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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.56 by root, Wed Aug 30 08:28:33 2006 UTC vs.
Revision 1.564 by elmex, Thu Apr 28 14:58:08 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;
		137	our $NOW;
		138
		139	our (%PLAYER, %PLAYER_LOADING); # all users
		140	our (%MAP, %MAP_LOADING ); # all maps
		141	our $LINK_MAP; # the special {link} map, which is always available
		142
		143	# used to convert map paths into valid unix filenames by replacing / by ∕
		144	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		145
		146	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		147	our $LOADAVG; # same thing, but with alpha-smoothing
		148	our $JITTER; # average jitter
		149	our $TICK_START; # for load detecting purposes
		150
		151	our @POST_INIT;
		152
		153	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		154	our $REALLY_UNLOOP; # never set to true, please :)
		155
		156	binmode STDOUT;
		157	binmode STDERR;
		158
		159	# read virtual server time, if available
		160	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		161	open my $fh, "<", $RUNTIMEFILE
		162	or die "unable to read $RUNTIMEFILE file: $!";
		163	$RUNTIME = <$fh> + 0.;
		164	}
		165
		166	eval "sub TICK() { $TICK } 1" or die;
		167
		168	mkdir $_
		169	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		170
		171	our $EMERGENCY_POSITION;
		172
		173	sub cf::map::normalise;
		174
		175	sub in_main() {
		176	$Coro::current == $Coro::main
		177	}
		178
		179	#############################################################################
		180
		181	%REFLECT = ();
		182	for (@REFLECT) {
		183	my $reflect = JSON::XS::decode_json $_;
		184	$REFLECT{$reflect->{class}} = $reflect;
		185	}
		186
		187	# this is decidedly evil
		188	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		189
		190	#############################################################################
		191
		192	=head2 GLOBAL VARIABLES
		193
		194	=over 4
		195
		196	=item $cf::UPTIME
		197
		198	The timestamp of the server start (so not actually an uptime).
		199
		200	=item $cf::RUNTIME
		201
		202	The time this server has run, starts at 0 and is increased by $cf::TICK on
		203	every server tick.
		204
		205	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		206	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		207	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		208
		209	Various directories - "/etc", read-only install directory, perl-library
		210	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		211	unique-items directory, player file directory, random maps directory and
		212	database environment.
		213
		214	=item $cf::NOW
		215
		216	The time of the last (current) server tick.
		217
		218	=item $cf::TICK
		219
		220	The interval between server ticks, in seconds.
		221
		222	=item $cf::LOADAVG
		223
		224	The current CPU load on the server (alpha-smoothed), as a value between 0
		225	(none) and 1 (overloaded), indicating how much time is spent on processing
		226	objects per tick. Healthy values are < 0.5.
		227
		228	=item $cf::LOAD
		229
		230	The raw value load value from the last tick.
		231
		232	=item %cf::CFG
		233
		234	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		235	from wherever your confdir points to.
		236
		237	=item cf::wait_for_tick, cf::wait_for_tick_begin
		238
		239	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		240	returns directly I<after> the tick processing (and consequently, can only wake one thread
		241	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		242
		243	=cut
		244
		245	sub wait_for_tick();
		246	sub wait_for_tick_begin();
		247
		248	=item @cf::INVOKE_RESULTS
		249
		250	This array contains the results of the last C<invoke ()> call. When
		251	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		252	that call.
		253
		254	=item %cf::REFLECT
		255
		256	Contains, for each (C++) class name, a hash reference with information
		257	about object members (methods, scalars, arrays and flags) and other
		258	metadata, which is useful for introspection.
		259
		260	=back
		261
		262	=cut
		263
		264	sub error(@) { LOG llevError, join "", @_ }
		265	sub warn (@) { LOG llevWarn , join "", @_ }
		266	sub info (@) { LOG llevInfo , join "", @_ }
		267	sub debug(@) { LOG llevDebug, join "", @_ }
		268	sub trace(@) { LOG llevTrace, join "", @_ }
		269
		270	$Coro::State::WARNHOOK = sub {
30	my $msg = join "", @_;	271	my $msg = join "", @_;
		272
31	$msg .= "\n"	273	$msg .= "\n"
32	unless $msg =~ /\n$/;	274	unless $msg =~ /\n$/;
33		275
34	print STDERR "cfperl: $msg";	276	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
35	LOG llevError, "cfperl: $msg";
36	};
37	}
38		277
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	278	LOG llevWarn, $msg;
		279	};
40		280
41	# generate property mutators	281	$Coro::State::DIEHOOK = sub {
42	sub prop_gen {	282	return unless $^S eq 0; # "eq", not "=="
43	my ($prefix, $class) = @_;
44		283
45	no strict 'refs';	284	error Carp::longmess $_[0];
46		285
47	for my $prop (keys %PROP_TYPE) {	286	if (in_main) {#d#
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	287	error "DIEHOOK called in main context, Coro bug?\n";#d#
49	my $sub = lc $1;	288	return;#d#
		289	}#d#
50		290
51	my $type = $PROP_TYPE{$prop};	291	# kill coroutine otherwise
52	my $idx = $PROP_IDX {$prop};	292	Coro::terminate
		293	};
53		294
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	295	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	296	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
56	};	297	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
57		298	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
58	*{"$class\::set_$sub"} = sub {	299	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
59	$_[0]->set_property ($type, $idx, $_[1]);	300	@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';	301	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		302
75	# we bless all objects into (empty) derived classes to force a method lookup	303	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	304	# 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)) {	305	for my $pkg (qw(
78	no strict 'refs';	306	cf::global cf::attachable
		307	cf::object cf::object::player
		308	cf::client cf::player
		309	cf::arch cf::living
		310	cf::map cf::mapspace
		311	cf::party cf::region
		312	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	313	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	314	}
81		315
82	$Event::DIED = sub {	316	$EV::DIED = sub {
83	warn "error in event callback: @_";	317	Carp::cluck "error in event callback: @_";
84	};	318	};
85		319
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	320	#############################################################################
93	# utility functions
94		321
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	322	sub fork_call(&@);
96		323	sub get_slot($;$$);
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		324
107	#############################################################################	325	#############################################################################
108	# "new" plug-in system
109		326
110	=head3 EVENTS AND OBJECT ATTACHMENTS	327	=head2 UTILITY FUNCTIONS
111		328
112	=over 4	329	=over 4
113		330
114	=item $object->attach ($attachment, key => $value...)	331	=item dumpval $ref
115		332
116	=item $object->detach ($attachment)	333	=cut
117		334
118	Attach/detach a pre-registered attachment to an object.	335	sub dumpval {
		336	eval {
		337	local $SIG{__DIE__};
		338	my $d;
		339	if (1) {
		340	$d = new Data::Dumper([$_[0]], ["*var"]);
		341	$d->Terse(1);
		342	$d->Indent(2);
		343	$d->Quotekeys(0);
		344	$d->Useqq(1);
		345	#$d->Bless(...);
		346	$d->Seen($_[1]) if @_ > 1;
		347	$d = $d->Dump();
		348	}
		349	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		350	$d
		351	} || "[unable to dump $_[0]: '$@']";
		352	}
119		353
120	=item $player->attach ($attachment, key => $value...)	354	=item $scalar = load_file $path
121		355
122	=item $player->detach ($attachment)	356	Loads the given file from path and returns its contents. Croaks on error
		357	and can block.
123		358
124	Attach/detach a pre-registered attachment to a player.	359	=cut
125		360
		361	sub load_file($) {
		362	0 <= aio_load $_[0], my $data
		363	or Carp::croak "$_[0]: $!";
		364
		365	$data
		366	}
		367
		368	=item $ref = cf::decode_json $json
		369
		370	Converts a JSON string into the corresponding perl data structure.
		371
		372	=item $json = cf::encode_json $ref
		373
		374	Converts a perl data structure into its JSON representation.
		375
		376	=cut
		377
		378	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		379
		380	sub encode_json($) { $json_coder->encode ($_[0]) }
		381	sub decode_json($) { $json_coder->decode ($_[0]) }
		382
		383	=item $ref = cf::decode_storable $scalar
		384
		385	Same as Coro::Storable::thaw, so blocks.
		386
		387	=cut
		388
		389	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		390
		391	=item $ref = cf::decode_yaml $scalar
		392
		393	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		394
		395	=cut
		396
		397	sub decode_yaml($) {
		398	fork_call { YAML::XS::Load $_[0] } @_
		399	}
		400
		401	=item $scalar = cf::unlzf $scalar
		402
		403	Same as Compress::LZF::compress, but takes server ticks into account, so
		404	blocks.
		405
		406	=cut
		407
		408	sub unlzf($) {
		409	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		410	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		411	Compress::LZF::decompress $_[0]
		412	}
		413
		414	=item cf::post_init { BLOCK }
		415
		416	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		417	but I<before> the server starts ticking again.
		418
		419	The codeblock will have a single boolean argument to indicate whether this
		420	is a reload or not.
		421
		422	=cut
		423
		424	sub post_init(&) {
		425	push @POST_INIT, shift;
		426	}
		427
		428	sub _post_init {
		429	trace "running post_init jobs";
		430
		431	# run them in parallel...
		432
		433	my @join;
		434
		435	while () {
		436	push @join, map &Coro::async ($_, 0), @POST_INIT;
		437	@POST_INIT = ();
		438
		439	@join or last;
		440
		441	(pop @join)->join;
		442	}
		443	}
		444
		445	=item cf::lock_wait $string
		446
		447	Wait until the given lock is available. See cf::lock_acquire.
		448
		449	=item my $lock = cf::lock_acquire $string
		450
		451	Wait until the given lock is available and then acquires it and returns
		452	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		453	for example when the coroutine gets canceled), the lock is automatically
		454	returned.
		455
		456	Locks are *not* recursive, locking from the same coro twice results in a
		457	deadlocked coro.
		458
		459	Lock names should begin with a unique identifier (for example, cf::map::find
		460	uses map_find and cf::map::load uses map_load).
		461
		462	=item $locked = cf::lock_active $string
		463
		464	Return true if the lock is currently active, i.e. somebody has locked it.
		465
		466	=cut
		467
		468	our $LOCKS = new Coro::SemaphoreSet;
		469
		470	sub lock_wait($) {
		471	$LOCKS->wait ($_[0]);
		472	}
		473
		474	sub lock_acquire($) {
		475	$LOCKS->guard ($_[0])
		476	}
		477
		478	sub lock_active($) {
		479	$LOCKS->count ($_[0]) < 1
		480	}
		481
		482	sub freeze_mainloop {
		483	tick_inhibit_inc;
		484
		485	&Guard::guard (\&tick_inhibit_dec);
		486	}
		487
		488	=item cf::periodic $interval, $cb
		489
		490	Like EV::periodic, but randomly selects a starting point so that the actions
		491	get spread over time.
		492
		493	=cut
		494
		495	sub periodic($$) {
		496	my ($interval, $cb) = @_;
		497
		498	my $start = rand List::Util::min 180, $interval;
		499
		500	EV::periodic $start, $interval, 0, $cb
		501	}
		502
		503	=item cf::get_slot $time[, $priority[, $name]]
		504
		505	Allocate $time seconds of blocking CPU time at priority C<$priority>
		506	(default: 0): This call blocks and returns only when you have at least
		507	C<$time> seconds of cpu time till the next tick. The slot is only valid
		508	till the next cede.
		509
		510	Background jobs should use a priority les than zero, interactive jobs
		511	should use 100 or more.
		512
		513	The optional C<$name> can be used to identify the job to run. It might be
		514	used for statistical purposes and should identify the same time-class.
		515
		516	Useful for short background jobs.
		517
		518	=cut
		519
		520	our @SLOT_QUEUE;
		521	our $SLOT_QUEUE;
		522	our $SLOT_DECAY = 0.9;
		523
		524	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		525	$SLOT_QUEUE = Coro::async {
		526	$Coro::current->desc ("timeslot manager");
		527
		528	my $signal = new Coro::Signal;
		529	my $busy;
		530
		531	while () {
		532	next_job:
		533
		534	my $avail = cf::till_tick;
		535
		536	for (0 .. $#SLOT_QUEUE) {
		537	if ($SLOT_QUEUE[$_][0] <= $avail) {
		538	$busy = 0;
		539	my $job = splice @SLOT_QUEUE, $_, 1, ();
		540	$job->[2]->send;
		541	Coro::cede;
		542	goto next_job;
		543	} else {
		544	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		545	}
		546	}
		547
		548	if (@SLOT_QUEUE) {
		549	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		550	push @cf::WAIT_FOR_TICK, $signal;
		551	$signal->wait;
		552	} else {
		553	$busy = 0;
		554	Coro::schedule;
		555	}
		556	}
		557	};
		558
		559	sub get_slot($;$$) {
		560	return if tick_inhibit || $Coro::current == $Coro::main;
		561
		562	my ($time, $pri, $name) = @_;
		563
		564	$time = clamp $time, 0.01, $TICK * .6;
		565
		566	my $sig = new Coro::Signal;
		567
		568	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		569	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		570	$SLOT_QUEUE->ready;
		571	$sig->wait;
		572	}
		573
		574	=item cf::async { BLOCK }
		575
		576	Currently the same as Coro::async_pool, meaning you cannot use
		577	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		578	thing you are allowed to do is call C<prio> on it.
		579
		580	=cut
		581
		582	BEGIN { *async = \&Coro::async_pool }
		583
		584	=item cf::sync_job { BLOCK }
		585
		586	The design of Deliantra requires that the main coroutine ($Coro::main)
		587	is always able to handle events or runnable, as Deliantra is only
		588	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		589	acceptable.
		590
		591	If it must be done, put the blocking parts into C<sync_job>. This will run
		592	the given BLOCK in another coroutine while waiting for the result. The
		593	server will be frozen during this time, so the block should either finish
		594	fast or be very important.
		595
		596	=cut
		597
		598	sub sync_job(&) {
		599	my ($job) = @_;
		600
		601	if (in_main) {
		602	my $time = AE::time;
		603
		604	# this is the main coro, too bad, we have to block
		605	# till the operation succeeds, freezing the server :/
		606
		607	#LOG llevError, Carp::longmess "sync job";#d#
		608
		609	my $freeze_guard = freeze_mainloop;
		610
		611	my $busy = 1;
		612	my @res;
		613
		614	(async {
		615	$Coro::current->desc ("sync job coro");
		616	@res = eval { $job->() };
		617	error $@ if $@;
		618	undef $busy;
		619	})->prio (Coro::PRIO_MAX);
		620
		621	while ($busy) {
		622	if (Coro::nready) {
		623	Coro::cede_notself;
		624	} else {
		625	EV::loop EV::LOOP_ONESHOT;
		626	}
		627	}
		628
		629	my $time = AE::time - $time;
		630
		631	$TICK_START += $time; # do not account sync jobs to server load
		632
		633	wantarray ? @res : $res[0]
		634	} else {
		635	# we are in another coroutine, how wonderful, everything just works
		636
		637	$job->()
		638	}
		639	}
		640
		641	=item $coro = cf::async_ext { BLOCK }
		642
		643	Like async, but this coro is automatically being canceled when the
		644	extension calling this is being unloaded.
		645
		646	=cut
		647
		648	sub async_ext(&) {
		649	my $cb = shift;
		650
		651	my $coro = &Coro::async ($cb);
		652
		653	$coro->on_destroy (sub {
		654	delete $EXT_CORO{$coro+0};
		655	});
		656	$EXT_CORO{$coro+0} = $coro;
		657
		658	$coro
		659	}
		660
		661	=item fork_call { }, @args
		662
		663	Executes the given code block with the given arguments in a seperate
		664	process, returning the results. Everything must be serialisable with
		665	Coro::Storable. May, of course, block. Note that the executed sub may
		666	never block itself or use any form of event handling.
		667
		668	=cut
		669
		670	sub post_fork {
		671	reset_signals;
		672	}
		673
		674	sub fork_call(&@) {
		675	my ($cb, @args) = @_;
		676
		677	# we seemingly have to make a local copy of the whole thing,
		678	# otherwise perl prematurely frees the stuff :/
		679	# TODO: investigate and fix (likely this will be rather laborious)
		680
		681	my @res = Coro::Util::fork_eval {
		682	cf::post_fork;
		683	&$cb
		684	} @args;
		685
		686	wantarray ? @res : $res[-1]
		687	}
		688
		689	sub objinfo {
		690	(
		691	"counter value" => cf::object::object_count,
		692	"objects created" => cf::object::create_count,
		693	"objects destroyed" => cf::object::destroy_count,
		694	"freelist size" => cf::object::free_count,
		695	"allocated objects" => cf::object::objects_size,
		696	"active objects" => cf::object::actives_size,
		697	)
		698	}
		699
		700	=item $coin = coin_from_name $name
		701
		702	=cut
		703
		704	our %coin_alias = (
		705	"silver" => "silvercoin",
		706	"silvercoin" => "silvercoin",
		707	"silvercoins" => "silvercoin",
		708	"gold" => "goldcoin",
		709	"goldcoin" => "goldcoin",
		710	"goldcoins" => "goldcoin",
		711	"platinum" => "platinacoin",
		712	"platinumcoin" => "platinacoin",
		713	"platinumcoins" => "platinacoin",
		714	"platina" => "platinacoin",
		715	"platinacoin" => "platinacoin",
		716	"platinacoins" => "platinacoin",
		717	"royalty" => "royalty",
		718	"royalties" => "royalty",
		719	);
		720
		721	sub coin_from_name($) {
		722	$coin_alias{$_[0]}
		723	? cf::arch::find $coin_alias{$_[0]}
		724	: undef
		725	}
		726
		727	=item $value = cf::db_get $family => $key
		728
		729	Returns a single value from the environment database.
		730
		731	=item cf::db_put $family => $key => $value
		732
		733	Stores the given C<$value> in the family. It can currently store binary
		734	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		735
		736	=item $db = cf::db_table "name"
		737
		738	Create and/or open a new database table. The string must not be "db" and must be unique
		739	within each server.
