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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.30 by elmex, Sat Aug 12 11:51:37 2006 UTC vs.
Revision 1.310 by elmex, Mon Jul 16 15:43:49 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
		15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
10	use Event;	18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
		29	use Fcntl;
		30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
		32	use Time::HiRes;
		33	use Compress::LZF;
		34	use Digest::MD5 ();
		35
		36	# configure various modules to our taste
		37	#
		38	$Storable::canonical = 1; # reduce rsync transfers
		39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		40	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		41
11	$Event::Eval = 1; # no idea why this is required, but it is	42	$Event::Eval = 1; # no idea why this is required, but it is
12		43
13	use strict;	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		45	$YAML::Syck::ImplicitUnicode = 1;
14		46
15	our %COMMAND;	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
		50
		51	our %COMMAND = ();
		52	our %COMMAND_TIME = ();
		53
		54	our @EXTS = (); # list of extension package names
		55	our %EXTCMD = ();
		56	our %EXTICMD = ();
		57	our %EXT_CORO = (); # coroutines bound to extensions
		58	our %EXT_MAP = (); # pluggable maps
		59
		60	our $RELOAD; # number of reloads so far
16	our @EVENT;	61	our @EVENT;
17	our %PROP_TYPE;	62
18	our %PROP_IDX;	63	our $CONFDIR = confdir;
19	our $LIBDIR = maps_directory "perl";	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
		75	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		76	our $TICK_WATCHER;
		77	our $AIO_POLL_WATCHER;
		78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
		79	our $NEXT_TICK;
		80	our $NOW;
		81	our $USE_FSYNC = 1; # use fsync to write maps - default off
		82
		83	our $BDB_POLL_WATCHER;
		84	our $DB_ENV;
		85
		86	our %CFG;
		87
		88	our $UPTIME; $UPTIME ||= time;
		89	our $RUNTIME;
		90
		91	our %PLAYER; # all users
		92	our %MAP; # all maps
		93	our $LINK_MAP; # the special {link} map, which is always available
		94
		95	# used to convert map paths into valid unix filenames by replacing / by ∕
		96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		97
		98	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		99	our $LOADAVG; # same thing, but with alpha-smoothing
		100	our $tick_start; # for load detecting purposes
		101
		102	binmode STDOUT;
		103	binmode STDERR;
		104
		105	# read virtual server time, if available
		106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		107	open my $fh, "<", "$LOCALDIR/runtime"
		108	or die "unable to read runtime file: $!";
		109	$RUNTIME = <$fh> + 0.;
		110	}
		111
		112	mkdir $_
		113	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		114
		115	our $EMERGENCY_POSITION;
		116
		117	sub cf::map::normalise;
		118
		119	#############################################################################
		120
		121	=head2 GLOBAL VARIABLES
		122
		123	=over 4
		124
		125	=item $cf::UPTIME
		126
		127	The timestamp of the server start (so not actually an uptime).
		128
		129	=item $cf::RUNTIME
		130
		131	The time this server has run, starts at 0 and is increased by $cf::TICK on
		132	every server tick.
		133
		134	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		135	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		136	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		137
		138	Various directories - "/etc", read-only install directory, perl-library
		139	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		140	unique-items directory, player file directory, random maps directory and
		141	database environment.
		142
		143	=item $cf::NOW
		144
		145	The time of the last (current) server tick.
		146
		147	=item $cf::TICK
		148
		149	The interval between server ticks, in seconds.
		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
		160
		161	=item %cf::CFG
		162
		163	Configuration for the server, loaded from C</etc/crossfire/config>, or
		164	from wherever your confdir points to.
		165
		166	=item cf::wait_for_tick, cf::wait_for_tick_begin
		167
		168	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		169	returns directly I<after> the tick processing (and consequently, can only wake one process
		170	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		171
		172	=item @cf::INVOKE_RESULTS
		173
		174	This array contains the results of the last C<invoke ()> call. When
		175	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		176	that call.
		177
		178	=back
		179
		180	=cut
20		181
21	BEGIN {	182	BEGIN {
22	@EVENT = map lc, @EVENT;
23
24	*CORE::GLOBAL::warn = sub {	183	*CORE::GLOBAL::warn = sub {
25	my $msg = join "", @_;	184	my $msg = join "", @_;
		185
26	$msg .= "\n"	186	$msg .= "\n"
27	unless $msg =~ /\n$/;	187	unless $msg =~ /\n$/;
28		188
29	print STDERR "cfperl: $msg";	189	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		190
		191	utf8::encode $msg;
30	LOG llevError, "cfperl: $msg";	192	LOG llevError, $msg;
31	};	193	};
32	}	194	}
33		195
34	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	196	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		197	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		198	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		199	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		200	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		201	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
		202	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
35		203
36	# generate property mutators	204	# we bless all objects into (empty) derived classes to force a method lookup
37	sub prop_gen {	205	# within the Safe compartment.
38	my ($prefix, $class) = @_;	206	for my $pkg (qw(
39		207	cf::global cf::attachable
		208	cf::object cf::object::player
		209	cf::client cf::player
		210	cf::arch cf::living
		211	cf::map cf::party cf::region
		212	)) {
40	no strict 'refs';	213	no strict 'refs';
41
42	for my $prop (keys %PROP_TYPE) {
43	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
44	my $sub = lc $1;
45
46	my $type = $PROP_TYPE{$prop};
47	my $idx = $PROP_IDX {$prop};
48
49	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
50	$_[0]->get_property ($type, $idx)
51	};
52
53	*{"$class\::set_$sub"} = sub {
54	$_[0]->set_property ($type, $idx, $_[1]);
55	} unless $ignore_set{$prop};
56	}
57	}
58
59	# auto-generate most of the API
60
61	prop_gen OBJECT_PROP => "cf::object";
62	# CFAPI_OBJECT_ANIMATION?
63	prop_gen PLAYER_PROP => "cf::object::player";
64
65	prop_gen MAP_PROP => "cf::map";
66	prop_gen ARCH_PROP => "cf::arch";
67
68	# guessed hierarchies
69
70	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
71	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
72
73	# we bless all objects into derived classes to force a method lookup
74	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
76	no strict 'refs';
77	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	214	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	215	}
79		216
80	$Event::DIED = sub {	217	$Event::DIED = sub {
81	warn "error in event callback: @_";	218	warn "error in event callback: @_";
82	};	219	};
83		220
84	my %ext_pkg;	221	#############################################################################
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89		222
90	sub inject_event {	223	=head2 UTILITY FUNCTIONS
91	my $extension = shift;	224
		225	=over 4
		226
		227	=item dumpval $ref
		228
		229	=cut
		230
		231	sub dumpval {
		232	eval {
		233	local $SIG{__DIE__};
		234	my $d;
		235	if (1) {
		236	$d = new Data::Dumper([$_[0]], ["*var"]);
		237	$d->Terse(1);
		238	$d->Indent(2);
		239	$d->Quotekeys(0);
		240	$d->Useqq(1);
		241	#$d->Bless(...);
		242	$d->Seen($_[1]) if @_ > 1;
		243	$d = $d->Dump();
		244	}
		245	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		246	$d
		247	} || "[unable to dump $_[0]: '$@']";
		248	}
		249
		250	=item $ref = cf::from_json $json
		251
		252	Converts a JSON string into the corresponding perl data structure.
		253
		254	=item $json = cf::to_json $ref
		255
		256	Converts a perl data structure into its JSON representation.
		257
		258	=cut
		259
		260	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		261
		262	sub to_json ($) { $json_coder->encode ($_[0]) }
		263	sub from_json ($) { $json_coder->decode ($_[0]) }
		264
		265	=item cf::lock_wait $string
		266
		267	Wait until the given lock is available. See cf::lock_acquire.
		268
		269	=item my $lock = cf::lock_acquire $string
		270
		271	Wait until the given lock is available and then acquires it and returns
		272	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		273	for example when the coroutine gets canceled), the lock is automatically
		274	returned.
		275
		276	Lock names should begin with a unique identifier (for example, cf::map::find
		277	uses map_find and cf::map::load uses map_load).
		278
		279	=item $locked = cf::lock_active $string
		280
		281	Return true if the lock is currently active, i.e. somebody has locked it.
		282
		283	=cut
		284
		285	our %LOCK;
		286
		287	sub lock_wait($) {
		288	my ($key) = @_;
		289
		290	# wait for lock, if any
		291	while ($LOCK{$key}) {
		292	push @{ $LOCK{$key} }, $Coro::current;
		293	Coro::schedule;
		294	}
		295	}
		296
		297	sub lock_acquire($) {
		298	my ($key) = @_;
		299
		300	# wait, to be sure we are not locked
		301	lock_wait $key;
		302
		303	$LOCK{$key} = [];
		304
		305	Coro::guard {
		306	# wake up all waiters, to be on the safe side
		307	$_->ready for @{ delete $LOCK{$key} };
		308	}
		309	}
		310
		311	sub lock_active($) {
		312	my ($key) = @_;
		313
		314	! ! $LOCK{$key}
		315	}
		316
		317	sub freeze_mainloop {
		318	return unless $TICK_WATCHER->is_active;
		319
		320	my $guard = Coro::guard {
		321	$TICK_WATCHER->start;
		322	};
		323	$TICK_WATCHER->stop;
		324	$guard
		325	}
		326
		327	=item cf::async { BLOCK }
		328
		329	Currently the same as Coro::async_pool, meaning you cannot use
		330	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		331	thing you are allowed to do is call C<prio> on it.
		332
		333	=cut
		334
		335	BEGIN { *async = \&Coro::async_pool }
		336
		337	=item cf::sync_job { BLOCK }
		338
		339	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		340	is always able to handle events or runnable, as Crossfire TRT is only
		341	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		342	acceptable.
		343
		344	If it must be done, put the blocking parts into C<sync_job>. This will run
		345	the given BLOCK in another coroutine while waiting for the result. The
		346	server will be frozen during this time, so the block should either finish
		347	fast or be very important.
		348
		349	=cut
		350
		351	sub sync_job(&) {
		352	my ($job) = @_;
		353
		354	if ($Coro::current == $Coro::main) {
		355	my $time = Event::time;
		356
		357	# this is the main coro, too bad, we have to block
		358	# till the operation succeeds, freezing the server :/
		359
		360	# TODO: use suspend/resume instead
		361	# (but this is cancel-safe)
		362	my $freeze_guard = freeze_mainloop;
		363
		364	my $busy = 1;
		365	my @res;
		366
		367	(async {
		368	@res = eval { $job->() };
		369	warn $@ if $@;
		370	undef $busy;
		371	})->prio (Coro::PRIO_MAX);
		372
		373	while ($busy) {
		374	Coro::cede or Event::one_event;
		375	}
		376
		377	$time = Event::time - $time;
		378
		379	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		380	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		381
		382	$tick_start += $time; # do not account sync jobs to server load
		383
		384	wantarray ? @res : $res[0]
		385	} else {
		386	# we are in another coroutine, how wonderful, everything just works
		387
		388	$job->()
		389	}
		390	}
		391
		392	=item $coro = cf::async_ext { BLOCK }
		393
		394	Like async, but this coro is automatically being canceled when the
		395	extension calling this is being unloaded.
		396
		397	=cut
		398
		399	sub async_ext(&) {
		400	my $cb = shift;
		401
		402	my $coro = &Coro::async ($cb);
		403
		404	$coro->on_destroy (sub {
		405	delete $EXT_CORO{$coro+0};
		406	});
		407	$EXT_CORO{$coro+0} = $coro;
		408
		409	$coro
		410	}
		411
		412	=item fork_call { }, $args
		413
		414	Executes the given code block with the given arguments in a seperate
		415	process, returning the results. Everything must be serialisable with
		416	Coro::Storable. May, of course, block. Note that the executed sub may
		417	never block itself or use any form of Event handling.
		418
		419	=cut
		420
		421	sub _store_scalar {
		422	open my $fh, ">", \my $buf
		423	or die "fork_call: cannot open fh-to-buf in child : $!";
		424	Storable::store_fd $_[0], $fh;
		425	close $fh;
		426
		427	$buf
		428	}
		429
		430	sub fork_call(&@) {
		431	my ($cb, @args) = @_;
		432
		433	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		434	# or die "socketpair: $!";
		435	pipe my $fh1, my $fh2
		436	or die "pipe: $!";
		437
		438	if (my $pid = fork) {
		439	close $fh2;
		440
		441	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		442	warn "pst<$res>" unless $res =~ /^pst/;
		443	$res = Coro::Storable::thaw $res;
		444
		445	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		446
		447	Carp::confess $$res unless "ARRAY" eq ref $res;
		448
		449	return wantarray ? @$res : $res->[-1];
		450	} else {
		451	reset_signals;
		452	local $SIG{__WARN__};
		453	local $SIG{__DIE__};
		454	# just in case, this hack effectively disables event
		455	# in the child. cleaner and slower would be canceling all watchers,
		456	# but this works for the time being.
