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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.108 by root, Sun Dec 31 21:02:05 2006 UTC vs.
Revision 1.602 by root, Sun Nov 11 18:21:21 2012 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
2		24
3	use utf8;	25	use common::sense;
4	use strict;
5		26
6	use Symbol;	27	use Symbol;
7	use List::Util;	28	use List::Util;
8	use Storable;	29	use Socket;
		30	use EV;
9	use Opcode;	31	use Opcode;
10	use Safe;	32	use Safe;
11	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
12		36
		37	use AnyEvent ();
		38	use AnyEvent::IO ();
		39	use AnyEvent::DNS ();
		40
13	use Coro 3.3;	41	use Coro ();
		42	use Coro::State;
		43	use Coro::Handle;
		44	use Coro::EV;
14	use Coro::Event;	45	use Coro::AnyEvent;
15	use Coro::Timer;	46	use Coro::Timer;
16	use Coro::Signal;	47	use Coro::Signal;
17	use Coro::Semaphore;	48	use Coro::Semaphore;
		49	use Coro::SemaphoreSet;
		50	use Coro::AnyEvent;
18	use Coro::AIO;	51	use Coro::AIO;
		52	use Coro::BDB 1.6;
		53	use Coro::Storable;
		54	use Coro::Util ();
19		55
20	use Digest::MD5;	56	use Guard ();
		57	use JSON::XS 2.01 ();
		58	use BDB ();
		59	use Data::Dumper;
21	use Fcntl;	60	use Fcntl;
22	use IO::AIO 2.31 ();
23	use YAML::Syck ();	61	use YAML::XS ();
24	use Time::HiRes;	62	use IO::AIO ();
		63	use Compress::LZF;
		64	use Digest::MD5 ();
25		65
26	use Event; $Event::Eval = 1; # no idea why this is required, but it is	66	AnyEvent::detect;
27		67
28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	68	# configure various modules to our taste
29	$YAML::Syck::ImplicitUnicode = 1;	69	#
		70	$Storable::canonical = 1; # reduce rsync transfers
		71	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
30		72
31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	73	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		74
		75	# make sure c-lzf reinitialises itself
		76	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		77	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		78
		79	# strictly for debugging
		80	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
32		81
33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	82	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		83
		84	our @ORIG_INC;
34		85
35	our %COMMAND = ();	86	our %COMMAND = ();
36	our %COMMAND_TIME = ();	87	our %COMMAND_TIME = ();
		88
		89	our @EXTS = (); # list of extension package names
37	our %EXTCMD = ();	90	our %EXTCMD = ();
		91	our %EXTACMD = ();
		92	our %EXTICMD = ();
		93	our %EXTIACMD = ();
		94	our %EXT_CORO = (); # coroutines bound to extensions
		95	our %EXT_MAP = (); # pluggable maps
38		96
		97	our $RELOAD; # number of reloads so far, non-zero while in reload
39	our @EVENT;	98	our @EVENT;
40	our $LIBDIR = datadir . "/ext";	99	our @REFLECT; # set by XS
		100	our %REFLECT; # set by us
41		101
42	our $TICK = MAX_TIME * 1e-6;	102	our $CONFDIR = confdir;
43	our $TICK_WATCHER;	103
		104	our $DATADIR = datadir;
		105	our $LIBDIR = "$DATADIR/ext";
		106	our $PODDIR = "$DATADIR/pod";
		107	our $MAPDIR = "$DATADIR/" . mapdir;
		108
		109	our $LOCALDIR = localdir;
		110	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		111	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		112	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		113	our $RANDOMDIR = "$LOCALDIR/random";
		114	our $BDBDIR = "$LOCALDIR/db";
		115	our $PIDFILE = "$LOCALDIR/pid";
		116	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		117
		118	#our %RESOURCE; # unused
		119
		120	our $OUTPUT_RATE_MIN = 3000;
		121	our $OUTPUT_RATE_MAX = 1000000;
		122
		123	our $MAX_LINKS = 32; # how many chained exits to follow
		124	our $VERBOSE_IO = 1;
		125
		126	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		127	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
44	our $NEXT_TICK;	128	our $NEXT_TICK;
		129	our $USE_FSYNC = 1; # use fsync to write maps - default on
		130
		131	our $BDB_DEADLOCK_WATCHER;
		132	our $BDB_CHECKPOINT_WATCHER;
		133	our $BDB_TRICKLE_WATCHER;
		134	our $DB_ENV;
		135
		136	our @EXTRA_MODULES = qw(pod match mapscript incloader);
		137
		138	our %CFG;
		139	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
		140
		141	our $UPTIME; $UPTIME ||= time;
		142	our $RUNTIME = 0;
		143	our $SERVER_TICK = 0;
45	our $NOW;	144	our $NOW;
46		145
47	our %CFG;	146	our (%PLAYER, %PLAYER_LOADING); # all users
		147	our (%MAP, %MAP_LOADING ); # all maps
		148	our $LINK_MAP; # the special {link} map, which is always available
48		149
49	our $UPTIME; $UPTIME ||= time;	150	# used to convert map paths into valid unix filenames by replacing / by ∕
50	our $RUNTIME;	151	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
51		152
52	our %MAP; # all maps	153	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
53	our $LINK_MAP; # the special {link} map	154	our $LOADAVG; # same thing, but with alpha-smoothing
54	our $FREEZE;	155	our $JITTER; # average jitter
55	our $RANDOM_MAPS = cf::localdir . "/random";	156	our $TICK_START; # for load detecting purposes
56	our %EXT_CORO;	157
		158	our @POST_INIT;
		159
		160	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		161	our $REALLY_UNLOOP; # never set to true, please :)
		162
		163	our $WAIT_FOR_TICK = new Coro::Signal;
		164	our @WAIT_FOR_TICK_BEGIN;
57		165
58	binmode STDOUT;	166	binmode STDOUT;
59	binmode STDERR;	167	binmode STDERR;
60		168
61	# read virtual server time, if available	169	# read virtual server time, if available
62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	170	unless ($RUNTIME || !-e $RUNTIMEFILE) {
63	open my $fh, "<", cf::localdir . "/runtime"	171	open my $fh, "<", $RUNTIMEFILE
64	or die "unable to read runtime file: $!";	172	or die "unable to read $RUNTIMEFILE file: $!";
65	$RUNTIME = <$fh> + 0.;	173	$RUNTIME = <$fh> + 0.;
66	}	174	}
67		175
68	mkdir cf::localdir;	176	eval "sub TICK() { $TICK } 1" or die;
69	mkdir cf::localdir . "/" . cf::playerdir;
70	mkdir cf::localdir . "/" . cf::tmpdir;
71	mkdir cf::localdir . "/" . cf::uniquedir;
72	mkdir $RANDOM_MAPS;
73		177
74	# a special map that is always available	178	mkdir $_
75	our $LINK_MAP;	179	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		180
		181	our $EMERGENCY_POSITION;
		182
		183	sub cf::map::normalise;
		184
		185	sub in_main() {
		186	$Coro::current == $Coro::main
		187	}
76		188
77	#############################################################################	189	#############################################################################
78		190
		191	%REFLECT = ();
		192	for (@REFLECT) {
		193	my $reflect = JSON::XS::decode_json $_;
		194	$REFLECT{$reflect->{class}} = $reflect;
		195	}
		196
		197	# this is decidedly evil
		198	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		199
		200	#############################################################################
		201
79	=head2 GLOBAL VARIABLES	202	=head2 GLOBAL VARIABLES
80		203
81	=over 4	204	=over 4
82		205
83	=item $cf::UPTIME	206	=item $cf::UPTIME
84		207
85	The timestamp of the server start (so not actually an uptime).	208	The timestamp of the server start (so not actually an "uptime").
		209
		210	=item $cf::SERVER_TICK
		211
		212	An unsigned integer that starts at zero when the server is started and is
		213	incremented on every tick.
		214
		215	=item $cf::NOW
		216
		217	The (real) time of the last (current) server tick - updated before and
		218	after tick processing, so this is useful only as a rough "what time is it
		219	now" estimate.
		220
		221	=item $cf::TICK
		222
		223	The interval between each server tick, in seconds.
86		224
87	=item $cf::RUNTIME	225	=item $cf::RUNTIME
88		226
89	The time this server has run, starts at 0 and is increased by $cf::TICK on	227	The time this server has run, starts at 0 and is increased by $cf::TICK on
90	every server tick.	228	every server tick.
91		229
92	=item $cf::LIBDIR	230	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		231	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		232	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
93		233
94	The perl library directory, where extensions and cf-specific modules can	234	Various directories - "/etc", read-only install directory, perl-library
95	be found. It will be added to C<@INC> automatically.	235	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		236	unique-items directory, player file directory, random maps directory and
		237	database environment.
96		238
		239	=item $cf::LOADAVG
		240
		241	The current CPU load on the server (alpha-smoothed), as a value between 0
		242	(none) and 1 (overloaded), indicating how much time is spent on processing
		243	objects per tick. Healthy values are < 0.5.
		244
97	=item $cf::NOW	245	=item $cf::LOAD
98		246
99	The time of the last (current) server tick.	247	The raw value load value from the last tick.
100
101	=item $cf::TICK
102
103	The interval between server ticks, in seconds.
104		248
105	=item %cf::CFG	249	=item %cf::CFG
106		250
107	Configuration for the server, loaded from C</etc/crossfire/config>, or	251	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
108	from wherever your confdir points to.	252	from wherever your confdir points to.
109		253
		254	=item cf::wait_for_tick, cf::wait_for_tick_begin
		255
		256	These are functions that inhibit the current coroutine one tick.
		257	cf::wait_for_tick_begin only returns directly I<after> the tick
		258	processing (and consequently, can only wake one thread per tick), while
		259	cf::wait_for_tick wakes up all waiters after tick processing.
		260
		261	Note that cf::wait_for_tick will immediately return when the server is not
		262	ticking, making it suitable for small pauses in threads that need to run
		263	when the server is paused. If that is not applicable (i.e. you I<really>
		264	want to wait, use C<$cf::WAIT_FOR_TICK>).
		265
		266	=item $cf::WAIT_FOR_TICK
		267
		268	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		269	variable contains a L<Coro::Signal> that is broadcats after every server
		270	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		271	next server tick.
		272
		273	=cut
		274
		275	sub wait_for_tick();
		276	sub wait_for_tick_begin();
		277
		278	=item @cf::INVOKE_RESULTS
		279
		280	This array contains the results of the last C<invoke ()> call. When
		281	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		282	that call.
		283
		284	=item %cf::REFLECT
		285
		286	Contains, for each (C++) class name, a hash reference with information
		287	about object members (methods, scalars, arrays and flags) and other
		288	metadata, which is useful for introspection.
		289
110	=back	290	=back
111		291
112	=cut	292	=cut
113		293
114	BEGIN {	294	sub error(@) { LOG llevError, join "", @_ }
115	*CORE::GLOBAL::warn = sub {	295	sub warn (@) { LOG llevWarn , join "", @_ }
		296	sub info (@) { LOG llevInfo , join "", @_ }
		297	sub debug(@) { LOG llevDebug, join "", @_ }
		298	sub trace(@) { LOG llevTrace, join "", @_ }
		299
		300	$Coro::State::WARNHOOK = sub {
116	my $msg = join "", @_;	301	my $msg = join "", @_;
117	utf8::encode $msg;
118		302
119	$msg .= "\n"	303	$msg .= "\n"
120	unless $msg =~ /\n$/;	304	unless $msg =~ /\n$/;
121		305
122	LOG llevError, "cfperl: $msg";	306	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
123	};	307
124	}	308	LOG llevWarn, $msg;
		309	};
		310
		311	$Coro::State::DIEHOOK = sub {
		312	return unless $^S eq 0; # "eq", not "=="
		313
		314	error Carp::longmess $_[0];
		315
		316	if (in_main) {#d#
		317	error "DIEHOOK called in main context, Coro bug?\n";#d#
		318	return;#d#
		319	}#d#
		320
		321	# kill coroutine otherwise
		322	Coro::terminate
		323	};
125		324
126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	325	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	326	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	327	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	328	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	329	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		330	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	331	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
132		332
133	# we bless all objects into (empty) derived classes to force a method lookup	333	# we bless all objects into (empty) derived classes to force a method lookup
134	# within the Safe compartment.	334	# within the Safe compartment.
135	for my $pkg (qw(	335	for my $pkg (qw(
136	cf::global cf::attachable	336	cf::global cf::attachable
137	cf::object cf::object::player	337	cf::object cf::object::player
138	cf::client cf::player	338	cf::client cf::player
139	cf::arch cf::living	339	cf::arch cf::living
		340	cf::map cf::mapspace
140	cf::map cf::party cf::region	341	cf::party cf::region
141	)) {	342	)) {
142	no strict 'refs';
143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	343	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
144	}	344	}
145		345
146	$Event::DIED = sub {	346	$EV::DIED = sub {
147	warn "error in event callback: @_";	347	warn "error in event callback: $@";
148	};	348	};
149		349
150	my %ext_pkg;	350	#############################################################################
151	my @exts;	351
152	my @hook;	352	sub fork_call(&@);
		353	sub get_slot($;$$);
		354
		355	#############################################################################
153		356
154	=head2 UTILITY FUNCTIONS	357	=head2 UTILITY FUNCTIONS
155		358
156	=over 4	359	=over 4
157		360
158	=cut	361	=item dumpval $ref
159		362
160	use JSON::Syck (); # TODO# replace by JSON::PC once working	363	=cut
161		364
		365	sub dumpval {
		366	eval {
		367	local $SIG{__DIE__};
		368	my $d;
		369	if (1) {
		370	$d = new Data::Dumper([$_[0]], ["*var"]);
		371	$d->Terse(1);
		372	$d->Indent(2);
		373	$d->Quotekeys(0);
		374	$d->Useqq(1);
		375	#$d->Bless(...);
		376	$d->Seen($_[1]) if @_ > 1;
		377	$d = $d->Dump();
		378	}
		379	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		380	$d
		381	} || "[unable to dump $_[0]: '$@']";
		382	}
		383
		384	=item $scalar = cf::load_file $path
		385
		386	Loads the given file from path and returns its contents. Croaks on error
		387	and can block.
		388
		389	=cut
		390
		391	sub load_file($) {
		392	0 <= aio_load $_[0], my $data
		393	or Carp::croak "$_[0]: $!";
		394
		395	$data
		396	}
		397
		398	=item $success = cf::replace_file $path, $data, $sync
		399
		400	Atomically replaces the file at the given $path with new $data, and
		401	optionally $sync the data to disk before replacing the file.
		402
		403	=cut
		404
		405	sub replace_file($$;$) {
		406	my ($path, $data, $sync) = @_;
		407
		408	my $lock = cf::lock_acquire ("replace_file:$path");
		409
		410	my $fh = aio_open "$path~", Fcntl::O_WRONLY | Fcntl::O_CREAT | Fcntl::O_TRUNC, 0644
		411	or return;
		412
		413	$data = $data->() if ref $data;
		414
		415	length $data == aio_write $fh, 0, (length $data), $data, 0
		416	or return;
		417
		418	!$sync
		419	or !aio_fsync $fh
		420	or return;
		421
		422	aio_close $fh
		423	and return;
		424
		425	aio_rename "$path~", $path
		426	and return;
		427
		428	if ($sync) {
		429	$path =~ s%/[^/]*$%%;
		430	aio_pathsync $path;
		431	}
		432
		433	1
		434	}
		435
162	=item $ref = cf::from_json $json	436	=item $ref = cf::decode_json $json
163		437
164	Converts a JSON string into the corresponding perl data structure.	438	Converts a JSON string into the corresponding perl data structure.
165		439
166	=cut
167
168	sub from_json($) {
169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
170	JSON::Syck::Load $_[0]
171	}
172
173	=item $json = cf::to_json $ref	440	=item $json = cf::encode_json $ref
174		441
175	Converts a perl data structure into its JSON representation.	442	Converts a perl data structure into its JSON representation.
176		443
177	=cut	444	=cut
178		445
179	sub to_json($) {	446	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	447
181	JSON::Syck::Dump $_[0]	448	sub encode_json($) { $json_coder->encode ($_[0]) }
		449	sub decode_json($) { $json_coder->decode ($_[0]) }
		450
		451	=item $ref = cf::decode_storable $scalar
		452
		453	Same as Coro::Storable::thaw, so blocks.
		454
		455	=cut
		456
		457	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		458
		459	=item $ref = cf::decode_yaml $scalar
		460
		461	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		462
		463	=cut
		464
		465	sub decode_yaml($) {
		466	fork_call { YAML::XS::Load $_[0] } @_
182	}	467	}
		468
		469	=item $scalar = cf::unlzf $scalar
		470
		471	Same as Compress::LZF::compress, but takes server ticks into account, so
		472	blocks.
		473
		474	=cut
		475
		476	sub unlzf($) {
		477	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		478	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		479	Compress::LZF::decompress $_[0]
		480	}
		481
		482	=item cf::post_init { BLOCK }
		483
		484	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		485	but I<before> the server starts ticking again.
		486
		487	The codeblock will have a single boolean argument to indicate whether this
		488	is a reload or not.
		489
		490	=cut
		491
		492	sub post_init(&) {
		493	push @POST_INIT, shift;
		494	}
		495
		496	sub _post_init {
		497	trace "running post_init jobs";
		498
		499	# run them in parallel...
		500
		501	my @join;
		502
		503	while () {
		504	push @join, map &Coro::async ($_, 0), @POST_INIT;
		505	@POST_INIT = ();
		506
		507	@join or last;
		508
		509	(pop @join)->join;
		510	}
		511	}
		512
		513	=item cf::lock_wait $string
		514
		515	Wait until the given lock is available. See cf::lock_acquire.
		516
		517	=item my $lock = cf::lock_acquire $string
		518
		519	Wait until the given lock is available and then acquires it and returns
		520	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		521	for example when the coroutine gets canceled), the lock is automatically
		522	returned.
		523
		524	Locks are *not* recursive, locking from the same coro twice results in a
		525	deadlocked coro.
		526
		527	Lock names should begin with a unique identifier (for example, cf::map::find
		528	uses map_find and cf::map::load uses map_load).
		529
		530	=item $locked = cf::lock_active $string
		531
		532	Return true if the lock is currently active, i.e. somebody has locked it.
		533
		534	=cut
		535
		536	our $LOCKS = new Coro::SemaphoreSet;
		537
		538	sub lock_wait($) {
		539	$LOCKS->wait ($_[0]);
		540	}
		541
		542	sub lock_acquire($) {
		543	$LOCKS->guard ($_[0])
		544	}
		545
		546	sub lock_active($) {
		547	$LOCKS->count ($_[0]) < 1
		548	}
		549
		550	sub freeze_mainloop {
		551	tick_inhibit_inc;
		552
		553	&Guard::guard (\&tick_inhibit_dec);
		554	}
		555
		556	=item cf::periodic $interval, $cb
		557
		558	Like EV::periodic, but randomly selects a starting point so that the actions
		559	get spread over time.
