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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.20 by root, Sun Jul 16 17:29:02 2006 UTC vs.
Revision 1.272 by root, Sun Jun 3 15:32:50 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
6
7	use Event;	10	use Event;
		11	use Opcode;
		12	use Safe;
		13	use Safe::Hole;
		14
		15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
		29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
		31	use Time::HiRes;
		32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
8	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
9		41
10	use strict;	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		43	$YAML::Syck::ImplicitUnicode = 1;
11		44
12	our %COMMAND;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		48
		49	our %COMMAND = ();
		50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
		53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
		56
		57	our $RELOAD; # number of reloads so far
13	our @EVENT;	58	our @EVENT;
14	our %PROP_TYPE;	59
15	our %PROP_IDX;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
		76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
		82
		83	our %CFG;
		84
		85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
		115
		116	#############################################################################
		117
		118	=head2 GLOBAL VARIABLES
		119
		120	=over 4
		121
		122	=item $cf::UPTIME
		123
		124	The timestamp of the server start (so not actually an uptime).
		125
		126	=item $cf::RUNTIME
		127
		128	The time this server has run, starts at 0 and is increased by $cf::TICK on
		129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
		143
		144	=item $cf::TICK
		145
		146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
		157
		158	=item %cf::CFG
		159
		160	Configuration for the server, loaded from C</etc/crossfire/config>, or
		161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		168
		169	=back
		170
		171	=cut
16		172
17	BEGIN {	173	BEGIN {
18	@EVENT = map lc, @EVENT;
19
20	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
21	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
22	$msg .= "\n"	177	$msg .= "\n"
23	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
24		179
25	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
26	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
27	};	184	};
28	}	185	}
29		186
30	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
31		193
32	# generate property mutators	194	# we bless all objects into (empty) derived classes to force a method lookup
33	sub prop_gen {	195	# within the Safe compartment.
34	my ($prefix, $class) = @_;	196	for my $pkg (qw(
35		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
36	no strict 'refs';	203	no strict 'refs';
37		204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
38	for my $prop (keys %PROP_TYPE) {
39	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
40	my $sub = lc $1;
41
42	my $type = $PROP_TYPE{$prop};
43	my $idx = $PROP_IDX {$prop};
44
45	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
46	$_[0]->get_property ($type, $idx)
47	};
48
49	*{"$class\::set_$sub"} = sub {
50	$_[0]->set_property ($type, $idx, $_[1]);
51	} unless $ignore_set{$prop};
52	}
53	}	205	}
54
55	# auto-generate most of the API
56
57	prop_gen OBJECT_PROP => "cf::object";
58	# CFAPI_OBJECT_ANIMATION?
59	prop_gen PLAYER_PROP => "cf::object::player";
60
61	prop_gen MAP_PROP => "cf::map";
62	prop_gen ARCH_PROP => "cf::arch";
63
64	# guessed hierarchies
65
66	@cf::object::player::ISA = 'cf::object';
67	@cf::object::map::ISA = 'cf::object';
68		206
69	$Event::DIED = sub {	207	$Event::DIED = sub {
70	warn "error in event callback: @_";	208	warn "error in event callback: @_";
71	};	209	};
72		210
73	my %ext_pkg;	211	=head2 UTILITY FUNCTIONS
74	my @exts;
75	my @hook;
76	my %command;
77	my %extcmd;
78		212
79	sub inject_event {	213	=over 4
80	my $extension = shift;	214
		215	=item dumpval $ref
		216
		217	=cut
		218
		219	sub dumpval {
		220	eval {
		221	local $SIG{__DIE__};
		222	my $d;
		223	if (1) {
		224	$d = new Data::Dumper([$_[0]], ["*var"]);
		225	$d->Terse(1);
		226	$d->Indent(2);
		227	$d->Quotekeys(0);
		228	$d->Useqq(1);
		229	#$d->Bless(...);
		230	$d->Seen($_[1]) if @_ > 1;
		231	$d = $d->Dump();
		232	}
		233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		234	$d
		235	} || "[unable to dump $_[0]: '$@']";
		236	}
		237
		238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		239
		240	=item $ref = cf::from_json $json
		241
		242	Converts a JSON string into the corresponding perl data structure.
		243
		244	=item $json = cf::to_json $ref
		245
		246	Converts a perl data structure into its JSON representation.
		247
		248	=item cf::lock_wait $string
		249
		250	Wait until the given lock is available. See cf::lock_acquire.
		251
		252	=item my $lock = cf::lock_acquire $string
		253
		254	Wait until the given lock is available and then acquires it and returns
		255	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		256	for example when the coroutine gets canceled), the lock is automatically
		257	returned.
		258
		259	Lock names should begin with a unique identifier (for example, cf::map::find
		260	uses map_find and cf::map::load uses map_load).
		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
		266	=cut
		267
		268	our %LOCK;
		269
		270	sub lock_wait($) {
		271	my ($key) = @_;
		272
		273	# wait for lock, if any
		274	while ($LOCK{$key}) {
		275	push @{ $LOCK{$key} }, $Coro::current;
		276	Coro::schedule;
		277	}
		278	}
		279
		280	sub lock_acquire($) {
		281	my ($key) = @_;
		282
		283	# wait, to be sure we are not locked
		284	lock_wait $key;
		285
		286	$LOCK{$key} = [];
		287
		288	Coro::guard {
		289	# wake up all waiters, to be on the safe side
		290	$_->ready for @{ delete $LOCK{$key} };
		291	}
		292	}
		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
		300	sub freeze_mainloop {
		301	return unless $TICK_WATCHER->is_active;
		302
		303	my $guard = Coro::guard {
		304	$TICK_WATCHER->start;
		305	};
		306	$TICK_WATCHER->stop;
		307	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
		319
		320	=item cf::sync_job { BLOCK }
		321
		322	The design of crossfire+ requires that the main coro ($Coro::main) is
		323	always able to handle events or runnable, as crossfire+ is only partly
		324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		325
		326	If it must be done, put the blocking parts into C<sync_job>. This will run
		327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($job) = @_;
		335
		336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
		339	# this is the main coro, too bad, we have to block
		340	# till the operation succeeds, freezing the server :/
		341
		342	# TODO: use suspend/resume instead
		343	# (but this is cancel-safe)
		344	my $freeze_guard = freeze_mainloop;
		345
		346	my $busy = 1;
		347	my @res;
		348
		349	(async {
		350	@res = eval { $job->() };
		351	warn $@ if $@;
		352	undef $busy;
		353	})->prio (Coro::PRIO_MAX);
		354
		355	while ($busy) {
		356	Coro::cede or Event::one_event;
		357	}
		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
		366	wantarray ? @res : $res[0]
		367	} else {
		368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
		371	}
		372	}
		373
		374	=item $coro = cf::async_ext { BLOCK }
		375
		376	Like async, but this coro is automatically being canceled when the
		377	extension calling this is being unloaded.
		378
		379	=cut
		380
		381	sub async_ext(&) {
81	my $event_code = shift;	382	my $cb = shift;
82		383
83	my $cb = $hook[$event_code]{$extension}	384	my $coro = &Coro::async ($cb);
		385
		386	$coro->on_destroy (sub {
		387	delete $EXT_CORO{$coro+0};
		388	});
		389	$EXT_CORO{$coro+0} = $coro;
		390
		391	$coro
		392	}
		393
		394	sub write_runtime {
		395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	IO::AIO::aio_utime $runtime, undef, undef;
		401
		402	my $guard = cf::lock_acquire "write_runtime";
		403
		404	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
84	or return;	405	or return;
85		406
86	&$cb	407	my $value = $cf::RUNTIME + 90 + 10;
87	}	408	# 10 is the runtime save interval, for a monotonic clock
		409	# 60 allows for the watchdog to kill the server.
88		410
89	sub inject_global_event {	411	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		412	and return;
		413
		414	# always fsync - this file is important
		415	aio_fsync $fh
		416	and return;
		417
		418	# touch it again to show we are up-to-date
		419	aio_utime $fh, undef, undef;
		420
		421	close $fh
		422	or return;
		423
		424	aio_rename "$runtime~", $runtime
		425	and return;
		426
		427	warn "runtime file written.\n";#d#
		428
		429	1
		430	}
		431
		432	=item cf::datalog type => key => value, ...
		433
		434	Log a datalog packet of the given type with the given key-value pairs.
		435
		436	=cut
		437
		438	sub datalog($@) {
		439	my ($type, %kv) = @_;
		440	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		441	}
		442
		443	=back
		444
		445	=cut
		446
		447	#############################################################################
		448
		449	=head2 ATTACHABLE OBJECTS
		450
		451	Many objects in crossfire are so-called attachable objects. That means you can
		452	attach callbacks/event handlers (a collection of which is called an "attachment")
		453	to it. All such attachable objects support the following methods.
		454
		455	In the following description, CLASS can be any of C<global>, C<object>
		456	C<player>, C<client> or C<map> (i.e. the attachable objects in
		457	crossfire+).
		458
		459	=over 4
		460
		461	=item $attachable->attach ($attachment, key => $value...)
		462
		463	=item $attachable->detach ($attachment)
		464
		465	Attach/detach a pre-registered attachment to a specific object and give it
		466	the specified key/value pairs as arguments.
		467
		468	Example, attach a minesweeper attachment to the given object, making it a
		469	10x10 minesweeper game:
		470
		471	$obj->attach (minesweeper => width => 10, height => 10);
		472
		473	=item $bool = $attachable->attached ($name)
		474
		475	Checks wether the named attachment is currently attached to the object.
		476
		477	=item cf::CLASS->attach ...
		478
		479	=item cf::CLASS->detach ...
		480
		481	Define an anonymous attachment and attach it to all objects of the given
		482	CLASS. See the next function for an explanation of its arguments.
		483
		484	You can attach to global events by using the C<cf::global> class.
		485
		486	Example, log all player logins:
		487
		488	cf::player->attach (
		489	on_login => sub {
		490	my ($pl) = @_;
		491	...
		492	},
		493	);
		494
		495	Example, attach to the jeweler skill:
		496
		497	cf::object->attach (
		498	type => cf::SKILL,
		499	subtype => cf::SK_JEWELER,
		500	on_use_skill => sub {
		501	my ($sk, $ob, $part, $dir, $msg) = @_;
		502	...
		503	},
		504	);
		505
		506	=item cf::CLASS::attachment $name, ...
		507
		508	Register an attachment by C<$name> through which attachable objects of the
		509	given CLASS can refer to this attachment.
		510
		511	Some classes such as crossfire maps and objects can specify attachments
		512	that are attached at load/instantiate time, thus the need for a name.
		513
		514	These calls expect any number of the following handler/hook descriptions:
		515
		516	=over 4
		517
		518	=item prio => $number
		519
		520	Set the priority for all following handlers/hooks (unless overwritten
		521	by another C<prio> setting). Lower priority handlers get executed
		522	earlier. The default priority is C<0>, and many built-in handlers are
		523	registered at priority C<-1000>, so lower priorities should not be used
		524	unless you know what you are doing.
