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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.95 by root, Fri Dec 22 02:04:20 2006 UTC vs.
Revision 1.257 by root, Sat Apr 21 17:34:24 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 BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
11	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
12	use Time::HiRes;	31	use Time::HiRes;
13	use Event;	32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
14	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
15		41
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
18		44
19	use strict;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		46
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		48
23	our %COMMAND = ();	49	our %COMMAND = ();
24	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
26		56
27	_init_vars;	57	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	58	our @EVENT;
30	our $LIBDIR = datadir . "/ext";
31		59
32	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
33	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
35		82
36	our %CFG;	83	our %CFG;
37		84
38	our $UPTIME; $UPTIME ||= time;	85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	binmode STDOUT;
		96	binmode STDERR;
		97
		98	# read virtual server time, if available
		99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		100	open my $fh, "<", "$LOCALDIR/runtime"
		101	or die "unable to read runtime file: $!";
		102	$RUNTIME = <$fh> + 0.;
		103	}
		104
		105	mkdir $_
		106	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		107
		108	our $EMERGENCY_POSITION;
		109
		110	sub cf::map::normalise;
39		111
40	#############################################################################	112	#############################################################################
41		113
42	=head2 GLOBAL VARIABLES	114	=head2 GLOBAL VARIABLES
43		115
…		…
45		117
46	=item $cf::UPTIME	118	=item $cf::UPTIME
47		119
48	The timestamp of the server start (so not actually an uptime).	120	The timestamp of the server start (so not actually an uptime).
49		121
50	=item $cf::LIBDIR	122	=item $cf::RUNTIME
51		123
52	The perl library directory, where extensions and cf-specific modules can	124	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.	125	every server tick.
		126
		127	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		128	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		129	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		130
		131	Various directories - "/etc", read-only install directory, perl-library
		132	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		133	unique-items directory, player file directory, random maps directory and
		134	database environment.
		135
		136	=item $cf::NOW
		137
		138	The time of the last (current) server tick.
54		139
55	=item $cf::TICK	140	=item $cf::TICK
56		141
57	The interval between server ticks, in seconds.	142	The interval between server ticks, in seconds.
58		143
59	=item %cf::CFG	144	=item %cf::CFG
60		145
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	146	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	147	from wherever your confdir points to.
		148
		149	=item cf::wait_for_tick, cf::wait_for_tick_begin
		150
		151	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		152	returns directly I<after> the tick processing (and consequently, can only wake one process
		153	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
63		154
64	=back	155	=back
65		156
66	=cut	157	=cut
67		158
68	BEGIN {	159	BEGIN {
69	*CORE::GLOBAL::warn = sub {	160	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	161	my $msg = join "", @_;
		162
71	$msg .= "\n"	163	$msg .= "\n"
72	unless $msg =~ /\n$/;	164	unless $msg =~ /\n$/;
73		165
74	print STDERR "cfperl: $msg";	166	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		167
		168	utf8::encode $msg;
75	LOG llevError, "cfperl: $msg";	169	LOG llevError, $msg;
76	};	170	};
77	}	171	}
78		172
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		179
86	# we bless all objects into (empty) derived classes to force a method lookup	180	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	181	# within the Safe compartment.
88	for my $pkg (qw(	182	for my $pkg (qw(
89	cf::global	183	cf::global cf::attachable
90	cf::object cf::object::player	184	cf::object cf::object::player
91	cf::client cf::player	185	cf::client cf::player
92	cf::arch cf::living	186	cf::arch cf::living
93	cf::map cf::party cf::region	187	cf::map cf::party cf::region
94	)) {	188	)) {
…		…
98		192
99	$Event::DIED = sub {	193	$Event::DIED = sub {
100	warn "error in event callback: @_";	194	warn "error in event callback: @_";
101	};	195	};
102		196
103	my %ext_pkg;
104	my @exts;
105	my @hook;
106
107	=head2 UTILITY FUNCTIONS	197	=head2 UTILITY FUNCTIONS
108		198
109	=over 4	199	=over 4
110		200
111	=cut	201	=item dumpval $ref
112		202
		203	=cut
		204
		205	sub dumpval {
		206	eval {
		207	local $SIG{__DIE__};
		208	my $d;
		209	if (1) {
		210	$d = new Data::Dumper([$_[0]], ["*var"]);
		211	$d->Terse(1);
		212	$d->Indent(2);
		213	$d->Quotekeys(0);
		214	$d->Useqq(1);
		215	#$d->Bless(...);
		216	$d->Seen($_[1]) if @_ > 1;
		217	$d = $d->Dump();
		218	}
		219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		220	$d
		221	} || "[unable to dump $_[0]: '$@']";
		222	}
		223
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
114		225
115	=item $ref = cf::from_json $json	226	=item $ref = cf::from_json $json
116		227
117	Converts a JSON string into the corresponding perl data structure.	228	Converts a JSON string into the corresponding perl data structure.
118		229
119	=cut
120
121	sub from_json($) {
122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
123	JSON::Syck::Load $_[0]
124	}
125
126	=item $json = cf::to_json $ref	230	=item $json = cf::to_json $ref
127		231
128	Converts a perl data structure into its JSON representation.	232	Converts a perl data structure into its JSON representation.
129		233
130	=cut	234	=item cf::lock_wait $string
131		235
132	sub to_json($) {	236	Wait until the given lock is available. See cf::lock_acquire.
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	237
134	JSON::Syck::Dump $_[0]	238	=item my $lock = cf::lock_acquire $string
		239
		240	Wait until the given lock is available and then acquires it and returns
		241	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		242	for example when the coroutine gets canceled), the lock is automatically
		243	returned.
		244
		245	Lock names should begin with a unique identifier (for example, cf::map::find
		246	uses map_find and cf::map::load uses map_load).
		247
		248	=item $locked = cf::lock_active $string
		249
		250	Return true if the lock is currently active, i.e. somebody has locked it.
		251
		252	=cut
		253
		254	our %LOCK;
		255
		256	sub lock_wait($) {
		257	my ($key) = @_;
		258
		259	# wait for lock, if any
		260	while ($LOCK{$key}) {
		261	push @{ $LOCK{$key} }, $Coro::current;
		262	Coro::schedule;
		263	}
		264	}
		265
		266	sub lock_acquire($) {
		267	my ($key) = @_;
		268
		269	# wait, to be sure we are not locked
		270	lock_wait $key;
		271
		272	$LOCK{$key} = [];
		273
		274	Coro::guard {
		275	# wake up all waiters, to be on the safe side
		276	$_->ready for @{ delete $LOCK{$key} };
		277	}
		278	}
		279
		280	sub lock_active($) {
		281	my ($key) = @_;
		282
		283	! ! $LOCK{$key}
		284	}
		285
		286	sub freeze_mainloop {
		287	return unless $TICK_WATCHER->is_active;
		288
		289	my $guard = Coro::guard {
		290	$TICK_WATCHER->start;
		291	};
		292	$TICK_WATCHER->stop;
		293	$guard
		294	}
		295
		296	=item cf::async { BLOCK }
		297
		298	Currently the same as Coro::async_pool, meaning you cannot use
		299	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		300	thing you are allowed to do is call C<prio> on it.
		301
		302	=cut
		303
		304	BEGIN { *async = \&Coro::async_pool }
		305
		306	=item cf::sync_job { BLOCK }
		307
		308	The design of crossfire+ requires that the main coro ($Coro::main) is
		309	always able to handle events or runnable, as crossfire+ is only partly
		310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		311
		312	If it must be done, put the blocking parts into C<sync_job>. This will run
		313	the given BLOCK in another coroutine while waiting for the result. The
		314	server will be frozen during this time, so the block should either finish
		315	fast or be very important.
		316
		317	=cut
		318
		319	sub sync_job(&) {
		320	my ($job) = @_;
		321
		322	if ($Coro::current == $Coro::main) {
		323	# this is the main coro, too bad, we have to block
		324	# till the operation succeeds, freezing the server :/
		325
		326	# TODO: use suspend/resume instead
		327	# (but this is cancel-safe)
		328	my $freeze_guard = freeze_mainloop;
		329
		330	my $busy = 1;
		331	my @res;
		332
		333	(async {
		334	@res = eval { $job->() };
		335	warn $@ if $@;
		336	undef $busy;
		337	})->prio (Coro::PRIO_MAX);
		338
		339	while ($busy) {
		340	Coro::cede or Event::one_event;
		341	}
		342
		343	wantarray ? @res : $res[0]
		344	} else {
		345	# we are in another coroutine, how wonderful, everything just works
		346
		347	$job->()
		348	}
		349	}
		350
		351	=item $coro = cf::async_ext { BLOCK }
		352
		353	Like async, but this coro is automatically being canceled when the
		354	extension calling this is being unloaded.
		355
		356	=cut
		357
		358	sub async_ext(&) {
		359	my $cb = shift;
		360
		361	my $coro = &Coro::async ($cb);
		362
		363	$coro->on_destroy (sub {
		364	delete $EXT_CORO{$coro+0};
		365	});
		366	$EXT_CORO{$coro+0} = $coro;
		367
		368	$coro
		369	}
		370
		371	sub write_runtime {
		372	my $guard = cf::lock_acquire "write_runtime";
		373
		374	my $runtime = "$LOCALDIR/runtime";
		375
		376	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		377	or return;
		378
		379	my $value = $cf::RUNTIME + 90 + 10;
		380	# 10 is the runtime save interval, for a monotonic clock
		381	# 60 allows for the watchdog to kill the server.
		382
		383	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		384	and return;
		385
		386	# always fsync - this file is important
		387	aio_fsync $fh
		388	and return;
		389
		390	close $fh
		391	or return;
		392
		393	aio_rename "$runtime~", $runtime
		394	and return;
		395
		396	1
		397	}
		398
		399	=item cf::datalog type => key => value, ...
		400
		401	Log a datalog packet of the given type with the given key-value pairs.
		402
		403	=cut
		404
		405	sub datalog($@) {
		406	my ($type, %kv) = @_;
		407	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
135	}	408	}
136		409
137	=back	410	=back
138		411
139	=cut	412	=cut
…		…
249	my ($self, $victim) = @_;	522	my ($self, $victim) = @_;
250	...	523	...