		560
		561	=cut
		562
		563	sub periodic($$) {
		564	my ($interval, $cb) = @_;
		565
		566	my $start = rand List::Util::min 180, $interval;
		567
		568	EV::periodic $start, $interval, 0, $cb
		569	}
		570
		571	=item cf::get_slot $time[, $priority[, $name]]
		572
		573	Allocate $time seconds of blocking CPU time at priority C<$priority>
		574	(default: 0): This call blocks and returns only when you have at least
		575	C<$time> seconds of cpu time till the next tick. The slot is only valid
		576	till the next cede.
		577
		578	Background jobs should use a priority les than zero, interactive jobs
		579	should use 100 or more.
		580
		581	The optional C<$name> can be used to identify the job to run. It might be
		582	used for statistical purposes and should identify the same time-class.
		583
		584	Useful for short background jobs.
		585
		586	=cut
		587
		588	our @SLOT_QUEUE;
		589	our $SLOT_QUEUE;
		590	our $SLOT_DECAY = 0.9;
		591
		592	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		593	$SLOT_QUEUE = Coro::async {
		594	$Coro::current->desc ("timeslot manager");
		595
		596	my $signal = new Coro::Signal;
		597	my $busy;
		598
		599	while () {
		600	next_job:
		601
		602	my $avail = cf::till_tick;
		603
		604	for (0 .. $#SLOT_QUEUE) {
		605	if ($SLOT_QUEUE[$_][0] <= $avail) {
		606	$busy = 0;
		607	my $job = splice @SLOT_QUEUE, $_, 1, ();
		608	$job->[2]->send;
		609	Coro::cede;
		610	goto next_job;
		611	} else {
		612	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		613	}
		614	}
		615
		616	if (@SLOT_QUEUE) {
		617	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		618	$WAIT_FOR_TICK->wait;
		619	} else {
		620	$busy = 0;
		621	Coro::schedule;
		622	}
		623	}
		624	};
		625
		626	sub get_slot($;$$) {
		627	return if tick_inhibit || $Coro::current == $Coro::main;
		628
		629	my ($time, $pri, $name) = @_;
		630
		631	$time = clamp $time, 0.01, $TICK * .6;
		632
		633	my $sig = new Coro::Signal;
		634
		635	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		636	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		637	$SLOT_QUEUE->ready;
		638	$sig->wait;
		639	}
		640
		641	=item cf::async { BLOCK }
		642
		643	Currently the same as Coro::async_pool, meaning you cannot use
		644	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		645	thing you are allowed to do is call C<prio> on it.
		646
		647	=cut
		648
		649	BEGIN { *async = \&Coro::async_pool }
183		650
184	=item cf::sync_job { BLOCK }	651	=item cf::sync_job { BLOCK }
185		652
186	The design of crossfire+ requires that the main coro ($Coro::main) is	653	The design of Deliantra requires that the main coroutine ($Coro::main)
187	always able to handle events or runnable, as crossfire+ is only partly	654	is always able to handle events or runnable, as Deliantra is only
188	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	655	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		656	acceptable.
189		657
190	If it must be done, put the blocking parts into C<sync_job>. This will run	658	If it must be done, put the blocking parts into C<sync_job>. This will run
191	the given BLOCK in another coroutine while waiting for the result. The	659	the given BLOCK in another coroutine while waiting for the result. The
192	server will be frozen during this time, so the block should either finish	660	server will be frozen during this time, so the block should either finish
193	fast or be very important.	661	fast or be very important.
…		…
195	=cut	663	=cut
196		664
197	sub sync_job(&) {	665	sub sync_job(&) {
198	my ($job) = @_;	666	my ($job) = @_;
199		667
		668	if (in_main) {
		669	my $time = AE::time;
		670
		671	# this is the main coro, too bad, we have to block
		672	# till the operation succeeds, freezing the server :/
		673
		674	#LOG llevError, Carp::longmess "sync job";#d#
		675
		676	my $freeze_guard = freeze_mainloop;
		677
200	my $busy = 1;	678	my $busy = 1;
201	my @res;	679	my @res;
202		680
203	# TODO: use suspend/resume instead	681	(async {
204	local $FREEZE = 1;	682	$Coro::current->desc ("sync job coro");
205
206	my $coro = Coro::async {
207	@res = eval { $job->() };	683	@res = eval { $job->() };
208	warn $@ if $@;	684	error $@ if $@;
209	undef $busy;	685	undef $busy;
210	};
211
212	if ($Coro::current == $Coro::main) {
213	$coro->prio (Coro::PRIO_MAX);	686	})->prio (Coro::PRIO_MAX);
		687
214	while ($busy) {	688	while ($busy) {
		689	if (Coro::nready) {
215	Coro::cede_notself;	690	Coro::cede_notself;
216	Event::one_event unless Coro::nready;	691	} else {
		692	EV::loop EV::LOOP_ONESHOT;
217	}	693	}
		694	}
		695
		696	my $time = AE::time - $time;
		697
		698	$TICK_START += $time; # do not account sync jobs to server load
		699
		700	wantarray ? @res : $res[0]
218	} else {	701	} else {
219	$coro->join;	702	# we are in another coroutine, how wonderful, everything just works
		703
		704	$job->()
220	}	705	}
221
222	wantarray ? @res : $res[0]
223	}	706	}
224		707
225	=item $coro = cf::coro { BLOCK }	708	=item $coro = cf::async_ext { BLOCK }
226		709
227	Creates and returns a new coro. This coro is automcatially being canceled	710	Like async, but this coro is automatically being canceled when the
228	when the extension calling this is being unloaded.	711	extension calling this is being unloaded.
229		712
230	=cut	713	=cut
231		714
232	sub coro(&) {	715	sub async_ext(&) {
233	my $cb = shift;	716	my $cb = shift;
234		717
235	my $coro; $coro = async {	718	my $coro = &Coro::async ($cb);
236	eval {
237	$cb->();
238	};
239	warn $@ if $@;
240	};
241		719
242	$coro->on_destroy (sub {	720	$coro->on_destroy (sub {
243	delete $EXT_CORO{$coro+0};	721	delete $EXT_CORO{$coro+0};
244	});	722	});
245	$EXT_CORO{$coro+0} = $coro;	723	$EXT_CORO{$coro+0} = $coro;
246		724
247	$coro	725	$coro
248	}	726	}
249		727
250	sub write_runtime {	728	=item fork_call { }, @args
251	my $runtime = cf::localdir . "/runtime";
252		729
253	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	730	Executes the given code block with the given arguments in a seperate
254	or return;	731	process, returning the results. Everything must be serialisable with
		732	Coro::Storable. May, of course, block. Note that the executed sub may
		733	never block itself or use any form of event handling.
255		734
256	my $value = $cf::RUNTIME;	735	=cut
257	(aio_write $fh, 0, (length $value), $value, 0) <= 0
258	and return;
259		736
260	aio_fsync $fh	737	sub post_fork {
261	and return;	738	reset_signals;
		739	}
262		740
263	close $fh	741	sub fork_call(&@) {
264	or return;	742	my ($cb, @args) = @_;
265		743
266	aio_rename "$runtime~", $runtime	744	# we seemingly have to make a local copy of the whole thing,
267	and return;	745	# otherwise perl prematurely frees the stuff :/
		746	# TODO: investigate and fix (likely this will be rather laborious)
268		747
		748	my @res = Coro::Util::fork_eval {
		749	cf::post_fork;
		750	&$cb
		751	} @args;
		752
		753	wantarray ? @res : $res[-1]
		754	}
		755
		756	sub objinfo {
269	1	757	(
		758	"counter value" => cf::object::object_count,
		759	"objects created" => cf::object::create_count,
		760	"objects destroyed" => cf::object::destroy_count,
		761	"freelist size" => cf::object::free_count,
		762	"allocated objects" => cf::object::objects_size,
		763	"active objects" => cf::object::actives_size,
		764	)
		765	}
		766
		767	=item $coin = coin_from_name $name
		768
		769	=cut
		770
		771	our %coin_alias = (
		772	"silver" => "silvercoin",
		773	"silvercoin" => "silvercoin",
		774	"silvercoins" => "silvercoin",
		775	"gold" => "goldcoin",
		776	"goldcoin" => "goldcoin",
		777	"goldcoins" => "goldcoin",
		778	"platinum" => "platinacoin",
		779	"platinumcoin" => "platinacoin",
		780	"platinumcoins" => "platinacoin",
		781	"platina" => "platinacoin",
		782	"platinacoin" => "platinacoin",
		783	"platinacoins" => "platinacoin",
		784	"royalty" => "royalty",
		785	"royalties" => "royalty",
		786	);
		787
		788	sub coin_from_name($) {
		789	$coin_alias{$_[0]}
		790	? cf::arch::find $coin_alias{$_[0]}
		791	: undef
		792	}
		793
		794	=item $value = cf::db_get $family => $key
		795
		796	Returns a single value from the environment database.
		797
		798	=item cf::db_put $family => $key => $value
		799
		800	Stores the given C<$value> in the family. It can currently store binary
		801	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		802
		803	=item $db = cf::db_table "name"
		804
		805	Create and/or open a new database table. The string must not be "db" and must be unique
		806	within each server.
		807
		808	=cut
		809
		810	sub db_table($) {
		811	cf::error "db_get called from main context"
		812	if $Coro::current == $Coro::main;
		813
		814	my ($name) = @_;
		815	my $db = BDB::db_create $DB_ENV;
		816
		817	eval {
		818	$db->set_flags (BDB::CHKSUM);
		819
		820	utf8::encode $name;
		821	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		822	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		823	cf::cleanup "db_open(db): $!" if $!;
		824	};
		825	cf::cleanup "db_open(db): $@" if $@;
		826
		827	$db
		828	}
		829
		830	our $DB;
		831
		832	sub db_init {
		833	$DB ||= db_table "db";
		834	}
		835
		836	sub db_get($$) {
		837	my $key = "$_[0]/$_[1]";
		838
		839	cf::error "db_get called from main context"
		840	if $Coro::current == $Coro::main;
		841
		842	BDB::db_get $DB, undef, $key, my $data;
		843
		844	$! ? ()
		845	: $data
		846	}
		847
		848	sub db_put($$$) {
		849	BDB::dbreq_pri 4;
		850	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		851	}
		852
		853	=item cf::cache $id => [$paths...], $processversion => $process
		854
		855	Generic caching function that returns the value of the resource $id,
		856	caching and regenerating as required.
		857
		858	This function can block.
		859
		860	=cut
		861
		862	sub cache {
		863	my ($id, $src, $processversion, $process) = @_;
		864
		865	my $meta =
		866	join "\x00",
		867	$processversion,
		868	map {
		869	aio_stat $_
		870	and Carp::croak "$_: $!";
		871
		872	($_, (stat _)[7,9])
		873	} @$src;
		874
		875	my $dbmeta = db_get cache => "$id/meta";
		876	if ($dbmeta ne $meta) {
		877	# changed, we may need to process
		878
		879	my @data;
		880	my $md5;
		881
		882	for (0 .. $#$src) {
		883	$data[$_] = load_file $src->[$_];
		884	}
		885
		886	# if processing is expensive, check
		887	# checksum first
		888	if (1) {
		889	$md5 =
		890	join "\x00",
		891	$processversion,
		892	map {
		893	cf::cede_to_tick;
		894	($src->[$_], Digest::MD5::md5_hex $data[$_])
		895	} 0.. $#$src;
		896
		897
		898	my $dbmd5 = db_get cache => "$id/md5";
		899	if ($dbmd5 eq $md5) {
		900	db_put cache => "$id/meta", $meta;
		901
		902	return db_get cache => "$id/data";
		903	}
		904	}
		905
		906	my $t1 = EV::time;
		907	my $data = $process->(\@data);
		908	my $t2 = EV::time;
		909
		910	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		911
		912	db_put cache => "$id/data", $data;
		913	db_put cache => "$id/md5" , $md5;
		914	db_put cache => "$id/meta", $meta;
		915
		916	return $data;
		917	}
		918
		919	db_get cache => "$id/data"
		920	}
		921
		922	=item cf::datalog type => key => value, ...
		923
		924	Log a datalog packet of the given type with the given key-value pairs.
		925
		926	=cut
		927
		928	sub datalog($@) {
		929	my ($type, %kv) = @_;
		930	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
270	}	931	}
271		932
272	=back	933	=back
273		934
274	=cut	935	=cut
275		936
276	#############################################################################	937	#############################################################################
277		938
278	package cf::path;
279
280	sub new {
281	my ($class, $path, $base) = @_;
282
283	my $self = bless { }, $class;
284
285	if ($path =~ s{^\?random/}{}) {
286	$self->{random} = cf::from_json $path;
287	} else {
288	if ($path =~ s{^~([^/]+)?}{}) {
289	$self->{user_rel} = 1;
290
291	if (defined $1) {
292	$self->{user} = $1;
293	} elsif ($base =~ m{^~([^/]+)/}) {
294	$self->{user} = $1;
295	} else {
296	warn "cannot resolve user-relative path without user <$path,$base>\n";
297	}
298	} elsif ($path =~ /^\//) {
299	# already absolute
300	} else {
301	$base =~ s{[^/]+/?$}{};
302	return $class->new ("$base/$path");
303	}
304
305	for ($path) {
306	redo if s{/\.?/}{/};
307	redo if s{/[^/]+/\.\./}{/};
308	}
309	}
310
311	$self->{path} = $path;
312
313	$self
314	}
315
316	# the name / primary key / in-game path
317	sub as_string {
318	my ($self) = @_;
319
320	$self->{user_rel} ? "~$self->{user}$self->{path}"
321	: $self->{random} ? "?random/$self->{path}"
322	: $self->{path}
323	}
324
325	# the displayed name, this is a one way mapping
326	sub visible_name {
327	my ($self) = @_;
328
329	$self->{random} ? "?random/$self->{random}{origin_map}+$self->{random}{origin_x}+$self->{random}{origin_y}/$self->{random}{dungeon_level}"
330	: $self->as_string
331	}
332
333	# escape the /'s in the path
334	sub _escaped_path {
335	# ∕ is U+2215
336	(my $path = $_[0]{path}) =~ s/\//∕/g;
337	$path
338	}
339
340	# the original (read-only) location
341	sub load_path {
342	my ($self) = @_;
343
344	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
345	}
346
347	# the temporary/swap location
348	sub save_path {
349	my ($self) = @_;
350
351	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
352	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, Digest::MD5::md5_hex $self->{path}
353	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
354	}
355
356	# the unique path, might be eq to save_path
357	sub uniq_path {
358	my ($self) = @_;
359
360	$self->{user_rel} || $self->{random}
361	? undef
362	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
363	}
364
365	# return random map parameters, or undef
366	sub random_map_params {
367	my ($self) = @_;
368
369	$self->{random}
370	}
371
372	# this is somewhat ugly, but style maps do need special treatment
373	sub is_style_map {
374	$_[0]{path} =~ m{^/styles/}
375	}
376
377	package cf;
378
379	#############################################################################
380
381	=head2 ATTACHABLE OBJECTS	939	=head2 ATTACHABLE OBJECTS
382		940
383	Many objects in crossfire are so-called attachable objects. That means you can	941	Many objects in deliantra are so-called attachable objects. That means you can
384	attach callbacks/event handlers (a collection of which is called an "attachment")	942	attach callbacks/event handlers (a collection of which is called an "attachment")
385	to it. All such attachable objects support the following methods.	943	to it. All such attachable objects support the following methods.
386		944
387	In the following description, CLASS can be any of C<global>, C<object>	945	In the following description, CLASS can be any of C<global>, C<object>
388	C<player>, C<client> or C<map> (i.e. the attachable objects in	946	C<player>, C<client> or C<map> (i.e. the attachable objects in
389	crossfire+).	947	Deliantra).
390		948
391	=over 4	949	=over 4
392		950
393	=item $attachable->attach ($attachment, key => $value...)	951	=item $attachable->attach ($attachment, key => $value...)
394		952
…		…
438	=item cf::CLASS::attachment $name, ...	996	=item cf::CLASS::attachment $name, ...
439		997
440	Register an attachment by C<$name> through which attachable objects of the	998	Register an attachment by C<$name> through which attachable objects of the
441	given CLASS can refer to this attachment.	999	given CLASS can refer to this attachment.
442		1000
443	Some classes such as crossfire maps and objects can specify attachments	1001	Some classes such as deliantra maps and objects can specify attachments
444	that are attached at load/instantiate time, thus the need for a name.	1002	that are attached at load/instantiate time, thus the need for a name.
