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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 1.134 by root, Thu Jan 4 17:28:49 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 (2); # 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 my $guard = cf::guard { BLOCK }
		185
		186	Run the given callback when the guard object gets destroyed (useful for
		187	coroutine cancellations).
		188
		189	You can call C<< ->cancel >> on the guard object to stop the block from
		190	being executed.
		191
		192	=cut
		193
		194	sub guard(&) {
		195	bless \(my $cb = $_[0]), cf::guard::;
		196	}
		197
		198	sub cf::guard::cancel {
		199	${$_[0]} = sub { };
		200	}
		201
		202	sub cf::guard::DESTROY {
		203	${$_[0]}->();
		204	}
		205
		206	=item cf::lock_wait $string
		207
		208	Wait until the given lock is available. See cf::lock_acquire.
		209
		210	=item my $lock = cf::lock_acquire $string
		211
		212	Wait until the given lock is available and then acquires it and returns
		213	a guard object. If the guard object gets destroyed (goes out of scope,
		214	for example when the coroutine gets canceled), the lock is automatically
		215	returned.
		216
		217	Lock names should begin with a unique identifier (for example, cf::map::find
		218	uses map_find and cf::map::load uses map_load).
		219
		220	=cut
		221
		222	our %LOCK;
		223
		224	sub lock_wait($) {
		225	my ($key) = @_;
		226
		227	# wait for lock, if any
		228	while ($LOCK{$key}) {
		229	push @{ $LOCK{$key} }, $Coro::current;
		230	Coro::schedule;
		231	}
		232	}
		233
		234	sub lock_acquire($) {
		235	my ($key) = @_;
		236
		237	# wait, to be sure we are not locked
		238	lock_wait $key;
		239
		240	$LOCK{$key} = [];
		241
		242	cf::guard {
		243	# wake up all waiters, to be on the safe side
		244	$_->ready for @{ delete $LOCK{$key} };
		245	}
		246	}
		247
		248	=item cf::async { BLOCK }
		249
		250	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		251	error instead of exiting the server in case of a problem.
		252
		253	=cut
		254
		255	sub async(&) {
		256	my ($cb) = @_;
		257
		258	Coro::async {
		259	eval { $cb->() };
		260	warn $@ if $@;
		261	}
		262	}
		263
		264	sub freeze_mainloop {
		265	return unless $TICK_WATCHER->is_active;
		266
		267	my $guard = guard { $TICK_WATCHER->start };
		268	$TICK_WATCHER->stop;
		269	$guard
		270	}
		271
		272	=item cf::sync_job { BLOCK }
		273
		274	The design of crossfire+ requires that the main coro ($Coro::main) is
		275	always able to handle events or runnable, as crossfire+ is only partly
		276	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		277
		278	If it must be done, put the blocking parts into C<sync_job>. This will run
		279	the given BLOCK in another coroutine while waiting for the result. The
		280	server will be frozen during this time, so the block should either finish
		281	fast or be very important.
		282
		283	=cut
		284
		285	sub sync_job(&) {
		286	my ($job) = @_;
		287
		288	if ($Coro::current == $Coro::main) {
		289	# this is the main coro, too bad, we have to block
		290	# till the operation succeeds, freezing the server :/
		291
		292	# TODO: use suspend/resume instead
		293	# (but this is cancel-safe)
		294	my $freeze_guard = freeze_mainloop;
		295
		296	my $busy = 1;
		297	my @res;
		298
		299	(Coro::async {
		300	@res = eval { $job->() };
		301	warn $@ if $@;
		302	undef $busy;
		303	})->prio (Coro::PRIO_MAX);
		304
		305	while ($busy) {
		306	Coro::cede_notself;
		307	Event::one_event unless Coro::nready;
		308	}
		309
		310	wantarray ? @res : $res[0]
		311	} else {
		312	# we are in another coroutine, how wonderful, everything just works
		313
		314	$job->()
		315	}
		316	}
		317
		318	=item $coro = cf::coro { BLOCK }
		319
		320	Creates and returns a new coro. This coro is automcatially being canceled
		321	when the extension calling this is being unloaded.
