ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.94 by root, Thu Dec 21 23:02:54 2006 UTC vs.
Revision 1.477 by root, Wed Sep 2 22:52:36 2009 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify
		7	# it under the terms of the GNU General Public License as published by
		8	# the Free Software Foundation, either version 3 of the License, or
		9	# (at your 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 GNU General Public License
		17	# along with this program. If not, see <http://www.gnu.org/licenses/>.
		18	#
		19	# The authors can be reached via e-mail to <support@deliantra.net>
		20	#
		21
1	package cf;	22	package cf;
		23
		24	use 5.10.0;
		25	use utf8;
		26	use strict qw(vars subs);
2		27
3	use Symbol;	28	use Symbol;
4	use List::Util;	29	use List::Util;
5	use Storable;	30	use Socket;
		31	use EV;
6	use Opcode;	32	use Opcode;
7	use Safe;	33	use Safe;
8	use Safe::Hole;	34	use Safe::Hole;
		35	use Storable ();
9		36
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Digest::MD5;
		57	use Fcntl;
		58	use YAML ();
10	use IO::AIO ();	59	use IO::AIO ();
11	use YAML::Syck ();
12	use Time::HiRes;	60	use Time::HiRes;
13	use Event;	61	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	62	use Digest::MD5 ();
15		63
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	64	AnyEvent::detect;
17	$YAML::Syck::ImplicitUnicode = 1;
18		65
19	use strict;	66	# configure various modules to our taste
		67	#
		68	$Storable::canonical = 1; # reduce rsync transfers
		69	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		70
		71	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		72
		73	# make sure c-lzf reinitialises itself
		74	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		75	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		76
		77	# strictly for debugging
		78	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
20		79
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	80	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		81
23	our %COMMAND = ();	82	our %COMMAND = ();
24	our %COMMAND_TIME = ();	83	our %COMMAND_TIME = ();
		84
		85	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	86	our %EXTCMD = ();
		87	our %EXTICMD = ();
		88	our %EXT_CORO = (); # coroutines bound to extensions
		89	our %EXT_MAP = (); # pluggable maps
26		90
27	_init_vars;	91	our $RELOAD; # number of reloads so far, non-zero while in reload
28
29	our @EVENT;	92	our @EVENT;
30	our $LIBDIR = datadir . "/ext";
31		93
32	our $TICK = MAX_TIME * 1e-6;	94	our $CONFDIR = confdir;
33	our $TICK_WATCHER;	95	our $DATADIR = datadir;
		96	our $LIBDIR = "$DATADIR/ext";
		97	our $PODDIR = "$DATADIR/pod";
		98	our $MAPDIR = "$DATADIR/" . mapdir;
		99	our $LOCALDIR = localdir;
		100	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		101	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		102	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		103	our $RANDOMDIR = "$LOCALDIR/random";
		104	our $BDBDIR = "$LOCALDIR/db";
		105	our $PIDFILE = "$LOCALDIR/pid";
		106	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		107
		108	our %RESOURCE;
		109
		110	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		111	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	112	our $NEXT_TICK;
		113	our $USE_FSYNC = 1; # use fsync to write maps - default on
		114
		115	our $BDB_DEADLOCK_WATCHER;
		116	our $BDB_CHECKPOINT_WATCHER;
		117	our $BDB_TRICKLE_WATCHER;
		118	our $DB_ENV;
		119
		120	our @EXTRA_MODULES = qw(pod mapscript);
35		121
36	our %CFG;	122	our %CFG;
37		123
38	our $UPTIME; $UPTIME ||= time;	124	our $UPTIME; $UPTIME ||= time;
		125	our $RUNTIME;
		126	our $NOW;
		127
		128	our (%PLAYER, %PLAYER_LOADING); # all users
		129	our (%MAP, %MAP_LOADING ); # all maps
		130	our $LINK_MAP; # the special {link} map, which is always available
		131
		132	# used to convert map paths into valid unix filenames by replacing / by ∕
		133	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		134
		135	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		136	our $LOADAVG; # same thing, but with alpha-smoothing
		137	our $JITTER; # average jitter
		138	our $TICK_START; # for load detecting purposes
		139
		140	our @POST_INIT;
		141
		142	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		143	our $REALLY_UNLOOP; # never set to true, please :)
		144
		145	binmode STDOUT;
		146	binmode STDERR;
		147
		148	# read virtual server time, if available
		149	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		150	open my $fh, "<", $RUNTIMEFILE
		151	or die "unable to read $RUNTIMEFILE file: $!";
		152	$RUNTIME = <$fh> + 0.;
		153	}
		154
		155	eval "sub TICK() { $TICK } 1" or die;
		156
		157	mkdir $_
		158	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		159
		160	our $EMERGENCY_POSITION;
		161
		162	sub cf::map::normalise;
39		163
40	#############################################################################	164	#############################################################################
41		165
42	=head2 GLOBAL VARIABLES	166	=head2 GLOBAL VARIABLES
43		167
…		…
45		169
46	=item $cf::UPTIME	170	=item $cf::UPTIME
47		171
48	The timestamp of the server start (so not actually an uptime).	172	The timestamp of the server start (so not actually an uptime).
49		173
50	=item $cf::LIBDIR	174	=item $cf::RUNTIME
51		175
52	The perl library directory, where extensions and cf-specific modules can	176	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	177	every server tick.
		178
		179	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		180	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		181	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		182
		183	Various directories - "/etc", read-only install directory, perl-library
		184	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		185	unique-items directory, player file directory, random maps directory and
		186	database environment.
		187
		188	=item $cf::NOW
		189
		190	The time of the last (current) server tick.
54		191
55	=item $cf::TICK	192	=item $cf::TICK
56		193
57	The interval between server ticks, in seconds.	194	The interval between server ticks, in seconds.
58		195
		196	=item $cf::LOADAVG
		197
		198	The current CPU load on the server (alpha-smoothed), as a value between 0
		199	(none) and 1 (overloaded), indicating how much time is spent on processing
		200	objects per tick. Healthy values are < 0.5.
		201
		202	=item $cf::LOAD
		203
		204	The raw value load value from the last tick.
		205
59	=item %cf::CFG	206	=item %cf::CFG
60		207
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	208	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
62	from wherever your confdir points to.	209	from wherever your confdir points to.
63		210
		211	=item cf::wait_for_tick, cf::wait_for_tick_begin
		212
		213	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		214	returns directly I<after> the tick processing (and consequently, can only wake one process
		215	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		216
		217	=item @cf::INVOKE_RESULTS
		218
		219	This array contains the results of the last C<invoke ()> call. When
		220	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		221	that call.
		222
64	=back	223	=back
65		224
66	=cut	225	=cut
67		226
68	BEGIN {	227	$Coro::State::WARNHOOK = sub {
69	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	228	my $msg = join "", @_;
		229
71	$msg .= "\n"	230	$msg .= "\n"
72	unless $msg =~ /\n$/;	231	unless $msg =~ /\n$/;
73		232
74	print STDERR "cfperl: $msg";	233	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		234
75	LOG llevError, "cfperl: $msg";	235	LOG llevError, $msg;
76	};	236	};
77	}	237
		238	$Coro::State::DIEHOOK = sub {
		239	return unless $^S eq 0; # "eq", not "=="
		240
		241	warn Carp::longmess $_[0];
		242
		243	if ($Coro::current == $Coro::main) {#d#
		244	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		245	return;#d#
		246	}#d#
		247
		248	# kill coroutine otherwise
		249	Coro::terminate
		250	};
78		251
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	252	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	253	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	254	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	255	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	256	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		257	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	258	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
85		259
86	# we bless all objects into (empty) derived classes to force a method lookup	260	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	261	# within the Safe compartment.
88	for my $pkg (qw(	262	for my $pkg (qw(
89	cf::global	263	cf::global cf::attachable
90	cf::object cf::object::player	264	cf::object cf::object::player
91	cf::client cf::player	265	cf::client cf::player
92	cf::arch cf::living	266	cf::arch cf::living
		267	cf::map cf::mapspace
93	cf::map cf::party cf::region	268	cf::party cf::region
94	)) {	269	)) {
95	no strict 'refs';
96	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	270	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
97	}	271	}
98		272
99	$Event::DIED = sub {	273	$EV::DIED = sub {
100	warn "error in event callback: @_";	274	warn "error in event callback: @_";
101	};	275	};
102		276
103	my %ext_pkg;	277	#############################################################################
104	my @exts;
105	my @hook;
106		278
107	=head2 UTILITY FUNCTIONS	279	=head2 UTILITY FUNCTIONS
108		280
109	=over 4	281	=over 4
110		282
111	=cut	283	=item dumpval $ref
112		284
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	285	=cut
114		286
		287	sub dumpval {
		288	eval {
		289	local $SIG{__DIE__};
		290	my $d;
		291	if (1) {
		292	$d = new Data::Dumper([$_[0]], ["*var"]);
		293	$d->Terse(1);
		294	$d->Indent(2);
		295	$d->Quotekeys(0);
		296	$d->Useqq(1);
		297	#$d->Bless(...);
		298	$d->Seen($_[1]) if @_ > 1;
		299	$d = $d->Dump();
		300	}
		301	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		302	$d
		303	} || "[unable to dump $_[0]: '$@']";
		304	}
		305
115	=item $ref = cf::from_json $json	306	=item $ref = cf::decode_json $json
116		307
117	Converts a JSON string into the corresponding perl data structure.	308	Converts a JSON string into the corresponding perl data structure.
118		309
119	=cut
120
121	sub from_json($) {
122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
123	JSON::Syck::Load $_[0]
124	}
125
126	=item $json = cf::to_json $ref	310	=item $json = cf::encode_json $ref
127		311
128	Converts a perl data structure into its JSON representation.	312	Converts a perl data structure into its JSON representation.
129		313
130	=cut	314	=cut
131		315
132	sub to_json($) {	316	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	317
134	JSON::Syck::Dump $_[0]	318	sub encode_json($) { $json_coder->encode ($_[0]) }
		319	sub decode_json($) { $json_coder->decode ($_[0]) }
		320
		321	=item cf::post_init { BLOCK }
		322
		323	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		324	but I<before> the server starts ticking again.
		325
		326	The cdoeblock will have a single boolean argument to indicate whether this
		327	is a reload or not.
		328
		329	=cut
		330
		331	sub post_init(&) {
		332	push @POST_INIT, shift;
		333	}
		334
		335	=item cf::lock_wait $string
		336
		337	Wait until the given lock is available. See cf::lock_acquire.
		338
		339	=item my $lock = cf::lock_acquire $string
		340
		341	Wait until the given lock is available and then acquires it and returns
		342	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		343	for example when the coroutine gets canceled), the lock is automatically
		344	returned.
		345
		346	Locks are *not* recursive, locking from the same coro twice results in a
		347	deadlocked coro.
		348
		349	Lock names should begin with a unique identifier (for example, cf::map::find
		350	uses map_find and cf::map::load uses map_load).
		351
		352	=item $locked = cf::lock_active $string
		353
		354	Return true if the lock is currently active, i.e. somebody has locked it.
		355
		356	=cut
		357
		358	our $LOCKS = new Coro::SemaphoreSet;
		359
		360	sub lock_wait($) {
		361	$LOCKS->wait ($_[0]);
		362	}
		363
		364	sub lock_acquire($) {
		365	$LOCKS->guard ($_[0])
		366	}
		367
		368	sub lock_active($) {
		369	$LOCKS->count ($_[0]) < 1
		370	}
		371
		372	sub freeze_mainloop {
		373	tick_inhibit_inc;
		374
		375	&Guard::guard (\&tick_inhibit_dec);
		376	}
		377
		378	=item cf::periodic $interval, $cb
		379
		380	Like EV::periodic, but randomly selects a starting point so that the actions
		381	get spread over timer.
		382
		383	=cut
		384
		385	sub periodic($$) {
		386	my ($interval, $cb) = @_;
		387
		388	my $start = rand List::Util::min 180, $interval;
		389
		390	EV::periodic $start, $interval, 0, $cb
		391	}
		392
		393	=item cf::get_slot $time[, $priority[, $name]]
		394
		395	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		396	This call blocks and returns only when you have at least C<$time> seconds
		397	of cpu time till the next tick. The slot is only valid till the next cede.
		398
		399	The optional C<$name> can be used to identify the job to run. It might be
		400	used for statistical purposes and should identify the same time-class.
		401
		402	Useful for short background jobs.
		403
		404	=cut
		405
		406	our @SLOT_QUEUE;
		407	our $SLOT_QUEUE;
		408
		409	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		410	$SLOT_QUEUE = Coro::async {
		411	$Coro::current->desc ("timeslot manager");
		412
		413	my $signal = new Coro::Signal;
		414
		415	while () {
		416	next_job:
		417	my $avail = cf::till_tick;
		418	if ($avail > 0.01) {
		419	for (0 .. $#SLOT_QUEUE) {
		420	if ($SLOT_QUEUE[$_][0] < $avail) {
		421	my $job = splice @SLOT_QUEUE, $_, 1, ();
		422	$job->[2]->send;
		423	Coro::cede;
		424	goto next_job;
		425	}
		426	}
		427	}
		428
		429	if (@SLOT_QUEUE) {
		430	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		431	push @cf::WAIT_FOR_TICK, $signal;
		432	$signal->wait;
		433	} else {
		434	Coro::schedule;
		435	}
		436	}
		437	};
		438
		439	sub get_slot($;$$) {
		440	return if tick_inhibit || $Coro::current == $Coro::main;
		441
		442	my ($time, $pri, $name) = @_;
		443
		444	$time = $TICK * .6 if $time > $TICK * .6;
		445	my $sig = new Coro::Signal;
		446
		447	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		448	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		449	$SLOT_QUEUE->ready;
		450	$sig->wait;
		451	}
		452
		453	=item cf::async { BLOCK }
		454
		455	Currently the same as Coro::async_pool, meaning you cannot use
		456	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		457	thing you are allowed to do is call C<prio> on it.
		458
		459	=cut
		460
		461	BEGIN { *async = \&Coro::async_pool }
		462
		463	=item cf::sync_job { BLOCK }
		464
		465	The design of Deliantra requires that the main coroutine ($Coro::main)
		466	is always able to handle events or runnable, as Deliantra is only
		467	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		468	acceptable.
		469
		470	If it must be done, put the blocking parts into C<sync_job>. This will run
		471	the given BLOCK in another coroutine while waiting for the result. The
		472	server will be frozen during this time, so the block should either finish
		473	fast or be very important.
		474
		475	=cut
		476
		477	sub sync_job(&) {
		478	my ($job) = @_;
		479
		480	if ($Coro::current == $Coro::main) {
		481	my $time = EV::time;
		482
		483	# this is the main coro, too bad, we have to block
		484	# till the operation succeeds, freezing the server :/
		485
		486	LOG llevError, Carp::longmess "sync job";#d#
		487
		488	my $freeze_guard = freeze_mainloop;
		489
		490	my $busy = 1;
		491	my @res;
		492
		493	(async {
		494	$Coro::current->desc ("sync job coro");
		495	@res = eval { $job->() };
		496	warn $@ if $@;
		497	undef $busy;
		498	})->prio (Coro::PRIO_MAX);
		499
		500	while ($busy) {
		501	if (Coro::nready) {
		502	Coro::cede_notself;
		503	} else {
		504	EV::loop EV::LOOP_ONESHOT;
		505	}
		506	}
		507
		508	my $time = EV::time - $time;
		509
		510	$TICK_START += $time; # do not account sync jobs to server load
		511
		512	wantarray ? @res : $res[0]
		513	} else {
		514	# we are in another coroutine, how wonderful, everything just works
		515
		516	$job->()
		517	}
		518	}
		519
		520	=item $coro = cf::async_ext { BLOCK }
		521
		522	Like async, but this coro is automatically being canceled when the
		523	extension calling this is being unloaded.
