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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.92 by root, Thu Dec 21 06:42:28 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
		72
		73	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		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" };
20		81
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	82	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		83
		84	our @ORIG_INC;
22		85
23	our %COMMAND = ();	86	our %COMMAND = ();
24	our %COMMAND_TIME = ();	87	our %COMMAND_TIME = ();
		88
		89	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	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
26		96
27	_init_vars;	97	our $RELOAD; # number of reloads so far, non-zero while in reload
28
29	our @EVENT;	98	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	99	our @REFLECT; # set by XS
		100	our %REFLECT; # set by us
31		101
32	our $TICK = MAX_TIME * 1e-6;	102	our $CONFDIR = confdir;
33	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
34	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);
35		137
36	our %CFG;	138	our %CFG;
		139	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
37		140
38	our $UPTIME; $UPTIME ||= time;	141	our $UPTIME; $UPTIME ||= time;
		142	our $RUNTIME = 0;
		143	our $SERVER_TICK = 0;
		144	our $NOW;
		145
		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	}
39		188
40	#############################################################################	189	#############################################################################
41		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
42	=head2 GLOBAL VARIABLES	202	=head2 GLOBAL VARIABLES
43		203
44	=over 4	204	=over 4
45		205
46	=item $cf::UPTIME	206	=item $cf::UPTIME
47		207
48	The timestamp of the server start (so not actually an uptime).	208	The timestamp of the server start (so not actually an "uptime").
49		209
50	=item $cf::LIBDIR	210	=item $cf::SERVER_TICK
51		211
52	The perl library directory, where extensions and cf-specific modules can	212	An unsigned integer that starts at zero when the server is started and is
53	be found. It will be added to C<@INC> automatically.	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.
54		220
55	=item $cf::TICK	221	=item $cf::TICK
56		222
57	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 $cf::LOAD
		246
		247	The raw value load value from the last tick.
58		248
59	=item %cf::CFG	249	=item %cf::CFG
60		250
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	251	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
62	from wherever your confdir points to.	252	from wherever your confdir points to.
63		253
		254	=item cf::wait_for_tick, cf::wait_for_tick_begin
		255
		256	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		257	returns directly I<after> the tick processing (and consequently, can only wake one thread
		258	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		259
		260	Note that cf::Wait_for_tick will immediately return when the server is not
		261	ticking, making it suitable for small pauses in threads that need to run
		262	when the server is paused. If that is not applicable (i.e. you I<really>
		263	want to wait, use C<$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
64	=back	289	=back
65		290
66	=cut	291	=cut
67		292
68	BEGIN {	293	sub error(@) { LOG llevError, join "", @_ }
69	*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 {
70	my $msg = join "", @_;	300	my $msg = join "", @_;
		301
71	$msg .= "\n"	302	$msg .= "\n"
72	unless $msg =~ /\n$/;	303	unless $msg =~ /\n$/;
73		304
74	print STDERR "cfperl: $msg";	305	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
75	LOG llevError, "cfperl: $msg";
76	};
77	}
78		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';
79	@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)
80		331
81	# 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
82	# within the Safe compartment.	333	# within the Safe compartment.
83	for my $pkg (qw(	334	for my $pkg (qw(
		335	cf::global cf::attachable
84	cf::object cf::object::player	336	cf::object cf::object::player
85	cf::client cf::player	337	cf::client cf::player
86	cf::arch cf::living	338	cf::arch cf::living
		339	cf::map cf::mapspace
87	cf::map cf::party cf::region	340	cf::party cf::region
88	)) {	341	)) {
89	no strict 'refs';
90	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	342	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
91	}	343	}
92		344
93	$Event::DIED = sub {	345	$EV::DIED = sub {
94	warn "error in event callback: @_";	346	warn "error in event callback: $@";
95	};	347	};
96		348
97	my %ext_pkg;	349	#############################################################################
98	my @exts;	350
99	my @hook;	351	sub fork_call(&@);
		352	sub get_slot($;$$);
		353
		354	#############################################################################
100		355
101	=head2 UTILITY FUNCTIONS	356	=head2 UTILITY FUNCTIONS
102		357
103	=over 4	358	=over 4
104		359
105	=cut	360	=item dumpval $ref
106		361
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	362	=cut
108		363
		364	sub dumpval {
		365	eval {
		366	local $SIG{__DIE__};
		367	my $d;
		368	if (1) {
		369	$d = new Data::Dumper([$_[0]], ["*var"]);
		370	$d->Terse(1);
		371	$d->Indent(2);
		372	$d->Quotekeys(0);
		373	$d->Useqq(1);
		374	#$d->Bless(...);
		375	$d->Seen($_[1]) if @_ > 1;
		376	$d = $d->Dump();
		377	}
		378	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		379	$d
		380	} || "[unable to dump $_[0]: '$@']";
		381	}
		382
		383	=item $scalar = cf::load_file $path
		384
		385	Loads the given file from path and returns its contents. Croaks on error
		386	and can block.
		387
		388	=cut
		389
		390	sub load_file($) {
		391	0 <= aio_load $_[0], my $data
		392	or Carp::croak "$_[0]: $!";
		393
		394	$data
		395	}
		396
		397	=item $success = cf::replace_file $path, $data, $sync
		398
		399	Atomically replaces the file at the given $path with new $data, and
		400	optionally $sync the data to disk before replacing the file.