		457	local $Coro::idle;
		458	$Coro::current->prio (Coro::PRIO_MAX);
		459
		460	eval {
		461	close $fh1;
		462
		463	my @res = eval { $cb->(@args) };
		464
		465	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		466	close $fh2;
		467	};
		468
		469	warn $@ if $@;
		470	_exit 0;
		471	}
		472	}
		473
		474	=item $value = cf::db_get $family => $key
		475
		476	Returns a single value from the environment database.
		477
		478	=item cf::db_put $family => $key => $value
		479
		480	Stores the given C<$value> in the family. It can currently store binary
		481	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		482
		483	=cut
		484
		485	our $DB;
		486
		487	sub db_init {
		488	unless ($DB) {
		489	$DB = BDB::db_create $DB_ENV;
		490
		491	cf::sync_job {
		492	eval {
		493	$DB->set_flags (BDB::CHKSUM);
		494
		495	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		496	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		497	cf::cleanup "db_open(db): $!" if $!;
		498	};
		499	cf::cleanup "db_open(db): $@" if $@;
		500	};
		501	}
		502	}
		503
		504	sub db_get($$) {
		505	my $key = "$_[0]/$_[1]";
		506
		507	cf::sync_job {
		508	BDB::db_get $DB, undef, $key, my $data;
		509
		510	$! ? ()
		511	: $data
		512	}
		513	}
		514
		515	sub db_put($$$) {
		516	BDB::dbreq_pri 4;
		517	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		518	}
		519
		520	=item cf::cache $id => [$paths...], $processversion => $process
		521
		522	Generic caching function that returns the value of the resource $id,
		523	caching and regenerating as required.
		524
		525	This function can block.
		526
		527	=cut
		528
		529	sub cache {
		530	my ($id, $src, $processversion, $process) = @_;
		531
		532	my $meta =
		533	join "\x00",
		534	$processversion,
		535	map {
		536	aio_stat $_
		537	and Carp::croak "$_: $!";
		538
		539	($_, (stat _)[7,9])
		540	} @$src;
		541
		542	my $dbmeta = db_get cache => "$id/meta";
		543	if ($dbmeta ne $meta) {
		544	# changed, we may need to process
		545
		546	my @data;
		547	my $md5;
		548
		549	for (0 .. $#$src) {
		550	0 <= aio_load $src->[$_], $data[$_]
		551	or Carp::croak "$src->[$_]: $!";
		552	}
		553
		554	# if processing is expensive, check
		555	# checksum first
		556	if (1) {
		557	$md5 =
		558	join "\x00",
		559	$processversion,
		560	map {
		561	Coro::cede;
		562	($src->[$_], Digest::MD5::md5_hex $data[$_])
		563	} 0.. $#$src;
		564
		565
		566	my $dbmd5 = db_get cache => "$id/md5";
		567	if ($dbmd5 eq $md5) {
		568	db_put cache => "$id/meta", $meta;
		569
		570	return db_get cache => "$id/data";
		571	}
		572	}
		573
		574	my $t1 = Time::HiRes::time;
		575	my $data = $process->(\@data);
		576	my $t2 = Time::HiRes::time;
		577
		578	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		579
		580	db_put cache => "$id/data", $data;
		581	db_put cache => "$id/md5" , $md5;
		582	db_put cache => "$id/meta", $meta;
		583
		584	return $data;
		585	}
		586
		587	db_get cache => "$id/data"
		588	}
		589
		590	=item cf::datalog type => key => value, ...
		591
		592	Log a datalog packet of the given type with the given key-value pairs.
		593
		594	=cut
		595
		596	sub datalog($@) {
		597	my ($type, %kv) = @_;
		598	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		599	}
		600
		601	=back
		602
		603	=cut
		604
		605	#############################################################################
		606
		607	=head2 ATTACHABLE OBJECTS
		608
		609	Many objects in crossfire are so-called attachable objects. That means you can
		610	attach callbacks/event handlers (a collection of which is called an "attachment")
		611	to it. All such attachable objects support the following methods.
		612
		613	In the following description, CLASS can be any of C<global>, C<object>
		614	C<player>, C<client> or C<map> (i.e. the attachable objects in
		615	Crossfire TRT).
		616
		617	=over 4
		618
		619	=item $attachable->attach ($attachment, key => $value...)
		620
		621	=item $attachable->detach ($attachment)
		622
		623	Attach/detach a pre-registered attachment to a specific object and give it
		624	the specified key/value pairs as arguments.
		625
		626	Example, attach a minesweeper attachment to the given object, making it a
		627	10x10 minesweeper game:
		628
		629	$obj->attach (minesweeper => width => 10, height => 10);
		630
		631	=item $bool = $attachable->attached ($name)
		632
		633	Checks wether the named attachment is currently attached to the object.
		634
		635	=item cf::CLASS->attach ...
		636
		637	=item cf::CLASS->detach ...
		638
		639	Define an anonymous attachment and attach it to all objects of the given
		640	CLASS. See the next function for an explanation of its arguments.
		641
		642	You can attach to global events by using the C<cf::global> class.
		643
		644	Example, log all player logins:
		645
		646	cf::player->attach (
		647	on_login => sub {
		648	my ($pl) = @_;
		649	...
		650	},
		651	);
		652
		653	Example, attach to the jeweler skill:
		654
		655	cf::object->attach (
		656	type => cf::SKILL,
		657	subtype => cf::SK_JEWELER,
		658	on_use_skill => sub {
		659	my ($sk, $ob, $part, $dir, $msg) = @_;
		660	...
		661	},
		662	);
		663
		664	=item cf::CLASS::attachment $name, ...
		665
		666	Register an attachment by C<$name> through which attachable objects of the
		667	given CLASS can refer to this attachment.
		668
		669	Some classes such as crossfire maps and objects can specify attachments
		670	that are attached at load/instantiate time, thus the need for a name.
		671
		672	These calls expect any number of the following handler/hook descriptions:
		673
		674	=over 4
		675
		676	=item prio => $number
		677
		678	Set the priority for all following handlers/hooks (unless overwritten
		679	by another C<prio> setting). Lower priority handlers get executed
		680	earlier. The default priority is C<0>, and many built-in handlers are
		681	registered at priority C<-1000>, so lower priorities should not be used
		682	unless you know what you are doing.
		683
		684	=item type => $type
		685
		686	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		687	given type of objects only (the additional parameter C<subtype> can be
		688	used to further limit to the given subtype).
		689
		690	=item on_I<event> => \&cb
		691
		692	Call the given code reference whenever the named event happens (event is
		693	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		694	handlers are recognised generally depends on the type of object these
		695	handlers attach to).
		696
		697	See F<include/eventinc.h> for the full list of events supported, and their
		698	class.
		699
		700	=item package => package::
		701
		702	Look for sub functions of the name C<< on_I<event> >> in the given
		703	package and register them. Only handlers for eevents supported by the
		704	object/class are recognised.
		705
		706	=back
		707
		708	Example, define an attachment called "sockpuppet" that calls the given
		709	event handler when a monster attacks:
		710
		711	cf::object::attachment sockpuppet =>
		712	on_skill_attack => sub {
		713	my ($self, $victim) = @_;
		714	...
		715	}
		716	}
		717
		718	=item $attachable->valid
		719
		720	Just because you have a perl object does not mean that the corresponding
		721	C-level object still exists. If you try to access an object that has no
		722	valid C counterpart anymore you get an exception at runtime. This method
		723	can be used to test for existence of the C object part without causing an
		724	exception.
		725
		726	=cut
		727
		728	# the following variables are defined in .xs and must not be re-created
		729	our @CB_GLOBAL = (); # registry for all global events
		730	our @CB_ATTACHABLE = (); # registry for all attachables
		731	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		732	our @CB_PLAYER = ();
		733	our @CB_CLIENT = ();
		734	our @CB_TYPE = (); # registry for type (cf-object class) based events
		735	our @CB_MAP = ();
		736
		737	my %attachment;
		738
		739	sub cf::attachable::thawer_merge {
		740	# simply override everything except _meta
		741	local $_[0]{_meta};
		742	%{$_[0]} = %{$_[1]};
		743	}
		744
		745	sub _attach_cb($$$$) {
		746	my ($registry, $event, $prio, $cb) = @_;
		747
		748	use sort 'stable';
		749
		750	$cb = [$prio, $cb];
		751
		752	@{$registry->[$event]} = sort
		753	{ $a->[0] cmp $b->[0] }
		754	@{$registry->[$event] || []}, $cb;
		755	}
		756
		757	# hack
		758	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		759
		760	# attach handles attaching event callbacks
		761	# the only thing the caller has to do is pass the correct
		762	# registry (== where the callback attaches to).
		763	sub _attach {
		764	my ($registry, $klass, @arg) = @_;
		765
		766	my $object_type;
		767	my $prio = 0;
		768	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		769
		770	#TODO: get rid of this hack
		771	if ($attachable_klass{$klass}) {
		772	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		773	}
		774
		775	while (@arg) {
		776	my $type = shift @arg;
		777
		778	if ($type eq "prio") {
		779	$prio = shift @arg;
		780
		781	} elsif ($type eq "type") {
		782	$object_type = shift @arg;
		783	$registry = $CB_TYPE[$object_type] ||= [];
		784
		785	} elsif ($type eq "subtype") {
		786	defined $object_type or Carp::croak "subtype specified without type";
		787	my $object_subtype = shift @arg;
		788	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		789
		790	} elsif ($type eq "package") {
		791	my $pkg = shift @arg;
		792
		793	while (my ($name, $id) = each %cb_id) {
		794	if (my $cb = $pkg->can ($name)) {
		795	_attach_cb $registry, $id, $prio, $cb;
		796	}
		797	}
		798
		799	} elsif (exists $cb_id{$type}) {
		800	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		801
		802	} elsif (ref $type) {
		803	warn "attaching objects not supported, ignoring.\n";
		804
		805	} else {
		806	shift @arg;
		807	warn "attach argument '$type' not supported, ignoring.\n";
		808	}
		809	}
		810	}
		811
		812	sub _object_attach {
		813	my ($obj, $name, %arg) = @_;
		814
		815	return if exists $obj->{_attachment}{$name};
		816
		817	if (my $attach = $attachment{$name}) {
		818	my $registry = $obj->registry;
		819
		820	for (@$attach) {
		821	my ($klass, @attach) = @$_;
		822	_attach $registry, $klass, @attach;
		823	}
		824
		825	$obj->{$name} = \%arg;
		826	} else {
		827	warn "object uses attachment '$name' which is not available, postponing.\n";
		828	}
		829
		830	$obj->{_attachment}{$name} = undef;
		831	}
		832
		833	sub cf::attachable::attach {
		834	if (ref $_[0]) {
		835	_object_attach @_;
		836	} else {
		837	_attach shift->_attach_registry, @_;
		838	}
		839	_recalc_want;
		840	};
		841
		842	# all those should be optimised
		843	sub cf::attachable::detach {
		844	my ($obj, $name) = @_;
		845
		846	if (ref $obj) {
		847	delete $obj->{_attachment}{$name};
		848	reattach ($obj);
		849	} else {
		850	Carp::croak "cannot, currently, detach class attachments";
		851	}
		852	_recalc_want;
		853	};
		854
		855	sub cf::attachable::attached {
		856	my ($obj, $name) = @_;
		857
		858	exists $obj->{_attachment}{$name}
		859	}
		860
		861	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		862	eval "#line " . __LINE__ . " 'cf.pm'
		863	sub cf::\L$klass\E::_attach_registry {
		864	(\\\@CB_$klass, KLASS_$klass)
		865	}
		866
		867	sub cf::\L$klass\E::attachment {
		868	my \$name = shift;
		869
		870	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		871	}
		872	";
		873	die if $@;
		874	}
		875
		876	our $override;
		877	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		878
		879	sub override {
		880	$override = 1;
		881	@INVOKE_RESULTS = (@_);
		882	}
		883
		884	sub do_invoke {
92	my $event_code = shift;	885	my $event = shift;
		886	my $callbacks = shift;
93		887
94	my $cb = $hook[$event_code]{$extension}	888	@INVOKE_RESULTS = ();
		889
		890	local $override;
		891
		892	for (@$callbacks) {
		893	eval { &{$_->[1]} };
		894
		895	if ($@) {
		896	warn "$@";
		897	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		898	override;
		899	}
		900
		901	return 1 if $override;