		740
		741	=cut
		742
		743	sub db_table($) {
		744	cf::error "db_get called from main context"
		745	if $Coro::current == $Coro::main;
		746
		747	my ($name) = @_;
		748	my $db = BDB::db_create $DB_ENV;
		749
		750	eval {
		751	$db->set_flags (BDB::CHKSUM);
		752
		753	utf8::encode $name;
		754	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		755	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		756	cf::cleanup "db_open(db): $!" if $!;
		757	};
		758	cf::cleanup "db_open(db): $@" if $@;
		759
		760	$db
		761	}
		762
		763	our $DB;
		764
		765	sub db_init {
		766	$DB ||= db_table "db";
		767	}
		768
		769	sub db_get($$) {
		770	my $key = "$_[0]/$_[1]";
		771
		772	cf::error "db_get called from main context"
		773	if $Coro::current == $Coro::main;
		774
		775	BDB::db_get $DB, undef, $key, my $data;
		776
		777	$! ? ()
		778	: $data
		779	}
		780
		781	sub db_put($$$) {
		782	BDB::dbreq_pri 4;
		783	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		784	}
		785
		786	=item cf::cache $id => [$paths...], $processversion => $process
		787
		788	Generic caching function that returns the value of the resource $id,
		789	caching and regenerating as required.
		790
		791	This function can block.
		792
		793	=cut
		794
		795	sub cache {
		796	my ($id, $src, $processversion, $process) = @_;
		797
		798	my $meta =
		799	join "\x00",
		800	$processversion,
		801	map {
		802	aio_stat $_
		803	and Carp::croak "$_: $!";
		804
		805	($_, (stat _)[7,9])
		806	} @$src;
		807
		808	my $dbmeta = db_get cache => "$id/meta";
		809	if ($dbmeta ne $meta) {
		810	# changed, we may need to process
		811
		812	my @data;
		813	my $md5;
		814
		815	for (0 .. $#$src) {
		816	$data[$_] = load_file $src->[$_];
		817	}
		818
		819	# if processing is expensive, check
		820	# checksum first
		821	if (1) {
		822	$md5 =
		823	join "\x00",
		824	$processversion,
		825	map {
		826	cf::cede_to_tick;
		827	($src->[$_], Digest::MD5::md5_hex $data[$_])
		828	} 0.. $#$src;
		829
		830
		831	my $dbmd5 = db_get cache => "$id/md5";
		832	if ($dbmd5 eq $md5) {
		833	db_put cache => "$id/meta", $meta;
		834
		835	return db_get cache => "$id/data";
		836	}
		837	}
		838
		839	my $t1 = Time::HiRes::time;
		840	my $data = $process->(\@data);
		841	my $t2 = Time::HiRes::time;
		842
		843	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		844
		845	db_put cache => "$id/data", $data;
		846	db_put cache => "$id/md5" , $md5;
		847	db_put cache => "$id/meta", $meta;
		848
		849	return $data;
		850	}
		851
		852	db_get cache => "$id/data"
		853	}
		854
		855	=item cf::datalog type => key => value, ...
		856
		857	Log a datalog packet of the given type with the given key-value pairs.
		858
		859	=cut
		860
		861	sub datalog($@) {
		862	my ($type, %kv) = @_;
		863	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		864	}
		865
		866	=back
		867
		868	=cut
		869
		870	#############################################################################
		871
		872	=head2 ATTACHABLE OBJECTS
		873
		874	Many objects in deliantra are so-called attachable objects. That means you can
		875	attach callbacks/event handlers (a collection of which is called an "attachment")
		876	to it. All such attachable objects support the following methods.
		877
		878	In the following description, CLASS can be any of C<global>, C<object>
		879	C<player>, C<client> or C<map> (i.e. the attachable objects in
		880	Deliantra).
		881
		882	=over 4
		883
126	=item $map->attach ($attachment, key => $value...)	884	=item $attachable->attach ($attachment, key => $value...)
127		885
128	=item $map->detach ($attachment)	886	=item $attachable->detach ($attachment)
129		887
130	Attach/detach a pre-registered attachment to a map.	888	Attach/detach a pre-registered attachment to a specific object and give it
		889	the specified key/value pairs as arguments.
131		890
132	=item $bool = $object->attached ($name)	891	Example, attach a minesweeper attachment to the given object, making it a
		892	10x10 minesweeper game:
133		893
134	=item $bool = $player->attached ($name)	894	$obj->attach (minesweeper => width => 10, height => 10);
135		895
136	=item $bool = $map->attached ($name)	896	=item $bool = $attachable->attached ($name)
137		897
138	Checks wether the named attachment is currently attached to the object.	898	Checks wether the named attachment is currently attached to the object.
139		899
140	=item cf::attach_global ...	900	=item cf::CLASS->attach ...
141		901
142	Attach handlers for global events.	902	=item cf::CLASS->detach ...
143		903
144	This and all following C<attach_*>-functions expect any number of the	904	Define an anonymous attachment and attach it to all objects of the given
145	following handler/hook descriptions:	905	CLASS. See the next function for an explanation of its arguments.
		906
		907	You can attach to global events by using the C<cf::global> class.
		908
		909	Example, log all player logins:
		910
		911	cf::player->attach (
		912	on_login => sub {
		913	my ($pl) = @_;
		914	...
		915	},
		916	);
		917
		918	Example, attach to the jeweler skill:
		919
		920	cf::object->attach (
		921	type => cf::SKILL,
		922	subtype => cf::SK_JEWELER,
		923	on_use_skill => sub {
		924	my ($sk, $ob, $part, $dir, $msg) = @_;
		925	...
		926	},
		927	);
		928
		929	=item cf::CLASS::attachment $name, ...
		930
		931	Register an attachment by C<$name> through which attachable objects of the
		932	given CLASS can refer to this attachment.
		933
		934	Some classes such as deliantra maps and objects can specify attachments
		935	that are attached at load/instantiate time, thus the need for a name.
		936
		937	These calls expect any number of the following handler/hook descriptions:
146		938
147	=over 4	939	=over 4
148		940
149	=item prio => $number	941	=item prio => $number
150		942
…		…
152	by another C<prio> setting). Lower priority handlers get executed	944	by another C<prio> setting). Lower priority handlers get executed
153	earlier. The default priority is C<0>, and many built-in handlers are	945	earlier. The default priority is C<0>, and many built-in handlers are
154	registered at priority C<-1000>, so lower priorities should not be used	946	registered at priority C<-1000>, so lower priorities should not be used
155	unless you know what you are doing.	947	unless you know what you are doing.
156		948
		949	=item type => $type
		950
		951	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		952	given type of objects only (the additional parameter C<subtype> can be
		953	used to further limit to the given subtype).
		954
157	=item on_I<event> => \&cb	955	=item on_I<event> => \&cb
158		956
159	Call the given code reference whenever the named event happens (event is	957	Call the given code reference whenever the named event happens (event is
160	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	958	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
161	handlers are recognised generally depends on the type of object these	959	handlers are recognised generally depends on the type of object these
…		…
170	package and register them. Only handlers for eevents supported by the	968	package and register them. Only handlers for eevents supported by the
171	object/class are recognised.	969	object/class are recognised.
172		970
173	=back	971	=back
174		972
175	=item cf::attach_to_type $object_type, $subtype, ...	973	Example, define an attachment called "sockpuppet" that calls the given
		974	event handler when a monster attacks:
176		975
177	Attach handlers for a specific object type (e.g. TRANSPORT) and	976	cf::object::attachment sockpuppet =>
178	subtype. If C<$subtype> is zero or undef, matches all objects of the given	977	on_skill_attack => sub {
179	type.	978	my ($self, $victim) = @_;
180		979	...
181	=item cf::attach_to_objects ...
182
183	Attach handlers to all objects. Do not use this except for debugging or
184	very rare events, as handlers are (obviously) called for I<all> objects in
185	the game.
186
187	=item cf::attach_to_players ...
188
189	Attach handlers to all players.
190
191	=item cf::attach_to_maps ...
192
193	Attach handlers to all maps.
194
195	=item cf:register_attachment $name, ...
196
197	Register an attachment by name through which objects can refer to this
198	attachment.
199
200	=item cf:register_player_attachment $name, ...
201
202	Register an attachment by name through which players can refer to this
203	attachment.
204
205	=item cf:register_map_attachment $name, ...
206
207	Register an attachment by name through which maps can refer to this
208	attachment.
209
210	=cut
211
212	# the following variables are defined in .xs and must not be re-created
213	our @CB_GLOBAL = (); # registry for all global events
214	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
215	our @CB_PLAYER = ();
216	our @CB_TYPE = (); # registry for type (cf-object class) based events
217	our @CB_MAP = ();
218
219	my %attachment;
220
221	sub _attach_cb($\%$$$) {
222	my ($registry, $undo, $event, $prio, $cb) = @_;
223
224	use sort 'stable';
225
226	$cb = [$prio, $cb];
227
228	@{$registry->[$event]} = sort
229	{ $a->[0] cmp $b->[0] }
230	@{$registry->[$event] || []}, $cb;
231
232	push @{$undo->{cb}}, [$event, $cb];
233	}
234
235	# attach handles attaching event callbacks
236	# the only thing the caller has to do is pass the correct
237	# registry (== where the callback attaches to).
238	sub _attach(\@$@) {
239	my ($registry, $klass, @arg) = @_;
240
241	my $prio = 0;
242
243	my %undo = (
244	registry => $registry,
245	cb => [],
246	);
247
248	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
249
250	while (@arg) {
251	my $type = shift @arg;
252
253	if ($type eq "prio") {
254	$prio = shift @arg;
255
256	} elsif ($type eq "package") {
257	my $pkg = shift @arg;
258
259	while (my ($name, $id) = each %cb_id) {
260	if (my $cb = $pkg->can ($name)) {
261	_attach_cb $registry, %undo, $id, $prio, $cb;
262	}
263	}	980	}
264
265	} elsif (exists $cb_id{$type}) {
266	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
267
268	} elsif (ref $type) {
269	warn "attaching objects not supported, ignoring.\n";
270
271	} else {
272	shift @arg;
273	warn "attach argument '$type' not supported, ignoring.\n";
274	}
275	}
276
277	\%undo
278	}
279
280	sub _attach_attachment {
281	my ($obj, $name, %arg) = @_;
282
283	return if exists $obj->{_attachment}{$name};
284
285	my $res;
286
287	if (my $attach = $attachment{$name}) {
288	my $registry = $obj->registry;
289
290	for (@$attach) {
291	my ($klass, @attach) = @$_;
292	$res = _attach @$registry, $klass, @attach;
293	}
294
295	$obj->{$name} = \%arg;
296	} else {
297	warn "object uses attachment '$name' that is not available, postponing.\n";
298	}
299
300	$obj->{_attachment}{$name} = undef;
301
302	$res->{attachment} = $name;
303	$res
304	}
305
306	*cf::object::attach =
307	*cf::player::attach =
308	*cf::map::attach = sub {
309	my ($obj, $name, %arg) = @_;
310
311	_attach_attachment $obj, $name, %arg;
312	};
313
314	# all those should be optimised
315	*cf::object::detach =
316	*cf::player::detach =
317	*cf::map::detach = sub {
318	my ($obj, $name) = @_;
319
320	delete $obj->{_attachment}{$name};
321	reattach ($obj);
322	};
323
324	*cf::object::attached =
325	*cf::player::attached =
326	*cf::map::attached = sub {
327	my ($obj, $name) = @_;
328
329	exists $obj->{_attachment}{$name}
330	};
331
332	sub attach_global {
333	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
334	}
335
336	sub attach_to_type {
337	my $type = shift;
338	my $subtype = shift;
339
340	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
341	}
342
343	sub attach_to_objects {
344	_attach @CB_OBJECT, KLASS_OBJECT, @_
345	}
346
347	sub attach_to_players {
348	_attach @CB_PLAYER, KLASS_PLAYER, @_
349	}
350
351	sub attach_to_maps {
352	_attach @CB_MAP, KLASS_MAP, @_
353	}
354
355	sub register_attachment {
356	my $name = shift;
357
358	$attachment{$name} = [[KLASS_OBJECT, @_]];
359	}
360
361	sub register_player_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_PLAYER, @_]];
365	}
366
367	sub register_map_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_MAP, @_]];
371	}
372
373	our $override;
374	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
375
376	sub override {
377	$override = 1;
378	@invoke_results = ();
379	}
380
381	sub do_invoke {
382	my $event = shift;
383	my $callbacks = shift;
384
385	@invoke_results = ();
386
387	local $override;
388
389	for (@$callbacks) {
390	eval { &{$_->[1]} };
391
392	if ($@) {
393	warn "$@";
394	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
395	override;
396	}
397
398	return 1 if $override;
399	}
400
401	0	981	}
402	}
403		982
404	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	983	=item $attachable->valid
405
406	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
407
408	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
409
410	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
411
412	Generate a global/object/player/map-specific event with the given arguments.
413
414	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
415	removed in future versions), and there is no public API to access override
416	results (if you must, access C<@cf::invoke_results> directly).
417
418	=back
419
420	=head2 methods valid for all pointers
421
422	=over 4
423
424	=item $object->valid
425
426	=item $player->valid
427
428	=item $map->valid
429		984
430	Just because you have a perl object does not mean that the corresponding	985	Just because you have a perl object does not mean that the corresponding
431	C-level object still exists. If you try to access an object that has no	986	C-level object still exists. If you try to access an object that has no
432	valid C counterpart anymore you get an exception at runtime. This method	987	valid C counterpart anymore you get an exception at runtime. This method
433	can be used to test for existence of the C object part without causing an	988	can be used to test for existence of the C object part without causing an
434	exception.	989	exception.
435		990
		991	=cut
		992
		993	# the following variables are defined in .xs and must not be re-created
		994	our @CB_GLOBAL = (); # registry for all global events
		995	our @CB_ATTACHABLE = (); # registry for all attachables
		996	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		997	our @CB_PLAYER = ();
		998	our @CB_CLIENT = ();
		999	our @CB_TYPE = (); # registry for type (cf-object class) based events
		1000	our @CB_MAP = ();
		1001
		1002	my %attachment;
		1003
		1004	sub cf::attachable::thawer_merge {
		1005	# simply override everything except _meta
		1006	local $_[0]{_meta};
		1007	%{$_[0]} = %{$_[1]};
		1008	}
		1009
		1010	sub _attach_cb($$$$) {
		1011	my ($registry, $event, $prio, $cb) = @_;
		1012
		1013	use sort 'stable';
		1014
		1015	$cb = [$prio, $cb];
		1016
		1017	@{$registry->[$event]} = sort
		1018	{ $a->[0] cmp $b->[0] }
		1019	@{$registry->[$event] || []}, $cb;
		1020	}
		1021
		1022	# hack
		1023	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		1024
		1025	# attach handles attaching event callbacks
		1026	# the only thing the caller has to do is pass the correct
		1027	# registry (== where the callback attaches to).
