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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.72 by root, Sun Oct 1 11:41:37 2006 UTC vs.
Revision 1.566 by root, Sun May 1 16:58:16 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;
10	use YAML::Syck ();	57	use YAML::XS ();
		58	use IO::AIO ();
11	use Time::HiRes;	59	use Time::HiRes;
12	use Event;	60	use Compress::LZF;
13	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
14		62
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	63	AnyEvent::detect;
16	$YAML::Syck::ImplicitUnicode = 1;
17		64
18	use strict;	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
19		69
20	_init_vars;	70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
21		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
22	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
23	our @EVENT;	93	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
25		96
26	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
27	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
28	our $NEXT_TICK;	123	our $NEXT_TICK;
		124	our $USE_FSYNC = 1; # use fsync to write maps - default on
		125
		126	our $BDB_DEADLOCK_WATCHER;
		127	our $BDB_CHECKPOINT_WATCHER;
		128	our $BDB_TRICKLE_WATCHER;
		129	our $DB_ENV;
		130
		131	our @EXTRA_MODULES = qw(pod match mapscript incloader);
29		132
30	our %CFG;	133	our %CFG;
31		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
32	#############################################################################	179	#############################################################################
33		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
34	=head2 GLOBAL VARIABLES	192	=head2 GLOBAL VARIABLES
35		193
36	=over 4	194	=over 4
37		195
38	=item $cf::LIBDIR	196	=item $cf::UPTIME
39		197
40	The perl library directory, where extensions and cf-specific modules can	198	The timestamp of the server start (so not actually an uptime).
41	be found. It will be added to C<@INC> automatically.	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.
42		217
43	=item $cf::TICK	218	=item $cf::TICK
44		219
45	The interval between server ticks, in seconds.	220	The interval between server ticks, in seconds.
46		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
47	=item %cf::CFG	232	=item %cf::CFG
48		233
49	Configuration for the server, loaded from C</etc/crossfire/config>, or	234	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
50	from wherever your confdir points to.	235	from wherever your confdir points to.
51		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
52	=back	260	=back
53		261
54	=cut	262	=cut
55		263
56	BEGIN {	264	sub error(@) { LOG llevError, join "", @_ }
57	*CORE::GLOBAL::warn = sub {	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 {
58	my $msg = join "", @_;	271	my $msg = join "", @_;
		272
59	$msg .= "\n"	273	$msg .= "\n"
60	unless $msg =~ /\n$/;	274	unless $msg =~ /\n$/;
61		275
62	print STDERR "cfperl: $msg";	276	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
63	LOG llevError, "cfperl: $msg";
64	};
65	}
66		277
		278	LOG llevWarn, $msg;
		279	};
		280
		281	$Coro::State::DIEHOOK = sub {
		282	return unless $^S eq 0; # "eq", not "=="
		283
		284	error Carp::longmess $_[0];
		285
		286	if (in_main) {#d#
		287	error "DIEHOOK called in main context, Coro bug?\n";#d#
		288	return;#d#
		289	}#d#
		290
		291	# kill coroutine otherwise
		292	Coro::terminate
		293	};
		294
		295	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		296	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		297	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		298	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		299	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		300	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
67	@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)
68		302
69	# 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
70	# within the Safe compartment.	304	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	305	for my $pkg (qw(
72	no strict 'refs';	306	cf::global cf::attachable
		307	cf::object cf::object::player
		308	cf::client cf::player
		309	cf::arch cf::living
		310	cf::map cf::mapspace
		311	cf::party cf::region
		312	)) {
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	313	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	314	}
75		315
76	$Event::DIED = sub {	316	$EV::DIED = sub {
77	warn "error in event callback: @_";	317	Carp::cluck "error in event callback: @_";
78	};	318	};
79		319
80	my %ext_pkg;	320	#############################################################################
81	my @exts;	321
82	my @hook;	322	sub fork_call(&@);
83	my %command;	323	sub get_slot($;$$);
84	my %extcmd;	324
		325	#############################################################################
85		326
86	=head2 UTILITY FUNCTIONS	327	=head2 UTILITY FUNCTIONS
87		328
88	=over 4	329	=over 4
89		330
90	=cut	331	=item dumpval $ref
91		332
92	use JSON::Syck (); # TODO# replace by JSON::PC once working	333	=cut
93		334
		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	}
		353
		354	=item $scalar = load_file $path
		355
		356	Loads the given file from path and returns its contents. Croaks on error
		357	and can block.
		358
		359	=cut
		360
		361	sub load_file($) {
		362	0 <= aio_load $_[0], my $data
		363	or Carp::croak "$_[0]: $!";
		364
		365	$data
		366	}
		367
94	=item $ref = cf::from_json $json	368	=item $ref = cf::decode_json $json
95		369
96	Converts a JSON string into the corresponding perl data structure.	370	Converts a JSON string into the corresponding perl data structure.
97		371
98	=cut
99
100	sub from_json($) {
101	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
102	JSON::Syck::Load $_[0]
103	}
104
105	=item $json = cf::to_json $ref	372	=item $json = cf::encode_json $ref
106		373
107	Converts a perl data structure into its JSON representation.	374	Converts a perl data structure into its JSON representation.
108		375
109	=cut	376	=cut
110		377
111	sub to_json($) {	378	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	379
113	JSON::Syck::Dump $_[0]	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 });
114	}	864	}
115		865
116	=back	866	=back
117		867
118	=cut	868	=cut
119		869
120	#############################################################################	870	#############################################################################
121		871
122	=head2 EVENTS AND OBJECT ATTACHMENTS	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).
123		881
124	=over 4	882	=over 4
125		883
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	884	=item $attachable->attach ($attachment, key => $value...)
139		885
140	=item $map->detach ($attachment)	886	=item $attachable->detach ($attachment)
141		887
142	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.
143		890
144	=item $bool = $object->attached ($name)	891	Example, attach a minesweeper attachment to the given object, making it a
		892	10x10 minesweeper game:
145		893
146	=item $bool = $player->attached ($name)	894	$obj->attach (minesweeper => width => 10, height => 10);
147		895
148	=item $bool = $map->attached ($name)	896	=item $bool = $attachable->attached ($name)
149		897
150	Checks wether the named attachment is currently attached to the object.	898	Checks wether the named attachment is currently attached to the object.
151		899
152	=item cf::attach_global ...	900	=item cf::CLASS->attach ...
153		901
154	Attach handlers for global events.	902	=item cf::CLASS->detach ...
155		903
156	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
157	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:
158		938
159	=over 4	939	=over 4
160		940
161	=item prio => $number	941	=item prio => $number
162		942
…		…
164	by another C<prio> setting). Lower priority handlers get executed	944	by another C<prio> setting). Lower priority handlers get executed
165	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
166	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
167	unless you know what you are doing.	947	unless you know what you are doing.
168		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
169	=item on_I<event> => \&cb	955	=item on_I<event> => \&cb
170		956
171	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
172	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
173	handlers are recognised generally depends on the type of object these	959	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	968	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	969	object/class are recognised.
184		970
185	=back	971	=back
186		972
187	=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:
188		975
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	976	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	977	on_skill_attack => sub {
191	type.	978	my ($self, $victim) = @_;
192		979	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	980	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	981	}
414	}
415		982
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	983	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		984
442	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
443	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
444	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
445	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
446	exception.	989	exception.
447		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
448	=back	1181	=back
449		1182
450	=cut	1183	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		1184
456	#############################################################################	1185	#############################################################################
457	# object support	1186	# object support
458		1187
459	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 {
460	my ($obj, $data) = @_;	1222	my ($ob1, $ob2) = @_;
461		1223
462	$data = from_json $data;	1224	++$SLOW_MERGES;#d#
463		1225
464	for (@$data) {	1226	# we do the slow way here
465	my ($name, $args) = @$_;	1227	return _object_equal $ob1, $ob2
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}	1228	}
470		1229
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	1230	sub reattach {
		1231	# basically do the same as instantiate, without calling instantiate
473	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
474	my $registry = $obj->registry;	1237	my $registry = $obj->registry;
475		1238
476	@$registry = ();	1239	@$registry = ();
477		1240
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1241	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		1242
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	1243	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	1244	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	1245	for (@$attach) {
483	my ($klass, @attach) = @$_;	1246	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	1247	_attach $registry, $klass, @attach;
485	}	1248	}
486	} else {	1249	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	1250	info "object uses attachment '$name' that is not available, postponing.\n";
488	}
489	}
490	}
491
492	sub object_freezer_save {
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}	1251	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}	1252	}
521	}	1253	}
522		1254
523	sub object_thawer_load {	1255	cf::attachable->attach (
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	1256	prio => -1000000,
		1257	on_instantiate => sub {
		1258	my ($obj, $data) = @_;
		1259
		1260	$data = decode_json $data;
		1261
		1262	for (@$data) {
		1263	my ($name, $args) = @$_;
		1264
		1265	$obj->attach ($name, %{$args || {} });
		1266	}
		1267	},
		1268	on_reattach => \&reattach,
544	on_clone => sub {	1269	on_clone => sub {
545	my ($src, $dst) = @_;	1270	my ($src, $dst) = @_;
546		1271
547	@{$dst->registry} = @{$src->registry};	1272	@{$dst->registry} = @{$src->registry};
548		1273
549	%$dst = %$src;	1274	%$dst = %$src;
550		1275
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	1276	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	1277	if exists $src->{_attachment};
553	},	1278	},
554	;	1279	);
		1280
		1281	sub object_freezer_save {
		1282	my ($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
555		1367
556	#############################################################################	1368	#############################################################################
557	# old plug-in events	1369	# command handling &c
558		1370
559	sub inject_event {	1371	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		1372
563	my $cb = $hook[$event_code]{$extension}	1373	Register a callback for execution when the client sends the user command
564	or return;	1374	$name.
