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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 1.154 by root, Tue Jan 9 15:36:19 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 Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
10	use IO::AIO ();	23	use IO::AIO 2.32 ();
11	use YAML::Syck ();	24	use YAML::Syck ();
12	use Time::HiRes;	25	use Time::HiRes;
13	use Event;	26
14	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
15		28
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	29	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	30	$YAML::Syck::ImplicitUnicode = 1;
18		31
19	use strict;	32	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		33
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	34	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		35
23	our %COMMAND = ();	36	our %COMMAND = ();
24	our %COMMAND_TIME = ();	37	our %COMMAND_TIME = ();
25	our %EXTCMD = ();	38	our %EXTCMD = ();
26		39
27	_init_vars;
28
29	our @EVENT;	40	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	41	our $LIBDIR = datadir . "/ext";
31		42
32	our $TICK = MAX_TIME * 1e-6;	43	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	44	our $TICK_WATCHER;
34	our $NEXT_TICK;	45	our $NEXT_TICK;
		46	our $NOW;
35		47
36	our %CFG;	48	our %CFG;
37		49
38	our $UPTIME; $UPTIME ||= time;	50	our $UPTIME; $UPTIME ||= time;
		51	our $RUNTIME;
		52
		53	our %PLAYER; # all users
		54	our %MAP; # all maps
		55	our $LINK_MAP; # the special {link} map
		56	our $RANDOM_MAPS = cf::localdir . "/random";
		57	our %EXT_CORO; # coroutines bound to extensions
		58
		59	binmode STDOUT;
		60	binmode STDERR;
		61
		62	# read virtual server time, if available
		63	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		64	open my $fh, "<", cf::localdir . "/runtime"
		65	or die "unable to read runtime file: $!";
		66	$RUNTIME = <$fh> + 0.;
		67	}
		68
		69	mkdir cf::localdir;
		70	mkdir cf::localdir . "/" . cf::playerdir;
		71	mkdir cf::localdir . "/" . cf::tmpdir;
		72	mkdir cf::localdir . "/" . cf::uniquedir;
		73	mkdir $RANDOM_MAPS;
		74
		75	# a special map that is always available
		76	our $LINK_MAP;
		77	our $EMERGENCY_POSITION;
39		78
40	#############################################################################	79	#############################################################################
41		80
42	=head2 GLOBAL VARIABLES	81	=head2 GLOBAL VARIABLES
43		82
44	=over 4	83	=over 4
45		84
46	=item $cf::UPTIME	85	=item $cf::UPTIME
47		86
48	The timestamp of the server start (so not actually an uptime).	87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
49		93
50	=item $cf::LIBDIR	94	=item $cf::LIBDIR
51		95
52	The perl library directory, where extensions and cf-specific modules can	96	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
54		102
55	=item $cf::TICK	103	=item $cf::TICK
56		104
57	The interval between server ticks, in seconds.	105	The interval between server ticks, in seconds.
58		106
…		…
66	=cut	114	=cut
67		115
68	BEGIN {	116	BEGIN {
69	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
71	$msg .= "\n"	121	$msg .= "\n"
72	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
73		123
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	124	LOG llevError, $msg;
76	};	125	};
77	}	126	}
78		127
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		134
86	# we bless all objects into (empty) derived classes to force a method lookup	135	# we bless all objects into (empty) derived classes to force a method lookup
87	# within the Safe compartment.	136	# within the Safe compartment.
88	for my $pkg (qw(	137	for my $pkg (qw(
89	cf::global	138	cf::global cf::attachable
90	cf::object cf::object::player	139	cf::object cf::object::player
91	cf::client cf::player	140	cf::client cf::player
92	cf::arch cf::living	141	cf::arch cf::living
93	cf::map cf::party cf::region	142	cf::map cf::party cf::region
94	)) {	143	)) {
…		…
106		155
107	=head2 UTILITY FUNCTIONS	156	=head2 UTILITY FUNCTIONS
108		157
109	=over 4	158	=over 4
110		159
		160	=item dumpval $ref
		161
111	=cut	162	=cut
		163
		164	sub dumpval {
		165	eval {
		166	local $SIG{__DIE__};
		167	my $d;
		168	if (1) {
		169	$d = new Data::Dumper([$_[0]], ["*var"]);
		170	$d->Terse(1);
		171	$d->Indent(2);
		172	$d->Quotekeys(0);
		173	$d->Useqq(1);
		174	#$d->Bless(...);
		175	$d->Seen($_[1]) if @_ > 1;
		176	$d = $d->Dump();
		177	}
		178	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		179	$d
		180	} || "[unable to dump $_[0]: '$@']";
		181	}
112		182
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	183	use JSON::Syck (); # TODO# replace by JSON::PC once working
114		184
115	=item $ref = cf::from_json $json	185	=item $ref = cf::from_json $json
116		186
…		…
132	sub to_json($) {	202	sub to_json($) {
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	203	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
134	JSON::Syck::Dump $_[0]	204	JSON::Syck::Dump $_[0]
135	}	205	}
136		206
		207	=item cf::lock_wait $string
		208
		209	Wait until the given lock is available. See cf::lock_acquire.
		210
		211	=item my $lock = cf::lock_acquire $string
		212
		213	Wait until the given lock is available and then acquires it and returns
		214	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		215	for example when the coroutine gets canceled), the lock is automatically
		216	returned.
		217
		218	Lock names should begin with a unique identifier (for example, cf::map::find
		219	uses map_find and cf::map::load uses map_load).
		220
		221	=cut
		222
		223	our %LOCK;
		224
		225	sub lock_wait($) {
		226	my ($key) = @_;
		227
		228	# wait for lock, if any
		229	while ($LOCK{$key}) {
		230	push @{ $LOCK{$key} }, $Coro::current;
		231	Coro::schedule;
		232	}
		233	}
		234
		235	sub lock_acquire($) {
		236	my ($key) = @_;
		237
		238	# wait, to be sure we are not locked
		239	lock_wait $key;
		240
		241	$LOCK{$key} = [];
		242
		243	Coro::guard {
		244	# wake up all waiters, to be on the safe side
		245	$_->ready for @{ delete $LOCK{$key} };
		246	}
		247	}
		248
		249	sub freeze_mainloop {
		250	return unless $TICK_WATCHER->is_active;
		251
		252	my $guard = Coro::guard { $TICK_WATCHER->start };
		253	$TICK_WATCHER->stop;
		254	$guard
		255	}
		256
		257	=item cf::async { BLOCK }
		258
		259	Currently the same as Coro::async_pool, meaning you cannot use
		260	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		261	thing you are allowed to do is call C<prio> on it.
