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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.104 by root, Sat Dec 30 16:56:16 2006 UTC vs.
Revision 1.460 by root, Mon Dec 15 17:04:53 2008 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;
2		23
		24	use 5.10.0;
3	use utf8;	25	use utf8;
4	use strict;	26	use strict "vars", "subs";
5		27
6	use Symbol;	28	use Symbol;
7	use List::Util;	29	use List::Util;
8	use Storable;	30	use Socket;
		31	use EV;
9	use Opcode;	32	use Opcode;
10	use Safe;	33	use Safe;
11	use Safe::Hole;	34	use Safe::Hole;
		35	use Storable ();
12		36
		37	use Guard ();
13	use Coro 3.3;	38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
14	use Coro::Event;	42	use Coro::AnyEvent;
15	use Coro::Timer;	43	use Coro::Timer;
16	use Coro::Signal;	44	use Coro::Signal;
17	use Coro::Semaphore;	45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
18		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Digest::MD5;
		57	use Fcntl;
		58	use YAML ();
19	use IO::AIO 2.3;	59	use IO::AIO ();
20	use YAML::Syck ();
21	use Time::HiRes;	60	use Time::HiRes;
		61	use Compress::LZF;
		62	use Digest::MD5 ();
22		63
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	64	AnyEvent::detect;
24		65
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	66	# configure various modules to our taste
26	$YAML::Syck::ImplicitUnicode = 1;	67	#
		68	$Storable::canonical = 1; # reduce rsync transfers
		69	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
27		70
28	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	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
29		76
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	77	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		78
32	our %COMMAND = ();	79	our %COMMAND = ();
33	our %COMMAND_TIME = ();	80	our %COMMAND_TIME = ();
		81
		82	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	83	our %EXTCMD = ();
		84	our %EXTICMD = ();
		85	our %EXT_CORO = (); # coroutines bound to extensions
		86	our %EXT_MAP = (); # pluggable maps
35		87
		88	our $RELOAD; # number of reloads so far, non-zero while in reload
36	our @EVENT;	89	our @EVENT;
37	our $LIBDIR = datadir . "/ext";
38		90
39	our $TICK = MAX_TIME * 1e-6;	91	our $CONFDIR = confdir;
40	our $TICK_WATCHER;	92	our $DATADIR = datadir;
		93	our $LIBDIR = "$DATADIR/ext";
		94	our $PODDIR = "$DATADIR/pod";
		95	our $MAPDIR = "$DATADIR/" . mapdir;
		96	our $LOCALDIR = localdir;
		97	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		98	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		99	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		100	our $RANDOMDIR = "$LOCALDIR/random";
		101	our $BDBDIR = "$LOCALDIR/db";
		102	our $PIDFILE = "$LOCALDIR/pid";
		103	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		104
		105	our %RESOURCE;
		106
		107	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		108	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	109	our $NEXT_TICK;
42	our $NOW;	110	our $USE_FSYNC = 1; # use fsync to write maps - default off
		111
		112	our $BDB_DEADLOCK_WATCHER;
		113	our $BDB_CHECKPOINT_WATCHER;
		114	our $BDB_TRICKLE_WATCHER;
		115	our $DB_ENV;
43		116
44	our %CFG;	117	our %CFG;
45		118
46	our $UPTIME; $UPTIME ||= time;	119	our $UPTIME; $UPTIME ||= time;
47	our $RUNTIME;	120	our $RUNTIME;
		121	our $NOW;
48		122
49	our %MAP; # all maps	123	our (%PLAYER, %PLAYER_LOADING); # all users
50	our $LINK_MAP; # the special {link} map	124	our (%MAP, %MAP_LOADING ); # all maps
51	our $FREEZE;	125	our $LINK_MAP; # the special {link} map, which is always available
		126
		127	# used to convert map paths into valid unix filenames by replacing / by ∕
		128	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		129
		130	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		131	our $LOADAVG; # same thing, but with alpha-smoothing
		132	our $JITTER; # average jitter
		133	our $TICK_START; # for load detecting purposes
		134
		135	our @POST_INIT;
		136
		137	our $REATTACH_ON_RELOAD; # ste to true to force object reattach on reload (slow)
52		138
53	binmode STDOUT;	139	binmode STDOUT;
54	binmode STDERR;	140	binmode STDERR;
55		141
56	# read virtual server time, if available	142	# read virtual server time, if available
57	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	143	unless ($RUNTIME || !-e $RUNTIMEFILE) {
58	open my $fh, "<", cf::localdir . "/runtime"	144	open my $fh, "<", $RUNTIMEFILE
59	or die "unable to read runtime file: $!";	145	or die "unable to read $RUNTIMEFILE file: $!";
60	$RUNTIME = <$fh> + 0.;	146	$RUNTIME = <$fh> + 0.;
61	}	147	}
62		148
63	mkdir cf::localdir;	149	mkdir $_
64	mkdir cf::localdir . "/" . cf::playerdir;	150	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
65	mkdir cf::localdir . "/" . cf::tmpdir;
66	mkdir cf::localdir . "/" . cf::uniquedir;
67		151
68	our %EXT_CORO;	152	our $EMERGENCY_POSITION;
		153
		154	sub cf::map::normalise;
69		155
70	#############################################################################	156	#############################################################################
71		157
72	=head2 GLOBAL VARIABLES	158	=head2 GLOBAL VARIABLES
73		159
…		…
80	=item $cf::RUNTIME	166	=item $cf::RUNTIME
81		167
82	The time this server has run, starts at 0 and is increased by $cf::TICK on	168	The time this server has run, starts at 0 and is increased by $cf::TICK on
83	every server tick.	169	every server tick.
84		170
85	=item $cf::LIBDIR	171	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		172	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		173	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
86		174
87	The perl library directory, where extensions and cf-specific modules can	175	Various directories - "/etc", read-only install directory, perl-library
88	be found. It will be added to C<@INC> automatically.	176	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		177	unique-items directory, player file directory, random maps directory and
		178	database environment.
89		179
90	=item $cf::NOW	180	=item $cf::NOW
91		181
92	The time of the last (current) server tick.	182	The time of the last (current) server tick.
93		183
94	=item $cf::TICK	184	=item $cf::TICK
95		185
96	The interval between server ticks, in seconds.	186	The interval between server ticks, in seconds.
97		187
		188	=item $cf::LOADAVG
		189
		190	The current CPU load on the server (alpha-smoothed), as a value between 0
		191	(none) and 1 (overloaded), indicating how much time is spent on processing
		192	objects per tick. Healthy values are < 0.5.
		193
		194	=item $cf::LOAD
		195
		196	The raw value load value from the last tick.
		197
98	=item %cf::CFG	198	=item %cf::CFG
99		199
100	Configuration for the server, loaded from C</etc/crossfire/config>, or	200	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
101	from wherever your confdir points to.	201	from wherever your confdir points to.
		202
		203	=item cf::wait_for_tick, cf::wait_for_tick_begin
		204
		205	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		206	returns directly I<after> the tick processing (and consequently, can only wake one process
		207	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		208
		209	=item @cf::INVOKE_RESULTS
		210
		211	This array contains the results of the last C<invoke ()> call. When
		212	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		213	that call.
102		214
103	=back	215	=back
104		216
105	=cut	217	=cut
106		218
107	BEGIN {	219	BEGIN {
108	*CORE::GLOBAL::warn = sub {	220	*CORE::GLOBAL::warn = sub {
109	my $msg = join "", @_;	221	my $msg = join "", @_;
110	utf8::encode $msg;
111		222
112	$msg .= "\n"	223	$msg .= "\n"
113	unless $msg =~ /\n$/;	224	unless $msg =~ /\n$/;
114		225
		226	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		227
115	LOG llevError, "cfperl: $msg";	228	LOG llevError, $msg;
116	};	229	};
117	}	230	}
		231
		232	$Coro::State::DIEHOOK = sub {
		233	return unless $^S eq 0; # "eq", not "=="
		234
		235	if ($Coro::current == $Coro::main) {#d#
		236	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		237	return;#d#
		238	}#d#
		239
		240	# kill coroutine otherwise
		241	warn Carp::longmess $_[0];
		242	Coro::terminate
		243	};
		244
		245	$SIG{__DIE__} = sub { }; #d#?
118		246
119	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	247	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
120	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	248	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
121	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	249	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
122	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	250	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
123	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	251	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		252	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
124	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	253	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
125		254
126	# we bless all objects into (empty) derived classes to force a method lookup	255	# we bless all objects into (empty) derived classes to force a method lookup
127	# within the Safe compartment.	256	# within the Safe compartment.
128	for my $pkg (qw(	257	for my $pkg (qw(
129	cf::global cf::attachable	258	cf::global cf::attachable
130	cf::object cf::object::player	259	cf::object cf::object::player
131	cf::client cf::player	260	cf::client cf::player
132	cf::arch cf::living	261	cf::arch cf::living
		262	cf::map cf::mapspace
133	cf::map cf::party cf::region	263	cf::party cf::region
134	)) {	264	)) {
135	no strict 'refs';
136	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	265	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
137	}	266	}
138		267
139	$Event::DIED = sub {	268	$EV::DIED = sub {
140	warn "error in event callback: @_";	269	warn "error in event callback: @_";
141	};	270	};
142		271
143	my %ext_pkg;	272	#############################################################################
144	my @exts;
145	my @hook;
146		273
147	=head2 UTILITY FUNCTIONS	274	=head2 UTILITY FUNCTIONS
148		275
149	=over 4	276	=over 4
150		277
151	=cut	278	=item dumpval $ref
152		279
153	use JSON::Syck (); # TODO# replace by JSON::PC once working	280	=cut
154		281
		282	sub dumpval {
		283	eval {
		284	local $SIG{__DIE__};
		285	my $d;
		286	if (1) {
		287	$d = new Data::Dumper([$_[0]], ["*var"]);
		288	$d->Terse(1);
		289	$d->Indent(2);
		290	$d->Quotekeys(0);
		291	$d->Useqq(1);
		292	#$d->Bless(...);
		293	$d->Seen($_[1]) if @_ > 1;
		294	$d = $d->Dump();
		295	}
		296	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		297	$d
		298	} || "[unable to dump $_[0]: '$@']";
		299	}
		300
155	=item $ref = cf::from_json $json	301	=item $ref = cf::decode_json $json
156		302
157	Converts a JSON string into the corresponding perl data structure.	303	Converts a JSON string into the corresponding perl data structure.
158		304
159	=cut
160
161	sub from_json($) {
162	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
163	JSON::Syck::Load $_[0]
164	}
165
166	=item $json = cf::to_json $ref	305	=item $json = cf::encode_json $ref
167		306
168	Converts a perl data structure into its JSON representation.	307	Converts a perl data structure into its JSON representation.
169		308
170	=cut	309	=cut
171		310
172	sub to_json($) {	311	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
173	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
174	JSON::Syck::Dump $_[0]
175	}
176		312
		313	sub encode_json($) { $json_coder->encode ($_[0]) }
		314	sub decode_json($) { $json_coder->decode ($_[0]) }
		315
		316	=item cf::post_init { BLOCK }
		317
		318	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		319	but I<before> the server starts ticking again.
		320
		321	The cdoeblock will have a single boolean argument to indicate whether this
		322	is a reload or not.
		323
		324	=cut
		325
		326	sub post_init(&) {
		327	push @POST_INIT, shift;
		328	}
		329
		330	=item cf::lock_wait $string
		331
		332	Wait until the given lock is available. See cf::lock_acquire.
		333
		334	=item my $lock = cf::lock_acquire $string
		335
		336	Wait until the given lock is available and then acquires it and returns
		337	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		338	for example when the coroutine gets canceled), the lock is automatically
		339	returned.
		340
		341	Locks are *not* recursive, locking from the same coro twice results in a
		342	deadlocked coro.
		343
		344	Lock names should begin with a unique identifier (for example, cf::map::find
		345	uses map_find and cf::map::load uses map_load).
		346
		347	=item $locked = cf::lock_active $string
		348
		349	Return true if the lock is currently active, i.e. somebody has locked it.
		350
		351	=cut
		352
		353	our $LOCKS = new Coro::SemaphoreSet;
		354
		355	sub lock_wait($) {
		356	$LOCKS->wait ($_[0]);
		357	}
		358
		359	sub lock_acquire($) {
		360	$LOCKS->guard ($_[0])
		361	}
		362
		363	sub lock_active($) {
		364	$LOCKS->count ($_[0]) < 1
		365	}
		366
		367	sub freeze_mainloop {
		368	tick_inhibit_inc;
		369
		370	&Guard::guard (\&tick_inhibit_dec);
		371	}
		372
		373	=item cf::periodic $interval, $cb
		374
		375	Like EV::periodic, but randomly selects a starting point so that the actions
		376	get spread over timer.
		377
		378	=cut
		379
		380	sub periodic($$) {
		381	my ($interval, $cb) = @_;
		382
		383	my $start = rand List::Util::min 180, $interval;
		384
		385	EV::periodic $start, $interval, 0, $cb
		386	}
		387
		388	=item cf::get_slot $time[, $priority[, $name]]
		389
		390	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		391	This call blocks and returns only when you have at least C<$time> seconds
		392	of cpu time till the next tick. The slot is only valid till the next cede.
		393
		394	The optional C<$name> can be used to identify the job to run. It might be
		395	used for statistical purposes and should identify the same time-class.
		396
		397	Useful for short background jobs.
		398
		399	=cut
		400
		401	our @SLOT_QUEUE;
		402	our $SLOT_QUEUE;
		403
		404	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		405	$SLOT_QUEUE = Coro::async {
		406	$Coro::current->desc ("timeslot manager");
		407
		408	my $signal = new Coro::Signal;
		409
		410	while () {
		411	next_job:
		412	my $avail = cf::till_tick;
		413	if ($avail > 0.01) {
		414	for (0 .. $#SLOT_QUEUE) {
		415	if ($SLOT_QUEUE[$_][0] < $avail) {
		416	my $job = splice @SLOT_QUEUE, $_, 1, ();
		417	$job->[2]->send;
		418	Coro::cede;
		419	goto next_job;
		420	}
		421	}
		422	}
		423
		424	if (@SLOT_QUEUE) {
		425	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		426	push @cf::WAIT_FOR_TICK, $signal;
		427	$signal->wait;
		428	} else {
		429	Coro::schedule;
		430	}
		431	}
		432	};
		433
		434	sub get_slot($;$$) {
		435	return if tick_inhibit || $Coro::current == $Coro::main;
		436
		437	my ($time, $pri, $name) = @_;
		438
		439	$time = $TICK * .6 if $time > $TICK * .6;
		440	my $sig = new Coro::Signal;
		441
		442	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		443	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		444	$SLOT_QUEUE->ready;
		445	$sig->wait;
		446	}
		447
		448	=item cf::async { BLOCK }
		449
		450	Currently the same as Coro::async_pool, meaning you cannot use
		451	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		452	thing you are allowed to do is call C<prio> on it.
