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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.53 by root, Tue Aug 29 13:11:58 2006 UTC vs.
Revision 1.571 by root, Wed May 4 19:04:45 2011 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
		24
		25	use common::sense;
2		26
3	use Symbol;	27	use Symbol;
4	use List::Util;	28	use List::Util;
5	use Storable;	29	use Socket;
		30	use EV;
6	use Opcode;	31	use Opcode;
7	use Safe;	32	use Safe;
8	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
9		36
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Fcntl;
		57	use YAML::XS ();
		58	use IO::AIO ();
10	use Time::HiRes;	59	use Time::HiRes;
11	use Event;	60	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
13		62
14	use strict;	63	AnyEvent::detect;
15		64
16	_reload_1;	65	# configure various modules to our taste
		66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
17		69
		70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
		82
18	our %COMMAND = ();	83	our %COMMAND = ();
		84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
		87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	93	our @EVENT;
20	our %PROP_TYPE;	94	our @REFLECT; # set by XS
21	our %PROP_IDX;	95	our %REFLECT; # set by us
22	our $LIBDIR = maps_directory "perl";
23		96
24	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
25	our $TICK_WATCHER;	98
		99	our $DATADIR = datadir;
		100	our $LIBDIR = "$DATADIR/ext";
		101	our $PODDIR = "$DATADIR/pod";
		102	our $MAPDIR = "$DATADIR/" . mapdir;
		103
		104	our $LOCALDIR = localdir;
		105	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		106	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		107	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		108	our $RANDOMDIR = "$LOCALDIR/random";
		109	our $BDBDIR = "$LOCALDIR/db";
		110	our $PIDFILE = "$LOCALDIR/pid";
		111	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		112
		113	our %RESOURCE; # unused
		114
		115	our $OUTPUT_RATE_MIN = 3000;
		116	our $OUTPUT_RATE_MAX = 1000000;
		117
		118	our $MAX_LINKS = 32; # how many chained exits to follow
		119	our $VERBOSE_IO = 1;
		120
		121	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		122	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	123	our $NEXT_TICK;
		124	our $USE_FSYNC = 1; # use fsync to write maps - default on
27		125
28	BEGIN {	126	our $BDB_DEADLOCK_WATCHER;
29	*CORE::GLOBAL::warn = sub {	127	our $BDB_CHECKPOINT_WATCHER;
		128	our $BDB_TRICKLE_WATCHER;
		129	our $DB_ENV;
		130
		131	our @EXTRA_MODULES = qw(pod match mapscript incloader);
		132
		133	our %CFG;
		134
		135	our $UPTIME; $UPTIME ||= time;
		136	our $RUNTIME = 0;
		137	our $SERVER_TICK = 0;
		138	our $NOW;
		139
		140	our (%PLAYER, %PLAYER_LOADING); # all users
		141	our (%MAP, %MAP_LOADING ); # all maps
		142	our $LINK_MAP; # the special {link} map, which is always available
		143
		144	# used to convert map paths into valid unix filenames by replacing / by ∕
		145	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		146
		147	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		148	our $LOADAVG; # same thing, but with alpha-smoothing
		149	our $JITTER; # average jitter
		150	our $TICK_START; # for load detecting purposes
		151
		152	our @POST_INIT;
		153
		154	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		155	our $REALLY_UNLOOP; # never set to true, please :)
		156
		157	our $WAIT_FOR_TICK = new Coro::Signal;
		158	our @WAIT_FOR_TICK_BEGIN;
		159
		160	binmode STDOUT;
		161	binmode STDERR;
		162
		163	# read virtual server time, if available
		164	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		165	open my $fh, "<", $RUNTIMEFILE
		166	or die "unable to read $RUNTIMEFILE file: $!";
		167	$RUNTIME = <$fh> + 0.;
		168	}
		169
		170	eval "sub TICK() { $TICK } 1" or die;
		171
		172	mkdir $_
		173	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		174
		175	our $EMERGENCY_POSITION;
		176
		177	sub cf::map::normalise;
		178
		179	sub in_main() {
		180	$Coro::current == $Coro::main
		181	}
		182
		183	#############################################################################
		184
		185	%REFLECT = ();
		186	for (@REFLECT) {
		187	my $reflect = JSON::XS::decode_json $_;
		188	$REFLECT{$reflect->{class}} = $reflect;
		189	}
		190
		191	# this is decidedly evil
		192	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		193
		194	#############################################################################
		195
		196	=head2 GLOBAL VARIABLES
		197
		198	=over 4
		199
		200	=item $cf::UPTIME
		201
		202	The timestamp of the server start (so not actually an "uptime").
		203
		204	=item $cf::SERVER_TICK
		205
		206	An unsigned integer that starts at zero when the server is started and is
		207	incremented on every tick.
		208
		209	=item $cf::NOW
		210
		211	The (real) time of the last (current) server tick - updated before and
		212	after tick processing, so this is useful only as a rough "what time is it
		213	now" estimate.
		214
		215	=item $cf::TICK
		216
		217	The interval between each server tick, in seconds.
		218
		219	=item $cf::RUNTIME
		220
		221	The time this server has run, starts at 0 and is increased by $cf::TICK on
		222	every server tick.
		223
		224	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		225	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		226	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		227
		228	Various directories - "/etc", read-only install directory, perl-library
		229	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		230	unique-items directory, player file directory, random maps directory and
		231	database environment.
		232
		233	=item $cf::LOADAVG
		234
		235	The current CPU load on the server (alpha-smoothed), as a value between 0
		236	(none) and 1 (overloaded), indicating how much time is spent on processing
		237	objects per tick. Healthy values are < 0.5.
		238
		239	=item $cf::LOAD
		240
		241	The raw value load value from the last tick.
		242
		243	=item %cf::CFG
		244
		245	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		246	from wherever your confdir points to.
		247
		248	=item cf::wait_for_tick, cf::wait_for_tick_begin
		249
		250	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		251	returns directly I<after> the tick processing (and consequently, can only wake one thread
		252	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		253
		254	Note that cf::Wait_for_tick will immediately return when the server is not
		255	ticking, making it suitable for small pauses in threads that need to run
		256	when the server is paused. If that is not applicable (i.e. you I<really>
		257	want to wait, use C<$cf::WAIT_FOR_TICK>).
		258
		259	=item $cf::WAIT_FOR_TICK
		260
		261	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		262	variable contains a L<Coro::Signal> that is broadcats after every server
		263	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		264	next server tick.
		265
		266	=cut
		267
		268	sub wait_for_tick();
		269	sub wait_for_tick_begin();
		270
		271	=item @cf::INVOKE_RESULTS
		272
		273	This array contains the results of the last C<invoke ()> call. When
		274	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		275	that call.
		276
		277	=item %cf::REFLECT
		278
		279	Contains, for each (C++) class name, a hash reference with information
		280	about object members (methods, scalars, arrays and flags) and other
		281	metadata, which is useful for introspection.
		282
		283	=back
		284
		285	=cut
		286
		287	sub error(@) { LOG llevError, join "", @_ }
		288	sub warn (@) { LOG llevWarn , join "", @_ }
		289	sub info (@) { LOG llevInfo , join "", @_ }
		290	sub debug(@) { LOG llevDebug, join "", @_ }
		291	sub trace(@) { LOG llevTrace, join "", @_ }
		292
		293	$Coro::State::WARNHOOK = sub {
30	my $msg = join "", @_;	294	my $msg = join "", @_;
		295
31	$msg .= "\n"	296	$msg .= "\n"
32	unless $msg =~ /\n$/;	297	unless $msg =~ /\n$/;
33		298
34	print STDERR "cfperl: $msg";	299	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
35	LOG llevError, "cfperl: $msg";
36	};
37	}
38		300
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	301	LOG llevWarn, $msg;
		302	};
40		303
41	# generate property mutators	304	$Coro::State::DIEHOOK = sub {
42	sub prop_gen {	305	return unless $^S eq 0; # "eq", not "=="
43	my ($prefix, $class) = @_;
44		306
45	no strict 'refs';	307	error Carp::longmess $_[0];
46		308
47	for my $prop (keys %PROP_TYPE) {	309	if (in_main) {#d#
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	310	error "DIEHOOK called in main context, Coro bug?\n";#d#
49	my $sub = lc $1;	311	return;#d#
		312	}#d#
50		313
51	my $type = $PROP_TYPE{$prop};	314	# kill coroutine otherwise
52	my $idx = $PROP_IDX {$prop};	315	Coro::terminate
		316	};
53		317
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	318	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	319	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
56	};	320	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
57		321	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
58	*{"$class\::set_$sub"} = sub {	322	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
59	$_[0]->set_property ($type, $idx, $_[1]);	323	@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';	324	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		325
75	# we bless all objects into (empty) derived classes to force a method lookup	326	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	327	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	328	for my $pkg (qw(
78	no strict 'refs';	329	cf::global cf::attachable
		330	cf::object cf::object::player
		331	cf::client cf::player
		332	cf::arch cf::living
		333	cf::map cf::mapspace
		334	cf::party cf::region
		335	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	336	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	337	}
81		338
82	$Event::DIED = sub {	339	$EV::DIED = sub {
83	warn "error in event callback: @_";	340	Carp::cluck "error in event callback: @_";
84	};	341	};
85		342
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	343	#############################################################################
93	# utility functions
94		344
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	345	sub fork_call(&@);
96		346	sub get_slot($;$$);
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		347
107	#############################################################################	348	#############################################################################
108	# "new" plug-in system
109		349
110	=item $object->attach ($attachment, key => $value...)	350	=head2 UTILITY FUNCTIONS
111		351
112	=item $object->detach ($attachment)	352	=over 4
113		353
114	Attach/detach a pre-registered attachment to an object.	354	=item dumpval $ref
115		355
116	=item $player->attach ($attachment, key => $value...)	356	=cut
117		357
118	=item $player->detach ($attachment)	358	sub dumpval {
		359	eval {
		360	local $SIG{__DIE__};
		361	my $d;
		362	if (1) {
		363	$d = new Data::Dumper([$_[0]], ["*var"]);
		364	$d->Terse(1);
		365	$d->Indent(2);
		366	$d->Quotekeys(0);
		367	$d->Useqq(1);
		368	#$d->Bless(...);
		369	$d->Seen($_[1]) if @_ > 1;
		370	$d = $d->Dump();
		371	}
		372	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		373	$d
		374	} || "[unable to dump $_[0]: '$@']";
		375	}
119		376
120	Attach/detach a pre-registered attachment to a player.	377	=item $scalar = load_file $path
121		378
		379	Loads the given file from path and returns its contents. Croaks on error
		380	and can block.
		381
		382	=cut
		383
		384	sub load_file($) {
		385	0 <= aio_load $_[0], my $data
		386	or Carp::croak "$_[0]: $!";
		387
		388	$data
		389	}
		390
		391	=item $ref = cf::decode_json $json
		392
		393	Converts a JSON string into the corresponding perl data structure.
		394
		395	=item $json = cf::encode_json $ref
		396
		397	Converts a perl data structure into its JSON representation.
		398
		399	=cut
		400
		401	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		402
		403	sub encode_json($) { $json_coder->encode ($_[0]) }
		404	sub decode_json($) { $json_coder->decode ($_[0]) }
		405
		406	=item $ref = cf::decode_storable $scalar
		407
		408	Same as Coro::Storable::thaw, so blocks.
		409
		410	=cut
		411
		412	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		413
		414	=item $ref = cf::decode_yaml $scalar
		415
		416	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		417
		418	=cut
		419
		420	sub decode_yaml($) {
		421	fork_call { YAML::XS::Load $_[0] } @_
		422	}
		423
		424	=item $scalar = cf::unlzf $scalar
		425
		426	Same as Compress::LZF::compress, but takes server ticks into account, so
		427	blocks.
		428
		429	=cut
		430
		431	sub unlzf($) {
		432	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		433	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		434	Compress::LZF::decompress $_[0]
		435	}
		436
		437	=item cf::post_init { BLOCK }
		438
		439	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		440	but I<before> the server starts ticking again.
		441
		442	The codeblock will have a single boolean argument to indicate whether this
		443	is a reload or not.
		444
		445	=cut
		446
		447	sub post_init(&) {
		448	push @POST_INIT, shift;
		449	}
		450
		451	sub _post_init {
		452	trace "running post_init jobs";
		453
		454	# run them in parallel...
		455
		456	my @join;
		457
		458	while () {
		459	push @join, map &Coro::async ($_, 0), @POST_INIT;
		460	@POST_INIT = ();
		461
		462	@join or last;
		463
		464	(pop @join)->join;
		465	}
		466	}
		467
		468	=item cf::lock_wait $string
		469
		470	Wait until the given lock is available. See cf::lock_acquire.
		471
		472	=item my $lock = cf::lock_acquire $string
		473
		474	Wait until the given lock is available and then acquires it and returns
		475	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		476	for example when the coroutine gets canceled), the lock is automatically
		477	returned.
		478
		479	Locks are *not* recursive, locking from the same coro twice results in a
		480	deadlocked coro.
		481
		482	Lock names should begin with a unique identifier (for example, cf::map::find
		483	uses map_find and cf::map::load uses map_load).
		484
		485	=item $locked = cf::lock_active $string
		486
		487	Return true if the lock is currently active, i.e. somebody has locked it.
		488
		489	=cut
		490
		491	our $LOCKS = new Coro::SemaphoreSet;
		492
		493	sub lock_wait($) {
		494	$LOCKS->wait ($_[0]);
		495	}
		496
		497	sub lock_acquire($) {
		498	$LOCKS->guard ($_[0])
		499	}
		500
		501	sub lock_active($) {
		502	$LOCKS->count ($_[0]) < 1
		503	}
		504
		505	sub freeze_mainloop {
		506	tick_inhibit_inc;
		507
		508	&Guard::guard (\&tick_inhibit_dec);
		509	}
		510
		511	=item cf::periodic $interval, $cb
		512
		513	Like EV::periodic, but randomly selects a starting point so that the actions
		514	get spread over time.
		515
		516	=cut
		517
		518	sub periodic($$) {
		519	my ($interval, $cb) = @_;
		520
		521	my $start = rand List::Util::min 180, $interval;
		522
		523	EV::periodic $start, $interval, 0, $cb
		524	}
		525
		526	=item cf::get_slot $time[, $priority[, $name]]
		527
		528	Allocate $time seconds of blocking CPU time at priority C<$priority>
		529	(default: 0): This call blocks and returns only when you have at least
		530	C<$time> seconds of cpu time till the next tick. The slot is only valid
		531	till the next cede.
		532
		533	Background jobs should use a priority les than zero, interactive jobs
		534	should use 100 or more.
		535
		536	The optional C<$name> can be used to identify the job to run. It might be
		537	used for statistical purposes and should identify the same time-class.
		538
		539	Useful for short background jobs.
		540
		541	=cut
		542
		543	our @SLOT_QUEUE;
		544	our $SLOT_QUEUE;
		545	our $SLOT_DECAY = 0.9;
		546
		547	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		548	$SLOT_QUEUE = Coro::async {
		549	$Coro::current->desc ("timeslot manager");
		550
		551	my $signal = new Coro::Signal;
		552	my $busy;
		553
		554	while () {
		555	next_job:
		556
		557	my $avail = cf::till_tick;
		558
		559	for (0 .. $#SLOT_QUEUE) {
		560	if ($SLOT_QUEUE[$_][0] <= $avail) {
		561	$busy = 0;
		562	my $job = splice @SLOT_QUEUE, $_, 1, ();
		563	$job->[2]->send;
		564	Coro::cede;
		565	goto next_job;
		566	} else {
		567	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		568	}
		569	}
		570
		571	if (@SLOT_QUEUE) {
		572	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		573	$WAIT_FOR_TICK->wait;
		574	} else {
		575	$busy = 0;
		576	Coro::schedule;
		577	}
		578	}
		579	};
		580
		581	sub get_slot($;$$) {
		582	return if tick_inhibit || $Coro::current == $Coro::main;
		583
		584	my ($time, $pri, $name) = @_;
		585
		586	$time = clamp $time, 0.01, $TICK * .6;
		587
		588	my $sig = new Coro::Signal;
		589
		590	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		591	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		592	$SLOT_QUEUE->ready;
		593	$sig->wait;
		594	}
		595
		596	=item cf::async { BLOCK }
		597
		598	Currently the same as Coro::async_pool, meaning you cannot use
		599	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		600	thing you are allowed to do is call C<prio> on it.
		601
		602	=cut
		603
		604	BEGIN { *async = \&Coro::async_pool }
		605
		606	=item cf::sync_job { BLOCK }
		607
		608	The design of Deliantra requires that the main coroutine ($Coro::main)
		609	is always able to handle events or runnable, as Deliantra is only
		610	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		611	acceptable.
