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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.58 by root, Wed Aug 30 12:08:15 2006 UTC vs.
Revision 1.297 by root, Thu Jul 5 08:10:30 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;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		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 JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
		29	use Fcntl;
		30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
10	use Time::HiRes;	32	use Time::HiRes;
11	use Event;	33	use Compress::LZF;
		34
		35	# configure various modules to our taste
		36	#
		37	$Storable::canonical = 1; # reduce rsync transfers
		38	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		39	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		40
12	$Event::Eval = 1; # no idea why this is required, but it is	41	$Event::Eval = 1; # no idea why this is required, but it is
13		42
14	use strict;	43	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		44	$YAML::Syck::ImplicitUnicode = 1;
15		45
16	_reload_1;	46	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		47
		48	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		49
18	our %COMMAND = ();	50	our %COMMAND = ();
		51	our %COMMAND_TIME = ();
		52
		53	our @EXTS = (); # list of extension package names
		54	our %EXTCMD = ();
		55	our %EXTICMD = ();
		56	our %EXT_CORO = (); # coroutines bound to extensions
		57	our %EXT_MAP = (); # pluggable maps
		58
		59	our $RELOAD; # number of reloads so far
19	our @EVENT;	60	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		61
24	our $TICK = MAX_TIME * 1e-6;	62	our $CONFDIR = confdir;
		63	our $DATADIR = datadir;
		64	our $LIBDIR = "$DATADIR/ext";
		65	our $PODDIR = "$DATADIR/pod";
		66	our $MAPDIR = "$DATADIR/" . mapdir;
		67	our $LOCALDIR = localdir;
		68	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		69	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		70	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		71	our $RANDOMDIR = "$LOCALDIR/random";
		72	our $BDBDIR = "$LOCALDIR/db";
		73
		74	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
25	our $TICK_WATCHER;	75	our $TICK_WATCHER;
		76	our $AIO_POLL_WATCHER;
		77	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	78	our $NEXT_TICK;
		79	our $NOW;
		80	our $USE_FSYNC = 1; # use fsync to write maps - default off
		81
		82	our $BDB_POLL_WATCHER;
		83	our $DB_ENV;
		84
		85	our %CFG;
		86
		87	our $UPTIME; $UPTIME ||= time;
		88	our $RUNTIME;
		89
		90	our %PLAYER; # all users
		91	our %MAP; # all maps
		92	our $LINK_MAP; # the special {link} map, which is always available
		93
		94	# used to convert map paths into valid unix filenames by replacing / by ∕
		95	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		96
		97	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		98	our $LOADAVG; # same thing, but with alpha-smoothing
		99	our $tick_start; # for load detecting purposes
		100
		101	binmode STDOUT;
		102	binmode STDERR;
		103
		104	# read virtual server time, if available
		105	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		106	open my $fh, "<", "$LOCALDIR/runtime"
		107	or die "unable to read runtime file: $!";
		108	$RUNTIME = <$fh> + 0.;
		109	}
		110
		111	mkdir $_
		112	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		113
		114	our $EMERGENCY_POSITION;
		115
		116	sub cf::map::normalise;
		117
		118	#############################################################################
		119
		120	=head2 GLOBAL VARIABLES
		121
		122	=over 4
		123
		124	=item $cf::UPTIME
		125
		126	The timestamp of the server start (so not actually an uptime).
		127
		128	=item $cf::RUNTIME
		129
		130	The time this server has run, starts at 0 and is increased by $cf::TICK on
		131	every server tick.
		132
		133	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		134	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		135	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		136
		137	Various directories - "/etc", read-only install directory, perl-library
		138	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		139	unique-items directory, player file directory, random maps directory and
		140	database environment.
		141
		142	=item $cf::NOW
		143
		144	The time of the last (current) server tick.
		145
		146	=item $cf::TICK
		147
		148	The interval between server ticks, in seconds.
		149
		150	=item $cf::LOADAVG
		151
		152	The current CPU load on the server (alpha-smoothed), as a value between 0
		153	(none) and 1 (overloaded), indicating how much time is spent on processing
		154	objects per tick. Healthy values are < 0.5.
		155
		156	=item $cf::LOAD
		157
		158	The raw value load value from the last tick.
		159
		160	=item %cf::CFG
		161
		162	Configuration for the server, loaded from C</etc/crossfire/config>, or
		163	from wherever your confdir points to.
		164
		165	=item cf::wait_for_tick, cf::wait_for_tick_begin
		166
		167	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		168	returns directly I<after> the tick processing (and consequently, can only wake one process
		169	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		170
		171	=back
		172
		173	=cut
27		174
28	BEGIN {	175	BEGIN {
29	*CORE::GLOBAL::warn = sub {	176	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	177	my $msg = join "", @_;
		178
31	$msg .= "\n"	179	$msg .= "\n"
32	unless $msg =~ /\n$/;	180	unless $msg =~ /\n$/;
33		181
34	print STDERR "cfperl: $msg";	182	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		183
		184	utf8::encode $msg;
35	LOG llevError, "cfperl: $msg";	185	LOG llevError, $msg;
36	};	186	};
37	}	187	}
38		188
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	189	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		190	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	191	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	192	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	193	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44		194	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	195	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		196
75	# we bless all objects into (empty) derived classes to force a method lookup	197	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	198	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	199	for my $pkg (qw(
		200	cf::global cf::attachable
		201	cf::object cf::object::player
		202	cf::client cf::player
		203	cf::arch cf::living
		204	cf::map cf::party cf::region
		205	)) {
78	no strict 'refs';	206	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	207	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	208	}
81		209
82	$Event::DIED = sub {	210	$Event::DIED = sub {
83	warn "error in event callback: @_";	211	warn "error in event callback: @_";
84	};	212	};
85		213
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	214	#############################################################################
93	# utility functions
94		215
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	216	=head2 UTILITY FUNCTIONS
96		217
97	sub from_json($) {	218	=over 4
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101		219
102	sub to_json($) {	220	=item dumpval $ref
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	221
104	JSON::Syck::Dump $_[0]	222	=cut
		223
		224	sub dumpval {
		225	eval {
		226	local $SIG{__DIE__};
		227	my $d;
		228	if (1) {
		229	$d = new Data::Dumper([$_[0]], ["*var"]);
		230	$d->Terse(1);
		231	$d->Indent(2);
		232	$d->Quotekeys(0);
		233	$d->Useqq(1);
		234	#$d->Bless(...);
		235	$d->Seen($_[1]) if @_ > 1;
		236	$d = $d->Dump();
		237	}
		238	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		239	$d
		240	} || "[unable to dump $_[0]: '$@']";
105	}	241	}
		242
		243	=item $ref = cf::from_json $json
		244
		245	Converts a JSON string into the corresponding perl data structure.
		246
		247	=item $json = cf::to_json $ref
		248
		249	Converts a perl data structure into its JSON representation.
		250
		251	=cut
		252
		253	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		254
		255	sub to_json ($) { $json_coder->encode ($_[0]) }
		256	sub from_json ($) { $json_coder->decode ($_[0]) }
		257
		258	=item cf::lock_wait $string
		259
		260	Wait until the given lock is available. See cf::lock_acquire.
		261
		262	=item my $lock = cf::lock_acquire $string
		263
		264	Wait until the given lock is available and then acquires it and returns
		265	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		266	for example when the coroutine gets canceled), the lock is automatically
		267	returned.
		268
		269	Lock names should begin with a unique identifier (for example, cf::map::find
		270	uses map_find and cf::map::load uses map_load).
		271
		272	=item $locked = cf::lock_active $string
		273
		274	Return true if the lock is currently active, i.e. somebody has locked it.
		275
		276	=cut
		277
		278	our %LOCK;
		279
		280	sub lock_wait($) {
		281	my ($key) = @_;
		282
		283	# wait for lock, if any
		284	while ($LOCK{$key}) {
		285	push @{ $LOCK{$key} }, $Coro::current;
		286	Coro::schedule;
		287	}
		288	}
		289
		290	sub lock_acquire($) {
		291	my ($key) = @_;
		292
		293	# wait, to be sure we are not locked
		294	lock_wait $key;
		295
		296	$LOCK{$key} = [];
		297
		298	Coro::guard {
		299	# wake up all waiters, to be on the safe side
		300	$_->ready for @{ delete $LOCK{$key} };
		301	}
		302	}
		303
		304	sub lock_active($) {
		305	my ($key) = @_;
		306
		307	! ! $LOCK{$key}
		308	}
		309
		310	sub freeze_mainloop {
		311	return unless $TICK_WATCHER->is_active;
		312
		313	my $guard = Coro::guard {
		314	$TICK_WATCHER->start;
		315	};
		316	$TICK_WATCHER->stop;
		317	$guard
		318	}
		319
		320	=item cf::async { BLOCK }
		321
		322	Currently the same as Coro::async_pool, meaning you cannot use
		323	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		324	thing you are allowed to do is call C<prio> on it.
		325
		326	=cut
		327
		328	BEGIN { *async = \&Coro::async_pool }
		329
		330	=item cf::sync_job { BLOCK }
		331
		332	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		333	is always able to handle events or runnable, as Crossfire TRT is only
		334	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		335	acceptable.
		336
		337	If it must be done, put the blocking parts into C<sync_job>. This will run
		338	the given BLOCK in another coroutine while waiting for the result. The
		339	server will be frozen during this time, so the block should either finish
		340	fast or be very important.
		341
		342	=cut
		343
		344	sub sync_job(&) {
		345	my ($job) = @_;
		346
		347	if ($Coro::current == $Coro::main) {
		348	my $time = Event::time;
		349
		350	# this is the main coro, too bad, we have to block
		351	# till the operation succeeds, freezing the server :/
		352
		353	# TODO: use suspend/resume instead
		354	# (but this is cancel-safe)
		355	my $freeze_guard = freeze_mainloop;
		356
		357	my $busy = 1;
		358	my @res;
		359
		360	(async {
		361	@res = eval { $job->() };
		362	warn $@ if $@;
		363	undef $busy;
		364	})->prio (Coro::PRIO_MAX);
		365
		366	while ($busy) {
		367	Coro::cede or Event::one_event;
		368	}
		369
		370	$time = Event::time - $time;
		371
		372	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		373	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		374
		375	$tick_start += $time; # do not account sync jobs to server load
		376
		377	wantarray ? @res : $res[0]
		378	} else {
		379	# we are in another coroutine, how wonderful, everything just works
		380
		381	$job->()
		382	}
		383	}
		384
		385	=item $coro = cf::async_ext { BLOCK }
		386
		387	Like async, but this coro is automatically being canceled when the
		388	extension calling this is being unloaded.
		389
		390	=cut
		391
		392	sub async_ext(&) {
		393	my $cb = shift;
		394
		395	my $coro = &Coro::async ($cb);
		396
		397	$coro->on_destroy (sub {
		398	delete $EXT_CORO{$coro+0};
		399	});
		400	$EXT_CORO{$coro+0} = $coro;
		401
		402	$coro
		403	}
		404
		405	=item fork_call { }, $args
		406
		407	Executes the given code block with the given arguments in a seperate
		408	process, returning the results. Everything must be serialisable with
		409	Coro::Storable. May, of course, block. Note that the executed sub may
		410	never block itself or use any form of Event handling.
		411
		412	=cut
		413
		414	sub fork_call(&@) {
		415	my ($cb, @args) = @_;
		416
		417	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		418	# or die "socketpair: $!";
		419	pipe my $fh1, my $fh2
		420	or die "pipe: $!";
		421
		422	if (my $pid = fork) {
		423	close $fh2;
		424
		425	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		426	$res = Coro::Storable::thaw $res;
		427
		428	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		429
		430	die $$res unless "ARRAY" eq ref $res;
		431
		432	return wantarray ? @$res : $res->[-1];
		433	} else {
		434	reset_signals;
		435	local $SIG{__WARN__};
		436	local $SIG{__DIE__};
		437	eval {
		438	close $fh1;
		439
		440	my @res = eval { $cb->(@args) };
		441	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		442	};
		443
		444	warn $@ if $@;
		445	_exit 0;
		446	}
		447	}
		448
		449	=item $value = cf::db_get $family => $key
		450
		451	Returns a single value from the environment database.
		452
		453	=item cf::db_put $family => $key => $value
		454
		455	Stores the given C<$value> in the family. It can currently store binary
		456	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		457
		458	=cut
		459
		460	our $DB;
		461
		462	sub db_init {
		463	unless ($DB) {
		464	$DB = BDB::db_create $DB_ENV;
		465
		466	cf::sync_job {
		467	eval {
		468	$DB->set_flags (BDB::CHKSUM);
		469
		470	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		471	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		472	cf::cleanup "db_open(db): $!" if $!;
		473	};
		474	cf::cleanup "db_open(db): $@" if $@;
		475	};
		476	}
		477	}
		478
		479	sub db_get($$) {
		480	my $key = "$_[0]/$_[1]";
		481
		482	cf::sync_job {
		483	BDB::db_get $DB, undef, $key, my $data;
		484
		485	$! ? ()
		486	: $data
		487	}
		488	}
		489
		490	sub db_put($$$) {
		491	BDB::dbreq_pri 4;
		492	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		493	}
		494
		495	=item cf::cache $id => [$paths...], $processversion => $process
		496
		497	Generic caching function that returns the value of the resource $id,
		498	caching and regenerating as required.
