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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.93 by root, Thu Dec 21 22:41:35 2006 UTC vs.
Revision 1.302 by root, Tue Jul 10 16:23:59 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
10	use IO::AIO ();	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use JSON::XS 1.4 ();
		26	use BDB ();
		27	use Data::Dumper;
		28	use Digest::MD5;
		29	use Fcntl;
11	use YAML::Syck ();	30	use YAML::Syck ();
		31	use IO::AIO 2.32 ();
12	use Time::HiRes;	32	use Time::HiRes;
13	use Event;	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
14	$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
15		43
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	44	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	45	$YAML::Syck::ImplicitUnicode = 1;
18		46
19	use strict;	47	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		48
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	49	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		50
23	our %COMMAND = ();	51	our %COMMAND = ();
24	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
		53
		54	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
		57	our %EXT_CORO = (); # coroutines bound to extensions
		58	our %EXT_MAP = (); # pluggable maps
26		59
27	_init_vars;	60	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	61	our @EVENT;
30	our $LIBDIR = datadir . "/ext";
31		62
32	our $TICK = MAX_TIME * 1e-6;	63	our $CONFDIR = confdir;
		64	our $DATADIR = datadir;
		65	our $LIBDIR = "$DATADIR/ext";
		66	our $PODDIR = "$DATADIR/pod";
		67	our $MAPDIR = "$DATADIR/" . mapdir;
		68	our $LOCALDIR = localdir;
		69	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		70	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		71	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		72	our $RANDOMDIR = "$LOCALDIR/random";
		73	our $BDBDIR = "$LOCALDIR/db";
		74
		75	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
33	our $TICK_WATCHER;	76	our $TICK_WATCHER;
		77	our $AIO_POLL_WATCHER;
		78	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	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;
35		85
36	our %CFG;	86	our %CFG;
37		87
38	our $UPTIME; $UPTIME ||= time;	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;
39		118
40	#############################################################################	119	#############################################################################
41		120
42	=head2 GLOBAL VARIABLES	121	=head2 GLOBAL VARIABLES
43		122
…		…
45		124
46	=item $cf::UPTIME	125	=item $cf::UPTIME
47		126
48	The timestamp of the server start (so not actually an uptime).	127	The timestamp of the server start (so not actually an uptime).
49		128
50	=item $cf::LIBDIR	129	=item $cf::RUNTIME
51		130
52	The perl library directory, where extensions and cf-specific modules can	131	The time this server has run, starts at 0 and is increased by $cf::TICK on
53	be found. It will be added to C<@INC> automatically.	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.
54		146
55	=item $cf::TICK	147	=item $cf::TICK
56		148
57	The interval between server ticks, in seconds.	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.
58		160
59	=item %cf::CFG	161	=item %cf::CFG
60		162
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	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.
63		171
64	=back	172	=back
65		173
66	=cut	174	=cut
67		175
68	BEGIN {	176	BEGIN {
69	*CORE::GLOBAL::warn = sub {	177	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	178	my $msg = join "", @_;
		179
71	$msg .= "\n"	180	$msg .= "\n"
72	unless $msg =~ /\n$/;	181	unless $msg =~ /\n$/;
73		182
74	print STDERR "cfperl: $msg";	183	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		184
		185	utf8::encode $msg;
75	LOG llevError, "cfperl: $msg";	186	LOG llevError, $msg;
76	};	187	};
77	}	188	}
78		189
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	190	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	191	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	192	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	193	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	194	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		195	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	196	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
85		197
86	# we bless all objects into (empty) derived classes to force a method lookup	198	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	199	# within the Safe compartment.
88	for my $pkg (qw(	200	for my $pkg (qw(
89	cf::global	201	cf::global cf::attachable
90	cf::object cf::object::player	202	cf::object cf::object::player
91	cf::client cf::player	203	cf::client cf::player
92	cf::arch cf::living	204	cf::arch cf::living
93	cf::map cf::party cf::region	205	cf::map cf::party cf::region
94	)) {	206	)) {
…		…
98		210
99	$Event::DIED = sub {	211	$Event::DIED = sub {
100	warn "error in event callback: @_";	212	warn "error in event callback: @_";
101	};	213	};
102		214
103	my %ext_pkg;	215	#############################################################################
104	my @exts;
105	my @hook;
106		216
107	=head2 UTILITY FUNCTIONS	217	=head2 UTILITY FUNCTIONS
108		218
109	=over 4	219	=over 4
110		220
111	=cut	221	=item dumpval $ref
112		222
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	223	=cut
		224
		225	sub dumpval {
		226	eval {
		227	local $SIG{__DIE__};
		228	my $d;
		229	if (1) {
		230	$d = new Data::Dumper([$_[0]], ["*var"]);
		231	$d->Terse(1);
		232	$d->Indent(2);
		233	$d->Quotekeys(0);
		234	$d->Useqq(1);
		235	#$d->Bless(...);
		236	$d->Seen($_[1]) if @_ > 1;
		237	$d = $d->Dump();
		238	}
		239	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		240	$d
		241	} || "[unable to dump $_[0]: '$@']";
		242	}
114		243
115	=item $ref = cf::from_json $json	244	=item $ref = cf::from_json $json
116		245
117	Converts a JSON string into the corresponding perl data structure.	246	Converts a JSON string into the corresponding perl data structure.
118		247
119	=cut
120
121	sub from_json($) {
122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
123	JSON::Syck::Load $_[0]
124	}
125
126	=item $json = cf::to_json $ref	248	=item $json = cf::to_json $ref
127		249
128	Converts a perl data structure into its JSON representation.	250	Converts a perl data structure into its JSON representation.
129		251
130	=cut	252	=cut
131		253
132	sub to_json($) {	254	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	255
134	JSON::Syck::Dump $_[0]	256	sub to_json ($) { $json_coder->encode ($_[0]) }
		257	sub from_json ($) { $json_coder->decode ($_[0]) }
		258
		259	=item cf::lock_wait $string
		260
		261	Wait until the given lock is available. See cf::lock_acquire.
		262
		263	=item my $lock = cf::lock_acquire $string
		264
		265	Wait until the given lock is available and then acquires it and returns
		266	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		267	for example when the coroutine gets canceled), the lock is automatically
		268	returned.
		269
		270	Lock names should begin with a unique identifier (for example, cf::map::find
		271	uses map_find and cf::map::load uses map_load).
		272
		273	=item $locked = cf::lock_active $string
		274
		275	Return true if the lock is currently active, i.e. somebody has locked it.
		276
		277	=cut
		278
		279	our %LOCK;
		280
		281	sub lock_wait($) {
		282	my ($key) = @_;
		283
		284	# wait for lock, if any
		285	while ($LOCK{$key}) {
		286	push @{ $LOCK{$key} }, $Coro::current;
		287	Coro::schedule;
		288	}
		289	}
		290
		291	sub lock_acquire($) {
		292	my ($key) = @_;
		293
		294	# wait, to be sure we are not locked
		295	lock_wait $key;
		296
		297	$LOCK{$key} = [];
		298
		299	Coro::guard {
		300	# wake up all waiters, to be on the safe side
		301	$_->ready for @{ delete $LOCK{$key} };
		302	}
		303	}
		304
		305	sub lock_active($) {
		306	my ($key) = @_;
		307
		308	! ! $LOCK{$key}
		309	}
		310
		311	sub freeze_mainloop {
		312	return unless $TICK_WATCHER->is_active;
		313
		314	my $guard = Coro::guard {
		315	$TICK_WATCHER->start;
		316	};
		317	$TICK_WATCHER->stop;
		318	$guard
		319	}
		320
		321	=item cf::async { BLOCK }
		322
		323	Currently the same as Coro::async_pool, meaning you cannot use
		324	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		325	thing you are allowed to do is call C<prio> on it.
		326
		327	=cut
		328
		329	BEGIN { *async = \&Coro::async_pool }
		330
		331	=item cf::sync_job { BLOCK }
		332
		333	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		334	is always able to handle events or runnable, as Crossfire TRT is only
		335	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		336	acceptable.
		337
		338	If it must be done, put the blocking parts into C<sync_job>. This will run
		339	the given BLOCK in another coroutine while waiting for the result. The
		340	server will be frozen during this time, so the block should either finish
		341	fast or be very important.
		342
		343	=cut
		344
		345	sub sync_job(&) {
		346	my ($job) = @_;
		347
		348	if ($Coro::current == $Coro::main) {
		349	my $time = Event::time;
		350
		351	# this is the main coro, too bad, we have to block
		352	# till the operation succeeds, freezing the server :/
		353
		354	# TODO: use suspend/resume instead
		355	# (but this is cancel-safe)
		356	my $freeze_guard = freeze_mainloop;
		357
		358	my $busy = 1;
		359	my @res;
		360
		361	(async {
		362	@res = eval { $job->() };
		363	warn $@ if $@;
		364	undef $busy;
		365	})->prio (Coro::PRIO_MAX);
		366
		367	while ($busy) {
		368	Coro::cede or Event::one_event;
		369	}
		370
		371	$time = Event::time - $time;
		372
		373	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		374	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		375
		376	$tick_start += $time; # do not account sync jobs to server load
		377
		378	wantarray ? @res : $res[0]
		379	} else {
		380	# we are in another coroutine, how wonderful, everything just works
		381
		382	$job->()
		383	}
		384	}
		385
		386	=item $coro = cf::async_ext { BLOCK }
		387
		388	Like async, but this coro is automatically being canceled when the
		389	extension calling this is being unloaded.
		390
		391	=cut
		392
		393	sub async_ext(&) {
		394	my $cb = shift;
		395
		396	my $coro = &Coro::async ($cb);
		397
		398	$coro->on_destroy (sub {
		399	delete $EXT_CORO{$coro+0};
		400	});
		401	$EXT_CORO{$coro+0} = $coro;
		402
		403	$coro
		404	}
		405
		406	=item fork_call { }, $args
		407
		408	Executes the given code block with the given arguments in a seperate
		409	process, returning the results. Everything must be serialisable with
		410	Coro::Storable. May, of course, block. Note that the executed sub may
		411	never block itself or use any form of Event handling.
		412
		413	=cut
		414
		415	sub _store_scalar {
		416	open my $fh, ">", \my $buf
		417	or die "fork_call: cannot open fh-to-buf in child : $!";
		418	Storable::store_fd $_[0], $fh;
		419	close $fh;
		420
		421	$buf
		422	}
		423
		424	sub fork_call(&@) {
		425	my ($cb, @args) = @_;
		426
		427	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		428	# or die "socketpair: $!";
		429	pipe my $fh1, my $fh2
		430	or die "pipe: $!";
		431
		432	if (my $pid = fork) {
		433	close $fh2;
		434
		435	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		436	warn "pst<$res>" unless $res =~ /^pst/;
		437	$res = Coro::Storable::thaw $res;
		438
		439	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		440
		441	Carp::confess $$res unless "ARRAY" eq ref $res;
		442
		443	return wantarray ? @$res : $res->[-1];
		444	} else {
		445	reset_signals;
		446	local $SIG{__WARN__};
		447	local $SIG{__DIE__};
		448	# just in case, this hack effectively disables event
		449	# in the child. cleaner and slower would be canceling all watchers,
		450	# but this works for the time being.
		451	local $Coro::idle;
		452	$Coro::current->prio (Coro::PRIO_MAX);
		453
		454	eval {
		455	close $fh1;
		456
		457	my @res = eval { $cb->(@args) };
		458
		459	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		460	close $fh2;
		461	};
		462
		463	warn $@ if $@;
		464	_exit 0;
		465	}
		466	}
		467
		468	=item $value = cf::db_get $family => $key
		469
		470	Returns a single value from the environment database.
		471
		472	=item cf::db_put $family => $key => $value
		473
		474	Stores the given C<$value> in the family. It can currently store binary
		475	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		476
		477	=cut
		478
		479	our $DB;
		480
		481	sub db_init {
		482	unless ($DB) {
		483	$DB = BDB::db_create $DB_ENV;
		484
		485	cf::sync_job {
		486	eval {
		487	$DB->set_flags (BDB::CHKSUM);
		488
		489	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		490	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		491	cf::cleanup "db_open(db): $!" if $!;
		492	};
		493	cf::cleanup "db_open(db): $@" if $@;
		494	};
		495	}
		496	}
		497
		498	sub db_get($$) {
		499	my $key = "$_[0]/$_[1]";
		500
		501	cf::sync_job {
		502	BDB::db_get $DB, undef, $key, my $data;
		503
		504	$! ? ()
		505	: $data
		506	}
		507	}
		508
		509	sub db_put($$$) {
		510	BDB::dbreq_pri 4;
		511	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		512	}
		513
		514	=item cf::cache $id => [$paths...], $processversion => $process
		515
		516	Generic caching function that returns the value of the resource $id,
		517	caching and regenerating as required.
