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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.101 by root, Mon Dec 25 14:43:23 2006 UTC vs.
Revision 1.590 by root, Sun Nov 4 02:20:11 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;	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;
		51	use Coro::AIO;
		52	use Coro::BDB 1.6;
		53	use Coro::Storable;
		54	use Coro::Util ();
18		55
19	use IO::AIO 2.3;	56	use Guard ();
		57	use JSON::XS 2.01 ();
		58	use BDB ();
		59	use Data::Dumper;
		60	use Fcntl;
20	use YAML::Syck ();	61	use YAML::XS ();
		62	use IO::AIO ();
21	use Time::HiRes;	63	use Time::HiRes;
		64	use Compress::LZF;
		65	use Digest::MD5 ();
22		66
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	67	AnyEvent::detect;
24		68
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	69	# configure various modules to our taste
26	$YAML::Syck::ImplicitUnicode = 1;	70	#
		71	$Storable::canonical = 1; # reduce rsync transfers
		72	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
27		73
28	$Coro::main->prio (Coro::PRIO_MIN);	74	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		75
		76	# make sure c-lzf reinitialises itself
		77	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		78	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		79
		80	# strictly for debugging
		81	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
29		82
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	83	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		84
		85	our @ORIG_INC;
31		86
32	our %COMMAND = ();	87	our %COMMAND = ();
33	our %COMMAND_TIME = ();	88	our %COMMAND_TIME = ();
		89
		90	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	91	our %EXTCMD = ();
		92	our %EXTICMD = ();
		93	our %EXT_CORO = (); # coroutines bound to extensions
		94	our %EXT_MAP = (); # pluggable maps
35		95
		96	our $RELOAD; # number of reloads so far, non-zero while in reload
36	our @EVENT;	97	our @EVENT;
37	our $LIBDIR = datadir . "/ext";	98	our @REFLECT; # set by XS
		99	our %REFLECT; # set by us
38		100
39	our $TICK = MAX_TIME * 1e-6;	101	our $CONFDIR = confdir;
40	our $TICK_WATCHER;	102
		103	our $DATADIR = datadir;
		104	our $LIBDIR = "$DATADIR/ext";
		105	our $PODDIR = "$DATADIR/pod";
		106	our $MAPDIR = "$DATADIR/" . mapdir;
		107
		108	our $LOCALDIR = localdir;
		109	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		110	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		111	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		112	our $RANDOMDIR = "$LOCALDIR/random";
		113	our $BDBDIR = "$LOCALDIR/db";
		114	our $PIDFILE = "$LOCALDIR/pid";
		115	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		116
		117	#our %RESOURCE; # unused
		118
		119	our $OUTPUT_RATE_MIN = 3000;
		120	our $OUTPUT_RATE_MAX = 1000000;
		121
		122	our $MAX_LINKS = 32; # how many chained exits to follow
		123	our $VERBOSE_IO = 1;
		124
		125	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		126	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	127	our $NEXT_TICK;
		128	our $USE_FSYNC = 1; # use fsync to write maps - default on
		129
		130	our $BDB_DEADLOCK_WATCHER;
		131	our $BDB_CHECKPOINT_WATCHER;
		132	our $BDB_TRICKLE_WATCHER;
		133	our $DB_ENV;
		134
		135	our @EXTRA_MODULES = qw(pod match mapscript incloader);
42		136
43	our %CFG;	137	our %CFG;
		138	our %EXT_CFG; # cfgkeyname => [var-ref, defaultvalue]
44		139
45	our $UPTIME; $UPTIME ||= time;	140	our $UPTIME; $UPTIME ||= time;
		141	our $RUNTIME = 0;
		142	our $SERVER_TICK = 0;
		143	our $NOW;
		144
		145	our (%PLAYER, %PLAYER_LOADING); # all users
		146	our (%MAP, %MAP_LOADING ); # all maps
		147	our $LINK_MAP; # the special {link} map, which is always available
		148
		149	# used to convert map paths into valid unix filenames by replacing / by ∕
		150	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		151
		152	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		153	our $LOADAVG; # same thing, but with alpha-smoothing
		154	our $JITTER; # average jitter
		155	our $TICK_START; # for load detecting purposes
		156
		157	our @POST_INIT;
		158
		159	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		160	our $REALLY_UNLOOP; # never set to true, please :)
		161
		162	our $WAIT_FOR_TICK = new Coro::Signal;
		163	our @WAIT_FOR_TICK_BEGIN;
		164
		165	binmode STDOUT;
		166	binmode STDERR;
		167
		168	# read virtual server time, if available
		169	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		170	open my $fh, "<", $RUNTIMEFILE
		171	or die "unable to read $RUNTIMEFILE file: $!";
		172	$RUNTIME = <$fh> + 0.;
		173	}
		174
		175	eval "sub TICK() { $TICK } 1" or die;
		176
		177	mkdir $_
		178	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		179
		180	our $EMERGENCY_POSITION;
		181
		182	sub cf::map::normalise;
		183
		184	sub in_main() {
		185	$Coro::current == $Coro::main
		186	}
46		187
47	#############################################################################	188	#############################################################################
48		189
		190	%REFLECT = ();
		191	for (@REFLECT) {
		192	my $reflect = JSON::XS::decode_json $_;
		193	$REFLECT{$reflect->{class}} = $reflect;
		194	}
		195
		196	# this is decidedly evil
		197	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		198
		199	#############################################################################
		200
49	=head2 GLOBAL VARIABLES	201	=head2 GLOBAL VARIABLES
50		202
51	=over 4	203	=over 4
52		204
53	=item $cf::UPTIME	205	=item $cf::UPTIME
54		206
55	The timestamp of the server start (so not actually an uptime).	207	The timestamp of the server start (so not actually an "uptime").
56		208
57	=item $cf::LIBDIR	209	=item $cf::SERVER_TICK
58		210
59	The perl library directory, where extensions and cf-specific modules can	211	An unsigned integer that starts at zero when the server is started and is
60	be found. It will be added to C<@INC> automatically.	212	incremented on every tick.
		213
		214	=item $cf::NOW
		215
		216	The (real) time of the last (current) server tick - updated before and
		217	after tick processing, so this is useful only as a rough "what time is it
		218	now" estimate.
61		219
62	=item $cf::TICK	220	=item $cf::TICK
63		221
64	The interval between server ticks, in seconds.	222	The interval between each server tick, in seconds.
		223
		224	=item $cf::RUNTIME
		225
		226	The time this server has run, starts at 0 and is increased by $cf::TICK on
		227	every server tick.
		228
		229	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		230	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		231	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		232
		233	Various directories - "/etc", read-only install directory, perl-library
		234	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		235	unique-items directory, player file directory, random maps directory and
		236	database environment.
		237
		238	=item $cf::LOADAVG
		239
		240	The current CPU load on the server (alpha-smoothed), as a value between 0
		241	(none) and 1 (overloaded), indicating how much time is spent on processing
		242	objects per tick. Healthy values are < 0.5.
		243
		244	=item $cf::LOAD
		245
		246	The raw value load value from the last tick.
65		247
66	=item %cf::CFG	248	=item %cf::CFG
67		249
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	250	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
69	from wherever your confdir points to.	251	from wherever your confdir points to.
70		252
		253	=item cf::wait_for_tick, cf::wait_for_tick_begin
		254
		255	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		256	returns directly I<after> the tick processing (and consequently, can only wake one thread
		257	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		258
		259	Note that cf::Wait_for_tick will immediately return when the server is not
		260	ticking, making it suitable for small pauses in threads that need to run
		261	when the server is paused. If that is not applicable (i.e. you I<really>
		262	want to wait, use C<$cf::WAIT_FOR_TICK>).
		263
		264	=item $cf::WAIT_FOR_TICK
		265
		266	Note that C<cf::wait_for_tick> is probably the correct thing to use. This
		267	variable contains a L<Coro::Signal> that is broadcats after every server
		268	tick. Calling C<< ->wait >> on it will suspend the caller until after the
		269	next server tick.
		270
		271	=cut
		272
		273	sub wait_for_tick();
		274	sub wait_for_tick_begin();
		275
		276	=item @cf::INVOKE_RESULTS
		277
		278	This array contains the results of the last C<invoke ()> call. When
		279	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		280	that call.
		281
		282	=item %cf::REFLECT
		283
		284	Contains, for each (C++) class name, a hash reference with information
		285	about object members (methods, scalars, arrays and flags) and other
		286	metadata, which is useful for introspection.
		287
71	=back	288	=back
72		289
73	=cut	290	=cut
74		291
75	BEGIN {	292	sub error(@) { LOG llevError, join "", @_ }
76	*CORE::GLOBAL::warn = sub {	293	sub warn (@) { LOG llevWarn , join "", @_ }
		294	sub info (@) { LOG llevInfo , join "", @_ }
		295	sub debug(@) { LOG llevDebug, join "", @_ }
		296	sub trace(@) { LOG llevTrace, join "", @_ }
		297
		298	$Coro::State::WARNHOOK = sub {
77	my $msg = join "", @_;	299	my $msg = join "", @_;
		300
78	$msg .= "\n"	301	$msg .= "\n"
79	unless $msg =~ /\n$/;	302	unless $msg =~ /\n$/;
80		303
81	print STDERR "cfperl: $msg";	304	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
82	LOG llevError, "cfperl: $msg";	305
83	};	306	LOG llevWarn, $msg;
84	}	307	};
		308
		309	$Coro::State::DIEHOOK = sub {
		310	return unless $^S eq 0; # "eq", not "=="
		311
		312	error Carp::longmess $_[0];
		313
		314	if (in_main) {#d#
		315	error "DIEHOOK called in main context, Coro bug?\n";#d#
		316	return;#d#
		317	}#d#
		318
		319	# kill coroutine otherwise
		320	Coro::terminate
		321	};
85		322
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	323	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	324	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
88	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	325	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
89	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	326	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
90	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	327	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		328	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
91	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	329	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
92		330
93	# we bless all objects into (empty) derived classes to force a method lookup	331	# we bless all objects into (empty) derived classes to force a method lookup
94	# within the Safe compartment.	332	# within the Safe compartment.
95	for my $pkg (qw(	333	for my $pkg (qw(
96	cf::global cf::attachable	334	cf::global cf::attachable
97	cf::object cf::object::player	335	cf::object cf::object::player
98	cf::client cf::player	336	cf::client cf::player
99	cf::arch cf::living	337	cf::arch cf::living
		338	cf::map cf::mapspace
100	cf::map cf::party cf::region	339	cf::party cf::region
101	)) {	340	)) {
102	no strict 'refs';
103	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	341	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
104	}	342	}
105		343
106	$Event::DIED = sub {	344	$EV::DIED = sub {
107	warn "error in event callback: @_";	345	warn "error in event callback: $@";
108	};	346	};
109		347
110	my %ext_pkg;	348	#############################################################################
111	my @exts;	349
112	my @hook;	350	sub fork_call(&@);
		351	sub get_slot($;$$);
		352
		353	#############################################################################
113		354
114	=head2 UTILITY FUNCTIONS	355	=head2 UTILITY FUNCTIONS
115		356
116	=over 4	357	=over 4
117		358
118	=cut	359	=item dumpval $ref
119		360
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	361	=cut
121		362
		363	sub dumpval {
		364	eval {
		365	local $SIG{__DIE__};
		366	my $d;
		367	if (1) {
		368	$d = new Data::Dumper([$_[0]], ["*var"]);
		369	$d->Terse(1);
		370	$d->Indent(2);
		371	$d->Quotekeys(0);
		372	$d->Useqq(1);
		373	#$d->Bless(...);
		374	$d->Seen($_[1]) if @_ > 1;
		375	$d = $d->Dump();
		376	}
		377	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		378	$d
		379	} || "[unable to dump $_[0]: '$@']";
		380	}
		381
		382	=item $scalar = cf::load_file $path
		383
		384	Loads the given file from path and returns its contents. Croaks on error
		385	and can block.
		386
		387	=cut
		388
		389	sub load_file($) {
		390	0 <= aio_load $_[0], my $data
		391	or Carp::croak "$_[0]: $!";
		392
		393	$data
		394	}
		395
		396	=item $success = cf::replace_file $path, $data, $sync
		397
		398	Atomically replaces the file at the given $path with new $data, and
		399	optionally $sync the data to disk before replacing the file.
		400
		401	=cut
		402
		403	sub replace_file($$;$) {
		404	my ($path, $data, $sync) = @_;
		405
		406	my $lock = cf::lock_acquire ("replace_file:$path");
		407
		408	my $fh = aio_open "$path~", Fcntl::O_WRONLY | Fcntl::O_CREAT | Fcntl::O_TRUNC, 0644
		409	or return;
		410
		411	$data = $data->() if ref $data;
		412
		413	length $data == aio_write $fh, 0, (length $data), $data, 0
		414	or return;
		415
		416	!$sync
		417	or !aio_fsync $fh
		418	or return;
		419
		420	aio_close $fh
		421	and return;
		422
		423	aio_rename "$path~", $path
		424	and return;
		425
		426	if ($sync) {
		427	$path =~ s%/[^/]*$%%;
		428	aio_pathsync $path;
		429	}
		430
		431	1
		432	}
		433
122	=item $ref = cf::from_json $json	434	=item $ref = cf::decode_json $json
123		435
124	Converts a JSON string into the corresponding perl data structure.	436	Converts a JSON string into the corresponding perl data structure.
125		437
126	=cut
127
128	sub from_json($) {
129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
130	JSON::Syck::Load $_[0]
131	}
132
133	=item $json = cf::to_json $ref	438	=item $json = cf::encode_json $ref
134		439
135	Converts a perl data structure into its JSON representation.	440	Converts a perl data structure into its JSON representation.
136		441
137	=cut	442	=cut
138		443
139	sub to_json($) {	444	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	445
141	JSON::Syck::Dump $_[0]	446	sub encode_json($) { $json_coder->encode ($_[0]) }
		447	sub decode_json($) { $json_coder->decode ($_[0]) }
		448
		449	=item $ref = cf::decode_storable $scalar
		450
		451	Same as Coro::Storable::thaw, so blocks.
		452
		453	=cut
		454
		455	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		456
		457	=item $ref = cf::decode_yaml $scalar
		458
		459	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		460
		461	=cut
		462
		463	sub decode_yaml($) {
		464	fork_call { YAML::XS::Load $_[0] } @_
		465	}
		466
		467	=item $scalar = cf::unlzf $scalar
		468
		469	Same as Compress::LZF::compress, but takes server ticks into account, so
		470	blocks.
		471
		472	=cut
		473
		474	sub unlzf($) {
		475	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		476	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		477	Compress::LZF::decompress $_[0]
		478	}
		479
		480	=item cf::post_init { BLOCK }
		481
		482	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		483	but I<before> the server starts ticking again.
		484
		485	The codeblock will have a single boolean argument to indicate whether this
		486	is a reload or not.
		487
		488	=cut
		489
		490	sub post_init(&) {
		491	push @POST_INIT, shift;
		492	}
		493
		494	sub _post_init {
		495	trace "running post_init jobs";
		496
		497	# run them in parallel...
		498
		499	my @join;
		500
		501	while () {
		502	push @join, map &Coro::async ($_, 0), @POST_INIT;
		503	@POST_INIT = ();
		504
		505	@join or last;
		506
		507	(pop @join)->join;
		508	}
		509	}
		510
		511	=item cf::lock_wait $string
		512
		513	Wait until the given lock is available. See cf::lock_acquire.
		514
		515	=item my $lock = cf::lock_acquire $string
		516
		517	Wait until the given lock is available and then acquires it and returns
		518	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		519	for example when the coroutine gets canceled), the lock is automatically
		520	returned.
		521
		522	Locks are *not* recursive, locking from the same coro twice results in a
		523	deadlocked coro.
		524
		525	Lock names should begin with a unique identifier (for example, cf::map::find
		526	uses map_find and cf::map::load uses map_load).
		527
		528	=item $locked = cf::lock_active $string
		529
		530	Return true if the lock is currently active, i.e. somebody has locked it.
		531
		532	=cut
		533
		534	our $LOCKS = new Coro::SemaphoreSet;
		535
		536	sub lock_wait($) {
		537	$LOCKS->wait ($_[0]);
		538	}
		539
		540	sub lock_acquire($) {
		541	$LOCKS->guard ($_[0])
		542	}
		543
		544	sub lock_active($) {
		545	$LOCKS->count ($_[0]) < 1
		546	}
		547
		548	sub freeze_mainloop {
		549	tick_inhibit_inc;
		550
		551	&Guard::guard (\&tick_inhibit_dec);
		552	}
		553
		554	=item cf::periodic $interval, $cb
		555
		556	Like EV::periodic, but randomly selects a starting point so that the actions
		557	get spread over time.