		612
		613	If it must be done, put the blocking parts into C<sync_job>. This will run
		614	the given BLOCK in another coroutine while waiting for the result. The
		615	server will be frozen during this time, so the block should either finish
		616	fast or be very important.
		617
		618	=cut
		619
		620	sub sync_job(&) {
		621	my ($job) = @_;
		622
		623	if (in_main) {
		624	my $time = AE::time;
		625
		626	# this is the main coro, too bad, we have to block
		627	# till the operation succeeds, freezing the server :/
		628
		629	#LOG llevError, Carp::longmess "sync job";#d#
		630
		631	my $freeze_guard = freeze_mainloop;
		632
		633	my $busy = 1;
		634	my @res;
		635
		636	(async {
		637	$Coro::current->desc ("sync job coro");
		638	@res = eval { $job->() };
		639	error $@ if $@;
		640	undef $busy;
		641	})->prio (Coro::PRIO_MAX);
		642
		643	while ($busy) {
		644	if (Coro::nready) {
		645	Coro::cede_notself;
		646	} else {
		647	EV::loop EV::LOOP_ONESHOT;
		648	}
		649	}
		650
		651	my $time = AE::time - $time;
		652
		653	$TICK_START += $time; # do not account sync jobs to server load
		654
		655	wantarray ? @res : $res[0]
		656	} else {
		657	# we are in another coroutine, how wonderful, everything just works
		658
		659	$job->()
		660	}
		661	}
		662
		663	=item $coro = cf::async_ext { BLOCK }
		664
		665	Like async, but this coro is automatically being canceled when the
		666	extension calling this is being unloaded.
		667
		668	=cut
		669
		670	sub async_ext(&) {
		671	my $cb = shift;
		672
		673	my $coro = &Coro::async ($cb);
		674
		675	$coro->on_destroy (sub {
		676	delete $EXT_CORO{$coro+0};
		677	});
		678	$EXT_CORO{$coro+0} = $coro;
		679
		680	$coro
		681	}
		682
		683	=item fork_call { }, @args
		684
		685	Executes the given code block with the given arguments in a seperate
		686	process, returning the results. Everything must be serialisable with
		687	Coro::Storable. May, of course, block. Note that the executed sub may
		688	never block itself or use any form of event handling.
		689
		690	=cut
		691
		692	sub post_fork {
		693	reset_signals;
		694	}
		695
		696	sub fork_call(&@) {
		697	my ($cb, @args) = @_;
		698
		699	# we seemingly have to make a local copy of the whole thing,
		700	# otherwise perl prematurely frees the stuff :/
		701	# TODO: investigate and fix (likely this will be rather laborious)
		702
		703	my @res = Coro::Util::fork_eval {
		704	cf::post_fork;
		705	&$cb
		706	} @args;
		707
		708	wantarray ? @res : $res[-1]
		709	}
		710
		711	sub objinfo {
		712	(
		713	"counter value" => cf::object::object_count,
		714	"objects created" => cf::object::create_count,
		715	"objects destroyed" => cf::object::destroy_count,
		716	"freelist size" => cf::object::free_count,
		717	"allocated objects" => cf::object::objects_size,
		718	"active objects" => cf::object::actives_size,
		719	)
		720	}
		721
		722	=item $coin = coin_from_name $name
		723
		724	=cut
		725
		726	our %coin_alias = (
		727	"silver" => "silvercoin",
		728	"silvercoin" => "silvercoin",
		729	"silvercoins" => "silvercoin",
		730	"gold" => "goldcoin",
		731	"goldcoin" => "goldcoin",
		732	"goldcoins" => "goldcoin",
		733	"platinum" => "platinacoin",
		734	"platinumcoin" => "platinacoin",
		735	"platinumcoins" => "platinacoin",
		736	"platina" => "platinacoin",
		737	"platinacoin" => "platinacoin",
		738	"platinacoins" => "platinacoin",
		739	"royalty" => "royalty",
		740	"royalties" => "royalty",
		741	);
		742
		743	sub coin_from_name($) {
		744	$coin_alias{$_[0]}
		745	? cf::arch::find $coin_alias{$_[0]}
		746	: undef
		747	}
		748
		749	=item $value = cf::db_get $family => $key
		750
		751	Returns a single value from the environment database.
		752
		753	=item cf::db_put $family => $key => $value
		754
		755	Stores the given C<$value> in the family. It can currently store binary
		756	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		757
		758	=item $db = cf::db_table "name"
		759
		760	Create and/or open a new database table. The string must not be "db" and must be unique
		761	within each server.
		762
		763	=cut
		764
		765	sub db_table($) {
		766	cf::error "db_get called from main context"
		767	if $Coro::current == $Coro::main;
		768
		769	my ($name) = @_;
		770	my $db = BDB::db_create $DB_ENV;
		771
		772	eval {
		773	$db->set_flags (BDB::CHKSUM);
		774
		775	utf8::encode $name;
		776	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		777	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		778	cf::cleanup "db_open(db): $!" if $!;
		779	};
		780	cf::cleanup "db_open(db): $@" if $@;
		781
		782	$db
		783	}
		784
		785	our $DB;
		786
		787	sub db_init {
		788	$DB ||= db_table "db";
		789	}
		790
		791	sub db_get($$) {
		792	my $key = "$_[0]/$_[1]";
		793
		794	cf::error "db_get called from main context"
		795	if $Coro::current == $Coro::main;
		796
		797	BDB::db_get $DB, undef, $key, my $data;
		798
		799	$! ? ()
		800	: $data
		801	}
		802
		803	sub db_put($$$) {
		804	BDB::dbreq_pri 4;
		805	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		806	}
		807
		808	=item cf::cache $id => [$paths...], $processversion => $process
		809
		810	Generic caching function that returns the value of the resource $id,
		811	caching and regenerating as required.
		812
		813	This function can block.
		814
		815	=cut
		816
		817	sub cache {
		818	my ($id, $src, $processversion, $process) = @_;
		819
		820	my $meta =
		821	join "\x00",
		822	$processversion,
		823	map {
		824	aio_stat $_
		825	and Carp::croak "$_: $!";
		826
		827	($_, (stat _)[7,9])
		828	} @$src;
		829
		830	my $dbmeta = db_get cache => "$id/meta";
		831	if ($dbmeta ne $meta) {
		832	# changed, we may need to process
		833
		834	my @data;
		835	my $md5;
		836
		837	for (0 .. $#$src) {
		838	$data[$_] = load_file $src->[$_];
		839	}
		840
		841	# if processing is expensive, check
		842	# checksum first
		843	if (1) {
		844	$md5 =
		845	join "\x00",
		846	$processversion,
		847	map {
		848	cf::cede_to_tick;
		849	($src->[$_], Digest::MD5::md5_hex $data[$_])
		850	} 0.. $#$src;
		851
		852
		853	my $dbmd5 = db_get cache => "$id/md5";
		854	if ($dbmd5 eq $md5) {
		855	db_put cache => "$id/meta", $meta;
		856
		857	return db_get cache => "$id/data";
		858	}
		859	}
		860
		861	my $t1 = Time::HiRes::time;
		862	my $data = $process->(\@data);
		863	my $t2 = Time::HiRes::time;
		864
		865	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		866
		867	db_put cache => "$id/data", $data;
		868	db_put cache => "$id/md5" , $md5;
		869	db_put cache => "$id/meta", $meta;
		870
		871	return $data;
		872	}
		873
		874	db_get cache => "$id/data"
		875	}
		876
		877	=item cf::datalog type => key => value, ...
		878
		879	Log a datalog packet of the given type with the given key-value pairs.
		880
		881	=cut
		882
		883	sub datalog($@) {
		884	my ($type, %kv) = @_;
		885	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		886	}
		887
		888	=back
		889
		890	=cut
		891
		892	#############################################################################
		893
		894	=head2 ATTACHABLE OBJECTS
		895
		896	Many objects in deliantra are so-called attachable objects. That means you can
		897	attach callbacks/event handlers (a collection of which is called an "attachment")
		898	to it. All such attachable objects support the following methods.
		899
		900	In the following description, CLASS can be any of C<global>, C<object>
		901	C<player>, C<client> or C<map> (i.e. the attachable objects in
		902	Deliantra).
		903
		904	=over 4
		905
122	=item $map->attach ($attachment, key => $value...)	906	=item $attachable->attach ($attachment, key => $value...)
123		907
124	=item $map->detach ($attachment)	908	=item $attachable->detach ($attachment)
125		909
126	Attach/detach a pre-registered attachment to a map.	910	Attach/detach a pre-registered attachment to a specific object and give it
		911	the specified key/value pairs as arguments.
127		912
128	=item cf::attach_global ...	913	Example, attach a minesweeper attachment to the given object, making it a
		914	10x10 minesweeper game:
129		915
130	Attach handlers for global events.	916	$obj->attach (minesweeper => width => 10, height => 10);
131		917
132	This and all following C<attach_*>-functions expect any number of the	918	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	919
		920	Checks wether the named attachment is currently attached to the object.
		921
		922	=item cf::CLASS->attach ...
		923
		924	=item cf::CLASS->detach ...
		925
		926	Define an anonymous attachment and attach it to all objects of the given
		927	CLASS. See the next function for an explanation of its arguments.
		928
		929	You can attach to global events by using the C<cf::global> class.
		930
		931	Example, log all player logins:
		932
		933	cf::player->attach (
		934	on_login => sub {
		935	my ($pl) = @_;
		936	...
		937	},
		938	);
		939
		940	Example, attach to the jeweler skill:
		941
		942	cf::object->attach (
		943	type => cf::SKILL,
		944	subtype => cf::SK_JEWELER,
		945	on_use_skill => sub {
		946	my ($sk, $ob, $part, $dir, $msg) = @_;
		947	...
		948	},
		949	);
		950
		951	=item cf::CLASS::attachment $name, ...
		952
		953	Register an attachment by C<$name> through which attachable objects of the
		954	given CLASS can refer to this attachment.
		955
		956	Some classes such as deliantra maps and objects can specify attachments
		957	that are attached at load/instantiate time, thus the need for a name.
		958
		959	These calls expect any number of the following handler/hook descriptions:
134		960
135	=over 4	961	=over 4
136		962
137	=item prio => $number	963	=item prio => $number
138		964
…		…
140	by another C<prio> setting). Lower priority handlers get executed	966	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	967	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	968	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	969	unless you know what you are doing.
144		970
		971	=item type => $type
		972
		973	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		974	given type of objects only (the additional parameter C<subtype> can be
		975	used to further limit to the given subtype).
		976
145	=item on_I<event> => \&cb	977	=item on_I<event> => \&cb
146		978
147	Call the given code reference whenever the named event happens (event is	979	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	980	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	981	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	990	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	991	object/class are recognised.
160		992
161	=back	993	=back
162		994
163	=item cf::attach_to_type $object_type, $subtype, ...	995	Example, define an attachment called "sockpuppet" that calls the given
		996	event handler when a monster attacks:
164		997
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	998	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	999	on_skill_attack => sub {
167	type.	1000	my ($self, $victim) = @_;
		1001	...
		1002	}
		1003	}
168		1004
169	=item cf::attach_to_objects ...	1005	=item $attachable->valid
170		1006
171	Attach handlers to all objects. Do not use this except for debugging or	1007	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	1008	C-level object still exists. If you try to access an object that has no
173	the game.	1009	valid C counterpart anymore you get an exception at runtime. This method
174		1010	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	1011	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		1012
193	=cut	1013	=cut
194		1014
195	# the following variables are defined in .xs and must not be re-created	1015	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	1016	our @CB_GLOBAL = (); # registry for all global events
		1017	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	1018	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	1019	our @CB_PLAYER = ();
		1020	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	1021	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	1022	our @CB_MAP = ();
201		1023
202	my %attachment;	1024	my %attachment;
203		1025
		1026	sub cf::attachable::thawer_merge {
		1027	# simply override everything except _meta
		1028	local $_[0]{_meta};
		1029	%{$_[0]} = %{$_[1]};
		1030	}
		1031
204	sub _attach_cb($\%$$$) {	1032	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	1033	my ($registry, $event, $prio, $cb) = @_;
206		1034
207	use sort 'stable';	1035	use sort 'stable';
208		1036
209	$cb = [$prio, $cb];	1037	$cb = [$prio, $cb];
210		1038
211	@{$registry->[$event]} = sort	1039	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	1040	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	1041	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	1042	}
		1043
		1044	# hack
		1045	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		1046
218	# attach handles attaching event callbacks	1047	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	1048	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	1049	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	1050	sub _attach {
222	my ($registry, $klass, @arg) = @_;	1051	my ($registry, $klass, @arg) = @_;
223		1052
		1053	my $object_type;
224	my $prio = 0;	1054	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	1055	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1056
		1057	#TODO: get rid of this hack
		1058	if ($attachable_klass{$klass}) {
		1059	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1060	}
232		1061
233	while (@arg) {	1062	while (@arg) {
234	my $type = shift @arg;	1063	my $type = shift @arg;
235		1064
236	if ($type eq "prio") {	1065	if ($type eq "prio") {
237	$prio = shift @arg;	1066	$prio = shift @arg;
238		1067
		1068	} elsif ($type eq "type") {
		1069	$object_type = shift @arg;
		1070	$registry = $CB_TYPE[$object_type] ||= [];
		1071
		1072	} elsif ($type eq "subtype") {
		1073	defined $object_type or Carp::croak "subtype specified without type";
		1074	my $object_subtype = shift @arg;
		1075	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1076
239	} elsif ($type eq "package") {	1077	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	1078	my $pkg = shift @arg;
241		1079
242	while (my ($name, $id) = each %cb_id) {	1080	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	1081	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	1082	_attach_cb $registry, $id, $prio, $cb;
245	}	1083	}
246	}	1084	}
247		1085
248	} elsif (exists $cb_id{$type}) {	1086	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	1087	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		1088
251	} elsif (ref $type) {	1089	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	1090	error "attaching objects not supported, ignoring.\n";
253		1091
254	} else {	1092	} else {
255	shift @arg;	1093	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	1094	error "attach argument '$type' not supported, ignoring.\n";
257	}	1095	}
258	}	1096	}
259
260	\%undo
261	}	1097	}
262		1098
263	sub _attach_attachment {	1099	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	1100	my ($obj, $name, %arg) = @_;
265		1101
266	my $res;	1102	return if exists $obj->{_attachment}{$name};
267		1103
268	if (my $attach = $attachment{$name}) {	1104	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	1105	my $registry = $obj->registry;
270		1106
271	for (@$attach) {	1107	for (@$attach) {
272	my ($klass, @attach) = @$_;	1108	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	1109	_attach $registry, $klass, @attach;
274	}	1110	}
275		1111
276	$obj->{$name} = \%arg;	1112	$obj->{$name} = \%arg;
277	} else {	1113	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	1114	info "object uses attachment '$name' which is not available, postponing.\n";
279	}	1115	}
280		1116
281	$obj->{_attachment}{$name} = undef;	1117	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	1118	}
286		1119
287	sub cf::object::attach {	1120	sub cf::attachable::attach {
288	my ($obj, $name, %arg) = @_;	1121	if (ref $_[0]) {
		1122	_object_attach @_;
		1123	} else {
		1124	_attach shift->_attach_registry, @_;
		1125	}
		1126	_recalc_want;
		1127	};
289		1128
290	_attach_attachment $obj, $name, %arg;	1129	# all those should be optimised
291	}
292
293	sub cf::player::attach {
294	my ($obj, $name, %arg) = @_;
295
296	_attach_attachment $obj, $name, %arg;
297	}
298
299	sub cf::map::attach {
300	my ($obj, $name, %arg) = @_;
301
302	_attach_attachment $obj, $name, %arg;
303	}
304
305	sub cf::object::detach {	1130	sub cf::attachable::detach {
306	my ($obj, $name) = @_;	1131	my ($obj, $name) = @_;
307	die;#d#	1132
308	}	1133	if (ref $obj) {
309	sub cf::player::detach {	1134	delete $obj->{_attachment}{$name};
		1135	reattach ($obj);
		1136	} else {
		1137	Carp::croak "cannot, currently, detach class attachments";
		1138	}
		1139	_recalc_want;
		1140	};
		1141
		1142	sub cf::attachable::attached {
310	my ($obj, $name) = @_;	1143	my ($obj, $name) = @_;
311	die;#d#
312	}
313	sub cf::map::detach {
314	my ($obj, $name) = @_;
315	die;#d#
316	}
317		1144
318	sub attach_global {	1145	exists $obj->{_attachment}{$name}
319	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
320	}	1146	}
321		1147
322	sub attach_to_type {	1148	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
323	my $type = shift;	1149	eval "#line " . __LINE__ . " 'cf.pm'
324	my $subtype = shift;	1150	sub cf::\L$klass\E::_attach_registry {
		1151	(\\\@CB_$klass, KLASS_$klass)
		1152	}
325		1153
326	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_	1154	sub cf::\L$klass\E::attachment {
327	}
328
329	sub attach_to_objects {
330	_attach @CB_OBJECT, KLASS_OBJECT, @_
331	}
332
333	sub attach_to_players {
334	_attach @CB_PLAYER, KLASS_PLAYER, @_
335	}
336
337	sub attach_to_maps {
338	_attach @CB_MAP, KLASS_MAP, @_
339	}
340
341	sub register_attachment {
342	my $name = shift;	1155	my \$name = shift;
343		1156
344	$attachment{$name} = [[KLASS_OBJECT, @_]];
345	}
346
347	sub register_map_attachment {
348	my $name = shift;
349
350	$attachment{$name} = [[KLASS_MAP, @_]];	1157	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1158	}
		1159	";
		1160	die if $@;
351	}	1161	}
352		1162
353	our $override;	1163	our $override;
354	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1164	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
355		1165
356	sub override {	1166	sub override {
357	$override = 1;	1167	$override = 1;
358	@invoke_results = ();	1168	@INVOKE_RESULTS = (@_);
359	}	1169	}
360		1170
361	sub do_invoke {	1171	sub do_invoke {
362	my $event = shift;	1172	my $event = shift;
363	my $callbacks = shift;	1173	my $callbacks = shift;
364		1174
365	@invoke_results = ();	1175	@INVOKE_RESULTS = ();
366		1176
367	local $override;	1177	local $override;
368		1178
369	for (@$callbacks) {	1179	for (@$callbacks) {
370	eval { &{$_->[1]} };	1180	eval { &{$_->[1]} };
371		1181
372	if ($@) {	1182	if ($@) {
373	warn "$@";
374	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	1183	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
375	override;	1184	override;
376	}	1185	}
377		1186
378	return 1 if $override;	1187	return 1 if $override;
