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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.73 by root, Sun Oct 1 11:46:51 2006 UTC vs.
Revision 1.567 by root, Mon May 2 16:16:00 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
		1960	$path =~ s/$PATH_SEP/\//go;
		1961
		1962	# treat it as relative path if it starts with
		1963	# something that looks reasonable
		1964	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1965	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1966
		1967	$base =~ s{[^/]+/?$}{};
		1968	$path = "$base/$path";
		1969	}
		1970
		1971	for ($path) {
		1972	redo if s{/\.?/}{/};
		1973	redo if s{/[^/]+/\.\./}{/};
		1974	}
		1975
		1976	$path
		1977	}
		1978
		1979	sub new_from_path {
		1980	my (undef, $path, $base) = @_;
		1981
		1982	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1983
		1984	$path = normalise $path, $base;
		1985
		1986	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1987	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1988	my $self = bless cf::map::new, $pkg;
		1989	$self->{path} = $path; $self->path ($path);
		1990	$self->init; # pass $1 etc.
		1991	return $self;
		1992	}
		1993	}
		1994
		1995	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1996	()
		1997	}
		1998
		1999	# may re-bless or do other evil things
		2000	sub init {
		2001	my ($self) = @_;
		2002
		2003	$self
		2004	}
		2005
		2006	sub as_string {
		2007	my ($self) = @_;
		2008
		2009	"$self->{path}"
		2010	}
		2011
		2012	# the displayed name, this is a one way mapping
		2013	sub visible_name {
		2014	&as_string
		2015	}
		2016
		2017	# the original (read-only) location
		2018	sub load_path {
		2019	my ($self) = @_;
		2020
		2021	"$MAPDIR/$self->{path}.map"
		2022	}
		2023
		2024	# the temporary/swap location
		2025	sub save_path {
		2026	my ($self) = @_;
		2027
		2028	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2029	"$TMPDIR/$path.map"
		2030	}
		2031
		2032	# the unique path, undef == no special unique path
		2033	sub uniq_path {
		2034	my ($self) = @_;
		2035
		2036	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2037	"$UNIQUEDIR/$path"
		2038	}
		2039
		2040	sub decay_objects {
		2041	my ($self) = @_;
		2042
		2043	return if $self->{deny_reset};
		2044
		2045	$self->do_decay_objects;
		2046	}
		2047
		2048	sub unlink_save {
		2049	my ($self) = @_;
		2050
		2051	utf8::encode (my $save = $self->save_path);
		2052	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2053	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2054	}
		2055
		2056	sub load_header_from($) {
		2057	my ($self, $path) = @_;
		2058
		2059	utf8::encode $path;
		2060	my $f = new_from_file cf::object::thawer $path
		2061	or return;
		2062
		2063	$self->_load_header ($f)
		2064	or return;
		2065
		2066	local $MAP_LOADING{$self->{path}} = $self;
		2067	$f->resolve_delayed_derefs;
		2068
		2069	$self->{load_path} = $path;
		2070
		2071	1
		2072	}
		2073
		2074	# used to laod the header of an original map
		2075	sub load_header_orig {
		2076	my ($self) = @_;
		2077
		2078	$self->load_header_from ($self->load_path)
		2079	}
		2080
		2081	# used to laod the header of an instantiated map
		2082	sub load_header_temp {
		2083	my ($self) = @_;
		2084
		2085	$self->load_header_from ($self->save_path)
		2086	}
		2087
		2088	# called after loading the header from an instantiated map
		2089	sub prepare_temp {
		2090	my ($self) = @_;
		2091
		2092	$self->last_access ((delete $self->{last_access})
		2093	|| $cf::RUNTIME); #d#
		2094	# safety
		2095	$self->{instantiate_time} = $cf::RUNTIME
		2096	if $self->{instantiate_time} > $cf::RUNTIME;
		2097	}
		2098
		2099	# called after loading the header from an original map
		2100	sub prepare_orig {
		2101	my ($self) = @_;
		2102
		2103	$self->{load_original} = 1;
		2104	$self->{instantiate_time} = $cf::RUNTIME;
		2105	$self->last_access ($cf::RUNTIME);
		2106	$self->instantiate;
		2107	}
		2108
		2109	sub load_header {
		2110	my ($self) = @_;
		2111
		2112	if ($self->load_header_temp) {
		2113	$self->prepare_temp;
		2114	} else {
		2115	$self->load_header_orig
		2116	or return;
		2117	$self->prepare_orig;
		2118	}
		2119
		2120	$self->{deny_reset} = 1
		2121	if $self->no_reset;
		2122
		2123	$self->default_region (cf::region::find_by_path $self->{path})
		2124	unless $self->default_region;
		2125
		2126	1
		2127	}
		2128
		2129	sub find;
		2130	sub find {
		2131	my ($path, $origin) = @_;
		2132
		2133	cf::cede_to_tick;
		2134
		2135	$path = normalise $path, $origin;
		2136
		2137	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2138	my $guard2 = cf::lock_acquire "map_find:$path";
		2139
		2140	$cf::MAP{$path} || do {
		2141	my $map = new_from_path cf::map $path
		2142	or return;
		2143
		2144	$map->{last_save} = $cf::RUNTIME;
		2145
		2146	$map->load_header
		2147	or return;
		2148
		2149	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2150	# doing this can freeze the server in a sync job, obviously
		2151	#$cf::WAIT_FOR_TICK->wait;
		2152	undef $guard2;
		2153	undef $guard1;
		2154	$map->reset;
		2155	return find $path;
		2156	}
		2157
		2158	$cf::MAP{$path} = $map
		2159	}
		2160	}
		2161
		2162	sub pre_load { }
		2163	#sub post_load { } # XS
		2164
		2165	sub load {
		2166	my ($self) = @_;
		2167
		2168	local $self->{deny_reset} = 1; # loading can take a long time
		2169
		2170	my $path = $self->{path};
		2171
		2172	{
		2173	my $guard = cf::lock_acquire "map_data:$path";
		2174
		2175	return unless $self->valid;
		2176	return unless $self->in_memory == cf::MAP_SWAPPED;
		2177
		2178	$self->in_memory (cf::MAP_LOADING);
		2179
		2180	$self->alloc;
		2181
		2182	$self->pre_load;
		2183	cf::cede_to_tick;
		2184
		2185	if (exists $self->{load_path}) {
		2186	my $f = new_from_file cf::object::thawer $self->{load_path};
		2187	$f->skip_block;
		2188	$self->_load_objects ($f)
		2189	or return;
		2190
		2191	$self->post_load_original
		2192	if delete $self->{load_original};
		2193
		2194	if (my $uniq = $self->uniq_path) {
		2195	utf8::encode $uniq;
		2196	unless (aio_stat $uniq) {
		2197	if (my $f = new_from_file cf::object::thawer $uniq) {
		2198	$self->clear_unique_items;
		2199	$self->_load_objects ($f);
		2200	$f->resolve_delayed_derefs;
		2201	}
		2202	}
751	}	2203	}
		2204
		2205	$f->resolve_delayed_derefs;
		2206	} else {
		2207	$self->post_load_original
		2208	if delete $self->{load_original};
752	}	2209	}
		2210
		2211	cf::cede_to_tick;
		2212	# now do the right thing for maps
		2213	$self->link_multipart_objects;
		2214	$self->difficulty ($self->estimate_difficulty)
		2215	unless $self->difficulty;
		2216	cf::cede_to_tick;
		2217
		2218	unless ($self->{deny_activate}) {
		2219	$self->decay_objects;
		2220	$self->fix_auto_apply;
		2221	$self->update_buttons;
		2222	cf::cede_to_tick;
		2223	$self->activate;
		2224	}
		2225
		2226	$self->{last_save} = $cf::RUNTIME;
		2227	$self->last_access ($cf::RUNTIME);
		2228
		2229	$self->in_memory (cf::MAP_ACTIVE);
753	},	2230	}
754	;
755		2231
756	#############################################################################	2232	$self->post_load;