		558
		559	=cut
		560
		561	sub periodic($$) {
		562	my ($interval, $cb) = @_;
		563
		564	my $start = rand List::Util::min 180, $interval;
		565
		566	EV::periodic $start, $interval, 0, $cb
		567	}
		568
		569	=item cf::get_slot $time[, $priority[, $name]]
		570
		571	Allocate $time seconds of blocking CPU time at priority C<$priority>
		572	(default: 0): This call blocks and returns only when you have at least
		573	C<$time> seconds of cpu time till the next tick. The slot is only valid
		574	till the next cede.
		575
		576	Background jobs should use a priority les than zero, interactive jobs
		577	should use 100 or more.
		578
		579	The optional C<$name> can be used to identify the job to run. It might be
		580	used for statistical purposes and should identify the same time-class.
		581
		582	Useful for short background jobs.
		583
		584	=cut
		585
		586	our @SLOT_QUEUE;
		587	our $SLOT_QUEUE;
		588	our $SLOT_DECAY = 0.9;
		589
		590	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		591	$SLOT_QUEUE = Coro::async {
		592	$Coro::current->desc ("timeslot manager");
		593
		594	my $signal = new Coro::Signal;
		595	my $busy;
		596
		597	while () {
		598	next_job:
		599
		600	my $avail = cf::till_tick;
		601
		602	for (0 .. $#SLOT_QUEUE) {
		603	if ($SLOT_QUEUE[$_][0] <= $avail) {
		604	$busy = 0;
		605	my $job = splice @SLOT_QUEUE, $_, 1, ();
		606	$job->[2]->send;
		607	Coro::cede;
		608	goto next_job;
		609	} else {
		610	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		611	}
		612	}
		613
		614	if (@SLOT_QUEUE) {
		615	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		616	$WAIT_FOR_TICK->wait;
		617	} else {
		618	$busy = 0;
		619	Coro::schedule;
		620	}
		621	}
		622	};
		623
		624	sub get_slot($;$$) {
		625	return if tick_inhibit || $Coro::current == $Coro::main;
		626
		627	my ($time, $pri, $name) = @_;
		628
		629	$time = clamp $time, 0.01, $TICK * .6;
		630
		631	my $sig = new Coro::Signal;
		632
		633	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		634	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		635	$SLOT_QUEUE->ready;
		636	$sig->wait;
		637	}
		638
		639	=item cf::async { BLOCK }
		640
		641	Currently the same as Coro::async_pool, meaning you cannot use
		642	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		643	thing you are allowed to do is call C<prio> on it.
		644
		645	=cut
		646
		647	BEGIN { *async = \&Coro::async_pool }
		648
		649	=item cf::sync_job { BLOCK }
		650
		651	The design of Deliantra requires that the main coroutine ($Coro::main)
		652	is always able to handle events or runnable, as Deliantra is only
		653	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		654	acceptable.
		655
		656	If it must be done, put the blocking parts into C<sync_job>. This will run
		657	the given BLOCK in another coroutine while waiting for the result. The
		658	server will be frozen during this time, so the block should either finish
		659	fast or be very important.
		660
		661	=cut
		662
		663	sub sync_job(&) {
		664	my ($job) = @_;
		665
		666	if (in_main) {
		667	my $time = AE::time;
		668
		669	# this is the main coro, too bad, we have to block
		670	# till the operation succeeds, freezing the server :/
		671
		672	#LOG llevError, Carp::longmess "sync job";#d#
		673
		674	my $freeze_guard = freeze_mainloop;
		675
		676	my $busy = 1;
		677	my @res;
		678
		679	(async {
		680	$Coro::current->desc ("sync job coro");
		681	@res = eval { $job->() };
		682	error $@ if $@;
		683	undef $busy;
		684	})->prio (Coro::PRIO_MAX);
		685
		686	while ($busy) {
		687	if (Coro::nready) {
		688	Coro::cede_notself;
		689	} else {
		690	EV::loop EV::LOOP_ONESHOT;
		691	}
		692	}
		693
		694	my $time = AE::time - $time;
		695
		696	$TICK_START += $time; # do not account sync jobs to server load
		697
		698	wantarray ? @res : $res[0]
		699	} else {
		700	# we are in another coroutine, how wonderful, everything just works
		701
		702	$job->()
		703	}
		704	}
		705
		706	=item $coro = cf::async_ext { BLOCK }
		707
		708	Like async, but this coro is automatically being canceled when the
		709	extension calling this is being unloaded.
		710
		711	=cut
		712
		713	sub async_ext(&) {
		714	my $cb = shift;
		715
		716	my $coro = &Coro::async ($cb);
		717
		718	$coro->on_destroy (sub {
		719	delete $EXT_CORO{$coro+0};
		720	});
		721	$EXT_CORO{$coro+0} = $coro;
		722
		723	$coro
		724	}
		725
		726	=item fork_call { }, @args
		727
		728	Executes the given code block with the given arguments in a seperate
		729	process, returning the results. Everything must be serialisable with
		730	Coro::Storable. May, of course, block. Note that the executed sub may
		731	never block itself or use any form of event handling.
		732
		733	=cut
		734
		735	sub post_fork {
		736	reset_signals;
		737	}
		738
		739	sub fork_call(&@) {
		740	my ($cb, @args) = @_;
		741
		742	# we seemingly have to make a local copy of the whole thing,
		743	# otherwise perl prematurely frees the stuff :/
		744	# TODO: investigate and fix (likely this will be rather laborious)
		745
		746	my @res = Coro::Util::fork_eval {
		747	cf::post_fork;
		748	&$cb
		749	} @args;
		750
		751	wantarray ? @res : $res[-1]
		752	}
		753
		754	sub objinfo {
		755	(
		756	"counter value" => cf::object::object_count,
		757	"objects created" => cf::object::create_count,
		758	"objects destroyed" => cf::object::destroy_count,
		759	"freelist size" => cf::object::free_count,
		760	"allocated objects" => cf::object::objects_size,
		761	"active objects" => cf::object::actives_size,
		762	)
		763	}
		764
		765	=item $coin = coin_from_name $name
		766
		767	=cut
		768
		769	our %coin_alias = (
		770	"silver" => "silvercoin",
		771	"silvercoin" => "silvercoin",
		772	"silvercoins" => "silvercoin",
		773	"gold" => "goldcoin",
		774	"goldcoin" => "goldcoin",
		775	"goldcoins" => "goldcoin",
		776	"platinum" => "platinacoin",
		777	"platinumcoin" => "platinacoin",
		778	"platinumcoins" => "platinacoin",
		779	"platina" => "platinacoin",
		780	"platinacoin" => "platinacoin",
		781	"platinacoins" => "platinacoin",
		782	"royalty" => "royalty",
		783	"royalties" => "royalty",
		784	);
		785
		786	sub coin_from_name($) {
		787	$coin_alias{$_[0]}
		788	? cf::arch::find $coin_alias{$_[0]}
		789	: undef
		790	}
		791
		792	=item $value = cf::db_get $family => $key
		793
		794	Returns a single value from the environment database.
		795
		796	=item cf::db_put $family => $key => $value
		797
		798	Stores the given C<$value> in the family. It can currently store binary
		799	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		800
		801	=item $db = cf::db_table "name"
		802
		803	Create and/or open a new database table. The string must not be "db" and must be unique
		804	within each server.
		805
		806	=cut
		807
		808	sub db_table($) {
		809	cf::error "db_get called from main context"
		810	if $Coro::current == $Coro::main;
		811
		812	my ($name) = @_;
		813	my $db = BDB::db_create $DB_ENV;
		814
		815	eval {
		816	$db->set_flags (BDB::CHKSUM);
		817
		818	utf8::encode $name;
		819	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		820	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		821	cf::cleanup "db_open(db): $!" if $!;
		822	};
		823	cf::cleanup "db_open(db): $@" if $@;
		824
		825	$db
		826	}
		827
		828	our $DB;
		829
		830	sub db_init {
		831	$DB ||= db_table "db";
		832	}
		833
		834	sub db_get($$) {
		835	my $key = "$_[0]/$_[1]";
		836
		837	cf::error "db_get called from main context"
		838	if $Coro::current == $Coro::main;
		839
		840	BDB::db_get $DB, undef, $key, my $data;
		841
		842	$! ? ()
		843	: $data
		844	}
		845
		846	sub db_put($$$) {
		847	BDB::dbreq_pri 4;
		848	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		849	}
		850
		851	=item cf::cache $id => [$paths...], $processversion => $process
		852
		853	Generic caching function that returns the value of the resource $id,
		854	caching and regenerating as required.
		855
		856	This function can block.
		857
		858	=cut
		859
		860	sub cache {
		861	my ($id, $src, $processversion, $process) = @_;
		862
		863	my $meta =
		864	join "\x00",
		865	$processversion,
		866	map {
		867	aio_stat $_
		868	and Carp::croak "$_: $!";
		869
		870	($_, (stat _)[7,9])
		871	} @$src;
		872
		873	my $dbmeta = db_get cache => "$id/meta";
		874	if ($dbmeta ne $meta) {
		875	# changed, we may need to process
		876
		877	my @data;
		878	my $md5;
		879
		880	for (0 .. $#$src) {
		881	$data[$_] = load_file $src->[$_];
		882	}
		883
		884	# if processing is expensive, check
		885	# checksum first
		886	if (1) {
		887	$md5 =
		888	join "\x00",
		889	$processversion,
		890	map {
		891	cf::cede_to_tick;
		892	($src->[$_], Digest::MD5::md5_hex $data[$_])
		893	} 0.. $#$src;
		894
		895
		896	my $dbmd5 = db_get cache => "$id/md5";
		897	if ($dbmd5 eq $md5) {
		898	db_put cache => "$id/meta", $meta;
		899
		900	return db_get cache => "$id/data";
		901	}
		902	}
		903
		904	my $t1 = Time::HiRes::time;
		905	my $data = $process->(\@data);
		906	my $t2 = Time::HiRes::time;
		907
		908	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		909
		910	db_put cache => "$id/data", $data;
		911	db_put cache => "$id/md5" , $md5;
		912	db_put cache => "$id/meta", $meta;
		913
		914	return $data;
		915	}
		916
		917	db_get cache => "$id/data"
		918	}
		919
		920	=item cf::datalog type => key => value, ...
		921
		922	Log a datalog packet of the given type with the given key-value pairs.
		923
		924	=cut
		925
		926	sub datalog($@) {
		927	my ($type, %kv) = @_;
		928	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
142	}	929	}
143		930
144	=back	931	=back
145		932
146	=cut	933	=cut
147		934
148	#############################################################################	935	#############################################################################
149		936
150	=head2 ATTACHABLE OBJECTS	937	=head2 ATTACHABLE OBJECTS
151		938
152	Many objects in crossfire are so-called attachable objects. That means you can	939	Many objects in deliantra are so-called attachable objects. That means you can
153	attach callbacks/event handlers (a collection of which is called an "attachment")	940	attach callbacks/event handlers (a collection of which is called an "attachment")
154	to it. All such attachable objects support the following methods.	941	to it. All such attachable objects support the following methods.
155		942
156	In the following description, CLASS can be any of C<global>, C<object>	943	In the following description, CLASS can be any of C<global>, C<object>
157	C<player>, C<client> or C<map> (i.e. the attachable objects in	944	C<player>, C<client> or C<map> (i.e. the attachable objects in
158	crossfire+).	945	Deliantra).
159		946
160	=over 4	947	=over 4
161		948
162	=item $attachable->attach ($attachment, key => $value...)	949	=item $attachable->attach ($attachment, key => $value...)
163		950
…		…
207	=item cf::CLASS::attachment $name, ...	994	=item cf::CLASS::attachment $name, ...
208		995
209	Register an attachment by C<$name> through which attachable objects of the	996	Register an attachment by C<$name> through which attachable objects of the
210	given CLASS can refer to this attachment.	997	given CLASS can refer to this attachment.
211		998
212	Some classes such as crossfire maps and objects can specify attachments	999	Some classes such as deliantra maps and objects can specify attachments
213	that are attached at load/instantiate time, thus the need for a name.	1000	that are attached at load/instantiate time, thus the need for a name.
214		1001
215	These calls expect any number of the following handler/hook descriptions:	1002	These calls expect any number of the following handler/hook descriptions:
216		1003
217	=over 4	1004	=over 4
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	1064	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	1065	our @CB_MAP = ();
279		1066
280	my %attachment;	1067	my %attachment;
281		1068
		1069	sub cf::attachable::thawer_merge {
		1070	# simply override everything except _meta
		1071	local $_[0]{_meta};
		1072	%{$_[0]} = %{$_[1]};
		1073	}
		1074
282	sub _attach_cb($$$$) {	1075	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	1076	my ($registry, $event, $prio, $cb) = @_;
284		1077
285	use sort 'stable';	1078	use sort 'stable';
286		1079
…		…
320	$registry = $CB_TYPE[$object_type] ||= [];	1113	$registry = $CB_TYPE[$object_type] ||= [];
321		1114
322	} elsif ($type eq "subtype") {	1115	} elsif ($type eq "subtype") {
323	defined $object_type or Carp::croak "subtype specified without type";	1116	defined $object_type or Carp::croak "subtype specified without type";
324	my $object_subtype = shift @arg;	1117	my $object_subtype = shift @arg;
325	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	1118	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
326		1119
327	} elsif ($type eq "package") {	1120	} elsif ($type eq "package") {
328	my $pkg = shift @arg;	1121	my $pkg = shift @arg;
329		1122
330	while (my ($name, $id) = each %cb_id) {	1123	while (my ($name, $id) = each %cb_id) {
…		…
335		1128
336	} elsif (exists $cb_id{$type}) {	1129	} elsif (exists $cb_id{$type}) {
337	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;	1130	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
338		1131
339	} elsif (ref $type) {	1132	} elsif (ref $type) {
340	warn "attaching objects not supported, ignoring.\n";	1133	error "attaching objects not supported, ignoring.\n";
341		1134
342	} else {	1135	} else {
343	shift @arg;	1136	shift @arg;
344	warn "attach argument '$type' not supported, ignoring.\n";	1137	error "attach argument '$type' not supported, ignoring.\n";
345	}	1138	}
346	}	1139	}
347	}	1140	}
348		1141
349	sub _object_attach {	1142	sub _object_attach {
…		…
359	_attach $registry, $klass, @attach;	1152	_attach $registry, $klass, @attach;
360	}	1153	}
361		1154
362	$obj->{$name} = \%arg;	1155	$obj->{$name} = \%arg;
363	} else {	1156	} else {
364	warn "object uses attachment '$name' that is not available, postponing.\n";	1157	info "object uses attachment '$name' which is not available, postponing.\n";
365	}	1158	}
366		1159
367	$obj->{_attachment}{$name} = undef;	1160	$obj->{_attachment}{$name} = undef;
368	}	1161	}
369		1162
…		…
371	if (ref $_[0]) {	1164	if (ref $_[0]) {
372	_object_attach @_;	1165	_object_attach @_;
373	} else {	1166	} else {
374	_attach shift->_attach_registry, @_;	1167	_attach shift->_attach_registry, @_;
375	}	1168	}
		1169	_recalc_want;
376	};	1170	};
377		1171
378	# all those should be optimised	1172	# all those should be optimised
379	sub cf::attachable::detach {	1173	sub cf::attachable::detach {
380	my ($obj, $name) = @_;	1174	my ($obj, $name) = @_;
…		…
383	delete $obj->{_attachment}{$name};	1177	delete $obj->{_attachment}{$name};
384	reattach ($obj);	1178	reattach ($obj);
385	} else {	1179	} else {
386	Carp::croak "cannot, currently, detach class attachments";	1180	Carp::croak "cannot, currently, detach class attachments";
387	}	1181	}
		1182	_recalc_want;
388	};	1183	};
389		1184
390	sub cf::attachable::attached {	1185	sub cf::attachable::attached {
391	my ($obj, $name) = @_;	1186	my ($obj, $name) = @_;
392		1187
…		…
407	";	1202	";
408	die if $@;	1203	die if $@;
409	}	1204	}
410		1205
411	our $override;	1206	our $override;
412	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1207	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
413		1208
414	sub override {	1209	sub override {
415	$override = 1;	1210	$override = 1;
416	@invoke_results = ();	1211	@INVOKE_RESULTS = (@_);
417	}	1212	}
418		1213
419	sub do_invoke {	1214	sub do_invoke {
420	my $event = shift;	1215	my $event = shift;
421	my $callbacks = shift;	1216	my $callbacks = shift;
422		1217
423	@invoke_results = ();	1218	@INVOKE_RESULTS = ();
424		1219
425	local $override;	1220	local $override;
426		1221
427	for (@$callbacks) {	1222	for (@$callbacks) {
428	eval { &{$_->[1]} };	1223	eval { &{$_->[1]} };
429		1224
430	if ($@) {	1225	if ($@) {
431	warn "$@";
432	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";	1226	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
433	override;	1227	override;
434	}	1228	}
435		1229
436	return 1 if $override;	1230	return 1 if $override;
437	}	1231	}
438		1232
439	0	1233	0
440	}	1234	}
441		1235
442	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)	1236	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
443		1237
444	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)	1238	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
445		1239
446	Generate an object-specific event with the given arguments.	1240	Generate an object-specific event with the given arguments.
