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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.99 by root, Sat Dec 23 05:25:35 2006 UTC vs.
Revision 1.211 by root, Tue Feb 13 16:23:32 2007 UTC

…		…
8	use Storable;	8	use Storable;
9	use Opcode;	9	use Opcode;
10	use Safe;	10	use Safe;
11	use Safe::Hole;	11	use Safe::Hole;
12		12
13	use Coro;	13	use Coro 3.5 ();
14	use Coro::Event;	14	use Coro::Event;
15	use Coro::Timer;	15	use Coro::Timer;
16	use Coro::Signal;	16	use Coro::Signal;
17	use Coro::Semaphore;	17	use Coro::Semaphore;
		18	use Coro::AIO;
18		19
		20	use BDB ();
		21	use Data::Dumper;
		22	use Digest::MD5;
		23	use Fcntl;
19	use IO::AIO 2.3;	24	use IO::AIO 2.32 ();
20	use YAML::Syck ();	25	use YAML::Syck ();
21	use Time::HiRes;	26	use Time::HiRes;
		27	use Compress::LZF;
		28
		29	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
22		30
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	31	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
24		34
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	35	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26	$YAML::Syck::ImplicitUnicode = 1;	36	$YAML::Syck::ImplicitUnicode = 1;
27		37
28	$Coro::main->prio (Coro::PRIO_MIN);	38	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		39
32	our %COMMAND = ();	40	our %COMMAND = ();
33	our %COMMAND_TIME = ();	41	our %COMMAND_TIME = ();
		42
		43	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	44	our %EXTCMD = ();
35		45	our %EXT_CORO = (); # coroutines bound to extensions
36	_init_vars;	46	our %EXT_MAP = (); # pluggable maps
37		47
38	our @EVENT;	48	our @EVENT;
39	our $LIBDIR = datadir . "/ext";	49	our $LIBDIR = datadir . "/ext";
40		50
41	our $TICK = MAX_TIME * 1e-6;	51	our $TICK = MAX_TIME * 1e-6;
42	our $TICK_WATCHER;	52	our $TICK_WATCHER;
		53	our $AIO_POLL_WATCHER;
		54	our $WRITE_RUNTIME_WATCHER;
43	our $NEXT_TICK;	55	our $NEXT_TICK;
		56	our $NOW;
		57	our $USE_FSYNC = 1; # use fsync to write maps - default off
		58
		59	our $BDB_POLL_WATCHER;
		60	our $DB_ENV;
44		61
45	our %CFG;	62	our %CFG;
46		63
47	our $UPTIME; $UPTIME ||= time;	64	our $UPTIME; $UPTIME ||= time;
		65	our $RUNTIME;
		66
		67	our %PLAYER; # all users
		68	our %MAP; # all maps
		69	our $LINK_MAP; # the special {link} map, which is always available
		70	our $RANDOM_MAPS = cf::localdir . "/random";
		71	our $BDB_ENV_DIR = cf::localdir . "/db";
		72
		73	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		74	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		75
		76	# used to convert map paths into valid unix filenames by replacing / by ∕
		77	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		78
		79	binmode STDOUT;
		80	binmode STDERR;
		81
		82	# read virtual server time, if available
		83	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		84	open my $fh, "<", cf::localdir . "/runtime"
		85	or die "unable to read runtime file: $!";
		86	$RUNTIME = <$fh> + 0.;
		87	}
		88
		89	mkdir cf::localdir;
		90	mkdir cf::localdir . "/" . cf::playerdir;
		91	mkdir cf::localdir . "/" . cf::tmpdir;
		92	mkdir cf::localdir . "/" . cf::uniquedir;
		93	mkdir $RANDOM_MAPS;
		94	mkdir $BDB_ENV_DIR;
		95
		96	our $EMERGENCY_POSITION;
		97
		98	sub cf::map::normalise;
48		99
49	#############################################################################	100	#############################################################################
50		101
51	=head2 GLOBAL VARIABLES	102	=head2 GLOBAL VARIABLES
52		103
53	=over 4	104	=over 4
54		105
55	=item $cf::UPTIME	106	=item $cf::UPTIME
56		107
57	The timestamp of the server start (so not actually an uptime).	108	The timestamp of the server start (so not actually an uptime).
		109
		110	=item $cf::RUNTIME
		111
		112	The time this server has run, starts at 0 and is increased by $cf::TICK on
		113	every server tick.
58		114
59	=item $cf::LIBDIR	115	=item $cf::LIBDIR
60		116
61	The perl library directory, where extensions and cf-specific modules can	117	The perl library directory, where extensions and cf-specific modules can
62	be found. It will be added to C<@INC> automatically.	118	be found. It will be added to C<@INC> automatically.
63		119
		120	=item $cf::NOW
		121
		122	The time of the last (current) server tick.
		123
64	=item $cf::TICK	124	=item $cf::TICK
65		125
66	The interval between server ticks, in seconds.	126	The interval between server ticks, in seconds.
67		127
68	=item %cf::CFG	128	=item %cf::CFG
69		129
70	Configuration for the server, loaded from C</etc/crossfire/config>, or	130	Configuration for the server, loaded from C</etc/crossfire/config>, or
71	from wherever your confdir points to.	131	from wherever your confdir points to.
		132
		133	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		134
		135	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		136	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		137	processing has been done. Call C<< ->wait >> on them to maximise the
		138	window of cpu time available, or simply to synchronise to the server tick.
72		139
73	=back	140	=back
74		141
75	=cut	142	=cut
76		143
77	BEGIN {	144	BEGIN {
78	*CORE::GLOBAL::warn = sub {	145	*CORE::GLOBAL::warn = sub {
79	my $msg = join "", @_;	146	my $msg = join "", @_;
		147	utf8::encode $msg;
		148
80	$msg .= "\n"	149	$msg .= "\n"
81	unless $msg =~ /\n$/;	150	unless $msg =~ /\n$/;
82		151
83	print STDERR "cfperl: $msg";
84	LOG llevError, "cfperl: $msg";	152	LOG llevError, $msg;
85	};	153	};
86	}	154	}
87		155
88	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	156	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
89	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	157	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
93	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	161	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
94		162
95	# we bless all objects into (empty) derived classes to force a method lookup	163	# we bless all objects into (empty) derived classes to force a method lookup
96	# within the Safe compartment.	164	# within the Safe compartment.
97	for my $pkg (qw(	165	for my $pkg (qw(
98	cf::global	166	cf::global cf::attachable
99	cf::object cf::object::player	167	cf::object cf::object::player
100	cf::client cf::player	168	cf::client cf::player
101	cf::arch cf::living	169	cf::arch cf::living
102	cf::map cf::party cf::region	170	cf::map cf::party cf::region
103	)) {	171	)) {
…		…
107		175
108	$Event::DIED = sub {	176	$Event::DIED = sub {
109	warn "error in event callback: @_";	177	warn "error in event callback: @_";
110	};	178	};
111		179
112	my %ext_pkg;
113	my @exts;
114	my @hook;
115
116	=head2 UTILITY FUNCTIONS	180	=head2 UTILITY FUNCTIONS
117		181
118	=over 4	182	=over 4
119		183
		184	=item dumpval $ref
		185
120	=cut	186	=cut
		187
		188	sub dumpval {
		189	eval {
		190	local $SIG{__DIE__};
		191	my $d;
		192	if (1) {
		193	$d = new Data::Dumper([$_[0]], ["*var"]);
		194	$d->Terse(1);
		195	$d->Indent(2);
		196	$d->Quotekeys(0);
		197	$d->Useqq(1);
		198	#$d->Bless(...);
		199	$d->Seen($_[1]) if @_ > 1;
		200	$d = $d->Dump();
		201	}
		202	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		203	$d
		204	} || "[unable to dump $_[0]: '$@']";
		205	}
121		206
122	use JSON::Syck (); # TODO# replace by JSON::PC once working	207	use JSON::Syck (); # TODO# replace by JSON::PC once working
123		208
124	=item $ref = cf::from_json $json	209	=item $ref = cf::from_json $json
125		210
…		…
139	=cut	224	=cut
140		225
141	sub to_json($) {	226	sub to_json($) {
142	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	227	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
143	JSON::Syck::Dump $_[0]	228	JSON::Syck::Dump $_[0]
		229	}
		230
		231	=item cf::lock_wait $string
		232
		233	Wait until the given lock is available. See cf::lock_acquire.
		234
		235	=item my $lock = cf::lock_acquire $string
		236
		237	Wait until the given lock is available and then acquires it and returns
		238	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		239	for example when the coroutine gets canceled), the lock is automatically
		240	returned.
		241
		242	Lock names should begin with a unique identifier (for example, cf::map::find
		243	uses map_find and cf::map::load uses map_load).
		244
		245	=cut
		246
		247	our %LOCK;
		248
		249	sub lock_wait($) {
		250	my ($key) = @_;
		251
		252	# wait for lock, if any
		253	while ($LOCK{$key}) {
		254	push @{ $LOCK{$key} }, $Coro::current;
		255	Coro::schedule;
		256	}
		257	}
		258
		259	sub lock_acquire($) {
		260	my ($key) = @_;
		261
		262	# wait, to be sure we are not locked
		263	lock_wait $key;
		264
		265	$LOCK{$key} = [];
		266
		267	Coro::guard {
		268	# wake up all waiters, to be on the safe side
		269	$_->ready for @{ delete $LOCK{$key} };
		270	}
		271	}
		272
		273	sub freeze_mainloop {
		274	return unless $TICK_WATCHER->is_active;
		275
		276	my $guard = Coro::guard {
		277	$TICK_WATCHER->start;
		278	$WRITE_RUNTIME_WATCHER->start;
		279	};
		280	$WRITE_RUNTIME_WATCHER->stop;
		281	$TICK_WATCHER->stop;
		282	$guard
		283	}
		284
		285	=item cf::async { BLOCK }
		286
		287	Currently the same as Coro::async_pool, meaning you cannot use
		288	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		289	thing you are allowed to do is call C<prio> on it.
