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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.48 by root, Sun Aug 27 15:24:22 2006 UTC vs.
Revision 1.624 by root, Sat Nov 17 23:40:02 2018 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2018 Marc Alexander Lehmann / the Deliantra team
		5	# Copyright (©) 2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		6	#
		7	# Deliantra is free software: you can redistribute it and/or modify it under
		8	# the terms of the Affero GNU General Public License as published by the
		9	# Free Software Foundation, either version 3 of the License, or (at your
		10	# option) any later version.
		11	#
		12	# This program is distributed in the hope that it will be useful,
		13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		15	# GNU General Public License for more details.
		16	#
		17	# You should have received a copy of the Affero GNU General Public License
		18	# and the GNU General Public License along with this program. If not, see
		19	# <http://www.gnu.org/licenses/>.
		20	#
		21	# The authors can be reached via e-mail to <support@deliantra.net>
		22	#
		23
1	package cf;	24	package cf;
		25
		26	use common::sense;
2		27
3	use Symbol;	28	use Symbol;
4	use List::Util;	29	use List::Util;
5	use Storable;	30	use Socket;
		31	use EV;
6	use Opcode;	32	use Opcode;
7	use Safe;	33	use Safe;
8	use Safe::Hole;	34	use Safe::Hole;
		35	use Storable ();
		36	use Carp ();
9		37
10	use Time::HiRes;
11	use Event;	38	use AnyEvent ();
12	$Event::Eval = 1; # no idea why this is required, but it is	39	use AnyEvent::IO ();
		40	use AnyEvent::DNS ();
13		41
14	use strict;	42	use Coro ();
		43	use Coro::State;
		44	use Coro::Handle;
		45	use Coro::EV;
		46	use Coro::AnyEvent;
		47	use Coro::Timer;
		48	use Coro::Signal;
		49	use Coro::Semaphore;
		50	use Coro::SemaphoreSet;
		51	use Coro::AnyEvent;
		52	use Coro::AIO;
		53	use Coro::BDB 1.6;
		54	use Coro::Storable;
		55	use Coro::Util ();
15		56
16	_reload_1;	57	use Guard ();
		58	use JSON::XS 2.01 ();
		59	use BDB ();
		60	use Data::Dumper;
		61	use Fcntl;
		62	use YAML::XS ();
		63	use CBOR::XS ();
		64	use IO::AIO ();
		65	use Compress::LZF;
		66	use Digest::MD5 ();
17		67
		68	AnyEvent::detect;
		69
		70	# configure various modules to our taste
		71	#
		72	$Storable::canonical = 1; # reduce rsync transfers
		73	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		74
		75	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		76
		77	# make sure c-lzf reinitialises itself
		78	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		79	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		80
		81	# strictly for debugging
		82	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		83
		84	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		85
		86	our @ORIG_INC;
		87
18	our %COMMAND = ();	88	our %COMMAND = ();
		89	our %COMMAND_TIME = ();
		90
		91	our @EXTS = (); # list of extension package names
		92	our %EXTCMD = ();
		93	our %EXTACMD = ();
		94	our %EXTICMD = ();
		95	our %EXTIACMD = ();
		96	our %EXT_CORO = (); # coroutines bound to extensions
		97	our %EXT_MAP = (); # pluggable maps
		98
		99	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	100	our @EVENT;
20	our %PROP_TYPE;	101	our @REFLECT; # set by XS
21	our %PROP_IDX;	102	our %REFLECT; # set by us
22	our $LIBDIR = maps_directory "perl";
23		103
24	our $TICK = MAX_TIME * 1e-6;	104	our $CONFDIR = confdir;
25	our $TICK_WATCHER;	105
		106	our $DATADIR = datadir;
		107	our $LIBDIR = "$DATADIR/ext";
		108	our $PODDIR = "$DATADIR/pod";
		109	our $MAPDIR = "$DATADIR/" . mapdir;
		110
		111	our $LOCALDIR = localdir;
		112	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		113	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		114	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		115	our $RANDOMDIR = "$LOCALDIR/random";
		116	our $BDBDIR = "$LOCALDIR/db";
		117	our $PIDFILE = "$LOCALDIR/pid";
		118	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		119
		120	#our %RESOURCE; # unused
		121
		122	our $OUTPUT_RATE_MIN = 3000;
		123	our $OUTPUT_RATE_MAX = 1000000;
		124
		125	our $MAX_LINKS = 32; # how many chained exits to follow
		126	our $VERBOSE_IO = 1;
		127
		128	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		129	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	130	our $NEXT_TICK;
		131	our $USE_FSYNC = 1; # use fsync to write maps - default on
27		132
28	BEGIN {	133	our $BDB_DEADLOCK_WATCHER;
29	*CORE::GLOBAL::warn = sub {	134	our $BDB_CHECKPOINT_WATCHER;
		135	our $BDB_TRICKLE_WATCHER;
		136	our $DB_ENV;
		137
		138	our @EXTRA_MODULES = qw(pod match mapscript incloader);
		139
		140	our %CFG;
		141	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
		142
		143	our $UPTIME; $UPTIME ||= time;
		144	our $RUNTIME = 0;
		145	our $SERVER_TICK = 0;
		146	our $NOW;
		147
		148	our (%PLAYER, %PLAYER_LOADING); # all users
		149	our (%MAP, %MAP_LOADING ); # all maps
		150	our $LINK_MAP; # the special {link} map, which is always available
		151
		152	# used to convert map paths into valid unix filenames by replacing / by ∕
		153	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		154
		155	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		156	our $LOADAVG; # same thing, but with alpha-smoothing
		157	our $JITTER; # average jitter
		158	our $TICK_START; # for load detecting purposes
		159
		160	our @POST_INIT;
		161
		162	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		163	our $REALLY_UNLOOP; # never set to true, please :)
		164
		165	our $WAIT_FOR_TICK = new Coro::Signal;
		166	our @WAIT_FOR_TICK_BEGIN;
		167
		168	binmode STDOUT;
		169	binmode STDERR;
		170
		171	# read virtual server time, if available
		172	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		173	open my $fh, "<", $RUNTIMEFILE
		174	or die "unable to read $RUNTIMEFILE file: $!";
		175	$RUNTIME = <$fh> + 0.;
		176	}
		177
		178	eval "sub TICK() { $TICK } 1" or die;
		179
		180	mkdir $_
		181	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		182
		183	our $EMERGENCY_POSITION;
		184
		185	sub cf::map::normalise;
		186
		187	sub in_main() {
		188	$Coro::current == $Coro::main
		189	}
		190
		191	#############################################################################
		192
		193	%REFLECT = ();
		194	for (@REFLECT) {
		195	my $reflect = JSON::XS::decode_json $_;
		196	$REFLECT{$reflect->{class}} = $reflect;
		197	}
		198
		199	# this is decidedly evil
		200	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		201
		202	#############################################################################
		203
		204	=head2 GLOBAL VARIABLES
		205
		206	=over 4
		207
		208	=item $cf::UPTIME
		209
		210	The timestamp of the server start (so not actually an "uptime").
		211
		212	=item $cf::SERVER_TICK
		213
		214	An unsigned integer that starts at zero when the server is started and is
		215	incremented on every tick.
		216
		217	=item $cf::NOW
		218
		219	The (real) time of the last (current) server tick - updated before and
		220	after tick processing, so this is useful only as a rough "what time is it
		221	now" estimate.
		222
		223	=item $cf::TICK
		224
		225	The interval between each server tick, in seconds.
		226
		227	=item $cf::RUNTIME
		228
		229	The time this server has run, starts at 0 and is increased by $cf::TICK on
		230	every server tick.
		231
		232	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		233	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		234	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		235
		236	Various directories - "/etc", read-only install directory, perl-library
		237	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		238	unique-items directory, player file directory, random maps directory and
		239	database environment.
		240
		241	=item $cf::LOADAVG
		242
		243	The current CPU load on the server (alpha-smoothed), as a value between 0
		244	(none) and 1 (overloaded), indicating how much time is spent on processing
		245	objects per tick. Healthy values are < 0.5.
		246
		247	=item $cf::LOAD
		248
		249	The raw value load value from the last tick.
		250
		251	=item %cf::CFG
		252
		253	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		254	from wherever your confdir points to.
		255
		256	=item cf::wait_for_tick, cf::wait_for_tick_begin
		257
		258	These are functions that inhibit the current coroutine one tick.
		259	cf::wait_for_tick_begin only returns directly I<after> the tick
		260	processing (and consequently, can only wake one thread per tick), while
		261	cf::wait_for_tick wakes up all waiters after tick processing.
		262
		263	Note that cf::wait_for_tick will immediately return when the server is not
		264	ticking, making it suitable for small pauses in threads that need to run
		265	when the server is paused. If that is not applicable (i.e. you I<really>
		266	want to wait, use C<$cf::WAIT_FOR_TICK>).
		267
		268	=item $cf::WAIT_FOR_TICK
		269
		270	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		271	variable contains a L<Coro::Signal> that is broadcats after every server
		272	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		273	next server tick.
		274
		275	=cut
		276
		277	sub wait_for_tick();
		278	sub wait_for_tick_begin();
		279
		280	=item @cf::INVOKE_RESULTS
		281
		282	This array contains the results of the last C<invoke ()> call. When
		283	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		284	that call.
		285
		286	=item %cf::REFLECT
		287
		288	Contains, for each (C++) class name, a hash reference with information
		289	about object members (methods, scalars, arrays and flags) and other
		290	metadata, which is useful for introspection.
		291
		292	=back
		293
		294	=cut
		295
		296	sub error(@) { LOG llevError, join "", @_ }
		297	sub warn (@) { LOG llevWarn , join "", @_ }
		298	sub info (@) { LOG llevInfo , join "", @_ }
		299	sub debug(@) { LOG llevDebug, join "", @_ }
		300	sub trace(@) { LOG llevTrace, join "", @_ }
		301
		302	$Coro::State::WARNHOOK = sub {
30	my $msg = join "", @_;	303	my $msg = join "", @_;
		304
31	$msg .= "\n"	305	$msg .= "\n"
32	unless $msg =~ /\n$/;	306	unless $msg =~ /\n$/;
33		307
34	print STDERR "cfperl: $msg";	308	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
35	LOG llevError, "cfperl: $msg";
36	};
37	}
38		309
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	310	LOG llevWarn, $msg;
		311	};
40		312
41	# generate property mutators	313	$Coro::State::DIEHOOK = sub {
42	sub prop_gen {	314	return unless $^S eq 0; # "eq", not "=="
43	my ($prefix, $class) = @_;
44		315
45	no strict 'refs';	316	error Carp::longmess $_[0];
46		317
47	for my $prop (keys %PROP_TYPE) {	318	if (in_main) {#d#
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	319	error "DIEHOOK called in main context, Coro bug?\n";#d#
49	my $sub = lc $1;	320	return;#d#
		321	}#d#
50		322
51	my $type = $PROP_TYPE{$prop};	323	# kill coroutine otherwise
52	my $idx = $PROP_IDX {$prop};	324	Coro::terminate
		325	};
53		326
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	327	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	328	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
56	};	329	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
57		330	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
58	*{"$class\::set_$sub"} = sub {	331	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
59	$_[0]->set_property ($type, $idx, $_[1]);	332	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	333	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		334
75	# we bless all objects into (empty) derived classes to force a method lookup	335	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	336	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	337	for my $pkg (qw(
78	no strict 'refs';	338	cf::global cf::attachable
		339	cf::object cf::object::player
		340	cf::client cf::player
		341	cf::arch cf::living
		342	cf::map cf::mapspace
		343	cf::party cf::region
		344	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	345	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	346	}
81		347
82	$Event::DIED = sub {	348	$EV::DIED = sub {
83	warn "error in event callback: @_";	349	warn "error in event callback: $@";
84	};	350	};
85		351
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	352	#############################################################################
93	# utility functions
94		353
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	354	sub fork_call(&@);
96		355	sub get_slot($;$$);
97	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101
102	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]
105	}
106		356
107	#############################################################################	357	#############################################################################
108	# "new" plug-in system
109		358
		359	=head2 UTILITY FUNCTIONS
		360
		361	=over 4
		362
		363	=item dumpval $ref
		364
		365	=cut
		366
		367	sub dumpval {
		368	eval {
		369	local $SIG{__DIE__};
		370	my $d;
		371	if (1) {
		372	$d = new Data::Dumper([$_[0]], ["*var"]);
		373	$d->Terse(1);
		374	$d->Indent(2);
		375	$d->Quotekeys(0);
		376	$d->Useqq(1);
		377	#$d->Bless(...);
		378	$d->Seen($_[1]) if @_ > 1;
		379	$d = $d->Dump();
		380	}
		381	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		382	$d
		383	} || "[unable to dump $_[0]: '$@']";
		384	}
		385
		386	=item $scalar = cf::load_file $path
		387
		388	Loads the given file from path and returns its contents. Croaks on error
		389	and can block.
		390
		391	=cut
		392
		393	sub load_file($) {
		394	0 <= aio_load $_[0], my $data
		395	or Carp::croak "$_[0]: $!";
		396
		397	$data
		398	}
		399
		400	=item $success = cf::replace_file $path, $data, $sync
		401
		402	Atomically replaces the file at the given $path with new $data, and
		403	optionally $sync the data to disk before replacing the file.
		404
		405	=cut
		406
		407	sub replace_file($$;$) {
		408	my ($path, $data, $sync) = @_;
		409
		410	my $lock = cf::lock_acquire ("replace_file:$path");
		411
		412	my $fh = aio_open "$path~", Fcntl::O_WRONLY | Fcntl::O_CREAT | Fcntl::O_TRUNC, 0644
		413	or return;
		414
		415	$data = $data->() if ref $data;
		416
		417	length $data == aio_write $fh, 0, (length $data), $data, 0
		418	or return;
		419
		420	!$sync
		421	or !aio_fsync $fh
		422	or return;
		423
		424	aio_close $fh
		425	and return;
		426
		427	aio_rename "$path~", $path
		428	and return;
		429
		430	if ($sync) {
		431	$path =~ s%/[^/]*$%%;
		432	aio_pathsync $path;
		433	}
		434
		435	1
		436	}
		437
		438	=item $ref = cf::decode_json $json
		439
		440	Converts a JSON string into the corresponding perl data structure.
		441
		442	=item $json = cf::encode_json $ref
		443
		444	Converts a perl data structure into its JSON representation.
		445
		446	=cut
		447
		448	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		449
		450	sub encode_json($) { $json_coder->encode ($_[0]) }
		451	sub decode_json($) { $json_coder->decode ($_[0]) }
		452
		453	=item $ref = cf::decode_storable $scalar
		454
		455	Same as Coro::Storable::thaw, so blocks.
		456
		457	=cut
		458
		459	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		460
		461	=item $ref = cf::decode_yaml $scalar
		462
		463	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		464
		465	=cut
		466
		467	sub decode_yaml($) {
		468	fork_call { YAML::XS::Load $_[0] } @_
		469	}
		470
		471	=item $scalar = cf::decode_cbor $scalar
		472
		473	Same as CBOR::XS::decode_cbor, but takes server ticks into account, so
		474	blocks. For small amounts of data, C<CBOR::XS::decode_cbor> is the better
		475	alternative.
		476
		477	=cut
		478
		479	sub decode_cbor($) {
		480	# we assume 10mb/s minimum decoding speed (on a ~2ghz machine)
		481	cf::get_slot +(length $_[0]) / 10_000_000, 0, "decode_cbor";
		482	CBOR::XS::decode_cbor $_[0]
		483	}
		484
		485	=item $scalar = cf::unlzf $scalar
		486
		487	Same as Compress::LZF::compress, but takes server ticks into account, so
		488	blocks.
		489
		490	=cut
		491
		492	sub unlzf($) {
		493	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		494	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		495	Compress::LZF::decompress $_[0]
		496	}
		497
		498	=item cf::post_init { BLOCK }
		499
		500	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		501	but I<before> the server starts ticking again.
		502
		503	The codeblock will have a single boolean argument to indicate whether this
		504	is a reload or not.
		505
		506	=cut
		507
		508	sub post_init(&) {
		509	push @POST_INIT, shift;
		510	}
		511
		512	sub _post_init {
		513	trace "running post_init jobs";
		514
		515	# run them in parallel...
		516
		517	my @join;
		518
		519	while () {
		520	push @join, map &Coro::async ($_, 0), @POST_INIT;
		521	@POST_INIT = ();
		522
		523	@join or last;
		524
		525	(pop @join)->join;
		526	}
		527	}
		528
		529	=item cf::lock_wait $string
		530
		531	Wait until the given lock is available. See cf::lock_acquire.
		532
		533	=item my $lock = cf::lock_acquire $string
		534
		535	Wait until the given lock is available and then acquires it and returns
		536	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		537	for example when the coroutine gets canceled), the lock is automatically
		538	returned.
		539
		540	Locks are *not* recursive, locking from the same coro twice results in a
		541	deadlocked coro.
		542
		543	Lock names should begin with a unique identifier (for example, cf::map::find
		544	uses map_find and cf::map::load uses map_load).
		545
		546	=item $locked = cf::lock_active $string
		547
		548	Return true if the lock is currently active, i.e. somebody has locked it.
		549
		550	=cut
		551
		552	our $LOCKS = new Coro::SemaphoreSet;
		553
		554	sub lock_wait($) {
		555	$LOCKS->wait ($_[0]);
		556	}
		557
		558	sub lock_acquire($) {
		559	$LOCKS->guard ($_[0])
		560	}
		561
		562	sub lock_active($) {
		563	$LOCKS->count ($_[0]) < 1
		564	}
		565
		566	sub freeze_mainloop {
		567	tick_inhibit_inc;
		568
		569	&Guard::guard (\&tick_inhibit_dec);
		570	}
		571
		572	=item cf::periodic $interval, $cb
		573
		574	Like EV::periodic, but randomly selects a starting point so that the actions
		575	get spread over time.
