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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.16 by root, Mon Jun 12 13:25:27 2006 UTC vs.
Revision 1.266 by root, Fri May 18 01:01:02 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;
		10	use Event;
		11	use Opcode;
		12	use Safe;
		13	use Safe::Hole;
6		14
7	use strict;	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;
8		24
9	our %COMMAND;	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
		40	$Event::Eval = 1; # no idea why this is required, but it is
		41
		42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		43	$YAML::Syck::ImplicitUnicode = 1;
		44
		45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		46
		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
10	our @EVENT;	58	our @EVENT;
11	our %PROP_TYPE;	59
12	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
13		172
14	BEGIN {	173	BEGIN {
15	@EVENT = map lc, @EVENT;
16
17	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
18	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
19	$msg .= "\n"	177	$msg .= "\n"
20	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
21		179
22	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
23	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
24	};	184	};
25	}	185	}
26		186
27	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
28		193
29	# generate property mutators	194	# we bless all objects into (empty) derived classes to force a method lookup
30	sub prop_gen {	195	# within the Safe compartment.
31	my ($prefix, $class) = @_;	196	for my $pkg (qw(
32		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
33	no strict 'refs';	203	no strict 'refs';
		204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
		205	}
34		206
35	for my $prop (keys %PROP_TYPE) {	207	$Event::DIED = sub {
36	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	208	warn "error in event callback: @_";
37	my $sub = lc $1;	209	};
38		210
39	my $type = $PROP_TYPE{$prop};	211	=head2 UTILITY FUNCTIONS
40	my $idx = $PROP_IDX {$prop};
41		212
42	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	213	=over 4
43	$_[0]->get_property ($type, $idx)	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();
44	};	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	}
45		237
46	*{"$class\::set_$sub"} = sub {	238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
47	$_[0]->set_property ($type, $idx, $_[1]);	239
48	} unless $ignore_set{$prop};	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;
49	}	305	};
		306	$TICK_WATCHER->stop;
		307	$guard
50	}	308	}
51		309
52	# auto-generate most of the API	310	=item cf::async { BLOCK }
53		311
54	prop_gen OBJECT_PROP => "cf::object";	312	Currently the same as Coro::async_pool, meaning you cannot use
55	# CFAPI_OBJECT_ANIMATION?	313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
56	prop_gen PLAYER_PROP => "cf::object::player";	314	thing you are allowed to do is call C<prio> on it.
57		315
58	prop_gen MAP_PROP => "cf::map";	316	=cut
59	prop_gen ARCH_PROP => "cf::arch";
60		317
61	# guessed hierarchies	318	BEGIN { *async = \&Coro::async_pool }
62		319
63	@cf::object::player::ISA = 'cf::object';	320	=item cf::sync_job { BLOCK }
64	@cf::object::map::ISA = 'cf::object';
65		321
66	my %ext_pkg;	322	The design of crossfire+ requires that the main coro ($Coro::main) is
67	my @exts;	323	always able to handle events or runnable, as crossfire+ is only partly
68	my @hook;	324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
69	my %command;
70	my %extcmd;
71		325
72	sub inject_event {	326	If it must be done, put the blocking parts into C<sync_job>. This will run
73	my $extension = shift;	327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($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(&) {
74	my $event_code = shift;	382	my $cb = shift;
75		383
76	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	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
		401	utime undef, undef, $fh;
		402	}
		403
		404	my $guard = cf::lock_acquire "write_runtime";
		405
		406	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
77	or return;	407	or return;
78		408
79	&$cb	409	my $value = $cf::RUNTIME + 90 + 10;
80	}	410	# 10 is the runtime save interval, for a monotonic clock
		411	# 60 allows for the watchdog to kill the server.
81		412
82	sub inject_global_event {	413	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		414	and return;
		415
		416	# always fsync - this file is important
		417	aio_fsync $fh
		418	and return;
		419
		420	# touch it again to show we are up-to-date
		421	utime undef, undef, $fh;
		422
		423	close $fh
		424	or return;
		425
		426	aio_rename "$runtime~", $runtime
		427	and return;
		428
		429	warn "runtime file written.\n";#d#
		430
		431	1
		432	}
		433
		434	=item cf::datalog type => key => value, ...
		435
		436	Log a datalog packet of the given type with the given key-value pairs.
		437
		438	=cut
		439
		440	sub datalog($@) {
		441	my ($type, %kv) = @_;
		442	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		443	}
		444
		445	=back
		446
		447	=cut
		448
		449	#############################################################################
		450
		451	=head2 ATTACHABLE OBJECTS
		452
		453	Many objects in crossfire are so-called attachable objects. That means you can
		454	attach callbacks/event handlers (a collection of which is called an "attachment")
		455	to it. All such attachable objects support the following methods.
		456
		457	In the following description, CLASS can be any of C<global>, C<object>
		458	C<player>, C<client> or C<map> (i.e. the attachable objects in
		459	crossfire+).
		460
		461	=over 4
		462
		463	=item $attachable->attach ($attachment, key => $value...)
		464
		465	=item $attachable->detach ($attachment)
		466
		467	Attach/detach a pre-registered attachment to a specific object and give it
		468	the specified key/value pairs as arguments.
		469
		470	Example, attach a minesweeper attachment to the given object, making it a
		471	10x10 minesweeper game:
		472
		473	$obj->attach (minesweeper => width => 10, height => 10);
		474
		475	=item $bool = $attachable->attached ($name)
		476
		477	Checks wether the named attachment is currently attached to the object.
		478
		479	=item cf::CLASS->attach ...
		480
		481	=item cf::CLASS->detach ...
		482
		483	Define an anonymous attachment and attach it to all objects of the given
		484	CLASS. See the next function for an explanation of its arguments.
		485
		486	You can attach to global events by using the C<cf::global> class.
		487
		488	Example, log all player logins:
		489
		490	cf::player->attach (
		491	on_login => sub {
		492	my ($pl) = @_;
		493	...
		494	},
		495	);
		496
		497	Example, attach to the jeweler skill:
		498
		499	cf::object->attach (
		500	type => cf::SKILL,
		501	subtype => cf::SK_JEWELER,
		502	on_use_skill => sub {
		503	my ($sk, $ob, $part, $dir, $msg) = @_;
		504	...
		505	},
		506	);
		507
		508	=item cf::CLASS::attachment $name, ...
		509
		510	Register an attachment by C<$name> through which attachable objects of the
		511	given CLASS can refer to this attachment.
		512
		513	Some classes such as crossfire maps and objects can specify attachments
		514	that are attached at load/instantiate time, thus the need for a name.