757		2233
758	=head2 CORE EXTENSIONS	2234	1
		2235	}
759		2236
760	Functions and methods that extend core crossfire objects.	2237	# customize the map for a given player, i.e.
		2238	# return the _real_ map. used by e.g. per-player
		2239	# maps to change the path to ~playername/mappath
		2240	sub customise_for {
		2241	my ($self, $ob) = @_;
		2242
		2243	return find "~" . $ob->name . "/" . $self->{path}
		2244	if $self->per_player;
		2245
		2246	# return find "?party/" . $ob->name . "/" . $self->{path}
		2247	# if $self->per_party;
		2248
		2249	$self
		2250	}
		2251
		2252	# find and load all maps in the 3x3 area around a map
		2253	sub load_neighbours {
		2254	my ($map) = @_;
		2255
		2256	my @neigh; # diagonal neighbours
		2257
		2258	for (0 .. 3) {
		2259	my $neigh = $map->tile_path ($_)
		2260	or next;
		2261	$neigh = find $neigh, $map
		2262	or next;
		2263	$neigh->load;
		2264
		2265	# now find the diagonal neighbours
		2266	push @neigh,
		2267	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2268	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2269	}
		2270
		2271	for (grep defined $_->[0], @neigh) {
		2272	my ($path, $origin) = @$_;
		2273	my $neigh = find $path, $origin
		2274	or next;
		2275	$neigh->load;
		2276	}
		2277	}
		2278
		2279	sub find_sync {
		2280	my ($path, $origin) = @_;
		2281
		2282	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2283	if $Coro::current == $Coro::main;
		2284
		2285	find $path, $origin
		2286	}
		2287
		2288	sub do_load_sync {
		2289	my ($map) = @_;
		2290
		2291	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2292	if $Coro::current == $Coro::main;
		2293
		2294	$map->load;
		2295	}
		2296
		2297	our %MAP_PREFETCH;
		2298	our $MAP_PREFETCHER = undef;
		2299
		2300	sub find_async {
		2301	my ($path, $origin, $load) = @_;
		2302
		2303	$path = normalise $path, $origin;
		2304
		2305	if (my $map = $cf::MAP{$path}) {
		2306	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2307	}
		2308
		2309	$MAP_PREFETCH{$path} |= $load;
		2310
		2311	$MAP_PREFETCHER ||= cf::async {
		2312	$Coro::current->{desc} = "map prefetcher";
		2313
		2314	while (%MAP_PREFETCH) {
		2315	while (my ($k, $v) = each %MAP_PREFETCH) {
		2316	if (my $map = find $k) {
		2317	$map->load if $v;
		2318	}
		2319
		2320	delete $MAP_PREFETCH{$k};
		2321	}
		2322	}
		2323	undef $MAP_PREFETCHER;
		2324	};
		2325	$MAP_PREFETCHER->prio (6);
		2326
		2327	()
		2328	}
		2329
		2330	# common code, used by both ->save and ->swapout
		2331	sub _save {
		2332	my ($self) = @_;
		2333
		2334	$self->{last_save} = $cf::RUNTIME;
		2335
		2336	return unless $self->dirty;
		2337
		2338	my $save = $self->save_path; utf8::encode $save;
		2339	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2340
		2341	$self->{load_path} = $save;
		2342
		2343	return if $self->{deny_save};
		2344
		2345	local $self->{last_access} = $self->last_access;#d#
		2346
		2347	cf::async {
		2348	$Coro::current->{desc} = "map player save";
		2349	$_->contr->save for $self->players;
		2350	};
		2351
		2352	cf::get_slot 0.02;
		2353
		2354	if ($uniq) {
		2355	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2356	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2357	} else {
		2358	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2359	}
		2360	}
		2361
		2362	sub save {
		2363	my ($self) = @_;
		2364
		2365	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2366
		2367	$self->_save;
		2368	}
		2369
		2370	sub swap_out {
		2371	my ($self) = @_;
		2372
		2373	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2374
		2375	return if $self->in_memory != cf::MAP_ACTIVE;
		2376	return if $self->{deny_save};
		2377	return if $self->players;
		2378
		2379	# first deactivate the map and "unlink" it from the core
		2380	$self->deactivate;
		2381	$_->clear_links_to ($self) for values %cf::MAP;
		2382	$self->in_memory (cf::MAP_SWAPPED);
		2383
		2384	# then atomically save
		2385	$self->_save;
		2386
		2387	# then free the map
		2388	$self->clear;
		2389	}
		2390
		2391	sub reset_at {
		2392	my ($self) = @_;
		2393
		2394	# TODO: safety, remove and allow resettable per-player maps
		2395	return 1e99 if $self->{deny_reset};
		2396
		2397	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2398	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2399
		2400	$time + $to
		2401	}
		2402
		2403	sub should_reset {
		2404	my ($self) = @_;
		2405
		2406	$self->reset_at <= $cf::RUNTIME
		2407	}
		2408
		2409	sub reset {
		2410	my ($self) = @_;
		2411
		2412	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2413
		2414	return if $self->players;
		2415
		2416	cf::trace "resetting map ", $self->path, "\n";
		2417
		2418	$self->in_memory (cf::MAP_SWAPPED);
		2419
		2420	# need to save uniques path
		2421	unless ($self->{deny_save}) {
		2422	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2423
		2424	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2425	if $uniq;
		2426	}
		2427
		2428	delete $cf::MAP{$self->path};
		2429
		2430	$self->deactivate;
		2431	$_->clear_links_to ($self) for values %cf::MAP;
		2432	$self->clear;
		2433
		2434	$self->unlink_save;
		2435	$self->destroy;
		2436	}
		2437
		2438	my $nuke_counter = "aaaa";
		2439
		2440	sub nuke {
		2441	my ($self) = @_;
		2442
		2443	{
		2444	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2445
		2446	delete $cf::MAP{$self->path};
		2447
		2448	$self->unlink_save;
		2449
		2450	bless $self, "cf::map::wrap";
		2451	delete $self->{deny_reset};
		2452	$self->{deny_save} = 1;
		2453	$self->reset_timeout (1);
		2454	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2455
		2456	$cf::MAP{$self->path} = $self;
		2457	}
		2458
		2459	$self->reset; # polite request, might not happen
		2460	}
		2461
		2462	=item $maps = cf::map::tmp_maps
		2463
		2464	Returns an arrayref with all map paths of currently instantiated and saved
		2465	maps. May block.
		2466
		2467	=cut
		2468
		2469	sub tmp_maps() {
		2470	[
		2471	map {
		2472	utf8::decode $_;
		2473	/\.map$/
		2474	? normalise $_
		2475	: ()
		2476	} @{ aio_readdir $TMPDIR or [] }
		2477	]
		2478	}
		2479
		2480	=item $maps = cf::map::random_maps
		2481
		2482	Returns an arrayref with all map paths of currently instantiated and saved
		2483	random maps. May block.
		2484
		2485	=cut
		2486
		2487	sub random_maps() {
		2488	[
		2489	map {
		2490	utf8::decode $_;
		2491	/\.map$/
		2492	? normalise "?random/$_"
		2493	: ()
		2494	} @{ aio_readdir $RANDOMDIR or [] }
		2495	]
		2496	}
		2497
		2498	=item cf::map::unique_maps
		2499
		2500	Returns an arrayref of paths of all shared maps that have
		2501	instantiated unique items. May block.
		2502
		2503	=cut
		2504
		2505	sub unique_maps() {
		2506	[
		2507	map {
		2508	utf8::decode $_;
		2509	s/\.map$//; # TODO future compatibility hack
		2510	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2511	? ()
		2512	: normalise $_
		2513	} @{ aio_readdir $UNIQUEDIR or [] }
		2514	]
		2515	}
		2516
		2517	=item cf::map::static_maps
		2518
		2519	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2520	file in the shared directory excluding F</styles> and F</editor>). May
		2521	block.
		2522
		2523	=cut
		2524
		2525	sub static_maps() {
		2526	my @dirs = "";
		2527	my @maps;
		2528
		2529	while (@dirs) {
		2530	my $dir = shift @dirs;
		2531
		2532	next if $dir eq "/styles" || $dir eq "/editor";
		2533
		2534	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2535	or return;
		2536
		2537	for (@$files) {
		2538	s/\.map$// or next;
		2539	utf8::decode $_;
		2540	push @maps, "$dir/$_";
		2541	}
		2542
		2543	push @dirs, map "$dir/$_", @$dirs;
		2544	}
		2545
		2546	\@maps
		2547	}
		2548
		2549	=back
		2550
		2551	=head3 cf::object
		2552
		2553	=cut
		2554
		2555	package cf::object;
761		2556
762	=over 4	2557	=over 4
763		2558
764	=item cf::player::exists $login	2559	=item $ob->inv_recursive
765		2560
766	Returns true when the given account exists.	2561	Returns the inventory of the object I<and> their inventories, recursively,
		2562	but I<not> the object itself.
767		2563
768	=cut	2564	=cut
769		2565
770	sub cf::player::exists($) {	2566	sub inv_recursive_;
771	cf::player::find $_[0]	2567	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2568	map { $_, inv_recursive_ $_->inv } @_
773	}	2569	}
774		2570
		2571	sub inv_recursive {
		2572	inv_recursive_ inv $_[0]
		2573	}
		2574
		2575	=item $ref = $ob->ref
		2576
		2577	Creates and returns a persistent reference to an object that can be stored as a string.
		2578
		2579	=item $ob = cf::object::deref ($refstring)
		2580
		2581	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2582	even if the object actually exists. May block.
