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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.92 by root, Thu Dec 21 06:42:28 2006 UTC vs.
Revision 1.340 by root, Fri Aug 24 00:40:31 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
10	use IO::AIO ();	15	use Coro 3.64 ();
		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	use Coro::Util ();
		25
		26	use JSON::XS 1.4 ();
		27	use BDB ();
		28	use Data::Dumper;
		29	use Digest::MD5;
		30	use Fcntl;
11	use YAML::Syck ();	31	use YAML::Syck ();
		32	use IO::AIO 2.32 ();
12	use Time::HiRes;	33	use Time::HiRes;
13	use Event;	34	use Compress::LZF;
		35	use Digest::MD5 ();
		36
		37	# configure various modules to our taste
		38	#
		39	$Storable::canonical = 1; # reduce rsync transfers
		40	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		41	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		42
14	$Event::Eval = 1; # no idea why this is required, but it is	43	$Event::Eval = 1; # no idea why this is required, but it is
15		44
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	45	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	46	$YAML::Syck::ImplicitUnicode = 1;
18		47
19	use strict;	48	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		49
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	50	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		51
23	our %COMMAND = ();	52	our %COMMAND = ();
24	our %COMMAND_TIME = ();	53	our %COMMAND_TIME = ();
		54
		55	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	56	our %EXTCMD = ();
		57	our %EXTICMD = ();
		58	our %EXT_CORO = (); # coroutines bound to extensions
		59	our %EXT_MAP = (); # pluggable maps
26		60
27	_init_vars;	61	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	62	our @EVENT;
30	our $LIBDIR = datadir . "/ext";
31		63
32	our $TICK = MAX_TIME * 1e-6;	64	our $CONFDIR = confdir;
		65	our $DATADIR = datadir;
		66	our $LIBDIR = "$DATADIR/ext";
		67	our $PODDIR = "$DATADIR/pod";
		68	our $MAPDIR = "$DATADIR/" . mapdir;
		69	our $LOCALDIR = localdir;
		70	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		71	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		72	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		73	our $RANDOMDIR = "$LOCALDIR/random";
		74	our $BDBDIR = "$LOCALDIR/db";
		75
		76	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
33	our $TICK_WATCHER;	77	our $TICK_WATCHER;
		78	our $AIO_POLL_WATCHER;
		79	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	80	our $NEXT_TICK;
		81	our $NOW;
		82	our $USE_FSYNC = 1; # use fsync to write maps - default off
		83
		84	our $BDB_POLL_WATCHER;
		85	our $DB_ENV;
35		86
36	our %CFG;	87	our %CFG;
37		88
38	our $UPTIME; $UPTIME ||= time;	89	our $UPTIME; $UPTIME ||= time;
		90	our $RUNTIME;
		91
		92	our %PLAYER; # all users
		93	our %MAP; # all maps
		94	our $LINK_MAP; # the special {link} map, which is always available
		95
		96	# used to convert map paths into valid unix filenames by replacing / by ∕
		97	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		98
		99	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		100	our $LOADAVG; # same thing, but with alpha-smoothing
		101	our $tick_start; # for load detecting purposes
		102
		103	binmode STDOUT;
		104	binmode STDERR;
		105
		106	# read virtual server time, if available
		107	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		108	open my $fh, "<", "$LOCALDIR/runtime"
		109	or die "unable to read runtime file: $!";
		110	$RUNTIME = <$fh> + 0.;
		111	}
		112
		113	mkdir $_
		114	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		115
		116	our $EMERGENCY_POSITION;
		117
		118	sub cf::map::normalise;
39		119
40	#############################################################################	120	#############################################################################
41		121
42	=head2 GLOBAL VARIABLES	122	=head2 GLOBAL VARIABLES
43		123
…		…
45		125
46	=item $cf::UPTIME	126	=item $cf::UPTIME
47		127
48	The timestamp of the server start (so not actually an uptime).	128	The timestamp of the server start (so not actually an uptime).
49		129
50	=item $cf::LIBDIR	130	=item $cf::RUNTIME
51		131
52	The perl library directory, where extensions and cf-specific modules can	132	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	133	every server tick.
		134
		135	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		136	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		137	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		138
		139	Various directories - "/etc", read-only install directory, perl-library
		140	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		141	unique-items directory, player file directory, random maps directory and
		142	database environment.
		143
		144	=item $cf::NOW
		145
		146	The time of the last (current) server tick.
54		147
55	=item $cf::TICK	148	=item $cf::TICK
56		149
57	The interval between server ticks, in seconds.	150	The interval between server ticks, in seconds.
		151
		152	=item $cf::LOADAVG
		153
		154	The current CPU load on the server (alpha-smoothed), as a value between 0
		155	(none) and 1 (overloaded), indicating how much time is spent on processing
		156	objects per tick. Healthy values are < 0.5.
		157
		158	=item $cf::LOAD
		159
		160	The raw value load value from the last tick.
58		161
59	=item %cf::CFG	162	=item %cf::CFG
60		163
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	164	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	165	from wherever your confdir points to.
		166
		167	=item cf::wait_for_tick, cf::wait_for_tick_begin
		168
		169	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		170	returns directly I<after> the tick processing (and consequently, can only wake one process
		171	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		172
		173	=item @cf::INVOKE_RESULTS
		174
		175	This array contains the results of the last C<invoke ()> call. When
		176	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		177	that call.
63		178
64	=back	179	=back
65		180
66	=cut	181	=cut
67		182
68	BEGIN {	183	BEGIN {
69	*CORE::GLOBAL::warn = sub {	184	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	185	my $msg = join "", @_;
		186
71	$msg .= "\n"	187	$msg .= "\n"
72	unless $msg =~ /\n$/;	188	unless $msg =~ /\n$/;
73		189
74	print STDERR "cfperl: $msg";	190	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		191
		192	utf8::encode $msg;
75	LOG llevError, "cfperl: $msg";	193	LOG llevError, $msg;
76	};	194	};
77	}	195	}
78		196
		197	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		198	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		199	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		200	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		201	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		202	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	203	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
80		204
81	# we bless all objects into (empty) derived classes to force a method lookup	205	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	206	# within the Safe compartment.
83	for my $pkg (qw(	207	for my $pkg (qw(
		208	cf::global cf::attachable
84	cf::object cf::object::player	209	cf::object cf::object::player
85	cf::client cf::player	210	cf::client cf::player
86	cf::arch cf::living	211	cf::arch cf::living
87	cf::map cf::party cf::region	212	cf::map cf::party cf::region
88	)) {	213	)) {
…		…
92		217
93	$Event::DIED = sub {	218	$Event::DIED = sub {
94	warn "error in event callback: @_";	219	warn "error in event callback: @_";
95	};	220	};
96		221
97	my %ext_pkg;	222	#############################################################################
98	my @exts;
99	my @hook;
100		223
101	=head2 UTILITY FUNCTIONS	224	=head2 UTILITY FUNCTIONS
102		225
103	=over 4	226	=over 4
104		227
105	=cut	228	=item dumpval $ref
106		229
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	230	=cut
		231
		232	sub dumpval {
		233	eval {
		234	local $SIG{__DIE__};
		235	my $d;
		236	if (1) {
		237	$d = new Data::Dumper([$_[0]], ["*var"]);
		238	$d->Terse(1);
		239	$d->Indent(2);
		240	$d->Quotekeys(0);
		241	$d->Useqq(1);
		242	#$d->Bless(...);
		243	$d->Seen($_[1]) if @_ > 1;
		244	$d = $d->Dump();
		245	}
		246	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		247	$d
		248	} || "[unable to dump $_[0]: '$@']";
		249	}
108		250
109	=item $ref = cf::from_json $json	251	=item $ref = cf::from_json $json
110		252
111	Converts a JSON string into the corresponding perl data structure.	253	Converts a JSON string into the corresponding perl data structure.
112		254
113	=cut
114
115	sub from_json($) {
116	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
117	JSON::Syck::Load $_[0]
118	}
119
120	=item $json = cf::to_json $ref	255	=item $json = cf::to_json $ref
121		256
122	Converts a perl data structure into its JSON representation.	257	Converts a perl data structure into its JSON representation.
123		258
124	=cut	259	=cut
125		260
126	sub to_json($) {	261	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	262
128	JSON::Syck::Dump $_[0]	263	sub to_json ($) { $json_coder->encode ($_[0]) }
		264	sub from_json ($) { $json_coder->decode ($_[0]) }
		265
		266	=item cf::lock_wait $string
		267
		268	Wait until the given lock is available. See cf::lock_acquire.
		269
		270	=item my $lock = cf::lock_acquire $string
		271
		272	Wait until the given lock is available and then acquires it and returns
		273	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		274	for example when the coroutine gets canceled), the lock is automatically
		275	returned.
		276
		277	Lock names should begin with a unique identifier (for example, cf::map::find
		278	uses map_find and cf::map::load uses map_load).
		279
		280	=item $locked = cf::lock_active $string
		281
		282	Return true if the lock is currently active, i.e. somebody has locked it.
		283
		284	=cut
		285
		286	our %LOCK;
		287
		288	sub lock_wait($) {
		289	my ($key) = @_;
		290
		291	# wait for lock, if any
		292	while ($LOCK{$key}) {
		293	push @{ $LOCK{$key} }, $Coro::current;
		294	Coro::schedule;
		295	}
		296	}
		297
		298	sub lock_acquire($) {
		299	my ($key) = @_;
		300
		301	# wait, to be sure we are not locked
		302	lock_wait $key;
		303
		304	$LOCK{$key} = [];
		305
		306	Coro::guard {
		307	# wake up all waiters, to be on the safe side
		308	$_->ready for @{ delete $LOCK{$key} };
		309	}
		310	}
		311
		312	sub lock_active($) {
		313	my ($key) = @_;
		314
		315	! ! $LOCK{$key}
		316	}
		317
		318	sub freeze_mainloop {
		319	return unless $TICK_WATCHER->is_active;
		320
		321	my $guard = Coro::guard {
		322	$TICK_WATCHER->start;
		323	};
		324	$TICK_WATCHER->stop;
		325	$guard
		326	}
		327
		328	=item cf::get_slot $time[, $priority[, $name]]
		329
		330	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		331	This call blocks and returns only when you have at least C<$time> seconds
		332	of cpu time till the next tick. The slot is only valid till the next cede.
		333
		334	The optional C<$name> can be used to identify the job to run. It might be
		335	used for statistical purposes and should identify the same time-class.
		336
		337	Useful for short background jobs.
		338
		339	=cut
		340
		341	our @SLOT_QUEUE;
		342	our $SLOT_QUEUE;
		343
		344	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		345	$SLOT_QUEUE = Coro::async {
		346	my $signal = new Coro::Signal;
		347
		348	while () {
		349	next_job:
		350	my $avail = cf::till_tick;
		351	if ($avail > 0.01) {
		352	for (0 .. $#SLOT_QUEUE) {
		353	if ($SLOT_QUEUE[$_][0] < $avail) {
		354	my $job = splice @SLOT_QUEUE, $_, 1, ();
		355	$job->[2]->send;
		356	Coro::cede;
		357	goto next_job;
		358	}
		359	}
		360	}
		361
		362	if (@SLOT_QUEUE) {
		363	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		364	push @cf::WAIT_FOR_TICK, $signal;
		365	$signal->wait;
		366	} else {
		367	Coro::schedule;
		368	}
		369	}
		370	};
		371
		372	sub get_slot($;$$) {
		373	my ($time, $pri, $name) = @_;
		374
		375	$time = $TICK * .6 if $time > $TICK * .6;
		376	my $sig = new Coro::Signal;
		377
		378	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		379	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		380	$SLOT_QUEUE->ready;
		381	$sig->wait;
		382	}
		383
		384	=item cf::async { BLOCK }
		385
		386	Currently the same as Coro::async_pool, meaning you cannot use
		387	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		388	thing you are allowed to do is call C<prio> on it.
		389
		390	=cut
		391
		392	BEGIN { *async = \&Coro::async_pool }
		393
		394	=item cf::sync_job { BLOCK }
		395
		396	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		397	is always able to handle events or runnable, as Crossfire TRT is only
		398	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		399	acceptable.
		400
		401	If it must be done, put the blocking parts into C<sync_job>. This will run
		402	the given BLOCK in another coroutine while waiting for the result. The
		403	server will be frozen during this time, so the block should either finish
		404	fast or be very important.
		405
		406	=cut
		407
		408	sub sync_job(&) {
		409	my ($job) = @_;
		410
		411	if ($Coro::current == $Coro::main) {
		412	my $time = Event::time;
		413
		414	# this is the main coro, too bad, we have to block
		415	# till the operation succeeds, freezing the server :/
		416
		417	# TODO: use suspend/resume instead
		418	# (but this is cancel-safe)
		419	my $freeze_guard = freeze_mainloop;
		420
		421	my $busy = 1;
		422	my @res;
		423
		424	(async {
		425	@res = eval { $job->() };
		426	warn $@ if $@;
		427	undef $busy;
		428	})->prio (Coro::PRIO_MAX);
		429
		430	while ($busy) {
		431	Coro::cede or Event::one_event;
		432	}
		433
		434	$time = Event::time - $time;
		435
		436	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		437	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		438
		439	$tick_start += $time; # do not account sync jobs to server load
		440
		441	wantarray ? @res : $res[0]
		442	} else {
		443	# we are in another coroutine, how wonderful, everything just works
		444
		445	$job->()
		446	}
		447	}
		448
		449	=item $coro = cf::async_ext { BLOCK }
		450
		451	Like async, but this coro is automatically being canceled when the
		452	extension calling this is being unloaded.
		453
		454	=cut
		455
		456	sub async_ext(&) {
		457	my $cb = shift;
		458
		459	my $coro = &Coro::async ($cb);
		460
		461	$coro->on_destroy (sub {
		462	delete $EXT_CORO{$coro+0};
		463	});
		464	$EXT_CORO{$coro+0} = $coro;
		465
		466	$coro
		467	}
		468
		469	=item fork_call { }, $args
		470
		471	Executes the given code block with the given arguments in a seperate
		472	process, returning the results. Everything must be serialisable with
		473	Coro::Storable. May, of course, block. Note that the executed sub may
		474	never block itself or use any form of Event handling.