		515
		516	These calls expect any number of the following handler/hook descriptions:
		517
		518	=over 4
		519
		520	=item prio => $number
		521
		522	Set the priority for all following handlers/hooks (unless overwritten
		523	by another C<prio> setting). Lower priority handlers get executed
		524	earlier. The default priority is C<0>, and many built-in handlers are
		525	registered at priority C<-1000>, so lower priorities should not be used
		526	unless you know what you are doing.
		527
		528	=item type => $type
		529
		530	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		531	given type of objects only (the additional parameter C<subtype> can be
		532	used to further limit to the given subtype).
		533
		534	=item on_I<event> => \&cb
		535
		536	Call the given code reference whenever the named event happens (event is
		537	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		538	handlers are recognised generally depends on the type of object these
		539	handlers attach to).
		540
		541	See F<include/eventinc.h> for the full list of events supported, and their
		542	class.
		543
		544	=item package => package::
		545
		546	Look for sub functions of the name C<< on_I<event> >> in the given
		547	package and register them. Only handlers for eevents supported by the
		548	object/class are recognised.
		549
		550	=back
		551
		552	Example, define an attachment called "sockpuppet" that calls the given
		553	event handler when a monster attacks:
		554
		555	cf::object::attachment sockpuppet =>
		556	on_skill_attack => sub {
		557	my ($self, $victim) = @_;
		558	...
		559	}
		560	}
		561
		562	=item $attachable->valid
		563
		564	Just because you have a perl object does not mean that the corresponding
		565	C-level object still exists. If you try to access an object that has no
		566	valid C counterpart anymore you get an exception at runtime. This method
		567	can be used to test for existence of the C object part without causing an
		568	exception.
		569
		570	=cut
		571
		572	# the following variables are defined in .xs and must not be re-created
		573	our @CB_GLOBAL = (); # registry for all global events
		574	our @CB_ATTACHABLE = (); # registry for all attachables
		575	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		576	our @CB_PLAYER = ();
		577	our @CB_CLIENT = ();
		578	our @CB_TYPE = (); # registry for type (cf-object class) based events
		579	our @CB_MAP = ();
		580
		581	my %attachment;
		582
		583	sub cf::attachable::thawer_merge {
		584	# simply override everything except _meta
		585	local $_[0]{_meta};
		586	%{$_[0]} = %{$_[1]};
		587	}
		588
		589	sub _attach_cb($$$$) {
		590	my ($registry, $event, $prio, $cb) = @_;
		591
		592	use sort 'stable';
		593
		594	$cb = [$prio, $cb];
		595
		596	@{$registry->[$event]} = sort
		597	{ $a->[0] cmp $b->[0] }
		598	@{$registry->[$event] || []}, $cb;
		599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		603
		604	# attach handles attaching event callbacks
		605	# the only thing the caller has to do is pass the correct
		606	# registry (== where the callback attaches to).
		607	sub _attach {
		608	my ($registry, $klass, @arg) = @_;
		609
		610	my $object_type;
		611	my $prio = 0;
		612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
		619	while (@arg) {
		620	my $type = shift @arg;
		621
		622	if ($type eq "prio") {
		623	$prio = shift @arg;
		624
		625	} elsif ($type eq "type") {
		626	$object_type = shift @arg;
		627	$registry = $CB_TYPE[$object_type] ||= [];
		628
		629	} elsif ($type eq "subtype") {
		630	defined $object_type or Carp::croak "subtype specified without type";
		631	my $object_subtype = shift @arg;
		632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		633
		634	} elsif ($type eq "package") {
		635	my $pkg = shift @arg;
		636
		637	while (my ($name, $id) = each %cb_id) {
		638	if (my $cb = $pkg->can ($name)) {
		639	_attach_cb $registry, $id, $prio, $cb;
		640	}
		641	}
		642
		643	} elsif (exists $cb_id{$type}) {
		644	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		645
		646	} elsif (ref $type) {
		647	warn "attaching objects not supported, ignoring.\n";
		648
		649	} else {
		650	shift @arg;
		651	warn "attach argument '$type' not supported, ignoring.\n";
		652	}
		653	}
		654	}
		655
		656	sub _object_attach {
		657	my ($obj, $name, %arg) = @_;
		658
		659	return if exists $obj->{_attachment}{$name};
		660
		661	if (my $attach = $attachment{$name}) {
		662	my $registry = $obj->registry;
		663
		664	for (@$attach) {
		665	my ($klass, @attach) = @$_;
		666	_attach $registry, $klass, @attach;
		667	}
		668
		669	$obj->{$name} = \%arg;
		670	} else {
		671	warn "object uses attachment '$name' that is not available, postponing.\n";
		672	}
		673
		674	$obj->{_attachment}{$name} = undef;
		675	}
		676
		677	sub cf::attachable::attach {
		678	if (ref $_[0]) {
		679	_object_attach @_;
		680	} else {
		681	_attach shift->_attach_registry, @_;
		682	}
		683	};
		684
		685	# all those should be optimised
		686	sub cf::attachable::detach {
		687	my ($obj, $name) = @_;
		688
		689	if (ref $obj) {
		690	delete $obj->{_attachment}{$name};
		691	reattach ($obj);
		692	} else {
		693	Carp::croak "cannot, currently, detach class attachments";
		694	}
		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 {
83	my $event = shift;	727	my $event = shift;
		728	my $callbacks = shift;
84		729
85	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, $data) >= 0
86	or return;	868	or return;
87		869
88	List::Util::max map &$_, values %$cb	870	unless (aio_stat "$filename.pst") {
89	}	871	(aio_load "$filename.pst", $av) >= 0
90		872	or return;
91	sub inject_command {	873	$av = eval { (Storable::thaw $av)->{objs} };
92	my ($name, $obj, $params) = @_;
93
94	for my $cmd (@{ $command{$name} }) {
95	$cmd->[1]->($obj, $params);
96	}	874	}
97		875
98	-1	876	warn sprintf "loading %s (%d)\n",
		877	$filename, length $data, scalar @{$av || []};#d#
		878	return ($data, $av);
99	}	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	$name.
		888
		889	=cut
100		890
101	sub register_command {	891	sub register_command {
102	my ($name, $time, $cb) = @_;	892	my ($name, $cb) = @_;
103		893
104	my $caller = caller;	894	my $caller = caller;
105	#warn "registering command '$name/$time' to '$caller'";	895	#warn "registering command '$name/$time' to '$caller'";
106		896
107	push @{ $command{$name} }, [$time, $cb, $caller];	897	push @{ $COMMAND{$name} }, [$caller, $cb];
108	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
109	}	898	}
		899
		900	=item cf::register_extcmd $name => \&callback($pl,$packet);
		901
		902	Register a callbackf ro execution when the client sends an extcmd packet.
		903
		904	If the callback returns something, it is sent back as if reply was being
		905	called.
