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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.95 by root, Fri Dec 22 02:04:20 2006 UTC vs.
Revision 1.595 by root, Fri Nov 9 16:27:55 2012 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010,2011,2012 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 AnyEvent ();
		38	use AnyEvent::IO ();
		39	use AnyEvent::DNS ();
		40
		41	use Coro ();
		42	use Coro::State;
		43	use Coro::Handle;
		44	use Coro::EV;
		45	use Coro::AnyEvent;
		46	use Coro::Timer;
		47	use Coro::Signal;
		48	use Coro::Semaphore;
		49	use Coro::SemaphoreSet;
		50	use Coro::AnyEvent;
		51	use Coro::AIO;
		52	use Coro::BDB 1.6;
		53	use Coro::Storable;
		54	use Coro::Util ();
		55
		56	use Guard ();
		57	use JSON::XS 2.01 ();
		58	use BDB ();
		59	use Data::Dumper;
		60	use Fcntl;
		61	use YAML::XS ();
10	use IO::AIO ();	62	use IO::AIO ();
11	use YAML::Syck ();
12	use Time::HiRes;	63	use Time::HiRes;
13	use Event;	64	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	65	use Digest::MD5 ();
15		66
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	67	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		68
19	use strict;	69	# configure various modules to our taste
		70	#
		71	$Storable::canonical = 1; # reduce rsync transfers
		72	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		73
		74	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		75
		76	# make sure c-lzf reinitialises itself
		77	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		78	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		79
		80	# strictly for debugging
		81	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
20		82
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	83	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		84
		85	our @ORIG_INC;
22		86
23	our %COMMAND = ();	87	our %COMMAND = ();
24	our %COMMAND_TIME = ();	88	our %COMMAND_TIME = ();
		89
		90	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	91	our %EXTCMD = ();
		92	our %EXTACMD = ();
		93	our %EXTICMD = ();
		94	our %EXTIACMD = ();
		95	our %EXT_CORO = (); # coroutines bound to extensions
		96	our %EXT_MAP = (); # pluggable maps
26		97
27	_init_vars;	98	our $RELOAD; # number of reloads so far, non-zero while in reload
28
29	our @EVENT;	99	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	100	our @REFLECT; # set by XS
		101	our %REFLECT; # set by us
31		102
32	our $TICK = MAX_TIME * 1e-6;	103	our $CONFDIR = confdir;
33	our $TICK_WATCHER;	104
		105	our $DATADIR = datadir;
		106	our $LIBDIR = "$DATADIR/ext";
		107	our $PODDIR = "$DATADIR/pod";
		108	our $MAPDIR = "$DATADIR/" . mapdir;
		109
		110	our $LOCALDIR = localdir;
		111	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		112	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		113	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		114	our $RANDOMDIR = "$LOCALDIR/random";
		115	our $BDBDIR = "$LOCALDIR/db";
		116	our $PIDFILE = "$LOCALDIR/pid";
		117	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		118
		119	#our %RESOURCE; # unused
		120
		121	our $OUTPUT_RATE_MIN = 3000;
		122	our $OUTPUT_RATE_MAX = 1000000;
		123
		124	our $MAX_LINKS = 32; # how many chained exits to follow
		125	our $VERBOSE_IO = 1;
		126
		127	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		128	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	129	our $NEXT_TICK;
		130	our $USE_FSYNC = 1; # use fsync to write maps - default on
		131
		132	our $BDB_DEADLOCK_WATCHER;
		133	our $BDB_CHECKPOINT_WATCHER;
		134	our $BDB_TRICKLE_WATCHER;
		135	our $DB_ENV;
		136
		137	our @EXTRA_MODULES = qw(pod match mapscript incloader);
35		138
36	our %CFG;	139	our %CFG;
		140	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
37		141
38	our $UPTIME; $UPTIME ||= time;	142	our $UPTIME; $UPTIME ||= time;
		143	our $RUNTIME = 0;
		144	our $SERVER_TICK = 0;
		145	our $NOW;
		146
		147	our (%PLAYER, %PLAYER_LOADING); # all users
		148	our (%MAP, %MAP_LOADING ); # all maps
		149	our $LINK_MAP; # the special {link} map, which is always available
		150
		151	# used to convert map paths into valid unix filenames by replacing / by ∕
		152	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		153
		154	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		155	our $LOADAVG; # same thing, but with alpha-smoothing
		156	our $JITTER; # average jitter
		157	our $TICK_START; # for load detecting purposes
		158
		159	our @POST_INIT;
		160
		161	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		162	our $REALLY_UNLOOP; # never set to true, please :)
		163
		164	our $WAIT_FOR_TICK = new Coro::Signal;
		165	our @WAIT_FOR_TICK_BEGIN;
		166
		167	binmode STDOUT;
		168	binmode STDERR;
		169
		170	# read virtual server time, if available
		171	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		172	open my $fh, "<", $RUNTIMEFILE
		173	or die "unable to read $RUNTIMEFILE file: $!";
		174	$RUNTIME = <$fh> + 0.;
		175	}
		176
		177	eval "sub TICK() { $TICK } 1" or die;
		178
		179	mkdir $_
		180	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		181
		182	our $EMERGENCY_POSITION;
		183
		184	sub cf::map::normalise;
		185
		186	sub in_main() {
		187	$Coro::current == $Coro::main
		188	}
39		189
40	#############################################################################	190	#############################################################################
41		191
		192	%REFLECT = ();
		193	for (@REFLECT) {
		194	my $reflect = JSON::XS::decode_json $_;
		195	$REFLECT{$reflect->{class}} = $reflect;
		196	}
		197
		198	# this is decidedly evil
		199	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		200
		201	#############################################################################
		202
42	=head2 GLOBAL VARIABLES	203	=head2 GLOBAL VARIABLES
43		204
44	=over 4	205	=over 4
45		206
46	=item $cf::UPTIME	207	=item $cf::UPTIME
47		208
48	The timestamp of the server start (so not actually an uptime).	209	The timestamp of the server start (so not actually an "uptime").
49		210
50	=item $cf::LIBDIR	211	=item $cf::SERVER_TICK
51		212
52	The perl library directory, where extensions and cf-specific modules can	213	An unsigned integer that starts at zero when the server is started and is
53	be found. It will be added to C<@INC> automatically.	214	incremented on every tick.
		215
		216	=item $cf::NOW
		217
		218	The (real) time of the last (current) server tick - updated before and
		219	after tick processing, so this is useful only as a rough "what time is it
		220	now" estimate.
54		221
55	=item $cf::TICK	222	=item $cf::TICK
56		223
57	The interval between server ticks, in seconds.	224	The interval between each server tick, in seconds.
		225
		226	=item $cf::RUNTIME
		227
		228	The time this server has run, starts at 0 and is increased by $cf::TICK on
		229	every server tick.
		230
		231	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		232	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		233	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		234
		235	Various directories - "/etc", read-only install directory, perl-library
		236	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		237	unique-items directory, player file directory, random maps directory and
		238	database environment.
		239
		240	=item $cf::LOADAVG
		241
		242	The current CPU load on the server (alpha-smoothed), as a value between 0
		243	(none) and 1 (overloaded), indicating how much time is spent on processing
		244	objects per tick. Healthy values are < 0.5.
		245
		246	=item $cf::LOAD
		247
		248	The raw value load value from the last tick.
58		249
59	=item %cf::CFG	250	=item %cf::CFG
60		251
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	252	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
62	from wherever your confdir points to.	253	from wherever your confdir points to.
63		254
		255	=item cf::wait_for_tick, cf::wait_for_tick_begin
		256
		257	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		258	returns directly I<after> the tick processing (and consequently, can only wake one thread
		259	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		260
		261	Note that cf::Wait_for_tick will immediately return when the server is not
		262	ticking, making it suitable for small pauses in threads that need to run
		263	when the server is paused. If that is not applicable (i.e. you I<really>
		264	want to wait, use C<$cf::WAIT_FOR_TICK>).
		265
		266	=item $cf::WAIT_FOR_TICK
		267
		268	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		269	variable contains a L<Coro::Signal> that is broadcats after every server
		270	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		271	next server tick.
		272
		273	=cut
		274
		275	sub wait_for_tick();
		276	sub wait_for_tick_begin();
		277
		278	=item @cf::INVOKE_RESULTS
		279
		280	This array contains the results of the last C<invoke ()> call. When
		281	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		282	that call.
		283
		284	=item %cf::REFLECT
		285
		286	Contains, for each (C++) class name, a hash reference with information
		287	about object members (methods, scalars, arrays and flags) and other
		288	metadata, which is useful for introspection.
		289
64	=back	290	=back
65		291
66	=cut	292	=cut
67		293
68	BEGIN {	294	sub error(@) { LOG llevError, join "", @_ }
69	*CORE::GLOBAL::warn = sub {	295	sub warn (@) { LOG llevWarn , join "", @_ }
		296	sub info (@) { LOG llevInfo , join "", @_ }
		297	sub debug(@) { LOG llevDebug, join "", @_ }
		298	sub trace(@) { LOG llevTrace, join "", @_ }
		299
		300	$Coro::State::WARNHOOK = sub {
70	my $msg = join "", @_;	301	my $msg = join "", @_;
		302
71	$msg .= "\n"	303	$msg .= "\n"
72	unless $msg =~ /\n$/;	304	unless $msg =~ /\n$/;
73		305
74	print STDERR "cfperl: $msg";	306	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
75	LOG llevError, "cfperl: $msg";	307
76	};	308	LOG llevWarn, $msg;
77	}	309	};
		310
		311	$Coro::State::DIEHOOK = sub {
		312	return unless $^S eq 0; # "eq", not "=="
		313
		314	error Carp::longmess $_[0];
		315
		316	if (in_main) {#d#
		317	error "DIEHOOK called in main context, Coro bug?\n";#d#
		318	return;#d#
		319	}#d#
		320
		321	# kill coroutine otherwise
		322	Coro::terminate
		323	};
78		324
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	325	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	326	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	327	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	328	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	329	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		330	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	331	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
85		332
86	# we bless all objects into (empty) derived classes to force a method lookup	333	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	334	# within the Safe compartment.
88	for my $pkg (qw(	335	for my $pkg (qw(
89	cf::global	336	cf::global cf::attachable
90	cf::object cf::object::player	337	cf::object cf::object::player
91	cf::client cf::player	338	cf::client cf::player
92	cf::arch cf::living	339	cf::arch cf::living
		340	cf::map cf::mapspace
93	cf::map cf::party cf::region	341	cf::party cf::region
94	)) {	342	)) {
95	no strict 'refs';
96	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	343	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
97	}	344	}
98		345
99	$Event::DIED = sub {	346	$EV::DIED = sub {
100	warn "error in event callback: @_";	347	warn "error in event callback: $@";
101	};	348	};
102		349
103	my %ext_pkg;	350	#############################################################################
104	my @exts;	351
105	my @hook;	352	sub fork_call(&@);
		353	sub get_slot($;$$);
		354
		355	#############################################################################
106		356
107	=head2 UTILITY FUNCTIONS	357	=head2 UTILITY FUNCTIONS
108		358
109	=over 4	359	=over 4
110		360
111	=cut	361	=item dumpval $ref
112		362
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	363	=cut
114		364
		365	sub dumpval {
		366	eval {
		367	local $SIG{__DIE__};
		368	my $d;
		369	if (1) {
		370	$d = new Data::Dumper([$_[0]], ["*var"]);
		371	$d->Terse(1);
		372	$d->Indent(2);
		373	$d->Quotekeys(0);
		374	$d->Useqq(1);
		375	#$d->Bless(...);
		376	$d->Seen($_[1]) if @_ > 1;
		377	$d = $d->Dump();
		378	}
		379	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		380	$d
		381	} || "[unable to dump $_[0]: '$@']";
		382	}
		383
		384	=item $scalar = cf::load_file $path
		385
		386	Loads the given file from path and returns its contents. Croaks on error
		387	and can block.
		388
		389	=cut
		390
		391	sub load_file($) {
		392	0 <= aio_load $_[0], my $data
		393	or Carp::croak "$_[0]: $!";
		394
		395	$data
		396	}
		397
		398	=item $success = cf::replace_file $path, $data, $sync
		399
		400	Atomically replaces the file at the given $path with new $data, and
		401	optionally $sync the data to disk before replacing the file.
		402
		403	=cut
		404
		405	sub replace_file($$;$) {
		406	my ($path, $data, $sync) = @_;
		407
		408	my $lock = cf::lock_acquire ("replace_file:$path");
		409
		410	my $fh = aio_open "$path~", Fcntl::O_WRONLY | Fcntl::O_CREAT | Fcntl::O_TRUNC, 0644
		411	or return;
		412
		413	$data = $data->() if ref $data;
		414
		415	length $data == aio_write $fh, 0, (length $data), $data, 0
		416	or return;
		417
		418	!$sync
		419	or !aio_fsync $fh
		420	or return;
		421
		422	aio_close $fh
		423	and return;
		424
		425	aio_rename "$path~", $path
		426	and return;
		427
		428	if ($sync) {
		429	$path =~ s%/[^/]*$%%;
		430	aio_pathsync $path;
		431	}
		432
		433	1
		434	}
		435
115	=item $ref = cf::from_json $json	436	=item $ref = cf::decode_json $json
116		437
117	Converts a JSON string into the corresponding perl data structure.	438	Converts a JSON string into the corresponding perl data structure.
118		439
119	=cut
120
121	sub from_json($) {
122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
123	JSON::Syck::Load $_[0]
124	}
125
126	=item $json = cf::to_json $ref	440	=item $json = cf::encode_json $ref
127		441
128	Converts a perl data structure into its JSON representation.	442	Converts a perl data structure into its JSON representation.
129		443
130	=cut	444	=cut
131		445
132	sub to_json($) {	446	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	447
134	JSON::Syck::Dump $_[0]	448	sub encode_json($) { $json_coder->encode ($_[0]) }
		449	sub decode_json($) { $json_coder->decode ($_[0]) }
		450
		451	=item $ref = cf::decode_storable $scalar
		452
		453	Same as Coro::Storable::thaw, so blocks.
		454
		455	=cut
		456
		457	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		458
		459	=item $ref = cf::decode_yaml $scalar
		460
		461	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		462
		463	=cut
		464
		465	sub decode_yaml($) {
		466	fork_call { YAML::XS::Load $_[0] } @_
		467	}
		468
		469	=item $scalar = cf::unlzf $scalar
		470
		471	Same as Compress::LZF::compress, but takes server ticks into account, so
		472	blocks.
		473
		474	=cut
		475
		476	sub unlzf($) {
		477	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		478	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		479	Compress::LZF::decompress $_[0]
		480	}
		481
		482	=item cf::post_init { BLOCK }
		483
		484	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		485	but I<before> the server starts ticking again.
		486
		487	The codeblock will have a single boolean argument to indicate whether this
		488	is a reload or not.
		489
		490	=cut
		491
		492	sub post_init(&) {
		493	push @POST_INIT, shift;
		494	}
		495
		496	sub _post_init {
		497	trace "running post_init jobs";
		498
		499	# run them in parallel...
		500
		501	my @join;
		502
		503	while () {
		504	push @join, map &Coro::async ($_, 0), @POST_INIT;
		505	@POST_INIT = ();
		506
		507	@join or last;
		508
		509	(pop @join)->join;
		510	}
		511	}
		512
		513	=item cf::lock_wait $string
		514
		515	Wait until the given lock is available. See cf::lock_acquire.
		516
		517	=item my $lock = cf::lock_acquire $string
		518
		519	Wait until the given lock is available and then acquires it and returns
		520	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		521	for example when the coroutine gets canceled), the lock is automatically
		522	returned.
		523
		524	Locks are *not* recursive, locking from the same coro twice results in a
		525	deadlocked coro.
		526
		527	Lock names should begin with a unique identifier (for example, cf::map::find
		528	uses map_find and cf::map::load uses map_load).
		529
		530	=item $locked = cf::lock_active $string
		531
		532	Return true if the lock is currently active, i.e. somebody has locked it.
		533
		534	=cut
		535
		536	our $LOCKS = new Coro::SemaphoreSet;
		537
		538	sub lock_wait($) {
		539	$LOCKS->wait ($_[0]);
		540	}
		541
		542	sub lock_acquire($) {
		543	$LOCKS->guard ($_[0])
		544	}
		545
		546	sub lock_active($) {
		547	$LOCKS->count ($_[0]) < 1
		548	}
		549
		550	sub freeze_mainloop {
		551	tick_inhibit_inc;
		552
		553	&Guard::guard (\&tick_inhibit_dec);
		554	}
		555
		556	=item cf::periodic $interval, $cb
		557
		558	Like EV::periodic, but randomly selects a starting point so that the actions
		559	get spread over time.
		560
		561	=cut
		562
		563	sub periodic($$) {
		564	my ($interval, $cb) = @_;
		565
		566	my $start = rand List::Util::min 180, $interval;
		567
		568	EV::periodic $start, $interval, 0, $cb
		569	}
		570
		571	=item cf::get_slot $time[, $priority[, $name]]
		572
		573	Allocate $time seconds of blocking CPU time at priority C<$priority>
		574	(default: 0): This call blocks and returns only when you have at least
		575	C<$time> seconds of cpu time till the next tick. The slot is only valid
		576	till the next cede.
		577
		578	Background jobs should use a priority les than zero, interactive jobs
		579	should use 100 or more.