		475
		476	=cut
		477
		478	sub fork_call(&@) {
		479	my ($cb, @args) = @_;
		480
		481	# we seemingly have to make a local copy of the whole thing,
		482	# otherwise perl prematurely frees the stuff :/
		483	# TODO: investigate and fix (liekly this will be rather laborious)
		484
		485	my @res = Coro::Util::fork_eval {
		486	reset_signals;
		487	&$cb
		488	}, @args;
		489
		490	wantarray ? @res : $res[-1]
		491	}
		492
		493	=item $value = cf::db_get $family => $key
		494
		495	Returns a single value from the environment database.
		496
		497	=item cf::db_put $family => $key => $value
		498
		499	Stores the given C<$value> in the family. It can currently store binary
		500	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		501
		502	=cut
		503
		504	our $DB;
		505
		506	sub db_init {
		507	unless ($DB) {
		508	$DB = BDB::db_create $DB_ENV;
		509
		510	cf::sync_job {
		511	eval {
		512	$DB->set_flags (BDB::CHKSUM);
		513
		514	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		515	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		516	cf::cleanup "db_open(db): $!" if $!;
		517	};
		518	cf::cleanup "db_open(db): $@" if $@;
		519	};
		520	}
		521	}
		522
		523	sub db_get($$) {
		524	my $key = "$_[0]/$_[1]";
		525
		526	cf::sync_job {
		527	BDB::db_get $DB, undef, $key, my $data;
		528
		529	$! ? ()
		530	: $data
		531	}
		532	}
		533
		534	sub db_put($$$) {
		535	BDB::dbreq_pri 4;
		536	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		537	}
		538
		539	=item cf::cache $id => [$paths...], $processversion => $process
		540
		541	Generic caching function that returns the value of the resource $id,
		542	caching and regenerating as required.
		543
		544	This function can block.
		545
		546	=cut
		547
		548	sub cache {
		549	my ($id, $src, $processversion, $process) = @_;
		550
		551	my $meta =
		552	join "\x00",
		553	$processversion,
		554	map {
		555	aio_stat $_
		556	and Carp::croak "$_: $!";
		557
		558	($_, (stat _)[7,9])
		559	} @$src;
		560
		561	my $dbmeta = db_get cache => "$id/meta";
		562	if ($dbmeta ne $meta) {
		563	# changed, we may need to process
		564
		565	my @data;
		566	my $md5;
		567
		568	for (0 .. $#$src) {
		569	0 <= aio_load $src->[$_], $data[$_]
		570	or Carp::croak "$src->[$_]: $!";
		571	}
		572
		573	# if processing is expensive, check
		574	# checksum first
		575	if (1) {
		576	$md5 =
		577	join "\x00",
		578	$processversion,
		579	map {
		580	Coro::cede;
		581	($src->[$_], Digest::MD5::md5_hex $data[$_])
		582	} 0.. $#$src;
		583
		584
		585	my $dbmd5 = db_get cache => "$id/md5";
		586	if ($dbmd5 eq $md5) {
		587	db_put cache => "$id/meta", $meta;
		588
		589	return db_get cache => "$id/data";
		590	}
		591	}
		592
		593	my $t1 = Time::HiRes::time;
		594	my $data = $process->(\@data);
		595	my $t2 = Time::HiRes::time;
		596
		597	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		598
		599	db_put cache => "$id/data", $data;
		600	db_put cache => "$id/md5" , $md5;
		601	db_put cache => "$id/meta", $meta;
		602
		603	return $data;
		604	}
		605
		606	db_get cache => "$id/data"
		607	}
		608
		609	=item cf::datalog type => key => value, ...
		610
		611	Log a datalog packet of the given type with the given key-value pairs.
		612
		613	=cut
		614
		615	sub datalog($@) {
		616	my ($type, %kv) = @_;
		617	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
129	}	618	}
130		619
131	=back	620	=back
132		621
133	=cut	622	=cut
134		623
135	#############################################################################	624	#############################################################################
136		625
137	=head2 EVENTS AND OBJECT ATTACHMENTS	626	=head2 ATTACHABLE OBJECTS
		627
		628	Many objects in crossfire are so-called attachable objects. That means you can
		629	attach callbacks/event handlers (a collection of which is called an "attachment")
		630	to it. All such attachable objects support the following methods.
		631
		632	In the following description, CLASS can be any of C<global>, C<object>
		633	C<player>, C<client> or C<map> (i.e. the attachable objects in
		634	Crossfire TRT).
138		635
139	=over 4	636	=over 4
140		637
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)
154
155	=item $map->detach ($attachment)
156
157	Attach/detach a pre-registered attachment to a client.
158
159	=item $client->attach ($attachment, key => $value...)	638	=item $attachable->attach ($attachment, key => $value...)
160		639
161	=item $client->detach ($attachment)	640	=item $attachable->detach ($attachment)
162		641
163	Attach/detach a pre-registered attachment to a map.	642	Attach/detach a pre-registered attachment to a specific object and give it
		643	the specified key/value pairs as arguments.
164		644
165	=item $bool = $object->attached ($name)	645	Example, attach a minesweeper attachment to the given object, making it a
		646	10x10 minesweeper game:
166		647
167	=item $bool = $player->attached ($name)	648	$obj->attach (minesweeper => width => 10, height => 10);
168		649
169	=item $bool = $client->attached ($name)	650	=item $bool = $attachable->attached ($name)
170
171	=item $bool = $map->attached ($name)
172		651
173	Checks wether the named attachment is currently attached to the object.	652	Checks wether the named attachment is currently attached to the object.
174		653
175	=item cf::attach_global ...	654	=item cf::CLASS->attach ...
176		655
177	Attach handlers for global events.	656	=item cf::CLASS->detach ...
178		657
179	This and all following C<attach_*>-functions expect any number of the	658	Define an anonymous attachment and attach it to all objects of the given
180	following handler/hook descriptions:	659	CLASS. See the next function for an explanation of its arguments.
		660
		661	You can attach to global events by using the C<cf::global> class.
		662
		663	Example, log all player logins:
		664
		665	cf::player->attach (
		666	on_login => sub {
		667	my ($pl) = @_;
		668	...
		669	},
		670	);
		671
		672	Example, attach to the jeweler skill:
		673
		674	cf::object->attach (
		675	type => cf::SKILL,
		676	subtype => cf::SK_JEWELER,
		677	on_use_skill => sub {
		678	my ($sk, $ob, $part, $dir, $msg) = @_;
		679	...
		680	},
		681	);
		682
		683	=item cf::CLASS::attachment $name, ...
		684
		685	Register an attachment by C<$name> through which attachable objects of the
		686	given CLASS can refer to this attachment.
		687
		688	Some classes such as crossfire maps and objects can specify attachments
		689	that are attached at load/instantiate time, thus the need for a name.
		690
		691	These calls expect any number of the following handler/hook descriptions:
181		692
182	=over 4	693	=over 4
183		694
184	=item prio => $number	695	=item prio => $number
185		696
…		…
187	by another C<prio> setting). Lower priority handlers get executed	698	by another C<prio> setting). Lower priority handlers get executed
188	earlier. The default priority is C<0>, and many built-in handlers are	699	earlier. The default priority is C<0>, and many built-in handlers are
189	registered at priority C<-1000>, so lower priorities should not be used	700	registered at priority C<-1000>, so lower priorities should not be used
190	unless you know what you are doing.	701	unless you know what you are doing.
191		702
		703	=item type => $type
		704
		705	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		706	given type of objects only (the additional parameter C<subtype> can be
		707	used to further limit to the given subtype).
		708
192	=item on_I<event> => \&cb	709	=item on_I<event> => \&cb
193		710
194	Call the given code reference whenever the named event happens (event is	711	Call the given code reference whenever the named event happens (event is
195	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	712	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
196	handlers are recognised generally depends on the type of object these	713	handlers are recognised generally depends on the type of object these
…		…
205	package and register them. Only handlers for eevents supported by the	722	package and register them. Only handlers for eevents supported by the
206	object/class are recognised.	723	object/class are recognised.
207		724
208	=back	725	=back
209		726
210	=item cf::attach_to_type $object_type, $subtype, ...	727	Example, define an attachment called "sockpuppet" that calls the given
		728	event handler when a monster attacks:
211		729
212	Attach handlers for a specific object type (e.g. TRANSPORT) and	730	cf::object::attachment sockpuppet =>
213	subtype. If C<$subtype> is zero or undef, matches all objects of the given	731	on_skill_attack => sub {
214	type.	732	my ($self, $victim) = @_;
215		733	...
216	=item cf::attach_to_objects ...
217
218	Attach handlers to all objects. Do not use this except for debugging or
219	very rare events, as handlers are (obviously) called for I<all> objects in
220	the game.
221
222	=item cf::attach_to_players ...
223
224	Attach handlers to all players.
225
226	=item cf::attach_to_clients ...
227
228	Attach handlers to all players.
229
230	=item cf::attach_to_maps ...
231
232	Attach handlers to all maps.
233
234	=item cf:register_attachment $name, ...
235
236	Register an attachment by name through which objects can refer to this
237	attachment.
238
239	=item cf:register_player_attachment $name, ...
240
241	Register an attachment by name through which players can refer to this
242	attachment.
243
244	=item cf:register_map_attachment $name, ...
245
246	Register an attachment by name through which maps can refer to this
247	attachment.
248
249	=cut
250
251	# the following variables are defined in .xs and must not be re-created
252	our @CB_GLOBAL = (); # registry for all global events
253	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
254	our @CB_PLAYER = ();
255	our @CB_CLIENT = ();
256	our @CB_TYPE = (); # registry for type (cf-object class) based events
257	our @CB_MAP = ();
258
259	my %attachment;
260
261	sub _attach_cb($\%$$$) {
262	my ($registry, $undo, $event, $prio, $cb) = @_;
263
264	use sort 'stable';
265
266	$cb = [$prio, $cb];
267
268	@{$registry->[$event]} = sort
269	{ $a->[0] cmp $b->[0] }
270	@{$registry->[$event] || []}, $cb;
271
272	push @{$undo->{cb}}, [$event, $cb];
273	}
274
275	# attach handles attaching event callbacks
276	# the only thing the caller has to do is pass the correct
277	# registry (== where the callback attaches to).
278	sub _attach(\@$@) {
279	my ($registry, $klass, @arg) = @_;
280
281	my $prio = 0;
282
283	my %undo = (
284	registry => $registry,
285	cb => [],
286	);
287
288	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
289
290	while (@arg) {
291	my $type = shift @arg;
292
293	if ($type eq "prio") {
294	$prio = shift @arg;
295
296	} elsif ($type eq "package") {
297	my $pkg = shift @arg;
298
299	while (my ($name, $id) = each %cb_id) {
300	if (my $cb = $pkg->can ($name)) {
301	_attach_cb $registry, %undo, $id, $prio, $cb;
302	}
303	}	734	}
304
305	} elsif (exists $cb_id{$type}) {
306	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
307
308	} elsif (ref $type) {
309	warn "attaching objects not supported, ignoring.\n";
310
311	} else {
312	shift @arg;
313	warn "attach argument '$type' not supported, ignoring.\n";
314	}
315	}
316
317	\%undo
318	}
319
320	sub _attach_attachment {
321	my ($obj, $name, %arg) = @_;
322
323	return if exists $obj->{_attachment}{$name};
324
325	my $res;
326
327	if (my $attach = $attachment{$name}) {
328	my $registry = $obj->registry;
329
330	for (@$attach) {
331	my ($klass, @attach) = @$_;
332	$res = _attach @$registry, $klass, @attach;
333	}
334
335	$obj->{$name} = \%arg;
336	} else {
337	warn "object uses attachment '$name' that is not available, postponing.\n";
338	}
339
340	$obj->{_attachment}{$name} = undef;
341
342	$res->{attachment} = $name;
343	$res
344	}
345
346	*cf::object::attach =
347	*cf::player::attach =
348	*cf::client::attach =
349	*cf::map::attach = sub {
350	my ($obj, $name, %arg) = @_;
351
352	_attach_attachment $obj, $name, %arg;
353	};
354
355	# all those should be optimised
356	*cf::object::detach =
357	*cf::player::detach =
358	*cf::client::detach =
359	*cf::map::detach = sub {
360	my ($obj, $name) = @_;
361
362	delete $obj->{_attachment}{$name};
363	reattach ($obj);
364	};
365
366	*cf::object::attached =
367	*cf::player::attached =
368	*cf::client::attached =
369	*cf::map::attached = sub {
370	my ($obj, $name) = @_;
371
372	exists $obj->{_attachment}{$name}
373	};
374
375	sub attach_global {
376	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
377	}
378
379	sub attach_to_type {
380	my $type = shift;
381	my $subtype = shift;
382
383	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
384	}
385
386	sub attach_to_objects {
387	_attach @CB_OBJECT, KLASS_OBJECT, @_
388	}
389
390	sub attach_to_players {
391	_attach @CB_PLAYER, KLASS_PLAYER, @_
392	}
393
394	sub attach_to_clients {
395	_attach @CB_CLIENT, KLASS_CLIENT, @_
396	}
397
398	sub attach_to_maps {
399	_attach @CB_MAP, KLASS_MAP, @_
400	}
401
402	sub register_attachment {
403	my $name = shift;
404
405	$attachment{$name} = [[KLASS_OBJECT, @_]];
406	}
407
408	sub register_player_attachment {
409	my $name = shift;
410
411	$attachment{$name} = [[KLASS_PLAYER, @_]];
412	}
413
414	sub register_client_attachment {
415	my $name = shift;
416
417	$attachment{$name} = [[KLASS_CLIENT, @_]];
418	}
419
420	sub register_map_attachment {
421	my $name = shift;
422
423	$attachment{$name} = [[KLASS_MAP, @_]];
424	}
425
426	our $override;
427	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
428
429	sub override {
430	$override = 1;
431	@invoke_results = ();
432	}
433
434	sub do_invoke {
435	my $event = shift;
436	my $callbacks = shift;
437
438	@invoke_results = ();
439
440	local $override;
441
442	for (@$callbacks) {
443	eval { &{$_->[1]} };
444
445	if ($@) {
446	warn "$@";
447	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
448	override;
449	}
450
451	return 1 if $override;
452	}
453
454	0	735	}
455	}
456		736
457	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	737	=item $attachable->valid
458
459	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
460
461	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
462
463	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
464
465	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
466
467	Generate a global/object/player/map-specific event with the given arguments.
468
469	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
470	removed in future versions), and there is no public API to access override
471	results (if you must, access C<@cf::invoke_results> directly).
472
473	=back
474
475	=cut
476
477	#############################################################################
478
479	=head2 METHODS VALID FOR ALL CORE OBJECTS
480
481	=over 4
482
483	=item $object->valid, $player->valid, $client->valid, $map->valid
484		738
485	Just because you have a perl object does not mean that the corresponding	739	Just because you have a perl object does not mean that the corresponding
486	C-level object still exists. If you try to access an object that has no	740	C-level object still exists. If you try to access an object that has no
487	valid C counterpart anymore you get an exception at runtime. This method	741	valid C counterpart anymore you get an exception at runtime. This method
488	can be used to test for existence of the C object part without causing an	742	can be used to test for existence of the C object part without causing an
489	exception.	743	exception.