		524
		525	=cut
		526
		527	sub async_ext(&) {
		528	my $cb = shift;
		529
		530	my $coro = &Coro::async ($cb);
		531
		532	$coro->on_destroy (sub {
		533	delete $EXT_CORO{$coro+0};
		534	});
		535	$EXT_CORO{$coro+0} = $coro;
		536
		537	$coro
		538	}
		539
		540	=item fork_call { }, $args
		541
		542	Executes the given code block with the given arguments in a seperate
		543	process, returning the results. Everything must be serialisable with
		544	Coro::Storable. May, of course, block. Note that the executed sub may
		545	never block itself or use any form of event handling.
		546
		547	=cut
		548
		549	sub fork_call(&@) {
		550	my ($cb, @args) = @_;
		551
		552	# we seemingly have to make a local copy of the whole thing,
		553	# otherwise perl prematurely frees the stuff :/
		554	# TODO: investigate and fix (likely this will be rather laborious)
		555
		556	my @res = Coro::Util::fork_eval {
		557	reset_signals;
		558	&$cb
		559	}, @args;
		560
		561	wantarray ? @res : $res[-1]
		562	}
		563
		564	=item $coin = coin_from_name $name
		565
		566	=cut
		567
		568	our %coin_alias = (
		569	"silver" => "silvercoin",
		570	"silvercoin" => "silvercoin",
		571	"silvercoins" => "silvercoin",
		572	"gold" => "goldcoin",
		573	"goldcoin" => "goldcoin",
		574	"goldcoins" => "goldcoin",
		575	"platinum" => "platinacoin",
		576	"platinumcoin" => "platinacoin",
		577	"platinumcoins" => "platinacoin",
		578	"platina" => "platinacoin",
		579	"platinacoin" => "platinacoin",
		580	"platinacoins" => "platinacoin",
		581	"royalty" => "royalty",
		582	"royalties" => "royalty",
		583	);
		584
		585	sub coin_from_name($) {
		586	$coin_alias{$_[0]}
		587	? cf::arch::find $coin_alias{$_[0]}
		588	: undef
		589	}
		590
		591	=item $value = cf::db_get $family => $key
		592
		593	Returns a single value from the environment database.
		594
		595	=item cf::db_put $family => $key => $value
		596
		597	Stores the given C<$value> in the family. It can currently store binary
		598	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		599
		600	=item $db = cf::db_table "name"
		601
		602	Create and/or open a new database table. The string must not be "db" and must be unique
		603	within each server.
		604
		605	=cut
		606
		607	sub db_table($) {
		608	my ($name) = @_;
		609	my $db = BDB::db_create $DB_ENV;
		610
		611	eval {
		612	$db->set_flags (BDB::CHKSUM);
		613
		614	utf8::encode $name;
		615	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		616	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		617	cf::cleanup "db_open(db): $!" if $!;
		618	};
		619	cf::cleanup "db_open(db): $@" if $@;
		620
		621	$db
		622	}
		623
		624	our $DB;
		625
		626	sub db_init {
		627	cf::sync_job {
		628	$DB ||= db_table "db";
		629	};
		630	}
		631
		632	sub db_get($$) {
		633	my $key = "$_[0]/$_[1]";
		634
		635	cf::sync_job {
		636	BDB::db_get $DB, undef, $key, my $data;
		637
		638	$! ? ()
		639	: $data
		640	}
		641	}
		642
		643	sub db_put($$$) {
		644	BDB::dbreq_pri 4;
		645	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		646	}
		647
		648	=item cf::cache $id => [$paths...], $processversion => $process
		649
		650	Generic caching function that returns the value of the resource $id,
		651	caching and regenerating as required.
		652
		653	This function can block.
		654
		655	=cut
		656
		657	sub cache {
		658	my ($id, $src, $processversion, $process) = @_;
		659
		660	my $meta =
		661	join "\x00",
		662	$processversion,
		663	map {
		664	aio_stat $_
		665	and Carp::croak "$_: $!";
		666
		667	($_, (stat _)[7,9])
		668	} @$src;
		669
		670	my $dbmeta = db_get cache => "$id/meta";
		671	if ($dbmeta ne $meta) {
		672	# changed, we may need to process
		673
		674	my @data;
		675	my $md5;
		676
		677	for (0 .. $#$src) {
		678	0 <= aio_load $src->[$_], $data[$_]
		679	or Carp::croak "$src->[$_]: $!";
		680	}
		681
		682	# if processing is expensive, check
		683	# checksum first
		684	if (1) {
		685	$md5 =
		686	join "\x00",
		687	$processversion,
		688	map {
		689	cf::cede_to_tick;
		690	($src->[$_], Digest::MD5::md5_hex $data[$_])
		691	} 0.. $#$src;
		692
		693
		694	my $dbmd5 = db_get cache => "$id/md5";
		695	if ($dbmd5 eq $md5) {
		696	db_put cache => "$id/meta", $meta;
		697
		698	return db_get cache => "$id/data";
		699	}
		700	}
		701
		702	my $t1 = Time::HiRes::time;
		703	my $data = $process->(\@data);
		704	my $t2 = Time::HiRes::time;
		705
		706	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		707
		708	db_put cache => "$id/data", $data;
		709	db_put cache => "$id/md5" , $md5;
		710	db_put cache => "$id/meta", $meta;
		711
		712	return $data;
		713	}
		714
		715	db_get cache => "$id/data"
		716	}
		717
		718	=item cf::datalog type => key => value, ...
		719
		720	Log a datalog packet of the given type with the given key-value pairs.
		721
		722	=cut
		723
		724	sub datalog($@) {
		725	my ($type, %kv) = @_;
		726	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
135	}	727	}
136		728
137	=back	729	=back
138		730
139	=cut	731	=cut
140		732
141	#############################################################################	733	#############################################################################
142		734
143	=head2 ATTACHABLE OBJECTS	735	=head2 ATTACHABLE OBJECTS
144		736
145	Many objects in crossfire are so-called attachable objects. That means you can	737	Many objects in deliantra are so-called attachable objects. That means you can
146	attach callbacks/event handlers (a collection of which is called an "attachment")	738	attach callbacks/event handlers (a collection of which is called an "attachment")
147	to it. All such attachable objects support the following methods.	739	to it. All such attachable objects support the following methods.
148		740
149	In the following description, CLASS can be any of C<global>, C<object>	741	In the following description, CLASS can be any of C<global>, C<object>
150	C<player>, C<client> or C<map> (i.e. the attachable objects in	742	C<player>, C<client> or C<map> (i.e. the attachable objects in
151	crossfire+).	743	Deliantra).
152		744
153	=over 4	745	=over 4
154		746
155	=item $attachable->attach ($attachment, key => $value...)	747	=item $attachable->attach ($attachment, key => $value...)
156		748
…		…
200	=item cf::CLASS::attachment $name, ...	792	=item cf::CLASS::attachment $name, ...
201		793
202	Register an attachment by C<$name> through which attachable objects of the	794	Register an attachment by C<$name> through which attachable objects of the
203	given CLASS can refer to this attachment.	795	given CLASS can refer to this attachment.
204		796
205	Some classes such as crossfire maps and objects can specify attachments	797	Some classes such as deliantra maps and objects can specify attachments
206	that are attached at load/instantiate time, thus the need for a name.	798	that are attached at load/instantiate time, thus the need for a name.
207		799
208	These calls expect any number of the following handler/hook descriptions:	800	These calls expect any number of the following handler/hook descriptions:
209		801
210	=over 4	802	=over 4
…		…
249	my ($self, $victim) = @_;	841	my ($self, $victim) = @_;
250	...	842	...
251	}	843	}
252	}	844	}
253		845
		846	=item $attachable->valid
		847
		848	Just because you have a perl object does not mean that the corresponding
		849	C-level object still exists. If you try to access an object that has no
		850	valid C counterpart anymore you get an exception at runtime. This method
		851	can be used to test for existence of the C object part without causing an
		852	exception.
		853
254	=cut	854	=cut
255		855
256	# the following variables are defined in .xs and must not be re-created	856	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	857	our @CB_GLOBAL = (); # registry for all global events
		858	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	859	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	860	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	861	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	862	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	863	our @CB_MAP = ();
263		864
264	my %attachment;	865	my %attachment;
		866
		867	sub cf::attachable::thawer_merge {
		868	# simply override everything except _meta
		869	local $_[0]{_meta};
		870	%{$_[0]} = %{$_[1]};
		871	}
265		872
266	sub _attach_cb($$$$) {	873	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	874	my ($registry, $event, $prio, $cb) = @_;
268		875
269	use sort 'stable';	876	use sort 'stable';
…		…
272		879
273	@{$registry->[$event]} = sort	880	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	881	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	882	@{$registry->[$event] || []}, $cb;
276	}	883	}
		884
		885	# hack
		886	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		887
278	# attach handles attaching event callbacks	888	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	889	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	890	# registry (== where the callback attaches to).
281	sub _attach {	891	sub _attach {
…		…
283		893
284	my $object_type;	894	my $object_type;
285	my $prio = 0;	895	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	896	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		897
		898	#TODO: get rid of this hack
		899	if ($attachable_klass{$klass}) {
		900	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		901	}
		902
288	while (@arg) {	903	while (@arg) {
289	my $type = shift @arg;	904	my $type = shift @arg;
290		905
291	if ($type eq "prio") {	906	if ($type eq "prio") {
292	$prio = shift @arg;	907	$prio = shift @arg;
…		…
296	$registry = $CB_TYPE[$object_type] ||= [];	911	$registry = $CB_TYPE[$object_type] ||= [];
297		912
298	} elsif ($type eq "subtype") {	913	} elsif ($type eq "subtype") {
299	defined $object_type or Carp::croak "subtype specified without type";	914	defined $object_type or Carp::croak "subtype specified without type";
300	my $object_subtype = shift @arg;	915	my $object_subtype = shift @arg;
301	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	916	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
302		917
303	} elsif ($type eq "package") {	918	} elsif ($type eq "package") {
304	my $pkg = shift @arg;	919	my $pkg = shift @arg;
305		920
306	while (my ($name, $id) = each %cb_id) {	921	while (my ($name, $id) = each %cb_id) {
…		…
335	_attach $registry, $klass, @attach;	950	_attach $registry, $klass, @attach;
336	}	951	}
337		952
338	$obj->{$name} = \%arg;	953	$obj->{$name} = \%arg;
339	} else {	954	} else {
340	warn "object uses attachment '$name' that is not available, postponing.\n";	955	warn "object uses attachment '$name' which is not available, postponing.\n";
341	}	956	}
342		957
343	$obj->{_attachment}{$name} = undef;	958	$obj->{_attachment}{$name} = undef;
344	}	959	}
345		960
…		…
347	if (ref $_[0]) {	962	if (ref $_[0]) {
348	_object_attach @_;	963	_object_attach @_;
349	} else {	964	} else {
350	_attach shift->_attach_registry, @_;	965	_attach shift->_attach_registry, @_;
351	}	966	}
		967	_recalc_want;
352	};	968	};
353		969
354	# all those should be optimised	970	# all those should be optimised
355	sub cf::attachable::detach {	971	sub cf::attachable::detach {
356	my ($obj, $name) = @_;	972	my ($obj, $name) = @_;
…		…
359	delete $obj->{_attachment}{$name};	975	delete $obj->{_attachment}{$name};
360	reattach ($obj);	976	reattach ($obj);
361	} else {	977	} else {
362	Carp::croak "cannot, currently, detach class attachments";	978	Carp::croak "cannot, currently, detach class attachments";
363	}	979	}
		980	_recalc_want;
364	};	981	};
365		982
366	sub cf::attachable::attached {	983	sub cf::attachable::attached {
367	my ($obj, $name) = @_;	984	my ($obj, $name) = @_;
368		985
369	exists $obj->{_attachment}{$name}	986	exists $obj->{_attachment}{$name}
370	}	987	}
371		988
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	989	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	990	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	991	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	992	(\\\@CB_$klass, KLASS_$klass)
376	}	993	}
377		994
…		…
383	";	1000	";
384	die if $@;	1001	die if $@;
385	}	1002	}
386		1003
387	our $override;	1004	our $override;
388	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1005	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
389		1006
390	sub override {	1007	sub override {
391	$override = 1;	1008	$override = 1;
392	@invoke_results = ();	1009	@INVOKE_RESULTS = (@_);
393	}	1010	}
394		1011
395	sub do_invoke {	1012	sub do_invoke {
396	my $event = shift;	1013	my $event = shift;
397	my $callbacks = shift;	1014	my $callbacks = shift;
398		1015
399	@invoke_results = ();	1016	@INVOKE_RESULTS = ();
400		1017
401	local $override;	1018	local $override;
402		1019
403	for (@$callbacks) {	1020	for (@$callbacks) {
404	eval { &{$_->[1]} };	1021	eval { &{$_->[1]} };
…		…
413	}	1030	}
414		1031
415	0	1032	0
416	}	1033	}
417		1034
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	1035	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
419		1036
420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
421
422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
423
424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	1037	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		1038
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	1039	Generate an object-specific event with the given arguments.
429		1040
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	1041	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override	1042	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	1043	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
441
442	Attachable objects includes objects, players, clients and maps.
443
444	=over 4
445
446	=item $object->valid
447
448	Just because you have a perl object does not mean that the corresponding
449	C-level object still exists. If you try to access an object that has no
450	valid C counterpart anymore you get an exception at runtime. This method
451	can be used to test for existence of the C object part without causing an
452	exception.
453		1044
454	=back	1045	=back
455		1046
456	=cut	1047	=cut
457		1048
458	#############################################################################	1049	#############################################################################
459	# object support	1050	# object support
460		1051
461	sub instantiate {	1052	sub _object_equal($$);
		1053	sub _object_equal($$) {
		1054	my ($a, $b) = @_;
		1055
		1056	return 0 unless (ref $a) eq (ref $b);
		1057
		1058	if ("HASH" eq ref $a) {
		1059	my @ka = keys %$a;
		1060	my @kb = keys %$b;
		1061
		1062	return 0 if @ka != @kb;
		1063
		1064	for (0 .. $#ka) {
		1065	return 0 unless $ka[$_] eq $kb[$_];
		1066	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1067	}
		1068
		1069	} elsif ("ARRAY" eq ref $a) {
		1070
		1071	return 0 if @$a != @$b;
		1072
		1073	for (0 .. $#$a) {
		1074	return 0 unless _object_equal $a->[$_], $b->[$_];
		1075	}
		1076
		1077	} elsif ($a ne $b) {
		1078	return 0;
		1079	}
		1080
		1081	1
		1082	}
		1083
		1084	our $SLOW_MERGES;#d#
		1085	sub _can_merge {
462	my ($obj, $data) = @_;	1086	my ($ob1, $ob2) = @_;
463		1087
464	$data = from_json $data;	1088	++$SLOW_MERGES;#d#
465		1089
466	for (@$data) {	1090	# we do the slow way here
467	my ($name, $args) = @$_;	1091	return _object_equal $ob1, $ob2
468
469	$obj->attach ($name, %{$args || {} });
470	}
471	}	1092	}
472		1093
473	# basically do the same as instantiate, without calling instantiate
474	sub reattach {	1094	sub reattach {
		1095	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	1096	my ($obj) = @_;
		1097
		1098	# no longer needed after getting rid of delete_package?