		322
		323	=cut
		324
		325	sub coro(&) {
		326	my $cb = shift;
		327
		328	my $coro = &cf::async ($cb);
		329
		330	$coro->on_destroy (sub {
		331	delete $EXT_CORO{$coro+0};
		332	});
		333	$EXT_CORO{$coro+0} = $coro;
		334
		335	$coro
		336	}
		337
		338	sub write_runtime {
		339	my $runtime = cf::localdir . "/runtime";
		340
		341	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		342	or return;
		343
		344	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		345	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		346	and return;
		347
		348	aio_fsync $fh
		349	and return;
		350
		351	close $fh
		352	or return;
		353
		354	aio_rename "$runtime~", $runtime
		355	and return;
		356
		357	1
		358	}
		359
137	=back	360	=back
138		361
139	=cut	362	=cut
		363
		364	#############################################################################
		365
		366	package cf::path;
		367
		368	sub new {
		369	my ($class, $path, $base) = @_;
		370
		371	$path = $path->as_string if ref $path;
		372
		373	my $self = bless { }, $class;
		374
		375	# {... are special paths that are not touched
		376	# ?xxx/... are special absolute paths
		377	# ?random/... random maps
		378	# /! non-realised random map exit
		379	# /... normal maps
		380	# ~/... per-player maps without a specific player (DO NOT USE)
		381	# ~user/... per-player map of a specific user
		382
		383	if ($path =~ /^{/) {
		384	# fine as it is
		385	} elsif ($path =~ s{^\?random/}{}) {
		386	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		387	$self->{random} = cf::from_json $data;
		388	} else {
		389	if ($path =~ s{^~([^/]+)?}{}) {
		390	$self->{user_rel} = 1;
		391
		392	if (defined $1) {
		393	$self->{user} = $1;
		394	} elsif ($base =~ m{^~([^/]+)/}) {
		395	$self->{user} = $1;
		396	} else {
		397	warn "cannot resolve user-relative path without user <$path,$base>\n";
		398	}
		399	} elsif ($path =~ /^\//) {
		400	# already absolute
		401	} else {
		402	$base =~ s{[^/]+/?$}{};
		403	return $class->new ("$base/$path");
		404	}
		405
		406	for ($path) {
		407	redo if s{/\.?/}{/};
		408	redo if s{/[^/]+/\.\./}{/};
		409	}
		410	}
		411
		412	$self->{path} = $path;
		413
		414	$self
		415	}
		416
		417	# the name / primary key / in-game path
		418	sub as_string {
		419	my ($self) = @_;
		420
		421	$self->{user_rel} ? "~$self->{user}$self->{path}"
		422	: $self->{random} ? "?random/$self->{path}"
		423	: $self->{path}
		424	}
		425
		426	# the displayed name, this is a one way mapping
		427	sub visible_name {
		428	my ($self) = @_;
		429
		430	# if (my $rmp = $self->{random}) {
		431	# # todo: be more intelligent about this
		432	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		433	# } else {
		434	$self->as_string
		435	# }
		436	}
		437
		438	# escape the /'s in the path
		439	sub _escaped_path {
		440	# ∕ is U+2215
		441	(my $path = $_[0]{path}) =~ s/\//∕/g;
		442	$path
		443	}
		444
		445	# the original (read-only) location
		446	sub load_path {
		447	my ($self) = @_;
		448
		449	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		450	}
		451
		452	# the temporary/swap location
		453	sub save_path {
		454	my ($self) = @_;
		455
		456	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		457	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		458	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		459	}
		460
		461	# the unique path, might be eq to save_path
		462	sub uniq_path {
		463	my ($self) = @_;
		464
		465	$self->{user_rel} || $self->{random}
		466	? undef
		467	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		468	}
		469
		470	# return random map parameters, or undef
		471	sub random_map_params {
		472	my ($self) = @_;
		473
		474	$self->{random}
		475	}
		476
		477	# this is somewhat ugly, but style maps do need special treatment
		478	sub is_style_map {
		479	$_[0]{path} =~ m{^/styles/}
		480	}
		481
		482	package cf;
140		483
141	#############################################################################	484	#############################################################################
142		485
143	=head2 ATTACHABLE OBJECTS	486	=head2 ATTACHABLE OBJECTS
144		487
…		…
249	my ($self, $victim) = @_;	592	my ($self, $victim) = @_;
250	...	593	...
251	}	594	}
252	}	595	}
253		596
		597	=item $attachable->valid
		598
		599	Just because you have a perl object does not mean that the corresponding
		600	C-level object still exists. If you try to access an object that has no
		601	valid C counterpart anymore you get an exception at runtime. This method
		602	can be used to test for existence of the C object part without causing an
		603	exception.
		604
254	=cut	605	=cut
255		606
256	# the following variables are defined in .xs and must not be re-created	607	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	608	our @CB_GLOBAL = (); # registry for all global events
		609	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	610	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	611	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	612	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	613	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	614	our @CB_MAP = ();
263		615
264	my %attachment;	616	my %attachment;
265		617
266	sub _attach_cb($$$$) {	618	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	619	my ($registry, $event, $prio, $cb) = @_;
…		…
272		624
273	@{$registry->[$event]} = sort	625	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	626	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	627	@{$registry->[$event] || []}, $cb;
276	}	628	}
		629
		630	# hack
		631	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		632
278	# attach handles attaching event callbacks	633	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	634	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	635	# registry (== where the callback attaches to).
281	sub _attach {	636	sub _attach {
…		…
283		638
284	my $object_type;	639	my $object_type;
285	my $prio = 0;	640	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	641	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		642
		643	#TODO: get rid of this hack
		644	if ($attachable_klass{$klass}) {
		645	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		646	}
		647
288	while (@arg) {	648	while (@arg) {
289	my $type = shift @arg;	649	my $type = shift @arg;
290		650
291	if ($type eq "prio") {	651	if ($type eq "prio") {
292	$prio = shift @arg;	652	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	727	my ($obj, $name) = @_;
368		728
369	exists $obj->{_attachment}{$name}	729	exists $obj->{_attachment}{$name}
370	}	730	}
371		731
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	732	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	733	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	734	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	735	(\\\@CB_$klass, KLASS_$klass)
376	}	736	}
377		737
…		…
413	}	773	}
414		774
415	0	775	0
416	}	776	}
417		777
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	778	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		779
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, ...)	780	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		781
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	782	Generate an object-specific event with the given arguments.
429		783
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	784	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	785	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	786	results (if you must, access C<@cf::invoke_results> directly).