		262
		263	=cut
		264
		265	BEGIN { *async = \&Coro::async_pool }
		266
		267	=item cf::sync_job { BLOCK }
		268
		269	The design of crossfire+ requires that the main coro ($Coro::main) is
		270	always able to handle events or runnable, as crossfire+ is only partly
		271	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		272
		273	If it must be done, put the blocking parts into C<sync_job>. This will run
		274	the given BLOCK in another coroutine while waiting for the result. The
		275	server will be frozen during this time, so the block should either finish
		276	fast or be very important.
		277
		278	=cut
		279
		280	sub sync_job(&) {
		281	my ($job) = @_;
		282
		283	if ($Coro::current == $Coro::main) {
		284	# this is the main coro, too bad, we have to block
		285	# till the operation succeeds, freezing the server :/
		286
		287	# TODO: use suspend/resume instead
		288	# (but this is cancel-safe)
		289	my $freeze_guard = freeze_mainloop;
		290
		291	my $busy = 1;
		292	my @res;
		293
		294	(async {
		295	@res = eval { $job->() };
		296	warn $@ if $@;
		297	undef $busy;
		298	})->prio (Coro::PRIO_MAX);
		299
		300	while ($busy) {
		301	Coro::cede or Event::one_event;
		302	}
		303
		304	wantarray ? @res : $res[0]
		305	} else {
		306	# we are in another coroutine, how wonderful, everything just works
		307
		308	$job->()
		309	}
		310	}
		311
		312	=item $coro = cf::async_ext { BLOCK }
		313
		314	Like async, but this coro is automcatially being canceled when the
		315	extension calling this is being unloaded.
		316
		317	=cut
		318
		319	sub async_ext(&) {
		320	my $cb = shift;
		321
		322	my $coro = &Coro::async ($cb);
		323
		324	$coro->on_destroy (sub {
		325	delete $EXT_CORO{$coro+0};
		326	});
		327	$EXT_CORO{$coro+0} = $coro;
		328
		329	$coro
		330	}
		331
		332	sub write_runtime {
		333	my $runtime = cf::localdir . "/runtime";
		334
		335	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		336	or return;
		337
		338	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		339	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		340	and return;
		341
		342	aio_fsync $fh
		343	and return;
		344
		345	close $fh
		346	or return;
		347
		348	aio_rename "$runtime~", $runtime
		349	and return;
		350
		351	1
		352	}
		353
137	=back	354	=back
138		355
139	=cut	356	=cut
		357
		358	#############################################################################
		359
		360	package cf::path;
		361
		362	# used to convert map paths into valid unix filenames by repalcing / by ∕
		363	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		364
		365	sub new {
		366	my ($class, $path, $base) = @_;
		367
		368	$path = $path->as_string if ref $path;
		369
		370	my $self = bless { }, $class;
		371
		372	# {... are special paths that are not touched
		373	# ?xxx/... are special absolute paths
		374	# ?random/... random maps
		375	# /! non-realised random map exit
		376	# /... normal maps
		377	# ~/... per-player maps without a specific player (DO NOT USE)
		378	# ~user/... per-player map of a specific user
		379
		380	if ($path =~ /^{/) {
		381	# fine as it is
		382	} elsif ($path =~ s{^\?random/}{}) {
		383	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		384	$self->{random} = cf::from_json $data;
		385	} else {
		386	if ($path =~ s{^~([^/]+)?}{}) {
		387	$self->{user_rel} = 1;
		388
		389	if (defined $1) {
		390	$self->{user} = $1;
		391	} elsif ($base =~ m{^~([^/]+)/}) {
		392	$self->{user} = $1;
		393	} else {
		394	warn "cannot resolve user-relative path without user <$path,$base>\n";
		395	}
		396	} elsif ($path =~ /^\//) {
		397	# already absolute
		398	} else {
		399	$base =~ s{[^/]+/?$}{};
		400	return $class->new ("$base/$path");
		401	}
		402
		403	for ($path) {
		404	redo if s{/\.?/}{/};
		405	redo if s{/[^/]+/\.\./}{/};
		406	}
		407	}
		408
		409	$self->{path} = $path;
		410
		411	$self
		412	}
		413
		414	# the name / primary key / in-game path
		415	sub as_string {
		416	my ($self) = @_;
		417
		418	$self->{user_rel} ? "~$self->{user}$self->{path}"
		419	: $self->{random} ? "?random/$self->{path}"
		420	: $self->{path}
		421	}
		422
		423	# the displayed name, this is a one way mapping
		424	sub visible_name {
		425	my ($self) = @_;
		426
		427	# if (my $rmp = $self->{random}) {
		428	# # todo: be more intelligent about this
		429	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		430	# } else {
		431	$self->as_string
		432	# }
		433	}
		434
		435	# escape the /'s in the path
		436	sub _escaped_path {
		437	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		438	$path
		439	}
		440
		441	# the original (read-only) location
		442	sub load_path {
		443	my ($self) = @_;
		444
		445	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		446	}
		447
		448	# the temporary/swap location
		449	sub save_path {
		450	my ($self) = @_;
		451
		452	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		453	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		454	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		455	}
		456
		457	# the unique path, might be eq to save_path
		458	sub uniq_path {
		459	my ($self) = @_;
		460
		461	$self->{user_rel} || $self->{random}
		462	? undef
		463	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		464	}
		465
		466	# return random map parameters, or undef
		467	sub random_map_params {
		468	my ($self) = @_;
		469
		470	$self->{random}
		471	}
		472
		473	# this is somewhat ugly, but style maps do need special treatment
		474	sub is_style_map {
		475	$_[0]{path} =~ m{^/styles/}
		476	}
		477
		478	package cf;
140		479
141	#############################################################################	480	#############################################################################
142		481
143	=head2 ATTACHABLE OBJECTS	482	=head2 ATTACHABLE OBJECTS
144		483
…		…
249	my ($self, $victim) = @_;	588	my ($self, $victim) = @_;
250	...	589	...
251	}	590	}
252	}	591	}
253		592
		593	=item $attachable->valid
		594
		595	Just because you have a perl object does not mean that the corresponding
		596	C-level object still exists. If you try to access an object that has no
		597	valid C counterpart anymore you get an exception at runtime. This method
		598	can be used to test for existence of the C object part without causing an
		599	exception.