		525
		526	=item type => $type
		527
		528	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		529	given type of objects only (the additional parameter C<subtype> can be
		530	used to further limit to the given subtype).
		531
		532	=item on_I<event> => \&cb
		533
		534	Call the given code reference whenever the named event happens (event is
		535	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		536	handlers are recognised generally depends on the type of object these
		537	handlers attach to).
		538
		539	See F<include/eventinc.h> for the full list of events supported, and their
		540	class.
		541
		542	=item package => package::
		543
		544	Look for sub functions of the name C<< on_I<event> >> in the given
		545	package and register them. Only handlers for eevents supported by the
		546	object/class are recognised.
		547
		548	=back
		549
		550	Example, define an attachment called "sockpuppet" that calls the given
		551	event handler when a monster attacks:
		552
		553	cf::object::attachment sockpuppet =>
		554	on_skill_attack => sub {
		555	my ($self, $victim) = @_;
		556	...
		557	}
		558	}
		559
		560	=item $attachable->valid
		561
		562	Just because you have a perl object does not mean that the corresponding
		563	C-level object still exists. If you try to access an object that has no
		564	valid C counterpart anymore you get an exception at runtime. This method
		565	can be used to test for existence of the C object part without causing an
		566	exception.
		567
		568	=cut
		569
		570	# the following variables are defined in .xs and must not be re-created
		571	our @CB_GLOBAL = (); # registry for all global events
		572	our @CB_ATTACHABLE = (); # registry for all attachables
		573	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		574	our @CB_PLAYER = ();
		575	our @CB_CLIENT = ();
		576	our @CB_TYPE = (); # registry for type (cf-object class) based events
		577	our @CB_MAP = ();
		578
		579	my %attachment;
		580
		581	sub cf::attachable::thawer_merge {
		582	# simply override everything except _meta
		583	local $_[0]{_meta};
		584	%{$_[0]} = %{$_[1]};
		585	}
		586
		587	sub _attach_cb($$$$) {
		588	my ($registry, $event, $prio, $cb) = @_;
		589
		590	use sort 'stable';
		591
		592	$cb = [$prio, $cb];
		593
		594	@{$registry->[$event]} = sort
		595	{ $a->[0] cmp $b->[0] }
		596	@{$registry->[$event] || []}, $cb;
		597	}
		598
		599	# hack
		600	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		601
		602	# attach handles attaching event callbacks
		603	# the only thing the caller has to do is pass the correct
		604	# registry (== where the callback attaches to).
		605	sub _attach {
		606	my ($registry, $klass, @arg) = @_;
		607
		608	my $object_type;
		609	my $prio = 0;
		610	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		611
		612	#TODO: get rid of this hack
		613	if ($attachable_klass{$klass}) {
		614	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		615	}
		616
		617	while (@arg) {
		618	my $type = shift @arg;
		619
		620	if ($type eq "prio") {
		621	$prio = shift @arg;
		622
		623	} elsif ($type eq "type") {
		624	$object_type = shift @arg;
		625	$registry = $CB_TYPE[$object_type] ||= [];
		626
		627	} elsif ($type eq "subtype") {
		628	defined $object_type or Carp::croak "subtype specified without type";
		629	my $object_subtype = shift @arg;
		630	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		631
		632	} elsif ($type eq "package") {
		633	my $pkg = shift @arg;
		634
		635	while (my ($name, $id) = each %cb_id) {
		636	if (my $cb = $pkg->can ($name)) {
		637	_attach_cb $registry, $id, $prio, $cb;
		638	}
		639	}
		640
		641	} elsif (exists $cb_id{$type}) {
		642	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		643
		644	} elsif (ref $type) {
		645	warn "attaching objects not supported, ignoring.\n";
		646
		647	} else {
		648	shift @arg;
		649	warn "attach argument '$type' not supported, ignoring.\n";
		650	}
		651	}
		652	}
		653
		654	sub _object_attach {
		655	my ($obj, $name, %arg) = @_;
		656
		657	return if exists $obj->{_attachment}{$name};
		658
		659	if (my $attach = $attachment{$name}) {
		660	my $registry = $obj->registry;
		661
		662	for (@$attach) {
		663	my ($klass, @attach) = @$_;
		664	_attach $registry, $klass, @attach;
		665	}
		666
		667	$obj->{$name} = \%arg;
		668	} else {
		669	warn "object uses attachment '$name' that is not available, postponing.\n";
		670	}
		671
		672	$obj->{_attachment}{$name} = undef;
		673	}
		674
		675	sub cf::attachable::attach {
		676	if (ref $_[0]) {
		677	_object_attach @_;
		678	} else {
		679	_attach shift->_attach_registry, @_;
		680	}
		681	_recalc_want;
		682	};
		683
		684	# all those should be optimised
		685	sub cf::attachable::detach {
		686	my ($obj, $name) = @_;
		687
		688	if (ref $obj) {
		689	delete $obj->{_attachment}{$name};
		690	reattach ($obj);
		691	} else {
		692	Carp::croak "cannot, currently, detach class attachments";
		693	}
		694	_recalc_want;
		695	};
		696
		697	sub cf::attachable::attached {
		698	my ($obj, $name) = @_;
		699
		700	exists $obj->{_attachment}{$name}
		701	}
		702
		703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		704	eval "#line " . __LINE__ . " 'cf.pm'
		705	sub cf::\L$klass\E::_attach_registry {
		706	(\\\@CB_$klass, KLASS_$klass)
		707	}
		708
		709	sub cf::\L$klass\E::attachment {
		710	my \$name = shift;
		711
		712	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		713	}
		714	";
		715	die if $@;
		716	}
		717
		718	our $override;
		719	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		720
		721	sub override {
		722	$override = 1;
		723	@invoke_results = ();
		724	}
		725
		726	sub do_invoke {
90	my $event = shift;	727	my $event = shift;
		728	my $callbacks = shift;
91		729
92	my $cb = $hook[$event]	730	@invoke_results = ();
		731
		732	local $override;
		733
		734	for (@$callbacks) {
		735	eval { &{$_->[1]} };
		736
		737	if ($@) {
		738	warn "$@";
		739	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		740	override;
		741	}
		742
		743	return 1 if $override;
		744	}
		745
		746	0
		747	}
		748
		749	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		750
		751	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		752
		753	Generate an object-specific event with the given arguments.
		754
		755	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		756	removed in future versions), and there is no public API to access override
		757	results (if you must, access C<@cf::invoke_results> directly).
		758
		759	=back
		760
		761	=cut
		762
		763	#############################################################################
		764	# object support
		765
		766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
		768	my ($obj) = @_;
		769
		770	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		771
		772	my $registry = $obj->registry;
		773
		774	@$registry = ();
		775
		776	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		777
		778	for my $name (keys %{ $obj->{_attachment} || {} }) {
		779	if (my $attach = $attachment{$name}) {
		780	for (@$attach) {
		781	my ($klass, @attach) = @$_;
		782	_attach $registry, $klass, @attach;
		783	}
		784	} else {
		785	warn "object uses attachment '$name' that is not available, postponing.\n";
		786	}
		787	}
		788	}
		789
		790	cf::attachable->attach (
		791	prio => -1000000,
		792	on_instantiate => sub {
		793	my ($obj, $data) = @_;
		794
		795	$data = from_json $data;
		796
		797	for (@$data) {
		798	my ($name, $args) = @$_;
		799
		800	$obj->attach ($name, %{$args || {} });
		801	}
		802	},
		803	on_reattach => \&reattach,
		804	on_clone => sub {
		805	my ($src, $dst) = @_;
		806
		807	@{$dst->registry} = @{$src->registry};
		808
		809	%$dst = %$src;
		810
		811	%{$dst->{_attachment}} = %{$src->{_attachment}}
		812	if exists $src->{_attachment};
		813	},
		814	);
		815
		816	sub object_freezer_save {
		817	my ($filename, $rdata, $objs) = @_;
		818
		819	sync_job {
		820	if (length $$rdata) {
		821	warn sprintf "saving %s (%d,%d)\n",
		822	$filename, length $$rdata, scalar @$objs;
		823
		824	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		825	chmod SAVE_MODE, $fh;
		826	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		827	aio_fsync $fh if $cf::USE_FSYNC;
		828	close $fh;
		829
		830	if (@$objs) {
		831	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		832	chmod SAVE_MODE, $fh;
		833	my $data = Storable::nfreeze { version => 1, objs => $objs };
		834	aio_write $fh, 0, (length $data), $data, 0;
		835	aio_fsync $fh if $cf::USE_FSYNC;
		836	close $fh;
		837	aio_rename "$filename.pst~", "$filename.pst";
		838	}
		839	} else {
		840	aio_unlink "$filename.pst";
		841	}
		842
		843	aio_rename "$filename~", $filename;
		844	} else {
		845	warn "FATAL: $filename~: $!\n";
		846	}
		847	} else {
		848	aio_unlink $filename;
		849	aio_unlink "$filename.pst";
		850	}
		851	}
		852	}
		853
		854	sub object_freezer_as_string {
		855	my ($rdata, $objs) = @_;
		856
		857	use Data::Dumper;
		858
		859	$$rdata . Dumper $objs
		860	}
		861
		862	sub object_thawer_load {
		863	my ($filename) = @_;
		864
		865	my ($data, $av);
		866
		867	(aio_load $filename, $data) >= 0
93	or return;	868	or return;
94		869
95	List::Util::max map &$_, values %$cb	870	unless (aio_stat "$filename.pst") {
96	}	871	(aio_load "$filename.pst", $av) >= 0
97		872	or return;
98	sub inject_command {	873	$av = eval { (Storable::thaw $av)->{objs} };
99	my ($name, $obj, $params) = @_;
100
101	for my $cmd (@{ $command{$name} }) {
102	$cmd->[1]->($obj, $params);
103	}	874	}
104		875
105	-1	876	warn sprintf "loading %s (%d)\n",
		877	$filename, length $data, scalar @{$av || []};#d#
		878	return ($data, $av);
106	}	879	}
		880
		881	#############################################################################
		882	# command handling &c
		883
		884	=item cf::register_command $name => \&callback($ob,$args);
		885
		886	Register a callback for execution when the client sends the user command
		887	$name.
		888
		889	=cut
107		890
108	sub register_command {	891	sub register_command {
109	my ($name, $time, $cb) = @_;	892	my ($name, $cb) = @_;
110		893
111	my $caller = caller;	894	my $caller = caller;
112	#warn "registering command '$name/$time' to '$caller'";	895	#warn "registering command '$name/$time' to '$caller'";
113		896
114	push @{ $command{$name} }, [$time, $cb, $caller];	897	push @{ $COMMAND{$name} }, [$caller, $cb];
115	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
116	}	898	}
		899
		900	=item cf::register_extcmd $name => \&callback($pl,$packet);
		901
		902	Register a callbackf ro execution when the client sends an extcmd packet.
		903
		904	If the callback returns something, it is sent back as if reply was being
		905	called.
