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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 1.224 by root, Mon Mar 12 21:42:12 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
		14	use Coro 3.52 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21
		22	use BDB ();
		23	use Data::Dumper;
		24	use Digest::MD5;
		25	use Fcntl;
10	use IO::AIO ();	26	use IO::AIO 2.32 ();
11	use YAML::Syck ();	27	use YAML::Syck ();
12	use Time::HiRes;	28	use Time::HiRes;
13	use Event;	29	use Compress::LZF;
		30
		31	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		32	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
14	$Event::Eval = 1; # no idea why this is required, but it is	33	$Event::Eval = 1; # no idea why this is required, but it is
		34
		35	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		36
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	37	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	38	$YAML::Syck::ImplicitUnicode = 1;
18		39
19	use strict;	40	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		41
23	our %COMMAND = ();	42	our %COMMAND = ();
24	our %COMMAND_TIME = ();	43	our %COMMAND_TIME = ();
		44
		45	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	46	our %EXTCMD = ();
		47	our %EXT_CORO = (); # coroutines bound to extensions
		48	our %EXT_MAP = (); # pluggable maps
26		49
27	_init_vars;	50	our $RELOAD; # number of reloads so far
28
29	our @EVENT;	51	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	52	our $LIBDIR = datadir . "/ext";
31		53
32	our $TICK = MAX_TIME * 1e-6;	54	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	55	our $TICK_WATCHER;
		56	our $AIO_POLL_WATCHER;
		57	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
34	our $NEXT_TICK;	58	our $NEXT_TICK;
		59	our $NOW;
		60	our $USE_FSYNC = 1; # use fsync to write maps - default off
		61
		62	our $BDB_POLL_WATCHER;
		63	our $DB_ENV;
35		64
36	our %CFG;	65	our %CFG;
37		66
38	our $UPTIME; $UPTIME ||= time;	67	our $UPTIME; $UPTIME ||= time;
		68	our $RUNTIME;
		69
		70	our %PLAYER; # all users
		71	our %MAP; # all maps
		72	our $LINK_MAP; # the special {link} map, which is always available
		73	our $RANDOM_MAPS = cf::localdir . "/random";
		74	our $BDB_ENV_DIR = cf::localdir . "/db";
		75
		76	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		77	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		78
		79	# used to convert map paths into valid unix filenames by replacing / by ∕
		80	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		81
		82	binmode STDOUT;
		83	binmode STDERR;
		84
		85	# read virtual server time, if available
		86	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		87	open my $fh, "<", cf::localdir . "/runtime"
		88	or die "unable to read runtime file: $!";
		89	$RUNTIME = <$fh> + 0.;
		90	}
		91
		92	mkdir cf::localdir;
		93	mkdir cf::localdir . "/" . cf::playerdir;
		94	mkdir cf::localdir . "/" . cf::tmpdir;
		95	mkdir cf::localdir . "/" . cf::uniquedir;
		96	mkdir $RANDOM_MAPS;
		97	mkdir $BDB_ENV_DIR;
		98
		99	our $EMERGENCY_POSITION;
		100
		101	sub cf::map::normalise;
39		102
40	#############################################################################	103	#############################################################################
41		104
42	=head2 GLOBAL VARIABLES	105	=head2 GLOBAL VARIABLES
43		106
44	=over 4	107	=over 4
45		108
46	=item $cf::UPTIME	109	=item $cf::UPTIME
47		110
48	The timestamp of the server start (so not actually an uptime).	111	The timestamp of the server start (so not actually an uptime).
		112
		113	=item $cf::RUNTIME
		114
		115	The time this server has run, starts at 0 and is increased by $cf::TICK on
		116	every server tick.
49		117
50	=item $cf::LIBDIR	118	=item $cf::LIBDIR
51		119
52	The perl library directory, where extensions and cf-specific modules can	120	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	121	be found. It will be added to C<@INC> automatically.
54		122
		123	=item $cf::NOW
		124
		125	The time of the last (current) server tick.
		126
55	=item $cf::TICK	127	=item $cf::TICK
56		128
57	The interval between server ticks, in seconds.	129	The interval between server ticks, in seconds.
58		130
59	=item %cf::CFG	131	=item %cf::CFG
60		132
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	133	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	134	from wherever your confdir points to.
		135
		136	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		137
		138	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		139	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		140	processing has been done. Call C<< ->wait >> on them to maximise the
		141	window of cpu time available, or simply to synchronise to the server tick.
63		142
64	=back	143	=back
65		144
66	=cut	145	=cut
67		146
68	BEGIN {	147	BEGIN {
69	*CORE::GLOBAL::warn = sub {	148	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	149	my $msg = join "", @_;
		150	utf8::encode $msg;
		151
71	$msg .= "\n"	152	$msg .= "\n"
72	unless $msg =~ /\n$/;	153	unless $msg =~ /\n$/;
73		154
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	155	LOG llevError, $msg;
76	};	156	};
77	}	157	}
78		158
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	159	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	160	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	164	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		165
86	# we bless all objects into (empty) derived classes to force a method lookup	166	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	167	# within the Safe compartment.
88	for my $pkg (qw(	168	for my $pkg (qw(
89	cf::global	169	cf::global cf::attachable
90	cf::object cf::object::player	170	cf::object cf::object::player
91	cf::client cf::player	171	cf::client cf::player
92	cf::arch cf::living	172	cf::arch cf::living
93	cf::map cf::party cf::region	173	cf::map cf::party cf::region
94	)) {	174	)) {
…		…
98		178
99	$Event::DIED = sub {	179	$Event::DIED = sub {
100	warn "error in event callback: @_";	180	warn "error in event callback: @_";
101	};	181	};
102		182
103	my %ext_pkg;
104	my @exts;
105	my @hook;
106
107	=head2 UTILITY FUNCTIONS	183	=head2 UTILITY FUNCTIONS
108		184
109	=over 4	185	=over 4
110		186
		187	=item dumpval $ref
		188
111	=cut	189	=cut
		190
		191	sub dumpval {
		192	eval {
		193	local $SIG{__DIE__};
		194	my $d;
		195	if (1) {
		196	$d = new Data::Dumper([$_[0]], ["*var"]);
		197	$d->Terse(1);
		198	$d->Indent(2);
		199	$d->Quotekeys(0);
		200	$d->Useqq(1);
		201	#$d->Bless(...);
		202	$d->Seen($_[1]) if @_ > 1;
		203	$d = $d->Dump();
		204	}
		205	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		206	$d
		207	} || "[unable to dump $_[0]: '$@']";
		208	}
112		209
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	210	use JSON::Syck (); # TODO# replace by JSON::PC once working
114		211
115	=item $ref = cf::from_json $json	212	=item $ref = cf::from_json $json
116		213
…		…
130	=cut	227	=cut
131		228
132	sub to_json($) {	229	sub to_json($) {
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	230	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
134	JSON::Syck::Dump $_[0]	231	JSON::Syck::Dump $_[0]
		232	}
		233
		234	=item cf::lock_wait $string
		235
		236	Wait until the given lock is available. See cf::lock_acquire.
		237
		238	=item my $lock = cf::lock_acquire $string
		239
		240	Wait until the given lock is available and then acquires it and returns
		241	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		242	for example when the coroutine gets canceled), the lock is automatically
		243	returned.
		244
		245	Lock names should begin with a unique identifier (for example, cf::map::find
		246	uses map_find and cf::map::load uses map_load).
		247
		248	=cut
		249
		250	our %LOCK;
		251
		252	sub lock_wait($) {
		253	my ($key) = @_;
		254
		255	# wait for lock, if any
		256	while ($LOCK{$key}) {
		257	push @{ $LOCK{$key} }, $Coro::current;
		258	Coro::schedule;
		259	}
		260	}
		261
		262	sub lock_acquire($) {
		263	my ($key) = @_;
		264
		265	# wait, to be sure we are not locked
		266	lock_wait $key;
		267
		268	$LOCK{$key} = [];
		269
		270	Coro::guard {
		271	# wake up all waiters, to be on the safe side
		272	$_->ready for @{ delete $LOCK{$key} };
		273	}
		274	}
		275
		276	sub freeze_mainloop {
		277	return unless $TICK_WATCHER->is_active;
		278
		279	my $guard = Coro::guard {
		280	$TICK_WATCHER->start;
		281	};
		282	$TICK_WATCHER->stop;
		283	$guard
		284	}
		285
		286	=item cf::async { BLOCK }
		287
		288	Currently the same as Coro::async_pool, meaning you cannot use
		289	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		290	thing you are allowed to do is call C<prio> on it.