		600
254	=cut	601	=cut
255		602
256	# the following variables are defined in .xs and must not be re-created	603	# the following variables are defined in .xs and must not be re-created
257	our @CB_GLOBAL = (); # registry for all global events	604	our @CB_GLOBAL = (); # registry for all global events
		605	our @CB_ATTACHABLE = (); # registry for all attachables
258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	606	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
259	our @CB_PLAYER = ();	607	our @CB_PLAYER = ();
260	our @CB_CLIENT = ();	608	our @CB_CLIENT = ();
261	our @CB_TYPE = (); # registry for type (cf-object class) based events	609	our @CB_TYPE = (); # registry for type (cf-object class) based events
262	our @CB_MAP = ();	610	our @CB_MAP = ();
263		611
264	my %attachment;	612	my %attachment;
265		613
266	sub _attach_cb($$$$) {	614	sub _attach_cb($$$$) {
267	my ($registry, $event, $prio, $cb) = @_;	615	my ($registry, $event, $prio, $cb) = @_;
…		…
272		620
273	@{$registry->[$event]} = sort	621	@{$registry->[$event]} = sort
274	{ $a->[0] cmp $b->[0] }	622	{ $a->[0] cmp $b->[0] }
275	@{$registry->[$event] || []}, $cb;	623	@{$registry->[$event] || []}, $cb;
276	}	624	}
		625
		626	# hack
		627	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
277		628
278	# attach handles attaching event callbacks	629	# attach handles attaching event callbacks
279	# the only thing the caller has to do is pass the correct	630	# the only thing the caller has to do is pass the correct
280	# registry (== where the callback attaches to).	631	# registry (== where the callback attaches to).
281	sub _attach {	632	sub _attach {
…		…
283		634
284	my $object_type;	635	my $object_type;
285	my $prio = 0;	636	my $prio = 0;
286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	637	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
287		638
		639	#TODO: get rid of this hack
		640	if ($attachable_klass{$klass}) {
		641	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		642	}
		643
288	while (@arg) {	644	while (@arg) {
289	my $type = shift @arg;	645	my $type = shift @arg;
290		646
291	if ($type eq "prio") {	647	if ($type eq "prio") {
292	$prio = shift @arg;	648	$prio = shift @arg;
…		…
367	my ($obj, $name) = @_;	723	my ($obj, $name) = @_;
368		724
369	exists $obj->{_attachment}{$name}	725	exists $obj->{_attachment}{$name}
370	}	726	}
371		727
372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	728	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
373	eval "#line " . __LINE__ . " 'cf.pm'	729	eval "#line " . __LINE__ . " 'cf.pm'
374	sub cf::\L$klass\E::_attach_registry {	730	sub cf::\L$klass\E::_attach_registry {
375	(\\\@CB_$klass, KLASS_$klass)	731	(\\\@CB_$klass, KLASS_$klass)
376	}	732	}
377		733
…		…
413	}	769	}
414		770
415	0	771	0
416	}	772	}
417		773
418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	774	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
419		775
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, ...)	776	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
425		777
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.	778	Generate an object-specific event with the given arguments.
429		779
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	780	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	781	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).	782	results (if you must, access C<@cf::invoke_results> directly).
433		783
434	=back	784	=back
435		785
436	=cut	786	=cut
437		787
438	#############################################################################	788	#############################################################################
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	789	# object support
460		790
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 {	791	sub reattach {
		792	# basically do the same as instantiate, without calling instantiate
475	my ($obj) = @_;	793	my ($obj) = @_;
		794
476	my $registry = $obj->registry;	795	my $registry = $obj->registry;
477		796
478	@$registry = ();	797	@$registry = ();
479		798
480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	799	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
489	warn "object uses attachment '$name' that is not available, postponing.\n";	808	warn "object uses attachment '$name' that is not available, postponing.\n";
490	}	809	}
491	}	810	}
492	}	811	}
493		812
494	sub object_freezer_save {	813	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	$$rdata . Dumper $objs
531	}
532
533	sub object_thawer_load {
534	my ($filename) = @_;
535
536	local $/;
537
538	my $av;
539
540	#TODO: use sysread etc.
541	if (open my $data, "<:raw:perlio", $filename) {
542	$data = <$data>;
543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
544	$av = eval { (Storable::thaw <$pst>)->{objs} };
545	}
546	return ($data, $av);
547	}
548
549	()
550	}
551
552	cf::object->attach (
553	prio => -1000000,	814	prio => -1000000,
		815	on_instantiate => sub {
		816	my ($obj, $data) = @_;
		817
		818	$data = from_json $data;
		819
		820	for (@$data) {
		821	my ($name, $args) = @$_;
		822
		823	$obj->attach ($name, %{$args || {} });
		824	}
		825	},
		826	on_reattach => \&reattach,
554	on_clone => sub {	827	on_clone => sub {
555	my ($src, $dst) = @_;	828	my ($src, $dst) = @_;
556		829
557	@{$dst->registry} = @{$src->registry};	830	@{$dst->registry} = @{$src->registry};
558		831
…		…
560		833
561	%{$dst->{_attachment}} = %{$src->{_attachment}}	834	%{$dst->{_attachment}} = %{$src->{_attachment}}
562	if exists $src->{_attachment};	835	if exists $src->{_attachment};
563	},	836	},
564	);	837	);
		838
		839	sub object_freezer_save {
		840	my ($filename, $rdata, $objs) = @_;
		841
		842	sync_job {
		843	if (length $$rdata) {
		844	warn sprintf "saving %s (%d,%d)\n",
		845	$filename, length $$rdata, scalar @$objs;
		846
		847	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		848	chmod SAVE_MODE, $fh;
		849	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		850	aio_fsync $fh;
		851	close $fh;
		852
		853	if (@$objs) {
		854	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		855	chmod SAVE_MODE, $fh;
		856	my $data = Storable::nfreeze { version => 1, objs => $objs };
		857	aio_write $fh, 0, (length $data), $data, 0;
		858	aio_fsync $fh;
		859	close $fh;
		860	aio_rename "$filename.pst~", "$filename.pst";
		861	}
		862	} else {
		863	aio_unlink "$filename.pst";
		864	}
		865
		866	aio_rename "$filename~", $filename;
		867	} else {
		868	warn "FATAL: $filename~: $!\n";
		869	}
		870	} else {
		871	aio_unlink $filename;
		872	aio_unlink "$filename.pst";
		873	}
		874	}
		875	}
		876
		877	sub object_freezer_as_string {
		878	my ($rdata, $objs) = @_;
		879
		880	use Data::Dumper;
		881
		882	$$rdata . Dumper $objs
		883	}
		884
		885	sub object_thawer_load {
		886	my ($filename) = @_;
		887
		888	my ($data, $av);
		889
		890	(aio_load $filename, $data) >= 0
		891	or return;
		892
		893	unless (aio_stat "$filename.pst") {
		894	(aio_load "$filename.pst", $av) >= 0
		895	or return;
		896	$av = eval { (Storable::thaw $av)->{objs} };
		897	}
		898
		899	warn sprintf "loading %s (%d)\n",
		900	$filename, length $data, scalar @{$av || []};#d#
		901	return ($data, $av);
		902	}
565		903
566	#############################################################################	904	#############################################################################
567	# command handling &c	905	# command handling &c
568		906
569	=item cf::register_command $name => \&callback($ob,$args);	907	=item cf::register_command $name => \&callback($ob,$args);
…		…
758		1096
759	=head2 CORE EXTENSIONS	1097	=head2 CORE EXTENSIONS
760		1098
761	Functions and methods that extend core crossfire objects.	1099	Functions and methods that extend core crossfire objects.
