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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 1.150 by root, Mon Jan 8 19:25:53 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 2.32 ();
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 %PLAYER; # all users
		53	our %MAP; # all maps
		54	our $LINK_MAP; # the special {link} map
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO; # coroutines bound to extensions
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76	our $EMERGENCY_POSITION;
39		77
40	#############################################################################	78	#############################################################################
41		79
42	=head2 GLOBAL VARIABLES	80	=head2 GLOBAL VARIABLES
43		81
44	=over 4	82	=over 4
45		83
46	=item $cf::UPTIME	84	=item $cf::UPTIME
47		85
48	The timestamp of the server start (so not actually an uptime).	86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
49		92
50	=item $cf::LIBDIR	93	=item $cf::LIBDIR
51		94
52	The perl library directory, where extensions and cf-specific modules can	95	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
54		101
55	=item $cf::TICK	102	=item $cf::TICK
56		103
57	The interval between server ticks, in seconds.	104	The interval between server ticks, in seconds.
58		105
…		…
66	=cut	113	=cut
67		114
68	BEGIN {	115	BEGIN {
69	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
71	$msg .= "\n"	120	$msg .= "\n"
72	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
73		122
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	123	LOG llevError, $msg;
76	};	124	};
77	}	125	}
78		126
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		133
86	# we bless all objects into (empty) derived classes to force a method lookup	134	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	135	# within the Safe compartment.
88	for my $pkg (qw(	136	for my $pkg (qw(
89	cf::global	137	cf::global cf::attachable
90	cf::object cf::object::player	138	cf::object cf::object::player
91	cf::client cf::player	139	cf::client cf::player
92	cf::arch cf::living	140	cf::arch cf::living
93	cf::map cf::party cf::region	141	cf::map cf::party cf::region
94	)) {	142	)) {
…		…
132	sub to_json($) {	180	sub to_json($) {
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
134	JSON::Syck::Dump $_[0]	182	JSON::Syck::Dump $_[0]
135	}	183	}
136		184
		185	=item cf::lock_wait $string
		186
		187	Wait until the given lock is available. See cf::lock_acquire.
		188
		189	=item my $lock = cf::lock_acquire $string
		190
		191	Wait until the given lock is available and then acquires it and returns
		192	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		193	for example when the coroutine gets canceled), the lock is automatically
		194	returned.
		195
		196	Lock names should begin with a unique identifier (for example, cf::map::find
		197	uses map_find and cf::map::load uses map_load).
		198
		199	=cut
		200
		201	our %LOCK;
		202
		203	sub lock_wait($) {
		204	my ($key) = @_;
		205
		206	# wait for lock, if any
		207	while ($LOCK{$key}) {
		208	push @{ $LOCK{$key} }, $Coro::current;
		209	Coro::schedule;
		210	}
		211	}
		212
		213	sub lock_acquire($) {
		214	my ($key) = @_;
		215
		216	# wait, to be sure we are not locked
		217	lock_wait $key;
		218
		219	$LOCK{$key} = [];
		220
		221	Coro::guard {
		222	# wake up all waiters, to be on the safe side
		223	$_->ready for @{ delete $LOCK{$key} };
		224	}
		225	}
		226
		227	sub freeze_mainloop {
		228	return unless $TICK_WATCHER->is_active;
		229
		230	my $guard = Coro::guard { $TICK_WATCHER->start };
		231	$TICK_WATCHER->stop;
		232	$guard
		233	}
		234
		235	=item cf::async { BLOCK }
		236
		237	Currently the same as Coro::async_pool, meaning you cannot use
		238	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		239	thing you are allowed to do is call C<prio> on it.
		240
		241	=cut
		242
		243	BEGIN { *async = \&Coro::async_pool }
		244
		245	=item cf::sync_job { BLOCK }
		246
		247	The design of crossfire+ requires that the main coro ($Coro::main) is
		248	always able to handle events or runnable, as crossfire+ is only partly
		249	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		250
		251	If it must be done, put the blocking parts into C<sync_job>. This will run
		252	the given BLOCK in another coroutine while waiting for the result. The
		253	server will be frozen during this time, so the block should either finish
		254	fast or be very important.
		255
		256	=cut
		257
		258	sub sync_job(&) {
		259	my ($job) = @_;
		260
		261	if ($Coro::current == $Coro::main) {
		262	# this is the main coro, too bad, we have to block
		263	# till the operation succeeds, freezing the server :/
		264
		265	# TODO: use suspend/resume instead
		266	# (but this is cancel-safe)
		267	my $freeze_guard = freeze_mainloop;
		268
		269	my $busy = 1;
		270	my @res;
		271
		272	(async {
		273	@res = eval { $job->() };
		274	warn $@ if $@;
		275	undef $busy;
		276	})->prio (Coro::PRIO_MAX);
		277
		278	while ($busy) {
		279	Coro::cede or Event::one_event;
		280	}
		281
		282	wantarray ? @res : $res[0]
		283	} else {
		284	# we are in another coroutine, how wonderful, everything just works
		285
		286	$job->()
		287	}
		288	}
		289
		290	=item $coro = cf::async_ext { BLOCK }
		291
		292	Like async, but this coro is automcatially being canceled when the
		293	extension calling this is being unloaded.
