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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.94 by root, Thu Dec 21 23:02:54 2006 UTC vs.
Revision 1.142 by root, Fri Jan 5 21:51:42 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;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
10	use IO::AIO ();	22	use IO::AIO 2.31 ();
11	use YAML::Syck ();	23	use YAML::Syck ();
12	use Time::HiRes;	24	use Time::HiRes;
13	use Event;	25
14	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
15		27
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	29	$YAML::Syck::ImplicitUnicode = 1;
18		30
19	use strict;	31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		32
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		34
23	our %COMMAND = ();	35	our %COMMAND = ();
24	our %COMMAND_TIME = ();	36	our %COMMAND_TIME = ();
25	our %EXTCMD = ();	37	our %EXTCMD = ();
26		38
27	_init_vars;
28
29	our @EVENT;	39	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	40	our $LIBDIR = datadir . "/ext";
31		41
32	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	43	our $TICK_WATCHER;
34	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
35		46
36	our %CFG;	47	our %CFG;
37		48
38	our $UPTIME; $UPTIME ||= time;	49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
39		76
40	#############################################################################	77	#############################################################################
41		78
42	=head2 GLOBAL VARIABLES	79	=head2 GLOBAL VARIABLES
43		80
44	=over 4	81	=over 4
45		82
46	=item $cf::UPTIME	83	=item $cf::UPTIME
47		84
48	The timestamp of the server start (so not actually an uptime).	85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
49		91
50	=item $cf::LIBDIR	92	=item $cf::LIBDIR
51		93
52	The perl library directory, where extensions and cf-specific modules can	94	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
54		100
55	=item $cf::TICK	101	=item $cf::TICK
56		102
57	The interval between server ticks, in seconds.	103	The interval between server ticks, in seconds.
58		104
…		…
66	=cut	112	=cut
67		113
68	BEGIN {	114	BEGIN {
69	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
71	$msg .= "\n"	119	$msg .= "\n"
72	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
73		121
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
76	};	123	};
77	}	124	}
78		125
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		132
86	# we bless all objects into (empty) derived classes to force a method lookup	133	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	134	# within the Safe compartment.
88	for my $pkg (qw(	135	for my $pkg (qw(
89	cf::global	136	cf::global cf::attachable
90	cf::object cf::object::player	137	cf::object cf::object::player
91	cf::client cf::player	138	cf::client cf::player
92	cf::arch cf::living	139	cf::arch cf::living
93	cf::map cf::party cf::region	140	cf::map cf::party cf::region
94	)) {	141	)) {
…		…
132	sub to_json($) {	179	sub to_json($) {
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
134	JSON::Syck::Dump $_[0]	181	JSON::Syck::Dump $_[0]
135	}	182	}
136		183
		184	=item cf::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
		203	my ($key) = @_;
		204
		205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	sub freeze_mainloop {
		227	return unless $TICK_WATCHER->is_active;
		228
		229	my $guard = Coro::guard { $TICK_WATCHER->start };
		230	$TICK_WATCHER->stop;
		231	$guard
		232	}
		233
		234	=item cf::async { BLOCK }
		235
		236	Currently the same as Coro::async_pool, meaning you cannot use
		237	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		238	thing you are allowed to do is call C<prio> on it.
		239
		240	=cut
		241
		242	BEGIN { *async = \&Coro::async_pool }
		243
		244	=item cf::sync_job { BLOCK }
		245
		246	The design of crossfire+ requires that the main coro ($Coro::main) is
		247	always able to handle events or runnable, as crossfire+ is only partly
		248	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		249
		250	If it must be done, put the blocking parts into C<sync_job>. This will run
		251	the given BLOCK in another coroutine while waiting for the result. The
		252	server will be frozen during this time, so the block should either finish
		253	fast or be very important.
		254
		255	=cut
		256
		257	sub sync_job(&) {
		258	my ($job) = @_;
		259
		260	if ($Coro::current == $Coro::main) {
		261	# this is the main coro, too bad, we have to block
		262	# till the operation succeeds, freezing the server :/
		263
		264	# TODO: use suspend/resume instead
		265	# (but this is cancel-safe)
		266	my $freeze_guard = freeze_mainloop;
		267
		268	my $busy = 1;
		269	my @res;
		270
		271	(async {
		272	@res = eval { $job->() };
		273	warn $@ if $@;
		274	undef $busy;
		275	})->prio (Coro::PRIO_MAX);
		276
		277	while ($busy) {
		278	Coro::cede or Event::one_event;
		279	}
		280
		281	wantarray ? @res : $res[0]
		282	} else {
		283	# we are in another coroutine, how wonderful, everything just works
		284
		285	$job->()
		286	}
		287	}
		288
		289	=item $coro = cf::async_ext { BLOCK }
		290
		291	Like async, but this coro is automcatially being canceled when the
		292	extension calling this is being unloaded.