		906
		907	=cut
117		908
118	sub register_extcmd {	909	sub register_extcmd {
119	my ($name, $cb) = @_;	910	my ($name, $cb) = @_;
120		911
121	my $caller = caller;	912	$EXTCMD{$name} = $cb;
122	#warn "registering extcmd '$name' to '$caller'";
123
124	$extcmd{$name} = [$cb, $caller];
125	}	913	}
126		914
127	sub register {	915	cf::player->attach (
128	my ($base, $pkg) = @_;	916	on_command => sub {
		917	my ($pl, $name, $params) = @_;
129		918
130	for my $idx (0 .. $#EVENT) {	919	my $cb = $COMMAND{$name}
131	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	920	or return;
132	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	921
133	$hook[$idx]{$base} = $ref;	922	for my $cmd (@$cb) {
		923	$cmd->[1]->($pl->ob, $params);
134	}	924	}
		925
		926	cf::override;
135	}	927	},
136	}	928	on_extcmd => sub {
		929	my ($pl, $buf) = @_;
		930
		931	my $msg = eval { from_json $buf };
		932
		933	if (ref $msg) {
		934	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		935	if (my %reply = $cb->($pl, $msg)) {
		936	$pl->ext_reply ($msg->{msgid}, %reply);
		937	}
		938	}
		939	} else {
		940	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		941	}
		942
		943	cf::override;
		944	},
		945	);
137		946
138	sub load_extension {	947	sub load_extension {
139	my ($path) = @_;	948	my ($path) = @_;
140		949
141	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	950	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
142	my $base = $1;	951	my $base = $1;
143	my $pkg = $1;	952	my $pkg = $1;
144	$pkg =~ s/[^[:word:]]/_/g;	953	$pkg =~ s/[^[:word:]]/_/g;
145	$pkg = "cf::ext::$pkg";	954	$pkg = "ext::$pkg";
146		955
147	warn "loading '$path' into '$pkg'\n";	956	warn "... loading '$path' into '$pkg'\n";
148		957
149	open my $fh, "<:utf8", $path	958	open my $fh, "<:utf8", $path
150	or die "$path: $!";	959	or die "$path: $!";
151		960
152	my $source =	961	my $source =
153	"package $pkg; use strict; use utf8;\n"	962	"package $pkg; use strict; use utf8;\n"
154	. "#line 1 \"$path\"\n{\n"	963	. "#line 1 \"$path\"\n{\n"
155	. (do { local $/; <$fh> })	964	. (do { local $/; <$fh> })
156	. "\n};\n1";	965	. "\n};\n1";
157		966
158	eval $source	967	unless (eval $source) {
159	or die "$path: $@";	968	my $msg = $@ ? "$path: $@\n"
		969	: "extension disabled.\n";
		970	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		971	warn $@;
		972	warn "mandatory extension failed to load, exiting.\n";
		973	exit 1;
		974	}
		975	die $@;
		976	}
160		977
161	push @exts, $pkg;	978	push @EXTS, $pkg;
162	$ext_pkg{$base} = $pkg;
163
164	# no strict 'refs';
165	# @{"$pkg\::ISA"} = cf::ext::;
166
167	register $base, $pkg;
168	}
169
170	sub unload_extension {
171	my ($pkg) = @_;
172
173	warn "removing extension $pkg\n";
174
175	# remove hooks
176	for my $idx (0 .. $#EVENT) {
177	delete $hook[$idx]{$pkg};
178	}
179
180	# remove commands
181	for my $name (keys %command) {
182	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
183
184	if (@cb) {
185	$command{$name} = \@cb;
186	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
187	} else {
188	delete $command{$name};
189	delete $COMMAND{"$name\000"};
190	}
191	}
192
193	# remove extcmds
194	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
195	delete $extcmd{$name};
196	}
197
198	Symbol::delete_package $pkg;
199	}	979	}
200		980
201	sub load_extensions {	981	sub load_extensions {
202	my $LIBDIR = maps_directory "perl";
203
204	for my $ext (<$LIBDIR/*.ext>) {	982	for my $ext (<$LIBDIR/*.ext>) {
205	next unless -r $ext;	983	next unless -r $ext;
206	eval {	984	eval {
207	load_extension $ext;	985	load_extension $ext;
208	1	986	1
209	} or warn "$ext not loaded: $@";	987	} or warn "$ext not loaded: $@";
210	}	988	}
211	}	989	}
212		990
213	register_command "perl-reload", 0, sub {	991	#############################################################################
		992
		993	=head2 CORE EXTENSIONS
		994
		995	Functions and methods that extend core crossfire objects.
		996
		997	=cut
		998
		999	package cf::player;
		1000
		1001	use Coro::AIO;
		1002
		1003	=head3 cf::player
		1004
		1005	=over 4
		1006
		1007	=item cf::player::find $login
		1008
		1009	Returns the given player object, loading it if necessary (might block).
		1010
		1011	=cut
		1012
		1013	sub playerdir($) {
		1014	"$PLAYERDIR/"
		1015	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1016	}
		1017
		1018	sub path($) {
		1019	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1020
		1021	(playerdir $login) . "/playerdata"
		1022	}
		1023
		1024	sub find_active($) {
		1025	$cf::PLAYER{$_[0]}
		1026	and $cf::PLAYER{$_[0]}->active
		1027	and $cf::PLAYER{$_[0]}
		1028	}
		1029
		1030	sub exists($) {
		1031	my ($login) = @_;
		1032
		1033	$cf::PLAYER{$login}
		1034	or cf::sync_job { !aio_stat path $login }
		1035	}
		1036
		1037	sub find($) {
		1038	return $cf::PLAYER{$_[0]} || do {
		1039	my $login = $_[0];
		1040
		1041	my $guard = cf::lock_acquire "user_find:$login";
		1042
		1043	$cf::PLAYER{$_[0]} || do {
		1044	# rename old playerfiles to new ones
		1045	#TODO: remove when no longer required
		1046	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1047	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1048	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1049	aio_unlink +(playerdir $login) . "/$login.pl";
		1050
		1051	my $pl = load_pl path $login
		1052	or return;
		1053	$cf::PLAYER{$login} = $pl
		1054	}
		1055	}
		1056	}
		1057
		1058	sub save($) {
		1059	my ($pl) = @_;
		1060
		1061	return if $pl->{deny_save};
		1062
		1063	my $path = path $pl;
		1064	my $guard = cf::lock_acquire "user_save:$path";
		1065
		1066	return if $pl->{deny_save};
		1067
		1068	aio_mkdir playerdir $pl, 0770;
		1069	$pl->{last_save} = $cf::RUNTIME;
		1070
		1071	$pl->save_pl ($path);
		1072	Coro::cede;
		1073	}
		1074
		1075	sub new($) {
		1076	my ($login) = @_;
		1077
		1078	my $self = create;
		1079
		1080	$self->ob->name ($login);
		1081	$self->{deny_save} = 1;
		1082
		1083	$cf::PLAYER{$login} = $self;
		1084
		1085	$self
		1086	}
		1087
		1088	=item $pl->quit_character
		1089
		1090	Nukes the player without looking back. If logged in, the connection will
		1091	be destroyed. May block for a long time.
		1092
		1093	=cut
		1094
		1095	sub quit_character {
		1096	my ($pl) = @_;
		1097
		1098	my $name = $pl->ob->name;
		1099
		1100	$pl->{deny_save} = 1;
		1101	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1102
		1103	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1104	$pl->deactivate;
		1105	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1106	$pl->ns->destroy if $pl->ns;
		1107
		1108	my $path = playerdir $pl;
		1109	my $temp = "$path~$cf::RUNTIME~deleting~";
		1110	aio_rename $path, $temp;
		1111	delete $cf::PLAYER{$pl->ob->name};
		1112	$pl->destroy;
		1113
		1114	my $prefix = qr<^~\Q$name\E/>;
		1115
		1116	# nuke player maps
		1117	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1118
		1119	IO::AIO::aio_rmtree $temp;
		1120	}
		1121
		1122	=item $pl->kick
		1123
		1124	Kicks a player out of the game. This destroys the connection.
		1125
		1126	=cut
		1127
		1128	sub kick {
		1129	my ($pl, $kicker) = @_;
		1130
		1131	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1132	$pl->killer ("kicked");
		1133	$pl->ns->destroy;
		1134	}
		1135
		1136	=item cf::player::list_logins
		1137
		1138	Returns am arrayref of all valid playernames in the system, can take a
		1139	while and may block, so not sync_job-capable, ever.
		1140
		1141	=cut
		1142
		1143	sub list_logins {
		1144	my $dirs = aio_readdir $PLAYERDIR
		1145	or return [];
		1146
		1147	my @logins;
		1148
		1149	for my $login (@$dirs) {
		1150	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1151	aio_read $fh, 0, 512, my $buf, 0 or next;
		1152	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1153
		1154	utf8::decode $login;
		1155	push @logins, $login;
		1156	}
		1157
		1158	\@logins
		1159	}
		1160
		1161	=item $player->maps
		1162
		1163	Returns an arrayref of map paths that are private for this
		1164	player. May block.
		1165
		1166	=cut
		1167
		1168	sub maps($) {
		1169	my ($pl) = @_;
		1170
		1171	$pl = ref $pl ? $pl->ob->name : $pl;
		1172
		1173	my $files = aio_readdir playerdir $pl
		1174	or return;
		1175
		1176	my @paths;
		1177
		1178	for (@$files) {
		1179	utf8::decode $_;
		1180	next if /\.(?:pl|pst)$/;
		1181	next unless /^$PATH_SEP/o;
		1182
		1183	push @paths, cf::map::normalise "~$pl/$_";
		1184	}
		1185
		1186	\@paths
		1187	}
		1188
		1189	=item $player->ext_reply ($msgid, %msg)
		1190
		1191	Sends an ext reply to the player.
		1192
		1193	=cut
		1194
		1195	sub ext_reply($$%) {
		1196	my ($self, $id, %msg) = @_;
		1197
		1198	$msg{msgid} = $id;
		1199
		1200	$self->send ("ext " . cf::to_json \%msg);
		1201	}
		1202
		1203	=item $player->ext_event ($type, %msg)
		1204
		1205	Sends an ext event to the client.
		1206
		1207	=cut
		1208
		1209	sub ext_event($$%) {
		1210	my ($self, $type, %msg) = @_;
		1211
		1212	$self->ns->ext_event ($type, %msg);
		1213	}
		1214
		1215	=head3 cf::region
		1216
		1217	=over 4
		1218
		1219	=cut
		1220
		1221	package cf::region;
		1222
		1223	=item cf::region::find_by_path $path
		1224
		1225	Tries to decuce the probable region for a map knowing only its path.
		1226
		1227	=cut
		1228
		1229	sub find_by_path($) {
		1230	my ($path) = @_;
		1231
		1232	my ($match, $specificity);
		1233
		1234	for my $region (list) {
		1235	if ($region->match && $path =~ $region->match) {
		1236	($match, $specificity) = ($region, $region->specificity)
		1237	if $region->specificity > $specificity;
		1238	}
		1239	}
		1240
		1241	$match
		1242	}
		1243
		1244	=back
		1245
		1246	=head3 cf::map
		1247
		1248	=over 4
		1249
		1250	=cut
		1251
		1252	package cf::map;
		1253
		1254	use Fcntl;
		1255	use Coro::AIO;
		1256
		1257	use overload
		1258	'""' => \&as_string,
		1259	fallback => 1;
		1260
		1261	our $MAX_RESET = 3600;
		1262	our $DEFAULT_RESET = 3000;
		1263
		1264	sub generate_random_map {
		1265	my ($self, $rmp) = @_;
		1266	# mit "rum" bekleckern, nicht
		1267	$self->_create_random_map (
		1268	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1269	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1270	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1271	$rmp->{exit_on_final_map},
		1272	$rmp->{xsize}, $rmp->{ysize},
		1273	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1274	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1275	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1276	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1277	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1278	(cf::region::find $rmp->{region}), $rmp->{custom}
		1279	)
		1280	}
		1281
		1282	=item cf::map->register ($regex, $prio)
		1283
		1284	Register a handler for the map path matching the given regex at the
		1285	givne priority (higher is better, built-in handlers have priority 0, the
		1286	default).