		1028	sub _attach {
		1029	my ($registry, $klass, @arg) = @_;
		1030
		1031	my $object_type;
		1032	my $prio = 0;
		1033	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1034
		1035	#TODO: get rid of this hack
		1036	if ($attachable_klass{$klass}) {
		1037	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1038	}
		1039
		1040	while (@arg) {
		1041	my $type = shift @arg;
		1042
		1043	if ($type eq "prio") {
		1044	$prio = shift @arg;
		1045
		1046	} elsif ($type eq "type") {
		1047	$object_type = shift @arg;
		1048	$registry = $CB_TYPE[$object_type] ||= [];
		1049
		1050	} elsif ($type eq "subtype") {
		1051	defined $object_type or Carp::croak "subtype specified without type";
		1052	my $object_subtype = shift @arg;
		1053	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1054
		1055	} elsif ($type eq "package") {
		1056	my $pkg = shift @arg;
		1057
		1058	while (my ($name, $id) = each %cb_id) {
		1059	if (my $cb = $pkg->can ($name)) {
		1060	_attach_cb $registry, $id, $prio, $cb;
		1061	}
		1062	}
		1063
		1064	} elsif (exists $cb_id{$type}) {
		1065	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		1066
		1067	} elsif (ref $type) {
		1068	error "attaching objects not supported, ignoring.\n";
		1069
		1070	} else {
		1071	shift @arg;
		1072	error "attach argument '$type' not supported, ignoring.\n";
		1073	}
		1074	}
		1075	}
		1076
		1077	sub _object_attach {
		1078	my ($obj, $name, %arg) = @_;
		1079
		1080	return if exists $obj->{_attachment}{$name};
		1081
		1082	if (my $attach = $attachment{$name}) {
		1083	my $registry = $obj->registry;
		1084
		1085	for (@$attach) {
		1086	my ($klass, @attach) = @$_;
		1087	_attach $registry, $klass, @attach;
		1088	}
		1089
		1090	$obj->{$name} = \%arg;
		1091	} else {
		1092	info "object uses attachment '$name' which is not available, postponing.\n";
		1093	}
		1094
		1095	$obj->{_attachment}{$name} = undef;
		1096	}
		1097
		1098	sub cf::attachable::attach {
		1099	if (ref $_[0]) {
		1100	_object_attach @_;
		1101	} else {
		1102	_attach shift->_attach_registry, @_;
		1103	}
		1104	_recalc_want;
		1105	};
		1106
		1107	# all those should be optimised
		1108	sub cf::attachable::detach {
		1109	my ($obj, $name) = @_;
		1110
		1111	if (ref $obj) {
		1112	delete $obj->{_attachment}{$name};
		1113	reattach ($obj);
		1114	} else {
		1115	Carp::croak "cannot, currently, detach class attachments";
		1116	}
		1117	_recalc_want;
		1118	};
		1119
		1120	sub cf::attachable::attached {
		1121	my ($obj, $name) = @_;
		1122
		1123	exists $obj->{_attachment}{$name}
		1124	}
		1125
		1126	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		1127	eval "#line " . __LINE__ . " 'cf.pm'
		1128	sub cf::\L$klass\E::_attach_registry {
		1129	(\\\@CB_$klass, KLASS_$klass)
		1130	}
		1131
		1132	sub cf::\L$klass\E::attachment {
		1133	my \$name = shift;
		1134
		1135	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1136	}
		1137	";
		1138	die if $@;
		1139	}
		1140
		1141	our $override;
		1142	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		1143
		1144	sub override {
		1145	$override = 1;
		1146	@INVOKE_RESULTS = (@_);
		1147	}
		1148
		1149	sub do_invoke {
		1150	my $event = shift;
		1151	my $callbacks = shift;
		1152
		1153	@INVOKE_RESULTS = ();
		1154
		1155	local $override;
		1156
		1157	for (@$callbacks) {
		1158	eval { &{$_->[1]} };
		1159
		1160	if ($@) {
		1161	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		1162	override;
		1163	}
		1164
		1165	return 1 if $override;
		1166	}
		1167
		1168	0
		1169	}
		1170
		1171	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1172
		1173	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1174
		1175	Generate an object-specific event with the given arguments.
		1176
		1177	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1178	removed in future versions), and there is no public API to access override
		1179	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1180
436	=back	1181	=back
437		1182
438	=cut	1183	=cut
439
440	*cf::object::valid =
441	*cf::player::valid =
442	*cf::map::valid = \&cf::_valid;
443		1184
444	#############################################################################	1185	#############################################################################
445	# object support	1186	# object support
446		1187
447	sub instantiate {	1188	sub _object_equal($$);
		1189	sub _object_equal($$) {
		1190	my ($a, $b) = @_;
		1191
		1192	return 0 unless (ref $a) eq (ref $b);
		1193
		1194	if ("HASH" eq ref $a) {
		1195	my @ka = keys %$a;
		1196	my @kb = keys %$b;
		1197
		1198	return 0 if @ka != @kb;
		1199
		1200	for (0 .. $#ka) {
		1201	return 0 unless $ka[$_] eq $kb[$_];
		1202	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1203	}
		1204
		1205	} elsif ("ARRAY" eq ref $a) {
		1206
		1207	return 0 if @$a != @$b;
		1208
		1209	for (0 .. $#$a) {
		1210	return 0 unless _object_equal $a->[$_], $b->[$_];
		1211	}
		1212
		1213	} elsif ($a ne $b) {
		1214	return 0;
		1215	}
		1216
		1217	1
		1218	}
		1219
		1220	our $SLOW_MERGES;#d#
		1221	sub _can_merge {
448	my ($obj, $data) = @_;	1222	my ($ob1, $ob2) = @_;
449		1223
450	$data = from_json $data;	1224	++$SLOW_MERGES;#d#
451		1225
452	for (@$data) {	1226	# we do the slow way here
453	my ($name, $args) = @$_;	1227	return _object_equal $ob1, $ob2
454
455	$obj->attach ($name, %{$args || {} });
456	}
457	}	1228	}
458		1229
459	# basically do the same as instantiate, without calling instantiate
460	sub reattach {	1230	sub reattach {
		1231	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	1232	my ($obj) = @_;
		1233
		1234	# no longer needed after getting rid of delete_package?
		1235	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1236
462	my $registry = $obj->registry;	1237	my $registry = $obj->registry;
463		1238
464	@$registry = ();	1239	@$registry = ();
465		1240
466	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1241	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
467		1242
468	for my $name (keys %{ $obj->{_attachment} || {} }) {	1243	for my $name (keys %{ $obj->{_attachment} || {} }) {
469	if (my $attach = $attachment{$name}) {	1244	if (my $attach = $attachment{$name}) {
470	for (@$attach) {	1245	for (@$attach) {
471	my ($klass, @attach) = @$_;	1246	my ($klass, @attach) = @$_;
472	_attach @$registry, $klass, @attach;	1247	_attach $registry, $klass, @attach;
473	}	1248	}
474	} else {	1249	} else {
475	warn "object uses attachment '$name' that is not available, postponing.\n";	1250	info "object uses attachment '$name' that is not available, postponing.\n";
476	}	1251	}
477	}	1252	}
478	}	1253	}
479		1254
480	sub object_freezer_save {	1255	cf::attachable->attach (
481	my ($filename, $objs) = @_;
482
483	if (@$objs) {
484	open my $fh, ">:raw", "$filename.pst~";
485	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
486	close $fh;
487	chmod SAVE_MODE, "$filename.pst~";
488	rename "$filename.pst~", "$filename.pst";
489	} else {
490	unlink "$filename.pst";
491	}
492
493	chmod SAVE_MODE, "$filename~";
494	rename "$filename~", $filename;
495	}
496
497	sub object_thawer_load {
498	my ($filename) = @_;
499
500	open my $fh, "<:raw:perlio", "$filename.pst"
501	or return;
502
503	eval { local $/; (Storable::thaw <$fh>)->{objs} }
504	}
505
506	attach_to_objects
507	prio => -1000000,	1256	prio => -1000000,
		1257	on_instantiate => sub {
		1258	my ($obj, $data) = @_;
		1259
		1260	$data = decode_json $data;
		1261
		1262	for (@$data) {
		1263	my ($name, $args) = @$_;
		1264
		1265	$obj->attach ($name, %{$args || {} });
		1266	}
		1267	},
		1268	on_reattach => \&reattach,
508	on_clone => sub {	1269	on_clone => sub {
509	my ($src, $dst) = @_;	1270	my ($src, $dst) = @_;
510		1271
511	@{$dst->registry} = @{$src->registry};	1272	@{$dst->registry} = @{$src->registry};
512		1273
513	%$dst = %$src;	1274	%$dst = %$src;
514		1275
515	%{$dst->{_attachment}} = %{$src->{_attachment}}	1276	%{$dst->{_attachment}} = %{$src->{_attachment}}
516	if exists $src->{_attachment};	1277	if exists $src->{_attachment};
517	},	1278	},
518	;	1279	);
		1280
		1281	sub object_freezer_save {
		1282	my ($filename, $rdata, $objs) = @_;
		1283
		1284	sync_job {
		1285	if (length $$rdata) {
		1286	utf8::decode (my $decname = $filename);
		1287	trace sprintf "saving %s (%d,%d)\n",
		1288	$decname, length $$rdata, scalar @$objs
		1289	if $VERBOSE_IO;
		1290
		1291	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1292	aio_chmod $fh, SAVE_MODE;
		1293	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1294	if ($cf::USE_FSYNC) {
		1295	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1296	aio_fsync $fh;
		1297	}
		1298	aio_close $fh;
		1299
		1300	if (@$objs) {
		1301	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1302	aio_chmod $fh, SAVE_MODE;
		1303	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1304	aio_write $fh, 0, (length $data), $data, 0;
		1305	if ($cf::USE_FSYNC) {
		1306	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1307	aio_fsync $fh;
		1308	}
		1309	aio_close $fh;
		1310	aio_rename "$filename.pst~", "$filename.pst";
		1311	}
		1312	} else {
		1313	aio_unlink "$filename.pst";
		1314	}
		1315
		1316	aio_rename "$filename~", $filename;
		1317
		1318	$filename =~ s%/[^/]+$%%;
		1319	aio_pathsync $filename if $cf::USE_FSYNC;
		1320	} else {
		1321	error "unable to save objects: $filename~: $!\n";
		1322	}
		1323	} else {
		1324	aio_unlink $filename;
		1325	aio_unlink "$filename.pst";
		1326	}
		1327	};
		1328	}
		1329
		1330	sub object_freezer_as_string {
		1331	my ($rdata, $objs) = @_;
		1332
		1333	use Data::Dumper;
		1334
		1335	$$rdata . Dumper $objs
		1336	}
		1337
		1338	sub object_thawer_load {
		1339	my ($filename) = @_;
		1340
		1341	my ($data, $av);
		1342
		1343	(aio_load $filename, $data) >= 0
		1344	or return;
		1345
		1346	unless (aio_stat "$filename.pst") {
		1347	(aio_load "$filename.pst", $av) >= 0
		1348	or return;
		1349
		1350	my $st = eval { Coro::Storable::thaw $av };
		1351	$av = $st->{objs};
		1352	}
		1353
		1354	utf8::decode (my $decname = $filename);
		1355	trace sprintf "loading %s (%d,%d)\n",
		1356	$decname, length $data, scalar @{$av || []}
		1357	if $VERBOSE_IO;
		1358
		1359	($data, $av)
		1360	}
		1361
		1362	=head2 COMMAND CALLBACKS
		1363
		1364	=over 4
		1365
		1366	=cut
519		1367
520	#############################################################################	1368	#############################################################################
521	# old plug-in events	1369	# command handling &c
522		1370
523	sub inject_event {	1371	=item cf::register_command $name => \&callback($ob,$args);
524	my $extension = shift;
525	my $event_code = shift;
526		1372
527	my $cb = $hook[$event_code]{$extension}	1373	Register a callback for execution when the client sends the user command
528	or return;	1374	$name.
529		1375
530	&$cb	1376	=cut
531	}
532
533	sub inject_global_event {
534	my $event = shift;
535
536	my $cb = $hook[$event]
537	or return;
538
539	List::Util::max map &$_, values %$cb
540	}
541
542	sub inject_command {
543	my ($name, $obj, $params) = @_;
544
545	for my $cmd (@{ $command{$name} }) {
546	$cmd->[1]->($obj, $params);
547	}
548
549	-1
550	}
551		1377
552	sub register_command {	1378	sub register_command {
553	my ($name, $time, $cb) = @_;	1379	my ($name, $cb) = @_;
554		1380
555	my $caller = caller;	1381	my $caller = caller;
556	#warn "registering command '$name/$time' to '$caller'";	1382	#warn "registering command '$name/$time' to '$caller'";
557		1383
558	push @{ $command{$name} }, [$time, $cb, $caller];	1384	push @{ $COMMAND{$name} }, [$caller, $cb];
559	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
560	}	1385	}
		1386
		1387	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1388
		1389	Register a callback for execution when the client sends an (synchronous)
		1390	extcmd packet. Ext commands will be processed in the order they are
		1391	received by the server, like other user commands. The first argument is
		1392	the logged-in player. Ext commands can only be processed after a player
		1393	has logged in successfully.
		1394
		1395	If the callback returns something, it is sent back as if reply was being
		1396	called.
		1397
		1398	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1399
		1400	Register a callback for execution when the client sends an (asynchronous)
		1401	exticmd packet. Exti commands are processed by the server as soon as they
		1402	are received, i.e. out of order w.r.t. other commands. The first argument
		1403	is a client socket. Exti commands can be received anytime, even before
		1404	log-in.
		1405
		1406	If the callback returns something, it is sent back as if reply was being
		1407	called.