		453
		454	=cut
		455
		456	BEGIN { *async = \&Coro::async_pool }
		457
		458	=item cf::sync_job { BLOCK }
		459
		460	The design of Deliantra requires that the main coroutine ($Coro::main)
		461	is always able to handle events or runnable, as Deliantra is only
		462	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		463	acceptable.
		464
		465	If it must be done, put the blocking parts into C<sync_job>. This will run
		466	the given BLOCK in another coroutine while waiting for the result. The
		467	server will be frozen during this time, so the block should either finish
		468	fast or be very important.
		469
		470	=cut
		471
		472	sub sync_job(&) {
		473	my ($job) = @_;
		474
		475	if ($Coro::current == $Coro::main) {
		476	my $time = EV::time;
		477
		478	# this is the main coro, too bad, we have to block
		479	# till the operation succeeds, freezing the server :/
		480
		481	LOG llevError, Carp::longmess "sync job";#d#
		482
		483	my $freeze_guard = freeze_mainloop;
		484
		485	my $busy = 1;
		486	my @res;
		487
		488	(async {
		489	$Coro::current->desc ("sync job coro");
		490	@res = eval { $job->() };
		491	warn $@ if $@;
		492	undef $busy;
		493	})->prio (Coro::PRIO_MAX);
		494
		495	while ($busy) {
		496	if (Coro::nready) {
		497	Coro::cede_notself;
		498	} else {
		499	EV::loop EV::LOOP_ONESHOT;
		500	}
		501	}
		502
		503	my $time = EV::time - $time;
		504
		505	$TICK_START += $time; # do not account sync jobs to server load
		506
		507	wantarray ? @res : $res[0]
		508	} else {
		509	# we are in another coroutine, how wonderful, everything just works
		510
		511	$job->()
		512	}
		513	}
		514
177	=item $coro = cf::coro { BLOCK }	515	=item $coro = cf::async_ext { BLOCK }
178		516
179	Creates and returns a new coro. This coro is automcatially being canceled	517	Like async, but this coro is automatically being canceled when the
180	when the extension calling this is being unloaded.	518	extension calling this is being unloaded.
181		519
182	=cut	520	=cut
183		521
184	sub coro(&) {	522	sub async_ext(&) {
185	my $cb = shift;	523	my $cb = shift;
186		524
187	my $coro; $coro = async {	525	my $coro = &Coro::async ($cb);
188	eval {
189	$cb->();
190	};
191	warn $@ if $@;
192	};
193		526
194	$coro->on_destroy (sub {	527	$coro->on_destroy (sub {
195	delete $EXT_CORO{$coro+0};	528	delete $EXT_CORO{$coro+0};
196	});	529	});
197	$EXT_CORO{$coro+0} = $coro;	530	$EXT_CORO{$coro+0} = $coro;
198		531
199	$coro	532	$coro
200	}	533	}
201		534
		535	=item fork_call { }, $args
		536
		537	Executes the given code block with the given arguments in a seperate
		538	process, returning the results. Everything must be serialisable with
		539	Coro::Storable. May, of course, block. Note that the executed sub may
		540	never block itself or use any form of event handling.
		541
		542	=cut
		543
		544	sub fork_call(&@) {
		545	my ($cb, @args) = @_;
		546
		547	# we seemingly have to make a local copy of the whole thing,
		548	# otherwise perl prematurely frees the stuff :/
		549	# TODO: investigate and fix (likely this will be rather laborious)
		550
		551	my @res = Coro::Util::fork_eval {
		552	reset_signals;
		553	&$cb
		554	}, @args;
		555
		556	wantarray ? @res : $res[-1]
		557	}
		558
		559	=item $coin = coin_from_name $name
		560
		561	=cut
		562
		563	our %coin_alias = (
		564	"silver" => "silvercoin",
		565	"silvercoin" => "silvercoin",
		566	"silvercoins" => "silvercoin",
		567	"gold" => "goldcoin",
		568	"goldcoin" => "goldcoin",
		569	"goldcoins" => "goldcoin",
		570	"platinum" => "platinacoin",
		571	"platinumcoin" => "platinacoin",
		572	"platinumcoins" => "platinacoin",
		573	"platina" => "platinacoin",
		574	"platinacoin" => "platinacoin",
		575	"platinacoins" => "platinacoin",
		576	"royalty" => "royalty",
		577	"royalties" => "royalty",
		578	);
		579
		580	sub coin_from_name($) {
		581	$coin_alias{$_[0]}
		582	? cf::arch::find $coin_alias{$_[0]}
		583	: undef
		584	}
		585
		586	=item $value = cf::db_get $family => $key
		587
		588	Returns a single value from the environment database.
		589
		590	=item cf::db_put $family => $key => $value
		591
		592	Stores the given C<$value> in the family. It can currently store binary
		593	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		594
		595	=item $db = cf::db_table "name"
		596
		597	Create and/or open a new database table. The string must not be "db" and must be unique
		598	within each server.
		599
		600	=cut
		601
		602	sub db_table($) {
		603	my ($name) = @_;
		604	my $db = BDB::db_create $DB_ENV;
		605
		606	eval {
		607	$db->set_flags (BDB::CHKSUM);
		608
		609	utf8::encode $name;
		610	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		611	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		612	cf::cleanup "db_open(db): $!" if $!;
		613	};
		614	cf::cleanup "db_open(db): $@" if $@;
		615
		616	$db
		617	}
		618
		619	our $DB;
		620
		621	sub db_init {
		622	cf::sync_job {
		623	$DB ||= db_table "db";
		624	};
		625	}
		626
		627	sub db_get($$) {
		628	my $key = "$_[0]/$_[1]";
		629
		630	cf::sync_job {
		631	BDB::db_get $DB, undef, $key, my $data;
		632
		633	$! ? ()
		634	: $data
		635	}
		636	}
		637
		638	sub db_put($$$) {
		639	BDB::dbreq_pri 4;
		640	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		641	}
		642
		643	=item cf::cache $id => [$paths...], $processversion => $process
		644
		645	Generic caching function that returns the value of the resource $id,
		646	caching and regenerating as required.
		647
		648	This function can block.
		649
		650	=cut
		651
		652	sub cache {
		653	my ($id, $src, $processversion, $process) = @_;
		654
		655	my $meta =
		656	join "\x00",
		657	$processversion,
		658	map {
		659	aio_stat $_
		660	and Carp::croak "$_: $!";
		661
		662	($_, (stat _)[7,9])
		663	} @$src;
		664
		665	my $dbmeta = db_get cache => "$id/meta";
		666	if ($dbmeta ne $meta) {
		667	# changed, we may need to process
		668
		669	my @data;
		670	my $md5;
		671
		672	for (0 .. $#$src) {
		673	0 <= aio_load $src->[$_], $data[$_]
		674	or Carp::croak "$src->[$_]: $!";
		675	}
		676
		677	# if processing is expensive, check
		678	# checksum first
		679	if (1) {
		680	$md5 =
		681	join "\x00",
		682	$processversion,
		683	map {
		684	cf::cede_to_tick;
		685	($src->[$_], Digest::MD5::md5_hex $data[$_])
		686	} 0.. $#$src;
		687
		688
		689	my $dbmd5 = db_get cache => "$id/md5";
		690	if ($dbmd5 eq $md5) {
		691	db_put cache => "$id/meta", $meta;
		692
		693	return db_get cache => "$id/data";
		694	}
		695	}
		696
		697	my $t1 = Time::HiRes::time;
		698	my $data = $process->(\@data);
		699	my $t2 = Time::HiRes::time;
		700
		701	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		702
		703	db_put cache => "$id/data", $data;
		704	db_put cache => "$id/md5" , $md5;
		705	db_put cache => "$id/meta", $meta;
		706
		707	return $data;
		708	}
		709
		710	db_get cache => "$id/data"
		711	}
		712
		713	=item cf::datalog type => key => value, ...
		714
		715	Log a datalog packet of the given type with the given key-value pairs.
		716
		717	=cut
		718
		719	sub datalog($@) {
		720	my ($type, %kv) = @_;
		721	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		722	}
		723
202	=back	724	=back
203		725
204	=cut	726	=cut
205		727
206	#############################################################################	728	#############################################################################
207		729
208	=head2 ATTACHABLE OBJECTS	730	=head2 ATTACHABLE OBJECTS
209		731
210	Many objects in crossfire are so-called attachable objects. That means you can	732	Many objects in deliantra are so-called attachable objects. That means you can
211	attach callbacks/event handlers (a collection of which is called an "attachment")	733	attach callbacks/event handlers (a collection of which is called an "attachment")
212	to it. All such attachable objects support the following methods.	734	to it. All such attachable objects support the following methods.
213		735
214	In the following description, CLASS can be any of C<global>, C<object>	736	In the following description, CLASS can be any of C<global>, C<object>
215	C<player>, C<client> or C<map> (i.e. the attachable objects in	737	C<player>, C<client> or C<map> (i.e. the attachable objects in
216	crossfire+).	738	Deliantra).
217		739
218	=over 4	740	=over 4
219		741
220	=item $attachable->attach ($attachment, key => $value...)	742	=item $attachable->attach ($attachment, key => $value...)
221		743
…		…
265	=item cf::CLASS::attachment $name, ...	787	=item cf::CLASS::attachment $name, ...
266		788
267	Register an attachment by C<$name> through which attachable objects of the	789	Register an attachment by C<$name> through which attachable objects of the
268	given CLASS can refer to this attachment.	790	given CLASS can refer to this attachment.
269		791
270	Some classes such as crossfire maps and objects can specify attachments	792	Some classes such as deliantra maps and objects can specify attachments
271	that are attached at load/instantiate time, thus the need for a name.	793	that are attached at load/instantiate time, thus the need for a name.
272		794
273	These calls expect any number of the following handler/hook descriptions:	795	These calls expect any number of the following handler/hook descriptions:
274		796
275	=over 4	797	=over 4
…		…
335	our @CB_TYPE = (); # registry for type (cf-object class) based events	857	our @CB_TYPE = (); # registry for type (cf-object class) based events
336	our @CB_MAP = ();	858	our @CB_MAP = ();
337		859
338	my %attachment;	860	my %attachment;
339		861
		862	sub cf::attachable::thawer_merge {
		863	# simply override everything except _meta
		864	local $_[0]{_meta};
		865	%{$_[0]} = %{$_[1]};
		866	}
		867
340	sub _attach_cb($$$$) {	868	sub _attach_cb($$$$) {
341	my ($registry, $event, $prio, $cb) = @_;	869	my ($registry, $event, $prio, $cb) = @_;
342		870
343	use sort 'stable';	871	use sort 'stable';
344		872
…		…
378	$registry = $CB_TYPE[$object_type] ||= [];	906	$registry = $CB_TYPE[$object_type] ||= [];
379		907
380	} elsif ($type eq "subtype") {	908	} elsif ($type eq "subtype") {
381	defined $object_type or Carp::croak "subtype specified without type";	909	defined $object_type or Carp::croak "subtype specified without type";
382	my $object_subtype = shift @arg;	910	my $object_subtype = shift @arg;
383	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	911	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
384		912
385	} elsif ($type eq "package") {	913	} elsif ($type eq "package") {
386	my $pkg = shift @arg;	914	my $pkg = shift @arg;
387		915
388	while (my ($name, $id) = each %cb_id) {	916	while (my ($name, $id) = each %cb_id) {
…		…
417	_attach $registry, $klass, @attach;	945	_attach $registry, $klass, @attach;
418	}	946	}
419		947
420	$obj->{$name} = \%arg;	948	$obj->{$name} = \%arg;
421	} else {	949	} else {
422	warn "object uses attachment '$name' that is not available, postponing.\n";	950	warn "object uses attachment '$name' which is not available, postponing.\n";
423	}	951	}
424		952
425	$obj->{_attachment}{$name} = undef;	953	$obj->{_attachment}{$name} = undef;
426	}	954	}
427		955
…		…
429	if (ref $_[0]) {	957	if (ref $_[0]) {
430	_object_attach @_;	958	_object_attach @_;
431	} else {	959	} else {
432	_attach shift->_attach_registry, @_;	960	_attach shift->_attach_registry, @_;
433	}	961	}
		962	_recalc_want;
434	};	963	};
435		964
436	# all those should be optimised	965	# all those should be optimised
437	sub cf::attachable::detach {	966	sub cf::attachable::detach {
438	my ($obj, $name) = @_;	967	my ($obj, $name) = @_;
…		…
441	delete $obj->{_attachment}{$name};	970	delete $obj->{_attachment}{$name};
442	reattach ($obj);	971	reattach ($obj);
443	} else {	972	} else {
444	Carp::croak "cannot, currently, detach class attachments";	973	Carp::croak "cannot, currently, detach class attachments";
445	}	974	}
		975	_recalc_want;
446	};	976	};
447		977
448	sub cf::attachable::attached {	978	sub cf::attachable::attached {
449	my ($obj, $name) = @_;	979	my ($obj, $name) = @_;
450		980
…		…
465	";	995	";
466	die if $@;	996	die if $@;
467	}	997	}
468		998
469	our $override;	999	our $override;
470	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1000	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
471		1001
472	sub override {	1002	sub override {
473	$override = 1;	1003	$override = 1;
474	@invoke_results = ();	1004	@INVOKE_RESULTS = (@_);
475	}	1005	}
476		1006
477	sub do_invoke {	1007	sub do_invoke {
478	my $event = shift;	1008	my $event = shift;
479	my $callbacks = shift;	1009	my $callbacks = shift;
480		1010
481	@invoke_results = ();	1011	@INVOKE_RESULTS = ();
482		1012
483	local $override;	1013	local $override;
484		1014
485	for (@$callbacks) {	1015	for (@$callbacks) {
486	eval { &{$_->[1]} };	1016	eval { &{$_->[1]} };
…		…
495	}	1025	}
496		1026
497	0	1027	0
498	}	1028	}
499		1029
500	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)	1030	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
501		1031
502	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)	1032	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
503		1033
504	Generate an object-specific event with the given arguments.	1034	Generate an object-specific event with the given arguments.