		499
		500	This function can block.
		501
		502	=cut
		503
		504	sub cache {
		505	my ($id, $src, $processversion, $process) = @_;
		506
		507	my $meta =
		508	join "\x00",
		509	$processversion,
		510	map {
		511	aio_stat $_
		512	and Carp::croak "$_: $!";
		513
		514	($_, (stat _)[7,9])
		515	} @$src;
		516
		517	my $dbmeta = db_get cache => "$id/meta";
		518	if ($dbmeta ne $meta) {
		519	# changed, we may need to process
		520
		521	my @data;
		522	my $md5;
		523
		524	for (0 .. $#$src) {
		525	0 <= aio_load $src->[$_], $data[$_]
		526	or Carp::croak "$src->[$_]: $!";
		527	}
		528
		529	# if processing is expensive, check
		530	# checksum first
		531	if (1) {
		532	$md5 =
		533	join "\x00",
		534	$processversion,
		535	map {
		536	Coro::cede;
		537	($src->[$_], Digest::MD5::md5_hex $data[$_])
		538	} 0.. $#$src;
		539
		540
		541	my $dbmd5 = db_get cache => "$id/md5";
		542	if ($dbmd5 eq $md5) {
		543	db_put cache => "$id/meta", $meta;
		544
		545	return db_get cache => "$id/data";
		546	}
		547	}
		548
		549	my $t1 = Time::HiRes::time;
		550	my $data = $process->(\@data);
		551	my $t2 = Time::HiRes::time;
		552
		553	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		554
		555	db_put cache => "$id/data", $data;
		556	db_put cache => "$id/md5" , $md5;
		557	db_put cache => "$id/meta", $meta;
		558
		559	return $data;
		560	}
		561
		562	db_get cache => "$id/data"
		563	}
		564
		565	=item cf::datalog type => key => value, ...
		566
		567	Log a datalog packet of the given type with the given key-value pairs.
		568
		569	=cut
		570
		571	sub datalog($@) {
		572	my ($type, %kv) = @_;
		573	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		574	}
		575
		576	=back
		577
		578	=cut
106		579
107	#############################################################################	580	#############################################################################
108	# "new" plug-in system
109		581
110	=head3 EVENTS AND OBJECT ATTACHMENTS	582	=head2 ATTACHABLE OBJECTS
		583
		584	Many objects in crossfire are so-called attachable objects. That means you can
		585	attach callbacks/event handlers (a collection of which is called an "attachment")
		586	to it. All such attachable objects support the following methods.
		587
		588	In the following description, CLASS can be any of C<global>, C<object>
		589	C<player>, C<client> or C<map> (i.e. the attachable objects in
		590	Crossfire TRT).
111		591
112	=over 4	592	=over 4
113		593
114	=item $object->attach ($attachment, key => $value...)
115
116	=item $object->detach ($attachment)
117
118	Attach/detach a pre-registered attachment to an object.
119
120	=item $player->attach ($attachment, key => $value...)
121
122	=item $player->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to a player.
125
126	=item $map->attach ($attachment, key => $value...)	594	=item $attachable->attach ($attachment, key => $value...)
127		595
128	=item $map->detach ($attachment)	596	=item $attachable->detach ($attachment)
129		597
130	Attach/detach a pre-registered attachment to a map.	598	Attach/detach a pre-registered attachment to a specific object and give it
		599	the specified key/value pairs as arguments.
131		600
132	=item $bool = $object->attached ($name)	601	Example, attach a minesweeper attachment to the given object, making it a
		602	10x10 minesweeper game:
133		603
134	=item $bool = $player->attached ($name)	604	$obj->attach (minesweeper => width => 10, height => 10);
135		605
136	=item $bool = $map->attached ($name)	606	=item $bool = $attachable->attached ($name)
137		607
138	Checks wether the named attachment is currently attached to the object.	608	Checks wether the named attachment is currently attached to the object.
139		609
140	=item cf::attach_global ...	610	=item cf::CLASS->attach ...
141		611
142	Attach handlers for global events.	612	=item cf::CLASS->detach ...
143		613
144	This and all following C<attach_*>-functions expect any number of the	614	Define an anonymous attachment and attach it to all objects of the given
145	following handler/hook descriptions:	615	CLASS. See the next function for an explanation of its arguments.
		616
		617	You can attach to global events by using the C<cf::global> class.
		618
		619	Example, log all player logins:
		620
		621	cf::player->attach (
		622	on_login => sub {
		623	my ($pl) = @_;
		624	...
		625	},
		626	);
		627
		628	Example, attach to the jeweler skill:
		629
		630	cf::object->attach (
		631	type => cf::SKILL,
		632	subtype => cf::SK_JEWELER,
		633	on_use_skill => sub {
		634	my ($sk, $ob, $part, $dir, $msg) = @_;
		635	...
		636	},
		637	);
		638
		639	=item cf::CLASS::attachment $name, ...
		640
		641	Register an attachment by C<$name> through which attachable objects of the
		642	given CLASS can refer to this attachment.
		643
		644	Some classes such as crossfire maps and objects can specify attachments
		645	that are attached at load/instantiate time, thus the need for a name.
		646
		647	These calls expect any number of the following handler/hook descriptions:
146		648
147	=over 4	649	=over 4
148		650
149	=item prio => $number	651	=item prio => $number
150		652
…		…
152	by another C<prio> setting). Lower priority handlers get executed	654	by another C<prio> setting). Lower priority handlers get executed
153	earlier. The default priority is C<0>, and many built-in handlers are	655	earlier. The default priority is C<0>, and many built-in handlers are
154	registered at priority C<-1000>, so lower priorities should not be used	656	registered at priority C<-1000>, so lower priorities should not be used
155	unless you know what you are doing.	657	unless you know what you are doing.
156		658
		659	=item type => $type
		660
		661	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		662	given type of objects only (the additional parameter C<subtype> can be
		663	used to further limit to the given subtype).
		664
157	=item on_I<event> => \&cb	665	=item on_I<event> => \&cb
158		666
159	Call the given code reference whenever the named event happens (event is	667	Call the given code reference whenever the named event happens (event is
160	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	668	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
161	handlers are recognised generally depends on the type of object these	669	handlers are recognised generally depends on the type of object these
…		…
170	package and register them. Only handlers for eevents supported by the	678	package and register them. Only handlers for eevents supported by the
171	object/class are recognised.	679	object/class are recognised.
172		680
173	=back	681	=back
174		682
175	=item cf::attach_to_type $object_type, $subtype, ...	683	Example, define an attachment called "sockpuppet" that calls the given
		684	event handler when a monster attacks:
176		685
177	Attach handlers for a specific object type (e.g. TRANSPORT) and	686	cf::object::attachment sockpuppet =>
178	subtype. If C<$subtype> is zero or undef, matches all objects of the given	687	on_skill_attack => sub {
179	type.	688	my ($self, $victim) = @_;
180		689	...
181	=item cf::attach_to_objects ...
182
183	Attach handlers to all objects. Do not use this except for debugging or
184	very rare events, as handlers are (obviously) called for I<all> objects in
185	the game.
186
187	=item cf::attach_to_players ...
188
189	Attach handlers to all players.
190
191	=item cf::attach_to_maps ...
192
193	Attach handlers to all maps.
194
195	=item cf:register_attachment $name, ...
196
197	Register an attachment by name through which objects can refer to this
198	attachment.
199
200	=item cf:register_player_attachment $name, ...
201
202	Register an attachment by name through which players can refer to this
203	attachment.
204
205	=item cf:register_map_attachment $name, ...
206
207	Register an attachment by name through which maps can refer to this
208	attachment.
209
210	=cut
211
212	# the following variables are defined in .xs and must not be re-created
213	our @CB_GLOBAL = (); # registry for all global events
214	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
215	our @CB_PLAYER = ();
216	our @CB_TYPE = (); # registry for type (cf-object class) based events
217	our @CB_MAP = ();
218
219	my %attachment;
220
221	sub _attach_cb($\%$$$) {
222	my ($registry, $undo, $event, $prio, $cb) = @_;
223
224	use sort 'stable';
225
226	$cb = [$prio, $cb];
227
228	@{$registry->[$event]} = sort
229	{ $a->[0] cmp $b->[0] }
230	@{$registry->[$event] || []}, $cb;
231
232	push @{$undo->{cb}}, [$event, $cb];
233	}
234
235	# attach handles attaching event callbacks
236	# the only thing the caller has to do is pass the correct
237	# registry (== where the callback attaches to).
238	sub _attach(\@$@) {
239	my ($registry, $klass, @arg) = @_;
240
241	my $prio = 0;
242
243	my %undo = (
244	registry => $registry,
245	cb => [],
246	);
247
248	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
249
250	while (@arg) {
251	my $type = shift @arg;
252
253	if ($type eq "prio") {
254	$prio = shift @arg;
255
256	} elsif ($type eq "package") {
257	my $pkg = shift @arg;
258
259	while (my ($name, $id) = each %cb_id) {
260	if (my $cb = $pkg->can ($name)) {
261	_attach_cb $registry, %undo, $id, $prio, $cb;
262	}
263	}	690	}
264
265	} elsif (exists $cb_id{$type}) {
266	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
267
268	} elsif (ref $type) {
269	warn "attaching objects not supported, ignoring.\n";
270
271	} else {
272	shift @arg;
273	warn "attach argument '$type' not supported, ignoring.\n";
274	}
275	}
276
277	\%undo
278	}
279
280	sub _attach_attachment {
281	my ($obj, $name, %arg) = @_;
282
283	return if exists $obj->{_attachment}{$name};
284
285	my $res;
286
287	if (my $attach = $attachment{$name}) {
288	my $registry = $obj->registry;
289
290	for (@$attach) {
291	my ($klass, @attach) = @$_;
292	$res = _attach @$registry, $klass, @attach;
293	}
294
295	$obj->{$name} = \%arg;
296	} else {
297	warn "object uses attachment '$name' that is not available, postponing.\n";
298	}
299
300	$obj->{_attachment}{$name} = undef;
301
302	$res->{attachment} = $name;
303	$res
304	}
305
306	*cf::object::attach =
307	*cf::player::attach =
308	*cf::map::attach = sub {
309	my ($obj, $name, %arg) = @_;
310
311	_attach_attachment $obj, $name, %arg;
312	};
313
314	# all those should be optimised
315	*cf::object::detach =
316	*cf::player::detach =
317	*cf::map::detach = sub {
318	my ($obj, $name) = @_;
319
320	delete $obj->{_attachment}{$name};
321	reattach ($obj);
322	};
323
324	*cf::object::attached =
325	*cf::player::attached =
326	*cf::map::attached = sub {
327	my ($obj, $name) = @_;
328
329	exists $obj->{_attachment}{$name}
330	};
331
332	sub attach_global {
333	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
334	}
335
336	sub attach_to_type {
337	my $type = shift;
338	my $subtype = shift;
339
340	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
341	}
342
343	sub attach_to_objects {
344	_attach @CB_OBJECT, KLASS_OBJECT, @_
345	}
346
347	sub attach_to_players {
348	_attach @CB_PLAYER, KLASS_PLAYER, @_
349	}
350
351	sub attach_to_maps {
352	_attach @CB_MAP, KLASS_MAP, @_
353	}
354
355	sub register_attachment {
356	my $name = shift;
357
358	$attachment{$name} = [[KLASS_OBJECT, @_]];
359	}
360
361	sub register_player_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_PLAYER, @_]];
365	}
366
367	sub register_map_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_MAP, @_]];
371	}
372
373	our $override;
374	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
375
376	sub override {
377	$override = 1;
378	@invoke_results = ();
379	}
380
381	sub do_invoke {
382	my $event = shift;
383	my $callbacks = shift;
384
385	@invoke_results = ();
386
387	local $override;
388
389	for (@$callbacks) {
390	eval { &{$_->[1]} };
391
392	if ($@) {
393	warn "$@";
394	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
395	override;
396	}
397
398	return 1 if $override;
399	}
400
401	0	691	}
402	}
403		692
404	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	693	=item $attachable->valid
405
406	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
407
408	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
409
410	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
411
412	Generate a global/object/player/map-specific event with the given arguments.
413
414	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
415	removed in future versions), and there is no public API to access override
416	results (if you must, access C<@cf::invoke_results> directly).
417
418	=back
419
420	=head2 methods valid for all pointers
421
422	=over 4
423
424	=item $object->valid
425
426	=item $player->valid
427
428	=item $map->valid
429		694
430	Just because you have a perl object does not mean that the corresponding	695	Just because you have a perl object does not mean that the corresponding
431	C-level object still exists. If you try to access an object that has no	696	C-level object still exists. If you try to access an object that has no
432	valid C counterpart anymore you get an exception at runtime. This method	697	valid C counterpart anymore you get an exception at runtime. This method
433	can be used to test for existence of the C object part without causing an	698	can be used to test for existence of the C object part without causing an
434	exception.	699	exception.
435		700
		701	=cut
		702
		703	# the following variables are defined in .xs and must not be re-created
		704	our @CB_GLOBAL = (); # registry for all global events
		705	our @CB_ATTACHABLE = (); # registry for all attachables
		706	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		707	our @CB_PLAYER = ();
		708	our @CB_CLIENT = ();
		709	our @CB_TYPE = (); # registry for type (cf-object class) based events
		710	our @CB_MAP = ();
		711
		712	my %attachment;
		713
		714	sub cf::attachable::thawer_merge {
		715	# simply override everything except _meta
		716	local $_[0]{_meta};
		717	%{$_[0]} = %{$_[1]};
		718	}
		719
		720	sub _attach_cb($$$$) {
		721	my ($registry, $event, $prio, $cb) = @_;
		722
		723	use sort 'stable';
		724
		725	$cb = [$prio, $cb];
		726
		727	@{$registry->[$event]} = sort
		728	{ $a->[0] cmp $b->[0] }
		729	@{$registry->[$event] || []}, $cb;
		730	}
		731
		732	# hack
		733	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		734
		735	# attach handles attaching event callbacks
		736	# the only thing the caller has to do is pass the correct
		737	# registry (== where the callback attaches to).