		294
		295	=cut
		296
		297	sub async_ext(&) {
		298	my $cb = shift;
		299
		300	my $coro = &Coro::async ($cb);
		301
		302	$coro->on_destroy (sub {
		303	delete $EXT_CORO{$coro+0};
		304	});
		305	$EXT_CORO{$coro+0} = $coro;
		306
		307	$coro
		308	}
		309
		310	sub write_runtime {
		311	my $runtime = cf::localdir . "/runtime";
		312
		313	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		314	or return;
		315
		316	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		317	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		318	and return;
		319
		320	aio_fsync $fh
		321	and return;
		322
		323	close $fh
		324	or return;
		325
		326	aio_rename "$runtime~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
137	=back	332	=back
138		333
139	=cut	334	=cut
		335
		336	#############################################################################
		337
		338	package cf::path;
		339
		340	sub new {
		341	my ($class, $path, $base) = @_;
		342
		343	$path = $path->as_string if ref $path;
		344
		345	my $self = bless { }, $class;
		346
		347	# {... are special paths that are not touched
		348	# ?xxx/... are special absolute paths
		349	# ?random/... random maps
		350	# /! non-realised random map exit
		351	# /... normal maps
		352	# ~/... per-player maps without a specific player (DO NOT USE)
		353	# ~user/... per-player map of a specific user
		354
		355	if ($path =~ /^{/) {
		356	# fine as it is
		357	} elsif ($path =~ s{^\?random/}{}) {
		358	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		359	$self->{random} = cf::from_json $data;
		360	} else {
		361	if ($path =~ s{^~([^/]+)?}{}) {
		362	$self->{user_rel} = 1;
		363
		364	if (defined $1) {
		365	$self->{user} = $1;
		366	} elsif ($base =~ m{^~([^/]+)/}) {
		367	$self->{user} = $1;
		368	} else {
		369	warn "cannot resolve user-relative path without user <$path,$base>\n";
		370	}
		371	} elsif ($path =~ /^\//) {
		372	# already absolute
		373	} else {
		374	$base =~ s{[^/]+/?$}{};
		375	return $class->new ("$base/$path");
		376	}
		377
		378	for ($path) {
		379	redo if s{/\.?/}{/};
		380	redo if s{/[^/]+/\.\./}{/};
		381	}
		382	}
		383
		384	$self->{path} = $path;
		385
		386	$self
		387	}
		388
		389	# the name / primary key / in-game path
		390	sub as_string {
		391	my ($self) = @_;
		392
		393	$self->{user_rel} ? "~$self->{user}$self->{path}"
		394	: $self->{random} ? "?random/$self->{path}"
		395	: $self->{path}
		396	}
		397
		398	# the displayed name, this is a one way mapping
		399	sub visible_name {
		400	my ($self) = @_;
		401
		402	# if (my $rmp = $self->{random}) {
		403	# # todo: be more intelligent about this
		404	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		405	# } else {
		406	$self->as_string
		407	# }
		408	}
		409
		410	# escape the /'s in the path
		411	sub _escaped_path {
		412	# ∕ is U+2215
		413	(my $path = $_[0]{path}) =~ s/\//∕/g;
		414	$path
		415	}
		416
		417	# the original (read-only) location
		418	sub load_path {
		419	my ($self) = @_;
		420
		421	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		422	}
		423
		424	# the temporary/swap location
		425	sub save_path {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		429	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		430	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		431	}
		432
		433	# the unique path, might be eq to save_path
		434	sub uniq_path {
		435	my ($self) = @_;
		436
		437	$self->{user_rel} || $self->{random}
		438	? undef
		439	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		440	}
		441
		442	# return random map parameters, or undef
		443	sub random_map_params {
		444	my ($self) = @_;
		445
		446	$self->{random}
		447	}
		448
		449	# this is somewhat ugly, but style maps do need special treatment
		450	sub is_style_map {
		451	$_[0]{path} =~ m{^/styles/}
		452	}
		453
		454	package cf;
140		455
141	#############################################################################	456	#############################################################################
142		457
143	=head2 ATTACHABLE OBJECTS	458	=head2 ATTACHABLE OBJECTS
144		459
…		…
249	my ($self, $victim) = @_;	564	my ($self, $victim) = @_;
250	...	565	...
251	}	566	}
252	}	567	}
253		568
		569	=item $attachable->valid
		570
		571	Just because you have a perl object does not mean that the corresponding
		572	C-level object still exists. If you try to access an object that has no
		573	valid C counterpart anymore you get an exception at runtime. This method
		574	can be used to test for existence of the C object part without causing an
		575	exception.
		576
254	=cut	577	=cut
255		578
256	# the following variables are defined in .xs and must not be re-created	579	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	580	our @CB_GLOBAL = (); # registry for all global events
		581	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	582	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	583	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	584	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	585	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	586	our @CB_MAP = ();
263		587
264	my %attachment;	588	my %attachment;
265		589
266	sub _attach_cb($$$$) {	590	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	591	my ($registry, $event, $prio, $cb) = @_;
…		…
272		596
273	@{$registry->[$event]} = sort	597	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	598	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	599	@{$registry->[$event] || []}, $cb;
276	}	600	}
		601
		602	# hack
		603	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		604
278	# attach handles attaching event callbacks	605	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	606	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	607	# registry (== where the callback attaches to).
281	sub _attach {	608	sub _attach {
…		…
283		610
284	my $object_type;	611	my $object_type;
285	my $prio = 0;	612	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	613	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		614
		615	#TODO: get rid of this hack
		616	if ($attachable_klass{$klass}) {
		617	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		618	}
		619
288	while (@arg) {	620	while (@arg) {
289	my $type = shift @arg;	621	my $type = shift @arg;
290		622
291	if ($type eq "prio") {	623	if ($type eq "prio") {
292	$prio = shift @arg;	624	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	699	my ($obj, $name) = @_;
368		700
369	exists $obj->{_attachment}{$name}	701	exists $obj->{_attachment}{$name}
370	}	702	}
371		703
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	705	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	706	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	707	(\\\@CB_$klass, KLASS_$klass)
376	}	708	}
377		709
…		…
413	}	745	}
414		746
415	0	747	0
416	}	748	}
417		749
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		751
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, ...)	752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		753
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	754	Generate an object-specific event with the given arguments.
429		755
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	756	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	757	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	758	results (if you must, access C<@cf::invoke_results> directly).
