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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.86 by root, Thu Dec 14 05:09:32 2006 UTC vs.
Revision 1.348 by root, Thu Aug 30 08:34:40 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 ();
		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
		49
		50	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
20		51
21	our %COMMAND = ();	52	our %COMMAND = ();
22	our %COMMAND_TIME = ();	53	our %COMMAND_TIME = ();
		54
		55	our @EXTS = (); # list of extension package names
23	our %EXTCMD = ();	56	our %EXTCMD = ();
		57	our %EXTICMD = ();
		58	our %EXT_CORO = (); # coroutines bound to extensions
		59	our %EXT_MAP = (); # pluggable maps
24		60
25	_init_vars;	61	our $RELOAD; # number of reloads so far
26
27	our @EVENT;	62	our @EVENT;
28	our $LIBDIR = maps_directory "perl";
29		63
30	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(!)
31	our $TICK_WATCHER;	77	our $TICK_WATCHER;
		78	our $AIO_POLL_WATCHER;
		79	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
32	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;
33		86
34	our %CFG;	87	our %CFG;
35		88
36	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;
37		119
38	#############################################################################	120	#############################################################################
39		121
40	=head2 GLOBAL VARIABLES	122	=head2 GLOBAL VARIABLES
41		123
…		…
43		125
44	=item $cf::UPTIME	126	=item $cf::UPTIME
45		127
46	The timestamp of the server start (so not actually an uptime).	128	The timestamp of the server start (so not actually an uptime).
47		129
48	=item $cf::LIBDIR	130	=item $cf::RUNTIME
49		131
50	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
51	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.
52		147
53	=item $cf::TICK	148	=item $cf::TICK
54		149
55	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.
56		161
57	=item %cf::CFG	162	=item %cf::CFG
58		163
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	164	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	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.
61		178
62	=back	179	=back
63		180
64	=cut	181	=cut
65		182
66	BEGIN {	183	BEGIN {
67	*CORE::GLOBAL::warn = sub {	184	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	185	my $msg = join "", @_;
		186
69	$msg .= "\n"	187	$msg .= "\n"
70	unless $msg =~ /\n$/;	188	unless $msg =~ /\n$/;
71		189
72	print STDERR "cfperl: $msg";	190	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		191
		192	utf8::encode $msg;
73	LOG llevError, "cfperl: $msg";	193	LOG llevError, $msg;
74	};	194	};
75	}	195	}
76		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';
77	@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)
78		204
79	# 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
80	# within the Safe compartment.	206	# within the Safe compartment.
81	for my $pkg (qw(	207	for my $pkg (qw(
		208	cf::global cf::attachable
82	cf::object cf::object::player	209	cf::object cf::object::player
83	cf::client_socket cf::player	210	cf::client cf::player
84	cf::arch cf::living	211	cf::arch cf::living
85	cf::map cf::party cf::region	212	cf::map cf::party cf::region
86	)) {	213	)) {
87	no strict 'refs';	214	no strict 'refs';
88	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	215	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
…		…
90		217
91	$Event::DIED = sub {	218	$Event::DIED = sub {
92	warn "error in event callback: @_";	219	warn "error in event callback: @_";
93	};	220	};
94		221
95	my %ext_pkg;	222	#############################################################################
96	my @exts;
97	my @hook;
98		223
99	=head2 UTILITY FUNCTIONS	224	=head2 UTILITY FUNCTIONS
100		225
101	=over 4	226	=over 4
102		227
103	=cut	228	=item dumpval $ref
104		229
105	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	}
106		250
107	=item $ref = cf::from_json $json	251	=item $ref = cf::from_json $json
108		252
109	Converts a JSON string into the corresponding perl data structure.	253	Converts a JSON string into the corresponding perl data structure.
110		254
111	=cut
112
113	sub from_json($) {
114	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
115	JSON::Syck::Load $_[0]
116	}
117
118	=item $json = cf::to_json $ref	255	=item $json = cf::to_json $ref
119		256
120	Converts a perl data structure into its JSON representation.	257	Converts a perl data structure into its JSON representation.
121		258
122	=cut	259	=cut
123		260
124	sub to_json($) {	261	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
125	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	262
126	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	Locks are *not* recursive, locking from the same coro twice results in a
		278	deadlocked coro.
		279
		280	Lock names should begin with a unique identifier (for example, cf::map::find
		281	uses map_find and cf::map::load uses map_load).
		282
		283	=item $locked = cf::lock_active $string
		284
		285	Return true if the lock is currently active, i.e. somebody has locked it.
		286
		287	=cut
		288
		289	our %LOCK;
		290
		291	sub lock_wait($) {
		292	my ($key) = @_;
		293
		294	# wait for lock, if any
		295	while ($LOCK{$key}) {
		296	push @{ $LOCK{$key} }, $Coro::current;
		297	Coro::schedule;
		298	}
		299	}
		300
		301	sub lock_acquire($) {
		302	my ($key) = @_;
		303
		304	# wait, to be sure we are not locked
		305	lock_wait $key;
		306
		307	$LOCK{$key} = [];
		308
		309	Coro::guard {
		310	# wake up all waiters, to be on the safe side
		311	$_->ready for @{ delete $LOCK{$key} };
		312	}
		313	}
		314
		315	sub lock_active($) {
		316	my ($key) = @_;
		317
		318	! ! $LOCK{$key}
		319	}
		320
		321	sub freeze_mainloop {
		322	return unless $TICK_WATCHER->is_active;
		323
		324	my $guard = Coro::guard {
		325	$TICK_WATCHER->start;
		326	};
		327	$TICK_WATCHER->stop;
		328	$guard
		329	}
		330
		331	=item cf::get_slot $time[, $priority[, $name]]
		332
		333	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		334	This call blocks and returns only when you have at least C<$time> seconds
		335	of cpu time till the next tick. The slot is only valid till the next cede.
		336
		337	The optional C<$name> can be used to identify the job to run. It might be
		338	used for statistical purposes and should identify the same time-class.
		339
		340	Useful for short background jobs.
		341
		342	=cut
		343
		344	our @SLOT_QUEUE;
		345	our $SLOT_QUEUE;
		346
		347	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		348	$SLOT_QUEUE = Coro::async {
		349	my $signal = new Coro::Signal;
		350
		351	while () {
		352	next_job:
		353	my $avail = cf::till_tick;
		354	if ($avail > 0.01) {
		355	for (0 .. $#SLOT_QUEUE) {
		356	if ($SLOT_QUEUE[$_][0] < $avail) {
		357	my $job = splice @SLOT_QUEUE, $_, 1, ();
		358	$job->[2]->send;
		359	Coro::cede;
		360	goto next_job;
		361	}
		362	}
		363	}
		364
		365	if (@SLOT_QUEUE) {
		366	# we do not use wait_For_tick() as it returns immediately when tick is inactive
		367	push @cf::WAIT_FOR_TICK, $signal;
		368	$signal->wait;
		369	} else {
		370	Coro::schedule;
		371	}
		372	}
		373	};
		374
		375	sub get_slot($;$$) {
		376	my ($time, $pri, $name) = @_;
		377
		378	$time = $TICK * .6 if $time > $TICK * .6;
		379	my $sig = new Coro::Signal;
		380
		381	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		382	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		383	$SLOT_QUEUE->ready;
		384	$sig->wait;
		385	}
		386
		387	=item cf::async { BLOCK }
		388
		389	Currently the same as Coro::async_pool, meaning you cannot use
		390	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		391	thing you are allowed to do is call C<prio> on it.
		392
		393	=cut
		394
		395	BEGIN { *async = \&Coro::async_pool }
		396
		397	=item cf::sync_job { BLOCK }
		398
		399	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		400	is always able to handle events or runnable, as Crossfire TRT is only
		401	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		402	acceptable.
		403
		404	If it must be done, put the blocking parts into C<sync_job>. This will run
		405	the given BLOCK in another coroutine while waiting for the result. The
		406	server will be frozen during this time, so the block should either finish
		407	fast or be very important.
		408
		409	=cut
		410
		411	sub sync_job(&) {
		412	my ($job) = @_;
		413
		414	if ($Coro::current == $Coro::main) {
		415	my $time = Event::time;
		416
		417	# this is the main coro, too bad, we have to block
		418	# till the operation succeeds, freezing the server :/
		419
		420	# TODO: use suspend/resume instead
		421	# (but this is cancel-safe)
		422	my $freeze_guard = freeze_mainloop;
		423
		424	my $busy = 1;
		425	my @res;
		426
		427	(async {
		428	@res = eval { $job->() };
		429	warn $@ if $@;
		430	undef $busy;
		431	})->prio (Coro::PRIO_MAX);
		432
		433	while ($busy) {
		434	Coro::cede or Event::one_event;
		435	}
		436
		437	$time = Event::time - $time;
		438
		439	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		440	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		441
		442	$tick_start += $time; # do not account sync jobs to server load
		443
		444	wantarray ? @res : $res[0]
		445	} else {
		446	# we are in another coroutine, how wonderful, everything just works
		447
		448	$job->()
		449	}
		450	}
		451
		452	=item $coro = cf::async_ext { BLOCK }
		453
		454	Like async, but this coro is automatically being canceled when the
		455	extension calling this is being unloaded.
		456
		457	=cut
		458
		459	sub async_ext(&) {
		460	my $cb = shift;
		461
		462	my $coro = &Coro::async ($cb);
		463
		464	$coro->on_destroy (sub {
		465	delete $EXT_CORO{$coro+0};
		466	});
		467	$EXT_CORO{$coro+0} = $coro;
		468
		469	$coro
		470	}
		471
		472	=item fork_call { }, $args
		473
		474	Executes the given code block with the given arguments in a seperate
		475	process, returning the results. Everything must be serialisable with
		476	Coro::Storable. May, of course, block. Note that the executed sub may
		477	never block itself or use any form of Event handling.
		478
		479	=cut
		480
		481	sub fork_call(&@) {
		482	my ($cb, @args) = @_;
		483
		484	# we seemingly have to make a local copy of the whole thing,
		485	# otherwise perl prematurely frees the stuff :/
		486	# TODO: investigate and fix (liekly this will be rather laborious)
		487
		488	my @res = Coro::Util::fork_eval {
		489	reset_signals;
		490	&$cb
		491	}, @args;
		492
		493	wantarray ? @res : $res[-1]
		494	}
		495
		496	=item $value = cf::db_get $family => $key
		497
		498	Returns a single value from the environment database.
		499
		500	=item cf::db_put $family => $key => $value
		501
		502	Stores the given C<$value> in the family. It can currently store binary
		503	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		504
		505	=cut
		506
		507	our $DB;
		508
		509	sub db_init {
		510	unless ($DB) {
		511	$DB = BDB::db_create $DB_ENV;
		512
		513	cf::sync_job {
		514	eval {
		515	$DB->set_flags (BDB::CHKSUM);
		516
		517	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		518	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		519	cf::cleanup "db_open(db): $!" if $!;
		520	};
		521	cf::cleanup "db_open(db): $@" if $@;
		522	};
		523	}
		524	}
		525
		526	sub db_get($$) {
		527	my $key = "$_[0]/$_[1]";
		528
		529	cf::sync_job {
		530	BDB::db_get $DB, undef, $key, my $data;
		531
		532	$! ? ()
		533	: $data
		534	}
		535	}
		536
		537	sub db_put($$$) {
		538	BDB::dbreq_pri 4;
		539	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		540	}
		541
		542	=item cf::cache $id => [$paths...], $processversion => $process
		543
		544	Generic caching function that returns the value of the resource $id,
		545	caching and regenerating as required.
		546
		547	This function can block.
		548
		549	=cut
		550
		551	sub cache {
		552	my ($id, $src, $processversion, $process) = @_;
		553
		554	my $meta =
		555	join "\x00",
		556	$processversion,
		557	map {
		558	aio_stat $_
		559	and Carp::croak "$_: $!";
		560
		561	($_, (stat _)[7,9])
		562	} @$src;
		563
		564	my $dbmeta = db_get cache => "$id/meta";
		565	if ($dbmeta ne $meta) {
		566	# changed, we may need to process
		567
		568	my @data;
		569	my $md5;
		570
		571	for (0 .. $#$src) {
		572	0 <= aio_load $src->[$_], $data[$_]
		573	or Carp::croak "$src->[$_]: $!";
		574	}
		575
		576	# if processing is expensive, check
		577	# checksum first
		578	if (1) {
		579	$md5 =
		580	join "\x00",
		581	$processversion,
		582	map {
		583	cf::cede_to_tick;
		584	($src->[$_], Digest::MD5::md5_hex $data[$_])
		585	} 0.. $#$src;
		586
		587
		588	my $dbmd5 = db_get cache => "$id/md5";
		589	if ($dbmd5 eq $md5) {
		590	db_put cache => "$id/meta", $meta;
		591
		592	return db_get cache => "$id/data";
		593	}
		594	}
		595
		596	my $t1 = Time::HiRes::time;
		597	my $data = $process->(\@data);
		598	my $t2 = Time::HiRes::time;
		599
		600	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		601
		602	db_put cache => "$id/data", $data;
		603	db_put cache => "$id/md5" , $md5;
		604	db_put cache => "$id/meta", $meta;
		605
		606	return $data;
		607	}
		608
		609	db_get cache => "$id/data"
		610	}
		611
		612	=item cf::datalog type => key => value, ...
		613
		614	Log a datalog packet of the given type with the given key-value pairs.
		615
		616	=cut
		617
		618	sub datalog($@) {
		619	my ($type, %kv) = @_;
		620	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
127	}	621	}
128		622
129	=back	623	=back
130		624
131	=cut	625	=cut
132		626
133	#############################################################################	627	#############################################################################
134		628
135	=head2 EVENTS AND OBJECT ATTACHMENTS	629	=head2 ATTACHABLE OBJECTS
		630
		631	Many objects in crossfire are so-called attachable objects. That means you can
		632	attach callbacks/event handlers (a collection of which is called an "attachment")
		633	to it. All such attachable objects support the following methods.
		634
		635	In the following description, CLASS can be any of C<global>, C<object>
		636	C<player>, C<client> or C<map> (i.e. the attachable objects in
		637	Crossfire TRT).
136		638
137	=over 4	639	=over 4
138		640
139	=item $object->attach ($attachment, key => $value...)
