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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.19 by root, Sun Jul 16 17:15:39 2006 UTC vs.
Revision 1.278 by root, Mon Jun 11 21:38:14 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, $msg;
27	};	184	};
28	}	185	}
29		186
30	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
		193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
31		194
32	# generate property mutators	195	# we bless all objects into (empty) derived classes to force a method lookup
33	sub prop_gen {	196	# within the Safe compartment.
34	my ($prefix, $class) = @_;	197	for my $pkg (qw(
35		198	cf::global cf::attachable
		199	cf::object cf::object::player
		200	cf::client cf::player
		201	cf::arch cf::living
		202	cf::map cf::party cf::region
		203	)) {
36	no strict 'refs';	204	no strict 'refs';
37		205	@{"safe::$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	}	206	}
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		207
69	$Event::DIED = sub {	208	$Event::DIED = sub {
70	warn "error in event callback: @_";	209	warn "error in event callback: @_";
71	};	210	};
72		211
73	my %ext_pkg;	212	=head2 UTILITY FUNCTIONS
74	my @exts;
75	my @hook;
76	my %command;
77	my %extcmd;
78		213
79	sub inject_event {	214	=over 4
80	my $extension = shift;	215
		216	=item dumpval $ref
		217
		218	=cut
		219
		220	sub dumpval {
		221	eval {
		222	local $SIG{__DIE__};
		223	my $d;
		224	if (1) {
		225	$d = new Data::Dumper([$_[0]], ["*var"]);
		226	$d->Terse(1);
		227	$d->Indent(2);
		228	$d->Quotekeys(0);
		229	$d->Useqq(1);
		230	#$d->Bless(...);
		231	$d->Seen($_[1]) if @_ > 1;
		232	$d = $d->Dump();
		233	}
		234	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		235	$d
		236	} || "[unable to dump $_[0]: '$@']";
		237	}
		238
		239	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		240
		241	=item $ref = cf::from_json $json
		242
		243	Converts a JSON string into the corresponding perl data structure.
		244
		245	=item $json = cf::to_json $ref
		246
		247	Converts a perl data structure into its JSON representation.
		248
		249	=item cf::lock_wait $string
		250
		251	Wait until the given lock is available. See cf::lock_acquire.
		252
		253	=item my $lock = cf::lock_acquire $string
		254
		255	Wait until the given lock is available and then acquires it and returns
		256	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		257	for example when the coroutine gets canceled), the lock is automatically
		258	returned.
		259
		260	Lock names should begin with a unique identifier (for example, cf::map::find
		261	uses map_find and cf::map::load uses map_load).
		262
		263	=item $locked = cf::lock_active $string
		264
		265	Return true if the lock is currently active, i.e. somebody has locked it.
		266
		267	=cut
		268
		269	our %LOCK;
		270
		271	sub lock_wait($) {
		272	my ($key) = @_;
		273
		274	# wait for lock, if any
		275	while ($LOCK{$key}) {
		276	push @{ $LOCK{$key} }, $Coro::current;
		277	Coro::schedule;
		278	}
		279	}
		280
		281	sub lock_acquire($) {
		282	my ($key) = @_;
		283
		284	# wait, to be sure we are not locked
		285	lock_wait $key;
		286
		287	$LOCK{$key} = [];
		288
		289	Coro::guard {
		290	# wake up all waiters, to be on the safe side
		291	$_->ready for @{ delete $LOCK{$key} };
		292	}
		293	}
		294
		295	sub lock_active($) {
		296	my ($key) = @_;
		297
		298	! ! $LOCK{$key}
		299	}
		300
		301	sub freeze_mainloop {
		302	return unless $TICK_WATCHER->is_active;
		303
		304	my $guard = Coro::guard {
		305	$TICK_WATCHER->start;
		306	};
		307	$TICK_WATCHER->stop;
		308	$guard
		309	}
		310
		311	=item cf::async { BLOCK }
		312
		313	Currently the same as Coro::async_pool, meaning you cannot use
		314	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		315	thing you are allowed to do is call C<prio> on it.
		316
		317	=cut
		318
		319	BEGIN { *async = \&Coro::async_pool }
		320
		321	=item cf::sync_job { BLOCK }
		322
		323	The design of crossfire+ requires that the main coro ($Coro::main) is
		324	always able to handle events or runnable, as crossfire+ is only partly
		325	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		326
		327	If it must be done, put the blocking parts into C<sync_job>. This will run
		328	the given BLOCK in another coroutine while waiting for the result. The
		329	server will be frozen during this time, so the block should either finish
		330	fast or be very important.
		331
		332	=cut
		333
		334	sub sync_job(&) {
		335	my ($job) = @_;
		336
		337	if ($Coro::current == $Coro::main) {
		338	my $time = Event::time;
		339
		340	# this is the main coro, too bad, we have to block
		341	# till the operation succeeds, freezing the server :/
		342
		343	# TODO: use suspend/resume instead
		344	# (but this is cancel-safe)
		345	my $freeze_guard = freeze_mainloop;
		346
		347	my $busy = 1;
		348	my @res;
		349
		350	(async {
		351	@res = eval { $job->() };
		352	warn $@ if $@;
		353	undef $busy;
		354	})->prio (Coro::PRIO_MAX);
		355
		356	while ($busy) {
		357	Coro::cede or Event::one_event;
		358	}
		359
		360	$time = Event::time - $time;
		361
		362	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		363	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		364
		365	$tick_start += $time; # do not account sync jobs to server load
		366
		367	wantarray ? @res : $res[0]
		368	} else {
		369	# we are in another coroutine, how wonderful, everything just works
		370
		371	$job->()
		372	}
		373	}
		374
		375	=item $coro = cf::async_ext { BLOCK }
		376
		377	Like async, but this coro is automatically being canceled when the
		378	extension calling this is being unloaded.
		379
		380	=cut
		381
		382	sub async_ext(&) {
81	my $event_code = shift;	383	my $cb = shift;
82		384
83	my $cb = $hook[$event_code]{$extension}	385	my $coro = &Coro::async ($cb);
		386
		387	$coro->on_destroy (sub {
		388	delete $EXT_CORO{$coro+0};
		389	});
		390	$EXT_CORO{$coro+0} = $coro;
		391
		392	$coro
		393	}
		394
		395	sub write_runtime {
		396	my $runtime = "$LOCALDIR/runtime";
		397
		398	# first touch the runtime file to show we are still running:
		399	# the fsync below can take a very very long time.
		400
		401	IO::AIO::aio_utime $runtime, undef, undef;
		402
		403	my $guard = cf::lock_acquire "write_runtime";
		404
		405	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
84	or return;	406	or return;
85		407
86	&$cb	408	my $value = $cf::RUNTIME + 90 + 10;
87	}	409	# 10 is the runtime save interval, for a monotonic clock
		410	# 60 allows for the watchdog to kill the server.
88		411
89	sub inject_global_event {	412	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		413	and return;
		414
		415	# always fsync - this file is important
		416	aio_fsync $fh
		417	and return;
		418
		419	# touch it again to show we are up-to-date
		420	aio_utime $fh, undef, undef;
		421
		422	close $fh
		423	or return;
		424
		425	aio_rename "$runtime~", $runtime
		426	and return;
		427
		428	warn "runtime file written.\n";
		429
		430	1
		431	}
		432
		433	=item cf::datalog type => key => value, ...
		434
		435	Log a datalog packet of the given type with the given key-value pairs.
		436
		437	=cut
		438
		439	sub datalog($@) {
		440	my ($type, %kv) = @_;
		441	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		442	}
		443
		444	=back
		445
		446	=cut
		447
		448	#############################################################################
		449
		450	=head2 ATTACHABLE OBJECTS
		451
		452	Many objects in crossfire are so-called attachable objects. That means you can
		453	attach callbacks/event handlers (a collection of which is called an "attachment")
		454	to it. All such attachable objects support the following methods.
		455
		456	In the following description, CLASS can be any of C<global>, C<object>
		457	C<player>, C<client> or C<map> (i.e. the attachable objects in
		458	crossfire+).
		459
		460	=over 4
		461
		462	=item $attachable->attach ($attachment, key => $value...)
		463
		464	=item $attachable->detach ($attachment)
		465
		466	Attach/detach a pre-registered attachment to a specific object and give it
		467	the specified key/value pairs as arguments.
		468
		469	Example, attach a minesweeper attachment to the given object, making it a
		470	10x10 minesweeper game:
		471
		472	$obj->attach (minesweeper => width => 10, height => 10);
		473
		474	=item $bool = $attachable->attached ($name)
		475
		476	Checks wether the named attachment is currently attached to the object.
		477
		478	=item cf::CLASS->attach ...
		479
		480	=item cf::CLASS->detach ...
		481
		482	Define an anonymous attachment and attach it to all objects of the given
		483	CLASS. See the next function for an explanation of its arguments.
		484
		485	You can attach to global events by using the C<cf::global> class.
		486
		487	Example, log all player logins:
		488
		489	cf::player->attach (
		490	on_login => sub {
		491	my ($pl) = @_;
		492	...
		493	},
		494	);
		495
		496	Example, attach to the jeweler skill:
		497
		498	cf::object->attach (
		499	type => cf::SKILL,
		500	subtype => cf::SK_JEWELER,
		501	on_use_skill => sub {
		502	my ($sk, $ob, $part, $dir, $msg) = @_;
		503	...
		504	},
		505	);
		506
		507	=item cf::CLASS::attachment $name, ...
		508
		509	Register an attachment by C<$name> through which attachable objects of the
		510	given CLASS can refer to this attachment.
		511
		512	Some classes such as crossfire maps and objects can specify attachments
		513	that are attached at load/instantiate time, thus the need for a name.
		514
		515	These calls expect any number of the following handler/hook descriptions:
		516
		517	=over 4
		518
		519	=item prio => $number
		520
		521	Set the priority for all following handlers/hooks (unless overwritten
		522	by another C<prio> setting). Lower priority handlers get executed
		523	earlier. The default priority is C<0>, and many built-in handlers are
		524	registered at priority C<-1000>, so lower priorities should not be used
		525	unless you know what you are doing.
		526
		527	=item type => $type
		528
		529	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		530	given type of objects only (the additional parameter C<subtype> can be
		531	used to further limit to the given subtype).
		532
		533	=item on_I<event> => \&cb
		534
		535	Call the given code reference whenever the named event happens (event is
		536	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		537	handlers are recognised generally depends on the type of object these
		538	handlers attach to).
		539
		540	See F<include/eventinc.h> for the full list of events supported, and their
		541	class.
		542
		543	=item package => package::
		544
		545	Look for sub functions of the name C<< on_I<event> >> in the given
		546	package and register them. Only handlers for eevents supported by the
		547	object/class are recognised.
		548
		549	=back
		550
		551	Example, define an attachment called "sockpuppet" that calls the given
		552	event handler when a monster attacks:
		553
		554	cf::object::attachment sockpuppet =>
		555	on_skill_attack => sub {
		556	my ($self, $victim) = @_;
		557	...