		518
		519	This function can block.
		520
		521	=cut
		522
		523	sub cache {
		524	my ($id, $src, $processversion, $process) = @_;
		525
		526	my $meta =
		527	join "\x00",
		528	$processversion,
		529	map {
		530	aio_stat $_
		531	and Carp::croak "$_: $!";
		532
		533	($_, (stat _)[7,9])
		534	} @$src;
		535
		536	my $dbmeta = db_get cache => "$id/meta";
		537	if ($dbmeta ne $meta) {
		538	# changed, we may need to process
		539
		540	my @data;
		541	my $md5;
		542
		543	for (0 .. $#$src) {
		544	0 <= aio_load $src->[$_], $data[$_]
		545	or Carp::croak "$src->[$_]: $!";
		546	}
		547
		548	# if processing is expensive, check
		549	# checksum first
		550	if (1) {
		551	$md5 =
		552	join "\x00",
		553	$processversion,
		554	map {
		555	Coro::cede;
		556	($src->[$_], Digest::MD5::md5_hex $data[$_])
		557	} 0.. $#$src;
		558
		559
		560	my $dbmd5 = db_get cache => "$id/md5";
		561	if ($dbmd5 eq $md5) {
		562	db_put cache => "$id/meta", $meta;
		563
		564	return db_get cache => "$id/data";
		565	}
		566	}
		567
		568	my $t1 = Time::HiRes::time;
		569	my $data = $process->(\@data);
		570	my $t2 = Time::HiRes::time;
		571
		572	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		573
		574	db_put cache => "$id/data", $data;
		575	db_put cache => "$id/md5" , $md5;
		576	db_put cache => "$id/meta", $meta;
		577
		578	return $data;
		579	}
		580
		581	db_get cache => "$id/data"
		582	}
		583
		584	=item cf::datalog type => key => value, ...
		585
		586	Log a datalog packet of the given type with the given key-value pairs.
		587
		588	=cut
		589
		590	sub datalog($@) {
		591	my ($type, %kv) = @_;
		592	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
135	}	593	}
136		594
137	=back	595	=back
138		596
139	=cut	597	=cut
140		598
141	#############################################################################	599	#############################################################################
142		600
143	=head2 ATTACHABLE OBJECTS	601	=head2 ATTACHABLE OBJECTS
144		602
145	You can define and attach attachments to each "attachable" object in	603	Many objects in crossfire are so-called attachable objects. That means you can
146	crossfire+ (objects, players, clients, maps and the special "global"	604	attach callbacks/event handlers (a collection of which is called an "attachment")
		605	to it. All such attachable objects support the following methods.
		606
147	class). In the following description, CLASS can be any of C<global>,	607	In the following description, CLASS can be any of C<global>, C<object>
148	C<object> C<player>, C<client> or C<map>.	608	C<player>, C<client> or C<map> (i.e. the attachable objects in
		609	Crossfire TRT).
149		610
150	=over 4	611	=over 4
151		612
		613	=item $attachable->attach ($attachment, key => $value...)
		614
		615	=item $attachable->detach ($attachment)
		616
		617	Attach/detach a pre-registered attachment to a specific object and give it
		618	the specified key/value pairs as arguments.
		619
		620	Example, attach a minesweeper attachment to the given object, making it a
		621	10x10 minesweeper game:
		622
		623	$obj->attach (minesweeper => width => 10, height => 10);
		624
		625	=item $bool = $attachable->attached ($name)
		626
		627	Checks wether the named attachment is currently attached to the object.
		628
		629	=item cf::CLASS->attach ...
		630
		631	=item cf::CLASS->detach ...
		632
		633	Define an anonymous attachment and attach it to all objects of the given
		634	CLASS. See the next function for an explanation of its arguments.
		635
		636	You can attach to global events by using the C<cf::global> class.
		637
		638	Example, log all player logins:
		639
		640	cf::player->attach (
		641	on_login => sub {
		642	my ($pl) = @_;
		643	...
		644	},
		645	);
		646
		647	Example, attach to the jeweler skill:
		648
		649	cf::object->attach (
		650	type => cf::SKILL,
		651	subtype => cf::SK_JEWELER,
		652	on_use_skill => sub {
		653	my ($sk, $ob, $part, $dir, $msg) = @_;
		654	...
		655	},
		656	);
		657
152	=item cf::CLASS::attachment $name, ...	658	=item cf::CLASS::attachment $name, ...
153		659
154	Register an attachment by name through which attachable objects can refer	660	Register an attachment by C<$name> through which attachable objects of the
155	to this attachment.	661	given CLASS can refer to this attachment.
156		662
157	=item $bool = $attachable->attached ($name)	663	Some classes such as crossfire maps and objects can specify attachments
		664	that are attached at load/instantiate time, thus the need for a name.
158		665
159	Checks wether the named attachment is currently attached to the object.
160
161	=item $attachable->attach ($attachment, key => $value...)
162
163	=item $attachable->detach ($attachment)
164
165	Attach/detach a pre-registered attachment either to a specific object
166	(C<$attachable>) or all objects of the given class (if C<$attachable> is a
167	class in a static method call).
168
169	You can attach to global events by using the C<cf::global> class.
170
171	These method calls expect any number of the following handler/hook	666	These calls expect any number of the following handler/hook descriptions:
172	descriptions:
173		667
174	=over 4	668	=over 4
175		669
176	=item prio => $number	670	=item prio => $number
177		671
…		…
203	package and register them. Only handlers for eevents supported by the	697	package and register them. Only handlers for eevents supported by the
204	object/class are recognised.	698	object/class are recognised.
205		699
206	=back	700	=back
207		701
		702	Example, define an attachment called "sockpuppet" that calls the given
		703	event handler when a monster attacks:
		704
		705	cf::object::attachment sockpuppet =>
		706	on_skill_attack => sub {
		707	my ($self, $victim) = @_;
		708	...
		709	}
		710	}
		711
		712	=item $attachable->valid
		713
		714	Just because you have a perl object does not mean that the corresponding
		715	C-level object still exists. If you try to access an object that has no
		716	valid C counterpart anymore you get an exception at runtime. This method
		717	can be used to test for existence of the C object part without causing an
		718	exception.
		719
208	=cut	720	=cut
209		721
210	# the following variables are defined in .xs and must not be re-created	722	# the following variables are defined in .xs and must not be re-created
211	our @CB_GLOBAL = (); # registry for all global events	723	our @CB_GLOBAL = (); # registry for all global events
		724	our @CB_ATTACHABLE = (); # registry for all attachables
212	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	725	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
213	our @CB_PLAYER = ();	726	our @CB_PLAYER = ();
214	our @CB_CLIENT = ();	727	our @CB_CLIENT = ();
215	our @CB_TYPE = (); # registry for type (cf-object class) based events	728	our @CB_TYPE = (); # registry for type (cf-object class) based events
216	our @CB_MAP = ();	729	our @CB_MAP = ();
217		730
218	my %attachment;	731	my %attachment;
		732
		733	sub cf::attachable::thawer_merge {
		734	# simply override everything except _meta
		735	local $_[0]{_meta};
		736	%{$_[0]} = %{$_[1]};
		737	}
219		738
220	sub _attach_cb($$$$) {	739	sub _attach_cb($$$$) {
221	my ($registry, $event, $prio, $cb) = @_;	740	my ($registry, $event, $prio, $cb) = @_;
222		741
223	use sort 'stable';	742	use sort 'stable';
…		…
226		745
227	@{$registry->[$event]} = sort	746	@{$registry->[$event]} = sort
228	{ $a->[0] cmp $b->[0] }	747	{ $a->[0] cmp $b->[0] }
229	@{$registry->[$event] || []}, $cb;	748	@{$registry->[$event] || []}, $cb;
230	}	749	}
		750
		751	# hack
		752	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
231		753
232	# attach handles attaching event callbacks	754	# attach handles attaching event callbacks
233	# the only thing the caller has to do is pass the correct	755	# the only thing the caller has to do is pass the correct
234	# registry (== where the callback attaches to).	756	# registry (== where the callback attaches to).
235	sub _attach {	757	sub _attach {
…		…
237		759
238	my $object_type;	760	my $object_type;
239	my $prio = 0;	761	my $prio = 0;
240	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	762	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
241		763
		764	#TODO: get rid of this hack
		765	if ($attachable_klass{$klass}) {
		766	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		767	}
		768
242	while (@arg) {	769	while (@arg) {
243	my $type = shift @arg;	770	my $type = shift @arg;
244		771
245	if ($type eq "prio") {	772	if ($type eq "prio") {
246	$prio = shift @arg;	773	$prio = shift @arg;
…		…
250	$registry = $CB_TYPE[$object_type] ||= [];	777	$registry = $CB_TYPE[$object_type] ||= [];
251		778
252	} elsif ($type eq "subtype") {	779	} elsif ($type eq "subtype") {
253	defined $object_type or Carp::croak "subtype specified without type";	780	defined $object_type or Carp::croak "subtype specified without type";
254	my $object_subtype = shift @arg;	781	my $object_subtype = shift @arg;
255	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	782	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
256		783
257	} elsif ($type eq "package") {	784	} elsif ($type eq "package") {
258	my $pkg = shift @arg;	785	my $pkg = shift @arg;
259		786
260	while (my ($name, $id) = each %cb_id) {	787	while (my ($name, $id) = each %cb_id) {
…		…
289	_attach $registry, $klass, @attach;	816	_attach $registry, $klass, @attach;
290	}	817	}
291		818
292	$obj->{$name} = \%arg;	819	$obj->{$name} = \%arg;
293	} else {	820	} else {
294	warn "object uses attachment '$name' that is not available, postponing.\n";	821	warn "object uses attachment '$name' which is not available, postponing.\n";
295	}	822	}
296		823
297	$obj->{_attachment}{$name} = undef;	824	$obj->{_attachment}{$name} = undef;
298	}	825	}
299		826
…		…
301	if (ref $_[0]) {	828	if (ref $_[0]) {
302	_object_attach @_;	829	_object_attach @_;
303	} else {	830	} else {
304	_attach shift->_attach_registry, @_;	831	_attach shift->_attach_registry, @_;
305	}	832	}
		833	_recalc_want;
306	};	834	};
307		835
308	# all those should be optimised	836	# all those should be optimised
309	sub cf::attachable::detach {	837	sub cf::attachable::detach {
310	my ($obj, $name) = @_;	838	my ($obj, $name) = @_;
…		…
313	delete $obj->{_attachment}{$name};	841	delete $obj->{_attachment}{$name};
314	reattach ($obj);	842	reattach ($obj);
315	} else {	843	} else {
316	Carp::croak "cannot, currently, detach class attachments";	844	Carp::croak "cannot, currently, detach class attachments";
317	}	845	}
		846	_recalc_want;
318	};	847	};
319		848
320	sub cf::attachable::attached {	849	sub cf::attachable::attached {
321	my ($obj, $name) = @_;	850	my ($obj, $name) = @_;
322		851
323	exists $obj->{_attachment}{$name}	852	exists $obj->{_attachment}{$name}
324	}	853	}
325		854
326	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	855	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
327	eval "#line " . __LINE__ . " 'cf.pm'	856	eval "#line " . __LINE__ . " 'cf.pm'
328	sub cf::\L$klass\E::_attach_registry {	857	sub cf::\L$klass\E::_attach_registry {
329	(\\\@CB_$klass, KLASS_$klass)	858	(\\\@CB_$klass, KLASS_$klass)
330	}	859	}
331		860
…		…
367	}	896	}
368		897
369	0	898	0
370	}	899	}
371		900
372	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	901	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
373		902
374	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
375
376	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
377
378	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	903	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
379		904
380	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
381
382	Generate a global/object/player/map-specific event with the given arguments.	905	Generate an object-specific event with the given arguments.
383		906
384	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	907	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
385	removed in future versions), and there is no public API to access override	908	removed in future versions), and there is no public API to access override
386	results (if you must, access C<@cf::invoke_results> directly).	909	results (if you must, access C<@cf::invoke_results> directly).
387		910
388	=back	911	=back
389		912
390	=cut	913	=cut
391		914
392	#############################################################################	915	#############################################################################
393
394	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
395
396	Attachable objects includes objects, players, clients and maps.
397
398	=over 4
399
400	=item $object->valid
401
402	Just because you have a perl object does not mean that the corresponding
403	C-level object still exists. If you try to access an object that has no
404	valid C counterpart anymore you get an exception at runtime. This method
405	can be used to test for existence of the C object part without causing an
406	exception.