		902	}
		903
		904	0
		905	}
		906
		907	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		908
		909	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		910
		911	Generate an object-specific event with the given arguments.
		912
		913	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		914	removed in future versions), and there is no public API to access override
		915	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		916
		917	=back
		918
		919	=cut
		920
		921	#############################################################################
		922	# object support
		923
		924	sub reattach {
		925	# basically do the same as instantiate, without calling instantiate
		926	my ($obj) = @_;
		927
		928	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		929
		930	my $registry = $obj->registry;
		931
		932	@$registry = ();
		933
		934	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		935
		936	for my $name (keys %{ $obj->{_attachment} || {} }) {
		937	if (my $attach = $attachment{$name}) {
		938	for (@$attach) {
		939	my ($klass, @attach) = @$_;
		940	_attach $registry, $klass, @attach;
		941	}
		942	} else {
		943	warn "object uses attachment '$name' that is not available, postponing.\n";
		944	}
		945	}
		946	}
		947
		948	cf::attachable->attach (
		949	prio => -1000000,
		950	on_instantiate => sub {
		951	my ($obj, $data) = @_;
		952
		953	$data = from_json $data;
		954
		955	for (@$data) {
		956	my ($name, $args) = @$_;
		957
		958	$obj->attach ($name, %{$args || {} });
		959	}
		960	},
		961	on_reattach => \&reattach,
		962	on_clone => sub {
		963	my ($src, $dst) = @_;
		964
		965	@{$dst->registry} = @{$src->registry};
		966
		967	%$dst = %$src;
		968
		969	%{$dst->{_attachment}} = %{$src->{_attachment}}
		970	if exists $src->{_attachment};
		971	},
		972	);
		973
		974	sub object_freezer_save {
		975	my ($filename, $rdata, $objs) = @_;
		976
		977	sync_job {
		978	if (length $$rdata) {
		979	warn sprintf "saving %s (%d,%d)\n",
		980	$filename, length $$rdata, scalar @$objs;
		981
		982	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		983	chmod SAVE_MODE, $fh;
		984	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		985	aio_fsync $fh if $cf::USE_FSYNC;
		986	close $fh;
		987
		988	if (@$objs) {
		989	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		990	chmod SAVE_MODE, $fh;
		991	my $data = Storable::nfreeze { version => 1, objs => $objs };
		992	aio_write $fh, 0, (length $data), $data, 0;
		993	aio_fsync $fh if $cf::USE_FSYNC;
		994	close $fh;
		995	aio_rename "$filename.pst~", "$filename.pst";
		996	}
		997	} else {
		998	aio_unlink "$filename.pst";
		999	}
		1000
		1001	aio_rename "$filename~", $filename;
		1002	} else {
		1003	warn "FATAL: $filename~: $!\n";
		1004	}
		1005	} else {
		1006	aio_unlink $filename;
		1007	aio_unlink "$filename.pst";
		1008	}
		1009	}
		1010	}
		1011
		1012	sub object_freezer_as_string {
		1013	my ($rdata, $objs) = @_;
		1014
		1015	use Data::Dumper;
		1016
		1017	$$rdata . Dumper $objs
		1018	}
		1019
		1020	sub object_thawer_load {
		1021	my ($filename) = @_;
		1022
		1023	my ($data, $av);
		1024
		1025	(aio_load $filename, $data) >= 0
95	or return;	1026	or return;
96		1027
97	&$cb	1028	unless (aio_stat "$filename.pst") {
98	}	1029	(aio_load "$filename.pst", $av) >= 0
99
100	sub inject_global_event {
101	my $event = shift;
102
103	my $cb = $hook[$event]
104	or return;	1030	or return;
105		1031	$av = eval { (Storable::thaw $av)->{objs} };
106	List::Util::max map &$_, values %$cb
107	}
108
109	sub inject_command {
110	my ($name, $obj, $params) = @_;
111
112	for my $cmd (@{ $command{$name} }) {
113	$cmd->[1]->($obj, $params);
114	}	1032	}
115		1033
116	-1	1034	warn sprintf "loading %s (%d)\n",
		1035	$filename, length $data, scalar @{$av || []};
		1036	return ($data, $av);
117	}	1037	}
		1038
		1039	=head2 COMMAND CALLBACKS
		1040
		1041	=over 4
		1042
		1043	=cut
		1044
		1045	#############################################################################
		1046	# command handling &c
		1047
		1048	=item cf::register_command $name => \&callback($ob,$args);
		1049
		1050	Register a callback for execution when the client sends the user command
		1051	$name.
		1052
		1053	=cut
118		1054
119	sub register_command {	1055	sub register_command {
120	my ($name, $time, $cb) = @_;	1056	my ($name, $cb) = @_;
121		1057
122	my $caller = caller;	1058	my $caller = caller;
123	#warn "registering command '$name/$time' to '$caller'";	1059	#warn "registering command '$name/$time' to '$caller'";
124		1060
125	push @{ $command{$name} }, [$time, $cb, $caller];	1061	push @{ $COMMAND{$name} }, [$caller, $cb];
126	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
127	}	1062	}
		1063
		1064	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1065
		1066	Register a callback for execution when the client sends an (synchronous)
		1067	extcmd packet. Ext commands will be processed in the order they are
		1068	received by the server, like other user commands. The first argument is
		1069	the logged-in player. Ext commands can only be processed after a player
		1070	has logged in successfully.
		1071
		1072	If the callback returns something, it is sent back as if reply was being
		1073	called.
		1074
		1075	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1076
		1077	Register a callback for execution when the client sends an (asynchronous)
		1078	exticmd packet. Exti commands are processed by the server as soon as they
		1079	are received, i.e. out of order w.r.t. other commands. The first argument
		1080	is a client socket. Exti commands can be received anytime, even before
		1081	log-in.
		1082
		1083	If the callback returns something, it is sent back as if reply was being
		1084	called.
		1085
		1086	=cut
128		1087
129	sub register_extcmd {	1088	sub register_extcmd {
130	my ($name, $cb) = @_;	1089	my ($name, $cb) = @_;
131		1090
132	my $caller = caller;	1091	$EXTCMD{$name} = $cb;
133	#warn "registering extcmd '$name' to '$caller'";
134
135	$extcmd{$name} = [$cb, $caller];
136	}	1092	}
		1093
		1094	sub register_exticmd {
		1095	my ($name, $cb) = @_;
		1096
		1097	$EXTICMD{$name} = $cb;
		1098	}
		1099
		1100	cf::player->attach (
		1101	on_command => sub {
		1102	my ($pl, $name, $params) = @_;
		1103
		1104	my $cb = $COMMAND{$name}
		1105	or return;
		1106
		1107	for my $cmd (@$cb) {
		1108	$cmd->[1]->($pl->ob, $params);
		1109	}
		1110
		1111	cf::override;
		1112	},
		1113	on_extcmd => sub {
		1114	my ($pl, $buf) = @_;
		1115
		1116	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
		1117
		1118	if (ref $msg) {
		1119	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		1120	if (my %reply = $cb->($pl, $msg)) {
		1121	$pl->ext_reply ($msg->{msgid}, %reply);
		1122	}
		1123	}
		1124	} else {
		1125	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1126	}
		1127
		1128	cf::override;
		1129	},
		1130	);
		1131
		1132	sub load_extensions {
		1133	cf::sync_job {
		1134	my %todo;
		1135
		1136	for my $path (<$LIBDIR/*.ext>) {
		1137	next unless -r $path;
		1138
		1139	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1140	my $base = $1;
		1141	my $pkg = $1;
		1142	$pkg =~ s/[^[:word:]]/_/g;
		1143	$pkg = "ext::$pkg";
		1144
		1145	open my $fh, "<:utf8", $path
		1146	or die "$path: $!";
		1147
		1148	my $source = do { local $/; <$fh> };
		1149
		1150	my %ext = (
		1151	path => $path,
		1152	base => $base,
		1153	pkg => $pkg,
		1154	);
		1155
		1156	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1157	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1158
		1159	$ext{source} =
		1160	"package $pkg; use strict; use utf8;\n"
		1161	. "#line 1 \"$path\"\n{\n"
		1162	. $source
		1163	. "\n};\n1";
		1164
		1165	$todo{$base} = \%ext;
		1166	}
		1167
		1168	my %done;
		1169	while (%todo) {
		1170	my $progress;
		1171
		1172	while (my ($k, $v) = each %todo) {
		1173	for (split /,\s*/, $v->{meta}{depends}) {
		1174	goto skip
		1175	unless exists $done{$_};
		1176	}
		1177
		1178	warn "... loading '$k' into '$v->{pkg}'\n";
		1179
		1180	unless (eval $v->{source}) {
		1181	my $msg = $@ ? "$v->{path}: $@\n"
		1182	: "$v->{base}: extension inactive.\n";
		1183
		1184	if (exists $v->{meta}{mandatory}) {
		1185	warn $msg;
		1186	warn "mandatory extension failed to load, exiting.\n";
		1187	exit 1;
		1188	}
		1189
		1190	warn $msg;
		1191	}
		1192
		1193	$done{$k} = delete $todo{$k};
		1194	push @EXTS, $v->{pkg};
		1195	$progress = 1;
		1196	}
		1197
		1198	skip:
		1199	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1200	unless $progress;
		1201	}
		1202	};
		1203	}
		1204
		1205	#############################################################################
		1206
		1207	=back
		1208
		1209	=head2 CORE EXTENSIONS
		1210
		1211	Functions and methods that extend core crossfire objects.
		1212
		1213	=cut
		1214
		1215	package cf::player;
		1216
		1217	use Coro::AIO;
		1218
		1219	=head3 cf::player
		1220
		1221	=over 4
		1222
		1223	=item cf::player::find $login
		1224
		1225	Returns the given player object, loading it if necessary (might block).
		1226
		1227	=cut
		1228
		1229	sub playerdir($) {
		1230	"$PLAYERDIR/"
		1231	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1232	}
		1233
		1234	sub path($) {
		1235	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1236
		1237	(playerdir $login) . "/playerdata"
		1238	}
		1239
		1240	sub find_active($) {
		1241	$cf::PLAYER{$_[0]}
		1242	and $cf::PLAYER{$_[0]}->active
		1243	and $cf::PLAYER{$_[0]}
		1244	}
		1245
		1246	sub exists($) {
		1247	my ($login) = @_;
		1248
		1249	$cf::PLAYER{$login}
		1250	or cf::sync_job { !aio_stat path $login }
		1251	}
		1252
		1253	sub find($) {
		1254	return $cf::PLAYER{$_[0]} || do {
		1255	my $login = $_[0];
		1256
		1257	my $guard = cf::lock_acquire "user_find:$login";
		1258
		1259	$cf::PLAYER{$_[0]} || do {
		1260	# rename old playerfiles to new ones
		1261	#TODO: remove when no longer required
		1262	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1263	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1264	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1265	aio_unlink +(playerdir $login) . "/$login.pl";
		1266
		1267	my $pl = load_pl path $login
		1268	or return;
		1269	$cf::PLAYER{$login} = $pl
		1270	}
		1271	}
		1272	}
		1273
		1274	sub save($) {
		1275	my ($pl) = @_;
		1276
		1277	return if $pl->{deny_save};
		1278
		1279	my $path = path $pl;
		1280	my $guard = cf::lock_acquire "user_save:$path";
		1281
		1282	return if $pl->{deny_save};
		1283
		1284	aio_mkdir playerdir $pl, 0770;
		1285	$pl->{last_save} = $cf::RUNTIME;
		1286
		1287	$pl->save_pl ($path);
		1288	Coro::cede;
		1289	}
		1290
		1291	sub new($) {
		1292	my ($login) = @_;
		1293
		1294	my $self = create;
		1295
		1296	$self->ob->name ($login);
		1297	$self->{deny_save} = 1;
		1298
		1299	$cf::PLAYER{$login} = $self;
		1300
		1301	$self
		1302	}
		1303
		1304	=item $pl->quit_character
		1305
		1306	Nukes the player without looking back. If logged in, the connection will
		1307	be destroyed. May block for a long time.
		1308
		1309	=cut
		1310
		1311	sub quit_character {
		1312	my ($pl) = @_;
		1313
		1314	my $name = $pl->ob->name;
		1315
		1316	$pl->{deny_save} = 1;
		1317	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1318
		1319	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1320	$pl->deactivate;
		1321	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1322	$pl->ns->destroy if $pl->ns;
		1323
		1324	my $path = playerdir $pl;
		1325	my $temp = "$path~$cf::RUNTIME~deleting~";
		1326	aio_rename $path, $temp;
		1327	delete $cf::PLAYER{$pl->ob->name};
		1328	$pl->destroy;
		1329
		1330	my $prefix = qr<^~\Q$name\E/>;
		1331
		1332	# nuke player maps
		1333	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1334
		1335	IO::AIO::aio_rmtree $temp;
		1336	}
		1337
		1338	=item $pl->kick
		1339
		1340	Kicks a player out of the game. This destroys the connection.
		1341
		1342	=cut
		1343
		1344	sub kick {
		1345	my ($pl, $kicker) = @_;
		1346
		1347	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1348	$pl->killer ("kicked");
		1349	$pl->ns->destroy;
		1350	}
		1351
		1352	=item cf::player::list_logins
		1353
		1354	Returns am arrayref of all valid playernames in the system, can take a
		1355	while and may block, so not sync_job-capable, ever.
		1356
		1357	=cut
		1358
		1359	sub list_logins {
		1360	my $dirs = aio_readdir $PLAYERDIR
		1361	or return [];
		1362
		1363	my @logins;
		1364
		1365	for my $login (@$dirs) {
		1366	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1367	aio_read $fh, 0, 512, my $buf, 0 or next;
		1368	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1369
		1370	utf8::decode $login;
		1371	push @logins, $login;
		1372	}
		1373
		1374	\@logins
		1375	}
		1376
		1377	=item $player->maps
		1378
		1379	Returns an arrayref of map paths that are private for this
		1380	player. May block.
