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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 1.143 by root, Sun Jan 7 02:39:14 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
10	use IO::AIO ();	22	use IO::AIO 2.31 ();
11	use YAML::Syck ();	23	use YAML::Syck ();
12	use Time::HiRes;	24	use Time::HiRes;
13	use Event;	25
14	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
15		27
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	29	$YAML::Syck::ImplicitUnicode = 1;
18		30
19	use strict;	31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		32
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		34
23	our %COMMAND = ();	35	our %COMMAND = ();
24	our %COMMAND_TIME = ();	36	our %COMMAND_TIME = ();
25	our %EXTCMD = ();	37	our %EXTCMD = ();
26		38
27	_init_vars;
28
29	our @EVENT;	39	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	40	our $LIBDIR = datadir . "/ext";
31		41
32	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	43	our $TICK_WATCHER;
34	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
35		46
36	our %CFG;	47	our %CFG;
37		48
38	our $UPTIME; $UPTIME ||= time;	49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %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, "cfperl: $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';
…		…
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 path($) {
772	cf::player::find $_[0]	1092	sprintf "%s/%s/%s/%s.pl",
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	cf::localdir, cf::playerdir,
		1094	(ref $_[0] ? $_[0]->ob->name : $_[0]) x 2
774	}	1095	}
		1096
		1097	sub find_active($) {
		1098	$cf::PLAYER{$_[0]}
		1099	and $cf::PLAYER{$_[0]}->active
		1100	and $cf::PLAYER{$_[0]}
		1101	}
		1102
		1103	sub exists($) {
		1104	my ($login) = @_;
		1105
		1106	$cf::PLAYER{$login}
		1107	or cf::sync_job { !aio_stat $login }
		1108	}
		1109
		1110	sub find($) {
		1111	return $cf::PLAYER{$_[0]} || do {
		1112	my $login = $_[0];
		1113
		1114	my $guard = cf::lock_acquire "user_find:$login";
		1115
		1116	$cf::PLAYER{$login} ||= (load_pl path $login or return);
		1117	};
		1118	}
		1119
		1120	sub save($) {
		1121	my ($pl) = @_;
		1122
		1123	return if $pl->{deny_save};
		1124
		1125	my $path = path $pl;
		1126	my $guard = cf::lock_acquire "user_save:$path";
		1127
		1128	return if $pl->{deny_save};
		1129	$pl->{last_save} = $cf::RUNTIME;
		1130
		1131	Coro::cede;
		1132	$pl->save_pl ($path);
		1133	Coro::cede;
		1134	}
		1135
		1136	sub new($) {
		1137	my ($login) = @_;
		1138
		1139	my $self = create;
		1140
		1141	$self->ob->name ($login);
		1142	$self->{deny_save} = 1;
		1143
		1144	$cf::PLAYER{$login} = $self;
		1145
		1146	$self
		1147	}
		1148
		1149	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1150
		1151	Sends an ext reply to the player.
		1152
		1153	=cut
		1154
		1155	sub ext_reply($$$%) {
		1156	my ($self, $id, %msg) = @_;
		1157
		1158	$msg{msgid} = $id;
		1159
		1160	$self->send ("ext " . cf::to_json \%msg);
		1161	}
		1162
		1163	package cf;
		1164
		1165	=back
		1166
		1167
		1168	=head3 cf::map
		1169
		1170	=over 4
		1171
		1172	=cut
		1173
		1174	package cf::map;
		1175
		1176	use Fcntl;
		1177	use Coro::AIO;
		1178
		1179	our $MAX_RESET = 3600;
		1180	our $DEFAULT_RESET = 3000;
		1181
		1182	sub generate_random_map {
		1183	my ($path, $rmp) = @_;
		1184
		1185	# mit "rum" bekleckern, nicht
		1186	cf::map::_create_random_map
		1187	$path,
		1188	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1189	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1190	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1191	$rmp->{exit_on_final_map},
		1192	$rmp->{xsize}, $rmp->{ysize},
		1193	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1194	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1195	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1196	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1197	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1198	(cf::region::find $rmp->{region})
		1199	}
		1200
		1201	# and all this just because we cannot iterate over
		1202	# all maps in C++...