		290
		291	=cut
		292
		293	BEGIN { *async = \&Coro::async_pool }
		294
		295	=item cf::sync_job { BLOCK }
		296
		297	The design of crossfire+ requires that the main coro ($Coro::main) is
		298	always able to handle events or runnable, as crossfire+ is only partly
		299	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		300
		301	If it must be done, put the blocking parts into C<sync_job>. This will run
		302	the given BLOCK in another coroutine while waiting for the result. The
		303	server will be frozen during this time, so the block should either finish
		304	fast or be very important.
		305
		306	=cut
		307
		308	sub sync_job(&) {
		309	my ($job) = @_;
		310
		311	if ($Coro::current == $Coro::main) {
		312	# this is the main coro, too bad, we have to block
		313	# till the operation succeeds, freezing the server :/
		314
		315	# TODO: use suspend/resume instead
		316	# (but this is cancel-safe)
		317	my $freeze_guard = freeze_mainloop;
		318
		319	my $busy = 1;
		320	my @res;
		321
		322	(async {
		323	@res = eval { $job->() };
		324	warn $@ if $@;
		325	undef $busy;
		326	})->prio (Coro::PRIO_MAX);
		327
		328	while ($busy) {
		329	Coro::cede or Event::one_event;
		330	}
		331
		332	wantarray ? @res : $res[0]
		333	} else {
		334	# we are in another coroutine, how wonderful, everything just works
		335
		336	$job->()
		337	}
		338	}
		339
		340	=item $coro = cf::async_ext { BLOCK }
		341
		342	Like async, but this coro is automatically being canceled when the
		343	extension calling this is being unloaded.
		344
		345	=cut
		346
		347	sub async_ext(&) {
		348	my $cb = shift;
		349
		350	my $coro = &Coro::async ($cb);
		351
		352	$coro->on_destroy (sub {
		353	delete $EXT_CORO{$coro+0};
		354	});
		355	$EXT_CORO{$coro+0} = $coro;
		356
		357	$coro
		358	}
		359
		360	sub write_runtime {
		361	$TICK_WATCHER->is_active or cf::cleanup "mainloop frozen but runtime active", 1;
		362
		363	my $runtime = cf::localdir . "/runtime";
		364
		365	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		366	or return;
		367
		368	my $value = $cf::RUNTIME + 90 + 10;
		369	# 10 is the runtime save interval, for a monotonic clock
		370	# 60 allows for the watchdog to kill the server.
		371
		372	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		373	and return;
		374
		375	# always fsync - this file is important
		376	aio_fsync $fh
		377	and return;
		378
		379	close $fh
		380	or return;
		381
		382	aio_rename "$runtime~", $runtime
		383	and return;
		384
		385	1
144	}	386	}
145		387
146	=back	388	=back
147		389
148	=cut	390	=cut
…		…
269	exception.	511	exception.
270		512
271	=cut	513	=cut
272		514
273	# the following variables are defined in .xs and must not be re-created	515	# the following variables are defined in .xs and must not be re-created
274	our @CB_GLOBAL = (); # registry for all global events	516	our @CB_GLOBAL = (); # registry for all global events
		517	our @CB_ATTACHABLE = (); # registry for all attachables
275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	518	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
276	our @CB_PLAYER = ();	519	our @CB_PLAYER = ();
277	our @CB_CLIENT = ();	520	our @CB_CLIENT = ();
278	our @CB_TYPE = (); # registry for type (cf-object class) based events	521	our @CB_TYPE = (); # registry for type (cf-object class) based events
279	our @CB_MAP = ();	522	our @CB_MAP = ();
280		523
281	my %attachment;	524	my %attachment;
		525
		526	sub cf::attachable::thawer_merge {
		527	# simply override everything except _meta
		528	local $_[0]{_meta};
		529	%{$_[0]} = %{$_[1]};
		530	}
282		531
283	sub _attach_cb($$$$) {	532	sub _attach_cb($$$$) {
284	my ($registry, $event, $prio, $cb) = @_;	533	my ($registry, $event, $prio, $cb) = @_;
285		534
286	use sort 'stable';	535	use sort 'stable';
…		…
289		538
290	@{$registry->[$event]} = sort	539	@{$registry->[$event]} = sort
291	{ $a->[0] cmp $b->[0] }	540	{ $a->[0] cmp $b->[0] }
292	@{$registry->[$event] || []}, $cb;	541	@{$registry->[$event] || []}, $cb;
293	}	542	}
		543
		544	# hack
		545	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
294		546
295	# attach handles attaching event callbacks	547	# attach handles attaching event callbacks
296	# the only thing the caller has to do is pass the correct	548	# the only thing the caller has to do is pass the correct
297	# registry (== where the callback attaches to).	549	# registry (== where the callback attaches to).
298	sub _attach {	550	sub _attach {
…		…
300		552
301	my $object_type;	553	my $object_type;
302	my $prio = 0;	554	my $prio = 0;
303	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	555	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
304		556
		557	#TODO: get rid of this hack
		558	if ($attachable_klass{$klass}) {
		559	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		560	}
		561
305	while (@arg) {	562	while (@arg) {
306	my $type = shift @arg;	563	my $type = shift @arg;
307		564
308	if ($type eq "prio") {	565	if ($type eq "prio") {
309	$prio = shift @arg;	566	$prio = shift @arg;
…		…
384	my ($obj, $name) = @_;	641	my ($obj, $name) = @_;
385		642
386	exists $obj->{_attachment}{$name}	643	exists $obj->{_attachment}{$name}
387	}	644	}
388		645
389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	646	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
390	eval "#line " . __LINE__ . " 'cf.pm'	647	eval "#line " . __LINE__ . " 'cf.pm'
391	sub cf::\L$klass\E::_attach_registry {	648	sub cf::\L$klass\E::_attach_registry {
392	(\\\@CB_$klass, KLASS_$klass)	649	(\\\@CB_$klass, KLASS_$klass)
393	}	650	}
394		651
…		…
447	=cut	704	=cut
448		705
449	#############################################################################	706	#############################################################################
450	# object support	707	# object support
451		708
452	sub instantiate {
453	my ($obj, $data) = @_;
454
455	$data = from_json $data;
456
457	for (@$data) {
458	my ($name, $args) = @$_;
459
460	$obj->attach ($name, %{$args || {} });
461	}
462	}
463
464	# basically do the same as instantiate, without calling instantiate
465	sub reattach {	709	sub reattach {
		710	# basically do the same as instantiate, without calling instantiate
466	my ($obj) = @_;	711	my ($obj) = @_;
		712
		713	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		714
467	my $registry = $obj->registry;	715	my $registry = $obj->registry;
468		716
469	@$registry = ();	717	@$registry = ();
470		718
471	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	719	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
480	warn "object uses attachment '$name' that is not available, postponing.\n";	728	warn "object uses attachment '$name' that is not available, postponing.\n";
481	}	729	}
482	}	730	}
483	}	731	}
484		732
485	sub object_freezer_save {	733	cf::attachable->attach (
486	my ($filename, $rdata, $objs) = @_;
487
488	if (length $$rdata) {
489	warn sprintf "saving %s (%d,%d)\n",
490	$filename, length $$rdata, scalar @$objs;
491
492	if (open my $fh, ">:raw", "$filename~") {
493	chmod SAVE_MODE, $fh;
494	syswrite $fh, $$rdata;
495	close $fh;
496
497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
498	chmod SAVE_MODE, $fh;
499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
500	close $fh;
501	rename "$filename.pst~", "$filename.pst";
502	} else {
503	unlink "$filename.pst";
504	}
505
506	rename "$filename~", $filename;
507	} else {
508	warn "FATAL: $filename~: $!\n";
509	}
510	} else {
511	unlink $filename;
512	unlink "$filename.pst";
513	}
514	}
515
516	sub object_freezer_as_string {
517	my ($rdata, $objs) = @_;
518
519	use Data::Dumper;
520
521	$$rdata . Dumper $objs
522	}
523
524	sub object_thawer_load {
525	my ($filename) = @_;
526
527	local $/;
528
529	my $av;
530
531	#TODO: use sysread etc.