445		1003
446	These calls expect any number of the following handler/hook descriptions:	1004	These calls expect any number of the following handler/hook descriptions:
447		1005
448	=over 4	1006	=over 4
…		…
508	our @CB_TYPE = (); # registry for type (cf-object class) based events	1066	our @CB_TYPE = (); # registry for type (cf-object class) based events
509	our @CB_MAP = ();	1067	our @CB_MAP = ();
510		1068
511	my %attachment;	1069	my %attachment;
512		1070
		1071	sub cf::attachable::thawer_merge {
		1072	# simply override everything except _meta
		1073	local $_[0]{_meta};
		1074	%{$_[0]} = %{$_[1]};
		1075	}
		1076
513	sub _attach_cb($$$$) {	1077	sub _attach_cb($$$$) {
514	my ($registry, $event, $prio, $cb) = @_;	1078	my ($registry, $event, $prio, $cb) = @_;
515		1079
516	use sort 'stable';	1080	use sort 'stable';
517		1081
…		…
551	$registry = $CB_TYPE[$object_type] ||= [];	1115	$registry = $CB_TYPE[$object_type] ||= [];
552		1116
553	} elsif ($type eq "subtype") {	1117	} elsif ($type eq "subtype") {
554	defined $object_type or Carp::croak "subtype specified without type";	1118	defined $object_type or Carp::croak "subtype specified without type";
555	my $object_subtype = shift @arg;	1119	my $object_subtype = shift @arg;
556	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	1120	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
557		1121
558	} elsif ($type eq "package") {	1122	} elsif ($type eq "package") {
559	my $pkg = shift @arg;	1123	my $pkg = shift @arg;
560		1124
561	while (my ($name, $id) = each %cb_id) {	1125	while (my ($name, $id) = each %cb_id) {
…		…
566		1130
567	} elsif (exists $cb_id{$type}) {	1131	} elsif (exists $cb_id{$type}) {
568	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;	1132	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
569		1133
570	} elsif (ref $type) {	1134	} elsif (ref $type) {
571	warn "attaching objects not supported, ignoring.\n";	1135	error "attaching objects not supported, ignoring.\n";
572		1136
573	} else {	1137	} else {
574	shift @arg;	1138	shift @arg;
575	warn "attach argument '$type' not supported, ignoring.\n";	1139	error "attach argument '$type' not supported, ignoring.\n";
576	}	1140	}
577	}	1141	}
578	}	1142	}
579		1143
580	sub _object_attach {	1144	sub _object_attach {
…		…
590	_attach $registry, $klass, @attach;	1154	_attach $registry, $klass, @attach;
591	}	1155	}
592		1156
593	$obj->{$name} = \%arg;	1157	$obj->{$name} = \%arg;
594	} else {	1158	} else {
595	warn "object uses attachment '$name' that is not available, postponing.\n";	1159	info "object uses attachment '$name' which is not available, postponing.\n";
596	}	1160	}
597		1161
598	$obj->{_attachment}{$name} = undef;	1162	$obj->{_attachment}{$name} = undef;
599	}	1163	}
600		1164
…		…
602	if (ref $_[0]) {	1166	if (ref $_[0]) {
603	_object_attach @_;	1167	_object_attach @_;
604	} else {	1168	} else {
605	_attach shift->_attach_registry, @_;	1169	_attach shift->_attach_registry, @_;
606	}	1170	}
		1171	_recalc_want;
607	};	1172	};
608		1173
609	# all those should be optimised	1174	# all those should be optimised
610	sub cf::attachable::detach {	1175	sub cf::attachable::detach {
611	my ($obj, $name) = @_;	1176	my ($obj, $name) = @_;
…		…
614	delete $obj->{_attachment}{$name};	1179	delete $obj->{_attachment}{$name};
615	reattach ($obj);	1180	reattach ($obj);
616	} else {	1181	} else {
617	Carp::croak "cannot, currently, detach class attachments";	1182	Carp::croak "cannot, currently, detach class attachments";
618	}	1183	}
		1184	_recalc_want;
619	};	1185	};
620		1186
621	sub cf::attachable::attached {	1187	sub cf::attachable::attached {
622	my ($obj, $name) = @_;	1188	my ($obj, $name) = @_;
623		1189
…		…
638	";	1204	";
639	die if $@;	1205	die if $@;
640	}	1206	}
641		1207
642	our $override;	1208	our $override;
643	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1209	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
644		1210
645	sub override {	1211	sub override {
646	$override = 1;	1212	$override = 1;
647	@invoke_results = ();	1213	@INVOKE_RESULTS = (@_);
648	}	1214	}
649		1215
650	sub do_invoke {	1216	sub do_invoke {
651	my $event = shift;	1217	my $event = shift;
652	my $callbacks = shift;	1218	my $callbacks = shift;
653		1219
654	@invoke_results = ();	1220	@INVOKE_RESULTS = ();
655		1221
656	local $override;	1222	local $override;
657		1223
658	for (@$callbacks) {	1224	for (@$callbacks) {
659	eval { &{$_->[1]} };	1225	eval { &{$_->[1]} };
660		1226
661	if ($@) {	1227	if ($@) {
662	warn "$@";
663	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";	1228	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
664	override;	1229	override;
665	}	1230	}
666		1231
667	return 1 if $override;	1232	return 1 if $override;
668	}	1233	}
669		1234
670	0	1235	0
671	}	1236	}
672		1237
673	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)	1238	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
674		1239
675	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)	1240	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
676		1241
677	Generate an object-specific event with the given arguments.	1242	Generate an object-specific event with the given arguments.
678		1243
679	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	1244	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
680	removed in future versions), and there is no public API to access override	1245	removed in future versions), and there is no public API to access override
681	results (if you must, access C<@cf::invoke_results> directly).	1246	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
682		1247
683	=back	1248	=back
684		1249
685	=cut	1250	=cut
686		1251
687	#############################################################################	1252	#############################################################################
688	# object support	1253	# object support
		1254
		1255	sub _object_equal($$);
		1256	sub _object_equal($$) {
		1257	my ($a, $b) = @_;
		1258
		1259	return 0 unless (ref $a) eq (ref $b);
		1260
		1261	if ("HASH" eq ref $a) {
		1262	my @ka = keys %$a;
		1263	my @kb = keys %$b;
		1264
		1265	return 0 if @ka != @kb;
		1266
		1267	for (0 .. $#ka) {
		1268	return 0 unless $ka[$_] eq $kb[$_];
		1269	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1270	}
		1271
		1272	} elsif ("ARRAY" eq ref $a) {
		1273
		1274	return 0 if @$a != @$b;
		1275
		1276	for (0 .. $#$a) {
		1277	return 0 unless _object_equal $a->[$_], $b->[$_];
		1278	}
		1279
		1280	} elsif ($a ne $b) {
		1281	return 0;
		1282	}
		1283
		1284	1
		1285	}
		1286
		1287	our $SLOW_MERGES;#d#
		1288	sub _can_merge {
		1289	my ($ob1, $ob2) = @_;
		1290
		1291	++$SLOW_MERGES;#d#
		1292
		1293	# we do the slow way here
		1294	return _object_equal $ob1, $ob2
		1295	}
689		1296
690	sub reattach {	1297	sub reattach {
691	# basically do the same as instantiate, without calling instantiate	1298	# basically do the same as instantiate, without calling instantiate
692	my ($obj) = @_;	1299	my ($obj) = @_;
		1300
		1301	# no longer needed after getting rid of delete_package?
		1302	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
693		1303
694	my $registry = $obj->registry;	1304	my $registry = $obj->registry;
695		1305
696	@$registry = ();	1306	@$registry = ();
697		1307
…		…
702	for (@$attach) {	1312	for (@$attach) {
703	my ($klass, @attach) = @$_;	1313	my ($klass, @attach) = @$_;
704	_attach $registry, $klass, @attach;	1314	_attach $registry, $klass, @attach;
705	}	1315	}
706	} else {	1316	} else {
707	warn "object uses attachment '$name' that is not available, postponing.\n";	1317	info "object uses attachment '$name' that is not available, postponing.\n";
708	}	1318	}
709	}	1319	}
710	}	1320	}
711		1321
712	cf::attachable->attach (	1322	cf::attachable->attach (
713	prio => -1000000,	1323	prio => -1000000,
714	on_instantiate => sub {	1324	on_instantiate => sub {
715	my ($obj, $data) = @_;	1325	my ($obj, $data) = @_;
716		1326
717	$data = from_json $data;	1327	$data = decode_json $data;
718		1328
719	for (@$data) {	1329	for (@$data) {
720	my ($name, $args) = @$_;	1330	my ($name, $args) = @$_;
721		1331
722	$obj->attach ($name, %{$args || {} });	1332	$obj->attach ($name, %{$args || {} });
…		…
738	sub object_freezer_save {	1348	sub object_freezer_save {
739	my ($filename, $rdata, $objs) = @_;	1349	my ($filename, $rdata, $objs) = @_;
740		1350
741	sync_job {	1351	sync_job {
742	if (length $$rdata) {	1352	if (length $$rdata) {
		1353	utf8::decode (my $decname = $filename);
743	warn sprintf "saving %s (%d,%d)\n",	1354	trace sprintf "saving %s (%d,%d)\n",
744	$filename, length $$rdata, scalar @$objs;	1355	$decname, length $$rdata, scalar @$objs
		1356	if $VERBOSE_IO;
745		1357
746	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	1358	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
747	chmod SAVE_MODE, $fh;	1359	aio_chmod $fh, SAVE_MODE;
748	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	1360	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1361	if ($cf::USE_FSYNC) {
		1362	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
749	aio_fsync $fh;	1363	aio_fsync $fh;
		1364	}
750	close $fh;	1365	aio_close $fh;
751		1366
752	if (@$objs) {	1367	if (@$objs) {
753	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	1368	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
754	chmod SAVE_MODE, $fh;	1369	aio_chmod $fh, SAVE_MODE;
755	my $data = Storable::nfreeze { version => 1, objs => $objs };	1370	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
756	aio_write $fh, 0, (length $data), $data, 0;	1371	aio_write $fh, 0, (length $data), $data, 0;
		1372	if ($cf::USE_FSYNC) {
		1373	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
757	aio_fsync $fh;	1374	aio_fsync $fh;
		1375	}
758	close $fh;	1376	aio_close $fh;
759	aio_rename "$filename.pst~", "$filename.pst";	1377	aio_rename "$filename.pst~", "$filename.pst";
760	}	1378	}
761	} else {	1379	} else {
762	aio_unlink "$filename.pst";	1380	aio_unlink "$filename.pst";
763	}	1381	}
764		1382
765	aio_rename "$filename~", $filename;	1383	aio_rename "$filename~", $filename;
		1384
		1385	$filename =~ s%/[^/]+$%%;
		1386	aio_pathsync $filename if $cf::USE_FSYNC;
766	} else {	1387	} else {
767	warn "FATAL: $filename~: $!\n";	1388	error "unable to save objects: $filename~: $!\n";
768	}	1389	}
769	} else {	1390	} else {
770	aio_unlink $filename;	1391	aio_unlink $filename;
771	aio_unlink "$filename.pst";	1392	aio_unlink "$filename.pst";
772	}	1393	}
773	}	1394	};
774	}	1395	}
775		1396
776	sub object_freezer_as_string {	1397	sub object_freezer_as_string {
777	my ($rdata, $objs) = @_;	1398	my ($rdata, $objs) = @_;
778		1399
…		…
790	or return;	1411	or return;
791		1412
792	unless (aio_stat "$filename.pst") {	1413	unless (aio_stat "$filename.pst") {
793	(aio_load "$filename.pst", $av) >= 0	1414	(aio_load "$filename.pst", $av) >= 0
794	or return;	1415	or return;
		1416
795	$av = eval { (Storable::thaw <$av>)->{objs} };	1417	my $st = eval { Coro::Storable::thaw $av };
		1418	$av = $st->{objs};
796	}	1419	}
797		1420
		1421	utf8::decode (my $decname = $filename);
		1422	trace sprintf "loading %s (%d,%d)\n",
		1423	$decname, length $data, scalar @{$av || []}
		1424	if $VERBOSE_IO;
		1425
798	return ($data, $av);	1426	($data, $av)
799	}	1427	}
		1428
		1429	=head2 COMMAND CALLBACKS
		1430
		1431	=over 4
		1432
		1433	=cut
800		1434
801	#############################################################################	1435	#############################################################################
802	# command handling &c	1436	# command handling &c
803		1437
804	=item cf::register_command $name => \&callback($ob,$args);	1438	=item cf::register_command $name => \&callback($ob,$args)
805		1439
806	Register a callback for execution when the client sends the user command	1440	Register a callback for execution when the client sends the user command
807	$name.	1441	$name.
808		1442
809	=cut	1443	=cut
…		…
815	#warn "registering command '$name/$time' to '$caller'";	1449	#warn "registering command '$name/$time' to '$caller'";
816		1450
817	push @{ $COMMAND{$name} }, [$caller, $cb];	1451	push @{ $COMMAND{$name} }, [$caller, $cb];
818	}	1452	}
819		1453
820	=item cf::register_extcmd $name => \&callback($pl,$packet);	1454	=item cf::register_extcmd $name => \&callback($pl,@args)
821		1455
822	Register a callbackf ro execution when the client sends an extcmd packet.	1456	Register a callback for execution when the client sends an (synchronous)
		1457	extcmd packet. Ext commands will be processed in the order they are
		1458	received by the server, like other user commands. The first argument is
		1459	the logged-in player. Ext commands can only be processed after a player
		1460	has logged in successfully.
823		1461
824	If the callback returns something, it is sent back as if reply was being	1462	The values will be sent back to the client.
825	called.
826		1463
827	=cut	1464	=item cf::register_async_extcmd $name => \&callback($pl,$reply->(...),@args)
828		1465
		1466	Same as C<cf::register_extcmd>, but instead of returning values, the
		1467	callback needs to clal the C<$reply> function.
		1468
		1469	=item cf::register_exticmd $name => \&callback($ns,@args)
		1470
		1471	Register a callback for execution when the client sends an (asynchronous)
		1472	exticmd packet. Exti commands are processed by the server as soon as they
		1473	are received, i.e. out of order w.r.t. other commands. The first argument
		1474	is a client socket. Exti commands can be received anytime, even before
		1475	log-in.
		1476
		1477	The values will be sent back to the client.
		1478
		1479	=item cf::register_async_exticmd $name => \&callback($ns,$reply->(...),@args)
		1480
		1481	Same as C<cf::register_extcmd>, but instead of returning values, the
		1482	callback needs to clal the C<$reply> function.
		1483
		1484	=cut
		1485
829	sub register_extcmd {	1486	sub register_extcmd($$) {
830	my ($name, $cb) = @_;	1487	my ($name, $cb) = @_;
831		1488
832	my $caller = caller;
833	#warn "registering extcmd '$name' to '$caller'";
834
835	$EXTCMD{$name} = [$cb, $caller];	1489	$EXTCMD{$name} = $cb;
836	}	1490	}
		1491
		1492	sub register_async_extcmd($$) {
		1493	my ($name, $cb) = @_;
		1494
		1495	$EXTACMD{$name} = $cb;
		1496	}
		1497
		1498	sub register_exticmd($$) {
		1499	my ($name, $cb) = @_;
		1500
		1501	$EXTICMD{$name} = $cb;
		1502	}
		1503
		1504	sub register_async_exticmd($$) {
		1505	my ($name, $cb) = @_;
		1506
		1507	$EXTIACMD{$name} = $cb;
		1508	}
		1509
		1510	use File::Glob ();
837		1511
838	cf::player->attach (	1512	cf::player->attach (
839	on_command => sub {	1513	on_unknown_command => sub {
840	my ($pl, $name, $params) = @_;	1514	my ($pl, $name, $params) = @_;
841		1515
842	my $cb = $COMMAND{$name}	1516	my $cb = $COMMAND{$name}
843	or return;	1517	or return;
844		1518
…		…
849	cf::override;	1523	cf::override;
850	},	1524	},
851	on_extcmd => sub {	1525	on_extcmd => sub {
852	my ($pl, $buf) = @_;	1526	my ($pl, $buf) = @_;
853		1527
854	my $msg = eval { from_json $buf };	1528	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
855		1529
856	if (ref $msg) {	1530	if (ref $msg) {
		1531	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		1532
857	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1533	if (my $cb = $EXTACMD{$type}) {
858	if (my %reply = $cb->[0]->($pl, $msg)) {	1534	$cb->(
859	$pl->ext_reply ($msg->{msgid}, %reply);	1535	$pl,
		1536	sub {
		1537	$pl->ext_msg ("reply-$reply", @_)
		1538	if $reply;
		1539	},
		1540	@payload
		1541	);
		1542	} else {
		1543	my @reply;
		1544
		1545	if (my $cb = $EXTCMD{$type}) {
		1546	@reply = $cb->($pl, @payload);
860	}	1547	}
		1548
		1549	$pl->ext_msg ("reply-$reply", @reply)
		1550	if $reply;
861	}	1551	}
		1552
862	} else {	1553	} else {
863	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1554	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
864	}	1555	}
865		1556
866	cf::override;	1557	cf::override;
867	},	1558	},
868	);	1559	);
869		1560
870	sub register {	1561	# "readahead" all extensions
871	my ($base, $pkg) = @_;
872
873	#TODO
874	}
875
876	sub load_extension {	1562	sub cache_extensions {
877	my ($path) = @_;	1563	my $grp = IO::AIO::aio_group;
878		1564
879	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1565	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
880	my $base = $1;	1566	for (grep /\.ext$/, @{$_[0]}) {
881	my $pkg = $1;	1567	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
882	$pkg =~ s/[^[:word:]]/_/g;
883	$pkg = "ext::$pkg";
884
885	warn "loading '$path' into '$pkg'\n";
886
887	open my $fh, "<:utf8", $path
888	or die "$path: $!";
889
890	my $source =
891	"package $pkg; use strict; use utf8;\n"
892	. "#line 1 \"$path\"\n{\n"
893	. (do { local $/; <$fh> })
894	. "\n};\n1";
895
896	eval $source
897	or die $@ ? "$path: $@\n"
898	: "extension disabled.\n";
899
900	push @exts, $pkg;
901	$ext_pkg{$base} = $pkg;
902
903	# no strict 'refs';
904	# @{"$pkg\::ISA"} = ext::;
905
906	register $base, $pkg;
907	}
908
909	sub unload_extension {
910	my ($pkg) = @_;
911
912	warn "removing extension $pkg\n";
913
914	# remove hooks
915	#TODO
916	# for my $idx (0 .. $#PLUGIN_EVENT) {
917	# delete $hook[$idx]{$pkg};
918	# }
919
920	# remove commands
921	for my $name (keys %COMMAND) {
922	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
923
924	if (@cb) {
925	$COMMAND{$name} = \@cb;
926	} else {
927	delete $COMMAND{$name};
928	}	1568	}
929	}	1569	};
930		1570
931	# remove extcmds	1571	$grp
932	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1572	}
933	delete $EXTCMD{$name};
934	}
935		1573
936	if (my $cb = $pkg->can ("unload")) {	1574	sub _ext_cfg_reg($$$$) {
937	eval {	1575	my ($rvar, $varname, $cfgname, $default) = @_;
938	$cb->($pkg);
939	1
940	} or warn "$pkg unloaded, but with errors: $@";
941	}
942		1576
943	Symbol::delete_package $pkg;	1577	$cfgname = lc $varname
		1578	unless length $cfgname;
		1579
		1580	$EXT_CFG{$cfgname} = [$rvar, $default];
		1581
		1582	$$rvar = exists $CFG{$cfgname} ? $CFG{$cfgname} : $default;
944	}	1583	}
945		1584
946	sub load_extensions {	1585	sub load_extensions {
		1586	info "loading extensions...";
		1587
		1588	%EXT_CFG = ();
		1589
		1590	cf::sync_job {
		1591	my %todo;
		1592
947	for my $ext (<$LIBDIR/*.ext>) {	1593	for my $path (<$LIBDIR/*.ext>) {
948	next unless -r $ext;	1594	next unless -r $path;
949	eval {	1595
950	load_extension $ext;	1596	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1597	my $base = $1;
		1598	my $pkg = $1;
		1599	$pkg =~ s/[^[:word:]]/_/g;
		1600	$pkg = "ext::$pkg";
		1601
		1602	open my $fh, "<:utf8", $path
		1603	or die "$path: $!";
		1604
		1605	my $source = do { local $/; <$fh> };
		1606
		1607	my %ext = (
		1608	path => $path,
		1609	base => $base,
		1610	pkg => $pkg,
		1611	);
		1612
		1613	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1614	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1615
		1616	$ext{source} =
		1617	"package $pkg; use common::sense;\n"
		1618	. "#line 1 \"$path\"\n{\n"
		1619	. $source
		1620	. "\n};\n1";
		1621
		1622	$todo{$base} = \%ext;
		1623	}
		1624
		1625	my $pass = 0;
		1626	my %done;
		1627	while (%todo) {
		1628	my $progress;
		1629
		1630	++$pass;
		1631
		1632	ext:
		1633	while (my ($k, $v) = each %todo) {
		1634	for (split /,\s*/, $v->{meta}{depends}) {
		1635	next ext
		1636	unless exists $done{$_};
		1637	}
		1638
		1639	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1640
		1641	my $source = $v->{source};
		1642
		1643	# support "CONF varname :confname = default" pseudo-statements
		1644	$source =~ s{
		1645	^ CONF \s+ ([^\s:=]+) \s* (?:: \s* ([^\s:=]+) \s* )? = ([^\n#]+)
		1646	}{
		1647	"our \$$1; BEGIN { cf::_ext_cfg_reg \\\$$1, q\x00$1\x00, q\x00$2\x00, $3 }";
		1648	}gmxe;
		1649
		1650	my $active = eval $source;
		1651
		1652	if (length $@) {
		1653	error "$v->{path}: $@\n";
		1654
		1655	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1656	if exists $v->{meta}{mandatory};
		1657
		1658	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1659	delete $todo{$k};
		1660	} else {
		1661	$done{$k} = delete $todo{$k};
		1662	push @EXTS, $v->{pkg};
		1663	$progress = 1;
		1664
		1665	info "$v->{base}: extension inactive.\n"
		1666	unless $active;
		1667	}
951	1	1668	}
952	} or warn "$ext not loaded: $@";	1669
		1670	unless ($progress) {
		1671	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1672
		1673	while (my ($k, $v) = each %todo) {
		1674	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1675	if exists $v->{meta}{mandatory};
		1676	}
		1677
		1678	last;
		1679	}
		1680	}
953	}	1681	};
954	}	1682	}
955		1683
956	#############################################################################	1684	#############################################################################