433		787
434	=back	788	=back
435		789
436	=cut	790	=cut
437		791
438	#############################################################################	792	#############################################################################
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	793	# object support
460		794
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 {	795	sub reattach {
		796	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	797	my ($obj) = @_;
		798
476	my $registry = $obj->registry;	799	my $registry = $obj->registry;
477		800
478	@$registry = ();	801	@$registry = ();
479		802
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	803	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	812	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	813	}
491	}	814	}
492	}	815	}
493		816
494	sub object_freezer_save {	817	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	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	818	prio => -1000000,
		819	on_instantiate => sub {
		820	my ($obj, $data) = @_;
		821
		822	$data = from_json $data;
		823
		824	for (@$data) {
		825	my ($name, $args) = @$_;
		826
		827	$obj->attach ($name, %{$args || {} });
		828	}
		829	},
		830	on_reattach => \&reattach,
554	on_clone => sub {	831	on_clone => sub {
555	my ($src, $dst) = @_;	832	my ($src, $dst) = @_;
556		833
557	@{$dst->registry} = @{$src->registry};	834	@{$dst->registry} = @{$src->registry};
558		835
…		…
560		837
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	838	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	839	if exists $src->{_attachment};
563	},	840	},
564	);	841	);
		842
		843	sub object_freezer_save {
		844	my ($filename, $rdata, $objs) = @_;
		845
		846	sync_job {
		847	if (length $$rdata) {
		848	warn sprintf "saving %s (%d,%d)\n",
		849	$filename, length $$rdata, scalar @$objs;
		850
		851	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		852	chmod SAVE_MODE, $fh;
		853	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		854	aio_fsync $fh;
		855	close $fh;
		856
		857	if (@$objs) {
		858	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		859	chmod SAVE_MODE, $fh;
		860	my $data = Storable::nfreeze { version => 1, objs => $objs };
		861	aio_write $fh, 0, (length $data), $data, 0;
		862	aio_fsync $fh;
		863	close $fh;
		864	aio_rename "$filename.pst~", "$filename.pst";
		865	}
		866	} else {
		867	aio_unlink "$filename.pst";
		868	}
		869
		870	aio_rename "$filename~", $filename;
		871	} else {
		872	warn "FATAL: $filename~: $!\n";
		873	}
		874	} else {
		875	aio_unlink $filename;
		876	aio_unlink "$filename.pst";
		877	}
		878	}
		879	}
		880
		881	sub object_freezer_as_string {
		882	my ($rdata, $objs) = @_;
		883
		884	use Data::Dumper;
		885
		886	$$rdata . Dumper $objs
		887	}
		888
		889	sub object_thawer_load {
		890	my ($filename) = @_;
		891
		892	my ($data, $av);
		893
		894	(aio_load $filename, $data) >= 0
		895	or return;
		896
		897	unless (aio_stat "$filename.pst") {
		898	(aio_load "$filename.pst", $av) >= 0
		899	or return;
		900	$av = eval { (Storable::thaw $av)->{objs} };
		901	}
		902
		903	warn sprintf "loading %s (%d)\n",
		904	$filename, length $data, scalar @{$av || []};#d#
		905	return ($data, $av);
		906	}
565		907
566	#############################################################################	908	#############################################################################
567	# command handling &c	909	# command handling &c
568		910
569	=item cf::register_command $name => \&callback($ob,$args);	911	=item cf::register_command $name => \&callback($ob,$args);
…		…
758		1100
759	=head2 CORE EXTENSIONS	1101	=head2 CORE EXTENSIONS
760		1102
761	Functions and methods that extend core crossfire objects.	1103	Functions and methods that extend core crossfire objects.
762		1104
		1105	=head3 cf::player
		1106
763	=over 4	1107	=over 4
764		1108
765	=item cf::player::exists $login	1109	=item cf::player::exists $login
766		1110
767	Returns true when the given account exists.	1111	Returns true when the given account exists.
…		…
771	sub cf::player::exists($) {	1115	sub cf::player::exists($) {
772	cf::player::find $_[0]	1116	cf::player::find $_[0]
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1117	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
774	}	1118	}
775		1119
		1120	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1121
		1122	Sends an ext reply to the player.
		1123
		1124	=cut
		1125
		1126	sub cf::player::ext_reply($$$%) {
		1127	my ($self, $id, %msg) = @_;
		1128
		1129	$msg{msgid} = $id;
		1130
		1131	$self->send ("ext " . to_json \%msg);
		1132	}
		1133
		1134	=back
		1135
		1136
		1137	=head3 cf::map
		1138
		1139	=over 4
		1140
		1141	=cut
		1142
		1143	package cf::map;
		1144
		1145	use Fcntl;
		1146	use Coro::AIO;
		1147
		1148	our $MAX_RESET = 3600;
		1149	our $DEFAULT_RESET = 3000;
		1150
		1151	sub generate_random_map {
		1152	my ($path, $rmp) = @_;
		1153
		1154	# mit "rum" bekleckern, nicht
		1155	cf::map::_create_random_map
		1156	$path,
		1157	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1158	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1159	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1160	$rmp->{exit_on_final_map},
		1161	$rmp->{xsize}, $rmp->{ysize},
		1162	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1163	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1164	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1165	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1166	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1167	(cf::region::find $rmp->{region})
		1168	}
		1169
		1170	# and all this just because we cannot iterate over
		1171	# all maps in C++...