		558	}
		559	}
		560
		561	=item $attachable->valid
		562
		563	Just because you have a perl object does not mean that the corresponding
		564	C-level object still exists. If you try to access an object that has no
		565	valid C counterpart anymore you get an exception at runtime. This method
		566	can be used to test for existence of the C object part without causing an
		567	exception.
		568
		569	=cut
		570
		571	# the following variables are defined in .xs and must not be re-created
		572	our @CB_GLOBAL = (); # registry for all global events
		573	our @CB_ATTACHABLE = (); # registry for all attachables
		574	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		575	our @CB_PLAYER = ();
		576	our @CB_CLIENT = ();
		577	our @CB_TYPE = (); # registry for type (cf-object class) based events
		578	our @CB_MAP = ();
		579
		580	my %attachment;
		581
		582	sub cf::attachable::thawer_merge {
		583	# simply override everything except _meta
		584	local $_[0]{_meta};
		585	%{$_[0]} = %{$_[1]};
		586	}
		587
		588	sub _attach_cb($$$$) {
		589	my ($registry, $event, $prio, $cb) = @_;
		590
		591	use sort 'stable';
		592
		593	$cb = [$prio, $cb];
		594
		595	@{$registry->[$event]} = sort
		596	{ $a->[0] cmp $b->[0] }
		597	@{$registry->[$event] || []}, $cb;
		598	}
		599
		600	# hack
		601	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		602
		603	# attach handles attaching event callbacks
		604	# the only thing the caller has to do is pass the correct
		605	# registry (== where the callback attaches to).
		606	sub _attach {
		607	my ($registry, $klass, @arg) = @_;
		608
		609	my $object_type;
		610	my $prio = 0;
		611	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		612
		613	#TODO: get rid of this hack
		614	if ($attachable_klass{$klass}) {
		615	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		616	}
		617
		618	while (@arg) {
		619	my $type = shift @arg;
		620
		621	if ($type eq "prio") {
		622	$prio = shift @arg;
		623
		624	} elsif ($type eq "type") {
		625	$object_type = shift @arg;
		626	$registry = $CB_TYPE[$object_type] ||= [];
		627
		628	} elsif ($type eq "subtype") {
		629	defined $object_type or Carp::croak "subtype specified without type";
		630	my $object_subtype = shift @arg;
		631	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		632
		633	} elsif ($type eq "package") {
		634	my $pkg = shift @arg;
		635
		636	while (my ($name, $id) = each %cb_id) {
		637	if (my $cb = $pkg->can ($name)) {
		638	_attach_cb $registry, $id, $prio, $cb;
		639	}
		640	}
		641
		642	} elsif (exists $cb_id{$type}) {
		643	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		644
		645	} elsif (ref $type) {
		646	warn "attaching objects not supported, ignoring.\n";
		647
		648	} else {
		649	shift @arg;
		650	warn "attach argument '$type' not supported, ignoring.\n";
		651	}
		652	}
		653	}
		654
		655	sub _object_attach {
		656	my ($obj, $name, %arg) = @_;
		657
		658	return if exists $obj->{_attachment}{$name};
		659
		660	if (my $attach = $attachment{$name}) {
		661	my $registry = $obj->registry;
		662
		663	for (@$attach) {
		664	my ($klass, @attach) = @$_;
		665	_attach $registry, $klass, @attach;
		666	}
		667
		668	$obj->{$name} = \%arg;
		669	} else {
		670	warn "object uses attachment '$name' that is not available, postponing.\n";
		671	}
		672
		673	$obj->{_attachment}{$name} = undef;
		674	}
		675
		676	sub cf::attachable::attach {
		677	if (ref $_[0]) {
		678	_object_attach @_;
		679	} else {
		680	_attach shift->_attach_registry, @_;
		681	}
		682	_recalc_want;
		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	_recalc_want;
		696	};
		697
		698	sub cf::attachable::attached {
		699	my ($obj, $name) = @_;
		700
		701	exists $obj->{_attachment}{$name}
		702	}
		703
		704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
		709
		710	sub cf::\L$klass\E::attachment {
		711	my \$name = shift;
		712
		713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
		717	}
		718
		719	our $override;
		720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		721
		722	sub override {
		723	$override = 1;
		724	@invoke_results = ();
		725	}
		726
		727	sub do_invoke {
90	my $event = shift;	728	my $event = shift;
		729	my $callbacks = shift;
91		730
92	my $cb = $hook[$event]	731	@invoke_results = ();
		732
		733	local $override;
		734
		735	for (@$callbacks) {
		736	eval { &{$_->[1]} };
		737
		738	if ($@) {
		739	warn "$@";
		740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		741	override;
		742	}
		743
		744	return 1 if $override;
		745	}
		746
		747	0
		748	}
		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
		760	=back
		761
		762	=cut
		763
		764	#############################################################################
		765	# object support
		766
		767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
		769	my ($obj) = @_;
		770
		771	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		772
		773	my $registry = $obj->registry;
		774
		775	@$registry = ();
		776
		777	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		778
		779	for my $name (keys %{ $obj->{_attachment} || {} }) {
		780	if (my $attach = $attachment{$name}) {
		781	for (@$attach) {
		782	my ($klass, @attach) = @$_;
		783	_attach $registry, $klass, @attach;
		784	}
		785	} else {
		786	warn "object uses attachment '$name' that is not available, postponing.\n";
		787	}
		788	}
		789	}
		790
		791	cf::attachable->attach (
		792	prio => -1000000,
		793	on_instantiate => sub {
		794	my ($obj, $data) = @_;
		795
		796	$data = from_json $data;
		797
		798	for (@$data) {
		799	my ($name, $args) = @$_;
		800
		801	$obj->attach ($name, %{$args || {} });
		802	}
		803	},
		804	on_reattach => \&reattach,
		805	on_clone => sub {
		806	my ($src, $dst) = @_;
		807
		808	@{$dst->registry} = @{$src->registry};
		809
		810	%$dst = %$src;
		811
		812	%{$dst->{_attachment}} = %{$src->{_attachment}}
		813	if exists $src->{_attachment};
		814	},
		815	);
		816
		817	sub object_freezer_save {
		818	my ($filename, $rdata, $objs) = @_;
		819
		820	sync_job {
		821	if (length $$rdata) {
		822	warn sprintf "saving %s (%d,%d)\n",
		823	$filename, length $$rdata, scalar @$objs;
		824
		825	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		826	chmod SAVE_MODE, $fh;
		827	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		828	aio_fsync $fh if $cf::USE_FSYNC;
		829	close $fh;
		830
		831	if (@$objs) {
		832	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		833	chmod SAVE_MODE, $fh;
		834	my $data = Storable::nfreeze { version => 1, objs => $objs };
		835	aio_write $fh, 0, (length $data), $data, 0;
		836	aio_fsync $fh if $cf::USE_FSYNC;
		837	close $fh;
		838	aio_rename "$filename.pst~", "$filename.pst";
		839	}
		840	} else {
		841	aio_unlink "$filename.pst";
		842	}
		843
		844	aio_rename "$filename~", $filename;
		845	} else {
		846	warn "FATAL: $filename~: $!\n";
		847	}
		848	} else {
		849	aio_unlink $filename;
		850	aio_unlink "$filename.pst";
		851	}
		852	}
		853	}
		854
		855	sub object_freezer_as_string {
		856	my ($rdata, $objs) = @_;
		857
		858	use Data::Dumper;
		859
		860	$$rdata . Dumper $objs
		861	}
		862
		863	sub object_thawer_load {
		864	my ($filename) = @_;
		865
		866	my ($data, $av);
		867
		868	(aio_load $filename, $data) >= 0
93	or return;	869	or return;
94		870
95	List::Util::max map &$_, values %$cb	871	unless (aio_stat "$filename.pst") {
96	}	872	(aio_load "$filename.pst", $av) >= 0
97		873	or return;
98	sub inject_command {	874	$av = eval { (Storable::thaw $av)->{objs} };
99	my ($name, $obj, $params) = @_;
100
101	for my $cmd (@{ $command{$name} }) {
102	$cmd->[1]->($obj, $params);
103	}	875	}
104		876
105	-1	877	warn sprintf "loading %s (%d)\n",
		878	$filename, length $data, scalar @{$av || []};
		879	return ($data, $av);
106	}	880	}
		881
		882	#############################################################################
		883	# command handling &c
		884
		885	=item cf::register_command $name => \&callback($ob,$args);
		886
		887	Register a callback for execution when the client sends the user command
		888	$name.
		889
		890	=cut
107		891
108	sub register_command {	892	sub register_command {
109	my ($name, $time, $cb) = @_;	893	my ($name, $cb) = @_;
110		894
111	my $caller = caller;	895	my $caller = caller;
112	#warn "registering command '$name/$time' to '$caller'";	896	#warn "registering command '$name/$time' to '$caller'";
113		897
114	push @{ $command{$name} }, [$time, $cb, $caller];	898	push @{ $COMMAND{$name} }, [$caller, $cb];
115	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
116	}	899	}
		900
		901	=item cf::register_extcmd $name => \&callback($pl,$packet);
		902
		903	Register a callbackf ro execution when the client sends an extcmd packet.
		904
		905	If the callback returns something, it is sent back as if reply was being
		906	called.