		2583
		2584	=cut
		2585
		2586	sub deref {
		2587	my ($ref) = @_;
		2588
		2589	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2590	my ($uuid, $name) = ($1, $2);
		2591	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2592	or return;
		2593	$pl->ob->uuid eq $uuid
		2594	or return;
		2595
		2596	$pl->ob
		2597	} else {
		2598	warn "$ref: cannot resolve object reference\n";
		2599	undef
		2600	}
		2601	}
		2602
		2603	package cf;
		2604
		2605	=back
		2606
		2607	=head3 cf::object::player
		2608
		2609	=over 4
		2610
775	=item $player->reply ($npc, $msg[, $flags])	2611	=item $player_object->reply ($npc, $msg[, $flags])
776		2612
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2613	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	2614	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	2615	dialogue with the given NPC character.
780		2616
781	=cut	2617	=cut
782		2618
		2619	our $SAY_CHANNEL = {
		2620	id => "say",
		2621	title => "Map",
		2622	reply => "say ",
		2623	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2624	};
		2625
		2626	our $CHAT_CHANNEL = {
		2627	id => "chat",
		2628	title => "Chat",
		2629	reply => "chat ",
		2630	tooltip => "Player chat and shouts, global to the server.",
		2631	};
		2632
783	# rough implementation of a future "reply" method that works	2633	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	2634	# with dialog boxes.
		2635	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	2636	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	2637	my ($self, $npc, $msg, $flags) = @_;
787		2638
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2639	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		2640
790	if ($self->{record_replies}) {	2641	if ($self->{record_replies}) {
791	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2642	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2643
792	} else {	2644	} else {
		2645	my $pl = $self->contr;
		2646
		2647	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2648	my $dialog = $pl->{npc_dialog};
		2649	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2650
		2651	} else {
793	$msg = $npc->name . " says: $msg" if $npc;	2652	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	2653	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2654	}
		2655	}
		2656	}
		2657
		2658	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2659
		2660	=cut
		2661
		2662	sub cf::object::send_msg {
		2663	my $pl = shift->contr
		2664	or return;
		2665	$pl->send_msg (@_);
		2666	}
		2667
		2668	=item $player_object->may ("access")
		2669
		2670	Returns wether the given player is authorized to access resource "access"
		2671	(e.g. "command_wizcast").
		2672
		2673	=cut
		2674
		2675	sub cf::object::player::may {
		2676	my ($self, $access) = @_;
		2677
		2678	$self->flag (cf::FLAG_WIZ) ||
		2679	(ref $cf::CFG{"may_$access"}
		2680	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2681	: $cf::CFG{"may_$access"})
		2682	}
		2683
		2684	=item $player_object->enter_link
		2685
		2686	Freezes the player and moves him/her to a special map (C<{link}>).
		2687
		2688	The player should be reasonably safe there for short amounts of time (e.g.
		2689	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2690	though, as the player cannot control the character while it is on the link
		2691	map.
		2692
		2693	Will never block.
		2694
		2695	=item $player_object->leave_link ($map, $x, $y)
		2696
		2697	Moves the player out of the special C<{link}> map onto the specified
		2698	map. If the map is not valid (or omitted), the player will be moved back
		2699	to the location he/she was before the call to C<enter_link>, or, if that
		2700	fails, to the emergency map position.
		2701
		2702	Might block.
		2703
		2704	=cut
		2705
		2706	sub link_map {
		2707	unless ($LINK_MAP) {
		2708	$LINK_MAP = cf::map::find "{link}"
		2709	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2710	$LINK_MAP->load;
		2711	}
		2712
		2713	$LINK_MAP
		2714	}
		2715
		2716	sub cf::object::player::enter_link {
		2717	my ($self) = @_;
		2718
		2719	$self->deactivate_recursive;
		2720
		2721	++$self->{_link_recursion};
		2722
		2723	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2724
		2725	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2726	if $self->map && $self->map->{path} ne "{link}";
		2727
		2728	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2729	}
		2730
		2731	sub cf::object::player::leave_link {
		2732	my ($self, $map, $x, $y) = @_;
		2733
		2734	return unless $self->contr->active;
		2735
		2736	my $link_pos = delete $self->{_link_pos};
		2737
		2738	unless ($map) {
		2739	# restore original map position
		2740	($map, $x, $y) = @{ $link_pos || [] };
		2741	$map = cf::map::find $map;
		2742
		2743	unless ($map) {
		2744	($map, $x, $y) = @$EMERGENCY_POSITION;
		2745	$map = cf::map::find $map
		2746	or die "FATAL: cannot load emergency map\n";
		2747	}
		2748	}
		2749
		2750	($x, $y) = (-1, -1)
		2751	unless (defined $x) && (defined $y);
		2752
		2753	# use -1 or undef as default coordinates, not 0, 0
		2754	($x, $y) = ($map->enter_x, $map->enter_y)
		2755	if $x <= 0 && $y <= 0;
		2756
		2757	$map->load;
		2758	$map->load_neighbours;
		2759
		2760	return unless $self->contr->active;
		2761
		2762	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2763	if ($self->enter_map ($map, $x, $y)) {
		2764	# entering was successful
		2765	delete $self->{_link_recursion};
		2766	# only activate afterwards, to support waiting in hooks
		2767	$self->activate_recursive;
		2768	}
		2769
		2770	}
		2771
		2772	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2773
		2774	Moves the player to the given map-path and coordinates by first freezing
		2775	her, loading and preparing them map, calling the provided $check callback
		2776	that has to return the map if sucecssful, and then unfreezes the player on
		2777	the new (success) or old (failed) map position. In either case, $done will
		2778	be called at the end of this process.
		2779
		2780	Note that $check will be called with a potentially non-loaded map, so if
		2781	it needs a loaded map it has to call C<< ->load >>.
		2782
		2783	=cut
		2784
		2785	our $GOTOGEN;
		2786
		2787	sub cf::object::player::goto {
		2788	my ($self, $path, $x, $y, $check, $done) = @_;
		2789
		2790	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2791	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2792	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2793	($path, $x, $y) = @$EMERGENCY_POSITION;
		2794	}
		2795
		2796	# do generation counting so two concurrent goto's will be executed in-order
		2797	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2798
		2799	$self->enter_link;
		2800
		2801	(async {
		2802	$Coro::current->{desc} = "player::goto $path $x $y";
		2803
		2804	# *tag paths override both path and x|y
		2805	if ($path =~ /^\*(.*)$/) {
		2806	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2807	my $ob = $obs[rand @obs];
		2808
		2809	# see if we actually can go there
		2810	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2811	$ob = $obs[rand @obs];
		2812	} else {
		2813	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2814	}
		2815	# else put us there anyways for now #d#
		2816
		2817	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2818	} else {
		2819	($path, $x, $y) = (undef, undef, undef);
		2820	}
		2821	}
		2822
		2823	my $map = eval {
		2824	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2825
		2826	if ($map) {
		2827	$map = $map->customise_for ($self);
		2828	$map = $check->($map, $x, $y, $self) if $check && $map;
		2829	} else {
		2830	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2831	}
		2832
		2833	$map
		2834	};
		2835
		2836	if ($@) {
		2837	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2838	LOG llevError | logBacktrace, Carp::longmess $@;
		2839	}
		2840
		2841	if ($gen == $self->{_goto_generation}) {
		2842	delete $self->{_goto_generation};
		2843	$self->leave_link ($map, $x, $y);
		2844	}
		2845
		2846	$done->($self) if $done;
		2847	})->prio (1);
		2848	}
		2849
		2850	=item $player_object->enter_exit ($exit_object)
		2851
		2852	=cut
		2853
		2854	sub parse_random_map_params {
		2855	my ($spec) = @_;
		2856
		2857	my $rmp = { # defaults
		2858	xsize => (cf::rndm 15, 40),
		2859	ysize => (cf::rndm 15, 40),
		2860	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2861	#layout => string,
795	}	2862	};
796	}
797		2863
		2864	for (split /\n/, $spec) {
		2865	my ($k, $v) = split /\s+/, $_, 2;
		2866
		2867	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2868	}
		2869
		2870	$rmp
		2871	}
		2872
		2873	sub prepare_random_map {
		2874	my ($exit) = @_;
		2875
		2876	# all this does is basically replace the /! path by
		2877	# a new random map path (?random/...) with a seed
		2878	# that depends on the exit object
		2879
		2880	my $rmp = parse_random_map_params $exit->msg;
		2881
		2882	if ($exit->map) {
		2883	$rmp->{region} = $exit->region->name;
		2884	$rmp->{origin_map} = $exit->map->path;
		2885	$rmp->{origin_x} = $exit->x;
		2886	$rmp->{origin_y} = $exit->y;
		2887
		2888	$exit->map->touch;
		2889	}
		2890
		2891	$rmp->{random_seed} ||= $exit->random_seed;
		2892
		2893	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2894	my $md5 = Digest::MD5::md5_hex $data;
		2895	my $meta = "$RANDOMDIR/$md5.meta";
		2896
		2897	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2898	aio_write $fh, 0, (length $data), $data, 0;
		2899	undef $fh;
		2900	aio_rename "$meta~", $meta;
		2901
		2902	my $slaying = "?random/$md5";
		2903
		2904	if ($exit->valid) {
		2905	$exit->slaying ("?random/$md5");
		2906	$exit->msg (undef);
		2907	}
		2908	}
		2909	}
		2910
		2911	sub cf::object::player::enter_exit {
		2912	my ($self, $exit) = @_;
		2913
		2914	return unless $self->type == cf::PLAYER;
		2915
		2916	$self->enter_link;
		2917
		2918	(async {
		2919	$Coro::current->{desc} = "enter_exit";
		2920
		2921	unless (eval {
		2922	$self->deactivate_recursive; # just to be sure
		2923
		2924	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2925	my $x = $exit->stats->hp;
		2926	my $y = $exit->stats->sp;
		2927
		2928	# special map handling
		2929	my $slaying = $exit->slaying;
		2930
		2931	# special map handling
		2932	if ($slaying eq "/!") {
		2933	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2934
		2935	prepare_random_map $exit
		2936	if $slaying eq "/!"; # need to re-check after getting the lock
		2937
		2938	} elsif ($slaying eq '!up') {
		2939	$map = $exit->map->tile_path (cf::TILE_UP);
		2940	$x = $exit->x;
		2941	$y = $exit->y;
		2942
		2943	} elsif ($slaying eq '!down') {
		2944	$map = $exit->map->tile_path (cf::TILE_DOWN);
		2945	$x = $exit->x;
		2946	$y = $exit->y;
		2947	}
		2948
		2949	$self->goto ($map, $x, $y);
		2950
		2951	# if exit is damned, update players death & WoR home-position
		2952	$self->contr->savebed ($map, $x, $y)
		2953	if $exit->flag (cf::FLAG_DAMNED);
		2954
		2955	1
		2956	}) {
		2957	$self->message ("Something went wrong deep within the deliantra server. "
		2958	. "I'll try to bring you back to the map you were before. "
		2959	. "Please report this to the dungeon master!",
		2960	cf::NDI_UNIQUE | cf::NDI_RED);
		2961
		2962	error "ERROR in enter_exit: $@";
		2963	$self->leave_link;
		2964	}
		2965	})->prio (1);
		2966	}
		2967
		2968	=head3 cf::client
		2969
		2970	=over 4
		2971
		2972	=item $client->send_drawinfo ($text, $flags)
		2973
		2974	Sends a drawinfo packet to the client. Circumvents output buffering so
		2975	should not be used under normal circumstances.