		1381
		1382	=cut
		1383
		1384	sub maps($) {
		1385	my ($pl) = @_;
		1386
		1387	$pl = ref $pl ? $pl->ob->name : $pl;
		1388
		1389	my $files = aio_readdir playerdir $pl
		1390	or return;
		1391
		1392	my @paths;
		1393
		1394	for (@$files) {
		1395	utf8::decode $_;
		1396	next if /\.(?:pl|pst)$/;
		1397	next unless /^$PATH_SEP/o;
		1398
		1399	push @paths, cf::map::normalise "~$pl/$_";
		1400	}
		1401
		1402	\@paths
		1403	}
		1404
		1405	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1406
		1407	Expand crossfire pod fragments into protocol xml.
		1408
		1409	=cut
		1410
		1411	sub expand_cfpod {
		1412	((my $self), (local $_)) = @_;
		1413
		1414	# escape & and <
		1415	s/&/&amp;/g;
		1416	s/(?<![BIUGH])</&lt;/g;
		1417
		1418	# this is buggy, it needs to properly take care of nested <'s
		1419
		1420	1 while
		1421	# replace B<>, I<>, U<> etc.
		1422	s/B<([^\>]*)>/<b>$1<\/b>/
		1423	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1424	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1425	# replace G<male|female> tags
		1426	|| s{G<([^>|]*)\|([^>]*)>}{
		1427	$self->gender ? $2 : $1
		1428	}ge
		1429	# replace H<hint text>
		1430	|| s{H<([^\>]*)>}
		1431	{
		1432	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1433	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1434	"")
		1435	[$self->{hintmode}]
		1436	}ge;
		1437
		1438	# create single paragraphs (very hackish)
		1439	s/(?<=\S)\n(?=\w)/ /g;
		1440
		1441	# compress some whitespace
		1442	s/\s+\n/\n/g; # ws line-ends
		1443	s/\n\n+/\n/g; # double lines
		1444	s/^\n+//; # beginning lines
		1445	s/\n+$//; # ending lines
		1446
		1447	$_
		1448	}
		1449
		1450	sub hintmode {
		1451	$_[0]{hintmode} = $_[1] if @_ > 1;
		1452	$_[0]{hintmode}
		1453	}
		1454
		1455	=item $player->ext_reply ($msgid, %msg)
		1456
		1457	Sends an ext reply to the player.
		1458
		1459	=cut
		1460
		1461	sub ext_reply($$%) {
		1462	my ($self, $id, %msg) = @_;
		1463
		1464	$msg{msgid} = $id;
		1465	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1466	}
		1467
		1468	=item $player->ext_event ($type, %msg)
		1469
		1470	Sends an ext event to the client.
		1471
		1472	=cut
		1473
		1474	sub ext_event($$%) {
		1475	my ($self, $type, %msg) = @_;
		1476
		1477	$self->ns->ext_event ($type, %msg);
		1478	}
		1479
		1480	=head3 cf::region
		1481
		1482	=over 4
		1483
		1484	=cut
		1485
		1486	package cf::region;
		1487
		1488	=item cf::region::find_by_path $path
		1489
		1490	Tries to decuce the likely region for a map knowing only its path.
		1491
		1492	=cut
		1493
		1494	sub find_by_path($) {
		1495	my ($path) = @_;
		1496
		1497	my ($match, $specificity);
		1498
		1499	for my $region (list) {
		1500	if ($region->{match} && $path =~ $region->{match}) {
		1501	($match, $specificity) = ($region, $region->specificity)
		1502	if $region->specificity > $specificity;
		1503	}
		1504	}
		1505
		1506	$match
		1507	}
		1508
		1509	=back
		1510
		1511	=head3 cf::map
		1512
		1513	=over 4
		1514
		1515	=cut
		1516
		1517	package cf::map;
		1518
		1519	use Fcntl;
		1520	use Coro::AIO;
		1521
		1522	use overload
		1523	'""' => \&as_string,
		1524	fallback => 1;
		1525
		1526	our $MAX_RESET = 3600;
		1527	our $DEFAULT_RESET = 3000;
		1528
		1529	sub generate_random_map {
		1530	my ($self, $rmp) = @_;
		1531	# mit "rum" bekleckern, nicht
		1532	$self->_create_random_map (
		1533	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1534	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1535	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1536	$rmp->{exit_on_final_map},
		1537	$rmp->{xsize}, $rmp->{ysize},
		1538	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1539	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1540	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1541	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1542	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1543	(cf::region::find $rmp->{region}), $rmp->{custom}
		1544	)
		1545	}
		1546
		1547	=item cf::map->register ($regex, $prio)
		1548
		1549	Register a handler for the map path matching the given regex at the
		1550	givne priority (higher is better, built-in handlers have priority 0, the
		1551	default).
		1552
		1553	=cut
137		1554
138	sub register {	1555	sub register {
		1556	my (undef, $regex, $prio) = @_;
		1557	my $pkg = caller;
		1558
		1559	no strict;
		1560	push @{"$pkg\::ISA"}, __PACKAGE__;
		1561
		1562	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1563	}
		1564
		1565	# also paths starting with '/'
		1566	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1567
		1568	sub thawer_merge {
139	my ($base, $pkg) = @_;	1569	my ($self, $merge) = @_;
140		1570
141	for my $idx (0 .. $#EVENT) {	1571	# we have to keep some variables in memory intact
142	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	1572	local $self->{path};
143	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	1573	local $self->{load_path};
144	$hook[$idx]{$base} = $ref;
145	}
146	}
147	}
148		1574
149	sub load_extension {	1575	$self->SUPER::thawer_merge ($merge);
		1576	}
		1577
		1578	sub normalise {
150	my ($path) = @_;	1579	my ($path, $base) = @_;
151		1580
152	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1581	$path = "$path"; # make sure its a string
153	my $base = $1;
154	my $pkg = $1;
155	$pkg =~ s/[^[:word:]]/_/g;
156	$pkg = "cf::ext::$pkg";
157		1582
158	warn "loading '$path' into '$pkg'\n";	1583	$path =~ s/\.map$//;
159		1584
160	open my $fh, "<:utf8", $path	1585	# map plan:
161	or die "$path: $!";	1586	#
		1587	# /! non-realised random map exit (special hack!)
		1588	# {... are special paths that are not being touched
		1589	# ?xxx/... are special absolute paths
		1590	# ?random/... random maps
		1591	# /... normal maps
		1592	# ~user/... per-player map of a specific user
162		1593
163	my $source =	1594	$path =~ s/$PATH_SEP/\//go;
164	"package $pkg; use strict; use utf8;\n"
165	. "#line 1 \"$path\"\n{\n"
166	. (do { local $/; <$fh> })
167	. "\n};\n1";
168		1595
169	eval $source	1596	# treat it as relative path if it starts with
170	or die "$path: $@";	1597	# something that looks reasonable
		1598	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1599	$base or Carp::carp "normalise called with relative path and no base: '$path'";
171		1600
172	push @exts, $pkg;	1601	$base =~ s{[^/]+/?$}{};
173	$ext_pkg{$base} = $pkg;	1602	$path = "$base/$path";
		1603	}
174		1604
175	# no strict 'refs';	1605	for ($path) {
176	# @{"$pkg\::ISA"} = ext::;	1606	redo if s{//}{/};
		1607	redo if s{/\.?/}{/};
		1608	redo if s{/[^/]+/\.\./}{/};
		1609	}
177		1610
178	register $base, $pkg;	1611	$path
179	}	1612	}
180		1613
181	sub unload_extension {	1614	sub new_from_path {
		1615	my (undef, $path, $base) = @_;
		1616
		1617	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1618
		1619	$path = normalise $path, $base;
		1620
		1621	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1622	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1623	my $self = bless cf::map::new, $pkg;
		1624	$self->{path} = $path; $self->path ($path);
		1625	$self->init; # pass $1 etc.
		1626	return $self;
		1627	}
		1628	}
		1629
		1630	Carp::cluck "unable to resolve path '$path' (base '$base').";
		1631	()
		1632	}
		1633
		1634	sub init {
		1635	my ($self) = @_;
		1636
		1637	$self
		1638	}
		1639
		1640	sub as_string {
		1641	my ($self) = @_;
		1642
		1643	"$self->{path}"
		1644	}
		1645
		1646	# the displayed name, this is a one way mapping
		1647	sub visible_name {
		1648	&as_string
		1649	}
		1650
		1651	# the original (read-only) location
		1652	sub load_path {
		1653	my ($self) = @_;
		1654
		1655	"$MAPDIR/$self->{path}.map"
		1656	}
		1657
		1658	# the temporary/swap location
		1659	sub save_path {
		1660	my ($self) = @_;
		1661
		1662	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1663	"$TMPDIR/$path.map"
		1664	}
		1665
		1666	# the unique path, undef == no special unique path
		1667	sub uniq_path {
		1668	my ($self) = @_;
		1669
		1670	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1671	"$UNIQUEDIR/$path"
		1672	}
		1673
		1674	# and all this just because we cannot iterate over
		1675	# all maps in C++...
		1676	sub change_all_map_light {
182	my ($pkg) = @_;	1677	my ($change) = @_;
183		1678
184	warn "removing extension $pkg\n";	1679	$_->change_map_light ($change)
		1680	for grep $_->outdoor, values %cf::MAP;
		1681	}
185		1682
186	if (my $cb = $pkg->can ("on_unload")) {	1683	sub decay_objects {
187	$cb->($pkg);	1684	my ($self) = @_;
		1685
		1686	return if $self->{deny_reset};
		1687
		1688	$self->do_decay_objects;
		1689	}
		1690
		1691	sub unlink_save {
		1692	my ($self) = @_;
		1693
		1694	utf8::encode (my $save = $self->save_path);
		1695	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1696	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1697	}
		1698
		1699	sub load_header_from($) {
		1700	my ($self, $path) = @_;
		1701
		1702	utf8::encode $path;
		1703	#aio_open $path, O_RDONLY, 0
		1704	# or return;
		1705
		1706	$self->_load_header ($path)
		1707	or return;
		1708
		1709	$self->{load_path} = $path;
		1710
188	}	1711	1
		1712	}
189		1713
190	# remove hooks	1714	sub load_header_orig {
191	for my $idx (0 .. $#EVENT) {	1715	my ($self) = @_;
192	delete $hook[$idx]{$pkg};
193	}
194		1716
195	# remove commands	1717	$self->load_header_from ($self->load_path)
196	for my $name (keys %command) {	1718	}
197	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
198		1719
199	if (@cb) {	1720	sub load_header_temp {
200	$command{$name} = \@cb;	1721	my ($self) = @_;
201	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;	1722
		1723	$self->load_header_from ($self->save_path)
		1724	}
		1725
		1726	sub prepare_temp {
		1727	my ($self) = @_;
		1728
		1729	$self->last_access ((delete $self->{last_access})
		1730	|| $cf::RUNTIME); #d#
		1731	# safety
		1732	$self->{instantiate_time} = $cf::RUNTIME
		1733	if $self->{instantiate_time} > $cf::RUNTIME;
		1734	}
		1735
		1736	sub prepare_orig {
		1737	my ($self) = @_;
		1738
		1739	$self->{load_original} = 1;
		1740	$self->{instantiate_time} = $cf::RUNTIME;
		1741	$self->last_access ($cf::RUNTIME);
		1742	$self->instantiate;
		1743	}
		1744
		1745	sub load_header {
		1746	my ($self) = @_;
		1747
		1748	if ($self->load_header_temp) {
		1749	$self->prepare_temp;
202	} else {	1750	} else {
203	delete $command{$name};	1751	$self->load_header_orig
204	delete $COMMAND{"$name\000"};	1752	or return;
205	}	1753	$self->prepare_orig;
		1754	}
		1755
		1756	$self->{deny_reset} = 1
		1757	if $self->no_reset;
		1758
		1759	$self->default_region (cf::region::find_by_path $self->{path})
		1760	unless $self->default_region;
		1761
206	}	1762	1
		1763	}
207		1764
208	# remove extcmds	1765	sub find;
209	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1766	sub find {
210	delete $extcmd{$name};	1767	my ($path, $origin) = @_;
		1768
		1769	$path = normalise $path, $origin && $origin->path;
		1770
		1771	cf::lock_wait "map_find:$path";
		1772
		1773	$cf::MAP{$path} || do {
		1774	my $guard = cf::lock_acquire "map_find:$path";
		1775	my $map = new_from_path cf::map $path
		1776	or return;
		1777
		1778	$map->{last_save} = $cf::RUNTIME;
		1779
		1780	$map->load_header
		1781	or return;
		1782
		1783	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1784	# doing this can freeze the server in a sync job, obviously
		1785	#$cf::WAIT_FOR_TICK->wait;
		1786	$map->reset;
		1787	undef $guard;
		1788	return find $path;
		1789	}
		1790
