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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.101 by root, Mon Dec 25 14:43:23 2006 UTC vs.
Revision 1.562 by root, Sat Apr 23 04:46:26 2011 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010 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;
2		24
3	use utf8;	25	use common::sense;
4	use strict;
5		26
6	use Symbol;	27	use Symbol;
7	use List::Util;	28	use List::Util;
8	use Storable;	29	use Socket;
		30	use EV;
9	use Opcode;	31	use Opcode;
10	use Safe;	32	use Safe;
11	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
12		36
		37	use Guard ();
13	use Coro;	38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
14	use Coro::Event;	42	use Coro::AnyEvent;
15	use Coro::Timer;	43	use Coro::Timer;
16	use Coro::Signal;	44	use Coro::Signal;
17	use Coro::Semaphore;	45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
18		52
19	use IO::AIO 2.3;	53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Fcntl;
20	use YAML::Syck ();	57	use YAML::XS ();
		58	use IO::AIO ();
21	use Time::HiRes;	59	use Time::HiRes;
		60	use Compress::LZF;
		61	use Digest::MD5 ();
22		62
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	63	AnyEvent::detect;
24		64
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	65	# configure various modules to our taste
26	$YAML::Syck::ImplicitUnicode = 1;	66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
27		69
28	$Coro::main->prio (Coro::PRIO_MIN);	70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
29		78
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
31		82
32	our %COMMAND = ();	83	our %COMMAND = ();
33	our %COMMAND_TIME = ();	84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
35		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
36	our @EVENT;	93	our @EVENT;
37	our $LIBDIR = datadir . "/ext";	94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
38		96
39	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
40	our $TICK_WATCHER;	98
		99	our $DATADIR = datadir;
		100	our $LIBDIR = "$DATADIR/ext";
		101	our $PODDIR = "$DATADIR/pod";
		102	our $MAPDIR = "$DATADIR/" . mapdir;
		103
		104	our $LOCALDIR = localdir;
		105	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		106	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		107	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		108	our $RANDOMDIR = "$LOCALDIR/random";
		109	our $BDBDIR = "$LOCALDIR/db";
		110	our $PIDFILE = "$LOCALDIR/pid";
		111	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		112
		113	our %RESOURCE; # unused
		114
		115	our $OUTPUT_RATE_MIN = 3000;
		116	our $OUTPUT_RATE_MAX = 1000000;
		117
		118	our $MAX_LINKS = 32; # how many chained exits to follow
		119	our $VERBOSE_IO = 1;
		120
		121	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		122	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	123	our $NEXT_TICK;
		124	our $USE_FSYNC = 1; # use fsync to write maps - default on
		125
		126	our $BDB_DEADLOCK_WATCHER;
		127	our $BDB_CHECKPOINT_WATCHER;
		128	our $BDB_TRICKLE_WATCHER;
		129	our $DB_ENV;
		130
		131	our @EXTRA_MODULES = qw(pod match mapscript incloader);
42		132
43	our %CFG;	133	our %CFG;
44		134
45	our $UPTIME; $UPTIME ||= time;	135	our $UPTIME; $UPTIME ||= time;
		136	our $RUNTIME;
		137	our $NOW;
		138
		139	our (%PLAYER, %PLAYER_LOADING); # all users
		140	our (%MAP, %MAP_LOADING ); # all maps
		141	our $LINK_MAP; # the special {link} map, which is always available
		142
		143	# used to convert map paths into valid unix filenames by replacing / by ∕
		144	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		145
		146	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		147	our $LOADAVG; # same thing, but with alpha-smoothing
		148	our $JITTER; # average jitter
		149	our $TICK_START; # for load detecting purposes
		150
		151	our @POST_INIT;
		152
		153	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		154	our $REALLY_UNLOOP; # never set to true, please :)
		155
		156	binmode STDOUT;
		157	binmode STDERR;
		158
		159	# read virtual server time, if available
		160	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		161	open my $fh, "<", $RUNTIMEFILE
		162	or die "unable to read $RUNTIMEFILE file: $!";
		163	$RUNTIME = <$fh> + 0.;
		164	}
		165
		166	eval "sub TICK() { $TICK } 1" or die;
		167
		168	mkdir $_
		169	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		170
		171	our $EMERGENCY_POSITION;
		172
		173	sub cf::map::normalise;
		174
		175	sub in_main() {
		176	$Coro::current == $Coro::main
		177	}
46		178
47	#############################################################################	179	#############################################################################
48		180
		181	%REFLECT = ();
		182	for (@REFLECT) {
		183	my $reflect = JSON::XS::decode_json $_;
		184	$REFLECT{$reflect->{class}} = $reflect;
		185	}
		186
		187	# this is decidedly evil
		188	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		189
		190	#############################################################################
		191
49	=head2 GLOBAL VARIABLES	192	=head2 GLOBAL VARIABLES
50		193
51	=over 4	194	=over 4
52		195
53	=item $cf::UPTIME	196	=item $cf::UPTIME
54		197
55	The timestamp of the server start (so not actually an uptime).	198	The timestamp of the server start (so not actually an uptime).
56		199
57	=item $cf::LIBDIR	200	=item $cf::RUNTIME
58		201
59	The perl library directory, where extensions and cf-specific modules can	202	The time this server has run, starts at 0 and is increased by $cf::TICK on
60	be found. It will be added to C<@INC> automatically.	203	every server tick.
		204
		205	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		206	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		207	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		208
		209	Various directories - "/etc", read-only install directory, perl-library
		210	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		211	unique-items directory, player file directory, random maps directory and
		212	database environment.
		213
		214	=item $cf::NOW
		215
		216	The time of the last (current) server tick.
61		217
62	=item $cf::TICK	218	=item $cf::TICK
63		219
64	The interval between server ticks, in seconds.	220	The interval between server ticks, in seconds.
65		221
		222	=item $cf::LOADAVG
		223
		224	The current CPU load on the server (alpha-smoothed), as a value between 0
		225	(none) and 1 (overloaded), indicating how much time is spent on processing
		226	objects per tick. Healthy values are < 0.5.
		227
		228	=item $cf::LOAD
		229
		230	The raw value load value from the last tick.
		231
66	=item %cf::CFG	232	=item %cf::CFG
67		233
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	234	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
69	from wherever your confdir points to.	235	from wherever your confdir points to.
70		236
		237	=item cf::wait_for_tick, cf::wait_for_tick_begin
		238
		239	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		240	returns directly I<after> the tick processing (and consequently, can only wake one thread
		241	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		242
		243	=cut
		244
		245	sub wait_for_tick();
		246	sub wait_for_tick_begin();
		247
		248	=item @cf::INVOKE_RESULTS
		249
		250	This array contains the results of the last C<invoke ()> call. When
		251	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		252	that call.
		253
		254	=item %cf::REFLECT
		255
		256	Contains, for each (C++) class name, a hash reference with information
		257	about object members (methods, scalars, arrays and flags) and other
		258	metadata, which is useful for introspection.
		259
71	=back	260	=back
72		261
73	=cut	262	=cut
74		263
75	BEGIN {	264	sub error(@) { LOG llevError, join "", @_ }
76	*CORE::GLOBAL::warn = sub {	265	sub warn (@) { LOG llevWarn , join "", @_ }
		266	sub info (@) { LOG llevInfo , join "", @_ }
		267	sub debug(@) { LOG llevDebug, join "", @_ }
		268	sub trace(@) { LOG llevTrace, join "", @_ }
		269
		270	$Coro::State::WARNHOOK = sub {
77	my $msg = join "", @_;	271	my $msg = join "", @_;
		272
78	$msg .= "\n"	273	$msg .= "\n"
79	unless $msg =~ /\n$/;	274	unless $msg =~ /\n$/;
80		275
81	print STDERR "cfperl: $msg";	276	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
82	LOG llevError, "cfperl: $msg";	277
83	};	278	LOG llevWarn, $msg;
84	}	279	};
		280
		281	$Coro::State::DIEHOOK = sub {
		282	return unless $^S eq 0; # "eq", not "=="
		283
		284	error Carp::longmess $_[0];
		285
		286	if (in_main) {#d#
		287	error "DIEHOOK called in main context, Coro bug?\n";#d#
		288	return;#d#
		289	}#d#
		290
		291	# kill coroutine otherwise
		292	Coro::terminate
		293	};
85		294
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	295	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	296	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
88	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	297	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
89	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	298	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
90	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	299	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		300	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
91	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	301	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
92		302
93	# we bless all objects into (empty) derived classes to force a method lookup	303	# we bless all objects into (empty) derived classes to force a method lookup
94	# within the Safe compartment.	304	# within the Safe compartment.
95	for my $pkg (qw(	305	for my $pkg (qw(
96	cf::global cf::attachable	306	cf::global cf::attachable
97	cf::object cf::object::player	307	cf::object cf::object::player
98	cf::client cf::player	308	cf::client cf::player
99	cf::arch cf::living	309	cf::arch cf::living
		310	cf::map cf::mapspace
100	cf::map cf::party cf::region	311	cf::party cf::region
101	)) {	312	)) {
102	no strict 'refs';
103	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	313	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
104	}	314	}
105		315
106	$Event::DIED = sub {	316	$EV::DIED = sub {
107	warn "error in event callback: @_";	317	Carp::cluck "error in event callback: @_";
108	};	318	};
109		319
110	my %ext_pkg;	320	#############################################################################
111	my @exts;	321
112	my @hook;	322	sub fork_call(&@);
		323	sub get_slot($;$$);
		324
		325	#############################################################################
113		326
114	=head2 UTILITY FUNCTIONS	327	=head2 UTILITY FUNCTIONS
115		328
116	=over 4	329	=over 4
117		330
118	=cut	331	=item dumpval $ref
119		332
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	333	=cut
121		334
		335	sub dumpval {
		336	eval {
		337	local $SIG{__DIE__};
		338	my $d;
		339	if (1) {
		340	$d = new Data::Dumper([$_[0]], ["*var"]);
		341	$d->Terse(1);
		342	$d->Indent(2);
		343	$d->Quotekeys(0);
		344	$d->Useqq(1);
		345	#$d->Bless(...);
		346	$d->Seen($_[1]) if @_ > 1;
		347	$d = $d->Dump();
		348	}
		349	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		350	$d
		351	} || "[unable to dump $_[0]: '$@']";
		352	}
		353
		354	=item $scalar = load_file $path
		355
		356	Loads the given file from path and returns its contents. Croaks on error
		357	and can block.
		358
		359	=cut
		360
		361	sub load_file($) {
		362	0 <= aio_load $_[0], my $data
		363	or Carp::croak "$_[0]: $!";
		364
		365	$data
		366	}
		367
122	=item $ref = cf::from_json $json	368	=item $ref = cf::decode_json $json
123		369
124	Converts a JSON string into the corresponding perl data structure.	370	Converts a JSON string into the corresponding perl data structure.
125		371
126	=cut
127
128	sub from_json($) {
129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
130	JSON::Syck::Load $_[0]
131	}
132
133	=item $json = cf::to_json $ref	372	=item $json = cf::encode_json $ref
134		373
135	Converts a perl data structure into its JSON representation.	374	Converts a perl data structure into its JSON representation.
136		375
137	=cut	376	=cut
138		377
139	sub to_json($) {	378	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	379
141	JSON::Syck::Dump $_[0]	380	sub encode_json($) { $json_coder->encode ($_[0]) }
		381	sub decode_json($) { $json_coder->decode ($_[0]) }
		382
		383	=item $ref = cf::decode_storable $scalar
		384
		385	Same as Coro::Storable::thaw, so blocks.
		386
		387	=cut
		388
		389	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		390
		391	=item $ref = cf::decode_yaml $scalar
		392
		393	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		394
		395	=cut
		396
		397	sub decode_yaml($) {
		398	fork_call { YAML::XS::Load $_[0] } @_
		399	}
		400
		401	=item $scalar = cf::unlzf $scalar
		402
		403	Same as Compress::LZF::compress, but takes server ticks into account, so
		404	blocks.
		405
		406	=cut
		407
		408	sub unlzf($) {
		409	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		410	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		411	Compress::LZF::decompress $_[0]
		412	}
		413
		414	=item cf::post_init { BLOCK }
		415
		416	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		417	but I<before> the server starts ticking again.
		418
		419	The codeblock will have a single boolean argument to indicate whether this
		420	is a reload or not.
		421
		422	=cut
		423
		424	sub post_init(&) {
		425	push @POST_INIT, shift;
		426	}
		427
		428	sub _post_init {
		429	trace "running post_init jobs";
		430
		431	# run them in parallel...
		432
		433	my @join;
		434
		435	while () {
		436	push @join, map &Coro::async ($_, 0), @POST_INIT;
		437	@POST_INIT = ();
		438
		439	@join or last;
		440
		441	(pop @join)->join;
		442	}
		443	}
		444
		445	=item cf::lock_wait $string
		446
		447	Wait until the given lock is available. See cf::lock_acquire.
		448
		449	=item my $lock = cf::lock_acquire $string
		450
		451	Wait until the given lock is available and then acquires it and returns
		452	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		453	for example when the coroutine gets canceled), the lock is automatically
		454	returned.
		455
		456	Locks are *not* recursive, locking from the same coro twice results in a
		457	deadlocked coro.
		458
		459	Lock names should begin with a unique identifier (for example, cf::map::find
		460	uses map_find and cf::map::load uses map_load).
		461
		462	=item $locked = cf::lock_active $string
		463
		464	Return true if the lock is currently active, i.e. somebody has locked it.
		465
		466	=cut
		467
		468	our $LOCKS = new Coro::SemaphoreSet;
		469
		470	sub lock_wait($) {
		471	$LOCKS->wait ($_[0]);
		472	}
		473
		474	sub lock_acquire($) {
		475	$LOCKS->guard ($_[0])
		476	}
		477
		478	sub lock_active($) {
		479	$LOCKS->count ($_[0]) < 1
		480	}
		481
		482	sub freeze_mainloop {
		483	tick_inhibit_inc;
		484
		485	&Guard::guard (\&tick_inhibit_dec);
		486	}
		487
		488	=item cf::periodic $interval, $cb
		489
		490	Like EV::periodic, but randomly selects a starting point so that the actions
		491	get spread over time.
		492
		493	=cut
		494
		495	sub periodic($$) {
		496	my ($interval, $cb) = @_;
		497
		498	my $start = rand List::Util::min 180, $interval;
		499
		500	EV::periodic $start, $interval, 0, $cb
		501	}
		502
		503	=item cf::get_slot $time[, $priority[, $name]]
		504
		505	Allocate $time seconds of blocking CPU time at priority C<$priority>
		506	(default: 0): This call blocks and returns only when you have at least
		507	C<$time> seconds of cpu time till the next tick. The slot is only valid
		508	till the next cede.
		509
		510	Background jobs should use a priority les than zero, interactive jobs
		511	should use 100 or more.
		512
		513	The optional C<$name> can be used to identify the job to run. It might be
		514	used for statistical purposes and should identify the same time-class.
		515
		516	Useful for short background jobs.
		517
		518	=cut
		519
		520	our @SLOT_QUEUE;
		521	our $SLOT_QUEUE;
		522	our $SLOT_DECAY = 0.9;
		523
		524	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		525	$SLOT_QUEUE = Coro::async {
		526	$Coro::current->desc ("timeslot manager");
		527
		528	my $signal = new Coro::Signal;
		529	my $busy;
		530
		531	while () {
		532	next_job:
		533
		534	my $avail = cf::till_tick;
		535
		536	for (0 .. $#SLOT_QUEUE) {
		537	if ($SLOT_QUEUE[$_][0] <= $avail) {
		538	$busy = 0;
		539	my $job = splice @SLOT_QUEUE, $_, 1, ();
		540	$job->[2]->send;
		541	Coro::cede;
		542	goto next_job;
		543	} else {
		544	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		545	}
		546	}
		547
		548	if (@SLOT_QUEUE) {
		549	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		550	push @cf::WAIT_FOR_TICK, $signal;
		551	$signal->wait;
		552	} else {
		553	$busy = 0;
		554	Coro::schedule;
		555	}
		556	}
		557	};
		558
		559	sub get_slot($;$$) {
		560	return if tick_inhibit || $Coro::current == $Coro::main;
		561
		562	my ($time, $pri, $name) = @_;
		563
		564	$time = clamp $time, 0.01, $TICK * .6;
		565
		566	my $sig = new Coro::Signal;
		567
		568	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		569	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		570	$SLOT_QUEUE->ready;
		571	$sig->wait;
		572	}
		573
		574	=item cf::async { BLOCK }
		575
		576	Currently the same as Coro::async_pool, meaning you cannot use
		577	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		578	thing you are allowed to do is call C<prio> on it.