433		759
434	=back	760	=back
435		761
436	=cut	762	=cut
437		763
438	#############################################################################	764	#############################################################################
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	765	# object support
460		766
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 {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	769	my ($obj) = @_;
		770
476	my $registry = $obj->registry;	771	my $registry = $obj->registry;
477		772
478	@$registry = ();	773	@$registry = ();
479		774
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	784	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	785	}
491	}	786	}
492	}	787	}
493		788
494	sub object_freezer_save {	789	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	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
554	on_clone => sub {	803	on_clone => sub {
555	my ($src, $dst) = @_;	804	my ($src, $dst) = @_;
556		805
557	@{$dst->registry} = @{$src->registry};	806	@{$dst->registry} = @{$src->registry};
558		807
…		…
560		809
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	810	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	811	if exists $src->{_attachment};
563	},	812	},
564	);	813	);
		814
		815	sub object_freezer_save {
		816	my ($filename, $rdata, $objs) = @_;
		817
		818	sync_job {
		819	if (length $$rdata) {
		820	warn sprintf "saving %s (%d,%d)\n",
		821	$filename, length $$rdata, scalar @$objs;
		822
		823	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		824	chmod SAVE_MODE, $fh;
		825	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		826	aio_fsync $fh;
		827	close $fh;
		828
		829	if (@$objs) {
		830	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		831	chmod SAVE_MODE, $fh;
		832	my $data = Storable::nfreeze { version => 1, objs => $objs };
		833	aio_write $fh, 0, (length $data), $data, 0;
		834	aio_fsync $fh;
		835	close $fh;
		836	aio_rename "$filename.pst~", "$filename.pst";
		837	}
		838	} else {
		839	aio_unlink "$filename.pst";
		840	}
		841
		842	aio_rename "$filename~", $filename;
		843	} else {
		844	warn "FATAL: $filename~: $!\n";
		845	}
		846	} else {
		847	aio_unlink $filename;
		848	aio_unlink "$filename.pst";
		849	}
		850	}
		851	}
		852
		853	sub object_freezer_as_string {
		854	my ($rdata, $objs) = @_;
		855
		856	use Data::Dumper;
		857
		858	$$rdata . Dumper $objs
		859	}
		860
		861	sub object_thawer_load {
		862	my ($filename) = @_;
		863
		864	my ($data, $av);
		865
		866	(aio_load $filename, $data) >= 0
		867	or return;
		868
		869	unless (aio_stat "$filename.pst") {
		870	(aio_load "$filename.pst", $av) >= 0
		871	or return;
		872	$av = eval { (Storable::thaw $av)->{objs} };
		873	}
		874
		875	warn sprintf "loading %s (%d)\n",
		876	$filename, length $data, scalar @{$av || []};#d#
		877	return ($data, $av);
		878	}
565		879
566	#############################################################################	880	#############################################################################
567	# command handling &c	881	# command handling &c
568		882
569	=item cf::register_command $name => \&callback($ob,$args);	883	=item cf::register_command $name => \&callback($ob,$args);
…		…
758		1072
759	=head2 CORE EXTENSIONS	1073	=head2 CORE EXTENSIONS
760		1074
761	Functions and methods that extend core crossfire objects.	1075	Functions and methods that extend core crossfire objects.
762		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
763	=over 4	1083	=over 4
764		1084
765	=item cf::player::exists $login	1085	=item cf::player::find $login
766		1086
767	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
768		1088
769	=cut	1089	=cut
770		1090
771	sub cf::player::exists($) {	1091	sub playerdir($) {
772	cf::player::find $_[0]	1092	cf::localdir
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	. "/"
		1094	. cf::playerdir
		1095	. "/"
		1096	. (ref $_[0] ? $_[0]->ob->name : $_[0])
774	}	1097	}
		1098
		1099	sub path($) {
		1100	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1101
		1102	(playerdir $login) . "/$login.pl"
		1103	}
		1104
		1105	sub find_active($) {
		1106	$cf::PLAYER{$_[0]}
		1107	and $cf::PLAYER{$_[0]}->active
		1108	and $cf::PLAYER{$_[0]}
		1109	}
		1110
		1111	sub exists($) {
		1112	my ($login) = @_;
		1113
		1114	$cf::PLAYER{$login}
		1115	or cf::sync_job { !aio_stat $login }
		1116	}
		1117
		1118	sub find($) {
		1119	return $cf::PLAYER{$_[0]} || do {
		1120	my $login = $_[0];
		1121
		1122	my $guard = cf::lock_acquire "user_find:$login";
		1123
		1124	$cf::PLAYER{$login} ||= (load_pl path $login or return);
		1125	};
		1126	}
		1127
		1128	sub save($) {
		1129	my ($pl) = @_;
		1130
		1131	return if $pl->{deny_save};
		1132
		1133	my $path = path $pl;
		1134	my $guard = cf::lock_acquire "user_save:$path";
		1135
		1136	return if $pl->{deny_save};
		1137
		1138	Coro::AIO::aio_mkdir playerdir $pl, 0770;
		1139	$pl->{last_save} = $cf::RUNTIME;
		1140
		1141	$pl->save_pl ($path);
		1142	Coro::cede;
		1143	}
		1144
		1145	sub new($) {
		1146	my ($login) = @_;
		1147
		1148	my $self = create;
		1149
		1150	$self->ob->name ($login);
		1151	$self->{deny_save} = 1;
		1152
		1153	$cf::PLAYER{$login} = $self;
		1154
		1155	$self
		1156	}
		1157
		1158	sub quit_character {
		1159	my ($pl) = @_;
		1160
		1161	$pl->{deny_save} = 1;
		1162	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1163
		1164	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1165	$pl->deactivate;
		1166	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1167	$pl->ns->destroy if $pl->ns;
		1168
		1169	my $path = playerdir $pl;
		1170	my $temp = "$path~$cf::RUNTIME~deleting~";
		1171	Coro::AIO::aio_rename $path, $temp;
		1172	delete $cf::PLAYER{$pl->ob->name};
		1173	$pl->destroy;