407
408	=back
409
410	=cut
411
412	#############################################################################
413	# object support	916	# object support
414		917
415	sub instantiate {
416	my ($obj, $data) = @_;
417
418	$data = from_json $data;
419
420	for (@$data) {
421	my ($name, $args) = @$_;
422
423	$obj->attach ($name, %{$args || {} });
424	}
425	}
426
427	# basically do the same as instantiate, without calling instantiate
428	sub reattach {	918	sub reattach {
		919	# basically do the same as instantiate, without calling instantiate
429	my ($obj) = @_;	920	my ($obj) = @_;
		921
		922	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		923
430	my $registry = $obj->registry;	924	my $registry = $obj->registry;
431		925
432	@$registry = ();	926	@$registry = ();
433		927
434	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	928	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
443	warn "object uses attachment '$name' that is not available, postponing.\n";	937	warn "object uses attachment '$name' that is not available, postponing.\n";
444	}	938	}
445	}	939	}
446	}	940	}
447		941
448	sub object_freezer_save {	942	cf::attachable->attach (
449	my ($filename, $rdata, $objs) = @_;
450
451	if (length $$rdata) {
452	warn sprintf "saving %s (%d,%d)\n",
453	$filename, length $$rdata, scalar @$objs;
454
455	if (open my $fh, ">:raw", "$filename~") {
456	chmod SAVE_MODE, $fh;
457	syswrite $fh, $$rdata;
458	close $fh;
459
460	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
461	chmod SAVE_MODE, $fh;
462	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
463	close $fh;
464	rename "$filename.pst~", "$filename.pst";
465	} else {
466	unlink "$filename.pst";
467	}
468
469	rename "$filename~", $filename;
470	} else {
471	warn "FATAL: $filename~: $!\n";
472	}
473	} else {
474	unlink $filename;
475	unlink "$filename.pst";
476	}
477	}
478
479	sub object_freezer_as_string {
480	my ($rdata, $objs) = @_;
481
482	use Data::Dumper;
483
484	$$rdata . Dumper $objs
485	}
486
487	sub object_thawer_load {
488	my ($filename) = @_;
489
490	local $/;
491
492	my $av;
493
494	#TODO: use sysread etc.
495	if (open my $data, "<:raw:perlio", $filename) {
496	$data = <$data>;
497	if (open my $pst, "<:raw:perlio", "$filename.pst") {
498	$av = eval { (Storable::thaw <$pst>)->{objs} };
499	}
500	return ($data, $av);
501	}
502
503	()
504	}
505
506	cf::object->attach (
507	prio => -1000000,	943	prio => -1000000,
		944	on_instantiate => sub {
		945	my ($obj, $data) = @_;
		946
		947	$data = from_json $data;
		948
		949	for (@$data) {
		950	my ($name, $args) = @$_;
		951
		952	$obj->attach ($name, %{$args || {} });
		953	}
		954	},
		955	on_reattach => \&reattach,
508	on_clone => sub {	956	on_clone => sub {
509	my ($src, $dst) = @_;	957	my ($src, $dst) = @_;
510		958
511	@{$dst->registry} = @{$src->registry};	959	@{$dst->registry} = @{$src->registry};
512		960
…		…
515	%{$dst->{_attachment}} = %{$src->{_attachment}}	963	%{$dst->{_attachment}} = %{$src->{_attachment}}
516	if exists $src->{_attachment};	964	if exists $src->{_attachment};
517	},	965	},
518	);	966	);
519		967
		968	sub object_freezer_save {
		969	my ($filename, $rdata, $objs) = @_;
		970
		971	sync_job {
		972	if (length $$rdata) {
		973	warn sprintf "saving %s (%d,%d)\n",
		974	$filename, length $$rdata, scalar @$objs;
		975
		976	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		977	chmod SAVE_MODE, $fh;
		978	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		979	aio_fsync $fh if $cf::USE_FSYNC;
		980	close $fh;
		981
		982	if (@$objs) {
		983	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		984	chmod SAVE_MODE, $fh;
		985	my $data = Storable::nfreeze { version => 1, objs => $objs };
		986	aio_write $fh, 0, (length $data), $data, 0;
		987	aio_fsync $fh if $cf::USE_FSYNC;
		988	close $fh;
		989	aio_rename "$filename.pst~", "$filename.pst";
		990	}
		991	} else {
		992	aio_unlink "$filename.pst";
		993	}
		994
		995	aio_rename "$filename~", $filename;
		996	} else {
		997	warn "FATAL: $filename~: $!\n";
		998	}
		999	} else {
		1000	aio_unlink $filename;
		1001	aio_unlink "$filename.pst";
		1002	}
		1003	}
		1004	}
		1005
		1006	sub object_freezer_as_string {
		1007	my ($rdata, $objs) = @_;
		1008
		1009	use Data::Dumper;
		1010
		1011	$$rdata . Dumper $objs
		1012	}
		1013
		1014	sub object_thawer_load {
		1015	my ($filename) = @_;
		1016
		1017	my ($data, $av);
		1018
		1019	(aio_load $filename, $data) >= 0
		1020	or return;
		1021
		1022	unless (aio_stat "$filename.pst") {
		1023	(aio_load "$filename.pst", $av) >= 0
		1024	or return;
		1025	$av = eval { (Storable::thaw $av)->{objs} };
		1026	}
		1027
		1028	warn sprintf "loading %s (%d)\n",
		1029	$filename, length $data, scalar @{$av || []};
		1030	return ($data, $av);
		1031	}
		1032
		1033	=head2 COMMAND CALLBACKS
		1034
		1035	=over 4
		1036
		1037	=cut
		1038
520	#############################################################################	1039	#############################################################################
521	# command handling &c	1040	# command handling &c
522		1041
523	=item cf::register_command $name => \&callback($ob,$args);	1042	=item cf::register_command $name => \&callback($ob,$args);
524		1043
…		…
536	push @{ $COMMAND{$name} }, [$caller, $cb];	1055	push @{ $COMMAND{$name} }, [$caller, $cb];
537	}	1056	}
538		1057
539	=item cf::register_extcmd $name => \&callback($pl,$packet);	1058	=item cf::register_extcmd $name => \&callback($pl,$packet);
540		1059
541	Register a callbackf ro execution when the client sends an extcmd packet.	1060	Register a callback for execution when the client sends an (synchronous)
		1061	extcmd packet. Ext commands will be processed in the order they are
		1062	received by the server, like other user commands. The first argument is
		1063	the logged-in player. Ext commands can only be processed after a player
		1064	has logged in successfully.
542		1065
543	If the callback returns something, it is sent back as if reply was being	1066	If the callback returns something, it is sent back as if reply was being
544	called.	1067	called.
545		1068
		1069	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1070
		1071	Register a callback for execution when the client sends an (asynchronous)
		1072	exticmd packet. Exti commands are processed by the server as soon as they
		1073	are received, i.e. out of order w.r.t. other commands. The first argument
		1074	is a client socket. Exti commands can be received anytime, even before
		1075	log-in.
		1076
		1077	If the callback returns something, it is sent back as if reply was being
		1078	called.
		1079
546	=cut	1080	=cut
547		1081
548	sub register_extcmd {	1082	sub register_extcmd {
549	my ($name, $cb) = @_;	1083	my ($name, $cb) = @_;
550		1084
551	my $caller = caller;
552	#warn "registering extcmd '$name' to '$caller'";
553
554	$EXTCMD{$name} = [$cb, $caller];	1085	$EXTCMD{$name} = $cb;
		1086	}
		1087
		1088	sub register_exticmd {
		1089	my ($name, $cb) = @_;
		1090
		1091	$EXTICMD{$name} = $cb;
555	}	1092	}
556		1093
557	cf::player->attach (	1094	cf::player->attach (
558	on_command => sub {	1095	on_command => sub {
559	my ($pl, $name, $params) = @_;	1096	my ($pl, $name, $params) = @_;
…		…
568	cf::override;	1105	cf::override;
569	},	1106	},
570	on_extcmd => sub {	1107	on_extcmd => sub {
571	my ($pl, $buf) = @_;	1108	my ($pl, $buf) = @_;
572		1109
573	my $msg = eval { from_json $buf };	1110	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
574		1111
575	if (ref $msg) {	1112	if (ref $msg) {
576	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1113	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
577	if (my %reply = $cb->[0]->($pl, $msg)) {	1114	if (my %reply = $cb->($pl, $msg)) {
578	$pl->ext_reply ($msg->{msgid}, %reply);	1115	$pl->ext_reply ($msg->{msgid}, %reply);
579	}	1116	}
580	}	1117	}
581	} else {	1118	} else {
582	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1119	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
584		1121
585	cf::override;	1122	cf::override;
586	},	1123	},
587	);	1124	);
588		1125
		1126	sub load_extensions {
		1127	cf::sync_job {
		1128	my %todo;
		1129
		1130	for my $path (<$LIBDIR/*.ext>) {
		1131	next unless -r $path;
		1132
		1133	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1134	my $base = $1;
		1135	my $pkg = $1;
		1136	$pkg =~ s/[^[:word:]]/_/g;
		1137	$pkg = "ext::$pkg";
		1138
		1139	open my $fh, "<:utf8", $path
		1140	or die "$path: $!";
		1141
		1142	my $source = do { local $/; <$fh> };
		1143
		1144	my %ext = (
		1145	path => $path,
		1146	base => $base,
		1147	pkg => $pkg,
		1148	);
		1149
		1150	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1151	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1152
		1153	$ext{source} =
		1154	"package $pkg; use strict; use utf8;\n"
		1155	. "#line 1 \"$path\"\n{\n"
		1156	. $source
		1157	. "\n};\n1";
		1158
		1159	$todo{$base} = \%ext;
		1160	}
		1161
		1162	my %done;
		1163	while (%todo) {
		1164	my $progress;
		1165
		1166	while (my ($k, $v) = each %todo) {
		1167	for (split /,\s*/, $v->{meta}{depends}) {
		1168	goto skip
		1169	unless exists $done{$_};
		1170	}
		1171
		1172	warn "... loading '$k' into '$v->{pkg}'\n";
		1173
		1174	unless (eval $v->{source}) {
		1175	my $msg = $@ ? "$v->{path}: $@\n"
		1176	: "$v->{base}: extension inactive.\n";
		1177
		1178	if (exists $v->{meta}{mandatory}) {
		1179	warn $msg;
		1180	warn "mandatory extension failed to load, exiting.\n";
		1181	exit 1;
		1182	}
		1183
		1184	warn $msg;
		1185	}
		1186
		1187	$done{$k} = delete $todo{$k};
		1188	push @EXTS, $v->{pkg};
		1189	$progress = 1;
		1190	}
		1191
		1192	skip:
		1193	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1194	unless $progress;
		1195	}
		1196	};
		1197	}
		1198
		1199	#############################################################################
		1200
		1201	=back
		1202
		1203	=head2 CORE EXTENSIONS
		1204
		1205	Functions and methods that extend core crossfire objects.
		1206
		1207	=cut
		1208
		1209	package cf::player;
		1210
		1211	use Coro::AIO;
		1212
		1213	=head3 cf::player
		1214
		1215	=over 4
		1216
		1217	=item cf::player::find $login
		1218
		1219	Returns the given player object, loading it if necessary (might block).
		1220
		1221	=cut
		1222
		1223	sub playerdir($) {
		1224	"$PLAYERDIR/"
		1225	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1226	}
		1227
		1228	sub path($) {
		1229	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1230
		1231	(playerdir $login) . "/playerdata"
		1232	}
		1233
		1234	sub find_active($) {
		1235	$cf::PLAYER{$_[0]}
		1236	and $cf::PLAYER{$_[0]}->active
		1237	and $cf::PLAYER{$_[0]}
		1238	}
		1239
		1240	sub exists($) {
		1241	my ($login) = @_;
		1242
		1243	$cf::PLAYER{$login}
		1244	or cf::sync_job { !aio_stat path $login }
		1245	}
		1246
		1247	sub find($) {
		1248	return $cf::PLAYER{$_[0]} || do {
		1249	my $login = $_[0];
		1250
		1251	my $guard = cf::lock_acquire "user_find:$login";
		1252
		1253	$cf::PLAYER{$_[0]} || do {
		1254	# rename old playerfiles to new ones
		1255	#TODO: remove when no longer required
		1256	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1257	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1258	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1259	aio_unlink +(playerdir $login) . "/$login.pl";
		1260
		1261	my $pl = load_pl path $login
		1262	or return;
		1263	$cf::PLAYER{$login} = $pl
		1264	}
		1265	}
		1266	}
		1267
		1268	sub save($) {
		1269	my ($pl) = @_;
		1270
		1271	return if $pl->{deny_save};
		1272
		1273	my $path = path $pl;
		1274	my $guard = cf::lock_acquire "user_save:$path";
		1275
		1276	return if $pl->{deny_save};
		1277
		1278	aio_mkdir playerdir $pl, 0770;
		1279	$pl->{last_save} = $cf::RUNTIME;
		1280
		1281	$pl->save_pl ($path);
		1282	Coro::cede;
		1283	}
		1284
		1285	sub new($) {
		1286	my ($login) = @_;
		1287
		1288	my $self = create;
		1289
		1290	$self->ob->name ($login);
		1291	$self->{deny_save} = 1;
		1292
		1293	$cf::PLAYER{$login} = $self;
		1294
		1295	$self
		1296	}
		1297
		1298	=item $pl->quit_character
		1299
		1300	Nukes the player without looking back. If logged in, the connection will
		1301	be destroyed. May block for a long time.
