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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.256 by root, Sat Apr 21 16:56:32 2007 UTC vs.
Revision 1.501 by root, Sat Jan 16 23:27:21 2010 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 it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
2		24
		25	use 5.10.0;
3	use utf8;	26	use utf8;
4	use strict;	27	use strict qw(vars subs);
5		28
6	use Symbol;	29	use Symbol;
7	use List::Util;	30	use List::Util;
8	use Socket;	31	use Socket;
9	use Storable;	32	use EV;
10	use Event;
11	use Opcode;	33	use Opcode;
12	use Safe;	34	use Safe;
13	use Safe::Hole;	35	use Safe::Hole;
		36	use Storable ();
		37	use Carp ();
14		38
		39	use Guard ();
15	use Coro 3.61 ();	40	use Coro ();
16	use Coro::State;	41	use Coro::State;
17	use Coro::Handle;	42	use Coro::Handle;
		43	use Coro::EV;
18	use Coro::Event;	44	use Coro::AnyEvent;
19	use Coro::Timer;	45	use Coro::Timer;
20	use Coro::Signal;	46	use Coro::Signal;
21	use Coro::Semaphore;	47	use Coro::Semaphore;
		48	use Coro::SemaphoreSet;
		49	use Coro::AnyEvent;
22	use Coro::AIO;	50	use Coro::AIO;
		51	use Coro::BDB 1.6;
23	use Coro::Storable;	52	use Coro::Storable;
		53	use Coro::Util ();
24		54
		55	use JSON::XS 2.01 ();
25	use BDB ();	56	use BDB ();
26	use Data::Dumper;	57	use Data::Dumper;
27	use Digest::MD5;
28	use Fcntl;	58	use Fcntl;
29	use YAML::Syck ();	59	use YAML::XS ();
30	use IO::AIO 2.32 ();	60	use IO::AIO ();
31	use Time::HiRes;	61	use Time::HiRes;
32	use Compress::LZF;	62	use Compress::LZF;
		63	use Digest::MD5 ();
		64
		65	AnyEvent::detect;
33		66
34	# configure various modules to our taste	67	# configure various modules to our taste
35	#	68	#
36	$Storable::canonical = 1; # reduce rsync transfers	69	$Storable::canonical = 1; # reduce rsync transfers
37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator	70	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		71
		72	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		73
		74	# make sure c-lzf reinitialises itself
		75	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later	76	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
39		77
40	$Event::Eval = 1; # no idea why this is required, but it is	78	# strictly for debugging
41		79	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
43	$YAML::Syck::ImplicitUnicode = 1;
44
45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
46		80
47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	81	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
48		82
49	our %COMMAND = ();	83	our %COMMAND = ();
50	our %COMMAND_TIME = ();	84	our %COMMAND_TIME = ();
51		85
52	our @EXTS = (); # list of extension package names	86	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	87	our %EXTCMD = ();
		88	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	89	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	90	our %EXT_MAP = (); # pluggable maps
56		91
57	our $RELOAD; # number of reloads so far	92	our $RELOAD; # number of reloads so far, non-zero while in reload
58	our @EVENT;	93	our @EVENT;
		94	our @REFLECT; # set by XS
		95	our %REFLECT; # set by us
59		96
60	our $CONFDIR = confdir;	97	our $CONFDIR = confdir;
61	our $DATADIR = datadir;	98	our $DATADIR = datadir;
62	our $LIBDIR = "$DATADIR/ext";	99	our $LIBDIR = "$DATADIR/ext";
63	our $PODDIR = "$DATADIR/pod";	100	our $PODDIR = "$DATADIR/pod";
64	our $MAPDIR = "$DATADIR/" . mapdir;	101	our $MAPDIR = "$DATADIR/" . mapdir;
65	our $LOCALDIR = localdir;	102	our $LOCALDIR = localdir;
66	our $TMPDIR = "$LOCALDIR/" . tmpdir;	103	our $TMPDIR = "$LOCALDIR/" . tmpdir;
67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;	104	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;	105	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
69	our $RANDOMDIR = "$LOCALDIR/random";	106	our $RANDOMDIR = "$LOCALDIR/random";
70	our $BDBDIR = "$LOCALDIR/db";	107	our $BDBDIR = "$LOCALDIR/db";
		108	our $PIDFILE = "$LOCALDIR/pid";
		109	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		110
		111	our %RESOURCE;
71		112
72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)	113	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
73	our $TICK_WATCHER;
74	our $AIO_POLL_WATCHER;
75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written	114	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
76	our $NEXT_TICK;	115	our $NEXT_TICK;
77	our $NOW;
78	our $USE_FSYNC = 1; # use fsync to write maps - default off	116	our $USE_FSYNC = 1; # use fsync to write maps - default on
79		117
		118	our $BDB_DEADLOCK_WATCHER;
		119	our $BDB_CHECKPOINT_WATCHER;
80	our $BDB_POLL_WATCHER;	120	our $BDB_TRICKLE_WATCHER;
81	our $DB_ENV;	121	our $DB_ENV;
		122
		123	our @EXTRA_MODULES = qw(pod match mapscript);
82		124
83	our %CFG;	125	our %CFG;
84		126
85	our $UPTIME; $UPTIME ||= time;	127	our $UPTIME; $UPTIME ||= time;
86	our $RUNTIME;	128	our $RUNTIME;
		129	our $NOW;
87		130
88	our %PLAYER; # all users	131	our (%PLAYER, %PLAYER_LOADING); # all users
89	our %MAP; # all maps	132	our (%MAP, %MAP_LOADING ); # all maps
90	our $LINK_MAP; # the special {link} map, which is always available	133	our $LINK_MAP; # the special {link} map, which is always available
91		134
92	# used to convert map paths into valid unix filenames by replacing / by ∕	135	# used to convert map paths into valid unix filenames by replacing / by ∕
93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	136	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
94		137
		138	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		139	our $LOADAVG; # same thing, but with alpha-smoothing
		140	our $JITTER; # average jitter
		141	our $TICK_START; # for load detecting purposes
		142
		143	our @POST_INIT;
		144
		145	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		146	our $REALLY_UNLOOP; # never set to true, please :)
		147
95	binmode STDOUT;	148	binmode STDOUT;
96	binmode STDERR;	149	binmode STDERR;
97		150
98	# read virtual server time, if available	151	# read virtual server time, if available
99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {	152	unless ($RUNTIME || !-e $RUNTIMEFILE) {
100	open my $fh, "<", "$LOCALDIR/runtime"	153	open my $fh, "<", $RUNTIMEFILE
101	or die "unable to read runtime file: $!";	154	or die "unable to read $RUNTIMEFILE file: $!";
102	$RUNTIME = <$fh> + 0.;	155	$RUNTIME = <$fh> + 0.;
103	}	156	}
		157
		158	eval "sub TICK() { $TICK } 1" or die;
104		159
105	mkdir $_	160	mkdir $_
106	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;	161	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
107		162
108	our $EMERGENCY_POSITION;	163	our $EMERGENCY_POSITION;
109		164
110	sub cf::map::normalise;	165	sub cf::map::normalise;
		166
		167	#############################################################################
		168
		169	%REFLECT = ();
		170	for (@REFLECT) {
		171	my $reflect = JSON::XS::decode_json $_;
		172	$REFLECT{$reflect->{class}} = $reflect;
		173	}
		174
		175	# this is decidedly evil
		176	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
111		177
112	#############################################################################	178	#############################################################################
113		179
114	=head2 GLOBAL VARIABLES	180	=head2 GLOBAL VARIABLES
115		181
…		…
139		205
140	=item $cf::TICK	206	=item $cf::TICK
141		207
142	The interval between server ticks, in seconds.	208	The interval between server ticks, in seconds.
143		209
		210	=item $cf::LOADAVG
		211
		212	The current CPU load on the server (alpha-smoothed), as a value between 0
		213	(none) and 1 (overloaded), indicating how much time is spent on processing
		214	objects per tick. Healthy values are < 0.5.
		215
		216	=item $cf::LOAD
		217
		218	The raw value load value from the last tick.
		219
144	=item %cf::CFG	220	=item %cf::CFG
145		221
146	Configuration for the server, loaded from C</etc/crossfire/config>, or	222	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
147	from wherever your confdir points to.	223	from wherever your confdir points to.
148		224
149	=item cf::wait_for_tick, cf::wait_for_tick_begin	225	=item cf::wait_for_tick, cf::wait_for_tick_begin
150		226
151	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only	227	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
152	returns directly I<after> the tick processing (and consequently, can only wake one process	228	returns directly I<after> the tick processing (and consequently, can only wake one process
153	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.	229	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
154		230
		231	=item @cf::INVOKE_RESULTS
		232
		233	This array contains the results of the last C<invoke ()> call. When
		234	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		235	that call.
		236
		237	=item %cf::REFLECT
		238
		239	Contains, for each (C++) class name, a hash reference with information
		240	about object members (methods, scalars, arrays and flags) and other
		241	metadata, which is useful for introspection.
		242
155	=back	243	=back
156		244
157	=cut	245	=cut
158		246
159	BEGIN {	247	$Coro::State::WARNHOOK = sub {
160	*CORE::GLOBAL::warn = sub {
161	my $msg = join "", @_;	248	my $msg = join "", @_;
162		249
163	$msg .= "\n"	250	$msg .= "\n"
164	unless $msg =~ /\n$/;	251	unless $msg =~ /\n$/;
165		252
166	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;	253	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
167		254
168	utf8::encode $msg;
169	LOG llevError, $msg;	255	LOG llevError, $msg;
170	};	256	};
171	}	257
		258	$Coro::State::DIEHOOK = sub {
		259	return unless $^S eq 0; # "eq", not "=="
		260
		261	warn Carp::longmess $_[0];
		262
		263	if ($Coro::current == $Coro::main) {#d#
		264	warn "DIEHOOK called in main context, Coro bug?\n";#d#
		265	return;#d#
		266	}#d#
		267
		268	# kill coroutine otherwise
		269	Coro::terminate
		270	};
172		271
173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	272	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	273	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	274	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	275	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
177	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	276	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		277	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	278	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
179		279
180	# we bless all objects into (empty) derived classes to force a method lookup	280	# we bless all objects into (empty) derived classes to force a method lookup
181	# within the Safe compartment.	281	# within the Safe compartment.
182	for my $pkg (qw(	282	for my $pkg (qw(
183	cf::global cf::attachable	283	cf::global cf::attachable
184	cf::object cf::object::player	284	cf::object cf::object::player
185	cf::client cf::player	285	cf::client cf::player
186	cf::arch cf::living	286	cf::arch cf::living
		287	cf::map cf::mapspace
187	cf::map cf::party cf::region	288	cf::party cf::region
188	)) {	289	)) {
189	no strict 'refs';
190	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	290	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
191	}	291	}
192		292
193	$Event::DIED = sub {	293	$EV::DIED = sub {
194	warn "error in event callback: @_";	294	Carp::cluck "error in event callback: @_";
195	};	295	};
		296
		297	#############################################################################
196		298
197	=head2 UTILITY FUNCTIONS	299	=head2 UTILITY FUNCTIONS
198		300
199	=over 4	301	=over 4
200		302
…		…
219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	321	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
220	$d	322	$d
221	} || "[unable to dump $_[0]: '$@']";	323	} || "[unable to dump $_[0]: '$@']";
222	}	324	}
223		325
224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
225
226	=item $ref = cf::from_json $json	326	=item $ref = cf::decode_json $json
227		327
228	Converts a JSON string into the corresponding perl data structure.	328	Converts a JSON string into the corresponding perl data structure.
229		329
230	=item $json = cf::to_json $ref	330	=item $json = cf::encode_json $ref
231		331
232	Converts a perl data structure into its JSON representation.	332	Converts a perl data structure into its JSON representation.
233		333
		334	=cut
		335
		336	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		337
		338	sub encode_json($) { $json_coder->encode ($_[0]) }
		339	sub decode_json($) { $json_coder->decode ($_[0]) }
		340
		341	=item cf::post_init { BLOCK }
		342
		343	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		344	but I<before> the server starts ticking again.
		345
		346	The cdoeblock will have a single boolean argument to indicate whether this
		347	is a reload or not.
		348
		349	=cut
		350
		351	sub post_init(&) {
		352	push @POST_INIT, shift;
		353	}
		354
234	=item cf::lock_wait $string	355	=item cf::lock_wait $string
235		356
236	Wait until the given lock is available. See cf::lock_acquire.	357	Wait until the given lock is available. See cf::lock_acquire.
237		358
238	=item my $lock = cf::lock_acquire $string	359	=item my $lock = cf::lock_acquire $string
239		360
240	Wait until the given lock is available and then acquires it and returns	361	Wait until the given lock is available and then acquires it and returns
241	a Coro::guard object. If the guard object gets destroyed (goes out of scope,	362	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
242	for example when the coroutine gets canceled), the lock is automatically	363	for example when the coroutine gets canceled), the lock is automatically
243	returned.	364	returned.
244		365
		366	Locks are *not* recursive, locking from the same coro twice results in a
		367	deadlocked coro.
		368
245	Lock names should begin with a unique identifier (for example, cf::map::find	369	Lock names should begin with a unique identifier (for example, cf::map::find
246	uses map_find and cf::map::load uses map_load).	370	uses map_find and cf::map::load uses map_load).
247		371
248	=item $locked = cf::lock_active $string	372	=item $locked = cf::lock_active $string
249		373
250	Return true if the lock is currently active, i.e. somebody has locked it.	374	Return true if the lock is currently active, i.e. somebody has locked it.
251		375
252	=cut	376	=cut
253		377
254	our %LOCK;	378	our $LOCKS = new Coro::SemaphoreSet;
255		379
256	sub lock_wait($) {	380	sub lock_wait($) {
257	my ($key) = @_;	381	$LOCKS->wait ($_[0]);
258
259	# wait for lock, if any
260	while ($LOCK{$key}) {
261	push @{ $LOCK{$key} }, $Coro::current;
262	Coro::schedule;
263	}
264	}	382	}
265		383
266	sub lock_acquire($) {	384	sub lock_acquire($) {
267	my ($key) = @_;	385	$LOCKS->guard ($_[0])
268
269	# wait, to be sure we are not locked
270	lock_wait $key;
271
272	$LOCK{$key} = [];
273
274	Coro::guard {
275	# wake up all waiters, to be on the safe side
276	$_->ready for @{ delete $LOCK{$key} };
277	}
278	}	386	}
279		387
280	sub lock_active($) {	388	sub lock_active($) {
281	my ($key) = @_;	389	$LOCKS->count ($_[0]) < 1
282
283	! ! $LOCK{$key}
284	}	390	}
285		391
286	sub freeze_mainloop {	392	sub freeze_mainloop {
287	return unless $TICK_WATCHER->is_active;	393	tick_inhibit_inc;
288		394
289	my $guard = Coro::guard {	395	&Guard::guard (\&tick_inhibit_dec);
290	$TICK_WATCHER->start;	396	}
		397
		398	=item cf::periodic $interval, $cb
		399
		400	Like EV::periodic, but randomly selects a starting point so that the actions
		401	get spread over timer.
		402
		403	=cut
		404
		405	sub periodic($$) {
		406	my ($interval, $cb) = @_;
		407
		408	my $start = rand List::Util::min 180, $interval;
		409
		410	EV::periodic $start, $interval, 0, $cb
		411	}
		412
		413	=item cf::get_slot $time[, $priority[, $name]]
		414
		415	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		416	This call blocks and returns only when you have at least C<$time> seconds
		417	of cpu time till the next tick. The slot is only valid till the next cede.
		418
		419	The optional C<$name> can be used to identify the job to run. It might be
		420	used for statistical purposes and should identify the same time-class.
		421
		422	Useful for short background jobs.
		423
		424	=cut
		425
		426	our @SLOT_QUEUE;
		427	our $SLOT_QUEUE;
		428
		429	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		430	$SLOT_QUEUE = Coro::async {
		431	$Coro::current->desc ("timeslot manager");
		432
		433	my $signal = new Coro::Signal;
		434
		435	while () {
		436	next_job:
		437	my $avail = cf::till_tick;
		438	if ($avail > 0.01) {
		439	for (0 .. $#SLOT_QUEUE) {
		440	if ($SLOT_QUEUE[$_][0] < $avail) {
		441	my $job = splice @SLOT_QUEUE, $_, 1, ();
		442	$job->[2]->send;
		443	Coro::cede;
		444	goto next_job;
		445	}
		446	}
		447	}
		448
		449	if (@SLOT_QUEUE) {
		450	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		451	push @cf::WAIT_FOR_TICK, $signal;
		452	$signal->wait;
		453	} else {
		454	Coro::schedule;
		455	}
291	};	456	}
292	$TICK_WATCHER->stop;	457	};
293	$guard	458
		459	sub get_slot($;$$) {
		460	return if tick_inhibit || $Coro::current == $Coro::main;
		461
		462	my ($time, $pri, $name) = @_;
		463
		464	$time = $TICK * .6 if $time > $TICK * .6;
		465	my $sig = new Coro::Signal;
		466
		467	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		468	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		469	$SLOT_QUEUE->ready;
		470	$sig->wait;
294	}	471	}
295		472
296	=item cf::async { BLOCK }	473	=item cf::async { BLOCK }
297		474
298	Currently the same as Coro::async_pool, meaning you cannot use	475	Currently the same as Coro::async_pool, meaning you cannot use
…		…
303		480
304	BEGIN { *async = \&Coro::async_pool }	481	BEGIN { *async = \&Coro::async_pool }
305		482
306	=item cf::sync_job { BLOCK }	483	=item cf::sync_job { BLOCK }
307		484
308	The design of crossfire+ requires that the main coro ($Coro::main) is	485	The design of Deliantra requires that the main coroutine ($Coro::main)
309	always able to handle events or runnable, as crossfire+ is only partly	486	is always able to handle events or runnable, as Deliantra is only
310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	487	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		488	acceptable.