		293
		294	=cut
		295
		296	sub async_ext(&) {
		297	my $cb = shift;
		298
		299	my $coro = &Coro::async ($cb);
		300
		301	$coro->on_destroy (sub {
		302	delete $EXT_CORO{$coro+0};
		303	});
		304	$EXT_CORO{$coro+0} = $coro;
		305
		306	$coro
		307	}
		308
		309	sub write_runtime {
		310	my $runtime = cf::localdir . "/runtime";
		311
		312	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		313	or return;
		314
		315	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		316	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		317	and return;
		318
		319	aio_fsync $fh
		320	and return;
		321
		322	close $fh
		323	or return;
		324
		325	aio_rename "$runtime~", $runtime
		326	and return;
		327
		328	1
		329	}
		330
137	=back	331	=back
138		332
139	=cut	333	=cut
		334
		335	#############################################################################
		336
		337	package cf::path;
		338
		339	sub new {
		340	my ($class, $path, $base) = @_;
		341
		342	$path = $path->as_string if ref $path;
		343
		344	my $self = bless { }, $class;
		345
		346	# {... are special paths that are not touched
		347	# ?xxx/... are special absolute paths
		348	# ?random/... random maps
		349	# /! non-realised random map exit
		350	# /... normal maps
		351	# ~/... per-player maps without a specific player (DO NOT USE)
		352	# ~user/... per-player map of a specific user
		353
		354	if ($path =~ /^{/) {
		355	# fine as it is
		356	} elsif ($path =~ s{^\?random/}{}) {
		357	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		358	$self->{random} = cf::from_json $data;
		359	} else {
		360	if ($path =~ s{^~([^/]+)?}{}) {
		361	$self->{user_rel} = 1;
		362
		363	if (defined $1) {
		364	$self->{user} = $1;
		365	} elsif ($base =~ m{^~([^/]+)/}) {
		366	$self->{user} = $1;
		367	} else {
		368	warn "cannot resolve user-relative path without user <$path,$base>\n";
		369	}
		370	} elsif ($path =~ /^\//) {
		371	# already absolute
		372	} else {
		373	$base =~ s{[^/]+/?$}{};
		374	return $class->new ("$base/$path");
		375	}
		376
		377	for ($path) {
		378	redo if s{/\.?/}{/};
		379	redo if s{/[^/]+/\.\./}{/};
		380	}
		381	}
		382
		383	$self->{path} = $path;
		384
		385	$self
		386	}
		387
		388	# the name / primary key / in-game path
		389	sub as_string {
		390	my ($self) = @_;
		391
		392	$self->{user_rel} ? "~$self->{user}$self->{path}"
		393	: $self->{random} ? "?random/$self->{path}"
		394	: $self->{path}
		395	}
		396
		397	# the displayed name, this is a one way mapping
		398	sub visible_name {
		399	my ($self) = @_;
		400
		401	# if (my $rmp = $self->{random}) {
		402	# # todo: be more intelligent about this
		403	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		404	# } else {
		405	$self->as_string
		406	# }
		407	}
		408
		409	# escape the /'s in the path
		410	sub _escaped_path {
		411	# ∕ is U+2215
		412	(my $path = $_[0]{path}) =~ s/\//∕/g;
		413	$path
		414	}
		415
		416	# the original (read-only) location
		417	sub load_path {
		418	my ($self) = @_;
		419
		420	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		421	}
		422
		423	# the temporary/swap location
		424	sub save_path {
		425	my ($self) = @_;
		426
		427	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		428	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		429	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		430	}
		431
		432	# the unique path, might be eq to save_path
		433	sub uniq_path {
		434	my ($self) = @_;
		435
		436	$self->{user_rel} || $self->{random}
		437	? undef
		438	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		439	}
		440
		441	# return random map parameters, or undef
		442	sub random_map_params {
		443	my ($self) = @_;
		444
		445	$self->{random}
		446	}
		447
		448	# this is somewhat ugly, but style maps do need special treatment
		449	sub is_style_map {
		450	$_[0]{path} =~ m{^/styles/}
		451	}
		452
		453	package cf;
140		454
141	#############################################################################	455	#############################################################################
142		456
143	=head2 ATTACHABLE OBJECTS	457	=head2 ATTACHABLE OBJECTS
144		458
…		…
249	my ($self, $victim) = @_;	563	my ($self, $victim) = @_;
250	...	564	...
251	}	565	}
252	}	566	}
253		567
		568	=item $attachable->valid
		569
		570	Just because you have a perl object does not mean that the corresponding
		571	C-level object still exists. If you try to access an object that has no
		572	valid C counterpart anymore you get an exception at runtime. This method
		573	can be used to test for existence of the C object part without causing an
		574	exception.
		575
254	=cut	576	=cut
255		577
256	# the following variables are defined in .xs and must not be re-created	578	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	579	our @CB_GLOBAL = (); # registry for all global events
		580	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	581	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	582	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	583	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	584	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	585	our @CB_MAP = ();
263		586
264	my %attachment;	587	my %attachment;
265		588
266	sub _attach_cb($$$$) {	589	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	590	my ($registry, $event, $prio, $cb) = @_;
…		…
272		595
273	@{$registry->[$event]} = sort	596	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	597	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	598	@{$registry->[$event] || []}, $cb;
276	}	599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		603
278	# attach handles attaching event callbacks	604	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	605	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	606	# registry (== where the callback attaches to).
281	sub _attach {	607	sub _attach {
…		…
283		609
284	my $object_type;	610	my $object_type;
285	my $prio = 0;	611	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
288	while (@arg) {	619	while (@arg) {
289	my $type = shift @arg;	620	my $type = shift @arg;
290		621
291	if ($type eq "prio") {	622	if ($type eq "prio") {
292	$prio = shift @arg;	623	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	698	my ($obj, $name) = @_;
368		699
369	exists $obj->{_attachment}{$name}	700	exists $obj->{_attachment}{$name}
370	}	701	}
371		702
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	704	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	705	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	706	(\\\@CB_$klass, KLASS_$klass)
376	}	707	}
377		708
…		…
413	}	744	}
414		745
415	0	746	0
416	}	747	}
417		748
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	749	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		750
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, ...)	751	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		752
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	753	Generate an object-specific event with the given arguments.
429		754
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	755	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	756	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	757	results (if you must, access C<@cf::invoke_results> directly).