		1302
		1303	=cut
		1304
		1305	sub quit_character {
		1306	my ($pl) = @_;
		1307
		1308	my $name = $pl->ob->name;
		1309
		1310	$pl->{deny_save} = 1;
		1311	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1312
		1313	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1314	$pl->deactivate;
		1315	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1316	$pl->ns->destroy if $pl->ns;
		1317
		1318	my $path = playerdir $pl;
		1319	my $temp = "$path~$cf::RUNTIME~deleting~";
		1320	aio_rename $path, $temp;
		1321	delete $cf::PLAYER{$pl->ob->name};
		1322	$pl->destroy;
		1323
		1324	my $prefix = qr<^~\Q$name\E/>;
		1325
		1326	# nuke player maps
		1327	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1328
		1329	IO::AIO::aio_rmtree $temp;
		1330	}
		1331
		1332	=item $pl->kick
		1333
		1334	Kicks a player out of the game. This destroys the connection.
		1335
		1336	=cut
		1337
		1338	sub kick {
		1339	my ($pl, $kicker) = @_;
		1340
		1341	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1342	$pl->killer ("kicked");
		1343	$pl->ns->destroy;
		1344	}
		1345
		1346	=item cf::player::list_logins
		1347
		1348	Returns am arrayref of all valid playernames in the system, can take a
		1349	while and may block, so not sync_job-capable, ever.
		1350
		1351	=cut
		1352
		1353	sub list_logins {
		1354	my $dirs = aio_readdir $PLAYERDIR
		1355	or return [];
		1356
		1357	my @logins;
		1358
		1359	for my $login (@$dirs) {
		1360	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1361	aio_read $fh, 0, 512, my $buf, 0 or next;
		1362	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1363
		1364	utf8::decode $login;
		1365	push @logins, $login;
		1366	}
		1367
		1368	\@logins
		1369	}
		1370
		1371	=item $player->maps
		1372
		1373	Returns an arrayref of map paths that are private for this
		1374	player. May block.
		1375
		1376	=cut
		1377
		1378	sub maps($) {
		1379	my ($pl) = @_;
		1380
		1381	$pl = ref $pl ? $pl->ob->name : $pl;
		1382
		1383	my $files = aio_readdir playerdir $pl
		1384	or return;
		1385
		1386	my @paths;
		1387
		1388	for (@$files) {
		1389	utf8::decode $_;
		1390	next if /\.(?:pl|pst)$/;
		1391	next unless /^$PATH_SEP/o;
		1392
		1393	push @paths, cf::map::normalise "~$pl/$_";
		1394	}
		1395
		1396	\@paths
		1397	}
		1398
		1399	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1400
		1401	Expand crossfire pod fragments into protocol xml.
		1402
		1403	=cut
		1404
		1405	sub expand_cfpod {
		1406	((my $self), (local $_)) = @_;
		1407
		1408	# escape & and <
		1409	s/&/&amp;/g;
		1410	s/(?<![BIUGH])</&lt;/g;
		1411
		1412	# this is buggy, it needs to properly take care of nested <'s
		1413
		1414	1 while
		1415	# replace B<>, I<>, U<> etc.
		1416	s/B<([^\>]*)>/<b>$1<\/b>/
		1417	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1418	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1419	# replace G<male|female> tags
		1420	|| s{G<([^>|]*)\|([^>]*)>}{
		1421	$self->gender ? $2 : $1
		1422	}ge
		1423	# replace H<hint text>
		1424	|| s{H<([^\>]*)>}
		1425	{
		1426	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1427	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1428	"")
		1429	[$self->{hintmode}]
		1430	}ge;
		1431
		1432	# create single paragraphs (very hackish)
		1433	s/(?<=\S)\n(?=\w)/ /g;
		1434
		1435	# compress some whitespace
		1436	s/\s+\n/\n/g; # ws line-ends
		1437	s/\n\n+/\n/g; # double lines
		1438	s/^\n+//; # beginning lines
		1439	s/\n+$//; # ending lines
		1440
		1441	$_
		1442	}
		1443
		1444	sub hintmode {
		1445	$_[0]{hintmode} = $_[1] if @_ > 1;
		1446	$_[0]{hintmode}
		1447	}
		1448
		1449	=item $player->ext_reply ($msgid, %msg)
		1450
		1451	Sends an ext reply to the player.
		1452
		1453	=cut
		1454
		1455	sub ext_reply($$%) {
		1456	my ($self, $id, %msg) = @_;
		1457
		1458	$msg{msgid} = $id;
		1459	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
		1460	}
		1461
		1462	=item $player->ext_event ($type, %msg)
		1463
		1464	Sends an ext event to the client.
		1465
		1466	=cut
		1467
		1468	sub ext_event($$%) {
		1469	my ($self, $type, %msg) = @_;
		1470
		1471	$self->ns->ext_event ($type, %msg);
		1472	}
		1473
		1474	=head3 cf::region
		1475
		1476	=over 4
		1477
		1478	=cut
		1479
		1480	package cf::region;
		1481
		1482	=item cf::region::find_by_path $path
		1483
		1484	Tries to decuce the likely region for a map knowing only its path.
		1485
		1486	=cut
		1487
		1488	sub find_by_path($) {
		1489	my ($path) = @_;
		1490
		1491	my ($match, $specificity);
		1492
		1493	for my $region (list) {
		1494	if ($region->match && $path =~ $region->match) {
		1495	($match, $specificity) = ($region, $region->specificity)
		1496	if $region->specificity > $specificity;
		1497	}
		1498	}
		1499
		1500	$match
		1501	}
		1502
		1503	=back
		1504
		1505	=head3 cf::map
		1506
		1507	=over 4
		1508
		1509	=cut
		1510
		1511	package cf::map;
		1512
		1513	use Fcntl;
		1514	use Coro::AIO;
		1515
		1516	use overload
		1517	'""' => \&as_string,
		1518	fallback => 1;
		1519
		1520	our $MAX_RESET = 3600;
		1521	our $DEFAULT_RESET = 3000;
		1522
		1523	sub generate_random_map {
		1524	my ($self, $rmp) = @_;
		1525	# mit "rum" bekleckern, nicht
		1526	$self->_create_random_map (
		1527	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1528	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1529	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1530	$rmp->{exit_on_final_map},
		1531	$rmp->{xsize}, $rmp->{ysize},
		1532	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1533	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1534	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1535	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1536	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1537	(cf::region::find $rmp->{region}), $rmp->{custom}
		1538	)
		1539	}
		1540
		1541	=item cf::map->register ($regex, $prio)
		1542
		1543	Register a handler for the map path matching the given regex at the
		1544	givne priority (higher is better, built-in handlers have priority 0, the
		1545	default).
		1546
		1547	=cut
		1548
589	sub register {	1549	sub register {
		1550	my (undef, $regex, $prio) = @_;
		1551	my $pkg = caller;
		1552
		1553	no strict;
		1554	push @{"$pkg\::ISA"}, __PACKAGE__;
		1555
		1556	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1557	}
		1558
		1559	# also paths starting with '/'
		1560	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1561
		1562	sub thawer_merge {
590	my ($base, $pkg) = @_;	1563	my ($self, $merge) = @_;
591		1564
592	#TODO	1565	# we have to keep some variables in memory intact
593	}	1566	local $self->{path};
		1567	local $self->{load_path};
594		1568
595	sub load_extension {	1569	$self->SUPER::thawer_merge ($merge);
		1570	}
		1571
		1572	sub normalise {
596	my ($path) = @_;	1573	my ($path, $base) = @_;
597		1574
598	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1575	$path = "$path"; # make sure its a string
599	my $base = $1;
600	my $pkg = $1;
601	$pkg =~ s/[^[:word:]]/_/g;
602	$pkg = "ext::$pkg";
603		1576
604	warn "loading '$path' into '$pkg'\n";	1577	$path =~ s/\.map$//;
605		1578
606	open my $fh, "<:utf8", $path	1579	# map plan:
607	or die "$path: $!";	1580	#
		1581	# /! non-realised random map exit (special hack!)
		1582	# {... are special paths that are not being touched
		1583	# ?xxx/... are special absolute paths
		1584	# ?random/... random maps
		1585	# /... normal maps
		1586	# ~user/... per-player map of a specific user
608		1587
609	my $source =	1588	$path =~ s/$PATH_SEP/\//go;
610	"package $pkg; use strict; use utf8;\n"
611	. "#line 1 \"$path\"\n{\n"
612	. (do { local $/; <$fh> })
613	. "\n};\n1";
614		1589
615	eval $source	1590	# treat it as relative path if it starts with
616	or die $@ ? "$path: $@\n"	1591	# something that looks reasonable
617	: "extension disabled.\n";	1592	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1593	$base or Carp::carp "normalise called with relative path and no base: '$path'";
618		1594
619	push @exts, $pkg;	1595	$base =~ s{[^/]+/?$}{};
620	$ext_pkg{$base} = $pkg;	1596	$path = "$base/$path";
621
622	# no strict 'refs';
623	# @{"$pkg\::ISA"} = ext::;
624
625	register $base, $pkg;
626	}
627
628	sub unload_extension {
629	my ($pkg) = @_;
630
631	warn "removing extension $pkg\n";
632
633	# remove hooks
634	#TODO
635	# for my $idx (0 .. $#PLUGIN_EVENT) {
636	# delete $hook[$idx]{$pkg};
637	# }	1597	}
638		1598
639	# remove commands	1599	for ($path) {
640	for my $name (keys %COMMAND) {	1600	redo if s{//}{/};
641	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };	1601	redo if s{/\.?/}{/};
		1602	redo if s{/[^/]+/\.\./}{/};
		1603	}
642		1604
643	if (@cb) {	1605	$path
644	$COMMAND{$name} = \@cb;	1606	}
		1607
		1608	sub new_from_path {
		1609	my (undef, $path, $base) = @_;
		1610
		1611	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1612
		1613	$path = normalise $path, $base;
		1614
		1615	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1616	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1617	my $self = bless cf::map::new, $pkg;
		1618	$self->{path} = $path; $self->path ($path);
		1619	$self->init; # pass $1 etc.
		1620	return $self;
		1621	}
		1622	}
		1623
		1624	Carp::carp "unable to resolve path '$path' (base '$base').";
		1625	()
		1626	}
		1627
		1628	sub init {
		1629	my ($self) = @_;
		1630
		1631	$self
		1632	}
		1633
		1634	sub as_string {
		1635	my ($self) = @_;
		1636
		1637	"$self->{path}"
		1638	}
		1639
		1640	# the displayed name, this is a one way mapping
		1641	sub visible_name {
		1642	&as_string
		1643	}
		1644
		1645	# the original (read-only) location
		1646	sub load_path {
		1647	my ($self) = @_;
		1648
		1649	"$MAPDIR/$self->{path}.map"
		1650	}
		1651
		1652	# the temporary/swap location
		1653	sub save_path {
		1654	my ($self) = @_;
		1655
		1656	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1657	"$TMPDIR/$path.map"
		1658	}
		1659
		1660	# the unique path, undef == no special unique path
		1661	sub uniq_path {
		1662	my ($self) = @_;
		1663
		1664	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1665	"$UNIQUEDIR/$path"
		1666	}
		1667
		1668	# and all this just because we cannot iterate over
		1669	# all maps in C++...