565		1375
566	&$cb	1376	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		1377
588	sub register_command {	1378	sub register_command {
589	my ($name, $time, $cb) = @_;	1379	my ($name, $cb) = @_;
590		1380
591	my $caller = caller;	1381	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	1382	#warn "registering command '$name/$time' to '$caller'";
593		1383
594	push @{ $command{$name} }, [$time, $cb, $caller];	1384	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	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
597		1410
598	sub register_extcmd {	1411	sub register_extcmd {
599	my ($name, $cb) = @_;	1412	my ($name, $cb) = @_;
600		1413
601	my $caller = caller;	1414	$EXTCMD{$name} = $cb;
602	#warn "registering extcmd '$name' to '$caller'";
603
604	$extcmd{$name} = [$cb, $caller];
605	}	1415	}
606		1416
607	sub register {	1417	sub register_exticmd {
608	my ($base, $pkg) = @_;	1418	my ($name, $cb) = @_;
609		1419
610	#TODO	1420	$EXTICMD{$name} = $cb;
611	}	1421	}
612		1422
613	sub load_extension {	1423	use File::Glob ();
614	my ($path) = @_;
615		1424
616	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1425	cf::player->attach (
617	my $base = $1;	1426	on_unknown_command => sub {
618	my $pkg = $1;	1427	my ($pl, $name, $params) = @_;
619	$pkg =~ s/[^[:word:]]/_/g;
620	$pkg = "ext::$pkg";
621		1428
622	warn "loading '$path' into '$pkg'\n";	1429	my $cb = $COMMAND{$name}
		1430	or return;
623		1431
624	open my $fh, "<:utf8", $path	1432	for my $cmd (@$cb) {
625	or die "$path: $!";	1433	$cmd->[1]->($pl->ob, $params);
626
627	my $source =
628	"package $pkg; use strict; use utf8;\n"
629	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })
631	. "\n};\n1";
632
633	eval $source
634	or die "$path: $@";
635
636	push @exts, $pkg;
637	$ext_pkg{$base} = $pkg;
638
639	# no strict 'refs';
640	# @{"$pkg\::ISA"} = ext::;
641
642	register $base, $pkg;
643	}
644
645	sub unload_extension {
646	my ($pkg) = @_;
647
648	warn "removing extension $pkg\n";
649
650	# remove hooks
651	#TODO
652	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};
654	# }
655
656	# remove commands
657	for my $name (keys %command) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
659
660	if (@cb) {
661	$command{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};
666	}	1434	}
		1435
		1436	cf::override;
667	}	1437	},
668
669	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
671	delete $extcmd{$name};
672	}
673
674	if (my $cb = $pkg->can ("unload")) {
675	eval {
676	$cb->($pkg);
677	1
678	} or warn "$pkg unloaded, but with errors: $@";
679	}
680
681	Symbol::delete_package $pkg;
682	}
683
684	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;
689	eval {
690	load_extension $ext;
691	1
692	} or warn "$ext not loaded: $@";
693	}
694	}
695
696	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699
700	attach_to_players
701	on_extcmd => sub {	1438	on_extcmd => sub {
702	my ($pl, $buf) = @_;	1439	my ($pl, $buf) = @_;
703		1440
704	my $msg = eval { from_json $buf };	1441	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
705		1442
706	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
707	if (my $cb = $extcmd{$msg->{msgtype}}) {	1451	if (my $cb = $EXTCMD{$type}) {
708	if (my %reply = $cb->[0]->($pl, $msg)) {	1452	@reply = $cb->($pl, @payload);
709	$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;
710	}	1550	}
711	}	1551	}
712	} else {	1552
713	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;
714	}	1562	}
715		1563	}
716	cf::override;
717	},	1564	};
718	;	1565	}
719		1566
720	#############################################################################	1567	#############################################################################
721	# load/save/clean perl data associated with a map
722		1568
723	*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($) {
724	my ($map) = @_;	1623	my ($login) = @_;
725		1624
726	my $path = $map->tmpname;	1625	$cf::PLAYER{$login}
727	defined $path or return;	1626	or !aio_stat path $login
728
729	unlink "$path.pst";
730	};
731
732	attach_to_maps prio => -10000, package => cf::mapsupport::;
733
734	#############################################################################
735	# load/save perl data associated with player->ob objects
736
737	sub all_objects(@) {
738	@_, map all_objects ($_->inv), @_
739	}	1627	}
740		1628
741	# TODO: compatibility cruft, remove when no longer needed	1629	sub find($) {
742	attach_to_players	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 (
743	on_load => sub {	1657	on_load => sub {
744	my ($pl, $path) = @_;	1658	my ($pl, $path) = @_;
745		1659
746	for my $o (all_objects $pl->ob) {	1660	# restore slots saved in save, below
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1661	my $slots = delete $pl->{_slots};
748	$o->set_ob_key_value ("_perl_data");
749		1662
750	%$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/$_";
		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	# used to laod the header of an original map
		2090	sub load_header_orig {
		2091	my ($self) = @_;
		2092
		2093	$self->load_header_from ($self->load_path)
		2094	}
		2095
		2096	# used to laod the header of an instantiated map
		2097	sub load_header_temp {
		2098	my ($self) = @_;
		2099
		2100	$self->load_header_from ($self->save_path)
		2101	}
		2102
		2103	# called after loading the header from an instantiated map
		2104	sub prepare_temp {
		2105	my ($self) = @_;
		2106
		2107	$self->last_access ((delete $self->{last_access})
		2108	|| $cf::RUNTIME); #d#
		2109	# safety
		2110	$self->{instantiate_time} = $cf::RUNTIME
		2111	if $self->{instantiate_time} > $cf::RUNTIME;
		2112	}
		2113
		2114	# called after loading the header from an original map
		2115	sub prepare_orig {
		2116	my ($self) = @_;
		2117
		2118	$self->{load_original} = 1;
		2119	$self->{instantiate_time} = $cf::RUNTIME;
		2120	$self->last_access ($cf::RUNTIME);
		2121	$self->instantiate;
		2122	}
		2123
		2124	sub load_header {
		2125	my ($self) = @_;
		2126
		2127	if ($self->load_header_temp) {
		2128	$self->prepare_temp;
		2129	} else {
		2130	$self->load_header_orig
		2131	or return;
		2132	$self->prepare_orig;
		2133	}
		2134
		2135	$self->{deny_reset} = 1
		2136	if $self->no_reset;
		2137
		2138	$self->default_region (cf::region::find_by_path $self->{path})
		2139	unless $self->default_region;
		2140
		2141	1
		2142	}
		2143
		2144	sub find;
		2145	sub find {
		2146	my ($path, $origin) = @_;
		2147
		2148	cf::cede_to_tick;
		2149
		2150	$path = normalise $path, $origin;
		2151
		2152	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2153	my $guard2 = cf::lock_acquire "map_find:$path";
		2154
		2155	$cf::MAP{$path} || do {
		2156	my $map = new_from_path cf::map $path
		2157	or return;
		2158
		2159	$map->{last_save} = $cf::RUNTIME;
		2160
		2161	$map->load_header
		2162	or return;
		2163
		2164	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2165	# doing this can freeze the server in a sync job, obviously
		2166	#$cf::WAIT_FOR_TICK->wait;
		2167	undef $guard2;
		2168	undef $guard1;
		2169	$map->reset;
		2170	return find $path;
		2171	}
		2172
		2173	$cf::MAP{$path} = $map
		2174	}
		2175	}
		2176
		2177	sub pre_load { }
		2178	#sub post_load { } # XS
		2179
		2180	sub load {
		2181	my ($self) = @_;
		2182
		2183	local $self->{deny_reset} = 1; # loading can take a long time
		2184
		2185	my $path = $self->{path};
		2186
		2187	{
		2188	my $guard = cf::lock_acquire "map_data:$path";
		2189
		2190	return unless $self->valid;
		2191	return unless $self->in_memory == cf::MAP_SWAPPED;
		2192
		2193	$self->in_memory (cf::MAP_LOADING);
		2194
		2195	$self->alloc;
		2196
		2197	$self->pre_load;
		2198	cf::cede_to_tick;
		2199
		2200	if (exists $self->{load_path}) {
		2201	my $f = new_from_file cf::object::thawer $self->{load_path};
		2202	$f->skip_block;
		2203	$self->_load_objects ($f)
		2204	or return;
		2205
		2206	$self->post_load_original
		2207	if delete $self->{load_original};
		2208
		2209	if (my $uniq = $self->uniq_path) {
		2210	utf8::encode $uniq;
		2211	unless (aio_stat $uniq) {
		2212	if (my $f = new_from_file cf::object::thawer $uniq) {
		2213	$self->clear_unique_items;
		2214	$self->_load_objects ($f);
		2215	$f->resolve_delayed_derefs;
		2216	}
		2217	}
751	}	2218	}
		2219
		2220	$f->resolve_delayed_derefs;
		2221	} else {
		2222	$self->post_load_original
		2223	if delete $self->{load_original};
752	}	2224	}
		2225
		2226	cf::cede_to_tick;
		2227	# now do the right thing for maps
		2228	$self->link_multipart_objects;
		2229	$self->difficulty ($self->estimate_difficulty)
		2230	unless $self->difficulty;
		2231	cf::cede_to_tick;
		2232
		2233	unless ($self->{deny_activate}) {
		2234	$self->decay_objects;
		2235	$self->fix_auto_apply;
		2236	$self->update_buttons;
		2237	cf::cede_to_tick;
		2238	$self->activate;
		2239	}
		2240
		2241	$self->{last_save} = $cf::RUNTIME;
		2242	$self->last_access ($cf::RUNTIME);
		2243
		2244	$self->in_memory (cf::MAP_ACTIVE);
753	},	2245	}
754	;
755		2246
756	#############################################################################	2247	$self->post_load;