251	}	524	}
252	}	525	}
253		526
		527	=item $attachable->valid
		528
		529	Just because you have a perl object does not mean that the corresponding
		530	C-level object still exists. If you try to access an object that has no
		531	valid C counterpart anymore you get an exception at runtime. This method
		532	can be used to test for existence of the C object part without causing an
		533	exception.
		534
254	=cut	535	=cut
255		536
256	# the following variables are defined in .xs and must not be re-created	537	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	538	our @CB_GLOBAL = (); # registry for all global events
		539	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	540	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	541	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	542	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	543	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	544	our @CB_MAP = ();
263		545
264	my %attachment;	546	my %attachment;
		547
		548	sub cf::attachable::thawer_merge {
		549	# simply override everything except _meta
		550	local $_[0]{_meta};
		551	%{$_[0]} = %{$_[1]};
		552	}
265		553
266	sub _attach_cb($$$$) {	554	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	555	my ($registry, $event, $prio, $cb) = @_;
268		556
269	use sort 'stable';	557	use sort 'stable';
…		…
272		560
273	@{$registry->[$event]} = sort	561	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	562	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	563	@{$registry->[$event] || []}, $cb;
276	}	564	}
		565
		566	# hack
		567	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		568
278	# attach handles attaching event callbacks	569	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	570	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	571	# registry (== where the callback attaches to).
281	sub _attach {	572	sub _attach {
…		…
283		574
284	my $object_type;	575	my $object_type;
285	my $prio = 0;	576	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	577	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		578
		579	#TODO: get rid of this hack
		580	if ($attachable_klass{$klass}) {
		581	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		582	}
		583
288	while (@arg) {	584	while (@arg) {
289	my $type = shift @arg;	585	my $type = shift @arg;
290		586
291	if ($type eq "prio") {	587	if ($type eq "prio") {
292	$prio = shift @arg;	588	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	663	my ($obj, $name) = @_;
368		664
369	exists $obj->{_attachment}{$name}	665	exists $obj->{_attachment}{$name}
370	}	666	}
371		667
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	668	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	669	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	670	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	671	(\\\@CB_$klass, KLASS_$klass)
376	}	672	}
377		673
…		…
413	}	709	}
414		710
415	0	711	0
416	}	712	}
417		713
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	714	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		715
420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
421
422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
423
424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	716	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		717
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	718	Generate an object-specific event with the given arguments.
429		719
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	720	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override	721	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	722	results (if you must, access C<@cf::invoke_results> directly).
433		723
434	=back	724	=back
435		725
436	=cut	726	=cut
437		727
438	#############################################################################	728	#############################################################################
439
440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
441
442	Attachable objects includes objects, players, clients and maps.
443
444	=over 4
445
446	=item $object->valid
447
448	Just because you have a perl object does not mean that the corresponding
449	C-level object still exists. If you try to access an object that has no
450	valid C counterpart anymore you get an exception at runtime. This method
451	can be used to test for existence of the C object part without causing an
452	exception.
453
454	=back
455
456	=cut
457
458	#############################################################################
459	# object support	729	# object support
460		730
461	sub instantiate {
462	my ($obj, $data) = @_;
463
464	$data = from_json $data;
465
466	for (@$data) {
467	my ($name, $args) = @$_;
468
469	$obj->attach ($name, %{$args || {} });
470	}
471	}
472
473	# basically do the same as instantiate, without calling instantiate
474	sub reattach {	731	sub reattach {
		732	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	733	my ($obj) = @_;
		734
		735	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		736
476	my $registry = $obj->registry;	737	my $registry = $obj->registry;
477		738
478	@$registry = ();	739	@$registry = ();
479		740
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	741	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	750	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	751	}
491	}	752	}
492	}	753	}
493		754
494	sub object_freezer_save {	755	cf::attachable->attach (
495	my ($filename, $rdata, $objs) = @_;
496
497	if (length $$rdata) {
498	warn sprintf "saving %s (%d,%d)\n",
499	$filename, length $$rdata, scalar @$objs;
500
501	if (open my $fh, ">:raw", "$filename~") {
502	chmod SAVE_MODE, $fh;
503	syswrite $fh, $$rdata;
504	close $fh;
505
506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
509	close $fh;
510	rename "$filename.pst~", "$filename.pst";
511	} else {
512	unlink "$filename.pst";
513	}
514
515	rename "$filename~", $filename;
516	} else {
517	warn "FATAL: $filename~: $!\n";
518	}
519	} else {
520	unlink $filename;
521	unlink "$filename.pst";
522	}
523	}
524
525	sub object_freezer_as_string {
526	my ($rdata, $objs) = @_;
527
528	use Data::Dumper;
529
530	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	756	prio => -1000000,
		757	on_instantiate => sub {
		758	my ($obj, $data) = @_;
		759
		760	$data = from_json $data;
		761
		762	for (@$data) {
		763	my ($name, $args) = @$_;
		764
		765	$obj->attach ($name, %{$args || {} });
		766	}
		767	},
		768	on_reattach => \&reattach,
554	on_clone => sub {	769	on_clone => sub {
555	my ($src, $dst) = @_;	770	my ($src, $dst) = @_;
556		771
557	@{$dst->registry} = @{$src->registry};	772	@{$dst->registry} = @{$src->registry};
558		773
…		…
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	776	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	777	if exists $src->{_attachment};
563	},	778	},
564	);	779	);
565		780
		781	sub object_freezer_save {
		782	my ($filename, $rdata, $objs) = @_;
		783
		784	sync_job {
		785	if (length $$rdata) {
		786	warn sprintf "saving %s (%d,%d)\n",
		787	$filename, length $$rdata, scalar @$objs;
		788
		789	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		790	chmod SAVE_MODE, $fh;
		791	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		792	aio_fsync $fh if $cf::USE_FSYNC;
		793	close $fh;
		794
		795	if (@$objs) {
		796	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		797	chmod SAVE_MODE, $fh;
		798	my $data = Storable::nfreeze { version => 1, objs => $objs };
		799	aio_write $fh, 0, (length $data), $data, 0;
		800	aio_fsync $fh if $cf::USE_FSYNC;
		801	close $fh;
		802	aio_rename "$filename.pst~", "$filename.pst";
		803	}
		804	} else {
		805	aio_unlink "$filename.pst";
		806	}
		807
		808	aio_rename "$filename~", $filename;
		809	} else {
		810	warn "FATAL: $filename~: $!\n";
		811	}
		812	} else {
		813	aio_unlink $filename;
		814	aio_unlink "$filename.pst";
		815	}
		816	}
		817	}
		818
		819	sub object_freezer_as_string {
		820	my ($rdata, $objs) = @_;
		821
		822	use Data::Dumper;
		823
		824	$$rdata . Dumper $objs
		825	}
		826
		827	sub object_thawer_load {
		828	my ($filename) = @_;
		829
		830	my ($data, $av);
		831
		832	(aio_load $filename, $data) >= 0
		833	or return;
		834
		835	unless (aio_stat "$filename.pst") {
		836	(aio_load "$filename.pst", $av) >= 0
		837	or return;
		838	$av = eval { (Storable::thaw $av)->{objs} };
		839	}
		840
		841	warn sprintf "loading %s (%d)\n",
		842	$filename, length $data, scalar @{$av || []};#d#
		843	return ($data, $av);
		844	}
		845
566	#############################################################################	846	#############################################################################
567	# command handling &c	847	# command handling &c
568		848
569	=item cf::register_command $name => \&callback($ob,$args);	849	=item cf::register_command $name => \&callback($ob,$args);
570		850
…		…
592	=cut	872	=cut
593		873
594	sub register_extcmd {	874	sub register_extcmd {
595	my ($name, $cb) = @_;	875	my ($name, $cb) = @_;
596		876
597	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";
599
600	$EXTCMD{$name} = [$cb, $caller];	877	$EXTCMD{$name} = $cb;
601	}	878	}
602		879
603	cf::player->attach (	880	cf::player->attach (
604	on_command => sub {	881	on_command => sub {
605	my ($pl, $name, $params) = @_;	882	my ($pl, $name, $params) = @_;
…		…
618		895
619	my $msg = eval { from_json $buf };	896	my $msg = eval { from_json $buf };
620		897
621	if (ref $msg) {	898	if (ref $msg) {
622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	899	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
623	if (my %reply = $cb->[0]->($pl, $msg)) {	900	if (my %reply = $cb->($pl, $msg)) {
624	$pl->ext_reply ($msg->{msgid}, %reply);	901	$pl->ext_reply ($msg->{msgid}, %reply);
625	}	902	}
626	}	903	}
627	} else {	904	} else {
628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	905	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
630		907
631	cf::override;	908	cf::override;
632	},	909	},
633	);	910	);
634		911
635	sub register {
636	my ($base, $pkg) = @_;
637
638	#TODO
639	}
640
641	sub load_extension {	912	sub load_extension {
642	my ($path) = @_;	913	my ($path) = @_;
643		914
644	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	915	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
645	my $base = $1;	916	my $base = $1;
646	my $pkg = $1;	917	my $pkg = $1;
647	$pkg =~ s/[^[:word:]]/_/g;	918	$pkg =~ s/[^[:word:]]/_/g;
648	$pkg = "ext::$pkg";	919	$pkg = "ext::$pkg";
649		920
650	warn "loading '$path' into '$pkg'\n";	921	warn "... loading '$path' into '$pkg'\n";
651		922
652	open my $fh, "<:utf8", $path	923	open my $fh, "<:utf8", $path
653	or die "$path: $!";	924	or die "$path: $!";
654		925
655	my $source =	926	my $source =
656	"package $pkg; use strict; use utf8;\n"	927	"package $pkg; use strict; use utf8;\n"
657	. "#line 1 \"$path\"\n{\n"	928	. "#line 1 \"$path\"\n{\n"
658	. (do { local $/; <$fh> })	929	. (do { local $/; <$fh> })
659	. "\n};\n1";	930	. "\n};\n1";
660		931
661	eval $source	932	unless (eval $source) {
662	or die $@ ? "$path: $@\n"	933	my $msg = $@ ? "$path: $@\n"
663	: "extension disabled.\n";	934	: "extension disabled.\n";
664		935	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
665	push @exts, $pkg;	936	warn $@;
666	$ext_pkg{$base} = $pkg;	937	warn "mandatory extension failed to load, exiting.\n";
667		938	exit 1;
668	# no strict 'refs';	939	}
669	# @{"$pkg\::ISA"} = ext::;	940	die $@;
670
671	register $base, $pkg;
672	}
673
674	sub unload_extension {
675	my ($pkg) = @_;
676
677	warn "removing extension $pkg\n";
678
679	# remove hooks
680	#TODO
681	# for my $idx (0 .. $#PLUGIN_EVENT) {
682	# delete $hook[$idx]{$pkg};
683	# }	941	}
684		942
685	# remove commands	943	push @EXTS, $pkg;
686	for my $name (keys %COMMAND) {
687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
688
689	if (@cb) {
690	$COMMAND{$name} = \@cb;
691	} else {
692	delete $COMMAND{$name};
693	}
694	}
695
696	# remove extcmds
697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
698	delete $EXTCMD{$name};
699	}
700
701	if (my $cb = $pkg->can ("unload")) {
702	eval {
703	$cb->($pkg);
704	1
705	} or warn "$pkg unloaded, but with errors: $@";
706	}
707
708	Symbol::delete_package $pkg;
709	}	944	}
710		945
711	sub load_extensions {	946	sub load_extensions {
712	for my $ext (<$LIBDIR/*.ext>) {	947	for my $ext (<$LIBDIR/*.ext>) {
713	next unless -r $ext;	948	next unless -r $ext;
…		…
717	} or warn "$ext not loaded: $@";	952	} or warn "$ext not loaded: $@";
718	}	953	}
719	}	954	}
720		955
721	#############################################################################	956	#############################################################################