532	if (open my $data, "<:raw:perlio", $filename) {
533	$data = <$data>;
534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
535	$av = eval { (Storable::thaw <$pst>)->{objs} };
536	}
537	return ($data, $av);
538	}
539
540	()
541	}
542
543	cf::object->attach (
544	prio => -1000000,	734	prio => -1000000,
		735	on_instantiate => sub {
		736	my ($obj, $data) = @_;
		737
		738	$data = from_json $data;
		739
		740	for (@$data) {
		741	my ($name, $args) = @$_;
		742
		743	$obj->attach ($name, %{$args || {} });
		744	}
		745	},
		746	on_reattach => \&reattach,
545	on_clone => sub {	747	on_clone => sub {
546	my ($src, $dst) = @_;	748	my ($src, $dst) = @_;
547		749
548	@{$dst->registry} = @{$src->registry};	750	@{$dst->registry} = @{$src->registry};
549		751
…		…
552	%{$dst->{_attachment}} = %{$src->{_attachment}}	754	%{$dst->{_attachment}} = %{$src->{_attachment}}
553	if exists $src->{_attachment};	755	if exists $src->{_attachment};
554	},	756	},
555	);	757	);
556		758
		759	sub object_freezer_save {
		760	my ($filename, $rdata, $objs) = @_;
		761
		762	sync_job {
		763	if (length $$rdata) {
		764	warn sprintf "saving %s (%d,%d)\n",
		765	$filename, length $$rdata, scalar @$objs;
		766
		767	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		768	chmod SAVE_MODE, $fh;
		769	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		770	aio_fsync $fh if $cf::USE_FSYNC;
		771	close $fh;
		772
		773	if (@$objs) {
		774	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		775	chmod SAVE_MODE, $fh;
		776	my $data = Storable::nfreeze { version => 1, objs => $objs };
		777	aio_write $fh, 0, (length $data), $data, 0;
		778	aio_fsync $fh if $cf::USE_FSYNC;
		779	close $fh;
		780	aio_rename "$filename.pst~", "$filename.pst";
		781	}
		782	} else {
		783	aio_unlink "$filename.pst";
		784	}
		785
		786	aio_rename "$filename~", $filename;
		787	} else {
		788	warn "FATAL: $filename~: $!\n";
		789	}
		790	} else {
		791	aio_unlink $filename;
		792	aio_unlink "$filename.pst";
		793	}
		794
		795	#d##TODO# nuke non .map-files if exist
		796	if ($filename =~ s/\.map$//) {
		797	aio_unlink $filename;
		798	aio_unlink "$filename.pst";
		799	}
		800	}
		801	}
		802
		803	sub object_freezer_as_string {
		804	my ($rdata, $objs) = @_;
		805
		806	use Data::Dumper;
		807
		808	$$rdata . Dumper $objs
		809	}
		810
		811	sub object_thawer_load {
		812	my ($filename) = @_;
		813
		814	my ($data, $av);
		815
		816	#d#TODO remove .map if file does not exist
		817	aio_stat $filename and $filename =~ s/\.map$//;
		818
		819	(aio_load $filename, $data) >= 0
		820	or return;
		821
		822	unless (aio_stat "$filename.pst") {
		823	(aio_load "$filename.pst", $av) >= 0
		824	or return;
		825	$av = eval { (Storable::thaw $av)->{objs} };
		826	}
		827
		828	warn sprintf "loading %s (%d)\n",
		829	$filename, length $data, scalar @{$av || []};#d#
		830	return ($data, $av);
		831	}
		832
557	#############################################################################	833	#############################################################################
558	# command handling &c	834	# command handling &c
559		835
560	=item cf::register_command $name => \&callback($ob,$args);	836	=item cf::register_command $name => \&callback($ob,$args);
561		837
…		…
583	=cut	859	=cut
584		860
585	sub register_extcmd {	861	sub register_extcmd {
586	my ($name, $cb) = @_;	862	my ($name, $cb) = @_;
587		863
588	my $caller = caller;
589	#warn "registering extcmd '$name' to '$caller'";
590
591	$EXTCMD{$name} = [$cb, $caller];	864	$EXTCMD{$name} = $cb;
592	}	865	}
593		866
594	cf::player->attach (	867	cf::player->attach (
595	on_command => sub {	868	on_command => sub {
596	my ($pl, $name, $params) = @_;	869	my ($pl, $name, $params) = @_;
…		…
609		882
610	my $msg = eval { from_json $buf };	883	my $msg = eval { from_json $buf };
611		884
612	if (ref $msg) {	885	if (ref $msg) {
613	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	886	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
614	if (my %reply = $cb->[0]->($pl, $msg)) {	887	if (my %reply = $cb->($pl, $msg)) {
615	$pl->ext_reply ($msg->{msgid}, %reply);	888	$pl->ext_reply ($msg->{msgid}, %reply);
616	}	889	}
617	}	890	}
618	} else {	891	} else {
619	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	892	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
621		894
622	cf::override;	895	cf::override;
623	},	896	},
624	);	897	);
625		898
626	sub register {
627	my ($base, $pkg) = @_;
628
629	#TODO
630	}
631
632	sub load_extension {	899	sub load_extension {
633	my ($path) = @_;	900	my ($path) = @_;
634		901
635	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	902	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
636	my $base = $1;	903	my $base = $1;
637	my $pkg = $1;	904	my $pkg = $1;
638	$pkg =~ s/[^[:word:]]/_/g;	905	$pkg =~ s/[^[:word:]]/_/g;
639	$pkg = "ext::$pkg";	906	$pkg = "ext::$pkg";
640		907
641	warn "loading '$path' into '$pkg'\n";	908	warn "... loading '$path' into '$pkg'\n";
642		909
643	open my $fh, "<:utf8", $path	910	open my $fh, "<:utf8", $path
644	or die "$path: $!";	911	or die "$path: $!";
645		912
646	my $source =	913	my $source =
647	"package $pkg; use strict; use utf8;\n"	914	"package $pkg; use strict; use utf8;\n"
648	. "#line 1 \"$path\"\n{\n"	915	. "#line 1 \"$path\"\n{\n"
649	. (do { local $/; <$fh> })	916	. (do { local $/; <$fh> })
650	. "\n};\n1";	917	. "\n};\n1";
651		918
652	eval $source	919	unless (eval $source) {
653	or die $@ ? "$path: $@\n"	920	my $msg = $@ ? "$path: $@\n"
654	: "extension disabled.\n";	921	: "extension disabled.\n";
655		922	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
656	push @exts, $pkg;	923	warn $@;
657	$ext_pkg{$base} = $pkg;	924	warn "mandatory extension failed to load, exiting.\n";
658		925	exit 1;
659	# no strict 'refs';	926	}
660	# @{"$pkg\::ISA"} = ext::;	927	die $@;
661
662	register $base, $pkg;
663	}
664
665	sub unload_extension {
666	my ($pkg) = @_;
667
668	warn "removing extension $pkg\n";
669
670	# remove hooks
671	#TODO
672	# for my $idx (0 .. $#PLUGIN_EVENT) {
673	# delete $hook[$idx]{$pkg};
674	# }	928	}
675		929
676	# remove commands	930	push @EXTS, $pkg;
677	for my $name (keys %COMMAND) {
678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
679
680	if (@cb) {
681	$COMMAND{$name} = \@cb;
682	} else {
683	delete $COMMAND{$name};
684	}
685	}
686
687	# remove extcmds
688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
689	delete $EXTCMD{$name};
690	}
691
692	if (my $cb = $pkg->can ("unload")) {
693	eval {
694	$cb->($pkg);
695	1
696	} or warn "$pkg unloaded, but with errors: $@";
697	}
698
699	Symbol::delete_package $pkg;
700	}	931	}
701		932
702	sub load_extensions {	933	sub load_extensions {
703	for my $ext (<$LIBDIR/*.ext>) {	934	for my $ext (<$LIBDIR/*.ext>) {
704	next unless -r $ext;	935	next unless -r $ext;
…		…
708	} or warn "$ext not loaded: $@";	939	} or warn "$ext not loaded: $@";
709	}	940	}
710	}	941	}
711		942
712	#############################################################################	943	#############################################################################
713	# load/save/clean perl data associated with a map
714		944
715	*cf::mapsupport::on_clean = sub {	945	=head2 CORE EXTENSIONS
		946
		947	Functions and methods that extend core crossfire objects.
		948
		949	=cut
		950
		951	package cf::player;
		952
		953	use Coro::AIO;
		954
		955	=head3 cf::player
		956
		957	=over 4
		958
		959	=item cf::player::find $login
		960
		961	Returns the given player object, loading it if necessary (might block).
		962
		963	=cut
		964
		965	sub playerdir($) {
		966	cf::localdir
		967	. "/"
		968	. cf::playerdir
		969	. "/"
		970	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		971	}
		972
		973	sub path($) {
		974	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		975
		976	(playerdir $login) . "/$login.pl"
		977	}
		978
		979	sub find_active($) {
		980	$cf::PLAYER{$_[0]}
		981	and $cf::PLAYER{$_[0]}->active
		982	and $cf::PLAYER{$_[0]}
		983	}
		984
		985	sub exists($) {
		986	my ($login) = @_;
		987
		988	$cf::PLAYER{$login}
		989	or cf::sync_job { !aio_stat path $login }
		990	}
		991
		992	sub find($) {
		993	return $cf::PLAYER{$_[0]} || do {
		994	my $login = $_[0];
		995
		996	my $guard = cf::lock_acquire "user_find:$login";
		997
		998	$cf::PLAYER{$_[0]} || do {
		999	my $pl = load_pl path $login
		1000	or return;
		1001	$cf::PLAYER{$login} = $pl
		1002	}
		1003	}
		1004	}
		1005
		1006	sub save($) {
		1007	my ($pl) = @_;
		1008
		1009	return if $pl->{deny_save};
		1010
		1011	my $path = path $pl;
		1012	my $guard = cf::lock_acquire "user_save:$path";
		1013
		1014	return if $pl->{deny_save};
		1015
		1016	aio_mkdir playerdir $pl, 0770;
		1017	$pl->{last_save} = $cf::RUNTIME;
		1018
		1019	$pl->save_pl ($path);
		1020	Coro::cede;
		1021	}
		1022
		1023	sub new($) {
		1024	my ($login) = @_;
		1025
		1026	my $self = create;
		1027
		1028	$self->ob->name ($login);
		1029	$self->{deny_save} = 1;
		1030
		1031	$cf::PLAYER{$login} = $self;
		1032
		1033	$self
		1034	}
		1035
		1036	=item $pl->quit_character
		1037
		1038	Nukes the player without looking back. If logged in, the connection will
		1039	be destroyed. May block for a long time.