140
141	=item $object->detach ($attachment)
142
143	Attach/detach a pre-registered attachment to an object.
144
145	=item $player->attach ($attachment, key => $value...)
146
147	=item $player->detach ($attachment)
148
149	Attach/detach a pre-registered attachment to a player.
150
151	=item $map->attach ($attachment, key => $value...)	641	=item $attachable->attach ($attachment, key => $value...)
152		642
153	=item $map->detach ($attachment)	643	=item $attachable->detach ($attachment)
154		644
155	Attach/detach a pre-registered attachment to a map.	645	Attach/detach a pre-registered attachment to a specific object and give it
		646	the specified key/value pairs as arguments.
156		647
157	=item $bool = $object->attached ($name)	648	Example, attach a minesweeper attachment to the given object, making it a
		649	10x10 minesweeper game:
158		650
159	=item $bool = $player->attached ($name)	651	$obj->attach (minesweeper => width => 10, height => 10);
160		652
161	=item $bool = $map->attached ($name)	653	=item $bool = $attachable->attached ($name)
162		654
163	Checks wether the named attachment is currently attached to the object.	655	Checks wether the named attachment is currently attached to the object.
164		656
165	=item cf::attach_global ...	657	=item cf::CLASS->attach ...
166		658
167	Attach handlers for global events.	659	=item cf::CLASS->detach ...
168		660
169	This and all following C<attach_*>-functions expect any number of the	661	Define an anonymous attachment and attach it to all objects of the given
170	following handler/hook descriptions:	662	CLASS. See the next function for an explanation of its arguments.
		663
		664	You can attach to global events by using the C<cf::global> class.
		665
		666	Example, log all player logins:
		667
		668	cf::player->attach (
		669	on_login => sub {
		670	my ($pl) = @_;
		671	...
		672	},
		673	);
		674
		675	Example, attach to the jeweler skill:
		676
		677	cf::object->attach (
		678	type => cf::SKILL,
		679	subtype => cf::SK_JEWELER,
		680	on_use_skill => sub {
		681	my ($sk, $ob, $part, $dir, $msg) = @_;
		682	...
		683	},
		684	);
		685
		686	=item cf::CLASS::attachment $name, ...
		687
		688	Register an attachment by C<$name> through which attachable objects of the
		689	given CLASS can refer to this attachment.
		690
		691	Some classes such as crossfire maps and objects can specify attachments
		692	that are attached at load/instantiate time, thus the need for a name.
		693
		694	These calls expect any number of the following handler/hook descriptions:
171		695
172	=over 4	696	=over 4
173		697
174	=item prio => $number	698	=item prio => $number
175		699
…		…
177	by another C<prio> setting). Lower priority handlers get executed	701	by another C<prio> setting). Lower priority handlers get executed
178	earlier. The default priority is C<0>, and many built-in handlers are	702	earlier. The default priority is C<0>, and many built-in handlers are
179	registered at priority C<-1000>, so lower priorities should not be used	703	registered at priority C<-1000>, so lower priorities should not be used
180	unless you know what you are doing.	704	unless you know what you are doing.
181		705
		706	=item type => $type
		707
		708	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		709	given type of objects only (the additional parameter C<subtype> can be
		710	used to further limit to the given subtype).
		711
182	=item on_I<event> => \&cb	712	=item on_I<event> => \&cb
183		713
184	Call the given code reference whenever the named event happens (event is	714	Call the given code reference whenever the named event happens (event is
185	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	715	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
186	handlers are recognised generally depends on the type of object these	716	handlers are recognised generally depends on the type of object these
…		…
195	package and register them. Only handlers for eevents supported by the	725	package and register them. Only handlers for eevents supported by the
196	object/class are recognised.	726	object/class are recognised.
197		727
198	=back	728	=back
199		729
200	=item cf::attach_to_type $object_type, $subtype, ...	730	Example, define an attachment called "sockpuppet" that calls the given
		731	event handler when a monster attacks:
201		732
202	Attach handlers for a specific object type (e.g. TRANSPORT) and	733	cf::object::attachment sockpuppet =>
203	subtype. If C<$subtype> is zero or undef, matches all objects of the given	734	on_skill_attack => sub {
204	type.	735	my ($self, $victim) = @_;
205		736	...
206	=item cf::attach_to_objects ...
207
208	Attach handlers to all objects. Do not use this except for debugging or
209	very rare events, as handlers are (obviously) called for I<all> objects in
210	the game.
211
212	=item cf::attach_to_players ...
213
214	Attach handlers to all players.
215
216	=item cf::attach_to_maps ...
217
218	Attach handlers to all maps.
219
220	=item cf:register_attachment $name, ...
221
222	Register an attachment by name through which objects can refer to this
223	attachment.
224
225	=item cf:register_player_attachment $name, ...
226
227	Register an attachment by name through which players can refer to this
228	attachment.
229
230	=item cf:register_map_attachment $name, ...
231
232	Register an attachment by name through which maps can refer to this
233	attachment.
234
235	=cut
236
237	# the following variables are defined in .xs and must not be re-created
238	our @CB_GLOBAL = (); # registry for all global events
239	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
240	our @CB_PLAYER = ();
241	our @CB_TYPE = (); # registry for type (cf-object class) based events
242	our @CB_MAP = ();
243
244	my %attachment;
245
246	sub _attach_cb($\%$$$) {
247	my ($registry, $undo, $event, $prio, $cb) = @_;
248
249	use sort 'stable';
250
251	$cb = [$prio, $cb];
252
253	@{$registry->[$event]} = sort
254	{ $a->[0] cmp $b->[0] }
255	@{$registry->[$event] || []}, $cb;
256
257	push @{$undo->{cb}}, [$event, $cb];
258	}
259
260	# attach handles attaching event callbacks
261	# the only thing the caller has to do is pass the correct
262	# registry (== where the callback attaches to).
263	sub _attach(\@$@) {
264	my ($registry, $klass, @arg) = @_;
265
266	my $prio = 0;
267
268	my %undo = (
269	registry => $registry,
270	cb => [],
271	);
272
273	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
274
275	while (@arg) {
276	my $type = shift @arg;
277
278	if ($type eq "prio") {
279	$prio = shift @arg;
280
281	} elsif ($type eq "package") {
282	my $pkg = shift @arg;
283
284	while (my ($name, $id) = each %cb_id) {
285	if (my $cb = $pkg->can ($name)) {
286	_attach_cb $registry, %undo, $id, $prio, $cb;
287	}
288	}	737	}
289
290	} elsif (exists $cb_id{$type}) {
291	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
292
293	} elsif (ref $type) {
294	warn "attaching objects not supported, ignoring.\n";
295
296	} else {
297	shift @arg;
298	warn "attach argument '$type' not supported, ignoring.\n";
299	}
300	}
301
302	\%undo
303	}
304
305	sub _attach_attachment {
306	my ($obj, $name, %arg) = @_;
307
308	return if exists $obj->{_attachment}{$name};
309
310	my $res;
311
312	if (my $attach = $attachment{$name}) {
313	my $registry = $obj->registry;
314
315	for (@$attach) {
316	my ($klass, @attach) = @$_;
317	$res = _attach @$registry, $klass, @attach;
318	}
319
320	$obj->{$name} = \%arg;
321	} else {
322	warn "object uses attachment '$name' that is not available, postponing.\n";
323	}
324
325	$obj->{_attachment}{$name} = undef;
326
327	$res->{attachment} = $name;
328	$res
329	}
330
331	*cf::object::attach =
332	*cf::player::attach =
333	*cf::map::attach = sub {
334	my ($obj, $name, %arg) = @_;
335
336	_attach_attachment $obj, $name, %arg;
337	};
338
339	# all those should be optimised
340	*cf::object::detach =
341	*cf::player::detach =
342	*cf::map::detach = sub {
343	my ($obj, $name) = @_;
344
345	delete $obj->{_attachment}{$name};
346	reattach ($obj);
347	};
348
349	*cf::object::attached =
350	*cf::player::attached =
351	*cf::map::attached = sub {
352	my ($obj, $name) = @_;
353
354	exists $obj->{_attachment}{$name}
355	};
356
357	sub attach_global {
358	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
359	}
360
361	sub attach_to_type {
362	my $type = shift;
363	my $subtype = shift;
364
365	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
366	}
367
368	sub attach_to_objects {
369	_attach @CB_OBJECT, KLASS_OBJECT, @_
370	}
371
372	sub attach_to_players {
373	_attach @CB_PLAYER, KLASS_PLAYER, @_
374	}
375
376	sub attach_to_maps {
377	_attach @CB_MAP, KLASS_MAP, @_
378	}
379
380	sub register_attachment {
381	my $name = shift;
382
383	$attachment{$name} = [[KLASS_OBJECT, @_]];
384	}
385
386	sub register_player_attachment {
387	my $name = shift;
388
389	$attachment{$name} = [[KLASS_PLAYER, @_]];
390	}
391
392	sub register_map_attachment {
393	my $name = shift;
394
395	$attachment{$name} = [[KLASS_MAP, @_]];
396	}
397
398	our $override;
399	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
400
401	sub override {
402	$override = 1;
403	@invoke_results = ();
404	}
405
406	sub do_invoke {
407	my $event = shift;
408	my $callbacks = shift;
409
410	@invoke_results = ();
411
412	local $override;
413
414	for (@$callbacks) {
415	eval { &{$_->[1]} };
416
417	if ($@) {
418	warn "$@";
419	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
420	override;
421	}
422
423	return 1 if $override;
424	}
425
426	0	738	}
427	}
428		739
429	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	740	=item $attachable->valid
430
431	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
432
433	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
434
435	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
436
437	Generate a global/object/player/map-specific event with the given arguments.
438
439	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
440	removed in future versions), and there is no public API to access override
441	results (if you must, access C<@cf::invoke_results> directly).
442
443	=back
444
445	=cut
446
447	#############################################################################
448
449	=head2 METHODS VALID FOR ALL CORE OBJECTS
450
451	=over 4
452
453	=item $object->valid, $player->valid, $map->valid
454		741
455	Just because you have a perl object does not mean that the corresponding	742	Just because you have a perl object does not mean that the corresponding
456	C-level object still exists. If you try to access an object that has no	743	C-level object still exists. If you try to access an object that has no
457	valid C counterpart anymore you get an exception at runtime. This method	744	valid C counterpart anymore you get an exception at runtime. This method
458	can be used to test for existence of the C object part without causing an	745	can be used to test for existence of the C object part without causing an
459	exception.	746	exception.
460		747
		748	=cut
		749
		750	# the following variables are defined in .xs and must not be re-created
		751	our @CB_GLOBAL = (); # registry for all global events
		752	our @CB_ATTACHABLE = (); # registry for all attachables
		753	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		754	our @CB_PLAYER = ();
		755	our @CB_CLIENT = ();
		756	our @CB_TYPE = (); # registry for type (cf-object class) based events
		757	our @CB_MAP = ();
		758
		759	my %attachment;
		760
		761	sub cf::attachable::thawer_merge {
		762	# simply override everything except _meta
		763	local $_[0]{_meta};
		764	%{$_[0]} = %{$_[1]};
		765	}
		766
		767	sub _attach_cb($$$$) {
		768	my ($registry, $event, $prio, $cb) = @_;
		769
		770	use sort 'stable';
		771
		772	$cb = [$prio, $cb];
		773
		774	@{$registry->[$event]} = sort
		775	{ $a->[0] cmp $b->[0] }
		776	@{$registry->[$event] || []}, $cb;
		777	}
		778
		779	# hack
		780	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		781
		782	# attach handles attaching event callbacks
		783	# the only thing the caller has to do is pass the correct
		784	# registry (== where the callback attaches to).
		785	sub _attach {
		786	my ($registry, $klass, @arg) = @_;
		787
		788	my $object_type;
		789	my $prio = 0;
		790	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		791
		792	#TODO: get rid of this hack
		793	if ($attachable_klass{$klass}) {
		794	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		795	}
		796
		797	while (@arg) {
		798	my $type = shift @arg;
		799
		800	if ($type eq "prio") {
		801	$prio = shift @arg;
		802
		803	} elsif ($type eq "type") {
		804	$object_type = shift @arg;
		805	$registry = $CB_TYPE[$object_type] ||= [];
		806
		807	} elsif ($type eq "subtype") {
		808	defined $object_type or Carp::croak "subtype specified without type";
		809	my $object_subtype = shift @arg;
		810	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		811
		812	} elsif ($type eq "package") {
		813	my $pkg = shift @arg;
		814
		815	while (my ($name, $id) = each %cb_id) {
		816	if (my $cb = $pkg->can ($name)) {
		817	_attach_cb $registry, $id, $prio, $cb;
		818	}
		819	}
		820
		821	} elsif (exists $cb_id{$type}) {
		822	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		823
		824	} elsif (ref $type) {
		825	warn "attaching objects not supported, ignoring.\n";
		826
		827	} else {
		828	shift @arg;
		829	warn "attach argument '$type' not supported, ignoring.\n";
		830	}
		831	}
		832	}
		833
		834	sub _object_attach {
		835	my ($obj, $name, %arg) = @_;
		836
		837	return if exists $obj->{_attachment}{$name};
		838
		839	if (my $attach = $attachment{$name}) {
		840	my $registry = $obj->registry;
		841
		842	for (@$attach) {
		843	my ($klass, @attach) = @$_;
		844	_attach $registry, $klass, @attach;
		845	}
		846
		847	$obj->{$name} = \%arg;
		848	} else {
		849	warn "object uses attachment '$name' which is not available, postponing.\n";
		850	}
		851
		852	$obj->{_attachment}{$name} = undef;
		853	}
		854
		855	sub cf::attachable::attach {
		856	if (ref $_[0]) {
		857	_object_attach @_;
		858	} else {
		859	_attach shift->_attach_registry, @_;
		860	}
		861	_recalc_want;
		862	};
		863
		864	# all those should be optimised
		865	sub cf::attachable::detach {
		866	my ($obj, $name) = @_;
		867
		868	if (ref $obj) {
		869	delete $obj->{_attachment}{$name};
		870	reattach ($obj);
		871	} else {
		872	Carp::croak "cannot, currently, detach class attachments";
		873	}
		874	_recalc_want;
		875	};
		876
		877	sub cf::attachable::attached {
		878	my ($obj, $name) = @_;
		879
		880	exists $obj->{_attachment}{$name}
		881	}
		882
		883	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		884	eval "#line " . __LINE__ . " 'cf.pm'
		885	sub cf::\L$klass\E::_attach_registry {
		886	(\\\@CB_$klass, KLASS_$klass)
		887	}
		888
		889	sub cf::\L$klass\E::attachment {
		890	my \$name = shift;
		891
		892	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		893	}
		894	";
		895	die if $@;
		896	}
		897
		898	our $override;
		899	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		900
		901	sub override {
		902	$override = 1;
		903	@INVOKE_RESULTS = (@_);
		904	}
		905
		906	sub do_invoke {
		907	my $event = shift;
		908	my $callbacks = shift;
		909
		910	@INVOKE_RESULTS = ();
		911
		912	local $override;
		913
		914	for (@$callbacks) {
		915	eval { &{$_->[1]} };
		916
		917	if ($@) {
		918	warn "$@";
		919	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		920	override;
		921	}
		922
		923	return 1 if $override;