490		744
		745	=cut
		746
		747	# the following variables are defined in .xs and must not be re-created
		748	our @CB_GLOBAL = (); # registry for all global events
		749	our @CB_ATTACHABLE = (); # registry for all attachables
		750	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		751	our @CB_PLAYER = ();
		752	our @CB_CLIENT = ();
		753	our @CB_TYPE = (); # registry for type (cf-object class) based events
		754	our @CB_MAP = ();
		755
		756	my %attachment;
		757
		758	sub cf::attachable::thawer_merge {
		759	# simply override everything except _meta
		760	local $_[0]{_meta};
		761	%{$_[0]} = %{$_[1]};
		762	}
		763
		764	sub _attach_cb($$$$) {
		765	my ($registry, $event, $prio, $cb) = @_;
		766
		767	use sort 'stable';
		768
		769	$cb = [$prio, $cb];
		770
		771	@{$registry->[$event]} = sort
		772	{ $a->[0] cmp $b->[0] }
		773	@{$registry->[$event] || []}, $cb;
		774	}
		775
		776	# hack
		777	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		778
		779	# attach handles attaching event callbacks
		780	# the only thing the caller has to do is pass the correct
		781	# registry (== where the callback attaches to).
		782	sub _attach {
		783	my ($registry, $klass, @arg) = @_;
		784
		785	my $object_type;
		786	my $prio = 0;
		787	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		788
		789	#TODO: get rid of this hack
		790	if ($attachable_klass{$klass}) {
		791	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		792	}
		793
		794	while (@arg) {
		795	my $type = shift @arg;
		796
		797	if ($type eq "prio") {
		798	$prio = shift @arg;
		799
		800	} elsif ($type eq "type") {
		801	$object_type = shift @arg;
		802	$registry = $CB_TYPE[$object_type] ||= [];
		803
		804	} elsif ($type eq "subtype") {
		805	defined $object_type or Carp::croak "subtype specified without type";
		806	my $object_subtype = shift @arg;
		807	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		808
		809	} elsif ($type eq "package") {
		810	my $pkg = shift @arg;
		811
		812	while (my ($name, $id) = each %cb_id) {
		813	if (my $cb = $pkg->can ($name)) {
		814	_attach_cb $registry, $id, $prio, $cb;
		815	}
		816	}
		817
		818	} elsif (exists $cb_id{$type}) {
		819	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		820
		821	} elsif (ref $type) {
		822	warn "attaching objects not supported, ignoring.\n";
		823
		824	} else {
		825	shift @arg;
		826	warn "attach argument '$type' not supported, ignoring.\n";
		827	}
		828	}
		829	}
		830
		831	sub _object_attach {
		832	my ($obj, $name, %arg) = @_;
		833
		834	return if exists $obj->{_attachment}{$name};
		835
		836	if (my $attach = $attachment{$name}) {
		837	my $registry = $obj->registry;
		838
		839	for (@$attach) {
		840	my ($klass, @attach) = @$_;
		841	_attach $registry, $klass, @attach;
		842	}
		843
		844	$obj->{$name} = \%arg;
		845	} else {
		846	warn "object uses attachment '$name' which is not available, postponing.\n";
		847	}
		848
		849	$obj->{_attachment}{$name} = undef;
		850	}
		851
		852	sub cf::attachable::attach {
		853	if (ref $_[0]) {
		854	_object_attach @_;
		855	} else {
		856	_attach shift->_attach_registry, @_;
		857	}
		858	_recalc_want;
		859	};
		860
		861	# all those should be optimised
		862	sub cf::attachable::detach {
		863	my ($obj, $name) = @_;
		864
		865	if (ref $obj) {
		866	delete $obj->{_attachment}{$name};
		867	reattach ($obj);
		868	} else {
		869	Carp::croak "cannot, currently, detach class attachments";
		870	}
		871	_recalc_want;
		872	};
		873
		874	sub cf::attachable::attached {
		875	my ($obj, $name) = @_;
		876
		877	exists $obj->{_attachment}{$name}
		878	}
		879
		880	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		881	eval "#line " . __LINE__ . " 'cf.pm'
		882	sub cf::\L$klass\E::_attach_registry {
		883	(\\\@CB_$klass, KLASS_$klass)
		884	}
		885
		886	sub cf::\L$klass\E::attachment {
		887	my \$name = shift;
		888
		889	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		890	}
		891	";
		892	die if $@;
		893	}
		894
		895	our $override;
		896	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		897
		898	sub override {
		899	$override = 1;
		900	@INVOKE_RESULTS = (@_);
		901	}
		902
		903	sub do_invoke {
		904	my $event = shift;
		905	my $callbacks = shift;
		906
		907	@INVOKE_RESULTS = ();
		908
		909	local $override;
		910
		911	for (@$callbacks) {
		912	eval { &{$_->[1]} };
		913
		914	if ($@) {
		915	warn "$@";
		916	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		917	override;
		918	}
		919
		920	return 1 if $override;
		921	}
		922
		923	0
		924	}
		925
		926	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		927
		928	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		929
		930	Generate an object-specific event with the given arguments.
		931
		932	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		933	removed in future versions), and there is no public API to access override
		934	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		935
491	=back	936	=back
492		937
493	=cut	938	=cut
494
495	*cf::object::valid =
496	*cf::player::valid =
497	*cf::client::valid =
498	*cf::map::valid = \&cf::_valid;
499		939
500	#############################################################################	940	#############################################################################
501	# object support	941	# object support
		942	#
502		943
503	sub instantiate {	944	sub _can_merge {
504	my ($obj, $data) = @_;	945	my ($ob1, $ob2) = @_;
505		946
506	$data = from_json $data;	947	local $Storable::canonical = 1;
		948	my $fob1 = Storable::freeze $ob1;
		949	my $fob2 = Storable::freeze $ob2;
507		950
508	for (@$data) {	951	$fob1 eq $fob2
509	my ($name, $args) = @$_;
510
511	$obj->attach ($name, %{$args || {} });
512	}
513	}	952	}
514		953
515	# basically do the same as instantiate, without calling instantiate
516	sub reattach {	954	sub reattach {
		955	# basically do the same as instantiate, without calling instantiate
517	my ($obj) = @_;	956	my ($obj) = @_;
		957
		958	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		959
518	my $registry = $obj->registry;	960	my $registry = $obj->registry;
519		961
520	@$registry = ();	962	@$registry = ();
521		963
522	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	964	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
523		965
524	for my $name (keys %{ $obj->{_attachment} || {} }) {	966	for my $name (keys %{ $obj->{_attachment} || {} }) {
525	if (my $attach = $attachment{$name}) {	967	if (my $attach = $attachment{$name}) {
526	for (@$attach) {	968	for (@$attach) {
527	my ($klass, @attach) = @$_;	969	my ($klass, @attach) = @$_;
528	_attach @$registry, $klass, @attach;	970	_attach $registry, $klass, @attach;
529	}	971	}
530	} else {	972	} else {
531	warn "object uses attachment '$name' that is not available, postponing.\n";	973	warn "object uses attachment '$name' that is not available, postponing.\n";
532	}	974	}
533	}	975	}
534	}	976	}
535		977
536	sub object_freezer_save {	978	cf::attachable->attach (
537	my ($filename, $rdata, $objs) = @_;
538
539	if (length $$rdata) {
540	warn sprintf "saving %s (%d,%d)\n",
541	$filename, length $$rdata, scalar @$objs;
542
543	if (open my $fh, ">:raw", "$filename~") {
544	chmod SAVE_MODE, $fh;
545	syswrite $fh, $$rdata;
546	close $fh;
547
548	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
549	chmod SAVE_MODE, $fh;
550	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
551	close $fh;
552	rename "$filename.pst~", "$filename.pst";
553	} else {
554	unlink "$filename.pst";
555	}
556
557	rename "$filename~", $filename;
558	} else {
559	warn "FATAL: $filename~: $!\n";
560	}
561	} else {
562	unlink $filename;
563	unlink "$filename.pst";
564	}
565	}
566
567	sub object_freezer_as_string {
568	my ($rdata, $objs) = @_;
569
570	use Data::Dumper;
571
572	$$rdata . Dumper $objs
573	}
574
575	sub object_thawer_load {
576	my ($filename) = @_;
577
578	local $/;
579
580	my $av;
581
582	#TODO: use sysread etc.
583	if (open my $data, "<:raw:perlio", $filename) {
584	$data = <$data>;
585	if (open my $pst, "<:raw:perlio", "$filename.pst") {
586	$av = eval { (Storable::thaw <$pst>)->{objs} };
587	}
588	return ($data, $av);
589	}
590
591	()
592	}
593
594	attach_to_objects
595	prio => -1000000,	979	prio => -1000000,
		980	on_instantiate => sub {
		981	my ($obj, $data) = @_;
		982
		983	$data = from_json $data;
		984
		985	for (@$data) {
		986	my ($name, $args) = @$_;
		987
		988	$obj->attach ($name, %{$args || {} });
		989	}
		990	},
		991	on_reattach => \&reattach,
596	on_clone => sub {	992	on_clone => sub {
597	my ($src, $dst) = @_;	993	my ($src, $dst) = @_;
598		994
599	@{$dst->registry} = @{$src->registry};	995	@{$dst->registry} = @{$src->registry};
600		996
601	%$dst = %$src;	997	%$dst = %$src;
602		998
603	%{$dst->{_attachment}} = %{$src->{_attachment}}	999	%{$dst->{_attachment}} = %{$src->{_attachment}}
604	if exists $src->{_attachment};	1000	if exists $src->{_attachment};
605	},	1001	},
606	;	1002	);
		1003
		1004	sub object_freezer_save {
		1005	my ($filename, $rdata, $objs) = @_;
		1006
		1007	sync_job {
		1008	if (length $$rdata) {
		1009	warn sprintf "saving %s (%d,%d)\n",
		1010	$filename, length $$rdata, scalar @$objs;
		1011
		1012	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1013	chmod SAVE_MODE, $fh;
		1014	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1015	aio_fsync $fh if $cf::USE_FSYNC;
		1016	close $fh;
		1017
		1018	if (@$objs) {
		1019	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1020	chmod SAVE_MODE, $fh;
		1021	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1022	aio_write $fh, 0, (length $data), $data, 0;
		1023	aio_fsync $fh if $cf::USE_FSYNC;
		1024	close $fh;
		1025	aio_rename "$filename.pst~", "$filename.pst";
		1026	}
		1027	} else {
		1028	aio_unlink "$filename.pst";
		1029	}
		1030
		1031	aio_rename "$filename~", $filename;
		1032	} else {
		1033	warn "FATAL: $filename~: $!\n";
		1034	}
		1035	} else {
		1036	aio_unlink $filename;
		1037	aio_unlink "$filename.pst";
		1038	}
		1039	}
		1040	}
		1041
		1042	sub object_freezer_as_string {
		1043	my ($rdata, $objs) = @_;
		1044
		1045	use Data::Dumper;
		1046
		1047	$$rdata . Dumper $objs
		1048	}
		1049
		1050	sub object_thawer_load {
		1051	my ($filename) = @_;
		1052
		1053	my ($data, $av);
		1054
		1055	(aio_load $filename, $data) >= 0
		1056	or return;
		1057
		1058	unless (aio_stat "$filename.pst") {
		1059	(aio_load "$filename.pst", $av) >= 0
		1060	or return;
		1061	$av = eval { (Storable::thaw $av)->{objs} };
		1062	}
		1063
		1064	warn sprintf "loading %s (%d)\n",
		1065	$filename, length $data, scalar @{$av || []};
		1066	return ($data, $av);
		1067	}
		1068
		1069	=head2 COMMAND CALLBACKS
		1070
		1071	=over 4
		1072
		1073	=cut
607		1074
608	#############################################################################	1075	#############################################################################
609	# command handling &c	1076	# command handling &c
610		1077
611	=item cf::register_command $name => \&callback($ob,$args);	1078	=item cf::register_command $name => \&callback($ob,$args);
…		…
624	push @{ $COMMAND{$name} }, [$caller, $cb];	1091	push @{ $COMMAND{$name} }, [$caller, $cb];
625	}	1092	}
626		1093
627	=item cf::register_extcmd $name => \&callback($pl,$packet);	1094	=item cf::register_extcmd $name => \&callback($pl,$packet);
628		1095
629	Register a callbackf ro execution when the client sends an extcmd packet.	1096	Register a callback for execution when the client sends an (synchronous)
		1097	extcmd packet. Ext commands will be processed in the order they are
		1098	received by the server, like other user commands. The first argument is
		1099	the logged-in player. Ext commands can only be processed after a player
		1100	has logged in successfully.
630		1101
631	If the callback returns something, it is sent back as if reply was being	1102	If the callback returns something, it is sent back as if reply was being
632	called.	1103	called.
633		1104
		1105	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1106
		1107	Register a callback for execution when the client sends an (asynchronous)
		1108	exticmd packet. Exti commands are processed by the server as soon as they
		1109	are received, i.e. out of order w.r.t. other commands. The first argument
		1110	is a client socket. Exti commands can be received anytime, even before
		1111	log-in.
		1112
		1113	If the callback returns something, it is sent back as if reply was being
		1114	called.