957	# load/save/clean perl data associated with a map
958		1685
959	*cf::mapsupport::on_clean = sub {	1686	=back
		1687
		1688	=head2 CORE EXTENSIONS
		1689
		1690	Functions and methods that extend core deliantra objects.
		1691
		1692	=cut
		1693
		1694	package cf::player;
		1695
		1696	use Coro::AIO;
		1697
		1698	=head3 cf::player
		1699
		1700	=over 4
		1701
		1702	=item cf::player::num_playing
		1703
		1704	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1705
		1706	=cut
		1707
		1708	sub num_playing {
		1709	scalar grep
		1710	$_->ob->map
		1711	&& !$_->hidden
		1712	&& !$_->ob->flag (cf::FLAG_WIZ),
		1713	cf::player::list
		1714	}
		1715
		1716	=item cf::player::find $login
		1717
		1718	Returns the given player object, loading it if necessary (might block).
		1719
		1720	=cut
		1721
		1722	sub playerdir($) {
		1723	"$PLAYERDIR/"
		1724	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1725	}
		1726
		1727	sub path($) {
		1728	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1729
		1730	(playerdir $login) . "/playerdata"
		1731	}
		1732
		1733	sub find_active($) {
		1734	$cf::PLAYER{$_[0]}
		1735	and $cf::PLAYER{$_[0]}->active
		1736	and $cf::PLAYER{$_[0]}
		1737	}
		1738
		1739	sub exists($) {
960	my ($map) = @_;	1740	my ($login) = @_;
961		1741
962	my $path = $map->tmpname;	1742	$cf::PLAYER{$login}
963	defined $path or return;	1743	or !aio_stat path $login
964
965	unlink "$path.pst";
966	};
967
968	cf::map->attach (prio => -10000, package => cf::mapsupport::);
969
970	#############################################################################
971	# load/save perl data associated with player->ob objects
972
973	sub all_objects(@) {
974	@_, map all_objects ($_->inv), @_
975	}	1744	}
976		1745
977	# TODO: compatibility cruft, remove when no longer needed	1746	sub find($) {
		1747	return $cf::PLAYER{$_[0]} || do {
		1748	my $login = $_[0];
		1749
		1750	my $guard = cf::lock_acquire "user_find:$login";
		1751
		1752	$cf::PLAYER{$_[0]} || do {
		1753	# rename old playerfiles to new ones
		1754	#TODO: remove when no longer required
		1755	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1756	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1757	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1758	aio_unlink +(playerdir $login) . "/$login.pl";
		1759
		1760	my $f = new_from_file cf::object::thawer path $login
		1761	or return;
		1762
		1763	my $pl = cf::player::load_pl $f
		1764	or return;
		1765
		1766	local $cf::PLAYER_LOADING{$login} = $pl;
		1767	$f->resolve_delayed_derefs;
		1768	$cf::PLAYER{$login} = $pl
		1769	}
		1770	}
		1771	}
		1772
978	cf::player->attach (	1773	cf::player->attach (
979	on_load => sub {	1774	on_load => sub {
980	my ($pl, $path) = @_;	1775	my ($pl, $path) = @_;
981		1776
982	for my $o (all_objects $pl->ob) {	1777	# restore slots saved in save, below
983	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1778	my $slots = delete $pl->{_slots};
984	$o->set_ob_key_value ("_perl_data");
985		1779
986	%$o = %{ Storable::thaw pack "H*", $value };	1780	$pl->ob->current_weapon ($slots->[0]);
987	}	1781	$pl->combat_ob ($slots->[1]);
988	}	1782	$pl->ranged_ob ($slots->[2]);
989	},	1783	},
990	);	1784	);
991		1785
992	#############################################################################	1786	sub save($) {
		1787	my ($pl) = @_;
993		1788
994	=head2 CORE EXTENSIONS	1789	return if $pl->{deny_save};
995		1790
996	Functions and methods that extend core crossfire objects.	1791	my $path = path $pl;
		1792	my $guard = cf::lock_acquire "user_save:$path";
997		1793
998	=head3 cf::player	1794	return if $pl->{deny_save};
		1795
		1796	aio_mkdir playerdir $pl, 0770;
		1797	$pl->{last_save} = $cf::RUNTIME;
		1798
		1799	cf::get_slot 0.01;
		1800
		1801	# save slots, to be restored later
		1802	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1803
		1804	$pl->save_pl ($path);
		1805	cf::cede_to_tick;
		1806	}
		1807
		1808	sub new($) {
		1809	my ($login) = @_;
		1810
		1811	my $self = create;
		1812
		1813	$self->ob->name ($login);
		1814	$self->{deny_save} = 1;
		1815
		1816	$cf::PLAYER{$login} = $self;
		1817
		1818	$self
		1819	}
		1820
		1821	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1822
		1823	=cut
		1824
		1825	sub send_msg {
		1826	my $ns = shift->ns
		1827	or return;
		1828	$ns->send_msg (@_);
		1829	}
		1830
		1831	=item $pl->quit_character
		1832
		1833	Nukes the player without looking back. If logged in, the connection will
		1834	be destroyed. May block for a long time.
		1835
		1836	=cut
		1837
		1838	sub quit_character {
		1839	my ($pl) = @_;
		1840
		1841	my $name = $pl->ob->name;
		1842
		1843	$pl->{deny_save} = 1;
		1844	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1845
		1846	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1847	$pl->deactivate;
		1848
		1849	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1850	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1851	ext::highscore::check ($pl->ob);
		1852
		1853	$pl->ns->destroy if $pl->ns;
		1854
		1855	my $path = playerdir $pl;
		1856	my $temp = "$path~$cf::RUNTIME~deleting~";
		1857	aio_rename $path, $temp;
		1858	delete $cf::PLAYER{$pl->ob->name};
		1859	$pl->destroy;
		1860
		1861	my $prefix = qr<^~\Q$name\E/>;
		1862
		1863	# nuke player maps
		1864	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1865
		1866	IO::AIO::aio_rmtree $temp;
		1867	}
		1868
		1869	=item $pl->kick
		1870
		1871	Kicks a player out of the game. This destroys the connection.
		1872
		1873	=cut
		1874
		1875	sub kick {
		1876	my ($pl, $kicker) = @_;
		1877
		1878	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1879	$pl->killer ("kicked");
		1880	$pl->ns->destroy;
		1881	}
		1882
		1883	=item cf::player::list_logins
		1884
		1885	Returns am arrayref of all valid playernames in the system, can take a
		1886	while and may block, so not sync_job-capable, ever.
		1887
		1888	=cut
		1889
		1890	sub list_logins {
		1891	my $dirs = aio_readdir $PLAYERDIR
		1892	or return [];
		1893
		1894	my @logins;
		1895
		1896	for my $login (@$dirs) {
		1897	my $path = path $login;
		1898
		1899	# a .pst is a dead give-away for a valid player
		1900	# if no pst file found, open and chekc for blocked users
		1901	if (aio_stat "$path.pst") {
		1902	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1903	aio_read $fh, 0, 512, my $buf, 0 or next;
		1904	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1905	}
		1906
		1907	utf8::decode $login;
		1908	push @logins, $login;
		1909	}
		1910
		1911	\@logins
		1912	}
		1913
		1914	=item $player->maps
		1915
		1916	=item cf::player::maps $login
		1917
		1918	Returns an arrayref of map paths that are private for this
		1919	player. May block.
		1920
		1921	=cut
		1922
		1923	sub maps($) {
		1924	my ($pl) = @_;
		1925
		1926	$pl = ref $pl ? $pl->ob->name : $pl;
		1927
		1928	my $files = aio_readdir playerdir $pl
		1929	or return;
		1930
		1931	my @paths;
		1932
		1933	for (@$files) {
		1934	utf8::decode $_;
		1935	next if /\.(?:pl|pst)$/;
		1936	next unless /^$PATH_SEP/o;
		1937
		1938	push @paths, cf::map::normalise "~$pl/$_";
		1939	}
		1940
		1941	\@paths
		1942	}
		1943
		1944	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1945
		1946	Expand deliantra pod fragments into protocol xml.
		1947
		1948	=item $player->ext_msg ($type, @msg)
		1949
		1950	Sends an ext event to the client.
		1951
		1952	=cut
		1953
		1954	sub ext_msg($$@) {
		1955	my ($self, $type, @msg) = @_;
		1956
		1957	$self->ns->ext_msg ($type, @msg);
		1958	}
		1959
		1960	=head3 cf::region
999		1961
1000	=over 4	1962	=over 4
1001		1963
1002	=item cf::player::exists $login
1003
1004	Returns true when the given account exists.
1005
1006	=cut	1964	=cut
1007		1965
1008	sub cf::player::exists($) {	1966	package cf::region;
1009	cf::player::find $_[0]
1010	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
1011	}
1012		1967
1013	=item $player->ext_reply ($msgid, $msgtype, %msg)	1968	=item cf::region::find_by_path $path
1014		1969
1015	Sends an ext reply to the player.	1970	Tries to decuce the likely region for a map knowing only its path.
1016		1971
1017	=cut	1972	=cut
1018		1973
1019	sub cf::player::ext_reply($$$%) {	1974	sub find_by_path($) {
		1975	my ($path) = @_;
		1976
		1977	$path =~ s/^~[^\/]*//; # skip ~login
		1978
		1979	my ($match, $specificity);
		1980
		1981	for my $region (list) {
		1982	if ($region->{match} && $path =~ $region->{match}) {
		1983	($match, $specificity) = ($region, $region->specificity)
		1984	if $region->specificity > $specificity;
		1985	}
		1986	}
		1987
		1988	$match
		1989	}
		1990
		1991	=back
		1992
		1993	=head3 cf::map
		1994
		1995	=over 4
		1996
		1997	=cut
		1998
		1999	package cf::map;
		2000
		2001	use Fcntl;
		2002	use Coro::AIO;
		2003
		2004	use overload
		2005	'""' => \&as_string,
		2006	fallback => 1;
		2007
		2008	our $MAX_RESET = 3600;
		2009	our $DEFAULT_RESET = 3000;
		2010
		2011	sub generate_random_map {
		2012	my ($self, $rmp) = @_;
		2013
		2014	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		2015
		2016	$self->_create_random_map ($rmp);
		2017	}
		2018
		2019	=item cf::map->register ($regex, $prio)
		2020
		2021	Register a handler for the map path matching the given regex at the
		2022	givne priority (higher is better, built-in handlers have priority 0, the
		2023	default).
		2024
		2025	=cut
		2026
		2027	sub register {
		2028	my (undef, $regex, $prio) = @_;
		2029	my $pkg = caller;
		2030
		2031	push @{"$pkg\::ISA"}, __PACKAGE__;
		2032
		2033	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		2034	}
		2035
		2036	# also paths starting with '/'
		2037	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		2038
		2039	sub thawer_merge {
1020	my ($self, $id, %msg) = @_;	2040	my ($self, $merge) = @_;
1021		2041
1022	$msg{msgid} = $id;	2042	# we have to keep some variables in memory intact
		2043	local $self->{path};
		2044	local $self->{load_path};
1023		2045
1024	$self->send ("ext " . to_json \%msg);	2046	$self->SUPER::thawer_merge ($merge);
1025	}	2047	}
		2048
		2049	sub normalise {
		2050	my ($path, $base) = @_;
		2051
		2052	$path = "$path"; # make sure it's a string
		2053
		2054	$path =~ s/\.map$//;
		2055
		2056	# map plan:
		2057	#
		2058	# /! non-realised random map exit (special hack!)
		2059	# {... are special paths that are not being touched
		2060	# ?xxx/... are special absolute paths
		2061	# ?random/... random maps
		2062	# /... normal maps
		2063	# ~user/... per-player map of a specific user
		2064
		2065	$path =~ s/$PATH_SEP/\//go;
		2066
		2067	# treat it as relative path if it starts with
		2068	# something that looks reasonable
		2069	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		2070	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		2071
		2072	$base =~ s{[^/]+/?$}{};
		2073	$path = "$base/$path";
		2074	}
		2075
		2076	for ($path) {
		2077	redo if s{/\.?/}{/};
		2078	redo if s{/[^/]+/\.\./}{/};
		2079	}
		2080
		2081	$path
		2082	}
		2083
		2084	sub new_from_path {
		2085	my (undef, $path, $base) = @_;
		2086
		2087	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2088
		2089	$path = normalise $path, $base;
		2090
		2091	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2092	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2093	my $self = bless cf::map::new, $pkg;
		2094	$self->{path} = $path; $self->path ($path);
		2095	$self->init; # pass $1 etc.
		2096	return $self;
		2097	}
		2098	}
		2099
		2100	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2101	()
		2102	}
		2103
		2104	# may re-bless or do other evil things
		2105	sub init {
		2106	my ($self) = @_;
		2107
		2108	$self
		2109	}
		2110
		2111	sub as_string {
		2112	my ($self) = @_;
		2113
		2114	"$self->{path}"
		2115	}
		2116
		2117	# the displayed name, this is a one way mapping
		2118	sub visible_name {
		2119	&as_string
		2120	}
		2121
		2122	# the original (read-only) location
		2123	sub load_path {
		2124	my ($self) = @_;
		2125
		2126	"$MAPDIR/$self->{path}.map"
		2127	}
		2128
		2129	# the temporary/swap location
		2130	sub save_path {
		2131	my ($self) = @_;
		2132
		2133	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2134	"$TMPDIR/$path.map"
		2135	}
		2136
		2137	# the unique path, undef == no special unique path
		2138	sub uniq_path {
		2139	my ($self) = @_;
		2140
		2141	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2142	"$UNIQUEDIR/$path"
		2143	}
		2144
		2145	sub decay_objects {
		2146	my ($self) = @_;
		2147
		2148	return if $self->{deny_reset};
		2149
		2150	$self->do_decay_objects;
		2151	}
		2152
		2153	sub unlink_save {
		2154	my ($self) = @_;
		2155
		2156	utf8::encode (my $save = $self->save_path);
		2157	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2158	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2159	}
		2160
		2161	sub load_header_from($) {
		2162	my ($self, $path) = @_;
		2163
		2164	utf8::encode $path;
		2165	my $f = new_from_file cf::object::thawer $path
		2166	or return;
		2167
		2168	$self->_load_header ($f)
		2169	or return;
		2170
		2171	local $MAP_LOADING{$self->{path}} = $self;
		2172	$f->resolve_delayed_derefs;
		2173
		2174	$self->{load_path} = $path;
		2175
		2176	1
		2177	}
		2178
		2179	# used to laod the header of an original map
		2180	sub load_header_orig {
		2181	my ($self) = @_;
		2182
		2183	$self->load_header_from ($self->load_path)
		2184	}
		2185
		2186	# used to laod the header of an instantiated map
		2187	sub load_header_temp {
		2188	my ($self) = @_;
		2189
		2190	$self->load_header_from ($self->save_path)
		2191	}
		2192
		2193	# called after loading the header from an instantiated map
		2194	sub prepare_temp {
		2195	my ($self) = @_;
		2196
		2197	$self->last_access ((delete $self->{last_access})
		2198	|| $cf::RUNTIME); #d#
		2199	# safety
		2200	$self->{instantiate_time} = $cf::RUNTIME
		2201	if $self->{instantiate_time} > $cf::RUNTIME;
		2202	}
		2203
		2204	# called after loading the header from an original map
		2205	sub prepare_orig {
		2206	my ($self) = @_;
		2207
		2208	$self->{load_original} = 1;
		2209	$self->{instantiate_time} = $cf::RUNTIME;
		2210	$self->last_access ($cf::RUNTIME);
		2211	$self->instantiate;
		2212	}
		2213
		2214	sub load_header {
		2215	my ($self) = @_;
		2216
		2217	if ($self->load_header_temp) {
		2218	$self->prepare_temp;
		2219	} else {
		2220	$self->load_header_orig
		2221	or return;
		2222	$self->prepare_orig;
		2223	}
		2224
		2225	$self->{deny_reset} = 1
		2226	if $self->no_reset;
		2227
		2228	$self->default_region (cf::region::find_by_path $self->{path})
		2229	unless $self->default_region;
		2230
		2231	1
		2232	}
		2233
		2234	sub find;
		2235	sub find {
		2236	my ($path, $origin) = @_;
		2237
		2238	cf::cede_to_tick;
		2239
		2240	$path = normalise $path, $origin;
		2241
		2242	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2243	my $guard2 = cf::lock_acquire "map_find:$path";
		2244
		2245	$cf::MAP{$path} || do {
		2246	my $map = new_from_path cf::map $path
		2247	or return;
		2248
		2249	$map->{last_save} = $cf::RUNTIME;
		2250
		2251	$map->load_header
		2252	or return;
		2253
		2254	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2255	# doing this can freeze the server in a sync job, obviously
		2256	#$cf::WAIT_FOR_TICK->wait;
		2257	undef $guard2;
		2258	undef $guard1;
		2259	$map->reset;
		2260	return find $path;
		2261	}
		2262
		2263	$cf::MAP{$path} = $map
		2264	}
		2265	}
		2266
		2267	sub pre_load { }
		2268	#sub post_load { } # XS
		2269
		2270	sub load {
		2271	my ($self) = @_;
		2272
		2273	local $self->{deny_reset} = 1; # loading can take a long time
		2274
		2275	my $path = $self->{path};
		2276
		2277	{
		2278	my $guard = cf::lock_acquire "map_data:$path";
		2279
		2280	return unless $self->valid;
		2281	return unless $self->state == cf::MAP_SWAPPED;
		2282
		2283	$self->alloc;
		2284
		2285	$self->pre_load;
		2286	cf::cede_to_tick;
		2287
		2288	if (exists $self->{load_path}) {
		2289	my $f = new_from_file cf::object::thawer $self->{load_path};
		2290	$f->skip_block;
		2291	$self->_load_objects ($f)
		2292	or return;
		2293
		2294	$self->post_load_original
		2295	if delete $self->{load_original};
		2296
		2297	if (my $uniq = $self->uniq_path) {
		2298	utf8::encode $uniq;
		2299	unless (aio_stat $uniq) {
		2300	if (my $f = new_from_file cf::object::thawer $uniq) {
		2301	$self->clear_unique_items;
		2302	$self->_load_objects ($f);
		2303	$f->resolve_delayed_derefs;
		2304	}
		2305	}
		2306	}
		2307
		2308	$f->resolve_delayed_derefs;
		2309	} else {
		2310	$self->post_load_original
		2311	if delete $self->{load_original};
		2312	}
		2313
		2314	$self->state (cf::MAP_INACTIVE);
		2315
		2316	cf::cede_to_tick;
		2317	# now do the right thing for maps
		2318	$self->link_multipart_objects;
		2319	$self->difficulty ($self->estimate_difficulty)
		2320	unless $self->difficulty;
		2321	cf::cede_to_tick;
		2322
		2323	unless ($self->{deny_activate}) {
		2324	$self->decay_objects;
		2325	$self->fix_auto_apply;
		2326	$self->update_buttons;
		2327	cf::cede_to_tick;
		2328	#$self->activate; # no longer activate maps automatically
		2329	}
		2330
		2331	$self->{last_save} = $cf::RUNTIME;
		2332	$self->last_access ($cf::RUNTIME);
		2333	}
		2334
		2335	$self->post_load;
		2336
		2337	1
		2338	}
		2339
		2340	# customize the map for a given player, i.e.