505		1035
506	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	1036	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
507	removed in future versions), and there is no public API to access override	1037	removed in future versions), and there is no public API to access override
508	results (if you must, access C<@cf::invoke_results> directly).	1038	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
509		1039
510	=back	1040	=back
511		1041
512	=cut	1042	=cut
513		1043
514	#############################################################################	1044	#############################################################################
515	# object support	1045	# object support
		1046
		1047	sub _object_equal($$);
		1048	sub _object_equal($$) {
		1049	my ($a, $b) = @_;
		1050
		1051	return 0 unless (ref $a) eq (ref $b);
		1052
		1053	if ("HASH" eq ref $a) {
		1054	my @ka = keys %$a;
		1055	my @kb = keys %$b;
		1056
		1057	return 0 if @ka != @kb;
		1058
		1059	for (0 .. $#ka) {
		1060	return 0 unless $ka[$_] eq $kb[$_];
		1061	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1062	}
		1063
		1064	} elsif ("ARRAY" eq ref $a) {
		1065
		1066	return 0 if @$a != @$b;
		1067
		1068	for (0 .. $#$a) {
		1069	return 0 unless _object_equal $a->[$_], $b->[$_];
		1070	}
		1071
		1072	} elsif ($a ne $b) {
		1073	return 0;
		1074	}
		1075
		1076	1
		1077	}
		1078
		1079	our $SLOW_MERGES;#d#
		1080	sub _can_merge {
		1081	my ($ob1, $ob2) = @_;
		1082
		1083	++$SLOW_MERGES;#d#
		1084
		1085	# we do the slow way here
		1086	return _object_equal $ob1, $ob2
		1087	}
516		1088
517	sub reattach {	1089	sub reattach {
518	# basically do the same as instantiate, without calling instantiate	1090	# basically do the same as instantiate, without calling instantiate
519	my ($obj) = @_;	1091	my ($obj) = @_;
		1092
		1093	# no longer needed after getting rid of delete_package?
		1094	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
520		1095
521	my $registry = $obj->registry;	1096	my $registry = $obj->registry;
522		1097
523	@$registry = ();	1098	@$registry = ();
524		1099
…		…
539	cf::attachable->attach (	1114	cf::attachable->attach (
540	prio => -1000000,	1115	prio => -1000000,
541	on_instantiate => sub {	1116	on_instantiate => sub {
542	my ($obj, $data) = @_;	1117	my ($obj, $data) = @_;
543		1118
544	$data = from_json $data;	1119	$data = decode_json $data;
545		1120
546	for (@$data) {	1121	for (@$data) {
547	my ($name, $args) = @$_;	1122	my ($name, $args) = @$_;
548		1123
549	$obj->attach ($name, %{$args || {} });	1124	$obj->attach ($name, %{$args || {} });
…		…
563	);	1138	);
564		1139
565	sub object_freezer_save {	1140	sub object_freezer_save {
566	my ($filename, $rdata, $objs) = @_;	1141	my ($filename, $rdata, $objs) = @_;
567		1142
		1143	sync_job {
568	if (length $$rdata) {	1144	if (length $$rdata) {
		1145	utf8::decode (my $decname = $filename);
569	warn sprintf "saving %s (%d,%d)\n",	1146	warn sprintf "saving %s (%d,%d)\n",
570	$filename, length $$rdata, scalar @$objs;	1147	$decname, length $$rdata, scalar @$objs;
571		1148
572	if (open my $fh, ">:raw", "$filename~") {	1149	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
573	chmod SAVE_MODE, $fh;
574	syswrite $fh, $$rdata;
575	close $fh;
576
577	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
578	chmod SAVE_MODE, $fh;	1150	aio_chmod $fh, SAVE_MODE;
579	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1151	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1152	aio_fsync $fh if $cf::USE_FSYNC;
580	close $fh;	1153	aio_close $fh;
		1154
		1155	if (@$objs) {
		1156	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1157	aio_chmod $fh, SAVE_MODE;
		1158	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1159	aio_write $fh, 0, (length $data), $data, 0;
		1160	aio_fsync $fh if $cf::USE_FSYNC;
		1161	aio_close $fh;
581	rename "$filename.pst~", "$filename.pst";	1162	aio_rename "$filename.pst~", "$filename.pst";
		1163	}
		1164	} else {
		1165	aio_unlink "$filename.pst";
		1166	}
		1167
		1168	aio_rename "$filename~", $filename;
		1169
		1170	$filename =~ s%/[^/]+$%%;
		1171	aio_pathsync $filename if $cf::USE_FSYNC;
582	} else {	1172	} else {
583	unlink "$filename.pst";	1173	warn "unable to save objects: $filename~: $!\n";
584	}	1174	}
585
586	rename "$filename~", $filename;
587	} else {	1175	} else {
588	warn "FATAL: $filename~: $!\n";
589	}
590	} else {
591	unlink $filename;	1176	aio_unlink $filename;
592	unlink "$filename.pst";	1177	aio_unlink "$filename.pst";
		1178	}
593	}	1179	};
594	}	1180	}
595		1181
596	sub object_freezer_as_string {	1182	sub object_freezer_as_string {
597	my ($rdata, $objs) = @_;	1183	my ($rdata, $objs) = @_;
598		1184
…		…
602	}	1188	}
603		1189
604	sub object_thawer_load {	1190	sub object_thawer_load {
605	my ($filename) = @_;	1191	my ($filename) = @_;
606		1192
607	local $/;
608
609	my $av;
610
611	#TODO: use sysread etc.
612	if (open my $data, "<:raw:perlio", $filename) {
613	$data = <$data>;
614	if (open my $pst, "<:raw:perlio", "$filename.pst") {
615	$av = eval { (Storable::thaw <$pst>)->{objs} };
616	}
617	return ($data, $av);	1193	my ($data, $av);
618	}
619		1194
620	()	1195	(aio_load $filename, $data) >= 0
		1196	or return;
		1197
		1198	unless (aio_stat "$filename.pst") {
		1199	(aio_load "$filename.pst", $av) >= 0
		1200	or return;
		1201
		1202	my $st = eval { Coro::Storable::thaw $av };
		1203	$av = $st->{objs};
		1204	}
		1205
		1206	utf8::decode (my $decname = $filename);
		1207	warn sprintf "loading %s (%d,%d)\n",
		1208	$decname, length $data, scalar @{$av || []};
		1209
		1210	($data, $av)
621	}	1211	}
		1212
		1213	=head2 COMMAND CALLBACKS
		1214
		1215	=over 4
		1216
		1217	=cut
622		1218
623	#############################################################################	1219	#############################################################################
624	# command handling &c	1220	# command handling &c
625		1221
626	=item cf::register_command $name => \&callback($ob,$args);	1222	=item cf::register_command $name => \&callback($ob,$args);
…		…
639	push @{ $COMMAND{$name} }, [$caller, $cb];	1235	push @{ $COMMAND{$name} }, [$caller, $cb];
640	}	1236	}
641		1237
642	=item cf::register_extcmd $name => \&callback($pl,$packet);	1238	=item cf::register_extcmd $name => \&callback($pl,$packet);
643		1239
644	Register a callbackf ro execution when the client sends an extcmd packet.	1240	Register a callback for execution when the client sends an (synchronous)
		1241	extcmd packet. Ext commands will be processed in the order they are
		1242	received by the server, like other user commands. The first argument is
		1243	the logged-in player. Ext commands can only be processed after a player
		1244	has logged in successfully.
645		1245
646	If the callback returns something, it is sent back as if reply was being	1246	If the callback returns something, it is sent back as if reply was being
647	called.	1247	called.
648		1248
		1249	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1250
		1251	Register a callback for execution when the client sends an (asynchronous)
		1252	exticmd packet. Exti commands are processed by the server as soon as they
		1253	are received, i.e. out of order w.r.t. other commands. The first argument
		1254	is a client socket. Exti commands can be received anytime, even before
		1255	log-in.
		1256
		1257	If the callback returns something, it is sent back as if reply was being
		1258	called.
		1259
649	=cut	1260	=cut
650		1261
651	sub register_extcmd {	1262	sub register_extcmd {
652	my ($name, $cb) = @_;	1263	my ($name, $cb) = @_;
653		1264
654	my $caller = caller;
655	#warn "registering extcmd '$name' to '$caller'";
656
657	$EXTCMD{$name} = [$cb, $caller];	1265	$EXTCMD{$name} = $cb;
658	}	1266	}
		1267
		1268	sub register_exticmd {
		1269	my ($name, $cb) = @_;
		1270
		1271	$EXTICMD{$name} = $cb;
		1272	}
		1273
		1274	use File::Glob ();
659		1275
660	cf::player->attach (	1276	cf::player->attach (
661	on_command => sub {	1277	on_command => sub {
662	my ($pl, $name, $params) = @_;	1278	my ($pl, $name, $params) = @_;
663		1279
…		…
671	cf::override;	1287	cf::override;
672	},	1288	},
673	on_extcmd => sub {	1289	on_extcmd => sub {
674	my ($pl, $buf) = @_;	1290	my ($pl, $buf) = @_;
675		1291
676	my $msg = eval { from_json $buf };	1292	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
677		1293
678	if (ref $msg) {	1294	if (ref $msg) {
		1295	my ($type, $reply, @payload) =
		1296	"ARRAY" eq ref $msg
		1297	? @$msg
		1298	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1299
		1300	my @reply;
		1301
679	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1302	if (my $cb = $EXTCMD{$type}) {
680	if (my %reply = $cb->[0]->($pl, $msg)) {	1303	@reply = $cb->($pl, @payload);
681	$pl->ext_reply ($msg->{msgid}, %reply);
682	}
683	}	1304	}
		1305
		1306	$pl->ext_reply ($reply, @reply)
		1307	if $reply;
		1308
684	} else {	1309	} else {
685	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1310	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
686	}	1311	}
687		1312
688	cf::override;	1313	cf::override;
689	},	1314	},
690	);	1315	);
691		1316
		1317	# "readahead" all extensions
		1318	sub cache_extensions {
		1319	my $grp = IO::AIO::aio_group;
		1320
		1321	add $grp IO::AIO::aio_readdir $LIBDIR, sub {
		1322	for (grep /\.ext$/, @{$_[0]}) {
		1323	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1324	}
		1325	};
		1326
		1327	$grp
		1328	}
		1329
		1330	sub load_extensions {
		1331	cf::sync_job {
		1332	my %todo;
		1333
		1334	for my $path (<$LIBDIR/*.ext>) {
		1335	next unless -r $path;
		1336
		1337	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1338	my $base = $1;
		1339	my $pkg = $1;
		1340	$pkg =~ s/[^[:word:]]/_/g;
		1341	$pkg = "ext::$pkg";
		1342
		1343	open my $fh, "<:utf8", $path
		1344	or die "$path: $!";
		1345
		1346	my $source = do { local $/; <$fh> };
		1347
		1348	my %ext = (
		1349	path => $path,
		1350	base => $base,
		1351	pkg => $pkg,
		1352	);
		1353
		1354	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1355	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1356
		1357	$ext{source} =
		1358	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1359	. "#line 1 \"$path\"\n{\n"
		1360	. $source
		1361	. "\n};\n1";
		1362
		1363	$todo{$base} = \%ext;
		1364	}
		1365
		1366	my %done;
		1367	while (%todo) {
		1368	my $progress;
		1369
		1370	while (my ($k, $v) = each %todo) {
		1371	for (split /,\s*/, $v->{meta}{depends}) {
		1372	goto skip
		1373	unless exists $done{$_};
		1374	}
		1375
		1376	warn "... loading '$k' into '$v->{pkg}'\n";
		1377
		1378	unless (eval $v->{source}) {
		1379	my $msg = $@ ? "$v->{path}: $@\n"
		1380	: "$v->{base}: extension inactive.\n";
		1381
		1382	if (exists $v->{meta}{mandatory}) {
		1383	warn $msg;
		1384	cf::cleanup "mandatory extension failed to load, exiting.";
		1385	}
		1386
		1387	warn $msg;
		1388	}
		1389
		1390	$done{$k} = delete $todo{$k};
		1391	push @EXTS, $v->{pkg};
		1392	$progress = 1;
		1393	}
		1394
		1395	skip:
		1396	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1397	unless $progress;
		1398	}
		1399	};
		1400	}
		1401
		1402	#############################################################################
		1403
		1404	=back
		1405
		1406	=head2 CORE EXTENSIONS
		1407
		1408	Functions and methods that extend core deliantra objects.
		1409
		1410	=cut
		1411
		1412	package cf::player;
		1413
		1414	use Coro::AIO;