		907
		908	=cut
117		909
118	sub register_extcmd {	910	sub register_extcmd {
119	my ($name, $cb) = @_;	911	my ($name, $cb) = @_;
120		912
121	my $caller = caller;	913	$EXTCMD{$name} = $cb;
122	#warn "registering extcmd '$name' to '$caller'";
123
124	$extcmd{$name} = [$cb, $caller];
125	}	914	}
		915
		916	cf::player->attach (
		917	on_command => sub {
		918	my ($pl, $name, $params) = @_;
		919
		920	my $cb = $COMMAND{$name}
		921	or return;
		922
		923	for my $cmd (@$cb) {
		924	$cmd->[1]->($pl->ob, $params);
		925	}
		926
		927	cf::override;
		928	},
		929	on_extcmd => sub {
		930	my ($pl, $buf) = @_;
		931
		932	my $msg = eval { from_json $buf };
		933
		934	if (ref $msg) {
		935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		936	if (my %reply = $cb->($pl, $msg)) {
		937	$pl->ext_reply ($msg->{msgid}, %reply);
		938	}
		939	}
		940	} else {
		941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		942	}
		943
		944	cf::override;
		945	},
		946	);
		947
		948	sub load_extensions {
		949	cf::sync_job {
		950	my %todo;
		951
		952	for my $path (<$LIBDIR/*.ext>) {
		953	next unless -r $path;
		954
		955	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		956	my $base = $1;
		957	my $pkg = $1;
		958	$pkg =~ s/[^[:word:]]/_/g;
		959	$pkg = "ext::$pkg";
		960
		961	open my $fh, "<:utf8", $path
		962	or die "$path: $!";
		963
		964	my $source = do { local $/; <$fh> };
		965
		966	my %ext = (
		967	path => $path,
		968	base => $base,
		969	pkg => $pkg,
		970	);
		971
		972	$ext{meta} = { map { split /=/, $_, 2 } split /\s+/, $1 }
		973	if $source =~ /^#!.*?perl.*?#\s*(.*)$/;
		974
		975	$ext{source} =
		976	"package $pkg; use strict; use utf8;\n"
		977	. "#line 1 \"$path\"\n{\n"
		978	. $source
		979	. "\n};\n1";
		980
		981	$todo{$base} = \%ext;
		982	}
		983
		984	my %done;
		985	while (%todo) {
		986	my $progress;
		987
		988	while (my ($k, $v) = each %todo) {
		989	for (split /,\s*/, $ext{meta}{depends}) {
		990	goto skip
		991	unless exists $done{$_};
		992	}
		993
		994	warn "... loading '$k' into '$v->{pkg}'\n";
		995
		996	unless (eval $v->{source}) {
		997	my $msg = $@ ? "$v->{path}: $@\n"
		998	: "extension disabled.\n";
		999
		1000	if (exists $v->{meta}{mandatory}) {
		1001	warn $msg;
		1002	warn "mandatory extension failed to load, exiting.\n";
		1003	exit 1;
		1004	}
		1005
		1006	die $msg;
		1007	}
		1008
		1009	$done{$k} = delete $todo{$k};
		1010	push @EXTS, $v->{pkg};
		1011	}
		1012
		1013	skip:
		1014	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1015	unless $progress;
		1016	}
		1017	};
		1018	}
		1019
		1020	#############################################################################
		1021
		1022	=head2 CORE EXTENSIONS
		1023
		1024	Functions and methods that extend core crossfire objects.
		1025
		1026	=cut
		1027
		1028	package cf::player;
		1029
		1030	use Coro::AIO;
		1031
		1032	=head3 cf::player
		1033
		1034	=over 4
		1035
		1036	=item cf::player::find $login
		1037
		1038	Returns the given player object, loading it if necessary (might block).
		1039
		1040	=cut
		1041
		1042	sub playerdir($) {
		1043	"$PLAYERDIR/"
		1044	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1045	}
		1046
		1047	sub path($) {
		1048	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1049
		1050	(playerdir $login) . "/playerdata"
		1051	}
		1052
		1053	sub find_active($) {
		1054	$cf::PLAYER{$_[0]}
		1055	and $cf::PLAYER{$_[0]}->active
		1056	and $cf::PLAYER{$_[0]}
		1057	}
		1058
		1059	sub exists($) {
		1060	my ($login) = @_;
		1061
		1062	$cf::PLAYER{$login}
		1063	or cf::sync_job { !aio_stat path $login }
		1064	}
		1065
		1066	sub find($) {
		1067	return $cf::PLAYER{$_[0]} || do {
		1068	my $login = $_[0];
		1069
		1070	my $guard = cf::lock_acquire "user_find:$login";
		1071
		1072	$cf::PLAYER{$_[0]} || do {
		1073	# rename old playerfiles to new ones
		1074	#TODO: remove when no longer required
		1075	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1076	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1077	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1078	aio_unlink +(playerdir $login) . "/$login.pl";
		1079
		1080	my $pl = load_pl path $login
		1081	or return;
		1082	$cf::PLAYER{$login} = $pl
		1083	}
		1084	}
		1085	}
		1086
		1087	sub save($) {
		1088	my ($pl) = @_;
		1089
		1090	return if $pl->{deny_save};
		1091
		1092	my $path = path $pl;
		1093	my $guard = cf::lock_acquire "user_save:$path";
		1094
		1095	return if $pl->{deny_save};
		1096
		1097	aio_mkdir playerdir $pl, 0770;
		1098	$pl->{last_save} = $cf::RUNTIME;
		1099
		1100	$pl->save_pl ($path);
		1101	Coro::cede;
		1102	}
		1103
		1104	sub new($) {
		1105	my ($login) = @_;
		1106
		1107	my $self = create;
		1108
		1109	$self->ob->name ($login);
		1110	$self->{deny_save} = 1;
		1111
		1112	$cf::PLAYER{$login} = $self;
		1113
		1114	$self
		1115	}
		1116
		1117	=item $pl->quit_character
		1118
		1119	Nukes the player without looking back. If logged in, the connection will
		1120	be destroyed. May block for a long time.
		1121
		1122	=cut
		1123
		1124	sub quit_character {
		1125	my ($pl) = @_;
		1126
		1127	my $name = $pl->ob->name;
		1128
		1129	$pl->{deny_save} = 1;
		1130	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1131
		1132	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1133	$pl->deactivate;
		1134	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1135	$pl->ns->destroy if $pl->ns;
		1136
		1137	my $path = playerdir $pl;
		1138	my $temp = "$path~$cf::RUNTIME~deleting~";
		1139	aio_rename $path, $temp;
		1140	delete $cf::PLAYER{$pl->ob->name};
		1141	$pl->destroy;
		1142
		1143	my $prefix = qr<^~\Q$name\E/>;
		1144
		1145	# nuke player maps
		1146	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1147
		1148	IO::AIO::aio_rmtree $temp;
		1149	}
		1150
		1151	=item $pl->kick
		1152
		1153	Kicks a player out of the game. This destroys the connection.
		1154
		1155	=cut
		1156
		1157	sub kick {
		1158	my ($pl, $kicker) = @_;
		1159
		1160	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1161	$pl->killer ("kicked");
		1162	$pl->ns->destroy;
		1163	}
		1164
		1165	=item cf::player::list_logins
		1166
		1167	Returns am arrayref of all valid playernames in the system, can take a
		1168	while and may block, so not sync_job-capable, ever.
		1169
		1170	=cut
		1171
		1172	sub list_logins {
		1173	my $dirs = aio_readdir $PLAYERDIR
		1174	or return [];
		1175
		1176	my @logins;
		1177
		1178	for my $login (@$dirs) {
		1179	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1180	aio_read $fh, 0, 512, my $buf, 0 or next;
		1181	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1182
		1183	utf8::decode $login;
		1184	push @logins, $login;
		1185	}
		1186
		1187	\@logins
		1188	}
		1189
		1190	=item $player->maps
		1191
		1192	Returns an arrayref of map paths that are private for this
		1193	player. May block.
		1194
		1195	=cut
		1196
		1197	sub maps($) {
		1198	my ($pl) = @_;
		1199
		1200	$pl = ref $pl ? $pl->ob->name : $pl;
		1201
		1202	my $files = aio_readdir playerdir $pl
		1203	or return;
		1204
		1205	my @paths;
		1206
		1207	for (@$files) {
		1208	utf8::decode $_;
		1209	next if /\.(?:pl|pst)$/;
		1210	next unless /^$PATH_SEP/o;
		1211
		1212	push @paths, cf::map::normalise "~$pl/$_";
		1213	}
		1214
		1215	\@paths
		1216	}
		1217
		1218	=item $player->ext_reply ($msgid, %msg)
		1219
		1220	Sends an ext reply to the player.
		1221
		1222	=cut
		1223
		1224	sub ext_reply($$%) {
		1225	my ($self, $id, %msg) = @_;
		1226
		1227	$msg{msgid} = $id;
		1228
		1229	$self->send ("ext " . cf::to_json \%msg);
		1230	}
		1231
		1232	=item $player->ext_event ($type, %msg)
		1233
		1234	Sends an ext event to the client.
		1235
		1236	=cut
		1237
		1238	sub ext_event($$%) {
		1239	my ($self, $type, %msg) = @_;
		1240
		1241	$self->ns->ext_event ($type, %msg);
		1242	}
		1243
		1244	=head3 cf::region
		1245
		1246	=over 4
		1247
		1248	=cut
		1249
		1250	package cf::region;
		1251
		1252	=item cf::region::find_by_path $path
		1253
		1254	Tries to decuce the probable region for a map knowing only its path.
		1255
		1256	=cut
		1257
		1258	sub find_by_path($) {
		1259	my ($path) = @_;
		1260
		1261	my ($match, $specificity);
		1262
		1263	for my $region (list) {
		1264	if ($region->match && $path =~ $region->match) {
		1265	($match, $specificity) = ($region, $region->specificity)
		1266	if $region->specificity > $specificity;
		1267	}
		1268	}
		1269
		1270	$match
		1271	}
		1272
		1273	=back
		1274
		1275	=head3 cf::map
		1276
		1277	=over 4
		1278
		1279	=cut
		1280
		1281	package cf::map;
		1282
		1283	use Fcntl;
		1284	use Coro::AIO;
		1285
		1286	use overload
		1287	'""' => \&as_string,
		1288	fallback => 1;
		1289
		1290	our $MAX_RESET = 3600;
		1291	our $DEFAULT_RESET = 3000;
		1292
		1293	sub generate_random_map {
		1294	my ($self, $rmp) = @_;
		1295	# mit "rum" bekleckern, nicht
		1296	$self->_create_random_map (
		1297	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1298	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1299	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1300	$rmp->{exit_on_final_map},
		1301	$rmp->{xsize}, $rmp->{ysize},
		1302	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1303	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1304	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1305	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1306	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1307	(cf::region::find $rmp->{region}), $rmp->{custom}
		1308	)
		1309	}
		1310
		1311	=item cf::map->register ($regex, $prio)
		1312
		1313	Register a handler for the map path matching the given regex at the
		1314	givne priority (higher is better, built-in handlers have priority 0, the
		1315	default).
		1316
		1317	=cut
126		1318
127	sub register {	1319	sub register {
		1320	my (undef, $regex, $prio) = @_;
		1321	my $pkg = caller;
		1322
		1323	no strict;
		1324	push @{"$pkg\::ISA"}, __PACKAGE__;
		1325
		1326	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1327	}
		1328
		1329	# also paths starting with '/'
		1330	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1331
		1332	sub thawer_merge {
		1333	my ($self, $merge) = @_;
		1334
		1335	# we have to keep some variables in memory intact
		1336	local $self->{path};
		1337	local $self->{load_path};
		1338
		1339	$self->SUPER::thawer_merge ($merge);
		1340	}
		1341
		1342	sub normalise {
		1343	my ($path, $base) = @_;
		1344
		1345	$path = "$path"; # make sure its a string
		1346
		1347	$path =~ s/\.map$//;
		1348
		1349	# map plan:
		1350	#
		1351	# /! non-realised random map exit (special hack!)