		738	sub _attach {
		739	my ($registry, $klass, @arg) = @_;
		740
		741	my $object_type;
		742	my $prio = 0;
		743	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		744
		745	#TODO: get rid of this hack
		746	if ($attachable_klass{$klass}) {
		747	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		748	}
		749
		750	while (@arg) {
		751	my $type = shift @arg;
		752
		753	if ($type eq "prio") {
		754	$prio = shift @arg;
		755
		756	} elsif ($type eq "type") {
		757	$object_type = shift @arg;
		758	$registry = $CB_TYPE[$object_type] ||= [];
		759
		760	} elsif ($type eq "subtype") {
		761	defined $object_type or Carp::croak "subtype specified without type";
		762	my $object_subtype = shift @arg;
		763	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		764
		765	} elsif ($type eq "package") {
		766	my $pkg = shift @arg;
		767
		768	while (my ($name, $id) = each %cb_id) {
		769	if (my $cb = $pkg->can ($name)) {
		770	_attach_cb $registry, $id, $prio, $cb;
		771	}
		772	}
		773
		774	} elsif (exists $cb_id{$type}) {
		775	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		776
		777	} elsif (ref $type) {
		778	warn "attaching objects not supported, ignoring.\n";
		779
		780	} else {
		781	shift @arg;
		782	warn "attach argument '$type' not supported, ignoring.\n";
		783	}
		784	}
		785	}
		786
		787	sub _object_attach {
		788	my ($obj, $name, %arg) = @_;
		789
		790	return if exists $obj->{_attachment}{$name};
		791
		792	if (my $attach = $attachment{$name}) {
		793	my $registry = $obj->registry;
		794
		795	for (@$attach) {
		796	my ($klass, @attach) = @$_;
		797	_attach $registry, $klass, @attach;
		798	}
		799
		800	$obj->{$name} = \%arg;
		801	} else {
		802	warn "object uses attachment '$name' which is not available, postponing.\n";
		803	}
		804
		805	$obj->{_attachment}{$name} = undef;
		806	}
		807
		808	sub cf::attachable::attach {
		809	if (ref $_[0]) {
		810	_object_attach @_;
		811	} else {
		812	_attach shift->_attach_registry, @_;
		813	}
		814	_recalc_want;
		815	};
		816
		817	# all those should be optimised
		818	sub cf::attachable::detach {
		819	my ($obj, $name) = @_;
		820
		821	if (ref $obj) {
		822	delete $obj->{_attachment}{$name};
		823	reattach ($obj);
		824	} else {
		825	Carp::croak "cannot, currently, detach class attachments";
		826	}
		827	_recalc_want;
		828	};
		829
		830	sub cf::attachable::attached {
		831	my ($obj, $name) = @_;
		832
		833	exists $obj->{_attachment}{$name}
		834	}
		835
		836	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		837	eval "#line " . __LINE__ . " 'cf.pm'
		838	sub cf::\L$klass\E::_attach_registry {
		839	(\\\@CB_$klass, KLASS_$klass)
		840	}
		841
		842	sub cf::\L$klass\E::attachment {
		843	my \$name = shift;
		844
		845	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		846	}
		847	";
		848	die if $@;
		849	}
		850
		851	our $override;
		852	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		853
		854	sub override {
		855	$override = 1;
		856	@invoke_results = ();
		857	}
		858
		859	sub do_invoke {
		860	my $event = shift;
		861	my $callbacks = shift;
		862
		863	@invoke_results = ();
		864
		865	local $override;
		866
		867	for (@$callbacks) {
		868	eval { &{$_->[1]} };
		869
		870	if ($@) {
		871	warn "$@";
		872	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		873	override;
		874	}
		875
		876	return 1 if $override;
		877	}
		878
		879	0
		880	}
		881
		882	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		883
		884	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		885
		886	Generate an object-specific event with the given arguments.
		887
		888	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		889	removed in future versions), and there is no public API to access override
		890	results (if you must, access C<@cf::invoke_results> directly).
		891
436	=back	892	=back
437		893
438	=cut	894	=cut
439
440	*cf::object::valid =
441	*cf::player::valid =
442	*cf::map::valid = \&cf::_valid;
443		895
444	#############################################################################	896	#############################################################################
445	# object support	897	# object support
446		898
447	sub instantiate {
448	my ($obj, $data) = @_;
449
450	$data = from_json $data;
451
452	for (@$data) {
453	my ($name, $args) = @$_;
454
455	$obj->attach ($name, %{$args || {} });
456	}
457	}
458
459	# basically do the same as instantiate, without calling instantiate
460	sub reattach {	899	sub reattach {
		900	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	901	my ($obj) = @_;
		902
		903	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		904
462	my $registry = $obj->registry;	905	my $registry = $obj->registry;
463		906
464	@$registry = ();	907	@$registry = ();
465		908
466	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	909	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
467		910
468	for my $name (keys %{ $obj->{_attachment} || {} }) {	911	for my $name (keys %{ $obj->{_attachment} || {} }) {
469	if (my $attach = $attachment{$name}) {	912	if (my $attach = $attachment{$name}) {
470	for (@$attach) {	913	for (@$attach) {
471	my ($klass, @attach) = @$_;	914	my ($klass, @attach) = @$_;
472	_attach @$registry, $klass, @attach;	915	_attach $registry, $klass, @attach;
473	}	916	}
474	} else {	917	} else {
475	warn "object uses attachment '$name' that is not available, postponing.\n";	918	warn "object uses attachment '$name' that is not available, postponing.\n";
476	}	919	}
477	}	920	}
478	}	921	}
479		922
480	sub object_freezer_save {	923	cf::attachable->attach (
481	my ($filename, $objs) = @_;
482
483	if (@$objs) {
484	open my $fh, ">:raw", "$filename.pst~";
485	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
486	close $fh;
487	chmod SAVE_MODE, "$filename.pst~";
488	rename "$filename.pst~", "$filename.pst";
489	} else {
490	unlink "$filename.pst";
491	}
492
493	chmod SAVE_MODE, "$filename~";
494	rename "$filename~", $filename;
495	}
496
497	sub object_thawer_load {
498	my ($filename) = @_;
499
500	open my $fh, "<:raw:perlio", "$filename.pst"
501	or return;
502
503	eval { local $/; (Storable::thaw <$fh>)->{objs} }
504	}
505
506	attach_to_objects
507	prio => -1000000,	924	prio => -1000000,
		925	on_instantiate => sub {
		926	my ($obj, $data) = @_;
		927
		928	$data = from_json $data;
		929
		930	for (@$data) {
		931	my ($name, $args) = @$_;
		932
		933	$obj->attach ($name, %{$args || {} });
		934	}
		935	},
		936	on_reattach => \&reattach,
508	on_clone => sub {	937	on_clone => sub {
509	my ($src, $dst) = @_;	938	my ($src, $dst) = @_;
510		939
511	@{$dst->registry} = @{$src->registry};	940	@{$dst->registry} = @{$src->registry};
512		941
513	%$dst = %$src;	942	%$dst = %$src;
514		943
515	%{$dst->{_attachment}} = %{$src->{_attachment}}	944	%{$dst->{_attachment}} = %{$src->{_attachment}}
516	if exists $src->{_attachment};	945	if exists $src->{_attachment};
517	},	946	},
518	;	947	);
		948
		949	sub object_freezer_save {
		950	my ($filename, $rdata, $objs) = @_;
		951
		952	sync_job {
		953	if (length $$rdata) {
		954	warn sprintf "saving %s (%d,%d)\n",
		955	$filename, length $$rdata, scalar @$objs;
		956
		957	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		958	chmod SAVE_MODE, $fh;
		959	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		960	aio_fsync $fh if $cf::USE_FSYNC;
		961	close $fh;
		962
		963	if (@$objs) {
		964	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		965	chmod SAVE_MODE, $fh;
		966	my $data = Storable::nfreeze { version => 1, objs => $objs };
		967	aio_write $fh, 0, (length $data), $data, 0;
		968	aio_fsync $fh if $cf::USE_FSYNC;
		969	close $fh;
		970	aio_rename "$filename.pst~", "$filename.pst";
		971	}
		972	} else {
		973	aio_unlink "$filename.pst";
		974	}
		975
		976	aio_rename "$filename~", $filename;
		977	} else {
		978	warn "FATAL: $filename~: $!\n";
		979	}
		980	} else {
		981	aio_unlink $filename;
		982	aio_unlink "$filename.pst";
		983	}
		984	}
		985	}
		986
		987	sub object_freezer_as_string {
		988	my ($rdata, $objs) = @_;
		989
		990	use Data::Dumper;
		991
		992	$$rdata . Dumper $objs
		993	}
		994
		995	sub object_thawer_load {
		996	my ($filename) = @_;
		997
		998	my ($data, $av);
		999
		1000	(aio_load $filename, $data) >= 0
		1001	or return;
		1002
		1003	unless (aio_stat "$filename.pst") {
		1004	(aio_load "$filename.pst", $av) >= 0
		1005	or return;
		1006	$av = eval { (Storable::thaw $av)->{objs} };
		1007	}
		1008
		1009	warn sprintf "loading %s (%d)\n",
		1010	$filename, length $data, scalar @{$av || []};
		1011	return ($data, $av);
		1012	}
		1013
		1014	=head2 COMMAND CALLBACKS
		1015
		1016	=over 4
		1017
		1018	=cut
519		1019
520	#############################################################################	1020	#############################################################################
521	# old plug-in events	1021	# command handling &c
522		1022
523	sub inject_event {	1023	=item cf::register_command $name => \&callback($ob,$args);
524	my $extension = shift;
525	my $event_code = shift;
526		1024
527	my $cb = $hook[$event_code]{$extension}	1025	Register a callback for execution when the client sends the user command
528	or return;	1026	$name.
529		1027
530	&$cb	1028	=cut
531	}
532
533	sub inject_global_event {
534	my $event = shift;
535
536	my $cb = $hook[$event]
537	or return;
538
539	List::Util::max map &$_, values %$cb
540	}
541
542	sub inject_command {
543	my ($name, $obj, $params) = @_;
544
545	for my $cmd (@{ $command{$name} }) {
546	$cmd->[1]->($obj, $params);
547	}
548
549	-1
550	}
551		1029
552	sub register_command {	1030	sub register_command {
553	my ($name, $time, $cb) = @_;	1031	my ($name, $cb) = @_;
554		1032
555	my $caller = caller;	1033	my $caller = caller;
556	#warn "registering command '$name/$time' to '$caller'";	1034	#warn "registering command '$name/$time' to '$caller'";
557		1035
558	push @{ $command{$name} }, [$time, $cb, $caller];	1036	push @{ $COMMAND{$name} }, [$caller, $cb];
559	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
560	}	1037	}
		1038
		1039	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1040
		1041	Register a callback for execution when the client sends an (synchronous)
		1042	extcmd packet. Ext commands will be processed in the order they are
		1043	received by the server, like other user commands. The first argument is
		1044	the logged-in player. Ext commands can only be processed after a player
		1045	has logged in successfully.
		1046
		1047	If the callback returns something, it is sent back as if reply was being
		1048	called.
		1049
		1050	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1051
		1052	Register a callback for execution when the client sends an (asynchronous)
		1053	exticmd packet. Exti commands are processed by the server as soon as they
		1054	are received, i.e. out of order w.r.t. other commands. The first argument
		1055	is a client socket. Exti commands can be received anytime, even before
		1056	log-in.
		1057
		1058	If the callback returns something, it is sent back as if reply was being
		1059	called.
