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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.82 by root, Sun Dec 3 20:59:52 2006 UTC vs.
Revision 1.598 by root, Sun Nov 11 02:38:10 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 AnyEvent ();
		38	use AnyEvent::IO ();
		39	use AnyEvent::DNS ();
		40
		41	use Coro ();
		42	use Coro::State;
		43	use Coro::Handle;
		44	use Coro::EV;
		45	use Coro::AnyEvent;
		46	use Coro::Timer;
		47	use Coro::Signal;
		48	use Coro::Semaphore;
		49	use Coro::SemaphoreSet;
		50	use Coro::AnyEvent;
		51	use Coro::AIO;
		52	use Coro::BDB 1.6;
		53	use Coro::Storable;
		54	use Coro::Util ();
		55
		56	use Guard ();
		57	use JSON::XS 2.01 ();
		58	use BDB ();
		59	use Data::Dumper;
		60	use Fcntl;
		61	use YAML::XS ();
10	use IO::AIO ();	62	use IO::AIO ();
11	use YAML::Syck ();	63	use Compress::LZF;
12	use Time::HiRes;	64	use Digest::MD5 ();
13	use Event;
14	$Event::Eval = 1; # no idea why this is required, but it is
15		65
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	66	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		67
19	use strict;	68	# configure various modules to our taste
		69	#
		70	$Storable::canonical = 1; # reduce rsync transfers
		71	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
20		72
21	_init_vars;	73	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
22		74
		75	# make sure c-lzf reinitialises itself
		76	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		77	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		78
		79	# strictly for debugging
		80	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		81
		82	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		83
		84	our @ORIG_INC;
		85
23	our %COMMAND = ();	86	our %COMMAND = ();
		87	our %COMMAND_TIME = ();
		88
		89	our @EXTS = (); # list of extension package names
		90	our %EXTCMD = ();
		91	our %EXTACMD = ();
		92	our %EXTICMD = ();
		93	our %EXTIACMD = ();
		94	our %EXT_CORO = (); # coroutines bound to extensions
		95	our %EXT_MAP = (); # pluggable maps
		96
		97	our $RELOAD; # number of reloads so far, non-zero while in reload
24	our @EVENT;	98	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	99	our @REFLECT; # set by XS
		100	our %REFLECT; # set by us
26		101
27	our $TICK = MAX_TIME * 1e-6;	102	our $CONFDIR = confdir;
28	our $TICK_WATCHER;	103
		104	our $DATADIR = datadir;
		105	our $LIBDIR = "$DATADIR/ext";
		106	our $PODDIR = "$DATADIR/pod";
		107	our $MAPDIR = "$DATADIR/" . mapdir;
		108
		109	our $LOCALDIR = localdir;
		110	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		111	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		112	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		113	our $RANDOMDIR = "$LOCALDIR/random";
		114	our $BDBDIR = "$LOCALDIR/db";
		115	our $PIDFILE = "$LOCALDIR/pid";
		116	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		117
		118	#our %RESOURCE; # unused
		119
		120	our $OUTPUT_RATE_MIN = 3000;
		121	our $OUTPUT_RATE_MAX = 1000000;
		122
		123	our $MAX_LINKS = 32; # how many chained exits to follow
		124	our $VERBOSE_IO = 1;
		125
		126	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		127	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
29	our $NEXT_TICK;	128	our $NEXT_TICK;
		129	our $USE_FSYNC = 1; # use fsync to write maps - default on
		130
		131	our $BDB_DEADLOCK_WATCHER;
		132	our $BDB_CHECKPOINT_WATCHER;
		133	our $BDB_TRICKLE_WATCHER;
		134	our $DB_ENV;
		135
		136	our @EXTRA_MODULES = qw(pod match mapscript incloader);
30		137
31	our %CFG;	138	our %CFG;
		139	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
32		140
33	our $uptime;	141	our $UPTIME; $UPTIME ||= time;
		142	our $RUNTIME = 0;
		143	our $SERVER_TICK = 0;
		144	our $NOW;
34		145
35	$uptime ||= time;	146	our (%PLAYER, %PLAYER_LOADING); # all users
		147	our (%MAP, %MAP_LOADING ); # all maps
		148	our $LINK_MAP; # the special {link} map, which is always available
		149
		150	# used to convert map paths into valid unix filenames by replacing / by ∕
		151	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		152
		153	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		154	our $LOADAVG; # same thing, but with alpha-smoothing
		155	our $JITTER; # average jitter
		156	our $TICK_START; # for load detecting purposes
		157
		158	our @POST_INIT;
		159
		160	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		161	our $REALLY_UNLOOP; # never set to true, please :)
		162
		163	our $WAIT_FOR_TICK = new Coro::Signal;
		164	our @WAIT_FOR_TICK_BEGIN;
		165
		166	binmode STDOUT;
		167	binmode STDERR;
		168
		169	# read virtual server time, if available
		170	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		171	open my $fh, "<", $RUNTIMEFILE
		172	or die "unable to read $RUNTIMEFILE file: $!";
		173	$RUNTIME = <$fh> + 0.;
		174	}
		175
		176	eval "sub TICK() { $TICK } 1" or die;
		177
		178	mkdir $_
		179	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		180
		181	our $EMERGENCY_POSITION;
		182
		183	sub cf::map::normalise;
		184
		185	sub in_main() {
		186	$Coro::current == $Coro::main
		187	}
36		188
37	#############################################################################	189	#############################################################################
38		190
		191	%REFLECT = ();
		192	for (@REFLECT) {
		193	my $reflect = JSON::XS::decode_json $_;
		194	$REFLECT{$reflect->{class}} = $reflect;
		195	}
		196
		197	# this is decidedly evil
		198	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		199
		200	#############################################################################
		201
39	=head2 GLOBAL VARIABLES	202	=head2 GLOBAL VARIABLES
40		203
41	=over 4	204	=over 4
42		205
43	=item $cf::LIBDIR	206	=item $cf::UPTIME
44		207
45	The perl library directory, where extensions and cf-specific modules can	208	The timestamp of the server start (so not actually an "uptime").
46	be found. It will be added to C<@INC> automatically.	209
		210	=item $cf::SERVER_TICK
		211
		212	An unsigned integer that starts at zero when the server is started and is
		213	incremented on every tick.
		214
		215	=item $cf::NOW
		216
		217	The (real) time of the last (current) server tick - updated before and
		218	after tick processing, so this is useful only as a rough "what time is it
		219	now" estimate.
47		220
48	=item $cf::TICK	221	=item $cf::TICK
49		222
50	The interval between server ticks, in seconds.	223	The interval between each server tick, in seconds.
		224
		225	=item $cf::RUNTIME
		226
		227	The time this server has run, starts at 0 and is increased by $cf::TICK on
		228	every server tick.
		229
		230	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		231	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		232	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		233
		234	Various directories - "/etc", read-only install directory, perl-library
		235	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		236	unique-items directory, player file directory, random maps directory and
		237	database environment.
		238
		239	=item $cf::LOADAVG
		240
		241	The current CPU load on the server (alpha-smoothed), as a value between 0
		242	(none) and 1 (overloaded), indicating how much time is spent on processing
		243	objects per tick. Healthy values are < 0.5.
		244
		245	=item $cf::LOAD
		246
		247	The raw value load value from the last tick.
51		248
52	=item %cf::CFG	249	=item %cf::CFG
53		250
54	Configuration for the server, loaded from C</etc/crossfire/config>, or	251	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
55	from wherever your confdir points to.	252	from wherever your confdir points to.
56		253
		254	=item cf::wait_for_tick, cf::wait_for_tick_begin
		255
		256	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		257	returns directly I<after> the tick processing (and consequently, can only wake one thread
		258	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		259
		260	Note that cf::Wait_for_tick will immediately return when the server is not
		261	ticking, making it suitable for small pauses in threads that need to run
		262	when the server is paused. If that is not applicable (i.e. you I<really>
		263	want to wait, use C<$cf::WAIT_FOR_TICK>).
		264
		265	=item $cf::WAIT_FOR_TICK
		266
		267	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		268	variable contains a L<Coro::Signal> that is broadcats after every server
		269	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		270	next server tick.
		271
		272	=cut
		273
		274	sub wait_for_tick();
		275	sub wait_for_tick_begin();
		276
		277	=item @cf::INVOKE_RESULTS
		278
		279	This array contains the results of the last C<invoke ()> call. When
		280	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		281	that call.
		282
		283	=item %cf::REFLECT
		284
		285	Contains, for each (C++) class name, a hash reference with information
		286	about object members (methods, scalars, arrays and flags) and other
		287	metadata, which is useful for introspection.
		288
57	=back	289	=back
58		290
59	=cut	291	=cut
60		292
61	BEGIN {	293	sub error(@) { LOG llevError, join "", @_ }
62	*CORE::GLOBAL::warn = sub {	294	sub warn (@) { LOG llevWarn , join "", @_ }
		295	sub info (@) { LOG llevInfo , join "", @_ }
		296	sub debug(@) { LOG llevDebug, join "", @_ }
		297	sub trace(@) { LOG llevTrace, join "", @_ }
		298
		299	$Coro::State::WARNHOOK = sub {
63	my $msg = join "", @_;	300	my $msg = join "", @_;
		301
64	$msg .= "\n"	302	$msg .= "\n"
65	unless $msg =~ /\n$/;	303	unless $msg =~ /\n$/;
66		304
67	print STDERR "cfperl: $msg";	305	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
68	LOG llevError, "cfperl: $msg";
69	};
70	}
71		306
		307	LOG llevWarn, $msg;
		308	};
		309
		310	$Coro::State::DIEHOOK = sub {
		311	return unless $^S eq 0; # "eq", not "=="
		312
		313	error Carp::longmess $_[0];
		314
		315	if (in_main) {#d#
		316	error "DIEHOOK called in main context, Coro bug?\n";#d#
		317	return;#d#
		318	}#d#
		319
		320	# kill coroutine otherwise
		321	Coro::terminate
		322	};
		323
		324	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		325	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		326	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		327	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		328	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		329	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
72	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	330	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
73		331
74	# we bless all objects into (empty) derived classes to force a method lookup	332	# we bless all objects into (empty) derived classes to force a method lookup
75	# within the Safe compartment.	333	# within the Safe compartment.
76	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	334	for my $pkg (qw(
77	no strict 'refs';	335	cf::global cf::attachable
		336	cf::object cf::object::player
		337	cf::client cf::player
		338	cf::arch cf::living
		339	cf::map cf::mapspace
		340	cf::party cf::region
		341	)) {
78	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	342	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79	}	343	}
80		344
81	$Event::DIED = sub {	345	$EV::DIED = sub {
82	warn "error in event callback: @_";	346	warn "error in event callback: $@";
83	};	347	};
84		348
85	my %ext_pkg;	349	#############################################################################
86	my @exts;	350
87	my @hook;	351	sub fork_call(&@);
88	my %command;	352	sub get_slot($;$$);
89	my %extcmd;	353
		354	#############################################################################
90		355
91	=head2 UTILITY FUNCTIONS	356	=head2 UTILITY FUNCTIONS
92		357
93	=over 4	358	=over 4
94		359
95	=cut	360	=item dumpval $ref
96		361
97	use JSON::Syck (); # TODO# replace by JSON::PC once working	362	=cut
98		363
		364	sub dumpval {
		365	eval {
		366	local $SIG{__DIE__};
		367	my $d;
		368	if (1) {
		369	$d = new Data::Dumper([$_[0]], ["*var"]);
		370	$d->Terse(1);
		371	$d->Indent(2);
		372	$d->Quotekeys(0);
		373	$d->Useqq(1);
		374	#$d->Bless(...);
		375	$d->Seen($_[1]) if @_ > 1;
		376	$d = $d->Dump();
		377	}
		378	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		379	$d
		380	} || "[unable to dump $_[0]: '$@']";
		381	}
		382
		383	=item $scalar = cf::load_file $path
		384
		385	Loads the given file from path and returns its contents. Croaks on error
		386	and can block.
		387
		388	=cut
		389
		390	sub load_file($) {
		391	0 <= aio_load $_[0], my $data
		392	or Carp::croak "$_[0]: $!";
		393
		394	$data
		395	}
		396
		397	=item $success = cf::replace_file $path, $data, $sync
		398
		399	Atomically replaces the file at the given $path with new $data, and
		400	optionally $sync the data to disk before replacing the file.
		401
		402	=cut
		403
		404	sub replace_file($$;$) {
		405	my ($path, $data, $sync) = @_;
		406
		407	my $lock = cf::lock_acquire ("replace_file:$path");
		408
		409	my $fh = aio_open "$path~", Fcntl::O_WRONLY | Fcntl::O_CREAT | Fcntl::O_TRUNC, 0644
		410	or return;
		411
		412	$data = $data->() if ref $data;
		413
		414	length $data == aio_write $fh, 0, (length $data), $data, 0
		415	or return;
		416
		417	!$sync
		418	or !aio_fsync $fh
		419	or return;
		420
		421	aio_close $fh
		422	and return;
		423
		424	aio_rename "$path~", $path
		425	and return;
		426
		427	if ($sync) {
		428	$path =~ s%/[^/]*$%%;
		429	aio_pathsync $path;
		430	}
		431
		432	1
		433	}
		434
99	=item $ref = cf::from_json $json	435	=item $ref = cf::decode_json $json
100		436
101	Converts a JSON string into the corresponding perl data structure.	437	Converts a JSON string into the corresponding perl data structure.
102		438
103	=cut
104
105	sub from_json($) {
106	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
107	JSON::Syck::Load $_[0]
108	}
109
110	=item $json = cf::to_json $ref	439	=item $json = cf::encode_json $ref
111		440
112	Converts a perl data structure into its JSON representation.	441	Converts a perl data structure into its JSON representation.
113		442
114	=cut	443	=cut
115		444
116	sub to_json($) {	445	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
117	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	446
118	JSON::Syck::Dump $_[0]	447	sub encode_json($) { $json_coder->encode ($_[0]) }
		448	sub decode_json($) { $json_coder->decode ($_[0]) }
		449
		450	=item $ref = cf::decode_storable $scalar
		451
		452	Same as Coro::Storable::thaw, so blocks.
		453
		454	=cut
		455
		456	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		457
		458	=item $ref = cf::decode_yaml $scalar
		459
		460	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		461
		462	=cut
		463
		464	sub decode_yaml($) {
		465	fork_call { YAML::XS::Load $_[0] } @_
		466	}
		467
		468	=item $scalar = cf::unlzf $scalar
		469
		470	Same as Compress::LZF::compress, but takes server ticks into account, so
		471	blocks.
		472
		473	=cut
		474
		475	sub unlzf($) {
		476	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		477	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		478	Compress::LZF::decompress $_[0]
		479	}
		480
		481	=item cf::post_init { BLOCK }
		482
		483	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		484	but I<before> the server starts ticking again.
		485
		486	The codeblock will have a single boolean argument to indicate whether this
		487	is a reload or not.
		488
		489	=cut
		490
		491	sub post_init(&) {
		492	push @POST_INIT, shift;
		493	}
		494
		495	sub _post_init {
		496	trace "running post_init jobs";
		497
		498	# run them in parallel...
		499
		500	my @join;
		501
		502	while () {
		503	push @join, map &Coro::async ($_, 0), @POST_INIT;
		504	@POST_INIT = ();
		505
		506	@join or last;
		507
		508	(pop @join)->join;
		509	}
		510	}
		511
		512	=item cf::lock_wait $string
		513
		514	Wait until the given lock is available. See cf::lock_acquire.
		515
		516	=item my $lock = cf::lock_acquire $string
		517
		518	Wait until the given lock is available and then acquires it and returns
		519	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		520	for example when the coroutine gets canceled), the lock is automatically
		521	returned.
		522
		523	Locks are *not* recursive, locking from the same coro twice results in a
		524	deadlocked coro.
		525
		526	Lock names should begin with a unique identifier (for example, cf::map::find
		527	uses map_find and cf::map::load uses map_load).
		528
		529	=item $locked = cf::lock_active $string
		530
		531	Return true if the lock is currently active, i.e. somebody has locked it.
		532
		533	=cut
		534
		535	our $LOCKS = new Coro::SemaphoreSet;
		536
		537	sub lock_wait($) {
		538	$LOCKS->wait ($_[0]);
		539	}
		540
		541	sub lock_acquire($) {
		542	$LOCKS->guard ($_[0])
		543	}
		544
		545	sub lock_active($) {
		546	$LOCKS->count ($_[0]) < 1
		547	}
		548
		549	sub freeze_mainloop {
		550	tick_inhibit_inc;
		551
		552	&Guard::guard (\&tick_inhibit_dec);
		553	}
		554
		555	=item cf::periodic $interval, $cb
		556
		557	Like EV::periodic, but randomly selects a starting point so that the actions
		558	get spread over time.
		559
		560	=cut
		561
		562	sub periodic($$) {
		563	my ($interval, $cb) = @_;
		564
		565	my $start = rand List::Util::min 180, $interval;
		566
		567	EV::periodic $start, $interval, 0, $cb
		568	}
		569
		570	=item cf::get_slot $time[, $priority[, $name]]
		571
		572	Allocate $time seconds of blocking CPU time at priority C<$priority>
		573	(default: 0): This call blocks and returns only when you have at least
		574	C<$time> seconds of cpu time till the next tick. The slot is only valid
		575	till the next cede.
		576
		577	Background jobs should use a priority les than zero, interactive jobs
		578	should use 100 or more.
		579
		580	The optional C<$name> can be used to identify the job to run. It might be
		581	used for statistical purposes and should identify the same time-class.