		576
		577	=cut
		578
		579	sub periodic($$) {
		580	my ($interval, $cb) = @_;
		581
		582	my $start = rand List::Util::min 180, $interval;
		583
		584	EV::periodic $start, $interval, 0, $cb
		585	}
		586
		587	=item cf::get_slot $time[, $priority[, $name]]
		588
		589	Allocate $time seconds of blocking CPU time at priority C<$priority>
		590	(default: 0): This call blocks and returns only when you have at least
		591	C<$time> seconds of cpu time till the next tick. The slot is only valid
		592	till the next cede.
		593
		594	Background jobs should use a priority less than zero, interactive jobs
		595	should use 100 or more.
		596
		597	The optional C<$name> can be used to identify the job to run. It might be
		598	used for statistical purposes and should identify the same time-class.
		599
		600	Useful for short background jobs.
		601
		602	=cut
		603
		604	our @SLOT_QUEUE;
		605	our $SLOT_QUEUE;
		606	our $SLOT_DECAY = 0.9;
		607
		608	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		609	$SLOT_QUEUE = Coro::async {
		610	$Coro::current->desc ("timeslot manager");
		611
		612	my $signal = new Coro::Signal;
		613	my $busy;
		614
		615	while () {
		616	next_job:
		617
		618	Coro::cede;
		619
		620	my $avail = cf::till_tick;
		621
		622	for (0 .. $#SLOT_QUEUE) {
		623	if ($SLOT_QUEUE[$_][0] <= $avail) {
		624	$busy = 0;
		625	my $job = splice @SLOT_QUEUE, $_, 1, ();
		626	$job->[2]->send;
		627	goto next_job;
		628	} else {
		629	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		630	}
		631	}
		632
		633	if (@SLOT_QUEUE) {
		634	wait_for_tick;
		635	} else {
		636	$busy = 0;
		637	Coro::schedule;
		638	}
		639	}
		640	};
		641
		642	sub get_slot($;$$) {
		643	return if tick_inhibit || $Coro::current == $Coro::main;
		644
		645	my ($time, $pri, $name) = @_;
		646
		647	$time = clamp $time, 0.01, $TICK * .6;
		648
		649	my $sig = new Coro::Signal;
		650
		651	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		652	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		653	$SLOT_QUEUE->ready;
		654	$sig->wait;
		655	}
		656
		657	=item cf::async { BLOCK }
		658
		659	Currently the same as Coro::async_pool, meaning you cannot use
		660	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		661	thing you are allowed to do is call C<prio> on it.
		662
		663	=cut
		664
		665	BEGIN { *async = \&Coro::async_pool }
		666
		667	=item cf::sync_job { BLOCK }
		668
		669	The design of Deliantra requires that the main coroutine ($Coro::main)
		670	is always able to handle events or is runnable, as Deliantra is only
		671	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		672	acceptable.
		673
		674	If it must be done, put the blocking parts into C<sync_job>. This will run
		675	the given BLOCK in another coroutine while waiting for the result. The
		676	server will be frozen during this time, so the block should either finish
		677	fast or be very important.
		678
		679	=cut
		680
		681	sub sync_job(&) {
		682	my ($job) = @_;
		683
		684	if (in_main) {
		685	my $time = AE::time;
		686
		687	# this is the main coro, too bad, we have to block
		688	# till the operation succeeds, freezing the server :/
		689
		690	#LOG llevError, Carp::longmess "sync job";#d#
		691
		692	my $freeze_guard = freeze_mainloop;
		693
		694	my $busy = 1;
		695	my @res;
		696
		697	(async {
		698	$Coro::current->desc ("sync job coro");
		699	@res = eval { $job->() };
		700	error $@ if $@;
		701	undef $busy;
		702	})->prio (Coro::PRIO_MAX);
		703
		704	while ($busy) {
		705	if (Coro::nready) {
		706	Coro::cede_notself;
		707	} else {
		708	EV::run EV::RUN_ONCE;
		709	}
		710	}
		711
		712	my $time = AE::time - $time;
		713
		714	$TICK_START += $time; # do not account sync jobs to server load
		715
		716	wantarray ? @res : $res[0]
		717	} else {
		718	# we are in another coroutine, how wonderful, everything just works
		719
		720	$job->()
		721	}
		722	}
		723
		724	=item $coro = cf::async_ext { BLOCK }
		725
		726	Like async, but this coro is automatically being canceled when the
		727	extension calling this is being unloaded.
		728
		729	=cut
		730
		731	sub async_ext(&) {
		732	my $cb = shift;
		733
		734	my $coro = &Coro::async ($cb);
		735
		736	$coro->on_destroy (sub {
		737	delete $EXT_CORO{$coro+0};
		738	});
		739	$EXT_CORO{$coro+0} = $coro;
		740
		741	$coro
		742	}
		743
		744	=item fork_call { }, @args
		745
		746	Executes the given code block with the given arguments in a seperate
		747	process, returning the results. Everything must be serialisable with
		748	Coro::Storable. May, of course, block. Note that the executed sub may
		749	never block itself or use any form of event handling.
		750
		751	=cut
		752
		753	sub post_fork {
		754	reset_signals;
		755	}
		756
		757	sub fork_call(&@) {
		758	my ($cb, @args) = @_;
		759
		760	my @res = Coro::Util::fork_eval {
		761	cf::post_fork;
		762	&$cb
		763	} @args;
		764
		765	wantarray ? @res : $res[-1]
		766	}
		767
		768	sub objinfo {
		769	(
		770	"counter value" => cf::object::object_count,
		771	"objects created" => cf::object::create_count,
		772	"objects destroyed" => cf::object::destroy_count,
		773	"freelist size" => cf::object::free_count,
		774	"allocated objects" => cf::object::objects_size,
		775	"active objects" => cf::object::actives_size,
		776	)
		777	}
		778
		779	=item $coin = coin_from_name $name
		780
		781	=cut
		782
		783	our %coin_alias = (
		784	"silver" => "silvercoin",
		785	"silvercoin" => "silvercoin",
		786	"silvercoins" => "silvercoin",
		787	"gold" => "goldcoin",
		788	"goldcoin" => "goldcoin",
		789	"goldcoins" => "goldcoin",
		790	"platinum" => "platinacoin",
		791	"platinumcoin" => "platinacoin",
		792	"platinumcoins" => "platinacoin",
		793	"platina" => "platinacoin",
		794	"platinacoin" => "platinacoin",
		795	"platinacoins" => "platinacoin",
		796	"royalty" => "royalty",
		797	"royalties" => "royalty",
		798	);
		799
		800	sub coin_from_name($) {
		801	$coin_alias{$_[0]}
		802	? cf::arch::find $coin_alias{$_[0]}
		803	: undef
		804	}
		805
		806	=item $value = cf::db_get $family => $key
		807
		808	Returns a single value from the environment database.
		809
		810	=item cf::db_put $family => $key => $value
		811
		812	Stores the given C<$value> in the family. It can currently store binary
		813	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		814
		815	=item $db = cf::db_table "name"
		816
		817	Create and/or open a new database table. The string must not be "db" and must be unique
		818	within each server.
		819
		820	=cut
		821
		822	sub db_table($) {
		823	cf::error "db_get called from main context"
		824	if $Coro::current == $Coro::main;
		825
		826	my ($name) = @_;
		827	my $db = BDB::db_create $DB_ENV;
		828
		829	eval {
		830	$db->set_flags (BDB::CHKSUM);
		831
		832	utf8::encode $name;
		833	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		834	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		835	cf::cleanup "db_open(db): $!" if $!;
		836	};
		837	cf::cleanup "db_open(db): $@" if $@;
		838
		839	$db
		840	}
		841
		842	our $DB;
		843
		844	sub db_init {
		845	$DB ||= db_table "db";
		846	}
		847
		848	sub db_get($$) {
		849	my $key = "$_[0]/$_[1]";
		850
		851	cf::error "db_get called from main context"
		852	if $Coro::current == $Coro::main;
		853
		854	BDB::db_get $DB, undef, $key, my $data;
		855
		856	$! ? ()
		857	: $data
		858	}
		859
		860	sub db_put($$$) {
		861	BDB::dbreq_pri 4;
		862	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		863	}
		864
		865	=item cf::cache $id => [$paths...], $processversion => $process
		866
		867	Generic caching function that returns the value of the resource $id,
		868	caching and regenerating as required.
		869
		870	This function can block.
		871
		872	=cut
		873
		874	sub cache {
		875	my ($id, $src, $processversion, $process) = @_;
		876
		877	my $meta =
		878	join "\x00",
		879	$processversion,
		880	map {
		881	aio_stat $_
		882	and Carp::croak "$_: $!";
		883
		884	($_, (stat _)[7,9])
		885	} @$src;
		886
		887	my $dbmeta = db_get cache => "$id/meta";
		888	if ($dbmeta ne $meta) {
		889	# changed, we may need to process
		890
		891	my @data;
		892	my $md5;
		893
		894	for (0 .. $#$src) {
		895	$data[$_] = load_file $src->[$_];
		896	}
		897
		898	# if processing is expensive, check
		899	# checksum first
		900	if (1) {
		901	$md5 =
		902	join "\x00",
		903	$processversion,
		904	map {
		905	cf::cede_to_tick;
		906	($src->[$_], Digest::MD5::md5_hex $data[$_])
		907	} 0.. $#$src;
		908
		909
		910	my $dbmd5 = db_get cache => "$id/md5";
		911	if ($dbmd5 eq $md5) {
		912	db_put cache => "$id/meta", $meta;
		913
		914	return db_get cache => "$id/data";
		915	}
		916	}
		917
		918	my $t1 = EV::time;
		919	my $data = $process->(\@data);
		920	my $t2 = EV::time;
		921
		922	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		923
		924	db_put cache => "$id/data", $data;
		925	db_put cache => "$id/md5" , $md5;
		926	db_put cache => "$id/meta", $meta;
		927
		928	return $data;
		929	}
		930
		931	db_get cache => "$id/data"
		932	}
		933
		934	=item cf::datalog type => key => value, ...
		935
		936	Log a datalog packet of the given type with the given key-value pairs.
		937
		938	=cut
		939
		940	sub datalog($@) {
		941	my ($type, %kv) = @_;
		942	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		943	}
		944
		945	=back
		946
		947	=cut
		948
		949	#############################################################################
		950
		951	=head2 ATTACHABLE OBJECTS
		952
		953	Many objects in deliantra are so-called attachable objects. That means you can
		954	attach callbacks/event handlers (a collection of which is called an "attachment")
		955	to it. All such attachable objects support the following methods.
		956
		957	In the following description, CLASS can be any of C<global>, C<object>
		958	C<player>, C<client> or C<map> (i.e. the attachable objects in
		959	Deliantra).
		960
		961	=over 4
		962
110	=item $object->attach ($attachment, key => $value...)	963	=item $attachable->attach ($attachment, key => $value...)
111		964
112	Attach a pre-registered attachment to an object.	965	=item $attachable->detach ($attachment)
113		966
114	=item $player->attach ($attachment, key => $value...)	967	Attach/detach a pre-registered attachment to a specific object and give it
		968	the specified key/value pairs as arguments.
115		969
116	Attach a pre-registered attachment to a player.	970	Example, attach a minesweeper attachment to the given object, making it a
		971	10x10 minesweeper game:
117		972
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	973	$obj->attach (minesweeper => width => 10, height => 10);
119		974
120	Attach a pre-registered attachment to a map.	975	=item $bool = $attachable->attached ($name)
121		976
122	=item cf::attach_global ...	977	Checks wether the named attachment is currently attached to the object.
123		978
124	Attach handlers for global events.	979	=item cf::CLASS->attach ...
125		980
126	This and all following C<attach_*>-functions expect any number of the	981	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	982
		983	Define an anonymous attachment and attach it to all objects of the given
		984	CLASS. See the next function for an explanation of its arguments.
		985
		986	You can attach to global events by using the C<cf::global> class.
		987
		988	Example, log all player logins:
		989
		990	cf::player->attach (
		991	on_login => sub {
		992	my ($pl) = @_;
		993	...
		994	},
		995	);
		996
		997	Example, attach to the jeweler skill:
		998
		999	cf::object->attach (
		1000	type => cf::SKILL,
		1001	subtype => cf::SK_JEWELER,
		1002	on_use_skill => sub {
		1003	my ($sk, $ob, $part, $dir, $msg) = @_;
		1004	...
		1005	},
		1006	);
		1007
		1008	=item cf::CLASS::attachment $name, ...
		1009
		1010	Register an attachment by C<$name> through which attachable objects of the
		1011	given CLASS can refer to this attachment.
		1012
		1013	Some classes such as deliantra maps and objects can specify attachments
		1014	that are attached at load/instantiate time, thus the need for a name.
		1015
		1016	These calls expect any number of the following handler/hook descriptions:
128		1017
129	=over 4	1018	=over 4
130		1019
131	=item prio => $number	1020	=item prio => $number
132		1021
…		…
134	by another C<prio> setting). Lower priority handlers get executed	1023	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	1024	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	1025	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	1026	unless you know what you are doing.
138		1027
		1028	=item type => $type
		1029
		1030	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		1031	given type of objects only (the additional parameter C<subtype> can be
		1032	used to further limit to the given subtype).
		1033
139	=item on_I<event> => \&cb	1034	=item on_I<event> => \&cb
140		1035
141	Call the given code reference whenever the named event happens (event is	1036	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	1037	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	1038	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	1047	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	1048	object/class are recognised.
154		1049
155	=back	1050	=back
156		1051
157	=item cf::attach_to_type $object_type, $subtype, ...	1052	Example, define an attachment called "sockpuppet" that calls the given
		1053	event handler when a monster attacks:
158		1054
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	1055	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	1056	on_skill_attack => sub {
161	type.	1057	my ($self, $victim) = @_;
		1058	...
		1059	}
		1060	}
162		1061
163	=item cf::attach_to_objects ...	1062	=item $attachable->valid
164		1063
165	Attach handlers to all objects. Do not use this except for debugging or	1064	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	1065	C-level object still exists. If you try to access an object that has no
167	the game.	1066	valid C counterpart anymore you get an exception at runtime. This method
168		1067	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	1068	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		1069
179	=cut	1070	=cut
180		1071
181	# the following variables are defined in .xs and must not be re-created	1072	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	1073	our @CB_GLOBAL = (); # registry for all global events
		1074	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	1075	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	1076	our @CB_PLAYER = ();
		1077	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	1078	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	1079	our @CB_MAP = ();
187		1080
188	my %attachment;	1081	my %attachment;
189		1082
		1083	sub cf::attachable::thawer_merge {
		1084	# simply override everything except _meta
		1085	local $_[0]{_meta};
		1086	%{$_[0]} = %{$_[1]};
		1087	}
		1088
190	sub _attach_cb($\%$$$) {	1089	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	1090	my ($registry, $event, $prio, $cb) = @_;
192		1091
193	use sort 'stable';	1092	use sort 'stable';
194		1093
195	$cb = [$prio, $cb];	1094	$cb = [$prio, $cb];
196		1095
197	@{$registry->[$event]} = sort	1096	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	1097	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	1098	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	1099	}
		1100
		1101	# hack
		1102	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		1103
204	# attach handles attaching event callbacks	1104	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	1105	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	1106	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	1107	sub _attach {
208	my ($registry, $klass, @arg) = @_;	1108	my ($registry, $klass, @arg) = @_;
209		1109
		1110	my $object_type;
210	my $prio = 0;	1111	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	1112	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1113
		1114	#TODO: get rid of this hack
		1115	if ($attachable_klass{$klass}) {
		1116	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1117	}
218		1118
219	while (@arg) {	1119	while (@arg) {
220	my $type = shift @arg;	1120	my $type = shift @arg;
221		1121
222	if ($type eq "prio") {	1122	if ($type eq "prio") {
223	$prio = shift @arg;	1123	$prio = shift @arg;
224		1124
		1125	} elsif ($type eq "type") {
		1126	$object_type = shift @arg;
		1127	$registry = $CB_TYPE[$object_type] ||= [];
		1128
		1129	} elsif ($type eq "subtype") {
		1130	defined $object_type or Carp::croak "subtype specified without type";
		1131	my $object_subtype = shift @arg;
		1132	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1133
225	} elsif ($type eq "package") {	1134	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	1135	my $pkg = shift @arg;
227		1136
228	while (my ($name, $id) = each %cb_id) {	1137	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	1138	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	1139	_attach_cb $registry, $id, $prio, $cb;
231	}	1140	}
232	}	1141	}
233		1142
234	} elsif (exists $cb_id{$type}) {	1143	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	1144	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		1145
237	} elsif (ref $type) {	1146	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	1147	error "attaching objects not supported, ignoring.\n";
239		1148
240	} else {	1149	} else {
241	shift @arg;	1150	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	1151	error "attach argument '$type' not supported, ignoring.\n";
243	}	1152	}
244	}	1153	}
245
246	\%undo
247	}	1154	}
248		1155
249	sub _attach_attachment {	1156	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	1157	my ($obj, $name, %arg) = @_;
251		1158
252	my $res;	1159	return if exists $obj->{_attachment}{$name};
253		1160
254	if (my $attach = $attachment{$name}) {	1161	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	1162	my $registry = $obj->registry;
256		1163
257	for (@$attach) {	1164	for (@$attach) {
258	my ($klass, @attach) = @$_;	1165	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	1166	_attach $registry, $klass, @attach;
260	}	1167	}
261		1168
262	$obj->{$name} = \%arg;	1169	$obj->{$name} = \%arg;
263	} else {	1170	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	1171	info "object uses attachment '$name' which is not available, postponing.\n";
265	}	1172	}
266		1173
267	push @{$obj->{_attachment}}, $name;	1174	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	1175	}
272		1176
273	sub cf::object::attach {	1177	sub cf::attachable::attach {
		1178	if (ref $_[0]) {
		1179	_object_attach @_;
		1180	} else {
		1181	_attach shift->_attach_registry, @_;
		1182	}
		1183	_recalc_want;
		1184	};
		1185
		1186	# all those should be optimised
		1187	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	1188	my ($obj, $name) = @_;
275		1189
276	_attach_attachment $obj, $name, %arg;	1190	if (ref $obj) {
277	}	1191	delete $obj->{_attachment}{$name};
		1192	reattach ($obj);
		1193	} else {
		1194	Carp::croak "cannot, currently, detach class attachments";
		1195	}
		1196	_recalc_want;
		1197	};
278		1198
279	sub cf::player::attach {	1199	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	1200	my ($obj, $name) = @_;
281		1201
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	1202	exists $obj->{_attachment}{$name}
283	}	1203	}
284		1204
285	sub cf::map::attach {	1205	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	1206	eval "#line " . __LINE__ . " 'cf.pm'
		1207	sub cf::\L$klass\E::_attach_registry {
		1208	(\\\@CB_$klass, KLASS_$klass)
		1209	}
287		1210
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	1211	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	1212	my \$name = shift;
316		1213
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	1214	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1215	}
		1216	";
		1217	die if $@;
318	}	1218	}
319		1219
320	our $override;	1220	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1221	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		1222
323	sub override {	1223	sub override {
324	$override = 1;	1224	$override = 1;
325	@invoke_results = ();	1225	@INVOKE_RESULTS = (@_);
326	}	1226	}
327		1227
328	sub do_invoke {	1228	sub do_invoke {
329	my $event = shift;	1229	my $event = shift;
330	my $callbacks = shift;	1230	my $callbacks = shift;
331		1231
332	@invoke_results = ();	1232	@INVOKE_RESULTS = ();
333		1233
334	local $override;	1234	local $override;
335		1235
336	for (@$callbacks) {	1236	for (@$callbacks) {
337	eval { &{$_->[1]} };	1237	eval { &{$_->[1]} };
338		1238
339	if ($@) {	1239	if ($@) {
340	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	1240	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	1241	override;
343	}	1242	}
344		1243
345	return 1 if $override;	1244	return 1 if $override;