447		1241
448	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be	1242	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
449	removed in future versions), and there is no public API to access override	1243	removed in future versions), and there is no public API to access override
450	results (if you must, access C<@cf::invoke_results> directly).	1244	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
451		1245
452	=back	1246	=back
453		1247
454	=cut	1248	=cut
455		1249
456	#############################################################################	1250	#############################################################################
457	# object support	1251	# object support
		1252
		1253	sub _object_equal($$);
		1254	sub _object_equal($$) {
		1255	my ($a, $b) = @_;
		1256
		1257	return 0 unless (ref $a) eq (ref $b);
		1258
		1259	if ("HASH" eq ref $a) {
		1260	my @ka = keys %$a;
		1261	my @kb = keys %$b;
		1262
		1263	return 0 if @ka != @kb;
		1264
		1265	for (0 .. $#ka) {
		1266	return 0 unless $ka[$_] eq $kb[$_];
		1267	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1268	}
		1269
		1270	} elsif ("ARRAY" eq ref $a) {
		1271
		1272	return 0 if @$a != @$b;
		1273
		1274	for (0 .. $#$a) {
		1275	return 0 unless _object_equal $a->[$_], $b->[$_];
		1276	}
		1277
		1278	} elsif ($a ne $b) {
		1279	return 0;
		1280	}
		1281
		1282	1
		1283	}
		1284
		1285	our $SLOW_MERGES;#d#
		1286	sub _can_merge {
		1287	my ($ob1, $ob2) = @_;
		1288
		1289	++$SLOW_MERGES;#d#
		1290
		1291	# we do the slow way here
		1292	return _object_equal $ob1, $ob2
		1293	}
		1294
		1295	sub reattach {
		1296	# basically do the same as instantiate, without calling instantiate
		1297	my ($obj) = @_;
		1298
		1299	# no longer needed after getting rid of delete_package?
		1300	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1301
		1302	my $registry = $obj->registry;
		1303
		1304	@$registry = ();
		1305
		1306	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		1307
		1308	for my $name (keys %{ $obj->{_attachment} || {} }) {
		1309	if (my $attach = $attachment{$name}) {
		1310	for (@$attach) {
		1311	my ($klass, @attach) = @$_;
		1312	_attach $registry, $klass, @attach;
		1313	}
		1314	} else {
		1315	info "object uses attachment '$name' that is not available, postponing.\n";
		1316	}
		1317	}
		1318	}
458		1319
459	cf::attachable->attach (	1320	cf::attachable->attach (
460	prio => -1000000,	1321	prio => -1000000,
461	on_instantiate => sub {	1322	on_instantiate => sub {
462	my ($obj, $data) = @_;	1323	my ($obj, $data) = @_;
463		1324
464	$data = from_json $data;	1325	$data = decode_json $data;
465		1326
466	for (@$data) {	1327	for (@$data) {
467	my ($name, $args) = @$_;	1328	my ($name, $args) = @$_;
468		1329
469	$obj->attach ($name, %{$args || {} });	1330	$obj->attach ($name, %{$args || {} });
470	}	1331	}
471	},	1332	},
472	on_reattach => sub {	1333	on_reattach => \&reattach,
473	# basically do the same as instantiate, without calling instantiate
474	my ($obj) = @_;
475	my $registry = $obj->registry;
476
477	@$registry = ();
478
479	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
480
481	for my $name (keys %{ $obj->{_attachment} || {} }) {
482	if (my $attach = $attachment{$name}) {
483	for (@$attach) {
484	my ($klass, @attach) = @$_;
485	_attach $registry, $klass, @attach;
486	}
487	} else {
488	warn "object uses attachment '$name' that is not available, postponing.\n";
489	}
490	}
491	},
492	on_clone => sub {	1334	on_clone => sub {
493	my ($src, $dst) = @_;	1335	my ($src, $dst) = @_;
494		1336
495	@{$dst->registry} = @{$src->registry};	1337	@{$dst->registry} = @{$src->registry};
496		1338
…		…
502	);	1344	);
503		1345
504	sub object_freezer_save {	1346	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	1347	my ($filename, $rdata, $objs) = @_;
506		1348
		1349	sync_job {
507	if (length $$rdata) {	1350	if (length $$rdata) {
		1351	utf8::decode (my $decname = $filename);
508	warn sprintf "saving %s (%d,%d)\n",	1352	trace sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	1353	$decname, length $$rdata, scalar @$objs
		1354	if $VERBOSE_IO;
510		1355
511	if (open my $fh, ">:raw", "$filename~") {	1356	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	1357	aio_chmod $fh, SAVE_MODE;
518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	1358	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1359	if ($cf::USE_FSYNC) {
		1360	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;
		1361	aio_fsync $fh;
		1362	}
519	close $fh;	1363	aio_close $fh;
		1364
		1365	if (@$objs) {
		1366	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1367	aio_chmod $fh, SAVE_MODE;
		1368	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1369	aio_write $fh, 0, (length $data), $data, 0;
		1370	if ($cf::USE_FSYNC) {
		1371	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;
		1372	aio_fsync $fh;
		1373	}
		1374	aio_close $fh;
520	rename "$filename.pst~", "$filename.pst";	1375	aio_rename "$filename.pst~", "$filename.pst";
		1376	}
		1377	} else {
		1378	aio_unlink "$filename.pst";
		1379	}
		1380
		1381	aio_rename "$filename~", $filename;
		1382
		1383	$filename =~ s%/[^/]+$%%;
		1384	aio_pathsync $filename if $cf::USE_FSYNC;
521	} else {	1385	} else {
522	unlink "$filename.pst";	1386	error "unable to save objects: $filename~: $!\n";
523	}	1387	}
524
525	rename "$filename~", $filename;
526	} else {	1388	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	1389	aio_unlink $filename;
531	unlink "$filename.pst";	1390	aio_unlink "$filename.pst";
		1391	}
532	}	1392	};
533	}	1393	}
534		1394
535	sub object_freezer_as_string {	1395	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	1396	my ($rdata, $objs) = @_;
537		1397
…		…
541	}	1401	}
542		1402
543	sub object_thawer_load {	1403	sub object_thawer_load {
544	my ($filename) = @_;	1404	my ($filename) = @_;
545		1405
546	local $/;
547
548	my $av;
549
550	#TODO: use sysread etc.
551	if (open my $data, "<:raw:perlio", $filename) {
552	$data = <$data>;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };
555	}
556	return ($data, $av);	1406	my ($data, $av);
557	}
558		1407
559	()	1408	(aio_load $filename, $data) >= 0
		1409	or return;
		1410
		1411	unless (aio_stat "$filename.pst") {
		1412	(aio_load "$filename.pst", $av) >= 0
		1413	or return;
		1414
		1415	my $st = eval { Coro::Storable::thaw $av };
		1416	$av = $st->{objs};
		1417	}
		1418
		1419	utf8::decode (my $decname = $filename);
		1420	trace sprintf "loading %s (%d,%d)\n",
		1421	$decname, length $data, scalar @{$av || []}
		1422	if $VERBOSE_IO;
		1423
		1424	($data, $av)
560	}	1425	}
		1426
		1427	=head2 COMMAND CALLBACKS
		1428
		1429	=over 4
		1430
		1431	=cut
561		1432
562	#############################################################################	1433	#############################################################################
563	# command handling &c	1434	# command handling &c
564		1435
565	=item cf::register_command $name => \&callback($ob,$args);	1436	=item cf::register_command $name => \&callback($ob,$args);
…		…
578	push @{ $COMMAND{$name} }, [$caller, $cb];	1449	push @{ $COMMAND{$name} }, [$caller, $cb];
579	}	1450	}
580		1451
581	=item cf::register_extcmd $name => \&callback($pl,$packet);	1452	=item cf::register_extcmd $name => \&callback($pl,$packet);
582		1453
583	Register a callbackf ro execution when the client sends an extcmd packet.	1454	Register a callback for execution when the client sends an (synchronous)
		1455	extcmd packet. Ext commands will be processed in the order they are
		1456	received by the server, like other user commands. The first argument is
		1457	the logged-in player. Ext commands can only be processed after a player
		1458	has logged in successfully.
584		1459
585	If the callback returns something, it is sent back as if reply was being	1460	If the callback returns something, it is sent back as if reply was being
586	called.	1461	called.
587		1462
		1463	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1464
		1465	Register a callback for execution when the client sends an (asynchronous)
		1466	exticmd packet. Exti commands are processed by the server as soon as they
		1467	are received, i.e. out of order w.r.t. other commands. The first argument
		1468	is a client socket. Exti commands can be received anytime, even before
		1469	log-in.
		1470
		1471	If the callback returns something, it is sent back as if reply was being
		1472	called.
		1473
588	=cut	1474	=cut
589		1475
590	sub register_extcmd {	1476	sub register_extcmd {
591	my ($name, $cb) = @_;	1477	my ($name, $cb) = @_;
592		1478
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	1479	$EXTCMD{$name} = $cb;
597	}	1480	}
		1481
		1482	sub register_exticmd {
		1483	my ($name, $cb) = @_;
		1484
		1485	$EXTICMD{$name} = $cb;
		1486	}
		1487
		1488	use File::Glob ();
598		1489
599	cf::player->attach (	1490	cf::player->attach (
600	on_command => sub {	1491	on_unknown_command => sub {
601	my ($pl, $name, $params) = @_;	1492	my ($pl, $name, $params) = @_;
602		1493
603	my $cb = $COMMAND{$name}	1494	my $cb = $COMMAND{$name}
604	or return;	1495	or return;
605		1496
…		…
610	cf::override;	1501	cf::override;
611	},	1502	},
612	on_extcmd => sub {	1503	on_extcmd => sub {
613	my ($pl, $buf) = @_;	1504	my ($pl, $buf) = @_;
614		1505
615	my $msg = eval { from_json $buf };	1506	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
616		1507
617	if (ref $msg) {	1508	if (ref $msg) {
		1509	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		1510
		1511	my @reply;
		1512
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1513	if (my $cb = $EXTCMD{$type}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	1514	@reply = $cb->($pl, @payload);
620	$pl->ext_reply ($msg->{msgid}, %reply);
621	}
622	}	1515	}
		1516
		1517	$pl->ext_reply ($reply, @reply)
		1518	if $reply;
		1519
623	} else {	1520	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1521	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
625	}	1522	}
626		1523
627	cf::override;	1524	cf::override;
628	},	1525	},
629	);	1526	);
630		1527
631	sub register {	1528	# "readahead" all extensions
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	1529	sub cache_extensions {
638	my ($path) = @_;	1530	my $grp = IO::AIO::aio_group;
639		1531
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1532	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
641	my $base = $1;	1533	for (grep /\.ext$/, @{$_[0]}) {
642	my $pkg = $1;	1534	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
643	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";
645
646	warn "loading '$path' into '$pkg'\n";
647
648	open my $fh, "<:utf8", $path
649	or die "$path: $!";
650
651	my $source =
652	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })
655	. "\n};\n1";
656
657	eval $source
658	or die $@ ? "$path: $@\n"
659	: "extension disabled.\n";
660
661	push @exts, $pkg;
662	$ext_pkg{$base} = $pkg;
663
664	# no strict 'refs';
665	# @{"$pkg\::ISA"} = ext::;
666
667	register $base, $pkg;
668	}
669
670	sub unload_extension {
671	my ($pkg) = @_;
672
673	warn "removing extension $pkg\n";
674
675	# remove hooks
676	#TODO
677	# for my $idx (0 .. $#PLUGIN_EVENT) {
678	# delete $hook[$idx]{$pkg};
679	# }
680
681	# remove commands
682	for my $name (keys %COMMAND) {
683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
684
685	if (@cb) {
686	$COMMAND{$name} = \@cb;
687	} else {
688	delete $COMMAND{$name};
689	}	1535	}
690	}	1536	};
691		1537
692	# remove extcmds	1538	$grp
693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1539	}
694	delete $EXTCMD{$name};
695	}
696		1540
697	if (my $cb = $pkg->can ("unload")) {	1541	sub _ext_cfg_reg($$$$) {
698	eval {	1542	my ($rvar, $varname, $cfgname, $default) = @_;
699	$cb->($pkg);
700	1
701	} or warn "$pkg unloaded, but with errors: $@";
702	}
703		1543
704	Symbol::delete_package $pkg;	1544	$cfgname = lc $varname
		1545	unless length $cfgname;
		1546
		1547	$EXT_CFG{$cfgname} = [$rvar, $default];
		1548
		1549	$$rvar = exists $CFG{$cfgname} ? $CFG{$cfgname} : $default;
705	}	1550	}
706		1551
707	sub load_extensions {	1552	sub load_extensions {
		1553	info "loading extensions...";
		1554
		1555	%EXT_CFG = ();
		1556
		1557	cf::sync_job {
		1558	my %todo;
		1559
708	for my $ext (<$LIBDIR/*.ext>) {	1560	for my $path (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	1561	next unless -r $path;
710	eval {	1562
711	load_extension $ext;	1563	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1564	my $base = $1;
		1565	my $pkg = $1;
		1566	$pkg =~ s/[^[:word:]]/_/g;
		1567	$pkg = "ext::$pkg";
		1568
		1569	open my $fh, "<:utf8", $path
		1570	or die "$path: $!";
		1571
		1572	my $source = do { local $/; <$fh> };
		1573
		1574	my %ext = (
		1575	path => $path,
		1576	base => $base,
		1577	pkg => $pkg,
		1578	);
		1579
		1580	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1581	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1582
		1583	$ext{source} =
		1584	"package $pkg; use common::sense;\n"
		1585	. "#line 1 \"$path\"\n{\n"
		1586	. $source
		1587	. "\n};\n1";
		1588
		1589	$todo{$base} = \%ext;
		1590	}
		1591
		1592	my $pass = 0;
		1593	my %done;
		1594	while (%todo) {
		1595	my $progress;
		1596
		1597	++$pass;
		1598
		1599	ext:
		1600	while (my ($k, $v) = each %todo) {
		1601	for (split /,\s*/, $v->{meta}{depends}) {
		1602	next ext
		1603	unless exists $done{$_};
		1604	}
		1605
		1606	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1607
		1608	my $source = $v->{source};
		1609
		1610	# support "CONF varname :confname = default" pseudo-statements
		1611	$source =~ s{
		1612	^ CONF \s+ ([^\s:=]+) \s* (?:: \s* ([^\s:=]+) \s* )? = ([^\n#]+)
		1613	}{
		1614	"our \$$1; BEGIN { cf::_ext_cfg_reg \\\$$1, q\x00$1\x00, q\x00$2\x00, $3 }";
		1615	}gmxe;
		1616
		1617	my $active = eval $source;
		1618
		1619	if (length $@) {
		1620	error "$v->{path}: $@\n";
		1621
		1622	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1623	if exists $v->{meta}{mandatory};
		1624
		1625	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1626	delete $todo{$k};
		1627	} else {
		1628	$done{$k} = delete $todo{$k};
		1629	push @EXTS, $v->{pkg};
		1630	$progress = 1;
		1631
		1632	info "$v->{base}: extension inactive.\n"
		1633	unless $active;
		1634	}
712	1	1635	}
713	} or warn "$ext not loaded: $@";	1636
		1637	unless ($progress) {
		1638	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1639
		1640	while (my ($k, $v) = each %todo) {
		1641	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1642	if exists $v->{meta}{mandatory};
		1643	}
		1644
		1645	last;
		1646	}
		1647	}
714	}	1648	};
715	}	1649	}
716		1650
717	#############################################################################	1651	#############################################################################
718	# load/save/clean perl data associated with a map
719		1652
720	*cf::mapsupport::on_clean = sub {	1653	=back
		1654
		1655	=head2 CORE EXTENSIONS
		1656
		1657	Functions and methods that extend core deliantra objects.
		1658
		1659	=cut
		1660
		1661	package cf::player;
		1662
		1663	use Coro::AIO;