		1115
634	=cut	1116	=cut
635		1117
636	sub register_extcmd {	1118	sub register_extcmd {
637	my ($name, $cb) = @_;	1119	my ($name, $cb) = @_;
638		1120
639	my $caller = caller;
640	#warn "registering extcmd '$name' to '$caller'";
641
642	$EXTCMD{$name} = [$cb, $caller];	1121	$EXTCMD{$name} = $cb;
643	}	1122	}
644		1123
645	attach_to_players	1124	sub register_exticmd {
		1125	my ($name, $cb) = @_;
		1126
		1127	$EXTICMD{$name} = $cb;
		1128	}
		1129
		1130	cf::player->attach (
646	on_command => sub {	1131	on_command => sub {
647	my ($pl, $name, $params) = @_;	1132	my ($pl, $name, $params) = @_;
648		1133
649	my $cb = $COMMAND{$name}	1134	my $cb = $COMMAND{$name}
650	or return;	1135	or return;
…		…
656	cf::override;	1141	cf::override;
657	},	1142	},
658	on_extcmd => sub {	1143	on_extcmd => sub {
659	my ($pl, $buf) = @_;	1144	my ($pl, $buf) = @_;
660		1145
661	my $msg = eval { from_json $buf };	1146	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
662		1147
663	if (ref $msg) {	1148	if (ref $msg) {
		1149	my ($type, $reply, @payload) =
		1150	"ARRAY" eq ref $msg
		1151	? @$msg
		1152	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1153
		1154	my @reply;
		1155
664	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1156	if (my $cb = $EXTCMD{$type}) {
665	if (my %reply = $cb->[0]->($pl, $msg)) {	1157	@reply = $cb->($pl, @payload);
666	$pl->ext_reply ($msg->{msgid}, %reply);
667	}
668	}	1158	}
		1159
		1160	$pl->ext_reply ($reply, @reply)
		1161	if $reply;
		1162
669	} else {	1163	} else {
670	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1164	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
671	}	1165	}
672		1166
673	cf::override;	1167	cf::override;
674	},	1168	},
675	;	1169	);
		1170
		1171	sub load_extensions {
		1172	cf::sync_job {
		1173	my %todo;
		1174
		1175	for my $path (<$LIBDIR/*.ext>) {
		1176	next unless -r $path;
		1177
		1178	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1179	my $base = $1;
		1180	my $pkg = $1;
		1181	$pkg =~ s/[^[:word:]]/_/g;
		1182	$pkg = "ext::$pkg";
		1183
		1184	open my $fh, "<:utf8", $path
		1185	or die "$path: $!";
		1186
		1187	my $source = do { local $/; <$fh> };
		1188
		1189	my %ext = (
		1190	path => $path,
		1191	base => $base,
		1192	pkg => $pkg,
		1193	);
		1194
		1195	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1196	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1197
		1198	$ext{source} =
		1199	"package $pkg; use strict; use utf8;\n"
		1200	. "#line 1 \"$path\"\n{\n"
		1201	. $source
		1202	. "\n};\n1";
		1203
		1204	$todo{$base} = \%ext;
		1205	}
		1206
		1207	my %done;
		1208	while (%todo) {
		1209	my $progress;
		1210
		1211	while (my ($k, $v) = each %todo) {
		1212	for (split /,\s*/, $v->{meta}{depends}) {
		1213	goto skip
		1214	unless exists $done{$_};
		1215	}
		1216
		1217	warn "... loading '$k' into '$v->{pkg}'\n";
		1218
		1219	unless (eval $v->{source}) {
		1220	my $msg = $@ ? "$v->{path}: $@\n"
		1221	: "$v->{base}: extension inactive.\n";
		1222
		1223	if (exists $v->{meta}{mandatory}) {
		1224	warn $msg;
		1225	warn "mandatory extension failed to load, exiting.\n";
		1226	exit 1;
		1227	}
		1228
		1229	warn $msg;
		1230	}
		1231
		1232	$done{$k} = delete $todo{$k};
		1233	push @EXTS, $v->{pkg};
		1234	$progress = 1;
		1235	}
		1236
		1237	skip:
		1238	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1239	unless $progress;
		1240	}
		1241	};
		1242	}
		1243
		1244	#############################################################################
		1245
		1246	=back
		1247
		1248	=head2 CORE EXTENSIONS
		1249
		1250	Functions and methods that extend core crossfire objects.
		1251
		1252	=cut
		1253
		1254	package cf::player;
		1255
		1256	use Coro::AIO;
		1257
		1258	=head3 cf::player
		1259
		1260	=over 4
		1261
		1262	=item cf::player::find $login
		1263
		1264	Returns the given player object, loading it if necessary (might block).
		1265
		1266	=cut
		1267
		1268	sub playerdir($) {
		1269	"$PLAYERDIR/"
		1270	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1271	}
		1272
		1273	sub path($) {
		1274	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1275
		1276	(playerdir $login) . "/playerdata"
		1277	}
		1278
		1279	sub find_active($) {
		1280	$cf::PLAYER{$_[0]}
		1281	and $cf::PLAYER{$_[0]}->active
		1282	and $cf::PLAYER{$_[0]}
		1283	}
		1284
		1285	sub exists($) {
		1286	my ($login) = @_;
		1287
		1288	$cf::PLAYER{$login}
		1289	or cf::sync_job { !aio_stat path $login }
		1290	}
		1291
		1292	sub find($) {
		1293	return $cf::PLAYER{$_[0]} || do {
		1294	my $login = $_[0];
		1295
		1296	my $guard = cf::lock_acquire "user_find:$login";
		1297
		1298	$cf::PLAYER{$_[0]} || do {
		1299	# rename old playerfiles to new ones
		1300	#TODO: remove when no longer required
		1301	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1302	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1303	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1304	aio_unlink +(playerdir $login) . "/$login.pl";
		1305
		1306	my $pl = load_pl path $login
		1307	or return;
		1308	$cf::PLAYER{$login} = $pl
		1309	}
		1310	}
		1311	}
		1312
		1313	sub save($) {
		1314	my ($pl) = @_;
		1315
		1316	return if $pl->{deny_save};
		1317
		1318	my $path = path $pl;
		1319	my $guard = cf::lock_acquire "user_save:$path";
		1320
		1321	return if $pl->{deny_save};
		1322
		1323	aio_mkdir playerdir $pl, 0770;
		1324	$pl->{last_save} = $cf::RUNTIME;
		1325
		1326	$pl->save_pl ($path);
		1327	Coro::cede;
		1328	}
		1329
		1330	sub new($) {
		1331	my ($login) = @_;
		1332
		1333	my $self = create;
		1334
		1335	$self->ob->name ($login);
		1336	$self->{deny_save} = 1;
		1337
		1338	$cf::PLAYER{$login} = $self;
		1339
		1340	$self
		1341	}
		1342
		1343	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1344
		1345	=cut
		1346
		1347	sub send_msg {
		1348	my $ns = shift->ns
		1349	or return;
		1350	$ns->send_msg (@_);
		1351	}
		1352
		1353	=item $pl->quit_character
		1354
		1355	Nukes the player without looking back. If logged in, the connection will
		1356	be destroyed. May block for a long time.
		1357
		1358	=cut
		1359
		1360	sub quit_character {
		1361	my ($pl) = @_;
		1362
		1363	my $name = $pl->ob->name;
		1364
		1365	$pl->{deny_save} = 1;
		1366	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1367
		1368	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1369	$pl->deactivate;
		1370	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1371	$pl->ns->destroy if $pl->ns;
		1372
		1373	my $path = playerdir $pl;
		1374	my $temp = "$path~$cf::RUNTIME~deleting~";
		1375	aio_rename $path, $temp;
		1376	delete $cf::PLAYER{$pl->ob->name};
		1377	$pl->destroy;
		1378
		1379	my $prefix = qr<^~\Q$name\E/>;
		1380
		1381	# nuke player maps
		1382	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1383
		1384	IO::AIO::aio_rmtree $temp;
		1385	}
		1386
		1387	=item $pl->kick
		1388
		1389	Kicks a player out of the game. This destroys the connection.
		1390
		1391	=cut
		1392
		1393	sub kick {
		1394	my ($pl, $kicker) = @_;
		1395
		1396	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1397	$pl->killer ("kicked");
		1398	$pl->ns->destroy;
		1399	}
		1400
		1401	=item cf::player::list_logins
		1402
		1403	Returns am arrayref of all valid playernames in the system, can take a
		1404	while and may block, so not sync_job-capable, ever.
		1405
		1406	=cut
		1407
		1408	sub list_logins {
		1409	my $dirs = aio_readdir $PLAYERDIR
		1410	or return [];
		1411
		1412	my @logins;
		1413
		1414	for my $login (@$dirs) {
		1415	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1416	aio_read $fh, 0, 512, my $buf, 0 or next;
		1417	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1418
		1419	utf8::decode $login;
		1420	push @logins, $login;
		1421	}
		1422
		1423	\@logins
		1424	}
		1425
		1426	=item $player->maps
		1427
		1428	Returns an arrayref of map paths that are private for this
		1429	player. May block.
		1430
		1431	=cut
		1432
		1433	sub maps($) {
		1434	my ($pl) = @_;
		1435
		1436	$pl = ref $pl ? $pl->ob->name : $pl;
		1437
		1438	my $files = aio_readdir playerdir $pl
		1439	or return;
		1440
		1441	my @paths;
		1442
		1443	for (@$files) {
		1444	utf8::decode $_;
		1445	next if /\.(?:pl|pst)$/;
		1446	next unless /^$PATH_SEP/o;
		1447
		1448	push @paths, cf::map::normalise "~$pl/$_";
		1449	}
		1450
		1451	\@paths
		1452	}
		1453
		1454	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1455
		1456	Expand crossfire pod fragments into protocol xml.
		1457
		1458	=cut
		1459
		1460	sub expand_cfpod {
		1461	((my $self), (local $_)) = @_;
		1462
		1463	# escape & and <
		1464	s/&/&amp;/g;
		1465	s/(?<![BIUGH])</&lt;/g;
		1466
		1467	# this is buggy, it needs to properly take care of nested <'s
		1468
		1469	1 while
		1470	# replace B<>, I<>, U<> etc.
		1471	s/B<([^\>]*)>/<b>$1<\/b>/
		1472	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1473	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1474	# replace G<male|female> tags
		1475	|| s{G<([^>|]*)\|([^>]*)>}{
		1476	$self->gender ? $2 : $1
		1477	}ge
		1478	# replace H<hint text>
		1479	|| s{H<([^\>]*)>}
		1480	{
		1481	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1482	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1483	"")
		1484	[$self->{hintmode}]
		1485	}ge;
		1486
		1487	# create single paragraphs (very hackish)
		1488	s/(?<=\S)\n(?=\w)/ /g;
		1489
		1490	# compress some whitespace
		1491	s/\s+\n/\n/g; # ws line-ends
		1492	s/\n\n+/\n/g; # double lines
		1493	s/^\n+//; # beginning lines
		1494	s/\n+$//; # ending lines
		1495
		1496	$_
		1497	}
		1498
		1499	sub hintmode {
		1500	$_[0]{hintmode} = $_[1] if @_ > 1;
		1501	$_[0]{hintmode}
		1502	}
		1503
		1504	=item $player->ext_reply ($msgid, @msg)
		1505
		1506	Sends an ext reply to the player.
		1507
		1508	=cut
		1509
		1510	sub ext_reply($$@) {
		1511	my ($self, $id, @msg) = @_;
		1512
		1513	$self->ns->ext_reply ($id, @msg)
		1514	}
		1515
		1516	=item $player->ext_msg ($type, @msg)
		1517
		1518	Sends an ext event to the client.
		1519
		1520	=cut
		1521
		1522	sub ext_msg($$@) {
		1523	my ($self, $type, @msg) = @_;
		1524
		1525	$self->ns->ext_msg ($type, @msg);
		1526	}
		1527
		1528	=head3 cf::region
		1529
		1530	=over 4
		1531
		1532	=cut
		1533
		1534	package cf::region;
		1535
		1536	=item cf::region::find_by_path $path
		1537
		1538	Tries to decuce the likely region for a map knowing only its path.
		1539
		1540	=cut
		1541
		1542	sub find_by_path($) {
		1543	my ($path) = @_;
		1544
		1545	my ($match, $specificity);
		1546
		1547	for my $region (list) {
		1548	if ($region->{match} && $path =~ $region->{match}) {
		1549	($match, $specificity) = ($region, $region->specificity)
		1550	if $region->specificity > $specificity;
		1551	}
		1552	}
		1553
		1554	$match
		1555	}
		1556
		1557	=back
		1558
		1559	=head3 cf::map
		1560
		1561	=over 4
		1562
		1563	=cut
		1564
		1565	package cf::map;
		1566
		1567	use Fcntl;
		1568	use Coro::AIO;
		1569
		1570	use overload
		1571	'""' => \&as_string,
		1572	fallback => 1;
		1573
		1574	our $MAX_RESET = 3600;
		1575	our $DEFAULT_RESET = 3000;
		1576
		1577	sub generate_random_map {
		1578	my ($self, $rmp) = @_;
		1579	# mit "rum" bekleckern, nicht
		1580	$self->_create_random_map (
		1581	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1582	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1583	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1584	$rmp->{exit_on_final_map},
		1585	$rmp->{xsize}, $rmp->{ysize},
		1586	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1587	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1588	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1589	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1590	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1591	(cf::region::find $rmp->{region}), $rmp->{custom}
		1592	)
		1593	}
		1594
		1595	=item cf::map->register ($regex, $prio)
		1596
		1597	Register a handler for the map path matching the given regex at the
		1598	givne priority (higher is better, built-in handlers have priority 0, the
		1599	default).
		1600
		1601	=cut
676		1602
677	sub register {	1603	sub register {
		1604	my (undef, $regex, $prio) = @_;
		1605	my $pkg = caller;
		1606
		1607	no strict;
		1608	push @{"$pkg\::ISA"}, __PACKAGE__;
		1609
		1610	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1611	}
		1612
		1613	# also paths starting with '/'
		1614	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1615
		1616	sub thawer_merge {
678	my ($base, $pkg) = @_;	1617	my ($self, $merge) = @_;
679		1618
680	#TODO	1619	# we have to keep some variables in memory intact
681	}	1620	local $self->{path};
		1621	local $self->{load_path};
682		1622
683	sub load_extension {	1623	$self->SUPER::thawer_merge ($merge);
		1624	}
		1625
		1626	sub normalise {
684	my ($path) = @_;	1627	my ($path, $base) = @_;
685		1628
686	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1629	$path = "$path"; # make sure its a string
687	my $base = $1;
688	my $pkg = $1;
689	$pkg =~ s/[^[:word:]]/_/g;
690	$pkg = "ext::$pkg";
691		1630
692	warn "loading '$path' into '$pkg'\n";	1631	$path =~ s/\.map$//;
693		1632
694	open my $fh, "<:utf8", $path	1633	# map plan:
695	or die "$path: $!";	1634	#
		1635	# /! non-realised random map exit (special hack!)
		1636	# {... are special paths that are not being touched
		1637	# ?xxx/... are special absolute paths
		1638	# ?random/... random maps
		1639	# /... normal maps
		1640	# ~user/... per-player map of a specific user
696		1641
697	my $source =	1642	$path =~ s/$PATH_SEP/\//go;
698	"package $pkg; use strict; use utf8;\n"
699	. "#line 1 \"$path\"\n{\n"
700	. (do { local $/; <$fh> })
701	. "\n};\n1";
702		1643
703	eval $source	1644	# treat it as relative path if it starts with
704	or die $@ ? "$path: $@\n"	1645	# something that looks reasonable
705	: "extension disabled.\n";	1646	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1647	$base or Carp::carp "normalise called with relative path and no base: '$path'";
706		1648
707	push @exts, $pkg;	1649	$base =~ s{[^/]+/?$}{};
708	$ext_pkg{$base} = $pkg;	1650	$path = "$base/$path";
709
710	# no strict 'refs';
711	# @{"$pkg\::ISA"} = ext::;
712
713	register $base, $pkg;
714	}
715
716	sub unload_extension {
717	my ($pkg) = @_;
718
719	warn "removing extension $pkg\n";
720
721	# remove hooks
722	#TODO
723	# for my $idx (0 .. $#PLUGIN_EVENT) {
724	# delete $hook[$idx]{$pkg};
725	# }	1651	}
726		1652
727	# remove commands	1653	for ($path) {
728	for my $name (keys %COMMAND) {	1654	redo if s{//}{/};
729	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1655	redo if s{/\.?/}{/};
		1656	redo if s{/[^/]+/\.\./}{/};
		1657	}
730		1658
731	if (@cb) {	1659	$path
732	$COMMAND{$name} = \@cb;	1660	}
		1661
		1662	sub new_from_path {
		1663	my (undef, $path, $base) = @_;
		1664
		1665	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1666
		1667	$path = normalise $path, $base;
		1668
		1669	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1670	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1671	my $self = bless cf::map::new, $pkg;
		1672	$self->{path} = $path; $self->path ($path);
		1673	$self->init; # pass $1 etc.