		906
		907	=cut
110		908
111	sub register_extcmd {	909	sub register_extcmd {
112	my ($name, $cb) = @_;	910	my ($name, $cb) = @_;
113		911
114	my $caller = caller;	912	$EXTCMD{$name} = $cb;
115	#warn "registering extcmd '$name' to '$caller'";
116
117	$extcmd{$name} = [$cb, $caller];
118	}	913	}
119		914
120	sub register {	915	cf::player->attach (
121	my ($base, $pkg) = @_;	916	on_command => sub {
		917	my ($pl, $name, $params) = @_;
122		918
123	for my $idx (0 .. $#EVENT) {	919	my $cb = $COMMAND{$name}
124	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	920	or return;
125	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	921
126	$hook[$idx]{$base} = $ref;	922	for my $cmd (@$cb) {
		923	$cmd->[1]->($pl->ob, $params);
127	}	924	}
		925
		926	cf::override;
128	}	927	},
129	}	928	on_extcmd => sub {
		929	my ($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	);
130		946
131	sub load_extension {	947	sub load_extension {
132	my ($path) = @_;	948	my ($path) = @_;
133		949
134	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	950	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
135	my $base = $1;	951	my $base = $1;
136	my $pkg = $1;	952	my $pkg = $1;
137	$pkg =~ s/[^[:word:]]/_/g;	953	$pkg =~ s/[^[:word:]]/_/g;
138	$pkg = "cf::ext::$pkg";	954	$pkg = "ext::$pkg";
139		955
140	warn "loading '$path' into '$pkg'\n";	956	warn "... loading '$path' into '$pkg'\n";
141		957
142	open my $fh, "<:utf8", $path	958	open my $fh, "<:utf8", $path
143	or die "$path: $!";	959	or die "$path: $!";
144		960
145	my $source =	961	my $source =
146	"package $pkg; use strict; use utf8;\n"	962	"package $pkg; use strict; use utf8;\n"
147	. "#line 1 \"$path\"\n{\n"	963	. "#line 1 \"$path\"\n{\n"
148	. (do { local $/; <$fh> })	964	. (do { local $/; <$fh> })
149	. "\n};\n1";	965	. "\n};\n1";
150		966
151	eval $source	967	unless (eval $source) {
152	or die "$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	}
153		977
154	push @exts, $pkg;	978	push @EXTS, $pkg;
155	$ext_pkg{$base} = $pkg;
156
157	# no strict 'refs';
158	# @{"$pkg\::ISA"} = cf::ext::;
159
160	register $base, $pkg;
161	}
162
163	sub unload_extension {
164	my ($pkg) = @_;
165
166	warn "removing extension $pkg\n";
167
168	# remove hooks
169	for my $idx (0 .. $#EVENT) {
170	delete $hook[$idx]{$pkg};
171	}
172
173	# remove commands
174	for my $name (keys %command) {
175	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
176
177	if (@cb) {
178	$command{$name} = \@cb;
179	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
180	} else {
181	delete $command{$name};
182	delete $COMMAND{"$name\000"};
183	}
184	}
185
186	# remove extcmds
187	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
188	delete $extcmd{$name};
189	}
190
191	Symbol::delete_package $pkg;
192	}	979	}
193		980
194	sub load_extensions {	981	sub load_extensions {
195	my $LIBDIR = maps_directory "perl";
196
197	for my $ext (<$LIBDIR/*.ext>) {	982	for my $ext (<$LIBDIR/*.ext>) {
198	next unless -r $ext;	983	next unless -r $ext;
199	eval {	984	eval {
200	load_extension $ext;	985	load_extension $ext;
201	1	986	1
202	} or warn "$ext not loaded: $@";	987	} or warn "$ext not loaded: $@";
203	}	988	}
204	}	989	}
205		990
206	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;
		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	my $link_pos = delete $self->{_link_pos};
		1916
		1917	unless ($map) {
		1918	# restore original map position
		1919	($map, $x, $y) = @{ $link_pos || [] };
		1920	$map = cf::map::find $map;
		1921
		1922	unless ($map) {
		1923	($map, $x, $y) = @$EMERGENCY_POSITION;
		1924	$map = cf::map::find $map
		1925	or die "FATAL: cannot load emergency map\n";
		1926	}
		1927	}
		1928
		1929	($x, $y) = (-1, -1)
		1930	unless (defined $x) && (defined $y);
		1931
		1932	# use -1 or undef as default coordinates, not 0, 0
		1933	($x, $y) = ($map->enter_x, $map->enter_y)
		1934	if $x <=0 && $y <= 0;
		1935
		1936	$map->load;
		1937	$map->load_diag;
		1938
		1939	return unless $self->contr->active;
		1940	$self->activate_recursive;
		1941
		1942	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1943	$self->enter_map ($map, $x, $y);
		1944	}
		1945
		1946	cf::player->attach (
		1947	on_logout => sub {
		1948	my ($pl) = @_;
		1949
		1950	# abort map switching before logout
		1951	if ($pl->ob->{_link_pos}) {
		1952	cf::sync_job {
		1953	$pl->ob->leave_link
		1954	};
		1955	}
		1956	},
		1957	on_login => sub {
		1958	my ($pl) = @_;
		1959
		1960	# try to abort aborted map switching on player login :)
		1961	# should happen only on crashes
		1962	if ($pl->ob->{_link_pos}) {
		1963	$pl->ob->enter_link;
		1964	(async {
		1965	$pl->ob->reply (undef,
		1966	"There was an internal problem at your last logout, "
		1967	. "the server will try to bring you to your intended destination in a second.",
		1968	cf::NDI_RED);
		1969	# we need this sleep as the login has a concurrent enter_exit running
		1970	# and this sleep increases chances of the player not ending up in scorn
		1971	Coro::Timer::sleep 1;
		1972	$pl->ob->leave_link;
		1973	})->prio (2);
		1974	}
		1975	},
		1976	);
		1977
		1978	=item $player_object->goto ($path, $x, $y)
		1979
		1980	=cut
		1981
		1982	sub cf::object::player::goto {
		1983	my ($self, $path, $x, $y) = @_;
		1984
		1985	$self->enter_link;
		1986
		1987	(async {
		1988	my $map = eval {
		1989	my $map = cf::map::find $path;
		1990	$map = $map->customise_for ($self) if $map;
		1991	$map
		1992	} or
		1993	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1994
		1995	$self->leave_link ($map, $x, $y);
		1996	})->prio (1);
		1997	}
		1998
		1999	=item $player_object->enter_exit ($exit_object)
		2000
		2001	=cut
		2002
		2003	sub parse_random_map_params {
		2004	my ($spec) = @_;
		2005
		2006	my $rmp = { # defaults
		2007	xsize => (cf::rndm 15, 40),
		2008	ysize => (cf::rndm 15, 40),