		1408
		1409	=cut
561		1410
562	sub register_extcmd {	1411	sub register_extcmd {
563	my ($name, $cb) = @_;	1412	my ($name, $cb) = @_;
564		1413
565	my $caller = caller;	1414	$EXTCMD{$name} = $cb;
566	#warn "registering extcmd '$name' to '$caller'";
567
568	$extcmd{$name} = [$cb, $caller];
569	}	1415	}
570		1416
571	sub register {	1417	sub register_exticmd {
572	my ($base, $pkg) = @_;	1418	my ($name, $cb) = @_;
573		1419
574	#TODO	1420	$EXTICMD{$name} = $cb;
575	}	1421	}
576		1422
577	sub load_extension {	1423	use File::Glob ();
578	my ($path) = @_;
579		1424
580	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1425	cf::player->attach (
581	my $base = $1;	1426	on_unknown_command => sub {
582	my $pkg = $1;	1427	my ($pl, $name, $params) = @_;
583	$pkg =~ s/[^[:word:]]/_/g;
584	$pkg = "ext::$pkg";
585		1428
586	warn "loading '$path' into '$pkg'\n";	1429	my $cb = $COMMAND{$name}
		1430	or return;
587		1431
588	open my $fh, "<:utf8", $path	1432	for my $cmd (@$cb) {
589	or die "$path: $!";	1433	$cmd->[1]->($pl->ob, $params);
590
591	my $source =
592	"package $pkg; use strict; use utf8;\n"
593	. "#line 1 \"$path\"\n{\n"
594	. (do { local $/; <$fh> })
595	. "\n};\n1";
596
597	eval $source
598	or die "$path: $@";
599
600	push @exts, $pkg;
601	$ext_pkg{$base} = $pkg;
602
603	# no strict 'refs';
604	# @{"$pkg\::ISA"} = ext::;
605
606	register $base, $pkg;
607	}
608
609	sub unload_extension {
610	my ($pkg) = @_;
611
612	warn "removing extension $pkg\n";
613
614	# remove hooks
615	#TODO
616	# for my $idx (0 .. $#PLUGIN_EVENT) {
617	# delete $hook[$idx]{$pkg};
618	# }
619
620	# remove commands
621	for my $name (keys %command) {
622	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
623
624	if (@cb) {
625	$command{$name} = \@cb;
626	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
627	} else {
628	delete $command{$name};
629	delete $COMMAND{"$name\000"};
630	}
631	}
632
633	# remove extcmds
634	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
635	delete $extcmd{$name};
636	}
637
638	if (my $cb = $pkg->can ("unload")) {
639	eval {
640	$cb->($pkg);
641	1
642	} or warn "$pkg unloaded, but with errors: $@";
643	}
644
645	Symbol::delete_package $pkg;
646	}
647
648	sub load_extensions {
649	my $LIBDIR = maps_directory "perl";
650
651	for my $ext (<$LIBDIR/*.ext>) {
652	next unless -r $ext;
653	eval {
654	load_extension $ext;
655	1
656	} or warn "$ext not loaded: $@";
657	}
658	}
659
660	sub _perl_reload(&) {
661	my ($msg) = @_;
662
663	$msg->("reloading...");
664
665	eval {
666	# 1. cancel all watchers
667	$_->cancel for Event::all_watchers;
668
669	# 2. unload all extensions
670	for (@exts) {
671	$msg->("unloading <$_>");
672	unload_extension $_;
673	}
674
675	# 3. unload all modules loaded from $LIBDIR
676	while (my ($k, $v) = each %INC) {
677	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
678
679	$msg->("removing <$k>");
680	delete $INC{$k};
681
682	$k =~ s/\.pm$//;
683	$k =~ s/\//::/g;
684
685	if (my $cb = $k->can ("unload_module")) {
686	$cb->();
687	}
688
689	Symbol::delete_package $k;
690	}
691
692	# 4. get rid of safe::, as good as possible
693	Symbol::delete_package "safe::$_"
694	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
695
696	# 5. remove register_script_function callbacks
697	# TODO
698
699	# 6. unload cf.pm "a bit"
700	delete $INC{"cf.pm"};
701
702	# don't, removes xs symbols, too,
703	# and global variables created in xs
704	#Symbol::delete_package __PACKAGE__;
705
706	# 7. reload cf.pm
707	$msg->("reloading cf.pm");
708	require cf;
709	};
710	$msg->($@) if $@;
711
712	$msg->("reloaded");
713	};
714
715	sub perl_reload() {
716	_perl_reload {
717	warn $_[0];
718	print "$_[0]\n";
719	};
720	}
721
722	register_command "perl-reload", 0, sub {
723	my ($who, $arg) = @_;
724
725	if ($who->flag (FLAG_WIZ)) {
726	_perl_reload {
727	warn $_[0];
728	$who->message ($_[0]);
729	};	1434	}
		1435
		1436	cf::override;
730	}	1437	},
731	};
732
733	#############################################################################
734	# extcmd framework, basically convert ext <msg>
735	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
736
737	attach_to_players
738	on_extcmd => sub {	1438	on_extcmd => sub {
739	my ($pl, $buf) = @_;	1439	my ($pl, $buf) = @_;
740		1440
741	my $msg = eval { from_json $buf };	1441	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
742		1442
743	if (ref $msg) {	1443	if (ref $msg) {
		1444	my ($type, $reply, @payload) =
		1445	"ARRAY" eq ref $msg
		1446	? @$msg
		1447	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1448
		1449	my @reply;
		1450
744	if (my $cb = $extcmd{$msg->{msgtype}}) {	1451	if (my $cb = $EXTCMD{$type}) {
745	if (my %reply = $cb->[0]->($pl, $msg)) {	1452	@reply = $cb->($pl, @payload);
746	$pl->ext_reply ($msg->{msgid}, %reply);	1453	}
		1454
		1455	$pl->ext_reply ($reply, @reply)
		1456	if $reply;
		1457
		1458	} else {
		1459	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1460	}
		1461
		1462	cf::override;
		1463	},
		1464	);
		1465
		1466	# "readahead" all extensions
		1467	sub cache_extensions {
		1468	my $grp = IO::AIO::aio_group;
		1469
		1470	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1471	for (grep /\.ext$/, @{$_[0]}) {
		1472	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1473	}
		1474	};
		1475
		1476	$grp
		1477	}
		1478
		1479	sub load_extensions {
		1480	info "loading extensions...";
		1481
		1482	cf::sync_job {
		1483	my %todo;
		1484
		1485	for my $path (<$LIBDIR/*.ext>) {
		1486	next unless -r $path;
		1487
		1488	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1489	my $base = $1;
		1490	my $pkg = $1;
		1491	$pkg =~ s/[^[:word:]]/_/g;
		1492	$pkg = "ext::$pkg";
		1493
		1494	open my $fh, "<:utf8", $path
		1495	or die "$path: $!";
		1496
		1497	my $source = do { local $/; <$fh> };
		1498
		1499	my %ext = (
		1500	path => $path,
		1501	base => $base,
		1502	pkg => $pkg,
		1503	);
		1504
		1505	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1506	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1507
		1508	$ext{source} =
		1509	"package $pkg; use common::sense;\n"
		1510	. "#line 1 \"$path\"\n{\n"
		1511	. $source
		1512	. "\n};\n1";
		1513
		1514	$todo{$base} = \%ext;
		1515	}
		1516
		1517	my $pass = 0;
		1518	my %done;
		1519	while (%todo) {
		1520	my $progress;
		1521
		1522	++$pass;
		1523
		1524	ext:
		1525	while (my ($k, $v) = each %todo) {
		1526	for (split /,\s*/, $v->{meta}{depends}) {
		1527	next ext
		1528	unless exists $done{$_};
		1529	}
		1530
		1531	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1532
		1533	my $active = eval $v->{source};
		1534
		1535	if (length $@) {
		1536	error "$v->{path}: $@\n";
		1537
		1538	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1539	if exists $v->{meta}{mandatory};
		1540
		1541	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1542	delete $todo{$k};
		1543	} else {
		1544	$done{$k} = delete $todo{$k};
		1545	push @EXTS, $v->{pkg};
		1546	$progress = 1;
		1547
		1548	info "$v->{base}: extension inactive.\n"
		1549	unless $active;
747	}	1550	}
748	}	1551	}
749	} else {	1552
750	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1553	unless ($progress) {
		1554	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1555
		1556	while (my ($k, $v) = each %todo) {
		1557	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1558	if exists $v->{meta}{mandatory};
		1559	}
		1560
		1561	last;
751	}	1562	}
752		1563	}
753	cf::override;
754	},	1564	};
755	;	1565	}
756		1566
757	#############################################################################	1567	#############################################################################
758	# load/save/clean perl data associated with a map
759		1568
760	*cf::mapsupport::on_clean = sub {	1569	=back
		1570
		1571	=head2 CORE EXTENSIONS
		1572
		1573	Functions and methods that extend core deliantra objects.
		1574
		1575	=cut
		1576
		1577	package cf::player;
		1578
		1579	use Coro::AIO;
		1580
		1581	=head3 cf::player
		1582
		1583	=over 4
		1584
		1585	=item cf::player::num_playing
		1586
		1587	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1588
		1589	=cut
		1590
		1591	sub num_playing {
		1592	scalar grep
		1593	$_->ob->map
		1594	&& !$_->hidden
		1595	&& !$_->ob->flag (cf::FLAG_WIZ),
		1596	cf::player::list
		1597	}
		1598
		1599	=item cf::player::find $login
		1600
		1601	Returns the given player object, loading it if necessary (might block).
		1602
		1603	=cut
		1604
		1605	sub playerdir($) {
		1606	"$PLAYERDIR/"
		1607	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1608	}
		1609
		1610	sub path($) {
		1611	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1612
		1613	(playerdir $login) . "/playerdata"
		1614	}
		1615
		1616	sub find_active($) {
		1617	$cf::PLAYER{$_[0]}
		1618	and $cf::PLAYER{$_[0]}->active
		1619	and $cf::PLAYER{$_[0]}
		1620	}
		1621
		1622	sub exists($) {
761	my ($map) = @_;	1623	my ($login) = @_;
762		1624
763	my $path = $map->tmpname;	1625	$cf::PLAYER{$login}
764	defined $path or return;	1626	or !aio_stat path $login
765
766	unlink "$path.pst";
767	};
768
769	# old style persistent data, TODO: remove #d#
770	*cf::mapsupport::on_swapin = sub {
771	my ($map) = @_;
772
773	my $path = $map->tmpname;
774	$path = $map->path unless defined $path;
775
776	warn "$path.cfperl\n";#d#
777
778	open my $fh, "<:raw", "$path.cfperl"
779	or return; # no perl data
780
781	my $data = Storable::thaw do { local $/; <$fh> };
782
783	$data->{version} <= 1
784	or return; # too new
785
786	$map->_set_obs ($data->{obs});
787	$map->invoke (EVENT_MAP_UPGRADE);
788	};
789
790	attach_to_maps prio => -10000, package => cf::mapsupport::;
791
792	#############################################################################
793	# load/save perl data associated with player->ob objects
794
795	sub all_objects(@) {
796	@_, map all_objects ($_->inv), @_
797	}	1627	}
798		1628
799	attach_to_players	1629	sub find($) {
		1630	return $cf::PLAYER{$_[0]} || do {
		1631	my $login = $_[0];
		1632
		1633	my $guard = cf::lock_acquire "user_find:$login";
		1634
		1635	$cf::PLAYER{$_[0]} || do {
		1636	# rename old playerfiles to new ones
		1637	#TODO: remove when no longer required
		1638	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1639	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1640	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1641	aio_unlink +(playerdir $login) . "/$login.pl";
		1642
		1643	my $f = new_from_file cf::object::thawer path $login
		1644	or return;
		1645
		1646	my $pl = cf::player::load_pl $f
		1647	or return;
		1648
		1649	local $cf::PLAYER_LOADING{$login} = $pl;
		1650	$f->resolve_delayed_derefs;
		1651	$cf::PLAYER{$login} = $pl
		1652	}
		1653	}
		1654	}
		1655
		1656	cf::player->attach (
800	on_load => sub {	1657	on_load => sub {
801	my ($pl, $path) = @_;	1658	my ($pl, $path) = @_;
802		1659
803	for my $o (all_objects $pl->ob) {	1660	# restore slots saved in save, below
804	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1661	my $slots = delete $pl->{_slots};
805	$o->set_ob_key_value ("_perl_data");
806		1662
807	%$o = %{ Storable::thaw pack "H*", $value };	1663	$pl->ob->current_weapon ($slots->[0]);
		1664	$pl->combat_ob ($slots->[1]);
		1665	$pl->ranged_ob ($slots->[2]);
		1666	},
		1667	);
		1668
		1669	sub save($) {
		1670	my ($pl) = @_;
		1671
		1672	return if $pl->{deny_save};
		1673
		1674	my $path = path $pl;
		1675	my $guard = cf::lock_acquire "user_save:$path";
		1676
		1677	return if $pl->{deny_save};
		1678
		1679	aio_mkdir playerdir $pl, 0770;
		1680	$pl->{last_save} = $cf::RUNTIME;
		1681
		1682	cf::get_slot 0.01;
		1683
		1684	# save slots, to be restored later
		1685	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1686
		1687	$pl->save_pl ($path);
		1688	cf::cede_to_tick;
		1689	}
		1690
		1691	sub new($) {
		1692	my ($login) = @_;
		1693
		1694	my $self = create;
		1695
		1696	$self->ob->name ($login);
		1697	$self->{deny_save} = 1;
		1698
		1699	$cf::PLAYER{$login} = $self;
		1700
		1701	$self
		1702	}
		1703
		1704	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1705
		1706	=cut
		1707
		1708	sub send_msg {
		1709	my $ns = shift->ns
		1710	or return;
		1711	$ns->send_msg (@_);
		1712	}
		1713
		1714	=item $pl->quit_character
		1715
		1716	Nukes the player without looking back. If logged in, the connection will
		1717	be destroyed. May block for a long time.
		1718
		1719	=cut
		1720
		1721	sub quit_character {
		1722	my ($pl) = @_;
		1723
		1724	my $name = $pl->ob->name;
		1725
		1726	$pl->{deny_save} = 1;
		1727	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1728
		1729	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1730	$pl->deactivate;
		1731
		1732	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1733	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1734	ext::highscore::check ($pl->ob);
		1735
		1736	$pl->ns->destroy if $pl->ns;
		1737
		1738	my $path = playerdir $pl;
		1739	my $temp = "$path~$cf::RUNTIME~deleting~";
		1740	aio_rename $path, $temp;
		1741	delete $cf::PLAYER{$pl->ob->name};
		1742	$pl->destroy;
		1743
		1744	my $prefix = qr<^~\Q$name\E/>;
		1745
		1746	# nuke player maps
		1747	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1748
		1749	IO::AIO::aio_rmtree $temp;
		1750	}
		1751
		1752	=item $pl->kick
		1753
		1754	Kicks a player out of the game. This destroys the connection.
		1755
		1756	=cut
		1757
		1758	sub kick {
		1759	my ($pl, $kicker) = @_;
		1760
		1761	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1762	$pl->killer ("kicked");
		1763	$pl->ns->destroy;
		1764	}
		1765
		1766	=item cf::player::list_logins
		1767
		1768	Returns am arrayref of all valid playernames in the system, can take a
		1769	while and may block, so not sync_job-capable, ever.
		1770
		1771	=cut
		1772
		1773	sub list_logins {
		1774	my $dirs = aio_readdir $PLAYERDIR
		1775	or return [];
		1776
		1777	my @logins;
		1778
		1779	for my $login (@$dirs) {
		1780	my $path = path $login;
		1781
		1782	# a .pst is a dead give-away for a valid player
		1783	# if no pst file found, open and chekc for blocked users
		1784	if (aio_stat "$path.pst") {
		1785	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1786	aio_read $fh, 0, 512, my $buf, 0 or next;
		1787	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1788	}
		1789
		1790	utf8::decode $login;
		1791	push @logins, $login;
		1792	}
		1793
		1794	\@logins
		1795	}
		1796
		1797	=item $player->maps
		1798
		1799	=item cf::player::maps $login
		1800
		1801	Returns an arrayref of map paths that are private for this
		1802	player. May block.
		1803
		1804	=cut
		1805
		1806	sub maps($) {
		1807	my ($pl) = @_;
		1808
		1809	$pl = ref $pl ? $pl->ob->name : $pl;
		1810
		1811	my $files = aio_readdir playerdir $pl
		1812	or return;
		1813
		1814	my @paths;
		1815
		1816	for (@$files) {
		1817	utf8::decode $_;
		1818	next if /\.(?:pl|pst)$/;
		1819	next unless /^$PATH_SEP/o;
		1820
		1821	push @paths, cf::map::normalise "~$pl/$_", $pl->map;
		1822	}
		1823
		1824	\@paths
		1825	}
		1826
		1827	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1828
		1829	Expand deliantra pod fragments into protocol xml.
		1830
		1831	=item $player->ext_reply ($msgid, @msg)
		1832
		1833	Sends an ext reply to the player.
		1834
		1835	=cut
		1836
		1837	sub ext_reply($$@) {
		1838	my ($self, $id, @msg) = @_;
		1839
		1840	$self->ns->ext_reply ($id, @msg)
		1841	}
		1842
		1843	=item $player->ext_msg ($type, @msg)
		1844
		1845	Sends an ext event to the client.
		1846
		1847	=cut
		1848
		1849	sub ext_msg($$@) {
		1850	my ($self, $type, @msg) = @_;
		1851
		1852	$self->ns->ext_msg ($type, @msg);
		1853	}
		1854
		1855	=head3 cf::region
		1856
		1857	=over 4
		1858
		1859	=cut
		1860
		1861	package cf::region;
		1862
		1863	=item cf::region::find_by_path $path
		1864
		1865	Tries to decuce the likely region for a map knowing only its path.
		1866
		1867	=cut
		1868
		1869	sub find_by_path($) {
		1870	my ($path) = @_;
		1871
		1872	$path =~ s/^~[^\/]*//; # skip ~login
		1873
		1874	my ($match, $specificity);
		1875
		1876	for my $region (list) {
		1877	if ($region->{match} && $path =~ $region->{match}) {
		1878	($match, $specificity) = ($region, $region->specificity)
		1879	if $region->specificity > $specificity;
		1880	}
		1881	}
		1882
		1883	$match
		1884	}
		1885
		1886	=back
		1887
		1888	=head3 cf::map
		1889
		1890	=over 4
		1891
		1892	=cut
		1893
		1894	package cf::map;
		1895
		1896	use Fcntl;
		1897	use Coro::AIO;
		1898
		1899	use overload
		1900	'""' => \&as_string,
		1901	fallback => 1;
		1902
		1903	our $MAX_RESET = 3600;
		1904	our $DEFAULT_RESET = 3000;
		1905
		1906	sub generate_random_map {
		1907	my ($self, $rmp) = @_;
		1908
		1909	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1910
		1911	$self->_create_random_map ($rmp);
		1912	}
		1913
		1914	=item cf::map->register ($regex, $prio)
		1915
		1916	Register a handler for the map path matching the given regex at the
		1917	givne priority (higher is better, built-in handlers have priority 0, the
		1918	default).
		1919
		1920	=cut
		1921
		1922	sub register {
		1923	my (undef, $regex, $prio) = @_;
		1924	my $pkg = caller;
		1925
		1926	push @{"$pkg\::ISA"}, __PACKAGE__;
		1927
		1928	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1929	}
		1930
		1931	# also paths starting with '/'
		1932	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1933
		1934	sub thawer_merge {
		1935	my ($self, $merge) = @_;
		1936
		1937	# we have to keep some variables in memory intact
		1938	local $self->{path};
		1939	local $self->{load_path};
		1940
		1941	$self->SUPER::thawer_merge ($merge);
		1942	}
		1943
		1944	sub normalise {
		1945	my ($path, $base) = @_;
		1946
		1947	$path = "$path"; # make sure it's a string
		1948
		1949	$path =~ s/\.map$//;
		1950
		1951	# map plan:
		1952	#
		1953	# /! non-realised random map exit (special hack!)
		1954	# {... are special paths that are not being touched
		1955	# ?xxx/... are special absolute paths
		1956	# ?random/... random maps
		1957	# /... normal maps
		1958	# ~user/... per-player map of a specific user
		1959	# !up !down for quad maps, or other maps with up/down layers
		1960
		1961	$path =~ s/$PATH_SEP/\//go;
		1962
		1963	# treat it as relative path if it starts with
		1964	# something that looks reasonable
		1965	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1966	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1967
		1968	$base =~ s{[^/]+/?$}{};
		1969	$path = "$base/$path";
		1970
		1971	} elsif ($path eq '!up') {
		1972	$base && ref $base
		1973	or Carp::carp "normalise called with relative tile path and no base: '$path'";
		1974
		1975	my $uppth = $base->tile_path (cf::TILE_UP);
		1976	$path = $uppth if $uppth;
		1977
		1978	} elsif ($path eq '!down') {
		1979	$base && ref $base
		1980	or Carp::carp "normalise called with relative tile path and no base: '$path'";
		1981
		1982	my $dpth = $base->tile_path (cf::TILE_DOWN);
		1983	$path = $dpth if $dpth;
		1984	}
		1985
		1986	for ($path) {
		1987	redo if s{/\.?/}{/};
		1988	redo if s{/[^/]+/\.\./}{/};
		1989	}
		1990
		1991	$path
		1992	}
		1993
		1994	sub new_from_path {
		1995	my (undef, $path, $base) = @_;
		1996
		1997	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1998
		1999	$path = normalise $path, $base;
		2000
		2001	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2002	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2003	my $self = bless cf::map::new, $pkg;
		2004	$self->{path} = $path; $self->path ($path);
		2005	$self->init; # pass $1 etc.