		1060
		1061	=cut
561		1062
562	sub register_extcmd {	1063	sub register_extcmd {
563	my ($name, $cb) = @_;	1064	my ($name, $cb) = @_;
564		1065
565	my $caller = caller;	1066	$EXTCMD{$name} = $cb;
566	#warn "registering extcmd '$name' to '$caller'";
567
568	$extcmd{$name} = [$cb, $caller];
569	}	1067	}
570		1068
571	sub register {	1069	sub register_exticmd {
572	my ($base, $pkg) = @_;	1070	my ($name, $cb) = @_;
573		1071
574	#TODO	1072	$EXTICMD{$name} = $cb;
575	}	1073	}
576		1074
577	sub load_extension {	1075	cf::player->attach (
578	my ($path) = @_;	1076	on_command => sub {
		1077	my ($pl, $name, $params) = @_;
579		1078
580	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1079	my $cb = $COMMAND{$name}
581	my $base = $1;	1080	or return;
582	my $pkg = $1;
583	$pkg =~ s/[^[:word:]]/_/g;
584	$pkg = "ext::$pkg";
585		1081
586	warn "loading '$path' into '$pkg'\n";	1082	for my $cmd (@$cb) {
587		1083	$cmd->[1]->($pl->ob, $params);
588	open my $fh, "<:utf8", $path
589	or die "$path: $!";
590
591	my $source =
592	"package $pkg; use strict; use utf8;\n"
593	. "#line 1 \"$path\"\n{\n"
594	. (do { local $/; <$fh> })
595	. "\n};\n1";
596
597	eval $source
598	or die "$path: $@";
599
600	push @exts, $pkg;
601	$ext_pkg{$base} = $pkg;
602
603	# no strict 'refs';
604	# @{"$pkg\::ISA"} = ext::;
605
606	register $base, $pkg;
607	}
608
609	sub unload_extension {
610	my ($pkg) = @_;
611
612	warn "removing extension $pkg\n";
613
614	# remove hooks
615	#TODO
616	# for my $idx (0 .. $#PLUGIN_EVENT) {
617	# delete $hook[$idx]{$pkg};
618	# }
619
620	# remove commands
621	for my $name (keys %command) {
622	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
623
624	if (@cb) {
625	$command{$name} = \@cb;
626	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
627	} else {
628	delete $command{$name};
629	delete $COMMAND{"$name\000"};
630	}
631	}
632
633	# remove extcmds
634	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
635	delete $extcmd{$name};
636	}
637
638	if (my $cb = $pkg->can ("unload")) {
639	eval {
640	$cb->($pkg);
641	1
642	} or warn "$pkg unloaded, but with errors: $@";
643	}
644
645	Symbol::delete_package $pkg;
646	}
647
648	sub load_extensions {
649	my $LIBDIR = maps_directory "perl";
650
651	for my $ext (<$LIBDIR/*.ext>) {
652	next unless -r $ext;
653	eval {
654	load_extension $ext;
655	1
656	} or warn "$ext not loaded: $@";
657	}
658	}
659
660	sub _perl_reload(&) {
661	my ($msg) = @_;
662
663	$msg->("reloading...");
664
665	eval {
666	# 1. cancel all watchers
667	$_->cancel for Event::all_watchers;
668
669	# 2. unload all extensions
670	for (@exts) {
671	$msg->("unloading <$_>");
672	unload_extension $_;
673	}
674
675	# 3. unload all modules loaded from $LIBDIR
676	while (my ($k, $v) = each %INC) {
677	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
678
679	$msg->("removing <$k>");
680	delete $INC{$k};
681
682	$k =~ s/\.pm$//;
683	$k =~ s/\//::/g;
684
685	if (my $cb = $k->can ("unload_module")) {
686	$cb->();
687	}
688
689	Symbol::delete_package $k;
690	}
691
692	# 4. get rid of safe::, as good as possible
693	Symbol::delete_package "safe::$_"
694	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
695
696	# 5. remove register_script_function callbacks
697	# TODO
698
699	# 6. unload cf.pm "a bit"
700	delete $INC{"cf.pm"};
701
702	# don't, removes xs symbols, too,
703	# and global variables created in xs
704	#Symbol::delete_package __PACKAGE__;
705
706	# 7. reload cf.pm
707	$msg->("reloading cf.pm");
708	require cf;
709	};
710	$msg->($@) if $@;
711
712	$msg->("reloaded");
713	};
714
715	sub perl_reload() {
716	_perl_reload {
717	warn $_[0];
718	print "$_[0]\n";
719	};
720	}
721
722	register_command "perl-reload", 0, sub {
723	my ($who, $arg) = @_;
724
725	if ($who->flag (FLAG_WIZ)) {
726	_perl_reload {
727	warn $_[0];
728	$who->message ($_[0]);
729	};	1084	}
		1085
		1086	cf::override;
730	}	1087	},
731	};
732
733	#############################################################################
734	# extcmd framework, basically convert ext <msg>
735	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
736
737	attach_to_players
738	on_extcmd => sub {	1088	on_extcmd => sub {
739	my ($pl, $buf) = @_;	1089	my ($pl, $buf) = @_;
740		1090
741	my $msg = eval { from_json $buf };	1091	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
742		1092
743	if (ref $msg) {	1093	if (ref $msg) {
744	if (my $cb = $extcmd{$msg->{msgtype}}) {	1094	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
745	if (my %reply = $cb->[0]->($pl, $msg)) {	1095	if (my %reply = $cb->($pl, $msg)) {
746	$pl->ext_reply ($msg->{msgid}, %reply);	1096	$pl->ext_reply ($msg->{msgid}, %reply);
747	}	1097	}
748	}	1098	}
749	} else {	1099	} else {
750	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1100	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
751	}	1101	}
752		1102
753	cf::override;	1103	cf::override;
754	},	1104	},
755	;	1105	);
		1106
		1107	sub load_extensions {
		1108	cf::sync_job {
		1109	my %todo;
		1110
		1111	for my $path (<$LIBDIR/*.ext>) {
		1112	next unless -r $path;
		1113
		1114	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1115	my $base = $1;
		1116	my $pkg = $1;
		1117	$pkg =~ s/[^[:word:]]/_/g;
		1118	$pkg = "ext::$pkg";
		1119
		1120	open my $fh, "<:utf8", $path
		1121	or die "$path: $!";
		1122
		1123	my $source = do { local $/; <$fh> };
		1124
		1125	my %ext = (
		1126	path => $path,
		1127	base => $base,
		1128	pkg => $pkg,
		1129	);
		1130
		1131	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1132	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1133
		1134	$ext{source} =
		1135	"package $pkg; use strict; use utf8;\n"
		1136	. "#line 1 \"$path\"\n{\n"
		1137	. $source
		1138	. "\n};\n1";
		1139
		1140	$todo{$base} = \%ext;
		1141	}
		1142
		1143	my %done;
		1144	while (%todo) {
		1145	my $progress;
		1146
		1147	while (my ($k, $v) = each %todo) {
		1148	for (split /,\s*/, $v->{meta}{depends}) {
		1149	goto skip
		1150	unless exists $done{$_};
		1151	}
		1152
		1153	warn "... loading '$k' into '$v->{pkg}'\n";
		1154
		1155	unless (eval $v->{source}) {
		1156	my $msg = $@ ? "$v->{path}: $@\n"
		1157	: "$v->{base}: extension inactive.\n";
		1158
		1159	if (exists $v->{meta}{mandatory}) {
		1160	warn $msg;
		1161	warn "mandatory extension failed to load, exiting.\n";
		1162	exit 1;
		1163	}
		1164
		1165	warn $msg;
		1166	}
		1167
		1168	$done{$k} = delete $todo{$k};
		1169	push @EXTS, $v->{pkg};
		1170	$progress = 1;
		1171	}
		1172
		1173	skip:
		1174	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1175	unless $progress;
		1176	}
		1177	};
		1178	}
756		1179
757	#############################################################################	1180	#############################################################################
758	# load/save/clean perl data associated with a map
759		1181
760	*cf::mapsupport::on_clean = sub {	1182	=back
		1183
		1184	=head2 CORE EXTENSIONS
		1185
		1186	Functions and methods that extend core crossfire objects.
		1187
		1188	=cut
		1189
		1190	package cf::player;
		1191
		1192	use Coro::AIO;
		1193
		1194	=head3 cf::player
		1195
		1196	=over 4
		1197
		1198	=item cf::player::find $login
		1199
		1200	Returns the given player object, loading it if necessary (might block).
		1201
		1202	=cut
		1203
		1204	sub playerdir($) {
		1205	"$PLAYERDIR/"
		1206	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1207	}
		1208
		1209	sub path($) {
		1210	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1211
		1212	(playerdir $login) . "/playerdata"
		1213	}
		1214
		1215	sub find_active($) {
		1216	$cf::PLAYER{$_[0]}
		1217	and $cf::PLAYER{$_[0]}->active
		1218	and $cf::PLAYER{$_[0]}
		1219	}
		1220
		1221	sub exists($) {
		1222	my ($login) = @_;
		1223
		1224	$cf::PLAYER{$login}
		1225	or cf::sync_job { !aio_stat path $login }
		1226	}
		1227
		1228	sub find($) {
		1229	return $cf::PLAYER{$_[0]} || do {
		1230	my $login = $_[0];
		1231
		1232	my $guard = cf::lock_acquire "user_find:$login";
		1233
		1234	$cf::PLAYER{$_[0]} || do {
		1235	# rename old playerfiles to new ones
		1236	#TODO: remove when no longer required
		1237	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1238	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1239	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1240	aio_unlink +(playerdir $login) . "/$login.pl";
		1241
		1242	my $pl = load_pl path $login
		1243	or return;
		1244	$cf::PLAYER{$login} = $pl
		1245	}
		1246	}
		1247	}
		1248
		1249	sub save($) {
		1250	my ($pl) = @_;
		1251
		1252	return if $pl->{deny_save};
		1253
		1254	my $path = path $pl;
		1255	my $guard = cf::lock_acquire "user_save:$path";
		1256
		1257	return if $pl->{deny_save};
		1258
		1259	aio_mkdir playerdir $pl, 0770;
		1260	$pl->{last_save} = $cf::RUNTIME;
		1261
		1262	$pl->save_pl ($path);
		1263	Coro::cede;
		1264	}
		1265
		1266	sub new($) {
		1267	my ($login) = @_;
		1268
		1269	my $self = create;
		1270
		1271	$self->ob->name ($login);
		1272	$self->{deny_save} = 1;
		1273
		1274	$cf::PLAYER{$login} = $self;
		1275
		1276	$self
		1277	}
		1278
		1279	=item $pl->quit_character
		1280
		1281	Nukes the player without looking back. If logged in, the connection will
		1282	be destroyed. May block for a long time.
		1283
		1284	=cut
		1285
		1286	sub quit_character {
		1287	my ($pl) = @_;
		1288
		1289	my $name = $pl->ob->name;
		1290
		1291	$pl->{deny_save} = 1;
		1292	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1293
		1294	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1295	$pl->deactivate;
		1296	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1297	$pl->ns->destroy if $pl->ns;
		1298
		1299	my $path = playerdir $pl;
		1300	my $temp = "$path~$cf::RUNTIME~deleting~";
		1301	aio_rename $path, $temp;
		1302	delete $cf::PLAYER{$pl->ob->name};
		1303	$pl->destroy;
		1304
		1305	my $prefix = qr<^~\Q$name\E/>;
		1306
		1307	# nuke player maps
		1308	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1309
		1310	IO::AIO::aio_rmtree $temp;
		1311	}
		1312
		1313	=item $pl->kick
		1314
		1315	Kicks a player out of the game. This destroys the connection.
		1316
		1317	=cut
		1318
		1319	sub kick {
		1320	my ($pl, $kicker) = @_;
		1321
		1322	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1323	$pl->killer ("kicked");
		1324	$pl->ns->destroy;
		1325	}
		1326
		1327	=item cf::player::list_logins
		1328
		1329	Returns am arrayref of all valid playernames in the system, can take a
		1330	while and may block, so not sync_job-capable, ever.
		1331
		1332	=cut
		1333
		1334	sub list_logins {
		1335	my $dirs = aio_readdir $PLAYERDIR
		1336	or return [];
		1337
		1338	my @logins;
		1339
		1340	for my $login (@$dirs) {
		1341	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1342	aio_read $fh, 0, 512, my $buf, 0 or next;
		1343	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1344
		1345	utf8::decode $login;
		1346	push @logins, $login;
		1347	}
		1348
		1349	\@logins
		1350	}
		1351
		1352	=item $player->maps
		1353
		1354	Returns an arrayref of map paths that are private for this
		1355	player. May block.
		1356
		1357	=cut
		1358
		1359	sub maps($) {
		1360	my ($pl) = @_;
		1361
		1362	$pl = ref $pl ? $pl->ob->name : $pl;
		1363
		1364	my $files = aio_readdir playerdir $pl
		1365	or return;
		1366
		1367	my @paths;
		1368
		1369	for (@$files) {
		1370	utf8::decode $_;
		1371	next if /\.(?:pl|pst)$/;
		1372	next unless /^$PATH_SEP/o;
		1373
		1374	push @paths, cf::map::normalise "~$pl/$_";
		1375	}
		1376
		1377	\@paths
		1378	}
		1379
		1380	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1381
		1382	Expand crossfire pod fragments into protocol xml.
		1383
		1384	=cut
		1385
		1386	sub expand_cfpod {
		1387	((my $self), (local $_)) = @_;
		1388
		1389	# escape & and <
		1390	s/&/&amp;/g;
		1391	s/(?<![BIUGH])</&lt;/g;
		1392
		1393	# this is buggy, it needs to properly take care of nested <'s
		1394
		1395	1 while
		1396	# replace B<>, I<>, U<> etc.