		2009	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2010	#layout => string,
		2011	};
		2012
		2013	for (split /\n/, $spec) {
		2014	my ($k, $v) = split /\s+/, $_, 2;
		2015
		2016	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2017	}
		2018
		2019	$rmp
		2020	}
		2021
		2022	sub prepare_random_map {
		2023	my ($exit) = @_;
		2024
		2025	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2026
		2027	# all this does is basically replace the /! path by
		2028	# a new random map path (?random/...) with a seed
		2029	# that depends on the exit object
		2030
		2031	my $rmp = parse_random_map_params $exit->msg;
		2032
		2033	if ($exit->map) {
		2034	$rmp->{region} = $exit->region->name;
		2035	$rmp->{origin_map} = $exit->map->path;
		2036	$rmp->{origin_x} = $exit->x;
		2037	$rmp->{origin_y} = $exit->y;
		2038	}
		2039
		2040	$rmp->{random_seed} ||= $exit->random_seed;
		2041
		2042	my $data = cf::to_json $rmp;
		2043	my $md5 = Digest::MD5::md5_hex $data;
		2044	my $meta = "$RANDOMDIR/$md5.meta";
		2045
		2046	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2047	aio_write $fh, 0, (length $data), $data, 0;
		2048	undef $fh;
		2049	aio_rename "$meta~", $meta;
		2050
		2051	$exit->slaying ("?random/$md5");
		2052	$exit->msg (undef);
		2053	}
		2054	}
		2055
		2056	sub cf::object::player::enter_exit {
		2057	my ($self, $exit) = @_;
		2058
		2059	return unless $self->type == cf::PLAYER;
		2060
		2061	if ($exit->slaying eq "/!") {
		2062	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2063	# the problem is that $exit might not survive long enough
		2064	# so it needs to be done right now, right here
		2065	cf::sync_job { prepare_random_map $exit };
		2066	}
		2067
		2068	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2069	my $hp = $exit->stats->hp;
		2070	my $sp = $exit->stats->sp;
		2071
		2072	$self->enter_link;
		2073
		2074	(async {
		2075	$self->deactivate_recursive; # just to be sure
		2076	unless (eval {
		2077	$self->goto ($slaying, $hp, $sp);
		2078
		2079	1;
		2080	}) {
		2081	$self->message ("Something went wrong deep within the crossfire server. "
		2082	. "I'll try to bring you back to the map you were before. "
		2083	. "Please report this to the dungeon master!",
		2084	cf::NDI_UNIQUE | cf::NDI_RED);
		2085
		2086	warn "ERROR in enter_exit: $@";
		2087	$self->leave_link;
		2088	}
		2089	})->prio (1);
		2090	}
		2091
		2092	=head3 cf::client
		2093
		2094	=over 4
		2095
		2096	=item $client->send_drawinfo ($text, $flags)
		2097
		2098	Sends a drawinfo packet to the client. Circumvents output buffering so
		2099	should not be used under normal circumstances.
		2100
		2101	=cut
		2102
		2103	sub cf::client::send_drawinfo {
		2104	my ($self, $text, $flags) = @_;
		2105
		2106	utf8::encode $text;
		2107	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2108	}
		2109
		2110	=item $client->ext_event ($type, %msg)
		2111
		2112	Sends an exti event to the client.
		2113
		2114	=cut
		2115
		2116	sub cf::client::ext_event($$%) {
		2117	my ($self, $type, %msg) = @_;
		2118
		2119	$msg{msgtype} = "event_$type";
		2120	$self->send_packet ("ext " . cf::to_json \%msg);
		2121	}
		2122
		2123	=item $success = $client->query ($flags, "text", \&cb)
		2124
		2125	Queues a query to the client, calling the given callback with
		2126	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2127	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2128
		2129	Queries can fail, so check the return code. Or don't, as queries will become
		2130	reliable at some point in the future.
		2131
		2132	=cut
		2133
		2134	sub cf::client::query {
		2135	my ($self, $flags, $text, $cb) = @_;
		2136
		2137	return unless $self->state == ST_PLAYING
		2138	|| $self->state == ST_SETUP
		2139	|| $self->state == ST_CUSTOM;
		2140
		2141	$self->state (ST_CUSTOM);
		2142
		2143	utf8::encode $text;
		2144	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2145
		2146	$self->send_packet ($self->{query_queue}[0][0])
		2147	if @{ $self->{query_queue} } == 1;
		2148	}
		2149
		2150	cf::client->attach (
		2151	on_reply => sub {
		2152	my ($ns, $msg) = @_;
		2153
		2154	# this weird shuffling is so that direct followup queries
		2155	# get handled first
		2156	my $queue = delete $ns->{query_queue}
		2157	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2158
		2159	(shift @$queue)->[1]->($msg);
		2160	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2161
		2162	push @{ $ns->{query_queue} }, @$queue;
		2163
		2164	if (@{ $ns->{query_queue} } == @$queue) {
		2165	if (@$queue) {
		2166	$ns->send_packet ($ns->{query_queue}[0][0]);
		2167	} else {
		2168	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2169	}
		2170	}
		2171	},
		2172	);
		2173
		2174	=item $client->async (\&cb)
		2175
		2176	Create a new coroutine, running the specified callback. The coroutine will
		2177	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2178	or loss of connection).
		2179
		2180	=cut
		2181
		2182	sub cf::client::async {
		2183	my ($self, $cb) = @_;
		2184
		2185	my $coro = &Coro::async ($cb);
		2186
		2187	$coro->on_destroy (sub {
		2188	delete $self->{_coro}{$coro+0};
		2189	});
		2190
		2191	$self->{_coro}{$coro+0} = $coro;
		2192
		2193	$coro
		2194	}
		2195
		2196	cf::client->attach (
		2197	on_destroy => sub {
		2198	my ($ns) = @_;
		2199
		2200	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2201	},
		2202	);
		2203
		2204	=back
		2205
		2206
		2207	=head2 SAFE SCRIPTING
		2208
		2209	Functions that provide a safe environment to compile and execute
		2210	snippets of perl code without them endangering the safety of the server
		2211	itself. Looping constructs, I/O operators and other built-in functionality
		2212	is not available in the safe scripting environment, and the number of
		2213	functions and methods that can be called is greatly reduced.