		1352	# {... are special paths that are not being touched
		1353	# ?xxx/... are special absolute paths
		1354	# ?random/... random maps
		1355	# /... normal maps
		1356	# ~user/... per-player map of a specific user
		1357
		1358	$path =~ s/$PATH_SEP/\//go;
		1359
		1360	# treat it as relative path if it starts with
		1361	# something that looks reasonable
		1362	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1363	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1364
		1365	$base =~ s{[^/]+/?$}{};
		1366	$path = "$base/$path";
		1367	}
		1368
		1369	for ($path) {
		1370	redo if s{//}{/};
		1371	redo if s{/\.?/}{/};
		1372	redo if s{/[^/]+/\.\./}{/};
		1373	}
		1374
		1375	$path
		1376	}
		1377
		1378	sub new_from_path {
		1379	my (undef, $path, $base) = @_;
		1380
		1381	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1382
		1383	$path = normalise $path, $base;
		1384
		1385	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1386	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1387	my $self = bless cf::map::new, $pkg;
		1388	$self->{path} = $path; $self->path ($path);
		1389	$self->init; # pass $1 etc.
		1390	return $self;
		1391	}
		1392	}
		1393
		1394	Carp::carp "unable to resolve path '$path' (base '$base').";
		1395	()
		1396	}
		1397
		1398	sub init {
		1399	my ($self) = @_;
		1400
		1401	$self
		1402	}
		1403
		1404	sub as_string {
		1405	my ($self) = @_;
		1406
		1407	"$self->{path}"
		1408	}
		1409
		1410	# the displayed name, this is a one way mapping
		1411	sub visible_name {
		1412	&as_string
		1413	}
		1414
		1415	# the original (read-only) location
		1416	sub load_path {
		1417	my ($self) = @_;
		1418
		1419	"$MAPDIR/$self->{path}.map"
		1420	}
		1421
		1422	# the temporary/swap location
		1423	sub save_path {
		1424	my ($self) = @_;
		1425
		1426	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1427	"$TMPDIR/$path.map"
		1428	}
		1429
		1430	# the unique path, undef == no special unique path
		1431	sub uniq_path {
		1432	my ($self) = @_;
		1433
		1434	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1435	"$UNIQUEDIR/$path"
		1436	}
		1437
		1438	# and all this just because we cannot iterate over
		1439	# all maps in C++...
		1440	sub change_all_map_light {
		1441	my ($change) = @_;
		1442
		1443	$_->change_map_light ($change)
		1444	for grep $_->outdoor, values %cf::MAP;
		1445	}
		1446
		1447	sub decay_objects {
		1448	my ($self) = @_;
		1449
		1450	return if $self->{deny_reset};
		1451
		1452	$self->do_decay_objects;
		1453	}
		1454
		1455	sub unlink_save {
		1456	my ($self) = @_;
		1457
		1458	utf8::encode (my $save = $self->save_path);
		1459	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1460	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1461	}
		1462
		1463	sub load_header_from($) {
128	my ($base, $pkg) = @_;	1464	my ($self, $path) = @_;
129		1465
130	for my $idx (0 .. $#EVENT) {	1466	utf8::encode $path;
131	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	1467	#aio_open $path, O_RDONLY, 0
132	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	1468	# or return;
133	$hook[$idx]{$base} = $ref;	1469
		1470	$self->_load_header ($path)
		1471	or return;
		1472
		1473	$self->{load_path} = $path;
		1474
		1475	1
		1476	}
		1477
		1478	sub load_header_orig {
		1479	my ($self) = @_;
		1480
		1481	$self->load_header_from ($self->load_path)
		1482	}
		1483
		1484	sub load_header_temp {
		1485	my ($self) = @_;
		1486
		1487	$self->load_header_from ($self->save_path)
		1488	}
		1489
		1490	sub prepare_temp {
		1491	my ($self) = @_;
		1492
		1493	$self->last_access ((delete $self->{last_access})
		1494	|| $cf::RUNTIME); #d#
		1495	# safety
		1496	$self->{instantiate_time} = $cf::RUNTIME
		1497	if $self->{instantiate_time} > $cf::RUNTIME;
		1498	}
		1499
		1500	sub prepare_orig {
		1501	my ($self) = @_;
		1502
		1503	$self->{load_original} = 1;
		1504	$self->{instantiate_time} = $cf::RUNTIME;
		1505	$self->last_access ($cf::RUNTIME);
		1506	$self->instantiate;
		1507	}
		1508
		1509	sub load_header {
		1510	my ($self) = @_;
		1511
		1512	if ($self->load_header_temp) {
		1513	$self->prepare_temp;
		1514	} else {
		1515	$self->load_header_orig
		1516	or return;
		1517	$self->prepare_orig;
		1518	}
		1519
		1520	$self->{deny_reset} = 1
		1521	if $self->no_reset;
		1522
		1523	$self->default_region (cf::region::find_by_path $self->{path})
		1524	unless $self->default_region;
		1525
		1526	1
		1527	}
		1528
		1529	sub find;
		1530	sub find {
		1531	my ($path, $origin) = @_;
		1532
		1533	$path = normalise $path, $origin && $origin->path;
		1534
		1535	cf::lock_wait "map_find:$path";
		1536
		1537	$cf::MAP{$path} || do {
		1538	my $guard = cf::lock_acquire "map_find:$path";
		1539	my $map = new_from_path cf::map $path
		1540	or return;
		1541
		1542	$map->{last_save} = $cf::RUNTIME;
		1543
		1544	$map->load_header
		1545	or return;
		1546
		1547	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1548	# doing this can freeze the server in a sync job, obviously
		1549	#$cf::WAIT_FOR_TICK->wait;
		1550	$map->reset;
		1551	undef $guard;
		1552	return find $path;
		1553	}
		1554
		1555	$cf::MAP{$path} = $map
		1556	}
		1557	}
		1558
		1559	sub pre_load { }
		1560	sub post_load { }
		1561
		1562	sub load {
		1563	my ($self) = @_;
		1564
		1565	local $self->{deny_reset} = 1; # loading can take a long time
		1566
		1567	my $path = $self->{path};
		1568
		1569	{
		1570	my $guard = cf::lock_acquire "map_load:$path";
		1571
		1572	return if $self->in_memory != cf::MAP_SWAPPED;
		1573
		1574	$self->in_memory (cf::MAP_LOADING);
		1575
		1576	$self->alloc;
		1577
		1578	$self->pre_load;
		1579	Coro::cede;
		1580
		1581	$self->_load_objects ($self->{load_path}, 1)
		1582	or return;
		1583
		1584	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1585	if delete $self->{load_original};
		1586
		1587	if (my $uniq = $self->uniq_path) {
		1588	utf8::encode $uniq;
		1589	if (aio_open $uniq, O_RDONLY, 0) {
		1590	$self->clear_unique_items;
		1591	$self->_load_objects ($uniq, 0);
		1592	}
		1593	}
		1594
		1595	Coro::cede;
		1596	# now do the right thing for maps
		1597	$self->link_multipart_objects;
		1598	$self->difficulty ($self->estimate_difficulty)
		1599	unless $self->difficulty;
		1600	Coro::cede;
		1601
		1602	unless ($self->{deny_activate}) {
		1603	$self->decay_objects;
		1604	$self->fix_auto_apply;
		1605	$self->update_buttons;
		1606	Coro::cede;
		1607	$self->set_darkness_map;
		1608	Coro::cede;
		1609	$self->activate;
		1610	}
		1611
		1612	$self->in_memory (cf::MAP_IN_MEMORY);
		1613	}
		1614
		1615	$self->post_load;
		1616	}
		1617
		1618	sub customise_for {
		1619	my ($self, $ob) = @_;
		1620
		1621	return find "~" . $ob->name . "/" . $self->{path}
		1622	if $self->per_player;
		1623
		1624	# return find "?party/" . $ob->name . "/" . $self->{path}
		1625	# if $self->per_party;
		1626
		1627	$self
		1628	}
		1629
		1630	# find and load all maps in the 3x3 area around a map
		1631	sub load_diag {
		1632	my ($map) = @_;
		1633
		1634	my @diag; # diagonal neighbours
		1635
		1636	for (0 .. 3) {
		1637	my $neigh = $map->tile_path ($_)
		1638	or next;
		1639	$neigh = find $neigh, $map
		1640	or next;
		1641	$neigh->load;
		1642
		1643	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1644	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1645	}
		1646
		1647	for (@diag) {
		1648	my $neigh = find @$_
		1649	or next;
		1650	$neigh->load;
		1651	}
		1652	}
		1653
		1654	sub find_sync {
		1655	my ($path, $origin) = @_;
		1656
		1657	cf::sync_job { find $path, $origin }
		1658	}
		1659
		1660	sub do_load_sync {
		1661	my ($map) = @_;
		1662
		1663	cf::sync_job { $map->load };
		1664	}
		1665
		1666	our %MAP_PREFETCH;
		1667	our $MAP_PREFETCHER = undef;
		1668
		1669	sub find_async {
		1670	my ($path, $origin) = @_;
		1671
		1672	$path = normalise $path, $origin && $origin->{path};
		1673
		1674	if (my $map = $cf::MAP{$path}) {
		1675	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1676	}
		1677
		1678	undef $MAP_PREFETCH{$path};
		1679	$MAP_PREFETCHER ||= cf::async {
		1680	while (%MAP_PREFETCH) {
		1681	for my $path (keys %MAP_PREFETCH) {
		1682	my $map = find $path
		1683	or next;
		1684	$map->load;
		1685
		1686	delete $MAP_PREFETCH{$path};
		1687	}
		1688	}
		1689	undef $MAP_PREFETCHER;
		1690	};
		1691	$MAP_PREFETCHER->prio (6);
		1692
		1693	()
		1694	}
		1695
		1696	sub save {
		1697	my ($self) = @_;
		1698
		1699	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1700
		1701	$self->{last_save} = $cf::RUNTIME;
		1702
		1703	return unless $self->dirty;
		1704
		1705	my $save = $self->save_path; utf8::encode $save;
		1706	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1707
		1708	$self->{load_path} = $save;
		1709
		1710	return if $self->{deny_save};
		1711
		1712	local $self->{last_access} = $self->last_access;#d#
		1713
		1714	cf::async {
		1715	$_->contr->save for $self->players;
		1716	};
		1717
		1718	if ($uniq) {
		1719	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1720	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1721	} else {
		1722	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1723	}
		1724	}
		1725
		1726	sub swap_out {
		1727	my ($self) = @_;
		1728
		1729	# save first because save cedes
		1730	$self->save;
		1731
		1732	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1733
		1734	return if $self->players;
		1735	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1736	return if $self->{deny_save};
		1737
		1738	$self->clear;
		1739	$self->in_memory (cf::MAP_SWAPPED);
		1740	}
		1741
		1742	sub reset_at {
		1743	my ($self) = @_;
		1744
		1745	# TODO: safety, remove and allow resettable per-player maps
		1746	return 1e99 if $self->{deny_reset};
		1747
		1748	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1749	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1750
		1751	$time + $to
		1752	}
		1753
		1754	sub should_reset {
		1755	my ($self) = @_;
		1756
		1757	$self->reset_at <= $cf::RUNTIME
		1758	}
		1759
		1760	sub reset {
		1761	my ($self) = @_;
		1762
		1763	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1764
		1765	return if $self->players;
		1766
		1767	warn "resetting map ", $self->path;
		1768
		1769	$self->in_memory (cf::MAP_SWAPPED);
		1770
		1771	# need to save uniques path
		1772	unless ($self->{deny_save}) {
		1773	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1774
		1775	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1776	if $uniq;
		1777	}
		1778
		1779	delete $cf::MAP{$self->path};
		1780
		1781	$self->clear;
		1782
		1783	$_->clear_links_to ($self) for values %cf::MAP;
		1784
		1785	$self->unlink_save;
		1786	$self->destroy;
		1787	}
		1788
		1789	my $nuke_counter = "aaaa";
		1790
		1791	sub nuke {
		1792	my ($self) = @_;
		1793
		1794	delete $cf::MAP{$self->path};
		1795
		1796	$self->unlink_save;
		1797
		1798	bless $self, "cf::map";
		1799	delete $self->{deny_reset};
		1800	$self->{deny_save} = 1;
		1801	$self->reset_timeout (1);
		1802	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1803
		1804	$cf::MAP{$self->path} = $self;
		1805
		1806	$self->reset; # polite request, might not happen
		1807	}
		1808
		1809	=item $maps = cf::map::tmp_maps
		1810
		1811	Returns an arrayref with all map paths of currently instantiated and saved
		1812	maps. May block.