		1670	sub change_all_map_light {
		1671	my ($change) = @_;
		1672
		1673	$_->change_map_light ($change)
		1674	for grep $_->outdoor, values %cf::MAP;
		1675	}
		1676
		1677	sub decay_objects {
		1678	my ($self) = @_;
		1679
		1680	return if $self->{deny_reset};
		1681
		1682	$self->do_decay_objects;
		1683	}
		1684
		1685	sub unlink_save {
		1686	my ($self) = @_;
		1687
		1688	utf8::encode (my $save = $self->save_path);
		1689	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1690	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1691	}
		1692
		1693	sub load_header_from($) {
		1694	my ($self, $path) = @_;
		1695
		1696	utf8::encode $path;
		1697	#aio_open $path, O_RDONLY, 0
		1698	# or return;
		1699
		1700	$self->_load_header ($path)
		1701	or return;
		1702
		1703	$self->{load_path} = $path;
		1704
		1705	1
		1706	}
		1707
		1708	sub load_header_orig {
		1709	my ($self) = @_;
		1710
		1711	$self->load_header_from ($self->load_path)
		1712	}
		1713
		1714	sub load_header_temp {
		1715	my ($self) = @_;
		1716
		1717	$self->load_header_from ($self->save_path)
		1718	}
		1719
		1720	sub prepare_temp {
		1721	my ($self) = @_;
		1722
		1723	$self->last_access ((delete $self->{last_access})
		1724	|| $cf::RUNTIME); #d#
		1725	# safety
		1726	$self->{instantiate_time} = $cf::RUNTIME
		1727	if $self->{instantiate_time} > $cf::RUNTIME;
		1728	}
		1729
		1730	sub prepare_orig {
		1731	my ($self) = @_;
		1732
		1733	$self->{load_original} = 1;
		1734	$self->{instantiate_time} = $cf::RUNTIME;
		1735	$self->last_access ($cf::RUNTIME);
		1736	$self->instantiate;
		1737	}
		1738
		1739	sub load_header {
		1740	my ($self) = @_;
		1741
		1742	if ($self->load_header_temp) {
		1743	$self->prepare_temp;
645	} else {	1744	} else {
646	delete $COMMAND{$name};	1745	$self->load_header_orig
647	}	1746	or return;
		1747	$self->prepare_orig;
		1748	}
		1749
		1750	$self->{deny_reset} = 1
		1751	if $self->no_reset;
		1752
		1753	$self->default_region (cf::region::find_by_path $self->{path})
		1754	unless $self->default_region;
		1755
648	}	1756	1
		1757	}
649		1758
650	# remove extcmds	1759	sub find;
651	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {	1760	sub find {
652	delete $EXTCMD{$name};	1761	my ($path, $origin) = @_;
		1762
		1763	$path = normalise $path, $origin && $origin->path;
		1764
		1765	cf::lock_wait "map_find:$path";
		1766
		1767	$cf::MAP{$path} || do {
		1768	my $guard = cf::lock_acquire "map_find:$path";
		1769	my $map = new_from_path cf::map $path
		1770	or return;
		1771
		1772	$map->{last_save} = $cf::RUNTIME;
		1773
		1774	$map->load_header
		1775	or return;
		1776
		1777	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1778	# doing this can freeze the server in a sync job, obviously
		1779	#$cf::WAIT_FOR_TICK->wait;
		1780	$map->reset;
		1781	undef $guard;
		1782	return find $path;
		1783	}
		1784
		1785	$cf::MAP{$path} = $map
		1786	}
		1787	}
		1788
		1789	sub pre_load { }
		1790	sub post_load { }
		1791
		1792	sub load {
		1793	my ($self) = @_;
		1794
		1795	local $self->{deny_reset} = 1; # loading can take a long time
		1796
		1797	my $path = $self->{path};
		1798
653	}	1799	{
		1800	my $guard = cf::lock_acquire "map_load:$path";
654		1801
655	if (my $cb = $pkg->can ("unload")) {	1802	return if $self->in_memory != cf::MAP_SWAPPED;
656	eval {	1803
657	$cb->($pkg);	1804	$self->in_memory (cf::MAP_LOADING);
		1805
		1806	$self->alloc;
		1807
		1808	$self->pre_load;
		1809	Coro::cede;
		1810
		1811	$self->_load_objects ($self->{load_path}, 1)
		1812	or return;
		1813
		1814	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1815	if delete $self->{load_original};
		1816
		1817	if (my $uniq = $self->uniq_path) {
		1818	utf8::encode $uniq;
		1819	if (aio_open $uniq, O_RDONLY, 0) {
		1820	$self->clear_unique_items;
		1821	$self->_load_objects ($uniq, 0);
658	1	1822	}
659	} or warn "$pkg unloaded, but with errors: $@";	1823	}
660	}
661		1824
662	Symbol::delete_package $pkg;	1825	Coro::cede;
663	}	1826	# now do the right thing for maps
		1827	$self->link_multipart_objects;
		1828	$self->difficulty ($self->estimate_difficulty)
		1829	unless $self->difficulty;
		1830	Coro::cede;
664		1831
665	sub load_extensions {	1832	unless ($self->{deny_activate}) {
666	for my $ext (<$LIBDIR/*.ext>) {	1833	$self->decay_objects;
667	next unless -r $ext;	1834	$self->fix_auto_apply;
668	eval {	1835	$self->update_buttons;
669	load_extension $ext;	1836	Coro::cede;
670	1	1837	$self->set_darkness_map;
671	} or warn "$ext not loaded: $@";	1838	Coro::cede;
672	}	1839	$self->activate;
673	}	1840	}
674		1841
675	#############################################################################	1842	$self->in_memory (cf::MAP_IN_MEMORY);
676	# load/save/clean perl data associated with a map	1843	}
677		1844
678	*cf::mapsupport::on_clean = sub {	1845	$self->post_load;
		1846	}
		1847
		1848	sub customise_for {
		1849	my ($self, $ob) = @_;
		1850
		1851	return find "~" . $ob->name . "/" . $self->{path}
		1852	if $self->per_player;
		1853
		1854	# return find "?party/" . $ob->name . "/" . $self->{path}
		1855	# if $self->per_party;
		1856
		1857	$self
		1858	}
		1859
		1860	# find and load all maps in the 3x3 area around a map
		1861	sub load_diag {
679	my ($map) = @_;	1862	my ($map) = @_;
680		1863
681	my $path = $map->tmpname;	1864	my @diag; # diagonal neighbours
682	defined $path or return;
683		1865
684	unlink "$path.pst";	1866	for (0 .. 3) {
685	};	1867	my $neigh = $map->tile_path ($_)
		1868	or next;
		1869	$neigh = find $neigh, $map
		1870	or next;
		1871	$neigh->load;
686		1872
687	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1873	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1874	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1875	}
688		1876
689	#############################################################################	1877	for (@diag) {
690	# load/save perl data associated with player->ob objects	1878	my $neigh = find @$_
691		1879	or next;
692	sub all_objects(@) {	1880	$neigh->load;
693	@_, map all_objects ($_->inv), @_	1881	}
694	}	1882	}
695		1883
696	# TODO: compatibility cruft, remove when no longer needed	1884	sub find_sync {
697	cf::player->attach (	1885	my ($path, $origin) = @_;
698	on_load => sub {
699	my ($pl, $path) = @_;
700		1886
701	for my $o (all_objects $pl->ob) {	1887	cf::sync_job { find $path, $origin }
702	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1888	}
703	$o->set_ob_key_value ("_perl_data");
704		1889
705	%$o = %{ Storable::thaw pack "H*", $value };	1890	sub do_load_sync {
		1891	my ($map) = @_;
		1892
		1893	cf::sync_job { $map->load };
		1894	}
		1895
		1896	our %MAP_PREFETCH;
		1897	our $MAP_PREFETCHER = undef;
		1898
		1899	sub find_async {
		1900	my ($path, $origin) = @_;
		1901
		1902	$path = normalise $path, $origin && $origin->{path};
		1903
		1904	if (my $map = $cf::MAP{$path}) {
		1905	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1906	}
		1907
		1908	undef $MAP_PREFETCH{$path};
		1909	$MAP_PREFETCHER ||= cf::async {
		1910	while (%MAP_PREFETCH) {
		1911	for my $path (keys %MAP_PREFETCH) {
		1912	my $map = find $path
		1913	or next;
		1914	$map->load;
		1915
		1916	delete $MAP_PREFETCH{$path};
706	}	1917	}
707	}	1918	}
		1919	undef $MAP_PREFETCHER;
		1920	};
		1921	$MAP_PREFETCHER->prio (6);
		1922
		1923	()
		1924	}
		1925
		1926	sub save {
		1927	my ($self) = @_;
		1928
		1929	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1930
		1931	$self->{last_save} = $cf::RUNTIME;
		1932
		1933	return unless $self->dirty;
		1934
		1935	my $save = $self->save_path; utf8::encode $save;
		1936	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1937
		1938	$self->{load_path} = $save;
		1939
		1940	return if $self->{deny_save};
		1941
		1942	local $self->{last_access} = $self->last_access;#d#
		1943
		1944	cf::async {
		1945	$_->contr->save for $self->players;
		1946	};
		1947
		1948	if ($uniq) {
		1949	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1950	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1951	} else {
		1952	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
708	},	1953	}
709	);	1954	}
710		1955
711	#############################################################################	1956	sub swap_out {
		1957	my ($self) = @_;
712		1958
713	=head2 CORE EXTENSIONS	1959	# save first because save cedes
		1960	$self->save;
714		1961
715	Functions and methods that extend core crossfire objects.	1962	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1963
		1964	return if $self->players;
		1965	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1966	return if $self->{deny_save};
		1967
		1968	$self->clear;
		1969	$self->in_memory (cf::MAP_SWAPPED);
		1970	}
		1971
		1972	sub reset_at {
		1973	my ($self) = @_;
		1974
		1975	# TODO: safety, remove and allow resettable per-player maps
		1976	return 1e99 if $self->{deny_reset};
		1977
		1978	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1979	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1980
		1981	$time + $to
		1982	}
		1983
		1984	sub should_reset {
		1985	my ($self) = @_;
		1986
		1987	$self->reset_at <= $cf::RUNTIME
		1988	}
		1989
		1990	sub reset {
		1991	my ($self) = @_;
		1992
		1993	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1994
		1995	return if $self->players;
		1996
		1997	warn "resetting map ", $self->path;
		1998
		1999	$self->in_memory (cf::MAP_SWAPPED);
		2000
		2001	# need to save uniques path
		2002	unless ($self->{deny_save}) {
		2003	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2004
		2005	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2006	if $uniq;
		2007	}
		2008
		2009	delete $cf::MAP{$self->path};
		2010
		2011	$self->clear;
		2012
		2013	$_->clear_links_to ($self) for values %cf::MAP;
		2014
		2015	$self->unlink_save;
		2016	$self->destroy;
		2017	}
		2018
		2019	my $nuke_counter = "aaaa";
		2020
		2021	sub nuke {
		2022	my ($self) = @_;
		2023
		2024	delete $cf::MAP{$self->path};
		2025
		2026	$self->unlink_save;
		2027
		2028	bless $self, "cf::map";
		2029	delete $self->{deny_reset};
		2030	$self->{deny_save} = 1;
		2031	$self->reset_timeout (1);
		2032	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2033
		2034	$cf::MAP{$self->path} = $self;
		2035
		2036	$self->reset; # polite request, might not happen
		2037	}
		2038
		2039	=item $maps = cf::map::tmp_maps
		2040
		2041	Returns an arrayref with all map paths of currently instantiated and saved
		2042	maps. May block.
		2043
		2044	=cut
		2045
		2046	sub tmp_maps() {
		2047	[
		2048	map {
		2049	utf8::decode $_;
		2050	/\.map$/
		2051	? normalise $_
		2052	: ()
		2053	} @{ aio_readdir $TMPDIR or [] }
		2054	]
		2055	}
		2056
		2057	=item $maps = cf::map::random_maps
		2058
		2059	Returns an arrayref with all map paths of currently instantiated and saved
		2060	random maps. May block.
		2061
		2062	=cut
		2063
		2064	sub random_maps() {
		2065	[
		2066	map {
		2067	utf8::decode $_;
		2068	/\.map$/
		2069	? normalise "?random/$_"
		2070	: ()
		2071	} @{ aio_readdir $RANDOMDIR or [] }
		2072	]
		2073	}
		2074
		2075	=item cf::map::unique_maps
		2076
		2077	Returns an arrayref of paths of all shared maps that have
		2078	instantiated unique items. May block.
		2079
		2080	=cut
		2081
		2082	sub unique_maps() {
		2083	[
		2084	map {
		2085	utf8::decode $_;
		2086	/\.map$/
		2087	? normalise $_
		2088	: ()
		2089	} @{ aio_readdir $UNIQUEDIR or [] }
		2090	]
		2091	}
		2092
		2093	package cf;
		2094
		2095	=back
		2096
		2097	=head3 cf::object
		2098
		2099	=cut
		2100
		2101	package cf::object;
716		2102
717	=over 4	2103	=over 4
718		2104
719	=item cf::player::exists $login	2105	=item $ob->inv_recursive
720		2106
721	Returns true when the given account exists.	2107	Returns the inventory of the object _and_ their inventories, recursively.
722		2108
723	=cut	2109	=cut
724		2110
725	sub cf::player::exists($) {	2111	sub inv_recursive_;
726	cf::player::find $_[0]	2112	sub inv_recursive_ {
727	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	2113	map { $_, inv_recursive_ $_->inv } @_
728	}	2114	}
		2115
		2116	sub inv_recursive {
		2117	inv_recursive_ inv $_[0]
		2118	}
		2119
		2120	package cf;
		2121
		2122	=back
		2123
		2124	=head3 cf::object::player
		2125
		2126	=over 4
729		2127
730	=item $player_object->reply ($npc, $msg[, $flags])	2128	=item $player_object->reply ($npc, $msg[, $flags])
731		2129
732	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2130	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
733	can be C<undef>. Does the right thing when the player is currently in a	2131	can be C<undef>. Does the right thing when the player is currently in a
…		…
735		2133
736	=cut	2134	=cut
737		2135
738	# rough implementation of a future "reply" method that works	2136	# rough implementation of a future "reply" method that works
739	# with dialog boxes.	2137	# with dialog boxes.