		1415
		1416	=head3 cf::player
		1417
		1418	=over 4
		1419
		1420	=item cf::player::num_playing
		1421
		1422	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1423
		1424	=cut
		1425
		1426	sub num_playing {
		1427	scalar grep
		1428	$_->ob->map
		1429	&& !$_->hidden
		1430	&& !$_->ob->flag (cf::FLAG_WIZ),
		1431	cf::player::list
		1432	}
		1433
		1434	=item cf::player::find $login
		1435
		1436	Returns the given player object, loading it if necessary (might block).
		1437
		1438	=cut
		1439
		1440	sub playerdir($) {
		1441	"$PLAYERDIR/"
		1442	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1443	}
		1444
		1445	sub path($) {
		1446	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1447
		1448	(playerdir $login) . "/playerdata"
		1449	}
		1450
		1451	sub find_active($) {
		1452	$cf::PLAYER{$_[0]}
		1453	and $cf::PLAYER{$_[0]}->active
		1454	and $cf::PLAYER{$_[0]}
		1455	}
		1456
		1457	sub exists($) {
		1458	my ($login) = @_;
		1459
		1460	$cf::PLAYER{$login}
		1461	or !aio_stat path $login
		1462	}
		1463
		1464	sub find($) {
		1465	return $cf::PLAYER{$_[0]} || do {
		1466	my $login = $_[0];
		1467
		1468	my $guard = cf::lock_acquire "user_find:$login";
		1469
		1470	$cf::PLAYER{$_[0]} || do {
		1471	# rename old playerfiles to new ones
		1472	#TODO: remove when no longer required
		1473	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1474	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1475	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1476	aio_unlink +(playerdir $login) . "/$login.pl";
		1477
		1478	my $f = new_from_file cf::object::thawer path $login
		1479	or return;
		1480
		1481	my $pl = cf::player::load_pl $f
		1482	or return;
		1483
		1484	local $cf::PLAYER_LOADING{$login} = $pl;
		1485	$f->resolve_delayed_derefs;
		1486	$cf::PLAYER{$login} = $pl
		1487	}
		1488	}
		1489	}
		1490
		1491	sub save($) {
		1492	my ($pl) = @_;
		1493
		1494	return if $pl->{deny_save};
		1495
		1496	my $path = path $pl;
		1497	my $guard = cf::lock_acquire "user_save:$path";
		1498
		1499	return if $pl->{deny_save};
		1500
		1501	aio_mkdir playerdir $pl, 0770;
		1502	$pl->{last_save} = $cf::RUNTIME;
		1503
		1504	cf::get_slot 0.01;
		1505
		1506	$pl->save_pl ($path);
		1507	cf::cede_to_tick;
		1508	}
		1509
		1510	sub new($) {
		1511	my ($login) = @_;
		1512
		1513	my $self = create;
		1514
		1515	$self->ob->name ($login);
		1516	$self->{deny_save} = 1;
		1517
		1518	$cf::PLAYER{$login} = $self;
		1519
		1520	$self
		1521	}
		1522
		1523	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1524
		1525	=cut
		1526
		1527	sub send_msg {
		1528	my $ns = shift->ns
		1529	or return;
		1530	$ns->send_msg (@_);
		1531	}
		1532
		1533	=item $pl->quit_character
		1534
		1535	Nukes the player without looking back. If logged in, the connection will
		1536	be destroyed. May block for a long time.
		1537
		1538	=cut
		1539
		1540	sub quit_character {
		1541	my ($pl) = @_;
		1542
		1543	my $name = $pl->ob->name;
		1544
		1545	$pl->{deny_save} = 1;
		1546	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1547
		1548	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1549	$pl->deactivate;
		1550	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1551	$pl->ob->check_score;
		1552	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1553	$pl->ns->destroy if $pl->ns;
		1554
		1555	my $path = playerdir $pl;
		1556	my $temp = "$path~$cf::RUNTIME~deleting~";
		1557	aio_rename $path, $temp;
		1558	delete $cf::PLAYER{$pl->ob->name};
		1559	$pl->destroy;
		1560
		1561	my $prefix = qr<^~\Q$name\E/>;
		1562
		1563	# nuke player maps
		1564	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1565
		1566	IO::AIO::aio_rmtree $temp;
		1567	}
		1568
		1569	=item $pl->kick
		1570
		1571	Kicks a player out of the game. This destroys the connection.
		1572
		1573	=cut
		1574
		1575	sub kick {
		1576	my ($pl, $kicker) = @_;
		1577
		1578	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1579	$pl->killer ("kicked");
		1580	$pl->ns->destroy;
		1581	}
		1582
		1583	=item cf::player::list_logins
		1584
		1585	Returns am arrayref of all valid playernames in the system, can take a
		1586	while and may block, so not sync_job-capable, ever.
		1587
		1588	=cut
		1589
		1590	sub list_logins {
		1591	my $dirs = aio_readdir $PLAYERDIR
		1592	or return [];
		1593
		1594	my @logins;
		1595
		1596	for my $login (@$dirs) {
		1597	my $path = path $login;
		1598
		1599	# a .pst is a dead give-away for a valid player
		1600	# if no pst file found, open and chekc for blocked users
		1601	if (aio_stat "$path.pst") {
		1602	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1603	aio_read $fh, 0, 512, my $buf, 0 or next;
		1604	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1605	}
		1606
		1607	utf8::decode $login;
		1608	push @logins, $login;
		1609	}
		1610
		1611	\@logins
		1612	}
		1613
		1614	=item $player->maps
		1615
		1616	Returns an arrayref of map paths that are private for this
		1617	player. May block.
		1618
		1619	=cut
		1620
		1621	sub maps($) {
		1622	my ($pl) = @_;
		1623
		1624	$pl = ref $pl ? $pl->ob->name : $pl;
		1625
		1626	my $files = aio_readdir playerdir $pl
		1627	or return;
		1628
		1629	my @paths;
		1630
		1631	for (@$files) {
		1632	utf8::decode $_;
		1633	next if /\.(?:pl|pst)$/;
		1634	next unless /^$PATH_SEP/o;
		1635
		1636	push @paths, cf::map::normalise "~$pl/$_";
		1637	}
		1638
		1639	\@paths
		1640	}
		1641
		1642	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1643
		1644	Expand deliantra pod fragments into protocol xml.
		1645
		1646	=item $player->ext_reply ($msgid, @msg)
		1647
		1648	Sends an ext reply to the player.
		1649
		1650	=cut
		1651
		1652	sub ext_reply($$@) {
		1653	my ($self, $id, @msg) = @_;
		1654
		1655	$self->ns->ext_reply ($id, @msg)
		1656	}
		1657
		1658	=item $player->ext_msg ($type, @msg)
		1659
		1660	Sends an ext event to the client.
		1661
		1662	=cut
		1663
		1664	sub ext_msg($$@) {
		1665	my ($self, $type, @msg) = @_;
		1666
		1667	$self->ns->ext_msg ($type, @msg);
		1668	}
		1669
		1670	=head3 cf::region
		1671
		1672	=over 4
		1673
		1674	=cut
		1675
		1676	package cf::region;
		1677
		1678	=item cf::region::find_by_path $path
		1679
		1680	Tries to decuce the likely region for a map knowing only its path.
		1681
		1682	=cut
		1683
		1684	sub find_by_path($) {
		1685	my ($path) = @_;
		1686
		1687	my ($match, $specificity);
		1688
		1689	for my $region (list) {
		1690	if ($region->{match} && $path =~ $region->{match}) {
		1691	($match, $specificity) = ($region, $region->specificity)
		1692	if $region->specificity > $specificity;
		1693	}
		1694	}
		1695
		1696	$match
		1697	}
		1698
		1699	=back
		1700
		1701	=head3 cf::map
		1702
		1703	=over 4
		1704
		1705	=cut
		1706
		1707	package cf::map;
		1708
		1709	use Fcntl;
		1710	use Coro::AIO;
		1711
		1712	use overload
		1713	'""' => \&as_string,
		1714	fallback => 1;
		1715
		1716	our $MAX_RESET = 3600;
		1717	our $DEFAULT_RESET = 3000;
		1718
		1719	sub generate_random_map {
		1720	my ($self, $rmp) = @_;
		1721
		1722	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1723
		1724	# mit "rum" bekleckern, nicht
		1725	$self->_create_random_map (
		1726	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1727	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1728	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1729	$rmp->{exit_on_final_map},
		1730	$rmp->{xsize}, $rmp->{ysize},
		1731	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1732	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1733	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1734	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1735	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1736	(cf::region::find $rmp->{region}), $rmp->{custom}
		1737	)
		1738	}
		1739
		1740	=item cf::map->register ($regex, $prio)
		1741
		1742	Register a handler for the map path matching the given regex at the
		1743	givne priority (higher is better, built-in handlers have priority 0, the
		1744	default).
		1745
		1746	=cut
		1747
692	sub register {	1748	sub register {
		1749	my (undef, $regex, $prio) = @_;
		1750	my $pkg = caller;
		1751
		1752	no strict;
		1753	push @{"$pkg\::ISA"}, __PACKAGE__;
		1754
		1755	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1756	}
		1757
		1758	# also paths starting with '/'
		1759	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1760
		1761	sub thawer_merge {
693	my ($base, $pkg) = @_;	1762	my ($self, $merge) = @_;
694		1763
695	#TODO	1764	# we have to keep some variables in memory intact
696	}	1765	local $self->{path};
		1766	local $self->{load_path};
697		1767
698	sub load_extension {	1768	$self->SUPER::thawer_merge ($merge);
		1769	}
		1770
		1771	sub normalise {
699	my ($path) = @_;	1772	my ($path, $base) = @_;
700		1773
701	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1774	$path = "$path"; # make sure its a string
702	my $base = $1;
703	my $pkg = $1;
704	$pkg =~ s/[^[:word:]]/_/g;
705	$pkg = "ext::$pkg";
706		1775
707	warn "loading '$path' into '$pkg'\n";	1776	$path =~ s/\.map$//;
708		1777
709	open my $fh, "<:utf8", $path	1778	# map plan:
710	or die "$path: $!";	1779	#
		1780	# /! non-realised random map exit (special hack!)
		1781	# {... are special paths that are not being touched
		1782	# ?xxx/... are special absolute paths
		1783	# ?random/... random maps
		1784	# /... normal maps
		1785	# ~user/... per-player map of a specific user
711		1786
712	my $source =	1787	$path =~ s/$PATH_SEP/\//go;
713	"package $pkg; use strict; use utf8;\n"
714	. "#line 1 \"$path\"\n{\n"
715	. (do { local $/; <$fh> })
716	. "\n};\n1";
717		1788
718	eval $source	1789	# treat it as relative path if it starts with
719	or die $@ ? "$path: $@\n"	1790	# something that looks reasonable
720	: "extension disabled.\n";	1791	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1792	$base or Carp::carp "normalise called with relative path and no base: '$path'";
721		1793
722	push @exts, $pkg;	1794	$base =~ s{[^/]+/?$}{};
723	$ext_pkg{$base} = $pkg;	1795	$path = "$base/$path";
724
725	# no strict 'refs';
726	# @{"$pkg\::ISA"} = ext::;
727
728	register $base, $pkg;
729	}
730
731	sub unload_extension {
732	my ($pkg) = @_;
733
734	warn "removing extension $pkg\n";
735
736	# remove hooks
737	#TODO
738	# for my $idx (0 .. $#PLUGIN_EVENT) {
739	# delete $hook[$idx]{$pkg};
740	# }	1796	}
741		1797
742	# remove commands	1798	for ($path) {
743	for my $name (keys %COMMAND) {	1799	redo if s{//}{/};
744	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1800	redo if s{/\.?/}{/};
		1801	redo if s{/[^/]+/\.\./}{/};
		1802	}
745		1803
746	if (@cb) {	1804	$path
747	$COMMAND{$name} = \@cb;	1805	}
		1806
		1807	sub new_from_path {
		1808	my (undef, $path, $base) = @_;
		1809
		1810	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1811
		1812	$path = normalise $path, $base;
		1813
		1814	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1815	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1816	my $self = bless cf::map::new, $pkg;
		1817	$self->{path} = $path; $self->path ($path);
		1818	$self->init; # pass $1 etc.
		1819	return $self;
		1820	}
		1821	}
		1822
		1823	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1824	()
		1825	}
		1826
		1827	sub init {
		1828	my ($self) = @_;
		1829
		1830	$self
		1831	}
		1832
		1833	sub as_string {
		1834	my ($self) = @_;
		1835
		1836	"$self->{path}"
		1837	}
		1838
		1839	# the displayed name, this is a one way mapping
		1840	sub visible_name {
		1841	&as_string
		1842	}
		1843
		1844	# the original (read-only) location
		1845	sub load_path {
		1846	my ($self) = @_;
		1847
		1848	"$MAPDIR/$self->{path}.map"
		1849	}
		1850
		1851	# the temporary/swap location
		1852	sub save_path {
		1853	my ($self) = @_;
		1854
		1855	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1856	"$TMPDIR/$path.map"
		1857	}
		1858
		1859	# the unique path, undef == no special unique path
		1860	sub uniq_path {
		1861	my ($self) = @_;
		1862
		1863	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		1864	"$UNIQUEDIR/$path"
		1865	}
		1866
		1867	# and all this just because we cannot iterate over
		1868	# all maps in C++...