722	# load/save/clean perl data associated with a map
723		957
724	*cf::mapsupport::on_clean = sub {	958	=head2 CORE EXTENSIONS
		959
		960	Functions and methods that extend core crossfire objects.
		961
		962	=cut
		963
		964	package cf::player;
		965
		966	use Coro::AIO;
		967
		968	=head3 cf::player
		969
		970	=over 4
		971
		972	=item cf::player::find $login
		973
		974	Returns the given player object, loading it if necessary (might block).
		975
		976	=cut
		977
		978	sub playerdir($) {
		979	"$PLAYERDIR/"
		980	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		981	}
		982
		983	sub path($) {
		984	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		985
		986	(playerdir $login) . "/playerdata"
		987	}
		988
		989	sub find_active($) {
		990	$cf::PLAYER{$_[0]}
		991	and $cf::PLAYER{$_[0]}->active
		992	and $cf::PLAYER{$_[0]}
		993	}
		994
		995	sub exists($) {
		996	my ($login) = @_;
		997
		998	$cf::PLAYER{$login}
		999	or cf::sync_job { !aio_stat path $login }
		1000	}
		1001
		1002	sub find($) {
		1003	return $cf::PLAYER{$_[0]} || do {
		1004	my $login = $_[0];
		1005
		1006	my $guard = cf::lock_acquire "user_find:$login";
		1007
		1008	$cf::PLAYER{$_[0]} || do {
		1009	# rename old playerfiles to new ones
		1010	#TODO: remove when no longer required
		1011	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1012	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1013	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1014	aio_unlink +(playerdir $login) . "/$login.pl";
		1015
		1016	my $pl = load_pl path $login
		1017	or return;
		1018	$cf::PLAYER{$login} = $pl
		1019	}
		1020	}
		1021	}
		1022
		1023	sub save($) {
		1024	my ($pl) = @_;
		1025
		1026	return if $pl->{deny_save};
		1027
		1028	my $path = path $pl;
		1029	my $guard = cf::lock_acquire "user_save:$path";
		1030
		1031	return if $pl->{deny_save};
		1032
		1033	aio_mkdir playerdir $pl, 0770;
		1034	$pl->{last_save} = $cf::RUNTIME;
		1035
		1036	$pl->save_pl ($path);
		1037	Coro::cede;
		1038	}
		1039
		1040	sub new($) {
		1041	my ($login) = @_;
		1042
		1043	my $self = create;
		1044
		1045	$self->ob->name ($login);
		1046	$self->{deny_save} = 1;
		1047
		1048	$cf::PLAYER{$login} = $self;
		1049
		1050	$self
		1051	}
		1052
		1053	=item $pl->quit_character
		1054
		1055	Nukes the player without looking back. If logged in, the connection will
		1056	be destroyed. May block for a long time.
		1057
		1058	=cut
		1059
		1060	sub quit_character {
		1061	my ($pl) = @_;
		1062
		1063	my $name = $pl->ob->name;
		1064
		1065	$pl->{deny_save} = 1;
		1066	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1067
		1068	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1069	$pl->deactivate;
		1070	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1071	$pl->ns->destroy if $pl->ns;
		1072
		1073	my $path = playerdir $pl;
		1074	my $temp = "$path~$cf::RUNTIME~deleting~";
		1075	aio_rename $path, $temp;
		1076	delete $cf::PLAYER{$pl->ob->name};
		1077	$pl->destroy;
		1078
		1079	my $prefix = qr<^~\Q$name\E/>;
		1080
		1081	# nuke player maps
		1082	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1083
		1084	IO::AIO::aio_rmtree $temp;
		1085	}
		1086
		1087	=item $pl->kick
		1088
		1089	Kicks a player out of the game. This destroys the connection.
		1090
		1091	=cut
		1092
		1093	sub kick {
		1094	my ($pl, $kicker) = @_;
		1095
		1096	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1097	$pl->killer ("kicked");
		1098	$pl->ns->destroy;
		1099	}
		1100
		1101	=item cf::player::list_logins
		1102
		1103	Returns am arrayref of all valid playernames in the system, can take a
		1104	while and may block, so not sync_job-capable, ever.
		1105
		1106	=cut
		1107
		1108	sub list_logins {
		1109	my $dirs = aio_readdir $PLAYERDIR
		1110	or return [];
		1111
		1112	my @logins;
		1113
		1114	for my $login (@$dirs) {
		1115	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1116	aio_read $fh, 0, 512, my $buf, 0 or next;
		1117	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1118
		1119	utf8::decode $login;
		1120	push @logins, $login;
		1121	}
		1122
		1123	\@logins
		1124	}
		1125
		1126	=item $player->maps
		1127
		1128	Returns an arrayref of map paths that are private for this
		1129	player. May block.
		1130
		1131	=cut
		1132
		1133	sub maps($) {
		1134	my ($pl) = @_;
		1135
		1136	$pl = ref $pl ? $pl->ob->name : $pl;
		1137
		1138	my $files = aio_readdir playerdir $pl
		1139	or return;
		1140
		1141	my @paths;
		1142
		1143	for (@$files) {
		1144	utf8::decode $_;
		1145	next if /\.(?:pl|pst)$/;
		1146	next unless /^$PATH_SEP/o;
		1147
		1148	push @paths, cf::map::normalise "~$pl/$_";
		1149	}
		1150
		1151	\@paths
		1152	}
		1153
		1154	=item $player->ext_reply ($msgid, %msg)
		1155
		1156	Sends an ext reply to the player.
		1157
		1158	=cut
		1159
		1160	sub ext_reply($$%) {
		1161	my ($self, $id, %msg) = @_;
		1162
		1163	$msg{msgid} = $id;
		1164
		1165	$self->send ("ext " . cf::to_json \%msg);
		1166	}
		1167
		1168	=item $player->ext_event ($type, %msg)
		1169
		1170	Sends an ext event to the client.
		1171
		1172	=cut
		1173
		1174	sub ext_event($$%) {
		1175	my ($self, $type, %msg) = @_;
		1176
		1177	$self->ns->ext_event ($type, %msg);
		1178	}
		1179
		1180	=head3 cf::region
		1181
		1182	=over 4
		1183
		1184	=cut
		1185
		1186	package cf::region;
		1187
		1188	=item cf::region::find_by_path $path
		1189
		1190	Tries to decuce the probable region for a map knowing only its path.
		1191
		1192	=cut
		1193
		1194	sub find_by_path($) {
		1195	my ($path) = @_;
		1196
		1197	my ($match, $specificity);
		1198
		1199	for my $region (list) {
		1200	if ($region->match && $path =~ $region->match) {
		1201	($match, $specificity) = ($region, $region->specificity)
		1202	if $region->specificity > $specificity;
		1203	}
		1204	}
		1205
		1206	$match
		1207	}
		1208
		1209	=back
		1210
		1211	=head3 cf::map
		1212
		1213	=over 4
		1214
		1215	=cut
		1216
		1217	package cf::map;
		1218
		1219	use Fcntl;
		1220	use Coro::AIO;
		1221
		1222	use overload
		1223	'""' => \&as_string,
		1224	fallback => 1;
		1225
		1226	our $MAX_RESET = 3600;
		1227	our $DEFAULT_RESET = 3000;
		1228
		1229	sub generate_random_map {
		1230	my ($self, $rmp) = @_;
		1231	# mit "rum" bekleckern, nicht
		1232	$self->_create_random_map (
		1233	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1234	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1235	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1236	$rmp->{exit_on_final_map},
		1237	$rmp->{xsize}, $rmp->{ysize},
		1238	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1239	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1240	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1241	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1242	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1243	(cf::region::find $rmp->{region}), $rmp->{custom}
		1244	)
		1245	}
		1246
		1247	=item cf::map->register ($regex, $prio)
		1248
		1249	Register a handler for the map path matching the given regex at the
		1250	givne priority (higher is better, built-in handlers have priority 0, the
		1251	default).
		1252
		1253	=cut
		1254
		1255	sub register {
		1256	my (undef, $regex, $prio) = @_;
		1257	my $pkg = caller;
		1258
		1259	no strict;
		1260	push @{"$pkg\::ISA"}, __PACKAGE__;
		1261
		1262	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1263	}
		1264
		1265	# also paths starting with '/'
		1266	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1267
		1268	sub thawer_merge {
		1269	my ($self, $merge) = @_;
		1270
		1271	# we have to keep some variables in memory intact
		1272	local $self->{path};
		1273	local $self->{load_path};
		1274	local $self->{deny_save};
		1275	local $self->{deny_reset};
		1276
		1277	$self->SUPER::thawer_merge ($merge);
		1278	}
		1279
		1280	sub normalise {
		1281	my ($path, $base) = @_;
		1282
		1283	$path = "$path"; # make sure its a string
		1284
		1285	$path =~ s/\.map$//;
		1286
		1287	# map plan:
		1288	#
		1289	# /! non-realised random map exit (special hack!)
