (my $smooth = cf::face::find $info->{smooth}) {
		3558	cf::face::set_smooth $idx, $smooth;
		3559	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3560	} else {
		3561	error "smooth face '$info->{smooth}' not found for face '$face'";
		3562	}
998		3563
999	Immediately write the database to disk I<if it is dirty>.	3564	cf::cede_to_tick;
		3565	}
		3566	}
1000		3567
1001	=cut	3568	{
		3569	my $anims = $facedata->{animinfo};
1002		3570
1003	our $DB;	3571	while (my ($anim, $info) = each %$anims) {
		3572	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3573	cf::cede_to_tick;
		3574	}
		3575
		3576	cf::anim::invalidate_all; # d'oh
		3577	}
		3578
		3579	{
		3580	my $res = $facedata->{resource};
		3581
		3582	while (my ($name, $info) = each %$res) {
		3583	if (defined (my $type = $info->{type})) {
		3584	# TODO: different hash - must free and use new index, or cache ixface data queue
		3585	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3586
		3587	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3588	cf::face::set_type $idx, $type;
		3589	cf::face::set_meta $idx, $type & 1 ? undef : $info->{meta}; # preserve meta unless prepended already
		3590	$FACEHASH{$info->{hash}} = $idx;#d#
		3591	} else {
		3592	# $RESOURCE{$name} = $info; # unused
		3593	}
		3594
		3595	cf::cede_to_tick;
		3596	}
		3597	}
		3598
		3599	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3600
		3601	1
		3602	}
		3603
		3604	register_exticmd fx_want => sub {
		3605	my ($ns, $want) = @_;
		3606
		3607	while (my ($k, $v) = each %$want) {
		3608	$ns->fx_want ($k, $v);
		3609	}
		3610	};
		3611
		3612	sub load_resource_file($) {
		3613	my $guard = lock_acquire "load_resource_file";
		3614
		3615	my $status = load_resource_file_ $_[0];
		3616	get_slot 0.1, 100;
		3617	cf::arch::commit_load;
		3618
		3619	$status
		3620	}
		3621
		3622	sub reload_regions {
		3623	# HACK to clear player env face cache, we need some signal framework
		3624	# for this (global event?)
		3625	%ext::player_env::MUSIC_FACE_CACHE = ();
		3626
		3627	load_resource_file "$MAPDIR/regions"
		3628	or die "unable to load regions file\n";
		3629
		3630	for (cf::region::list) {
		3631	$_->{match} = qr/$_->{match}/
		3632	if exists $_->{match};
		3633	}
		3634	}
		3635
		3636	sub reload_facedata {
		3637	load_facedata "$DATADIR/facedata"
		3638	or die "unable to load facedata\n";
		3639	}
		3640
		3641	sub reload_archetypes {
		3642	load_resource_file "$DATADIR/archetypes"
		3643	or die "unable to load archetypes\n";
		3644	}
		3645
		3646	sub reload_treasures {
		3647	load_resource_file "$DATADIR/treasures"
		3648	or die "unable to load treasurelists\n";
		3649	}
		3650
		3651	sub reload_sound {
		3652	trace "loading sound config from $DATADIR/sound\n";
		3653
		3654	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3655
		3656	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3657	my $sound = $soundconf->{compat}[$_]
		3658	or next;
		3659
		3660	my $face = cf::face::find "sound/$sound->[1]";
		3661	cf::sound::set $sound->[0] => $face;
		3662	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3663	}
		3664
		3665	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3666	my $face = cf::face::find "sound/$v";
		3667	cf::sound::set $k => $face;
		3668	}
		3669	}
		3670
		3671	sub reload_resources {
		3672	trace "reloading resource files...\n";
		3673
		3674	reload_exp_table;
		3675	reload_materials;
		3676	reload_facedata;
		3677	reload_sound;
		3678	reload_archetypes;
		3679	reload_regions;
		3680	reload_treasures;
		3681
		3682	trace "finished reloading resource files\n";
		3683	}
		3684
		3685	sub reload_config {
		3686	trace "reloading config file...\n";
		3687
		3688	my $config = load_file "$CONFDIR/config";