		2006	return $self;
		2007	}
		2008	}
		2009
		2010	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2011	()
		2012	}
		2013
		2014	# may re-bless or do other evil things
		2015	sub init {
		2016	my ($self) = @_;
		2017
		2018	$self
		2019	}
		2020
		2021	sub as_string {
		2022	my ($self) = @_;
		2023
		2024	"$self->{path}"
		2025	}
		2026
		2027	# the displayed name, this is a one way mapping
		2028	sub visible_name {
		2029	&as_string
		2030	}
		2031
		2032	# the original (read-only) location
		2033	sub load_path {
		2034	my ($self) = @_;
		2035
		2036	"$MAPDIR/$self->{path}.map"
		2037	}
		2038
		2039	# the temporary/swap location
		2040	sub save_path {
		2041	my ($self) = @_;
		2042
		2043	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2044	"$TMPDIR/$path.map"
		2045	}
		2046
		2047	# the unique path, undef == no special unique path
		2048	sub uniq_path {
		2049	my ($self) = @_;
		2050
		2051	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2052	"$UNIQUEDIR/$path"
		2053	}
		2054
		2055	sub decay_objects {
		2056	my ($self) = @_;
		2057
		2058	return if $self->{deny_reset};
		2059
		2060	$self->do_decay_objects;
		2061	}
		2062
		2063	sub unlink_save {
		2064	my ($self) = @_;
		2065
		2066	utf8::encode (my $save = $self->save_path);
		2067	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2068	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2069	}
		2070
		2071	sub load_header_from($) {
		2072	my ($self, $path) = @_;
		2073
		2074	utf8::encode $path;
		2075	my $f = new_from_file cf::object::thawer $path
		2076	or return;
		2077
		2078	$self->_load_header ($f)
		2079	or return;
		2080
		2081	local $MAP_LOADING{$self->{path}} = $self;
		2082	$f->resolve_delayed_derefs;
		2083
		2084	$self->{load_path} = $path;
		2085
		2086	1
		2087	}
		2088
		2089	sub load_header_orig {
		2090	my ($self) = @_;
		2091
		2092	$self->load_header_from ($self->load_path)
		2093	}
		2094
		2095	sub load_header_temp {
		2096	my ($self) = @_;
		2097
		2098	$self->load_header_from ($self->save_path)
		2099	}
		2100
		2101	sub prepare_temp {
		2102	my ($self) = @_;
		2103
		2104	$self->last_access ((delete $self->{last_access})
		2105	|| $cf::RUNTIME); #d#
		2106	# safety
		2107	$self->{instantiate_time} = $cf::RUNTIME
		2108	if $self->{instantiate_time} > $cf::RUNTIME;
		2109	}
		2110
		2111	sub prepare_orig {
		2112	my ($self) = @_;
		2113
		2114	$self->{load_original} = 1;
		2115	$self->{instantiate_time} = $cf::RUNTIME;
		2116	$self->last_access ($cf::RUNTIME);
		2117	$self->instantiate;
		2118	}
		2119
		2120	sub load_header {
		2121	my ($self) = @_;
		2122
		2123	if ($self->load_header_temp) {
		2124	$self->prepare_temp;
		2125	} else {
		2126	$self->load_header_orig
		2127	or return;
		2128	$self->prepare_orig;
		2129	}
		2130
		2131	$self->{deny_reset} = 1
		2132	if $self->no_reset;
		2133
		2134	$self->default_region (cf::region::find_by_path $self->{path})
		2135	unless $self->default_region;
		2136
		2137	1
		2138	}
		2139
		2140	sub find;
		2141	sub find {
		2142	my ($path, $origin) = @_;
		2143
		2144	cf::cede_to_tick;
		2145
		2146	$path = normalise $path, $origin;
		2147
		2148	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2149	my $guard2 = cf::lock_acquire "map_find:$path";
		2150
		2151	$cf::MAP{$path} || do {
		2152	my $map = new_from_path cf::map $path
		2153	or return;
		2154
		2155	$map->{last_save} = $cf::RUNTIME;
		2156
		2157	$map->load_header
		2158	or return;
		2159
		2160	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2161	# doing this can freeze the server in a sync job, obviously
		2162	#$cf::WAIT_FOR_TICK->wait;
		2163	undef $guard2;
		2164	undef $guard1;
		2165	$map->reset;
		2166	return find $path;
		2167	}
		2168
		2169	$cf::MAP{$path} = $map
		2170	}
		2171	}
		2172
		2173	sub pre_load { }
		2174	#sub post_load { } # XS
		2175
		2176	sub load {
		2177	my ($self) = @_;
		2178
		2179	local $self->{deny_reset} = 1; # loading can take a long time
		2180
		2181	my $path = $self->{path};
		2182
		2183	{
		2184	my $guard = cf::lock_acquire "map_data:$path";
		2185
		2186	return unless $self->valid;
		2187	return unless $self->in_memory == cf::MAP_SWAPPED;
		2188
		2189	$self->in_memory (cf::MAP_LOADING);
		2190
		2191	$self->alloc;
		2192
		2193	$self->pre_load;
		2194	cf::cede_to_tick;
		2195
		2196	if (exists $self->{load_path}) {
		2197	my $f = new_from_file cf::object::thawer $self->{load_path};
		2198	$f->skip_block;
		2199	$self->_load_objects ($f)
		2200	or return;
		2201
		2202	$self->post_load_original
		2203	if delete $self->{load_original};
		2204
		2205	if (my $uniq = $self->uniq_path) {
		2206	utf8::encode $uniq;
		2207	unless (aio_stat $uniq) {
		2208	if (my $f = new_from_file cf::object::thawer $uniq) {
		2209	$self->clear_unique_items;
		2210	$self->_load_objects ($f);
		2211	$f->resolve_delayed_derefs;
		2212	}
		2213	}
808	}	2214	}
		2215
		2216	$f->resolve_delayed_derefs;
809	}	2217	}
		2218
		2219	cf::cede_to_tick;
		2220	# now do the right thing for maps
		2221	$self->link_multipart_objects;
		2222	$self->difficulty ($self->estimate_difficulty)
		2223	unless $self->difficulty;
		2224	cf::cede_to_tick;
		2225
		2226	unless ($self->{deny_activate}) {
		2227	$self->decay_objects;
		2228	$self->fix_auto_apply;
		2229	$self->update_buttons;
		2230	cf::cede_to_tick;
		2231	$self->activate;
		2232	}
		2233
		2234	$self->{last_save} = $cf::RUNTIME;
		2235	$self->last_access ($cf::RUNTIME);
		2236
		2237	$self->in_memory (cf::MAP_ACTIVE);
810	},	2238	}
811	;
812		2239
813	#############################################################################	2240	$self->post_load;
814	# core extensions - in perl
815		2241
816	=item cf::player::exists $login	2242	1
817
818	Returns true when the given account exists.
819
820	=cut
821
822	sub cf::player::exists($) {
823	cf::player::find $_[0]
824	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
825	}	2243	}
826		2244
		2245	# customize the map for a given player, i.e.
		2246	# return the _real_ map. used by e.g. per-player
		2247	# maps to change the path to ~playername/mappath
		2248	sub customise_for {
		2249	my ($self, $ob) = @_;
		2250
		2251	return find "~" . $ob->name . "/" . $self->{path}
		2252	if $self->per_player;
		2253
		2254	# return find "?party/" . $ob->name . "/" . $self->{path}
		2255	# if $self->per_party;
		2256
		2257	$self
		2258	}
		2259
		2260	# find and load all maps in the 3x3 area around a map
		2261	sub load_neighbours {
		2262	my ($map) = @_;
		2263
		2264	my @neigh; # diagonal neighbours
		2265
		2266	for (0 .. 3) {
		2267	my $neigh = $map->tile_path ($_)
		2268	or next;
		2269	$neigh = find $neigh, $map
		2270	or next;
		2271	$neigh->load;
		2272
		2273	# now find the diagonal neighbours
		2274	push @neigh,
		2275	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2276	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2277	}
		2278
		2279	for (grep defined $_->[0], @neigh) {
		2280	my ($path, $origin) = @$_;
		2281	my $neigh = find $path, $origin
		2282	or next;
		2283	$neigh->load;
		2284	}
		2285	}
		2286
		2287	sub find_sync {
		2288	my ($path, $origin) = @_;
		2289
		2290	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2291	if $Coro::current == $Coro::main;
		2292
		2293	find $path, $origin
		2294	}
		2295
		2296	sub do_load_sync {
		2297	my ($map) = @_;
		2298
		2299	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2300	if $Coro::current == $Coro::main;
		2301
		2302	$map->load;
		2303	}
		2304
		2305	our %MAP_PREFETCH;
		2306	our $MAP_PREFETCHER = undef;
		2307
		2308	sub find_async {
		2309	my ($path, $origin, $load) = @_;
		2310
		2311	$path = normalise $path, $origin;
		2312
		2313	if (my $map = $cf::MAP{$path}) {
		2314	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2315	}
		2316
		2317	$MAP_PREFETCH{$path} |= $load;
		2318
		2319	$MAP_PREFETCHER ||= cf::async {
		2320	$Coro::current->{desc} = "map prefetcher";
		2321
		2322	while (%MAP_PREFETCH) {
		2323	while (my ($k, $v) = each %MAP_PREFETCH) {
		2324	if (my $map = find $k) {
		2325	$map->load if $v;
		2326	}
		2327
		2328	delete $MAP_PREFETCH{$k};
		2329	}
		2330	}
		2331	undef $MAP_PREFETCHER;
		2332	};
		2333	$MAP_PREFETCHER->prio (6);
		2334
		2335	()
		2336	}
		2337
		2338	# common code, used by both ->save and ->swapout
		2339	sub _save {
		2340	my ($self) = @_;
		2341
		2342	$self->{last_save} = $cf::RUNTIME;
		2343
		2344	return unless $self->dirty;
		2345
		2346	my $save = $self->save_path; utf8::encode $save;
		2347	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2348
		2349	$self->{load_path} = $save;
		2350
		2351	return if $self->{deny_save};
		2352
		2353	local $self->{last_access} = $self->last_access;#d#
		2354
		2355	cf::async {
		2356	$Coro::current->{desc} = "map player save";
		2357	$_->contr->save for $self->players;
		2358	};
		2359
		2360	cf::get_slot 0.02;
		2361
		2362	if ($uniq) {
		2363	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2364	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2365	} else {
		2366	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2367	}
		2368	}
		2369
		2370	sub save {
		2371	my ($self) = @_;
		2372
		2373	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2374
		2375	$self->_save;
		2376	}
		2377
		2378	sub swap_out {
		2379	my ($self) = @_;
		2380
		2381	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2382
		2383	return if $self->in_memory != cf::MAP_ACTIVE;
		2384	return if $self->{deny_save};
		2385	return if $self->players;
		2386
		2387	# first deactivate the map and "unlink" it from the core
		2388	$self->deactivate;
		2389	$_->clear_links_to ($self) for values %cf::MAP;
		2390	$self->in_memory (cf::MAP_SWAPPED);
		2391
		2392	# then atomically save
		2393	$self->_save;
		2394
		2395	# then free the map
		2396	$self->clear;
		2397	}
		2398
		2399	sub reset_at {
		2400	my ($self) = @_;
		2401
		2402	# TODO: safety, remove and allow resettable per-player maps
		2403	return 1e99 if $self->{deny_reset};
		2404
		2405	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2406	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2407
		2408	$time + $to
		2409	}
		2410
		2411	sub should_reset {
		2412	my ($self) = @_;
		2413
		2414	$self->reset_at <= $cf::RUNTIME
		2415	}
		2416
		2417	sub reset {
		2418	my ($self) = @_;
		2419
		2420	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2421
		2422	return if $self->players;
		2423
		2424	cf::trace "resetting map ", $self->path, "\n";
		2425
		2426	$self->in_memory (cf::MAP_SWAPPED);
		2427
		2428	# need to save uniques path
		2429	unless ($self->{deny_save}) {
		2430	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2431
		2432	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2433	if $uniq;
		2434	}
		2435
		2436	delete $cf::MAP{$self->path};
		2437
		2438	$self->deactivate;
		2439	$_->clear_links_to ($self) for values %cf::MAP;
		2440	$self->clear;
		2441
		2442	$self->unlink_save;
		2443	$self->destroy;
		2444	}
		2445
		2446	my $nuke_counter = "aaaa";
		2447
		2448	sub nuke {
		2449	my ($self) = @_;
		2450
		2451	{
		2452	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2453
		2454	delete $cf::MAP{$self->path};
		2455
		2456	$self->unlink_save;
		2457
		2458	bless $self, "cf::map::wrap";
		2459	delete $self->{deny_reset};
		2460	$self->{deny_save} = 1;
		2461	$self->reset_timeout (1);
		2462	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2463
		2464	$cf::MAP{$self->path} = $self;
		2465	}
		2466
		2467	$self->reset; # polite request, might not happen
		2468	}
		2469
		2470	=item $maps = cf::map::tmp_maps
		2471
		2472	Returns an arrayref with all map paths of currently instantiated and saved
		2473	maps. May block.
		2474
		2475	=cut
		2476
		2477	sub tmp_maps() {
		2478	[
		2479	map {
		2480	utf8::decode $_;
		2481	/\.map$/
		2482	? normalise $_
		2483	: ()
		2484	} @{ aio_readdir $TMPDIR or [] }
		2485	]
		2486	}
		2487
		2488	=item $maps = cf::map::random_maps
		2489
		2490	Returns an arrayref with all map paths of currently instantiated and saved
		2491	random maps. May block.
		2492
		2493	=cut
		2494
		2495	sub random_maps() {
		2496	[
		2497	map {
		2498	utf8::decode $_;
		2499	/\.map$/
		2500	? normalise "?random/$_"
		2501	: ()
		2502	} @{ aio_readdir $RANDOMDIR or [] }
		2503	]
		2504	}
		2505
		2506	=item cf::map::unique_maps
		2507
		2508	Returns an arrayref of paths of all shared maps that have
		2509	instantiated unique items. May block.
		2510
		2511	=cut
		2512
		2513	sub unique_maps() {
		2514	[
		2515	map {
		2516	utf8::decode $_;
		2517	s/\.map$//; # TODO future compatibility hack
		2518	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2519	? ()
		2520	: normalise $_
		2521	} @{ aio_readdir $UNIQUEDIR or [] }
		2522	]
		2523	}
		2524
		2525	=item cf::map::static_maps
		2526
		2527	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2528	file in the shared directory excluding F</styles> and F</editor>). May
		2529	block.
		2530
		2531	=cut
		2532
		2533	sub static_maps() {
		2534	my @dirs = "";
		2535	my @maps;
		2536
		2537	while (@dirs) {
		2538	my $dir = shift @dirs;
		2539
		2540	next if $dir eq "/styles" || $dir eq "/editor";
		2541
		2542	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2543	or return;
		2544
		2545	for (@$files) {
		2546	s/\.map$// or next;
		2547	utf8::decode $_;
		2548	push @maps, "$dir/$_";
		2549	}
		2550
		2551	push @dirs, map "$dir/$_", @$dirs;
		2552	}
		2553
		2554	\@maps
		2555	}
		2556
		2557	=back
		2558
		2559	=head3 cf::object
		2560
		2561	=cut
		2562
		2563	package cf::object;
		2564
		2565	=over 4
		2566
		2567	=item $ob->inv_recursive
		2568
		2569	Returns the inventory of the object I<and> their inventories, recursively,
		2570	but I<not> the object itself.
		2571
		2572	=cut
		2573
		2574	sub inv_recursive_;
		2575	sub inv_recursive_ {
		2576	map { $_, inv_recursive_ $_->inv } @_
		2577	}
		2578
		2579	sub inv_recursive {
		2580	inv_recursive_ inv $_[0]
		2581	}
		2582
		2583	=item $ref = $ob->ref
		2584
		2585	Creates and returns a persistent reference to an object that can be stored as a string.
		2586
		2587	=item $ob = cf::object::deref ($refstring)
		2588
		2589	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2590	even if the object actually exists. May block.