		1397	s/B<([^\>]*)>/<b>$1<\/b>/
		1398	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1399	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1400	# replace G<male|female> tags
		1401	|| s{G<([^>|]*)\|([^>]*)>}{
		1402	$self->gender ? $2 : $1
		1403	}ge
		1404	# replace H<hint text>
		1405	|| s{H<([^\>]*)>}
		1406	{
		1407	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1408	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1409	"")
		1410	[$self->{hintmode}]
		1411	}ge;
		1412
		1413	# create single paragraphs (very hackish)
		1414	s/(?<=\S)\n(?=\w)/ /g;
		1415
		1416	# compress some whitespace
		1417	s/\s+\n/\n/g; # ws line-ends
		1418	s/\n\n+/\n/g; # double lines
		1419	s/^\n+//; # beginning lines
		1420	s/\n+$//; # ending lines
		1421
		1422	$_
		1423	}
		1424
		1425	sub hintmode {
		1426	$_[0]{hintmode} = $_[1] if @_ > 1;
		1427	$_[0]{hintmode}
		1428	}
		1429
		1430	=item $player->ext_reply ($msgid, %msg)
		1431
		1432	Sends an ext reply to the player.
		1433
		1434	=cut
		1435
		1436	sub ext_reply($$%) {
		1437	my ($self, $id, %msg) = @_;
		1438
		1439	$msg{msgid} = $id;
		1440	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1441	}
		1442
		1443	=item $player->ext_event ($type, %msg)
		1444
		1445	Sends an ext event to the client.
		1446
		1447	=cut
		1448
		1449	sub ext_event($$%) {
		1450	my ($self, $type, %msg) = @_;
		1451
		1452	$self->ns->ext_event ($type, %msg);
		1453	}
		1454
		1455	=head3 cf::region
		1456
		1457	=over 4
		1458
		1459	=cut
		1460
		1461	package cf::region;
		1462
		1463	=item cf::region::find_by_path $path
		1464
		1465	Tries to decuce the likely region for a map knowing only its path.
		1466
		1467	=cut
		1468
		1469	sub find_by_path($) {
		1470	my ($path) = @_;
		1471
		1472	my ($match, $specificity);
		1473
		1474	for my $region (list) {
		1475	if ($region->match && $path =~ $region->match) {
		1476	($match, $specificity) = ($region, $region->specificity)
		1477	if $region->specificity > $specificity;
		1478	}
		1479	}
		1480
		1481	$match
		1482	}
		1483
		1484	=back
		1485
		1486	=head3 cf::map
		1487
		1488	=over 4
		1489
		1490	=cut
		1491
		1492	package cf::map;
		1493
		1494	use Fcntl;
		1495	use Coro::AIO;
		1496
		1497	use overload
		1498	'""' => \&as_string,
		1499	fallback => 1;
		1500
		1501	our $MAX_RESET = 3600;
		1502	our $DEFAULT_RESET = 3000;
		1503
		1504	sub generate_random_map {
		1505	my ($self, $rmp) = @_;
		1506	# mit "rum" bekleckern, nicht
		1507	$self->_create_random_map (
		1508	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1509	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1510	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1511	$rmp->{exit_on_final_map},
		1512	$rmp->{xsize}, $rmp->{ysize},
		1513	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1514	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1515	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1516	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1517	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1518	(cf::region::find $rmp->{region}), $rmp->{custom}
		1519	)
		1520	}
		1521
		1522	=item cf::map->register ($regex, $prio)
		1523
		1524	Register a handler for the map path matching the given regex at the
		1525	givne priority (higher is better, built-in handlers have priority 0, the
		1526	default).
		1527
		1528	=cut
		1529
		1530	sub register {
		1531	my (undef, $regex, $prio) = @_;
		1532	my $pkg = caller;
		1533
		1534	no strict;
		1535	push @{"$pkg\::ISA"}, __PACKAGE__;
		1536
		1537	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1538	}
		1539
		1540	# also paths starting with '/'
		1541	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1542
		1543	sub thawer_merge {
		1544	my ($self, $merge) = @_;
		1545
		1546	# we have to keep some variables in memory intact
		1547	local $self->{path};
		1548	local $self->{load_path};
		1549
		1550	$self->SUPER::thawer_merge ($merge);
		1551	}
		1552
		1553	sub normalise {
		1554	my ($path, $base) = @_;
		1555
		1556	$path = "$path"; # make sure its a string
		1557
		1558	$path =~ s/\.map$//;
		1559
		1560	# map plan:
		1561	#
		1562	# /! non-realised random map exit (special hack!)
		1563	# {... are special paths that are not being touched
		1564	# ?xxx/... are special absolute paths
		1565	# ?random/... random maps
		1566	# /... normal maps
		1567	# ~user/... per-player map of a specific user
		1568
		1569	$path =~ s/$PATH_SEP/\//go;
		1570
		1571	# treat it as relative path if it starts with
		1572	# something that looks reasonable
		1573	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1574	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1575
		1576	$base =~ s{[^/]+/?$}{};
		1577	$path = "$base/$path";
		1578	}
		1579
		1580	for ($path) {
		1581	redo if s{//}{/};
		1582	redo if s{/\.?/}{/};
		1583	redo if s{/[^/]+/\.\./}{/};
		1584	}
		1585
		1586	$path
		1587	}
		1588
		1589	sub new_from_path {
		1590	my (undef, $path, $base) = @_;
		1591
		1592	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1593
		1594	$path = normalise $path, $base;
		1595
		1596	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1597	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1598	my $self = bless cf::map::new, $pkg;
		1599	$self->{path} = $path; $self->path ($path);
		1600	$self->init; # pass $1 etc.
		1601	return $self;
		1602	}
		1603	}
		1604
		1605	Carp::carp "unable to resolve path '$path' (base '$base').";
		1606	()
		1607	}
		1608
		1609	sub init {
		1610	my ($self) = @_;
		1611
		1612	$self
		1613	}
		1614
		1615	sub as_string {
		1616	my ($self) = @_;
		1617
		1618	"$self->{path}"
		1619	}
		1620
		1621	# the displayed name, this is a one way mapping
		1622	sub visible_name {
		1623	&as_string
		1624	}
		1625
		1626	# the original (read-only) location
		1627	sub load_path {
		1628	my ($self) = @_;
		1629
		1630	"$MAPDIR/$self->{path}.map"
		1631	}
		1632
		1633	# the temporary/swap location
		1634	sub save_path {
		1635	my ($self) = @_;
		1636
		1637	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1638	"$TMPDIR/$path.map"
		1639	}
		1640
		1641	# the unique path, undef == no special unique path
		1642	sub uniq_path {
		1643	my ($self) = @_;
		1644
		1645	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1646	"$UNIQUEDIR/$path"
		1647	}
		1648
		1649	# and all this just because we cannot iterate over
		1650	# all maps in C++...
		1651	sub change_all_map_light {
		1652	my ($change) = @_;
		1653
		1654	$_->change_map_light ($change)
		1655	for grep $_->outdoor, values %cf::MAP;
		1656	}
		1657
		1658	sub decay_objects {
		1659	my ($self) = @_;
		1660
		1661	return if $self->{deny_reset};
		1662
		1663	$self->do_decay_objects;
		1664	}
		1665
		1666	sub unlink_save {
		1667	my ($self) = @_;
		1668
		1669	utf8::encode (my $save = $self->save_path);
		1670	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1671	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1672	}
		1673
		1674	sub load_header_from($) {
		1675	my ($self, $path) = @_;
		1676
		1677	utf8::encode $path;
		1678	#aio_open $path, O_RDONLY, 0
		1679	# or return;
		1680
		1681	$self->_load_header ($path)
		1682	or return;
		1683
		1684	$self->{load_path} = $path;
		1685
		1686	1
		1687	}
		1688
		1689	sub load_header_orig {
		1690	my ($self) = @_;
		1691
		1692	$self->load_header_from ($self->load_path)
		1693	}
		1694
		1695	sub load_header_temp {
		1696	my ($self) = @_;
		1697
		1698	$self->load_header_from ($self->save_path)
		1699	}
		1700
		1701	sub prepare_temp {
		1702	my ($self) = @_;
		1703
		1704	$self->last_access ((delete $self->{last_access})
		1705	|| $cf::RUNTIME); #d#
		1706	# safety
		1707	$self->{instantiate_time} = $cf::RUNTIME
		1708	if $self->{instantiate_time} > $cf::RUNTIME;
		1709	}
		1710
		1711	sub prepare_orig {
		1712	my ($self) = @_;
		1713
		1714	$self->{load_original} = 1;
		1715	$self->{instantiate_time} = $cf::RUNTIME;
		1716	$self->last_access ($cf::RUNTIME);
		1717	$self->instantiate;
		1718	}
		1719
		1720	sub load_header {
		1721	my ($self) = @_;
		1722
		1723	if ($self->load_header_temp) {
		1724	$self->prepare_temp;
		1725	} else {
		1726	$self->load_header_orig
		1727	or return;
		1728	$self->prepare_orig;
		1729	}
		1730
		1731	$self->{deny_reset} = 1
		1732	if $self->no_reset;
		1733
		1734	$self->default_region (cf::region::find_by_path $self->{path})
		1735	unless $self->default_region;
		1736
		1737	1
		1738	}
		1739
		1740	sub find;
		1741	sub find {
		1742	my ($path, $origin) = @_;
		1743
		1744	$path = normalise $path, $origin && $origin->path;
		1745
		1746	cf::lock_wait "map_find:$path";
		1747
		1748	$cf::MAP{$path} || do {
		1749	my $guard = cf::lock_acquire "map_find:$path";
		1750	my $map = new_from_path cf::map $path
		1751	or return;
		1752
		1753	$map->{last_save} = $cf::RUNTIME;
		1754
		1755	$map->load_header
		1756	or return;
		1757
		1758	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1759	# doing this can freeze the server in a sync job, obviously
		1760	#$cf::WAIT_FOR_TICK->wait;
		1761	$map->reset;
		1762	undef $guard;
		1763	return find $path;
		1764	}
		1765
		1766	$cf::MAP{$path} = $map
		1767	}
		1768	}
		1769
		1770	sub pre_load { }
		1771	sub post_load { }
		1772
		1773	sub load {
		1774	my ($self) = @_;
		1775
		1776	local $self->{deny_reset} = 1; # loading can take a long time
		1777
		1778	my $path = $self->{path};
		1779
		1780	{
		1781	my $guard = cf::lock_acquire "map_load:$path";
		1782
		1783	return if $self->in_memory != cf::MAP_SWAPPED;
		1784
		1785	$self->in_memory (cf::MAP_LOADING);
		1786
		1787	$self->alloc;
		1788
		1789	$self->pre_load;
		1790	Coro::cede;
		1791
		1792	$self->_load_objects ($self->{load_path}, 1)
		1793	or return;
		1794
		1795	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1796	if delete $self->{load_original};
		1797
		1798	if (my $uniq = $self->uniq_path) {
		1799	utf8::encode $uniq;
		1800	if (aio_open $uniq, O_RDONLY, 0) {
		1801	$self->clear_unique_items;
		1802	$self->_load_objects ($uniq, 0);
		1803	}
		1804	}
		1805
		1806	Coro::cede;
		1807	# now do the right thing for maps
		1808	$self->link_multipart_objects;
		1809	$self->difficulty ($self->estimate_difficulty)
		1810	unless $self->difficulty;
		1811	Coro::cede;
		1812
		1813	unless ($self->{deny_activate}) {
		1814	$self->decay_objects;
		1815	$self->fix_auto_apply;
		1816	$self->update_buttons;
		1817	Coro::cede;
		1818	$self->set_darkness_map;
		1819	Coro::cede;
		1820	$self->activate;
		1821	}
		1822
		1823	$self->in_memory (cf::MAP_IN_MEMORY);
		1824	}
		1825
		1826	$self->post_load;
		1827	}
		1828
		1829	sub customise_for {
		1830	my ($self, $ob) = @_;
		1831
		1832	return find "~" . $ob->name . "/" . $self->{path}
		1833	if $self->per_player;
		1834
		1835	# return find "?party/" . $ob->name . "/" . $self->{path}
		1836	# if $self->per_party;
		1837
		1838	$self
		1839	}
		1840
		1841	# find and load all maps in the 3x3 area around a map
		1842	sub load_diag {
761	my ($map) = @_;	1843	my ($map) = @_;
762		1844
763	my $path = $map->tmpname;	1845	my @diag; # diagonal neighbours
764	defined $path or return;
765		1846
766	unlink "$path.pst";	1847	for (0 .. 3) {
767	};	1848	my $neigh = $map->tile_path ($_)
		1849	or next;
		1850	$neigh = find $neigh, $map
		1851	or next;
		1852	$neigh->load;
768		1853
769	attach_to_maps prio => -10000, package => cf::mapsupport::;	1854	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1855	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1856	}
770		1857
771	#############################################################################	1858	for (@diag) {
772	# load/save perl data associated with player->ob objects	1859	my $neigh = find @$_
773		1860	or next;
774	sub all_objects(@) {	1861	$neigh->load;
775	@_, map all_objects ($_->inv), @_	1862	}
776	}	1863	}
777		1864
778	attach_to_players	1865	sub find_sync {
779	on_load => sub {	1866	my ($path, $origin) = @_;
780	my ($pl, $path) = @_;
781		1867
782	for my $o (all_objects $pl->ob) {	1868	cf::sync_job { find $path, $origin }
783	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1869	}
784	$o->set_ob_key_value ("_perl_data");
785		1870
786	%$o = %{ Storable::thaw pack "H*", $value };	1871	sub do_load_sync {
		1872	my ($map) = @_;
		1873
		1874	cf::sync_job { $map->load };
		1875	}
		1876
		1877	our %MAP_PREFETCH;
		1878	our $MAP_PREFETCHER = undef;
		1879
		1880	sub find_async {
		1881	my ($path, $origin) = @_;
		1882
		1883	$path = normalise $path, $origin && $origin->{path};
		1884
		1885	if (my $map = $cf::MAP{$path}) {
		1886	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1887	}
		1888
		1889	undef $MAP_PREFETCH{$path};
		1890	$MAP_PREFETCHER ||= cf::async {
		1891	while (%MAP_PREFETCH) {
		1892	for my $path (keys %MAP_PREFETCH) {
		1893	my $map = find $path
		1894	or next;
		1895	$map->load;
		1896
		1897	delete $MAP_PREFETCH{$path};
787	}	1898	}
788	}	1899	}
		1900	undef $MAP_PREFETCHER;
		1901	};
		1902	$MAP_PREFETCHER->prio (6);
		1903
		1904	()
		1905	}
		1906
		1907	sub save {
		1908	my ($self) = @_;
		1909
		1910	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1911
		1912	$self->{last_save} = $cf::RUNTIME;
		1913
		1914	return unless $self->dirty;
		1915
		1916	my $save = $self->save_path; utf8::encode $save;
		1917	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1918
		1919	$self->{load_path} = $save;
		1920
		1921	return if $self->{deny_save};
		1922
		1923	local $self->{last_access} = $self->last_access;#d#
		1924
		1925	cf::async {
		1926	$_->contr->save for $self->players;
		1927	};
		1928
		1929	if ($uniq) {
		1930	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1931	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1932	} else {
		1933	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
789	},	1934	}
790	;
791
792	#############################################################################