		582
		583	Useful for short background jobs.
		584
		585	=cut
		586
		587	our @SLOT_QUEUE;
		588	our $SLOT_QUEUE;
		589	our $SLOT_DECAY = 0.9;
		590
		591	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		592	$SLOT_QUEUE = Coro::async {
		593	$Coro::current->desc ("timeslot manager");
		594
		595	my $signal = new Coro::Signal;
		596	my $busy;
		597
		598	while () {
		599	next_job:
		600
		601	my $avail = cf::till_tick;
		602
		603	for (0 .. $#SLOT_QUEUE) {
		604	if ($SLOT_QUEUE[$_][0] <= $avail) {
		605	$busy = 0;
		606	my $job = splice @SLOT_QUEUE, $_, 1, ();
		607	$job->[2]->send;
		608	Coro::cede;
		609	goto next_job;
		610	} else {
		611	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		612	}
		613	}
		614
		615	if (@SLOT_QUEUE) {
		616	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		617	$WAIT_FOR_TICK->wait;
		618	} else {
		619	$busy = 0;
		620	Coro::schedule;
		621	}
		622	}
		623	};
		624
		625	sub get_slot($;$$) {
		626	return if tick_inhibit || $Coro::current == $Coro::main;
		627
		628	my ($time, $pri, $name) = @_;
		629
		630	$time = clamp $time, 0.01, $TICK * .6;
		631
		632	my $sig = new Coro::Signal;
		633
		634	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		635	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		636	$SLOT_QUEUE->ready;
		637	$sig->wait;
		638	}
		639
		640	=item cf::async { BLOCK }
		641
		642	Currently the same as Coro::async_pool, meaning you cannot use
		643	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		644	thing you are allowed to do is call C<prio> on it.
		645
		646	=cut
		647
		648	BEGIN { *async = \&Coro::async_pool }
		649
		650	=item cf::sync_job { BLOCK }
		651
		652	The design of Deliantra requires that the main coroutine ($Coro::main)
		653	is always able to handle events or runnable, as Deliantra is only
		654	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		655	acceptable.
		656
		657	If it must be done, put the blocking parts into C<sync_job>. This will run
		658	the given BLOCK in another coroutine while waiting for the result. The
		659	server will be frozen during this time, so the block should either finish
		660	fast or be very important.
		661
		662	=cut
		663
		664	sub sync_job(&) {
		665	my ($job) = @_;
		666
		667	if (in_main) {
		668	my $time = AE::time;
		669
		670	# this is the main coro, too bad, we have to block
		671	# till the operation succeeds, freezing the server :/
		672
		673	#LOG llevError, Carp::longmess "sync job";#d#
		674
		675	my $freeze_guard = freeze_mainloop;
		676
		677	my $busy = 1;
		678	my @res;
		679
		680	(async {
		681	$Coro::current->desc ("sync job coro");
		682	@res = eval { $job->() };
		683	error $@ if $@;
		684	undef $busy;
		685	})->prio (Coro::PRIO_MAX);
		686
		687	while ($busy) {
		688	if (Coro::nready) {
		689	Coro::cede_notself;
		690	} else {
		691	EV::loop EV::LOOP_ONESHOT;
		692	}
		693	}
		694
		695	my $time = AE::time - $time;
		696
		697	$TICK_START += $time; # do not account sync jobs to server load
		698
		699	wantarray ? @res : $res[0]
		700	} else {
		701	# we are in another coroutine, how wonderful, everything just works
		702
		703	$job->()
		704	}
		705	}
		706
		707	=item $coro = cf::async_ext { BLOCK }
		708
		709	Like async, but this coro is automatically being canceled when the
		710	extension calling this is being unloaded.
		711
		712	=cut
		713
		714	sub async_ext(&) {
		715	my $cb = shift;
		716
		717	my $coro = &Coro::async ($cb);
		718
		719	$coro->on_destroy (sub {
		720	delete $EXT_CORO{$coro+0};
		721	});
		722	$EXT_CORO{$coro+0} = $coro;
		723
		724	$coro
		725	}
		726
		727	=item fork_call { }, @args
		728
		729	Executes the given code block with the given arguments in a seperate
		730	process, returning the results. Everything must be serialisable with
		731	Coro::Storable. May, of course, block. Note that the executed sub may
		732	never block itself or use any form of event handling.
		733
		734	=cut
		735
		736	sub post_fork {
		737	reset_signals;
		738	}
		739
		740	sub fork_call(&@) {
		741	my ($cb, @args) = @_;
		742
		743	# we seemingly have to make a local copy of the whole thing,
		744	# otherwise perl prematurely frees the stuff :/
		745	# TODO: investigate and fix (likely this will be rather laborious)
		746
		747	my @res = Coro::Util::fork_eval {
		748	cf::post_fork;
		749	&$cb
		750	} @args;
		751
		752	wantarray ? @res : $res[-1]
		753	}
		754
		755	sub objinfo {
		756	(
		757	"counter value" => cf::object::object_count,
		758	"objects created" => cf::object::create_count,
		759	"objects destroyed" => cf::object::destroy_count,
		760	"freelist size" => cf::object::free_count,
		761	"allocated objects" => cf::object::objects_size,
		762	"active objects" => cf::object::actives_size,
		763	)
		764	}
		765
		766	=item $coin = coin_from_name $name
		767
		768	=cut
		769
		770	our %coin_alias = (
		771	"silver" => "silvercoin",
		772	"silvercoin" => "silvercoin",
		773	"silvercoins" => "silvercoin",
		774	"gold" => "goldcoin",
		775	"goldcoin" => "goldcoin",
		776	"goldcoins" => "goldcoin",
		777	"platinum" => "platinacoin",
		778	"platinumcoin" => "platinacoin",
		779	"platinumcoins" => "platinacoin",
		780	"platina" => "platinacoin",
		781	"platinacoin" => "platinacoin",
		782	"platinacoins" => "platinacoin",
		783	"royalty" => "royalty",
		784	"royalties" => "royalty",
		785	);
		786
		787	sub coin_from_name($) {
		788	$coin_alias{$_[0]}
		789	? cf::arch::find $coin_alias{$_[0]}
		790	: undef
		791	}
		792
		793	=item $value = cf::db_get $family => $key
		794
		795	Returns a single value from the environment database.
		796
		797	=item cf::db_put $family => $key => $value
		798
		799	Stores the given C<$value> in the family. It can currently store binary
		800	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		801
		802	=item $db = cf::db_table "name"
		803
		804	Create and/or open a new database table. The string must not be "db" and must be unique
		805	within each server.
		806
		807	=cut
		808
		809	sub db_table($) {
		810	cf::error "db_get called from main context"
		811	if $Coro::current == $Coro::main;
		812
		813	my ($name) = @_;
		814	my $db = BDB::db_create $DB_ENV;
		815
		816	eval {
		817	$db->set_flags (BDB::CHKSUM);
		818
		819	utf8::encode $name;
		820	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		821	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		822	cf::cleanup "db_open(db): $!" if $!;
		823	};
		824	cf::cleanup "db_open(db): $@" if $@;
		825
		826	$db
		827	}
		828
		829	our $DB;
		830
		831	sub db_init {
		832	$DB ||= db_table "db";
		833	}
		834
		835	sub db_get($$) {
		836	my $key = "$_[0]/$_[1]";
		837
		838	cf::error "db_get called from main context"
		839	if $Coro::current == $Coro::main;
		840
		841	BDB::db_get $DB, undef, $key, my $data;
		842
		843	$! ? ()
		844	: $data
		845	}
		846
		847	sub db_put($$$) {
		848	BDB::dbreq_pri 4;
		849	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		850	}
		851
		852	=item cf::cache $id => [$paths...], $processversion => $process
		853
		854	Generic caching function that returns the value of the resource $id,
		855	caching and regenerating as required.
		856
		857	This function can block.
		858
		859	=cut
		860
		861	sub cache {
		862	my ($id, $src, $processversion, $process) = @_;
		863
		864	my $meta =
		865	join "\x00",
		866	$processversion,
		867	map {
		868	aio_stat $_
		869	and Carp::croak "$_: $!";
		870
		871	($_, (stat _)[7,9])
		872	} @$src;
		873
		874	my $dbmeta = db_get cache => "$id/meta";
		875	if ($dbmeta ne $meta) {
		876	# changed, we may need to process
		877
		878	my @data;
		879	my $md5;
		880
		881	for (0 .. $#$src) {
		882	$data[$_] = load_file $src->[$_];
		883	}
		884
		885	# if processing is expensive, check
		886	# checksum first
		887	if (1) {
		888	$md5 =
		889	join "\x00",
		890	$processversion,
		891	map {
		892	cf::cede_to_tick;
		893	($src->[$_], Digest::MD5::md5_hex $data[$_])
		894	} 0.. $#$src;
		895
		896
		897	my $dbmd5 = db_get cache => "$id/md5";
		898	if ($dbmd5 eq $md5) {
		899	db_put cache => "$id/meta", $meta;
		900
		901	return db_get cache => "$id/data";
		902	}
		903	}
		904
		905	my $t1 = EV::time;
		906	my $data = $process->(\@data);
		907	my $t2 = EV::time;
		908
		909	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		910
		911	db_put cache => "$id/data", $data;
		912	db_put cache => "$id/md5" , $md5;
		913	db_put cache => "$id/meta", $meta;
		914
		915	return $data;
		916	}
		917
		918	db_get cache => "$id/data"
		919	}
		920
		921	=item cf::datalog type => key => value, ...
		922
		923	Log a datalog packet of the given type with the given key-value pairs.
		924
		925	=cut
		926
		927	sub datalog($@) {
		928	my ($type, %kv) = @_;
		929	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
119	}	930	}
120		931
121	=back	932	=back
122		933
123	=cut	934	=cut
124		935
125	#############################################################################	936	#############################################################################
126		937
127	=head2 EVENTS AND OBJECT ATTACHMENTS	938	=head2 ATTACHABLE OBJECTS
		939
		940	Many objects in deliantra are so-called attachable objects. That means you can
		941	attach callbacks/event handlers (a collection of which is called an "attachment")
		942	to it. All such attachable objects support the following methods.
		943
		944	In the following description, CLASS can be any of C<global>, C<object>
		945	C<player>, C<client> or C<map> (i.e. the attachable objects in
		946	Deliantra).
128		947
129	=over 4	948	=over 4
130		949
131	=item $object->attach ($attachment, key => $value...)
132
133	=item $object->detach ($attachment)
134
135	Attach/detach a pre-registered attachment to an object.
136
137	=item $player->attach ($attachment, key => $value...)
138
139	=item $player->detach ($attachment)
140
141	Attach/detach a pre-registered attachment to a player.
142
143	=item $map->attach ($attachment, key => $value...)	950	=item $attachable->attach ($attachment, key => $value...)
144		951
145	=item $map->detach ($attachment)	952	=item $attachable->detach ($attachment)
146		953
147	Attach/detach a pre-registered attachment to a map.	954	Attach/detach a pre-registered attachment to a specific object and give it
		955	the specified key/value pairs as arguments.
148		956
149	=item $bool = $object->attached ($name)	957	Example, attach a minesweeper attachment to the given object, making it a
		958	10x10 minesweeper game:
150		959
151	=item $bool = $player->attached ($name)	960	$obj->attach (minesweeper => width => 10, height => 10);
152		961
153	=item $bool = $map->attached ($name)	962	=item $bool = $attachable->attached ($name)
154		963
155	Checks wether the named attachment is currently attached to the object.	964	Checks wether the named attachment is currently attached to the object.
156		965
157	=item cf::attach_global ...	966	=item cf::CLASS->attach ...
158		967
159	Attach handlers for global events.	968	=item cf::CLASS->detach ...
160		969
161	This and all following C<attach_*>-functions expect any number of the	970	Define an anonymous attachment and attach it to all objects of the given
162	following handler/hook descriptions:	971	CLASS. See the next function for an explanation of its arguments.
		972
		973	You can attach to global events by using the C<cf::global> class.
		974
		975	Example, log all player logins:
		976
		977	cf::player->attach (
		978	on_login => sub {
		979	my ($pl) = @_;
		980	...
		981	},
		982	);
		983
		984	Example, attach to the jeweler skill:
		985
		986	cf::object->attach (
		987	type => cf::SKILL,
		988	subtype => cf::SK_JEWELER,
		989	on_use_skill => sub {
		990	my ($sk, $ob, $part, $dir, $msg) = @_;
		991	...
		992	},
		993	);
		994
		995	=item cf::CLASS::attachment $name, ...
		996
		997	Register an attachment by C<$name> through which attachable objects of the
		998	given CLASS can refer to this attachment.
		999
		1000	Some classes such as deliantra maps and objects can specify attachments
		1001	that are attached at load/instantiate time, thus the need for a name.
		1002
		1003	These calls expect any number of the following handler/hook descriptions:
163		1004
164	=over 4	1005	=over 4
165		1006
166	=item prio => $number	1007	=item prio => $number
167		1008
…		…
169	by another C<prio> setting). Lower priority handlers get executed	1010	by another C<prio> setting). Lower priority handlers get executed
170	earlier. The default priority is C<0>, and many built-in handlers are	1011	earlier. The default priority is C<0>, and many built-in handlers are
171	registered at priority C<-1000>, so lower priorities should not be used	1012	registered at priority C<-1000>, so lower priorities should not be used
172	unless you know what you are doing.	1013	unless you know what you are doing.
173		1014
		1015	=item type => $type
		1016
		1017	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		1018	given type of objects only (the additional parameter C<subtype> can be
		1019	used to further limit to the given subtype).
		1020
174	=item on_I<event> => \&cb	1021	=item on_I<event> => \&cb
175		1022
176	Call the given code reference whenever the named event happens (event is	1023	Call the given code reference whenever the named event happens (event is
177	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	1024	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
178	handlers are recognised generally depends on the type of object these	1025	handlers are recognised generally depends on the type of object these
…		…
187	package and register them. Only handlers for eevents supported by the	1034	package and register them. Only handlers for eevents supported by the
188	object/class are recognised.	1035	object/class are recognised.
189		1036
190	=back	1037	=back
191		1038
192	=item cf::attach_to_type $object_type, $subtype, ...	1039	Example, define an attachment called "sockpuppet" that calls the given
		1040	event handler when a monster attacks:
193		1041
194	Attach handlers for a specific object type (e.g. TRANSPORT) and	1042	cf::object::attachment sockpuppet =>
195	subtype. If C<$subtype> is zero or undef, matches all objects of the given	1043	on_skill_attack => sub {
196	type.	1044	my ($self, $victim) = @_;
197		1045	...
198	=item cf::attach_to_objects ...
199
200	Attach handlers to all objects. Do not use this except for debugging or
201	very rare events, as handlers are (obviously) called for I<all> objects in
202	the game.
203
204	=item cf::attach_to_players ...
205
206	Attach handlers to all players.
207
208	=item cf::attach_to_maps ...
209
210	Attach handlers to all maps.
211
212	=item cf:register_attachment $name, ...
213
214	Register an attachment by name through which objects can refer to this
215	attachment.
216
217	=item cf:register_player_attachment $name, ...
218
219	Register an attachment by name through which players can refer to this
220	attachment.
221
222	=item cf:register_map_attachment $name, ...
223
224	Register an attachment by name through which maps can refer to this
225	attachment.
226
227	=cut
228
229	# the following variables are defined in .xs and must not be re-created
230	our @CB_GLOBAL = (); # registry for all global events
231	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
232	our @CB_PLAYER = ();
233	our @CB_TYPE = (); # registry for type (cf-object class) based events
234	our @CB_MAP = ();
235
236	my %attachment;
237
238	sub _attach_cb($\%$$$) {
239	my ($registry, $undo, $event, $prio, $cb) = @_;
240
241	use sort 'stable';
242
243	$cb = [$prio, $cb];
244
245	@{$registry->[$event]} = sort
246	{ $a->[0] cmp $b->[0] }
247	@{$registry->[$event] || []}, $cb;
248
249	push @{$undo->{cb}}, [$event, $cb];
250	}
251
252	# attach handles attaching event callbacks
253	# the only thing the caller has to do is pass the correct
254	# registry (== where the callback attaches to).
255	sub _attach(\@$@) {
256	my ($registry, $klass, @arg) = @_;
257
258	my $prio = 0;
259
260	my %undo = (
261	registry => $registry,
262	cb => [],
263	);
264
265	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
266
267	while (@arg) {
268	my $type = shift @arg;
269
270	if ($type eq "prio") {
271	$prio = shift @arg;
272
273	} elsif ($type eq "package") {
274	my $pkg = shift @arg;
275
276	while (my ($name, $id) = each %cb_id) {
277	if (my $cb = $pkg->can ($name)) {
278	_attach_cb $registry, %undo, $id, $prio, $cb;
279	}
280	}	1046	}
281
282	} elsif (exists $cb_id{$type}) {
283	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
284
285	} elsif (ref $type) {
286	warn "attaching objects not supported, ignoring.\n";
287
288	} else {
289	shift @arg;
290	warn "attach argument '$type' not supported, ignoring.\n";
291	}
292	}
293
294	\%undo
295	}
296
297	sub _attach_attachment {
298	my ($obj, $name, %arg) = @_;
299
300	return if exists $obj->{_attachment}{$name};
301
302	my $res;
303
304	if (my $attach = $attachment{$name}) {
305	my $registry = $obj->registry;
306
307	for (@$attach) {
308	my ($klass, @attach) = @$_;
309	$res = _attach @$registry, $klass, @attach;
310	}
311
312	$obj->{$name} = \%arg;
313	} else {
314	warn "object uses attachment '$name' that is not available, postponing.\n";
315	}
316
317	$obj->{_attachment}{$name} = undef;
318
319	$res->{attachment} = $name;
320	$res
321	}
322
323	*cf::object::attach =
324	*cf::player::attach =
325	*cf::map::attach = sub {
326	my ($obj, $name, %arg) = @_;
327
328	_attach_attachment $obj, $name, %arg;
329	};
330
331	# all those should be optimised
332	*cf::object::detach =
333	*cf::player::detach =
334	*cf::map::detach = sub {
335	my ($obj, $name) = @_;
336
337	delete $obj->{_attachment}{$name};
338	reattach ($obj);
339	};
340
341	*cf::object::attached =
342	*cf::player::attached =
343	*cf::map::attached = sub {
344	my ($obj, $name) = @_;
345
346	exists $obj->{_attachment}{$name}
347	};
348
349	sub attach_global {
350	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
351	}
352
353	sub attach_to_type {
354	my $type = shift;
355	my $subtype = shift;
356
357	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
358	}
359
360	sub attach_to_objects {
361	_attach @CB_OBJECT, KLASS_OBJECT, @_
362	}
363
364	sub attach_to_players {
365	_attach @CB_PLAYER, KLASS_PLAYER, @_
366	}
367
368	sub attach_to_maps {
369	_attach @CB_MAP, KLASS_MAP, @_
370	}
371
372	sub register_attachment {
373	my $name = shift;
374
375	$attachment{$name} = [[KLASS_OBJECT, @_]];
376	}
377
378	sub register_player_attachment {
379	my $name = shift;
380
381	$attachment{$name} = [[KLASS_PLAYER, @_]];
382	}
383
384	sub register_map_attachment {
385	my $name = shift;
386
387	$attachment{$name} = [[KLASS_MAP, @_]];
388	}
389
390	our $override;
391	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
392
393	sub override {
394	$override = 1;
395	@invoke_results = ();
396	}
397
398	sub do_invoke {
399	my $event = shift;
400	my $callbacks = shift;
401
402	@invoke_results = ();
403
404	local $override;
405
406	for (@$callbacks) {
407	eval { &{$_->[1]} };
408
409	if ($@) {
410	warn "$@";
411	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
412	override;
413	}
414
415	return 1 if $override;
416	}
417
418	0	1047	}
419	}
420		1048
421	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1049	=item $attachable->valid
422
423	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
424
425	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
426
427	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
428
429	Generate a global/object/player/map-specific event with the given arguments.
430
431	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
432	removed in future versions), and there is no public API to access override
433	results (if you must, access C<@cf::invoke_results> directly).