		1287
		1288	=cut
		1289
		1290	sub register {
		1291	my (undef, $regex, $prio) = @_;
		1292	my $pkg = caller;
		1293
		1294	no strict;
		1295	push @{"$pkg\::ISA"}, __PACKAGE__;
		1296
		1297	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1298	}
		1299
		1300	# also paths starting with '/'
		1301	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1302
		1303	sub thawer_merge {
		1304	my ($self, $merge) = @_;
		1305
		1306	# we have to keep some variables in memory intact
		1307	local $self->{path};
		1308	local $self->{load_path};
		1309	local $self->{deny_save};
		1310	local $self->{deny_reset};
		1311
		1312	$self->SUPER::thawer_merge ($merge);
		1313	}
		1314
		1315	sub normalise {
		1316	my ($path, $base) = @_;
		1317
		1318	$path = "$path"; # make sure its a string
		1319
		1320	$path =~ s/\.map$//;
		1321
		1322	# map plan:
		1323	#
		1324	# /! non-realised random map exit (special hack!)
		1325	# {... are special paths that are not being touched
		1326	# ?xxx/... are special absolute paths
		1327	# ?random/... random maps
		1328	# /... normal maps
		1329	# ~user/... per-player map of a specific user
		1330
		1331	$path =~ s/$PATH_SEP/\//go;
		1332
		1333	# treat it as relative path if it starts with
		1334	# something that looks reasonable
		1335	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1336	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1337
		1338	$base =~ s{[^/]+/?$}{};
		1339	$path = "$base/$path";
		1340	}
		1341
		1342	for ($path) {
		1343	redo if s{//}{/};
		1344	redo if s{/\.?/}{/};
		1345	redo if s{/[^/]+/\.\./}{/};
		1346	}
		1347
		1348	$path
		1349	}
		1350
		1351	sub new_from_path {
		1352	my (undef, $path, $base) = @_;
		1353
		1354	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1355
		1356	$path = normalise $path, $base;
		1357
		1358	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1359	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1360	my $self = bless cf::map::new, $pkg;
		1361	$self->{path} = $path; $self->path ($path);
		1362	$self->init; # pass $1 etc.
		1363	return $self;
		1364	}
		1365	}
		1366
		1367	Carp::carp "unable to resolve path '$path' (base '$base').";
		1368	()
		1369	}
		1370
		1371	sub init {
		1372	my ($self) = @_;
		1373
		1374	$self
		1375	}
		1376
		1377	sub as_string {
		1378	my ($self) = @_;
		1379
		1380	"$self->{path}"
		1381	}
		1382
		1383	# the displayed name, this is a one way mapping
		1384	sub visible_name {
		1385	&as_string
		1386	}
		1387
		1388	# the original (read-only) location
		1389	sub load_path {
		1390	my ($self) = @_;
		1391
		1392	"$MAPDIR/$self->{path}.map"
		1393	}
		1394
		1395	# the temporary/swap location
		1396	sub save_path {
		1397	my ($self) = @_;
		1398
		1399	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1400	"$TMPDIR/$path.map"
		1401	}
		1402
		1403	# the unique path, undef == no special unique path
		1404	sub uniq_path {
		1405	my ($self) = @_;
		1406
		1407	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1408	"$UNIQUEDIR/$path"
		1409	}
		1410
		1411	# and all this just because we cannot iterate over
		1412	# all maps in C++...
		1413	sub change_all_map_light {
		1414	my ($change) = @_;
		1415
		1416	$_->change_map_light ($change)
		1417	for grep $_->outdoor, values %cf::MAP;
		1418	}
		1419
		1420	sub unlink_save {
		1421	my ($self) = @_;
		1422
		1423	utf8::encode (my $save = $self->save_path);
		1424	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1425	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1426	}
		1427
		1428	sub load_header_from($) {
		1429	my ($self, $path) = @_;
		1430
		1431	utf8::encode $path;
		1432	#aio_open $path, O_RDONLY, 0
		1433	# or return;
		1434
		1435	$self->_load_header ($path)
		1436	or return;
		1437
		1438	$self->{load_path} = $path;
		1439
		1440	1
		1441	}
		1442
		1443	sub load_header_orig {
		1444	my ($self) = @_;
		1445
		1446	$self->load_header_from ($self->load_path)
		1447	}
		1448
		1449	sub load_header_temp {
		1450	my ($self) = @_;
		1451
		1452	$self->load_header_from ($self->save_path)
		1453	}
		1454
		1455	sub prepare_temp {
		1456	my ($self) = @_;
		1457
		1458	$self->last_access ((delete $self->{last_access})
		1459	|| $cf::RUNTIME); #d#
		1460	# safety
		1461	$self->{instantiate_time} = $cf::RUNTIME
		1462	if $self->{instantiate_time} > $cf::RUNTIME;
		1463	}
		1464
		1465	sub prepare_orig {
		1466	my ($self) = @_;
		1467
		1468	$self->{load_original} = 1;
		1469	$self->{instantiate_time} = $cf::RUNTIME;
		1470	$self->last_access ($cf::RUNTIME);
		1471	$self->instantiate;
		1472	}
		1473
		1474	sub load_header {
		1475	my ($self) = @_;
		1476
		1477	if ($self->load_header_temp) {
		1478	$self->prepare_temp;
		1479	} else {
		1480	$self->load_header_orig
		1481	or return;
		1482	$self->prepare_orig;
		1483	}
		1484
		1485	$self->default_region (cf::region::find_by_path $self->{path})
		1486	unless $self->default_region;
		1487
		1488	1
		1489	}
		1490
		1491	sub find;
		1492	sub find {
		1493	my ($path, $origin) = @_;
		1494
		1495	$path = normalise $path, $origin && $origin->path;
		1496
		1497	cf::lock_wait "map_find:$path";
		1498
		1499	$cf::MAP{$path} || do {
		1500	my $guard = cf::lock_acquire "map_find:$path";
		1501	my $map = new_from_path cf::map $path
		1502	or return;
		1503
		1504	$map->{last_save} = $cf::RUNTIME;
		1505
		1506	$map->load_header
		1507	or return;
		1508
		1509	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1510	# doing this can freeze the server in a sync job, obviously
		1511	#$cf::WAIT_FOR_TICK->wait;
		1512	$map->reset;
		1513	undef $guard;
		1514	return find $path;
		1515	}
		1516
		1517	$cf::MAP{$path} = $map
		1518	}
		1519	}
		1520
		1521	sub pre_load { }
		1522	sub post_load { }
		1523
		1524	sub load {
		1525	my ($self) = @_;
		1526
		1527	local $self->{deny_reset} = 1; # loading can take a long time
		1528
		1529	my $path = $self->{path};
		1530
		1531	{
		1532	my $guard = cf::lock_acquire "map_load:$path";
		1533
		1534	return if $self->in_memory != cf::MAP_SWAPPED;
		1535
		1536	$self->in_memory (cf::MAP_LOADING);
		1537
		1538	$self->alloc;
		1539
		1540	$self->pre_load;
		1541	Coro::cede;
		1542
		1543	$self->_load_objects ($self->{load_path}, 1)
		1544	or return;
		1545
		1546	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1547	if delete $self->{load_original};
		1548
		1549	if (my $uniq = $self->uniq_path) {
		1550	utf8::encode $uniq;
		1551	if (aio_open $uniq, O_RDONLY, 0) {
		1552	$self->clear_unique_items;
		1553	$self->_load_objects ($uniq, 0);
		1554	}
		1555	}
		1556
		1557	Coro::cede;
		1558	# now do the right thing for maps
		1559	$self->link_multipart_objects;
		1560	$self->difficulty ($self->estimate_difficulty)
		1561	unless $self->difficulty;
		1562	Coro::cede;
		1563
		1564	unless ($self->{deny_activate}) {
		1565	$self->decay_objects;
		1566	$self->fix_auto_apply;
		1567	$self->update_buttons;
		1568	Coro::cede;
		1569	$self->set_darkness_map;
		1570	Coro::cede;
		1571	$self->activate;
		1572	}
		1573
		1574	$self->in_memory (cf::MAP_IN_MEMORY);
		1575	}
		1576
		1577	$self->post_load;
		1578	}
		1579
		1580	sub customise_for {
		1581	my ($self, $ob) = @_;
		1582
		1583	return find "~" . $ob->name . "/" . $self->{path}
		1584	if $self->per_player;
		1585
		1586	$self
		1587	}
		1588
		1589	# find and load all maps in the 3x3 area around a map
		1590	sub load_diag {
		1591	my ($map) = @_;
		1592
		1593	my @diag; # diagonal neighbours
		1594
		1595	for (0 .. 3) {
		1596	my $neigh = $map->tile_path ($_)
		1597	or next;
		1598	$neigh = find $neigh, $map
		1599	or next;
		1600	$neigh->load;
		1601
		1602	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1603	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1604	}
		1605
		1606	for (@diag) {
		1607	my $neigh = find @$_
		1608	or next;
		1609	$neigh->load;
		1610	}
		1611	}
		1612
		1613	sub find_sync {
		1614	my ($path, $origin) = @_;
		1615
		1616	cf::sync_job { find $path, $origin }
		1617	}
		1618
		1619	sub do_load_sync {
		1620	my ($map) = @_;
		1621
		1622	cf::sync_job { $map->load };
		1623	}
		1624
		1625	our %MAP_PREFETCH;
		1626	our $MAP_PREFETCHER = undef;
		1627
		1628	sub find_async {
		1629	my ($path, $origin) = @_;
		1630
		1631	$path = normalise $path, $origin && $origin->{path};
		1632
		1633	if (my $map = $cf::MAP{$path}) {
		1634	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1635	}
		1636
		1637	undef $MAP_PREFETCH{$path};
		1638	$MAP_PREFETCHER ||= cf::async {
		1639	while (%MAP_PREFETCH) {
		1640	for my $path (keys %MAP_PREFETCH) {
		1641	my $map = find $path
		1642	or next;
		1643	$map->load;
		1644
		1645	delete $MAP_PREFETCH{$path};
		1646	}
		1647	}
		1648	undef $MAP_PREFETCHER;
		1649	};
		1650	$MAP_PREFETCHER->prio (6);
		1651
		1652	()
		1653	}
		1654
		1655	sub save {
		1656	my ($self) = @_;
		1657
		1658	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1659
		1660	$self->{last_save} = $cf::RUNTIME;
		1661
		1662	return unless $self->dirty;
		1663
		1664	my $save = $self->save_path; utf8::encode $save;
		1665	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1666
		1667	$self->{load_path} = $save;
		1668
		1669	return if $self->{deny_save};
		1670
		1671	local $self->{last_access} = $self->last_access;#d#
		1672
		1673	cf::async {
		1674	$_->contr->save for $self->players;
		1675	};
		1676
		1677	if ($uniq) {
		1678	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1679	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1680	} else {
		1681	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1682	}
		1683	}
		1684
		1685	sub swap_out {
		1686	my ($self) = @_;
		1687
		1688	# save first because save cedes
		1689	$self->save;
		1690
		1691	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1692
		1693	return if $self->players;
		1694	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1695	return if $self->{deny_save};
		1696
		1697	$self->clear;
		1698	$self->in_memory (cf::MAP_SWAPPED);
		1699	}
		1700
		1701	sub reset_at {
		1702	my ($self) = @_;
		1703
		1704	# TODO: safety, remove and allow resettable per-player maps
		1705	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1706	return 1e99 if $self->{deny_reset};
		1707
		1708	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1709	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1710