		2976
		2977	=cut
		2978
		2979	sub cf::client::send_drawinfo {
		2980	my ($self, $text, $flags) = @_;
		2981
		2982	utf8::encode $text;
		2983	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2984	}
		2985
		2986	=item $client->send_big_packet ($pkt)
		2987
		2988	Like C<send_packet>, but tries to compress large packets, and fragments
		2989	them as required.
		2990
		2991	=cut
		2992
		2993	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2994
		2995	sub cf::client::send_big_packet {
		2996	my ($self, $pkt) = @_;
		2997
		2998	# try lzf for large packets
		2999	$pkt = "lzf " . Compress::LZF::compress $pkt
		3000	if 1024 <= length $pkt and $self->{can_lzf};
		3001
		3002	# split very large packets
		3003	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3004	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3005	$pkt = "frag";
		3006	}
		3007
		3008	$self->send_packet ($pkt);
		3009	}
		3010
		3011	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3012
		3013	Send a drawinfo or msg packet to the client, formatting the msg for the
		3014	client if neccessary. C<$type> should be a string identifying the type of
		3015	the message, with C<log> being the default. If C<$color> is negative, suppress
		3016	the message unless the client supports the msg packet.
		3017
		3018	=cut
		3019
		3020	# non-persistent channels (usually the info channel)
		3021	our %CHANNEL = (
		3022	"c/motd" => {
		3023	id => "infobox",
		3024	title => "MOTD",
		3025	reply => undef,
		3026	tooltip => "The message of the day",
		3027	},
		3028	"c/identify" => {
		3029	id => "infobox",
		3030	title => "Identify",
		3031	reply => undef,
		3032	tooltip => "Items recently identified",
		3033	},
		3034	"c/examine" => {
		3035	id => "infobox",
		3036	title => "Examine",
		3037	reply => undef,
		3038	tooltip => "Signs and other items you examined",
		3039	},
		3040	"c/shopinfo" => {
		3041	id => "infobox",
		3042	title => "Shop Info",
		3043	reply => undef,
		3044	tooltip => "What your bargaining skill tells you about the shop",
		3045	},
		3046	"c/book" => {
		3047	id => "infobox",
		3048	title => "Book",
		3049	reply => undef,
		3050	tooltip => "The contents of a note or book",
		3051	},
		3052	"c/lookat" => {
		3053	id => "infobox",
		3054	title => "Look",
		3055	reply => undef,
		3056	tooltip => "What you saw there",
		3057	},
		3058	"c/who" => {
		3059	id => "infobox",
		3060	title => "Players",
		3061	reply => undef,
		3062	tooltip => "Shows players who are currently online",
		3063	},
		3064	"c/body" => {
		3065	id => "infobox",
		3066	title => "Body Parts",
		3067	reply => undef,
		3068	tooltip => "Shows which body parts you posess and are available",
		3069	},
		3070	"c/statistics" => {
		3071	id => "infobox",
		3072	title => "Statistics",
		3073	reply => undef,
		3074	tooltip => "Shows your primary statistics",
		3075	},
		3076	"c/skills" => {
		3077	id => "infobox",
		3078	title => "Skills",
		3079	reply => undef,
		3080	tooltip => "Shows your experience per skill and item power",
		3081	},
		3082	"c/shopitems" => {
		3083	id => "infobox",
		3084	title => "Shop Items",
		3085	reply => undef,
		3086	tooltip => "Shows the items currently for sale in this shop",
		3087	},
		3088	"c/resistances" => {
		3089	id => "infobox",
		3090	title => "Resistances",
		3091	reply => undef,
		3092	tooltip => "Shows your resistances",
		3093	},
		3094	"c/pets" => {
		3095	id => "infobox",
		3096	title => "Pets",
		3097	reply => undef,
		3098	tooltip => "Shows information abotu your pets/a specific pet",
		3099	},
		3100	"c/perceiveself" => {
		3101	id => "infobox",
		3102	title => "Perceive Self",
		3103	reply => undef,
		3104	tooltip => "You gained detailed knowledge about yourself",
		3105	},
		3106	"c/uptime" => {
		3107	id => "infobox",
		3108	title => "Uptime",
		3109	reply => undef,
		3110	tooltip => "How long the server has been running since last restart",
		3111	},
		3112	"c/mapinfo" => {
		3113	id => "infobox",
		3114	title => "Map Info",
		3115	reply => undef,
		3116	tooltip => "Information related to the maps",
		3117	},
		3118	"c/party" => {
		3119	id => "party",
		3120	title => "Party",
		3121	reply => "gsay ",
		3122	tooltip => "Messages and chat related to your party",
		3123	},
		3124	"c/death" => {
		3125	id => "death",
		3126	title => "Death",
		3127	reply => undef,
		3128	tooltip => "Reason for and more info about your most recent death",
		3129	},
		3130	"c/say" => $SAY_CHANNEL,
		3131	"c/chat" => $CHAT_CHANNEL,
		3132	);
		3133
		3134	sub cf::client::send_msg {
		3135	my ($self, $channel, $msg, $color, @extra) = @_;
		3136
		3137	$msg = $self->pl->expand_cfpod ($msg)
		3138	unless $color & cf::NDI_VERBATIM;
		3139
		3140	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3141
		3142	# check predefined channels, for the benefit of C
		3143	if ($CHANNEL{$channel}) {
		3144	$channel = $CHANNEL{$channel};
		3145
		3146	$self->ext_msg (channel_info => $channel);
		3147	$channel = $channel->{id};
		3148
		3149	} elsif (ref $channel) {
		3150	# send meta info to client, if not yet sent
		3151	unless (exists $self->{channel}{$channel->{id}}) {
		3152	$self->{channel}{$channel->{id}} = $channel;
		3153	$self->ext_msg (channel_info => $channel);
		3154	}
		3155
		3156	$channel = $channel->{id};
		3157	}
		3158
		3159	return unless @extra || length $msg;
		3160
		3161	# default colour, mask it out
		3162	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3163	if $color & cf::NDI_DEF;
		3164
		3165	my $pkt = "msg "
		3166	. $self->{json_coder}->encode (
		3167	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3168	);
		3169
		3170	$self->send_big_packet ($pkt);
		3171	}
		3172
		3173	=item $client->ext_msg ($type, @msg)