		1099	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1100
476	my $registry = $obj->registry;	1101	my $registry = $obj->registry;
477		1102
478	@$registry = ();	1103	@$registry = ();
479		1104
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1105	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	1114	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	1115	}
491	}	1116	}
492	}	1117	}
493		1118
494	sub object_freezer_save {	1119	cf::attachable->attach (
495	my ($filename, $rdata, $objs) = @_;
496
497	if (length $$rdata) {
498	warn sprintf "saving %s (%d,%d)\n",
499	$filename, length $$rdata, scalar @$objs;
500
501	if (open my $fh, ">:raw", "$filename~") {
502	chmod SAVE_MODE, $fh;
503	syswrite $fh, $$rdata;
504	close $fh;
505
506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
509	close $fh;
510	rename "$filename.pst~", "$filename.pst";
511	} else {
512	unlink "$filename.pst";
513	}
514
515	rename "$filename~", $filename;
516	} else {
517	warn "FATAL: $filename~: $!\n";
518	}
519	} else {
520	unlink $filename;
521	unlink "$filename.pst";
522	}
523	}
524
525	sub object_freezer_as_string {
526	my ($rdata, $objs) = @_;
527
528	use Data::Dumper;
529
530	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	1120	prio => -1000000,
		1121	on_instantiate => sub {
		1122	my ($obj, $data) = @_;
		1123
		1124	$data = decode_json $data;
		1125
		1126	for (@$data) {
		1127	my ($name, $args) = @$_;
		1128
		1129	$obj->attach ($name, %{$args || {} });
		1130	}
		1131	},
		1132	on_reattach => \&reattach,
554	on_clone => sub {	1133	on_clone => sub {
555	my ($src, $dst) = @_;	1134	my ($src, $dst) = @_;
556		1135
557	@{$dst->registry} = @{$src->registry};	1136	@{$dst->registry} = @{$src->registry};
558		1137
…		…
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	1140	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	1141	if exists $src->{_attachment};
563	},	1142	},
564	);	1143	);
565		1144
		1145	sub object_freezer_save {
		1146	my ($filename, $rdata, $objs) = @_;
		1147
		1148	sync_job {
		1149	if (length $$rdata) {
		1150	utf8::decode (my $decname = $filename);
		1151	warn sprintf "saving %s (%d,%d)\n",
		1152	$decname, length $$rdata, scalar @$objs;
		1153
		1154	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1155	aio_chmod $fh, SAVE_MODE;
		1156	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1157	if ($cf::USE_FSYNC) {
		1158	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1159	aio_fsync $fh;
		1160	}
		1161	aio_close $fh;
		1162
		1163	if (@$objs) {
		1164	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1165	aio_chmod $fh, SAVE_MODE;
		1166	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1167	aio_write $fh, 0, (length $data), $data, 0;
		1168	if ($cf::USE_FSYNC) {
		1169	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1170	aio_fsync $fh;
		1171	}
		1172	aio_close $fh;
		1173	aio_rename "$filename.pst~", "$filename.pst";
		1174	}
		1175	} else {
		1176	aio_unlink "$filename.pst";
		1177	}
		1178
		1179	aio_rename "$filename~", $filename;
		1180
		1181	$filename =~ s%/[^/]+$%%;
		1182	aio_pathsync $filename if $cf::USE_FSYNC;
		1183	} else {
		1184	warn "unable to save objects: $filename~: $!\n";
		1185	}
		1186	} else {
		1187	aio_unlink $filename;
		1188	aio_unlink "$filename.pst";
		1189	}
		1190	};
		1191	}
		1192
		1193	sub object_freezer_as_string {
		1194	my ($rdata, $objs) = @_;
		1195
		1196	use Data::Dumper;
		1197
		1198	$$rdata . Dumper $objs
		1199	}
		1200
		1201	sub object_thawer_load {
		1202	my ($filename) = @_;
		1203
		1204	my ($data, $av);
		1205
		1206	(aio_load $filename, $data) >= 0
		1207	or return;
		1208
		1209	unless (aio_stat "$filename.pst") {
		1210	(aio_load "$filename.pst", $av) >= 0
		1211	or return;
		1212
		1213	my $st = eval { Coro::Storable::thaw $av };
		1214	$av = $st->{objs};
		1215	}
		1216
		1217	utf8::decode (my $decname = $filename);
		1218	warn sprintf "loading %s (%d,%d)\n",
		1219	$decname, length $data, scalar @{$av || []};
		1220
		1221	($data, $av)
		1222	}
		1223
		1224	=head2 COMMAND CALLBACKS
		1225
		1226	=over 4
		1227
		1228	=cut
		1229
566	#############################################################################	1230	#############################################################################
567	# command handling &c	1231	# command handling &c
568		1232
569	=item cf::register_command $name => \&callback($ob,$args);	1233	=item cf::register_command $name => \&callback($ob,$args);
570		1234
…		…
582	push @{ $COMMAND{$name} }, [$caller, $cb];	1246	push @{ $COMMAND{$name} }, [$caller, $cb];
583	}	1247	}
584		1248
585	=item cf::register_extcmd $name => \&callback($pl,$packet);	1249	=item cf::register_extcmd $name => \&callback($pl,$packet);
586		1250
587	Register a callbackf ro execution when the client sends an extcmd packet.	1251	Register a callback for execution when the client sends an (synchronous)
		1252	extcmd packet. Ext commands will be processed in the order they are
		1253	received by the server, like other user commands. The first argument is
		1254	the logged-in player. Ext commands can only be processed after a player
		1255	has logged in successfully.
588		1256
589	If the callback returns something, it is sent back as if reply was being	1257	If the callback returns something, it is sent back as if reply was being
590	called.	1258	called.
591		1259
		1260	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1261
		1262	Register a callback for execution when the client sends an (asynchronous)
		1263	exticmd packet. Exti commands are processed by the server as soon as they
		1264	are received, i.e. out of order w.r.t. other commands. The first argument
		1265	is a client socket. Exti commands can be received anytime, even before
		1266	log-in.
		1267
		1268	If the callback returns something, it is sent back as if reply was being
		1269	called.
		1270
592	=cut	1271	=cut
593		1272
594	sub register_extcmd {	1273	sub register_extcmd {
595	my ($name, $cb) = @_;	1274	my ($name, $cb) = @_;
596		1275
597	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";
599
600	$EXTCMD{$name} = [$cb, $caller];	1276	$EXTCMD{$name} = $cb;
601	}	1277	}
		1278
		1279	sub register_exticmd {
		1280	my ($name, $cb) = @_;
		1281
		1282	$EXTICMD{$name} = $cb;
		1283	}
		1284
		1285	use File::Glob ();
602		1286
603	cf::player->attach (	1287	cf::player->attach (
604	on_command => sub {	1288	on_command => sub {
605	my ($pl, $name, $params) = @_;	1289	my ($pl, $name, $params) = @_;
606		1290
…		…
614	cf::override;	1298	cf::override;
615	},	1299	},
616	on_extcmd => sub {	1300	on_extcmd => sub {
617	my ($pl, $buf) = @_;	1301	my ($pl, $buf) = @_;
618		1302
619	my $msg = eval { from_json $buf };	1303	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
620		1304
621	if (ref $msg) {	1305	if (ref $msg) {
		1306	my ($type, $reply, @payload) =
		1307	"ARRAY" eq ref $msg
		1308	? @$msg
		1309	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1310
		1311	my @reply;
		1312
622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1313	if (my $cb = $EXTCMD{$type}) {
623	if (my %reply = $cb->[0]->($pl, $msg)) {	1314	@reply = $cb->($pl, @payload);
624	$pl->ext_reply ($msg->{msgid}, %reply);
625	}
626	}	1315	}
		1316
		1317	$pl->ext_reply ($reply, @reply)
		1318	if $reply;
		1319
627	} else {	1320	} else {
628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1321	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
629	}	1322	}
630		1323
631	cf::override;	1324	cf::override;
632	},	1325	},
633	);	1326	);
634		1327
		1328	# "readahead" all extensions
		1329	sub cache_extensions {
		1330	my $grp = IO::AIO::aio_group;
		1331
		1332	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1333	for (grep /\.ext$/, @{$_[0]}) {
		1334	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1335	}
		1336	};
		1337
		1338	$grp
		1339	}
		1340
		1341	sub load_extensions {
		1342	cf::sync_job {
		1343	my %todo;
		1344
		1345	for my $path (<$LIBDIR/*.ext>) {
		1346	next unless -r $path;
		1347
		1348	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1349	my $base = $1;
		1350	my $pkg = $1;
		1351	$pkg =~ s/[^[:word:]]/_/g;
		1352	$pkg = "ext::$pkg";
		1353
		1354	open my $fh, "<:utf8", $path
		1355	or die "$path: $!";
		1356
		1357	my $source = do { local $/; <$fh> };
		1358
		1359	my %ext = (
		1360	path => $path,
		1361	base => $base,
		1362	pkg => $pkg,
		1363	);
		1364
		1365	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1366	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1367
		1368	$ext{source} =
		1369	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1370	. "#line 1 \"$path\"\n{\n"
		1371	. $source
		1372	. "\n};\n1";
		1373
		1374	$todo{$base} = \%ext;
		1375	}
		1376
		1377	my %done;
		1378	while (%todo) {
		1379	my $progress;
		1380
		1381	while (my ($k, $v) = each %todo) {
		1382	for (split /,\s*/, $v->{meta}{depends}) {
		1383	goto skip
		1384	unless exists $done{$_};
		1385	}
		1386
		1387	warn "... loading '$k' into '$v->{pkg}'\n";
		1388
		1389	unless (eval $v->{source}) {
		1390	my $msg = $@ ? "$v->{path}: $@\n"
		1391	: "$v->{base}: extension inactive.\n";
		1392
		1393	if (exists $v->{meta}{mandatory}) {
		1394	warn $msg;
		1395	cf::cleanup "mandatory extension failed to load, exiting.";
		1396	}
		1397
		1398	warn $msg;
		1399	}
		1400
		1401	$done{$k} = delete $todo{$k};
		1402	push @EXTS, $v->{pkg};
		1403	$progress = 1;
		1404	}
		1405
		1406	skip:
		1407	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1408	unless $progress;
		1409	}
		1410	};
		1411	}
		1412
		1413	#############################################################################
		1414
		1415	=back
		1416
		1417	=head2 CORE EXTENSIONS
		1418
		1419	Functions and methods that extend core deliantra objects.
		1420
		1421	=cut
		1422
		1423	package cf::player;
		1424
		1425	use Coro::AIO;
		1426
		1427	=head3 cf::player
		1428
		1429	=over 4
		1430
		1431	=item cf::player::num_playing
		1432
		1433	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1434
		1435	=cut
		1436
		1437	sub num_playing {
		1438	scalar grep
		1439	$_->ob->map
		1440	&& !$_->hidden
		1441	&& !$_->ob->flag (cf::FLAG_WIZ),
		1442	cf::player::list
		1443	}
		1444
		1445	=item cf::player::find $login
		1446
		1447	Returns the given player object, loading it if necessary (might block).
		1448
		1449	=cut
		1450
		1451	sub playerdir($) {
		1452	"$PLAYERDIR/"
		1453	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1454	}
		1455
		1456	sub path($) {
		1457	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1458
		1459	(playerdir $login) . "/playerdata"
		1460	}
		1461
		1462	sub find_active($) {
		1463	$cf::PLAYER{$_[0]}
		1464	and $cf::PLAYER{$_[0]}->active
		1465	and $cf::PLAYER{$_[0]}
		1466	}
		1467
		1468	sub exists($) {
		1469	my ($login) = @_;
		1470
		1471	$cf::PLAYER{$login}
		1472	or !aio_stat path $login
		1473	}
		1474
		1475	sub find($) {
		1476	return $cf::PLAYER{$_[0]} || do {
		1477	my $login = $_[0];
		1478
		1479	my $guard = cf::lock_acquire "user_find:$login";
		1480
		1481	$cf::PLAYER{$_[0]} || do {
		1482	# rename old playerfiles to new ones
		1483	#TODO: remove when no longer required
		1484	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1485	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1486	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1487	aio_unlink +(playerdir $login) . "/$login.pl";
		1488
		1489	my $f = new_from_file cf::object::thawer path $login
		1490	or return;
		1491
		1492	my $pl = cf::player::load_pl $f
		1493	or return;
		1494
		1495	local $cf::PLAYER_LOADING{$login} = $pl;
		1496	$f->resolve_delayed_derefs;
		1497	$cf::PLAYER{$login} = $pl
		1498	}
		1499	}
		1500	}
		1501
		1502	sub save($) {
		1503	my ($pl) = @_;
		1504
		1505	return if $pl->{deny_save};
		1506
		1507	my $path = path $pl;
		1508	my $guard = cf::lock_acquire "user_save:$path";
		1509
		1510	return if $pl->{deny_save};
		1511
		1512	aio_mkdir playerdir $pl, 0770;
		1513	$pl->{last_save} = $cf::RUNTIME;
		1514
		1515	cf::get_slot 0.01;
		1516
		1517	$pl->save_pl ($path);
		1518	cf::cede_to_tick;
		1519	}
		1520
		1521	sub new($) {
		1522	my ($login) = @_;
		1523
		1524	my $self = create;
		1525
		1526	$self->ob->name ($login);
		1527	$self->{deny_save} = 1;
		1528
		1529	$cf::PLAYER{$login} = $self;
		1530
		1531	$self
		1532	}
		1533
		1534	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1535
		1536	=cut
		1537
		1538	sub send_msg {
		1539	my $ns = shift->ns
		1540	or return;
		1541	$ns->send_msg (@_);
		1542	}
		1543
		1544	=item $pl->quit_character
		1545
		1546	Nukes the player without looking back. If logged in, the connection will
		1547	be destroyed. May block for a long time.