		1869	sub change_all_map_light {
		1870	my ($change) = @_;
		1871
		1872	$_->change_map_light ($change)
		1873	for grep $_->outdoor, values %cf::MAP;
		1874	}
		1875
		1876	sub decay_objects {
		1877	my ($self) = @_;
		1878
		1879	return if $self->{deny_reset};
		1880
		1881	$self->do_decay_objects;
		1882	}
		1883
		1884	sub unlink_save {
		1885	my ($self) = @_;
		1886
		1887	utf8::encode (my $save = $self->save_path);
		1888	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1889	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1890	}
		1891
		1892	sub load_header_from($) {
		1893	my ($self, $path) = @_;
		1894
		1895	utf8::encode $path;
		1896	my $f = new_from_file cf::object::thawer $path
		1897	or return;
		1898
		1899	$self->_load_header ($f)
		1900	or return;
		1901
		1902	local $MAP_LOADING{$self->{path}} = $self;
		1903	$f->resolve_delayed_derefs;
		1904
		1905	$self->{load_path} = $path;
		1906
		1907	1
		1908	}
		1909
		1910	sub load_header_orig {
		1911	my ($self) = @_;
		1912
		1913	$self->load_header_from ($self->load_path)
		1914	}
		1915
		1916	sub load_header_temp {
		1917	my ($self) = @_;
		1918
		1919	$self->load_header_from ($self->save_path)
		1920	}
		1921
		1922	sub prepare_temp {
		1923	my ($self) = @_;
		1924
		1925	$self->last_access ((delete $self->{last_access})
		1926	|| $cf::RUNTIME); #d#
		1927	# safety
		1928	$self->{instantiate_time} = $cf::RUNTIME
		1929	if $self->{instantiate_time} > $cf::RUNTIME;
		1930	}
		1931
		1932	sub prepare_orig {
		1933	my ($self) = @_;
		1934
		1935	$self->{load_original} = 1;
		1936	$self->{instantiate_time} = $cf::RUNTIME;
		1937	$self->last_access ($cf::RUNTIME);
		1938	$self->instantiate;
		1939	}
		1940
		1941	sub load_header {
		1942	my ($self) = @_;
		1943
		1944	if ($self->load_header_temp) {
		1945	$self->prepare_temp;
748	} else {	1946	} else {
749	delete $COMMAND{$name};	1947	$self->load_header_orig
750	}	1948	or return;
		1949	$self->prepare_orig;
		1950	}
		1951
		1952	$self->{deny_reset} = 1
		1953	if $self->no_reset;
		1954
		1955	$self->default_region (cf::region::find_by_path $self->{path})
		1956	unless $self->default_region;
		1957
751	}	1958	1
		1959	}
752		1960
753	# remove extcmds	1961	sub find;
754	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1962	sub find {
755	delete $EXTCMD{$name};	1963	my ($path, $origin) = @_;
		1964
		1965	$path = normalise $path, $origin && $origin->path;
		1966
		1967	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		1968	my $guard2 = cf::lock_acquire "map_find:$path";
		1969
		1970	$cf::MAP{$path} || do {
		1971	my $map = new_from_path cf::map $path
		1972	or return;
		1973
		1974	$map->{last_save} = $cf::RUNTIME;
		1975
		1976	$map->load_header
		1977	or return;
		1978
		1979	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1980	# doing this can freeze the server in a sync job, obviously
		1981	#$cf::WAIT_FOR_TICK->wait;
		1982	undef $guard2;
		1983	undef $guard1;
		1984	$map->reset;
		1985	return find $path;
		1986	}
		1987
		1988	$cf::MAP{$path} = $map
		1989	}
		1990	}
		1991
		1992	sub pre_load { }
		1993	sub post_load { }
		1994
		1995	sub load {
		1996	my ($self) = @_;
		1997
		1998	local $self->{deny_reset} = 1; # loading can take a long time
		1999
		2000	my $path = $self->{path};
		2001
756	}	2002	{
		2003	my $guard = cf::lock_acquire "map_data:$path";
757		2004
758	if (my $cb = $pkg->can ("unload")) {	2005	return unless $self->valid;
759	eval {	2006	return unless $self->in_memory == cf::MAP_SWAPPED;
760	$cb->($pkg);	2007
		2008	$self->in_memory (cf::MAP_LOADING);
		2009
		2010	$self->alloc;
		2011
		2012	$self->pre_load;
		2013	cf::cede_to_tick;
		2014
		2015	my $f = new_from_file cf::object::thawer $self->{load_path};
		2016	$f->skip_block;
		2017	$self->_load_objects ($f)
		2018	or return;
		2019
		2020	$self->post_load_original
		2021	if delete $self->{load_original};
		2022
		2023	if (my $uniq = $self->uniq_path) {
		2024	utf8::encode $uniq;
		2025	unless (aio_stat $uniq) {
		2026	if (my $f = new_from_file cf::object::thawer $uniq) {
		2027	$self->clear_unique_items;
		2028	$self->_load_objects ($f);
		2029	$f->resolve_delayed_derefs;
		2030	}
761	1	2031	}
762	} or warn "$pkg unloaded, but with errors: $@";	2032	}
763	}
764		2033
765	Symbol::delete_package $pkg;	2034	$f->resolve_delayed_derefs;
766	}
767		2035
768	sub load_extensions {	2036	cf::cede_to_tick;
769	for my $ext (<$LIBDIR/*.ext>) {	2037	# now do the right thing for maps
770	next unless -r $ext;	2038	$self->link_multipart_objects;
771	eval {	2039	$self->difficulty ($self->estimate_difficulty)
772	load_extension $ext;	2040	unless $self->difficulty;
773	1	2041	cf::cede_to_tick;
774	} or warn "$ext not loaded: $@";
775	}
776	}
777		2042
778	#############################################################################	2043	unless ($self->{deny_activate}) {
779	# load/save/clean perl data associated with a map	2044	$self->decay_objects;
		2045	$self->fix_auto_apply;
		2046	$self->update_buttons;
		2047	cf::cede_to_tick;
		2048	$self->set_darkness_map;
		2049	cf::cede_to_tick;
		2050	$self->activate;
		2051	}
780		2052
781	*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	$self
		2072	}
		2073
		2074	# find and load all maps in the 3x3 area around a map
		2075	sub load_neighbours {
782	my ($map) = @_;	2076	my ($map) = @_;
783		2077
784	my $path = $map->tmpname;	2078	my @neigh; # diagonal neighbours
785	defined $path or return;
786		2079
787	unlink "$path.pst";	2080	for (0 .. 3) {
788	};	2081	my $neigh = $map->tile_path ($_)
		2082	or next;
		2083	$neigh = find $neigh, $map
		2084	or next;
		2085	$neigh->load;
789		2086
790	cf::map->attach (prio => -10000, package => cf::mapsupport::);	2087	push @neigh,
		2088	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2089	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2090	}
791		2091
792	#############################################################################	2092	for (grep defined $_->[0], @neigh) {
793	# load/save perl data associated with player->ob objects	2093	my ($path, $origin) = @$_;
794		2094	my $neigh = find $path, $origin
795	sub all_objects(@) {	2095	or next;
796	@_, map all_objects ($_->inv), @_	2096	$neigh->load;
		2097	}
797	}	2098	}
798		2099
799	# TODO: compatibility cruft, remove when no longer needed	2100	sub find_sync {
800	cf::player->attach (	2101	my ($path, $origin) = @_;
801	on_load => sub {
802	my ($pl, $path) = @_;
803		2102
804	for my $o (all_objects $pl->ob) {	2103	cf::sync_job { find $path, $origin }
805	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2104	}
806	$o->set_ob_key_value ("_perl_data");
807		2105
808	%$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};
809	}	2139	}
810	}	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);
811	},	2178	}
812	);	2179	}
813		2180
814	#############################################################################	2181	sub swap_out {
		2182	my ($self) = @_;
815		2183
816	=head2 CORE EXTENSIONS	2184	# save first because save cedes
		2185	$self->save;
817		2186
818	Functions and methods that extend core crossfire objects.	2187	my $lock = cf::lock_acquire "map_data:$self->{path}";
819		2188
820	=head3 cf::player	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;
821		2333
822	=over 4	2334	=over 4
823		2335
824	=item cf::player::exists $login	2336	=item $ob->inv_recursive
825		2337
826	Returns true when the given account exists.	2338	Returns the inventory of the object I<and> their inventories, recursively,
		2339	but I<not> the object itself.
827		2340
828	=cut	2341	=cut
829		2342
830	sub cf::player::exists($) {	2343	sub inv_recursive_;
831	cf::player::find $_[0]	2344	sub inv_recursive_ {
832	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2345	map { $_, inv_recursive_ $_->inv } @_
833	}	2346	}
834		2347
835	=item $player->ext_reply ($msgid, $msgtype, %msg)	2348	sub inv_recursive {
836		2349	inv_recursive_ inv $_[0]
837	Sends an ext reply to the player.
838
839	=cut
840
841	sub cf::player::ext_reply($$$%) {
842	my ($self, $id, %msg) = @_;
843
844	$msg{msgid} = $id;
845
846	$self->send ("ext " . to_json \%msg);
847	}	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;
848		2381
849	=back	2382	=back
850		2383
851	=head3 cf::object::player	2384	=head3 cf::object::player
852		2385
…		…
857	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>
858	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
859	dialogue with the given NPC character.	2392	dialogue with the given NPC character.
860		2393
861	=cut	2394	=cut
		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	};
862		2409
863	# rough implementation of a future "reply" method that works	2410	# rough implementation of a future "reply" method that works
864	# with dialog boxes.	2411	# with dialog boxes.
865	#TODO: the first argument must go, split into a $npc->reply_to ( method	2412	#TODO: the first argument must go, split into a $npc->reply_to ( method
866	sub cf::object::player::reply($$$;$) {	2413	sub cf::object::player::reply($$$;$) {
…		…
868		2415
869	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2416	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
870		2417
871	if ($self->{record_replies}) {	2418	if ($self->{record_replies}) {
872	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2419	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2420
873	} 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 {
874	$msg = $npc->name . " says: $msg" if $npc;	2429	$msg = $npc->name . " says: $msg" if $npc;
875	$self->message ($msg, $flags);	2430	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2431	}
876	}	2432	}
		2433	}
		2434
		2435	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2436
		2437	=cut
		2438
		2439	sub cf::object::send_msg {
		2440	my $pl = shift->contr
		2441	or return;
		2442	$pl->send_msg (@_);
877	}	2443	}
878		2444
879	=item $player_object->may ("access")	2445	=item $player_object->may ("access")
880		2446
881	Returns wether the given player is authorized to access resource "access"	2447	Returns wether the given player is authorized to access resource "access"
…		…
890	(ref $cf::CFG{"may_$access"}	2456	(ref $cf::CFG{"may_$access"}
891	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2457	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
892	: $cf::CFG{"may_$access"})	2458	: $cf::CFG{"may_$access"})
893	}	2459	}
894		2460
		2461	=item $player_object->enter_link
		2462
		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	$self->flag (cf::FLAG_DEBUG, 0);#d# temp
		2537	$self->activate_recursive;
		2538
		2539	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2540	$self->enter_map ($map, $x, $y);
		2541	}
		2542
		2543	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2544
		2545	Moves the player to the given map-path and coordinates by first freezing
		2546	her, loading and preparing them map, calling the provided $check callback
		2547	that has to return the map if sucecssful, and then unfreezes the player on
		2548	the new (success) or old (failed) map position. In either case, $done will
		2549	be called at the end of this process.
		2550
		2551	Note that $check will be called with a potentially non-loaded map, so if
		2552	it needs a loaded map it has to call C<< ->load >>.
		2553
		2554	=cut
		2555
		2556	our $GOTOGEN;
		2557
		2558	sub cf::object::player::goto {
		2559	my ($self, $path, $x, $y, $check, $done) = @_;
		2560
		2561	# do generation counting so two concurrent goto's will be executed in-order
		2562	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2563
		2564	$self->enter_link;
		2565
		2566	(async {
		2567	$Coro::current->{desc} = "player::goto $path $x $y";
		2568
		2569	# *tag paths override both path and x|y
		2570	if ($path =~ /^\*(.*)$/) {
		2571	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2572	my $ob = $obs[rand @obs];
		2573
		2574	# see if we actually can go there
		2575	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2576	$ob = $obs[rand @obs];
		2577	} else {
		2578	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2579	}
		2580	# else put us there anyways for now #d#
		2581
		2582	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2583	} else {
		2584	($path, $x, $y) = (undef, undef, undef);
		2585	}
		2586	}
		2587
		2588	my $map = eval {
		2589	my $map = defined $path ? cf::map::find $path : undef;
		2590
		2591	if ($map) {
		2592	$map = $map->customise_for ($self);
		2593	$map = $check->($map) if $check && $map;
		2594	} else {
		2595	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2596	}
		2597
		2598	$map
		2599	};
		2600
		2601	if ($@) {
		2602	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2603	LOG llevError | logBacktrace, Carp::longmess $@;
		2604	}
		2605
		2606	if ($gen == $self->{_goto_generation}) {
		2607	delete $self->{_goto_generation};
		2608	$self->leave_link ($map, $x, $y);
		2609	}
		2610
		2611	$done->() if $done;
		2612	})->prio (1);
		2613	}
		2614
		2615	=item $player_object->enter_exit ($exit_object)
		2616
		2617	=cut
		2618
		2619	sub parse_random_map_params {
		2620	my ($spec) = @_;
		2621
		2622	my $rmp = { # defaults
		2623	xsize => (cf::rndm 15, 40),
		2624	ysize => (cf::rndm 15, 40),
		2625	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2626	#layout => string,
		2627	};
		2628
		2629	for (split /\n/, $spec) {
		2630	my ($k, $v) = split /\s+/, $_, 2;
		2631
		2632	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2633	}
		2634
		2635	$rmp
		2636	}
		2637
		2638	sub prepare_random_map {
		2639	my ($exit) = @_;
		2640
		2641	# all this does is basically replace the /! path by
		2642	# a new random map path (?random/...) with a seed
		2643	# that depends on the exit object
		2644
		2645	my $rmp = parse_random_map_params $exit->msg;
		2646
		2647	if ($exit->map) {
		2648	$rmp->{region} = $exit->region->name;
		2649	$rmp->{origin_map} = $exit->map->path;
		2650	$rmp->{origin_x} = $exit->x;
		2651	$rmp->{origin_y} = $exit->y;
		2652
		2653	$exit->map->touch;
		2654	}
		2655
		2656	$rmp->{random_seed} ||= $exit->random_seed;
		2657
		2658	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2659	my $md5 = Digest::MD5::md5_hex $data;
		2660	my $meta = "$RANDOMDIR/$md5.meta";
		2661
		2662	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2663	aio_write $fh, 0, (length $data), $data, 0;
		2664	undef $fh;
		2665	aio_rename "$meta~", $meta;
		2666
		2667	my $slaying = "?random/$md5";
		2668
		2669	if ($exit->valid) {
		2670	$exit->slaying ("?random/$md5");
		2671	$exit->msg (undef);
		2672	}
		2673	}
		2674	}
		2675
		2676	sub cf::object::player::enter_exit {
		2677	my ($self, $exit) = @_;
		2678
		2679	return unless $self->type == cf::PLAYER;
		2680
		2681	$self->enter_link;
		2682
		2683	(async {
		2684	$Coro::current->{desc} = "enter_exit";
		2685
		2686	unless (eval {
		2687	$self->deactivate_recursive; # just to be sure
		2688
		2689	# random map handling
		2690	{
		2691	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2692
		2693	prepare_random_map $exit
		2694	if $exit->slaying eq "/!";
		2695	}
		2696
		2697	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2698	my $x = $exit->stats->hp;
		2699	my $y = $exit->stats->sp;
		2700
		2701	$self->goto ($map, $x, $y);
		2702
		2703	# if exit is damned, update players death & WoR home-position
		2704	$self->contr->savebed ($map, $x, $y)
		2705	if $exit->flag (cf::FLAG_DAMNED);
		2706
		2707	1
		2708	}) {
		2709	$self->message ("Something went wrong deep within the deliantra server. "
		2710	. "I'll try to bring you back to the map you were before. "
		2711	. "Please report this to the dungeon master!",
		2712	cf::NDI_UNIQUE | cf::NDI_RED);
		2713
		2714	warn "ERROR in enter_exit: $@";
		2715	$self->leave_link;
		2716	}
		2717	})->prio (1);
		2718	}
		2719
895	=head3 cf::client	2720	=head3 cf::client
896		2721
897	=over 4	2722	=over 4
898		2723
899	=item $client->send_drawinfo ($text, $flags)	2724	=item $client->send_drawinfo ($text, $flags)
…		…
905		2730
906	sub cf::client::send_drawinfo {	2731	sub cf::client::send_drawinfo {
907	my ($self, $text, $flags) = @_;	2732	my ($self, $text, $flags) = @_;
908		2733
909	utf8::encode $text;	2734	utf8::encode $text;
910	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2735	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
911	}	2736	}
912		2737
		2738	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2739
		2740	Send a drawinfo or msg packet to the client, formatting the msg for the
		2741	client if neccessary. C<$type> should be a string identifying the type of
		2742	the message, with C<log> being the default. If C<$color> is negative, suppress
		2743	the message unless the client supports the msg packet.