		1174	IO::AIO::aio_rmtree $temp;
		1175	}
		1176
		1177	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1178
		1179	Sends an ext reply to the player.
		1180
		1181	=cut
		1182
		1183	sub ext_reply($$$%) {
		1184	my ($self, $id, %msg) = @_;
		1185
		1186	$msg{msgid} = $id;
		1187
		1188	$self->send ("ext " . cf::to_json \%msg);
		1189	}
		1190
		1191	package cf;
		1192
		1193	=back
		1194
		1195
		1196	=head3 cf::map
		1197
		1198	=over 4
		1199
		1200	=cut
		1201
		1202	package cf::map;
		1203
		1204	use Fcntl;
		1205	use Coro::AIO;
		1206
		1207	our $MAX_RESET = 3600;
		1208	our $DEFAULT_RESET = 3000;
		1209
		1210	sub generate_random_map {
		1211	my ($path, $rmp) = @_;
		1212
		1213	# mit "rum" bekleckern, nicht
		1214	cf::map::_create_random_map
		1215	$path,
		1216	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1217	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1218	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1219	$rmp->{exit_on_final_map},
		1220	$rmp->{xsize}, $rmp->{ysize},
		1221	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1222	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1223	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1224	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1225	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1226	(cf::region::find $rmp->{region})
		1227	}
		1228
		1229	# and all this just because we cannot iterate over
		1230	# all maps in C++...
		1231	sub change_all_map_light {
		1232	my ($change) = @_;
		1233
		1234	$_->change_map_light ($change)
		1235	for grep $_->outdoor, values %cf::MAP;
		1236	}
		1237
		1238	sub try_load_header($) {
		1239	my ($path) = @_;
		1240
		1241	utf8::encode $path;
		1242	aio_open $path, O_RDONLY, 0
		1243	or return;
		1244
		1245	my $map = cf::map::new
		1246	or return;
		1247
		1248	# for better error messages only, will be overwritten
		1249	$map->path ($path);
		1250
		1251	$map->load_header ($path)
		1252	or return;
		1253
		1254	$map->{load_path} = $path;
		1255
		1256	$map
		1257	}
		1258
		1259	sub find;
		1260	sub find {
		1261	my ($path, $origin) = @_;
		1262
		1263	#warn "find<$path,$origin>\n";#d#
		1264
		1265	$path = new cf::path $path, $origin && $origin->path;
		1266	my $key = $path->as_string;
		1267
		1268	cf::lock_wait "map_find:$key";
		1269
		1270	$cf::MAP{$key} || do {
		1271	my $guard = cf::lock_acquire "map_find:$key";
		1272
		1273	# do it the slow way
		1274	my $map = try_load_header $path->save_path;
		1275
		1276	Coro::cede;
		1277
		1278	if ($map) {
		1279	$map->last_access ((delete $map->{last_access})
		1280	|| $cf::RUNTIME); #d#
		1281	# safety
		1282	$map->{instantiate_time} = $cf::RUNTIME
		1283	if $map->{instantiate_time} > $cf::RUNTIME;
		1284	} else {
		1285	if (my $rmp = $path->random_map_params) {
		1286	$map = generate_random_map $key, $rmp;
		1287	} else {
		1288	$map = try_load_header $path->load_path;
		1289	}
		1290
		1291	$map or return;
		1292
		1293	$map->{load_original} = 1;
		1294	$map->{instantiate_time} = $cf::RUNTIME;
		1295	$map->last_access ($cf::RUNTIME);
		1296	$map->instantiate;
		1297
		1298	# per-player maps become, after loading, normal maps
		1299	$map->per_player (0) if $path->{user_rel};
		1300	}
		1301
		1302	$map->path ($key);
		1303	$map->{path} = $path;
		1304	$map->{last_save} = $cf::RUNTIME;
		1305
		1306	Coro::cede;
		1307
		1308	if ($map->should_reset) {
		1309	$map->reset;
		1310	undef $guard;
		1311	$map = find $path
		1312	or return;
		1313	}
		1314
		1315	$cf::MAP{$key} = $map
		1316	}
		1317	}
		1318
		1319	sub load {
		1320	my ($self) = @_;
		1321
		1322	my $path = $self->{path};
		1323	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1324
		1325	return if $self->in_memory != cf::MAP_SWAPPED;
		1326
		1327	$self->in_memory (cf::MAP_LOADING);
		1328
		1329	$self->alloc;
		1330	$self->load_objects ($self->{load_path}, 1)
		1331	or return;
		1332
		1333	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1334	if delete $self->{load_original};
		1335
		1336	if (my $uniq = $path->uniq_path) {
		1337	utf8::encode $uniq;
		1338	if (aio_open $uniq, O_RDONLY, 0) {
		1339	$self->clear_unique_items;
		1340	$self->load_objects ($uniq, 0);
		1341	}
		1342	}
		1343
		1344	Coro::cede;
		1345
		1346	# now do the right thing for maps
		1347	$self->link_multipart_objects;
		1348
		1349	if ($self->{path}->is_style_map) {
		1350	$self->{deny_save} = 1;
		1351	$self->{deny_reset} = 1;
		1352	} else {
		1353	$self->fix_auto_apply;
		1354	$self->decay_objects;
		1355	$self->update_buttons;
		1356	$self->set_darkness_map;
		1357	$self->difficulty ($self->estimate_difficulty)
		1358	unless $self->difficulty;
		1359	$self->activate;
		1360	}
		1361
		1362	Coro::cede;
		1363
		1364	$self->in_memory (cf::MAP_IN_MEMORY);
		1365	}
		1366
		1367	sub find_sync {
		1368	my ($path, $origin) = @_;
		1369
		1370	cf::sync_job { cf::map::find $path, $origin }
		1371	}
		1372
		1373	sub do_load_sync {
		1374	my ($map) = @_;
		1375
		1376	cf::sync_job { $map->load };
		1377	}
		1378
		1379	sub save {
		1380	my ($self) = @_;
		1381
		1382	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1383
		1384	$self->{last_save} = $cf::RUNTIME;
		1385
		1386	return unless $self->dirty;
		1387
		1388	my $save = $self->{path}->save_path; utf8::encode $save;
		1389	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1390
		1391	$self->{load_path} = $save;
		1392
		1393	return if $self->{deny_save};
		1394
		1395	local $self->{last_access} = $self->last_access;#d#
		1396
		1397	cf::async {
		1398	$_->contr->save for $self->players;