		1203	sub change_all_map_light {
		1204	my ($change) = @_;
		1205
		1206	$_->change_map_light ($change)
		1207	for grep $_->outdoor, values %cf::MAP;
		1208	}
		1209
		1210	sub try_load_header($) {
		1211	my ($path) = @_;
		1212
		1213	utf8::encode $path;
		1214	aio_open $path, O_RDONLY, 0
		1215	or return;
		1216
		1217	my $map = cf::map::new
		1218	or return;
		1219
		1220	# for better error messages only, will be overwritten
		1221	$map->path ($path);
		1222
		1223	$map->load_header ($path)
		1224	or return;
		1225
		1226	$map->{load_path} = $path;
		1227
		1228	$map
		1229	}
		1230
		1231	sub find;
		1232	sub find {
		1233	my ($path, $origin) = @_;
		1234
		1235	#warn "find<$path,$origin>\n";#d#
		1236
		1237	$path = new cf::path $path, $origin && $origin->path;
		1238	my $key = $path->as_string;
		1239
		1240	cf::lock_wait "map_find:$key";
		1241
		1242	$cf::MAP{$key} || do {
		1243	my $guard = cf::lock_acquire "map_find:$key";
		1244
		1245	# do it the slow way
		1246	my $map = try_load_header $path->save_path;
		1247
		1248	Coro::cede;
		1249
		1250	if ($map) {
		1251	$map->last_access ((delete $map->{last_access})
		1252	|| $cf::RUNTIME); #d#
		1253	# safety
		1254	$map->{instantiate_time} = $cf::RUNTIME
		1255	if $map->{instantiate_time} > $cf::RUNTIME;
		1256	} else {
		1257	if (my $rmp = $path->random_map_params) {
		1258	$map = generate_random_map $key, $rmp;
		1259	} else {
		1260	$map = try_load_header $path->load_path;
		1261	}
		1262
		1263	$map or return;
		1264
		1265	$map->{load_original} = 1;
		1266	$map->{instantiate_time} = $cf::RUNTIME;
		1267	$map->last_access ($cf::RUNTIME);
		1268	$map->instantiate;
		1269
		1270	# per-player maps become, after loading, normal maps
		1271	$map->per_player (0) if $path->{user_rel};
		1272	}
		1273
		1274	$map->path ($key);
		1275	$map->{path} = $path;
		1276	$map->{last_save} = $cf::RUNTIME;
		1277
		1278	Coro::cede;
		1279
		1280	if ($map->should_reset) {
		1281	$map->reset;
		1282	undef $guard;
		1283	$map = find $path
		1284	or return;
		1285	}
		1286
		1287	$cf::MAP{$key} = $map
		1288	}
		1289	}
		1290
		1291	sub load {
		1292	my ($self) = @_;
		1293
		1294	my $path = $self->{path};
		1295	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1296
		1297	return if $self->in_memory != cf::MAP_SWAPPED;
		1298
		1299	$self->in_memory (cf::MAP_LOADING);
		1300
		1301	$self->alloc;
		1302	$self->load_objects ($self->{load_path}, 1)
		1303	or return;
		1304
		1305	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1306	if delete $self->{load_original};
		1307
		1308	if (my $uniq = $path->uniq_path) {
		1309	utf8::encode $uniq;
		1310	if (aio_open $uniq, O_RDONLY, 0) {
		1311	$self->clear_unique_items;
		1312	$self->load_objects ($uniq, 0);
		1313	}
		1314	}
		1315
		1316	Coro::cede;
		1317
		1318	# now do the right thing for maps
		1319	$self->link_multipart_objects;
		1320
		1321	if ($self->{path}->is_style_map) {
		1322	$self->{deny_save} = 1;
		1323	$self->{deny_reset} = 1;
		1324	} else {
		1325	$self->fix_auto_apply;
		1326	$self->decay_objects;
		1327	$self->update_buttons;
		1328	$self->set_darkness_map;
		1329	$self->difficulty ($self->estimate_difficulty)
		1330	unless $self->difficulty;
		1331	$self->activate;
		1332	}
		1333
		1334	Coro::cede;
		1335
		1336	$self->in_memory (cf::MAP_IN_MEMORY);
		1337	}
		1338
		1339	sub find_sync {
		1340	my ($path, $origin) = @_;
		1341
		1342	cf::sync_job { cf::map::find $path, $origin }
		1343	}
		1344
		1345	sub do_load_sync {
		1346	my ($map) = @_;
		1347
		1348	cf::sync_job { $map->load };
		1349	}
		1350
		1351	sub save {
		1352	my ($self) = @_;
		1353
		1354	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1355
		1356	$self->{last_save} = $cf::RUNTIME;
		1357
		1358	return unless $self->dirty;
		1359
		1360	my $save = $self->{path}->save_path; utf8::encode $save;