433		758
434	=back	759	=back
435		760
436	=cut	761	=cut
437		762
438	#############################################################################	763	#############################################################################
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	764	# object support
460		765
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 {	766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	768	my ($obj) = @_;
		769
476	my $registry = $obj->registry;	770	my $registry = $obj->registry;
477		771
478	@$registry = ();	772	@$registry = ();
479		773
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	774	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	783	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	784	}
491	}	785	}
492	}	786	}
493		787
494	sub object_freezer_save {	788	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	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	789	prio => -1000000,
		790	on_instantiate => sub {
		791	my ($obj, $data) = @_;
		792
		793	$data = from_json $data;
		794
		795	for (@$data) {
		796	my ($name, $args) = @$_;
		797
		798	$obj->attach ($name, %{$args || {} });
		799	}
		800	},
		801	on_reattach => \&reattach,
554	on_clone => sub {	802	on_clone => sub {
555	my ($src, $dst) = @_;	803	my ($src, $dst) = @_;
556		804
557	@{$dst->registry} = @{$src->registry};	805	@{$dst->registry} = @{$src->registry};
558		806
…		…
560		808
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	809	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	810	if exists $src->{_attachment};
563	},	811	},
564	);	812	);
		813
		814	sub object_freezer_save {
		815	my ($filename, $rdata, $objs) = @_;
		816
		817	sync_job {
		818	if (length $$rdata) {
		819	warn sprintf "saving %s (%d,%d)\n",
		820	$filename, length $$rdata, scalar @$objs;
		821
		822	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		823	chmod SAVE_MODE, $fh;
		824	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		825	aio_fsync $fh;
		826	close $fh;
		827
		828	if (@$objs) {
		829	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		830	chmod SAVE_MODE, $fh;
		831	my $data = Storable::nfreeze { version => 1, objs => $objs };
		832	aio_write $fh, 0, (length $data), $data, 0;
		833	aio_fsync $fh;
		834	close $fh;
		835	aio_rename "$filename.pst~", "$filename.pst";
		836	}
		837	} else {
		838	aio_unlink "$filename.pst";
		839	}
		840
		841	aio_rename "$filename~", $filename;
		842	} else {
		843	warn "FATAL: $filename~: $!\n";
		844	}
		845	} else {
		846	aio_unlink $filename;
		847	aio_unlink "$filename.pst";
		848	}
		849	}
		850	}
		851
		852	sub object_freezer_as_string {
		853	my ($rdata, $objs) = @_;
		854
		855	use Data::Dumper;
		856
		857	$$rdata . Dumper $objs
		858	}
		859
		860	sub object_thawer_load {
		861	my ($filename) = @_;
		862
		863	my ($data, $av);
		864
		865	(aio_load $filename, $data) >= 0
		866	or return;
		867
		868	unless (aio_stat "$filename.pst") {
		869	(aio_load "$filename.pst", $av) >= 0
		870	or return;
		871	$av = eval { (Storable::thaw $av)->{objs} };
		872	}
		873
		874	warn sprintf "loading %s (%d)\n",
		875	$filename, length $data, scalar @{$av || []};#d#
		876	return ($data, $av);
		877	}
565		878
566	#############################################################################	879	#############################################################################
567	# command handling &c	880	# command handling &c
568		881
569	=item cf::register_command $name => \&callback($ob,$args);	882	=item cf::register_command $name => \&callback($ob,$args);
…		…
758		1071
759	=head2 CORE EXTENSIONS	1072	=head2 CORE EXTENSIONS
760		1073
761	Functions and methods that extend core crossfire objects.	1074	Functions and methods that extend core crossfire objects.
762		1075
		1076	=head3 cf::player
		1077
763	=over 4	1078	=over 4
764		1079
765	=item cf::player::exists $login	1080	=item cf::player::exists $login
766		1081
767	Returns true when the given account exists.	1082	Returns true when the given account exists.
…		…
771	sub cf::player::exists($) {	1086	sub cf::player::exists($) {
772	cf::player::find $_[0]	1087	cf::player::find $_[0]
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1088	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
774	}	1089	}
775		1090
		1091	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1092
		1093	Sends an ext reply to the player.
		1094
		1095	=cut
		1096
		1097	sub cf::player::ext_reply($$$%) {
		1098	my ($self, $id, %msg) = @_;
		1099
		1100	$msg{msgid} = $id;
		1101
		1102	$self->send ("ext " . to_json \%msg);
		1103	}
		1104
		1105	=back
		1106
		1107
		1108	=head3 cf::map
		1109
		1110	=over 4
		1111
		1112	=cut
		1113
		1114	package cf::map;
		1115
		1116	use Fcntl;
		1117	use Coro::AIO;
		1118
		1119	our $MAX_RESET = 3600;
		1120	our $DEFAULT_RESET = 3000;
		1121
		1122	sub generate_random_map {
		1123	my ($path, $rmp) = @_;
		1124
		1125	# mit "rum" bekleckern, nicht
		1126	cf::map::_create_random_map
		1127	$path,
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region})
		1139	}
		1140
		1141	# and all this just because we cannot iterate over
		1142	# all maps in C++...