		580
		581	The optional C<$name> can be used to identify the job to run. It might be
		582	used for statistical purposes and should identify the same time-class.
		583
		584	Useful for short background jobs.
		585
		586	=cut
		587
		588	our @SLOT_QUEUE;
		589	our $SLOT_QUEUE;
		590	our $SLOT_DECAY = 0.9;
		591
		592	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		593	$SLOT_QUEUE = Coro::async {
		594	$Coro::current->desc ("timeslot manager");
		595
		596	my $signal = new Coro::Signal;
		597	my $busy;
		598
		599	while () {
		600	next_job:
		601
		602	my $avail = cf::till_tick;
		603
		604	for (0 .. $#SLOT_QUEUE) {
		605	if ($SLOT_QUEUE[$_][0] <= $avail) {
		606	$busy = 0;
		607	my $job = splice @SLOT_QUEUE, $_, 1, ();
		608	$job->[2]->send;
		609	Coro::cede;
		610	goto next_job;
		611	} else {
		612	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		613	}
		614	}
		615
		616	if (@SLOT_QUEUE) {
		617	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		618	$WAIT_FOR_TICK->wait;
		619	} else {
		620	$busy = 0;
		621	Coro::schedule;
		622	}
		623	}
		624	};
		625
		626	sub get_slot($;$$) {
		627	return if tick_inhibit || $Coro::current == $Coro::main;
		628
		629	my ($time, $pri, $name) = @_;
		630
		631	$time = clamp $time, 0.01, $TICK * .6;
		632
		633	my $sig = new Coro::Signal;
		634
		635	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		636	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		637	$SLOT_QUEUE->ready;
		638	$sig->wait;
		639	}
		640
		641	=item cf::async { BLOCK }
		642
		643	Currently the same as Coro::async_pool, meaning you cannot use
		644	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		645	thing you are allowed to do is call C<prio> on it.
		646
		647	=cut
		648
		649	BEGIN { *async = \&Coro::async_pool }
		650
		651	=item cf::sync_job { BLOCK }
		652
		653	The design of Deliantra requires that the main coroutine ($Coro::main)
		654	is always able to handle events or runnable, as Deliantra is only
		655	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		656	acceptable.
		657
		658	If it must be done, put the blocking parts into C<sync_job>. This will run
		659	the given BLOCK in another coroutine while waiting for the result. The
		660	server will be frozen during this time, so the block should either finish
		661	fast or be very important.
		662
		663	=cut
		664
		665	sub sync_job(&) {
		666	my ($job) = @_;
		667
		668	if (in_main) {
		669	my $time = AE::time;
		670
		671	# this is the main coro, too bad, we have to block
		672	# till the operation succeeds, freezing the server :/
		673
		674	#LOG llevError, Carp::longmess "sync job";#d#
		675
		676	my $freeze_guard = freeze_mainloop;
		677
		678	my $busy = 1;
		679	my @res;
		680
		681	(async {
		682	$Coro::current->desc ("sync job coro");
		683	@res = eval { $job->() };
		684	error $@ if $@;
		685	undef $busy;
		686	})->prio (Coro::PRIO_MAX);
		687
		688	while ($busy) {
		689	if (Coro::nready) {
		690	Coro::cede_notself;
		691	} else {
		692	EV::loop EV::LOOP_ONESHOT;
		693	}
		694	}
		695
		696	my $time = AE::time - $time;
		697
		698	$TICK_START += $time; # do not account sync jobs to server load
		699
		700	wantarray ? @res : $res[0]
		701	} else {
		702	# we are in another coroutine, how wonderful, everything just works
		703
		704	$job->()
		705	}
		706	}
		707
		708	=item $coro = cf::async_ext { BLOCK }
		709
		710	Like async, but this coro is automatically being canceled when the
		711	extension calling this is being unloaded.
		712
		713	=cut
		714
		715	sub async_ext(&) {
		716	my $cb = shift;
		717
		718	my $coro = &Coro::async ($cb);
		719
		720	$coro->on_destroy (sub {
		721	delete $EXT_CORO{$coro+0};
		722	});
		723	$EXT_CORO{$coro+0} = $coro;
		724
		725	$coro
		726	}
		727
		728	=item fork_call { }, @args
		729
		730	Executes the given code block with the given arguments in a seperate
		731	process, returning the results. Everything must be serialisable with
		732	Coro::Storable. May, of course, block. Note that the executed sub may
		733	never block itself or use any form of event handling.
		734
		735	=cut
		736
		737	sub post_fork {
		738	reset_signals;
		739	}
		740
		741	sub fork_call(&@) {
		742	my ($cb, @args) = @_;
		743
		744	# we seemingly have to make a local copy of the whole thing,
		745	# otherwise perl prematurely frees the stuff :/
		746	# TODO: investigate and fix (likely this will be rather laborious)
		747
		748	my @res = Coro::Util::fork_eval {
		749	cf::post_fork;
		750	&$cb
		751	} @args;
		752
		753	wantarray ? @res : $res[-1]
		754	}
		755
		756	sub objinfo {
		757	(
		758	"counter value" => cf::object::object_count,
		759	"objects created" => cf::object::create_count,
		760	"objects destroyed" => cf::object::destroy_count,
		761	"freelist size" => cf::object::free_count,
		762	"allocated objects" => cf::object::objects_size,
		763	"active objects" => cf::object::actives_size,
		764	)
		765	}
		766
		767	=item $coin = coin_from_name $name
		768
		769	=cut
		770
		771	our %coin_alias = (
		772	"silver" => "silvercoin",
		773	"silvercoin" => "silvercoin",
		774	"silvercoins" => "silvercoin",
		775	"gold" => "goldcoin",
		776	"goldcoin" => "goldcoin",
		777	"goldcoins" => "goldcoin",
		778	"platinum" => "platinacoin",
		779	"platinumcoin" => "platinacoin",
		780	"platinumcoins" => "platinacoin",
		781	"platina" => "platinacoin",
		782	"platinacoin" => "platinacoin",
		783	"platinacoins" => "platinacoin",
		784	"royalty" => "royalty",
		785	"royalties" => "royalty",
		786	);
		787
		788	sub coin_from_name($) {
		789	$coin_alias{$_[0]}
		790	? cf::arch::find $coin_alias{$_[0]}
		791	: undef
		792	}
		793
		794	=item $value = cf::db_get $family => $key
		795
		796	Returns a single value from the environment database.
		797
		798	=item cf::db_put $family => $key => $value
		799
		800	Stores the given C<$value> in the family. It can currently store binary
		801	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		802
		803	=item $db = cf::db_table "name"
		804
		805	Create and/or open a new database table. The string must not be "db" and must be unique
		806	within each server.
		807
		808	=cut
		809
		810	sub db_table($) {
		811	cf::error "db_get called from main context"
		812	if $Coro::current == $Coro::main;
		813
		814	my ($name) = @_;
		815	my $db = BDB::db_create $DB_ENV;
		816
		817	eval {
		818	$db->set_flags (BDB::CHKSUM);
		819
		820	utf8::encode $name;
		821	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		822	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		823	cf::cleanup "db_open(db): $!" if $!;
		824	};
		825	cf::cleanup "db_open(db): $@" if $@;
		826
		827	$db
		828	}
		829
		830	our $DB;
		831
		832	sub db_init {
		833	$DB ||= db_table "db";
		834	}
		835
		836	sub db_get($$) {
		837	my $key = "$_[0]/$_[1]";
		838
		839	cf::error "db_get called from main context"
		840	if $Coro::current == $Coro::main;
		841
		842	BDB::db_get $DB, undef, $key, my $data;
		843
		844	$! ? ()
		845	: $data
		846	}
		847
		848	sub db_put($$$) {
		849	BDB::dbreq_pri 4;
		850	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		851	}
		852
		853	=item cf::cache $id => [$paths...], $processversion => $process
		854
		855	Generic caching function that returns the value of the resource $id,
		856	caching and regenerating as required.
		857
		858	This function can block.
		859
		860	=cut
		861
		862	sub cache {
		863	my ($id, $src, $processversion, $process) = @_;
		864
		865	my $meta =
		866	join "\x00",
		867	$processversion,
		868	map {
		869	aio_stat $_
		870	and Carp::croak "$_: $!";
		871
		872	($_, (stat _)[7,9])
		873	} @$src;
		874
		875	my $dbmeta = db_get cache => "$id/meta";
		876	if ($dbmeta ne $meta) {
		877	# changed, we may need to process
		878
		879	my @data;
		880	my $md5;
		881
		882	for (0 .. $#$src) {
		883	$data[$_] = load_file $src->[$_];
		884	}
		885
		886	# if processing is expensive, check
		887	# checksum first
		888	if (1) {
		889	$md5 =
		890	join "\x00",
		891	$processversion,
		892	map {
		893	cf::cede_to_tick;
		894	($src->[$_], Digest::MD5::md5_hex $data[$_])
		895	} 0.. $#$src;
		896
		897
		898	my $dbmd5 = db_get cache => "$id/md5";
		899	if ($dbmd5 eq $md5) {
		900	db_put cache => "$id/meta", $meta;
		901
		902	return db_get cache => "$id/data";
		903	}
		904	}
		905
		906	my $t1 = Time::HiRes::time;
		907	my $data = $process->(\@data);
		908	my $t2 = Time::HiRes::time;
		909
		910	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		911
		912	db_put cache => "$id/data", $data;
		913	db_put cache => "$id/md5" , $md5;
		914	db_put cache => "$id/meta", $meta;
		915
		916	return $data;
		917	}
		918
		919	db_get cache => "$id/data"
		920	}
		921
		922	=item cf::datalog type => key => value, ...
		923
		924	Log a datalog packet of the given type with the given key-value pairs.
		925
		926	=cut
		927
		928	sub datalog($@) {
		929	my ($type, %kv) = @_;
		930	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
135	}	931	}
136		932
137	=back	933	=back
138		934
139	=cut	935	=cut
140		936
141	#############################################################################	937	#############################################################################
142		938
143	=head2 ATTACHABLE OBJECTS	939	=head2 ATTACHABLE OBJECTS
144		940
145	Many objects in crossfire are so-called attachable objects. That means you can	941	Many objects in deliantra are so-called attachable objects. That means you can
146	attach callbacks/event handlers (a collection of which is called an "attachment")	942	attach callbacks/event handlers (a collection of which is called an "attachment")
147	to it. All such attachable objects support the following methods.	943	to it. All such attachable objects support the following methods.
148		944
149	In the following description, CLASS can be any of C<global>, C<object>	945	In the following description, CLASS can be any of C<global>, C<object>
150	C<player>, C<client> or C<map> (i.e. the attachable objects in	946	C<player>, C<client> or C<map> (i.e. the attachable objects in
151	crossfire+).	947	Deliantra).
152		948
153	=over 4	949	=over 4
154		950
155	=item $attachable->attach ($attachment, key => $value...)	951	=item $attachable->attach ($attachment, key => $value...)
156		952
…		…
200	=item cf::CLASS::attachment $name, ...	996	=item cf::CLASS::attachment $name, ...
201		997
202	Register an attachment by C<$name> through which attachable objects of the	998	Register an attachment by C<$name> through which attachable objects of the
203	given CLASS can refer to this attachment.	999	given CLASS can refer to this attachment.
204		1000
205	Some classes such as crossfire maps and objects can specify attachments	1001	Some classes such as deliantra maps and objects can specify attachments
206	that are attached at load/instantiate time, thus the need for a name.	1002	that are attached at load/instantiate time, thus the need for a name.
207		1003
208	These calls expect any number of the following handler/hook descriptions:	1004	These calls expect any number of the following handler/hook descriptions:
209		1005
210	=over 4	1006	=over 4
…		…
249	my ($self, $victim) = @_;	1045	my ($self, $victim) = @_;
250	...	1046	...
251	}	1047	}
252	}	1048	}
253		1049
		1050	=item $attachable->valid
		1051
		1052	Just because you have a perl object does not mean that the corresponding
		1053	C-level object still exists. If you try to access an object that has no
		1054	valid C counterpart anymore you get an exception at runtime. This method
		1055	can be used to test for existence of the C object part without causing an
		1056	exception.
		1057
254	=cut	1058	=cut
255		1059
256	# the following variables are defined in .xs and must not be re-created	1060	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	1061	our @CB_GLOBAL = (); # registry for all global events
		1062	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	1063	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	1064	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	1065	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	1066	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	1067	our @CB_MAP = ();
263		1068
264	my %attachment;	1069	my %attachment;
		1070
		1071	sub cf::attachable::thawer_merge {
		1072	# simply override everything except _meta
		1073	local $_[0]{_meta};
		1074	%{$_[0]} = %{$_[1]};
		1075	}
265		1076
266	sub _attach_cb($$$$) {	1077	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	1078	my ($registry, $event, $prio, $cb) = @_;
268		1079
269	use sort 'stable';	1080	use sort 'stable';
…		…
272		1083
273	@{$registry->[$event]} = sort	1084	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	1085	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	1086	@{$registry->[$event] || []}, $cb;
276	}	1087	}
		1088
		1089	# hack
		1090	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		1091
278	# attach handles attaching event callbacks	1092	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	1093	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	1094	# registry (== where the callback attaches to).
281	sub _attach {	1095	sub _attach {
…		…
283		1097
284	my $object_type;	1098	my $object_type;
285	my $prio = 0;	1099	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	1100	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		1101
		1102	#TODO: get rid of this hack
		1103	if ($attachable_klass{$klass}) {
		1104	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1105	}
		1106
288	while (@arg) {	1107	while (@arg) {
289	my $type = shift @arg;	1108	my $type = shift @arg;
290		1109
291	if ($type eq "prio") {	1110	if ($type eq "prio") {
292	$prio = shift @arg;	1111	$prio = shift @arg;
…		…
296	$registry = $CB_TYPE[$object_type] ||= [];	1115	$registry = $CB_TYPE[$object_type] ||= [];
297		1116
298	} elsif ($type eq "subtype") {	1117	} elsif ($type eq "subtype") {
299	defined $object_type or Carp::croak "subtype specified without type";	1118	defined $object_type or Carp::croak "subtype specified without type";
300	my $object_subtype = shift @arg;	1119	my $object_subtype = shift @arg;
301	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	1120	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
302		1121
303	} elsif ($type eq "package") {	1122	} elsif ($type eq "package") {
304	my $pkg = shift @arg;	1123	my $pkg = shift @arg;
305		1124
306	while (my ($name, $id) = each %cb_id) {	1125	while (my ($name, $id) = each %cb_id) {
…		…
311		1130
312	} elsif (exists $cb_id{$type}) {	1131	} elsif (exists $cb_id{$type}) {
313	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;	1132	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
314		1133
315	} elsif (ref $type) {	1134	} elsif (ref $type) {
316	warn "attaching objects not supported, ignoring.\n";	1135	error "attaching objects not supported, ignoring.\n";
317		1136
318	} else {	1137	} else {
319	shift @arg;	1138	shift @arg;
320	warn "attach argument '$type' not supported, ignoring.\n";	1139	error "attach argument '$type' not supported, ignoring.\n";
321	}	1140	}
322	}	1141	}
323	}	1142	}
324		1143
325	sub _object_attach {	1144	sub _object_attach {
…		…
335	_attach $registry, $klass, @attach;	1154	_attach $registry, $klass, @attach;
336	}	1155	}
337		1156
338	$obj->{$name} = \%arg;	1157	$obj->{$name} = \%arg;
339	} else {	1158	} else {
340	warn "object uses attachment '$name' that is not available, postponing.\n";	1159	info "object uses attachment '$name' which is not available, postponing.\n";
341	}	1160	}
342		1161
343	$obj->{_attachment}{$name} = undef;	1162	$obj->{_attachment}{$name} = undef;
344	}	1163	}
345		1164
…		…
347	if (ref $_[0]) {	1166	if (ref $_[0]) {
348	_object_attach @_;	1167	_object_attach @_;
349	} else {	1168	} else {
350	_attach shift->_attach_registry, @_;	1169	_attach shift->_attach_registry, @_;
351	}	1170	}
		1171	_recalc_want;
352	};	1172	};
353		1173
354	# all those should be optimised	1174	# all those should be optimised
355	sub cf::attachable::detach {	1175	sub cf::attachable::detach {
356	my ($obj, $name) = @_;	1176	my ($obj, $name) = @_;
…		…
359	delete $obj->{_attachment}{$name};	1179	delete $obj->{_attachment}{$name};
360	reattach ($obj);	1180	reattach ($obj);
361	} else {	1181	} else {
362	Carp::croak "cannot, currently, detach class attachments";	1182	Carp::croak "cannot, currently, detach class attachments";
363	}	1183	}
		1184	_recalc_want;
364	};	1185	};
365		1186
366	sub cf::attachable::attached {	1187	sub cf::attachable::attached {
367	my ($obj, $name) = @_;	1188	my ($obj, $name) = @_;
368		1189
369	exists $obj->{_attachment}{$name}	1190	exists $obj->{_attachment}{$name}
370	}	1191	}
371		1192
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	1193	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	1194	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	1195	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	1196	(\\\@CB_$klass, KLASS_$klass)
376	}	1197	}
377		1198
…		…
383	";	1204	";
384	die if $@;	1205	die if $@;
385	}	1206	}
386		1207
387	our $override;	1208	our $override;
388	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1209	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
389		1210
390	sub override {	1211	sub override {
391	$override = 1;	1212	$override = 1;
392	@invoke_results = ();	1213	@INVOKE_RESULTS = (@_);
393	}	1214	}
394		1215
395	sub do_invoke {	1216	sub do_invoke {
396	my $event = shift;	1217	my $event = shift;
397	my $callbacks = shift;	1218	my $callbacks = shift;
398		1219
399	@invoke_results = ();	1220	@INVOKE_RESULTS = ();
400		1221
401	local $override;	1222	local $override;
402		1223
403	for (@$callbacks) {	1224	for (@$callbacks) {
404	eval { &{$_->[1]} };	1225	eval { &{$_->[1]} };
405		1226
406	if ($@) {	1227	if ($@) {
407	warn "$@";
408	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";	1228	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
409	override;	1229	override;
410	}	1230	}
411		1231
412	return 1 if $override;	1232	return 1 if $override;
413	}	1233	}
414		1234
415	0	1235	0
416	}	1236	}
417		1237
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1238	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
419		1239
420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
421
422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
423
424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	1240	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		1241
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	1242	Generate an object-specific event with the given arguments.