		1548
		1549	=cut
		1550
		1551	sub quit_character {
		1552	my ($pl) = @_;
		1553
		1554	my $name = $pl->ob->name;
		1555
		1556	$pl->{deny_save} = 1;
		1557	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1558
		1559	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1560	$pl->deactivate;
		1561	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1562	$pl->ob->check_score;
		1563	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1564	$pl->ns->destroy if $pl->ns;
		1565
		1566	my $path = playerdir $pl;
		1567	my $temp = "$path~$cf::RUNTIME~deleting~";
		1568	aio_rename $path, $temp;
		1569	delete $cf::PLAYER{$pl->ob->name};
		1570	$pl->destroy;
		1571
		1572	my $prefix = qr<^~\Q$name\E/>;
		1573
		1574	# nuke player maps
		1575	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1576
		1577	IO::AIO::aio_rmtree $temp;
		1578	}
		1579
		1580	=item $pl->kick
		1581
		1582	Kicks a player out of the game. This destroys the connection.
		1583
		1584	=cut
		1585
		1586	sub kick {
		1587	my ($pl, $kicker) = @_;
		1588
		1589	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1590	$pl->killer ("kicked");
		1591	$pl->ns->destroy;
		1592	}
		1593
		1594	=item cf::player::list_logins
		1595
		1596	Returns am arrayref of all valid playernames in the system, can take a
		1597	while and may block, so not sync_job-capable, ever.
		1598
		1599	=cut
		1600
		1601	sub list_logins {
		1602	my $dirs = aio_readdir $PLAYERDIR
		1603	or return [];
		1604
		1605	my @logins;
		1606
		1607	for my $login (@$dirs) {
		1608	my $path = path $login;
		1609
		1610	# a .pst is a dead give-away for a valid player
		1611	# if no pst file found, open and chekc for blocked users
		1612	if (aio_stat "$path.pst") {
		1613	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1614	aio_read $fh, 0, 512, my $buf, 0 or next;
		1615	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1616	}
		1617
		1618	utf8::decode $login;
		1619	push @logins, $login;
		1620	}
		1621
		1622	\@logins
		1623	}
		1624
		1625	=item $player->maps
		1626
		1627	Returns an arrayref of map paths that are private for this
		1628	player. May block.
		1629
		1630	=cut
		1631
		1632	sub maps($) {
		1633	my ($pl) = @_;
		1634
		1635	$pl = ref $pl ? $pl->ob->name : $pl;
		1636
		1637	my $files = aio_readdir playerdir $pl
		1638	or return;
		1639
		1640	my @paths;
		1641
		1642	for (@$files) {
		1643	utf8::decode $_;
		1644	next if /\.(?:pl|pst)$/;
		1645	next unless /^$PATH_SEP/o;
		1646
		1647	push @paths, cf::map::normalise "~$pl/$_";
		1648	}
		1649
		1650	\@paths
		1651	}
		1652
		1653	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1654
		1655	Expand deliantra pod fragments into protocol xml.
		1656
		1657	=item $player->ext_reply ($msgid, @msg)
		1658
		1659	Sends an ext reply to the player.
		1660
		1661	=cut
		1662
		1663	sub ext_reply($$@) {
		1664	my ($self, $id, @msg) = @_;
		1665
		1666	$self->ns->ext_reply ($id, @msg)
		1667	}
		1668
		1669	=item $player->ext_msg ($type, @msg)
		1670
		1671	Sends an ext event to the client.
		1672
		1673	=cut
		1674
		1675	sub ext_msg($$@) {
		1676	my ($self, $type, @msg) = @_;
		1677
		1678	$self->ns->ext_msg ($type, @msg);
		1679	}
		1680
		1681	=head3 cf::region
		1682
		1683	=over 4
		1684
		1685	=cut
		1686
		1687	package cf::region;
		1688
		1689	=item cf::region::find_by_path $path
		1690
		1691	Tries to decuce the likely region for a map knowing only its path.
		1692
		1693	=cut
		1694
		1695	sub find_by_path($) {
		1696	my ($path) = @_;
		1697
		1698	my ($match, $specificity);
		1699
		1700	for my $region (list) {
		1701	if ($region->{match} && $path =~ $region->{match}) {
		1702	($match, $specificity) = ($region, $region->specificity)
		1703	if $region->specificity > $specificity;
		1704	}
		1705	}
		1706
		1707	$match
		1708	}
		1709
		1710	=back
		1711
		1712	=head3 cf::map
		1713
		1714	=over 4
		1715
		1716	=cut
		1717
		1718	package cf::map;
		1719
		1720	use Fcntl;
		1721	use Coro::AIO;
		1722
		1723	use overload
		1724	'""' => \&as_string,
		1725	fallback => 1;
		1726
		1727	our $MAX_RESET = 3600;
		1728	our $DEFAULT_RESET = 3000;
		1729
		1730	sub generate_random_map {
		1731	my ($self, $rmp) = @_;
		1732
		1733	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1734
		1735	# mit "rum" bekleckern, nicht
		1736	$self->_create_random_map (
		1737	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1738	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1739	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1740	$rmp->{exit_on_final_map},
		1741	$rmp->{xsize}, $rmp->{ysize},
		1742	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1743	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1744	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1745	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1746	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1747	(cf::region::find $rmp->{region}), $rmp->{custom}
		1748	)
		1749	}
		1750
		1751	=item cf::map->register ($regex, $prio)
		1752
		1753	Register a handler for the map path matching the given regex at the
		1754	givne priority (higher is better, built-in handlers have priority 0, the
		1755	default).
		1756
		1757	=cut
		1758
635	sub register {	1759	sub register {
		1760	my (undef, $regex, $prio) = @_;
		1761	my $pkg = caller;
		1762
		1763	no strict;
		1764	push @{"$pkg\::ISA"}, __PACKAGE__;
		1765
		1766	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1767	}
		1768
		1769	# also paths starting with '/'
		1770	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1771
		1772	sub thawer_merge {
636	my ($base, $pkg) = @_;	1773	my ($self, $merge) = @_;
637		1774
638	#TODO	1775	# we have to keep some variables in memory intact
639	}	1776	local $self->{path};
		1777	local $self->{load_path};
640		1778
641	sub load_extension {	1779	$self->SUPER::thawer_merge ($merge);
		1780	}
		1781
		1782	sub normalise {
642	my ($path) = @_;	1783	my ($path, $base) = @_;
643		1784
644	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1785	$path = "$path"; # make sure its a string
645	my $base = $1;
646	my $pkg = $1;
647	$pkg =~ s/[^[:word:]]/_/g;
648	$pkg = "ext::$pkg";
649		1786
650	warn "loading '$path' into '$pkg'\n";	1787	$path =~ s/\.map$//;
651		1788
652	open my $fh, "<:utf8", $path	1789	# map plan:
653	or die "$path: $!";	1790	#
		1791	# /! non-realised random map exit (special hack!)
		1792	# {... are special paths that are not being touched
		1793	# ?xxx/... are special absolute paths
		1794	# ?random/... random maps
		1795	# /... normal maps
		1796	# ~user/... per-player map of a specific user
654		1797
655	my $source =	1798	$path =~ s/$PATH_SEP/\//go;
656	"package $pkg; use strict; use utf8;\n"
657	. "#line 1 \"$path\"\n{\n"
658	. (do { local $/; <$fh> })
659	. "\n};\n1";
660		1799
661	eval $source	1800	# treat it as relative path if it starts with
662	or die $@ ? "$path: $@\n"	1801	# something that looks reasonable
663	: "extension disabled.\n";	1802	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1803	$base or Carp::carp "normalise called with relative path and no base: '$path'";
664		1804
665	push @exts, $pkg;	1805	$base =~ s{[^/]+/?$}{};
666	$ext_pkg{$base} = $pkg;	1806	$path = "$base/$path";
667
668	# no strict 'refs';
669	# @{"$pkg\::ISA"} = ext::;
670
671	register $base, $pkg;
672	}
673
674	sub unload_extension {
675	my ($pkg) = @_;
676
677	warn "removing extension $pkg\n";
678
679	# remove hooks
680	#TODO
681	# for my $idx (0 .. $#PLUGIN_EVENT) {
682	# delete $hook[$idx]{$pkg};
683	# }	1807	}
684		1808
685	# remove commands	1809	for ($path) {
686	for my $name (keys %COMMAND) {	1810	redo if s{//}{/};
687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1811	redo if s{/\.?/}{/};
		1812	redo if s{/[^/]+/\.\./}{/};
		1813	}
688		1814
689	if (@cb) {	1815	$path
690	$COMMAND{$name} = \@cb;	1816	}
		1817
		1818	sub new_from_path {
		1819	my (undef, $path, $base) = @_;
		1820
		1821	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1822
		1823	$path = normalise $path, $base;
		1824
		1825	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1826	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1827	my $self = bless cf::map::new, $pkg;
		1828	$self->{path} = $path; $self->path ($path);
		1829	$self->init; # pass $1 etc.
		1830	return $self;
		1831	}
		1832	}
		1833
		1834	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1835	()
		1836	}
		1837
		1838	sub init {
		1839	my ($self) = @_;
		1840
		1841	$self
		1842	}
		1843
		1844	sub as_string {
		1845	my ($self) = @_;
		1846
		1847	"$self->{path}"
		1848	}
		1849
		1850	# the displayed name, this is a one way mapping
		1851	sub visible_name {
		1852	&as_string
		1853	}
		1854
		1855	# the original (read-only) location
		1856	sub load_path {
		1857	my ($self) = @_;
		1858
		1859	"$MAPDIR/$self->{path}.map"
		1860	}
		1861
		1862	# the temporary/swap location
		1863	sub save_path {
		1864	my ($self) = @_;
		1865
		1866	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1867	"$TMPDIR/$path.map"
		1868	}
		1869
		1870	# the unique path, undef == no special unique path
		1871	sub uniq_path {
		1872	my ($self) = @_;
		1873
		1874	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1875	"$UNIQUEDIR/$path"
		1876	}
		1877
		1878	sub decay_objects {
		1879	my ($self) = @_;
		1880
		1881	return if $self->{deny_reset};
		1882
		1883	$self->do_decay_objects;
		1884	}
		1885
		1886	sub unlink_save {
		1887	my ($self) = @_;
		1888
		1889	utf8::encode (my $save = $self->save_path);
		1890	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1891	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1892	}
		1893
		1894	sub load_header_from($) {
		1895	my ($self, $path) = @_;
		1896
		1897	utf8::encode $path;
		1898	my $f = new_from_file cf::object::thawer $path
		1899	or return;
		1900
		1901	$self->_load_header ($f)
		1902	or return;
		1903
		1904	local $MAP_LOADING{$self->{path}} = $self;
		1905	$f->resolve_delayed_derefs;
		1906
		1907	$self->{load_path} = $path;
		1908
		1909	1
		1910	}
		1911
		1912	sub load_header_orig {
		1913	my ($self) = @_;
		1914
		1915	$self->load_header_from ($self->load_path)
		1916	}
		1917
		1918	sub load_header_temp {
		1919	my ($self) = @_;
		1920
		1921	$self->load_header_from ($self->save_path)
		1922	}
		1923
		1924	sub prepare_temp {
		1925	my ($self) = @_;
		1926
		1927	$self->last_access ((delete $self->{last_access})
		1928	|| $cf::RUNTIME); #d#
		1929	# safety
		1930	$self->{instantiate_time} = $cf::RUNTIME
		1931	if $self->{instantiate_time} > $cf::RUNTIME;
		1932	}
		1933
		1934	sub prepare_orig {
		1935	my ($self) = @_;
		1936
		1937	$self->{load_original} = 1;
		1938	$self->{instantiate_time} = $cf::RUNTIME;
		1939	$self->last_access ($cf::RUNTIME);
		1940	$self->instantiate;
		1941	}
		1942
		1943	sub load_header {
		1944	my ($self) = @_;
		1945
		1946	if ($self->load_header_temp) {
		1947	$self->prepare_temp;
691	} else {	1948	} else {
692	delete $COMMAND{$name};	1949	$self->load_header_orig
693	}	1950	or return;
		1951	$self->prepare_orig;
		1952	}
		1953
		1954	$self->{deny_reset} = 1
		1955	if $self->no_reset;
		1956
		1957	$self->default_region (cf::region::find_by_path $self->{path})
		1958	unless $self->default_region;
		1959
694	}	1960	1
		1961	}
695		1962
696	# remove extcmds	1963	sub find;
697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1964	sub find {
698	delete $EXTCMD{$name};	1965	my ($path, $origin) = @_;
		1966
		1967	$path = normalise $path, $origin && $origin->path;
		1968
		1969	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		1970	my $guard2 = cf::lock_acquire "map_find:$path";
		1971
		1972	$cf::MAP{$path} || do {
		1973	my $map = new_from_path cf::map $path
		1974	or return;
		1975
		1976	$map->{last_save} = $cf::RUNTIME;
		1977
		1978	$map->load_header
		1979	or return;
		1980
		1981	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1982	# doing this can freeze the server in a sync job, obviously
		1983	#$cf::WAIT_FOR_TICK->wait;
		1984	undef $guard2;
		1985	undef $guard1;
		1986	$map->reset;
		1987	return find $path;
		1988	}
		1989
		1990	$cf::MAP{$path} = $map
		1991	}
		1992	}
		1993
		1994	sub pre_load { }
		1995	sub post_load { }
		1996
		1997	sub load {
		1998	my ($self) = @_;
		1999
		2000	local $self->{deny_reset} = 1; # loading can take a long time
		2001
		2002	my $path = $self->{path};
		2003
699	}	2004	{
		2005	my $guard = cf::lock_acquire "map_data:$path";
700		2006
701	if (my $cb = $pkg->can ("unload")) {	2007	return unless $self->valid;
702	eval {	2008	return unless $self->in_memory == cf::MAP_SWAPPED;
703	$cb->($pkg);	2009
		2010	$self->in_memory (cf::MAP_LOADING);
		2011
		2012	$self->alloc;
		2013
		2014	$self->pre_load;
		2015	cf::cede_to_tick;
		2016
		2017	my $f = new_from_file cf::object::thawer $self->{load_path};
		2018	$f->skip_block;
		2019	$self->_load_objects ($f)
		2020	or return;
		2021
		2022	$self->post_load_original
		2023	if delete $self->{load_original};
		2024
		2025	if (my $uniq = $self->uniq_path) {
		2026	utf8::encode $uniq;
		2027	unless (aio_stat $uniq) {
		2028	if (my $f = new_from_file cf::object::thawer $uniq) {
		2029	$self->clear_unique_items;
		2030	$self->_load_objects ($f);
		2031	$f->resolve_delayed_derefs;
		2032	}
704	1	2033	}
705	} or warn "$pkg unloaded, but with errors: $@";	2034	}
706	}
707		2035
708	Symbol::delete_package $pkg;	2036	$f->resolve_delayed_derefs;
709	}
710		2037
711	sub load_extensions {	2038	cf::cede_to_tick;
712	for my $ext (<$LIBDIR/*.ext>) {	2039	# now do the right thing for maps
713	next unless -r $ext;	2040	$self->link_multipart_objects;
714	eval {	2041	$self->difficulty ($self->estimate_difficulty)
715	load_extension $ext;	2042	unless $self->difficulty;
716	1	2043	cf::cede_to_tick;
717	} or warn "$ext not loaded: $@";
718	}
719	}
720		2044
721	#############################################################################	2045	unless ($self->{deny_activate}) {
722	# load/save/clean perl data associated with a map	2046	$self->decay_objects;
		2047	$self->fix_auto_apply;
		2048	$self->update_buttons;
		2049	cf::cede_to_tick;
		2050	$self->activate;
		2051	}
723		2052
724	*cf::mapsupport::on_clean = sub {	2053	$self->{last_save} = $cf::RUNTIME;
		2054	$self->last_access ($cf::RUNTIME);
		2055
		2056	$self->in_memory (cf::MAP_ACTIVE);
		2057	}
		2058
		2059	$self->post_load;
		2060	}
		2061
		2062	sub customise_for {
		2063	my ($self, $ob) = @_;
		2064
		2065	return find "~" . $ob->name . "/" . $self->{path}
		2066	if $self->per_player;
		2067
		2068	# return find "?party/" . $ob->name . "/" . $self->{path}