762		1100
		1101	=cut
		1102
		1103	package cf::player;
		1104
		1105	use Coro::AIO;
		1106
		1107	=head3 cf::player
		1108
763	=over 4	1109	=over 4
764		1110
765	=item cf::player::exists $login	1111	=item cf::player::find $login
766		1112
767	Returns true when the given account exists.	1113	Returns the given player object, loading it if necessary (might block).
768		1114
769	=cut	1115	=cut
770		1116
771	sub cf::player::exists($) {	1117	sub playerdir($) {
772	cf::player::find $_[0]	1118	cf::localdir
773	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1119	. "/"
		1120	. cf::playerdir
		1121	. "/"
		1122	. (ref $_[0] ? $_[0]->ob->name : $_[0])
774	}	1123	}
		1124
		1125	sub path($) {
		1126	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1127
		1128	(playerdir $login) . "/$login.pl"
		1129	}
		1130
		1131	sub find_active($) {
		1132	$cf::PLAYER{$_[0]}
		1133	and $cf::PLAYER{$_[0]}->active
		1134	and $cf::PLAYER{$_[0]}
		1135	}
		1136
		1137	sub exists($) {
		1138	my ($login) = @_;
		1139
		1140	$cf::PLAYER{$login}
		1141	or cf::sync_job { !aio_stat $login }
		1142	}
		1143
		1144	sub find($) {
		1145	return $cf::PLAYER{$_[0]} || do {
		1146	my $login = $_[0];
		1147
		1148	my $guard = cf::lock_acquire "user_find:$login";
		1149
		1150	$cf::PLAYER{$_[0]} || do {
		1151	my $pl = load_pl path $login
		1152	or return;
		1153	$cf::PLAYER{$login} = $pl
		1154	}
		1155	}
		1156	}
		1157
		1158	sub save($) {
		1159	my ($pl) = @_;
		1160
		1161	return if $pl->{deny_save};
		1162
		1163	my $path = path $pl;
		1164	my $guard = cf::lock_acquire "user_save:$path";
		1165
		1166	return if $pl->{deny_save};
		1167
		1168	aio_mkdir playerdir $pl, 0770;
		1169	$pl->{last_save} = $cf::RUNTIME;
		1170
		1171	$pl->save_pl ($path);
		1172	Coro::cede;
		1173	}
		1174
		1175	sub new($) {
		1176	my ($login) = @_;
		1177
		1178	my $self = create;
		1179
		1180	$self->ob->name ($login);
		1181	$self->{deny_save} = 1;
		1182
		1183	$cf::PLAYER{$login} = $self;
		1184
		1185	$self
		1186	}
		1187
		1188	=item $pl->quit_character
		1189
		1190	Nukes the player without looking back. If logged in, the connection will
		1191	be destroyed. May block for a long time.
		1192
		1193	=cut
		1194
		1195	sub quit_character {
		1196	my ($pl) = @_;
		1197
		1198	$pl->{deny_save} = 1;
		1199	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1200
		1201	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1202	$pl->deactivate;
		1203	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1204	$pl->ns->destroy if $pl->ns;
		1205
		1206	my $path = playerdir $pl;
		1207	my $temp = "$path~$cf::RUNTIME~deleting~";
		1208	aio_rename $path, $temp;
		1209	delete $cf::PLAYER{$pl->ob->name};
		1210	$pl->destroy;
		1211	IO::AIO::aio_rmtree $temp;
		1212	}
		1213
		1214	=item cf::player::list_logins
		1215
		1216	Returns am arrayref of all valid playernames in the system, can take a
		1217	while and may block, so not sync_job-capable, ever.
		1218
		1219	=cut
		1220
		1221	sub list_logins {
		1222	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1223	or return [];
		1224
		1225	my @logins;
		1226
		1227	for my $login (@$dirs) {
		1228	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1229	aio_read $fh, 0, 512, my $buf, 0 or next;
		1230	$buf !~ /^password -------------$/ or next; # official not-valid tag
		1231
		1232	utf8::decode $login;
		1233	push @logins, $login;
		1234	}
		1235
		1236	\@logins
		1237	}
		1238
		1239	=item $player->maps
		1240
		1241	Returns an arrayref of cf::path's of all maps that are private for this
		1242	player. May block.
		1243
		1244	=cut
		1245
		1246	sub maps($) {
		1247	my ($pl) = @_;
		1248
		1249	my $files = aio_readdir playerdir $pl
		1250	or return;
		1251
		1252	my @paths;
		1253
		1254	for (@$files) {
		1255	utf8::decode $_;
		1256	next if /\.(?:pl|pst)$/;
		1257	next unless /^$PATH_SEP/;
		1258
		1259	s/$PATH_SEP/\//g;
		1260	push @paths, new cf::path "~" . $pl->ob->name . "/" . $_;
		1261	}
		1262
		1263	\@paths
		1264	}
		1265
		1266	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1267
		1268	Sends an ext reply to the player.
		1269
		1270	=cut
		1271
		1272	sub ext_reply($$$%) {
		1273	my ($self, $id, %msg) = @_;
		1274
		1275	$msg{msgid} = $id;
		1276
		1277	$self->send ("ext " . cf::to_json \%msg);
		1278	}
		1279
		1280	package cf;
		1281
		1282	=back
		1283
		1284
		1285	=head3 cf::map
		1286
		1287	=over 4
		1288
		1289	=cut
		1290
		1291	package cf::map;
		1292
		1293	use Fcntl;
		1294	use Coro::AIO;
		1295
		1296	our $MAX_RESET = 3600;
		1297	our $DEFAULT_RESET = 3000;
		1298
		1299	sub generate_random_map {
		1300	my ($path, $rmp) = @_;
		1301
		1302	# mit "rum" bekleckern, nicht
		1303	cf::map::_create_random_map
		1304	$path,
		1305	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1306	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1307	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1308	$rmp->{exit_on_final_map},
		1309	$rmp->{xsize}, $rmp->{ysize},
		1310	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1311	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1312	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1313	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1314	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1315	(cf::region::find $rmp->{region})
		1316	}
		1317
		1318	# and all this just because we cannot iterate over
		1319	# all maps in C++...