429		1243
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	1244	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override	1245	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	1246	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
441
442	Attachable objects includes objects, players, clients and maps.
443
444	=over 4
445
446	=item $object->valid
447
448	Just because you have a perl object does not mean that the corresponding
449	C-level object still exists. If you try to access an object that has no
450	valid C counterpart anymore you get an exception at runtime. This method
451	can be used to test for existence of the C object part without causing an
452	exception.
453		1247
454	=back	1248	=back
455		1249
456	=cut	1250	=cut
457		1251
458	#############################################################################	1252	#############################################################################
459	# object support	1253	# object support
460		1254
461	sub instantiate {	1255	sub _object_equal($$);
		1256	sub _object_equal($$) {
		1257	my ($a, $b) = @_;
		1258
		1259	return 0 unless (ref $a) eq (ref $b);
		1260
		1261	if ("HASH" eq ref $a) {
		1262	my @ka = keys %$a;
		1263	my @kb = keys %$b;
		1264
		1265	return 0 if @ka != @kb;
		1266
		1267	for (0 .. $#ka) {
		1268	return 0 unless $ka[$_] eq $kb[$_];
		1269	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1270	}
		1271
		1272	} elsif ("ARRAY" eq ref $a) {
		1273
		1274	return 0 if @$a != @$b;
		1275
		1276	for (0 .. $#$a) {
		1277	return 0 unless _object_equal $a->[$_], $b->[$_];
		1278	}
		1279
		1280	} elsif ($a ne $b) {
		1281	return 0;
		1282	}
		1283
		1284	1
		1285	}
		1286
		1287	our $SLOW_MERGES;#d#
		1288	sub _can_merge {
462	my ($obj, $data) = @_;	1289	my ($ob1, $ob2) = @_;
463		1290
464	$data = from_json $data;	1291	++$SLOW_MERGES;#d#
465		1292
466	for (@$data) {	1293	# we do the slow way here
467	my ($name, $args) = @$_;	1294	return _object_equal $ob1, $ob2
468
469	$obj->attach ($name, %{$args || {} });
470	}
471	}	1295	}
472		1296
473	# basically do the same as instantiate, without calling instantiate
474	sub reattach {	1297	sub reattach {
		1298	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	1299	my ($obj) = @_;
		1300
		1301	# no longer needed after getting rid of delete_package?
		1302	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1303
476	my $registry = $obj->registry;	1304	my $registry = $obj->registry;
477		1305
478	@$registry = ();	1306	@$registry = ();
479		1307
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1308	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
484	for (@$attach) {	1312	for (@$attach) {
485	my ($klass, @attach) = @$_;	1313	my ($klass, @attach) = @$_;
486	_attach $registry, $klass, @attach;	1314	_attach $registry, $klass, @attach;
487	}	1315	}
488	} else {	1316	} else {
489	warn "object uses attachment '$name' that is not available, postponing.\n";	1317	info "object uses attachment '$name' that is not available, postponing.\n";
490	}
491	}
492	}
493
494	sub object_freezer_save {
495	my ($filename, $rdata, $objs) = @_;
496
497	if (length $$rdata) {
498	warn sprintf "saving %s (%d,%d)\n",
499	$filename, length $$rdata, scalar @$objs;
500
501	if (open my $fh, ">:raw", "$filename~") {
502	chmod SAVE_MODE, $fh;
503	syswrite $fh, $$rdata;
504	close $fh;
505
506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
509	close $fh;
510	rename "$filename.pst~", "$filename.pst";
511	} else {
512	unlink "$filename.pst";
513	}	1318	}
514
515	rename "$filename~", $filename;
516	} else {
517	warn "FATAL: $filename~: $!\n";
518	}
519	} else {
520	unlink $filename;
521	unlink "$filename.pst";
522	}	1319	}
523	}	1320	}
524		1321
525	sub object_freezer_as_string {	1322	cf::attachable->attach (
526	my ($rdata, $objs) = @_;
527
528	use Data::Dumper;
529
530	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	1323	prio => -1000000,
		1324	on_instantiate => sub {
		1325	my ($obj, $data) = @_;
		1326
		1327	$data = decode_json $data;
		1328
		1329	for (@$data) {
		1330	my ($name, $args) = @$_;
		1331
		1332	$obj->attach ($name, %{$args || {} });
		1333	}
		1334	},
		1335	on_reattach => \&reattach,
554	on_clone => sub {	1336	on_clone => sub {
555	my ($src, $dst) = @_;	1337	my ($src, $dst) = @_;
556		1338
557	@{$dst->registry} = @{$src->registry};	1339	@{$dst->registry} = @{$src->registry};
558		1340
…		…
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	1343	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	1344	if exists $src->{_attachment};
563	},	1345	},
564	);	1346	);
565		1347
		1348	sub object_freezer_save {
		1349	my ($filename, $rdata, $objs) = @_;
		1350
		1351	sync_job {
		1352	if (length $$rdata) {
		1353	utf8::decode (my $decname = $filename);
		1354	trace sprintf "saving %s (%d,%d)\n",
		1355	$decname, length $$rdata, scalar @$objs
		1356	if $VERBOSE_IO;
		1357
		1358	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1359	aio_chmod $fh, SAVE_MODE;
		1360	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1361	if ($cf::USE_FSYNC) {
		1362	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1363	aio_fsync $fh;
		1364	}
		1365	aio_close $fh;
		1366
		1367	if (@$objs) {
		1368	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1369	aio_chmod $fh, SAVE_MODE;
		1370	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1371	aio_write $fh, 0, (length $data), $data, 0;
		1372	if ($cf::USE_FSYNC) {
		1373	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1374	aio_fsync $fh;
		1375	}
		1376	aio_close $fh;
		1377	aio_rename "$filename.pst~", "$filename.pst";
		1378	}
		1379	} else {
		1380	aio_unlink "$filename.pst";
		1381	}
		1382
		1383	aio_rename "$filename~", $filename;
		1384
		1385	$filename =~ s%/[^/]+$%%;
		1386	aio_pathsync $filename if $cf::USE_FSYNC;
		1387	} else {
		1388	error "unable to save objects: $filename~: $!\n";
		1389	}
		1390	} else {
		1391	aio_unlink $filename;
		1392	aio_unlink "$filename.pst";
		1393	}
		1394	};
		1395	}
		1396
		1397	sub object_freezer_as_string {
		1398	my ($rdata, $objs) = @_;
		1399
		1400	use Data::Dumper;
		1401
		1402	$$rdata . Dumper $objs
		1403	}
		1404
		1405	sub object_thawer_load {
		1406	my ($filename) = @_;
		1407
		1408	my ($data, $av);
		1409
		1410	(aio_load $filename, $data) >= 0
		1411	or return;
		1412
		1413	unless (aio_stat "$filename.pst") {
		1414	(aio_load "$filename.pst", $av) >= 0
		1415	or return;
		1416
		1417	my $st = eval { Coro::Storable::thaw $av };
		1418	$av = $st->{objs};
		1419	}
		1420
		1421	utf8::decode (my $decname = $filename);
		1422	trace sprintf "loading %s (%d,%d)\n",
		1423	$decname, length $data, scalar @{$av || []}
		1424	if $VERBOSE_IO;
		1425
		1426	($data, $av)
		1427	}
		1428
		1429	=head2 COMMAND CALLBACKS
		1430
		1431	=over 4
		1432
		1433	=cut
		1434
566	#############################################################################	1435	#############################################################################
567	# command handling &c	1436	# command handling &c
568		1437
569	=item cf::register_command $name => \&callback($ob,$args);	1438	=item cf::register_command $name => \&callback($ob,$args)
570		1439
571	Register a callback for execution when the client sends the user command	1440	Register a callback for execution when the client sends the user command
572	$name.	1441	$name.
573		1442
574	=cut	1443	=cut
…		…
580	#warn "registering command '$name/$time' to '$caller'";	1449	#warn "registering command '$name/$time' to '$caller'";
581		1450
582	push @{ $COMMAND{$name} }, [$caller, $cb];	1451	push @{ $COMMAND{$name} }, [$caller, $cb];
583	}	1452	}
584		1453
585	=item cf::register_extcmd $name => \&callback($pl,$packet);	1454	=item cf::register_extcmd $name => \&callback($pl,@args)
586		1455
587	Register a callbackf ro execution when the client sends an extcmd packet.	1456	Register a callback for execution when the client sends an (synchronous)
		1457	extcmd packet. Ext commands will be processed in the order they are
		1458	received by the server, like other user commands. The first argument is
		1459	the logged-in player. Ext commands can only be processed after a player
		1460	has logged in successfully.
588		1461
589	If the callback returns something, it is sent back as if reply was being	1462	The values will be sent back to the client.
590	called.
591		1463
592	=cut	1464	=item cf::register_async_extcmd $name => \&callback($pl,$reply->(...),@args)
593		1465
		1466	Same as C<cf::register_extcmd>, but instead of returning values, the
		1467	callback needs to clal the C<$reply> function.
		1468
		1469	=item cf::register_exticmd $name => \&callback($ns,@args)
		1470
		1471	Register a callback for execution when the client sends an (asynchronous)
		1472	exticmd packet. Exti commands are processed by the server as soon as they
		1473	are received, i.e. out of order w.r.t. other commands. The first argument
		1474	is a client socket. Exti commands can be received anytime, even before
		1475	log-in.
		1476
		1477	The values will be sent back to the client.
		1478
		1479	=item cf::register_async_exticmd $name => \&callback($ns,$reply->(...),@args)
		1480
		1481	Same as C<cf::register_extcmd>, but instead of returning values, the
		1482	callback needs to clal the C<$reply> function.
		1483
		1484	=cut
		1485
594	sub register_extcmd {	1486	sub register_extcmd($$) {
595	my ($name, $cb) = @_;	1487	my ($name, $cb) = @_;
596		1488
597	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";
599
600	$EXTCMD{$name} = [$cb, $caller];	1489	$EXTCMD{$name} = $cb;
601	}	1490	}
		1491
		1492	sub register_async_extcmd($$) {
		1493	my ($name, $cb) = @_;
		1494
		1495	$EXTACMD{$name} = $cb;
		1496	}
		1497
		1498	sub register_exticmd($$) {
		1499	my ($name, $cb) = @_;
		1500
		1501	$EXTICMD{$name} = $cb;
		1502	}
		1503
		1504	sub register_async_exticmd($$) {
		1505	my ($name, $cb) = @_;
		1506
		1507	$EXTIACMD{$name} = $cb;
		1508	}
		1509
		1510	use File::Glob ();
602		1511
603	cf::player->attach (	1512	cf::player->attach (
604	on_command => sub {	1513	on_unknown_command => sub {
605	my ($pl, $name, $params) = @_;	1514	my ($pl, $name, $params) = @_;
606		1515
607	my $cb = $COMMAND{$name}	1516	my $cb = $COMMAND{$name}
608	or return;	1517	or return;
609		1518
…		…
614	cf::override;	1523	cf::override;
615	},	1524	},
616	on_extcmd => sub {	1525	on_extcmd => sub {
617	my ($pl, $buf) = @_;	1526	my ($pl, $buf) = @_;
618		1527
619	my $msg = eval { from_json $buf };	1528	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
620		1529
621	if (ref $msg) {	1530	if (ref $msg) {
		1531	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		1532
622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1533	if (my $cb = $EXTACMD{$type}) {
623	if (my %reply = $cb->[0]->($pl, $msg)) {	1534	$cb->(
624	$pl->ext_reply ($msg->{msgid}, %reply);	1535	$pl,
		1536	sub {
		1537	$pl->ext_msg ("reply-$reply", @_)
		1538	if $reply;
		1539	},
		1540	@payload
		1541	);
		1542	} else {
		1543	my @reply;
		1544
		1545	if (my $cb = $EXTCMD{$type}) {
		1546	@reply = $cb->($pl, @payload);
625	}	1547	}
		1548
		1549	$pl->ext_msg ("reply-$reply", @reply)
		1550	if $reply;
626	}	1551	}
		1552
627	} else {	1553	} else {
628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1554	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
629	}	1555	}
630		1556
631	cf::override;	1557	cf::override;
632	},	1558	},
633	);	1559	);
634		1560
635	sub register {	1561	# "readahead" all extensions
636	my ($base, $pkg) = @_;
637
638	#TODO
639	}
640
641	sub load_extension {	1562	sub cache_extensions {
642	my ($path) = @_;	1563	my $grp = IO::AIO::aio_group;
643		1564
644	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1565	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
645	my $base = $1;	1566	for (grep /\.ext$/, @{$_[0]}) {
646	my $pkg = $1;	1567	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
647	$pkg =~ s/[^[:word:]]/_/g;
648	$pkg = "ext::$pkg";
649
650	warn "loading '$path' into '$pkg'\n";
651
652	open my $fh, "<:utf8", $path
653	or die "$path: $!";
654
655	my $source =
656	"package $pkg; use strict; use utf8;\n"
657	. "#line 1 \"$path\"\n{\n"
658	. (do { local $/; <$fh> })
659	. "\n};\n1";
660
661	eval $source
662	or die $@ ? "$path: $@\n"
663	: "extension disabled.\n";
664
665	push @exts, $pkg;
666	$ext_pkg{$base} = $pkg;
667
668	# no strict 'refs';
669	# @{"$pkg\::ISA"} = ext::;
670
671	register $base, $pkg;
672	}
673
674	sub unload_extension {
675	my ($pkg) = @_;
676
677	warn "removing extension $pkg\n";
678
679	# remove hooks
680	#TODO
681	# for my $idx (0 .. $#PLUGIN_EVENT) {
682	# delete $hook[$idx]{$pkg};
683	# }
684
685	# remove commands
686	for my $name (keys %COMMAND) {
687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
688
689	if (@cb) {
690	$COMMAND{$name} = \@cb;
691	} else {
692	delete $COMMAND{$name};
693	}	1568	}
694	}	1569	};
695		1570
696	# remove extcmds	1571	$grp
697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1572	}
698	delete $EXTCMD{$name};
699	}
700		1573
701	if (my $cb = $pkg->can ("unload")) {	1574	sub _ext_cfg_reg($$$$) {
702	eval {	1575	my ($rvar, $varname, $cfgname, $default) = @_;
703	$cb->($pkg);
704	1
705	} or warn "$pkg unloaded, but with errors: $@";
706	}
707		1576
708	Symbol::delete_package $pkg;	1577	$cfgname = lc $varname
		1578	unless length $cfgname;
		1579
		1580	$EXT_CFG{$cfgname} = [$rvar, $default];
		1581
		1582	$$rvar = exists $CFG{$cfgname} ? $CFG{$cfgname} : $default;
709	}	1583	}
710		1584
711	sub load_extensions {	1585	sub load_extensions {
		1586	info "loading extensions...";
		1587
		1588	%EXT_CFG = ();
		1589
		1590	cf::sync_job {
		1591	my %todo;
		1592
712	for my $ext (<$LIBDIR/*.ext>) {	1593	for my $path (<$LIBDIR/*.ext>) {
713	next unless -r $ext;	1594	next unless -r $path;
714	eval {	1595
715	load_extension $ext;	1596	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1597	my $base = $1;
		1598	my $pkg = $1;
		1599	$pkg =~ s/[^[:word:]]/_/g;
		1600	$pkg = "ext::$pkg";
		1601
		1602	open my $fh, "<:utf8", $path
		1603	or die "$path: $!";
		1604
		1605	my $source = do { local $/; <$fh> };
		1606
		1607	my %ext = (
		1608	path => $path,
		1609	base => $base,
		1610	pkg => $pkg,
		1611	);
		1612
		1613	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1614	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1615
		1616	$ext{source} =
		1617	"package $pkg; use common::sense;\n"
		1618	. "#line 1 \"$path\"\n{\n"
		1619	. $source
		1620	. "\n};\n1";
		1621
		1622	$todo{$base} = \%ext;
		1623	}
		1624
		1625	my $pass = 0;
		1626	my %done;
		1627	while (%todo) {
		1628	my $progress;
		1629
		1630	++$pass;
		1631
		1632	ext:
		1633	while (my ($k, $v) = each %todo) {
		1634	for (split /,\s*/, $v->{meta}{depends}) {
		1635	next ext
		1636	unless exists $done{$_};
		1637	}
		1638
		1639	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1640
		1641	my $source = $v->{source};
		1642
		1643	# support "CONF varname :confname = default" pseudo-statements
		1644	$source =~ s{
		1645	^ CONF \s+ ([^\s:=]+) \s* (?:: \s* ([^\s:=]+) \s* )? = ([^\n#]+)
		1646	}{
		1647	"our \$$1; BEGIN { cf::_ext_cfg_reg \\\$$1, q\x00$1\x00, q\x00$2\x00, $3 }";
		1648	}gmxe;
		1649
		1650	my $active = eval $source;
		1651
		1652	if (length $@) {
		1653	error "$v->{path}: $@\n";
		1654
		1655	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1656	if exists $v->{meta}{mandatory};
		1657
		1658	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1659	delete $todo{$k};
		1660	} else {
		1661	$done{$k} = delete $todo{$k};
		1662	push @EXTS, $v->{pkg};
		1663	$progress = 1;
		1664
		1665	info "$v->{base}: extension inactive.\n"
		1666	unless $active;
		1667	}
716	1	1668	}
717	} or warn "$ext not loaded: $@";	1669
		1670	unless ($progress) {
		1671	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1672
		1673	while (my ($k, $v) = each %todo) {
		1674	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1675	if exists $v->{meta}{mandatory};
		1676	}
		1677
		1678	last;
		1679	}
		1680	}
718	}	1681	};
719	}	1682	}
720		1683
721	#############################################################################	1684	#############################################################################