379	}	1188	}
380		1189
381	0	1190	0
382	}	1191	}
		1192
		1193	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1194
		1195	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1196
		1197	Generate an object-specific event with the given arguments.
		1198
		1199	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1200	removed in future versions), and there is no public API to access override
		1201	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1202
		1203	=back
		1204
		1205	=cut
383		1206
384	#############################################################################	1207	#############################################################################
385	# object support	1208	# object support
386		1209
387	sub instantiate {	1210	sub _object_equal($$);
		1211	sub _object_equal($$) {
		1212	my ($a, $b) = @_;
		1213
		1214	return 0 unless (ref $a) eq (ref $b);
		1215
		1216	if ("HASH" eq ref $a) {
		1217	my @ka = keys %$a;
		1218	my @kb = keys %$b;
		1219
		1220	return 0 if @ka != @kb;
		1221
		1222	for (0 .. $#ka) {
		1223	return 0 unless $ka[$_] eq $kb[$_];
		1224	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1225	}
		1226
		1227	} elsif ("ARRAY" eq ref $a) {
		1228
		1229	return 0 if @$a != @$b;
		1230
		1231	for (0 .. $#$a) {
		1232	return 0 unless _object_equal $a->[$_], $b->[$_];
		1233	}
		1234
		1235	} elsif ($a ne $b) {
		1236	return 0;
		1237	}
		1238
		1239	1
		1240	}
		1241
		1242	our $SLOW_MERGES;#d#
		1243	sub _can_merge {
388	my ($obj, $data) = @_;	1244	my ($ob1, $ob2) = @_;
389		1245
390	$data = from_json $data;	1246	++$SLOW_MERGES;#d#
391		1247
392	for (@$data) {	1248	# we do the slow way here
393	my ($name, $args) = @$_;	1249	return _object_equal $ob1, $ob2
394
395	$obj->attach ($name, %{$args || {} });
396	}
397	}	1250	}
398		1251
399	# basically do the same as instantiate, without calling instantiate
400	sub reattach {	1252	sub reattach {
		1253	# basically do the same as instantiate, without calling instantiate
401	my ($obj) = @_;	1254	my ($obj) = @_;
		1255
		1256	# no longer needed after getting rid of delete_package?
		1257	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1258
402	my $registry = $obj->registry;	1259	my $registry = $obj->registry;
403		1260
404	@$registry = ();	1261	@$registry = ();
405		1262
406	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1263	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
407		1264
408	for my $name (keys %{ $obj->{_attachment} || {} }) {	1265	for my $name (keys %{ $obj->{_attachment} || {} }) {
409	if (my $attach = $attachment{$name}) {	1266	if (my $attach = $attachment{$name}) {
410	for (@$attach) {	1267	for (@$attach) {
411	my ($klass, @attach) = @$_;	1268	my ($klass, @attach) = @$_;
412	_attach @$registry, $klass, @attach;	1269	_attach $registry, $klass, @attach;
413	}	1270	}
414	} else {	1271	} else {
415	warn "object uses attachment '$name' that is not available, postponing.\n";	1272	info "object uses attachment '$name' that is not available, postponing.\n";
416	}	1273	}
417	}	1274	}
418	}	1275	}
419		1276
420	sub object_freezer_save {	1277	cf::attachable->attach (
421	my ($filename, $objs) = @_;
422
423	if (@$objs) {
424	open my $fh, ">:raw", "$filename.pst~";
425	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
426	close $fh;
427	chmod SAVE_MODE, "$filename.pst~";
428	rename "$filename.pst~", "$filename.pst";
429	} else {
430	unlink "$filename.pst";
431	}
432
433	chmod SAVE_MODE, "$filename~";
434	rename "$filename~", $filename;
435	}
436
437	sub object_thawer_load {
438	my ($filename) = @_;
439
440	open my $fh, "<:raw:perlio", "$filename.pst"
441	or return;
442
443	eval { local $/; (Storable::thaw <$fh>)->{objs} }
444	}
445
446	attach_to_objects
447	prio => -1000000,	1278	prio => -1000000,
		1279	on_instantiate => sub {
		1280	my ($obj, $data) = @_;
		1281
		1282	$data = decode_json $data;
		1283
		1284	for (@$data) {
		1285	my ($name, $args) = @$_;
		1286
		1287	$obj->attach ($name, %{$args || {} });
		1288	}
		1289	},
		1290	on_reattach => \&reattach,
448	on_clone => sub {	1291	on_clone => sub {
449	my ($src, $dst) = @_;	1292	my ($src, $dst) = @_;
450		1293
451	@{$dst->registry} = @{$src->registry};	1294	@{$dst->registry} = @{$src->registry};
452		1295
453	%$dst = %$src;	1296	%$dst = %$src;
454		1297
455	%{$dst->{_attachment}} = %{$src->{_attachment}}	1298	%{$dst->{_attachment}} = %{$src->{_attachment}}
456	if exists $src->{_attachment};	1299	if exists $src->{_attachment};
457	},	1300	},
458	;	1301	);
		1302
		1303	sub object_freezer_save {
		1304	my ($filename, $rdata, $objs) = @_;
		1305
		1306	sync_job {
		1307	if (length $$rdata) {
		1308	utf8::decode (my $decname = $filename);
		1309	trace sprintf "saving %s (%d,%d)\n",
		1310	$decname, length $$rdata, scalar @$objs
		1311	if $VERBOSE_IO;
		1312
		1313	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1314	aio_chmod $fh, SAVE_MODE;
		1315	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1316	if ($cf::USE_FSYNC) {
		1317	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1318	aio_fsync $fh;
		1319	}
		1320	aio_close $fh;
		1321
		1322	if (@$objs) {
		1323	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1324	aio_chmod $fh, SAVE_MODE;
		1325	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1326	aio_write $fh, 0, (length $data), $data, 0;
		1327	if ($cf::USE_FSYNC) {
		1328	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1329	aio_fsync $fh;
		1330	}
		1331	aio_close $fh;
		1332	aio_rename "$filename.pst~", "$filename.pst";
		1333	}
		1334	} else {
		1335	aio_unlink "$filename.pst";
		1336	}
		1337
		1338	aio_rename "$filename~", $filename;
		1339
		1340	$filename =~ s%/[^/]+$%%;
		1341	aio_pathsync $filename if $cf::USE_FSYNC;
		1342	} else {
		1343	error "unable to save objects: $filename~: $!\n";
		1344	}
		1345	} else {
		1346	aio_unlink $filename;
		1347	aio_unlink "$filename.pst";
		1348	}
		1349	};
		1350	}
		1351
		1352	sub object_freezer_as_string {
		1353	my ($rdata, $objs) = @_;
		1354
		1355	use Data::Dumper;
		1356
		1357	$$rdata . Dumper $objs
		1358	}
		1359
		1360	sub object_thawer_load {
		1361	my ($filename) = @_;
		1362
		1363	my ($data, $av);
		1364
		1365	(aio_load $filename, $data) >= 0
		1366	or return;
		1367
		1368	unless (aio_stat "$filename.pst") {
		1369	(aio_load "$filename.pst", $av) >= 0
		1370	or return;
		1371
		1372	my $st = eval { Coro::Storable::thaw $av };
		1373	$av = $st->{objs};
		1374	}
		1375
		1376	utf8::decode (my $decname = $filename);
		1377	trace sprintf "loading %s (%d,%d)\n",
		1378	$decname, length $data, scalar @{$av || []}
		1379	if $VERBOSE_IO;
		1380
		1381	($data, $av)
		1382	}
		1383
		1384	=head2 COMMAND CALLBACKS
		1385
		1386	=over 4
		1387
		1388	=cut
459		1389
460	#############################################################################	1390	#############################################################################
461	# old plug-in events	1391	# command handling &c
462		1392
463	sub inject_event {	1393	=item cf::register_command $name => \&callback($ob,$args);
464	my $extension = shift;
465	my $event_code = shift;
466		1394
467	my $cb = $hook[$event_code]{$extension}	1395	Register a callback for execution when the client sends the user command
468	or return;	1396	$name.
469		1397
470	&$cb	1398	=cut
471	}
472
473	sub inject_global_event {
474	my $event = shift;
475
476	my $cb = $hook[$event]
477	or return;
478
479	List::Util::max map &$_, values %$cb
480	}
481
482	sub inject_command {
483	my ($name, $obj, $params) = @_;
484
485	for my $cmd (@{ $command{$name} }) {
486	$cmd->[1]->($obj, $params);
487	}
488
489	-1
490	}
491		1399
492	sub register_command {	1400	sub register_command {
493	my ($name, $time, $cb) = @_;	1401	my ($name, $cb) = @_;
494		1402
495	my $caller = caller;	1403	my $caller = caller;
496	#warn "registering command '$name/$time' to '$caller'";	1404	#warn "registering command '$name/$time' to '$caller'";
497		1405
498	push @{ $command{$name} }, [$time, $cb, $caller];	1406	push @{ $COMMAND{$name} }, [$caller, $cb];
499	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
500	}	1407	}
		1408
		1409	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1410
		1411	Register a callback for execution when the client sends an (synchronous)
		1412	extcmd packet. Ext commands will be processed in the order they are
		1413	received by the server, like other user commands. The first argument is
		1414	the logged-in player. Ext commands can only be processed after a player
		1415	has logged in successfully.
		1416
		1417	If the callback returns something, it is sent back as if reply was being
		1418	called.
		1419
		1420	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1421
		1422	Register a callback for execution when the client sends an (asynchronous)
		1423	exticmd packet. Exti commands are processed by the server as soon as they
		1424	are received, i.e. out of order w.r.t. other commands. The first argument
		1425	is a client socket. Exti commands can be received anytime, even before
		1426	log-in.
		1427
		1428	If the callback returns something, it is sent back as if reply was being
		1429	called.
		1430
		1431	=cut
501		1432
502	sub register_extcmd {	1433	sub register_extcmd {
503	my ($name, $cb) = @_;	1434	my ($name, $cb) = @_;
504		1435
505	my $caller = caller;	1436	$EXTCMD{$name} = $cb;
506	#warn "registering extcmd '$name' to '$caller'";
507
508	$extcmd{$name} = [$cb, $caller];
509	}	1437	}
510		1438
511	sub register {	1439	sub register_exticmd {
512	my ($base, $pkg) = @_;	1440	my ($name, $cb) = @_;
513		1441
514	#TODO	1442	$EXTICMD{$name} = $cb;
515	}	1443	}
516		1444
517	sub load_extension {	1445	use File::Glob ();
518	my ($path) = @_;
519		1446
520	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1447	cf::player->attach (
521	my $base = $1;	1448	on_unknown_command => sub {
522	my $pkg = $1;	1449	my ($pl, $name, $params) = @_;
523	$pkg =~ s/[^[:word:]]/_/g;
524	$pkg = "ext::$pkg";
525		1450
526	warn "loading '$path' into '$pkg'\n";	1451	my $cb = $COMMAND{$name}
		1452	or return;
527		1453
528	open my $fh, "<:utf8", $path	1454	for my $cmd (@$cb) {
529	or die "$path: $!";	1455	$cmd->[1]->($pl->ob, $params);
530
531	my $source =
532	"package $pkg; use strict; use utf8;\n"
533	. "#line 1 \"$path\"\n{\n"
534	. (do { local $/; <$fh> })
535	. "\n};\n1";
536
537	eval $source
538	or die "$path: $@";
539
540	push @exts, $pkg;
541	$ext_pkg{$base} = $pkg;
542
543	# no strict 'refs';
544	# @{"$pkg\::ISA"} = ext::;
545
546	register $base, $pkg;
547	}
548
549	sub unload_extension {
550	my ($pkg) = @_;
551
552	warn "removing extension $pkg\n";
553
554	# remove hooks
555	#TODO
556	# for my $idx (0 .. $#PLUGIN_EVENT) {
557	# delete $hook[$idx]{$pkg};
558	# }
559
560	# remove commands
561	for my $name (keys %command) {
562	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
563
564	if (@cb) {
565	$command{$name} = \@cb;
566	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
567	} else {
568	delete $command{$name};
569	delete $COMMAND{"$name\000"};
570	}
571	}
572
573	# remove extcmds
574	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
575	delete $extcmd{$name};
576	}
577
578	if (my $cb = $pkg->can ("unload")) {
579	eval {
580	$cb->($pkg);
581	1
582	} or warn "$pkg unloaded, but with errors: $@";
583	}
584
585	Symbol::delete_package $pkg;
586	}
587
588	sub load_extensions {
589	my $LIBDIR = maps_directory "perl";
590
591	for my $ext (<$LIBDIR/*.ext>) {
592	next unless -r $ext;
593	eval {
594	load_extension $ext;
595	1
596	} or warn "$ext not loaded: $@";
597	}
598	}
599
600	sub _perl_reload(&) {
601	my ($msg) = @_;
602
603	$msg->("reloading...");
604
605	eval {
606	# 1. cancel all watchers
607	$_->cancel for Event::all_watchers;
608
609	# 2. unload all extensions
610	for (@exts) {
611	$msg->("unloading <$_>");
612	unload_extension $_;
613	}
614
615	# 3. unload all modules loaded from $LIBDIR
616	while (my ($k, $v) = each %INC) {
617	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
618
619	$msg->("removing <$k>");
620	delete $INC{$k};
621
622	$k =~ s/\.pm$//;
623	$k =~ s/\//::/g;
624
625	if (my $cb = $k->can ("unload_module")) {
626	$cb->();
627	}
628
629	Symbol::delete_package $k;
630	}
631
632	# 4. get rid of safe::, as good as possible
633	Symbol::delete_package "safe::$_"
634	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
635
636	# 5. remove register_script_function callbacks
637	# TODO
638
639	# 6. unload cf.pm "a bit"
640	delete $INC{"cf.pm"};
641
642	# don't, removes xs symbols, too,
643	# and global variables created in xs
644	#Symbol::delete_package __PACKAGE__;
645
646	# 7. reload cf.pm
647	$msg->("reloading cf.pm");
648	require cf;
649	};
650	$msg->($@) if $@;
651
652	$msg->("reloaded");
653	};
654
655	sub perl_reload() {
656	_perl_reload {
657	warn $_[0];
658	print "$_[0]\n";
659	};
660	}
661
662	register_command "perl-reload", 0, sub {
663	my ($who, $arg) = @_;
664
665	if ($who->flag (FLAG_WIZ)) {
666	_perl_reload {
667	warn $_[0];
668	$who->message ($_[0]);
669	};	1456	}
		1457
		1458	cf::override;
670	}	1459	},
671	};
672
673	#############################################################################
674	# extcmd framework, basically convert ext <msg>
675	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
676
677	attach_to_players
678	on_extcmd => sub {	1460	on_extcmd => sub {
679	my ($pl, $buf) = @_;	1461	my ($pl, $buf) = @_;
680		1462
681	my $msg = eval { from_json $buf };	1463	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
682		1464
683	if (ref $msg) {	1465	if (ref $msg) {
		1466	my ($type, $reply, @payload) =
		1467	"ARRAY" eq ref $msg
		1468	? @$msg
		1469	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1470
		1471	my @reply;
		1472
684	if (my $cb = $extcmd{$msg->{msgtype}}) {	1473	if (my $cb = $EXTCMD{$type}) {
685	if (my %reply = $cb->[0]->($pl, $msg)) {	1474	@reply = $cb->($pl, @payload);
686	$pl->ext_reply ($msg->{msgid}, %reply);	1475	}
		1476
		1477	$pl->ext_reply ($reply, @reply)
		1478	if $reply;
		1479
		1480	} else {
		1481	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1482	}
		1483
		1484	cf::override;
		1485	},
		1486	);
		1487
		1488	# "readahead" all extensions
		1489	sub cache_extensions {
		1490	my $grp = IO::AIO::aio_group;
		1491
		1492	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1493	for (grep /\.ext$/, @{$_[0]}) {
		1494	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1495	}
		1496	};
		1497
		1498	$grp
		1499	}
		1500
		1501	sub load_extensions {
		1502	info "loading extensions...";
		1503
		1504	cf::sync_job {
		1505	my %todo;
		1506
		1507	for my $path (<$LIBDIR/*.ext>) {
		1508	next unless -r $path;
		1509
		1510	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1511	my $base = $1;
		1512	my $pkg = $1;
		1513	$pkg =~ s/[^[:word:]]/_/g;
		1514	$pkg = "ext::$pkg";
		1515
		1516	open my $fh, "<:utf8", $path
		1517	or die "$path: $!";
		1518
		1519	my $source = do { local $/; <$fh> };
		1520
		1521	my %ext = (
		1522	path => $path,
		1523	base => $base,
		1524	pkg => $pkg,
		1525	);
		1526
		1527	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1528	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1529
		1530	$ext{source} =
		1531	"package $pkg; use common::sense;\n"
		1532	. "#line 1 \"$path\"\n{\n"
		1533	. $source
		1534	. "\n};\n1";
		1535
		1536	$todo{$base} = \%ext;
		1537	}
		1538
		1539	my $pass = 0;
		1540	my %done;
		1541	while (%todo) {
		1542	my $progress;
		1543
		1544	++$pass;
		1545
		1546	ext:
		1547	while (my ($k, $v) = each %todo) {
		1548	for (split /,\s*/, $v->{meta}{depends}) {
		1549	next ext
		1550	unless exists $done{$_};
		1551	}
		1552
		1553	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1554
		1555	my $active = eval $v->{source};
		1556
		1557	if (length $@) {
		1558	error "$v->{path}: $@\n";
		1559
		1560	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1561	if exists $v->{meta}{mandatory};
		1562
		1563	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1564	delete $todo{$k};
		1565	} else {
		1566	$done{$k} = delete $todo{$k};
		1567	push @EXTS, $v->{pkg};
		1568	$progress = 1;
		1569
		1570	info "$v->{base}: extension inactive.\n"
		1571	unless $active;
687	}	1572	}
688	}	1573	}
689	} else {	1574
690	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1575	unless ($progress) {
		1576	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1577
		1578	while (my ($k, $v) = each %todo) {
		1579	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1580	if exists $v->{meta}{mandatory};
		1581	}
		1582
		1583	last;
691	}	1584	}
692		1585	}
693	cf::override;
694	},	1586	};
695	;	1587	}
696		1588
697	#############################################################################	1589	#############################################################################