		1290	# {... are special paths that are not being touched
		1291	# ?xxx/... are special absolute paths
		1292	# ?random/... random maps
		1293	# /... normal maps
		1294	# ~user/... per-player map of a specific user
		1295
		1296	$path =~ s/$PATH_SEP/\//go;
		1297
		1298	# treat it as relative path if it starts with
		1299	# something that looks reasonable
		1300	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1301	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1302
		1303	$base =~ s{[^/]+/?$}{};
		1304	$path = "$base/$path";
		1305	}
		1306
		1307	for ($path) {
		1308	redo if s{//}{/};
		1309	redo if s{/\.?/}{/};
		1310	redo if s{/[^/]+/\.\./}{/};
		1311	}
		1312
		1313	$path
		1314	}
		1315
		1316	sub new_from_path {
		1317	my (undef, $path, $base) = @_;
		1318
		1319	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1320
		1321	$path = normalise $path, $base;
		1322
		1323	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1324	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1325	my $self = bless cf::map::new, $pkg;
		1326	$self->{path} = $path; $self->path ($path);
		1327	$self->init; # pass $1 etc.
		1328	return $self;
		1329	}
		1330	}
		1331
		1332	Carp::carp "unable to resolve path '$path' (base '$base').";
		1333	()
		1334	}
		1335
		1336	sub init {
		1337	my ($self) = @_;
		1338
		1339	$self
		1340	}
		1341
		1342	sub as_string {
		1343	my ($self) = @_;
		1344
		1345	"$self->{path}"
		1346	}
		1347
		1348	# the displayed name, this is a one way mapping
		1349	sub visible_name {
		1350	&as_string
		1351	}
		1352
		1353	# the original (read-only) location
		1354	sub load_path {
		1355	my ($self) = @_;
		1356
		1357	"$MAPDIR/$self->{path}.map"
		1358	}
		1359
		1360	# the temporary/swap location
		1361	sub save_path {
		1362	my ($self) = @_;
		1363
		1364	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1365	"$TMPDIR/$path.map"
		1366	}
		1367
		1368	# the unique path, undef == no special unique path
		1369	sub uniq_path {
		1370	my ($self) = @_;
		1371
		1372	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1373	"$UNIQUEDIR/$path"
		1374	}
		1375
		1376	# and all this just because we cannot iterate over
		1377	# all maps in C++...
		1378	sub change_all_map_light {
		1379	my ($change) = @_;
		1380
		1381	$_->change_map_light ($change)
		1382	for grep $_->outdoor, values %cf::MAP;
		1383	}
		1384
		1385	sub unlink_save {
		1386	my ($self) = @_;
		1387
		1388	utf8::encode (my $save = $self->save_path);
		1389	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1390	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1391	}
		1392
		1393	sub load_header_from($) {
		1394	my ($self, $path) = @_;
		1395
		1396	utf8::encode $path;
		1397	#aio_open $path, O_RDONLY, 0
		1398	# or return;
		1399
		1400	$self->_load_header ($path)
		1401	or return;
		1402
		1403	$self->{load_path} = $path;
		1404
		1405	1
		1406	}
		1407
		1408	sub load_header_orig {
		1409	my ($self) = @_;
		1410
		1411	$self->load_header_from ($self->load_path)
		1412	}
		1413
		1414	sub load_header_temp {
		1415	my ($self) = @_;
		1416
		1417	$self->load_header_from ($self->save_path)
		1418	}
		1419
		1420	sub prepare_temp {
		1421	my ($self) = @_;
		1422
		1423	$self->last_access ((delete $self->{last_access})
		1424	|| $cf::RUNTIME); #d#
		1425	# safety
		1426	$self->{instantiate_time} = $cf::RUNTIME
		1427	if $self->{instantiate_time} > $cf::RUNTIME;
		1428	}
		1429
		1430	sub prepare_orig {
		1431	my ($self) = @_;
		1432
		1433	$self->{load_original} = 1;
		1434	$self->{instantiate_time} = $cf::RUNTIME;
		1435	$self->last_access ($cf::RUNTIME);
		1436	$self->instantiate;
		1437	}
		1438
		1439	sub load_header {
		1440	my ($self) = @_;
		1441
		1442	if ($self->load_header_temp) {
		1443	$self->prepare_temp;
		1444	} else {
		1445	$self->load_header_orig
		1446	or return;
		1447	$self->prepare_orig;
		1448	}
		1449
		1450	$self->default_region (cf::region::find_by_path $self->{path})
		1451	unless $self->default_region;
		1452
		1453	1
		1454	}
		1455
		1456	sub find;
		1457	sub find {
		1458	my ($path, $origin) = @_;
		1459
		1460	$path = normalise $path, $origin && $origin->path;
		1461
		1462	cf::lock_wait "map_find:$path";
		1463
		1464	$cf::MAP{$path} || do {
		1465	my $guard = cf::lock_acquire "map_find:$path";
		1466	my $map = new_from_path cf::map $path
		1467	or return;
		1468
		1469	$map->{last_save} = $cf::RUNTIME;
		1470
		1471	$map->load_header
		1472	or return;
		1473
		1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1475	# doing this can freeze the server in a sync job, obviously
		1476	#$cf::WAIT_FOR_TICK->wait;
		1477	$map->reset;
		1478	undef $guard;
		1479	return find $path;
		1480	}
		1481
		1482	$cf::MAP{$path} = $map
		1483	}
		1484	}
		1485
		1486	sub pre_load { }
		1487	sub post_load { }
		1488
		1489	sub load {
		1490	my ($self) = @_;
		1491
		1492	local $self->{deny_reset} = 1; # loading can take a long time
		1493
		1494	my $path = $self->{path};
		1495
		1496	{
		1497	my $guard = cf::lock_acquire "map_load:$path";
		1498
		1499	return if $self->in_memory != cf::MAP_SWAPPED;
		1500
		1501	$self->in_memory (cf::MAP_LOADING);
		1502
		1503	$self->alloc;
		1504
		1505	$self->pre_load;
		1506	Coro::cede;
		1507
		1508	$self->_load_objects ($self->{load_path}, 1)
		1509	or return;
		1510
		1511	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1512	if delete $self->{load_original};
		1513
		1514	if (my $uniq = $self->uniq_path) {
		1515	utf8::encode $uniq;
		1516	if (aio_open $uniq, O_RDONLY, 0) {
		1517	$self->clear_unique_items;
		1518	$self->_load_objects ($uniq, 0);
		1519	}
		1520	}
		1521
		1522	Coro::cede;
		1523	# now do the right thing for maps
		1524	$self->link_multipart_objects;
		1525	$self->difficulty ($self->estimate_difficulty)
		1526	unless $self->difficulty;
		1527	Coro::cede;
		1528
		1529	unless ($self->{deny_activate}) {
		1530	$self->decay_objects;
		1531	$self->fix_auto_apply;
		1532	$self->update_buttons;
		1533	Coro::cede;
		1534	$self->set_darkness_map;
		1535	Coro::cede;
		1536	$self->activate;
		1537	}
		1538
		1539	$self->in_memory (cf::MAP_IN_MEMORY);
		1540	}
		1541
		1542	$self->post_load;
		1543	}
		1544
		1545	sub customise_for {
		1546	my ($self, $ob) = @_;
		1547
		1548	return find "~" . $ob->name . "/" . $self->{path}
		1549	if $self->per_player;
		1550
		1551	$self
		1552	}
		1553
		1554	# find and load all maps in the 3x3 area around a map
		1555	sub load_diag {
725	my ($map) = @_;	1556	my ($map) = @_;
726		1557
727	my $path = $map->tmpname;	1558	my @diag; # diagonal neighbours
728	defined $path or return;
729		1559
730	unlink "$path.pst";	1560	for (0 .. 3) {
731	};	1561	my $neigh = $map->tile_path ($_)
		1562	or next;
		1563	$neigh = find $neigh, $map
		1564	or next;
		1565	$neigh->load;
732		1566
733	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1567	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1568	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1569	}
734		1570
735	#############################################################################	1571	for (@diag) {
736	# load/save perl data associated with player->ob objects	1572	my $neigh = find @$_
737		1573	or next;
738	sub all_objects(@) {	1574	$neigh->load;
739	@_, map all_objects ($_->inv), @_	1575	}
740	}	1576	}
741		1577
742	# TODO: compatibility cruft, remove when no longer needed	1578	sub find_sync {
743	cf::player->attach (	1579	my ($path, $origin) = @_;
744	on_load => sub {
745	my ($pl, $path) = @_;
746		1580
747	for my $o (all_objects $pl->ob) {	1581	cf::sync_job { find $path, $origin }
748	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1582	}
749	$o->set_ob_key_value ("_perl_data");
750		1583
751	%$o = %{ Storable::thaw pack "H*", $value };	1584	sub do_load_sync {
		1585	my ($map) = @_;
		1586
		1587	cf::sync_job { $map->load };
		1588	}
		1589
		1590	our %MAP_PREFETCH;
		1591	our $MAP_PREFETCHER = undef;
		1592
		1593	sub find_async {
		1594	my ($path, $origin) = @_;
		1595
		1596	$path = normalise $path, $origin && $origin->{path};
		1597
		1598	if (my $map = $cf::MAP{$path}) {
		1599	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1600	}
		1601
		1602	undef $MAP_PREFETCH{$path};
		1603	$MAP_PREFETCHER ||= cf::async {
		1604	while (%MAP_PREFETCH) {
		1605	for my $path (keys %MAP_PREFETCH) {
		1606	my $map = find $path
		1607	or next;
		1608	$map->load;
		1609
		1610	delete $MAP_PREFETCH{$path};
752	}	1611	}
753	}	1612	}
		1613	undef $MAP_PREFETCHER;
		1614	};
		1615	$MAP_PREFETCHER->prio (6);
		1616
		1617	()
		1618	}
		1619
		1620	sub save {
		1621	my ($self) = @_;
		1622
		1623	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1624
		1625	$self->{last_save} = $cf::RUNTIME;
		1626
		1627	return unless $self->dirty;
		1628
		1629	my $save = $self->save_path; utf8::encode $save;
		1630	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1631
		1632	$self->{load_path} = $save;
		1633
		1634	return if $self->{deny_save};
		1635
		1636	local $self->{last_access} = $self->last_access;#d#
		1637
		1638	cf::async {
		1639	$_->contr->save for $self->players;
		1640	};
		1641
		1642	if ($uniq) {
		1643	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1644	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1645	} else {
		1646	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
754	},	1647	}
755	);	1648	}
756		1649
757	#############################################################################	1650	sub swap_out {
		1651	my ($self) = @_;
758		1652
759	=head2 CORE EXTENSIONS	1653	# save first because save cedes
		1654	$self->save;
760		1655
761	Functions and methods that extend core crossfire objects.	1656	my $lock = cf::lock_acquire "map_data:" . $self->path;
762		1657
763	=head3 cf::player	1658	return if $self->players;
		1659	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1660	return if $self->{deny_save};
		1661
		1662	$self->clear;
		1663	$self->in_memory (cf::MAP_SWAPPED);
		1664	}
		1665
		1666	sub reset_at {
		1667	my ($self) = @_;
		1668
		1669	# TODO: safety, remove and allow resettable per-player maps
		1670	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1671	return 1e99 if $self->{deny_reset};
		1672
		1673	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1674	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1675
		1676	$time + $to
		1677	}
		1678
		1679	sub should_reset {
		1680	my ($self) = @_;
		1681
		1682	$self->reset_at <= $cf::RUNTIME
		1683	}
		1684
		1685	sub reset {
		1686	my ($self) = @_;
		1687
		1688	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1689
		1690	return if $self->players;
		1691	return if $self->isa ("ext::map_per_player");#d#
		1692
		1693	warn "resetting map ", $self->path;#d#
		1694
		1695	$self->in_memory (cf::MAP_SWAPPED);
		1696
		1697	# need to save uniques path
		1698	unless ($self->{deny_save}) {
		1699	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1700
		1701	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1702	if $uniq;
		1703	}
		1704
		1705	delete $cf::MAP{$self->path};
		1706
		1707	$self->clear;
		1708
		1709	$_->clear_links_to ($self) for values %cf::MAP;
		1710
		1711	$self->unlink_save;
		1712	$self->destroy;
		1713	}
		1714
		1715	my $nuke_counter = "aaaa";
		1716
		1717	sub nuke {
		1718	my ($self) = @_;
		1719
		1720	delete $cf::MAP{$self->path};
		1721
		1722	$self->unlink_save;
		1723
		1724	bless $self, "cf::map";
		1725	delete $self->{deny_reset};
		1726	$self->{deny_save} = 1;
		1727	$self->reset_timeout (1);
		1728	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1729
		1730	$cf::MAP{$self->path} = $self;
		1731
		1732	$self->reset; # polite request, might not happen
		1733	}
		1734
		1735	=item cf::map::unique_maps
		1736
		1737	Returns an arrayref of paths of all shared maps that have
		1738	instantiated unique items. May block.