434
435	=back
436
437	=cut
438
439	#############################################################################
440
441	=head2 METHODS VALID FOR ALL CORE OBJECTS
442
443	=over 4
444
445	=item $object->valid, $player->valid, $map->valid
446		1050
447	Just because you have a perl object does not mean that the corresponding	1051	Just because you have a perl object does not mean that the corresponding
448	C-level object still exists. If you try to access an object that has no	1052	C-level object still exists. If you try to access an object that has no
449	valid C counterpart anymore you get an exception at runtime. This method	1053	valid C counterpart anymore you get an exception at runtime. This method
450	can be used to test for existence of the C object part without causing an	1054	can be used to test for existence of the C object part without causing an
451	exception.	1055	exception.
452		1056
		1057	=cut
		1058
		1059	# the following variables are defined in .xs and must not be re-created
		1060	our @CB_GLOBAL = (); # registry for all global events
		1061	our @CB_ATTACHABLE = (); # registry for all attachables
		1062	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		1063	our @CB_PLAYER = ();
		1064	our @CB_CLIENT = ();
		1065	our @CB_TYPE = (); # registry for type (cf-object class) based events
		1066	our @CB_MAP = ();
		1067
		1068	my %attachment;
		1069
		1070	sub cf::attachable::thawer_merge {
		1071	# simply override everything except _meta
		1072	local $_[0]{_meta};
		1073	%{$_[0]} = %{$_[1]};
		1074	}
		1075
		1076	sub _attach_cb($$$$) {
		1077	my ($registry, $event, $prio, $cb) = @_;
		1078
		1079	use sort 'stable';
		1080
		1081	$cb = [$prio, $cb];
		1082
		1083	@{$registry->[$event]} = sort
		1084	{ $a->[0] cmp $b->[0] }
		1085	@{$registry->[$event] || []}, $cb;
		1086	}
		1087
		1088	# hack
		1089	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		1090
		1091	# attach handles attaching event callbacks
		1092	# the only thing the caller has to do is pass the correct
		1093	# registry (== where the callback attaches to).
		1094	sub _attach {
		1095	my ($registry, $klass, @arg) = @_;
		1096
		1097	my $object_type;
		1098	my $prio = 0;
		1099	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1100
		1101	#TODO: get rid of this hack
		1102	if ($attachable_klass{$klass}) {
		1103	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1104	}
		1105
		1106	while (@arg) {
		1107	my $type = shift @arg;
		1108
		1109	if ($type eq "prio") {
		1110	$prio = shift @arg;
		1111
		1112	} elsif ($type eq "type") {
		1113	$object_type = shift @arg;
		1114	$registry = $CB_TYPE[$object_type] ||= [];
		1115
		1116	} elsif ($type eq "subtype") {
		1117	defined $object_type or Carp::croak "subtype specified without type";
		1118	my $object_subtype = shift @arg;
		1119	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1120
		1121	} elsif ($type eq "package") {
		1122	my $pkg = shift @arg;
		1123
		1124	while (my ($name, $id) = each %cb_id) {
		1125	if (my $cb = $pkg->can ($name)) {
		1126	_attach_cb $registry, $id, $prio, $cb;
		1127	}
		1128	}
		1129
		1130	} elsif (exists $cb_id{$type}) {
		1131	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		1132
		1133	} elsif (ref $type) {
		1134	error "attaching objects not supported, ignoring.\n";
		1135
		1136	} else {
		1137	shift @arg;
		1138	error "attach argument '$type' not supported, ignoring.\n";
		1139	}
		1140	}
		1141	}
		1142
		1143	sub _object_attach {
		1144	my ($obj, $name, %arg) = @_;
		1145
		1146	return if exists $obj->{_attachment}{$name};
		1147
		1148	if (my $attach = $attachment{$name}) {
		1149	my $registry = $obj->registry;
		1150
		1151	for (@$attach) {
		1152	my ($klass, @attach) = @$_;
		1153	_attach $registry, $klass, @attach;
		1154	}
		1155
		1156	$obj->{$name} = \%arg;
		1157	} else {
		1158	info "object uses attachment '$name' which is not available, postponing.\n";
		1159	}
		1160
		1161	$obj->{_attachment}{$name} = undef;
		1162	}
		1163
		1164	sub cf::attachable::attach {
		1165	if (ref $_[0]) {
		1166	_object_attach @_;
		1167	} else {
		1168	_attach shift->_attach_registry, @_;
		1169	}
		1170	_recalc_want;
		1171	};
		1172
		1173	# all those should be optimised
		1174	sub cf::attachable::detach {
		1175	my ($obj, $name) = @_;
		1176
		1177	if (ref $obj) {
		1178	delete $obj->{_attachment}{$name};
		1179	reattach ($obj);
		1180	} else {
		1181	Carp::croak "cannot, currently, detach class attachments";
		1182	}
		1183	_recalc_want;
		1184	};
		1185
		1186	sub cf::attachable::attached {
		1187	my ($obj, $name) = @_;
		1188
		1189	exists $obj->{_attachment}{$name}
		1190	}
		1191
		1192	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1193	eval "#line " . __LINE__ . " 'cf.pm'
		1194	sub cf::\L$klass\E::_attach_registry {
		1195	(\\\@CB_$klass, KLASS_$klass)
		1196	}
		1197
		1198	sub cf::\L$klass\E::attachment {
		1199	my \$name = shift;
		1200
		1201	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1202	}
		1203	";
		1204	die if $@;
		1205	}
		1206
		1207	our $override;
		1208	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1209
		1210	sub override {
		1211	$override = 1;
		1212	@INVOKE_RESULTS = (@_);
		1213	}
		1214
		1215	sub do_invoke {
		1216	my $event = shift;
		1217	my $callbacks = shift;
		1218
		1219	@INVOKE_RESULTS = ();
		1220
		1221	local $override;
		1222
		1223	for (@$callbacks) {
		1224	eval { &{$_->[1]} };
		1225
		1226	if ($@) {
		1227	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1228	override;
		1229	}
		1230
		1231	return 1 if $override;
		1232	}
		1233
		1234	0
		1235	}
		1236
		1237	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1238
		1239	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1240
		1241	Generate an object-specific event with the given arguments.
		1242
		1243	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1244	removed in future versions), and there is no public API to access override
		1245	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1246
453	=back	1247	=back
454		1248
455	=cut	1249	=cut
456
457	*cf::object::valid =
458	*cf::player::valid =
459	*cf::map::valid = \&cf::_valid;
460		1250
461	#############################################################################	1251	#############################################################################
462	# object support	1252	# object support
463		1253
464	sub instantiate {	1254	sub _object_equal($$);
		1255	sub _object_equal($$) {
		1256	my ($a, $b) = @_;
		1257
		1258	return 0 unless (ref $a) eq (ref $b);
		1259
		1260	if ("HASH" eq ref $a) {
		1261	my @ka = keys %$a;
		1262	my @kb = keys %$b;
		1263
		1264	return 0 if @ka != @kb;
		1265
		1266	for (0 .. $#ka) {
		1267	return 0 unless $ka[$_] eq $kb[$_];
		1268	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1269	}
		1270
		1271	} elsif ("ARRAY" eq ref $a) {
		1272
		1273	return 0 if @$a != @$b;
		1274
		1275	for (0 .. $#$a) {
		1276	return 0 unless _object_equal $a->[$_], $b->[$_];
		1277	}
		1278
		1279	} elsif ($a ne $b) {
		1280	return 0;
		1281	}
		1282
		1283	1
		1284	}
		1285
		1286	our $SLOW_MERGES;#d#
		1287	sub _can_merge {
465	my ($obj, $data) = @_;	1288	my ($ob1, $ob2) = @_;
466		1289
467	$data = from_json $data;	1290	++$SLOW_MERGES;#d#
468		1291
469	for (@$data) {	1292	# we do the slow way here
470	my ($name, $args) = @$_;	1293	return _object_equal $ob1, $ob2
471
472	$obj->attach ($name, %{$args || {} });
473	}
474	}	1294	}
475		1295
476	# basically do the same as instantiate, without calling instantiate
477	sub reattach {	1296	sub reattach {
		1297	# basically do the same as instantiate, without calling instantiate
478	my ($obj) = @_;	1298	my ($obj) = @_;
		1299
		1300	# no longer needed after getting rid of delete_package?
		1301	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1302
479	my $registry = $obj->registry;	1303	my $registry = $obj->registry;
480		1304
481	@$registry = ();	1305	@$registry = ();
482		1306
483	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1307	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
484		1308
485	for my $name (keys %{ $obj->{_attachment} || {} }) {	1309	for my $name (keys %{ $obj->{_attachment} || {} }) {
486	if (my $attach = $attachment{$name}) {	1310	if (my $attach = $attachment{$name}) {
487	for (@$attach) {	1311	for (@$attach) {
488	my ($klass, @attach) = @$_;	1312	my ($klass, @attach) = @$_;
489	_attach @$registry, $klass, @attach;	1313	_attach $registry, $klass, @attach;
490	}	1314	}
491	} else {	1315	} else {
492	warn "object uses attachment '$name' that is not available, postponing.\n";	1316	info "object uses attachment '$name' that is not available, postponing.\n";
493	}
494	}
495	}
496
497	sub object_freezer_save {
498	my ($filename, $rdata, $objs) = @_;
499
500	if (length $$rdata) {
501	warn sprintf "saving %s (%d,%d)\n",
502	$filename, length $$rdata, scalar @$objs;
503
504	if (open my $fh, ">:raw", "$filename~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, $$rdata;
507	close $fh;
508
509	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
512	close $fh;
513	rename "$filename.pst~", "$filename.pst";
514	} else {
515	unlink "$filename.pst";
516	}	1317	}
517
518	rename "$filename~", $filename;
519	} else {
520	warn "FATAL: $filename~: $!\n";
521	}
522	} else {
523	unlink $filename;
524	unlink "$filename.pst";
525	}	1318	}
526	}	1319	}
527		1320
528	sub object_freezer_as_string {	1321	cf::attachable->attach (
529	my ($rdata, $objs) = @_;
530
531	use Data::Dumper;
532
533	$$rdata . Dumper $objs
534	}
535
536	sub object_thawer_load {
537	my ($filename) = @_;
538
539	local $/;
540
541	my $av;
542
543	#TODO: use sysread etc.
544	if (open my $data, "<:raw:perlio", $filename) {
545	$data = <$data>;
546	if (open my $pst, "<:raw:perlio", "$filename.pst") {
547	$av = eval { (Storable::thaw <$pst>)->{objs} };
548	}
549	return ($data, $av);
550	}
551
552	()
553	}
554
555	attach_to_objects
556	prio => -1000000,	1322	prio => -1000000,
		1323	on_instantiate => sub {
		1324	my ($obj, $data) = @_;
		1325
		1326	$data = decode_json $data;
		1327
		1328	for (@$data) {
		1329	my ($name, $args) = @$_;
		1330
		1331	$obj->attach ($name, %{$args || {} });
		1332	}
		1333	},
		1334	on_reattach => \&reattach,
557	on_clone => sub {	1335	on_clone => sub {
558	my ($src, $dst) = @_;	1336	my ($src, $dst) = @_;
559		1337
560	@{$dst->registry} = @{$src->registry};	1338	@{$dst->registry} = @{$src->registry};
561		1339
562	%$dst = %$src;	1340	%$dst = %$src;
563		1341
564	%{$dst->{_attachment}} = %{$src->{_attachment}}	1342	%{$dst->{_attachment}} = %{$src->{_attachment}}
565	if exists $src->{_attachment};	1343	if exists $src->{_attachment};
566	},	1344	},
567	;	1345	);
		1346
		1347	sub object_freezer_save {
		1348	my ($filename, $rdata, $objs) = @_;
		1349
		1350	sync_job {
		1351	if (length $$rdata) {
		1352	utf8::decode (my $decname = $filename);
		1353	trace sprintf "saving %s (%d,%d)\n",
		1354	$decname, length $$rdata, scalar @$objs
		1355	if $VERBOSE_IO;
		1356
		1357	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1358	aio_chmod $fh, SAVE_MODE;
		1359	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1360	if ($cf::USE_FSYNC) {
		1361	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1362	aio_fsync $fh;
		1363	}
		1364	aio_close $fh;
		1365
		1366	if (@$objs) {
		1367	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1368	aio_chmod $fh, SAVE_MODE;
		1369	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1370	aio_write $fh, 0, (length $data), $data, 0;
		1371	if ($cf::USE_FSYNC) {
		1372	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1373	aio_fsync $fh;
		1374	}
		1375	aio_close $fh;
		1376	aio_rename "$filename.pst~", "$filename.pst";
		1377	}
		1378	} else {
		1379	aio_unlink "$filename.pst";
		1380	}
		1381
		1382	aio_rename "$filename~", $filename;
		1383
		1384	$filename =~ s%/[^/]+$%%;
		1385	aio_pathsync $filename if $cf::USE_FSYNC;
		1386	} else {
		1387	error "unable to save objects: $filename~: $!\n";
		1388	}
		1389	} else {
		1390	aio_unlink $filename;
		1391	aio_unlink "$filename.pst";
		1392	}
		1393	};
		1394	}
		1395
		1396	sub object_freezer_as_string {
		1397	my ($rdata, $objs) = @_;
		1398
		1399	use Data::Dumper;
		1400
		1401	$$rdata . Dumper $objs
		1402	}
		1403
		1404	sub object_thawer_load {
		1405	my ($filename) = @_;
		1406
		1407	my ($data, $av);
		1408
		1409	(aio_load $filename, $data) >= 0
		1410	or return;
		1411
		1412	unless (aio_stat "$filename.pst") {
		1413	(aio_load "$filename.pst", $av) >= 0
		1414	or return;
		1415
		1416	my $st = eval { Coro::Storable::thaw $av };
		1417	$av = $st->{objs};
		1418	}
		1419
		1420	utf8::decode (my $decname = $filename);
		1421	trace sprintf "loading %s (%d,%d)\n",
		1422	$decname, length $data, scalar @{$av || []}
		1423	if $VERBOSE_IO;
		1424
		1425	($data, $av)
		1426	}
		1427
		1428	=head2 COMMAND CALLBACKS
		1429
		1430	=over 4
		1431
		1432	=cut
568		1433
569	#############################################################################	1434	#############################################################################
570	# old plug-in events	1435	# command handling &c
571		1436
572	sub inject_event {	1437	=item cf::register_command $name => \&callback($ob,$args)
573	my $extension = shift;
574	my $event_code = shift;
575		1438
576	my $cb = $hook[$event_code]{$extension}	1439	Register a callback for execution when the client sends the user command
577	or return;	1440	$name.
578		1441
579	&$cb	1442	=cut
580	}
581
582	sub inject_global_event {
583	my $event = shift;
584
585	my $cb = $hook[$event]
586	or return;
587
588	List::Util::max map &$_, values %$cb
589	}
590
591	sub inject_command {
592	my ($name, $obj, $params) = @_;
593
594	for my $cmd (@{ $command{$name} }) {
595	$cmd->[1]->($obj, $params);
596	}
597
598	-1
599	}
600		1443
601	sub register_command {	1444	sub register_command {
602	my ($name, $time, $cb) = @_;	1445	my ($name, $cb) = @_;
603		1446
604	my $caller = caller;	1447	my $caller = caller;
605	#warn "registering command '$name/$time' to '$caller'";	1448	#warn "registering command '$name/$time' to '$caller'";
606		1449
607	push @{ $command{$name} }, [$time, $cb, $caller];	1450	push @{ $COMMAND{$name} }, [$caller, $cb];
608	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
609	}	1451	}
610		1452
		1453	=item cf::register_extcmd $name => \&callback($pl,@args)
		1454
		1455	Register a callback for execution when the client sends an (synchronous)
		1456	extcmd packet. Ext commands will be processed in the order they are
		1457	received by the server, like other user commands. The first argument is
		1458	the logged-in player. Ext commands can only be processed after a player
		1459	has logged in successfully.
		1460
		1461	The values will be sent back to the client.
		1462
		1463	=item cf::register_async_extcmd $name => \&callback($pl,$reply->(...),@args)
		1464
		1465	Same as C<cf::register_extcmd>, but instead of returning values, the
		1466	callback needs to clal the C<$reply> function.
		1467
		1468	=item cf::register_exticmd $name => \&callback($ns,@args)
		1469
		1470	Register a callback for execution when the client sends an (asynchronous)
		1471	exticmd packet. Exti commands are processed by the server as soon as they
		1472	are received, i.e. out of order w.r.t. other commands. The first argument
		1473	is a client socket. Exti commands can be received anytime, even before
		1474	log-in.
		1475
		1476	The values will be sent back to the client.
		1477
		1478	=item cf::register_async_exticmd $name => \&callback($ns,$reply->(...),@args)
		1479
		1480	Same as C<cf::register_extcmd>, but instead of returning values, the
		1481	callback needs to clal the C<$reply> function.