		2341	# return the _real_ map. used by e.g. per-player
		2342	# maps to change the path to ~playername/mappath
		2343	sub customise_for {
		2344	my ($self, $ob) = @_;
		2345
		2346	return find "~" . $ob->name . "/" . $self->{path}
		2347	if $self->per_player;
		2348
		2349	# return find "?party/" . $ob->name . "/" . $self->{path}
		2350	# if $self->per_party;
		2351
		2352	$self
		2353	}
		2354
		2355	sub find_sync {
		2356	my ($path, $origin) = @_;
		2357
		2358	# it's a bug to call this from the main context
		2359	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2360	if $Coro::current == $Coro::main;
		2361
		2362	find $path, $origin
		2363	}
		2364
		2365	sub do_load_sync {
		2366	my ($map) = @_;
		2367
		2368	# it's a bug to call this from the main context
		2369	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2370	if $Coro::current == $Coro::main;
		2371
		2372	$map->load;
		2373	}
		2374
		2375	our %MAP_PREFETCH;
		2376	our $MAP_PREFETCHER = undef;
		2377
		2378	sub find_async {
		2379	my ($path, $origin, $load) = @_;
		2380
		2381	$path = normalise $path, $origin;
		2382
		2383	if (my $map = $cf::MAP{$path}) {
		2384	return $map if !$load || $map->linkable;
		2385	}
		2386
		2387	$MAP_PREFETCH{$path} |= $load;
		2388
		2389	$MAP_PREFETCHER ||= cf::async {
		2390	$Coro::current->{desc} = "map prefetcher";
		2391
		2392	while (%MAP_PREFETCH) {
		2393	while (my ($k, $v) = each %MAP_PREFETCH) {
		2394	if (my $map = find $k) {
		2395	$map->load if $v;
		2396	}
		2397
		2398	delete $MAP_PREFETCH{$k};
		2399	}
		2400	}
		2401	undef $MAP_PREFETCHER;
		2402	};
		2403	$MAP_PREFETCHER->prio (6);
		2404
		2405	()
		2406	}
		2407
		2408	# common code, used by both ->save and ->swapout
		2409	sub _save {
		2410	my ($self) = @_;
		2411
		2412	$self->{last_save} = $cf::RUNTIME;
		2413
		2414	return unless $self->dirty;
		2415
		2416	my $save = $self->save_path; utf8::encode $save;
		2417	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2418
		2419	$self->{load_path} = $save;
		2420
		2421	return if $self->{deny_save};
		2422
		2423	local $self->{last_access} = $self->last_access;#d#
		2424
		2425	cf::async {
		2426	$Coro::current->{desc} = "map player save";
		2427	$_->contr->save for $self->players;
		2428	};
		2429
		2430	cf::get_slot 0.02;
		2431
		2432	if ($uniq) {
		2433	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2434	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2435	} else {
		2436	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2437	}
		2438	}
		2439
		2440	sub save {
		2441	my ($self) = @_;
		2442
		2443	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2444
		2445	$self->_save;
		2446	}
		2447
		2448	sub swap_out {
		2449	my ($self) = @_;
		2450
		2451	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2452
		2453	return if !$self->linkable;
		2454	return if $self->{deny_save};
		2455	return if $self->players;
		2456
		2457	# first deactivate the map and "unlink" it from the core
		2458	$self->deactivate;
		2459	$_->clear_links_to ($self) for values %cf::MAP;
		2460	$self->state (cf::MAP_SWAPPED);
		2461
		2462	# then atomically save
		2463	$self->_save;
		2464
		2465	# then free the map
		2466	$self->clear;
		2467	}
		2468
		2469	sub reset_at {
		2470	my ($self) = @_;
		2471
		2472	# TODO: safety, remove and allow resettable per-player maps
		2473	return 1e99 if $self->{deny_reset};
		2474
		2475	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2476	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2477
		2478	$time + $to
		2479	}
		2480
		2481	sub should_reset {
		2482	my ($self) = @_;
		2483
		2484	$self->reset_at <= $cf::RUNTIME
		2485	}
		2486
		2487	sub reset {
		2488	my ($self) = @_;
		2489
		2490	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2491
		2492	return if $self->players;
		2493
		2494	cf::trace "resetting map ", $self->path, "\n";
		2495
		2496	$self->state (cf::MAP_SWAPPED);
		2497
		2498	# need to save uniques path
		2499	unless ($self->{deny_save}) {
		2500	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2501
		2502	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2503	if $uniq;
		2504	}
		2505
		2506	delete $cf::MAP{$self->path};
		2507
		2508	$self->deactivate;
		2509	$_->clear_links_to ($self) for values %cf::MAP;
		2510	$self->clear;
		2511
		2512	$self->unlink_save;
		2513	$self->destroy;
		2514	}
		2515
		2516	my $nuke_counter = "aaaa";
		2517
		2518	sub nuke {
		2519	my ($self) = @_;
		2520
		2521	{
		2522	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2523
		2524	delete $cf::MAP{$self->path};
		2525
		2526	$self->unlink_save;
		2527
		2528	bless $self, "cf::map::wrap";
		2529	delete $self->{deny_reset};
		2530	$self->{deny_save} = 1;
		2531	$self->reset_timeout (1);
		2532	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2533
		2534	$cf::MAP{$self->path} = $self;
		2535	}
		2536
		2537	$self->reset; # polite request, might not happen
		2538	}
		2539
		2540	=item $maps = cf::map::tmp_maps
		2541
		2542	Returns an arrayref with all map paths of currently instantiated and saved
		2543	maps. May block.
		2544
		2545	=cut
		2546
		2547	sub tmp_maps() {
		2548	[
		2549	map {
		2550	utf8::decode $_;
		2551	/\.map$/
		2552	? normalise $_
		2553	: ()
		2554	} @{ aio_readdir $TMPDIR or [] }
		2555	]
		2556	}
		2557
		2558	=item $maps = cf::map::random_maps
		2559
		2560	Returns an arrayref with all map paths of currently instantiated and saved
		2561	random maps. May block.
		2562
		2563	=cut
		2564
		2565	sub random_maps() {
		2566	[
		2567	map {
		2568	utf8::decode $_;
		2569	/\.map$/
		2570	? normalise "?random/$_"
		2571	: ()
		2572	} @{ aio_readdir $RANDOMDIR or [] }
		2573	]
		2574	}
		2575
		2576	=item cf::map::unique_maps
		2577
		2578	Returns an arrayref of paths of all shared maps that have
		2579	instantiated unique items. May block.
		2580
		2581	=cut
		2582
		2583	sub unique_maps() {
		2584	[
		2585	map {
		2586	utf8::decode $_;
		2587	s/\.map$//; # TODO future compatibility hack
		2588	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2589	? ()
		2590	: normalise $_
		2591	} @{ aio_readdir $UNIQUEDIR or [] }
		2592	]
		2593	}
		2594
		2595	=item cf::map::static_maps
		2596
		2597	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2598	file in the shared directory excluding F</styles> and F</editor>). May
		2599	block.
		2600
		2601	=cut
		2602
		2603	sub static_maps() {
		2604	my @dirs = "";
		2605	my @maps;
		2606
		2607	while (@dirs) {
		2608	my $dir = shift @dirs;
		2609
		2610	next if $dir eq "/styles" || $dir eq "/editor";
		2611
		2612	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2613	or return;
		2614
		2615	for (@$files) {
		2616	s/\.map$// or next;
		2617	utf8::decode $_;
		2618	push @maps, "$dir/$_";
		2619	}
		2620
		2621	push @dirs, map "$dir/$_", @$dirs;
		2622	}
		2623
		2624	\@maps
		2625	}
		2626
		2627	=back
		2628
		2629	=head3 cf::object
		2630
		2631	=cut
		2632
		2633	package cf::object;
		2634
		2635	=over 4
		2636
		2637	=item $ob->inv_recursive
		2638
		2639	Returns the inventory of the object I<and> their inventories, recursively,
		2640	but I<not> the object itself.
		2641
		2642	=cut
		2643
		2644	sub inv_recursive_;
		2645	sub inv_recursive_ {
		2646	map { $_, inv_recursive_ $_->inv } @_
		2647	}
		2648
		2649	sub inv_recursive {
		2650	inv_recursive_ inv $_[0]
		2651	}
		2652
		2653	=item $ref = $ob->ref
		2654
		2655	Creates and returns a persistent reference to an object that can be stored as a string.
		2656
		2657	=item $ob = cf::object::deref ($refstring)
		2658
		2659	returns the objetc referenced by refstring. may return undef when it cannot find the object,
		2660	even if the object actually exists. May block.
		2661
		2662	=cut
		2663
		2664	sub deref {
		2665	my ($ref) = @_;
		2666
		2667	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2668	my ($uuid, $name) = ($1, $2);
		2669	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2670	or return;
		2671	$pl->ob->uuid eq $uuid
		2672	or return;
		2673
		2674	$pl->ob
		2675	} else {
		2676	warn "$ref: cannot resolve object reference\n";
		2677	undef
		2678	}
		2679	}
		2680
		2681	package cf;
1026		2682
1027	=back	2683	=back
1028		2684
1029	=head3 cf::object::player	2685	=head3 cf::object::player
1030		2686
…		…
1035	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2691	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
1036	can be C<undef>. Does the right thing when the player is currently in a	2692	can be C<undef>. Does the right thing when the player is currently in a
1037	dialogue with the given NPC character.	2693	dialogue with the given NPC character.
1038		2694
1039	=cut	2695	=cut
		2696
		2697	our $SAY_CHANNEL = {
		2698	id => "say",
		2699	title => "Map",
		2700	reply => "say ",
		2701	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2702	};
		2703
		2704	our $CHAT_CHANNEL = {
		2705	id => "chat",
		2706	title => "Chat",
		2707	reply => "chat ",
		2708	tooltip => "Player chat and shouts, global to the server.",
		2709	};
1040		2710
1041	# rough implementation of a future "reply" method that works	2711	# rough implementation of a future "reply" method that works
1042	# with dialog boxes.	2712	# with dialog boxes.
1043	#TODO: the first argument must go, split into a $npc->reply_to ( method	2713	#TODO: the first argument must go, split into a $npc->reply_to ( method
1044	sub cf::object::player::reply($$$;$) {	2714	sub cf::object::player::reply($$$;$) {
…		…
1046		2716
1047	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2717	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1048		2718
1049	if ($self->{record_replies}) {	2719	if ($self->{record_replies}) {
1050	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2720	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2721
1051	} else {	2722	} else {
		2723	my $pl = $self->contr;
		2724
		2725	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2726	my $dialog = $pl->{npc_dialog};
		2727	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2728
		2729	} else {
1052	$msg = $npc->name . " says: $msg" if $npc;	2730	$msg = $npc->name . " says: $msg" if $npc;
1053	$self->message ($msg, $flags);	2731	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2732	}
1054	}	2733	}
		2734	}
		2735
		2736	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2737
		2738	=cut
		2739
		2740	sub cf::object::send_msg {
		2741	my $pl = shift->contr
		2742	or return;
		2743	$pl->send_msg (@_);
1055	}	2744	}
1056		2745
1057	=item $player_object->may ("access")	2746	=item $player_object->may ("access")
1058		2747
1059	Returns wether the given player is authorized to access resource "access"	2748	Returns wether the given player is authorized to access resource "access"
…		…
1068	(ref $cf::CFG{"may_$access"}	2757	(ref $cf::CFG{"may_$access"}
1069	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2758	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1070	: $cf::CFG{"may_$access"})	2759	: $cf::CFG{"may_$access"})
1071	}	2760	}
1072		2761
		2762	=item $player_object->enter_link
		2763
		2764	Freezes the player and moves him/her to a special map (C<{link}>).
		2765
		2766	The player should be reasonably safe there for short amounts of time (e.g.
		2767	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2768	though, as the player cannot control the character while it is on the link
		2769	map.
		2770
		2771	Will never block.
		2772
		2773	=item $player_object->leave_link ($map, $x, $y)
		2774
		2775	Moves the player out of the special C<{link}> map onto the specified
		2776	map. If the map is not valid (or omitted), the player will be moved back
		2777	to the location he/she was before the call to C<enter_link>, or, if that
		2778	fails, to the emergency map position.
		2779
		2780	Might block.
		2781
		2782	=cut
		2783
		2784	sub link_map {
		2785	unless ($LINK_MAP) {
		2786	$LINK_MAP = cf::map::find "{link}"
		2787	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2788	$LINK_MAP->load;
		2789	}
		2790
		2791	$LINK_MAP
		2792	}
		2793
		2794	sub cf::object::player::enter_link {
		2795	my ($self) = @_;
		2796
		2797	$self->deactivate_recursive;
		2798
		2799	++$self->{_link_recursion};
		2800
		2801	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2802
		2803	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2804	if $self->map && $self->map->{path} ne "{link}";
		2805
		2806	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2807	}
		2808
		2809	sub cf::object::player::leave_link {
		2810	my ($self, $map, $x, $y) = @_;
		2811
		2812	return unless $self->contr->active;
		2813
		2814	my $link_pos = delete $self->{_link_pos};
		2815
		2816	unless ($map) {
		2817	# restore original map position
		2818	($map, $x, $y) = @{ $link_pos || [] };
		2819	$map = cf::map::find $map;
		2820
		2821	unless ($map) {
		2822	($map, $x, $y) = @$EMERGENCY_POSITION;
		2823	$map = cf::map::find $map
		2824	or die "FATAL: cannot load emergency map\n";
		2825	}
		2826	}
		2827
		2828	($x, $y) = (-1, -1)
		2829	unless (defined $x) && (defined $y);
		2830
		2831	# use -1 or undef as default coordinates, not 0, 0
		2832	($x, $y) = ($map->enter_x, $map->enter_y)
		2833	if $x <= 0 && $y <= 0;
		2834
		2835	$map->load;
		2836
		2837	return unless $self->contr->active;
		2838
		2839	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2840	if ($self->enter_map ($map, $x, $y)) {
		2841	# entering was successful
		2842	delete $self->{_link_recursion};
		2843	# only activate afterwards, to support waiting in hooks
		2844	$self->activate_recursive;
		2845	}
		2846
		2847	}
		2848
		2849	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2850
		2851	Moves the player to the given map-path and coordinates by first freezing
		2852	her, loading and preparing them map, calling the provided $check callback
		2853	that has to return the map if sucecssful, and then unfreezes the player on
		2854	the new (success) or old (failed) map position. In either case, $done will
		2855	be called at the end of this process.
		2856
		2857	Note that $check will be called with a potentially non-loaded map, so if
		2858	it needs a loaded map it has to call C<< ->load >>.