		1172	sub change_all_map_light {
		1173	my ($change) = @_;
		1174
		1175	$_->change_map_light ($change)
		1176	for grep $_->outdoor, values %cf::MAP;
		1177	}
		1178
		1179	sub try_load_header($) {
		1180	my ($path) = @_;
		1181
		1182	utf8::encode $path;
		1183	aio_open $path, O_RDONLY, 0
		1184	or return;
		1185
		1186	my $map = cf::map::new
		1187	or return;
		1188
		1189	$map->load_header ($path)
		1190	or return;
		1191
		1192	$map->{load_path} = $path;
		1193
		1194	$map
		1195	}
		1196
		1197	sub find;
		1198	sub find {
		1199	my ($path, $origin) = @_;
		1200
		1201	#warn "find<$path,$origin>\n";#d#
		1202
		1203	$path = new cf::path $path, $origin && $origin->path;
		1204	my $key = $path->as_string;
		1205
		1206	cf::lock_wait "map_find:$key";
		1207
		1208	$cf::MAP{$key} || do {
		1209	my $guard = cf::lock_acquire "map_find:$key";
		1210
		1211	# do it the slow way
		1212	my $map = try_load_header $path->save_path;
		1213
		1214	Coro::cede;
		1215
		1216	if ($map) {
		1217	$map->last_access ((delete $map->{last_access})
		1218	|| $cf::RUNTIME); #d#
		1219	# safety
		1220	$map->{instantiate_time} = $cf::RUNTIME
		1221	if $map->{instantiate_time} > $cf::RUNTIME;
		1222	} else {
		1223	if (my $rmp = $path->random_map_params) {
		1224	$map = generate_random_map $key, $rmp;
		1225	} else {
		1226	$map = try_load_header $path->load_path;
		1227	}
		1228
		1229	$map or return;
		1230
		1231	$map->{load_original} = 1;
		1232	$map->{instantiate_time} = $cf::RUNTIME;
		1233	$map->last_access ($cf::RUNTIME);
		1234	$map->instantiate;
		1235
		1236	# per-player maps become, after loading, normal maps
		1237	$map->per_player (0) if $path->{user_rel};
		1238	}
		1239
		1240	$map->path ($key);
		1241	$map->{path} = $path;
		1242	$map->{last_save} = $cf::RUNTIME;
		1243
		1244	Coro::cede;
		1245
		1246	if ($map->should_reset) {
		1247	$map->reset;
		1248	undef $guard;
		1249	$map = find $path
		1250	or return;
		1251	}
		1252
		1253	$cf::MAP{$key} = $map
		1254	}
		1255	}
		1256
		1257	sub load {
		1258	my ($self) = @_;
		1259
		1260	my $path = $self->{path};
		1261	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1262
		1263	return if $self->in_memory != cf::MAP_SWAPPED;
		1264
		1265	$self->in_memory (cf::MAP_LOADING);
		1266
		1267	$self->alloc;
		1268	$self->load_objects ($self->{load_path}, 1)
		1269	or return;
		1270
		1271	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1272	if delete $self->{load_original};
		1273
		1274	if (my $uniq = $path->uniq_path) {
		1275	utf8::encode $uniq;
		1276	if (aio_open $uniq, O_RDONLY, 0) {
		1277	$self->clear_unique_items;
		1278	$self->load_objects ($uniq, 0);
		1279	}
		1280	}
		1281
		1282	Coro::cede;
		1283
		1284	# now do the right thing for maps
		1285	$self->link_multipart_objects;
		1286
		1287	if ($self->{path}->is_style_map) {
		1288	$self->{deny_save} = 1;
		1289	$self->{deny_reset} = 1;
		1290	} else {
		1291	$self->fix_auto_apply;
		1292	$self->decay_objects;
		1293	$self->update_buttons;
		1294	$self->set_darkness_map;
		1295	$self->difficulty ($self->estimate_difficulty)
		1296	unless $self->difficulty;
		1297	$self->activate;
		1298	}
		1299
		1300	Coro::cede;
		1301
		1302	$self->in_memory (cf::MAP_IN_MEMORY);
		1303	}
		1304
		1305	sub find_sync {
		1306	my ($path, $origin) = @_;
		1307
		1308	cf::sync_job { cf::map::find $path, $origin }
		1309	}
		1310
		1311	sub do_load_sync {
		1312	my ($map) = @_;
		1313
		1314	cf::sync_job { $map->load };
		1315	}
		1316
		1317	sub save {
		1318	my ($self) = @_;
		1319
		1320	$self->{last_save} = $cf::RUNTIME;
		1321
		1322	return unless $self->dirty;
		1323
		1324	my $save = $self->{path}->save_path; utf8::encode $save;
		1325	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1326
		1327	$self->{load_path} = $save;
		1328
		1329	return if $self->{deny_save};
		1330
		1331	local $self->{last_access} = $self->last_access;#d#
		1332
		1333	if ($uniq) {
		1334	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1335	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1336	} else {
		1337	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1338	}
		1339	}
		1340
		1341	sub swap_out {
		1342	my ($self) = @_;
		1343
		1344	# save first because save cedes
		1345	$self->save;
		1346
		1347	return if $self->players;
		1348	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1349	return if $self->{deny_save};
		1350
		1351	$self->clear;
		1352	$self->in_memory (cf::MAP_SWAPPED);
		1353	}
		1354
		1355	sub reset_at {
		1356	my ($self) = @_;
		1357
		1358	# TODO: safety, remove and allow resettable per-player maps