		1482
		1483	=cut
		1484
611	sub register_extcmd {	1485	sub register_extcmd($$) {
612	my ($name, $cb) = @_;	1486	my ($name, $cb) = @_;
613		1487
614	my $caller = caller;	1488	$EXTCMD{$name} = $cb;
615	#warn "registering extcmd '$name' to '$caller'";
616
617	$extcmd{$name} = [$cb, $caller];
618	}	1489	}
619		1490
620	sub register {	1491	sub register_async_extcmd($$) {
621	my ($base, $pkg) = @_;	1492	my ($name, $cb) = @_;
622		1493
623	#TODO	1494	$EXTACMD{$name} = $cb;
624	}	1495	}
625		1496
626	sub load_extension {	1497	sub register_exticmd($$) {
627	my ($path) = @_;	1498	my ($name, $cb) = @_;
628		1499
629	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1500	$EXTICMD{$name} = $cb;
630	my $base = $1;
631	my $pkg = $1;
632	$pkg =~ s/[^[:word:]]/_/g;
633	$pkg = "ext::$pkg";
634
635	warn "loading '$path' into '$pkg'\n";
636
637	open my $fh, "<:utf8", $path
638	or die "$path: $!";
639
640	my $source =
641	"package $pkg; use strict; use utf8;\n"
642	. "#line 1 \"$path\"\n{\n"
643	. (do { local $/; <$fh> })
644	. "\n};\n1";
645
646	eval $source
647	or die $@ ? "$path: $@\n"
648	: "extension disabled.\n";
649
650	push @exts, $pkg;
651	$ext_pkg{$base} = $pkg;
652
653	# no strict 'refs';
654	# @{"$pkg\::ISA"} = ext::;
655
656	register $base, $pkg;
657	}	1501	}
658		1502
659	sub unload_extension {	1503	sub register_async_exticmd($$) {
660	my ($pkg) = @_;	1504	my ($name, $cb) = @_;
661		1505
662	warn "removing extension $pkg\n";	1506	$EXTIACMD{$name} = $cb;
		1507	}
663		1508
664	# remove hooks	1509	use File::Glob ();
665	#TODO
666	# for my $idx (0 .. $#PLUGIN_EVENT) {
667	# delete $hook[$idx]{$pkg};
668	# }
669		1510
670	# remove commands	1511	cf::player->attach (
671	for my $name (keys %command) {	1512	on_unknown_command => sub {
672	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1513	my ($pl, $name, $params) = @_;
673		1514
674	if (@cb) {	1515	my $cb = $COMMAND{$name}
675	$command{$name} = \@cb;	1516	or return;
676	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;	1517
677	} else {	1518	for my $cmd (@$cb) {
678	delete $command{$name};	1519	$cmd->[1]->($pl->ob, $params);
679	delete $COMMAND{"$name\000"};
680	}	1520	}
		1521
		1522	cf::override;
681	}	1523	},
682
683	# remove extcmds
684	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
685	delete $extcmd{$name};
686	}
687
688	if (my $cb = $pkg->can ("unload")) {
689	eval {
690	$cb->($pkg);
691	1
692	} or warn "$pkg unloaded, but with errors: $@";
693	}
694
695	Symbol::delete_package $pkg;
696	}
697
698	sub load_extensions {
699	my $LIBDIR = maps_directory "perl";
700
701	for my $ext (<$LIBDIR/*.ext>) {
702	next unless -r $ext;
703	eval {
704	load_extension $ext;
705	1
706	} or warn "$ext not loaded: $@";
707	}
708	}
709
710	#############################################################################
711	# extcmd framework, basically convert ext <msg>
712	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
713
714	attach_to_players
715	on_extcmd => sub {	1524	on_extcmd => sub {
716	my ($pl, $buf) = @_;	1525	my ($pl, $buf) = @_;
717		1526
718	my $msg = eval { from_json $buf };	1527	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
719		1528
720	if (ref $msg) {	1529	if (ref $msg) {
721	if (my $cb = $extcmd{$msg->{msgtype}}) {	1530	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
722	if (my %reply = $cb->[0]->($pl, $msg)) {	1531
723	$pl->ext_reply ($msg->{msgid}, %reply);	1532	if (my $cb = $EXTACMD{$type}) {
		1533	$cb->(
		1534	$pl,
		1535	sub {
		1536	$pl->ext_msg ("reply-$reply", @_)
		1537	if $reply;
		1538	},
		1539	@payload
		1540	);
		1541	} else {
		1542	my @reply;
		1543
		1544	if (my $cb = $EXTCMD{$type}) {
		1545	@reply = $cb->($pl, @payload);
		1546	}
		1547
		1548	$pl->ext_msg ("reply-$reply", @reply)
		1549	if $reply;
		1550	}
		1551
		1552	} else {
		1553	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1554	}
		1555
		1556	cf::override;
		1557	},
		1558	);
		1559
		1560	# "readahead" all extensions
		1561	sub cache_extensions {
		1562	my $grp = IO::AIO::aio_group;
		1563
		1564	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1565	for (grep /\.ext$/, @{$_[0]}) {
		1566	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1567	}
		1568	};
		1569
		1570	$grp
		1571	}
		1572
		1573	sub _ext_cfg_reg($$$$) {
		1574	my ($rvar, $varname, $cfgname, $default) = @_;
		1575
		1576	$cfgname = lc $varname
		1577	unless length $cfgname;
		1578
		1579	$EXT_CFG{$cfgname} = [$rvar, $default];
		1580
		1581	$$rvar = exists $CFG{$cfgname} ? $CFG{$cfgname} : $default;
		1582	}
		1583
		1584	sub load_extensions {
		1585	info "loading extensions...";
		1586
		1587	%EXT_CFG = ();
		1588
		1589	cf::sync_job {
		1590	my %todo;
		1591
		1592	for my $path (<$LIBDIR/*.ext>) {
		1593	next unless -r $path;
		1594
		1595	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1596	my $base = $1;
		1597	my $pkg = $1;
		1598	$pkg =~ s/[^[:word:]]/_/g;
		1599	$pkg = "ext::$pkg";
		1600
		1601	open my $fh, "<:utf8", $path
		1602	or die "$path: $!";
		1603
		1604	my $source = do { local $/; <$fh> };
		1605
		1606	my %ext = (
		1607	path => $path,
		1608	base => $base,
		1609	pkg => $pkg,
		1610	);
		1611
		1612	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1613	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1614
		1615	$ext{source} =
		1616	"package $pkg; use common::sense;\n"
		1617	. "#line 1 \"$path\"\n{\n"
		1618	. $source
		1619	. "\n};\n1";
		1620
		1621	$todo{$base} = \%ext;
		1622	}
		1623
		1624	my $pass = 0;
		1625	my %done;
		1626	while (%todo) {
		1627	my $progress;
		1628
		1629	++$pass;
		1630
		1631	ext:
		1632	while (my ($k, $v) = each %todo) {
		1633	for (split /,\s*/, $v->{meta}{depends}) {
		1634	next ext
		1635	unless exists $done{$_};
		1636	}
		1637
		1638	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1639
		1640	my $source = $v->{source};
		1641
		1642	# support "CONF varname :confname = default" pseudo-statements
		1643	$source =~ s{
		1644	^ CONF \s+ ([^\s:=]+) \s* (?:: \s* ([^\s:=]+) \s* )? = ([^\n#]+)
		1645	}{
		1646	"our \$$1; BEGIN { cf::_ext_cfg_reg \\\$$1, q\x00$1\x00, q\x00$2\x00, $3 }";
		1647	}gmxe;
		1648
		1649	my $active = eval $source;
		1650
		1651	if (length $@) {
		1652	error "$v->{path}: $@\n";
		1653
		1654	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1655	if exists $v->{meta}{mandatory};
		1656
		1657	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1658	delete $todo{$k};
		1659	} else {
		1660	$done{$k} = delete $todo{$k};
		1661	push @EXTS, $v->{pkg};
		1662	$progress = 1;
		1663
		1664	info "$v->{base}: extension inactive.\n"
		1665	unless $active;
724	}	1666	}
725	}	1667	}
726	} else {	1668
727	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1669	unless ($progress) {
		1670	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1671
		1672	while (my ($k, $v) = each %todo) {
		1673	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1674	if exists $v->{meta}{mandatory};
		1675	}
		1676
		1677	last;
728	}	1678	}
729		1679	}
730	cf::override;
731	},	1680	};
732	;	1681	}
733		1682
734	#############################################################################	1683	#############################################################################
735	# load/save/clean perl data associated with a map
736		1684
737	*cf::mapsupport::on_clean = sub {	1685	=back
		1686
		1687	=head2 CORE EXTENSIONS
		1688
		1689	Functions and methods that extend core deliantra objects.
		1690
		1691	=cut
		1692
		1693	package cf::player;
		1694
		1695	use Coro::AIO;
		1696
		1697	=head3 cf::player
		1698
		1699	=over 4
		1700
		1701	=item cf::player::num_playing
		1702
		1703	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1704
		1705	=cut
		1706
		1707	sub num_playing {
		1708	scalar grep
		1709	$_->ob->map
		1710	&& !$_->hidden
		1711	&& !$_->ob->flag (cf::FLAG_WIZ),
		1712	cf::player::list
		1713	}
		1714
		1715	=item cf::player::find $login
		1716
		1717	Returns the given player object, loading it if necessary (might block).
		1718
		1719	=cut
		1720
		1721	sub playerdir($) {
		1722	"$PLAYERDIR/"
		1723	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1724	}
		1725
		1726	sub path($) {
		1727	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1728
		1729	(playerdir $login) . "/playerdata"
		1730	}
		1731
		1732	sub find_active($) {
		1733	$cf::PLAYER{$_[0]}
		1734	and $cf::PLAYER{$_[0]}->active
		1735	and $cf::PLAYER{$_[0]}
		1736	}
		1737
		1738	sub exists($) {
738	my ($map) = @_;	1739	my ($login) = @_;
739		1740
740	my $path = $map->tmpname;	1741	$cf::PLAYER{$login}
741	defined $path or return;	1742	or !aio_stat path $login
742
743	unlink "$path.pst";
744	};
745
746	attach_to_maps prio => -10000, package => cf::mapsupport::;
747
748	#############################################################################
749	# load/save perl data associated with player->ob objects
750
751	sub all_objects(@) {
752	@_, map all_objects ($_->inv), @_
753	}	1743	}
754		1744
755	# TODO: compatibility cruft, remove when no longer needed	1745	sub find($) {
756	attach_to_players	1746	return $cf::PLAYER{$_[0]} || do {
		1747	my $login = $_[0];
		1748
		1749	my $guard = cf::lock_acquire "user_find:$login";
		1750
		1751	$cf::PLAYER{$_[0]} || do {
		1752	# rename old playerfiles to new ones
		1753	#TODO: remove when no longer required
		1754	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1755	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1756	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1757	aio_unlink +(playerdir $login) . "/$login.pl";
		1758
		1759	my $f = new_from_file cf::object::thawer path $login
		1760	or return;
		1761
		1762	my $pl = cf::player::load_pl $f
		1763	or return;
		1764
		1765	local $cf::PLAYER_LOADING{$login} = $pl;
		1766	$f->resolve_delayed_derefs;
		1767	$cf::PLAYER{$login} = $pl
		1768	}
		1769	}
		1770	}
		1771
		1772	cf::player->attach (
757	on_load => sub {	1773	on_load => sub {
758	my ($pl, $path) = @_;	1774	my ($pl, $path) = @_;
759		1775
760	for my $o (all_objects $pl->ob) {	1776	# restore slots saved in save, below
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1777	my $slots = delete $pl->{_slots};
762	$o->set_ob_key_value ("_perl_data");
763		1778
764	%$o = %{ Storable::thaw pack "H*", $value };	1779	$pl->ob->current_weapon ($slots->[0]);
		1780	$pl->combat_ob ($slots->[1]);
		1781	$pl->ranged_ob ($slots->[2]);
		1782	},
		1783	);
		1784
		1785	sub save($) {
		1786	my ($pl) = @_;
		1787
		1788	return if $pl->{deny_save};
		1789
		1790	my $path = path $pl;
		1791	my $guard = cf::lock_acquire "user_save:$path";
		1792
		1793	return if $pl->{deny_save};
		1794
		1795	aio_mkdir playerdir $pl, 0770;
		1796	$pl->{last_save} = $cf::RUNTIME;
		1797
		1798	cf::get_slot 0.01;
		1799
		1800	# save slots, to be restored later
		1801	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1802
		1803	$pl->save_pl ($path);
		1804	cf::cede_to_tick;
		1805	}
		1806
		1807	sub new($) {
		1808	my ($login) = @_;
		1809
		1810	my $self = create;
		1811
		1812	$self->ob->name ($login);
		1813	$self->{deny_save} = 1;
		1814
		1815	$cf::PLAYER{$login} = $self;
		1816
		1817	$self
		1818	}
		1819
		1820	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1821
		1822	=cut
		1823
		1824	sub send_msg {
		1825	my $ns = shift->ns
		1826	or return;
		1827	$ns->send_msg (@_);
		1828	}
		1829
		1830	=item $pl->quit_character
		1831
		1832	Nukes the player without looking back. If logged in, the connection will
		1833	be destroyed. May block for a long time.
		1834
		1835	=cut
		1836
		1837	sub quit_character {
		1838	my ($pl) = @_;
		1839
		1840	my $name = $pl->ob->name;
		1841
		1842	$pl->{deny_save} = 1;
		1843	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1844
		1845	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1846	$pl->deactivate;
		1847
		1848	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1849	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1850	ext::highscore::check ($pl->ob);
		1851
		1852	$pl->ns->destroy if $pl->ns;
		1853
		1854	my $path = playerdir $pl;
		1855	my $temp = "$path~$cf::RUNTIME~deleting~";
		1856	aio_rename $path, $temp;
		1857	delete $cf::PLAYER{$pl->ob->name};
		1858	$pl->destroy;
		1859
		1860	my $prefix = qr<^~\Q$name\E/>;
		1861
		1862	# nuke player maps
		1863	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1864
		1865	IO::AIO::aio_rmtree $temp;
		1866	}
		1867
		1868	=item $pl->kick
		1869
		1870	Kicks a player out of the game. This destroys the connection.
		1871
		1872	=cut
		1873
		1874	sub kick {
		1875	my ($pl, $kicker) = @_;
		1876
		1877	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1878	$pl->killer ("kicked");
		1879	$pl->ns->destroy;
		1880	}
		1881
		1882	=item cf::player::list_logins
		1883
		1884	Returns am arrayref of all valid playernames in the system, can take a
		1885	while and may block, so not sync_job-capable, ever.
		1886
		1887	=cut
		1888
		1889	sub list_logins {
		1890	my $dirs = aio_readdir $PLAYERDIR
		1891	or return [];
		1892
		1893	my @logins;
		1894
		1895	for my $login (@$dirs) {
		1896	my $path = path $login;
		1897
		1898	# a .pst is a dead give-away for a valid player
		1899	# if no pst file found, open and chekc for blocked users
		1900	if (aio_stat "$path.pst") {
		1901	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1902	aio_read $fh, 0, 512, my $buf, 0 or next;
		1903	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1904	}
		1905
		1906	utf8::decode $login;
		1907	push @logins, $login;
		1908	}
		1909
		1910	\@logins
		1911	}
		1912
		1913	=item $player->maps
		1914
		1915	=item cf::player::maps $login
		1916
		1917	Returns an arrayref of map paths that are private for this
		1918	player. May block.
		1919
		1920	=cut
		1921
		1922	sub maps($) {
		1923	my ($pl) = @_;
		1924
		1925	$pl = ref $pl ? $pl->ob->name : $pl;
		1926
		1927	my $files = aio_readdir playerdir $pl
		1928	or return;
		1929
		1930	my @paths;
		1931
		1932	for (@$files) {
		1933	utf8::decode $_;
		1934	next if /\.(?:pl|pst)$/;
		1935	next unless /^$PATH_SEP/o;
		1936
		1937	push @paths, cf::map::normalise "~$pl/$_";
		1938	}
		1939
		1940	\@paths
		1941	}
		1942
		1943	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1944
		1945	Expand deliantra pod fragments into protocol xml.
		1946
		1947	=item $player->ext_msg ($type, @msg)
		1948
		1949	Sends an ext event to the client.
		1950
		1951	=cut
		1952
		1953	sub ext_msg($$@) {
		1954	my ($self, $type, @msg) = @_;
		1955
		1956	$self->ns->ext_msg ($type, @msg);
		1957	}
		1958
		1959	=head3 cf::region
		1960
		1961	=over 4
		1962
		1963	=cut
		1964
		1965	package cf::region;
		1966
		1967	=item cf::region::find_by_path $path
		1968
		1969	Tries to decuce the likely region for a map knowing only its path.
		1970
		1971	=cut
		1972
		1973	sub find_by_path($) {
		1974	my ($path) = @_;
		1975
		1976	$path =~ s/^~[^\/]*//; # skip ~login
		1977
		1978	my ($match, $specificity);
		1979
		1980	for my $region (list) {
		1981	if ($region->{match} && $path =~ $region->{match}) {
		1982	($match, $specificity) = ($region, $region->specificity)
		1983	if $region->specificity > $specificity;
		1984	}
		1985	}
		1986
		1987	$match
		1988	}
		1989
		1990	=back
		1991
		1992	=head3 cf::map
		1993
		1994	=over 4
		1995
		1996	=cut
		1997
		1998	package cf::map;
		1999
		2000	use Fcntl;
		2001	use Coro::AIO;
		2002
		2003	use overload
		2004	'""' => \&as_string,
		2005	fallback => 1;
		2006
		2007	our $MAX_RESET = 3600;
		2008	our $DEFAULT_RESET = 3000;
		2009
		2010	sub generate_random_map {
		2011	my ($self, $rmp) = @_;
		2012
		2013	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		2014
		2015	$self->_create_random_map ($rmp);
		2016	}
		2017
		2018	=item cf::map->register ($regex, $prio)
		2019
		2020	Register a handler for the map path matching the given regex at the
		2021	givne priority (higher is better, built-in handlers have priority 0, the
		2022	default).
		2023
		2024	=cut
		2025
		2026	sub register {
		2027	my (undef, $regex, $prio) = @_;
		2028	my $pkg = caller;
		2029
		2030	push @{"$pkg\::ISA"}, __PACKAGE__;
		2031
		2032	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		2033	}
		2034
		2035	# also paths starting with '/'
		2036	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		2037
		2038	sub thawer_merge {
		2039	my ($self, $merge) = @_;
		2040
		2041	# we have to keep some variables in memory intact
		2042	local $self->{path};
		2043	local $self->{load_path};
		2044
		2045	$self->SUPER::thawer_merge ($merge);
		2046	}
		2047
		2048	sub normalise {
		2049	my ($path, $base) = @_;
		2050
		2051	$path = "$path"; # make sure it's a string
		2052
		2053	$path =~ s/\.map$//;
		2054
		2055	# map plan:
		2056	#
		2057	# /! non-realised random map exit (special hack!)