		1399	};
		1400
		1401	if ($uniq) {
		1402	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1403	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1404	} else {
		1405	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1406	}
		1407	}
		1408
		1409	sub swap_out {
		1410	my ($self) = @_;
		1411
		1412	# save first because save cedes
		1413	$self->save;
		1414
		1415	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1416
		1417	return if $self->players;
		1418	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1419	return if $self->{deny_save};
		1420
		1421	$self->clear;
		1422	$self->in_memory (cf::MAP_SWAPPED);
		1423	}
		1424
		1425	sub reset_at {
		1426	my ($self) = @_;
		1427
		1428	# TODO: safety, remove and allow resettable per-player maps
		1429	return 1e99 if $self->{path}{user_rel};
		1430	return 1e99 if $self->{deny_reset};
		1431
		1432	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1433	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1434
		1435	$time + $to
		1436	}
		1437
		1438	sub should_reset {
		1439	my ($self) = @_;
		1440
		1441	$self->reset_at <= $cf::RUNTIME
		1442	}
		1443
		1444	sub unlink_save {
		1445	my ($self) = @_;
		1446
		1447	utf8::encode (my $save = $self->{path}->save_path);
		1448	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1449	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1450	}
		1451
		1452	sub rename {
		1453	my ($self, $new_path) = @_;
		1454
		1455	$self->unlink_save;
		1456
		1457	delete $cf::MAP{$self->path};
		1458	$self->{path} = new cf::path $new_path;
		1459	$self->path ($self->{path}->as_string);
		1460	$cf::MAP{$self->path} = $self;
		1461
		1462	$self->save;
		1463	}
		1464
		1465	sub reset {
		1466	my ($self) = @_;
		1467
		1468	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1469
		1470	return if $self->players;
		1471	return if $self->{path}{user_rel};#d#
		1472
		1473	warn "resetting map ", $self->path;#d#
		1474
		1475	delete $cf::MAP{$self->path};
		1476
		1477	$_->clear_links_to ($self) for values %cf::MAP;
		1478
		1479	$self->unlink_save;
		1480	$self->destroy;
		1481	}
		1482
		1483	my $nuke_counter = "aaaa";
		1484
		1485	sub nuke {
		1486	my ($self) = @_;
		1487
		1488	$self->{deny_save} = 1;
		1489	$self->reset_timeout (1);
		1490	$self->rename ("{nuke}/" . ($nuke_counter++));
		1491	$self->reset; # polite request, might not happen
		1492	}
		1493
		1494	sub customise_for {
		1495	my ($map, $ob) = @_;
		1496
		1497	if ($map->per_player) {
		1498	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1499	}
		1500
		1501	$map
		1502	}
		1503
		1504	sub emergency_save {
		1505	my $freeze_guard = cf::freeze_mainloop;
		1506
		1507	warn "enter emergency perl save\n";
		1508
		1509	cf::sync_job {
		1510	warn "begin emergency player save\n";
		1511	$_->save for values %cf::PLAYER;
		1512	warn "end emergency player save\n";
		1513
		1514	warn "begin emergency map save\n";
		1515	$_->save for values %cf::MAP;
		1516	warn "end emergency map save\n";
		1517	};
		1518
		1519	warn "leave emergency perl save\n";
		1520	}
		1521
		1522	package cf;
		1523
		1524	=back
		1525
		1526
		1527	=head3 cf::object::player
		1528
		1529	=over 4
775		1530
776	=item $player_object->reply ($npc, $msg[, $flags])	1531	=item $player_object->reply ($npc, $msg[, $flags])
777		1532
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1533	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	1534	can be C<undef>. Does the right thing when the player is currently in a
…		…
781		1536
782	=cut	1537	=cut
783		1538
784	# rough implementation of a future "reply" method that works	1539	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	1540	# with dialog boxes.
		1541	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	1542	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	1543	my ($self, $npc, $msg, $flags) = @_;
788		1544
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1545	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		1546
…		…
794	$msg = $npc->name . " says: $msg" if $npc;	1550	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	1551	$self->message ($msg, $flags);
796	}	1552	}
797	}	1553	}
798		1554
799	=item $player->ext_reply ($msgid, $msgtype, %msg)
800
801	Sends an ext reply to the player.
802
803	=cut
804
805	sub cf::player::ext_reply($$$%) {
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")	1555	=item $player_object->may ("access")
814		1556
815	Returns wether the given player is authorized to access resource "access"	1557	Returns wether the given player is authorized to access resource "access"
816	(e.g. "command_wizcast").	1558	(e.g. "command_wizcast").
817		1559
…		…
824	(ref $cf::CFG{"may_$access"}	1566	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1567	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1568	: $cf::CFG{"may_$access"})
827	}	1569	}
828		1570
829	=cut	1571	=item $player_object->enter_link
830		1572
831	#############################################################################	1573	Freezes the player and moves him/her to a special map (C<{link}>).
		1574
		1575	The player should be reaosnably safe there for short amounts of time. You
		1576	I<MUST> call C<leave_link> as soon as possible, though.
		1577
		1578	=item $player_object->leave_link ($map, $x, $y)
		1579
		1580	Moves the player out of the specila link map onto the given map. If the
		1581	map is not valid (or omitted), the player will be moved back to the
		1582	location he/she was before the call to C<enter_link>, or, if that fails,
		1583	to the emergency map position.