		579
		580	=cut
		581
		582	BEGIN { *async = \&Coro::async_pool }
		583
		584	=item cf::sync_job { BLOCK }
		585
		586	The design of Deliantra requires that the main coroutine ($Coro::main)
		587	is always able to handle events or runnable, as Deliantra is only
		588	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		589	acceptable.
		590
		591	If it must be done, put the blocking parts into C<sync_job>. This will run
		592	the given BLOCK in another coroutine while waiting for the result. The
		593	server will be frozen during this time, so the block should either finish
		594	fast or be very important.
		595
		596	=cut
		597
		598	sub sync_job(&) {
		599	my ($job) = @_;
		600
		601	if (in_main) {
		602	my $time = AE::time;
		603
		604	# this is the main coro, too bad, we have to block
		605	# till the operation succeeds, freezing the server :/
		606
		607	#LOG llevError, Carp::longmess "sync job";#d#
		608
		609	my $freeze_guard = freeze_mainloop;
		610
		611	my $busy = 1;
		612	my @res;
		613
		614	(async {
		615	$Coro::current->desc ("sync job coro");
		616	@res = eval { $job->() };
		617	error $@ if $@;
		618	undef $busy;
		619	})->prio (Coro::PRIO_MAX);
		620
		621	while ($busy) {
		622	if (Coro::nready) {
		623	Coro::cede_notself;
		624	} else {
		625	EV::loop EV::LOOP_ONESHOT;
		626	}
		627	}
		628
		629	my $time = AE::time - $time;
		630
		631	$TICK_START += $time; # do not account sync jobs to server load
		632
		633	wantarray ? @res : $res[0]
		634	} else {
		635	# we are in another coroutine, how wonderful, everything just works
		636
		637	$job->()
		638	}
		639	}
		640
		641	=item $coro = cf::async_ext { BLOCK }
		642
		643	Like async, but this coro is automatically being canceled when the
		644	extension calling this is being unloaded.
		645
		646	=cut
		647
		648	sub async_ext(&) {
		649	my $cb = shift;
		650
		651	my $coro = &Coro::async ($cb);
		652
		653	$coro->on_destroy (sub {
		654	delete $EXT_CORO{$coro+0};
		655	});
		656	$EXT_CORO{$coro+0} = $coro;
		657
		658	$coro
		659	}
		660
		661	=item fork_call { }, @args
		662
		663	Executes the given code block with the given arguments in a seperate
		664	process, returning the results. Everything must be serialisable with
		665	Coro::Storable. May, of course, block. Note that the executed sub may
		666	never block itself or use any form of event handling.
		667
		668	=cut
		669
		670	sub post_fork {
		671	reset_signals;
		672	}
		673
		674	sub fork_call(&@) {
		675	my ($cb, @args) = @_;
		676
		677	# we seemingly have to make a local copy of the whole thing,
		678	# otherwise perl prematurely frees the stuff :/
		679	# TODO: investigate and fix (likely this will be rather laborious)
		680
		681	my @res = Coro::Util::fork_eval {
		682	cf::post_fork;
		683	&$cb
		684	} @args;
		685
		686	wantarray ? @res : $res[-1]
		687	}
		688
		689	sub objinfo {
		690	(
		691	"counter value" => cf::object::object_count,
		692	"objects created" => cf::object::create_count,
		693	"objects destroyed" => cf::object::destroy_count,
		694	"freelist size" => cf::object::free_count,
		695	"allocated objects" => cf::object::objects_size,
		696	"active objects" => cf::object::actives_size,
		697	)
		698	}
		699
		700	=item $coin = coin_from_name $name
		701
		702	=cut
		703
		704	our %coin_alias = (
		705	"silver" => "silvercoin",
		706	"silvercoin" => "silvercoin",
		707	"silvercoins" => "silvercoin",
		708	"gold" => "goldcoin",
		709	"goldcoin" => "goldcoin",
		710	"goldcoins" => "goldcoin",
		711	"platinum" => "platinacoin",
		712	"platinumcoin" => "platinacoin",
		713	"platinumcoins" => "platinacoin",
		714	"platina" => "platinacoin",
		715	"platinacoin" => "platinacoin",
		716	"platinacoins" => "platinacoin",
		717	"royalty" => "royalty",
		718	"royalties" => "royalty",
		719	);
		720
		721	sub coin_from_name($) {
		722	$coin_alias{$_[0]}
		723	? cf::arch::find $coin_alias{$_[0]}
		724	: undef
		725	}
		726
		727	=item $value = cf::db_get $family => $key
		728
		729	Returns a single value from the environment database.
		730
		731	=item cf::db_put $family => $key => $value
		732
		733	Stores the given C<$value> in the family. It can currently store binary
		734	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		735
		736	=item $db = cf::db_table "name"
		737
		738	Create and/or open a new database table. The string must not be "db" and must be unique
		739	within each server.
		740
		741	=cut
		742
		743	sub db_table($) {
		744	cf::error "db_get called from main context"
		745	if $Coro::current == $Coro::main;
		746
		747	my ($name) = @_;
		748	my $db = BDB::db_create $DB_ENV;
		749
		750	eval {
		751	$db->set_flags (BDB::CHKSUM);
		752
		753	utf8::encode $name;
		754	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		755	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		756	cf::cleanup "db_open(db): $!" if $!;
		757	};
		758	cf::cleanup "db_open(db): $@" if $@;
		759
		760	$db
		761	}
		762
		763	our $DB;
		764
		765	sub db_init {
		766	$DB ||= db_table "db";
		767	}
		768
		769	sub db_get($$) {
		770	my $key = "$_[0]/$_[1]";
		771
		772	cf::error "db_get called from main context"
		773	if $Coro::current == $Coro::main;
		774
		775	BDB::db_get $DB, undef, $key, my $data;
		776
		777	$! ? ()
		778	: $data
		779	}
		780
		781	sub db_put($$$) {
		782	BDB::dbreq_pri 4;
		783	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		784	}
		785
		786	=item cf::cache $id => [$paths...], $processversion => $process
		787
		788	Generic caching function that returns the value of the resource $id,
		789	caching and regenerating as required.
		790
		791	This function can block.
		792
		793	=cut
		794
		795	sub cache {
		796	my ($id, $src, $processversion, $process) = @_;
		797
		798	my $meta =
		799	join "\x00",
		800	$processversion,
		801	map {
		802	aio_stat $_
		803	and Carp::croak "$_: $!";
		804
		805	($_, (stat _)[7,9])
		806	} @$src;
		807
		808	my $dbmeta = db_get cache => "$id/meta";
		809	if ($dbmeta ne $meta) {
		810	# changed, we may need to process
		811
		812	my @data;
		813	my $md5;
		814
		815	for (0 .. $#$src) {
		816	$data[$_] = load_file $src->[$_];
		817	}
		818
		819	# if processing is expensive, check
		820	# checksum first
		821	if (1) {
		822	$md5 =
		823	join "\x00",
		824	$processversion,
		825	map {
		826	cf::cede_to_tick;
		827	($src->[$_], Digest::MD5::md5_hex $data[$_])
		828	} 0.. $#$src;
		829
		830
		831	my $dbmd5 = db_get cache => "$id/md5";
		832	if ($dbmd5 eq $md5) {
		833	db_put cache => "$id/meta", $meta;
		834
		835	return db_get cache => "$id/data";
		836	}
		837	}
		838
		839	my $t1 = Time::HiRes::time;
		840	my $data = $process->(\@data);
		841	my $t2 = Time::HiRes::time;
		842
		843	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		844
		845	db_put cache => "$id/data", $data;
		846	db_put cache => "$id/md5" , $md5;
		847	db_put cache => "$id/meta", $meta;
		848
		849	return $data;
		850	}
		851
		852	db_get cache => "$id/data"
		853	}
		854
		855	=item cf::datalog type => key => value, ...
		856
		857	Log a datalog packet of the given type with the given key-value pairs.
		858
		859	=cut
		860
		861	sub datalog($@) {
		862	my ($type, %kv) = @_;
		863	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
142	}	864	}
143		865
144	=back	866	=back
145		867
146	=cut	868	=cut
147		869
148	#############################################################################	870	#############################################################################
149		871
150	=head2 ATTACHABLE OBJECTS	872	=head2 ATTACHABLE OBJECTS
151		873
152	Many objects in crossfire are so-called attachable objects. That means you can	874	Many objects in deliantra are so-called attachable objects. That means you can
153	attach callbacks/event handlers (a collection of which is called an "attachment")	875	attach callbacks/event handlers (a collection of which is called an "attachment")
154	to it. All such attachable objects support the following methods.	876	to it. All such attachable objects support the following methods.
155		877
156	In the following description, CLASS can be any of C<global>, C<object>	878	In the following description, CLASS can be any of C<global>, C<object>
157	C<player>, C<client> or C<map> (i.e. the attachable objects in	879	C<player>, C<client> or C<map> (i.e. the attachable objects in
158	crossfire+).	880	Deliantra).
159		881
160	=over 4	882	=over 4
161		883
162	=item $attachable->attach ($attachment, key => $value...)	884	=item $attachable->attach ($attachment, key => $value...)
163		885
…		…
207	=item cf::CLASS::attachment $name, ...	929	=item cf::CLASS::attachment $name, ...
208		930
209	Register an attachment by C<$name> through which attachable objects of the	931	Register an attachment by C<$name> through which attachable objects of the
210	given CLASS can refer to this attachment.	932	given CLASS can refer to this attachment.
211		933
212	Some classes such as crossfire maps and objects can specify attachments	934	Some classes such as deliantra maps and objects can specify attachments
213	that are attached at load/instantiate time, thus the need for a name.	935	that are attached at load/instantiate time, thus the need for a name.
214		936
215	These calls expect any number of the following handler/hook descriptions:	937	These calls expect any number of the following handler/hook descriptions:
216		938
217	=over 4	939	=over 4
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	999	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	1000	our @CB_MAP = ();
279		1001
280	my %attachment;	1002	my %attachment;
281		1003
		1004	sub cf::attachable::thawer_merge {
		1005	# simply override everything except _meta
		1006	local $_[0]{_meta};
		1007	%{$_[0]} = %{$_[1]};
		1008	}
		1009
282	sub _attach_cb($$$$) {	1010	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	1011	my ($registry, $event, $prio, $cb) = @_;
284		1012
285	use sort 'stable';	1013	use sort 'stable';
286		1014
…		…
320	$registry = $CB_TYPE[$object_type] ||= [];	1048	$registry = $CB_TYPE[$object_type] ||= [];
321		1049
322	} elsif ($type eq "subtype") {	1050	} elsif ($type eq "subtype") {
323	defined $object_type or Carp::croak "subtype specified without type";	1051	defined $object_type or Carp::croak "subtype specified without type";
324	my $object_subtype = shift @arg;	1052	my $object_subtype = shift @arg;
325	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	1053	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
326		1054
327	} elsif ($type eq "package") {	1055	} elsif ($type eq "package") {
328	my $pkg = shift @arg;	1056	my $pkg = shift @arg;
329		1057
330	while (my ($name, $id) = each %cb_id) {	1058	while (my ($name, $id) = each %cb_id) {
…		…
335		1063
336	} elsif (exists $cb_id{$type}) {	1064	} elsif (exists $cb_id{$type}) {
337	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;	1065	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
338		1066
339	} elsif (ref $type) {	1067	} elsif (ref $type) {
340	warn "attaching objects not supported, ignoring.\n";	1068	error "attaching objects not supported, ignoring.\n";
341		1069
342	} else {	1070	} else {
343	shift @arg;	1071	shift @arg;
344	warn "attach argument '$type' not supported, ignoring.\n";	1072	error "attach argument '$type' not supported, ignoring.\n";
345	}	1073	}
346	}	1074	}
347	}	1075	}
348		1076
349	sub _object_attach {	1077	sub _object_attach {
…		…
359	_attach $registry, $klass, @attach;	1087	_attach $registry, $klass, @attach;
360	}	1088	}
361		1089
362	$obj->{$name} = \%arg;	1090	$obj->{$name} = \%arg;
363	} else {	1091	} else {
364	warn "object uses attachment '$name' that is not available, postponing.\n";	1092	info "object uses attachment '$name' which is not available, postponing.\n";
365	}	1093	}
366		1094
367	$obj->{_attachment}{$name} = undef;	1095	$obj->{_attachment}{$name} = undef;
368	}	1096	}
369		1097
…		…
371	if (ref $_[0]) {	1099	if (ref $_[0]) {
372	_object_attach @_;	1100	_object_attach @_;
373	} else {	1101	} else {
374	_attach shift->_attach_registry, @_;	1102	_attach shift->_attach_registry, @_;
375	}	1103	}
		1104	_recalc_want;
376	};	1105	};
377		1106
378	# all those should be optimised	1107	# all those should be optimised
379	sub cf::attachable::detach {	1108	sub cf::attachable::detach {
380	my ($obj, $name) = @_;	1109	my ($obj, $name) = @_;
…		…
383	delete $obj->{_attachment}{$name};	1112	delete $obj->{_attachment}{$name};
384	reattach ($obj);	1113	reattach ($obj);
385	} else {	1114	} else {
386	Carp::croak "cannot, currently, detach class attachments";	1115	Carp::croak "cannot, currently, detach class attachments";
387	}	1116	}
		1117	_recalc_want;
388	};	1118	};
389		1119
390	sub cf::attachable::attached {	1120	sub cf::attachable::attached {
391	my ($obj, $name) = @_;	1121	my ($obj, $name) = @_;
392		1122
…		…
407	";	1137	";
408	die if $@;	1138	die if $@;
409	}	1139	}
410		1140
411	our $override;	1141	our $override;
412	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1142	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
413		1143
414	sub override {	1144	sub override {
415	$override = 1;	1145	$override = 1;
416	@invoke_results = ();	1146	@INVOKE_RESULTS = (@_);
417	}	1147	}
418		1148
419	sub do_invoke {	1149	sub do_invoke {
420	my $event = shift;	1150	my $event = shift;
421	my $callbacks = shift;	1151	my $callbacks = shift;
422		1152
423	@invoke_results = ();	1153	@INVOKE_RESULTS = ();
424		1154
425	local $override;	1155	local $override;
426		1156
427	for (@$callbacks) {	1157	for (@$callbacks) {
428	eval { &{$_->[1]} };	1158	eval { &{$_->[1]} };
429		1159
430	if ($@) {	1160	if ($@) {
431	warn "$@";
432	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";	1161	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
433	override;	1162	override;
434	}	1163	}
435		1164
436	return 1 if $override;	1165	return 1 if $override;
437	}	1166	}
438		1167
439	0	1168	0
440	}	1169	}
441		1170
442	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)	1171	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
443		1172
444	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)	1173	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
445		1174
446	Generate an object-specific event with the given arguments.	1175	Generate an object-specific event with the given arguments.
447		1176
448	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	1177	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
449	removed in future versions), and there is no public API to access override	1178	removed in future versions), and there is no public API to access override
450	results (if you must, access C<@cf::invoke_results> directly).	1179	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
451		1180
452	=back	1181	=back
453		1182
454	=cut	1183	=cut
455		1184
456	#############################################################################	1185	#############################################################################
457	# object support	1186	# object support
		1187
		1188	sub _object_equal($$);
		1189	sub _object_equal($$) {
		1190	my ($a, $b) = @_;
		1191
		1192	return 0 unless (ref $a) eq (ref $b);
		1193
		1194	if ("HASH" eq ref $a) {
		1195	my @ka = keys %$a;
		1196	my @kb = keys %$b;
		1197
		1198	return 0 if @ka != @kb;
		1199
		1200	for (0 .. $#ka) {
		1201	return 0 unless $ka[$_] eq $kb[$_];
		1202	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1203	}
		1204
		1205	} elsif ("ARRAY" eq ref $a) {
		1206
		1207	return 0 if @$a != @$b;
		1208
		1209	for (0 .. $#$a) {
		1210	return 0 unless _object_equal $a->[$_], $b->[$_];
		1211	}
		1212
		1213	} elsif ($a ne $b) {
		1214	return 0;
		1215	}
		1216
		1217	1
		1218	}
		1219
		1220	our $SLOW_MERGES;#d#
		1221	sub _can_merge {
		1222	my ($ob1, $ob2) = @_;
		1223
		1224	++$SLOW_MERGES;#d#
		1225
		1226	# we do the slow way here
		1227	return _object_equal $ob1, $ob2
		1228	}
		1229
		1230	sub reattach {
		1231	# basically do the same as instantiate, without calling instantiate
		1232	my ($obj) = @_;
		1233
		1234	# no longer needed after getting rid of delete_package?