		2859
		2860	=cut
		2861
		2862	our $GOTOGEN;
		2863
		2864	sub cf::object::player::goto {
		2865	my ($self, $path, $x, $y, $check, $done) = @_;
		2866
		2867	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2868	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2869	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2870	($path, $x, $y) = @$EMERGENCY_POSITION;
		2871	}
		2872
		2873	# do generation counting so two concurrent goto's will be executed in-order
		2874	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2875
		2876	$self->enter_link;
		2877
		2878	(async {
		2879	$Coro::current->{desc} = "player::goto $path $x $y";
		2880
		2881	# *tag paths override both path and x|y
		2882	if ($path =~ /^\*(.*)$/) {
		2883	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2884	my $ob = $obs[rand @obs];
		2885
		2886	# see if we actually can go there
		2887	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2888	$ob = $obs[rand @obs];
		2889	} else {
		2890	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2891	}
		2892	# else put us there anyways for now #d#
		2893
		2894	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2895	} else {
		2896	($path, $x, $y) = (undef, undef, undef);
		2897	}
		2898	}
		2899
		2900	my $map = eval {
		2901	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2902
		2903	if ($map) {
		2904	$map = $map->customise_for ($self);
		2905	$map = $check->($map, $x, $y, $self) if $check && $map;
		2906	} else {
		2907	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2908	}
		2909
		2910	$map
		2911	};
		2912
		2913	if ($@) {
		2914	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2915	LOG llevError | logBacktrace, Carp::longmess $@;
		2916	}
		2917
		2918	if ($gen == $self->{_goto_generation}) {
		2919	delete $self->{_goto_generation};
		2920	$self->leave_link ($map, $x, $y);
		2921	}
		2922
		2923	$done->($self) if $done;
		2924	})->prio (1);
		2925	}
		2926
		2927	=item $player_object->enter_exit ($exit_object)
		2928
		2929	=cut
		2930
		2931	sub parse_random_map_params {
		2932	my ($spec) = @_;
		2933
		2934	my $rmp = { # defaults
		2935	xsize => (cf::rndm 15, 40),
		2936	ysize => (cf::rndm 15, 40),
		2937	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2938	#layout => string,
		2939	};
		2940
		2941	for (split /\n/, $spec) {
		2942	my ($k, $v) = split /\s+/, $_, 2;
		2943
		2944	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2945	}
		2946
		2947	$rmp
		2948	}
		2949
		2950	sub prepare_random_map {
		2951	my ($exit) = @_;
		2952
		2953	# all this does is basically replace the /! path by
		2954	# a new random map path (?random/...) with a seed
		2955	# that depends on the exit object
		2956
		2957	my $rmp = parse_random_map_params $exit->msg;
		2958
		2959	if ($exit->map) {
		2960	$rmp->{region} = $exit->region->name;
		2961	$rmp->{origin_map} = $exit->map->path;
		2962	$rmp->{origin_x} = $exit->x;
		2963	$rmp->{origin_y} = $exit->y;
		2964
		2965	$exit->map->touch;
		2966	}
		2967
		2968	$rmp->{random_seed} ||= $exit->random_seed;
		2969
		2970	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2971	my $md5 = Digest::MD5::md5_hex $data;
		2972	my $meta = "$RANDOMDIR/$md5.meta";
		2973
		2974	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2975	aio_write $fh, 0, (length $data), $data, 0;
		2976	undef $fh;
		2977	aio_rename "$meta~", $meta;
		2978
		2979	my $slaying = "?random/$md5";
		2980
		2981	if ($exit->valid) {
		2982	$exit->slaying ("?random/$md5");
		2983	$exit->msg (undef);
		2984	}
		2985	}
		2986	}
		2987
		2988	sub cf::object::player::enter_exit {
		2989	my ($self, $exit) = @_;
		2990
		2991	return unless $self->type == cf::PLAYER;
		2992
		2993	$self->enter_link;
		2994
		2995	(async {
		2996	$Coro::current->{desc} = "enter_exit";
		2997
		2998	unless (eval {
		2999	$self->deactivate_recursive; # just to be sure
		3000
		3001	my $map = cf::map::normalise $exit->slaying, $exit->map;
		3002	my $x = $exit->stats->hp;
		3003	my $y = $exit->stats->sp;
		3004
		3005	# special map handling
		3006	my $slaying = $exit->slaying;
		3007
		3008	# special map handling
		3009	if ($slaying eq "/!") {
		3010	my $guard = cf::lock_acquire "exit_prepare:$exit";
		3011
		3012	prepare_random_map $exit
		3013	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		3014
		3015	$map = $exit->slaying;
		3016
		3017	} elsif ($slaying eq '!up') {
		3018	$map = $exit->map->tile_path (cf::TILE_UP);
		3019	$x = $exit->x;
		3020	$y = $exit->y;
		3021
		3022	} elsif ($slaying eq '!down') {
		3023	$map = $exit->map->tile_path (cf::TILE_DOWN);
		3024	$x = $exit->x;
		3025	$y = $exit->y;
		3026	}
		3027
		3028	$self->goto ($map, $x, $y);
		3029
		3030	# if exit is damned, update players death & WoR home-position
		3031	$self->contr->savebed ($map, $x, $y)
		3032	if $exit->flag (cf::FLAG_DAMNED);
		3033
		3034	1
		3035	}) {
		3036	$self->message ("Something went wrong deep within the deliantra server. "
		3037	. "I'll try to bring you back to the map you were before. "
		3038	. "Please report this to the dungeon master!",
		3039	cf::NDI_UNIQUE | cf::NDI_RED);
		3040
		3041	error "ERROR in enter_exit: $@";
		3042	$self->leave_link;
		3043	}
		3044	})->prio (1);
		3045	}
		3046
1073	=head3 cf::client	3047	=head3 cf::client
1074		3048
1075	=over 4	3049	=over 4
1076		3050
1077	=item $client->send_drawinfo ($text, $flags)	3051	=item $client->send_drawinfo ($text, $flags)
…		…
1083		3057
1084	sub cf::client::send_drawinfo {	3058	sub cf::client::send_drawinfo {
1085	my ($self, $text, $flags) = @_;	3059	my ($self, $text, $flags) = @_;
1086		3060
1087	utf8::encode $text;	3061	utf8::encode $text;
1088	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	3062	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
1089	}	3063	}
1090		3064
		3065	=item $client->send_big_packet ($pkt)
		3066
		3067	Like C<send_packet>, but tries to compress large packets, and fragments
		3068	them as required.
		3069
		3070	=cut
		3071
		3072	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3073
		3074	sub cf::client::send_big_packet {
		3075	my ($self, $pkt) = @_;
		3076
		3077	# try lzf for large packets
		3078	$pkt = "lzf " . Compress::LZF::compress $pkt
		3079	if 1024 <= length $pkt and $self->{can_lzf};
		3080
		3081	# split very large packets
		3082	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3083	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3084	$pkt = "frag";
		3085	}
		3086
		3087	$self->send_packet ($pkt);
		3088	}
		3089
		3090	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3091
		3092	Send a drawinfo or msg packet to the client, formatting the msg for the
		3093	client if neccessary. C<$type> should be a string identifying the type of
		3094	the message, with C<log> being the default. If C<$color> is negative, suppress
		3095	the message unless the client supports the msg packet.
		3096
		3097	=cut
		3098
		3099	# non-persistent channels (usually the info channel)
		3100	our %CHANNEL = (
		3101	"c/motd" => {
		3102	id => "infobox",
		3103	title => "MOTD",
		3104	reply => undef,
		3105	tooltip => "The message of the day",
		3106	},
		3107	"c/identify" => {
		3108	id => "infobox",
		3109	title => "Identify",
		3110	reply => undef,
		3111	tooltip => "Items recently identified",
		3112	},
		3113	"c/examine" => {
		3114	id => "infobox",
		3115	title => "Examine",
		3116	reply => undef,
		3117	tooltip => "Signs and other items you examined",
		3118	},
		3119	"c/shopinfo" => {
		3120	id => "infobox",
		3121	title => "Shop Info",
		3122	reply => undef,
		3123	tooltip => "What your bargaining skill tells you about the shop",
		3124	},
		3125	"c/book" => {
		3126	id => "infobox",
		3127	title => "Book",
		3128	reply => undef,
		3129	tooltip => "The contents of a note or book",
		3130	},
		3131	"c/lookat" => {
		3132	id => "infobox",
		3133	title => "Look",
		3134	reply => undef,
		3135	tooltip => "What you saw there",
		3136	},
		3137	"c/who" => {
		3138	id => "infobox",
		3139	title => "Players",
		3140	reply => undef,
		3141	tooltip => "Shows players who are currently online",
		3142	},
		3143	"c/body" => {
		3144	id => "infobox",
		3145	title => "Body Parts",
		3146	reply => undef,
		3147	tooltip => "Shows which body parts you posess and are available",
		3148	},
		3149	"c/statistics" => {
		3150	id => "infobox",
		3151	title => "Statistics",
		3152	reply => undef,
		3153	tooltip => "Shows your primary statistics",
		3154	},
		3155	"c/skills" => {
		3156	id => "infobox",
		3157	title => "Skills",
		3158	reply => undef,
		3159	tooltip => "Shows your experience per skill and item power",
		3160	},
		3161	"c/shopitems" => {
		3162	id => "infobox",
		3163	title => "Shop Items",
		3164	reply => undef,
		3165	tooltip => "Shows the items currently for sale in this shop",
		3166	},
		3167	"c/resistances" => {
		3168	id => "infobox",
		3169	title => "Resistances",
		3170	reply => undef,
		3171	tooltip => "Shows your resistances",
		3172	},
		3173	"c/pets" => {
		3174	id => "infobox",
		3175	title => "Pets",
		3176	reply => undef,
		3177	tooltip => "Shows information abotu your pets/a specific pet",
		3178	},
		3179	"c/perceiveself" => {
		3180	id => "infobox",
		3181	title => "Perceive Self",
		3182	reply => undef,
		3183	tooltip => "You gained detailed knowledge about yourself",
		3184	},
		3185	"c/uptime" => {
		3186	id => "infobox",
		3187	title => "Uptime",
		3188	reply => undef,
		3189	tooltip => "How long the server has been running since last restart",
		3190	},
		3191	"c/mapinfo" => {
		3192	id => "infobox",
		3193	title => "Map Info",
		3194	reply => undef,
		3195	tooltip => "Information related to the maps",
		3196	},
		3197	"c/party" => {
		3198	id => "party",
		3199	title => "Party",
		3200	reply => "gsay ",
		3201	tooltip => "Messages and chat related to your party",
		3202	},
		3203	"c/death" => {
		3204	id => "death",
		3205	title => "Death",
		3206	reply => undef,
		3207	tooltip => "Reason for and more info about your most recent death",
		3208	},
		3209	"c/say" => $SAY_CHANNEL,
		3210	"c/chat" => $CHAT_CHANNEL,
		3211	);
		3212
		3213	sub cf::client::send_msg {
		3214	my ($self, $channel, $msg, $color, @extra) = @_;
		3215
		3216	$msg = $self->pl->expand_cfpod ($msg)
		3217	unless $color & cf::NDI_VERBATIM;
		3218
		3219	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3220
		3221	# check predefined channels, for the benefit of C
		3222	if ($CHANNEL{$channel}) {
		3223	$channel = $CHANNEL{$channel};
		3224
		3225	$self->ext_msg (channel_info => $channel);
		3226	$channel = $channel->{id};
		3227
		3228	} elsif (ref $channel) {
		3229	# send meta info to client, if not yet sent
		3230	unless (exists $self->{channel}{$channel->{id}}) {
		3231	$self->{channel}{$channel->{id}} = $channel;
		3232	$self->ext_msg (channel_info => $channel);
		3233	}
		3234
		3235	$channel = $channel->{id};
		3236	}
		3237
		3238	return unless @extra || length $msg;
		3239
		3240	# default colour, mask it out
		3241	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3242	if $color & cf::NDI_DEF;
		3243
		3244	my $pkt = "msg "
		3245	. $self->{json_coder}->encode (
		3246	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3247	);
		3248
		3249	$self->send_big_packet ($pkt);
		3250	}
		3251
		3252	=item $client->ext_msg ($type, @msg)
		3253
		3254	Sends an ext event to the client.
		3255
		3256	=cut
		3257
		3258	sub cf::client::ext_msg($$@) {
		3259	my ($self, $type, @msg) = @_;
		3260
		3261	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3262	}
1091		3263
1092	=item $success = $client->query ($flags, "text", \&cb)	3264	=item $success = $client->query ($flags, "text", \&cb)
1093		3265
1094	Queues a query to the client, calling the given callback with	3266	Queues a query to the client, calling the given callback with
1095	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	3267	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
1096	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	3268	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
1097		3269
1098	Queries can fail, so check the return code. Or don't, as queries will become	3270	Queries can fail, so check the return code. Or don't, as queries will
1099	reliable at some point in the future.	3271	become reliable at some point in the future.
1100		3272
1101	=cut	3273	=cut
1102		3274
1103	sub cf::client::query {	3275	sub cf::client::query {
1104	my ($self, $flags, $text, $cb) = @_;	3276	my ($self, $flags, $text, $cb) = @_;
…		…
1112	utf8::encode $text;	3284	utf8::encode $text;
1113	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	3285	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
1114		3286
1115	$self->send_packet ($self->{query_queue}[0][0])	3287	$self->send_packet ($self->{query_queue}[0][0])
1116	if @{ $self->{query_queue} } == 1;	3288	if @{ $self->{query_queue} } == 1;
		3289
		3290	1
1117	}	3291	}
1118		3292
1119	cf::client->attach (	3293	cf::client->attach (
		3294	on_connect => sub {
		3295	my ($ns) = @_;
		3296
		3297	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3298	},
1120	on_reply => sub {	3299	on_reply => sub {
1121	my ($ns, $msg) = @_;	3300	my ($ns, $msg) = @_;
1122		3301
1123	# this weird shuffling is so that direct followup queries	3302	# this weird shuffling is so that direct followup queries
1124	# get handled first	3303	# get handled first
1125	my $queue = delete $ns->{query_queue};	3304	my $queue = delete $ns->{query_queue}
		3305	or return; # be conservative, not sure how that can happen, but we saw a crash here
1126		3306
1127	(shift @$queue)->[1]->($msg);	3307	(shift @$queue)->[1]->($msg);
		3308	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
1128		3309
1129	push @{ $ns->{query_queue} }, @$queue;	3310	push @{ $ns->{query_queue} }, @$queue;
1130		3311
1131	if (@{ $ns->{query_queue} } == @$queue) {	3312	if (@{ $ns->{query_queue} } == @$queue) {
1132	if (@$queue) {	3313	if (@$queue) {
…		…
1134	} else {	3315	} else {
1135	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	3316	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
1136	}	3317	}
1137	}	3318	}
1138	},	3319	},
		3320	on_exticmd => sub {
		3321	my ($ns, $buf) = @_;
		3322
		3323	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3324
		3325	if (ref $msg) {
		3326	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3327
		3328	if (my $cb = $EXTIACMD{$type}) {
		3329	$cb->(
		3330	$ns,
		3331	sub {
		3332	$ns->ext_msg ("reply-$reply", @_)
		3333	if $reply;
		3334	},
		3335	@payload
		3336	);
		3337	} else {
		3338	my @reply;
		3339
		3340	if (my $cb = $EXTICMD{$type}) {
		3341	@reply = $cb->($ns, @payload);
		3342	}
		3343
		3344	$ns->ext_msg ("reply-$reply", @reply)
		3345	if $reply;
		3346	}
		3347	} else {
		3348	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3349	}
		3350
		3351	cf::override;
		3352	},
1139	);	3353	);
1140		3354
1141	=item $client->coro (\&cb)	3355	=item $client->async (\&cb)
1142		3356
1143	Create a new coroutine, running the specified callback. The coroutine will	3357	Create a new coroutine, running the specified callback. The coroutine will
1144	be automatically cancelled when the client gets destroyed (e.g. on logout,	3358	be automatically cancelled when the client gets destroyed (e.g. on logout,
1145	or loss of connection).	3359	or loss of connection).
1146		3360
1147	=cut	3361	=cut
1148		3362
1149	sub cf::client::coro {	3363	sub cf::client::async {
1150	my ($self, $cb) = @_;	3364	my ($self, $cb) = @_;
1151		3365
1152	my $coro; $coro = async {	3366	my $coro = &Coro::async ($cb);
1153	eval {
1154	$cb->();
1155	};
1156	warn $@ if $@;
1157	};
1158		3367
1159	$coro->on_destroy (sub {	3368	$coro->on_destroy (sub {
1160	delete $self->{_coro}{$coro+0};	3369	delete $self->{_coro}{$coro+0};
1161	});	3370	});
1162		3371
…		…
1164		3373
1165	$coro	3374	$coro
1166	}	3375	}
1167		3376
1168	cf::client->attach (	3377	cf::client->attach (
1169	on_destroy => sub {	3378	on_client_destroy => sub {
1170	my ($ns) = @_;	3379	my ($ns) = @_;
1171		3380
1172	$_->cancel for values %{ (delete $ns->{_coro}) || {} };	3381	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
1173	},	3382	},
1174	);	3383	);
…		…
1189	our $safe = new Safe "safe";	3398	our $safe = new Safe "safe";
1190	our $safe_hole = new Safe::Hole;	3399	our $safe_hole = new Safe::Hole;
1191		3400
1192	$SIG{FPE} = 'IGNORE';	3401	$SIG{FPE} = 'IGNORE';
1193		3402
1194	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3403	$safe->permit_only (Opcode::opset qw(
		3404	:base_core :base_mem :base_orig :base_math :base_loop
		3405	grepstart grepwhile mapstart mapwhile
		3406	sort time
		3407	));
1195		3408
1196	# here we export the classes and methods available to script code	3409	# here we export the classes and methods available to script code
1197		3410
1198	=pod	3411	=pod
1199		3412
1200	The following fucntions and emthods are available within a safe environment:	3413	The following functions and methods are available within a safe environment:
1201		3414
1202	cf::object contr pay_amount pay_player map	3415	cf::object
		3416	contr pay_amount pay_player map x y force_find force_add destroy
		3417	insert remove name archname title slaying race decrease split
		3418	value
		3419
1203	cf::object::player player	3420	cf::object::player
1204	cf::player peaceful	3421	player
1205	cf::map trigger	3422
		3423	cf::player
		3424	peaceful
		3425
		3426	cf::map
		3427	trigger
1206		3428
1207	=cut	3429	=cut
1208		3430
1209	for (	3431	for (
1210	["cf::object" => qw(contr pay_amount pay_player map)],	3432	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3433	insert remove inv nrof name archname title slaying race
		3434	decrease split destroy change_exp value msg lore send_msg)],
1211	["cf::object::player" => qw(player)],	3435	["cf::object::player" => qw(player)],
1212	["cf::player" => qw(peaceful)],	3436	["cf::player" => qw(peaceful send_msg)],
1213	["cf::map" => qw(trigger)],	3437	["cf::map" => qw(trigger)],
1214	) {	3438	) {
1215	no strict 'refs';
1216	my ($pkg, @funs) = @$_;	3439	my ($pkg, @funs) = @$_;
1217	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3440	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
1218	for @funs;	3441	for @funs;
1219	}	3442	}
1220		3443
…		…
1235		3458
1236	my $qcode = $code;	3459	my $qcode = $code;
1237	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3460	$qcode =~ s/"/‟/g; # not allowed in #line filenames
1238	$qcode =~ s/\n/\\n/g;	3461	$qcode =~ s/\n/\\n/g;
1239		3462
		3463	%vars = (_dummy => 0) unless %vars;
		3464
		3465	my @res;
1240	local $_;	3466	local $_;
1241	local @safe::cf::_safe_eval_args = values %vars;
1242		3467
1243	my $eval =	3468	my $eval =
1244	"do {\n"	3469	"do {\n"
1245	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3470	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
1246	. "#line 0 \"{$qcode}\"\n"	3471	. "#line 0 \"{$qcode}\"\n"
1247	. $code	3472	. $code
1248	. "\n}"	3473	. "\n}"
1249	;	3474	;
1250		3475
		3476	if ($CFG{safe_eval}) {
1251	sub_generation_inc;	3477	sub_generation_inc;
		3478	local @safe::cf::_safe_eval_args = values %vars;
1252	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3479	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
1253	sub_generation_inc;	3480	sub_generation_inc;
		3481	} else {
		3482	local @cf::_safe_eval_args = values %vars;
		3483	@res = wantarray ? eval eval : scalar eval $eval;
		3484	}
1254		3485
1255	if ($@) {	3486	if ($@) {
1256	warn "$@";	3487	warn "$@",
1257	warn "while executing safe code '$code'\n";	3488	"while executing safe code '$code'\n",
1258	warn "with arguments " . (join " ", %vars) . "\n";	3489	"with arguments " . (join " ", %vars) . "\n";
1259	}	3490	}
1260		3491
1261	wantarray ? @res : $res[0]	3492	wantarray ? @res : $res[0]
1262	}	3493	}
1263		3494
…		…
1277	=cut	3508	=cut
1278		3509
1279	sub register_script_function {	3510	sub register_script_function {
1280	my ($fun, $cb) = @_;	3511	my ($fun, $cb) = @_;
1281		3512
1282	no strict 'refs';	3513	$fun = "safe::$fun" if $CFG{safe_eval};
1283	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3514	*$fun = $safe_hole->wrap ($cb);
1284	}	3515	}
1285		3516
1286	=back	3517	=back
1287		3518
1288	=cut	3519	=cut
1289		3520
1290	#############################################################################	3521	#############################################################################
1291		3522	# the server's init and main functions
1292	=head2 EXTENSION DATABASE SUPPORT
1293
1294	Crossfire maintains a very simple database for extension use. It can
1295	currently store anything that can be serialised using Storable, which
1296	excludes objects.