		291
		292	=cut
		293
		294	BEGIN { *async = \&Coro::async_pool }
		295
		296	=item cf::sync_job { BLOCK }
		297
		298	The design of crossfire+ requires that the main coro ($Coro::main) is
		299	always able to handle events or runnable, as crossfire+ is only partly
		300	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		301
		302	If it must be done, put the blocking parts into C<sync_job>. This will run
		303	the given BLOCK in another coroutine while waiting for the result. The
		304	server will be frozen during this time, so the block should either finish
		305	fast or be very important.
		306
		307	=cut
		308
		309	sub sync_job(&) {
		310	my ($job) = @_;
		311
		312	if ($Coro::current == $Coro::main) {
		313	# this is the main coro, too bad, we have to block
		314	# till the operation succeeds, freezing the server :/
		315
		316	# TODO: use suspend/resume instead
		317	# (but this is cancel-safe)
		318	my $freeze_guard = freeze_mainloop;
		319
		320	my $busy = 1;
		321	my @res;
		322
		323	(async {
		324	@res = eval { $job->() };
		325	warn $@ if $@;
		326	undef $busy;
		327	})->prio (Coro::PRIO_MAX);
		328
		329	while ($busy) {
		330	Coro::cede or Event::one_event;
		331	}
		332
		333	wantarray ? @res : $res[0]
		334	} else {
		335	# we are in another coroutine, how wonderful, everything just works
		336
		337	$job->()
		338	}
		339	}
		340
		341	=item $coro = cf::async_ext { BLOCK }
		342
		343	Like async, but this coro is automatically being canceled when the
		344	extension calling this is being unloaded.
		345
		346	=cut
		347
		348	sub async_ext(&) {
		349	my $cb = shift;
		350
		351	my $coro = &Coro::async ($cb);
		352
		353	$coro->on_destroy (sub {
		354	delete $EXT_CORO{$coro+0};
		355	});
		356	$EXT_CORO{$coro+0} = $coro;
		357
		358	$coro
		359	}
		360
		361	sub write_runtime {
		362	my $guard = cf::lock_acquire "write_runtime";
		363
		364	my $runtime = cf::localdir . "/runtime";
		365
		366	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		367	or return;
		368
		369	my $value = $cf::RUNTIME + 90 + 10;
		370	# 10 is the runtime save interval, for a monotonic clock
		371	# 60 allows for the watchdog to kill the server.
		372
		373	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		374	and return;
		375
		376	# always fsync - this file is important
		377	aio_fsync $fh
		378	and return;
		379
		380	close $fh
		381	or return;
		382
		383	aio_rename "$runtime~", $runtime
		384	and return;
		385
		386	1
135	}	387	}
136		388
137	=back	389	=back
138		390
139	=cut	391	=cut
…		…
249	my ($self, $victim) = @_;	501	my ($self, $victim) = @_;
250	...	502	...
251	}	503	}
252	}	504	}
253		505
		506	=item $attachable->valid
		507
		508	Just because you have a perl object does not mean that the corresponding
		509	C-level object still exists. If you try to access an object that has no
		510	valid C counterpart anymore you get an exception at runtime. This method
		511	can be used to test for existence of the C object part without causing an
		512	exception.
		513
254	=cut	514	=cut
255		515
256	# the following variables are defined in .xs and must not be re-created	516	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	517	our @CB_GLOBAL = (); # registry for all global events
		518	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	519	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	520	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	521	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	522	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	523	our @CB_MAP = ();
263		524
264	my %attachment;	525	my %attachment;
		526
		527	sub cf::attachable::thawer_merge {
		528	# simply override everything except _meta
		529	local $_[0]{_meta};
		530	%{$_[0]} = %{$_[1]};
		531	}
265		532
266	sub _attach_cb($$$$) {	533	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	534	my ($registry, $event, $prio, $cb) = @_;
268		535
269	use sort 'stable';	536	use sort 'stable';
…		…
272		539
273	@{$registry->[$event]} = sort	540	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	541	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	542	@{$registry->[$event] || []}, $cb;
276	}	543	}
		544
		545	# hack
		546	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		547
278	# attach handles attaching event callbacks	548	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	549	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	550	# registry (== where the callback attaches to).
281	sub _attach {	551	sub _attach {
…		…
283		553
284	my $object_type;	554	my $object_type;
285	my $prio = 0;	555	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	556	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		557
		558	#TODO: get rid of this hack
		559	if ($attachable_klass{$klass}) {
		560	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		561	}
		562
288	while (@arg) {	563	while (@arg) {
289	my $type = shift @arg;	564	my $type = shift @arg;
290		565
291	if ($type eq "prio") {	566	if ($type eq "prio") {
292	$prio = shift @arg;	567	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	642	my ($obj, $name) = @_;
368		643
369	exists $obj->{_attachment}{$name}	644	exists $obj->{_attachment}{$name}
370	}	645	}
371		646
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	647	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	648	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	649	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	650	(\\\@CB_$klass, KLASS_$klass)
376	}	651	}
377		652
…		…
413	}	688	}
414		689
415	0	690	0
416	}	691	}
417		692
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	693	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		694
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, ...)	695	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		696
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	697	Generate an object-specific event with the given arguments.
429		698
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	699	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	700	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	701	results (if you must, access C<@cf::invoke_results> directly).
433		702
434	=back	703	=back
435		704
436	=cut	705	=cut
437		706
438	#############################################################################	707	#############################################################################
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	708	# object support
460		709
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 {	710	sub reattach {
		711	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	712	my ($obj) = @_;
		713
		714	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		715
476	my $registry = $obj->registry;	716	my $registry = $obj->registry;
477		717
478	@$registry = ();	718	@$registry = ();
479		719
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	720	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	729	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	730	}
491	}	731	}
492	}	732	}
493		733
494	sub object_freezer_save {	734	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	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	735	prio => -1000000,
		736	on_instantiate => sub {
		737	my ($obj, $data) = @_;
		738
		739	$data = from_json $data;
		740
		741	for (@$data) {
		742	my ($name, $args) = @$_;
		743
		744	$obj->attach ($name, %{$args || {} });
		745	}
		746	},
		747	on_reattach => \&reattach,
554	on_clone => sub {	748	on_clone => sub {
555	my ($src, $dst) = @_;	749	my ($src, $dst) = @_;
556		750
557	@{$dst->registry} = @{$src->registry};	751	@{$dst->registry} = @{$src->registry};
558		752
…		…
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	755	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	756	if exists $src->{_attachment};
563	},	757	},
564	);	758	);
565		759
		760	sub object_freezer_save {
		761	my ($filename, $rdata, $objs) = @_;
		762
		763	sync_job {
		764	if (length $$rdata) {
		765	warn sprintf "saving %s (%d,%d)\n",
		766	$filename, length $$rdata, scalar @$objs;
		767
		768	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		769	chmod SAVE_MODE, $fh;
		770	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		771	aio_fsync $fh if $cf::USE_FSYNC;
		772	close $fh;
		773
		774	if (@$objs) {
		775	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		776	chmod SAVE_MODE, $fh;
		777	my $data = Storable::nfreeze { version => 1, objs => $objs };
		778	aio_write $fh, 0, (length $data), $data, 0;
		779	aio_fsync $fh if $cf::USE_FSYNC;
		780	close $fh;
		781	aio_rename "$filename.pst~", "$filename.pst";
		782	}
		783	} else {
		784	aio_unlink "$filename.pst";
		785	}
		786
		787	aio_rename "$filename~", $filename;
		788	} else {
		789	warn "FATAL: $filename~: $!\n";
		790	}
		791	} else {
		792	aio_unlink $filename;
		793	aio_unlink "$filename.pst";
		794	}
		795	}
		796	}
		797
		798	sub object_freezer_as_string {
		799	my ($rdata, $objs) = @_;
		800
		801	use Data::Dumper;
		802
		803	$$rdata . Dumper $objs
		804	}
		805
		806	sub object_thawer_load {
		807	my ($filename) = @_;
		808
		809	my ($data, $av);
		810
		811	(aio_load $filename, $data) >= 0
		812	or return;
		813
		814	unless (aio_stat "$filename.pst") {
		815	(aio_load "$filename.pst", $av) >= 0
		816	or return;
		817	$av = eval { (Storable::thaw $av)->{objs} };
		818	}
		819
		820	warn sprintf "loading %s (%d)\n",
		821	$filename, length $data, scalar @{$av || []};#d#
		822	return ($data, $av);
		823	}
		824