		1235	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1236
		1237	my $registry = $obj->registry;
		1238
		1239	@$registry = ();
		1240
		1241	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		1242
		1243	for my $name (keys %{ $obj->{_attachment} || {} }) {
		1244	if (my $attach = $attachment{$name}) {
		1245	for (@$attach) {
		1246	my ($klass, @attach) = @$_;
		1247	_attach $registry, $klass, @attach;
		1248	}
		1249	} else {
		1250	info "object uses attachment '$name' that is not available, postponing.\n";
		1251	}
		1252	}
		1253	}
458		1254
459	cf::attachable->attach (	1255	cf::attachable->attach (
460	prio => -1000000,	1256	prio => -1000000,
461	on_instantiate => sub {	1257	on_instantiate => sub {
462	my ($obj, $data) = @_;	1258	my ($obj, $data) = @_;
463		1259
464	$data = from_json $data;	1260	$data = decode_json $data;
465		1261
466	for (@$data) {	1262	for (@$data) {
467	my ($name, $args) = @$_;	1263	my ($name, $args) = @$_;
468		1264
469	$obj->attach ($name, %{$args || {} });	1265	$obj->attach ($name, %{$args || {} });
470	}	1266	}
471	},	1267	},
472	on_reattach => sub {	1268	on_reattach => \&reattach,
473	# basically do the same as instantiate, without calling instantiate
474	my ($obj) = @_;
475	my $registry = $obj->registry;
476
477	@$registry = ();
478
479	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
480
481	for my $name (keys %{ $obj->{_attachment} || {} }) {
482	if (my $attach = $attachment{$name}) {
483	for (@$attach) {
484	my ($klass, @attach) = @$_;
485	_attach $registry, $klass, @attach;
486	}
487	} else {
488	warn "object uses attachment '$name' that is not available, postponing.\n";
489	}
490	}
491	},
492	on_clone => sub {	1269	on_clone => sub {
493	my ($src, $dst) = @_;	1270	my ($src, $dst) = @_;
494		1271
495	@{$dst->registry} = @{$src->registry};	1272	@{$dst->registry} = @{$src->registry};
496		1273
…		…
502	);	1279	);
503		1280
504	sub object_freezer_save {	1281	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	1282	my ($filename, $rdata, $objs) = @_;
506		1283
		1284	sync_job {
507	if (length $$rdata) {	1285	if (length $$rdata) {
		1286	utf8::decode (my $decname = $filename);
508	warn sprintf "saving %s (%d,%d)\n",	1287	trace sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	1288	$decname, length $$rdata, scalar @$objs
		1289	if $VERBOSE_IO;
510		1290
511	if (open my $fh, ">:raw", "$filename~") {	1291	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	1292	aio_chmod $fh, SAVE_MODE;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1293	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1294	if ($cf::USE_FSYNC) {
		1295	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1296	aio_fsync $fh;
		1297	}
519	close $fh;	1298	aio_close $fh;
		1299
		1300	if (@$objs) {
		1301	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1302	aio_chmod $fh, SAVE_MODE;
		1303	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1304	aio_write $fh, 0, (length $data), $data, 0;
		1305	if ($cf::USE_FSYNC) {
		1306	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1307	aio_fsync $fh;
		1308	}
		1309	aio_close $fh;
520	rename "$filename.pst~", "$filename.pst";	1310	aio_rename "$filename.pst~", "$filename.pst";
		1311	}
		1312	} else {
		1313	aio_unlink "$filename.pst";
		1314	}
		1315
		1316	aio_rename "$filename~", $filename;
		1317
		1318	$filename =~ s%/[^/]+$%%;
		1319	aio_pathsync $filename if $cf::USE_FSYNC;
521	} else {	1320	} else {
522	unlink "$filename.pst";	1321	error "unable to save objects: $filename~: $!\n";
523	}	1322	}
524
525	rename "$filename~", $filename;
526	} else {	1323	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	1324	aio_unlink $filename;
531	unlink "$filename.pst";	1325	aio_unlink "$filename.pst";
		1326	}
532	}	1327	};
533	}	1328	}
534		1329
535	sub object_freezer_as_string {	1330	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	1331	my ($rdata, $objs) = @_;
537		1332
…		…
541	}	1336	}
542		1337
543	sub object_thawer_load {	1338	sub object_thawer_load {
544	my ($filename) = @_;	1339	my ($filename) = @_;
545		1340
546	local $/;
547
548	my $av;
549
550	#TODO: use sysread etc.
551	if (open my $data, "<:raw:perlio", $filename) {
552	$data = <$data>;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };
555	}
556	return ($data, $av);	1341	my ($data, $av);
557	}
558		1342
559	()	1343	(aio_load $filename, $data) >= 0
		1344	or return;
		1345
		1346	unless (aio_stat "$filename.pst") {
		1347	(aio_load "$filename.pst", $av) >= 0
		1348	or return;
		1349
		1350	my $st = eval { Coro::Storable::thaw $av };
		1351	$av = $st->{objs};
		1352	}
		1353
		1354	utf8::decode (my $decname = $filename);
		1355	trace sprintf "loading %s (%d,%d)\n",
		1356	$decname, length $data, scalar @{$av || []}
		1357	if $VERBOSE_IO;
		1358
		1359	($data, $av)
560	}	1360	}
		1361
		1362	=head2 COMMAND CALLBACKS
		1363
		1364	=over 4
		1365
		1366	=cut
561		1367
562	#############################################################################	1368	#############################################################################
563	# command handling &c	1369	# command handling &c
564		1370
565	=item cf::register_command $name => \&callback($ob,$args);	1371	=item cf::register_command $name => \&callback($ob,$args);
…		…
578	push @{ $COMMAND{$name} }, [$caller, $cb];	1384	push @{ $COMMAND{$name} }, [$caller, $cb];
579	}	1385	}
580		1386
581	=item cf::register_extcmd $name => \&callback($pl,$packet);	1387	=item cf::register_extcmd $name => \&callback($pl,$packet);
582		1388
583	Register a callbackf ro execution when the client sends an extcmd packet.	1389	Register a callback for execution when the client sends an (synchronous)
		1390	extcmd packet. Ext commands will be processed in the order they are
		1391	received by the server, like other user commands. The first argument is
		1392	the logged-in player. Ext commands can only be processed after a player
		1393	has logged in successfully.
584		1394
585	If the callback returns something, it is sent back as if reply was being	1395	If the callback returns something, it is sent back as if reply was being
586	called.	1396	called.
587		1397
		1398	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1399
		1400	Register a callback for execution when the client sends an (asynchronous)
		1401	exticmd packet. Exti commands are processed by the server as soon as they
		1402	are received, i.e. out of order w.r.t. other commands. The first argument
		1403	is a client socket. Exti commands can be received anytime, even before
		1404	log-in.
		1405
		1406	If the callback returns something, it is sent back as if reply was being
		1407	called.
		1408
588	=cut	1409	=cut
589		1410
590	sub register_extcmd {	1411	sub register_extcmd {
591	my ($name, $cb) = @_;	1412	my ($name, $cb) = @_;
592		1413
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	1414	$EXTCMD{$name} = $cb;
597	}	1415	}
		1416
		1417	sub register_exticmd {
		1418	my ($name, $cb) = @_;
		1419
		1420	$EXTICMD{$name} = $cb;
		1421	}
		1422
		1423	use File::Glob ();
598		1424
599	cf::player->attach (	1425	cf::player->attach (
600	on_command => sub {	1426	on_unknown_command => sub {
601	my ($pl, $name, $params) = @_;	1427	my ($pl, $name, $params) = @_;
602		1428
603	my $cb = $COMMAND{$name}	1429	my $cb = $COMMAND{$name}
604	or return;	1430	or return;
605		1431
…		…
610	cf::override;	1436	cf::override;
611	},	1437	},
612	on_extcmd => sub {	1438	on_extcmd => sub {
613	my ($pl, $buf) = @_;	1439	my ($pl, $buf) = @_;
614		1440
615	my $msg = eval { from_json $buf };	1441	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
616		1442
617	if (ref $msg) {	1443	if (ref $msg) {
		1444	my ($type, $reply, @payload) =
		1445	"ARRAY" eq ref $msg
		1446	? @$msg
		1447	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1448
		1449	my @reply;
		1450
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1451	if (my $cb = $EXTCMD{$type}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	1452	@reply = $cb->($pl, @payload);
620	$pl->ext_reply ($msg->{msgid}, %reply);
621	}
622	}	1453	}
		1454
		1455	$pl->ext_reply ($reply, @reply)
		1456	if $reply;
		1457
623	} else {	1458	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1459	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
625	}	1460	}
626		1461
627	cf::override;	1462	cf::override;
628	},	1463	},
629	);	1464	);
630		1465
631	sub register {	1466	# "readahead" all extensions
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	1467	sub cache_extensions {
638	my ($path) = @_;	1468	my $grp = IO::AIO::aio_group;
639		1469
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1470	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
641	my $base = $1;	1471	for (grep /\.ext$/, @{$_[0]}) {
642	my $pkg = $1;	1472	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
643	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";
645
646	warn "loading '$path' into '$pkg'\n";
647
648	open my $fh, "<:utf8", $path
649	or die "$path: $!";
650
651	my $source =
652	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })
655	. "\n};\n1";
656
657	eval $source
658	or die $@ ? "$path: $@\n"
659	: "extension disabled.\n";
660
661	push @exts, $pkg;
662	$ext_pkg{$base} = $pkg;
663
664	# no strict 'refs';
665	# @{"$pkg\::ISA"} = ext::;
666
667	register $base, $pkg;
668	}
669
670	sub unload_extension {
671	my ($pkg) = @_;
672
673	warn "removing extension $pkg\n";
674
675	# remove hooks
676	#TODO
677	# for my $idx (0 .. $#PLUGIN_EVENT) {
678	# delete $hook[$idx]{$pkg};
679	# }
680
681	# remove commands
682	for my $name (keys %COMMAND) {
683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
684
685	if (@cb) {
686	$COMMAND{$name} = \@cb;
687	} else {
688	delete $COMMAND{$name};
689	}	1473	}
690	}	1474	};
691		1475
692	# remove extcmds	1476	$grp
693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
694	delete $EXTCMD{$name};
695	}
696
697	if (my $cb = $pkg->can ("unload")) {
698	eval {
699	$cb->($pkg);
700	1
701	} or warn "$pkg unloaded, but with errors: $@";
702	}
703
704	Symbol::delete_package $pkg;
705	}	1477	}
706		1478
707	sub load_extensions {	1479	sub load_extensions {
		1480	info "loading extensions...";
		1481
		1482	cf::sync_job {
		1483	my %todo;
		1484
708	for my $ext (<$LIBDIR/*.ext>) {	1485	for my $path (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	1486	next unless -r $path;
710	eval {	1487
711	load_extension $ext;	1488	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1489	my $base = $1;
		1490	my $pkg = $1;
		1491	$pkg =~ s/[^[:word:]]/_/g;
		1492	$pkg = "ext::$pkg";
		1493
		1494	open my $fh, "<:utf8", $path
		1495	or die "$path: $!";
		1496
		1497	my $source = do { local $/; <$fh> };
		1498
		1499	my %ext = (
		1500	path => $path,
		1501	base => $base,
		1502	pkg => $pkg,
		1503	);
		1504
		1505	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1506	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1507
		1508	$ext{source} =
		1509	"package $pkg; use common::sense;\n"
		1510	. "#line 1 \"$path\"\n{\n"
		1511	. $source
		1512	. "\n};\n1";
		1513
		1514	$todo{$base} = \%ext;
		1515	}
		1516
		1517	my $pass = 0;
		1518	my %done;
		1519	while (%todo) {
		1520	my $progress;
		1521
		1522	++$pass;
		1523
		1524	ext:
		1525	while (my ($k, $v) = each %todo) {
		1526	for (split /,\s*/, $v->{meta}{depends}) {
		1527	next ext
		1528	unless exists $done{$_};
		1529	}
		1530
		1531	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1532
		1533	my $active = eval $v->{source};
		1534
		1535	if (length $@) {
		1536	error "$v->{path}: $@\n";
		1537
		1538	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1539	if exists $v->{meta}{mandatory};
		1540
		1541	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1542	delete $todo{$k};
		1543	} else {
		1544	$done{$k} = delete $todo{$k};
		1545	push @EXTS, $v->{pkg};
		1546	$progress = 1;
		1547
		1548	info "$v->{base}: extension inactive.\n"
		1549	unless $active;
		1550	}
712	1	1551	}
713	} or warn "$ext not loaded: $@";	1552
		1553	unless ($progress) {
		1554	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1555
		1556	while (my ($k, $v) = each %todo) {
		1557	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1558	if exists $v->{meta}{mandatory};
		1559	}
		1560
		1561	last;
		1562	}
		1563	}
714	}	1564	};
715	}	1565	}
716		1566
717	#############################################################################	1567	#############################################################################
718	# load/save/clean perl data associated with a map
719		1568
720	*cf::mapsupport::on_clean = sub {	1569	=back
		1570
		1571	=head2 CORE EXTENSIONS
		1572
		1573	Functions and methods that extend core deliantra objects.
		1574
		1575	=cut
		1576
		1577	package cf::player;
		1578
		1579	use Coro::AIO;
		1580
		1581	=head3 cf::player
		1582
		1583	=over 4
		1584
		1585	=item cf::player::num_playing
		1586
		1587	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1588
		1589	=cut
		1590
		1591	sub num_playing {
		1592	scalar grep
		1593	$_->ob->map
		1594	&& !$_->hidden
		1595	&& !$_->ob->flag (cf::FLAG_WIZ),
		1596	cf::player::list
		1597	}
		1598
		1599	=item cf::player::find $login
		1600
		1601	Returns the given player object, loading it if necessary (might block).
		1602
		1603	=cut
		1604
		1605	sub playerdir($) {
		1606	"$PLAYERDIR/"
		1607	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1608	}
		1609
		1610	sub path($) {
		1611	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1612
		1613	(playerdir $login) . "/playerdata"
		1614	}
		1615
		1616	sub find_active($) {
		1617	$cf::PLAYER{$_[0]}
		1618	and $cf::PLAYER{$_[0]}->active
		1619	and $cf::PLAYER{$_[0]}
		1620	}
		1621
		1622	sub exists($) {
721	my ($map) = @_;	1623	my ($login) = @_;
722		1624
723	my $path = $map->tmpname;	1625	$cf::PLAYER{$login}
724	defined $path or return;	1626	or !aio_stat path $login
725
726	unlink "$path.pst";
727	};
728
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);
730
731	#############################################################################
732	# load/save perl data associated with player->ob objects
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}	1627	}
737		1628
738	# TODO: compatibility cruft, remove when no longer needed	1629	sub find($) {
		1630	return $cf::PLAYER{$_[0]} || do {
		1631	my $login = $_[0];
		1632
		1633	my $guard = cf::lock_acquire "user_find:$login";
		1634
		1635	$cf::PLAYER{$_[0]} || do {
		1636	# rename old playerfiles to new ones
		1637	#TODO: remove when no longer required
		1638	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1639	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1640	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1641	aio_unlink +(playerdir $login) . "/$login.pl";
		1642
		1643	my $f = new_from_file cf::object::thawer path $login
		1644	or return;
		1645
		1646	my $pl = cf::player::load_pl $f
		1647	or return;
		1648
		1649	local $cf::PLAYER_LOADING{$login} = $pl;
		1650	$f->resolve_delayed_derefs;
		1651	$cf::PLAYER{$login} = $pl
		1652	}
		1653	}
		1654	}
		1655
739	cf::player->attach (	1656	cf::player->attach (
740	on_load => sub {	1657	on_load => sub {
741	my ($pl, $path) = @_;	1658	my ($pl, $path) = @_;
742		1659
743	for my $o (all_objects $pl->ob) {	1660	# restore slots saved in save, below
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1661	my $slots = delete $pl->{_slots};
745	$o->set_ob_key_value ("_perl_data");
746		1662
747	%$o = %{ Storable::thaw pack "H*", $value };	1663	$pl->ob->current_weapon ($slots->[0]);
748	}	1664	$pl->combat_ob ($slots->[1]);
749	}	1665	$pl->ranged_ob ($slots->[2]);
750	},	1666	},
751	);	1667	);
752		1668
753	#############################################################################	1669	sub save($) {
		1670	my ($pl) = @_;
754		1671
755	=head2 CORE EXTENSIONS	1672	return if $pl->{deny_save};
756		1673
757	Functions and methods that extend core crossfire objects.	1674	my $path = path $pl;
		1675	my $guard = cf::lock_acquire "user_save:$path";
758		1676
759	=head3 cf::player	1677	return if $pl->{deny_save};
		1678
		1679	aio_mkdir playerdir $pl, 0770;
		1680	$pl->{last_save} = $cf::RUNTIME;
		1681
		1682	cf::get_slot 0.01;
		1683
		1684	# save slots, to be restored later
		1685	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1686
		1687	$pl->save_pl ($path);
		1688	cf::cede_to_tick;
		1689	}
		1690
		1691	sub new($) {
		1692	my ($login) = @_;
		1693
		1694	my $self = create;
		1695
		1696	$self->ob->name ($login);
		1697	$self->{deny_save} = 1;
		1698
		1699	$cf::PLAYER{$login} = $self;
		1700
		1701	$self
		1702	}
		1703
		1704	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1705
		1706	=cut
		1707
		1708	sub send_msg {
		1709	my $ns = shift->ns
		1710	or return;
		1711	$ns->send_msg (@_);
		1712	}
		1713
		1714	=item $pl->quit_character
		1715
		1716	Nukes the player without looking back. If logged in, the connection will
		1717	be destroyed. May block for a long time.