		2744
		2745	=cut
		2746
		2747	# non-persistent channels (usually the info channel)
		2748	our %CHANNEL = (
		2749	"c/identify" => {
		2750	id => "infobox",
		2751	title => "Identify",
		2752	reply => undef,
		2753	tooltip => "Items recently identified",
		2754	},
		2755	"c/examine" => {
		2756	id => "infobox",
		2757	title => "Examine",
		2758	reply => undef,
		2759	tooltip => "Signs and other items you examined",
		2760	},
		2761	"c/book" => {
		2762	id => "infobox",
		2763	title => "Book",
		2764	reply => undef,
		2765	tooltip => "The contents of a note or book",
		2766	},
		2767	"c/lookat" => {
		2768	id => "infobox",
		2769	title => "Look",
		2770	reply => undef,
		2771	tooltip => "What you saw there",
		2772	},
		2773	"c/who" => {
		2774	id => "infobox",
		2775	title => "Players",
		2776	reply => undef,
		2777	tooltip => "Shows players who are currently online",
		2778	},
		2779	"c/body" => {
		2780	id => "infobox",
		2781	title => "Body Parts",
		2782	reply => undef,
		2783	tooltip => "Shows which body parts you posess and are available",
		2784	},
		2785	"c/skills" => {
		2786	id => "infobox",
		2787	title => "Skills",
		2788	reply => undef,
		2789	tooltip => "Shows your experience per skill and item power",
		2790	},
		2791	"c/uptime" => {
		2792	id => "infobox",
		2793	title => "Uptime",
		2794	reply => undef,
		2795	tooltip => "How long the server has been running since last restart",
		2796	},
		2797	"c/mapinfo" => {
		2798	id => "infobox",
		2799	title => "Map Info",
		2800	reply => undef,
		2801	tooltip => "Information related to the maps",
		2802	},
		2803	"c/party" => {
		2804	id => "party",
		2805	title => "Party",
		2806	reply => "gsay ",
		2807	tooltip => "Messages and chat related to your party",
		2808	},
		2809	);
		2810
		2811	sub cf::client::send_msg {
		2812	my ($self, $channel, $msg, $color, @extra) = @_;
		2813
		2814	$msg = $self->pl->expand_cfpod ($msg)
		2815	unless $color & cf::NDI_VERBATIM;
		2816
		2817	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2818
		2819	# check predefined channels, for the benefit of C
		2820	if ($CHANNEL{$channel}) {
		2821	$channel = $CHANNEL{$channel};
		2822
		2823	$self->ext_msg (channel_info => $channel)
		2824	if $self->can_msg;
		2825
		2826	$channel = $channel->{id};
		2827
		2828	} elsif (ref $channel) {
		2829	# send meta info to client, if not yet sent
		2830	unless (exists $self->{channel}{$channel->{id}}) {
		2831	$self->{channel}{$channel->{id}} = $channel;
		2832	$self->ext_msg (channel_info => $channel)
		2833	if $self->can_msg;
		2834	}
		2835
		2836	$channel = $channel->{id};
		2837	}
		2838
		2839	return unless @extra || length $msg;
		2840
		2841	if ($self->can_msg) {
		2842	# default colour, mask it out
		2843	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2844	if $color & cf::NDI_DEF;
		2845
		2846	my $pkt = "msg "
		2847	. $self->{json_coder}->encode (
		2848	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2849	);
		2850
		2851	# try lzf for large packets
		2852	$pkt = "lzf " . Compress::LZF::compress $pkt
		2853	if 1024 <= length $pkt and $self->{can_lzf};
		2854
		2855	# split very large packets
		2856	if (8192 < length $pkt and $self->{can_lzf}) {
		2857	$self->send_packet ("frag $_") for unpack "(a8192)*", $pkt;
		2858	$pkt = "frag";
		2859	}
		2860
		2861	$self->send_packet ($pkt);
		2862	} else {
		2863	if ($color >= 0) {
		2864	# replace some tags by gcfclient-compatible ones
		2865	for ($msg) {
		2866	1 while
		2867	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2868	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2869	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2870	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2871	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2872	}
		2873
		2874	$color &= cf::NDI_COLOR_MASK;
		2875
		2876	utf8::encode $msg;
		2877
		2878	if (0 && $msg =~ /\[/) {
		2879	# COMMAND/INFO
		2880	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2881	} else {
		2882	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2883	$self->send_packet ("drawinfo $color $msg")
		2884	}
		2885	}
		2886	}
		2887	}
		2888
		2889	=item $client->ext_msg ($type, @msg)
		2890
		2891	Sends an ext event to the client.
		2892
		2893	=cut
		2894
		2895	sub cf::client::ext_msg($$@) {
		2896	my ($self, $type, @msg) = @_;
		2897
		2898	if ($self->extcmd == 2) {
		2899	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2900	} elsif ($self->extcmd == 1) { # TODO: remove
		2901	push @msg, msgtype => "event_$type";
		2902	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2903	}
		2904	}
		2905
		2906	=item $client->ext_reply ($msgid, @msg)
		2907
		2908	Sends an ext reply to the client.
		2909
		2910	=cut
		2911
		2912	sub cf::client::ext_reply($$@) {
		2913	my ($self, $id, @msg) = @_;
		2914
		2915	if ($self->extcmd == 2) {
		2916	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2917	} elsif ($self->extcmd == 1) {
		2918	#TODO: version 1, remove
		2919	unshift @msg, msgtype => "reply", msgid => $id;
		2920	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2921	}
		2922	}
913		2923
914	=item $success = $client->query ($flags, "text", \&cb)	2924	=item $success = $client->query ($flags, "text", \&cb)
915		2925
916	Queues a query to the client, calling the given callback with	2926	Queues a query to the client, calling the given callback with
917	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2927	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
918	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2928	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
919		2929
920	Queries can fail, so check the return code. Or don't, as queries will become	2930	Queries can fail, so check the return code. Or don't, as queries will
921	reliable at some point in the future.	2931	become reliable at some point in the future.
922		2932
923	=cut	2933	=cut
924		2934
925	sub cf::client::query {	2935	sub cf::client::query {
926	my ($self, $flags, $text, $cb) = @_;	2936	my ($self, $flags, $text, $cb) = @_;
…		…
934	utf8::encode $text;	2944	utf8::encode $text;
935	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2945	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
936		2946
937	$self->send_packet ($self->{query_queue}[0][0])	2947	$self->send_packet ($self->{query_queue}[0][0])
938	if @{ $self->{query_queue} } == 1;	2948	if @{ $self->{query_queue} } == 1;
		2949
		2950	1
939	}	2951	}
940		2952
941	cf::client->attach (	2953	cf::client->attach (
		2954	on_connect => sub {
		2955	my ($ns) = @_;
		2956
		2957	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2958	},
942	on_reply => sub {	2959	on_reply => sub {
943	my ($ns, $msg) = @_;	2960	my ($ns, $msg) = @_;
944		2961
945	# this weird shuffling is so that direct followup queries	2962	# this weird shuffling is so that direct followup queries
946	# get handled first	2963	# get handled first
947	my $queue = delete $ns->{query_queue};	2964	my $queue = delete $ns->{query_queue}
		2965	or return; # be conservative, not sure how that can happen, but we saw a crash here
948		2966
949	(shift @$queue)->[1]->($msg);	2967	(shift @$queue)->[1]->($msg);
		2968	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
950		2969
951	push @{ $ns->{query_queue} }, @$queue;	2970	push @{ $ns->{query_queue} }, @$queue;
952		2971
953	if (@{ $ns->{query_queue} } == @$queue) {	2972	if (@{ $ns->{query_queue} } == @$queue) {
954	if (@$queue) {	2973	if (@$queue) {
…		…
956	} else {	2975	} else {
957	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2976	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
958	}	2977	}
959	}	2978	}
960	},	2979	},
		2980	on_exticmd => sub {
		2981	my ($ns, $buf) = @_;
		2982
		2983	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2984
		2985	if (ref $msg) {
		2986	my ($type, $reply, @payload) =
		2987	"ARRAY" eq ref $msg
		2988	? @$msg
		2989	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2990
		2991	my @reply;
		2992
		2993	if (my $cb = $EXTICMD{$type}) {
		2994	@reply = $cb->($ns, @payload);
		2995	}
		2996
		2997	$ns->ext_reply ($reply, @reply)
		2998	if $reply;
		2999
		3000	} else {
		3001	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3002	}
		3003
		3004	cf::override;
		3005	},
961	);	3006	);
962		3007
963	=item $client->coro (\&cb)	3008	=item $client->async (\&cb)
964		3009
965	Create a new coroutine, running the specified callback. The coroutine will	3010	Create a new coroutine, running the specified callback. The coroutine will
966	be automatically cancelled when the client gets destroyed (e.g. on logout,	3011	be automatically cancelled when the client gets destroyed (e.g. on logout,
967	or loss of connection).	3012	or loss of connection).
968		3013
969	=cut	3014	=cut
970		3015
971	sub cf::client::coro {	3016	sub cf::client::async {
972	my ($self, $cb) = @_;	3017	my ($self, $cb) = @_;
973		3018
974	my $coro; $coro = async {	3019	my $coro = &Coro::async ($cb);
975	eval {
976	$cb->();
977	};
978	warn $@ if $@;
979	};
980		3020
981	$coro->on_destroy (sub {	3021	$coro->on_destroy (sub {
982	delete $self->{_coro}{$coro+0};	3022	delete $self->{_coro}{$coro+0};
983	});	3023	});
984		3024
…		…
1011	our $safe = new Safe "safe";	3051	our $safe = new Safe "safe";
1012	our $safe_hole = new Safe::Hole;	3052	our $safe_hole = new Safe::Hole;
1013		3053
1014	$SIG{FPE} = 'IGNORE';	3054	$SIG{FPE} = 'IGNORE';
1015		3055
1016	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3056	$safe->permit_only (Opcode::opset qw(
		3057	:base_core :base_mem :base_orig :base_math
		3058	grepstart grepwhile mapstart mapwhile
		3059	sort time
		3060	));
1017		3061
1018	# here we export the classes and methods available to script code	3062	# here we export the classes and methods available to script code
1019		3063
1020	=pod	3064	=pod
1021		3065
1022	The following fucntions and emthods are available within a safe environment:	3066	The following functions and methods are available within a safe environment:
1023		3067
1024	cf::object contr pay_amount pay_player map	3068	cf::object
		3069	contr pay_amount pay_player map x y force_find force_add destroy
		3070	insert remove name archname title slaying race decrease split
		3071
1025	cf::object::player player	3072	cf::object::player
1026	cf::player peaceful	3073	player
1027	cf::map trigger	3074
		3075	cf::player
		3076	peaceful
		3077
		3078	cf::map
		3079	trigger
1028		3080
1029	=cut	3081	=cut
1030		3082
1031	for (	3083	for (
1032	["cf::object" => qw(contr pay_amount pay_player map)],	3084	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3085	insert remove inv nrof name archname title slaying race
		3086	decrease split destroy change_exp)],
1033	["cf::object::player" => qw(player)],	3087	["cf::object::player" => qw(player)],
1034	["cf::player" => qw(peaceful)],	3088	["cf::player" => qw(peaceful)],
1035	["cf::map" => qw(trigger)],	3089	["cf::map" => qw(trigger)],
1036	) {	3090	) {
1037	no strict 'refs';	3091	no strict 'refs';
…		…
1108	=back	3162	=back
1109		3163
1110	=cut	3164	=cut
1111		3165
1112	#############################################################################	3166	#############################################################################
		3167	# the server's init and main functions
1113		3168
1114	=head2 EXTENSION DATABASE SUPPORT	3169	sub load_facedata($) {
		3170	my ($path) = @_;
1115		3171
1116	Crossfire maintains a very simple database for extension use. It can	3172	# HACK to clear player env face cache, we need some signal framework
1117	currently store anything that can be serialised using Storable, which	3173	# for this (global event?)
1118	excludes objects.	3174	%ext::player_env::MUSIC_FACE_CACHE = ();
1119		3175
1120	The parameter C<$family> should best start with the name of the extension	3176	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1121	using it, it should be unique.