		3174
		3175	Sends an ext event to the client.
		3176
		3177	=cut
		3178
		3179	sub cf::client::ext_msg($$@) {
		3180	my ($self, $type, @msg) = @_;
		3181
		3182	if ($self->extcmd == 2) {
		3183	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3184	} elsif ($self->extcmd == 1) { # TODO: remove
		3185	push @msg, msgtype => "event_$type";
		3186	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3187	}
		3188	}
		3189
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	3190	=item $client->ext_reply ($msgid, @msg)
799		3191
800	Sends an ext reply to the player.	3192	Sends an ext reply to the client.
801		3193
802	=cut	3194	=cut
803		3195
804	sub cf::player::ext_reply($$$%) {	3196	sub cf::client::ext_reply($$@) {
805	my ($self, $id, %msg) = @_;	3197	my ($self, $id, @msg) = @_;
806		3198
807	$msg{msgid} = $id;	3199	if ($self->extcmd == 2) {
808		3200	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
809	$self->send ("ext " . to_json \%msg);	3201	} elsif ($self->extcmd == 1) {
		3202	#TODO: version 1, remove
		3203	unshift @msg, msgtype => "reply", msgid => $id;
		3204	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3205	}
810	}	3206	}
		3207
		3208	=item $success = $client->query ($flags, "text", \&cb)
		3209
		3210	Queues a query to the client, calling the given callback with
		3211	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3212	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3213
		3214	Queries can fail, so check the return code. Or don't, as queries will
		3215	become reliable at some point in the future.
		3216
		3217	=cut
		3218
		3219	sub cf::client::query {
		3220	my ($self, $flags, $text, $cb) = @_;
		3221
		3222	return unless $self->state == ST_PLAYING
		3223	|| $self->state == ST_SETUP
		3224	|| $self->state == ST_CUSTOM;
		3225
		3226	$self->state (ST_CUSTOM);
		3227
		3228	utf8::encode $text;
		3229	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3230
		3231	$self->send_packet ($self->{query_queue}[0][0])
		3232	if @{ $self->{query_queue} } == 1;
		3233
		3234	1
		3235	}
		3236
		3237	cf::client->attach (
		3238	on_connect => sub {
		3239	my ($ns) = @_;
		3240
		3241	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3242	},
		3243	on_reply => sub {
		3244	my ($ns, $msg) = @_;
		3245
		3246	# this weird shuffling is so that direct followup queries
		3247	# get handled first
		3248	my $queue = delete $ns->{query_queue}
		3249	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3250
		3251	(shift @$queue)->[1]->($msg);
		3252	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3253
		3254	push @{ $ns->{query_queue} }, @$queue;
		3255
		3256	if (@{ $ns->{query_queue} } == @$queue) {
		3257	if (@$queue) {
		3258	$ns->send_packet ($ns->{query_queue}[0][0]);
		3259	} else {
		3260	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3261	}
		3262	}
		3263	},
		3264	on_exticmd => sub {
		3265	my ($ns, $buf) = @_;
		3266
		3267	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3268
		3269	if (ref $msg) {
		3270	my ($type, $reply, @payload) =
		3271	"ARRAY" eq ref $msg
		3272	? @$msg
		3273	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3274
		3275	my @reply;
		3276
		3277	if (my $cb = $EXTICMD{$type}) {
		3278	@reply = $cb->($ns, @payload);
		3279	}
		3280
		3281	$ns->ext_reply ($reply, @reply)
		3282	if $reply;
		3283
		3284	} else {
		3285	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3286	}
		3287
		3288	cf::override;
		3289	},
		3290	);
		3291
		3292	=item $client->async (\&cb)
		3293
		3294	Create a new coroutine, running the specified callback. The coroutine will
		3295	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3296	or loss of connection).
		3297
		3298	=cut
		3299
		3300	sub cf::client::async {
		3301	my ($self, $cb) = @_;
		3302
		3303	my $coro = &Coro::async ($cb);
		3304
		3305	$coro->on_destroy (sub {
		3306	delete $self->{_coro}{$coro+0};
		3307	});
		3308
		3309	$self->{_coro}{$coro+0} = $coro;
		3310
		3311	$coro
		3312	}
		3313
		3314	cf::client->attach (
		3315	on_client_destroy => sub {
		3316	my ($ns) = @_;
		3317
		3318	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3319	},
		3320	);
811		3321
812	=back	3322	=back
813		3323
814	=cut
815
816	#############################################################################
817		3324
818	=head2 SAFE SCRIPTING	3325	=head2 SAFE SCRIPTING
819		3326
820	Functions that provide a safe environment to compile and execute	3327	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	3328	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	3329	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	3330	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	3331	functions and methods that can be called is greatly reduced.
825		3332
826	=cut	3333	=cut
827		3334
828	our $safe = new Safe "safe";	3335	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	3336	our $safe_hole = new Safe::Hole;
830		3337
831	$SIG{FPE} = 'IGNORE';	3338	$SIG{FPE} = 'IGNORE';
832		3339
833	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3340	$safe->permit_only (Opcode::opset qw(
		3341	:base_core :base_mem :base_orig :base_math :base_loop
		3342	grepstart grepwhile mapstart mapwhile
		3343	sort time
		3344	));
834		3345
835	# here we export the classes and methods available to script code	3346	# here we export the classes and methods available to script code
836		3347
837	=pod	3348	=pod
838		3349
839	The following fucntions and emthods are available within a safe environment:	3350	The following functions and methods are available within a safe environment:
840		3351
841	cf::object contr pay_amount pay_player	3352	cf::object
		3353	contr pay_amount pay_player map x y force_find force_add destroy
		3354	insert remove name archname title slaying race decrease split
		3355	value
		3356
842	cf::object::player player	3357	cf::object::player
843	cf::player peaceful	3358	player
		3359
		3360	cf::player
		3361	peaceful
		3362
		3363	cf::map
		3364	trigger
844		3365
845	=cut	3366	=cut
846		3367
847	for (	3368	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	3369	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3370	insert remove inv nrof name archname title slaying race
		3371	decrease split destroy change_exp value msg lore send_msg)],
849	["cf::object::player" => qw(player)],	3372	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	3373	["cf::player" => qw(peaceful send_msg)],
		3374	["cf::map" => qw(trigger)],
851	) {	3375	) {
852	no strict 'refs';
853	my ($pkg, @funs) = @$_;	3376	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3377	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	3378	for @funs;
856	}	3379	}
857		3380
…		…
872		3395
873	my $qcode = $code;	3396	my $qcode = $code;
874	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3397	$qcode =~ s/"/‟/g; # not allowed in #line filenames
875	$qcode =~ s/\n/\\n/g;	3398	$qcode =~ s/\n/\\n/g;
876		3399
		3400	%vars = (_dummy => 0) unless %vars;
		3401
		3402	my @res;
877	local $_;	3403	local $_;
878	local @safe::cf::_safe_eval_args = values %vars;
879		3404
880	my $eval =	3405	my $eval =
881	"do {\n"	3406	"do {\n"
882	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3407	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
883	. "#line 0 \"{$qcode}\"\n"	3408	. "#line 0 \"{$qcode}\"\n"
884	. $code	3409	. $code
885	. "\n}"	3410	. "\n}"
886	;	3411	;
887		3412
		3413	if ($CFG{safe_eval}) {
888	sub_generation_inc;	3414	sub_generation_inc;
		3415	local @safe::cf::_safe_eval_args = values %vars;
889	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3416	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
890	sub_generation_inc;	3417	sub_generation_inc;
		3418	} else {
		3419	local @cf::_safe_eval_args = values %vars;
		3420	@res = wantarray ? eval eval : scalar eval $eval;
		3421	}
891		3422
892	if ($@) {	3423	if ($@) {
893	warn "$@";	3424	warn "$@",
894	warn "while executing safe code '$code'\n";	3425	"while executing safe code '$code'\n",
895	warn "with arguments " . (join " ", %vars) . "\n";	3426	"with arguments " . (join " ", %vars) . "\n";
896	}	3427	}
897		3428
898	wantarray ? @res : $res[0]	3429	wantarray ? @res : $res[0]
899	}	3430	}
900		3431
…		…
914	=cut	3445	=cut
915		3446
916	sub register_script_function {	3447	sub register_script_function {
917	my ($fun, $cb) = @_;	3448	my ($fun, $cb) = @_;
918		3449
919	no strict 'refs';	3450	$fun = "safe::$fun" if $CFG{safe_eval};
920	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3451	*$fun = $safe_hole->wrap ($cb);
921	}	3452	}
922		3453
923	=back	3454	=back
924		3455
925	=cut	3456	=cut
926		3457
927	#############################################################################	3458	#############################################################################
		3459	# the server's init and main functions
928		3460
929	=head2 EXTENSION DATABASE SUPPORT	3461	sub load_facedata($) {
		3462	my ($path) = @_;
930		3463
931	Crossfire maintains a very simple database for extension use. It can	3464	# HACK to clear player env face cache, we need some signal framework
932	currently store anything that can be serialised using Storable, which	3465	# for this (global event?)