		1711	$time + $to
		1712	}
		1713
		1714	sub should_reset {
		1715	my ($self) = @_;
		1716
		1717	$self->reset_at <= $cf::RUNTIME
		1718	}
		1719
		1720	sub reset {
		1721	my ($self) = @_;
		1722
		1723	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1724
		1725	return if $self->players;
		1726	return if $self->isa ("ext::map_per_player");#d#
		1727
		1728	warn "resetting map ", $self->path;#d#
		1729
		1730	$self->in_memory (cf::MAP_SWAPPED);
		1731
		1732	# need to save uniques path
		1733	unless ($self->{deny_save}) {
		1734	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1735
		1736	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1737	if $uniq;
		1738	}
		1739
		1740	delete $cf::MAP{$self->path};
		1741
		1742	$self->clear;
		1743
		1744	$_->clear_links_to ($self) for values %cf::MAP;
		1745
		1746	$self->unlink_save;
		1747	$self->destroy;
		1748	}
		1749
		1750	my $nuke_counter = "aaaa";
		1751
		1752	sub nuke {
		1753	my ($self) = @_;
		1754
		1755	delete $cf::MAP{$self->path};
		1756
		1757	$self->unlink_save;
		1758
		1759	bless $self, "cf::map";
		1760	delete $self->{deny_reset};
		1761	$self->{deny_save} = 1;
		1762	$self->reset_timeout (1);
		1763	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1764
		1765	$cf::MAP{$self->path} = $self;
		1766
		1767	$self->reset; # polite request, might not happen
		1768	}
		1769
		1770	=item cf::map::unique_maps
		1771
		1772	Returns an arrayref of paths of all shared maps that have
		1773	instantiated unique items. May block.
		1774
		1775	=cut
		1776
		1777	sub unique_maps() {
		1778	my $files = aio_readdir $UNIQUEDIR
		1779	or return;
		1780
		1781	my @paths;
		1782
		1783	for (@$files) {
		1784	utf8::decode $_;
		1785	next if /\.pst$/;
		1786	next unless /^$PATH_SEP/o;
		1787
		1788	push @paths, cf::map::normalise $_;
		1789	}
		1790
		1791	\@paths
		1792	}
		1793
		1794	package cf;
		1795
		1796	=back
		1797
		1798	=head3 cf::object
		1799
		1800	=cut
		1801
		1802	package cf::object;
		1803
		1804	=over 4
		1805
		1806	=item $ob->inv_recursive
		1807
		1808	Returns the inventory of the object _and_ their inventories, recursively.
		1809
		1810	=cut
		1811
		1812	sub inv_recursive_;
		1813	sub inv_recursive_ {
		1814	map { $_, inv_recursive_ $_->inv } @_
		1815	}
		1816
		1817	sub inv_recursive {
		1818	inv_recursive_ inv $_[0]
		1819	}
		1820
		1821	package cf;
		1822
		1823	=back
		1824
		1825	=head3 cf::object::player
		1826
		1827	=over 4
		1828
		1829	=item $player_object->reply ($npc, $msg[, $flags])
		1830
		1831	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1832	can be C<undef>. Does the right thing when the player is currently in a
		1833	dialogue with the given NPC character.
		1834
		1835	=cut
		1836
		1837	# rough implementation of a future "reply" method that works
		1838	# with dialog boxes.
		1839	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1840	sub cf::object::player::reply($$$;$) {
		1841	my ($self, $npc, $msg, $flags) = @_;
		1842
		1843	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1844
		1845	if ($self->{record_replies}) {
		1846	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1847	} else {
		1848	$msg = $npc->name . " says: $msg" if $npc;
		1849	$self->message ($msg, $flags);
		1850	}
		1851	}
		1852
		1853	=item $player_object->may ("access")
		1854
		1855	Returns wether the given player is authorized to access resource "access"
		1856	(e.g. "command_wizcast").
		1857
		1858	=cut
		1859
		1860	sub cf::object::player::may {
		1861	my ($self, $access) = @_;
		1862
		1863	$self->flag (cf::FLAG_WIZ) ||
		1864	(ref $cf::CFG{"may_$access"}
		1865	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1866	: $cf::CFG{"may_$access"})
		1867	}
		1868
		1869	=item $player_object->enter_link
		1870
		1871	Freezes the player and moves him/her to a special map (C<{link}>).
		1872
		1873	The player should be reasonably safe there for short amounts of time. You
		1874	I<MUST> call C<leave_link> as soon as possible, though.
		1875
		1876	Will never block.
		1877
		1878	=item $player_object->leave_link ($map, $x, $y)
		1879
		1880	Moves the player out of the special C<{link}> map onto the specified
		1881	map. If the map is not valid (or omitted), the player will be moved back
		1882	to the location he/she was before the call to C<enter_link>, or, if that
		1883	fails, to the emergency map position.
		1884
		1885	Might block.
		1886
		1887	=cut
		1888
		1889	sub link_map {
		1890	unless ($LINK_MAP) {
		1891	$LINK_MAP = cf::map::find "{link}"
		1892	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1893	$LINK_MAP->load;
		1894	}
		1895
		1896	$LINK_MAP
		1897	}
		1898
		1899	sub cf::object::player::enter_link {
		1900	my ($self) = @_;
		1901
		1902	$self->deactivate_recursive;
		1903
		1904	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1905
		1906	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1907	if $self->map && $self->map->{path} ne "{link}";
		1908
		1909	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1910	}
		1911
		1912	sub cf::object::player::leave_link {
		1913	my ($self, $map, $x, $y) = @_;
		1914
		1915	return unless $self->contr->active;
		1916
		1917	my $link_pos = delete $self->{_link_pos};
		1918
		1919	unless ($map) {
		1920	# restore original map position
		1921	($map, $x, $y) = @{ $link_pos || [] };
		1922	$map = cf::map::find $map;
		1923
		1924	unless ($map) {
		1925	($map, $x, $y) = @$EMERGENCY_POSITION;
		1926	$map = cf::map::find $map
		1927	or die "FATAL: cannot load emergency map\n";
		1928	}
		1929	}
		1930
		1931	($x, $y) = (-1, -1)
		1932	unless (defined $x) && (defined $y);
		1933
		1934	# use -1 or undef as default coordinates, not 0, 0
		1935	($x, $y) = ($map->enter_x, $map->enter_y)
		1936	if $x <=0 && $y <= 0;
		1937
		1938	$map->load;
		1939	$map->load_diag;
		1940
		1941	return unless $self->contr->active;
		1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1945	$self->enter_map ($map, $x, $y);
		1946	}
		1947
		1948	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1949
		1950	Moves the player to the given map-path and coordinates by first freezing
		1951	her, loading and preparing them map, calling the provided $check callback
		1952	that has to return the map if sucecssful, and then unfreezes the player on
		1953	the new (success) or old (failed) map position.
		1954
		1955	=cut
		1956
		1957	our $GOTOGEN;
		1958
		1959	sub cf::object::player::goto {
		1960	my ($self, $path, $x, $y, $check) = @_;
		1961
		1962	# do generation counting so two concurrent goto's will be executed in-order
		1963	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1964
		1965	$self->enter_link;
		1966
		1967	(async {
		1968	my $map = eval {
		1969	my $map = cf::map::find $path;
		1970
		1971	if ($map) {
		1972	$map = $map->customise_for ($self);
		1973	$map = $check->($map) if $check && $map;
		1974	} else {
		1975	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1976	}
		1977
		1978	$map
		1979	};
		1980
		1981	if ($@) {
		1982	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1983	LOG llevError | logBacktrace, Carp::longmess $@;
		1984	}
		1985
		1986	if ($gen == $self->{_goto_generation}) {
		1987	delete $self->{_goto_generation};
		1988	$self->leave_link ($map, $x, $y);
		1989	}
		1990	})->prio (1);
		1991	}
		1992
		1993	=item $player_object->enter_exit ($exit_object)
		1994
		1995	=cut
		1996
		1997	sub parse_random_map_params {
		1998	my ($spec) = @_;
		1999
		2000	my $rmp = { # defaults
		2001	xsize => (cf::rndm 15, 40),
		2002	ysize => (cf::rndm 15, 40),
		2003	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2004	#layout => string,
		2005	};
		2006
		2007	for (split /\n/, $spec) {
		2008	my ($k, $v) = split /\s+/, $_, 2;
		2009
		2010	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2011	}
		2012
		2013	$rmp
		2014	}
		2015
		2016	sub prepare_random_map {
		2017	my ($exit) = @_;
		2018
		2019	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2020
		2021	# all this does is basically replace the /! path by
		2022	# a new random map path (?random/...) with a seed
		2023	# that depends on the exit object
		2024
		2025	my $rmp = parse_random_map_params $exit->msg;
		2026
		2027	if ($exit->map) {
		2028	$rmp->{region} = $exit->region->name;
		2029	$rmp->{origin_map} = $exit->map->path;
		2030	$rmp->{origin_x} = $exit->x;
		2031	$rmp->{origin_y} = $exit->y;
		2032	}
		2033
		2034	$rmp->{random_seed} ||= $exit->random_seed;
		2035
		2036	my $data = cf::to_json $rmp;
		2037	my $md5 = Digest::MD5::md5_hex $data;
		2038	my $meta = "$RANDOMDIR/$md5.meta";
		2039
		2040	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2041	aio_write $fh, 0, (length $data), $data, 0;
		2042	undef $fh;
		2043	aio_rename "$meta~", $meta;
		2044
		2045	$exit->slaying ("?random/$md5");
		2046	$exit->msg (undef);
		2047	}
		2048	}
		2049
		2050	sub cf::object::player::enter_exit {
		2051	my ($self, $exit) = @_;
		2052
		2053	return unless $self->type == cf::PLAYER;
		2054
		2055	if ($exit->slaying eq "/!") {
		2056	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2057	# the problem is that $exit might not survive long enough
		2058	# so it needs to be done right now, right here
		2059	cf::sync_job { prepare_random_map $exit };
		2060	}
		2061
		2062	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2063	my $hp = $exit->stats->hp;
		2064	my $sp = $exit->stats->sp;
		2065
		2066	$self->enter_link;
		2067
		2068	(async {
		2069	$self->deactivate_recursive; # just to be sure
		2070	unless (eval {
		2071	$self->goto ($slaying, $hp, $sp);
		2072
		2073	1;
		2074	}) {
		2075	$self->message ("Something went wrong deep within the crossfire server. "
		2076	. "I'll try to bring you back to the map you were before. "
		2077	. "Please report this to the dungeon master!",
		2078	cf::NDI_UNIQUE | cf::NDI_RED);
		2079
		2080	warn "ERROR in enter_exit: $@";
		2081	$self->leave_link;
		2082	}
		2083	})->prio (1);
		2084	}
		2085
		2086	=head3 cf::client
		2087
		2088	=over 4
		2089
		2090	=item $client->send_drawinfo ($text, $flags)
		2091
		2092	Sends a drawinfo packet to the client. Circumvents output buffering so
		2093	should not be used under normal circumstances.