757		2248
758	=head2 CORE EXTENSIONS	2249	1
		2250	}
759		2251
760	Functions and methods that extend core crossfire objects.	2252	# customize the map for a given player, i.e.
		2253	# return the _real_ map. used by e.g. per-player
		2254	# maps to change the path to ~playername/mappath
		2255	sub customise_for {
		2256	my ($self, $ob) = @_;
		2257
		2258	return find "~" . $ob->name . "/" . $self->{path}
		2259	if $self->per_player;
		2260
		2261	# return find "?party/" . $ob->name . "/" . $self->{path}
		2262	# if $self->per_party;
		2263
		2264	$self
		2265	}
		2266
		2267	# find and load all maps in the 3x3 area around a map
		2268	sub load_neighbours {
		2269	my ($map) = @_;
		2270
		2271	my @neigh; # diagonal neighbours
		2272
		2273	for (0 .. 3) {
		2274	my $neigh = $map->tile_path ($_)
		2275	or next;
		2276	$neigh = find $neigh, $map
		2277	or next;
		2278	$neigh->load;
		2279
		2280	# now find the diagonal neighbours
		2281	push @neigh,
		2282	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2283	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2284	}
		2285
		2286	for (grep defined $_->[0], @neigh) {
		2287	my ($path, $origin) = @$_;
		2288	my $neigh = find $path, $origin
		2289	or next;
		2290	$neigh->load;
		2291	}
		2292	}
		2293
		2294	sub find_sync {
		2295	my ($path, $origin) = @_;
		2296
		2297	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2298	if $Coro::current == $Coro::main;
		2299
		2300	find $path, $origin
		2301	}
		2302
		2303	sub do_load_sync {
		2304	my ($map) = @_;
		2305
		2306	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2307	if $Coro::current == $Coro::main;
		2308
		2309	$map->load;
		2310	}
		2311
		2312	our %MAP_PREFETCH;
		2313	our $MAP_PREFETCHER = undef;
		2314
		2315	sub find_async {
		2316	my ($path, $origin, $load) = @_;
		2317
		2318	$path = normalise $path, $origin;
		2319
		2320	if (my $map = $cf::MAP{$path}) {
		2321	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2322	}
		2323
		2324	$MAP_PREFETCH{$path} |= $load;
		2325
		2326	$MAP_PREFETCHER ||= cf::async {
		2327	$Coro::current->{desc} = "map prefetcher";
		2328
		2329	while (%MAP_PREFETCH) {
		2330	while (my ($k, $v) = each %MAP_PREFETCH) {
		2331	if (my $map = find $k) {
		2332	$map->load if $v;
		2333	}
		2334
		2335	delete $MAP_PREFETCH{$k};
		2336	}
		2337	}
		2338	undef $MAP_PREFETCHER;
		2339	};
		2340	$MAP_PREFETCHER->prio (6);
		2341
		2342	()
		2343	}
		2344
		2345	# common code, used by both ->save and ->swapout
		2346	sub _save {
		2347	my ($self) = @_;
		2348
		2349	$self->{last_save} = $cf::RUNTIME;
		2350
		2351	return unless $self->dirty;
		2352
		2353	my $save = $self->save_path; utf8::encode $save;
		2354	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2355
		2356	$self->{load_path} = $save;
		2357
		2358	return if $self->{deny_save};
		2359
		2360	local $self->{last_access} = $self->last_access;#d#
		2361
		2362	cf::async {
		2363	$Coro::current->{desc} = "map player save";
		2364	$_->contr->save for $self->players;
		2365	};
		2366
		2367	cf::get_slot 0.02;
		2368
		2369	if ($uniq) {
		2370	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2371	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2372	} else {
		2373	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2374	}
		2375	}
		2376
		2377	sub save {
		2378	my ($self) = @_;
		2379
		2380	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2381
		2382	$self->_save;
		2383	}
		2384
		2385	sub swap_out {
		2386	my ($self) = @_;
		2387
		2388	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2389
		2390	return if $self->in_memory != cf::MAP_ACTIVE;
		2391	return if $self->{deny_save};
		2392	return if $self->players;
		2393
		2394	# first deactivate the map and "unlink" it from the core
		2395	$self->deactivate;
		2396	$_->clear_links_to ($self) for values %cf::MAP;
		2397	$self->in_memory (cf::MAP_SWAPPED);
		2398
		2399	# then atomically save
		2400	$self->_save;
		2401
		2402	# then free the map
		2403	$self->clear;
		2404	}
		2405
		2406	sub reset_at {
		2407	my ($self) = @_;
		2408
		2409	# TODO: safety, remove and allow resettable per-player maps
		2410	return 1e99 if $self->{deny_reset};
		2411
		2412	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2413	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2414
		2415	$time + $to
		2416	}
		2417
		2418	sub should_reset {
		2419	my ($self) = @_;
		2420
		2421	$self->reset_at <= $cf::RUNTIME
		2422	}
		2423
		2424	sub reset {
		2425	my ($self) = @_;
		2426
		2427	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2428
		2429	return if $self->players;
		2430
		2431	cf::trace "resetting map ", $self->path, "\n";
		2432
		2433	$self->in_memory (cf::MAP_SWAPPED);
		2434
		2435	# need to save uniques path
		2436	unless ($self->{deny_save}) {
		2437	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2438
		2439	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2440	if $uniq;
		2441	}
		2442
		2443	delete $cf::MAP{$self->path};
		2444
		2445	$self->deactivate;
		2446	$_->clear_links_to ($self) for values %cf::MAP;
		2447	$self->clear;
		2448
		2449	$self->unlink_save;
		2450	$self->destroy;
		2451	}
		2452
		2453	my $nuke_counter = "aaaa";
		2454
		2455	sub nuke {
		2456	my ($self) = @_;
		2457
		2458	{
		2459	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2460
		2461	delete $cf::MAP{$self->path};
		2462
		2463	$self->unlink_save;
		2464
		2465	bless $self, "cf::map::wrap";
		2466	delete $self->{deny_reset};
		2467	$self->{deny_save} = 1;
		2468	$self->reset_timeout (1);
		2469	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2470
		2471	$cf::MAP{$self->path} = $self;
		2472	}
		2473
		2474	$self->reset; # polite request, might not happen
		2475	}
		2476
		2477	=item $maps = cf::map::tmp_maps
		2478
		2479	Returns an arrayref with all map paths of currently instantiated and saved
		2480	maps. May block.
		2481
		2482	=cut
		2483
		2484	sub tmp_maps() {
		2485	[
		2486	map {
		2487	utf8::decode $_;
		2488	/\.map$/
		2489	? normalise $_
		2490	: ()
		2491	} @{ aio_readdir $TMPDIR or [] }
		2492	]
		2493	}
		2494
		2495	=item $maps = cf::map::random_maps
		2496
		2497	Returns an arrayref with all map paths of currently instantiated and saved
		2498	random maps. May block.
		2499
		2500	=cut
		2501
		2502	sub random_maps() {
		2503	[
		2504	map {
		2505	utf8::decode $_;
		2506	/\.map$/
		2507	? normalise "?random/$_"
		2508	: ()
		2509	} @{ aio_readdir $RANDOMDIR or [] }
		2510	]
		2511	}
		2512
		2513	=item cf::map::unique_maps
		2514
		2515	Returns an arrayref of paths of all shared maps that have
		2516	instantiated unique items. May block.
		2517
		2518	=cut
		2519
		2520	sub unique_maps() {
		2521	[
		2522	map {
		2523	utf8::decode $_;
		2524	s/\.map$//; # TODO future compatibility hack
		2525	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2526	? ()
		2527	: normalise $_
		2528	} @{ aio_readdir $UNIQUEDIR or [] }
		2529	]
		2530	}
		2531
		2532	=item cf::map::static_maps
		2533
		2534	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2535	file in the shared directory excluding F</styles> and F</editor>). May
		2536	block.
		2537
		2538	=cut
		2539
		2540	sub static_maps() {
		2541	my @dirs = "";
		2542	my @maps;
		2543
		2544	while (@dirs) {
		2545	my $dir = shift @dirs;
		2546
		2547	next if $dir eq "/styles" || $dir eq "/editor";
		2548
		2549	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2550	or return;
		2551
		2552	for (@$files) {
		2553	s/\.map$// or next;
		2554	utf8::decode $_;
		2555	push @maps, "$dir/$_";
		2556	}
		2557
		2558	push @dirs, map "$dir/$_", @$dirs;
		2559	}
		2560
		2561	\@maps
		2562	}
		2563
		2564	=back
		2565
		2566	=head3 cf::object
		2567
		2568	=cut
		2569
		2570	package cf::object;
761		2571
762	=over 4	2572	=over 4
763		2573
764	=item cf::player::exists $login	2574	=item $ob->inv_recursive
765		2575
766	Returns true when the given account exists.	2576	Returns the inventory of the object I<and> their inventories, recursively,
		2577	but I<not> the object itself.
767		2578
768	=cut	2579	=cut
769		2580
770	sub cf::player::exists($) {	2581	sub inv_recursive_;
771	cf::player::find $_[0]	2582	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2583	map { $_, inv_recursive_ $_->inv } @_
773	}	2584	}
774		2585
		2586	sub inv_recursive {
		2587	inv_recursive_ inv $_[0]
		2588	}
		2589
		2590	=item $ref = $ob->ref
		2591
		2592	Creates and returns a persistent reference to an object that can be stored as a string.
		2593
		2594	=item $ob = cf::object::deref ($refstring)
		2595
		2596	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2597	even if the object actually exists. May block.
		2598
		2599	=cut
		2600
		2601	sub deref {
		2602	my ($ref) = @_;
		2603
		2604	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2605	my ($uuid, $name) = ($1, $2);
		2606	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2607	or return;
		2608	$pl->ob->uuid eq $uuid
		2609	or return;
		2610
		2611	$pl->ob
		2612	} else {
		2613	warn "$ref: cannot resolve object reference\n";
		2614	undef
		2615	}
		2616	}
		2617
		2618	package cf;
		2619
		2620	=back
		2621
		2622	=head3 cf::object::player
		2623
		2624	=over 4
		2625
775	=item $player->reply ($npc, $msg[, $flags])	2626	=item $player_object->reply ($npc, $msg[, $flags])
776		2627
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2628	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	2629	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	2630	dialogue with the given NPC character.
780		2631
781	=cut	2632	=cut
782		2633
		2634	our $SAY_CHANNEL = {
		2635	id => "say",
		2636	title => "Map",
		2637	reply => "say ",
		2638	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2639	};
		2640
		2641	our $CHAT_CHANNEL = {
		2642	id => "chat",
		2643	title => "Chat",
		2644	reply => "chat ",
		2645	tooltip => "Player chat and shouts, global to the server.",
		2646	};
		2647
783	# rough implementation of a future "reply" method that works	2648	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	2649	# with dialog boxes.
		2650	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	2651	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	2652	my ($self, $npc, $msg, $flags) = @_;
787		2653
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2654	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		2655
790	if ($self->{record_replies}) {	2656	if ($self->{record_replies}) {
791	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2657	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2658
792	} else {	2659	} else {
		2660	my $pl = $self->contr;
		2661
		2662	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2663	my $dialog = $pl->{npc_dialog};
		2664	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2665
		2666	} else {
793	$msg = $npc->name . " says: $msg" if $npc;	2667	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	2668	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2669	}
		2670	}
		2671	}
		2672
		2673	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2674
		2675	=cut
		2676
		2677	sub cf::object::send_msg {
		2678	my $pl = shift->contr
		2679	or return;
		2680	$pl->send_msg (@_);
		2681	}
		2682
		2683	=item $player_object->may ("access")
		2684
		2685	Returns wether the given player is authorized to access resource "access"
		2686	(e.g. "command_wizcast").