		1664
		1665	=head3 cf::player
		1666
		1667	=over 4
		1668
		1669	=item cf::player::num_playing
		1670
		1671	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1672
		1673	=cut
		1674
		1675	sub num_playing {
		1676	scalar grep
		1677	$_->ob->map
		1678	&& !$_->hidden
		1679	&& !$_->ob->flag (cf::FLAG_WIZ),
		1680	cf::player::list
		1681	}
		1682
		1683	=item cf::player::find $login
		1684
		1685	Returns the given player object, loading it if necessary (might block).
		1686
		1687	=cut
		1688
		1689	sub playerdir($) {
		1690	"$PLAYERDIR/"
		1691	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1692	}
		1693
		1694	sub path($) {
		1695	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1696
		1697	(playerdir $login) . "/playerdata"
		1698	}
		1699
		1700	sub find_active($) {
		1701	$cf::PLAYER{$_[0]}
		1702	and $cf::PLAYER{$_[0]}->active
		1703	and $cf::PLAYER{$_[0]}
		1704	}
		1705
		1706	sub exists($) {
721	my ($map) = @_;	1707	my ($login) = @_;
722		1708
723	my $path = $map->tmpname;	1709	$cf::PLAYER{$login}
724	defined $path or return;	1710	or !aio_stat path $login
725
726	unlink "$path.pst";
727	};
728
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);
730
731	#############################################################################
732	# load/save perl data associated with player->ob objects
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}	1711	}
737		1712
738	# TODO: compatibility cruft, remove when no longer needed	1713	sub find($) {
		1714	return $cf::PLAYER{$_[0]} || do {
		1715	my $login = $_[0];
		1716
		1717	my $guard = cf::lock_acquire "user_find:$login";
		1718
		1719	$cf::PLAYER{$_[0]} || do {
		1720	# rename old playerfiles to new ones
		1721	#TODO: remove when no longer required
		1722	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1723	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1724	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1725	aio_unlink +(playerdir $login) . "/$login.pl";
		1726
		1727	my $f = new_from_file cf::object::thawer path $login
		1728	or return;
		1729
		1730	my $pl = cf::player::load_pl $f
		1731	or return;
		1732
		1733	local $cf::PLAYER_LOADING{$login} = $pl;
		1734	$f->resolve_delayed_derefs;
		1735	$cf::PLAYER{$login} = $pl
		1736	}
		1737	}
		1738	}
		1739
739	cf::player->attach (	1740	cf::player->attach (
740	on_load => sub {	1741	on_load => sub {
741	my ($pl, $path) = @_;	1742	my ($pl, $path) = @_;
742		1743
743	for my $o (all_objects $pl->ob) {	1744	# restore slots saved in save, below
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1745	my $slots = delete $pl->{_slots};
745	$o->set_ob_key_value ("_perl_data");
746		1746
747	%$o = %{ Storable::thaw pack "H*", $value };	1747	$pl->ob->current_weapon ($slots->[0]);
748	}	1748	$pl->combat_ob ($slots->[1]);
749	}	1749	$pl->ranged_ob ($slots->[2]);
750	},	1750	},
751	);	1751	);
752		1752
753	#############################################################################	1753	sub save($) {
		1754	my ($pl) = @_;
754		1755
755	=head2 CORE EXTENSIONS	1756	return if $pl->{deny_save};
756		1757
757	Functions and methods that extend core crossfire objects.	1758	my $path = path $pl;
		1759	my $guard = cf::lock_acquire "user_save:$path";
758		1760
759	=head3 cf::player	1761	return if $pl->{deny_save};
		1762
		1763	aio_mkdir playerdir $pl, 0770;
		1764	$pl->{last_save} = $cf::RUNTIME;
		1765
		1766	cf::get_slot 0.01;
		1767
		1768	# save slots, to be restored later
		1769	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1770
		1771	$pl->save_pl ($path);
		1772	cf::cede_to_tick;
		1773	}
		1774
		1775	sub new($) {
		1776	my ($login) = @_;
		1777
		1778	my $self = create;
		1779
		1780	$self->ob->name ($login);
		1781	$self->{deny_save} = 1;
		1782
		1783	$cf::PLAYER{$login} = $self;
		1784
		1785	$self
		1786	}
		1787
		1788	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1789
		1790	=cut
		1791
		1792	sub send_msg {
		1793	my $ns = shift->ns
		1794	or return;
		1795	$ns->send_msg (@_);
		1796	}
		1797
		1798	=item $pl->quit_character
		1799
		1800	Nukes the player without looking back. If logged in, the connection will
		1801	be destroyed. May block for a long time.
		1802
		1803	=cut
		1804
		1805	sub quit_character {
		1806	my ($pl) = @_;
		1807
		1808	my $name = $pl->ob->name;
		1809
		1810	$pl->{deny_save} = 1;
		1811	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1812
		1813	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1814	$pl->deactivate;
		1815
		1816	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1817	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1818	ext::highscore::check ($pl->ob);
		1819
		1820	$pl->ns->destroy if $pl->ns;
		1821
		1822	my $path = playerdir $pl;
		1823	my $temp = "$path~$cf::RUNTIME~deleting~";
		1824	aio_rename $path, $temp;
		1825	delete $cf::PLAYER{$pl->ob->name};
		1826	$pl->destroy;
		1827
		1828	my $prefix = qr<^~\Q$name\E/>;
		1829
		1830	# nuke player maps
		1831	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1832
		1833	IO::AIO::aio_rmtree $temp;
		1834	}
		1835
		1836	=item $pl->kick
		1837
		1838	Kicks a player out of the game. This destroys the connection.
		1839
		1840	=cut
		1841
		1842	sub kick {
		1843	my ($pl, $kicker) = @_;
		1844
		1845	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1846	$pl->killer ("kicked");
		1847	$pl->ns->destroy;
		1848	}
		1849
		1850	=item cf::player::list_logins
		1851
		1852	Returns am arrayref of all valid playernames in the system, can take a
		1853	while and may block, so not sync_job-capable, ever.
		1854
		1855	=cut
		1856
		1857	sub list_logins {
		1858	my $dirs = aio_readdir $PLAYERDIR
		1859	or return [];
		1860
		1861	my @logins;
		1862
		1863	for my $login (@$dirs) {
		1864	my $path = path $login;
		1865
		1866	# a .pst is a dead give-away for a valid player
		1867	# if no pst file found, open and chekc for blocked users
		1868	if (aio_stat "$path.pst") {
		1869	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1870	aio_read $fh, 0, 512, my $buf, 0 or next;
		1871	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1872	}
		1873
		1874	utf8::decode $login;
		1875	push @logins, $login;
		1876	}
		1877
		1878	\@logins
		1879	}
		1880
		1881	=item $player->maps
		1882
		1883	=item cf::player::maps $login
		1884
		1885	Returns an arrayref of map paths that are private for this
		1886	player. May block.
		1887
		1888	=cut
		1889
		1890	sub maps($) {
		1891	my ($pl) = @_;
		1892
		1893	$pl = ref $pl ? $pl->ob->name : $pl;
		1894
		1895	my $files = aio_readdir playerdir $pl
		1896	or return;
		1897
		1898	my @paths;
		1899
		1900	for (@$files) {
		1901	utf8::decode $_;
		1902	next if /\.(?:pl|pst)$/;
		1903	next unless /^$PATH_SEP/o;
		1904
		1905	push @paths, cf::map::normalise "~$pl/$_";
		1906	}
		1907
		1908	\@paths
		1909	}
		1910
		1911	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1912
		1913	Expand deliantra pod fragments into protocol xml.
		1914
		1915	=item $player->ext_reply ($msgid, @msg)
		1916
		1917	Sends an ext reply to the player.
		1918
		1919	=cut
		1920
		1921	sub ext_reply($$@) {
		1922	my ($self, $id, @msg) = @_;
		1923
		1924	$self->ns->ext_reply ($id, @msg)
		1925	}
		1926
		1927	=item $player->ext_msg ($type, @msg)
		1928
		1929	Sends an ext event to the client.
		1930
		1931	=cut
		1932
		1933	sub ext_msg($$@) {
		1934	my ($self, $type, @msg) = @_;
		1935
		1936	$self->ns->ext_msg ($type, @msg);
		1937	}
		1938
		1939	=head3 cf::region
760		1940
761	=over 4	1941	=over 4
762		1942
763	=item cf::player::exists $login
764
765	Returns true when the given account exists.
766
767	=cut	1943	=cut
768		1944
769	sub cf::player::exists($) {	1945	package cf::region;
770	cf::player::find $_[0]
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
772	}
773		1946
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1947	=item cf::region::find_by_path $path
775		1948
776	Sends an ext reply to the player.	1949	Tries to decuce the likely region for a map knowing only its path.
777		1950
778	=cut	1951	=cut
779		1952
780	sub cf::player::ext_reply($$$%) {	1953	sub find_by_path($) {
		1954	my ($path) = @_;
		1955
		1956	$path =~ s/^~[^\/]*//; # skip ~login
		1957
		1958	my ($match, $specificity);
		1959
		1960	for my $region (list) {
		1961	if ($region->{match} && $path =~ $region->{match}) {
		1962	($match, $specificity) = ($region, $region->specificity)
		1963	if $region->specificity > $specificity;
		1964	}
		1965	}
		1966
		1967	$match
		1968	}
		1969
		1970	=back
		1971
		1972	=head3 cf::map
		1973
		1974	=over 4
		1975
		1976	=cut
		1977
		1978	package cf::map;
		1979
		1980	use Fcntl;
		1981	use Coro::AIO;
		1982
		1983	use overload
		1984	'""' => \&as_string,
		1985	fallback => 1;
		1986
		1987	our $MAX_RESET = 3600;
		1988	our $DEFAULT_RESET = 3000;
		1989
		1990	sub generate_random_map {
		1991	my ($self, $rmp) = @_;
		1992
		1993	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1994
		1995	$self->_create_random_map ($rmp);
		1996	}
		1997
		1998	=item cf::map->register ($regex, $prio)
		1999
		2000	Register a handler for the map path matching the given regex at the
		2001	givne priority (higher is better, built-in handlers have priority 0, the
		2002	default).
		2003
		2004	=cut
		2005
		2006	sub register {
		2007	my (undef, $regex, $prio) = @_;
		2008	my $pkg = caller;
		2009
		2010	push @{"$pkg\::ISA"}, __PACKAGE__;
		2011
		2012	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		2013	}
		2014
		2015	# also paths starting with '/'
		2016	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		2017
		2018	sub thawer_merge {
781	my ($self, $id, %msg) = @_;	2019	my ($self, $merge) = @_;
782		2020
783	$msg{msgid} = $id;	2021	# we have to keep some variables in memory intact
		2022	local $self->{path};
		2023	local $self->{load_path};
784		2024
785	$self->send ("ext " . to_json \%msg);	2025	$self->SUPER::thawer_merge ($merge);
786	}	2026	}
		2027
		2028	sub normalise {
		2029	my ($path, $base) = @_;
		2030
		2031	$path = "$path"; # make sure it's a string
		2032
		2033	$path =~ s/\.map$//;
		2034
		2035	# map plan:
		2036	#
		2037	# /! non-realised random map exit (special hack!)
		2038	# {... are special paths that are not being touched
		2039	# ?xxx/... are special absolute paths
		2040	# ?random/... random maps
		2041	# /... normal maps
		2042	# ~user/... per-player map of a specific user
		2043
		2044	$path =~ s/$PATH_SEP/\//go;
		2045
		2046	# treat it as relative path if it starts with
		2047	# something that looks reasonable
		2048	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		2049	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		2050
		2051	$base =~ s{[^/]+/?$}{};
		2052	$path = "$base/$path";
		2053	}
		2054
		2055	for ($path) {
		2056	redo if s{/\.?/}{/};
		2057	redo if s{/[^/]+/\.\./}{/};
		2058	}
		2059
		2060	$path
		2061	}
		2062
		2063	sub new_from_path {
		2064	my (undef, $path, $base) = @_;
		2065
		2066	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		2067
		2068	$path = normalise $path, $base;
		2069
		2070	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		2071	if ($path =~ $EXT_MAP{$pkg}[1]) {
		2072	my $self = bless cf::map::new, $pkg;
		2073	$self->{path} = $path; $self->path ($path);
		2074	$self->init; # pass $1 etc.
		2075	return $self;
		2076	}
		2077	}
		2078
		2079	Carp::cluck "unable to resolve path '$path' (base '$base')";
		2080	()
		2081	}
		2082
		2083	# may re-bless or do other evil things
		2084	sub init {
		2085	my ($self) = @_;
		2086
		2087	$self
		2088	}
		2089
		2090	sub as_string {
		2091	my ($self) = @_;
		2092
		2093	"$self->{path}"
		2094	}
		2095
		2096	# the displayed name, this is a one way mapping
		2097	sub visible_name {
		2098	&as_string
		2099	}
		2100
		2101	# the original (read-only) location
		2102	sub load_path {
		2103	my ($self) = @_;
		2104
		2105	"$MAPDIR/$self->{path}.map"
		2106	}
		2107
		2108	# the temporary/swap location
		2109	sub save_path {
		2110	my ($self) = @_;
		2111
		2112	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2113	"$TMPDIR/$path.map"
		2114	}
		2115
		2116	# the unique path, undef == no special unique path
		2117	sub uniq_path {
		2118	my ($self) = @_;
		2119
		2120	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2121	"$UNIQUEDIR/$path"
		2122	}
		2123
		2124	sub decay_objects {
		2125	my ($self) = @_;
		2126
		2127	return if $self->{deny_reset};
		2128
		2129	$self->do_decay_objects;
		2130	}
		2131
		2132	sub unlink_save {
		2133	my ($self) = @_;
		2134
		2135	utf8::encode (my $save = $self->save_path);
		2136	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2137	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2138	}
		2139
		2140	sub load_header_from($) {
		2141	my ($self, $path) = @_;
		2142
		2143	utf8::encode $path;
		2144	my $f = new_from_file cf::object::thawer $path
		2145	or return;
		2146
		2147	$self->_load_header ($f)
		2148	or return;
		2149
		2150	local $MAP_LOADING{$self->{path}} = $self;
		2151	$f->resolve_delayed_derefs;
		2152
		2153	$self->{load_path} = $path;
		2154
		2155	1
		2156	}
		2157
		2158	# used to laod the header of an original map
		2159	sub load_header_orig {
		2160	my ($self) = @_;
		2161
		2162	$self->load_header_from ($self->load_path)
		2163	}
		2164
		2165	# used to laod the header of an instantiated map
		2166	sub load_header_temp {
		2167	my ($self) = @_;
		2168
		2169	$self->load_header_from ($self->save_path)
		2170	}
		2171
		2172	# called after loading the header from an instantiated map
		2173	sub prepare_temp {
		2174	my ($self) = @_;
		2175
		2176	$self->last_access ((delete $self->{last_access})
		2177	|| $cf::RUNTIME); #d#
		2178	# safety
		2179	$self->{instantiate_time} = $cf::RUNTIME
		2180	if $self->{instantiate_time} > $cf::RUNTIME;
		2181	}
		2182
		2183	# called after loading the header from an original map
		2184	sub prepare_orig {
		2185	my ($self) = @_;
		2186
		2187	$self->{load_original} = 1;
		2188	$self->{instantiate_time} = $cf::RUNTIME;
		2189	$self->last_access ($cf::RUNTIME);
		2190	$self->instantiate;
		2191	}
		2192
		2193	sub load_header {
		2194	my ($self) = @_;
		2195
		2196	if ($self->load_header_temp) {
		2197	$self->prepare_temp;
		2198	} else {
		2199	$self->load_header_orig
		2200	or return;
		2201	$self->prepare_orig;
		2202	}
		2203
		2204	$self->{deny_reset} = 1
		2205	if $self->no_reset;
		2206
		2207	$self->default_region (cf::region::find_by_path $self->{path})
		2208	unless $self->default_region;
		2209
		2210	1
		2211	}
		2212
		2213	sub find;
		2214	sub find {
		2215	my ($path, $origin) = @_;
		2216
		2217	cf::cede_to_tick;
		2218
		2219	$path = normalise $path, $origin;
		2220
		2221	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2222	my $guard2 = cf::lock_acquire "map_find:$path";
		2223
		2224	$cf::MAP{$path} || do {
		2225	my $map = new_from_path cf::map $path
		2226	or return;
		2227
		2228	$map->{last_save} = $cf::RUNTIME;
		2229
		2230	$map->load_header
		2231	or return;
		2232
		2233	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2234	# doing this can freeze the server in a sync job, obviously
		2235	#$cf::WAIT_FOR_TICK->wait;
		2236	undef $guard2;
		2237	undef $guard1;
		2238	$map->reset;
		2239	return find $path;
		2240	}
		2241
		2242	$cf::MAP{$path} = $map
		2243	}
		2244	}
		2245
		2246	sub pre_load { }
		2247	#sub post_load { } # XS
		2248
		2249	sub load {
		2250	my ($self) = @_;
		2251
		2252	local $self->{deny_reset} = 1; # loading can take a long time
		2253
		2254	my $path = $self->{path};
		2255
		2256	{
		2257	my $guard = cf::lock_acquire "map_data:$path";
		2258
		2259	return unless $self->valid;
		2260	return unless $self->state == cf::MAP_SWAPPED;
		2261
		2262	$self->alloc;
		2263
		2264	$self->pre_load;
		2265	cf::cede_to_tick;
		2266
		2267	if (exists $self->{load_path}) {
		2268	my $f = new_from_file cf::object::thawer $self->{load_path};
		2269	$f->skip_block;
		2270	$self->_load_objects ($f)
		2271	or return;
		2272
		2273	$self->post_load_original
		2274	if delete $self->{load_original};
		2275
		2276	if (my $uniq = $self->uniq_path) {
		2277	utf8::encode $uniq;
		2278	unless (aio_stat $uniq) {
		2279	if (my $f = new_from_file cf::object::thawer $uniq) {
		2280	$self->clear_unique_items;
		2281	$self->_load_objects ($f);
		2282	$f->resolve_delayed_derefs;
		2283	}
		2284	}
		2285	}
		2286
		2287	$f->resolve_delayed_derefs;
		2288	} else {
		2289	$self->post_load_original
		2290	if delete $self->{load_original};
		2291	}
		2292
		2293	$self->state (cf::MAP_INACTIVE);
		2294
		2295	cf::cede_to_tick;
		2296	# now do the right thing for maps
		2297	$self->link_multipart_objects;
		2298	$self->difficulty ($self->estimate_difficulty)
		2299	unless $self->difficulty;
		2300	cf::cede_to_tick;
		2301
		2302	unless ($self->{deny_activate}) {
		2303	$self->decay_objects;
		2304	$self->fix_auto_apply;
		2305	$self->update_buttons;
		2306	cf::cede_to_tick;
		2307	#$self->activate; # no longer activate maps automatically
		2308	}
		2309
		2310	$self->{last_save} = $cf::RUNTIME;
		2311	$self->last_access ($cf::RUNTIME);
		2312	}
		2313
		2314	$self->post_load;
		2315
		2316	1
		2317	}
		2318
		2319	# customize the map for a given player, i.e.