311		489
312	If it must be done, put the blocking parts into C<sync_job>. This will run	490	If it must be done, put the blocking parts into C<sync_job>. This will run
313	the given BLOCK in another coroutine while waiting for the result. The	491	the given BLOCK in another coroutine while waiting for the result. The
314	server will be frozen during this time, so the block should either finish	492	server will be frozen during this time, so the block should either finish
315	fast or be very important.	493	fast or be very important.
…		…
318		496
319	sub sync_job(&) {	497	sub sync_job(&) {
320	my ($job) = @_;	498	my ($job) = @_;
321		499
322	if ($Coro::current == $Coro::main) {	500	if ($Coro::current == $Coro::main) {
		501	my $time = EV::time;
		502
323	# this is the main coro, too bad, we have to block	503	# this is the main coro, too bad, we have to block
324	# till the operation succeeds, freezing the server :/	504	# till the operation succeeds, freezing the server :/
325		505
326	# TODO: use suspend/resume instead	506	LOG llevError, Carp::longmess "sync job";#d#
327	# (but this is cancel-safe)	507
328	my $freeze_guard = freeze_mainloop;	508	my $freeze_guard = freeze_mainloop;
329		509
330	my $busy = 1;	510	my $busy = 1;
331	my @res;	511	my @res;
332		512
333	(async {	513	(async {
		514	$Coro::current->desc ("sync job coro");
334	@res = eval { $job->() };	515	@res = eval { $job->() };
335	warn $@ if $@;	516	warn $@ if $@;
336	undef $busy;	517	undef $busy;
337	})->prio (Coro::PRIO_MAX);	518	})->prio (Coro::PRIO_MAX);
338		519
339	while ($busy) {	520	while ($busy) {
340	Coro::cede or Event::one_event;	521	if (Coro::nready) {
		522	Coro::cede_notself;
		523	} else {
		524	EV::loop EV::LOOP_ONESHOT;
341	}	525	}
		526	}
		527
		528	my $time = EV::time - $time;
		529
		530	$TICK_START += $time; # do not account sync jobs to server load
342		531
343	wantarray ? @res : $res[0]	532	wantarray ? @res : $res[0]
344	} else {	533	} else {
345	# we are in another coroutine, how wonderful, everything just works	534	# we are in another coroutine, how wonderful, everything just works
346		535
…		…
366	$EXT_CORO{$coro+0} = $coro;	555	$EXT_CORO{$coro+0} = $coro;
367		556
368	$coro	557	$coro
369	}	558	}
370		559
371	sub write_runtime {	560	=item fork_call { }, $args
372	my $guard = cf::lock_acquire "write_runtime";
373		561
374	my $runtime = "$LOCALDIR/runtime";	562	Executes the given code block with the given arguments in a seperate
		563	process, returning the results. Everything must be serialisable with
		564	Coro::Storable. May, of course, block. Note that the executed sub may
		565	never block itself or use any form of event handling.
375		566
376	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	567	=cut
377	or return;
378		568
379	my $value = $cf::RUNTIME + 90 + 10;	569	sub fork_call(&@) {
380	# 10 is the runtime save interval, for a monotonic clock	570	my ($cb, @args) = @_;
381	# 60 allows for the watchdog to kill the server.
382		571
383	(aio_write $fh, 0, (length $value), $value, 0) <= 0	572	# we seemingly have to make a local copy of the whole thing,
384	and return;	573	# otherwise perl prematurely frees the stuff :/
		574	# TODO: investigate and fix (likely this will be rather laborious)
385		575
386	# always fsync - this file is important	576	my @res = Coro::Util::fork_eval {
387	aio_fsync $fh	577	reset_signals;
388	and return;	578	&$cb
		579	}, @args;
389		580
390	close $fh	581	wantarray ? @res : $res[-1]
391	or return;	582	}
392		583
393	aio_rename "$runtime~", $runtime	584	=item $coin = coin_from_name $name
394	and return;
395		585
		586	=cut
		587
		588	our %coin_alias = (
		589	"silver" => "silvercoin",
		590	"silvercoin" => "silvercoin",
		591	"silvercoins" => "silvercoin",
		592	"gold" => "goldcoin",
		593	"goldcoin" => "goldcoin",
		594	"goldcoins" => "goldcoin",
		595	"platinum" => "platinacoin",
		596	"platinumcoin" => "platinacoin",
		597	"platinumcoins" => "platinacoin",
		598	"platina" => "platinacoin",
		599	"platinacoin" => "platinacoin",
		600	"platinacoins" => "platinacoin",
		601	"royalty" => "royalty",
		602	"royalties" => "royalty",
		603	);
		604
		605	sub coin_from_name($) {
		606	$coin_alias{$_[0]}
		607	? cf::arch::find $coin_alias{$_[0]}
		608	: undef
		609	}
		610
		611	=item $value = cf::db_get $family => $key
		612
		613	Returns a single value from the environment database.
		614
		615	=item cf::db_put $family => $key => $value
		616
		617	Stores the given C<$value> in the family. It can currently store binary
		618	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		619
		620	=item $db = cf::db_table "name"
		621
		622	Create and/or open a new database table. The string must not be "db" and must be unique
		623	within each server.
		624
		625	=cut
		626
		627	sub db_table($) {
		628	my ($name) = @_;
		629	my $db = BDB::db_create $DB_ENV;
		630
		631	eval {
		632	$db->set_flags (BDB::CHKSUM);
		633
		634	utf8::encode $name;
		635	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		636	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		637	cf::cleanup "db_open(db): $!" if $!;
		638	};
		639	cf::cleanup "db_open(db): $@" if $@;
		640
		641	$db
		642	}
		643
		644	our $DB;
		645
		646	sub db_init {
		647	cf::sync_job {
		648	$DB ||= db_table "db";
		649	};
		650	}
		651
		652	sub db_get($$) {
		653	my $key = "$_[0]/$_[1]";
		654
		655	cf::sync_job {
		656	BDB::db_get $DB, undef, $key, my $data;
		657
		658	$! ? ()
		659	: $data
396	1	660	}
		661	}
		662
		663	sub db_put($$$) {
		664	BDB::dbreq_pri 4;
		665	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		666	}
		667
		668	=item cf::cache $id => [$paths...], $processversion => $process
		669
		670	Generic caching function that returns the value of the resource $id,
		671	caching and regenerating as required.
		672
		673	This function can block.
		674
		675	=cut
		676
		677	sub cache {
		678	my ($id, $src, $processversion, $process) = @_;
		679
		680	my $meta =
		681	join "\x00",
		682	$processversion,
		683	map {
		684	aio_stat $_
		685	and Carp::croak "$_: $!";
		686
		687	($_, (stat _)[7,9])
		688	} @$src;
		689
		690	my $dbmeta = db_get cache => "$id/meta";
		691	if ($dbmeta ne $meta) {
		692	# changed, we may need to process
		693
		694	my @data;
		695	my $md5;
		696
		697	for (0 .. $#$src) {
		698	0 <= aio_load $src->[$_], $data[$_]
		699	or Carp::croak "$src->[$_]: $!";
		700	}
		701
		702	# if processing is expensive, check
		703	# checksum first
		704	if (1) {
		705	$md5 =
		706	join "\x00",
		707	$processversion,
		708	map {
		709	cf::cede_to_tick;
		710	($src->[$_], Digest::MD5::md5_hex $data[$_])
		711	} 0.. $#$src;
		712
		713
		714	my $dbmd5 = db_get cache => "$id/md5";
		715	if ($dbmd5 eq $md5) {
		716	db_put cache => "$id/meta", $meta;
		717
		718	return db_get cache => "$id/data";
		719	}
		720	}
		721
		722	my $t1 = Time::HiRes::time;
		723	my $data = $process->(\@data);
		724	my $t2 = Time::HiRes::time;
		725
		726	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		727
		728	db_put cache => "$id/data", $data;
		729	db_put cache => "$id/md5" , $md5;
		730	db_put cache => "$id/meta", $meta;
		731
		732	return $data;
		733	}
		734
		735	db_get cache => "$id/data"
397	}	736	}
398		737
399	=item cf::datalog type => key => value, ...	738	=item cf::datalog type => key => value, ...
400		739
401	Log a datalog packet of the given type with the given key-value pairs.	740	Log a datalog packet of the given type with the given key-value pairs.
…		…
413		752
414	#############################################################################	753	#############################################################################
415		754
416	=head2 ATTACHABLE OBJECTS	755	=head2 ATTACHABLE OBJECTS
417		756
418	Many objects in crossfire are so-called attachable objects. That means you can	757	Many objects in deliantra are so-called attachable objects. That means you can
419	attach callbacks/event handlers (a collection of which is called an "attachment")	758	attach callbacks/event handlers (a collection of which is called an "attachment")
420	to it. All such attachable objects support the following methods.	759	to it. All such attachable objects support the following methods.
421		760
422	In the following description, CLASS can be any of C<global>, C<object>	761	In the following description, CLASS can be any of C<global>, C<object>
423	C<player>, C<client> or C<map> (i.e. the attachable objects in	762	C<player>, C<client> or C<map> (i.e. the attachable objects in
424	crossfire+).	763	Deliantra).
425		764
426	=over 4	765	=over 4
427		766
428	=item $attachable->attach ($attachment, key => $value...)	767	=item $attachable->attach ($attachment, key => $value...)
429		768
…		…
473	=item cf::CLASS::attachment $name, ...	812	=item cf::CLASS::attachment $name, ...
474		813
475	Register an attachment by C<$name> through which attachable objects of the	814	Register an attachment by C<$name> through which attachable objects of the
476	given CLASS can refer to this attachment.	815	given CLASS can refer to this attachment.
477		816
478	Some classes such as crossfire maps and objects can specify attachments	817	Some classes such as deliantra maps and objects can specify attachments
479	that are attached at load/instantiate time, thus the need for a name.	818	that are attached at load/instantiate time, thus the need for a name.
480		819
481	These calls expect any number of the following handler/hook descriptions:	820	These calls expect any number of the following handler/hook descriptions:
482		821
483	=over 4	822	=over 4
…		…
592	$registry = $CB_TYPE[$object_type] ||= [];	931	$registry = $CB_TYPE[$object_type] ||= [];
593		932
594	} elsif ($type eq "subtype") {	933	} elsif ($type eq "subtype") {
595	defined $object_type or Carp::croak "subtype specified without type";	934	defined $object_type or Carp::croak "subtype specified without type";
596	my $object_subtype = shift @arg;	935	my $object_subtype = shift @arg;
597	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	936	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
598		937
599	} elsif ($type eq "package") {	938	} elsif ($type eq "package") {
600	my $pkg = shift @arg;	939	my $pkg = shift @arg;
601		940
602	while (my ($name, $id) = each %cb_id) {	941	while (my ($name, $id) = each %cb_id) {
…		…
631	_attach $registry, $klass, @attach;	970	_attach $registry, $klass, @attach;
632	}	971	}
633		972
634	$obj->{$name} = \%arg;	973	$obj->{$name} = \%arg;
635	} else {	974	} else {
636	warn "object uses attachment '$name' that is not available, postponing.\n";	975	warn "object uses attachment '$name' which is not available, postponing.\n";
637	}	976	}
638		977
639	$obj->{_attachment}{$name} = undef;	978	$obj->{_attachment}{$name} = undef;
640	}	979	}
641		980
…		…
643	if (ref $_[0]) {	982	if (ref $_[0]) {
644	_object_attach @_;	983	_object_attach @_;
645	} else {	984	} else {
646	_attach shift->_attach_registry, @_;	985	_attach shift->_attach_registry, @_;
647	}	986	}
		987	_recalc_want;
648	};	988	};
649		989
650	# all those should be optimised	990	# all those should be optimised
651	sub cf::attachable::detach {	991	sub cf::attachable::detach {
652	my ($obj, $name) = @_;	992	my ($obj, $name) = @_;
…		…
655	delete $obj->{_attachment}{$name};	995	delete $obj->{_attachment}{$name};
656	reattach ($obj);	996	reattach ($obj);
657	} else {	997	} else {
658	Carp::croak "cannot, currently, detach class attachments";	998	Carp::croak "cannot, currently, detach class attachments";
659	}	999	}
		1000	_recalc_want;
660	};	1001	};
661		1002
662	sub cf::attachable::attached {	1003	sub cf::attachable::attached {
663	my ($obj, $name) = @_;	1004	my ($obj, $name) = @_;
664		1005
…		…
679	";	1020	";
680	die if $@;	1021	die if $@;
681	}	1022	}
682		1023
683	our $override;	1024	our $override;
684	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1025	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
685		1026
686	sub override {	1027	sub override {
687	$override = 1;	1028	$override = 1;
688	@invoke_results = ();	1029	@INVOKE_RESULTS = (@_);
689	}	1030	}
690		1031
691	sub do_invoke {	1032	sub do_invoke {
692	my $event = shift;	1033	my $event = shift;
693	my $callbacks = shift;	1034	my $callbacks = shift;
694		1035
695	@invoke_results = ();	1036	@INVOKE_RESULTS = ();
696		1037
697	local $override;	1038	local $override;
698		1039
699	for (@$callbacks) {	1040	for (@$callbacks) {
700	eval { &{$_->[1]} };	1041	eval { &{$_->[1]} };
…		…
709	}	1050	}
710		1051
711	0	1052	0
712	}	1053	}
713		1054
714	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)	1055	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
715		1056
716	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)	1057	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
717		1058
718	Generate an object-specific event with the given arguments.	1059	Generate an object-specific event with the given arguments.
719		1060
720	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	1061	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
721	removed in future versions), and there is no public API to access override	1062	removed in future versions), and there is no public API to access override
722	results (if you must, access C<@cf::invoke_results> directly).	1063	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
723		1064
724	=back	1065	=back
725		1066
726	=cut	1067	=cut
727		1068
728	#############################################################################	1069	#############################################################################
729	# object support	1070	# object support
		1071
		1072	sub _object_equal($$);
		1073	sub _object_equal($$) {
		1074	my ($a, $b) = @_;
		1075
		1076	return 0 unless (ref $a) eq (ref $b);
		1077
		1078	if ("HASH" eq ref $a) {
		1079	my @ka = keys %$a;
		1080	my @kb = keys %$b;
		1081
		1082	return 0 if @ka != @kb;
		1083
		1084	for (0 .. $#ka) {
		1085	return 0 unless $ka[$_] eq $kb[$_];
		1086	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1087	}
		1088
		1089	} elsif ("ARRAY" eq ref $a) {
		1090
		1091	return 0 if @$a != @$b;
		1092
		1093	for (0 .. $#$a) {
		1094	return 0 unless _object_equal $a->[$_], $b->[$_];
		1095	}
		1096
		1097	} elsif ($a ne $b) {
		1098	return 0;
		1099	}
		1100
		1101	1
		1102	}
		1103
		1104	our $SLOW_MERGES;#d#
		1105	sub _can_merge {
		1106	my ($ob1, $ob2) = @_;
		1107
		1108	++$SLOW_MERGES;#d#
		1109
		1110	# we do the slow way here
		1111	return _object_equal $ob1, $ob2
		1112	}
730		1113
731	sub reattach {	1114	sub reattach {
732	# basically do the same as instantiate, without calling instantiate	1115	# basically do the same as instantiate, without calling instantiate
733	my ($obj) = @_;	1116	my ($obj) = @_;
734		1117
		1118	# no longer needed after getting rid of delete_package?