		1584
		1585	Might block.
		1586
		1587	=cut
		1588
		1589	sub cf::object::player::enter_link {
		1590	my ($self) = @_;
		1591
		1592	$self->deactivate_recursive;
		1593
		1594	return if $self->map == $LINK_MAP;
		1595
		1596	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1597	if $self->map;
		1598
		1599	$self->enter_map ($LINK_MAP, 20, 20);
		1600	}
		1601
		1602	sub cf::object::player::leave_link {
		1603	my ($self, $map, $x, $y) = @_;
		1604
		1605	my $link_pos = delete $self->{_link_pos};
		1606
		1607	unless ($map) {
		1608	# restore original map position
		1609	($map, $x, $y) = @{ $link_pos || [] };
		1610	$map = cf::map::find $map;
		1611
		1612	unless ($map) {
		1613	($map, $x, $y) = @$EMERGENCY_POSITION;
		1614	$map = cf::map::find $map
		1615	or die "FATAL: cannot load emergency map\n";
		1616	}
		1617	}
		1618
		1619	($x, $y) = (-1, -1)
		1620	unless (defined $x) && (defined $y);
		1621
		1622	# use -1 or undef as default coordinates, not 0, 0
		1623	($x, $y) = ($map->enter_x, $map->enter_y)
		1624	if $x <=0 && $y <= 0;
		1625
		1626	$map->load;
		1627
		1628	return unless $self->contr->active;
		1629	$self->activate_recursive;
		1630	$self->enter_map ($map, $x, $y);
		1631	}
		1632
		1633	cf::player->attach (
		1634	on_logout => sub {
		1635	my ($pl) = @_;
		1636
		1637	# abort map switching before logout
		1638	if ($pl->ob->{_link_pos}) {
		1639	cf::sync_job {
		1640	$pl->ob->leave_link
		1641	};
		1642	}
		1643	},
		1644	on_login => sub {
		1645	my ($pl) = @_;
		1646
		1647	# try to abort aborted map switching on player login :)
		1648	# should happen only on crashes
		1649	if ($pl->ob->{_link_pos}) {
		1650	$pl->ob->enter_link;
		1651	(async {
		1652	# we need this sleep as the login has a concurrent enter_exit running
		1653	# and this sleep increases chances of the player not ending up in scorn
		1654	$pl->ob->reply (undef,
		1655	"There was an internal problem at your last logout, "
		1656	. "the server will try to bring you to your intended destination in a second.",
		1657	cf::NDI_RED);
		1658	Coro::Timer::sleep 1;
		1659	$pl->ob->leave_link;
		1660	})->prio (2);
		1661	}
		1662	},
		1663	);
		1664
		1665	=item $player_object->goto ($path, $x, $y)
		1666
		1667	=cut
		1668
		1669	sub cf::object::player::goto {
		1670	my ($self, $path, $x, $y) = @_;
		1671
		1672	$self->enter_link;
		1673
		1674	(async {
		1675	$path = new cf::path $path;
		1676
		1677	my $map = cf::map::find $path->as_string;
		1678	$map = $map->customise_for ($self) if $map;
		1679
		1680	# warn "entering ", $map->path, " at ($x, $y)\n"
		1681	# if $map;
		1682
		1683	$map or $map->cluck ("oy");#d#
		1684	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1685
		1686	$self->leave_link ($map, $x, $y);
		1687	})->prio (1);
		1688	}
		1689
		1690	=item $player_object->enter_exit ($exit_object)
		1691
		1692	=cut
		1693
		1694	sub parse_random_map_params {
		1695	my ($spec) = @_;
		1696
		1697	my $rmp = { # defaults
		1698	xsize => 10,
		1699	ysize => 10,
		1700	};
		1701
		1702	for (split /\n/, $spec) {
		1703	my ($k, $v) = split /\s+/, $_, 2;
		1704
		1705	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1706	}
		1707
		1708	$rmp
		1709	}
		1710
		1711	sub prepare_random_map {
		1712	my ($exit) = @_;
		1713
		1714	# all this does is basically replace the /! path by
		1715	# a new random map path (?random/...) with a seed
		1716	# that depends on the exit object
		1717
		1718	my $rmp = parse_random_map_params $exit->msg;
		1719
		1720	if ($exit->map) {
		1721	$rmp->{region} = $exit->map->region_name;
		1722	$rmp->{origin_map} = $exit->map->path;
		1723	$rmp->{origin_x} = $exit->x;
		1724	$rmp->{origin_y} = $exit->y;
		1725	}
		1726
		1727	$rmp->{random_seed} ||= $exit->random_seed;
		1728
		1729	my $data = cf::to_json $rmp;
		1730	my $md5 = Digest::MD5::md5_hex $data;
		1731
		1732	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1733	aio_write $fh, 0, (length $data), $data, 0;
		1734
		1735	$exit->slaying ("?random/$md5");
		1736	$exit->msg (undef);
		1737	}
		1738	}
		1739
		1740	sub cf::object::player::enter_exit {
		1741	my ($self, $exit) = @_;
		1742
		1743	return unless $self->type == cf::PLAYER;
		1744
		1745	$self->enter_link;
		1746
		1747	(async {
		1748	$self->deactivate_recursive; # just to be sure
		1749	unless (eval {
		1750	prepare_random_map $exit
		1751	if $exit->slaying eq "/!";
		1752
		1753	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1754	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1755
		1756	1;
		1757	}) {
		1758	$self->message ("Something went wrong deep within the crossfire server. "
		1759	. "I'll try to bring you back to the map you were before. "
		1760	. "Please report this to the dungeon master",
		1761	cf::NDI_UNIQUE | cf::NDI_RED);
		1762
		1763	warn "ERROR in enter_exit: $@";
		1764	$self->leave_link;
		1765	}
		1766	})->prio (1);
		1767	}
		1768
		1769	=head3 cf::client
		1770
		1771	=over 4
		1772
		1773	=item $client->send_drawinfo ($text, $flags)
		1774
		1775	Sends a drawinfo packet to the client. Circumvents output buffering so
		1776	should not be used under normal circumstances.
		1777
		1778	=cut
		1779
		1780	sub cf::client::send_drawinfo {
		1781	my ($self, $text, $flags) = @_;
		1782
		1783	utf8::encode $text;
		1784	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1785	}
		1786
		1787
		1788	=item $success = $client->query ($flags, "text", \&cb)
		1789
		1790	Queues a query to the client, calling the given callback with
		1791	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1792	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1793
		1794	Queries can fail, so check the return code. Or don't, as queries will become
		1795	reliable at some point in the future.