		3689	utf8::decode $config;
		3690	*CFG = decode_yaml $config;
		3691
		3692	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3693
		3694	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3695	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3696
		3697	if (exists $CFG{mlockall}) {
		3698	eval {
		3699	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3700	and die "WARNING: m(un)lockall failed: $!\n";
		3701	};
		3702	warn $@ if $@;
		3703	}
		3704	}
		3705
		3706	sub pidfile() {
		3707	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3708	or die "$PIDFILE: $!";
		3709	flock $fh, &Fcntl::LOCK_EX
		3710	or die "$PIDFILE: flock: $!";
		3711	$fh
		3712	}
		3713
		3714	# make sure only one server instance is running at any one time
		3715	sub atomic {
		3716	my $fh = pidfile;
		3717
		3718	my $pid = <$fh>;
		3719	kill 9, $pid if $pid > 0;
		3720
		3721	seek $fh, 0, 0;
		3722	print $fh $$;
		3723	}
		3724
		3725	sub main_loop {
		3726	trace "EV::loop starting\n";
		3727	if (1) {
		3728	EV::loop;
		3729	}
		3730	trace "EV::loop returned\n";
		3731	goto &main_loop unless $REALLY_UNLOOP;
		3732	}
		3733
		3734	sub main {
		3735	cf::init_globals; # initialise logging
		3736
		3737	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3738	LOG llevInfo, "Copyright (C) 2005-2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3739	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3740	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3741
		3742	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3743
		3744	# we must not ever block the main coroutine
		3745	local $Coro::idle = sub {
		3746	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3747	(async {
		3748	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3749	EV::loop EV::LOOP_ONESHOT;
		3750	})->prio (Coro::PRIO_MAX);
		3751	};
		3752
		3753	evthread_start IO::AIO::poll_fileno;
		3754
		3755	cf::sync_job {
		3756	cf::incloader::init ();
		3757
		3758	cf::init_anim;
		3759	cf::init_attackmess;
		3760	cf::init_dynamic;
		3761
		3762	cf::load_settings;
		3763
		3764	reload_resources;
		3765	reload_config;
		3766	db_init;
		3767
		3768	cf::init_uuid;
		3769	cf::init_signals;
		3770	cf::init_skills;
		3771
		3772	cf::init_beforeplay;
		3773
		3774	atomic;
		3775
		3776	load_extensions;
		3777
		3778	utime time, time, $RUNTIMEFILE;
		3779
		3780	# no (long-running) fork's whatsoever before this point(!)
		3781	use POSIX ();
		3782	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3783
		3784	cf::_post_init 0;
		3785	};
		3786
		3787	cf::object::thawer::errors_are_fatal 0;
		3788	info "parse errors in files are no longer fatal from this point on.\n";
		3789
		3790	AE::postpone {
		3791	undef &main; # free gobs of memory :)
		3792	};
		3793
		3794	goto &main_loop;
		3795	}
		3796
		3797	#############################################################################
		3798	# initialisation and cleanup
		3799
		3800	# install some emergency cleanup handlers
		3801	BEGIN {
		3802	our %SIGWATCHER = ();
		3803	for my $signal (qw(INT HUP TERM)) {
		3804	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3805	cf::cleanup "SIG$signal";
		3806	};
		3807	}
		3808	}
		3809
		3810	sub write_runtime_sync {
		3811	my $t0 = AE::time;
		3812
		3813	# first touch the runtime file to show we are still running:
		3814	# the fsync below can take a very very long time.
		3815
		3816	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3817
		3818	my $guard = cf::lock_acquire "write_runtime";
		3819
		3820	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3821	or return;
		3822
		3823	my $value = $cf::RUNTIME + 90 + 10;
		3824	# 10 is the runtime save interval, for a monotonic clock
		3825	# 60 allows for the watchdog to kill the server.