		2687
		2688	=cut
		2689
		2690	sub cf::object::player::may {
		2691	my ($self, $access) = @_;
		2692
		2693	$self->flag (cf::FLAG_WIZ) ||
		2694	(ref $cf::CFG{"may_$access"}
		2695	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2696	: $cf::CFG{"may_$access"})
		2697	}
		2698
		2699	=item $player_object->enter_link
		2700
		2701	Freezes the player and moves him/her to a special map (C<{link}>).
		2702
		2703	The player should be reasonably safe there for short amounts of time (e.g.
		2704	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2705	though, as the player cannot control the character while it is on the link
		2706	map.
		2707
		2708	Will never block.
		2709
		2710	=item $player_object->leave_link ($map, $x, $y)
		2711
		2712	Moves the player out of the special C<{link}> map onto the specified
		2713	map. If the map is not valid (or omitted), the player will be moved back
		2714	to the location he/she was before the call to C<enter_link>, or, if that
		2715	fails, to the emergency map position.
		2716
		2717	Might block.
		2718
		2719	=cut
		2720
		2721	sub link_map {
		2722	unless ($LINK_MAP) {
		2723	$LINK_MAP = cf::map::find "{link}"
		2724	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2725	$LINK_MAP->load;
		2726	}
		2727
		2728	$LINK_MAP
		2729	}
		2730
		2731	sub cf::object::player::enter_link {
		2732	my ($self) = @_;
		2733
		2734	$self->deactivate_recursive;
		2735
		2736	++$self->{_link_recursion};
		2737
		2738	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2739
		2740	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2741	if $self->map && $self->map->{path} ne "{link}";
		2742
		2743	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2744	}
		2745
		2746	sub cf::object::player::leave_link {
		2747	my ($self, $map, $x, $y) = @_;
		2748
		2749	return unless $self->contr->active;
		2750
		2751	my $link_pos = delete $self->{_link_pos};
		2752
		2753	unless ($map) {
		2754	# restore original map position
		2755	($map, $x, $y) = @{ $link_pos || [] };
		2756	$map = cf::map::find $map;
		2757
		2758	unless ($map) {
		2759	($map, $x, $y) = @$EMERGENCY_POSITION;
		2760	$map = cf::map::find $map
		2761	or die "FATAL: cannot load emergency map\n";
		2762	}
		2763	}
		2764
		2765	($x, $y) = (-1, -1)
		2766	unless (defined $x) && (defined $y);
		2767
		2768	# use -1 or undef as default coordinates, not 0, 0
		2769	($x, $y) = ($map->enter_x, $map->enter_y)
		2770	if $x <= 0 && $y <= 0;
		2771
		2772	$map->load;
		2773	$map->load_neighbours;
		2774
		2775	return unless $self->contr->active;
		2776
		2777	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2778	if ($self->enter_map ($map, $x, $y)) {
		2779	# entering was successful
		2780	delete $self->{_link_recursion};
		2781	# only activate afterwards, to support waiting in hooks
		2782	$self->activate_recursive;
		2783	}
		2784
		2785	}
		2786
		2787	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2788
		2789	Moves the player to the given map-path and coordinates by first freezing
		2790	her, loading and preparing them map, calling the provided $check callback
		2791	that has to return the map if sucecssful, and then unfreezes the player on
		2792	the new (success) or old (failed) map position. In either case, $done will
		2793	be called at the end of this process.
		2794
		2795	Note that $check will be called with a potentially non-loaded map, so if
		2796	it needs a loaded map it has to call C<< ->load >>.
		2797
		2798	=cut
		2799
		2800	our $GOTOGEN;
		2801
		2802	sub cf::object::player::goto {
		2803	my ($self, $path, $x, $y, $check, $done) = @_;
		2804
		2805	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2806	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2807	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2808	($path, $x, $y) = @$EMERGENCY_POSITION;
		2809	}
		2810
		2811	# do generation counting so two concurrent goto's will be executed in-order
		2812	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2813
		2814	$self->enter_link;
		2815
		2816	(async {
		2817	$Coro::current->{desc} = "player::goto $path $x $y";
		2818
		2819	# *tag paths override both path and x|y
		2820	if ($path =~ /^\*(.*)$/) {
		2821	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2822	my $ob = $obs[rand @obs];
		2823
		2824	# see if we actually can go there
		2825	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2826	$ob = $obs[rand @obs];
		2827	} else {
		2828	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2829	}
		2830	# else put us there anyways for now #d#
		2831
		2832	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2833	} else {
		2834	($path, $x, $y) = (undef, undef, undef);
		2835	}
		2836	}
		2837
		2838	my $map = eval {
		2839	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2840
		2841	if ($map) {
		2842	$map = $map->customise_for ($self);
		2843	$map = $check->($map, $x, $y, $self) if $check && $map;
		2844	} else {
		2845	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2846	}
		2847
		2848	$map
		2849	};
		2850
		2851	if ($@) {
		2852	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2853	LOG llevError | logBacktrace, Carp::longmess $@;
		2854	}
		2855
		2856	if ($gen == $self->{_goto_generation}) {
		2857	delete $self->{_goto_generation};
		2858	$self->leave_link ($map, $x, $y);
		2859	}
		2860
		2861	$done->($self) if $done;
		2862	})->prio (1);
		2863	}
		2864
		2865	=item $player_object->enter_exit ($exit_object)
		2866
		2867	=cut
		2868
		2869	sub parse_random_map_params {
		2870	my ($spec) = @_;
		2871
		2872	my $rmp = { # defaults
		2873	xsize => (cf::rndm 15, 40),
		2874	ysize => (cf::rndm 15, 40),
		2875	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2876	#layout => string,
795	}	2877	};
796	}
797		2878
		2879	for (split /\n/, $spec) {
		2880	my ($k, $v) = split /\s+/, $_, 2;
		2881
		2882	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2883	}
		2884
		2885	$rmp
		2886	}
		2887
		2888	sub prepare_random_map {
		2889	my ($exit) = @_;
		2890
		2891	# all this does is basically replace the /! path by
		2892	# a new random map path (?random/...) with a seed
		2893	# that depends on the exit object
		2894
		2895	my $rmp = parse_random_map_params $exit->msg;
		2896
		2897	if ($exit->map) {
		2898	$rmp->{region} = $exit->region->name;
		2899	$rmp->{origin_map} = $exit->map->path;
		2900	$rmp->{origin_x} = $exit->x;
		2901	$rmp->{origin_y} = $exit->y;
		2902
		2903	$exit->map->touch;
		2904	}
		2905
		2906	$rmp->{random_seed} ||= $exit->random_seed;
		2907
		2908	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2909	my $md5 = Digest::MD5::md5_hex $data;
		2910	my $meta = "$RANDOMDIR/$md5.meta";
		2911
		2912	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2913	aio_write $fh, 0, (length $data), $data, 0;
		2914	undef $fh;
		2915	aio_rename "$meta~", $meta;
		2916
		2917	my $slaying = "?random/$md5";
		2918
		2919	if ($exit->valid) {
		2920	$exit->slaying ("?random/$md5");
		2921	$exit->msg (undef);
		2922	}
		2923	}
		2924	}
		2925
		2926	sub cf::object::player::enter_exit {
		2927	my ($self, $exit) = @_;
		2928
		2929	return unless $self->type == cf::PLAYER;
		2930
		2931	$self->enter_link;
		2932
		2933	(async {
		2934	$Coro::current->{desc} = "enter_exit";
		2935
		2936	unless (eval {
		2937	$self->deactivate_recursive; # just to be sure
		2938
		2939	# random map handling
		2940	{
		2941	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2942
		2943	prepare_random_map $exit
		2944	if $exit->slaying eq "/!";
		2945	}
		2946
		2947	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2948	my $x = $exit->stats->hp;
		2949	my $y = $exit->stats->sp;
		2950
		2951	$self->goto ($map, $x, $y);
		2952
		2953	# if exit is damned, update players death & WoR home-position
		2954	$self->contr->savebed ($map, $x, $y)
		2955	if $exit->flag (cf::FLAG_DAMNED);
		2956
		2957	1
		2958	}) {
		2959	$self->message ("Something went wrong deep within the deliantra server. "
		2960	. "I'll try to bring you back to the map you were before. "
		2961	. "Please report this to the dungeon master!",
		2962	cf::NDI_UNIQUE | cf::NDI_RED);
		2963
		2964	error "ERROR in enter_exit: $@";
		2965	$self->leave_link;
		2966	}
		2967	})->prio (1);
		2968	}
		2969
		2970	=head3 cf::client
		2971
		2972	=over 4
		2973
		2974	=item $client->send_drawinfo ($text, $flags)
		2975
		2976	Sends a drawinfo packet to the client. Circumvents output buffering so
		2977	should not be used under normal circumstances.
		2978
		2979	=cut
		2980
		2981	sub cf::client::send_drawinfo {
		2982	my ($self, $text, $flags) = @_;
		2983
		2984	utf8::encode $text;
		2985	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2986	}
		2987
		2988	=item $client->send_big_packet ($pkt)
		2989
		2990	Like C<send_packet>, but tries to compress large packets, and fragments
		2991	them as required.
		2992
		2993	=cut
		2994
		2995	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2996
		2997	sub cf::client::send_big_packet {
		2998	my ($self, $pkt) = @_;
		2999
		3000	# try lzf for large packets
		3001	$pkt = "lzf " . Compress::LZF::compress $pkt
		3002	if 1024 <= length $pkt and $self->{can_lzf};
		3003
		3004	# split very large packets
		3005	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3006	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3007	$pkt = "frag";
		3008	}
		3009
		3010	$self->send_packet ($pkt);
		3011	}
		3012
		3013	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3014
		3015	Send a drawinfo or msg packet to the client, formatting the msg for the
		3016	client if neccessary. C<$type> should be a string identifying the type of
		3017	the message, with C<log> being the default. If C<$color> is negative, suppress
		3018	the message unless the client supports the msg packet.