		2138	#TODO: the first argument must go, split into a $npc->reply_to ( method
740	sub cf::object::player::reply($$$;$) {	2139	sub cf::object::player::reply($$$;$) {
741	my ($self, $npc, $msg, $flags) = @_;	2140	my ($self, $npc, $msg, $flags) = @_;
742		2141
743	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2142	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
744		2143
745	if ($self->{record_replies}) {	2144	if ($self->{record_replies}) {
746	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2145	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2146
747	} else {	2147	} else {
		2148	my $pl = $self->contr;
		2149
		2150	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2151	my $diag = $pl->{npc_dialog};
		2152	$diag->{pl}->ext_reply (
		2153	$diag->{id},
		2154	msgtype => "reply",
		2155	msg => $diag->{pl}->expand_cfpod ($msg),
		2156	add_topics => []
		2157	);
		2158
		2159	} else {
748	$msg = $npc->name . " says: $msg" if $npc;	2160	$msg = $npc->name . " says: $msg" if $npc;
749	$self->message ($msg, $flags);	2161	$self->message ($msg, $flags);
		2162	}
750	}	2163	}
751	}
752
753	=item $player->ext_reply ($msgid, $msgtype, %msg)
754
755	Sends an ext reply to the player.
756
757	=cut
758
759	sub cf::player::ext_reply($$$%) {
760	my ($self, $id, %msg) = @_;
761
762	$msg{msgid} = $id;
763
764	$self->send ("ext " . to_json \%msg);
765	}	2164	}
766		2165
767	=item $player_object->may ("access")	2166	=item $player_object->may ("access")
768		2167
769	Returns wether the given player is authorized to access resource "access"	2168	Returns wether the given player is authorized to access resource "access"
…		…
778	(ref $cf::CFG{"may_$access"}	2177	(ref $cf::CFG{"may_$access"}
779	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	2178	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
780	: $cf::CFG{"may_$access"})	2179	: $cf::CFG{"may_$access"})
781	}	2180	}
782		2181
783	=cut	2182	=item $player_object->enter_link
784		2183
785	#############################################################################	2184	Freezes the player and moves him/her to a special map (C<{link}>).
		2185
		2186	The player should be reasonably safe there for short amounts of time. You
		2187	I<MUST> call C<leave_link> as soon as possible, though.
		2188
		2189	Will never block.
		2190
		2191	=item $player_object->leave_link ($map, $x, $y)
		2192
		2193	Moves the player out of the special C<{link}> map onto the specified
		2194	map. If the map is not valid (or omitted), the player will be moved back
		2195	to the location he/she was before the call to C<enter_link>, or, if that
		2196	fails, to the emergency map position.
		2197
		2198	Might block.
		2199
		2200	=cut
		2201
		2202	sub link_map {
		2203	unless ($LINK_MAP) {
		2204	$LINK_MAP = cf::map::find "{link}"
		2205	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2206	$LINK_MAP->load;
		2207	}
		2208
		2209	$LINK_MAP
		2210	}
		2211
		2212	sub cf::object::player::enter_link {
		2213	my ($self) = @_;
		2214
		2215	$self->deactivate_recursive;
		2216
		2217	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2218
		2219	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2220	if $self->map && $self->map->{path} ne "{link}";
		2221
		2222	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2223	}
		2224
		2225	sub cf::object::player::leave_link {
		2226	my ($self, $map, $x, $y) = @_;
		2227
		2228	return unless $self->contr->active;
		2229
		2230	my $link_pos = delete $self->{_link_pos};
		2231
		2232	unless ($map) {
		2233	# restore original map position
		2234	($map, $x, $y) = @{ $link_pos || [] };
		2235	$map = cf::map::find $map;
		2236
		2237	unless ($map) {
		2238	($map, $x, $y) = @$EMERGENCY_POSITION;
		2239	$map = cf::map::find $map
		2240	or die "FATAL: cannot load emergency map\n";
		2241	}
		2242	}
		2243
		2244	($x, $y) = (-1, -1)
		2245	unless (defined $x) && (defined $y);
		2246
		2247	# use -1 or undef as default coordinates, not 0, 0
		2248	($x, $y) = ($map->enter_x, $map->enter_y)
		2249	if $x <=0 && $y <= 0;
		2250
		2251	$map->load;
		2252	$map->load_diag;
		2253
		2254	return unless $self->contr->active;
		2255	$self->activate_recursive;
		2256
		2257	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2258	$self->enter_map ($map, $x, $y);
		2259	}
		2260
		2261	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2262
		2263	Moves the player to the given map-path and coordinates by first freezing
		2264	her, loading and preparing them map, calling the provided $check callback
		2265	that has to return the map if sucecssful, and then unfreezes the player on
		2266	the new (success) or old (failed) map position.
		2267
		2268	=cut
		2269
		2270	our $GOTOGEN;
		2271
		2272	sub cf::object::player::goto {
		2273	my ($self, $path, $x, $y, $check) = @_;
		2274
		2275	# do generation counting so two concurrent goto's will be executed in-order
		2276	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2277
		2278	$self->enter_link;
		2279
		2280	(async {
		2281	my $map = eval {
		2282	my $map = cf::map::find $path;
		2283
		2284	if ($map) {
		2285	$map = $map->customise_for ($self);
		2286	$map = $check->($map) if $check && $map;
		2287	} else {
		2288	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2289	}
		2290
		2291	$map
		2292	};
		2293
		2294	if ($@) {
		2295	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2296	LOG llevError | logBacktrace, Carp::longmess $@;
		2297	}
		2298
		2299	if ($gen == $self->{_goto_generation}) {
		2300	delete $self->{_goto_generation};
		2301	$self->leave_link ($map, $x, $y);
		2302	}
		2303	})->prio (1);
		2304	}
		2305
		2306	=item $player_object->enter_exit ($exit_object)
		2307
		2308	=cut
		2309
		2310	sub parse_random_map_params {
		2311	my ($spec) = @_;
		2312
		2313	my $rmp = { # defaults
		2314	xsize => (cf::rndm 15, 40),
		2315	ysize => (cf::rndm 15, 40),
		2316	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2317	#layout => string,
		2318	};
		2319
		2320	for (split /\n/, $spec) {
		2321	my ($k, $v) = split /\s+/, $_, 2;
		2322
		2323	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2324	}
		2325
		2326	$rmp
		2327	}
		2328
		2329	sub prepare_random_map {
		2330	my ($exit) = @_;
		2331
		2332	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2333
		2334	# all this does is basically replace the /! path by
		2335	# a new random map path (?random/...) with a seed
		2336	# that depends on the exit object
		2337
		2338	my $rmp = parse_random_map_params $exit->msg;
		2339
		2340	if ($exit->map) {
		2341	$rmp->{region} = $exit->region->name;
		2342	$rmp->{origin_map} = $exit->map->path;
		2343	$rmp->{origin_x} = $exit->x;
		2344	$rmp->{origin_y} = $exit->y;
		2345	}
		2346
		2347	$rmp->{random_seed} ||= $exit->random_seed;
		2348
		2349	my $data = cf::to_json $rmp;
		2350	my $md5 = Digest::MD5::md5_hex $data;
		2351	my $meta = "$RANDOMDIR/$md5.meta";
		2352
		2353	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2354	aio_write $fh, 0, (length $data), $data, 0;
		2355	undef $fh;
		2356	aio_rename "$meta~", $meta;
		2357
		2358	$exit->slaying ("?random/$md5");
		2359	$exit->msg (undef);
		2360	}
		2361	}
		2362
		2363	sub cf::object::player::enter_exit {
		2364	my ($self, $exit) = @_;
		2365
		2366	return unless $self->type == cf::PLAYER;
		2367
		2368	if ($exit->slaying eq "/!") {
		2369	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2370	# the problem is that $exit might not survive long enough
		2371	# so it needs to be done right now, right here
		2372	cf::sync_job { prepare_random_map $exit };
		2373	}
		2374
		2375	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2376	my $hp = $exit->stats->hp;
		2377	my $sp = $exit->stats->sp;
		2378
		2379	$self->enter_link;
		2380
		2381	# if exit is damned, update players death & WoR home-position
		2382	$self->contr->savebed ($slaying, $hp, $sp)
		2383	if $exit->flag (FLAG_DAMNED);
		2384
		2385	(async {
		2386	$self->deactivate_recursive; # just to be sure
		2387	unless (eval {
		2388	$self->goto ($slaying, $hp, $sp);
		2389
		2390	1;
		2391	}) {
		2392	$self->message ("Something went wrong deep within the crossfire server. "
		2393	. "I'll try to bring you back to the map you were before. "
		2394	. "Please report this to the dungeon master!",
		2395	cf::NDI_UNIQUE | cf::NDI_RED);
		2396
		2397	warn "ERROR in enter_exit: $@";
		2398	$self->leave_link;
		2399	}
		2400	})->prio (1);
		2401	}
		2402
		2403	=head3 cf::client
		2404
		2405	=over 4
		2406
		2407	=item $client->send_drawinfo ($text, $flags)
		2408
		2409	Sends a drawinfo packet to the client. Circumvents output buffering so
		2410	should not be used under normal circumstances.
		2411
		2412	=cut
		2413
		2414	sub cf::client::send_drawinfo {
		2415	my ($self, $text, $flags) = @_;
		2416
		2417	utf8::encode $text;
		2418	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2419	}
		2420
		2421	=item $client->send_msg ($color, $type, $msg, [extra...])
		2422
		2423	Send a drawinfo or msg packet to the client, formatting the msg for the
		2424	client if neccessary. C<$type> should be a string identifying the type of
		2425	the message, with C<log> being the default. If C<$color> is negative, suppress
		2426	the message unless the client supports the msg packet.
		2427
		2428	=cut
		2429
		2430	sub cf::client::send_msg {
		2431	my ($self, $color, $type, $msg, @extra) = @_;
		2432
		2433	$msg = $self->pl->expand_cfpod ($msg);
		2434
		2435	return unless @extra || length $msg;
		2436
		2437	if ($self->can_msg) {
		2438	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2439	} else {
		2440	# replace some tags by gcfclient-compatible ones
		2441	for ($msg) {
		2442	1 while
		2443	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2444	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2445	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2446	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2447	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2448	}
		2449
		2450	if ($color >= 0) {
		2451	if (0 && $msg =~ /\[/) {
		2452	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2453	} else {
		2454	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2455	$self->send_packet ("drawinfo $color $msg")
		2456	}
		2457	}
		2458	}
		2459	}
		2460
		2461	=item $client->ext_event ($type, %msg)
		2462
		2463	Sends an ext event to the client.
		2464
		2465	=cut
		2466
		2467	sub cf::client::ext_event($$%) {
		2468	my ($self, $type, %msg) = @_;
		2469
		2470	$msg{msgtype} = "event_$type";
		2471	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
		2472	}
		2473
		2474	=item $success = $client->query ($flags, "text", \&cb)
		2475
		2476	Queues a query to the client, calling the given callback with
		2477	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2478	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2479
		2480	Queries can fail, so check the return code. Or don't, as queries will
		2481	become reliable at some point in the future.
		2482
		2483	=cut
		2484
		2485	sub cf::client::query {
		2486	my ($self, $flags, $text, $cb) = @_;
		2487
		2488	return unless $self->state == ST_PLAYING
		2489	|| $self->state == ST_SETUP
		2490	|| $self->state == ST_CUSTOM;
		2491
		2492	$self->state (ST_CUSTOM);
		2493
		2494	utf8::encode $text;
		2495	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2496
		2497	$self->send_packet ($self->{query_queue}[0][0])
		2498	if @{ $self->{query_queue} } == 1;
		2499
		2500	1
		2501	}
		2502
		2503	cf::client->attach (
		2504	on_connect => sub {
		2505	my ($ns) = @_;
		2506
		2507	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2508	},
		2509	on_reply => sub {
		2510	my ($ns, $msg) = @_;
		2511
		2512	# this weird shuffling is so that direct followup queries
		2513	# get handled first
		2514	my $queue = delete $ns->{query_queue}
		2515	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2516
		2517	(shift @$queue)->[1]->($msg);
		2518	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2519
		2520	push @{ $ns->{query_queue} }, @$queue;
		2521
		2522	if (@{ $ns->{query_queue} } == @$queue) {
		2523	if (@$queue) {
		2524	$ns->send_packet ($ns->{query_queue}[0][0]);
		2525	} else {
		2526	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2527	}
		2528	}
		2529	},
		2530	on_exticmd => sub {
		2531	my ($ns, $buf) = @_;
		2532
		2533	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2534
		2535	if (ref $msg) {
		2536	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2537	if (my %reply = $cb->($ns, $msg)) {
		2538	$reply{msgid} = $msg->{msgid};
		2539	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2540	}
		2541	}
		2542	} else {
		2543	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2544	}
		2545
		2546	cf::override;
		2547	},
		2548	);
		2549
		2550	=item $client->async (\&cb)
		2551
		2552	Create a new coroutine, running the specified callback. The coroutine will
		2553	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2554	or loss of connection).