		1791	$cf::MAP{$path} = $map
		1792	}
		1793	}
		1794
		1795	sub pre_load { }
		1796	sub post_load { }
		1797
		1798	sub load {
		1799	my ($self) = @_;
		1800
		1801	local $self->{deny_reset} = 1; # loading can take a long time
		1802
		1803	my $path = $self->{path};
		1804
211	}	1805	{
		1806	my $guard = cf::lock_acquire "map_load:$path";
212		1807
213	Symbol::delete_package $pkg;	1808	return if $self->in_memory != cf::MAP_SWAPPED;
214	}
215		1809
216	sub load_extensions {	1810	$self->in_memory (cf::MAP_LOADING);
217	my $LIBDIR = maps_directory "perl";
218		1811
219	for my $ext (<$LIBDIR/*.ext>) {	1812	$self->alloc;
220	next unless -r $ext;
221	eval {
222	load_extension $ext;
223	1
224	} or warn "$ext not loaded: $@";
225	}
226	}
227		1813
228	register_command "perl-reload", 0, sub {	1814	$self->pre_load;
229	my ($who, $arg) = @_;	1815	Coro::cede;
230		1816
231	if ($who->flag (FLAG_WIZ)) {	1817	$self->_load_objects ($self->{load_path}, 1)
232	$who->message ("reloading...");	1818	or return;
233		1819
234	warn "reloading...\n";	1820	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
235	eval {	1821	if delete $self->{load_original};
236	# 1. cancel all watchers
237	$_->cancel for Event::all_watchers;
238		1822
239	# 2. unload all extensions	1823	if (my $uniq = $self->uniq_path) {
240	for (@exts) {	1824	utf8::encode $uniq;
241	$who->message ("unloading <$_>");	1825	if (aio_open $uniq, O_RDONLY, 0) {
242	unload_extension $_;	1826	$self->clear_unique_items;
		1827	$self->_load_objects ($uniq, 0);
243	}	1828	}
		1829	}
244		1830
245	# 3. unload all modules loaded from $LIBDIR	1831	Coro::cede;
246	while (my ($k, $v) = each %INC) {	1832	# now do the right thing for maps
247	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1833	$self->link_multipart_objects;
		1834	$self->difficulty ($self->estimate_difficulty)
		1835	unless $self->difficulty;
		1836	Coro::cede;
248		1837
249	$who->message ("removing <$k>");	1838	unless ($self->{deny_activate}) {
250	delete $INC{$k};	1839	$self->decay_objects;
		1840	$self->fix_auto_apply;
		1841	$self->update_buttons;
		1842	Coro::cede;
		1843	$self->set_darkness_map;
		1844	Coro::cede;
		1845	$self->activate;
		1846	}
251		1847
252	$k =~ s/\.pm$//;	1848	$self->in_memory (cf::MAP_IN_MEMORY);
253	$k =~ s/\//::/g;	1849	}
254		1850
255	if (my $cb = $k->can ("unload_module")) {	1851	$self->post_load;
		1852	}
		1853
		1854	sub customise_for {
		1855	my ($self, $ob) = @_;
		1856
		1857	return find "~" . $ob->name . "/" . $self->{path}
		1858	if $self->per_player;
		1859
		1860	# return find "?party/" . $ob->name . "/" . $self->{path}
		1861	# if $self->per_party;
		1862
		1863	$self
		1864	}
		1865
		1866	# find and load all maps in the 3x3 area around a map
		1867	sub load_diag {
		1868	my ($map) = @_;
		1869
		1870	my @diag; # diagonal neighbours
		1871
		1872	for (0 .. 3) {
		1873	my $neigh = $map->tile_path ($_)
		1874	or next;
		1875	$neigh = find $neigh, $map
		1876	or next;
		1877	$neigh->load;
		1878
		1879	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1880	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1881	}
		1882
		1883	for (@diag) {
		1884	my $neigh = find @$_
		1885	or next;
		1886	$neigh->load;
		1887	}
		1888	}
		1889
		1890	sub find_sync {
		1891	my ($path, $origin) = @_;
		1892
		1893	cf::sync_job { find $path, $origin }
		1894	}
		1895
		1896	sub do_load_sync {
		1897	my ($map) = @_;
		1898
		1899	cf::sync_job { $map->load };
		1900	}
		1901
		1902	our %MAP_PREFETCH;
		1903	our $MAP_PREFETCHER = undef;
		1904
		1905	sub find_async {
		1906	my ($path, $origin) = @_;
		1907
		1908	$path = normalise $path, $origin && $origin->{path};
		1909
		1910	if (my $map = $cf::MAP{$path}) {
		1911	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1912	}
		1913
		1914	undef $MAP_PREFETCH{$path};
		1915	$MAP_PREFETCHER ||= cf::async {
		1916	while (%MAP_PREFETCH) {
		1917	for my $path (keys %MAP_PREFETCH) {
		1918	if (my $map = find $path) {
256	$cb->();	1919	$map->load;
257	}	1920	}
258		1921
259	Symbol::delete_package $k;	1922	delete $MAP_PREFETCH{$path};
260	}	1923	}
261
262	# 4. get rid of ext::, as good as possible
263	Symbol::delete_package "ext::$_"
264	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
265
266	# 5. remove register_script_function callbacks
267	# TODO
268
269	# 6. unload cf.pm "a bit"
270	delete $INC{"cf.pm"};
271
272	# don't, removes xs symbols, too
273	#Symbol::delete_package __PACKAGE__;
274
275	# 7. reload cf.pm
276	$who->message ("reloading cf.pm");
277	require cf;
278	};	1924	}
279	warn $@ if $@;	1925	undef $MAP_PREFETCHER;
280	$who->message ($@) if $@;	1926	};
281	warn "reloaded\n";	1927	$MAP_PREFETCHER->prio (6);
282		1928
283	$who->message ("reloaded");	1929	()
		1930	}
		1931
		1932	sub save {
		1933	my ($self) = @_;
		1934
		1935	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1936
		1937	$self->{last_save} = $cf::RUNTIME;
		1938
		1939	return unless $self->dirty;
		1940
		1941	my $save = $self->save_path; utf8::encode $save;
		1942	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1943
		1944	$self->{load_path} = $save;
		1945
		1946	return if $self->{deny_save};
		1947
		1948	local $self->{last_access} = $self->last_access;#d#
		1949
		1950	cf::async {
		1951	$_->contr->save for $self->players;
		1952	};
		1953
		1954	if ($uniq) {
		1955	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1956	$self->_save_objects ($uniq, cf::IO_UNIQUES);
284	} else {	1957	} else {
285	$who->message ("Intruder Alert!");	1958	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
286	}
287	};
288
289	#############################################################################
290	# utility functions
291
292	use JSON::Syck (); # TODO# replace by JSON::PC once working
293
294	sub from_json($) {
295	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
296	JSON::Syck::Load $_[0]
297	}
298
299	sub to_json($) {
300	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
301	JSON::Syck::Dump $_[0]
302	}
303
304	#############################################################################
305	# extcmd framework, basically convert ext <msg>
306	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
307
308	sub on_extcmd {
309	my ($pl, $buf) = @_;
310
311	my $msg = eval { from_json $buf };
312
313	if (ref $msg) {
314	if (my $cb = $extcmd{$msg->{msgtype}}) {
315	if (my %reply = $cb->[0]->($pl, $msg)) {
316	$pl->ext_reply ($msg->{msgid}, %reply);
317	}
318	}
319	} else {
320	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
321	}
322
323	1	1959	}
324	}	1960	}
325		1961
326	#############################################################################	1962	sub swap_out {
327	# load/save/clean perl data associated with a map
328
329	*on_mapclean = sub {
330	my ($map) = @_;	1963	my ($self) = @_;
331		1964
332	my $path = $map->tmpname;	1965	# save first because save cedes
333	defined $path or return;	1966	$self->save;
334		1967
335	unlink "$path.cfperl";	1968	my $lock = cf::lock_acquire "map_data:" . $self->path;
336	};
337		1969
338	*on_mapin =	1970	return if $self->players;
339	*on_mapload = sub {	1971	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1972	return if $self->{deny_save};
		1973
		1974	$self->clear;
		1975	$self->in_memory (cf::MAP_SWAPPED);
		1976	}
		1977
		1978	sub reset_at {
340	my ($map) = @_;	1979	my ($self) = @_;
341		1980
342	my $path = $map->tmpname;	1981	# TODO: safety, remove and allow resettable per-player maps
343	$path = $map->path unless defined $path;	1982	return 1e99 if $self->{deny_reset};
344		1983
345	open my $fh, "<:raw", "$path.cfperl"	1984	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
346	or return; # no perl data	1985	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
347		1986
348	my $data = Storable::thaw do { local $/; <$fh> };	1987	$time + $to
		1988	}
349		1989
350	$data->{version} <= 1	1990	sub should_reset {
351	or return; # too new
352
353	$map->_set_obs ($data->{obs});
354	};
355
356	*on_mapout = sub {
357	my ($map) = @_;	1991	my ($self) = @_;
358		1992
359	my $path = $map->tmpname;	1993	$self->reset_at <= $cf::RUNTIME
360	$path = $map->path unless defined $path;	1994	}
361		1995
362	my $obs = $map->_get_obs;	1996	sub reset {
		1997	my ($self) = @_;
363		1998
364	if (defined $obs) {	1999	my $lock = cf::lock_acquire "map_data:$self->{path}";
365	open my $fh, ">:raw", "$path.cfperl"
366	or die "$path.cfperl: $!";
367		2000
368	stat $path;	2001	return if $self->players;
369		2002
370	print $fh Storable::nfreeze {	2003	warn "resetting map ", $self->path;
371	size => (stat _)[7],
372	time => (stat _)[9],
373	version => 1,
374	obs => $obs,
375	};
376		2004
377	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*	2005	$self->in_memory (cf::MAP_SWAPPED);
378	} else {	2006
379	unlink "$path.cfperl";	2007	# need to save uniques path
		2008	unless ($self->{deny_save}) {
		2009	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2010
		2011	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2012	if $uniq;
		2013	}
		2014
		2015	delete $cf::MAP{$self->path};
		2016
		2017	$self->clear;
		2018
		2019	$_->clear_links_to ($self) for values %cf::MAP;
		2020
		2021	$self->unlink_save;
		2022	$self->destroy;
		2023	}
		2024
		2025	my $nuke_counter = "aaaa";
		2026
		2027	sub nuke {
		2028	my ($self) = @_;
		2029
		2030	delete $cf::MAP{$self->path};
		2031
		2032	$self->unlink_save;
		2033
		2034	bless $self, "cf::map";
		2035	delete $self->{deny_reset};
		2036	$self->{deny_save} = 1;
		2037	$self->reset_timeout (1);
		2038	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2039
		2040	$cf::MAP{$self->path} = $self;
		2041
		2042	$self->reset; # polite request, might not happen
		2043	}
		2044
		2045	=item $maps = cf::map::tmp_maps
		2046
		2047	Returns an arrayref with all map paths of currently instantiated and saved
		2048	maps. May block.
		2049
		2050	=cut
		2051
		2052	sub tmp_maps() {
380	}	2053	[
381	};	2054	map {
382		2055	utf8::decode $_;
383	#############################################################################	2056	/\.map$/
384	# load/save perl data associated with player->ob objects	2057	? normalise $_
385		2058	: ()
386	*on_player_load = sub {	2059	} @{ aio_readdir $TMPDIR or [] }
387	my ($ob, $path) = @_;
388
389	for my $o ($ob, $ob->inv) {
390	if (my $value = $o->get_ob_key_value ("_perl_data")) {
391	$o->set_ob_key_value ("_perl_data");
392
393	%$o = %{ Storable::thaw pack "H*", $value };
394	}
395	}	2060	]
396	};
397
398	*on_player_save = sub {
399	my ($ob, $path) = @_;
400
401	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
402	for grep %$_, $ob, $ob->inv;
403	};
404
405	#############################################################################
406	# core extensions - in perl
407
408	=item cf::player::exists $login
409
410	Returns true when the given account exists.
411
412	=cut
413
414	sub cf::player::exists($) {
415	cf::player::find $_[0]
416	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
417	}	2061	}
418		2062
		2063	=item $maps = cf::map::random_maps
		2064
		2065	Returns an arrayref with all map paths of currently instantiated and saved
		2066	random maps. May block.
		2067
		2068	=cut
		2069
		2070	sub random_maps() {
		2071	[
		2072	map {
		2073	utf8::decode $_;
		2074	/\.map$/
		2075	? normalise "?random/$_"
		2076	: ()
		2077	} @{ aio_readdir $RANDOMDIR or [] }
		2078	]
		2079	}
		2080
		2081	=item cf::map::unique_maps
		2082
		2083	Returns an arrayref of paths of all shared maps that have
		2084	instantiated unique items. May block.