		1361	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1362
		1363	$self->{load_path} = $save;
		1364
		1365	return if $self->{deny_save};
		1366
		1367	local $self->{last_access} = $self->last_access;#d#
		1368
		1369	cf::async {
		1370	$_->contr->save for $self->players;
		1371	};
		1372
		1373	if ($uniq) {
		1374	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1375	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1376	} else {
		1377	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1378	}
		1379	}
		1380
		1381	sub swap_out {
		1382	my ($self) = @_;
		1383
		1384	# save first because save cedes
		1385	$self->save;
		1386
		1387	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1388
		1389	return if $self->players;
		1390	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1391	return if $self->{deny_save};
		1392
		1393	$self->clear;
		1394	$self->in_memory (cf::MAP_SWAPPED);
		1395	}
		1396
		1397	sub reset_at {
		1398	my ($self) = @_;
		1399
		1400	# TODO: safety, remove and allow resettable per-player maps
		1401	return 1e99 if $self->{path}{user_rel};
		1402	return 1e99 if $self->{deny_reset};
		1403
		1404	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1405	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1406
		1407	$time + $to
		1408	}
		1409
		1410	sub should_reset {
		1411	my ($self) = @_;
		1412
		1413	$self->reset_at <= $cf::RUNTIME
		1414	}
		1415
		1416	sub unlink_save {
		1417	my ($self) = @_;
		1418
		1419	utf8::encode (my $save = $self->{path}->save_path);
		1420	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1421	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1422	}
		1423
		1424	sub rename {
		1425	my ($self, $new_path) = @_;
		1426
		1427	$self->unlink_save;
		1428
		1429	delete $cf::MAP{$self->path};
		1430	$self->{path} = new cf::path $new_path;
		1431	$self->path ($self->{path}->as_string);
		1432	$cf::MAP{$self->path} = $self;
		1433
		1434	$self->save;
		1435	}
		1436
		1437	sub reset {
		1438	my ($self) = @_;
		1439
		1440	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1441
		1442	return if $self->players;
		1443	return if $self->{path}{user_rel};#d#
		1444
		1445	warn "resetting map ", $self->path;#d#
		1446
		1447	delete $cf::MAP{$self->path};
		1448
		1449	$_->clear_links_to ($self) for values %cf::MAP;
		1450
		1451	$self->unlink_save;
		1452	$self->destroy;
		1453	}
		1454
		1455	my $nuke_counter = "aaaa";
		1456
		1457	sub nuke {
		1458	my ($self) = @_;
		1459
		1460	$self->{deny_save} = 1;
		1461	$self->reset_timeout (1);
		1462	$self->rename ("{nuke}/" . ($nuke_counter++));
		1463	$self->reset; # polite request, might not happen
		1464	}
		1465
		1466	sub customise_for {
		1467	my ($map, $ob) = @_;
		1468
		1469	if ($map->per_player) {
		1470	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1471	}
		1472
		1473	$map
		1474	}
		1475
		1476	sub emergency_save {
		1477	my $freeze_guard = cf::freeze_mainloop;
		1478
		1479	warn "enter emergency map save\n";
		1480
		1481	cf::sync_job {
		1482	warn "begin emergency map save\n";
		1483	$_->save for values %cf::MAP;
		1484	};
		1485
		1486	warn "end emergency map save\n";
		1487	}
		1488
		1489	package cf;
		1490
		1491	=back
		1492
		1493
		1494	=head3 cf::object::player
		1495
		1496	=over 4
775		1497
776	=item $player_object->reply ($npc, $msg[, $flags])	1498	=item $player_object->reply ($npc, $msg[, $flags])
777		1499
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1500	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	1501	can be C<undef>. Does the right thing when the player is currently in a
…		…
781		1503
782	=cut	1504	=cut
783		1505
784	# rough implementation of a future "reply" method that works	1506	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	1507	# with dialog boxes.