566	#############################################################################	825	#############################################################################
567	# command handling &c	826	# command handling &c
568		827
569	=item cf::register_command $name => \&callback($ob,$args);	828	=item cf::register_command $name => \&callback($ob,$args);
570		829
…		…
592	=cut	851	=cut
593		852
594	sub register_extcmd {	853	sub register_extcmd {
595	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
596		855
597	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";
599
600	$EXTCMD{$name} = [$cb, $caller];	856	$EXTCMD{$name} = $cb;
601	}	857	}
602		858
603	cf::player->attach (	859	cf::player->attach (
604	on_command => sub {	860	on_command => sub {
605	my ($pl, $name, $params) = @_;	861	my ($pl, $name, $params) = @_;
…		…
618		874
619	my $msg = eval { from_json $buf };	875	my $msg = eval { from_json $buf };
620		876
621	if (ref $msg) {	877	if (ref $msg) {
622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	878	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
623	if (my %reply = $cb->[0]->($pl, $msg)) {	879	if (my %reply = $cb->($pl, $msg)) {
624	$pl->ext_reply ($msg->{msgid}, %reply);	880	$pl->ext_reply ($msg->{msgid}, %reply);
625	}	881	}
626	}	882	}
627	} else {	883	} else {
628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	884	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
630		886
631	cf::override;	887	cf::override;
632	},	888	},
633	);	889	);
634		890
635	sub register {
636	my ($base, $pkg) = @_;
637
638	#TODO
639	}
640
641	sub load_extension {	891	sub load_extension {
642	my ($path) = @_;	892	my ($path) = @_;
643		893
644	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	894	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
645	my $base = $1;	895	my $base = $1;
646	my $pkg = $1;	896	my $pkg = $1;
647	$pkg =~ s/[^[:word:]]/_/g;	897	$pkg =~ s/[^[:word:]]/_/g;
648	$pkg = "ext::$pkg";	898	$pkg = "ext::$pkg";
649		899
650	warn "loading '$path' into '$pkg'\n";	900	warn "... loading '$path' into '$pkg'\n";
651		901
652	open my $fh, "<:utf8", $path	902	open my $fh, "<:utf8", $path
653	or die "$path: $!";	903	or die "$path: $!";
654		904
655	my $source =	905	my $source =
656	"package $pkg; use strict; use utf8;\n"	906	"package $pkg; use strict; use utf8;\n"
657	. "#line 1 \"$path\"\n{\n"	907	. "#line 1 \"$path\"\n{\n"
658	. (do { local $/; <$fh> })	908	. (do { local $/; <$fh> })
659	. "\n};\n1";	909	. "\n};\n1";
660		910
661	eval $source	911	unless (eval $source) {
662	or die $@ ? "$path: $@\n"	912	my $msg = $@ ? "$path: $@\n"
663	: "extension disabled.\n";	913	: "extension disabled.\n";
664		914	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
665	push @exts, $pkg;	915	warn $@;
666	$ext_pkg{$base} = $pkg;	916	warn "mandatory extension failed to load, exiting.\n";
667		917	exit 1;
668	# no strict 'refs';	918	}
669	# @{"$pkg\::ISA"} = ext::;	919	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	# }	920	}
684		921
685	# remove commands	922	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	}	923	}
710		924
711	sub load_extensions {	925	sub load_extensions {
712	for my $ext (<$LIBDIR/*.ext>) {	926	for my $ext (<$LIBDIR/*.ext>) {
713	next unless -r $ext;	927	next unless -r $ext;
…		…
717	} or warn "$ext not loaded: $@";	931	} or warn "$ext not loaded: $@";
718	}	932	}
719	}	933	}
720		934
721	#############################################################################	935	#############################################################################
722	# load/save/clean perl data associated with a map
723		936
724	*cf::mapsupport::on_clean = sub {	937	=head2 CORE EXTENSIONS
		938
		939	Functions and methods that extend core crossfire objects.
		940
		941	=cut
		942
		943	package cf::player;
		944
		945	use Coro::AIO;
		946
		947	=head3 cf::player
		948
		949	=over 4
		950
		951	=item cf::player::find $login
		952
		953	Returns the given player object, loading it if necessary (might block).
		954
		955	=cut
		956
		957	sub playerdir($) {
		958	cf::localdir
		959	. "/"
		960	. cf::playerdir
		961	. "/"
		962	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		963	}
		964
		965	sub path($) {
		966	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		967
		968	(playerdir $login) . "/$login.pl"
		969	}
		970
		971	sub find_active($) {
		972	$cf::PLAYER{$_[0]}
		973	and $cf::PLAYER{$_[0]}->active
		974	and $cf::PLAYER{$_[0]}
		975	}
		976
		977	sub exists($) {
		978	my ($login) = @_;
		979
		980	$cf::PLAYER{$login}
		981	or cf::sync_job { !aio_stat path $login }
		982	}
		983
		984	sub find($) {
		985	return $cf::PLAYER{$_[0]} || do {
		986	my $login = $_[0];
		987
		988	my $guard = cf::lock_acquire "user_find:$login";
		989
		990	$cf::PLAYER{$_[0]} || do {
		991	my $pl = load_pl path $login
		992	or return;
		993	$cf::PLAYER{$login} = $pl
		994	}
		995	}
		996	}
		997
		998	sub save($) {
		999	my ($pl) = @_;
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	my $path = path $pl;
		1004	my $guard = cf::lock_acquire "user_save:$path";
		1005
		1006	return if $pl->{deny_save};
		1007
		1008	aio_mkdir playerdir $pl, 0770;
		1009	$pl->{last_save} = $cf::RUNTIME;
		1010
		1011	$pl->save_pl ($path);
		1012	Coro::cede;
		1013	}
		1014
		1015	sub new($) {
		1016	my ($login) = @_;
		1017
		1018	my $self = create;
		1019
		1020	$self->ob->name ($login);
		1021	$self->{deny_save} = 1;
		1022
		1023	$cf::PLAYER{$login} = $self;
		1024
		1025	$self
		1026	}
		1027
		1028	=item $pl->quit_character
		1029
		1030	Nukes the player without looking back. If logged in, the connection will
		1031	be destroyed. May block for a long time.
		1032
		1033	=cut
		1034
		1035	sub quit_character {
		1036	my ($pl) = @_;
		1037
		1038	my $name = $pl->ob->name;
		1039
		1040	$pl->{deny_save} = 1;
		1041	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1042
		1043	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1044	$pl->deactivate;
		1045	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1046	$pl->ns->destroy if $pl->ns;
		1047
		1048	my $path = playerdir $pl;
		1049	my $temp = "$path~$cf::RUNTIME~deleting~";
		1050	aio_rename $path, $temp;
		1051	delete $cf::PLAYER{$pl->ob->name};
		1052	$pl->destroy;
		1053
		1054	my $prefix = qr<^~\Q$name\E/>;
		1055
		1056	# nuke player maps
		1057	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1058
		1059	IO::AIO::aio_rmtree $temp;
		1060	}
		1061
		1062	=item $pl->kick
		1063
		1064	Kicks a player out of the game. This destroys the connection.
		1065
		1066	=cut
		1067
		1068	sub kick {
		1069	my ($pl, $kicker) = @_;
		1070
		1071	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1072	$pl->killer ("kicked");
		1073	$pl->ns->destroy;
		1074	}
		1075
		1076	=item cf::player::list_logins
		1077
		1078	Returns am arrayref of all valid playernames in the system, can take a
		1079	while and may block, so not sync_job-capable, ever.
		1080
		1081	=cut
		1082
		1083	sub list_logins {
		1084	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1085	or return [];
		1086
		1087	my @logins;
		1088
		1089	for my $login (@$dirs) {
		1090	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1091	aio_read $fh, 0, 512, my $buf, 0 or next;
		1092	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1093
		1094	utf8::decode $login;
		1095	push @logins, $login;
		1096	}
		1097
		1098	\@logins
		1099	}
		1100
		1101	=item $player->maps
		1102
		1103	Returns an arrayref of map paths that are private for this
		1104	player. May block.
		1105
		1106	=cut
		1107
		1108	sub maps($) {
		1109	my ($pl) = @_;
		1110
		1111	$pl = ref $pl ? $pl->ob->name : $pl;
		1112
		1113	my $files = aio_readdir playerdir $pl
		1114	or return;
		1115
		1116	my @paths;
		1117
		1118	for (@$files) {
		1119	utf8::decode $_;
		1120	next if /\.(?:pl|pst)$/;
		1121	next unless /^$PATH_SEP/o;
		1122
		1123	push @paths, cf::map::normalise "~$pl/$_";
		1124	}
		1125
		1126	\@paths
		1127	}
		1128
		1129	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1130
		1131	Sends an ext reply to the player.
		1132
		1133	=cut
		1134
		1135	sub ext_reply($$$%) {
		1136	my ($self, $id, %msg) = @_;
		1137
		1138	$msg{msgid} = $id;
		1139
		1140	$self->send ("ext " . cf::to_json \%msg);
		1141	}
		1142
		1143	package cf;
		1144
		1145	=back
		1146
		1147
		1148	=head3 cf::map
		1149
		1150	=over 4
		1151
		1152	=cut
		1153
		1154	package cf::map;
		1155
		1156	use Fcntl;
		1157	use Coro::AIO;
		1158
		1159	use overload
		1160	'""' => \&as_string,
		1161	fallback => 1;
		1162
		1163	our $MAX_RESET = 3600;
		1164	our $DEFAULT_RESET = 3000;
		1165
		1166	sub generate_random_map {
		1167	my ($self, $rmp) = @_;
		1168	# mit "rum" bekleckern, nicht
		1169	$self->_create_random_map (
		1170	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1171	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1172	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1173	$rmp->{exit_on_final_map},
		1174	$rmp->{xsize}, $rmp->{ysize},
		1175	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1176	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1177	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1178	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1179	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1180	(cf::region::find $rmp->{region}), $rmp->{custom}
		1181	)
		1182	}
		1183
		1184	=item cf::map->register ($regex, $prio)
		1185
		1186	Register a handler for the map path matching the given regex at the
		1187	givne priority (higher is better, built-in handlers have priority 0, the
		1188	default).