735	bless $obj, ref $obj; # re-bless in case extensions have been reloaded	1119	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
736		1120
737	my $registry = $obj->registry;	1121	my $registry = $obj->registry;
738		1122
739	@$registry = ();	1123	@$registry = ();
740		1124
…		…
755	cf::attachable->attach (	1139	cf::attachable->attach (
756	prio => -1000000,	1140	prio => -1000000,
757	on_instantiate => sub {	1141	on_instantiate => sub {
758	my ($obj, $data) = @_;	1142	my ($obj, $data) = @_;
759		1143
760	$data = from_json $data;	1144	$data = decode_json $data;
761		1145
762	for (@$data) {	1146	for (@$data) {
763	my ($name, $args) = @$_;	1147	my ($name, $args) = @$_;
764		1148
765	$obj->attach ($name, %{$args || {} });	1149	$obj->attach ($name, %{$args || {} });
…		…
781	sub object_freezer_save {	1165	sub object_freezer_save {
782	my ($filename, $rdata, $objs) = @_;	1166	my ($filename, $rdata, $objs) = @_;
783		1167
784	sync_job {	1168	sync_job {
785	if (length $$rdata) {	1169	if (length $$rdata) {
		1170	utf8::decode (my $decname = $filename);
786	warn sprintf "saving %s (%d,%d)\n",	1171	warn sprintf "saving %s (%d,%d)\n",
787	$filename, length $$rdata, scalar @$objs;	1172	$decname, length $$rdata, scalar @$objs;
788		1173
789	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	1174	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
790	chmod SAVE_MODE, $fh;	1175	aio_chmod $fh, SAVE_MODE;
791	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	1176	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
792	aio_fsync $fh if $cf::USE_FSYNC;	1177	if ($cf::USE_FSYNC) {
		1178	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1179	aio_fsync $fh;
		1180	}
793	close $fh;	1181	aio_close $fh;
794		1182
795	if (@$objs) {	1183	if (@$objs) {
796	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	1184	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
797	chmod SAVE_MODE, $fh;	1185	aio_chmod $fh, SAVE_MODE;
798	my $data = Storable::nfreeze { version => 1, objs => $objs };	1186	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
799	aio_write $fh, 0, (length $data), $data, 0;	1187	aio_write $fh, 0, (length $data), $data, 0;
800	aio_fsync $fh if $cf::USE_FSYNC;	1188	if ($cf::USE_FSYNC) {
		1189	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1190	aio_fsync $fh;
		1191	}
801	close $fh;	1192	aio_close $fh;
802	aio_rename "$filename.pst~", "$filename.pst";	1193	aio_rename "$filename.pst~", "$filename.pst";
803	}	1194	}
804	} else {	1195	} else {
805	aio_unlink "$filename.pst";	1196	aio_unlink "$filename.pst";
806	}	1197	}
807		1198
808	aio_rename "$filename~", $filename;	1199	aio_rename "$filename~", $filename;
		1200
		1201	$filename =~ s%/[^/]+$%%;
		1202	aio_pathsync $filename if $cf::USE_FSYNC;
809	} else {	1203	} else {
810	warn "FATAL: $filename~: $!\n";	1204	warn "unable to save objects: $filename~: $!\n";
811	}	1205	}
812	} else {	1206	} else {
813	aio_unlink $filename;	1207	aio_unlink $filename;
814	aio_unlink "$filename.pst";	1208	aio_unlink "$filename.pst";
815	}	1209	}
816	}	1210	};
817	}	1211	}
818		1212
819	sub object_freezer_as_string {	1213	sub object_freezer_as_string {
820	my ($rdata, $objs) = @_;	1214	my ($rdata, $objs) = @_;
821		1215
…		…
833	or return;	1227	or return;
834		1228
835	unless (aio_stat "$filename.pst") {	1229	unless (aio_stat "$filename.pst") {
836	(aio_load "$filename.pst", $av) >= 0	1230	(aio_load "$filename.pst", $av) >= 0
837	or return;	1231	or return;
		1232
838	$av = eval { (Storable::thaw $av)->{objs} };	1233	my $st = eval { Coro::Storable::thaw $av };
		1234	$av = $st->{objs};
839	}	1235	}
840		1236
		1237	utf8::decode (my $decname = $filename);
841	warn sprintf "loading %s (%d)\n",	1238	warn sprintf "loading %s (%d,%d)\n",
842	$filename, length $data, scalar @{$av || []};#d#	1239	$decname, length $data, scalar @{$av || []};
		1240
843	return ($data, $av);	1241	($data, $av)
844	}	1242	}
		1243
		1244	=head2 COMMAND CALLBACKS
		1245
		1246	=over 4
		1247
		1248	=cut
845		1249
846	#############################################################################	1250	#############################################################################
847	# command handling &c	1251	# command handling &c
848		1252
849	=item cf::register_command $name => \&callback($ob,$args);	1253	=item cf::register_command $name => \&callback($ob,$args);
…		…
862	push @{ $COMMAND{$name} }, [$caller, $cb];	1266	push @{ $COMMAND{$name} }, [$caller, $cb];
863	}	1267	}
864		1268
865	=item cf::register_extcmd $name => \&callback($pl,$packet);	1269	=item cf::register_extcmd $name => \&callback($pl,$packet);
866		1270
867	Register a callbackf ro execution when the client sends an extcmd packet.	1271	Register a callback for execution when the client sends an (synchronous)
		1272	extcmd packet. Ext commands will be processed in the order they are
		1273	received by the server, like other user commands. The first argument is
		1274	the logged-in player. Ext commands can only be processed after a player
		1275	has logged in successfully.
868		1276
869	If the callback returns something, it is sent back as if reply was being	1277	If the callback returns something, it is sent back as if reply was being
870	called.	1278	called.
871		1279
		1280	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1281
		1282	Register a callback for execution when the client sends an (asynchronous)
		1283	exticmd packet. Exti commands are processed by the server as soon as they
		1284	are received, i.e. out of order w.r.t. other commands. The first argument
		1285	is a client socket. Exti commands can be received anytime, even before
		1286	log-in.
		1287
		1288	If the callback returns something, it is sent back as if reply was being
		1289	called.
		1290
872	=cut	1291	=cut
873		1292
874	sub register_extcmd {	1293	sub register_extcmd {
875	my ($name, $cb) = @_;	1294	my ($name, $cb) = @_;
876		1295
877	$EXTCMD{$name} = $cb;	1296	$EXTCMD{$name} = $cb;
878	}	1297	}
		1298
		1299	sub register_exticmd {
		1300	my ($name, $cb) = @_;
		1301
		1302	$EXTICMD{$name} = $cb;
		1303	}
		1304
		1305	use File::Glob ();
879		1306
880	cf::player->attach (	1307	cf::player->attach (
881	on_command => sub {	1308	on_command => sub {
882	my ($pl, $name, $params) = @_;	1309	my ($pl, $name, $params) = @_;
883		1310
…		…
891	cf::override;	1318	cf::override;
892	},	1319	},
893	on_extcmd => sub {	1320	on_extcmd => sub {
894	my ($pl, $buf) = @_;	1321	my ($pl, $buf) = @_;
895		1322
896	my $msg = eval { from_json $buf };	1323	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
897		1324
898	if (ref $msg) {	1325	if (ref $msg) {
		1326	my ($type, $reply, @payload) =
		1327	"ARRAY" eq ref $msg
		1328	? @$msg
		1329	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1330
		1331	my @reply;
		1332
899	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1333	if (my $cb = $EXTCMD{$type}) {
900	if (my %reply = $cb->($pl, $msg)) {	1334	@reply = $cb->($pl, @payload);
901	$pl->ext_reply ($msg->{msgid}, %reply);
902	}
903	}	1335	}
		1336
		1337	$pl->ext_reply ($reply, @reply)
		1338	if $reply;
		1339
904	} else {	1340	} else {
905	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1341	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
906	}	1342	}
907		1343
908	cf::override;	1344	cf::override;
909	},	1345	},
910	);	1346	);
911		1347
		1348	# "readahead" all extensions
912	sub load_extension {	1349	sub cache_extensions {
913	my ($path) = @_;	1350	my $grp = IO::AIO::aio_group;
914		1351
915	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1352	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
916	my $base = $1;	1353	for (grep /\.ext$/, @{$_[0]}) {
917	my $pkg = $1;	1354	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
918	$pkg =~ s/[^[:word:]]/_/g;
919	$pkg = "ext::$pkg";
920
921	warn "... loading '$path' into '$pkg'\n";
922
923	open my $fh, "<:utf8", $path
924	or die "$path: $!";
925
926	my $source =
927	"package $pkg; use strict; use utf8;\n"
928	. "#line 1 \"$path\"\n{\n"
929	. (do { local $/; <$fh> })
930	. "\n};\n1";
931
932	unless (eval $source) {
933	my $msg = $@ ? "$path: $@\n"
934	: "extension disabled.\n";
935	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
936	warn $@;
937	warn "mandatory extension failed to load, exiting.\n";
938	exit 1;
939	}	1355	}
940	die $@;
941	}	1356	};
942		1357
943	push @EXTS, $pkg;	1358	$grp
944	}	1359	}
945		1360
946	sub load_extensions {	1361	sub load_extensions {
		1362	cf::sync_job {
		1363	my %todo;
		1364
947	for my $ext (<$LIBDIR/*.ext>) {	1365	for my $path (<$LIBDIR/*.ext>) {
948	next unless -r $ext;	1366	next unless -r $path;
949	eval {	1367
950	load_extension $ext;	1368	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1369	my $base = $1;
		1370	my $pkg = $1;
		1371	$pkg =~ s/[^[:word:]]/_/g;
		1372	$pkg = "ext::$pkg";
		1373
		1374	open my $fh, "<:utf8", $path
		1375	or die "$path: $!";
		1376
		1377	my $source = do { local $/; <$fh> };
		1378
		1379	my %ext = (
		1380	path => $path,
		1381	base => $base,
		1382	pkg => $pkg,
		1383	);
		1384
		1385	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1386	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1387
		1388	$ext{source} =
		1389	"package $pkg; use 5.10.0; use strict 'vars', 'subs'; use utf8;\n"
		1390	. "#line 1 \"$path\"\n{\n"
		1391	. $source
		1392	. "\n};\n1";
		1393
		1394	$todo{$base} = \%ext;
		1395	}
		1396
		1397	my %done;
		1398	while (%todo) {
		1399	my $progress;
		1400
		1401	while (my ($k, $v) = each %todo) {
		1402	for (split /,\s*/, $v->{meta}{depends}) {
		1403	goto skip
		1404	unless exists $done{$_};
		1405	}
		1406
		1407	warn "... loading '$k' into '$v->{pkg}'\n";
		1408
		1409	unless (eval $v->{source}) {
		1410	my $msg = $@ ? "$v->{path}: $@\n"
		1411	: "$v->{base}: extension inactive.\n";
		1412
		1413	if (exists $v->{meta}{mandatory}) {
		1414	warn $msg;
		1415	cf::cleanup "mandatory extension failed to load, exiting.";
		1416	}
		1417
		1418	warn $msg;
		1419	}
		1420
		1421	$done{$k} = delete $todo{$k};
		1422	push @EXTS, $v->{pkg};
		1423	$progress = 1;
951	1	1424	}
952	} or warn "$ext not loaded: $@";	1425
		1426	skip:
		1427	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1428	unless $progress;
		1429	}
953	}	1430	};
954	}	1431	}
955		1432
956	#############################################################################	1433	#############################################################################
957		1434
		1435	=back
		1436
958	=head2 CORE EXTENSIONS	1437	=head2 CORE EXTENSIONS
959		1438
960	Functions and methods that extend core crossfire objects.	1439	Functions and methods that extend core deliantra objects.
961		1440
962	=cut	1441	=cut
963		1442
964	package cf::player;	1443	package cf::player;
965		1444
966	use Coro::AIO;	1445	use Coro::AIO;
967		1446
968	=head3 cf::player	1447	=head3 cf::player
969		1448
970	=over 4	1449	=over 4
		1450
		1451	=item cf::player::num_playing
		1452
		1453	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1454
		1455	=cut
		1456
		1457	sub num_playing {
		1458	scalar grep
		1459	$_->ob->map
		1460	&& !$_->hidden
		1461	&& !$_->ob->flag (cf::FLAG_WIZ),
		1462	cf::player::list
		1463	}
971		1464
972	=item cf::player::find $login	1465	=item cf::player::find $login
973		1466
974	Returns the given player object, loading it if necessary (might block).	1467	Returns the given player object, loading it if necessary (might block).
975		1468
…		…
994		1487
995	sub exists($) {	1488	sub exists($) {
996	my ($login) = @_;	1489	my ($login) = @_;
997		1490
998	$cf::PLAYER{$login}	1491	$cf::PLAYER{$login}
999	or cf::sync_job { !aio_stat path $login }	1492	or !aio_stat path $login
1000	}	1493	}
1001		1494
1002	sub find($) {	1495	sub find($) {
1003	return $cf::PLAYER{$_[0]} || do {	1496	return $cf::PLAYER{$_[0]} || do {
1004	my $login = $_[0];	1497	my $login = $_[0];
…		…
1011	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";	1504	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
1012	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";	1505	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
1013	aio_unlink +(playerdir $login) . "/$login.pl.pst";	1506	aio_unlink +(playerdir $login) . "/$login.pl.pst";
1014	aio_unlink +(playerdir $login) . "/$login.pl";	1507	aio_unlink +(playerdir $login) . "/$login.pl";
1015		1508
1016	my $pl = load_pl path $login	1509	my $f = new_from_file cf::object::thawer path $login
1017	or return;	1510	or return;
		1511
		1512	my $pl = cf::player::load_pl $f
		1513	or return;
		1514
		1515	local $cf::PLAYER_LOADING{$login} = $pl;
		1516	$f->resolve_delayed_derefs;
1018	$cf::PLAYER{$login} = $pl	1517	$cf::PLAYER{$login} = $pl
1019	}	1518	}
1020	}	1519	}
1021	}	1520	}
1022		1521
…		…
1031	return if $pl->{deny_save};	1530	return if $pl->{deny_save};
1032		1531
1033	aio_mkdir playerdir $pl, 0770;	1532	aio_mkdir playerdir $pl, 0770;
1034	$pl->{last_save} = $cf::RUNTIME;	1533	$pl->{last_save} = $cf::RUNTIME;
1035		1534
		1535	cf::get_slot 0.01;
		1536
1036	$pl->save_pl ($path);	1537	$pl->save_pl ($path);
1037	Coro::cede;	1538	cf::cede_to_tick;
1038	}	1539	}
1039		1540
1040	sub new($) {	1541	sub new($) {
1041	my ($login) = @_;	1542	my ($login) = @_;
1042		1543
…		…
1048	$cf::PLAYER{$login} = $self;	1549	$cf::PLAYER{$login} = $self;
1049		1550
1050	$self	1551	$self
1051	}	1552	}
1052		1553
		1554	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1555
		1556	=cut
		1557
		1558	sub send_msg {
		1559	my $ns = shift->ns
		1560	or return;
		1561	$ns->send_msg (@_);
		1562	}
		1563
1053	=item $pl->quit_character	1564	=item $pl->quit_character
1054		1565
1055	Nukes the player without looking back. If logged in, the connection will	1566	Nukes the player without looking back. If logged in, the connection will
1056	be destroyed. May block for a long time.	1567	be destroyed. May block for a long time.
1057		1568
…		…
1061	my ($pl) = @_;	1572	my ($pl) = @_;
1062		1573
1063	my $name = $pl->ob->name;	1574	my $name = $pl->ob->name;
1064		1575
1065	$pl->{deny_save} = 1;	1576	$pl->{deny_save} = 1;
1066	$pl->password ("*"); # this should lock out the player until we nuked the dir	1577	$pl->password ("*"); # this should lock out the player until we have nuked the dir
1067		1578
1068	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;	1579	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
1069	$pl->deactivate;	1580	$pl->deactivate;
		1581	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1582	$pl->ob->check_score;
1070	$pl->invoke (cf::EVENT_PLAYER_QUIT);	1583	$pl->invoke (cf::EVENT_PLAYER_QUIT);
1071	$pl->ns->destroy if $pl->ns;	1584	$pl->ns->destroy if $pl->ns;
1072		1585
1073	my $path = playerdir $pl;	1586	my $path = playerdir $pl;
1074	my $temp = "$path~$cf::RUNTIME~deleting~";	1587	my $temp = "$path~$cf::RUNTIME~deleting~";
…		…
1110	or return [];	1623	or return [];
1111		1624
1112	my @logins;	1625	my @logins;
1113		1626
1114	for my $login (@$dirs) {	1627	for my $login (@$dirs) {
		1628	my $path = path $login;
		1629
		1630	# a .pst is a dead give-away for a valid player
		1631	# if no pst file found, open and chekc for blocked users
		1632	if (aio_stat "$path.pst") {
1115	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;	1633	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
1116	aio_read $fh, 0, 512, my $buf, 0 or next;	1634	aio_read $fh, 0, 512, my $buf, 0 or next;
1117	$buf !~ /^password -------------$/m or next; # official not-valid tag	1635	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1636	}
1118		1637
1119	utf8::decode $login;	1638	utf8::decode $login;
1120	push @logins, $login;	1639	push @logins, $login;
1121	}	1640	}
1122		1641
…		…
1149	}	1668	}
1150		1669
1151	\@paths	1670	\@paths
1152	}	1671	}
1153		1672
		1673	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1674
		1675	Expand deliantra pod fragments into protocol xml.
		1676
1154	=item $player->ext_reply ($msgid, %msg)	1677	=item $player->ext_reply ($msgid, @msg)
1155		1678
1156	Sends an ext reply to the player.	1679	Sends an ext reply to the player.
1157		1680
1158	=cut	1681	=cut
1159		1682
1160	sub ext_reply($$%) {	1683	sub ext_reply($$@) {
1161	my ($self, $id, %msg) = @_;	1684	my ($self, $id, @msg) = @_;
1162		1685
1163	$msg{msgid} = $id;	1686	$self->ns->ext_reply ($id, @msg)
1164
1165	$self->send ("ext " . cf::to_json \%msg);
1166	}	1687	}
1167		1688
1168	=item $player->ext_event ($type, %msg)	1689	=item $player->ext_msg ($type, @msg)
1169		1690
1170	Sends an ext event to the client.	1691	Sends an ext event to the client.
1171		1692
1172	=cut	1693	=cut
1173		1694
1174	sub ext_event($$%) {	1695	sub ext_msg($$@) {
1175	my ($self, $type, %msg) = @_;	1696	my ($self, $type, @msg) = @_;
1176		1697
1177	$self->ns->ext_event ($type, %msg);	1698	$self->ns->ext_msg ($type, @msg);
1178	}	1699	}
1179		1700
1180	=head3 cf::region	1701	=head3 cf::region
1181		1702
1182	=over 4	1703	=over 4
…		…
1185		1706
1186	package cf::region;	1707	package cf::region;
1187		1708
1188	=item cf::region::find_by_path $path	1709	=item cf::region::find_by_path $path
1189		1710
1190	Tries to decuce the probable region for a map knowing only its path.	1711	Tries to decuce the likely region for a map knowing only its path.
1191		1712
1192	=cut	1713	=cut
1193		1714
1194	sub find_by_path($) {	1715	sub find_by_path($) {
1195	my ($path) = @_;	1716	my ($path) = @_;
1196		1717
1197	my ($match, $specificity);	1718	my ($match, $specificity);
1198		1719
1199	for my $region (list) {	1720	for my $region (list) {
1200	if ($region->match && $path =~ $region->match) {	1721	if ($region->{match} && $path =~ $region->{match}) {
1201	($match, $specificity) = ($region, $region->specificity)	1722	($match, $specificity) = ($region, $region->specificity)
1202	if $region->specificity > $specificity;	1723	if $region->specificity > $specificity;
1203	}	1724	}
1204	}	1725	}
1205		1726
…		…
1226	our $MAX_RESET = 3600;	1747	our $MAX_RESET = 3600;
1227	our $DEFAULT_RESET = 3000;	1748	our $DEFAULT_RESET = 3000;
1228		1749
1229	sub generate_random_map {	1750	sub generate_random_map {
1230	my ($self, $rmp) = @_;	1751	my ($self, $rmp) = @_;
		1752
		1753	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1754
1231	# mit "rum" bekleckern, nicht	1755	# mit "rum" bekleckern, nicht
1232	$self->_create_random_map (	1756	$self->_create_random_map (
1233	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},	1757	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1234	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},	1758	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1235	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},	1759	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
…		…
1269	my ($self, $merge) = @_;	1793	my ($self, $merge) = @_;
1270		1794
1271	# we have to keep some variables in memory intact	1795	# we have to keep some variables in memory intact
1272	local $self->{path};	1796	local $self->{path};
1273	local $self->{load_path};	1797	local $self->{load_path};
1274	local $self->{deny_save};
1275	local $self->{deny_reset};
1276		1798
1277	$self->SUPER::thawer_merge ($merge);	1799	$self->SUPER::thawer_merge ($merge);
1278	}	1800	}
1279		1801
1280	sub normalise {	1802	sub normalise {
…		…
1327	$self->init; # pass $1 etc.	1849	$self->init; # pass $1 etc.