		2555
		2556	=cut
		2557
		2558	sub cf::client::async {
		2559	my ($self, $cb) = @_;
		2560
		2561	my $coro = &Coro::async ($cb);
		2562
		2563	$coro->on_destroy (sub {
		2564	delete $self->{_coro}{$coro+0};
		2565	});
		2566
		2567	$self->{_coro}{$coro+0} = $coro;
		2568
		2569	$coro
		2570	}
		2571
		2572	cf::client->attach (
		2573	on_destroy => sub {
		2574	my ($ns) = @_;
		2575
		2576	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2577	},
		2578	);
		2579
		2580	=back
		2581
786		2582
787	=head2 SAFE SCRIPTING	2583	=head2 SAFE SCRIPTING
788		2584
789	Functions that provide a safe environment to compile and execute	2585	Functions that provide a safe environment to compile and execute
790	snippets of perl code without them endangering the safety of the server	2586	snippets of perl code without them endangering the safety of the server
…		…
803		2599
804	# here we export the classes and methods available to script code	2600	# here we export the classes and methods available to script code
805		2601
806	=pod	2602	=pod
807		2603
808	The following fucntions and emthods are available within a safe environment:	2604	The following functions and methods are available within a safe environment:
809		2605
810	cf::object contr pay_amount pay_player map	2606	cf::object
		2607	contr pay_amount pay_player map x y force_find force_add
		2608	insert remove
		2609
811	cf::object::player player	2610	cf::object::player
812	cf::player peaceful	2611	player
813	cf::map trigger	2612
		2613	cf::player
		2614	peaceful
		2615
		2616	cf::map
		2617	trigger
814		2618
815	=cut	2619	=cut
816		2620
817	for (	2621	for (
818	["cf::object" => qw(contr pay_amount pay_player map)],	2622	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2623	insert remove)],
819	["cf::object::player" => qw(player)],	2624	["cf::object::player" => qw(player)],
820	["cf::player" => qw(peaceful)],	2625	["cf::player" => qw(peaceful)],
821	["cf::map" => qw(trigger)],	2626	["cf::map" => qw(trigger)],
822	) {	2627	) {
823	no strict 'refs';	2628	no strict 'refs';
…		…
894	=back	2699	=back
895		2700
896	=cut	2701	=cut
897		2702
898	#############################################################################	2703	#############################################################################
		2704	# the server's init and main functions
899		2705
900	=head2 EXTENSION DATABASE SUPPORT	2706	sub load_facedata($) {
		2707	my ($path) = @_;
901		2708
902	Crossfire maintains a very simple database for extension use. It can	2709	warn "loading facedata from $path\n";
903	currently store anything that can be serialised using Storable, which
904	excludes objects.
905		2710
906	The parameter C<$family> should best start with the name of the extension	2711	my $facedata;
907	using it, it should be unique.	2712	0 < aio_load $path, $facedata
		2713	or die "$path: $!";
908		2714
909	=over 4	2715	$facedata = Coro::Storable::thaw $facedata;
910		2716
911	=item $hashref = cf::db_get $family	2717	$facedata->{version} == 2
		2718	or cf::cleanup "$path: version mismatch, cannot proceed.";
912		2719
913	Return a hashref for use by the extension C<$family>, which can be
914	modified. After modifications, you have to call C<cf::db_dirty> or
915	C<cf::db_sync>.
916
917	=item $value = cf::db_get $family => $key
918
919	Returns a single value from the database
920
921	=item cf::db_put $family => $hashref
922
923	Stores the given family hashref into the database. Updates are delayed, if
924	you want the data to be synced to disk immediately, use C<cf::db_sync>.
925
926	=item cf::db_put $family => $key => $value
927
928	Stores the given C<$value> in the family hash. Updates are delayed, if you
929	want the data to be synced to disk immediately, use C<cf::db_sync>.
930
931	=item cf::db_dirty
932
933	Marks the database as dirty, to be updated at a later time.
934
935	=item cf::db_sync
936
937	Immediately write the database to disk I<if it is dirty>.
938
939	=cut
940
941	our $DB;
942
943	{
944	my $path = cf::localdir . "/database.pst";
945
946	sub db_load() {
947	warn "loading database $path\n";#d# remove later
948	$DB = stat $path ? Storable::retrieve $path : { };
949	}	2720	{
		2721	my $faces = $facedata->{faceinfo};
950		2722
951	my $pid;	2723	while (my ($face, $info) = each %$faces) {
		2724	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2725	cf::face::set_visibility $idx, $info->{visibility};
		2726	cf::face::set_magicmap $idx, $info->{magicmap};
		2727	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2728	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
952		2729
953	sub db_save() {	2730	cf::cede_to_tick;
954	warn "saving database $path\n";#d# remove later
955	waitpid $pid, 0 if $pid;
956	if (0 == ($pid = fork)) {
957	$DB->{_meta}{version} = 1;
958	Storable::nstore $DB, "$path~";
959	rename "$path~", $path;
960	cf::_exit 0 if defined $pid;
961	}
962	}
963
964	my $dirty;
965
966	sub db_sync() {
967	db_save if $dirty;
968	undef $dirty;
969	}
970
971	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
972	db_sync;
973	});
974
975	sub db_dirty() {
976	$dirty = 1;
977	$idle->start;
978	}
979
980	sub db_get($;$) {
981	@_ >= 2
982	? $DB->{$_[0]}{$_[1]}
983	: ($DB->{$_[0]} ||= { })
984	}
985
986	sub db_put($$;$) {
987	if (@_ >= 3) {
988	$DB->{$_[0]}{$_[1]} = $_[2];
989	} else {
990	$DB->{$_[0]} = $_[1];
991	}
992	db_dirty;
993	}
994
995	cf::global->attach (
996	prio => 10000,
997	on_cleanup => sub {
998	db_sync;
999	},	2731	}
1000	);
1001	}
1002		2732
1003	#############################################################################	2733	while (my ($face, $info) = each %$faces) {
1004	# the server's main()	2734	next unless $info->{smooth};
		2735	my $idx = cf::face::find $face
		2736	or next;
		2737	if (my $smooth = cf::face::find $info->{smooth}) {
		2738	cf::face::set_smooth $idx, $smooth;
		2739	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		2740	} else {
		2741	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2742	}
		2743
		2744	cf::cede_to_tick;
		2745	}
		2746	}
		2747
		2748	{
		2749	my $anims = $facedata->{animinfo};
		2750
		2751	while (my ($anim, $info) = each %$anims) {
		2752	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2753	cf::cede_to_tick;
		2754	}
		2755
		2756	cf::anim::invalidate_all; # d'oh
		2757	}
		2758
		2759	{
		2760	# TODO: for gcfclient pleasure, we should give resources
		2761	# that gcfclient doesn't grok a >10000 face index.
		2762	my $res = $facedata->{resource};
		2763	my $enc = JSON::XS->new->utf8->canonical;
		2764
		2765	while (my ($name, $info) = each %$res) {
		2766	my $meta = $enc->encode ({
		2767	name => $name,
		2768	type => $info->{type},
		2769	copyright => $info->{copyright},
		2770	});
		2771	my $data = pack "(w/a*)*", $meta, $info->{data};
		2772	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2773
		2774	use Data::Dumper; warn Dumper substr $data, 0, 100;#d#
		2775
		2776	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2777	cf::face::set_type $idx, 1;
		2778	cf::face::set_data $idx, 0, $data, $chk;
		2779
		2780	# TODO
		2781	cf::cede_to_tick;
		2782	}
		2783	}
		2784
		2785	1
		2786	}
		2787
		2788	sub reload_regions {
		2789	load_resource_file "$MAPDIR/regions"
		2790	or die "unable to load regions file\n";
		2791	}
		2792
		2793	sub reload_facedata {
		2794	load_facedata "$DATADIR/facedata"
		2795	or die "unable to load facedata\n";
		2796	}
		2797
		2798	sub reload_archetypes {
		2799	load_resource_file "$DATADIR/archetypes"
		2800	or die "unable to load archetypes\n";
		2801	#d# NEED to laod twice to resolve forward references
		2802	# this really needs to be done in an extra post-pass
		2803	# (which needs to be synchronous, so solve it differently)
		2804	load_resource_file "$DATADIR/archetypes"
		2805	or die "unable to load archetypes\n";
		2806	}
		2807
		2808	sub reload_treasures {
		2809	load_resource_file "$DATADIR/treasures"
		2810	or die "unable to load treasurelists\n";
		2811	}
		2812
		2813	sub reload_resources {
		2814	warn "reloading resource files...\n";
		2815
		2816	reload_regions;
		2817	reload_facedata;
		2818	#reload_archetypes;#d#
		2819	reload_archetypes;
		2820	reload_treasures;
		2821
		2822	warn "finished reloading resource files\n";
		2823	}
		2824
		2825	sub init {
		2826	reload_resources;
		2827	}
1005		2828
1006	sub cfg_load {	2829	sub cfg_load {
1007	open my $fh, "<:utf8", cf::confdir . "/config"	2830	open my $fh, "<:utf8", "$CONFDIR/config"
1008	or return;	2831	or return;
1009		2832
1010	local $/;	2833	local $/;
1011	*CFG = YAML::Syck::Load <$fh>;	2834	*CFG = YAML::Syck::Load <$fh>;
		2835
		2836	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2837
		2838	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2839	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2840
		2841	if (exists $CFG{mlockall}) {
		2842	eval {
		2843	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2844	and die "WARNING: m(un)lockall failed: $!\n";
		2845	};
		2846	warn $@ if $@;
		2847	}
1012	}	2848	}
1013		2849
1014	sub main {	2850	sub main {
		2851	# we must not ever block the main coroutine
		2852	local $Coro::idle = sub {
		2853	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2854	(async {
		2855	Event::one_event;
		2856	})->prio (Coro::PRIO_MAX);
		2857	};
		2858
1015	cfg_load;	2859	cfg_load;
1016	db_load;	2860	db_init;
1017	load_extensions;	2861	load_extensions;
		2862
		2863	$TICK_WATCHER->start;
1018	Event::loop;	2864	Event::loop;
1019	}	2865	}
1020		2866
1021	#############################################################################	2867	#############################################################################
1022	# initialisation	2868	# initialisation and cleanup
1023		2869
1024	sub _perl_reload(&) {	2870	# install some emergency cleanup handlers
		2871	BEGIN {
		2872	for my $signal (qw(INT HUP TERM)) {
		2873	Event->signal (
		2874	reentrant => 0,
		2875	data => WF_AUTOCANCEL,
		2876	signal => $signal,
		2877	prio => 0,
		2878	cb => sub {
		2879	cf::cleanup "SIG$signal";
		2880	},
		2881	);
		2882	}
		2883	}
		2884
		2885	sub write_runtime {
		2886	my $runtime = "$LOCALDIR/runtime";
		2887
		2888	# first touch the runtime file to show we are still running:
		2889	# the fsync below can take a very very long time.
		2890
		2891	IO::AIO::aio_utime $runtime, undef, undef;
		2892
		2893	my $guard = cf::lock_acquire "write_runtime";
		2894
		2895	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2896	or return;
		2897
		2898	my $value = $cf::RUNTIME + 90 + 10;
		2899	# 10 is the runtime save interval, for a monotonic clock
		2900	# 60 allows for the watchdog to kill the server.
		2901
		2902	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2903	and return;
		2904
		2905	# always fsync - this file is important
		2906	aio_fsync $fh
		2907	and return;
		2908
		2909	# touch it again to show we are up-to-date
		2910	aio_utime $fh, undef, undef;
		2911
		2912	close $fh
		2913	or return;
		2914
		2915	aio_rename "$runtime~", $runtime
		2916	and return;
		2917
		2918	warn "runtime file written.\n";
		2919
		2920	1
		2921	}
		2922
		2923	sub emergency_save() {
		2924	my $freeze_guard = cf::freeze_mainloop;
		2925
		2926	warn "enter emergency perl save\n";
		2927
		2928	cf::sync_job {
		2929	# use a peculiar iteration method to avoid tripping on perl
		2930	# refcount bugs in for. also avoids problems with players
		2931	# and maps saved/destroyed asynchronously.