		2058	# {... are special paths that are not being touched
		2059	# ?xxx/... are special absolute paths
		2060	# ?random/... random maps
		2061	# /... normal maps
		2062	# ~user/... per-player map of a specific user
		2063
		2064	$path =~ s/$PATH_SEP/\//go;
		2065
		2066	# treat it as relative path if it starts with
		2067	# something that looks reasonable
		2068	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		2069	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		2070
		2071	$base =~ s{[^/]+/?$}{};
		2072	$path = "$base/$path";
		2073	}
		2074
		2075	for ($path) {
		2076	redo if s{/\.?/}{/};
		2077	redo if s{/[^/]+/\.\./}{/};
		2078	}
		2079
		2080	$path
		2081	}
		2082
		2083	sub new_from_path {
		2084	my (undef, $path, $base) = @_;
		2085
		2086	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2087
		2088	$path = normalise $path, $base;
		2089
		2090	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2091	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2092	my $self = bless cf::map::new, $pkg;
		2093	$self->{path} = $path; $self->path ($path);
		2094	$self->init; # pass $1 etc.
		2095	return $self;
		2096	}
		2097	}
		2098
		2099	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2100	()
		2101	}
		2102
		2103	# may re-bless or do other evil things
		2104	sub init {
		2105	my ($self) = @_;
		2106
		2107	$self
		2108	}
		2109
		2110	sub as_string {
		2111	my ($self) = @_;
		2112
		2113	"$self->{path}"
		2114	}
		2115
		2116	# the displayed name, this is a one way mapping
		2117	sub visible_name {
		2118	&as_string
		2119	}
		2120
		2121	# the original (read-only) location
		2122	sub load_path {
		2123	my ($self) = @_;
		2124
		2125	"$MAPDIR/$self->{path}.map"
		2126	}
		2127
		2128	# the temporary/swap location
		2129	sub save_path {
		2130	my ($self) = @_;
		2131
		2132	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2133	"$TMPDIR/$path.map"
		2134	}
		2135
		2136	# the unique path, undef == no special unique path
		2137	sub uniq_path {
		2138	my ($self) = @_;
		2139
		2140	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2141	"$UNIQUEDIR/$path"
		2142	}
		2143
		2144	sub decay_objects {
		2145	my ($self) = @_;
		2146
		2147	return if $self->{deny_reset};
		2148
		2149	$self->do_decay_objects;
		2150	}
		2151
		2152	sub unlink_save {
		2153	my ($self) = @_;
		2154
		2155	utf8::encode (my $save = $self->save_path);
		2156	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2157	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2158	}
		2159
		2160	sub load_header_from($) {
		2161	my ($self, $path) = @_;
		2162
		2163	utf8::encode $path;
		2164	my $f = new_from_file cf::object::thawer $path
		2165	or return;
		2166
		2167	$self->_load_header ($f)
		2168	or return;
		2169
		2170	local $MAP_LOADING{$self->{path}} = $self;
		2171	$f->resolve_delayed_derefs;
		2172
		2173	$self->{load_path} = $path;
		2174
		2175	1
		2176	}
		2177
		2178	# used to laod the header of an original map
		2179	sub load_header_orig {
		2180	my ($self) = @_;
		2181
		2182	$self->load_header_from ($self->load_path)
		2183	}
		2184
		2185	# used to laod the header of an instantiated map
		2186	sub load_header_temp {
		2187	my ($self) = @_;
		2188
		2189	$self->load_header_from ($self->save_path)
		2190	}
		2191
		2192	# called after loading the header from an instantiated map
		2193	sub prepare_temp {
		2194	my ($self) = @_;
		2195
		2196	$self->last_access ((delete $self->{last_access})
		2197	|| $cf::RUNTIME); #d#
		2198	# safety
		2199	$self->{instantiate_time} = $cf::RUNTIME
		2200	if $self->{instantiate_time} > $cf::RUNTIME;
		2201	}
		2202
		2203	# called after loading the header from an original map
		2204	sub prepare_orig {
		2205	my ($self) = @_;
		2206
		2207	$self->{load_original} = 1;
		2208	$self->{instantiate_time} = $cf::RUNTIME;
		2209	$self->last_access ($cf::RUNTIME);
		2210	$self->instantiate;
		2211	}
		2212
		2213	sub load_header {
		2214	my ($self) = @_;
		2215
		2216	if ($self->load_header_temp) {
		2217	$self->prepare_temp;
		2218	} else {
		2219	$self->load_header_orig
		2220	or return;
		2221	$self->prepare_orig;
		2222	}
		2223
		2224	$self->{deny_reset} = 1
		2225	if $self->no_reset;
		2226
		2227	$self->default_region (cf::region::find_by_path $self->{path})
		2228	unless $self->default_region;
		2229
		2230	1
		2231	}
		2232
		2233	sub find;
		2234	sub find {
		2235	my ($path, $origin) = @_;
		2236
		2237	cf::cede_to_tick;
		2238
		2239	$path = normalise $path, $origin;
		2240
		2241	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2242	my $guard2 = cf::lock_acquire "map_find:$path";
		2243
		2244	$cf::MAP{$path} || do {
		2245	my $map = new_from_path cf::map $path
		2246	or return;
		2247
		2248	$map->{last_save} = $cf::RUNTIME;
		2249
		2250	$map->load_header
		2251	or return;
		2252
		2253	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2254	# doing this can freeze the server in a sync job, obviously
		2255	#$cf::WAIT_FOR_TICK->wait;
		2256	undef $guard2;
		2257	undef $guard1;
		2258	$map->reset;
		2259	return find $path;
		2260	}
		2261
		2262	$cf::MAP{$path} = $map
		2263	}
		2264	}
		2265
		2266	sub pre_load { }
		2267	#sub post_load { } # XS
		2268
		2269	sub load {
		2270	my ($self) = @_;
		2271
		2272	local $self->{deny_reset} = 1; # loading can take a long time
		2273
		2274	my $path = $self->{path};
		2275
		2276	{
		2277	my $guard = cf::lock_acquire "map_data:$path";
		2278
		2279	return unless $self->valid;
		2280	return unless $self->state == cf::MAP_SWAPPED;
		2281
		2282	$self->alloc;
		2283
		2284	$self->pre_load;
		2285	cf::cede_to_tick;
		2286
		2287	if (exists $self->{load_path}) {
		2288	my $f = new_from_file cf::object::thawer $self->{load_path};
		2289	$f->skip_block;
		2290	$self->_load_objects ($f)
		2291	or return;
		2292
		2293	$self->post_load_original
		2294	if delete $self->{load_original};
		2295
		2296	if (my $uniq = $self->uniq_path) {
		2297	utf8::encode $uniq;
		2298	unless (aio_stat $uniq) {
		2299	if (my $f = new_from_file cf::object::thawer $uniq) {
		2300	$self->clear_unique_items;
		2301	$self->_load_objects ($f);
		2302	$f->resolve_delayed_derefs;
		2303	}
		2304	}
765	}	2305	}
		2306
		2307	$f->resolve_delayed_derefs;
		2308	} else {
		2309	$self->post_load_original
		2310	if delete $self->{load_original};
766	}	2311	}
		2312
		2313	$self->state (cf::MAP_INACTIVE);
		2314
		2315	cf::cede_to_tick;
		2316	# now do the right thing for maps
		2317	$self->link_multipart_objects;
		2318	$self->difficulty ($self->estimate_difficulty)
		2319	unless $self->difficulty;
		2320	cf::cede_to_tick;
		2321
		2322	unless ($self->{deny_activate}) {
		2323	$self->decay_objects;
		2324	$self->fix_auto_apply;
		2325	$self->update_buttons;
		2326	cf::cede_to_tick;
		2327	#$self->activate; # no longer activate maps automatically
		2328	}
		2329
		2330	$self->{last_save} = $cf::RUNTIME;
		2331	$self->last_access ($cf::RUNTIME);
767	},	2332	}
768	;
769		2333
770	#############################################################################	2334	$self->post_load;
771		2335
772	=head2 CORE EXTENSIONS	2336	1
		2337	}
773		2338
774	Functions and methods that extend core crossfire objects.	2339	# customize the map for a given player, i.e.
		2340	# return the _real_ map. used by e.g. per-player
		2341	# maps to change the path to ~playername/mappath
		2342	sub customise_for {
		2343	my ($self, $ob) = @_;
		2344
		2345	return find "~" . $ob->name . "/" . $self->{path}
		2346	if $self->per_player;
		2347
		2348	# return find "?party/" . $ob->name . "/" . $self->{path}
		2349	# if $self->per_party;
		2350
		2351	$self
		2352	}
		2353
		2354	sub find_sync {
		2355	my ($path, $origin) = @_;
		2356
		2357	# it's a bug to call this from the main context
		2358	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2359	if $Coro::current == $Coro::main;
		2360
		2361	find $path, $origin
		2362	}
		2363
		2364	sub do_load_sync {
		2365	my ($map) = @_;
		2366
		2367	# it's a bug to call this from the main context
		2368	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2369	if $Coro::current == $Coro::main;
		2370
		2371	$map->load;
		2372	}
		2373
		2374	our %MAP_PREFETCH;
		2375	our $MAP_PREFETCHER = undef;
		2376
		2377	sub find_async {
		2378	my ($path, $origin, $load) = @_;
		2379
		2380	$path = normalise $path, $origin;
		2381
		2382	if (my $map = $cf::MAP{$path}) {
		2383	return $map if !$load || $map->linkable;
		2384	}
		2385
		2386	$MAP_PREFETCH{$path} |= $load;
		2387
		2388	$MAP_PREFETCHER ||= cf::async {
		2389	$Coro::current->{desc} = "map prefetcher";
		2390
		2391	while (%MAP_PREFETCH) {
		2392	while (my ($k, $v) = each %MAP_PREFETCH) {
		2393	if (my $map = find $k) {
		2394	$map->load if $v;
		2395	}
		2396
		2397	delete $MAP_PREFETCH{$k};
		2398	}
		2399	}
		2400	undef $MAP_PREFETCHER;
		2401	};
		2402	$MAP_PREFETCHER->prio (6);
		2403
		2404	()
		2405	}
		2406
		2407	# common code, used by both ->save and ->swapout
		2408	sub _save {
		2409	my ($self) = @_;
		2410
		2411	$self->{last_save} = $cf::RUNTIME;
		2412
		2413	return unless $self->dirty;
		2414
		2415	my $save = $self->save_path; utf8::encode $save;
		2416	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2417
		2418	$self->{load_path} = $save;
		2419
		2420	return if $self->{deny_save};
		2421
		2422	local $self->{last_access} = $self->last_access;#d#
		2423
		2424	cf::async {
		2425	$Coro::current->{desc} = "map player save";
		2426	$_->contr->save for $self->players;
		2427	};
		2428
		2429	cf::get_slot 0.02;
		2430
		2431	if ($uniq) {
		2432	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2433	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2434	} else {
		2435	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2436	}
		2437	}
		2438
		2439	sub save {
		2440	my ($self) = @_;
		2441
		2442	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2443
		2444	$self->_save;
		2445	}
		2446
		2447	sub swap_out {
		2448	my ($self) = @_;
		2449
		2450	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2451
		2452	return if !$self->linkable;
		2453	return if $self->{deny_save};
		2454	return if $self->players;
		2455
		2456	# first deactivate the map and "unlink" it from the core
		2457	$self->deactivate;
		2458	$_->clear_links_to ($self) for values %cf::MAP;
		2459	$self->state (cf::MAP_SWAPPED);
		2460
		2461	# then atomically save
		2462	$self->_save;
		2463
		2464	# then free the map
		2465	$self->clear;
		2466	}
		2467
		2468	sub reset_at {
		2469	my ($self) = @_;
		2470
		2471	# TODO: safety, remove and allow resettable per-player maps
		2472	return 1e99 if $self->{deny_reset};
		2473
		2474	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2475	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2476
		2477	$time + $to
		2478	}
		2479
		2480	sub should_reset {
		2481	my ($self) = @_;
		2482
		2483	$self->reset_at <= $cf::RUNTIME
		2484	}
		2485
		2486	sub reset {
		2487	my ($self) = @_;
		2488
		2489	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2490
		2491	return if $self->players;
		2492
		2493	cf::trace "resetting map ", $self->path, "\n";
		2494
		2495	$self->state (cf::MAP_SWAPPED);
		2496
		2497	# need to save uniques path
		2498	unless ($self->{deny_save}) {
		2499	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2500
		2501	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2502	if $uniq;
		2503	}
		2504
		2505	delete $cf::MAP{$self->path};
		2506
		2507	$self->deactivate;
		2508	$_->clear_links_to ($self) for values %cf::MAP;
		2509	$self->clear;
		2510
		2511	$self->unlink_save;
		2512	$self->destroy;
		2513	}
		2514
		2515	my $nuke_counter = "aaaa";
		2516
		2517	sub nuke {
		2518	my ($self) = @_;
		2519
		2520	{
		2521	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2522
		2523	delete $cf::MAP{$self->path};
		2524
		2525	$self->unlink_save;
		2526
		2527	bless $self, "cf::map::wrap";
		2528	delete $self->{deny_reset};
		2529	$self->{deny_save} = 1;
		2530	$self->reset_timeout (1);
		2531	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2532
		2533	$cf::MAP{$self->path} = $self;
		2534	}
		2535
		2536	$self->reset; # polite request, might not happen
		2537	}
		2538
		2539	=item $maps = cf::map::tmp_maps
		2540
		2541	Returns an arrayref with all map paths of currently instantiated and saved
		2542	maps. May block.
		2543
		2544	=cut
		2545
		2546	sub tmp_maps() {
		2547	[
		2548	map {
		2549	utf8::decode $_;
		2550	/\.map$/
		2551	? normalise $_
		2552	: ()
		2553	} @{ aio_readdir $TMPDIR or [] }
		2554	]
		2555	}
		2556
		2557	=item $maps = cf::map::random_maps
		2558
		2559	Returns an arrayref with all map paths of currently instantiated and saved
		2560	random maps. May block.
		2561
		2562	=cut
		2563
		2564	sub random_maps() {
		2565	[
		2566	map {
		2567	utf8::decode $_;
		2568	/\.map$/
		2569	? normalise "?random/$_"
		2570	: ()
		2571	} @{ aio_readdir $RANDOMDIR or [] }
		2572	]
		2573	}
		2574
		2575	=item cf::map::unique_maps
		2576
		2577	Returns an arrayref of paths of all shared maps that have
		2578	instantiated unique items. May block.
		2579
		2580	=cut
		2581
		2582	sub unique_maps() {
		2583	[
		2584	map {
		2585	utf8::decode $_;
		2586	s/\.map$//; # TODO future compatibility hack
		2587	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2588	? ()
		2589	: normalise $_
		2590	} @{ aio_readdir $UNIQUEDIR or [] }
		2591	]
		2592	}
		2593
		2594	=item cf::map::static_maps
		2595
		2596	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2597	file in the shared directory excluding F</styles> and F</editor>). May
		2598	block.
		2599
		2600	=cut
		2601
		2602	sub static_maps() {
		2603	my @dirs = "";
		2604	my @maps;
		2605
		2606	while (@dirs) {
		2607	my $dir = shift @dirs;
		2608
		2609	next if $dir eq "/styles" || $dir eq "/editor";
		2610
		2611	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2612	or return;
		2613
		2614	for (@$files) {
		2615	s/\.map$// or next;
		2616	utf8::decode $_;
		2617	push @maps, "$dir/$_";
		2618	}
		2619
		2620	push @dirs, map "$dir/$_", @$dirs;
		2621	}
		2622
		2623	\@maps
		2624	}
		2625
		2626	=back
		2627
		2628	=head3 cf::object
		2629
		2630	=cut
		2631
		2632	package cf::object;
775		2633
776	=over 4	2634	=over 4
777		2635
778	=item cf::player::exists $login	2636	=item $ob->inv_recursive
779		2637
780	Returns true when the given account exists.	2638	Returns the inventory of the object I<and> their inventories, recursively,
		2639	but I<not> the object itself.
781		2640
782	=cut	2641	=cut
783		2642
784	sub cf::player::exists($) {	2643	sub inv_recursive_;
785	cf::player::find $_[0]	2644	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2645	map { $_, inv_recursive_ $_->inv } @_
787	}	2646	}
		2647
		2648	sub inv_recursive {
		2649	inv_recursive_ inv $_[0]
		2650	}
		2651
		2652	=item $ref = $ob->ref
		2653
		2654	Creates and returns a persistent reference to an object that can be stored as a string.
		2655
		2656	=item $ob = cf::object::deref ($refstring)
		2657
		2658	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2659	even if the object actually exists. May block.
		2660
		2661	=cut
		2662
		2663	sub deref {
		2664	my ($ref) = @_;
		2665
		2666	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2667	my ($uuid, $name) = ($1, $2);
		2668	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2669	or return;
		2670	$pl->ob->uuid eq $uuid
		2671	or return;
		2672
		2673	$pl->ob
		2674	} else {
		2675	warn "$ref: cannot resolve object reference\n";
		2676	undef
		2677	}
		2678	}
		2679
		2680	package cf;
		2681
		2682	=back
		2683
		2684	=head3 cf::object::player
		2685
		2686	=over 4
788		2687
789	=item $player_object->reply ($npc, $msg[, $flags])	2688	=item $player_object->reply ($npc, $msg[, $flags])
790		2689
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2690	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
792	can be C<undef>. Does the right thing when the player is currently in a	2691	can be C<undef>. Does the right thing when the player is currently in a
793	dialogue with the given NPC character.	2692	dialogue with the given NPC character.
794		2693
795	=cut	2694	=cut
796		2695
		2696	our $SAY_CHANNEL = {
		2697	id => "say",
		2698	title => "Map",
		2699	reply => "say ",
		2700	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2701	};
		2702
		2703	our $CHAT_CHANNEL = {
		2704	id => "chat",
		2705	title => "Chat",
		2706	reply => "chat ",
		2707	tooltip => "Player chat and shouts, global to the server.",
		2708	};
		2709
797	# rough implementation of a future "reply" method that works	2710	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	2711	# with dialog boxes.