1328	return $self;	1850	return $self;
1329	}	1851	}
1330	}	1852	}
1331		1853
1332	Carp::carp "unable to resolve path '$path' (base '$base').";	1854	Carp::cluck "unable to resolve path '$path' (base '$base').";
1333	()	1855	()
1334	}	1856	}
1335		1857
1336	sub init {	1858	sub init {
1337	my ($self) = @_;	1859	my ($self) = @_;
…		…
1359		1881
1360	# the temporary/swap location	1882	# the temporary/swap location
1361	sub save_path {	1883	sub save_path {
1362	my ($self) = @_;	1884	my ($self) = @_;
1363		1885
1364	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1886	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
1365	"$TMPDIR/$path.map"	1887	"$TMPDIR/$path.map"
1366	}	1888	}
1367		1889
1368	# the unique path, undef == no special unique path	1890	# the unique path, undef == no special unique path
1369	sub uniq_path {	1891	sub uniq_path {
1370	my ($self) = @_;	1892	my ($self) = @_;
1371		1893
1372	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;	1894	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
1373	"$UNIQUEDIR/$path"	1895	"$UNIQUEDIR/$path"
1374	}	1896	}
1375		1897
1376	# and all this just because we cannot iterate over	1898	sub decay_objects {
1377	# all maps in C++...
1378	sub change_all_map_light {
1379	my ($change) = @_;	1899	my ($self) = @_;
1380		1900
1381	$_->change_map_light ($change)	1901	return if $self->{deny_reset};
1382	for grep $_->outdoor, values %cf::MAP;	1902
		1903	$self->do_decay_objects;
1383	}	1904	}
1384		1905
1385	sub unlink_save {	1906	sub unlink_save {
1386	my ($self) = @_;	1907	my ($self) = @_;
1387		1908
…		…
1392		1913
1393	sub load_header_from($) {	1914	sub load_header_from($) {
1394	my ($self, $path) = @_;	1915	my ($self, $path) = @_;
1395		1916
1396	utf8::encode $path;	1917	utf8::encode $path;
1397	#aio_open $path, O_RDONLY, 0	1918	my $f = new_from_file cf::object::thawer $path
1398	# or return;
1399
1400	$self->_load_header ($path)
1401	or return;	1919	or return;
		1920
		1921	$self->_load_header ($f)
		1922	or return;
		1923
		1924	local $MAP_LOADING{$self->{path}} = $self;
		1925	$f->resolve_delayed_derefs;
1402		1926
1403	$self->{load_path} = $path;	1927	$self->{load_path} = $path;
1404		1928
1405	1	1929	1
1406	}	1930	}
…		…
1445	$self->load_header_orig	1969	$self->load_header_orig
1446	or return;	1970	or return;
1447	$self->prepare_orig;	1971	$self->prepare_orig;
1448	}	1972	}
1449		1973
		1974	$self->{deny_reset} = 1
		1975	if $self->no_reset;
		1976
1450	$self->default_region (cf::region::find_by_path $self->{path})	1977	$self->default_region (cf::region::find_by_path $self->{path})
1451	unless $self->default_region;	1978	unless $self->default_region;
1452		1979
1453	1	1980	1
1454	}	1981	}
…		…
1457	sub find {	1984	sub find {
1458	my ($path, $origin) = @_;	1985	my ($path, $origin) = @_;
1459		1986
1460	$path = normalise $path, $origin && $origin->path;	1987	$path = normalise $path, $origin && $origin->path;
1461		1988
		1989	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
1462	cf::lock_wait "map_find:$path";	1990	my $guard2 = cf::lock_acquire "map_find:$path";
1463		1991
1464	$cf::MAP{$path} || do {	1992	$cf::MAP{$path} || do {
1465	my $guard = cf::lock_acquire "map_find:$path";
1466	my $map = new_from_path cf::map $path	1993	my $map = new_from_path cf::map $path
1467	or return;	1994	or return;
1468		1995
1469	$map->{last_save} = $cf::RUNTIME;	1996	$map->{last_save} = $cf::RUNTIME;
1470		1997
1471	$map->load_header	1998	$map->load_header
1472	or return;	1999	or return;
1473		2000
1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	2001	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1475	# doing this can freeze the server in a sync job, obviously	2002	# doing this can freeze the server in a sync job, obviously
1476	#$cf::WAIT_FOR_TICK->wait;	2003	#$cf::WAIT_FOR_TICK->wait;
		2004	undef $guard2;
		2005	undef $guard1;
1477	$map->reset;	2006	$map->reset;
1478	undef $guard;
1479	return find $path;	2007	return find $path;
1480	}	2008	}
1481		2009
1482	$cf::MAP{$path} = $map	2010	$cf::MAP{$path} = $map
1483	}	2011	}
1484	}	2012	}
1485		2013
1486	sub pre_load { }	2014	sub pre_load { }
1487	sub post_load { }	2015	#sub post_load { } # XS
1488		2016
1489	sub load {	2017	sub load {
1490	my ($self) = @_;	2018	my ($self) = @_;
1491		2019
1492	local $self->{deny_reset} = 1; # loading can take a long time	2020	local $self->{deny_reset} = 1; # loading can take a long time
1493		2021
1494	my $path = $self->{path};	2022	my $path = $self->{path};
1495		2023
1496	{	2024	{
1497	my $guard = cf::lock_acquire "map_load:$path";	2025	my $guard = cf::lock_acquire "map_data:$path";
1498		2026
		2027	return unless $self->valid;
1499	return if $self->in_memory != cf::MAP_SWAPPED;	2028	return unless $self->in_memory == cf::MAP_SWAPPED;
1500		2029
1501	$self->in_memory (cf::MAP_LOADING);	2030	$self->in_memory (cf::MAP_LOADING);
1502		2031
1503	$self->alloc;	2032	$self->alloc;
1504		2033
1505	$self->pre_load;	2034	$self->pre_load;
1506	Coro::cede;	2035	cf::cede_to_tick;
1507		2036
		2037	my $f = new_from_file cf::object::thawer $self->{load_path};
		2038	$f->skip_block;
1508	$self->_load_objects ($self->{load_path}, 1)	2039	$self->_load_objects ($f)
1509	or return;	2040	or return;
1510		2041
1511	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)	2042	$self->post_load_original
1512	if delete $self->{load_original};	2043	if delete $self->{load_original};
1513		2044
1514	if (my $uniq = $self->uniq_path) {	2045	if (my $uniq = $self->uniq_path) {
1515	utf8::encode $uniq;	2046	utf8::encode $uniq;
1516	if (aio_open $uniq, O_RDONLY, 0) {	2047	unless (aio_stat $uniq) {
		2048	if (my $f = new_from_file cf::object::thawer $uniq) {
1517	$self->clear_unique_items;	2049	$self->clear_unique_items;
1518	$self->_load_objects ($uniq, 0);	2050	$self->_load_objects ($f);
		2051	$f->resolve_delayed_derefs;
		2052	}
1519	}	2053	}
1520	}	2054	}
1521		2055
1522	Coro::cede;	2056	$f->resolve_delayed_derefs;
		2057
		2058	cf::cede_to_tick;
1523	# now do the right thing for maps	2059	# now do the right thing for maps
1524	$self->link_multipart_objects;	2060	$self->link_multipart_objects;
1525	$self->difficulty ($self->estimate_difficulty)	2061	$self->difficulty ($self->estimate_difficulty)
1526	unless $self->difficulty;	2062	unless $self->difficulty;
1527	Coro::cede;	2063	cf::cede_to_tick;
1528		2064
1529	unless ($self->{deny_activate}) {	2065	unless ($self->{deny_activate}) {
1530	$self->decay_objects;	2066	$self->decay_objects;
1531	$self->fix_auto_apply;	2067	$self->fix_auto_apply;
1532	$self->update_buttons;	2068	$self->update_buttons;
1533	Coro::cede;	2069	cf::cede_to_tick;
1534	$self->set_darkness_map;
1535	Coro::cede;
1536	$self->activate;	2070	$self->activate;
1537	}	2071	}
1538		2072
		2073	$self->{last_save} = $cf::RUNTIME;
		2074	$self->last_access ($cf::RUNTIME);
		2075
1539	$self->in_memory (cf::MAP_IN_MEMORY);	2076	$self->in_memory (cf::MAP_ACTIVE);
1540
1541	undef $guard;
1542	}	2077	}
1543		2078
1544	$self->post_load;	2079	$self->post_load;
1545	}	2080	}
1546		2081
…		…
1548	my ($self, $ob) = @_;	2083	my ($self, $ob) = @_;
1549		2084
1550	return find "~" . $ob->name . "/" . $self->{path}	2085	return find "~" . $ob->name . "/" . $self->{path}
1551	if $self->per_player;	2086	if $self->per_player;
1552		2087
		2088	# return find "?party/" . $ob->name . "/" . $self->{path}
		2089	# if $self->per_party;
		2090
1553	$self	2091	$self
1554	}	2092	}
1555		2093
1556	# find and load all maps in the 3x3 area around a map	2094	# find and load all maps in the 3x3 area around a map
1557	sub load_diag {	2095	sub load_neighbours {
1558	my ($map) = @_;	2096	my ($map) = @_;
1559		2097
1560	my @diag; # diagonal neighbours	2098	my @neigh; # diagonal neighbours
1561		2099
1562	for (0 .. 3) {	2100	for (0 .. 3) {
1563	my $neigh = $map->tile_path ($_)	2101	my $neigh = $map->tile_path ($_)
1564	or next;	2102	or next;
1565	$neigh = find $neigh, $map	2103	$neigh = find $neigh, $map
1566	or next;	2104	or next;
1567	$neigh->load;	2105	$neigh->load;
1568		2106
		2107	push @neigh,
1569	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],	2108	[$neigh->tile_path (($_ + 3) % 4), $neigh],
1570	[$neigh->tile_path (($_ + 1) % 4), $neigh];	2109	[$neigh->tile_path (($_ + 1) % 4), $neigh];
1571	}	2110	}
1572		2111
1573	for (@diag) {	2112	for (grep defined $_->[0], @neigh) {
		2113	my ($path, $origin) = @$_;
1574	my $neigh = find @$_	2114	my $neigh = find $path, $origin
1575	or next;	2115	or next;
1576	$neigh->load;	2116	$neigh->load;
1577	}	2117	}
1578	}	2118	}
1579		2119
…		…
1584	}	2124	}
1585		2125
1586	sub do_load_sync {	2126	sub do_load_sync {
1587	my ($map) = @_;	2127	my ($map) = @_;
1588		2128
		2129	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2130	if $Coro::current == $Coro::main;
		2131
1589	cf::sync_job { $map->load };	2132	cf::sync_job { $map->load };
1590	}	2133	}
1591		2134
1592	our %MAP_PREFETCH;	2135	our %MAP_PREFETCH;
1593	our $MAP_PREFETCHER = undef;	2136	our $MAP_PREFETCHER = undef;
1594		2137
1595	sub find_async {	2138	sub find_async {
1596	my ($path, $origin) = @_;	2139	my ($path, $origin, $load) = @_;
1597		2140
1598	$path = normalise $path, $origin && $origin->{path};	2141	$path = normalise $path, $origin && $origin->{path};
1599		2142
1600	if (my $map = $cf::MAP{$path}) {	2143	if (my $map = $cf::MAP{$path}) {
1601	return $map if $map->in_memory == cf::MAP_IN_MEMORY;	2144	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
1602	}	2145	}
1603		2146
1604	undef $MAP_PREFETCH{$path};	2147	$MAP_PREFETCH{$path} |= $load;
		2148
1605	$MAP_PREFETCHER ||= cf::async {	2149	$MAP_PREFETCHER ||= cf::async {
		2150	$Coro::current->{desc} = "map prefetcher";
		2151
1606	while (%MAP_PREFETCH) {	2152	while (%MAP_PREFETCH) {
1607	for my $path (keys %MAP_PREFETCH) {	2153	while (my ($k, $v) = each %MAP_PREFETCH) {
1608	my $map = find $path	2154	if (my $map = find $k) {
1609	or next;
1610	$map->load;	2155	$map->load if $v;
		2156	}
1611		2157
1612	delete $MAP_PREFETCH{$path};	2158	delete $MAP_PREFETCH{$k};
1613	}	2159	}
1614	}	2160	}
1615	undef $MAP_PREFETCHER;	2161	undef $MAP_PREFETCHER;
1616	};	2162	};
1617	$MAP_PREFETCHER->prio (6);	2163	$MAP_PREFETCHER->prio (6);
…		…
1620	}	2166	}
1621		2167
1622	sub save {	2168	sub save {
1623	my ($self) = @_;	2169	my ($self) = @_;
1624		2170
1625	my $lock = cf::lock_acquire "map_data:" . $self->path;	2171	my $lock = cf::lock_acquire "map_data:$self->{path}";
1626		2172
1627	$self->{last_save} = $cf::RUNTIME;	2173	$self->{last_save} = $cf::RUNTIME;
1628		2174
1629	return unless $self->dirty;	2175	return unless $self->dirty;
1630		2176
…		…
1636	return if $self->{deny_save};	2182	return if $self->{deny_save};
1637		2183
1638	local $self->{last_access} = $self->last_access;#d#	2184	local $self->{last_access} = $self->last_access;#d#
1639		2185
1640	cf::async {	2186	cf::async {
		2187	$Coro::current->{desc} = "map player save";
1641	$_->contr->save for $self->players;	2188	$_->contr->save for $self->players;
1642	};	2189	};
		2190
		2191	cf::get_slot 0.02;
1643		2192
1644	if ($uniq) {	2193	if ($uniq) {
1645	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);	2194	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1646	$self->_save_objects ($uniq, cf::IO_UNIQUES);	2195	$self->_save_objects ($uniq, cf::IO_UNIQUES);
1647	} else {	2196	} else {
…		…
1653	my ($self) = @_;	2202	my ($self) = @_;
1654		2203
1655	# save first because save cedes	2204	# save first because save cedes
1656	$self->save;	2205	$self->save;
1657		2206
1658	my $lock = cf::lock_acquire "map_data:" . $self->path;	2207	my $lock = cf::lock_acquire "map_data:$self->{path}";
1659		2208
1660	return if $self->players;	2209	return if $self->players;
1661	return if $self->in_memory != cf::MAP_IN_MEMORY;	2210	return if $self->in_memory != cf::MAP_ACTIVE;
1662	return if $self->{deny_save};	2211	return if $self->{deny_save};
1663		2212
		2213	$self->in_memory (cf::MAP_SWAPPED);
		2214
		2215	$self->deactivate;
		2216	$_->clear_links_to ($self) for values %cf::MAP;
1664	$self->clear;	2217	$self->clear;
1665	$self->in_memory (cf::MAP_SWAPPED);
1666	}	2218	}
1667		2219
1668	sub reset_at {	2220	sub reset_at {
1669	my ($self) = @_;	2221	my ($self) = @_;
1670		2222
1671	# TODO: safety, remove and allow resettable per-player maps	2223	# TODO: safety, remove and allow resettable per-player maps
1672	return 1e99 if $self->isa ("ext::map_per_player");#d#
1673	return 1e99 if $self->{deny_reset};	2224	return 1e99 if $self->{deny_reset};
1674		2225
1675	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	2226	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1676	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	2227	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1677		2228
…		…
1688	my ($self) = @_;	2239	my ($self) = @_;
1689		2240
1690	my $lock = cf::lock_acquire "map_data:$self->{path}";	2241	my $lock = cf::lock_acquire "map_data:$self->{path}";
1691		2242
1692	return if $self->players;	2243	return if $self->players;
1693	return if $self->isa ("ext::map_per_player");#d#
1694		2244
1695	warn "resetting map ", $self->path;#d#	2245	warn "resetting map ", $self->path, "\n";
1696		2246
1697	$self->in_memory (cf::MAP_SWAPPED);	2247	$self->in_memory (cf::MAP_SWAPPED);
1698		2248
1699	# need to save uniques path	2249	# need to save uniques path
1700	unless ($self->{deny_save}) {	2250	unless ($self->{deny_save}) {
…		…
1704	if $uniq;	2254	if $uniq;
1705	}	2255	}
1706		2256
1707	delete $cf::MAP{$self->path};	2257	delete $cf::MAP{$self->path};
1708		2258
		2259	$self->deactivate;
		2260	$_->clear_links_to ($self) for values %cf::MAP;
1709	$self->clear;	2261	$self->clear;
1710
1711	$_->clear_links_to ($self) for values %cf::MAP;
1712		2262
1713	$self->unlink_save;	2263	$self->unlink_save;
1714	$self->destroy;	2264	$self->destroy;
1715	}	2265	}
1716		2266
1717	my $nuke_counter = "aaaa";	2267	my $nuke_counter = "aaaa";
1718		2268
1719	sub nuke {	2269	sub nuke {
1720	my ($self) = @_;	2270	my ($self) = @_;
1721		2271
		2272	{
		2273	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2274
1722	delete $cf::MAP{$self->path};	2275	delete $cf::MAP{$self->path};
1723		2276
1724	$self->unlink_save;	2277	$self->unlink_save;
1725		2278
1726	bless $self, "cf::map";	2279	bless $self, "cf::map";
1727	delete $self->{deny_reset};	2280	delete $self->{deny_reset};
1728	$self->{deny_save} = 1;	2281	$self->{deny_save} = 1;
1729	$self->reset_timeout (1);	2282	$self->reset_timeout (1);
1730	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));	2283	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
1731		2284
1732	$cf::MAP{$self->path} = $self;	2285	$cf::MAP{$self->path} = $self;
		2286	}
1733		2287
1734	$self->reset; # polite request, might not happen	2288	$self->reset; # polite request, might not happen
		2289	}
		2290
		2291	=item $maps = cf::map::tmp_maps
		2292
		2293	Returns an arrayref with all map paths of currently instantiated and saved
		2294	maps. May block.