		1674	return $self;
		1675	}
		1676	}
		1677
		1678	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1679	()
		1680	}
		1681
		1682	sub init {
		1683	my ($self) = @_;
		1684
		1685	$self
		1686	}
		1687
		1688	sub as_string {
		1689	my ($self) = @_;
		1690
		1691	"$self->{path}"
		1692	}
		1693
		1694	# the displayed name, this is a one way mapping
		1695	sub visible_name {
		1696	&as_string
		1697	}
		1698
		1699	# the original (read-only) location
		1700	sub load_path {
		1701	my ($self) = @_;
		1702
		1703	"$MAPDIR/$self->{path}.map"
		1704	}
		1705
		1706	# the temporary/swap location
		1707	sub save_path {
		1708	my ($self) = @_;
		1709
		1710	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1711	"$TMPDIR/$path.map"
		1712	}
		1713
		1714	# the unique path, undef == no special unique path
		1715	sub uniq_path {
		1716	my ($self) = @_;
		1717
		1718	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1719	"$UNIQUEDIR/$path"
		1720	}
		1721
		1722	# and all this just because we cannot iterate over
		1723	# all maps in C++...
		1724	sub change_all_map_light {
		1725	my ($change) = @_;
		1726
		1727	$_->change_map_light ($change)
		1728	for grep $_->outdoor, values %cf::MAP;
		1729	}
		1730
		1731	sub decay_objects {
		1732	my ($self) = @_;
		1733
		1734	return if $self->{deny_reset};
		1735
		1736	$self->do_decay_objects;
		1737	}
		1738
		1739	sub unlink_save {
		1740	my ($self) = @_;
		1741
		1742	utf8::encode (my $save = $self->save_path);
		1743	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1744	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1745	}
		1746
		1747	sub load_header_from($) {
		1748	my ($self, $path) = @_;
		1749
		1750	utf8::encode $path;
		1751	#aio_open $path, O_RDONLY, 0
		1752	# or return;
		1753
		1754	$self->_load_header ($path)
		1755	or return;
		1756
		1757	$self->{load_path} = $path;
		1758
		1759	1
		1760	}
		1761
		1762	sub load_header_orig {
		1763	my ($self) = @_;
		1764
		1765	$self->load_header_from ($self->load_path)
		1766	}
		1767
		1768	sub load_header_temp {
		1769	my ($self) = @_;
		1770
		1771	$self->load_header_from ($self->save_path)
		1772	}
		1773
		1774	sub prepare_temp {
		1775	my ($self) = @_;
		1776
		1777	$self->last_access ((delete $self->{last_access})
		1778	|| $cf::RUNTIME); #d#
		1779	# safety
		1780	$self->{instantiate_time} = $cf::RUNTIME
		1781	if $self->{instantiate_time} > $cf::RUNTIME;
		1782	}
		1783
		1784	sub prepare_orig {
		1785	my ($self) = @_;
		1786
		1787	$self->{load_original} = 1;
		1788	$self->{instantiate_time} = $cf::RUNTIME;
		1789	$self->last_access ($cf::RUNTIME);
		1790	$self->instantiate;
		1791	}
		1792
		1793	sub load_header {
		1794	my ($self) = @_;
		1795
		1796	if ($self->load_header_temp) {
		1797	$self->prepare_temp;
733	} else {	1798	} else {
734	delete $COMMAND{$name};	1799	$self->load_header_orig
735	}	1800	or return;
		1801	$self->prepare_orig;
		1802	}
		1803
		1804	$self->{deny_reset} = 1
		1805	if $self->no_reset;
		1806
		1807	$self->default_region (cf::region::find_by_path $self->{path})
		1808	unless $self->default_region;
		1809
736	}	1810	1
		1811	}
737		1812
738	# remove extcmds	1813	sub find;
739	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1814	sub find {
740	delete $EXTCMD{$name};	1815	my ($path, $origin) = @_;
		1816
		1817	$path = normalise $path, $origin && $origin->path;
		1818
		1819	cf::lock_wait "map_find:$path";
		1820
		1821	$cf::MAP{$path} || do {
		1822	my $guard = cf::lock_acquire "map_find:$path";
		1823	my $map = new_from_path cf::map $path
		1824	or return;
		1825
		1826	$map->{last_save} = $cf::RUNTIME;
		1827
		1828	$map->load_header
		1829	or return;
		1830
		1831	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1832	# doing this can freeze the server in a sync job, obviously
		1833	#$cf::WAIT_FOR_TICK->wait;
		1834	$map->reset;
		1835	undef $guard;
		1836	return find $path;
		1837	}
		1838
		1839	$cf::MAP{$path} = $map
		1840	}
		1841	}
		1842
		1843	sub pre_load { }
		1844	sub post_load { }
		1845
		1846	sub load {
		1847	my ($self) = @_;
		1848
		1849	local $self->{deny_reset} = 1; # loading can take a long time
		1850
		1851	my $path = $self->{path};
		1852
741	}	1853	{
		1854	my $guard = cf::lock_acquire "map_load:$path";
742		1855
743	if (my $cb = $pkg->can ("unload")) {	1856	return if $self->in_memory != cf::MAP_SWAPPED;
744	eval {	1857
745	$cb->($pkg);	1858	$self->in_memory (cf::MAP_LOADING);
		1859
		1860	$self->alloc;
		1861
		1862	$self->pre_load;
		1863	Coro::cede;
		1864
		1865	$self->_load_objects ($self->{load_path}, 1)
		1866	or return;
		1867
		1868	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1869	if delete $self->{load_original};
		1870
		1871	if (my $uniq = $self->uniq_path) {
		1872	utf8::encode $uniq;
		1873	if (aio_open $uniq, O_RDONLY, 0) {
		1874	$self->clear_unique_items;
		1875	$self->_load_objects ($uniq, 0);
746	1	1876	}
747	} or warn "$pkg unloaded, but with errors: $@";	1877	}
748	}
749		1878
750	Symbol::delete_package $pkg;	1879	Coro::cede;
751	}	1880	# now do the right thing for maps
		1881	$self->link_multipart_objects;
		1882	$self->difficulty ($self->estimate_difficulty)
		1883	unless $self->difficulty;
		1884	Coro::cede;
752		1885
753	sub load_extensions {	1886	unless ($self->{deny_activate}) {
754	for my $ext (<$LIBDIR/*.ext>) {	1887	$self->decay_objects;
755	next unless -r $ext;	1888	$self->fix_auto_apply;
756	eval {	1889	$self->update_buttons;
757	load_extension $ext;	1890	Coro::cede;
758	1	1891	$self->set_darkness_map;
759	} or warn "$ext not loaded: $@";	1892	Coro::cede;
760	}	1893	$self->activate;
761	}	1894	}
762		1895
763	#############################################################################	1896	$self->{last_save} = $cf::RUNTIME;
764	# load/save/clean perl data associated with a map	1897	$self->last_access ($cf::RUNTIME);
765		1898
766	*cf::mapsupport::on_clean = sub {	1899	$self->in_memory (cf::MAP_IN_MEMORY);
		1900	}
		1901
		1902	$self->post_load;
		1903	}
		1904
		1905	sub customise_for {
		1906	my ($self, $ob) = @_;
		1907
		1908	return find "~" . $ob->name . "/" . $self->{path}
		1909	if $self->per_player;
		1910
		1911	# return find "?party/" . $ob->name . "/" . $self->{path}
		1912	# if $self->per_party;
		1913
		1914	$self
		1915	}
		1916
		1917	# find and load all maps in the 3x3 area around a map
		1918	sub load_neighbours {
767	my ($map) = @_;	1919	my ($map) = @_;
768		1920
769	my $path = $map->tmpname;	1921	my @neigh; # diagonal neighbours
770	defined $path or return;
771		1922
772	unlink "$path.pst";	1923	for (0 .. 3) {
773	};	1924	my $neigh = $map->tile_path ($_)
		1925	or next;
		1926	$neigh = find $neigh, $map
		1927	or next;
		1928	$neigh->load;
774		1929
775	attach_to_maps prio => -10000, package => cf::mapsupport::;	1930	push @neigh,
		1931	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		1932	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1933	}
776		1934
777	#############################################################################	1935	for (grep defined $_->[0], @neigh) {
778	# load/save perl data associated with player->ob objects	1936	my ($path, $origin) = @$_;
779		1937	my $neigh = find $path, $origin
780	sub all_objects(@) {	1938	or next;
781	@_, map all_objects ($_->inv), @_	1939	$neigh->load;
		1940	}
782	}	1941	}
783		1942
784	# TODO: compatibility cruft, remove when no longer needed	1943	sub find_sync {
785	attach_to_players	1944	my ($path, $origin) = @_;
786	on_load => sub {
787	my ($pl, $path) = @_;
788		1945
789	for my $o (all_objects $pl->ob) {	1946	cf::sync_job { find $path, $origin }
790	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1947	}
791	$o->set_ob_key_value ("_perl_data");
792		1948
793	%$o = %{ Storable::thaw pack "H*", $value };	1949	sub do_load_sync {
		1950	my ($map) = @_;
		1951
		1952	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		1953	if $Coro::current != $Coro::main;
		1954
		1955	cf::sync_job { $map->load };
		1956	}
		1957
		1958	our %MAP_PREFETCH;
		1959	our $MAP_PREFETCHER = undef;
		1960
		1961	sub find_async {
		1962	my ($path, $origin, $load) = @_;
		1963
		1964	$path = normalise $path, $origin && $origin->{path};
		1965
		1966	if (my $map = $cf::MAP{$path}) {
		1967	return $map if !$load || $map->in_memory == cf::MAP_IN_MEMORY;
		1968	}
		1969
		1970	$MAP_PREFETCH{$path} |= $load;
		1971
		1972	$MAP_PREFETCHER ||= cf::async {
		1973	while (%MAP_PREFETCH) {
		1974	while (my ($k, $v) = each %MAP_PREFETCH) {
		1975	if (my $map = find $k) {
		1976	$map->load if $v;
		1977	}
		1978
		1979	delete $MAP_PREFETCH{$k};
794	}	1980	}
795	}	1981	}
		1982	undef $MAP_PREFETCHER;
		1983	};
		1984	$MAP_PREFETCHER->prio (6);
		1985
		1986	()
		1987	}
		1988
		1989	sub save {
		1990	my ($self) = @_;
		1991
		1992	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1993
		1994	$self->{last_save} = $cf::RUNTIME;
		1995
		1996	return unless $self->dirty;
		1997
		1998	my $save = $self->save_path; utf8::encode $save;
		1999	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2000
		2001	$self->{load_path} = $save;
		2002
		2003	return if $self->{deny_save};
		2004
		2005	local $self->{last_access} = $self->last_access;#d#
		2006
		2007	cf::async {
		2008	$_->contr->save for $self->players;
		2009	};
		2010
		2011	if ($uniq) {
		2012	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2013	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2014	} else {
		2015	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
796	},	2016	}
797	;	2017	}
798		2018
799	#############################################################################	2019	sub swap_out {
		2020	my ($self) = @_;
800		2021
801	=head2 CORE EXTENSIONS	2022	# save first because save cedes
		2023	$self->save;
802		2024
803	Functions and methods that extend core crossfire objects.	2025	my $lock = cf::lock_acquire "map_data:" . $self->path;
		2026
		2027	return if $self->players;
		2028	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2029	return if $self->{deny_save};
		2030
		2031	$self->clear;
		2032	$self->in_memory (cf::MAP_SWAPPED);
		2033	}
		2034
		2035	sub reset_at {
		2036	my ($self) = @_;
		2037
		2038	# TODO: safety, remove and allow resettable per-player maps
		2039	return 1e99 if $self->{deny_reset};
		2040
		2041	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2042	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2043
		2044	$time + $to
		2045	}
		2046
		2047	sub should_reset {
		2048	my ($self) = @_;
		2049
		2050	$self->reset_at <= $cf::RUNTIME
		2051	}
		2052
		2053	sub reset {
		2054	my ($self) = @_;
		2055
		2056	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2057
		2058	return if $self->players;
		2059
		2060	warn "resetting map ", $self->path;
		2061
		2062	$self->in_memory (cf::MAP_SWAPPED);
		2063
		2064	# need to save uniques path
		2065	unless ($self->{deny_save}) {
		2066	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2067
		2068	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2069	if $uniq;
		2070	}
		2071
		2072	delete $cf::MAP{$self->path};
		2073
		2074	$self->clear;
		2075
		2076	$_->clear_links_to ($self) for values %cf::MAP;
		2077
		2078	$self->unlink_save;
		2079	$self->destroy;
		2080	}
		2081
		2082	my $nuke_counter = "aaaa";
		2083
		2084	sub nuke {
		2085	my ($self) = @_;
		2086
		2087	delete $cf::MAP{$self->path};
		2088
		2089	$self->unlink_save;
		2090
		2091	bless $self, "cf::map";
		2092	delete $self->{deny_reset};
		2093	$self->{deny_save} = 1;
		2094	$self->reset_timeout (1);
		2095	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2096
		2097	$cf::MAP{$self->path} = $self;
		2098
		2099	$self->reset; # polite request, might not happen
		2100	}
		2101
		2102	=item $maps = cf::map::tmp_maps
		2103
		2104	Returns an arrayref with all map paths of currently instantiated and saved
		2105	maps. May block.
		2106
		2107	=cut
		2108
		2109	sub tmp_maps() {
		2110	[
		2111	map {
		2112	utf8::decode $_;
		2113	/\.map$/
		2114	? normalise $_
		2115	: ()
		2116	} @{ aio_readdir $TMPDIR or [] }
		2117	]
		2118	}
		2119
		2120	=item $maps = cf::map::random_maps
		2121
		2122	Returns an arrayref with all map paths of currently instantiated and saved
		2123	random maps. May block.
		2124
		2125	=cut
		2126
		2127	sub random_maps() {
		2128	[
		2129	map {
		2130	utf8::decode $_;
		2131	/\.map$/
		2132	? normalise "?random/$_"
		2133	: ()
		2134	} @{ aio_readdir $RANDOMDIR or [] }
		2135	]
		2136	}
		2137
		2138	=item cf::map::unique_maps
		2139
		2140	Returns an arrayref of paths of all shared maps that have
		2141	instantiated unique items. May block.
		2142
		2143	=cut
		2144
		2145	sub unique_maps() {
		2146	[
		2147	map {
		2148	utf8::decode $_;
		2149	/\.map$/
		2150	? normalise $_
		2151	: ()
		2152	} @{ aio_readdir $UNIQUEDIR or [] }
		2153	]
		2154	}
		2155
		2156	package cf;
		2157
		2158	=back
		2159
		2160	=head3 cf::object
		2161
		2162	=cut
		2163
		2164	package cf::object;
804		2165
805	=over 4	2166	=over 4
806		2167
807	=item cf::player::exists $login	2168	=item $ob->inv_recursive
808		2169
809	Returns true when the given account exists.	2170	Returns the inventory of the object _and_ their inventories, recursively.