		2591
		2592	=cut
		2593
		2594	sub deref {
		2595	my ($ref) = @_;
		2596
		2597	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2598	my ($uuid, $name) = ($1, $2);
		2599	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2600	or return;
		2601	$pl->ob->uuid eq $uuid
		2602	or return;
		2603
		2604	$pl->ob
		2605	} else {
		2606	warn "$ref: cannot resolve object reference\n";
		2607	undef
		2608	}
		2609	}
		2610
		2611	package cf;
		2612
		2613	=back
		2614
		2615	=head3 cf::object::player
		2616
		2617	=over 4
		2618
827	=item $player->reply ($npc, $msg[, $flags])	2619	=item $player_object->reply ($npc, $msg[, $flags])
828		2620
829	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2621	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
830	can be C<undef>. Does the right thing when the player is currently in a	2622	can be C<undef>. Does the right thing when the player is currently in a
831	dialogue with the given NPC character.	2623	dialogue with the given NPC character.
832		2624
833	=cut	2625	=cut
834		2626
		2627	our $SAY_CHANNEL = {
		2628	id => "say",
		2629	title => "Map",
		2630	reply => "say ",
		2631	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2632	};
		2633
		2634	our $CHAT_CHANNEL = {
		2635	id => "chat",
		2636	title => "Chat",
		2637	reply => "chat ",
		2638	tooltip => "Player chat and shouts, global to the server.",
		2639	};
		2640
835	# rough implementation of a future "reply" method that works	2641	# rough implementation of a future "reply" method that works
836	# with dialog boxes.	2642	# with dialog boxes.
		2643	#TODO: the first argument must go, split into a $npc->reply_to ( method
837	sub cf::object::player::reply($$$;$) {	2644	sub cf::object::player::reply($$$;$) {
838	my ($self, $npc, $msg, $flags) = @_;	2645	my ($self, $npc, $msg, $flags) = @_;
839		2646
840	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2647	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
841		2648
842	if ($self->{record_replies}) {	2649	if ($self->{record_replies}) {
843	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2650	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2651
844	} else {	2652	} else {
		2653	my $pl = $self->contr;
		2654
		2655	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2656	my $dialog = $pl->{npc_dialog};
		2657	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2658
		2659	} else {
845	$msg = $npc->name . " says: $msg" if $npc;	2660	$msg = $npc->name . " says: $msg" if $npc;
846	$self->message ($msg, $flags);	2661	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2662	}
		2663	}
		2664	}
		2665
		2666	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2667
		2668	=cut
		2669
		2670	sub cf::object::send_msg {
		2671	my $pl = shift->contr
		2672	or return;
		2673	$pl->send_msg (@_);
		2674	}
		2675
		2676	=item $player_object->may ("access")
		2677
		2678	Returns wether the given player is authorized to access resource "access"
		2679	(e.g. "command_wizcast").
		2680
		2681	=cut
		2682
		2683	sub cf::object::player::may {
		2684	my ($self, $access) = @_;
		2685
		2686	$self->flag (cf::FLAG_WIZ) ||
		2687	(ref $cf::CFG{"may_$access"}
		2688	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2689	: $cf::CFG{"may_$access"})
		2690	}
		2691
		2692	=item $player_object->enter_link
		2693
		2694	Freezes the player and moves him/her to a special map (C<{link}>).
		2695
		2696	The player should be reasonably safe there for short amounts of time (e.g.
		2697	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2698	though, as the player cannot control the character while it is on the link
		2699	map.
		2700
		2701	Will never block.
		2702
		2703	=item $player_object->leave_link ($map, $x, $y)
		2704
		2705	Moves the player out of the special C<{link}> map onto the specified
		2706	map. If the map is not valid (or omitted), the player will be moved back
		2707	to the location he/she was before the call to C<enter_link>, or, if that
		2708	fails, to the emergency map position.
		2709
		2710	Might block.
		2711
		2712	=cut
		2713
		2714	sub link_map {
		2715	unless ($LINK_MAP) {
		2716	$LINK_MAP = cf::map::find "{link}"
		2717	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2718	$LINK_MAP->load;
		2719	}
		2720
		2721	$LINK_MAP
		2722	}
		2723
		2724	sub cf::object::player::enter_link {
		2725	my ($self) = @_;
		2726
		2727	$self->deactivate_recursive;
		2728
		2729	++$self->{_link_recursion};
		2730
		2731	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2732
		2733	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2734	if $self->map && $self->map->{path} ne "{link}";
		2735
		2736	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2737	}
		2738
		2739	sub cf::object::player::leave_link {
		2740	my ($self, $map, $x, $y) = @_;
		2741
		2742	return unless $self->contr->active;
		2743
		2744	my $link_pos = delete $self->{_link_pos};
		2745
		2746	unless ($map) {
		2747	# restore original map position
		2748	($map, $x, $y) = @{ $link_pos || [] };
		2749	$map = cf::map::find $map;
		2750
		2751	unless ($map) {
		2752	($map, $x, $y) = @$EMERGENCY_POSITION;
		2753	$map = cf::map::find $map
		2754	or die "FATAL: cannot load emergency map\n";
		2755	}
		2756	}
		2757
		2758	($x, $y) = (-1, -1)
		2759	unless (defined $x) && (defined $y);
		2760
		2761	# use -1 or undef as default coordinates, not 0, 0
		2762	($x, $y) = ($map->enter_x, $map->enter_y)
		2763	if $x <= 0 && $y <= 0;
		2764
		2765	$map->load;
		2766	$map->load_neighbours;
		2767
		2768	return unless $self->contr->active;
		2769
		2770	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2771	if ($self->enter_map ($map, $x, $y)) {
		2772	# entering was successful
		2773	delete $self->{_link_recursion};
		2774	# only activate afterwards, to support waiting in hooks
		2775	$self->activate_recursive;
		2776	}
		2777
		2778	}
		2779
		2780	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2781
		2782	Moves the player to the given map-path and coordinates by first freezing
		2783	her, loading and preparing them map, calling the provided $check callback
		2784	that has to return the map if sucecssful, and then unfreezes the player on
		2785	the new (success) or old (failed) map position. In either case, $done will
		2786	be called at the end of this process.
		2787
		2788	Note that $check will be called with a potentially non-loaded map, so if
		2789	it needs a loaded map it has to call C<< ->load >>.
		2790
		2791	=cut
		2792
		2793	our $GOTOGEN;
		2794
		2795	sub cf::object::player::goto {
		2796	my ($self, $path, $x, $y, $check, $done) = @_;
		2797
		2798	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2799	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2800	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2801	($path, $x, $y) = @$EMERGENCY_POSITION;
		2802	}
		2803
		2804	# do generation counting so two concurrent goto's will be executed in-order
		2805	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2806
		2807	$self->enter_link;
		2808
		2809	(async {
		2810	$Coro::current->{desc} = "player::goto $path $x $y";
		2811
		2812	# *tag paths override both path and x|y
		2813	if ($path =~ /^\*(.*)$/) {
		2814	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2815	my $ob = $obs[rand @obs];
		2816
		2817	# see if we actually can go there
		2818	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2819	$ob = $obs[rand @obs];
		2820	} else {
		2821	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2822	}
		2823	# else put us there anyways for now #d#
		2824
		2825	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2826	} else {
		2827	($path, $x, $y) = (undef, undef, undef);
		2828	}
		2829	}
		2830
		2831	my $map = eval {
		2832	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2833
		2834	if ($map) {
		2835	$map = $map->customise_for ($self);
		2836	$map = $check->($map, $x, $y, $self) if $check && $map;
		2837	} else {
		2838	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2839	}
		2840
		2841	$map
		2842	};
		2843
		2844	if ($@) {
		2845	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2846	LOG llevError | logBacktrace, Carp::longmess $@;
		2847	}
		2848
		2849	if ($gen == $self->{_goto_generation}) {
		2850	delete $self->{_goto_generation};
		2851	$self->leave_link ($map, $x, $y);
		2852	}
		2853
		2854	$done->($self) if $done;
		2855	})->prio (1);
		2856	}
		2857
		2858	=item $player_object->enter_exit ($exit_object)
		2859
		2860	=cut
		2861
		2862	sub parse_random_map_params {
		2863	my ($spec) = @_;
		2864
		2865	my $rmp = { # defaults
		2866	xsize => (cf::rndm 15, 40),
		2867	ysize => (cf::rndm 15, 40),
		2868	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2869	#layout => string,
847	}	2870	};
848	}
849		2871
		2872	for (split /\n/, $spec) {
		2873	my ($k, $v) = split /\s+/, $_, 2;
		2874
		2875	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2876	}
		2877
		2878	$rmp
		2879	}
		2880
		2881	sub prepare_random_map {
		2882	my ($exit) = @_;
		2883
		2884	# all this does is basically replace the /! path by
		2885	# a new random map path (?random/...) with a seed
		2886	# that depends on the exit object
		2887
		2888	my $rmp = parse_random_map_params $exit->msg;
		2889
		2890	if ($exit->map) {
		2891	$rmp->{region} = $exit->region->name;
		2892	$rmp->{origin_map} = $exit->map->path;
		2893	$rmp->{origin_x} = $exit->x;
		2894	$rmp->{origin_y} = $exit->y;
		2895
		2896	$exit->map->touch;
		2897	}
		2898
		2899	$rmp->{random_seed} ||= $exit->random_seed;
		2900
		2901	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2902	my $md5 = Digest::MD5::md5_hex $data;
		2903	my $meta = "$RANDOMDIR/$md5.meta";
		2904
		2905	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2906	aio_write $fh, 0, (length $data), $data, 0;
		2907	undef $fh;
		2908	aio_rename "$meta~", $meta;
		2909
		2910	my $slaying = "?random/$md5";
		2911
		2912	if ($exit->valid) {
		2913	$exit->slaying ("?random/$md5");
		2914	$exit->msg (undef);
		2915	}
		2916	}
		2917	}
		2918
		2919	sub cf::object::player::enter_exit {
		2920	my ($self, $exit) = @_;
		2921
		2922	return unless $self->type == cf::PLAYER;
		2923
		2924	$self->enter_link;
		2925
		2926	(async {
		2927	$Coro::current->{desc} = "enter_exit";
		2928
		2929	unless (eval {
		2930	$self->deactivate_recursive; # just to be sure
		2931
		2932	# random map handling
		2933	{
		2934	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2935
		2936	prepare_random_map $exit
		2937	if $exit->slaying eq "/!";
		2938	}
		2939
		2940	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2941	my $x = $exit->stats->hp;
		2942	my $y = $exit->stats->sp;
		2943
		2944	$self->goto ($map, $x, $y);
		2945
		2946	# if exit is damned, update players death & WoR home-position
		2947	$self->contr->savebed ($map, $x, $y)
		2948	if $exit->flag (cf::FLAG_DAMNED);
		2949
		2950	1
		2951	}) {
		2952	$self->message ("Something went wrong deep within the deliantra server. "
		2953	. "I'll try to bring you back to the map you were before. "
		2954	. "Please report this to the dungeon master!",
		2955	cf::NDI_UNIQUE | cf::NDI_RED);
		2956
		2957	error "ERROR in enter_exit: $@";
		2958	$self->leave_link;
		2959	}
		2960	})->prio (1);
		2961	}
		2962
		2963	=head3 cf::client
		2964
		2965	=over 4
		2966
		2967	=item $client->send_drawinfo ($text, $flags)
		2968
		2969	Sends a drawinfo packet to the client. Circumvents output buffering so
		2970	should not be used under normal circumstances.
		2971
		2972	=cut
		2973
		2974	sub cf::client::send_drawinfo {
		2975	my ($self, $text, $flags) = @_;
		2976
		2977	utf8::encode $text;
		2978	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2979	}
		2980
		2981	=item $client->send_big_packet ($pkt)
		2982
		2983	Like C<send_packet>, but tries to compress large packets, and fragments
		2984	them as required.
		2985
		2986	=cut
		2987
		2988	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2989
		2990	sub cf::client::send_big_packet {
		2991	my ($self, $pkt) = @_;
		2992
		2993	# try lzf for large packets
		2994	$pkt = "lzf " . Compress::LZF::compress $pkt
		2995	if 1024 <= length $pkt and $self->{can_lzf};
		2996
		2997	# split very large packets
		2998	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2999	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3000	$pkt = "frag";
		3001	}
		3002
		3003	$self->send_packet ($pkt);
		3004	}
		3005
		3006	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3007
		3008	Send a drawinfo or msg packet to the client, formatting the msg for the
		3009	client if neccessary. C<$type> should be a string identifying the type of
		3010	the message, with C<log> being the default. If C<$color> is negative, suppress
		3011	the message unless the client supports the msg packet.
		3012
		3013	=cut
		3014
		3015	# non-persistent channels (usually the info channel)
		3016	our %CHANNEL = (
		3017	"c/motd" => {
		3018	id => "infobox",
		3019	title => "MOTD",
		3020	reply => undef,
		3021	tooltip => "The message of the day",
		3022	},
		3023	"c/identify" => {
		3024	id => "infobox",
		3025	title => "Identify",
		3026	reply => undef,
		3027	tooltip => "Items recently identified",
		3028	},
		3029	"c/examine" => {
		3030	id => "infobox",
		3031	title => "Examine",
		3032	reply => undef,
		3033	tooltip => "Signs and other items you examined",
		3034	},
		3035	"c/shopinfo" => {
		3036	id => "infobox",
		3037	title => "Shop Info",
		3038	reply => undef,
		3039	tooltip => "What your bargaining skill tells you about the shop",
		3040	},
		3041	"c/book" => {
		3042	id => "infobox",
		3043	title => "Book",
		3044	reply => undef,
		3045	tooltip => "The contents of a note or book",
		3046	},
		3047	"c/lookat" => {
		3048	id => "infobox",
		3049	title => "Look",
		3050	reply => undef,
		3051	tooltip => "What you saw there",
		3052	},
		3053	"c/who" => {
		3054	id => "infobox",
		3055	title => "Players",
		3056	reply => undef,
		3057	tooltip => "Shows players who are currently online",
		3058	},
		3059	"c/body" => {
		3060	id => "infobox",
		3061	title => "Body Parts",
		3062	reply => undef,
		3063	tooltip => "Shows which body parts you posess and are available",
		3064	},
		3065	"c/statistics" => {
		3066	id => "infobox",
		3067	title => "Statistics",
		3068	reply => undef,
		3069	tooltip => "Shows your primary statistics",
		3070	},
		3071	"c/skills" => {
		3072	id => "infobox",
		3073	title => "Skills",
		3074	reply => undef,
		3075	tooltip => "Shows your experience per skill and item power",
		3076	},
		3077	"c/shopitems" => {
		3078	id => "infobox",
		3079	title => "Shop Items",
		3080	reply => undef,
		3081	tooltip => "Shows the items currently for sale in this shop",
		3082	},
		3083	"c/resistances" => {
		3084	id => "infobox",
		3085	title => "Resistances",
		3086	reply => undef,
		3087	tooltip => "Shows your resistances",
		3088	},
		3089	"c/pets" => {
		3090	id => "infobox",
		3091	title => "Pets",
		3092	reply => undef,
		3093	tooltip => "Shows information abotu your pets/a specific pet",
		3094	},
		3095	"c/perceiveself" => {
		3096	id => "infobox",
		3097	title => "Perceive Self",
		3098	reply => undef,
		3099	tooltip => "You gained detailed knowledge about yourself",
		3100	},
		3101	"c/uptime" => {
		3102	id => "infobox",
		3103	title => "Uptime",
		3104	reply => undef,
		3105	tooltip => "How long the server has been running since last restart",
		3106	},
		3107	"c/mapinfo" => {
		3108	id => "infobox",
		3109	title => "Map Info",
		3110	reply => undef,
		3111	tooltip => "Information related to the maps",
		3112	},
		3113	"c/party" => {
		3114	id => "party",
		3115	title => "Party",
		3116	reply => "gsay ",
		3117	tooltip => "Messages and chat related to your party",
		3118	},
		3119	"c/death" => {
		3120	id => "death",
		3121	title => "Death",
		3122	reply => undef,
		3123	tooltip => "Reason for and more info about your most recent death",
		3124	},
		3125	"c/say" => $SAY_CHANNEL,
		3126	"c/chat" => $CHAT_CHANNEL,
		3127	);
		3128
		3129	sub cf::client::send_msg {
		3130	my ($self, $channel, $msg, $color, @extra) = @_;
		3131
		3132	$msg = $self->pl->expand_cfpod ($msg)
		3133	unless $color & cf::NDI_VERBATIM;
		3134
		3135	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3136
		3137	# check predefined channels, for the benefit of C
		3138	if ($CHANNEL{$channel}) {
		3139	$channel = $CHANNEL{$channel};
		3140
		3141	$self->ext_msg (channel_info => $channel);
		3142	$channel = $channel->{id};
		3143
		3144	} elsif (ref $channel) {
		3145	# send meta info to client, if not yet sent
		3146	unless (exists $self->{channel}{$channel->{id}}) {
		3147	$self->{channel}{$channel->{id}} = $channel;
		3148	$self->ext_msg (channel_info => $channel);
		3149	}
		3150
		3151	$channel = $channel->{id};
		3152	}
		3153
		3154	return unless @extra || length $msg;
		3155
		3156	# default colour, mask it out
		3157	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3158	if $color & cf::NDI_DEF;
		3159
		3160	my $pkt = "msg "
		3161	. $self->{json_coder}->encode (
		3162	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3163	);
		3164
		3165	$self->send_big_packet ($pkt);
		3166	}
		3167
		3168	=item $client->ext_msg ($type, @msg)
		3169
		3170	Sends an ext event to the client.
		3171
		3172	=cut
		3173
		3174	sub cf::client::ext_msg($$@) {
		3175	my ($self, $type, @msg) = @_;
		3176
		3177	if ($self->extcmd == 2) {
		3178	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3179	} elsif ($self->extcmd == 1) { # TODO: remove
		3180	push @msg, msgtype => "event_$type";
		3181	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3182	}
		3183	}
		3184
850	=item $player->ext_reply ($msgid, $msgtype, %msg)	3185	=item $client->ext_reply ($msgid, @msg)
851		3186
852	Sends an ext reply to the player.	3187	Sends an ext reply to the client.
853		3188
854	=cut	3189	=cut
855		3190
856	sub cf::player::ext_reply($$$%) {	3191	sub cf::client::ext_reply($$@) {
857	my ($self, $id, %msg) = @_;	3192	my ($self, $id, @msg) = @_;
858		3193
859	$msg{msgid} = $id;	3194	if ($self->extcmd == 2) {
860		3195	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
861	$self->send ("ext " . to_json \%msg);	3196	} elsif ($self->extcmd == 1) {
		3197	#TODO: version 1, remove
		3198	unshift @msg, msgtype => "reply", msgid => $id;
		3199	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3200	}
862	}	3201	}
863		3202
864	#############################################################################	3203	=item $success = $client->query ($flags, "text", \&cb)
865	# map scripting support	3204
		3205	Queues a query to the client, calling the given callback with
		3206	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3207	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3208
		3209	Queries can fail, so check the return code. Or don't, as queries will
		3210	become reliable at some point in the future.