		401
		402	=cut
		403
		404	sub replace_file($$;$) {
		405	my ($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
109	=item $ref = cf::from_json $json	435	=item $ref = cf::decode_json $json
110		436
111	Converts a JSON string into the corresponding perl data structure.	437	Converts a JSON string into the corresponding perl data structure.
112		438
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	439	=item $json = cf::encode_json $ref
121		440
122	Converts a perl data structure into its JSON representation.	441	Converts a perl data structure into its JSON representation.
123		442
124	=cut	443	=cut
125		444
126	sub to_json($) {	445	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	446
128	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 });
129	}	930	}
130		931
131	=back	932	=back
132		933
133	=cut	934	=cut
134		935
135	#############################################################################	936	#############################################################################
136		937
137	=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).
138		947
139	=over 4	948	=over 4
140		949
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)
154
155	=item $map->detach ($attachment)
156
157	Attach/detach a pre-registered attachment to a client.
158
159	=item $client->attach ($attachment, key => $value...)	950	=item $attachable->attach ($attachment, key => $value...)
160		951
161	=item $client->detach ($attachment)	952	=item $attachable->detach ($attachment)
162		953
163	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.
164		956
165	=item $bool = $object->attached ($name)	957	Example, attach a minesweeper attachment to the given object, making it a
		958	10x10 minesweeper game:
166		959
167	=item $bool = $player->attached ($name)	960	$obj->attach (minesweeper => width => 10, height => 10);
168		961
169	=item $bool = $client->attached ($name)	962	=item $bool = $attachable->attached ($name)
170
171	=item $bool = $map->attached ($name)
172		963
173	Checks wether the named attachment is currently attached to the object.	964	Checks wether the named attachment is currently attached to the object.
174		965
175	=item cf::attach_global ...	966	=item cf::CLASS->attach ...
176		967
177	Attach handlers for global events.	968	=item cf::CLASS->detach ...
178		969
179	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
180	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:
181		1004
182	=over 4	1005	=over 4
183		1006
184	=item prio => $number	1007	=item prio => $number
185		1008
…		…
187	by another C<prio> setting). Lower priority handlers get executed	1010	by another C<prio> setting). Lower priority handlers get executed
188	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
189	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
190	unless you know what you are doing.	1013	unless you know what you are doing.
191		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
192	=item on_I<event> => \&cb	1021	=item on_I<event> => \&cb
193		1022
194	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
195	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
196	handlers are recognised generally depends on the type of object these	1025	handlers are recognised generally depends on the type of object these
…		…
205	package and register them. Only handlers for eevents supported by the	1034	package and register them. Only handlers for eevents supported by the
206	object/class are recognised.	1035	object/class are recognised.
207		1036
208	=back	1037	=back
209		1038
210	=item cf::attach_to_type $object_type, $subtype, ...	1039	Example, define an attachment called "sockpuppet" that calls the given
		1040	event handler when a monster attacks:
211		1041
212	Attach handlers for a specific object type (e.g. TRANSPORT) and	1042	cf::object::attachment sockpuppet =>
213	subtype. If C<$subtype> is zero or undef, matches all objects of the given	1043	on_skill_attack => sub {
214	type.	1044	my ($self, $victim) = @_;
215		1045	...
216	=item cf::attach_to_objects ...
217
218	Attach handlers to all objects. Do not use this except for debugging or
219	very rare events, as handlers are (obviously) called for I<all> objects in
220	the game.
221
222	=item cf::attach_to_players ...
223
224	Attach handlers to all players.
225
226	=item cf::attach_to_clients ...
227
228	Attach handlers to all players.
229
230	=item cf::attach_to_maps ...
231
232	Attach handlers to all maps.
233
234	=item cf:register_attachment $name, ...
235
236	Register an attachment by name through which objects can refer to this
237	attachment.
238
239	=item cf:register_player_attachment $name, ...
240
241	Register an attachment by name through which players can refer to this
242	attachment.
243
244	=item cf:register_map_attachment $name, ...
245
246	Register an attachment by name through which maps can refer to this
247	attachment.
248
249	=cut
250
251	# the following variables are defined in .xs and must not be re-created
252	our @CB_GLOBAL = (); # registry for all global events
253	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
254	our @CB_PLAYER = ();
255	our @CB_CLIENT = ();
256	our @CB_TYPE = (); # registry for type (cf-object class) based events
257	our @CB_MAP = ();
258
259	my %attachment;
260
261	sub _attach_cb($\%$$$) {
262	my ($registry, $undo, $event, $prio, $cb) = @_;
263
264	use sort 'stable';
265
266	$cb = [$prio, $cb];
267
268	@{$registry->[$event]} = sort
269	{ $a->[0] cmp $b->[0] }
270	@{$registry->[$event] || []}, $cb;
271
272	push @{$undo->{cb}}, [$event, $cb];
273	}
274
275	# attach handles attaching event callbacks
276	# the only thing the caller has to do is pass the correct
277	# registry (== where the callback attaches to).