810		2171
811	=cut	2172	=cut
812		2173
813	sub cf::player::exists($) {	2174	sub inv_recursive_;
814	cf::player::find $_[0]	2175	sub inv_recursive_ {
815	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2176	map { $_, inv_recursive_ $_->inv } @_
816	}	2177	}
		2178
		2179	sub inv_recursive {
		2180	inv_recursive_ inv $_[0]
		2181	}
		2182
		2183	package cf;
		2184
		2185	=back
		2186
		2187	=head3 cf::object::player
		2188
		2189	=over 4
817		2190
818	=item $player_object->reply ($npc, $msg[, $flags])	2191	=item $player_object->reply ($npc, $msg[, $flags])
819		2192
820	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2193	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
821	can be C<undef>. Does the right thing when the player is currently in a	2194	can be C<undef>. Does the right thing when the player is currently in a
…		…
823		2196
824	=cut	2197	=cut
825		2198
826	# rough implementation of a future "reply" method that works	2199	# rough implementation of a future "reply" method that works
827	# with dialog boxes.	2200	# with dialog boxes.
		2201	#TODO: the first argument must go, split into a $npc->reply_to ( method
828	sub cf::object::player::reply($$$;$) {	2202	sub cf::object::player::reply($$$;$) {
829	my ($self, $npc, $msg, $flags) = @_;	2203	my ($self, $npc, $msg, $flags) = @_;
830		2204
831	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2205	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
832		2206
833	if ($self->{record_replies}) {	2207	if ($self->{record_replies}) {
834	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2208	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2209
835	} else {	2210	} else {
		2211	my $pl = $self->contr;
		2212
		2213	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2214	my $dialog = $pl->{npc_dialog};
		2215	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2216
		2217	} else {
836	$msg = $npc->name . " says: $msg" if $npc;	2218	$msg = $npc->name . " says: $msg" if $npc;
837	$self->message ($msg, $flags);	2219	$self->message ($msg, $flags);
		2220	}
838	}	2221	}
839	}	2222	}
840		2223
841	=item $player->ext_reply ($msgid, $msgtype, %msg)	2224	=item $object->send_msg ($channel, $msg, $color, [extra...])
842		2225
843	Sends an ext reply to the player.
844
845	=cut	2226	=cut
846		2227
847	sub cf::player::ext_reply($$$%) {	2228	sub cf::object::send_msg {
848	my ($self, $id, %msg) = @_;	2229	my $pl = shift->contr
849		2230	or return;
850	$msg{msgid} = $id;	2231	$pl->send_msg (@_);
851
852	$self->send ("ext " . to_json \%msg);
853	}	2232	}
854		2233
855	=item $player_object->may ("access")	2234	=item $player_object->may ("access")
856		2235
857	Returns wether the given player is authorized to access resource "access"	2236	Returns wether the given player is authorized to access resource "access"
…		…
866	(ref $cf::CFG{"may_$access"}	2245	(ref $cf::CFG{"may_$access"}
867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2246	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
868	: $cf::CFG{"may_$access"})	2247	: $cf::CFG{"may_$access"})
869	}	2248	}
870		2249
871	=cut	2250	=item $player_object->enter_link
872		2251
873	#############################################################################	2252	Freezes the player and moves him/her to a special map (C<{link}>).
		2253
		2254	The player should be reasonably safe there for short amounts of time. You
		2255	I<MUST> call C<leave_link> as soon as possible, though.
		2256
		2257	Will never block.
		2258
		2259	=item $player_object->leave_link ($map, $x, $y)
		2260
		2261	Moves the player out of the special C<{link}> map onto the specified
		2262	map. If the map is not valid (or omitted), the player will be moved back
		2263	to the location he/she was before the call to C<enter_link>, or, if that
		2264	fails, to the emergency map position.
		2265
		2266	Might block.
		2267
		2268	=cut
		2269
		2270	sub link_map {
		2271	unless ($LINK_MAP) {
		2272	$LINK_MAP = cf::map::find "{link}"
		2273	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2274	$LINK_MAP->load;
		2275	}
		2276
		2277	$LINK_MAP
		2278	}
		2279
		2280	sub cf::object::player::enter_link {
		2281	my ($self) = @_;
		2282
		2283	$self->deactivate_recursive;
		2284
		2285	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2286
		2287	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2288	if $self->map && $self->map->{path} ne "{link}";
		2289
		2290	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2291	}
		2292
		2293	sub cf::object::player::leave_link {
		2294	my ($self, $map, $x, $y) = @_;
		2295
		2296	return unless $self->contr->active;
		2297
		2298	my $link_pos = delete $self->{_link_pos};
		2299
		2300	unless ($map) {
		2301	# restore original map position
		2302	($map, $x, $y) = @{ $link_pos || [] };
		2303	$map = cf::map::find $map;
		2304
		2305	unless ($map) {
		2306	($map, $x, $y) = @$EMERGENCY_POSITION;
		2307	$map = cf::map::find $map
		2308	or die "FATAL: cannot load emergency map\n";
		2309	}
		2310	}
		2311
		2312	($x, $y) = (-1, -1)
		2313	unless (defined $x) && (defined $y);
		2314
		2315	# use -1 or undef as default coordinates, not 0, 0
		2316	($x, $y) = ($map->enter_x, $map->enter_y)
		2317	if $x <=0 && $y <= 0;
		2318
		2319	$map->load;
		2320	$map->load_neighbours;
		2321
		2322	return unless $self->contr->active;
		2323	$self->activate_recursive;
		2324
		2325	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2326	$self->enter_map ($map, $x, $y);
		2327	}
		2328
		2329	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2330
		2331	Moves the player to the given map-path and coordinates by first freezing
		2332	her, loading and preparing them map, calling the provided $check callback
		2333	that has to return the map if sucecssful, and then unfreezes the player on
		2334	the new (success) or old (failed) map position. In either case, $done will
		2335	be called at the end of this process.
		2336
		2337	=cut
		2338
		2339	our $GOTOGEN;
		2340
		2341	sub cf::object::player::goto {
		2342	my ($self, $path, $x, $y, $check, $done) = @_;
		2343
		2344	# do generation counting so two concurrent goto's will be executed in-order
		2345	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2346
		2347	$self->enter_link;
		2348
		2349	(async {
		2350	my $map = eval {
		2351	my $map = cf::map::find $path;
		2352
		2353	if ($map) {
		2354	$map = $map->customise_for ($self);
		2355	$map = $check->($map) if $check && $map;
		2356	} else {
		2357	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2358	}
		2359
		2360	$map
		2361	};
		2362
		2363	if ($@) {
		2364	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2365	LOG llevError | logBacktrace, Carp::longmess $@;
		2366	}
		2367
		2368	if ($gen == $self->{_goto_generation}) {
		2369	delete $self->{_goto_generation};
		2370	$self->leave_link ($map, $x, $y);
		2371	}
		2372
		2373	$done->() if $done;
		2374	})->prio (1);
		2375	}
		2376
		2377	=item $player_object->enter_exit ($exit_object)
		2378
		2379	=cut
		2380
		2381	sub parse_random_map_params {
		2382	my ($spec) = @_;
		2383
		2384	my $rmp = { # defaults
		2385	xsize => (cf::rndm 15, 40),
		2386	ysize => (cf::rndm 15, 40),
		2387	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2388	#layout => string,
		2389	};
		2390
		2391	for (split /\n/, $spec) {
		2392	my ($k, $v) = split /\s+/, $_, 2;
		2393
		2394	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2395	}
		2396
		2397	$rmp
		2398	}
		2399
		2400	sub prepare_random_map {
		2401	my ($exit) = @_;
		2402
		2403	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2404
		2405	# all this does is basically replace the /! path by
		2406	# a new random map path (?random/...) with a seed
		2407	# that depends on the exit object
		2408
		2409	my $rmp = parse_random_map_params $exit->msg;
		2410
		2411	if ($exit->map) {
		2412	$rmp->{region} = $exit->region->name;
		2413	$rmp->{origin_map} = $exit->map->path;
		2414	$rmp->{origin_x} = $exit->x;
		2415	$rmp->{origin_y} = $exit->y;
		2416	}
		2417
		2418	$rmp->{random_seed} ||= $exit->random_seed;
		2419
		2420	my $data = cf::to_json $rmp;
		2421	my $md5 = Digest::MD5::md5_hex $data;
		2422	my $meta = "$RANDOMDIR/$md5.meta";
		2423
		2424	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2425	aio_write $fh, 0, (length $data), $data, 0;
		2426	undef $fh;
		2427	aio_rename "$meta~", $meta;
		2428
		2429	$exit->slaying ("?random/$md5");
		2430	$exit->msg (undef);
		2431	}
		2432	}
		2433
		2434	sub cf::object::player::enter_exit {
		2435	my ($self, $exit) = @_;
		2436
		2437	return unless $self->type == cf::PLAYER;
		2438
		2439	if ($exit->slaying eq "/!") {
		2440	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2441	# the problem is that $exit might not survive long enough
		2442	# so it needs to be done right now, right here
		2443	cf::sync_job { prepare_random_map $exit };
		2444	}
		2445
		2446	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2447	my $hp = $exit->stats->hp;
		2448	my $sp = $exit->stats->sp;
		2449
		2450	$self->enter_link;
		2451
		2452	# if exit is damned, update players death & WoR home-position
		2453	$self->contr->savebed ($slaying, $hp, $sp)
		2454	if $exit->flag (FLAG_DAMNED);
		2455
		2456	(async {
		2457	$self->deactivate_recursive; # just to be sure
		2458	unless (eval {
		2459	$self->goto ($slaying, $hp, $sp);
		2460
		2461	1;
		2462	}) {
		2463	$self->message ("Something went wrong deep within the crossfire server. "
		2464	. "I'll try to bring you back to the map you were before. "
		2465	. "Please report this to the dungeon master!",
		2466	cf::NDI_UNIQUE | cf::NDI_RED);
		2467
		2468	warn "ERROR in enter_exit: $@";
		2469	$self->leave_link;
		2470	}
		2471	})->prio (1);
		2472	}
		2473
		2474	=head3 cf::client
		2475
		2476	=over 4
		2477
		2478	=item $client->send_drawinfo ($text, $flags)
		2479
		2480	Sends a drawinfo packet to the client. Circumvents output buffering so
		2481	should not be used under normal circumstances.
		2482
		2483	=cut
		2484
		2485	sub cf::client::send_drawinfo {
		2486	my ($self, $text, $flags) = @_;
		2487
		2488	utf8::encode $text;
		2489	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2490	}
		2491
		2492	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2493
		2494	Send a drawinfo or msg packet to the client, formatting the msg for the
		2495	client if neccessary. C<$type> should be a string identifying the type of
		2496	the message, with C<log> being the default. If C<$color> is negative, suppress
		2497	the message unless the client supports the msg packet.
		2498
		2499	=cut
		2500
		2501	sub cf::client::send_msg {
		2502	my ($self, $channel, $msg, $color, @extra) = @_;
		2503
		2504	$msg = $self->pl->expand_cfpod ($msg);
		2505
		2506	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2507
		2508	if (ref $channel) {
		2509	# send meta info to client, if not yet sent
		2510	unless (exists $self->{channel}{$channel->{id}}) {
		2511	$self->{channel}{$channel->{id}} = $channel;
		2512	$self->ext_msg (channel_info => $channel);
		2513	}
		2514
		2515	$channel = $channel->{id};
		2516	}
		2517
		2518	return unless @extra || length $msg;
		2519
		2520	if ($self->can_msg) {
		2521	# default colour, mask it out
		2522	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2523	if $color & cf::NDI_DEF;
		2524
		2525	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2526	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2527	} else {
		2528	if ($color >= 0) {
		2529	# replace some tags by gcfclient-compatible ones
		2530	for ($msg) {
		2531	1 while
		2532	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2533	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2534	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2535	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2536	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2537	}
		2538
		2539	$color &= cf::NDI_COLOR_MASK;
		2540
		2541	utf8::encode $msg;
		2542
		2543	if (0 && $msg =~ /\[/) {
		2544	# COMMAND/INFO
		2545	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2546	} else {
		2547	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2548	$self->send_packet ("drawinfo $color $msg")
		2549	}
		2550	}
		2551	}
		2552	}
		2553
		2554	=item $client->ext_msg ($type, @msg)
		2555
		2556	Sends an ext event to the client.
		2557
		2558	=cut
		2559
		2560	sub cf::client::ext_msg($$@) {
		2561	my ($self, $type, @msg) = @_;
		2562
		2563	my $extcmd = $self->extcmd;
		2564
		2565	if ($extcmd == 2) {
		2566	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2567	} elsif ($extcmd == 1) { # TODO: remove
		2568	push @msg, msgtype => "event_$type";
		2569	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2570	}
		2571	}
		2572
		2573	=item $client->ext_reply ($msgid, @msg)
		2574
		2575	Sends an ext reply to the client.
		2576
		2577	=cut
		2578
		2579	sub cf::client::ext_reply($$@) {
		2580	my ($self, $id, @msg) = @_;
		2581
		2582	if ($self->extcmd == 2) {
		2583	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2584	} elsif ($self->ns->extcmd == 1) {
		2585	#TODO: version 1, remove
		2586	unshift @msg, msgtype => "reply", msgid => $id;
		2587	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2588	}
		2589	}
		2590
		2591	=item $success = $client->query ($flags, "text", \&cb)
		2592
		2593	Queues a query to the client, calling the given callback with
		2594	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2595	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2596
		2597	Queries can fail, so check the return code. Or don't, as queries will
		2598	become reliable at some point in the future.
		2599
		2600	=cut
		2601
		2602	sub cf::client::query {
		2603	my ($self, $flags, $text, $cb) = @_;
		2604
		2605	return unless $self->state == ST_PLAYING
		2606	|| $self->state == ST_SETUP
		2607	|| $self->state == ST_CUSTOM;
		2608
		2609	$self->state (ST_CUSTOM);
		2610
		2611	utf8::encode $text;
		2612	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2613
		2614	$self->send_packet ($self->{query_queue}[0][0])
		2615	if @{ $self->{query_queue} } == 1;
		2616
		2617	1
		2618	}
		2619
		2620	cf::client->attach (
		2621	on_connect => sub {
		2622	my ($ns) = @_;
		2623
		2624	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2625	},
		2626	on_reply => sub {
		2627	my ($ns, $msg) = @_;
		2628
		2629	# this weird shuffling is so that direct followup queries
		2630	# get handled first
		2631	my $queue = delete $ns->{query_queue}
		2632	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2633
		2634	(shift @$queue)->[1]->($msg);
		2635	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2636
		2637	push @{ $ns->{query_queue} }, @$queue;
		2638
		2639	if (@{ $ns->{query_queue} } == @$queue) {
		2640	if (@$queue) {
		2641	$ns->send_packet ($ns->{query_queue}[0][0]);
		2642	} else {
		2643	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2644	}
		2645	}
		2646	},
		2647	on_exticmd => sub {
		2648	my ($ns, $buf) = @_;
		2649
		2650	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2651
		2652	if (ref $msg) {
		2653	my ($type, $reply, @payload) =
		2654	"ARRAY" eq ref $msg
		2655	? @$msg
		2656	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2657
		2658	my @reply;
		2659
		2660	if (my $cb = $EXTICMD{$type}) {
		2661	@reply = $cb->($ns, @payload);
		2662	}
		2663
		2664	$ns->ext_reply ($reply, @reply)
		2665	if $reply;
		2666
		2667	} else {
		2668	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2669	}
		2670
		2671	cf::override;
		2672	},
		2673	);
		2674
		2675	=item $client->async (\&cb)
		2676
		2677	Create a new coroutine, running the specified callback. The coroutine will
		2678	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2679	or loss of connection).