933	excludes objects.	3466	%ext::player_env::MUSIC_FACE_CACHE = ();
934		3467
935	The parameter C<$family> should best start with the name of the extension	3468	my $enc = JSON::XS->new->utf8->canonical->relaxed;
936	using it, it should be unique.
937		3469
938	=over 4	3470	trace "loading facedata from $path\n";
939		3471
940	=item $hashref = cf::db_get $family	3472	my $facedata = decode_storable load_file $path;
941		3473
942	Return a hashref for use by the extension C<$family>, which can be	3474	$facedata->{version} == 2
943	modified. After modifications, you have to call C<cf::db_dirty> or	3475	or cf::cleanup "$path: version mismatch, cannot proceed.";
944	C<cf::db_sync>.
945		3476
946	=item $value = cf::db_get $family => $key	3477	# patch in the exptable
		3478	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3479	$facedata->{resource}{"res/exp_table"} = {
		3480	type => FT_RSRC,
		3481	data => $exp_table,
		3482	hash => (Digest::MD5::md5 $exp_table),
		3483	};
		3484	cf::cede_to_tick;
947		3485
948	Returns a single value from the database	3486	{
		3487	my $faces = $facedata->{faceinfo};
949		3488
950	=item cf::db_put $family => $hashref	3489	while (my ($face, $info) = each %$faces) {
		3490	my $idx = (cf::face::find $face) || cf::face::alloc $face;
951		3491
952	Stores the given family hashref into the database. Updates are delayed, if	3492	cf::face::set_visibility $idx, $info->{visibility};
953	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3493	cf::face::set_magicmap $idx, $info->{magicmap};
		3494	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3495	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3496	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
954		3497
955	=item cf::db_put $family => $key => $value	3498	cf::cede_to_tick;
		3499	}
956		3500
957	Stores the given C<$value> in the family hash. Updates are delayed, if you	3501	while (my ($face, $info) = each %$faces) {
958	want the data to be synced to disk immediately, use C<cf::db_sync>.	3502	next unless $info->{smooth};
959		3503
960	=item cf::db_dirty	3504	my $idx = cf::face::find $face
		3505	or next;
961		3506
962	Marks the database as dirty, to be updated at a later time.	3507	if (my $smooth = cf::face::find $info->{smooth}) {
		3508	cf::face::set_smooth $idx, $smooth;
		3509	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3510	} else {
		3511	error "smooth face '$info->{smooth}' not found for face '$face'";
		3512	}
963		3513
964	=item cf::db_sync	3514	cf::cede_to_tick;
		3515	}
		3516	}
965		3517
966	Immediately write the database to disk I<if it is dirty>.	3518	{
		3519	my $anims = $facedata->{animinfo};
967		3520
968	=cut	3521	while (my ($anim, $info) = each %$anims) {
		3522	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3523	cf::cede_to_tick;
		3524	}
		3525
		3526	cf::anim::invalidate_all; # d'oh
		3527	}
		3528
		3529	{
		3530	my $res = $facedata->{resource};
		3531
		3532	while (my ($name, $info) = each %$res) {
		3533	if (defined $info->{type}) {
		3534	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3535
		3536	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3537	cf::face::set_type $idx, $info->{type};
		3538	} else {
		3539	$RESOURCE{$name} = $info; # unused
		3540	}
		3541
		3542	cf::cede_to_tick;
		3543	}
		3544	}
		3545
		3546	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3547
		3548	1
		3549	}
		3550
		3551	register_exticmd fx_want => sub {
		3552	my ($ns, $want) = @_;
		3553
		3554	while (my ($k, $v) = each %$want) {
		3555	$ns->fx_want ($k, $v);
		3556	}
		3557	};
		3558
		3559	sub load_resource_file($) {
		3560	my $guard = lock_acquire "load_resource_file";
		3561
		3562	my $status = load_resource_file_ $_[0];
		3563	get_slot 0.1, 100;
		3564	cf::arch::commit_load;
		3565
		3566	$status
		3567	}
		3568
		3569	sub reload_regions {
		3570	# HACK to clear player env face cache, we need some signal framework
		3571	# for this (global event?)
		3572	%ext::player_env::MUSIC_FACE_CACHE = ();
		3573
		3574	load_resource_file "$MAPDIR/regions"
		3575	or die "unable to load regions file\n";
		3576
		3577	for (cf::region::list) {
		3578	$_->{match} = qr/$_->{match}/
		3579	if exists $_->{match};
		3580	}
		3581	}
		3582
		3583	sub reload_facedata {
		3584	load_facedata "$DATADIR/facedata"
		3585	or die "unable to load facedata\n";
		3586	}
		3587
		3588	sub reload_archetypes {
		3589	load_resource_file "$DATADIR/archetypes"
		3590	or die "unable to load archetypes\n";
		3591	}
		3592
		3593	sub reload_treasures {
		3594	load_resource_file "$DATADIR/treasures"
		3595	or die "unable to load treasurelists\n";
		3596	}
		3597
		3598	sub reload_sound {
		3599	trace "loading sound config from $DATADIR/sound\n";
		3600
		3601	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3602
		3603	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3604	my $sound = $soundconf->{compat}[$_]
		3605	or next;
		3606
		3607	my $face = cf::face::find "sound/$sound->[1]";
		3608	cf::sound::set $sound->[0] => $face;
		3609	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3610	}
		3611
		3612	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3613	my $face = cf::face::find "sound/$v";
		3614	cf::sound::set $k => $face;
		3615	}
		3616	}
		3617
		3618	sub reload_resources {
		3619	trace "reloading resource files...\n";
		3620
		3621	reload_exp_table;
		3622	reload_materials;
		3623	reload_facedata;
		3624	reload_sound;
		3625	reload_archetypes;
		3626	reload_regions;
		3627	reload_treasures;
		3628
		3629	trace "finished reloading resource files\n";
		3630	}
		3631
		3632	sub reload_config {
		3633	trace "reloading config file...\n";
		3634
		3635	my $config = load_file "$CONFDIR/config";
		3636	utf8::decode $config;
		3637	*CFG = decode_yaml $config;
		3638
		3639	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3640
		3641	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3642	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3643
		3644	if (exists $CFG{mlockall}) {
		3645	eval {
		3646	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3647	and die "WARNING: m(un)lockall failed: $!\n";
		3648	};
		3649	warn $@ if $@;
		3650	}
		3651	}
		3652
		3653	sub pidfile() {
		3654	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3655	or die "$PIDFILE: $!";
		3656	flock $fh, &Fcntl::LOCK_EX
		3657	or die "$PIDFILE: flock: $!";
		3658	$fh
		3659	}
		3660
		3661	# make sure only one server instance is running at any one time
		3662	sub atomic {
		3663	my $fh = pidfile;
		3664
		3665	my $pid = <$fh>;
		3666	kill 9, $pid if $pid > 0;
		3667
		3668	seek $fh, 0, 0;
		3669	print $fh $$;
		3670	}
		3671
		3672	sub main_loop {
		3673	trace "EV::loop starting\n";
		3674	if (1) {
		3675	EV::loop;
		3676	}
		3677	trace "EV::loop returned\n";
		3678	goto &main_loop unless $REALLY_UNLOOP;
		3679	}
		3680
		3681	sub main {
		3682	cf::init_globals; # initialise logging
		3683
		3684	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3685	LOG llevInfo, "Copyright (C) 2005-2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3686	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3687	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3688
		3689	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3690
		3691	# we must not ever block the main coroutine
		3692	local $Coro::idle = sub {
		3693	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3694	(async {
		3695	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3696	EV::loop EV::LOOP_ONESHOT;
		3697	})->prio (Coro::PRIO_MAX);
		3698	};
		3699
		3700	evthread_start IO::AIO::poll_fileno;
		3701
		3702	cf::sync_job {
		3703	cf::incloader::init ();
		3704
		3705	cf::init_anim;
		3706	cf::init_attackmess;
		3707	cf::init_dynamic;
		3708
		3709	cf::load_settings;
		3710
		3711	reload_resources;
		3712	reload_config;
		3713	db_init;
		3714
		3715	cf::init_uuid;
		3716	cf::init_signals;
		3717	cf::init_skills;
		3718
		3719	cf::init_beforeplay;
		3720
		3721	atomic;
		3722
		3723	load_extensions;
		3724
		3725	utime time, time, $RUNTIMEFILE;
		3726
		3727	# no (long-running) fork's whatsoever before this point(!)