698	# load/save/clean perl data associated with a map
699		1590
700	*cf::mapsupport::on_clean = sub {	1591	=back
		1592
		1593	=head2 CORE EXTENSIONS
		1594
		1595	Functions and methods that extend core deliantra objects.
		1596
		1597	=cut
		1598
		1599	package cf::player;
		1600
		1601	use Coro::AIO;
		1602
		1603	=head3 cf::player
		1604
		1605	=over 4
		1606
		1607	=item cf::player::num_playing
		1608
		1609	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1610
		1611	=cut
		1612
		1613	sub num_playing {
		1614	scalar grep
		1615	$_->ob->map
		1616	&& !$_->hidden
		1617	&& !$_->ob->flag (cf::FLAG_WIZ),
		1618	cf::player::list
		1619	}
		1620
		1621	=item cf::player::find $login
		1622
		1623	Returns the given player object, loading it if necessary (might block).
		1624
		1625	=cut
		1626
		1627	sub playerdir($) {
		1628	"$PLAYERDIR/"
		1629	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1630	}
		1631
		1632	sub path($) {
		1633	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1634
		1635	(playerdir $login) . "/playerdata"
		1636	}
		1637
		1638	sub find_active($) {
		1639	$cf::PLAYER{$_[0]}
		1640	and $cf::PLAYER{$_[0]}->active
		1641	and $cf::PLAYER{$_[0]}
		1642	}
		1643
		1644	sub exists($) {
701	my ($map) = @_;	1645	my ($login) = @_;
702		1646
703	my $path = $map->tmpname;	1647	$cf::PLAYER{$login}
704	defined $path or return;	1648	or !aio_stat path $login
705
706	unlink "$path.pst";
707	};
708
709	# old style persistent data, TODO: remove #d#
710	*cf::mapsupport::on_swapin =
711	*cf::mapsupport::on_load = sub {
712	my ($map) = @_;
713
714	my $path = $map->tmpname;
715	$path = $map->path unless defined $path;
716
717	open my $fh, "<:raw", "$path.cfperl"
718	or return; # no perl data
719
720	my $data = Storable::thaw do { local $/; <$fh> };
721
722	$data->{version} <= 1
723	or return; # too new
724
725	$map->_set_obs ($data->{obs});
726	$map->invoke (EVENT_MAP_UPGRADE);
727	};
728
729	attach_to_maps prio => -10000, package => cf::mapsupport::;
730
731	#############################################################################
732	# load/save perl data associated with player->ob objects
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}	1649	}
737		1650
738	attach_to_players	1651	sub find($) {
		1652	return $cf::PLAYER{$_[0]} || do {
		1653	my $login = $_[0];
		1654
		1655	my $guard = cf::lock_acquire "user_find:$login";
		1656
		1657	$cf::PLAYER{$_[0]} || do {
		1658	# rename old playerfiles to new ones
		1659	#TODO: remove when no longer required
		1660	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1661	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1662	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1663	aio_unlink +(playerdir $login) . "/$login.pl";
		1664
		1665	my $f = new_from_file cf::object::thawer path $login
		1666	or return;
		1667
		1668	my $pl = cf::player::load_pl $f
		1669	or return;
		1670
		1671	local $cf::PLAYER_LOADING{$login} = $pl;
		1672	$f->resolve_delayed_derefs;
		1673	$cf::PLAYER{$login} = $pl
		1674	}
		1675	}
		1676	}
		1677
		1678	cf::player->attach (
739	on_load => sub {	1679	on_load => sub {
740	my ($pl, $path) = @_;	1680	my ($pl, $path) = @_;
741		1681
742	for my $o (all_objects $pl->ob) {	1682	# restore slots saved in save, below
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1683	my $slots = delete $pl->{_slots};
744	$o->set_ob_key_value ("_perl_data");
745		1684
746	%$o = %{ Storable::thaw pack "H*", $value };	1685	$pl->ob->current_weapon ($slots->[0]);
		1686	$pl->combat_ob ($slots->[1]);
		1687	$pl->ranged_ob ($slots->[2]);
		1688	},
		1689	);
		1690
		1691	sub save($) {
		1692	my ($pl) = @_;
		1693
		1694	return if $pl->{deny_save};
		1695
		1696	my $path = path $pl;
		1697	my $guard = cf::lock_acquire "user_save:$path";
		1698
		1699	return if $pl->{deny_save};
		1700
		1701	aio_mkdir playerdir $pl, 0770;
		1702	$pl->{last_save} = $cf::RUNTIME;
		1703
		1704	cf::get_slot 0.01;
		1705
		1706	# save slots, to be restored later
		1707	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1708
		1709	$pl->save_pl ($path);
		1710	cf::cede_to_tick;
		1711	}
		1712
		1713	sub new($) {
		1714	my ($login) = @_;
		1715
		1716	my $self = create;
		1717
		1718	$self->ob->name ($login);
		1719	$self->{deny_save} = 1;
		1720
		1721	$cf::PLAYER{$login} = $self;
		1722
		1723	$self
		1724	}
		1725
		1726	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1727
		1728	=cut
		1729
		1730	sub send_msg {
		1731	my $ns = shift->ns
		1732	or return;
		1733	$ns->send_msg (@_);
		1734	}
		1735
		1736	=item $pl->quit_character
		1737
		1738	Nukes the player without looking back. If logged in, the connection will
		1739	be destroyed. May block for a long time.
		1740
		1741	=cut
		1742
		1743	sub quit_character {
		1744	my ($pl) = @_;
		1745
		1746	my $name = $pl->ob->name;
		1747
		1748	$pl->{deny_save} = 1;
		1749	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1750
		1751	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1752	$pl->deactivate;
		1753
		1754	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1755	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1756	ext::highscore::check ($pl->ob);
		1757
		1758	$pl->ns->destroy if $pl->ns;
		1759
		1760	my $path = playerdir $pl;
		1761	my $temp = "$path~$cf::RUNTIME~deleting~";
		1762	aio_rename $path, $temp;
		1763	delete $cf::PLAYER{$pl->ob->name};
		1764	$pl->destroy;
		1765
		1766	my $prefix = qr<^~\Q$name\E/>;
		1767
		1768	# nuke player maps
		1769	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1770
		1771	IO::AIO::aio_rmtree $temp;
		1772	}
		1773
		1774	=item $pl->kick
		1775
		1776	Kicks a player out of the game. This destroys the connection.
		1777
		1778	=cut
		1779
		1780	sub kick {
		1781	my ($pl, $kicker) = @_;
		1782
		1783	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1784	$pl->killer ("kicked");
		1785	$pl->ns->destroy;
		1786	}
		1787
		1788	=item cf::player::list_logins
		1789
		1790	Returns am arrayref of all valid playernames in the system, can take a
		1791	while and may block, so not sync_job-capable, ever.
		1792
		1793	=cut
		1794
		1795	sub list_logins {
		1796	my $dirs = aio_readdir $PLAYERDIR
		1797	or return [];
		1798
		1799	my @logins;
		1800
		1801	for my $login (@$dirs) {
		1802	my $path = path $login;
		1803
		1804	# a .pst is a dead give-away for a valid player
		1805	# if no pst file found, open and chekc for blocked users
		1806	if (aio_stat "$path.pst") {
		1807	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1808	aio_read $fh, 0, 512, my $buf, 0 or next;
		1809	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1810	}
		1811
		1812	utf8::decode $login;
		1813	push @logins, $login;
		1814	}
		1815
		1816	\@logins
		1817	}
		1818
		1819	=item $player->maps
		1820
		1821	=item cf::player::maps $login
		1822
		1823	Returns an arrayref of map paths that are private for this
		1824	player. May block.
		1825
		1826	=cut
		1827
		1828	sub maps($) {
		1829	my ($pl) = @_;
		1830
		1831	$pl = ref $pl ? $pl->ob->name : $pl;
		1832
		1833	my $files = aio_readdir playerdir $pl
		1834	or return;
		1835
		1836	my @paths;
		1837
		1838	for (@$files) {
		1839	utf8::decode $_;
		1840	next if /\.(?:pl|pst)$/;
		1841	next unless /^$PATH_SEP/o;
		1842
		1843	push @paths, cf::map::normalise "~$pl/$_";
		1844	}
		1845
		1846	\@paths
		1847	}
		1848
		1849	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1850
		1851	Expand deliantra pod fragments into protocol xml.
		1852
		1853	=item $player->ext_reply ($msgid, @msg)
		1854
		1855	Sends an ext reply to the player.
		1856
		1857	=cut
		1858
		1859	sub ext_reply($$@) {
		1860	my ($self, $id, @msg) = @_;
		1861
		1862	$self->ns->ext_reply ($id, @msg)
		1863	}
		1864
		1865	=item $player->ext_msg ($type, @msg)
		1866
		1867	Sends an ext event to the client.
		1868
		1869	=cut
		1870
		1871	sub ext_msg($$@) {
		1872	my ($self, $type, @msg) = @_;
		1873
		1874	$self->ns->ext_msg ($type, @msg);
		1875	}
		1876
		1877	=head3 cf::region
		1878
		1879	=over 4
		1880
		1881	=cut
		1882
		1883	package cf::region;
		1884
		1885	=item cf::region::find_by_path $path
		1886
		1887	Tries to decuce the likely region for a map knowing only its path.
		1888
		1889	=cut
		1890
		1891	sub find_by_path($) {
		1892	my ($path) = @_;
		1893
		1894	$path =~ s/^~[^\/]*//; # skip ~login
		1895
		1896	my ($match, $specificity);
		1897
		1898	for my $region (list) {
		1899	if ($region->{match} && $path =~ $region->{match}) {
		1900	($match, $specificity) = ($region, $region->specificity)
		1901	if $region->specificity > $specificity;
		1902	}
		1903	}
		1904
		1905	$match
		1906	}
		1907
		1908	=back
		1909
		1910	=head3 cf::map
		1911
		1912	=over 4
		1913
		1914	=cut
		1915
		1916	package cf::map;
		1917
		1918	use Fcntl;
		1919	use Coro::AIO;
		1920
		1921	use overload
		1922	'""' => \&as_string,
		1923	fallback => 1;
		1924
		1925	our $MAX_RESET = 3600;
		1926	our $DEFAULT_RESET = 3000;
		1927
		1928	sub generate_random_map {
		1929	my ($self, $rmp) = @_;
		1930
		1931	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1932
		1933	$self->_create_random_map ($rmp);
		1934	}
		1935
		1936	=item cf::map->register ($regex, $prio)
		1937
		1938	Register a handler for the map path matching the given regex at the
		1939	givne priority (higher is better, built-in handlers have priority 0, the
		1940	default).
		1941
		1942	=cut
		1943
		1944	sub register {
		1945	my (undef, $regex, $prio) = @_;
		1946	my $pkg = caller;
		1947
		1948	push @{"$pkg\::ISA"}, __PACKAGE__;
		1949
		1950	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1951	}
		1952
		1953	# also paths starting with '/'
		1954	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1955
		1956	sub thawer_merge {
		1957	my ($self, $merge) = @_;
		1958
		1959	# we have to keep some variables in memory intact
		1960	local $self->{path};
		1961	local $self->{load_path};
		1962
		1963	$self->SUPER::thawer_merge ($merge);
		1964	}
		1965
		1966	sub normalise {
		1967	my ($path, $base) = @_;
		1968
		1969	$path = "$path"; # make sure it's a string
		1970
		1971	$path =~ s/\.map$//;
		1972
		1973	# map plan:
		1974	#
		1975	# /! non-realised random map exit (special hack!)
		1976	# {... are special paths that are not being touched
		1977	# ?xxx/... are special absolute paths
		1978	# ?random/... random maps
		1979	# /... normal maps
		1980	# ~user/... per-player map of a specific user
		1981
		1982	$path =~ s/$PATH_SEP/\//go;
		1983
		1984	# treat it as relative path if it starts with
		1985	# something that looks reasonable
		1986	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1987	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1988
		1989	$base =~ s{[^/]+/?$}{};
		1990	$path = "$base/$path";
		1991	}
		1992
		1993	for ($path) {
		1994	redo if s{/\.?/}{/};
		1995	redo if s{/[^/]+/\.\./}{/};
		1996	}
		1997
		1998	$path
		1999	}
		2000
		2001	sub new_from_path {
		2002	my (undef, $path, $base) = @_;
		2003
		2004	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2005
		2006	$path = normalise $path, $base;
		2007
		2008	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2009	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2010	my $self = bless cf::map::new, $pkg;
		2011	$self->{path} = $path; $self->path ($path);
		2012	$self->init; # pass $1 etc.