		1718
		1719	=cut
		1720
		1721	sub quit_character {
		1722	my ($pl) = @_;
		1723
		1724	my $name = $pl->ob->name;
		1725
		1726	$pl->{deny_save} = 1;
		1727	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1728
		1729	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1730	$pl->deactivate;
		1731
		1732	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1733	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1734	ext::highscore::check ($pl->ob);
		1735
		1736	$pl->ns->destroy if $pl->ns;
		1737
		1738	my $path = playerdir $pl;
		1739	my $temp = "$path~$cf::RUNTIME~deleting~";
		1740	aio_rename $path, $temp;
		1741	delete $cf::PLAYER{$pl->ob->name};
		1742	$pl->destroy;
		1743
		1744	my $prefix = qr<^~\Q$name\E/>;
		1745
		1746	# nuke player maps
		1747	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1748
		1749	IO::AIO::aio_rmtree $temp;
		1750	}
		1751
		1752	=item $pl->kick
		1753
		1754	Kicks a player out of the game. This destroys the connection.
		1755
		1756	=cut
		1757
		1758	sub kick {
		1759	my ($pl, $kicker) = @_;
		1760
		1761	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1762	$pl->killer ("kicked");
		1763	$pl->ns->destroy;
		1764	}
		1765
		1766	=item cf::player::list_logins
		1767
		1768	Returns am arrayref of all valid playernames in the system, can take a
		1769	while and may block, so not sync_job-capable, ever.
		1770
		1771	=cut
		1772
		1773	sub list_logins {
		1774	my $dirs = aio_readdir $PLAYERDIR
		1775	or return [];
		1776
		1777	my @logins;
		1778
		1779	for my $login (@$dirs) {
		1780	my $path = path $login;
		1781
		1782	# a .pst is a dead give-away for a valid player
		1783	# if no pst file found, open and chekc for blocked users
		1784	if (aio_stat "$path.pst") {
		1785	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1786	aio_read $fh, 0, 512, my $buf, 0 or next;
		1787	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1788	}
		1789
		1790	utf8::decode $login;
		1791	push @logins, $login;
		1792	}
		1793
		1794	\@logins
		1795	}
		1796
		1797	=item $player->maps
		1798
		1799	=item cf::player::maps $login
		1800
		1801	Returns an arrayref of map paths that are private for this
		1802	player. May block.
		1803
		1804	=cut
		1805
		1806	sub maps($) {
		1807	my ($pl) = @_;
		1808
		1809	$pl = ref $pl ? $pl->ob->name : $pl;
		1810
		1811	my $files = aio_readdir playerdir $pl
		1812	or return;
		1813
		1814	my @paths;
		1815
		1816	for (@$files) {
		1817	utf8::decode $_;
		1818	next if /\.(?:pl|pst)$/;
		1819	next unless /^$PATH_SEP/o;
		1820
		1821	push @paths, cf::map::normalise "~$pl/$_";
		1822	}
		1823
		1824	\@paths
		1825	}
		1826
		1827	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1828
		1829	Expand deliantra pod fragments into protocol xml.
		1830
		1831	=item $player->ext_reply ($msgid, @msg)
		1832
		1833	Sends an ext reply to the player.
		1834
		1835	=cut
		1836
		1837	sub ext_reply($$@) {
		1838	my ($self, $id, @msg) = @_;
		1839
		1840	$self->ns->ext_reply ($id, @msg)
		1841	}
		1842
		1843	=item $player->ext_msg ($type, @msg)
		1844
		1845	Sends an ext event to the client.
		1846
		1847	=cut
		1848
		1849	sub ext_msg($$@) {
		1850	my ($self, $type, @msg) = @_;
		1851
		1852	$self->ns->ext_msg ($type, @msg);
		1853	}
		1854
		1855	=head3 cf::region
760		1856
761	=over 4	1857	=over 4
762		1858
763	=item cf::player::exists $login
764
765	Returns true when the given account exists.
766
767	=cut	1859	=cut
768		1860
769	sub cf::player::exists($) {	1861	package cf::region;
770	cf::player::find $_[0]
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
772	}
773		1862
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1863	=item cf::region::find_by_path $path
775		1864
776	Sends an ext reply to the player.	1865	Tries to decuce the likely region for a map knowing only its path.
777		1866
778	=cut	1867	=cut
779		1868
780	sub cf::player::ext_reply($$$%) {	1869	sub find_by_path($) {
		1870	my ($path) = @_;
		1871
		1872	$path =~ s/^~[^\/]*//; # skip ~login
		1873
		1874	my ($match, $specificity);
		1875
		1876	for my $region (list) {
		1877	if ($region->{match} && $path =~ $region->{match}) {
		1878	($match, $specificity) = ($region, $region->specificity)
		1879	if $region->specificity > $specificity;
		1880	}
		1881	}
		1882
		1883	$match
		1884	}
		1885
		1886	=back
		1887
		1888	=head3 cf::map
		1889
		1890	=over 4
		1891
		1892	=cut
		1893
		1894	package cf::map;
		1895
		1896	use Fcntl;
		1897	use Coro::AIO;
		1898
		1899	use overload
		1900	'""' => \&as_string,
		1901	fallback => 1;
		1902
		1903	our $MAX_RESET = 3600;
		1904	our $DEFAULT_RESET = 3000;
		1905
		1906	sub generate_random_map {
		1907	my ($self, $rmp) = @_;
		1908
		1909	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1910
		1911	$self->_create_random_map ($rmp);
		1912	}
		1913
		1914	=item cf::map->register ($regex, $prio)
		1915
		1916	Register a handler for the map path matching the given regex at the
		1917	givne priority (higher is better, built-in handlers have priority 0, the
		1918	default).
		1919
		1920	=cut
		1921
		1922	sub register {
		1923	my (undef, $regex, $prio) = @_;
		1924	my $pkg = caller;
		1925
		1926	push @{"$pkg\::ISA"}, __PACKAGE__;
		1927
		1928	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1929	}
		1930
		1931	# also paths starting with '/'
		1932	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1933
		1934	sub thawer_merge {
781	my ($self, $id, %msg) = @_;	1935	my ($self, $merge) = @_;
782		1936
783	$msg{msgid} = $id;	1937	# we have to keep some variables in memory intact
		1938	local $self->{path};
		1939	local $self->{load_path};
784		1940
785	$self->send ("ext " . to_json \%msg);	1941	$self->SUPER::thawer_merge ($merge);
786	}	1942	}
		1943
		1944	sub normalise {
		1945	my ($path, $base) = @_;
		1946
		1947	$path = "$path"; # make sure it's a string
		1948
		1949	$path =~ s/\.map$//;
		1950
		1951	# map plan:
		1952	#
		1953	# /! non-realised random map exit (special hack!)
		1954	# {... are special paths that are not being touched
		1955	# ?xxx/... are special absolute paths
		1956	# ?random/... random maps
		1957	# /... normal maps
		1958	# ~user/... per-player map of a specific user
		1959
		1960	$path =~ s/$PATH_SEP/\//go;
		1961
		1962	# treat it as relative path if it starts with
		1963	# something that looks reasonable
		1964	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1965	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1966
		1967	$base =~ s{[^/]+/?$}{};
		1968	$path = "$base/$path";
		1969	}
		1970
		1971	for ($path) {
		1972	redo if s{/\.?/}{/};
		1973	redo if s{/[^/]+/\.\./}{/};
		1974	}
		1975
		1976	$path
		1977	}
		1978
		1979	sub new_from_path {
		1980	my (undef, $path, $base) = @_;
		1981
		1982	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1983
		1984	$path = normalise $path, $base;
		1985
		1986	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1987	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1988	my $self = bless cf::map::new, $pkg;
		1989	$self->{path} = $path; $self->path ($path);
		1990	$self->init; # pass $1 etc.
		1991	return $self;
		1992	}
		1993	}
		1994
		1995	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1996	()
		1997	}
		1998
		1999	# may re-bless or do other evil things
		2000	sub init {
		2001	my ($self) = @_;
		2002
		2003	$self
		2004	}
		2005
		2006	sub as_string {
		2007	my ($self) = @_;
		2008
		2009	"$self->{path}"
		2010	}
		2011
		2012	# the displayed name, this is a one way mapping
		2013	sub visible_name {
		2014	&as_string
		2015	}
		2016
		2017	# the original (read-only) location
		2018	sub load_path {
		2019	my ($self) = @_;
		2020
		2021	"$MAPDIR/$self->{path}.map"
		2022	}
		2023
		2024	# the temporary/swap location
		2025	sub save_path {
		2026	my ($self) = @_;
		2027
		2028	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2029	"$TMPDIR/$path.map"
		2030	}
		2031
		2032	# the unique path, undef == no special unique path
		2033	sub uniq_path {
		2034	my ($self) = @_;
		2035
		2036	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2037	"$UNIQUEDIR/$path"
		2038	}
		2039
		2040	sub decay_objects {
		2041	my ($self) = @_;
		2042
		2043	return if $self->{deny_reset};
		2044
		2045	$self->do_decay_objects;
		2046	}
		2047
		2048	sub unlink_save {
		2049	my ($self) = @_;
		2050
		2051	utf8::encode (my $save = $self->save_path);
		2052	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2053	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2054	}
		2055
		2056	sub load_header_from($) {
		2057	my ($self, $path) = @_;
		2058
		2059	utf8::encode $path;
		2060	my $f = new_from_file cf::object::thawer $path
		2061	or return;
		2062
		2063	$self->_load_header ($f)
		2064	or return;
		2065
		2066	local $MAP_LOADING{$self->{path}} = $self;
		2067	$f->resolve_delayed_derefs;
		2068
		2069	$self->{load_path} = $path;
		2070
		2071	1
		2072	}
		2073
		2074	sub load_header_orig {
		2075	my ($self) = @_;
		2076
		2077	$self->load_header_from ($self->load_path)
		2078	}
		2079
		2080	sub load_header_temp {
		2081	my ($self) = @_;
		2082
		2083	$self->load_header_from ($self->save_path)
		2084	}
		2085
		2086	sub prepare_temp {
		2087	my ($self) = @_;
		2088
		2089	$self->last_access ((delete $self->{last_access})
		2090	|| $cf::RUNTIME); #d#
		2091	# safety
		2092	$self->{instantiate_time} = $cf::RUNTIME
		2093	if $self->{instantiate_time} > $cf::RUNTIME;
		2094	}
		2095
		2096	sub prepare_orig {
		2097	my ($self) = @_;
		2098
		2099	$self->{load_original} = 1;
		2100	$self->{instantiate_time} = $cf::RUNTIME;
		2101	$self->last_access ($cf::RUNTIME);
		2102	$self->instantiate;
		2103	}
		2104
		2105	sub load_header {
		2106	my ($self) = @_;
		2107
		2108	if ($self->load_header_temp) {
		2109	$self->prepare_temp;
		2110	} else {
		2111	$self->load_header_orig
		2112	or return;
		2113	$self->prepare_orig;
		2114	}
		2115
		2116	$self->{deny_reset} = 1
		2117	if $self->no_reset;
		2118
		2119	$self->default_region (cf::region::find_by_path $self->{path})
		2120	unless $self->default_region;
		2121
		2122	1
		2123	}
		2124
		2125	sub find;
		2126	sub find {
		2127	my ($path, $origin) = @_;
		2128
		2129	cf::cede_to_tick;
		2130
		2131	$path = normalise $path, $origin && $origin->path;
		2132
		2133	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2134	my $guard2 = cf::lock_acquire "map_find:$path";
		2135
		2136	$cf::MAP{$path} || do {
		2137	my $map = new_from_path cf::map $path
		2138	or return;
		2139
		2140	$map->{last_save} = $cf::RUNTIME;
		2141
		2142	$map->load_header
		2143	or return;
		2144
		2145	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2146	# doing this can freeze the server in a sync job, obviously
		2147	#$cf::WAIT_FOR_TICK->wait;
		2148	undef $guard2;
		2149	undef $guard1;
		2150	$map->reset;
		2151	return find $path;
		2152	}
		2153
		2154	$cf::MAP{$path} = $map
		2155	}
		2156	}
		2157
		2158	sub pre_load { }
		2159	#sub post_load { } # XS
		2160
		2161	sub load {
		2162	my ($self) = @_;
		2163
		2164	local $self->{deny_reset} = 1; # loading can take a long time
		2165
		2166	my $path = $self->{path};
		2167
		2168	{
		2169	my $guard = cf::lock_acquire "map_data:$path";
		2170
		2171	return unless $self->valid;
		2172	return unless $self->in_memory == cf::MAP_SWAPPED;
		2173
		2174	$self->in_memory (cf::MAP_LOADING);
		2175
		2176	$self->alloc;
		2177
		2178	$self->pre_load;
		2179	cf::cede_to_tick;
		2180
		2181	if (exists $self->{load_path}) {
		2182	my $f = new_from_file cf::object::thawer $self->{load_path};
		2183	$f->skip_block;
		2184	$self->_load_objects ($f)
		2185	or return;
		2186
		2187	$self->post_load_original
		2188	if delete $self->{load_original};
		2189
		2190	if (my $uniq = $self->uniq_path) {
		2191	utf8::encode $uniq;
		2192	unless (aio_stat $uniq) {
		2193	if (my $f = new_from_file cf::object::thawer $uniq) {
		2194	$self->clear_unique_items;
		2195	$self->_load_objects ($f);
		2196	$f->resolve_delayed_derefs;
		2197	}
		2198	}
		2199	}
		2200
		2201	$f->resolve_delayed_derefs;
		2202	}
		2203
		2204	cf::cede_to_tick;
		2205	# now do the right thing for maps
		2206	$self->link_multipart_objects;
		2207	$self->difficulty ($self->estimate_difficulty)
		2208	unless $self->difficulty;
		2209	cf::cede_to_tick;
		2210
		2211	unless ($self->{deny_activate}) {
		2212	$self->decay_objects;
		2213	$self->fix_auto_apply;
		2214	$self->update_buttons;
		2215	cf::cede_to_tick;
		2216	$self->activate;
		2217	}
		2218
		2219	$self->{last_save} = $cf::RUNTIME;
		2220	$self->last_access ($cf::RUNTIME);
		2221
		2222	$self->in_memory (cf::MAP_ACTIVE);
		2223	}
		2224
		2225	$self->post_load;
		2226
		2227	1
		2228	}
		2229
		2230	# customize the map for a given player, i.e.