		2320	# return the _real_ map. used by e.g. per-player
		2321	# maps to change the path to ~playername/mappath
		2322	sub customise_for {
		2323	my ($self, $ob) = @_;
		2324
		2325	return find "~" . $ob->name . "/" . $self->{path}
		2326	if $self->per_player;
		2327
		2328	# return find "?party/" . $ob->name . "/" . $self->{path}
		2329	# if $self->per_party;
		2330
		2331	$self
		2332	}
		2333
		2334	sub find_sync {
		2335	my ($path, $origin) = @_;
		2336
		2337	# it's a bug to call this from the main context
		2338	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2339	if $Coro::current == $Coro::main;
		2340
		2341	find $path, $origin
		2342	}
		2343
		2344	sub do_load_sync {
		2345	my ($map) = @_;
		2346
		2347	# it's a bug to call this from the main context
		2348	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2349	if $Coro::current == $Coro::main;
		2350
		2351	$map->load;
		2352	}
		2353
		2354	our %MAP_PREFETCH;
		2355	our $MAP_PREFETCHER = undef;
		2356
		2357	sub find_async {
		2358	my ($path, $origin, $load) = @_;
		2359
		2360	$path = normalise $path, $origin;
		2361
		2362	if (my $map = $cf::MAP{$path}) {
		2363	return $map if !$load || $map->linkable;
		2364	}
		2365
		2366	$MAP_PREFETCH{$path} |= $load;
		2367
		2368	$MAP_PREFETCHER ||= cf::async {
		2369	$Coro::current->{desc} = "map prefetcher";
		2370
		2371	while (%MAP_PREFETCH) {
		2372	while (my ($k, $v) = each %MAP_PREFETCH) {
		2373	if (my $map = find $k) {
		2374	$map->load if $v;
		2375	}
		2376
		2377	delete $MAP_PREFETCH{$k};
		2378	}
		2379	}
		2380	undef $MAP_PREFETCHER;
		2381	};
		2382	$MAP_PREFETCHER->prio (6);
		2383
		2384	()
		2385	}
		2386
		2387	# common code, used by both ->save and ->swapout
		2388	sub _save {
		2389	my ($self) = @_;
		2390
		2391	$self->{last_save} = $cf::RUNTIME;
		2392
		2393	return unless $self->dirty;
		2394
		2395	my $save = $self->save_path; utf8::encode $save;
		2396	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2397
		2398	$self->{load_path} = $save;
		2399
		2400	return if $self->{deny_save};
		2401
		2402	local $self->{last_access} = $self->last_access;#d#
		2403
		2404	cf::async {
		2405	$Coro::current->{desc} = "map player save";
		2406	$_->contr->save for $self->players;
		2407	};
		2408
		2409	cf::get_slot 0.02;
		2410
		2411	if ($uniq) {
		2412	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2413	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2414	} else {
		2415	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2416	}
		2417	}
		2418
		2419	sub save {
		2420	my ($self) = @_;
		2421
		2422	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2423
		2424	$self->_save;
		2425	}
		2426
		2427	sub swap_out {
		2428	my ($self) = @_;
		2429
		2430	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2431
		2432	return if !$self->linkable;
		2433	return if $self->{deny_save};
		2434	return if $self->players;
		2435
		2436	# first deactivate the map and "unlink" it from the core
		2437	$self->deactivate;
		2438	$_->clear_links_to ($self) for values %cf::MAP;
		2439	$self->state (cf::MAP_SWAPPED);
		2440
		2441	# then atomically save
		2442	$self->_save;
		2443
		2444	# then free the map
		2445	$self->clear;
		2446	}
		2447
		2448	sub reset_at {
		2449	my ($self) = @_;
		2450
		2451	# TODO: safety, remove and allow resettable per-player maps
		2452	return 1e99 if $self->{deny_reset};
		2453
		2454	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2455	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2456
		2457	$time + $to
		2458	}
		2459
		2460	sub should_reset {
		2461	my ($self) = @_;
		2462
		2463	$self->reset_at <= $cf::RUNTIME
		2464	}
		2465
		2466	sub reset {
		2467	my ($self) = @_;
		2468
		2469	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2470
		2471	return if $self->players;
		2472
		2473	cf::trace "resetting map ", $self->path, "\n";
		2474
		2475	$self->state (cf::MAP_SWAPPED);
		2476
		2477	# need to save uniques path
		2478	unless ($self->{deny_save}) {
		2479	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2480
		2481	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2482	if $uniq;
		2483	}
		2484
		2485	delete $cf::MAP{$self->path};
		2486
		2487	$self->deactivate;
		2488	$_->clear_links_to ($self) for values %cf::MAP;
		2489	$self->clear;
		2490
		2491	$self->unlink_save;
		2492	$self->destroy;
		2493	}
		2494
		2495	my $nuke_counter = "aaaa";
		2496
		2497	sub nuke {
		2498	my ($self) = @_;
		2499
		2500	{
		2501	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2502
		2503	delete $cf::MAP{$self->path};
		2504
		2505	$self->unlink_save;
		2506
		2507	bless $self, "cf::map::wrap";
		2508	delete $self->{deny_reset};
		2509	$self->{deny_save} = 1;
		2510	$self->reset_timeout (1);
		2511	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2512
		2513	$cf::MAP{$self->path} = $self;
		2514	}
		2515
		2516	$self->reset; # polite request, might not happen
		2517	}
		2518
		2519	=item $maps = cf::map::tmp_maps
		2520
		2521	Returns an arrayref with all map paths of currently instantiated and saved
		2522	maps. May block.
		2523
		2524	=cut
		2525
		2526	sub tmp_maps() {
		2527	[
		2528	map {
		2529	utf8::decode $_;
		2530	/\.map$/
		2531	? normalise $_
		2532	: ()
		2533	} @{ aio_readdir $TMPDIR or [] }
		2534	]
		2535	}
		2536
		2537	=item $maps = cf::map::random_maps
		2538
		2539	Returns an arrayref with all map paths of currently instantiated and saved
		2540	random maps. May block.
		2541
		2542	=cut
		2543
		2544	sub random_maps() {
		2545	[
		2546	map {
		2547	utf8::decode $_;
		2548	/\.map$/
		2549	? normalise "?random/$_"
		2550	: ()
		2551	} @{ aio_readdir $RANDOMDIR or [] }
		2552	]
		2553	}
		2554
		2555	=item cf::map::unique_maps
		2556
		2557	Returns an arrayref of paths of all shared maps that have
		2558	instantiated unique items. May block.
		2559
		2560	=cut
		2561
		2562	sub unique_maps() {
		2563	[
		2564	map {
		2565	utf8::decode $_;
		2566	s/\.map$//; # TODO future compatibility hack
		2567	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2568	? ()
		2569	: normalise $_
		2570	} @{ aio_readdir $UNIQUEDIR or [] }
		2571	]
		2572	}
		2573
		2574	=item cf::map::static_maps
		2575
		2576	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2577	file in the shared directory excluding F</styles> and F</editor>). May
		2578	block.
		2579
		2580	=cut
		2581
		2582	sub static_maps() {
		2583	my @dirs = "";
		2584	my @maps;
		2585
		2586	while (@dirs) {
		2587	my $dir = shift @dirs;
		2588
		2589	next if $dir eq "/styles" || $dir eq "/editor";
		2590
		2591	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2592	or return;
		2593
		2594	for (@$files) {
		2595	s/\.map$// or next;
		2596	utf8::decode $_;
		2597	push @maps, "$dir/$_";
		2598	}
		2599
		2600	push @dirs, map "$dir/$_", @$dirs;
		2601	}
		2602
		2603	\@maps
		2604	}
		2605
		2606	=back
		2607
		2608	=head3 cf::object
		2609
		2610	=cut
		2611
		2612	package cf::object;
		2613
		2614	=over 4
		2615
		2616	=item $ob->inv_recursive
		2617
		2618	Returns the inventory of the object I<and> their inventories, recursively,
		2619	but I<not> the object itself.
		2620
		2621	=cut
		2622
		2623	sub inv_recursive_;
		2624	sub inv_recursive_ {
		2625	map { $_, inv_recursive_ $_->inv } @_
		2626	}
		2627
		2628	sub inv_recursive {
		2629	inv_recursive_ inv $_[0]
		2630	}
		2631
		2632	=item $ref = $ob->ref
		2633
		2634	Creates and returns a persistent reference to an object that can be stored as a string.
		2635
		2636	=item $ob = cf::object::deref ($refstring)
		2637
		2638	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2639	even if the object actually exists. May block.
		2640
		2641	=cut
		2642
		2643	sub deref {
		2644	my ($ref) = @_;
		2645
		2646	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2647	my ($uuid, $name) = ($1, $2);
		2648	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2649	or return;
		2650	$pl->ob->uuid eq $uuid
		2651	or return;
		2652
		2653	$pl->ob
		2654	} else {
		2655	warn "$ref: cannot resolve object reference\n";
		2656	undef
		2657	}
		2658	}
		2659
		2660	package cf;
787		2661
788	=back	2662	=back
789		2663
790	=head3 cf::object::player	2664	=head3 cf::object::player
791		2665
…		…
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2670	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	2671	can be C<undef>. Does the right thing when the player is currently in a
798	dialogue with the given NPC character.	2672	dialogue with the given NPC character.
799		2673
800	=cut	2674	=cut
		2675
		2676	our $SAY_CHANNEL = {
		2677	id => "say",
		2678	title => "Map",
		2679	reply => "say ",
		2680	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2681	};
		2682
		2683	our $CHAT_CHANNEL = {
		2684	id => "chat",
		2685	title => "Chat",
		2686	reply => "chat ",
		2687	tooltip => "Player chat and shouts, global to the server.",
		2688	};
801		2689
802	# rough implementation of a future "reply" method that works	2690	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	2691	# with dialog boxes.
804	#TODO: the first argument must go, split into a $npc->reply_to ( method	2692	#TODO: the first argument must go, split into a $npc->reply_to ( method
805	sub cf::object::player::reply($$$;$) {	2693	sub cf::object::player::reply($$$;$) {
…		…
807		2695
808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2696	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
809		2697
810	if ($self->{record_replies}) {	2698	if ($self->{record_replies}) {
811	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2699	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2700
812	} else {	2701	} else {
		2702	my $pl = $self->contr;
		2703
		2704	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2705	my $dialog = $pl->{npc_dialog};
		2706	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2707
		2708	} else {
813	$msg = $npc->name . " says: $msg" if $npc;	2709	$msg = $npc->name . " says: $msg" if $npc;
814	$self->message ($msg, $flags);	2710	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2711	}
815	}	2712	}
		2713	}
		2714
		2715	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2716
		2717	=cut
		2718
		2719	sub cf::object::send_msg {
		2720	my $pl = shift->contr
		2721	or return;
		2722	$pl->send_msg (@_);
816	}	2723	}
817		2724
818	=item $player_object->may ("access")	2725	=item $player_object->may ("access")
819		2726
820	Returns wether the given player is authorized to access resource "access"	2727	Returns wether the given player is authorized to access resource "access"
…		…
829	(ref $cf::CFG{"may_$access"}	2736	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2737	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	2738	: $cf::CFG{"may_$access"})
832	}	2739	}
833		2740
		2741	=item $player_object->enter_link
		2742
		2743	Freezes the player and moves him/her to a special map (C<{link}>).
		2744
		2745	The player should be reasonably safe there for short amounts of time (e.g.
		2746	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2747	though, as the player cannot control the character while it is on the link
		2748	map.
		2749
		2750	Will never block.
		2751
		2752	=item $player_object->leave_link ($map, $x, $y)
		2753
		2754	Moves the player out of the special C<{link}> map onto the specified
		2755	map. If the map is not valid (or omitted), the player will be moved back
		2756	to the location he/she was before the call to C<enter_link>, or, if that
		2757	fails, to the emergency map position.
		2758
		2759	Might block.
		2760
		2761	=cut
		2762
		2763	sub link_map {
		2764	unless ($LINK_MAP) {
		2765	$LINK_MAP = cf::map::find "{link}"
		2766	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2767	$LINK_MAP->load;
		2768	}
		2769
		2770	$LINK_MAP
		2771	}
		2772
		2773	sub cf::object::player::enter_link {
		2774	my ($self) = @_;
		2775
		2776	$self->deactivate_recursive;
		2777
		2778	++$self->{_link_recursion};
		2779
		2780	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2781
		2782	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2783	if $self->map && $self->map->{path} ne "{link}";
		2784
		2785	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2786	}
		2787
		2788	sub cf::object::player::leave_link {
		2789	my ($self, $map, $x, $y) = @_;
		2790
		2791	return unless $self->contr->active;
		2792
		2793	my $link_pos = delete $self->{_link_pos};
		2794
		2795	unless ($map) {
		2796	# restore original map position
		2797	($map, $x, $y) = @{ $link_pos || [] };
		2798	$map = cf::map::find $map;
		2799
		2800	unless ($map) {
		2801	($map, $x, $y) = @$EMERGENCY_POSITION;
		2802	$map = cf::map::find $map
		2803	or die "FATAL: cannot load emergency map\n";
		2804	}
		2805	}
		2806
		2807	($x, $y) = (-1, -1)
		2808	unless (defined $x) && (defined $y);
		2809
		2810	# use -1 or undef as default coordinates, not 0, 0
		2811	($x, $y) = ($map->enter_x, $map->enter_y)
		2812	if $x <= 0 && $y <= 0;
		2813
		2814	$map->load;
		2815
		2816	return unless $self->contr->active;
		2817
		2818	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2819	if ($self->enter_map ($map, $x, $y)) {
		2820	# entering was successful
		2821	delete $self->{_link_recursion};
		2822	# only activate afterwards, to support waiting in hooks
		2823	$self->activate_recursive;
		2824	}
		2825
		2826	}
		2827
		2828	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2829
		2830	Moves the player to the given map-path and coordinates by first freezing
		2831	her, loading and preparing them map, calling the provided $check callback
		2832	that has to return the map if sucecssful, and then unfreezes the player on
		2833	the new (success) or old (failed) map position. In either case, $done will
		2834	be called at the end of this process.
		2835
		2836	Note that $check will be called with a potentially non-loaded map, so if
		2837	it needs a loaded map it has to call C<< ->load >>.