1297
1298	The parameter C<$family> should best start with the name of the extension
1299	using it, it should be unique.
1300
1301	=over 4
1302
1303	=item $hashref = cf::db_get $family
1304
1305	Return a hashref for use by the extension C<$family>, which can be
1306	modified. After modifications, you have to call C<cf::db_dirty> or
1307	C<cf::db_sync>.
1308
1309	=item $value = cf::db_get $family => $key
1310
1311	Returns a single value from the database
1312
1313	=item cf::db_put $family => $hashref
1314
1315	Stores the given family hashref into the database. Updates are delayed, if
1316	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1317
1318	=item cf::db_put $family => $key => $value
1319
1320	Stores the given C<$value> in the family hash. Updates are delayed, if you
1321	want the data to be synced to disk immediately, use C<cf::db_sync>.
1322
1323	=item cf::db_dirty
1324
1325	Marks the database as dirty, to be updated at a later time.
1326
1327	=item cf::db_sync
1328
1329	Immediately write the database to disk I<if it is dirty>.
1330
1331	=cut
1332
1333	our $DB;
1334		3523
1335	{	3524	{
1336	my $path = cf::localdir . "/database.pst";	3525	package cf::face;
1337		3526
1338	sub db_load() {	3527	our %HASH; # hash => idx
1339	warn "loading database $path\n";#d# remove later	3528	our @DATA; # dynamically-created facedata, only faceste 0 used
1340	$DB = stat $path ? Storable::retrieve $path : { };	3529	our @FOFS; # file offset, if > 0
1341	}	3530	our @SIZE; # size of face, in octets
		3531	our @META; # meta hash of face, if any
		3532	our $DATAFH; # facedata filehandle
1342		3533
1343	my $pid;	3534	# internal api, not finalised
		3535	sub set {
		3536	my ($name, $type, $data) = @_;
1344		3537
1345	sub db_save() {	3538	my $idx = cf::face::find $name;
1346	warn "saving database $path\n";#d# remove later
1347	waitpid $pid, 0 if $pid;
1348	if (0 == ($pid = fork)) {
1349	$DB->{_meta}{version} = 1;
1350	Storable::nstore $DB, "$path~";
1351	rename "$path~", $path;
1352	cf::_exit 0 if defined $pid;
1353	}
1354	}
1355		3539
1356	my $dirty;	3540	if ($idx) {
1357		3541	delete $HASH{cf::face::get_chksum $idx};
1358	sub db_sync() {
1359	db_save if $dirty;
1360	undef $dirty;
1361	}
1362
1363	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1364	db_sync;
1365	});
1366
1367	sub db_dirty() {
1368	$dirty = 1;
1369	$idle->start;
1370	}
1371
1372	sub db_get($;$) {
1373	@_ >= 2
1374	? $DB->{$_[0]}{$_[1]}
1375	: ($DB->{$_[0]} ||= { })
1376	}
1377
1378	sub db_put($$;$) {
1379	if (@_ >= 3) {
1380	$DB->{$_[0]}{$_[1]} = $_[2];
1381	} else {	3542	} else {
1382	$DB->{$_[0]} = $_[1];	3543	$idx = cf::face::alloc $name;
1383	}
1384	db_dirty;
1385	}
1386
1387	cf::global->attach (
1388	prio => 10000,
1389	on_cleanup => sub {
1390	db_sync;
1391	},	3544	}
		3545
		3546	my $hash = cf::face::mangle_csum Digest::MD5::md5 $data;
		3547
		3548	cf::face::set_type $idx, $type;
		3549	cf::face::set_csum $idx, 0, $hash;
		3550
		3551	# we need to destroy the SV itself, not just modify it, as a running ix
		3552	# might hold a reference to it: "delete" achieves that.
		3553	delete $FOFS[0][$idx];
		3554	delete $DATA[0][$idx];
		3555	$DATA[0][$idx] = $data;
		3556	$SIZE[0][$idx] = length $data;
		3557	delete $META[$idx];
		3558	$HASH{$hash} = $idx;#d#
		3559
		3560	$idx
		3561	}
		3562
		3563	sub _get_data($$$) {
		3564	my ($idx, $set, $cb) = @_;
		3565
		3566	if (defined $DATA[$set][$idx]) {
		3567	$cb->($DATA[$set][$idx]);
		3568	} elsif (my $fofs = $FOFS[$set][$idx]) {
		3569	my $size = $SIZE[$set][$idx];
		3570	my $buf;
		3571	IO::AIO::aio_read $DATAFH, $fofs, $size, $buf, 0, sub {
		3572	if ($_[0] == $size) {
		3573	#cf::debug "read face $idx, $size from $fofs as ", length $buf;#d#
		3574	$cb->($buf);
		3575	} else {
		3576	cf::error "INTERNAL ERROR: unable to read facedata for face $idx#$set ($size, $fofs), ignoring request.";
		3577	}
		3578	};
		3579	} else {
		3580	cf::error "requested facedata for unknown face $idx#$set, ignoring.";
		3581	}
		3582	}
		3583
		3584	# rather ineffient
		3585	sub cf::face::get_data($;$) {
		3586	my ($idx, $set) = @_;
		3587
		3588	_get_data $idx, $set, Coro::rouse_cb;
		3589	Coro::rouse_wait
		3590	}
		3591
		3592	sub cf::face::ix {
		3593	my ($ns, $set, $idx, $pri) = @_;
		3594
		3595	_get_data $idx, $set, sub {
		3596	$ns->ix_send ($idx, $pri, $_[0]);
		3597	};
		3598	}
		3599	}
		3600
		3601	sub load_facedata($) {
		3602	my ($path) = @_;
		3603
		3604	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3605
		3606	trace "loading facedata from $path\n";
		3607
		3608	my $facedata = decode_storable load_file "$path/faceinfo";
		3609
		3610	$facedata->{version} == 2
		3611	or cf::cleanup "$path/faceinfo: version mismatch, cannot proceed.";
		3612
		3613	my $fh = aio_open "$DATADIR/facedata", IO::AIO::O_RDONLY, 0
		3614	or cf::cleanup "$path/facedata: $!, cannot proceed.";
		3615
		3616	get_slot 1, -100, "load_facedata"; # make sure we get a very big slot
		3617
		3618	# BEGIN ATOMIC
		3619	# from here on, everything must be atomic - no thread switch allowed
		3620	my $t1 = EV::time;
		3621
		3622	{
		3623	my $faces = $facedata->{faceinfo};
		3624
		3625	for my $face (sort keys %$faces) {
		3626	my $info = $faces->{$face};
		3627	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3628
		3629	cf::face::set_visibility $idx, $info->{visibility};
		3630	cf::face::set_magicmap $idx, $info->{magicmap};
		3631	cf::face::set_csum $idx, 0, $info->{hash64}; $cf::face::SIZE[0][$idx] = $info->{size64}; $cf::face::FOFS[0][$idx] = $info->{fofs64};
		3632	cf::face::set_csum $idx, 1, $info->{hash32}; $cf::face::SIZE[1][$idx] = $info->{size32}; $cf::face::FOFS[1][$idx] = $info->{fofs32};
		3633	cf::face::set_csum $idx, 2, $info->{glyph}; $cf::face::DATA[2][$idx] = $info->{glyph};
		3634	$cf::face::HASH{$info->{hash64}} = $idx;
		3635	delete $cf::face::META[$idx];
		3636	}
		3637
		3638	while (my ($face, $info) = each %$faces) {
		3639	next unless $info->{smooth};
		3640
		3641	my $idx = cf::face::find $face
		3642	or next;
		3643
		3644	if (my $smooth = cf::face::find $info->{smooth}) {
		3645	cf::face::set_smooth $idx, $smooth;
		3646	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3647	} else {
		3648	error "smooth face '$info->{smooth}' not found for face '$face'";
		3649	}
		3650	}
		3651	}
		3652
		3653	{
		3654	my $anims = $facedata->{animinfo};
		3655
		3656	while (my ($anim, $info) = each %$anims) {
		3657	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3658	}
		3659
		3660	cf::anim::invalidate_all; # d'oh
		3661	}
		3662
		3663	{
		3664	my $res = $facedata->{resource};
		3665
		3666	while (my ($name, $info) = each %$res) {
		3667	if (defined (my $type = $info->{type})) {
		3668	# TODO: different hash - must free and use new index, or cache ixface data queue
		3669	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3670
		3671	cf::face::set_type $idx, $type;
		3672	cf::face::set_csum $idx, 0, $info->{hash};
		3673	$cf::face::SIZE[0][$idx] = $info->{size};
		3674	$cf::face::FOFS[0][$idx] = $info->{fofs};
		3675	$cf::face::META[$idx] = $type & 1 ? undef : $info->{meta}; # preserve meta unless prepended already
		3676	$cf::face::HASH{$info->{hash}} = $idx;
		3677	} else {
		3678	# $RESOURCE{$name} = $info; # unused
		3679	}
		3680	}
		3681	}
		3682
		3683	($fh, $cf::face::DATAFH) = ($cf::face::DATAFH, $fh);
		3684
		3685	# HACK to clear player env face cache, we need some signal framework
		3686	# for this (global event?)
		3687	%ext::player_env::MUSIC_FACE_CACHE = ();
		3688
		3689	# END ATOMIC
		3690
		3691	cf::debug "facedata atomic update time ", EV::time - $t1;
		3692
		3693	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3694
		3695	aio_close $fh if $fh; # close old facedata
		3696
		3697	1
		3698	}
		3699
		3700	register_exticmd fx_want => sub {
		3701	my ($ns, $want) = @_;
		3702
		3703	while (my ($k, $v) = each %$want) {
		3704	$ns->fx_want ($k, $v);
		3705	}
		3706	};
		3707
		3708	sub load_resource_file($) {
		3709	my $guard = lock_acquire "load_resource_file";
		3710
		3711	my $status = load_resource_file_ $_[0];
		3712	get_slot 0.1, 100;
		3713	cf::arch::commit_load;
		3714
		3715	$status
		3716	}
		3717
		3718	sub reload_exp_table {
		3719	_reload_exp_table;
		3720
		3721	cf::face::set
		3722	"res/exp_table" => FT_RSRC,
		3723	JSON::XS->new->utf8->canonical->encode (
		3724	[map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]
		3725	);
		3726	}
		3727
		3728	sub reload_materials {
		3729	_reload_materials;
		3730	}
		3731
		3732	sub reload_regions {
		3733	# HACK to clear player env face cache, we need some signal framework
		3734	# for this (global event?)
		3735	%ext::player_env::MUSIC_FACE_CACHE = ();
		3736
		3737	load_resource_file "$MAPDIR/regions"
		3738	or die "unable to load regions file\n";
		3739
		3740	for (cf::region::list) {
		3741	$_->{match} = qr/$_->{match}/
		3742	if exists $_->{match};
		3743	}
		3744	}
		3745
		3746	sub reload_facedata {
		3747	load_facedata $DATADIR
		3748	or die "unable to load facedata\n";
		3749	}
		3750
		3751	sub reload_archetypes {
		3752	load_resource_file "$DATADIR/archetypes"
		3753	or die "unable to load archetypes\n";
		3754
		3755	cf::face::set
		3756	"res/skill_info" => FT_RSRC,
		3757	JSON::XS->new->utf8->canonical->encode (
		3758	[map [cf::arch::skillvec ($_)->name], 0 .. cf::arch::skillvec_size - 1]
		3759	);
		3760
		3761	cf::face::set
		3762	"res/spell_paths" => FT_RSRC,
		3763	JSON::XS->new->utf8->canonical->encode (
		3764	[map [cf::spellpathnames ($_)], 0 .. NRSPELLPATHS - 1]
		3765	);
		3766	}
		3767
		3768	sub reload_treasures {
		3769	load_resource_file "$DATADIR/treasures"
		3770	or die "unable to load treasurelists\n";
		3771	}
		3772
		3773	sub reload_sound {
		3774	trace "loading sound config from $DATADIR/sound\n";
		3775
		3776	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3777
		3778	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3779	my $sound = $soundconf->{compat}[$_]
		3780	or next;
		3781
		3782	my $face = cf::face::find "sound/$sound->[1]";
		3783	cf::sound::set $sound->[0] => $face;
		3784	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3785	}
		3786
		3787	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3788	my $face = cf::face::find "sound/$v";
		3789	cf::sound::set $k => $face;
		3790	}
		3791	}
		3792
		3793	sub reload_resources {
		3794	trace "reloading resource files...\n";
		3795
		3796	reload_materials;
		3797	reload_facedata;
		3798	reload_exp_table;
		3799	reload_sound;
		3800	reload_archetypes;
		3801	reload_regions;
		3802	reload_treasures;
		3803
		3804	trace "finished reloading resource files\n";
		3805	}
		3806
		3807	sub reload_config {
		3808	trace "reloading config file...\n";
		3809
		3810	my $config = load_file "$CONFDIR/config";
		3811	utf8::decode $config;
		3812	*CFG = decode_yaml $config;
		3813
		3814	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3815
		3816	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3817	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3818
		3819	if (exists $CFG{mlockall}) {
		3820	eval {
		3821	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3822	and die "WARNING: m(un)lockall failed: $!\n";
		3823	};
		3824	warn $@ if $@;
		3825	}
		3826	}
		3827
		3828	sub pidfile() {
		3829	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3830	or die "$PIDFILE: $!";
		3831	flock $fh, &Fcntl::LOCK_EX
		3832	or die "$PIDFILE: flock: $!";
		3833	$fh
		3834	}
		3835
		3836	# make sure only one server instance is running at any one time
		3837	sub atomic {
		3838	my $fh = pidfile;
		3839
		3840	my $pid = <$fh>;
		3841	kill 9, $pid if $pid > 0;
		3842
		3843	seek $fh, 0, 0;
		3844	print $fh $$;
		3845	}
		3846
		3847	sub main_loop {
		3848	trace "EV::loop starting\n";
		3849	if (1) {
		3850	EV::loop;
		3851	}
		3852	trace "EV::loop returned\n";
		3853	goto &main_loop unless $REALLY_UNLOOP;
		3854	}
		3855
		3856	sub main {
		3857	cf::init_globals; # initialise logging
		3858
		3859	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3860	LOG llevInfo, "Copyright (C) 2005-2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3861	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3862	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3863
		3864	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3865
		3866	# we must not ever block the main coroutine
		3867	$Coro::idle = sub {
		3868	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3869	(async {
		3870	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3871	EV::loop EV::LOOP_ONESHOT;
		3872	})->prio (Coro::PRIO_MAX);
1392	);	3873	};
		3874
		3875	evthread_start IO::AIO::poll_fileno;
		3876
		3877	cf::sync_job {
		3878	cf::incloader::init ();
		3879
		3880	db_init;
		3881
		3882	cf::init_anim;
		3883	cf::init_attackmess;
		3884	cf::init_dynamic;
		3885
		3886	cf::load_settings;
		3887
		3888	reload_resources;
		3889	reload_config;
		3890
		3891	cf::init_uuid;
		3892	cf::init_signals;
		3893	cf::init_skills;
		3894
		3895	cf::init_beforeplay;
		3896
		3897	atomic;
		3898
		3899	load_extensions;
		3900
		3901	utime time, time, $RUNTIMEFILE;
		3902
		3903	# no (long-running) fork's whatsoever before this point(!)
		3904	use POSIX ();
		3905	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3906
		3907	cf::_post_init 0;
		3908	};
		3909
		3910	cf::object::thawer::errors_are_fatal 0;
		3911	info "parse errors in files are no longer fatal from this point on.\n";
		3912
		3913	AE::postpone {
		3914	undef &main; # free gobs of memory :)
		3915	};
		3916
		3917	goto &main_loop;
1393	}	3918	}
1394		3919
1395	#############################################################################	3920	#############################################################################
1396	# the server's main()	3921	# initialisation and cleanup
1397		3922
1398	sub cfg_load {	3923	# install some emergency cleanup handlers
1399	open my $fh, "<:utf8", cf::confdir . "/config"	3924	BEGIN {
		3925	our %SIGWATCHER = ();
		3926	for my $signal (qw(INT HUP TERM)) {
		3927	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3928	cf::cleanup "SIG$signal";
		3929	};
		3930	}
		3931	}
		3932
		3933	sub write_runtime_sync {
		3934	my $t0 = AE::time;
		3935
		3936	# first touch the runtime file to show we are still running:
		3937	# the fsync below can take a very very long time.
		3938
		3939	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3940
		3941	my $guard = cf::lock_acquire "write_runtime";
		3942
		3943	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
1400	or return;	3944	or return;
1401		3945
1402	local $/;	3946	my $value = $cf::RUNTIME + 90 + 10;
1403	*CFG = YAML::Syck::Load <$fh>;	3947	# 10 is the runtime save interval, for a monotonic clock
1404	}	3948	# 60 allows for the watchdog to kill the server.