		1813
		1814	=cut
		1815
		1816	sub tmp_maps() {
		1817	[
		1818	map {
		1819	utf8::decode $_;
		1820	/\.map$/
		1821	? normalise $_
		1822	: ()
		1823	} @{ aio_readdir $TMPDIR or [] }
		1824	]
		1825	}
		1826
		1827	=item $maps = cf::map::random_maps
		1828
		1829	Returns an arrayref with all map paths of currently instantiated and saved
		1830	random maps. May block.
		1831
		1832	=cut
		1833
		1834	sub random_maps() {
		1835	[
		1836	map {
		1837	utf8::decode $_;
		1838	/\.map$/
		1839	? normalise "?random/$_"
		1840	: ()
		1841	} @{ aio_readdir $RANDOMDIR or [] }
		1842	]
		1843	}
		1844
		1845	=item cf::map::unique_maps
		1846
		1847	Returns an arrayref of paths of all shared maps that have
		1848	instantiated unique items. May block.
		1849
		1850	=cut
		1851
		1852	sub unique_maps() {
		1853	[
		1854	map {
		1855	utf8::decode $_;
		1856	/\.map$/
		1857	? normalise $_
		1858	: ()
		1859	} @{ aio_readdir $UNIQUEDIR or [] }
		1860	]
		1861	}
		1862
		1863	package cf;
		1864
		1865	=back
		1866
		1867	=head3 cf::object
		1868
		1869	=cut
		1870
		1871	package cf::object;
		1872
		1873	=over 4
		1874
		1875	=item $ob->inv_recursive
		1876
		1877	Returns the inventory of the object _and_ their inventories, recursively.
		1878
		1879	=cut
		1880
		1881	sub inv_recursive_;
		1882	sub inv_recursive_ {
		1883	map { $_, inv_recursive_ $_->inv } @_
		1884	}
		1885
		1886	sub inv_recursive {
		1887	inv_recursive_ inv $_[0]
		1888	}
		1889
		1890	package cf;
		1891
		1892	=back
		1893
		1894	=head3 cf::object::player
		1895
		1896	=over 4
		1897
		1898	=item $player_object->reply ($npc, $msg[, $flags])
		1899
		1900	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1901	can be C<undef>. Does the right thing when the player is currently in a
		1902	dialogue with the given NPC character.
		1903
		1904	=cut
		1905
		1906	# rough implementation of a future "reply" method that works
		1907	# with dialog boxes.
		1908	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1909	sub cf::object::player::reply($$$;$) {
		1910	my ($self, $npc, $msg, $flags) = @_;
		1911
		1912	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1913
		1914	if ($self->{record_replies}) {
		1915	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1916	} else {
		1917	$msg = $npc->name . " says: $msg" if $npc;
		1918	$self->message ($msg, $flags);
		1919	}
		1920	}
		1921
		1922	=item $player_object->may ("access")
		1923
		1924	Returns wether the given player is authorized to access resource "access"
		1925	(e.g. "command_wizcast").
		1926
		1927	=cut
		1928
		1929	sub cf::object::player::may {
		1930	my ($self, $access) = @_;
		1931
		1932	$self->flag (cf::FLAG_WIZ) ||
		1933	(ref $cf::CFG{"may_$access"}
		1934	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1935	: $cf::CFG{"may_$access"})
		1936	}
		1937
		1938	=item $player_object->enter_link
		1939
		1940	Freezes the player and moves him/her to a special map (C<{link}>).
		1941
		1942	The player should be reasonably safe there for short amounts of time. You
		1943	I<MUST> call C<leave_link> as soon as possible, though.
		1944
		1945	Will never block.
		1946
		1947	=item $player_object->leave_link ($map, $x, $y)
		1948
		1949	Moves the player out of the special C<{link}> map onto the specified
		1950	map. If the map is not valid (or omitted), the player will be moved back
		1951	to the location he/she was before the call to C<enter_link>, or, if that
		1952	fails, to the emergency map position.
		1953
		1954	Might block.
		1955
		1956	=cut
		1957
		1958	sub link_map {
		1959	unless ($LINK_MAP) {
		1960	$LINK_MAP = cf::map::find "{link}"
		1961	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1962	$LINK_MAP->load;
		1963	}
		1964
		1965	$LINK_MAP
		1966	}
		1967
		1968	sub cf::object::player::enter_link {
		1969	my ($self) = @_;
		1970
		1971	$self->deactivate_recursive;
		1972
		1973	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1974
		1975	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1976	if $self->map && $self->map->{path} ne "{link}";
		1977
		1978	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1979	}
		1980
		1981	sub cf::object::player::leave_link {
		1982	my ($self, $map, $x, $y) = @_;
		1983
		1984	return unless $self->contr->active;
		1985
		1986	my $link_pos = delete $self->{_link_pos};
		1987
		1988	unless ($map) {
		1989	# restore original map position
		1990	($map, $x, $y) = @{ $link_pos || [] };
		1991	$map = cf::map::find $map;
		1992
		1993	unless ($map) {
		1994	($map, $x, $y) = @$EMERGENCY_POSITION;
		1995	$map = cf::map::find $map
		1996	or die "FATAL: cannot load emergency map\n";
		1997	}
		1998	}
		1999
		2000	($x, $y) = (-1, -1)
		2001	unless (defined $x) && (defined $y);
		2002
		2003	# use -1 or undef as default coordinates, not 0, 0
		2004	($x, $y) = ($map->enter_x, $map->enter_y)
		2005	if $x <=0 && $y <= 0;
		2006
		2007	$map->load;
		2008	$map->load_diag;
		2009
		2010	return unless $self->contr->active;
		2011	$self->activate_recursive;
		2012
		2013	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2014	$self->enter_map ($map, $x, $y);
		2015	}
		2016
		2017	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2018
		2019	Moves the player to the given map-path and coordinates by first freezing
		2020	her, loading and preparing them map, calling the provided $check callback
		2021	that has to return the map if sucecssful, and then unfreezes the player on
		2022	the new (success) or old (failed) map position.
		2023
		2024	=cut
		2025
		2026	our $GOTOGEN;
		2027
		2028	sub cf::object::player::goto {
		2029	my ($self, $path, $x, $y, $check) = @_;
		2030
		2031	# do generation counting so two concurrent goto's will be executed in-order
		2032	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2033
		2034	$self->enter_link;
		2035
		2036	(async {
		2037	my $map = eval {
		2038	my $map = cf::map::find $path;
		2039
		2040	if ($map) {
		2041	$map = $map->customise_for ($self);
		2042	$map = $check->($map) if $check && $map;
		2043	} else {
		2044	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2045	}
		2046
		2047	$map
134	}	2048	};
		2049
		2050	if ($@) {
		2051	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2052	LOG llevError | logBacktrace, Carp::longmess $@;
		2053	}
		2054
		2055	if ($gen == $self->{_goto_generation}) {
		2056	delete $self->{_goto_generation};
		2057	$self->leave_link ($map, $x, $y);
		2058	}
		2059	})->prio (1);
		2060	}
		2061
		2062	=item $player_object->enter_exit ($exit_object)
		2063
		2064	=cut
		2065
		2066	sub parse_random_map_params {
		2067	my ($spec) = @_;
		2068
		2069	my $rmp = { # defaults
		2070	xsize => (cf::rndm 15, 40),
		2071	ysize => (cf::rndm 15, 40),
		2072	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2073	#layout => string,
135	}	2074	};
136	}
137		2075
138	sub load_extension {	2076	for (split /\n/, $spec) {
		2077	my ($k, $v) = split /\s+/, $_, 2;
		2078
		2079	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2080	}
		2081
		2082	$rmp
		2083	}
		2084
		2085	sub prepare_random_map {
		2086	my ($exit) = @_;
		2087
		2088	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2089
		2090	# all this does is basically replace the /! path by
		2091	# a new random map path (?random/...) with a seed
		2092	# that depends on the exit object
		2093
		2094	my $rmp = parse_random_map_params $exit->msg;
		2095
		2096	if ($exit->map) {
		2097	$rmp->{region} = $exit->region->name;
		2098	$rmp->{origin_map} = $exit->map->path;
		2099	$rmp->{origin_x} = $exit->x;
		2100	$rmp->{origin_y} = $exit->y;
		2101	}
		2102
		2103	$rmp->{random_seed} ||= $exit->random_seed;
		2104
		2105	my $data = cf::to_json $rmp;
		2106	my $md5 = Digest::MD5::md5_hex $data;
		2107	my $meta = "$RANDOMDIR/$md5.meta";
		2108
		2109	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2110	aio_write $fh, 0, (length $data), $data, 0;
		2111	undef $fh;
		2112	aio_rename "$meta~", $meta;
		2113
		2114	$exit->slaying ("?random/$md5");
		2115	$exit->msg (undef);
		2116	}
		2117	}
		2118
		2119	sub cf::object::player::enter_exit {
		2120	my ($self, $exit) = @_;
		2121
		2122	return unless $self->type == cf::PLAYER;
		2123
		2124	if ($exit->slaying eq "/!") {
		2125	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2126	# the problem is that $exit might not survive long enough
		2127	# so it needs to be done right now, right here
		2128	cf::sync_job { prepare_random_map $exit };
		2129	}
		2130
		2131	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2132	my $hp = $exit->stats->hp;
		2133	my $sp = $exit->stats->sp;
		2134
		2135	$self->enter_link;
		2136
		2137	(async {
		2138	$self->deactivate_recursive; # just to be sure
		2139	unless (eval {
		2140	$self->goto ($slaying, $hp, $sp);
		2141
		2142	1;
		2143	}) {
		2144	$self->message ("Something went wrong deep within the crossfire server. "
		2145	. "I'll try to bring you back to the map you were before. "
		2146	. "Please report this to the dungeon master!",
		2147	cf::NDI_UNIQUE | cf::NDI_RED);
		2148
		2149	warn "ERROR in enter_exit: $@";
		2150	$self->leave_link;
		2151	}
		2152	})->prio (1);
		2153	}
		2154
		2155	=head3 cf::client
		2156
		2157	=over 4
		2158
		2159	=item $client->send_drawinfo ($text, $flags)
		2160
		2161	Sends a drawinfo packet to the client. Circumvents output buffering so
		2162	should not be used under normal circumstances.