		1143	sub change_all_map_light {
		1144	my ($change) = @_;
		1145
		1146	$_->change_map_light ($change)
		1147	for grep $_->outdoor, values %cf::MAP;
		1148	}
		1149
		1150	sub try_load_header($) {
		1151	my ($path) = @_;
		1152
		1153	utf8::encode $path;
		1154	aio_open $path, O_RDONLY, 0
		1155	or return;
		1156
		1157	my $map = cf::map::new
		1158	or return;
		1159
		1160	# for better error messages only, will be overwritten
		1161	$map->path ($path);
		1162
		1163	$map->load_header ($path)
		1164	or return;
		1165
		1166	$map->{load_path} = $path;
		1167
		1168	$map
		1169	}
		1170
		1171	sub find;
		1172	sub find {
		1173	my ($path, $origin) = @_;
		1174
		1175	#warn "find<$path,$origin>\n";#d#
		1176
		1177	$path = new cf::path $path, $origin && $origin->path;
		1178	my $key = $path->as_string;
		1179
		1180	cf::lock_wait "map_find:$key";
		1181
		1182	$cf::MAP{$key} || do {
		1183	my $guard = cf::lock_acquire "map_find:$key";
		1184
		1185	# do it the slow way
		1186	my $map = try_load_header $path->save_path;
		1187
		1188	Coro::cede;
		1189
		1190	if ($map) {
		1191	$map->last_access ((delete $map->{last_access})
		1192	|| $cf::RUNTIME); #d#
		1193	# safety
		1194	$map->{instantiate_time} = $cf::RUNTIME
		1195	if $map->{instantiate_time} > $cf::RUNTIME;
		1196	} else {
		1197	if (my $rmp = $path->random_map_params) {
		1198	$map = generate_random_map $key, $rmp;
		1199	} else {
		1200	$map = try_load_header $path->load_path;
		1201	}
		1202
		1203	$map or return;
		1204
		1205	$map->{load_original} = 1;
		1206	$map->{instantiate_time} = $cf::RUNTIME;
		1207	$map->last_access ($cf::RUNTIME);
		1208	$map->instantiate;
		1209
		1210	# per-player maps become, after loading, normal maps
		1211	$map->per_player (0) if $path->{user_rel};
		1212	}
		1213
		1214	$map->path ($key);
		1215	$map->{path} = $path;
		1216	$map->{last_save} = $cf::RUNTIME;
		1217
		1218	Coro::cede;
		1219
		1220	if ($map->should_reset) {
		1221	$map->reset;
		1222	undef $guard;
		1223	$map = find $path
		1224	or return;
		1225	}
		1226
		1227	$cf::MAP{$key} = $map
		1228	}
		1229	}
		1230
		1231	sub load {
		1232	my ($self) = @_;
		1233
		1234	my $path = $self->{path};
		1235	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1236
		1237	return if $self->in_memory != cf::MAP_SWAPPED;
		1238
		1239	$self->in_memory (cf::MAP_LOADING);
		1240
		1241	$self->alloc;
		1242	$self->load_objects ($self->{load_path}, 1)
		1243	or return;
		1244
		1245	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1246	if delete $self->{load_original};
		1247
		1248	if (my $uniq = $path->uniq_path) {
		1249	utf8::encode $uniq;
		1250	if (aio_open $uniq, O_RDONLY, 0) {
		1251	$self->clear_unique_items;
		1252	$self->load_objects ($uniq, 0);
		1253	}
		1254	}
		1255
		1256	Coro::cede;
		1257
		1258	# now do the right thing for maps
		1259	$self->link_multipart_objects;
		1260
		1261	if ($self->{path}->is_style_map) {
		1262	$self->{deny_save} = 1;
		1263	$self->{deny_reset} = 1;
		1264	} else {
		1265	$self->fix_auto_apply;
		1266	$self->decay_objects;
		1267	$self->update_buttons;
		1268	$self->set_darkness_map;
		1269	$self->difficulty ($self->estimate_difficulty)
		1270	unless $self->difficulty;
		1271	$self->activate;
		1272	}
		1273
		1274	Coro::cede;
		1275
		1276	$self->in_memory (cf::MAP_IN_MEMORY);
		1277	}
		1278
		1279	sub find_sync {
		1280	my ($path, $origin) = @_;
		1281
		1282	cf::sync_job { cf::map::find $path, $origin }
		1283	}
		1284
		1285	sub do_load_sync {
		1286	my ($map) = @_;
		1287
		1288	cf::sync_job { $map->load };
		1289	}
		1290
		1291	sub save {
		1292	my ($self) = @_;
		1293
		1294	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1295
		1296	$self->{last_save} = $cf::RUNTIME;
		1297
		1298	return unless $self->dirty;
		1299
		1300	my $save = $self->{path}->save_path; utf8::encode $save;
		1301	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1302
		1303	$self->{load_path} = $save;
		1304
		1305	return if $self->{deny_save};
		1306
		1307	local $self->{last_access} = $self->last_access;#d#
		1308
		1309	if ($uniq) {
		1310	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1311	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1312	} else {
		1313	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1314	}
		1315	}
		1316
		1317	sub swap_out {
		1318	my ($self) = @_;
		1319
		1320	# save first because save cedes
		1321	$self->save;
		1322
		1323	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1324
		1325	return if $self->players;
		1326	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1327	return if $self->{deny_save};
		1328
		1329	$self->clear;
		1330	$self->in_memory (cf::MAP_SWAPPED);
		1331	}
		1332
		1333	sub reset_at {
		1334	my ($self) = @_;
		1335
		1336	# TODO: safety, remove and allow resettable per-player maps
		1337	return 1e99 if $self->{path}{user_rel};