		1189
		1190	=cut
		1191
		1192	sub register {
		1193	my (undef, $regex, $prio) = @_;
		1194	my $pkg = caller;
		1195
		1196	no strict;
		1197	push @{"$pkg\::ISA"}, __PACKAGE__;
		1198
		1199	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1200	}
		1201
		1202	# also paths starting with '/'
		1203	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1204
		1205	sub thawer_merge {
		1206	my ($self, $merge) = @_;
		1207
		1208	# we have to keep some variables in memory intact
		1209	local $self->{path};
		1210	local $self->{load_path};
		1211	local $self->{deny_save};
		1212	local $self->{deny_reset};
		1213
		1214	$self->SUPER::thawer_merge ($merge);
		1215	}
		1216
		1217	sub normalise {
		1218	my ($path, $base) = @_;
		1219
		1220	$path = "$path"; # make sure its a string
		1221
		1222	$path =~ s/\.map$//;
		1223
		1224	# map plan:
		1225	#
		1226	# /! non-realised random map exit (special hack!)
		1227	# {... are special paths that are not being touched
		1228	# ?xxx/... are special absolute paths
		1229	# ?random/... random maps
		1230	# /... normal maps
		1231	# ~user/... per-player map of a specific user
		1232
		1233	$path =~ s/$PATH_SEP/\//go;
		1234
		1235	# treat it as relative path if it starts with
		1236	# something that looks reasonable
		1237	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1238	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1239
		1240	$base =~ s{[^/]+/?$}{};
		1241	$path = "$base/$path";
		1242	}
		1243
		1244	for ($path) {
		1245	redo if s{//}{/};
		1246	redo if s{/\.?/}{/};
		1247	redo if s{/[^/]+/\.\./}{/};
		1248	}
		1249
		1250	$path
		1251	}
		1252
		1253	sub new_from_path {
		1254	my (undef, $path, $base) = @_;
		1255
		1256	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1257
		1258	$path = normalise $path, $base;
		1259
		1260	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1261	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1262	my $self = bless cf::map::new, $pkg;
		1263	$self->{path} = $path; $self->path ($path);
		1264	$self->init; # pass $1 etc.
		1265	return $self;
		1266	}
		1267	}
		1268
		1269	Carp::carp "unable to resolve path '$path' (base '$base').";
		1270	()
		1271	}
		1272
		1273	sub init {
		1274	my ($self) = @_;
		1275
		1276	$self
		1277	}
		1278
		1279	sub as_string {
		1280	my ($self) = @_;
		1281
		1282	"$self->{path}"
		1283	}
		1284
		1285	# the displayed name, this is a one way mapping
		1286	sub visible_name {
		1287	&as_string
		1288	}
		1289
		1290	# the original (read-only) location
		1291	sub load_path {
		1292	my ($self) = @_;
		1293
		1294	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1295	}
		1296
		1297	# the temporary/swap location
		1298	sub save_path {
		1299	my ($self) = @_;
		1300
		1301	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1302	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1303	}
		1304
		1305	# the unique path, undef == no special unique path
		1306	sub uniq_path {
		1307	my ($self) = @_;
		1308
		1309	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1310	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1311	}
		1312
		1313	# and all this just because we cannot iterate over
		1314	# all maps in C++...
		1315	sub change_all_map_light {
		1316	my ($change) = @_;
		1317
		1318	$_->change_map_light ($change)
		1319	for grep $_->outdoor, values %cf::MAP;
		1320	}
		1321
		1322	sub unlink_save {
		1323	my ($self) = @_;
		1324
		1325	utf8::encode (my $save = $self->save_path);
		1326	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1327	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1328	}
		1329
		1330	sub load_header_from($) {
		1331	my ($self, $path) = @_;
		1332
		1333	utf8::encode $path;
		1334	#aio_open $path, O_RDONLY, 0
		1335	# or return;
		1336
		1337	$self->_load_header ($path)
		1338	or return;
		1339
		1340	$self->{load_path} = $path;
		1341
		1342	1
		1343	}
		1344
		1345	sub load_header_orig {
		1346	my ($self) = @_;
		1347
		1348	$self->load_header_from ($self->load_path)
		1349	}
		1350
		1351	sub load_header_temp {
		1352	my ($self) = @_;
		1353
		1354	$self->load_header_from ($self->save_path)
		1355	}
		1356
		1357	sub prepare_temp {
		1358	my ($self) = @_;
		1359
		1360	$self->last_access ((delete $self->{last_access})
		1361	|| $cf::RUNTIME); #d#
		1362	# safety
		1363	$self->{instantiate_time} = $cf::RUNTIME
		1364	if $self->{instantiate_time} > $cf::RUNTIME;
		1365	}
		1366
		1367	sub prepare_orig {
		1368	my ($self) = @_;
		1369
		1370	$self->{load_original} = 1;
		1371	$self->{instantiate_time} = $cf::RUNTIME;
		1372	$self->last_access ($cf::RUNTIME);
		1373	$self->instantiate;
		1374	}
		1375
		1376	sub load_header {
		1377	my ($self) = @_;
		1378
		1379	if ($self->load_header_temp) {
		1380	$self->prepare_temp;
		1381	} else {
		1382	$self->load_header_orig
		1383	or return;
		1384	$self->prepare_orig;
		1385	}
		1386
		1387	1
		1388	}
		1389
		1390	sub find;
		1391	sub find {
		1392	my ($path, $origin) = @_;
		1393
		1394	$path = normalise $path, $origin && $origin->path;
		1395
		1396	cf::lock_wait "map_find:$path";
		1397
		1398	$cf::MAP{$path} || do {
		1399	my $guard = cf::lock_acquire "map_find:$path";
		1400	my $map = new_from_path cf::map $path
		1401	or return;
		1402
		1403	$map->{last_save} = $cf::RUNTIME;
		1404
		1405	$map->load_header
		1406	or return;
		1407
		1408	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1409	# doing this can freeze the server in a sync job, obviously
		1410	#$cf::WAIT_FOR_TICK->wait;
		1411	$map->reset;
		1412	undef $guard;
		1413	return find $path;
		1414	}
		1415
		1416	$cf::MAP{$path} = $map
		1417	}
		1418	}
		1419
		1420	sub pre_load { }
		1421	sub post_load { }
		1422
		1423	sub load {
		1424	my ($self) = @_;
		1425
		1426	local $self->{deny_reset} = 1; # loading can take a long time
		1427
		1428	my $path = $self->{path};
		1429	my $guard = cf::lock_acquire "map_load:$path";
		1430
		1431	return if $self->in_memory != cf::MAP_SWAPPED;
		1432
		1433	$self->in_memory (cf::MAP_LOADING);
		1434
		1435	$self->alloc;
		1436
		1437	$self->pre_load;
		1438
		1439	$self->_load_objects ($self->{load_path}, 1)
		1440	or return;
		1441
		1442	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1443	if delete $self->{load_original};
		1444
		1445	if (my $uniq = $self->uniq_path) {
		1446	utf8::encode $uniq;
		1447	if (aio_open $uniq, O_RDONLY, 0) {
		1448	$self->clear_unique_items;
		1449	$self->_load_objects ($uniq, 0);
		1450	}
		1451	}
		1452
		1453	Coro::cede;
		1454
		1455	# now do the right thing for maps
		1456	$self->link_multipart_objects;
		1457
		1458	unless ($self->{deny_activate}) {
		1459	$self->decay_objects;
		1460	$self->fix_auto_apply;
		1461	$self->update_buttons;
		1462	Coro::cede;
		1463	$self->set_darkness_map;
		1464	$self->difficulty ($self->estimate_difficulty)
		1465	unless $self->difficulty;
		1466	Coro::cede;
		1467	$self->activate;
		1468	}
		1469
		1470	$self->post_load;
		1471
		1472	$self->in_memory (cf::MAP_IN_MEMORY);
		1473	}
		1474
		1475	sub customise_for {
		1476	my ($self, $ob) = @_;
		1477
		1478	return find "~" . $ob->name . "/" . $self->{path}
		1479	if $self->per_player;
		1480
		1481	$self
		1482	}
		1483
		1484	# find and load all maps in the 3x3 area around a map
		1485	sub load_diag {
725	my ($map) = @_;	1486	my ($map) = @_;
726		1487
727	my $path = $map->tmpname;	1488	my @diag; # diagonal neighbours
728	defined $path or return;
729		1489