		2163
		2164	=cut
		2165
		2166	sub cf::client::send_drawinfo {
		2167	my ($self, $text, $flags) = @_;
		2168
		2169	utf8::encode $text;
		2170	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2171	}
		2172
		2173	=item $client->ext_event ($type, %msg)
		2174
		2175	Sends an exti event to the client.
		2176
		2177	=cut
		2178
		2179	sub cf::client::ext_event($$%) {
		2180	my ($self, $type, %msg) = @_;
		2181
		2182	$msg{msgtype} = "event_$type";
		2183	$self->send_packet ("ext " . cf::to_json \%msg);
		2184	}
		2185
		2186	=item $success = $client->query ($flags, "text", \&cb)
		2187
		2188	Queues a query to the client, calling the given callback with
		2189	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2190	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2191
		2192	Queries can fail, so check the return code. Or don't, as queries will become
		2193	reliable at some point in the future.
		2194
		2195	=cut
		2196
		2197	sub cf::client::query {
		2198	my ($self, $flags, $text, $cb) = @_;
		2199
		2200	return unless $self->state == ST_PLAYING
		2201	|| $self->state == ST_SETUP
		2202	|| $self->state == ST_CUSTOM;
		2203
		2204	$self->state (ST_CUSTOM);
		2205
		2206	utf8::encode $text;
		2207	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2208
		2209	$self->send_packet ($self->{query_queue}[0][0])
		2210	if @{ $self->{query_queue} } == 1;
		2211	}
		2212
		2213	cf::client->attach (
		2214	on_reply => sub {
		2215	my ($ns, $msg) = @_;
		2216
		2217	# this weird shuffling is so that direct followup queries
		2218	# get handled first
		2219	my $queue = delete $ns->{query_queue}
		2220	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2221
		2222	(shift @$queue)->[1]->($msg);
		2223	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2224
		2225	push @{ $ns->{query_queue} }, @$queue;
		2226
		2227	if (@{ $ns->{query_queue} } == @$queue) {
		2228	if (@$queue) {
		2229	$ns->send_packet ($ns->{query_queue}[0][0]);
		2230	} else {
		2231	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2232	}
		2233	}
		2234	},
		2235	);
		2236
		2237	=item $client->async (\&cb)
		2238
		2239	Create a new coroutine, running the specified callback. The coroutine will
		2240	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2241	or loss of connection).
		2242
		2243	=cut
		2244
		2245	sub cf::client::async {
		2246	my ($self, $cb) = @_;
		2247
		2248	my $coro = &Coro::async ($cb);
		2249
		2250	$coro->on_destroy (sub {
		2251	delete $self->{_coro}{$coro+0};
		2252	});
		2253
		2254	$self->{_coro}{$coro+0} = $coro;
		2255
		2256	$coro
		2257	}
		2258
		2259	cf::client->attach (
		2260	on_destroy => sub {
		2261	my ($ns) = @_;
		2262
		2263	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2264	},
		2265	);
		2266
		2267	=back
		2268
		2269
		2270	=head2 SAFE SCRIPTING
		2271
		2272	Functions that provide a safe environment to compile and execute
		2273	snippets of perl code without them endangering the safety of the server
		2274	itself. Looping constructs, I/O operators and other built-in functionality
		2275	is not available in the safe scripting environment, and the number of
		2276	functions and methods that can be called is greatly reduced.
		2277
		2278	=cut
		2279
		2280	our $safe = new Safe "safe";
		2281	our $safe_hole = new Safe::Hole;
		2282
		2283	$SIG{FPE} = 'IGNORE';
		2284
		2285	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		2286
		2287	# here we export the classes and methods available to script code
		2288
		2289	=pod
		2290
		2291	The following functions and methods are available within a safe environment:
		2292
		2293	cf::object contr pay_amount pay_player map
		2294	cf::object::player player
		2295	cf::player peaceful
		2296	cf::map trigger
		2297
		2298	=cut
		2299
		2300	for (
		2301	["cf::object" => qw(contr pay_amount pay_player map)],
		2302	["cf::object::player" => qw(player)],
		2303	["cf::player" => qw(peaceful)],
		2304	["cf::map" => qw(trigger)],
		2305	) {
		2306	no strict 'refs';
		2307	my ($pkg, @funs) = @$_;
		2308	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		2309	for @funs;
		2310	}
		2311
		2312	=over 4
		2313
		2314	=item @retval = safe_eval $code, [var => value, ...]
		2315
		2316	Compiled and executes the given perl code snippet. additional var/value
		2317	pairs result in temporary local (my) scalar variables of the given name
		2318	that are available in the code snippet. Example:
		2319
		2320	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2321
		2322	=cut
		2323
		2324	sub safe_eval($;@) {
		2325	my ($code, %vars) = @_;
		2326
		2327	my $qcode = $code;
		2328	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		2329	$qcode =~ s/\n/\\n/g;
		2330
		2331	local $_;
		2332	local @safe::cf::_safe_eval_args = values %vars;
		2333
		2334	my $eval =
		2335	"do {\n"
		2336	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		2337	. "#line 0 \"{$qcode}\"\n"
		2338	. $code
		2339	. "\n}"
		2340	;
		2341
		2342	sub_generation_inc;
		2343	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		2344	sub_generation_inc;
		2345
		2346	if ($@) {
		2347	warn "$@";
		2348	warn "while executing safe code '$code'\n";
		2349	warn "with arguments " . (join " ", %vars) . "\n";
		2350	}
		2351
		2352	wantarray ? @res : $res[0]
		2353	}
		2354
		2355	=item cf::register_script_function $function => $cb
		2356
		2357	Register a function that can be called from within map/npc scripts. The
		2358	function should be reasonably secure and should be put into a package name
		2359	like the extension.
		2360
		2361	Example: register a function that gets called whenever a map script calls
		2362	C<rent::overview>, as used by the C<rent> extension.
		2363
		2364	cf::register_script_function "rent::overview" => sub {
		2365	...
		2366	};
		2367
		2368	=cut
		2369
		2370	sub register_script_function {
		2371	my ($fun, $cb) = @_;
		2372
		2373	no strict 'refs';
		2374	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		2375	}
		2376
		2377	=back
		2378
		2379	=cut
		2380
		2381	#############################################################################
		2382
		2383	=head2 EXTENSION DATABASE SUPPORT
		2384
		2385	Crossfire maintains a very simple database for extension use. It can
		2386	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2387	convert to/from binary).
		2388
		2389	The parameter C<$family> should best start with the name of the extension
		2390	using it, it should be unique.
		2391
		2392	=over 4
		2393
		2394	=item $value = cf::db_get $family => $key
		2395
		2396	Returns a single value from the database.
		2397
		2398	=item cf::db_put $family => $key => $value
		2399
		2400	Stores the given C<$value> in the family.
		2401
		2402	=cut
		2403
		2404	our $DB;
		2405
		2406	sub db_init {
		2407	unless ($DB) {
		2408	$DB = BDB::db_create $DB_ENV;
		2409
		2410	cf::sync_job {
		2411	eval {
		2412	$DB->set_flags (BDB::CHKSUM);
		2413
		2414	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2415	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2416	cf::cleanup "db_open(db): $!" if $!;
		2417	};
		2418	cf::cleanup "db_open(db): $@" if $@;
		2419	};
		2420	}
		2421	}
		2422
		2423	sub db_get($$) {
		2424	my $key = "$_[0]/$_[1]";
		2425
		2426	cf::sync_job {
		2427	BDB::db_get $DB, undef, $key, my $data;
		2428
		2429	$! ? ()
		2430	: $data
		2431	}
		2432	}
		2433
		2434	sub db_put($$$) {
		2435	BDB::dbreq_pri 4;
		2436	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2437	}
		2438
		2439	=item cf::cache $id => [$paths...], $processversion => $process
		2440
		2441	Generic caching function that returns the value of the resource $id,
		2442	caching and regenerating as required.
		2443
		2444	This function can block.
		2445
		2446	=cut
		2447
		2448	sub cache {
		2449	my ($id, $src, $processversion, $process) = @_;
		2450
		2451	my $meta =
		2452	join "\x00",
		2453	$processversion,
		2454	map {
		2455	aio_stat $_
		2456	and Carp::croak "$_: $!";
		2457
		2458	($_, (stat _)[7,9])
		2459	} @$src;
		2460
		2461	my $dbmeta = db_get cache => "$id/meta";
		2462	if ($dbmeta ne $meta) {
		2463	# changed, we may need to process
		2464
		2465	my @data;
		2466	my $md5;
		2467
		2468	for (0 .. $#$src) {
		2469	0 <= aio_load $src->[$_], $data[$_]
		2470	or Carp::croak "$src->[$_]: $!";
		2471	}
		2472
		2473	# if processing is expensive, check
		2474	# checksum first
		2475	if (1) {
		2476	$md5 =
		2477	join "\x00",
		2478	$processversion,
		2479	map {
		2480	Coro::cede;
		2481	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2482	} 0.. $#$src;
		2483
		2484
		2485	my $dbmd5 = db_get cache => "$id/md5";
		2486	if ($dbmd5 eq $md5) {
		2487	db_put cache => "$id/meta", $meta;
		2488
		2489	return db_get cache => "$id/data";
		2490	}
		2491	}
		2492
		2493	my $t1 = Time::HiRes::time;
		2494	my $data = $process->(\@data);
		2495	my $t2 = Time::HiRes::time;
		2496
		2497	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2498
		2499	db_put cache => "$id/data", $data;
		2500	db_put cache => "$id/md5" , $md5;
		2501	db_put cache => "$id/meta", $meta;
		2502
		2503	return $data;
		2504	}
		2505
		2506	db_get cache => "$id/data"
		2507	}
		2508
		2509	=item fork_call { }, $args
		2510
		2511	Executes the given code block with the given arguments in a seperate
		2512	process, returning the results. Everything must be serialisable with
		2513	Coro::Storable. May, of course, block. Note that the executed sub may
		2514	never block itself or use any form of Event handling.