		1359	return 1e99 if $self->{path}{user_rel};
		1360	return 1e99 if $self->{deny_reset};
		1361
		1362	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1363	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1364
		1365	$time + $to
		1366	}
		1367
		1368	sub should_reset {
		1369	my ($self) = @_;
		1370
		1371	$self->reset_at <= $cf::RUNTIME
		1372	}
		1373
		1374	sub unlink_save {
		1375	my ($self) = @_;
		1376
		1377	utf8::encode (my $save = $self->{path}->save_path);
		1378	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1379	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1380	}
		1381
		1382	sub rename {
		1383	my ($self, $new_path) = @_;
		1384
		1385	$self->unlink_save;
		1386
		1387	delete $cf::MAP{$self->path};
		1388	$self->{path} = new cf::path $new_path;
		1389	$self->path ($self->{path}->as_string);
		1390	$cf::MAP{$self->path} = $self;
		1391
		1392	$self->save;
		1393	}
		1394
		1395	sub reset {
		1396	my ($self) = @_;
		1397
		1398	return if $self->players;
		1399	return if $self->{path}{user_rel};#d#
		1400
		1401	warn "resetting map ", $self->path;#d#
		1402
		1403	delete $cf::MAP{$self->path};
		1404
		1405	$_->clear_links_to ($self) for values %cf::MAP;
		1406
		1407	$self->unlink_save;
		1408	$self->destroy;
		1409	}
		1410
		1411	my $nuke_counter = "aaaa";
		1412
		1413	sub nuke {
		1414	my ($self) = @_;
		1415
		1416	$self->{deny_save} = 1;
		1417	$self->reset_timeout (1);
		1418	$self->rename ("{nuke}/" . ($nuke_counter++));
		1419	$self->reset; # polite request, might not happen
		1420	}
		1421
		1422	sub customise_for {
		1423	my ($map, $ob) = @_;
		1424
		1425	if ($map->per_player) {
		1426	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1427	}
		1428
		1429	$map
		1430	}
		1431
		1432	sub emergency_save {
		1433	my $freeze_guard = cf::freeze_mainloop;
		1434
		1435	warn "enter emergency map save\n";
		1436
		1437	cf::sync_job {
		1438	warn "begin emergency map save\n";
		1439	$_->save for values %cf::MAP;
		1440	};
		1441
		1442	warn "end emergency map save\n";
		1443	}
		1444
		1445	package cf;
		1446
		1447	=back
		1448
		1449
		1450	=head3 cf::object::player
		1451
		1452	=over 4
		1453
776	=item $player_object->reply ($npc, $msg[, $flags])	1454	=item $player_object->reply ($npc, $msg[, $flags])
777		1455
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1456	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	1457	can be C<undef>. Does the right thing when the player is currently in a
780	dialogue with the given NPC character.	1458	dialogue with the given NPC character.
781		1459
782	=cut	1460	=cut
783		1461
784	# rough implementation of a future "reply" method that works	1462	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	1463	# with dialog boxes.
		1464	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	1465	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	1466	my ($self, $npc, $msg, $flags) = @_;
788		1467
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1468	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		1469
…		…
794	$msg = $npc->name . " says: $msg" if $npc;	1473	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	1474	$self->message ($msg, $flags);
796	}	1475	}
797	}	1476	}
798		1477
799	=item $player->ext_reply ($msgid, $msgtype, %msg)
800
801	Sends an ext reply to the player.
802
803	=cut
804
805	sub cf::player::ext_reply($$$%) {
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")	1478	=item $player_object->may ("access")
814		1479
815	Returns wether the given player is authorized to access resource "access"	1480	Returns wether the given player is authorized to access resource "access"
816	(e.g. "command_wizcast").	1481	(e.g. "command_wizcast").
817		1482
…		…
824	(ref $cf::CFG{"may_$access"}	1489	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1490	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1491	: $cf::CFG{"may_$access"})
827	}	1492	}
828		1493
829	=cut	1494	=item $player_object->enter_link
830		1495
831	#############################################################################	1496	Freezes the player and moves him/her to a special map (C<{link}>).
		1497
		1498	The player should be reaosnably safe there for short amounts of time. You
		1499	I<MUST> call C<leave_link> as soon as possible, though.
		1500
		1501	=item $player_object->leave_link ($map, $x, $y)
		1502
		1503	Moves the player out of the specila link map onto the given map. If the
		1504	map is not valid (or omitted), the player will be moved back to the
		1505	location he/she was before the call to C<enter_link>, or, if that fails,
		1506	to the emergency map position.