		2214
		2215	=cut
		2216
		2217	our $safe = new Safe "safe";
		2218	our $safe_hole = new Safe::Hole;
		2219
		2220	$SIG{FPE} = 'IGNORE';
		2221
		2222	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		2223
		2224	# here we export the classes and methods available to script code
		2225
		2226	=pod
		2227
		2228	The following functions and methods are available within a safe environment:
		2229
		2230	cf::object contr pay_amount pay_player map
		2231	cf::object::player player
		2232	cf::player peaceful
		2233	cf::map trigger
		2234
		2235	=cut
		2236
		2237	for (
		2238	["cf::object" => qw(contr pay_amount pay_player map)],
		2239	["cf::object::player" => qw(player)],
		2240	["cf::player" => qw(peaceful)],
		2241	["cf::map" => qw(trigger)],
		2242	) {
		2243	no strict 'refs';
		2244	my ($pkg, @funs) = @$_;
		2245	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		2246	for @funs;
		2247	}
		2248
		2249	=over 4
		2250
		2251	=item @retval = safe_eval $code, [var => value, ...]
		2252
		2253	Compiled and executes the given perl code snippet. additional var/value
		2254	pairs result in temporary local (my) scalar variables of the given name
		2255	that are available in the code snippet. Example:
		2256
		2257	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2258
		2259	=cut
		2260
		2261	sub safe_eval($;@) {
		2262	my ($code, %vars) = @_;
		2263
		2264	my $qcode = $code;
		2265	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		2266	$qcode =~ s/\n/\\n/g;
		2267
		2268	local $_;
		2269	local @safe::cf::_safe_eval_args = values %vars;
		2270
		2271	my $eval =
		2272	"do {\n"
		2273	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		2274	. "#line 0 \"{$qcode}\"\n"
		2275	. $code
		2276	. "\n}"
		2277	;
		2278
		2279	sub_generation_inc;
		2280	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		2281	sub_generation_inc;
		2282
		2283	if ($@) {
		2284	warn "$@";
		2285	warn "while executing safe code '$code'\n";
		2286	warn "with arguments " . (join " ", %vars) . "\n";
		2287	}
		2288
		2289	wantarray ? @res : $res[0]
		2290	}
		2291
		2292	=item cf::register_script_function $function => $cb
		2293
		2294	Register a function that can be called from within map/npc scripts. The
		2295	function should be reasonably secure and should be put into a package name
		2296	like the extension.
		2297
		2298	Example: register a function that gets called whenever a map script calls
		2299	C<rent::overview>, as used by the C<rent> extension.
		2300
		2301	cf::register_script_function "rent::overview" => sub {
		2302	...
		2303	};
		2304
		2305	=cut
		2306
		2307	sub register_script_function {
		2308	my ($fun, $cb) = @_;
		2309
		2310	no strict 'refs';
		2311	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		2312	}
		2313
		2314	=back
		2315
		2316	=cut
		2317
		2318	#############################################################################
		2319
		2320	=head2 EXTENSION DATABASE SUPPORT
		2321
		2322	Crossfire maintains a very simple database for extension use. It can
		2323	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2324	convert to/from binary).
		2325
		2326	The parameter C<$family> should best start with the name of the extension
		2327	using it, it should be unique.
		2328
		2329	=over 4
		2330
		2331	=item $value = cf::db_get $family => $key
		2332
		2333	Returns a single value from the database.
		2334
		2335	=item cf::db_put $family => $key => $value
		2336
		2337	Stores the given C<$value> in the family.
		2338
		2339	=cut
		2340
		2341	our $DB;
		2342
		2343	sub db_init {
		2344	unless ($DB) {
		2345	$DB = BDB::db_create $DB_ENV;
		2346
		2347	cf::sync_job {
		2348	eval {
		2349	$DB->set_flags (BDB::CHKSUM);
		2350
		2351	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2352	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2353	cf::cleanup "db_open(db): $!" if $!;
		2354	};
		2355	cf::cleanup "db_open(db): $@" if $@;
		2356	};
		2357	}
		2358	}
		2359
		2360	sub db_get($$) {
		2361	my $key = "$_[0]/$_[1]";
		2362
		2363	cf::sync_job {
		2364	BDB::db_get $DB, undef, $key, my $data;
		2365
		2366	$! ? ()
		2367	: $data
		2368	}
		2369	}
		2370
		2371	sub db_put($$$) {
		2372	BDB::dbreq_pri 4;
		2373	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2374	}
		2375
		2376	=item cf::cache $id => [$paths...], $processversion => $process
		2377
		2378	Generic caching function that returns the value of the resource $id,
		2379	caching and regenerating as required.
		2380
		2381	This function can block.
		2382
		2383	=cut
		2384
		2385	sub cache {
		2386	my ($id, $src, $processversion, $process) = @_;
		2387
		2388	my $meta =
		2389	join "\x00",
		2390	$processversion,
		2391	map {
		2392	aio_stat $_
		2393	and Carp::croak "$_: $!";
		2394
		2395	($_, (stat _)[7,9])
		2396	} @$src;
		2397
		2398	my $dbmeta = db_get cache => "$id/meta";
		2399	if ($dbmeta ne $meta) {
		2400	# changed, we may need to process
		2401
		2402	my @data;
		2403	my $md5;
		2404
		2405	for (0 .. $#$src) {
		2406	0 <= aio_load $src->[$_], $data[$_]
		2407	or Carp::croak "$src->[$_]: $!";
		2408	}
		2409
		2410	# if processing is expensive, check
		2411	# checksum first
		2412	if (1) {
		2413	$md5 =
		2414	join "\x00",
		2415	$processversion,
		2416	map {
		2417	Coro::cede;
		2418	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2419	} 0.. $#$src;
		2420
		2421
		2422	my $dbmd5 = db_get cache => "$id/md5";
		2423	if ($dbmd5 eq $md5) {
		2424	db_put cache => "$id/meta", $meta;
		2425
		2426	return db_get cache => "$id/data";
		2427	}
		2428	}
		2429
		2430	my $t1 = Time::HiRes::time;
		2431	my $data = $process->(\@data);
		2432	my $t2 = Time::HiRes::time;
		2433
		2434	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2435
		2436	db_put cache => "$id/data", $data;
		2437	db_put cache => "$id/md5" , $md5;
		2438	db_put cache => "$id/meta", $meta;
		2439
		2440	return $data;
		2441	}
		2442
		2443	db_get cache => "$id/data"
		2444	}
		2445
		2446	=item fork_call { }, $args
		2447
		2448	Executes the given code block with the given arguments in a seperate
		2449	process, returning the results. Everything must be serialisable with
		2450	Coro::Storable. May, of course, block. Note that the executed sub may
		2451	never block itself or use any form of Event handling.