		3019
		3020	=cut
		3021
		3022	# non-persistent channels (usually the info channel)
		3023	our %CHANNEL = (
		3024	"c/motd" => {
		3025	id => "infobox",
		3026	title => "MOTD",
		3027	reply => undef,
		3028	tooltip => "The message of the day",
		3029	},
		3030	"c/identify" => {
		3031	id => "infobox",
		3032	title => "Identify",
		3033	reply => undef,
		3034	tooltip => "Items recently identified",
		3035	},
		3036	"c/examine" => {
		3037	id => "infobox",
		3038	title => "Examine",
		3039	reply => undef,
		3040	tooltip => "Signs and other items you examined",
		3041	},
		3042	"c/shopinfo" => {
		3043	id => "infobox",
		3044	title => "Shop Info",
		3045	reply => undef,
		3046	tooltip => "What your bargaining skill tells you about the shop",
		3047	},
		3048	"c/book" => {
		3049	id => "infobox",
		3050	title => "Book",
		3051	reply => undef,
		3052	tooltip => "The contents of a note or book",
		3053	},
		3054	"c/lookat" => {
		3055	id => "infobox",
		3056	title => "Look",
		3057	reply => undef,
		3058	tooltip => "What you saw there",
		3059	},
		3060	"c/who" => {
		3061	id => "infobox",
		3062	title => "Players",
		3063	reply => undef,
		3064	tooltip => "Shows players who are currently online",
		3065	},
		3066	"c/body" => {
		3067	id => "infobox",
		3068	title => "Body Parts",
		3069	reply => undef,
		3070	tooltip => "Shows which body parts you posess and are available",
		3071	},
		3072	"c/statistics" => {
		3073	id => "infobox",
		3074	title => "Statistics",
		3075	reply => undef,
		3076	tooltip => "Shows your primary statistics",
		3077	},
		3078	"c/skills" => {
		3079	id => "infobox",
		3080	title => "Skills",
		3081	reply => undef,
		3082	tooltip => "Shows your experience per skill and item power",
		3083	},
		3084	"c/shopitems" => {
		3085	id => "infobox",
		3086	title => "Shop Items",
		3087	reply => undef,
		3088	tooltip => "Shows the items currently for sale in this shop",
		3089	},
		3090	"c/resistances" => {
		3091	id => "infobox",
		3092	title => "Resistances",
		3093	reply => undef,
		3094	tooltip => "Shows your resistances",
		3095	},
		3096	"c/pets" => {
		3097	id => "infobox",
		3098	title => "Pets",
		3099	reply => undef,
		3100	tooltip => "Shows information abotu your pets/a specific pet",
		3101	},
		3102	"c/perceiveself" => {
		3103	id => "infobox",
		3104	title => "Perceive Self",
		3105	reply => undef,
		3106	tooltip => "You gained detailed knowledge about yourself",
		3107	},
		3108	"c/uptime" => {
		3109	id => "infobox",
		3110	title => "Uptime",
		3111	reply => undef,
		3112	tooltip => "How long the server has been running since last restart",
		3113	},
		3114	"c/mapinfo" => {
		3115	id => "infobox",
		3116	title => "Map Info",
		3117	reply => undef,
		3118	tooltip => "Information related to the maps",
		3119	},
		3120	"c/party" => {
		3121	id => "party",
		3122	title => "Party",
		3123	reply => "gsay ",
		3124	tooltip => "Messages and chat related to your party",
		3125	},
		3126	"c/death" => {
		3127	id => "death",
		3128	title => "Death",
		3129	reply => undef,
		3130	tooltip => "Reason for and more info about your most recent death",
		3131	},
		3132	"c/say" => $SAY_CHANNEL,
		3133	"c/chat" => $CHAT_CHANNEL,
		3134	);
		3135
		3136	sub cf::client::send_msg {
		3137	my ($self, $channel, $msg, $color, @extra) = @_;
		3138
		3139	$msg = $self->pl->expand_cfpod ($msg)
		3140	unless $color & cf::NDI_VERBATIM;
		3141
		3142	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3143
		3144	# check predefined channels, for the benefit of C
		3145	if ($CHANNEL{$channel}) {
		3146	$channel = $CHANNEL{$channel};
		3147
		3148	$self->ext_msg (channel_info => $channel);
		3149	$channel = $channel->{id};
		3150
		3151	} elsif (ref $channel) {
		3152	# send meta info to client, if not yet sent
		3153	unless (exists $self->{channel}{$channel->{id}}) {
		3154	$self->{channel}{$channel->{id}} = $channel;
		3155	$self->ext_msg (channel_info => $channel);
		3156	}
		3157
		3158	$channel = $channel->{id};
		3159	}
		3160
		3161	return unless @extra || length $msg;
		3162
		3163	# default colour, mask it out
		3164	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3165	if $color & cf::NDI_DEF;
		3166
		3167	my $pkt = "msg "
		3168	. $self->{json_coder}->encode (
		3169	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3170	);
		3171
		3172	$self->send_big_packet ($pkt);
		3173	}
		3174
		3175	=item $client->ext_msg ($type, @msg)
		3176
		3177	Sends an ext event to the client.
		3178
		3179	=cut
		3180
		3181	sub cf::client::ext_msg($$@) {
		3182	my ($self, $type, @msg) = @_;
		3183
		3184	if ($self->extcmd == 2) {
		3185	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3186	} elsif ($self->extcmd == 1) { # TODO: remove
		3187	push @msg, msgtype => "event_$type";
		3188	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3189	}
		3190	}
		3191
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	3192	=item $client->ext_reply ($msgid, @msg)
799		3193
800	Sends an ext reply to the player.	3194	Sends an ext reply to the client.
801		3195
802	=cut	3196	=cut
803		3197
804	sub cf::player::ext_reply($$$%) {	3198	sub cf::client::ext_reply($$@) {
805	my ($self, $id, %msg) = @_;	3199	my ($self, $id, @msg) = @_;
806		3200
807	$msg{msgid} = $id;	3201	if ($self->extcmd == 2) {
808		3202	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
809	$self->send ("ext " . to_json \%msg);	3203	} elsif ($self->extcmd == 1) {
		3204	#TODO: version 1, remove
		3205	unshift @msg, msgtype => "reply", msgid => $id;
		3206	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3207	}
810	}	3208	}
		3209
		3210	=item $success = $client->query ($flags, "text", \&cb)
		3211
		3212	Queues a query to the client, calling the given callback with
		3213	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3214	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3215
		3216	Queries can fail, so check the return code. Or don't, as queries will
		3217	become reliable at some point in the future.
		3218
		3219	=cut
		3220
		3221	sub cf::client::query {
		3222	my ($self, $flags, $text, $cb) = @_;
		3223
		3224	return unless $self->state == ST_PLAYING
		3225	|| $self->state == ST_SETUP
		3226	|| $self->state == ST_CUSTOM;
		3227
		3228	$self->state (ST_CUSTOM);
		3229
		3230	utf8::encode $text;
		3231	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3232
		3233	$self->send_packet ($self->{query_queue}[0][0])
		3234	if @{ $self->{query_queue} } == 1;
		3235
		3236	1
		3237	}
		3238
		3239	cf::client->attach (
		3240	on_connect => sub {
		3241	my ($ns) = @_;
		3242
		3243	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3244	},
		3245	on_reply => sub {
		3246	my ($ns, $msg) = @_;
		3247
		3248	# this weird shuffling is so that direct followup queries
		3249	# get handled first
		3250	my $queue = delete $ns->{query_queue}
		3251	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3252
		3253	(shift @$queue)->[1]->($msg);
		3254	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3255
		3256	push @{ $ns->{query_queue} }, @$queue;
		3257
		3258	if (@{ $ns->{query_queue} } == @$queue) {
		3259	if (@$queue) {
		3260	$ns->send_packet ($ns->{query_queue}[0][0]);
		3261	} else {
		3262	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3263	}
		3264	}
		3265	},
		3266	on_exticmd => sub {
		3267	my ($ns, $buf) = @_;
		3268
		3269	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3270
		3271	if (ref $msg) {
		3272	my ($type, $reply, @payload) =
		3273	"ARRAY" eq ref $msg
		3274	? @$msg
		3275	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3276
		3277	my @reply;
		3278
		3279	if (my $cb = $EXTICMD{$type}) {
		3280	@reply = $cb->($ns, @payload);
		3281	}
		3282
		3283	$ns->ext_reply ($reply, @reply)
		3284	if $reply;
		3285
		3286	} else {
		3287	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3288	}
		3289
		3290	cf::override;
		3291	},
		3292	);
		3293
		3294	=item $client->async (\&cb)
		3295
		3296	Create a new coroutine, running the specified callback. The coroutine will
		3297	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3298	or loss of connection).
		3299
		3300	=cut
		3301
		3302	sub cf::client::async {
		3303	my ($self, $cb) = @_;
		3304
		3305	my $coro = &Coro::async ($cb);
		3306
		3307	$coro->on_destroy (sub {
		3308	delete $self->{_coro}{$coro+0};
		3309	});
		3310
		3311	$self->{_coro}{$coro+0} = $coro;
		3312
		3313	$coro
		3314	}
		3315
		3316	cf::client->attach (
		3317	on_client_destroy => sub {
		3318	my ($ns) = @_;
		3319
		3320	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3321	},
		3322	);
811		3323
812	=back	3324	=back
813		3325
814	=cut
815
816	#############################################################################
817		3326
818	=head2 SAFE SCRIPTING	3327	=head2 SAFE SCRIPTING
819		3328
820	Functions that provide a safe environment to compile and execute	3329	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	3330	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	3331	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	3332	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	3333	functions and methods that can be called is greatly reduced.