		2069	# if $self->per_party;
		2070
		2071	$self
		2072	}
		2073
		2074	# find and load all maps in the 3x3 area around a map
		2075	sub load_neighbours {
725	my ($map) = @_;	2076	my ($map) = @_;
726		2077
727	my $path = $map->tmpname;	2078	my @neigh; # diagonal neighbours
728	defined $path or return;
729		2079
730	unlink "$path.pst";	2080	for (0 .. 3) {
731	};	2081	my $neigh = $map->tile_path ($_)
		2082	or next;
		2083	$neigh = find $neigh, $map
		2084	or next;
		2085	$neigh->load;
732		2086
733	cf::map->attach (prio => -10000, package => cf::mapsupport::);	2087	push @neigh,
		2088	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2089	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2090	}
734		2091
735	#############################################################################	2092	for (grep defined $_->[0], @neigh) {
736	# load/save perl data associated with player->ob objects	2093	my ($path, $origin) = @$_;
737		2094	my $neigh = find $path, $origin
738	sub all_objects(@) {	2095	or next;
739	@_, map all_objects ($_->inv), @_	2096	$neigh->load;
		2097	}
740	}	2098	}
741		2099
742	# TODO: compatibility cruft, remove when no longer needed	2100	sub find_sync {
743	cf::player->attach (	2101	my ($path, $origin) = @_;
744	on_load => sub {
745	my ($pl, $path) = @_;
746		2102
747	for my $o (all_objects $pl->ob) {	2103	cf::sync_job { find $path, $origin }
748	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2104	}
749	$o->set_ob_key_value ("_perl_data");
750		2105
751	%$o = %{ Storable::thaw pack "H*", $value };	2106	sub do_load_sync {
		2107	my ($map) = @_;
		2108
		2109	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2110	if $Coro::current == $Coro::main;
		2111
		2112	cf::sync_job { $map->load };
		2113	}
		2114
		2115	our %MAP_PREFETCH;
		2116	our $MAP_PREFETCHER = undef;
		2117
		2118	sub find_async {
		2119	my ($path, $origin, $load) = @_;
		2120
		2121	$path = normalise $path, $origin && $origin->{path};
		2122
		2123	if (my $map = $cf::MAP{$path}) {
		2124	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2125	}
		2126
		2127	$MAP_PREFETCH{$path} |= $load;
		2128
		2129	$MAP_PREFETCHER ||= cf::async {
		2130	$Coro::current->{desc} = "map prefetcher";
		2131
		2132	while (%MAP_PREFETCH) {
		2133	while (my ($k, $v) = each %MAP_PREFETCH) {
		2134	if (my $map = find $k) {
		2135	$map->load if $v;
		2136	}
		2137
		2138	delete $MAP_PREFETCH{$k};
752	}	2139	}
753	}	2140	}
		2141	undef $MAP_PREFETCHER;
		2142	};
		2143	$MAP_PREFETCHER->prio (6);
		2144
		2145	()
		2146	}
		2147
		2148	sub save {
		2149	my ($self) = @_;
		2150
		2151	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2152
		2153	$self->{last_save} = $cf::RUNTIME;
		2154
		2155	return unless $self->dirty;
		2156
		2157	my $save = $self->save_path; utf8::encode $save;
		2158	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2159
		2160	$self->{load_path} = $save;
		2161
		2162	return if $self->{deny_save};
		2163
		2164	local $self->{last_access} = $self->last_access;#d#
		2165
		2166	cf::async {
		2167	$Coro::current->{desc} = "map player save";
		2168	$_->contr->save for $self->players;
		2169	};
		2170
		2171	cf::get_slot 0.02;
		2172
		2173	if ($uniq) {
		2174	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2175	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2176	} else {
		2177	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
754	},	2178	}
755	);	2179	}
756		2180
757	#############################################################################	2181	sub swap_out {
		2182	my ($self) = @_;
758		2183
759	=head2 CORE EXTENSIONS	2184	# save first because save cedes
		2185	$self->save;
760		2186
761	Functions and methods that extend core crossfire objects.	2187	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2188
		2189	return if $self->players;
		2190	return if $self->in_memory != cf::MAP_ACTIVE;
		2191	return if $self->{deny_save};
		2192
		2193	$self->in_memory (cf::MAP_SWAPPED);
		2194
		2195	$self->deactivate;
		2196	$_->clear_links_to ($self) for values %cf::MAP;
		2197	$self->clear;
		2198	}
		2199
		2200	sub reset_at {
		2201	my ($self) = @_;
		2202
		2203	# TODO: safety, remove and allow resettable per-player maps
		2204	return 1e99 if $self->{deny_reset};
		2205
		2206	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2207	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2208
		2209	$time + $to
		2210	}
		2211
		2212	sub should_reset {
		2213	my ($self) = @_;
		2214
		2215	$self->reset_at <= $cf::RUNTIME
		2216	}
		2217
		2218	sub reset {
		2219	my ($self) = @_;
		2220
		2221	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2222
		2223	return if $self->players;
		2224
		2225	warn "resetting map ", $self->path;
		2226
		2227	$self->in_memory (cf::MAP_SWAPPED);
		2228
		2229	# need to save uniques path
		2230	unless ($self->{deny_save}) {
		2231	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2232
		2233	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2234	if $uniq;
		2235	}
		2236
		2237	delete $cf::MAP{$self->path};
		2238
		2239	$self->deactivate;
		2240	$_->clear_links_to ($self) for values %cf::MAP;
		2241	$self->clear;
		2242
		2243	$self->unlink_save;
		2244	$self->destroy;
		2245	}
		2246
		2247	my $nuke_counter = "aaaa";
		2248
		2249	sub nuke {
		2250	my ($self) = @_;
		2251
		2252	{
		2253	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2254
		2255	delete $cf::MAP{$self->path};
		2256
		2257	$self->unlink_save;
		2258
		2259	bless $self, "cf::map";
		2260	delete $self->{deny_reset};
		2261	$self->{deny_save} = 1;
		2262	$self->reset_timeout (1);
		2263	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2264
		2265	$cf::MAP{$self->path} = $self;
		2266	}
		2267
		2268	$self->reset; # polite request, might not happen
		2269	}
		2270
		2271	=item $maps = cf::map::tmp_maps
		2272
		2273	Returns an arrayref with all map paths of currently instantiated and saved
		2274	maps. May block.
		2275
		2276	=cut
		2277
		2278	sub tmp_maps() {
		2279	[
		2280	map {
		2281	utf8::decode $_;
		2282	/\.map$/
		2283	? normalise $_
		2284	: ()
		2285	} @{ aio_readdir $TMPDIR or [] }
		2286	]
		2287	}
		2288
		2289	=item $maps = cf::map::random_maps
		2290
		2291	Returns an arrayref with all map paths of currently instantiated and saved
		2292	random maps. May block.
		2293
		2294	=cut
		2295
		2296	sub random_maps() {
		2297	[
		2298	map {
		2299	utf8::decode $_;
		2300	/\.map$/
		2301	? normalise "?random/$_"
		2302	: ()
		2303	} @{ aio_readdir $RANDOMDIR or [] }
		2304	]
		2305	}
		2306
		2307	=item cf::map::unique_maps
		2308
		2309	Returns an arrayref of paths of all shared maps that have
		2310	instantiated unique items. May block.
		2311
		2312	=cut
		2313
		2314	sub unique_maps() {
		2315	[
		2316	map {
		2317	utf8::decode $_;
		2318	s/\.map$//; # TODO future compatibility hack
		2319	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2320	? ()
		2321	: normalise $_
		2322	} @{ aio_readdir $UNIQUEDIR or [] }
		2323	]
		2324	}
		2325
		2326	=back
		2327
		2328	=head3 cf::object
		2329
		2330	=cut
		2331
		2332	package cf::object;
762		2333
763	=over 4	2334	=over 4
764		2335
765	=item cf::player::exists $login	2336	=item $ob->inv_recursive
766		2337
767	Returns true when the given account exists.	2338	Returns the inventory of the object I<and> their inventories, recursively,
		2339	but I<not> the object itself.
768		2340
769	=cut	2341	=cut
770		2342
771	sub cf::player::exists($) {	2343	sub inv_recursive_;
772	cf::player::find $_[0]	2344	sub inv_recursive_ {
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2345	map { $_, inv_recursive_ $_->inv } @_
774	}	2346	}
		2347
		2348	sub inv_recursive {
		2349	inv_recursive_ inv $_[0]
		2350	}
		2351
		2352	=item $ref = $ob->ref
		2353
		2354	Creates and returns a persistent reference to an object that can be stored as a string.
		2355
		2356	=item $ob = cf::object::deref ($refstring)
		2357
		2358	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2359	even if the object actually exists. May block.
		2360
		2361	=cut
		2362
		2363	sub deref {
		2364	my ($ref) = @_;
		2365
		2366	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2367	my ($uuid, $name) = ($1, $2);
		2368	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2369	or return;
		2370	$pl->ob->uuid eq $uuid
		2371	or return;
		2372
		2373	$pl->ob
		2374	} else {
		2375	warn "$ref: cannot resolve object reference\n";
		2376	undef
		2377	}
		2378	}
		2379
		2380	package cf;
		2381
		2382	=back
		2383
		2384	=head3 cf::object::player
		2385
		2386	=over 4
775		2387
776	=item $player_object->reply ($npc, $msg[, $flags])	2388	=item $player_object->reply ($npc, $msg[, $flags])
777		2389
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2390	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
779	can be C<undef>. Does the right thing when the player is currently in a	2391	can be C<undef>. Does the right thing when the player is currently in a
780	dialogue with the given NPC character.	2392	dialogue with the given NPC character.
781		2393
782	=cut	2394	=cut
783		2395
		2396	our $SAY_CHANNEL = {
		2397	id => "say",
		2398	title => "Map",
		2399	reply => "say ",
		2400	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2401	};
		2402
		2403	our $CHAT_CHANNEL = {
		2404	id => "chat",
		2405	title => "Chat",
		2406	reply => "chat ",
		2407	tooltip => "Player chat and shouts, global to the server.",
		2408	};
		2409
784	# rough implementation of a future "reply" method that works	2410	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	2411	# with dialog boxes.
		2412	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	2413	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	2414	my ($self, $npc, $msg, $flags) = @_;
788		2415
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2416	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		2417
791	if ($self->{record_replies}) {	2418	if ($self->{record_replies}) {
792	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2419	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2420
793	} else {	2421	} else {
		2422	my $pl = $self->contr;
		2423
		2424	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2425	my $dialog = $pl->{npc_dialog};
		2426	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2427
		2428	} else {
794	$msg = $npc->name . " says: $msg" if $npc;	2429	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	2430	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2431	}
796	}	2432	}
797	}	2433	}
798		2434
799	=item $player->ext_reply ($msgid, $msgtype, %msg)	2435	=item $object->send_msg ($channel, $msg, $color, [extra...])
800		2436
801	Sends an ext reply to the player.
802
803	=cut	2437	=cut
804		2438
805	sub cf::player::ext_reply($$$%) {	2439	sub cf::object::send_msg {
806	my ($self, $id, %msg) = @_;	2440	my $pl = shift->contr
807		2441	or return;
808	$msg{msgid} = $id;	2442	$pl->send_msg (@_);
809
810	$self->send ("ext " . to_json \%msg);
811	}	2443	}
812		2444
813	=item $player_object->may ("access")	2445	=item $player_object->may ("access")
814		2446
815	Returns wether the given player is authorized to access resource "access"	2447	Returns wether the given player is authorized to access resource "access"
…		…
824	(ref $cf::CFG{"may_$access"}	2456	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2457	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	2458	: $cf::CFG{"may_$access"})
827	}	2459	}
828		2460
829	=cut	2461	=item $player_object->enter_link
830		2462
831	#############################################################################	2463	Freezes the player and moves him/her to a special map (C<{link}>).
		2464
		2465	The player should be reasonably safe there for short amounts of time (e.g.
		2466	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2467	though, as the palyer cannot control the character while it is on the link
		2468	map.
		2469
		2470	Will never block.
		2471
		2472	=item $player_object->leave_link ($map, $x, $y)
		2473
		2474	Moves the player out of the special C<{link}> map onto the specified
		2475	map. If the map is not valid (or omitted), the player will be moved back
		2476	to the location he/she was before the call to C<enter_link>, or, if that
		2477	fails, to the emergency map position.
		2478
		2479	Might block.
		2480
		2481	=cut
		2482
		2483	sub link_map {
		2484	unless ($LINK_MAP) {
		2485	$LINK_MAP = cf::map::find "{link}"
		2486	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2487	$LINK_MAP->load;
		2488	}
		2489
		2490	$LINK_MAP
		2491	}
		2492
		2493	sub cf::object::player::enter_link {
		2494	my ($self) = @_;
		2495
		2496	$self->deactivate_recursive;
		2497
		2498	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2499
		2500	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2501	if $self->map && $self->map->{path} ne "{link}";
		2502
		2503	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2504	}
		2505
		2506	sub cf::object::player::leave_link {
		2507	my ($self, $map, $x, $y) = @_;
		2508
		2509	return unless $self->contr->active;
		2510
		2511	my $link_pos = delete $self->{_link_pos};
		2512
		2513	unless ($map) {
		2514	# restore original map position
		2515	($map, $x, $y) = @{ $link_pos || [] };
		2516	$map = cf::map::find $map;
		2517
		2518	unless ($map) {
		2519	($map, $x, $y) = @$EMERGENCY_POSITION;
		2520	$map = cf::map::find $map
		2521	or die "FATAL: cannot load emergency map\n";
		2522	}
		2523	}
		2524
		2525	($x, $y) = (-1, -1)
		2526	unless (defined $x) && (defined $y);
		2527
		2528	# use -1 or undef as default coordinates, not 0, 0
		2529	($x, $y) = ($map->enter_x, $map->enter_y)
		2530	if $x <=0 && $y <= 0;
		2531
		2532	$map->load;
		2533	$map->load_neighbours;
		2534
		2535	return unless $self->contr->active;
		2536
		2537	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2538	$self->enter_map ($map, $x, $y);
		2539
		2540	# only activate afterwards, to support waiting in hooks
		2541	$self->activate_recursive;
		2542	}
		2543
		2544	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2545
		2546	Moves the player to the given map-path and coordinates by first freezing
		2547	her, loading and preparing them map, calling the provided $check callback
		2548	that has to return the map if sucecssful, and then unfreezes the player on
		2549	the new (success) or old (failed) map position. In either case, $done will
		2550	be called at the end of this process.
		2551
		2552	Note that $check will be called with a potentially non-loaded map, so if
		2553	it needs a loaded map it has to call C<< ->load >>.