		1508	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	1509	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	1510	my ($self, $npc, $msg, $flags) = @_;
788		1511
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1512	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		1513
…		…
794	$msg = $npc->name . " says: $msg" if $npc;	1517	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	1518	$self->message ($msg, $flags);
796	}	1519	}
797	}	1520	}
798		1521
799	=item $player->ext_reply ($msgid, $msgtype, %msg)
800
801	Sends an ext reply to the player.
802
803	=cut
804
805	sub cf::player::ext_reply($$$%) {
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")	1522	=item $player_object->may ("access")
814		1523
815	Returns wether the given player is authorized to access resource "access"	1524	Returns wether the given player is authorized to access resource "access"
816	(e.g. "command_wizcast").	1525	(e.g. "command_wizcast").
817		1526
…		…
824	(ref $cf::CFG{"may_$access"}	1533	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1534	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1535	: $cf::CFG{"may_$access"})
827	}	1536	}
828		1537
829	=cut	1538	=item $player_object->enter_link
830		1539
831	#############################################################################	1540	Freezes the player and moves him/her to a special map (C<{link}>).
		1541
		1542	The player should be reaosnably safe there for short amounts of time. You
		1543	I<MUST> call C<leave_link> as soon as possible, though.
		1544
		1545	=item $player_object->leave_link ($map, $x, $y)
		1546
		1547	Moves the player out of the specila link map onto the given map. If the
		1548	map is not valid (or omitted), the player will be moved back to the
		1549	location he/she was before the call to C<enter_link>, or, if that fails,
		1550	to the emergency map position.
		1551
		1552	Might block.
		1553
		1554	=cut
		1555
		1556	sub cf::object::player::enter_link {
		1557	my ($self) = @_;
		1558
		1559	$self->deactivate_recursive;
		1560
		1561	return if $self->map == $LINK_MAP;
		1562
		1563	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1564	if $self->map;
		1565
		1566	$self->enter_map ($LINK_MAP, 20, 20);
		1567	}
		1568
		1569	sub cf::object::player::leave_link {
		1570	my ($self, $map, $x, $y) = @_;
		1571
		1572	my $link_pos = delete $self->{_link_pos};
		1573
		1574	unless ($map) {
		1575	# restore original map position
		1576	($map, $x, $y) = @{ $link_pos || [] };
		1577	$map = cf::map::find $map;
		1578
		1579	unless ($map) {
		1580	($map, $x, $y) = @$EMERGENCY_POSITION;
		1581	$map = cf::map::find $map
		1582	or die "FATAL: cannot load emergency map\n";
		1583	}
		1584	}
		1585
		1586	($x, $y) = (-1, -1)
		1587	unless (defined $x) && (defined $y);
		1588
		1589	# use -1 or undef as default coordinates, not 0, 0
		1590	($x, $y) = ($map->enter_x, $map->enter_y)
		1591	if $x <=0 && $y <= 0;
		1592
		1593	$map->load;
		1594
		1595	return unless $self->contr->active;
		1596	$self->activate_recursive;
		1597	$self->enter_map ($map, $x, $y);
		1598	}
		1599
		1600	cf::player->attach (
		1601	on_logout => sub {
		1602	my ($pl) = @_;
		1603
		1604	# abort map switching before logout
		1605	if ($pl->ob->{_link_pos}) {
		1606	cf::sync_job {
		1607	$pl->ob->leave_link
		1608	};
		1609	}
		1610	},
		1611	on_login => sub {
		1612	my ($pl) = @_;
		1613
		1614	# try to abort aborted map switching on player login :)
		1615	# should happen only on crashes