		2515
		2516	=cut
		2517
		2518	sub fork_call(&@) {
		2519	my ($cb, @args) = @_;
		2520
		2521	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2522	# or die "socketpair: $!";
		2523	pipe my $fh1, my $fh2
		2524	or die "pipe: $!";
		2525
		2526	if (my $pid = fork) {
		2527	close $fh2;
		2528
		2529	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2530	$res = Coro::Storable::thaw $res;
		2531
		2532	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2533
		2534	die $$res unless "ARRAY" eq ref $res;
		2535
		2536	return wantarray ? @$res : $res->[-1];
		2537	} else {
		2538	reset_signals;
		2539	local $SIG{__WARN__};
		2540	local $SIG{__DIE__};
		2541	eval {
		2542	close $fh1;
		2543
		2544	my @res = eval { $cb->(@args) };
		2545	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2546	};
		2547
		2548	warn $@ if $@;
		2549	_exit 0;
		2550	}
		2551	}
		2552
		2553	#############################################################################
		2554	# the server's init and main functions
		2555
		2556	sub load_facedata($) {
139	my ($path) = @_;	2557	my ($path) = @_;
140		2558
141	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	2559	warn "loading facedata from $path\n";
142	my $base = $1;
143	my $pkg = $1;
144	$pkg =~ s/[^[:word:]]/_/g;
145	$pkg = "cf::ext::$pkg";
146		2560
147	warn "loading '$path' into '$pkg'\n";	2561	my $facedata;
148		2562	0 < aio_load $path, $facedata
149	open my $fh, "<:utf8", $path
150	or die "$path: $!";	2563	or die "$path: $!";
151		2564
152	my $source =	2565	$facedata = Coro::Storable::thaw $facedata;
153	"package $pkg; use strict; use utf8;\n"
154	. "#line 1 \"$path\"\n{\n"
155	. (do { local $/; <$fh> })
156	. "\n};\n1";
157		2566
158	eval $source	2567	$facedata->{version} == 2
159	or die "$path: $@";	2568	or cf::cleanup "$path: version mismatch, cannot proceed.";
160		2569
161	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	}	2570	{
		2571	my $faces = $facedata->{faceinfo};
179		2572
180	# remove commands	2573	while (my ($face, $info) = each %$faces) {
181	for my $name (keys %command) {	2574	my $idx = (cf::face::find $face) || cf::face::alloc $face;
182	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	2575	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2576	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2577	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2578	Coro::cede;
		2579	}
183		2580
184	if (@cb) {	2581	while (my ($face, $info) = each %$faces) {
185	$command{$name} = \@cb;	2582	next unless $info->{smooth};
186	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;	2583	my $idx = cf::face::find $face
		2584	or next;
		2585	if (my $smooth = cf::face::find $info->{smooth}) {
		2586	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
187	} else {	2587	} else {
188	delete $command{$name};	2588	warn "smooth face '$info->{smooth}' not found for face '$face'";
189	delete $COMMAND{"$name\000"};
190	}	2589	}
		2590	Coro::cede;
		2591	}
		2592	}
		2593
191	}	2594	{
		2595	my $anims = $facedata->{animinfo};
192		2596
193	# remove extcmds	2597	while (my ($anim, $info) = each %$anims) {
194	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	2598	cf::anim::set $anim, $info->{frames}, $info->{facings};
195	delete $extcmd{$name};	2599	Coro::cede;
		2600	}
		2601
		2602	cf::anim::invalidate_all; # d'oh
		2603	}
		2604
196	}	2605	1
197
198	Symbol::delete_package $pkg;
199	}	2606	}
200		2607
201	sub load_extensions {	2608	sub reload_regions {
202	my $LIBDIR = maps_directory "perl";	2609	load_resource_file "$MAPDIR/regions"
		2610	or die "unable to load regions file\n";
		2611	}
203		2612
204	for my $ext (<$LIBDIR/*.ext>) {	2613	sub reload_facedata {
205	next unless -r $ext;	2614	load_facedata "$DATADIR/facedata"
		2615	or die "unable to load facedata\n";
		2616	}
		2617
		2618	sub reload_archetypes {
		2619	load_resource_file "$DATADIR/archetypes"
		2620	or die "unable to load archetypes\n";
		2621	}
		2622
		2623	sub reload_treasures {
		2624	load_resource_file "$DATADIR/treasures"
		2625	or die "unable to load treasurelists\n";
		2626	}
		2627
		2628	sub reload_resources {
		2629	warn "reloading resource files...\n";
		2630
		2631	reload_regions;
		2632	reload_facedata;
		2633	#reload_archetypes;#d#
		2634	reload_archetypes;
		2635	reload_treasures;
		2636
		2637	warn "finished reloading resource files\n";
		2638	}
		2639
		2640	sub init {
		2641	reload_resources;
		2642	}
		2643
		2644	sub cfg_load {
		2645	open my $fh, "<:utf8", "$CONFDIR/config"
		2646	or return;
		2647
		2648	local $/;
		2649	*CFG = YAML::Syck::Load <$fh>;
		2650
		2651	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2652
		2653	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2654	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2655
		2656	if (exists $CFG{mlockall}) {
206	eval {	2657	eval {
207	load_extension $ext;	2658	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
208	1	2659	and die "WARNING: m(un)lockall failed: $!\n";
209	} or warn "$ext not loaded: $@";
210	}
211	}
212
213	register_command "perl-reload", 0, sub {
214	my ($who, $arg) = @_;
215
216	if ($who->flag (FLAG_WIZ)) {
217	$who->message ("reloading...");
218
219	warn "reloading...\n";
220	eval {
221	unload_extension $_ for @exts;
222	delete $INC{"cf.pm"};
223
224	# don't, removes xs symbols, too
225	#Symbol::delete_package $pkg;
226
227	require cf;
228	};	2660	};
229	warn $@ if $@;	2661	warn $@ if $@;
230	$who->message ($@) if $@;	2662	}
		2663	}
		2664
		2665	sub main {
		2666	# we must not ever block the main coroutine
		2667	local $Coro::idle = sub {
		2668	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2669	(async {
		2670	Event::one_event;
		2671	})->prio (Coro::PRIO_MAX);
		2672	};
		2673
		2674	cfg_load;
		2675	db_init;
		2676	load_extensions;
		2677
		2678	$TICK_WATCHER->start;
		2679	Event::loop;
		2680	}
		2681
		2682	#############################################################################
		2683	# initialisation and cleanup
		2684
		2685	# install some emergency cleanup handlers
		2686	BEGIN {
		2687	for my $signal (qw(INT HUP TERM)) {
		2688	Event->signal (
		2689	reentrant => 0,
		2690	data => WF_AUTOCANCEL,
		2691	signal => $signal,
		2692	prio => 0,
		2693	cb => sub {
		2694	cf::cleanup "SIG$signal";
		2695	},
		2696	);
		2697	}
		2698	}
		2699
		2700	sub emergency_save() {
		2701	my $freeze_guard = cf::freeze_mainloop;
		2702
		2703	warn "enter emergency perl save\n";
		2704
		2705	cf::sync_job {
		2706	# use a peculiar iteration method to avoid tripping on perl
		2707	# refcount bugs in for. also avoids problems with players
		2708	# and maps saved/destroyed asynchronously.
		2709	warn "begin emergency player save\n";
		2710	for my $login (keys %cf::PLAYER) {
		2711	my $pl = $cf::PLAYER{$login} or next;
		2712	$pl->valid or next;
		2713	$pl->save;
		2714	}
		2715	warn "end emergency player save\n";
		2716
		2717	warn "begin emergency map save\n";
		2718	for my $path (keys %cf::MAP) {
		2719	my $map = $cf::MAP{$path} or next;
		2720	$map->valid or next;
		2721	$map->save;
		2722	}
		2723	warn "end emergency map save\n";
		2724
		2725	warn "begin emergency database checkpoint\n";
		2726	BDB::db_env_txn_checkpoint $DB_ENV;
		2727	warn "end emergency database checkpoint\n";
		2728	};
		2729
		2730	warn "leave emergency perl save\n";
		2731	}
		2732
		2733	sub post_cleanup {
		2734	my ($make_core) = @_;
		2735
		2736	warn Carp::longmess "post_cleanup backtrace"
		2737	if $make_core;
		2738	}
		2739
		2740	sub do_reload_perl() {
		2741	# can/must only be called in main
		2742	if ($Coro::current != $Coro::main) {
		2743	warn "can only reload from main coroutine";
		2744	return;
		2745	}
		2746
		2747	warn "reloading...";
		2748
		2749	warn "entering sync_job";
		2750
		2751	cf::sync_job {
		2752	cf::write_runtime; # external watchdog should not bark
		2753	cf::emergency_save;
		2754	cf::write_runtime; # external watchdog should not bark
		2755
		2756	warn "syncing database to disk";
		2757	BDB::db_env_txn_checkpoint $DB_ENV;
		2758
		2759	# if anything goes wrong in here, we should simply crash as we already saved
		2760
		2761	warn "cancelling all WF_AUTOCANCEL watchers";
		2762	for (Event::all_watchers) {
		2763	$_->cancel if $_->data & WF_AUTOCANCEL;
		2764	}
		2765
		2766	warn "flushing outstanding aio requests";
		2767	for (;;) {
		2768	BDB::flush;
		2769	IO::AIO::flush;
		2770	Coro::cede;
		2771	last unless IO::AIO::nreqs || BDB::nreqs;
		2772	warn "iterate...";
		2773	}
		2774
		2775	++$RELOAD;
		2776
		2777	warn "cancelling all extension coros";
		2778	$_->cancel for values %EXT_CORO;
		2779	%EXT_CORO = ();
		2780
		2781	warn "removing commands";
		2782	%COMMAND = ();
		2783
		2784	warn "removing ext commands";
		2785	%EXTCMD = ();
		2786
		2787	warn "unloading/nuking all extensions";
		2788	for my $pkg (@EXTS) {
		2789	warn "... unloading $pkg";
		2790
		2791	if (my $cb = $pkg->can ("unload")) {
		2792	eval {
		2793	$cb->($pkg);
		2794	1
		2795	} or warn "$pkg unloaded, but with errors: $@";
		2796	}
		2797
		2798	warn "... nuking $pkg";
		2799	Symbol::delete_package $pkg;
		2800	}
		2801
		2802	warn "unloading all perl modules loaded from $LIBDIR";
		2803	while (my ($k, $v) = each %INC) {
		2804	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2805
		2806	warn "... unloading $k";
		2807	delete $INC{$k};
		2808
		2809	$k =~ s/\.pm$//;
		2810	$k =~ s/\//::/g;
		2811
		2812	if (my $cb = $k->can ("unload_module")) {
		2813	$cb->();
		2814	}
		2815
		2816	Symbol::delete_package $k;
		2817	}
		2818
		2819	warn "getting rid of safe::, as good as possible";
		2820	Symbol::delete_package "safe::$_"
		2821	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2822
		2823	warn "unloading cf.pm \"a bit\"";
		2824	delete $INC{"cf.pm"};
		2825	delete $INC{"cf/pod.pm"};
		2826
		2827	# don't, removes xs symbols, too,
		2828	# and global variables created in xs
		2829	#Symbol::delete_package __PACKAGE__;
		2830
		2831	warn "unload completed, starting to reload now";
		2832
		2833	warn "reloading cf.pm";
		2834	require cf;
		2835	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2836
		2837	warn "loading config and database again";
		2838	cf::cfg_load;
		2839
		2840	warn "loading extensions";
		2841	cf::load_extensions;
		2842
		2843	warn "reattaching attachments to objects/players";
		2844	_global_reattach; # objects, sockets
		2845	warn "reattaching attachments to maps";
		2846	reattach $_ for values %MAP;
		2847	warn "reattaching attachments to players";
		2848	reattach $_ for values %PLAYER;
		2849
		2850	warn "leaving sync_job";
		2851
		2852	1
		2853	} or do {
		2854	warn $@;
		2855	warn "error while reloading, exiting.";
		2856	exit 1;
		2857	};
		2858
231	warn "reloaded\n";	2859	warn "reloaded";
		2860	};
232		2861
		2862	our $RELOAD_WATCHER; # used only during reload
		2863
		2864	sub reload_perl() {
		2865	# doing reload synchronously and two reloads happen back-to-back,
		2866	# coro crashes during coro_state_free->destroy here.