		3728	use POSIX ();
		3729	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3730
		3731	cf::_post_init 0;
		3732	};
		3733
		3734	cf::object::thawer::errors_are_fatal 0;
		3735	info "parse errors in files are no longer fatal from this point on.\n";
		3736
		3737	my $free_main; $free_main = EV::idle sub {
		3738	undef $free_main;
		3739	undef &main; # free gobs of memory :)
		3740	};
		3741
		3742	goto &main_loop;
		3743	}
		3744
		3745	#############################################################################
		3746	# initialisation and cleanup
		3747
		3748	# install some emergency cleanup handlers
		3749	BEGIN {
		3750	our %SIGWATCHER = ();
		3751	for my $signal (qw(INT HUP TERM)) {
		3752	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3753	cf::cleanup "SIG$signal";
		3754	};
		3755	}
		3756	}
		3757
		3758	sub write_runtime_sync {
		3759	my $t0 = AE::time;
		3760
		3761	# first touch the runtime file to show we are still running:
		3762	# the fsync below can take a very very long time.
		3763
		3764	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3765
		3766	my $guard = cf::lock_acquire "write_runtime";
		3767
		3768	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3769	or return;
		3770
		3771	my $value = $cf::RUNTIME + 90 + 10;
		3772	# 10 is the runtime save interval, for a monotonic clock
		3773	# 60 allows for the watchdog to kill the server.
		3774
		3775	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3776	and return;
		3777
		3778	# always fsync - this file is important
		3779	aio_fsync $fh
		3780	and return;
		3781
		3782	# touch it again to show we are up-to-date
		3783	aio_utime $fh, undef, undef;
		3784
		3785	close $fh
		3786	or return;
		3787
		3788	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3789	and return;
		3790
		3791	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3792
		3793	1
		3794	}
		3795
		3796	our $uuid_lock;
		3797	our $uuid_skip;
		3798
		3799	sub write_uuid_sync($) {
		3800	$uuid_skip ||= $_[0];
		3801
		3802	return if $uuid_lock;
		3803	local $uuid_lock = 1;
		3804
		3805	my $uuid = "$LOCALDIR/uuid";
		3806
		3807	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3808	or return;
		3809
		3810	my $value = uuid_seq uuid_cur;
		3811
		3812	unless ($value) {
		3813	info "cowardly refusing to write zero uuid value!\n";
		3814	return;
		3815	}
		3816
		3817	my $value = uuid_str $value + $uuid_skip;
		3818	$uuid_skip = 0;
		3819
		3820	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3821	and return;
		3822
		3823	# always fsync - this file is important
		3824	aio_fsync $fh
		3825	and return;
		3826
		3827	close $fh
		3828	or return;
		3829
		3830	aio_rename "$uuid~", $uuid
		3831	and return;
		3832
		3833	trace "uuid file written ($value).\n";
		3834
		3835	1
		3836
		3837	}
		3838
		3839	sub write_uuid($$) {
		3840	my ($skip, $sync) = @_;
		3841
		3842	$sync ? write_uuid_sync $skip
		3843	: async { write_uuid_sync $skip };
		3844	}
		3845
		3846	sub emergency_save() {
		3847	my $freeze_guard = cf::freeze_mainloop;
		3848
		3849	info "emergency_perl_save: enter\n";
		3850
		3851	# this is a trade-off: we want to be very quick here, so
		3852	# save all maps without fsync, and later call a global sync
		3853	# (which in turn might be very very slow)
		3854	local $USE_FSYNC = 0;
		3855
		3856	cf::sync_job {
		3857	cf::write_runtime_sync; # external watchdog should not bark
		3858
		3859	# use a peculiar iteration method to avoid tripping on perl
		3860	# refcount bugs in for. also avoids problems with players
		3861	# and maps saved/destroyed asynchronously.
		3862	info "emergency_perl_save: begin player save\n";
		3863	for my $login (keys %cf::PLAYER) {
		3864	my $pl = $cf::PLAYER{$login} or next;
		3865	$pl->valid or next;
		3866	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3867	$pl->save;
		3868	}
		3869	info "emergency_perl_save: end player save\n";
		3870
		3871	cf::write_runtime_sync; # external watchdog should not bark
		3872
		3873	info "emergency_perl_save: begin map save\n";
		3874	for my $path (keys %cf::MAP) {
		3875	my $map = $cf::MAP{$path} or next;
		3876	$map->valid or next;
		3877	$map->save;
		3878	}
		3879	info "emergency_perl_save: end map save\n";
		3880
		3881	cf::write_runtime_sync; # external watchdog should not bark
		3882
		3883	info "emergency_perl_save: begin database checkpoint\n";
		3884	BDB::db_env_txn_checkpoint $DB_ENV;
		3885	info "emergency_perl_save: end database checkpoint\n";
		3886
		3887	info "emergency_perl_save: begin write uuid\n";
		3888	write_uuid_sync 1;
		3889	info "emergency_perl_save: end write uuid\n";
		3890
		3891	cf::write_runtime_sync; # external watchdog should not bark
		3892
		3893	trace "emergency_perl_save: syncing database to disk";
		3894	BDB::db_env_txn_checkpoint $DB_ENV;
		3895
		3896	info "emergency_perl_save: starting sync\n";
		3897	IO::AIO::aio_sync sub {
		3898	info "emergency_perl_save: finished sync\n";
		3899	};
		3900
		3901	cf::write_runtime_sync; # external watchdog should not bark
		3902
		3903	trace "emergency_perl_save: flushing outstanding aio requests";
		3904	while (IO::AIO::nreqs || BDB::nreqs) {
		3905	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3906	}
		3907
		3908	cf::write_runtime_sync; # external watchdog should not bark
		3909	};
		3910
		3911	info "emergency_perl_save: leave\n";
		3912	}
		3913
		3914	sub post_cleanup {
		3915	my ($make_core) = @_;
		3916
		3917	IO::AIO::flush;
		3918
		3919	error Carp::longmess "post_cleanup backtrace"
		3920	if $make_core;
		3921
		3922	my $fh = pidfile;
		3923	unlink $PIDFILE if <$fh> == $$;
		3924	}
		3925
		3926	# a safer delete_package, copied from Symbol
		3927	sub clear_package($) {
		3928	my $pkg = shift;
		3929
		3930	# expand to full symbol table name if needed
		3931	unless ($pkg =~ /^main::.*::$/) {
		3932	$pkg = "main$pkg" if $pkg =~ /^::/;
		3933	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3934	$pkg .= '::' unless $pkg =~ /::$/;
		3935	}
		3936
		3937	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3938	my $stem_symtab = *{$stem}{HASH};
		3939
		3940	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3941	or return;
		3942
		3943	# clear all symbols
		3944	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3945	for my $name (keys %$leaf_symtab) {
		3946	_gv_clear *{"$pkg$name"};
		3947	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3948	}
		3949	}
		3950
		3951	sub do_reload_perl() {
		3952	# can/must only be called in main
		3953	unless (in_main) {
		3954	error "can only reload from main coroutine";
		3955	return;
		3956	}
		3957
		3958	return if $RELOAD++;
		3959
		3960	my $t1 = AE::time;
		3961
		3962	while ($RELOAD) {
		3963	cf::get_slot 0.1, -1, "reload_perl";
		3964	info "perl_reload: reloading...";
		3965
		3966	trace "perl_reload: entering sync_job";
		3967
		3968	cf::sync_job {
		3969	#cf::emergency_save;
		3970
		3971	trace "perl_reload: cancelling all extension coros";
		3972	$_->cancel for values %EXT_CORO;
		3973	%EXT_CORO = ();
		3974
		3975	trace "perl_reload: removing commands";
		3976	%COMMAND = ();
		3977
		3978	trace "perl_reload: removing ext/exti commands";
		3979	%EXTCMD = ();
		3980	%EXTICMD = ();
		3981
		3982	trace "perl_reload: unloading/nuking all extensions";
		3983	for my $pkg (@EXTS) {
		3984	trace "... unloading $pkg";
		3985
		3986	if (my $cb = $pkg->can ("unload")) {
		3987	eval {
		3988	$cb->($pkg);
		3989	1
		3990	} or error "$pkg unloaded, but with errors: $@";
		3991	}
		3992
		3993	trace "... clearing $pkg";
		3994	clear_package $pkg;
		3995	}
		3996
		3997	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3998	while (my ($k, $v) = each %INC) {
		3999	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4000
		4001	trace "... unloading $k";
		4002	delete $INC{$k};
		4003
		4004	$k =~ s/\.pm$//;
		4005	$k =~ s/\//::/g;
		4006
		4007	if (my $cb = $k->can ("unload_module")) {
		4008	$cb->();
		4009	}
		4010
		4011	clear_package $k;
		4012	}
		4013
		4014	trace "perl_reload: getting rid of safe::, as good as possible";
		4015	clear_package "safe::$_"
		4016	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4017
		4018	trace "perl_reload: unloading cf.pm \"a bit\"";
		4019	delete $INC{"cf.pm"};
		4020	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4021
		4022	# don't, removes xs symbols, too,
		4023	# and global variables created in xs
		4024	#clear_package __PACKAGE__;
		4025
		4026	info "perl_reload: unload completed, starting to reload now";
		4027
		4028	trace "perl_reload: reloading cf.pm";
		4029	require cf;
		4030	cf::_connect_to_perl_1;
		4031
		4032	trace "perl_reload: loading config and database again";
		4033	cf::reload_config;
		4034
		4035	trace "perl_reload: loading extensions";
		4036	cf::load_extensions;
		4037
		4038	if ($REATTACH_ON_RELOAD) {
		4039	trace "perl_reload: reattaching attachments to objects/players";
		4040	_global_reattach; # objects, sockets
		4041	trace "perl_reload: reattaching attachments to maps";
		4042	reattach $_ for values %MAP;
		4043	trace "perl_reload: reattaching attachments to players";
		4044	reattach $_ for values %PLAYER;
		4045	}
		4046
		4047	cf::_post_init 1;
		4048
		4049	trace "perl_reload: leaving sync_job";
		4050
		4051	1
		4052	} or do {
		4053	error $@;
		4054	cf::cleanup "perl_reload: error, exiting.";
		4055	};
		4056
		4057	--$RELOAD;
		4058	}
		4059
		4060	$t1 = AE::time - $t1;
		4061	info "perl_reload: completed in ${t1}s\n";
		4062	};
		4063
		4064	our $RELOAD_WATCHER; # used only during reload
		4065
		4066	sub reload_perl() {
		4067	# doing reload synchronously and two reloads happen back-to-back,
		4068	# coro crashes during coro_state_free->destroy here.