		2452
		2453	=cut
		2454
		2455	sub fork_call(&@) {
207	my ($who, $arg) = @_;	2456	my ($cb, @args) = @_;
208		2457
209	if ($who->flag (FLAG_WIZ)) {	2458	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
210	$who->message ("reloading...");	2459	# or die "socketpair: $!";
		2460	pipe my $fh1, my $fh2
		2461	or die "pipe: $!";
211		2462
212	warn "reloading...\n";	2463	if (my $pid = fork) {
		2464	close $fh2;
		2465
		2466	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2467	$res = Coro::Storable::thaw $res;
		2468
		2469	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2470
		2471	die $$res unless "ARRAY" eq ref $res;
		2472
		2473	return wantarray ? @$res : $res->[-1];
		2474	} else {
		2475	reset_signals;
		2476	local $SIG{__WARN__};
		2477	local $SIG{__DIE__};
213	eval {	2478	eval {
214	unload_extension $_ for @exts;	2479	close $fh1;
215	delete $INC{"cf.pm"};
216		2480
217	# don't, removes xs symbols, too	2481	my @res = eval { $cb->(@args) };
218	#Symbol::delete_package $pkg;	2482	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2483	};
219		2484
220	require cf;	2485	warn $@ if $@;
		2486	_exit 0;
		2487	}
		2488	}
		2489
		2490
		2491
		2492	#############################################################################
		2493	# the server's init and main functions
		2494
		2495	sub load_facedata($) {
		2496	my ($path) = @_;
		2497
		2498	warn "loading facedata from $path\n";
		2499
		2500	my $facedata;
		2501	0 < aio_load $path, $facedata
		2502	or die "$path: $!";
		2503
		2504	$facedata = Coro::Storable::thaw $facedata;
		2505
		2506	$facedata->{version} == 2
		2507	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2508
		2509	{
		2510	my $faces = $facedata->{faceinfo};
		2511
		2512	while (my ($face, $info) = each %$faces) {
		2513	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2514	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2515	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2516	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2517	Coro::cede;
		2518	}
		2519
		2520	while (my ($face, $info) = each %$faces) {
		2521	next unless $info->{smooth};
		2522	my $idx = cf::face::find $face
		2523	or next;
		2524	if (my $smooth = cf::face::find $info->{smooth}) {
		2525	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2526	} else {
		2527	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2528	}
		2529	Coro::cede;
		2530	}
		2531	}
		2532
		2533	{
		2534	my $anims = $facedata->{animinfo};
		2535
		2536	while (my ($anim, $info) = each %$anims) {
		2537	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2538	Coro::cede;
		2539	}
		2540
		2541	cf::anim::invalidate_all; # d'oh
		2542	}
		2543
		2544	1
		2545	}
		2546
		2547	sub reload_regions {
		2548	load_resource_file "$MAPDIR/regions"
		2549	or die "unable to load regions file\n";
		2550	}
		2551
		2552	sub reload_facedata {
		2553	load_facedata "$DATADIR/facedata"
		2554	or die "unable to load facedata\n";
		2555	}
		2556
		2557	sub reload_archetypes {
		2558	load_resource_file "$DATADIR/archetypes"
		2559	or die "unable to load archetypes\n";
		2560	}
		2561
		2562	sub reload_treasures {
		2563	load_resource_file "$DATADIR/treasures"
		2564	or die "unable to load treasurelists\n";
		2565	}
		2566
		2567	sub reload_resources {
		2568	warn "reloading resource files...\n";
		2569
		2570	reload_regions;
		2571	reload_facedata;
		2572	reload_archetypes;
		2573	reload_treasures;
		2574
		2575	warn "finished reloading resource files\n";
		2576	}
		2577
		2578	sub init {
		2579	reload_resources;
		2580	}
		2581
		2582	sub cfg_load {
		2583	open my $fh, "<:utf8", "$CONFDIR/config"
		2584	or return;
		2585
		2586	local $/;
		2587	*CFG = YAML::Syck::Load <$fh>;
		2588
		2589	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2590
		2591	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2592	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2593
		2594	if (exists $CFG{mlockall}) {
		2595	eval {
		2596	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2597	and die "WARNING: m(un)lockall failed: $!\n";
221	};	2598	};
222	warn $@ if $@;	2599	warn $@ if $@;
223	$who->message ($@) if $@;	2600	}
		2601	}
		2602
		2603	sub main {
		2604	# we must not ever block the main coroutine
		2605	local $Coro::idle = sub {
		2606	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2607	(async {
		2608	Event::one_event;
		2609	})->prio (Coro::PRIO_MAX);
		2610	};
		2611
		2612	cfg_load;
		2613	db_init;
		2614	load_extensions;
		2615
		2616	$TICK_WATCHER->start;
		2617	Event::loop;
		2618	}
		2619
		2620	#############################################################################
		2621	# initialisation and cleanup
		2622
		2623	# install some emergency cleanup handlers
		2624	BEGIN {
		2625	for my $signal (qw(INT HUP TERM)) {
		2626	Event->signal (
		2627	reentrant => 0,
		2628	data => WF_AUTOCANCEL,
		2629	signal => $signal,
		2630	prio => 0,
		2631	cb => sub {
		2632	cf::cleanup "SIG$signal";
		2633	},
		2634	);
		2635	}
		2636	}
		2637
		2638	sub emergency_save() {
		2639	my $freeze_guard = cf::freeze_mainloop;
		2640
		2641	warn "enter emergency perl save\n";
		2642
		2643	cf::sync_job {
		2644	# use a peculiar iteration method to avoid tripping on perl
		2645	# refcount bugs in for. also avoids problems with players
		2646	# and maps saved/destroyed asynchronously.