		2680
		2681	=cut
		2682
		2683	sub cf::client::async {
		2684	my ($self, $cb) = @_;
		2685
		2686	my $coro = &Coro::async ($cb);
		2687
		2688	$coro->on_destroy (sub {
		2689	delete $self->{_coro}{$coro+0};
		2690	});
		2691
		2692	$self->{_coro}{$coro+0} = $coro;
		2693
		2694	$coro
		2695	}
		2696
		2697	cf::client->attach (
		2698	on_destroy => sub {
		2699	my ($ns) = @_;
		2700
		2701	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2702	},
		2703	);
		2704
		2705	=back
		2706
874		2707
875	=head2 SAFE SCRIPTING	2708	=head2 SAFE SCRIPTING
876		2709
877	Functions that provide a safe environment to compile and execute	2710	Functions that provide a safe environment to compile and execute
878	snippets of perl code without them endangering the safety of the server	2711	snippets of perl code without them endangering the safety of the server
…		…
885	our $safe = new Safe "safe";	2718	our $safe = new Safe "safe";
886	our $safe_hole = new Safe::Hole;	2719	our $safe_hole = new Safe::Hole;
887		2720
888	$SIG{FPE} = 'IGNORE';	2721	$SIG{FPE} = 'IGNORE';
889		2722
890	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2723	$safe->permit_only (Opcode::opset qw(
		2724	:base_core :base_mem :base_orig :base_math
		2725	grepstart grepwhile mapstart mapwhile
		2726	sort time
		2727	));
891		2728
892	# here we export the classes and methods available to script code	2729	# here we export the classes and methods available to script code
893		2730
894	=pod	2731	=pod
895		2732
896	The following fucntions and emthods are available within a safe environment:	2733	The following functions and methods are available within a safe environment:
897		2734
898	cf::object contr pay_amount pay_player map	2735	cf::object
		2736	contr pay_amount pay_player map x y force_find force_add
		2737	insert remove name archname title slaying race
		2738
899	cf::object::player player	2739	cf::object::player
900	cf::player peaceful	2740	player
901	cf::map trigger	2741
		2742	cf::player
		2743	peaceful
		2744
		2745	cf::map
		2746	trigger
902		2747
903	=cut	2748	=cut
904		2749
905	for (	2750	for (
906	["cf::object" => qw(contr pay_amount pay_player map)],	2751	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2752	insert remove inv name archname title slaying race)],
907	["cf::object::player" => qw(player)],	2753	["cf::object::player" => qw(player)],
908	["cf::player" => qw(peaceful)],	2754	["cf::player" => qw(peaceful)],
909	["cf::map" => qw(trigger)],	2755	["cf::map" => qw(trigger)],
910	) {	2756	) {
911	no strict 'refs';	2757	no strict 'refs';
…		…
982	=back	2828	=back
983		2829
984	=cut	2830	=cut
985		2831
986	#############################################################################	2832	#############################################################################
		2833	# the server's init and main functions
987		2834
988	=head2 EXTENSION DATABASE SUPPORT	2835	sub load_facedata($) {
		2836	my ($path) = @_;
989		2837
990	Crossfire maintains a very simple database for extension use. It can	2838	my $enc = JSON::XS->new->utf8->canonical;
991	currently store anything that can be serialised using Storable, which
992	excludes objects.
993		2839
994	The parameter C<$family> should best start with the name of the extension	2840	warn "loading facedata from $path\n";
995	using it, it should be unique.
996		2841
997	=over 4	2842	my $facedata;
		2843	0 < aio_load $path, $facedata
		2844	or die "$path: $!";
998		2845
999	=item $hashref = cf::db_get $family	2846	$facedata = Coro::Storable::thaw $facedata;
1000		2847
1001	Return a hashref for use by the extension C<$family>, which can be	2848	$facedata->{version} == 2
1002	modified. After modifications, you have to call C<cf::db_dirty> or	2849	or cf::cleanup "$path: version mismatch, cannot proceed.";
1003	C<cf::db_sync>.
1004		2850
1005	=item $value = cf::db_get $family => $key	2851	# patch in the exptable
1006		2852	$facedata->{resource}{"res/exp_table"} = {
1007	Returns a single value from the database	2853	type => FT_RSRC,
1008		2854	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
1009	=item cf::db_put $family => $hashref
1010
1011	Stores the given family hashref into the database. Updates are delayed, if
1012	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1013
1014	=item cf::db_put $family => $key => $value
1015
1016	Stores the given C<$value> in the family hash. Updates are delayed, if you
1017	want the data to be synced to disk immediately, use C<cf::db_sync>.
1018
1019	=item cf::db_dirty
1020
1021	Marks the database as dirty, to be updated at a later time.
1022
1023	=item cf::db_sync
1024
1025	Immediately write the database to disk I<if it is dirty>.
1026
1027	=cut
1028
1029	our $DB;
1030
1031	{
1032	my $path = cf::localdir . "/database.pst";
1033
1034	sub db_load() {
1035	warn "loading database $path\n";#d# remove later
1036	$DB = stat $path ? Storable::retrieve $path : { };
1037	}
1038
1039	my $pid;
1040
1041	sub db_save() {
1042	warn "saving database $path\n";#d# remove later
1043	waitpid $pid, 0 if $pid;
1044	if (0 == ($pid = fork)) {
1045	$DB->{_meta}{version} = 1;
1046	Storable::nstore $DB, "$path~";
1047	rename "$path~", $path;
1048	cf::_exit 0 if defined $pid;
1049	}
1050	}
1051
1052	my $dirty;
1053
1054	sub db_sync() {
1055	db_save if $dirty;
1056	undef $dirty;
1057	}
1058
1059	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1060	db_sync;
1061	});	2855	};
		2856	cf::cede_to_tick;
1062		2857
1063	sub db_dirty() {
1064	$dirty = 1;
1065	$idle->start;
1066	}	2858	{
		2859	my $faces = $facedata->{faceinfo};
1067		2860
1068	sub db_get($;$) {	2861	while (my ($face, $info) = each %$faces) {
1069	@_ >= 2	2862	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1070	? $DB->{$_[0]}{$_[1]}	2863	cf::face::set_visibility $idx, $info->{visibility};
1071	: ($DB->{$_[0]} ||= { })	2864	cf::face::set_magicmap $idx, $info->{magicmap};
1072	}	2865	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		2866	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1073		2867
1074	sub db_put($$;$) {	2868	cf::cede_to_tick;
1075	if (@_ >= 3) {
1076	$DB->{$_[0]}{$_[1]} = $_[2];
1077	} else {
1078	$DB->{$_[0]} = $_[1];
1079	}
1080	db_dirty;
1081	}
1082
1083	attach_global
1084	prio => 10000,
1085	on_cleanup => sub {
1086	db_sync;
1087	},	2869	}
		2870
		2871	while (my ($face, $info) = each %$faces) {
		2872	next unless $info->{smooth};
		2873	my $idx = cf::face::find $face
		2874	or next;
		2875	if (my $smooth = cf::face::find $info->{smooth}) {
		2876	cf::face::set_smooth $idx, $smooth;
		2877	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2878	} else {
		2879	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2880	}
		2881
		2882	cf::cede_to_tick;
		2883	}
1088	;	2884	}
1089	}
1090		2885
1091	#############################################################################	2886	{
1092	# the server's main()	2887	my $anims = $facedata->{animinfo};
		2888
		2889	while (my ($anim, $info) = each %$anims) {
		2890	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2891	cf::cede_to_tick;
		2892	}
		2893
		2894	cf::anim::invalidate_all; # d'oh
		2895	}
		2896
		2897	{
		2898	# TODO: for gcfclient pleasure, we should give resources
		2899	# that gcfclient doesn't grok a >10000 face index.
		2900	my $res = $facedata->{resource};
		2901
		2902	my $soundconf = delete $res->{"res/sound.conf"};
		2903
		2904	while (my ($name, $info) = each %$res) {
		2905	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2906	my $data;
		2907
		2908	if ($info->{type} & 1) {
		2909	# prepend meta info
		2910
		2911	my $meta = $enc->encode ({
		2912	name => $name,
		2913	%{ $info->{meta} || {} },
		2914	});
		2915
		2916	$data = pack "(w/a*)*", $meta, $info->{data};
		2917	} else {
		2918	$data = $info->{data};
		2919	}
		2920
		2921	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		2922	cf::face::set_type $idx, $info->{type};
		2923
		2924	cf::cede_to_tick;
		2925	}
		2926
		2927	if ($soundconf) {
		2928	$soundconf = $enc->decode (delete $soundconf->{data});
		2929
		2930	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		2931	my $sound = $soundconf->{compat}[$_]
		2932	or next;
		2933
		2934	my $face = cf::face::find "sound/$sound->[1]";
		2935	cf::sound::set $sound->[0] => $face;
		2936	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		2937	}
		2938
		2939	while (my ($k, $v) = each %{$soundconf->{event}}) {
		2940	my $face = cf::face::find "sound/$v";
		2941	cf::sound::set $k => $face;
		2942	}
		2943	}
		2944	}
		2945
		2946	1
		2947	}
		2948
		2949	register_exticmd fx_want => sub {
		2950	my ($ns, $want) = @_;
		2951
		2952	while (my ($k, $v) = each %$want) {
		2953	$ns->fx_want ($k, $v);
		2954	}
		2955	};
		2956
		2957	sub reload_regions {
		2958	load_resource_file "$MAPDIR/regions"
		2959	or die "unable to load regions file\n";
		2960
		2961	for (cf::region::list) {
		2962	$_->{match} = qr/$_->{match}/
		2963	if exists $_->{match};
		2964	}
		2965	}
		2966
		2967	sub reload_facedata {
		2968	load_facedata "$DATADIR/facedata"
		2969	or die "unable to load facedata\n";
		2970	}
		2971
		2972	sub reload_archetypes {
		2973	load_resource_file "$DATADIR/archetypes"
		2974	or die "unable to load archetypes\n";
		2975	#d# NEED to laod twice to resolve forward references
		2976	# this really needs to be done in an extra post-pass
		2977	# (which needs to be synchronous, so solve it differently)
		2978	load_resource_file "$DATADIR/archetypes"
		2979	or die "unable to load archetypes\n";
		2980	}
		2981
		2982	sub reload_treasures {
		2983	load_resource_file "$DATADIR/treasures"
		2984	or die "unable to load treasurelists\n";
		2985	}
		2986
		2987	sub reload_resources {
		2988	warn "reloading resource files...\n";
		2989
		2990	reload_regions;
		2991	reload_facedata;
		2992	#reload_archetypes;#d#
		2993	reload_archetypes;
		2994	reload_treasures;
		2995
		2996	warn "finished reloading resource files\n";
		2997	}
		2998
		2999	sub init {
		3000	reload_resources;
		3001	}
1093		3002
1094	sub cfg_load {	3003	sub cfg_load {
1095	open my $fh, "<:utf8", cf::confdir . "/config"	3004	open my $fh, "<:utf8", "$CONFDIR/config"
1096	or return;	3005	or return;
1097		3006
1098	local $/;	3007	local $/;
1099	*CFG = YAML::Syck::Load <$fh>;	3008	*CFG = YAML::Syck::Load <$fh>;
		3009
		3010	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3011
		3012	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3013	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3014
		3015	if (exists $CFG{mlockall}) {
		3016	eval {
		3017	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3018	and die "WARNING: m(un)lockall failed: $!\n";
		3019	};
		3020	warn $@ if $@;
		3021	}
1100	}	3022	}
1101		3023
1102	sub main {	3024	sub main {
		3025	# we must not ever block the main coroutine
		3026	local $Coro::idle = sub {
		3027	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3028	(async {
		3029	Event::one_event;
		3030	})->prio (Coro::PRIO_MAX);
		3031	};
		3032
1103	cfg_load;	3033	cfg_load;
1104	db_load;	3034	db_init;
1105	load_extensions;	3035	load_extensions;
		3036
		3037	$TICK_WATCHER->start;
1106	Event::loop;	3038	Event::loop;
1107	}	3039	}
1108		3040
1109	#############################################################################	3041	#############################################################################
1110	# initialisation	3042	# initialisation and cleanup
1111		3043
1112	sub _perl_reload(&) {	3044	# install some emergency cleanup handlers
		3045	BEGIN {
		3046	for my $signal (qw(INT HUP TERM)) {
		3047	Event->signal (
		3048	reentrant => 0,
		3049	data => WF_AUTOCANCEL,
		3050	signal => $signal,
		3051	prio => 0,
		3052	cb => sub {
		3053	cf::cleanup "SIG$signal";
		3054	},
		3055	);
		3056	}
		3057	}
		3058
		3059	sub write_runtime {
		3060	my $runtime = "$LOCALDIR/runtime";
		3061
		3062	# first touch the runtime file to show we are still running:
		3063	# the fsync below can take a very very long time.
		3064
		3065	IO::AIO::aio_utime $runtime, undef, undef;
		3066
		3067	my $guard = cf::lock_acquire "write_runtime";
		3068
		3069	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3070	or return;
		3071
		3072	my $value = $cf::RUNTIME + 90 + 10;
		3073	# 10 is the runtime save interval, for a monotonic clock
		3074	# 60 allows for the watchdog to kill the server.
		3075
		3076	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3077	and return;
		3078
		3079	# always fsync - this file is important
		3080	aio_fsync $fh
		3081	and return;
		3082
		3083	# touch it again to show we are up-to-date
		3084	aio_utime $fh, undef, undef;
		3085
		3086	close $fh
		3087	or return;
		3088
		3089	aio_rename "$runtime~", $runtime
		3090	and return;
		3091
		3092	warn "runtime file written.\n";
		3093
		3094	1
		3095	}
		3096
		3097	sub emergency_save() {
		3098	my $freeze_guard = cf::freeze_mainloop;
		3099
		3100	warn "enter emergency perl save\n";
		3101
		3102	cf::sync_job {
		3103	# use a peculiar iteration method to avoid tripping on perl
		3104	# refcount bugs in for. also avoids problems with players
		3105	# and maps saved/destroyed asynchronously.