722	# load/save/clean perl data associated with a map
723		1685
724	*cf::mapsupport::on_clean = sub {	1686	=back
		1687
		1688	=head2 CORE EXTENSIONS
		1689
		1690	Functions and methods that extend core deliantra objects.
		1691
		1692	=cut
		1693
		1694	package cf::player;
		1695
		1696	use Coro::AIO;
		1697
		1698	=head3 cf::player
		1699
		1700	=over 4
		1701
		1702	=item cf::player::num_playing
		1703
		1704	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1705
		1706	=cut
		1707
		1708	sub num_playing {
		1709	scalar grep
		1710	$_->ob->map
		1711	&& !$_->hidden
		1712	&& !$_->ob->flag (cf::FLAG_WIZ),
		1713	cf::player::list
		1714	}
		1715
		1716	=item cf::player::find $login
		1717
		1718	Returns the given player object, loading it if necessary (might block).
		1719
		1720	=cut
		1721
		1722	sub playerdir($) {
		1723	"$PLAYERDIR/"
		1724	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1725	}
		1726
		1727	sub path($) {
		1728	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1729
		1730	(playerdir $login) . "/playerdata"
		1731	}
		1732
		1733	sub find_active($) {
		1734	$cf::PLAYER{$_[0]}
		1735	and $cf::PLAYER{$_[0]}->active
		1736	and $cf::PLAYER{$_[0]}
		1737	}
		1738
		1739	sub exists($) {
725	my ($map) = @_;	1740	my ($login) = @_;
726		1741
727	my $path = $map->tmpname;	1742	$cf::PLAYER{$login}
728	defined $path or return;	1743	or !aio_stat path $login
729
730	unlink "$path.pst";
731	};
732
733	cf::map->attach (prio => -10000, package => cf::mapsupport::);
734
735	#############################################################################
736	# load/save perl data associated with player->ob objects
737
738	sub all_objects(@) {
739	@_, map all_objects ($_->inv), @_
740	}	1744	}
741		1745
742	# TODO: compatibility cruft, remove when no longer needed	1746	sub find($) {
		1747	return $cf::PLAYER{$_[0]} || do {
		1748	my $login = $_[0];
		1749
		1750	my $guard = cf::lock_acquire "user_find:$login";
		1751
		1752	$cf::PLAYER{$_[0]} || do {
		1753	# rename old playerfiles to new ones
		1754	#TODO: remove when no longer required
		1755	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1756	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1757	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1758	aio_unlink +(playerdir $login) . "/$login.pl";
		1759
		1760	my $f = new_from_file cf::object::thawer path $login
		1761	or return;
		1762
		1763	my $pl = cf::player::load_pl $f
		1764	or return;
		1765
		1766	local $cf::PLAYER_LOADING{$login} = $pl;
		1767	$f->resolve_delayed_derefs;
		1768	$cf::PLAYER{$login} = $pl
		1769	}
		1770	}
		1771	}
		1772
743	cf::player->attach (	1773	cf::player->attach (
744	on_load => sub {	1774	on_load => sub {
745	my ($pl, $path) = @_;	1775	my ($pl, $path) = @_;
746		1776
747	for my $o (all_objects $pl->ob) {	1777	# restore slots saved in save, below
748	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1778	my $slots = delete $pl->{_slots};
749	$o->set_ob_key_value ("_perl_data");
750		1779
751	%$o = %{ Storable::thaw pack "H*", $value };	1780	$pl->ob->current_weapon ($slots->[0]);
752	}	1781	$pl->combat_ob ($slots->[1]);
753	}	1782	$pl->ranged_ob ($slots->[2]);
754	},	1783	},
755	);	1784	);
756		1785
757	#############################################################################	1786	sub save($) {
		1787	my ($pl) = @_;
758		1788
759	=head2 CORE EXTENSIONS	1789	return if $pl->{deny_save};
760		1790
761	Functions and methods that extend core crossfire objects.	1791	my $path = path $pl;
		1792	my $guard = cf::lock_acquire "user_save:$path";
762		1793
763	=head3 cf::player	1794	return if $pl->{deny_save};
		1795
		1796	aio_mkdir playerdir $pl, 0770;
		1797	$pl->{last_save} = $cf::RUNTIME;
		1798
		1799	cf::get_slot 0.01;
		1800
		1801	# save slots, to be restored later
		1802	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1803
		1804	$pl->save_pl ($path);
		1805	cf::cede_to_tick;
		1806	}
		1807
		1808	sub new($) {
		1809	my ($login) = @_;
		1810
		1811	my $self = create;
		1812
		1813	$self->ob->name ($login);
		1814	$self->{deny_save} = 1;
		1815
		1816	$cf::PLAYER{$login} = $self;
		1817
		1818	$self
		1819	}
		1820
		1821	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1822
		1823	=cut
		1824
		1825	sub send_msg {
		1826	my $ns = shift->ns
		1827	or return;
		1828	$ns->send_msg (@_);
		1829	}
		1830
		1831	=item $pl->quit_character
		1832
		1833	Nukes the player without looking back. If logged in, the connection will
		1834	be destroyed. May block for a long time.
		1835
		1836	=cut
		1837
		1838	sub quit_character {
		1839	my ($pl) = @_;
		1840
		1841	my $name = $pl->ob->name;
		1842
		1843	$pl->{deny_save} = 1;
		1844	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1845
		1846	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1847	$pl->deactivate;
		1848
		1849	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1850	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1851	ext::highscore::check ($pl->ob);
		1852
		1853	$pl->ns->destroy if $pl->ns;
		1854
		1855	my $path = playerdir $pl;
		1856	my $temp = "$path~$cf::RUNTIME~deleting~";
		1857	aio_rename $path, $temp;
		1858	delete $cf::PLAYER{$pl->ob->name};
		1859	$pl->destroy;
		1860
		1861	my $prefix = qr<^~\Q$name\E/>;
		1862
		1863	# nuke player maps
		1864	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1865
		1866	IO::AIO::aio_rmtree $temp;
		1867	}
		1868
		1869	=item $pl->kick
		1870
		1871	Kicks a player out of the game. This destroys the connection.
		1872
		1873	=cut
		1874
		1875	sub kick {
		1876	my ($pl, $kicker) = @_;
		1877
		1878	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1879	$pl->killer ("kicked");
		1880	$pl->ns->destroy;
		1881	}
		1882
		1883	=item cf::player::list_logins
		1884
		1885	Returns am arrayref of all valid playernames in the system, can take a
		1886	while and may block, so not sync_job-capable, ever.
		1887
		1888	=cut
		1889
		1890	sub list_logins {
		1891	my $dirs = aio_readdir $PLAYERDIR
		1892	or return [];
		1893
		1894	my @logins;
		1895
		1896	for my $login (@$dirs) {
		1897	my $path = path $login;
		1898
		1899	# a .pst is a dead give-away for a valid player
		1900	# if no pst file found, open and chekc for blocked users
		1901	if (aio_stat "$path.pst") {
		1902	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1903	aio_read $fh, 0, 512, my $buf, 0 or next;
		1904	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1905	}
		1906
		1907	utf8::decode $login;
		1908	push @logins, $login;
		1909	}
		1910
		1911	\@logins
		1912	}
		1913
		1914	=item $player->maps
		1915
		1916	=item cf::player::maps $login
		1917
		1918	Returns an arrayref of map paths that are private for this
		1919	player. May block.
		1920
		1921	=cut
		1922
		1923	sub maps($) {
		1924	my ($pl) = @_;
		1925
		1926	$pl = ref $pl ? $pl->ob->name : $pl;
		1927
		1928	my $files = aio_readdir playerdir $pl
		1929	or return;
		1930
		1931	my @paths;
		1932
		1933	for (@$files) {
		1934	utf8::decode $_;
		1935	next if /\.(?:pl|pst)$/;
		1936	next unless /^$PATH_SEP/o;
		1937
		1938	push @paths, cf::map::normalise "~$pl/$_";
		1939	}
		1940
		1941	\@paths
		1942	}
		1943
		1944	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1945
		1946	Expand deliantra pod fragments into protocol xml.
		1947
		1948	=item $player->ext_msg ($type, @msg)
		1949
		1950	Sends an ext event to the client.
		1951
		1952	=cut
		1953
		1954	sub ext_msg($$@) {
		1955	my ($self, $type, @msg) = @_;
		1956
		1957	$self->ns->ext_msg ($type, @msg);
		1958	}
		1959
		1960	=head3 cf::region
764		1961
765	=over 4	1962	=over 4
766		1963
767	=item cf::player::exists $login
768
769	Returns true when the given account exists.
770
771	=cut	1964	=cut
772		1965
773	sub cf::player::exists($) {	1966	package cf::region;
774	cf::player::find $_[0]
775	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
776	}
777		1967
778	=item $player->ext_reply ($msgid, $msgtype, %msg)	1968	=item cf::region::find_by_path $path
779		1969
780	Sends an ext reply to the player.	1970	Tries to decuce the likely region for a map knowing only its path.
781		1971
782	=cut	1972	=cut
783		1973
784	sub cf::player::ext_reply($$$%) {	1974	sub find_by_path($) {
		1975	my ($path) = @_;
		1976
		1977	$path =~ s/^~[^\/]*//; # skip ~login
		1978
		1979	my ($match, $specificity);
		1980
		1981	for my $region (list) {
		1982	if ($region->{match} && $path =~ $region->{match}) {
		1983	($match, $specificity) = ($region, $region->specificity)
		1984	if $region->specificity > $specificity;
		1985	}
		1986	}
		1987
		1988	$match
		1989	}
		1990
		1991	=back
		1992
		1993	=head3 cf::map
		1994
		1995	=over 4
		1996
		1997	=cut
		1998
		1999	package cf::map;
		2000
		2001	use Fcntl;
		2002	use Coro::AIO;
		2003
		2004	use overload
		2005	'""' => \&as_string,
		2006	fallback => 1;
		2007
		2008	our $MAX_RESET = 3600;
		2009	our $DEFAULT_RESET = 3000;
		2010
		2011	sub generate_random_map {
		2012	my ($self, $rmp) = @_;
		2013
		2014	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		2015
		2016	$self->_create_random_map ($rmp);
		2017	}
		2018
		2019	=item cf::map->register ($regex, $prio)
		2020
		2021	Register a handler for the map path matching the given regex at the
		2022	givne priority (higher is better, built-in handlers have priority 0, the
		2023	default).
		2024
		2025	=cut
		2026
		2027	sub register {
		2028	my (undef, $regex, $prio) = @_;
		2029	my $pkg = caller;
		2030
		2031	push @{"$pkg\::ISA"}, __PACKAGE__;
		2032
		2033	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		2034	}
		2035
		2036	# also paths starting with '/'
		2037	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		2038
		2039	sub thawer_merge {
785	my ($self, $id, %msg) = @_;	2040	my ($self, $merge) = @_;
786		2041
787	$msg{msgid} = $id;	2042	# we have to keep some variables in memory intact
		2043	local $self->{path};
		2044	local $self->{load_path};
788		2045
789	$self->send ("ext " . to_json \%msg);	2046	$self->SUPER::thawer_merge ($merge);
790	}	2047	}
		2048
		2049	sub normalise {
		2050	my ($path, $base) = @_;
		2051
		2052	$path = "$path"; # make sure it's a string
		2053
		2054	$path =~ s/\.map$//;
		2055
		2056	# map plan:
		2057	#
		2058	# /! non-realised random map exit (special hack!)
		2059	# {... are special paths that are not being touched
		2060	# ?xxx/... are special absolute paths
		2061	# ?random/... random maps
		2062	# /... normal maps
		2063	# ~user/... per-player map of a specific user
		2064
		2065	$path =~ s/$PATH_SEP/\//go;
		2066
		2067	# treat it as relative path if it starts with
		2068	# something that looks reasonable
		2069	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		2070	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		2071
		2072	$base =~ s{[^/]+/?$}{};
		2073	$path = "$base/$path";
		2074	}
		2075
		2076	for ($path) {
		2077	redo if s{/\.?/}{/};
		2078	redo if s{/[^/]+/\.\./}{/};
		2079	}
		2080
		2081	$path
		2082	}
		2083
		2084	sub new_from_path {
		2085	my (undef, $path, $base) = @_;
		2086
		2087	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2088
		2089	$path = normalise $path, $base;
		2090
		2091	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2092	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2093	my $self = bless cf::map::new, $pkg;
		2094	$self->{path} = $path; $self->path ($path);
		2095	$self->init; # pass $1 etc.
		2096	return $self;
		2097	}
		2098	}
		2099
		2100	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2101	()
		2102	}
		2103
		2104	# may re-bless or do other evil things
		2105	sub init {
		2106	my ($self) = @_;
		2107
		2108	$self
		2109	}
		2110
		2111	sub as_string {
		2112	my ($self) = @_;
		2113
		2114	"$self->{path}"
		2115	}
		2116
		2117	# the displayed name, this is a one way mapping
		2118	sub visible_name {
		2119	&as_string
		2120	}
		2121
		2122	# the original (read-only) location
		2123	sub load_path {
		2124	my ($self) = @_;
		2125
		2126	"$MAPDIR/$self->{path}.map"
		2127	}
		2128
		2129	# the temporary/swap location
		2130	sub save_path {
		2131	my ($self) = @_;
		2132
		2133	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2134	"$TMPDIR/$path.map"
		2135	}
		2136
		2137	# the unique path, undef == no special unique path
		2138	sub uniq_path {
		2139	my ($self) = @_;
		2140
		2141	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2142	"$UNIQUEDIR/$path"
		2143	}
		2144
		2145	sub decay_objects {
		2146	my ($self) = @_;
		2147
		2148	return if $self->{deny_reset};
		2149
		2150	$self->do_decay_objects;
		2151	}
		2152
		2153	sub unlink_save {
		2154	my ($self) = @_;
		2155
		2156	utf8::encode (my $save = $self->save_path);
		2157	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2158	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2159	}
		2160
		2161	sub load_header_from($) {
		2162	my ($self, $path) = @_;
		2163
		2164	utf8::encode $path;
		2165	my $f = new_from_file cf::object::thawer $path
		2166	or return;
		2167
		2168	$self->_load_header ($f)
		2169	or return;
		2170
		2171	local $MAP_LOADING{$self->{path}} = $self;
		2172	$f->resolve_delayed_derefs;
		2173
		2174	$self->{load_path} = $path;
		2175
		2176	1
		2177	}
		2178
		2179	# used to laod the header of an original map
		2180	sub load_header_orig {
		2181	my ($self) = @_;
		2182
		2183	$self->load_header_from ($self->load_path)
		2184	}
		2185
		2186	# used to laod the header of an instantiated map
		2187	sub load_header_temp {
		2188	my ($self) = @_;
		2189
		2190	$self->load_header_from ($self->save_path)
		2191	}
		2192
		2193	# called after loading the header from an instantiated map
		2194	sub prepare_temp {
		2195	my ($self) = @_;
		2196
		2197	$self->last_access ((delete $self->{last_access})
		2198	|| $cf::RUNTIME); #d#
		2199	# safety
		2200	$self->{instantiate_time} = $cf::RUNTIME
		2201	if $self->{instantiate_time} > $cf::RUNTIME;
		2202	}
		2203
		2204	# called after loading the header from an original map
		2205	sub prepare_orig {
		2206	my ($self) = @_;
		2207
		2208	$self->{load_original} = 1;
		2209	$self->{instantiate_time} = $cf::RUNTIME;
		2210	$self->last_access ($cf::RUNTIME);
		2211	$self->instantiate;
		2212	}
		2213
		2214	sub load_header {
		2215	my ($self) = @_;
		2216
		2217	if ($self->load_header_temp) {
		2218	$self->prepare_temp;
		2219	} else {
		2220	$self->load_header_orig
		2221	or return;
		2222	$self->prepare_orig;
		2223	}
		2224
		2225	$self->{deny_reset} = 1
		2226	if $self->no_reset;
		2227
		2228	$self->default_region (cf::region::find_by_path $self->{path})
		2229	unless $self->default_region;
		2230
		2231	1
		2232	}
		2233
		2234	sub find;
		2235	sub find {
		2236	my ($path, $origin) = @_;
		2237
		2238	cf::cede_to_tick;
		2239
		2240	$path = normalise $path, $origin;
		2241
		2242	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2243	my $guard2 = cf::lock_acquire "map_find:$path";
		2244
		2245	$cf::MAP{$path} || do {
		2246	my $map = new_from_path cf::map $path
		2247	or return;
		2248
		2249	$map->{last_save} = $cf::RUNTIME;
		2250
		2251	$map->load_header
		2252	or return;
		2253
		2254	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2255	# doing this can freeze the server in a sync job, obviously
		2256	#$cf::WAIT_FOR_TICK->wait;
		2257	undef $guard2;
		2258	undef $guard1;
		2259	$map->reset;
		2260	return find $path;
		2261	}
		2262
		2263	$cf::MAP{$path} = $map
		2264	}
		2265	}
		2266
		2267	sub pre_load { }
		2268	#sub post_load { } # XS
		2269
		2270	sub load {
		2271	my ($self) = @_;
		2272
		2273	local $self->{deny_reset} = 1; # loading can take a long time
		2274
		2275	my $path = $self->{path};
		2276
		2277	{
		2278	my $guard = cf::lock_acquire "map_data:$path";
		2279
		2280	return unless $self->valid;
		2281	return unless $self->state == cf::MAP_SWAPPED;
		2282
		2283	$self->alloc;
		2284
		2285	$self->pre_load;
		2286	cf::cede_to_tick;
		2287
		2288	if (exists $self->{load_path}) {
		2289	my $f = new_from_file cf::object::thawer $self->{load_path};
		2290	$f->skip_block;
		2291	$self->_load_objects ($f)
		2292	or return;
		2293
		2294	$self->post_load_original
		2295	if delete $self->{load_original};
		2296
		2297	if (my $uniq = $self->uniq_path) {
		2298	utf8::encode $uniq;
		2299	unless (aio_stat $uniq) {
		2300	if (my $f = new_from_file cf::object::thawer $uniq) {
		2301	$self->clear_unique_items;
		2302	$self->_load_objects ($f);
		2303	$f->resolve_delayed_derefs;
		2304	}
		2305	}
		2306	}
		2307
		2308	$f->resolve_delayed_derefs;
		2309	} else {
		2310	$self->post_load_original
		2311	if delete $self->{load_original};
		2312	}
		2313
		2314	$self->state (cf::MAP_INACTIVE);
		2315
		2316	cf::cede_to_tick;
		2317	# now do the right thing for maps
		2318	$self->link_multipart_objects;
		2319	$self->difficulty ($self->estimate_difficulty)
		2320	unless $self->difficulty;
		2321	cf::cede_to_tick;
		2322
		2323	unless ($self->{deny_activate}) {
		2324	$self->decay_objects;
		2325	$self->fix_auto_apply;
		2326	$self->update_buttons;
		2327	cf::cede_to_tick;
		2328	#$self->activate; # no longer activate maps automatically
		2329	}
		2330
		2331	$self->{last_save} = $cf::RUNTIME;
		2332	$self->last_access ($cf::RUNTIME);
		2333	}
		2334
		2335	$self->post_load;
		2336
		2337	1
		2338	}
		2339
		2340	# customize the map for a given player, i.e.