		1796
		1797	=cut
		1798
		1799	sub cf::client::query {
		1800	my ($self, $flags, $text, $cb) = @_;
		1801
		1802	return unless $self->state == ST_PLAYING
		1803	|| $self->state == ST_SETUP
		1804	|| $self->state == ST_CUSTOM;
		1805
		1806	$self->state (ST_CUSTOM);
		1807
		1808	utf8::encode $text;
		1809	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1810
		1811	$self->send_packet ($self->{query_queue}[0][0])
		1812	if @{ $self->{query_queue} } == 1;
		1813	}
		1814
		1815	cf::client->attach (
		1816	on_reply => sub {
		1817	my ($ns, $msg) = @_;
		1818
		1819	# this weird shuffling is so that direct followup queries
		1820	# get handled first
		1821	my $queue = delete $ns->{query_queue}
		1822	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1823
		1824	(shift @$queue)->[1]->($msg);
		1825
		1826	push @{ $ns->{query_queue} }, @$queue;
		1827
		1828	if (@{ $ns->{query_queue} } == @$queue) {
		1829	if (@$queue) {
		1830	$ns->send_packet ($ns->{query_queue}[0][0]);
		1831	} else {
		1832	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1833	}
		1834	}
		1835	},
		1836	);
		1837
		1838	=item $client->async (\&cb)
		1839
		1840	Create a new coroutine, running the specified callback. The coroutine will
		1841	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1842	or loss of connection).
		1843
		1844	=cut
		1845
		1846	sub cf::client::async {
		1847	my ($self, $cb) = @_;
		1848
		1849	my $coro = &Coro::async ($cb);
		1850
		1851	$coro->on_destroy (sub {
		1852	delete $self->{_coro}{$coro+0};
		1853	});
		1854
		1855	$self->{_coro}{$coro+0} = $coro;
		1856
		1857	$coro
		1858	}
		1859
		1860	cf::client->attach (
		1861	on_destroy => sub {
		1862	my ($ns) = @_;
		1863
		1864	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1865	},
		1866	);
		1867
		1868	=back
		1869
832		1870
833	=head2 SAFE SCRIPTING	1871	=head2 SAFE SCRIPTING
834		1872
835	Functions that provide a safe environment to compile and execute	1873	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	1874	snippets of perl code without them endangering the safety of the server
…		…
988		2026
989	{	2027	{
990	my $path = cf::localdir . "/database.pst";	2028	my $path = cf::localdir . "/database.pst";
991		2029
992	sub db_load() {	2030	sub db_load() {
993	warn "loading database $path\n";#d# remove later
994	$DB = stat $path ? Storable::retrieve $path : { };	2031	$DB = stat $path ? Storable::retrieve $path : { };
995	}	2032	}
996		2033
997	my $pid;	2034	my $pid;
998		2035
999	sub db_save() {	2036	sub db_save() {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;	2037	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {	2038	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;	2039	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";	2040	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;	2041	rename "$path~", $path;
…		…
1053	open my $fh, "<:utf8", cf::confdir . "/config"	2089	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;	2090	or return;
1055		2091
1056	local $/;	2092	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;	2093	*CFG = YAML::Syck::Load <$fh>;
		2094
		2095	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2096
		2097	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2098	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2099
		2100	if (exists $CFG{mlockall}) {
		2101	eval {
		2102	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2103	and die "WARNING: m(un)lockall failed: $!\n";
		2104	};
		2105	warn $@ if $@;
		2106	}
1058	}	2107	}
1059		2108
1060	sub main {	2109	sub main {
		2110	# we must not ever block the main coroutine
		2111	local $Coro::idle = sub {
		2112	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2113	async { Event::one_event };
		2114	};
		2115
1061	cfg_load;	2116	cfg_load;
1062	db_load;	2117	db_load;
1063	load_extensions;	2118	load_extensions;
1064	Event::loop;	2119	Event::loop;
1065	}	2120	}
1066		2121
1067	#############################################################################	2122	#############################################################################
1068	# initialisation	2123	# initialisation
1069		2124
1070	sub _perl_reload(&) {	2125	sub reload() {
1071	my ($msg) = @_;	2126	# can/must only be called in main
		2127	if ($Coro::current != $Coro::main) {
		2128	warn "can only reload from main coroutine\n";
		2129	return;
		2130	}
1072		2131
1073	$msg->("reloading...");	2132	warn "reloading...";
		2133
		2134	my $guard = freeze_mainloop;
		2135	cf::emergency_save;
1074		2136
1075	eval {	2137	eval {
		2138	# if anything goes wrong in here, we should simply crash as we already saved
		2139
1076	# cancel all watchers	2140	# cancel all watchers
1077	for (Event::all_watchers) {	2141	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;	2142	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}	2143	}
1080		2144
		2145	# cancel all extension coros
		2146	$_->cancel for values %EXT_CORO;
		2147	%EXT_CORO = ();
		2148
1081	# unload all extensions	2149	# unload all extensions
1082	for (@exts) {	2150	for (@exts) {
1083	$msg->("unloading <$_>");	2151	warn "unloading <$_>";
1084	unload_extension $_;	2152	unload_extension $_;
1085	}	2153	}
1086		2154
1087	# unload all modules loaded from $LIBDIR	2155	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {	2156	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2157	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090		2158
1091	$msg->("removing <$k>");	2159	warn "removing <$k>";
1092	delete $INC{$k};	2160	delete $INC{$k};
1093		2161
1094	$k =~ s/\.pm$//;	2162	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;	2163	$k =~ s/\//::/g;