		2867
		2868	$RELOAD_WATCHER ||= Event->timer (
		2869	reentrant => 0,
		2870	after => 0,
		2871	data => WF_AUTOCANCEL,
		2872	cb => sub {
		2873	do_reload_perl;
		2874	undef $RELOAD_WATCHER;
		2875	},
		2876	);
		2877	}
		2878
		2879	register_command "reload" => sub {
		2880	my ($who, $arg) = @_;
		2881
		2882	if ($who->flag (FLAG_WIZ)) {
233	$who->message ("reloaded");	2883	$who->message ("reloading server.");
		2884	async { reload_perl };
		2885	}
		2886	};
		2887
		2888	unshift @INC, $LIBDIR;
		2889
		2890	my $bug_warning = 0;
		2891
		2892	our @WAIT_FOR_TICK;
		2893	our @WAIT_FOR_TICK_BEGIN;
		2894
		2895	sub wait_for_tick {
		2896	return unless $TICK_WATCHER->is_active;
		2897	return if $Coro::current == $Coro::main;
		2898
		2899	my $signal = new Coro::Signal;
		2900	push @WAIT_FOR_TICK, $signal;
		2901	$signal->wait;
		2902	}
		2903
		2904	sub wait_for_tick_begin {
		2905	return unless $TICK_WATCHER->is_active;
		2906	return if $Coro::current == $Coro::main;
		2907
		2908	my $signal = new Coro::Signal;
		2909	push @WAIT_FOR_TICK_BEGIN, $signal;
		2910	$signal->wait;
		2911	}
		2912
		2913	my $min = 1e6;#d#
		2914	my $avg = 10;
		2915	$TICK_WATCHER = Event->timer (
		2916	reentrant => 0,
		2917	parked => 1,
		2918	prio => 0,
		2919	at => $NEXT_TICK || $TICK,
		2920	data => WF_AUTOCANCEL,
		2921	cb => sub {
		2922	if ($Coro::current != $Coro::main) {
		2923	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2924	unless ++$bug_warning > 10;
		2925	return;
		2926	}
		2927
		2928	$NOW = $tick_start = Event::time;
		2929
		2930	cf::server_tick; # one server iteration
		2931
		2932	0 && sync_job {#d#
		2933	for(1..10) {
		2934	my $t = Event::time;
		2935	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2936	or die;
		2937
		2938	$map->width (50);
		2939	$map->height (50);
		2940	$map->alloc;
		2941	$map->_load_objects ("/tmp/x.map", 1);
		2942	my $t = Event::time - $t;
		2943
		2944	#next unless $t < 0.0013;#d#
		2945	if ($t < $min) {
		2946	$min = $t;
		2947	}
		2948	$avg = $avg * 0.99 + $t * 0.01;
		2949	}
		2950	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2951	exit 0;
		2952	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2953	};
		2954
		2955	$RUNTIME += $TICK;
		2956	$NEXT_TICK += $TICK;
		2957
		2958	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2959	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2960	Coro::async_pool {
		2961	write_runtime
		2962	or warn "ERROR: unable to write runtime file: $!";
		2963	};
		2964	}
		2965
		2966	# my $AFTER = Event::time;
		2967	# warn $AFTER - $NOW;#d#
		2968
		2969	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2970	$sig->send;
		2971	}
		2972	while (my $sig = shift @WAIT_FOR_TICK) {
		2973	$sig->send;
		2974	}
		2975
		2976	$NOW = Event::time;
		2977
		2978	# if we are delayed by four ticks or more, skip them all
		2979	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		2980
		2981	$TICK_WATCHER->at ($NEXT_TICK);
		2982	$TICK_WATCHER->start;
		2983
		2984	$LOAD = ($NOW - $tick_start) / $TICK;
		2985	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2986
		2987	_post_tick;
		2988
		2989
		2990	},
		2991	);
		2992
		2993	{
		2994	BDB::max_poll_time $TICK * 0.1;
		2995	$BDB_POLL_WATCHER = Event->io (
		2996	reentrant => 0,
		2997	fd => BDB::poll_fileno,
		2998	poll => 'r',
		2999	prio => 0,
		3000	data => WF_AUTOCANCEL,
		3001	cb => \&BDB::poll_cb,
		3002	);
		3003	BDB::min_parallel 8;
		3004
		3005	BDB::set_sync_prepare {
		3006	my $status;
		3007	my $current = $Coro::current;
		3008	(
		3009	sub {
		3010	$status = $!;
		3011	$current->ready; undef $current;
		3012	},
		3013	sub {
		3014	Coro::schedule while defined $current;
		3015	$! = $status;
		3016	},
		3017	)
		3018	};
		3019
		3020	unless ($DB_ENV) {
		3021	$DB_ENV = BDB::db_env_create;
		3022
		3023	cf::sync_job {
		3024	eval {
		3025	BDB::db_env_open
		3026	$DB_ENV,
		3027	$BDBDIR,
		3028	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3029	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3030	0666;
		3031
		3032	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3033
		3034	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3035	$DB_ENV->set_lk_detect;
		3036	};
		3037
		3038	cf::cleanup "db_env_open(db): $@" if $@;
		3039	};
		3040	}
		3041	}
		3042
		3043	{
		3044	IO::AIO::min_parallel 8;
		3045
		3046	undef $Coro::AIO::WATCHER;
		3047	IO::AIO::max_poll_time $TICK * 0.1;
		3048	$AIO_POLL_WATCHER = Event->io (
		3049	reentrant => 0,
		3050	data => WF_AUTOCANCEL,
		3051	fd => IO::AIO::poll_fileno,
		3052	poll => 'r',
		3053	prio => 6,
		3054	cb => \&IO::AIO::poll_cb,
		3055	);
		3056	}
		3057
		3058	my $_log_backtrace;
		3059
		3060	sub _log_backtrace {
		3061	my ($msg, @addr) = @_;
		3062
		3063	$msg =~ s/\n//;
		3064
		3065	# limit the # of concurrent backtraces
		3066	if ($_log_backtrace < 2) {
		3067	++$_log_backtrace;
		3068	async {
		3069	my @bt = fork_call {
		3070	@addr = map { sprintf "%x", $_ } @addr;
		3071	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3072	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3073	or die "addr2line: $!";
		3074
		3075	my @funcs;
		3076	my @res = <$fh>;
		3077	chomp for @res;
		3078	while (@res) {
		3079	my ($func, $line) = splice @res, 0, 2, ();
		3080	push @funcs, "[$func] $line";
		3081	}
		3082
		3083	@funcs
		3084	};
		3085
		3086	LOG llevInfo, "[ABT] $msg\n";
		3087	LOG llevInfo, "[ABT] $_\n" for @bt;
		3088	--$_log_backtrace;
		3089	};
234	} else {	3090	} else {
235	$who->message ("Intruder Alert!");	3091	LOG llevInfo, "[ABT] $msg\n";
		3092	LOG llevInfo, "[ABT] [suppressed]\n";
236	}	3093	}
237	};
238
239	#############################################################################
240	# extcmd framework, basically convert ext <id> <pkg> arg1 args
241	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
242
243	sub on_extcmd {
244	my ($pl, $buf) = @_;
245
246	my ($type) = $buf =~ s/^(\S+) // ? $1 : "";
247
248	$extcmd{$type}[0]->($pl, $buf)
249	if $extcmd{$type};
250	}	3094	}
251		3095
252	#############################################################################	3096	# load additional modules
253	# load/save/clean perl data associated with a map	3097	use cf::pod;
254		3098
255	*on_mapclean = sub {	3099	END { cf::emergency_save }
256	my ($map) = @_;
257
258	my $path = $map->tmpname;
259	defined $path or return;
260
261	unlink "$path.cfperl";
262	};
263
264	*on_mapin =
265	*on_mapload = sub {
266	my ($map) = @_;
267
268	my $path = $map->tmpname;
269	$path = $map->path unless defined $path;
270
271	open my $fh, "<:raw", "$path.cfperl"
272	or return; # no perl data
273
274	my $data = Storable::thaw do { local $/; <$fh> };
275
276	$data->{version} <= 1
277	or return; # too new
278
279	$map->_set_obs ($data->{obs});
280	};
281
282	*on_mapout = sub {
283	my ($map) = @_;
284
285	my $path = $map->tmpname;
286	$path = $map->path unless defined $path;
287
288	my $obs = $map->_get_obs;
289
290	if (defined $obs) {
291	open my $fh, ">:raw", "$path.cfperl"
292	or die "$path.cfperl: $!";
293
294	stat $path;
295
296	print $fh Storable::nfreeze {
297	size => (stat _)[7],
298	time => (stat _)[9],
299	version => 1,
300	obs => $obs,
301	};
302
303	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
304	} else {
305	unlink "$path.cfperl";
306	}
307	};
308
309	#############################################################################
310	# load/save perl data associated with player->ob objects
311
312	*on_player_load = sub {
313	my ($ob, $path) = @_;
314
315	if (open my $fh, "<:raw", "$path.cfperl") {
316
317	#d##TODO#remove
318
319	my $data = Storable::thaw do { local $/; <$fh> };
320
321	$data->{version} <= 1
322	or return; # too new
323
324	%$ob = %{$data->{ob}};
325	return;
326	}
327
328	for my $o ($ob, $ob->inv) {
329	if (my $value = $o->get_ob_key_value ("_perl_data")) {
330	$o->set_ob_key_value ("_perl_data");
331
332	%$o = %{ Storable::thaw pack "H*", $value };
333	}
334	}
335	};
336
337	*on_player_save = sub {
338	my ($ob, $path) = @_;
339
340	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
341	for grep %$_, $ob, $ob->inv;
342
343	unlink "$path.cfperl";#d##TODO#remove
344	};
345
346	register "<global>", __PACKAGE__;
347
348	unshift @INC, maps_directory "perl";
349
350	load_extensions;
351		3100
352	1	3101	1
353		3102

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