		2647	warn "begin emergency player save\n";
		2648	for my $login (keys %cf::PLAYER) {
		2649	my $pl = $cf::PLAYER{$login} or next;
		2650	$pl->valid or next;
		2651	$pl->save;
		2652	}
		2653	warn "end emergency player save\n";
		2654
		2655	warn "begin emergency map save\n";
		2656	for my $path (keys %cf::MAP) {
		2657	my $map = $cf::MAP{$path} or next;
		2658	$map->valid or next;
		2659	$map->save;
		2660	}
		2661	warn "end emergency map save\n";
		2662
		2663	warn "begin emergency database checkpoint\n";
		2664	BDB::db_env_txn_checkpoint $DB_ENV;
		2665	warn "end emergency database checkpoint\n";
		2666	};
		2667
		2668	warn "leave emergency perl save\n";
		2669	}
		2670
		2671	sub post_cleanup {
		2672	my ($make_core) = @_;
		2673
		2674	warn Carp::longmess "post_cleanup backtrace"
		2675	if $make_core;
		2676	}
		2677
		2678	sub do_reload_perl() {
		2679	# can/must only be called in main
		2680	if ($Coro::current != $Coro::main) {
		2681	warn "can only reload from main coroutine";
		2682	return;
		2683	}
		2684
		2685	warn "reloading...";
		2686
		2687	warn "entering sync_job";
		2688
		2689	cf::sync_job {
		2690	cf::write_runtime; # external watchdog should not bark
		2691	cf::emergency_save;
		2692	cf::write_runtime; # external watchdog should not bark
		2693
		2694	warn "syncing database to disk";
		2695	BDB::db_env_txn_checkpoint $DB_ENV;
		2696
		2697	# if anything goes wrong in here, we should simply crash as we already saved
		2698
		2699	warn "cancelling all WF_AUTOCANCEL watchers";
		2700	for (Event::all_watchers) {
		2701	$_->cancel if $_->data & WF_AUTOCANCEL;
		2702	}
		2703
		2704	warn "flushing outstanding aio requests";
		2705	for (;;) {
		2706	BDB::flush;
		2707	IO::AIO::flush;
		2708	Coro::cede;
		2709	last unless IO::AIO::nreqs || BDB::nreqs;
		2710	warn "iterate...";
		2711	}
		2712
		2713	++$RELOAD;
		2714
		2715	warn "cancelling all extension coros";
		2716	$_->cancel for values %EXT_CORO;
		2717	%EXT_CORO = ();
		2718
		2719	warn "removing commands";
		2720	%COMMAND = ();
		2721
		2722	warn "removing ext commands";
		2723	%EXTCMD = ();
		2724
		2725	warn "unloading/nuking all extensions";
		2726	for my $pkg (@EXTS) {
		2727	warn "... unloading $pkg";
		2728
		2729	if (my $cb = $pkg->can ("unload")) {
		2730	eval {
		2731	$cb->($pkg);
		2732	1
		2733	} or warn "$pkg unloaded, but with errors: $@";
		2734	}
		2735
		2736	warn "... nuking $pkg";
		2737	Symbol::delete_package $pkg;
		2738	}
		2739
		2740	warn "unloading all perl modules loaded from $LIBDIR";
		2741	while (my ($k, $v) = each %INC) {
		2742	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2743
		2744	warn "... unloading $k";
		2745	delete $INC{$k};
		2746
		2747	$k =~ s/\.pm$//;
		2748	$k =~ s/\//::/g;
		2749
		2750	if (my $cb = $k->can ("unload_module")) {
		2751	$cb->();
		2752	}
		2753
		2754	Symbol::delete_package $k;
		2755	}
		2756
		2757	warn "getting rid of safe::, as good as possible";
		2758	Symbol::delete_package "safe::$_"
		2759	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2760
		2761	warn "unloading cf.pm \"a bit\"";
		2762	delete $INC{"cf.pm"};
		2763	delete $INC{"cf/pod.pm"};
		2764
		2765	# don't, removes xs symbols, too,
		2766	# and global variables created in xs
		2767	#Symbol::delete_package __PACKAGE__;
		2768
		2769	warn "unload completed, starting to reload now";
		2770
		2771	warn "reloading cf.pm";
		2772	require cf;
		2773	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2774
		2775	warn "loading config and database again";
		2776	cf::cfg_load;
		2777
		2778	warn "loading extensions";
		2779	cf::load_extensions;
		2780
		2781	warn "reattaching attachments to objects/players";
		2782	_global_reattach; # objects, sockets
		2783	warn "reattaching attachments to maps";
		2784	reattach $_ for values %MAP;
		2785	warn "reattaching attachments to players";
		2786	reattach $_ for values %PLAYER;
		2787
		2788	warn "leaving sync_job";
		2789
		2790	1
		2791	} or do {
		2792	warn $@;
		2793	warn "error while reloading, exiting.";
		2794	exit 1;
		2795	};
		2796
224	warn "reloaded\n";	2797	warn "reloaded";
		2798	};
225		2799
		2800	our $RELOAD_WATCHER; # used only during reload
		2801
		2802	sub reload_perl() {
		2803	# doing reload synchronously and two reloads happen back-to-back,
		2804	# coro crashes during coro_state_free->destroy here.
		2805
		2806	$RELOAD_WATCHER ||= Event->timer (
		2807	reentrant => 0,
		2808	after => 0,
		2809	data => WF_AUTOCANCEL,
		2810	cb => sub {
		2811	do_reload_perl;
		2812	undef $RELOAD_WATCHER;
		2813	},
		2814	);
		2815	}
		2816
		2817	register_command "reload" => sub {
		2818	my ($who, $arg) = @_;
		2819
		2820	if ($who->flag (FLAG_WIZ)) {
226	$who->message ("reloaded");	2821	$who->message ("reloading server.");
		2822	async { reload_perl };
		2823	}
		2824	};
		2825
		2826	unshift @INC, $LIBDIR;
		2827
		2828	my $bug_warning = 0;
		2829
		2830	our @WAIT_FOR_TICK;
		2831	our @WAIT_FOR_TICK_BEGIN;
		2832
		2833	sub wait_for_tick {
		2834	return unless $TICK_WATCHER->is_active;
		2835	return if $Coro::current == $Coro::main;
		2836
		2837	my $signal = new Coro::Signal;
		2838	push @WAIT_FOR_TICK, $signal;
		2839	$signal->wait;
		2840	}
		2841
		2842	sub wait_for_tick_begin {
		2843	return unless $TICK_WATCHER->is_active;
		2844	return if $Coro::current == $Coro::main;
		2845
		2846	my $signal = new Coro::Signal;
		2847	push @WAIT_FOR_TICK_BEGIN, $signal;
		2848	$signal->wait;
		2849	}
		2850
		2851	$TICK_WATCHER = Event->timer (
		2852	reentrant => 0,
		2853	parked => 1,
		2854	prio => 0,
		2855	at => $NEXT_TICK || $TICK,
		2856	data => WF_AUTOCANCEL,
		2857	cb => sub {
		2858	if ($Coro::current != $Coro::main) {
		2859	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2860	unless ++$bug_warning > 10;
		2861	return;
		2862	}
		2863
		2864	$NOW = $tick_start = Event::time;
		2865
		2866	cf::server_tick; # one server iteration
		2867
		2868	$RUNTIME += $TICK;
		2869	$NEXT_TICK += $TICK;
		2870