		2094
		2095	=cut
		2096
		2097	sub cf::client::send_drawinfo {
		2098	my ($self, $text, $flags) = @_;
		2099
		2100	utf8::encode $text;
		2101	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2102	}
		2103
		2104	=item $client->ext_event ($type, %msg)
		2105
		2106	Sends an exti event to the client.
		2107
		2108	=cut
		2109
		2110	sub cf::client::ext_event($$%) {
		2111	my ($self, $type, %msg) = @_;
		2112
		2113	$msg{msgtype} = "event_$type";
		2114	$self->send_packet ("ext " . cf::to_json \%msg);
		2115	}
		2116
		2117	=item $success = $client->query ($flags, "text", \&cb)
		2118
		2119	Queues a query to the client, calling the given callback with
		2120	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2121	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2122
		2123	Queries can fail, so check the return code. Or don't, as queries will become
		2124	reliable at some point in the future.
		2125
		2126	=cut
		2127
		2128	sub cf::client::query {
		2129	my ($self, $flags, $text, $cb) = @_;
		2130
		2131	return unless $self->state == ST_PLAYING
		2132	|| $self->state == ST_SETUP
		2133	|| $self->state == ST_CUSTOM;
		2134
		2135	$self->state (ST_CUSTOM);
		2136
		2137	utf8::encode $text;
		2138	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2139
		2140	$self->send_packet ($self->{query_queue}[0][0])
		2141	if @{ $self->{query_queue} } == 1;
		2142	}
		2143
		2144	cf::client->attach (
		2145	on_reply => sub {
		2146	my ($ns, $msg) = @_;
		2147
		2148	# this weird shuffling is so that direct followup queries
		2149	# get handled first
		2150	my $queue = delete $ns->{query_queue}
		2151	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2152
		2153	(shift @$queue)->[1]->($msg);
		2154	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2155
		2156	push @{ $ns->{query_queue} }, @$queue;
		2157
		2158	if (@{ $ns->{query_queue} } == @$queue) {
		2159	if (@$queue) {
		2160	$ns->send_packet ($ns->{query_queue}[0][0]);
		2161	} else {
		2162	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2163	}
		2164	}
		2165	},
		2166	);
		2167
		2168	=item $client->async (\&cb)
		2169
		2170	Create a new coroutine, running the specified callback. The coroutine will
		2171	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2172	or loss of connection).
		2173
		2174	=cut
		2175
		2176	sub cf::client::async {
		2177	my ($self, $cb) = @_;
		2178
		2179	my $coro = &Coro::async ($cb);
		2180
		2181	$coro->on_destroy (sub {
		2182	delete $self->{_coro}{$coro+0};
		2183	});
		2184
		2185	$self->{_coro}{$coro+0} = $coro;
		2186
		2187	$coro
		2188	}
		2189
		2190	cf::client->attach (
		2191	on_destroy => sub {
		2192	my ($ns) = @_;
		2193
		2194	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2195	},
		2196	);
		2197
		2198	=back
		2199
		2200
		2201	=head2 SAFE SCRIPTING
		2202
		2203	Functions that provide a safe environment to compile and execute
		2204	snippets of perl code without them endangering the safety of the server
		2205	itself. Looping constructs, I/O operators and other built-in functionality
		2206	is not available in the safe scripting environment, and the number of
		2207	functions and methods that can be called is greatly reduced.
		2208
		2209	=cut
		2210
		2211	our $safe = new Safe "safe";
		2212	our $safe_hole = new Safe::Hole;
		2213
		2214	$SIG{FPE} = 'IGNORE';
		2215
		2216	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		2217
		2218	# here we export the classes and methods available to script code
		2219
		2220	=pod
		2221
		2222	The following functions and methods are available within a safe environment:
		2223
		2224	cf::object contr pay_amount pay_player map
		2225	cf::object::player player
		2226	cf::player peaceful
		2227	cf::map trigger
		2228
		2229	=cut
		2230
		2231	for (
		2232	["cf::object" => qw(contr pay_amount pay_player map)],
		2233	["cf::object::player" => qw(player)],
		2234	["cf::player" => qw(peaceful)],
		2235	["cf::map" => qw(trigger)],
		2236	) {
		2237	no strict 'refs';
		2238	my ($pkg, @funs) = @$_;
		2239	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		2240	for @funs;
		2241	}
		2242
		2243	=over 4
		2244
		2245	=item @retval = safe_eval $code, [var => value, ...]
		2246
		2247	Compiled and executes the given perl code snippet. additional var/value
		2248	pairs result in temporary local (my) scalar variables of the given name
		2249	that are available in the code snippet. Example:
		2250
		2251	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2252
		2253	=cut
		2254
		2255	sub safe_eval($;@) {
		2256	my ($code, %vars) = @_;
		2257
		2258	my $qcode = $code;
		2259	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		2260	$qcode =~ s/\n/\\n/g;
		2261
		2262	local $_;
		2263	local @safe::cf::_safe_eval_args = values %vars;
		2264
		2265	my $eval =
		2266	"do {\n"
		2267	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		2268	. "#line 0 \"{$qcode}\"\n"
		2269	. $code
		2270	. "\n}"
		2271	;
		2272
		2273	sub_generation_inc;
		2274	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		2275	sub_generation_inc;
		2276
		2277	if ($@) {
		2278	warn "$@";
		2279	warn "while executing safe code '$code'\n";
		2280	warn "with arguments " . (join " ", %vars) . "\n";
		2281	}
		2282
		2283	wantarray ? @res : $res[0]
		2284	}
		2285
		2286	=item cf::register_script_function $function => $cb
		2287
		2288	Register a function that can be called from within map/npc scripts. The
		2289	function should be reasonably secure and should be put into a package name
		2290	like the extension.
		2291
		2292	Example: register a function that gets called whenever a map script calls
		2293	C<rent::overview>, as used by the C<rent> extension.
		2294
		2295	cf::register_script_function "rent::overview" => sub {
		2296	...
		2297	};
		2298
		2299	=cut
		2300
		2301	sub register_script_function {
		2302	my ($fun, $cb) = @_;
		2303
		2304	no strict 'refs';
		2305	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		2306	}
		2307
		2308	=back
		2309
		2310	=cut
		2311
		2312	#############################################################################
		2313
		2314	=head2 EXTENSION DATABASE SUPPORT
		2315
		2316	Crossfire maintains a very simple database for extension use. It can
		2317	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2318	convert to/from binary).
		2319
		2320	The parameter C<$family> should best start with the name of the extension
		2321	using it, it should be unique.
		2322
		2323	=over 4
		2324
		2325	=item $value = cf::db_get $family => $key
		2326
		2327	Returns a single value from the database.
		2328
		2329	=item cf::db_put $family => $key => $value
		2330
		2331	Stores the given C<$value> in the family.
		2332
		2333	=cut
		2334
		2335	our $DB;
		2336
		2337	sub db_init {
		2338	unless ($DB) {
		2339	$DB = BDB::db_create $DB_ENV;
		2340
		2341	cf::sync_job {
		2342	eval {
		2343	$DB->set_flags (BDB::CHKSUM);
		2344
		2345	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2346	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2347	cf::cleanup "db_open(db): $!" if $!;
		2348	};
		2349	cf::cleanup "db_open(db): $@" if $@;
		2350	};
		2351	}
		2352	}
		2353
		2354	sub db_get($$) {
		2355	my $key = "$_[0]/$_[1]";
		2356
		2357	cf::sync_job {
		2358	BDB::db_get $DB, undef, $key, my $data;
		2359
		2360	$! ? ()
		2361	: $data
		2362	}
		2363	}
		2364
		2365	sub db_put($$$) {
		2366	BDB::dbreq_pri 4;
		2367	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2368	}
		2369
		2370	=item cf::cache $id => [$paths...], $processversion => $process
		2371
		2372	Generic caching function that returns the value of the resource $id,
		2373	caching and regenerating as required.