1405		3949
1406	sub main {	3950	(aio_write $fh, 0, (length $value), $value, 0) <= 0
1407	# we must not ever block the main coroutine	3951	and return;
1408	local $Coro::idle = sub {	3952
1409	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	3953	# always fsync - this file is important
1410	(Coro::unblock_sub {	3954	aio_fsync $fh
1411	Event::one_event;	3955	and return;
		3956
		3957	# touch it again to show we are up-to-date
		3958	aio_utime $fh, undef, undef;
		3959
		3960	close $fh
		3961	or return;
		3962
		3963	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3964	and return;
		3965
		3966	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3967
		3968	1
		3969	}
		3970
		3971	our $uuid_lock;
		3972	our $uuid_skip;
		3973
		3974	sub write_uuid_sync($) {
		3975	$uuid_skip ||= $_[0];
		3976
		3977	return if $uuid_lock;
		3978	local $uuid_lock = 1;
		3979
		3980	my $uuid = "$LOCALDIR/uuid";
		3981
		3982	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3983	or return;
		3984
		3985	my $value = uuid_seq uuid_cur;
		3986
		3987	unless ($value) {
		3988	info "cowardly refusing to write zero uuid value!\n";
		3989	return;
		3990	}
		3991
		3992	my $value = uuid_str $value + $uuid_skip;
		3993	$uuid_skip = 0;
		3994
		3995	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3996	and return;
		3997
		3998	# always fsync - this file is important
		3999	aio_fsync $fh
		4000	and return;
		4001
		4002	close $fh
		4003	or return;
		4004
		4005	aio_rename "$uuid~", $uuid
		4006	and return;
		4007
		4008	trace "uuid file written ($value).\n";
		4009
		4010	1
		4011
		4012	}
		4013
		4014	sub write_uuid($$) {
		4015	my ($skip, $sync) = @_;
		4016
		4017	$sync ? write_uuid_sync $skip
		4018	: async { write_uuid_sync $skip };
		4019	}
		4020
		4021	sub emergency_save() {
		4022	my $freeze_guard = cf::freeze_mainloop;
		4023
		4024	info "emergency_perl_save: enter\n";
		4025
		4026	# this is a trade-off: we want to be very quick here, so
		4027	# save all maps without fsync, and later call a global sync
		4028	# (which in turn might be very very slow)
		4029	local $USE_FSYNC = 0;
		4030
		4031	cf::sync_job {
		4032	cf::write_runtime_sync; # external watchdog should not bark
		4033
		4034	# use a peculiar iteration method to avoid tripping on perl
		4035	# refcount bugs in for. also avoids problems with players
		4036	# and maps saved/destroyed asynchronously.
		4037	info "emergency_perl_save: begin player save\n";
		4038	for my $login (keys %cf::PLAYER) {
		4039	my $pl = $cf::PLAYER{$login} or next;
		4040	$pl->valid or next;
		4041	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		4042	$pl->save;
		4043	}
		4044	info "emergency_perl_save: end player save\n";
		4045
		4046	cf::write_runtime_sync; # external watchdog should not bark
		4047
		4048	info "emergency_perl_save: begin map save\n";
		4049	for my $path (keys %cf::MAP) {
		4050	my $map = $cf::MAP{$path} or next;
		4051	$map->valid or next;
		4052	$map->save;
		4053	}
		4054	info "emergency_perl_save: end map save\n";
		4055
		4056	cf::write_runtime_sync; # external watchdog should not bark
		4057
		4058	info "emergency_perl_save: begin database checkpoint\n";
		4059	BDB::db_env_txn_checkpoint $DB_ENV;
		4060	info "emergency_perl_save: end database checkpoint\n";
		4061
		4062	info "emergency_perl_save: begin write uuid\n";
		4063	write_uuid_sync 1;
		4064	info "emergency_perl_save: end write uuid\n";
		4065
		4066	cf::write_runtime_sync; # external watchdog should not bark
		4067
		4068	trace "emergency_perl_save: syncing database to disk";
		4069	BDB::db_env_txn_checkpoint $DB_ENV;
		4070
		4071	info "emergency_perl_save: starting sync\n";
		4072	IO::AIO::aio_sync sub {
		4073	info "emergency_perl_save: finished sync\n";
1412	})->();	4074	};
		4075
		4076	cf::write_runtime_sync; # external watchdog should not bark
		4077
		4078	trace "emergency_perl_save: flushing outstanding aio requests";
		4079	while (IO::AIO::nreqs || BDB::nreqs) {
		4080	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		4081	}
		4082
		4083	cf::write_runtime_sync; # external watchdog should not bark
1413	};	4084	};
1414		4085
1415	cfg_load;	4086	info "emergency_perl_save: leave\n";
1416	db_load;	4087	}
		4088
		4089	sub post_cleanup {
		4090	my ($make_core) = @_;
		4091
		4092	IO::AIO::flush;
		4093
		4094	error Carp::longmess "post_cleanup backtrace"
		4095	if $make_core;
		4096
		4097	my $fh = pidfile;
		4098	unlink $PIDFILE if <$fh> == $$;
		4099	}
		4100
		4101	# a safer delete_package, copied from Symbol
		4102	sub clear_package($) {
		4103	my $pkg = shift;
		4104
		4105	# expand to full symbol table name if needed
		4106	unless ($pkg =~ /^main::.*::$/) {
		4107	$pkg = "main$pkg" if $pkg =~ /^::/;
		4108	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		4109	$pkg .= '::' unless $pkg =~ /::$/;
		4110	}
		4111
		4112	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		4113	my $stem_symtab = *{$stem}{HASH};
		4114
		4115	defined $stem_symtab and exists $stem_symtab->{$leaf}
		4116	or return;
		4117
		4118	# clear all symbols
		4119	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		4120	for my $name (keys %$leaf_symtab) {
		4121	_gv_clear *{"$pkg$name"};
		4122	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		4123	}
		4124	}
		4125
		4126	sub do_reload_perl() {
		4127	# can/must only be called in main
		4128	unless (in_main) {
		4129	error "can only reload from main coroutine";
		4130	return;
		4131	}
		4132
		4133	return if $RELOAD++;
		4134
		4135	my $t1 = AE::time;
		4136
		4137	while ($RELOAD) {
		4138	cf::get_slot 0.1, -1, "reload_perl";
		4139	info "perl_reload: reloading...";
		4140
		4141	trace "perl_reload: entering sync_job";
		4142
		4143	cf::sync_job {
		4144	#cf::emergency_save;
		4145
		4146	trace "perl_reload: cancelling all extension coros";
		4147	$_->cancel for values %EXT_CORO;
		4148	%EXT_CORO = ();
		4149
		4150	trace "perl_reload: removing commands";
		4151	%COMMAND = ();
		4152
		4153	trace "perl_reload: removing ext/exti commands";
		4154	%EXTCMD = ();
		4155	%EXTICMD = ();
		4156
		4157	trace "perl_reload: unloading/nuking all extensions";
		4158	for my $pkg (@EXTS) {
		4159	trace "... unloading $pkg";
		4160
		4161	if (my $cb = $pkg->can ("unload")) {
		4162	eval {
		4163	$cb->($pkg);
		4164	1
		4165	} or error "$pkg unloaded, but with errors: $@";
		4166	}
		4167
		4168	trace "... clearing $pkg";
		4169	clear_package $pkg;
		4170	}
		4171
		4172	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4173	while (my ($k, $v) = each %INC) {
		4174	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4175
		4176	trace "... unloading $k";
		4177	delete $INC{$k};
		4178
		4179	$k =~ s/\.pm$//;
		4180	$k =~ s/\//::/g;
		4181
		4182	if (my $cb = $k->can ("unload_module")) {
		4183	$cb->();
		4184	}
		4185
		4186	clear_package $k;
		4187	}
		4188
		4189	trace "perl_reload: getting rid of safe::, as good as possible";
		4190	clear_package "safe::$_"
		4191	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4192
		4193	trace "perl_reload: unloading cf.pm \"a bit\"";
		4194	delete $INC{"cf.pm"};
		4195	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4196
		4197	# don't, removes xs symbols, too,
		4198	# and global variables created in xs
		4199	#clear_package __PACKAGE__;
		4200
		4201	info "perl_reload: unload completed, starting to reload now";
		4202
		4203	trace "perl_reload: reloading cf.pm";
		4204	require cf;
		4205	cf::_connect_to_perl_1;
		4206
		4207	trace "perl_reload: loading config and database again";
		4208	cf::reload_config;
		4209
		4210	trace "perl_reload: loading extensions";
1417	load_extensions;	4211	cf::load_extensions;
1418	Event::loop;	4212
		4213	if ($REATTACH_ON_RELOAD) {
		4214	trace "perl_reload: reattaching attachments to objects/players";
		4215	_global_reattach; # objects, sockets
		4216	trace "perl_reload: reattaching attachments to maps";
		4217	reattach $_ for values %MAP;
		4218	trace "perl_reload: reattaching attachments to players";
		4219	reattach $_ for values %PLAYER;
		4220	}
		4221
		4222	cf::_post_init 1;
		4223
		4224	trace "perl_reload: leaving sync_job";
		4225
		4226	1
		4227	} or do {
		4228	error $@;
		4229	cf::cleanup "perl_reload: error, exiting.";
		4230	};
		4231
		4232	--$RELOAD;
		4233	}
		4234
		4235	$t1 = AE::time - $t1;
		4236	info "perl_reload: completed in ${t1}s\n";
		4237	};
		4238
		4239	our $RELOAD_WATCHER; # used only during reload
		4240
		4241	sub reload_perl() {
		4242	# doing reload synchronously and two reloads happen back-to-back,
		4243	# coro crashes during coro_state_free->destroy here.
		4244
		4245	$RELOAD_WATCHER ||= cf::async {
		4246	Coro::AIO::aio_wait cache_extensions;
		4247
		4248	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4249	do_reload_perl;
		4250	undef $RELOAD_WATCHER;
		4251	};
		4252	};
1419	}	4253	}
		4254
		4255	register_command "reload" => sub {
		4256	my ($who, $arg) = @_;
		4257
		4258	if ($who->flag (FLAG_WIZ)) {
		4259	$who->message ("reloading server.");
		4260	async {
		4261	$Coro::current->{desc} = "perl_reload";
		4262	reload_perl;
		4263	};
		4264	}
		4265	};
1420		4266
1421	#############################################################################	4267	#############################################################################
1422	# initialisation
1423		4268
1424	sub perl_reload() {	4269	my $bug_warning = 0;
1425	# can/must only be called in main	4270
		4271	sub wait_for_tick() {
		4272	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4273
		4274	$WAIT_FOR_TICK->wait;
		4275	}
		4276
		4277	sub wait_for_tick_begin() {
		4278	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4279
		4280	my $signal = new Coro::Signal;
		4281	push @WAIT_FOR_TICK_BEGIN, $signal;
		4282	$signal->wait;
		4283	}
		4284
		4285	sub tick {
1426	if ($Coro::current != $Coro::main) {	4286	if ($Coro::current != $Coro::main) {
1427	warn "can only reload from main coroutine\n";	4287	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4288	unless ++$bug_warning > 10;
1428	return;	4289	return;
1429	}	4290	}
1430		4291
1431	warn "reloading...";	4292	cf::one_tick; # one server iteration
1432		4293
1433	local $FREEZE = 1;	4294	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
1434	cf::emergency_save;
1435		4295
1436	eval {	4296	if ($NOW >= $NEXT_RUNTIME_WRITE) {
1437	# if anything goes wrong in here, we should simply crash as we already saved	4297	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
1438		4298	Coro::async_pool {
1439	# cancel all watchers	4299	$Coro::current->{desc} = "runtime saver";
1440	for (Event::all_watchers) {	4300	write_runtime_sync
1441	$_->cancel if $_->data & WF_AUTOCANCEL;	4301	or error "ERROR: unable to write runtime file: $!";
1442	}	4302	};
		4303	}
1443		4304
1444	# cancel all extension coros	4305	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
1445	$_->cancel for values %EXT_CORO;	4306	$sig->send;
1446	%EXT_CORO = ();	4307	}
		4308	$WAIT_FOR_TICK->broadcast;
1447		4309
1448	# unload all extensions	4310	$LOAD = ($NOW - $TICK_START) / $TICK;
1449	for (@exts) {	4311	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
1450	warn "unloading <$_>";
1451	unload_extension $_;
1452	}
1453		4312
1454	# unload all modules loaded from $LIBDIR	4313	if (0) {
1455	while (my ($k, $v) = each %INC) {	4314	if ($NEXT_TICK) {
1456	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	4315	my $jitter = $TICK_START - $NEXT_TICK;
		4316	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4317	debug "jitter $JITTER\n";#d#
		4318	}
		4319	}
		4320	}
1457		4321
1458	warn "removing <$k>";	4322	{
1459	delete $INC{$k};	4323	# configure BDB
		4324	info "initialising database";
1460		4325
1461	$k =~ s/\.pm$//;	4326	BDB::min_parallel 16;
1462	$k =~ s/\//::/g;	4327	BDB::max_poll_reqs $TICK * 0.1;
		4328	#$AnyEvent::BDB::WATCHER->priority (1);
1463		4329
1464	if (my $cb = $k->can ("unload_module")) {	4330	unless ($DB_ENV) {
1465	$cb->();	4331	$DB_ENV = BDB::db_env_create;
		4332	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4333	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4334	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4335	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4336	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4337
		4338	cf::sync_job {
		4339	eval {
		4340	BDB::db_env_open
		4341	$DB_ENV,
		4342	$BDBDIR,
		4343	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4344	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4345	0666;
		4346
		4347	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1466	}	4348	};
1467		4349
1468	Symbol::delete_package $k;	4350	cf::cleanup "db_env_open(db): $@" if $@;
1469	}	4351	};
		4352	}
1470		4353
1471	# sync database to disk	4354	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1472	cf::db_sync;	4355	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1473	IO::AIO::flush;
1474
1475	# get rid of safe::, as good as possible
1476	Symbol::delete_package "safe::$_"
1477	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1478
1479	# remove register_script_function callbacks
1480	# TODO
1481
1482	# unload cf.pm "a bit"
1483	delete $INC{"cf.pm"};
1484
1485	# don't, removes xs symbols, too,
1486	# and global variables created in xs
1487	#Symbol::delete_package __PACKAGE__;
1488
1489	# reload cf.pm
1490	warn "reloading cf.pm";
1491	require cf;
1492	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1493
1494	# load config and database again
1495	cf::cfg_load;
1496	cf::db_load;
1497
1498	# load extensions
1499	warn "load extensions";
1500	cf::load_extensions;
1501
1502	# reattach attachments to objects
1503	warn "reattach";
1504	_global_reattach;
1505	};	4356	};
1506		4357	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1507	if ($@) {	4358	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1508	warn $@;
1509	warn "error while reloading, exiting.";
1510	exit 1;
1511	}	4359	};
1512		4360	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
1513	warn "reloaded successfully";	4361	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
1514	};
1515
1516	#############################################################################
1517
1518	unless ($LINK_MAP) {
1519	$LINK_MAP = cf::map::new;
1520
1521	$LINK_MAP->width (41);
1522	$LINK_MAP->height (41);
1523	$LINK_MAP->alloc;
1524	$LINK_MAP->path ("{link}");
1525	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
1526	$LINK_MAP->in_memory (MAP_IN_MEMORY);
1527	}
1528
1529	register "<global>", __PACKAGE__;
1530
1531	register_command "perl-reload" => sub {
1532	my ($who, $arg) = @_;
1533
1534	if ($who->flag (FLAG_WIZ)) {
1535	$who->message ("start of reload.");
1536	perl_reload;
1537	$who->message ("end of reload.");
1538	}	4362	};
1539	};
1540		4363
1541	unshift @INC, $LIBDIR;	4364	info "database initialised";
		4365	}
1542		4366
1543	$TICK_WATCHER = Event->timer (	4367	{
1544	reentrant => 0,	4368	# configure IO::AIO
1545	prio => 0,	4369
1546	at => $NEXT_TICK || $TICK,	4370	info "initialising aio";
1547	data => WF_AUTOCANCEL,	4371	IO::AIO::min_parallel 8;
1548	cb => sub {	4372	IO::AIO::max_poll_time $TICK * 0.1;
1549	unless ($FREEZE) {	4373	undef $AnyEvent::AIO::WATCHER;
1550	cf::server_tick; # one server iteration	4374	info "aio initialised";
1551	$RUNTIME += $TICK;	4375	}
		4376
		4377	our $_log_backtrace;
		4378	our $_log_backtrace_last;
		4379
		4380	sub _log_backtrace {
		4381	my ($msg, @addr) = @_;
		4382
		4383	$msg =~ s/\n$//;
		4384
		4385	if ($_log_backtrace_last eq $msg) {
		4386	LOG llevInfo, "[ABT] $msg\n";
		4387	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4388	# limit the # of concurrent backtraces
		4389	} elsif ($_log_backtrace < 2) {
		4390	$_log_backtrace_last = $msg;
		4391	++$_log_backtrace;
		4392	my $perl_bt = Carp::longmess $msg;
		4393	async {
		4394	$Coro::current->{desc} = "abt $msg";
		4395
		4396	my @bt = fork_call {
		4397	@addr = map { sprintf "%x", $_ } @addr;
		4398	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4399	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4400	or die "addr2line: $!";
		4401
		4402	my @funcs;
		4403	my @res = <$fh>;
		4404	chomp for @res;
		4405	while (@res) {
		4406	my ($func, $line) = splice @res, 0, 2, ();
		4407	push @funcs, "[$func] $line";
		4408	}
		4409
		4410	@funcs
		4411	};
		4412
		4413	LOG llevInfo, "[ABT] $perl_bt\n";
		4414	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4415	LOG llevInfo, "[ABT] $_\n" for @bt;
		4416	--$_log_backtrace;
1552	}	4417	};
1553		4418	} else {
1554	$NEXT_TICK += $TICK;	4419	LOG llevInfo, "[ABT] $msg\n";
1555		4420	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1556	# if we are delayed by four ticks or more, skip them all
1557	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1558
1559	$TICK_WATCHER->at ($NEXT_TICK);
1560	$TICK_WATCHER->start;
1561	},	4421	}
1562	);	4422	}
1563		4423
1564	IO::AIO::max_poll_time $TICK * 0.2;	4424	# load additional modules
		4425	require "cf/$_.pm" for @EXTRA_MODULES;
		4426	cf::_connect_to_perl_2;
1565		4427
1566	Event->io (	4428	END { cf::emergency_save }
1567	fd => IO::AIO::poll_fileno,
1568	poll => 'r',
1569	prio => 5,
1570	data => WF_AUTOCANCEL,
1571	cb => \&IO::AIO::poll_cb,
1572	);
1573
1574	Event->timer (
1575	data => WF_AUTOCANCEL,
1576	after => 0,
1577	interval => 10,
1578	cb => sub {
1579	(Coro::unblock_sub {
1580	write_runtime
1581	or warn "ERROR: unable to write runtime file: $!";
1582	})->();
1583	},
1584	);
1585		4429
1586	1	4430	1
1587		4431

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