		1040
		1041	=cut
		1042
		1043	sub quit_character {
		1044	my ($pl) = @_;
		1045
		1046	$pl->{deny_save} = 1;
		1047	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1048
		1049	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1050	$pl->deactivate;
		1051	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1052	$pl->ns->destroy if $pl->ns;
		1053
		1054	my $path = playerdir $pl;
		1055	my $temp = "$path~$cf::RUNTIME~deleting~";
		1056	aio_rename $path, $temp;
		1057	delete $cf::PLAYER{$pl->ob->name};
		1058	$pl->destroy;
		1059	IO::AIO::aio_rmtree $temp;
		1060	}
		1061
		1062	=item cf::player::list_logins
		1063
		1064	Returns am arrayref of all valid playernames in the system, can take a
		1065	while and may block, so not sync_job-capable, ever.
		1066
		1067	=cut
		1068
		1069	sub list_logins {
		1070	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1071	or return [];
		1072
		1073	my @logins;
		1074
		1075	for my $login (@$dirs) {
		1076	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1077	aio_read $fh, 0, 512, my $buf, 0 or next;
		1078	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1079
		1080	utf8::decode $login;
		1081	push @logins, $login;
		1082	}
		1083
		1084	\@logins
		1085	}
		1086
		1087	=item $player->maps
		1088
		1089	Returns an arrayref of map paths that are private for this
		1090	player. May block.
		1091
		1092	=cut
		1093
		1094	sub maps($) {
		1095	my ($pl) = @_;
		1096
		1097	$pl = ref $pl ? $pl->ob->name : $pl;
		1098
		1099	my $files = aio_readdir playerdir $pl
		1100	or return;
		1101
		1102	my @paths;
		1103
		1104	for (@$files) {
		1105	utf8::decode $_;
		1106	next if /\.(?:pl|pst)$/;
		1107	next unless /^$PATH_SEP/o;
		1108
		1109	push @paths, cf::map::normalise "~$pl/$_";
		1110	}
		1111
		1112	\@paths
		1113	}
		1114
		1115	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1116
		1117	Sends an ext reply to the player.
		1118
		1119	=cut
		1120
		1121	sub ext_reply($$$%) {
		1122	my ($self, $id, %msg) = @_;
		1123
		1124	$msg{msgid} = $id;
		1125
		1126	$self->send ("ext " . cf::to_json \%msg);
		1127	}
		1128
		1129	package cf;
		1130
		1131	=back
		1132
		1133
		1134	=head3 cf::map
		1135
		1136	=over 4
		1137
		1138	=cut
		1139
		1140	package cf::map;
		1141
		1142	use Fcntl;
		1143	use Coro::AIO;
		1144
		1145	use overload
		1146	'""' => \&as_string,
		1147	fallback => 1;
		1148
		1149	our $MAX_RESET = 3600;
		1150	our $DEFAULT_RESET = 3000;
		1151
		1152	sub generate_random_map {
		1153	my ($self, $rmp) = @_;
		1154	# mit "rum" bekleckern, nicht
		1155	$self->_create_random_map (
		1156	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1157	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1158	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1159	$rmp->{exit_on_final_map},
		1160	$rmp->{xsize}, $rmp->{ysize},
		1161	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1162	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1163	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1164	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1165	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1166	(cf::region::find $rmp->{region}), $rmp->{custom}
		1167	)
		1168	}
		1169
		1170	=item cf::map->register ($regex, $prio)
		1171
		1172	Register a handler for the map path matching the given regex at the
		1173	givne priority (higher is better, built-in handlers have priority 0, the
		1174	default).
		1175
		1176	=cut
		1177
		1178	sub register {
		1179	my (undef, $regex, $prio) = @_;
		1180	my $pkg = caller;
		1181
		1182	no strict;
		1183	push @{"$pkg\::ISA"}, __PACKAGE__;
		1184
		1185	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1186	}
		1187
		1188	# also paths starting with '/'
		1189	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1190
		1191	sub thawer_merge {
		1192	my ($self, $merge) = @_;
		1193
		1194	# we have to keep some variables in memory intact
		1195	local $self->{path};
		1196	local $self->{load_path};
		1197	local $self->{deny_save};
		1198	local $self->{deny_reset};
		1199
		1200	$self->SUPER::thawer_merge ($merge);
		1201	}
		1202
		1203	sub normalise {
		1204	my ($path, $base) = @_;
		1205
		1206	$path = "$path"; # make sure its a string
		1207
		1208	$path =~ s/\.map$//;
		1209
		1210	# map plan:
		1211	#
		1212	# /! non-realised random map exit (special hack!)
		1213	# {... are special paths that are not being touched
		1214	# ?xxx/... are special absolute paths
		1215	# ?random/... random maps
		1216	# /... normal maps
		1217	# ~user/... per-player map of a specific user
		1218
		1219	$path =~ s/$PATH_SEP/\//go;
		1220
		1221	# treat it as relative path if it starts with
		1222	# something that looks reasonable
		1223	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1224	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1225
		1226	$base =~ s{[^/]+/?$}{};
		1227	$path = "$base/$path";
		1228	}
		1229
		1230	for ($path) {
		1231	redo if s{//}{/};
		1232	redo if s{/\.?/}{/};
		1233	redo if s{/[^/]+/\.\./}{/};
		1234	}
		1235
		1236	$path
		1237	}
		1238
		1239	sub new_from_path {
		1240	my (undef, $path, $base) = @_;
		1241
		1242	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1243
		1244	$path = normalise $path, $base;
		1245
		1246	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1247	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1248	my $self = bless cf::map::new, $pkg;
		1249	$self->{path} = $path; $self->path ($path);
		1250	$self->init; # pass $1 etc.
		1251	return $self;
		1252	}
		1253	}
		1254
		1255	Carp::carp "unable to resolve path '$path' (base '$base').";
		1256	()
		1257	}
		1258
		1259	sub init {
		1260	my ($self) = @_;
		1261
		1262	$self
		1263	}
		1264
		1265	sub as_string {
		1266	my ($self) = @_;
		1267
		1268	"$self->{path}"
		1269	}
		1270
		1271	# the displayed name, this is a one way mapping
		1272	sub visible_name {
		1273	&as_string
		1274	}
		1275
		1276	# the original (read-only) location
		1277	sub load_path {
		1278	my ($self) = @_;
		1279
		1280	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1281	}
		1282
		1283	# the temporary/swap location
		1284	sub save_path {
		1285	my ($self) = @_;
		1286
		1287	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1288	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1289	}
		1290
		1291	# the unique path, undef == no special unique path
		1292	sub uniq_path {
		1293	my ($self) = @_;
		1294
		1295	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1296	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1297	}
		1298
		1299	# and all this just because we cannot iterate over
		1300	# all maps in C++...