		2231	# return the _real_ map. used by e.g. per-player
		2232	# maps to change the path to ~playername/mappath
		2233	sub customise_for {
		2234	my ($self, $ob) = @_;
		2235
		2236	return find "~" . $ob->name . "/" . $self->{path}
		2237	if $self->per_player;
		2238
		2239	# return find "?party/" . $ob->name . "/" . $self->{path}
		2240	# if $self->per_party;
		2241
		2242	$self
		2243	}
		2244
		2245	# find and load all maps in the 3x3 area around a map
		2246	sub load_neighbours {
		2247	my ($map) = @_;
		2248
		2249	my @neigh; # diagonal neighbours
		2250
		2251	for (0 .. 3) {
		2252	my $neigh = $map->tile_path ($_)
		2253	or next;
		2254	$neigh = find $neigh, $map
		2255	or next;
		2256	$neigh->load;
		2257
		2258	# now find the diagonal neighbours
		2259	push @neigh,
		2260	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2261	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2262	}
		2263
		2264	for (grep defined $_->[0], @neigh) {
		2265	my ($path, $origin) = @$_;
		2266	my $neigh = find $path, $origin
		2267	or next;
		2268	$neigh->load;
		2269	}
		2270	}
		2271
		2272	sub find_sync {
		2273	my ($path, $origin) = @_;
		2274
		2275	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2276	if $Coro::current == $Coro::main;
		2277
		2278	find $path, $origin
		2279	}
		2280
		2281	sub do_load_sync {
		2282	my ($map) = @_;
		2283
		2284	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2285	if $Coro::current == $Coro::main;
		2286
		2287	$map->load;
		2288	}
		2289
		2290	our %MAP_PREFETCH;
		2291	our $MAP_PREFETCHER = undef;
		2292
		2293	sub find_async {
		2294	my ($path, $origin, $load) = @_;
		2295
		2296	$path = normalise $path, $origin && $origin->{path};
		2297
		2298	if (my $map = $cf::MAP{$path}) {
		2299	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2300	}
		2301
		2302	$MAP_PREFETCH{$path} |= $load;
		2303
		2304	$MAP_PREFETCHER ||= cf::async {
		2305	$Coro::current->{desc} = "map prefetcher";
		2306
		2307	while (%MAP_PREFETCH) {
		2308	while (my ($k, $v) = each %MAP_PREFETCH) {
		2309	if (my $map = find $k) {
		2310	$map->load if $v;
		2311	}
		2312
		2313	delete $MAP_PREFETCH{$k};
		2314	}
		2315	}
		2316	undef $MAP_PREFETCHER;
		2317	};
		2318	$MAP_PREFETCHER->prio (6);
		2319
		2320	()
		2321	}
		2322
		2323	# common code, used by both ->save and ->swapout
		2324	sub _save {
		2325	my ($self) = @_;
		2326
		2327	$self->{last_save} = $cf::RUNTIME;
		2328
		2329	return unless $self->dirty;
		2330
		2331	my $save = $self->save_path; utf8::encode $save;
		2332	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2333
		2334	$self->{load_path} = $save;
		2335
		2336	return if $self->{deny_save};
		2337
		2338	local $self->{last_access} = $self->last_access;#d#
		2339
		2340	cf::async {
		2341	$Coro::current->{desc} = "map player save";
		2342	$_->contr->save for $self->players;
		2343	};
		2344
		2345	cf::get_slot 0.02;
		2346
		2347	if ($uniq) {
		2348	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2349	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2350	} else {
		2351	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2352	}
		2353	}
		2354
		2355	sub save {
		2356	my ($self) = @_;
		2357
		2358	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2359
		2360	$self->_save;
		2361	}
		2362
		2363	sub swap_out {
		2364	my ($self) = @_;
		2365
		2366	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2367
		2368	return if $self->in_memory != cf::MAP_ACTIVE;
		2369	return if $self->{deny_save};
		2370	return if $self->players;
		2371
		2372	# first deactivate the map and "unlink" it from the core
		2373	$self->deactivate;
		2374	$_->clear_links_to ($self) for values %cf::MAP;
		2375	$self->in_memory (cf::MAP_SWAPPED);
		2376
		2377	# then atomically save
		2378	$self->_save;
		2379
		2380	# then free the map
		2381	$self->clear;
		2382	}
		2383
		2384	sub reset_at {
		2385	my ($self) = @_;
		2386
		2387	# TODO: safety, remove and allow resettable per-player maps
		2388	return 1e99 if $self->{deny_reset};
		2389
		2390	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2391	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2392
		2393	$time + $to
		2394	}
		2395
		2396	sub should_reset {
		2397	my ($self) = @_;
		2398
		2399	$self->reset_at <= $cf::RUNTIME
		2400	}
		2401
		2402	sub reset {
		2403	my ($self) = @_;
		2404
		2405	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2406
		2407	return if $self->players;
		2408
		2409	cf::trace "resetting map ", $self->path, "\n";
		2410
		2411	$self->in_memory (cf::MAP_SWAPPED);
		2412
		2413	# need to save uniques path
		2414	unless ($self->{deny_save}) {
		2415	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2416
		2417	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2418	if $uniq;
		2419	}
		2420
		2421	delete $cf::MAP{$self->path};
		2422
		2423	$self->deactivate;
		2424	$_->clear_links_to ($self) for values %cf::MAP;
		2425	$self->clear;
		2426
		2427	$self->unlink_save;
		2428	$self->destroy;
		2429	}
		2430
		2431	my $nuke_counter = "aaaa";
		2432
		2433	sub nuke {
		2434	my ($self) = @_;
		2435
		2436	{
		2437	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2438
		2439	delete $cf::MAP{$self->path};
		2440
		2441	$self->unlink_save;
		2442
		2443	bless $self, "cf::map::wrap";
		2444	delete $self->{deny_reset};
		2445	$self->{deny_save} = 1;
		2446	$self->reset_timeout (1);
		2447	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2448
		2449	$cf::MAP{$self->path} = $self;
		2450	}
		2451
		2452	$self->reset; # polite request, might not happen
		2453	}
		2454
		2455	=item $maps = cf::map::tmp_maps
		2456
		2457	Returns an arrayref with all map paths of currently instantiated and saved
		2458	maps. May block.
		2459
		2460	=cut
		2461
		2462	sub tmp_maps() {
		2463	[
		2464	map {
		2465	utf8::decode $_;
		2466	/\.map$/
		2467	? normalise $_
		2468	: ()
		2469	} @{ aio_readdir $TMPDIR or [] }
		2470	]
		2471	}
		2472
		2473	=item $maps = cf::map::random_maps
		2474
		2475	Returns an arrayref with all map paths of currently instantiated and saved
		2476	random maps. May block.
		2477
		2478	=cut
		2479
		2480	sub random_maps() {
		2481	[
		2482	map {
		2483	utf8::decode $_;
		2484	/\.map$/
		2485	? normalise "?random/$_"
		2486	: ()
		2487	} @{ aio_readdir $RANDOMDIR or [] }
		2488	]
		2489	}
		2490
		2491	=item cf::map::unique_maps
		2492
		2493	Returns an arrayref of paths of all shared maps that have
		2494	instantiated unique items. May block.
		2495
		2496	=cut
		2497
		2498	sub unique_maps() {
		2499	[
		2500	map {
		2501	utf8::decode $_;
		2502	s/\.map$//; # TODO future compatibility hack
		2503	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2504	? ()
		2505	: normalise $_
		2506	} @{ aio_readdir $UNIQUEDIR or [] }
		2507	]
		2508	}
		2509
		2510	=item cf::map::static_maps
		2511
		2512	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2513	file in the shared directory excluding F</styles> and F</editor>). May
		2514	block.
		2515
		2516	=cut
		2517
		2518	sub static_maps() {
		2519	my @dirs = "";
		2520	my @maps;
		2521
		2522	while (@dirs) {
		2523	my $dir = shift @dirs;
		2524
		2525	next if $dir eq "/styles" || $dir eq "/editor";
		2526
		2527	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2528	or return;
		2529
		2530	for (@$files) {
		2531	s/\.map$// or next;
		2532	utf8::decode $_;
		2533	push @maps, "$dir/$_";
		2534	}
		2535
		2536	push @dirs, map "$dir/$_", @$dirs;
		2537	}
		2538
		2539	\@maps
		2540	}
		2541
		2542	=back
		2543
		2544	=head3 cf::object
		2545
		2546	=cut
		2547
		2548	package cf::object;
		2549
		2550	=over 4
		2551
		2552	=item $ob->inv_recursive
		2553
		2554	Returns the inventory of the object I<and> their inventories, recursively,
		2555	but I<not> the object itself.
		2556
		2557	=cut
		2558
		2559	sub inv_recursive_;
		2560	sub inv_recursive_ {
		2561	map { $_, inv_recursive_ $_->inv } @_
		2562	}
		2563
		2564	sub inv_recursive {
		2565	inv_recursive_ inv $_[0]
		2566	}
		2567
		2568	=item $ref = $ob->ref
		2569
		2570	Creates and returns a persistent reference to an object that can be stored as a string.
		2571
		2572	=item $ob = cf::object::deref ($refstring)
		2573
		2574	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2575	even if the object actually exists. May block.
		2576
		2577	=cut
		2578
		2579	sub deref {
		2580	my ($ref) = @_;
		2581
		2582	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2583	my ($uuid, $name) = ($1, $2);
		2584	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2585	or return;
		2586	$pl->ob->uuid eq $uuid
		2587	or return;
		2588
		2589	$pl->ob
		2590	} else {
		2591	warn "$ref: cannot resolve object reference\n";
		2592	undef
		2593	}
		2594	}
		2595
		2596	package cf;
787		2597
788	=back	2598	=back
789		2599
790	=head3 cf::object::player	2600	=head3 cf::object::player
791		2601
…		…
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2606	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	2607	can be C<undef>. Does the right thing when the player is currently in a
798	dialogue with the given NPC character.	2608	dialogue with the given NPC character.
799		2609
800	=cut	2610	=cut
		2611
		2612	our $SAY_CHANNEL = {
		2613	id => "say",
		2614	title => "Map",
		2615	reply => "say ",
		2616	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2617	};
		2618
		2619	our $CHAT_CHANNEL = {
		2620	id => "chat",
		2621	title => "Chat",
		2622	reply => "chat ",
		2623	tooltip => "Player chat and shouts, global to the server.",
		2624	};
801		2625
802	# rough implementation of a future "reply" method that works	2626	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	2627	# with dialog boxes.
804	#TODO: the first argument must go, split into a $npc->reply_to ( method	2628	#TODO: the first argument must go, split into a $npc->reply_to ( method
805	sub cf::object::player::reply($$$;$) {	2629	sub cf::object::player::reply($$$;$) {
…		…
807		2631
808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2632	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
809		2633
810	if ($self->{record_replies}) {	2634	if ($self->{record_replies}) {
811	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2635	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2636
812	} else {	2637	} else {
		2638	my $pl = $self->contr;
		2639
		2640	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2641	my $dialog = $pl->{npc_dialog};
		2642	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2643
		2644	} else {
813	$msg = $npc->name . " says: $msg" if $npc;	2645	$msg = $npc->name . " says: $msg" if $npc;
814	$self->message ($msg, $flags);	2646	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2647	}
815	}	2648	}
		2649	}
		2650
		2651	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2652
		2653	=cut
		2654
		2655	sub cf::object::send_msg {
		2656	my $pl = shift->contr
		2657	or return;
		2658	$pl->send_msg (@_);
816	}	2659	}
817		2660
818	=item $player_object->may ("access")	2661	=item $player_object->may ("access")
819		2662
820	Returns wether the given player is authorized to access resource "access"	2663	Returns wether the given player is authorized to access resource "access"
…		…
829	(ref $cf::CFG{"may_$access"}	2672	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2673	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	2674	: $cf::CFG{"may_$access"})
832	}	2675	}
833		2676
		2677	=item $player_object->enter_link
		2678
		2679	Freezes the player and moves him/her to a special map (C<{link}>).
		2680
		2681	The player should be reasonably safe there for short amounts of time (e.g.
		2682	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2683	though, as the player cannot control the character while it is on the link
		2684	map.
		2685
		2686	Will never block.
		2687
		2688	=item $player_object->leave_link ($map, $x, $y)
		2689
		2690	Moves the player out of the special C<{link}> map onto the specified
		2691	map. If the map is not valid (or omitted), the player will be moved back
		2692	to the location he/she was before the call to C<enter_link>, or, if that
		2693	fails, to the emergency map position.
		2694
		2695	Might block.
		2696
		2697	=cut
		2698
		2699	sub link_map {
		2700	unless ($LINK_MAP) {
		2701	$LINK_MAP = cf::map::find "{link}"
		2702	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2703	$LINK_MAP->load;
		2704	}
		2705
		2706	$LINK_MAP
		2707	}
		2708
		2709	sub cf::object::player::enter_link {
		2710	my ($self) = @_;
		2711
		2712	$self->deactivate_recursive;
		2713
		2714	++$self->{_link_recursion};
		2715
		2716	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2717
		2718	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2719	if $self->map && $self->map->{path} ne "{link}";
		2720
		2721	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2722	}
		2723
		2724	sub cf::object::player::leave_link {
		2725	my ($self, $map, $x, $y) = @_;
		2726
		2727	return unless $self->contr->active;
		2728
		2729	my $link_pos = delete $self->{_link_pos};
		2730
		2731	unless ($map) {
		2732	# restore original map position
		2733	($map, $x, $y) = @{ $link_pos || [] };
		2734	$map = cf::map::find $map;
		2735
		2736	unless ($map) {
		2737	($map, $x, $y) = @$EMERGENCY_POSITION;
		2738	$map = cf::map::find $map
		2739	or die "FATAL: cannot load emergency map\n";
		2740	}
		2741	}
		2742
		2743	($x, $y) = (-1, -1)
		2744	unless (defined $x) && (defined $y);
		2745
		2746	# use -1 or undef as default coordinates, not 0, 0
		2747	($x, $y) = ($map->enter_x, $map->enter_y)
		2748	if $x <= 0 && $y <= 0;
		2749
		2750	$map->load;
		2751	$map->load_neighbours;
		2752
		2753	return unless $self->contr->active;
		2754
		2755	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2756	if ($self->enter_map ($map, $x, $y)) {
		2757	# entering was successful
		2758	delete $self->{_link_recursion};
		2759	# only activate afterwards, to support waiting in hooks
		2760	$self->activate_recursive;
		2761	}
		2762
		2763	}
		2764
		2765	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2766
		2767	Moves the player to the given map-path and coordinates by first freezing
		2768	her, loading and preparing them map, calling the provided $check callback
		2769	that has to return the map if sucecssful, and then unfreezes the player on
		2770	the new (success) or old (failed) map position. In either case, $done will
		2771	be called at the end of this process.
		2772
		2773	Note that $check will be called with a potentially non-loaded map, so if
		2774	it needs a loaded map it has to call C<< ->load >>.