		2085
		2086	=cut
		2087
		2088	sub unique_maps() {
		2089	[
		2090	map {
		2091	utf8::decode $_;
		2092	/\.map$/
		2093	? normalise $_
		2094	: ()
		2095	} @{ aio_readdir $UNIQUEDIR or [] }
		2096	]
		2097	}
		2098
		2099	package cf;
		2100
		2101	=back
		2102
		2103	=head3 cf::object
		2104
		2105	=cut
		2106
		2107	package cf::object;
		2108
		2109	=over 4
		2110
		2111	=item $ob->inv_recursive
		2112
		2113	Returns the inventory of the object _and_ their inventories, recursively.
		2114
		2115	=cut
		2116
		2117	sub inv_recursive_;
		2118	sub inv_recursive_ {
		2119	map { $_, inv_recursive_ $_->inv } @_
		2120	}
		2121
		2122	sub inv_recursive {
		2123	inv_recursive_ inv $_[0]
		2124	}
		2125
		2126	package cf;
		2127
		2128	=back
		2129
		2130	=head3 cf::object::player
		2131
		2132	=over 4
		2133
419	=item $player->reply ($npc, $msg[, $flags])	2134	=item $player_object->reply ($npc, $msg[, $flags])
420		2135
421	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2136	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
422	can be C<undef>. Does the right thing when the player is currently in a	2137	can be C<undef>. Does the right thing when the player is currently in a
423	dialogue with the given NPC character.	2138	dialogue with the given NPC character.
424		2139
425	=cut	2140	=cut
426		2141
427	# rough implementation of a future "reply" method that works	2142	# rough implementation of a future "reply" method that works
428	# with dialog boxes.	2143	# with dialog boxes.
		2144	#TODO: the first argument must go, split into a $npc->reply_to ( method
429	sub cf::object::player::reply($$$;$) {	2145	sub cf::object::player::reply($$$;$) {
430	my ($self, $npc, $msg, $flags) = @_;	2146	my ($self, $npc, $msg, $flags) = @_;
431		2147
432	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2148	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
433		2149
434	if ($self->{record_replies}) {	2150	if ($self->{record_replies}) {
435	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2151	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2152
436	} else {	2153	} else {
		2154	my $pl = $self->contr;
		2155
		2156	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2157	my $diag = $pl->{npc_dialog};
		2158	$diag->{pl}->ext_reply (
		2159	$diag->{id},
		2160	msgtype => "reply",
		2161	msg => $diag->{pl}->expand_cfpod ($msg),
		2162	add_topics => []
		2163	);
		2164
		2165	} else {
437	$msg = $npc->name . " says: $msg" if $npc;	2166	$msg = $npc->name . " says: $msg" if $npc;
438	$self->message ($msg, $flags);	2167	$self->message ($msg, $flags);
		2168	}
		2169	}
		2170	}
		2171
		2172	=item $player_object->may ("access")
		2173
		2174	Returns wether the given player is authorized to access resource "access"
		2175	(e.g. "command_wizcast").
		2176
		2177	=cut
		2178
		2179	sub cf::object::player::may {
		2180	my ($self, $access) = @_;
		2181
		2182	$self->flag (cf::FLAG_WIZ) ||
		2183	(ref $cf::CFG{"may_$access"}
		2184	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2185	: $cf::CFG{"may_$access"})
		2186	}
		2187
		2188	=item $player_object->enter_link
		2189
		2190	Freezes the player and moves him/her to a special map (C<{link}>).
		2191
		2192	The player should be reasonably safe there for short amounts of time. You
		2193	I<MUST> call C<leave_link> as soon as possible, though.
		2194
		2195	Will never block.
		2196
		2197	=item $player_object->leave_link ($map, $x, $y)
		2198
		2199	Moves the player out of the special C<{link}> map onto the specified
		2200	map. If the map is not valid (or omitted), the player will be moved back
		2201	to the location he/she was before the call to C<enter_link>, or, if that
		2202	fails, to the emergency map position.
		2203
		2204	Might block.
		2205
		2206	=cut
		2207
		2208	sub link_map {
		2209	unless ($LINK_MAP) {
		2210	$LINK_MAP = cf::map::find "{link}"
		2211	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2212	$LINK_MAP->load;
		2213	}
		2214
		2215	$LINK_MAP
		2216	}
		2217
		2218	sub cf::object::player::enter_link {
		2219	my ($self) = @_;
		2220
		2221	$self->deactivate_recursive;
		2222
		2223	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2224
		2225	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2226	if $self->map && $self->map->{path} ne "{link}";
		2227
		2228	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2229	}
		2230
		2231	sub cf::object::player::leave_link {
		2232	my ($self, $map, $x, $y) = @_;
		2233
		2234	return unless $self->contr->active;
		2235
		2236	my $link_pos = delete $self->{_link_pos};
		2237
		2238	unless ($map) {
		2239	# restore original map position
		2240	($map, $x, $y) = @{ $link_pos || [] };
		2241	$map = cf::map::find $map;
		2242
		2243	unless ($map) {
		2244	($map, $x, $y) = @$EMERGENCY_POSITION;
		2245	$map = cf::map::find $map
		2246	or die "FATAL: cannot load emergency map\n";
		2247	}
		2248	}
		2249
		2250	($x, $y) = (-1, -1)
		2251	unless (defined $x) && (defined $y);
		2252
		2253	# use -1 or undef as default coordinates, not 0, 0
		2254	($x, $y) = ($map->enter_x, $map->enter_y)
		2255	if $x <=0 && $y <= 0;
		2256
		2257	$map->load;
		2258	$map->load_diag;
		2259
		2260	return unless $self->contr->active;
		2261	$self->activate_recursive;
		2262
		2263	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2264	$self->enter_map ($map, $x, $y);
		2265	}
		2266
		2267	=item $player_object->goto ($path, $x, $y[, $check->($map)[, $done->()]])
		2268
		2269	Moves the player to the given map-path and coordinates by first freezing
		2270	her, loading and preparing them map, calling the provided $check callback
		2271	that has to return the map if sucecssful, and then unfreezes the player on
		2272	the new (success) or old (failed) map position. In either case, $done will
		2273	be called at the end of this process.
		2274
		2275	=cut
		2276
		2277	our $GOTOGEN;
		2278
		2279	sub cf::object::player::goto {
		2280	my ($self, $path, $x, $y, $check, $done) = @_;
		2281
		2282	# do generation counting so two concurrent goto's will be executed in-order
		2283	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2284
		2285	$self->enter_link;
		2286
		2287	(async {
		2288	my $map = eval {
		2289	my $map = cf::map::find $path;
		2290
		2291	if ($map) {
		2292	$map = $map->customise_for ($self);
		2293	$map = $check->($map) if $check && $map;
		2294	} else {
		2295	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2296	}
		2297
		2298	$map
		2299	};
		2300
		2301	if ($@) {
		2302	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2303	LOG llevError | logBacktrace, Carp::longmess $@;
		2304	}
		2305
		2306	if ($gen == $self->{_goto_generation}) {
		2307	delete $self->{_goto_generation};
		2308	$self->leave_link ($map, $x, $y);
		2309	}
		2310
		2311	$done->() if $done;
		2312	})->prio (1);
		2313	}
		2314
		2315	=item $player_object->enter_exit ($exit_object)
		2316
		2317	=cut
		2318
		2319	sub parse_random_map_params {
		2320	my ($spec) = @_;
		2321
		2322	my $rmp = { # defaults
		2323	xsize => (cf::rndm 15, 40),
		2324	ysize => (cf::rndm 15, 40),
		2325	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2326	#layout => string,
439	}	2327	};
440	}
441		2328
442	=item $player->ext_reply ($msgid, $msgtype, %msg)	2329	for (split /\n/, $spec) {
		2330	my ($k, $v) = split /\s+/, $_, 2;
443		2331
		2332	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2333	}
		2334
		2335	$rmp
		2336	}
		2337
		2338	sub prepare_random_map {
		2339	my ($exit) = @_;
		2340
		2341	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2342
		2343	# all this does is basically replace the /! path by
		2344	# a new random map path (?random/...) with a seed
		2345	# that depends on the exit object
		2346
		2347	my $rmp = parse_random_map_params $exit->msg;
		2348
		2349	if ($exit->map) {
		2350	$rmp->{region} = $exit->region->name;
		2351	$rmp->{origin_map} = $exit->map->path;
		2352	$rmp->{origin_x} = $exit->x;
		2353	$rmp->{origin_y} = $exit->y;
		2354	}
		2355
		2356	$rmp->{random_seed} ||= $exit->random_seed;
		2357
		2358	my $data = cf::to_json $rmp;
		2359	my $md5 = Digest::MD5::md5_hex $data;
		2360	my $meta = "$RANDOMDIR/$md5.meta";
		2361
		2362	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2363	aio_write $fh, 0, (length $data), $data, 0;
		2364	undef $fh;
		2365	aio_rename "$meta~", $meta;
		2366
		2367	$exit->slaying ("?random/$md5");
		2368	$exit->msg (undef);
		2369	}
		2370	}
		2371
		2372	sub cf::object::player::enter_exit {
		2373	my ($self, $exit) = @_;
		2374
		2375	return unless $self->type == cf::PLAYER;
		2376
		2377	if ($exit->slaying eq "/!") {
		2378	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2379	# the problem is that $exit might not survive long enough
		2380	# so it needs to be done right now, right here
		2381	cf::sync_job { prepare_random_map $exit };
		2382	}
		2383
		2384	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2385	my $hp = $exit->stats->hp;
		2386	my $sp = $exit->stats->sp;
		2387
		2388	$self->enter_link;
		2389
		2390	# if exit is damned, update players death & WoR home-position
		2391	$self->contr->savebed ($slaying, $hp, $sp)
		2392	if $exit->flag (FLAG_DAMNED);
		2393
		2394	(async {
		2395	$self->deactivate_recursive; # just to be sure
		2396	unless (eval {
		2397	$self->goto ($slaying, $hp, $sp);
		2398
		2399	1;
		2400	}) {
		2401	$self->message ("Something went wrong deep within the crossfire server. "
		2402	. "I'll try to bring you back to the map you were before. "
		2403	. "Please report this to the dungeon master!",
		2404	cf::NDI_UNIQUE | cf::NDI_RED);
		2405
		2406	warn "ERROR in enter_exit: $@";
		2407	$self->leave_link;
		2408	}
		2409	})->prio (1);
		2410	}
		2411
		2412	=head3 cf::client
		2413
		2414	=over 4
		2415
		2416	=item $client->send_drawinfo ($text, $flags)
		2417
		2418	Sends a drawinfo packet to the client. Circumvents output buffering so
		2419	should not be used under normal circumstances.
		2420
		2421	=cut
		2422
		2423	sub cf::client::send_drawinfo {
		2424	my ($self, $text, $flags) = @_;
		2425
		2426	utf8::encode $text;
		2427	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2428	}
		2429
		2430	=item $client->send_msg ($color, $type, $msg, [extra...])
		2431
		2432	Send a drawinfo or msg packet to the client, formatting the msg for the
		2433	client if neccessary. C<$type> should be a string identifying the type of
		2434	the message, with C<log> being the default. If C<$color> is negative, suppress
		2435	the message unless the client supports the msg packet.
		2436
		2437	=cut
		2438
		2439	sub cf::client::send_msg {
		2440	my ($self, $color, $type, $msg, @extra) = @_;
		2441
		2442	$msg = $self->pl->expand_cfpod ($msg);
		2443
		2444	return unless @extra || length $msg;
		2445
		2446	if ($self->can_msg) {
		2447	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2448	} else {
		2449	# replace some tags by gcfclient-compatible ones
		2450	for ($msg) {
		2451	1 while
		2452	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2453	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2454	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2455	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2456	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2457	}
		2458
		2459	if ($color >= 0) {
		2460	if (0 && $msg =~ /\[/) {
		2461	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2462	} else {
		2463	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2464	$self->send_packet ("drawinfo $color $msg")
		2465	}
		2466	}
		2467	}
		2468	}
		2469
		2470	=item $client->ext_event ($type, %msg)
		2471
444	Sends an ext reply to the player.	2472	Sends an ext event to the client.
445		2473
446	=cut	2474	=cut
447		2475
448	sub cf::player::ext_reply($$$%) {	2476	sub cf::client::ext_event($$%) {
449	my ($self, $id, %msg) = @_;	2477	my ($self, $type, %msg) = @_;
450		2478
451	$msg{msgid} = $id;	2479	return unless $self->extcmd;
452		2480
453	$self->send ("ext " . to_json \%msg);	2481	$msg{msgtype} = "event_$type";
		2482	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
454	}	2483	}
455		2484
456	#############################################################################	2485	=item $success = $client->query ($flags, "text", \&cb)
457	# map scripting support
458		2486
		2487	Queues a query to the client, calling the given callback with
		2488	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2489	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2490
		2491	Queries can fail, so check the return code. Or don't, as queries will
		2492	become reliable at some point in the future.