		1301	sub change_all_map_light {
		1302	my ($change) = @_;
		1303
		1304	$_->change_map_light ($change)
		1305	for grep $_->outdoor, values %cf::MAP;
		1306	}
		1307
		1308	sub unlink_save {
		1309	my ($self) = @_;
		1310
		1311	utf8::encode (my $save = $self->save_path);
		1312	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1313	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1314
		1315	#d#TODO remove .map and also nuke
		1316	$save =~ s/\.map// or return;#d#
		1317	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1318	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1319	}
		1320
		1321	sub load_header_from($) {
		1322	my ($self, $path) = @_;
		1323
		1324	utf8::encode $path;
		1325	#aio_open $path, O_RDONLY, 0
		1326	# or return;
		1327
		1328	$self->_load_header ($path)
		1329	or return;
		1330
		1331	$self->{load_path} = $path;
		1332
		1333	1
		1334	}
		1335
		1336	sub load_header_orig {
		1337	my ($self) = @_;
		1338
		1339	$self->load_header_from ($self->load_path)
		1340	}
		1341
		1342	sub load_header_temp {
		1343	my ($self) = @_;
		1344
		1345	$self->load_header_from ($self->save_path)
		1346	}
		1347
		1348	sub prepare_temp {
		1349	my ($self) = @_;
		1350
		1351	$self->last_access ((delete $self->{last_access})
		1352	|| $cf::RUNTIME); #d#
		1353	# safety
		1354	$self->{instantiate_time} = $cf::RUNTIME
		1355	if $self->{instantiate_time} > $cf::RUNTIME;
		1356	}
		1357
		1358	sub prepare_orig {
		1359	my ($self) = @_;
		1360
		1361	$self->{load_original} = 1;
		1362	$self->{instantiate_time} = $cf::RUNTIME;
		1363	$self->last_access ($cf::RUNTIME);
		1364	$self->instantiate;
		1365	}
		1366
		1367	sub load_header {
		1368	my ($self) = @_;
		1369
		1370	if ($self->load_header_temp) {
		1371	$self->prepare_temp;
		1372	} else {
		1373	$self->load_header_orig
		1374	or return;
		1375	$self->prepare_orig;
		1376	}
		1377
		1378	1
		1379	}
		1380
		1381	sub find;
		1382	sub find {
		1383	my ($path, $origin) = @_;
		1384
		1385	$path = normalise $path, $origin && $origin->path;
		1386
		1387	cf::lock_wait "map_find:$path";
		1388
		1389	$cf::MAP{$path} || do {
		1390	my $guard = cf::lock_acquire "map_find:$path";
		1391	my $map = new_from_path cf::map $path
		1392	or return;
		1393
		1394	$map->{last_save} = $cf::RUNTIME;
		1395
		1396	$map->load_header
		1397	or return;
		1398
		1399	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1400	# doing this can freeze the server in a sync job, obviously
		1401	#$cf::WAIT_FOR_TICK->wait;
		1402	$map->reset;
		1403	undef $guard;
		1404	return find $path;
		1405	}
		1406
		1407	$cf::MAP{$path} = $map
		1408	}
		1409	}
		1410
		1411	sub pre_load { }
		1412	sub post_load { }
		1413
		1414	sub load {
		1415	my ($self) = @_;
		1416
		1417	local $self->{deny_reset} = 1; # loading can take a long time
		1418
		1419	my $path = $self->{path};
		1420	my $guard = cf::lock_acquire "map_load:$path";
		1421
		1422	return if $self->in_memory != cf::MAP_SWAPPED;
		1423
		1424	$self->in_memory (cf::MAP_LOADING);
		1425
		1426	$self->alloc;
		1427
		1428	$self->pre_load;
		1429
		1430	$self->_load_objects ($self->{load_path}, 1)
		1431	or return;
		1432
		1433	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1434	if delete $self->{load_original};
		1435
		1436	if (my $uniq = $self->uniq_path) {
		1437	utf8::encode $uniq;
		1438	if (aio_open $uniq, O_RDONLY, 0) {
		1439	$self->clear_unique_items;
		1440	$self->_load_objects ($uniq, 0);
		1441	}
		1442	}
		1443
		1444	Coro::cede;
		1445
		1446	# now do the right thing for maps
		1447	$self->link_multipart_objects;
		1448
		1449	unless ($self->{deny_activate}) {
		1450	$self->decay_objects;
		1451	$self->fix_auto_apply;
		1452	$self->update_buttons;
		1453	Coro::cede;
		1454	$self->set_darkness_map;
		1455	$self->difficulty ($self->estimate_difficulty)
		1456	unless $self->difficulty;
		1457	Coro::cede;
		1458	$self->activate;
		1459	}
		1460
		1461	$self->post_load;
		1462
		1463	$self->in_memory (cf::MAP_IN_MEMORY);
		1464	}
		1465
		1466	sub customise_for {
		1467	my ($self, $ob) = @_;
		1468
		1469	return find "~" . $ob->name . "/" . $self->{path}
		1470	if $self->per_player;
		1471
		1472	$self
		1473	}
		1474
		1475	# find and load all maps in the 3x3 area around a map
		1476	sub load_diag {
716	my ($map) = @_;	1477	my ($map) = @_;
717		1478
718	my $path = $map->tmpname;	1479	my @diag; # diagonal neighbours
719	defined $path or return;
720		1480
721	unlink "$path.pst";	1481	for (0 .. 3) {
722	};	1482	my $neigh = $map->tile_path ($_)
		1483	or next;
		1484	$neigh = find $neigh, $map
		1485	or next;
		1486	$neigh->load;
723		1487
724	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1488	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1489	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1490	}
725		1491
726	#############################################################################	1492	for (@diag) {
727	# load/save perl data associated with player->ob objects	1493	my $neigh = find @$_
728		1494	or next;
729	sub all_objects(@) {	1495	$neigh->load;
730	@_, map all_objects ($_->inv), @_	1496	}
731	}	1497	}
732		1498
733	# TODO: compatibility cruft, remove when no longer needed	1499	sub find_sync {
734	cf::player->attach (	1500	my ($path, $origin) = @_;
735	on_load => sub {
736	my ($pl, $path) = @_;
737		1501
738	for my $o (all_objects $pl->ob) {	1502	cf::sync_job { find $path, $origin }
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1503	}
740	$o->set_ob_key_value ("_perl_data");
741		1504
742	%$o = %{ Storable::thaw pack "H*", $value };	1505	sub do_load_sync {
		1506	my ($map) = @_;
		1507
		1508	cf::sync_job { $map->load };
		1509	}
		1510
		1511	our %MAP_PREFETCH;
		1512	our $MAP_PREFETCHER = undef;
		1513
		1514	sub find_async {
		1515	my ($path, $origin) = @_;
		1516
		1517	$path = normalise $path, $origin && $origin->{path};
		1518
		1519	if (my $map = $cf::MAP{$path}) {
		1520	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1521	}
		1522
		1523	undef $MAP_PREFETCH{$path};
		1524	$MAP_PREFETCHER ||= cf::async {
		1525	while (%MAP_PREFETCH) {
		1526	for my $path (keys %MAP_PREFETCH) {
		1527	my $map = find $path
		1528	or next;
		1529	$map->load;
		1530
		1531	delete $MAP_PREFETCH{$path};
743	}	1532	}
744	}	1533	}
		1534	undef $MAP_PREFETCHER;
		1535	};
		1536	$MAP_PREFETCHER->prio (6);
		1537
		1538	()
		1539	}
		1540
		1541	sub save {
		1542	my ($self) = @_;
		1543
		1544	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1545
		1546	$self->{last_save} = $cf::RUNTIME;
		1547
		1548	return unless $self->dirty;
		1549
		1550	my $save = $self->save_path; utf8::encode $save;
		1551	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1552
		1553	$self->{load_path} = $save;
		1554
		1555	return if $self->{deny_save};
		1556
		1557	local $self->{last_access} = $self->last_access;#d#
		1558
		1559	cf::async {
		1560	$_->contr->save for $self->players;
		1561	};
		1562
		1563	if ($uniq) {
		1564	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1565	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1566	} else {
		1567	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
745	},	1568	}
746	);	1569	}
747		1570
748	#############################################################################	1571	sub swap_out {
		1572	my ($self) = @_;
749		1573
750	=head2 CORE EXTENSIONS	1574	# save first because save cedes
		1575	$self->save;
751		1576
752	Functions and methods that extend core crossfire objects.	1577	my $lock = cf::lock_acquire "map_data:" . $self->path;
753		1578
754	=head3 cf::player	1579	return if $self->players;
		1580	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1581	return if $self->{deny_save};
		1582
		1583	$self->clear;
		1584	$self->in_memory (cf::MAP_SWAPPED);
		1585	}
		1586
		1587	sub reset_at {
		1588	my ($self) = @_;
		1589
		1590	# TODO: safety, remove and allow resettable per-player maps
		1591	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1592	return 1e99 if $self->{deny_reset};
		1593
		1594	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1595	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1596
		1597	$time + $to
		1598	}
		1599
		1600	sub should_reset {
		1601	my ($self) = @_;
		1602
		1603	$self->reset_at <= $cf::RUNTIME
		1604	}
		1605
		1606	sub reset {
		1607	my ($self) = @_;
		1608
		1609	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1610
		1611	return if $self->players;
		1612	return if $self->isa ("ext::map_per_player");#d#
		1613
		1614	warn "resetting map ", $self->path;#d#
		1615
		1616	$self->in_memory (cf::MAP_SWAPPED);
		1617
		1618	# need to save uniques path
		1619	unless ($self->{deny_save}) {
		1620	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1621
		1622	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1623	if $uniq;
		1624	}
		1625
		1626	delete $cf::MAP{$self->path};
		1627
		1628	$self->clear;
		1629
		1630	$_->clear_links_to ($self) for values %cf::MAP;
		1631
		1632	$self->unlink_save;
		1633	$self->destroy;
		1634	}
		1635
		1636	my $nuke_counter = "aaaa";
		1637
		1638	sub nuke {
		1639	my ($self) = @_;
		1640
		1641	delete $cf::MAP{$self->path};
		1642
		1643	$self->unlink_save;
		1644
		1645	bless $self, "cf::map";
		1646	delete $self->{deny_reset};
		1647	$self->{deny_save} = 1;
		1648	$self->reset_timeout (1);
		1649	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1650
		1651	$cf::MAP{$self->path} = $self;
		1652
		1653	$self->reset; # polite request, might not happen
		1654	}
		1655
		1656	=item cf::map::unique_maps
		1657
		1658	Returns an arrayref of paths of all shared maps that have
		1659	instantiated unique items. May block.
		1660
		1661	=cut
		1662
		1663	sub unique_maps() {
		1664	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1665	or return;
		1666
		1667	my @paths;
		1668
		1669	for (@$files) {
		1670	utf8::decode $_;
		1671	next if /\.pst$/;
		1672	next unless /^$PATH_SEP/o;
		1673
		1674	push @paths, cf::map::normalise $_;
		1675	}
		1676
		1677	\@paths
		1678	}
		1679
		1680	package cf;
		1681
		1682	=back
		1683
		1684	=head3 cf::object
		1685
		1686	=cut
		1687
		1688	package cf::object;
755		1689
756	=over 4	1690	=over 4
757		1691
758	=item cf::player::exists $login	1692	=item $ob->inv_recursive
759		1693
760	Returns true when the given account exists.	1694	Returns the inventory of the object _and_ their inventories, recursively.