		1739
		1740	=cut
		1741
		1742	sub unique_maps() {
		1743	my $files = aio_readdir $UNIQUEDIR
		1744	or return;
		1745
		1746	my @paths;
		1747
		1748	for (@$files) {
		1749	utf8::decode $_;
		1750	next if /\.pst$/;
		1751	next unless /^$PATH_SEP/o;
		1752
		1753	push @paths, cf::map::normalise $_;
		1754	}
		1755
		1756	\@paths
		1757	}
		1758
		1759	package cf;
		1760
		1761	=back
		1762
		1763	=head3 cf::object
		1764
		1765	=cut
		1766
		1767	package cf::object;
764		1768
765	=over 4	1769	=over 4
766		1770
767	=item cf::player::exists $login	1771	=item $ob->inv_recursive
768		1772
769	Returns true when the given account exists.	1773	Returns the inventory of the object _and_ their inventories, recursively.
770		1774
771	=cut	1775	=cut
772		1776
773	sub cf::player::exists($) {	1777	sub inv_recursive_;
774	cf::player::find $_[0]	1778	sub inv_recursive_ {
775	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1779	map { $_, inv_recursive_ $_->inv } @_
776	}	1780	}
777		1781
778	=item $player->ext_reply ($msgid, $msgtype, %msg)	1782	sub inv_recursive {
779		1783	inv_recursive_ inv $_[0]
780	Sends an ext reply to the player.
781
782	=cut
783
784	sub cf::player::ext_reply($$$%) {
785	my ($self, $id, %msg) = @_;
786
787	$msg{msgid} = $id;
788
789	$self->send ("ext " . to_json \%msg);
790	}	1784	}
		1785
		1786	package cf;
791		1787
792	=back	1788	=back
793		1789
794	=head3 cf::object::player	1790	=head3 cf::object::player
795		1791
…		…
833	(ref $cf::CFG{"may_$access"}	1829	(ref $cf::CFG{"may_$access"}
834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
835	: $cf::CFG{"may_$access"})	1831	: $cf::CFG{"may_$access"})
836	}	1832	}
837		1833
		1834	=item $player_object->enter_link
		1835
		1836	Freezes the player and moves him/her to a special map (C<{link}>).
		1837
		1838	The player should be reasonably safe there for short amounts of time. You
		1839	I<MUST> call C<leave_link> as soon as possible, though.
		1840
		1841	Will never block.
		1842
		1843	=item $player_object->leave_link ($map, $x, $y)
		1844
		1845	Moves the player out of the special C<{link}> map onto the specified
		1846	map. If the map is not valid (or omitted), the player will be moved back
		1847	to the location he/she was before the call to C<enter_link>, or, if that
		1848	fails, to the emergency map position.
		1849
		1850	Might block.
		1851
		1852	=cut
		1853
		1854	sub link_map {
		1855	unless ($LINK_MAP) {
		1856	$LINK_MAP = cf::map::find "{link}"
		1857	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1858	$LINK_MAP->load;
		1859	}
		1860
		1861	$LINK_MAP
		1862	}
		1863
		1864	sub cf::object::player::enter_link {
		1865	my ($self) = @_;
		1866
		1867	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1868
		1869	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1870	if $self->map;
		1871
		1872	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1873	}
		1874
		1875	sub cf::object::player::leave_link {
		1876	my ($self, $map, $x, $y) = @_;
		1877
		1878	my $link_pos = delete $self->{_link_pos};
		1879
		1880	unless ($map) {
		1881	# restore original map position
		1882	($map, $x, $y) = @{ $link_pos || [] };
		1883	$map = cf::map::find $map;
		1884
		1885	unless ($map) {
		1886	($map, $x, $y) = @$EMERGENCY_POSITION;
		1887	$map = cf::map::find $map
		1888	or die "FATAL: cannot load emergency map\n";
		1889	}
		1890	}
		1891
		1892	($x, $y) = (-1, -1)
		1893	unless (defined $x) && (defined $y);
		1894
		1895	# use -1 or undef as default coordinates, not 0, 0
		1896	($x, $y) = ($map->enter_x, $map->enter_y)
		1897	if $x <=0 && $y <= 0;
		1898
		1899	$map->load;
		1900	$map->load_diag;
		1901
		1902	return unless $self->contr->active;
		1903	$self->activate_recursive;
		1904
		1905	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1906	$self->enter_map ($map, $x, $y);
		1907	}
		1908
		1909	cf::player->attach (
		1910	on_logout => sub {
		1911	my ($pl) = @_;
		1912
		1913	# abort map switching before logout
		1914	if ($pl->ob->{_link_pos}) {
		1915	cf::sync_job {
		1916	$pl->ob->leave_link
		1917	};
		1918	}
		1919	},
		1920	on_login => sub {
		1921	my ($pl) = @_;
		1922
		1923	# try to abort aborted map switching on player login :)
		1924	# should happen only on crashes
		1925	if ($pl->ob->{_link_pos}) {
		1926	$pl->ob->enter_link;
		1927	(async {
		1928	$pl->ob->reply (undef,
		1929	"There was an internal problem at your last logout, "
		1930	. "the server will try to bring you to your intended destination in a second.",
		1931	cf::NDI_RED);
		1932	# we need this sleep as the login has a concurrent enter_exit running
		1933	# and this sleep increases chances of the player not ending up in scorn
		1934	Coro::Timer::sleep 1;
		1935	$pl->ob->leave_link;
		1936	})->prio (2);
		1937	}
		1938	},
		1939	);
		1940
		1941	=item $player_object->goto ($path, $x, $y)
		1942
		1943	=cut
		1944
		1945	sub cf::object::player::goto {
		1946	my ($self, $path, $x, $y) = @_;
		1947
		1948	$self->enter_link;
		1949
		1950	(async {
		1951	my $map = eval {
		1952	my $map = cf::map::find $path;
		1953	$map = $map->customise_for ($self) if $map;
		1954	$map
		1955	} or
		1956	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1957
		1958	$self->leave_link ($map, $x, $y);
		1959	})->prio (1);
		1960	}
		1961
		1962	=item $player_object->enter_exit ($exit_object)
		1963
		1964	=cut
		1965
		1966	sub parse_random_map_params {
		1967	my ($spec) = @_;
		1968
		1969	my $rmp = { # defaults
		1970	xsize => (cf::rndm 15, 40),
		1971	ysize => (cf::rndm 15, 40),
		1972	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1973	#layout => string,
		1974	};
		1975
		1976	for (split /\n/, $spec) {
		1977	my ($k, $v) = split /\s+/, $_, 2;
		1978
		1979	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1980	}
		1981
		1982	$rmp
		1983	}
		1984
		1985	sub prepare_random_map {
		1986	my ($exit) = @_;
		1987
		1988	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1989
		1990	# all this does is basically replace the /! path by
		1991	# a new random map path (?random/...) with a seed
		1992	# that depends on the exit object
		1993
		1994	my $rmp = parse_random_map_params $exit->msg;
		1995
		1996	if ($exit->map) {
		1997	$rmp->{region} = $exit->region->name;
		1998	$rmp->{origin_map} = $exit->map->path;
		1999	$rmp->{origin_x} = $exit->x;
		2000	$rmp->{origin_y} = $exit->y;
		2001	}
		2002
		2003	$rmp->{random_seed} ||= $exit->random_seed;
		2004
		2005	my $data = cf::to_json $rmp;
		2006	my $md5 = Digest::MD5::md5_hex $data;
		2007	my $meta = "$RANDOMDIR/$md5.meta";
		2008
		2009	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2010	aio_write $fh, 0, (length $data), $data, 0;
		2011	undef $fh;
		2012	aio_rename "$meta~", $meta;
		2013
		2014	$exit->slaying ("?random/$md5");
		2015	$exit->msg (undef);
		2016	}
		2017	}
		2018
		2019	sub cf::object::player::enter_exit {
		2020	my ($self, $exit) = @_;
		2021
		2022	return unless $self->type == cf::PLAYER;
		2023
		2024	if ($exit->slaying eq "/!") {
		2025	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2026	# the problem is that $exit might not survive long enough
		2027	# so it needs to be done right now, right here
		2028	cf::sync_job { prepare_random_map $exit };
		2029	}
		2030
		2031	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2032	my $hp = $exit->stats->hp;
		2033	my $sp = $exit->stats->sp;
		2034
		2035	$self->enter_link;
		2036
		2037	(async {
		2038	$self->deactivate_recursive; # just to be sure
		2039	unless (eval {
		2040	$self->goto ($slaying, $hp, $sp);
		2041
		2042	1;
		2043	}) {
		2044	$self->message ("Something went wrong deep within the crossfire server. "
		2045	. "I'll try to bring you back to the map you were before. "
		2046	. "Please report this to the dungeon master!",
		2047	cf::NDI_UNIQUE | cf::NDI_RED);
		2048
		2049	warn "ERROR in enter_exit: $@";
		2050	$self->leave_link;
		2051	}
		2052	})->prio (1);
		2053	}
		2054
838	=head3 cf::client	2055	=head3 cf::client
839		2056
840	=over 4	2057	=over 4
841		2058
842	=item $client->send_drawinfo ($text, $flags)	2059	=item $client->send_drawinfo ($text, $flags)
…		…
848		2065
849	sub cf::client::send_drawinfo {	2066	sub cf::client::send_drawinfo {
850	my ($self, $text, $flags) = @_;	2067	my ($self, $text, $flags) = @_;
851		2068
852	utf8::encode $text;	2069	utf8::encode $text;
853	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2070	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
854	}	2071	}
855		2072
		2073	=item $client->ext_event ($type, %msg)