		3826
		3827	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3828	and return;
		3829
		3830	# always fsync - this file is important
		3831	aio_fsync $fh
		3832	and return;
		3833
		3834	# touch it again to show we are up-to-date
		3835	aio_utime $fh, undef, undef;
		3836
		3837	close $fh
		3838	or return;
		3839
		3840	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3841	and return;
		3842
		3843	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3844
		3845	1
		3846	}
		3847
		3848	our $uuid_lock;
		3849	our $uuid_skip;
		3850
		3851	sub write_uuid_sync($) {
		3852	$uuid_skip ||= $_[0];
		3853
		3854	return if $uuid_lock;
		3855	local $uuid_lock = 1;
		3856
		3857	my $uuid = "$LOCALDIR/uuid";
		3858
		3859	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3860	or return;
		3861
		3862	my $value = uuid_seq uuid_cur;
		3863
		3864	unless ($value) {
		3865	info "cowardly refusing to write zero uuid value!\n";
		3866	return;
		3867	}
		3868
		3869	my $value = uuid_str $value + $uuid_skip;
		3870	$uuid_skip = 0;
		3871
		3872	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3873	and return;
		3874
		3875	# always fsync - this file is important
		3876	aio_fsync $fh
		3877	and return;
		3878
		3879	close $fh
		3880	or return;
		3881
		3882	aio_rename "$uuid~", $uuid
		3883	and return;
		3884
		3885	trace "uuid file written ($value).\n";
		3886
		3887	1
		3888
		3889	}
		3890
		3891	sub write_uuid($$) {
		3892	my ($skip, $sync) = @_;
		3893
		3894	$sync ? write_uuid_sync $skip
		3895	: async { write_uuid_sync $skip };
		3896	}
		3897
		3898	sub emergency_save() {
		3899	my $freeze_guard = cf::freeze_mainloop;
		3900
		3901	info "emergency_perl_save: enter\n";
		3902
		3903	# this is a trade-off: we want to be very quick here, so
		3904	# save all maps without fsync, and later call a global sync
		3905	# (which in turn might be very very slow)
		3906	local $USE_FSYNC = 0;
		3907
		3908	cf::sync_job {
		3909	cf::write_runtime_sync; # external watchdog should not bark
		3910
		3911	# use a peculiar iteration method to avoid tripping on perl
		3912	# refcount bugs in for. also avoids problems with players
		3913	# and maps saved/destroyed asynchronously.
		3914	info "emergency_perl_save: begin player save\n";
		3915	for my $login (keys %cf::PLAYER) {
		3916	my $pl = $cf::PLAYER{$login} or next;
		3917	$pl->valid or next;
		3918	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3919	$pl->save;
		3920	}
		3921	info "emergency_perl_save: end player save\n";
		3922
		3923	cf::write_runtime_sync; # external watchdog should not bark
		3924
		3925	info "emergency_perl_save: begin map save\n";
		3926	for my $path (keys %cf::MAP) {
		3927	my $map = $cf::MAP{$path} or next;
		3928	$map->valid or next;
		3929	$map->save;
		3930	}
		3931	info "emergency_perl_save: end map save\n";
		3932
		3933	cf::write_runtime_sync; # external watchdog should not bark
		3934
		3935	info "emergency_perl_save: begin database checkpoint\n";
		3936	BDB::db_env_txn_checkpoint $DB_ENV;
		3937	info "emergency_perl_save: end database checkpoint\n";
		3938
		3939	info "emergency_perl_save: begin write uuid\n";
		3940	write_uuid_sync 1;
		3941	info "emergency_perl_save: end write uuid\n";
		3942
		3943	cf::write_runtime_sync; # external watchdog should not bark
		3944
		3945	trace "emergency_perl_save: syncing database to disk";
		3946	BDB::db_env_txn_checkpoint $DB_ENV;
		3947
		3948	info "emergency_perl_save: starting sync\n";
		3949	IO::AIO::aio_sync sub {
		3950	info "emergency_perl_save: finished sync\n";
		3951	};
		3952
		3953	cf::write_runtime_sync; # external watchdog should not bark
		3954
		3955	trace "emergency_perl_save: flushing outstanding aio requests";
		3956	while (IO::AIO::nreqs || BDB::nreqs) {
		3957	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		3958	}
		3959
		3960	cf::write_runtime_sync; # external watchdog should not bark
		3961	};
		3962
		3963	info "emergency_perl_save: leave\n";
		3964	}
		3965
		3966	sub post_cleanup {
		3967	my ($make_core) = @_;
		3968
		3969	IO::AIO::flush;
		3970
		3971	error Carp::longmess "post_cleanup backtrace"
		3972	if $make_core;
		3973