761		1695
762	=cut	1696	=cut
763		1697
764	sub cf::player::exists($) {	1698	sub inv_recursive_;
765	cf::player::find $_[0]	1699	sub inv_recursive_ {
766	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1700	map { $_, inv_recursive_ $_->inv } @_
767	}	1701	}
768		1702
769	=item $player->ext_reply ($msgid, $msgtype, %msg)	1703	sub inv_recursive {
770		1704	inv_recursive_ inv $_[0]
771	Sends an ext reply to the player.
772
773	=cut
774
775	sub cf::player::ext_reply($$$%) {
776	my ($self, $id, %msg) = @_;
777
778	$msg{msgid} = $id;
779
780	$self->send ("ext " . to_json \%msg);
781	}	1705	}
		1706
		1707	package cf;
782		1708
783	=back	1709	=back
784		1710
785	=head3 cf::object::player	1711	=head3 cf::object::player
786		1712
…		…
824	(ref $cf::CFG{"may_$access"}	1750	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1751	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1752	: $cf::CFG{"may_$access"})
827	}	1753	}
828		1754
		1755	=item $player_object->enter_link
		1756
		1757	Freezes the player and moves him/her to a special map (C<{link}>).
		1758
		1759	The player should be reasonably safe there for short amounts of time. You
		1760	I<MUST> call C<leave_link> as soon as possible, though.
		1761
		1762	Will never block.
		1763
		1764	=item $player_object->leave_link ($map, $x, $y)
		1765
		1766	Moves the player out of the special C<{link}> map onto the specified
		1767	map. If the map is not valid (or omitted), the player will be moved back
		1768	to the location he/she was before the call to C<enter_link>, or, if that
		1769	fails, to the emergency map position.
		1770
		1771	Might block.
		1772
		1773	=cut
		1774
		1775	sub link_map {
		1776	unless ($LINK_MAP) {
		1777	$LINK_MAP = cf::map::find "{link}"
		1778	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1779	$LINK_MAP->load;
		1780	}
		1781
		1782	$LINK_MAP
		1783	}
		1784
		1785	sub cf::object::player::enter_link {
		1786	my ($self) = @_;
		1787
		1788	$self->deactivate_recursive;
		1789
		1790	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1791
		1792	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1793	if $self->map;
		1794
		1795	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1796	}
		1797
		1798	sub cf::object::player::leave_link {
		1799	my ($self, $map, $x, $y) = @_;
		1800
		1801	my $link_pos = delete $self->{_link_pos};
		1802
		1803	unless ($map) {
		1804	# restore original map position
		1805	($map, $x, $y) = @{ $link_pos || [] };
		1806	$map = cf::map::find $map;
		1807
		1808	unless ($map) {
		1809	($map, $x, $y) = @$EMERGENCY_POSITION;
		1810	$map = cf::map::find $map
		1811	or die "FATAL: cannot load emergency map\n";
		1812	}
		1813	}
		1814
		1815	($x, $y) = (-1, -1)
		1816	unless (defined $x) && (defined $y);
		1817
		1818	# use -1 or undef as default coordinates, not 0, 0
		1819	($x, $y) = ($map->enter_x, $map->enter_y)
		1820	if $x <=0 && $y <= 0;
		1821
		1822	$map->load;
		1823	$map->load_diag;
		1824
		1825	return unless $self->contr->active;
		1826	$self->activate_recursive;
		1827	$self->enter_map ($map, $x, $y);
		1828	}
		1829
		1830	cf::player->attach (
		1831	on_logout => sub {
		1832	my ($pl) = @_;
		1833
		1834	# abort map switching before logout
		1835	if ($pl->ob->{_link_pos}) {
		1836	cf::sync_job {
		1837	$pl->ob->leave_link
		1838	};
		1839	}
		1840	},
		1841	on_login => sub {
		1842	my ($pl) = @_;
		1843
		1844	# try to abort aborted map switching on player login :)
		1845	# should happen only on crashes
		1846	if ($pl->ob->{_link_pos}) {
		1847	$pl->ob->enter_link;
		1848	(async {
		1849	# we need this sleep as the login has a concurrent enter_exit running
		1850	# and this sleep increases chances of the player not ending up in scorn
		1851	$pl->ob->reply (undef,
		1852	"There was an internal problem at your last logout, "
		1853	. "the server will try to bring you to your intended destination in a second.",
		1854	cf::NDI_RED);
		1855	Coro::Timer::sleep 1;
		1856	$pl->ob->leave_link;
		1857	})->prio (2);
		1858	}
		1859	},
		1860	);
		1861
		1862	=item $player_object->goto ($path, $x, $y)
		1863
		1864	=cut
		1865
		1866	sub cf::object::player::goto {
		1867	my ($self, $path, $x, $y) = @_;
		1868
		1869	$self->enter_link;
		1870
		1871	(async {
		1872	my $map = eval {
		1873	my $map = cf::map::find $path;
		1874	$map = $map->customise_for ($self) if $map;
		1875	$map
		1876	} or
		1877	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1878
		1879	$self->leave_link ($map, $x, $y);
		1880	})->prio (1);
		1881	}
		1882
		1883	=item $player_object->enter_exit ($exit_object)
		1884
		1885	=cut
		1886
		1887	sub parse_random_map_params {
		1888	my ($spec) = @_;
		1889
		1890	my $rmp = { # defaults
		1891	xsize => (cf::rndm 15, 40),
		1892	ysize => (cf::rndm 15, 40),
		1893	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1894	#layout => string,
		1895	};
		1896
		1897	for (split /\n/, $spec) {
		1898	my ($k, $v) = split /\s+/, $_, 2;
		1899
		1900	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1901	}
		1902
		1903	$rmp
		1904	}
		1905
		1906	sub prepare_random_map {
		1907	my ($exit) = @_;
		1908
		1909	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1910
		1911	# all this does is basically replace the /! path by
		1912	# a new random map path (?random/...) with a seed
		1913	# that depends on the exit object
		1914
		1915	my $rmp = parse_random_map_params $exit->msg;
		1916
		1917	if ($exit->map) {
		1918	$rmp->{region} = $exit->region->name;
		1919	$rmp->{origin_map} = $exit->map->path;
		1920	$rmp->{origin_x} = $exit->x;
		1921	$rmp->{origin_y} = $exit->y;
		1922	}
		1923
		1924	$rmp->{random_seed} ||= $exit->random_seed;
		1925
		1926	my $data = cf::to_json $rmp;
		1927	my $md5 = Digest::MD5::md5_hex $data;
		1928	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1929
		1930	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1931	aio_write $fh, 0, (length $data), $data, 0;
		1932	undef $fh;
		1933	aio_rename "$meta~", $meta;
		1934
		1935	$exit->slaying ("?random/$md5");
		1936	$exit->msg (undef);
		1937	}
		1938	}
		1939
		1940	sub cf::object::player::enter_exit {
		1941	my ($self, $exit) = @_;
		1942
		1943	return unless $self->type == cf::PLAYER;
		1944
		1945	if ($exit->slaying eq "/!") {
		1946	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1947	cf::sync_job { prepare_random_map $exit };
		1948	}
		1949
		1950	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1951	my $hp = $exit->stats->hp;
		1952	my $sp = $exit->stats->sp;
		1953
		1954	$self->enter_link;
		1955
		1956	(async {
		1957	$self->deactivate_recursive; # just to be sure
		1958	unless (eval {
		1959	$self->goto ($slaying, $hp, $sp);
		1960
		1961	1;
		1962	}) {
		1963	$self->message ("Something went wrong deep within the crossfire server. "
		1964	. "I'll try to bring you back to the map you were before. "
		1965	. "Please report this to the dungeon master!",
		1966	cf::NDI_UNIQUE | cf::NDI_RED);
		1967
		1968	warn "ERROR in enter_exit: $@";
		1969	$self->leave_link;
		1970	}
		1971	})->prio (1);
		1972	}
		1973
829	=head3 cf::client	1974	=head3 cf::client
830		1975
831	=over 4	1976	=over 4
832		1977
833	=item $client->send_drawinfo ($text, $flags)	1978	=item $client->send_drawinfo ($text, $flags)
…		…
876	on_reply => sub {	2021	on_reply => sub {
877	my ($ns, $msg) = @_;	2022	my ($ns, $msg) = @_;
878		2023
879	# this weird shuffling is so that direct followup queries	2024	# this weird shuffling is so that direct followup queries
880	# get handled first	2025	# get handled first
881	my $queue = delete $ns->{query_queue};	2026	my $queue = delete $ns->{query_queue}
		2027	or return; # be conservative, not sure how that can happen, but we saw a crash here
882		2028
883	(shift @$queue)->[1]->($msg);	2029	(shift @$queue)->[1]->($msg);
		2030	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
884		2031
885	push @{ $ns->{query_queue} }, @$queue;	2032	push @{ $ns->{query_queue} }, @$queue;
886		2033
887	if (@{ $ns->{query_queue} } == @$queue) {	2034	if (@{ $ns->{query_queue} } == @$queue) {
888	if (@$queue) {	2035	if (@$queue) {
…		…
892	}	2039	}
893	}	2040	}
894	},	2041	},
895	);	2042	);
896		2043
897	=item $client->coro (\&cb)	2044	=item $client->async (\&cb)
898		2045
899	Create a new coroutine, running the specified callback. The coroutine will	2046	Create a new coroutine, running the specified callback. The coroutine will
900	be automatically cancelled when the client gets destroyed (e.g. on logout,	2047	be automatically cancelled when the client gets destroyed (e.g. on logout,
901	or loss of connection).	2048	or loss of connection).
902		2049
903	=cut	2050	=cut
904		2051
905	sub cf::client::coro {	2052	sub cf::client::async {
906	my ($self, $cb) = @_;	2053	my ($self, $cb) = @_;
907		2054
908	my $coro; $coro = async {	2055	my $coro = &Coro::async ($cb);
909	eval {	2056
910	$cb->();	2057	$coro->on_destroy (sub {
911	};
912	warn $@ if $@;
913	delete $self->{_coro}{$coro+0};	2058	delete $self->{_coro}{$coro+0};
914	};	2059	});
915		2060
916	$self->{_coro}{$coro+0} = $coro;	2061	$self->{_coro}{$coro+0} = $coro;
		2062
		2063	$coro
917	}	2064	}
918		2065
919	cf::client->attach (	2066	cf::client->attach (
920	on_destroy => sub {	2067	on_destroy => sub {
921	my ($ns) = @_;	2068	my ($ns) = @_;
…		…
1049	The parameter C<$family> should best start with the name of the extension	2196	The parameter C<$family> should best start with the name of the extension
1050	using it, it should be unique.	2197	using it, it should be unique.