		924	}
		925
		926	0
		927	}
		928
		929	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		930
		931	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		932
		933	Generate an object-specific event with the given arguments.
		934
		935	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		936	removed in future versions), and there is no public API to access override
		937	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		938
461	=back	939	=back
462		940
463	=cut	941	=cut
464
465	*cf::object::valid =
466	*cf::player::valid =
467	*cf::map::valid = \&cf::_valid;
468		942
469	#############################################################################	943	#############################################################################
470	# object support	944	# object support
		945	#
471		946
472	sub instantiate {	947	sub _can_merge {
473	my ($obj, $data) = @_;	948	my ($ob1, $ob2) = @_;
474		949
475	$data = from_json $data;	950	local $Storable::canonical = 1;
		951	my $fob1 = Storable::freeze $ob1;
		952	my $fob2 = Storable::freeze $ob2;
476		953
477	for (@$data) {	954	$fob1 eq $fob2
478	my ($name, $args) = @$_;
479
480	$obj->attach ($name, %{$args || {} });
481	}
482	}	955	}
483		956
484	# basically do the same as instantiate, without calling instantiate
485	sub reattach {	957	sub reattach {
		958	# basically do the same as instantiate, without calling instantiate
486	my ($obj) = @_;	959	my ($obj) = @_;
		960
		961	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		962
487	my $registry = $obj->registry;	963	my $registry = $obj->registry;
488		964
489	@$registry = ();	965	@$registry = ();
490		966
491	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	967	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
492		968
493	for my $name (keys %{ $obj->{_attachment} || {} }) {	969	for my $name (keys %{ $obj->{_attachment} || {} }) {
494	if (my $attach = $attachment{$name}) {	970	if (my $attach = $attachment{$name}) {
495	for (@$attach) {	971	for (@$attach) {
496	my ($klass, @attach) = @$_;	972	my ($klass, @attach) = @$_;
497	_attach @$registry, $klass, @attach;	973	_attach $registry, $klass, @attach;
498	}	974	}
499	} else {	975	} else {
500	warn "object uses attachment '$name' that is not available, postponing.\n";	976	warn "object uses attachment '$name' that is not available, postponing.\n";
501	}	977	}
502	}	978	}
503	}	979	}
504		980
505	sub object_freezer_save {	981	cf::attachable->attach (
506	my ($filename, $rdata, $objs) = @_;
507
508	if (length $$rdata) {
509	warn sprintf "saving %s (%d,%d)\n",
510	$filename, length $$rdata, scalar @$objs;
511
512	if (open my $fh, ">:raw", "$filename~") {
513	chmod SAVE_MODE, $fh;
514	syswrite $fh, $$rdata;
515	close $fh;
516
517	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
518	chmod SAVE_MODE, $fh;
519	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
520	close $fh;
521	rename "$filename.pst~", "$filename.pst";
522	} else {
523	unlink "$filename.pst";
524	}
525
526	rename "$filename~", $filename;
527	} else {
528	warn "FATAL: $filename~: $!\n";
529	}
530	} else {
531	unlink $filename;
532	unlink "$filename.pst";
533	}
534	}
535
536	sub object_freezer_as_string {
537	my ($rdata, $objs) = @_;
538
539	use Data::Dumper;
540
541	$$rdata . Dumper $objs
542	}
543
544	sub object_thawer_load {
545	my ($filename) = @_;
546
547	local $/;
548
549	my $av;
550
551	#TODO: use sysread etc.
552	if (open my $data, "<:raw:perlio", $filename) {
553	$data = <$data>;
554	if (open my $pst, "<:raw:perlio", "$filename.pst") {
555	$av = eval { (Storable::thaw <$pst>)->{objs} };
556	}
557	return ($data, $av);
558	}
559
560	()
561	}
562
563	attach_to_objects
564	prio => -1000000,	982	prio => -1000000,
		983	on_instantiate => sub {
		984	my ($obj, $data) = @_;
		985
		986	$data = from_json $data;
		987
		988	for (@$data) {
		989	my ($name, $args) = @$_;
		990
		991	$obj->attach ($name, %{$args || {} });
		992	}
		993	},
		994	on_reattach => \&reattach,
565	on_clone => sub {	995	on_clone => sub {
566	my ($src, $dst) = @_;	996	my ($src, $dst) = @_;
567		997
568	@{$dst->registry} = @{$src->registry};	998	@{$dst->registry} = @{$src->registry};
569		999
570	%$dst = %$src;	1000	%$dst = %$src;
571		1001
572	%{$dst->{_attachment}} = %{$src->{_attachment}}	1002	%{$dst->{_attachment}} = %{$src->{_attachment}}
573	if exists $src->{_attachment};	1003	if exists $src->{_attachment};
574	},	1004	},
575	;	1005	);
		1006
		1007	sub object_freezer_save {
		1008	my ($filename, $rdata, $objs) = @_;
		1009
		1010	sync_job {
		1011	if (length $$rdata) {
		1012	warn sprintf "saving %s (%d,%d)\n",
		1013	$filename, length $$rdata, scalar @$objs;
		1014
		1015	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1016	chmod SAVE_MODE, $fh;
		1017	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1018	aio_fsync $fh if $cf::USE_FSYNC;
		1019	close $fh;
		1020
		1021	if (@$objs) {
		1022	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1023	chmod SAVE_MODE, $fh;
		1024	my $data = Storable::nfreeze { version => 1, objs => $objs };
		1025	aio_write $fh, 0, (length $data), $data, 0;
		1026	aio_fsync $fh if $cf::USE_FSYNC;
		1027	close $fh;
		1028	aio_rename "$filename.pst~", "$filename.pst";
		1029	}
		1030	} else {
		1031	aio_unlink "$filename.pst";
		1032	}
		1033
		1034	aio_rename "$filename~", $filename;
		1035	} else {
		1036	warn "FATAL: $filename~: $!\n";
		1037	}
		1038	} else {
		1039	aio_unlink $filename;
		1040	aio_unlink "$filename.pst";
		1041	}
		1042	}
		1043	}
		1044
		1045	sub object_freezer_as_string {
		1046	my ($rdata, $objs) = @_;
		1047
		1048	use Data::Dumper;
		1049
		1050	$$rdata . Dumper $objs
		1051	}
		1052
		1053	sub object_thawer_load {
		1054	my ($filename) = @_;
		1055
		1056	my ($data, $av);
		1057
		1058	(aio_load $filename, $data) >= 0
		1059	or return;
		1060
		1061	unless (aio_stat "$filename.pst") {
		1062	(aio_load "$filename.pst", $av) >= 0
		1063	or return;
		1064	$av = eval { (Storable::thaw $av)->{objs} };
		1065	}
		1066
		1067	warn sprintf "loading %s (%d)\n",
		1068	$filename, length $data, scalar @{$av || []};
		1069	return ($data, $av);
		1070	}
		1071
		1072	=head2 COMMAND CALLBACKS
		1073
		1074	=over 4
		1075
		1076	=cut
576		1077
577	#############################################################################	1078	#############################################################################
578	# command handling &c	1079	# command handling &c
579		1080
580	=item cf::register_command $name => \&callback($ob,$args);	1081	=item cf::register_command $name => \&callback($ob,$args);
…		…
593	push @{ $COMMAND{$name} }, [$caller, $cb];	1094	push @{ $COMMAND{$name} }, [$caller, $cb];
594	}	1095	}
595		1096
596	=item cf::register_extcmd $name => \&callback($pl,$packet);	1097	=item cf::register_extcmd $name => \&callback($pl,$packet);
597		1098
598	Register a callbackf ro execution when the client sends an extcmd packet.	1099	Register a callback for execution when the client sends an (synchronous)
		1100	extcmd packet. Ext commands will be processed in the order they are
		1101	received by the server, like other user commands. The first argument is
		1102	the logged-in player. Ext commands can only be processed after a player
		1103	has logged in successfully.
599		1104
600	If the callback returns something, it is sent back as if reply was being	1105	If the callback returns something, it is sent back as if reply was being
601	called.	1106	called.
602		1107
		1108	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1109
		1110	Register a callback for execution when the client sends an (asynchronous)
		1111	exticmd packet. Exti commands are processed by the server as soon as they
		1112	are received, i.e. out of order w.r.t. other commands. The first argument
		1113	is a client socket. Exti commands can be received anytime, even before
		1114	log-in.
		1115
		1116	If the callback returns something, it is sent back as if reply was being
		1117	called.
		1118
603	=cut	1119	=cut
604		1120
605	sub register_extcmd {	1121	sub register_extcmd {
606	my ($name, $cb) = @_;	1122	my ($name, $cb) = @_;
607		1123
608	my $caller = caller;
609	#warn "registering extcmd '$name' to '$caller'";
610
611	$EXTCMD{$name} = [$cb, $caller];	1124	$EXTCMD{$name} = $cb;
612	}	1125	}
613		1126
614	attach_to_players	1127	sub register_exticmd {
		1128	my ($name, $cb) = @_;
		1129
		1130	$EXTICMD{$name} = $cb;
		1131	}
		1132
		1133	cf::player->attach (
615	on_command => sub {	1134	on_command => sub {
616	my ($pl, $name, $params) = @_;	1135	my ($pl, $name, $params) = @_;
617		1136
618	my $cb = $COMMAND{$name}	1137	my $cb = $COMMAND{$name}
619	or return;	1138	or return;
…		…
625	cf::override;	1144	cf::override;
626	},	1145	},
627	on_extcmd => sub {	1146	on_extcmd => sub {
628	my ($pl, $buf) = @_;	1147	my ($pl, $buf) = @_;
629		1148
630	my $msg = eval { from_json $buf };	1149	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
631		1150
632	if (ref $msg) {	1151	if (ref $msg) {
		1152	my ($type, $reply, @payload) =
		1153	"ARRAY" eq ref $msg
		1154	? @$msg
		1155	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1156
		1157	my @reply;
		1158
633	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1159	if (my $cb = $EXTCMD{$type}) {
634	if (my %reply = $cb->[0]->($pl, $msg)) {	1160	@reply = $cb->($pl, @payload);
635	$pl->ext_reply ($msg->{msgid}, %reply);
636	}
637	}	1161	}
		1162
		1163	$pl->ext_reply ($reply, @reply)
		1164	if $reply;
		1165
638	} else {	1166	} else {
639	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1167	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
640	}	1168	}
641		1169
642	cf::override;	1170	cf::override;
643	},	1171	},
644	;	1172	);
		1173
		1174	sub load_extensions {
		1175	cf::sync_job {
		1176	my %todo;
		1177
		1178	for my $path (<$LIBDIR/*.ext>) {
		1179	next unless -r $path;
		1180
		1181	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1182	my $base = $1;
		1183	my $pkg = $1;
		1184	$pkg =~ s/[^[:word:]]/_/g;
		1185	$pkg = "ext::$pkg";
		1186
		1187	open my $fh, "<:utf8", $path
		1188	or die "$path: $!";
		1189
		1190	my $source = do { local $/; <$fh> };
		1191
		1192	my %ext = (
		1193	path => $path,
		1194	base => $base,
		1195	pkg => $pkg,
		1196	);
		1197
		1198	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1199	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1200
		1201	$ext{source} =
		1202	"package $pkg; use strict; use utf8;\n"
		1203	. "#line 1 \"$path\"\n{\n"
		1204	. $source
		1205	. "\n};\n1";
		1206
		1207	$todo{$base} = \%ext;
		1208	}
		1209
		1210	my %done;
		1211	while (%todo) {
		1212	my $progress;
		1213
		1214	while (my ($k, $v) = each %todo) {
		1215	for (split /,\s*/, $v->{meta}{depends}) {
		1216	goto skip
		1217	unless exists $done{$_};
		1218	}
		1219
		1220	warn "... loading '$k' into '$v->{pkg}'\n";
		1221
		1222	unless (eval $v->{source}) {
		1223	my $msg = $@ ? "$v->{path}: $@\n"
		1224	: "$v->{base}: extension inactive.\n";
		1225
		1226	if (exists $v->{meta}{mandatory}) {
		1227	warn $msg;
		1228	warn "mandatory extension failed to load, exiting.\n";
		1229	exit 1;
		1230	}
		1231
		1232	warn $msg;
		1233	}
		1234
		1235	$done{$k} = delete $todo{$k};
		1236	push @EXTS, $v->{pkg};
		1237	$progress = 1;
		1238	}
		1239
		1240	skip:
		1241	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1242	unless $progress;
		1243	}
		1244	};
		1245	}
		1246
		1247	#############################################################################
		1248
		1249	=back
		1250
		1251	=head2 CORE EXTENSIONS
		1252
		1253	Functions and methods that extend core crossfire objects.
		1254
		1255	=cut
		1256
		1257	package cf::player;
		1258
		1259	use Coro::AIO;