730	unlink "$path.pst";	1490	for (0 .. 3) {
731	};	1491	my $neigh = $map->tile_path ($_)
		1492	or next;
		1493	$neigh = find $neigh, $map
		1494	or next;
		1495	$neigh->load;
732		1496
733	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1497	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1498	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1499	}
734		1500
735	#############################################################################	1501	for (@diag) {
736	# load/save perl data associated with player->ob objects	1502	my $neigh = find @$_
737		1503	or next;
738	sub all_objects(@) {	1504	$neigh->load;
739	@_, map all_objects ($_->inv), @_	1505	}
740	}	1506	}
741		1507
742	# TODO: compatibility cruft, remove when no longer needed	1508	sub find_sync {
743	cf::player->attach (	1509	my ($path, $origin) = @_;
744	on_load => sub {
745	my ($pl, $path) = @_;
746		1510
747	for my $o (all_objects $pl->ob) {	1511	cf::sync_job { find $path, $origin }
748	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1512	}
749	$o->set_ob_key_value ("_perl_data");
750		1513
751	%$o = %{ Storable::thaw pack "H*", $value };	1514	sub do_load_sync {
		1515	my ($map) = @_;
		1516
		1517	cf::sync_job { $map->load };
		1518	}
		1519
		1520	our %MAP_PREFETCH;
		1521	our $MAP_PREFETCHER = undef;
		1522
		1523	sub find_async {
		1524	my ($path, $origin) = @_;
		1525
		1526	$path = normalise $path, $origin && $origin->{path};
		1527
		1528	if (my $map = $cf::MAP{$path}) {
		1529	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1530	}
		1531
		1532	undef $MAP_PREFETCH{$path};
		1533	$MAP_PREFETCHER ||= cf::async {
		1534	while (%MAP_PREFETCH) {
		1535	for my $path (keys %MAP_PREFETCH) {
		1536	my $map = find $path
		1537	or next;
		1538	$map->load;
		1539
		1540	delete $MAP_PREFETCH{$path};
752	}	1541	}
753	}	1542	}
		1543	undef $MAP_PREFETCHER;
		1544	};
		1545	$MAP_PREFETCHER->prio (6);
		1546
		1547	()
		1548	}
		1549
		1550	sub save {
		1551	my ($self) = @_;
		1552
		1553	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1554
		1555	$self->{last_save} = $cf::RUNTIME;
		1556
		1557	return unless $self->dirty;
		1558
		1559	my $save = $self->save_path; utf8::encode $save;
		1560	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1561
		1562	$self->{load_path} = $save;
		1563
		1564	return if $self->{deny_save};
		1565
		1566	local $self->{last_access} = $self->last_access;#d#
		1567
		1568	cf::async {
		1569	$_->contr->save for $self->players;
		1570	};
		1571
		1572	if ($uniq) {
		1573	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1574	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1575	} else {
		1576	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
754	},	1577	}
755	);	1578	}
756		1579
757	#############################################################################	1580	sub swap_out {
		1581	my ($self) = @_;
758		1582
759	=head2 CORE EXTENSIONS	1583	# save first because save cedes
		1584	$self->save;
760		1585
761	Functions and methods that extend core crossfire objects.	1586	my $lock = cf::lock_acquire "map_data:" . $self->path;
762		1587
763	=head3 cf::player	1588	return if $self->players;
		1589	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1590	return if $self->{deny_save};
		1591
		1592	$self->clear;
		1593	$self->in_memory (cf::MAP_SWAPPED);
		1594	}
		1595
		1596	sub reset_at {
		1597	my ($self) = @_;
		1598
		1599	# TODO: safety, remove and allow resettable per-player maps
		1600	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1601	return 1e99 if $self->{deny_reset};
		1602
		1603	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1604	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1605
		1606	$time + $to
		1607	}
		1608
		1609	sub should_reset {
		1610	my ($self) = @_;
		1611
		1612	$self->reset_at <= $cf::RUNTIME
		1613	}
		1614
		1615	sub reset {
		1616	my ($self) = @_;
		1617
		1618	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1619
		1620	return if $self->players;
		1621	return if $self->isa ("ext::map_per_player");#d#
		1622
		1623	warn "resetting map ", $self->path;#d#
		1624
		1625	$self->in_memory (cf::MAP_SWAPPED);
		1626
		1627	# need to save uniques path
		1628	unless ($self->{deny_save}) {
		1629	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1630
		1631	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1632	if $uniq;
		1633	}
		1634
		1635	delete $cf::MAP{$self->path};
		1636
		1637	$self->clear;
		1638
		1639	$_->clear_links_to ($self) for values %cf::MAP;
		1640
		1641	$self->unlink_save;
		1642	$self->destroy;
		1643	}
		1644
		1645	my $nuke_counter = "aaaa";
		1646
		1647	sub nuke {
		1648	my ($self) = @_;
		1649
		1650	delete $cf::MAP{$self->path};
		1651
		1652	$self->unlink_save;
		1653
		1654	bless $self, "cf::map";
		1655	delete $self->{deny_reset};
		1656	$self->{deny_save} = 1;
		1657	$self->reset_timeout (1);
		1658	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1659
		1660	$cf::MAP{$self->path} = $self;
		1661
		1662	$self->reset; # polite request, might not happen
		1663	}
		1664
		1665	=item cf::map::unique_maps
		1666
		1667	Returns an arrayref of paths of all shared maps that have
		1668	instantiated unique items. May block.
		1669
		1670	=cut
		1671
		1672	sub unique_maps() {
		1673	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1674	or return;
		1675
		1676	my @paths;
		1677
		1678	for (@$files) {
		1679	utf8::decode $_;
		1680	next if /\.pst$/;
		1681	next unless /^$PATH_SEP/o;
		1682
		1683	push @paths, cf::map::normalise $_;
		1684	}
		1685
		1686	\@paths
		1687	}
		1688
		1689	package cf;
		1690
		1691	=back
		1692
		1693	=head3 cf::object
		1694
		1695	=cut
		1696
		1697	package cf::object;
764		1698
765	=over 4	1699	=over 4
766		1700
767	=item cf::player::exists $login	1701	=item $ob->inv_recursive
768		1702
769	Returns true when the given account exists.	1703	Returns the inventory of the object _and_ their inventories, recursively.
770		1704
771	=cut	1705	=cut
772		1706
773	sub cf::player::exists($) {	1707	sub inv_recursive_;
774	cf::player::find $_[0]	1708	sub inv_recursive_ {
775	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1709	map { $_, inv_recursive_ $_->inv } @_
776	}	1710	}
777		1711
778	=item $player->ext_reply ($msgid, $msgtype, %msg)	1712	sub inv_recursive {
779		1713	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	}	1714	}
		1715
		1716	package cf;
791		1717
792	=back	1718	=back
793		1719
794	=head3 cf::object::player	1720	=head3 cf::object::player
795		1721
…		…
833	(ref $cf::CFG{"may_$access"}	1759	(ref $cf::CFG{"may_$access"}
834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1760	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
835	: $cf::CFG{"may_$access"})	1761	: $cf::CFG{"may_$access"})
836	}	1762	}
837		1763
		1764	=item $player_object->enter_link
		1765
		1766	Freezes the player and moves him/her to a special map (C<{link}>).
		1767
		1768	The player should be reasonably safe there for short amounts of time. You
		1769	I<MUST> call C<leave_link> as soon as possible, though.
		1770
		1771	Will never block.
		1772
		1773	=item $player_object->leave_link ($map, $x, $y)
		1774
		1775	Moves the player out of the special C<{link}> map onto the specified
		1776	map. If the map is not valid (or omitted), the player will be moved back
		1777	to the location he/she was before the call to C<enter_link>, or, if that
		1778	fails, to the emergency map position.