		2374
		2375	This function can block.
		2376
		2377	=cut
		2378
		2379	sub cache {
		2380	my ($id, $src, $processversion, $process) = @_;
		2381
		2382	my $meta =
		2383	join "\x00",
		2384	$processversion,
		2385	map {
		2386	aio_stat $_
		2387	and Carp::croak "$_: $!";
		2388
		2389	($_, (stat _)[7,9])
		2390	} @$src;
		2391
		2392	my $dbmeta = db_get cache => "$id/meta";
		2393	if ($dbmeta ne $meta) {
		2394	# changed, we may need to process
		2395
		2396	my @data;
		2397	my $md5;
		2398
		2399	for (0 .. $#$src) {
		2400	0 <= aio_load $src->[$_], $data[$_]
		2401	or Carp::croak "$src->[$_]: $!";
		2402	}
		2403
		2404	# if processing is expensive, check
		2405	# checksum first
		2406	if (1) {
		2407	$md5 =
		2408	join "\x00",
		2409	$processversion,
		2410	map {
		2411	Coro::cede;
		2412	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2413	} 0.. $#$src;
		2414
		2415
		2416	my $dbmd5 = db_get cache => "$id/md5";
		2417	if ($dbmd5 eq $md5) {
		2418	db_put cache => "$id/meta", $meta;
		2419
		2420	return db_get cache => "$id/data";
		2421	}
		2422	}
		2423
		2424	my $t1 = Time::HiRes::time;
		2425	my $data = $process->(\@data);
		2426	my $t2 = Time::HiRes::time;
		2427
		2428	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2429
		2430	db_put cache => "$id/data", $data;
		2431	db_put cache => "$id/md5" , $md5;
		2432	db_put cache => "$id/meta", $meta;
		2433
		2434	return $data;
		2435	}
		2436
		2437	db_get cache => "$id/data"
		2438	}
		2439
		2440	=item fork_call { }, $args
		2441
		2442	Executes the given code block with the given arguments in a seperate
		2443	process, returning the results. Everything must be serialisable with
		2444	Coro::Storable. May, of course, block. Note that the executed sub may
		2445	never block itself or use any form of Event handling.
		2446
		2447	=cut
		2448
		2449	sub fork_call(&@) {
214	my ($who, $arg) = @_;	2450	my ($cb, @args) = @_;
215		2451
216	if ($who->flag (FLAG_WIZ)) {	2452	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
217	$who->message ("reloading...");	2453	# or die "socketpair: $!";
		2454	pipe my $fh1, my $fh2
		2455	or die "pipe: $!";
218		2456
219	warn "reloading...\n";	2457	if (my $pid = fork) {
		2458	close $fh2;
		2459
		2460	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2461	$res = Coro::Storable::thaw $res;
		2462
		2463	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2464
		2465	die $$res unless "ARRAY" eq ref $res;
		2466
		2467	return wantarray ? @$res : $res->[-1];
		2468	} else {
		2469	reset_signals;
		2470	local $SIG{__WARN__};
		2471	local $SIG{__DIE__};
220	eval {	2472	eval {
221	$_->cancel for Event::all_watchers;	2473	close $fh1;
222		2474
223	unload_extension $_ for @exts;	2475	my @res = eval { $cb->(@args) };
224	delete $INC{"cf.pm"};	2476	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2477	};
225		2478
226	# don't, removes xs symbols, too	2479	warn $@ if $@;
227	#Symbol::delete_package $pkg;	2480	_exit 0;
		2481	}
		2482	}
228		2483
229	require cf;	2484	#############################################################################
		2485	# the server's init and main functions
		2486
		2487	sub load_facedata($) {
		2488	my ($path) = @_;
		2489
		2490	warn "loading facedata from $path\n";
		2491
		2492	my $facedata;
		2493	0 < aio_load $path, $facedata
		2494	or die "$path: $!";
		2495
		2496	$facedata = Coro::Storable::thaw $facedata;
		2497
		2498	$facedata->{version} == 2
		2499	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2500
		2501	{
		2502	my $faces = $facedata->{faceinfo};
		2503
		2504	while (my ($face, $info) = each %$faces) {
		2505	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2506	warn "$face $info->{magicmap}\n" if $face =~ /obol/;#d#
		2507	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2508	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2509	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2510	Coro::cede;
		2511	}
		2512
		2513	while (my ($face, $info) = each %$faces) {
		2514	next unless $info->{smooth};
		2515	my $idx = cf::face::find $face
		2516	or next;
		2517	if (my $smooth = cf::face::find $info->{smooth}) {
		2518	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2519	} else {
		2520	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2521	}
		2522	Coro::cede;
		2523	}
		2524	}
		2525
		2526	{
		2527	my $anims = $facedata->{animinfo};
		2528
		2529	while (my ($anim, $info) = each %$anims) {
		2530	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2531	Coro::cede;
		2532	}
		2533
		2534	cf::anim::invalidate_all; # d'oh
		2535	}
		2536
		2537	1
		2538	}
		2539
		2540	sub reload_regions {
		2541	load_resource_file "$MAPDIR/regions"
		2542	or die "unable to load regions file\n";
		2543	}
		2544
		2545	sub reload_facedata {
		2546	load_facedata "$DATADIR/facedata"
		2547	or die "unable to load facedata\n";
		2548	}
		2549
		2550	sub reload_archetypes {
		2551	load_resource_file "$DATADIR/archetypes"
		2552	or die "unable to load archetypes\n";
		2553	}
		2554
		2555	sub reload_treasures {
		2556	load_resource_file "$DATADIR/treasures"
		2557	or die "unable to load treasurelists\n";
		2558	}
		2559
		2560	sub reload_resources {
		2561	warn "reloading resource files...\n";
		2562
		2563	reload_regions;
		2564	reload_facedata;
		2565	reload_archetypes;
		2566	reload_treasures;
		2567
		2568	warn "finished reloading resource files\n";
		2569	}
		2570
		2571	sub init {
		2572	reload_resources;
		2573	}
		2574
		2575	sub cfg_load {
		2576	open my $fh, "<:utf8", "$CONFDIR/config"
		2577	or return;
		2578
		2579	local $/;
		2580	*CFG = YAML::Syck::Load <$fh>;
		2581
		2582	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2583
		2584	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2585	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2586
		2587	if (exists $CFG{mlockall}) {
		2588	eval {
		2589	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2590	and die "WARNING: m(un)lockall failed: $!\n";
230	};	2591	};
231	warn $@ if $@;	2592	warn $@ if $@;
232	$who->message ($@) if $@;	2593	}
		2594	}
		2595
		2596	sub main {
		2597	# we must not ever block the main coroutine
		2598	local $Coro::idle = sub {
		2599	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2600	(async {
		2601	Event::one_event;
		2602	})->prio (Coro::PRIO_MAX);
		2603	};
		2604
		2605	cfg_load;
		2606	db_init;
		2607	load_extensions;
		2608
		2609	$TICK_WATCHER->start;
		2610	Event::loop;
		2611	}
		2612
		2613	#############################################################################
		2614	# initialisation and cleanup
		2615
		2616	# install some emergency cleanup handlers
		2617	BEGIN {
		2618	for my $signal (qw(INT HUP TERM)) {
		2619	Event->signal (
		2620	reentrant => 0,
		2621	data => WF_AUTOCANCEL,
		2622	signal => $signal,
		2623	prio => 0,
		2624	cb => sub {
		2625	cf::cleanup "SIG$signal";
		2626	},
		2627	);
		2628	}
		2629	}
		2630
		2631	sub emergency_save() {
		2632	my $freeze_guard = cf::freeze_mainloop;
		2633
		2634	warn "enter emergency perl save\n";
		2635
		2636	cf::sync_job {
		2637	# use a peculiar iteration method to avoid tripping on perl
		2638	# refcount bugs in for. also avoids problems with players
		2639	# and maps saved/destroyed asynchronously.
		2640	warn "begin emergency player save\n";
		2641	for my $login (keys %cf::PLAYER) {
		2642	my $pl = $cf::PLAYER{$login} or next;
		2643	$pl->valid or next;
		2644	$pl->save;
		2645	}
		2646	warn "end emergency player save\n";
		2647
		2648	warn "begin emergency map save\n";
		2649	for my $path (keys %cf::MAP) {
		2650	my $map = $cf::MAP{$path} or next;
		2651	$map->valid or next;
		2652	$map->save;
		2653	}
		2654	warn "end emergency map save\n";
		2655
		2656	warn "begin emergency database checkpoint\n";
		2657	BDB::db_env_txn_checkpoint $DB_ENV;
		2658	warn "end emergency database checkpoint\n";
		2659	};
		2660
		2661	warn "leave emergency perl save\n";
		2662	}
		2663
		2664	sub post_cleanup {
		2665	my ($make_core) = @_;
		2666
		2667	warn Carp::longmess "post_cleanup backtrace"
		2668	if $make_core;
		2669	}
		2670
		2671	sub do_reload_perl() {
		2672	# can/must only be called in main
		2673	if ($Coro::current != $Coro::main) {
		2674	warn "can only reload from main coroutine";
		2675	return;
		2676	}
		2677
		2678	warn "reloading...";
		2679
		2680	warn "entering sync_job";
		2681
		2682	cf::sync_job {
		2683	cf::write_runtime; # external watchdog should not bark
		2684	cf::emergency_save;
		2685	cf::write_runtime; # external watchdog should not bark
		2686
		2687	warn "syncing database to disk";
		2688	BDB::db_env_txn_checkpoint $DB_ENV;
		2689
		2690	# if anything goes wrong in here, we should simply crash as we already saved
		2691
		2692	warn "cancelling all WF_AUTOCANCEL watchers";
		2693	for (Event::all_watchers) {
		2694	$_->cancel if $_->data & WF_AUTOCANCEL;
		2695	}
		2696
		2697	warn "flushing outstanding aio requests";
		2698	for (;;) {
		2699	BDB::flush;
		2700	IO::AIO::flush;
		2701	Coro::cede;
		2702	last unless IO::AIO::nreqs || BDB::nreqs;
		2703	warn "iterate...";
		2704	}
		2705
		2706	++$RELOAD;
		2707
		2708	warn "cancelling all extension coros";
		2709	$_->cancel for values %EXT_CORO;
		2710	%EXT_CORO = ();
		2711
		2712	warn "removing commands";
		2713	%COMMAND = ();
		2714
		2715	warn "removing ext commands";
		2716	%EXTCMD = ();
		2717
		2718	warn "unloading/nuking all extensions";
		2719	for my $pkg (@EXTS) {
		2720	warn "... unloading $pkg";
		2721
		2722	if (my $cb = $pkg->can ("unload")) {
		2723	eval {
		2724	$cb->($pkg);
		2725	1
		2726	} or warn "$pkg unloaded, but with errors: $@";
		2727	}
		2728
		2729	warn "... nuking $pkg";
		2730	Symbol::delete_package $pkg;
		2731	}
		2732
		2733	warn "unloading all perl modules loaded from $LIBDIR";
		2734	while (my ($k, $v) = each %INC) {
		2735	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2736
		2737	warn "... unloading $k";
		2738	delete $INC{$k};
		2739
		2740	$k =~ s/\.pm$//;
		2741	$k =~ s/\//::/g;
		2742
		2743	if (my $cb = $k->can ("unload_module")) {
		2744	$cb->();
		2745	}
		2746
		2747	Symbol::delete_package $k;
		2748	}
		2749
		2750	warn "getting rid of safe::, as good as possible";
		2751	Symbol::delete_package "safe::$_"
		2752	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2753
		2754	warn "unloading cf.pm \"a bit\"";
		2755	delete $INC{"cf.pm"};
		2756	delete $INC{"cf/pod.pm"};
		2757
		2758	# don't, removes xs symbols, too,
		2759	# and global variables created in xs
		2760	#Symbol::delete_package __PACKAGE__;
		2761
		2762	warn "unload completed, starting to reload now";
		2763
		2764	warn "reloading cf.pm";
		2765	require cf;
		2766	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2767
		2768	warn "loading config and database again";
		2769	cf::cfg_load;
		2770
		2771	warn "loading extensions";
		2772	cf::load_extensions;
		2773
		2774	warn "reattaching attachments to objects/players";
		2775	_global_reattach; # objects, sockets
		2776	warn "reattaching attachments to maps";
		2777	reattach $_ for values %MAP;
		2778	warn "reattaching attachments to players";
		2779	reattach $_ for values %PLAYER;
		2780
		2781	warn "leaving sync_job";
		2782
		2783	1
		2784	} or do {
		2785	warn $@;
		2786	warn "error while reloading, exiting.";
		2787	exit 1;
		2788	};
		2789
233	warn "reloaded\n";	2790	warn "reloaded";
		2791	};
234		2792
		2793	our $RELOAD_WATCHER; # used only during reload
		2794
		2795	sub reload_perl() {
		2796	# doing reload synchronously and two reloads happen back-to-back,
		2797	# coro crashes during coro_state_free->destroy here.