346	}	1245	}
347		1246
348	0	1247	0
349	}	1248	}
		1249
		1250	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1251
		1252	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1253
		1254	Generate an object-specific event with the given arguments.
		1255
		1256	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1257	removed in future versions), and there is no public API to access override
		1258	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1259
		1260	=back
		1261
		1262	=cut
350		1263
351	#############################################################################	1264	#############################################################################
352	# object support	1265	# object support
353		1266
354	sub instantiate {	1267	sub _object_equal($$);
		1268	sub _object_equal($$) {
		1269	my ($a, $b) = @_;
		1270
		1271	return 0 unless (ref $a) eq (ref $b);
		1272
		1273	if ("HASH" eq ref $a) {
		1274	my @ka = keys %$a;
		1275	my @kb = keys %$b;
		1276
		1277	return 0 if @ka != @kb;
		1278
		1279	for (0 .. $#ka) {
		1280	return 0 unless $ka[$_] eq $kb[$_];
		1281	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1282	}
		1283
		1284	} elsif ("ARRAY" eq ref $a) {
		1285
		1286	return 0 if @$a != @$b;
		1287
		1288	for (0 .. $#$a) {
		1289	return 0 unless _object_equal $a->[$_], $b->[$_];
		1290	}
		1291
		1292	} elsif ($a ne $b) {
		1293	return 0;
		1294	}
		1295
		1296	1
		1297	}
		1298
		1299	our $SLOW_MERGES;#d#
		1300	sub _can_merge {
355	my ($obj, $data) = @_;	1301	my ($ob1, $ob2) = @_;
356		1302
357	$data = from_json $data;	1303	++$SLOW_MERGES;#d#
358		1304
359	for (@$data) {	1305	# we do the slow way here
360	my ($name, $args) = @$_;	1306	return _object_equal $ob1, $ob2
361	attach $obj, $name, %{$args || {} };
362	}
363	}	1307	}
364		1308
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	1309	sub reattach {
		1310	# basically do the same as instantiate, without calling instantiate
367	my ($obj) = @_;	1311	my ($obj) = @_;
		1312
		1313	# no longer needed after getting rid of delete_package?
		1314	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1315
368	my $registry = $obj->registry;	1316	my $registry = $obj->registry;
369		1317
370	@$registry = ();	1318	@$registry = ();
371		1319
		1320	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		1321
372	for my $name (@{ $obj->{_attachment} }) {	1322	for my $name (keys %{ $obj->{_attachment} || {} }) {
373	if (my $attach = $attachment{$name}) {	1323	if (my $attach = $attachment{$name}) {
374	for (@$attach) {	1324	for (@$attach) {
375	my ($klass, @attach) = @$_;	1325	my ($klass, @attach) = @$_;
376	_attach @$registry, $klass, @attach;	1326	_attach $registry, $klass, @attach;
377	}	1327	}
378	} else {	1328	} else {
379	warn "object uses attachment '$name' that is not available, postponing.\n";	1329	info "object uses attachment '$name' that is not available, postponing.\n";
380	}	1330	}
		1331	}
		1332	}
		1333
		1334	cf::attachable->attach (
		1335	prio => -1000000,
		1336	on_instantiate => sub {
		1337	my ($obj, $data) = @_;
		1338
		1339	$data = decode_json $data;
		1340
		1341	for (@$data) {
		1342	my ($name, $args) = @$_;
		1343
		1344	$obj->attach ($name, %{$args || {} });
		1345	}
381	}	1346	},
382	}	1347	on_reattach => \&reattach,
		1348	on_clone => sub {
		1349	my ($src, $dst) = @_;
		1350
		1351	@{$dst->registry} = @{$src->registry};
		1352
		1353	%$dst = %$src;
		1354
		1355	%{$dst->{_attachment}} = %{$src->{_attachment}}
		1356	if exists $src->{_attachment};
		1357	},
		1358	);
383		1359
384	sub object_freezer_save {	1360	sub object_freezer_save {
385	my ($filename, $objs) = @_;	1361	my ($filename, $rdata, $objs) = @_;
386		1362
387	$filename .= ".pst";	1363	sync_job {
		1364	if (length $$rdata) {
		1365	utf8::decode (my $decname = $filename);
		1366	trace sprintf "saving %s (%d,%d)\n",
		1367	$decname, length $$rdata, scalar @$objs
		1368	if $VERBOSE_IO;
388		1369
389	if (@$objs) {	1370	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";
391	chmod $fh, SAVE_MODE;	1371	aio_chmod $fh, SAVE_MODE;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1372	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1373	if ($cf::USE_FSYNC) {
		1374	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1375	aio_fsync $fh;
		1376	}
393	close $fh;	1377	aio_close $fh;
		1378
		1379	if (@$objs) {
		1380	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1381	aio_chmod $fh, SAVE_MODE;
		1382	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1383	aio_write $fh, 0, (length $data), $data, 0;
		1384	if ($cf::USE_FSYNC) {
		1385	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1386	aio_fsync $fh;
		1387	}
		1388	aio_close $fh;
		1389	aio_rename "$filename.pst~", "$filename.pst";
		1390	}
		1391	} else {
		1392	aio_unlink "$filename.pst";
		1393	}
		1394
394	rename "$filename~", $filename;	1395	aio_rename "$filename~", $filename;
		1396
		1397	$filename =~ s%/[^/]+$%%;
		1398	aio_pathsync $filename if $cf::USE_FSYNC;
		1399	} else {
		1400	error "unable to save objects: $filename~: $!\n";
		1401	}
395	} else {	1402	} else {
396	unlink $filename;	1403	aio_unlink $filename;
		1404	aio_unlink "$filename.pst";
		1405	}
397	}	1406	};
		1407	}
		1408
		1409	sub object_freezer_as_string {
		1410	my ($rdata, $objs) = @_;
		1411
		1412	use Data::Dumper;
		1413
		1414	$$rdata . Dumper $objs
398	}	1415	}
399		1416
400	sub object_thawer_load {	1417	sub object_thawer_load {
401	my ($filename) = @_;	1418	my ($filename) = @_;
402		1419
403	open my $fh, "<:raw:perlio", "$filename.pst"	1420	my ($data, $av);
		1421
		1422	(aio_load $filename, $data) >= 0
404	or return;	1423	or return;
405		1424
406	eval { local $/; (Storable::thaw <$fh>)->{objs} }	1425	unless (aio_stat "$filename.pst") {
407	}	1426	(aio_load "$filename.pst", $av) >= 0
		1427	or return;
408		1428
409	attach_to_objects	1429	my $st = eval { Coro::Storable::thaw $av };
410	prio => -1000000,	1430	$av = $st->{objs};
411	on_clone => sub {
412	my ($src, $dst) = @_;
413
414	@{$dst->registry} = @{$src->registry};
415
416	%$dst = %$src;
417
418	$dst->{_attachment} = [@{ $src->{_attachment} }]
419	if exists $src->{_attachment};
420	},	1431	}
421	;	1432
		1433	utf8::decode (my $decname = $filename);
		1434	trace sprintf "loading %s (%d,%d)\n",
		1435	$decname, length $data, scalar @{$av || []}
		1436	if $VERBOSE_IO;
		1437
		1438	($data, $av)
		1439	}
		1440
		1441	=head2 COMMAND CALLBACKS
		1442
		1443	=over 4
		1444
		1445	=cut
422		1446
423	#############################################################################	1447	#############################################################################
424	# old plug-in events	1448	# command handling &c
425		1449
426	sub inject_event {	1450	=item cf::register_command $name => \&callback($ob,$args)
427	my $extension = shift;
428	my $event_code = shift;
429		1451
430	my $cb = $hook[$event_code]{$extension}	1452	Register a callback for execution when the client sends the user command
431	or return;	1453	$name.
432		1454
433	&$cb	1455	=cut
434	}
435
436	sub inject_global_event {
437	my $event = shift;
438
439	my $cb = $hook[$event]
440	or return;
441
442	List::Util::max map &$_, values %$cb
443	}
444
445	sub inject_command {
446	my ($name, $obj, $params) = @_;
447
448	for my $cmd (@{ $command{$name} }) {
449	$cmd->[1]->($obj, $params);
450	}
451
452	-1
453	}
454		1456
455	sub register_command {	1457	sub register_command {
456	my ($name, $time, $cb) = @_;	1458	my ($name, $cb) = @_;
457		1459
458	my $caller = caller;	1460	my $caller = caller;
459	#warn "registering command '$name/$time' to '$caller'";	1461	#warn "registering command '$name/$time' to '$caller'";
460		1462
461	push @{ $command{$name} }, [$time, $cb, $caller];	1463	push @{ $COMMAND{$name} }, [$caller, $cb];
462	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
463	}	1464	}
464		1465
		1466	=item cf::register_extcmd $name => \&callback($pl,@args)
		1467
		1468	Register a callback for execution when the client sends an (synchronous)
		1469	extcmd packet. Ext commands will be processed in the order they are
		1470	received by the server, like other user commands. The first argument is
		1471	the logged-in player. Ext commands can only be processed after a player
		1472	has logged in successfully.
		1473
		1474	The values will be sent back to the client.
		1475
		1476	=item cf::register_async_extcmd $name => \&callback($pl,$reply->(...),@args)
		1477
		1478	Same as C<cf::register_extcmd>, but instead of returning values, the
		1479	callback needs to clal the C<$reply> function.
		1480
		1481	=item cf::register_exticmd $name => \&callback($ns,@args)
		1482
		1483	Register a callback for execution when the client sends an (asynchronous)
		1484	exticmd packet. Exti commands are processed by the server as soon as they
		1485	are received, i.e. out of order w.r.t. other commands. The first argument
		1486	is a client socket. Exti commands can be received anytime, even before
		1487	log-in.
		1488
		1489	The values will be sent back to the client.
		1490
		1491	=item cf::register_async_exticmd $name => \&callback($ns,$reply->(...),@args)
		1492
		1493	Same as C<cf::register_extcmd>, but instead of returning values, the
		1494	callback needs to clal the C<$reply> function.
		1495
		1496	=cut
		1497
465	sub register_extcmd {	1498	sub register_extcmd($$) {
466	my ($name, $cb) = @_;	1499	my ($name, $cb) = @_;
467		1500
468	my $caller = caller;	1501	$EXTCMD{$name} = $cb;
469	#warn "registering extcmd '$name' to '$caller'";
470
471	$extcmd{$name} = [$cb, $caller];
472	}	1502	}
473		1503
474	sub register {	1504	sub register_async_extcmd($$) {
475	my ($base, $pkg) = @_;	1505	my ($name, $cb) = @_;
476		1506
477	#TODO	1507	$EXTACMD{$name} = $cb;
478	}	1508	}
479		1509
480	sub load_extension {	1510	sub register_exticmd($$) {
481	my ($path) = @_;
482
483	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
484	my $base = $1;
485	my $pkg = $1;
486	$pkg =~ s/[^[:word:]]/_/g;
487	$pkg = "ext::$pkg";
488
489	warn "loading '$path' into '$pkg'\n";
490
491	open my $fh, "<:utf8", $path
492	or die "$path: $!";
493
494	my $source =
495	"package $pkg; use strict; use utf8;\n"
496	. "#line 1 \"$path\"\n{\n"
497	. (do { local $/; <$fh> })
498	. "\n};\n1";
499
500	eval $source
501	or die "$path: $@";
502
503	push @exts, $pkg;
504	$ext_pkg{$base} = $pkg;
505
506	# no strict 'refs';
507	# @{"$pkg\::ISA"} = ext::;
508
509	register $base, $pkg;
510	}
511
512	sub unload_extension {
513	my ($pkg) = @_;
514
515	warn "removing extension $pkg\n";
516
517	# remove hooks
518	#TODO
519	# for my $idx (0 .. $#PLUGIN_EVENT) {
520	# delete $hook[$idx]{$pkg};
521	# }
522
523	# remove commands
524	for my $name (keys %command) {
525	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
526
527	if (@cb) {
528	$command{$name} = \@cb;
529	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
530	} else {
531	delete $command{$name};
532	delete $COMMAND{"$name\000"};
533	}
534	}
535
536	# remove extcmds
537	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
538	delete $extcmd{$name};
539	}
540
541	if (my $cb = $pkg->can ("unload")) {
542	eval {
543	$cb->($pkg);
544	1
545	} or warn "$pkg unloaded, but with errors: $@";
546	}
547
548	Symbol::delete_package $pkg;
549	}
550
551	sub load_extensions {
552	my $LIBDIR = maps_directory "perl";
553
554	for my $ext (<$LIBDIR/*.ext>) {
555	next unless -r $ext;
556	eval {
557	load_extension $ext;
558	1
559	} or warn "$ext not loaded: $@";
560	}
561	}
562
563	sub _perl_reload(&) {
564	my ($msg) = @_;	1511	my ($name, $cb) = @_;
565		1512
566	$msg->("reloading...");	1513	$EXTICMD{$name} = $cb;
567
568	eval {
569	# 1. cancel all watchers
570	$_->cancel for Event::all_watchers;
571
572	# 2. unload all extensions
573	for (@exts) {
574	$msg->("unloading <$_>");
575	unload_extension $_;
576	}
577
578	# 3. unload all modules loaded from $LIBDIR
579	while (my ($k, $v) = each %INC) {
580	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
581
582	$msg->("removing <$k>");
583	delete $INC{$k};
584
585	$k =~ s/\.pm$//;
586	$k =~ s/\//::/g;
587
588	if (my $cb = $k->can ("unload_module")) {
589	$cb->();
590	}
591
592	Symbol::delete_package $k;
593	}
594
595	# 4. get rid of safe::, as good as possible
596	Symbol::delete_package "safe::$_"
597	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
598
599	# 5. remove register_script_function callbacks
600	# TODO
601
602	# 6. unload cf.pm "a bit"
603	delete $INC{"cf.pm"};
604
605	# don't, removes xs symbols, too,
606	# and global variables created in xs
607	#Symbol::delete_package __PACKAGE__;
608
609	# 7. reload cf.pm
610	$msg->("reloading cf.pm");
611	require cf;
612	};
613	$msg->($@) if $@;
614
615	$msg->("reloaded");
616	};
617
618	sub perl_reload() {
619	_perl_reload {
620	warn $_[0];
621	print "$_[0]\n";
622	};
623	}	1514	}
624		1515
625	register_command "perl-reload", 0, sub {	1516	sub register_async_exticmd($$) {
626	my ($who, $arg) = @_;	1517	my ($name, $cb) = @_;
627		1518
628	if ($who->flag (FLAG_WIZ)) {	1519	$EXTIACMD{$name} = $cb;
629	_perl_reload {	1520	}
630	warn $_[0];	1521
631	$who->message ($_[0]);	1522	use File::Glob ();
		1523
		1524	cf::player->attach (
		1525	on_unknown_command => sub {
		1526	my ($pl, $name, $params) = @_;
		1527
		1528	my $cb = $COMMAND{$name}
		1529	or return;
		1530
		1531	for my $cmd (@$cb) {
		1532	$cmd->[1]->($pl->ob, $params);
632	};	1533	}
		1534
		1535	cf::override;
633	}	1536	},
634	};
635
636	#############################################################################
637	# extcmd framework, basically convert ext <msg>
638	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
639
640	attach_to_players
641	on_extcmd => sub {	1537	on_extcmd => sub {
642	my ($pl, $buf) = @_;	1538	my ($pl, $buf) = @_;
643		1539
644	my $msg = eval { from_json $buf };	1540	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
645		1541
646	if (ref $msg) {	1542	if (ref $msg) {
647	if (my $cb = $extcmd{$msg->{msgtype}}) {	1543	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
648	if (my %reply = $cb->[0]->($pl, $msg)) {	1544
649	$pl->ext_reply ($msg->{msgid}, %reply);	1545	if (my $cb = $EXTACMD{$type}) {
		1546	$cb->(
		1547	$pl,
		1548	sub {
		1549	$pl->ext_msg ("reply-$reply", @_)
		1550	if $reply;
		1551	},
		1552	@payload
		1553	);
		1554	} else {
		1555	my @reply;
		1556
		1557	if (my $cb = $EXTCMD{$type}) {
		1558	@reply = $cb->($pl, @payload);
		1559	}
		1560
		1561	$pl->ext_msg ("reply-$reply", @reply)
		1562	if $reply;
		1563	}
		1564
		1565	} else {
		1566	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1567	}
		1568
		1569	cf::override;
		1570	},
		1571	);
		1572
		1573	# "readahead" all extensions
		1574	sub cache_extensions {
		1575	my $grp = IO::AIO::aio_group;
		1576
		1577	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1578	for (grep /\.ext$/, @{$_[0]}) {
		1579	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1580	}
		1581	};
		1582
		1583	$grp
		1584	}
		1585
		1586	sub _ext_cfg_reg($$$$) {
		1587	my ($rvar, $varname, $cfgname, $default) = @_;
		1588
		1589	$cfgname = lc $varname
		1590	unless length $cfgname;
		1591
		1592	$EXT_CFG{$cfgname} = [$rvar, $default];
		1593
		1594	$$rvar = exists $CFG{$cfgname} ? $CFG{$cfgname} : $default;
		1595	}
		1596
		1597	sub load_extensions {
		1598	info "loading extensions...";
		1599
		1600	%EXT_CFG = ();
		1601
		1602	cf::sync_job {
		1603	my %todo;
		1604
		1605	for my $path (<$LIBDIR/*.ext>) {
		1606	next unless -r $path;
		1607
		1608	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1609	my $base = $1;
		1610	my $pkg = $1;
		1611	$pkg =~ s/[^[:word:]]/_/g;
		1612	$pkg = "ext::$pkg";
		1613
		1614	open my $fh, "<:utf8", $path
		1615	or die "$path: $!";
		1616
		1617	my $source = do { local $/; <$fh> };
		1618
		1619	my %ext = (
		1620	path => $path,
		1621	base => $base,
		1622	pkg => $pkg,
		1623	);
		1624
		1625	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1626	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1627
		1628	$ext{source} =
		1629	"package $pkg; use common::sense;\n"
		1630	. "#line 1 \"$path\"\n{\n"
		1631	. $source
		1632	. "\n};\n1";
		1633
		1634	$todo{$base} = \%ext;
		1635	}
		1636
		1637	my $pass = 0;
		1638	my %done;
		1639	while (%todo) {
		1640	my $progress;
		1641
		1642	++$pass;
		1643
		1644	ext:
		1645	while (my ($k, $v) = each %todo) {
		1646	for (split /,\s*/, $v->{meta}{depends}) {
		1647	next ext
		1648	unless exists $done{$_};
		1649	}
		1650
		1651	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1652
		1653	my $source = $v->{source};
		1654
		1655	# support "CONF varname :confname = default" pseudo-statements
		1656	$source =~ s{
		1657	^ CONF \s+ ([^\s:=]+) \s* (?:: \s* ([^\s:=]+) \s* )? = ([^\n#]+)
		1658	}{
		1659	"our \$$1; BEGIN { cf::_ext_cfg_reg \\\$$1, q\x00$1\x00, q\x00$2\x00, $3 }";
		1660	}gmxe;
		1661
		1662	my $active = eval $source;
		1663
		1664	if (length $@) {
		1665	error "$v->{path}: $@\n";
		1666
		1667	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1668	if exists $v->{meta}{mandatory};
		1669
		1670	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1671	delete $todo{$k};
		1672	} else {
		1673	$done{$k} = delete $todo{$k};
		1674	push @EXTS, $v->{pkg};
		1675	$progress = 1;
		1676
		1677	info "$v->{base}: extension inactive.\n"
		1678	unless $active;
650	}	1679	}
651	}	1680	}
652	} else {	1681
653	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1682	unless ($progress) {
		1683	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1684
		1685	while (my ($k, $v) = each %todo) {
		1686	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1687	if exists $v->{meta}{mandatory};
		1688	}
		1689
		1690	last;
654	}	1691	}
655		1692	}
656	cf::override;
657	},	1693	};
658	;	1694	}
659		1695
660	#############################################################################	1696	#############################################################################