793	# core extensions - in perl
794
795	=item cf::player::exists $login
796
797	Returns true when the given account exists.
798
799	=cut
800
801	sub cf::player::exists($) {
802	cf::player::find $_[0]
803	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
804	}	1935	}
805		1936
		1937	sub swap_out {
		1938	my ($self) = @_;
		1939
		1940	# save first because save cedes
		1941	$self->save;
		1942
		1943	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1944
		1945	return if $self->players;
		1946	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1947	return if $self->{deny_save};
		1948
		1949	$self->clear;
		1950	$self->in_memory (cf::MAP_SWAPPED);
		1951	}
		1952
		1953	sub reset_at {
		1954	my ($self) = @_;
		1955
		1956	# TODO: safety, remove and allow resettable per-player maps
		1957	return 1e99 if $self->{deny_reset};
		1958
		1959	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1960	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1961
		1962	$time + $to
		1963	}
		1964
		1965	sub should_reset {
		1966	my ($self) = @_;
		1967
		1968	$self->reset_at <= $cf::RUNTIME
		1969	}
		1970
		1971	sub reset {
		1972	my ($self) = @_;
		1973
		1974	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1975
		1976	return if $self->players;
		1977
		1978	warn "resetting map ", $self->path;
		1979
		1980	$self->in_memory (cf::MAP_SWAPPED);
		1981
		1982	# need to save uniques path
		1983	unless ($self->{deny_save}) {
		1984	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1985
		1986	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1987	if $uniq;
		1988	}
		1989
		1990	delete $cf::MAP{$self->path};
		1991
		1992	$self->clear;
		1993
		1994	$_->clear_links_to ($self) for values %cf::MAP;
		1995
		1996	$self->unlink_save;
		1997	$self->destroy;
		1998	}
		1999
		2000	my $nuke_counter = "aaaa";
		2001
		2002	sub nuke {
		2003	my ($self) = @_;
		2004
		2005	delete $cf::MAP{$self->path};
		2006
		2007	$self->unlink_save;
		2008
		2009	bless $self, "cf::map";
		2010	delete $self->{deny_reset};
		2011	$self->{deny_save} = 1;
		2012	$self->reset_timeout (1);
		2013	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2014
		2015	$cf::MAP{$self->path} = $self;
		2016
		2017	$self->reset; # polite request, might not happen
		2018	}
		2019
		2020	=item $maps = cf::map::tmp_maps
		2021
		2022	Returns an arrayref with all map paths of currently instantiated and saved
		2023	maps. May block.
		2024
		2025	=cut
		2026
		2027	sub tmp_maps() {
		2028	[
		2029	map {
		2030	utf8::decode $_;
		2031	/\.map$/
		2032	? normalise $_
		2033	: ()
		2034	} @{ aio_readdir $TMPDIR or [] }
		2035	]
		2036	}
		2037
		2038	=item $maps = cf::map::random_maps
		2039
		2040	Returns an arrayref with all map paths of currently instantiated and saved
		2041	random maps. May block.
		2042
		2043	=cut
		2044
		2045	sub random_maps() {
		2046	[
		2047	map {
		2048	utf8::decode $_;
		2049	/\.map$/
		2050	? normalise "?random/$_"
		2051	: ()
		2052	} @{ aio_readdir $RANDOMDIR or [] }
		2053	]
		2054	}
		2055
		2056	=item cf::map::unique_maps
		2057
		2058	Returns an arrayref of paths of all shared maps that have
		2059	instantiated unique items. May block.
		2060
		2061	=cut
		2062
		2063	sub unique_maps() {
		2064	[
		2065	map {
		2066	utf8::decode $_;
		2067	/\.map$/
		2068	? normalise $_
		2069	: ()
		2070	} @{ aio_readdir $UNIQUEDIR or [] }
		2071	]
		2072	}
		2073
		2074	package cf;
		2075
		2076	=back
		2077
		2078	=head3 cf::object
		2079
		2080	=cut
		2081
		2082	package cf::object;
		2083
		2084	=over 4
		2085
		2086	=item $ob->inv_recursive
		2087
		2088	Returns the inventory of the object _and_ their inventories, recursively.
		2089
		2090	=cut
		2091
		2092	sub inv_recursive_;
		2093	sub inv_recursive_ {
		2094	map { $_, inv_recursive_ $_->inv } @_
		2095	}
		2096
		2097	sub inv_recursive {
		2098	inv_recursive_ inv $_[0]
		2099	}
		2100
		2101	package cf;
		2102
		2103	=back
		2104
		2105	=head3 cf::object::player
		2106
		2107	=over 4
		2108
806	=item $player->reply ($npc, $msg[, $flags])	2109	=item $player_object->reply ($npc, $msg[, $flags])
807		2110
808	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2111	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
809	can be C<undef>. Does the right thing when the player is currently in a	2112	can be C<undef>. Does the right thing when the player is currently in a
810	dialogue with the given NPC character.	2113	dialogue with the given NPC character.
811		2114
812	=cut	2115	=cut
813		2116
814	# rough implementation of a future "reply" method that works	2117	# rough implementation of a future "reply" method that works
815	# with dialog boxes.	2118	# with dialog boxes.
		2119	#TODO: the first argument must go, split into a $npc->reply_to ( method
816	sub cf::object::player::reply($$$;$) {	2120	sub cf::object::player::reply($$$;$) {
817	my ($self, $npc, $msg, $flags) = @_;	2121	my ($self, $npc, $msg, $flags) = @_;
818		2122
819	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2123	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
820		2124
821	if ($self->{record_replies}) {	2125	if ($self->{record_replies}) {
822	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2126	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2127
823	} else {	2128	} else {
		2129	my $pl = $self->contr;
		2130
		2131	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2132	my $diag = $pl->{npc_dialog};
		2133	$diag->{pl}->ext_reply (
		2134	$diag->{id},
		2135	msgtype => "reply",
		2136	msg => $diag->{pl}->expand_cfpod ($msg),
		2137	add_topics => []
		2138	);
		2139
		2140	} else {
824	$msg = $npc->name . " says: $msg" if $npc;	2141	$msg = $npc->name . " says: $msg" if $npc;
825	$self->message ($msg, $flags);	2142	$self->message ($msg, $flags);
		2143	}
		2144	}
		2145	}
		2146
		2147	=item $player_object->may ("access")
		2148
		2149	Returns wether the given player is authorized to access resource "access"
		2150	(e.g. "command_wizcast").
		2151
		2152	=cut
		2153
		2154	sub cf::object::player::may {
		2155	my ($self, $access) = @_;
		2156
		2157	$self->flag (cf::FLAG_WIZ) ||
		2158	(ref $cf::CFG{"may_$access"}
		2159	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2160	: $cf::CFG{"may_$access"})
		2161	}
		2162
		2163	=item $player_object->enter_link
		2164
		2165	Freezes the player and moves him/her to a special map (C<{link}>).
		2166
		2167	The player should be reasonably safe there for short amounts of time. You
		2168	I<MUST> call C<leave_link> as soon as possible, though.
		2169
		2170	Will never block.
		2171
		2172	=item $player_object->leave_link ($map, $x, $y)
		2173
		2174	Moves the player out of the special C<{link}> map onto the specified
		2175	map. If the map is not valid (or omitted), the player will be moved back
		2176	to the location he/she was before the call to C<enter_link>, or, if that
		2177	fails, to the emergency map position.
		2178
		2179	Might block.
		2180
		2181	=cut
		2182
		2183	sub link_map {
		2184	unless ($LINK_MAP) {
		2185	$LINK_MAP = cf::map::find "{link}"
		2186	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2187	$LINK_MAP->load;
		2188	}
		2189
		2190	$LINK_MAP
		2191	}
		2192
		2193	sub cf::object::player::enter_link {
		2194	my ($self) = @_;
		2195
		2196	$self->deactivate_recursive;
		2197
		2198	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2199
		2200	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2201	if $self->map && $self->map->{path} ne "{link}";
		2202
		2203	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2204	}
		2205
		2206	sub cf::object::player::leave_link {
		2207	my ($self, $map, $x, $y) = @_;
		2208
		2209	return unless $self->contr->active;
		2210
		2211	my $link_pos = delete $self->{_link_pos};
		2212
		2213	unless ($map) {
		2214	# restore original map position
		2215	($map, $x, $y) = @{ $link_pos || [] };
		2216	$map = cf::map::find $map;
		2217
		2218	unless ($map) {
		2219	($map, $x, $y) = @$EMERGENCY_POSITION;
		2220	$map = cf::map::find $map
		2221	or die "FATAL: cannot load emergency map\n";
		2222	}
		2223	}
		2224
		2225	($x, $y) = (-1, -1)
		2226	unless (defined $x) && (defined $y);
		2227
		2228	# use -1 or undef as default coordinates, not 0, 0
		2229	($x, $y) = ($map->enter_x, $map->enter_y)
		2230	if $x <=0 && $y <= 0;
		2231
		2232	$map->load;
		2233	$map->load_diag;
		2234
		2235	return unless $self->contr->active;
		2236	$self->activate_recursive;
		2237
		2238	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2239	$self->enter_map ($map, $x, $y);
		2240	}
		2241
		2242	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2243
		2244	Moves the player to the given map-path and coordinates by first freezing
		2245	her, loading and preparing them map, calling the provided $check callback
		2246	that has to return the map if sucecssful, and then unfreezes the player on
		2247	the new (success) or old (failed) map position.
		2248
		2249	=cut
		2250
		2251	our $GOTOGEN;
		2252
		2253	sub cf::object::player::goto {
		2254	my ($self, $path, $x, $y, $check) = @_;
		2255
		2256	# do generation counting so two concurrent goto's will be executed in-order
		2257	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2258
		2259	$self->enter_link;
		2260
		2261	(async {
		2262	my $map = eval {
		2263	my $map = cf::map::find $path;
		2264
		2265	if ($map) {
		2266	$map = $map->customise_for ($self);
		2267	$map = $check->($map) if $check && $map;
		2268	} else {
		2269	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2270	}
		2271
		2272	$map
		2273	};
		2274
		2275	if ($@) {
		2276	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2277	LOG llevError | logBacktrace, Carp::longmess $@;
		2278	}
		2279
		2280	if ($gen == $self->{_goto_generation}) {
		2281	delete $self->{_goto_generation};
		2282	$self->leave_link ($map, $x, $y);
		2283	}
		2284	})->prio (1);
		2285	}
		2286
		2287	=item $player_object->enter_exit ($exit_object)
		2288
		2289	=cut
		2290
		2291	sub parse_random_map_params {
		2292	my ($spec) = @_;
		2293
		2294	my $rmp = { # defaults
		2295	xsize => (cf::rndm 15, 40),
		2296	ysize => (cf::rndm 15, 40),
		2297	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2298	#layout => string,
826	}	2299	};
827	}
828		2300
829	=item $player->ext_reply ($msgid, $msgtype, %msg)	2301	for (split /\n/, $spec) {
		2302	my ($k, $v) = split /\s+/, $_, 2;
830		2303
		2304	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2305	}
		2306
		2307	$rmp
		2308	}
		2309
		2310	sub prepare_random_map {
		2311	my ($exit) = @_;
		2312
		2313	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2314
		2315	# all this does is basically replace the /! path by
		2316	# a new random map path (?random/...) with a seed
		2317	# that depends on the exit object
		2318
		2319	my $rmp = parse_random_map_params $exit->msg;
		2320
		2321	if ($exit->map) {
		2322	$rmp->{region} = $exit->region->name;
		2323	$rmp->{origin_map} = $exit->map->path;
		2324	$rmp->{origin_x} = $exit->x;
		2325	$rmp->{origin_y} = $exit->y;
		2326	}
		2327
		2328	$rmp->{random_seed} ||= $exit->random_seed;
		2329
		2330	my $data = cf::to_json $rmp;
		2331	my $md5 = Digest::MD5::md5_hex $data;
		2332	my $meta = "$RANDOMDIR/$md5.meta";
		2333
		2334	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2335	aio_write $fh, 0, (length $data), $data, 0;
		2336	undef $fh;
		2337	aio_rename "$meta~", $meta;
		2338
		2339	$exit->slaying ("?random/$md5");
		2340	$exit->msg (undef);
		2341	}
		2342	}
		2343
		2344	sub cf::object::player::enter_exit {
		2345	my ($self, $exit) = @_;
		2346
		2347	return unless $self->type == cf::PLAYER;
		2348
		2349	if ($exit->slaying eq "/!") {
		2350	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2351	# the problem is that $exit might not survive long enough
		2352	# so it needs to be done right now, right here
		2353	cf::sync_job { prepare_random_map $exit };
		2354	}
		2355
		2356	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2357	my $hp = $exit->stats->hp;
		2358	my $sp = $exit->stats->sp;
		2359
		2360	$self->enter_link;
		2361
		2362	# if exit is damned, update players death & WoR home-position
		2363	$self->contr->savebed ($slaying, $hp, $sp)
		2364	if $exit->flag (FLAG_DAMNED);
		2365
		2366	(async {
		2367	$self->deactivate_recursive; # just to be sure
		2368	unless (eval {
		2369	$self->goto ($slaying, $hp, $sp);
		2370
		2371	1;
		2372	}) {
		2373	$self->message ("Something went wrong deep within the crossfire server. "
		2374	. "I'll try to bring you back to the map you were before. "
		2375	. "Please report this to the dungeon master!",
		2376	cf::NDI_UNIQUE | cf::NDI_RED);
		2377
		2378	warn "ERROR in enter_exit: $@";
		2379	$self->leave_link;
		2380	}
		2381	})->prio (1);
		2382	}
		2383
		2384	=head3 cf::client
		2385
		2386	=over 4
		2387
		2388	=item $client->send_drawinfo ($text, $flags)
		2389
		2390	Sends a drawinfo packet to the client. Circumvents output buffering so
		2391	should not be used under normal circumstances.