		1320	sub change_all_map_light {
		1321	my ($change) = @_;
		1322
		1323	$_->change_map_light ($change)
		1324	for grep $_->outdoor, values %cf::MAP;
		1325	}
		1326
		1327	sub try_load_header($) {
		1328	my ($path) = @_;
		1329
		1330	utf8::encode $path;
		1331	aio_open $path, O_RDONLY, 0
		1332	or return;
		1333
		1334	my $map = cf::map::new
		1335	or return;
		1336
		1337	# for better error messages only, will be overwritten
		1338	$map->path ($path);
		1339
		1340	$map->load_header ($path)
		1341	or return;
		1342
		1343	$map->{load_path} = $path;
		1344
		1345	$map
		1346	}
		1347
		1348	sub find;
		1349	sub find {
		1350	my ($path, $origin) = @_;
		1351
		1352	#warn "find<$path,$origin>\n";#d#
		1353
		1354	$path = new cf::path $path, $origin && $origin->path;
		1355	my $key = $path->as_string;
		1356
		1357	cf::lock_wait "map_find:$key";
		1358
		1359	$cf::MAP{$key} || do {
		1360	my $guard = cf::lock_acquire "map_find:$key";
		1361
		1362	# do it the slow way
		1363	my $map = try_load_header $path->save_path;
		1364
		1365	Coro::cede;
		1366
		1367	if ($map) {
		1368	$map->last_access ((delete $map->{last_access})
		1369	|| $cf::RUNTIME); #d#
		1370	# safety
		1371	$map->{instantiate_time} = $cf::RUNTIME
		1372	if $map->{instantiate_time} > $cf::RUNTIME;
		1373	} else {
		1374	if (my $rmp = $path->random_map_params) {
		1375	$map = generate_random_map $key, $rmp;
		1376	} else {
		1377	$map = try_load_header $path->load_path;
		1378	}
		1379
		1380	$map or return;
		1381
		1382	$map->{load_original} = 1;
		1383	$map->{instantiate_time} = $cf::RUNTIME;
		1384	$map->last_access ($cf::RUNTIME);
		1385	$map->instantiate;
		1386
		1387	# per-player maps become, after loading, normal maps
		1388	$map->per_player (0) if $path->{user_rel};
		1389	}
		1390
		1391	$map->path ($key);
		1392	$map->{path} = $path;
		1393	$map->{last_save} = $cf::RUNTIME;
		1394
		1395	Coro::cede;
		1396
		1397	if ($map->should_reset) {
		1398	$map->reset;
		1399	undef $guard;
		1400	$map = find $path
		1401	or return;
		1402	}
		1403
		1404	$cf::MAP{$key} = $map
		1405	}
		1406	}
		1407
		1408	sub load {
		1409	my ($self) = @_;
		1410
		1411	my $path = $self->{path};
		1412	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1413
		1414	return if $self->in_memory != cf::MAP_SWAPPED;
		1415
		1416	$self->in_memory (cf::MAP_LOADING);
		1417
		1418	$self->alloc;
		1419	$self->load_objects ($self->{load_path}, 1)
		1420	or return;
		1421
		1422	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1423	if delete $self->{load_original};
		1424
		1425	if (my $uniq = $path->uniq_path) {
		1426	utf8::encode $uniq;
		1427	if (aio_open $uniq, O_RDONLY, 0) {
		1428	$self->clear_unique_items;
		1429	$self->load_objects ($uniq, 0);
		1430	}
		1431	}
		1432
		1433	Coro::cede;
		1434
		1435	# now do the right thing for maps
		1436	$self->link_multipart_objects;
		1437
		1438	if ($self->{path}->is_style_map) {
		1439	$self->{deny_save} = 1;
		1440	$self->{deny_reset} = 1;
		1441	} else {
		1442	$self->fix_auto_apply;
		1443	$self->decay_objects;
		1444	$self->update_buttons;
		1445	$self->set_darkness_map;
		1446	$self->difficulty ($self->estimate_difficulty)
		1447	unless $self->difficulty;
		1448	$self->activate;
		1449	}
		1450
		1451	Coro::cede;
		1452
		1453	$self->in_memory (cf::MAP_IN_MEMORY);
		1454	}
		1455
		1456	sub find_sync {
		1457	my ($path, $origin) = @_;
		1458
		1459	cf::sync_job { cf::map::find $path, $origin }
		1460	}
		1461
		1462	sub do_load_sync {
		1463	my ($map) = @_;
		1464
		1465	cf::sync_job { $map->load };
		1466	}
		1467
		1468	sub save {
		1469	my ($self) = @_;
		1470
		1471	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1472
		1473	$self->{last_save} = $cf::RUNTIME;
		1474
		1475	return unless $self->dirty;
		1476
		1477	my $save = $self->{path}->save_path; utf8::encode $save;
		1478	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1479
		1480	$self->{load_path} = $save;
		1481
		1482	return if $self->{deny_save};
		1483
		1484	local $self->{last_access} = $self->last_access;#d#
		1485
		1486	cf::async {
		1487	$_->contr->save for $self->players;
		1488	};
		1489
		1490	if ($uniq) {
		1491	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1492	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1493	} else {
		1494	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1495	}
		1496	}
		1497
		1498	sub swap_out {
		1499	my ($self) = @_;
		1500
		1501	# save first because save cedes
		1502	$self->save;
		1503
		1504	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1505
		1506	return if $self->players;
		1507	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1508	return if $self->{deny_save};
		1509
		1510	$self->clear;
		1511	$self->in_memory (cf::MAP_SWAPPED);
		1512	}
		1513
		1514	sub reset_at {
		1515	my ($self) = @_;
		1516
		1517	# TODO: safety, remove and allow resettable per-player maps
		1518	return 1e99 if $self->{path}{user_rel};
		1519	return 1e99 if $self->{deny_reset};
		1520
		1521	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1522	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1523
		1524	$time + $to
		1525	}
		1526
		1527	sub should_reset {
		1528	my ($self) = @_;
		1529
		1530	$self->reset_at <= $cf::RUNTIME
		1531	}
		1532
		1533	sub unlink_save {
		1534	my ($self) = @_;
		1535
		1536	utf8::encode (my $save = $self->{path}->save_path);
		1537	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1538	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1539	}
		1540
		1541	sub rename {
		1542	my ($self, $new_path) = @_;
		1543
		1544	$self->unlink_save;
		1545
		1546	delete $cf::MAP{$self->path};