278	sub _attach(\@$@) {
279	my ($registry, $klass, @arg) = @_;
280
281	my $prio = 0;
282
283	my %undo = (
284	registry => $registry,
285	cb => [],
286	);
287
288	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
289
290	while (@arg) {
291	my $type = shift @arg;
292
293	if ($type eq "prio") {
294	$prio = shift @arg;
295
296	} elsif ($type eq "package") {
297	my $pkg = shift @arg;
298
299	while (my ($name, $id) = each %cb_id) {
300	if (my $cb = $pkg->can ($name)) {
301	_attach_cb $registry, %undo, $id, $prio, $cb;
302	}
303	}	1046	}
304
305	} elsif (exists $cb_id{$type}) {
306	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
307
308	} elsif (ref $type) {
309	warn "attaching objects not supported, ignoring.\n";
310
311	} else {
312	shift @arg;
313	warn "attach argument '$type' not supported, ignoring.\n";
314	}
315	}
316
317	\%undo
318	}
319
320	sub _attach_attachment {
321	my ($obj, $name, %arg) = @_;
322
323	return if exists $obj->{_attachment}{$name};
324
325	my $res;
326
327	if (my $attach = $attachment{$name}) {
328	my $registry = $obj->registry;
329
330	for (@$attach) {
331	my ($klass, @attach) = @$_;
332	$res = _attach @$registry, $klass, @attach;
333	}
334
335	$obj->{$name} = \%arg;
336	} else {
337	warn "object uses attachment '$name' that is not available, postponing.\n";
338	}
339
340	$obj->{_attachment}{$name} = undef;
341
342	$res->{attachment} = $name;
343	$res
344	}
345
346	*cf::object::attach =
347	*cf::player::attach =
348	*cf::client::attach =
349	*cf::map::attach = sub {
350	my ($obj, $name, %arg) = @_;
351
352	_attach_attachment $obj, $name, %arg;
353	};
354
355	# all those should be optimised
356	*cf::object::detach =
357	*cf::player::detach =
358	*cf::client::detach =
359	*cf::map::detach = sub {
360	my ($obj, $name) = @_;
361
362	delete $obj->{_attachment}{$name};
363	reattach ($obj);
364	};
365
366	*cf::object::attached =
367	*cf::player::attached =
368	*cf::client::attached =
369	*cf::map::attached = sub {
370	my ($obj, $name) = @_;
371
372	exists $obj->{_attachment}{$name}
373	};
374
375	sub attach_global {
376	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
377	}
378
379	sub attach_to_type {
380	my $type = shift;
381	my $subtype = shift;
382
383	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
384	}
385
386	sub attach_to_objects {
387	_attach @CB_OBJECT, KLASS_OBJECT, @_
388	}
389
390	sub attach_to_players {
391	_attach @CB_PLAYER, KLASS_PLAYER, @_
392	}
393
394	sub attach_to_clients {
395	_attach @CB_CLIENT, KLASS_CLIENT, @_
396	}
397
398	sub attach_to_maps {
399	_attach @CB_MAP, KLASS_MAP, @_
400	}
401
402	sub register_attachment {
403	my $name = shift;
404
405	$attachment{$name} = [[KLASS_OBJECT, @_]];
406	}
407
408	sub register_player_attachment {
409	my $name = shift;
410
411	$attachment{$name} = [[KLASS_PLAYER, @_]];
412	}
413
414	sub register_client_attachment {
415	my $name = shift;
416
417	$attachment{$name} = [[KLASS_CLIENT, @_]];
418	}
419
420	sub register_map_attachment {
421	my $name = shift;
422
423	$attachment{$name} = [[KLASS_MAP, @_]];
424	}
425
426	our $override;
427	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
428
429	sub override {
430	$override = 1;
431	@invoke_results = ();
432	}
433
434	sub do_invoke {
435	my $event = shift;
436	my $callbacks = shift;
437
438	@invoke_results = ();
439
440	local $override;
441
442	for (@$callbacks) {
443	eval { &{$_->[1]} };
444
445	if ($@) {
446	warn "$@";
447	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
448	override;
449	}
450
451	return 1 if $override;
452	}
453
454	0	1047	}
455	}
456		1048
457	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1049	=item $attachable->valid
458
459	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
460
461	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
462
463	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
464
465	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
466
467	Generate a global/object/player/map-specific event with the given arguments.
468
469	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
470	removed in future versions), and there is no public API to access override
471	results (if you must, access C<@cf::invoke_results> directly).
472
473	=back
474
475	=cut
476
477	#############################################################################
478
479	=head2 METHODS VALID FOR ALL CORE OBJECTS
480
481	=over 4
482
483	=item $object->valid, $player->valid, $client->valid, $map->valid
484		1050
485	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
486	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
487	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
488	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
489	exception.	1055	exception.