		2493
		2494	=cut
		2495
		2496	sub cf::client::query {
		2497	my ($self, $flags, $text, $cb) = @_;
		2498
		2499	return unless $self->state == ST_PLAYING
		2500	|| $self->state == ST_SETUP
		2501	|| $self->state == ST_CUSTOM;
		2502
		2503	$self->state (ST_CUSTOM);
		2504
		2505	utf8::encode $text;
		2506	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2507
		2508	$self->send_packet ($self->{query_queue}[0][0])
		2509	if @{ $self->{query_queue} } == 1;
		2510
		2511	1
		2512	}
		2513
		2514	cf::client->attach (
		2515	on_connect => sub {
		2516	my ($ns) = @_;
		2517
		2518	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2519	},
		2520	on_reply => sub {
		2521	my ($ns, $msg) = @_;
		2522
		2523	# this weird shuffling is so that direct followup queries
		2524	# get handled first
		2525	my $queue = delete $ns->{query_queue}
		2526	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2527
		2528	(shift @$queue)->[1]->($msg);
		2529	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2530
		2531	push @{ $ns->{query_queue} }, @$queue;
		2532
		2533	if (@{ $ns->{query_queue} } == @$queue) {
		2534	if (@$queue) {
		2535	$ns->send_packet ($ns->{query_queue}[0][0]);
		2536	} else {
		2537	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2538	}
		2539	}
		2540	},
		2541	on_exticmd => sub {
		2542	my ($ns, $buf) = @_;
		2543
		2544	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2545
		2546	if (ref $msg) {
		2547	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2548	if (my %reply = $cb->($ns, $msg)) {
		2549	$reply{msgid} = $msg->{msgid};
		2550	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2551	}
		2552	}
		2553	} else {
		2554	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2555	}
		2556
		2557	cf::override;
		2558	},
		2559	);
		2560
		2561	=item $client->async (\&cb)
		2562
		2563	Create a new coroutine, running the specified callback. The coroutine will
		2564	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2565	or loss of connection).
		2566
		2567	=cut
		2568
		2569	sub cf::client::async {
		2570	my ($self, $cb) = @_;
		2571
		2572	my $coro = &Coro::async ($cb);
		2573
		2574	$coro->on_destroy (sub {
		2575	delete $self->{_coro}{$coro+0};
		2576	});
		2577
		2578	$self->{_coro}{$coro+0} = $coro;
		2579
		2580	$coro
		2581	}
		2582
		2583	cf::client->attach (
		2584	on_destroy => sub {
		2585	my ($ns) = @_;
		2586
		2587	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2588	},
		2589	);
		2590
		2591	=back
		2592
		2593
		2594	=head2 SAFE SCRIPTING
		2595
		2596	Functions that provide a safe environment to compile and execute
		2597	snippets of perl code without them endangering the safety of the server
		2598	itself. Looping constructs, I/O operators and other built-in functionality
		2599	is not available in the safe scripting environment, and the number of
		2600	functions and methods that can be called is greatly reduced.
		2601
		2602	=cut
		2603
459	our $safe = new Safe "ext";	2604	our $safe = new Safe "safe";
460	our $safe_hole = new Safe::Hole;	2605	our $safe_hole = new Safe::Hole;
461		2606
462	$SIG{FPE} = 'IGNORE';	2607	$SIG{FPE} = 'IGNORE';
463		2608
464	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2609	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
465		2610
466	# here we export the classes and methods available to script code	2611	# here we export the classes and methods available to script code
467		2612
		2613	=pod
		2614
		2615	The following functions and methods are available within a safe environment:
		2616
		2617	cf::object
		2618	contr pay_amount pay_player map x y force_find force_add
		2619	insert remove
		2620
		2621	cf::object::player
		2622	player
		2623
		2624	cf::player
		2625	peaceful
		2626
		2627	cf::map
		2628	trigger
		2629
		2630	=cut
		2631
468	for (	2632	for (
469	["cf::object" => qw(contr pay_amount pay_player)],	2633	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2634	insert remove)],
470	["cf::object::player" => qw(player)],	2635	["cf::object::player" => qw(player)],
471	["cf::player" => qw(peaceful)],	2636	["cf::player" => qw(peaceful)],
		2637	["cf::map" => qw(trigger)],
472	) {	2638	) {
473	no strict 'refs';	2639	no strict 'refs';
474	my ($pkg, @funs) = @$_;	2640	my ($pkg, @funs) = @$_;
475	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2641	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
476	for @funs;	2642	for @funs;
477	}	2643	}
		2644
		2645	=over 4
		2646
		2647	=item @retval = safe_eval $code, [var => value, ...]
		2648
		2649	Compiled and executes the given perl code snippet. additional var/value
		2650	pairs result in temporary local (my) scalar variables of the given name
		2651	that are available in the code snippet. Example:
		2652
		2653	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2654
		2655	=cut
478		2656
479	sub safe_eval($;@) {	2657	sub safe_eval($;@) {
480	my ($code, %vars) = @_;	2658	my ($code, %vars) = @_;
481		2659
482	my $qcode = $code;	2660	my $qcode = $code;
483	$qcode =~ s/"/‟/g; # not allowed in #line filenames	2661	$qcode =~ s/"/‟/g; # not allowed in #line filenames
484	$qcode =~ s/\n/\\n/g;	2662	$qcode =~ s/\n/\\n/g;
485		2663
486	local $_;	2664	local $_;
487	local @ext::cf::_safe_eval_args = values %vars;	2665	local @safe::cf::_safe_eval_args = values %vars;
488		2666
489	$code =	2667	my $eval =
490	"do {\n"	2668	"do {\n"
491	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	2669	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
492	. "#line 0 \"{$qcode}\"\n"	2670	. "#line 0 \"{$qcode}\"\n"
493	. $code	2671	. $code
494	. "\n}"	2672	. "\n}"
495	;	2673	;
496		2674
497	sub_generation_inc;	2675	sub_generation_inc;
498	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	2676	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
499	sub_generation_inc;	2677	sub_generation_inc;
500		2678
		2679	if ($@) {
		2680	warn "$@";
		2681	warn "while executing safe code '$code'\n";
		2682	warn "with arguments " . (join " ", %vars) . "\n";
		2683	}
		2684
501	wantarray ? @res : $res[0]	2685	wantarray ? @res : $res[0]
502	}	2686	}
		2687
		2688	=item cf::register_script_function $function => $cb
		2689
		2690	Register a function that can be called from within map/npc scripts. The
		2691	function should be reasonably secure and should be put into a package name
		2692	like the extension.
		2693
		2694	Example: register a function that gets called whenever a map script calls
		2695	C<rent::overview>, as used by the C<rent> extension.
		2696
		2697	cf::register_script_function "rent::overview" => sub {
		2698	...
		2699	};
		2700
		2701	=cut
503		2702
504	sub register_script_function {	2703	sub register_script_function {
505	my ($fun, $cb) = @_;	2704	my ($fun, $cb) = @_;
506		2705
507	no strict 'refs';	2706	no strict 'refs';
508	*{"ext::$fun"} = $safe_hole->wrap ($cb);	2707	*{"safe::$fun"} = $safe_hole->wrap ($cb);
509	}	2708	}
		2709
		2710	=back
		2711
		2712	=cut
510		2713
511	#############################################################################	2714	#############################################################################
512	# initialisation	2715	# the server's init and main functions
513		2716
514	register "<global>", __PACKAGE__;	2717	sub load_facedata($) {
		2718	my ($path) = @_;
		2719
		2720	warn "loading facedata from $path\n";
		2721
		2722	my $facedata;
		2723	0 < aio_load $path, $facedata
		2724	or die "$path: $!";
		2725
		2726	$facedata = Coro::Storable::thaw $facedata;
		2727
		2728	$facedata->{version} == 2
		2729	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2730
		2731	{
		2732	my $faces = $facedata->{faceinfo};
		2733
		2734	while (my ($face, $info) = each %$faces) {
		2735	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2736	cf::face::set_visibility $idx, $info->{visibility};
		2737	cf::face::set_magicmap $idx, $info->{magicmap};
		2738	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2739	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2740
		2741	cf::cede_to_tick;
		2742	}
		2743
		2744	while (my ($face, $info) = each %$faces) {
		2745	next unless $info->{smooth};
		2746	my $idx = cf::face::find $face
		2747	or next;
		2748	if (my $smooth = cf::face::find $info->{smooth}) {
		2749	cf::face::set_smooth $idx, $smooth;
		2750	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2751	} else {
		2752	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2753	}
		2754
		2755	cf::cede_to_tick;
		2756	}
		2757	}
		2758
		2759	{
		2760	my $anims = $facedata->{animinfo};
		2761
		2762	while (my ($anim, $info) = each %$anims) {
		2763	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2764	cf::cede_to_tick;
		2765	}
		2766
		2767	cf::anim::invalidate_all; # d'oh
		2768	}
		2769
		2770	{
		2771	# TODO: for gcfclient pleasure, we should give resources
		2772	# that gcfclient doesn't grok a >10000 face index.
		2773	my $res = $facedata->{resource};
		2774	my $enc = JSON::XS->new->utf8->canonical;
		2775
		2776	while (my ($name, $info) = each %$res) {
		2777	my $meta = $enc->encode ({
		2778	name => $name,
		2779	type => $info->{type},
		2780	copyright => $info->{copyright}, #TODO#
		2781	});
		2782
		2783	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2784
		2785	if ($name =~ /\.jpg$/) {
		2786	cf::face::set_data $idx, 0, $info->{data}, $info->{chksum};#d# temp hack
		2787	cf::face::set_data $idx, 1, $info->{data}, $info->{chksum};#d# temp hack
		2788	} else {
		2789	my $data = pack "(w/a*)*", $meta, $info->{data};
		2790	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2791
		2792	cf::face::set_type $idx, 1;
		2793	cf::face::set_data $idx, 0, $data, $chk;
		2794	}
		2795
		2796	cf::cede_to_tick;
		2797	}
		2798	}
		2799
		2800	1
		2801	}
		2802
		2803	sub reload_regions {
		2804	load_resource_file "$MAPDIR/regions"
		2805	or die "unable to load regions file\n";
		2806
		2807	for (cf::region::list) {
		2808	$_->{match} = qr/$_->{match}/
		2809	if exists $_->{match};
		2810	}
		2811	}
		2812
		2813	sub reload_facedata {
		2814	load_facedata "$DATADIR/facedata"
		2815	or die "unable to load facedata\n";
		2816	}
		2817
		2818	sub reload_archetypes {
		2819	load_resource_file "$DATADIR/archetypes"
		2820	or die "unable to load archetypes\n";
		2821	#d# NEED to laod twice to resolve forward references
		2822	# this really needs to be done in an extra post-pass
		2823	# (which needs to be synchronous, so solve it differently)
		2824	load_resource_file "$DATADIR/archetypes"
		2825	or die "unable to load archetypes\n";
		2826	}
		2827
		2828	sub reload_treasures {
		2829	load_resource_file "$DATADIR/treasures"
		2830	or die "unable to load treasurelists\n";
		2831	}
		2832
		2833	sub reload_resources {
		2834	warn "reloading resource files...\n";
		2835
		2836	reload_regions;
		2837	reload_facedata;
		2838	#reload_archetypes;#d#
		2839	reload_archetypes;
		2840	reload_treasures;
		2841
		2842	warn "finished reloading resource files\n";
		2843	}
		2844
		2845	sub init {
		2846	reload_resources;
		2847	}
		2848
		2849	sub cfg_load {
		2850	open my $fh, "<:utf8", "$CONFDIR/config"
		2851	or return;
		2852
		2853	local $/;
		2854	*CFG = YAML::Syck::Load <$fh>;
		2855
		2856	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2857
		2858	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2859	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2860
		2861	if (exists $CFG{mlockall}) {
		2862	eval {
		2863	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2864	and die "WARNING: m(un)lockall failed: $!\n";
		2865	};
		2866	warn $@ if $@;
		2867	}
		2868	}
		2869
		2870	sub main {
		2871	# we must not ever block the main coroutine
		2872	local $Coro::idle = sub {
		2873	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2874	(async {
		2875	Event::one_event;
		2876	})->prio (Coro::PRIO_MAX);
		2877	};
		2878
		2879	cfg_load;
		2880	db_init;
		2881	load_extensions;
		2882
		2883	$TICK_WATCHER->start;
		2884	Event::loop;
		2885	}
		2886
		2887	#############################################################################
		2888	# initialisation and cleanup
		2889
		2890	# install some emergency cleanup handlers
		2891	BEGIN {
		2892	for my $signal (qw(INT HUP TERM)) {
		2893	Event->signal (
		2894	reentrant => 0,
		2895	data => WF_AUTOCANCEL,
		2896	signal => $signal,
		2897	prio => 0,
		2898	cb => sub {
		2899	cf::cleanup "SIG$signal";
		2900	},
		2901	);
		2902	}
		2903	}
		2904
		2905	sub write_runtime {
		2906	my $runtime = "$LOCALDIR/runtime";
		2907
		2908	# first touch the runtime file to show we are still running:
		2909	# the fsync below can take a very very long time.
		2910
		2911	IO::AIO::aio_utime $runtime, undef, undef;
		2912
		2913	my $guard = cf::lock_acquire "write_runtime";
		2914
		2915	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2916	or return;
		2917
		2918	my $value = $cf::RUNTIME + 90 + 10;
		2919	# 10 is the runtime save interval, for a monotonic clock
		2920	# 60 allows for the watchdog to kill the server.