		2013	return $self;
		2014	}
		2015	}
		2016
		2017	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2018	()
		2019	}
		2020
		2021	# may re-bless or do other evil things
		2022	sub init {
		2023	my ($self) = @_;
		2024
		2025	$self
		2026	}
		2027
		2028	sub as_string {
		2029	my ($self) = @_;
		2030
		2031	"$self->{path}"
		2032	}
		2033
		2034	# the displayed name, this is a one way mapping
		2035	sub visible_name {
		2036	&as_string
		2037	}
		2038
		2039	# the original (read-only) location
		2040	sub load_path {
		2041	my ($self) = @_;
		2042
		2043	"$MAPDIR/$self->{path}.map"
		2044	}
		2045
		2046	# the temporary/swap location
		2047	sub save_path {
		2048	my ($self) = @_;
		2049
		2050	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2051	"$TMPDIR/$path.map"
		2052	}
		2053
		2054	# the unique path, undef == no special unique path
		2055	sub uniq_path {
		2056	my ($self) = @_;
		2057
		2058	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2059	"$UNIQUEDIR/$path"
		2060	}
		2061
		2062	sub decay_objects {
		2063	my ($self) = @_;
		2064
		2065	return if $self->{deny_reset};
		2066
		2067	$self->do_decay_objects;
		2068	}
		2069
		2070	sub unlink_save {
		2071	my ($self) = @_;
		2072
		2073	utf8::encode (my $save = $self->save_path);
		2074	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2075	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2076	}
		2077
		2078	sub load_header_from($) {
		2079	my ($self, $path) = @_;
		2080
		2081	utf8::encode $path;
		2082	my $f = new_from_file cf::object::thawer $path
		2083	or return;
		2084
		2085	$self->_load_header ($f)
		2086	or return;
		2087
		2088	local $MAP_LOADING{$self->{path}} = $self;
		2089	$f->resolve_delayed_derefs;
		2090
		2091	$self->{load_path} = $path;
		2092
		2093	1
		2094	}
		2095
		2096	# used to laod the header of an original map
		2097	sub load_header_orig {
		2098	my ($self) = @_;
		2099
		2100	$self->load_header_from ($self->load_path)
		2101	}
		2102
		2103	# used to laod the header of an instantiated map
		2104	sub load_header_temp {
		2105	my ($self) = @_;
		2106
		2107	$self->load_header_from ($self->save_path)
		2108	}
		2109
		2110	# called after loading the header from an instantiated map
		2111	sub prepare_temp {
		2112	my ($self) = @_;
		2113
		2114	$self->last_access ((delete $self->{last_access})
		2115	|| $cf::RUNTIME); #d#
		2116	# safety
		2117	$self->{instantiate_time} = $cf::RUNTIME
		2118	if $self->{instantiate_time} > $cf::RUNTIME;
		2119	}
		2120
		2121	# called after loading the header from an original map
		2122	sub prepare_orig {
		2123	my ($self) = @_;
		2124
		2125	$self->{load_original} = 1;
		2126	$self->{instantiate_time} = $cf::RUNTIME;
		2127	$self->last_access ($cf::RUNTIME);
		2128	$self->instantiate;
		2129	}
		2130
		2131	sub load_header {
		2132	my ($self) = @_;
		2133
		2134	if ($self->load_header_temp) {
		2135	$self->prepare_temp;
		2136	} else {
		2137	$self->load_header_orig
		2138	or return;
		2139	$self->prepare_orig;
		2140	}
		2141
		2142	$self->{deny_reset} = 1
		2143	if $self->no_reset;
		2144
		2145	$self->default_region (cf::region::find_by_path $self->{path})
		2146	unless $self->default_region;
		2147
		2148	1
		2149	}
		2150
		2151	sub find;
		2152	sub find {
		2153	my ($path, $origin) = @_;
		2154
		2155	cf::cede_to_tick;
		2156
		2157	$path = normalise $path, $origin;
		2158
		2159	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2160	my $guard2 = cf::lock_acquire "map_find:$path";
		2161
		2162	$cf::MAP{$path} || do {
		2163	my $map = new_from_path cf::map $path
		2164	or return;
		2165
		2166	$map->{last_save} = $cf::RUNTIME;
		2167
		2168	$map->load_header
		2169	or return;
		2170
		2171	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2172	# doing this can freeze the server in a sync job, obviously
		2173	#$cf::WAIT_FOR_TICK->wait;
		2174	undef $guard2;
		2175	undef $guard1;
		2176	$map->reset;
		2177	return find $path;
		2178	}
		2179
		2180	$cf::MAP{$path} = $map
		2181	}
		2182	}
		2183
		2184	sub pre_load { }
		2185	#sub post_load { } # XS
		2186
		2187	sub load {
		2188	my ($self) = @_;
		2189
		2190	local $self->{deny_reset} = 1; # loading can take a long time
		2191
		2192	my $path = $self->{path};
		2193
		2194	{
		2195	my $guard = cf::lock_acquire "map_data:$path";
		2196
		2197	return unless $self->valid;
		2198	return unless $self->state == cf::MAP_SWAPPED;
		2199
		2200	$self->alloc;
		2201
		2202	$self->pre_load;
		2203	cf::cede_to_tick;
		2204
		2205	if (exists $self->{load_path}) {
		2206	my $f = new_from_file cf::object::thawer $self->{load_path};
		2207	$f->skip_block;
		2208	$self->_load_objects ($f)
		2209	or return;
		2210
		2211	$self->post_load_original
		2212	if delete $self->{load_original};
		2213
		2214	if (my $uniq = $self->uniq_path) {
		2215	utf8::encode $uniq;
		2216	unless (aio_stat $uniq) {
		2217	if (my $f = new_from_file cf::object::thawer $uniq) {
		2218	$self->clear_unique_items;
		2219	$self->_load_objects ($f);
		2220	$f->resolve_delayed_derefs;
		2221	}
		2222	}
747	}	2223	}
		2224
		2225	$f->resolve_delayed_derefs;
		2226	} else {
		2227	$self->post_load_original
		2228	if delete $self->{load_original};
748	}	2229	}
		2230
		2231	$self->state (cf::MAP_INACTIVE);
		2232
		2233	cf::cede_to_tick;
		2234	# now do the right thing for maps
		2235	$self->link_multipart_objects;
		2236	$self->difficulty ($self->estimate_difficulty)
		2237	unless $self->difficulty;
		2238	cf::cede_to_tick;
		2239
		2240	unless ($self->{deny_activate}) {
		2241	$self->decay_objects;
		2242	$self->fix_auto_apply;
		2243	$self->update_buttons;
		2244	$self->post_load_physics;
		2245	cf::cede_to_tick;
		2246	#$self->activate; # no longer activate maps automatically
		2247	}
		2248
		2249	$self->{last_save} = $cf::RUNTIME;
		2250	$self->last_access ($cf::RUNTIME);
749	},	2251	}
750	;
751		2252
752	#############################################################################	2253	$self->post_load;
753	# core extensions - in perl
754		2254
755	=item cf::player::exists $login	2255	1
756
757	Returns true when the given account exists.
758
759	=cut
760
761	sub cf::player::exists($) {
762	cf::player::find $_[0]
763	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
764	}	2256	}
765		2257
		2258	# customize the map for a given player, i.e.
		2259	# return the _real_ map. used by e.g. per-player
		2260	# maps to change the path to ~playername/mappath
		2261	sub customise_for {
		2262	my ($self, $ob) = @_;
		2263
		2264	return find "~" . $ob->name . "/" . $self->{path}
		2265	if $self->per_player;
		2266
		2267	# return find "?party/" . $ob->name . "/" . $self->{path}
		2268	# if $self->per_party;
		2269
		2270	$self
		2271	}
		2272
		2273	# find and load all maps in the 3x3 area around a map
		2274	sub load_neighbours {
		2275	my ($map) = @_;
		2276
		2277	my @neigh; # diagonal neighbours
		2278
		2279	for (0 .. 3) {
		2280	my $neigh = $map->tile_path ($_)
		2281	or next;
		2282	$neigh = find $neigh, $map
		2283	or next;
		2284	$neigh->load;
		2285
		2286	# now find the diagonal neighbours
		2287	push @neigh,
		2288	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2289	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2290	}
		2291
		2292	for (grep defined $_->[0], @neigh) {
		2293	my ($path, $origin) = @$_;
		2294	my $neigh = find $path, $origin
		2295	or next;
		2296	$neigh->load;
		2297	}
		2298	}
		2299
		2300	sub find_sync {
		2301	my ($path, $origin) = @_;
		2302
		2303	# it's a bug to call this from the main context
		2304	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2305	if $Coro::current == $Coro::main;
		2306
		2307	find $path, $origin
		2308	}
		2309
		2310	sub do_load_sync {
		2311	my ($map) = @_;
		2312
		2313	# it's a bug to call this from the main context
		2314	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2315	if $Coro::current == $Coro::main;
		2316
		2317	$map->load;
		2318	}
		2319
		2320	our %MAP_PREFETCH;
		2321	our $MAP_PREFETCHER = undef;
		2322
		2323	sub find_async {
		2324	my ($path, $origin, $load) = @_;
		2325
		2326	$path = normalise $path, $origin;
		2327
		2328	if (my $map = $cf::MAP{$path}) {
		2329	return $map if !$load || $map->linkable;
		2330	}
		2331
		2332	$MAP_PREFETCH{$path} |= $load;
		2333
		2334	$MAP_PREFETCHER ||= cf::async {
		2335	$Coro::current->{desc} = "map prefetcher";
		2336
		2337	while (%MAP_PREFETCH) {
		2338	while (my ($k, $v) = each %MAP_PREFETCH) {
		2339	if (my $map = find $k) {
		2340	$map->load if $v;
		2341	}
		2342
		2343	delete $MAP_PREFETCH{$k};
		2344	}
		2345	}
		2346	undef $MAP_PREFETCHER;
		2347	};
		2348	$MAP_PREFETCHER->prio (6);
		2349
		2350	()
		2351	}
		2352
		2353	# common code, used by both ->save and ->swapout
		2354	sub _save {
		2355	my ($self) = @_;
		2356
		2357	$self->{last_save} = $cf::RUNTIME;
		2358
		2359	return unless $self->dirty;
		2360
		2361	my $save = $self->save_path; utf8::encode $save;
		2362	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2363
		2364	$self->{load_path} = $save;
		2365
		2366	return if $self->{deny_save};
		2367
		2368	local $self->{last_access} = $self->last_access;#d#
		2369
		2370	cf::async {
		2371	$Coro::current->{desc} = "map player save";
		2372	$_->contr->save for $self->players;
		2373	};
		2374
		2375	cf::get_slot 0.02;
		2376
		2377	if ($uniq) {
		2378	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2379	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2380	} else {
		2381	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2382	}
		2383	}
		2384
		2385	sub save {
		2386	my ($self) = @_;
		2387
		2388	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2389
		2390	$self->_save;
		2391	}
		2392
		2393	sub swap_out {
		2394	my ($self) = @_;
		2395
		2396	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2397
		2398	return if !$self->linkable;
		2399	return if $self->{deny_save};
		2400	return if $self->players;
		2401
		2402	# first deactivate the map and "unlink" it from the core
		2403	$self->deactivate;
		2404	$_->clear_links_to ($self) for values %cf::MAP;
		2405	$self->state (cf::MAP_SWAPPED);
		2406
		2407	# then atomically save
		2408	$self->_save;
		2409
		2410	# then free the map
		2411	$self->clear;
		2412	}
		2413
		2414	sub reset_at {
		2415	my ($self) = @_;
		2416
		2417	# TODO: safety, remove and allow resettable per-player maps
		2418	return 1e99 if $self->{deny_reset};
		2419
		2420	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2421	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2422
		2423	$time + $to
		2424	}
		2425
		2426	sub should_reset {
		2427	my ($self) = @_;
		2428
		2429	$self->reset_at <= $cf::RUNTIME
		2430	}
		2431
		2432	sub reset {
		2433	my ($self) = @_;
		2434
		2435	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2436
		2437	return if $self->players;
		2438
		2439	cf::trace "resetting map ", $self->path, "\n";
		2440
		2441	$self->state (cf::MAP_SWAPPED);
		2442
		2443	# need to save uniques path
		2444	unless ($self->{deny_save}) {
		2445	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2446
		2447	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2448	if $uniq;
		2449	}
		2450
		2451	delete $cf::MAP{$self->path};
		2452
		2453	$self->deactivate;
		2454	$_->clear_links_to ($self) for values %cf::MAP;
		2455	$self->clear;
		2456
		2457	$self->unlink_save;
		2458	$self->destroy;
		2459	}
		2460
		2461	my $nuke_counter = "aaaa";
		2462
		2463	sub nuke {
		2464	my ($self) = @_;
		2465
		2466	{
		2467	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2468
		2469	delete $cf::MAP{$self->path};
		2470
		2471	$self->unlink_save;
		2472
		2473	bless $self, "cf::map::wrap";
		2474	delete $self->{deny_reset};
		2475	$self->{deny_save} = 1;
		2476	$self->reset_timeout (1);
		2477	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2478
		2479	$cf::MAP{$self->path} = $self;
		2480	}
		2481
		2482	$self->reset; # polite request, might not happen
		2483	}
		2484
		2485	=item $maps = cf::map::tmp_maps
		2486
		2487	Returns an arrayref with all map paths of currently instantiated and saved
		2488	maps. May block.
		2489
		2490	=cut
		2491
		2492	sub tmp_maps() {
		2493	[
		2494	map {
		2495	utf8::decode $_;
		2496	/\.map$/
		2497	? normalise $_
		2498	: ()
		2499	} @{ aio_readdir $TMPDIR or [] }
		2500	]
		2501	}
		2502
		2503	=item $maps = cf::map::random_maps
		2504
		2505	Returns an arrayref with all map paths of currently instantiated and saved
		2506	random maps. May block.
		2507
		2508	=cut
		2509
		2510	sub random_maps() {
		2511	[
		2512	map {
		2513	utf8::decode $_;
		2514	/\.map$/
		2515	? normalise "?random/$_"
		2516	: ()
		2517	} @{ aio_readdir $RANDOMDIR or [] }
		2518	]
		2519	}
		2520
		2521	=item cf::map::unique_maps
		2522
		2523	Returns an arrayref of paths of all shared maps that have
		2524	instantiated unique items. May block.
		2525
		2526	=cut
		2527
		2528	sub unique_maps() {
		2529	[
		2530	map {
		2531	utf8::decode $_;
		2532	s/\.map$//; # TODO future compatibility hack
		2533	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2534	? ()
		2535	: normalise $_
		2536	} @{ aio_readdir $UNIQUEDIR or [] }
		2537	]
		2538	}
		2539
		2540	=item cf::map::static_maps
		2541
		2542	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2543	file in the shared directory excluding F</styles> and F</editor>). May
		2544	block.
		2545
		2546	=cut
		2547
		2548	sub static_maps() {
		2549	my @dirs = "";
		2550	my @maps;
		2551
		2552	while (@dirs) {
		2553	my $dir = shift @dirs;
		2554
		2555	next if $dir eq "/styles" || $dir eq "/editor";
		2556
		2557	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2558	or return;
		2559
		2560	for (@$files) {
		2561	s/\.map$// or next;
		2562	utf8::decode $_;
		2563	push @maps, "$dir/$_";
		2564	}
		2565
		2566	push @dirs, map "$dir/$_", @$dirs;
		2567	}
		2568
		2569	\@maps
		2570	}
		2571
		2572	=back
		2573
		2574	=head3 cf::object
		2575
		2576	=cut
		2577
		2578	package cf::object;
		2579
		2580	=over 4
		2581
		2582	=item $ob->inv_recursive
		2583
		2584	Returns the inventory of the object I<and> their inventories, recursively,
		2585	but I<not> the object itself.
		2586
		2587	=cut
		2588
		2589	sub inv_recursive_;
		2590	sub inv_recursive_ {
		2591	map { $_, inv_recursive_ $_->inv } @_
		2592	}
		2593
		2594	sub inv_recursive {
		2595	inv_recursive_ inv $_[0]
		2596	}
		2597
		2598	=item $ref = $ob->ref
		2599
		2600	Creates and returns a persistent reference to an object that can be stored as a string.
		2601
		2602	=item $ob = cf::object::deref ($refstring)
		2603
		2604	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2605	even if the object actually exists. May block.
		2606
		2607	=cut
		2608
		2609	sub deref {
		2610	my ($ref) = @_;
		2611
		2612	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2613	my ($uuid, $name) = ($1, $2);
		2614	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2615	or return;
		2616	$pl->ob->uuid eq $uuid
		2617	or return;
		2618
		2619	$pl->ob
		2620	} else {
		2621	warn "$ref: cannot resolve object reference\n";
		2622	undef
		2623	}
		2624	}
		2625
		2626	package cf;
		2627
		2628	=back
		2629
		2630	=head3 cf::object::player
		2631
		2632	=over 4
		2633
766	=item $player->reply ($npc, $msg[, $flags])	2634	=item $player_object->reply ($npc, $msg[, $flags])
767		2635
768	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2636	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
769	can be C<undef>. Does the right thing when the player is currently in a	2637	can be C<undef>. Does the right thing when the player is currently in a
770	dialogue with the given NPC character.	2638	dialogue with the given NPC character.
771		2639
772	=cut	2640	=cut
773		2641
		2642	our $SAY_CHANNEL = {
		2643	id => "say",
		2644	title => "Map",
		2645	reply => "say ",
		2646	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2647	};
		2648
		2649	our $CHAT_CHANNEL = {
		2650	id => "chat",
		2651	title => "Chat",
		2652	reply => "chat ",
		2653	tooltip => "Player chat and shouts, global to the server.",
		2654	};
		2655
774	# rough implementation of a future "reply" method that works	2656	# rough implementation of a future "reply" method that works
775	# with dialog boxes.	2657	# with dialog boxes.