		1779
		1780	Might block.
		1781
		1782	=cut
		1783
		1784	sub link_map {
		1785	unless ($LINK_MAP) {
		1786	$LINK_MAP = cf::map::find "{link}"
		1787	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1788	$LINK_MAP->load;
		1789	}
		1790
		1791	$LINK_MAP
		1792	}
		1793
		1794	sub cf::object::player::enter_link {
		1795	my ($self) = @_;
		1796
		1797	$self->deactivate_recursive;
		1798
		1799	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1800
		1801	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1802	if $self->map;
		1803
		1804	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1805	}
		1806
		1807	sub cf::object::player::leave_link {
		1808	my ($self, $map, $x, $y) = @_;
		1809
		1810	my $link_pos = delete $self->{_link_pos};
		1811
		1812	unless ($map) {
		1813	# restore original map position
		1814	($map, $x, $y) = @{ $link_pos || [] };
		1815	$map = cf::map::find $map;
		1816
		1817	unless ($map) {
		1818	($map, $x, $y) = @$EMERGENCY_POSITION;
		1819	$map = cf::map::find $map
		1820	or die "FATAL: cannot load emergency map\n";
		1821	}
		1822	}
		1823
		1824	($x, $y) = (-1, -1)
		1825	unless (defined $x) && (defined $y);
		1826
		1827	# use -1 or undef as default coordinates, not 0, 0
		1828	($x, $y) = ($map->enter_x, $map->enter_y)
		1829	if $x <=0 && $y <= 0;
		1830
		1831	$map->load;
		1832	$map->load_diag;
		1833
		1834	return unless $self->contr->active;
		1835	$self->activate_recursive;
		1836
		1837	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1838	$self->enter_map ($map, $x, $y);
		1839	}
		1840
		1841	cf::player->attach (
		1842	on_logout => sub {
		1843	my ($pl) = @_;
		1844
		1845	# abort map switching before logout
		1846	if ($pl->ob->{_link_pos}) {
		1847	cf::sync_job {
		1848	$pl->ob->leave_link
		1849	};
		1850	}
		1851	},
		1852	on_login => sub {
		1853	my ($pl) = @_;
		1854
		1855	# try to abort aborted map switching on player login :)
		1856	# should happen only on crashes
		1857	if ($pl->ob->{_link_pos}) {
		1858	$pl->ob->enter_link;
		1859	(async {
		1860	$pl->ob->reply (undef,
		1861	"There was an internal problem at your last logout, "
		1862	. "the server will try to bring you to your intended destination in a second.",
		1863	cf::NDI_RED);
		1864	# we need this sleep as the login has a concurrent enter_exit running
		1865	# and this sleep increases chances of the player not ending up in scorn
		1866	Coro::Timer::sleep 1;
		1867	$pl->ob->leave_link;
		1868	})->prio (2);
		1869	}
		1870	},
		1871	);
		1872
		1873	=item $player_object->goto ($path, $x, $y)
		1874
		1875	=cut
		1876
		1877	sub cf::object::player::goto {
		1878	my ($self, $path, $x, $y) = @_;
		1879
		1880	$self->enter_link;
		1881
		1882	(async {
		1883	my $map = eval {
		1884	my $map = cf::map::find $path;
		1885	$map = $map->customise_for ($self) if $map;
		1886	$map
		1887	} or
		1888	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1889
		1890	$self->leave_link ($map, $x, $y);
		1891	})->prio (1);
		1892	}
		1893
		1894	=item $player_object->enter_exit ($exit_object)
		1895
		1896	=cut
		1897
		1898	sub parse_random_map_params {
		1899	my ($spec) = @_;
		1900
		1901	my $rmp = { # defaults
		1902	xsize => (cf::rndm 15, 40),
		1903	ysize => (cf::rndm 15, 40),
		1904	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1905	#layout => string,
		1906	};
		1907
		1908	for (split /\n/, $spec) {
		1909	my ($k, $v) = split /\s+/, $_, 2;
		1910
		1911	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1912	}
		1913
		1914	$rmp
		1915	}
		1916
		1917	sub prepare_random_map {
		1918	my ($exit) = @_;
		1919
		1920	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1921
		1922	# all this does is basically replace the /! path by
		1923	# a new random map path (?random/...) with a seed
		1924	# that depends on the exit object
		1925
		1926	my $rmp = parse_random_map_params $exit->msg;
		1927
		1928	if ($exit->map) {
		1929	$rmp->{region} = $exit->region->name;
		1930	$rmp->{origin_map} = $exit->map->path;
		1931	$rmp->{origin_x} = $exit->x;
		1932	$rmp->{origin_y} = $exit->y;
		1933	}
		1934
		1935	$rmp->{random_seed} ||= $exit->random_seed;
		1936
		1937	my $data = cf::to_json $rmp;
		1938	my $md5 = Digest::MD5::md5_hex $data;
		1939	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1940
		1941	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1942	aio_write $fh, 0, (length $data), $data, 0;
		1943	undef $fh;
		1944	aio_rename "$meta~", $meta;
		1945
		1946	$exit->slaying ("?random/$md5");
		1947	$exit->msg (undef);
		1948	}
		1949	}
		1950
		1951	sub cf::object::player::enter_exit {
		1952	my ($self, $exit) = @_;
		1953
		1954	return unless $self->type == cf::PLAYER;
		1955
		1956	if ($exit->slaying eq "/!") {
		1957	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1958	cf::sync_job { prepare_random_map $exit };
		1959	}
		1960
		1961	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1962	my $hp = $exit->stats->hp;
		1963	my $sp = $exit->stats->sp;
		1964
		1965	$self->enter_link;
		1966
		1967	(async {
		1968	$self->deactivate_recursive; # just to be sure
		1969	unless (eval {
		1970	$self->goto ($slaying, $hp, $sp);
		1971
		1972	1;
		1973	}) {
		1974	$self->message ("Something went wrong deep within the crossfire server. "
		1975	. "I'll try to bring you back to the map you were before. "
		1976	. "Please report this to the dungeon master!",
		1977	cf::NDI_UNIQUE | cf::NDI_RED);
		1978
		1979	warn "ERROR in enter_exit: $@";
		1980	$self->leave_link;
		1981	}
		1982	})->prio (1);
		1983	}
		1984
838	=head3 cf::client	1985	=head3 cf::client
839		1986
840	=over 4	1987	=over 4
841		1988
842	=item $client->send_drawinfo ($text, $flags)	1989	=item $client->send_drawinfo ($text, $flags)
…		…
885	on_reply => sub {	2032	on_reply => sub {
886	my ($ns, $msg) = @_;	2033	my ($ns, $msg) = @_;
887		2034
888	# this weird shuffling is so that direct followup queries	2035	# this weird shuffling is so that direct followup queries
889	# get handled first	2036	# get handled first
890	my $queue = delete $ns->{query_queue};	2037	my $queue = delete $ns->{query_queue}
		2038	or return; # be conservative, not sure how that can happen, but we saw a crash here
891		2039
892	(shift @$queue)->[1]->($msg);	2040	(shift @$queue)->[1]->($msg);
		2041	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
893		2042
894	push @{ $ns->{query_queue} }, @$queue;	2043	push @{ $ns->{query_queue} }, @$queue;
895		2044
896	if (@{ $ns->{query_queue} } == @$queue) {	2045	if (@{ $ns->{query_queue} } == @$queue) {
897	if (@$queue) {	2046	if (@$queue) {
898	$ns->send_packet ($ns->{query_queue}[0][0]);	2047	$ns->send_packet ($ns->{query_queue}[0][0]);
899	} else {	2048	} else {
900	$ns->state (ST_PLAYING);	2049	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
901	}	2050	}
902	}	2051	}
		2052	},
		2053	);
		2054
		2055	=item $client->async (\&cb)
		2056
		2057	Create a new coroutine, running the specified callback. The coroutine will
		2058	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2059	or loss of connection).
		2060
		2061	=cut
		2062
		2063	sub cf::client::async {
		2064	my ($self, $cb) = @_;
		2065
		2066	my $coro = &Coro::async ($cb);
		2067
		2068	$coro->on_destroy (sub {
		2069	delete $self->{_coro}{$coro+0};
		2070	});
		2071
		2072	$self->{_coro}{$coro+0} = $coro;
		2073
		2074	$coro
		2075	}
		2076
		2077	cf::client->attach (
		2078	on_destroy => sub {
		2079	my ($ns) = @_;
		2080
		2081	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
903	},	2082	},
904	);	2083	);
905		2084
906	=back	2085	=back
907		2086
…		…
1028	The parameter C<$family> should best start with the name of the extension	2207	The parameter C<$family> should best start with the name of the extension
1029	using it, it should be unique.	2208	using it, it should be unique.