1122		3177
1123	=over 4	3178	warn "loading facedata from $path\n";
1124		3179
1125	=item $hashref = cf::db_get $family	3180	my $facedata;
		3181	0 < aio_load $path, $facedata
		3182	or die "$path: $!";
1126		3183
1127	Return a hashref for use by the extension C<$family>, which can be	3184	$facedata = Coro::Storable::thaw $facedata;
1128	modified. After modifications, you have to call C<cf::db_dirty> or
1129	C<cf::db_sync>.
1130		3185
1131	=item $value = cf::db_get $family => $key	3186	$facedata->{version} == 2
		3187	or cf::cleanup "$path: version mismatch, cannot proceed.";
1132		3188
1133	Returns a single value from the database	3189	# patch in the exptable
		3190	$facedata->{resource}{"res/exp_table"} = {
		3191	type => FT_RSRC,
		3192	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
		3193	};
		3194	cf::cede_to_tick;
1134		3195
1135	=item cf::db_put $family => $hashref	3196	{
		3197	my $faces = $facedata->{faceinfo};
1136		3198
1137	Stores the given family hashref into the database. Updates are delayed, if	3199	while (my ($face, $info) = each %$faces) {
1138	you want the data to be synced to disk immediately, use C<cf::db_sync>.	3200	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1139		3201
1140	=item cf::db_put $family => $key => $value	3202	cf::face::set_visibility $idx, $info->{visibility};
		3203	cf::face::set_magicmap $idx, $info->{magicmap};
		3204	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		3205	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1141		3206
1142	Stores the given C<$value> in the family hash. Updates are delayed, if you	3207	cf::cede_to_tick;
1143	want the data to be synced to disk immediately, use C<cf::db_sync>.	3208	}
1144		3209
1145	=item cf::db_dirty	3210	while (my ($face, $info) = each %$faces) {
		3211	next unless $info->{smooth};
1146		3212
1147	Marks the database as dirty, to be updated at a later time.	3213	my $idx = cf::face::find $face
		3214	or next;
1148		3215
1149	=item cf::db_sync	3216	if (my $smooth = cf::face::find $info->{smooth}) {
		3217	cf::face::set_smooth $idx, $smooth;
		3218	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3219	} else {
		3220	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3221	}
1150		3222
1151	Immediately write the database to disk I<if it is dirty>.	3223	cf::cede_to_tick;
		3224	}
		3225	}
1152		3226
1153	=cut	3227	{
		3228	my $anims = $facedata->{animinfo};
1154		3229
1155	our $DB;	3230	while (my ($anim, $info) = each %$anims) {
		3231	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3232	cf::cede_to_tick;
		3233	}
		3234
		3235	cf::anim::invalidate_all; # d'oh
		3236	}
		3237
		3238	{
		3239	# TODO: for gcfclient pleasure, we should give resources
		3240	# that gcfclient doesn't grok a >10000 face index.
		3241	my $res = $facedata->{resource};
		3242
		3243	while (my ($name, $info) = each %$res) {
		3244	if (defined $info->{type}) {
		3245	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3246	my $data;
		3247
		3248	if ($info->{type} & 1) {
		3249	# prepend meta info
		3250
		3251	my $meta = $enc->encode ({
		3252	name => $name,
		3253	%{ $info->{meta} || {} },
		3254	});
		3255
		3256	$data = pack "(w/a*)*", $meta, $info->{data};
		3257	} else {
		3258	$data = $info->{data};
		3259	}
		3260
		3261	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3262	cf::face::set_type $idx, $info->{type};
		3263	} else {
		3264	$RESOURCE{$name} = $info;
		3265	}
		3266
		3267	cf::cede_to_tick;
		3268	}
		3269	}
		3270
		3271	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3272
		3273	1
		3274	}
		3275
		3276	cf::global->attach (on_resource_update => sub {
		3277	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3278	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3279
		3280	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3281	my $sound = $soundconf->{compat}[$_]
		3282	or next;
		3283
		3284	my $face = cf::face::find "sound/$sound->[1]";
		3285	cf::sound::set $sound->[0] => $face;
		3286	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3287	}
		3288
		3289	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3290	my $face = cf::face::find "sound/$v";
		3291	cf::sound::set $k => $face;
		3292	}
		3293	}
		3294	});
		3295
		3296	register_exticmd fx_want => sub {
		3297	my ($ns, $want) = @_;
		3298
		3299	while (my ($k, $v) = each %$want) {
		3300	$ns->fx_want ($k, $v);
		3301	}
		3302	};
		3303
		3304	sub load_resource_file($) {
		3305	my $guard = lock_acquire "load_resource_file";
		3306
		3307	my $status = load_resource_file_ $_[0];
		3308	get_slot 0.1, 100;
		3309	cf::arch::commit_load;
		3310
		3311	$status
		3312	}
		3313
		3314	sub reload_regions {
		3315	# HACK to clear player env face cache, we need some signal framework
		3316	# for this (global event?)
		3317	%ext::player_env::MUSIC_FACE_CACHE = ();
		3318
		3319	load_resource_file "$MAPDIR/regions"
		3320	or die "unable to load regions file\n";
		3321
		3322	for (cf::region::list) {
		3323	$_->{match} = qr/$_->{match}/
		3324	if exists $_->{match};
		3325	}
		3326	}
		3327
		3328	sub reload_facedata {
		3329	load_facedata "$DATADIR/facedata"
		3330	or die "unable to load facedata\n";
		3331	}
		3332
		3333	sub reload_archetypes {
		3334	load_resource_file "$DATADIR/archetypes"
		3335	or die "unable to load archetypes\n";
		3336	}
		3337
		3338	sub reload_treasures {
		3339	load_resource_file "$DATADIR/treasures"
		3340	or die "unable to load treasurelists\n";
		3341	}
		3342
		3343	sub reload_resources {
		3344	warn "reloading resource files...\n";
		3345
		3346	reload_facedata;
		3347	reload_archetypes;
		3348	reload_regions;
		3349	reload_treasures;
		3350
		3351	warn "finished reloading resource files\n";
		3352	}
		3353
		3354	sub reload_config {
		3355	open my $fh, "<:utf8", "$CONFDIR/config"
		3356	or return;
		3357
		3358	local $/;
		3359	*CFG = YAML::Load <$fh>;
		3360
		3361	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3362
		3363	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3364	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3365
		3366	if (exists $CFG{mlockall}) {
		3367	eval {
		3368	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3369	and die "WARNING: m(un)lockall failed: $!\n";
		3370	};
		3371	warn $@ if $@;
		3372	}
		3373	}
		3374
		3375	sub pidfile() {
		3376	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3377	or die "$PIDFILE: $!";
		3378	flock $fh, &Fcntl::LOCK_EX
		3379	or die "$PIDFILE: flock: $!";
		3380	$fh
		3381	}
		3382
		3383	# make sure only one server instance is running at any one time
		3384	sub atomic {
		3385	my $fh = pidfile;
		3386
		3387	my $pid = <$fh>;
		3388	kill 9, $pid if $pid > 0;
		3389
		3390	seek $fh, 0, 0;
		3391	print $fh $$;
		3392	}
		3393
		3394	sub main {
		3395	cf::init_globals; # initialise logging
		3396
		3397	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3398	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3399	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3400	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3401
		3402	cf::init_experience;
		3403	cf::init_anim;
		3404	cf::init_attackmess;
		3405	cf::init_dynamic;
		3406	cf::init_block;
		3407
		3408	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3409
		3410	# we must not ever block the main coroutine
		3411	local $Coro::idle = sub {
		3412	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3413	(async {
		3414	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3415	EV::loop EV::LOOP_ONESHOT;
		3416	})->prio (Coro::PRIO_MAX);
		3417	};
		3418
		3419	evthread_start IO::AIO::poll_fileno;
		3420
		3421	cf::sync_job {
		3422	reload_resources;
		3423	reload_config;
		3424	db_init;
		3425
		3426	cf::load_settings;
		3427	cf::load_materials;
		3428	cf::init_uuid;
		3429	cf::init_signals;
		3430	cf::init_commands;
		3431	cf::init_skills;
		3432
		3433	cf::init_beforeplay;
		3434
		3435	atomic;
		3436
		3437	load_extensions;
		3438
		3439	utime time, time, $RUNTIMEFILE;
		3440
		3441	# no (long-running) fork's whatsoever before this point(!)
		3442	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3443
		3444	(pop @POST_INIT)->(0) while @POST_INIT;
		3445	};
		3446
		3447	EV::loop;
		3448	}
		3449
		3450	#############################################################################
		3451	# initialisation and cleanup
		3452
		3453	# install some emergency cleanup handlers
		3454	BEGIN {
		3455	our %SIGWATCHER = ();
		3456	for my $signal (qw(INT HUP TERM)) {
		3457	$SIGWATCHER{$signal} = EV::signal $signal, sub {
		3458	cf::cleanup "SIG$signal";
		3459	};
		3460	}
		3461	}
		3462
		3463	sub write_runtime_sync {
		3464	# first touch the runtime file to show we are still running:
		3465	# the fsync below can take a very very long time.
		3466
		3467	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3468
		3469	my $guard = cf::lock_acquire "write_runtime";
		3470
		3471	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3472	or return;
		3473
		3474	my $value = $cf::RUNTIME + 90 + 10;
		3475	# 10 is the runtime save interval, for a monotonic clock
		3476	# 60 allows for the watchdog to kill the server.
		3477
		3478	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3479	and return;
		3480
		3481	# always fsync - this file is important
		3482	aio_fsync $fh
		3483	and return;
		3484
		3485	# touch it again to show we are up-to-date
		3486	aio_utime $fh, undef, undef;
		3487
		3488	close $fh
		3489	or return;
		3490
		3491	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3492	and return;
		3493
		3494	warn "runtime file written.\n";
		3495
		3496	1
		3497	}
		3498
		3499	our $uuid_lock;
		3500	our $uuid_skip;
		3501
		3502	sub write_uuid_sync($) {
		3503	$uuid_skip ||= $_[0];
		3504
		3505	return if $uuid_lock;
		3506	local $uuid_lock = 1;
		3507
		3508	my $uuid = "$LOCALDIR/uuid";
		3509
		3510	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3511	or return;
		3512
		3513	my $value = uuid_seq uuid_cur;
		3514
		3515	unless ($value) {
		3516	warn "cowardly refusing to write zero uuid value!\n";
		3517	return;
		3518	}
		3519
		3520	my $value = uuid_str $value + $uuid_skip;
		3521	$uuid_skip = 0;
		3522
		3523	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3524	and return;
		3525
		3526	# always fsync - this file is important
		3527	aio_fsync $fh
		3528	and return;
		3529
		3530	close $fh
		3531	or return;
		3532
		3533	aio_rename "$uuid~", $uuid
		3534	and return;
		3535
		3536	warn "uuid file written ($value).\n";
		3537
		3538	1
		3539
		3540	}
		3541
		3542	sub write_uuid($$) {
		3543	my ($skip, $sync) = @_;
		3544
		3545	$sync ? write_uuid_sync $skip
		3546	: async { write_uuid_sync $skip };
		3547	}
		3548
		3549	sub emergency_save() {
		3550	my $freeze_guard = cf::freeze_mainloop;
		3551
		3552	warn "emergency_perl_save: enter\n";
		3553
		3554	cf::sync_job {
		3555	# this is a trade-off: we want to be very quick here, so
		3556	# save all maps without fsync, and later call a global sync
		3557	# (which in turn might be very very slow)
		3558	local $USE_FSYNC = 0;
		3559
		3560	# use a peculiar iteration method to avoid tripping on perl
		3561	# refcount bugs in for. also avoids problems with players
		3562	# and maps saved/destroyed asynchronously.