		3106	warn "begin emergency player save\n";
		3107	for my $login (keys %cf::PLAYER) {
		3108	my $pl = $cf::PLAYER{$login} or next;
		3109	$pl->valid or next;
		3110	$pl->save;
		3111	}
		3112	warn "end emergency player save\n";
		3113
		3114	warn "begin emergency map save\n";
		3115	for my $path (keys %cf::MAP) {
		3116	my $map = $cf::MAP{$path} or next;
		3117	$map->valid or next;
		3118	$map->save;
		3119	}
		3120	warn "end emergency map save\n";
		3121
		3122	warn "begin emergency database checkpoint\n";
		3123	BDB::db_env_txn_checkpoint $DB_ENV;
		3124	warn "end emergency database checkpoint\n";
		3125	};
		3126
		3127	warn "leave emergency perl save\n";
		3128	}
		3129
		3130	sub post_cleanup {
1113	my ($msg) = @_;	3131	my ($make_core) = @_;
1114		3132
1115	$msg->("reloading...");	3133	warn Carp::longmess "post_cleanup backtrace"
		3134	if $make_core;
		3135	}
1116		3136
1117	eval {	3137	sub do_reload_perl() {
1118	# cancel all watchers	3138	# can/must only be called in main
		3139	if ($Coro::current != $Coro::main) {
		3140	warn "can only reload from main coroutine";
		3141	return;
		3142	}
		3143
		3144	warn "reloading...";
		3145
		3146	warn "entering sync_job";
		3147
		3148	cf::sync_job {
		3149	cf::write_runtime; # external watchdog should not bark
		3150	cf::emergency_save;
		3151	cf::write_runtime; # external watchdog should not bark
		3152
		3153	warn "syncing database to disk";
		3154	BDB::db_env_txn_checkpoint $DB_ENV;
		3155
		3156	# if anything goes wrong in here, we should simply crash as we already saved
		3157
		3158	warn "cancelling all WF_AUTOCANCEL watchers";
1119	for (Event::all_watchers) {	3159	for (Event::all_watchers) {
1120	$_->cancel if $_->data & WF_AUTOCANCEL;	3160	$_->cancel if $_->data & WF_AUTOCANCEL;
1121	}	3161	}
1122		3162
1123	# unload all extensions	3163	warn "flushing outstanding aio requests";
1124	for (@exts) {	3164	for (;;) {
1125	$msg->("unloading <$_>");	3165	BDB::flush;
1126	unload_extension $_;	3166	IO::AIO::flush;
		3167	Coro::cede;
		3168	last unless IO::AIO::nreqs || BDB::nreqs;
		3169	warn "iterate...";
		3170	}
		3171
		3172	++$RELOAD;
		3173
		3174	warn "cancelling all extension coros";
		3175	$_->cancel for values %EXT_CORO;
		3176	%EXT_CORO = ();
		3177
		3178	warn "removing commands";
		3179	%COMMAND = ();
		3180
		3181	warn "removing ext/exti commands";
		3182	%EXTCMD = ();
		3183	%EXTICMD = ();
		3184
		3185	warn "unloading/nuking all extensions";
		3186	for my $pkg (@EXTS) {
		3187	warn "... unloading $pkg";
		3188
		3189	if (my $cb = $pkg->can ("unload")) {
		3190	eval {
		3191	$cb->($pkg);
		3192	1
		3193	} or warn "$pkg unloaded, but with errors: $@";
1127	}	3194	}
1128		3195
		3196	warn "... nuking $pkg";
		3197	Symbol::delete_package $pkg;
		3198	}
		3199
1129	# unload all modules loaded from $LIBDIR	3200	warn "unloading all perl modules loaded from $LIBDIR";
1130	while (my ($k, $v) = each %INC) {	3201	while (my ($k, $v) = each %INC) {
1131	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3202	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1132		3203
1133	$msg->("removing <$k>");	3204	warn "... unloading $k";
1134	delete $INC{$k};	3205	delete $INC{$k};
1135		3206
1136	$k =~ s/\.pm$//;	3207	$k =~ s/\.pm$//;
1137	$k =~ s/\//::/g;	3208	$k =~ s/\//::/g;
1138		3209
…		…
1141	}	3212	}
1142		3213
1143	Symbol::delete_package $k;	3214	Symbol::delete_package $k;
1144	}	3215	}
1145		3216
1146	# sync database to disk
1147	cf::db_sync;
1148
1149	# get rid of safe::, as good as possible	3217	warn "getting rid of safe::, as good as possible";
1150	Symbol::delete_package "safe::$_"	3218	Symbol::delete_package "safe::$_"
1151	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3219	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1152		3220
1153	# remove register_script_function callbacks
1154	# TODO
1155
1156	# unload cf.pm "a bit"	3221	warn "unloading cf.pm \"a bit\"";
1157	delete $INC{"cf.pm"};	3222	delete $INC{"cf.pm"};
		3223	delete $INC{"cf/pod.pm"};
1158		3224
1159	# don't, removes xs symbols, too,	3225	# don't, removes xs symbols, too,
1160	# and global variables created in xs	3226	# and global variables created in xs
1161	#Symbol::delete_package __PACKAGE__;	3227	#Symbol::delete_package __PACKAGE__;
1162		3228
1163	# reload cf.pm	3229	warn "unload completed, starting to reload now";
		3230
1164	$msg->("reloading cf.pm");	3231	warn "reloading cf.pm";
1165	require cf;	3232	require cf;
		3233	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1166		3234
1167	# load config and database again	3235	warn "loading config and database again";
1168	cf::cfg_load;	3236	cf::cfg_load;
1169	cf::db_load;
1170		3237
1171	# load extensions	3238	warn "loading extensions";
1172	$msg->("load extensions");
1173	cf::load_extensions;	3239	cf::load_extensions;
1174		3240
1175	# reattach attachments to objects	3241	warn "reattaching attachments to objects/players";
1176	$msg->("reattach");	3242	_global_reattach; # objects, sockets
1177	_global_reattach;	3243	warn "reattaching attachments to maps";
		3244	reattach $_ for values %MAP;
		3245	warn "reattaching attachments to players";
		3246	reattach $_ for values %PLAYER;
		3247
		3248	warn "leaving sync_job";
		3249
		3250	1
		3251	} or do {
		3252	warn $@;
		3253	warn "error while reloading, exiting.";
		3254	exit 1;
1178	};	3255	};
1179	$msg->($@) if $@;
1180		3256
1181	$msg->("reloaded");	3257	warn "reloaded";
1182	};	3258	};
1183		3259
1184	sub perl_reload() {	3260	our $RELOAD_WATCHER; # used only during reload
1185	_perl_reload {	3261
1186	warn $_[0];	3262	sub reload_perl() {
1187	print "$_[0]\n";	3263	# doing reload synchronously and two reloads happen back-to-back,
		3264	# coro crashes during coro_state_free->destroy here.
		3265
		3266	$RELOAD_WATCHER ||= Event->timer (
		3267	reentrant => 0,
		3268	after => 0,
		3269	data => WF_AUTOCANCEL,
		3270	cb => sub {
		3271	do_reload_perl;
		3272	undef $RELOAD_WATCHER;
		3273	},
1188	};	3274	);
1189	}	3275	}
1190		3276
1191	register "<global>", __PACKAGE__;
1192
1193	register_command "perl-reload" => sub {	3277	register_command "reload" => sub {
1194	my ($who, $arg) = @_;	3278	my ($who, $arg) = @_;
1195		3279
1196	if ($who->flag (FLAG_WIZ)) {	3280	if ($who->flag (FLAG_WIZ)) {
1197	_perl_reload {	3281	$who->message ("reloading server.");
1198	warn $_[0];	3282	async { reload_perl };
1199	$who->message ($_[0]);	3283	}
		3284	};
		3285
		3286	unshift @INC, $LIBDIR;
		3287
		3288	my $bug_warning = 0;
		3289
		3290	our @WAIT_FOR_TICK;
		3291	our @WAIT_FOR_TICK_BEGIN;
		3292
		3293	sub wait_for_tick {
		3294	return unless $TICK_WATCHER->is_active;
		3295	return if $Coro::current == $Coro::main;
		3296
		3297	my $signal = new Coro::Signal;
		3298	push @WAIT_FOR_TICK, $signal;
		3299	$signal->wait;
		3300	}
		3301
		3302	sub wait_for_tick_begin {
		3303	return unless $TICK_WATCHER->is_active;
		3304	return if $Coro::current == $Coro::main;
		3305
		3306	my $signal = new Coro::Signal;
		3307	push @WAIT_FOR_TICK_BEGIN, $signal;
		3308	$signal->wait;
		3309	}
		3310
		3311	my $min = 1e6;#d#
		3312	my $avg = 10;
		3313	$TICK_WATCHER = Event->timer (
		3314	reentrant => 0,
		3315	parked => 1,
		3316	prio => 0,
		3317	at => $NEXT_TICK || $TICK,
		3318	data => WF_AUTOCANCEL,
		3319	cb => sub {
		3320	if ($Coro::current != $Coro::main) {
		3321	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3322	unless ++$bug_warning > 10;
		3323	return;
		3324	}
		3325
		3326	$NOW = $tick_start = Event::time;
		3327
		3328	cf::server_tick; # one server iteration
		3329
		3330	0 && sync_job {#d#
		3331	for(1..10) {
		3332	my $t = Event::time;
		3333	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3334	or die;
		3335
		3336	$map->width (50);
		3337	$map->height (50);
		3338	$map->alloc;
		3339	$map->_load_objects ("/tmp/x.map", 1);
		3340	my $t = Event::time - $t;
		3341
		3342	#next unless $t < 0.0013;#d#
		3343	if ($t < $min) {
		3344	$min = $t;
		3345	}
		3346	$avg = $avg * 0.99 + $t * 0.01;
		3347	}
		3348	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3349	exit 0;
		3350	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1200	};	3351	};
1201	}
1202	};
1203		3352
1204	unshift @INC, $LIBDIR;	3353	$RUNTIME += $TICK;
1205
1206	$TICK_WATCHER = Event->timer (
1207	prio => 0,
1208	at => $NEXT_TICK || 1,
1209	data => WF_AUTOCANCEL,
1210	cb => sub {
1211	cf::server_tick; # one server iteration
1212
1213	my $NOW = Event::time;
1214	$NEXT_TICK += $TICK;	3354	$NEXT_TICK += $TICK;
		3355
		3356	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3357	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3358	Coro::async_pool {
		3359	write_runtime
		3360	or warn "ERROR: unable to write runtime file: $!";
		3361	};
		3362	}
		3363
		3364	# my $AFTER = Event::time;
		3365	# warn $AFTER - $NOW;#d#
		3366
		3367	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3368	$sig->send;
		3369	}
		3370	while (my $sig = shift @WAIT_FOR_TICK) {
		3371	$sig->send;
		3372	}
		3373
		3374	$NOW = Event::time;
1215		3375
1216	# if we are delayed by four ticks or more, skip them all	3376	# if we are delayed by four ticks or more, skip them all
1217	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3377	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1218		3378
1219	$TICK_WATCHER->at ($NEXT_TICK);	3379	$TICK_WATCHER->at ($NEXT_TICK);
1220	$TICK_WATCHER->start;	3380	$TICK_WATCHER->start;
		3381
		3382	$LOAD = ($NOW - $tick_start) / $TICK;
		3383	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3384
		3385	_post_tick;
		3386
		3387
1221	},	3388	},
1222	);	3389	);
1223		3390
		3391	{
		3392	BDB::max_poll_time $TICK * 0.1;
		3393	$BDB_POLL_WATCHER = Event->io (
		3394	reentrant => 0,
		3395	fd => BDB::poll_fileno,
		3396	poll => 'r',
		3397	prio => 0,
		3398	data => WF_AUTOCANCEL,
		3399	cb => \&BDB::poll_cb,
		3400	);
		3401	BDB::min_parallel 8;
		3402
		3403	BDB::set_sync_prepare {
		3404	my $status;
		3405	my $current = $Coro::current;
		3406	(
		3407	sub {
		3408	$status = $!;
		3409	$current->ready; undef $current;
		3410	},
		3411	sub {
		3412	Coro::schedule while defined $current;
		3413	$! = $status;
		3414	},
		3415	)
		3416	};
		3417
		3418	unless ($DB_ENV) {
		3419	$DB_ENV = BDB::db_env_create;
		3420
		3421	cf::sync_job {
		3422	eval {
		3423	BDB::db_env_open
		3424	$DB_ENV,
		3425	$BDBDIR,
		3426	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3427	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3428	0666;
		3429
		3430	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3431
		3432	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3433	$DB_ENV->set_lk_detect;
		3434	};
		3435
		3436	cf::cleanup "db_env_open(db): $@" if $@;
		3437	};
		3438	}
		3439	}
		3440
		3441	{
		3442	IO::AIO::min_parallel 8;
		3443
		3444	undef $Coro::AIO::WATCHER;
1224	IO::AIO::max_poll_time $TICK * 0.2;	3445	IO::AIO::max_poll_time $TICK * 0.1;
1225		3446	$AIO_POLL_WATCHER = Event->io (
1226	Event->io (fd => IO::AIO::poll_fileno,	3447	reentrant => 0,
1227	poll => 'r',
1228	prio => 5,
1229	data => WF_AUTOCANCEL,	3448	data => WF_AUTOCANCEL,
		3449	fd => IO::AIO::poll_fileno,
		3450	poll => 'r',
		3451	prio => 6,
1230	cb => \&IO::AIO::poll_cb);	3452	cb => \&IO::AIO::poll_cb,
		3453	);
		3454	}
		3455
		3456	my $_log_backtrace;
		3457
		3458	sub _log_backtrace {
		3459	my ($msg, @addr) = @_;
		3460
		3461	$msg =~ s/\n//;
		3462
		3463	# limit the # of concurrent backtraces
		3464	if ($_log_backtrace < 2) {
		3465	++$_log_backtrace;
		3466	async {
		3467	my @bt = fork_call {
		3468	@addr = map { sprintf "%x", $_ } @addr;
		3469	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3470	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3471	or die "addr2line: $!";
		3472
		3473	my @funcs;
		3474	my @res = <$fh>;
		3475	chomp for @res;
		3476	while (@res) {
		3477	my ($func, $line) = splice @res, 0, 2, ();
		3478	push @funcs, "[$func] $line";
		3479	}
		3480
		3481	@funcs
		3482	};
		3483
		3484	LOG llevInfo, "[ABT] $msg\n";
		3485	LOG llevInfo, "[ABT] $_\n" for @bt;
		3486	--$_log_backtrace;
		3487	};
		3488	} else {
		3489	LOG llevInfo, "[ABT] $msg\n";
		3490	LOG llevInfo, "[ABT] [suppressed]\n";
		3491	}
		3492	}
		3493
		3494	# load additional modules
		3495	use cf::pod;
		3496
		3497	END { cf::emergency_save }
1231		3498
1232	1	3499	1
1233		3500

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