		1547	$self->{path} = new cf::path $new_path;
		1548	$self->path ($self->{path}->as_string);
		1549	$cf::MAP{$self->path} = $self;
		1550
		1551	$self->save;
		1552	}
		1553
		1554	sub reset {
		1555	my ($self) = @_;
		1556
		1557	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1558
		1559	return if $self->players;
		1560	return if $self->{path}{user_rel};#d#
		1561
		1562	warn "resetting map ", $self->path;#d#
		1563
		1564	delete $cf::MAP{$self->path};
		1565
		1566	$_->clear_links_to ($self) for values %cf::MAP;
		1567
		1568	$self->unlink_save;
		1569	$self->destroy;
		1570	}
		1571
		1572	my $nuke_counter = "aaaa";
		1573
		1574	sub nuke {
		1575	my ($self) = @_;
		1576
		1577	$self->{deny_save} = 1;
		1578	$self->reset_timeout (1);
		1579	$self->rename ("{nuke}/" . ($nuke_counter++));
		1580	$self->reset; # polite request, might not happen
		1581	}
		1582
		1583	sub customise_for {
		1584	my ($map, $ob) = @_;
		1585
		1586	if ($map->per_player) {
		1587	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1588	}
		1589
		1590	$map
		1591	}
		1592
		1593	sub emergency_save {
		1594	my $freeze_guard = cf::freeze_mainloop;
		1595
		1596	warn "enter emergency perl save\n";
		1597
		1598	cf::sync_job {
		1599	warn "begin emergency player save\n";
		1600	$_->save for values %cf::PLAYER;
		1601	warn "end emergency player save\n";
		1602
		1603	warn "begin emergency map save\n";
		1604	$_->save for values %cf::MAP;
		1605	warn "end emergency map save\n";
		1606	};
		1607
		1608	warn "leave emergency perl save\n";
		1609	}
		1610
		1611	package cf;
		1612
		1613	=back
		1614
		1615
		1616	=head3 cf::object::player
		1617
		1618	=over 4
775		1619
776	=item $player_object->reply ($npc, $msg[, $flags])	1620	=item $player_object->reply ($npc, $msg[, $flags])
777		1621
778	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1622	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	1623	can be C<undef>. Does the right thing when the player is currently in a
…		…
781		1625
782	=cut	1626	=cut
783		1627
784	# rough implementation of a future "reply" method that works	1628	# rough implementation of a future "reply" method that works
785	# with dialog boxes.	1629	# with dialog boxes.
		1630	#TODO: the first argument must go, split into a $npc->reply_to ( method
786	sub cf::object::player::reply($$$;$) {	1631	sub cf::object::player::reply($$$;$) {
787	my ($self, $npc, $msg, $flags) = @_;	1632	my ($self, $npc, $msg, $flags) = @_;
788		1633
789	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1634	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
790		1635
…		…
794	$msg = $npc->name . " says: $msg" if $npc;	1639	$msg = $npc->name . " says: $msg" if $npc;
795	$self->message ($msg, $flags);	1640	$self->message ($msg, $flags);
796	}	1641	}
797	}	1642	}
798		1643
799	=item $player->ext_reply ($msgid, $msgtype, %msg)
800
801	Sends an ext reply to the player.
802
803	=cut
804
805	sub cf::player::ext_reply($$$%) {
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")	1644	=item $player_object->may ("access")
814		1645
815	Returns wether the given player is authorized to access resource "access"	1646	Returns wether the given player is authorized to access resource "access"
816	(e.g. "command_wizcast").	1647	(e.g. "command_wizcast").
817		1648
…		…
824	(ref $cf::CFG{"may_$access"}	1655	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1656	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1657	: $cf::CFG{"may_$access"})
827	}	1658	}
828		1659
829	=cut	1660	=item $player_object->enter_link
830		1661
831	#############################################################################	1662	Freezes the player and moves him/her to a special map (C<{link}>).
		1663
		1664	The player should be reaosnably safe there for short amounts of time. You
		1665	I<MUST> call C<leave_link> as soon as possible, though.
		1666
		1667	=item $player_object->leave_link ($map, $x, $y)
		1668
		1669	Moves the player out of the specila link map onto the given map. If the
		1670	map is not valid (or omitted), the player will be moved back to the
		1671	location he/she was before the call to C<enter_link>, or, if that fails,
		1672	to the emergency map position.
		1673
		1674	Might block.
		1675
		1676	=cut
		1677
		1678	sub cf::object::player::enter_link {
		1679	my ($self) = @_;
		1680
		1681	$self->deactivate_recursive;
		1682
		1683	return if $self->map == $LINK_MAP;
		1684
		1685	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1686	if $self->map;
		1687
		1688	$self->enter_map ($LINK_MAP, 20, 20);
		1689	}
		1690
		1691	sub cf::object::player::leave_link {
		1692	my ($self, $map, $x, $y) = @_;
		1693
		1694	my $link_pos = delete $self->{_link_pos};
		1695
		1696	unless ($map) {
		1697	# restore original map position
		1698	($map, $x, $y) = @{ $link_pos || [] };
		1699	$map = cf::map::find $map;
		1700
		1701	unless ($map) {
		1702	($map, $x, $y) = @$EMERGENCY_POSITION;
		1703	$map = cf::map::find $map
		1704	or die "FATAL: cannot load emergency map\n";
		1705	}
		1706	}
		1707
		1708	($x, $y) = (-1, -1)
		1709	unless (defined $x) && (defined $y);
		1710
		1711	# use -1 or undef as default coordinates, not 0, 0
		1712	($x, $y) = ($map->enter_x, $map->enter_y)
		1713	if $x <=0 && $y <= 0;
		1714
		1715	$map->load;
		1716
		1717	return unless $self->contr->active;
		1718	$self->activate_recursive;
		1719	$self->enter_map ($map, $x, $y);
		1720	}
		1721
		1722	cf::player->attach (
		1723	on_logout => sub {
		1724	my ($pl) = @_;
		1725
		1726	# abort map switching before logout
		1727	if ($pl->ob->{_link_pos}) {
		1728	cf::sync_job {
		1729	$pl->ob->leave_link