		3563	warn "emergency_perl_save: begin player save\n";
		3564	for my $login (keys %cf::PLAYER) {
		3565	my $pl = $cf::PLAYER{$login} or next;
		3566	$pl->valid or next;
		3567	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3568	$pl->save;
		3569	}
		3570	warn "emergency_perl_save: end player save\n";
		3571
		3572	warn "emergency_perl_save: begin map save\n";
		3573	for my $path (keys %cf::MAP) {
		3574	my $map = $cf::MAP{$path} or next;
		3575	$map->valid or next;
		3576	$map->save;
		3577	}
		3578	warn "emergency_perl_save: end map save\n";
		3579
		3580	warn "emergency_perl_save: begin database checkpoint\n";
		3581	BDB::db_env_txn_checkpoint $DB_ENV;
		3582	warn "emergency_perl_save: end database checkpoint\n";
		3583
		3584	warn "emergency_perl_save: begin write uuid\n";
		3585	write_uuid_sync 1;
		3586	warn "emergency_perl_save: end write uuid\n";
		3587	};
		3588
		3589	warn "emergency_perl_save: starting sync()\n";
		3590	IO::AIO::aio_sync sub {
		3591	warn "emergency_perl_save: finished sync()\n";
		3592	};
		3593
		3594	warn "emergency_perl_save: leave\n";
		3595	}
		3596
		3597	sub post_cleanup {
		3598	my ($make_core) = @_;
		3599
		3600	warn Carp::longmess "post_cleanup backtrace"
		3601	if $make_core;
		3602
		3603	my $fh = pidfile;
		3604	unlink $PIDFILE if <$fh> == $$;
		3605	}
		3606
		3607	# a safer delete_package, copied from Symbol
		3608	sub clear_package($) {
		3609	my $pkg = shift;
		3610
		3611	# expand to full symbol table name if needed
		3612	unless ($pkg =~ /^main::.*::$/) {
		3613	$pkg = "main$pkg" if $pkg =~ /^::/;
		3614	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3615	$pkg .= '::' unless $pkg =~ /::$/;
		3616	}
		3617
		3618	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3619	my $stem_symtab = *{$stem}{HASH};
		3620
		3621	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3622	or return;
		3623
		3624	# clear all symbols
		3625	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3626	for my $name (keys %$leaf_symtab) {
		3627	_gv_clear *{"$pkg$name"};
		3628	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3629	}
		3630	warn "cleared package $pkg\n";#d#
		3631	}
		3632
		3633	sub do_reload_perl() {
		3634	# can/must only be called in main
		3635	if ($Coro::current != $Coro::main) {
		3636	warn "can only reload from main coroutine";
		3637	return;
		3638	}
		3639
		3640	return if $RELOAD++;
		3641
		3642	my $t1 = EV::time;
		3643
		3644	while ($RELOAD) {
		3645	warn "reloading...";
		3646
		3647	warn "entering sync_job";
		3648
		3649	cf::sync_job {
		3650	cf::write_runtime_sync; # external watchdog should not bark
		3651	cf::emergency_save;
		3652	cf::write_runtime_sync; # external watchdog should not bark
		3653
		3654	warn "syncing database to disk";
		3655	BDB::db_env_txn_checkpoint $DB_ENV;
		3656
		3657	# if anything goes wrong in here, we should simply crash as we already saved
		3658
		3659	warn "flushing outstanding aio requests";
		3660	while (IO::AIO::nreqs || BDB::nreqs) {
		3661	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3662	}
		3663
		3664	warn "cancelling all extension coros";
		3665	$_->cancel for values %EXT_CORO;
		3666	%EXT_CORO = ();
		3667
		3668	warn "removing commands";
		3669	%COMMAND = ();
		3670
		3671	warn "removing ext/exti commands";
		3672	%EXTCMD = ();
		3673	%EXTICMD = ();
		3674
		3675	warn "unloading/nuking all extensions";
		3676	for my $pkg (@EXTS) {
		3677	warn "... unloading $pkg";
		3678
		3679	if (my $cb = $pkg->can ("unload")) {
		3680	eval {
		3681	$cb->($pkg);
		3682	1
		3683	} or warn "$pkg unloaded, but with errors: $@";
		3684	}
		3685
		3686	warn "... clearing $pkg";
		3687	clear_package $pkg;
		3688	}
		3689
		3690	warn "unloading all perl modules loaded from $LIBDIR";
		3691	while (my ($k, $v) = each %INC) {
		3692	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3693
		3694	warn "... unloading $k";
		3695	delete $INC{$k};
		3696
		3697	$k =~ s/\.pm$//;
		3698	$k =~ s/\//::/g;
		3699
		3700	if (my $cb = $k->can ("unload_module")) {
		3701	$cb->();
		3702	}
		3703
		3704	clear_package $k;
		3705	}
		3706
		3707	warn "getting rid of safe::, as good as possible";
		3708	clear_package "safe::$_"
		3709	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3710
		3711	warn "unloading cf.pm \"a bit\"";
		3712	delete $INC{"cf.pm"};
		3713	delete $INC{"cf/pod.pm"};
		3714
		3715	# don't, removes xs symbols, too,
		3716	# and global variables created in xs
		3717	#clear_package __PACKAGE__;
		3718
		3719	warn "unload completed, starting to reload now";
		3720
		3721	warn "reloading cf.pm";
		3722	require cf;
		3723	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3724
		3725	warn "loading config and database again";
		3726	cf::reload_config;
		3727
		3728	warn "loading extensions";
		3729	cf::load_extensions;
		3730
		3731	if ($REATTACH_ON_RELOAD) {
		3732	warn "reattaching attachments to objects/players";
		3733	_global_reattach; # objects, sockets
		3734	warn "reattaching attachments to maps";
		3735	reattach $_ for values %MAP;
		3736	warn "reattaching attachments to players";
		3737	reattach $_ for values %PLAYER;
		3738	}
		3739
		3740	warn "running post_init jobs";
		3741	(pop @POST_INIT)->(1) while @POST_INIT;
		3742
		3743	warn "leaving sync_job";
		3744
		3745	1
		3746	} or do {
		3747	warn $@;
		3748	cf::cleanup "error while reloading, exiting.";
		3749	};
		3750
		3751	warn "reloaded";
		3752	--$RELOAD;
		3753	}
		3754
		3755	$t1 = EV::time - $t1;
		3756	warn "reload completed in ${t1}s\n";
		3757	};
		3758
		3759	our $RELOAD_WATCHER; # used only during reload
		3760
		3761	sub reload_perl() {
		3762	# doing reload synchronously and two reloads happen back-to-back,
		3763	# coro crashes during coro_state_free->destroy here.
		3764
		3765	$RELOAD_WATCHER ||= cf::async {
		3766	Coro::AIO::aio_wait cache_extensions;
		3767
		3768	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
		3769	do_reload_perl;
		3770	undef $RELOAD_WATCHER;
		3771	};
		3772	};
		3773	}
		3774
		3775	register_command "reload" => sub {
		3776	my ($who, $arg) = @_;
		3777
		3778	if ($who->flag (FLAG_WIZ)) {
		3779	$who->message ("reloading server.");
		3780	async {
		3781	$Coro::current->{desc} = "perl_reload";
		3782	reload_perl;
		3783	};
		3784	}
		3785	};
		3786
		3787	unshift @INC, $LIBDIR;
		3788
		3789	my $bug_warning = 0;
		3790
		3791	our @WAIT_FOR_TICK;
		3792	our @WAIT_FOR_TICK_BEGIN;
		3793
		3794	sub wait_for_tick {
		3795	return if tick_inhibit || $Coro::current == $Coro::main;
		3796
		3797	my $signal = new Coro::Signal;
		3798	push @WAIT_FOR_TICK, $signal;
		3799	$signal->wait;
		3800	}
		3801
		3802	sub wait_for_tick_begin {
		3803	return if tick_inhibit || $Coro::current == $Coro::main;
		3804
		3805	my $signal = new Coro::Signal;
		3806	push @WAIT_FOR_TICK_BEGIN, $signal;
		3807	$signal->wait;
		3808	}
		3809
		3810	sub tick {
		3811	if ($Coro::current != $Coro::main) {
		3812	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3813	unless ++$bug_warning > 10;
		3814	return;
		3815	}
		3816
		3817	cf::server_tick; # one server iteration
		3818
		3819	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3820	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		3821	Coro::async_pool {
		3822	$Coro::current->{desc} = "runtime saver";
		3823	write_runtime_sync
		3824	or warn "ERROR: unable to write runtime file: $!";
		3825	};
		3826	}
		3827
		3828	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3829	$sig->send;
		3830	}
		3831	while (my $sig = shift @WAIT_FOR_TICK) {
		3832	$sig->send;
		3833	}
		3834
		3835	$LOAD = ($NOW - $TICK_START) / $TICK;
		3836	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3837
		3838	if (0) {
		3839	if ($NEXT_TICK) {
		3840	my $jitter = $TICK_START - $NEXT_TICK;
		3841	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3842	warn "jitter $JITTER\n";#d#
		3843	}
		3844	}
		3845	}
1156		3846
1157	{	3847	{
1158	my $path = cf::localdir . "/database.pst";	3848	# configure BDB
1159		3849
1160	sub db_load() {	3850	BDB::min_parallel 8;
1161	warn "loading database $path\n";#d# remove later	3851	BDB::max_poll_reqs $TICK * 0.1;
1162	$DB = stat $path ? Storable::retrieve $path : { };	3852	$AnyEvent::BDB::WATCHER->priority (1);
1163	}
1164		3853
1165	my $pid;	3854	unless ($DB_ENV) {
		3855	$DB_ENV = BDB::db_env_create;
		3856	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3857	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3858	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3859	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3860	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1166		3861
1167	sub db_save() {	3862	cf::sync_job {
1168	warn "saving database $path\n";#d# remove later
1169	waitpid $pid, 0 if $pid;
1170	if (0 == ($pid = fork)) {
1171	$DB->{_meta}{version} = 1;
1172	Storable::nstore $DB, "$path~";
1173	rename "$path~", $path;
1174	cf::_exit 0 if defined $pid;
1175	}
1176	}
1177
1178	my $dirty;
1179
1180	sub db_sync() {
1181	db_save if $dirty;
1182	undef $dirty;
1183	}
1184
1185	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1186	db_sync;
1187	});
1188
1189	sub db_dirty() {
1190	$dirty = 1;
1191	$idle->start;
1192	}
1193
1194	sub db_get($;$) {
1195	@_ >= 2
1196	? $DB->{$_[0]}{$_[1]}
1197	: ($DB->{$_[0]} ||= { })
1198	}
1199
1200	sub db_put($$;$) {
1201	if (@_ >= 3) {
1202	$DB->{$_[0]}{$_[1]} = $_[2];
1203	} else {	3863	eval {
1204	$DB->{$_[0]} = $_[1];	3864	BDB::db_env_open
1205	}	3865	$DB_ENV,
1206	db_dirty;	3866	$BDBDIR,
1207	}	3867	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3868	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3869	0666;
1208		3870
1209	cf::global->attach (	3871	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1210	prio => 10000,
1211	on_cleanup => sub {
1212	db_sync;
1213	},
1214	);
1215	}
1216
1217	#############################################################################
1218	# the server's main()
1219
1220	sub cfg_load {
1221	open my $fh, "<:utf8", cf::confdir . "/config"
1222	or return;
1223
1224	local $/;
1225	*CFG = YAML::Syck::Load <$fh>;
1226	}
1227
1228	sub main {
1229	cfg_load;
1230	db_load;
1231	load_extensions;
1232	Event::loop;
1233	}
1234
1235	#############################################################################
1236	# initialisation
1237
1238	sub _perl_reload() {
1239	warn "reloading...";
1240
1241	eval {
1242	local $FREEZE = 1;
1243
1244	cf::emergency_save;
1245
1246	# cancel all watchers
1247	for (Event::all_watchers) {
1248	$_->cancel if $_->data & WF_AUTOCANCEL;
1249	}
1250
1251	# cancel all extension coros
1252	$_->cancel for values %EXT_CORO;
1253	%EXT_CORO = ();
1254
1255	# unload all extensions
1256	for (@exts) {
1257	warn "unloading <$_>";
1258	unload_extension $_;
1259	}
1260
1261	# unload all modules loaded from $LIBDIR
1262	while (my ($k, $v) = each %INC) {
1263	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1264
1265	warn "removing <$k>";
1266	delete $INC{$k};
1267
1268	$k =~ s/\.pm$//;
1269	$k =~ s/\//::/g;
1270
1271	if (my $cb = $k->can ("unload_module")) {
1272	$cb->();
1273	}	3872	};
1274		3873
1275	Symbol::delete_package $k;	3874	cf::cleanup "db_env_open(db): $@" if $@;
1276	}	3875	};
		3876	}
1277		3877
1278	# sync database to disk	3878	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1279	cf::db_sync;	3879	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1280	IO::AIO::flush;
1281
1282	# get rid of safe::, as good as possible
1283	Symbol::delete_package "safe::$_"
1284	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1285
1286	# remove register_script_function callbacks
1287	# TODO
1288
1289	# unload cf.pm "a bit"
1290	delete $INC{"cf.pm"};
1291
1292	# don't, removes xs symbols, too,
1293	# and global variables created in xs
1294	#Symbol::delete_package __PACKAGE__;
1295
1296	# reload cf.pm
1297	warn "reloading cf.pm";
1298	require cf;
1299	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1300
1301	# load config and database again
1302	cf::cfg_load;
1303	cf::db_load;
1304
1305	# load extensions
1306	warn "load extensions";
1307	cf::load_extensions;
1308
1309	# reattach attachments to objects
1310	warn "reattach";
1311	_global_reattach;
1312	};	3880	};
1313	warn $@ if $@;	3881	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1314		3882	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1315	warn "reloaded";
1316	};
1317
1318	sub perl_reload() {
1319	_perl_reload;
1320	}
1321
1322	register "<global>", __PACKAGE__;
1323
1324	register_command "perl-reload" => sub {
1325	my ($who, $arg) = @_;
1326
1327	if ($who->flag (FLAG_WIZ)) {
1328	$who->message ("reloading...");
1329	_perl_reload;
1330	}	3883	};
1331	};	3884	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3885	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3886	};
		3887	}
1332		3888
1333	unshift @INC, $LIBDIR;	3889	{
		3890	# configure IO::AIO
1334		3891
1335	$TICK_WATCHER = Event->timer (	3892	IO::AIO::min_parallel 8;
1336	reentrant => 0,	3893	IO::AIO::max_poll_time $TICK * 0.1;
1337	prio => 0,	3894	undef $AnyEvent::AIO::WATCHER;
1338	at => $NEXT_TICK || $TICK,	3895	}
1339	data => WF_AUTOCANCEL,	3896
1340	cb => sub {	3897	my $_log_backtrace;
1341	unless ($FREEZE) {	3898
1342	cf::server_tick; # one server iteration	3899	sub _log_backtrace {
1343	$RUNTIME += $TICK;	3900	my ($msg, @addr) = @_;
		3901
		3902	$msg =~ s/\n//;
		3903
		3904	# limit the # of concurrent backtraces
		3905	if ($_log_backtrace < 2) {
		3906	++$_log_backtrace;
		3907	my $perl_bt = Carp::longmess $msg;
		3908	async {
		3909	$Coro::current->{desc} = "abt $msg";
		3910
		3911	my @bt = fork_call {
		3912	@addr = map { sprintf "%x", $_ } @addr;
		3913	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3914	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3915	or die "addr2line: $!";
		3916
		3917	my @funcs;
		3918	my @res = <$fh>;
		3919	chomp for @res;
		3920	while (@res) {
		3921	my ($func, $line) = splice @res, 0, 2, ();
		3922	push @funcs, "[$func] $line";
		3923	}
		3924
		3925	@funcs
		3926	};
		3927
		3928	LOG llevInfo, "[ABT] $perl_bt\n";
		3929	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		3930	LOG llevInfo, "[ABT] $_\n" for @bt;
		3931	--$_log_backtrace;
1344	}	3932	};
1345		3933	} else {
1346	$NEXT_TICK += $TICK;	3934	LOG llevInfo, "[ABT] $msg\n";
1347		3935	LOG llevInfo, "[ABT] [suppressed]\n";
1348	# if we are delayed by four ticks or more, skip them all
1349	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1350
1351	$TICK_WATCHER->at ($NEXT_TICK);
1352	$TICK_WATCHER->start;
1353	},	3936	}
1354	);	3937	}
1355		3938
1356	IO::AIO::max_poll_time $TICK * 0.2;	3939	# load additional modules
		3940	use cf::pod;
1357		3941
1358	Event->io (fd => IO::AIO::poll_fileno,	3942	END { cf::emergency_save }
1359	poll => 'r',
1360	prio => 5,
1361	data => WF_AUTOCANCEL,
1362	cb => \&IO::AIO::poll_cb);
1363
1364	# we must not ever block the main coroutine
1365	$Coro::idle = sub {
1366	#Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
1367	warn "FATAL: Coro::idle was called, major BUG\n";
1368	(Coro::unblock_sub {
1369	Event::one_event;
1370	})->();
1371	};
1372		3943
1373	1	3944	1
1374		3945

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