		1507
		1508	Might block.
		1509
		1510	=cut
		1511
		1512	sub cf::object::player::enter_link {
		1513	my ($self) = @_;
		1514
		1515	$self->deactivate_recursive;
		1516
		1517	return if $self->map == $LINK_MAP;
		1518
		1519	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1520	if $self->map;
		1521
		1522	$self->enter_map ($LINK_MAP, 20, 20);
		1523	}
		1524
		1525	sub cf::object::player::leave_link {
		1526	my ($self, $map, $x, $y) = @_;
		1527
		1528	my $link_pos = delete $self->{_link_pos};
		1529
		1530	unless ($map) {
		1531	# restore original map position
		1532	($map, $x, $y) = @{ $link_pos || [] };
		1533	$map = cf::map::find $map;
		1534
		1535	unless ($map) {
		1536	($map, $x, $y) = @$EMERGENCY_POSITION;
		1537	$map = cf::map::find $map
		1538	or die "FATAL: cannot load emergency map\n";
		1539	}
		1540	}
		1541
		1542	($x, $y) = (-1, -1)
		1543	unless (defined $x) && (defined $y);
		1544
		1545	# use -1 or undef as default coordinates, not 0, 0
		1546	($x, $y) = ($map->enter_x, $map->enter_y)
		1547	if $x <=0 && $y <= 0;
		1548
		1549	$map->load;
		1550
		1551	$self->activate_recursive;
		1552	$self->enter_map ($map, $x, $y);
		1553	}
		1554
		1555	cf::player->attach (
		1556	on_logout => sub {
		1557	my ($pl) = @_;
		1558
		1559	# abort map switching before logout
		1560	if ($pl->ob->{_link_pos}) {
		1561	cf::sync_job {
		1562	$pl->ob->leave_link
		1563	};
		1564	}
		1565	},
		1566	on_login => sub {
		1567	my ($pl) = @_;
		1568
		1569	# try to abort aborted map switching on player login :)
		1570	# should happen only on crashes
		1571	if ($pl->ob->{_link_pos}) {
		1572	$pl->ob->enter_link;
		1573	cf::async {
		1574	# we need this sleep as the login has a concurrent enter_exit running
		1575	# and this sleep increases chances of the player not ending up in scorn
		1576	Coro::Timer::sleep 1;
		1577	$pl->ob->leave_link;
		1578	};
		1579	}
		1580	},
		1581	);
		1582
		1583	=item $player_object->goto_map ($path, $x, $y)
		1584
		1585	=cut
		1586
		1587	sub cf::object::player::goto_map {
		1588	my ($self, $path, $x, $y) = @_;
		1589
		1590	$self->enter_link;
		1591
		1592	(cf::async {
		1593	$path = new cf::path $path;
		1594
		1595	my $map = cf::map::find $path->as_string;
		1596	$map = $map->customise_for ($self) if $map;
		1597
		1598	# warn "entering ", $map->path, " at ($x, $y)\n"
		1599	# if $map;
		1600
		1601	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1602
		1603	$self->leave_link ($map, $x, $y);
		1604	})->prio (1);
		1605	}
		1606
		1607	=item $player_object->enter_exit ($exit_object)
		1608
		1609	=cut
		1610
		1611	sub parse_random_map_params {
		1612	my ($spec) = @_;
		1613
		1614	my $rmp = { # defaults
		1615	xsize => 10,
		1616	ysize => 10,
		1617	};
		1618
		1619	for (split /\n/, $spec) {
		1620	my ($k, $v) = split /\s+/, $_, 2;
		1621
		1622	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1623	}
		1624
		1625	$rmp
		1626	}
		1627
		1628	sub prepare_random_map {
		1629	my ($exit) = @_;
		1630
		1631	# all this does is basically replace the /! path by
		1632	# a new random map path (?random/...) with a seed
		1633	# that depends on the exit object
		1634
		1635	my $rmp = parse_random_map_params $exit->msg;
		1636
		1637	if ($exit->map) {
		1638	$rmp->{region} = $exit->map->region_name;
		1639	$rmp->{origin_map} = $exit->map->path;
		1640	$rmp->{origin_x} = $exit->x;
		1641	$rmp->{origin_y} = $exit->y;
		1642	}
		1643
		1644	$rmp->{random_seed} ||= $exit->random_seed;
		1645
		1646	my $data = cf::to_json $rmp;
		1647	my $md5 = Digest::MD5::md5_hex $data;
		1648
		1649	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1650	aio_write $fh, 0, (length $data), $data, 0;
		1651
		1652	$exit->slaying ("?random/$md5");
		1653	$exit->msg (undef);
		1654	}
		1655	}
		1656
		1657	sub cf::object::player::enter_exit {
		1658	my ($self, $exit) = @_;
		1659
		1660	return unless $self->type == cf::PLAYER;
		1661
		1662	$self->enter_link;
		1663
		1664	(cf::async {
		1665	$self->deactivate_recursive; # just to be sure
		1666	unless (eval {
		1667	prepare_random_map $exit
		1668	if $exit->slaying eq "/!";
		1669
		1670	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1671	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1672
		1673	1;
		1674	}) {
		1675	$self->message ("Something went wrong deep within the crossfire server. "
		1676	. "I'll try to bring you back to the map you were before. "
		1677	. "Please report this to the dungeon master",
		1678	cf::NDI_UNIQUE | cf::NDI_RED);
		1679
		1680	warn "ERROR in enter_exit: $@";
		1681	$self->leave_link;
		1682	}
		1683	})->prio (1);
		1684	}
		1685
		1686	=head3 cf::client
		1687
		1688	=over 4
		1689
		1690	=item $client->send_drawinfo ($text, $flags)
		1691
		1692	Sends a drawinfo packet to the client. Circumvents output buffering so
		1693	should not be used under normal circumstances.
		1694
		1695	=cut
		1696
		1697	sub cf::client::send_drawinfo {
		1698	my ($self, $text, $flags) = @_;
		1699
		1700	utf8::encode $text;
		1701	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1702	}
		1703
		1704
		1705	=item $success = $client->query ($flags, "text", \&cb)
		1706
		1707	Queues a query to the client, calling the given callback with
		1708	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1709	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1710
		1711	Queries can fail, so check the return code. Or don't, as queries will become
		1712	reliable at some point in the future.
		1713
		1714	=cut
		1715
		1716	sub cf::client::query {
		1717	my ($self, $flags, $text, $cb) = @_;
		1718
		1719	return unless $self->state == ST_PLAYING
		1720	|| $self->state == ST_SETUP
		1721	|| $self->state == ST_CUSTOM;
		1722
		1723	$self->state (ST_CUSTOM);
		1724
		1725	utf8::encode $text;
		1726	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1727
		1728	$self->send_packet ($self->{query_queue}[0][0])
		1729	if @{ $self->{query_queue} } == 1;
		1730	}
		1731
		1732	cf::client->attach (
		1733	on_reply => sub {
		1734	my ($ns, $msg) = @_;
		1735
		1736	# this weird shuffling is so that direct followup queries
		1737	# get handled first
		1738	my $queue = delete $ns->{query_queue}
		1739	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1740
		1741	(shift @$queue)->[1]->($msg);
		1742
		1743	push @{ $ns->{query_queue} }, @$queue;
		1744
		1745	if (@{ $ns->{query_queue} } == @$queue) {
		1746	if (@$queue) {
		1747	$ns->send_packet ($ns->{query_queue}[0][0]);
		1748	} else {
		1749	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1750	}
		1751	}
		1752	},
		1753	);
		1754
		1755	=item $client->coro (\&cb)
		1756
		1757	Create a new coroutine, running the specified callback. The coroutine will
		1758	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1759	or loss of connection).