		1616	if ($pl->ob->{_link_pos}) {
		1617	$pl->ob->enter_link;
		1618	(async {
		1619	# we need this sleep as the login has a concurrent enter_exit running
		1620	# and this sleep increases chances of the player not ending up in scorn
		1621	$pl->ob->reply (undef,
		1622	"There was an internal problem at your last logout, "
		1623	. "the server will try to bring you to your intended destination in a second.",
		1624	cf::NDI_RED);
		1625	Coro::Timer::sleep 1;
		1626	$pl->ob->leave_link;
		1627	})->prio (2);
		1628	}
		1629	},
		1630	);
		1631
		1632	=item $player_object->goto ($path, $x, $y)
		1633
		1634	=cut
		1635
		1636	sub cf::object::player::goto {
		1637	my ($self, $path, $x, $y) = @_;
		1638
		1639	$self->enter_link;
		1640
		1641	(async {
		1642	$path = new cf::path $path;
		1643
		1644	my $map = cf::map::find $path->as_string;
		1645	$map = $map->customise_for ($self) if $map;
		1646
		1647	# warn "entering ", $map->path, " at ($x, $y)\n"
		1648	# if $map;
		1649
		1650	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1651
		1652	$self->leave_link ($map, $x, $y);
		1653	})->prio (1);
		1654	}
		1655
		1656	=item $player_object->enter_exit ($exit_object)
		1657
		1658	=cut
		1659
		1660	sub parse_random_map_params {
		1661	my ($spec) = @_;
		1662
		1663	my $rmp = { # defaults
		1664	xsize => 10,
		1665	ysize => 10,
		1666	};
		1667
		1668	for (split /\n/, $spec) {
		1669	my ($k, $v) = split /\s+/, $_, 2;
		1670
		1671	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1672	}
		1673
		1674	$rmp
		1675	}
		1676
		1677	sub prepare_random_map {
		1678	my ($exit) = @_;
		1679
		1680	# all this does is basically replace the /! path by
		1681	# a new random map path (?random/...) with a seed
		1682	# that depends on the exit object
		1683
		1684	my $rmp = parse_random_map_params $exit->msg;
		1685
		1686	if ($exit->map) {
		1687	$rmp->{region} = $exit->map->region_name;
		1688	$rmp->{origin_map} = $exit->map->path;
		1689	$rmp->{origin_x} = $exit->x;
		1690	$rmp->{origin_y} = $exit->y;
		1691	}
		1692
		1693	$rmp->{random_seed} ||= $exit->random_seed;
		1694
		1695	my $data = cf::to_json $rmp;
		1696	my $md5 = Digest::MD5::md5_hex $data;
		1697
		1698	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1699	aio_write $fh, 0, (length $data), $data, 0;
		1700
		1701	$exit->slaying ("?random/$md5");
		1702	$exit->msg (undef);
		1703	}
		1704	}
		1705
		1706	sub cf::object::player::enter_exit {
		1707	my ($self, $exit) = @_;
		1708
		1709	return unless $self->type == cf::PLAYER;
		1710
		1711	$self->enter_link;
		1712
		1713	(async {
		1714	$self->deactivate_recursive; # just to be sure
		1715	unless (eval {
		1716	prepare_random_map $exit
		1717	if $exit->slaying eq "/!";
		1718
		1719	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1720	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1721
		1722	1;
		1723	}) {
		1724	$self->message ("Something went wrong deep within the crossfire server. "
		1725	. "I'll try to bring you back to the map you were before. "
		1726	. "Please report this to the dungeon master",
		1727	cf::NDI_UNIQUE | cf::NDI_RED);
		1728
		1729	warn "ERROR in enter_exit: $@";
		1730	$self->leave_link;
		1731	}
		1732	})->prio (1);
		1733	}
		1734
		1735	=head3 cf::client
		1736
		1737	=over 4
		1738
		1739	=item $client->send_drawinfo ($text, $flags)
		1740
		1741	Sends a drawinfo packet to the client. Circumvents output buffering so
		1742	should not be used under normal circumstances.