661	# load/save/clean perl data associated with a map
662		1697
663	*cf::mapsupport::on_clean = sub {	1698	=back
		1699
		1700	=head2 CORE EXTENSIONS
		1701
		1702	Functions and methods that extend core deliantra objects.
		1703
		1704	=cut
		1705
		1706	package cf::player;
		1707
		1708	use Coro::AIO;
		1709
		1710	=head3 cf::player
		1711
		1712	=over 4
		1713
		1714	=item cf::player::num_playing
		1715
		1716	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1717
		1718	=cut
		1719
		1720	sub num_playing {
		1721	scalar grep
		1722	$_->ob->map
		1723	&& !$_->hidden
		1724	&& !$_->ob->flag (cf::FLAG_WIZ),
		1725	cf::player::list
		1726	}
		1727
		1728	=item cf::player::find $login
		1729
		1730	Returns the given player object, loading it if necessary (might block).
		1731
		1732	=cut
		1733
		1734	sub playerdir($) {
		1735	"$PLAYERDIR/"
		1736	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1737	}
		1738
		1739	sub path($) {
		1740	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1741
		1742	(playerdir $login) . "/playerdata"
		1743	}
		1744
		1745	sub find_active($) {
		1746	$cf::PLAYER{$_[0]}
		1747	and $cf::PLAYER{$_[0]}->active
		1748	and $cf::PLAYER{$_[0]}
		1749	}
		1750
		1751	sub exists($) {
664	my ($map) = @_;	1752	my ($login) = @_;
665		1753
666	my $path = $map->tmpname;	1754	$cf::PLAYER{$login}
667	defined $path or return;	1755	or !aio_stat path $login
668
669	unlink "$path.cfperl";
670	unlink "$path.pst";
671	};
672
673	*cf::mapsupport::on_swapin =
674	*cf::mapsupport::on_load = sub {
675	my ($map) = @_;
676
677	my $path = $map->tmpname;
678	$path = $map->path unless defined $path;
679
680	open my $fh, "<:raw", "$path.cfperl"
681	or return; # no perl data
682
683	my $data = Storable::thaw do { local $/; <$fh> };
684
685	$data->{version} <= 1
686	or return; # too new
687
688	$map->_set_obs ($data->{obs});
689	};
690
691	attach_to_maps prio => -10000, package => cf::mapsupport::;
692
693	#############################################################################
694	# load/save perl data associated with player->ob objects
695
696	sub all_objects(@) {
697	@_, map all_objects ($_->inv), @_
698	}	1756	}
699		1757
700	attach_to_players	1758	sub find($) {
		1759	return $cf::PLAYER{$_[0]} || do {
		1760	my $login = $_[0];
		1761
		1762	my $guard = cf::lock_acquire "user_find:$login";
		1763
		1764	$cf::PLAYER{$_[0]} || do {
		1765	# rename old playerfiles to new ones
		1766	#TODO: remove when no longer required
		1767	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1768	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1769	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1770	aio_unlink +(playerdir $login) . "/$login.pl";
		1771
		1772	my $f = new_from_file cf::object::thawer path $login
		1773	or return;
		1774
		1775	my $pl = cf::player::load_pl $f
		1776	or return;
		1777
		1778	local $cf::PLAYER_LOADING{$login} = $pl;
		1779	$f->resolve_delayed_derefs;
		1780	$cf::PLAYER{$login} = $pl
		1781	}
		1782	}
		1783	}
		1784
		1785	cf::player->attach (
701	on_load => sub {	1786	on_load => sub {
702	my ($pl, $path) = @_;	1787	my ($pl, $path) = @_;
703		1788
704	for my $o (all_objects $pl->ob) {	1789	# restore slots saved in save, below
705	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1790	my $slots = delete $pl->{_slots};
706	$o->set_ob_key_value ("_perl_data");
707		1791
708	%$o = %{ Storable::thaw pack "H*", $value };	1792	$pl->ob->current_weapon ($slots->[0]);
		1793	$pl->combat_ob ($slots->[1]);
		1794	$pl->ranged_ob ($slots->[2]);
		1795	},
		1796	);
		1797
		1798	sub save($) {
		1799	my ($pl) = @_;
		1800
		1801	return if $pl->{deny_save};
		1802
		1803	my $path = path $pl;
		1804	my $guard = cf::lock_acquire "user_save:$path";
		1805
		1806	return if $pl->{deny_save};
		1807
		1808	aio_mkdir playerdir $pl, 0770;
		1809	$pl->{last_save} = $cf::RUNTIME;
		1810
		1811	cf::get_slot 0.01;
		1812
		1813	# save slots, to be restored later
		1814	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1815
		1816	$pl->save_pl ($path);
		1817	cf::cede_to_tick;
		1818	}
		1819
		1820	sub new($) {
		1821	my ($login) = @_;
		1822
		1823	my $self = create;
		1824
		1825	$self->ob->name ($login);
		1826	$self->{deny_save} = 1;
		1827
		1828	$cf::PLAYER{$login} = $self;
		1829
		1830	$self
		1831	}
		1832
		1833	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1834
		1835	=cut
		1836
		1837	sub send_msg {
		1838	my $ns = shift->ns
		1839	or return;
		1840	$ns->send_msg (@_);
		1841	}
		1842
		1843	=item $pl->quit_character
		1844
		1845	Nukes the player without looking back. If logged in, the connection will
		1846	be destroyed. May block for a long time.
		1847
		1848	=cut
		1849
		1850	sub quit_character {
		1851	my ($pl) = @_;
		1852
		1853	my $name = $pl->ob->name;
		1854
		1855	$pl->{deny_save} = 1;
		1856	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1857
		1858	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1859	$pl->deactivate;
		1860
		1861	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1862	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1863	ext::highscore::check ($pl->ob);
		1864
		1865	$pl->ns->destroy if $pl->ns;
		1866
		1867	my $path = playerdir $pl;
		1868	my $temp = "$path~$cf::RUNTIME~deleting~";
		1869	aio_rename $path, $temp;
		1870	delete $cf::PLAYER{$pl->ob->name};
		1871	$pl->destroy;
		1872
		1873	my $prefix = qr<^~\Q$name\E/>;
		1874
		1875	# nuke player maps
		1876	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1877
		1878	IO::AIO::aio_rmtree $temp;
		1879	}
		1880
		1881	=item $pl->kick
		1882
		1883	Kicks a player out of the game. This destroys the connection.
		1884
		1885	=cut
		1886
		1887	sub kick {
		1888	my ($pl, $kicker) = @_;
		1889
		1890	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1891	$pl->killer ("kicked");
		1892	$pl->ns->destroy;
		1893	}
		1894
		1895	=item cf::player::list_logins
		1896
		1897	Returns am arrayref of all valid playernames in the system, can take a
		1898	while and may block, so not sync_job-capable, ever.
		1899
		1900	=cut
		1901
		1902	sub list_logins {
		1903	my $dirs = aio_readdir $PLAYERDIR
		1904	or return [];
		1905
		1906	my @logins;
		1907
		1908	for my $login (@$dirs) {
		1909	my $path = path $login;
		1910
		1911	# a .pst is a dead give-away for a valid player
		1912	# if no pst file found, open and chekc for blocked users
		1913	if (aio_stat "$path.pst") {
		1914	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1915	aio_read $fh, 0, 512, my $buf, 0 or next;
		1916	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1917	}
		1918
		1919	utf8::decode $login;
		1920	push @logins, $login;
		1921	}
		1922
		1923	\@logins
		1924	}
		1925
		1926	=item $player->maps
		1927
		1928	=item cf::player::maps $login
		1929
		1930	Returns an arrayref of map paths that are private for this
		1931	player. May block.
		1932
		1933	=cut
		1934
		1935	sub maps($) {
		1936	my ($pl) = @_;
		1937
		1938	$pl = ref $pl ? $pl->ob->name : $pl;
		1939
		1940	my $files = aio_readdir playerdir $pl
		1941	or return;
		1942
		1943	my @paths;
		1944
		1945	for (@$files) {
		1946	utf8::decode $_;
		1947	next if /\.(?:pl|pst)$/;
		1948	next unless /^$PATH_SEP/o;
		1949
		1950	push @paths, cf::map::normalise "~$pl/$_";
		1951	}
		1952
		1953	\@paths
		1954	}
		1955
		1956	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1957
		1958	Expand deliantra pod fragments into protocol xml.
		1959
		1960	=item $player->ext_msg ($type, @msg)
		1961
		1962	Sends an ext event to the client.
		1963
		1964	=cut
		1965
		1966	sub ext_msg($$@) {
		1967	my ($self, $type, @msg) = @_;
		1968
		1969	$self->ns->ext_msg ($type, @msg);
		1970	}
		1971
		1972	=head3 cf::region
		1973
		1974	=over 4
		1975
		1976	=cut
		1977
		1978	package cf::region;
		1979
		1980	=item cf::region::find_by_path $path
		1981
		1982	Tries to decuce the likely region for a map knowing only its path.
		1983
		1984	=cut
		1985
		1986	sub find_by_path($) {
		1987	my ($path) = @_;
		1988
		1989	$path =~ s/^~[^\/]*//; # skip ~login
		1990
		1991	my ($match, $specificity);
		1992
		1993	for my $region (list) {
		1994	if ($region->{match} && $path =~ $region->{match}) {
		1995	($match, $specificity) = ($region, $region->specificity)
		1996	if $region->specificity > $specificity;
		1997	}
		1998	}
		1999
		2000	$match
		2001	}
		2002
		2003	=back
		2004
		2005	=head3 cf::map
		2006
		2007	=over 4
		2008
		2009	=cut
		2010
		2011	package cf::map;
		2012
		2013	use Fcntl;
		2014	use Coro::AIO;
		2015
		2016	use overload
		2017	'""' => \&as_string,
		2018	fallback => 1;
		2019
		2020	our $MAX_RESET = 3600;
		2021	our $DEFAULT_RESET = 3000;
		2022
		2023	sub generate_random_map {
		2024	my ($self, $rmp) = @_;
		2025
		2026	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		2027
		2028	$self->_create_random_map ($rmp);
		2029	}
		2030
		2031	=item cf::map->register ($regex, $prio)
		2032
		2033	Register a handler for the map path matching the given regex at the
		2034	givne priority (higher is better, built-in handlers have priority 0, the
		2035	default).
		2036
		2037	=cut
		2038
		2039	sub register {
		2040	my (undef, $regex, $prio) = @_;
		2041	my $pkg = caller;
		2042
		2043	push @{"$pkg\::ISA"}, __PACKAGE__;
		2044
		2045	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		2046	}
		2047
		2048	# also paths starting with '/'
		2049	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		2050
		2051	sub thawer_merge {
		2052	my ($self, $merge) = @_;
		2053
		2054	# we have to keep some variables in memory intact
		2055	local $self->{path};
		2056	local $self->{load_path};
		2057
		2058	$self->SUPER::thawer_merge ($merge);
		2059	}
		2060
		2061	sub normalise {
		2062	my ($path, $base) = @_;
		2063
		2064	$path = "$path"; # make sure it's a string
		2065
		2066	$path =~ s/\.map$//;
		2067
		2068	# map plan:
		2069	#
		2070	# /! non-realised random map exit (special hack!)
		2071	# {... are special paths that are not being touched
		2072	# ?xxx/... are special absolute paths
		2073	# ?random/... random maps
		2074	# /... normal maps
		2075	# ~user/... per-player map of a specific user
		2076
		2077	$path =~ s/$PATH_SEP/\//go;
		2078
		2079	# treat it as relative path if it starts with
		2080	# something that looks reasonable
		2081	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		2082	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		2083
		2084	$base =~ s{[^/]+/?$}{};
		2085	$path = "$base/$path";
		2086	}
		2087
		2088	for ($path) {
		2089	redo if s{/\.?/}{/};
		2090	redo if s{/[^/]+/\.\./}{/};
		2091	}
		2092
		2093	$path
		2094	}
		2095
		2096	sub new_from_path {
		2097	my (undef, $path, $base) = @_;
		2098
		2099	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2100
		2101	$path = normalise $path, $base;
		2102
		2103	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2104	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2105	my $self = bless cf::map::new, $pkg;
		2106	$self->{path} = $path; $self->path ($path);
		2107	$self->init; # pass $1 etc.