		2392
		2393	=cut
		2394
		2395	sub cf::client::send_drawinfo {
		2396	my ($self, $text, $flags) = @_;
		2397
		2398	utf8::encode $text;
		2399	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2400	}
		2401
		2402	=item $client->send_msg ($color, $type, $msg, [extra...])
		2403
		2404	Send a drawinfo or msg packet to the client, formatting the msg for the
		2405	client if neccessary. C<$type> should be a string identifying the type of
		2406	the message, with C<log> being the default. If C<$color> is negative, suppress
		2407	the message unless the client supports the msg packet.
		2408
		2409	=cut
		2410
		2411	sub cf::client::send_msg {
		2412	my ($self, $color, $type, $msg, @extra) = @_;
		2413
		2414	$msg = $self->pl->expand_cfpod ($msg);
		2415
		2416	return unless @extra || length $msg;
		2417
		2418	if ($self->can_msg) {
		2419	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2420	} else {
		2421	# replace some tags by gcfclient-compatible ones
		2422	for ($msg) {
		2423	1 while
		2424	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2425	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2426	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2427	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2428	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2429	}
		2430
		2431	if ($color >= 0) {
		2432	if (0 && $msg =~ /\[/) {
		2433	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2434	} else {
		2435	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2436	$self->send_packet ("drawinfo $color $msg")
		2437	}
		2438	}
		2439	}
		2440	}
		2441
		2442	=item $client->ext_event ($type, %msg)
		2443
831	Sends an ext reply to the player.	2444	Sends an ext event to the client.
832		2445
833	=cut	2446	=cut
834		2447
835	sub cf::player::ext_reply($$$%) {	2448	sub cf::client::ext_event($$%) {
836	my ($self, $id, %msg) = @_;	2449	my ($self, $type, %msg) = @_;
837		2450
838	$msg{msgid} = $id;	2451	$msg{msgtype} = "event_$type";
839		2452	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
840	$self->send ("ext " . to_json \%msg);
841	}	2453	}
842		2454
843	#############################################################################	2455	=item $success = $client->query ($flags, "text", \&cb)
844	# map scripting support	2456
		2457	Queues a query to the client, calling the given callback with
		2458	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2459	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2460
		2461	Queries can fail, so check the return code. Or don't, as queries will
		2462	become reliable at some point in the future.
		2463
		2464	=cut
		2465
		2466	sub cf::client::query {
		2467	my ($self, $flags, $text, $cb) = @_;
		2468
		2469	return unless $self->state == ST_PLAYING
		2470	|| $self->state == ST_SETUP
		2471	|| $self->state == ST_CUSTOM;
		2472
		2473	$self->state (ST_CUSTOM);
		2474
		2475	utf8::encode $text;
		2476	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2477
		2478	$self->send_packet ($self->{query_queue}[0][0])
		2479	if @{ $self->{query_queue} } == 1;
		2480
		2481	1
		2482	}
		2483
		2484	cf::client->attach (
		2485	on_connect => sub {
		2486	my ($ns) = @_;
		2487
		2488	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2489	},
		2490	on_reply => sub {
		2491	my ($ns, $msg) = @_;
		2492
		2493	# this weird shuffling is so that direct followup queries
		2494	# get handled first
		2495	my $queue = delete $ns->{query_queue}
		2496	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2497
		2498	(shift @$queue)->[1]->($msg);
		2499	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2500
		2501	push @{ $ns->{query_queue} }, @$queue;
		2502
		2503	if (@{ $ns->{query_queue} } == @$queue) {
		2504	if (@$queue) {
		2505	$ns->send_packet ($ns->{query_queue}[0][0]);
		2506	} else {
		2507	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2508	}
		2509	}
		2510	},
		2511	on_exticmd => sub {
		2512	my ($ns, $buf) = @_;
		2513
		2514	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2515
		2516	if (ref $msg) {
		2517	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2518	if (my %reply = $cb->($ns, $msg)) {
		2519	$reply{msgid} = $msg->{msgid};
		2520	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2521	}
		2522	}
		2523	} else {
		2524	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2525	}
		2526
		2527	cf::override;
		2528	},
		2529	);
		2530
		2531	=item $client->async (\&cb)
		2532
		2533	Create a new coroutine, running the specified callback. The coroutine will
		2534	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2535	or loss of connection).
		2536
		2537	=cut
		2538
		2539	sub cf::client::async {
		2540	my ($self, $cb) = @_;
		2541
		2542	my $coro = &Coro::async ($cb);
		2543
		2544	$coro->on_destroy (sub {
		2545	delete $self->{_coro}{$coro+0};
		2546	});
		2547
		2548	$self->{_coro}{$coro+0} = $coro;
		2549
		2550	$coro
		2551	}
		2552
		2553	cf::client->attach (
		2554	on_destroy => sub {
		2555	my ($ns) = @_;
		2556
		2557	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2558	},
		2559	);
		2560
		2561	=back
		2562
		2563
		2564	=head2 SAFE SCRIPTING
		2565
		2566	Functions that provide a safe environment to compile and execute
		2567	snippets of perl code without them endangering the safety of the server
		2568	itself. Looping constructs, I/O operators and other built-in functionality
		2569	is not available in the safe scripting environment, and the number of
		2570	functions and methods that can be called is greatly reduced.
		2571
		2572	=cut
845		2573
846	our $safe = new Safe "safe";	2574	our $safe = new Safe "safe";
847	our $safe_hole = new Safe::Hole;	2575	our $safe_hole = new Safe::Hole;
848		2576
849	$SIG{FPE} = 'IGNORE';	2577	$SIG{FPE} = 'IGNORE';
850		2578
851	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2579	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
852		2580
853	# here we export the classes and methods available to script code	2581	# here we export the classes and methods available to script code
854		2582
		2583	=pod
		2584
		2585	The following functions and methods are available within a safe environment:
		2586
		2587	cf::object
		2588	contr pay_amount pay_player map x y force_find force_add
		2589	insert remove
		2590
		2591	cf::object::player
		2592	player
		2593
		2594	cf::player
		2595	peaceful
		2596
		2597	cf::map
		2598	trigger
		2599
		2600	=cut
		2601
855	for (	2602	for (
856	["cf::object" => qw(contr pay_amount pay_player)],	2603	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2604	insert remove)],
857	["cf::object::player" => qw(player)],	2605	["cf::object::player" => qw(player)],
858	["cf::player" => qw(peaceful)],	2606	["cf::player" => qw(peaceful)],
		2607	["cf::map" => qw(trigger)],
859	) {	2608	) {
860	no strict 'refs';	2609	no strict 'refs';
861	my ($pkg, @funs) = @$_;	2610	my ($pkg, @funs) = @$_;
862	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2611	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
863	for @funs;	2612	for @funs;
864	}	2613	}
		2614
		2615	=over 4
		2616
		2617	=item @retval = safe_eval $code, [var => value, ...]
		2618
		2619	Compiled and executes the given perl code snippet. additional var/value
		2620	pairs result in temporary local (my) scalar variables of the given name
		2621	that are available in the code snippet. Example:
		2622
		2623	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2624
		2625	=cut
865		2626
866	sub safe_eval($;@) {	2627	sub safe_eval($;@) {
867	my ($code, %vars) = @_;	2628	my ($code, %vars) = @_;
868		2629
869	my $qcode = $code;	2630	my $qcode = $code;
…		…
892	}	2653	}
893		2654
894	wantarray ? @res : $res[0]	2655	wantarray ? @res : $res[0]
895	}	2656	}
896		2657
		2658	=item cf::register_script_function $function => $cb
		2659
		2660	Register a function that can be called from within map/npc scripts. The
		2661	function should be reasonably secure and should be put into a package name
		2662	like the extension.
		2663
		2664	Example: register a function that gets called whenever a map script calls
		2665	C<rent::overview>, as used by the C<rent> extension.
		2666
		2667	cf::register_script_function "rent::overview" => sub {
		2668	...
		2669	};
		2670
		2671	=cut
		2672
897	sub register_script_function {	2673	sub register_script_function {
898	my ($fun, $cb) = @_;	2674	my ($fun, $cb) = @_;
899		2675
900	no strict 'refs';	2676	no strict 'refs';
901	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2677	*{"safe::$fun"} = $safe_hole->wrap ($cb);
902	}	2678	}
903		2679
		2680	=back
		2681
		2682	=cut
		2683
904	#############################################################################	2684	#############################################################################
905	# the server's main()	2685	# the server's init and main functions
		2686
		2687	sub load_facedata($) {
		2688	my ($path) = @_;
		2689
		2690	warn "loading facedata from $path\n";
		2691
		2692	my $facedata;
		2693	0 < aio_load $path, $facedata
		2694	or die "$path: $!";
		2695
		2696	$facedata = Coro::Storable::thaw $facedata;
		2697
		2698	$facedata->{version} == 2
		2699	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2700
		2701	{
		2702	my $faces = $facedata->{faceinfo};
		2703
		2704	while (my ($face, $info) = each %$faces) {
		2705	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2706	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2707	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2708	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2709	Coro::cede;
		2710	}
		2711
		2712	while (my ($face, $info) = each %$faces) {
		2713	next unless $info->{smooth};
		2714	my $idx = cf::face::find $face
		2715	or next;
		2716	if (my $smooth = cf::face::find $info->{smooth}) {
		2717	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2718	} else {
		2719	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2720	}
		2721	Coro::cede;
		2722	}
		2723	}
		2724
		2725	{
		2726	my $anims = $facedata->{animinfo};
		2727
		2728	while (my ($anim, $info) = each %$anims) {
		2729	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2730	Coro::cede;
		2731	}
		2732
		2733	cf::anim::invalidate_all; # d'oh
		2734	}
		2735
		2736	1
		2737	}
		2738
		2739	sub reload_regions {
		2740	load_resource_file "$MAPDIR/regions"
		2741	or die "unable to load regions file\n";
		2742	}
		2743
		2744	sub reload_facedata {
		2745	load_facedata "$DATADIR/facedata"
		2746	or die "unable to load facedata\n";
		2747	}
		2748
		2749	sub reload_archetypes {
		2750	load_resource_file "$DATADIR/archetypes"
		2751	or die "unable to load archetypes\n";
		2752	#d# NEED to laod twice to resolve forward references
		2753	# this really needs to be done in an extra post-pass
		2754	# (which needs to be synchronous, so solve it differently)
		2755	load_resource_file "$DATADIR/archetypes"
		2756	or die "unable to load archetypes\n";
		2757	}
		2758
		2759	sub reload_treasures {
		2760	load_resource_file "$DATADIR/treasures"
		2761	or die "unable to load treasurelists\n";
		2762	}
		2763
		2764	sub reload_resources {
		2765	warn "reloading resource files...\n";
		2766
		2767	reload_regions;
		2768	reload_facedata;
		2769	#reload_archetypes;#d#
		2770	reload_archetypes;
		2771	reload_treasures;
		2772
		2773	warn "finished reloading resource files\n";
		2774	}
		2775
		2776	sub init {
		2777	reload_resources;
		2778	}
		2779
		2780	sub cfg_load {
		2781	open my $fh, "<:utf8", "$CONFDIR/config"
		2782	or return;
		2783
		2784	local $/;
		2785	*CFG = YAML::Syck::Load <$fh>;
		2786
		2787	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2788
		2789	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2790	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2791
		2792	if (exists $CFG{mlockall}) {
		2793	eval {
		2794	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2795	and die "WARNING: m(un)lockall failed: $!\n";
		2796	};
		2797	warn $@ if $@;
		2798	}
		2799	}
906		2800
907	sub main {	2801	sub main {
		2802	# we must not ever block the main coroutine
		2803	local $Coro::idle = sub {
		2804	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2805	(async {
		2806	Event::one_event;
		2807	})->prio (Coro::PRIO_MAX);
		2808	};
		2809
		2810	cfg_load;
		2811	db_init;
		2812	load_extensions;
		2813
		2814	$TICK_WATCHER->start;
908	Event::loop;	2815	Event::loop;
909	}	2816	}
910		2817
911	#############################################################################	2818	#############################################################################
912	# initialisation	2819	# initialisation and cleanup
913		2820
914	register "<global>", __PACKAGE__;	2821	# install some emergency cleanup handlers
		2822	BEGIN {
		2823	for my $signal (qw(INT HUP TERM)) {
		2824	Event->signal (
		2825	reentrant => 0,
		2826	data => WF_AUTOCANCEL,
		2827	signal => $signal,
		2828	prio => 0,
		2829	cb => sub {
		2830	cf::cleanup "SIG$signal";
		2831	},
		2832	);
		2833	}
		2834	}
		2835
		2836	sub write_runtime {
		2837	my $runtime = "$LOCALDIR/runtime";
		2838
		2839	# first touch the runtime file to show we are still running:
		2840	# the fsync below can take a very very long time.
		2841
		2842	IO::AIO::aio_utime $runtime, undef, undef;
		2843
		2844	my $guard = cf::lock_acquire "write_runtime";
		2845
		2846	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2847	or return;
		2848
		2849	my $value = $cf::RUNTIME + 90 + 10;
		2850	# 10 is the runtime save interval, for a monotonic clock
		2851	# 60 allows for the watchdog to kill the server.