825		3334
826	=cut	3335	=cut
827		3336
828	our $safe = new Safe "safe";	3337	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	3338	our $safe_hole = new Safe::Hole;
830		3339
831	$SIG{FPE} = 'IGNORE';	3340	$SIG{FPE} = 'IGNORE';
832		3341
833	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3342	$safe->permit_only (Opcode::opset qw(
		3343	:base_core :base_mem :base_orig :base_math :base_loop
		3344	grepstart grepwhile mapstart mapwhile
		3345	sort time
		3346	));
834		3347
835	# here we export the classes and methods available to script code	3348	# here we export the classes and methods available to script code
836		3349
837	=pod	3350	=pod
838		3351
839	The following fucntions and emthods are available within a safe environment:	3352	The following functions and methods are available within a safe environment:
840		3353
841	cf::object contr pay_amount pay_player	3354	cf::object
		3355	contr pay_amount pay_player map x y force_find force_add destroy
		3356	insert remove name archname title slaying race decrease split
		3357	value
		3358
842	cf::object::player player	3359	cf::object::player
843	cf::player peaceful	3360	player
		3361
		3362	cf::player
		3363	peaceful
		3364
		3365	cf::map
		3366	trigger
844		3367
845	=cut	3368	=cut
846		3369
847	for (	3370	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	3371	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3372	insert remove inv nrof name archname title slaying race
		3373	decrease split destroy change_exp value msg lore send_msg)],
849	["cf::object::player" => qw(player)],	3374	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	3375	["cf::player" => qw(peaceful send_msg)],
		3376	["cf::map" => qw(trigger)],
851	) {	3377	) {
852	no strict 'refs';
853	my ($pkg, @funs) = @$_;	3378	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3379	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	3380	for @funs;
856	}	3381	}
857		3382
…		…
872		3397
873	my $qcode = $code;	3398	my $qcode = $code;
874	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3399	$qcode =~ s/"/‟/g; # not allowed in #line filenames
875	$qcode =~ s/\n/\\n/g;	3400	$qcode =~ s/\n/\\n/g;
876		3401
		3402	%vars = (_dummy => 0) unless %vars;
		3403
		3404	my @res;
877	local $_;	3405	local $_;
878	local @safe::cf::_safe_eval_args = values %vars;
879		3406
880	my $eval =	3407	my $eval =
881	"do {\n"	3408	"do {\n"
882	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3409	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
883	. "#line 0 \"{$qcode}\"\n"	3410	. "#line 0 \"{$qcode}\"\n"
884	. $code	3411	. $code
885	. "\n}"	3412	. "\n}"
886	;	3413	;
887		3414
		3415	if ($CFG{safe_eval}) {
888	sub_generation_inc;	3416	sub_generation_inc;
		3417	local @safe::cf::_safe_eval_args = values %vars;
889	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3418	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
890	sub_generation_inc;	3419	sub_generation_inc;
		3420	} else {
		3421	local @cf::_safe_eval_args = values %vars;
		3422	@res = wantarray ? eval eval : scalar eval $eval;
		3423	}
891		3424
892	if ($@) {	3425	if ($@) {
893	warn "$@";	3426	warn "$@",
894	warn "while executing safe code '$code'\n";	3427	"while executing safe code '$code'\n",
895	warn "with arguments " . (join " ", %vars) . "\n";	3428	"with arguments " . (join " ", %vars) . "\n";
896	}	3429	}
897		3430
898	wantarray ? @res : $res[0]	3431	wantarray ? @res : $res[0]
899	}	3432	}
900		3433
…		…
914	=cut	3447	=cut
915		3448
916	sub register_script_function {	3449	sub register_script_function {
917	my ($fun, $cb) = @_;	3450	my ($fun, $cb) = @_;
918		3451
919	no strict 'refs';	3452	$fun = "safe::$fun" if $CFG{safe_eval};
920	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3453	*$fun = $safe_hole->wrap ($cb);
921	}	3454	}
922		3455
923	=back	3456	=back
924		3457
925	=cut	3458	=cut
926		3459
927	#############################################################################	3460	#############################################################################
		3461	# the server's init and main functions
928		3462
929	=head2 EXTENSION DATABASE SUPPORT	3463	sub load_facedata($) {
		3464	my ($path) = @_;
930		3465
931	Crossfire maintains a very simple database for extension use. It can	3466	# HACK to clear player env face cache, we need some signal framework
932	currently store anything that can be serialised using Storable, which	3467	# for this (global event?)
933	excludes objects.	3468	%ext::player_env::MUSIC_FACE_CACHE = ();
934		3469
935	The parameter C<$family> should best start with the name of the extension	3470	my $enc = JSON::XS->new->utf8->canonical->relaxed;
936	using it, it should be unique.
937		3471
938	=over 4	3472	trace "loading facedata from $path\n";
939		3473
940	=item $hashref = cf::db_get $family	3474	my $facedata = decode_storable load_file $path;
941		3475
942	Return a hashref for use by the extension C<$family>, which can be	3476	$facedata->{version} == 2
943	modified. After modifications, you have to call C<cf::db_dirty> or	3477	or cf::cleanup "$path: version mismatch, cannot proceed.";
944	C<cf::db_sync>.
945		3478
946	=item $value = cf::db_get $family => $key	3479	# patch in the exptable
		3480	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3481	$facedata->{resource}{"res/exp_table"} = {
		3482	type => FT_RSRC,
		3483	data => $exp_table,
		3484	hash => (Digest::MD5::md5 $exp_table),
		3485	};
		3486	cf::cede_to_tick;
947		3487
948	Returns a single value from the database	3488	{
		3489	my $faces = $facedata->{faceinfo};
949		3490
950	=item cf::db_put $family => $hashref	3491	while (my ($face, $info) = each %$faces) {
		3492	my $idx = (cf::face::find $face) || cf::face::alloc $face;
951		3493
952	Stores the given family hashref into the database. Updates are delayed, if	3494	cf::face::set_visibility $idx, $info->{visibility};
953	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3495	cf::face::set_magicmap $idx, $info->{magicmap};
		3496	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3497	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3498	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
954		3499
955	=item cf::db_put $family => $key => $value	3500	cf::cede_to_tick;
		3501	}
956		3502
957	Stores the given C<$value> in the family hash. Updates are delayed, if you	3503	while (my ($face, $info) = each %$faces) {
958	want the data to be synced to disk immediately, use C<cf::db_sync>.	3504	next unless $info->{smooth};
959		3505
960	=item cf::db_dirty	3506	my $idx = cf::face::find $face
		3507	or next;
961		3508
962	Marks the database as dirty, to be updated at a later time.	3509	if (my $smooth = cf::face::find $info->{smooth}) {
		3510	cf::face::set_smooth $idx, $smooth;
		3511	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3512	} else {
		3513	error "smooth face '$info->{smooth}' not found for face '$face'";
		3514	}
963		3515
964	=item cf::db_sync	3516	cf::cede_to_tick;
		3517	}
		3518	}
965		3519
966	Immediately write the database to disk I<if it is dirty>.	3520	{
		3521	my $anims = $facedata->{animinfo};
967		3522
968	=cut	3523	while (my ($anim, $info) = each %$anims) {
		3524	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3525	cf::cede_to_tick;
		3526	}
		3527
		3528	cf::anim::invalidate_all; # d'oh
		3529	}
		3530
		3531	{
		3532	my $res = $facedata->{resource};
		3533
		3534	while (my ($name, $info) = each %$res) {
		3535	if (defined $info->{type}) {
		3536	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3537
		3538	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3539	cf::face::set_type $idx, $info->{type};
		3540	} else {
		3541	$RESOURCE{$name} = $info; # unused
		3542	}
		3543
		3544	cf::cede_to_tick;
		3545	}
		3546	}
		3547
		3548	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3549
		3550	1
		3551	}
		3552
		3553	register_exticmd fx_want => sub {
		3554	my ($ns, $want) = @_;
		3555
		3556	while (my ($k, $v) = each %$want) {
		3557	$ns->fx_want ($k, $v);
		3558	}
		3559	};
		3560
		3561	sub load_resource_file($) {
		3562	my $guard = lock_acquire "load_resource_file";
		3563
		3564	my $status = load_resource_file_ $_[0];
		3565	get_slot 0.1, 100;
		3566	cf::arch::commit_load;
		3567
		3568	$status
		3569	}
		3570
		3571	sub reload_regions {
		3572	# HACK to clear player env face cache, we need some signal framework
		3573	# for this (global event?)
		3574	%ext::player_env::MUSIC_FACE_CACHE = ();
		3575
		3576	load_resource_file "$MAPDIR/regions"
		3577	or die "unable to load regions file\n";
		3578
		3579	for (cf::region::list) {
		3580	$_->{match} = qr/$_->{match}/
		3581	if exists $_->{match};
		3582	}
		3583	}
		3584
		3585	sub reload_facedata {
		3586	load_facedata "$DATADIR/facedata"
		3587	or die "unable to load facedata\n";
		3588	}
		3589
		3590	sub reload_archetypes {
		3591	load_resource_file "$DATADIR/archetypes"
		3592	or die "unable to load archetypes\n";
		3593	}
		3594
		3595	sub reload_treasures {
		3596	load_resource_file "$DATADIR/treasures"
		3597	or die "unable to load treasurelists\n";
		3598	}
		3599
		3600	sub reload_sound {
		3601	trace "loading sound config from $DATADIR/sound\n";
		3602
		3603	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3604
		3605	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3606	my $sound = $soundconf->{compat}[$_]
		3607	or next;
		3608
		3609	my $face = cf::face::find "sound/$sound->[1]";
		3610	cf::sound::set $sound->[0] => $face;
		3611	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3612	}
		3613
		3614	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3615	my $face = cf::face::find "sound/$v";
		3616	cf::sound::set $k => $face;
		3617	}
		3618	}
		3619
		3620	sub reload_resources {
		3621	trace "reloading resource files...\n";
		3622
		3623	reload_exp_table;
		3624	reload_materials;
		3625	reload_facedata;
		3626	reload_sound;
		3627	reload_archetypes;
		3628	reload_regions;
		3629	reload_treasures;
		3630
		3631	trace "finished reloading resource files\n";
		3632	}
		3633
		3634	sub reload_config {
		3635	trace "reloading config file...\n";
		3636
		3637	my $config = load_file "$CONFDIR/config";
		3638	utf8::decode $config;
		3639	*CFG = decode_yaml $config;
		3640
		3641	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3642
		3643	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3644	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3645
		3646	if (exists $CFG{mlockall}) {
		3647	eval {
		3648	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3649	and die "WARNING: m(un)lockall failed: $!\n";
		3650	};
		3651	warn $@ if $@;
		3652	}
		3653	}
		3654
		3655	sub pidfile() {
		3656	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3657	or die "$PIDFILE: $!";
		3658	flock $fh, &Fcntl::LOCK_EX
		3659	or die "$PIDFILE: flock: $!";
		3660	$fh
		3661	}
		3662
		3663	# make sure only one server instance is running at any one time
		3664	sub atomic {
		3665	my $fh = pidfile;
		3666
		3667	my $pid = <$fh>;
		3668	kill 9, $pid if $pid > 0;
		3669
		3670	seek $fh, 0, 0;
		3671	print $fh $$;
		3672	}
		3673
		3674	sub main_loop {
		3675	trace "EV::loop starting\n";
		3676	if (1) {
		3677	EV::loop;
		3678	}
		3679	trace "EV::loop returned\n";
		3680	goto &main_loop unless $REALLY_UNLOOP;
		3681	}
		3682
		3683	sub main {
		3684	cf::init_globals; # initialise logging
		3685
		3686	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3687	LOG llevInfo, "Copyright (C) 2005-2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3688	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3689	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3690
		3691	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3692
		3693	# we must not ever block the main coroutine
		3694	local $Coro::idle = sub {
		3695	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3696	(async {
		3697	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3698	EV::loop EV::LOOP_ONESHOT;
		3699	})->prio (Coro::PRIO_MAX);
		3700	};
		3701
		3702	evthread_start IO::AIO::poll_fileno;
		3703
		3704	cf::sync_job {
		3705	cf::incloader::init ();
		3706
		3707	cf::init_anim;
		3708	cf::init_attackmess;
		3709	cf::init_dynamic;
		3710
		3711	cf::load_settings;
		3712
		3713	reload_resources;
		3714	reload_config;
		3715	db_init;
		3716
		3717	cf::init_uuid;
		3718	cf::init_signals;
		3719	cf::init_skills;
		3720
		3721	cf::init_beforeplay;
		3722
		3723	atomic;
		3724
		3725	load_extensions;
		3726
		3727	utime time, time, $RUNTIMEFILE;
		3728
		3729	# no (long-running) fork's whatsoever before this point(!)