		3211
		3212	=cut
		3213
		3214	sub cf::client::query {
		3215	my ($self, $flags, $text, $cb) = @_;
		3216
		3217	return unless $self->state == ST_PLAYING
		3218	|| $self->state == ST_SETUP
		3219	|| $self->state == ST_CUSTOM;
		3220
		3221	$self->state (ST_CUSTOM);
		3222
		3223	utf8::encode $text;
		3224	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3225
		3226	$self->send_packet ($self->{query_queue}[0][0])
		3227	if @{ $self->{query_queue} } == 1;
		3228
		3229	1
		3230	}
		3231
		3232	cf::client->attach (
		3233	on_connect => sub {
		3234	my ($ns) = @_;
		3235
		3236	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3237	},
		3238	on_reply => sub {
		3239	my ($ns, $msg) = @_;
		3240
		3241	# this weird shuffling is so that direct followup queries
		3242	# get handled first
		3243	my $queue = delete $ns->{query_queue}
		3244	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3245
		3246	(shift @$queue)->[1]->($msg);
		3247	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3248
		3249	push @{ $ns->{query_queue} }, @$queue;
		3250
		3251	if (@{ $ns->{query_queue} } == @$queue) {
		3252	if (@$queue) {
		3253	$ns->send_packet ($ns->{query_queue}[0][0]);
		3254	} else {
		3255	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3256	}
		3257	}
		3258	},
		3259	on_exticmd => sub {
		3260	my ($ns, $buf) = @_;
		3261
		3262	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3263
		3264	if (ref $msg) {
		3265	my ($type, $reply, @payload) =
		3266	"ARRAY" eq ref $msg
		3267	? @$msg
		3268	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3269
		3270	my @reply;
		3271
		3272	if (my $cb = $EXTICMD{$type}) {
		3273	@reply = $cb->($ns, @payload);
		3274	}
		3275
		3276	$ns->ext_reply ($reply, @reply)
		3277	if $reply;
		3278
		3279	} else {
		3280	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3281	}
		3282
		3283	cf::override;
		3284	},
		3285	);
		3286
		3287	=item $client->async (\&cb)
		3288
		3289	Create a new coroutine, running the specified callback. The coroutine will
		3290	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3291	or loss of connection).
		3292
		3293	=cut
		3294
		3295	sub cf::client::async {
		3296	my ($self, $cb) = @_;
		3297
		3298	my $coro = &Coro::async ($cb);
		3299
		3300	$coro->on_destroy (sub {
		3301	delete $self->{_coro}{$coro+0};
		3302	});
		3303
		3304	$self->{_coro}{$coro+0} = $coro;
		3305
		3306	$coro
		3307	}
		3308
		3309	cf::client->attach (
		3310	on_client_destroy => sub {
		3311	my ($ns) = @_;
		3312
		3313	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3314	},
		3315	);
		3316
		3317	=back
		3318
		3319
		3320	=head2 SAFE SCRIPTING
		3321
		3322	Functions that provide a safe environment to compile and execute
		3323	snippets of perl code without them endangering the safety of the server
		3324	itself. Looping constructs, I/O operators and other built-in functionality
		3325	is not available in the safe scripting environment, and the number of
		3326	functions and methods that can be called is greatly reduced.
		3327
		3328	=cut
866		3329
867	our $safe = new Safe "safe";	3330	our $safe = new Safe "safe";
868	our $safe_hole = new Safe::Hole;	3331	our $safe_hole = new Safe::Hole;
869		3332
870	$SIG{FPE} = 'IGNORE';	3333	$SIG{FPE} = 'IGNORE';
871		3334
872	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3335	$safe->permit_only (Opcode::opset qw(
		3336	:base_core :base_mem :base_orig :base_math :base_loop
		3337	grepstart grepwhile mapstart mapwhile
		3338	sort time
		3339	));
873		3340
874	# here we export the classes and methods available to script code	3341	# here we export the classes and methods available to script code
875		3342
		3343	=pod
		3344
		3345	The following functions and methods are available within a safe environment:
		3346
		3347	cf::object
		3348	contr pay_amount pay_player map x y force_find force_add destroy
		3349	insert remove name archname title slaying race decrease split
		3350	value
		3351
		3352	cf::object::player
		3353	player
		3354
		3355	cf::player
		3356	peaceful
		3357
		3358	cf::map
		3359	trigger
		3360
		3361	=cut
		3362
876	for (	3363	for (
877	["cf::object" => qw(contr pay_amount pay_player)],	3364	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3365	insert remove inv nrof name archname title slaying race
		3366	decrease split destroy change_exp value msg lore send_msg)],
878	["cf::object::player" => qw(player)],	3367	["cf::object::player" => qw(player)],
879	["cf::player" => qw(peaceful)],	3368	["cf::player" => qw(peaceful send_msg)],
		3369	["cf::map" => qw(trigger)],
880	) {	3370	) {
881	no strict 'refs';
882	my ($pkg, @funs) = @$_;	3371	my ($pkg, @funs) = @$_;
883	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3372	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
884	for @funs;	3373	for @funs;
885	}	3374	}
886		3375
		3376	=over 4
		3377
		3378	=item @retval = safe_eval $code, [var => value, ...]
		3379
		3380	Compiled and executes the given perl code snippet. additional var/value
		3381	pairs result in temporary local (my) scalar variables of the given name
		3382	that are available in the code snippet. Example:
		3383
		3384	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3385
		3386	=cut
		3387
887	sub safe_eval($;@) {	3388	sub safe_eval($;@) {
888	my ($code, %vars) = @_;	3389	my ($code, %vars) = @_;
889		3390
890	my $qcode = $code;	3391	my $qcode = $code;
891	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3392	$qcode =~ s/"/‟/g; # not allowed in #line filenames
892	$qcode =~ s/\n/\\n/g;	3393	$qcode =~ s/\n/\\n/g;
893		3394
		3395	%vars = (_dummy => 0) unless %vars;
		3396
		3397	my @res;
894	local $_;	3398	local $_;
895	local @safe::cf::_safe_eval_args = values %vars;
896		3399
897	my $eval =	3400	my $eval =
898	"do {\n"	3401	"do {\n"
899	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3402	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
900	. "#line 0 \"{$qcode}\"\n"	3403	. "#line 0 \"{$qcode}\"\n"
901	. $code	3404	. $code
902	. "\n}"	3405	. "\n}"
903	;	3406	;
904		3407
		3408	if ($CFG{safe_eval}) {
905	sub_generation_inc;	3409	sub_generation_inc;
		3410	local @safe::cf::_safe_eval_args = values %vars;
906	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3411	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
907	sub_generation_inc;	3412	sub_generation_inc;
		3413	} else {
		3414	local @cf::_safe_eval_args = values %vars;
		3415	@res = wantarray ? eval eval : scalar eval $eval;
		3416	}
908		3417
909	if ($@) {	3418	if ($@) {
910	warn "$@";	3419	warn "$@",
911	warn "while executing safe code '$code'\n";	3420	"while executing safe code '$code'\n",
912	warn "with arguments " . (join " ", %vars) . "\n";	3421	"with arguments " . (join " ", %vars) . "\n";
913	}	3422	}
914		3423
915	wantarray ? @res : $res[0]	3424	wantarray ? @res : $res[0]
916	}	3425	}
		3426
		3427	=item cf::register_script_function $function => $cb
		3428
		3429	Register a function that can be called from within map/npc scripts. The
		3430	function should be reasonably secure and should be put into a package name
		3431	like the extension.
		3432
		3433	Example: register a function that gets called whenever a map script calls
		3434	C<rent::overview>, as used by the C<rent> extension.
		3435
		3436	cf::register_script_function "rent::overview" => sub {
		3437	...
		3438	};
		3439
		3440	=cut
917		3441
918	sub register_script_function {	3442	sub register_script_function {
919	my ($fun, $cb) = @_;	3443	my ($fun, $cb) = @_;
920		3444
921	no strict 'refs';	3445	$fun = "safe::$fun" if $CFG{safe_eval};
922	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3446	*$fun = $safe_hole->wrap ($cb);
923	}	3447	}
		3448
		3449	=back
		3450
		3451	=cut
924		3452
925	#############################################################################	3453	#############################################################################
926	# the server's main()	3454	# the server's init and main functions
		3455
		3456	sub load_facedata($) {
		3457	my ($path) = @_;
		3458
		3459	# HACK to clear player env face cache, we need some signal framework
		3460	# for this (global event?)
		3461	%ext::player_env::MUSIC_FACE_CACHE = ();
		3462
		3463	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3464
		3465	trace "loading facedata from $path\n";
		3466
		3467	my $facedata = decode_storable load_file $path;
		3468
		3469	$facedata->{version} == 2
		3470	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3471
		3472	# patch in the exptable
		3473	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3474	$facedata->{resource}{"res/exp_table"} = {
		3475	type => FT_RSRC,
		3476	data => $exp_table,
		3477	hash => (Digest::MD5::md5 $exp_table),
		3478	};
		3479	cf::cede_to_tick;
		3480
		3481	{
		3482	my $faces = $facedata->{faceinfo};
		3483
		3484	while (my ($face, $info) = each %$faces) {
		3485	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3486
		3487	cf::face::set_visibility $idx, $info->{visibility};
		3488	cf::face::set_magicmap $idx, $info->{magicmap};
		3489	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3490	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3491	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3492
		3493	cf::cede_to_tick;
		3494	}
		3495
		3496	while (my ($face, $info) = each %$faces) {
		3497	next unless $info->{smooth};
		3498
		3499	my $idx = cf::face::find $face
		3500	or next;
		3501
		3502	if (my $smooth = cf::face::find $info->{smooth}) {
		3503	cf::face::set_smooth $idx, $smooth;
		3504	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3505	} else {
		3506	error "smooth face '$info->{smooth}' not found for face '$face'";
		3507	}
		3508
		3509	cf::cede_to_tick;
		3510	}
		3511	}
		3512
		3513	{
		3514	my $anims = $facedata->{animinfo};
		3515
		3516	while (my ($anim, $info) = each %$anims) {
		3517	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3518	cf::cede_to_tick;
		3519	}
		3520
		3521	cf::anim::invalidate_all; # d'oh
		3522	}
		3523
		3524	{
		3525	my $res = $facedata->{resource};
		3526
		3527	while (my ($name, $info) = each %$res) {
		3528	if (defined $info->{type}) {
		3529	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3530
		3531	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3532	cf::face::set_type $idx, $info->{type};
		3533	} else {
		3534	$RESOURCE{$name} = $info; # unused
		3535	}
		3536
		3537	cf::cede_to_tick;
		3538	}
		3539	}
		3540
		3541	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3542
		3543	1
		3544	}
		3545
		3546	register_exticmd fx_want => sub {
		3547	my ($ns, $want) = @_;
		3548
		3549	while (my ($k, $v) = each %$want) {
		3550	$ns->fx_want ($k, $v);
		3551	}
		3552	};
		3553
		3554	sub load_resource_file($) {
		3555	my $guard = lock_acquire "load_resource_file";
		3556
		3557	my $status = load_resource_file_ $_[0];
		3558	get_slot 0.1, 100;
		3559	cf::arch::commit_load;
		3560
		3561	$status
		3562	}
		3563
		3564	sub reload_regions {
		3565	# HACK to clear player env face cache, we need some signal framework
		3566	# for this (global event?)
		3567	%ext::player_env::MUSIC_FACE_CACHE = ();
		3568
		3569	load_resource_file "$MAPDIR/regions"
		3570	or die "unable to load regions file\n";
		3571
		3572	for (cf::region::list) {
		3573	$_->{match} = qr/$_->{match}/
		3574	if exists $_->{match};
		3575	}
		3576	}
		3577
		3578	sub reload_facedata {
		3579	load_facedata "$DATADIR/facedata"
		3580	or die "unable to load facedata\n";
		3581	}
		3582
		3583	sub reload_archetypes {
		3584	load_resource_file "$DATADIR/archetypes"
		3585	or die "unable to load archetypes\n";
		3586	}
		3587
		3588	sub reload_treasures {
		3589	load_resource_file "$DATADIR/treasures"
		3590	or die "unable to load treasurelists\n";
		3591	}
		3592
		3593	sub reload_sound {
		3594	trace "loading sound config from $DATADIR/sound\n";
		3595
		3596	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3597
		3598	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3599	my $sound = $soundconf->{compat}[$_]
		3600	or next;
		3601
		3602	my $face = cf::face::find "sound/$sound->[1]";
		3603	cf::sound::set $sound->[0] => $face;
		3604	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3605	}
		3606
		3607	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3608	my $face = cf::face::find "sound/$v";
		3609	cf::sound::set $k => $face;
		3610	}
		3611	}
		3612
		3613	sub reload_resources {
		3614	trace "reloading resource files...\n";
		3615
		3616	reload_exp_table;
		3617	reload_materials;
		3618	reload_facedata;
		3619	reload_sound;
		3620	reload_archetypes;
		3621	reload_regions;
		3622	reload_treasures;
		3623
		3624	trace "finished reloading resource files\n";
		3625	}
		3626
		3627	sub reload_config {
		3628	trace "reloading config file...\n";
		3629
		3630	my $config = load_file "$CONFDIR/config";
		3631	utf8::decode $config;
		3632	*CFG = decode_yaml $config;
		3633
		3634	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3635
		3636	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3637	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3638
		3639	if (exists $CFG{mlockall}) {
		3640	eval {
		3641	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3642	and die "WARNING: m(un)lockall failed: $!\n";
		3643	};
		3644	warn $@ if $@;
		3645	}
		3646	}
		3647
		3648	sub pidfile() {
		3649	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3650	or die "$PIDFILE: $!";
		3651	flock $fh, &Fcntl::LOCK_EX
		3652	or die "$PIDFILE: flock: $!";
		3653	$fh
		3654	}
		3655
		3656	# make sure only one server instance is running at any one time
		3657	sub atomic {
		3658	my $fh = pidfile;
		3659
		3660	my $pid = <$fh>;
		3661	kill 9, $pid if $pid > 0;
		3662
		3663	seek $fh, 0, 0;
		3664	print $fh $$;
		3665	}
		3666
		3667	sub main_loop {
		3668	trace "EV::loop starting\n";
		3669	if (1) {
		3670	EV::loop;
		3671	}
		3672	trace "EV::loop returned\n";
		3673	goto &main_loop unless $REALLY_UNLOOP;
		3674	}
927		3675
928	sub main {	3676	sub main {
929	Event::loop;	3677	cf::init_globals; # initialise logging
		3678
		3679	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3680	LOG llevInfo, "Copyright (C) 2005-2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3681	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3682	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3683
		3684	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3685
		3686	# we must not ever block the main coroutine
		3687	local $Coro::idle = sub {
		3688	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3689	(async {
		3690	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3691	EV::loop EV::LOOP_ONESHOT;
		3692	})->prio (Coro::PRIO_MAX);
		3693	};
		3694
		3695	evthread_start IO::AIO::poll_fileno;
		3696
		3697	cf::sync_job {
		3698	cf::incloader::init ();
		3699
		3700	cf::init_anim;
		3701	cf::init_attackmess;
		3702	cf::init_dynamic;
		3703
		3704	cf::load_settings;
		3705
		3706	reload_resources;
		3707	reload_config;
		3708	db_init;
		3709
		3710	cf::init_uuid;
		3711	cf::init_signals;
		3712	cf::init_skills;
		3713
		3714	cf::init_beforeplay;
		3715
		3716	atomic;
		3717
		3718	load_extensions;
		3719
		3720	utime time, time, $RUNTIMEFILE;
		3721
		3722	# no (long-running) fork's whatsoever before this point(!)