		2108	return $self;
		2109	}
		2110	}
		2111
		2112	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2113	()
		2114	}
		2115
		2116	# may re-bless or do other evil things
		2117	sub init {
		2118	my ($self) = @_;
		2119
		2120	$self
		2121	}
		2122
		2123	sub as_string {
		2124	my ($self) = @_;
		2125
		2126	"$self->{path}"
		2127	}
		2128
		2129	# the displayed name, this is a one way mapping
		2130	sub visible_name {
		2131	&as_string
		2132	}
		2133
		2134	# the original (read-only) location
		2135	sub load_path {
		2136	my ($self) = @_;
		2137
		2138	"$MAPDIR/$self->{path}.map"
		2139	}
		2140
		2141	# the temporary/swap location
		2142	sub save_path {
		2143	my ($self) = @_;
		2144
		2145	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2146	"$TMPDIR/$path.map"
		2147	}
		2148
		2149	# the unique path, undef == no special unique path
		2150	sub uniq_path {
		2151	my ($self) = @_;
		2152
		2153	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2154	"$UNIQUEDIR/$path"
		2155	}
		2156
		2157	sub decay_objects {
		2158	my ($self) = @_;
		2159
		2160	return if $self->{deny_reset};
		2161
		2162	$self->do_decay_objects;
		2163	}
		2164
		2165	sub unlink_save {
		2166	my ($self) = @_;
		2167
		2168	utf8::encode (my $save = $self->save_path);
		2169	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2170	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2171	}
		2172
		2173	sub load_header_from($) {
		2174	my ($self, $path) = @_;
		2175
		2176	utf8::encode $path;
		2177	my $f = new_from_file cf::object::thawer $path
		2178	or return;
		2179
		2180	$self->_load_header ($f)
		2181	or return;
		2182
		2183	local $MAP_LOADING{$self->{path}} = $self;
		2184	$f->resolve_delayed_derefs;
		2185
		2186	$self->{load_path} = $path;
		2187
		2188	1
		2189	}
		2190
		2191	# used to laod the header of an original map
		2192	sub load_header_orig {
		2193	my ($self) = @_;
		2194
		2195	$self->load_header_from ($self->load_path)
		2196	}
		2197
		2198	# used to laod the header of an instantiated map
		2199	sub load_header_temp {
		2200	my ($self) = @_;
		2201
		2202	$self->load_header_from ($self->save_path)
		2203	}
		2204
		2205	# called after loading the header from an instantiated map
		2206	sub prepare_temp {
		2207	my ($self) = @_;
		2208
		2209	$self->last_access ((delete $self->{last_access})
		2210	|| $cf::RUNTIME); #d#
		2211	# safety
		2212	$self->{instantiate_time} = $cf::RUNTIME
		2213	if $self->{instantiate_time} > $cf::RUNTIME;
		2214	}
		2215
		2216	# called after loading the header from an original map
		2217	sub prepare_orig {
		2218	my ($self) = @_;
		2219
		2220	$self->{load_original} = 1;
		2221	$self->{instantiate_time} = $cf::RUNTIME;
		2222	$self->last_access ($cf::RUNTIME);
		2223	$self->instantiate;
		2224	}
		2225
		2226	sub load_header {
		2227	my ($self) = @_;
		2228
		2229	if ($self->load_header_temp) {
		2230	$self->prepare_temp;
		2231	} else {
		2232	$self->load_header_orig
		2233	or return;
		2234	$self->prepare_orig;
		2235	}
		2236
		2237	$self->{deny_reset} = 1
		2238	if $self->no_reset;
		2239
		2240	$self->default_region (cf::region::find_by_path $self->{path})
		2241	unless $self->default_region;
		2242
		2243	1
		2244	}
		2245
		2246	sub find;
		2247	sub find {
		2248	my ($path, $origin) = @_;
		2249
		2250	cf::cede_to_tick;
		2251
		2252	$path = normalise $path, $origin;
		2253
		2254	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2255	my $guard2 = cf::lock_acquire "map_find:$path";
		2256
		2257	$cf::MAP{$path} || do {
		2258	my $map = new_from_path cf::map $path
		2259	or return;
		2260
		2261	$map->{last_save} = $cf::RUNTIME;
		2262
		2263	$map->load_header
		2264	or return;
		2265
		2266	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2267	# doing this can freeze the server in a sync job, obviously
		2268	#$cf::WAIT_FOR_TICK->wait;
		2269	undef $guard2;
		2270	undef $guard1;
		2271	$map->reset;
		2272	return find $path;
		2273	}
		2274
		2275	$cf::MAP{$path} = $map
		2276	}
		2277	}
		2278
		2279	sub pre_load { }
		2280	#sub post_load { } # XS
		2281
		2282	sub load {
		2283	my ($self) = @_;
		2284
		2285	local $self->{deny_reset} = 1; # loading can take a long time
		2286
		2287	my $path = $self->{path};
		2288
		2289	{
		2290	my $guard = cf::lock_acquire "map_data:$path";
		2291
		2292	return unless $self->valid;
		2293	return unless $self->state == cf::MAP_SWAPPED;
		2294
		2295	$self->alloc;
		2296
		2297	$self->pre_load;
		2298	cf::cede_to_tick;
		2299
		2300	if (exists $self->{load_path}) {
		2301	my $f = new_from_file cf::object::thawer $self->{load_path};
		2302	$f->skip_block;
		2303	$self->_load_objects ($f)
		2304	or return;
		2305
		2306	$self->post_load_original
		2307	if delete $self->{load_original};
		2308
		2309	if (my $uniq = $self->uniq_path) {
		2310	utf8::encode $uniq;
		2311	unless (aio_stat $uniq) {
		2312	if (my $f = new_from_file cf::object::thawer $uniq) {
		2313	$self->clear_unique_items;
		2314	$self->_load_objects ($f);
		2315	$f->resolve_delayed_derefs;
		2316	}
		2317	}
709	}	2318	}
		2319
		2320	$f->resolve_delayed_derefs;
		2321	} else {
		2322	$self->post_load_original
		2323	if delete $self->{load_original};
710	}	2324	}
		2325
		2326	$self->state (cf::MAP_INACTIVE);
		2327
		2328	cf::cede_to_tick;
		2329	# now do the right thing for maps
		2330	$self->link_multipart_objects;
		2331	$self->difficulty ($self->estimate_difficulty)
		2332	unless $self->difficulty;
		2333	cf::cede_to_tick;
		2334
		2335	unless ($self->{deny_activate}) {
		2336	$self->decay_objects;
		2337	$self->fix_auto_apply;
		2338	$self->update_buttons;
		2339	cf::cede_to_tick;
		2340	#$self->activate; # no longer activate maps automatically
		2341	}
		2342
		2343	$self->{last_save} = $cf::RUNTIME;
		2344	$self->last_access ($cf::RUNTIME);
711	},	2345	}
712	;
713		2346
714	#############################################################################	2347	$self->post_load;
715	# core extensions - in perl
716		2348
717	=item cf::player::exists $login	2349	1
718
719	Returns true when the given account exists.
720
721	=cut
722
723	sub cf::player::exists($) {
724	cf::player::find $_[0]
725	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
726	}	2350	}
727		2351
		2352	# customize the map for a given player, i.e.
		2353	# return the _real_ map. used by e.g. per-player
		2354	# maps to change the path to ~playername/mappath
		2355	sub customise_for {
		2356	my ($self, $ob) = @_;
		2357
		2358	return find "~" . $ob->name . "/" . $self->{path}
		2359	if $self->per_player;
		2360
		2361	# return find "?party/" . $ob->name . "/" . $self->{path}
		2362	# if $self->per_party;
		2363
		2364	$self
		2365	}
		2366
		2367	sub find_sync {
		2368	my ($path, $origin) = @_;
		2369
		2370	# it's a bug to call this from the main context
		2371	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2372	if $Coro::current == $Coro::main;
		2373
		2374	find $path, $origin
		2375	}
		2376
		2377	sub do_load_sync {
		2378	my ($map) = @_;
		2379
		2380	# it's a bug to call this from the main context
		2381	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2382	if $Coro::current == $Coro::main;
		2383
		2384	$map->load;
		2385	}
		2386
		2387	our %MAP_PREFETCH;
		2388	our $MAP_PREFETCHER = undef;
		2389
		2390	sub find_async {
		2391	my ($path, $origin, $load) = @_;
		2392
		2393	$path = normalise $path, $origin;
		2394
		2395	if (my $map = $cf::MAP{$path}) {
		2396	return $map if !$load || $map->linkable;
		2397	}
		2398
		2399	$MAP_PREFETCH{$path} |= $load;
		2400
		2401	$MAP_PREFETCHER ||= cf::async {
		2402	$Coro::current->{desc} = "map prefetcher";
		2403
		2404	while (%MAP_PREFETCH) {
		2405	for my $k (keys %MAP_PREFETCH) {
		2406	if (my $map = find $k) {
		2407	$map->load if $MAP_PREFETCH{$k};
		2408	}
		2409
		2410	delete $MAP_PREFETCH{$k};
		2411	}
		2412	}
		2413	undef $MAP_PREFETCHER;
		2414	};
		2415	$MAP_PREFETCHER->prio (6);
		2416
		2417	()
		2418	}
		2419
		2420	# common code, used by both ->save and ->swapout
		2421	sub _save {
		2422	my ($self) = @_;
		2423
		2424	$self->{last_save} = $cf::RUNTIME;
		2425
		2426	return unless $self->dirty;
		2427
		2428	my $save = $self->save_path; utf8::encode $save;
		2429	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2430
		2431	$self->{load_path} = $save;
		2432
		2433	return if $self->{deny_save};
		2434
		2435	local $self->{last_access} = $self->last_access;#d#
		2436
		2437	cf::async {
		2438	$Coro::current->{desc} = "map player save";
		2439	$_->contr->save for $self->players;
		2440	};
		2441
		2442	cf::get_slot 0.02;
		2443
		2444	if ($uniq) {
		2445	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2446	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2447	} else {
		2448	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2449	}
		2450	}
		2451
		2452	sub save {
		2453	my ($self) = @_;
		2454
		2455	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2456
		2457	$self->_save;
		2458	}
		2459
		2460	sub swap_out {
		2461	my ($self) = @_;
		2462
		2463	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2464
		2465	return if !$self->linkable;
		2466	return if $self->{deny_save};
		2467	return if $self->players;
		2468
		2469	# first deactivate the map and "unlink" it from the core
		2470	$self->deactivate;
		2471	$_->clear_links_to ($self) for values %cf::MAP;
		2472	$self->state (cf::MAP_SWAPPED);
		2473
		2474	# then atomically save
		2475	$self->_save;
		2476
		2477	# then free the map
		2478	$self->clear;
		2479	}
		2480
		2481	sub reset_at {
		2482	my ($self) = @_;
		2483
		2484	# TODO: safety, remove and allow resettable per-player maps
		2485	return 1e99 if $self->{deny_reset};
		2486
		2487	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2488	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2489
		2490	$time + $to
		2491	}
		2492
		2493	sub should_reset {
		2494	my ($self) = @_;
		2495
		2496	$self->reset_at <= $cf::RUNTIME
		2497	}
		2498
		2499	sub reset {
		2500	my ($self) = @_;
		2501
		2502	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2503
		2504	return if $self->players;
		2505
		2506	cf::trace "resetting map ", $self->path, "\n";
		2507
		2508	$self->state (cf::MAP_SWAPPED);
		2509
		2510	# need to save uniques path
		2511	unless ($self->{deny_save}) {
		2512	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2513
		2514	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2515	if $uniq;
		2516	}
		2517
		2518	delete $cf::MAP{$self->path};
		2519
		2520	$self->deactivate;
		2521	$_->clear_links_to ($self) for values %cf::MAP;
		2522	$self->clear;
		2523
		2524	$self->unlink_save;
		2525	$self->destroy;
		2526	}
		2527
		2528	my $nuke_counter = "aaaa";
		2529
		2530	sub nuke {
		2531	my ($self) = @_;
		2532
		2533	{
		2534	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2535
		2536	delete $cf::MAP{$self->path};
		2537
		2538	$self->unlink_save;
		2539
		2540	bless $self, "cf::map::wrap";
		2541	delete $self->{deny_reset};
		2542	$self->{deny_save} = 1;
		2543	$self->reset_timeout (1);
		2544	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2545
		2546	$cf::MAP{$self->path} = $self;
		2547	}
		2548
		2549	$self->reset; # polite request, might not happen
		2550	}
		2551
		2552	=item $maps = cf::map::tmp_maps
		2553
		2554	Returns an arrayref with all map paths of currently instantiated and saved
		2555	maps. May block.
		2556
		2557	=cut
		2558
		2559	sub tmp_maps() {
		2560	[
		2561	map {
		2562	utf8::decode $_;
		2563	/\.map$/
		2564	? normalise $_
		2565	: ()
		2566	} @{ aio_readdir $TMPDIR or [] }
		2567	]
		2568	}
		2569
		2570	=item $maps = cf::map::random_maps
		2571
		2572	Returns an arrayref with all map paths of currently instantiated and saved
		2573	random maps. May block.
		2574
		2575	=cut
		2576
		2577	sub random_maps() {
		2578	[
		2579	map {
		2580	utf8::decode $_;
		2581	/\.map$/
		2582	? normalise "?random/$_"
		2583	: ()
		2584	} @{ aio_readdir $RANDOMDIR or [] }
		2585	]
		2586	}
		2587
		2588	=item cf::map::unique_maps
		2589
		2590	Returns an arrayref of paths of all shared maps that have
		2591	instantiated unique items. May block.
		2592
		2593	=cut
		2594
		2595	sub unique_maps() {
		2596	[
		2597	map {
		2598	utf8::decode $_;
		2599	s/\.map$//; # TODO future compatibility hack
		2600	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2601	? ()
		2602	: normalise $_
		2603	} @{ aio_readdir $UNIQUEDIR or [] }
		2604	]
		2605	}
		2606
		2607	=item cf::map::static_maps
		2608
		2609	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2610	file in the shared directory excluding F</styles> and F</editor>). May
		2611	block.
		2612
		2613	=cut
		2614
		2615	sub static_maps() {
		2616	my @dirs = "";
		2617	my @maps;
		2618
		2619	while (@dirs) {
		2620	my $dir = shift @dirs;
		2621
		2622	next if $dir eq "/styles" || $dir eq "/editor";
		2623
		2624	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2625	or return;
		2626
		2627	for (@$files) {
		2628	s/\.map$// or next;
		2629	utf8::decode $_;
		2630	push @maps, "$dir/$_";
		2631	}
		2632
		2633	push @dirs, map "$dir/$_", @$dirs;
		2634	}
		2635
		2636	\@maps
		2637	}
		2638
		2639	=back
		2640
		2641	=head3 cf::object
		2642
		2643	=cut
		2644
		2645	package cf::object;
		2646
		2647	=over 4
		2648
		2649	=item $ob->inv_recursive
		2650
		2651	Returns the inventory of the object I<and> their inventories, recursively,
		2652	but I<not> the object itself.
		2653
		2654	=cut
		2655
		2656	sub inv_recursive_;
		2657	sub inv_recursive_ {
		2658	map { $_, inv_recursive_ $_->inv } @_
		2659	}
		2660
		2661	sub inv_recursive {
		2662	inv_recursive_ inv $_[0]
		2663	}
		2664
		2665	=item $ref = $ob->ref
		2666
		2667	Creates and returns a persistent reference to an object that can be stored as a string.
		2668
		2669	=item $ob = cf::object::deref ($refstring)
		2670
		2671	returns the objetc referenced by refstring. may return undef when it cannot find the object,
		2672	even if the object actually exists. May block.
		2673
		2674	=cut
		2675
		2676	sub deref {
		2677	my ($ref) = @_;
		2678
		2679	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2680	my ($uuid, $name) = ($1, $2);
		2681	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2682	or return;
		2683	$pl->ob->uuid eq $uuid
		2684	or return;
		2685
		2686	$pl->ob
		2687	} else {
		2688	warn "$ref: cannot resolve object reference\n";
		2689	undef
		2690	}
		2691	}
		2692
		2693	package cf;
		2694
		2695	=back
		2696
		2697	=head3 cf::object::player
		2698
		2699	=over 4
		2700
728	=item $player->reply ($npc, $msg[, $flags])	2701	=item $player_object->reply ($npc, $msg[, $flags])
729		2702
730	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2703	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
731	can be C<undef>. Does the right thing when the player is currently in a	2704	can be C<undef>. Does the right thing when the player is currently in a
732	dialogue with the given NPC character.	2705	dialogue with the given NPC character.
733		2706
734	=cut	2707	=cut
735		2708
		2709	our $SAY_CHANNEL = {
		2710	id => "say",
		2711	title => "Map",
		2712	reply => "say ",
		2713	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2714	};
		2715
		2716	our $CHAT_CHANNEL = {
		2717	id => "chat",
		2718	title => "Chat",
		2719	reply => "chat ",
		2720	tooltip => "Player chat and shouts, global to the server.",
		2721	};
		2722
736	# rough implementation of a future "reply" method that works	2723	# rough implementation of a future "reply" method that works
737	# with dialog boxes.	2724	# with dialog boxes.
		2725	#TODO: the first argument must go, split into a $npc->reply_to ( method
738	sub cf::object::player::reply($$$;$) {	2726	sub cf::object::player::reply($$$;$) {
739	my ($self, $npc, $msg, $flags) = @_;	2727	my ($self, $npc, $msg, $flags) = @_;
740		2728
741	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2729	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
742		2730
743	if ($self->{record_replies}) {	2731	if ($self->{record_replies}) {
744	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2732	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2733
745	} else {	2734	} else {
		2735	my $pl = $self->contr;
		2736
		2737	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2738	my $dialog = $pl->{npc_dialog};
		2739	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2740
		2741	} else {
746	$msg = $npc->name . " says: $msg" if $npc;	2742	$msg = $npc->name . " says: $msg" if $npc;
747	$self->message ($msg, $flags);	2743	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2744	}
		2745	}
		2746	}
		2747
		2748	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2749
		2750	=cut
		2751
		2752	sub cf::object::send_msg {
		2753	my $pl = shift->contr
		2754	or return;
		2755	$pl->send_msg (@_);
		2756	}
		2757
		2758	=item $player_object->may ("access")
		2759
		2760	Returns wether the given player is authorized to access resource "access"
		2761	(e.g. "command_wizcast").
		2762
		2763	This is implemented by checking a config setting of C<may_access> where
		2764	C<access> is replaced by the access string. The following alternatives are
		2765	possible (and are tested in order):
		2766
		2767	=over 4
		2768
		2769	=item * Player is DM
		2770
		2771	The request will succeed.
		2772
		2773	=item * may_access is an array reference
		2774
		2775	If either the player nickname or UUID is in the array, the request will
		2776	succeed, otherwise it will fail.
		2777
		2778	=item * may_access is a true value
		2779
		2780	The request will succeed.
		2781
		2782	=item * may_access is missing or false
		2783
		2784	The request will fail.
		2785
		2786	=back
		2787
		2788	=cut
		2789
		2790	sub cf::object::player::may {
		2791	my ($self, $access) = @_;
		2792
		2793	$self->flag (cf::FLAG_WIZ) ||
		2794	(ref $cf::CFG{"may_$access"}
		2795	? scalar grep $self->name eq $_ || $self->uuid eq $_, @{$cf::CFG{"may_$access"}}
		2796	: $cf::CFG{"may_$access"})
		2797	}
		2798
		2799	=item $player_object->enter_link
		2800
		2801	Freezes the player and moves him/her to a special map (C<{link}>).
		2802
		2803	The player should be reasonably safe there for short amounts of time (e.g.
		2804	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2805	though, as the player cannot control the character while it is on the link
		2806	map.
		2807
		2808	This method will never block, which is the whole reaosn for it's
		2809	existance: you can I<always> put a player onto the link map, which is the
		2810	only place to put objects that is guaranteed to exist.
		2811
		2812	A typical usage pattern is to call C<enter_link> synchronously from the
		2813	server, then start a new thread, do your blocking stuff there and then
		2814	call C<leave_link> from that thread.
		2815
		2816	=item $player_object->leave_link ($map, $x, $y)
		2817
		2818	Moves the player out of the special C<{link}> map onto the specified
		2819	map. If the map is not valid (or omitted), the player will be moved back
		2820	to the location he/she was before the call to C<enter_link>, or, if that
		2821	fails, to the emergency map position.