490		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
491	=back	1247	=back
492		1248
493	=cut	1249	=cut
494
495	*cf::object::valid =
496	*cf::player::valid =
497	*cf::client::valid =
498	*cf::map::valid = \&cf::_valid;
499		1250
500	#############################################################################	1251	#############################################################################
501	# object support	1252	# object support
502		1253
503	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 {
504	my ($obj, $data) = @_;	1288	my ($ob1, $ob2) = @_;
505		1289
506	$data = from_json $data;	1290	++$SLOW_MERGES;#d#
507		1291
508	for (@$data) {	1292	# we do the slow way here
509	my ($name, $args) = @$_;	1293	return _object_equal $ob1, $ob2
510
511	$obj->attach ($name, %{$args || {} });
512	}
513	}	1294	}
514		1295
515	# basically do the same as instantiate, without calling instantiate
516	sub reattach {	1296	sub reattach {
		1297	# basically do the same as instantiate, without calling instantiate
517	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
518	my $registry = $obj->registry;	1303	my $registry = $obj->registry;
519		1304
520	@$registry = ();	1305	@$registry = ();
521		1306
522	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1307	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
523		1308
524	for my $name (keys %{ $obj->{_attachment} || {} }) {	1309	for my $name (keys %{ $obj->{_attachment} || {} }) {
525	if (my $attach = $attachment{$name}) {	1310	if (my $attach = $attachment{$name}) {
526	for (@$attach) {	1311	for (@$attach) {
527	my ($klass, @attach) = @$_;	1312	my ($klass, @attach) = @$_;
528	_attach @$registry, $klass, @attach;	1313	_attach $registry, $klass, @attach;
529	}	1314	}
530	} else {	1315	} else {
531	warn "object uses attachment '$name' that is not available, postponing.\n";	1316	info "object uses attachment '$name' that is not available, postponing.\n";
532	}
533	}
534	}
535
536	sub object_freezer_save {
537	my ($filename, $rdata, $objs) = @_;
538
539	if (length $$rdata) {
540	warn sprintf "saving %s (%d,%d)\n",
541	$filename, length $$rdata, scalar @$objs;
542
543	if (open my $fh, ">:raw", "$filename~") {
544	chmod SAVE_MODE, $fh;
545	syswrite $fh, $$rdata;
546	close $fh;
547
548	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
549	chmod SAVE_MODE, $fh;
550	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
551	close $fh;
552	rename "$filename.pst~", "$filename.pst";
553	} else {
554	unlink "$filename.pst";
555	}	1317	}
556
557	rename "$filename~", $filename;
558	} else {
559	warn "FATAL: $filename~: $!\n";
560	}
561	} else {
562	unlink $filename;
563	unlink "$filename.pst";
564	}	1318	}
565	}	1319	}
566		1320
567	sub object_freezer_as_string {	1321	cf::attachable->attach (
568	my ($rdata, $objs) = @_;
569
570	use Data::Dumper;
571
572	$$rdata . Dumper $objs
573	}
574
575	sub object_thawer_load {
576	my ($filename) = @_;
577
578	local $/;
579
580	my $av;
581
582	#TODO: use sysread etc.
583	if (open my $data, "<:raw:perlio", $filename) {
584	$data = <$data>;
585	if (open my $pst, "<:raw:perlio", "$filename.pst") {
586	$av = eval { (Storable::thaw <$pst>)->{objs} };
587	}
588	return ($data, $av);
589	}
590
591	()
592	}
593
594	attach_to_objects
595	prio => -1000000,	1322	prio => -1000000,
		1323	on_instantiate => sub {
		1324	my ($obj, $data) = @_;
		1325
		1326	$data = decode_json $data;
		1327
		1328	for (@$data) {
		1329	my ($name, $args) = @$_;
		1330
		1331	$obj->attach ($name, %{$args || {} });
		1332	}
		1333	},
		1334	on_reattach => \&reattach,
596	on_clone => sub {	1335	on_clone => sub {
597	my ($src, $dst) = @_;	1336	my ($src, $dst) = @_;
598		1337
599	@{$dst->registry} = @{$src->registry};	1338	@{$dst->registry} = @{$src->registry};
600		1339
601	%$dst = %$src;	1340	%$dst = %$src;
602		1341
603	%{$dst->{_attachment}} = %{$src->{_attachment}}	1342	%{$dst->{_attachment}} = %{$src->{_attachment}}
604	if exists $src->{_attachment};	1343	if exists $src->{_attachment};
605	},	1344	},
606	;	1345	);
		1346
		1347	sub object_freezer_save {
		1348	my ($filename, $rdata, $objs) = @_;
		1349
		1350	sync_job {
		1351	if (length $$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
607		1433
608	#############################################################################	1434	#############################################################################
609	# command handling &c	1435	# command handling &c
610		1436
611	=item cf::register_command $name => \&callback($ob,$args);	1437	=item cf::register_command $name => \&callback($ob,$args)
612		1438
613	Register a callback for execution when the client sends the user command	1439	Register a callback for execution when the client sends the user command
614	$name.	1440	$name.
615		1441
616	=cut	1442	=cut
…		…
622	#warn "registering command '$name/$time' to '$caller'";	1448	#warn "registering command '$name/$time' to '$caller'";
623		1449
624	push @{ $COMMAND{$name} }, [$caller, $cb];	1450	push @{ $COMMAND{$name} }, [$caller, $cb];
625	}	1451	}
626		1452
627	=item cf::register_extcmd $name => \&callback($pl,$packet);	1453	=item cf::register_extcmd $name => \&callback($pl,@args)
628		1454
629	Register a callbackf ro execution when the client sends an extcmd packet.	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.
630		1460
631	If the callback returns something, it is sent back as if reply was being	1461	The values will be sent back to the client.
632	called.