		2852
		2853	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2854	and return;
		2855
		2856	# always fsync - this file is important
		2857	aio_fsync $fh
		2858	and return;
		2859
		2860	# touch it again to show we are up-to-date
		2861	aio_utime $fh, undef, undef;
		2862
		2863	close $fh
		2864	or return;
		2865
		2866	aio_rename "$runtime~", $runtime
		2867	and return;
		2868
		2869	warn "runtime file written.\n";
		2870
		2871	1
		2872	}
		2873
		2874	sub emergency_save() {
		2875	my $freeze_guard = cf::freeze_mainloop;
		2876
		2877	warn "enter emergency perl save\n";
		2878
		2879	cf::sync_job {
		2880	# use a peculiar iteration method to avoid tripping on perl
		2881	# refcount bugs in for. also avoids problems with players
		2882	# and maps saved/destroyed asynchronously.
		2883	warn "begin emergency player save\n";
		2884	for my $login (keys %cf::PLAYER) {
		2885	my $pl = $cf::PLAYER{$login} or next;
		2886	$pl->valid or next;
		2887	$pl->save;
		2888	}
		2889	warn "end emergency player save\n";
		2890
		2891	warn "begin emergency map save\n";
		2892	for my $path (keys %cf::MAP) {
		2893	my $map = $cf::MAP{$path} or next;
		2894	$map->valid or next;
		2895	$map->save;
		2896	}
		2897	warn "end emergency map save\n";
		2898
		2899	warn "begin emergency database checkpoint\n";
		2900	BDB::db_env_txn_checkpoint $DB_ENV;
		2901	warn "end emergency database checkpoint\n";
		2902	};
		2903
		2904	warn "leave emergency perl save\n";
		2905	}
		2906
		2907	sub post_cleanup {
		2908	my ($make_core) = @_;
		2909
		2910	warn Carp::longmess "post_cleanup backtrace"
		2911	if $make_core;
		2912	}
		2913
		2914	sub do_reload_perl() {
		2915	# can/must only be called in main
		2916	if ($Coro::current != $Coro::main) {
		2917	warn "can only reload from main coroutine";
		2918	return;
		2919	}
		2920
		2921	warn "reloading...";
		2922
		2923	warn "entering sync_job";
		2924
		2925	cf::sync_job {
		2926	cf::write_runtime; # external watchdog should not bark
		2927	cf::emergency_save;
		2928	cf::write_runtime; # external watchdog should not bark
		2929
		2930	warn "syncing database to disk";
		2931	BDB::db_env_txn_checkpoint $DB_ENV;
		2932
		2933	# if anything goes wrong in here, we should simply crash as we already saved
		2934
		2935	warn "cancelling all WF_AUTOCANCEL watchers";
		2936	for (Event::all_watchers) {
		2937	$_->cancel if $_->data & WF_AUTOCANCEL;
		2938	}
		2939
		2940	warn "flushing outstanding aio requests";
		2941	for (;;) {
		2942	BDB::flush;
		2943	IO::AIO::flush;
		2944	Coro::cede;
		2945	last unless IO::AIO::nreqs || BDB::nreqs;
		2946	warn "iterate...";
		2947	}
		2948
		2949	++$RELOAD;
		2950
		2951	warn "cancelling all extension coros";
		2952	$_->cancel for values %EXT_CORO;
		2953	%EXT_CORO = ();
		2954
		2955	warn "removing commands";
		2956	%COMMAND = ();
		2957
		2958	warn "removing ext/exti commands";
		2959	%EXTCMD = ();
		2960	%EXTICMD = ();
		2961
		2962	warn "unloading/nuking all extensions";
		2963	for my $pkg (@EXTS) {
		2964	warn "... unloading $pkg";
		2965
		2966	if (my $cb = $pkg->can ("unload")) {
		2967	eval {
		2968	$cb->($pkg);
		2969	1
		2970	} or warn "$pkg unloaded, but with errors: $@";
		2971	}
		2972
		2973	warn "... nuking $pkg";
		2974	Symbol::delete_package $pkg;
		2975	}
		2976
		2977	warn "unloading all perl modules loaded from $LIBDIR";
		2978	while (my ($k, $v) = each %INC) {
		2979	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2980
		2981	warn "... unloading $k";
		2982	delete $INC{$k};
		2983
		2984	$k =~ s/\.pm$//;
		2985	$k =~ s/\//::/g;
		2986
		2987	if (my $cb = $k->can ("unload_module")) {
		2988	$cb->();
		2989	}
		2990
		2991	Symbol::delete_package $k;
		2992	}
		2993
		2994	warn "getting rid of safe::, as good as possible";
		2995	Symbol::delete_package "safe::$_"
		2996	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2997
		2998	warn "unloading cf.pm \"a bit\"";
		2999	delete $INC{"cf.pm"};
		3000	delete $INC{"cf/pod.pm"};
		3001
		3002	# don't, removes xs symbols, too,
		3003	# and global variables created in xs
		3004	#Symbol::delete_package __PACKAGE__;
		3005
		3006	warn "unload completed, starting to reload now";
		3007
		3008	warn "reloading cf.pm";
		3009	require cf;
		3010	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3011
		3012	warn "loading config and database again";
		3013	cf::cfg_load;
		3014
		3015	warn "loading extensions";
		3016	cf::load_extensions;
		3017
		3018	warn "reattaching attachments to objects/players";
		3019	_global_reattach; # objects, sockets
		3020	warn "reattaching attachments to maps";
		3021	reattach $_ for values %MAP;
		3022	warn "reattaching attachments to players";
		3023	reattach $_ for values %PLAYER;
		3024
		3025	warn "leaving sync_job";
		3026
		3027	1
		3028	} or do {
		3029	warn $@;
		3030	warn "error while reloading, exiting.";
		3031	exit 1;
		3032	};
		3033
		3034	warn "reloaded";
		3035	};
		3036
		3037	our $RELOAD_WATCHER; # used only during reload
		3038
		3039	sub reload_perl() {
		3040	# doing reload synchronously and two reloads happen back-to-back,
		3041	# coro crashes during coro_state_free->destroy here.
		3042
		3043	$RELOAD_WATCHER ||= Event->timer (
		3044	reentrant => 0,
		3045	after => 0,
		3046	data => WF_AUTOCANCEL,
		3047	cb => sub {
		3048	do_reload_perl;
		3049	undef $RELOAD_WATCHER;
		3050	},
		3051	);
		3052	}
		3053
		3054	register_command "reload" => sub {
		3055	my ($who, $arg) = @_;
		3056
		3057	if ($who->flag (FLAG_WIZ)) {
		3058	$who->message ("reloading server.");
		3059	async { reload_perl };
		3060	}
		3061	};
915		3062
916	unshift @INC, $LIBDIR;	3063	unshift @INC, $LIBDIR;
917		3064
918	load_extensions;	3065	my $bug_warning = 0;
919		3066
		3067	our @WAIT_FOR_TICK;
		3068	our @WAIT_FOR_TICK_BEGIN;
		3069
		3070	sub wait_for_tick {
		3071	return unless $TICK_WATCHER->is_active;
		3072	return if $Coro::current == $Coro::main;
		3073
		3074	my $signal = new Coro::Signal;
		3075	push @WAIT_FOR_TICK, $signal;
		3076	$signal->wait;
		3077	}
		3078
		3079	sub wait_for_tick_begin {
		3080	return unless $TICK_WATCHER->is_active;
		3081	return if $Coro::current == $Coro::main;
		3082
		3083	my $signal = new Coro::Signal;
		3084	push @WAIT_FOR_TICK_BEGIN, $signal;
		3085	$signal->wait;
		3086	}
		3087
		3088	my $min = 1e6;#d#
		3089	my $avg = 10;
920	$TICK_WATCHER = Event->timer (	3090	$TICK_WATCHER = Event->timer (
		3091	reentrant => 0,
		3092	parked => 1,
921	prio => 1,	3093	prio => 0,
922	at => $NEXT_TICK || 1,	3094	at => $NEXT_TICK || $TICK,
		3095	data => WF_AUTOCANCEL,
923	cb => sub {	3096	cb => sub {
		3097	if ($Coro::current != $Coro::main) {
		3098	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3099	unless ++$bug_warning > 10;
		3100	return;
		3101	}
		3102
		3103	$NOW = $tick_start = Event::time;
		3104
924	cf::server_tick; # one server iteration	3105	cf::server_tick; # one server iteration
925		3106
		3107	0 && sync_job {#d#
		3108	for(1..10) {
926	my $NOW = Event::time;	3109	my $t = Event::time;
		3110	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3111	or die;
		3112
		3113	$map->width (50);
		3114	$map->height (50);
		3115	$map->alloc;
		3116	$map->_load_objects ("/tmp/x.map", 1);
		3117	my $t = Event::time - $t;
		3118
		3119	#next unless $t < 0.0013;#d#
		3120	if ($t < $min) {
		3121	$min = $t;
		3122	}
		3123	$avg = $avg * 0.99 + $t * 0.01;
		3124	}
		3125	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3126	exit 0;
		3127	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3128	};
		3129
		3130	$RUNTIME += $TICK;
927	$NEXT_TICK += $TICK;	3131	$NEXT_TICK += $TICK;
928		3132
		3133	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3134	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3135	Coro::async_pool {
		3136	write_runtime
		3137	or warn "ERROR: unable to write runtime file: $!";
		3138	};
		3139	}
		3140
		3141	# my $AFTER = Event::time;
		3142	# warn $AFTER - $NOW;#d#
		3143
		3144	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3145	$sig->send;
		3146	}
		3147	while (my $sig = shift @WAIT_FOR_TICK) {
		3148	$sig->send;
		3149	}
		3150
		3151	$NOW = Event::time;
		3152
929	# if we are delayed by four ticks, skip them all	3153	# if we are delayed by four ticks or more, skip them all
930	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3154	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
931		3155
932	$TICK_WATCHER->at ($NEXT_TICK);	3156	$TICK_WATCHER->at ($NEXT_TICK);
933	$TICK_WATCHER->start;	3157	$TICK_WATCHER->start;
		3158
		3159	$LOAD = ($NOW - $tick_start) / $TICK;
		3160	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3161
		3162	_post_tick;
		3163
		3164
934	},	3165	},
935	);	3166	);
936		3167
937	_reload_2;	3168	{
		3169	BDB::max_poll_time $TICK * 0.1;
		3170	$BDB_POLL_WATCHER = Event->io (
		3171	reentrant => 0,
		3172	fd => BDB::poll_fileno,
		3173	poll => 'r',
		3174	prio => 0,
		3175	data => WF_AUTOCANCEL,
		3176	cb => \&BDB::poll_cb,
		3177	);
		3178	BDB::min_parallel 8;
		3179
		3180	BDB::set_sync_prepare {
		3181	my $status;
		3182	my $current = $Coro::current;
		3183	(
		3184	sub {
		3185	$status = $!;
		3186	$current->ready; undef $current;
		3187	},
		3188	sub {
		3189	Coro::schedule while defined $current;
		3190	$! = $status;
		3191	},
		3192	)
		3193	};
		3194
		3195	unless ($DB_ENV) {
		3196	$DB_ENV = BDB::db_env_create;
		3197
		3198	cf::sync_job {
		3199	eval {
		3200	BDB::db_env_open
		3201	$DB_ENV,
		3202	$BDBDIR,
		3203	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3204	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3205	0666;
		3206
		3207	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3208
		3209	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3210	$DB_ENV->set_lk_detect;
		3211	};
		3212
		3213	cf::cleanup "db_env_open(db): $@" if $@;
		3214	};
		3215	}
		3216	}
		3217
		3218	{
		3219	IO::AIO::min_parallel 8;
		3220
		3221	undef $Coro::AIO::WATCHER;
		3222	IO::AIO::max_poll_time $TICK * 0.1;
		3223	$AIO_POLL_WATCHER = Event->io (
		3224	reentrant => 0,
		3225	data => WF_AUTOCANCEL,
		3226	fd => IO::AIO::poll_fileno,
		3227	poll => 'r',
		3228	prio => 6,
		3229	cb => \&IO::AIO::poll_cb,
		3230	);
		3231	}
		3232
		3233	my $_log_backtrace;
		3234
		3235	sub _log_backtrace {
		3236	my ($msg, @addr) = @_;
		3237
		3238	$msg =~ s/\n//;
		3239
		3240	# limit the # of concurrent backtraces
		3241	if ($_log_backtrace < 2) {
		3242	++$_log_backtrace;
		3243	async {
		3244	my @bt = fork_call {
		3245	@addr = map { sprintf "%x", $_ } @addr;
		3246	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3247	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3248	or die "addr2line: $!";
		3249
		3250	my @funcs;
		3251	my @res = <$fh>;
		3252	chomp for @res;
		3253	while (@res) {
		3254	my ($func, $line) = splice @res, 0, 2, ();
		3255	push @funcs, "[$func] $line";
		3256	}
		3257
		3258	@funcs
		3259	};
		3260
		3261	LOG llevInfo, "[ABT] $msg\n";
		3262	LOG llevInfo, "[ABT] $_\n" for @bt;
		3263	--$_log_backtrace;
		3264	};
		3265	} else {
		3266	LOG llevInfo, "[ABT] $msg\n";
		3267	LOG llevInfo, "[ABT] [suppressed]\n";
		3268	}
		3269	}
		3270
		3271	# load additional modules
		3272	use cf::pod;
		3273
		3274	END { cf::emergency_save }
938		3275
939	1	3276	1
940		3277

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