		1338	return 1e99 if $self->{deny_reset};
		1339
		1340	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1341	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1342
		1343	$time + $to
		1344	}
		1345
		1346	sub should_reset {
		1347	my ($self) = @_;
		1348
		1349	$self->reset_at <= $cf::RUNTIME
		1350	}
		1351
		1352	sub unlink_save {
		1353	my ($self) = @_;
		1354
		1355	utf8::encode (my $save = $self->{path}->save_path);
		1356	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1357	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1358	}
		1359
		1360	sub rename {
		1361	my ($self, $new_path) = @_;
		1362
		1363	$self->unlink_save;
		1364
		1365	delete $cf::MAP{$self->path};
		1366	$self->{path} = new cf::path $new_path;
		1367	$self->path ($self->{path}->as_string);
		1368	$cf::MAP{$self->path} = $self;
		1369
		1370	$self->save;
		1371	}
		1372
		1373	sub reset {
		1374	my ($self) = @_;
		1375
		1376	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1377
		1378	return if $self->players;
		1379	return if $self->{path}{user_rel};#d#
		1380
		1381	warn "resetting map ", $self->path;#d#
		1382
		1383	delete $cf::MAP{$self->path};
		1384
		1385	$_->clear_links_to ($self) for values %cf::MAP;
		1386
		1387	$self->unlink_save;
		1388	$self->destroy;
		1389	}
		1390
		1391	my $nuke_counter = "aaaa";
		1392
		1393	sub nuke {
		1394	my ($self) = @_;
		1395
		1396	$self->{deny_save} = 1;
		1397	$self->reset_timeout (1);
		1398	$self->rename ("{nuke}/" . ($nuke_counter++));
		1399	$self->reset; # polite request, might not happen
		1400	}
		1401
		1402	sub customise_for {
		1403	my ($map, $ob) = @_;
		1404
		1405	if ($map->per_player) {
		1406	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1407	}
		1408
		1409	$map
		1410	}
		1411
		1412	sub emergency_save {
		1413	my $freeze_guard = cf::freeze_mainloop;
		1414
		1415	warn "enter emergency map save\n";
		1416
		1417	cf::sync_job {
		1418	warn "begin emergency map save\n";
		1419	$_->save for values %cf::MAP;
		1420	};
		1421
		1422	warn "end emergency map save\n";
		1423	}
		1424
		1425	package cf;
		1426
		1427	=back
		1428
		1429
		1430	=head3 cf::object::player
		1431
		1432	=over 4
		1433
776	=item $player_object->reply ($npc, $msg[, $flags])	1434	=item $player_object->reply ($npc, $msg[, $flags])
777		1435
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1436	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
779	can be C<undef>. Does the right thing when the player is currently in a	1437	can be C<undef>. Does the right thing when the player is currently in a
780	dialogue with the given NPC character.	1438	dialogue with the given NPC character.
781		1439
782	=cut	1440	=cut
783		1441
784	# rough implementation of a future "reply" method that works	1442	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	1443	# with dialog boxes.
		1444	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	1445	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	1446	my ($self, $npc, $msg, $flags) = @_;
788		1447
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1448	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		1449
…		…
794	$msg = $npc->name . " says: $msg" if $npc;	1453	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	1454	$self->message ($msg, $flags);
796	}	1455	}
797	}	1456	}
798		1457
799	=item $player->ext_reply ($msgid, $msgtype, %msg)
800
801	Sends an ext reply to the player.
802
803	=cut
804
805	sub cf::player::ext_reply($$$%) {
806	my ($self, $id, %msg) = @_;
807
808	$msg{msgid} = $id;
809
810	$self->send ("ext " . to_json \%msg);
811	}
812
813	=item $player_object->may ("access")	1458	=item $player_object->may ("access")
814		1459
815	Returns wether the given player is authorized to access resource "access"	1460	Returns wether the given player is authorized to access resource "access"
816	(e.g. "command_wizcast").	1461	(e.g. "command_wizcast").
817		1462
…		…
824	(ref $cf::CFG{"may_$access"}	1469	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1470	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1471	: $cf::CFG{"may_$access"})
827	}	1472	}
828		1473
829	=cut	1474	=item $player_object->enter_link
830		1475
831	#############################################################################	1476	Freezes the player and moves him/her to a special map (C<{link}>).
		1477
		1478	The player should be reaosnably safe there for short amounts of time. You
		1479	I<MUST> call C<leave_link> as soon as possible, though.
		1480
		1481	=item $player_object->leave_link ($map, $x, $y)
		1482
		1483	Moves the player out of the specila link map onto the given map. If the
		1484	map is not valid (or omitted), the player will be moved back to the
		1485	location he/she was before the call to C<enter_link>, or, if that fails,
		1486	to the emergency map position.