		1730	};
		1731	}
		1732	},
		1733	on_login => sub {
		1734	my ($pl) = @_;
		1735
		1736	# try to abort aborted map switching on player login :)
		1737	# should happen only on crashes
		1738	if ($pl->ob->{_link_pos}) {
		1739	$pl->ob->enter_link;
		1740	(async {
		1741	# we need this sleep as the login has a concurrent enter_exit running
		1742	# and this sleep increases chances of the player not ending up in scorn
		1743	$pl->ob->reply (undef,
		1744	"There was an internal problem at your last logout, "
		1745	. "the server will try to bring you to your intended destination in a second.",
		1746	cf::NDI_RED);
		1747	Coro::Timer::sleep 1;
		1748	$pl->ob->leave_link;
		1749	})->prio (2);
		1750	}
		1751	},
		1752	);
		1753
		1754	=item $player_object->goto ($path, $x, $y)
		1755
		1756	=cut
		1757
		1758	sub cf::object::player::goto {
		1759	my ($self, $path, $x, $y) = @_;
		1760
		1761	$path = new cf::path $path;
		1762	$path ne "/" or Carp::cluck ("oy");#d#
		1763
		1764	$self->enter_link;
		1765
		1766	(async {
		1767	my $map = cf::map::find $path->as_string;
		1768	$map = $map->customise_for ($self) if $map;
		1769
		1770	# warn "entering ", $map->path, " at ($x, $y)\n"
		1771	# if $map;
		1772
		1773	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1774
		1775	$self->leave_link ($map, $x, $y);
		1776	})->prio (1);
		1777	}
		1778
		1779	=item $player_object->enter_exit ($exit_object)
		1780
		1781	=cut
		1782
		1783	sub parse_random_map_params {
		1784	my ($spec) = @_;
		1785
		1786	my $rmp = { # defaults
		1787	xsize => 10,
		1788	ysize => 10,
		1789	};
		1790
		1791	for (split /\n/, $spec) {
		1792	my ($k, $v) = split /\s+/, $_, 2;
		1793
		1794	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1795	}
		1796
		1797	$rmp
		1798	}
		1799
		1800	sub prepare_random_map {
		1801	my ($exit) = @_;
		1802
		1803	# all this does is basically replace the /! path by
		1804	# a new random map path (?random/...) with a seed
		1805	# that depends on the exit object
		1806
		1807	my $rmp = parse_random_map_params $exit->msg;
		1808
		1809	if ($exit->map) {
		1810	$rmp->{region} = $exit->map->region_name;
		1811	$rmp->{origin_map} = $exit->map->path;
		1812	$rmp->{origin_x} = $exit->x;
		1813	$rmp->{origin_y} = $exit->y;
		1814	}
		1815
		1816	$rmp->{random_seed} ||= $exit->random_seed;
		1817
		1818	my $data = cf::to_json $rmp;
		1819	my $md5 = Digest::MD5::md5_hex $data;
		1820
		1821	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1822	aio_write $fh, 0, (length $data), $data, 0;
		1823
		1824	$exit->slaying ("?random/$md5");
		1825	$exit->msg (undef);
		1826	}
		1827	}
		1828
		1829	sub cf::object::player::enter_exit {
		1830	my ($self, $exit) = @_;
		1831
		1832	return unless $self->type == cf::PLAYER;
		1833
		1834	$self->enter_link;
		1835
		1836	(async {
		1837	$self->deactivate_recursive; # just to be sure
		1838	unless (eval {
		1839	prepare_random_map $exit
		1840	if $exit->slaying eq "/!";
		1841
		1842	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1843	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1844
		1845	1;
		1846	}) {
		1847	$self->message ("Something went wrong deep within the crossfire server. "
		1848	. "I'll try to bring you back to the map you were before. "
		1849	. "Please report this to the dungeon master",
		1850	cf::NDI_UNIQUE | cf::NDI_RED);
		1851
		1852	warn "ERROR in enter_exit: $@";
		1853	$self->leave_link;
		1854	}
		1855	})->prio (1);
		1856	}
		1857
		1858	=head3 cf::client
		1859
		1860	=over 4
		1861
		1862	=item $client->send_drawinfo ($text, $flags)
		1863
		1864	Sends a drawinfo packet to the client. Circumvents output buffering so
		1865	should not be used under normal circumstances.
		1866
		1867	=cut
		1868
		1869	sub cf::client::send_drawinfo {
		1870	my ($self, $text, $flags) = @_;
		1871
		1872	utf8::encode $text;
		1873	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1874	}
		1875
		1876
		1877	=item $success = $client->query ($flags, "text", \&cb)
		1878
		1879	Queues a query to the client, calling the given callback with
		1880	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1881	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1882
		1883	Queries can fail, so check the return code. Or don't, as queries will become
		1884	reliable at some point in the future.
		1885
		1886	=cut
		1887
		1888	sub cf::client::query {
		1889	my ($self, $flags, $text, $cb) = @_;
		1890
		1891	return unless $self->state == ST_PLAYING
		1892	|| $self->state == ST_SETUP
		1893	|| $self->state == ST_CUSTOM;
		1894
		1895	$self->state (ST_CUSTOM);
		1896
		1897	utf8::encode $text;
		1898	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1899
		1900	$self->send_packet ($self->{query_queue}[0][0])
		1901	if @{ $self->{query_queue} } == 1;
		1902	}
		1903
		1904	cf::client->attach (
		1905	on_reply => sub {
		1906	my ($ns, $msg) = @_;
		1907
		1908	# this weird shuffling is so that direct followup queries
		1909	# get handled first
		1910	my $queue = delete $ns->{query_queue}
		1911	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1912
		1913	(shift @$queue)->[1]->($msg);
		1914
		1915	push @{ $ns->{query_queue} }, @$queue;
		1916
		1917	if (@{ $ns->{query_queue} } == @$queue) {
		1918	if (@$queue) {
		1919	$ns->send_packet ($ns->{query_queue}[0][0]);
		1920	} else {
		1921	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1922	}
		1923	}
		1924	},
		1925	);
		1926
		1927	=item $client->async (\&cb)
		1928
		1929	Create a new coroutine, running the specified callback. The coroutine will
		1930	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1931	or loss of connection).