		2775
		2776	=cut
		2777
		2778	our $GOTOGEN;
		2779
		2780	sub cf::object::player::goto {
		2781	my ($self, $path, $x, $y, $check, $done) = @_;
		2782
		2783	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2784	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2785	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2786	($path, $x, $y) = @$EMERGENCY_POSITION;
		2787	}
		2788
		2789	# do generation counting so two concurrent goto's will be executed in-order
		2790	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2791
		2792	$self->enter_link;
		2793
		2794	(async {
		2795	$Coro::current->{desc} = "player::goto $path $x $y";
		2796
		2797	# *tag paths override both path and x|y
		2798	if ($path =~ /^\*(.*)$/) {
		2799	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2800	my $ob = $obs[rand @obs];
		2801
		2802	# see if we actually can go there
		2803	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2804	$ob = $obs[rand @obs];
		2805	} else {
		2806	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2807	}
		2808	# else put us there anyways for now #d#
		2809
		2810	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2811	} else {
		2812	($path, $x, $y) = (undef, undef, undef);
		2813	}
		2814	}
		2815
		2816	my $map = eval {
		2817	my $map = defined $path ? cf::map::find $path : undef;
		2818
		2819	if ($map) {
		2820	$map = $map->customise_for ($self);
		2821	$map = $check->($map, $x, $y, $self) if $check && $map;
		2822	} else {
		2823	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2824	}
		2825
		2826	$map
		2827	};
		2828
		2829	if ($@) {
		2830	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2831	LOG llevError | logBacktrace, Carp::longmess $@;
		2832	}
		2833
		2834	if ($gen == $self->{_goto_generation}) {
		2835	delete $self->{_goto_generation};
		2836	$self->leave_link ($map, $x, $y);
		2837	}
		2838
		2839	$done->($self) if $done;
		2840	})->prio (1);
		2841	}
		2842
		2843	=item $player_object->enter_exit ($exit_object)
		2844
		2845	=cut
		2846
		2847	sub parse_random_map_params {
		2848	my ($spec) = @_;
		2849
		2850	my $rmp = { # defaults
		2851	xsize => (cf::rndm 15, 40),
		2852	ysize => (cf::rndm 15, 40),
		2853	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2854	#layout => string,
		2855	};
		2856
		2857	for (split /\n/, $spec) {
		2858	my ($k, $v) = split /\s+/, $_, 2;
		2859
		2860	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2861	}
		2862
		2863	$rmp
		2864	}
		2865
		2866	sub prepare_random_map {
		2867	my ($exit) = @_;
		2868
		2869	# all this does is basically replace the /! path by
		2870	# a new random map path (?random/...) with a seed
		2871	# that depends on the exit object
		2872
		2873	my $rmp = parse_random_map_params $exit->msg;
		2874
		2875	if ($exit->map) {
		2876	$rmp->{region} = $exit->region->name;
		2877	$rmp->{origin_map} = $exit->map->path;
		2878	$rmp->{origin_x} = $exit->x;
		2879	$rmp->{origin_y} = $exit->y;
		2880
		2881	$exit->map->touch;
		2882	}
		2883
		2884	$rmp->{random_seed} ||= $exit->random_seed;
		2885
		2886	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2887	my $md5 = Digest::MD5::md5_hex $data;
		2888	my $meta = "$RANDOMDIR/$md5.meta";
		2889
		2890	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2891	aio_write $fh, 0, (length $data), $data, 0;
		2892	undef $fh;
		2893	aio_rename "$meta~", $meta;
		2894
		2895	my $slaying = "?random/$md5";
		2896
		2897	if ($exit->valid) {
		2898	$exit->slaying ("?random/$md5");
		2899	$exit->msg (undef);
		2900	}
		2901	}
		2902	}
		2903
		2904	sub cf::object::player::enter_exit {
		2905	my ($self, $exit) = @_;
		2906
		2907	return unless $self->type == cf::PLAYER;
		2908
		2909	$self->enter_link;
		2910
		2911	(async {
		2912	$Coro::current->{desc} = "enter_exit";
		2913
		2914	unless (eval {
		2915	$self->deactivate_recursive; # just to be sure
		2916
		2917	# random map handling
		2918	{
		2919	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2920
		2921	prepare_random_map $exit
		2922	if $exit->slaying eq "/!";
		2923	}
		2924
		2925	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2926	my $x = $exit->stats->hp;
		2927	my $y = $exit->stats->sp;
		2928
		2929	$self->goto ($map, $x, $y);
		2930
		2931	# if exit is damned, update players death & WoR home-position
		2932	$self->contr->savebed ($map, $x, $y)
		2933	if $exit->flag (cf::FLAG_DAMNED);
		2934
		2935	1
		2936	}) {
		2937	$self->message ("Something went wrong deep within the deliantra server. "
		2938	. "I'll try to bring you back to the map you were before. "
		2939	. "Please report this to the dungeon master!",
		2940	cf::NDI_UNIQUE | cf::NDI_RED);
		2941
		2942	error "ERROR in enter_exit: $@";
		2943	$self->leave_link;
		2944	}
		2945	})->prio (1);
		2946	}
		2947
834	=head3 cf::client	2948	=head3 cf::client
835		2949
836	=over 4	2950	=over 4
837		2951
838	=item $client->send_drawinfo ($text, $flags)	2952	=item $client->send_drawinfo ($text, $flags)
…		…
844		2958
845	sub cf::client::send_drawinfo {	2959	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	2960	my ($self, $text, $flags) = @_;
847		2961
848	utf8::encode $text;	2962	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2963	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	2964	}
851		2965
		2966	=item $client->send_big_packet ($pkt)
		2967
		2968	Like C<send_packet>, but tries to compress large packets, and fragments
		2969	them as required.
		2970
		2971	=cut
		2972
		2973	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2974
		2975	sub cf::client::send_big_packet {
		2976	my ($self, $pkt) = @_;
		2977
		2978	# try lzf for large packets
		2979	$pkt = "lzf " . Compress::LZF::compress $pkt
		2980	if 1024 <= length $pkt and $self->{can_lzf};
		2981
		2982	# split very large packets
		2983	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2984	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2985	$pkt = "frag";
		2986	}
		2987
		2988	$self->send_packet ($pkt);
		2989	}
		2990
		2991	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2992
		2993	Send a drawinfo or msg packet to the client, formatting the msg for the
		2994	client if neccessary. C<$type> should be a string identifying the type of
		2995	the message, with C<log> being the default. If C<$color> is negative, suppress
		2996	the message unless the client supports the msg packet.
		2997
		2998	=cut
		2999
		3000	# non-persistent channels (usually the info channel)
		3001	our %CHANNEL = (
		3002	"c/motd" => {
		3003	id => "infobox",
		3004	title => "MOTD",
		3005	reply => undef,
		3006	tooltip => "The message of the day",
		3007	},
		3008	"c/identify" => {
		3009	id => "infobox",
		3010	title => "Identify",
		3011	reply => undef,
		3012	tooltip => "Items recently identified",
		3013	},
		3014	"c/examine" => {
		3015	id => "infobox",
		3016	title => "Examine",
		3017	reply => undef,
		3018	tooltip => "Signs and other items you examined",
		3019	},
		3020	"c/shopinfo" => {
		3021	id => "infobox",
		3022	title => "Shop Info",
		3023	reply => undef,
		3024	tooltip => "What your bargaining skill tells you about the shop",
		3025	},
		3026	"c/book" => {
		3027	id => "infobox",
		3028	title => "Book",
		3029	reply => undef,
		3030	tooltip => "The contents of a note or book",
		3031	},
		3032	"c/lookat" => {
		3033	id => "infobox",
		3034	title => "Look",
		3035	reply => undef,
		3036	tooltip => "What you saw there",
		3037	},
		3038	"c/who" => {
		3039	id => "infobox",
		3040	title => "Players",
		3041	reply => undef,
		3042	tooltip => "Shows players who are currently online",
		3043	},
		3044	"c/body" => {
		3045	id => "infobox",
		3046	title => "Body Parts",
		3047	reply => undef,
		3048	tooltip => "Shows which body parts you posess and are available",
		3049	},
		3050	"c/statistics" => {
		3051	id => "infobox",
		3052	title => "Statistics",
		3053	reply => undef,
		3054	tooltip => "Shows your primary statistics",
		3055	},
		3056	"c/skills" => {
		3057	id => "infobox",
		3058	title => "Skills",
		3059	reply => undef,
		3060	tooltip => "Shows your experience per skill and item power",
		3061	},
		3062	"c/shopitems" => {
		3063	id => "infobox",
		3064	title => "Shop Items",
		3065	reply => undef,
		3066	tooltip => "Shows the items currently for sale in this shop",
		3067	},
		3068	"c/resistances" => {
		3069	id => "infobox",
		3070	title => "Resistances",
		3071	reply => undef,
		3072	tooltip => "Shows your resistances",
		3073	},
		3074	"c/pets" => {
		3075	id => "infobox",
		3076	title => "Pets",
		3077	reply => undef,
		3078	tooltip => "Shows information abotu your pets/a specific pet",
		3079	},
		3080	"c/perceiveself" => {
		3081	id => "infobox",
		3082	title => "Perceive Self",
		3083	reply => undef,
		3084	tooltip => "You gained detailed knowledge about yourself",
		3085	},
		3086	"c/uptime" => {
		3087	id => "infobox",
		3088	title => "Uptime",
		3089	reply => undef,
		3090	tooltip => "How long the server has been running since last restart",
		3091	},
		3092	"c/mapinfo" => {
		3093	id => "infobox",
		3094	title => "Map Info",
		3095	reply => undef,
		3096	tooltip => "Information related to the maps",
		3097	},
		3098	"c/party" => {
		3099	id => "party",
		3100	title => "Party",
		3101	reply => "gsay ",
		3102	tooltip => "Messages and chat related to your party",
		3103	},
		3104	"c/death" => {
		3105	id => "death",
		3106	title => "Death",
		3107	reply => undef,
		3108	tooltip => "Reason for and more info about your most recent death",
		3109	},
		3110	"c/say" => $SAY_CHANNEL,
		3111	"c/chat" => $CHAT_CHANNEL,
		3112	);
		3113
		3114	sub cf::client::send_msg {
		3115	my ($self, $channel, $msg, $color, @extra) = @_;
		3116
		3117	$msg = $self->pl->expand_cfpod ($msg)
		3118	unless $color & cf::NDI_VERBATIM;
		3119
		3120	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3121
		3122	# check predefined channels, for the benefit of C
		3123	if ($CHANNEL{$channel}) {
		3124	$channel = $CHANNEL{$channel};
		3125
		3126	$self->ext_msg (channel_info => $channel);
		3127	$channel = $channel->{id};
		3128
		3129	} elsif (ref $channel) {
		3130	# send meta info to client, if not yet sent
		3131	unless (exists $self->{channel}{$channel->{id}}) {
		3132	$self->{channel}{$channel->{id}} = $channel;
		3133	$self->ext_msg (channel_info => $channel);
		3134	}
		3135
		3136	$channel = $channel->{id};
		3137	}
		3138
		3139	return unless @extra || length $msg;
		3140
		3141	# default colour, mask it out
		3142	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3143	if $color & cf::NDI_DEF;
		3144
		3145	my $pkt = "msg "
		3146	. $self->{json_coder}->encode (
		3147	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3148	);
		3149
		3150	$self->send_big_packet ($pkt);
		3151	}
		3152
		3153	=item $client->ext_msg ($type, @msg)
		3154
		3155	Sends an ext event to the client.
		3156
		3157	=cut
		3158
		3159	sub cf::client::ext_msg($$@) {
		3160	my ($self, $type, @msg) = @_;
		3161
		3162	if ($self->extcmd == 2) {
		3163	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3164	} elsif ($self->extcmd == 1) { # TODO: remove
		3165	push @msg, msgtype => "event_$type";
		3166	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3167	}
		3168	}
		3169
		3170	=item $client->ext_reply ($msgid, @msg)
		3171
		3172	Sends an ext reply to the client.
		3173
		3174	=cut
		3175
		3176	sub cf::client::ext_reply($$@) {
		3177	my ($self, $id, @msg) = @_;
		3178
		3179	if ($self->extcmd == 2) {
		3180	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3181	} elsif ($self->extcmd == 1) {
		3182	#TODO: version 1, remove
		3183	unshift @msg, msgtype => "reply", msgid => $id;
		3184	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3185	}
		3186	}
852		3187
853	=item $success = $client->query ($flags, "text", \&cb)	3188	=item $success = $client->query ($flags, "text", \&cb)
854		3189
855	Queues a query to the client, calling the given callback with	3190	Queues a query to the client, calling the given callback with
856	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	3191	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
857	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	3192	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
858		3193
859	Queries can fail, so check the return code. Or don't, as queries will become	3194	Queries can fail, so check the return code. Or don't, as queries will
860	reliable at some point in the future.	3195	become reliable at some point in the future.
861		3196
862	=cut	3197	=cut
863		3198
864	sub cf::client::query {	3199	sub cf::client::query {
865	my ($self, $flags, $text, $cb) = @_;	3200	my ($self, $flags, $text, $cb) = @_;
…		…
873	utf8::encode $text;	3208	utf8::encode $text;
874	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	3209	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
875		3210
876	$self->send_packet ($self->{query_queue}[0][0])	3211	$self->send_packet ($self->{query_queue}[0][0])
877	if @{ $self->{query_queue} } == 1;	3212	if @{ $self->{query_queue} } == 1;
		3213
		3214	1
878	}	3215	}
879		3216
880	cf::client->attach (	3217	cf::client->attach (
		3218	on_connect => sub {
		3219	my ($ns) = @_;
		3220
		3221	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3222	},
881	on_reply => sub {	3223	on_reply => sub {
882	my ($ns, $msg) = @_;	3224	my ($ns, $msg) = @_;
883		3225
884	# this weird shuffling is so that direct followup queries	3226	# this weird shuffling is so that direct followup queries
885	# get handled first	3227	# get handled first
886	my $queue = delete $ns->{query_queue};	3228	my $queue = delete $ns->{query_queue}
		3229	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		3230
888	(shift @$queue)->[1]->($msg);	3231	(shift @$queue)->[1]->($msg);
		3232	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		3233
890	push @{ $ns->{query_queue} }, @$queue;	3234	push @{ $ns->{query_queue} }, @$queue;
891		3235
892	if (@{ $ns->{query_queue} } == @$queue) {	3236	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	3237	if (@$queue) {
…		…
895	} else {	3239	} else {
896	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	3240	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
897	}	3241	}
898	}	3242	}
899	},	3243	},
		3244	on_exticmd => sub {
		3245	my ($ns, $buf) = @_;
		3246
		3247	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3248
		3249	if (ref $msg) {
		3250	my ($type, $reply, @payload) =
		3251	"ARRAY" eq ref $msg
		3252	? @$msg
		3253	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3254
		3255	my @reply;
		3256
		3257	if (my $cb = $EXTICMD{$type}) {
		3258	@reply = $cb->($ns, @payload);
		3259	}
		3260
		3261	$ns->ext_reply ($reply, @reply)
		3262	if $reply;
		3263
		3264	} else {
		3265	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3266	}
		3267
		3268	cf::override;
		3269	},
900	);	3270	);
901		3271
902	=item $client->coro (\&cb)	3272	=item $client->async (\&cb)
903		3273
904	Create a new coroutine, running the specified callback. The coroutine will	3274	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	3275	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	3276	or loss of connection).