		1487
		1488	Might block.
		1489
		1490	=cut
		1491
		1492	sub cf::object::player::enter_link {
		1493	my ($self) = @_;
		1494
		1495	$self->deactivate_recursive;
		1496
		1497	return if $self->map == $LINK_MAP;
		1498
		1499	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1500	if $self->map;
		1501
		1502	$self->enter_map ($LINK_MAP, 20, 20);
		1503	}
		1504
		1505	sub cf::object::player::leave_link {
		1506	my ($self, $map, $x, $y) = @_;
		1507
		1508	my $link_pos = delete $self->{_link_pos};
		1509
		1510	unless ($map) {
		1511	# restore original map position
		1512	($map, $x, $y) = @{ $link_pos || [] };
		1513	$map = cf::map::find $map;
		1514
		1515	unless ($map) {
		1516	($map, $x, $y) = @$EMERGENCY_POSITION;
		1517	$map = cf::map::find $map
		1518	or die "FATAL: cannot load emergency map\n";
		1519	}
		1520	}
		1521
		1522	($x, $y) = (-1, -1)
		1523	unless (defined $x) && (defined $y);
		1524
		1525	# use -1 or undef as default coordinates, not 0, 0
		1526	($x, $y) = ($map->enter_x, $map->enter_y)
		1527	if $x <=0 && $y <= 0;
		1528
		1529	$map->load;
		1530
		1531	$self->activate_recursive;
		1532	$self->enter_map ($map, $x, $y);
		1533	}
		1534
		1535	cf::player->attach (
		1536	on_logout => sub {
		1537	my ($pl) = @_;
		1538
		1539	# abort map switching before logout
		1540	if ($pl->ob->{_link_pos}) {
		1541	cf::sync_job {
		1542	$pl->ob->leave_link
		1543	};
		1544	}
		1545	},
		1546	on_login => sub {
		1547	my ($pl) = @_;
		1548
		1549	# try to abort aborted map switching on player login :)
		1550	# should happen only on crashes
		1551	if ($pl->ob->{_link_pos}) {
		1552
		1553	$pl->ob->enter_link;
		1554	(async {
		1555	# we need this sleep as the login has a concurrent enter_exit running
		1556	# and this sleep increases chances of the player not ending up in scorn
		1557	$pl->ob->reply (undef,
		1558	"There was an internal problem at your last logout, "
		1559	. "the server will try to bring you to your intended destination in a second.",
		1560	cf::NDI_RED);
		1561	Coro::Timer::sleep 1;
		1562	$pl->ob->leave_link;
		1563	})->prio (2);
		1564	}
		1565	},
		1566	);
		1567
		1568	=item $player_object->goto ($path, $x, $y)
		1569
		1570	=cut
		1571
		1572	sub cf::object::player::goto {
		1573	my ($self, $path, $x, $y) = @_;
		1574
		1575	$self->enter_link;
		1576
		1577	(async {
		1578	$path = new cf::path $path;
		1579
		1580	my $map = cf::map::find $path->as_string;
		1581	$map = $map->customise_for ($self) if $map;
		1582
		1583	# warn "entering ", $map->path, " at ($x, $y)\n"
		1584	# if $map;
		1585
		1586	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1587
		1588	$self->leave_link ($map, $x, $y);
		1589	})->prio (1);
		1590	}
		1591
		1592	=item $player_object->enter_exit ($exit_object)
		1593
		1594	=cut
		1595
		1596	sub parse_random_map_params {
		1597	my ($spec) = @_;
		1598
		1599	my $rmp = { # defaults
		1600	xsize => 10,
		1601	ysize => 10,
		1602	};
		1603
		1604	for (split /\n/, $spec) {
		1605	my ($k, $v) = split /\s+/, $_, 2;
		1606
		1607	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1608	}
		1609
		1610	$rmp
		1611	}
		1612
		1613	sub prepare_random_map {
		1614	my ($exit) = @_;
		1615
		1616	# all this does is basically replace the /! path by
		1617	# a new random map path (?random/...) with a seed
		1618	# that depends on the exit object
		1619
		1620	my $rmp = parse_random_map_params $exit->msg;
		1621
		1622	if ($exit->map) {
		1623	$rmp->{region} = $exit->map->region_name;
		1624	$rmp->{origin_map} = $exit->map->path;
		1625	$rmp->{origin_x} = $exit->x;
		1626	$rmp->{origin_y} = $exit->y;
		1627	}
		1628
		1629	$rmp->{random_seed} ||= $exit->random_seed;
		1630
		1631	my $data = cf::to_json $rmp;
		1632	my $md5 = Digest::MD5::md5_hex $data;
		1633
		1634	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1635	aio_write $fh, 0, (length $data), $data, 0;
		1636
		1637	$exit->slaying ("?random/$md5");
		1638	$exit->msg (undef);
		1639	}
		1640	}
		1641
		1642	sub cf::object::player::enter_exit {
		1643	my ($self, $exit) = @_;
		1644
		1645	return unless $self->type == cf::PLAYER;
		1646
		1647	$self->enter_link;
		1648
		1649	(async {
		1650	$self->deactivate_recursive; # just to be sure
		1651	unless (eval {
		1652	prepare_random_map $exit
		1653	if $exit->slaying eq "/!";
		1654
		1655	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1656	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1657
		1658	1;
		1659	}) {
		1660	$self->message ("Something went wrong deep within the crossfire server. "
		1661	. "I'll try to bring you back to the map you were before. "
		1662	. "Please report this to the dungeon master",
		1663	cf::NDI_UNIQUE | cf::NDI_RED);
		1664
		1665	warn "ERROR in enter_exit: $@";
		1666	$self->leave_link;
		1667	}
		1668	})->prio (1);
		1669	}
		1670
		1671	=head3 cf::client
		1672
		1673	=over 4
		1674
		1675	=item $client->send_drawinfo ($text, $flags)
		1676
		1677	Sends a drawinfo packet to the client. Circumvents output buffering so
		1678	should not be used under normal circumstances.
		1679
		1680	=cut
		1681
		1682	sub cf::client::send_drawinfo {
		1683	my ($self, $text, $flags) = @_;
		1684
		1685	utf8::encode $text;
		1686	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1687	}
		1688
		1689
		1690	=item $success = $client->query ($flags, "text", \&cb)
		1691
		1692	Queues a query to the client, calling the given callback with
		1693	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1694	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1695
		1696	Queries can fail, so check the return code. Or don't, as queries will become
		1697	reliable at some point in the future.