1096		2164
…		…
1101	Symbol::delete_package $k;	2169	Symbol::delete_package $k;
1102	}	2170	}
1103		2171
1104	# sync database to disk	2172	# sync database to disk
1105	cf::db_sync;	2173	cf::db_sync;
		2174	IO::AIO::flush;
1106		2175
1107	# get rid of safe::, as good as possible	2176	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"	2177	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2178	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1110		2179
1111	# remove register_script_function callbacks	2180	# remove register_script_function callbacks
1112	# TODO	2181	# TODO
1113		2182
1114	# unload cf.pm "a bit"	2183	# unload cf.pm "a bit"
…		…
1117	# don't, removes xs symbols, too,	2186	# don't, removes xs symbols, too,
1118	# and global variables created in xs	2187	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;	2188	#Symbol::delete_package __PACKAGE__;
1120		2189
1121	# reload cf.pm	2190	# reload cf.pm
1122	$msg->("reloading cf.pm");	2191	warn "reloading cf.pm";
1123	require cf;	2192	require cf;
		2193	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1124		2194
1125	# load config and database again	2195	# load config and database again
1126	cf::cfg_load;	2196	cf::cfg_load;
1127	cf::db_load;	2197	cf::db_load;
1128		2198
1129	# load extensions	2199	# load extensions
1130	$msg->("load extensions");	2200	warn "load extensions";
1131	cf::load_extensions;	2201	cf::load_extensions;
1132		2202
1133	# reattach attachments to objects	2203	# reattach attachments to objects
1134	$msg->("reattach");	2204	warn "reattach";
1135	_global_reattach;	2205	_global_reattach;
		2206	reattach $_ for values %MAP;
1136	};	2207	};
1137	$msg->($@) if $@;
1138		2208
1139	$msg->("reloaded");	2209	if ($@) {
		2210	warn $@;
		2211	warn "error while reloading, exiting.";
		2212	exit 1;
		2213	}
		2214
		2215	warn "reloaded successfully";
1140	};	2216	};
1141		2217
1142	sub perl_reload() {	2218	#############################################################################
1143	_perl_reload {	2219
1144	warn $_[0];	2220	unless ($LINK_MAP) {
1145	print "$_[0]\n";	2221	$LINK_MAP = cf::map::new;
1146	};	2222
		2223	$LINK_MAP->width (41);
		2224	$LINK_MAP->height (41);
		2225	$LINK_MAP->alloc;
		2226	$LINK_MAP->path ("{link}");
		2227	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2228	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2229
		2230	# dirty hack because... archetypes are not yet loaded
		2231	Event->timer (
		2232	after => 10,
		2233	cb => sub {
		2234	$_[0]->w->cancel;
		2235
		2236	# provide some exits "home"
		2237	my $exit = cf::object::new "exit";
		2238
		2239	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2240	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2241	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2242
		2243	$LINK_MAP->insert ($exit->clone, 19, 19);
		2244	$LINK_MAP->insert ($exit->clone, 19, 20);
		2245	$LINK_MAP->insert ($exit->clone, 19, 21);
		2246	$LINK_MAP->insert ($exit->clone, 20, 19);
		2247	$LINK_MAP->insert ($exit->clone, 20, 21);
		2248	$LINK_MAP->insert ($exit->clone, 21, 19);
		2249	$LINK_MAP->insert ($exit->clone, 21, 20);
		2250	$LINK_MAP->insert ($exit->clone, 21, 21);
		2251
		2252	$exit->destroy;
		2253	});
		2254
		2255	$LINK_MAP->{deny_save} = 1;
		2256	$LINK_MAP->{deny_reset} = 1;
		2257
		2258	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1147	}	2259	}
1148		2260
1149	register "<global>", __PACKAGE__;	2261	register "<global>", __PACKAGE__;
1150		2262
1151	register_command "perl-reload" => sub {	2263	register_command "reload" => sub {
1152	my ($who, $arg) = @_;	2264	my ($who, $arg) = @_;
1153		2265
1154	if ($who->flag (FLAG_WIZ)) {	2266	if ($who->flag (FLAG_WIZ)) {
1155	_perl_reload {	2267	$who->message ("start of reload.");
1156	warn $_[0];	2268	reload;
1157	$who->message ($_[0]);	2269	$who->message ("end of reload.");
1158	};
1159	}	2270	}
1160	};	2271	};
1161		2272
1162	unshift @INC, $LIBDIR;	2273	unshift @INC, $LIBDIR;
1163		2274
1164	$TICK_WATCHER = Event->timer (	2275	$TICK_WATCHER = Event->timer (
		2276	reentrant => 0,
1165	prio => 0,	2277	prio => 0,
1166	at => $NEXT_TICK || 1,	2278	at => $NEXT_TICK || $TICK,
1167	data => WF_AUTOCANCEL,	2279	data => WF_AUTOCANCEL,
1168	cb => sub {	2280	cb => sub {
1169	cf::server_tick; # one server iteration	2281	cf::server_tick; # one server iteration
1170		2282	$RUNTIME += $TICK;
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;	2283	$NEXT_TICK += $TICK;
1173		2284
1174	# if we are delayed by four ticks or more, skip them all	2285	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2286	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1176		2287
1177	$TICK_WATCHER->at ($NEXT_TICK);	2288	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;	2289	$TICK_WATCHER->start;
1179	},	2290	},
1180	);	2291	);
1181		2292
1182	IO::AIO::max_poll_time $TICK * 0.2;	2293	IO::AIO::max_poll_time $TICK * 0.2;
1183		2294
		2295	Event->io (
1184	Event->io (fd => IO::AIO::poll_fileno,	2296	fd => IO::AIO::poll_fileno,
1185	poll => 'r',	2297	poll => 'r',
1186	prio => 5,	2298	prio => 5,
1187	data => WF_AUTOCANCEL,	2299	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);	2300	cb => \&IO::AIO::poll_cb,
		2301	);
		2302
		2303	Event->timer (
		2304	data => WF_AUTOCANCEL,
		2305	after => 0,
		2306	interval => 10,
		2307	cb => sub {
		2308	(Coro::unblock_sub {
		2309	write_runtime
		2310	or warn "ERROR: unable to write runtime file: $!";
		2311	})->();
		2312	},
		2313	);
		2314
		2315	END { cf::emergency_save }
1189		2316
1190	1	2317	1
1191		2318

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