		2554
		2555	=cut
		2556
		2557	our $GOTOGEN;
		2558
		2559	sub cf::object::player::goto {
		2560	my ($self, $path, $x, $y, $check, $done) = @_;
		2561
		2562	# do generation counting so two concurrent goto's will be executed in-order
		2563	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2564
		2565	$self->enter_link;
		2566
		2567	(async {
		2568	$Coro::current->{desc} = "player::goto $path $x $y";
		2569
		2570	# *tag paths override both path and x|y
		2571	if ($path =~ /^\*(.*)$/) {
		2572	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2573	my $ob = $obs[rand @obs];
		2574
		2575	# see if we actually can go there
		2576	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2577	$ob = $obs[rand @obs];
		2578	} else {
		2579	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2580	}
		2581	# else put us there anyways for now #d#
		2582
		2583	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2584	} else {
		2585	($path, $x, $y) = (undef, undef, undef);
		2586	}
		2587	}
		2588
		2589	my $map = eval {
		2590	my $map = defined $path ? cf::map::find $path : undef;
		2591
		2592	if ($map) {
		2593	$map = $map->customise_for ($self);
		2594	$map = $check->($map) if $check && $map;
		2595	} else {
		2596	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2597	}
		2598
		2599	$map
		2600	};
		2601
		2602	if ($@) {
		2603	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2604	LOG llevError | logBacktrace, Carp::longmess $@;
		2605	}
		2606
		2607	if ($gen == $self->{_goto_generation}) {
		2608	delete $self->{_goto_generation};
		2609	$self->leave_link ($map, $x, $y);
		2610	}
		2611
		2612	$done->() if $done;
		2613	})->prio (1);
		2614	}
		2615
		2616	=item $player_object->enter_exit ($exit_object)
		2617
		2618	=cut
		2619
		2620	sub parse_random_map_params {
		2621	my ($spec) = @_;
		2622
		2623	my $rmp = { # defaults
		2624	xsize => (cf::rndm 15, 40),
		2625	ysize => (cf::rndm 15, 40),
		2626	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2627	#layout => string,
		2628	};
		2629
		2630	for (split /\n/, $spec) {
		2631	my ($k, $v) = split /\s+/, $_, 2;
		2632
		2633	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2634	}
		2635
		2636	$rmp
		2637	}
		2638
		2639	sub prepare_random_map {
		2640	my ($exit) = @_;
		2641
		2642	# all this does is basically replace the /! path by
		2643	# a new random map path (?random/...) with a seed
		2644	# that depends on the exit object
		2645
		2646	my $rmp = parse_random_map_params $exit->msg;
		2647
		2648	if ($exit->map) {
		2649	$rmp->{region} = $exit->region->name;
		2650	$rmp->{origin_map} = $exit->map->path;
		2651	$rmp->{origin_x} = $exit->x;
		2652	$rmp->{origin_y} = $exit->y;
		2653
		2654	$exit->map->touch;
		2655	}
		2656
		2657	$rmp->{random_seed} ||= $exit->random_seed;
		2658
		2659	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2660	my $md5 = Digest::MD5::md5_hex $data;
		2661	my $meta = "$RANDOMDIR/$md5.meta";
		2662
		2663	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2664	aio_write $fh, 0, (length $data), $data, 0;
		2665	undef $fh;
		2666	aio_rename "$meta~", $meta;
		2667
		2668	my $slaying = "?random/$md5";
		2669
		2670	if ($exit->valid) {
		2671	$exit->slaying ("?random/$md5");
		2672	$exit->msg (undef);
		2673	}
		2674	}
		2675	}
		2676
		2677	sub cf::object::player::enter_exit {
		2678	my ($self, $exit) = @_;
		2679
		2680	return unless $self->type == cf::PLAYER;
		2681
		2682	$self->enter_link;
		2683
		2684	(async {
		2685	$Coro::current->{desc} = "enter_exit";
		2686
		2687	unless (eval {
		2688	$self->deactivate_recursive; # just to be sure
		2689
		2690	# random map handling
		2691	{
		2692	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2693
		2694	prepare_random_map $exit
		2695	if $exit->slaying eq "/!";
		2696	}
		2697
		2698	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2699	my $x = $exit->stats->hp;
		2700	my $y = $exit->stats->sp;
		2701
		2702	$self->goto ($map, $x, $y);
		2703
		2704	# if exit is damned, update players death & WoR home-position
		2705	$self->contr->savebed ($map, $x, $y)
		2706	if $exit->flag (cf::FLAG_DAMNED);
		2707
		2708	1
		2709	}) {
		2710	$self->message ("Something went wrong deep within the deliantra server. "
		2711	. "I'll try to bring you back to the map you were before. "
		2712	. "Please report this to the dungeon master!",
		2713	cf::NDI_UNIQUE | cf::NDI_RED);
		2714
		2715	warn "ERROR in enter_exit: $@";
		2716	$self->leave_link;
		2717	}
		2718	})->prio (1);
		2719	}
		2720
		2721	=head3 cf::client
		2722
		2723	=over 4
		2724
		2725	=item $client->send_drawinfo ($text, $flags)
		2726
		2727	Sends a drawinfo packet to the client. Circumvents output buffering so
		2728	should not be used under normal circumstances.
		2729
		2730	=cut
		2731
		2732	sub cf::client::send_drawinfo {
		2733	my ($self, $text, $flags) = @_;
		2734
		2735	utf8::encode $text;
		2736	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2737	}
		2738
		2739	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2740
		2741	Send a drawinfo or msg packet to the client, formatting the msg for the
		2742	client if neccessary. C<$type> should be a string identifying the type of
		2743	the message, with C<log> being the default. If C<$color> is negative, suppress
		2744	the message unless the client supports the msg packet.
		2745
		2746	=cut
		2747
		2748	# non-persistent channels (usually the info channel)
		2749	our %CHANNEL = (
		2750	"c/identify" => {
		2751	id => "infobox",
		2752	title => "Identify",
		2753	reply => undef,
		2754	tooltip => "Items recently identified",
		2755	},
		2756	"c/examine" => {
		2757	id => "infobox",
		2758	title => "Examine",
		2759	reply => undef,
		2760	tooltip => "Signs and other items you examined",
		2761	},
		2762	"c/book" => {
		2763	id => "infobox",
		2764	title => "Book",
		2765	reply => undef,
		2766	tooltip => "The contents of a note or book",
		2767	},
		2768	"c/lookat" => {
		2769	id => "infobox",
		2770	title => "Look",
		2771	reply => undef,
		2772	tooltip => "What you saw there",
		2773	},
		2774	"c/who" => {
		2775	id => "infobox",
		2776	title => "Players",
		2777	reply => undef,
		2778	tooltip => "Shows players who are currently online",
		2779	},
		2780	"c/body" => {
		2781	id => "infobox",
		2782	title => "Body Parts",
		2783	reply => undef,
		2784	tooltip => "Shows which body parts you posess and are available",
		2785	},
		2786	"c/statistics" => {
		2787	id => "infobox",
		2788	title => "Statistics",
		2789	reply => undef,
		2790	tooltip => "Shows your primary statistics",
		2791	},
		2792	"c/skills" => {
		2793	id => "infobox",
		2794	title => "Skills",
		2795	reply => undef,
		2796	tooltip => "Shows your experience per skill and item power",
		2797	},
		2798	"c/shopitems" => {
		2799	id => "infobox",
		2800	title => "Shop Items",
		2801	reply => undef,
		2802	tooltip => "Shows the items currently for sale in this shop",
		2803	},
		2804	"c/resistances" => {
		2805	id => "infobox",
		2806	title => "Resistances",
		2807	reply => undef,
		2808	tooltip => "Shows your resistances",
		2809	},
		2810	"c/pets" => {
		2811	id => "infobox",
		2812	title => "Pets",
		2813	reply => undef,
		2814	tooltip => "Shows information abotu your pets/a specific pet",
		2815	},
		2816	"c/perceiveself" => {
		2817	id => "infobox",
		2818	title => "Perceive Self",
		2819	reply => undef,
		2820	tooltip => "You gained detailed knowledge about yourself",
		2821	},
		2822	"c/uptime" => {
		2823	id => "infobox",
		2824	title => "Uptime",
		2825	reply => undef,
		2826	tooltip => "How long the server has been running since last restart",
		2827	},
		2828	"c/mapinfo" => {
		2829	id => "infobox",
		2830	title => "Map Info",
		2831	reply => undef,
		2832	tooltip => "Information related to the maps",
		2833	},
		2834	"c/party" => {
		2835	id => "party",
		2836	title => "Party",
		2837	reply => "gsay ",
		2838	tooltip => "Messages and chat related to your party",
		2839	},
		2840	"c/death" => {
		2841	id => "death",
		2842	title => "Death",
		2843	reply => undef,
		2844	tooltip => "Reason for and more info about your most recent death",
		2845	},
		2846	"c/say" => $SAY_CHANNEL,
		2847	"c/chat" => $CHAT_CHANNEL,
		2848	);
		2849
		2850	sub cf::client::send_msg {
		2851	my ($self, $channel, $msg, $color, @extra) = @_;
		2852
		2853	$msg = $self->pl->expand_cfpod ($msg)
		2854	unless $color & cf::NDI_VERBATIM;
		2855
		2856	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2857
		2858	# check predefined channels, for the benefit of C
		2859	if ($CHANNEL{$channel}) {
		2860	$channel = $CHANNEL{$channel};
		2861
		2862	$self->ext_msg (channel_info => $channel);
		2863	$channel = $channel->{id};
		2864
		2865	} elsif (ref $channel) {
		2866	# send meta info to client, if not yet sent
		2867	unless (exists $self->{channel}{$channel->{id}}) {
		2868	$self->{channel}{$channel->{id}} = $channel;
		2869	$self->ext_msg (channel_info => $channel);
		2870	}
		2871
		2872	$channel = $channel->{id};
		2873	}
		2874
		2875	return unless @extra || length $msg;
		2876
		2877	# default colour, mask it out
		2878	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2879	if $color & cf::NDI_DEF;
		2880
		2881	my $pkt = "msg "
		2882	. $self->{json_coder}->encode (
		2883	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2884	);
		2885
		2886	# try lzf for large packets
		2887	$pkt = "lzf " . Compress::LZF::compress $pkt
		2888	if 1024 <= length $pkt and $self->{can_lzf};
		2889
		2890	# split very large packets
		2891	if (8192 < length $pkt and $self->{can_lzf}) {
		2892	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2893	$pkt = "frag";
		2894	}
		2895
		2896	$self->send_packet ($pkt);
		2897	}
		2898
		2899	=item $client->ext_msg ($type, @msg)
		2900
		2901	Sends an ext event to the client.
		2902
		2903	=cut
		2904
		2905	sub cf::client::ext_msg($$@) {
		2906	my ($self, $type, @msg) = @_;
		2907
		2908	if ($self->extcmd == 2) {
		2909	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2910	} elsif ($self->extcmd == 1) { # TODO: remove
		2911	push @msg, msgtype => "event_$type";
		2912	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2913	}
		2914	}
		2915
		2916	=item $client->ext_reply ($msgid, @msg)
		2917
		2918	Sends an ext reply to the client.
		2919
		2920	=cut
		2921
		2922	sub cf::client::ext_reply($$@) {
		2923	my ($self, $id, @msg) = @_;
		2924
		2925	if ($self->extcmd == 2) {
		2926	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2927	} elsif ($self->extcmd == 1) {
		2928	#TODO: version 1, remove
		2929	unshift @msg, msgtype => "reply", msgid => $id;
		2930	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2931	}
		2932	}
		2933
		2934	=item $success = $client->query ($flags, "text", \&cb)
		2935
		2936	Queues a query to the client, calling the given callback with
		2937	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2938	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2939
		2940	Queries can fail, so check the return code. Or don't, as queries will
		2941	become reliable at some point in the future.
		2942
		2943	=cut
		2944
		2945	sub cf::client::query {
		2946	my ($self, $flags, $text, $cb) = @_;
		2947
		2948	return unless $self->state == ST_PLAYING
		2949	|| $self->state == ST_SETUP
		2950	|| $self->state == ST_CUSTOM;
		2951
		2952	$self->state (ST_CUSTOM);
		2953
		2954	utf8::encode $text;
		2955	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2956
		2957	$self->send_packet ($self->{query_queue}[0][0])
		2958	if @{ $self->{query_queue} } == 1;
		2959
		2960	1
		2961	}
		2962
		2963	cf::client->attach (
		2964	on_connect => sub {
		2965	my ($ns) = @_;
		2966
		2967	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2968	},
		2969	on_reply => sub {
		2970	my ($ns, $msg) = @_;
		2971
		2972	# this weird shuffling is so that direct followup queries
		2973	# get handled first
		2974	my $queue = delete $ns->{query_queue}
		2975	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2976
		2977	(shift @$queue)->[1]->($msg);
		2978	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2979
		2980	push @{ $ns->{query_queue} }, @$queue;
		2981
		2982	if (@{ $ns->{query_queue} } == @$queue) {
		2983	if (@$queue) {
		2984	$ns->send_packet ($ns->{query_queue}[0][0]);
		2985	} else {
		2986	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2987	}
		2988	}
		2989	},
		2990	on_exticmd => sub {
		2991	my ($ns, $buf) = @_;
		2992
		2993	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2994
		2995	if (ref $msg) {
		2996	my ($type, $reply, @payload) =
		2997	"ARRAY" eq ref $msg
		2998	? @$msg
		2999	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3000
		3001	my @reply;
		3002
		3003	if (my $cb = $EXTICMD{$type}) {
		3004	@reply = $cb->($ns, @payload);
		3005	}
		3006
		3007	$ns->ext_reply ($reply, @reply)
		3008	if $reply;
		3009
		3010	} else {
		3011	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3012	}
		3013
		3014	cf::override;
		3015	},
		3016	);
		3017
		3018	=item $client->async (\&cb)
		3019
		3020	Create a new coroutine, running the specified callback. The coroutine will
		3021	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3022	or loss of connection).