		1698
		1699	=cut
		1700
		1701	sub cf::client::query {
		1702	my ($self, $flags, $text, $cb) = @_;
		1703
		1704	return unless $self->state == ST_PLAYING
		1705	|| $self->state == ST_SETUP
		1706	|| $self->state == ST_CUSTOM;
		1707
		1708	$self->state (ST_CUSTOM);
		1709
		1710	utf8::encode $text;
		1711	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1712
		1713	$self->send_packet ($self->{query_queue}[0][0])
		1714	if @{ $self->{query_queue} } == 1;
		1715	}
		1716
		1717	cf::client->attach (
		1718	on_reply => sub {
		1719	my ($ns, $msg) = @_;
		1720
		1721	# this weird shuffling is so that direct followup queries
		1722	# get handled first
		1723	my $queue = delete $ns->{query_queue}
		1724	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1725
		1726	(shift @$queue)->[1]->($msg);
		1727
		1728	push @{ $ns->{query_queue} }, @$queue;
		1729
		1730	if (@{ $ns->{query_queue} } == @$queue) {
		1731	if (@$queue) {
		1732	$ns->send_packet ($ns->{query_queue}[0][0]);
		1733	} else {
		1734	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1735	}
		1736	}
		1737	},
		1738	);
		1739
		1740	=item $client->async (\&cb)
		1741
		1742	Create a new coroutine, running the specified callback. The coroutine will
		1743	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1744	or loss of connection).
		1745
		1746	=cut
		1747
		1748	sub cf::client::async {
		1749	my ($self, $cb) = @_;
		1750
		1751	my $coro = &Coro::async ($cb);
		1752
		1753	$coro->on_destroy (sub {
		1754	delete $self->{_coro}{$coro+0};
		1755	});
		1756
		1757	$self->{_coro}{$coro+0} = $coro;
		1758
		1759	$coro
		1760	}
		1761
		1762	cf::client->attach (
		1763	on_destroy => sub {
		1764	my ($ns) = @_;
		1765
		1766	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1767	},
		1768	);
		1769
		1770	=back
		1771
832		1772
833	=head2 SAFE SCRIPTING	1773	=head2 SAFE SCRIPTING
834		1774
835	Functions that provide a safe environment to compile and execute	1775	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	1776	snippets of perl code without them endangering the safety of the server
…		…
988		1928
989	{	1929	{
990	my $path = cf::localdir . "/database.pst";	1930	my $path = cf::localdir . "/database.pst";
991		1931
992	sub db_load() {	1932	sub db_load() {
993	warn "loading database $path\n";#d# remove later
994	$DB = stat $path ? Storable::retrieve $path : { };	1933	$DB = stat $path ? Storable::retrieve $path : { };
995	}	1934	}
996		1935
997	my $pid;	1936	my $pid;
998		1937
999	sub db_save() {	1938	sub db_save() {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;	1939	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {	1940	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;	1941	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";	1942	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;	1943	rename "$path~", $path;
…		…
1053	open my $fh, "<:utf8", cf::confdir . "/config"	1991	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;	1992	or return;
1055		1993
1056	local $/;	1994	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;	1995	*CFG = YAML::Syck::Load <$fh>;
		1996
		1997	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		1998
		1999	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2000	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2001
		2002	if (exists $CFG{mlockall}) {
		2003	eval {
		2004	$CFG{mlockall} ? &mlockall : &munlockall
		2005	and die "WARNING: m(un)lockall failed: $!\n";
		2006	};
		2007	warn $@ if $@;
		2008	}
1058	}	2009	}
1059		2010
1060	sub main {	2011	sub main {
		2012	# we must not ever block the main coroutine
		2013	local $Coro::idle = sub {
		2014	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2015	async { Event::one_event };
		2016	};
		2017
1061	cfg_load;	2018	cfg_load;
1062	db_load;	2019	db_load;
1063	load_extensions;	2020	load_extensions;
1064	Event::loop;	2021	Event::loop;
1065	}	2022	}
1066		2023
1067	#############################################################################	2024	#############################################################################
1068	# initialisation	2025	# initialisation
1069		2026
1070	sub _perl_reload(&) {	2027	sub reload() {
1071	my ($msg) = @_;	2028	# can/must only be called in main
		2029	if ($Coro::current != $Coro::main) {
		2030	warn "can only reload from main coroutine\n";
		2031	return;
		2032	}
1072		2033
1073	$msg->("reloading...");	2034	warn "reloading...";
		2035
		2036	my $guard = freeze_mainloop;
		2037	cf::emergency_save;
1074		2038
1075	eval {	2039	eval {
		2040	# if anything goes wrong in here, we should simply crash as we already saved
		2041
1076	# cancel all watchers	2042	# cancel all watchers
1077	for (Event::all_watchers) {	2043	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;	2044	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}	2045	}
1080		2046
		2047	# cancel all extension coros
		2048	$_->cancel for values %EXT_CORO;
		2049	%EXT_CORO = ();
		2050
1081	# unload all extensions	2051	# unload all extensions
1082	for (@exts) {	2052	for (@exts) {
1083	$msg->("unloading <$_>");	2053	warn "unloading <$_>";
1084	unload_extension $_;	2054	unload_extension $_;
1085	}	2055	}
1086		2056
1087	# unload all modules loaded from $LIBDIR	2057	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {	2058	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2059	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090		2060
1091	$msg->("removing <$k>");	2061	warn "removing <$k>";
1092	delete $INC{$k};	2062	delete $INC{$k};
1093		2063
1094	$k =~ s/\.pm$//;	2064	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;	2065	$k =~ s/\//::/g;