		2838
		2839	=cut
		2840
		2841	our $GOTOGEN;
		2842
		2843	sub cf::object::player::goto {
		2844	my ($self, $path, $x, $y, $check, $done) = @_;
		2845
		2846	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2847	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2848	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2849	($path, $x, $y) = @$EMERGENCY_POSITION;
		2850	}
		2851
		2852	# do generation counting so two concurrent goto's will be executed in-order
		2853	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2854
		2855	$self->enter_link;
		2856
		2857	(async {
		2858	$Coro::current->{desc} = "player::goto $path $x $y";
		2859
		2860	# *tag paths override both path and x|y
		2861	if ($path =~ /^\*(.*)$/) {
		2862	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2863	my $ob = $obs[rand @obs];
		2864
		2865	# see if we actually can go there
		2866	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2867	$ob = $obs[rand @obs];
		2868	} else {
		2869	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2870	}
		2871	# else put us there anyways for now #d#
		2872
		2873	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2874	} else {
		2875	($path, $x, $y) = (undef, undef, undef);
		2876	}
		2877	}
		2878
		2879	my $map = eval {
		2880	my $map = defined $path ? cf::map::find $path, $self->map : undef;
		2881
		2882	if ($map) {
		2883	$map = $map->customise_for ($self);
		2884	$map = $check->($map, $x, $y, $self) if $check && $map;
		2885	} else {
		2886	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2887	}
		2888
		2889	$map
		2890	};
		2891
		2892	if ($@) {
		2893	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2894	LOG llevError | logBacktrace, Carp::longmess $@;
		2895	}
		2896
		2897	if ($gen == $self->{_goto_generation}) {
		2898	delete $self->{_goto_generation};
		2899	$self->leave_link ($map, $x, $y);
		2900	}
		2901
		2902	$done->($self) if $done;
		2903	})->prio (1);
		2904	}
		2905
		2906	=item $player_object->enter_exit ($exit_object)
		2907
		2908	=cut
		2909
		2910	sub parse_random_map_params {
		2911	my ($spec) = @_;
		2912
		2913	my $rmp = { # defaults
		2914	xsize => (cf::rndm 15, 40),
		2915	ysize => (cf::rndm 15, 40),
		2916	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2917	#layout => string,
		2918	};
		2919
		2920	for (split /\n/, $spec) {
		2921	my ($k, $v) = split /\s+/, $_, 2;
		2922
		2923	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2924	}
		2925
		2926	$rmp
		2927	}
		2928
		2929	sub prepare_random_map {
		2930	my ($exit) = @_;
		2931
		2932	# all this does is basically replace the /! path by
		2933	# a new random map path (?random/...) with a seed
		2934	# that depends on the exit object
		2935
		2936	my $rmp = parse_random_map_params $exit->msg;
		2937
		2938	if ($exit->map) {
		2939	$rmp->{region} = $exit->region->name;
		2940	$rmp->{origin_map} = $exit->map->path;
		2941	$rmp->{origin_x} = $exit->x;
		2942	$rmp->{origin_y} = $exit->y;
		2943
		2944	$exit->map->touch;
		2945	}
		2946
		2947	$rmp->{random_seed} ||= $exit->random_seed;
		2948
		2949	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2950	my $md5 = Digest::MD5::md5_hex $data;
		2951	my $meta = "$RANDOMDIR/$md5.meta";
		2952
		2953	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2954	aio_write $fh, 0, (length $data), $data, 0;
		2955	undef $fh;
		2956	aio_rename "$meta~", $meta;
		2957
		2958	my $slaying = "?random/$md5";
		2959
		2960	if ($exit->valid) {
		2961	$exit->slaying ("?random/$md5");
		2962	$exit->msg (undef);
		2963	}
		2964	}
		2965	}
		2966
		2967	sub cf::object::player::enter_exit {
		2968	my ($self, $exit) = @_;
		2969
		2970	return unless $self->type == cf::PLAYER;
		2971
		2972	$self->enter_link;
		2973
		2974	(async {
		2975	$Coro::current->{desc} = "enter_exit";
		2976
		2977	unless (eval {
		2978	$self->deactivate_recursive; # just to be sure
		2979
		2980	my $map = cf::map::normalise $exit->slaying, $exit->map;
		2981	my $x = $exit->stats->hp;
		2982	my $y = $exit->stats->sp;
		2983
		2984	# special map handling
		2985	my $slaying = $exit->slaying;
		2986
		2987	# special map handling
		2988	if ($slaying eq "/!") {
		2989	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2990
		2991	prepare_random_map $exit
		2992	if $exit->slaying eq "/!"; # need to re-check after getting the lock
		2993
		2994	$map = $exit->slaying;
		2995
		2996	} elsif ($slaying eq '!up') {
		2997	$map = $exit->map->tile_path (cf::TILE_UP);
		2998	$x = $exit->x;
		2999	$y = $exit->y;
		3000
		3001	} elsif ($slaying eq '!down') {
		3002	$map = $exit->map->tile_path (cf::TILE_DOWN);
		3003	$x = $exit->x;
		3004	$y = $exit->y;
		3005	}
		3006
		3007	$self->goto ($map, $x, $y);
		3008
		3009	# if exit is damned, update players death & WoR home-position
		3010	$self->contr->savebed ($map, $x, $y)
		3011	if $exit->flag (cf::FLAG_DAMNED);
		3012
		3013	1
		3014	}) {
		3015	$self->message ("Something went wrong deep within the deliantra server. "
		3016	. "I'll try to bring you back to the map you were before. "
		3017	. "Please report this to the dungeon master!",
		3018	cf::NDI_UNIQUE | cf::NDI_RED);
		3019
		3020	error "ERROR in enter_exit: $@";
		3021	$self->leave_link;
		3022	}
		3023	})->prio (1);
		3024	}
		3025
834	=head3 cf::client	3026	=head3 cf::client
835		3027
836	=over 4	3028	=over 4
837		3029
838	=item $client->send_drawinfo ($text, $flags)	3030	=item $client->send_drawinfo ($text, $flags)
…		…
844		3036
845	sub cf::client::send_drawinfo {	3037	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	3038	my ($self, $text, $flags) = @_;
847		3039
848	utf8::encode $text;	3040	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	3041	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	3042	}
851		3043
		3044	=item $client->send_big_packet ($pkt)
		3045
		3046	Like C<send_packet>, but tries to compress large packets, and fragments
		3047	them as required.
		3048
		3049	=cut
		3050
		3051	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		3052
		3053	sub cf::client::send_big_packet {
		3054	my ($self, $pkt) = @_;
		3055
		3056	# try lzf for large packets
		3057	$pkt = "lzf " . Compress::LZF::compress $pkt
		3058	if 1024 <= length $pkt and $self->{can_lzf};
		3059
		3060	# split very large packets
		3061	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		3062	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		3063	$pkt = "frag";
		3064	}
		3065
		3066	$self->send_packet ($pkt);
		3067	}
		3068
		3069	=item $client->send_msg ($channel, $msg, $color, [extra...])
		3070
		3071	Send a drawinfo or msg packet to the client, formatting the msg for the
		3072	client if neccessary. C<$type> should be a string identifying the type of
		3073	the message, with C<log> being the default. If C<$color> is negative, suppress
		3074	the message unless the client supports the msg packet.
		3075
		3076	=cut
		3077
		3078	# non-persistent channels (usually the info channel)
		3079	our %CHANNEL = (
		3080	"c/motd" => {
		3081	id => "infobox",
		3082	title => "MOTD",
		3083	reply => undef,
		3084	tooltip => "The message of the day",
		3085	},
		3086	"c/identify" => {
		3087	id => "infobox",
		3088	title => "Identify",
		3089	reply => undef,
		3090	tooltip => "Items recently identified",
		3091	},
		3092	"c/examine" => {
		3093	id => "infobox",
		3094	title => "Examine",
		3095	reply => undef,
		3096	tooltip => "Signs and other items you examined",
		3097	},
		3098	"c/shopinfo" => {
		3099	id => "infobox",
		3100	title => "Shop Info",
		3101	reply => undef,
		3102	tooltip => "What your bargaining skill tells you about the shop",
		3103	},
		3104	"c/book" => {
		3105	id => "infobox",
		3106	title => "Book",
		3107	reply => undef,
		3108	tooltip => "The contents of a note or book",
		3109	},
		3110	"c/lookat" => {
		3111	id => "infobox",
		3112	title => "Look",
		3113	reply => undef,
		3114	tooltip => "What you saw there",
		3115	},
		3116	"c/who" => {
		3117	id => "infobox",
		3118	title => "Players",
		3119	reply => undef,
		3120	tooltip => "Shows players who are currently online",
		3121	},
		3122	"c/body" => {
		3123	id => "infobox",
		3124	title => "Body Parts",
		3125	reply => undef,
		3126	tooltip => "Shows which body parts you posess and are available",
		3127	},
		3128	"c/statistics" => {
		3129	id => "infobox",
		3130	title => "Statistics",
		3131	reply => undef,
		3132	tooltip => "Shows your primary statistics",
		3133	},
		3134	"c/skills" => {
		3135	id => "infobox",
		3136	title => "Skills",
		3137	reply => undef,
		3138	tooltip => "Shows your experience per skill and item power",
		3139	},
		3140	"c/shopitems" => {
		3141	id => "infobox",
		3142	title => "Shop Items",
		3143	reply => undef,
		3144	tooltip => "Shows the items currently for sale in this shop",
		3145	},
		3146	"c/resistances" => {
		3147	id => "infobox",
		3148	title => "Resistances",
		3149	reply => undef,
		3150	tooltip => "Shows your resistances",
		3151	},
		3152	"c/pets" => {
		3153	id => "infobox",
		3154	title => "Pets",
		3155	reply => undef,
		3156	tooltip => "Shows information abotu your pets/a specific pet",
		3157	},
		3158	"c/perceiveself" => {
		3159	id => "infobox",
		3160	title => "Perceive Self",
		3161	reply => undef,
		3162	tooltip => "You gained detailed knowledge about yourself",
		3163	},
		3164	"c/uptime" => {
		3165	id => "infobox",
		3166	title => "Uptime",
		3167	reply => undef,
		3168	tooltip => "How long the server has been running since last restart",
		3169	},
		3170	"c/mapinfo" => {
		3171	id => "infobox",
		3172	title => "Map Info",
		3173	reply => undef,
		3174	tooltip => "Information related to the maps",
		3175	},
		3176	"c/party" => {
		3177	id => "party",
		3178	title => "Party",
		3179	reply => "gsay ",
		3180	tooltip => "Messages and chat related to your party",
		3181	},
		3182	"c/death" => {
		3183	id => "death",
		3184	title => "Death",
		3185	reply => undef,
		3186	tooltip => "Reason for and more info about your most recent death",
		3187	},
		3188	"c/say" => $SAY_CHANNEL,
		3189	"c/chat" => $CHAT_CHANNEL,
		3190	);
		3191
		3192	sub cf::client::send_msg {
		3193	my ($self, $channel, $msg, $color, @extra) = @_;
		3194
		3195	$msg = $self->pl->expand_cfpod ($msg)
		3196	unless $color & cf::NDI_VERBATIM;
		3197
		3198	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3199
		3200	# check predefined channels, for the benefit of C
		3201	if ($CHANNEL{$channel}) {
		3202	$channel = $CHANNEL{$channel};
		3203
		3204	$self->ext_msg (channel_info => $channel);
		3205	$channel = $channel->{id};
		3206
		3207	} elsif (ref $channel) {
		3208	# send meta info to client, if not yet sent
		3209	unless (exists $self->{channel}{$channel->{id}}) {
		3210	$self->{channel}{$channel->{id}} = $channel;
		3211	$self->ext_msg (channel_info => $channel);
		3212	}
		3213
		3214	$channel = $channel->{id};
		3215	}
		3216
		3217	return unless @extra || length $msg;
		3218
		3219	# default colour, mask it out
		3220	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3221	if $color & cf::NDI_DEF;
		3222
		3223	my $pkt = "msg "
		3224	. $self->{json_coder}->encode (
		3225	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3226	);
		3227
		3228	$self->send_big_packet ($pkt);
		3229	}
		3230
		3231	=item $client->ext_msg ($type, @msg)
		3232
		3233	Sends an ext event to the client.
		3234
		3235	=cut
		3236
		3237	sub cf::client::ext_msg($$@) {
		3238	my ($self, $type, @msg) = @_;
		3239
		3240	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3241	}
		3242
		3243	=item $client->ext_reply ($msgid, @msg)
		3244
		3245	Sends an ext reply to the client.
		3246
		3247	=cut
		3248
		3249	sub cf::client::ext_reply($$@) {
		3250	my ($self, $id, @msg) = @_;
		3251
		3252	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		3253	}
852		3254
853	=item $success = $client->query ($flags, "text", \&cb)	3255	=item $success = $client->query ($flags, "text", \&cb)
854		3256
855	Queues a query to the client, calling the given callback with	3257	Queues a query to the client, calling the given callback with
856	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	3258	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
857	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	3259	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
858		3260
859	Queries can fail, so check the return code. Or don't, as queries will become	3261	Queries can fail, so check the return code. Or don't, as queries will
860	reliable at some point in the future.	3262	become reliable at some point in the future.
861		3263
862	=cut	3264	=cut
863		3265
864	sub cf::client::query {	3266	sub cf::client::query {
865	my ($self, $flags, $text, $cb) = @_;	3267	my ($self, $flags, $text, $cb) = @_;
…		…
873	utf8::encode $text;	3275	utf8::encode $text;
874	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	3276	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
875		3277
876	$self->send_packet ($self->{query_queue}[0][0])	3278	$self->send_packet ($self->{query_queue}[0][0])
877	if @{ $self->{query_queue} } == 1;	3279	if @{ $self->{query_queue} } == 1;
		3280
		3281	1
878	}	3282	}
879		3283
880	cf::client->attach (	3284	cf::client->attach (
		3285	on_connect => sub {
		3286	my ($ns) = @_;
		3287
		3288	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3289	},
881	on_reply => sub {	3290	on_reply => sub {
882	my ($ns, $msg) = @_;	3291	my ($ns, $msg) = @_;
883		3292
884	# this weird shuffling is so that direct followup queries	3293	# this weird shuffling is so that direct followup queries
885	# get handled first	3294	# get handled first
886	my $queue = delete $ns->{query_queue};	3295	my $queue = delete $ns->{query_queue}
		3296	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		3297
888	(shift @$queue)->[1]->($msg);	3298	(shift @$queue)->[1]->($msg);
		3299	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		3300
890	push @{ $ns->{query_queue} }, @$queue;	3301	push @{ $ns->{query_queue} }, @$queue;
891		3302
892	if (@{ $ns->{query_queue} } == @$queue) {	3303	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	3304	if (@$queue) {
…		…
895	} else {	3306	} else {
896	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	3307	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
897	}	3308	}
898	}	3309	}
899	},	3310	},
		3311	on_exticmd => sub {
		3312	my ($ns, $buf) = @_;
		3313
		3314	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3315
		3316	if (ref $msg) {
		3317	my ($type, $reply, @payload) = @$msg; # version 1 used %type, $id, %$hash
		3318
		3319	my @reply;
		3320
		3321	if (my $cb = $EXTICMD{$type}) {
		3322	@reply = $cb->($ns, @payload);
		3323	}
		3324
		3325	$ns->ext_reply ($reply, @reply)
		3326	if $reply;
		3327
		3328	} else {
		3329	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3330	}
		3331
		3332	cf::override;
		3333	},
900	);	3334	);
901		3335
902	=item $client->coro (\&cb)	3336	=item $client->async (\&cb)
903		3337
904	Create a new coroutine, running the specified callback. The coroutine will	3338	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	3339	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	3340	or loss of connection).