		1743
		1744	=cut
		1745
		1746	sub cf::client::send_drawinfo {
		1747	my ($self, $text, $flags) = @_;
		1748
		1749	utf8::encode $text;
		1750	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1751	}
		1752
		1753
		1754	=item $success = $client->query ($flags, "text", \&cb)
		1755
		1756	Queues a query to the client, calling the given callback with
		1757	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1758	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1759
		1760	Queries can fail, so check the return code. Or don't, as queries will become
		1761	reliable at some point in the future.
		1762
		1763	=cut
		1764
		1765	sub cf::client::query {
		1766	my ($self, $flags, $text, $cb) = @_;
		1767
		1768	return unless $self->state == ST_PLAYING
		1769	|| $self->state == ST_SETUP
		1770	|| $self->state == ST_CUSTOM;
		1771
		1772	$self->state (ST_CUSTOM);
		1773
		1774	utf8::encode $text;
		1775	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1776
		1777	$self->send_packet ($self->{query_queue}[0][0])
		1778	if @{ $self->{query_queue} } == 1;
		1779	}
		1780
		1781	cf::client->attach (
		1782	on_reply => sub {
		1783	my ($ns, $msg) = @_;
		1784
		1785	# this weird shuffling is so that direct followup queries
		1786	# get handled first
		1787	my $queue = delete $ns->{query_queue}
		1788	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1789
		1790	(shift @$queue)->[1]->($msg);
		1791
		1792	push @{ $ns->{query_queue} }, @$queue;
		1793
		1794	if (@{ $ns->{query_queue} } == @$queue) {
		1795	if (@$queue) {
		1796	$ns->send_packet ($ns->{query_queue}[0][0]);
		1797	} else {
		1798	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1799	}
		1800	}
		1801	},
		1802	);
		1803
		1804	=item $client->async (\&cb)
		1805
		1806	Create a new coroutine, running the specified callback. The coroutine will
		1807	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1808	or loss of connection).
		1809
		1810	=cut
		1811
		1812	sub cf::client::async {
		1813	my ($self, $cb) = @_;
		1814
		1815	my $coro = &Coro::async ($cb);
		1816
		1817	$coro->on_destroy (sub {
		1818	delete $self->{_coro}{$coro+0};
		1819	});
		1820
		1821	$self->{_coro}{$coro+0} = $coro;
		1822
		1823	$coro
		1824	}
		1825
		1826	cf::client->attach (
		1827	on_destroy => sub {
		1828	my ($ns) = @_;
		1829
		1830	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1831	},
		1832	);
		1833
		1834	=back
		1835
832		1836
833	=head2 SAFE SCRIPTING	1837	=head2 SAFE SCRIPTING
834		1838
835	Functions that provide a safe environment to compile and execute	1839	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	1840	snippets of perl code without them endangering the safety of the server
…		…
988		1992
989	{	1993	{
990	my $path = cf::localdir . "/database.pst";	1994	my $path = cf::localdir . "/database.pst";
991		1995
992	sub db_load() {	1996	sub db_load() {
993	warn "loading database $path\n";#d# remove later
994	$DB = stat $path ? Storable::retrieve $path : { };	1997	$DB = stat $path ? Storable::retrieve $path : { };
995	}	1998	}
996		1999
997	my $pid;	2000	my $pid;
998		2001
999	sub db_save() {	2002	sub db_save() {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;	2003	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {	2004	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;	2005	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";	2006	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;	2007	rename "$path~", $path;
…		…
1053	open my $fh, "<:utf8", cf::confdir . "/config"	2055	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;	2056	or return;
1055		2057
1056	local $/;	2058	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;	2059	*CFG = YAML::Syck::Load <$fh>;
		2060
		2061	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2062
		2063	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2064	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2065
		2066	if (exists $CFG{mlockall}) {