		3974	my $fh = pidfile;
		3975	unlink $PIDFILE if <$fh> == $$;
		3976	}
		3977
		3978	# a safer delete_package, copied from Symbol
		3979	sub clear_package($) {
		3980	my $pkg = shift;
		3981
		3982	# expand to full symbol table name if needed
		3983	unless ($pkg =~ /^main::.*::$/) {
		3984	$pkg = "main$pkg" if $pkg =~ /^::/;
		3985	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3986	$pkg .= '::' unless $pkg =~ /::$/;
		3987	}
		3988
		3989	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3990	my $stem_symtab = *{$stem}{HASH};
		3991
		3992	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3993	or return;
		3994
		3995	# clear all symbols
		3996	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3997	for my $name (keys %$leaf_symtab) {
		3998	_gv_clear *{"$pkg$name"};
		3999	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		4000	}
		4001	}
		4002
		4003	sub do_reload_perl() {
		4004	# can/must only be called in main
		4005	unless (in_main) {
		4006	error "can only reload from main coroutine";
		4007	return;
		4008	}
		4009
		4010	return if $RELOAD++;
		4011
		4012	my $t1 = AE::time;
		4013
		4014	while ($RELOAD) {
		4015	cf::get_slot 0.1, -1, "reload_perl";
		4016	info "perl_reload: reloading...";
		4017
		4018	trace "perl_reload: entering sync_job";
		4019
		4020	cf::sync_job {
		4021	#cf::emergency_save;
		4022
		4023	trace "perl_reload: cancelling all extension coros";
		4024	$_->cancel for values %EXT_CORO;
		4025	%EXT_CORO = ();
		4026
		4027	trace "perl_reload: removing commands";
		4028	%COMMAND = ();
		4029
		4030	trace "perl_reload: removing ext/exti commands";
		4031	%EXTCMD = ();
		4032	%EXTICMD = ();
		4033
		4034	trace "perl_reload: unloading/nuking all extensions";
		4035	for my $pkg (@EXTS) {
		4036	trace "... unloading $pkg";
		4037
		4038	if (my $cb = $pkg->can ("unload")) {
		4039	eval {
		4040	$cb->($pkg);
		4041	1
		4042	} or error "$pkg unloaded, but with errors: $@";
		4043	}
		4044
		4045	trace "... clearing $pkg";
		4046	clear_package $pkg;
		4047	}
		4048
		4049	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4050	while (my ($k, $v) = each %INC) {
		4051	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4052
		4053	trace "... unloading $k";
		4054	delete $INC{$k};
		4055
		4056	$k =~ s/\.pm$//;
		4057	$k =~ s/\//::/g;
		4058
		4059	if (my $cb = $k->can ("unload_module")) {
		4060	$cb->();
		4061	}
		4062
		4063	clear_package $k;
		4064	}
		4065
		4066	trace "perl_reload: getting rid of safe::, as good as possible";
		4067	clear_package "safe::$_"
		4068	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4069
		4070	trace "perl_reload: unloading cf.pm \"a bit\"";
		4071	delete $INC{"cf.pm"};
		4072	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4073
		4074	# don't, removes xs symbols, too,
		4075	# and global variables created in xs
		4076	#clear_package __PACKAGE__;
		4077
		4078	info "perl_reload: unload completed, starting to reload now";
		4079
		4080	trace "perl_reload: reloading cf.pm";
		4081	require cf;
		4082	cf::_connect_to_perl_1;
		4083
		4084	trace "perl_reload: loading config and database again";
		4085	cf::reload_config;
		4086
		4087	trace "perl_reload: loading extensions";
		4088	cf::load_extensions;
		4089
		4090	if ($REATTACH_ON_RELOAD) {
		4091	trace "perl_reload: reattaching attachments to objects/players";
		4092	_global_reattach; # objects, sockets
		4093	trace "perl_reload: reattaching attachments to maps";
		4094	reattach $_ for values %MAP;
		4095	trace "perl_reload: reattaching attachments to players";
		4096	reattach $_ for values %PLAYER;
		4097	}
		4098
		4099	cf::_post_init 1;
		4100
		4101	trace "perl_reload: leaving sync_job";
		4102
		4103	1
		4104	} or do {
		4105	error $@;
		4106	cf::cleanup "perl_reload: error, exiting.";
		4107	};
		4108
		4109	--$RELOAD;
		4110	}
		4111
		4112	$t1 = AE::time - $t1;
		4113	info "perl_reload: completed in ${t1}s\n";
		4114	};
		4115
		4116	our $RELOAD_WATCHER; # used only during reload
		4117
		4118	sub reload_perl() {
		4119	# doing reload synchronously and two reloads happen back-to-back,
		4120	# coro crashes during coro_state_free->destroy here.