		2822
		2823	Might block.
		2824
		2825	=cut
		2826
		2827	sub link_map {
		2828	unless ($LINK_MAP) {
		2829	$LINK_MAP = cf::map::find "{link}"
		2830	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2831	$LINK_MAP->load;
		2832	}
		2833
		2834	$LINK_MAP
		2835	}
		2836
		2837	sub cf::object::player::enter_link {
		2838	my ($self) = @_;
		2839
		2840	$self->deactivate_recursive;
		2841
		2842	++$self->{_link_recursion};
		2843
		2844	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2845
		2846	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2847	if $self->map && $self->map->{path} ne "{link}";
		2848
		2849	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2850	}
		2851
		2852	sub cf::object::player::leave_link {
		2853	my ($self, $map, $x, $y) = @_;
		2854
		2855	return unless $self->contr->active;
		2856
		2857	my $link_pos = delete $self->{_link_pos};
		2858
		2859	unless ($map) {
		2860	# restore original map position
		2861	($map, $x, $y) = @{ $link_pos || [] };
		2862	$map = cf::map::find $map;
		2863
		2864	unless ($map) {
		2865	($map, $x, $y) = @$EMERGENCY_POSITION;
		2866	$map = cf::map::find $map
		2867	or die "FATAL: cannot load emergency map\n";
		2868	}
		2869	}
		2870
		2871	($x, $y) = (-1, -1)
		2872	unless (defined $x) && (defined $y);
		2873
		2874	# use -1 or undef as default coordinates, not 0, 0
		2875	($x, $y) = ($map->enter_x, $map->enter_y)
		2876	if $x <= 0 && $y <= 0;
		2877
		2878	$map->load;
		2879
		2880	return unless $self->contr->active;
		2881
		2882	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2883	if ($self->enter_map ($map, $x, $y)) {
		2884	# entering was successful
		2885	delete $self->{_link_recursion};
		2886	# only activate afterwards, to support waiting in hooks
		2887	$self->activate_recursive;
		2888	}
		2889
		2890	}
		2891
		2892	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2893
		2894	Moves the player to the given map-path and coordinates by first freezing
		2895	her, loading and preparing them map, calling the provided $check callback
		2896	that has to return the map if sucecssful, and then unfreezes the player on
		2897	the new (success) or old (failed) map position. In either case, $done will
		2898	be called at the end of this process.
		2899
		2900	Note that $check will be called with a potentially non-loaded map, so if
		2901	it needs a loaded map it has to call C<< ->load >>.
		2902
		2903	=cut
		2904
		2905	our $GOTOGEN;
		2906
		2907	sub cf::object::player::goto {
		2908	my ($self, $path, $x, $y, $check, $done) = @_;
		2909
		2910	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2911	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2912	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2913	($path, $x, $y) = @$EMERGENCY_POSITION;
		2914	}
		2915
		2916	# do generation counting so two concurrent goto's will be executed in-order
		2917	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2918
		2919	$self->enter_link;
		2920
		2921	(async {
		2922	$Coro::current->{desc} = "player::goto $path $x $y";
		2923
		2924	# *tag paths override both path and x|y
		2925	if ($path =~ /^\*(.*)$/) {
		2926	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2927	my $ob = $obs[rand @obs];
		2928
		2929	# see if we actually can go there
		2930	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2931	$ob = $obs[rand @obs];
		2932	} else {
		2933	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2934	}
		2935	# else put us there anyways for now #d#
		2936
		2937	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2938	} else {
		2939	($path, $x, $y) = (undef, undef, undef);
		2940	}
		2941	}
		2942
		2943	my $map = eval {
		2944	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2945
		2946	if ($map) {
		2947	$map = $map->customise_for ($self);
		2948	$map = $check->($map, $x, $y, $self) if $check && $map;
		2949	} else {
		2950	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2951	}
		2952
		2953	$map
		2954	};
		2955
		2956	if ($@) {
		2957	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2958	LOG llevError | logBacktrace, Carp::longmess $@;
		2959	}
		2960
		2961	if ($gen == $self->{_goto_generation}) {
		2962	delete $self->{_goto_generation};
		2963	$self->leave_link ($map, $x, $y);
		2964	}
		2965
		2966	$done->($self) if $done;
		2967	})->prio (1);
		2968	}
		2969
		2970	=item $player_object->enter_exit ($exit_object)
		2971
		2972	=cut
		2973
		2974	sub parse_random_map_params {
		2975	my ($spec) = @_;
		2976
		2977	my $rmp = { # defaults
		2978	xsize => (cf::rndm 15, 40),
		2979	ysize => (cf::rndm 15, 40),
		2980	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2981	#layout => string,
748	}	2982	};
749	}
750		2983
751	=item $player->ext_reply ($msgid, $msgtype, %msg)	2984	for (split /\n/, $spec) {
		2985	my ($k, $v) = split /\s+/, $_, 2;
752		2986
		2987	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2988	}
		2989
		2990	$rmp
		2991	}
		2992
		2993	sub prepare_random_map {
		2994	my ($exit) = @_;
		2995
		2996	# all this does is basically replace the /! path by
		2997	# a new random map path (?random/...) with a seed
		2998	# that depends on the exit object
		2999
		3000	my $rmp = parse_random_map_params $exit->msg;
		3001
		3002	if ($exit->map) {
		3003	$rmp->{region} = $exit->region->name;
		3004	$rmp->{origin_map} = $exit->map->path;
		3005	$rmp->{origin_x} = $exit->x;
		3006	$rmp->{origin_y} = $exit->y;
		3007
		3008	$exit->map->touch;
		3009	}
		3010
		3011	$rmp->{random_seed} ||= $exit->random_seed;
		3012
		3013	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		3014	my $md5 = Digest::MD5::md5_hex $data;
		3015	my $meta = "$RANDOMDIR/$md5.meta";
		3016
		3017	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		3018	aio_write $fh, 0, (length $data), $data, 0;
		3019	undef $fh;
		3020	aio_rename "$meta~", $meta;
		3021
		3022	my $slaying = "?random/$md5";
		3023
		3024	if ($exit->valid) {
		3025	$exit->slaying ("?random/$md5");
		3026	$exit->msg (undef);
		3027	}
		3028	}
		3029	}
		3030
		3031	sub cf::object::player::enter_exit {
		3032	my ($self, $exit) = @_;
		3033
		3034	return unless $self->type == cf::PLAYER;
		3035
		3036	$self->enter_link;
		3037
		3038	(async {
		3039	$Coro::current->{desc} = "enter_exit";
		3040
		3041	unless (eval {
		3042	$self->deactivate_recursive; # just to be sure
		3043
		3044	my $map = cf::map::normalise $exit->slaying, $exit->map;
		3045	my $x = $exit->stats->hp;
		3046	my $y = $exit->stats->sp;
		3047
		3048	# special map handling
		3049	my $slaying = $exit->slaying;
		3050
		3051	# special map handling
		3052	if ($slaying eq "/!") {
		3053	my $guard = cf::lock_acquire "exit_prepare:$exit";
		3054
		3055	prepare_random_map $exit
		3056	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		3057
		3058	$map = $exit->slaying;
		3059
		3060	} elsif ($slaying eq '!up') {
		3061	$map = $exit->map->tile_path (cf::TILE_UP);
		3062	$x = $exit->x;
		3063	$y = $exit->y;
		3064
		3065	} elsif ($slaying eq '!down') {
		3066	$map = $exit->map->tile_path (cf::TILE_DOWN);
		3067	$x = $exit->x;
		3068	$y = $exit->y;
		3069	}
		3070
		3071	$self->goto ($map, $x, $y);
		3072
		3073	# if exit is damned, update players death & WoR home-position
		3074	$self->contr->savebed ($map, $x, $y)
		3075	if $exit->flag (cf::FLAG_DAMNED);
		3076
		3077	1
		3078	}) {
		3079	$self->message ("Something went wrong deep within the deliantra server. "
		3080	. "I'll try to bring you back to the map you were before. "
		3081	. "Please report this to the dungeon master!",
		3082	cf::NDI_UNIQUE | cf::NDI_RED);
		3083
		3084	error "ERROR in enter_exit: $@";
		3085	$self->leave_link;
		3086	}
		3087	})->prio (1);
		3088	}
		3089
		3090	=head3 cf::client
		3091
		3092	=over 4
		3093
		3094	=item $client->send_big_packet ($pkt)
		3095
		3096	Like C<send_packet>, but tries to compress large packets, and fragments
		3097	them as required.
		3098
		3099	=cut
		3100
		3101	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3102
		3103	sub cf::client::send_big_packet {
		3104	my ($self, $pkt) = @_;
		3105
		3106	# try lzf for large packets
		3107	$pkt = "lzf " . Compress::LZF::compress $pkt
		3108	if 1024 <= length $pkt and $self->{can_lzf};
		3109
		3110	# split very large packets
		3111	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3112	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3113	$pkt = "frag";
		3114	}
		3115
		3116	$self->send_packet ($pkt);
		3117	}
		3118
		3119	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3120
		3121	Send a msg packet to the client, formatting the msg for the client if
		3122	necessary. C<$type> should be a string identifying the type of the
		3123	message, with C<log> being the default. If C<$color> is negative, suppress
		3124	the message unless the client supports the msg packet.
		3125
		3126	=cut
		3127
		3128	# non-persistent channels (usually the info channel)
		3129	our %CHANNEL = (
		3130	"c/motd" => {
		3131	id => "infobox",
		3132	title => "MOTD",
		3133	reply => undef,
		3134	tooltip => "The message of the day",
		3135	},
		3136	"c/identify" => {
		3137	id => "infobox",
		3138	title => "Identify",
		3139	reply => undef,
		3140	tooltip => "Items recently identified",
		3141	},
		3142	"c/examine" => {
		3143	id => "infobox",
		3144	title => "Examine",
		3145	reply => undef,
		3146	tooltip => "Signs and other items you examined",
		3147	},
		3148	"c/shopinfo" => {
		3149	id => "infobox",
		3150	title => "Shop Info",
		3151	reply => undef,
		3152	tooltip => "What your bargaining skill tells you about the shop",
		3153	},
		3154	"c/book" => {
		3155	id => "infobox",
		3156	title => "Book",
		3157	reply => undef,
		3158	tooltip => "The contents of a note or book",
		3159	},
		3160	"c/lookat" => {
		3161	id => "infobox",
		3162	title => "Look",
		3163	reply => undef,
		3164	tooltip => "What you saw there",
		3165	},
		3166	"c/who" => {
		3167	id => "infobox",
		3168	title => "Players",
		3169	reply => undef,
		3170	tooltip => "Shows players who are currently online",
		3171	},
		3172	"c/body" => {
		3173	id => "infobox",
		3174	title => "Body Parts",
		3175	reply => undef,
		3176	tooltip => "Shows which body parts you possess and are available",
		3177	},
		3178	"c/statistics" => {
		3179	id => "infobox",
		3180	title => "Statistics",
		3181	reply => undef,
		3182	tooltip => "Shows your primary statistics",
		3183	},
		3184	"c/skills" => {
		3185	id => "infobox",
		3186	title => "Skills",
		3187	reply => undef,
		3188	tooltip => "Shows your experience per skill and item power",
		3189	},
		3190	"c/shopitems" => {
		3191	id => "infobox",
		3192	title => "Shop Items",
		3193	reply => undef,
		3194	tooltip => "Shows the items currently for sale in this shop",
		3195	},
		3196	"c/resistances" => {
		3197	id => "infobox",
		3198	title => "Resistances",
		3199	reply => undef,
		3200	tooltip => "Shows your resistances",
		3201	},
		3202	"c/pets" => {
		3203	id => "infobox",
		3204	title => "Pets",
		3205	reply => undef,
		3206	tooltip => "Shows information abotu your pets/a specific pet",
		3207	},
		3208	"c/perceiveself" => {
		3209	id => "infobox",
		3210	title => "Perceive Self",
		3211	reply => undef,
		3212	tooltip => "You gained detailed knowledge about yourself",
		3213	},
		3214	"c/uptime" => {
		3215	id => "infobox",
		3216	title => "Uptime",
		3217	reply => undef,
		3218	tooltip => "How long the server has been running since last restart",
		3219	},
		3220	"c/mapinfo" => {
		3221	id => "infobox",
		3222	title => "Map Info",
		3223	reply => undef,
		3224	tooltip => "Information related to the maps",
		3225	},
		3226	"c/party" => {
		3227	id => "party",
		3228	title => "Party",
		3229	reply => "gsay ",
		3230	tooltip => "Messages and chat related to your party",
		3231	},
		3232	"c/death" => {
		3233	id => "death",
		3234	title => "Death",
		3235	reply => undef,
		3236	tooltip => "Reason for and more info about your most recent death",
		3237	},
		3238	"c/fatal" => {
		3239	id => "fatal",
		3240	title => "Fatal Error",
		3241	reply => undef,
		3242	tooltip => "Reason for the server disconnect",
		3243	},
		3244	"c/say" => $SAY_CHANNEL,
		3245	"c/chat" => $CHAT_CHANNEL,
		3246	);
		3247
		3248	sub cf::client::send_msg {
		3249	my ($self, $channel, $msg, $color, @extra) = @_;
		3250
		3251	$msg = $self->pl->expand_cfpod ($msg)
		3252	unless $color & cf::NDI_VERBATIM;
		3253
		3254	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3255
		3256	# check predefined channels, for the benefit of C
		3257	if ($CHANNEL{$channel}) {
		3258	$channel = $CHANNEL{$channel};
		3259
		3260	$self->ext_msg (channel_info => $channel);
		3261	$channel = $channel->{id};
		3262
		3263	} elsif (ref $channel) {
		3264	# send meta info to client, if not yet sent
		3265	unless (exists $self->{channel}{$channel->{id}}) {
		3266	$self->{channel}{$channel->{id}} = $channel;
		3267	$self->ext_msg (channel_info => $channel);
		3268	}
		3269
		3270	$channel = $channel->{id};
		3271	}
		3272
		3273	return unless @extra || length $msg;
		3274
		3275	# default colour, mask it out
		3276	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3277	if $color & cf::NDI_DEF;
		3278
		3279	my $pkt = "msg "
		3280	. $self->{json_coder}->encode (
		3281	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3282	);
		3283
		3284	$self->send_big_packet ($pkt);
		3285	}
		3286
		3287	=item $client->ext_msg ($type, @msg)
		3288
753	Sends an ext reply to the player.	3289	Sends an ext event to the client.
754		3290
755	=cut	3291	=cut
756		3292
757	sub cf::player::ext_reply($$$%) {	3293	sub cf::client::ext_msg($$@) {
758	my ($self, $id, %msg) = @_;	3294	my ($self, $type, @msg) = @_;
759		3295
760	$msg{msgid} = $id;	3296	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
761
762	$self->send ("ext " . to_json \%msg);
763	}	3297	}
764		3298
765	#############################################################################	3299	=item $success = $client->query ($flags, "text", \&cb)
766	# map scripting support	3300
		3301	Queues a query to the client, calling the given callback with
		3302	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3303	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3304
		3305	Queries can fail, so check the return code. Or don't, as queries will
		3306	become reliable at some point in the future.
		3307
		3308	=cut
		3309
		3310	sub cf::client::query {
		3311	my ($self, $flags, $text, $cb) = @_;
		3312
		3313	return unless $self->state == ST_PLAYING
		3314	|| $self->state == ST_SETUP
		3315	|| $self->state == ST_CUSTOM;
		3316
		3317	$self->state (ST_CUSTOM);
		3318
		3319	utf8::encode $text;
		3320	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3321
		3322	$self->send_packet ($self->{query_queue}[0][0])
		3323	if @{ $self->{query_queue} } == 1;
		3324
		3325	1
		3326	}
		3327
		3328	=item $client->update_command_faces
		3329
		3330	=cut
		3331
		3332	our %COMMAND_FACE;
		3333
		3334	sub cf::client::update_command_faces {
		3335	my ($self) = @_;
		3336
		3337	my @faces = grep $_,
		3338	$COMMAND_FACE{preferred},
		3339	$COMMAND_FACE{standard},
		3340	$COMMAND_FACE{skill},
		3341	$self->pl->ob->flag (cf::FLAG_WIZ) ? $COMMAND_FACE{dm} : (),
		3342	$COMMAND_FACE{emote},
		3343	;
		3344
		3345	$self->send_face ($_)
		3346	for @faces;
		3347	$self->flush_fx;
		3348
		3349	$self->ext_msg (command_list => @faces);
		3350	}
		3351
		3352	=item cf::client::set_command_face $type, $commands
		3353
		3354	=cut
		3355
		3356	sub cf::client::set_command_face {
		3357	my ($type, $list) = @_;
		3358
		3359	my $idx = &cf::face::set ( #d# ugly forward reference
		3360	"command_list/$type" => cf::FT_RSRC,
		3361	JSON::XS->new->utf8->encode ([ sort @$list ])
		3362	);
		3363
		3364	$COMMAND_FACE{$type} = $idx;
		3365	}
		3366
		3367	cf::client->attach (
		3368	on_connect => sub {
		3369	my ($ns) = @_;
		3370
		3371	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3372	},
		3373	on_reply => sub {
		3374	my ($ns, $msg) = @_;
		3375
		3376	# this weird shuffling is so that direct followup queries
		3377	# get handled first
		3378	my $queue = delete $ns->{query_queue}
		3379	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3380
		3381	(shift @$queue)->[1]->($msg);
		3382	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3383
		3384	push @{ $ns->{query_queue} }, @$queue;
		3385
		3386	if (@{ $ns->{query_queue} } == @$queue) {
		3387	if (@$queue) {
		3388	$ns->send_packet ($ns->{query_queue}[0][0]);
		3389	} else {
		3390	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3391	}
		3392	}
		3393	},
		3394	on_exticmd => sub {
		3395	my ($ns, $buf) = @_;
		3396
		3397	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3398
		3399	if (ref $msg) {
		3400	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3401
		3402	if (my $cb = $EXTIACMD{$type}) {
		3403	$cb->(
		3404	$ns,
		3405	sub {
		3406	$ns->ext_msg ("reply-$reply", @_)
		3407	if $reply;
		3408	},
		3409	@payload
		3410	);
		3411	} else {
		3412	my @reply;
		3413
		3414	if (my $cb = $EXTICMD{$type}) {
		3415	@reply = $cb->($ns, @payload);
		3416	}
		3417
		3418	$ns->ext_msg ("reply-$reply", @reply)
		3419	if $reply;
		3420	}
		3421	} else {
		3422	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3423	}
		3424
		3425	cf::override;
		3426	},
		3427	);
		3428
		3429	=item $client->async (\&cb)
		3430
		3431	Create a new coroutine, running the specified callback. The coroutine will
		3432	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3433	or loss of connection).