		2067	eval {
		2068	$CFG{mlockall} ? &mlockall : &munlockall
		2069	and die "WARNING: m(un)lockall failed: $!\n";
		2070	};
		2071	warn $@ if $@;
		2072	}
1058	}	2073	}
1059		2074
1060	sub main {	2075	sub main {
		2076	# we must not ever block the main coroutine
		2077	local $Coro::idle = sub {
		2078	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2079	async { Event::one_event };
		2080	};
		2081
1061	cfg_load;	2082	cfg_load;
1062	db_load;	2083	db_load;
1063	load_extensions;	2084	load_extensions;
1064	Event::loop;	2085	Event::loop;
1065	}	2086	}
1066		2087
1067	#############################################################################	2088	#############################################################################
1068	# initialisation	2089	# initialisation
1069		2090
1070	sub _perl_reload(&) {	2091	sub reload() {
1071	my ($msg) = @_;	2092	# can/must only be called in main
		2093	if ($Coro::current != $Coro::main) {
		2094	warn "can only reload from main coroutine\n";
		2095	return;
		2096	}
1072		2097
1073	$msg->("reloading...");	2098	warn "reloading...";
		2099
		2100	my $guard = freeze_mainloop;
		2101	cf::emergency_save;
1074		2102
1075	eval {	2103	eval {
		2104	# if anything goes wrong in here, we should simply crash as we already saved
		2105
1076	# cancel all watchers	2106	# cancel all watchers
1077	for (Event::all_watchers) {	2107	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;	2108	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}	2109	}
1080		2110
		2111	# cancel all extension coros
		2112	$_->cancel for values %EXT_CORO;
		2113	%EXT_CORO = ();
		2114
1081	# unload all extensions	2115	# unload all extensions
1082	for (@exts) {	2116	for (@exts) {
1083	$msg->("unloading <$_>");	2117	warn "unloading <$_>";
1084	unload_extension $_;	2118	unload_extension $_;
1085	}	2119	}
1086		2120
1087	# unload all modules loaded from $LIBDIR	2121	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {	2122	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2123	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090		2124
1091	$msg->("removing <$k>");	2125	warn "removing <$k>";
1092	delete $INC{$k};	2126	delete $INC{$k};
1093		2127
1094	$k =~ s/\.pm$//;	2128	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;	2129	$k =~ s/\//::/g;
1096		2130
…		…
1101	Symbol::delete_package $k;	2135	Symbol::delete_package $k;
1102	}	2136	}
1103		2137
1104	# sync database to disk	2138	# sync database to disk
1105	cf::db_sync;	2139	cf::db_sync;
		2140	IO::AIO::flush;
1106		2141
1107	# get rid of safe::, as good as possible	2142	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"	2143	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2144	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1110		2145
1111	# remove register_script_function callbacks	2146	# remove register_script_function callbacks
1112	# TODO	2147	# TODO
1113		2148
1114	# unload cf.pm "a bit"	2149	# unload cf.pm "a bit"
…		…
1117	# don't, removes xs symbols, too,	2152	# don't, removes xs symbols, too,
1118	# and global variables created in xs	2153	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;	2154	#Symbol::delete_package __PACKAGE__;
1120		2155
1121	# reload cf.pm	2156	# reload cf.pm
1122	$msg->("reloading cf.pm");	2157	warn "reloading cf.pm";
1123	require cf;	2158	require cf;
		2159	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1124		2160
1125	# load config and database again	2161	# load config and database again
1126	cf::cfg_load;	2162	cf::cfg_load;
1127	cf::db_load;	2163	cf::db_load;
1128		2164
1129	# load extensions	2165	# load extensions
1130	$msg->("load extensions");	2166	warn "load extensions";
1131	cf::load_extensions;	2167	cf::load_extensions;
1132		2168
1133	# reattach attachments to objects	2169	# reattach attachments to objects
1134	$msg->("reattach");	2170	warn "reattach";
1135	_global_reattach;	2171	_global_reattach;
1136	};	2172	};