1030		2209
1031	=over 4	2210	=over 4
1032		2211
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	2212	=item $value = cf::db_get $family => $key
1040		2213
1041	Returns a single value from the database	2214	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		2215
1048	=item cf::db_put $family => $key => $value	2216	=item cf::db_put $family => $key => $value
1049		2217
1050	Stores the given C<$value> in the family hash. Updates are delayed, if you	2218	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		2219
1061	=cut	2220	=cut
1062		2221
1063	our $DB;	2222	our $DB;
1064		2223
1065	{	2224	sub db_init {
		2225	unless ($DB) {
		2226	$DB = BDB::db_create $DB_ENV;
		2227
		2228	cf::sync_job {
		2229	eval {
		2230	$DB->set_flags (BDB::CHKSUM);
		2231
		2232	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2233	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2234	cf::cleanup "db_open(db): $!" if $!;
		2235	};
		2236	cf::cleanup "db_open(db): $@" if $@;
		2237	};
		2238
1066	my $path = cf::localdir . "/database.pst";	2239	my $path = cf::localdir . "/database.pst";
		2240	if (stat $path) {
		2241	cf::sync_job {
		2242	my $pst = Storable::retrieve $path;
1067		2243
1068	sub db_load() {	2244	cf::db_put (board => data => $pst->{board});
1069	warn "loading database $path\n";#d# remove later	2245	cf::db_put (guildrules => data => $pst->{guildrules});
1070	$DB = stat $path ? Storable::retrieve $path : { };	2246	cf::db_put (rent => balance => $pst->{rent}{balance});
1071	}	2247	BDB::db_env_txn_checkpoint $DB_ENV;
1072		2248
1073	my $pid;	2249	unlink $path;
1074
1075	sub db_save() {
1076	warn "saving database $path\n";#d# remove later
1077	waitpid $pid, 0 if $pid;
1078	if (0 == ($pid = fork)) {
1079	$DB->{_meta}{version} = 1;
1080	Storable::nstore $DB, "$path~";
1081	rename "$path~", $path;
1082	cf::_exit 0 if defined $pid;
1083	}	2250	};
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	});
1096
1097	sub db_dirty() {
1098	$dirty = 1;
1099	$idle->start;
1100	}
1101
1102	sub db_get($;$) {
1103	@_ >= 2
1104	? $DB->{$_[0]}{$_[1]}
1105	: ($DB->{$_[0]} ||= { })
1106	}
1107
1108	sub db_put($$;$) {
1109	if (@_ >= 3) {
1110	$DB->{$_[0]}{$_[1]} = $_[2];
1111	} else {
1112	$DB->{$_[0]} = $_[1];
1113	}
1114	db_dirty;
1115	}
1116
1117	cf::global->attach (
1118	prio => 10000,
1119	on_cleanup => sub {
1120	db_sync;
1121	},	2251	}
1122	);	2252	}
		2253	}
		2254
		2255	sub db_get($$) {
		2256	my $key = "$_[0]/$_[1]";
		2257
		2258	cf::sync_job {
		2259	BDB::db_get $DB, undef, $key, my $data;
		2260
		2261	$! ? ()
		2262	: Compress::LZF::sthaw $data
		2263	}
		2264	}
		2265
		2266	sub db_put($$$) {
		2267	BDB::dbreq_pri 4;
		2268	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
1123	}	2269	}
1124		2270
1125	#############################################################################	2271	#############################################################################
1126	# the server's main()	2272	# the server's init and main functions
		2273
		2274	sub load_faces {
		2275	my $path = sprintf "%s/faces", cf::datadir;
		2276
		2277	warn "loading faces from $path\n";
		2278
		2279	my $faces;
		2280	0 < aio_load $path, $faces
		2281	or die "$path: $!";
		2282
		2283	Coro::cede;
		2284	$faces = Storable::thaw $faces;
		2285	Coro::cede;
		2286
		2287	while (my ($face, $info) = each %$faces) {
		2288	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2289	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2290	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2291	Coro::cede;
		2292	}
		2293
		2294	1
		2295	}
		2296
		2297	sub reload_resources {
		2298	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2299	or die "unable to load regions file\n";#d#
		2300	load_faces
		2301	or die "unable to load faces\n";#d#
		2302	}
		2303
		2304	sub init {
		2305	reload_resources;
		2306	}
1127		2307
1128	sub cfg_load {	2308	sub cfg_load {
1129	open my $fh, "<:utf8", cf::confdir . "/config"	2309	open my $fh, "<:utf8", cf::confdir . "/config"
1130	or return;	2310	or return;
1131		2311
1132	local $/;	2312	local $/;
1133	*CFG = YAML::Syck::Load <$fh>;	2313	*CFG = YAML::Syck::Load <$fh>;
		2314
		2315	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2316
		2317	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2318	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2319
		2320	if (exists $CFG{mlockall}) {
		2321	eval {
		2322	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2323	and die "WARNING: m(un)lockall failed: $!\n";
		2324	};
		2325	warn $@ if $@;
		2326	}
1134	}	2327	}
1135		2328
1136	sub main {	2329	sub main {
		2330	# we must not ever block the main coroutine
		2331	local $Coro::idle = sub {
		2332	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2333	(async {
		2334	Event::one_event;
		2335	})->prio (Coro::PRIO_MAX);
		2336	};
		2337
1137	cfg_load;	2338	cfg_load;
1138	db_load;	2339	db_init;
1139	load_extensions;	2340	load_extensions;
		2341
		2342	$TICK_WATCHER->start;
1140	Event::loop;	2343	Event::loop;
1141	}	2344	}
1142		2345
1143	#############################################################################	2346	#############################################################################
1144	# initialisation	2347	# initialisation and cleanup
1145		2348
		2349	# install some emergency cleanup handlers
		2350	BEGIN {
		2351	for my $signal (qw(INT HUP TERM)) {
		2352	Event->signal (
		2353	reentrant => 0,
		2354	data => WF_AUTOCANCEL,
		2355	signal => $signal,
		2356	prio => 0,
		2357	cb => sub {
		2358	cf::cleanup "SIG$signal";
		2359	},
		2360	);
		2361	}
		2362	}
		2363
		2364	sub emergency_save() {
		2365	my $freeze_guard = cf::freeze_mainloop;
		2366
		2367	warn "enter emergency perl save\n";
		2368
		2369	cf::sync_job {
		2370	# use a peculiar iteration method to avoid tripping on perl
		2371	# refcount bugs in for. also avoids problems with players
		2372	# and maps saved/destroyed asynchronously.
		2373	warn "begin emergency player save\n";
		2374	for my $login (keys %cf::PLAYER) {
		2375	my $pl = $cf::PLAYER{$login} or next;
		2376	$pl->valid or next;
		2377	$pl->save;
		2378	}
		2379	warn "end emergency player save\n";
		2380
		2381	warn "begin emergency map save\n";
		2382	for my $path (keys %cf::MAP) {
		2383	my $map = $cf::MAP{$path} or next;
		2384	$map->valid or next;
		2385	$map->save;
		2386	}
		2387	warn "end emergency map save\n";
		2388
		2389	warn "begin emergency database checkpoint\n";
		2390	BDB::db_env_txn_checkpoint $DB_ENV;
		2391	warn "end emergency database checkpoint\n";
		2392	};
		2393
		2394	warn "leave emergency perl save\n";
		2395	}
		2396
		2397	sub post_cleanup {
		2398	my ($make_core) = @_;
		2399
		2400	warn Carp::longmess "post_cleanup backtrace"
		2401	if $make_core;
		2402	}
		2403
1146	sub _perl_reload(&) {	2404	sub reload() {
1147	my ($msg) = @_;	2405	# can/must only be called in main
		2406	if ($Coro::current != $Coro::main) {
		2407	warn "can only reload from main coroutine";
		2408	return;
		2409	}
1148		2410
1149	$msg->("reloading...");	2411	warn "reloading...";
1150		2412
1151	eval {	2413	warn "entering sync_job";
1152	# cancel all watchers	2414
		2415	cf::sync_job {
		2416	cf::write_runtime; # external watchdog should not bark
		2417	cf::emergency_save;
		2418	cf::write_runtime; # external watchdog should not bark
		2419
		2420	warn "syncing database to disk";
		2421	BDB::db_env_txn_checkpoint $DB_ENV;
		2422
		2423	# if anything goes wrong in here, we should simply crash as we already saved
		2424
		2425	warn "cancelling all WF_AUTOCANCEL watchers";
1153	for (Event::all_watchers) {	2426	for (Event::all_watchers) {
1154	$_->cancel if $_->data & WF_AUTOCANCEL;	2427	$_->cancel if $_->data & WF_AUTOCANCEL;
1155	}	2428	}
1156		2429
1157	# unload all extensions	2430	warn "flushing outstanding aio requests";
1158	for (@exts) {	2431	for (;;) {
1159	$msg->("unloading <$_>");	2432	BDB::flush;