		4121
		4122	$RELOAD_WATCHER ||= cf::async {
		4123	Coro::AIO::aio_wait cache_extensions;
		4124
		4125	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4126	do_reload_perl;
		4127	undef $RELOAD_WATCHER;
		4128	};
		4129	};
		4130	}
		4131
		4132	register_command "reload" => sub {
		4133	my ($who, $arg) = @_;
		4134
		4135	if ($who->flag (FLAG_WIZ)) {
		4136	$who->message ("reloading server.");
		4137	async {
		4138	$Coro::current->{desc} = "perl_reload";
		4139	reload_perl;
		4140	};
		4141	}
		4142	};
		4143
		4144	#############################################################################
		4145
		4146	my $bug_warning = 0;
		4147
		4148	sub wait_for_tick() {
		4149	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4150
		4151	$WAIT_FOR_TICK->wait;
		4152	}
		4153
		4154	sub wait_for_tick_begin() {
		4155	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4156
		4157	my $signal = new Coro::Signal;
		4158	push @WAIT_FOR_TICK_BEGIN, $signal;
		4159	$signal->wait;
		4160	}
		4161
		4162	sub tick {
		4163	if ($Coro::current != $Coro::main) {
		4164	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4165	unless ++$bug_warning > 10;
		4166	return;
		4167	}
		4168
		4169	cf::one_tick; # one server iteration
		4170
		4171	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4172
		4173	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4174	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4175	Coro::async_pool {
		4176	$Coro::current->{desc} = "runtime saver";
		4177	write_runtime_sync
		4178	or error "ERROR: unable to write runtime file: $!";
		4179	};
		4180	}
		4181
		4182	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4183	$sig->send;
		4184	}
		4185	$WAIT_FOR_TICK->broadcast;
		4186
		4187	$LOAD = ($NOW - $TICK_START) / $TICK;
		4188	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4189
		4190	if (0) {
		4191	if ($NEXT_TICK) {
		4192	my $jitter = $TICK_START - $NEXT_TICK;
		4193	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4194	debug "jitter $JITTER\n";#d#
		4195	}
		4196	}
		4197	}
1004		4198
1005	{	4199	{
1006	my $path = cf::localdir . "/database.pst";	4200	# configure BDB
1007		4201
1008	sub db_load() {	4202	BDB::min_parallel 16;
1009	warn "loading database $path\n";#d# remove later	4203	BDB::max_poll_reqs $TICK * 0.1;
1010	$DB = stat $path ? Storable::retrieve $path : { };	4204	#$AnyEvent::BDB::WATCHER->priority (1);
1011	}
1012		4205
1013	my $pid;	4206	unless ($DB_ENV) {
		4207	$DB_ENV = BDB::db_env_create;
		4208	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4209	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4210	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4211	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4212	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1014		4213
1015	sub db_save() {	4214	cf::sync_job {
1016	warn "saving database $path\n";#d# remove later
1017	waitpid $pid, 0 if $pid;
1018	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;
1022	cf::_exit 0 if defined $pid;
1023	}
1024	}
1025
1026	my $dirty;
1027
1028	sub db_sync() {
1029	db_save if $dirty;
1030	undef $dirty;
1031	}
1032
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1034	db_sync;
1035	});
1036
1037	sub db_dirty() {
1038	$dirty = 1;
1039	$idle->start;
1040	}
1041
1042	sub db_get($;$) {
1043	@_ >= 2
1044	? $DB->{$_[0]}{$_[1]}
1045	: ($DB->{$_[0]} ||= { })
1046	}
1047
1048	sub db_put($$;$) {
1049	if (@_ >= 3) {
1050	$DB->{$_[0]}{$_[1]} = $_[2];
1051	} else {	4215	eval {
1052	$DB->{$_[0]} = $_[1];	4216	BDB::db_env_open
1053	}	4217	$DB_ENV,
1054	db_dirty;	4218	$BDBDIR,
1055	}	4219	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4220	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4221	0666;
1056		4222
1057	attach_global	4223	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1058	prio => 10000,
1059	on_cleanup => sub {
1060	db_sync;
1061	},
1062	;
1063	}
1064
1065	#############################################################################
1066	# the server's main()
1067
1068	sub cfg_load {
1069	open my $fh, "<:utf8", cf::confdir . "/config"
1070	or return;
1071
1072	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;
1074	}
1075
1076	sub main {
1077	cfg_load;
1078	db_load;
1079	load_extensions;
1080	Event::loop;
1081	}
1082
1083	#############################################################################
1084	# initialisation
1085
1086	sub _perl_reload(&) {