		2712	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	2713	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	2714	my ($self, $npc, $msg, $flags) = @_;
801		2715
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2716	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		2717
804	if ($self->{record_replies}) {	2718	if ($self->{record_replies}) {
805	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2719	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2720
806	} else {	2721	} else {
		2722	my $pl = $self->contr;
		2723
		2724	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2725	my $dialog = $pl->{npc_dialog};
		2726	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2727
		2728	} else {
807	$msg = $npc->name . " says: $msg" if $npc;	2729	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	2730	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2731	}
809	}	2732	}
810	}	2733	}
811		2734
812	=item $player->ext_reply ($msgid, $msgtype, %msg)	2735	=item $object->send_msg ($channel, $msg, $color, [extra...])
813		2736
814	Sends an ext reply to the player.
815
816	=cut	2737	=cut
817		2738
818	sub cf::player::ext_reply($$$%) {	2739	sub cf::object::send_msg {
819	my ($self, $id, %msg) = @_;	2740	my $pl = shift->contr
820		2741	or return;
821	$msg{msgid} = $id;	2742	$pl->send_msg (@_);
822
823	$self->send ("ext " . to_json \%msg);
824	}	2743	}
825		2744
826	=item $player_object->may ("access")	2745	=item $player_object->may ("access")
827		2746
828	Returns wether the given player is authorized to access resource "access"	2747	Returns wether the given player is authorized to access resource "access"
…		…
837	(ref $cf::CFG{"may_$access"}	2756	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2757	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	2758	: $cf::CFG{"may_$access"})
840	}	2759	}
841		2760
842	=cut	2761	=item $player_object->enter_link
843		2762
844	#############################################################################	2763	Freezes the player and moves him/her to a special map (C<{link}>).
		2764
		2765	The player should be reasonably safe there for short amounts of time (e.g.
		2766	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2767	though, as the player cannot control the character while it is on the link
		2768	map.
		2769
		2770	Will never block.
		2771
		2772	=item $player_object->leave_link ($map, $x, $y)
		2773
		2774	Moves the player out of the special C<{link}> map onto the specified
		2775	map. If the map is not valid (or omitted), the player will be moved back
		2776	to the location he/she was before the call to C<enter_link>, or, if that
		2777	fails, to the emergency map position.
		2778
		2779	Might block.
		2780
		2781	=cut
		2782
		2783	sub link_map {
		2784	unless ($LINK_MAP) {
		2785	$LINK_MAP = cf::map::find "{link}"
		2786	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2787	$LINK_MAP->load;
		2788	}
		2789
		2790	$LINK_MAP
		2791	}
		2792
		2793	sub cf::object::player::enter_link {
		2794	my ($self) = @_;
		2795
		2796	$self->deactivate_recursive;
		2797
		2798	++$self->{_link_recursion};
		2799
		2800	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2801
		2802	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2803	if $self->map && $self->map->{path} ne "{link}";
		2804
		2805	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2806	}
		2807
		2808	sub cf::object::player::leave_link {
		2809	my ($self, $map, $x, $y) = @_;
		2810
		2811	return unless $self->contr->active;
		2812
		2813	my $link_pos = delete $self->{_link_pos};
		2814
		2815	unless ($map) {
		2816	# restore original map position
		2817	($map, $x, $y) = @{ $link_pos || [] };
		2818	$map = cf::map::find $map;
		2819
		2820	unless ($map) {
		2821	($map, $x, $y) = @$EMERGENCY_POSITION;
		2822	$map = cf::map::find $map
		2823	or die "FATAL: cannot load emergency map\n";
		2824	}
		2825	}
		2826
		2827	($x, $y) = (-1, -1)
		2828	unless (defined $x) && (defined $y);
		2829
		2830	# use -1 or undef as default coordinates, not 0, 0
		2831	($x, $y) = ($map->enter_x, $map->enter_y)
		2832	if $x <= 0 && $y <= 0;
		2833
		2834	$map->load;
		2835
		2836	return unless $self->contr->active;
		2837
		2838	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2839	if ($self->enter_map ($map, $x, $y)) {
		2840	# entering was successful
		2841	delete $self->{_link_recursion};
		2842	# only activate afterwards, to support waiting in hooks
		2843	$self->activate_recursive;
		2844	}
		2845
		2846	}
		2847
		2848	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2849
		2850	Moves the player to the given map-path and coordinates by first freezing
		2851	her, loading and preparing them map, calling the provided $check callback
		2852	that has to return the map if sucecssful, and then unfreezes the player on
		2853	the new (success) or old (failed) map position. In either case, $done will
		2854	be called at the end of this process.
		2855
		2856	Note that $check will be called with a potentially non-loaded map, so if
		2857	it needs a loaded map it has to call C<< ->load >>.
		2858
		2859	=cut
		2860
		2861	our $GOTOGEN;
		2862
		2863	sub cf::object::player::goto {
		2864	my ($self, $path, $x, $y, $check, $done) = @_;
		2865
		2866	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2867	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2868	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2869	($path, $x, $y) = @$EMERGENCY_POSITION;
		2870	}
		2871
		2872	# do generation counting so two concurrent goto's will be executed in-order
		2873	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2874
		2875	$self->enter_link;
		2876
		2877	(async {
		2878	$Coro::current->{desc} = "player::goto $path $x $y";
		2879
		2880	# *tag paths override both path and x|y
		2881	if ($path =~ /^\*(.*)$/) {
		2882	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2883	my $ob = $obs[rand @obs];
		2884
		2885	# see if we actually can go there
		2886	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2887	$ob = $obs[rand @obs];
		2888	} else {
		2889	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2890	}
		2891	# else put us there anyways for now #d#
		2892
		2893	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2894	} else {
		2895	($path, $x, $y) = (undef, undef, undef);
		2896	}
		2897	}
		2898
		2899	my $map = eval {
		2900	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2901
		2902	if ($map) {
		2903	$map = $map->customise_for ($self);
		2904	$map = $check->($map, $x, $y, $self) if $check && $map;
		2905	} else {
		2906	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2907	}
		2908
		2909	$map
		2910	};
		2911
		2912	if ($@) {
		2913	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2914	LOG llevError | logBacktrace, Carp::longmess $@;
		2915	}
		2916
		2917	if ($gen == $self->{_goto_generation}) {
		2918	delete $self->{_goto_generation};
		2919	$self->leave_link ($map, $x, $y);
		2920	}
		2921
		2922	$done->($self) if $done;
		2923	})->prio (1);
		2924	}
		2925
		2926	=item $player_object->enter_exit ($exit_object)
		2927
		2928	=cut
		2929
		2930	sub parse_random_map_params {
		2931	my ($spec) = @_;
		2932
		2933	my $rmp = { # defaults
		2934	xsize => (cf::rndm 15, 40),
		2935	ysize => (cf::rndm 15, 40),
		2936	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2937	#layout => string,
		2938	};
		2939
		2940	for (split /\n/, $spec) {
		2941	my ($k, $v) = split /\s+/, $_, 2;
		2942
		2943	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2944	}
		2945
		2946	$rmp
		2947	}
		2948
		2949	sub prepare_random_map {
		2950	my ($exit) = @_;
		2951
		2952	# all this does is basically replace the /! path by
		2953	# a new random map path (?random/...) with a seed
		2954	# that depends on the exit object
		2955
		2956	my $rmp = parse_random_map_params $exit->msg;
		2957
		2958	if ($exit->map) {
		2959	$rmp->{region} = $exit->region->name;
		2960	$rmp->{origin_map} = $exit->map->path;
		2961	$rmp->{origin_x} = $exit->x;
		2962	$rmp->{origin_y} = $exit->y;
		2963
		2964	$exit->map->touch;
		2965	}
		2966
		2967	$rmp->{random_seed} ||= $exit->random_seed;
		2968
		2969	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2970	my $md5 = Digest::MD5::md5_hex $data;
		2971	my $meta = "$RANDOMDIR/$md5.meta";
		2972
		2973	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2974	aio_write $fh, 0, (length $data), $data, 0;
		2975	undef $fh;
		2976	aio_rename "$meta~", $meta;
		2977
		2978	my $slaying = "?random/$md5";
		2979
		2980	if ($exit->valid) {
		2981	$exit->slaying ("?random/$md5");
		2982	$exit->msg (undef);
		2983	}
		2984	}
		2985	}
		2986
		2987	sub cf::object::player::enter_exit {
		2988	my ($self, $exit) = @_;
		2989
		2990	return unless $self->type == cf::PLAYER;
		2991
		2992	$self->enter_link;
		2993
		2994	(async {
		2995	$Coro::current->{desc} = "enter_exit";
		2996
		2997	unless (eval {
		2998	$self->deactivate_recursive; # just to be sure
		2999
		3000	my $map = cf::map::normalise $exit->slaying, $exit->map;
		3001	my $x = $exit->stats->hp;
		3002	my $y = $exit->stats->sp;
		3003
		3004	# special map handling
		3005	my $slaying = $exit->slaying;
		3006
		3007	# special map handling
		3008	if ($slaying eq "/!") {
		3009	my $guard = cf::lock_acquire "exit_prepare:$exit";
		3010
		3011	prepare_random_map $exit
		3012	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		3013
		3014	$map = $exit->slaying;
		3015
		3016	} elsif ($slaying eq '!up') {
		3017	$map = $exit->map->tile_path (cf::TILE_UP);
		3018	$x = $exit->x;
		3019	$y = $exit->y;
		3020
		3021	} elsif ($slaying eq '!down') {
		3022	$map = $exit->map->tile_path (cf::TILE_DOWN);
		3023	$x = $exit->x;
		3024	$y = $exit->y;
		3025	}
		3026
		3027	$self->goto ($map, $x, $y);
		3028
		3029	# if exit is damned, update players death & WoR home-position
		3030	$self->contr->savebed ($map, $x, $y)
		3031	if $exit->flag (cf::FLAG_DAMNED);
		3032
		3033	1
		3034	}) {
		3035	$self->message ("Something went wrong deep within the deliantra server. "
		3036	. "I'll try to bring you back to the map you were before. "
		3037	. "Please report this to the dungeon master!",
		3038	cf::NDI_UNIQUE | cf::NDI_RED);
		3039
		3040	error "ERROR in enter_exit: $@";
		3041	$self->leave_link;
		3042	}
		3043	})->prio (1);
		3044	}
		3045
		3046	=head3 cf::client
		3047
		3048	=over 4
		3049
		3050	=item $client->send_drawinfo ($text, $flags)
		3051
		3052	Sends a drawinfo packet to the client. Circumvents output buffering so
		3053	should not be used under normal circumstances.
		3054
		3055	=cut
		3056
		3057	sub cf::client::send_drawinfo {
		3058	my ($self, $text, $flags) = @_;
		3059
		3060	utf8::encode $text;
		3061	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		3062	}
		3063
		3064	=item $client->send_big_packet ($pkt)
		3065
		3066	Like C<send_packet>, but tries to compress large packets, and fragments
		3067	them as required.
		3068
		3069	=cut
		3070
		3071	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3072
		3073	sub cf::client::send_big_packet {
		3074	my ($self, $pkt) = @_;
		3075
		3076	# try lzf for large packets
		3077	$pkt = "lzf " . Compress::LZF::compress $pkt
		3078	if 1024 <= length $pkt and $self->{can_lzf};
		3079
		3080	# split very large packets
		3081	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3082	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3083	$pkt = "frag";
		3084	}
		3085
		3086	$self->send_packet ($pkt);
		3087	}
		3088
		3089	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3090
		3091	Send a drawinfo or msg packet to the client, formatting the msg for the
		3092	client if neccessary. C<$type> should be a string identifying the type of
		3093	the message, with C<log> being the default. If C<$color> is negative, suppress
		3094	the message unless the client supports the msg packet.
		3095
		3096	=cut
		3097
		3098	# non-persistent channels (usually the info channel)
		3099	our %CHANNEL = (
		3100	"c/motd" => {
		3101	id => "infobox",
		3102	title => "MOTD",
		3103	reply => undef,
		3104	tooltip => "The message of the day",
		3105	},
		3106	"c/identify" => {
		3107	id => "infobox",
		3108	title => "Identify",
		3109	reply => undef,
		3110	tooltip => "Items recently identified",
		3111	},
		3112	"c/examine" => {
		3113	id => "infobox",
		3114	title => "Examine",
		3115	reply => undef,
		3116	tooltip => "Signs and other items you examined",
		3117	},
		3118	"c/shopinfo" => {
		3119	id => "infobox",
		3120	title => "Shop Info",
		3121	reply => undef,
		3122	tooltip => "What your bargaining skill tells you about the shop",
		3123	},
		3124	"c/book" => {
		3125	id => "infobox",
		3126	title => "Book",
		3127	reply => undef,
		3128	tooltip => "The contents of a note or book",
		3129	},
		3130	"c/lookat" => {
		3131	id => "infobox",
		3132	title => "Look",
		3133	reply => undef,
		3134	tooltip => "What you saw there",
		3135	},
		3136	"c/who" => {
		3137	id => "infobox",
		3138	title => "Players",
		3139	reply => undef,
		3140	tooltip => "Shows players who are currently online",
		3141	},
		3142	"c/body" => {
		3143	id => "infobox",
		3144	title => "Body Parts",
		3145	reply => undef,
		3146	tooltip => "Shows which body parts you posess and are available",
		3147	},
		3148	"c/statistics" => {
		3149	id => "infobox",
		3150	title => "Statistics",
		3151	reply => undef,
		3152	tooltip => "Shows your primary statistics",
		3153	},
		3154	"c/skills" => {
		3155	id => "infobox",
		3156	title => "Skills",
		3157	reply => undef,
		3158	tooltip => "Shows your experience per skill and item power",
		3159	},
		3160	"c/shopitems" => {
		3161	id => "infobox",
		3162	title => "Shop Items",
		3163	reply => undef,
		3164	tooltip => "Shows the items currently for sale in this shop",
		3165	},
		3166	"c/resistances" => {
		3167	id => "infobox",
		3168	title => "Resistances",
		3169	reply => undef,
		3170	tooltip => "Shows your resistances",
		3171	},
		3172	"c/pets" => {
		3173	id => "infobox",
		3174	title => "Pets",
		3175	reply => undef,
		3176	tooltip => "Shows information abotu your pets/a specific pet",
		3177	},
		3178	"c/perceiveself" => {
		3179	id => "infobox",
		3180	title => "Perceive Self",
		3181	reply => undef,
		3182	tooltip => "You gained detailed knowledge about yourself",
		3183	},
		3184	"c/uptime" => {
		3185	id => "infobox",
		3186	title => "Uptime",
		3187	reply => undef,
		3188	tooltip => "How long the server has been running since last restart",
		3189	},
		3190	"c/mapinfo" => {
		3191	id => "infobox",
		3192	title => "Map Info",
		3193	reply => undef,
		3194	tooltip => "Information related to the maps",
		3195	},
		3196	"c/party" => {
		3197	id => "party",
		3198	title => "Party",
		3199	reply => "gsay ",
		3200	tooltip => "Messages and chat related to your party",
		3201	},
		3202	"c/death" => {
		3203	id => "death",
		3204	title => "Death",
		3205	reply => undef,
		3206	tooltip => "Reason for and more info about your most recent death",
		3207	},
		3208	"c/say" => $SAY_CHANNEL,
		3209	"c/chat" => $CHAT_CHANNEL,
		3210	);
		3211
		3212	sub cf::client::send_msg {
		3213	my ($self, $channel, $msg, $color, @extra) = @_;
		3214
		3215	$msg = $self->pl->expand_cfpod ($msg)
		3216	unless $color & cf::NDI_VERBATIM;
		3217
		3218	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3219
		3220	# check predefined channels, for the benefit of C
		3221	if ($CHANNEL{$channel}) {
		3222	$channel = $CHANNEL{$channel};
		3223
		3224	$self->ext_msg (channel_info => $channel);
		3225	$channel = $channel->{id};
		3226
		3227	} elsif (ref $channel) {
		3228	# send meta info to client, if not yet sent
		3229	unless (exists $self->{channel}{$channel->{id}}) {
		3230	$self->{channel}{$channel->{id}} = $channel;
		3231	$self->ext_msg (channel_info => $channel);
		3232	}
		3233
		3234	$channel = $channel->{id};
		3235	}
		3236
		3237	return unless @extra || length $msg;
		3238
		3239	# default colour, mask it out
		3240	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3241	if $color & cf::NDI_DEF;
		3242
		3243	my $pkt = "msg "
		3244	. $self->{json_coder}->encode (
		3245	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3246	);
		3247
		3248	$self->send_big_packet ($pkt);
		3249	}
		3250
		3251	=item $client->ext_msg ($type, @msg)
		3252
		3253	Sends an ext event to the client.
		3254
		3255	=cut
		3256
		3257	sub cf::client::ext_msg($$@) {
		3258	my ($self, $type, @msg) = @_;
		3259
		3260	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3261	}
		3262
		3263	=item $success = $client->query ($flags, "text", \&cb)
		3264
		3265	Queues a query to the client, calling the given callback with
		3266	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3267	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3268
		3269	Queries can fail, so check the return code. Or don't, as queries will
		3270	become reliable at some point in the future.
		3271
		3272	=cut
		3273
		3274	sub cf::client::query {
		3275	my ($self, $flags, $text, $cb) = @_;
		3276
		3277	return unless $self->state == ST_PLAYING
		3278	|| $self->state == ST_SETUP
		3279	|| $self->state == ST_CUSTOM;
		3280
		3281	$self->state (ST_CUSTOM);
		3282
		3283	utf8::encode $text;
		3284	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3285
		3286	$self->send_packet ($self->{query_queue}[0][0])
		3287	if @{ $self->{query_queue} } == 1;
		3288
		3289	1
		3290	}
		3291
		3292	cf::client->attach (
		3293	on_connect => sub {
		3294	my ($ns) = @_;
		3295
		3296	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3297	},
		3298	on_reply => sub {
		3299	my ($ns, $msg) = @_;
		3300
		3301	# this weird shuffling is so that direct followup queries
		3302	# get handled first
		3303	my $queue = delete $ns->{query_queue}
		3304	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3305
		3306	(shift @$queue)->[1]->($msg);
		3307	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3308
		3309	push @{ $ns->{query_queue} }, @$queue;
		3310
		3311	if (@{ $ns->{query_queue} } == @$queue) {
		3312	if (@$queue) {
		3313	$ns->send_packet ($ns->{query_queue}[0][0]);
		3314	} else {
		3315	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3316	}
		3317	}
		3318	},
		3319	on_exticmd => sub {
		3320	my ($ns, $buf) = @_;
		3321
		3322	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3323
		3324	if (ref $msg) {
		3325	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3326
		3327	if (my $cb = $EXTIACMD{$type}) {
		3328	$cb->(
		3329	$ns,
		3330	sub {
		3331	$ns->ext_msg ("reply-$reply", @_)
		3332	if $reply;
		3333	},
		3334	@payload
		3335	);
		3336	} else {
		3337	my @reply;
		3338
		3339	if (my $cb = $EXTICMD{$type}) {
		3340	@reply = $cb->($ns, @payload);
		3341	}
		3342
		3343	$ns->ext_msg ("reply-$reply", @reply)
		3344	if $reply;
		3345	}
		3346	} else {
		3347	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3348	}
		3349
		3350	cf::override;
		3351	},
		3352	);
		3353
		3354	=item $client->async (\&cb)
		3355
		3356	Create a new coroutine, running the specified callback. The coroutine will
		3357	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3358	or loss of connection).