		2921
		2922	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2923	and return;
		2924
		2925	# always fsync - this file is important
		2926	aio_fsync $fh
		2927	and return;
		2928
		2929	# touch it again to show we are up-to-date
		2930	aio_utime $fh, undef, undef;
		2931
		2932	close $fh
		2933	or return;
		2934
		2935	aio_rename "$runtime~", $runtime
		2936	and return;
		2937
		2938	warn "runtime file written.\n";
		2939
		2940	1
		2941	}
		2942
		2943	sub emergency_save() {
		2944	my $freeze_guard = cf::freeze_mainloop;
		2945
		2946	warn "enter emergency perl save\n";
		2947
		2948	cf::sync_job {
		2949	# use a peculiar iteration method to avoid tripping on perl
		2950	# refcount bugs in for. also avoids problems with players
		2951	# and maps saved/destroyed asynchronously.
		2952	warn "begin emergency player save\n";
		2953	for my $login (keys %cf::PLAYER) {
		2954	my $pl = $cf::PLAYER{$login} or next;
		2955	$pl->valid or next;
		2956	$pl->save;
		2957	}
		2958	warn "end emergency player save\n";
		2959
		2960	warn "begin emergency map save\n";
		2961	for my $path (keys %cf::MAP) {
		2962	my $map = $cf::MAP{$path} or next;
		2963	$map->valid or next;
		2964	$map->save;
		2965	}
		2966	warn "end emergency map save\n";
		2967
		2968	warn "begin emergency database checkpoint\n";
		2969	BDB::db_env_txn_checkpoint $DB_ENV;
		2970	warn "end emergency database checkpoint\n";
		2971	};
		2972
		2973	warn "leave emergency perl save\n";
		2974	}
		2975
		2976	sub post_cleanup {
		2977	my ($make_core) = @_;
		2978
		2979	warn Carp::longmess "post_cleanup backtrace"
		2980	if $make_core;
		2981	}
		2982
		2983	sub do_reload_perl() {
		2984	# can/must only be called in main
		2985	if ($Coro::current != $Coro::main) {
		2986	warn "can only reload from main coroutine";
		2987	return;
		2988	}
		2989
		2990	warn "reloading...";
		2991
		2992	warn "entering sync_job";
		2993
		2994	cf::sync_job {
		2995	cf::write_runtime; # external watchdog should not bark
		2996	cf::emergency_save;
		2997	cf::write_runtime; # external watchdog should not bark
		2998
		2999	warn "syncing database to disk";
		3000	BDB::db_env_txn_checkpoint $DB_ENV;
		3001
		3002	# if anything goes wrong in here, we should simply crash as we already saved
		3003
		3004	warn "cancelling all WF_AUTOCANCEL watchers";
		3005	for (Event::all_watchers) {
		3006	$_->cancel if $_->data & WF_AUTOCANCEL;
		3007	}
		3008
		3009	warn "flushing outstanding aio requests";
		3010	for (;;) {
		3011	BDB::flush;
		3012	IO::AIO::flush;
		3013	Coro::cede;
		3014	last unless IO::AIO::nreqs || BDB::nreqs;
		3015	warn "iterate...";
		3016	}
		3017
		3018	++$RELOAD;
		3019
		3020	warn "cancelling all extension coros";
		3021	$_->cancel for values %EXT_CORO;
		3022	%EXT_CORO = ();
		3023
		3024	warn "removing commands";
		3025	%COMMAND = ();
		3026
		3027	warn "removing ext/exti commands";
		3028	%EXTCMD = ();
		3029	%EXTICMD = ();
		3030
		3031	warn "unloading/nuking all extensions";
		3032	for my $pkg (@EXTS) {
		3033	warn "... unloading $pkg";
		3034
		3035	if (my $cb = $pkg->can ("unload")) {
		3036	eval {
		3037	$cb->($pkg);
		3038	1
		3039	} or warn "$pkg unloaded, but with errors: $@";
		3040	}
		3041
		3042	warn "... nuking $pkg";
		3043	Symbol::delete_package $pkg;
		3044	}
		3045
		3046	warn "unloading all perl modules loaded from $LIBDIR";
		3047	while (my ($k, $v) = each %INC) {
		3048	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3049
		3050	warn "... unloading $k";
		3051	delete $INC{$k};
		3052
		3053	$k =~ s/\.pm$//;
		3054	$k =~ s/\//::/g;
		3055
		3056	if (my $cb = $k->can ("unload_module")) {
		3057	$cb->();
		3058	}
		3059
		3060	Symbol::delete_package $k;
		3061	}
		3062
		3063	warn "getting rid of safe::, as good as possible";
		3064	Symbol::delete_package "safe::$_"
		3065	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3066
		3067	warn "unloading cf.pm \"a bit\"";
		3068	delete $INC{"cf.pm"};
		3069	delete $INC{"cf/pod.pm"};
		3070
		3071	# don't, removes xs symbols, too,
		3072	# and global variables created in xs
		3073	#Symbol::delete_package __PACKAGE__;
		3074
		3075	warn "unload completed, starting to reload now";
		3076
		3077	warn "reloading cf.pm";
		3078	require cf;
		3079	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		3080
		3081	warn "loading config and database again";
		3082	cf::cfg_load;
		3083
		3084	warn "loading extensions";
		3085	cf::load_extensions;
		3086
		3087	warn "reattaching attachments to objects/players";
		3088	_global_reattach; # objects, sockets
		3089	warn "reattaching attachments to maps";
		3090	reattach $_ for values %MAP;
		3091	warn "reattaching attachments to players";
		3092	reattach $_ for values %PLAYER;
		3093
		3094	warn "leaving sync_job";
		3095
		3096	1
		3097	} or do {
		3098	warn $@;
		3099	warn "error while reloading, exiting.";
		3100	exit 1;
		3101	};
		3102
		3103	warn "reloaded";
		3104	};
		3105
		3106	our $RELOAD_WATCHER; # used only during reload
		3107
		3108	sub reload_perl() {
		3109	# doing reload synchronously and two reloads happen back-to-back,
		3110	# coro crashes during coro_state_free->destroy here.
		3111
		3112	$RELOAD_WATCHER ||= Event->timer (
		3113	reentrant => 0,
		3114	after => 0,
		3115	data => WF_AUTOCANCEL,
		3116	cb => sub {
		3117	do_reload_perl;
		3118	undef $RELOAD_WATCHER;
		3119	},
		3120	);
		3121	}
		3122
		3123	register_command "reload" => sub {
		3124	my ($who, $arg) = @_;
		3125
		3126	if ($who->flag (FLAG_WIZ)) {
		3127	$who->message ("reloading server.");
		3128	async { reload_perl };
		3129	}
		3130	};
515		3131
516	unshift @INC, $LIBDIR;	3132	unshift @INC, $LIBDIR;
517		3133
518	load_extensions;	3134	my $bug_warning = 0;
		3135
		3136	our @WAIT_FOR_TICK;
		3137	our @WAIT_FOR_TICK_BEGIN;
		3138
		3139	sub wait_for_tick {
		3140	return unless $TICK_WATCHER->is_active;
		3141	return if $Coro::current == $Coro::main;
		3142
		3143	my $signal = new Coro::Signal;
		3144	push @WAIT_FOR_TICK, $signal;
		3145	$signal->wait;
		3146	}
		3147
		3148	sub wait_for_tick_begin {
		3149	return unless $TICK_WATCHER->is_active;
		3150	return if $Coro::current == $Coro::main;
		3151
		3152	my $signal = new Coro::Signal;
		3153	push @WAIT_FOR_TICK_BEGIN, $signal;
		3154	$signal->wait;
		3155	}
		3156
		3157	my $min = 1e6;#d#
		3158	my $avg = 10;
		3159	$TICK_WATCHER = Event->timer (
		3160	reentrant => 0,
		3161	parked => 1,
		3162	prio => 0,
		3163	at => $NEXT_TICK || $TICK,
		3164	data => WF_AUTOCANCEL,
		3165	cb => sub {
		3166	if ($Coro::current != $Coro::main) {
		3167	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3168	unless ++$bug_warning > 10;
		3169	return;
		3170	}
		3171
		3172	$NOW = $tick_start = Event::time;
		3173
		3174	cf::server_tick; # one server iteration
		3175
		3176	0 && sync_job {#d#
		3177	for(1..10) {
		3178	my $t = Event::time;
		3179	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3180	or die;
		3181
		3182	$map->width (50);
		3183	$map->height (50);
		3184	$map->alloc;
		3185	$map->_load_objects ("/tmp/x.map", 1);
		3186	my $t = Event::time - $t;
		3187
		3188	#next unless $t < 0.0013;#d#
		3189	if ($t < $min) {
		3190	$min = $t;
		3191	}
		3192	$avg = $avg * 0.99 + $t * 0.01;
		3193	}
		3194	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3195	exit 0;
		3196	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3197	};
		3198
		3199	$RUNTIME += $TICK;
		3200	$NEXT_TICK += $TICK;
		3201
		3202	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3203	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3204	Coro::async_pool {
		3205	write_runtime
		3206	or warn "ERROR: unable to write runtime file: $!";
		3207	};
		3208	}
		3209
		3210	# my $AFTER = Event::time;
		3211	# warn $AFTER - $NOW;#d#
		3212
		3213	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3214	$sig->send;
		3215	}
		3216	while (my $sig = shift @WAIT_FOR_TICK) {
		3217	$sig->send;
		3218	}
		3219
		3220	$NOW = Event::time;
		3221
		3222	# if we are delayed by four ticks or more, skip them all
		3223	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		3224
		3225	$TICK_WATCHER->at ($NEXT_TICK);
		3226	$TICK_WATCHER->start;
		3227
		3228	$LOAD = ($NOW - $tick_start) / $TICK;
		3229	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3230
		3231	_post_tick;
		3232
		3233
		3234	},
		3235	);
		3236
		3237	{
		3238	BDB::max_poll_time $TICK * 0.1;
		3239	$BDB_POLL_WATCHER = Event->io (
		3240	reentrant => 0,
		3241	fd => BDB::poll_fileno,
		3242	poll => 'r',
		3243	prio => 0,
		3244	data => WF_AUTOCANCEL,
		3245	cb => \&BDB::poll_cb,
		3246	);
		3247	BDB::min_parallel 8;
		3248
		3249	BDB::set_sync_prepare {
		3250	my $status;
		3251	my $current = $Coro::current;
		3252	(
		3253	sub {
		3254	$status = $!;
		3255	$current->ready; undef $current;
		3256	},
		3257	sub {
		3258	Coro::schedule while defined $current;
		3259	$! = $status;
		3260	},
		3261	)
		3262	};
		3263
		3264	unless ($DB_ENV) {
		3265	$DB_ENV = BDB::db_env_create;
		3266
		3267	cf::sync_job {
		3268	eval {
		3269	BDB::db_env_open
		3270	$DB_ENV,
		3271	$BDBDIR,
		3272	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3273	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3274	0666;
		3275
		3276	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3277
		3278	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3279	$DB_ENV->set_lk_detect;
		3280	};
		3281
		3282	cf::cleanup "db_env_open(db): $@" if $@;
		3283	};
		3284	}
		3285	}
		3286
		3287	{
		3288	IO::AIO::min_parallel 8;
		3289
		3290	undef $Coro::AIO::WATCHER;
		3291	IO::AIO::max_poll_time $TICK * 0.1;
		3292	$AIO_POLL_WATCHER = Event->io (
		3293	reentrant => 0,
		3294	data => WF_AUTOCANCEL,
		3295	fd => IO::AIO::poll_fileno,
		3296	poll => 'r',
		3297	prio => 6,
		3298	cb => \&IO::AIO::poll_cb,
		3299	);
		3300	}
		3301
		3302	my $_log_backtrace;
		3303
		3304	sub _log_backtrace {
		3305	my ($msg, @addr) = @_;
		3306
		3307	$msg =~ s/\n//;
		3308
		3309	# limit the # of concurrent backtraces
		3310	if ($_log_backtrace < 2) {
		3311	++$_log_backtrace;
		3312	async {
		3313	my @bt = fork_call {
		3314	@addr = map { sprintf "%x", $_ } @addr;
		3315	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3316	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3317	or die "addr2line: $!";
		3318
		3319	my @funcs;
		3320	my @res = <$fh>;
		3321	chomp for @res;
		3322	while (@res) {
		3323	my ($func, $line) = splice @res, 0, 2, ();
		3324	push @funcs, "[$func] $line";
		3325	}
		3326
		3327	@funcs
		3328	};
		3329
		3330	LOG llevInfo, "[ABT] $msg\n";
		3331	LOG llevInfo, "[ABT] $_\n" for @bt;
		3332	--$_log_backtrace;
		3333	};
		3334	} else {
		3335	LOG llevInfo, "[ABT] $msg\n";
		3336	LOG llevInfo, "[ABT] [suppressed]\n";
		3337	}
		3338	}
		3339
		3340	# load additional modules
		3341	use cf::pod;
		3342
		3343	END { cf::emergency_save }
519		3344
520	1	3345	1
521		3346

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