1160	unload_extension $_;	2433	IO::AIO::flush;
		2434	Coro::cede;
		2435	last unless IO::AIO::nreqs || BDB::nreqs;
		2436	warn "iterate...";
		2437	}
		2438
		2439	++$RELOAD;
		2440
		2441	warn "cancelling all extension coros";
		2442	$_->cancel for values %EXT_CORO;
		2443	%EXT_CORO = ();
		2444
		2445	warn "removing commands";
		2446	%COMMAND = ();
		2447
		2448	warn "removing ext commands";
		2449	%EXTCMD = ();
		2450
		2451	warn "unloading/nuking all extensions";
		2452	for my $pkg (@EXTS) {
		2453	warn "... unloading $pkg";
		2454
		2455	if (my $cb = $pkg->can ("unload")) {
		2456	eval {
		2457	$cb->($pkg);
		2458	1
		2459	} or warn "$pkg unloaded, but with errors: $@";
1161	}	2460	}
1162		2461
		2462	warn "... nuking $pkg";
		2463	Symbol::delete_package $pkg;
		2464	}
		2465
1163	# unload all modules loaded from $LIBDIR	2466	warn "unloading all perl modules loaded from $LIBDIR";
1164	while (my ($k, $v) = each %INC) {	2467	while (my ($k, $v) = each %INC) {
1165	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2468	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1166		2469
1167	$msg->("removing <$k>");	2470	warn "... unloading $k";
1168	delete $INC{$k};	2471	delete $INC{$k};
1169		2472
1170	$k =~ s/\.pm$//;	2473	$k =~ s/\.pm$//;
1171	$k =~ s/\//::/g;	2474	$k =~ s/\//::/g;
1172		2475
…		…
1175	}	2478	}
1176		2479
1177	Symbol::delete_package $k;	2480	Symbol::delete_package $k;
1178	}	2481	}
1179		2482
1180	# sync database to disk
1181	cf::db_sync;
1182
1183	# get rid of safe::, as good as possible	2483	warn "getting rid of safe::, as good as possible";
1184	Symbol::delete_package "safe::$_"	2484	Symbol::delete_package "safe::$_"
1185	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2485	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1186		2486
1187	# remove register_script_function callbacks
1188	# TODO
1189
1190	# unload cf.pm "a bit"	2487	warn "unloading cf.pm \"a bit\"";
1191	delete $INC{"cf.pm"};	2488	delete $INC{"cf.pm"};
1192		2489
1193	# don't, removes xs symbols, too,	2490	# don't, removes xs symbols, too,
1194	# and global variables created in xs	2491	# and global variables created in xs
1195	#Symbol::delete_package __PACKAGE__;	2492	#Symbol::delete_package __PACKAGE__;
1196		2493
1197	# reload cf.pm	2494	warn "unload completed, starting to reload now";
		2495
1198	$msg->("reloading cf.pm");	2496	warn "reloading cf.pm";
1199	require cf;	2497	require cf;
		2498	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1200		2499
1201	# load config and database again	2500	warn "loading config and database again";
1202	cf::cfg_load;	2501	cf::cfg_load;
1203	cf::db_load;
1204		2502
1205	# load extensions	2503	warn "loading extensions";
1206	$msg->("load extensions");
1207	cf::load_extensions;	2504	cf::load_extensions;
1208		2505
1209	# reattach attachments to objects	2506	warn "reattaching attachments to objects/players";
1210	$msg->("reattach");	2507	_global_reattach; # objects, sockets
1211	_global_reattach;	2508	warn "reattaching attachments to maps";
		2509	reattach $_ for values %MAP;
		2510	warn "reattaching attachments to players";
		2511	reattach $_ for values %PLAYER;
		2512
		2513	warn "loading reloadable resources";
		2514	reload_resources;
		2515
		2516	warn "leaving sync_job";
		2517
		2518	1
		2519	} or do {
		2520	warn $@;
		2521	warn "error while reloading, exiting.";
		2522	exit 1;
1212	};	2523	};
1213	$msg->($@) if $@;
1214		2524
1215	$msg->("reloaded");	2525	warn "reloaded";
1216	};	2526	};
1217		2527
1218	sub perl_reload() {	2528	our $RELOAD_WATCHER; # used only during reload
1219	_perl_reload {
1220	warn $_[0];
1221	print "$_[0]\n";
1222	};
1223	}
1224		2529
1225	register "<global>", __PACKAGE__;
1226
1227	register_command "perl-reload" => sub {	2530	register_command "reload" => sub {
1228	my ($who, $arg) = @_;	2531	my ($who, $arg) = @_;
1229		2532
1230	if ($who->flag (FLAG_WIZ)) {	2533	if ($who->flag (FLAG_WIZ)) {
1231	_perl_reload {	2534	$who->message ("reloading server.");
1232	warn $_[0];	2535
1233	$who->message ($_[0]);	2536	# doing reload synchronously and two reloads happen back-to-back,
		2537	# coro crashes during coro_state_free->destroy here.
		2538
		2539	$RELOAD_WATCHER ||= Event->timer (
		2540	reentrant => 0,
		2541	after => 0,
		2542	data => WF_AUTOCANCEL,
		2543	cb => sub {
		2544	reload;
		2545	undef $RELOAD_WATCHER;
		2546	},
1234	};	2547	);
1235	}	2548	}
1236	};	2549	};
1237		2550
1238	unshift @INC, $LIBDIR;	2551	unshift @INC, $LIBDIR;
1239		2552
		2553	my $bug_warning = 0;
		2554
1240	$TICK_WATCHER = Event->timer (	2555	$TICK_WATCHER = Event->timer (
		2556	reentrant => 0,
		2557	parked => 1,
1241	prio => 0,	2558	prio => 0,
1242	at => $NEXT_TICK || 1,	2559	at => $NEXT_TICK || $TICK,
1243	data => WF_AUTOCANCEL,	2560	data => WF_AUTOCANCEL,
1244	cb => sub {	2561	cb => sub {
		2562	if ($Coro::current != $Coro::main) {
		2563	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2564	unless ++$bug_warning > 10;
		2565	return;
		2566	}
		2567
		2568	$NOW = Event::time;
		2569
1245	cf::server_tick; # one server iteration	2570	cf::server_tick; # one server iteration
1246		2571	$RUNTIME += $TICK;
1247	my $NOW = Event::time;
1248	$NEXT_TICK += $TICK;	2572	$NEXT_TICK += $TICK;
1249		2573
		2574	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2575	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2576	Coro::async_pool {
		2577	write_runtime
		2578	or warn "ERROR: unable to write runtime file: $!";
		2579	};
		2580	}
		2581
		2582	$WAIT_FOR_TICK->broadcast;
		2583	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2584
		2585	# my $AFTER = Event::time;
		2586	# warn $AFTER - $NOW;#d#
		2587
1250	# if we are delayed by four ticks or more, skip them all	2588	# if we are delayed by four ticks or more, skip them all
1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2589	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1252		2590
1253	$TICK_WATCHER->at ($NEXT_TICK);	2591	$TICK_WATCHER->at ($NEXT_TICK);
1254	$TICK_WATCHER->start;	2592	$TICK_WATCHER->start;
1255	},	2593	},
1256	);	2594	);
1257		2595
		2596	{
		2597	BDB::max_poll_time $TICK * 0.1;
		2598	$BDB_POLL_WATCHER = Event->io (
		2599	reentrant => 0,
		2600	fd => BDB::poll_fileno,
		2601	poll => 'r',
		2602	prio => 0,
		2603	data => WF_AUTOCANCEL,
		2604	cb => \&BDB::poll_cb,
		2605	);
		2606	BDB::min_parallel 8;
		2607
		2608	BDB::set_sync_prepare {
		2609	my $status;
		2610	my $current = $Coro::current;
		2611	(
		2612	sub {
		2613	$status = $!;
		2614	$current->ready; undef $current;
		2615	},
		2616	sub {
		2617	Coro::schedule while defined $current;
		2618	$! = $status;
		2619	},
		2620	)
		2621	};
		2622
		2623	unless ($DB_ENV) {
		2624	$DB_ENV = BDB::db_env_create;
		2625
		2626	cf::sync_job {
		2627	eval {
		2628	BDB::db_env_open
		2629	$DB_ENV,
		2630	$BDB_ENV_DIR,
		2631	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2632	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2633	0666;
		2634
		2635	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2636
		2637	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2638	$DB_ENV->set_lk_detect;
		2639	};
		2640
		2641	cf::cleanup "db_env_open(db): $@" if $@;
		2642	};
		2643	}
		2644	}
		2645
		2646	{
		2647	IO::AIO::min_parallel 8;
		2648
		2649	undef $Coro::AIO::WATCHER;
1258	IO::AIO::max_poll_time $TICK * 0.2;	2650	IO::AIO::max_poll_time $TICK * 0.1;
1259		2651	$AIO_POLL_WATCHER = Event->io (
1260	Event->io (fd => IO::AIO::poll_fileno,	2652	reentrant => 0,
1261	poll => 'r',
1262	prio => 5,
1263	data => WF_AUTOCANCEL,	2653	data => WF_AUTOCANCEL,
		2654	fd => IO::AIO::poll_fileno,
		2655	poll => 'r',
		2656	prio => 6,
1264	cb => \&IO::AIO::poll_cb);	2657	cb => \&IO::AIO::poll_cb,
		2658	);
		2659	}
		2660
		2661	END { cf::emergency_save }
1265		2662
1266	1	2663	1
1267		2664

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