		2798
		2799	$RELOAD_WATCHER ||= Event->timer (
		2800	reentrant => 0,
		2801	after => 0,
		2802	data => WF_AUTOCANCEL,
		2803	cb => sub {
		2804	do_reload_perl;
		2805	undef $RELOAD_WATCHER;
		2806	},
		2807	);
		2808	}
		2809
		2810	register_command "reload" => sub {
		2811	my ($who, $arg) = @_;
		2812
		2813	if ($who->flag (FLAG_WIZ)) {
235	$who->message ("reloaded");	2814	$who->message ("reloading server.");
		2815	async { reload_perl };
		2816	}
		2817	};
		2818
		2819	unshift @INC, $LIBDIR;
		2820
		2821	my $bug_warning = 0;
		2822
		2823	our @WAIT_FOR_TICK;
		2824	our @WAIT_FOR_TICK_BEGIN;
		2825
		2826	sub wait_for_tick {
		2827	return unless $TICK_WATCHER->is_active;
		2828	return if $Coro::current == $Coro::main;
		2829
		2830	my $signal = new Coro::Signal;
		2831	push @WAIT_FOR_TICK, $signal;
		2832	$signal->wait;
		2833	}
		2834
		2835	sub wait_for_tick_begin {
		2836	return unless $TICK_WATCHER->is_active;
		2837	return if $Coro::current == $Coro::main;
		2838
		2839	my $signal = new Coro::Signal;
		2840	push @WAIT_FOR_TICK_BEGIN, $signal;
		2841	$signal->wait;
		2842	}
		2843
		2844	my $min = 1e6;#d#
		2845	my $avg = 10;
		2846	$TICK_WATCHER = Event->timer (
		2847	reentrant => 0,
		2848	parked => 1,
		2849	prio => 0,
		2850	at => $NEXT_TICK || $TICK,
		2851	data => WF_AUTOCANCEL,
		2852	cb => sub {
		2853	if ($Coro::current != $Coro::main) {
		2854	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2855	unless ++$bug_warning > 10;
		2856	return;
		2857	}
		2858
		2859	$NOW = $tick_start = Event::time;
		2860
		2861	cf::server_tick; # one server iteration
		2862
		2863	0 && sync_job {#d#
		2864	for(1..10) {
		2865	my $t = Event::time;
		2866	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2867	or die;
		2868
		2869	$map->width (50);
		2870	$map->height (50);
		2871	$map->alloc;
		2872	$map->_load_objects ("/tmp/x.map", 1);
		2873	my $t = Event::time - $t;
		2874
		2875	#next unless $t < 0.0013;#d#
		2876	if ($t < $min) {
		2877	$min = $t;
		2878	}
		2879	$avg = $avg * 0.99 + $t * 0.01;
		2880	}
		2881	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2882	exit 0;
		2883	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2884	};
		2885
		2886	$RUNTIME += $TICK;
		2887	$NEXT_TICK += $TICK;
		2888
		2889	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2890	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2891	Coro::async_pool {
		2892	write_runtime
		2893	or warn "ERROR: unable to write runtime file: $!";
		2894	};
		2895	}
		2896
		2897	# my $AFTER = Event::time;
		2898	# warn $AFTER - $NOW;#d#
		2899
		2900	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2901	$sig->send;
		2902	}
		2903	while (my $sig = shift @WAIT_FOR_TICK) {
		2904	$sig->send;
		2905	}
		2906
		2907	$NOW = Event::time;
		2908
		2909	# if we are delayed by four ticks or more, skip them all
		2910	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		2911
		2912	$TICK_WATCHER->at ($NEXT_TICK);
		2913	$TICK_WATCHER->start;
		2914
		2915	$LOAD = ($NOW - $tick_start) / $TICK;
		2916	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2917
		2918	_post_tick;
		2919
		2920
		2921	},
		2922	);
		2923
		2924	{
		2925	BDB::max_poll_time $TICK * 0.1;
		2926	$BDB_POLL_WATCHER = Event->io (
		2927	reentrant => 0,
		2928	fd => BDB::poll_fileno,
		2929	poll => 'r',
		2930	prio => 0,
		2931	data => WF_AUTOCANCEL,
		2932	cb => \&BDB::poll_cb,
		2933	);
		2934	BDB::min_parallel 8;
		2935
		2936	BDB::set_sync_prepare {
		2937	my $status;
		2938	my $current = $Coro::current;
		2939	(
		2940	sub {
		2941	$status = $!;
		2942	$current->ready; undef $current;
		2943	},
		2944	sub {
		2945	Coro::schedule while defined $current;
		2946	$! = $status;
		2947	},
		2948	)
		2949	};
		2950
		2951	unless ($DB_ENV) {
		2952	$DB_ENV = BDB::db_env_create;
		2953
		2954	cf::sync_job {
		2955	eval {
		2956	BDB::db_env_open
		2957	$DB_ENV,
		2958	$BDBDIR,
		2959	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2960	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2961	0666;
		2962
		2963	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2964
		2965	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2966	$DB_ENV->set_lk_detect;
		2967	};
		2968
		2969	cf::cleanup "db_env_open(db): $@" if $@;
		2970	};
		2971	}
		2972	}
		2973
		2974	{
		2975	IO::AIO::min_parallel 8;
		2976
		2977	undef $Coro::AIO::WATCHER;
		2978	IO::AIO::max_poll_time $TICK * 0.1;
		2979	$AIO_POLL_WATCHER = Event->io (
		2980	reentrant => 0,
		2981	data => WF_AUTOCANCEL,
		2982	fd => IO::AIO::poll_fileno,
		2983	poll => 'r',
		2984	prio => 6,
		2985	cb => \&IO::AIO::poll_cb,
		2986	);
		2987	}
		2988
		2989	my $_log_backtrace;
		2990
		2991	sub _log_backtrace {
		2992	my ($msg, @addr) = @_;
		2993
		2994	$msg =~ s/\n//;
		2995
		2996	# limit the # of concurrent backtraces
		2997	if ($_log_backtrace < 2) {
		2998	++$_log_backtrace;
		2999	async {
		3000	my @bt = fork_call {
		3001	@addr = map { sprintf "%x", $_ } @addr;
		3002	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3003	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3004	or die "addr2line: $!";
		3005
		3006	my @funcs;
		3007	my @res = <$fh>;
		3008	chomp for @res;
		3009	while (@res) {
		3010	my ($func, $line) = splice @res, 0, 2, ();
		3011	push @funcs, "[$func] $line";
		3012	}
		3013
		3014	@funcs
		3015	};
		3016
		3017	LOG llevInfo, "[ABT] $msg\n";
		3018	LOG llevInfo, "[ABT] $_\n" for @bt;
		3019	--$_log_backtrace;
		3020	};
236	} else {	3021	} else {
237	$who->message ("Intruder Alert!");	3022	LOG llevInfo, "[ABT] $msg\n";
		3023	LOG llevInfo, "[ABT] [suppressed]\n";
238	}	3024	}
239	};
240
241	#############################################################################
242	# extcmd framework, basically convert ext <id> <pkg> arg1 args
243	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
244
245	sub on_extcmd {
246	my ($pl, $buf) = @_;
247
248	my ($type) = $buf =~ s/^(\S+) // ? $1 : "";
249
250	$extcmd{$type}[0]->($pl, $buf)
251	if $extcmd{$type};
252	}	3025	}
253		3026
254	#############################################################################	3027	# load additional modules
255	# load/save/clean perl data associated with a map	3028	use cf::pod;
256		3029
257	*on_mapclean = sub {	3030	END { cf::emergency_save }
258	my ($map) = @_;
259
260	my $path = $map->tmpname;
261	defined $path or return;
262
263	unlink "$path.cfperl";
264	};
265
266	*on_mapin =
267	*on_mapload = sub {
268	my ($map) = @_;
269
270	my $path = $map->tmpname;
271	$path = $map->path unless defined $path;
272
273	open my $fh, "<:raw", "$path.cfperl"
274	or return; # no perl data
275
276	my $data = Storable::thaw do { local $/; <$fh> };
277
278	$data->{version} <= 1
279	or return; # too new
280
281	$map->_set_obs ($data->{obs});
282	};
283
284	*on_mapout = sub {
285	my ($map) = @_;
286
287	my $path = $map->tmpname;
288	$path = $map->path unless defined $path;
289
290	my $obs = $map->_get_obs;
291
292	if (defined $obs) {
293	open my $fh, ">:raw", "$path.cfperl"
294	or die "$path.cfperl: $!";
295
296	stat $path;
297
298	print $fh Storable::nfreeze {
299	size => (stat _)[7],
300	time => (stat _)[9],
301	version => 1,
302	obs => $obs,
303	};
304
305	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
306	} else {
307	unlink "$path.cfperl";
308	}
309	};
310
311	#############################################################################
312	# load/save perl data associated with player->ob objects
313
314	*on_player_load = sub {
315	my ($ob, $path) = @_;
316
317	if (open my $fh, "<:raw", "$path.cfperl") {
318
319	#d##TODO#remove
320
321	my $data = Storable::thaw do { local $/; <$fh> };
322
323	$data->{version} <= 1
324	or return; # too new
325
326	%$ob = %{$data->{ob}};
327	return;
328	}
329
330	for my $o ($ob, $ob->inv) {
331	if (my $value = $o->get_ob_key_value ("_perl_data")) {
332	$o->set_ob_key_value ("_perl_data");
333
334	%$o = %{ Storable::thaw pack "H*", $value };
335	}
336	}
337	};
338
339	*on_player_save = sub {
340	my ($ob, $path) = @_;
341
342	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
343	for grep %$_, $ob, $ob->inv;
344
345	unlink "$path.cfperl";#d##TODO#remove
346	};
347
348	register "<global>", __PACKAGE__;
349
350	unshift @INC, maps_directory "perl";
351
352	load_extensions;
353		3031
354	1	3032	1
355		3033

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