907		3341
908	=cut	3342	=cut
909		3343
910	sub cf::client::coro {	3344	sub cf::client::async {
911	my ($self, $cb) = @_;	3345	my ($self, $cb) = @_;
912		3346
913	my $coro; $coro = async {	3347	my $coro = &Coro::async ($cb);
914	eval {	3348
915	$cb->();	3349	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	3350	delete $self->{_coro}{$coro+0};
919	};	3351	});
920		3352
921	$self->{_coro}{$coro+0} = $coro;	3353	$self->{_coro}{$coro+0} = $coro;
		3354
		3355	$coro
922	}	3356	}
923		3357
924	cf::client->attach (	3358	cf::client->attach (
925	on_destroy => sub {	3359	on_client_destroy => sub {
926	my ($ns) = @_;	3360	my ($ns) = @_;
927		3361
928	$_->cancel for values %{ (delete $ns->{_coro}) || {} };	3362	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
929	},	3363	},
930	);	3364	);
…		…
945	our $safe = new Safe "safe";	3379	our $safe = new Safe "safe";
946	our $safe_hole = new Safe::Hole;	3380	our $safe_hole = new Safe::Hole;
947		3381
948	$SIG{FPE} = 'IGNORE';	3382	$SIG{FPE} = 'IGNORE';
949		3383
950	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3384	$safe->permit_only (Opcode::opset qw(
		3385	:base_core :base_mem :base_orig :base_math :base_loop
		3386	grepstart grepwhile mapstart mapwhile
		3387	sort time
		3388	));
951		3389
952	# here we export the classes and methods available to script code	3390	# here we export the classes and methods available to script code
953		3391
954	=pod	3392	=pod
955		3393
956	The following fucntions and emthods are available within a safe environment:	3394	The following functions and methods are available within a safe environment:
957		3395
958	cf::object contr pay_amount pay_player map	3396	cf::object
		3397	contr pay_amount pay_player map x y force_find force_add destroy
		3398	insert remove name archname title slaying race decrease split
		3399	value
		3400
959	cf::object::player player	3401	cf::object::player
960	cf::player peaceful	3402	player
961	cf::map trigger	3403
		3404	cf::player
		3405	peaceful
		3406
		3407	cf::map
		3408	trigger
962		3409
963	=cut	3410	=cut
964		3411
965	for (	3412	for (
966	["cf::object" => qw(contr pay_amount pay_player map)],	3413	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3414	insert remove inv nrof name archname title slaying race
		3415	decrease split destroy change_exp value msg lore send_msg)],
967	["cf::object::player" => qw(player)],	3416	["cf::object::player" => qw(player)],
968	["cf::player" => qw(peaceful)],	3417	["cf::player" => qw(peaceful send_msg)],
969	["cf::map" => qw(trigger)],	3418	["cf::map" => qw(trigger)],
970	) {	3419	) {
971	no strict 'refs';
972	my ($pkg, @funs) = @$_;	3420	my ($pkg, @funs) = @$_;
973	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3421	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
974	for @funs;	3422	for @funs;
975	}	3423	}
976		3424
…		…
991		3439
992	my $qcode = $code;	3440	my $qcode = $code;
993	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3441	$qcode =~ s/"/‟/g; # not allowed in #line filenames
994	$qcode =~ s/\n/\\n/g;	3442	$qcode =~ s/\n/\\n/g;
995		3443
		3444	%vars = (_dummy => 0) unless %vars;
		3445
		3446	my @res;
996	local $_;	3447	local $_;
997	local @safe::cf::_safe_eval_args = values %vars;
998		3448
999	my $eval =	3449	my $eval =
1000	"do {\n"	3450	"do {\n"
1001	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3451	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
1002	. "#line 0 \"{$qcode}\"\n"	3452	. "#line 0 \"{$qcode}\"\n"
1003	. $code	3453	. $code
1004	. "\n}"	3454	. "\n}"
1005	;	3455	;
1006		3456
		3457	if ($CFG{safe_eval}) {
1007	sub_generation_inc;	3458	sub_generation_inc;
		3459	local @safe::cf::_safe_eval_args = values %vars;
1008	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3460	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
1009	sub_generation_inc;	3461	sub_generation_inc;
		3462	} else {
		3463	local @cf::_safe_eval_args = values %vars;
		3464	@res = wantarray ? eval eval : scalar eval $eval;
		3465	}
1010		3466
1011	if ($@) {	3467	if ($@) {
1012	warn "$@";	3468	warn "$@",
1013	warn "while executing safe code '$code'\n";	3469	"while executing safe code '$code'\n",
1014	warn "with arguments " . (join " ", %vars) . "\n";	3470	"with arguments " . (join " ", %vars) . "\n";
1015	}	3471	}
1016		3472
1017	wantarray ? @res : $res[0]	3473	wantarray ? @res : $res[0]
1018	}	3474	}
1019		3475
…		…
1033	=cut	3489	=cut
1034		3490
1035	sub register_script_function {	3491	sub register_script_function {
1036	my ($fun, $cb) = @_;	3492	my ($fun, $cb) = @_;
1037		3493
1038	no strict 'refs';	3494	$fun = "safe::$fun" if $CFG{safe_eval};
1039	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3495	*$fun = $safe_hole->wrap ($cb);
1040	}	3496	}
1041		3497
1042	=back	3498	=back
1043		3499
1044	=cut	3500	=cut
1045		3501
1046	#############################################################################	3502	#############################################################################
		3503	# the server's init and main functions
1047		3504
1048	=head2 EXTENSION DATABASE SUPPORT	3505	our %FACEHASH; # hash => idx, #d# HACK for http server
1049		3506
1050	Crossfire maintains a very simple database for extension use. It can	3507	# internal api, not fianlised
1051	currently store anything that can be serialised using Storable, which	3508	sub add_face {
1052	excludes objects.	3509	my ($name, $type, $data) = @_;
1053		3510
1054	The parameter C<$family> should best start with the name of the extension	3511	my $idx = cf::face::find $name;
1055	using it, it should be unique.
1056		3512
1057	=over 4	3513	if ($idx) {
		3514	delete $FACEHASH{cf::face::get_chksum $idx};
		3515	} else {
		3516	$idx = cf::face::alloc $name;
		3517	}
1058		3518
1059	=item $hashref = cf::db_get $family	3519	my $hash = cf::face::mangle_chksum Digest::MD5::md5 $data;
1060		3520
1061	Return a hashref for use by the extension C<$family>, which can be	3521	cf::face::set_type $idx, $type;
1062	modified. After modifications, you have to call C<cf::db_dirty> or	3522	cf::face::set_data $idx, 0, $data, $hash;
1063	C<cf::db_sync>.	3523	cf::face::set_meta $idx, $type & 1 ? undef : undef;
		3524	$FACEHASH{$hash} = $idx;#d#
1064		3525
1065	=item $value = cf::db_get $family => $key	3526	$idx
		3527	}
1066		3528
1067	Returns a single value from the database	3529	sub load_facedata($) {
		3530	my ($path) = @_;
1068		3531
1069	=item cf::db_put $family => $hashref	3532	# HACK to clear player env face cache, we need some signal framework
		3533	# for this (global event?)
		3534	%ext::player_env::MUSIC_FACE_CACHE = ();
1070		3535
1071	Stores the given family hashref into the database. Updates are delayed, if	3536	my $enc = JSON::XS->new->utf8->canonical->relaxed;
1072	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1073		3537
1074	=item cf::db_put $family => $key => $value	3538	trace "loading facedata from $path\n";
1075		3539
1076	Stores the given C<$value> in the family hash. Updates are delayed, if you	3540	my $facedata = decode_storable load_file $path;
1077	want the data to be synced to disk immediately, use C<cf::db_sync>.
1078		3541
1079	=item cf::db_dirty	3542	$facedata->{version} == 2
		3543	or cf::cleanup "$path: version mismatch, cannot proceed.";
1080		3544
1081	Marks the database as dirty, to be updated at a later time.	3545	cf::cede_to_tick;
1082		3546
1083	=item cf::db_sync	3547	{
		3548	my $faces = $facedata->{faceinfo};
1084		3549
1085	Immediately write the database to disk I<if it is dirty>.	3550	for my $face (sort keys %$faces) {
		3551	my $info = $faces->{$face};
		3552	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1086		3553
1087	=cut	3554	cf::face::set_visibility $idx, $info->{visibility};
		3555	cf::face::set_magicmap $idx, $info->{magicmap};
		3556	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3557	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3558	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3559	$FACEHASH{$info->{hash64}} = $idx;#d#
1088		3560
1089	our $DB;	3561	cf::cede_to_tick;
		3562	}
		3563
		3564	while (my ($face, $info) = each %$faces) {
		3565	next unless $info->{smooth};
		3566
		3567	my $idx = cf::face::find $face
		3568	or next;
		3569
		3570	if (my $smooth = cf::face::find $info->{smooth}) {
		3571	cf::face::set_smooth $idx, $smooth;
		3572	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3573	} else {
		3574	error "smooth face '$info->{smooth}' not found for face '$face'";
		3575	}
		3576
		3577	cf::cede_to_tick;
		3578	}
		3579	}
		3580
		3581	{
		3582	my $anims = $facedata->{animinfo};
		3583
		3584	while (my ($anim, $info) = each %$anims) {
		3585	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3586	cf::cede_to_tick;
		3587	}
		3588
		3589	cf::anim::invalidate_all; # d'oh
		3590	}
		3591
		3592	{
		3593	my $res = $facedata->{resource};
		3594
		3595	while (my ($name, $info) = each %$res) {
		3596	if (defined (my $type = $info->{type})) {
		3597	# TODO: different hash - must free and use new index, or cache ixface data queue
		3598	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3599
		3600	cf::face::set_type $idx, $type;
		3601	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3602	cf::face::set_meta $idx, $type & 1 ? undef : $info->{meta}; # preserve meta unless prepended already
		3603	$FACEHASH{$info->{hash}} = $idx;#d#
		3604	} else {
		3605	# $RESOURCE{$name} = $info; # unused
		3606	}
		3607
		3608	cf::cede_to_tick;
		3609	}
		3610	}
		3611
		3612	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3613
		3614	1
		3615	}
		3616
		3617	register_exticmd fx_want => sub {
		3618	my ($ns, $want) = @_;
		3619
		3620	while (my ($k, $v) = each %$want) {
		3621	$ns->fx_want ($k, $v);
		3622	}
		3623	};
		3624
		3625	sub load_resource_file($) {
		3626	my $guard = lock_acquire "load_resource_file";
		3627
		3628	my $status = load_resource_file_ $_[0];
		3629	get_slot 0.1, 100;
		3630	cf::arch::commit_load;
		3631
		3632	$status
		3633	}
		3634
		3635	sub reload_exp_table {
		3636	_reload_exp_table;
		3637
		3638	add_face "res/exp_table" => FT_RSRC,
		3639	JSON::XS->new->utf8->canonical->encode (
		3640	[map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]
		3641	);
		3642	}
		3643
		3644	sub reload_materials {
		3645	_reload_materials;
		3646	}
		3647
		3648	sub reload_regions {
		3649	# HACK to clear player env face cache, we need some signal framework
		3650	# for this (global event?)
		3651	%ext::player_env::MUSIC_FACE_CACHE = ();
		3652
		3653	load_resource_file "$MAPDIR/regions"
		3654	or die "unable to load regions file\n";
		3655
		3656	for (cf::region::list) {
		3657	$_->{match} = qr/$_->{match}/
		3658	if exists $_->{match};
		3659	}
		3660	}
		3661
		3662	sub reload_facedata {
		3663	load_facedata "$DATADIR/facedata"
		3664	or die "unable to load facedata\n";
		3665	}
		3666
		3667	sub reload_archetypes {
		3668	load_resource_file "$DATADIR/archetypes"
		3669	or die "unable to load archetypes\n";
		3670
		3671	add_face "res/skill_info" => FT_RSRC,
		3672	JSON::XS->new->utf8->canonical->encode (
		3673	[map [cf::arch::skillvec ($_)->name], 0 .. cf::arch::skillvec_size - 1]
		3674	);
		3675	add_face "res/spell_paths" => FT_RSRC,
		3676	JSON::XS->new->utf8->canonical->encode (
		3677	[map [cf::spellpathnames ($_)], 0 .. NRSPELLPATHS - 1]
		3678	);
		3679	}
		3680
		3681	sub reload_treasures {
		3682	load_resource_file "$DATADIR/treasures"
		3683	or die "unable to load treasurelists\n";
		3684	}
		3685
		3686	sub reload_sound {
		3687	trace "loading sound config from $DATADIR/sound\n";
		3688
		3689	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3690
		3691	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3692	my $sound = $soundconf->{compat}[$_]
		3693	or next;
		3694
		3695	my $face = cf::face::find "sound/$sound->[1]";
		3696	cf::sound::set $sound->[0] => $face;
		3697	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3698	}
		3699
		3700	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3701	my $face = cf::face::find "sound/$v";
		3702	cf::sound::set $k => $face;
		3703	}
		3704	}
		3705
		3706	sub reload_resources {
		3707	trace "reloading resource files...\n";
		3708
		3709	reload_materials;
		3710	reload_facedata;
		3711	reload_exp_table;
		3712	reload_sound;
		3713	reload_archetypes;
		3714	reload_regions;
		3715	reload_treasures;
		3716
		3717	trace "finished reloading resource files\n";
		3718	}
		3719
		3720	sub reload_config {
		3721	trace "reloading config file...\n";
		3722
		3723	my $config = load_file "$CONFDIR/config";
		3724	utf8::decode $config;
		3725	*CFG = decode_yaml $config;
		3726
		3727	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3728
		3729	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3730	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3731
		3732	if (exists $CFG{mlockall}) {
		3733	eval {
		3734	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3735	and die "WARNING: m(un)lockall failed: $!\n";
		3736	};
		3737	warn $@ if $@;
		3738	}
		3739	}
		3740
		3741	sub pidfile() {
		3742	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3743	or die "$PIDFILE: $!";
		3744	flock $fh, &Fcntl::LOCK_EX
		3745	or die "$PIDFILE: flock: $!";
		3746	$fh
		3747	}
		3748
		3749	# make sure only one server instance is running at any one time
		3750	sub atomic {
		3751	my $fh = pidfile;
		3752
		3753	my $pid = <$fh>;
		3754	kill 9, $pid if $pid > 0;
		3755
		3756	seek $fh, 0, 0;
		3757	print $fh $$;
		3758	}
		3759
		3760	sub main_loop {
		3761	trace "EV::loop starting\n";
		3762	if (1) {
		3763	EV::loop;
		3764	}
		3765	trace "EV::loop returned\n";
		3766	goto &main_loop unless $REALLY_UNLOOP;
		3767	}
		3768
		3769	sub main {
		3770	cf::init_globals; # initialise logging
		3771
		3772	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3773	LOG llevInfo, "Copyright (C) 2005-2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3774	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3775	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3776
		3777	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3778
		3779	# we must not ever block the main coroutine
		3780	$Coro::idle = sub {
		3781	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3782	(async {
		3783	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3784	EV::loop EV::LOOP_ONESHOT;
		3785	})->prio (Coro::PRIO_MAX);
		3786	};
		3787
		3788	evthread_start IO::AIO::poll_fileno;
		3789
		3790	cf::sync_job {
		3791	cf::incloader::init ();
		3792
		3793	cf::init_anim;
		3794	cf::init_attackmess;
		3795	cf::init_dynamic;
		3796
		3797	cf::load_settings;
		3798
		3799	reload_resources;
		3800	reload_config;
		3801	db_init;
		3802
		3803	cf::init_uuid;
		3804	cf::init_signals;
		3805	cf::init_skills;
		3806
		3807	cf::init_beforeplay;
		3808
		3809	atomic;
		3810
		3811	load_extensions;
		3812
		3813	utime time, time, $RUNTIMEFILE;
		3814
		3815	# no (long-running) fork's whatsoever before this point(!)
		3816	use POSIX ();
		3817	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3818
		3819	cf::_post_init 0;
		3820	};
		3821
		3822	cf::object::thawer::errors_are_fatal 0;
		3823	info "parse errors in files are no longer fatal from this point on.\n";
		3824
		3825	AE::postpone {
		3826	undef &main; # free gobs of memory :)
		3827	};
		3828
		3829	goto &main_loop;
		3830	}
		3831
		3832	#############################################################################
		3833	# initialisation and cleanup
		3834
		3835	# install some emergency cleanup handlers
		3836	BEGIN {
		3837	our %SIGWATCHER = ();
		3838	for my $signal (qw(INT HUP TERM)) {
		3839	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3840	cf::cleanup "SIG$signal";
		3841	};
		3842	}
		3843	}
		3844
		3845	sub write_runtime_sync {
		3846	my $t0 = AE::time;
		3847
		3848	# first touch the runtime file to show we are still running:
		3849	# the fsync below can take a very very long time.
		3850
		3851	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
		3852
		3853	my $guard = cf::lock_acquire "write_runtime";
		3854
		3855	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3856	or return;
		3857
		3858	my $value = $cf::RUNTIME + 90 + 10;
		3859	# 10 is the runtime save interval, for a monotonic clock
		3860	# 60 allows for the watchdog to kill the server.
		3861
		3862	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3863	and return;
		3864
		3865	# always fsync - this file is important
		3866	aio_fsync $fh
		3867	and return;
		3868
		3869	# touch it again to show we are up-to-date
		3870	aio_utime $fh, undef, undef;
		3871
		3872	close $fh
		3873	or return;
		3874
		3875	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3876	and return;
		3877
		3878	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3879
		3880	1
		3881	}
		3882
		3883	our $uuid_lock;
		3884	our $uuid_skip;
		3885
		3886	sub write_uuid_sync($) {
		3887	$uuid_skip ||= $_[0];
		3888
		3889	return if $uuid_lock;
		3890	local $uuid_lock = 1;
		3891
		3892	my $uuid = "$LOCALDIR/uuid";
		3893
		3894	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3895	or return;
		3896
		3897	my $value = uuid_seq uuid_cur;
		3898
		3899	unless ($value) {
		3900	info "cowardly refusing to write zero uuid value!\n";
		3901	return;
		3902	}
		3903
		3904	my $value = uuid_str $value + $uuid_skip;
		3905	$uuid_skip = 0;
		3906
		3907	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3908	and return;
		3909
		3910	# always fsync - this file is important
		3911	aio_fsync $fh
		3912	and return;
		3913
		3914	close $fh
		3915	or return;
		3916
		3917	aio_rename "$uuid~", $uuid
		3918	and return;
		3919
		3920	trace "uuid file written ($value).\n";
		3921
		3922	1
		3923
		3924	}
		3925
		3926	sub write_uuid($$) {
		3927	my ($skip, $sync) = @_;
		3928
		3929	$sync ? write_uuid_sync $skip
		3930	: async { write_uuid_sync $skip };
		3931	}
		3932
		3933	sub emergency_save() {
		3934	my $freeze_guard = cf::freeze_mainloop;
		3935
		3936	info "emergency_perl_save: enter\n";
		3937
		3938	# this is a trade-off: we want to be very quick here, so
		3939	# save all maps without fsync, and later call a global sync
		3940	# (which in turn might be very very slow)
		3941	local $USE_FSYNC = 0;
		3942
		3943	cf::sync_job {
		3944	cf::write_runtime_sync; # external watchdog should not bark
		3945
		3946	# use a peculiar iteration method to avoid tripping on perl
		3947	# refcount bugs in for. also avoids problems with players
		3948	# and maps saved/destroyed asynchronously.