		2341	# return the _real_ map. used by e.g. per-player
		2342	# maps to change the path to ~playername/mappath
		2343	sub customise_for {
		2344	my ($self, $ob) = @_;
		2345
		2346	return find "~" . $ob->name . "/" . $self->{path}
		2347	if $self->per_player;
		2348
		2349	# return find "?party/" . $ob->name . "/" . $self->{path}
		2350	# if $self->per_party;
		2351
		2352	$self
		2353	}
		2354
		2355	sub find_sync {
		2356	my ($path, $origin) = @_;
		2357
		2358	# it's a bug to call this from the main context
		2359	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2360	if $Coro::current == $Coro::main;
		2361
		2362	find $path, $origin
		2363	}
		2364
		2365	sub do_load_sync {
		2366	my ($map) = @_;
		2367
		2368	# it's a bug to call this from the main context
		2369	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2370	if $Coro::current == $Coro::main;
		2371
		2372	$map->load;
		2373	}
		2374
		2375	our %MAP_PREFETCH;
		2376	our $MAP_PREFETCHER = undef;
		2377
		2378	sub find_async {
		2379	my ($path, $origin, $load) = @_;
		2380
		2381	$path = normalise $path, $origin;
		2382
		2383	if (my $map = $cf::MAP{$path}) {
		2384	return $map if !$load || $map->linkable;
		2385	}
		2386
		2387	$MAP_PREFETCH{$path} |= $load;
		2388
		2389	$MAP_PREFETCHER ||= cf::async {
		2390	$Coro::current->{desc} = "map prefetcher";
		2391
		2392	while (%MAP_PREFETCH) {
		2393	while (my ($k, $v) = each %MAP_PREFETCH) {
		2394	if (my $map = find $k) {
		2395	$map->load if $v;
		2396	}
		2397
		2398	delete $MAP_PREFETCH{$k};
		2399	}
		2400	}
		2401	undef $MAP_PREFETCHER;
		2402	};
		2403	$MAP_PREFETCHER->prio (6);
		2404
		2405	()
		2406	}
		2407
		2408	# common code, used by both ->save and ->swapout
		2409	sub _save {
		2410	my ($self) = @_;
		2411
		2412	$self->{last_save} = $cf::RUNTIME;
		2413
		2414	return unless $self->dirty;
		2415
		2416	my $save = $self->save_path; utf8::encode $save;
		2417	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2418
		2419	$self->{load_path} = $save;
		2420
		2421	return if $self->{deny_save};
		2422
		2423	local $self->{last_access} = $self->last_access;#d#
		2424
		2425	cf::async {
		2426	$Coro::current->{desc} = "map player save";
		2427	$_->contr->save for $self->players;
		2428	};
		2429
		2430	cf::get_slot 0.02;
		2431
		2432	if ($uniq) {
		2433	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2434	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2435	} else {
		2436	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2437	}
		2438	}
		2439
		2440	sub save {
		2441	my ($self) = @_;
		2442
		2443	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2444
		2445	$self->_save;
		2446	}
		2447
		2448	sub swap_out {
		2449	my ($self) = @_;
		2450
		2451	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2452
		2453	return if !$self->linkable;
		2454	return if $self->{deny_save};
		2455	return if $self->players;
		2456
		2457	# first deactivate the map and "unlink" it from the core
		2458	$self->deactivate;
		2459	$_->clear_links_to ($self) for values %cf::MAP;
		2460	$self->state (cf::MAP_SWAPPED);
		2461
		2462	# then atomically save
		2463	$self->_save;
		2464
		2465	# then free the map
		2466	$self->clear;
		2467	}
		2468
		2469	sub reset_at {
		2470	my ($self) = @_;
		2471
		2472	# TODO: safety, remove and allow resettable per-player maps
		2473	return 1e99 if $self->{deny_reset};
		2474
		2475	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2476	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2477
		2478	$time + $to
		2479	}
		2480
		2481	sub should_reset {
		2482	my ($self) = @_;
		2483
		2484	$self->reset_at <= $cf::RUNTIME
		2485	}
		2486
		2487	sub reset {
		2488	my ($self) = @_;
		2489
		2490	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2491
		2492	return if $self->players;
		2493
		2494	cf::trace "resetting map ", $self->path, "\n";
		2495
		2496	$self->state (cf::MAP_SWAPPED);
		2497
		2498	# need to save uniques path
		2499	unless ($self->{deny_save}) {
		2500	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2501
		2502	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2503	if $uniq;
		2504	}
		2505
		2506	delete $cf::MAP{$self->path};
		2507
		2508	$self->deactivate;
		2509	$_->clear_links_to ($self) for values %cf::MAP;
		2510	$self->clear;
		2511
		2512	$self->unlink_save;
		2513	$self->destroy;
		2514	}
		2515
		2516	my $nuke_counter = "aaaa";
		2517
		2518	sub nuke {
		2519	my ($self) = @_;
		2520
		2521	{
		2522	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2523
		2524	delete $cf::MAP{$self->path};
		2525
		2526	$self->unlink_save;
		2527
		2528	bless $self, "cf::map::wrap";
		2529	delete $self->{deny_reset};
		2530	$self->{deny_save} = 1;
		2531	$self->reset_timeout (1);
		2532	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2533
		2534	$cf::MAP{$self->path} = $self;
		2535	}
		2536
		2537	$self->reset; # polite request, might not happen
		2538	}
		2539
		2540	=item $maps = cf::map::tmp_maps
		2541
		2542	Returns an arrayref with all map paths of currently instantiated and saved
		2543	maps. May block.
		2544
		2545	=cut
		2546
		2547	sub tmp_maps() {
		2548	[
		2549	map {
		2550	utf8::decode $_;
		2551	/\.map$/
		2552	? normalise $_
		2553	: ()
		2554	} @{ aio_readdir $TMPDIR or [] }
		2555	]
		2556	}
		2557
		2558	=item $maps = cf::map::random_maps
		2559
		2560	Returns an arrayref with all map paths of currently instantiated and saved
		2561	random maps. May block.
		2562
		2563	=cut
		2564
		2565	sub random_maps() {
		2566	[
		2567	map {
		2568	utf8::decode $_;
		2569	/\.map$/
		2570	? normalise "?random/$_"
		2571	: ()
		2572	} @{ aio_readdir $RANDOMDIR or [] }
		2573	]
		2574	}
		2575
		2576	=item cf::map::unique_maps
		2577
		2578	Returns an arrayref of paths of all shared maps that have
		2579	instantiated unique items. May block.
		2580
		2581	=cut
		2582
		2583	sub unique_maps() {
		2584	[
		2585	map {
		2586	utf8::decode $_;
		2587	s/\.map$//; # TODO future compatibility hack
		2588	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2589	? ()
		2590	: normalise $_
		2591	} @{ aio_readdir $UNIQUEDIR or [] }
		2592	]
		2593	}
		2594
		2595	=item cf::map::static_maps
		2596
		2597	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2598	file in the shared directory excluding F</styles> and F</editor>). May
		2599	block.
		2600
		2601	=cut
		2602
		2603	sub static_maps() {
		2604	my @dirs = "";
		2605	my @maps;
		2606
		2607	while (@dirs) {
		2608	my $dir = shift @dirs;
		2609
		2610	next if $dir eq "/styles" || $dir eq "/editor";
		2611
		2612	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2613	or return;
		2614
		2615	for (@$files) {
		2616	s/\.map$// or next;
		2617	utf8::decode $_;
		2618	push @maps, "$dir/$_";
		2619	}
		2620
		2621	push @dirs, map "$dir/$_", @$dirs;
		2622	}
		2623
		2624	\@maps
		2625	}
		2626
		2627	=back
		2628
		2629	=head3 cf::object
		2630
		2631	=cut
		2632
		2633	package cf::object;
		2634
		2635	=over 4
		2636
		2637	=item $ob->inv_recursive
		2638
		2639	Returns the inventory of the object I<and> their inventories, recursively,
		2640	but I<not> the object itself.
		2641
		2642	=cut
		2643
		2644	sub inv_recursive_;
		2645	sub inv_recursive_ {
		2646	map { $_, inv_recursive_ $_->inv } @_
		2647	}
		2648
		2649	sub inv_recursive {
		2650	inv_recursive_ inv $_[0]
		2651	}
		2652
		2653	=item $ref = $ob->ref
		2654
		2655	Creates and returns a persistent reference to an object that can be stored as a string.
		2656
		2657	=item $ob = cf::object::deref ($refstring)
		2658
		2659	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2660	even if the object actually exists. May block.
		2661
		2662	=cut
		2663
		2664	sub deref {
		2665	my ($ref) = @_;
		2666
		2667	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2668	my ($uuid, $name) = ($1, $2);
		2669	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2670	or return;
		2671	$pl->ob->uuid eq $uuid
		2672	or return;
		2673
		2674	$pl->ob
		2675	} else {
		2676	warn "$ref: cannot resolve object reference\n";
		2677	undef
		2678	}
		2679	}
		2680
		2681	package cf;
791		2682
792	=back	2683	=back
793		2684
794	=head3 cf::object::player	2685	=head3 cf::object::player
795		2686
…		…
800	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2691	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
801	can be C<undef>. Does the right thing when the player is currently in a	2692	can be C<undef>. Does the right thing when the player is currently in a
802	dialogue with the given NPC character.	2693	dialogue with the given NPC character.
803		2694
804	=cut	2695	=cut
		2696
		2697	our $SAY_CHANNEL = {
		2698	id => "say",
		2699	title => "Map",
		2700	reply => "say ",
		2701	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2702	};
		2703
		2704	our $CHAT_CHANNEL = {
		2705	id => "chat",
		2706	title => "Chat",
		2707	reply => "chat ",
		2708	tooltip => "Player chat and shouts, global to the server.",
		2709	};
805		2710
806	# rough implementation of a future "reply" method that works	2711	# rough implementation of a future "reply" method that works
807	# with dialog boxes.	2712	# with dialog boxes.
808	#TODO: the first argument must go, split into a $npc->reply_to ( method	2713	#TODO: the first argument must go, split into a $npc->reply_to ( method
809	sub cf::object::player::reply($$$;$) {	2714	sub cf::object::player::reply($$$;$) {
…		…
811		2716
812	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2717	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
813		2718
814	if ($self->{record_replies}) {	2719	if ($self->{record_replies}) {
815	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2720	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2721
816	} else {	2722	} else {
		2723	my $pl = $self->contr;
		2724
		2725	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2726	my $dialog = $pl->{npc_dialog};
		2727	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2728
		2729	} else {
817	$msg = $npc->name . " says: $msg" if $npc;	2730	$msg = $npc->name . " says: $msg" if $npc;
818	$self->message ($msg, $flags);	2731	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2732	}
819	}	2733	}
		2734	}
		2735
		2736	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2737
		2738	=cut
		2739
		2740	sub cf::object::send_msg {
		2741	my $pl = shift->contr
		2742	or return;
		2743	$pl->send_msg (@_);
820	}	2744	}
821		2745
822	=item $player_object->may ("access")	2746	=item $player_object->may ("access")
823		2747
824	Returns wether the given player is authorized to access resource "access"	2748	Returns wether the given player is authorized to access resource "access"
…		…
833	(ref $cf::CFG{"may_$access"}	2757	(ref $cf::CFG{"may_$access"}
834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2758	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
835	: $cf::CFG{"may_$access"})	2759	: $cf::CFG{"may_$access"})
836	}	2760	}
837		2761
		2762	=item $player_object->enter_link
		2763
		2764	Freezes the player and moves him/her to a special map (C<{link}>).
		2765
		2766	The player should be reasonably safe there for short amounts of time (e.g.
		2767	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2768	though, as the player cannot control the character while it is on the link
		2769	map.
		2770
		2771	Will never block.
		2772
		2773	=item $player_object->leave_link ($map, $x, $y)
		2774
		2775	Moves the player out of the special C<{link}> map onto the specified
		2776	map. If the map is not valid (or omitted), the player will be moved back
		2777	to the location he/she was before the call to C<enter_link>, or, if that
		2778	fails, to the emergency map position.
		2779
		2780	Might block.
		2781
		2782	=cut
		2783
		2784	sub link_map {
		2785	unless ($LINK_MAP) {
		2786	$LINK_MAP = cf::map::find "{link}"
		2787	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2788	$LINK_MAP->load;
		2789	}
		2790
		2791	$LINK_MAP
		2792	}
		2793
		2794	sub cf::object::player::enter_link {
		2795	my ($self) = @_;
		2796
		2797	$self->deactivate_recursive;
		2798
		2799	++$self->{_link_recursion};
		2800
		2801	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2802
		2803	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2804	if $self->map && $self->map->{path} ne "{link}";
		2805
		2806	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2807	}
		2808
		2809	sub cf::object::player::leave_link {
		2810	my ($self, $map, $x, $y) = @_;
		2811
		2812	return unless $self->contr->active;
		2813
		2814	my $link_pos = delete $self->{_link_pos};
		2815
		2816	unless ($map) {
		2817	# restore original map position
		2818	($map, $x, $y) = @{ $link_pos || [] };
		2819	$map = cf::map::find $map;
		2820
		2821	unless ($map) {
		2822	($map, $x, $y) = @$EMERGENCY_POSITION;
		2823	$map = cf::map::find $map
		2824	or die "FATAL: cannot load emergency map\n";
		2825	}
		2826	}
		2827
		2828	($x, $y) = (-1, -1)
		2829	unless (defined $x) && (defined $y);
		2830
		2831	# use -1 or undef as default coordinates, not 0, 0
		2832	($x, $y) = ($map->enter_x, $map->enter_y)
		2833	if $x <= 0 && $y <= 0;
		2834
		2835	$map->load;
		2836
		2837	return unless $self->contr->active;
		2838
		2839	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2840	if ($self->enter_map ($map, $x, $y)) {
		2841	# entering was successful
		2842	delete $self->{_link_recursion};
		2843	# only activate afterwards, to support waiting in hooks
		2844	$self->activate_recursive;
		2845	}
		2846
		2847	}
		2848
		2849	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2850
		2851	Moves the player to the given map-path and coordinates by first freezing
		2852	her, loading and preparing them map, calling the provided $check callback
		2853	that has to return the map if sucecssful, and then unfreezes the player on
		2854	the new (success) or old (failed) map position. In either case, $done will
		2855	be called at the end of this process.