1096		2066
…		…
1101	Symbol::delete_package $k;	2071	Symbol::delete_package $k;
1102	}	2072	}
1103		2073
1104	# sync database to disk	2074	# sync database to disk
1105	cf::db_sync;	2075	cf::db_sync;
		2076	IO::AIO::flush;
1106		2077
1107	# get rid of safe::, as good as possible	2078	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"	2079	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2080	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1110		2081
1111	# remove register_script_function callbacks	2082	# remove register_script_function callbacks
1112	# TODO	2083	# TODO
1113		2084
1114	# unload cf.pm "a bit"	2085	# unload cf.pm "a bit"
…		…
1117	# don't, removes xs symbols, too,	2088	# don't, removes xs symbols, too,
1118	# and global variables created in xs	2089	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;	2090	#Symbol::delete_package __PACKAGE__;
1120		2091
1121	# reload cf.pm	2092	# reload cf.pm
1122	$msg->("reloading cf.pm");	2093	warn "reloading cf.pm";
1123	require cf;	2094	require cf;
		2095	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1124		2096
1125	# load config and database again	2097	# load config and database again
1126	cf::cfg_load;	2098	cf::cfg_load;
1127	cf::db_load;	2099	cf::db_load;
1128		2100
1129	# load extensions	2101	# load extensions
1130	$msg->("load extensions");	2102	warn "load extensions";
1131	cf::load_extensions;	2103	cf::load_extensions;
1132		2104
1133	# reattach attachments to objects	2105	# reattach attachments to objects
1134	$msg->("reattach");	2106	warn "reattach";
1135	_global_reattach;	2107	_global_reattach;
1136	};	2108	};
1137	$msg->($@) if $@;
1138		2109
1139	$msg->("reloaded");	2110	if ($@) {
		2111	warn $@;
		2112	warn "error while reloading, exiting.";
		2113	exit 1;
		2114	}
		2115
		2116	warn "reloaded successfully";
1140	};	2117	};
1141		2118
1142	sub perl_reload() {	2119	#############################################################################
1143	_perl_reload {	2120
1144	warn $_[0];	2121	unless ($LINK_MAP) {
1145	print "$_[0]\n";	2122	$LINK_MAP = cf::map::new;
1146	};	2123
		2124	$LINK_MAP->width (41);
		2125	$LINK_MAP->height (41);
		2126	$LINK_MAP->alloc;
		2127	$LINK_MAP->path ("{link}");
		2128	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2129	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2130
		2131	# dirty hack because... archetypes are not yet loaded
		2132	Event->timer (
		2133	after => 10,
		2134	cb => sub {
		2135	$_[0]->w->cancel;
		2136
		2137	# provide some exits "home"
		2138	my $exit = cf::object::new "exit";
		2139
		2140	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2141	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2142	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2143
		2144	$LINK_MAP->insert ($exit->clone, 19, 19);
		2145	$LINK_MAP->insert ($exit->clone, 19, 20);
		2146	$LINK_MAP->insert ($exit->clone, 19, 21);
		2147	$LINK_MAP->insert ($exit->clone, 20, 19);
		2148	$LINK_MAP->insert ($exit->clone, 20, 21);
		2149	$LINK_MAP->insert ($exit->clone, 21, 19);
		2150	$LINK_MAP->insert ($exit->clone, 21, 20);
		2151	$LINK_MAP->insert ($exit->clone, 21, 21);
		2152
		2153	$exit->destroy;
		2154	});
		2155
		2156	$LINK_MAP->{deny_save} = 1;
		2157	$LINK_MAP->{deny_reset} = 1;
		2158
		2159	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1147	}	2160	}
1148		2161
1149	register "<global>", __PACKAGE__;	2162	register "<global>", __PACKAGE__;
1150		2163
1151	register_command "perl-reload" => sub {	2164	register_command "reload" => sub {
1152	my ($who, $arg) = @_;	2165	my ($who, $arg) = @_;
1153		2166
1154	if ($who->flag (FLAG_WIZ)) {	2167	if ($who->flag (FLAG_WIZ)) {
1155	_perl_reload {	2168	$who->message ("start of reload.");
1156	warn $_[0];	2169	reload;
1157	$who->message ($_[0]);	2170	$who->message ("end of reload.");
1158	};
1159	}	2171	}
1160	};	2172	};
1161		2173
1162	unshift @INC, $LIBDIR;	2174	unshift @INC, $LIBDIR;
1163		2175
1164	$TICK_WATCHER = Event->timer (	2176	$TICK_WATCHER = Event->timer (
		2177	reentrant => 0,
1165	prio => 0,	2178	prio => 0,
1166	at => $NEXT_TICK || 1,	2179	at => $NEXT_TICK || $TICK,
1167	data => WF_AUTOCANCEL,	2180	data => WF_AUTOCANCEL,
1168	cb => sub {	2181	cb => sub {
1169	cf::server_tick; # one server iteration	2182	cf::server_tick; # one server iteration
1170		2183	$RUNTIME += $TICK;
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;	2184	$NEXT_TICK += $TICK;
1173		2185
1174	# if we are delayed by four ticks or more, skip them all	2186	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2187	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1176		2188
1177	$TICK_WATCHER->at ($NEXT_TICK);	2189	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;	2190	$TICK_WATCHER->start;
1179	},	2191	},
1180	);	2192	);
1181		2193
1182	IO::AIO::max_poll_time $TICK * 0.2;	2194	IO::AIO::max_poll_time $TICK * 0.2;
1183		2195
		2196	Event->io (
1184	Event->io (fd => IO::AIO::poll_fileno,	2197	fd => IO::AIO::poll_fileno,
1185	poll => 'r',	2198	poll => 'r',
1186	prio => 5,	2199	prio => 5,
1187	data => WF_AUTOCANCEL,	2200	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);	2201	cb => \&IO::AIO::poll_cb,
		2202	);
		2203
		2204	Event->timer (
		2205	data => WF_AUTOCANCEL,
		2206	after => 0,
		2207	interval => 10,
		2208	cb => sub {
		2209	(Coro::unblock_sub {
		2210	write_runtime
		2211	or warn "ERROR: unable to write runtime file: $!";
		2212	})->();
		2213	},
		2214	);
		2215
		2216	END { cf::emergency_save }
1189		2217
1190	1	2218	1
1191		2219

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