633		1462
634	=cut	1463	=item cf::register_async_extcmd $name => \&callback($pl,$reply->(...),@args)
635		1464
		1465	Same as C<cf::register_extcmd>, but instead of returning values, the
		1466	callback needs to clal the C<$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
636	sub register_extcmd {	1485	sub register_extcmd($$) {
637	my ($name, $cb) = @_;	1486	my ($name, $cb) = @_;
638		1487
639	my $caller = caller;
640	#warn "registering extcmd '$name' to '$caller'";
641
642	$EXTCMD{$name} = [$cb, $caller];	1488	$EXTCMD{$name} = $cb;
643	}	1489	}
644		1490
645	attach_to_players	1491	sub register_async_extcmd($$) {
		1492	my ($name, $cb) = @_;
		1493
		1494	$EXTACMD{$name} = $cb;
		1495	}
		1496
		1497	sub register_exticmd($$) {
		1498	my ($name, $cb) = @_;
		1499
		1500	$EXTICMD{$name} = $cb;
		1501	}
		1502
		1503	sub register_async_exticmd($$) {
		1504	my ($name, $cb) = @_;
		1505
		1506	$EXTIACMD{$name} = $cb;
		1507	}
		1508
		1509	use File::Glob ();
		1510
		1511	cf::player->attach (
646	on_command => sub {	1512	on_unknown_command => sub {
647	my ($pl, $name, $params) = @_;	1513	my ($pl, $name, $params) = @_;
648		1514
649	my $cb = $COMMAND{$name}	1515	my $cb = $COMMAND{$name}
650	or return;	1516	or return;
651		1517
…		…
656	cf::override;	1522	cf::override;
657	},	1523	},
658	on_extcmd => sub {	1524	on_extcmd => sub {
659	my ($pl, $buf) = @_;	1525	my ($pl, $buf) = @_;
660		1526
661	my $msg = eval { from_json $buf };	1527	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
662		1528
663	if (ref $msg) {	1529	if (ref $msg) {
		1530	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		1531
664	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1532	if (my $cb = $EXTACMD{$type}) {
665	if (my %reply = $cb->[0]->($pl, $msg)) {	1533	$cb->(
666	$pl->ext_reply ($msg->{msgid}, %reply);	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 $active;
667	}	1666	}
668	}	1667	}
669	} else {
670	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
671	}
672		1668
673	cf::override;	1669	unless ($progress) {
674	},	1670	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
675	;
676		1671
677	sub register {	1672	while (my ($k, $v) = each %todo) {
678	my ($base, $pkg) = @_;	1673	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1674	if exists $v->{meta}{mandatory};
		1675	}
679		1676
680	#TODO	1677	last;
681	}
682
683	sub load_extension {
684	my ($path) = @_;
685
686	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
687	my $base = $1;
688	my $pkg = $1;
689	$pkg =~ s/[^[:word:]]/_/g;
690	$pkg = "ext::$pkg";
691
692	warn "loading '$path' into '$pkg'\n";
693
694	open my $fh, "<:utf8", $path
695	or die "$path: $!";
696
697	my $source =
698	"package $pkg; use strict; use utf8;\n"
699	. "#line 1 \"$path\"\n{\n"
700	. (do { local $/; <$fh> })
701	. "\n};\n1";
702
703	eval $source
704	or die $@ ? "$path: $@\n"
705	: "extension disabled.\n";
706
707	push @exts, $pkg;
708	$ext_pkg{$base} = $pkg;
709
710	# no strict 'refs';
711	# @{"$pkg\::ISA"} = ext::;
712
713	register $base, $pkg;
714	}
715
716	sub unload_extension {
717	my ($pkg) = @_;
718
719	warn "removing extension $pkg\n";
720
721	# remove hooks
722	#TODO
723	# for my $idx (0 .. $#PLUGIN_EVENT) {
724	# delete $hook[$idx]{$pkg};
725	# }
726
727	# remove commands
728	for my $name (keys %COMMAND) {
729	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
730
731	if (@cb) {
732	$COMMAND{$name} = \@cb;
733	} else {
734	delete $COMMAND{$name};
735	}
736	}
737
738	# remove extcmds
739	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
740	delete $EXTCMD{$name};
741	}
742
743	if (my $cb = $pkg->can ("unload")) {
744	eval {
745	$cb->($pkg);
746	1	1678	}
747	} or warn "$pkg unloaded, but with errors: $@";	1679	}
748	}	1680	};
749
750	Symbol::delete_package $pkg;
751	}
752
753	sub load_extensions {
754	for my $ext (<$LIBDIR/*.ext>) {
755	next unless -r $ext;
756	eval {
757	load_extension $ext;
758	1
759	} or warn "$ext not loaded: $@";
760	}
761	}	1681	}
762		1682
763	#############################################################################	1683	#############################################################################
764	# load/save/clean perl data associated with a map
765		1684
766	*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($) {
767	my ($map) = @_;	1739	my ($login) = @_;
768		1740
769	my $path = $map->tmpname;	1741	$cf::PLAYER{$login}
770	defined $path or return;	1742	or !aio_stat path $login
771
772	unlink "$path.pst";
773	};
774
775	attach_to_maps prio => -10000, package => cf::mapsupport::;
776
777	#############################################################################
778	# load/save perl data associated with player->ob objects
779
780	sub all_objects(@) {
781	@_, map all_objects ($_->inv), @_
782	}	1743	}
783		1744
784	# TODO: compatibility cruft, remove when no longer needed	1745	sub find($) {
785	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} = $pl
		1768	}
		1769	}
		1770	}
		1771
		1772	cf::player->attach (
786	on_load => sub {	1773	on_load => sub {
787	my ($pl, $path) = @_;	1774	my ($pl, $path) = @_;
788		1775
789	for my $o (all_objects $pl->ob) {	1776	# restore slots saved in save, below
790	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1777	my $slots = delete $pl->{_slots};
791	$o->set_ob_key_value ("_perl_data");
792		1778
793	%$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	}
794	}	2305	}
		2306
		2307	$f->resolve_delayed_derefs;
		2308	} else {
		2309	$self->post_load_original
		2310	if delete $self->{load_original};
795	}	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);
796	},	2332	}
797	;
798		2333
799	#############################################################################	2334	$self->post_load;
800		2335
801	=head2 CORE EXTENSIONS	2336	1
		2337	}
802		2338
803	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;
804		2633
805	=over 4	2634	=over 4
806		2635
807	=item cf::player::exists $login	2636	=item $ob->inv_recursive
808		2637
809	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.