		2856
		2857	Note that $check will be called with a potentially non-loaded map, so if
		2858	it needs a loaded map it has to call C<< ->load >>.
		2859
		2860	=cut
		2861
		2862	our $GOTOGEN;
		2863
		2864	sub cf::object::player::goto {
		2865	my ($self, $path, $x, $y, $check, $done) = @_;
		2866
		2867	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2868	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2869	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2870	($path, $x, $y) = @$EMERGENCY_POSITION;
		2871	}
		2872
		2873	# do generation counting so two concurrent goto's will be executed in-order
		2874	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2875
		2876	$self->enter_link;
		2877
		2878	(async {
		2879	$Coro::current->{desc} = "player::goto $path $x $y";
		2880
		2881	# *tag paths override both path and x|y
		2882	if ($path =~ /^\*(.*)$/) {
		2883	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2884	my $ob = $obs[rand @obs];
		2885
		2886	# see if we actually can go there
		2887	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2888	$ob = $obs[rand @obs];
		2889	} else {
		2890	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2891	}
		2892	# else put us there anyways for now #d#
		2893
		2894	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2895	} else {
		2896	($path, $x, $y) = (undef, undef, undef);
		2897	}
		2898	}
		2899
		2900	my $map = eval {
		2901	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2902
		2903	if ($map) {
		2904	$map = $map->customise_for ($self);
		2905	$map = $check->($map, $x, $y, $self) if $check && $map;
		2906	} else {
		2907	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2908	}
		2909
		2910	$map
		2911	};
		2912
		2913	if ($@) {
		2914	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2915	LOG llevError | logBacktrace, Carp::longmess $@;
		2916	}
		2917
		2918	if ($gen == $self->{_goto_generation}) {
		2919	delete $self->{_goto_generation};
		2920	$self->leave_link ($map, $x, $y);
		2921	}
		2922
		2923	$done->($self) if $done;
		2924	})->prio (1);
		2925	}
		2926
		2927	=item $player_object->enter_exit ($exit_object)
		2928
		2929	=cut
		2930
		2931	sub parse_random_map_params {
		2932	my ($spec) = @_;
		2933
		2934	my $rmp = { # defaults
		2935	xsize => (cf::rndm 15, 40),
		2936	ysize => (cf::rndm 15, 40),
		2937	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2938	#layout => string,
		2939	};
		2940
		2941	for (split /\n/, $spec) {
		2942	my ($k, $v) = split /\s+/, $_, 2;
		2943
		2944	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2945	}
		2946
		2947	$rmp
		2948	}
		2949
		2950	sub prepare_random_map {
		2951	my ($exit) = @_;
		2952
		2953	# all this does is basically replace the /! path by
		2954	# a new random map path (?random/...) with a seed
		2955	# that depends on the exit object
		2956
		2957	my $rmp = parse_random_map_params $exit->msg;
		2958
		2959	if ($exit->map) {
		2960	$rmp->{region} = $exit->region->name;
		2961	$rmp->{origin_map} = $exit->map->path;
		2962	$rmp->{origin_x} = $exit->x;
		2963	$rmp->{origin_y} = $exit->y;
		2964
		2965	$exit->map->touch;
		2966	}
		2967
		2968	$rmp->{random_seed} ||= $exit->random_seed;
		2969
		2970	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2971	my $md5 = Digest::MD5::md5_hex $data;
		2972	my $meta = "$RANDOMDIR/$md5.meta";
		2973
		2974	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2975	aio_write $fh, 0, (length $data), $data, 0;
		2976	undef $fh;
		2977	aio_rename "$meta~", $meta;
		2978
		2979	my $slaying = "?random/$md5";
		2980
		2981	if ($exit->valid) {
		2982	$exit->slaying ("?random/$md5");
		2983	$exit->msg (undef);
		2984	}
		2985	}
		2986	}
		2987
		2988	sub cf::object::player::enter_exit {
		2989	my ($self, $exit) = @_;
		2990
		2991	return unless $self->type == cf::PLAYER;
		2992
		2993	$self->enter_link;
		2994
		2995	(async {
		2996	$Coro::current->{desc} = "enter_exit";
		2997
		2998	unless (eval {
		2999	$self->deactivate_recursive; # just to be sure
		3000
		3001	my $map = cf::map::normalise $exit->slaying, $exit->map;
		3002	my $x = $exit->stats->hp;
		3003	my $y = $exit->stats->sp;
		3004
		3005	# special map handling
		3006	my $slaying = $exit->slaying;
		3007
		3008	# special map handling
		3009	if ($slaying eq "/!") {
		3010	my $guard = cf::lock_acquire "exit_prepare:$exit";
		3011
		3012	prepare_random_map $exit
		3013	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		3014
		3015	$map = $exit->slaying;
		3016
		3017	} elsif ($slaying eq '!up') {
		3018	$map = $exit->map->tile_path (cf::TILE_UP);
		3019	$x = $exit->x;
		3020	$y = $exit->y;
		3021
		3022	} elsif ($slaying eq '!down') {
		3023	$map = $exit->map->tile_path (cf::TILE_DOWN);
		3024	$x = $exit->x;
		3025	$y = $exit->y;
		3026	}
		3027
		3028	$self->goto ($map, $x, $y);
		3029
		3030	# if exit is damned, update players death & WoR home-position
		3031	$self->contr->savebed ($map, $x, $y)
		3032	if $exit->flag (cf::FLAG_DAMNED);
		3033
		3034	1
		3035	}) {
		3036	$self->message ("Something went wrong deep within the deliantra server. "
		3037	. "I'll try to bring you back to the map you were before. "
		3038	. "Please report this to the dungeon master!",
		3039	cf::NDI_UNIQUE | cf::NDI_RED);
		3040
		3041	error "ERROR in enter_exit: $@";
		3042	$self->leave_link;
		3043	}
		3044	})->prio (1);
		3045	}
		3046
838	=head3 cf::client	3047	=head3 cf::client
839		3048
840	=over 4	3049	=over 4
841		3050
842	=item $client->send_drawinfo ($text, $flags)	3051	=item $client->send_drawinfo ($text, $flags)
…		…
848		3057
849	sub cf::client::send_drawinfo {	3058	sub cf::client::send_drawinfo {
850	my ($self, $text, $flags) = @_;	3059	my ($self, $text, $flags) = @_;
851		3060
852	utf8::encode $text;	3061	utf8::encode $text;
853	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	3062	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
854	}	3063	}
855		3064
		3065	=item $client->send_big_packet ($pkt)
		3066
		3067	Like C<send_packet>, but tries to compress large packets, and fragments
		3068	them as required.
		3069
		3070	=cut
		3071
		3072	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3073
		3074	sub cf::client::send_big_packet {
		3075	my ($self, $pkt) = @_;
		3076
		3077	# try lzf for large packets
		3078	$pkt = "lzf " . Compress::LZF::compress $pkt
		3079	if 1024 <= length $pkt and $self->{can_lzf};
		3080
		3081	# split very large packets
		3082	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3083	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3084	$pkt = "frag";
		3085	}
		3086
		3087	$self->send_packet ($pkt);
		3088	}
		3089
		3090	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3091
		3092	Send a drawinfo or msg packet to the client, formatting the msg for the
		3093	client if neccessary. C<$type> should be a string identifying the type of
		3094	the message, with C<log> being the default. If C<$color> is negative, suppress
		3095	the message unless the client supports the msg packet.
		3096
		3097	=cut
		3098
		3099	# non-persistent channels (usually the info channel)
		3100	our %CHANNEL = (
		3101	"c/motd" => {
		3102	id => "infobox",
		3103	title => "MOTD",
		3104	reply => undef,
		3105	tooltip => "The message of the day",
		3106	},
		3107	"c/identify" => {
		3108	id => "infobox",
		3109	title => "Identify",
		3110	reply => undef,
		3111	tooltip => "Items recently identified",
		3112	},
		3113	"c/examine" => {
		3114	id => "infobox",
		3115	title => "Examine",
		3116	reply => undef,
		3117	tooltip => "Signs and other items you examined",
		3118	},
		3119	"c/shopinfo" => {
		3120	id => "infobox",
		3121	title => "Shop Info",
		3122	reply => undef,
		3123	tooltip => "What your bargaining skill tells you about the shop",
		3124	},
		3125	"c/book" => {
		3126	id => "infobox",
		3127	title => "Book",
		3128	reply => undef,
		3129	tooltip => "The contents of a note or book",
		3130	},
		3131	"c/lookat" => {
		3132	id => "infobox",
		3133	title => "Look",
		3134	reply => undef,
		3135	tooltip => "What you saw there",
		3136	},
		3137	"c/who" => {
		3138	id => "infobox",
		3139	title => "Players",
		3140	reply => undef,
		3141	tooltip => "Shows players who are currently online",
		3142	},
		3143	"c/body" => {
		3144	id => "infobox",
		3145	title => "Body Parts",
		3146	reply => undef,
		3147	tooltip => "Shows which body parts you posess and are available",
		3148	},
		3149	"c/statistics" => {
		3150	id => "infobox",
		3151	title => "Statistics",
		3152	reply => undef,
		3153	tooltip => "Shows your primary statistics",
		3154	},
		3155	"c/skills" => {
		3156	id => "infobox",
		3157	title => "Skills",
		3158	reply => undef,
		3159	tooltip => "Shows your experience per skill and item power",
		3160	},
		3161	"c/shopitems" => {
		3162	id => "infobox",
		3163	title => "Shop Items",
		3164	reply => undef,
		3165	tooltip => "Shows the items currently for sale in this shop",
		3166	},
		3167	"c/resistances" => {
		3168	id => "infobox",
		3169	title => "Resistances",
		3170	reply => undef,
		3171	tooltip => "Shows your resistances",
		3172	},
		3173	"c/pets" => {
		3174	id => "infobox",
		3175	title => "Pets",
		3176	reply => undef,
		3177	tooltip => "Shows information abotu your pets/a specific pet",
		3178	},
		3179	"c/perceiveself" => {
		3180	id => "infobox",
		3181	title => "Perceive Self",
		3182	reply => undef,
		3183	tooltip => "You gained detailed knowledge about yourself",
		3184	},
		3185	"c/uptime" => {
		3186	id => "infobox",
		3187	title => "Uptime",
		3188	reply => undef,
		3189	tooltip => "How long the server has been running since last restart",
		3190	},
		3191	"c/mapinfo" => {
		3192	id => "infobox",
		3193	title => "Map Info",
		3194	reply => undef,
		3195	tooltip => "Information related to the maps",
		3196	},
		3197	"c/party" => {
		3198	id => "party",
		3199	title => "Party",
		3200	reply => "gsay ",
		3201	tooltip => "Messages and chat related to your party",
		3202	},
		3203	"c/death" => {
		3204	id => "death",
		3205	title => "Death",
		3206	reply => undef,
		3207	tooltip => "Reason for and more info about your most recent death",
		3208	},
		3209	"c/say" => $SAY_CHANNEL,
		3210	"c/chat" => $CHAT_CHANNEL,
		3211	);
		3212
		3213	sub cf::client::send_msg {
		3214	my ($self, $channel, $msg, $color, @extra) = @_;
		3215
		3216	$msg = $self->pl->expand_cfpod ($msg)
		3217	unless $color & cf::NDI_VERBATIM;
		3218
		3219	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3220
		3221	# check predefined channels, for the benefit of C
		3222	if ($CHANNEL{$channel}) {
		3223	$channel = $CHANNEL{$channel};
		3224
		3225	$self->ext_msg (channel_info => $channel);
		3226	$channel = $channel->{id};
		3227
		3228	} elsif (ref $channel) {
		3229	# send meta info to client, if not yet sent
		3230	unless (exists $self->{channel}{$channel->{id}}) {
		3231	$self->{channel}{$channel->{id}} = $channel;
		3232	$self->ext_msg (channel_info => $channel);
		3233	}
		3234
		3235	$channel = $channel->{id};
		3236	}
		3237
		3238	return unless @extra || length $msg;
		3239
		3240	# default colour, mask it out
		3241	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3242	if $color & cf::NDI_DEF;
		3243
		3244	my $pkt = "msg "
		3245	. $self->{json_coder}->encode (
		3246	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3247	);
		3248
		3249	$self->send_big_packet ($pkt);
		3250	}
		3251
		3252	=item $client->ext_msg ($type, @msg)
		3253
		3254	Sends an ext event to the client.
		3255
		3256	=cut
		3257
		3258	sub cf::client::ext_msg($$@) {
		3259	my ($self, $type, @msg) = @_;
		3260
		3261	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3262	}
856		3263
857	=item $success = $client->query ($flags, "text", \&cb)	3264	=item $success = $client->query ($flags, "text", \&cb)
858		3265
859	Queues a query to the client, calling the given callback with	3266	Queues a query to the client, calling the given callback with
860	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	3267	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
861	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	3268	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
862		3269
863	Queries can fail, so check the return code. Or don't, as queries will become	3270	Queries can fail, so check the return code. Or don't, as queries will
864	reliable at some point in the future.	3271	become reliable at some point in the future.
865		3272
866	=cut	3273	=cut
867		3274
868	sub cf::client::query {	3275	sub cf::client::query {
869	my ($self, $flags, $text, $cb) = @_;	3276	my ($self, $flags, $text, $cb) = @_;
…		…
877	utf8::encode $text;	3284	utf8::encode $text;
878	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	3285	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
879		3286
880	$self->send_packet ($self->{query_queue}[0][0])	3287	$self->send_packet ($self->{query_queue}[0][0])
881	if @{ $self->{query_queue} } == 1;	3288	if @{ $self->{query_queue} } == 1;
		3289
		3290	1
882	}	3291	}
883		3292
884	cf::client->attach (	3293	cf::client->attach (
		3294	on_connect => sub {
		3295	my ($ns) = @_;
		3296
		3297	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3298	},
885	on_reply => sub {	3299	on_reply => sub {
886	my ($ns, $msg) = @_;	3300	my ($ns, $msg) = @_;
887		3301
888	# this weird shuffling is so that direct followup queries	3302	# this weird shuffling is so that direct followup queries
889	# get handled first	3303	# get handled first
890	my $queue = delete $ns->{query_queue};	3304	my $queue = delete $ns->{query_queue}
		3305	or return; # be conservative, not sure how that can happen, but we saw a crash here
891		3306
892	(shift @$queue)->[1]->($msg);	3307	(shift @$queue)->[1]->($msg);
		3308	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
893		3309
894	push @{ $ns->{query_queue} }, @$queue;	3310	push @{ $ns->{query_queue} }, @$queue;
895		3311
896	if (@{ $ns->{query_queue} } == @$queue) {	3312	if (@{ $ns->{query_queue} } == @$queue) {
897	if (@$queue) {	3313	if (@$queue) {
898	$ns->send_packet ($ns->{query_queue}[0][0]);	3314	$ns->send_packet ($ns->{query_queue}[0][0]);
899	} else {	3315	} else {
900	$ns->state (ST_PLAYING);	3316	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
901	}	3317	}
902	}	3318	}
		3319	},
		3320	on_exticmd => sub {
		3321	my ($ns, $buf) = @_;
		3322
		3323	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3324
		3325	if (ref $msg) {
		3326	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3327
		3328	if (my $cb = $EXTIACMD{$type}) {
		3329	$cb->(
		3330	$ns,
		3331	sub {
		3332	$ns->ext_msg ("reply-$reply", @_)
		3333	if $reply;
		3334	},
		3335	@payload
		3336	);
		3337	} else {
		3338	my @reply;
		3339
		3340	if (my $cb = $EXTICMD{$type}) {
		3341	@reply = $cb->($ns, @payload);
		3342	}
		3343
		3344	$ns->ext_msg ("reply-$reply", @reply)
		3345	if $reply;
		3346	}
		3347	} else {
		3348	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3349	}
		3350
		3351	cf::override;
		3352	},
		3353	);
		3354
		3355	=item $client->async (\&cb)
		3356
		3357	Create a new coroutine, running the specified callback. The coroutine will
		3358	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3359	or loss of connection).