907		3277
908	=cut	3278	=cut
909		3279
910	sub cf::client::coro {	3280	sub cf::client::async {
911	my ($self, $cb) = @_;	3281	my ($self, $cb) = @_;
912		3282
913	my $coro; $coro = async {	3283	my $coro = &Coro::async ($cb);
914	eval {	3284
915	$cb->();	3285	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	3286	delete $self->{_coro}{$coro+0};
919	};	3287	});
920		3288
921	$self->{_coro}{$coro+0} = $coro;	3289	$self->{_coro}{$coro+0} = $coro;
		3290
		3291	$coro
922	}	3292	}
923		3293
924	cf::client->attach (	3294	cf::client->attach (
925	on_destroy => sub {	3295	on_client_destroy => sub {
926	my ($ns) = @_;	3296	my ($ns) = @_;
927		3297
928	$_->cancel for values %{ (delete $ns->{_coro}) || {} };	3298	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
929	},	3299	},
930	);	3300	);
…		…
945	our $safe = new Safe "safe";	3315	our $safe = new Safe "safe";
946	our $safe_hole = new Safe::Hole;	3316	our $safe_hole = new Safe::Hole;
947		3317
948	$SIG{FPE} = 'IGNORE';	3318	$SIG{FPE} = 'IGNORE';
949		3319
950	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3320	$safe->permit_only (Opcode::opset qw(
		3321	:base_core :base_mem :base_orig :base_math :base_loop
		3322	grepstart grepwhile mapstart mapwhile
		3323	sort time
		3324	));
951		3325
952	# here we export the classes and methods available to script code	3326	# here we export the classes and methods available to script code
953		3327
954	=pod	3328	=pod
955		3329
956	The following fucntions and emthods are available within a safe environment:	3330	The following functions and methods are available within a safe environment:
957		3331
958	cf::object contr pay_amount pay_player map	3332	cf::object
		3333	contr pay_amount pay_player map x y force_find force_add destroy
		3334	insert remove name archname title slaying race decrease split
		3335	value
		3336
959	cf::object::player player	3337	cf::object::player
960	cf::player peaceful	3338	player
961	cf::map trigger	3339
		3340	cf::player
		3341	peaceful
		3342
		3343	cf::map
		3344	trigger
962		3345
963	=cut	3346	=cut
964		3347
965	for (	3348	for (
966	["cf::object" => qw(contr pay_amount pay_player map)],	3349	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3350	insert remove inv nrof name archname title slaying race
		3351	decrease split destroy change_exp value msg lore send_msg)],
967	["cf::object::player" => qw(player)],	3352	["cf::object::player" => qw(player)],
968	["cf::player" => qw(peaceful)],	3353	["cf::player" => qw(peaceful send_msg)],
969	["cf::map" => qw(trigger)],	3354	["cf::map" => qw(trigger)],
970	) {	3355	) {
971	no strict 'refs';
972	my ($pkg, @funs) = @$_;	3356	my ($pkg, @funs) = @$_;
973	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3357	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
974	for @funs;	3358	for @funs;
975	}	3359	}
976		3360
…		…
991		3375
992	my $qcode = $code;	3376	my $qcode = $code;
993	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3377	$qcode =~ s/"/‟/g; # not allowed in #line filenames
994	$qcode =~ s/\n/\\n/g;	3378	$qcode =~ s/\n/\\n/g;
995		3379
		3380	%vars = (_dummy => 0) unless %vars;
		3381
		3382	my @res;
996	local $_;	3383	local $_;
997	local @safe::cf::_safe_eval_args = values %vars;
998		3384
999	my $eval =	3385	my $eval =
1000	"do {\n"	3386	"do {\n"
1001	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3387	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
1002	. "#line 0 \"{$qcode}\"\n"	3388	. "#line 0 \"{$qcode}\"\n"
1003	. $code	3389	. $code
1004	. "\n}"	3390	. "\n}"
1005	;	3391	;
1006		3392
		3393	if ($CFG{safe_eval}) {
1007	sub_generation_inc;	3394	sub_generation_inc;
		3395	local @safe::cf::_safe_eval_args = values %vars;
1008	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3396	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
1009	sub_generation_inc;	3397	sub_generation_inc;
		3398	} else {
		3399	local @cf::_safe_eval_args = values %vars;
		3400	@res = wantarray ? eval eval : scalar eval $eval;
		3401	}
1010		3402
1011	if ($@) {	3403	if ($@) {
1012	warn "$@";	3404	warn "$@",
1013	warn "while executing safe code '$code'\n";	3405	"while executing safe code '$code'\n",
1014	warn "with arguments " . (join " ", %vars) . "\n";	3406	"with arguments " . (join " ", %vars) . "\n";
1015	}	3407	}
1016		3408
1017	wantarray ? @res : $res[0]	3409	wantarray ? @res : $res[0]
1018	}	3410	}
1019		3411
…		…
1033	=cut	3425	=cut
1034		3426
1035	sub register_script_function {	3427	sub register_script_function {
1036	my ($fun, $cb) = @_;	3428	my ($fun, $cb) = @_;
1037		3429
1038	no strict 'refs';	3430	$fun = "safe::$fun" if $CFG{safe_eval};
1039	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3431	*$fun = $safe_hole->wrap ($cb);
1040	}	3432	}
1041		3433
1042	=back	3434	=back
1043		3435
1044	=cut	3436	=cut
1045		3437
1046	#############################################################################	3438	#############################################################################
		3439	# the server's init and main functions
1047		3440
1048	=head2 EXTENSION DATABASE SUPPORT	3441	sub load_facedata($) {
		3442	my ($path) = @_;
1049		3443
1050	Crossfire maintains a very simple database for extension use. It can	3444	# HACK to clear player env face cache, we need some signal framework
1051	currently store anything that can be serialised using Storable, which	3445	# for this (global event?)
1052	excludes objects.	3446	%ext::player_env::MUSIC_FACE_CACHE = ();
1053		3447
1054	The parameter C<$family> should best start with the name of the extension	3448	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1055	using it, it should be unique.
1056		3449
1057	=over 4	3450	trace "loading facedata from $path\n";
1058		3451
1059	=item $hashref = cf::db_get $family	3452	my $facedata = decode_storable load_file $path;
1060		3453
1061	Return a hashref for use by the extension C<$family>, which can be	3454	$facedata->{version} == 2
1062	modified. After modifications, you have to call C<cf::db_dirty> or	3455	or cf::cleanup "$path: version mismatch, cannot proceed.";
1063	C<cf::db_sync>.
1064		3456
1065	=item $value = cf::db_get $family => $key	3457	# patch in the exptable
		3458	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3459	$facedata->{resource}{"res/exp_table"} = {
		3460	type => FT_RSRC,
		3461	data => $exp_table,
		3462	hash => (Digest::MD5::md5 $exp_table),
		3463	};
		3464	cf::cede_to_tick;
1066		3465
1067	Returns a single value from the database	3466	{
		3467	my $faces = $facedata->{faceinfo};
1068		3468
1069	=item cf::db_put $family => $hashref	3469	while (my ($face, $info) = each %$faces) {
		3470	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1070		3471
1071	Stores the given family hashref into the database. Updates are delayed, if	3472	cf::face::set_visibility $idx, $info->{visibility};
1072	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3473	cf::face::set_magicmap $idx, $info->{magicmap};
		3474	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3475	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3476	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
1073		3477
1074	=item cf::db_put $family => $key => $value	3478	cf::cede_to_tick;
		3479	}
1075		3480
1076	Stores the given C<$value> in the family hash. Updates are delayed, if you	3481	while (my ($face, $info) = each %$faces) {
1077	want the data to be synced to disk immediately, use C<cf::db_sync>.	3482	next unless $info->{smooth};
1078		3483
1079	=item cf::db_dirty	3484	my $idx = cf::face::find $face
		3485	or next;
1080		3486
1081	Marks the database as dirty, to be updated at a later time.	3487	if (my $smooth = cf::face::find $info->{smooth}) {
		3488	cf::face::set_smooth $idx, $smooth;
		3489	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3490	} else {
		3491	error "smooth face '$info->{smooth}' not found for face '$face'";
		3492	}
1082		3493
1083	=item cf::db_sync	3494	cf::cede_to_tick;
		3495	}
		3496	}
1084		3497
1085	Immediately write the database to disk I<if it is dirty>.	3498	{
		3499	my $anims = $facedata->{animinfo};
1086		3500
1087	=cut	3501	while (my ($anim, $info) = each %$anims) {
		3502	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3503	cf::cede_to_tick;
		3504	}
1088		3505
1089	our $DB;	3506	cf::anim::invalidate_all; # d'oh
		3507	}
		3508
		3509	{
		3510	my $res = $facedata->{resource};
		3511
		3512	while (my ($name, $info) = each %$res) {
		3513	if (defined $info->{type}) {
		3514	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3515
		3516	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3517	cf::face::set_type $idx, $info->{type};
		3518	} else {
		3519	$RESOURCE{$name} = $info; # unused
		3520	}
		3521
		3522	cf::cede_to_tick;
		3523	}
		3524	}
		3525
		3526	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3527
		3528	1
		3529	}
		3530
		3531	register_exticmd fx_want => sub {
		3532	my ($ns, $want) = @_;
		3533
		3534	while (my ($k, $v) = each %$want) {
		3535	$ns->fx_want ($k, $v);
		3536	}
		3537	};
		3538
		3539	sub load_resource_file($) {
		3540	my $guard = lock_acquire "load_resource_file";
		3541
		3542	my $status = load_resource_file_ $_[0];
		3543	get_slot 0.1, 100;
		3544	cf::arch::commit_load;
		3545
		3546	$status
		3547	}
		3548
		3549	sub reload_regions {
		3550	# HACK to clear player env face cache, we need some signal framework
		3551	# for this (global event?)
		3552	%ext::player_env::MUSIC_FACE_CACHE = ();
		3553
		3554	load_resource_file "$MAPDIR/regions"
		3555	or die "unable to load regions file\n";
		3556
		3557	for (cf::region::list) {
		3558	$_->{match} = qr/$_->{match}/
		3559	if exists $_->{match};
		3560	}
		3561	}
		3562
		3563	sub reload_facedata {
		3564	load_facedata "$DATADIR/facedata"
		3565	or die "unable to load facedata\n";
		3566	}
		3567
		3568	sub reload_archetypes {
		3569	load_resource_file "$DATADIR/archetypes"
		3570	or die "unable to load archetypes\n";
		3571	}
		3572
		3573	sub reload_treasures {
		3574	load_resource_file "$DATADIR/treasures"
		3575	or die "unable to load treasurelists\n";
		3576	}
		3577
		3578	sub reload_sound {
		3579	trace "loading sound config from $DATADIR/sound\n";
		3580
		3581	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3582
		3583	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3584	my $sound = $soundconf->{compat}[$_]
		3585	or next;
		3586
		3587	my $face = cf::face::find "sound/$sound->[1]";
		3588	cf::sound::set $sound->[0] => $face;
		3589	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3590	}
		3591
		3592	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3593	my $face = cf::face::find "sound/$v";
		3594	cf::sound::set $k => $face;
		3595	}
		3596	}
		3597
		3598	sub reload_resources {
		3599	trace "reloading resource files...\n";
		3600
		3601	reload_exp_table;
		3602	reload_materials;
		3603	reload_facedata;
		3604	reload_sound;
		3605	reload_archetypes;
		3606	reload_regions;
		3607	reload_treasures;
		3608
		3609	trace "finished reloading resource files\n";
		3610	}
		3611
		3612	sub reload_config {
		3613	trace "reloading config file...\n";
		3614
		3615	my $config = load_file "$CONFDIR/config";
		3616	utf8::decode $config;
		3617	*CFG = decode_yaml $config;
		3618
		3619	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3620
		3621	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3622	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3623
		3624	if (exists $CFG{mlockall}) {
		3625	eval {
		3626	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3627	and die "WARNING: m(un)lockall failed: $!\n";
		3628	};
		3629	warn $@ if $@;
		3630	}
		3631	}
		3632
		3633	sub pidfile() {
		3634	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3635	or die "$PIDFILE: $!";
		3636	flock $fh, &Fcntl::LOCK_EX
		3637	or die "$PIDFILE: flock: $!";
		3638	$fh
		3639	}
		3640
		3641	# make sure only one server instance is running at any one time
		3642	sub atomic {
		3643	my $fh = pidfile;
		3644
		3645	my $pid = <$fh>;
		3646	kill 9, $pid if $pid > 0;
		3647
		3648	seek $fh, 0, 0;
		3649	print $fh $$;
		3650	}
		3651
		3652	sub main_loop {
		3653	trace "EV::loop starting\n";
		3654	if (1) {
		3655	EV::loop;
		3656	}
		3657	trace "EV::loop returned\n";
		3658	goto &main_loop unless $REALLY_UNLOOP;
		3659	}
		3660
		3661	sub main {
		3662	cf::init_globals; # initialise logging
		3663
		3664	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3665	LOG llevInfo, "Copyright (C) 2005-2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3666	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3667	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3668
		3669	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3670
		3671	# we must not ever block the main coroutine
		3672	local $Coro::idle = sub {
		3673	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3674	(async {
		3675	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3676	EV::loop EV::LOOP_ONESHOT;
		3677	})->prio (Coro::PRIO_MAX);
		3678	};
		3679
		3680	evthread_start IO::AIO::poll_fileno;
		3681
		3682	cf::sync_job {
		3683	cf::incloader::init ();
		3684
		3685	cf::init_anim;
		3686	cf::init_attackmess;
		3687	cf::init_dynamic;
		3688
		3689	cf::load_settings;
		3690
		3691	reload_resources;
		3692	reload_config;
		3693	db_init;
		3694
		3695	cf::init_uuid;
		3696	cf::init_signals;
		3697	cf::init_skills;
		3698
		3699	cf::init_beforeplay;
		3700
		3701	atomic;
		3702
		3703	load_extensions;
		3704
		3705	utime time, time, $RUNTIMEFILE;
		3706
		3707	# no (long-running) fork's whatsoever before this point(!)
		3708	use POSIX ();
		3709	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3710
		3711	cf::_post_init 0;
		3712	};
		3713
		3714	cf::object::thawer::errors_are_fatal 0;
		3715	info "parse errors in files are no longer fatal from this point on.\n";
		3716
		3717	my $free_main; $free_main = EV::idle sub {
		3718	undef $free_main;
		3719	undef &main; # free gobs of memory :)
		3720	};
		3721
		3722	goto &main_loop;
		3723	}
		3724
		3725	#############################################################################
		3726	# initialisation and cleanup
		3727
		3728	# install some emergency cleanup handlers
		3729	BEGIN {
		3730	our %SIGWATCHER = ();
		3731	for my $signal (qw(INT HUP TERM)) {
		3732	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3733	cf::cleanup "SIG$signal";
		3734	};
		3735	}
		3736	}
		3737
		3738	sub write_runtime_sync {
		3739	my $t0 = AE::time;
		3740
		3741	# first touch the runtime file to show we are still running:
		3742	# the fsync below can take a very very long time.
		3743
		3744	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3745
		3746	my $guard = cf::lock_acquire "write_runtime";
		3747
		3748	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3749	or return;
		3750
		3751	my $value = $cf::RUNTIME + 90 + 10;
		3752	# 10 is the runtime save interval, for a monotonic clock
		3753	# 60 allows for the watchdog to kill the server.
		3754
		3755	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3756	and return;
		3757
		3758	# always fsync - this file is important
		3759	aio_fsync $fh
		3760	and return;
		3761
		3762	# touch it again to show we are up-to-date
		3763	aio_utime $fh, undef, undef;
		3764
		3765	close $fh
		3766	or return;
		3767
		3768	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3769	and return;
		3770
		3771	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3772
		3773	1
		3774	}
		3775
		3776	our $uuid_lock;
		3777	our $uuid_skip;
		3778
		3779	sub write_uuid_sync($) {
		3780	$uuid_skip ||= $_[0];
		3781
		3782	return if $uuid_lock;
		3783	local $uuid_lock = 1;
		3784
		3785	my $uuid = "$LOCALDIR/uuid";
		3786
		3787	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3788	or return;
		3789
		3790	my $value = uuid_seq uuid_cur;
		3791
		3792	unless ($value) {
		3793	info "cowardly refusing to write zero uuid value!\n";
		3794	return;
		3795	}
		3796
		3797	my $value = uuid_str $value + $uuid_skip;
		3798	$uuid_skip = 0;
		3799
		3800	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3801	and return;
		3802
		3803	# always fsync - this file is important
		3804	aio_fsync $fh
		3805	and return;
		3806
		3807	close $fh
		3808	or return;
		3809
		3810	aio_rename "$uuid~", $uuid
		3811	and return;
		3812
		3813	trace "uuid file written ($value).\n";
		3814
		3815	1
		3816
		3817	}
		3818
		3819	sub write_uuid($$) {
		3820	my ($skip, $sync) = @_;
		3821
		3822	$sync ? write_uuid_sync $skip
		3823	: async { write_uuid_sync $skip };
		3824	}
		3825
		3826	sub emergency_save() {
		3827	my $freeze_guard = cf::freeze_mainloop;
		3828
		3829	info "emergency_perl_save: enter\n";
		3830
		3831	# this is a trade-off: we want to be very quick here, so
		3832	# save all maps without fsync, and later call a global sync
		3833	# (which in turn might be very very slow)
		3834	local $USE_FSYNC = 0;
		3835
		3836	cf::sync_job {
		3837	cf::write_runtime_sync; # external watchdog should not bark
		3838
		3839	# use a peculiar iteration method to avoid tripping on perl
		3840	# refcount bugs in for. also avoids problems with players
		3841	# and maps saved/destroyed asynchronously.