810		2640
811	=cut	2641	=cut
812		2642
813	sub cf::player::exists($) {	2643	sub inv_recursive_;
814	cf::player::find $_[0]	2644	sub inv_recursive_ {
815	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2645	map { $_, inv_recursive_ $_->inv } @_
816	}	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
817		2687
818	=item $player_object->reply ($npc, $msg[, $flags])	2688	=item $player_object->reply ($npc, $msg[, $flags])
819		2689
820	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>
821	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
822	dialogue with the given NPC character.	2692	dialogue with the given NPC character.
823		2693
824	=cut	2694	=cut
825		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
826	# rough implementation of a future "reply" method that works	2710	# rough implementation of a future "reply" method that works
827	# with dialog boxes.	2711	# with dialog boxes.
		2712	#TODO: the first argument must go, split into a $npc->reply_to ( method
828	sub cf::object::player::reply($$$;$) {	2713	sub cf::object::player::reply($$$;$) {
829	my ($self, $npc, $msg, $flags) = @_;	2714	my ($self, $npc, $msg, $flags) = @_;
830		2715
831	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2716	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
832		2717
833	if ($self->{record_replies}) {	2718	if ($self->{record_replies}) {
834	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2719	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2720
835	} else {	2721	} else {
		2722	my $pl = $self->contr;
		2723
		2724	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2725	my $dialog = $pl->{npc_dialog};
		2726	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2727
		2728	} else {
836	$msg = $npc->name . " says: $msg" if $npc;	2729	$msg = $npc->name . " says: $msg" if $npc;
837	$self->message ($msg, $flags);	2730	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2731	}
838	}	2732	}
839	}	2733	}
840		2734
841	=item $player->ext_reply ($msgid, $msgtype, %msg)	2735	=item $object->send_msg ($channel, $msg, $color, [extra...])
842		2736
843	Sends an ext reply to the player.
844
845	=cut	2737	=cut
846		2738
847	sub cf::player::ext_reply($$$%) {	2739	sub cf::object::send_msg {
848	my ($self, $id, %msg) = @_;	2740	my $pl = shift->contr
849		2741	or return;
850	$msg{msgid} = $id;	2742	$pl->send_msg (@_);
851
852	$self->send ("ext " . to_json \%msg);
853	}	2743	}
854		2744
855	=item $player_object->may ("access")	2745	=item $player_object->may ("access")
856		2746
857	Returns wether the given player is authorized to access resource "access"	2747	Returns wether the given player is authorized to access resource "access"
…		…
866	(ref $cf::CFG{"may_$access"}	2756	(ref $cf::CFG{"may_$access"}
867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2757	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
868	: $cf::CFG{"may_$access"})	2758	: $cf::CFG{"may_$access"})
869	}	2759	}
870		2760
871	=cut	2761	=item $player_object->enter_link
872		2762
873	#############################################################################	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
874		3386
875	=head2 SAFE SCRIPTING	3387	=head2 SAFE SCRIPTING
876		3388
877	Functions that provide a safe environment to compile and execute	3389	Functions that provide a safe environment to compile and execute
878	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
…		…
885	our $safe = new Safe "safe";	3397	our $safe = new Safe "safe";
886	our $safe_hole = new Safe::Hole;	3398	our $safe_hole = new Safe::Hole;
887		3399
888	$SIG{FPE} = 'IGNORE';	3400	$SIG{FPE} = 'IGNORE';
889		3401
890	$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	));
891		3407
892	# here we export the classes and methods available to script code	3408	# here we export the classes and methods available to script code
893		3409
894	=pod	3410	=pod
895		3411
896	The following fucntions and emthods are available within a safe environment:	3412	The following functions and methods are available within a safe environment:
897		3413
898	cf::object contr pay_amount pay_player map	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
899	cf::object::player player	3419	cf::object::player
900	cf::player peaceful	3420	player
901	cf::map trigger	3421
		3422	cf::player
		3423	peaceful
		3424
		3425	cf::map
		3426	trigger
902		3427
903	=cut	3428	=cut
904		3429
905	for (	3430	for (
906	["cf::object" => qw(contr pay_amount pay_player map)],	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)],