		3360
		3361	=cut
		3362
		3363	sub cf::client::async {
		3364	my ($self, $cb) = @_;
		3365
		3366	my $coro = &Coro::async ($cb);
		3367
		3368	$coro->on_destroy (sub {
		3369	delete $self->{_coro}{$coro+0};
		3370	});
		3371
		3372	$self->{_coro}{$coro+0} = $coro;
		3373
		3374	$coro
		3375	}
		3376
		3377	cf::client->attach (
		3378	on_client_destroy => sub {
		3379	my ($ns) = @_;
		3380
		3381	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
903	},	3382	},
904	);	3383	);
905		3384
906	=back	3385	=back
907		3386
…		…
919	our $safe = new Safe "safe";	3398	our $safe = new Safe "safe";
920	our $safe_hole = new Safe::Hole;	3399	our $safe_hole = new Safe::Hole;
921		3400
922	$SIG{FPE} = 'IGNORE';	3401	$SIG{FPE} = 'IGNORE';
923		3402
924	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3403	$safe->permit_only (Opcode::opset qw(
		3404	:base_core :base_mem :base_orig :base_math :base_loop
		3405	grepstart grepwhile mapstart mapwhile
		3406	sort time
		3407	));
925		3408
926	# here we export the classes and methods available to script code	3409	# here we export the classes and methods available to script code
927		3410
928	=pod	3411	=pod
929		3412
930	The following fucntions and emthods are available within a safe environment:	3413	The following functions and methods are available within a safe environment:
931		3414
932	cf::object contr pay_amount pay_player map	3415	cf::object
		3416	contr pay_amount pay_player map x y force_find force_add destroy
		3417	insert remove name archname title slaying race decrease split
		3418	value
		3419
933	cf::object::player player	3420	cf::object::player
934	cf::player peaceful	3421	player
935	cf::map trigger	3422
		3423	cf::player
		3424	peaceful
		3425
		3426	cf::map
		3427	trigger
936		3428
937	=cut	3429	=cut
938		3430
939	for (	3431	for (
940	["cf::object" => qw(contr pay_amount pay_player map)],	3432	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3433	insert remove inv nrof name archname title slaying race
		3434	decrease split destroy change_exp value msg lore send_msg)],
941	["cf::object::player" => qw(player)],	3435	["cf::object::player" => qw(player)],
942	["cf::player" => qw(peaceful)],	3436	["cf::player" => qw(peaceful send_msg)],
943	["cf::map" => qw(trigger)],	3437	["cf::map" => qw(trigger)],
944	) {	3438	) {
945	no strict 'refs';
946	my ($pkg, @funs) = @$_;	3439	my ($pkg, @funs) = @$_;
947	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3440	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
948	for @funs;	3441	for @funs;
949	}	3442	}
950		3443
…		…
965		3458
966	my $qcode = $code;	3459	my $qcode = $code;
967	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3460	$qcode =~ s/"/‟/g; # not allowed in #line filenames
968	$qcode =~ s/\n/\\n/g;	3461	$qcode =~ s/\n/\\n/g;
969		3462
		3463	%vars = (_dummy => 0) unless %vars;
		3464
		3465	my @res;
970	local $_;	3466	local $_;
971	local @safe::cf::_safe_eval_args = values %vars;
972		3467
973	my $eval =	3468	my $eval =
974	"do {\n"	3469	"do {\n"
975	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3470	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
976	. "#line 0 \"{$qcode}\"\n"	3471	. "#line 0 \"{$qcode}\"\n"
977	. $code	3472	. $code
978	. "\n}"	3473	. "\n}"
979	;	3474	;
980		3475
		3476	if ($CFG{safe_eval}) {
981	sub_generation_inc;	3477	sub_generation_inc;
		3478	local @safe::cf::_safe_eval_args = values %vars;
982	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3479	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
983	sub_generation_inc;	3480	sub_generation_inc;
		3481	} else {
		3482	local @cf::_safe_eval_args = values %vars;
		3483	@res = wantarray ? eval eval : scalar eval $eval;
		3484	}
984		3485
985	if ($@) {	3486	if ($@) {
986	warn "$@";	3487	warn "$@",
987	warn "while executing safe code '$code'\n";	3488	"while executing safe code '$code'\n",
988	warn "with arguments " . (join " ", %vars) . "\n";	3489	"with arguments " . (join " ", %vars) . "\n";
989	}	3490	}
990		3491
991	wantarray ? @res : $res[0]	3492	wantarray ? @res : $res[0]
992	}	3493	}
993		3494
…		…
1007	=cut	3508	=cut
1008		3509
1009	sub register_script_function {	3510	sub register_script_function {
1010	my ($fun, $cb) = @_;	3511	my ($fun, $cb) = @_;
1011		3512
1012	no strict 'refs';	3513	$fun = "safe::$fun" if $CFG{safe_eval};
1013	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3514	*$fun = $safe_hole->wrap ($cb);
1014	}	3515	}
1015		3516
1016	=back	3517	=back
1017		3518
1018	=cut	3519	=cut
1019		3520
1020	#############################################################################	3521	#############################################################################
		3522	# the server's init and main functions
1021		3523
1022	=head2 EXTENSION DATABASE SUPPORT	3524	our %FACEHASH; # hash => idx, #d# HACK for http server
1023		3525
1024	Crossfire maintains a very simple database for extension use. It can	3526	# internal api, not fianlised
1025	currently store anything that can be serialised using Storable, which	3527	sub add_face {
1026	excludes objects.	3528	my ($name, $type, $data) = @_;
1027		3529
1028	The parameter C<$family> should best start with the name of the extension	3530	my $idx = cf::face::find $name;
1029	using it, it should be unique.
1030		3531
1031	=over 4	3532	if ($idx) {
		3533	delete $FACEHASH{cf::face::get_chksum $idx};
		3534	} else {
		3535	$idx = cf::face::alloc $name;
		3536	}
1032		3537
1033	=item $hashref = cf::db_get $family	3538	my $hash = cf::face::mangle_chksum Digest::MD5::md5 $data;
1034		3539
1035	Return a hashref for use by the extension C<$family>, which can be	3540	cf::face::set_type $idx, $type;
1036	modified. After modifications, you have to call C<cf::db_dirty> or	3541	cf::face::set_data $idx, 0, $data, $hash;
1037	C<cf::db_sync>.	3542	cf::face::set_meta $idx, $type & 1 ? undef : undef;
		3543	$FACEHASH{$hash} = $idx;#d#
1038		3544
1039	=item $value = cf::db_get $family => $key	3545	$idx
		3546	}
1040		3547
1041	Returns a single value from the database	3548	sub load_facedata($) {
		3549	my ($path) = @_;
1042		3550
1043	=item cf::db_put $family => $hashref	3551	# HACK to clear player env face cache, we need some signal framework
		3552	# for this (global event?)
		3553	%ext::player_env::MUSIC_FACE_CACHE = ();
1044		3554
1045	Stores the given family hashref into the database. Updates are delayed, if	3555	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1046	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1047		3556
1048	=item cf::db_put $family => $key => $value	3557	trace "loading facedata from $path\n";
1049		3558
1050	Stores the given C<$value> in the family hash. Updates are delayed, if you	3559	my $facedata = decode_storable load_file $path;
1051	want the data to be synced to disk immediately, use C<cf::db_sync>.
1052		3560
1053	=item cf::db_dirty	3561	$facedata->{version} == 2
		3562	or cf::cleanup "$path: version mismatch, cannot proceed.";
1054		3563
1055	Marks the database as dirty, to be updated at a later time.	3564	cf::cede_to_tick;
1056		3565
1057	=item cf::db_sync	3566	{
		3567	my $faces = $facedata->{faceinfo};
1058		3568
1059	Immediately write the database to disk I<if it is dirty>.	3569	for my $face (sort keys %$faces) {
		3570	my $info = $faces->{$face};
		3571	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1060		3572
1061	=cut	3573	cf::face::set_visibility $idx, $info->{visibility};
		3574	cf::face::set_magicmap $idx, $info->{magicmap};
		3575	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3576	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3577	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3578	$FACEHASH{$info->{hash64}} = $idx;#d#
1062		3579
1063	our $DB;	3580	cf::cede_to_tick;
		3581	}
		3582
		3583	while (my ($face, $info) = each %$faces) {
		3584	next unless $info->{smooth};
		3585
		3586	my $idx = cf::face::find $face
		3587	or next;
		3588
		3589	if (my $smooth = cf::face::find $info->{smooth}) {
		3590	cf::face::set_smooth $idx, $smooth;
		3591	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3592	} else {
		3593	error "smooth face '$info->{smooth}' not found for face '$face'";
		3594	}
		3595
		3596	cf::cede_to_tick;
		3597	}
		3598	}
		3599
		3600	{
		3601	my $anims = $facedata->{animinfo};
		3602
		3603	while (my ($anim, $info) = each %$anims) {
		3604	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3605	cf::cede_to_tick;
		3606	}
		3607
		3608	cf::anim::invalidate_all; # d'oh
		3609	}
		3610
		3611	{
		3612	my $res = $facedata->{resource};
		3613
		3614	while (my ($name, $info) = each %$res) {
		3615	if (defined (my $type = $info->{type})) {
		3616	# TODO: different hash - must free and use new index, or cache ixface data queue
		3617	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3618
		3619	cf::face::set_type $idx, $type;
		3620	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3621	cf::face::set_meta $idx, $type & 1 ? undef : $info->{meta}; # preserve meta unless prepended already
		3622	$FACEHASH{$info->{hash}} = $idx;#d#
		3623	} else {
		3624	# $RESOURCE{$name} = $info; # unused
		3625	}
		3626
		3627	cf::cede_to_tick;
		3628	}
		3629	}
		3630
		3631	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3632
		3633	1
		3634	}
		3635
		3636	register_exticmd fx_want => sub {
		3637	my ($ns, $want) = @_;
		3638
		3639	while (my ($k, $v) = each %$want) {
		3640	$ns->fx_want ($k, $v);
		3641	}
		3642	};
		3643
		3644	sub load_resource_file($) {
		3645	my $guard = lock_acquire "load_resource_file";
		3646
		3647	my $status = load_resource_file_ $_[0];
		3648	get_slot 0.1, 100;
		3649	cf::arch::commit_load;
		3650
		3651	$status
		3652	}
		3653
		3654	sub reload_exp_table {
		3655	_reload_exp_table;
		3656
		3657	add_face "res/exp_table" => FT_RSRC,
		3658	JSON::XS->new->utf8->canonical->encode (
		3659	[map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]
		3660	);
		3661	}
		3662
		3663	sub reload_materials {
		3664	_reload_materials;
		3665	}
		3666
		3667	sub reload_regions {
		3668	# HACK to clear player env face cache, we need some signal framework
		3669	# for this (global event?)
		3670	%ext::player_env::MUSIC_FACE_CACHE = ();
		3671
		3672	load_resource_file "$MAPDIR/regions"
		3673	or die "unable to load regions file\n";
		3674
		3675	for (cf::region::list) {
		3676	$_->{match} = qr/$_->{match}/
		3677	if exists $_->{match};
		3678	}
		3679	}
		3680
		3681	sub reload_facedata {
		3682	load_facedata "$DATADIR/facedata"
		3683	or die "unable to load facedata\n";
		3684	}
		3685
		3686	sub reload_archetypes {
		3687	load_resource_file "$DATADIR/archetypes"
		3688	or die "unable to load archetypes\n";
		3689
		3690	add_face "res/skill_info" => FT_RSRC,
		3691	JSON::XS->new->utf8->canonical->encode (
		3692	[map [cf::arch::skillvec ($_)->name], 0 .. cf::arch::skillvec_size - 1]
		3693	);
		3694	add_face "res/spell_paths" => FT_RSRC,
		3695	JSON::XS->new->utf8->canonical->encode (
		3696	[map [cf::spellpathnames ($_)], 0 .. NRSPELLPATHS - 1]
		3697	);
		3698	}
		3699
		3700	sub reload_treasures {
		3701	load_resource_file "$DATADIR/treasures"
		3702	or die "unable to load treasurelists\n";
		3703	}
		3704
		3705	sub reload_sound {
		3706	trace "loading sound config from $DATADIR/sound\n";
		3707
		3708	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3709
		3710	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3711	my $sound = $soundconf->{compat}[$_]
		3712	or next;
		3713
		3714	my $face = cf::face::find "sound/$sound->[1]";
		3715	cf::sound::set $sound->[0] => $face;
		3716	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3717	}
		3718
		3719	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3720	my $face = cf::face::find "sound/$v";
		3721	cf::sound::set $k => $face;
		3722	}
		3723	}
		3724
		3725	sub reload_resources {
		3726	trace "reloading resource files...\n";
		3727
		3728	reload_materials;
		3729	reload_facedata;
		3730	reload_exp_table;
		3731	reload_sound;
		3732	reload_archetypes;
		3733	reload_regions;
		3734	reload_treasures;
		3735
		3736	trace "finished reloading resource files\n";
		3737	}
		3738
		3739	sub reload_config {
		3740	trace "reloading config file...\n";
		3741
		3742	my $config = load_file "$CONFDIR/config";
		3743	utf8::decode $config;
		3744	*CFG = decode_yaml $config;
		3745
		3746	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3747
		3748	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3749	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3750
		3751	if (exists $CFG{mlockall}) {
		3752	eval {
		3753	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3754	and die "WARNING: m(un)lockall failed: $!\n";
		3755	};
		3756	warn $@ if $@;
		3757	}
		3758	}
		3759
		3760	sub pidfile() {
		3761	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3762	or die "$PIDFILE: $!";
		3763	flock $fh, &Fcntl::LOCK_EX
		3764	or die "$PIDFILE: flock: $!";
		3765	$fh
		3766	}
		3767
		3768	# make sure only one server instance is running at any one time
		3769	sub atomic {
		3770	my $fh = pidfile;
		3771
		3772	my $pid = <$fh>;
		3773	kill 9, $pid if $pid > 0;
		3774
		3775	seek $fh, 0, 0;
		3776	print $fh $$;
		3777	}
		3778
		3779	sub main_loop {
		3780	trace "EV::loop starting\n";
		3781	if (1) {
		3782	EV::loop;
		3783	}
		3784	trace "EV::loop returned\n";
		3785	goto &main_loop unless $REALLY_UNLOOP;
		3786	}
		3787
		3788	sub main {
		3789	cf::init_globals; # initialise logging
		3790
		3791	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3792	LOG llevInfo, "Copyright (C) 2005-2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3793	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3794	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3795
		3796	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3797
		3798	# we must not ever block the main coroutine
		3799	$Coro::idle = sub {
		3800	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3801	(async {
		3802	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3803	EV::loop EV::LOOP_ONESHOT;
		3804	})->prio (Coro::PRIO_MAX);
		3805	};
		3806
		3807	evthread_start IO::AIO::poll_fileno;
		3808
		3809	cf::sync_job {
		3810	cf::incloader::init ();
		3811
		3812	db_init;
		3813
		3814	cf::init_anim;
		3815	cf::init_attackmess;
		3816	cf::init_dynamic;
		3817
		3818	cf::load_settings;
		3819
		3820	reload_resources;
		3821	reload_config;
		3822
		3823	cf::init_uuid;
		3824	cf::init_signals;
		3825	cf::init_skills;
		3826
		3827	cf::init_beforeplay;
		3828
		3829	atomic;
		3830
		3831	load_extensions;
		3832
		3833	utime time, time, $RUNTIMEFILE;
		3834
		3835	# no (long-running) fork's whatsoever before this point(!)
		3836	use POSIX ();
		3837	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3838
		3839	cf::_post_init 0;
		3840	};
		3841
		3842	cf::object::thawer::errors_are_fatal 0;
		3843	info "parse errors in files are no longer fatal from this point on.\n";
		3844
		3845	AE::postpone {
		3846	undef &main; # free gobs of memory :)
		3847	};
		3848
		3849	goto &main_loop;
		3850	}
		3851
		3852	#############################################################################
		3853	# initialisation and cleanup
		3854
		3855	# install some emergency cleanup handlers
		3856	BEGIN {
		3857	our %SIGWATCHER = ();
		3858	for my $signal (qw(INT HUP TERM)) {
		3859	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3860	cf::cleanup "SIG$signal";
		3861	};
		3862	}
		3863	}
		3864
		3865	sub write_runtime_sync {
		3866	my $t0 = AE::time;
		3867
		3868	# first touch the runtime file to show we are still running:
		3869	# the fsync below can take a very very long time.
		3870
		3871	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3872
		3873	my $guard = cf::lock_acquire "write_runtime";
		3874
		3875	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3876	or return;
		3877
		3878	my $value = $cf::RUNTIME + 90 + 10;
		3879	# 10 is the runtime save interval, for a monotonic clock
		3880	# 60 allows for the watchdog to kill the server.
		3881
		3882	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3883	and return;
		3884
		3885	# always fsync - this file is important
		3886	aio_fsync $fh
		3887	and return;
		3888
		3889	# touch it again to show we are up-to-date
		3890	aio_utime $fh, undef, undef;
		3891
		3892	close $fh
		3893	or return;
		3894
		3895	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3896	and return;
		3897
		3898	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3899
		3900	1
		3901	}
		3902
		3903	our $uuid_lock;
		3904	our $uuid_skip;
		3905
		3906	sub write_uuid_sync($) {
		3907	$uuid_skip ||= $_[0];
		3908
		3909	return if $uuid_lock;
		3910	local $uuid_lock = 1;
		3911
		3912	my $uuid = "$LOCALDIR/uuid";
		3913
		3914	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3915	or return;
		3916
		3917	my $value = uuid_seq uuid_cur;
		3918
		3919	unless ($value) {
		3920	info "cowardly refusing to write zero uuid value!\n";
		3921	return;
		3922	}
		3923
		3924	my $value = uuid_str $value + $uuid_skip;
		3925	$uuid_skip = 0;
		3926
		3927	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3928	and return;
		3929
		3930	# always fsync - this file is important
		3931	aio_fsync $fh
		3932	and return;
		3933
		3934	close $fh
		3935	or return;
		3936
		3937	aio_rename "$uuid~", $uuid
		3938	and return;
		3939
		3940	trace "uuid file written ($value).\n";
		3941
		3942	1
		3943
		3944	}
		3945
		3946	sub write_uuid($$) {
		3947	my ($skip, $sync) = @_;
		3948
		3949	$sync ? write_uuid_sync $skip
		3950	: async { write_uuid_sync $skip };
		3951	}
		3952
		3953	sub emergency_save() {
		3954	my $freeze_guard = cf::freeze_mainloop;
		3955
		3956	info "emergency_perl_save: enter\n";
		3957
		3958	# this is a trade-off: we want to be very quick here, so
		3959	# save all maps without fsync, and later call a global sync
		3960	# (which in turn might be very very slow)
		3961	local $USE_FSYNC = 0;
		3962
		3963	cf::sync_job {
		3964	cf::write_runtime_sync; # external watchdog should not bark
		3965
		3966	# use a peculiar iteration method to avoid tripping on perl
		3967	# refcount bugs in for. also avoids problems with players
		3968	# and maps saved/destroyed asynchronously.