		3842	info "emergency_perl_save: begin player save\n";
		3843	for my $login (keys %cf::PLAYER) {
		3844	my $pl = $cf::PLAYER{$login} or next;
		3845	$pl->valid or next;
		3846	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3847	$pl->save;
		3848	}
		3849	info "emergency_perl_save: end player save\n";
		3850
		3851	cf::write_runtime_sync; # external watchdog should not bark
		3852
		3853	info "emergency_perl_save: begin map save\n";
		3854	for my $path (keys %cf::MAP) {
		3855	my $map = $cf::MAP{$path} or next;
		3856	$map->valid or next;
		3857	$map->save;
		3858	}
		3859	info "emergency_perl_save: end map save\n";
		3860
		3861	cf::write_runtime_sync; # external watchdog should not bark
		3862
		3863	info "emergency_perl_save: begin database checkpoint\n";
		3864	BDB::db_env_txn_checkpoint $DB_ENV;
		3865	info "emergency_perl_save: end database checkpoint\n";
		3866
		3867	info "emergency_perl_save: begin write uuid\n";
		3868	write_uuid_sync 1;
		3869	info "emergency_perl_save: end write uuid\n";
		3870
		3871	cf::write_runtime_sync; # external watchdog should not bark
		3872
		3873	trace "emergency_perl_save: syncing database to disk";
		3874	BDB::db_env_txn_checkpoint $DB_ENV;
		3875
		3876	info "emergency_perl_save: starting sync\n";
		3877	IO::AIO::aio_sync sub {
		3878	info "emergency_perl_save: finished sync\n";
		3879	};
		3880
		3881	cf::write_runtime_sync; # external watchdog should not bark
		3882
		3883	trace "emergency_perl_save: flushing outstanding aio requests";
		3884	while (IO::AIO::nreqs || BDB::nreqs) {
		3885	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3886	}
		3887
		3888	cf::write_runtime_sync; # external watchdog should not bark
		3889	};
		3890
		3891	info "emergency_perl_save: leave\n";
		3892	}
		3893
		3894	sub post_cleanup {
		3895	my ($make_core) = @_;
		3896
		3897	IO::AIO::flush;
		3898
		3899	error Carp::longmess "post_cleanup backtrace"
		3900	if $make_core;
		3901
		3902	my $fh = pidfile;
		3903	unlink $PIDFILE if <$fh> == $$;
		3904	}
		3905
		3906	# a safer delete_package, copied from Symbol
		3907	sub clear_package($) {
		3908	my $pkg = shift;
		3909
		3910	# expand to full symbol table name if needed
		3911	unless ($pkg =~ /^main::.*::$/) {
		3912	$pkg = "main$pkg" if $pkg =~ /^::/;
		3913	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3914	$pkg .= '::' unless $pkg =~ /::$/;
		3915	}
		3916
		3917	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3918	my $stem_symtab = *{$stem}{HASH};
		3919
		3920	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3921	or return;
		3922
		3923	# clear all symbols
		3924	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3925	for my $name (keys %$leaf_symtab) {
		3926	_gv_clear *{"$pkg$name"};
		3927	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3928	}
		3929	}
		3930
		3931	sub do_reload_perl() {
		3932	# can/must only be called in main
		3933	unless (in_main) {
		3934	error "can only reload from main coroutine";
		3935	return;
		3936	}
		3937
		3938	return if $RELOAD++;
		3939
		3940	my $t1 = AE::time;
		3941
		3942	while ($RELOAD) {
		3943	cf::get_slot 0.1, -1, "reload_perl";
		3944	info "perl_reload: reloading...";
		3945
		3946	trace "perl_reload: entering sync_job";
		3947
		3948	cf::sync_job {
		3949	#cf::emergency_save;
		3950
		3951	trace "perl_reload: cancelling all extension coros";
		3952	$_->cancel for values %EXT_CORO;
		3953	%EXT_CORO = ();
		3954
		3955	trace "perl_reload: removing commands";
		3956	%COMMAND = ();
		3957
		3958	trace "perl_reload: removing ext/exti commands";
		3959	%EXTCMD = ();
		3960	%EXTICMD = ();
		3961
		3962	trace "perl_reload: unloading/nuking all extensions";
		3963	for my $pkg (@EXTS) {
		3964	trace "... unloading $pkg";
		3965
		3966	if (my $cb = $pkg->can ("unload")) {
		3967	eval {
		3968	$cb->($pkg);
		3969	1
		3970	} or error "$pkg unloaded, but with errors: $@";
		3971	}
		3972
		3973	trace "... clearing $pkg";
		3974	clear_package $pkg;
		3975	}
		3976
		3977	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3978	while (my ($k, $v) = each %INC) {
		3979	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3980
		3981	trace "... unloading $k";
		3982	delete $INC{$k};
		3983
		3984	$k =~ s/\.pm$//;
		3985	$k =~ s/\//::/g;
		3986
		3987	if (my $cb = $k->can ("unload_module")) {
		3988	$cb->();
		3989	}
		3990
		3991	clear_package $k;
		3992	}
		3993
		3994	trace "perl_reload: getting rid of safe::, as good as possible";
		3995	clear_package "safe::$_"
		3996	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3997
		3998	trace "perl_reload: unloading cf.pm \"a bit\"";
		3999	delete $INC{"cf.pm"};
		4000	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4001
		4002	# don't, removes xs symbols, too,
		4003	# and global variables created in xs
		4004	#clear_package __PACKAGE__;
		4005
		4006	info "perl_reload: unload completed, starting to reload now";
		4007
		4008	trace "perl_reload: reloading cf.pm";
		4009	require cf;
		4010	cf::_connect_to_perl_1;
		4011
		4012	trace "perl_reload: loading config and database again";
		4013	cf::reload_config;
		4014
		4015	trace "perl_reload: loading extensions";
		4016	cf::load_extensions;
		4017
		4018	if ($REATTACH_ON_RELOAD) {
		4019	trace "perl_reload: reattaching attachments to objects/players";
		4020	_global_reattach; # objects, sockets
		4021	trace "perl_reload: reattaching attachments to maps";
		4022	reattach $_ for values %MAP;
		4023	trace "perl_reload: reattaching attachments to players";
		4024	reattach $_ for values %PLAYER;
		4025	}
		4026
		4027	cf::_post_init 1;
		4028
		4029	trace "perl_reload: leaving sync_job";
		4030
		4031	1
		4032	} or do {
		4033	error $@;
		4034	cf::cleanup "perl_reload: error, exiting.";
		4035	};
		4036
		4037	--$RELOAD;
		4038	}
		4039
		4040	$t1 = AE::time - $t1;
		4041	info "perl_reload: completed in ${t1}s\n";
		4042	};
		4043
		4044	our $RELOAD_WATCHER; # used only during reload
		4045
		4046	sub reload_perl() {
		4047	# doing reload synchronously and two reloads happen back-to-back,
		4048	# coro crashes during coro_state_free->destroy here.
		4049
		4050	$RELOAD_WATCHER ||= cf::async {
		4051	Coro::AIO::aio_wait cache_extensions;
		4052
		4053	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4054	do_reload_perl;
		4055	undef $RELOAD_WATCHER;
		4056	};
		4057	};
		4058	}
		4059
		4060	register_command "reload" => sub {
		4061	my ($who, $arg) = @_;
		4062
		4063	if ($who->flag (FLAG_WIZ)) {
		4064	$who->message ("reloading server.");
		4065	async {
		4066	$Coro::current->{desc} = "perl_reload";
		4067	reload_perl;
		4068	};
		4069	}
		4070	};
		4071
		4072	#############################################################################
		4073
		4074	my $bug_warning = 0;
		4075
		4076	our @WAIT_FOR_TICK;
		4077	our @WAIT_FOR_TICK_BEGIN;
		4078
		4079	sub wait_for_tick() {
		4080	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4081
		4082	my $signal = new Coro::Signal;
		4083	push @WAIT_FOR_TICK, $signal;
		4084	$signal->wait;
		4085	}
		4086
		4087	sub wait_for_tick_begin() {
		4088	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4089
		4090	my $signal = new Coro::Signal;
		4091	push @WAIT_FOR_TICK_BEGIN, $signal;
		4092	$signal->wait;
		4093	}
		4094
		4095	sub tick {
		4096	if ($Coro::current != $Coro::main) {
		4097	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4098	unless ++$bug_warning > 10;
		4099	return;
		4100	}
		4101
		4102	cf::server_tick; # one server iteration
		4103
		4104	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4105
		4106	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4107	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4108	Coro::async_pool {
		4109	$Coro::current->{desc} = "runtime saver";
		4110	write_runtime_sync
		4111	or error "ERROR: unable to write runtime file: $!";
		4112	};
		4113	}
		4114
		4115	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4116	$sig->send;
		4117	}
		4118	while (my $sig = shift @WAIT_FOR_TICK) {
		4119	$sig->send;
		4120	}
		4121
		4122	$LOAD = ($NOW - $TICK_START) / $TICK;
		4123	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4124
		4125	if (0) {
		4126	if ($NEXT_TICK) {
		4127	my $jitter = $TICK_START - $NEXT_TICK;
		4128	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4129	debug "jitter $JITTER\n";#d#
		4130	}
		4131	}
		4132	}
1090		4133
1091	{	4134	{
1092	my $path = cf::localdir . "/database.pst";	4135	# configure BDB
1093		4136
1094	sub db_load() {	4137	BDB::min_parallel 16;
1095	warn "loading database $path\n";#d# remove later	4138	BDB::max_poll_reqs $TICK * 0.1;
1096	$DB = stat $path ? Storable::retrieve $path : { };	4139	$AnyEvent::BDB::WATCHER->priority (1);
1097	}
1098		4140
1099	my $pid;	4141	unless ($DB_ENV) {
		4142	$DB_ENV = BDB::db_env_create;
		4143	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4144	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4145	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4146	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4147	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1100		4148
1101	sub db_save() {	4149	cf::sync_job {
1102	warn "saving database $path\n";#d# remove later
1103	waitpid $pid, 0 if $pid;
1104	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;
1108	cf::_exit 0 if defined $pid;
1109	}
1110	}
1111
1112	my $dirty;
1113
1114	sub db_sync() {
1115	db_save if $dirty;
1116	undef $dirty;
1117	}
1118
1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1120	db_sync;
1121	});
1122
1123	sub db_dirty() {
1124	$dirty = 1;
1125	$idle->start;
1126	}
1127
1128	sub db_get($;$) {
1129	@_ >= 2
1130	? $DB->{$_[0]}{$_[1]}
1131	: ($DB->{$_[0]} ||= { })
1132	}
1133
1134	sub db_put($$;$) {
1135	if (@_ >= 3) {
1136	$DB->{$_[0]}{$_[1]} = $_[2];
1137	} else {	4150	eval {
1138	$DB->{$_[0]} = $_[1];	4151	BDB::db_env_open
1139	}	4152	$DB_ENV,
1140	db_dirty;	4153	$BDBDIR,
1141	}	4154	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4155	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4156	0666;
1142		4157
1143	cf::global->attach (	4158	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1144	prio => 10000,
1145	on_cleanup => sub {
1146	db_sync;
1147	},
1148	);
1149	}
1150
1151	#############################################################################
1152	# the server's main()
1153
1154	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"
1156	or return;
1157
1158	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;
1160	}
1161
1162	sub main {
1163	cfg_load;
1164	db_load;
1165	load_extensions;
1166	Event::loop;
1167	}
1168
1169	#############################################################################
1170	# initialisation
1171
1172	sub _perl_reload(&) {
1173	my ($msg) = @_;
1174
1175	$msg->("reloading...");
1176
1177	eval {
1178	# cancel all watchers
1179	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}
1182
1183	# unload all extensions
1184	for (@exts) {
1185	$msg->("unloading <$_>");
1186	unload_extension $_;
1187	}
1188
1189	# unload all modules loaded from $LIBDIR
1190	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192
1193	$msg->("removing <$k>");
1194	delete $INC{$k};
1195
1196	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;
1198
1199	if (my $cb = $k->can ("unload_module")) {
1200	$cb->();
1201	}	4159	};
1202		4160
1203	Symbol::delete_package $k;	4161	cf::cleanup "db_env_open(db): $@" if $@;
1204	}	4162	};
		4163	}
1205		4164
1206	# sync database to disk	4165	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1207	cf::db_sync;	4166	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1208
1209	# get rid of safe::, as good as possible
1210	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1212
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"
1217	delete $INC{"cf.pm"};
1218
1219	# don't, removes xs symbols, too,
1220	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;
1222
1223	# reload cf.pm
1224	$msg->("reloading cf.pm");
1225	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227
1228	# load config and database again
1229	cf::cfg_load;
1230	cf::db_load;
1231
1232	# load extensions
1233	$msg->("load extensions");
1234	cf::load_extensions;
1235
1236	# reattach attachments to objects
1237	$msg->("reattach");
1238	_global_reattach;
1239	};	4167	};
1240	$msg->($@) if $@;	4168	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1241		4169	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1242	$msg->("reloaded");
1243	};
1244
1245	sub perl_reload() {
1246	_perl_reload {
1247	warn $_[0];
1248	print "$_[0]\n";
1249	};	4170	};
		4171	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4172	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4173	};
1250	}	4174	}
1251		4175
1252	register "<global>", __PACKAGE__;	4176	{
		4177	# configure IO::AIO
1253		4178
1254	register_command "perl-reload" => sub {	4179	IO::AIO::min_parallel 8;
		4180	IO::AIO::max_poll_time $TICK * 0.1;
		4181	undef $AnyEvent::AIO::WATCHER;
		4182	}
		4183
		4184	our $_log_backtrace;
		4185	our $_log_backtrace_last;
		4186
		4187	sub _log_backtrace {
1255	my ($who, $arg) = @_;	4188	my ($msg, @addr) = @_;
1256		4189
1257	if ($who->flag (FLAG_WIZ)) {	4190	$msg =~ s/\n$//;
1258	_perl_reload {	4191
1259	warn $_[0];	4192	if ($_log_backtrace_last eq $msg) {
1260	$who->message ($_[0]);	4193	LOG llevInfo, "[ABT] $msg\n";
		4194	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4195	# limit the # of concurrent backtraces
		4196	} elsif ($_log_backtrace < 2) {
		4197	$_log_backtrace_last = $msg;
		4198	++$_log_backtrace;
		4199	my $perl_bt = Carp::longmess $msg;
		4200	async {
		4201	$Coro::current->{desc} = "abt $msg";
		4202
		4203	my @bt = fork_call {
		4204	@addr = map { sprintf "%x", $_ } @addr;
		4205	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4206	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4207	or die "addr2line: $!";
		4208
		4209	my @funcs;
		4210	my @res = <$fh>;
		4211	chomp for @res;
		4212	while (@res) {
		4213	my ($func, $line) = splice @res, 0, 2, ();
		4214	push @funcs, "[$func] $line";
		4215	}
		4216
		4217	@funcs
		4218	};
		4219
		4220	LOG llevInfo, "[ABT] $perl_bt\n";
		4221	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4222	LOG llevInfo, "[ABT] $_\n" for @bt;
		4223	--$_log_backtrace;
1261	};	4224	};
1262	}	4225	} else {
1263	};	4226	LOG llevInfo, "[ABT] $msg\n";
1264		4227	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1265	unshift @INC, $LIBDIR;
1266
1267	$TICK_WATCHER = Event->timer (
1268	prio => 0,
1269	at => $NEXT_TICK || 1,
1270	data => WF_AUTOCANCEL,
1271	cb => sub {
1272	cf::server_tick; # one server iteration
1273
1274	my $NOW = Event::time;
1275	$NEXT_TICK += $TICK;
1276
1277	# if we are delayed by four ticks or more, skip them all
1278	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1279
1280	$TICK_WATCHER->at ($NEXT_TICK);
1281	$TICK_WATCHER->start;
1282	},	4228	}
1283	);	4229	}
1284		4230
1285	IO::AIO::max_poll_time $TICK * 0.2;	4231	# load additional modules
		4232	require "cf/$_.pm" for @EXTRA_MODULES;
		4233	cf::_connect_to_perl_2;
1286		4234
1287	Event->io (fd => IO::AIO::poll_fileno,	4235	END { cf::emergency_save }
1288	poll => 'r',
1289	prio => 5,
1290	data => WF_AUTOCANCEL,
1291	cb => \&IO::AIO::poll_cb);
1292		4236
1293	1	4237	1
1294		4238

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