		2932	warn "begin emergency player save\n";
		2933	for my $login (keys %cf::PLAYER) {
		2934	my $pl = $cf::PLAYER{$login} or next;
		2935	$pl->valid or next;
		2936	$pl->save;
		2937	}
		2938	warn "end emergency player save\n";
		2939
		2940	warn "begin emergency map save\n";
		2941	for my $path (keys %cf::MAP) {
		2942	my $map = $cf::MAP{$path} or next;
		2943	$map->valid or next;
		2944	$map->save;
		2945	}
		2946	warn "end emergency map save\n";
		2947
		2948	warn "begin emergency database checkpoint\n";
		2949	BDB::db_env_txn_checkpoint $DB_ENV;
		2950	warn "end emergency database checkpoint\n";
		2951	};
		2952
		2953	warn "leave emergency perl save\n";
		2954	}
		2955
		2956	sub post_cleanup {
1025	my ($msg) = @_;	2957	my ($make_core) = @_;
1026		2958
1027	$msg->("reloading...");	2959	warn Carp::longmess "post_cleanup backtrace"
		2960	if $make_core;
		2961	}
1028		2962
1029	eval {	2963	sub do_reload_perl() {
1030	# cancel all watchers	2964	# can/must only be called in main
		2965	if ($Coro::current != $Coro::main) {
		2966	warn "can only reload from main coroutine";
		2967	return;
		2968	}
		2969
		2970	warn "reloading...";
		2971
		2972	warn "entering sync_job";
		2973
		2974	cf::sync_job {
		2975	cf::write_runtime; # external watchdog should not bark
		2976	cf::emergency_save;
		2977	cf::write_runtime; # external watchdog should not bark
		2978
		2979	warn "syncing database to disk";
		2980	BDB::db_env_txn_checkpoint $DB_ENV;
		2981
		2982	# if anything goes wrong in here, we should simply crash as we already saved
		2983
		2984	warn "cancelling all WF_AUTOCANCEL watchers";
1031	for (Event::all_watchers) {	2985	for (Event::all_watchers) {
1032	$_->cancel if $_->data & WF_AUTOCANCEL;	2986	$_->cancel if $_->data & WF_AUTOCANCEL;
1033	}	2987	}
1034		2988
1035	# unload all extensions	2989	warn "flushing outstanding aio requests";
1036	for (@exts) {	2990	for (;;) {
1037	$msg->("unloading <$_>");	2991	BDB::flush;
1038	unload_extension $_;	2992	IO::AIO::flush;
		2993	Coro::cede;
		2994	last unless IO::AIO::nreqs || BDB::nreqs;
		2995	warn "iterate...";
		2996	}
		2997
		2998	++$RELOAD;
		2999
		3000	warn "cancelling all extension coros";
		3001	$_->cancel for values %EXT_CORO;
		3002	%EXT_CORO = ();
		3003
		3004	warn "removing commands";
		3005	%COMMAND = ();
		3006
		3007	warn "removing ext/exti commands";
		3008	%EXTCMD = ();
		3009	%EXTICMD = ();
		3010
		3011	warn "unloading/nuking all extensions";
		3012	for my $pkg (@EXTS) {
		3013	warn "... unloading $pkg";
		3014
		3015	if (my $cb = $pkg->can ("unload")) {
		3016	eval {
		3017	$cb->($pkg);
		3018	1
		3019	} or warn "$pkg unloaded, but with errors: $@";
1039	}	3020	}
1040		3021
		3022	warn "... nuking $pkg";
		3023	Symbol::delete_package $pkg;
		3024	}
		3025
1041	# unload all modules loaded from $LIBDIR	3026	warn "unloading all perl modules loaded from $LIBDIR";
1042	while (my ($k, $v) = each %INC) {	3027	while (my ($k, $v) = each %INC) {
1043	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	3028	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1044		3029
1045	$msg->("removing <$k>");	3030	warn "... unloading $k";
1046	delete $INC{$k};	3031	delete $INC{$k};
1047		3032
1048	$k =~ s/\.pm$//;	3033	$k =~ s/\.pm$//;
1049	$k =~ s/\//::/g;	3034	$k =~ s/\//::/g;
1050		3035
…		…
1053	}	3038	}
1054		3039
1055	Symbol::delete_package $k;	3040	Symbol::delete_package $k;
1056	}	3041	}
1057		3042
1058	# sync database to disk
1059	cf::db_sync;
1060
1061	# get rid of safe::, as good as possible	3043	warn "getting rid of safe::, as good as possible";
1062	Symbol::delete_package "safe::$_"	3044	Symbol::delete_package "safe::$_"
1063	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	3045	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1064		3046
1065	# remove register_script_function callbacks
1066	# TODO
1067
1068	# unload cf.pm "a bit"	3047	warn "unloading cf.pm \"a bit\"";
1069	delete $INC{"cf.pm"};	3048	delete $INC{"cf.pm"};
		3049	delete $INC{"cf/pod.pm"};
1070		3050
1071	# don't, removes xs symbols, too,	3051	# don't, removes xs symbols, too,
1072	# and global variables created in xs	3052	# and global variables created in xs
1073	#Symbol::delete_package __PACKAGE__;	3053	#Symbol::delete_package __PACKAGE__;
1074		3054
1075	# reload cf.pm	3055	warn "unload completed, starting to reload now";
		3056
1076	$msg->("reloading cf.pm");	3057	warn "reloading cf.pm";
1077	require cf;	3058	require cf;
		3059	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1078		3060
1079	# load config and database again	3061	warn "loading config and database again";
1080	cf::cfg_load;	3062	cf::cfg_load;
1081	cf::db_load;
1082		3063
1083	# load extensions	3064	warn "loading extensions";
1084	$msg->("load extensions");
1085	cf::load_extensions;	3065	cf::load_extensions;
1086		3066
1087	# reattach attachments to objects	3067	warn "reattaching attachments to objects/players";
1088	$msg->("reattach");	3068	_global_reattach; # objects, sockets
1089	_global_reattach;	3069	warn "reattaching attachments to maps";
		3070	reattach $_ for values %MAP;
		3071	warn "reattaching attachments to players";
		3072	reattach $_ for values %PLAYER;
		3073
		3074	warn "leaving sync_job";
		3075
		3076	1
		3077	} or do {
		3078	warn $@;
		3079	warn "error while reloading, exiting.";
		3080	exit 1;
1090	};	3081	};
1091	$msg->($@) if $@;
1092		3082
1093	$msg->("reloaded");	3083	warn "reloaded";
1094	};	3084	};
1095		3085
1096	sub perl_reload() {	3086	our $RELOAD_WATCHER; # used only during reload
1097	_perl_reload {	3087
1098	warn $_[0];	3088	sub reload_perl() {
1099	print "$_[0]\n";	3089	# doing reload synchronously and two reloads happen back-to-back,
		3090	# coro crashes during coro_state_free->destroy here.
		3091
		3092	$RELOAD_WATCHER ||= Event->timer (
		3093	reentrant => 0,
		3094	after => 0,
		3095	data => WF_AUTOCANCEL,
		3096	cb => sub {
		3097	do_reload_perl;
		3098	undef $RELOAD_WATCHER;
		3099	},
1100	};	3100	);
1101	}	3101	}
1102		3102
1103	register "<global>", __PACKAGE__;
1104
1105	register_command "perl-reload" => sub {	3103	register_command "reload" => sub {
1106	my ($who, $arg) = @_;	3104	my ($who, $arg) = @_;
1107		3105
1108	if ($who->flag (FLAG_WIZ)) {	3106	if ($who->flag (FLAG_WIZ)) {
1109	_perl_reload {	3107	$who->message ("reloading server.");
1110	warn $_[0];	3108	async { reload_perl };
1111	$who->message ($_[0]);	3109	}
		3110	};
		3111
		3112	unshift @INC, $LIBDIR;
		3113
		3114	my $bug_warning = 0;
		3115
		3116	our @WAIT_FOR_TICK;
		3117	our @WAIT_FOR_TICK_BEGIN;
		3118
		3119	sub wait_for_tick {
		3120	return unless $TICK_WATCHER->is_active;
		3121	return if $Coro::current == $Coro::main;
		3122
		3123	my $signal = new Coro::Signal;
		3124	push @WAIT_FOR_TICK, $signal;
		3125	$signal->wait;
		3126	}
		3127
		3128	sub wait_for_tick_begin {
		3129	return unless $TICK_WATCHER->is_active;
		3130	return if $Coro::current == $Coro::main;
		3131
		3132	my $signal = new Coro::Signal;
		3133	push @WAIT_FOR_TICK_BEGIN, $signal;
		3134	$signal->wait;
		3135	}
		3136
		3137	my $min = 1e6;#d#
		3138	my $avg = 10;
		3139	$TICK_WATCHER = Event->timer (
		3140	reentrant => 0,
		3141	parked => 1,
		3142	prio => 0,
		3143	at => $NEXT_TICK || $TICK,
		3144	data => WF_AUTOCANCEL,
		3145	cb => sub {
		3146	if ($Coro::current != $Coro::main) {
		3147	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3148	unless ++$bug_warning > 10;
		3149	return;
		3150	}
		3151
		3152	$NOW = $tick_start = Event::time;
		3153
		3154	cf::server_tick; # one server iteration
		3155
		3156	0 && sync_job {#d#
		3157	for(1..10) {
		3158	my $t = Event::time;
		3159	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3160	or die;
		3161
		3162	$map->width (50);
		3163	$map->height (50);
		3164	$map->alloc;
		3165	$map->_load_objects ("/tmp/x.map", 1);
		3166	my $t = Event::time - $t;
		3167
		3168	#next unless $t < 0.0013;#d#
		3169	if ($t < $min) {
		3170	$min = $t;
		3171	}
		3172	$avg = $avg * 0.99 + $t * 0.01;
		3173	}
		3174	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3175	exit 0;
		3176	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1112	};	3177	};
1113	}
1114	};
1115		3178
1116	unshift @INC, $LIBDIR;	3179	$RUNTIME += $TICK;
1117
1118	$TICK_WATCHER = Event->timer (
1119	prio => 0,
1120	at => $NEXT_TICK || 1,
1121	data => WF_AUTOCANCEL,
1122	cb => sub {
1123	cf::server_tick; # one server iteration
1124
1125	my $NOW = Event::time;
1126	$NEXT_TICK += $TICK;	3180	$NEXT_TICK += $TICK;
		3181
		3182	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3183	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3184	Coro::async_pool {
		3185	write_runtime
		3186	or warn "ERROR: unable to write runtime file: $!";
		3187	};
		3188	}
		3189
		3190	# my $AFTER = Event::time;
		3191	# warn $AFTER - $NOW;#d#
		3192
		3193	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3194	$sig->send;
		3195	}
		3196	while (my $sig = shift @WAIT_FOR_TICK) {
		3197	$sig->send;
		3198	}
		3199
		3200	$NOW = Event::time;
1127		3201
1128	# if we are delayed by four ticks or more, skip them all	3202	# if we are delayed by four ticks or more, skip them all
1129	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3203	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1130		3204
1131	$TICK_WATCHER->at ($NEXT_TICK);	3205	$TICK_WATCHER->at ($NEXT_TICK);
1132	$TICK_WATCHER->start;	3206	$TICK_WATCHER->start;
		3207
		3208	$LOAD = ($NOW - $tick_start) / $TICK;
		3209	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3210
		3211	_post_tick;
		3212
		3213
1133	},	3214	},
1134	);	3215	);
1135		3216
		3217	{
		3218	BDB::max_poll_time $TICK * 0.1;
		3219	$BDB_POLL_WATCHER = Event->io (
		3220	reentrant => 0,
		3221	fd => BDB::poll_fileno,
		3222	poll => 'r',
		3223	prio => 0,
		3224	data => WF_AUTOCANCEL,
		3225	cb => \&BDB::poll_cb,
		3226	);
		3227	BDB::min_parallel 8;
		3228
		3229	BDB::set_sync_prepare {
		3230	my $status;
		3231	my $current = $Coro::current;
		3232	(
		3233	sub {
		3234	$status = $!;
		3235	$current->ready; undef $current;
		3236	},
		3237	sub {
		3238	Coro::schedule while defined $current;
		3239	$! = $status;
		3240	},
		3241	)
		3242	};
		3243
		3244	unless ($DB_ENV) {
		3245	$DB_ENV = BDB::db_env_create;
		3246
		3247	cf::sync_job {
		3248	eval {
		3249	BDB::db_env_open
		3250	$DB_ENV,
		3251	$BDBDIR,
		3252	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3253	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3254	0666;
		3255
		3256	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3257
		3258	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3259	$DB_ENV->set_lk_detect;
		3260	};
		3261
		3262	cf::cleanup "db_env_open(db): $@" if $@;
		3263	};
		3264	}
		3265	}
		3266
		3267	{
		3268	IO::AIO::min_parallel 8;
		3269
		3270	undef $Coro::AIO::WATCHER;
1136	IO::AIO::max_poll_time $TICK * 0.2;	3271	IO::AIO::max_poll_time $TICK * 0.1;
1137		3272	$AIO_POLL_WATCHER = Event->io (
1138	Event->io (fd => IO::AIO::poll_fileno,	3273	reentrant => 0,
1139	poll => 'r',
1140	prio => 5,
1141	data => WF_AUTOCANCEL,	3274	data => WF_AUTOCANCEL,
		3275	fd => IO::AIO::poll_fileno,
		3276	poll => 'r',
		3277	prio => 6,
1142	cb => \&IO::AIO::poll_cb);	3278	cb => \&IO::AIO::poll_cb,
		3279	);
		3280	}
		3281
		3282	my $_log_backtrace;
		3283
		3284	sub _log_backtrace {
		3285	my ($msg, @addr) = @_;
		3286
		3287	$msg =~ s/\n//;
		3288
		3289	# limit the # of concurrent backtraces
		3290	if ($_log_backtrace < 2) {
		3291	++$_log_backtrace;
		3292	async {
		3293	my @bt = fork_call {
		3294	@addr = map { sprintf "%x", $_ } @addr;
		3295	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3296	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3297	or die "addr2line: $!";
		3298
		3299	my @funcs;
		3300	my @res = <$fh>;
		3301	chomp for @res;
		3302	while (@res) {
		3303	my ($func, $line) = splice @res, 0, 2, ();
		3304	push @funcs, "[$func] $line";
		3305	}
		3306
		3307	@funcs
		3308	};
		3309
		3310	LOG llevInfo, "[ABT] $msg\n";
		3311	LOG llevInfo, "[ABT] $_\n" for @bt;
		3312	--$_log_backtrace;
		3313	};
		3314	} else {
		3315	LOG llevInfo, "[ABT] $msg\n";
		3316	LOG llevInfo, "[ABT] [suppressed]\n";
		3317	}
		3318	}
		3319
		3320	# load additional modules
		3321	use cf::pod;
		3322
		3323	END { cf::emergency_save }
1143		3324
1144	1	3325	1
1145		3326

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