		2295
		2296	=cut
		2297
		2298	sub tmp_maps() {
		2299	[
		2300	map {
		2301	utf8::decode $_;
		2302	/\.map$/
		2303	? normalise $_
		2304	: ()
		2305	} @{ aio_readdir $TMPDIR or [] }
		2306	]
		2307	}
		2308
		2309	=item $maps = cf::map::random_maps
		2310
		2311	Returns an arrayref with all map paths of currently instantiated and saved
		2312	random maps. May block.
		2313
		2314	=cut
		2315
		2316	sub random_maps() {
		2317	[
		2318	map {
		2319	utf8::decode $_;
		2320	/\.map$/
		2321	? normalise "?random/$_"
		2322	: ()
		2323	} @{ aio_readdir $RANDOMDIR or [] }
		2324	]
1735	}	2325	}
1736		2326
1737	=item cf::map::unique_maps	2327	=item cf::map::unique_maps
1738		2328
1739	Returns an arrayref of paths of all shared maps that have	2329	Returns an arrayref of paths of all shared maps that have
1740	instantiated unique items. May block.	2330	instantiated unique items. May block.
1741		2331
1742	=cut	2332	=cut
1743		2333
1744	sub unique_maps() {	2334	sub unique_maps() {
1745	my $files = aio_readdir $UNIQUEDIR	2335	[
1746	or return;	2336	map {
1747
1748	my @paths;
1749
1750	for (@$files) {
1751	utf8::decode $_;	2337	utf8::decode $_;
1752	next if /\.pst$/;	2338	s/\.map$//; # TODO future compatibility hack
1753	next unless /^$PATH_SEP/o;	2339	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
1754		2340	? ()
1755	push @paths, cf::map::normalise $_;	2341	: normalise $_
		2342	} @{ aio_readdir $UNIQUEDIR or [] }
1756	}	2343	]
1757
1758	\@paths
1759	}	2344	}
1760		2345
1761	package cf;	2346	=item cf::map::static_maps
		2347
		2348	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2349	file in the shared directory excluding F</styles> and F</editor>). May
		2350	block.
		2351
		2352	=cut
		2353
		2354	sub static_maps() {
		2355	my @dirs = "";
		2356	my @maps;
		2357
		2358	while (@dirs) {
		2359	my $dir = shift @dirs;
		2360
		2361	next if $dir eq "/styles" || $dir eq "/editor";
		2362
		2363	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2364	or return;
		2365
		2366	for (@$files) {
		2367	s/\.map$// or next;
		2368	utf8::decode $_;
		2369	push @maps, "$dir/$_";
		2370	}
		2371
		2372	push @dirs, map "$dir/$_", @$dirs;
		2373	}
		2374
		2375	\@maps
		2376	}
1762		2377
1763	=back	2378	=back
1764		2379
1765	=head3 cf::object	2380	=head3 cf::object
1766		2381
…		…
1770		2385
1771	=over 4	2386	=over 4
1772		2387
1773	=item $ob->inv_recursive	2388	=item $ob->inv_recursive
1774		2389
1775	Returns the inventory of the object _and_ their inventories, recursively.	2390	Returns the inventory of the object I<and> their inventories, recursively,
		2391	but I<not> the object itself.
1776		2392
1777	=cut	2393	=cut
1778		2394
1779	sub inv_recursive_;	2395	sub inv_recursive_;
1780	sub inv_recursive_ {	2396	sub inv_recursive_ {
…		…
1783		2399
1784	sub inv_recursive {	2400	sub inv_recursive {
1785	inv_recursive_ inv $_[0]	2401	inv_recursive_ inv $_[0]
1786	}	2402	}
1787		2403
		2404	=item $ref = $ob->ref
		2405
		2406	Creates and returns a persistent reference to an object that can be stored as a string.
		2407
		2408	=item $ob = cf::object::deref ($refstring)
		2409
		2410	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2411	even if the object actually exists. May block.
		2412
		2413	=cut
		2414
		2415	sub deref {
		2416	my ($ref) = @_;
		2417
		2418	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2419	my ($uuid, $name) = ($1, $2);
		2420	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2421	or return;
		2422	$pl->ob->uuid eq $uuid
		2423	or return;
		2424
		2425	$pl->ob
		2426	} else {
		2427	warn "$ref: cannot resolve object reference\n";
		2428	undef
		2429	}
		2430	}
		2431
1788	package cf;	2432	package cf;
1789		2433
1790	=back	2434	=back
1791		2435
1792	=head3 cf::object::player	2436	=head3 cf::object::player
…		…
1798	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2442	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
1799	can be C<undef>. Does the right thing when the player is currently in a	2443	can be C<undef>. Does the right thing when the player is currently in a
1800	dialogue with the given NPC character.	2444	dialogue with the given NPC character.
1801		2445
1802	=cut	2446	=cut
		2447
		2448	our $SAY_CHANNEL = {
		2449	id => "say",
		2450	title => "Map",
		2451	reply => "say ",
		2452	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2453	};
		2454
		2455	our $CHAT_CHANNEL = {
		2456	id => "chat",
		2457	title => "Chat",
		2458	reply => "chat ",
		2459	tooltip => "Player chat and shouts, global to the server.",
		2460	};
1803		2461
1804	# rough implementation of a future "reply" method that works	2462	# rough implementation of a future "reply" method that works
1805	# with dialog boxes.	2463	# with dialog boxes.
1806	#TODO: the first argument must go, split into a $npc->reply_to ( method	2464	#TODO: the first argument must go, split into a $npc->reply_to ( method
1807	sub cf::object::player::reply($$$;$) {	2465	sub cf::object::player::reply($$$;$) {
…		…
1809		2467
1810	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2468	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1811		2469
1812	if ($self->{record_replies}) {	2470	if ($self->{record_replies}) {
1813	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2471	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2472
1814	} else {	2473	} else {
		2474	my $pl = $self->contr;
		2475
		2476	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2477	my $dialog = $pl->{npc_dialog};
		2478	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2479
		2480	} else {
1815	$msg = $npc->name . " says: $msg" if $npc;	2481	$msg = $npc->name . " says: $msg" if $npc;
1816	$self->message ($msg, $flags);	2482	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2483	}
1817	}	2484	}
		2485	}
		2486
		2487	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2488
		2489	=cut
		2490
		2491	sub cf::object::send_msg {
		2492	my $pl = shift->contr
		2493	or return;
		2494	$pl->send_msg (@_);
1818	}	2495	}
1819		2496
1820	=item $player_object->may ("access")	2497	=item $player_object->may ("access")
1821		2498
1822	Returns wether the given player is authorized to access resource "access"	2499	Returns wether the given player is authorized to access resource "access"
…		…
1835		2512
1836	=item $player_object->enter_link	2513	=item $player_object->enter_link
1837		2514
1838	Freezes the player and moves him/her to a special map (C<{link}>).	2515	Freezes the player and moves him/her to a special map (C<{link}>).
1839		2516
1840	The player should be reasonably safe there for short amounts of time. You	2517	The player should be reasonably safe there for short amounts of time (e.g.
1841	I<MUST> call C<leave_link> as soon as possible, though.	2518	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2519	though, as the palyer cannot control the character while it is on the link
		2520	map.
1842		2521
1843	Will never block.	2522	Will never block.
1844		2523
1845	=item $player_object->leave_link ($map, $x, $y)	2524	=item $player_object->leave_link ($map, $x, $y)
1846		2525
…		…
1869	$self->deactivate_recursive;	2548	$self->deactivate_recursive;
1870		2549
1871	return if UNIVERSAL::isa $self->map, "ext::map_link";	2550	return if UNIVERSAL::isa $self->map, "ext::map_link";
1872		2551
1873	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2552	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1874	if $self->map;	2553	if $self->map && $self->map->{path} ne "{link}";
1875		2554
1876	$self->enter_map ($LINK_MAP || link_map, 10, 10);	2555	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1877	}	2556	}
1878		2557
1879	sub cf::object::player::leave_link {	2558	sub cf::object::player::leave_link {
1880	my ($self, $map, $x, $y) = @_;	2559	my ($self, $map, $x, $y) = @_;
		2560
		2561	return unless $self->contr->active;
1881		2562
1882	my $link_pos = delete $self->{_link_pos};	2563	my $link_pos = delete $self->{_link_pos};
1883		2564
1884	unless ($map) {	2565	unless ($map) {
1885	# restore original map position	2566	# restore original map position
…		…
1896	($x, $y) = (-1, -1)	2577	($x, $y) = (-1, -1)
1897	unless (defined $x) && (defined $y);	2578	unless (defined $x) && (defined $y);
1898		2579
1899	# use -1 or undef as default coordinates, not 0, 0	2580	# use -1 or undef as default coordinates, not 0, 0
1900	($x, $y) = ($map->enter_x, $map->enter_y)	2581	($x, $y) = ($map->enter_x, $map->enter_y)
1901	if $x <=0 && $y <= 0;	2582	if $x <= 0 && $y <= 0;
1902		2583
1903	$map->load;	2584	$map->load;
1904	$map->load_diag;	2585	$map->load_neighbours;
1905		2586
1906	return unless $self->contr->active;	2587	return unless $self->contr->active;
1907	$self->activate_recursive;
1908		2588
1909	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2589	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1910	$self->enter_map ($map, $x, $y);	2590	$self->enter_map ($map, $x, $y);
1911	}
1912		2591
1913	cf::player->attach (	2592	# only activate afterwards, to support waiting in hooks
1914	on_logout => sub {	2593	$self->activate_recursive;
1915	my ($pl) = @_;	2594	}
1916		2595
1917	# abort map switching before logout	2596	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
1918	if ($pl->ob->{_link_pos}) {
1919	cf::sync_job {
1920	$pl->ob->leave_link
1921	};
1922	}
1923	},
1924	on_login => sub {
1925	my ($pl) = @_;
1926		2597
1927	# try to abort aborted map switching on player login :)	2598	Moves the player to the given map-path and coordinates by first freezing
1928	# should happen only on crashes	2599	her, loading and preparing them map, calling the provided $check callback
1929	if ($pl->ob->{_link_pos}) {	2600	that has to return the map if sucecssful, and then unfreezes the player on
1930	$pl->ob->enter_link;	2601	the new (success) or old (failed) map position. In either case, $done will
1931	(async {	2602	be called at the end of this process.
1932	$pl->ob->reply (undef,
1933	"There was an internal problem at your last logout, "
1934	. "the server will try to bring you to your intended destination in a second.",
1935	cf::NDI_RED);
1936	# we need this sleep as the login has a concurrent enter_exit running
1937	# and this sleep increases chances of the player not ending up in scorn
1938	Coro::Timer::sleep 1;
1939	$pl->ob->leave_link;
1940	})->prio (2);
1941	}
1942	},
1943	);
1944		2603
1945	=item $player_object->goto ($path, $x, $y)	2604	Note that $check will be called with a potentially non-loaded map, so if
		2605	it needs a loaded map it has to call C<< ->load >>.
1946		2606
1947	=cut	2607	=cut
		2608
		2609	our $GOTOGEN;
1948		2610
1949	sub cf::object::player::goto {	2611	sub cf::object::player::goto {
1950	my ($self, $path, $x, $y) = @_;	2612	my ($self, $path, $x, $y, $check, $done) = @_;
		2613
		2614	# do generation counting so two concurrent goto's will be executed in-order
		2615	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1951		2616
1952	$self->enter_link;	2617	$self->enter_link;
1953		2618
1954	(async {	2619	(async {
		2620	$Coro::current->{desc} = "player::goto $path $x $y";
		2621
		2622	# *tag paths override both path and x|y
		2623	if ($path =~ /^\*(.*)$/) {
		2624	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2625	my $ob = $obs[rand @obs];
		2626
		2627	# see if we actually can go there
		2628	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2629	$ob = $obs[rand @obs];
		2630	} else {
		2631	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2632	}
		2633	# else put us there anyways for now #d#
		2634
		2635	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2636	} else {
		2637	($path, $x, $y) = (undef, undef, undef);
		2638	}
		2639	}
		2640
1955	my $map = eval {	2641	my $map = eval {
1956	my $map = cf::map::find $path;	2642	my $map = defined $path ? cf::map::find $path : undef;
		2643
		2644	if ($map) {
1957	$map = $map->customise_for ($self) if $map;	2645	$map = $map->customise_for ($self);
		2646	$map = $check->($map) if $check && $map;
		2647	} else {
		2648	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2649	}
		2650
1958	$map	2651	$map
		2652	};
		2653
		2654	if ($@) {
		2655	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2656	LOG llevError | logBacktrace, Carp::longmess $@;
1959	} or	2657	}
1960	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1961		2658
		2659	if ($gen == $self->{_goto_generation}) {
		2660	delete $self->{_goto_generation};
1962	$self->leave_link ($map, $x, $y);	2661	$self->leave_link ($map, $x, $y);
		2662	}
		2663
		2664	$done->() if $done;
1963	})->prio (1);	2665	})->prio (1);
1964	}	2666	}
1965		2667
1966	=item $player_object->enter_exit ($exit_object)	2668	=item $player_object->enter_exit ($exit_object)
1967		2669
…		…
1987	}	2689	}
1988		2690
1989	sub prepare_random_map {	2691	sub prepare_random_map {
1990	my ($exit) = @_;	2692	my ($exit) = @_;
1991		2693
1992	my $guard = cf::lock_acquire "exit_prepare:$exit";
1993
1994	# all this does is basically replace the /! path by	2694	# all this does is basically replace the /! path by
1995	# a new random map path (?random/...) with a seed	2695	# a new random map path (?random/...) with a seed
1996	# that depends on the exit object	2696	# that depends on the exit object
1997		2697
1998	my $rmp = parse_random_map_params $exit->msg;	2698	my $rmp = parse_random_map_params $exit->msg;
…		…
2000	if ($exit->map) {	2700	if ($exit->map) {
2001	$rmp->{region} = $exit->region->name;	2701	$rmp->{region} = $exit->region->name;
2002	$rmp->{origin_map} = $exit->map->path;	2702	$rmp->{origin_map} = $exit->map->path;
2003	$rmp->{origin_x} = $exit->x;	2703	$rmp->{origin_x} = $exit->x;
2004	$rmp->{origin_y} = $exit->y;	2704	$rmp->{origin_y} = $exit->y;
		2705
		2706	$exit->map->touch;
2005	}	2707	}
2006		2708
2007	$rmp->{random_seed} ||= $exit->random_seed;	2709	$rmp->{random_seed} ||= $exit->random_seed;
2008		2710
2009	my $data = cf::to_json $rmp;	2711	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
2010	my $md5 = Digest::MD5::md5_hex $data;	2712	my $md5 = Digest::MD5::md5_hex $data;
2011	my $meta = "$RANDOMDIR/$md5.meta";	2713	my $meta = "$RANDOMDIR/$md5.meta";
2012		2714
2013	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {	2715	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
2014	aio_write $fh, 0, (length $data), $data, 0;	2716	aio_write $fh, 0, (length $data), $data, 0;
2015	undef $fh;	2717	undef $fh;
2016	aio_rename "$meta~", $meta;	2718	aio_rename "$meta~", $meta;
2017		2719
		2720	my $slaying = "?random/$md5";
		2721
		2722	if ($exit->valid) {
2018	$exit->slaying ("?random/$md5");	2723	$exit->slaying ("?random/$md5");
2019	$exit->msg (undef);	2724	$exit->msg (undef);
		2725	}
2020	}	2726	}
2021	}	2727	}
2022		2728
2023	sub cf::object::player::enter_exit {	2729	sub cf::object::player::enter_exit {
2024	my ($self, $exit) = @_;	2730	my ($self, $exit) = @_;
2025		2731
2026	return unless $self->type == cf::PLAYER;	2732	return unless $self->type == cf::PLAYER;
2027		2733
2028	if ($exit->slaying eq "/!") {
2029	#TODO: this should de-fi-ni-te-ly not be a sync-job
2030	# the problem is that $exit might not survive long enough
2031	# so it needs to be done right now, right here
2032	cf::sync_job { prepare_random_map $exit };
2033	}
2034
2035	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
2036	my $hp = $exit->stats->hp;
2037	my $sp = $exit->stats->sp;
2038
2039	$self->enter_link;	2734	$self->enter_link;
2040		2735
2041	(async {	2736	(async {
2042	$self->deactivate_recursive; # just to be sure	2737	$Coro::current->{desc} = "enter_exit";
		2738
2043	unless (eval {	2739	unless (eval {
		2740	$self->deactivate_recursive; # just to be sure
		2741
		2742	# random map handling
		2743	{
		2744	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2745
		2746	prepare_random_map $exit
		2747	if $exit->slaying eq "/!";
		2748	}
		2749
		2750	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2751	my $x = $exit->stats->hp;
		2752	my $y = $exit->stats->sp;
		2753
2044	$self->goto ($slaying, $hp, $sp);	2754	$self->goto ($map, $x, $y);
2045		2755
		2756	# if exit is damned, update players death & WoR home-position
		2757	$self->contr->savebed ($map, $x, $y)
		2758	if $exit->flag (cf::FLAG_DAMNED);
		2759
2046	1;	2760	1
2047	}) {	2761	}) {
2048	$self->message ("Something went wrong deep within the crossfire server. "	2762	$self->message ("Something went wrong deep within the deliantra server. "
2049	. "I'll try to bring you back to the map you were before. "	2763	. "I'll try to bring you back to the map you were before. "
2050	. "Please report this to the dungeon master!",	2764	. "Please report this to the dungeon master!",
2051	cf::NDI_UNIQUE | cf::NDI_RED);	2765	cf::NDI_UNIQUE | cf::NDI_RED);
2052		2766
2053	warn "ERROR in enter_exit: $@";	2767	warn "ERROR in enter_exit: $@";
…		…
2072		2786
2073	utf8::encode $text;	2787	utf8::encode $text;
2074	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2788	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2075	}	2789	}
2076		2790
		2791	=item $client->send_big_packet ($pkt)
		2792
		2793	Like C<send_packet>, but tries to compress large packets, and fragments
		2794	them as required.