		3730	use POSIX ();
		3731	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3732
		3733	cf::_post_init 0;
		3734	};
		3735
		3736	cf::object::thawer::errors_are_fatal 0;
		3737	info "parse errors in files are no longer fatal from this point on.\n";
		3738
		3739	my $free_main; $free_main = EV::idle sub {
		3740	undef $free_main;
		3741	undef &main; # free gobs of memory :)
		3742	};
		3743
		3744	goto &main_loop;
		3745	}
		3746
		3747	#############################################################################
		3748	# initialisation and cleanup
		3749
		3750	# install some emergency cleanup handlers
		3751	BEGIN {
		3752	our %SIGWATCHER = ();
		3753	for my $signal (qw(INT HUP TERM)) {
		3754	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3755	cf::cleanup "SIG$signal";
		3756	};
		3757	}
		3758	}
		3759
		3760	sub write_runtime_sync {
		3761	my $t0 = AE::time;
		3762
		3763	# first touch the runtime file to show we are still running:
		3764	# the fsync below can take a very very long time.
		3765
		3766	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3767
		3768	my $guard = cf::lock_acquire "write_runtime";
		3769
		3770	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3771	or return;
		3772
		3773	my $value = $cf::RUNTIME + 90 + 10;
		3774	# 10 is the runtime save interval, for a monotonic clock
		3775	# 60 allows for the watchdog to kill the server.
		3776
		3777	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3778	and return;
		3779
		3780	# always fsync - this file is important
		3781	aio_fsync $fh
		3782	and return;
		3783
		3784	# touch it again to show we are up-to-date
		3785	aio_utime $fh, undef, undef;
		3786
		3787	close $fh
		3788	or return;
		3789
		3790	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3791	and return;
		3792
		3793	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3794
		3795	1
		3796	}
		3797
		3798	our $uuid_lock;
		3799	our $uuid_skip;
		3800
		3801	sub write_uuid_sync($) {
		3802	$uuid_skip ||= $_[0];
		3803
		3804	return if $uuid_lock;
		3805	local $uuid_lock = 1;
		3806
		3807	my $uuid = "$LOCALDIR/uuid";
		3808
		3809	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3810	or return;
		3811
		3812	my $value = uuid_seq uuid_cur;
		3813
		3814	unless ($value) {
		3815	info "cowardly refusing to write zero uuid value!\n";
		3816	return;
		3817	}
		3818
		3819	my $value = uuid_str $value + $uuid_skip;
		3820	$uuid_skip = 0;
		3821
		3822	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3823	and return;
		3824
		3825	# always fsync - this file is important
		3826	aio_fsync $fh
		3827	and return;
		3828
		3829	close $fh
		3830	or return;
		3831
		3832	aio_rename "$uuid~", $uuid
		3833	and return;
		3834
		3835	trace "uuid file written ($value).\n";
		3836
		3837	1
		3838
		3839	}
		3840
		3841	sub write_uuid($$) {
		3842	my ($skip, $sync) = @_;
		3843
		3844	$sync ? write_uuid_sync $skip
		3845	: async { write_uuid_sync $skip };
		3846	}
		3847
		3848	sub emergency_save() {
		3849	my $freeze_guard = cf::freeze_mainloop;
		3850
		3851	info "emergency_perl_save: enter\n";
		3852
		3853	# this is a trade-off: we want to be very quick here, so
		3854	# save all maps without fsync, and later call a global sync
		3855	# (which in turn might be very very slow)
		3856	local $USE_FSYNC = 0;
		3857
		3858	cf::sync_job {
		3859	cf::write_runtime_sync; # external watchdog should not bark
		3860
		3861	# use a peculiar iteration method to avoid tripping on perl
		3862	# refcount bugs in for. also avoids problems with players
		3863	# and maps saved/destroyed asynchronously.
		3864	info "emergency_perl_save: begin player save\n";
		3865	for my $login (keys %cf::PLAYER) {
		3866	my $pl = $cf::PLAYER{$login} or next;
		3867	$pl->valid or next;
		3868	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3869	$pl->save;
		3870	}
		3871	info "emergency_perl_save: end player save\n";
		3872
		3873	cf::write_runtime_sync; # external watchdog should not bark
		3874
		3875	info "emergency_perl_save: begin map save\n";
		3876	for my $path (keys %cf::MAP) {
		3877	my $map = $cf::MAP{$path} or next;
		3878	$map->valid or next;
		3879	$map->save;
		3880	}
		3881	info "emergency_perl_save: end map save\n";
		3882
		3883	cf::write_runtime_sync; # external watchdog should not bark
		3884
		3885	info "emergency_perl_save: begin database checkpoint\n";
		3886	BDB::db_env_txn_checkpoint $DB_ENV;
		3887	info "emergency_perl_save: end database checkpoint\n";
		3888
		3889	info "emergency_perl_save: begin write uuid\n";
		3890	write_uuid_sync 1;
		3891	info "emergency_perl_save: end write uuid\n";
		3892
		3893	cf::write_runtime_sync; # external watchdog should not bark
		3894
		3895	trace "emergency_perl_save: syncing database to disk";
		3896	BDB::db_env_txn_checkpoint $DB_ENV;
		3897
		3898	info "emergency_perl_save: starting sync\n";
		3899	IO::AIO::aio_sync sub {
		3900	info "emergency_perl_save: finished sync\n";
		3901	};
		3902
		3903	cf::write_runtime_sync; # external watchdog should not bark
		3904
		3905	trace "emergency_perl_save: flushing outstanding aio requests";
		3906	while (IO::AIO::nreqs || BDB::nreqs) {
		3907	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3908	}
		3909
		3910	cf::write_runtime_sync; # external watchdog should not bark
		3911	};
		3912
		3913	info "emergency_perl_save: leave\n";
		3914	}
		3915
		3916	sub post_cleanup {
		3917	my ($make_core) = @_;
		3918
		3919	IO::AIO::flush;
		3920
		3921	error Carp::longmess "post_cleanup backtrace"
		3922	if $make_core;
		3923
		3924	my $fh = pidfile;
		3925	unlink $PIDFILE if <$fh> == $$;
		3926	}
		3927
		3928	# a safer delete_package, copied from Symbol
		3929	sub clear_package($) {
		3930	my $pkg = shift;
		3931
		3932	# expand to full symbol table name if needed
		3933	unless ($pkg =~ /^main::.*::$/) {
		3934	$pkg = "main$pkg" if $pkg =~ /^::/;
		3935	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3936	$pkg .= '::' unless $pkg =~ /::$/;
		3937	}
		3938
		3939	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3940	my $stem_symtab = *{$stem}{HASH};
		3941
		3942	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3943	or return;
		3944
		3945	# clear all symbols
		3946	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3947	for my $name (keys %$leaf_symtab) {
		3948	_gv_clear *{"$pkg$name"};
		3949	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3950	}
		3951	}
		3952
		3953	sub do_reload_perl() {
		3954	# can/must only be called in main
		3955	unless (in_main) {
		3956	error "can only reload from main coroutine";
		3957	return;
		3958	}
		3959
		3960	return if $RELOAD++;
		3961
		3962	my $t1 = AE::time;
		3963
		3964	while ($RELOAD) {
		3965	cf::get_slot 0.1, -1, "reload_perl";
		3966	info "perl_reload: reloading...";
		3967
		3968	trace "perl_reload: entering sync_job";
		3969
		3970	cf::sync_job {
		3971	#cf::emergency_save;
		3972
		3973	trace "perl_reload: cancelling all extension coros";
		3974	$_->cancel for values %EXT_CORO;
		3975	%EXT_CORO = ();
		3976
		3977	trace "perl_reload: removing commands";
		3978	%COMMAND = ();
		3979
		3980	trace "perl_reload: removing ext/exti commands";
		3981	%EXTCMD = ();
		3982	%EXTICMD = ();
		3983
		3984	trace "perl_reload: unloading/nuking all extensions";
		3985	for my $pkg (@EXTS) {
		3986	trace "... unloading $pkg";
		3987
		3988	if (my $cb = $pkg->can ("unload")) {
		3989	eval {
		3990	$cb->($pkg);
		3991	1
		3992	} or error "$pkg unloaded, but with errors: $@";
		3993	}
		3994
		3995	trace "... clearing $pkg";
		3996	clear_package $pkg;
		3997	}
		3998
		3999	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4000	while (my ($k, $v) = each %INC) {
		4001	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4002
		4003	trace "... unloading $k";
		4004	delete $INC{$k};
		4005
		4006	$k =~ s/\.pm$//;
		4007	$k =~ s/\//::/g;
		4008
		4009	if (my $cb = $k->can ("unload_module")) {
		4010	$cb->();
		4011	}
		4012
		4013	clear_package $k;
		4014	}
		4015
		4016	trace "perl_reload: getting rid of safe::, as good as possible";
		4017	clear_package "safe::$_"
		4018	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4019
		4020	trace "perl_reload: unloading cf.pm \"a bit\"";
		4021	delete $INC{"cf.pm"};
		4022	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4023
		4024	# don't, removes xs symbols, too,
		4025	# and global variables created in xs
		4026	#clear_package __PACKAGE__;
		4027
		4028	info "perl_reload: unload completed, starting to reload now";
		4029
		4030	trace "perl_reload: reloading cf.pm";
		4031	require cf;
		4032	cf::_connect_to_perl_1;
		4033
		4034	trace "perl_reload: loading config and database again";
		4035	cf::reload_config;
		4036
		4037	trace "perl_reload: loading extensions";
		4038	cf::load_extensions;
		4039
		4040	if ($REATTACH_ON_RELOAD) {
		4041	trace "perl_reload: reattaching attachments to objects/players";
		4042	_global_reattach; # objects, sockets
		4043	trace "perl_reload: reattaching attachments to maps";
		4044	reattach $_ for values %MAP;
		4045	trace "perl_reload: reattaching attachments to players";
		4046	reattach $_ for values %PLAYER;
		4047	}
		4048
		4049	cf::_post_init 1;
		4050
		4051	trace "perl_reload: leaving sync_job";
		4052
		4053	1
		4054	} or do {
		4055	error $@;
		4056	cf::cleanup "perl_reload: error, exiting.";
		4057	};
		4058
		4059	--$RELOAD;
		4060	}
		4061
		4062	$t1 = AE::time - $t1;
		4063	info "perl_reload: completed in ${t1}s\n";
		4064	};
		4065
		4066	our $RELOAD_WATCHER; # used only during reload
		4067
		4068	sub reload_perl() {
		4069	# doing reload synchronously and two reloads happen back-to-back,
		4070	# coro crashes during coro_state_free->destroy here.