		2658	#TODO: the first argument must go, split into a $npc->reply_to ( method
776	sub cf::object::player::reply($$$;$) {	2659	sub cf::object::player::reply($$$;$) {
777	my ($self, $npc, $msg, $flags) = @_;	2660	my ($self, $npc, $msg, $flags) = @_;
778		2661
779	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2662	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
780		2663
781	if ($self->{record_replies}) {	2664	if ($self->{record_replies}) {
782	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2665	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2666
783	} else {	2667	} else {
		2668	my $pl = $self->contr;
		2669
		2670	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2671	my $dialog = $pl->{npc_dialog};
		2672	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2673
		2674	} else {
784	$msg = $npc->name . " says: $msg" if $npc;	2675	$msg = $npc->name . " says: $msg" if $npc;
785	$self->message ($msg, $flags);	2676	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2677	}
		2678	}
		2679	}
		2680
		2681	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2682
		2683	=cut
		2684
		2685	sub cf::object::send_msg {
		2686	my $pl = shift->contr
		2687	or return;
		2688	$pl->send_msg (@_);
		2689	}
		2690
		2691	=item $player_object->may ("access")
		2692
		2693	Returns wether the given player is authorized to access resource "access"
		2694	(e.g. "command_wizcast").
		2695
		2696	=cut
		2697
		2698	sub cf::object::player::may {
		2699	my ($self, $access) = @_;
		2700
		2701	$self->flag (cf::FLAG_WIZ) ||
		2702	(ref $cf::CFG{"may_$access"}
		2703	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2704	: $cf::CFG{"may_$access"})
		2705	}
		2706
		2707	=item $player_object->enter_link
		2708
		2709	Freezes the player and moves him/her to a special map (C<{link}>).
		2710
		2711	The player should be reasonably safe there for short amounts of time (e.g.
		2712	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2713	though, as the player cannot control the character while it is on the link
		2714	map.
		2715
		2716	Will never block.
		2717
		2718	=item $player_object->leave_link ($map, $x, $y)
		2719
		2720	Moves the player out of the special C<{link}> map onto the specified
		2721	map. If the map is not valid (or omitted), the player will be moved back
		2722	to the location he/she was before the call to C<enter_link>, or, if that
		2723	fails, to the emergency map position.
		2724
		2725	Might block.
		2726
		2727	=cut
		2728
		2729	sub link_map {
		2730	unless ($LINK_MAP) {
		2731	$LINK_MAP = cf::map::find "{link}"
		2732	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2733	$LINK_MAP->load;
		2734	}
		2735
		2736	$LINK_MAP
		2737	}
		2738
		2739	sub cf::object::player::enter_link {
		2740	my ($self) = @_;
		2741
		2742	$self->deactivate_recursive;
		2743
		2744	++$self->{_link_recursion};
		2745
		2746	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2747
		2748	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2749	if $self->map && $self->map->{path} ne "{link}";
		2750
		2751	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2752	}
		2753
		2754	sub cf::object::player::leave_link {
		2755	my ($self, $map, $x, $y) = @_;
		2756
		2757	return unless $self->contr->active;
		2758
		2759	my $link_pos = delete $self->{_link_pos};
		2760
		2761	unless ($map) {
		2762	# restore original map position
		2763	($map, $x, $y) = @{ $link_pos || [] };
		2764	$map = cf::map::find $map;
		2765
		2766	unless ($map) {
		2767	($map, $x, $y) = @$EMERGENCY_POSITION;
		2768	$map = cf::map::find $map
		2769	or die "FATAL: cannot load emergency map\n";
		2770	}
		2771	}
		2772
		2773	($x, $y) = (-1, -1)
		2774	unless (defined $x) && (defined $y);
		2775
		2776	# use -1 or undef as default coordinates, not 0, 0
		2777	($x, $y) = ($map->enter_x, $map->enter_y)
		2778	if $x <= 0 && $y <= 0;
		2779
		2780	$map->load;
		2781	$map->load_neighbours;
		2782
		2783	return unless $self->contr->active;
		2784
		2785	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2786	if ($self->enter_map ($map, $x, $y)) {
		2787	# entering was successful
		2788	delete $self->{_link_recursion};
		2789	# only activate afterwards, to support waiting in hooks
		2790	$self->activate_recursive;
		2791	}
		2792
		2793	}
		2794
		2795	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2796
		2797	Moves the player to the given map-path and coordinates by first freezing
		2798	her, loading and preparing them map, calling the provided $check callback
		2799	that has to return the map if sucecssful, and then unfreezes the player on
		2800	the new (success) or old (failed) map position. In either case, $done will
		2801	be called at the end of this process.
		2802
		2803	Note that $check will be called with a potentially non-loaded map, so if
		2804	it needs a loaded map it has to call C<< ->load >>.
		2805
		2806	=cut
		2807
		2808	our $GOTOGEN;
		2809
		2810	sub cf::object::player::goto {
		2811	my ($self, $path, $x, $y, $check, $done) = @_;
		2812
		2813	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2814	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2815	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2816	($path, $x, $y) = @$EMERGENCY_POSITION;
		2817	}
		2818
		2819	# do generation counting so two concurrent goto's will be executed in-order
		2820	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2821
		2822	$self->enter_link;
		2823
		2824	(async {
		2825	$Coro::current->{desc} = "player::goto $path $x $y";
		2826
		2827	# *tag paths override both path and x|y
		2828	if ($path =~ /^\*(.*)$/) {
		2829	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2830	my $ob = $obs[rand @obs];
		2831
		2832	# see if we actually can go there
		2833	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2834	$ob = $obs[rand @obs];
		2835	} else {
		2836	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2837	}
		2838	# else put us there anyways for now #d#
		2839
		2840	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2841	} else {
		2842	($path, $x, $y) = (undef, undef, undef);
		2843	}
		2844	}
		2845
		2846	my $map = eval {
		2847	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2848
		2849	if ($map) {
		2850	$map = $map->customise_for ($self);
		2851	$map = $check->($map, $x, $y, $self) if $check && $map;
		2852	} else {
		2853	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2854	}
		2855
		2856	$map
		2857	};
		2858
		2859	if ($@) {
		2860	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2861	LOG llevError | logBacktrace, Carp::longmess $@;
		2862	}
		2863
		2864	if ($gen == $self->{_goto_generation}) {
		2865	delete $self->{_goto_generation};
		2866	$self->leave_link ($map, $x, $y);
		2867	}
		2868
		2869	$done->($self) if $done;
		2870	})->prio (1);
		2871	}
		2872
		2873	=item $player_object->enter_exit ($exit_object)
		2874
		2875	=cut
		2876
		2877	sub parse_random_map_params {
		2878	my ($spec) = @_;
		2879
		2880	my $rmp = { # defaults
		2881	xsize => (cf::rndm 15, 40),
		2882	ysize => (cf::rndm 15, 40),
		2883	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2884	#layout => string,
786	}	2885	};
787	}
788		2886
		2887	for (split /\n/, $spec) {
		2888	my ($k, $v) = split /\s+/, $_, 2;
		2889
		2890	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2891	}
		2892
		2893	$rmp
		2894	}
		2895
		2896	sub prepare_random_map {
		2897	my ($exit) = @_;
		2898
		2899	# all this does is basically replace the /! path by
		2900	# a new random map path (?random/...) with a seed
		2901	# that depends on the exit object
		2902
		2903	my $rmp = parse_random_map_params $exit->msg;
		2904
		2905	if ($exit->map) {
		2906	$rmp->{region} = $exit->region->name;
		2907	$rmp->{origin_map} = $exit->map->path;
		2908	$rmp->{origin_x} = $exit->x;
		2909	$rmp->{origin_y} = $exit->y;
		2910
		2911	$exit->map->touch;
		2912	}
		2913
		2914	$rmp->{random_seed} ||= $exit->random_seed;
		2915
		2916	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2917	my $md5 = Digest::MD5::md5_hex $data;
		2918	my $meta = "$RANDOMDIR/$md5.meta";
		2919
		2920	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2921	aio_write $fh, 0, (length $data), $data, 0;
		2922	undef $fh;
		2923	aio_rename "$meta~", $meta;
		2924
		2925	my $slaying = "?random/$md5";
		2926
		2927	if ($exit->valid) {
		2928	$exit->slaying ("?random/$md5");
		2929	$exit->msg (undef);
		2930	}
		2931	}
		2932	}
		2933
		2934	sub cf::object::player::enter_exit {
		2935	my ($self, $exit) = @_;
		2936
		2937	return unless $self->type == cf::PLAYER;
		2938
		2939	$self->enter_link;
		2940
		2941	(async {
		2942	$Coro::current->{desc} = "enter_exit";
		2943
		2944	unless (eval {
		2945	$self->deactivate_recursive; # just to be sure
		2946
		2947	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2948	my $x = $exit->stats->hp;
		2949	my $y = $exit->stats->sp;
		2950
		2951	# special map handling
		2952	my $slaying = $exit->slaying;
		2953
		2954	# special map handling
		2955	if ($slaying eq "/!") {
		2956	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2957
		2958	prepare_random_map $exit
		2959	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		2960
		2961	$map = $exit->slaying;
		2962
		2963	} elsif ($slaying eq '!up') {
		2964	$map = $exit->map->tile_path (cf::TILE_UP);
		2965	$x = $exit->x;
		2966	$y = $exit->y;
		2967
		2968	} elsif ($slaying eq '!down') {
		2969	$map = $exit->map->tile_path (cf::TILE_DOWN);
		2970	$x = $exit->x;
		2971	$y = $exit->y;
		2972	}
		2973
		2974	$self->goto ($map, $x, $y);
		2975
		2976	# if exit is damned, update players death & WoR home-position
		2977	$self->contr->savebed ($map, $x, $y)
		2978	if $exit->flag (cf::FLAG_DAMNED);
		2979
		2980	1
		2981	}) {
		2982	$self->message ("Something went wrong deep within the deliantra server. "
		2983	. "I'll try to bring you back to the map you were before. "
		2984	. "Please report this to the dungeon master!",
		2985	cf::NDI_UNIQUE | cf::NDI_RED);
		2986
		2987	error "ERROR in enter_exit: $@";
		2988	$self->leave_link;
		2989	}
		2990	})->prio (1);
		2991	}
		2992
		2993	=head3 cf::client
		2994
		2995	=over 4
		2996
		2997	=item $client->send_drawinfo ($text, $flags)
		2998
		2999	Sends a drawinfo packet to the client. Circumvents output buffering so
		3000	should not be used under normal circumstances.
		3001
		3002	=cut
		3003
		3004	sub cf::client::send_drawinfo {
		3005	my ($self, $text, $flags) = @_;
		3006
		3007	utf8::encode $text;
		3008	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		3009	}
		3010
		3011	=item $client->send_big_packet ($pkt)
		3012
		3013	Like C<send_packet>, but tries to compress large packets, and fragments
		3014	them as required.
		3015
		3016	=cut
		3017
		3018	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3019
		3020	sub cf::client::send_big_packet {
		3021	my ($self, $pkt) = @_;
		3022
		3023	# try lzf for large packets
		3024	$pkt = "lzf " . Compress::LZF::compress $pkt
		3025	if 1024 <= length $pkt and $self->{can_lzf};
		3026
		3027	# split very large packets
		3028	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3029	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3030	$pkt = "frag";
		3031	}
		3032
		3033	$self->send_packet ($pkt);
		3034	}
		3035
		3036	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3037
		3038	Send a drawinfo or msg packet to the client, formatting the msg for the
		3039	client if neccessary. C<$type> should be a string identifying the type of
		3040	the message, with C<log> being the default. If C<$color> is negative, suppress
		3041	the message unless the client supports the msg packet.
		3042
		3043	=cut
		3044
		3045	# non-persistent channels (usually the info channel)
		3046	our %CHANNEL = (
		3047	"c/motd" => {
		3048	id => "infobox",
		3049	title => "MOTD",
		3050	reply => undef,
		3051	tooltip => "The message of the day",
		3052	},
		3053	"c/identify" => {
		3054	id => "infobox",
		3055	title => "Identify",
		3056	reply => undef,
		3057	tooltip => "Items recently identified",
		3058	},
		3059	"c/examine" => {
		3060	id => "infobox",
		3061	title => "Examine",
		3062	reply => undef,
		3063	tooltip => "Signs and other items you examined",
		3064	},
		3065	"c/shopinfo" => {
		3066	id => "infobox",
		3067	title => "Shop Info",
		3068	reply => undef,
		3069	tooltip => "What your bargaining skill tells you about the shop",
		3070	},
		3071	"c/book" => {
		3072	id => "infobox",
		3073	title => "Book",
		3074	reply => undef,
		3075	tooltip => "The contents of a note or book",
		3076	},
		3077	"c/lookat" => {
		3078	id => "infobox",
		3079	title => "Look",
		3080	reply => undef,
		3081	tooltip => "What you saw there",
		3082	},
		3083	"c/who" => {
		3084	id => "infobox",
		3085	title => "Players",
		3086	reply => undef,
		3087	tooltip => "Shows players who are currently online",
		3088	},
		3089	"c/body" => {
		3090	id => "infobox",
		3091	title => "Body Parts",
		3092	reply => undef,
		3093	tooltip => "Shows which body parts you posess and are available",
		3094	},
		3095	"c/statistics" => {
		3096	id => "infobox",
		3097	title => "Statistics",
		3098	reply => undef,
		3099	tooltip => "Shows your primary statistics",
		3100	},
		3101	"c/skills" => {
		3102	id => "infobox",
		3103	title => "Skills",
		3104	reply => undef,
		3105	tooltip => "Shows your experience per skill and item power",
		3106	},
		3107	"c/shopitems" => {
		3108	id => "infobox",
		3109	title => "Shop Items",
		3110	reply => undef,
		3111	tooltip => "Shows the items currently for sale in this shop",
		3112	},
		3113	"c/resistances" => {
		3114	id => "infobox",
		3115	title => "Resistances",
		3116	reply => undef,
		3117	tooltip => "Shows your resistances",
		3118	},
		3119	"c/pets" => {
		3120	id => "infobox",
		3121	title => "Pets",
		3122	reply => undef,
		3123	tooltip => "Shows information abotu your pets/a specific pet",
		3124	},
		3125	"c/perceiveself" => {
		3126	id => "infobox",
		3127	title => "Perceive Self",
		3128	reply => undef,
		3129	tooltip => "You gained detailed knowledge about yourself",
		3130	},
		3131	"c/uptime" => {
		3132	id => "infobox",
		3133	title => "Uptime",
		3134	reply => undef,
		3135	tooltip => "How long the server has been running since last restart",
		3136	},
		3137	"c/mapinfo" => {
		3138	id => "infobox",
		3139	title => "Map Info",
		3140	reply => undef,
		3141	tooltip => "Information related to the maps",
		3142	},
		3143	"c/party" => {
		3144	id => "party",
		3145	title => "Party",
		3146	reply => "gsay ",
		3147	tooltip => "Messages and chat related to your party",
		3148	},
		3149	"c/death" => {
		3150	id => "death",
		3151	title => "Death",
		3152	reply => undef,
		3153	tooltip => "Reason for and more info about your most recent death",
		3154	},
		3155	"c/say" => $SAY_CHANNEL,
		3156	"c/chat" => $CHAT_CHANNEL,
		3157	);
		3158
		3159	sub cf::client::send_msg {
		3160	my ($self, $channel, $msg, $color, @extra) = @_;
		3161
		3162	$msg = $self->pl->expand_cfpod ($msg)
		3163	unless $color & cf::NDI_VERBATIM;
		3164
		3165	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3166
		3167	# check predefined channels, for the benefit of C
		3168	if ($CHANNEL{$channel}) {
		3169	$channel = $CHANNEL{$channel};
		3170
		3171	$self->ext_msg (channel_info => $channel);
		3172	$channel = $channel->{id};
		3173
		3174	} elsif (ref $channel) {
		3175	# send meta info to client, if not yet sent
		3176	unless (exists $self->{channel}{$channel->{id}}) {
		3177	$self->{channel}{$channel->{id}} = $channel;
		3178	$self->ext_msg (channel_info => $channel);
		3179	}
		3180
		3181	$channel = $channel->{id};
		3182	}
		3183
		3184	return unless @extra || length $msg;
		3185
		3186	# default colour, mask it out
		3187	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3188	if $color & cf::NDI_DEF;
		3189
		3190	my $pkt = "msg "
		3191	. $self->{json_coder}->encode (
		3192	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3193	);
		3194
		3195	$self->send_big_packet ($pkt);
		3196	}
		3197
		3198	=item $client->ext_msg ($type, @msg)
		3199
		3200	Sends an ext event to the client.
		3201
		3202	=cut
		3203
		3204	sub cf::client::ext_msg($$@) {
		3205	my ($self, $type, @msg) = @_;
		3206
		3207	if ($self->extcmd == 2) {
		3208	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3209	} elsif ($self->extcmd == 1) { # TODO: remove
		3210	push @msg, msgtype => "event_$type";
		3211	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3212	}
		3213	}
		3214
789	=item $player->ext_reply ($msgid, $msgtype, %msg)	3215	=item $client->ext_reply ($msgid, @msg)
790		3216
791	Sends an ext reply to the player.	3217	Sends an ext reply to the client.
792		3218
793	=cut	3219	=cut
794		3220
795	sub cf::player::ext_reply($$$%) {	3221	sub cf::client::ext_reply($$@) {
796	my ($self, $id, %msg) = @_;	3222	my ($self, $id, @msg) = @_;
797		3223
798	$msg{msgid} = $id;	3224	if ($self->extcmd == 2) {
799		3225	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
800	$self->send ("ext " . to_json \%msg);	3226	} elsif ($self->extcmd == 1) {
		3227	#TODO: version 1, remove
		3228	unshift @msg, msgtype => "reply", msgid => $id;
		3229	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3230	}
801	}	3231	}
802		3232
803	#############################################################################	3233	=item $success = $client->query ($flags, "text", \&cb)
804	# map scripting support	3234
		3235	Queues a query to the client, calling the given callback with
		3236	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3237	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3238
		3239	Queries can fail, so check the return code. Or don't, as queries will
		3240	become reliable at some point in the future.