		1260
		1261	=head3 cf::player
		1262
		1263	=over 4
		1264
		1265	=item cf::player::find $login
		1266
		1267	Returns the given player object, loading it if necessary (might block).
		1268
		1269	=cut
		1270
		1271	sub playerdir($) {
		1272	"$PLAYERDIR/"
		1273	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1274	}
		1275
		1276	sub path($) {
		1277	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1278
		1279	(playerdir $login) . "/playerdata"
		1280	}
		1281
		1282	sub find_active($) {
		1283	$cf::PLAYER{$_[0]}
		1284	and $cf::PLAYER{$_[0]}->active
		1285	and $cf::PLAYER{$_[0]}
		1286	}
		1287
		1288	sub exists($) {
		1289	my ($login) = @_;
		1290
		1291	$cf::PLAYER{$login}
		1292	or cf::sync_job { !aio_stat path $login }
		1293	}
		1294
		1295	sub find($) {
		1296	return $cf::PLAYER{$_[0]} || do {
		1297	my $login = $_[0];
		1298
		1299	my $guard = cf::lock_acquire "user_find:$login";
		1300
		1301	$cf::PLAYER{$_[0]} || do {
		1302	# rename old playerfiles to new ones
		1303	#TODO: remove when no longer required
		1304	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1305	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1306	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1307	aio_unlink +(playerdir $login) . "/$login.pl";
		1308
		1309	my $pl = load_pl path $login
		1310	or return;
		1311	$cf::PLAYER{$login} = $pl
		1312	}
		1313	}
		1314	}
		1315
		1316	sub save($) {
		1317	my ($pl) = @_;
		1318
		1319	return if $pl->{deny_save};
		1320
		1321	my $path = path $pl;
		1322	my $guard = cf::lock_acquire "user_save:$path";
		1323
		1324	return if $pl->{deny_save};
		1325
		1326	aio_mkdir playerdir $pl, 0770;
		1327	$pl->{last_save} = $cf::RUNTIME;
		1328
		1329	$pl->save_pl ($path);
		1330	cf::cede_to_tick;
		1331	}
		1332
		1333	sub new($) {
		1334	my ($login) = @_;
		1335
		1336	my $self = create;
		1337
		1338	$self->ob->name ($login);
		1339	$self->{deny_save} = 1;
		1340
		1341	$cf::PLAYER{$login} = $self;
		1342
		1343	$self
		1344	}
		1345
		1346	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1347
		1348	=cut
		1349
		1350	sub send_msg {
		1351	my $ns = shift->ns
		1352	or return;
		1353	$ns->send_msg (@_);
		1354	}
		1355
		1356	=item $pl->quit_character
		1357
		1358	Nukes the player without looking back. If logged in, the connection will
		1359	be destroyed. May block for a long time.
		1360
		1361	=cut
		1362
		1363	sub quit_character {
		1364	my ($pl) = @_;
		1365
		1366	my $name = $pl->ob->name;
		1367
		1368	$pl->{deny_save} = 1;
		1369	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1370
		1371	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1372	$pl->deactivate;
		1373	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1374	$pl->ns->destroy if $pl->ns;
		1375
		1376	my $path = playerdir $pl;
		1377	my $temp = "$path~$cf::RUNTIME~deleting~";
		1378	aio_rename $path, $temp;
		1379	delete $cf::PLAYER{$pl->ob->name};
		1380	$pl->destroy;
		1381
		1382	my $prefix = qr<^~\Q$name\E/>;
		1383
		1384	# nuke player maps
		1385	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1386
		1387	IO::AIO::aio_rmtree $temp;
		1388	}
		1389
		1390	=item $pl->kick
		1391
		1392	Kicks a player out of the game. This destroys the connection.
		1393
		1394	=cut
		1395
		1396	sub kick {
		1397	my ($pl, $kicker) = @_;
		1398
		1399	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1400	$pl->killer ("kicked");
		1401	$pl->ns->destroy;
		1402	}
		1403
		1404	=item cf::player::list_logins
		1405
		1406	Returns am arrayref of all valid playernames in the system, can take a
		1407	while and may block, so not sync_job-capable, ever.
		1408
		1409	=cut
		1410
		1411	sub list_logins {
		1412	my $dirs = aio_readdir $PLAYERDIR
		1413	or return [];
		1414
		1415	my @logins;
		1416
		1417	for my $login (@$dirs) {
		1418	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1419	aio_read $fh, 0, 512, my $buf, 0 or next;
		1420	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1421
		1422	utf8::decode $login;
		1423	push @logins, $login;
		1424	}
		1425
		1426	\@logins
		1427	}
		1428
		1429	=item $player->maps
		1430
		1431	Returns an arrayref of map paths that are private for this
		1432	player. May block.
		1433
		1434	=cut
		1435
		1436	sub maps($) {
		1437	my ($pl) = @_;
		1438
		1439	$pl = ref $pl ? $pl->ob->name : $pl;
		1440
		1441	my $files = aio_readdir playerdir $pl
		1442	or return;
		1443
		1444	my @paths;
		1445
		1446	for (@$files) {
		1447	utf8::decode $_;
		1448	next if /\.(?:pl|pst)$/;
		1449	next unless /^$PATH_SEP/o;
		1450
		1451	push @paths, cf::map::normalise "~$pl/$_";
		1452	}
		1453
		1454	\@paths
		1455	}
		1456
		1457	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1458
		1459	Expand crossfire pod fragments into protocol xml.
		1460
		1461	=cut
		1462
		1463	sub expand_cfpod {
		1464	((my $self), (local $_)) = @_;
		1465
		1466	# escape & and <
		1467	s/&/&amp;/g;
		1468	s/(?<![BIUGH])</&lt;/g;
		1469
		1470	# this is buggy, it needs to properly take care of nested <'s
		1471
		1472	1 while
		1473	# replace B<>, I<>, U<> etc.
		1474	s/B<([^\>]*)>/<b>$1<\/b>/
		1475	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1476	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1477	# replace G<male|female> tags
		1478	|| s{G<([^>|]*)\|([^>]*)>}{
		1479	$self->gender ? $2 : $1
		1480	}ge
		1481	# replace H<hint text>
		1482	|| s{H<([^\>]*)>}
		1483	{
		1484	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1485	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1486	"")
		1487	[$self->{hintmode}]
		1488	}ge;
		1489
		1490	# create single paragraphs (very hackish)
		1491	s/(?<=\S)\n(?=\w)/ /g;
		1492
		1493	# compress some whitespace
		1494	s/\s+\n/\n/g; # ws line-ends
		1495	s/\n\n+/\n/g; # double lines
		1496	s/^\n+//; # beginning lines
		1497	s/\n+$//; # ending lines
		1498
		1499	$_
		1500	}
		1501
		1502	sub hintmode {
		1503	$_[0]{hintmode} = $_[1] if @_ > 1;
		1504	$_[0]{hintmode}
		1505	}
		1506
		1507	=item $player->ext_reply ($msgid, @msg)
		1508
		1509	Sends an ext reply to the player.
		1510
		1511	=cut
		1512
		1513	sub ext_reply($$@) {
		1514	my ($self, $id, @msg) = @_;
		1515
		1516	$self->ns->ext_reply ($id, @msg)
		1517	}
		1518
		1519	=item $player->ext_msg ($type, @msg)
		1520
		1521	Sends an ext event to the client.
		1522
		1523	=cut
		1524
		1525	sub ext_msg($$@) {
		1526	my ($self, $type, @msg) = @_;
		1527
		1528	$self->ns->ext_msg ($type, @msg);
		1529	}
		1530
		1531	=head3 cf::region
		1532
		1533	=over 4
		1534
		1535	=cut
		1536
		1537	package cf::region;
		1538
		1539	=item cf::region::find_by_path $path
		1540
		1541	Tries to decuce the likely region for a map knowing only its path.
		1542
		1543	=cut
		1544
		1545	sub find_by_path($) {
		1546	my ($path) = @_;
		1547
		1548	my ($match, $specificity);
		1549
		1550	for my $region (list) {
		1551	if ($region->{match} && $path =~ $region->{match}) {
		1552	($match, $specificity) = ($region, $region->specificity)
		1553	if $region->specificity > $specificity;
		1554	}
		1555	}
		1556
		1557	$match
		1558	}
		1559
		1560	=back
		1561
		1562	=head3 cf::map
		1563
		1564	=over 4
		1565
		1566	=cut
		1567
		1568	package cf::map;
		1569
		1570	use Fcntl;
		1571	use Coro::AIO;
		1572
		1573	use overload
		1574	'""' => \&as_string,
		1575	fallback => 1;
		1576
		1577	our $MAX_RESET = 3600;
		1578	our $DEFAULT_RESET = 3000;
		1579
		1580	sub generate_random_map {
		1581	my ($self, $rmp) = @_;
		1582	# mit "rum" bekleckern, nicht
		1583	$self->_create_random_map (
		1584	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1585	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1586	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1587	$rmp->{exit_on_final_map},
		1588	$rmp->{xsize}, $rmp->{ysize},
		1589	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1590	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1591	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1592	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1593	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1594	(cf::region::find $rmp->{region}), $rmp->{custom}
		1595	)
		1596	}
		1597
		1598	=item cf::map->register ($regex, $prio)
		1599
		1600	Register a handler for the map path matching the given regex at the
		1601	givne priority (higher is better, built-in handlers have priority 0, the
		1602	default).
		1603
		1604	=cut
645		1605
646	sub register {	1606	sub register {
		1607	my (undef, $regex, $prio) = @_;
		1608	my $pkg = caller;
		1609
		1610	no strict;
		1611	push @{"$pkg\::ISA"}, __PACKAGE__;
		1612
		1613	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1614	}
		1615
		1616	# also paths starting with '/'
		1617	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1618
		1619	sub thawer_merge {
647	my ($base, $pkg) = @_;	1620	my ($self, $merge) = @_;
648		1621
649	#TODO	1622	# we have to keep some variables in memory intact
650	}	1623	local $self->{path};
		1624	local $self->{load_path};
651		1625
652	sub load_extension {	1626	$self->SUPER::thawer_merge ($merge);
		1627	}
		1628
		1629	sub normalise {
653	my ($path) = @_;	1630	my ($path, $base) = @_;
654		1631
655	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1632	$path = "$path"; # make sure its a string
656	my $base = $1;
657	my $pkg = $1;
658	$pkg =~ s/[^[:word:]]/_/g;
659	$pkg = "ext::$pkg";
660		1633
661	warn "loading '$path' into '$pkg'\n";	1634	$path =~ s/\.map$//;
662		1635
663	open my $fh, "<:utf8", $path	1636	# map plan:
664	or die "$path: $!";	1637	#
		1638	# /! non-realised random map exit (special hack!)
		1639	# {... are special paths that are not being touched
		1640	# ?xxx/... are special absolute paths
		1641	# ?random/... random maps
		1642	# /... normal maps
		1643	# ~user/... per-player map of a specific user
665		1644
666	my $source =	1645	$path =~ s/$PATH_SEP/\//go;
667	"package $pkg; use strict; use utf8;\n"
668	. "#line 1 \"$path\"\n{\n"
669	. (do { local $/; <$fh> })
670	. "\n};\n1";
671		1646
672	eval $source	1647	# treat it as relative path if it starts with
673	or die $@ ? "$path: $@\n"	1648	# something that looks reasonable
674	: "extension disabled.\n";	1649	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1650	$base or Carp::carp "normalise called with relative path and no base: '$path'";
675		1651
676	push @exts, $pkg;	1652	$base =~ s{[^/]+/?$}{};
677	$ext_pkg{$base} = $pkg;	1653	$path = "$base/$path";
678
679	# no strict 'refs';
680	# @{"$pkg\::ISA"} = ext::;
681
682	register $base, $pkg;
683	}
684
685	sub unload_extension {
686	my ($pkg) = @_;
687
688	warn "removing extension $pkg\n";
689
690	# remove hooks
691	#TODO
692	# for my $idx (0 .. $#PLUGIN_EVENT) {
693	# delete $hook[$idx]{$pkg};
694	# }	1654	}
695		1655
696	# remove commands	1656	for ($path) {
697	for my $name (keys %COMMAND) {	1657	redo if s{//}{/};
698	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1658	redo if s{/\.?/}{/};
		1659	redo if s{/[^/]+/\.\./}{/};
		1660	}
699		1661
700	if (@cb) {	1662	$path
701	$COMMAND{$name} = \@cb;	1663	}
		1664
		1665	sub new_from_path {
		1666	my (undef, $path, $base) = @_;
		1667
		1668	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1669
		1670	$path = normalise $path, $base;
		1671
		1672	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1673	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1674	my $self = bless cf::map::new, $pkg;
		1675	$self->{path} = $path; $self->path ($path);
		1676	$self->init; # pass $1 etc.
		1677	return $self;
		1678	}
		1679	}
		1680
		1681	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1682	()
		1683	}
		1684
		1685	sub init {
		1686	my ($self) = @_;
		1687
		1688	$self
		1689	}
		1690
		1691	sub as_string {
		1692	my ($self) = @_;
		1693
		1694	"$self->{path}"
		1695	}
		1696
		1697	# the displayed name, this is a one way mapping
		1698	sub visible_name {
		1699	&as_string
		1700	}
		1701
		1702	# the original (read-only) location
		1703	sub load_path {
		1704	my ($self) = @_;
		1705
		1706	"$MAPDIR/$self->{path}.map"
		1707	}
		1708
		1709	# the temporary/swap location
		1710	sub save_path {
		1711	my ($self) = @_;
		1712
		1713	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1714	"$TMPDIR/$path.map"
		1715	}
		1716
		1717	# the unique path, undef == no special unique path
		1718	sub uniq_path {
		1719	my ($self) = @_;
		1720
		1721	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1722	"$UNIQUEDIR/$path"
		1723	}
		1724
		1725	# and all this just because we cannot iterate over
		1726	# all maps in C++...