		3359
		3360	=cut
		3361
		3362	sub cf::client::async {
		3363	my ($self, $cb) = @_;
		3364
		3365	my $coro = &Coro::async ($cb);
		3366
		3367	$coro->on_destroy (sub {
		3368	delete $self->{_coro}{$coro+0};
		3369	});
		3370
		3371	$self->{_coro}{$coro+0} = $coro;
		3372
		3373	$coro
		3374	}
		3375
		3376	cf::client->attach (
		3377	on_client_destroy => sub {
		3378	my ($ns) = @_;
		3379
		3380	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3381	},
		3382	);
		3383
		3384	=back
		3385
845		3386
846	=head2 SAFE SCRIPTING	3387	=head2 SAFE SCRIPTING
847		3388
848	Functions that provide a safe environment to compile and execute	3389	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	3390	snippets of perl code without them endangering the safety of the server
…		…
856	our $safe = new Safe "safe";	3397	our $safe = new Safe "safe";
857	our $safe_hole = new Safe::Hole;	3398	our $safe_hole = new Safe::Hole;
858		3399
859	$SIG{FPE} = 'IGNORE';	3400	$SIG{FPE} = 'IGNORE';
860		3401
861	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3402	$safe->permit_only (Opcode::opset qw(
		3403	:base_core :base_mem :base_orig :base_math :base_loop
		3404	grepstart grepwhile mapstart mapwhile
		3405	sort time
		3406	));
862		3407
863	# here we export the classes and methods available to script code	3408	# here we export the classes and methods available to script code
864		3409
865	=pod	3410	=pod
866		3411
867	The following fucntions and emthods are available within a safe environment:	3412	The following functions and methods are available within a safe environment:
868		3413
869	cf::object contr pay_amount pay_player	3414	cf::object
		3415	contr pay_amount pay_player map x y force_find force_add destroy
		3416	insert remove name archname title slaying race decrease split
		3417	value
		3418
870	cf::object::player player	3419	cf::object::player
871	cf::player peaceful	3420	player
		3421
		3422	cf::player
		3423	peaceful
		3424
		3425	cf::map
		3426	trigger
872		3427
873	=cut	3428	=cut
874		3429
875	for (	3430	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	3431	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3432	insert remove inv nrof name archname title slaying race
		3433	decrease split destroy change_exp value msg lore send_msg)],
877	["cf::object::player" => qw(player)],	3434	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	3435	["cf::player" => qw(peaceful send_msg)],
		3436	["cf::map" => qw(trigger)],
879	) {	3437	) {
880	no strict 'refs';
881	my ($pkg, @funs) = @$_;	3438	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3439	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	3440	for @funs;
884	}	3441	}
885		3442
…		…
900		3457
901	my $qcode = $code;	3458	my $qcode = $code;
902	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3459	$qcode =~ s/"/‟/g; # not allowed in #line filenames
903	$qcode =~ s/\n/\\n/g;	3460	$qcode =~ s/\n/\\n/g;
904		3461
		3462	%vars = (_dummy => 0) unless %vars;
		3463
		3464	my @res;
905	local $_;	3465	local $_;
906	local @safe::cf::_safe_eval_args = values %vars;
907		3466
908	my $eval =	3467	my $eval =
909	"do {\n"	3468	"do {\n"
910	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3469	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
911	. "#line 0 \"{$qcode}\"\n"	3470	. "#line 0 \"{$qcode}\"\n"
912	. $code	3471	. $code
913	. "\n}"	3472	. "\n}"
914	;	3473	;
915		3474
		3475	if ($CFG{safe_eval}) {
916	sub_generation_inc;	3476	sub_generation_inc;
		3477	local @safe::cf::_safe_eval_args = values %vars;
917	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3478	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
918	sub_generation_inc;	3479	sub_generation_inc;
		3480	} else {
		3481	local @cf::_safe_eval_args = values %vars;
		3482	@res = wantarray ? eval eval : scalar eval $eval;
		3483	}
919		3484
920	if ($@) {	3485	if ($@) {
921	warn "$@";	3486	warn "$@",
922	warn "while executing safe code '$code'\n";	3487	"while executing safe code '$code'\n",
923	warn "with arguments " . (join " ", %vars) . "\n";	3488	"with arguments " . (join " ", %vars) . "\n";
924	}	3489	}
925		3490
926	wantarray ? @res : $res[0]	3491	wantarray ? @res : $res[0]
927	}	3492	}
928		3493
…		…
942	=cut	3507	=cut
943		3508
944	sub register_script_function {	3509	sub register_script_function {
945	my ($fun, $cb) = @_;	3510	my ($fun, $cb) = @_;
946		3511
947	no strict 'refs';	3512	$fun = "safe::$fun" if $CFG{safe_eval};
948	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3513	*$fun = $safe_hole->wrap ($cb);
949	}	3514	}
950		3515
951	=back	3516	=back
952		3517
953	=cut	3518	=cut
954		3519
955	#############################################################################	3520	#############################################################################
		3521	# the server's init and main functions
956		3522
957	=head2 EXTENSION DATABASE SUPPORT	3523	our %FACEHASH; # hash => idx, #d# HACK for http server
958		3524
959	Crossfire maintains a very simple database for extension use. It can	3525	# internal api, not fianlised
960	currently store anything that can be serialised using Storable, which	3526	sub set_face {
961	excludes objects.	3527	my ($name, $type, $data) = @_;
962		3528
963	The parameter C<$family> should best start with the name of the extension	3529	my $idx = cf::face::find $name;
964	using it, it should be unique.
965		3530
966	=over 4	3531	if ($idx) {
		3532	delete $FACEHASH{cf::face::get_chksum $idx};
		3533	} else {
		3534	$idx = cf::face::alloc $name;
		3535	}
967		3536
968	=item $hashref = cf::db_get $family	3537	my $hash = cf::face::mangle_chksum Digest::MD5::md5 $data;
969		3538
970	Return a hashref for use by the extension C<$family>, which can be	3539	cf::face::set_type $idx, $type;
971	modified. After modifications, you have to call C<cf::db_dirty> or	3540	cf::face::set_data $idx, 0, $data, $hash;
972	C<cf::db_sync>.	3541	cf::face::set_meta $idx, $type & 1 ? undef : undef;
		3542	$FACEHASH{$hash} = $idx;#d#
973		3543
974	=item $value = cf::db_get $family => $key	3544	$idx
		3545	}
975		3546
976	Returns a single value from the database	3547	sub load_facedata($) {
		3548	my ($path) = @_;
977		3549
978	=item cf::db_put $family => $hashref	3550	# HACK to clear player env face cache, we need some signal framework
		3551	# for this (global event?)
		3552	%ext::player_env::MUSIC_FACE_CACHE = ();
979		3553
980	Stores the given family hashref into the database. Updates are delayed, if	3554	my $enc = JSON::XS->new->utf8->canonical->relaxed;
981	you want the data to be synced to disk immediately, use C<cf::db_sync>.
982		3555
983	=item cf::db_put $family => $key => $value	3556	trace "loading facedata from $path\n";
984		3557
985	Stores the given C<$value> in the family hash. Updates are delayed, if you	3558	my $facedata = decode_storable load_file $path;
986	want the data to be synced to disk immediately, use C<cf::db_sync>.
987		3559
988	=item cf::db_dirty	3560	$facedata->{version} == 2
		3561	or cf::cleanup "$path: version mismatch, cannot proceed.";
989		3562
990	Marks the database as dirty, to be updated at a later time.	3563	cf::cede_to_tick;
991		3564
992	=item cf::db_sync	3565	{
		3566	my $faces = delete $facedata->{faceinfo};
993		3567
994	Immediately write the database to disk I<if it is dirty>.	3568	for my $face (sort keys %$faces) {
		3569	my $info = $faces->{$face};
		3570	my $idx = (cf::face::find $face) || cf::face::alloc $face;
995		3571
996	=cut	3572	cf::face::set_visibility $idx, $info->{visibility};
		3573	cf::face::set_magicmap $idx, $info->{magicmap};
		3574	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3575	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3576	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3577	$FACEHASH{$info->{hash64}} = $idx;#d#
		3578
		3579	cf::cede_to_tick;
		3580	}
997		3581
998	our $DB;	3582	while (my ($face, $info) = each %$faces) {
		3583	next unless $info->{smooth};
		3584
		3585	my $idx = cf::face::find $face
		3586	or next;
		3587
		3588	if (my $smooth = cf::face::find $info->{smooth}) {
		3589	cf::face::set_smooth $idx, $smooth;
		3590	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3591	} else {
		3592	error "smooth face '$info->{smooth}' not found for face '$face'";
		3593	}
		3594
		3595	cf::cede_to_tick;
		3596	}
		3597	}
		3598
		3599	{
		3600	my $anims = delete $facedata->{animinfo};
		3601
		3602	while (my ($anim, $info) = each %$anims) {
		3603	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3604	cf::cede_to_tick;
		3605	}
		3606
		3607	cf::anim::invalidate_all; # d'oh
		3608	}
		3609
		3610	{
		3611	my $res = delete $facedata->{resource};
		3612
		3613	while (my ($name, $info) = each %$res) {
		3614	if (defined (my $type = $info->{type})) {
		3615	# TODO: different hash - must free and use new index, or cache ixface data queue
		3616	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3617
		3618	cf::face::set_type $idx, $type;
		3619	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3620	cf::face::set_meta $idx, $type & 1 ? undef : $info->{meta}; # preserve meta unless prepended already
		3621	$FACEHASH{$info->{hash}} = $idx;#d#
		3622	} else {
		3623	# $RESOURCE{$name} = $info; # unused
		3624	}
		3625
		3626	cf::cede_to_tick;
		3627	}
		3628	}
		3629
		3630	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3631
		3632	1
		3633	}
		3634
		3635	register_exticmd fx_want => sub {
		3636	my ($ns, $want) = @_;
		3637
		3638	while (my ($k, $v) = each %$want) {
		3639	$ns->fx_want ($k, $v);
		3640	}
		3641	};
		3642
		3643	sub load_resource_file($) {
		3644	my $guard = lock_acquire "load_resource_file";
		3645
		3646	my $status = load_resource_file_ $_[0];
		3647	get_slot 0.1, 100;
		3648	cf::arch::commit_load;
		3649
		3650	$status
		3651	}
		3652
		3653	sub reload_exp_table {
		3654	_reload_exp_table;
		3655
		3656	set_face "res/exp_table" => FT_RSRC,
		3657	JSON::XS->new->utf8->canonical->encode (
		3658	[map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]
		3659	);
		3660	}
		3661
		3662	sub reload_materials {
		3663	_reload_materials;
		3664	}
		3665
		3666	sub reload_regions {
		3667	# HACK to clear player env face cache, we need some signal framework
		3668	# for this (global event?)
		3669	%ext::player_env::MUSIC_FACE_CACHE = ();
		3670
		3671	load_resource_file "$MAPDIR/regions"
		3672	or die "unable to load regions file\n";
		3673
		3674	for (cf::region::list) {
		3675	$_->{match} = qr/$_->{match}/
		3676	if exists $_->{match};
		3677	}
		3678	}
		3679
		3680	sub reload_facedata {
		3681	load_facedata "$DATADIR/facedata"
		3682	or die "unable to load facedata\n";
		3683	}
		3684
		3685	sub reload_archetypes {
		3686	load_resource_file "$DATADIR/archetypes"
		3687	or die "unable to load archetypes\n";
		3688
		3689	set_face "res/skill_info" => FT_RSRC,
		3690	JSON::XS->new->utf8->canonical->encode (
		3691	[map [cf::arch::skillvec ($_)->name], 0 .. cf::arch::skillvec_size - 1]
		3692	);
		3693	set_face "res/spell_paths" => FT_RSRC,
		3694	JSON::XS->new->utf8->canonical->encode (
		3695	[map [cf::spellpathnames ($_)], 0 .. NRSPELLPATHS - 1]
		3696	);
		3697	}
		3698
		3699	sub reload_treasures {
		3700	load_resource_file "$DATADIR/treasures"
		3701	or die "unable to load treasurelists\n";
		3702	}
		3703
		3704	sub reload_sound {
		3705	trace "loading sound config from $DATADIR/sound\n";
		3706
		3707	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3708
		3709	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3710	my $sound = $soundconf->{compat}[$_]
		3711	or next;
		3712
		3713	my $face = cf::face::find "sound/$sound->[1]";
		3714	cf::sound::set $sound->[0] => $face;
		3715	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3716	}
		3717
		3718	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3719	my $face = cf::face::find "sound/$v";
		3720	cf::sound::set $k => $face;
		3721	}
		3722	}
		3723
		3724	sub reload_resources {
		3725	trace "reloading resource files...\n";
		3726
		3727	reload_materials;
		3728	reload_facedata;
		3729	reload_exp_table;
		3730	reload_sound;
		3731	reload_archetypes;
		3732	reload_regions;
		3733	reload_treasures;
		3734
		3735	trace "finished reloading resource files\n";
		3736	}
		3737
		3738	sub reload_config {
		3739	trace "reloading config file...\n";
		3740
		3741	my $config = load_file "$CONFDIR/config";
		3742	utf8::decode $config;
		3743	*CFG = decode_yaml $config;
		3744
		3745	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3746
		3747	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3748	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3749
		3750	if (exists $CFG{mlockall}) {
		3751	eval {
		3752	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3753	and die "WARNING: m(un)lockall failed: $!\n";
		3754	};
		3755	warn $@ if $@;
		3756	}
		3757	}
		3758
		3759	sub pidfile() {
		3760	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3761	or die "$PIDFILE: $!";
		3762	flock $fh, &Fcntl::LOCK_EX
		3763	or die "$PIDFILE: flock: $!";
		3764	$fh
		3765	}
		3766
		3767	# make sure only one server instance is running at any one time
		3768	sub atomic {
		3769	my $fh = pidfile;
		3770
		3771	my $pid = <$fh>;
		3772	kill 9, $pid if $pid > 0;
		3773
		3774	seek $fh, 0, 0;
		3775	print $fh $$;
		3776	}
		3777
		3778	sub main_loop {
		3779	trace "EV::loop starting\n";
		3780	if (1) {
		3781	EV::loop;
		3782	}
		3783	trace "EV::loop returned\n";
		3784	goto &main_loop unless $REALLY_UNLOOP;
		3785	}
		3786
		3787	sub main {
		3788	cf::init_globals; # initialise logging
		3789
		3790	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3791	LOG llevInfo, "Copyright (C) 2005-2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3792	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3793	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3794
		3795	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3796
		3797	# we must not ever block the main coroutine
		3798	$Coro::idle = sub {
		3799	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3800	(async {
		3801	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3802	EV::loop EV::LOOP_ONESHOT;
		3803	})->prio (Coro::PRIO_MAX);
		3804	};
		3805
		3806	evthread_start IO::AIO::poll_fileno;
		3807
		3808	cf::sync_job {
		3809	cf::incloader::init ();
		3810
		3811	db_init;
		3812
		3813	cf::init_anim;
		3814	cf::init_attackmess;
		3815	cf::init_dynamic;
		3816
		3817	cf::load_settings;
		3818
		3819	reload_resources;
		3820	reload_config;
		3821
		3822	cf::init_uuid;
		3823	cf::init_signals;
		3824	cf::init_skills;
		3825
		3826	cf::init_beforeplay;
		3827
		3828	atomic;
		3829
		3830	load_extensions;
		3831
		3832	utime time, time, $RUNTIMEFILE;
		3833
		3834	# no (long-running) fork's whatsoever before this point(!)
		3835	use POSIX ();
		3836	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3837
		3838	cf::_post_init 0;
		3839	};
		3840
		3841	cf::object::thawer::errors_are_fatal 0;
		3842	info "parse errors in files are no longer fatal from this point on.\n";
		3843
		3844	AE::postpone {
		3845	undef &main; # free gobs of memory :)
		3846	};
		3847
		3848	goto &main_loop;
		3849	}
		3850
		3851	#############################################################################
		3852	# initialisation and cleanup
		3853
		3854	# install some emergency cleanup handlers
		3855	BEGIN {
		3856	our %SIGWATCHER = ();
		3857	for my $signal (qw(INT HUP TERM)) {
		3858	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3859	cf::cleanup "SIG$signal";
		3860	};
		3861	}
		3862	}
		3863
		3864	sub write_runtime_sync {
		3865	my $t0 = AE::time;
		3866
		3867	# first touch the runtime file to show we are still running:
		3868	# the fsync below can take a very very long time.
		3869
		3870	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3871
		3872	my $guard = cf::lock_acquire "write_runtime";
		3873
		3874	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3875	or return;
		3876
		3877	my $value = $cf::RUNTIME + 90 + 10;
		3878	# 10 is the runtime save interval, for a monotonic clock
		3879	# 60 allows for the watchdog to kill the server.