907	["cf::object::player" => qw(player)],	3434	["cf::object::player" => qw(player)],
908	["cf::player" => qw(peaceful)],	3435	["cf::player" => qw(peaceful send_msg)],
909	["cf::map" => qw(trigger)],	3436	["cf::map" => qw(trigger)],
910	) {	3437	) {
911	no strict 'refs';
912	my ($pkg, @funs) = @$_;	3438	my ($pkg, @funs) = @$_;
913	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3439	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
914	for @funs;	3440	for @funs;
915	}	3441	}
916		3442
…		…
931		3457
932	my $qcode = $code;	3458	my $qcode = $code;
933	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3459	$qcode =~ s/"/‟/g; # not allowed in #line filenames
934	$qcode =~ s/\n/\\n/g;	3460	$qcode =~ s/\n/\\n/g;
935		3461
		3462	%vars = (_dummy => 0) unless %vars;
		3463
		3464	my @res;
936	local $_;	3465	local $_;
937	local @safe::cf::_safe_eval_args = values %vars;
938		3466
939	my $eval =	3467	my $eval =
940	"do {\n"	3468	"do {\n"
941	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3469	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
942	. "#line 0 \"{$qcode}\"\n"	3470	. "#line 0 \"{$qcode}\"\n"
943	. $code	3471	. $code
944	. "\n}"	3472	. "\n}"
945	;	3473	;
946		3474
		3475	if ($CFG{safe_eval}) {
947	sub_generation_inc;	3476	sub_generation_inc;
		3477	local @safe::cf::_safe_eval_args = values %vars;
948	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3478	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
949	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	}
950		3484
951	if ($@) {	3485	if ($@) {
952	warn "$@";	3486	warn "$@",
953	warn "while executing safe code '$code'\n";	3487	"while executing safe code '$code'\n",
954	warn "with arguments " . (join " ", %vars) . "\n";	3488	"with arguments " . (join " ", %vars) . "\n";
955	}	3489	}
956		3490
957	wantarray ? @res : $res[0]	3491	wantarray ? @res : $res[0]
958	}	3492	}
959		3493
…		…
973	=cut	3507	=cut
974		3508
975	sub register_script_function {	3509	sub register_script_function {
976	my ($fun, $cb) = @_;	3510	my ($fun, $cb) = @_;
977		3511
978	no strict 'refs';	3512	$fun = "safe::$fun" if $CFG{safe_eval};
979	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3513	*$fun = $safe_hole->wrap ($cb);
980	}	3514	}
981		3515
982	=back	3516	=back
983		3517
984	=cut	3518	=cut
985		3519
986	#############################################################################	3520	#############################################################################
		3521	# the server's init and main functions
987		3522
988	=head2 EXTENSION DATABASE SUPPORT	3523	our %FACEHASH; # hash => idx, #d# HACK for http server
989		3524
990	Crossfire maintains a very simple database for extension use. It can	3525	# internal api, not fianlised
991	currently store anything that can be serialised using Storable, which	3526	sub set_face {
992	excludes objects.	3527	my ($name, $type, $data) = @_;
993		3528
994	The parameter C<$family> should best start with the name of the extension	3529	my $idx = cf::face::find $name;
995	using it, it should be unique.
996		3530
997	=over 4	3531	if ($idx) {
		3532	delete $FACEHASH{cf::face::get_chksum $idx};
		3533	} else {
		3534	$idx = cf::face::alloc $name;
		3535	}
998		3536
999	=item $hashref = cf::db_get $family	3537	my $hash = cf::face::mangle_chksum Digest::MD5::md5 $data;
1000		3538
1001	Return a hashref for use by the extension C<$family>, which can be	3539	cf::face::set_type $idx, $type;
1002	modified. After modifications, you have to call C<cf::db_dirty> or	3540	cf::face::set_data $idx, 0, $data, $hash;
1003	C<cf::db_sync>.	3541	cf::face::set_meta $idx, $type & 1 ? undef : undef;
		3542	$FACEHASH{$hash} = $idx;#d#
1004		3543
1005	=item $value = cf::db_get $family => $key	3544	$idx
		3545	}
1006		3546
1007	Returns a single value from the database	3547	sub load_facedata($) {
		3548	my ($path) = @_;
1008		3549
1009	=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 = ();
1010		3553
1011	Stores the given family hashref into the database. Updates are delayed, if	3554	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1012	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1013		3555
1014	=item cf::db_put $family => $key => $value	3556	trace "loading facedata from $path\n";
1015		3557
1016	Stores the given C<$value> in the family hash. Updates are delayed, if you	3558	my $facedata = decode_storable load_file $path;
1017	want the data to be synced to disk immediately, use C<cf::db_sync>.