		3023
		3024	=cut
		3025
		3026	sub cf::client::async {
		3027	my ($self, $cb) = @_;
		3028
		3029	my $coro = &Coro::async ($cb);
		3030
		3031	$coro->on_destroy (sub {
		3032	delete $self->{_coro}{$coro+0};
		3033	});
		3034
		3035	$self->{_coro}{$coro+0} = $coro;
		3036
		3037	$coro
		3038	}
		3039
		3040	cf::client->attach (
		3041	on_destroy => sub {
		3042	my ($ns) = @_;
		3043
		3044	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3045	},
		3046	);
		3047
		3048	=back
		3049
832		3050
833	=head2 SAFE SCRIPTING	3051	=head2 SAFE SCRIPTING
834		3052
835	Functions that provide a safe environment to compile and execute	3053	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	3054	snippets of perl code without them endangering the safety of the server
…		…
843	our $safe = new Safe "safe";	3061	our $safe = new Safe "safe";
844	our $safe_hole = new Safe::Hole;	3062	our $safe_hole = new Safe::Hole;
845		3063
846	$SIG{FPE} = 'IGNORE';	3064	$SIG{FPE} = 'IGNORE';
847		3065
848	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3066	$safe->permit_only (Opcode::opset qw(
		3067	:base_core :base_mem :base_orig :base_math
		3068	grepstart grepwhile mapstart mapwhile
		3069	sort time
		3070	));
849		3071
850	# here we export the classes and methods available to script code	3072	# here we export the classes and methods available to script code
851		3073
852	=pod	3074	=pod
853		3075
854	The following fucntions and emthods are available within a safe environment:	3076	The following functions and methods are available within a safe environment:
855		3077
856	cf::object contr pay_amount pay_player map	3078	cf::object
		3079	contr pay_amount pay_player map x y force_find force_add destroy
		3080	insert remove name archname title slaying race decrease split
		3081	value
		3082
857	cf::object::player player	3083	cf::object::player
858	cf::player peaceful	3084	player
859	cf::map trigger	3085
		3086	cf::player
		3087	peaceful
		3088
		3089	cf::map
		3090	trigger
860		3091
861	=cut	3092	=cut
862		3093
863	for (	3094	for (
864	["cf::object" => qw(contr pay_amount pay_player map)],	3095	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3096	insert remove inv nrof name archname title slaying race
		3097	decrease split destroy change_exp value msg lore send_msg)],
865	["cf::object::player" => qw(player)],	3098	["cf::object::player" => qw(player)],
866	["cf::player" => qw(peaceful)],	3099	["cf::player" => qw(peaceful send_msg)],
867	["cf::map" => qw(trigger)],	3100	["cf::map" => qw(trigger)],
868	) {	3101	) {
869	no strict 'refs';	3102	no strict 'refs';
870	my ($pkg, @funs) = @$_;	3103	my ($pkg, @funs) = @$_;
871	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3104	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
…		…
888	my ($code, %vars) = @_;	3121	my ($code, %vars) = @_;
889		3122
890	my $qcode = $code;	3123	my $qcode = $code;
891	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3124	$qcode =~ s/"/‟/g; # not allowed in #line filenames
892	$qcode =~ s/\n/\\n/g;	3125	$qcode =~ s/\n/\\n/g;
		3126
		3127	%vars = (_dummy => 0) unless %vars;
893		3128
894	local $_;	3129	local $_;
895	local @safe::cf::_safe_eval_args = values %vars;	3130	local @safe::cf::_safe_eval_args = values %vars;
896		3131
897	my $eval =	3132	my $eval =
…		…
940	=back	3175	=back
941		3176
942	=cut	3177	=cut
943		3178
944	#############################################################################	3179	#############################################################################
		3180	# the server's init and main functions
945		3181
946	=head2 EXTENSION DATABASE SUPPORT	3182	sub load_facedata($) {
		3183	my ($path) = @_;
947		3184
948	Crossfire maintains a very simple database for extension use. It can	3185	# HACK to clear player env face cache, we need some signal framework
949	currently store anything that can be serialised using Storable, which	3186	# for this (global event?)
950	excludes objects.	3187	%ext::player_env::MUSIC_FACE_CACHE = ();
951		3188
952	The parameter C<$family> should best start with the name of the extension	3189	my $enc = JSON::XS->new->utf8->canonical->relaxed;
953	using it, it should be unique.
954		3190
955	=over 4	3191	warn "loading facedata from $path\n";
956		3192
957	=item $hashref = cf::db_get $family	3193	my $facedata;
		3194	0 < aio_load $path, $facedata
		3195	or die "$path: $!";
958		3196
959	Return a hashref for use by the extension C<$family>, which can be	3197	$facedata = Coro::Storable::thaw $facedata;
960	modified. After modifications, you have to call C<cf::db_dirty> or
961	C<cf::db_sync>.
962		3198
963	=item $value = cf::db_get $family => $key	3199	$facedata->{version} == 2
		3200	or cf::cleanup "$path: version mismatch, cannot proceed.";
964		3201
965	Returns a single value from the database	3202	# patch in the exptable
		3203	$facedata->{resource}{"res/exp_table"} = {
		3204	type => FT_RSRC,
		3205	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3206	};
		3207	cf::cede_to_tick;
966		3208
967	=item cf::db_put $family => $hashref	3209	{
		3210	my $faces = $facedata->{faceinfo};
968		3211
969	Stores the given family hashref into the database. Updates are delayed, if	3212	while (my ($face, $info) = each %$faces) {
970	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3213	my $idx = (cf::face::find $face) || cf::face::alloc $face;
971		3214
972	=item cf::db_put $family => $key => $value	3215	cf::face::set_visibility $idx, $info->{visibility};
		3216	cf::face::set_magicmap $idx, $info->{magicmap};
		3217	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3218	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
973		3219
974	Stores the given C<$value> in the family hash. Updates are delayed, if you	3220	cf::cede_to_tick;
975	want the data to be synced to disk immediately, use C<cf::db_sync>.	3221	}
976		3222
977	=item cf::db_dirty	3223	while (my ($face, $info) = each %$faces) {
		3224	next unless $info->{smooth};
978		3225
979	Marks the database as dirty, to be updated at a later time.	3226	my $idx = cf::face::find $face
		3227	or next;
980		3228
981	=item cf::db_sync	3229	if (my $smooth = cf::face::find $info->{smooth}) {
		3230	cf::face::set_smooth $idx, $smooth;
		3231	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3232	} else {
		3233	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3234	}
982		3235
983	Immediately write the database to disk I<if it is dirty>.	3236	cf::cede_to_tick;
		3237	}
		3238	}
984		3239
985	=cut	3240	{
		3241	my $anims = $facedata->{animinfo};
986		3242
987	our $DB;	3243	while (my ($anim, $info) = each %$anims) {
		3244	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3245	cf::cede_to_tick;
		3246	}
		3247
		3248	cf::anim::invalidate_all; # d'oh
		3249	}
		3250
		3251	{
		3252	# TODO: for gcfclient pleasure, we should give resources
		3253	# that gcfclient doesn't grok a >10000 face index.
		3254	my $res = $facedata->{resource};
		3255
		3256	while (my ($name, $info) = each %$res) {
		3257	if (defined $info->{type}) {
		3258	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3259	my $data;
		3260
		3261	if ($info->{type} & 1) {
		3262	# prepend meta info
		3263
		3264	my $meta = $enc->encode ({
		3265	name => $name,
		3266	%{ $info->{meta} || {} },
		3267	});
		3268
		3269	$data = pack "(w/a*)*", $meta, $info->{data};
		3270	} else {
		3271	$data = $info->{data};
		3272	}
		3273
		3274	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3275	cf::face::set_type $idx, $info->{type};
		3276	} else {
		3277	$RESOURCE{$name} = $info;
		3278	}
		3279
		3280	cf::cede_to_tick;
		3281	}
		3282	}
		3283
		3284	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3285
		3286	1
		3287	}
		3288
		3289	cf::global->attach (on_resource_update => sub {
		3290	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3291	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3292
		3293	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3294	my $sound = $soundconf->{compat}[$_]
		3295	or next;
		3296
		3297	my $face = cf::face::find "sound/$sound->[1]";
		3298	cf::sound::set $sound->[0] => $face;
		3299	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3300	}
		3301
		3302	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3303	my $face = cf::face::find "sound/$v";
		3304	cf::sound::set $k => $face;
		3305	}
		3306	}
		3307	});
		3308
		3309	register_exticmd fx_want => sub {
		3310	my ($ns, $want) = @_;
		3311
		3312	while (my ($k, $v) = each %$want) {
		3313	$ns->fx_want ($k, $v);
		3314	}
		3315	};
		3316
		3317	sub load_resource_file($) {
		3318	my $guard = lock_acquire "load_resource_file";
		3319
		3320	my $status = load_resource_file_ $_[0];
		3321	get_slot 0.1, 100;
		3322	cf::arch::commit_load;
		3323
		3324	$status
		3325	}
		3326
		3327	sub reload_regions {
		3328	# HACK to clear player env face cache, we need some signal framework
		3329	# for this (global event?)
		3330	%ext::player_env::MUSIC_FACE_CACHE = ();
		3331
		3332	load_resource_file "$MAPDIR/regions"
		3333	or die "unable to load regions file\n";
		3334
		3335	for (cf::region::list) {
		3336	$_->{match} = qr/$_->{match}/
		3337	if exists $_->{match};
		3338	}
		3339	}
		3340
		3341	sub reload_facedata {
		3342	load_facedata "$DATADIR/facedata"
		3343	or die "unable to load facedata\n";
		3344	}
		3345
		3346	sub reload_archetypes {
		3347	load_resource_file "$DATADIR/archetypes"
		3348	or die "unable to load archetypes\n";
		3349	}
		3350
		3351	sub reload_treasures {
		3352	load_resource_file "$DATADIR/treasures"
		3353	or die "unable to load treasurelists\n";
		3354	}
		3355
		3356	sub reload_resources {
		3357	warn "reloading resource files...\n";
		3358
		3359	reload_facedata;
		3360	reload_archetypes;
		3361	reload_regions;
		3362	reload_treasures;
		3363
		3364	warn "finished reloading resource files\n";
		3365	}
		3366
		3367	sub reload_config {
		3368	open my $fh, "<:utf8", "$CONFDIR/config"
		3369	or return;
		3370
		3371	local $/;
		3372	*CFG = YAML::Load <$fh>;
		3373
		3374	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3375
		3376	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3377	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3378
		3379	if (exists $CFG{mlockall}) {
		3380	eval {
		3381	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3382	and die "WARNING: m(un)lockall failed: $!\n";
		3383	};
		3384	warn $@ if $@;
		3385	}
		3386	}
		3387
		3388	sub pidfile() {
		3389	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3390	or die "$PIDFILE: $!";
		3391	flock $fh, &Fcntl::LOCK_EX
		3392	or die "$PIDFILE: flock: $!";
		3393	$fh
		3394	}
		3395
		3396	# make sure only one server instance is running at any one time
		3397	sub atomic {
		3398	my $fh = pidfile;
		3399
		3400	my $pid = <$fh>;
		3401	kill 9, $pid if $pid > 0;
		3402
		3403	seek $fh, 0, 0;
		3404	print $fh $$;
		3405	}
		3406
		3407	sub main_loop {
		3408	warn "EV::loop starting\n";
		3409	if (1) {
		3410	EV::loop;
		3411	}
		3412	warn "EV::loop returned\n";
		3413	goto &main_loop unless $REALLY_UNLOOP;
		3414	}
		3415
		3416	sub main {
		3417	cf::init_globals; # initialise logging
		3418
		3419	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3420	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3421	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3422	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3423
		3424	cf::init_experience;
		3425	cf::init_anim;
		3426	cf::init_attackmess;
		3427	cf::init_dynamic;
		3428
		3429	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3430
		3431	# we must not ever block the main coroutine
		3432	local $Coro::idle = sub {
		3433	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3434	(async {
		3435	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3436	EV::loop EV::LOOP_ONESHOT;
		3437	})->prio (Coro::PRIO_MAX);
		3438	};
		3439
		3440	evthread_start IO::AIO::poll_fileno;
		3441
		3442	cf::sync_job {
		3443	reload_resources;
		3444	reload_config;
		3445	db_init;
		3446
		3447	cf::load_settings;
		3448	cf::load_materials;
		3449	cf::init_uuid;
		3450	cf::init_signals;
		3451	cf::init_commands;
		3452	cf::init_skills;
		3453
		3454	cf::init_beforeplay;
		3455
		3456	atomic;
		3457
		3458	load_extensions;
		3459
		3460	utime time, time, $RUNTIMEFILE;
		3461
		3462	# no (long-running) fork's whatsoever before this point(!)
		3463	use POSIX ();
		3464	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3465
		3466	(pop @POST_INIT)->(0) while @POST_INIT;
		3467	};
		3468
		3469	main_loop;
		3470	}
		3471
		3472	#############################################################################
		3473	# initialisation and cleanup
		3474
		3475	# install some emergency cleanup handlers
		3476	BEGIN {
		3477	our %SIGWATCHER = ();
		3478	for my $signal (qw(INT HUP TERM)) {
		3479	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3480	cf::cleanup "SIG$signal";
		3481	};
		3482	}
		3483	}
		3484
		3485	sub write_runtime_sync {
		3486	# first touch the runtime file to show we are still running:
		3487	# the fsync below can take a very very long time.
		3488
		3489	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3490
		3491	my $guard = cf::lock_acquire "write_runtime";
		3492
		3493	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3494	or return;
		3495
		3496	my $value = $cf::RUNTIME + 90 + 10;
		3497	# 10 is the runtime save interval, for a monotonic clock
		3498	# 60 allows for the watchdog to kill the server.
		3499
		3500	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3501	and return;
		3502
		3503	# always fsync - this file is important
		3504	aio_fsync $fh
		3505	and return;
		3506
		3507	# touch it again to show we are up-to-date
		3508	aio_utime $fh, undef, undef;
		3509
		3510	close $fh
		3511	or return;
		3512
		3513	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3514	and return;
		3515
		3516	warn "runtime file written.\n";
		3517
		3518	1
		3519	}
		3520
		3521	our $uuid_lock;
		3522	our $uuid_skip;
		3523
		3524	sub write_uuid_sync($) {
		3525	$uuid_skip ||= $_[0];
		3526
		3527	return if $uuid_lock;
		3528	local $uuid_lock = 1;
		3529
		3530	my $uuid = "$LOCALDIR/uuid";
		3531
		3532	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3533	or return;
		3534
		3535	my $value = uuid_seq uuid_cur;
		3536
		3537	unless ($value) {
		3538	warn "cowardly refusing to write zero uuid value!\n";
		3539	return;
		3540	}
		3541
		3542	my $value = uuid_str $value + $uuid_skip;
		3543	$uuid_skip = 0;
		3544
		3545	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3546	and return;
		3547
		3548	# always fsync - this file is important
		3549	aio_fsync $fh
		3550	and return;
		3551
		3552	close $fh
		3553	or return;
		3554
		3555	aio_rename "$uuid~", $uuid
		3556	and return;
		3557
		3558	warn "uuid file written ($value).\n";
		3559
		3560	1
		3561
		3562	}
		3563
		3564	sub write_uuid($$) {
		3565	my ($skip, $sync) = @_;
		3566
		3567	$sync ? write_uuid_sync $skip
		3568	: async { write_uuid_sync $skip };
		3569	}
		3570
		3571	sub emergency_save() {
		3572	my $freeze_guard = cf::freeze_mainloop;
		3573
		3574	warn "emergency_perl_save: enter\n";
		3575
		3576	cf::sync_job {
		3577	# this is a trade-off: we want to be very quick here, so
		3578	# save all maps without fsync, and later call a global sync
		3579	# (which in turn might be very very slow)
		3580	local $USE_FSYNC = 0;
		3581
		3582	# use a peculiar iteration method to avoid tripping on perl
		3583	# refcount bugs in for. also avoids problems with players
		3584	# and maps saved/destroyed asynchronously.