		4069
		4070	$RELOAD_WATCHER ||= cf::async {
		4071	Coro::AIO::aio_wait cache_extensions;
		4072
		4073	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4074	do_reload_perl;
		4075	undef $RELOAD_WATCHER;
		4076	};
		4077	};
		4078	}
		4079
		4080	register_command "reload" => sub {
		4081	my ($who, $arg) = @_;
		4082
		4083	if ($who->flag (FLAG_WIZ)) {
		4084	$who->message ("reloading server.");
		4085	async {
		4086	$Coro::current->{desc} = "perl_reload";
		4087	reload_perl;
		4088	};
		4089	}
		4090	};
		4091
		4092	#############################################################################
		4093
		4094	my $bug_warning = 0;
		4095
		4096	our @WAIT_FOR_TICK;
		4097	our @WAIT_FOR_TICK_BEGIN;
		4098
		4099	sub wait_for_tick() {
		4100	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4101
		4102	my $signal = new Coro::Signal;
		4103	push @WAIT_FOR_TICK, $signal;
		4104	$signal->wait;
		4105	}
		4106
		4107	sub wait_for_tick_begin() {
		4108	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4109
		4110	my $signal = new Coro::Signal;
		4111	push @WAIT_FOR_TICK_BEGIN, $signal;
		4112	$signal->wait;
		4113	}
		4114
		4115	sub tick {
		4116	if ($Coro::current != $Coro::main) {
		4117	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4118	unless ++$bug_warning > 10;
		4119	return;
		4120	}
		4121
		4122	cf::server_tick; # one server iteration
		4123
		4124	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4125
		4126	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4127	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4128	Coro::async_pool {
		4129	$Coro::current->{desc} = "runtime saver";
		4130	write_runtime_sync
		4131	or error "ERROR: unable to write runtime file: $!";
		4132	};
		4133	}
		4134
		4135	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4136	$sig->send;
		4137	}
		4138	while (my $sig = shift @WAIT_FOR_TICK) {
		4139	$sig->send;
		4140	}
		4141
		4142	$LOAD = ($NOW - $TICK_START) / $TICK;
		4143	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4144
		4145	if (0) {
		4146	if ($NEXT_TICK) {
		4147	my $jitter = $TICK_START - $NEXT_TICK;
		4148	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4149	debug "jitter $JITTER\n";#d#
		4150	}
		4151	}
		4152	}
969		4153
970	{	4154	{
971	my $db;	4155	# configure BDB
972	my $path = cf::localdir . "/database.pst";
973		4156
974	sub db_load() {	4157	BDB::min_parallel 16;
975	warn "loading database $path\n";#d# remove later	4158	BDB::max_poll_reqs $TICK * 0.1;
976	$db = stat $path ? Storable::retrieve $path : { };	4159	$AnyEvent::BDB::WATCHER->priority (1);
977	}
978		4160
979	my $pid;	4161	unless ($DB_ENV) {
		4162	$DB_ENV = BDB::db_env_create;
		4163	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4164	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4165	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4166	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4167	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
980		4168
981	sub db_save() {	4169	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 {	4170	eval {
1018	$db->{$_[0]} = $_[1];	4171	BDB::db_env_open
1019	}	4172	$DB_ENV,
1020	db_dirty;	4173	$BDBDIR,
1021	}	4174	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4175	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4176	0666;
1022		4177
1023	attach_global	4178	cf::cleanup "db_env_open($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 cfg_load {
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	cfg_load;
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	}	4179	};
1082		4180
1083	Symbol::delete_package $k;	4181	cf::cleanup "db_env_open(db): $@" if $@;
1084	}	4182	};
		4183	}
1085		4184
1086	# sync database to disk	4185	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1087	cf::db_sync;	4186	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 config and database again
1108	cf::cfg_load;
1109	cf::db_load;
1110
1111	# load extensions
1112	$msg->("load extensions");
1113	cf::load_extensions;
1114
1115	# reattach attachments to objects
1116	$msg->("reattach");
1117	_global_reattach;
1118	};	4187	};
1119	$msg->($@) if $@;	4188	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1120		4189	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1121	$msg->("reloaded");
1122	};
1123
1124	sub perl_reload() {
1125	_perl_reload {
1126	warn $_[0];
1127	print "$_[0]\n";
1128	};	4190	};
		4191	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4192	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4193	};
1129	}	4194	}
1130		4195
1131	register_command "perl-reload", 0, sub {	4196	{
		4197	# configure IO::AIO
		4198
		4199	IO::AIO::min_parallel 8;
		4200	IO::AIO::max_poll_time $TICK * 0.1;
		4201	undef $AnyEvent::AIO::WATCHER;
		4202	}
		4203
		4204	our $_log_backtrace;
		4205	our $_log_backtrace_last;
		4206
		4207	sub _log_backtrace {
1132	my ($who, $arg) = @_;	4208	my ($msg, @addr) = @_;
1133		4209
1134	if ($who->flag (FLAG_WIZ)) {	4210	$msg =~ s/\n$//;
1135	_perl_reload {	4211
1136	warn $_[0];	4212	if ($_log_backtrace_last eq $msg) {
1137	$who->message ($_[0]);	4213	LOG llevInfo, "[ABT] $msg\n";
		4214	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4215	# limit the # of concurrent backtraces
		4216	} elsif ($_log_backtrace < 2) {
		4217	$_log_backtrace_last = $msg;
		4218	++$_log_backtrace;
		4219	my $perl_bt = Carp::longmess $msg;
		4220	async {
		4221	$Coro::current->{desc} = "abt $msg";
		4222
		4223	my @bt = fork_call {
		4224	@addr = map { sprintf "%x", $_ } @addr;
		4225	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4226	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4227	or die "addr2line: $!";
		4228
		4229	my @funcs;
		4230	my @res = <$fh>;
		4231	chomp for @res;
		4232	while (@res) {
		4233	my ($func, $line) = splice @res, 0, 2, ();
		4234	push @funcs, "[$func] $line";
		4235	}
		4236
		4237	@funcs
		4238	};
		4239
		4240	LOG llevInfo, "[ABT] $perl_bt\n";
		4241	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4242	LOG llevInfo, "[ABT] $_\n" for @bt;
		4243	--$_log_backtrace;
1138	};	4244	};
1139	}	4245	} else {
1140	};	4246	LOG llevInfo, "[ABT] $msg\n";
1141		4247	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1142	register "<global>", __PACKAGE__;
1143
1144	unshift @INC, $LIBDIR;
1145
1146	$TICK_WATCHER = Event->timer (
1147	prio => 1,
1148	at => $NEXT_TICK || 1,
1149	cb => sub {
1150	cf::server_tick; # one server iteration
1151
1152	my $NOW = Event::time;
1153	$NEXT_TICK += $TICK;
1154
1155	# if we are delayed by four ticks, skip them all
1156	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1157
1158	$TICK_WATCHER->at ($NEXT_TICK);
1159	$TICK_WATCHER->start;
1160	},	4248	}
1161	);	4249	}
		4250
		4251	# load additional modules
		4252	require "cf/$_.pm" for @EXTRA_MODULES;
		4253	cf::_connect_to_perl_2;
		4254
		4255	END { cf::emergency_save }
1162		4256
1163	1	4257	1
1164		4258

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