		3241
		3242	=cut
		3243
		3244	sub cf::client::query {
		3245	my ($self, $flags, $text, $cb) = @_;
		3246
		3247	return unless $self->state == ST_PLAYING
		3248	|| $self->state == ST_SETUP
		3249	|| $self->state == ST_CUSTOM;
		3250
		3251	$self->state (ST_CUSTOM);
		3252
		3253	utf8::encode $text;
		3254	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3255
		3256	$self->send_packet ($self->{query_queue}[0][0])
		3257	if @{ $self->{query_queue} } == 1;
		3258
		3259	1
		3260	}
		3261
		3262	cf::client->attach (
		3263	on_connect => sub {
		3264	my ($ns) = @_;
		3265
		3266	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3267	},
		3268	on_reply => sub {
		3269	my ($ns, $msg) = @_;
		3270
		3271	# this weird shuffling is so that direct followup queries
		3272	# get handled first
		3273	my $queue = delete $ns->{query_queue}
		3274	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3275
		3276	(shift @$queue)->[1]->($msg);
		3277	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3278
		3279	push @{ $ns->{query_queue} }, @$queue;
		3280
		3281	if (@{ $ns->{query_queue} } == @$queue) {
		3282	if (@$queue) {
		3283	$ns->send_packet ($ns->{query_queue}[0][0]);
		3284	} else {
		3285	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3286	}
		3287	}
		3288	},
		3289	on_exticmd => sub {
		3290	my ($ns, $buf) = @_;
		3291
		3292	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3293
		3294	if (ref $msg) {
		3295	my ($type, $reply, @payload) =
		3296	"ARRAY" eq ref $msg
		3297	? @$msg
		3298	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3299
		3300	my @reply;
		3301
		3302	if (my $cb = $EXTICMD{$type}) {
		3303	@reply = $cb->($ns, @payload);
		3304	}
		3305
		3306	$ns->ext_reply ($reply, @reply)
		3307	if $reply;
		3308
		3309	} else {
		3310	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3311	}
		3312
		3313	cf::override;
		3314	},
		3315	);
		3316
		3317	=item $client->async (\&cb)
		3318
		3319	Create a new coroutine, running the specified callback. The coroutine will
		3320	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3321	or loss of connection).
		3322
		3323	=cut
		3324
		3325	sub cf::client::async {
		3326	my ($self, $cb) = @_;
		3327
		3328	my $coro = &Coro::async ($cb);
		3329
		3330	$coro->on_destroy (sub {
		3331	delete $self->{_coro}{$coro+0};
		3332	});
		3333
		3334	$self->{_coro}{$coro+0} = $coro;
		3335
		3336	$coro
		3337	}
		3338
		3339	cf::client->attach (
		3340	on_client_destroy => sub {
		3341	my ($ns) = @_;
		3342
		3343	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3344	},
		3345	);
		3346
		3347	=back
		3348
		3349
		3350	=head2 SAFE SCRIPTING
		3351
		3352	Functions that provide a safe environment to compile and execute
		3353	snippets of perl code without them endangering the safety of the server
		3354	itself. Looping constructs, I/O operators and other built-in functionality
		3355	is not available in the safe scripting environment, and the number of
		3356	functions and methods that can be called is greatly reduced.
		3357
		3358	=cut
805		3359
806	our $safe = new Safe "safe";	3360	our $safe = new Safe "safe";
807	our $safe_hole = new Safe::Hole;	3361	our $safe_hole = new Safe::Hole;
808		3362
809	$SIG{FPE} = 'IGNORE';	3363	$SIG{FPE} = 'IGNORE';
810		3364
811	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3365	$safe->permit_only (Opcode::opset qw(
		3366	:base_core :base_mem :base_orig :base_math :base_loop
		3367	grepstart grepwhile mapstart mapwhile
		3368	sort time
		3369	));
812		3370
813	# here we export the classes and methods available to script code	3371	# here we export the classes and methods available to script code
814		3372
		3373	=pod
		3374
		3375	The following functions and methods are available within a safe environment:
		3376
		3377	cf::object
		3378	contr pay_amount pay_player map x y force_find force_add destroy
		3379	insert remove name archname title slaying race decrease split
		3380	value
		3381
		3382	cf::object::player
		3383	player
		3384
		3385	cf::player
		3386	peaceful
		3387
		3388	cf::map
		3389	trigger
		3390
		3391	=cut
		3392
815	for (	3393	for (
816	["cf::object" => qw(contr pay_amount pay_player)],	3394	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3395	insert remove inv nrof name archname title slaying race
		3396	decrease split destroy change_exp value msg lore send_msg)],
817	["cf::object::player" => qw(player)],	3397	["cf::object::player" => qw(player)],
818	["cf::player" => qw(peaceful)],	3398	["cf::player" => qw(peaceful send_msg)],
		3399	["cf::map" => qw(trigger)],
819	) {	3400	) {
820	no strict 'refs';
821	my ($pkg, @funs) = @$_;	3401	my ($pkg, @funs) = @$_;
822	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3402	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
823	for @funs;	3403	for @funs;
824	}	3404	}
825		3405
		3406	=over 4
		3407
		3408	=item @retval = safe_eval $code, [var => value, ...]
		3409
		3410	Compiled and executes the given perl code snippet. additional var/value
		3411	pairs result in temporary local (my) scalar variables of the given name
		3412	that are available in the code snippet. Example:
		3413
		3414	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3415
		3416	=cut
		3417
826	sub safe_eval($;@) {	3418	sub safe_eval($;@) {
827	my ($code, %vars) = @_;	3419	my ($code, %vars) = @_;
828		3420
829	my $qcode = $code;	3421	my $qcode = $code;
830	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3422	$qcode =~ s/"/‟/g; # not allowed in #line filenames
831	$qcode =~ s/\n/\\n/g;	3423	$qcode =~ s/\n/\\n/g;
832		3424
		3425	%vars = (_dummy => 0) unless %vars;
		3426
		3427	my @res;
833	local $_;	3428	local $_;
834	local @safe::cf::_safe_eval_args = values %vars;
835		3429
836	my $eval =	3430	my $eval =
837	"do {\n"	3431	"do {\n"
838	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3432	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
839	. "#line 0 \"{$qcode}\"\n"	3433	. "#line 0 \"{$qcode}\"\n"
840	. $code	3434	. $code
841	. "\n}"	3435	. "\n}"
842	;	3436	;
843		3437
		3438	if ($CFG{safe_eval}) {
844	sub_generation_inc;	3439	sub_generation_inc;
		3440	local @safe::cf::_safe_eval_args = values %vars;
845	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3441	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
846	sub_generation_inc;	3442	sub_generation_inc;
		3443	} else {
		3444	local @cf::_safe_eval_args = values %vars;
		3445	@res = wantarray ? eval eval : scalar eval $eval;
		3446	}
847		3447
848	if ($@) {	3448	if ($@) {
849	warn "$@";	3449	warn "$@",
850	warn "while executing safe code '$code'\n";	3450	"while executing safe code '$code'\n",
851	warn "with arguments " . (join " ", %vars) . "\n";	3451	"with arguments " . (join " ", %vars) . "\n";
852	}	3452	}
853		3453
854	wantarray ? @res : $res[0]	3454	wantarray ? @res : $res[0]
855	}	3455	}
		3456
		3457	=item cf::register_script_function $function => $cb
		3458
		3459	Register a function that can be called from within map/npc scripts. The
		3460	function should be reasonably secure and should be put into a package name
		3461	like the extension.
		3462
		3463	Example: register a function that gets called whenever a map script calls
		3464	C<rent::overview>, as used by the C<rent> extension.
		3465
		3466	cf::register_script_function "rent::overview" => sub {
		3467	...
		3468	};
		3469
		3470	=cut
856		3471
857	sub register_script_function {	3472	sub register_script_function {
858	my ($fun, $cb) = @_;	3473	my ($fun, $cb) = @_;
859		3474
860	no strict 'refs';	3475	$fun = "safe::$fun" if $CFG{safe_eval};
861	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3476	*$fun = $safe_hole->wrap ($cb);
862	}	3477	}
		3478
		3479	=back
		3480
		3481	=cut
863		3482
864	#############################################################################	3483	#############################################################################
865	# the server's main()	3484	# the server's init and main functions
		3485
		3486	sub load_facedata($) {
		3487	my ($path) = @_;
		3488
		3489	# HACK to clear player env face cache, we need some signal framework
		3490	# for this (global event?)
		3491	%ext::player_env::MUSIC_FACE_CACHE = ();
		3492
		3493	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3494
		3495	trace "loading facedata from $path\n";
		3496
		3497	my $facedata = decode_storable load_file $path;
		3498
		3499	$facedata->{version} == 2
		3500	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3501
		3502	# patch in the exptable
		3503	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3504	$facedata->{resource}{"res/exp_table"} = {
		3505	type => FT_RSRC,
		3506	data => $exp_table,
		3507	hash => (Digest::MD5::md5 $exp_table),
		3508	};
		3509	cf::cede_to_tick;
		3510
		3511	{
		3512	my $faces = $facedata->{faceinfo};
		3513
		3514	while (my ($face, $info) = each %$faces) {
		3515	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3516
		3517	cf::face::set_visibility $idx, $info->{visibility};
		3518	cf::face::set_magicmap $idx, $info->{magicmap};
		3519	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3520	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3521	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3522
		3523	cf::cede_to_tick;
		3524	}
		3525
		3526	while (my ($face, $info) = each %$faces) {
		3527	next unless $info->{smooth};
		3528
		3529	my $idx = cf::face::find $face
		3530	or next;
		3531
		3532	if (my $smooth = cf::face::find $info->{smooth}) {
		3533	cf::face::set_smooth $idx, $smooth;
		3534	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3535	} else {
		3536	error "smooth face '$info->{smooth}' not found for face '$face'";
		3537	}
		3538
		3539	cf::cede_to_tick;
		3540	}
		3541	}
		3542
		3543	{
		3544	my $anims = $facedata->{animinfo};
		3545
		3546	while (my ($anim, $info) = each %$anims) {
		3547	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3548	cf::cede_to_tick;
		3549	}
		3550
		3551	cf::anim::invalidate_all; # d'oh
		3552	}
		3553
		3554	{
		3555	my $res = $facedata->{resource};
		3556
		3557	while (my ($name, $info) = each %$res) {
		3558	if (defined $info->{type}) {
		3559	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3560
		3561	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3562	cf::face::set_type $idx, $info->{type};
		3563	} else {
		3564	$RESOURCE{$name} = $info; # unused
		3565	}
		3566
		3567	cf::cede_to_tick;
		3568	}
		3569	}
		3570
		3571	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3572
		3573	1
		3574	}
		3575
		3576	register_exticmd fx_want => sub {
		3577	my ($ns, $want) = @_;
		3578
		3579	while (my ($k, $v) = each %$want) {
		3580	$ns->fx_want ($k, $v);
		3581	}
		3582	};
		3583
		3584	sub load_resource_file($) {
		3585	my $guard = lock_acquire "load_resource_file";
		3586
		3587	my $status = load_resource_file_ $_[0];
		3588	get_slot 0.1, 100;
		3589	cf::arch::commit_load;
		3590
		3591	$status
		3592	}
		3593
		3594	sub reload_regions {
		3595	# HACK to clear player env face cache, we need some signal framework
		3596	# for this (global event?)
		3597	%ext::player_env::MUSIC_FACE_CACHE = ();
		3598
		3599	load_resource_file "$MAPDIR/regions"
		3600	or die "unable to load regions file\n";
		3601
		3602	for (cf::region::list) {
		3603	$_->{match} = qr/$_->{match}/
		3604	if exists $_->{match};
		3605	}
		3606	}
		3607
		3608	sub reload_facedata {
		3609	load_facedata "$DATADIR/facedata"
		3610	or die "unable to load facedata\n";
		3611	}
		3612
		3613	sub reload_archetypes {
		3614	load_resource_file "$DATADIR/archetypes"
		3615	or die "unable to load archetypes\n";
		3616	}
		3617
		3618	sub reload_treasures {
		3619	load_resource_file "$DATADIR/treasures"
		3620	or die "unable to load treasurelists\n";
		3621	}
		3622
		3623	sub reload_sound {
		3624	trace "loading sound config from $DATADIR/sound\n";
		3625
		3626	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3627
		3628	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3629	my $sound = $soundconf->{compat}[$_]
		3630	or next;
		3631
		3632	my $face = cf::face::find "sound/$sound->[1]";
		3633	cf::sound::set $sound->[0] => $face;
		3634	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3635	}
		3636
		3637	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3638	my $face = cf::face::find "sound/$v";
		3639	cf::sound::set $k => $face;
		3640	}
		3641	}
		3642
		3643	sub reload_resources {
		3644	trace "reloading resource files...\n";
		3645
		3646	reload_exp_table;
		3647	reload_materials;
		3648	reload_facedata;
		3649	reload_sound;
		3650	reload_archetypes;
		3651	reload_regions;
		3652	reload_treasures;
		3653
		3654	trace "finished reloading resource files\n";
		3655	}
		3656
		3657	sub reload_config {
		3658	trace "reloading config file...\n";
		3659
		3660	my $config = load_file "$CONFDIR/config";
		3661	utf8::decode $config;
		3662	*CFG = decode_yaml $config;
		3663
		3664	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3665
		3666	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3667	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3668
		3669	if (exists $CFG{mlockall}) {
		3670	eval {
		3671	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3672	and die "WARNING: m(un)lockall failed: $!\n";
		3673	};
		3674	warn $@ if $@;
		3675	}
		3676	}
		3677
		3678	sub pidfile() {
		3679	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3680	or die "$PIDFILE: $!";
		3681	flock $fh, &Fcntl::LOCK_EX
		3682	or die "$PIDFILE: flock: $!";
		3683	$fh
		3684	}
		3685
		3686	# make sure only one server instance is running at any one time
		3687	sub atomic {
		3688	my $fh = pidfile;
		3689
		3690	my $pid = <$fh>;
		3691	kill 9, $pid if $pid > 0;
		3692
		3693	seek $fh, 0, 0;
		3694	print $fh $$;
		3695	}
		3696
		3697	sub main_loop {
		3698	trace "EV::loop starting\n";
		3699	if (1) {
		3700	EV::loop;
		3701	}
		3702	trace "EV::loop returned\n";
		3703	goto &main_loop unless $REALLY_UNLOOP;
		3704	}
866		3705
867	sub main {	3706	sub main {
868	Event::loop;	3707	cf::init_globals; # initialise logging
		3708
		3709	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3710	LOG llevInfo, "Copyright (C) 2005-2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3711	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3712	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3713
		3714	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3715
		3716	# we must not ever block the main coroutine
		3717	local $Coro::idle = sub {
		3718	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3719	(async {
		3720	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3721	EV::loop EV::LOOP_ONESHOT;
		3722	})->prio (Coro::PRIO_MAX);
		3723	};
		3724
		3725	evthread_start IO::AIO::poll_fileno;
		3726
		3727	cf::sync_job {
		3728	cf::incloader::init ();
		3729
		3730	cf::init_anim;
		3731	cf::init_attackmess;
		3732	cf::init_dynamic;
		3733
		3734	cf::load_settings;
		3735
		3736	reload_resources;
		3737	reload_config;
		3738	db_init;
		3739
		3740	cf::init_uuid;
		3741	cf::init_signals;
		3742	cf::init_skills;
		3743
		3744	cf::init_beforeplay;
		3745
		3746	atomic;
		3747
		3748	load_extensions;
		3749
		3750	utime time, time, $RUNTIMEFILE;
		3751
		3752	# no (long-running) fork's whatsoever before this point(!)