		1727	sub change_all_map_light {
		1728	my ($change) = @_;
		1729
		1730	$_->change_map_light ($change)
		1731	for grep $_->outdoor, values %cf::MAP;
		1732	}
		1733
		1734	sub decay_objects {
		1735	my ($self) = @_;
		1736
		1737	return if $self->{deny_reset};
		1738
		1739	$self->do_decay_objects;
		1740	}
		1741
		1742	sub unlink_save {
		1743	my ($self) = @_;
		1744
		1745	utf8::encode (my $save = $self->save_path);
		1746	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1747	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1748	}
		1749
		1750	sub load_header_from($) {
		1751	my ($self, $path) = @_;
		1752
		1753	utf8::encode $path;
		1754	#aio_open $path, O_RDONLY, 0
		1755	# or return;
		1756
		1757	$self->_load_header ($path)
		1758	or return;
		1759
		1760	$self->{load_path} = $path;
		1761
		1762	1
		1763	}
		1764
		1765	sub load_header_orig {
		1766	my ($self) = @_;
		1767
		1768	$self->load_header_from ($self->load_path)
		1769	}
		1770
		1771	sub load_header_temp {
		1772	my ($self) = @_;
		1773
		1774	$self->load_header_from ($self->save_path)
		1775	}
		1776
		1777	sub prepare_temp {
		1778	my ($self) = @_;
		1779
		1780	$self->last_access ((delete $self->{last_access})
		1781	|| $cf::RUNTIME); #d#
		1782	# safety
		1783	$self->{instantiate_time} = $cf::RUNTIME
		1784	if $self->{instantiate_time} > $cf::RUNTIME;
		1785	}
		1786
		1787	sub prepare_orig {
		1788	my ($self) = @_;
		1789
		1790	$self->{load_original} = 1;
		1791	$self->{instantiate_time} = $cf::RUNTIME;
		1792	$self->last_access ($cf::RUNTIME);
		1793	$self->instantiate;
		1794	}
		1795
		1796	sub load_header {
		1797	my ($self) = @_;
		1798
		1799	if ($self->load_header_temp) {
		1800	$self->prepare_temp;
702	} else {	1801	} else {
703	delete $COMMAND{$name};	1802	$self->load_header_orig
704	}	1803	or return;
		1804	$self->prepare_orig;
		1805	}
		1806
		1807	$self->{deny_reset} = 1
		1808	if $self->no_reset;
		1809
		1810	$self->default_region (cf::region::find_by_path $self->{path})
		1811	unless $self->default_region;
		1812
705	}	1813	1
		1814	}
706		1815
707	# remove extcmds	1816	sub find;
708	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1817	sub find {
709	delete $EXTCMD{$name};	1818	my ($path, $origin) = @_;
		1819
		1820	$path = normalise $path, $origin && $origin->path;
		1821
		1822	cf::lock_wait "map_find:$path";
		1823
		1824	$cf::MAP{$path} || do {
		1825	my $guard = cf::lock_acquire "map_find:$path";
		1826	my $map = new_from_path cf::map $path
		1827	or return;
		1828
		1829	$map->{last_save} = $cf::RUNTIME;
		1830
		1831	$map->load_header
		1832	or return;
		1833
		1834	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1835	# doing this can freeze the server in a sync job, obviously
		1836	#$cf::WAIT_FOR_TICK->wait;
		1837	$map->reset;
		1838	undef $guard;
		1839	return find $path;
		1840	}
		1841
		1842	$cf::MAP{$path} = $map
		1843	}
		1844	}
		1845
		1846	sub pre_load { }
		1847	sub post_load { }
		1848
		1849	sub load {
		1850	my ($self) = @_;
		1851
		1852	local $self->{deny_reset} = 1; # loading can take a long time
		1853
		1854	my $path = $self->{path};
		1855
710	}	1856	{
		1857	my $guard1 = cf::lock_acquire "map_data:$path";
		1858	my $guard2 = cf::lock_acquire "map_load:$path";
711		1859
712	if (my $cb = $pkg->can ("unload")) {	1860	return if $self->in_memory != cf::MAP_SWAPPED;
713	eval {	1861
714	$cb->($pkg);	1862	$self->in_memory (cf::MAP_LOADING);
		1863
		1864	$self->alloc;
		1865
		1866	$self->pre_load;
		1867	cf::cede_to_tick;
		1868
		1869	$self->_load_objects ($self->{load_path}, 1)
		1870	or return;
		1871
		1872	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1873	if delete $self->{load_original};
		1874
		1875	if (my $uniq = $self->uniq_path) {
		1876	utf8::encode $uniq;
		1877	if (aio_open $uniq, O_RDONLY, 0) {
		1878	$self->clear_unique_items;
		1879	$self->_load_objects ($uniq, 0);
715	1	1880	}
716	} or warn "$pkg unloaded, but with errors: $@";	1881	}
717	}
718		1882
719	Symbol::delete_package $pkg;	1883	cf::cede_to_tick;
720	}	1884	# now do the right thing for maps
		1885	$self->link_multipart_objects;
		1886	$self->difficulty ($self->estimate_difficulty)
		1887	unless $self->difficulty;
		1888	cf::cede_to_tick;
721		1889
722	sub load_extensions {	1890	unless ($self->{deny_activate}) {
723	my $LIBDIR = maps_directory "perl";	1891	$self->decay_objects;
		1892	$self->fix_auto_apply;
		1893	$self->update_buttons;
		1894	cf::cede_to_tick;
		1895	$self->set_darkness_map;
		1896	cf::cede_to_tick;
		1897	$self->activate;
		1898	}
724		1899
725	for my $ext (<$LIBDIR/*.ext>) {	1900	$self->{last_save} = $cf::RUNTIME;
726	next unless -r $ext;	1901	$self->last_access ($cf::RUNTIME);
727	eval {
728	load_extension $ext;
729	1
730	} or warn "$ext not loaded: $@";
731	}
732	}
733		1902
734	#############################################################################	1903	$self->in_memory (cf::MAP_IN_MEMORY);
735	# load/save/clean perl data associated with a map	1904	}
736		1905
737	*cf::mapsupport::on_clean = sub {	1906	$self->post_load;
		1907	}
		1908
		1909	sub customise_for {
		1910	my ($self, $ob) = @_;
		1911
		1912	return find "~" . $ob->name . "/" . $self->{path}
		1913	if $self->per_player;
		1914
		1915	# return find "?party/" . $ob->name . "/" . $self->{path}
		1916	# if $self->per_party;
		1917
		1918	$self
		1919	}
		1920
		1921	# find and load all maps in the 3x3 area around a map
		1922	sub load_neighbours {
738	my ($map) = @_;	1923	my ($map) = @_;
739		1924
740	my $path = $map->tmpname;	1925	my @neigh; # diagonal neighbours
741	defined $path or return;
742		1926
743	unlink "$path.pst";	1927	for (0 .. 3) {
744	};	1928	my $neigh = $map->tile_path ($_)
		1929	or next;
		1930	$neigh = find $neigh, $map
		1931	or next;
		1932	$neigh->load;
745		1933
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	1934	push @neigh,
		1935	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		1936	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1937	}
747		1938
748	#############################################################################	1939	for (grep defined $_->[0], @neigh) {
749	# load/save perl data associated with player->ob objects	1940	my ($path, $origin) = @$_;
750		1941	my $neigh = find $path, $origin
751	sub all_objects(@) {	1942	or next;
752	@_, map all_objects ($_->inv), @_	1943	$neigh->load;
		1944	}
753	}	1945	}
754		1946
755	# TODO: compatibility cruft, remove when no longer needed	1947	sub find_sync {
756	attach_to_players	1948	my ($path, $origin) = @_;
757	on_load => sub {
758	my ($pl, $path) = @_;
759		1949
760	for my $o (all_objects $pl->ob) {	1950	cf::sync_job { find $path, $origin }
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1951	}
762	$o->set_ob_key_value ("_perl_data");
763		1952
764	%$o = %{ Storable::thaw pack "H*", $value };	1953	sub do_load_sync {
		1954	my ($map) = @_;
		1955
		1956	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		1957	if $Coro::current == $Coro::main;
		1958
		1959	cf::sync_job { $map->load };
		1960	}
		1961
		1962	our %MAP_PREFETCH;
		1963	our $MAP_PREFETCHER = undef;
		1964
		1965	sub find_async {
		1966	my ($path, $origin, $load) = @_;
		1967
		1968	$path = normalise $path, $origin && $origin->{path};
		1969
		1970	if (my $map = $cf::MAP{$path}) {
		1971	return $map if !$load || $map->in_memory == cf::MAP_IN_MEMORY;
		1972	}
		1973
		1974	$MAP_PREFETCH{$path} |= $load;
		1975
		1976	$MAP_PREFETCHER ||= cf::async {
		1977	while (%MAP_PREFETCH) {
		1978	while (my ($k, $v) = each %MAP_PREFETCH) {
		1979	if (my $map = find $k) {
		1980	$map->load if $v;
		1981	}
		1982
		1983	delete $MAP_PREFETCH{$k};
765	}	1984	}
766	}	1985	}
		1986	undef $MAP_PREFETCHER;
		1987	};
		1988	$MAP_PREFETCHER->prio (6);
		1989
		1990	()
		1991	}
		1992
		1993	sub save {
		1994	my ($self) = @_;
		1995
		1996	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1997
		1998	$self->{last_save} = $cf::RUNTIME;
		1999
		2000	return unless $self->dirty;
		2001
		2002	my $save = $self->save_path; utf8::encode $save;
		2003	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2004
		2005	$self->{load_path} = $save;
		2006
		2007	return if $self->{deny_save};
		2008
		2009	local $self->{last_access} = $self->last_access;#d#
		2010
		2011	cf::async {
		2012	$_->contr->save for $self->players;
		2013	};
		2014
		2015	if ($uniq) {
		2016	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2017	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2018	} else {
		2019	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
767	},	2020	}
768	;	2021	}
769		2022
770	#############################################################################	2023	sub swap_out {
		2024	my ($self) = @_;
771		2025
772	=head2 CORE EXTENSIONS	2026	# save first because save cedes
		2027	$self->save;
773		2028
774	Functions and methods that extend core crossfire objects.	2029	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2030
		2031	return if $self->players;
		2032	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2033	return if $self->{deny_save};
		2034
		2035	$self->clear;
		2036	$self->in_memory (cf::MAP_SWAPPED);
		2037	}
		2038
		2039	sub reset_at {
		2040	my ($self) = @_;
		2041
		2042	# TODO: safety, remove and allow resettable per-player maps
		2043	return 1e99 if $self->{deny_reset};
		2044
		2045	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2046	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2047
		2048	$time + $to
		2049	}
		2050
		2051	sub should_reset {
		2052	my ($self) = @_;
		2053
		2054	$self->reset_at <= $cf::RUNTIME
		2055	}
		2056
		2057	sub reset {
		2058	my ($self) = @_;
		2059
		2060	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2061
		2062	return if $self->players;
		2063
		2064	warn "resetting map ", $self->path;
		2065
		2066	$self->in_memory (cf::MAP_SWAPPED);
		2067
		2068	# need to save uniques path
		2069	unless ($self->{deny_save}) {
		2070	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2071
		2072	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2073	if $uniq;
		2074	}
		2075
		2076	delete $cf::MAP{$self->path};
		2077
		2078	$self->clear;
		2079
		2080	$_->clear_links_to ($self) for values %cf::MAP;
		2081
		2082	$self->unlink_save;
		2083	$self->destroy;
		2084	}
		2085
		2086	my $nuke_counter = "aaaa";
		2087
		2088	sub nuke {
		2089	my ($self) = @_;
		2090
		2091	delete $cf::MAP{$self->path};
		2092
		2093	$self->unlink_save;
		2094
		2095	bless $self, "cf::map";
		2096	delete $self->{deny_reset};
		2097	$self->{deny_save} = 1;
		2098	$self->reset_timeout (1);
		2099	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2100
		2101	$cf::MAP{$self->path} = $self;
		2102
		2103	$self->reset; # polite request, might not happen
		2104	}
		2105
		2106	=item $maps = cf::map::tmp_maps
		2107
		2108	Returns an arrayref with all map paths of currently instantiated and saved
		2109	maps. May block.
		2110
		2111	=cut
		2112
		2113	sub tmp_maps() {
		2114	[
		2115	map {
		2116	utf8::decode $_;
		2117	/\.map$/
		2118	? normalise $_
		2119	: ()
		2120	} @{ aio_readdir $TMPDIR or [] }
		2121	]
		2122	}
		2123
		2124	=item $maps = cf::map::random_maps
		2125
		2126	Returns an arrayref with all map paths of currently instantiated and saved
		2127	random maps. May block.
		2128
		2129	=cut
		2130
		2131	sub random_maps() {
		2132	[
		2133	map {
		2134	utf8::decode $_;
		2135	/\.map$/
		2136	? normalise "?random/$_"
		2137	: ()
		2138	} @{ aio_readdir $RANDOMDIR or [] }
		2139	]
		2140	}
		2141
		2142	=item cf::map::unique_maps
		2143
		2144	Returns an arrayref of paths of all shared maps that have
		2145	instantiated unique items. May block.
		2146
		2147	=cut
		2148
		2149	sub unique_maps() {
		2150	[
		2151	map {
		2152	utf8::decode $_;
		2153	/\.map$/
		2154	? normalise $_
		2155	: ()
		2156	} @{ aio_readdir $UNIQUEDIR or [] }
		2157	]
		2158	}
		2159
		2160	package cf;
		2161
		2162	=back
		2163
		2164	=head3 cf::object
		2165
		2166	=cut
		2167
		2168	package cf::object;
775		2169
776	=over 4	2170	=over 4
777		2171
778	=item cf::player::exists $login	2172	=item $ob->inv_recursive
779		2173
780	Returns true when the given account exists.	2174	Returns the inventory of the object _and_ their inventories, recursively.
781		2175
782	=cut	2176	=cut
783		2177
784	sub cf::player::exists($) {	2178	sub inv_recursive_;
785	cf::player::find $_[0]	2179	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2180	map { $_, inv_recursive_ $_->inv } @_
787	}	2181	}
		2182
		2183	sub inv_recursive {
		2184	inv_recursive_ inv $_[0]
		2185	}
		2186
		2187	package cf;
		2188
		2189	=back
		2190
		2191	=head3 cf::object::player
		2192
		2193	=over 4
788		2194
789	=item $player_object->reply ($npc, $msg[, $flags])	2195	=item $player_object->reply ($npc, $msg[, $flags])
790		2196
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2197	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
792	can be C<undef>. Does the right thing when the player is currently in a	2198	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		2200
795	=cut	2201	=cut
796		2202
797	# rough implementation of a future "reply" method that works	2203	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	2204	# with dialog boxes.
		2205	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	2206	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	2207	my ($self, $npc, $msg, $flags) = @_;
801		2208
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2209	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		2210
804	if ($self->{record_replies}) {	2211	if ($self->{record_replies}) {
805	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2212	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2213
806	} else {	2214	} else {
		2215	my $pl = $self->contr;
		2216
		2217	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2218	my $dialog = $pl->{npc_dialog};
		2219	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2220
		2221	} else {
807	$msg = $npc->name . " says: $msg" if $npc;	2222	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	2223	$self->message ($msg, $flags);
		2224	}
809	}	2225	}
810	}	2226	}
811		2227
812	=item $player->ext_reply ($msgid, $msgtype, %msg)	2228	=item $object->send_msg ($channel, $msg, $color, [extra...])