		4071
		4072	$RELOAD_WATCHER ||= cf::async {
		4073	Coro::AIO::aio_wait cache_extensions;
		4074
		4075	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4076	do_reload_perl;
		4077	undef $RELOAD_WATCHER;
		4078	};
		4079	};
		4080	}
		4081
		4082	register_command "reload" => sub {
		4083	my ($who, $arg) = @_;
		4084
		4085	if ($who->flag (FLAG_WIZ)) {
		4086	$who->message ("reloading server.");
		4087	async {
		4088	$Coro::current->{desc} = "perl_reload";
		4089	reload_perl;
		4090	};
		4091	}
		4092	};
		4093
		4094	#############################################################################
		4095
		4096	my $bug_warning = 0;
		4097
		4098	our @WAIT_FOR_TICK;
		4099	our @WAIT_FOR_TICK_BEGIN;
		4100
		4101	sub wait_for_tick() {
		4102	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4103
		4104	my $signal = new Coro::Signal;
		4105	push @WAIT_FOR_TICK, $signal;
		4106	$signal->wait;
		4107	}
		4108
		4109	sub wait_for_tick_begin() {
		4110	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4111
		4112	my $signal = new Coro::Signal;
		4113	push @WAIT_FOR_TICK_BEGIN, $signal;
		4114	$signal->wait;
		4115	}
		4116
		4117	sub tick {
		4118	if ($Coro::current != $Coro::main) {
		4119	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4120	unless ++$bug_warning > 10;
		4121	return;
		4122	}
		4123
		4124	cf::server_tick; # one server iteration
		4125
		4126	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4127
		4128	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4129	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4130	Coro::async_pool {
		4131	$Coro::current->{desc} = "runtime saver";
		4132	write_runtime_sync
		4133	or error "ERROR: unable to write runtime file: $!";
		4134	};
		4135	}
		4136
		4137	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4138	$sig->send;
		4139	}
		4140	while (my $sig = shift @WAIT_FOR_TICK) {
		4141	$sig->send;
		4142	}
		4143
		4144	$LOAD = ($NOW - $TICK_START) / $TICK;
		4145	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4146
		4147	if (0) {
		4148	if ($NEXT_TICK) {
		4149	my $jitter = $TICK_START - $NEXT_TICK;
		4150	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4151	debug "jitter $JITTER\n";#d#
		4152	}
		4153	}
		4154	}
969		4155
970	{	4156	{
971	my $db;	4157	# configure BDB
972	my $path = cf::localdir . "/database.pst";
973		4158
974	sub db_load() {	4159	BDB::min_parallel 16;
975	warn "loading database $path\n";#d# remove later	4160	BDB::max_poll_reqs $TICK * 0.1;
976	$db = stat $path ? Storable::retrieve $path : { };	4161	$AnyEvent::BDB::WATCHER->priority (1);
977	}
978		4162
979	my $pid;	4163	unless ($DB_ENV) {
		4164	$DB_ENV = BDB::db_env_create;
		4165	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4166	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4167	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4168	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4169	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
980		4170
981	sub db_save() {	4171	cf::sync_job {
982	warn "saving database $path\n";#d# remove later
983	waitpid $pid, 0 if $pid;
984	if (0 == ($pid = fork)) {
985	$db->{_meta}{version} = 1;
986	Storable::nstore $db, "$path~";
987	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;
989	}
990	}
991
992	my $dirty;
993
994	sub db_sync() {
995	db_save if $dirty;
996	undef $dirty;
997	}
998
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1000	db_sync;
1001	});
1002
1003	sub db_dirty() {
1004	$dirty = 1;
1005	$idle->start;
1006	}
1007
1008	sub db_get($;$) {
1009	@_ >= 2
1010	? $db->{$_[0]}{$_[1]}
1011	: ($db->{$_[0]} ||= { })
1012	}
1013
1014	sub db_put($$;$) {
1015	if (@_ >= 3) {
1016	$db->{$_[0]}{$_[1]} = $_[2];
1017	} else {	4172	eval {
1018	$db->{$_[0]} = $_[1];	4173	BDB::db_env_open
1019	}	4174	$DB_ENV,
1020	db_dirty;	4175	$BDBDIR,
1021	}	4176	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4177	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4178	0666;
1022		4179
1023	attach_global	4180	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1024	prio => 10000,
1025	on_cleanup => sub {
1026	db_sync;
1027	},
1028	;
1029	}
1030
1031	#############################################################################
1032	# the server's main()
1033
1034	sub load_cfg {
1035	open my $fh, "<:utf8", cf::confdir . "/config"
1036	or return;
1037
1038	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;
1040
1041	use Data::Dumper; warn Dumper \%CFG;
1042	}
1043
1044	sub main {
1045	load_cfg;
1046	db_load;
1047	load_extensions;
1048	Event::loop;
1049	}
1050
1051	#############################################################################
1052	# initialisation
1053
1054	sub _perl_reload(&) {
1055	my ($msg) = @_;
1056
1057	$msg->("reloading...");
1058
1059	eval {
1060	# cancel all watchers
1061	$_->cancel for Event::all_watchers;
1062
1063	# unload all extensions
1064	for (@exts) {
1065	$msg->("unloading <$_>");
1066	unload_extension $_;
1067	}
1068
1069	# unload all modules loaded from $LIBDIR
1070	while (my ($k, $v) = each %INC) {
1071	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1072
1073	$msg->("removing <$k>");
1074	delete $INC{$k};
1075
1076	$k =~ s/\.pm$//;
1077	$k =~ s/\//::/g;
1078
1079	if (my $cb = $k->can ("unload_module")) {
1080	$cb->();
1081	}	4181	};
1082		4182
1083	Symbol::delete_package $k;	4183	cf::cleanup "db_env_open(db): $@" if $@;
1084	}	4184	};
		4185	}
1085		4186
1086	# sync database to disk	4187	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1087	cf::db_sync;	4188	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1088
1089	# get rid of safe::, as good as possible
1090	Symbol::delete_package "safe::$_"
1091	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1092
1093	# remove register_script_function callbacks
1094	# TODO
1095
1096	# unload cf.pm "a bit"
1097	delete $INC{"cf.pm"};
1098
1099	# don't, removes xs symbols, too,
1100	# and global variables created in xs
1101	#Symbol::delete_package __PACKAGE__;
1102
1103	# reload cf.pm
1104	$msg->("reloading cf.pm");
1105	require cf;
1106
1107	# load database again
1108	cf::db_load;
1109
1110	# load extensions
1111	$msg->("load extensions");
1112	cf::load_extensions;
1113
1114	# reattach attachments to objects
1115	$msg->("reattach");
1116	_global_reattach;
1117	};	4189	};
1118	$msg->($@) if $@;	4190	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1119		4191	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1120	$msg->("reloaded");
1121	};
1122
1123	sub perl_reload() {
1124	_perl_reload {
1125	warn $_[0];
1126	print "$_[0]\n";
1127	};	4192	};
		4193	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4194	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4195	};
1128	}	4196	}
1129		4197
1130	register_command "perl-reload", 0, sub {	4198	{
		4199	# configure IO::AIO
		4200
		4201	IO::AIO::min_parallel 8;
		4202	IO::AIO::max_poll_time $TICK * 0.1;
		4203	undef $AnyEvent::AIO::WATCHER;
		4204	}
		4205
		4206	our $_log_backtrace;
		4207	our $_log_backtrace_last;
		4208
		4209	sub _log_backtrace {
1131	my ($who, $arg) = @_;	4210	my ($msg, @addr) = @_;
1132		4211
1133	if ($who->flag (FLAG_WIZ)) {	4212	$msg =~ s/\n$//;
1134	_perl_reload {	4213
1135	warn $_[0];	4214	if ($_log_backtrace_last eq $msg) {
1136	$who->message ($_[0]);	4215	LOG llevInfo, "[ABT] $msg\n";
		4216	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4217	# limit the # of concurrent backtraces
		4218	} elsif ($_log_backtrace < 2) {
		4219	$_log_backtrace_last = $msg;
		4220	++$_log_backtrace;
		4221	my $perl_bt = Carp::longmess $msg;
		4222	async {
		4223	$Coro::current->{desc} = "abt $msg";
		4224
		4225	my @bt = fork_call {
		4226	@addr = map { sprintf "%x", $_ } @addr;
		4227	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4228	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4229	or die "addr2line: $!";
		4230
		4231	my @funcs;
		4232	my @res = <$fh>;
		4233	chomp for @res;
		4234	while (@res) {
		4235	my ($func, $line) = splice @res, 0, 2, ();
		4236	push @funcs, "[$func] $line";
		4237	}
		4238
		4239	@funcs
		4240	};
		4241
		4242	LOG llevInfo, "[ABT] $perl_bt\n";
		4243	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4244	LOG llevInfo, "[ABT] $_\n" for @bt;
		4245	--$_log_backtrace;
1137	};	4246	};
1138	}	4247	} else {
1139	};	4248	LOG llevInfo, "[ABT] $msg\n";
1140		4249	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1141	register "<global>", __PACKAGE__;
1142
1143	unshift @INC, $LIBDIR;
1144
1145	$TICK_WATCHER = Event->timer (
1146	prio => 1,
1147	at => $NEXT_TICK || 1,
1148	cb => sub {
1149	cf::server_tick; # one server iteration
1150
1151	my $NOW = Event::time;
1152	$NEXT_TICK += $TICK;
1153
1154	# if we are delayed by four ticks, skip them all
1155	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1156
1157	$TICK_WATCHER->at ($NEXT_TICK);
1158	$TICK_WATCHER->start;
1159	},	4250	}
1160	);	4251	}
		4252
		4253	# load additional modules
		4254	require "cf/$_.pm" for @EXTRA_MODULES;
		4255	cf::_connect_to_perl_2;
		4256
		4257	END { cf::emergency_save }
1161		4258
1162	1	4259	1
1163		4260

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