		2074
		2075	Sends an exti event to the client.
		2076
		2077	=cut
		2078
		2079	sub cf::client::ext_event($$%) {
		2080	my ($self, $type, %msg) = @_;
		2081
		2082	$msg{msgtype} = "event_$type";
		2083	$self->send_packet ("ext " . cf::to_json \%msg);
		2084	}
856		2085
857	=item $success = $client->query ($flags, "text", \&cb)	2086	=item $success = $client->query ($flags, "text", \&cb)
858		2087
859	Queues a query to the client, calling the given callback with	2088	Queues a query to the client, calling the given callback with
860	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2089	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
885	on_reply => sub {	2114	on_reply => sub {
886	my ($ns, $msg) = @_;	2115	my ($ns, $msg) = @_;
887		2116
888	# this weird shuffling is so that direct followup queries	2117	# this weird shuffling is so that direct followup queries
889	# get handled first	2118	# get handled first
890	my $queue = delete $ns->{query_queue};	2119	my $queue = delete $ns->{query_queue}
		2120	or return; # be conservative, not sure how that can happen, but we saw a crash here
891		2121
892	(shift @$queue)->[1]->($msg);	2122	(shift @$queue)->[1]->($msg);
		2123	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
893		2124
894	push @{ $ns->{query_queue} }, @$queue;	2125	push @{ $ns->{query_queue} }, @$queue;
895		2126
896	if (@{ $ns->{query_queue} } == @$queue) {	2127	if (@{ $ns->{query_queue} } == @$queue) {
897	if (@$queue) {	2128	if (@$queue) {
898	$ns->send_packet ($ns->{query_queue}[0][0]);	2129	$ns->send_packet ($ns->{query_queue}[0][0]);
899	} else {	2130	} else {
900	$ns->state (ST_PLAYING);	2131	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
901	}	2132	}
902	}	2133	}
		2134	},
		2135	);
		2136
		2137	=item $client->async (\&cb)
		2138
		2139	Create a new coroutine, running the specified callback. The coroutine will
		2140	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2141	or loss of connection).
		2142
		2143	=cut
		2144
		2145	sub cf::client::async {
		2146	my ($self, $cb) = @_;
		2147
		2148	my $coro = &Coro::async ($cb);
		2149
		2150	$coro->on_destroy (sub {
		2151	delete $self->{_coro}{$coro+0};
		2152	});
		2153
		2154	$self->{_coro}{$coro+0} = $coro;
		2155
		2156	$coro
		2157	}
		2158
		2159	cf::client->attach (
		2160	on_destroy => sub {
		2161	my ($ns) = @_;
		2162
		2163	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
903	},	2164	},
904	);	2165	);
905		2166
906	=back	2167	=back
907		2168
…		…
925		2186
926	# here we export the classes and methods available to script code	2187	# here we export the classes and methods available to script code
927		2188
928	=pod	2189	=pod
929		2190
930	The following fucntions and emthods are available within a safe environment:	2191	The following functions and methods are available within a safe environment:
931		2192
932	cf::object contr pay_amount pay_player map	2193	cf::object contr pay_amount pay_player map
933	cf::object::player player	2194	cf::object::player player
934	cf::player peaceful	2195	cf::player peaceful
935	cf::map trigger	2196	cf::map trigger
…		…
1020	#############################################################################	2281	#############################################################################
1021		2282
1022	=head2 EXTENSION DATABASE SUPPORT	2283	=head2 EXTENSION DATABASE SUPPORT
1023		2284
1024	Crossfire maintains a very simple database for extension use. It can	2285	Crossfire maintains a very simple database for extension use. It can
1025	currently store anything that can be serialised using Storable, which	2286	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1026	excludes objects.	2287	convert to/from binary).
1027		2288
1028	The parameter C<$family> should best start with the name of the extension	2289	The parameter C<$family> should best start with the name of the extension
1029	using it, it should be unique.	2290	using it, it should be unique.
1030		2291
1031	=over 4	2292	=over 4
1032		2293
1033	=item $hashref = cf::db_get $family
1034
1035	Return a hashref for use by the extension C<$family>, which can be
1036	modified. After modifications, you have to call C<cf::db_dirty> or
1037	C<cf::db_sync>.
1038
1039	=item $value = cf::db_get $family => $key	2294	=item $value = cf::db_get $family => $key
1040		2295
1041	Returns a single value from the database	2296	Returns a single value from the database.
1042
1043	=item cf::db_put $family => $hashref
1044
1045	Stores the given family hashref into the database. Updates are delayed, if
1046	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1047		2297
1048	=item cf::db_put $family => $key => $value	2298	=item cf::db_put $family => $key => $value
1049		2299
1050	Stores the given C<$value> in the family hash. Updates are delayed, if you	2300	Stores the given C<$value> in the family.
1051	want the data to be synced to disk immediately, use C<cf::db_sync>.
1052
1053	=item cf::db_dirty
1054
1055	Marks the database as dirty, to be updated at a later time.
1056
1057	=item cf::db_sync
1058
1059	Immediately write the database to disk I<if it is dirty>.
1060		2301
1061	=cut	2302	=cut
1062		2303
1063	our $DB;	2304	our $DB;
1064		2305
1065	{	2306	sub db_init {
1066	my $path = cf::localdir . "/database.pst";	2307	unless ($DB) {
		2308	$DB = BDB::db_create $DB_ENV;
1067		2309
1068	sub db_load() {	2310	cf::sync_job {
1069	warn "loading database $path\n";#d# remove later	2311	eval {
1070	$DB = stat $path ? Storable::retrieve $path : { };	2312	$DB->set_flags (BDB::CHKSUM);
1071	}
1072		2313
1073	my $pid;	2314	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1074		2315	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1075	sub db_save() {	2316	cf::cleanup "db_open(db): $!" if $!;
1076	warn "saving database $path\n";#d# remove later	2317	};
1077	waitpid $pid, 0 if $pid;	2318	cf::cleanup "db_open(db): $@" if $@;
1078	if (0 == ($pid = fork)) {
1079	$DB->{_meta}{version} = 1;
1080	Storable::nstore $DB, "$path~";
1081	rename "$path~", $path;
1082	cf::_exit 0 if defined $pid;
1083	}	2319	};
1084	}
1085
1086	my $dirty;
1087
1088	sub db_sync() {
1089	db_save if $dirty;
1090	undef $dirty;
1091	}
1092
1093	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1094	db_sync;
1095	});	2320	}
		2321	}
1096		2322
1097	sub db_dirty() {
1098	$dirty = 1;
1099	$idle->start;
1100	}
1101
1102	sub db_get($;$) {	2323	sub db_get($$) {
1103	@_ >= 2	2324	my $key = "$_[0]/$_[1]";
1104	? $DB->{$_[0]}{$_[1]}
1105	: ($DB->{$_[0]} ||= { })
1106	}
1107		2325
		2326	cf::sync_job {
		2327	BDB::db_get $DB, undef, $key, my $data;
		2328
		2329	$! ? ()
		2330	: $data
		2331	}
		2332	}
		2333
1108	sub db_put($$;$) {	2334	sub db_put($$$) {
1109	if (@_ >= 3) {	2335	BDB::dbreq_pri 4;
1110	$DB->{$_[0]}{$_[1]} = $_[2];	2336	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1111	} else {	2337	}
1112	$DB->{$_[0]} = $_[1];
1113	}
1114	db_dirty;
1115	}
1116		2338
1117	cf::global->attach (	2339	=item cf::cache $id => [$paths...], $processversion => $process
1118	prio => 10000,	2340
1119	on_cleanup => sub {	2341	Generic caching function that returns the value of the resource $id,
1120	db_sync;	2342	caching and regenerating as required.