1051		2198
1052	=over 4	2199	=over 4
1053		2200
1054	=item $hashref = cf::db_get $family
1055
1056	Return a hashref for use by the extension C<$family>, which can be
1057	modified. After modifications, you have to call C<cf::db_dirty> or
1058	C<cf::db_sync>.
1059
1060	=item $value = cf::db_get $family => $key	2201	=item $value = cf::db_get $family => $key
1061		2202
1062	Returns a single value from the database	2203	Returns a single value from the database.
1063
1064	=item cf::db_put $family => $hashref
1065
1066	Stores the given family hashref into the database. Updates are delayed, if
1067	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1068		2204
1069	=item cf::db_put $family => $key => $value	2205	=item cf::db_put $family => $key => $value
1070		2206
1071	Stores the given C<$value> in the family hash. Updates are delayed, if you	2207	Stores the given C<$value> in the family.
1072	want the data to be synced to disk immediately, use C<cf::db_sync>.
1073
1074	=item cf::db_dirty
1075
1076	Marks the database as dirty, to be updated at a later time.
1077
1078	=item cf::db_sync
1079
1080	Immediately write the database to disk I<if it is dirty>.
1081		2208
1082	=cut	2209	=cut
1083		2210
1084	our $DB;	2211	our $DB;
1085		2212
1086	{	2213	sub db_init {
		2214	unless ($DB) {
		2215	$DB = BDB::db_create $DB_ENV;
		2216
		2217	cf::sync_job {
		2218	eval {
		2219	$DB->set_flags (BDB::CHKSUM);
		2220
		2221	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2222	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2223	cf::cleanup "db_open(db): $!" if $!;
		2224	};
		2225	cf::cleanup "db_open(db): $@" if $@;
		2226	};
		2227
1087	my $path = cf::localdir . "/database.pst";	2228	my $path = cf::localdir . "/database.pst";
		2229	if (stat $path) {
		2230	cf::sync_job {
		2231	my $pst = Storable::retrieve $path;
1088		2232
1089	sub db_load() {	2233	cf::db_put (board => data => $pst->{board});
1090	warn "loading database $path\n";#d# remove later	2234	cf::db_put (guildrules => data => $pst->{guildrules});
1091	$DB = stat $path ? Storable::retrieve $path : { };	2235	cf::db_put (rent => balance => $pst->{rent}{balance});
1092	}	2236	BDB::db_env_txn_checkpoint $DB_ENV;
1093		2237
1094	my $pid;	2238	unlink $path;
1095
1096	sub db_save() {
1097	warn "saving database $path\n";#d# remove later
1098	waitpid $pid, 0 if $pid;
1099	if (0 == ($pid = fork)) {
1100	$DB->{_meta}{version} = 1;
1101	Storable::nstore $DB, "$path~";
1102	rename "$path~", $path;
1103	cf::_exit 0 if defined $pid;
1104	}	2239	};
1105	}
1106
1107	my $dirty;
1108
1109	sub db_sync() {
1110	db_save if $dirty;
1111	undef $dirty;
1112	}
1113
1114	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1115	db_sync;
1116	});
1117
1118	sub db_dirty() {
1119	$dirty = 1;
1120	$idle->start;
1121	}
1122
1123	sub db_get($;$) {
1124	@_ >= 2
1125	? $DB->{$_[0]}{$_[1]}
1126	: ($DB->{$_[0]} ||= { })
1127	}
1128
1129	sub db_put($$;$) {
1130	if (@_ >= 3) {
1131	$DB->{$_[0]}{$_[1]} = $_[2];
1132	} else {
1133	$DB->{$_[0]} = $_[1];
1134	}
1135	db_dirty;
1136	}
1137
1138	cf::global->attach (
1139	prio => 10000,
1140	on_cleanup => sub {
1141	db_sync;
1142	},	2240	}
1143	);	2241	}
		2242	}
		2243
		2244	sub db_get($$) {
		2245	my $key = "$_[0]/$_[1]";
		2246
		2247	cf::sync_job {
		2248	BDB::db_get $DB, undef, $key, my $data;
		2249
		2250	$! ? ()
		2251	: Compress::LZF::sthaw $data
		2252	}
		2253	}
		2254
		2255	sub db_put($$$) {
		2256	BDB::dbreq_pri 4;
		2257	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
1144	}	2258	}
1145		2259
1146	#############################################################################	2260	#############################################################################
1147	# the server's main()	2261	# the server's init and main functions
		2262
		2263	sub load_resources {
		2264	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2265	or die "unable to load regions file\n";#d#
		2266	}
1148		2267
1149	sub cfg_load {	2268	sub cfg_load {
1150	open my $fh, "<:utf8", cf::confdir . "/config"	2269	open my $fh, "<:utf8", cf::confdir . "/config"
1151	or return;	2270	or return;
1152		2271
1153	local $/;	2272	local $/;
1154	*CFG = YAML::Syck::Load <$fh>;	2273	*CFG = YAML::Syck::Load <$fh>;
		2274
		2275	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2276
		2277	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2278	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2279
		2280	if (exists $CFG{mlockall}) {
		2281	eval {
		2282	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2283	and die "WARNING: m(un)lockall failed: $!\n";
		2284	};
		2285	warn $@ if $@;
		2286	}
		2287	}
		2288
		2289	sub init {
		2290	load_resources;
1155	}	2291	}
1156		2292
1157	sub main {	2293	sub main {
		2294	# we must not ever block the main coroutine
		2295	local $Coro::idle = sub {
		2296	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2297	(async {
		2298	Event::one_event;
		2299	})->prio (Coro::PRIO_MAX);
		2300	};
		2301
1158	cfg_load;	2302	cfg_load;
1159	db_load;	2303	db_init;
1160	load_extensions;	2304	load_extensions;
		2305
		2306	$TICK_WATCHER->start;
1161	Event::loop;	2307	Event::loop;
1162	}	2308	}
1163		2309
1164	#############################################################################	2310	#############################################################################
1165	# initialisation	2311	# initialisation and cleanup
1166		2312
		2313	# install some emergency cleanup handlers
		2314	BEGIN {
		2315	for my $signal (qw(INT HUP TERM)) {
		2316	Event->signal (
		2317	reentrant => 0,
		2318	data => WF_AUTOCANCEL,
		2319	signal => $signal,
		2320	prio => 0,
		2321	cb => sub {
		2322	cf::cleanup "SIG$signal";
		2323	},
		2324	);
		2325	}
		2326	}
		2327
		2328	sub emergency_save() {
		2329	my $freeze_guard = cf::freeze_mainloop;
		2330
		2331	warn "enter emergency perl save\n";
		2332
		2333	cf::sync_job {
		2334	# use a peculiar iteration method to avoid tripping on perl
		2335	# refcount bugs in for. also avoids problems with players
		2336	# and maps saved/destroyed asynchronously.