		2795
		2796	=cut
		2797
		2798	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2799
		2800	sub cf::client::send_big_packet {
		2801	my ($self, $pkt) = @_;
		2802
		2803	# try lzf for large packets
		2804	$pkt = "lzf " . Compress::LZF::compress $pkt
		2805	if 1024 <= length $pkt and $self->{can_lzf};
		2806
		2807	# split very large packets
		2808	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2809	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2810	$pkt = "frag";
		2811	}
		2812
		2813	$self->send_packet ($pkt);
		2814	}
		2815
		2816	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2817
		2818	Send a drawinfo or msg packet to the client, formatting the msg for the
		2819	client if neccessary. C<$type> should be a string identifying the type of
		2820	the message, with C<log> being the default. If C<$color> is negative, suppress
		2821	the message unless the client supports the msg packet.
		2822
		2823	=cut
		2824
		2825	# non-persistent channels (usually the info channel)
		2826	our %CHANNEL = (
		2827	"c/motd" => {
		2828	id => "infobox",
		2829	title => "MOTD",
		2830	reply => undef,
		2831	tooltip => "The message of the day",
		2832	},
		2833	"c/identify" => {
		2834	id => "infobox",
		2835	title => "Identify",
		2836	reply => undef,
		2837	tooltip => "Items recently identified",
		2838	},
		2839	"c/examine" => {
		2840	id => "infobox",
		2841	title => "Examine",
		2842	reply => undef,
		2843	tooltip => "Signs and other items you examined",
		2844	},
		2845	"c/shopinfo" => {
		2846	id => "infobox",
		2847	title => "Shop Info",
		2848	reply => undef,
		2849	tooltip => "What your bargaining skill tells you about the shop",
		2850	},
		2851	"c/book" => {
		2852	id => "infobox",
		2853	title => "Book",
		2854	reply => undef,
		2855	tooltip => "The contents of a note or book",
		2856	},
		2857	"c/lookat" => {
		2858	id => "infobox",
		2859	title => "Look",
		2860	reply => undef,
		2861	tooltip => "What you saw there",
		2862	},
		2863	"c/who" => {
		2864	id => "infobox",
		2865	title => "Players",
		2866	reply => undef,
		2867	tooltip => "Shows players who are currently online",
		2868	},
		2869	"c/body" => {
		2870	id => "infobox",
		2871	title => "Body Parts",
		2872	reply => undef,
		2873	tooltip => "Shows which body parts you posess and are available",
		2874	},
		2875	"c/statistics" => {
		2876	id => "infobox",
		2877	title => "Statistics",
		2878	reply => undef,
		2879	tooltip => "Shows your primary statistics",
		2880	},
		2881	"c/skills" => {
		2882	id => "infobox",
		2883	title => "Skills",
		2884	reply => undef,
		2885	tooltip => "Shows your experience per skill and item power",
		2886	},
		2887	"c/shopitems" => {
		2888	id => "infobox",
		2889	title => "Shop Items",
		2890	reply => undef,
		2891	tooltip => "Shows the items currently for sale in this shop",
		2892	},
		2893	"c/resistances" => {
		2894	id => "infobox",
		2895	title => "Resistances",
		2896	reply => undef,
		2897	tooltip => "Shows your resistances",
		2898	},
		2899	"c/pets" => {
		2900	id => "infobox",
		2901	title => "Pets",
		2902	reply => undef,
		2903	tooltip => "Shows information abotu your pets/a specific pet",
		2904	},
		2905	"c/perceiveself" => {
		2906	id => "infobox",
		2907	title => "Perceive Self",
		2908	reply => undef,
		2909	tooltip => "You gained detailed knowledge about yourself",
		2910	},
		2911	"c/uptime" => {
		2912	id => "infobox",
		2913	title => "Uptime",
		2914	reply => undef,
		2915	tooltip => "How long the server has been running since last restart",
		2916	},
		2917	"c/mapinfo" => {
		2918	id => "infobox",
		2919	title => "Map Info",
		2920	reply => undef,
		2921	tooltip => "Information related to the maps",
		2922	},
		2923	"c/party" => {
		2924	id => "party",
		2925	title => "Party",
		2926	reply => "gsay ",
		2927	tooltip => "Messages and chat related to your party",
		2928	},
		2929	"c/death" => {
		2930	id => "death",
		2931	title => "Death",
		2932	reply => undef,
		2933	tooltip => "Reason for and more info about your most recent death",
		2934	},
		2935	"c/say" => $SAY_CHANNEL,
		2936	"c/chat" => $CHAT_CHANNEL,
		2937	);
		2938
		2939	sub cf::client::send_msg {
		2940	my ($self, $channel, $msg, $color, @extra) = @_;
		2941
		2942	$msg = $self->pl->expand_cfpod ($msg)
		2943	unless $color & cf::NDI_VERBATIM;
		2944
		2945	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2946
		2947	# check predefined channels, for the benefit of C
		2948	if ($CHANNEL{$channel}) {
		2949	$channel = $CHANNEL{$channel};
		2950
		2951	$self->ext_msg (channel_info => $channel);
		2952	$channel = $channel->{id};
		2953
		2954	} elsif (ref $channel) {
		2955	# send meta info to client, if not yet sent
		2956	unless (exists $self->{channel}{$channel->{id}}) {
		2957	$self->{channel}{$channel->{id}} = $channel;
		2958	$self->ext_msg (channel_info => $channel);
		2959	}
		2960
		2961	$channel = $channel->{id};
		2962	}
		2963
		2964	return unless @extra || length $msg;
		2965
		2966	# default colour, mask it out
		2967	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2968	if $color & cf::NDI_DEF;
		2969
		2970	my $pkt = "msg "
		2971	. $self->{json_coder}->encode (
		2972	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		2973	);
		2974
		2975	$self->send_big_packet ($pkt);
		2976	}
		2977
2077	=item $client->ext_event ($type, %msg)	2978	=item $client->ext_msg ($type, @msg)
2078		2979
2079	Sends an exti event to the client.	2980	Sends an ext event to the client.
2080		2981
2081	=cut	2982	=cut
2082		2983
2083	sub cf::client::ext_event($$%) {	2984	sub cf::client::ext_msg($$@) {
2084	my ($self, $type, %msg) = @_;	2985	my ($self, $type, @msg) = @_;
2085		2986
		2987	if ($self->extcmd == 2) {
		2988	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2989	} elsif ($self->extcmd == 1) { # TODO: remove
2086	$msg{msgtype} = "event_$type";	2990	push @msg, msgtype => "event_$type";
2087	$self->send_packet ("ext " . cf::to_json \%msg);	2991	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2992	}
		2993	}
		2994
		2995	=item $client->ext_reply ($msgid, @msg)
		2996
		2997	Sends an ext reply to the client.
		2998
		2999	=cut
		3000
		3001	sub cf::client::ext_reply($$@) {
		3002	my ($self, $id, @msg) = @_;
		3003
		3004	if ($self->extcmd == 2) {
		3005	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3006	} elsif ($self->extcmd == 1) {
		3007	#TODO: version 1, remove
		3008	unshift @msg, msgtype => "reply", msgid => $id;
		3009	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3010	}
2088	}	3011	}
2089		3012
2090	=item $success = $client->query ($flags, "text", \&cb)	3013	=item $success = $client->query ($flags, "text", \&cb)
2091		3014
2092	Queues a query to the client, calling the given callback with	3015	Queues a query to the client, calling the given callback with
2093	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	3016	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2094	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	3017	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2095		3018
2096	Queries can fail, so check the return code. Or don't, as queries will become	3019	Queries can fail, so check the return code. Or don't, as queries will
2097	reliable at some point in the future.	3020	become reliable at some point in the future.
2098		3021
2099	=cut	3022	=cut
2100		3023
2101	sub cf::client::query {	3024	sub cf::client::query {
2102	my ($self, $flags, $text, $cb) = @_;	3025	my ($self, $flags, $text, $cb) = @_;
…		…
2110	utf8::encode $text;	3033	utf8::encode $text;
2111	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	3034	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2112		3035
2113	$self->send_packet ($self->{query_queue}[0][0])	3036	$self->send_packet ($self->{query_queue}[0][0])
2114	if @{ $self->{query_queue} } == 1;	3037	if @{ $self->{query_queue} } == 1;
		3038
		3039	1
2115	}	3040	}
2116		3041
2117	cf::client->attach (	3042	cf::client->attach (
		3043	on_connect => sub {
		3044	my ($ns) = @_;
		3045
		3046	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3047	},
2118	on_reply => sub {	3048	on_reply => sub {
2119	my ($ns, $msg) = @_;	3049	my ($ns, $msg) = @_;
2120		3050
2121	# this weird shuffling is so that direct followup queries	3051	# this weird shuffling is so that direct followup queries
2122	# get handled first	3052	# get handled first
…		…
2134	} else {	3064	} else {
2135	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	3065	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2136	}	3066	}
2137	}	3067	}
2138	},	3068	},
		3069	on_exticmd => sub {
		3070	my ($ns, $buf) = @_;
		3071
		3072	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3073
		3074	if (ref $msg) {
		3075	my ($type, $reply, @payload) =
		3076	"ARRAY" eq ref $msg
		3077	? @$msg
		3078	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3079
		3080	my @reply;
		3081
		3082	if (my $cb = $EXTICMD{$type}) {
		3083	@reply = $cb->($ns, @payload);
		3084	}
		3085
		3086	$ns->ext_reply ($reply, @reply)
		3087	if $reply;
		3088
		3089	} else {
		3090	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3091	}
		3092
		3093	cf::override;
		3094	},
2139	);	3095	);
2140		3096
2141	=item $client->async (\&cb)	3097	=item $client->async (\&cb)
2142		3098
2143	Create a new coroutine, running the specified callback. The coroutine will	3099	Create a new coroutine, running the specified callback. The coroutine will
…		…
2184	our $safe = new Safe "safe";	3140	our $safe = new Safe "safe";
2185	our $safe_hole = new Safe::Hole;	3141	our $safe_hole = new Safe::Hole;
2186		3142
2187	$SIG{FPE} = 'IGNORE';	3143	$SIG{FPE} = 'IGNORE';
2188		3144
2189	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3145	$safe->permit_only (Opcode::opset qw(
		3146	:base_core :base_mem :base_orig :base_math :base_loop
		3147	grepstart grepwhile mapstart mapwhile
		3148	sort time
		3149	));
2190		3150
2191	# here we export the classes and methods available to script code	3151	# here we export the classes and methods available to script code
2192		3152
2193	=pod	3153	=pod
2194		3154
2195	The following functions and methods are available within a safe environment:	3155	The following functions and methods are available within a safe environment:
2196		3156
2197	cf::object contr pay_amount pay_player map	3157	cf::object
		3158	contr pay_amount pay_player map x y force_find force_add destroy
		3159	insert remove name archname title slaying race decrease split
		3160	value
		3161
2198	cf::object::player player	3162	cf::object::player
2199	cf::player peaceful	3163	player
2200	cf::map trigger	3164
		3165	cf::player
		3166	peaceful
		3167
		3168	cf::map
		3169	trigger
2201		3170
2202	=cut	3171	=cut
2203		3172
2204	for (	3173	for (
2205	["cf::object" => qw(contr pay_amount pay_player map)],	3174	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3175	insert remove inv nrof name archname title slaying race
		3176	decrease split destroy change_exp value msg lore send_msg)],
2206	["cf::object::player" => qw(player)],	3177	["cf::object::player" => qw(player)],
2207	["cf::player" => qw(peaceful)],	3178	["cf::player" => qw(peaceful send_msg)],
2208	["cf::map" => qw(trigger)],	3179	["cf::map" => qw(trigger)],
2209	) {	3180	) {
2210	no strict 'refs';	3181	no strict 'refs';
2211	my ($pkg, @funs) = @$_;	3182	my ($pkg, @funs) = @$_;
2212	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3183	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
…		…
2230		3201
2231	my $qcode = $code;	3202	my $qcode = $code;
2232	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3203	$qcode =~ s/"/‟/g; # not allowed in #line filenames
2233	$qcode =~ s/\n/\\n/g;	3204	$qcode =~ s/\n/\\n/g;
2234		3205
		3206	%vars = (_dummy => 0) unless %vars;
		3207
		3208	my @res;
2235	local $_;	3209	local $_;
2236	local @safe::cf::_safe_eval_args = values %vars;
2237		3210
2238	my $eval =	3211	my $eval =
2239	"do {\n"	3212	"do {\n"
2240	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3213	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
2241	. "#line 0 \"{$qcode}\"\n"	3214	. "#line 0 \"{$qcode}\"\n"
2242	. $code	3215	. $code
2243	. "\n}"	3216	. "\n}"
2244	;	3217	;
2245		3218
		3219	if ($CFG{safe_eval}) {
2246	sub_generation_inc;	3220	sub_generation_inc;
		3221	local @safe::cf::_safe_eval_args = values %vars;
2247	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3222	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
2248	sub_generation_inc;	3223	sub_generation_inc;
		3224	} else {
		3225	local @cf::_safe_eval_args = values %vars;
		3226	@res = wantarray ? eval eval : scalar eval $eval;
		3227	}
2249		3228
2250	if ($@) {	3229	if ($@) {
2251	warn "$@";	3230	warn "$@";
2252	warn "while executing safe code '$code'\n";	3231	warn "while executing safe code '$code'\n";
2253	warn "with arguments " . (join " ", %vars) . "\n";	3232	warn "with arguments " . (join " ", %vars) . "\n";
…		…
2272	=cut	3251	=cut
2273		3252
2274	sub register_script_function {	3253	sub register_script_function {
2275	my ($fun, $cb) = @_;	3254	my ($fun, $cb) = @_;
2276		3255
2277	no strict 'refs';	3256	$fun = "safe::$fun" if $CFG{safe_eval};
2278	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3257	*$fun = $safe_hole->wrap ($cb);
2279	}	3258	}
2280		3259
2281	=back	3260	=back
2282		3261
2283	=cut	3262	=cut
2284
2285	#############################################################################
2286
2287	=head2 EXTENSION DATABASE SUPPORT
2288
2289	Crossfire maintains a very simple database for extension use. It can
2290	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2291	convert to/from binary).
2292
2293	The parameter C<$family> should best start with the name of the extension
2294	using it, it should be unique.
2295
2296	=over 4
2297
2298	=item $value = cf::db_get $family => $key
2299
2300	Returns a single value from the database.
2301
2302	=item cf::db_put $family => $key => $value
2303
2304	Stores the given C<$value> in the family.
2305
2306	=cut
2307
2308	our $DB;
2309
2310	sub db_init {
2311	unless ($DB) {
2312	$DB = BDB::db_create $DB_ENV;
2313
2314	cf::sync_job {
2315	eval {
2316	$DB->set_flags (BDB::CHKSUM);
2317
2318	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2319	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2320	cf::cleanup "db_open(db): $!" if $!;
2321	};
2322	cf::cleanup "db_open(db): $@" if $@;
2323	};
2324	}
2325	}
2326
2327	sub db_get($$) {
2328	my $key = "$_[0]/$_[1]";
2329
2330	cf::sync_job {
2331	BDB::db_get $DB, undef, $key, my $data;
2332
2333	$! ? ()
2334	: $data
2335	}
2336	}
2337
2338	sub db_put($$$) {
2339	BDB::dbreq_pri 4;
2340	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2341	}
2342
2343	=item cf::cache $id => [$paths...], $processversion => $process
2344
2345	Generic caching function that returns the value of the resource $id,
2346	caching and regenerating as required.
2347
2348	This function can block.
2349
2350	=cut
2351
2352	sub cache {
2353	my ($id, $src, $processversion, $process) = @_;
2354
2355	my $meta =
2356	join "\x00",
2357	$processversion,
2358	map {
2359	aio_stat $_
2360	and Carp::croak "$_: $!";
2361
2362	($_, (stat _)[7,9])
2363	} @$src;
2364
2365	my $dbmeta = db_get cache => "$id/meta";
2366	if ($dbmeta ne $meta) {
2367	# changed, we may need to process
2368
2369	my @data;
2370	my $md5;
2371
2372	for (0 .. $#$src) {
2373	0 <= aio_load $src->[$_], $data[$_]
2374	or Carp::croak "$src->[$_]: $!";
2375	}
2376
2377	# if processing is expensive, check
2378	# checksum first
2379	if (1) {
2380	$md5 =
2381	join "\x00",
2382	$processversion,
2383	map {
2384	Coro::cede;
2385	($src->[$_], Digest::MD5::md5_hex $data[$_])
2386	} 0.. $#$src;
2387
2388
2389	my $dbmd5 = db_get cache => "$id/md5";
2390	if ($dbmd5 eq $md5) {
2391	db_put cache => "$id/meta", $meta;
2392
2393	return db_get cache => "$id/data";
2394	}
2395	}
2396
2397	my $t1 = Time::HiRes::time;
2398	my $data = $process->(\@data);
2399	my $t2 = Time::HiRes::time;
2400
2401	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2402
2403	db_put cache => "$id/data", $data;
2404	db_put cache => "$id/md5" , $md5;
2405	db_put cache => "$id/meta", $meta;
2406
2407	return $data;
2408	}
2409
2410	db_get cache => "$id/data"
2411	}
2412
2413	=item fork_call { }, $args
2414
2415	Executes the given code block with the given arguments in a seperate
2416	process, returning the results. Everything must be serialisable with
2417	Coro::Storable. May, of course, block. Note that the executed sub may
2418	never block itself or use any form of Event handling.