813		2229
814	Sends an ext reply to the player.
815
816	=cut	2230	=cut
817		2231
818	sub cf::player::ext_reply($$$%) {	2232	sub cf::object::send_msg {
819	my ($self, $id, %msg) = @_;	2233	my $pl = shift->contr
820		2234	or return;
821	$msg{msgid} = $id;	2235	$pl->send_msg (@_);
822
823	$self->send ("ext " . to_json \%msg);
824	}	2236	}
825		2237
826	=item $player_object->may ("access")	2238	=item $player_object->may ("access")
827		2239
828	Returns wether the given player is authorized to access resource "access"	2240	Returns wether the given player is authorized to access resource "access"
…		…
837	(ref $cf::CFG{"may_$access"}	2249	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2250	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	2251	: $cf::CFG{"may_$access"})
840	}	2252	}
841		2253
842	=cut	2254	=item $player_object->enter_link
843		2255
844	#############################################################################	2256	Freezes the player and moves him/her to a special map (C<{link}>).
		2257
		2258	The player should be reasonably safe there for short amounts of time. You
		2259	I<MUST> call C<leave_link> as soon as possible, though.
		2260
		2261	Will never block.
		2262
		2263	=item $player_object->leave_link ($map, $x, $y)
		2264
		2265	Moves the player out of the special C<{link}> map onto the specified
		2266	map. If the map is not valid (or omitted), the player will be moved back
		2267	to the location he/she was before the call to C<enter_link>, or, if that
		2268	fails, to the emergency map position.
		2269
		2270	Might block.
		2271
		2272	=cut
		2273
		2274	sub link_map {
		2275	unless ($LINK_MAP) {
		2276	$LINK_MAP = cf::map::find "{link}"
		2277	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2278	$LINK_MAP->load;
		2279	}
		2280
		2281	$LINK_MAP
		2282	}
		2283
		2284	sub cf::object::player::enter_link {
		2285	my ($self) = @_;
		2286
		2287	$self->deactivate_recursive;
		2288
		2289	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2290
		2291	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2292	if $self->map && $self->map->{path} ne "{link}";
		2293
		2294	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2295	}
		2296
		2297	sub cf::object::player::leave_link {
		2298	my ($self, $map, $x, $y) = @_;
		2299
		2300	return unless $self->contr->active;
		2301
		2302	my $link_pos = delete $self->{_link_pos};
		2303
		2304	unless ($map) {
		2305	# restore original map position
		2306	($map, $x, $y) = @{ $link_pos || [] };
		2307	$map = cf::map::find $map;
		2308
		2309	unless ($map) {
		2310	($map, $x, $y) = @$EMERGENCY_POSITION;
		2311	$map = cf::map::find $map
		2312	or die "FATAL: cannot load emergency map\n";
		2313	}
		2314	}
		2315
		2316	($x, $y) = (-1, -1)
		2317	unless (defined $x) && (defined $y);
		2318
		2319	# use -1 or undef as default coordinates, not 0, 0
		2320	($x, $y) = ($map->enter_x, $map->enter_y)
		2321	if $x <=0 && $y <= 0;
		2322
		2323	$map->load;
		2324	$map->load_neighbours;
		2325
		2326	return unless $self->contr->active;
		2327	$self->activate_recursive;
		2328
		2329	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2330	$self->enter_map ($map, $x, $y);
		2331	}
		2332
		2333	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2334
		2335	Moves the player to the given map-path and coordinates by first freezing
		2336	her, loading and preparing them map, calling the provided $check callback
		2337	that has to return the map if sucecssful, and then unfreezes the player on
		2338	the new (success) or old (failed) map position. In either case, $done will
		2339	be called at the end of this process.
		2340
		2341	=cut
		2342
		2343	our $GOTOGEN;
		2344
		2345	sub cf::object::player::goto {
		2346	my ($self, $path, $x, $y, $check, $done) = @_;
		2347
		2348	# do generation counting so two concurrent goto's will be executed in-order
		2349	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2350
		2351	$self->enter_link;
		2352
		2353	(async {
		2354	my $map = eval {
		2355	my $map = cf::map::find $path;
		2356
		2357	if ($map) {
		2358	$map = $map->customise_for ($self);
		2359	$map = $check->($map) if $check && $map;
		2360	} else {
		2361	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2362	}
		2363
		2364	$map
		2365	};
		2366
		2367	if ($@) {
		2368	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2369	LOG llevError | logBacktrace, Carp::longmess $@;
		2370	}
		2371
		2372	if ($gen == $self->{_goto_generation}) {
		2373	delete $self->{_goto_generation};
		2374	$self->leave_link ($map, $x, $y);
		2375	}
		2376
		2377	$done->() if $done;
		2378	})->prio (1);
		2379	}
		2380
		2381	=item $player_object->enter_exit ($exit_object)
		2382
		2383	=cut
		2384
		2385	sub parse_random_map_params {
		2386	my ($spec) = @_;
		2387
		2388	my $rmp = { # defaults
		2389	xsize => (cf::rndm 15, 40),
		2390	ysize => (cf::rndm 15, 40),
		2391	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2392	#layout => string,
		2393	};
		2394
		2395	for (split /\n/, $spec) {
		2396	my ($k, $v) = split /\s+/, $_, 2;
		2397
		2398	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2399	}
		2400
		2401	$rmp
		2402	}
		2403
		2404	sub prepare_random_map {
		2405	my ($exit) = @_;
		2406
		2407	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2408
		2409	# all this does is basically replace the /! path by
		2410	# a new random map path (?random/...) with a seed
		2411	# that depends on the exit object
		2412
		2413	my $rmp = parse_random_map_params $exit->msg;
		2414
		2415	if ($exit->map) {
		2416	$rmp->{region} = $exit->region->name;
		2417	$rmp->{origin_map} = $exit->map->path;
		2418	$rmp->{origin_x} = $exit->x;
		2419	$rmp->{origin_y} = $exit->y;
		2420	}
		2421
		2422	$rmp->{random_seed} ||= $exit->random_seed;
		2423
		2424	my $data = cf::to_json $rmp;
		2425	my $md5 = Digest::MD5::md5_hex $data;
		2426	my $meta = "$RANDOMDIR/$md5.meta";
		2427
		2428	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2429	aio_write $fh, 0, (length $data), $data, 0;
		2430	undef $fh;
		2431	aio_rename "$meta~", $meta;
		2432
		2433	$exit->slaying ("?random/$md5");
		2434	$exit->msg (undef);
		2435	}
		2436	}
		2437
		2438	sub cf::object::player::enter_exit {
		2439	my ($self, $exit) = @_;
		2440
		2441	return unless $self->type == cf::PLAYER;
		2442
		2443	if ($exit->slaying eq "/!") {
		2444	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2445	# the problem is that $exit might not survive long enough
		2446	# so it needs to be done right now, right here
		2447	cf::sync_job { prepare_random_map $exit };
		2448	}
		2449
		2450	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2451	my $hp = $exit->stats->hp;
		2452	my $sp = $exit->stats->sp;
		2453
		2454	$self->enter_link;
		2455
		2456	# if exit is damned, update players death & WoR home-position
		2457	$self->contr->savebed ($slaying, $hp, $sp)
		2458	if $exit->flag (FLAG_DAMNED);
		2459
		2460	(async {
		2461	$self->deactivate_recursive; # just to be sure
		2462	unless (eval {
		2463	$self->goto ($slaying, $hp, $sp);
		2464
		2465	1;
		2466	}) {
		2467	$self->message ("Something went wrong deep within the crossfire server. "
		2468	. "I'll try to bring you back to the map you were before. "
		2469	. "Please report this to the dungeon master!",
		2470	cf::NDI_UNIQUE | cf::NDI_RED);
		2471
		2472	warn "ERROR in enter_exit: $@";
		2473	$self->leave_link;
		2474	}
		2475	})->prio (1);
		2476	}
		2477
		2478	=head3 cf::client
		2479
		2480	=over 4
		2481
		2482	=item $client->send_drawinfo ($text, $flags)
		2483
		2484	Sends a drawinfo packet to the client. Circumvents output buffering so
		2485	should not be used under normal circumstances.
		2486
		2487	=cut
		2488
		2489	sub cf::client::send_drawinfo {
		2490	my ($self, $text, $flags) = @_;
		2491
		2492	utf8::encode $text;
		2493	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2494	}
		2495
		2496	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2497
		2498	Send a drawinfo or msg packet to the client, formatting the msg for the
		2499	client if neccessary. C<$type> should be a string identifying the type of
		2500	the message, with C<log> being the default. If C<$color> is negative, suppress
		2501	the message unless the client supports the msg packet.
		2502
		2503	=cut
		2504
		2505	sub cf::client::send_msg {
		2506	my ($self, $channel, $msg, $color, @extra) = @_;
		2507
		2508	$msg = $self->pl->expand_cfpod ($msg);
		2509
		2510	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2511
		2512	if (ref $channel) {
		2513	# send meta info to client, if not yet sent
		2514	unless (exists $self->{channel}{$channel->{id}}) {
		2515	$self->{channel}{$channel->{id}} = $channel;
		2516	$self->ext_msg (channel_info => $channel);
		2517	}
		2518
		2519	$channel = $channel->{id};
		2520	}
		2521
		2522	return unless @extra || length $msg;
		2523
		2524	if ($self->can_msg) {
		2525	# default colour, mask it out
		2526	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2527	if $color & cf::NDI_DEF;
		2528
		2529	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2530	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2531	} else {
		2532	if ($color >= 0) {
		2533	# replace some tags by gcfclient-compatible ones
		2534	for ($msg) {
		2535	1 while
		2536	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2537	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2538	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2539	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2540	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2541	}
		2542
		2543	$color &= cf::NDI_COLOR_MASK;
		2544
		2545	utf8::encode $msg;
		2546
		2547	if (0 && $msg =~ /\[/) {
		2548	# COMMAND/INFO
		2549	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2550	} else {
		2551	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2552	$self->send_packet ("drawinfo $color $msg")
		2553	}
		2554	}
		2555	}
		2556	}
		2557
		2558	=item $client->ext_msg ($type, @msg)
		2559
		2560	Sends an ext event to the client.
		2561
		2562	=cut
		2563
		2564	sub cf::client::ext_msg($$@) {
		2565	my ($self, $type, @msg) = @_;
		2566
		2567	if ($self->extcmd == 2) {
		2568	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2569	} elsif ($self->extcmd == 1) { # TODO: remove
		2570	push @msg, msgtype => "event_$type";
		2571	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2572	}
		2573	}
		2574
		2575	=item $client->ext_reply ($msgid, @msg)
		2576
		2577	Sends an ext reply to the client.
		2578
		2579	=cut
		2580
		2581	sub cf::client::ext_reply($$@) {
		2582	my ($self, $id, @msg) = @_;
		2583
		2584	if ($self->extcmd == 2) {
		2585	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2586	} elsif ($self->extcmd == 1) {
		2587	#TODO: version 1, remove
		2588	unshift @msg, msgtype => "reply", msgid => $id;
		2589	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2590	}
		2591	}
		2592
		2593	=item $success = $client->query ($flags, "text", \&cb)
		2594
		2595	Queues a query to the client, calling the given callback with
		2596	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2597	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2598
		2599	Queries can fail, so check the return code. Or don't, as queries will
		2600	become reliable at some point in the future.
		2601
		2602	=cut
		2603
		2604	sub cf::client::query {
		2605	my ($self, $flags, $text, $cb) = @_;
		2606
		2607	return unless $self->state == ST_PLAYING
		2608	|| $self->state == ST_SETUP
		2609	|| $self->state == ST_CUSTOM;
		2610
		2611	$self->state (ST_CUSTOM);
		2612
		2613	utf8::encode $text;
		2614	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2615
		2616	$self->send_packet ($self->{query_queue}[0][0])
		2617	if @{ $self->{query_queue} } == 1;
		2618
		2619	1
		2620	}
		2621
		2622	cf::client->attach (
		2623	on_connect => sub {
		2624	my ($ns) = @_;
		2625
		2626	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2627	},
		2628	on_reply => sub {
		2629	my ($ns, $msg) = @_;
		2630
		2631	# this weird shuffling is so that direct followup queries
		2632	# get handled first
		2633	my $queue = delete $ns->{query_queue}
		2634	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2635
		2636	(shift @$queue)->[1]->($msg);
		2637	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2638
		2639	push @{ $ns->{query_queue} }, @$queue;
		2640
		2641	if (@{ $ns->{query_queue} } == @$queue) {
		2642	if (@$queue) {
		2643	$ns->send_packet ($ns->{query_queue}[0][0]);
		2644	} else {
		2645	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2646	}
		2647	}
		2648	},
		2649	on_exticmd => sub {
		2650	my ($ns, $buf) = @_;
		2651
		2652	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2653
		2654	if (ref $msg) {
		2655	my ($type, $reply, @payload) =
		2656	"ARRAY" eq ref $msg
		2657	? @$msg
		2658	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2659
		2660	my @reply;
		2661
		2662	if (my $cb = $EXTICMD{$type}) {
		2663	@reply = $cb->($ns, @payload);
		2664	}
		2665
		2666	$ns->ext_reply ($reply, @reply)
		2667	if $reply;
		2668
		2669	} else {
		2670	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2671	}
		2672
		2673	cf::override;
		2674	},
		2675	);
		2676
		2677	=item $client->async (\&cb)
		2678
		2679	Create a new coroutine, running the specified callback. The coroutine will
		2680	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2681	or loss of connection).
		2682
		2683	=cut
		2684
		2685	sub cf::client::async {
		2686	my ($self, $cb) = @_;
		2687
		2688	my $coro = &Coro::async ($cb);
		2689
		2690	$coro->on_destroy (sub {
		2691	delete $self->{_coro}{$coro+0};
		2692	});
		2693
		2694	$self->{_coro}{$coro+0} = $coro;
		2695
		2696	$coro
		2697	}
		2698
		2699	cf::client->attach (
		2700	on_destroy => sub {
		2701	my ($ns) = @_;
		2702
		2703	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2704	},
		2705	);
		2706
		2707	=back
		2708
845		2709
846	=head2 SAFE SCRIPTING	2710	=head2 SAFE SCRIPTING
847		2711
848	Functions that provide a safe environment to compile and execute	2712	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	2713	snippets of perl code without them endangering the safety of the server
…		…
856	our $safe = new Safe "safe";	2720	our $safe = new Safe "safe";
857	our $safe_hole = new Safe::Hole;	2721	our $safe_hole = new Safe::Hole;
858		2722
859	$SIG{FPE} = 'IGNORE';	2723	$SIG{FPE} = 'IGNORE';
860		2724
861	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2725	$safe->permit_only (Opcode::opset qw(
		2726	:base_core :base_mem :base_orig :base_math
		2727	grepstart grepwhile mapstart mapwhile
		2728	sort time
		2729	));
862		2730
863	# here we export the classes and methods available to script code	2731	# here we export the classes and methods available to script code
864		2732
865	=pod	2733	=pod
866		2734
867	The following fucntions and emthods are available within a safe environment:	2735	The following functions and methods are available within a safe environment:
868		2736
869	cf::object contr pay_amount pay_player	2737	cf::object
		2738	contr pay_amount pay_player map x y force_find force_add
		2739	insert remove name archname title slaying race decrease_ob_nr
		2740
870	cf::object::player player	2741	cf::object::player
871	cf::player peaceful	2742	player
		2743
		2744	cf::player
		2745	peaceful
		2746
		2747	cf::map
		2748	trigger
872		2749
873	=cut	2750	=cut
874		2751
875	for (	2752	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	2753	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2754	insert remove inv name archname title slaying race
		2755	decrease_ob_nr)],
877	["cf::object::player" => qw(player)],	2756	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	2757	["cf::player" => qw(peaceful)],
		2758	["cf::map" => qw(trigger)],
879	) {	2759	) {
880	no strict 'refs';	2760	no strict 'refs';
881	my ($pkg, @funs) = @$_;	2761	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2762	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	2763	for @funs;
…		…
951	=back	2831	=back
952		2832
953	=cut	2833	=cut
954		2834
955	#############################################################################	2835	#############################################################################
		2836	# the server's init and main functions
956		2837
957	=head2 EXTENSION DATABASE SUPPORT	2838	sub load_facedata($) {
		2839	my ($path) = @_;
958		2840
959	Crossfire maintains a very simple database for extension use. It can	2841	# HACK to clear player env face cache, we need some signal framework
960	currently store anything that can be serialised using Storable, which	2842	# for this (global event?)
961	excludes objects.	2843	%ext::player_env::MUSIC_FACE_CACHE = ();
962		2844
963	The parameter C<$family> should best start with the name of the extension	2845	my $enc = JSON::XS->new->utf8->canonical->relaxed;
964	using it, it should be unique.
965		2846
966	=over 4	2847	warn "loading facedata from $path\n";
967		2848
968	=item $hashref = cf::db_get $family	2849	my $facedata;
		2850	0 < aio_load $path, $facedata
		2851	or die "$path: $!";
969		2852
970	Return a hashref for use by the extension C<$family>, which can be	2853	$facedata = Coro::Storable::thaw $facedata;
971	modified. After modifications, you have to call C<cf::db_dirty> or
972	C<cf::db_sync>.
973		2854
974	=item $value = cf::db_get $family => $key	2855	$facedata->{version} == 2
		2856	or cf::cleanup "$path: version mismatch, cannot proceed.";
975		2857
976	Returns a single value from the database	2858	# patch in the exptable
977		2859	$facedata->{resource}{"res/exp_table"} = {
978	=item cf::db_put $family => $hashref	2860	type => FT_RSRC,
979		2861	data => $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]),
980	Stores the given family hashref into the database. Updates are delayed, if
981	you want the data to be synced to disk immediately, use C<cf::db_sync>.
982
983	=item cf::db_put $family => $key => $value
984
985	Stores the given C<$value> in the family hash. Updates are delayed, if you
986	want the data to be synced to disk immediately, use C<cf::db_sync>.
987
988	=item cf::db_dirty
989
990	Marks the database as dirty, to be updated at a later time.
991
992	=item cf::db_sync
993
994	Immediately write the database to disk I<if it is dirty>.
995
996	=cut
997
998	our $DB;
999
1000	{
1001	my $path = cf::localdir . "/database.pst";
1002
1003	sub db_load() {
1004	warn "loading database $path\n";#d# remove later
1005	$DB = stat $path ? Storable::retrieve $path : { };
1006	}
1007
1008	my $pid;
1009
1010	sub db_save() {
1011	warn "saving database $path\n";#d# remove later
1012	waitpid $pid, 0 if $pid;
1013	if (0 == ($pid = fork)) {
1014	$DB->{_meta}{version} = 1;
1015	Storable::nstore $DB, "$path~";
1016	rename "$path~", $path;
1017	cf::_exit 0 if defined $pid;
1018	}
1019	}
1020
1021	my $dirty;
1022
1023	sub db_sync() {
1024	db_save if $dirty;
1025	undef $dirty;
1026	}
1027
1028	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1029	db_sync;
1030	});	2862	};
		2863	cf::cede_to_tick;
1031		2864
1032	sub db_dirty() {
1033	$dirty = 1;
1034	$idle->start;
1035	}	2865	{
		2866	my $faces = $facedata->{faceinfo};
1036		2867
1037	sub db_get($;$) {	2868	while (my ($face, $info) = each %$faces) {
1038	@_ >= 2	2869	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1039	? $DB->{$_[0]}{$_[1]}	2870	cf::face::set_visibility $idx, $info->{visibility};
1040	: ($DB->{$_[0]} ||= { })	2871	cf::face::set_magicmap $idx, $info->{magicmap};
1041	}	2872	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
		2873	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1042		2874
1043	sub db_put($$;$) {	2875	cf::cede_to_tick;
1044	if (@_ >= 3) {
1045	$DB->{$_[0]}{$_[1]} = $_[2];
1046	} else {
1047	$DB->{$_[0]} = $_[1];
1048	}
1049	db_dirty;
1050	}
1051
1052	attach_global
1053	prio => 10000,
1054	on_cleanup => sub {
1055	db_sync;
1056	},	2876	}
		2877
		2878	while (my ($face, $info) = each %$faces) {
		2879	next unless $info->{smooth};
		2880	my $idx = cf::face::find $face
		2881	or next;
		2882	if (my $smooth = cf::face::find $info->{smooth}) {
		2883	cf::face::set_smooth $idx, $smooth;
		2884	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2885	} else {
		2886	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2887	}
		2888
		2889	cf::cede_to_tick;
		2890	}
1057	;	2891	}
1058	}
1059		2892
1060	#############################################################################	2893	{
1061	# the server's main()	2894	my $anims = $facedata->{animinfo};
1062		2895
1063	sub cfg_load {	2896	while (my ($anim, $info) = each %$anims) {
		2897	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2898	cf::cede_to_tick;
		2899	}
		2900
		2901	cf::anim::invalidate_all; # d'oh
		2902	}
		2903
		2904	{
		2905	# TODO: for gcfclient pleasure, we should give resources
		2906	# that gcfclient doesn't grok a >10000 face index.
		2907	my $res = $facedata->{resource};
		2908
		2909	my $soundconf = delete $res->{"res/sound.conf"};
		2910
		2911	while (my ($name, $info) = each %$res) {
		2912	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2913	my $data;
		2914
		2915	if ($info->{type} & 1) {
		2916	# prepend meta info
		2917
		2918	my $meta = $enc->encode ({
		2919	name => $name,
		2920	%{ $info->{meta} || {} },
		2921	});
		2922
		2923	$data = pack "(w/a*)*", $meta, $info->{data};
		2924	} else {
		2925	$data = $info->{data};
		2926	}
		2927
		2928	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		2929	cf::face::set_type $idx, $info->{type};
		2930
		2931	cf::cede_to_tick;
		2932	}
		2933
		2934	if ($soundconf) {
		2935	$soundconf = $enc->decode (delete $soundconf->{data});
		2936
		2937	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		2938	my $sound = $soundconf->{compat}[$_]
		2939	or next;
		2940
		2941	my $face = cf::face::find "sound/$sound->[1]";
		2942	cf::sound::set $sound->[0] => $face;
		2943	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		2944	}
		2945
		2946	while (my ($k, $v) = each %{$soundconf->{event}}) {
		2947	my $face = cf::face::find "sound/$v";
		2948	cf::sound::set $k => $face;
		2949	}
		2950	}
		2951	}
		2952
		2953	1
		2954	}
		2955
		2956	register_exticmd fx_want => sub {
		2957	my ($ns, $want) = @_;
		2958
		2959	while (my ($k, $v) = each %$want) {
		2960	$ns->fx_want ($k, $v);
		2961	}
		2962	};
		2963
		2964	sub reload_regions {
		2965	# HACK to clear player env face cache, we need some signal framework
		2966	# for this (global event?)
		2967	%ext::player_env::MUSIC_FACE_CACHE = ();
		2968
		2969	load_resource_file "$MAPDIR/regions"
		2970	or die "unable to load regions file\n";
		2971
		2972	for (cf::region::list) {
		2973	$_->{match} = qr/$_->{match}/
		2974	if exists $_->{match};
		2975	}
		2976	}
		2977
		2978	sub reload_facedata {
		2979	load_facedata "$DATADIR/facedata"
		2980	or die "unable to load facedata\n";
		2981	}
		2982
		2983	sub reload_archetypes {
		2984	load_resource_file "$DATADIR/archetypes"
		2985	or die "unable to load archetypes\n";
		2986	#d# NEED to laod twice to resolve forward references
		2987	# this really needs to be done in an extra post-pass
		2988	# (which needs to be synchronous, so solve it differently)
		2989	load_resource_file "$DATADIR/archetypes"
		2990	or die "unable to load archetypes\n";
		2991	}
		2992
		2993	sub reload_treasures {
		2994	load_resource_file "$DATADIR/treasures"
		2995	or die "unable to load treasurelists\n";
		2996	}
		2997
		2998	sub reload_resources {
		2999	warn "reloading resource files...\n";
		3000
		3001	reload_regions;
		3002	reload_facedata;
		3003	#reload_archetypes;#d#
		3004	reload_archetypes;
		3005	reload_treasures;
		3006
		3007	warn "finished reloading resource files\n";
		3008	}
		3009
		3010	sub init {
		3011	reload_resources;
		3012	}
		3013
		3014	sub reload_config {
1064	open my $fh, "<:utf8", cf::confdir . "/config"	3015	open my $fh, "<:utf8", "$CONFDIR/config"
1065	or return;	3016	or return;
1066		3017
1067	local $/;	3018	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	3019	*CFG = YAML::Syck::Load <$fh>;
		3020
		3021	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3022
		3023	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3024	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3025
		3026	if (exists $CFG{mlockall}) {
		3027	eval {
		3028	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3029	and die "WARNING: m(un)lockall failed: $!\n";
		3030	};
		3031	warn $@ if $@;
		3032	}
1069	}	3033	}
1070		3034
1071	sub main {	3035	sub main {
1072	cfg_load;	3036	# we must not ever block the main coroutine
1073	db_load;	3037	local $Coro::idle = sub {
		3038	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3039	(async {
		3040	Event::one_event;
		3041	})->prio (Coro::PRIO_MAX);
		3042	};
		3043
		3044	reload_config;
		3045	db_init;
1074	load_extensions;	3046	load_extensions;
		3047
		3048	$TICK_WATCHER->start;
1075	Event::loop;	3049	Event::loop;
1076	}	3050	}
1077		3051
1078	#############################################################################	3052	#############################################################################
1079	# initialisation	3053	# initialisation and cleanup
1080		3054
1081	sub _perl_reload(&) {	3055	# install some emergency cleanup handlers
		3056	BEGIN {
		3057	for my $signal (qw(INT HUP TERM)) {
		3058	Event->signal (
		3059	reentrant => 0,
		3060	data => WF_AUTOCANCEL,
		3061	signal => $signal,
		3062	prio => 0,
		3063	cb => sub {
		3064	cf::cleanup "SIG$signal";
		3065	},
		3066	);
		3067	}
		3068	}
		3069
		3070	sub write_runtime {
		3071	my $runtime = "$LOCALDIR/runtime";
		3072
		3073	# first touch the runtime file to show we are still running:
		3074	# the fsync below can take a very very long time.
		3075
		3076	IO::AIO::aio_utime $runtime, undef, undef;
		3077
		3078	my $guard = cf::lock_acquire "write_runtime";
		3079
		3080	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3081	or return;
		3082
		3083	my $value = $cf::RUNTIME + 90 + 10;
		3084	# 10 is the runtime save interval, for a monotonic clock
		3085	# 60 allows for the watchdog to kill the server.
		3086
		3087	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3088	and return;
		3089
		3090	# always fsync - this file is important
		3091	aio_fsync $fh
		3092	and return;
		3093
		3094	# touch it again to show we are up-to-date
		3095	aio_utime $fh, undef, undef;
		3096
		3097	close $fh
		3098	or return;
		3099
		3100	aio_rename "$runtime~", $runtime
		3101	and return;
		3102
		3103	warn "runtime file written.\n";
		3104
		3105	1
		3106	}
		3107
		3108	sub emergency_save() {
		3109	my $freeze_guard = cf::freeze_mainloop;
		3110
		3111	warn "enter emergency perl save\n";
		3112
		3113	cf::sync_job {
		3114	# use a peculiar iteration method to avoid tripping on perl
		3115	# refcount bugs in for. also avoids problems with players
		3116	# and maps saved/destroyed asynchronously.
		3117	warn "begin emergency player save\n";
		3118	for my $login (keys %cf::PLAYER) {
		3119	my $pl = $cf::PLAYER{$login} or next;
		3120	$pl->valid or next;
		3121	$pl->save;
		3122	}
		3123	warn "end emergency player save\n";
		3124
		3125	warn "begin emergency map save\n";
		3126	for my $path (keys %cf::MAP) {
		3127	my $map = $cf::MAP{$path} or next;
		3128	$map->valid or next;
		3129	$map->save;
		3130	}
		3131	warn "end emergency map save\n";
		3132
		3133	warn "begin emergency database checkpoint\n";
		3134	BDB::db_env_txn_checkpoint $DB_ENV;
		3135	warn "end emergency database checkpoint\n";
		3136	};
		3137
		3138	warn "leave emergency perl save\n";
		3139	}
		3140
		3141	sub post_cleanup {
1082	my ($msg) = @_;	3142	my ($make_core) = @_;
1083		3143
1084	$msg->("reloading...");	3144	warn Carp::longmess "post_cleanup backtrace"
		3145	if $make_core;
		3146	}
1085		3147
1086	eval {	3148	sub do_reload_perl() {
1087	# cancel all watchers	3149	# can/must only be called in main
		3150	if ($Coro::current != $Coro::main) {
		3151	warn "can only reload from main coroutine";
		3152	return;
		3153	}
		3154
		3155	warn "reloading...";
		3156
		3157	warn "entering sync_job";
		3158
		3159	cf::sync_job {
		3160	cf::write_runtime; # external watchdog should not bark
		3161	cf::emergency_save;
		3162	cf::write_runtime; # external watchdog should not bark
		3163
		3164	warn "syncing database to disk";
		3165	BDB::db_env_txn_checkpoint $DB_ENV;
		3166
		3167	# if anything goes wrong in here, we should simply crash as we already saved
		3168
		3169	warn "cancelling all WF_AUTOCANCEL watchers";
1088	$_->cancel for Event::all_watchers;	3170	for (Event::all_watchers) {
		3171	$_->cancel if $_->data & WF_AUTOCANCEL;
		3172	}
1089		3173
1090	# unload all extensions	3174	warn "flushing outstanding aio requests";
1091	for (@exts) {	3175	for (;;) {
1092	$msg->("unloading <$_>");	3176	BDB::flush;
1093	unload_extension $_;	3177	IO::AIO::flush;
		3178	Coro::cede;
		3179	last unless IO::AIO::nreqs || BDB::nreqs;
		3180	warn "iterate...";
		3181	}
		3182
		3183	++$RELOAD;
		3184
		3185	warn "cancelling all extension coros";
		3186	$_->cancel for values %EXT_CORO;
		3187	%EXT_CORO = ();
		3188
		3189	warn "removing commands";
		3190	%COMMAND = ();
		3191
		3192	warn "removing ext/exti commands";
		3193	%EXTCMD = ();
		3194	%EXTICMD = ();
		3195
		3196	warn "unloading/nuking all extensions";
		3197	for my $pkg (@EXTS) {
		3198	warn "... unloading $pkg";
		3199
		3200	if (my $cb = $pkg->can ("unload")) {
		3201	eval {
		3202	$cb->($pkg);
		3203	1
		3204	} or warn "$pkg unloaded, but with errors: $@";
1094	}	3205	}
1095		3206
		3207	warn "... nuking $pkg";
		3208	Symbol::delete_package $pkg;
		3209	}
		3210
1096	# unload all modules loaded from $LIBDIR	3211	warn "unloading all perl modules loaded from $LIBDIR";
1097	while (my ($k, $v) = each %INC) {	3212	while (my ($k, $v) = each %INC) {
1098	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3213	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1099		3214
1100	$msg->("removing <$k>");	3215	warn "... unloading $k";
1101	delete $INC{$k};	3216	delete $INC{$k};
1102		3217
1103	$k =~ s/\.pm$//;	3218	$k =~ s/\.pm$//;
1104	$k =~ s/\//::/g;	3219	$k =~ s/\//::/g;
1105		3220
…		…
1108	}	3223	}
1109		3224
1110	Symbol::delete_package $k;	3225	Symbol::delete_package $k;
1111	}	3226	}
1112		3227
1113	# sync database to disk
1114	cf::db_sync;
1115
1116	# get rid of safe::, as good as possible	3228	warn "getting rid of safe::, as good as possible";
1117	Symbol::delete_package "safe::$_"	3229	Symbol::delete_package "safe::$_"
1118	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3230	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1119		3231
1120	# remove register_script_function callbacks
1121	# TODO
1122
1123	# unload cf.pm "a bit"	3232	warn "unloading cf.pm \"a bit\"";
1124	delete $INC{"cf.pm"};	3233	delete $INC{"cf.pm"};
		3234	delete $INC{"cf/pod.pm"};
1125		3235
1126	# don't, removes xs symbols, too,	3236	# don't, removes xs symbols, too,
1127	# and global variables created in xs	3237	# and global variables created in xs
1128	#Symbol::delete_package __PACKAGE__;	3238	#Symbol::delete_package __PACKAGE__;
1129		3239
1130	# reload cf.pm	3240	warn "unload completed, starting to reload now";
		3241
1131	$msg->("reloading cf.pm");	3242	warn "reloading cf.pm";
1132	require cf;	3243	require cf;
		3244	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1133		3245
1134	# load config and database again	3246	warn "loading config and database again";
1135	cf::cfg_load;	3247	cf::reload_config;
1136	cf::db_load;
1137		3248
1138	# load extensions	3249	warn "loading extensions";
1139	$msg->("load extensions");
1140	cf::load_extensions;	3250	cf::load_extensions;
1141		3251
1142	# reattach attachments to objects	3252	warn "reattaching attachments to objects/players";
1143	$msg->("reattach");	3253	_global_reattach; # objects, sockets
1144	_global_reattach;	3254	warn "reattaching attachments to maps";
		3255	reattach $_ for values %MAP;
		3256	warn "reattaching attachments to players";
		3257	reattach $_ for values %PLAYER;
		3258
		3259	warn "leaving sync_job";
		3260
		3261	1
		3262	} or do {
		3263	warn $@;
		3264	warn "error while reloading, exiting.";
		3265	exit 1;
1145	};	3266	};
1146	$msg->($@) if $@;
1147		3267
1148	$msg->("reloaded");	3268	warn "reloaded";
1149	};	3269	};
1150		3270
1151	sub perl_reload() {	3271	our $RELOAD_WATCHER; # used only during reload
1152	_perl_reload {	3272
1153	warn $_[0];	3273	sub reload_perl() {
1154	print "$_[0]\n";	3274	# doing reload synchronously and two reloads happen back-to-back,
		3275	# coro crashes during coro_state_free->destroy here.
		3276
		3277	$RELOAD_WATCHER ||= Event->timer (
		3278	reentrant => 0,
		3279	after => 0,
		3280	data => WF_AUTOCANCEL,
		3281	cb => sub {
		3282	do_reload_perl;
		3283	undef $RELOAD_WATCHER;
		3284	},
1155	};	3285	);
1156	}	3286	}
1157		3287
1158	register "<global>", __PACKAGE__;
1159
1160	register_command "perl-reload" => sub {	3288	register_command "reload" => sub {
1161	my ($who, $arg) = @_;	3289	my ($who, $arg) = @_;
1162		3290
1163	if ($who->flag (FLAG_WIZ)) {	3291	if ($who->flag (FLAG_WIZ)) {
1164	_perl_reload {	3292	$who->message ("reloading server.");
1165	warn $_[0];	3293	async { reload_perl };
1166	$who->message ($_[0]);	3294	}
		3295	};
		3296
		3297	unshift @INC, $LIBDIR;
		3298
		3299	my $bug_warning = 0;
		3300
		3301	our @WAIT_FOR_TICK;
		3302	our @WAIT_FOR_TICK_BEGIN;
		3303
		3304	sub wait_for_tick {
		3305	return unless $TICK_WATCHER->is_active;
		3306	return if $Coro::current == $Coro::main;
		3307
		3308	my $signal = new Coro::Signal;
		3309	push @WAIT_FOR_TICK, $signal;
		3310	$signal->wait;
		3311	}
		3312
		3313	sub wait_for_tick_begin {
		3314	return unless $TICK_WATCHER->is_active;
		3315	return if $Coro::current == $Coro::main;
		3316
		3317	my $signal = new Coro::Signal;
		3318	push @WAIT_FOR_TICK_BEGIN, $signal;
		3319	$signal->wait;
		3320	}
		3321
		3322	my $min = 1e6;#d#
		3323	my $avg = 10;
		3324	$TICK_WATCHER = Event->timer (
		3325	reentrant => 0,
		3326	parked => 1,
		3327	prio => 0,
		3328	at => $NEXT_TICK || $TICK,
		3329	data => WF_AUTOCANCEL,
		3330	cb => sub {
		3331	if ($Coro::current != $Coro::main) {
		3332	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3333	unless ++$bug_warning > 10;
		3334	return;
		3335	}
		3336
		3337	$NOW = $tick_start = Event::time;
		3338
		3339	cf::server_tick; # one server iteration
		3340
		3341	0 && sync_job {#d#
		3342	for(1..10) {
		3343	my $t = Event::time;
		3344	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3345	or die;
		3346
		3347	$map->width (50);
		3348	$map->height (50);
		3349	$map->alloc;
		3350	$map->_load_objects ("/tmp/x.map", 1);
		3351	my $t = Event::time - $t;
		3352
		3353	#next unless $t < 0.0013;#d#
		3354	if ($t < $min) {
		3355	$min = $t;
		3356	}
		3357	$avg = $avg * 0.99 + $t * 0.01;
		3358	}
		3359	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3360	exit 0;
		3361	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1167	};	3362	};
1168	}
1169	};
1170		3363
1171	unshift @INC, $LIBDIR;	3364	$RUNTIME += $TICK;
1172
1173	$TICK_WATCHER = Event->timer (
1174	prio => 1,
1175	async => 1,
1176	at => $NEXT_TICK || 1,
1177	cb => sub {
1178	cf::server_tick; # one server iteration
1179
1180	my $NOW = Event::time;
1181	$NEXT_TICK += $TICK;	3365	$NEXT_TICK += $TICK;
		3366
		3367	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3368	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3369	Coro::async_pool {
		3370	write_runtime
		3371	or warn "ERROR: unable to write runtime file: $!";
		3372	};
		3373	}
		3374
		3375	# my $AFTER = Event::time;
		3376	# warn $AFTER - $NOW;#d#
		3377
		3378	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3379	$sig->send;
		3380	}
		3381	while (my $sig = shift @WAIT_FOR_TICK) {
		3382	$sig->send;
		3383	}
		3384
		3385	$NOW = Event::time;
1182		3386
1183	# if we are delayed by four ticks or more, skip them all	3387	# if we are delayed by four ticks or more, skip them all
1184	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3388	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1185		3389
1186	$TICK_WATCHER->at ($NEXT_TICK);	3390	$TICK_WATCHER->at ($NEXT_TICK);
1187	$TICK_WATCHER->start;	3391	$TICK_WATCHER->start;
		3392
		3393	$LOAD = ($NOW - $tick_start) / $TICK;
		3394	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3395
		3396	_post_tick;
		3397
		3398
1188	},	3399	},
1189	);	3400	);
1190		3401
		3402	{
		3403	BDB::max_poll_time $TICK * 0.1;
		3404	$BDB_POLL_WATCHER = Event->io (
		3405	reentrant => 0,
		3406	fd => BDB::poll_fileno,
		3407	poll => 'r',
		3408	prio => 0,
		3409	data => WF_AUTOCANCEL,
		3410	cb => \&BDB::poll_cb,
		3411	);
		3412	BDB::min_parallel 8;
		3413
		3414	BDB::set_sync_prepare {
		3415	my $status;
		3416	my $current = $Coro::current;
		3417	(
		3418	sub {
		3419	$status = $!;
		3420	$current->ready; undef $current;
		3421	},
		3422	sub {
		3423	Coro::schedule while defined $current;
		3424	$! = $status;
		3425	},
		3426	)
		3427	};
		3428
		3429	unless ($DB_ENV) {
		3430	$DB_ENV = BDB::db_env_create;
		3431
		3432	cf::sync_job {
		3433	eval {
		3434	BDB::db_env_open
		3435	$DB_ENV,
		3436	$BDBDIR,
		3437	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3438	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3439	0666;
		3440
		3441	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3442
		3443	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3444	$DB_ENV->set_lk_detect;
		3445	};
		3446
		3447	cf::cleanup "db_env_open(db): $@" if $@;
		3448	};
		3449	}
		3450	}
		3451
		3452	{
		3453	IO::AIO::min_parallel 8;
		3454
		3455	undef $Coro::AIO::WATCHER;
1191	IO::AIO::max_poll_time $TICK * 0.2;	3456	IO::AIO::max_poll_time $TICK * 0.1;
1192		3457	$AIO_POLL_WATCHER = Event->io (
1193	Event->io (fd => IO::AIO::poll_fileno,	3458	reentrant => 0,
		3459	data => WF_AUTOCANCEL,
		3460	fd => IO::AIO::poll_fileno,
1194	poll => 'r',	3461	poll => 'r',
1195	prio => 5,	3462	prio => 6,
1196	cb => \&IO::AIO::poll_cb);	3463	cb => \&IO::AIO::poll_cb,
		3464	);
		3465	}
		3466
		3467	my $_log_backtrace;
		3468
		3469	sub _log_backtrace {
		3470	my ($msg, @addr) = @_;
		3471
		3472	$msg =~ s/\n//;
		3473
		3474	# limit the # of concurrent backtraces
		3475	if ($_log_backtrace < 2) {
		3476	++$_log_backtrace;
		3477	async {
		3478	my @bt = fork_call {
		3479	@addr = map { sprintf "%x", $_ } @addr;
		3480	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3481	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3482	or die "addr2line: $!";
		3483
		3484	my @funcs;
		3485	my @res = <$fh>;
		3486	chomp for @res;
		3487	while (@res) {
		3488	my ($func, $line) = splice @res, 0, 2, ();
		3489	push @funcs, "[$func] $line";
		3490	}
		3491
		3492	@funcs
		3493	};
		3494
		3495	LOG llevInfo, "[ABT] $msg\n";
		3496	LOG llevInfo, "[ABT] $_\n" for @bt;
		3497	--$_log_backtrace;
		3498	};
		3499	} else {
		3500	LOG llevInfo, "[ABT] $msg\n";
		3501	LOG llevInfo, "[ABT] [suppressed]\n";
		3502	}
		3503	}
		3504
		3505	# load additional modules
		3506	use cf::pod;
		3507
		3508	END { cf::emergency_save }
1197		3509
1198	1	3510	1
1199		3511

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