		2337	warn "begin emergency player save\n";
		2338	for my $login (keys %cf::PLAYER) {
		2339	my $pl = $cf::PLAYER{$login} or next;
		2340	$pl->valid or next;
		2341	$pl->save;
		2342	}
		2343	warn "end emergency player save\n";
		2344
		2345	warn "begin emergency map save\n";
		2346	for my $path (keys %cf::MAP) {
		2347	my $map = $cf::MAP{$path} or next;
		2348	$map->valid or next;
		2349	$map->save;
		2350	}
		2351	warn "end emergency map save\n";
		2352
		2353	warn "begin emergency database checkpoint\n";
		2354	BDB::db_env_txn_checkpoint $DB_ENV;
		2355	warn "end emergency database checkpoint\n";
		2356	};
		2357
		2358	warn "leave emergency perl save\n";
		2359	}
		2360
		2361	sub post_cleanup {
		2362	my ($make_core) = @_;
		2363
		2364	warn Carp::longmess "post_cleanup backtrace"
		2365	if $make_core;
		2366	}
		2367
1167	sub _perl_reload(&) {	2368	sub reload() {
1168	my ($msg) = @_;	2369	# can/must only be called in main
		2370	if ($Coro::current != $Coro::main) {
		2371	warn "can only reload from main coroutine";
		2372	return;
		2373	}
1169		2374
1170	$msg->("reloading...");	2375	warn "reloading...";
		2376
		2377	warn "cancelling server ticker";
		2378	$TICK_WATCHER->cancel;
		2379
		2380	cf::emergency_save;
1171		2381
1172	eval {	2382	eval {
1173	# cancel all watchers	2383	# if anything goes wrong in here, we should simply crash as we already saved
		2384
		2385	warn "cancelling all WF_AUTOCANCEL watchers";
1174	for (Event::all_watchers) {	2386	for (Event::all_watchers) {
1175	$_->cancel if $_->data & WF_AUTOCANCEL;	2387	$_->cancel if $_->data & WF_AUTOCANCEL;
1176	}	2388	}
1177		2389
1178	# unload all extensions	2390	warn "syncing database to disk";
		2391	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		2392
		2393	warn "flushing outstanding aio requests";
1179	for (@exts) {	2394	for (;;) {
1180	$msg->("unloading <$_>");	2395	BDB::flush;
1181	unload_extension $_;	2396	IO::AIO::flush;
		2397	Coro::cede;
		2398	last unless IO::AIO::nreqs || BDB::nreqs;
		2399	warn "iterate...";
		2400	}
		2401
		2402	warn "cancelling all extension coros";
		2403	$_->cancel for values %EXT_CORO;
		2404	%EXT_CORO = ();
		2405
		2406	warn "removing commands";
		2407	%COMMAND = ();
		2408
		2409	warn "removing ext commands";
		2410	%EXTCMD = ();
		2411
		2412	warn "unloading/nuking all extensions";
		2413	for my $pkg (@EXTS) {
		2414	warn "... unloading $pkg";
		2415
		2416	if (my $cb = $pkg->can ("unload")) {
		2417	eval {
		2418	$cb->($pkg);
		2419	1
		2420	} or warn "$pkg unloaded, but with errors: $@";
1182	}	2421	}
1183		2422
		2423	warn "... nuking $pkg";
		2424	Symbol::delete_package $pkg;
		2425	}
		2426
1184	# unload all modules loaded from $LIBDIR	2427	warn "unloading all perl modules loaded from $LIBDIR";
1185	while (my ($k, $v) = each %INC) {	2428	while (my ($k, $v) = each %INC) {
1186	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2429	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1187		2430
1188	$msg->("removing <$k>");	2431	warn "... unloading $k";
1189	delete $INC{$k};	2432	delete $INC{$k};
1190		2433
1191	$k =~ s/\.pm$//;	2434	$k =~ s/\.pm$//;
1192	$k =~ s/\//::/g;	2435	$k =~ s/\//::/g;
1193		2436
…		…
1196	}	2439	}
1197		2440
1198	Symbol::delete_package $k;	2441	Symbol::delete_package $k;
1199	}	2442	}
1200		2443
1201	# sync database to disk
1202	cf::db_sync;
1203
1204	# get rid of safe::, as good as possible	2444	warn "getting rid of safe::, as good as possible";
1205	Symbol::delete_package "safe::$_"	2445	Symbol::delete_package "safe::$_"
1206	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2446	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1207		2447
1208	# remove register_script_function callbacks
1209	# TODO
1210
1211	# unload cf.pm "a bit"	2448	warn "unloading cf.pm \"a bit\"";
1212	delete $INC{"cf.pm"};	2449	delete $INC{"cf.pm"};
1213		2450
1214	# don't, removes xs symbols, too,	2451	# don't, removes xs symbols, too,
1215	# and global variables created in xs	2452	# and global variables created in xs
1216	#Symbol::delete_package __PACKAGE__;	2453	#Symbol::delete_package __PACKAGE__;
1217		2454
1218	# reload cf.pm	2455	warn "unload completed, starting to reload now";
		2456
1219	$msg->("reloading cf.pm");	2457	warn "reloading cf.pm";
1220	require cf;	2458	require cf;
		2459	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1221		2460
1222	# load config and database again	2461	warn "loading config and database again";
1223	cf::cfg_load;	2462	cf::cfg_load;
1224	cf::db_load;
1225		2463
1226	# load extensions	2464	warn "loading extensions";
1227	$msg->("load extensions");
1228	cf::load_extensions;	2465	cf::load_extensions;
1229		2466
1230	# reattach attachments to objects	2467	warn "reattaching attachments to objects/players";
1231	$msg->("reattach");
1232	_global_reattach;	2468	_global_reattach;
		2469	warn "reattaching attachments to maps";
		2470	reattach $_ for values %MAP;
		2471
		2472	warn "loading reloadable resources";
		2473	load_resources;
		2474
		2475	warn "restarting server ticker";
		2476
		2477	$TICK_WATCHER->start;
1233	};	2478	};
1234	$msg->($@) if $@;
1235		2479
1236	$msg->("reloaded");	2480	if ($@) {
		2481	warn $@;
		2482	warn "error while reloading, exiting.";
		2483	exit 1;
		2484	}
		2485
		2486	warn "reloaded";
1237	};	2487	};
1238		2488
1239	sub perl_reload() {	2489	our $RELOAD_WATCHER; # used only during reload
1240	_perl_reload {
1241	warn $_[0];
1242	print "$_[0]\n";
1243	};
1244	}
1245		2490
1246	register "<global>", __PACKAGE__;
1247
1248	register_command "perl-reload" => sub {	2491	register_command "reload" => sub {
1249	my ($who, $arg) = @_;	2492	my ($who, $arg) = @_;
1250		2493
1251	if ($who->flag (FLAG_WIZ)) {	2494	if ($who->flag (FLAG_WIZ)) {
1252	_perl_reload {	2495	$who->message ("reloading server.");
1253	warn $_[0];	2496
1254	$who->message ($_[0]);	2497	# doing reload synchronously and two reloads happen back-to-back,
		2498	# coro crashes during coro_state_free->destroy here.
		2499
		2500	$RELOAD_WATCHER ||= Event->timer (
		2501	reentrant => 0,
		2502	after => 0,
		2503	data => WF_AUTOCANCEL,
		2504	cb => sub {
		2505	reload;
		2506	undef $RELOAD_WATCHER;
		2507	},
1255	};	2508	);
1256	}	2509	}
1257	};	2510	};
1258		2511
1259	unshift @INC, $LIBDIR;	2512	unshift @INC, $LIBDIR;
1260		2513
		2514	my $bug_warning = 0;
		2515
1261	$TICK_WATCHER = Event->timer (	2516	$TICK_WATCHER = Event->timer (
		2517	reentrant => 0,
		2518	parked => 1,
1262	prio => 0,	2519	prio => 0,
1263	at => $NEXT_TICK || 1,	2520	at => $NEXT_TICK || $TICK,
1264	data => WF_AUTOCANCEL,	2521	data => WF_AUTOCANCEL,
1265	cb => sub {	2522	cb => sub {
		2523	if ($Coro::current != $Coro::main) {
		2524	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2525	unless ++$bug_warning > 10;
		2526	return;
		2527	}
		2528
		2529	$NOW = Event::time;
		2530
1266	cf::server_tick; # one server iteration	2531	cf::server_tick; # one server iteration
1267		2532	$RUNTIME += $TICK;
1268	my $NOW = Event::time;
1269	$NEXT_TICK += $TICK;	2533	$NEXT_TICK += $TICK;
1270		2534
		2535	$WAIT_FOR_TICK->broadcast;
		2536	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2537
		2538	Event::sweep;
		2539	Coro::cede_notself;
		2540
		2541	# my $AFTER = Event::time;
		2542	# warn $AFTER - $NOW;#d#
		2543
1271	# if we are delayed by four ticks or more, skip them all	2544	# if we are delayed by four ticks or more, skip them all
1272	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2545	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1273		2546
1274	$TICK_WATCHER->at ($NEXT_TICK);	2547	$TICK_WATCHER->at ($NEXT_TICK);
1275	$TICK_WATCHER->start;	2548	$TICK_WATCHER->start;
1276	},	2549	},
1277	);	2550	);
1278		2551
		2552	{
		2553	BDB::max_poll_time $TICK * 0.1;
		2554	$BDB_POLL_WATCHER = Event->io (
		2555	reentrant => 0,
		2556	fd => BDB::poll_fileno,
		2557	poll => 'r',
		2558	prio => 0,
		2559	data => WF_AUTOCANCEL,
		2560	cb => \&BDB::poll_cb,
		2561	);
		2562	BDB::min_parallel 8;
		2563
		2564	BDB::set_sync_prepare {
		2565	my $status;
		2566	my $current = $Coro::current;
		2567	(
		2568	sub {
		2569	$status = $!;
		2570	$current->ready; undef $current;
		2571	},
		2572	sub {
		2573	Coro::schedule while defined $current;
		2574	$! = $status;
		2575	},
		2576	)
		2577	};
		2578
		2579	unless ($DB_ENV) {
		2580	$DB_ENV = BDB::db_env_create;
		2581
		2582	cf::sync_job {
		2583	eval {
		2584	BDB::db_env_open
		2585	$DB_ENV,
		2586	$BDB_ENV_DIR,
		2587	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2588	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2589	0666;
		2590
		2591	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2592
		2593	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2594	$DB_ENV->set_lk_detect;
		2595	};
		2596
		2597	cf::cleanup "db_env_open(db): $@" if $@;
		2598	};
		2599	}
		2600	}
		2601
		2602	{
		2603	IO::AIO::min_parallel 8;
		2604
		2605	undef $Coro::AIO::WATCHER;
1279	IO::AIO::max_poll_time $TICK * 0.2;	2606	IO::AIO::max_poll_time $TICK * 0.1;
1280		2607	$AIO_POLL_WATCHER = Event->io (
1281	Event->io (fd => IO::AIO::poll_fileno,	2608	reentrant => 0,
		2609	fd => IO::AIO::poll_fileno,
1282	poll => 'r',	2610	poll => 'r',
1283	prio => 5,	2611	prio => 6,
1284	data => WF_AUTOCANCEL,	2612	data => WF_AUTOCANCEL,
1285	cb => \&IO::AIO::poll_cb);	2613	cb => \&IO::AIO::poll_cb,
		2614	);
		2615	}
		2616
		2617	$WRITE_RUNTIME_WATCHER = Event->timer (
		2618	reentrant => 0,
		2619	data => WF_AUTOCANCEL,
		2620	after => 1,
		2621	interval => 10,
		2622	prio => 6, # keep it lowest so it acts like a watchdog
		2623	cb => Coro::unblock_sub {
		2624	write_runtime
		2625	or warn "ERROR: unable to write runtime file: $!";
		2626	},
		2627	);
		2628
		2629	END { cf::emergency_save }
1286		2630
1287	1	2631	1
1288		2632

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