2419
2420	=cut
2421
2422	sub fork_call(&@) {
2423	my ($cb, @args) = @_;
2424
2425	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2426	# or die "socketpair: $!";
2427	pipe my $fh1, my $fh2
2428	or die "pipe: $!";
2429
2430	if (my $pid = fork) {
2431	close $fh2;
2432
2433	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2434	$res = Coro::Storable::thaw $res;
2435
2436	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2437
2438	die $$res unless "ARRAY" eq ref $res;
2439
2440	return wantarray ? @$res : $res->[-1];
2441	} else {
2442	local $SIG{__WARN__};
2443	eval {
2444	local $SIG{__DIE__};
2445	close $fh1;
2446
2447	my @res = eval { $cb->(@args) };
2448	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2449	};
2450
2451	warn $@ if $@;
2452	_exit 0;
2453	}
2454	}
2455
2456
2457		3263
2458	#############################################################################	3264	#############################################################################
2459	# the server's init and main functions	3265	# the server's init and main functions
2460		3266
2461	sub load_facedata($) {	3267	sub load_facedata($) {
2462	my ($path) = @_;	3268	my ($path) = @_;
		3269
		3270	# HACK to clear player env face cache, we need some signal framework
		3271	# for this (global event?)
		3272	%ext::player_env::MUSIC_FACE_CACHE = ();
		3273
		3274	my $enc = JSON::XS->new->utf8->canonical->relaxed;
2463		3275
2464	warn "loading facedata from $path\n";	3276	warn "loading facedata from $path\n";
2465		3277
2466	my $facedata;	3278	my $facedata;
2467	0 < aio_load $path, $facedata	3279	0 < aio_load $path, $facedata
…		…
2470	$facedata = Coro::Storable::thaw $facedata;	3282	$facedata = Coro::Storable::thaw $facedata;
2471		3283
2472	$facedata->{version} == 2	3284	$facedata->{version} == 2
2473	or cf::cleanup "$path: version mismatch, cannot proceed.";	3285	or cf::cleanup "$path: version mismatch, cannot proceed.";
2474		3286
		3287	# patch in the exptable
		3288	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3289	$facedata->{resource}{"res/exp_table"} = {
		3290	type => FT_RSRC,
		3291	data => $exp_table,
		3292	hash => (Digest::MD5::md5 $exp_table),
		3293	};
		3294	cf::cede_to_tick;
		3295
2475	{	3296	{
2476	my $faces = $facedata->{faceinfo};	3297	my $faces = $facedata->{faceinfo};
2477		3298
2478	while (my ($face, $info) = each %$faces) {	3299	while (my ($face, $info) = each %$faces) {
2479	my $idx = (cf::face::find $face) || cf::face::alloc $face;	3300	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3301
2480	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	3302	cf::face::set_visibility $idx, $info->{visibility};
		3303	cf::face::set_magicmap $idx, $info->{magicmap};
2481	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	3304	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
2482	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	3305	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
2483	Coro::cede;	3306
		3307	cf::cede_to_tick;
2484	}	3308	}
2485		3309
2486	while (my ($face, $info) = each %$faces) {	3310	while (my ($face, $info) = each %$faces) {
2487	next unless $info->{smooth};	3311	next unless $info->{smooth};
		3312
2488	my $idx = cf::face::find $face	3313	my $idx = cf::face::find $face
2489	or next;	3314	or next;
		3315
2490	if (my $smooth = cf::face::find $info->{smooth}) {	3316	if (my $smooth = cf::face::find $info->{smooth}) {
		3317	cf::face::set_smooth $idx, $smooth;
2491	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	3318	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2492	} else {	3319	} else {
2493	warn "smooth face '$info->{smooth}' not found for face '$face'";	3320	warn "smooth face '$info->{smooth}' not found for face '$face'";
2494	}	3321	}
2495	Coro::cede;	3322
		3323	cf::cede_to_tick;
2496	}	3324	}
2497	}	3325	}
2498		3326
2499	{	3327	{
2500	my $anims = $facedata->{animinfo};	3328	my $anims = $facedata->{animinfo};
2501		3329
2502	while (my ($anim, $info) = each %$anims) {	3330	while (my ($anim, $info) = each %$anims) {
2503	cf::anim::set $anim, $info->{frames}, $info->{facings};	3331	cf::anim::set $anim, $info->{frames}, $info->{facings};
2504	Coro::cede;	3332	cf::cede_to_tick;
2505	}	3333	}
2506		3334
2507	cf::anim::invalidate_all; # d'oh	3335	cf::anim::invalidate_all; # d'oh
2508	}	3336	}
2509		3337
		3338	{
		3339	my $res = $facedata->{resource};
		3340
		3341	while (my ($name, $info) = each %$res) {
		3342	if (defined $info->{type}) {
		3343	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3344
		3345	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3346	cf::face::set_type $idx, $info->{type};
		3347	} else {
		3348	$RESOURCE{$name} = $info;
		3349	}
		3350
		3351	cf::cede_to_tick;
		3352	}
		3353	}
		3354
		3355	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3356
2510	1	3357	1
2511	}	3358	}
2512		3359
		3360	cf::global->attach (on_resource_update => sub {
		3361	if (my $soundconf = $RESOURCE{"res/sound.conf"}) {
		3362	$soundconf = JSON::XS->new->utf8->relaxed->decode ($soundconf->{data});
		3363
		3364	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3365	my $sound = $soundconf->{compat}[$_]
		3366	or next;
		3367
		3368	my $face = cf::face::find "sound/$sound->[1]";
		3369	cf::sound::set $sound->[0] => $face;
		3370	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3371	}
		3372
		3373	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3374	my $face = cf::face::find "sound/$v";
		3375	cf::sound::set $k => $face;
		3376	}
		3377	}
		3378	});
		3379
		3380	register_exticmd fx_want => sub {
		3381	my ($ns, $want) = @_;
		3382
		3383	while (my ($k, $v) = each %$want) {
		3384	$ns->fx_want ($k, $v);
		3385	}
		3386	};
		3387
		3388	sub load_resource_file($) {
		3389	my $guard = lock_acquire "load_resource_file";
		3390
		3391	my $status = load_resource_file_ $_[0];
		3392	get_slot 0.1, 100;
		3393	cf::arch::commit_load;
		3394
		3395	$status
		3396	}
		3397
2513	sub reload_regions {	3398	sub reload_regions {
		3399	# HACK to clear player env face cache, we need some signal framework
		3400	# for this (global event?)
		3401	%ext::player_env::MUSIC_FACE_CACHE = ();
		3402
2514	load_resource_file "$MAPDIR/regions"	3403	load_resource_file "$MAPDIR/regions"
2515	or die "unable to load regions file\n";	3404	or die "unable to load regions file\n";
		3405
		3406	for (cf::region::list) {
		3407	$_->{match} = qr/$_->{match}/
		3408	if exists $_->{match};
		3409	}
2516	}	3410	}
2517		3411
2518	sub reload_facedata {	3412	sub reload_facedata {
2519	load_facedata "$DATADIR/facedata"	3413	load_facedata "$DATADIR/facedata"
2520	or die "unable to load facedata\n";	3414	or die "unable to load facedata\n";
…		…
2531	}	3425	}
2532		3426
2533	sub reload_resources {	3427	sub reload_resources {
2534	warn "reloading resource files...\n";	3428	warn "reloading resource files...\n";
2535		3429
2536	reload_regions;
2537	reload_facedata;	3430	reload_facedata;
2538	reload_archetypes;	3431	reload_archetypes;
		3432	reload_regions;
2539	reload_treasures;	3433	reload_treasures;
2540		3434
2541	warn "finished reloading resource files\n";	3435	warn "finished reloading resource files\n";
2542	}	3436	}
2543		3437
2544	sub init {	3438	sub reload_config {
2545	reload_resources;	3439	warn "reloading config file...\n";
2546	}
2547		3440
2548	sub cfg_load {
2549	open my $fh, "<:utf8", "$CONFDIR/config"	3441	open my $fh, "<:utf8", "$CONFDIR/config"
2550	or return;	3442	or return;
2551		3443
2552	local $/;	3444	local $/;
2553	*CFG = YAML::Syck::Load <$fh>;	3445	*CFG = YAML::XS::Load scalar <$fh>;
2554		3446
2555	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];	3447	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
2556		3448
2557	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};	3449	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
2558	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};	3450	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
…		…
2562	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"	3454	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
2563	and die "WARNING: m(un)lockall failed: $!\n";	3455	and die "WARNING: m(un)lockall failed: $!\n";
2564	};	3456	};
2565	warn $@ if $@;	3457	warn $@ if $@;
2566	}	3458	}
		3459
		3460	warn "finished reloading resource files\n";
		3461	}
		3462
		3463	sub pidfile() {
		3464	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3465	or die "$PIDFILE: $!";
		3466	flock $fh, &Fcntl::LOCK_EX
		3467	or die "$PIDFILE: flock: $!";
		3468	$fh
		3469	}
		3470
		3471	# make sure only one server instance is running at any one time
		3472	sub atomic {
		3473	my $fh = pidfile;
		3474
		3475	my $pid = <$fh>;
		3476	kill 9, $pid if $pid > 0;
		3477
		3478	seek $fh, 0, 0;
		3479	print $fh $$;
		3480	}
		3481
		3482	sub main_loop {
		3483	warn "EV::loop starting\n";
		3484	if (1) {
		3485	EV::loop;
		3486	}
		3487	warn "EV::loop returned\n";
		3488	goto &main_loop unless $REALLY_UNLOOP;
2567	}	3489	}
2568		3490
2569	sub main {	3491	sub main {
		3492	cf::init_globals; # initialise logging
		3493
		3494	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3495	LOG llevInfo, "Copyright (C) 2005-2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3496	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3497	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3498
		3499	cf::init_experience;
		3500	cf::init_anim;
		3501	cf::init_attackmess;
		3502	cf::init_dynamic;
		3503
		3504	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3505
2570	# we must not ever block the main coroutine	3506	# we must not ever block the main coroutine
2571	local $Coro::idle = sub {	3507	local $Coro::idle = sub {
2572	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#	3508	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2573	(async {	3509	(async {
2574	Event::one_event;	3510	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3511	EV::loop EV::LOOP_ONESHOT;
2575	})->prio (Coro::PRIO_MAX);	3512	})->prio (Coro::PRIO_MAX);
2576	};	3513	};
2577		3514
2578	cfg_load;	3515	evthread_start IO::AIO::poll_fileno;
		3516
		3517	cf::sync_job {
		3518	cf::load_settings;
		3519	cf::load_materials;
		3520
		3521	reload_resources;
		3522	reload_config;
2579	db_init;	3523	db_init;
		3524
		3525	cf::init_uuid;
		3526	cf::init_signals;
		3527	cf::init_commands;
		3528	cf::init_skills;
		3529
		3530	cf::init_beforeplay;
		3531
		3532	atomic;
		3533
2580	load_extensions;	3534	load_extensions;
2581		3535
2582	$TICK_WATCHER->start;	3536	utime time, time, $RUNTIMEFILE;
2583	Event::loop;	3537
		3538	# no (long-running) fork's whatsoever before this point(!)
		3539	use POSIX ();
		3540	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3541
		3542	(pop @POST_INIT)->(0) while @POST_INIT;
		3543	};
		3544
		3545	main_loop;
2584	}	3546	}
2585		3547
2586	#############################################################################	3548	#############################################################################
2587	# initialisation and cleanup	3549	# initialisation and cleanup
2588		3550
2589	# install some emergency cleanup handlers	3551	# install some emergency cleanup handlers
2590	BEGIN {	3552	BEGIN {
		3553	our %SIGWATCHER = ();
2591	for my $signal (qw(INT HUP TERM)) {	3554	for my $signal (qw(INT HUP TERM)) {
2592	Event->signal (	3555	$SIGWATCHER{$signal} = EV::signal $signal, sub {
2593	reentrant => 0,
2594	data => WF_AUTOCANCEL,
2595	signal => $signal,
2596	prio => 0,
2597	cb => sub {
2598	cf::cleanup "SIG$signal";	3556	cf::cleanup "SIG$signal";
2599	},
2600	);	3557	};
		3558	}
		3559	}
		3560
		3561	sub write_runtime_sync {
		3562	# first touch the runtime file to show we are still running:
		3563	# the fsync below can take a very very long time.
		3564
		3565	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3566
		3567	my $guard = cf::lock_acquire "write_runtime";
		3568
		3569	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT, 0644
		3570	or return;
		3571
		3572	my $value = $cf::RUNTIME + 90 + 10;
		3573	# 10 is the runtime save interval, for a monotonic clock
		3574	# 60 allows for the watchdog to kill the server.
		3575
		3576	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3577	and return;
		3578
		3579	# always fsync - this file is important
		3580	aio_fsync $fh
		3581	and return;
		3582
		3583	# touch it again to show we are up-to-date
		3584	aio_utime $fh, undef, undef;
		3585
		3586	close $fh
		3587	or return;
		3588
		3589	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3590	and return;
		3591
		3592	warn "runtime file written.\n";
		3593
2601	}	3594	1
		3595	}
		3596
		3597	our $uuid_lock;
		3598	our $uuid_skip;
		3599
		3600	sub write_uuid_sync($) {
		3601	$uuid_skip ||= $_[0];
		3602
		3603	return if $uuid_lock;
		3604	local $uuid_lock = 1;
		3605
		3606	my $uuid = "$LOCALDIR/uuid";
		3607
		3608	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3609	or return;
		3610
		3611	my $value = uuid_seq uuid_cur;
		3612
		3613	unless ($value) {
		3614	warn "cowardly refusing to write zero uuid value!\n";
		3615	return;
		3616	}
		3617
		3618	my $value = uuid_str $value + $uuid_skip;
		3619	$uuid_skip = 0;
		3620
		3621	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3622	and return;
		3623
		3624	# always fsync - this file is important
		3625	aio_fsync $fh
		3626	and return;
		3627
		3628	close $fh
		3629	or return;
		3630
		3631	aio_rename "$uuid~", $uuid
		3632	and return;
		3633
		3634	warn "uuid file written ($value).\n";
		3635
		3636	1
		3637
		3638	}
		3639
		3640	sub write_uuid($$) {
		3641	my ($skip, $sync) = @_;
		3642
		3643	$sync ? write_uuid_sync $skip
		3644	: async { write_uuid_sync $skip };
2602	}	3645	}
2603		3646
2604	sub emergency_save() {	3647	sub emergency_save() {
2605	my $freeze_guard = cf::freeze_mainloop;	3648	my $freeze_guard = cf::freeze_mainloop;
2606		3649
2607	warn "enter emergency perl save\n";	3650	warn "emergency_perl_save: enter\n";
2608		3651
2609	cf::sync_job {	3652	cf::sync_job {
		3653	# this is a trade-off: we want to be very quick here, so
		3654	# save all maps without fsync, and later call a global sync
		3655	# (which in turn might be very very slow)
		3656	local $USE_FSYNC = 0;
		3657
2610	# use a peculiar iteration method to avoid tripping on perl	3658	# use a peculiar iteration method to avoid tripping on perl
2611	# refcount bugs in for. also avoids problems with players	3659	# refcount bugs in for. also avoids problems with players
2612	# and maps saved/destroyed asynchronously.	3660	# and maps saved/destroyed asynchronously.