1018		3559
1019	=item cf::db_dirty	3560	$facedata->{version} == 2
		3561	or cf::cleanup "$path: version mismatch, cannot proceed.";
1020		3562
1021	Marks the database as dirty, to be updated at a later time.	3563	cf::cede_to_tick;
1022		3564
1023	=item cf::db_sync	3565	{
		3566	my $faces = delete $facedata->{faceinfo};
1024		3567
1025	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;
1026		3571
1027	=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	}
1028		3581
1029	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	}
1030		4252
1031	{	4253	{
1032	my $path = cf::localdir . "/database.pst";	4254	# configure BDB
		4255	info "initialising database";
1033		4256
1034	sub db_load() {	4257	BDB::min_parallel 16;
1035	warn "loading database $path\n";#d# remove later	4258	BDB::max_poll_reqs $TICK * 0.1;
1036	$DB = stat $path ? Storable::retrieve $path : { };	4259	#$AnyEvent::BDB::WATCHER->priority (1);
1037	}
1038		4260
1039	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);
1040		4268
1041	sub db_save() {	4269	cf::sync_job {
1042	warn "saving database $path\n";#d# remove later
1043	waitpid $pid, 0 if $pid;
1044	if (0 == ($pid = fork)) {
1045	$DB->{_meta}{version} = 1;
1046	Storable::nstore $DB, "$path~";
1047	rename "$path~", $path;
1048	cf::_exit 0 if defined $pid;
1049	}
1050	}
1051
1052	my $dirty;
1053
1054	sub db_sync() {
1055	db_save if $dirty;
1056	undef $dirty;
1057	}
1058
1059	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1060	db_sync;
1061	});
1062
1063	sub db_dirty() {
1064	$dirty = 1;
1065	$idle->start;
1066	}
1067
1068	sub db_get($;$) {
1069	@_ >= 2
1070	? $DB->{$_[0]}{$_[1]}
1071	: ($DB->{$_[0]} ||= { })
1072	}
1073
1074	sub db_put($$;$) {
1075	if (@_ >= 3) {
1076	$DB->{$_[0]}{$_[1]} = $_[2];
1077	} else {	4270	eval {
1078	$DB->{$_[0]} = $_[1];	4271	BDB::db_env_open
1079	}	4272	$DB_ENV,
1080	db_dirty;	4273	$BDBDIR,
1081	}	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;
1082		4277
1083	attach_global	4278	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1084	prio => 10000,
1085	on_cleanup => sub {
1086	db_sync;
1087	},
1088	;
1089	}
1090
1091	#############################################################################
1092	# the server's main()
1093
1094	sub cfg_load {
1095	open my $fh, "<:utf8", cf::confdir . "/config"
1096	or return;
1097
1098	local $/;
1099	*CFG = YAML::Syck::Load <$fh>;
1100	}
1101
1102	sub main {
1103	cfg_load;
1104	db_load;
1105	load_extensions;
1106	Event::loop;
1107	}
1108
1109	#############################################################################
1110	# initialisation
1111
1112	sub _perl_reload(&) {
1113	my ($msg) = @_;
1114
1115	$msg->("reloading...");
1116
1117	eval {
1118	# cancel all watchers
1119	for (Event::all_watchers) {
1120	$_->cancel if $_->data & WF_AUTOCANCEL;
1121	}
1122
1123	# unload all extensions
1124	for (@exts) {
1125	$msg->("unloading <$_>");
1126	unload_extension $_;
1127	}
1128
1129	# unload all modules loaded from $LIBDIR
1130	while (my ($k, $v) = each %INC) {
1131	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1132
1133	$msg->("removing <$k>");
1134	delete $INC{$k};
1135
1136	$k =~ s/\.pm$//;
1137	$k =~ s/\//::/g;
1138
1139	if (my $cb = $k->can ("unload_module")) {
1140	$cb->();
1141	}	4279	};
1142		4280
1143	Symbol::delete_package $k;	4281	cf::cleanup "db_env_open(db): $@" if $@;
1144	}	4282	};
		4283	}
1145		4284
1146	# sync database to disk	4285	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1147	cf::db_sync;	4286	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1148
1149	# get rid of safe::, as good as possible
1150	Symbol::delete_package "safe::$_"
1151	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1152
1153	# remove register_script_function callbacks
1154	# TODO
1155
1156	# unload cf.pm "a bit"
1157	delete $INC{"cf.pm"};
1158
1159	# don't, removes xs symbols, too,
1160	# and global variables created in xs
1161	#Symbol::delete_package __PACKAGE__;
1162
1163	# reload cf.pm
1164	$msg->("reloading cf.pm");
1165	require cf;
1166
1167	# load config and database again
1168	cf::cfg_load;
1169	cf::db_load;
1170
1171	# load extensions
1172	$msg->("load extensions");
1173	cf::load_extensions;
1174
1175	# reattach attachments to objects
1176	$msg->("reattach");
1177	_global_reattach;
1178	};	4287	};
1179	$msg->($@) if $@;	4288	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1180		4289	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1181	$msg->("reloaded");
1182	};
1183
1184	sub perl_reload() {
1185	_perl_reload {
1186	warn $_[0];
1187	print "$_[0]\n";
1188	};	4290	};
1189	}	4291	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4292	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4293	};
1190		4294
1191	register "<global>", __PACKAGE__;	4295	info "database initialised";
		4296	}
1192		4297
1193	register_command "perl-reload" => sub {	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 {
1194	my ($who, $arg) = @_;	4312	my ($msg, @addr) = @_;
1195		4313
1196	if ($who->flag (FLAG_WIZ)) {	4314	$msg =~ s/\n$//;
1197	_perl_reload {	4315
1198	warn $_[0];	4316	if ($_log_backtrace_last eq $msg) {
1199	$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;
1200	};	4348	};
1201	}	4349	} else {
1202	};	4350	LOG llevInfo, "[ABT] $msg\n";
1203		4351	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1204	unshift @INC, $LIBDIR;
1205
1206	$TICK_WATCHER = Event->timer (
1207	prio => 0,
1208	at => $NEXT_TICK || 1,
1209	data => WF_AUTOCANCEL,
1210	cb => sub {
1211	cf::server_tick; # one server iteration
1212
1213	my $NOW = Event::time;
1214	$NEXT_TICK += $TICK;
1215
1216	# if we are delayed by four ticks or more, skip them all
1217	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1218
1219	$TICK_WATCHER->at ($NEXT_TICK);
1220	$TICK_WATCHER->start;
1221	},	4352	}
1222	);	4353	}
1223		4354
1224	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;
1225		4358
1226	Event->io (fd => IO::AIO::poll_fileno,	4359	END { cf::emergency_save }
1227	poll => 'r',
1228	prio => 5,
1229	data => WF_AUTOCANCEL,
1230	cb => \&IO::AIO::poll_cb);
1231		4360
1232	1	4361	1
1233		4362

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