		3723	use POSIX ();
		3724	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3725
		3726	cf::_post_init 0;
		3727	};
		3728
		3729	cf::object::thawer::errors_are_fatal 0;
		3730	info "parse errors in files are no longer fatal from this point on.\n";
		3731
		3732	my $free_main; $free_main = EV::idle sub {
		3733	undef $free_main;
		3734	undef &main; # free gobs of memory :)
		3735	};
		3736
		3737	goto &main_loop;
930	}	3738	}
931		3739
932	#############################################################################	3740	#############################################################################
933	# initialisation	3741	# initialisation and cleanup
934		3742
935	register "<global>", __PACKAGE__;	3743	# install some emergency cleanup handlers
		3744	BEGIN {
		3745	our %SIGWATCHER = ();
		3746	for my $signal (qw(INT HUP TERM)) {
		3747	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3748	cf::cleanup "SIG$signal";
		3749	};
		3750	}
		3751	}
936		3752
937	unshift @INC, $LIBDIR;	3753	sub write_runtime_sync {
		3754	my $t0 = AE::time;
938		3755
939	load_extensions;	3756	# first touch the runtime file to show we are still running:
		3757	# the fsync below can take a very very long time.
940		3758
941	$TICK_WATCHER = Event->timer (	3759	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
942	prio => 1,	3760
943	at => $NEXT_TICK || 1,	3761	my $guard = cf::lock_acquire "write_runtime";
944	cb => sub {	3762
		3763	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3764	or return;
		3765
		3766	my $value = $cf::RUNTIME + 90 + 10;
		3767	# 10 is the runtime save interval, for a monotonic clock
		3768	# 60 allows for the watchdog to kill the server.
		3769
		3770	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3771	and return;
		3772
		3773	# always fsync - this file is important
		3774	aio_fsync $fh
		3775	and return;
		3776
		3777	# touch it again to show we are up-to-date
		3778	aio_utime $fh, undef, undef;
		3779
		3780	close $fh
		3781	or return;
		3782
		3783	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3784	and return;
		3785
		3786	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3787
		3788	1
		3789	}
		3790
		3791	our $uuid_lock;
		3792	our $uuid_skip;
		3793
		3794	sub write_uuid_sync($) {
		3795	$uuid_skip ||= $_[0];
		3796
		3797	return if $uuid_lock;
		3798	local $uuid_lock = 1;
		3799
		3800	my $uuid = "$LOCALDIR/uuid";
		3801
		3802	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3803	or return;
		3804
		3805	my $value = uuid_seq uuid_cur;
		3806
		3807	unless ($value) {
		3808	info "cowardly refusing to write zero uuid value!\n";
		3809	return;
		3810	}
		3811
		3812	my $value = uuid_str $value + $uuid_skip;
		3813	$uuid_skip = 0;
		3814
		3815	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3816	and return;
		3817
		3818	# always fsync - this file is important
		3819	aio_fsync $fh
		3820	and return;
		3821
		3822	close $fh
		3823	or return;
		3824
		3825	aio_rename "$uuid~", $uuid
		3826	and return;
		3827
		3828	trace "uuid file written ($value).\n";
		3829
		3830	1
		3831
		3832	}
		3833
		3834	sub write_uuid($$) {
		3835	my ($skip, $sync) = @_;
		3836
		3837	$sync ? write_uuid_sync $skip
		3838	: async { write_uuid_sync $skip };
		3839	}
		3840
		3841	sub emergency_save() {
		3842	my $freeze_guard = cf::freeze_mainloop;
		3843
		3844	info "emergency_perl_save: enter\n";
		3845
		3846	# this is a trade-off: we want to be very quick here, so
		3847	# save all maps without fsync, and later call a global sync
		3848	# (which in turn might be very very slow)
		3849	local $USE_FSYNC = 0;
		3850
		3851	cf::sync_job {
		3852	cf::write_runtime_sync; # external watchdog should not bark
		3853
		3854	# use a peculiar iteration method to avoid tripping on perl
		3855	# refcount bugs in for. also avoids problems with players
		3856	# and maps saved/destroyed asynchronously.
		3857	info "emergency_perl_save: begin player save\n";
		3858	for my $login (keys %cf::PLAYER) {
		3859	my $pl = $cf::PLAYER{$login} or next;
		3860	$pl->valid or next;
		3861	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3862	$pl->save;
		3863	}
		3864	info "emergency_perl_save: end player save\n";
		3865
		3866	cf::write_runtime_sync; # external watchdog should not bark
		3867
		3868	info "emergency_perl_save: begin map save\n";
		3869	for my $path (keys %cf::MAP) {
		3870	my $map = $cf::MAP{$path} or next;
		3871	$map->valid or next;
		3872	$map->save;
		3873	}
		3874	info "emergency_perl_save: end map save\n";
		3875
		3876	cf::write_runtime_sync; # external watchdog should not bark
		3877
		3878	info "emergency_perl_save: begin database checkpoint\n";
		3879	BDB::db_env_txn_checkpoint $DB_ENV;
		3880	info "emergency_perl_save: end database checkpoint\n";
		3881
		3882	info "emergency_perl_save: begin write uuid\n";
		3883	write_uuid_sync 1;
		3884	info "emergency_perl_save: end write uuid\n";
		3885
		3886	cf::write_runtime_sync; # external watchdog should not bark
		3887
		3888	trace "emergency_perl_save: syncing database to disk";
		3889	BDB::db_env_txn_checkpoint $DB_ENV;
		3890
		3891	info "emergency_perl_save: starting sync\n";
		3892	IO::AIO::aio_sync sub {
		3893	info "emergency_perl_save: finished sync\n";
		3894	};
		3895
		3896	cf::write_runtime_sync; # external watchdog should not bark
		3897
		3898	trace "emergency_perl_save: flushing outstanding aio requests";
		3899	while (IO::AIO::nreqs || BDB::nreqs) {
		3900	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3901	}
		3902
		3903	cf::write_runtime_sync; # external watchdog should not bark
		3904	};
		3905
		3906	info "emergency_perl_save: leave\n";
		3907	}
		3908
		3909	sub post_cleanup {
		3910	my ($make_core) = @_;
		3911
		3912	IO::AIO::flush;
		3913
		3914	error Carp::longmess "post_cleanup backtrace"
		3915	if $make_core;
		3916
		3917	my $fh = pidfile;
		3918	unlink $PIDFILE if <$fh> == $$;
		3919	}
		3920
		3921	# a safer delete_package, copied from Symbol
		3922	sub clear_package($) {
		3923	my $pkg = shift;
		3924
		3925	# expand to full symbol table name if needed
		3926	unless ($pkg =~ /^main::.*::$/) {
		3927	$pkg = "main$pkg" if $pkg =~ /^::/;
		3928	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3929	$pkg .= '::' unless $pkg =~ /::$/;
		3930	}
		3931
		3932	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3933	my $stem_symtab = *{$stem}{HASH};
		3934
		3935	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3936	or return;
		3937
		3938	# clear all symbols
		3939	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3940	for my $name (keys %$leaf_symtab) {
		3941	_gv_clear *{"$pkg$name"};
		3942	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3943	}
		3944	}
		3945
		3946	sub do_reload_perl() {
		3947	# can/must only be called in main
		3948	unless (in_main) {
		3949	error "can only reload from main coroutine";
		3950	return;
		3951	}
		3952
		3953	return if $RELOAD++;
		3954
		3955	my $t1 = AE::time;
		3956
		3957	while ($RELOAD) {
		3958	cf::get_slot 0.1, -1, "reload_perl";
		3959	info "perl_reload: reloading...";
		3960
		3961	trace "perl_reload: entering sync_job";
		3962
		3963	cf::sync_job {
		3964	#cf::emergency_save;
		3965
		3966	trace "perl_reload: cancelling all extension coros";
		3967	$_->cancel for values %EXT_CORO;
		3968	%EXT_CORO = ();
		3969
		3970	trace "perl_reload: removing commands";
		3971	%COMMAND = ();
		3972
		3973	trace "perl_reload: removing ext/exti commands";
		3974	%EXTCMD = ();
		3975	%EXTICMD = ();
		3976
		3977	trace "perl_reload: unloading/nuking all extensions";
		3978	for my $pkg (@EXTS) {
		3979	trace "... unloading $pkg";
		3980
		3981	if (my $cb = $pkg->can ("unload")) {
		3982	eval {
		3983	$cb->($pkg);
		3984	1
		3985	} or error "$pkg unloaded, but with errors: $@";
		3986	}
		3987
		3988	trace "... clearing $pkg";
		3989	clear_package $pkg;
		3990	}
		3991
		3992	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3993	while (my ($k, $v) = each %INC) {
		3994	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3995
		3996	trace "... unloading $k";
		3997	delete $INC{$k};
		3998
		3999	$k =~ s/\.pm$//;
		4000	$k =~ s/\//::/g;
		4001
		4002	if (my $cb = $k->can ("unload_module")) {
		4003	$cb->();
		4004	}
		4005
		4006	clear_package $k;
		4007	}
		4008
		4009	trace "perl_reload: getting rid of safe::, as good as possible";
		4010	clear_package "safe::$_"
		4011	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4012
		4013	trace "perl_reload: unloading cf.pm \"a bit\"";
		4014	delete $INC{"cf.pm"};
		4015	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4016
		4017	# don't, removes xs symbols, too,
		4018	# and global variables created in xs
		4019	#clear_package __PACKAGE__;
		4020
		4021	info "perl_reload: unload completed, starting to reload now";
		4022
		4023	trace "perl_reload: reloading cf.pm";
		4024	require cf;
		4025	cf::_connect_to_perl_1;
		4026
		4027	trace "perl_reload: loading config and database again";
		4028	cf::reload_config;
		4029
		4030	trace "perl_reload: loading extensions";
		4031	cf::load_extensions;
		4032
		4033	if ($REATTACH_ON_RELOAD) {
		4034	trace "perl_reload: reattaching attachments to objects/players";
		4035	_global_reattach; # objects, sockets
		4036	trace "perl_reload: reattaching attachments to maps";
		4037	reattach $_ for values %MAP;
		4038	trace "perl_reload: reattaching attachments to players";
		4039	reattach $_ for values %PLAYER;
		4040	}
		4041
		4042	cf::_post_init 1;
		4043
		4044	trace "perl_reload: leaving sync_job";
		4045
		4046	1
		4047	} or do {
		4048	error $@;
		4049	cf::cleanup "perl_reload: error, exiting.";
		4050	};
		4051
		4052	--$RELOAD;
		4053	}
		4054
		4055	$t1 = AE::time - $t1;
		4056	info "perl_reload: completed in ${t1}s\n";
		4057	};
		4058
		4059	our $RELOAD_WATCHER; # used only during reload
		4060
		4061	sub reload_perl() {
		4062	# doing reload synchronously and two reloads happen back-to-back,
		4063	# coro crashes during coro_state_free->destroy here.
		4064
		4065	$RELOAD_WATCHER ||= cf::async {
		4066	Coro::AIO::aio_wait cache_extensions;
		4067
		4068	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4069	do_reload_perl;
		4070	undef $RELOAD_WATCHER;
		4071	};
		4072	};
		4073	}
		4074
		4075	register_command "reload" => sub {
		4076	my ($who, $arg) = @_;
		4077
		4078	if ($who->flag (FLAG_WIZ)) {
		4079	$who->message ("reloading server.");
		4080	async {
		4081	$Coro::current->{desc} = "perl_reload";
		4082	reload_perl;
		4083	};
		4084	}
		4085	};
		4086
		4087	#############################################################################
		4088
		4089	my $bug_warning = 0;
		4090
		4091	our @WAIT_FOR_TICK;
		4092	our @WAIT_FOR_TICK_BEGIN;
		4093
		4094	sub wait_for_tick() {
		4095	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4096
		4097	my $signal = new Coro::Signal;
		4098	push @WAIT_FOR_TICK, $signal;
		4099	$signal->wait;
		4100	}
		4101
		4102	sub wait_for_tick_begin() {
		4103	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4104
		4105	my $signal = new Coro::Signal;
		4106	push @WAIT_FOR_TICK_BEGIN, $signal;
		4107	$signal->wait;
		4108	}
		4109
		4110	sub tick {
		4111	if ($Coro::current != $Coro::main) {
		4112	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4113	unless ++$bug_warning > 10;
		4114	return;
		4115	}
		4116
945	cf::server_tick; # one server iteration	4117	cf::server_tick; # one server iteration
946		4118
947	my $NOW = Event::time;	4119	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
948	$NEXT_TICK += $TICK;
949		4120
950	# if we are delayed by four ticks, skip them all	4121	if ($NOW >= $NEXT_RUNTIME_WRITE) {
951	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	4122	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
952		4123	Coro::async_pool {
953	$TICK_WATCHER->at ($NEXT_TICK);	4124	$Coro::current->{desc} = "runtime saver";
954	$TICK_WATCHER->start;	4125	write_runtime_sync
		4126	or error "ERROR: unable to write runtime file: $!";
		4127	};
955	},	4128	}
956	);
957		4129
958	_reload_2;	4130	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4131	$sig->send;
		4132	}
		4133	while (my $sig = shift @WAIT_FOR_TICK) {
		4134	$sig->send;
		4135	}
		4136
		4137	$LOAD = ($NOW - $TICK_START) / $TICK;
		4138	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4139
		4140	if (0) {
		4141	if ($NEXT_TICK) {
		4142	my $jitter = $TICK_START - $NEXT_TICK;
		4143	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4144	debug "jitter $JITTER\n";#d#
		4145	}
		4146	}
		4147	}
		4148
		4149	{
		4150	# configure BDB
		4151
		4152	BDB::min_parallel 16;
		4153	BDB::max_poll_reqs $TICK * 0.1;
		4154	$AnyEvent::BDB::WATCHER->priority (1);
		4155
		4156	unless ($DB_ENV) {
		4157	$DB_ENV = BDB::db_env_create;
		4158	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4159	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4160	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4161	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4162	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4163
		4164	cf::sync_job {
		4165	eval {
		4166	BDB::db_env_open
		4167	$DB_ENV,
		4168	$BDBDIR,
		4169	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4170	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4171	0666;
		4172
		4173	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		4174	};
		4175
		4176	cf::cleanup "db_env_open(db): $@" if $@;
		4177	};
		4178	}
		4179
		4180	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		4181	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		4182	};
		4183	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		4184	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		4185	};
		4186	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4187	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4188	};
		4189	}
		4190
		4191	{
		4192	# configure IO::AIO
		4193
		4194	IO::AIO::min_parallel 8;
		4195	IO::AIO::max_poll_time $TICK * 0.1;
		4196	undef $AnyEvent::AIO::WATCHER;
		4197	}
		4198
		4199	our $_log_backtrace;
		4200	our $_log_backtrace_last;
		4201
		4202	sub _log_backtrace {
		4203	my ($msg, @addr) = @_;
		4204
		4205	$msg =~ s/\n$//;
		4206
		4207	if ($_log_backtrace_last eq $msg) {
		4208	LOG llevInfo, "[ABT] $msg\n";
		4209	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4210	# limit the # of concurrent backtraces
		4211	} elsif ($_log_backtrace < 2) {
		4212	$_log_backtrace_last = $msg;
		4213	++$_log_backtrace;
		4214	my $perl_bt = Carp::longmess $msg;
		4215	async {
		4216	$Coro::current->{desc} = "abt $msg";
		4217
		4218	my @bt = fork_call {
		4219	@addr = map { sprintf "%x", $_ } @addr;
		4220	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4221	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4222	or die "addr2line: $!";
		4223
		4224	my @funcs;
		4225	my @res = <$fh>;
		4226	chomp for @res;
		4227	while (@res) {
		4228	my ($func, $line) = splice @res, 0, 2, ();
		4229	push @funcs, "[$func] $line";
		4230	}
		4231
		4232	@funcs
		4233	};
		4234
		4235	LOG llevInfo, "[ABT] $perl_bt\n";
		4236	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4237	LOG llevInfo, "[ABT] $_\n" for @bt;
		4238	--$_log_backtrace;
		4239	};
		4240	} else {
		4241	LOG llevInfo, "[ABT] $msg\n";
		4242	LOG llevInfo, "[ABT] [overload, suppressed]\n";
		4243	}
		4244	}
		4245
		4246	# load additional modules
		4247	require "cf/$_.pm" for @EXTRA_MODULES;
		4248	cf::_connect_to_perl_2;
		4249
		4250	END { cf::emergency_save }
959		4251
960	1	4252	1
961		4253

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