		1760
		1761	=cut
		1762
		1763	sub cf::client::coro {
		1764	my ($self, $cb) = @_;
		1765
		1766	my $coro = &cf::async ($cb);
		1767
		1768	$coro->on_destroy (sub {
		1769	delete $self->{_coro}{$coro+0};
		1770	});
		1771
		1772	$self->{_coro}{$coro+0} = $coro;
		1773
		1774	$coro
		1775	}
		1776
		1777	cf::client->attach (
		1778	on_destroy => sub {
		1779	my ($ns) = @_;
		1780
		1781	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1782	},
		1783	);
		1784
		1785	=back
		1786
832		1787
833	=head2 SAFE SCRIPTING	1788	=head2 SAFE SCRIPTING
834		1789
835	Functions that provide a safe environment to compile and execute	1790	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	1791	snippets of perl code without them endangering the safety of the server
…		…
988		1943
989	{	1944	{
990	my $path = cf::localdir . "/database.pst";	1945	my $path = cf::localdir . "/database.pst";
991		1946
992	sub db_load() {	1947	sub db_load() {
993	warn "loading database $path\n";#d# remove later
994	$DB = stat $path ? Storable::retrieve $path : { };	1948	$DB = stat $path ? Storable::retrieve $path : { };
995	}	1949	}
996		1950
997	my $pid;	1951	my $pid;
998		1952
999	sub db_save() {	1953	sub db_save() {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;	1954	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {	1955	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;	1956	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";	1957	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;	1958	rename "$path~", $path;
…		…
1053	open my $fh, "<:utf8", cf::confdir . "/config"	2006	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;	2007	or return;
1055		2008
1056	local $/;	2009	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;	2010	*CFG = YAML::Syck::Load <$fh>;
		2011
		2012	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2013
		2014	if (exists $CFG{mlockall}) {
		2015	eval {
		2016	$CFG{mlockall} ? &mlockall : &munlockall
		2017	and die "WARNING: m(un)lockall failed: $!\n";
		2018	};
		2019	warn $@ if $@;
		2020	}
1058	}	2021	}
1059		2022
1060	sub main {	2023	sub main {
		2024	# we must not ever block the main coroutine
		2025	local $Coro::idle = sub {
		2026	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2027	(Coro::unblock_sub {
		2028	Event::one_event;
		2029	})->();
		2030	};
		2031
1061	cfg_load;	2032	cfg_load;
1062	db_load;	2033	db_load;
1063	load_extensions;	2034	load_extensions;
1064	Event::loop;	2035	Event::loop;
1065	}	2036	}
1066		2037
1067	#############################################################################	2038	#############################################################################
1068	# initialisation	2039	# initialisation
1069		2040
1070	sub _perl_reload(&) {	2041	sub reload() {
1071	my ($msg) = @_;	2042	# can/must only be called in main
		2043	if ($Coro::current != $Coro::main) {
		2044	warn "can only reload from main coroutine\n";
		2045	return;
		2046	}
1072		2047
1073	$msg->("reloading...");	2048	warn "reloading...";
		2049
		2050	my $guard = freeze_mainloop;
		2051	cf::emergency_save;
1074		2052
1075	eval {	2053	eval {
		2054	# if anything goes wrong in here, we should simply crash as we already saved
		2055
1076	# cancel all watchers	2056	# cancel all watchers
1077	for (Event::all_watchers) {	2057	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;	2058	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}	2059	}
1080		2060
		2061	# cancel all extension coros
		2062	$_->cancel for values %EXT_CORO;
		2063	%EXT_CORO = ();
		2064
1081	# unload all extensions	2065	# unload all extensions
1082	for (@exts) {	2066	for (@exts) {
1083	$msg->("unloading <$_>");	2067	warn "unloading <$_>";
1084	unload_extension $_;	2068	unload_extension $_;
1085	}	2069	}
1086		2070
1087	# unload all modules loaded from $LIBDIR	2071	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {	2072	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090		2074
1091	$msg->("removing <$k>");	2075	warn "removing <$k>";
1092	delete $INC{$k};	2076	delete $INC{$k};
1093		2077
1094	$k =~ s/\.pm$//;	2078	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;	2079	$k =~ s/\//::/g;
1096		2080
…		…
1101	Symbol::delete_package $k;	2085	Symbol::delete_package $k;
1102	}	2086	}
1103		2087
1104	# sync database to disk	2088	# sync database to disk
1105	cf::db_sync;	2089	cf::db_sync;
		2090	IO::AIO::flush;
1106		2091
1107	# get rid of safe::, as good as possible	2092	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"	2093	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2094	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1110		2095
1111	# remove register_script_function callbacks	2096	# remove register_script_function callbacks
1112	# TODO	2097	# TODO
1113		2098
1114	# unload cf.pm "a bit"	2099	# unload cf.pm "a bit"
…		…
1117	# don't, removes xs symbols, too,	2102	# don't, removes xs symbols, too,