		3434
		3435	=cut
		3436
		3437	sub cf::client::async {
		3438	my ($self, $cb) = @_;
		3439
		3440	my $coro = &Coro::async ($cb);
		3441
		3442	$coro->on_destroy (sub {
		3443	delete $self->{_coro}{$coro+0};
		3444	});
		3445
		3446	$self->{_coro}{$coro+0} = $coro;
		3447
		3448	$coro
		3449	}
		3450
		3451	cf::client->attach (
		3452	on_client_destroy => sub {
		3453	my ($ns) = @_;
		3454
		3455	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3456	},
		3457	);
		3458
		3459	=back
		3460
		3461
		3462	=head2 SAFE SCRIPTING
		3463
		3464	Functions that provide a safe environment to compile and execute
		3465	snippets of perl code without them endangering the safety of the server
		3466	itself. Looping constructs, I/O operators and other built-in functionality
		3467	is not available in the safe scripting environment, and the number of
		3468	functions and methods that can be called is greatly reduced.
		3469
		3470	=cut
767		3471
768	our $safe = new Safe "safe";	3472	our $safe = new Safe "safe";
769	our $safe_hole = new Safe::Hole;	3473	our $safe_hole = new Safe::Hole;
770		3474
771	$SIG{FPE} = 'IGNORE';	3475	$SIG{FPE} = 'IGNORE';
772		3476
773	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3477	$safe->permit_only (Opcode::opset qw(
		3478	:base_core :base_mem :base_orig :base_math :base_loop
		3479	grepstart grepwhile mapstart mapwhile
		3480	sort time
		3481	));
774		3482
775	# here we export the classes and methods available to script code	3483	# here we export the classes and methods available to script code
776		3484
		3485	=pod
		3486
		3487	The following functions and methods are available within a safe environment:
		3488
		3489	cf::object
		3490	contr pay_amount pay_player map x y force_find force_add destroy
		3491	insert remove name archname title slaying race decrease split
		3492	value
		3493
		3494	cf::object::player
		3495	player
		3496
		3497	cf::player
		3498	peaceful
		3499
		3500	cf::map
		3501	trigger
		3502
		3503	=cut
		3504
777	for (	3505	for (
778	["cf::object" => qw(contr pay_amount pay_player)],	3506	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3507	insert remove inv nrof name archname title slaying race
		3508	decrease split destroy change_exp value msg lore send_msg)],
779	["cf::object::player" => qw(player)],	3509	["cf::object::player" => qw(player)],
780	["cf::player" => qw(peaceful)],	3510	["cf::player" => qw(peaceful send_msg)],
		3511	["cf::map" => qw(trigger)],
781	) {	3512	) {
782	no strict 'refs';
783	my ($pkg, @funs) = @$_;	3513	my ($pkg, @funs) = @$_;
784	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3514	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
785	for @funs;	3515	for @funs;
786	}	3516	}
787		3517
		3518	=over 4
		3519
		3520	=item @retval = safe_eval $code, [var => value, ...]
		3521
		3522	Compiled and executes the given perl code snippet. additional var/value
		3523	pairs result in temporary local (my) scalar variables of the given name
		3524	that are available in the code snippet. Example:
		3525
		3526	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3527
		3528	=cut
		3529
788	sub safe_eval($;@) {	3530	sub safe_eval($;@) {
789	my ($code, %vars) = @_;	3531	my ($code, %vars) = @_;
790		3532
791	my $qcode = $code;	3533	my $qcode = $code;
792	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3534	$qcode =~ s/"/‟/g; # not allowed in #line filenames
793	$qcode =~ s/\n/\\n/g;	3535	$qcode =~ s/\n/\\n/g;
794		3536
		3537	%vars = (_dummy => 0) unless %vars;
		3538
		3539	my @res;
795	local $_;	3540	local $_;
796	local @safe::cf::_safe_eval_args = values %vars;
797		3541
798	my $eval =	3542	my $eval =
799	"do {\n"	3543	"do {\n"
800	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3544	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
801	. "#line 0 \"{$qcode}\"\n"	3545	. "#line 0 \"{$qcode}\"\n"
802	. $code	3546	. $code
803	. "\n}"	3547	. "\n}"
804	;	3548	;
805		3549
		3550	if ($CFG{safe_eval}) {
806	sub_generation_inc;	3551	sub_generation_inc;
		3552	local @safe::cf::_safe_eval_args = values %vars;
807	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3553	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
808	sub_generation_inc;	3554	sub_generation_inc;
		3555	} else {
		3556	local @cf::_safe_eval_args = values %vars;
		3557	@res = wantarray ? eval eval : scalar eval $eval;
		3558	}
809		3559
810	if ($@) {	3560	if ($@) {
811	warn "$@";	3561	warn "$@",
812	warn "while executing safe code '$code'\n";	3562	"while executing safe code '$code'\n",
813	warn "with arguments " . (join " ", %vars) . "\n";	3563	"with arguments " . (join " ", %vars) . "\n";
814	}	3564	}
815		3565
816	wantarray ? @res : $res[0]	3566	wantarray ? @res : $res[0]
817	}	3567	}
		3568
		3569	=item cf::register_script_function $function => $cb
		3570
		3571	Register a function that can be called from within map/npc scripts. The
		3572	function should be reasonably secure and should be put into a package name
		3573	like the extension.
		3574
		3575	Example: register a function that gets called whenever a map script calls
		3576	C<rent::overview>, as used by the C<rent> extension.
		3577
		3578	cf::register_script_function "rent::overview" => sub {
		3579	...
		3580	};
		3581
		3582	=cut
818		3583
819	sub register_script_function {	3584	sub register_script_function {
820	my ($fun, $cb) = @_;	3585	my ($fun, $cb) = @_;
821		3586
822	no strict 'refs';	3587	$fun = "safe::$fun" if $CFG{safe_eval};
823	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3588	*$fun = $safe_hole->wrap ($cb);
824	}	3589	}
		3590
		3591	=back
		3592
		3593	=cut
825		3594
826	#############################################################################	3595	#############################################################################
827	# the server's main()	3596	# the server's init and main functions
		3597
		3598	{
		3599	package cf::face;
		3600
		3601	our %HASH; # hash => idx
		3602	our @DATA; # dynamically-created facedata, only faceste 0 used
		3603	our @FOFS; # file offset, if > 0
		3604	our @SIZE; # size of face, in octets
		3605	our @META; # meta hash of face, if any
		3606	our $DATAFH; # facedata filehandle
		3607
		3608	# internal api, not finalised
		3609	sub set {
		3610	my ($name, $type, $data) = @_;
		3611
		3612	my $idx = cf::face::find $name;
		3613
		3614	if ($idx) {
		3615	delete $HASH{cf::face::get_csum $idx};
		3616	} else {
		3617	$idx = cf::face::alloc $name;
		3618	}
		3619
		3620	my $hash = cf::face::mangle_csum Digest::MD5::md5 $data;
		3621
		3622	cf::face::set_type $idx, $type;
		3623	cf::face::set_csum $idx, 0, $hash;
		3624
		3625	# we need to destroy the SV itself, not just modify it, as a running ix
		3626	# might hold a reference to it: "delete" achieves that.
		3627	delete $FOFS[0][$idx];
		3628	delete $DATA[0][$idx];
		3629	$DATA[0][$idx] = $data;
		3630	$SIZE[0][$idx] = length $data;
		3631	delete $META[$idx];
		3632	$HASH{$hash} = $idx;#d#
		3633
		3634	$idx
		3635	}
		3636
		3637	sub _get_data($$$) {
		3638	my ($idx, $set, $cb) = @_;
		3639
		3640	if (defined $DATA[$set][$idx]) {
		3641	$cb->($DATA[$set][$idx]);
		3642	} elsif (my $fofs = $FOFS[$set][$idx]) {
		3643	my $size = $SIZE[$set][$idx];
		3644	my $buf;
		3645	IO::AIO::aio_read $DATAFH, $fofs, $size, $buf, 0, sub {
		3646	if ($_[0] == $size) {
		3647	#cf::debug "read face $idx, $size from $fofs as ", length $buf;#d#
		3648	$cb->($buf);
		3649	} else {
		3650	cf::error "INTERNAL ERROR: unable to read facedata for face $idx#$set ($size, $fofs), ignoring request.";
		3651	}
		3652	};
		3653	} else {
		3654	cf::error "requested facedata for unknown face $idx#$set, ignoring.";
		3655	}
		3656	}
		3657
		3658	# rather ineffient
		3659	sub cf::face::get_data($;$) {
		3660	my ($idx, $set) = @_;
		3661
		3662	_get_data $idx, $set, Coro::rouse_cb;
		3663	Coro::rouse_wait
		3664	}
		3665
		3666	sub cf::face::ix {
		3667	my ($ns, $set, $idx, $pri) = @_;
		3668
		3669	_get_data $idx, $set, sub {
		3670	$ns->ix_send ($idx, $pri, $_[0]);
		3671	};
		3672	}
		3673	}
		3674
		3675	sub load_facedata($) {
		3676	my ($path) = @_;
		3677
		3678	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3679
		3680	trace "loading facedata from $path\n";
		3681
		3682	my $facedata = decode_storable load_file "$path/faceinfo";
		3683
		3684	$facedata->{version} == 2
		3685	or cf::cleanup "$path/faceinfo: version mismatch, cannot proceed.";
		3686
		3687	my $fh = aio_open "$DATADIR/facedata", IO::AIO::O_RDONLY, 0
		3688	or cf::cleanup "$path/facedata: $!, cannot proceed.";
		3689
		3690	get_slot 1, -100, "load_facedata"; # make sure we get a very big slot
		3691
		3692	# BEGIN ATOMIC
		3693	# from here on, everything must be atomic - no thread switch allowed
		3694	my $t1 = EV::time;
		3695
		3696	{
		3697	my $faces = $facedata->{faceinfo};
		3698
		3699	for my $face (sort keys %$faces) {
		3700	my $info = $faces->{$face};
		3701	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3702
		3703	cf::face::set_visibility $idx, $info->{visibility};
		3704	cf::face::set_magicmap $idx, $info->{magicmap};
		3705	cf::face::set_csum $idx, 0, $info->{hash64}; $cf::face::SIZE[0][$idx] = $info->{size64}; $cf::face::FOFS[0][$idx] = $info->{fofs64};
		3706	cf::face::set_csum $idx, 1, $info->{hash32}; $cf::face::SIZE[1][$idx] = $info->{size32}; $cf::face::FOFS[1][$idx] = $info->{fofs32};
		3707	cf::face::set_csum $idx, 2, $info->{glyph}; $cf::face::DATA[2][$idx] = $info->{glyph};
		3708	$cf::face::HASH{$info->{hash64}} = $idx;
		3709	delete $cf::face::META[$idx];
		3710	}
		3711
		3712	while (my ($face, $info) = each %$faces) {
		3713	next unless $info->{smooth};
		3714
		3715	my $idx = cf::face::find $face
		3716	or next;
		3717
		3718	if (my $smooth = cf::face::find $info->{smooth}) {
		3719	cf::face::set_smooth $idx, $smooth;
		3720	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3721	} else {
		3722	error "smooth face '$info->{smooth}' not found for face '$face'";
		3723	}
		3724	}
		3725	}
		3726
		3727	{
		3728	my $anims = $facedata->{animinfo};
		3729
		3730	while (my ($anim, $info) = each %$anims) {
		3731	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3732	}
		3733
		3734	cf::anim::invalidate_all; # d'oh
		3735	}
		3736
		3737	{
		3738	my $res = $facedata->{resource};
		3739
		3740	while (my ($name, $info) = each %$res) {
		3741	if (defined (my $type = $info->{type})) {
		3742	# TODO: different hash - must free and use new index, or cache ixface data queue
		3743	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3744
		3745	cf::face::set_type $idx, $type;
		3746	cf::face::set_csum $idx, 0, $info->{hash};
		3747	$cf::face::SIZE[0][$idx] = $info->{size};
		3748	$cf::face::FOFS[0][$idx] = $info->{fofs};
		3749	$cf::face::META[$idx] = $type & 1 ? undef : $info->{meta}; # preserve meta unless prepended already
		3750	$cf::face::HASH{$info->{hash}} = $idx;
		3751	} else {
		3752	# $RESOURCE{$name} = $info; # unused
		3753	}
		3754	}
		3755	}
		3756
		3757	($fh, $cf::face::DATAFH) = ($cf::face::DATAFH, $fh);
		3758
		3759	# HACK to clear player env face cache, we need some signal framework
		3760	# for this (global event?)
		3761	%ext::player_env::MUSIC_FACE_CACHE = ();
		3762
		3763	# END ATOMIC
		3764
		3765	cf::debug "facedata atomic update time ", EV::time - $t1;
		3766
		3767	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3768
		3769	aio_close $fh if $fh; # close old facedata
		3770
		3771	1
		3772	}
		3773
		3774	register_exticmd fx_want => sub {
		3775	my ($ns, $want) = @_;
		3776
		3777	while (my ($k, $v) = each %$want) {
		3778	$ns->fx_want ($k, $v);
		3779	}
		3780	};
		3781
		3782	sub load_resource_file($) {
		3783	my $guard = lock_acquire "load_resource_file";
		3784
		3785	my $status = load_resource_file_ $_[0];
		3786	get_slot 0.1, 100;
		3787	cf::arch::commit_load;
		3788
		3789	$status
		3790	}
		3791
		3792	sub reload_exp_table {
		3793	_reload_exp_table;
		3794
		3795	cf::face::set
		3796	"res/exp_table" => FT_RSRC,
		3797	JSON::XS->new->utf8->canonical->encode (
		3798	[map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]
		3799	);
		3800	}
		3801
		3802	sub reload_materials {
		3803	_reload_materials;
		3804	}
		3805
		3806	sub reload_regions {
		3807	# HACK to clear player env face cache, we need some signal framework
		3808	# for this (global event?)
		3809	%ext::player_env::MUSIC_FACE_CACHE = ();
		3810
		3811	load_resource_file "$MAPDIR/regions"
		3812	or die "unable to load regions file\n";
		3813
		3814	for (cf::region::list) {
		3815	$_->{match} = qr/$_->{match}/
		3816	if exists $_->{match};
		3817	}
		3818	}
		3819
		3820	sub reload_facedata {
		3821	load_facedata $DATADIR
		3822	or die "unable to load facedata\n";
		3823	}
		3824
		3825	sub reload_archetypes {
		3826	load_resource_file "$DATADIR/archetypes"
		3827	or die "unable to load archetypes\n";
		3828
		3829	cf::face::set
		3830	"res/skill_info" => FT_RSRC,
		3831	JSON::XS->new->utf8->canonical->encode (
		3832	[map [cf::arch::skillvec ($_)->name], 0 .. cf::arch::skillvec_size - 1]
		3833	);
		3834
		3835	cf::face::set
		3836	"res/spell_paths" => FT_RSRC,
		3837	JSON::XS->new->utf8->canonical->encode (
		3838	[map [cf::spellpathnames ($_)], 0 .. NRSPELLPATHS - 1]
		3839	);
		3840
		3841	# command completion
		3842	my @commands;
		3843
		3844	for (0..cf::arch::skillvec_size - 1) {
		3845	my $skill = cf::arch::skillvec $_;
		3846	my $name = $skill->name;
		3847	my $flags = cf::skill_flags $skill->subtype;
		3848
		3849	push @commands, "ready_skill $name" if $flags & (SF_COMBAT | SF_RANGED | SF_GRACE);
		3850	push @commands, "use_skill $name" if $flags & (SF_USE | SF_AUTARK | SF_GRACE);
		3851	}
		3852
		3853	cf::client::set_command_face skill => \@commands;
		3854	}
		3855
		3856	sub reload_treasures {
		3857	load_resource_file "$DATADIR/treasures"
		3858	or die "unable to load treasurelists\n";
		3859	}
		3860
		3861	sub reload_sound {
		3862	trace "loading sound config from $DATADIR/sound\n";
		3863
		3864	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3865
		3866	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3867	my $sound = $soundconf->{compat}[$_]
		3868	or next;
		3869
		3870	my $face = cf::face::find "sound/$sound->[1]";
		3871	cf::sound::set $sound->[0] => $face;
		3872	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3873	}
		3874
		3875	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3876	my $face = cf::face::find "sound/$v";
		3877	cf::sound::set $k => $face;
		3878	}
		3879	}
		3880
		3881	sub reload_resources {
		3882	trace "reloading resource files...\n";
		3883
		3884	reload_materials;
		3885	reload_facedata;
		3886	reload_exp_table;
		3887	reload_sound;
		3888	reload_archetypes;
		3889	reload_regions;
		3890	reload_treasures;
		3891
		3892	trace "finished reloading resource files\n";
		3893	}
		3894
		3895	sub reload_config {
		3896	trace "reloading config file...\n";
		3897
		3898	my $config = load_file "$CONFDIR/config";
		3899	utf8::decode $config;
		3900	*CFG = decode_yaml $config;
		3901
		3902	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3903
		3904	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3905	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3906
		3907	if (exists $CFG{mlockall}) {
		3908	eval {
		3909	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3910	and die "WARNING: m(un)lockall failed: $!\n";
		3911	};
		3912	warn $@ if $@;
		3913	}
		3914	}
		3915
		3916	sub pidfile() {
		3917	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3918	or die "$PIDFILE: $!";
		3919	flock $fh, &Fcntl::LOCK_EX
		3920	or die "$PIDFILE: flock: $!";
		3921	$fh
		3922	}
		3923
		3924	# make sure only one server instance is running at any one time
		3925	sub atomic {
		3926	my $fh = pidfile;
		3927
		3928	my $pid = <$fh>;
		3929	kill 9, $pid if $pid > 0;
		3930
		3931	seek $fh, 0, 0;
		3932	print $fh $$;
		3933	}
		3934
		3935	sub main_loop {
		3936	trace "EV::run starting\n";
		3937	if (1) {
		3938	EV::run;
		3939	}
		3940	trace "EV::run returned\n";
		3941	goto &main_loop unless $REALLY_UNLOOP;
		3942	}
828		3943
829	sub main {	3944	sub main {
830	Event::loop;	3945	cf::init_globals; # initialise logging
		3946
		3947	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3948	LOG llevInfo, "Copyright (C) 2017-2018 Marc Alexander Lehmann / the Deliantra team.";
		3949	LOG llevInfo, "Copyright (C) 2005-2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3950	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3951	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3952
		3953	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3954
		3955	# we must not ever block the main coroutine
		3956	$Coro::idle = sub {
		3957	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3958	(async {
		3959	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3960	EV::run EV::RUN_ONCE;
		3961	})->prio (Coro::PRIO_MAX);
		3962	};
		3963
		3964	evthread_start IO::AIO::poll_fileno;
		3965
		3966	cf::sync_job {
		3967	cf::incloader::init ();
		3968
		3969	db_init;
		3970
		3971	cf::init_anim;
		3972	cf::init_attackmess;
		3973	cf::init_dynamic;
		3974
		3975	cf::load_settings;
		3976
		3977	reload_resources;
		3978	reload_config;
		3979
		3980	cf::init_uuid;
		3981	cf::init_signals;
		3982	cf::init_skills;
		3983
		3984	cf::init_beforeplay;
		3985
		3986	atomic;
		3987
		3988	load_extensions;
		3989
		3990	utime time, time, $RUNTIMEFILE;
		3991
		3992	# no (long-running) fork's whatsoever before this point(!)