1137	$msg->($@) if $@;
1138		2173
1139	$msg->("reloaded");	2174	if ($@) {
		2175	warn $@;
		2176	warn "error while reloading, exiting.";
		2177	exit 1;
		2178	}
		2179
		2180	warn "reloaded successfully";
1140	};	2181	};
1141		2182
1142	sub perl_reload() {	2183	#############################################################################
1143	_perl_reload {	2184
1144	warn $_[0];	2185	unless ($LINK_MAP) {
1145	print "$_[0]\n";	2186	$LINK_MAP = cf::map::new;
1146	};	2187
		2188	$LINK_MAP->width (41);
		2189	$LINK_MAP->height (41);
		2190	$LINK_MAP->alloc;
		2191	$LINK_MAP->path ("{link}");
		2192	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2193	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2194
		2195	# dirty hack because... archetypes are not yet loaded
		2196	Event->timer (
		2197	after => 10,
		2198	cb => sub {
		2199	$_[0]->w->cancel;
		2200
		2201	# provide some exits "home"
		2202	my $exit = cf::object::new "exit";
		2203
		2204	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2205	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2206	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2207
		2208	$LINK_MAP->insert ($exit->clone, 19, 19);
		2209	$LINK_MAP->insert ($exit->clone, 19, 20);
		2210	$LINK_MAP->insert ($exit->clone, 19, 21);
		2211	$LINK_MAP->insert ($exit->clone, 20, 19);
		2212	$LINK_MAP->insert ($exit->clone, 20, 21);
		2213	$LINK_MAP->insert ($exit->clone, 21, 19);
		2214	$LINK_MAP->insert ($exit->clone, 21, 20);
		2215	$LINK_MAP->insert ($exit->clone, 21, 21);
		2216
		2217	$exit->destroy;
		2218	});
		2219
		2220	$LINK_MAP->{deny_save} = 1;
		2221	$LINK_MAP->{deny_reset} = 1;
		2222
		2223	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1147	}	2224	}
1148		2225
1149	register "<global>", __PACKAGE__;	2226	register "<global>", __PACKAGE__;
1150		2227
1151	register_command "perl-reload" => sub {	2228	register_command "reload" => sub {
1152	my ($who, $arg) = @_;	2229	my ($who, $arg) = @_;
1153		2230
1154	if ($who->flag (FLAG_WIZ)) {	2231	if ($who->flag (FLAG_WIZ)) {
1155	_perl_reload {	2232	$who->message ("start of reload.");
1156	warn $_[0];	2233	reload;
1157	$who->message ($_[0]);	2234	$who->message ("end of reload.");
1158	};
1159	}	2235	}
1160	};	2236	};
1161		2237
1162	unshift @INC, $LIBDIR;	2238	unshift @INC, $LIBDIR;
1163		2239
1164	$TICK_WATCHER = Event->timer (	2240	$TICK_WATCHER = Event->timer (
		2241	reentrant => 0,
1165	prio => 0,	2242	prio => 0,
1166	at => $NEXT_TICK || 1,	2243	at => $NEXT_TICK || $TICK,
1167	data => WF_AUTOCANCEL,	2244	data => WF_AUTOCANCEL,
1168	cb => sub {	2245	cb => sub {
1169	cf::server_tick; # one server iteration	2246	cf::server_tick; # one server iteration
1170		2247	$RUNTIME += $TICK;
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;	2248	$NEXT_TICK += $TICK;
1173		2249
1174	# if we are delayed by four ticks or more, skip them all	2250	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2251	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1176		2252
1177	$TICK_WATCHER->at ($NEXT_TICK);	2253	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;	2254	$TICK_WATCHER->start;
1179	},	2255	},
1180	);	2256	);
1181		2257
1182	IO::AIO::max_poll_time $TICK * 0.2;	2258	IO::AIO::max_poll_time $TICK * 0.2;
1183		2259
		2260	Event->io (
1184	Event->io (fd => IO::AIO::poll_fileno,	2261	fd => IO::AIO::poll_fileno,
1185	poll => 'r',	2262	poll => 'r',
1186	prio => 5,	2263	prio => 5,
1187	data => WF_AUTOCANCEL,	2264	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);	2265	cb => \&IO::AIO::poll_cb,
		2266	);
		2267
		2268	Event->timer (
		2269	data => WF_AUTOCANCEL,
		2270	after => 0,
		2271	interval => 10,
		2272	cb => sub {
		2273	(Coro::unblock_sub {
		2274	write_runtime
		2275	or warn "ERROR: unable to write runtime file: $!";
		2276	})->();
		2277	},
		2278	);
		2279
		2280	END { cf::emergency_save }
1189		2281
1190	1	2282	1
1191		2283

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