		3585	warn "emergency_perl_save: begin player save\n";
		3586	for my $login (keys %cf::PLAYER) {
		3587	my $pl = $cf::PLAYER{$login} or next;
		3588	$pl->valid or next;
		3589	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3590	$pl->save;
		3591	}
		3592	warn "emergency_perl_save: end player save\n";
		3593
		3594	warn "emergency_perl_save: begin map save\n";
		3595	for my $path (keys %cf::MAP) {
		3596	my $map = $cf::MAP{$path} or next;
		3597	$map->valid or next;
		3598	$map->save;
		3599	}
		3600	warn "emergency_perl_save: end map save\n";
		3601
		3602	warn "emergency_perl_save: begin database checkpoint\n";
		3603	BDB::db_env_txn_checkpoint $DB_ENV;
		3604	warn "emergency_perl_save: end database checkpoint\n";
		3605
		3606	warn "emergency_perl_save: begin write uuid\n";
		3607	write_uuid_sync 1;
		3608	warn "emergency_perl_save: end write uuid\n";
		3609	};
		3610
		3611	warn "emergency_perl_save: starting sync()\n";
		3612	IO::AIO::aio_sync sub {
		3613	warn "emergency_perl_save: finished sync()\n";
		3614	};
		3615
		3616	warn "emergency_perl_save: leave\n";
		3617	}
		3618
		3619	sub post_cleanup {
		3620	my ($make_core) = @_;
		3621
		3622	warn Carp::longmess "post_cleanup backtrace"
		3623	if $make_core;
		3624
		3625	my $fh = pidfile;
		3626	unlink $PIDFILE if <$fh> == $$;
		3627	}
		3628
		3629	# a safer delete_package, copied from Symbol
		3630	sub clear_package($) {
		3631	my $pkg = shift;
		3632
		3633	# expand to full symbol table name if needed
		3634	unless ($pkg =~ /^main::.*::$/) {
		3635	$pkg = "main$pkg" if $pkg =~ /^::/;
		3636	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3637	$pkg .= '::' unless $pkg =~ /::$/;
		3638	}
		3639
		3640	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3641	my $stem_symtab = *{$stem}{HASH};
		3642
		3643	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3644	or return;
		3645
		3646	# clear all symbols
		3647	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3648	for my $name (keys %$leaf_symtab) {
		3649	_gv_clear *{"$pkg$name"};
		3650	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3651	}
		3652	warn "cleared package $pkg\n";#d#
		3653	}
		3654
		3655	sub do_reload_perl() {
		3656	# can/must only be called in main
		3657	if ($Coro::current != $Coro::main) {
		3658	warn "can only reload from main coroutine";
		3659	return;
		3660	}
		3661
		3662	return if $RELOAD++;
		3663
		3664	my $t1 = EV::time;
		3665
		3666	while ($RELOAD) {
		3667	warn "reloading...";
		3668
		3669	warn "entering sync_job";
		3670
		3671	cf::sync_job {
		3672	cf::write_runtime_sync; # external watchdog should not bark
		3673	cf::emergency_save;
		3674	cf::write_runtime_sync; # external watchdog should not bark
		3675
		3676	warn "syncing database to disk";
		3677	BDB::db_env_txn_checkpoint $DB_ENV;
		3678
		3679	# if anything goes wrong in here, we should simply crash as we already saved
		3680
		3681	warn "flushing outstanding aio requests";
		3682	while (IO::AIO::nreqs || BDB::nreqs) {
		3683	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3684	}
		3685
		3686	warn "cancelling all extension coros";
		3687	$_->cancel for values %EXT_CORO;
		3688	%EXT_CORO = ();
		3689
		3690	warn "removing commands";
		3691	%COMMAND = ();
		3692
		3693	warn "removing ext/exti commands";
		3694	%EXTCMD = ();
		3695	%EXTICMD = ();
		3696
		3697	warn "unloading/nuking all extensions";
		3698	for my $pkg (@EXTS) {
		3699	warn "... unloading $pkg";
		3700
		3701	if (my $cb = $pkg->can ("unload")) {
		3702	eval {
		3703	$cb->($pkg);
		3704	1
		3705	} or warn "$pkg unloaded, but with errors: $@";
		3706	}
		3707
		3708	warn "... clearing $pkg";
		3709	clear_package $pkg;
		3710	}
		3711
		3712	warn "unloading all perl modules loaded from $LIBDIR";
		3713	while (my ($k, $v) = each %INC) {
		3714	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3715
		3716	warn "... unloading $k";
		3717	delete $INC{$k};
		3718
		3719	$k =~ s/\.pm$//;
		3720	$k =~ s/\//::/g;
		3721
		3722	if (my $cb = $k->can ("unload_module")) {
		3723	$cb->();
		3724	}
		3725
		3726	clear_package $k;
		3727	}
		3728
		3729	warn "getting rid of safe::, as good as possible";
		3730	clear_package "safe::$_"
		3731	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3732
		3733	warn "unloading cf.pm \"a bit\"";
		3734	delete $INC{"cf.pm"};
		3735	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		3736
		3737	# don't, removes xs symbols, too,
		3738	# and global variables created in xs
		3739	#clear_package __PACKAGE__;
		3740
		3741	warn "unload completed, starting to reload now";
		3742
		3743	warn "reloading cf.pm";
		3744	require cf;
		3745	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3746
		3747	warn "loading config and database again";
		3748	cf::reload_config;
		3749
		3750	warn "loading extensions";
		3751	cf::load_extensions;
		3752
		3753	if ($REATTACH_ON_RELOAD) {
		3754	warn "reattaching attachments to objects/players";
		3755	_global_reattach; # objects, sockets
		3756	warn "reattaching attachments to maps";
		3757	reattach $_ for values %MAP;
		3758	warn "reattaching attachments to players";
		3759	reattach $_ for values %PLAYER;
		3760	}
		3761
		3762	warn "running post_init jobs";
		3763	(pop @POST_INIT)->(1) while @POST_INIT;
		3764
		3765	warn "leaving sync_job";
		3766
		3767	1
		3768	} or do {
		3769	warn $@;
		3770	cf::cleanup "error while reloading, exiting.";
		3771	};
		3772
		3773	warn "reloaded";
		3774	--$RELOAD;
		3775	}
		3776
		3777	$t1 = EV::time - $t1;
		3778	warn "reload completed in ${t1}s\n";
		3779	};
		3780
		3781	our $RELOAD_WATCHER; # used only during reload
		3782
		3783	sub reload_perl() {
		3784	# doing reload synchronously and two reloads happen back-to-back,
		3785	# coro crashes during coro_state_free->destroy here.
		3786
		3787	$RELOAD_WATCHER ||= cf::async {
		3788	Coro::AIO::aio_wait cache_extensions;
		3789
		3790	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
		3791	do_reload_perl;
		3792	undef $RELOAD_WATCHER;
		3793	};
		3794	};
		3795	}
		3796
		3797	register_command "reload" => sub {
		3798	my ($who, $arg) = @_;
		3799
		3800	if ($who->flag (FLAG_WIZ)) {
		3801	$who->message ("reloading server.");
		3802	async {
		3803	$Coro::current->{desc} = "perl_reload";
		3804	reload_perl;
		3805	};
		3806	}
		3807	};
		3808
		3809	unshift @INC, $LIBDIR;
		3810
		3811	my $bug_warning = 0;
		3812
		3813	our @WAIT_FOR_TICK;
		3814	our @WAIT_FOR_TICK_BEGIN;
		3815
		3816	sub wait_for_tick {
		3817	return if tick_inhibit || $Coro::current == $Coro::main;
		3818
		3819	my $signal = new Coro::Signal;
		3820	push @WAIT_FOR_TICK, $signal;
		3821	$signal->wait;
		3822	}
		3823
		3824	sub wait_for_tick_begin {
		3825	return if tick_inhibit || $Coro::current == $Coro::main;
		3826
		3827	my $signal = new Coro::Signal;
		3828	push @WAIT_FOR_TICK_BEGIN, $signal;
		3829	$signal->wait;
		3830	}
		3831
		3832	sub tick {
		3833	if ($Coro::current != $Coro::main) {
		3834	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3835	unless ++$bug_warning > 10;
		3836	return;
		3837	}
		3838
		3839	cf::server_tick; # one server iteration
		3840
		3841	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3842	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3843	Coro::async_pool {
		3844	$Coro::current->{desc} = "runtime saver";
		3845	write_runtime_sync
		3846	or warn "ERROR: unable to write runtime file: $!";
		3847	};
		3848	}
		3849
		3850	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3851	$sig->send;
		3852	}
		3853	while (my $sig = shift @WAIT_FOR_TICK) {
		3854	$sig->send;
		3855	}
		3856
		3857	$LOAD = ($NOW - $TICK_START) / $TICK;
		3858	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3859
		3860	if (0) {
		3861	if ($NEXT_TICK) {
		3862	my $jitter = $TICK_START - $NEXT_TICK;
		3863	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3864	warn "jitter $JITTER\n";#d#
		3865	}
		3866	}
		3867	}
988		3868
989	{	3869	{
990	my $path = cf::localdir . "/database.pst";	3870	# configure BDB
991		3871
992	sub db_load() {	3872	BDB::min_parallel 8;
993	warn "loading database $path\n";#d# remove later	3873	BDB::max_poll_reqs $TICK * 0.1;
994	$DB = stat $path ? Storable::retrieve $path : { };	3874	$AnyEvent::BDB::WATCHER->priority (1);
995	}
996		3875
997	my $pid;	3876	unless ($DB_ENV) {
		3877	$DB_ENV = BDB::db_env_create;
		3878	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3879	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3880	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3881	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3882	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
998		3883
999	sub db_save() {	3884	cf::sync_job {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;
1006	cf::_exit 0 if defined $pid;
1007	}
1008	}
1009
1010	my $dirty;
1011
1012	sub db_sync() {
1013	db_save if $dirty;
1014	undef $dirty;
1015	}
1016
1017	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1018	db_sync;
1019	});
1020
1021	sub db_dirty() {
1022	$dirty = 1;
1023	$idle->start;
1024	}
1025
1026	sub db_get($;$) {
1027	@_ >= 2
1028	? $DB->{$_[0]}{$_[1]}
1029	: ($DB->{$_[0]} ||= { })
1030	}
1031
1032	sub db_put($$;$) {
1033	if (@_ >= 3) {
1034	$DB->{$_[0]}{$_[1]} = $_[2];
1035	} else {	3885	eval {
1036	$DB->{$_[0]} = $_[1];	3886	BDB::db_env_open
1037	}	3887	$DB_ENV,
1038	db_dirty;	3888	$BDBDIR,
1039	}	3889	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3890	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3891	0666;
1040		3892
1041	cf::global->attach (	3893	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1042	prio => 10000,
1043	on_cleanup => sub {
1044	db_sync;
1045	},
1046	);
1047	}
1048
1049	#############################################################################
1050	# the server's main()
1051
1052	sub cfg_load {
1053	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;
1055
1056	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;
1058	}
1059
1060	sub main {
1061	cfg_load;
1062	db_load;
1063	load_extensions;
1064	Event::loop;
1065	}
1066
1067	#############################################################################
1068	# initialisation
1069
1070	sub _perl_reload(&) {
1071	my ($msg) = @_;
1072
1073	$msg->("reloading...");
1074
1075	eval {
1076	# cancel all watchers
1077	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}
1080
1081	# unload all extensions
1082	for (@exts) {
1083	$msg->("unloading <$_>");
1084	unload_extension $_;
1085	}
1086
1087	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090
1091	$msg->("removing <$k>");
1092	delete $INC{$k};
1093
1094	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;
1096
1097	if (my $cb = $k->can ("unload_module")) {
1098	$cb->();
1099	}	3894	};
1100		3895
1101	Symbol::delete_package $k;	3896	cf::cleanup "db_env_open(db): $@" if $@;
1102	}	3897	};
		3898	}
1103		3899
1104	# sync database to disk	3900	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1105	cf::db_sync;	3901	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1106
1107	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1110
1111	# remove register_script_function callbacks
1112	# TODO
1113
1114	# unload cf.pm "a bit"
1115	delete $INC{"cf.pm"};
1116
1117	# don't, removes xs symbols, too,
1118	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;
1120
1121	# reload cf.pm
1122	$msg->("reloading cf.pm");
1123	require cf;
1124
1125	# load config and database again
1126	cf::cfg_load;
1127	cf::db_load;
1128
1129	# load extensions
1130	$msg->("load extensions");
1131	cf::load_extensions;
1132
1133	# reattach attachments to objects
1134	$msg->("reattach");
1135	_global_reattach;
1136	};	3902	};
1137	$msg->($@) if $@;	3903	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1138		3904	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1139	$msg->("reloaded");
1140	};
1141
1142	sub perl_reload() {
1143	_perl_reload {
1144	warn $_[0];
1145	print "$_[0]\n";
1146	};	3905	};
		3906	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3907	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3908	};
1147	}	3909	}
1148		3910
1149	register "<global>", __PACKAGE__;	3911	{
		3912	# configure IO::AIO
1150		3913
1151	register_command "perl-reload" => sub {	3914	IO::AIO::min_parallel 8;
		3915	IO::AIO::max_poll_time $TICK * 0.1;
		3916	undef $AnyEvent::AIO::WATCHER;
		3917	}
		3918
		3919	my $_log_backtrace;
		3920
		3921	sub _log_backtrace {
1152	my ($who, $arg) = @_;	3922	my ($msg, @addr) = @_;
1153		3923
1154	if ($who->flag (FLAG_WIZ)) {	3924	$msg =~ s/\n//;
1155	_perl_reload {	3925
1156	warn $_[0];	3926	# limit the # of concurrent backtraces
1157	$who->message ($_[0]);	3927	if ($_log_backtrace < 2) {
		3928	++$_log_backtrace;
		3929	my $perl_bt = Carp::longmess $msg;
		3930	async {
		3931	$Coro::current->{desc} = "abt $msg";
		3932
		3933	my @bt = fork_call {
		3934	@addr = map { sprintf "%x", $_ } @addr;
		3935	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3936	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3937	or die "addr2line: $!";
		3938
		3939	my @funcs;
		3940	my @res = <$fh>;
		3941	chomp for @res;
		3942	while (@res) {
		3943	my ($func, $line) = splice @res, 0, 2, ();
		3944	push @funcs, "[$func] $line";
		3945	}
		3946
		3947	@funcs
		3948	};
		3949
		3950	LOG llevInfo, "[ABT] $perl_bt\n";
		3951	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3952	LOG llevInfo, "[ABT] $_\n" for @bt;
		3953	--$_log_backtrace;
1158	};	3954	};
1159	}	3955	} else {
1160	};	3956	LOG llevInfo, "[ABT] $msg\n";
1161		3957	LOG llevInfo, "[ABT] [suppressed]\n";
1162	unshift @INC, $LIBDIR;
1163
1164	$TICK_WATCHER = Event->timer (
1165	prio => 0,
1166	at => $NEXT_TICK || 1,
1167	data => WF_AUTOCANCEL,
1168	cb => sub {
1169	cf::server_tick; # one server iteration
1170
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;
1173
1174	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1176
1177	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;
1179	},	3958	}
1180	);	3959	}
1181		3960
1182	IO::AIO::max_poll_time $TICK * 0.2;	3961	# load additional modules
		3962	require "cf/$_.pm" for @EXTRA_MODULES;
1183		3963
1184	Event->io (fd => IO::AIO::poll_fileno,	3964	END { cf::emergency_save }
1185	poll => 'r',
1186	prio => 5,
1187	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);
1189		3965
1190	1	3966	1
1191		3967

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines