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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 1.405 by root, Mon Dec 17 08:03:22 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;
5	use Storable;	8	use Socket;
		9	use EV 1.86;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
		13	use Storable ();
9		14
10	use IO::AIO ();	15	use Coro 4.32 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::EV;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::BDB;
		24	use Coro::Storable;
		25	use Coro::Util ();
		26
		27	use JSON::XS 2.01 ();
		28	use BDB ();
		29	use Data::Dumper;
		30	use Digest::MD5;
		31	use Fcntl;
11	use YAML::Syck ();	32	use YAML::Syck ();
		33	use IO::AIO 2.51 ();
12	use Time::HiRes;	34	use Time::HiRes;
13	use Event;	35	use Compress::LZF;
14	$Event::Eval = 1; # no idea why this is required, but it is	36	use Digest::MD5 ();
		37
		38	# configure various modules to our taste
		39	#
		40	$Storable::canonical = 1; # reduce rsync transfers
		41	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		42	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
15		43
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	45	$YAML::Syck::ImplicitUnicode = 1;
18		46
19	use strict;	47	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		48
		49	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
20		50
21	our %COMMAND = ();	51	our %COMMAND = ();
22	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
		53
		54	our @EXTS = (); # list of extension package names
23	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
		57	our %EXT_CORO = (); # coroutines bound to extensions
		58	our %EXT_MAP = (); # pluggable maps
24		59
25	_init_vars;	60	our $RELOAD; # number of reloads so far
26
27	our @EVENT;	61	our @EVENT;
28	our $LIBDIR = maps_directory "perl";
29		62
30	our $TICK = MAX_TIME * 1e-6;	63	our $CONFDIR = confdir;
		64	our $DATADIR = datadir;
		65	our $LIBDIR = "$DATADIR/ext";
		66	our $PODDIR = "$DATADIR/pod";
		67	our $MAPDIR = "$DATADIR/" . mapdir;
		68	our $LOCALDIR = localdir;
		69	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		70	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		71	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		72	our $RANDOMDIR = "$LOCALDIR/random";
		73	our $BDBDIR = "$LOCALDIR/db";
		74	our %RESOURCE;
		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 $USE_FSYNC = 1; # use fsync to write maps - default off
		82
		83	our $BDB_POLL_WATCHER;
		84	our $BDB_DEADLOCK_WATCHER;
		85	our $BDB_CHECKPOINT_WATCHER;
		86	our $BDB_TRICKLE_WATCHER;
		87	our $DB_ENV;
33		88
34	our %CFG;	89	our %CFG;
35		90
36	our $UPTIME; $UPTIME ||= time;	91	our $UPTIME; $UPTIME ||= time;
		92	our $RUNTIME;
		93	our $NOW;
		94
		95	our (%PLAYER, %PLAYER_LOADING); # all users
		96	our (%MAP, %MAP_LOADING ); # all maps
		97	our $LINK_MAP; # the special {link} map, which is always available
		98
		99	# used to convert map paths into valid unix filenames by replacing / by ∕
		100	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		101
		102	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		103	our $LOADAVG; # same thing, but with alpha-smoothing
		104	our $tick_start; # for load detecting purposes
		105
		106	binmode STDOUT;
		107	binmode STDERR;
		108
		109	# read virtual server time, if available
		110	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		111	open my $fh, "<", "$LOCALDIR/runtime"
		112	or die "unable to read runtime file: $!";
		113	$RUNTIME = <$fh> + 0.;
		114	}
		115
		116	mkdir $_
		117	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		118
		119	our $EMERGENCY_POSITION;
		120
		121	sub cf::map::normalise;
37		122
38	#############################################################################	123	#############################################################################
39		124
40	=head2 GLOBAL VARIABLES	125	=head2 GLOBAL VARIABLES
41		126
…		…
43		128
44	=item $cf::UPTIME	129	=item $cf::UPTIME
45		130
46	The timestamp of the server start (so not actually an uptime).	131	The timestamp of the server start (so not actually an uptime).
47		132
48	=item $cf::LIBDIR	133	=item $cf::RUNTIME
49		134
50	The perl library directory, where extensions and cf-specific modules can	135	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.	136	every server tick.
		137
		138	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		139	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		140	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		141
		142	Various directories - "/etc", read-only install directory, perl-library
		143	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		144	unique-items directory, player file directory, random maps directory and
		145	database environment.
		146
		147	=item $cf::NOW
		148
		149	The time of the last (current) server tick.
52		150
53	=item $cf::TICK	151	=item $cf::TICK
54		152
55	The interval between server ticks, in seconds.	153	The interval between server ticks, in seconds.
56		154
		155	=item $cf::LOADAVG
		156
		157	The current CPU load on the server (alpha-smoothed), as a value between 0
		158	(none) and 1 (overloaded), indicating how much time is spent on processing
		159	objects per tick. Healthy values are < 0.5.
		160
		161	=item $cf::LOAD
		162
		163	The raw value load value from the last tick.
		164
57	=item %cf::CFG	165	=item %cf::CFG
58		166
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	167	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
60	from wherever your confdir points to.	168	from wherever your confdir points to.
		169
		170	=item cf::wait_for_tick, cf::wait_for_tick_begin
		171
		172	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		173	returns directly I<after> the tick processing (and consequently, can only wake one process
		174	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		175
		176	=item @cf::INVOKE_RESULTS
		177
		178	This array contains the results of the last C<invoke ()> call. When
		179	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		180	that call.
61		181
62	=back	182	=back
63		183
64	=cut	184	=cut
65		185
66	BEGIN {	186	BEGIN {
67	*CORE::GLOBAL::warn = sub {	187	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	188	my $msg = join "", @_;
		189
69	$msg .= "\n"	190	$msg .= "\n"
70	unless $msg =~ /\n$/;	191	unless $msg =~ /\n$/;
71		192
72	print STDERR "cfperl: $msg";	193	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		194
73	LOG llevError, "cfperl: $msg";	195	LOG llevError, $msg;
74	};	196	};
75	}	197	}
76		198
		199	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		200	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		201	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		202	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		203	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		204	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	205	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
78		206
79	# we bless all objects into (empty) derived classes to force a method lookup	207	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	208	# within the Safe compartment.
81	for my $pkg (qw(	209	for my $pkg (qw(
		210	cf::global cf::attachable
82	cf::object cf::object::player	211	cf::object cf::object::player
83	cf::client_socket cf::player	212	cf::client cf::player
84	cf::arch cf::living	213	cf::arch cf::living
85	cf::map cf::party cf::region	214	cf::map cf::party cf::region
86	)) {	215	)) {
87	no strict 'refs';	216	no strict 'refs';
88	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	217	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
89	}	218	}
90		219
91	$Event::DIED = sub {	220	$EV::DIED = sub {
92	warn "error in event callback: @_";	221	warn "error in event callback: @_";
93	};	222	};
94		223
95	my %ext_pkg;	224	#############################################################################
96	my @exts;
97	my @hook;
98		225
99	=head2 UTILITY FUNCTIONS	226	=head2 UTILITY FUNCTIONS
100		227
101	=over 4	228	=over 4
102		229
103	=cut	230	=item dumpval $ref
104		231
105	use JSON::Syck (); # TODO# replace by JSON::PC once working	232	=cut
106		233
		234	sub dumpval {
		235	eval {
		236	local $SIG{__DIE__};
		237	my $d;
		238	if (1) {
		239	$d = new Data::Dumper([$_[0]], ["*var"]);
		240	$d->Terse(1);
		241	$d->Indent(2);
		242	$d->Quotekeys(0);
		243	$d->Useqq(1);
		244	#$d->Bless(...);
		245	$d->Seen($_[1]) if @_ > 1;
		246	$d = $d->Dump();
		247	}
		248	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		249	$d
		250	} || "[unable to dump $_[0]: '$@']";
		251	}
		252
107	=item $ref = cf::from_json $json	253	=item $ref = cf::decode_json $json
108		254
109	Converts a JSON string into the corresponding perl data structure.	255	Converts a JSON string into the corresponding perl data structure.
110		256
111	=cut
112
113	sub from_json($) {
114	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
115	JSON::Syck::Load $_[0]
116	}
117
118	=item $json = cf::to_json $ref	257	=item $json = cf::encode_json $ref
119		258
120	Converts a perl data structure into its JSON representation.	259	Converts a perl data structure into its JSON representation.
121		260
122	=cut	261	=cut
123		262
124	sub to_json($) {	263	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
125	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	264
126	JSON::Syck::Dump $_[0]	265	sub encode_json($) { $json_coder->encode ($_[0]) }
		266	sub decode_json($) { $json_coder->decode ($_[0]) }
		267
		268	=item cf::lock_wait $string
		269
		270	Wait until the given lock is available. See cf::lock_acquire.
		271
		272	=item my $lock = cf::lock_acquire $string
		273
		274	Wait until the given lock is available and then acquires it and returns
		275	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		276	for example when the coroutine gets canceled), the lock is automatically
		277	returned.
		278
		279	Locks are *not* recursive, locking from the same coro twice results in a
		280	deadlocked coro.
		281
		282	Lock names should begin with a unique identifier (for example, cf::map::find
		283	uses map_find and cf::map::load uses map_load).
		284
		285	=item $locked = cf::lock_active $string
		286
		287	Return true if the lock is currently active, i.e. somebody has locked it.
		288
		289	=cut
		290
		291	our %LOCK;
		292	our %LOCKER;#d#
		293
		294	sub lock_wait($) {
		295	my ($key) = @_;
		296
		297	if ($LOCKER{$key} == $Coro::current) {#d#
		298	Carp::cluck "lock_wait($key) for already-acquired lock";#d#
		299	return;#d#
		300	}#d#
		301
		302	# wait for lock, if any
		303	while ($LOCK{$key}) {
		304	push @{ $LOCK{$key} }, $Coro::current;
		305	Coro::schedule;
		306	}
		307	}
		308
		309	sub lock_acquire($) {
		310	my ($key) = @_;
		311
		312	# wait, to be sure we are not locked
		313	lock_wait $key;
		314
		315	$LOCK{$key} = [];
		316	$LOCKER{$key} = $Coro::current;#d#
		317
		318	Coro::guard {
		319	delete $LOCKER{$key};#d#
		320	# wake up all waiters, to be on the safe side
		321	$_->ready for @{ delete $LOCK{$key} };
		322	}
		323	}
		324
		325	sub lock_active($) {
		326	my ($key) = @_;
		327
		328	! ! $LOCK{$key}
		329	}
		330
		331	sub freeze_mainloop {
		332	return unless $TICK_WATCHER->is_active;
		333
		334	my $guard = Coro::guard {
		335	$TICK_WATCHER->start;
		336	};
		337	$TICK_WATCHER->stop;
		338	$guard
		339	}
		340
		341	=item cf::periodic $interval, $cb
		342
		343	Like EV::periodic, but randomly selects a starting point so that the actions
		344	get spread over timer.
		345
		346	=cut
		347
		348	sub periodic($$) {
		349	my ($interval, $cb) = @_;
		350
		351	my $start = rand List::Util::min 180, $interval;
		352
		353	EV::periodic $start, $interval, 0, $cb
		354	}
		355
		356	=item cf::get_slot $time[, $priority[, $name]]
		357
		358	Allocate $time seconds of blocking CPU time at priority C<$priority>:
		359	This call blocks and returns only when you have at least C<$time> seconds
		360	of cpu time till the next tick. The slot is only valid till the next cede.
		361
		362	The optional C<$name> can be used to identify the job to run. It might be
		363	used for statistical purposes and should identify the same time-class.
		364
		365	Useful for short background jobs.
		366
		367	=cut
		368
		369	our @SLOT_QUEUE;
		370	our $SLOT_QUEUE;
		371
		372	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		373	$SLOT_QUEUE = Coro::async {
		374	$Coro::current->desc ("timeslot manager");
		375
		376	my $signal = new Coro::Signal;
		377
		378	while () {
		379	next_job:
		380	my $avail = cf::till_tick;
		381	if ($avail > 0.01) {
		382	for (0 .. $#SLOT_QUEUE) {
		383	if ($SLOT_QUEUE[$_][0] < $avail) {
		384	my $job = splice @SLOT_QUEUE, $_, 1, ();
		385	$job->[2]->send;
		386	Coro::cede;
		387	goto next_job;
		388	}
		389	}
		390	}
		391
		392	if (@SLOT_QUEUE) {
		393	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		394	push @cf::WAIT_FOR_TICK, $signal;
		395	$signal->wait;
		396	} else {
		397	Coro::schedule;
		398	}
		399	}
		400	};
		401
		402	sub get_slot($;$$) {
		403	my ($time, $pri, $name) = @_;
		404
		405	$time = $TICK * .6 if $time > $TICK * .6;
		406	my $sig = new Coro::Signal;
		407
		408	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		409	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		410	$SLOT_QUEUE->ready;
		411	$sig->wait;
		412	}
		413
		414	=item cf::async { BLOCK }
		415
		416	Currently the same as Coro::async_pool, meaning you cannot use
		417	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		418	thing you are allowed to do is call C<prio> on it.
		419
		420	=cut
		421
		422	BEGIN { *async = \&Coro::async_pool }
		423
		424	=item cf::sync_job { BLOCK }
		425
		426	The design of Deliantra requires that the main coroutine ($Coro::main)
		427	is always able to handle events or runnable, as Deliantra is only
		428	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		429	acceptable.
		430
		431	If it must be done, put the blocking parts into C<sync_job>. This will run
		432	the given BLOCK in another coroutine while waiting for the result. The
		433	server will be frozen during this time, so the block should either finish
		434	fast or be very important.
		435
		436	=cut
		437
		438	sub sync_job(&) {
		439	my ($job) = @_;
		440
		441	if ($Coro::current == $Coro::main) {
		442	my $time = EV::time;
		443
		444	# this is the main coro, too bad, we have to block
		445	# till the operation succeeds, freezing the server :/
		446
		447	LOG llevError, Carp::longmess "sync job";#d#
		448
		449	# TODO: use suspend/resume instead
		450	# (but this is cancel-safe)
		451	my $freeze_guard = freeze_mainloop;
		452
		453	my $busy = 1;
		454	my @res;
		455
		456	(async {
		457	$Coro::current->desc ("sync job coro");
		458	@res = eval { $job->() };
		459	warn $@ if $@;
		460	undef $busy;
		461	})->prio (Coro::PRIO_MAX);
		462
		463	while ($busy) {
		464	if (Coro::nready) {
		465	Coro::cede_notself;
		466	} else {
		467	EV::loop EV::LOOP_ONESHOT;
		468	}
		469	}
		470
		471	$time = EV::time - $time;
		472
		473	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		474	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		475
		476	$tick_start += $time; # do not account sync jobs to server load
		477
		478	wantarray ? @res : $res[0]
		479	} else {
		480	# we are in another coroutine, how wonderful, everything just works
		481
		482	$job->()
		483	}
		484	}
		485
		486	=item $coro = cf::async_ext { BLOCK }
		487
		488	Like async, but this coro is automatically being canceled when the
		489	extension calling this is being unloaded.
		490
		491	=cut
		492
		493	sub async_ext(&) {
		494	my $cb = shift;
		495
		496	my $coro = &Coro::async ($cb);
		497
		498	$coro->on_destroy (sub {
		499	delete $EXT_CORO{$coro+0};
		500	});
		501	$EXT_CORO{$coro+0} = $coro;
		502
		503	$coro
		504	}
		505
		506	=item fork_call { }, $args
		507
		508	Executes the given code block with the given arguments in a seperate
		509	process, returning the results. Everything must be serialisable with
		510	Coro::Storable. May, of course, block. Note that the executed sub may
		511	never block itself or use any form of event handling.
		512
		513	=cut
		514
		515	sub fork_call(&@) {
		516	my ($cb, @args) = @_;
		517
		518	# we seemingly have to make a local copy of the whole thing,
		519	# otherwise perl prematurely frees the stuff :/
		520	# TODO: investigate and fix (likely this will be rather laborious)
		521
		522	my @res = Coro::Util::fork_eval {
		523	reset_signals;
		524	&$cb
		525	}, @args;
		526
		527	wantarray ? @res : $res[-1]
		528	}
		529
		530	=item $value = cf::db_get $family => $key
		531
		532	Returns a single value from the environment database.
		533
		534	=item cf::db_put $family => $key => $value
		535
		536	Stores the given C<$value> in the family. It can currently store binary
		537	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		538
		539	=item $db = cf::db_table "name"
		540
		541	Create and/or open a new database table. The string must not be "db" and must be unique
		542	within each server.
		543
		544	=cut
		545
		546	sub db_table($) {
		547	my ($name) = @_;
		548	my $db = BDB::db_create $DB_ENV;
		549
		550	eval {
		551	$db->set_flags (BDB::CHKSUM);
		552
		553	utf8::encode $name;
		554	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		555	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		556	cf::cleanup "db_open(db): $!" if $!;
		557	};
		558	cf::cleanup "db_open(db): $@" if $@;
		559
		560	$db
		561	}
		562
		563	our $DB;
		564
		565	sub db_init {
		566	cf::sync_job {
		567	$DB ||= db_table "db";
		568	};
		569	}
		570
		571	sub db_get($$) {
		572	my $key = "$_[0]/$_[1]";
		573
		574	cf::sync_job {
		575	BDB::db_get $DB, undef, $key, my $data;
		576
		577	$! ? ()
		578	: $data
		579	}
		580	}
		581
		582	sub db_put($$$) {
		583	BDB::dbreq_pri 4;
		584	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		585	}
		586
		587	=item cf::cache $id => [$paths...], $processversion => $process
		588
		589	Generic caching function that returns the value of the resource $id,
		590	caching and regenerating as required.
		591
		592	This function can block.
		593
		594	=cut
		595
		596	sub cache {
		597	my ($id, $src, $processversion, $process) = @_;
		598
		599	my $meta =
		600	join "\x00",
		601	$processversion,
		602	map {
		603	aio_stat $_
		604	and Carp::croak "$_: $!";
		605
		606	($_, (stat _)[7,9])
		607	} @$src;
		608
		609	my $dbmeta = db_get cache => "$id/meta";
		610	if ($dbmeta ne $meta) {
		611	# changed, we may need to process
		612
		613	my @data;
		614	my $md5;
		615
		616	for (0 .. $#$src) {
		617	0 <= aio_load $src->[$_], $data[$_]
		618	or Carp::croak "$src->[$_]: $!";
		619	}
		620
		621	# if processing is expensive, check
		622	# checksum first
		623	if (1) {
		624	$md5 =
		625	join "\x00",
		626	$processversion,
		627	map {
		628	cf::cede_to_tick;
		629	($src->[$_], Digest::MD5::md5_hex $data[$_])
		630	} 0.. $#$src;
		631
		632
		633	my $dbmd5 = db_get cache => "$id/md5";
		634	if ($dbmd5 eq $md5) {
		635	db_put cache => "$id/meta", $meta;
		636
		637	return db_get cache => "$id/data";
		638	}
		639	}
		640
		641	my $t1 = Time::HiRes::time;
		642	my $data = $process->(\@data);
		643	my $t2 = Time::HiRes::time;
		644
		645	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		646
		647	db_put cache => "$id/data", $data;
		648	db_put cache => "$id/md5" , $md5;
		649	db_put cache => "$id/meta", $meta;
		650
		651	return $data;
		652	}
		653
		654	db_get cache => "$id/data"
		655	}
		656
		657	=item cf::datalog type => key => value, ...
		658
		659	Log a datalog packet of the given type with the given key-value pairs.
		660
		661	=cut
		662
		663	sub datalog($@) {
		664	my ($type, %kv) = @_;
		665	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
127	}	666	}
128		667
129	=back	668	=back
130		669
131	=cut	670	=cut
132		671
133	#############################################################################	672	#############################################################################
134		673
135	=head2 EVENTS AND OBJECT ATTACHMENTS	674	=head2 ATTACHABLE OBJECTS
		675
		676	Many objects in crossfire are so-called attachable objects. That means you can
		677	attach callbacks/event handlers (a collection of which is called an "attachment")
		678	to it. All such attachable objects support the following methods.
		679
		680	In the following description, CLASS can be any of C<global>, C<object>
		681	C<player>, C<client> or C<map> (i.e. the attachable objects in
		682	Deliantra).
136		683
137	=over 4	684	=over 4
138		685
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...)	686	=item $attachable->attach ($attachment, key => $value...)
152		687
153	=item $map->detach ($attachment)	688	=item $attachable->detach ($attachment)
154		689
155	Attach/detach a pre-registered attachment to a map.	690	Attach/detach a pre-registered attachment to a specific object and give it
		691	the specified key/value pairs as arguments.
156		692
157	=item $bool = $object->attached ($name)	693	Example, attach a minesweeper attachment to the given object, making it a
		694	10x10 minesweeper game:
158		695
159	=item $bool = $player->attached ($name)	696	$obj->attach (minesweeper => width => 10, height => 10);
160		697
161	=item $bool = $map->attached ($name)	698	=item $bool = $attachable->attached ($name)
162		699
163	Checks wether the named attachment is currently attached to the object.	700	Checks wether the named attachment is currently attached to the object.
164		701
165	=item cf::attach_global ...	702	=item cf::CLASS->attach ...
166		703
167	Attach handlers for global events.	704	=item cf::CLASS->detach ...
168		705
169	This and all following C<attach_*>-functions expect any number of the	706	Define an anonymous attachment and attach it to all objects of the given
170	following handler/hook descriptions:	707	CLASS. See the next function for an explanation of its arguments.
		708
		709	You can attach to global events by using the C<cf::global> class.
		710
		711	Example, log all player logins:
		712
		713	cf::player->attach (
		714	on_login => sub {
		715	my ($pl) = @_;
		716	...
		717	},
		718	);
		719
		720	Example, attach to the jeweler skill:
		721
		722	cf::object->attach (
		723	type => cf::SKILL,
		724	subtype => cf::SK_JEWELER,
		725	on_use_skill => sub {
		726	my ($sk, $ob, $part, $dir, $msg) = @_;
		727	...
		728	},
		729	);
		730
		731	=item cf::CLASS::attachment $name, ...
		732
		733	Register an attachment by C<$name> through which attachable objects of the
		734	given CLASS can refer to this attachment.
		735
		736	Some classes such as crossfire maps and objects can specify attachments
		737	that are attached at load/instantiate time, thus the need for a name.
		738
		739	These calls expect any number of the following handler/hook descriptions:
171		740
172	=over 4	741	=over 4
173		742
174	=item prio => $number	743	=item prio => $number
175		744
…		…
177	by another C<prio> setting). Lower priority handlers get executed	746	by another C<prio> setting). Lower priority handlers get executed
178	earlier. The default priority is C<0>, and many built-in handlers are	747	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	748	registered at priority C<-1000>, so lower priorities should not be used
180	unless you know what you are doing.	749	unless you know what you are doing.
181		750
		751	=item type => $type
		752
		753	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		754	given type of objects only (the additional parameter C<subtype> can be
		755	used to further limit to the given subtype).
		756
182	=item on_I<event> => \&cb	757	=item on_I<event> => \&cb
183		758
184	Call the given code reference whenever the named event happens (event is	759	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	760	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	761	handlers are recognised generally depends on the type of object these
…		…
195	package and register them. Only handlers for eevents supported by the	770	package and register them. Only handlers for eevents supported by the
196	object/class are recognised.	771	object/class are recognised.
197		772
198	=back	773	=back
199		774
200	=item cf::attach_to_type $object_type, $subtype, ...	775	Example, define an attachment called "sockpuppet" that calls the given
		776	event handler when a monster attacks:
201		777
202	Attach handlers for a specific object type (e.g. TRANSPORT) and	778	cf::object::attachment sockpuppet =>
203	subtype. If C<$subtype> is zero or undef, matches all objects of the given	779	on_skill_attack => sub {
204	type.	780	my ($self, $victim) = @_;
205		781	...
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	}	782	}
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	783	}
427	}
428		784
429	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	785	=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		786
455	Just because you have a perl object does not mean that the corresponding	787	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	788	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	789	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	790	can be used to test for existence of the C object part without causing an
459	exception.	791	exception.
460		792
		793	=cut
		794
		795	# the following variables are defined in .xs and must not be re-created
		796	our @CB_GLOBAL = (); # registry for all global events
		797	our @CB_ATTACHABLE = (); # registry for all attachables
		798	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		799	our @CB_PLAYER = ();
		800	our @CB_CLIENT = ();
		801	our @CB_TYPE = (); # registry for type (cf-object class) based events
		802	our @CB_MAP = ();
		803
		804	my %attachment;
		805
		806	sub cf::attachable::thawer_merge {
		807	# simply override everything except _meta
		808	local $_[0]{_meta};
		809	%{$_[0]} = %{$_[1]};
		810	}
		811
		812	sub _attach_cb($$$$) {
		813	my ($registry, $event, $prio, $cb) = @_;
		814
		815	use sort 'stable';
		816
		817	$cb = [$prio, $cb];
		818
		819	@{$registry->[$event]} = sort
		820	{ $a->[0] cmp $b->[0] }
		821	@{$registry->[$event] || []}, $cb;
		822	}
		823
		824	# hack
		825	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		826
		827	# attach handles attaching event callbacks
		828	# the only thing the caller has to do is pass the correct
		829	# registry (== where the callback attaches to).
		830	sub _attach {
		831	my ($registry, $klass, @arg) = @_;
		832
		833	my $object_type;
		834	my $prio = 0;
		835	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		836
		837	#TODO: get rid of this hack
		838	if ($attachable_klass{$klass}) {
		839	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		840	}
		841
		842	while (@arg) {
		843	my $type = shift @arg;
		844
		845	if ($type eq "prio") {
		846	$prio = shift @arg;
		847
		848	} elsif ($type eq "type") {
		849	$object_type = shift @arg;
		850	$registry = $CB_TYPE[$object_type] ||= [];
		851
		852	} elsif ($type eq "subtype") {
		853	defined $object_type or Carp::croak "subtype specified without type";
		854	my $object_subtype = shift @arg;
		855	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		856
		857	} elsif ($type eq "package") {
		858	my $pkg = shift @arg;
		859
		860	while (my ($name, $id) = each %cb_id) {
		861	if (my $cb = $pkg->can ($name)) {
		862	_attach_cb $registry, $id, $prio, $cb;
		863	}
		864	}
		865
		866	} elsif (exists $cb_id{$type}) {
		867	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		868
		869	} elsif (ref $type) {
		870	warn "attaching objects not supported, ignoring.\n";
		871
		872	} else {
		873	shift @arg;
		874	warn "attach argument '$type' not supported, ignoring.\n";
		875	}
		876	}
		877	}
		878
		879	sub _object_attach {
		880	my ($obj, $name, %arg) = @_;
		881
		882	return if exists $obj->{_attachment}{$name};
		883
		884	if (my $attach = $attachment{$name}) {
		885	my $registry = $obj->registry;
		886
		887	for (@$attach) {
		888	my ($klass, @attach) = @$_;
		889	_attach $registry, $klass, @attach;
		890	}
		891
		892	$obj->{$name} = \%arg;
		893	} else {
		894	warn "object uses attachment '$name' which is not available, postponing.\n";
		895	}
		896
		897	$obj->{_attachment}{$name} = undef;
		898	}
		899
		900	sub cf::attachable::attach {
		901	if (ref $_[0]) {
		902	_object_attach @_;
		903	} else {
		904	_attach shift->_attach_registry, @_;
		905	}
		906	_recalc_want;
		907	};
		908
		909	# all those should be optimised
		910	sub cf::attachable::detach {
		911	my ($obj, $name) = @_;
		912
		913	if (ref $obj) {
		914	delete $obj->{_attachment}{$name};
		915	reattach ($obj);
		916	} else {
		917	Carp::croak "cannot, currently, detach class attachments";
		918	}
		919	_recalc_want;
		920	};
		921
		922	sub cf::attachable::attached {
		923	my ($obj, $name) = @_;
		924
		925	exists $obj->{_attachment}{$name}
		926	}
		927
		928	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		929	eval "#line " . __LINE__ . " 'cf.pm'
		930	sub cf::\L$klass\E::_attach_registry {
		931	(\\\@CB_$klass, KLASS_$klass)
		932	}
		933
		934	sub cf::\L$klass\E::attachment {
		935	my \$name = shift;
		936
		937	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		938	}
		939	";
		940	die if $@;
		941	}
		942
		943	our $override;
		944	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		945
		946	sub override {
		947	$override = 1;
		948	@INVOKE_RESULTS = (@_);
		949	}
		950
		951	sub do_invoke {
		952	my $event = shift;
		953	my $callbacks = shift;
		954
		955	@INVOKE_RESULTS = ();
		956
		957	local $override;
		958
		959	for (@$callbacks) {
		960	eval { &{$_->[1]} };
		961
		962	if ($@) {
		963	warn "$@";
		964	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		965	override;
		966	}
		967
		968	return 1 if $override;
		969	}
		970
		971	0
		972	}
		973
		974	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		975
		976	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		977
		978	Generate an object-specific event with the given arguments.
		979
		980	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		981	removed in future versions), and there is no public API to access override
		982	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		983
461	=back	984	=back
462		985
463	=cut	986	=cut
464
465	*cf::object::valid =
466	*cf::player::valid =
467	*cf::map::valid = \&cf::_valid;
468		987
469	#############################################################################	988	#############################################################################
470	# object support	989	# object support
471		990
472	sub instantiate {	991	sub _object_equal($$);
		992	sub _object_equal($$) {
		993	my ($a, $b) = @_;
		994
		995	return 0 unless (ref $a) eq (ref $b);
		996
		997	if ("HASH" eq ref $a) {
		998	my @ka = keys %$a;
		999	my @kb = keys %$b;
		1000
		1001	return 0 if @ka != @kb;
		1002
		1003	for (0 .. $#ka) {
		1004	return 0 unless $ka[$_] eq $kb[$_];
		1005	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1006	}
		1007
		1008	} elsif ("ARRAY" eq ref $a) {
		1009
		1010	return 0 if @$a != @$b;
		1011
		1012	for (0 .. $#$a) {
		1013	return 0 unless _object_equal $a->[$_], $b->[$_];
		1014	}
		1015
		1016	} elsif ($a ne $b) {
		1017	return 0;
		1018	}
		1019
		1020	1
		1021	}
		1022
		1023	our $SLOW_MERGES;#d#
		1024	sub _can_merge {
473	my ($obj, $data) = @_;	1025	my ($ob1, $ob2) = @_;
474		1026
475	$data = from_json $data;	1027	++$SLOW_MERGES;#d#
476		1028
477	for (@$data) {	1029	# we do the slow way here
478	my ($name, $args) = @$_;	1030	return _object_equal $ob1, $ob2
479
480	$obj->attach ($name, %{$args || {} });
481	}
482	}	1031	}
483		1032
484	# basically do the same as instantiate, without calling instantiate
485	sub reattach {	1033	sub reattach {
		1034	# basically do the same as instantiate, without calling instantiate
486	my ($obj) = @_;	1035	my ($obj) = @_;
		1036
		1037	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1038
487	my $registry = $obj->registry;	1039	my $registry = $obj->registry;
488		1040
489	@$registry = ();	1041	@$registry = ();
490		1042
491	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1043	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
492		1044
493	for my $name (keys %{ $obj->{_attachment} || {} }) {	1045	for my $name (keys %{ $obj->{_attachment} || {} }) {
494	if (my $attach = $attachment{$name}) {	1046	if (my $attach = $attachment{$name}) {
495	for (@$attach) {	1047	for (@$attach) {
496	my ($klass, @attach) = @$_;	1048	my ($klass, @attach) = @$_;
497	_attach @$registry, $klass, @attach;	1049	_attach $registry, $klass, @attach;
498	}	1050	}
499	} else {	1051	} else {
500	warn "object uses attachment '$name' that is not available, postponing.\n";	1052	warn "object uses attachment '$name' that is not available, postponing.\n";
501	}	1053	}
502	}	1054	}
503	}	1055	}
504		1056
505	sub object_freezer_save {	1057	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	$$rdata . Dumper $objs
542	}
543
544	sub object_thawer_load {
545	my ($filename) = @_;
546
547	local $/;
548
549	my $av;
550
551	#TODO: use sysread etc.
552	if (open my $data, "<:raw:perlio", $filename) {
553	$data = <$data>;
554	if (open my $pst, "<:raw:perlio", "$filename.pst") {
555	$av = eval { (Storable::thaw <$pst>)->{objs} };
556	}
557	return ($data, $av);
558	}
559
560	()
561	}
562
563	attach_to_objects
564	prio => -1000000,	1058	prio => -1000000,
		1059	on_instantiate => sub {
		1060	my ($obj, $data) = @_;
		1061
		1062	$data = decode_json $data;
		1063
		1064	for (@$data) {
		1065	my ($name, $args) = @$_;
		1066
		1067	$obj->attach ($name, %{$args || {} });
		1068	}
		1069	},
		1070	on_reattach => \&reattach,
565	on_clone => sub {	1071	on_clone => sub {
566	my ($src, $dst) = @_;	1072	my ($src, $dst) = @_;
567		1073
568	@{$dst->registry} = @{$src->registry};	1074	@{$dst->registry} = @{$src->registry};
569		1075
570	%$dst = %$src;	1076	%$dst = %$src;
571		1077
572	%{$dst->{_attachment}} = %{$src->{_attachment}}	1078	%{$dst->{_attachment}} = %{$src->{_attachment}}
573	if exists $src->{_attachment};	1079	if exists $src->{_attachment};
574	},	1080	},
575	;	1081	);
		1082
		1083	sub object_freezer_save {
		1084	my ($filename, $rdata, $objs) = @_;
		1085
		1086	sync_job {
		1087	if (length $$rdata) {
		1088	utf8::decode (my $decname = $filename);
		1089	warn sprintf "saving %s (%d,%d)\n",
		1090	$decname, length $$rdata, scalar @$objs;
		1091
		1092	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1093	chmod SAVE_MODE, $fh;
		1094	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1095	aio_fsync $fh if $cf::USE_FSYNC;
		1096	close $fh;
		1097
		1098	if (@$objs) {
		1099	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1100	chmod SAVE_MODE, $fh;
		1101	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1102	aio_write $fh, 0, (length $data), $data, 0;
		1103	aio_fsync $fh if $cf::USE_FSYNC;
		1104	close $fh;
		1105	aio_rename "$filename.pst~", "$filename.pst";
		1106	}
		1107	} else {
		1108	aio_unlink "$filename.pst";
		1109	}
		1110
		1111	aio_rename "$filename~", $filename;
		1112	} else {
		1113	warn "FATAL: $filename~: $!\n";
		1114	}
		1115	} else {
		1116	aio_unlink $filename;
		1117	aio_unlink "$filename.pst";
		1118	}
		1119	};
		1120	}
		1121
		1122	sub object_freezer_as_string {
		1123	my ($rdata, $objs) = @_;
		1124
		1125	use Data::Dumper;
		1126
		1127	$$rdata . Dumper $objs
		1128	}
		1129
		1130	sub object_thawer_load {
		1131	my ($filename) = @_;
		1132
		1133	my ($data, $av);
		1134
		1135	(aio_load $filename, $data) >= 0
		1136	or return;
		1137
		1138	unless (aio_stat "$filename.pst") {
		1139	(aio_load "$filename.pst", $av) >= 0
		1140	or return;
		1141
		1142	my $st = eval { Coro::Storable::thaw $av };
		1143	$av = $st->{objs};
		1144	}
		1145
		1146	utf8::decode (my $decname = $filename);
		1147	warn sprintf "loading %s (%d,%d)\n",
		1148	$decname, length $data, scalar @{$av || []};
		1149
		1150	($data, $av)
		1151	}
		1152
		1153	=head2 COMMAND CALLBACKS
		1154
		1155	=over 4
		1156
		1157	=cut
576		1158
577	#############################################################################	1159	#############################################################################
578	# command handling &c	1160	# command handling &c
579		1161
580	=item cf::register_command $name => \&callback($ob,$args);	1162	=item cf::register_command $name => \&callback($ob,$args);
…		…
593	push @{ $COMMAND{$name} }, [$caller, $cb];	1175	push @{ $COMMAND{$name} }, [$caller, $cb];
594	}	1176	}
595		1177
596	=item cf::register_extcmd $name => \&callback($pl,$packet);	1178	=item cf::register_extcmd $name => \&callback($pl,$packet);
597		1179
598	Register a callbackf ro execution when the client sends an extcmd packet.	1180	Register a callback for execution when the client sends an (synchronous)
		1181	extcmd packet. Ext commands will be processed in the order they are
		1182	received by the server, like other user commands. The first argument is
		1183	the logged-in player. Ext commands can only be processed after a player
		1184	has logged in successfully.
599		1185
600	If the callback returns something, it is sent back as if reply was being	1186	If the callback returns something, it is sent back as if reply was being
601	called.	1187	called.
602		1188
		1189	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1190
		1191	Register a callback for execution when the client sends an (asynchronous)
		1192	exticmd packet. Exti commands are processed by the server as soon as they
		1193	are received, i.e. out of order w.r.t. other commands. The first argument
		1194	is a client socket. Exti commands can be received anytime, even before
		1195	log-in.
		1196
		1197	If the callback returns something, it is sent back as if reply was being
		1198	called.
		1199
603	=cut	1200	=cut
604		1201
605	sub register_extcmd {	1202	sub register_extcmd {
606	my ($name, $cb) = @_;	1203	my ($name, $cb) = @_;
607		1204
608	my $caller = caller;
609	#warn "registering extcmd '$name' to '$caller'";
610
611	$EXTCMD{$name} = [$cb, $caller];	1205	$EXTCMD{$name} = $cb;
612	}	1206	}
613		1207
614	attach_to_players	1208	sub register_exticmd {
		1209	my ($name, $cb) = @_;
		1210
		1211	$EXTICMD{$name} = $cb;
		1212	}
		1213
		1214	cf::player->attach (
615	on_command => sub {	1215	on_command => sub {
616	my ($pl, $name, $params) = @_;	1216	my ($pl, $name, $params) = @_;
617		1217
618	my $cb = $COMMAND{$name}	1218	my $cb = $COMMAND{$name}
619	or return;	1219	or return;
…		…
625	cf::override;	1225	cf::override;
626	},	1226	},
627	on_extcmd => sub {	1227	on_extcmd => sub {
628	my ($pl, $buf) = @_;	1228	my ($pl, $buf) = @_;
629		1229
630	my $msg = eval { from_json $buf };	1230	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
631		1231
632	if (ref $msg) {	1232	if (ref $msg) {
		1233	my ($type, $reply, @payload) =
		1234	"ARRAY" eq ref $msg
		1235	? @$msg
		1236	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1237
		1238	my @reply;
		1239
633	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1240	if (my $cb = $EXTCMD{$type}) {
634	if (my %reply = $cb->[0]->($pl, $msg)) {	1241	@reply = $cb->($pl, @payload);
635	$pl->ext_reply ($msg->{msgid}, %reply);	1242	}
		1243
		1244	$pl->ext_reply ($reply, @reply)
		1245	if $reply;
		1246
		1247	} else {
		1248	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1249	}
		1250
		1251	cf::override;
		1252	},
		1253	);
		1254
		1255	sub load_extensions {
		1256	cf::sync_job {
		1257	my %todo;
		1258
		1259	for my $path (<$LIBDIR/*.ext>) {
		1260	next unless -r $path;
		1261
		1262	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1263	my $base = $1;
		1264	my $pkg = $1;
		1265	$pkg =~ s/[^[:word:]]/_/g;
		1266	$pkg = "ext::$pkg";
		1267
		1268	open my $fh, "<:utf8", $path
		1269	or die "$path: $!";
		1270
		1271	my $source = do { local $/; <$fh> };
		1272
		1273	my %ext = (
		1274	path => $path,
		1275	base => $base,
		1276	pkg => $pkg,
		1277	);
		1278
		1279	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1280	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1281
		1282	$ext{source} =
		1283	"package $pkg; use strict; use utf8;\n"
		1284	. "#line 1 \"$path\"\n{\n"
		1285	. $source
		1286	. "\n};\n1";
		1287
		1288	$todo{$base} = \%ext;
		1289	}
		1290
		1291	my %done;
		1292	while (%todo) {
		1293	my $progress;
		1294
		1295	while (my ($k, $v) = each %todo) {
		1296	for (split /,\s*/, $v->{meta}{depends}) {
		1297	goto skip
		1298	unless exists $done{$_};
		1299	}
		1300
		1301	warn "... loading '$k' into '$v->{pkg}'\n";
		1302
		1303	unless (eval $v->{source}) {
		1304	my $msg = $@ ? "$v->{path}: $@\n"
		1305	: "$v->{base}: extension inactive.\n";
		1306
		1307	if (exists $v->{meta}{mandatory}) {
		1308	warn $msg;
		1309	warn "mandatory extension failed to load, exiting.\n";
		1310	exit 1;
		1311	}
		1312
		1313	warn $msg;
		1314	}
		1315
		1316	$done{$k} = delete $todo{$k};
		1317	push @EXTS, $v->{pkg};
		1318	$progress = 1;
		1319	}
		1320
		1321	skip:
		1322	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1323	unless $progress;
		1324	}
		1325	};
		1326	}
		1327
		1328	#############################################################################
		1329
		1330	=back
		1331
		1332	=head2 CORE EXTENSIONS
		1333
		1334	Functions and methods that extend core crossfire objects.
		1335
		1336	=cut
		1337
		1338	package cf::player;
		1339
		1340	use Coro::AIO;
		1341
		1342	=head3 cf::player
		1343
		1344	=over 4
		1345
		1346	=item cf::player::num_playing
		1347
		1348	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1349
		1350	=cut
		1351
		1352	sub num_playing {
		1353	scalar grep
		1354	$_->ob->map
		1355	&& !$_->hidden
		1356	&& !$_->ob->flag (cf::FLAG_WIZ),
		1357	cf::player::list
		1358	}
		1359
		1360	=item cf::player::find $login
		1361
		1362	Returns the given player object, loading it if necessary (might block).
		1363
		1364	=cut
		1365
		1366	sub playerdir($) {
		1367	"$PLAYERDIR/"
		1368	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1369	}
		1370
		1371	sub path($) {
		1372	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1373
		1374	(playerdir $login) . "/playerdata"
		1375	}
		1376
		1377	sub find_active($) {
		1378	$cf::PLAYER{$_[0]}
		1379	and $cf::PLAYER{$_[0]}->active
		1380	and $cf::PLAYER{$_[0]}
		1381	}
		1382
		1383	sub exists($) {
		1384	my ($login) = @_;
		1385
		1386	$cf::PLAYER{$login}
		1387	or cf::sync_job { !aio_stat path $login }
		1388	}
		1389
		1390	sub find($) {
		1391	return $cf::PLAYER{$_[0]} || do {
		1392	my $login = $_[0];
		1393
		1394	my $guard = cf::lock_acquire "user_find:$login";
		1395
		1396	$cf::PLAYER{$_[0]} || do {
		1397	# rename old playerfiles to new ones
		1398	#TODO: remove when no longer required
		1399	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1400	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1401	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1402	aio_unlink +(playerdir $login) . "/$login.pl";
		1403
		1404	my $f = new_from_file cf::object::thawer path $login
		1405	or return;
		1406
		1407	my $pl = cf::player::load_pl $f
		1408	or return;
		1409	local $cf::PLAYER_LOADING{$login} = $pl;
		1410	$f->resolve_delayed_derefs;
		1411	$cf::PLAYER{$login} = $pl
		1412	}
		1413	}
		1414	}
		1415
		1416	sub save($) {
		1417	my ($pl) = @_;
		1418
		1419	return if $pl->{deny_save};
		1420
		1421	my $path = path $pl;
		1422	my $guard = cf::lock_acquire "user_save:$path";
		1423
		1424	return if $pl->{deny_save};
		1425
		1426	aio_mkdir playerdir $pl, 0770;
		1427	$pl->{last_save} = $cf::RUNTIME;
		1428
		1429	$pl->save_pl ($path);
		1430	cf::cede_to_tick;
		1431	}
		1432
		1433	sub new($) {
		1434	my ($login) = @_;
		1435
		1436	my $self = create;
		1437
		1438	$self->ob->name ($login);
		1439	$self->{deny_save} = 1;
		1440
		1441	$cf::PLAYER{$login} = $self;
		1442
		1443	$self
		1444	}
		1445
		1446	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1447
		1448	=cut
		1449
		1450	sub send_msg {
		1451	my $ns = shift->ns
		1452	or return;
		1453	$ns->send_msg (@_);
		1454	}
		1455
		1456	=item $pl->quit_character
		1457
		1458	Nukes the player without looking back. If logged in, the connection will
		1459	be destroyed. May block for a long time.
		1460
		1461	=cut
		1462
		1463	sub quit_character {
		1464	my ($pl) = @_;
		1465
		1466	my $name = $pl->ob->name;
		1467
		1468	$pl->{deny_save} = 1;
		1469	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1470
		1471	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1472	$pl->deactivate;
		1473	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1474	$pl->ns->destroy if $pl->ns;
		1475
		1476	my $path = playerdir $pl;
		1477	my $temp = "$path~$cf::RUNTIME~deleting~";
		1478	aio_rename $path, $temp;
		1479	delete $cf::PLAYER{$pl->ob->name};
		1480	$pl->destroy;
		1481
		1482	my $prefix = qr<^~\Q$name\E/>;
		1483
		1484	# nuke player maps
		1485	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1486
		1487	IO::AIO::aio_rmtree $temp;
		1488	}
		1489
		1490	=item $pl->kick
		1491
		1492	Kicks a player out of the game. This destroys the connection.
		1493
		1494	=cut
		1495
		1496	sub kick {
		1497	my ($pl, $kicker) = @_;
		1498
		1499	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1500	$pl->killer ("kicked");
		1501	$pl->ns->destroy;
		1502	}
		1503
		1504	=item cf::player::list_logins
		1505
		1506	Returns am arrayref of all valid playernames in the system, can take a
		1507	while and may block, so not sync_job-capable, ever.
		1508
		1509	=cut
		1510
		1511	sub list_logins {
		1512	my $dirs = aio_readdir $PLAYERDIR
		1513	or return [];
		1514
		1515	my @logins;
		1516
		1517	for my $login (@$dirs) {
		1518	my $path = path $login;
		1519
		1520	# a .pst is a dead give-away for a valid player
		1521	unless (-e "$path.pst") {
		1522	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1523	aio_read $fh, 0, 512, my $buf, 0 or next;
		1524	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1525	}
		1526
		1527	utf8::decode $login;
		1528	push @logins, $login;
		1529	}
		1530
		1531	\@logins
		1532	}
		1533
		1534	=item $player->maps
		1535
		1536	Returns an arrayref of map paths that are private for this
		1537	player. May block.
		1538
		1539	=cut
		1540
		1541	sub maps($) {
		1542	my ($pl) = @_;
		1543
		1544	$pl = ref $pl ? $pl->ob->name : $pl;
		1545
		1546	my $files = aio_readdir playerdir $pl
		1547	or return;
		1548
		1549	my @paths;
		1550
		1551	for (@$files) {
		1552	utf8::decode $_;
		1553	next if /\.(?:pl|pst)$/;
		1554	next unless /^$PATH_SEP/o;
		1555
		1556	push @paths, cf::map::normalise "~$pl/$_";
		1557	}
		1558
		1559	\@paths
		1560	}
		1561
		1562	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1563
		1564	Expand crossfire pod fragments into protocol xml.
		1565
		1566	=cut
		1567
		1568	use re 'eval';
		1569
		1570	my $group;
		1571	my $interior; $interior = qr{
		1572	# match a pod interior sequence sans C<< >>
		1573	(?:
		1574	\ (.*?)\ (?{ $group = $^N })
		1575	| < (??{$interior}) >
		1576	)
		1577	}x;
		1578
		1579	sub expand_cfpod {
		1580	my ($self, $pod) = @_;
		1581
		1582	my $xml;
		1583
		1584	while () {
		1585	if ($pod =~ /\G( (?: [^BCGHITU]+ | .(?!<) )+ )/xgcs) {
		1586	$group = $1;
		1587
		1588	$group =~ s/&/&amp;/g;
		1589	$group =~ s/</&lt;/g;
		1590
		1591	$xml .= $group;
		1592	} elsif ($pod =~ m%\G
		1593	([BCGHITU])
		1594	<
		1595	(?:
		1596	([^<>]*) (?{ $group = $^N })
		1597	| < $interior >
		1598	)
		1599	>
		1600	%gcsx
		1601	) {
		1602	my ($code, $data) = ($1, $group);
		1603
		1604	if ($code eq "B") {
		1605	$xml .= "<b>" . expand_cfpod ($self, $data) . "</b>";
		1606	} elsif ($code eq "I") {
		1607	$xml .= "<i>" . expand_cfpod ($self, $data) . "</i>";
		1608	} elsif ($code eq "U") {
		1609	$xml .= "<u>" . expand_cfpod ($self, $data) . "</u>";
		1610	} elsif ($code eq "C") {
		1611	$xml .= "<tt>" . expand_cfpod ($self, $data) . "</tt>";
		1612	} elsif ($code eq "T") {
		1613	$xml .= "<big><b>" . expand_cfpod ($self, $data) . "</b></big>";
		1614	} elsif ($code eq "G") {
		1615	my ($male, $female) = split /\|/, $data;
		1616	$data = $self->gender ? $female : $male;
		1617	$xml .= expand_cfpod ($self, $data);
		1618	} elsif ($code eq "H") {
		1619	$xml .= ("<fg name=\"lightblue\">[" . expand_cfpod ($self, $data) . " (Use hintmode to suppress hints)]</fg>",
		1620	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1621	"")
		1622	[$self->{hintmode}];
		1623	} else {
		1624	$xml .= "error processing '$code($data)' directive";
		1625	}
		1626	} else {
		1627	if ($pod =~ /\G(.+)/) {
		1628	warn "parse error while expanding $pod (at $1)";
		1629	}
		1630	last;
		1631	}
		1632	}
		1633
		1634	for ($xml) {
		1635	# create single paragraphs (very hackish)
		1636	s/(?<=\S)\n(?=\w)/ /g;
		1637
		1638	# compress some whitespace
		1639	s/\s+\n/\n/g; # ws line-ends
		1640	s/\n\n+/\n/g; # double lines
		1641	s/^\n+//; # beginning lines
		1642	s/\n+$//; # ending lines
		1643	}
		1644
		1645	$xml
		1646	}
		1647
		1648	no re 'eval';
		1649
		1650	sub hintmode {
		1651	$_[0]{hintmode} = $_[1] if @_ > 1;
		1652	$_[0]{hintmode}
		1653	}
		1654
		1655	=item $player->ext_reply ($msgid, @msg)
		1656
		1657	Sends an ext reply to the player.
		1658
		1659	=cut
		1660
		1661	sub ext_reply($$@) {
		1662	my ($self, $id, @msg) = @_;
		1663
		1664	$self->ns->ext_reply ($id, @msg)
		1665	}
		1666
		1667	=item $player->ext_msg ($type, @msg)
		1668
		1669	Sends an ext event to the client.
		1670
		1671	=cut
		1672
		1673	sub ext_msg($$@) {
		1674	my ($self, $type, @msg) = @_;
		1675
		1676	$self->ns->ext_msg ($type, @msg);
		1677	}
		1678
		1679	=head3 cf::region
		1680
		1681	=over 4
		1682
		1683	=cut
		1684
		1685	package cf::region;
		1686
		1687	=item cf::region::find_by_path $path
		1688
		1689	Tries to decuce the likely region for a map knowing only its path.
		1690
		1691	=cut
		1692
		1693	sub find_by_path($) {
		1694	my ($path) = @_;
		1695
		1696	my ($match, $specificity);
		1697
		1698	for my $region (list) {
		1699	if ($region->{match} && $path =~ $region->{match}) {
		1700	($match, $specificity) = ($region, $region->specificity)
		1701	if $region->specificity > $specificity;
		1702	}
		1703	}
		1704
		1705	$match
		1706	}
		1707
		1708	=back
		1709
		1710	=head3 cf::map
		1711
		1712	=over 4
		1713
		1714	=cut
		1715
		1716	package cf::map;
		1717
		1718	use Fcntl;
		1719	use Coro::AIO;
		1720
		1721	use overload
		1722	'""' => \&as_string,
		1723	fallback => 1;
		1724
		1725	our $MAX_RESET = 3600;
		1726	our $DEFAULT_RESET = 3000;
		1727
		1728	sub generate_random_map {
		1729	my ($self, $rmp) = @_;
		1730	# mit "rum" bekleckern, nicht
		1731	$self->_create_random_map (
		1732	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1733	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1734	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1735	$rmp->{exit_on_final_map},
		1736	$rmp->{xsize}, $rmp->{ysize},
		1737	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1738	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1739	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1740	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1741	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1742	(cf::region::find $rmp->{region}), $rmp->{custom}
		1743	)
		1744	}
		1745
		1746	=item cf::map->register ($regex, $prio)
		1747
		1748	Register a handler for the map path matching the given regex at the
		1749	givne priority (higher is better, built-in handlers have priority 0, the
		1750	default).
		1751
		1752	=cut
		1753
		1754	sub register {
		1755	my (undef, $regex, $prio) = @_;
		1756	my $pkg = caller;
		1757
		1758	no strict;
		1759	push @{"$pkg\::ISA"}, __PACKAGE__;
		1760
		1761	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1762	}
		1763
		1764	# also paths starting with '/'
		1765	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1766
		1767	sub thawer_merge {
		1768	my ($self, $merge) = @_;
		1769
		1770	# we have to keep some variables in memory intact
		1771	local $self->{path};
		1772	local $self->{load_path};
		1773
		1774	$self->SUPER::thawer_merge ($merge);
		1775	}
		1776
		1777	sub normalise {
		1778	my ($path, $base) = @_;
		1779
		1780	$path = "$path"; # make sure its a string
		1781
		1782	$path =~ s/\.map$//;
		1783
		1784	# map plan:
		1785	#
		1786	# /! non-realised random map exit (special hack!)
		1787	# {... are special paths that are not being touched
		1788	# ?xxx/... are special absolute paths
		1789	# ?random/... random maps
		1790	# /... normal maps
		1791	# ~user/... per-player map of a specific user
		1792
		1793	$path =~ s/$PATH_SEP/\//go;
		1794
		1795	# treat it as relative path if it starts with
		1796	# something that looks reasonable
		1797	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1798	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1799
		1800	$base =~ s{[^/]+/?$}{};
		1801	$path = "$base/$path";
		1802	}
		1803
		1804	for ($path) {
		1805	redo if s{//}{/};
		1806	redo if s{/\.?/}{/};
		1807	redo if s{/[^/]+/\.\./}{/};
		1808	}
		1809
		1810	$path
		1811	}
		1812
		1813	sub new_from_path {
		1814	my (undef, $path, $base) = @_;
		1815
		1816	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1817
		1818	$path = normalise $path, $base;
		1819
		1820	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1821	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1822	my $self = bless cf::map::new, $pkg;
		1823	$self->{path} = $path; $self->path ($path);
		1824	$self->init; # pass $1 etc.
		1825	return $self;
		1826	}
		1827	}
		1828
		1829	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1830	()
		1831	}
		1832
		1833	sub init {
		1834	my ($self) = @_;
		1835
		1836	$self
		1837	}
		1838
		1839	sub as_string {
		1840	my ($self) = @_;
		1841
		1842	"$self->{path}"
		1843	}
		1844
		1845	# the displayed name, this is a one way mapping
		1846	sub visible_name {
		1847	&as_string
		1848	}
		1849
		1850	# the original (read-only) location
		1851	sub load_path {
		1852	my ($self) = @_;
		1853
		1854	"$MAPDIR/$self->{path}.map"
		1855	}
		1856
		1857	# the temporary/swap location
		1858	sub save_path {
		1859	my ($self) = @_;
		1860
		1861	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1862	"$TMPDIR/$path.map"
		1863	}
		1864
		1865	# the unique path, undef == no special unique path
		1866	sub uniq_path {
		1867	my ($self) = @_;
		1868
		1869	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1870	"$UNIQUEDIR/$path"
		1871	}
		1872
		1873	# and all this just because we cannot iterate over
		1874	# all maps in C++...
		1875	sub change_all_map_light {
		1876	my ($change) = @_;
		1877
		1878	$_->change_map_light ($change)
		1879	for grep $_->outdoor, values %cf::MAP;
		1880	}
		1881
		1882	sub decay_objects {
		1883	my ($self) = @_;
		1884
		1885	return if $self->{deny_reset};
		1886
		1887	$self->do_decay_objects;
		1888	}
		1889
		1890	sub unlink_save {
		1891	my ($self) = @_;
		1892
		1893	utf8::encode (my $save = $self->save_path);
		1894	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1895	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1896	}
		1897
		1898	sub load_header_from($) {
		1899	my ($self, $path) = @_;
		1900
		1901	utf8::encode $path;
		1902	my $f = new_from_file cf::object::thawer $path
		1903	or return;
		1904
		1905	$self->_load_header ($f)
		1906	or return;
		1907
		1908	local $MAP_LOADING{$self->{path}} = $self;
		1909	$f->resolve_delayed_derefs;
		1910
		1911	$self->{load_path} = $path;
		1912
		1913	1
		1914	}
		1915
		1916	sub load_header_orig {
		1917	my ($self) = @_;
		1918
		1919	$self->load_header_from ($self->load_path)
		1920	}
		1921
		1922	sub load_header_temp {
		1923	my ($self) = @_;
		1924
		1925	$self->load_header_from ($self->save_path)
		1926	}
		1927
		1928	sub prepare_temp {
		1929	my ($self) = @_;
		1930
		1931	$self->last_access ((delete $self->{last_access})
		1932	|| $cf::RUNTIME); #d#
		1933	# safety
		1934	$self->{instantiate_time} = $cf::RUNTIME
		1935	if $self->{instantiate_time} > $cf::RUNTIME;
		1936	}
		1937
		1938	sub prepare_orig {
		1939	my ($self) = @_;
		1940
		1941	$self->{load_original} = 1;
		1942	$self->{instantiate_time} = $cf::RUNTIME;
		1943	$self->last_access ($cf::RUNTIME);
		1944	$self->instantiate;
		1945	}
		1946
		1947	sub load_header {
		1948	my ($self) = @_;
		1949
		1950	if ($self->load_header_temp) {
		1951	$self->prepare_temp;
		1952	} else {
		1953	$self->load_header_orig
		1954	or return;
		1955	$self->prepare_orig;
		1956	}
		1957
		1958	$self->{deny_reset} = 1
		1959	if $self->no_reset;
		1960
		1961	$self->default_region (cf::region::find_by_path $self->{path})
		1962	unless $self->default_region;
		1963
		1964	1
		1965	}
		1966
		1967	sub find;
		1968	sub find {
		1969	my ($path, $origin) = @_;
		1970
		1971	$path = normalise $path, $origin && $origin->path;
		1972
		1973	cf::lock_wait "map_data:$path";#d#remove
		1974	cf::lock_wait "map_find:$path";
		1975
		1976	$cf::MAP{$path} || do {
		1977	my $guard1 = cf::lock_acquire "map_find:$path";
		1978	my $guard2 = cf::lock_acquire "map_data:$path"; # just for the fun of it
		1979
		1980	my $map = new_from_path cf::map $path
		1981	or return;
		1982
		1983	$map->{last_save} = $cf::RUNTIME;
		1984
		1985	$map->load_header
		1986	or return;
		1987
		1988	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1989	# doing this can freeze the server in a sync job, obviously
		1990	#$cf::WAIT_FOR_TICK->wait;
		1991	undef $guard1;
		1992	undef $guard2;
		1993	$map->reset;
		1994	return find $path;
		1995	}
		1996
		1997	$cf::MAP{$path} = $map
		1998	}
		1999	}
		2000
		2001	sub pre_load { }
		2002	sub post_load { }
		2003
		2004	sub load {
		2005	my ($self) = @_;
		2006
		2007	local $self->{deny_reset} = 1; # loading can take a long time
		2008
		2009	my $path = $self->{path};
		2010
		2011	{
		2012	my $guard = cf::lock_acquire "map_data:$path";
		2013
		2014	return unless $self->valid;
		2015	return unless $self->in_memory == cf::MAP_SWAPPED;
		2016
		2017	$self->in_memory (cf::MAP_LOADING);
		2018
		2019	$self->alloc;
		2020
		2021	$self->pre_load;
		2022	cf::cede_to_tick;
		2023
		2024	my $f = new_from_file cf::object::thawer $self->{load_path};
		2025	$f->skip_block;
		2026	$self->_load_objects ($f)
		2027	or return;
		2028
		2029	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		2030	if delete $self->{load_original};
		2031
		2032	if (my $uniq = $self->uniq_path) {
		2033	utf8::encode $uniq;
		2034	unless (aio_stat $uniq) {
		2035	if (my $f = new_from_file cf::object::thawer $uniq) {
		2036	$self->clear_unique_items;
		2037	$self->_load_objects ($f);
		2038	$f->resolve_delayed_derefs;
636	}	2039	}
637	}	2040	}
638	} else {
639	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
640	}	2041	}
641		2042
642	cf::override;	2043	$f->resolve_delayed_derefs;
		2044
		2045	cf::cede_to_tick;
		2046	# now do the right thing for maps
		2047	$self->link_multipart_objects;
		2048	$self->difficulty ($self->estimate_difficulty)
		2049	unless $self->difficulty;
		2050	cf::cede_to_tick;
		2051
		2052	unless ($self->{deny_activate}) {
		2053	$self->decay_objects;
		2054	$self->fix_auto_apply;
		2055	$self->update_buttons;
		2056	cf::cede_to_tick;
		2057	$self->set_darkness_map;
		2058	cf::cede_to_tick;
		2059	$self->activate;
		2060	}
		2061
		2062	$self->{last_save} = $cf::RUNTIME;
		2063	$self->last_access ($cf::RUNTIME);
		2064
		2065	$self->in_memory (cf::MAP_IN_MEMORY);
643	},	2066	}
644	;
645		2067
646	sub register {	2068	$self->post_load;
		2069	}
		2070
		2071	sub customise_for {
647	my ($base, $pkg) = @_;	2072	my ($self, $ob) = @_;
648		2073
649	#TODO	2074	return find "~" . $ob->name . "/" . $self->{path}
650	}	2075	if $self->per_player;
651		2076
652	sub load_extension {	2077	# return find "?party/" . $ob->name . "/" . $self->{path}
653	my ($path) = @_;	2078	# if $self->per_party;
654		2079
655	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	2080	$self
656	my $base = $1;
657	my $pkg = $1;
658	$pkg =~ s/[^[:word:]]/_/g;
659	$pkg = "ext::$pkg";
660
661	warn "loading '$path' into '$pkg'\n";
662
663	open my $fh, "<:utf8", $path
664	or die "$path: $!";
665
666	my $source =
667	"package $pkg; use strict; use utf8;\n"
668	. "#line 1 \"$path\"\n{\n"
669	. (do { local $/; <$fh> })
670	. "\n};\n1";
671
672	eval $source
673	or die $@ ? "$path: $@\n"
674	: "extension disabled.\n";
675
676	push @exts, $pkg;
677	$ext_pkg{$base} = $pkg;
678
679	# no strict 'refs';
680	# @{"$pkg\::ISA"} = ext::;
681
682	register $base, $pkg;
683	}	2081	}
684		2082
685	sub unload_extension {	2083	# find and load all maps in the 3x3 area around a map
686	my ($pkg) = @_;	2084	sub load_neighbours {
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	# }
695
696	# remove commands
697	for my $name (keys %COMMAND) {
698	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
699
700	if (@cb) {
701	$COMMAND{$name} = \@cb;
702	} else {
703	delete $COMMAND{$name};
704	}
705	}
706
707	# remove extcmds
708	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
709	delete $EXTCMD{$name};
710	}
711
712	if (my $cb = $pkg->can ("unload")) {
713	eval {
714	$cb->($pkg);
715	1
716	} or warn "$pkg unloaded, but with errors: $@";
717	}
718
719	Symbol::delete_package $pkg;
720	}
721
722	sub load_extensions {
723	my $LIBDIR = maps_directory "perl";
724
725	for my $ext (<$LIBDIR/*.ext>) {
726	next unless -r $ext;
727	eval {
728	load_extension $ext;
729	1
730	} or warn "$ext not loaded: $@";
731	}
732	}
733
734	#############################################################################
735	# load/save/clean perl data associated with a map
736
737	*cf::mapsupport::on_clean = sub {
738	my ($map) = @_;	2085	my ($map) = @_;
739		2086
740	my $path = $map->tmpname;	2087	my @neigh; # diagonal neighbours
741	defined $path or return;
742		2088
743	unlink "$path.pst";	2089	for (0 .. 3) {
744	};	2090	my $neigh = $map->tile_path ($_)
		2091	or next;
		2092	$neigh = find $neigh, $map
		2093	or next;
		2094	$neigh->load;
745		2095
746	attach_to_maps prio => -10000, package => cf::mapsupport::;	2096	push @neigh,
		2097	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2098	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2099	}
747		2100
748	#############################################################################	2101	for (grep defined $_->[0], @neigh) {
749	# load/save perl data associated with player->ob objects	2102	my ($path, $origin) = @$_;
750		2103	my $neigh = find $path, $origin
751	sub all_objects(@) {	2104	or next;
752	@_, map all_objects ($_->inv), @_	2105	$neigh->load;
		2106	}
753	}	2107	}
754		2108
755	# TODO: compatibility cruft, remove when no longer needed	2109	sub find_sync {
756	attach_to_players	2110	my ($path, $origin) = @_;
757	on_load => sub {
758	my ($pl, $path) = @_;
759		2111
760	for my $o (all_objects $pl->ob) {	2112	cf::sync_job { find $path, $origin }
761	if (my $value = $o->get_ob_key_value ("_perl_data")) {	2113	}
762	$o->set_ob_key_value ("_perl_data");
763		2114
764	%$o = %{ Storable::thaw pack "H*", $value };	2115	sub do_load_sync {
		2116	my ($map) = @_;
		2117
		2118	cf::LOG cf::llevDebug | cf::logBacktrace, "do_load_sync"
		2119	if $Coro::current == $Coro::main;
		2120
		2121	cf::sync_job { $map->load };
		2122	}
		2123
		2124	our %MAP_PREFETCH;
		2125	our $MAP_PREFETCHER = undef;
		2126
		2127	sub find_async {
		2128	my ($path, $origin, $load) = @_;
		2129
		2130	$path = normalise $path, $origin && $origin->{path};
		2131
		2132	if (my $map = $cf::MAP{$path}) {
		2133	return $map if !$load || $map->in_memory == cf::MAP_IN_MEMORY;
		2134	}
		2135
		2136	$MAP_PREFETCH{$path} |= $load;
		2137
		2138	$MAP_PREFETCHER ||= cf::async {
		2139	$Coro::current->{desc} = "map prefetcher";
		2140
		2141	while (%MAP_PREFETCH) {
		2142	while (my ($k, $v) = each %MAP_PREFETCH) {
		2143	if (my $map = find $k) {
		2144	$map->load if $v;
		2145	}
		2146
		2147	delete $MAP_PREFETCH{$k};
765	}	2148	}
766	}	2149	}
		2150	undef $MAP_PREFETCHER;
		2151	};
		2152	$MAP_PREFETCHER->prio (6);
		2153
		2154	()
		2155	}
		2156
		2157	sub save {
		2158	my ($self) = @_;
		2159
		2160	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2161
		2162	$self->{last_save} = $cf::RUNTIME;
		2163
		2164	return unless $self->dirty;
		2165
		2166	my $save = $self->save_path; utf8::encode $save;
		2167	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2168
		2169	$self->{load_path} = $save;
		2170
		2171	return if $self->{deny_save};
		2172
		2173	local $self->{last_access} = $self->last_access;#d#
		2174
		2175	cf::async {
		2176	$Coro::current->{desc} = "map player save";
		2177	$_->contr->save for $self->players;
		2178	};
		2179
		2180	if ($uniq) {
		2181	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2182	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2183	} else {
		2184	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
767	},	2185	}
768	;	2186	}
769		2187
770	#############################################################################	2188	sub swap_out {
		2189	my ($self) = @_;
771		2190
772	=head2 CORE EXTENSIONS	2191	# save first because save cedes
		2192	$self->save;
773		2193
774	Functions and methods that extend core crossfire objects.	2194	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2195
		2196	return if $self->players;
		2197	return if $self->in_memory != cf::MAP_IN_MEMORY;
		2198	return if $self->{deny_save};
		2199
		2200	$self->in_memory (cf::MAP_SWAPPED);
		2201
		2202	$self->deactivate;
		2203	$_->clear_links_to ($self) for values %cf::MAP;
		2204	$self->clear;
		2205	}
		2206
		2207	sub reset_at {
		2208	my ($self) = @_;
		2209
		2210	# TODO: safety, remove and allow resettable per-player maps
		2211	return 1e99 if $self->{deny_reset};
		2212
		2213	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2214	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2215
		2216	$time + $to
		2217	}
		2218
		2219	sub should_reset {
		2220	my ($self) = @_;
		2221
		2222	$self->reset_at <= $cf::RUNTIME
		2223	}
		2224
		2225	sub reset {
		2226	my ($self) = @_;
		2227
		2228	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2229
		2230	return if $self->players;
		2231
		2232	warn "resetting map ", $self->path;
		2233
		2234	$self->in_memory (cf::MAP_SWAPPED);
		2235
		2236	# need to save uniques path
		2237	unless ($self->{deny_save}) {
		2238	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2239
		2240	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2241	if $uniq;
		2242	}
		2243
		2244	delete $cf::MAP{$self->path};
		2245
		2246	$self->deactivate;
		2247	$_->clear_links_to ($self) for values %cf::MAP;
		2248	$self->clear;
		2249
		2250	$self->unlink_save;
		2251	$self->destroy;
		2252	}
		2253
		2254	my $nuke_counter = "aaaa";
		2255
		2256	sub nuke {
		2257	my ($self) = @_;
		2258
		2259	{
		2260	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2261
		2262	delete $cf::MAP{$self->path};
		2263
		2264	$self->unlink_save;
		2265
		2266	bless $self, "cf::map";
		2267	delete $self->{deny_reset};
		2268	$self->{deny_save} = 1;
		2269	$self->reset_timeout (1);
		2270	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2271
		2272	$cf::MAP{$self->path} = $self;
		2273	}
		2274
		2275	$self->reset; # polite request, might not happen
		2276	}
		2277
		2278	=item $maps = cf::map::tmp_maps
		2279
		2280	Returns an arrayref with all map paths of currently instantiated and saved
		2281	maps. May block.
		2282
		2283	=cut
		2284
		2285	sub tmp_maps() {
		2286	[
		2287	map {
		2288	utf8::decode $_;
		2289	/\.map$/
		2290	? normalise $_
		2291	: ()
		2292	} @{ aio_readdir $TMPDIR or [] }
		2293	]
		2294	}
		2295
		2296	=item $maps = cf::map::random_maps
		2297
		2298	Returns an arrayref with all map paths of currently instantiated and saved
		2299	random maps. May block.
		2300
		2301	=cut
		2302
		2303	sub random_maps() {
		2304	[
		2305	map {
		2306	utf8::decode $_;
		2307	/\.map$/
		2308	? normalise "?random/$_"
		2309	: ()
		2310	} @{ aio_readdir $RANDOMDIR or [] }
		2311	]
		2312	}
		2313
		2314	=item cf::map::unique_maps
		2315
		2316	Returns an arrayref of paths of all shared maps that have
		2317	instantiated unique items. May block.
		2318
		2319	=cut
		2320
		2321	sub unique_maps() {
		2322	[
		2323	map {
		2324	utf8::decode $_;
		2325	/\.map$/
		2326	? normalise $_
		2327	: ()
		2328	} @{ aio_readdir $UNIQUEDIR or [] }
		2329	]
		2330	}
		2331
		2332	package cf;
		2333
		2334	=back
		2335
		2336	=head3 cf::object
		2337
		2338	=cut
		2339
		2340	package cf::object;
775		2341
776	=over 4	2342	=over 4
777		2343
778	=item cf::player::exists $login	2344	=item $ob->inv_recursive
779		2345
780	Returns true when the given account exists.	2346	Returns the inventory of the object _and_ their inventories, recursively.
781		2347
782	=cut	2348	=cut
783		2349
784	sub cf::player::exists($) {	2350	sub inv_recursive_;
785	cf::player::find $_[0]	2351	sub inv_recursive_ {
786	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2352	map { $_, inv_recursive_ $_->inv } @_
787	}	2353	}
		2354
		2355	sub inv_recursive {
		2356	inv_recursive_ inv $_[0]
		2357	}
		2358
		2359	=item $ref = $ob->ref
		2360
		2361	creates and returns a persistent reference to an objetc that can be stored as a string.
		2362
		2363	=item $ob = cf::object::deref ($refstring)
		2364
		2365	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2366	even if the object actually exists. May block.
		2367
		2368	=cut
		2369
		2370	sub deref {
		2371	my ($ref) = @_;
		2372
		2373	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2374	my ($uuid, $name) = ($1, $2);
		2375	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2376	or return;
		2377	$pl->ob->uuid eq $uuid
		2378	or return;
		2379
		2380	$pl->ob
		2381	} else {
		2382	warn "$ref: cannot resolve object reference\n";
		2383	undef
		2384	}
		2385	}
		2386
		2387	package cf;
		2388
		2389	=back
		2390
		2391	=head3 cf::object::player
		2392
		2393	=over 4
788		2394
789	=item $player_object->reply ($npc, $msg[, $flags])	2395	=item $player_object->reply ($npc, $msg[, $flags])
790		2396
791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2397	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
792	can be C<undef>. Does the right thing when the player is currently in a	2398	can be C<undef>. Does the right thing when the player is currently in a
…		…
794		2400
795	=cut	2401	=cut
796		2402
797	# rough implementation of a future "reply" method that works	2403	# rough implementation of a future "reply" method that works
798	# with dialog boxes.	2404	# with dialog boxes.
		2405	#TODO: the first argument must go, split into a $npc->reply_to ( method
799	sub cf::object::player::reply($$$;$) {	2406	sub cf::object::player::reply($$$;$) {
800	my ($self, $npc, $msg, $flags) = @_;	2407	my ($self, $npc, $msg, $flags) = @_;
801		2408
802	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2409	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
803		2410
804	if ($self->{record_replies}) {	2411	if ($self->{record_replies}) {
805	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2412	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2413
806	} else {	2414	} else {
		2415	my $pl = $self->contr;
		2416
		2417	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2418	my $dialog = $pl->{npc_dialog};
		2419	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2420
		2421	} else {
807	$msg = $npc->name . " says: $msg" if $npc;	2422	$msg = $npc->name . " says: $msg" if $npc;
808	$self->message ($msg, $flags);	2423	$self->message ($msg, $flags);
		2424	}
809	}	2425	}
810	}	2426	}
811		2427
812	=item $player->ext_reply ($msgid, $msgtype, %msg)	2428	=item $object->send_msg ($channel, $msg, $color, [extra...])
813		2429
814	Sends an ext reply to the player.
815
816	=cut	2430	=cut
817		2431
818	sub cf::player::ext_reply($$$%) {	2432	sub cf::object::send_msg {
819	my ($self, $id, %msg) = @_;	2433	my $pl = shift->contr
820		2434	or return;
821	$msg{msgid} = $id;	2435	$pl->send_msg (@_);
822
823	$self->send ("ext " . to_json \%msg);
824	}	2436	}
825		2437
826	=item $player_object->may ("access")	2438	=item $player_object->may ("access")
827		2439
828	Returns wether the given player is authorized to access resource "access"	2440	Returns wether the given player is authorized to access resource "access"
…		…
837	(ref $cf::CFG{"may_$access"}	2449	(ref $cf::CFG{"may_$access"}
838	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2450	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
839	: $cf::CFG{"may_$access"})	2451	: $cf::CFG{"may_$access"})
840	}	2452	}
841		2453
842	=cut	2454	=item $player_object->enter_link
843		2455
844	#############################################################################	2456	Freezes the player and moves him/her to a special map (C<{link}>).
		2457
		2458	The player should be reasonably safe there for short amounts of time. You
		2459	I<MUST> call C<leave_link> as soon as possible, though.
		2460
		2461	Will never block.
		2462
		2463	=item $player_object->leave_link ($map, $x, $y)
		2464
		2465	Moves the player out of the special C<{link}> map onto the specified
		2466	map. If the map is not valid (or omitted), the player will be moved back
		2467	to the location he/she was before the call to C<enter_link>, or, if that
		2468	fails, to the emergency map position.
		2469
		2470	Might block.
		2471
		2472	=cut
		2473
		2474	sub link_map {
		2475	unless ($LINK_MAP) {
		2476	$LINK_MAP = cf::map::find "{link}"
		2477	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2478	$LINK_MAP->load;
		2479	}
		2480
		2481	$LINK_MAP
		2482	}
		2483
		2484	sub cf::object::player::enter_link {
		2485	my ($self) = @_;
		2486
		2487	$self->deactivate_recursive;
		2488
		2489	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2490
		2491	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2492	if $self->map && $self->map->{path} ne "{link}";
		2493
		2494	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2495	}
		2496
		2497	sub cf::object::player::leave_link {
		2498	my ($self, $map, $x, $y) = @_;
		2499
		2500	return unless $self->contr->active;
		2501
		2502	my $link_pos = delete $self->{_link_pos};
		2503
		2504	unless ($map) {
		2505	# restore original map position
		2506	($map, $x, $y) = @{ $link_pos || [] };
		2507	$map = cf::map::find $map;
		2508
		2509	unless ($map) {
		2510	($map, $x, $y) = @$EMERGENCY_POSITION;
		2511	$map = cf::map::find $map
		2512	or die "FATAL: cannot load emergency map\n";
		2513	}
		2514	}
		2515
		2516	($x, $y) = (-1, -1)
		2517	unless (defined $x) && (defined $y);
		2518
		2519	# use -1 or undef as default coordinates, not 0, 0
		2520	($x, $y) = ($map->enter_x, $map->enter_y)
		2521	if $x <=0 && $y <= 0;
		2522
		2523	$map->load;
		2524	$map->load_neighbours;
		2525
		2526	return unless $self->contr->active;
		2527	$self->activate_recursive;
		2528
		2529	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2530	$self->enter_map ($map, $x, $y);
		2531	}
		2532
		2533	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2534
		2535	Moves the player to the given map-path and coordinates by first freezing
		2536	her, loading and preparing them map, calling the provided $check callback
		2537	that has to return the map if sucecssful, and then unfreezes the player on
		2538	the new (success) or old (failed) map position. In either case, $done will
		2539	be called at the end of this process.
		2540
		2541	=cut
		2542
		2543	our $GOTOGEN;
		2544
		2545	sub cf::object::player::goto {
		2546	my ($self, $path, $x, $y, $check, $done) = @_;
		2547
		2548	# do generation counting so two concurrent goto's will be executed in-order
		2549	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2550
		2551	$self->enter_link;
		2552
		2553	(async {
		2554	$Coro::current->{desc} = "player::goto $path $x $y";
		2555
		2556	# *tag paths override both path and x|y
		2557	if ($path =~ /^\*(.*)$/) {
		2558	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2559	my $ob = $obs[rand @obs];
		2560
		2561	# see if we actually can go there
		2562	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2563	$ob = $obs[rand @obs];
		2564	} else {
		2565	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2566	}
		2567	# else put us there anyways for now #d#
		2568
		2569	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2570	} else {
		2571	($path, $x, $y) = (undef, undef, undef);
		2572	}
		2573	}
		2574
		2575	my $map = eval {
		2576	my $map = defined $path ? cf::map::find $path : undef;
		2577
		2578	if ($map) {
		2579	$map = $map->customise_for ($self);
		2580	$map = $check->($map) if $check && $map;
		2581	} else {
		2582	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2583	}
		2584
		2585	$map
		2586	};
		2587
		2588	if ($@) {
		2589	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2590	LOG llevError | logBacktrace, Carp::longmess $@;
		2591	}
		2592
		2593	if ($gen == $self->{_goto_generation}) {
		2594	delete $self->{_goto_generation};
		2595	$self->leave_link ($map, $x, $y);
		2596	}
		2597
		2598	$done->() if $done;
		2599	})->prio (1);
		2600	}
		2601
		2602	=item $player_object->enter_exit ($exit_object)
		2603
		2604	=cut
		2605
		2606	sub parse_random_map_params {
		2607	my ($spec) = @_;
		2608
		2609	my $rmp = { # defaults
		2610	xsize => (cf::rndm 15, 40),
		2611	ysize => (cf::rndm 15, 40),
		2612	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2613	#layout => string,
		2614	};
		2615
		2616	for (split /\n/, $spec) {
		2617	my ($k, $v) = split /\s+/, $_, 2;
		2618
		2619	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2620	}
		2621
		2622	$rmp
		2623	}
		2624
		2625	sub prepare_random_map {
		2626	my ($exit) = @_;
		2627
		2628	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2629
		2630	# all this does is basically replace the /! path by
		2631	# a new random map path (?random/...) with a seed
		2632	# that depends on the exit object
		2633
		2634	my $rmp = parse_random_map_params $exit->msg;
		2635
		2636	if ($exit->map) {
		2637	$rmp->{region} = $exit->region->name;
		2638	$rmp->{origin_map} = $exit->map->path;
		2639	$rmp->{origin_x} = $exit->x;
		2640	$rmp->{origin_y} = $exit->y;
		2641	}
		2642
		2643	$rmp->{random_seed} ||= $exit->random_seed;
		2644
		2645	my $data = cf::encode_json $rmp;
		2646	my $md5 = Digest::MD5::md5_hex $data;
		2647	my $meta = "$RANDOMDIR/$md5.meta";
		2648
		2649	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2650	aio_write $fh, 0, (length $data), $data, 0;
		2651	undef $fh;
		2652	aio_rename "$meta~", $meta;
		2653
		2654	$exit->slaying ("?random/$md5");
		2655	$exit->msg (undef);
		2656	}
		2657	}
		2658
		2659	sub cf::object::player::enter_exit {
		2660	my ($self, $exit) = @_;
		2661
		2662	return unless $self->type == cf::PLAYER;
		2663
		2664	if ($exit->slaying eq "/!") {
		2665	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2666	# the problem is that $exit might not survive long enough
		2667	# so it needs to be done right now, right here
		2668	cf::sync_job { prepare_random_map $exit };
		2669	}
		2670
		2671	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2672	my $hp = $exit->stats->hp;
		2673	my $sp = $exit->stats->sp;
		2674
		2675	$self->enter_link;
		2676
		2677	# if exit is damned, update players death & WoR home-position
		2678	$self->contr->savebed ($slaying, $hp, $sp)
		2679	if $exit->flag (FLAG_DAMNED);
		2680
		2681	(async {
		2682	$Coro::current->{desc} = "enter_exit $slaying $hp $sp";
		2683
		2684	$self->deactivate_recursive; # just to be sure
		2685	unless (eval {
		2686	$self->goto ($slaying, $hp, $sp);
		2687
		2688	1;
		2689	}) {
		2690	$self->message ("Something went wrong deep within the crossfire server. "
		2691	. "I'll try to bring you back to the map you were before. "
		2692	. "Please report this to the dungeon master!",
		2693	cf::NDI_UNIQUE | cf::NDI_RED);
		2694
		2695	warn "ERROR in enter_exit: $@";
		2696	$self->leave_link;
		2697	}
		2698	})->prio (1);
		2699	}
		2700
		2701	=head3 cf::client
		2702
		2703	=over 4
		2704
		2705	=item $client->send_drawinfo ($text, $flags)
		2706
		2707	Sends a drawinfo packet to the client. Circumvents output buffering so
		2708	should not be used under normal circumstances.
		2709
		2710	=cut
		2711
		2712	sub cf::client::send_drawinfo {
		2713	my ($self, $text, $flags) = @_;
		2714
		2715	utf8::encode $text;
		2716	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2717	}
		2718
		2719	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2720
		2721	Send a drawinfo or msg packet to the client, formatting the msg for the
		2722	client if neccessary. C<$type> should be a string identifying the type of
		2723	the message, with C<log> being the default. If C<$color> is negative, suppress
		2724	the message unless the client supports the msg packet.
		2725
		2726	=cut
		2727
		2728	# non-persistent channels (usually the info channel)
		2729	our %CHANNEL = (
		2730	"c/identify" => {
		2731	id => "infobox",
		2732	title => "Identify",
		2733	reply => undef,
		2734	tooltip => "Items recently identified",
		2735	},
		2736	"c/examine" => {
		2737	id => "infobox",
		2738	title => "Examine",
		2739	reply => undef,
		2740	tooltip => "Signs and other items you examined",
		2741	},
		2742	"c/book" => {
		2743	id => "infobox",
		2744	title => "Book",
		2745	reply => undef,
		2746	tooltip => "The contents of a note or book",
		2747	},
		2748	"c/lookat" => {
		2749	id => "infobox",
		2750	title => "Look",
		2751	reply => undef,
		2752	tooltip => "What you saw there",
		2753	},
		2754	"c/who" => {
		2755	id => "infobox",
		2756	title => "Players",
		2757	reply => undef,
		2758	tooltip => "Shows players who are currently online",
		2759	},
		2760	"c/body" => {
		2761	id => "infobox",
		2762	title => "Body Parts",
		2763	reply => undef,
		2764	tooltip => "Shows which body parts you posess and are available",
		2765	},
		2766	"c/uptime" => {
		2767	id => "infobox",
		2768	title => "Uptime",
		2769	reply => undef,
		2770	tooltip => "How long the server has been running since last restart",
		2771	},
		2772	"c/mapinfo" => {
		2773	id => "infobox",
		2774	title => "Map Info",
		2775	reply => undef,
		2776	tooltip => "Information related to the maps",
		2777	},
		2778	);
		2779
		2780	sub cf::client::send_msg {
		2781	my ($self, $channel, $msg, $color, @extra) = @_;
		2782
		2783	$msg = $self->pl->expand_cfpod ($msg);
		2784
		2785	$color &= cf::NDI_CLIENT_MASK; # just in case...
		2786
		2787	# check predefined channels, for the benefit of C
		2788	if ($CHANNEL{$channel}) {
		2789	$channel = $CHANNEL{$channel};
		2790
		2791	$self->ext_msg (channel_info => $channel)
		2792	if $self->can_msg;
		2793
		2794	$channel = $channel->{id};
		2795
		2796	} elsif (ref $channel) {
		2797	# send meta info to client, if not yet sent
		2798	unless (exists $self->{channel}{$channel->{id}}) {
		2799	$self->{channel}{$channel->{id}} = $channel;
		2800	$self->ext_msg (channel_info => $channel)
		2801	if $self->can_msg;
		2802	}
		2803
		2804	$channel = $channel->{id};
		2805	}
		2806
		2807	return unless @extra || length $msg;
		2808
		2809	if ($self->can_msg) {
		2810	# default colour, mask it out
		2811	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		2812	if $color & cf::NDI_DEF;
		2813
		2814	$self->send_packet ("msg " . $self->{json_coder}->encode (
		2815	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]));
		2816	} else {
		2817	if ($color >= 0) {
		2818	# replace some tags by gcfclient-compatible ones
		2819	for ($msg) {
		2820	1 while
		2821	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2822	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2823	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2824	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2825	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2826	}
		2827
		2828	$color &= cf::NDI_COLOR_MASK;
		2829
		2830	utf8::encode $msg;
		2831
		2832	if (0 && $msg =~ /\[/) {
		2833	# COMMAND/INFO
		2834	$self->send_packet ("drawextinfo $color 10 8 $msg")
		2835	} else {
		2836	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2837	$self->send_packet ("drawinfo $color $msg")
		2838	}
		2839	}
		2840	}
		2841	}
		2842
		2843	=item $client->ext_msg ($type, @msg)
		2844
		2845	Sends an ext event to the client.
		2846
		2847	=cut
		2848
		2849	sub cf::client::ext_msg($$@) {
		2850	my ($self, $type, @msg) = @_;
		2851
		2852	if ($self->extcmd == 2) {
		2853	$self->send_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		2854	} elsif ($self->extcmd == 1) { # TODO: remove
		2855	push @msg, msgtype => "event_$type";
		2856	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2857	}
		2858	}
		2859
		2860	=item $client->ext_reply ($msgid, @msg)
		2861
		2862	Sends an ext reply to the client.
		2863
		2864	=cut
		2865
		2866	sub cf::client::ext_reply($$@) {
		2867	my ($self, $id, @msg) = @_;
		2868
		2869	if ($self->extcmd == 2) {
		2870	$self->send_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
		2871	} elsif ($self->extcmd == 1) {
		2872	#TODO: version 1, remove
		2873	unshift @msg, msgtype => "reply", msgid => $id;
		2874	$self->send_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		2875	}
		2876	}
		2877
		2878	=item $success = $client->query ($flags, "text", \&cb)
		2879
		2880	Queues a query to the client, calling the given callback with
		2881	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2882	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2883
		2884	Queries can fail, so check the return code. Or don't, as queries will
		2885	become reliable at some point in the future.
		2886
		2887	=cut
		2888
		2889	sub cf::client::query {
		2890	my ($self, $flags, $text, $cb) = @_;
		2891
		2892	return unless $self->state == ST_PLAYING
		2893	|| $self->state == ST_SETUP
		2894	|| $self->state == ST_CUSTOM;
		2895
		2896	$self->state (ST_CUSTOM);
		2897
		2898	utf8::encode $text;
		2899	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2900
		2901	$self->send_packet ($self->{query_queue}[0][0])
		2902	if @{ $self->{query_queue} } == 1;
		2903
		2904	1
		2905	}
		2906
		2907	cf::client->attach (
		2908	on_connect => sub {
		2909	my ($ns) = @_;
		2910
		2911	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2912	},
		2913	on_reply => sub {
		2914	my ($ns, $msg) = @_;
		2915
		2916	# this weird shuffling is so that direct followup queries
		2917	# get handled first
		2918	my $queue = delete $ns->{query_queue}
		2919	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2920
		2921	(shift @$queue)->[1]->($msg);
		2922	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2923
		2924	push @{ $ns->{query_queue} }, @$queue;
		2925
		2926	if (@{ $ns->{query_queue} } == @$queue) {
		2927	if (@$queue) {
		2928	$ns->send_packet ($ns->{query_queue}[0][0]);
		2929	} else {
		2930	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2931	}
		2932	}
		2933	},
		2934	on_exticmd => sub {
		2935	my ($ns, $buf) = @_;
		2936
		2937	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2938
		2939	if (ref $msg) {
		2940	my ($type, $reply, @payload) =
		2941	"ARRAY" eq ref $msg
		2942	? @$msg
		2943	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		2944
		2945	my @reply;
		2946
		2947	if (my $cb = $EXTICMD{$type}) {
		2948	@reply = $cb->($ns, @payload);
		2949	}
		2950
		2951	$ns->ext_reply ($reply, @reply)
		2952	if $reply;
		2953
		2954	} else {
		2955	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2956	}
		2957
		2958	cf::override;
		2959	},
		2960	);
		2961
		2962	=item $client->async (\&cb)
		2963
		2964	Create a new coroutine, running the specified callback. The coroutine will
		2965	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2966	or loss of connection).
		2967
		2968	=cut
		2969
		2970	sub cf::client::async {
		2971	my ($self, $cb) = @_;
		2972
		2973	my $coro = &Coro::async ($cb);
		2974
		2975	$coro->on_destroy (sub {
		2976	delete $self->{_coro}{$coro+0};
		2977	});
		2978
		2979	$self->{_coro}{$coro+0} = $coro;
		2980
		2981	$coro
		2982	}
		2983
		2984	cf::client->attach (
		2985	on_destroy => sub {
		2986	my ($ns) = @_;
		2987
		2988	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2989	},
		2990	);
		2991
		2992	=back
		2993
845		2994
846	=head2 SAFE SCRIPTING	2995	=head2 SAFE SCRIPTING
847		2996
848	Functions that provide a safe environment to compile and execute	2997	Functions that provide a safe environment to compile and execute
849	snippets of perl code without them endangering the safety of the server	2998	snippets of perl code without them endangering the safety of the server
…		…
856	our $safe = new Safe "safe";	3005	our $safe = new Safe "safe";
857	our $safe_hole = new Safe::Hole;	3006	our $safe_hole = new Safe::Hole;
858		3007
859	$SIG{FPE} = 'IGNORE';	3008	$SIG{FPE} = 'IGNORE';
860		3009
861	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3010	$safe->permit_only (Opcode::opset qw(
		3011	:base_core :base_mem :base_orig :base_math
		3012	grepstart grepwhile mapstart mapwhile
		3013	sort time
		3014	));
862		3015
863	# here we export the classes and methods available to script code	3016	# here we export the classes and methods available to script code
864		3017
865	=pod	3018	=pod
866		3019
867	The following fucntions and emthods are available within a safe environment:	3020	The following functions and methods are available within a safe environment:
868		3021
869	cf::object contr pay_amount pay_player	3022	cf::object
		3023	contr pay_amount pay_player map x y force_find force_add destroy
		3024	insert remove name archname title slaying race decrease_ob_nr
		3025
870	cf::object::player player	3026	cf::object::player
871	cf::player peaceful	3027	player
		3028
		3029	cf::player
		3030	peaceful
		3031
		3032	cf::map
		3033	trigger
872		3034
873	=cut	3035	=cut
874		3036
875	for (	3037	for (
876	["cf::object" => qw(contr pay_amount pay_player)],	3038	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3039	insert remove inv name archname title slaying race
		3040	decrease_ob_nr destroy)],
877	["cf::object::player" => qw(player)],	3041	["cf::object::player" => qw(player)],
878	["cf::player" => qw(peaceful)],	3042	["cf::player" => qw(peaceful)],
		3043	["cf::map" => qw(trigger)],
879	) {	3044	) {
880	no strict 'refs';	3045	no strict 'refs';
881	my ($pkg, @funs) = @$_;	3046	my ($pkg, @funs) = @$_;
882	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3047	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
883	for @funs;	3048	for @funs;
…		…
951	=back	3116	=back
952		3117
953	=cut	3118	=cut
954		3119
955	#############################################################################	3120	#############################################################################
		3121	# the server's init and main functions
956		3122
957	=head2 EXTENSION DATABASE SUPPORT	3123	sub load_facedata($) {
		3124	my ($path) = @_;
958		3125
959	Crossfire maintains a very simple database for extension use. It can	3126	# HACK to clear player env face cache, we need some signal framework
960	currently store anything that can be serialised using Storable, which	3127	# for this (global event?)
961	excludes objects.	3128	%ext::player_env::MUSIC_FACE_CACHE = ();
962		3129
963	The parameter C<$family> should best start with the name of the extension	3130	my $enc = JSON::XS->new->utf8->canonical->relaxed;
964	using it, it should be unique.
965		3131
966	=over 4	3132	warn "loading facedata from $path\n";
967		3133
968	=item $hashref = cf::db_get $family	3134	my $facedata;
		3135	0 < aio_load $path, $facedata
		3136	or die "$path: $!";
969		3137
970	Return a hashref for use by the extension C<$family>, which can be	3138	$facedata = Coro::Storable::thaw $facedata;
971	modified. After modifications, you have to call C<cf::db_dirty> or
972	C<cf::db_sync>.
973		3139
974	=item $value = cf::db_get $family => $key	3140	$facedata->{version} == 2
		3141	or cf::cleanup "$path: version mismatch, cannot proceed.";
975		3142
976	Returns a single value from the database	3143	# patch in the exptable
977		3144	$facedata->{resource}{"res/exp_table"} = {
978	=item cf::db_put $family => $hashref	3145	type => FT_RSRC,
979		3146	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	});	3147	};
		3148	cf::cede_to_tick;
1031		3149
1032	sub db_dirty() {
1033	$dirty = 1;
1034	$idle->start;
1035	}	3150	{
		3151	my $faces = $facedata->{faceinfo};
1036		3152
1037	sub db_get($;$) {	3153	while (my ($face, $info) = each %$faces) {
1038	@_ >= 2	3154	my $idx = (cf::face::find $face) || cf::face::alloc $face;
1039	? $DB->{$_[0]}{$_[1]}
1040	: ($DB->{$_[0]} ||= { })
1041	}
1042		3155
1043	sub db_put($$;$) {	3156	cf::face::set_visibility $idx, $info->{visibility};
1044	if (@_ >= 3) {	3157	cf::face::set_magicmap $idx, $info->{magicmap};
1045	$DB->{$_[0]}{$_[1]} = $_[2];	3158	cf::face::set_data $idx, 0, $info->{data32}, Digest::MD5::md5 $info->{data32};
1046	} else {	3159	cf::face::set_data $idx, 1, $info->{data64}, Digest::MD5::md5 $info->{data64};
1047	$DB->{$_[0]} = $_[1];
1048	}
1049	db_dirty;
1050	}
1051		3160
1052	attach_global	3161	cf::cede_to_tick;
1053	prio => 10000,
1054	on_cleanup => sub {
1055	db_sync;
1056	},	3162	}
		3163
		3164	while (my ($face, $info) = each %$faces) {
		3165	next unless $info->{smooth};
		3166
		3167	my $idx = cf::face::find $face
		3168	or next;
		3169
		3170	if (my $smooth = cf::face::find $info->{smooth}) {
		3171	cf::face::set_smooth $idx, $smooth;
		3172	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3173	} else {
		3174	warn "smooth face '$info->{smooth}' not found for face '$face'";
		3175	}
		3176
		3177	cf::cede_to_tick;
		3178	}
1057	;	3179	}
1058	}
1059		3180
1060	#############################################################################	3181	{
1061	# the server's main()	3182	my $anims = $facedata->{animinfo};
1062		3183
1063	sub cfg_load {	3184	while (my ($anim, $info) = each %$anims) {
		3185	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3186	cf::cede_to_tick;
		3187	}
		3188
		3189	cf::anim::invalidate_all; # d'oh
		3190	}
		3191
		3192	{
		3193	# TODO: for gcfclient pleasure, we should give resources
		3194	# that gcfclient doesn't grok a >10000 face index.
		3195	my $res = $facedata->{resource};
		3196
		3197	while (my ($name, $info) = each %$res) {
		3198	if (defined $info->{type}) {
		3199	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3200	my $data;
		3201
		3202	if ($info->{type} & 1) {
		3203	# prepend meta info
		3204
		3205	my $meta = $enc->encode ({
		3206	name => $name,
		3207	%{ $info->{meta} || {} },
		3208	});
		3209
		3210	$data = pack "(w/a*)*", $meta, $info->{data};
		3211	} else {
		3212	$data = $info->{data};
		3213	}
		3214
		3215	cf::face::set_data $idx, 0, $data, Digest::MD5::md5 $data;
		3216	cf::face::set_type $idx, $info->{type};
		3217	} else {
		3218	$RESOURCE{$name} = $info;
		3219	}
		3220
		3221	cf::cede_to_tick;
		3222	}
		3223
		3224	if (my $soundconf = delete $res->{"res/sound.conf"}) {
		3225	$soundconf = $enc->decode (delete $soundconf->{data});
		3226
		3227	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3228	my $sound = $soundconf->{compat}[$_]
		3229	or next;
		3230
		3231	my $face = cf::face::find "sound/$sound->[1]";
		3232	cf::sound::set $sound->[0] => $face;
		3233	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3234	}
		3235
		3236	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3237	my $face = cf::face::find "sound/$v";
		3238	cf::sound::set $k => $face;
		3239	}
		3240	}
		3241	}
		3242
		3243	1
		3244	}
		3245
		3246	register_exticmd fx_want => sub {
		3247	my ($ns, $want) = @_;
		3248
		3249	while (my ($k, $v) = each %$want) {
		3250	$ns->fx_want ($k, $v);
		3251	}
		3252	};
		3253
		3254	sub reload_regions {
		3255	# HACK to clear player env face cache, we need some signal framework
		3256	# for this (global event?)
		3257	%ext::player_env::MUSIC_FACE_CACHE = ();
		3258
		3259	load_resource_file "$MAPDIR/regions"
		3260	or die "unable to load regions file\n";
		3261
		3262	for (cf::region::list) {
		3263	$_->{match} = qr/$_->{match}/
		3264	if exists $_->{match};
		3265	}
		3266	}
		3267
		3268	sub reload_facedata {
		3269	load_facedata "$DATADIR/facedata"
		3270	or die "unable to load facedata\n";
		3271	}
		3272
		3273	sub reload_archetypes {
		3274	load_resource_file "$DATADIR/archetypes"
		3275	or die "unable to load archetypes\n";
		3276	#d# NEED to laod twice to resolve forward references
		3277	# this really needs to be done in an extra post-pass
		3278	# (which needs to be synchronous, so solve it differently)
		3279	load_resource_file "$DATADIR/archetypes"
		3280	or die "unable to load archetypes\n";
		3281	}
		3282
		3283	sub reload_treasures {
		3284	load_resource_file "$DATADIR/treasures"
		3285	or die "unable to load treasurelists\n";
		3286	}
		3287
		3288	sub reload_resources {
		3289	warn "reloading resource files...\n";
		3290
		3291	reload_regions;
		3292	reload_facedata;
		3293	#reload_archetypes;#d#
		3294	reload_archetypes;
		3295	reload_treasures;
		3296
		3297	warn "finished reloading resource files\n";
		3298	}
		3299
		3300	sub init {
		3301	reload_resources;
		3302	}
		3303
		3304	sub reload_config {
1064	open my $fh, "<:utf8", cf::confdir . "/config"	3305	open my $fh, "<:utf8", "$CONFDIR/config"
1065	or return;	3306	or return;
1066		3307
1067	local $/;	3308	local $/;
1068	*CFG = YAML::Syck::Load <$fh>;	3309	*CFG = YAML::Syck::Load <$fh>;
		3310
		3311	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		3312
		3313	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3314	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3315
		3316	if (exists $CFG{mlockall}) {
		3317	eval {
		3318	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3319	and die "WARNING: m(un)lockall failed: $!\n";
		3320	};
		3321	warn $@ if $@;
		3322	}
1069	}	3323	}
1070		3324
1071	sub main {	3325	sub main {
1072	cfg_load;	3326	# we must not ever block the main coroutine
1073	db_load;	3327	local $Coro::idle = sub {
		3328	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3329	(async {
		3330	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3331	EV::loop EV::LOOP_ONESHOT;
		3332	})->prio (Coro::PRIO_MAX);
		3333	};
		3334
		3335	reload_config;
		3336	db_init;
1074	load_extensions;	3337	load_extensions;
		3338
		3339	$TICK_WATCHER->start;
		3340	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
1075	Event::loop;	3341	EV::loop;
1076	}	3342	}
1077		3343
1078	#############################################################################	3344	#############################################################################
1079	# initialisation	3345	# initialisation and cleanup
1080		3346
1081	sub _perl_reload(&) {	3347	# install some emergency cleanup handlers
1082	my ($msg) = @_;	3348	BEGIN {
1083		3349	our %SIGWATCHER = ();
1084	$msg->("reloading...");	3350	for my $signal (qw(INT HUP TERM)) {
1085		3351	$SIGWATCHER{$signal} = EV::signal $signal, sub {
1086	eval {	3352	cf::cleanup "SIG$signal";
1087	# cancel all watchers
1088	$_->cancel for Event::all_watchers;
1089
1090	# unload all extensions
1091	for (@exts) {
1092	$msg->("unloading <$_>");
1093	unload_extension $_;
1094	}	3353	};
		3354	}
		3355	}
1095		3356
		3357	sub write_runtime {
		3358	my $runtime = "$LOCALDIR/runtime";
		3359
		3360	# first touch the runtime file to show we are still running:
		3361	# the fsync below can take a very very long time.
		3362
		3363	IO::AIO::aio_utime $runtime, undef, undef;
		3364
		3365	my $guard = cf::lock_acquire "write_runtime";
		3366
		3367	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		3368	or return;
		3369
		3370	my $value = $cf::RUNTIME + 90 + 10;
		3371	# 10 is the runtime save interval, for a monotonic clock
		3372	# 60 allows for the watchdog to kill the server.
		3373
		3374	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3375	and return;
		3376
		3377	# always fsync - this file is important
		3378	aio_fsync $fh
		3379	and return;
		3380
		3381	# touch it again to show we are up-to-date
		3382	aio_utime $fh, undef, undef;
		3383
		3384	close $fh
		3385	or return;
		3386
		3387	aio_rename "$runtime~", $runtime
		3388	and return;
		3389
		3390	warn "runtime file written.\n";
		3391
		3392	1
		3393	}
		3394
		3395	sub emergency_save() {
		3396	my $freeze_guard = cf::freeze_mainloop;
		3397
		3398	warn "enter emergency perl save\n";
		3399
		3400	cf::sync_job {
		3401	# use a peculiar iteration method to avoid tripping on perl
		3402	# refcount bugs in for. also avoids problems with players
		3403	# and maps saved/destroyed asynchronously.
		3404	warn "begin emergency player save\n";
		3405	for my $login (keys %cf::PLAYER) {
		3406	my $pl = $cf::PLAYER{$login} or next;
		3407	$pl->valid or next;
		3408	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3409	$pl->save;
		3410	}
		3411	warn "end emergency player save\n";
		3412
		3413	warn "begin emergency map save\n";
		3414	for my $path (keys %cf::MAP) {
		3415	my $map = $cf::MAP{$path} or next;
		3416	$map->valid or next;
		3417	$map->save;
		3418	}
		3419	warn "end emergency map save\n";
		3420
		3421	warn "begin emergency database checkpoint\n";
		3422	BDB::db_env_txn_checkpoint $DB_ENV;
		3423	warn "end emergency database checkpoint\n";
		3424	};
		3425
		3426	warn "leave emergency perl save\n";
		3427	}
		3428
		3429	sub post_cleanup {
		3430	my ($make_core) = @_;
		3431
		3432	warn Carp::longmess "post_cleanup backtrace"
		3433	if $make_core;
		3434	}
		3435
		3436	sub do_reload_perl() {
		3437	# can/must only be called in main
		3438	if ($Coro::current != $Coro::main) {
		3439	warn "can only reload from main coroutine";
		3440	return;
		3441	}
		3442
		3443	warn "reloading...";
		3444
		3445	warn "entering sync_job";
		3446
		3447	cf::sync_job {
		3448	cf::write_runtime; # external watchdog should not bark
		3449	cf::emergency_save;
		3450	cf::write_runtime; # external watchdog should not bark
		3451
		3452	warn "syncing database to disk";
		3453	BDB::db_env_txn_checkpoint $DB_ENV;
		3454
		3455	# if anything goes wrong in here, we should simply crash as we already saved
		3456
		3457	warn "flushing outstanding aio requests";
		3458	for (;;) {
		3459	BDB::flush;
		3460	IO::AIO::flush;
		3461	Coro::cede_notself;
		3462	last unless IO::AIO::nreqs || BDB::nreqs;
		3463	warn "iterate...";
		3464	}
		3465
		3466	++$RELOAD;
		3467
		3468	warn "cancelling all extension coros";
		3469	$_->cancel for values %EXT_CORO;
		3470	%EXT_CORO = ();
		3471
		3472	warn "removing commands";
		3473	%COMMAND = ();
		3474
		3475	warn "removing ext/exti commands";
		3476	%EXTCMD = ();
		3477	%EXTICMD = ();
		3478
		3479	warn "unloading/nuking all extensions";
		3480	for my $pkg (@EXTS) {
		3481	warn "... unloading $pkg";
		3482
		3483	if (my $cb = $pkg->can ("unload")) {
		3484	eval {
		3485	$cb->($pkg);
		3486	1
		3487	} or warn "$pkg unloaded, but with errors: $@";
		3488	}
		3489
		3490	warn "... nuking $pkg";
		3491	Symbol::delete_package $pkg;
		3492	}
		3493
1096	# unload all modules loaded from $LIBDIR	3494	warn "unloading all perl modules loaded from $LIBDIR";
1097	while (my ($k, $v) = each %INC) {	3495	while (my ($k, $v) = each %INC) {
1098	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3496	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1099		3497
1100	$msg->("removing <$k>");	3498	warn "... unloading $k";
1101	delete $INC{$k};	3499	delete $INC{$k};
1102		3500
1103	$k =~ s/\.pm$//;	3501	$k =~ s/\.pm$//;
1104	$k =~ s/\//::/g;	3502	$k =~ s/\//::/g;
1105		3503
…		…
1108	}	3506	}
1109		3507
1110	Symbol::delete_package $k;	3508	Symbol::delete_package $k;
1111	}	3509	}
1112		3510
1113	# sync database to disk
1114	cf::db_sync;
1115
1116	# get rid of safe::, as good as possible	3511	warn "getting rid of safe::, as good as possible";
1117	Symbol::delete_package "safe::$_"	3512	Symbol::delete_package "safe::$_"
1118	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3513	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1119		3514
1120	# remove register_script_function callbacks
1121	# TODO
1122
1123	# unload cf.pm "a bit"	3515	warn "unloading cf.pm \"a bit\"";
1124	delete $INC{"cf.pm"};	3516	delete $INC{"cf.pm"};
		3517	delete $INC{"cf/pod.pm"};
1125		3518
1126	# don't, removes xs symbols, too,	3519	# don't, removes xs symbols, too,
1127	# and global variables created in xs	3520	# and global variables created in xs
1128	#Symbol::delete_package __PACKAGE__;	3521	#Symbol::delete_package __PACKAGE__;
1129		3522
1130	# reload cf.pm	3523	warn "unload completed, starting to reload now";
		3524
1131	$msg->("reloading cf.pm");	3525	warn "reloading cf.pm";
1132	require cf;	3526	require cf;
		3527	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1133		3528
1134	# load config and database again	3529	warn "loading config and database again";
1135	cf::cfg_load;	3530	cf::reload_config;
1136	cf::db_load;
1137		3531
1138	# load extensions	3532	warn "loading extensions";
1139	$msg->("load extensions");
1140	cf::load_extensions;	3533	cf::load_extensions;
1141		3534
1142	# reattach attachments to objects	3535	warn "reattaching attachments to objects/players";
1143	$msg->("reattach");	3536	_global_reattach; # objects, sockets
1144	_global_reattach;	3537	warn "reattaching attachments to maps";
		3538	reattach $_ for values %MAP;
		3539	warn "reattaching attachments to players";
		3540	reattach $_ for values %PLAYER;
		3541
		3542	warn "leaving sync_job";
		3543
		3544	1
		3545	} or do {
		3546	warn $@;
		3547	warn "error while reloading, exiting.";
		3548	exit 1;
1145	};	3549	};
1146	$msg->($@) if $@;
1147		3550
1148	$msg->("reloaded");	3551	warn "reloaded";
1149	};	3552	};
1150		3553
1151	sub perl_reload() {	3554	our $RELOAD_WATCHER; # used only during reload
1152	_perl_reload {	3555
1153	warn $_[0];	3556	sub reload_perl() {
1154	print "$_[0]\n";	3557	# doing reload synchronously and two reloads happen back-to-back,
		3558	# coro crashes during coro_state_free->destroy here.
		3559
		3560	$RELOAD_WATCHER ||= EV::timer 0, 0, sub {
		3561	undef $RELOAD_WATCHER;
		3562	do_reload_perl;
1155	};	3563	};
1156	}	3564	}
1157		3565
1158	register "<global>", __PACKAGE__;
1159
1160	register_command "perl-reload" => sub {	3566	register_command "reload" => sub {
1161	my ($who, $arg) = @_;	3567	my ($who, $arg) = @_;
1162		3568
1163	if ($who->flag (FLAG_WIZ)) {	3569	if ($who->flag (FLAG_WIZ)) {
1164	_perl_reload {	3570	$who->message ("reloading server.");
1165	warn $_[0];	3571	async {
1166	$who->message ($_[0]);	3572	$Coro::current->{desc} = "perl_reload";
		3573	reload_perl;
1167	};	3574	};
1168	}	3575	}
1169	};	3576	};
1170		3577
1171	unshift @INC, $LIBDIR;	3578	unshift @INC, $LIBDIR;
1172		3579
1173	$TICK_WATCHER = Event->timer (	3580	my $bug_warning = 0;
1174	prio => 1,	3581
1175	async => 1,	3582	our @WAIT_FOR_TICK;
1176	at => $NEXT_TICK || 1,	3583	our @WAIT_FOR_TICK_BEGIN;
1177	cb => sub {	3584
		3585	sub wait_for_tick {
		3586	return unless $TICK_WATCHER->is_active;
		3587	return if $Coro::current == $Coro::main;
		3588
		3589	my $signal = new Coro::Signal;
		3590	push @WAIT_FOR_TICK, $signal;
		3591	$signal->wait;
		3592	}
		3593
		3594	sub wait_for_tick_begin {
		3595	return unless $TICK_WATCHER->is_active;
		3596	return if $Coro::current == $Coro::main;
		3597
		3598	my $signal = new Coro::Signal;
		3599	push @WAIT_FOR_TICK_BEGIN, $signal;
		3600	$signal->wait;
		3601	}
		3602
		3603	$TICK_WATCHER = EV::periodic_ns 0, $TICK, 0, sub {
		3604	if ($Coro::current != $Coro::main) {
		3605	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3606	unless ++$bug_warning > 10;
		3607	return;
		3608	}
		3609
		3610	$NOW = $tick_start = EV::now;
		3611
1178	cf::server_tick; # one server iteration	3612	cf::server_tick; # one server iteration
1179		3613
1180	my $NOW = Event::time;	3614	$RUNTIME += $TICK;
1181	$NEXT_TICK += $TICK;	3615	$NEXT_TICK = $_[0]->at;
1182		3616
1183	# if we are delayed by four ticks or more, skip them all	3617	if ($NOW >= $NEXT_RUNTIME_WRITE) {
1184	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3618	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
1185		3619	Coro::async_pool {
1186	$TICK_WATCHER->at ($NEXT_TICK);	3620	$Coro::current->{desc} = "runtime saver";
1187	$TICK_WATCHER->start;	3621	write_runtime
		3622	or warn "ERROR: unable to write runtime file: $!";
		3623	};
1188	},	3624	}
1189	);
1190		3625
		3626	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3627	$sig->send;
		3628	}
		3629	while (my $sig = shift @WAIT_FOR_TICK) {
		3630	$sig->send;
		3631	}
		3632
		3633	$LOAD = ($NOW - $tick_start) / $TICK;
		3634	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3635
		3636	_post_tick;
		3637	};
		3638	$TICK_WATCHER->priority (EV::MAXPRI);
		3639
		3640	{
		3641	# configure BDB
		3642
		3643	BDB::min_parallel 8;
		3644	BDB::max_poll_reqs $TICK * 0.1;
		3645	$Coro::BDB::WATCHER->priority (1);
		3646
		3647	unless ($DB_ENV) {
		3648	$DB_ENV = BDB::db_env_create;
		3649	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC
		3650	| BDB::LOG_AUTOREMOVE, 1);
		3651	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		3652	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		3653
		3654	cf::sync_job {
		3655	eval {
		3656	BDB::db_env_open
		3657	$DB_ENV,
		3658	$BDBDIR,
		3659	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3660	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3661	0666;
		3662
		3663	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3664	};
		3665
		3666	cf::cleanup "db_env_open(db): $@" if $@;
		3667	};
		3668	}
		3669
		3670	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		3671	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		3672	};
		3673	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		3674	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		3675	};
		3676	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		3677	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		3678	};
		3679	}
		3680
		3681	{
		3682	# configure IO::AIO
		3683
		3684	IO::AIO::min_parallel 8;
1191	IO::AIO::max_poll_time $TICK * 0.2;	3685	IO::AIO::max_poll_time $TICK * 0.1;
		3686	$Coro::AIO::WATCHER->priority (1);
		3687	}
1192		3688
1193	Event->io (fd => IO::AIO::poll_fileno,	3689	my $_log_backtrace;
1194	poll => 'r',	3690
1195	prio => 5,	3691	sub _log_backtrace {
1196	cb => \&IO::AIO::poll_cb);	3692	my ($msg, @addr) = @_;
		3693
		3694	$msg =~ s/\n//;
		3695
		3696	# limit the # of concurrent backtraces
		3697	if ($_log_backtrace < 2) {
		3698	++$_log_backtrace;
		3699	async {
		3700	$Coro::current->{desc} = "abt $msg";
		3701
		3702	my @bt = fork_call {
		3703	@addr = map { sprintf "%x", $_ } @addr;
		3704	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3705	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3706	or die "addr2line: $!";
		3707
		3708	my @funcs;
		3709	my @res = <$fh>;
		3710	chomp for @res;
		3711	while (@res) {
		3712	my ($func, $line) = splice @res, 0, 2, ();
		3713	push @funcs, "[$func] $line";
		3714	}
		3715
		3716	@funcs
		3717	};
		3718
		3719	LOG llevInfo, "[ABT] $msg\n";
		3720	LOG llevInfo, "[ABT] $_\n" for @bt;
		3721	--$_log_backtrace;
		3722	};
		3723	} else {
		3724	LOG llevInfo, "[ABT] $msg\n";
		3725	LOG llevInfo, "[ABT] [suppressed]\n";
		3726	}
		3727	}
		3728
		3729	# load additional modules
		3730	use cf::pod;
		3731
		3732	END { cf::emergency_save }
1197		3733
1198	1	3734	1
1199		3735

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