		3949	info "emergency_perl_save: begin player save\n";
		3950	for my $login (keys %cf::PLAYER) {
		3951	my $pl = $cf::PLAYER{$login} or next;
		3952	$pl->valid or next;
		3953	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3954	$pl->save;
		3955	}
		3956	info "emergency_perl_save: end player save\n";
		3957
		3958	cf::write_runtime_sync; # external watchdog should not bark
		3959
		3960	info "emergency_perl_save: begin map save\n";
		3961	for my $path (keys %cf::MAP) {
		3962	my $map = $cf::MAP{$path} or next;
		3963	$map->valid or next;
		3964	$map->save;
		3965	}
		3966	info "emergency_perl_save: end map save\n";
		3967
		3968	cf::write_runtime_sync; # external watchdog should not bark
		3969
		3970	info "emergency_perl_save: begin database checkpoint\n";
		3971	BDB::db_env_txn_checkpoint $DB_ENV;
		3972	info "emergency_perl_save: end database checkpoint\n";
		3973
		3974	info "emergency_perl_save: begin write uuid\n";
		3975	write_uuid_sync 1;
		3976	info "emergency_perl_save: end write uuid\n";
		3977
		3978	cf::write_runtime_sync; # external watchdog should not bark
		3979
		3980	trace "emergency_perl_save: syncing database to disk";
		3981	BDB::db_env_txn_checkpoint $DB_ENV;
		3982
		3983	info "emergency_perl_save: starting sync\n";
		3984	IO::AIO::aio_sync sub {
		3985	info "emergency_perl_save: finished sync\n";
		3986	};
		3987
		3988	cf::write_runtime_sync; # external watchdog should not bark
		3989
		3990	trace "emergency_perl_save: flushing outstanding aio requests";
		3991	while (IO::AIO::nreqs || BDB::nreqs) {
		3992	Coro::AnyEvent::sleep 0.01; # let the sync_job do it's thing
		3993	}
		3994
		3995	cf::write_runtime_sync; # external watchdog should not bark
		3996	};
		3997
		3998	info "emergency_perl_save: leave\n";
		3999	}
		4000
		4001	sub post_cleanup {
		4002	my ($make_core) = @_;
		4003
		4004	IO::AIO::flush;
		4005
		4006	error Carp::longmess "post_cleanup backtrace"
		4007	if $make_core;
		4008
		4009	my $fh = pidfile;
		4010	unlink $PIDFILE if <$fh> == $$;
		4011	}
		4012
		4013	# a safer delete_package, copied from Symbol
		4014	sub clear_package($) {
		4015	my $pkg = shift;
		4016
		4017	# expand to full symbol table name if needed
		4018	unless ($pkg =~ /^main::.*::$/) {
		4019	$pkg = "main$pkg" if $pkg =~ /^::/;
		4020	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		4021	$pkg .= '::' unless $pkg =~ /::$/;
		4022	}
		4023
		4024	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		4025	my $stem_symtab = *{$stem}{HASH};
		4026
		4027	defined $stem_symtab and exists $stem_symtab->{$leaf}
		4028	or return;
		4029
		4030	# clear all symbols
		4031	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		4032	for my $name (keys %$leaf_symtab) {
		4033	_gv_clear *{"$pkg$name"};
		4034	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		4035	}
		4036	}
		4037
		4038	sub do_reload_perl() {
		4039	# can/must only be called in main
		4040	unless (in_main) {
		4041	error "can only reload from main coroutine";
		4042	return;
		4043	}
		4044
		4045	return if $RELOAD++;
		4046
		4047	my $t1 = AE::time;
		4048
		4049	while ($RELOAD) {
		4050	cf::get_slot 0.1, -1, "reload_perl";
		4051	info "perl_reload: reloading...";
		4052
		4053	trace "perl_reload: entering sync_job";
		4054
		4055	cf::sync_job {
		4056	#cf::emergency_save;
		4057
		4058	trace "perl_reload: cancelling all extension coros";
		4059	$_->cancel for values %EXT_CORO;
		4060	%EXT_CORO = ();
		4061
		4062	trace "perl_reload: removing commands";
		4063	%COMMAND = ();
		4064
		4065	trace "perl_reload: removing ext/exti commands";
		4066	%EXTCMD = ();
		4067	%EXTICMD = ();
		4068
		4069	trace "perl_reload: unloading/nuking all extensions";
		4070	for my $pkg (@EXTS) {
		4071	trace "... unloading $pkg";
		4072
		4073	if (my $cb = $pkg->can ("unload")) {
		4074	eval {
		4075	$cb->($pkg);
		4076	1
		4077	} or error "$pkg unloaded, but with errors: $@";
		4078	}
		4079
		4080	trace "... clearing $pkg";
		4081	clear_package $pkg;
		4082	}
		4083
		4084	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		4085	while (my ($k, $v) = each %INC) {
		4086	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		4087
		4088	trace "... unloading $k";
		4089	delete $INC{$k};
		4090
		4091	$k =~ s/\.pm$//;
		4092	$k =~ s/\//::/g;
		4093
		4094	if (my $cb = $k->can ("unload_module")) {
		4095	$cb->();
		4096	}
		4097
		4098	clear_package $k;
		4099	}
		4100
		4101	trace "perl_reload: getting rid of safe::, as good as possible";
		4102	clear_package "safe::$_"
		4103	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		4104
		4105	trace "perl_reload: unloading cf.pm \"a bit\"";
		4106	delete $INC{"cf.pm"};
		4107	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4108
		4109	# don't, removes xs symbols, too,
		4110	# and global variables created in xs
		4111	#clear_package __PACKAGE__;
		4112
		4113	info "perl_reload: unload completed, starting to reload now";
		4114
		4115	trace "perl_reload: reloading cf.pm";
		4116	require cf;
		4117	cf::_connect_to_perl_1;
		4118
		4119	trace "perl_reload: loading config and database again";
		4120	cf::reload_config;
		4121
		4122	trace "perl_reload: loading extensions";
		4123	cf::load_extensions;
		4124
		4125	if ($REATTACH_ON_RELOAD) {
		4126	trace "perl_reload: reattaching attachments to objects/players";
		4127	_global_reattach; # objects, sockets
		4128	trace "perl_reload: reattaching attachments to maps";
		4129	reattach $_ for values %MAP;
		4130	trace "perl_reload: reattaching attachments to players";
		4131	reattach $_ for values %PLAYER;
		4132	}
		4133
		4134	cf::_post_init 1;
		4135
		4136	trace "perl_reload: leaving sync_job";
		4137
		4138	1
		4139	} or do {
		4140	error $@;
		4141	cf::cleanup "perl_reload: error, exiting.";
		4142	};
		4143
		4144	--$RELOAD;
		4145	}
		4146
		4147	$t1 = AE::time - $t1;
		4148	info "perl_reload: completed in ${t1}s\n";
		4149	};
		4150
		4151	our $RELOAD_WATCHER; # used only during reload
		4152
		4153	sub reload_perl() {
		4154	# doing reload synchronously and two reloads happen back-to-back,
		4155	# coro crashes during coro_state_free->destroy here.
		4156
		4157	$RELOAD_WATCHER ||= cf::async {
		4158	Coro::AIO::aio_wait cache_extensions;
		4159
		4160	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4161	do_reload_perl;
		4162	undef $RELOAD_WATCHER;
		4163	};
		4164	};
		4165	}
		4166
		4167	register_command "reload" => sub {
		4168	my ($who, $arg) = @_;
		4169
		4170	if ($who->flag (FLAG_WIZ)) {
		4171	$who->message ("reloading server.");
		4172	async {
		4173	$Coro::current->{desc} = "perl_reload";
		4174	reload_perl;
		4175	};
		4176	}
		4177	};
		4178
		4179	#############################################################################
		4180
		4181	my $bug_warning = 0;
		4182
		4183	sub wait_for_tick() {
		4184	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4185
		4186	$WAIT_FOR_TICK->wait;
		4187	}
		4188
		4189	sub wait_for_tick_begin() {
		4190	return Coro::AnyEvent::poll if tick_inhibit || $Coro::current == $Coro::main;
		4191
		4192	my $signal = new Coro::Signal;
		4193	push @WAIT_FOR_TICK_BEGIN, $signal;
		4194	$signal->wait;
		4195	}
		4196
		4197	sub tick {
		4198	if ($Coro::current != $Coro::main) {
		4199	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4200	unless ++$bug_warning > 10;
		4201	return;
		4202	}
		4203
		4204	cf::one_tick; # one server iteration
		4205
		4206	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
		4207
		4208	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		4209	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
		4210	Coro::async_pool {
		4211	$Coro::current->{desc} = "runtime saver";
		4212	write_runtime_sync
		4213	or error "ERROR: unable to write runtime file: $!";
		4214	};
		4215	}
		4216
		4217	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4218	$sig->send;
		4219	}
		4220	$WAIT_FOR_TICK->broadcast;
		4221
		4222	$LOAD = ($NOW - $TICK_START) / $TICK;
		4223	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4224
		4225	if (0) {
		4226	if ($NEXT_TICK) {
		4227	my $jitter = $TICK_START - $NEXT_TICK;
		4228	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4229	debug "jitter $JITTER\n";#d#
		4230	}
		4231	}
		4232	}
1090		4233
1091	{	4234	{
1092	my $path = cf::localdir . "/database.pst";	4235	# configure BDB
1093		4236
1094	sub db_load() {	4237	BDB::min_parallel 16;
1095	warn "loading database $path\n";#d# remove later	4238	BDB::max_poll_reqs $TICK * 0.1;
1096	$DB = stat $path ? Storable::retrieve $path : { };	4239	#$AnyEvent::BDB::WATCHER->priority (1);
1097	}
1098		4240
1099	my $pid;	4241	unless ($DB_ENV) {
		4242	$DB_ENV = BDB::db_env_create;
		4243	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4244	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4245	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4246	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4247	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
1100		4248
1101	sub db_save() {	4249	cf::sync_job {
1102	warn "saving database $path\n";#d# remove later
1103	waitpid $pid, 0 if $pid;
1104	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;
1108	cf::_exit 0 if defined $pid;
1109	}
1110	}
1111
1112	my $dirty;
1113
1114	sub db_sync() {
1115	db_save if $dirty;
1116	undef $dirty;
1117	}
1118
1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1120	db_sync;
1121	});
1122
1123	sub db_dirty() {
1124	$dirty = 1;
1125	$idle->start;
1126	}
1127
1128	sub db_get($;$) {
1129	@_ >= 2
1130	? $DB->{$_[0]}{$_[1]}
1131	: ($DB->{$_[0]} ||= { })
1132	}
1133
1134	sub db_put($$;$) {
1135	if (@_ >= 3) {
1136	$DB->{$_[0]}{$_[1]} = $_[2];
1137	} else {	4250	eval {
1138	$DB->{$_[0]} = $_[1];	4251	BDB::db_env_open
1139	}	4252	$DB_ENV,
1140	db_dirty;	4253	$BDBDIR,
1141	}	4254	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4255	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4256	0666;
1142		4257
1143	cf::global->attach (	4258	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
1144	prio => 10000,
1145	on_cleanup => sub {
1146	db_sync;
1147	},
1148	);
1149	}
1150
1151	#############################################################################
1152	# the server's main()
1153
1154	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"
1156	or return;
1157
1158	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;
1160	}
1161
1162	sub main {
1163	cfg_load;
1164	db_load;
1165	load_extensions;
1166	Event::loop;
1167	}
1168
1169	#############################################################################
1170	# initialisation
1171
1172	sub _perl_reload(&) {
1173	my ($msg) = @_;
1174
1175	$msg->("reloading...");
1176
1177	eval {
1178	# cancel all watchers
1179	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}
1182
1183	# unload all extensions
1184	for (@exts) {
1185	$msg->("unloading <$_>");
1186	unload_extension $_;
1187	}
1188
1189	# unload all modules loaded from $LIBDIR
1190	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192
1193	$msg->("removing <$k>");
1194	delete $INC{$k};
1195
1196	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;
1198
1199	if (my $cb = $k->can ("unload_module")) {
1200	$cb->();
1201	}	4259	};
1202		4260
1203	Symbol::delete_package $k;	4261	cf::cleanup "db_env_open(db): $@" if $@;
1204	}	4262	};
		4263	}
1205		4264
1206	# sync database to disk	4265	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
1207	cf::db_sync;	4266	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
1208
1209	# get rid of safe::, as good as possible
1210	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
1212
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"
1217	delete $INC{"cf.pm"};
1218
1219	# don't, removes xs symbols, too,
1220	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;
1222
1223	# reload cf.pm
1224	$msg->("reloading cf.pm");
1225	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227
1228	# load config and database again
1229	cf::cfg_load;
1230	cf::db_load;
1231
1232	# load extensions
1233	$msg->("load extensions");
1234	cf::load_extensions;
1235
1236	# reattach attachments to objects
1237	$msg->("reattach");
1238	_global_reattach;
1239	};	4267	};
1240	$msg->($@) if $@;	4268	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
1241		4269	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
1242	$msg->("reloaded");
1243	};
1244
1245	sub perl_reload() {
1246	_perl_reload {
1247	warn $_[0];
1248	print "$_[0]\n";
1249	};	4270	};
		4271	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4272	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4273	};
1250	}	4274	}
1251		4275
1252	register "<global>", __PACKAGE__;	4276	{
		4277	# configure IO::AIO
1253		4278
1254	register_command "perl-reload" => sub {	4279	IO::AIO::min_parallel 8;
		4280	IO::AIO::max_poll_time $TICK * 0.1;
		4281	undef $AnyEvent::AIO::WATCHER;
		4282	}
		4283
		4284	our $_log_backtrace;
		4285	our $_log_backtrace_last;
		4286
		4287	sub _log_backtrace {
1255	my ($who, $arg) = @_;	4288	my ($msg, @addr) = @_;
1256		4289
1257	if ($who->flag (FLAG_WIZ)) {	4290	$msg =~ s/\n$//;
1258	_perl_reload {	4291
1259	warn $_[0];	4292	if ($_log_backtrace_last eq $msg) {
1260	$who->message ($_[0]);	4293	LOG llevInfo, "[ABT] $msg\n";
		4294	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4295	# limit the # of concurrent backtraces
		4296	} elsif ($_log_backtrace < 2) {
		4297	$_log_backtrace_last = $msg;
		4298	++$_log_backtrace;
		4299	my $perl_bt = Carp::longmess $msg;
		4300	async {
		4301	$Coro::current->{desc} = "abt $msg";
		4302
		4303	my @bt = fork_call {
		4304	@addr = map { sprintf "%x", $_ } @addr;
		4305	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4306	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4307	or die "addr2line: $!";
		4308
		4309	my @funcs;
		4310	my @res = <$fh>;
		4311	chomp for @res;
		4312	while (@res) {
		4313	my ($func, $line) = splice @res, 0, 2, ();
		4314	push @funcs, "[$func] $line";
		4315	}
		4316
		4317	@funcs
		4318	};
		4319
		4320	LOG llevInfo, "[ABT] $perl_bt\n";
		4321	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4322	LOG llevInfo, "[ABT] $_\n" for @bt;
		4323	--$_log_backtrace;
1261	};	4324	};
1262	}	4325	} else {
1263	};	4326	LOG llevInfo, "[ABT] $msg\n";
1264		4327	LOG llevInfo, "[ABT] [overload, suppressed]\n";
1265	unshift @INC, $LIBDIR;
1266
1267	$TICK_WATCHER = Event->timer (
1268	prio => 0,
1269	at => $NEXT_TICK || 1,
1270	data => WF_AUTOCANCEL,
1271	cb => sub {
1272	cf::server_tick; # one server iteration
1273
1274	my $NOW = Event::time;
1275	$NEXT_TICK += $TICK;
1276
1277	# if we are delayed by four ticks or more, skip them all
1278	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1279
1280	$TICK_WATCHER->at ($NEXT_TICK);
1281	$TICK_WATCHER->start;
1282	},	4328	}
1283	);	4329	}
1284		4330
1285	IO::AIO::max_poll_time $TICK * 0.2;	4331	# load additional modules
		4332	require "cf/$_.pm" for @EXTRA_MODULES;
		4333	cf::_connect_to_perl_2;
1286		4334
1287	Event->io (fd => IO::AIO::poll_fileno,	4335	END { cf::emergency_save }
1288	poll => 'r',
1289	prio => 5,
1290	data => WF_AUTOCANCEL,
1291	cb => \&IO::AIO::poll_cb);
1292		4336
1293	1	4337	1
1294		4338

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