1118	# and global variables created in xs	2103	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;	2104	#Symbol::delete_package __PACKAGE__;
1120		2105
1121	# reload cf.pm	2106	# reload cf.pm
1122	$msg->("reloading cf.pm");	2107	warn "reloading cf.pm";
1123	require cf;	2108	require cf;
		2109	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1124		2110
1125	# load config and database again	2111	# load config and database again
1126	cf::cfg_load;	2112	cf::cfg_load;
1127	cf::db_load;	2113	cf::db_load;
1128		2114
1129	# load extensions	2115	# load extensions
1130	$msg->("load extensions");	2116	warn "load extensions";
1131	cf::load_extensions;	2117	cf::load_extensions;
1132		2118
1133	# reattach attachments to objects	2119	# reattach attachments to objects
1134	$msg->("reattach");	2120	warn "reattach";
1135	_global_reattach;	2121	_global_reattach;
1136	};	2122	};
1137	$msg->($@) if $@;
1138		2123
1139	$msg->("reloaded");	2124	if ($@) {
		2125	warn $@;
		2126	warn "error while reloading, exiting.";
		2127	exit 1;
		2128	}
		2129
		2130	warn "reloaded successfully";
1140	};	2131	};
1141		2132
1142	sub perl_reload() {	2133	#############################################################################
1143	_perl_reload {	2134
1144	warn $_[0];	2135	unless ($LINK_MAP) {
1145	print "$_[0]\n";	2136	$LINK_MAP = cf::map::new;
1146	};	2137
		2138	$LINK_MAP->width (41);
		2139	$LINK_MAP->height (41);
		2140	$LINK_MAP->alloc;
		2141	$LINK_MAP->path ("{link}");
		2142	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2143	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2144
		2145	# dirty hack because... archetypes are not yet loaded
		2146	Event->timer (
		2147	after => 2,
		2148	cb => sub {
		2149	$_[0]->w->cancel;
		2150
		2151	# provide some exits "home"
		2152	my $exit = cf::object::new "exit";
		2153
		2154	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2155	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2156	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2157
		2158	$LINK_MAP->insert ($exit->clone, 19, 19);
		2159	$LINK_MAP->insert ($exit->clone, 19, 20);
		2160	$LINK_MAP->insert ($exit->clone, 19, 21);
		2161	$LINK_MAP->insert ($exit->clone, 20, 19);
		2162	$LINK_MAP->insert ($exit->clone, 20, 21);
		2163	$LINK_MAP->insert ($exit->clone, 21, 19);
		2164	$LINK_MAP->insert ($exit->clone, 21, 20);
		2165	$LINK_MAP->insert ($exit->clone, 21, 21);
		2166
		2167	$exit->destroy;
		2168	});
		2169
		2170	$LINK_MAP->{deny_save} = 1;
		2171	$LINK_MAP->{deny_reset} = 1;
		2172
		2173	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1147	}	2174	}
1148		2175
1149	register "<global>", __PACKAGE__;	2176	register "<global>", __PACKAGE__;
1150		2177
1151	register_command "perl-reload" => sub {	2178	register_command "reload" => sub {
1152	my ($who, $arg) = @_;	2179	my ($who, $arg) = @_;
1153		2180
1154	if ($who->flag (FLAG_WIZ)) {	2181	if ($who->flag (FLAG_WIZ)) {
1155	_perl_reload {	2182	$who->message ("start of reload.");
1156	warn $_[0];	2183	reload;
1157	$who->message ($_[0]);	2184	$who->message ("end of reload.");
1158	};
1159	}	2185	}
1160	};	2186	};
1161		2187
1162	unshift @INC, $LIBDIR;	2188	unshift @INC, $LIBDIR;
1163		2189
1164	$TICK_WATCHER = Event->timer (	2190	$TICK_WATCHER = Event->timer (
		2191	reentrant => 0,
1165	prio => 0,	2192	prio => 0,
1166	at => $NEXT_TICK || 1,	2193	at => $NEXT_TICK || $TICK,
1167	data => WF_AUTOCANCEL,	2194	data => WF_AUTOCANCEL,
1168	cb => sub {	2195	cb => sub {
1169	cf::server_tick; # one server iteration	2196	cf::server_tick; # one server iteration
1170		2197	$RUNTIME += $TICK;
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;	2198	$NEXT_TICK += $TICK;
1173		2199
1174	# if we are delayed by four ticks or more, skip them all	2200	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2201	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1176		2202
1177	$TICK_WATCHER->at ($NEXT_TICK);	2203	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;	2204	$TICK_WATCHER->start;
1179	},	2205	},
1180	);	2206	);
1181		2207
1182	IO::AIO::max_poll_time $TICK * 0.2;	2208	IO::AIO::max_poll_time $TICK * 0.2;
1183		2209
		2210	Event->io (
1184	Event->io (fd => IO::AIO::poll_fileno,	2211	fd => IO::AIO::poll_fileno,
1185	poll => 'r',	2212	poll => 'r',
1186	prio => 5,	2213	prio => 5,
1187	data => WF_AUTOCANCEL,	2214	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);	2215	cb => \&IO::AIO::poll_cb,
		2216	);
		2217
		2218	Event->timer (
		2219	data => WF_AUTOCANCEL,
		2220	after => 0,
		2221	interval => 10,
		2222	cb => sub {
		2223	(Coro::unblock_sub {
		2224	write_runtime
		2225	or warn "ERROR: unable to write runtime file: $!";
		2226	})->();
		2227	},
		2228	);
		2229
		2230	END { cf::emergency_save }
1189		2231
1190	1	2232	1
1191		2233

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