		2343
		2344	This function can block.
		2345
		2346	=cut
		2347
		2348	sub cache {
		2349	my ($id, $src, $processversion, $process) = @_;
		2350
		2351	my $meta =
		2352	join "\x00",
		2353	$processversion,
		2354	map {
		2355	aio_stat $_
		2356	and Carp::croak "$_: $!";
		2357
		2358	($_, (stat _)[7,9])
		2359	} @$src;
		2360
		2361	my $dbmeta = db_get cache => "$id/meta";
		2362	if ($dbmeta ne $meta) {
		2363	# changed, we may need to process
		2364
		2365	my @data;
		2366	my $md5;
		2367
		2368	for (0 .. $#$src) {
		2369	0 <= aio_load $src->[$_], $data[$_]
		2370	or Carp::croak "$src->[$_]: $!";
1121	},	2371	}
1122	);	2372
		2373	# if processing is expensive, check
		2374	# checksum first
		2375	if (1) {
		2376	$md5 =
		2377	join "\x00",
		2378	$processversion,
		2379	map {
		2380	Coro::cede;
		2381	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2382	} 0.. $#$src;
		2383
		2384
		2385	my $dbmd5 = db_get cache => "$id/md5";
		2386	if ($dbmd5 eq $md5) {
		2387	db_put cache => "$id/meta", $meta;
		2388
		2389	return db_get cache => "$id/data";
		2390	}
		2391	}
		2392
		2393	my $t1 = Time::HiRes::time;
		2394	my $data = $process->(\@data);
		2395	my $t2 = Time::HiRes::time;
		2396
		2397	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2398
		2399	db_put cache => "$id/data", $data;
		2400	db_put cache => "$id/md5" , $md5;
		2401	db_put cache => "$id/meta", $meta;
		2402
		2403	return $data;
		2404	}
		2405
		2406	db_get cache => "$id/data"
1123	}	2407	}
		2408
		2409	=item fork_call { }, $args
		2410
		2411	Executes the given code block with the given arguments in a seperate
		2412	process, returning the results. Everything must be serialisable with
		2413	Coro::Storable. May, of course, block. Note that the executed sub may
		2414	never block itself or use any form of Event handling.
		2415
		2416	=cut
		2417
		2418	sub fork_call(&@) {
		2419	my ($cb, @args) = @_;
		2420
		2421	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2422	# or die "socketpair: $!";
		2423	pipe my $fh1, my $fh2
		2424	or die "pipe: $!";
		2425
		2426	if (my $pid = fork) {
		2427	close $fh2;
		2428
		2429	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2430	$res = Coro::Storable::thaw $res;
		2431
		2432	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2433
		2434	die $$res unless "ARRAY" eq ref $res;
		2435
		2436	return wantarray ? @$res : $res->[-1];
		2437	} else {
		2438	local $SIG{__WARN__};
		2439	eval {
		2440	local $SIG{__DIE__};
		2441	close $fh1;
		2442
		2443	my @res = eval { $cb->(@args) };
		2444	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2445	};
		2446
		2447	warn $@ if $@;
		2448	_exit 0;
		2449	}
		2450	}
		2451
		2452
1124		2453
1125	#############################################################################	2454	#############################################################################
1126	# the server's main()	2455	# the server's init and main functions
		2456
		2457	sub load_facedata($) {
		2458	my ($path) = @_;
		2459
		2460	warn "loading facedata from $path\n";
		2461
		2462	my $facedata;
		2463	0 < aio_load $path, $facedata
		2464	or die "$path: $!";
		2465
		2466	$facedata = Coro::Storable::thaw $facedata;
		2467
		2468	$facedata->{version} == 2
		2469	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2470
		2471	{
		2472	my $faces = $facedata->{faceinfo};
		2473
		2474	while (my ($face, $info) = each %$faces) {
		2475	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2476	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2477	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2478	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2479	Coro::cede;
		2480	}
		2481
		2482	while (my ($face, $info) = each %$faces) {
		2483	next unless $info->{smooth};
		2484	my $idx = cf::face::find $face
		2485	or next;
		2486	if (my $smooth = cf::face::find $info->{smooth}) {
		2487	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2488	} else {
		2489	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2490	}
		2491	Coro::cede;
		2492	}
		2493	}
		2494
		2495	{
		2496	my $anims = $facedata->{animinfo};
		2497
		2498	while (my ($anim, $info) = each %$anims) {
		2499	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2500	Coro::cede;
		2501	}
		2502
		2503	cf::anim::invalidate_all; # d'oh
		2504	}
		2505
		2506	1
		2507	}
		2508
		2509	sub reload_regions {
		2510	load_resource_file "$MAPDIR/regions"
		2511	or die "unable to load regions file\n";
		2512	}
		2513
		2514	sub reload_facedata {
		2515	load_facedata "$DATADIR/facedata"
		2516	or die "unable to load facedata\n";
		2517	}
		2518
		2519	sub reload_archetypes {
		2520	load_resource_file "$DATADIR/archetypes"
		2521	or die "unable to load archetypes\n";
		2522	}
		2523
		2524	sub reload_treasures {
		2525	load_resource_file "$DATADIR/treasures"
		2526	or die "unable to load treasurelists\n";
		2527	}
		2528
		2529	sub reload_resources {
		2530	warn "reloading resource files...\n";
		2531
		2532	reload_regions;
		2533	reload_facedata;
		2534	reload_archetypes;
		2535	reload_treasures;
		2536
		2537	warn "finished reloading resource files\n";
		2538	}
		2539
		2540	sub init {
		2541	reload_resources;
		2542	}
1127		2543
1128	sub cfg_load {	2544	sub cfg_load {
1129	open my $fh, "<:utf8", cf::confdir . "/config"	2545	open my $fh, "<:utf8", "$CONFDIR/config"
1130	or return;	2546	or return;
1131		2547
1132	local $/;	2548	local $/;
1133	*CFG = YAML::Syck::Load <$fh>;	2549	*CFG = YAML::Syck::Load <$fh>;
		2550
		2551	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2552
		2553	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2554	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2555
		2556	if (exists $CFG{mlockall}) {
		2557	eval {
		2558	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2559	and die "WARNING: m(un)lockall failed: $!\n";
		2560	};
		2561	warn $@ if $@;
		2562	}
1134	}	2563	}
1135		2564
1136	sub main {	2565	sub main {
		2566	# we must not ever block the main coroutine
		2567	local $Coro::idle = sub {
		2568	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2569	(async {
		2570	Event::one_event;
		2571	})->prio (Coro::PRIO_MAX);
		2572	};
		2573
1137	cfg_load;	2574	cfg_load;
1138	db_load;	2575	db_init;
1139	load_extensions;	2576	load_extensions;
		2577
		2578	$TICK_WATCHER->start;
1140	Event::loop;	2579	Event::loop;
1141	}	2580	}
1142		2581
1143	#############################################################################	2582	#############################################################################
1144	# initialisation	2583	# initialisation and cleanup
1145		2584
1146	sub _perl_reload(&) {	2585	# install some emergency cleanup handlers
		2586	BEGIN {
		2587	for my $signal (qw(INT HUP TERM)) {
		2588	Event->signal (
		2589	reentrant => 0,
		2590	data => WF_AUTOCANCEL,
		2591	signal => $signal,
		2592	prio => 0,
		2593	cb => sub {
		2594	cf::cleanup "SIG$signal";
		2595	},
		2596	);
		2597	}
		2598	}
		2599
		2600	sub emergency_save() {
		2601	my $freeze_guard = cf::freeze_mainloop;
		2602
		2603	warn "enter emergency perl save\n";
		2604
		2605	cf::sync_job {
		2606	# use a peculiar iteration method to avoid tripping on perl
		2607	# refcount bugs in for. also avoids problems with players
		2608	# and maps saved/destroyed asynchronously.