		2871	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2872	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2873	Coro::async_pool {
		2874	write_runtime
		2875	or warn "ERROR: unable to write runtime file: $!";
		2876	};
		2877	}
		2878
		2879	# my $AFTER = Event::time;
		2880	# warn $AFTER - $NOW;#d#
		2881
		2882	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2883	$sig->send;
		2884	}
		2885	while (my $sig = shift @WAIT_FOR_TICK) {
		2886	$sig->send;
		2887	}
		2888
		2889	$NOW = Event::time;
		2890
		2891	# if we are delayed by four ticks or more, skip them all
		2892	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		2893
		2894	$TICK_WATCHER->at ($NEXT_TICK);
		2895	$TICK_WATCHER->start;
		2896
		2897	$LOAD = ($NOW - $tick_start) / $TICK;
		2898	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2899
		2900	_post_tick;
		2901
		2902
		2903	},
		2904	);
		2905
		2906	{
		2907	BDB::max_poll_time $TICK * 0.1;
		2908	$BDB_POLL_WATCHER = Event->io (
		2909	reentrant => 0,
		2910	fd => BDB::poll_fileno,
		2911	poll => 'r',
		2912	prio => 0,
		2913	data => WF_AUTOCANCEL,
		2914	cb => \&BDB::poll_cb,
		2915	);
		2916	BDB::min_parallel 8;
		2917
		2918	BDB::set_sync_prepare {
		2919	my $status;
		2920	my $current = $Coro::current;
		2921	(
		2922	sub {
		2923	$status = $!;
		2924	$current->ready; undef $current;
		2925	},
		2926	sub {
		2927	Coro::schedule while defined $current;
		2928	$! = $status;
		2929	},
		2930	)
		2931	};
		2932
		2933	unless ($DB_ENV) {
		2934	$DB_ENV = BDB::db_env_create;
		2935
		2936	cf::sync_job {
		2937	eval {
		2938	BDB::db_env_open
		2939	$DB_ENV,
		2940	$BDBDIR,
		2941	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2942	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2943	0666;
		2944
		2945	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2946
		2947	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2948	$DB_ENV->set_lk_detect;
		2949	};
		2950
		2951	cf::cleanup "db_env_open(db): $@" if $@;
		2952	};
		2953	}
		2954	}
		2955
		2956	{
		2957	IO::AIO::min_parallel 8;
		2958
		2959	undef $Coro::AIO::WATCHER;
		2960	IO::AIO::max_poll_time $TICK * 0.1;
		2961	$AIO_POLL_WATCHER = Event->io (
		2962	reentrant => 0,
		2963	data => WF_AUTOCANCEL,
		2964	fd => IO::AIO::poll_fileno,
		2965	poll => 'r',
		2966	prio => 6,
		2967	cb => \&IO::AIO::poll_cb,
		2968	);
		2969	}
		2970
		2971	my $_log_backtrace;
		2972
		2973	sub _log_backtrace {
		2974	my ($msg, @addr) = @_;
		2975
		2976	$msg =~ s/\n//;
		2977
		2978	# limit the # of concurrent backtraces
		2979	if ($_log_backtrace < 2) {
		2980	++$_log_backtrace;
		2981	async {
		2982	my @bt = fork_call {
		2983	@addr = map { sprintf "%x", $_ } @addr;
		2984	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		2985	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		2986	or die "addr2line: $!";
		2987
		2988	my @funcs;
		2989	my @res = <$fh>;
		2990	chomp for @res;
		2991	while (@res) {
		2992	my ($func, $line) = splice @res, 0, 2, ();
		2993	push @funcs, "[$func] $line";
		2994	}
		2995
		2996	@funcs
		2997	};
		2998
		2999	LOG llevInfo, "[ABT] $msg\n";
		3000	LOG llevInfo, "[ABT] $_\n" for @bt;
		3001	--$_log_backtrace;
		3002	};
227	} else {	3003	} else {
228	$who->message ("Intruder Alert!");	3004	LOG llevInfo, "[ABT] $msg\n";
		3005	LOG llevInfo, "[ABT] [suppressed]\n";
229	}	3006	}
230	};
231
232	#############################################################################
233	# extcmd framework, basically convert ext <id> <pkg> arg1 args
234	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
235
236	sub on_extcmd {
237	my ($pl, $buf) = @_;
238
239	my ($type) = $buf =~ s/^(\S+) // ? $1 : "";
240
241	$extcmd{$type}[0]->($pl, $buf)
242	if $extcmd{$type};
243	}	3007	}
244		3008
245	#############################################################################	3009	# load additional modules
246	# load/save/clean perl data associated with a map	3010	use cf::pod;
247		3011
248	*on_mapclean = sub {	3012	END { cf::emergency_save }
249	my ($map) = @_;
250
251	my $path = $map->tmpname;
252	defined $path or return;
253
254	unlink "$path.cfperl";
255	};
256
257	*on_mapin =
258	*on_mapload = sub {
259	my ($map) = @_;
260
261	my $path = $map->tmpname;
262	$path = $map->path unless defined $path;
263
264	open my $fh, "<:raw", "$path.cfperl"
265	or return; # no perl data
266
267	my $data = Storable::thaw do { local $/; <$fh> };
268
269	$data->{version} <= 1
270	or return; # too new
271
272	$map->_set_obs ($data->{obs});
273	};
274
275	*on_mapout = sub {
276	my ($map) = @_;
277
278	my $path = $map->tmpname;
279	$path = $map->path unless defined $path;
280
281	my $obs = $map->_get_obs;
282
283	if (defined $obs) {
284	open my $fh, ">:raw", "$path.cfperl"
285	or die "$path.cfperl: $!";
286
287	stat $path;
288
289	print $fh Storable::nfreeze {
290	size => (stat _)[7],
291	time => (stat _)[9],
292	version => 1,
293	obs => $obs,
294	};
295
296	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
297	} else {
298	unlink "$path.cfperl";
299	}
300	};
301
302	#############################################################################
303	# load/save perl data associated with player->ob objects
304
305	*on_player_load = sub {
306	my ($ob, $path) = @_;
307
308	if (open my $fh, "<:raw", "$path.cfperl") {
309
310	#d##TODO#remove
311
312	my $data = Storable::thaw do { local $/; <$fh> };
313
314	$data->{version} <= 1
315	or return; # too new
316
317	%$ob = %{$data->{ob}};
318	return;
319	}
320
321	for my $o ($ob, $ob->inv) {
322	if (my $value = $o->get_ob_key_value ("_perl_data")) {
323	$o->set_ob_key_value ("_perl_data");
324
325	%$o = %{ Storable::thaw pack "H*", $value };
326	}
327	}
328	};
329
330	*on_player_save = sub {
331	my ($ob, $path) = @_;
332
333	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
334	for grep %$_, $ob, $ob->inv;
335
336	unlink "$path.cfperl";#d##TODO#remove
337	};
338
339	register "<global>", __PACKAGE__;
340
341	load_extensions;
342		3013
343	1	3014	1
344		3015

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