2613	warn "begin emergency player save\n";	3661	warn "emergency_perl_save: begin player save\n";
2614	for my $login (keys %cf::PLAYER) {	3662	for my $login (keys %cf::PLAYER) {
2615	my $pl = $cf::PLAYER{$login} or next;	3663	my $pl = $cf::PLAYER{$login} or next;
2616	$pl->valid or next;	3664	$pl->valid or next;
		3665	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
2617	$pl->save;	3666	$pl->save;
2618	}	3667	}
2619	warn "end emergency player save\n";	3668	warn "emergency_perl_save: end player save\n";
2620		3669
2621	warn "begin emergency map save\n";	3670	warn "emergency_perl_save: begin map save\n";
2622	for my $path (keys %cf::MAP) {	3671	for my $path (keys %cf::MAP) {
2623	my $map = $cf::MAP{$path} or next;	3672	my $map = $cf::MAP{$path} or next;
2624	$map->valid or next;	3673	$map->valid or next;
2625	$map->save;	3674	$map->save;
2626	}	3675	}
2627	warn "end emergency map save\n";	3676	warn "emergency_perl_save: end map save\n";
2628		3677
2629	warn "begin emergency database checkpoint\n";	3678	warn "emergency_perl_save: begin database checkpoint\n";
2630	BDB::db_env_txn_checkpoint $DB_ENV;	3679	BDB::db_env_txn_checkpoint $DB_ENV;
2631	warn "end emergency database checkpoint\n";	3680	warn "emergency_perl_save: end database checkpoint\n";
		3681
		3682	warn "emergency_perl_save: begin write uuid\n";
		3683	write_uuid_sync 1;
		3684	warn "emergency_perl_save: end write uuid\n";
2632	};	3685	};
2633		3686
		3687	warn "emergency_perl_save: starting sync()\n";
		3688	IO::AIO::aio_sync sub {
		3689	warn "emergency_perl_save: finished sync()\n";
		3690	};
		3691
2634	warn "leave emergency perl save\n";	3692	warn "emergency_perl_save: leave\n";
2635	}	3693	}
2636		3694
2637	sub post_cleanup {	3695	sub post_cleanup {
2638	my ($make_core) = @_;	3696	my ($make_core) = @_;
2639		3697
2640	warn Carp::longmess "post_cleanup backtrace"	3698	warn Carp::longmess "post_cleanup backtrace"
2641	if $make_core;	3699	if $make_core;
		3700
		3701	my $fh = pidfile;
		3702	unlink $PIDFILE if <$fh> == $$;
		3703	}
		3704
		3705	# a safer delete_package, copied from Symbol
		3706	sub clear_package($) {
		3707	my $pkg = shift;
		3708
		3709	# expand to full symbol table name if needed
		3710	unless ($pkg =~ /^main::.*::$/) {
		3711	$pkg = "main$pkg" if $pkg =~ /^::/;
		3712	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3713	$pkg .= '::' unless $pkg =~ /::$/;
		3714	}
		3715
		3716	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3717	my $stem_symtab = *{$stem}{HASH};
		3718
		3719	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3720	or return;
		3721
		3722	# clear all symbols
		3723	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3724	for my $name (keys %$leaf_symtab) {
		3725	_gv_clear *{"$pkg$name"};
		3726	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3727	}
		3728	warn "cleared package $pkg\n";#d#
2642	}	3729	}
2643		3730
2644	sub do_reload_perl() {	3731	sub do_reload_perl() {
2645	# can/must only be called in main	3732	# can/must only be called in main
2646	if ($Coro::current != $Coro::main) {	3733	if ($Coro::current != $Coro::main) {
2647	warn "can only reload from main coroutine";	3734	warn "can only reload from main coroutine";
2648	return;	3735	return;
2649	}	3736	}
2650		3737
		3738	return if $RELOAD++;
		3739
		3740	my $t1 = EV::time;
		3741
		3742	while ($RELOAD) {
2651	warn "reloading...";	3743	warn "reloading...";
2652		3744
2653	warn "entering sync_job";	3745	warn "entering sync_job";
2654		3746
2655	cf::sync_job {	3747	cf::sync_job {
2656	cf::write_runtime; # external watchdog should not bark	3748	cf::write_runtime_sync; # external watchdog should not bark
2657	cf::emergency_save;	3749	cf::emergency_save;
2658	cf::write_runtime; # external watchdog should not bark	3750	cf::write_runtime_sync; # external watchdog should not bark
2659		3751
2660	warn "syncing database to disk";	3752	warn "syncing database to disk";
2661	BDB::db_env_txn_checkpoint $DB_ENV;	3753	BDB::db_env_txn_checkpoint $DB_ENV;
2662		3754
2663	# if anything goes wrong in here, we should simply crash as we already saved	3755	# if anything goes wrong in here, we should simply crash as we already saved
2664		3756
2665	warn "cancelling all WF_AUTOCANCEL watchers";
2666	for (Event::all_watchers) {
2667	$_->cancel if $_->data & WF_AUTOCANCEL;
2668	}
2669
2670	warn "flushing outstanding aio requests";	3757	warn "flushing outstanding aio requests";
2671	for (;;) {
2672	BDB::flush;
2673	IO::AIO::flush;
2674	Coro::cede;
2675	last unless IO::AIO::nreqs || BDB::nreqs;	3758	while (IO::AIO::nreqs || BDB::nreqs) {
2676	warn "iterate...";	3759	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
2677	}
2678
2679	++$RELOAD;
2680
2681	warn "cancelling all extension coros";
2682	$_->cancel for values %EXT_CORO;
2683	%EXT_CORO = ();
2684
2685	warn "removing commands";
2686	%COMMAND = ();
2687
2688	warn "removing ext commands";
2689	%EXTCMD = ();
2690
2691	warn "unloading/nuking all extensions";
2692	for my $pkg (@EXTS) {
2693	warn "... unloading $pkg";
2694
2695	if (my $cb = $pkg->can ("unload")) {
2696	eval {
2697	$cb->($pkg);
2698	1
2699	} or warn "$pkg unloaded, but with errors: $@";
2700	}	3760	}
2701		3761
2702	warn "... nuking $pkg";	3762	warn "cancelling all extension coros";
2703	Symbol::delete_package $pkg;	3763	$_->cancel for values %EXT_CORO;
2704	}	3764	%EXT_CORO = ();
2705		3765
2706	warn "unloading all perl modules loaded from $LIBDIR";	3766	warn "removing commands";
2707	while (my ($k, $v) = each %INC) {	3767	%COMMAND = ();
2708	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
2709		3768
		3769	warn "removing ext/exti commands";
		3770	%EXTCMD = ();
		3771	%EXTICMD = ();
		3772
		3773	warn "unloading/nuking all extensions";
		3774	for my $pkg (@EXTS) {
2710	warn "... unloading $k";	3775	warn "... unloading $pkg";
2711	delete $INC{$k};
2712		3776
2713	$k =~ s/\.pm$//;
2714	$k =~ s/\//::/g;
2715
2716	if (my $cb = $k->can ("unload_module")) {	3777	if (my $cb = $pkg->can ("unload")) {
		3778	eval {
2717	$cb->();	3779	$cb->($pkg);
		3780	1
		3781	} or warn "$pkg unloaded, but with errors: $@";
		3782	}
		3783
		3784	warn "... clearing $pkg";
		3785	clear_package $pkg;
2718	}	3786	}
2719		3787
2720	Symbol::delete_package $k;	3788	warn "unloading all perl modules loaded from $LIBDIR";
		3789	while (my ($k, $v) = each %INC) {
		3790	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3791
		3792	warn "... unloading $k";
		3793	delete $INC{$k};
		3794
		3795	$k =~ s/\.pm$//;
		3796	$k =~ s/\//::/g;
		3797
		3798	if (my $cb = $k->can ("unload_module")) {
		3799	$cb->();
		3800	}
		3801
		3802	clear_package $k;
2721	}	3803	}
2722		3804
2723	warn "getting rid of safe::, as good as possible";	3805	warn "getting rid of safe::, as good as possible";
2724	Symbol::delete_package "safe::$_"	3806	clear_package "safe::$_"
2725	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	3807	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2726		3808
2727	warn "unloading cf.pm \"a bit\"";	3809	warn "unloading cf.pm \"a bit\"";
2728	delete $INC{"cf.pm"};	3810	delete $INC{"cf.pm"};
2729	delete $INC{"cf/pod.pm"};	3811	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
2730		3812
2731	# don't, removes xs symbols, too,	3813	# don't, removes xs symbols, too,
2732	# and global variables created in xs	3814	# and global variables created in xs
2733	#Symbol::delete_package __PACKAGE__;	3815	#clear_package __PACKAGE__;
2734		3816
2735	warn "unload completed, starting to reload now";	3817	warn "unload completed, starting to reload now";
2736		3818
2737	warn "reloading cf.pm";	3819	warn "reloading cf.pm";
2738	require cf;	3820	require cf;
2739	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	3821	cf::_connect_to_perl_1;
2740		3822
2741	warn "loading config and database again";	3823	warn "loading config and database again";
2742	cf::cfg_load;	3824	cf::reload_config;
2743		3825
2744	warn "loading extensions";	3826	warn "loading extensions";
2745	cf::load_extensions;	3827	cf::load_extensions;
2746		3828
		3829	if ($REATTACH_ON_RELOAD) {
2747	warn "reattaching attachments to objects/players";	3830	warn "reattaching attachments to objects/players";
2748	_global_reattach; # objects, sockets	3831	_global_reattach; # objects, sockets
2749	warn "reattaching attachments to maps";	3832	warn "reattaching attachments to maps";
2750	reattach $_ for values %MAP;	3833	reattach $_ for values %MAP;
2751	warn "reattaching attachments to players";	3834	warn "reattaching attachments to players";
2752	reattach $_ for values %PLAYER;	3835	reattach $_ for values %PLAYER;
		3836	}
2753		3837
		3838	warn "running post_init jobs";
		3839	(pop @POST_INIT)->(1) while @POST_INIT;
		3840
2754	warn "leaving sync_job";	3841	warn "leaving sync_job";
2755		3842
2756	1	3843	1
2757	} or do {	3844	} or do {
2758	warn $@;	3845	warn $@;
2759	warn "error while reloading, exiting.";	3846	cf::cleanup "error while reloading, exiting.";
2760	exit 1;
2761	};	3847	};
2762		3848
2763	warn "reloaded";	3849	warn "reloaded";
		3850	--$RELOAD;
		3851	}
		3852
		3853	$t1 = EV::time - $t1;
		3854	warn "reload completed in ${t1}s\n";
2764	};	3855	};
2765		3856
2766	our $RELOAD_WATCHER; # used only during reload	3857	our $RELOAD_WATCHER; # used only during reload
2767		3858
2768	sub reload_perl() {	3859	sub reload_perl() {
2769	# doing reload synchronously and two reloads happen back-to-back,	3860	# doing reload synchronously and two reloads happen back-to-back,
2770	# coro crashes during coro_state_free->destroy here.	3861	# coro crashes during coro_state_free->destroy here.
2771		3862
2772	$RELOAD_WATCHER ||= Event->timer (	3863	$RELOAD_WATCHER ||= cf::async {
2773	reentrant => 0,	3864	Coro::AIO::aio_wait cache_extensions;
2774	after => 0,	3865
2775	data => WF_AUTOCANCEL,	3866	$RELOAD_WATCHER = EV::timer $TICK * 1.5, 0, sub {
2776	cb => sub {
2777	do_reload_perl;	3867	do_reload_perl;
2778	undef $RELOAD_WATCHER;	3868	undef $RELOAD_WATCHER;
2779	},	3869	};
2780	);	3870	};
2781	}	3871	}
2782		3872
2783	register_command "reload" => sub {	3873	register_command "reload" => sub {
2784	my ($who, $arg) = @_;	3874	my ($who, $arg) = @_;
2785		3875
2786	if ($who->flag (FLAG_WIZ)) {	3876	if ($who->flag (FLAG_WIZ)) {
2787	$who->message ("reloading server.");	3877	$who->message ("reloading server.");
		3878	async {
		3879	$Coro::current->{desc} = "perl_reload";
2788	async { reload_perl };	3880	reload_perl;
		3881	};
2789	}	3882	}
2790	};	3883	};
2791		3884
2792	unshift @INC, $LIBDIR;	3885	unshift @INC, $LIBDIR;
2793		3886
…		…
2795		3888
2796	our @WAIT_FOR_TICK;	3889	our @WAIT_FOR_TICK;
2797	our @WAIT_FOR_TICK_BEGIN;	3890	our @WAIT_FOR_TICK_BEGIN;
2798		3891
2799	sub wait_for_tick {	3892	sub wait_for_tick {
2800	return unless $TICK_WATCHER->is_active;
2801	return if $Coro::current == $Coro::main;	3893	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
2802		3894
2803	my $signal = new Coro::Signal;	3895	my $signal = new Coro::Signal;
2804	push @WAIT_FOR_TICK, $signal;	3896	push @WAIT_FOR_TICK, $signal;
2805	$signal->wait;	3897	$signal->wait;
2806	}	3898	}
2807		3899
2808	sub wait_for_tick_begin {	3900	sub wait_for_tick_begin {
2809	return unless $TICK_WATCHER->is_active;
2810	return if $Coro::current == $Coro::main;	3901	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
2811		3902
2812	my $signal = new Coro::Signal;	3903	my $signal = new Coro::Signal;
2813	push @WAIT_FOR_TICK_BEGIN, $signal;	3904	push @WAIT_FOR_TICK_BEGIN, $signal;
2814	$signal->wait;	3905	$signal->wait;
2815	}	3906	}
2816		3907
2817	$TICK_WATCHER = Event->timer (	3908	sub tick {
2818	reentrant => 0,
2819	parked => 1,
2820	prio => 0,
2821	at => $NEXT_TICK || $TICK,
2822	data => WF_AUTOCANCEL,
2823	cb => sub {
2824	if ($Coro::current != $Coro::main) {	3909	if ($Coro::current != $Coro::main) {
2825	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	3910	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2826	unless ++$bug_warning > 10;	3911	unless ++$bug_warning > 10;
2827	return;	3912	return;
2828	}	3913	}
2829		3914
2830	$NOW = Event::time;
2831
2832	cf::server_tick; # one server iteration	3915	cf::server_tick; # one server iteration
2833		3916
2834	$RUNTIME += $TICK;
2835	$NEXT_TICK += $TICK;
2836
2837	if ($NOW >= $NEXT_RUNTIME_WRITE) {	3917	if ($NOW >= $NEXT_RUNTIME_WRITE) {
2838	$NEXT_RUNTIME_WRITE = $NOW + 10;	3918	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
2839	Coro::async_pool {	3919	Coro::async_pool {
		3920	$Coro::current->{desc} = "runtime saver";
2840	write_runtime	3921	write_runtime_sync
2841	or warn "ERROR: unable to write runtime file: $!";	3922	or warn "ERROR: unable to write runtime file: $!";
2842	};
2843	}	3923	};
		3924	}
2844		3925
2845	# my $AFTER = Event::time;
2846	# warn $AFTER - $NOW;#d#
2847
2848	# if we are delayed by four ticks or more, skip them all
2849	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
2850
2851	$TICK_WATCHER->at ($NEXT_TICK);
2852	$TICK_WATCHER->start;
2853
2854	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	3926	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
2855	$sig->send;	3927	$sig->send;
2856	}	3928	}
2857	while (my $sig = shift @WAIT_FOR_TICK) {	3929	while (my $sig = shift @WAIT_FOR_TICK) {
2858	$sig->send;	3930	$sig->send;
2859	}
2860
2861	_post_tick;
2862	},	3931	}
2863	);	3932
		3933	$LOAD = ($NOW - $TICK_START) / $TICK;
		3934	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3935
		3936	if (0) {
		3937	if ($NEXT_TICK) {
		3938	my $jitter = $TICK_START - $NEXT_TICK;
		3939	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		3940	warn "jitter $JITTER\n";#d#
		3941	}
		3942	}
		3943	}
2864		3944
2865	{	3945	{
2866	BDB::max_poll_time $TICK * 0.1;	3946	# configure BDB
2867	$BDB_POLL_WATCHER = Event->io (	3947
2868	reentrant => 0,
2869	fd => BDB::poll_fileno,
2870	poll => 'r',
2871	prio => 0,
2872	data => WF_AUTOCANCEL,
2873	cb => \&BDB::poll_cb,
2874	);
2875	BDB::min_parallel 8;	3948	BDB::min_parallel 8;
2876		3949	BDB::max_poll_reqs $TICK * 0.1;
2877	BDB::set_sync_prepare {	3950	$AnyEvent::BDB::WATCHER->priority (1);
2878	my $status;
2879	my $current = $Coro::current;
2880	(
2881	sub {
2882	$status = $!;
2883	$current->ready; undef $current;
2884	},
2885	sub {
2886	Coro::schedule while defined $current;
2887	$! = $status;
2888	},
2889	)
2890	};
2891		3951
2892	unless ($DB_ENV) {	3952	unless ($DB_ENV) {
2893	$DB_ENV = BDB::db_env_create;	3953	$DB_ENV = BDB::db_env_create;
		3954	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		3955	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		3956	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		3957	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3958	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
2894		3959
2895	cf::sync_job {	3960	cf::sync_job {
2896	eval {	3961	eval {
2897	BDB::db_env_open	3962	BDB::db_env_open
2898	$DB_ENV,	3963	$DB_ENV,
…		…
2900	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN	3965	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
2901	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,	3966	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
2902	0666;	3967	0666;
2903		3968
2904	cf::cleanup "db_env_open($BDBDIR): $!" if $!;	3969	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
2905
2906	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
2907	$DB_ENV->set_lk_detect;
2908	};	3970	};
2909		3971
2910	cf::cleanup "db_env_open(db): $@" if $@;	3972	cf::cleanup "db_env_open(db): $@" if $@;
2911	};	3973	};
2912	}	3974	}
		3975
		3976	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		3977	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		3978	};
		3979	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		3980	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3981	};
		3982	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3983	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3984	};
2913	}	3985	}
2914		3986
2915	{	3987	{
		3988	# configure IO::AIO
		3989
2916	IO::AIO::min_parallel 8;	3990	IO::AIO::min_parallel 8;
2917
2918	undef $Coro::AIO::WATCHER;
2919	IO::AIO::max_poll_time $TICK * 0.1;	3991	IO::AIO::max_poll_time $TICK * 0.1;
2920	$AIO_POLL_WATCHER = Event->io (	3992	undef $AnyEvent::AIO::WATCHER;
2921	reentrant => 0,	3993	}
2922	data => WF_AUTOCANCEL,	3994
2923	fd => IO::AIO::poll_fileno,	3995	my $_log_backtrace;
2924	poll => 'r',	3996
2925	prio => 6,	3997	sub _log_backtrace {
2926	cb => \&IO::AIO::poll_cb,	3998	my ($msg, @addr) = @_;
2927	);	3999
		4000	$msg =~ s/\n//;
		4001
		4002	# limit the # of concurrent backtraces
		4003	if ($_log_backtrace < 2) {
		4004	++$_log_backtrace;
		4005	my $perl_bt = Carp::longmess $msg;
		4006	async {
		4007	$Coro::current->{desc} = "abt $msg";
		4008
		4009	my @bt = fork_call {
		4010	@addr = map { sprintf "%x", $_ } @addr;
		4011	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4012	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4013	or die "addr2line: $!";
		4014
		4015	my @funcs;
		4016	my @res = <$fh>;
		4017	chomp for @res;
		4018	while (@res) {
		4019	my ($func, $line) = splice @res, 0, 2, ();
		4020	push @funcs, "[$func] $line";
		4021	}
		4022
		4023	@funcs
		4024	};
		4025
		4026	LOG llevInfo, "[ABT] $perl_bt\n";
		4027	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4028	LOG llevInfo, "[ABT] $_\n" for @bt;
		4029	--$_log_backtrace;
		4030	};
		4031	} else {
		4032	LOG llevInfo, "[ABT] $msg\n";
		4033	LOG llevInfo, "[ABT] [suppressed]\n";
		4034	}
2928	}	4035	}
2929		4036
2930	# load additional modules	4037	# load additional modules
2931	use cf::pod;	4038	require "cf/$_.pm" for @EXTRA_MODULES;
		4039	cf::_connect_to_perl_2;
2932		4040
2933	END { cf::emergency_save }	4041	END { cf::emergency_save }
2934		4042
2935	1	4043	1
2936		4044

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