		2609	warn "begin emergency player save\n";
		2610	for my $login (keys %cf::PLAYER) {
		2611	my $pl = $cf::PLAYER{$login} or next;
		2612	$pl->valid or next;
		2613	$pl->save;
		2614	}
		2615	warn "end emergency player save\n";
		2616
		2617	warn "begin emergency map save\n";
		2618	for my $path (keys %cf::MAP) {
		2619	my $map = $cf::MAP{$path} or next;
		2620	$map->valid or next;
		2621	$map->save;
		2622	}
		2623	warn "end emergency map save\n";
		2624
		2625	warn "begin emergency database checkpoint\n";
		2626	BDB::db_env_txn_checkpoint $DB_ENV;
		2627	warn "end emergency database checkpoint\n";
		2628	};
		2629
		2630	warn "leave emergency perl save\n";
		2631	}
		2632
		2633	sub post_cleanup {
1147	my ($msg) = @_;	2634	my ($make_core) = @_;
1148		2635
1149	$msg->("reloading...");	2636	warn Carp::longmess "post_cleanup backtrace"
		2637	if $make_core;
		2638	}
1150		2639
1151	eval {	2640	sub do_reload_perl() {
1152	# cancel all watchers	2641	# can/must only be called in main
		2642	if ($Coro::current != $Coro::main) {
		2643	warn "can only reload from main coroutine";
		2644	return;
		2645	}
		2646
		2647	warn "reloading...";
		2648
		2649	warn "entering sync_job";
		2650
		2651	cf::sync_job {
		2652	cf::write_runtime; # external watchdog should not bark
		2653	cf::emergency_save;
		2654	cf::write_runtime; # external watchdog should not bark
		2655
		2656	warn "syncing database to disk";
		2657	BDB::db_env_txn_checkpoint $DB_ENV;
		2658
		2659	# if anything goes wrong in here, we should simply crash as we already saved
		2660
		2661	warn "cancelling all WF_AUTOCANCEL watchers";
1153	for (Event::all_watchers) {	2662	for (Event::all_watchers) {
1154	$_->cancel if $_->data & WF_AUTOCANCEL;	2663	$_->cancel if $_->data & WF_AUTOCANCEL;
1155	}	2664	}
1156		2665
1157	# unload all extensions	2666	warn "flushing outstanding aio requests";
1158	for (@exts) {	2667	for (;;) {
1159	$msg->("unloading <$_>");	2668	BDB::flush;
1160	unload_extension $_;	2669	IO::AIO::flush;
		2670	Coro::cede;
		2671	last unless IO::AIO::nreqs || BDB::nreqs;
		2672	warn "iterate...";
		2673	}
		2674
		2675	++$RELOAD;
		2676
		2677	warn "cancelling all extension coros";
		2678	$_->cancel for values %EXT_CORO;
		2679	%EXT_CORO = ();
		2680
		2681	warn "removing commands";
		2682	%COMMAND = ();
		2683
		2684	warn "removing ext commands";
		2685	%EXTCMD = ();
		2686
		2687	warn "unloading/nuking all extensions";
		2688	for my $pkg (@EXTS) {
		2689	warn "... unloading $pkg";
		2690
		2691	if (my $cb = $pkg->can ("unload")) {
		2692	eval {
		2693	$cb->($pkg);
		2694	1
		2695	} or warn "$pkg unloaded, but with errors: $@";
1161	}	2696	}
1162		2697
		2698	warn "... nuking $pkg";
		2699	Symbol::delete_package $pkg;
		2700	}
		2701
1163	# unload all modules loaded from $LIBDIR	2702	warn "unloading all perl modules loaded from $LIBDIR";
1164	while (my ($k, $v) = each %INC) {	2703	while (my ($k, $v) = each %INC) {
1165	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2704	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1166		2705
1167	$msg->("removing <$k>");	2706	warn "... unloading $k";
1168	delete $INC{$k};	2707	delete $INC{$k};
1169		2708
1170	$k =~ s/\.pm$//;	2709	$k =~ s/\.pm$//;
1171	$k =~ s/\//::/g;	2710	$k =~ s/\//::/g;
1172		2711
…		…
1175	}	2714	}
1176		2715
1177	Symbol::delete_package $k;	2716	Symbol::delete_package $k;
1178	}	2717	}
1179		2718
1180	# sync database to disk
1181	cf::db_sync;
1182
1183	# get rid of safe::, as good as possible	2719	warn "getting rid of safe::, as good as possible";
1184	Symbol::delete_package "safe::$_"	2720	Symbol::delete_package "safe::$_"
1185	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2721	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1186		2722
1187	# remove register_script_function callbacks
1188	# TODO
1189
1190	# unload cf.pm "a bit"	2723	warn "unloading cf.pm \"a bit\"";
1191	delete $INC{"cf.pm"};	2724	delete $INC{"cf.pm"};
		2725	delete $INC{"cf/pod.pm"};
1192		2726
1193	# don't, removes xs symbols, too,	2727	# don't, removes xs symbols, too,
1194	# and global variables created in xs	2728	# and global variables created in xs
1195	#Symbol::delete_package __PACKAGE__;	2729	#Symbol::delete_package __PACKAGE__;
1196		2730
1197	# reload cf.pm	2731	warn "unload completed, starting to reload now";
		2732
1198	$msg->("reloading cf.pm");	2733	warn "reloading cf.pm";
1199	require cf;	2734	require cf;
		2735	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1200		2736
1201	# load config and database again	2737	warn "loading config and database again";
1202	cf::cfg_load;	2738	cf::cfg_load;
1203	cf::db_load;
1204		2739
1205	# load extensions	2740	warn "loading extensions";
1206	$msg->("load extensions");
1207	cf::load_extensions;	2741	cf::load_extensions;
1208		2742
1209	# reattach attachments to objects	2743	warn "reattaching attachments to objects/players";
1210	$msg->("reattach");	2744	_global_reattach; # objects, sockets
1211	_global_reattach;	2745	warn "reattaching attachments to maps";
		2746	reattach $_ for values %MAP;
		2747	warn "reattaching attachments to players";
		2748	reattach $_ for values %PLAYER;
		2749
		2750	warn "leaving sync_job";
		2751
		2752	1
		2753	} or do {
		2754	warn $@;
		2755	warn "error while reloading, exiting.";
		2756	exit 1;
1212	};	2757	};
1213	$msg->($@) if $@;
1214		2758
1215	$msg->("reloaded");	2759	warn "reloaded";
1216	};	2760	};
1217		2761
1218	sub perl_reload() {	2762	our $RELOAD_WATCHER; # used only during reload
1219	_perl_reload {	2763
1220	warn $_[0];	2764	sub reload_perl() {
1221	print "$_[0]\n";	2765	# doing reload synchronously and two reloads happen back-to-back,
		2766	# coro crashes during coro_state_free->destroy here.
		2767
		2768	$RELOAD_WATCHER ||= Event->timer (
		2769	reentrant => 0,
		2770	after => 0,
		2771	data => WF_AUTOCANCEL,
		2772	cb => sub {
		2773	do_reload_perl;
		2774	undef $RELOAD_WATCHER;
		2775	},
1222	};	2776	);
1223	}	2777	}
1224		2778
1225	register "<global>", __PACKAGE__;
1226
1227	register_command "perl-reload" => sub {	2779	register_command "reload" => sub {
1228	my ($who, $arg) = @_;	2780	my ($who, $arg) = @_;
1229		2781
1230	if ($who->flag (FLAG_WIZ)) {	2782	if ($who->flag (FLAG_WIZ)) {
1231	_perl_reload {	2783	$who->message ("reloading server.");
1232	warn $_[0];	2784	async { reload_perl };
1233	$who->message ($_[0]);
1234	};
1235	}	2785	}
1236	};	2786	};
1237		2787
1238	unshift @INC, $LIBDIR;	2788	unshift @INC, $LIBDIR;
1239		2789
		2790	my $bug_warning = 0;
		2791
		2792	our @WAIT_FOR_TICK;
		2793	our @WAIT_FOR_TICK_BEGIN;
		2794
		2795	sub wait_for_tick {
		2796	return unless $TICK_WATCHER->is_active;
		2797	return if $Coro::current == $Coro::main;
		2798
		2799	my $signal = new Coro::Signal;
		2800	push @WAIT_FOR_TICK, $signal;
		2801	$signal->wait;
		2802	}
		2803
		2804	sub wait_for_tick_begin {
		2805	return unless $TICK_WATCHER->is_active;
		2806	return if $Coro::current == $Coro::main;
		2807
		2808	my $signal = new Coro::Signal;
		2809	push @WAIT_FOR_TICK_BEGIN, $signal;
		2810	$signal->wait;
		2811	}
		2812
1240	$TICK_WATCHER = Event->timer (	2813	$TICK_WATCHER = Event->timer (
		2814	reentrant => 0,
		2815	parked => 1,
1241	prio => 0,	2816	prio => 0,
1242	at => $NEXT_TICK || 1,	2817	at => $NEXT_TICK || $TICK,
1243	data => WF_AUTOCANCEL,	2818	data => WF_AUTOCANCEL,
1244	cb => sub {	2819	cb => sub {
		2820	if ($Coro::current != $Coro::main) {
		2821	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2822	unless ++$bug_warning > 10;
		2823	return;
		2824	}
		2825
		2826	$NOW = Event::time;
		2827
1245	cf::server_tick; # one server iteration	2828	cf::server_tick; # one server iteration
1246		2829
1247	my $NOW = Event::time;	2830	$RUNTIME += $TICK;
1248	$NEXT_TICK += $TICK;	2831	$NEXT_TICK += $TICK;
1249		2832
		2833	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2834	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2835	Coro::async_pool {
		2836	write_runtime
		2837	or warn "ERROR: unable to write runtime file: $!";
		2838	};
		2839	}
		2840
		2841	# my $AFTER = Event::time;
		2842	# warn $AFTER - $NOW;#d#
		2843
1250	# if we are delayed by four ticks or more, skip them all	2844	# if we are delayed by four ticks or more, skip them all
1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2845	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1252		2846
1253	$TICK_WATCHER->at ($NEXT_TICK);	2847	$TICK_WATCHER->at ($NEXT_TICK);
1254	$TICK_WATCHER->start;	2848	$TICK_WATCHER->start;
		2849
		2850	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2851	$sig->send;
		2852	}
		2853	while (my $sig = shift @WAIT_FOR_TICK) {
		2854	$sig->send;
		2855	}
		2856
		2857	_post_tick;
1255	},	2858	},
1256	);	2859	);
1257		2860
		2861	{
		2862	BDB::max_poll_time $TICK * 0.1;
		2863	$BDB_POLL_WATCHER = Event->io (
		2864	reentrant => 0,
		2865	fd => BDB::poll_fileno,
		2866	poll => 'r',
		2867	prio => 0,
		2868	data => WF_AUTOCANCEL,
		2869	cb => \&BDB::poll_cb,
		2870	);
		2871	BDB::min_parallel 8;
		2872
		2873	BDB::set_sync_prepare {
		2874	my $status;
		2875	my $current = $Coro::current;
		2876	(
		2877	sub {
		2878	$status = $!;
		2879	$current->ready; undef $current;
		2880	},
		2881	sub {
		2882	Coro::schedule while defined $current;
		2883	$! = $status;
		2884	},
		2885	)
		2886	};
		2887
		2888	unless ($DB_ENV) {
		2889	$DB_ENV = BDB::db_env_create;
		2890
		2891	cf::sync_job {
		2892	eval {
		2893	BDB::db_env_open
		2894	$DB_ENV,
		2895	$BDBDIR,
		2896	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2897	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2898	0666;
		2899
		2900	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2901
		2902	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2903	$DB_ENV->set_lk_detect;
		2904	};
		2905
		2906	cf::cleanup "db_env_open(db): $@" if $@;
		2907	};
		2908	}
		2909	}
		2910
		2911	{
		2912	IO::AIO::min_parallel 8;
		2913
		2914	undef $Coro::AIO::WATCHER;
1258	IO::AIO::max_poll_time $TICK * 0.2;	2915	IO::AIO::max_poll_time $TICK * 0.1;
1259		2916	$AIO_POLL_WATCHER = Event->io (
1260	Event->io (fd => IO::AIO::poll_fileno,	2917	reentrant => 0,
1261	poll => 'r',
1262	prio => 5,
1263	data => WF_AUTOCANCEL,	2918	data => WF_AUTOCANCEL,
		2919	fd => IO::AIO::poll_fileno,
		2920	poll => 'r',
		2921	prio => 6,
1264	cb => \&IO::AIO::poll_cb);	2922	cb => \&IO::AIO::poll_cb,
		2923	);
		2924	}
		2925
		2926	# load additional modules
		2927	use cf::pod;
		2928
		2929	END { cf::emergency_save }
1265		2930
1266	1	2931	1
1267		2932

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