1087	my ($msg) = @_;
1088
1089	$msg->("reloading...");
1090
1091	eval {
1092	# cancel all watchers
1093	$_->cancel for Event::all_watchers;
1094
1095	# unload all extensions
1096	for (@exts) {
1097	$msg->("unloading <$_>");
1098	unload_extension $_;
1099	}
1100
1101	# unload all modules loaded from $LIBDIR
1102	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104
1105	$msg->("removing <$k>");
1106	delete $INC{$k};
1107
1108	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;
1110
1111	if (my $cb = $k->can ("unload_module")) {
1112	$cb->();
1113	}	4224	};
1114		4225
1115	Symbol::delete_package $k;	4226	cf::cleanup "db_env_open(db): $@" if $@;
1116	}	4227	};
		4228	}
1117		4229
1118	# sync database to disk	4230	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1119	cf::db_sync;	4231	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1120
1121	# get rid of safe::, as good as possible
1122	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1124
1125	# remove register_script_function callbacks
1126	# TODO
1127
1128	# unload cf.pm "a bit"
1129	delete $INC{"cf.pm"};
1130
1131	# don't, removes xs symbols, too,
1132	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;
1134
1135	# reload cf.pm
1136	$msg->("reloading cf.pm");
1137	require cf;
1138
1139	# load config and database again
1140	cf::cfg_load;
1141	cf::db_load;
1142
1143	# load extensions
1144	$msg->("load extensions");
1145	cf::load_extensions;
1146
1147	# reattach attachments to objects
1148	$msg->("reattach");
1149	_global_reattach;
1150	};	4232	};
1151	$msg->($@) if $@;	4233	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1152		4234	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1153	$msg->("reloaded");
1154	};
1155
1156	sub perl_reload() {
1157	_perl_reload {
1158	warn $_[0];
1159	print "$_[0]\n";
1160	};	4235	};
		4236	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4237	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4238	};
1161	}	4239	}
1162		4240
1163	register_command "perl-reload", 0, sub {	4241	{
		4242	# configure IO::AIO
		4243
		4244	IO::AIO::min_parallel 8;
		4245	IO::AIO::max_poll_time $TICK * 0.1;
		4246	undef $AnyEvent::AIO::WATCHER;
		4247	}
		4248
		4249	our $_log_backtrace;
		4250	our $_log_backtrace_last;
		4251
		4252	sub _log_backtrace {
1164	my ($who, $arg) = @_;	4253	my ($msg, @addr) = @_;
1165		4254
1166	if ($who->flag (FLAG_WIZ)) {	4255	$msg =~ s/\n$//;
1167	_perl_reload {	4256
1168	warn $_[0];	4257	if ($_log_backtrace_last eq $msg) {
1169	$who->message ($_[0]);	4258	LOG llevInfo, "[ABT] $msg\n";
		4259	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4260	# limit the # of concurrent backtraces
		4261	} elsif ($_log_backtrace < 2) {
		4262	$_log_backtrace_last = $msg;
		4263	++$_log_backtrace;
		4264	my $perl_bt = Carp::longmess $msg;
		4265	async {
		4266	$Coro::current->{desc} = "abt $msg";
		4267
		4268	my @bt = fork_call {
		4269	@addr = map { sprintf "%x", $_ } @addr;
		4270	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4271	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4272	or die "addr2line: $!";
		4273
		4274	my @funcs;
		4275	my @res = <$fh>;
		4276	chomp for @res;
		4277	while (@res) {
		4278	my ($func, $line) = splice @res, 0, 2, ();
		4279	push @funcs, "[$func] $line";
		4280	}
		4281
		4282	@funcs
		4283	};
		4284
		4285	LOG llevInfo, "[ABT] $perl_bt\n";
		4286	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4287	LOG llevInfo, "[ABT] $_\n" for @bt;
		4288	--$_log_backtrace;
1170	};	4289	};
1171	}	4290	} else {
1172	};	4291	LOG llevInfo, "[ABT] $msg\n";
1173		4292	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;
1177
1178	$TICK_WATCHER = Event->timer (
1179	prio => 1,
1180	async => 1,
1181	at => $NEXT_TICK || 1,
1182	cb => sub {
1183	cf::server_tick; # one server iteration
1184
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;
1187
1188	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1190
1191	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;
1193	},	4293	}
1194	);	4294	}
1195		4295
1196	IO::AIO::max_poll_time $TICK * 0.2;	4296	# load additional modules
		4297	require "cf/$_.pm" for @EXTRA_MODULES;
		4298	cf::_connect_to_perl_2;
1197		4299
1198	Event->io (fd => IO::AIO::poll_fileno,	4300	END { cf::emergency_save }
1199	poll => 'r',
1200	prio => 5,
1201	cb => \&IO::AIO::poll_cb);
1202		4301
1203	1	4302	1
1204		4303

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