		3969	info "emergency_perl_save: begin player save\n";
		3970	for my $login (keys %cf::PLAYER) {
		3971	my $pl = $cf::PLAYER{$login} or next;
		3972	$pl->valid or next;
		3973	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3974	$pl->save;
		3975	}
		3976	info "emergency_perl_save: end player save\n";
		3977
		3978	cf::write_runtime_sync; # external watchdog should not bark
		3979
		3980	info "emergency_perl_save: begin map save\n";
		3981	for my $path (keys %cf::MAP) {
		3982	my $map = $cf::MAP{$path} or next;
		3983	$map->valid or next;
		3984	$map->save;
		3985	}
		3986	info "emergency_perl_save: end map save\n";
		3987
		3988	cf::write_runtime_sync; # external watchdog should not bark
		3989
		3990	info "emergency_perl_save: begin database checkpoint\n";
		3991	BDB::db_env_txn_checkpoint $DB_ENV;
		3992	info "emergency_perl_save: end database checkpoint\n";
		3993
		3994	info "emergency_perl_save: begin write uuid\n";
		3995	write_uuid_sync 1;
		3996	info "emergency_perl_save: end write uuid\n";
		3997
		3998	cf::write_runtime_sync; # external watchdog should not bark
		3999
		4000	trace "emergency_perl_save: syncing database to disk";
		4001	BDB::db_env_txn_checkpoint $DB_ENV;
		4002
		4003	info "emergency_perl_save: starting sync\n";
		4004	IO::AIO::aio_sync sub {
		4005	info "emergency_perl_save: finished sync\n";
		4006	};
		4007
		4008	cf::write_runtime_sync; # external watchdog should not bark
		4009
		4010	trace "emergency_perl_save: flushing outstanding aio requests";
		4011	while (IO::AIO::nreqs || BDB::nreqs) {
		4012	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		4013	}
		4014
		4015	cf::write_runtime_sync; # external watchdog should not bark
		4016	};
		4017
		4018	info "emergency_perl_save: leave\n";
		4019	}
		4020
		4021	sub post_cleanup {
		4022	my ($make_core) = @_;
		4023
		4024	IO::AIO::flush;
		4025
		4026	error Carp::longmess "post_cleanup backtrace"
		4027	if $make_core;
		4028
		4029	my $fh = pidfile;
		4030	unlink $PIDFILE if <$fh> == $$;
		4031	}
		4032
		4033	# a safer delete_package, copied from Symbol
		4034	sub clear_package($) {
		4035	my $pkg = shift;
		4036
		4037	# expand to full symbol table name if needed
		4038	unless ($pkg =~ /^main::.*::$/) {
		4039	$pkg = "main$pkg" if $pkg =~ /^::/;
		4040	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		4041	$pkg .= '::' unless $pkg =~ /::$/;
		4042	}
		4043
		4044	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		4045	my $stem_symtab = *{$stem}{HASH};
		4046
		4047	defined $stem_symtab and exists $stem_symtab->{$leaf}
		4048	or return;
		4049
		4050	# clear all symbols
		4051	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		4052	for my $name (keys %$leaf_symtab) {
		4053	_gv_clear *{"$pkg$name"};
		4054	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		4055	}
		4056	}
		4057
		4058	sub do_reload_perl() {
		4059	# can/must only be called in main
		4060	unless (in_main) {
		4061	error "can only reload from main coroutine";
		4062	return;
		4063	}
		4064
		4065	return if $RELOAD++;
		4066
		4067	my $t1 = AE::time;
		4068
		4069	while ($RELOAD) {
		4070	cf::get_slot 0.1, -1, "reload_perl";
		4071	info "perl_reload: reloading...";
		4072
		4073	trace "perl_reload: entering sync_job";
		4074
		4075	cf::sync_job {
		4076	#cf::emergency_save;
		4077
		4078	trace "perl_reload: cancelling all extension coros";
		4079	$_->cancel for values %EXT_CORO;
		4080	%EXT_CORO = ();
		4081
		4082	trace "perl_reload: removing commands";
		4083	%COMMAND = ();
		4084
		4085	trace "perl_reload: removing ext/exti commands";
		4086	%EXTCMD = ();
		4087	%EXTICMD = ();
		4088
		4089	trace "perl_reload: unloading/nuking all extensions";
		4090	for my $pkg (@EXTS) {
		4091	trace "... unloading $pkg";
		4092
		4093	if (my $cb = $pkg->can ("unload")) {
		4094	eval {
		4095	$cb->($pkg);
		4096	1
		4097	} or error "$pkg unloaded, but with errors: $@";
		4098	}
		4099
		4100	trace "... clearing $pkg";
		4101	clear_package $pkg;
		4102	}
		4103
		4104	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4105	while (my ($k, $v) = each %INC) {
		4106	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4107
		4108	trace "... unloading $k";
		4109	delete $INC{$k};
		4110
		4111	$k =~ s/\.pm$//;
		4112	$k =~ s/\//::/g;
		4113
		4114	if (my $cb = $k->can ("unload_module")) {
		4115	$cb->();
		4116	}
		4117
		4118	clear_package $k;
		4119	}
		4120
		4121	trace "perl_reload: getting rid of safe::, as good as possible";
		4122	clear_package "safe::$_"
		4123	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4124
		4125	trace "perl_reload: unloading cf.pm \"a bit\"";
		4126	delete $INC{"cf.pm"};
		4127	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4128
		4129	# don't, removes xs symbols, too,
		4130	# and global variables created in xs
		4131	#clear_package __PACKAGE__;
		4132
		4133	info "perl_reload: unload completed, starting to reload now";
		4134
		4135	trace "perl_reload: reloading cf.pm";
		4136	require cf;
		4137	cf::_connect_to_perl_1;
		4138
		4139	trace "perl_reload: loading config and database again";
		4140	cf::reload_config;
		4141
		4142	trace "perl_reload: loading extensions";
		4143	cf::load_extensions;
		4144
		4145	if ($REATTACH_ON_RELOAD) {
		4146	trace "perl_reload: reattaching attachments to objects/players";
		4147	_global_reattach; # objects, sockets
		4148	trace "perl_reload: reattaching attachments to maps";
		4149	reattach $_ for values %MAP;
		4150	trace "perl_reload: reattaching attachments to players";
		4151	reattach $_ for values %PLAYER;
		4152	}
		4153
		4154	cf::_post_init 1;
		4155
		4156	trace "perl_reload: leaving sync_job";
		4157
		4158	1
		4159	} or do {
		4160	error $@;
		4161	cf::cleanup "perl_reload: error, exiting.";
		4162	};
		4163
		4164	--$RELOAD;
		4165	}
		4166
		4167	$t1 = AE::time - $t1;
		4168	info "perl_reload: completed in ${t1}s\n";
		4169	};
		4170
		4171	our $RELOAD_WATCHER; # used only during reload
		4172
		4173	sub reload_perl() {
		4174	# doing reload synchronously and two reloads happen back-to-back,
		4175	# coro crashes during coro_state_free->destroy here.
		4176
		4177	$RELOAD_WATCHER ||= cf::async {
		4178	Coro::AIO::aio_wait cache_extensions;
		4179
		4180	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4181	do_reload_perl;
		4182	undef $RELOAD_WATCHER;
		4183	};
		4184	};
		4185	}
		4186
		4187	register_command "reload" => sub {
		4188	my ($who, $arg) = @_;
		4189
		4190	if ($who->flag (FLAG_WIZ)) {
		4191	$who->message ("reloading server.");
		4192	async {
		4193	$Coro::current->{desc} = "perl_reload";
		4194	reload_perl;
		4195	};
		4196	}
		4197	};
		4198
		4199	#############################################################################
		4200
		4201	my $bug_warning = 0;
		4202
		4203	sub wait_for_tick() {
		4204	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4205
		4206	$WAIT_FOR_TICK->wait;
		4207	}
		4208
		4209	sub wait_for_tick_begin() {
		4210	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4211
		4212	my $signal = new Coro::Signal;
		4213	push @WAIT_FOR_TICK_BEGIN, $signal;
		4214	$signal->wait;
		4215	}
		4216
		4217	sub tick {
		4218	if ($Coro::current != $Coro::main) {
		4219	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4220	unless ++$bug_warning > 10;
		4221	return;
		4222	}
		4223
		4224	cf::one_tick; # one server iteration
		4225
		4226	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4227
		4228	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4229	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4230	Coro::async_pool {
		4231	$Coro::current->{desc} = "runtime saver";
		4232	write_runtime_sync
		4233	or error "ERROR: unable to write runtime file: $!";
		4234	};
		4235	}
		4236
		4237	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4238	$sig->send;
		4239	}
		4240	$WAIT_FOR_TICK->broadcast;
		4241
		4242	$LOAD = ($NOW - $TICK_START) / $TICK;
		4243	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4244
		4245	if (0) {
		4246	if ($NEXT_TICK) {
		4247	my $jitter = $TICK_START - $NEXT_TICK;
		4248	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4249	debug "jitter $JITTER\n";#d#
		4250	}
		4251	}
		4252	}
1064		4253
1065	{	4254	{
1066	my $path = cf::localdir . "/database.pst";	4255	# configure BDB
		4256	info "initialising database";
1067		4257
1068	sub db_load() {	4258	BDB::min_parallel 16;
1069	warn "loading database $path\n";#d# remove later	4259	BDB::max_poll_reqs $TICK * 0.1;
1070	$DB = stat $path ? Storable::retrieve $path : { };	4260	#$AnyEvent::BDB::WATCHER->priority (1);
1071	}
1072		4261
1073	my $pid;	4262	unless ($DB_ENV) {
		4263	$DB_ENV = BDB::db_env_create;
		4264	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4265	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4266	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4267	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4268	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1074		4269
1075	sub db_save() {	4270	cf::sync_job {
1076	warn "saving database $path\n";#d# remove later
1077	waitpid $pid, 0 if $pid;
1078	if (0 == ($pid = fork)) {
1079	$DB->{_meta}{version} = 1;
1080	Storable::nstore $DB, "$path~";
1081	rename "$path~", $path;
1082	cf::_exit 0 if defined $pid;
1083	}
1084	}
1085
1086	my $dirty;
1087
1088	sub db_sync() {
1089	db_save if $dirty;
1090	undef $dirty;
1091	}
1092
1093	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1094	db_sync;
1095	});
1096
1097	sub db_dirty() {
1098	$dirty = 1;
1099	$idle->start;
1100	}
1101
1102	sub db_get($;$) {
1103	@_ >= 2
1104	? $DB->{$_[0]}{$_[1]}
1105	: ($DB->{$_[0]} ||= { })
1106	}
1107
1108	sub db_put($$;$) {
1109	if (@_ >= 3) {
1110	$DB->{$_[0]}{$_[1]} = $_[2];
1111	} else {	4271	eval {
1112	$DB->{$_[0]} = $_[1];	4272	BDB::db_env_open
1113	}	4273	$DB_ENV,
1114	db_dirty;	4274	$BDBDIR,
1115	}	4275	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4276	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4277	0666;
1116		4278
1117	cf::global->attach (	4279	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1118	prio => 10000,
1119	on_cleanup => sub {
1120	db_sync;
1121	},
1122	);
1123	}
1124
1125	#############################################################################
1126	# the server's main()
1127
1128	sub cfg_load {
1129	open my $fh, "<:utf8", cf::confdir . "/config"
1130	or return;
1131
1132	local $/;
1133	*CFG = YAML::Syck::Load <$fh>;
1134	}
1135
1136	sub main {
1137	cfg_load;
1138	db_load;
1139	load_extensions;
1140	Event::loop;
1141	}
1142
1143	#############################################################################
1144	# initialisation
1145
1146	sub _perl_reload(&) {
1147	my ($msg) = @_;
1148
1149	$msg->("reloading...");
1150
1151	eval {
1152	# cancel all watchers
1153	for (Event::all_watchers) {
1154	$_->cancel if $_->data & WF_AUTOCANCEL;
1155	}
1156
1157	# unload all extensions
1158	for (@exts) {
1159	$msg->("unloading <$_>");
1160	unload_extension $_;
1161	}
1162
1163	# unload all modules loaded from $LIBDIR
1164	while (my ($k, $v) = each %INC) {
1165	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1166
1167	$msg->("removing <$k>");
1168	delete $INC{$k};
1169
1170	$k =~ s/\.pm$//;
1171	$k =~ s/\//::/g;
1172
1173	if (my $cb = $k->can ("unload_module")) {
1174	$cb->();
1175	}	4280	};
1176		4281
1177	Symbol::delete_package $k;	4282	cf::cleanup "db_env_open(db): $@" if $@;
1178	}	4283	};
		4284	}
1179		4285
1180	# sync database to disk	4286	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1181	cf::db_sync;	4287	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1182
1183	# get rid of safe::, as good as possible
1184	Symbol::delete_package "safe::$_"
1185	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1186
1187	# remove register_script_function callbacks
1188	# TODO
1189
1190	# unload cf.pm "a bit"
1191	delete $INC{"cf.pm"};
1192
1193	# don't, removes xs symbols, too,
1194	# and global variables created in xs
1195	#Symbol::delete_package __PACKAGE__;
1196
1197	# reload cf.pm
1198	$msg->("reloading cf.pm");
1199	require cf;
1200
1201	# load config and database again
1202	cf::cfg_load;
1203	cf::db_load;
1204
1205	# load extensions
1206	$msg->("load extensions");
1207	cf::load_extensions;
1208
1209	# reattach attachments to objects
1210	$msg->("reattach");
1211	_global_reattach;
1212	};	4288	};
1213	$msg->($@) if $@;	4289	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1214		4290	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1215	$msg->("reloaded");
1216	};
1217
1218	sub perl_reload() {
1219	_perl_reload {
1220	warn $_[0];
1221	print "$_[0]\n";
1222	};	4291	};
1223	}	4292	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4293	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4294	};
1224		4295
1225	register "<global>", __PACKAGE__;	4296	info "database initialised";
		4297	}
1226		4298
1227	register_command "perl-reload" => sub {	4299	{
		4300	# configure IO::AIO
		4301
		4302	info "initialising aio";
		4303	IO::AIO::min_parallel 8;
		4304	IO::AIO::max_poll_time $TICK * 0.1;
		4305	undef $AnyEvent::AIO::WATCHER;
		4306	info "aio initialised";
		4307	}
		4308
		4309	our $_log_backtrace;
		4310	our $_log_backtrace_last;
		4311
		4312	sub _log_backtrace {
1228	my ($who, $arg) = @_;	4313	my ($msg, @addr) = @_;
1229		4314
1230	if ($who->flag (FLAG_WIZ)) {	4315	$msg =~ s/\n$//;
1231	_perl_reload {	4316
1232	warn $_[0];	4317	if ($_log_backtrace_last eq $msg) {
1233	$who->message ($_[0]);	4318	LOG llevInfo, "[ABT] $msg\n";
		4319	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4320	# limit the # of concurrent backtraces
		4321	} elsif ($_log_backtrace < 2) {
		4322	$_log_backtrace_last = $msg;
		4323	++$_log_backtrace;
		4324	my $perl_bt = Carp::longmess $msg;
		4325	async {
		4326	$Coro::current->{desc} = "abt $msg";
		4327
		4328	my @bt = fork_call {
		4329	@addr = map { sprintf "%x", $_ } @addr;
		4330	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4331	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4332	or die "addr2line: $!";
		4333
		4334	my @funcs;
		4335	my @res = <$fh>;
		4336	chomp for @res;
		4337	while (@res) {
		4338	my ($func, $line) = splice @res, 0, 2, ();
		4339	push @funcs, "[$func] $line";
		4340	}
		4341
		4342	@funcs
		4343	};
		4344
		4345	LOG llevInfo, "[ABT] $perl_bt\n";
		4346	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4347	LOG llevInfo, "[ABT] $_\n" for @bt;
		4348	--$_log_backtrace;
1234	};	4349	};
1235	}	4350	} else {
1236	};	4351	LOG llevInfo, "[ABT] $msg\n";
1237		4352	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1238	unshift @INC, $LIBDIR;
1239
1240	$TICK_WATCHER = Event->timer (
1241	prio => 0,
1242	at => $NEXT_TICK || 1,
1243	data => WF_AUTOCANCEL,
1244	cb => sub {
1245	cf::server_tick; # one server iteration
1246
1247	my $NOW = Event::time;
1248	$NEXT_TICK += $TICK;
1249
1250	# if we are delayed by four ticks or more, skip them all
1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1252
1253	$TICK_WATCHER->at ($NEXT_TICK);
1254	$TICK_WATCHER->start;
1255	},	4353	}
1256	);	4354	}
1257		4355
1258	IO::AIO::max_poll_time $TICK * 0.2;	4356	# load additional modules
		4357	require "cf/$_.pm" for @EXTRA_MODULES;
		4358	cf::_connect_to_perl_2;
1259		4359
1260	Event->io (fd => IO::AIO::poll_fileno,	4360	END { cf::emergency_save }
1261	poll => 'r',
1262	prio => 5,
1263	data => WF_AUTOCANCEL,
1264	cb => \&IO::AIO::poll_cb);
1265		4361
1266	1	4362	1
1267		4363

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