		3753	use POSIX ();
		3754	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3755
		3756	cf::_post_init 0;
		3757	};
		3758
		3759	cf::object::thawer::errors_are_fatal 0;
		3760	info "parse errors in files are no longer fatal from this point on.\n";
		3761
		3762	my $free_main; $free_main = EV::idle sub {
		3763	undef $free_main;
		3764	undef &main; # free gobs of memory :)
		3765	};
		3766
		3767	goto &main_loop;
869	}	3768	}
870		3769
871	#############################################################################	3770	#############################################################################
872	# initialisation	3771	# initialisation and cleanup
873		3772
874	register "<global>", __PACKAGE__;	3773	# install some emergency cleanup handlers
875		3774	BEGIN {
876	unshift @INC, $LIBDIR;	3775	our %SIGWATCHER = ();
877		3776	for my $signal (qw(INT HUP TERM)) {
878	load_extensions;	3777	$SIGWATCHER{$signal} = AE::signal $signal, sub {
879		3778	cf::cleanup "SIG$signal";
880	$TICK_WATCHER = Event->timer (	3779	};
881	prio => 1,
882	at => $NEXT_TICK || 1,
883	cb => sub {
884	cf::server_tick; # one server iteration
885
886	my $NOW = Event::time;
887	$NEXT_TICK += $TICK;
888
889	# if we are delayed by four ticks, skip them all
890	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
891
892	$TICK_WATCHER->at ($NEXT_TICK);
893	$TICK_WATCHER->start;
894	},	3780	}
895	);	3781	}
896		3782
897	_reload_2;	3783	sub write_runtime_sync {
		3784	my $t0 = AE::time;
		3785
		3786	# first touch the runtime file to show we are still running:
		3787	# the fsync below can take a very very long time.
		3788
		3789	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3790
		3791	my $guard = cf::lock_acquire "write_runtime";
		3792
		3793	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3794	or return;
		3795
		3796	my $value = $cf::RUNTIME + 90 + 10;
		3797	# 10 is the runtime save interval, for a monotonic clock
		3798	# 60 allows for the watchdog to kill the server.
		3799
		3800	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3801	and return;
		3802
		3803	# always fsync - this file is important
		3804	aio_fsync $fh
		3805	and return;
		3806
		3807	# touch it again to show we are up-to-date
		3808	aio_utime $fh, undef, undef;
		3809
		3810	close $fh
		3811	or return;
		3812
		3813	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3814	and return;
		3815
		3816	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3817
		3818	1
		3819	}
		3820
		3821	our $uuid_lock;
		3822	our $uuid_skip;
		3823
		3824	sub write_uuid_sync($) {
		3825	$uuid_skip ||= $_[0];
		3826
		3827	return if $uuid_lock;
		3828	local $uuid_lock = 1;
		3829
		3830	my $uuid = "$LOCALDIR/uuid";
		3831
		3832	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3833	or return;
		3834
		3835	my $value = uuid_seq uuid_cur;
		3836
		3837	unless ($value) {
		3838	info "cowardly refusing to write zero uuid value!\n";
		3839	return;
		3840	}
		3841
		3842	my $value = uuid_str $value + $uuid_skip;
		3843	$uuid_skip = 0;
		3844
		3845	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3846	and return;
		3847
		3848	# always fsync - this file is important
		3849	aio_fsync $fh
		3850	and return;
		3851
		3852	close $fh
		3853	or return;
		3854
		3855	aio_rename "$uuid~", $uuid
		3856	and return;
		3857
		3858	trace "uuid file written ($value).\n";
		3859
		3860	1
		3861
		3862	}
		3863
		3864	sub write_uuid($$) {
		3865	my ($skip, $sync) = @_;
		3866
		3867	$sync ? write_uuid_sync $skip
		3868	: async { write_uuid_sync $skip };
		3869	}
		3870
		3871	sub emergency_save() {
		3872	my $freeze_guard = cf::freeze_mainloop;
		3873
		3874	info "emergency_perl_save: enter\n";
		3875
		3876	# this is a trade-off: we want to be very quick here, so
		3877	# save all maps without fsync, and later call a global sync
		3878	# (which in turn might be very very slow)
		3879	local $USE_FSYNC = 0;
		3880
		3881	cf::sync_job {
		3882	cf::write_runtime_sync; # external watchdog should not bark
		3883
		3884	# use a peculiar iteration method to avoid tripping on perl
		3885	# refcount bugs in for. also avoids problems with players
		3886	# and maps saved/destroyed asynchronously.
		3887	info "emergency_perl_save: begin player save\n";
		3888	for my $login (keys %cf::PLAYER) {
		3889	my $pl = $cf::PLAYER{$login} or next;
		3890	$pl->valid or next;
		3891	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3892	$pl->save;
		3893	}
		3894	info "emergency_perl_save: end player save\n";
		3895
		3896	cf::write_runtime_sync; # external watchdog should not bark
		3897
		3898	info "emergency_perl_save: begin map save\n";
		3899	for my $path (keys %cf::MAP) {
		3900	my $map = $cf::MAP{$path} or next;
		3901	$map->valid or next;
		3902	$map->save;
		3903	}
		3904	info "emergency_perl_save: end map save\n";
		3905
		3906	cf::write_runtime_sync; # external watchdog should not bark
		3907
		3908	info "emergency_perl_save: begin database checkpoint\n";
		3909	BDB::db_env_txn_checkpoint $DB_ENV;
		3910	info "emergency_perl_save: end database checkpoint\n";
		3911
		3912	info "emergency_perl_save: begin write uuid\n";
		3913	write_uuid_sync 1;
		3914	info "emergency_perl_save: end write uuid\n";
		3915
		3916	cf::write_runtime_sync; # external watchdog should not bark
		3917
		3918	trace "emergency_perl_save: syncing database to disk";
		3919	BDB::db_env_txn_checkpoint $DB_ENV;
		3920
		3921	info "emergency_perl_save: starting sync\n";
		3922	IO::AIO::aio_sync sub {
		3923	info "emergency_perl_save: finished sync\n";
		3924	};
		3925
		3926	cf::write_runtime_sync; # external watchdog should not bark
		3927
		3928	trace "emergency_perl_save: flushing outstanding aio requests";
		3929	while (IO::AIO::nreqs || BDB::nreqs) {
		3930	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3931	}
		3932
		3933	cf::write_runtime_sync; # external watchdog should not bark
		3934	};
		3935
		3936	info "emergency_perl_save: leave\n";
		3937	}
		3938
		3939	sub post_cleanup {
		3940	my ($make_core) = @_;
		3941
		3942	IO::AIO::flush;
		3943
		3944	error Carp::longmess "post_cleanup backtrace"
		3945	if $make_core;
		3946
		3947	my $fh = pidfile;
		3948	unlink $PIDFILE if <$fh> == $$;
		3949	}
		3950
		3951	# a safer delete_package, copied from Symbol
		3952	sub clear_package($) {
		3953	my $pkg = shift;
		3954
		3955	# expand to full symbol table name if needed
		3956	unless ($pkg =~ /^main::.*::$/) {
		3957	$pkg = "main$pkg" if $pkg =~ /^::/;
		3958	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3959	$pkg .= '::' unless $pkg =~ /::$/;
		3960	}
		3961
		3962	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3963	my $stem_symtab = *{$stem}{HASH};
		3964
		3965	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3966	or return;
		3967
		3968	# clear all symbols
		3969	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3970	for my $name (keys %$leaf_symtab) {
		3971	_gv_clear *{"$pkg$name"};
		3972	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3973	}
		3974	}
		3975
		3976	sub do_reload_perl() {
		3977	# can/must only be called in main
		3978	unless (in_main) {
		3979	error "can only reload from main coroutine";
		3980	return;
		3981	}
		3982
		3983	return if $RELOAD++;
		3984
		3985	my $t1 = AE::time;
		3986
		3987	while ($RELOAD) {
		3988	cf::get_slot 0.1, -1, "reload_perl";
		3989	info "perl_reload: reloading...";
		3990
		3991	trace "perl_reload: entering sync_job";
		3992
		3993	cf::sync_job {
		3994	#cf::emergency_save;
		3995
		3996	trace "perl_reload: cancelling all extension coros";
		3997	$_->cancel for values %EXT_CORO;
		3998	%EXT_CORO = ();
		3999
		4000	trace "perl_reload: removing commands";
		4001	%COMMAND = ();
		4002
		4003	trace "perl_reload: removing ext/exti commands";
		4004	%EXTCMD = ();
		4005	%EXTICMD = ();
		4006
		4007	trace "perl_reload: unloading/nuking all extensions";
		4008	for my $pkg (@EXTS) {
		4009	trace "... unloading $pkg";
		4010
		4011	if (my $cb = $pkg->can ("unload")) {
		4012	eval {
		4013	$cb->($pkg);
		4014	1
		4015	} or error "$pkg unloaded, but with errors: $@";
		4016	}
		4017
		4018	trace "... clearing $pkg";
		4019	clear_package $pkg;
		4020	}
		4021
		4022	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4023	while (my ($k, $v) = each %INC) {
		4024	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4025
		4026	trace "... unloading $k";
		4027	delete $INC{$k};
		4028
		4029	$k =~ s/\.pm$//;
		4030	$k =~ s/\//::/g;
		4031
		4032	if (my $cb = $k->can ("unload_module")) {
		4033	$cb->();
		4034	}
		4035
		4036	clear_package $k;
		4037	}
		4038
		4039	trace "perl_reload: getting rid of safe::, as good as possible";
		4040	clear_package "safe::$_"
		4041	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4042
		4043	trace "perl_reload: unloading cf.pm \"a bit\"";
		4044	delete $INC{"cf.pm"};
		4045	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4046
		4047	# don't, removes xs symbols, too,
		4048	# and global variables created in xs
		4049	#clear_package __PACKAGE__;
		4050
		4051	info "perl_reload: unload completed, starting to reload now";
		4052
		4053	trace "perl_reload: reloading cf.pm";
		4054	require cf;
		4055	cf::_connect_to_perl_1;
		4056
		4057	trace "perl_reload: loading config and database again";
		4058	cf::reload_config;
		4059
		4060	trace "perl_reload: loading extensions";
		4061	cf::load_extensions;
		4062
		4063	if ($REATTACH_ON_RELOAD) {
		4064	trace "perl_reload: reattaching attachments to objects/players";
		4065	_global_reattach; # objects, sockets
		4066	trace "perl_reload: reattaching attachments to maps";
		4067	reattach $_ for values %MAP;
		4068	trace "perl_reload: reattaching attachments to players";
		4069	reattach $_ for values %PLAYER;
		4070	}
		4071
		4072	cf::_post_init 1;
		4073
		4074	trace "perl_reload: leaving sync_job";
		4075
		4076	1
		4077	} or do {
		4078	error $@;
		4079	cf::cleanup "perl_reload: error, exiting.";
		4080	};
		4081
		4082	--$RELOAD;
		4083	}
		4084
		4085	$t1 = AE::time - $t1;
		4086	info "perl_reload: completed in ${t1}s\n";
		4087	};
		4088
		4089	our $RELOAD_WATCHER; # used only during reload
		4090
		4091	sub reload_perl() {
		4092	# doing reload synchronously and two reloads happen back-to-back,
		4093	# coro crashes during coro_state_free->destroy here.
		4094
		4095	$RELOAD_WATCHER ||= cf::async {
		4096	Coro::AIO::aio_wait cache_extensions;
		4097
		4098	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4099	do_reload_perl;
		4100	undef $RELOAD_WATCHER;
		4101	};
		4102	};
		4103	}
		4104
		4105	register_command "reload" => sub {
		4106	my ($who, $arg) = @_;
		4107
		4108	if ($who->flag (FLAG_WIZ)) {
		4109	$who->message ("reloading server.");
		4110	async {
		4111	$Coro::current->{desc} = "perl_reload";
		4112	reload_perl;
		4113	};
		4114	}
		4115	};
		4116
		4117	#############################################################################
		4118
		4119	my $bug_warning = 0;
		4120
		4121	sub wait_for_tick() {
		4122	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4123
		4124	$WAIT_FOR_TICK->wait;
		4125	}
		4126
		4127	sub wait_for_tick_begin() {
		4128	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4129
		4130	my $signal = new Coro::Signal;
		4131	push @WAIT_FOR_TICK_BEGIN, $signal;
		4132	$signal->wait;
		4133	}
		4134
		4135	sub tick {
		4136	if ($Coro::current != $Coro::main) {
		4137	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4138	unless ++$bug_warning > 10;
		4139	return;
		4140	}
		4141
		4142	cf::one_tick; # one server iteration
		4143
		4144	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4145
		4146	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4147	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4148	Coro::async_pool {
		4149	$Coro::current->{desc} = "runtime saver";
		4150	write_runtime_sync
		4151	or error "ERROR: unable to write runtime file: $!";
		4152	};
		4153	}
		4154
		4155	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4156	$sig->send;
		4157	}
		4158	$WAIT_FOR_TICK->broadcast;
		4159
		4160	$LOAD = ($NOW - $TICK_START) / $TICK;
		4161	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4162
		4163	if (0) {
		4164	if ($NEXT_TICK) {
		4165	my $jitter = $TICK_START - $NEXT_TICK;
		4166	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4167	debug "jitter $JITTER\n";#d#
		4168	}
		4169	}
		4170	}
		4171
		4172	{
		4173	# configure BDB
		4174
		4175	BDB::min_parallel 16;
		4176	BDB::max_poll_reqs $TICK * 0.1;
		4177	$AnyEvent::BDB::WATCHER->priority (1);
		4178
		4179	unless ($DB_ENV) {
		4180	$DB_ENV = BDB::db_env_create;
		4181	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4182	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4183	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4184	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4185	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4186
		4187	cf::sync_job {
		4188	eval {
		4189	BDB::db_env_open
		4190	$DB_ENV,
		4191	$BDBDIR,
		4192	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4193	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4194	0666;
		4195
		4196	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		4197	};
		4198
		4199	cf::cleanup "db_env_open(db): $@" if $@;
		4200	};
		4201	}
		4202
		4203	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		4204	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		4205	};
		4206	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		4207	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		4208	};
		4209	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4210	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4211	};
		4212	}
		4213
		4214	{
		4215	# configure IO::AIO
		4216
		4217	IO::AIO::min_parallel 8;
		4218	IO::AIO::max_poll_time $TICK * 0.1;
		4219	undef $AnyEvent::AIO::WATCHER;
		4220	}
		4221
		4222	our $_log_backtrace;
		4223	our $_log_backtrace_last;
		4224
		4225	sub _log_backtrace {
		4226	my ($msg, @addr) = @_;
		4227
		4228	$msg =~ s/\n$//;
		4229
		4230	if ($_log_backtrace_last eq $msg) {
		4231	LOG llevInfo, "[ABT] $msg\n";
		4232	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4233	# limit the # of concurrent backtraces
		4234	} elsif ($_log_backtrace < 2) {
		4235	$_log_backtrace_last = $msg;
		4236	++$_log_backtrace;
		4237	my $perl_bt = Carp::longmess $msg;
		4238	async {
		4239	$Coro::current->{desc} = "abt $msg";
		4240
		4241	my @bt = fork_call {
		4242	@addr = map { sprintf "%x", $_ } @addr;
		4243	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4244	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4245	or die "addr2line: $!";
		4246
		4247	my @funcs;
		4248	my @res = <$fh>;
		4249	chomp for @res;
		4250	while (@res) {
		4251	my ($func, $line) = splice @res, 0, 2, ();
		4252	push @funcs, "[$func] $line";
		4253	}
		4254
		4255	@funcs
		4256	};
		4257
		4258	LOG llevInfo, "[ABT] $perl_bt\n";
		4259	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4260	LOG llevInfo, "[ABT] $_\n" for @bt;
		4261	--$_log_backtrace;
		4262	};
		4263	} else {
		4264	LOG llevInfo, "[ABT] $msg\n";
		4265	LOG llevInfo, "[ABT] [overload, suppressed]\n";
		4266	}
		4267	}
		4268
		4269	# load additional modules
		4270	require "cf/$_.pm" for @EXTRA_MODULES;
		4271	cf::_connect_to_perl_2;
		4272
		4273	END { cf::emergency_save }
898		4274
899	1	4275	1
900		4276

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