		3993	use POSIX ();
		3994	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3995
		3996	cf::_post_init 0;
		3997	};
		3998
		3999	cf::object::thawer::errors_are_fatal 0;
		4000	info "parse errors in files are no longer fatal from this point on.\n";
		4001
		4002	AE::postpone {
		4003	undef &main; # free gobs of memory :)
		4004	};
		4005
		4006	goto &main_loop;
831	}	4007	}
832		4008
833	#############################################################################	4009	#############################################################################
834	# initialisation	4010	# initialisation and cleanup
835		4011
836	register "<global>", __PACKAGE__;	4012	# install some emergency cleanup handlers
837		4013	BEGIN {
838	unshift @INC, $LIBDIR;	4014	our %SIGWATCHER = ();
839		4015	for my $signal (qw(INT HUP TERM)) {
840	load_extensions;	4016	$SIGWATCHER{$signal} = AE::signal $signal, sub {
841		4017	cf::cleanup "SIG$signal";
842	$TICK_WATCHER = Event->timer (	4018	};
843	prio => 1,
844	at => $NEXT_TICK || 1,
845	cb => sub {
846	cf::server_tick; # one server iteration
847
848	my $NOW = Event::time;
849	$NEXT_TICK += $TICK;
850
851	# if we are delayed by four ticks, skip them all
852	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
853
854	$TICK_WATCHER->at ($NEXT_TICK);
855	$TICK_WATCHER->start;
856	},	4019	}
857	);	4020	}
858		4021
859	_reload_2;	4022	sub write_runtime_sync {
		4023	my $t0 = AE::time;
		4024
		4025	# first touch the runtime file to show we are still running:
		4026	# the fsync below can take a very very long time.
		4027
		4028	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		4029
		4030	my $guard = cf::lock_acquire "write_runtime";
		4031
		4032	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		4033	or return;
		4034
		4035	my $value = $cf::RUNTIME + 90 + 10;
		4036	# 10 is the runtime save interval, for a monotonic clock
		4037	# 60 allows for the watchdog to kill the server.
		4038
		4039	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		4040	and return;
		4041
		4042	# always fsync - this file is important
		4043	aio_fsync $fh
		4044	and return;
		4045
		4046	# touch it again to show we are up-to-date
		4047	aio_utime $fh, undef, undef;
		4048
		4049	close $fh
		4050	or return;
		4051
		4052	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		4053	and return;
		4054
		4055	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		4056
		4057	1
		4058	}
		4059
		4060	our $uuid_lock;
		4061	our $uuid_skip;
		4062
		4063	sub write_uuid_sync($) {
		4064	$uuid_skip ||= $_[0];
		4065
		4066	return if $uuid_lock;
		4067	local $uuid_lock = 1;
		4068
		4069	my $uuid = "$LOCALDIR/uuid";
		4070
		4071	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		4072	or return;
		4073
		4074	my $value = uuid_seq uuid_cur;
		4075
		4076	unless ($value) {
		4077	info "cowardly refusing to write zero uuid value!\n";
		4078	return;
		4079	}
		4080
		4081	my $value = uuid_str $value + $uuid_skip;
		4082	$uuid_skip = 0;
		4083
		4084	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		4085	and return;
		4086
		4087	# always fsync - this file is important
		4088	aio_fsync $fh
		4089	and return;
		4090
		4091	close $fh
		4092	or return;
		4093
		4094	aio_rename "$uuid~", $uuid
		4095	and return;
		4096
		4097	trace "uuid file written ($value).\n";
		4098
		4099	1
		4100
		4101	}
		4102
		4103	sub write_uuid($$) {
		4104	my ($skip, $sync) = @_;
		4105
		4106	$sync ? write_uuid_sync $skip
		4107	: async { write_uuid_sync $skip };
		4108	}
		4109
		4110	sub emergency_save() {
		4111	my $freeze_guard = cf::freeze_mainloop;
		4112
		4113	info "emergency_perl_save: enter\n";
		4114
		4115	# this is a trade-off: we want to be very quick here, so
		4116	# save all maps without fsync, and later call a global sync
		4117	# (which in turn might be very very slow)
		4118	local $USE_FSYNC = 0;
		4119
		4120	cf::sync_job {
		4121	cf::write_runtime_sync; # external watchdog should not bark
		4122
		4123	# use a peculiar iteration method to avoid tripping on perl
		4124	# refcount bugs in for. also avoids problems with players
		4125	# and maps saved/destroyed asynchronously.
		4126	info "emergency_perl_save: begin player save\n";
		4127	for my $login (keys %cf::PLAYER) {
		4128	my $pl = $cf::PLAYER{$login} or next;
		4129	$pl->valid or next;
		4130	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		4131	$pl->save;
		4132	}
		4133	info "emergency_perl_save: end player save\n";
		4134
		4135	cf::write_runtime_sync; # external watchdog should not bark
		4136
		4137	info "emergency_perl_save: begin map save\n";
		4138	for my $path (keys %cf::MAP) {
		4139	my $map = $cf::MAP{$path} or next;
		4140	$map->valid or next;
		4141	$map->save;
		4142	}
		4143	info "emergency_perl_save: end map save\n";
		4144
		4145	cf::write_runtime_sync; # external watchdog should not bark
		4146
		4147	info "emergency_perl_save: begin database checkpoint\n";
		4148	BDB::db_env_txn_checkpoint $DB_ENV;
		4149	info "emergency_perl_save: end database checkpoint\n";
		4150
		4151	info "emergency_perl_save: begin write uuid\n";
		4152	write_uuid_sync 1;
		4153	info "emergency_perl_save: end write uuid\n";
		4154
		4155	cf::write_runtime_sync; # external watchdog should not bark
		4156
		4157	trace "emergency_perl_save: syncing database to disk";
		4158	BDB::db_env_txn_checkpoint $DB_ENV;
		4159
		4160	info "emergency_perl_save: starting sync\n";
		4161	IO::AIO::aio_sync sub {
		4162	info "emergency_perl_save: finished sync\n";
		4163	};
		4164
		4165	cf::write_runtime_sync; # external watchdog should not bark
		4166
		4167	trace "emergency_perl_save: flushing outstanding aio requests";
		4168	while (IO::AIO::nreqs || BDB::nreqs) {
		4169	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		4170	}
		4171
		4172	cf::write_runtime_sync; # external watchdog should not bark
		4173	};
		4174
		4175	info "emergency_perl_save: leave\n";
		4176	}
		4177
		4178	sub post_cleanup {
		4179	my ($make_core) = @_;
		4180
		4181	IO::AIO::flush;
		4182
		4183	error Carp::longmess "post_cleanup backtrace"
		4184	if $make_core;
		4185
		4186	my $fh = pidfile;
		4187	unlink $PIDFILE if <$fh> == $$;
		4188	}
		4189
		4190	# a safer delete_package, copied from Symbol
		4191	sub clear_package($) {
		4192	my $pkg = shift;
		4193
		4194	# expand to full symbol table name if needed
		4195	unless ($pkg =~ /^main::.*::$/) {
		4196	$pkg = "main$pkg" if $pkg =~ /^::/;
		4197	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		4198	$pkg .= '::' unless $pkg =~ /::$/;
		4199	}
		4200
		4201	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		4202	my $stem_symtab = *{$stem}{HASH};
		4203
		4204	defined $stem_symtab and exists $stem_symtab->{$leaf}
		4205	or return;
		4206
		4207	# clear all symbols
		4208	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		4209	for my $name (keys %$leaf_symtab) {
		4210	_gv_clear *{"$pkg$name"};
		4211	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		4212	}
		4213	}
		4214
		4215	sub do_reload_perl() {
		4216	# can/must only be called in main
		4217	unless (in_main) {
		4218	error "can only reload from main coroutine";
		4219	return;
		4220	}
		4221
		4222	return if $RELOAD++;
		4223
		4224	my $t1 = AE::time;
		4225
		4226	while ($RELOAD) {
		4227	cf::get_slot 0.1, -1, "reload_perl";
		4228	info "perl_reload: reloading...";
		4229
		4230	trace "perl_reload: entering sync_job";
		4231
		4232	cf::sync_job {
		4233	#cf::emergency_save;
		4234
		4235	trace "perl_reload: cancelling all extension coros";
		4236	$_->cancel for values %EXT_CORO;
		4237	%EXT_CORO = ();
		4238
		4239	trace "perl_reload: removing commands";
		4240	%COMMAND = ();
		4241
		4242	trace "perl_reload: removing ext/exti commands";
		4243	%EXTCMD = ();
		4244	%EXTICMD = ();
		4245
		4246	trace "perl_reload: unloading/nuking all extensions";
		4247	for my $pkg (@EXTS) {
		4248	trace "... unloading $pkg";
		4249
		4250	if (my $cb = $pkg->can ("unload")) {
		4251	eval {
		4252	$cb->($pkg);
		4253	1
		4254	} or error "$pkg unloaded, but with errors: $@";
		4255	}
		4256
		4257	trace "... clearing $pkg";
		4258	clear_package $pkg;
		4259	}
		4260
		4261	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4262	while (my ($k, $v) = each %INC) {
		4263	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4264
		4265	trace "... unloading $k";
		4266	delete $INC{$k};
		4267
		4268	$k =~ s/\.pm$//;
		4269	$k =~ s/\//::/g;
		4270
		4271	if (my $cb = $k->can ("unload_module")) {
		4272	$cb->();
		4273	}
		4274
		4275	clear_package $k;
		4276	}
		4277
		4278	trace "perl_reload: getting rid of safe::, as good as possible";
		4279	clear_package "safe::$_"
		4280	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4281
		4282	trace "perl_reload: unloading cf.pm \"a bit\"";
		4283	delete $INC{"cf.pm"};
		4284	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4285
		4286	# don't, removes xs symbols, too,
		4287	# and global variables created in xs
		4288	#clear_package __PACKAGE__;
		4289
		4290	info "perl_reload: unload completed, starting to reload now";
		4291
		4292	trace "perl_reload: reloading cf.pm";
		4293	require cf;
		4294	cf::_connect_to_perl_1;
		4295
		4296	trace "perl_reload: loading config and database again";
		4297	cf::reload_config;
		4298
		4299	trace "perl_reload: loading extensions";
		4300	cf::load_extensions;
		4301
		4302	if ($REATTACH_ON_RELOAD) {
		4303	trace "perl_reload: reattaching attachments to objects/players";
		4304	_global_reattach; # objects, sockets
		4305	trace "perl_reload: reattaching attachments to maps";
		4306	reattach $_ for values %MAP;
		4307	trace "perl_reload: reattaching attachments to players";
		4308	reattach $_ for values %PLAYER;
		4309	}
		4310
		4311	cf::_post_init 1;
		4312
		4313	trace "perl_reload: leaving sync_job";
		4314
		4315	1
		4316	} or do {
		4317	error $@;
		4318	cf::cleanup "perl_reload: error, exiting.";
		4319	};
		4320
		4321	--$RELOAD;
		4322	}
		4323
		4324	$t1 = AE::time - $t1;
		4325	info "perl_reload: completed in ${t1}s\n";
		4326	};
		4327
		4328	our $RELOAD_WATCHER; # used only during reload
		4329
		4330	sub reload_perl() {
		4331	# doing reload synchronously and two reloads happen back-to-back,
		4332	# coro crashes during coro_state_free->destroy here.
		4333
		4334	$RELOAD_WATCHER ||= cf::async {
		4335	Coro::AIO::aio_wait cache_extensions;
		4336
		4337	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4338	do_reload_perl;
		4339	undef $RELOAD_WATCHER;
		4340	};
		4341	};
		4342	}
		4343
		4344	register_command "reload" => sub {
		4345	my ($who, $arg) = @_;
		4346
		4347	if ($who->flag (FLAG_WIZ)) {
		4348	$who->message ("reloading server.");
		4349	async {
		4350	$Coro::current->{desc} = "perl_reload";
		4351	reload_perl;
		4352	};
		4353	}
		4354	};
		4355
		4356	#############################################################################
		4357
		4358	my $bug_warning = 0;
		4359
		4360	sub wait_for_tick() {
		4361	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4362
		4363	$WAIT_FOR_TICK->wait;
		4364	}
		4365
		4366	sub wait_for_tick_begin() {
		4367	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4368
		4369	my $signal = new Coro::Signal;
		4370	push @WAIT_FOR_TICK_BEGIN, $signal;
		4371	$signal->wait;
		4372	}
		4373
		4374	sub tick {
		4375	if ($Coro::current != $Coro::main) {
		4376	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4377	unless ++$bug_warning > 10;
		4378	return;
		4379	}
		4380
		4381	cf::one_tick; # one server iteration
		4382
		4383	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4384
		4385	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4386	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4387	Coro::async_pool {
		4388	$Coro::current->{desc} = "runtime saver";
		4389	write_runtime_sync
		4390	or error "ERROR: unable to write runtime file: $!";
		4391	};
		4392	}
		4393
		4394	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4395	$sig->send;
		4396	}
		4397	$WAIT_FOR_TICK->broadcast;
		4398
		4399	$LOAD = ($NOW - $TICK_START) / $TICK;
		4400	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4401
		4402	if (0) {
		4403	if ($NEXT_TICK) {
		4404	my $jitter = $TICK_START - $NEXT_TICK;
		4405	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4406	debug "jitter $JITTER\n";#d#
		4407	}
		4408	}
		4409	}
		4410
		4411	{
		4412	# configure BDB
		4413	info "initialising database";
		4414
		4415	BDB::min_parallel 16;
		4416	BDB::max_poll_reqs $TICK * 0.1;
		4417	#$AnyEvent::BDB::WATCHER->priority (1);
		4418
		4419	unless ($DB_ENV) {
		4420	$DB_ENV = BDB::db_env_create;
		4421	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4422	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4423	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4424	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4425	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4426
		4427	cf::sync_job {
		4428	eval {
		4429	BDB::db_env_open
		4430	$DB_ENV,
		4431	$BDBDIR,
		4432	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4433	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4434	0666;
		4435
		4436	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		4437	};
		4438
		4439	cf::cleanup "db_env_open(db): $@" if $@;
		4440	};
		4441	}
		4442
		4443	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		4444	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		4445	};
		4446	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		4447	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		4448	};
		4449	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4450	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4451	};
		4452
		4453	info "database initialised";
		4454	}
		4455
		4456	{
		4457	# configure IO::AIO
		4458
		4459	info "initialising aio";
		4460	IO::AIO::min_parallel 8;
		4461	IO::AIO::max_poll_time $TICK * 0.1;
		4462	undef $AnyEvent::AIO::WATCHER;
		4463	info "aio initialised";
		4464	}
		4465
		4466	our $_log_backtrace;
		4467	our $_log_backtrace_last;
		4468
		4469	sub _log_backtrace {
		4470	my ($msg, @addr) = @_;
		4471
		4472	$msg =~ s/\n$//;
		4473
		4474	if ($_log_backtrace_last eq $msg) {
		4475	LOG llevInfo, "[ABT] $msg\n";
		4476	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4477	# limit the # of concurrent backtraces
		4478	} elsif ($_log_backtrace < 2) {
		4479	$_log_backtrace_last = $msg;
		4480	++$_log_backtrace;
		4481	my $perl_bt = Carp::longmess $msg;
		4482	async {
		4483	$Coro::current->{desc} = "abt $msg";
		4484
		4485	my @bt = fork_call {
		4486	@addr = map { sprintf "%x", $_ } @addr;
		4487	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4488	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4489	or die "addr2line: $!";
		4490
		4491	my @funcs;
		4492	my @res = <$fh>;
		4493	chomp for @res;
		4494	while (@res) {
		4495	my ($func, $line) = splice @res, 0, 2, ();
		4496	push @funcs, "[$func] $line";
		4497	}
		4498
		4499	@funcs
		4500	};
		4501
		4502	LOG llevInfo, "[ABT] $perl_bt\n";
		4503	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4504	LOG llevInfo, "[ABT] $_\n" for @bt;
		4505	--$_log_backtrace;
		4506	};
		4507	} else {
		4508	LOG llevInfo, "[ABT] $msg\n";
		4509	LOG llevInfo, "[ABT] [overload, suppressed]\n";
		4510	}
		4511	}
		4512
		4513	# load additional modules
		4514	require "cf/$_.pm" for @EXTRA_MODULES;
		4515	cf::_connect_to_perl_2;
		4516
		4517	END { cf::emergency_save }
860		4518
861	1	4519	1
862		4520

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