		3880
		3881	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3882	and return;
		3883
		3884	# always fsync - this file is important
		3885	aio_fsync $fh
		3886	and return;
		3887
		3888	# touch it again to show we are up-to-date
		3889	aio_utime $fh, undef, undef;
		3890
		3891	close $fh
		3892	or return;
		3893
		3894	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3895	and return;
		3896
		3897	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3898
		3899	1
		3900	}
		3901
		3902	our $uuid_lock;
		3903	our $uuid_skip;
		3904
		3905	sub write_uuid_sync($) {
		3906	$uuid_skip ||= $_[0];
		3907
		3908	return if $uuid_lock;
		3909	local $uuid_lock = 1;
		3910
		3911	my $uuid = "$LOCALDIR/uuid";
		3912
		3913	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3914	or return;
		3915
		3916	my $value = uuid_seq uuid_cur;
		3917
		3918	unless ($value) {
		3919	info "cowardly refusing to write zero uuid value!\n";
		3920	return;
		3921	}
		3922
		3923	my $value = uuid_str $value + $uuid_skip;
		3924	$uuid_skip = 0;
		3925
		3926	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3927	and return;
		3928
		3929	# always fsync - this file is important
		3930	aio_fsync $fh
		3931	and return;
		3932
		3933	close $fh
		3934	or return;
		3935
		3936	aio_rename "$uuid~", $uuid
		3937	and return;
		3938
		3939	trace "uuid file written ($value).\n";
		3940
		3941	1
		3942
		3943	}
		3944
		3945	sub write_uuid($$) {
		3946	my ($skip, $sync) = @_;
		3947
		3948	$sync ? write_uuid_sync $skip
		3949	: async { write_uuid_sync $skip };
		3950	}
		3951
		3952	sub emergency_save() {
		3953	my $freeze_guard = cf::freeze_mainloop;
		3954
		3955	info "emergency_perl_save: enter\n";
		3956
		3957	# this is a trade-off: we want to be very quick here, so
		3958	# save all maps without fsync, and later call a global sync
		3959	# (which in turn might be very very slow)
		3960	local $USE_FSYNC = 0;
		3961
		3962	cf::sync_job {
		3963	cf::write_runtime_sync; # external watchdog should not bark
		3964
		3965	# use a peculiar iteration method to avoid tripping on perl
		3966	# refcount bugs in for. also avoids problems with players
		3967	# and maps saved/destroyed asynchronously.
		3968	info "emergency_perl_save: begin player save\n";
		3969	for my $login (keys %cf::PLAYER) {
		3970	my $pl = $cf::PLAYER{$login} or next;
		3971	$pl->valid or next;
		3972	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3973	$pl->save;
		3974	}
		3975	info "emergency_perl_save: end player save\n";
		3976
		3977	cf::write_runtime_sync; # external watchdog should not bark
		3978
		3979	info "emergency_perl_save: begin map save\n";
		3980	for my $path (keys %cf::MAP) {
		3981	my $map = $cf::MAP{$path} or next;
		3982	$map->valid or next;
		3983	$map->save;
		3984	}
		3985	info "emergency_perl_save: end map save\n";
		3986
		3987	cf::write_runtime_sync; # external watchdog should not bark
		3988
		3989	info "emergency_perl_save: begin database checkpoint\n";
		3990	BDB::db_env_txn_checkpoint $DB_ENV;
		3991	info "emergency_perl_save: end database checkpoint\n";
		3992
		3993	info "emergency_perl_save: begin write uuid\n";
		3994	write_uuid_sync 1;
		3995	info "emergency_perl_save: end write uuid\n";
		3996
		3997	cf::write_runtime_sync; # external watchdog should not bark
		3998
		3999	trace "emergency_perl_save: syncing database to disk";
		4000	BDB::db_env_txn_checkpoint $DB_ENV;
		4001
		4002	info "emergency_perl_save: starting sync\n";
		4003	IO::AIO::aio_sync sub {
		4004	info "emergency_perl_save: finished sync\n";
		4005	};
		4006
		4007	cf::write_runtime_sync; # external watchdog should not bark
		4008
		4009	trace "emergency_perl_save: flushing outstanding aio requests";
		4010	while (IO::AIO::nreqs || BDB::nreqs) {
		4011	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		4012	}
		4013
		4014	cf::write_runtime_sync; # external watchdog should not bark
		4015	};
		4016
		4017	info "emergency_perl_save: leave\n";
		4018	}
		4019
		4020	sub post_cleanup {
		4021	my ($make_core) = @_;
		4022
		4023	IO::AIO::flush;
		4024
		4025	error Carp::longmess "post_cleanup backtrace"
		4026	if $make_core;
		4027
		4028	my $fh = pidfile;
		4029	unlink $PIDFILE if <$fh> == $$;
		4030	}
		4031
		4032	# a safer delete_package, copied from Symbol
		4033	sub clear_package($) {
		4034	my $pkg = shift;
		4035
		4036	# expand to full symbol table name if needed
		4037	unless ($pkg =~ /^main::.*::$/) {
		4038	$pkg = "main$pkg" if $pkg =~ /^::/;
		4039	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		4040	$pkg .= '::' unless $pkg =~ /::$/;
		4041	}
		4042
		4043	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		4044	my $stem_symtab = *{$stem}{HASH};
		4045
		4046	defined $stem_symtab and exists $stem_symtab->{$leaf}
		4047	or return;
		4048
		4049	# clear all symbols
		4050	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		4051	for my $name (keys %$leaf_symtab) {
		4052	_gv_clear *{"$pkg$name"};
		4053	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		4054	}
		4055	}
		4056
		4057	sub do_reload_perl() {
		4058	# can/must only be called in main
		4059	unless (in_main) {
		4060	error "can only reload from main coroutine";
		4061	return;
		4062	}
		4063
		4064	return if $RELOAD++;
		4065
		4066	my $t1 = AE::time;
		4067
		4068	while ($RELOAD) {
		4069	cf::get_slot 0.1, -1, "reload_perl";
		4070	info "perl_reload: reloading...";
		4071
		4072	trace "perl_reload: entering sync_job";
		4073
		4074	cf::sync_job {
		4075	#cf::emergency_save;
		4076
		4077	trace "perl_reload: cancelling all extension coros";
		4078	$_->cancel for values %EXT_CORO;
		4079	%EXT_CORO = ();
		4080
		4081	trace "perl_reload: removing commands";
		4082	%COMMAND = ();
		4083
		4084	trace "perl_reload: removing ext/exti commands";
		4085	%EXTCMD = ();
		4086	%EXTICMD = ();
		4087
		4088	trace "perl_reload: unloading/nuking all extensions";
		4089	for my $pkg (@EXTS) {
		4090	trace "... unloading $pkg";
		4091
		4092	if (my $cb = $pkg->can ("unload")) {
		4093	eval {
		4094	$cb->($pkg);
		4095	1
		4096	} or error "$pkg unloaded, but with errors: $@";
		4097	}
		4098
		4099	trace "... clearing $pkg";
		4100	clear_package $pkg;
		4101	}
		4102
		4103	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4104	while (my ($k, $v) = each %INC) {
		4105	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4106
		4107	trace "... unloading $k";
		4108	delete $INC{$k};
		4109
		4110	$k =~ s/\.pm$//;
		4111	$k =~ s/\//::/g;
		4112
		4113	if (my $cb = $k->can ("unload_module")) {
		4114	$cb->();
		4115	}
		4116
		4117	clear_package $k;
		4118	}
		4119
		4120	trace "perl_reload: getting rid of safe::, as good as possible";
		4121	clear_package "safe::$_"
		4122	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4123
		4124	trace "perl_reload: unloading cf.pm \"a bit\"";
		4125	delete $INC{"cf.pm"};
		4126	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4127
		4128	# don't, removes xs symbols, too,
		4129	# and global variables created in xs
		4130	#clear_package __PACKAGE__;
		4131
		4132	info "perl_reload: unload completed, starting to reload now";
		4133
		4134	trace "perl_reload: reloading cf.pm";
		4135	require cf;
		4136	cf::_connect_to_perl_1;
		4137
		4138	trace "perl_reload: loading config and database again";
		4139	cf::reload_config;
		4140
		4141	trace "perl_reload: loading extensions";
		4142	cf::load_extensions;
		4143
		4144	if ($REATTACH_ON_RELOAD) {
		4145	trace "perl_reload: reattaching attachments to objects/players";
		4146	_global_reattach; # objects, sockets
		4147	trace "perl_reload: reattaching attachments to maps";
		4148	reattach $_ for values %MAP;
		4149	trace "perl_reload: reattaching attachments to players";
		4150	reattach $_ for values %PLAYER;
		4151	}
		4152
		4153	cf::_post_init 1;
		4154
		4155	trace "perl_reload: leaving sync_job";
		4156
		4157	1
		4158	} or do {
		4159	error $@;
		4160	cf::cleanup "perl_reload: error, exiting.";
		4161	};
		4162
		4163	--$RELOAD;
		4164	}
		4165
		4166	$t1 = AE::time - $t1;
		4167	info "perl_reload: completed in ${t1}s\n";
		4168	};
		4169
		4170	our $RELOAD_WATCHER; # used only during reload
		4171
		4172	sub reload_perl() {
		4173	# doing reload synchronously and two reloads happen back-to-back,
		4174	# coro crashes during coro_state_free->destroy here.
		4175
		4176	$RELOAD_WATCHER ||= cf::async {
		4177	Coro::AIO::aio_wait cache_extensions;
		4178
		4179	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4180	do_reload_perl;
		4181	undef $RELOAD_WATCHER;
		4182	};
		4183	};
		4184	}
		4185
		4186	register_command "reload" => sub {
		4187	my ($who, $arg) = @_;
		4188
		4189	if ($who->flag (FLAG_WIZ)) {
		4190	$who->message ("reloading server.");
		4191	async {
		4192	$Coro::current->{desc} = "perl_reload";
		4193	reload_perl;
		4194	};
		4195	}
		4196	};
		4197
		4198	#############################################################################
		4199
		4200	my $bug_warning = 0;
		4201
		4202	sub wait_for_tick() {
		4203	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4204
		4205	$WAIT_FOR_TICK->wait;
		4206	}
		4207
		4208	sub wait_for_tick_begin() {
		4209	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4210
		4211	my $signal = new Coro::Signal;
		4212	push @WAIT_FOR_TICK_BEGIN, $signal;
		4213	$signal->wait;
		4214	}
		4215
		4216	sub tick {
		4217	if ($Coro::current != $Coro::main) {
		4218	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4219	unless ++$bug_warning > 10;
		4220	return;
		4221	}
		4222
		4223	cf::one_tick; # one server iteration
		4224
		4225	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4226
		4227	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4228	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4229	Coro::async_pool {
		4230	$Coro::current->{desc} = "runtime saver";
		4231	write_runtime_sync
		4232	or error "ERROR: unable to write runtime file: $!";
		4233	};
		4234	}
		4235
		4236	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4237	$sig->send;
		4238	}
		4239	$WAIT_FOR_TICK->broadcast;
		4240
		4241	$LOAD = ($NOW - $TICK_START) / $TICK;
		4242	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4243
		4244	if (0) {
		4245	if ($NEXT_TICK) {
		4246	my $jitter = $TICK_START - $NEXT_TICK;
		4247	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4248	debug "jitter $JITTER\n";#d#
		4249	}
		4250	}
		4251	}
999		4252
1000	{	4253	{
1001	my $path = cf::localdir . "/database.pst";	4254	# configure BDB
		4255	info "initialising database";
1002		4256
1003	sub db_load() {	4257	BDB::min_parallel 16;
1004	warn "loading database $path\n";#d# remove later	4258	BDB::max_poll_reqs $TICK * 0.1;
1005	$DB = stat $path ? Storable::retrieve $path : { };	4259	#$AnyEvent::BDB::WATCHER->priority (1);
1006	}
1007		4260
1008	my $pid;	4261	unless ($DB_ENV) {
		4262	$DB_ENV = BDB::db_env_create;
		4263	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4264	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4265	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4266	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4267	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1009		4268
1010	sub db_save() {	4269	cf::sync_job {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;
1017	cf::_exit 0 if defined $pid;
1018	}
1019	}
1020
1021	my $dirty;
1022
1023	sub db_sync() {
1024	db_save if $dirty;
1025	undef $dirty;
1026	}
1027
1028	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1029	db_sync;
1030	});
1031
1032	sub db_dirty() {
1033	$dirty = 1;
1034	$idle->start;
1035	}
1036
1037	sub db_get($;$) {
1038	@_ >= 2
1039	? $DB->{$_[0]}{$_[1]}
1040	: ($DB->{$_[0]} ||= { })
1041	}
1042
1043	sub db_put($$;$) {
1044	if (@_ >= 3) {
1045	$DB->{$_[0]}{$_[1]} = $_[2];
1046	} else {	4270	eval {
1047	$DB->{$_[0]} = $_[1];	4271	BDB::db_env_open
1048	}	4272	$DB_ENV,
1049	db_dirty;	4273	$BDBDIR,
1050	}	4274	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4275	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4276	0666;
1051		4277
1052	attach_global	4278	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1053	prio => 10000,
1054	on_cleanup => sub {
1055	db_sync;
1056	},
1057	;
1058	}
1059
1060	#############################################################################
1061	# the server's main()
1062
1063	sub cfg_load {
1064	open my $fh, "<:utf8", cf::confdir . "/config"
1065	or return;
1066
1067	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;
1069	}
1070
1071	sub main {
1072	cfg_load;
1073	db_load;
1074	load_extensions;
1075	Event::loop;
1076	}
1077
1078	#############################################################################
1079	# initialisation
1080
1081	sub _perl_reload(&) {
1082	my ($msg) = @_;
1083
1084	$msg->("reloading...");
1085
1086	eval {
1087	# cancel all watchers
1088	$_->cancel for Event::all_watchers;
1089
1090	# unload all extensions
1091	for (@exts) {
1092	$msg->("unloading <$_>");
1093	unload_extension $_;
1094	}
1095
1096	# unload all modules loaded from $LIBDIR
1097	while (my ($k, $v) = each %INC) {
1098	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1099
1100	$msg->("removing <$k>");
1101	delete $INC{$k};
1102
1103	$k =~ s/\.pm$//;
1104	$k =~ s/\//::/g;
1105
1106	if (my $cb = $k->can ("unload_module")) {
1107	$cb->();
1108	}	4279	};
1109		4280
1110	Symbol::delete_package $k;	4281	cf::cleanup "db_env_open(db): $@" if $@;
1111	}	4282	};
		4283	}
1112		4284
1113	# sync database to disk	4285	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1114	cf::db_sync;	4286	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1115
1116	# get rid of safe::, as good as possible
1117	Symbol::delete_package "safe::$_"
1118	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1119
1120	# remove register_script_function callbacks
1121	# TODO
1122
1123	# unload cf.pm "a bit"
1124	delete $INC{"cf.pm"};
1125
1126	# don't, removes xs symbols, too,
1127	# and global variables created in xs
1128	#Symbol::delete_package __PACKAGE__;
1129
1130	# reload cf.pm
1131	$msg->("reloading cf.pm");
1132	require cf;
1133
1134	# load config and database again
1135	cf::cfg_load;
1136	cf::db_load;
1137
1138	# load extensions
1139	$msg->("load extensions");
1140	cf::load_extensions;
1141
1142	# reattach attachments to objects
1143	$msg->("reattach");
1144	_global_reattach;
1145	};	4287	};
1146	$msg->($@) if $@;	4288	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1147		4289	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1148	$msg->("reloaded");
1149	};
1150
1151	sub perl_reload() {
1152	_perl_reload {
1153	warn $_[0];
1154	print "$_[0]\n";
1155	};	4290	};
1156	}	4291	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4292	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4293	};
1157		4294
1158	register_command "perl-reload", 0, sub {	4295	info "database initialised";
		4296	}
		4297
		4298	{
		4299	# configure IO::AIO
		4300
		4301	info "initialising aio";
		4302	IO::AIO::min_parallel 8;
		4303	IO::AIO::max_poll_time $TICK * 0.1;
		4304	undef $AnyEvent::AIO::WATCHER;
		4305	info "aio initialised";
		4306	}
		4307
		4308	our $_log_backtrace;
		4309	our $_log_backtrace_last;
		4310
		4311	sub _log_backtrace {
1159	my ($who, $arg) = @_;	4312	my ($msg, @addr) = @_;
1160		4313
1161	if ($who->flag (FLAG_WIZ)) {	4314	$msg =~ s/\n$//;
1162	_perl_reload {	4315
1163	warn $_[0];	4316	if ($_log_backtrace_last eq $msg) {
1164	$who->message ($_[0]);	4317	LOG llevInfo, "[ABT] $msg\n";
		4318	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4319	# limit the # of concurrent backtraces
		4320	} elsif ($_log_backtrace < 2) {
		4321	$_log_backtrace_last = $msg;
		4322	++$_log_backtrace;
		4323	my $perl_bt = Carp::longmess $msg;
		4324	async {
		4325	$Coro::current->{desc} = "abt $msg";
		4326
		4327	my @bt = fork_call {
		4328	@addr = map { sprintf "%x", $_ } @addr;
		4329	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4330	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4331	or die "addr2line: $!";
		4332
		4333	my @funcs;
		4334	my @res = <$fh>;
		4335	chomp for @res;
		4336	while (@res) {
		4337	my ($func, $line) = splice @res, 0, 2, ();
		4338	push @funcs, "[$func] $line";
		4339	}
		4340
		4341	@funcs
		4342	};
		4343
		4344	LOG llevInfo, "[ABT] $perl_bt\n";
		4345	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4346	LOG llevInfo, "[ABT] $_\n" for @bt;
		4347	--$_log_backtrace;
1165	};	4348	};
1166	}	4349	} else {
1167	};	4350	LOG llevInfo, "[ABT] $msg\n";
1168		4351	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1169	register "<global>", __PACKAGE__;
1170
1171	unshift @INC, $LIBDIR;
1172
1173	$TICK_WATCHER = Event->timer (
1174	prio => 1,
1175	async => 1,
1176	at => $NEXT_TICK || 1,
1177	cb => sub {
1178	cf::server_tick; # one server iteration
1179
1180	my $NOW = Event::time;
1181	$NEXT_TICK += $TICK;
1182
1183	# if we are delayed by four ticks or more, skip them all
1184	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1185
1186	$TICK_WATCHER->at ($NEXT_TICK);
1187	$TICK_WATCHER->start;
1188	},	4352	}
1189	);	4353	}
1190		4354
1191	IO::AIO::max_poll_time $TICK * 0.2;	4355	# load additional modules
		4356	require "cf/$_.pm" for @EXTRA_MODULES;
		4357	cf::_connect_to_perl_2;
1192		4358
1193	Event->io (fd => IO::AIO::poll_fileno,	4359	END { cf::emergency_save }
1194	poll => 'r',
1195	prio => 5,
1196	cb => \&IO::AIO::poll_cb);
1197		4360
1198	1	4361	1
1199		4362

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