		1932
		1933	=cut
		1934
		1935	sub cf::client::async {
		1936	my ($self, $cb) = @_;
		1937
		1938	my $coro = &Coro::async ($cb);
		1939
		1940	$coro->on_destroy (sub {
		1941	delete $self->{_coro}{$coro+0};
		1942	});
		1943
		1944	$self->{_coro}{$coro+0} = $coro;
		1945
		1946	$coro
		1947	}
		1948
		1949	cf::client->attach (
		1950	on_destroy => sub {
		1951	my ($ns) = @_;
		1952
		1953	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1954	},
		1955	);
		1956
		1957	=back
		1958
832		1959
833	=head2 SAFE SCRIPTING	1960	=head2 SAFE SCRIPTING
834		1961
835	Functions that provide a safe environment to compile and execute	1962	Functions that provide a safe environment to compile and execute
836	snippets of perl code without them endangering the safety of the server	1963	snippets of perl code without them endangering the safety of the server
…		…
988		2115
989	{	2116	{
990	my $path = cf::localdir . "/database.pst";	2117	my $path = cf::localdir . "/database.pst";
991		2118
992	sub db_load() {	2119	sub db_load() {
993	warn "loading database $path\n";#d# remove later
994	$DB = stat $path ? Storable::retrieve $path : { };	2120	$DB = stat $path ? Storable::retrieve $path : { };
995	}	2121	}
996		2122
997	my $pid;	2123	my $pid;
998		2124
999	sub db_save() {	2125	sub db_save() {
1000	warn "saving database $path\n";#d# remove later
1001	waitpid $pid, 0 if $pid;	2126	waitpid $pid, 0 if $pid;
1002	if (0 == ($pid = fork)) {	2127	if (0 == ($pid = fork)) {
1003	$DB->{_meta}{version} = 1;	2128	$DB->{_meta}{version} = 1;
1004	Storable::nstore $DB, "$path~";	2129	Storable::nstore $DB, "$path~";
1005	rename "$path~", $path;	2130	rename "$path~", $path;
…		…
1053	open my $fh, "<:utf8", cf::confdir . "/config"	2178	open my $fh, "<:utf8", cf::confdir . "/config"
1054	or return;	2179	or return;
1055		2180
1056	local $/;	2181	local $/;
1057	*CFG = YAML::Syck::Load <$fh>;	2182	*CFG = YAML::Syck::Load <$fh>;
		2183
		2184	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2185
		2186	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2187	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2188
		2189	if (exists $CFG{mlockall}) {
		2190	eval {
		2191	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2192	and die "WARNING: m(un)lockall failed: $!\n";
		2193	};
		2194	warn $@ if $@;
		2195	}
1058	}	2196	}
1059		2197
1060	sub main {	2198	sub main {
		2199	# we must not ever block the main coroutine
		2200	local $Coro::idle = sub {
		2201	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2202	async { Event::one_event };
		2203	};
		2204
1061	cfg_load;	2205	cfg_load;
1062	db_load;	2206	db_load;
1063	load_extensions;	2207	load_extensions;
1064	Event::loop;	2208	Event::loop;
1065	}	2209	}
1066		2210
1067	#############################################################################	2211	#############################################################################
1068	# initialisation	2212	# initialisation
1069		2213
1070	sub _perl_reload(&) {	2214	sub reload() {
1071	my ($msg) = @_;	2215	# can/must only be called in main
		2216	if ($Coro::current != $Coro::main) {
		2217	warn "can only reload from main coroutine\n";
		2218	return;
		2219	}
1072		2220
1073	$msg->("reloading...");	2221	warn "reloading...";
		2222
		2223	my $guard = freeze_mainloop;
		2224	cf::emergency_save;
1074		2225
1075	eval {	2226	eval {
		2227	# if anything goes wrong in here, we should simply crash as we already saved
		2228
1076	# cancel all watchers	2229	# cancel all watchers
1077	for (Event::all_watchers) {	2230	for (Event::all_watchers) {
1078	$_->cancel if $_->data & WF_AUTOCANCEL;	2231	$_->cancel if $_->data & WF_AUTOCANCEL;
1079	}	2232	}
1080		2233
		2234	# cancel all extension coros
		2235	$_->cancel for values %EXT_CORO;
		2236	%EXT_CORO = ();
		2237
1081	# unload all extensions	2238	# unload all extensions
1082	for (@exts) {	2239	for (@exts) {
1083	$msg->("unloading <$_>");	2240	warn "unloading <$_>";
1084	unload_extension $_;	2241	unload_extension $_;
1085	}	2242	}
1086		2243
1087	# unload all modules loaded from $LIBDIR	2244	# unload all modules loaded from $LIBDIR
1088	while (my ($k, $v) = each %INC) {	2245	while (my ($k, $v) = each %INC) {
1089	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2246	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1090		2247
1091	$msg->("removing <$k>");	2248	warn "removing <$k>";
1092	delete $INC{$k};	2249	delete $INC{$k};
1093		2250
1094	$k =~ s/\.pm$//;	2251	$k =~ s/\.pm$//;
1095	$k =~ s/\//::/g;	2252	$k =~ s/\//::/g;
1096		2253
…		…
1101	Symbol::delete_package $k;	2258	Symbol::delete_package $k;
1102	}	2259	}
1103		2260
1104	# sync database to disk	2261	# sync database to disk
1105	cf::db_sync;	2262	cf::db_sync;
		2263	IO::AIO::flush;
1106		2264
1107	# get rid of safe::, as good as possible	2265	# get rid of safe::, as good as possible
1108	Symbol::delete_package "safe::$_"	2266	Symbol::delete_package "safe::$_"
1109	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2267	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1110		2268
1111	# remove register_script_function callbacks	2269	# remove register_script_function callbacks
1112	# TODO	2270	# TODO
1113		2271
1114	# unload cf.pm "a bit"	2272	# unload cf.pm "a bit"
…		…
1117	# don't, removes xs symbols, too,	2275	# don't, removes xs symbols, too,
1118	# and global variables created in xs	2276	# and global variables created in xs
1119	#Symbol::delete_package __PACKAGE__;	2277	#Symbol::delete_package __PACKAGE__;
1120		2278
1121	# reload cf.pm	2279	# reload cf.pm
1122	$msg->("reloading cf.pm");	2280	warn "reloading cf.pm";
1123	require cf;	2281	require cf;
		2282	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1124		2283
1125	# load config and database again	2284	# load config and database again
1126	cf::cfg_load;	2285	cf::cfg_load;
1127	cf::db_load;	2286	cf::db_load;
1128		2287
1129	# load extensions	2288	# load extensions
1130	$msg->("load extensions");	2289	warn "load extensions";
1131	cf::load_extensions;	2290	cf::load_extensions;
1132		2291
1133	# reattach attachments to objects	2292	# reattach attachments to objects
1134	$msg->("reattach");	2293	warn "reattach";
1135	_global_reattach;	2294	_global_reattach;
		2295	reattach $_ for values %MAP;
1136	};	2296	};
1137	$msg->($@) if $@;
1138		2297
1139	$msg->("reloaded");	2298	if ($@) {
		2299	warn $@;
		2300	warn "error while reloading, exiting.";
		2301	exit 1;
		2302	}
		2303
		2304	warn "reloaded successfully";
1140	};	2305	};
1141		2306
1142	sub perl_reload() {	2307	#############################################################################
1143	_perl_reload {	2308
1144	warn $_[0];	2309	unless ($LINK_MAP) {
1145	print "$_[0]\n";	2310	$LINK_MAP = cf::map::new;
1146	};	2311
		2312	$LINK_MAP->width (41);
		2313	$LINK_MAP->height (41);
		2314	$LINK_MAP->alloc;
		2315	$LINK_MAP->path ("{link}");
		2316	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2317	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2318
		2319	# dirty hack because... archetypes are not yet loaded
		2320	Event->timer (
		2321	after => 10,
		2322	cb => sub {
		2323	$_[0]->w->cancel;
		2324
		2325	# provide some exits "home"
		2326	my $exit = cf::object::new "exit";
		2327
		2328	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2329	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2330	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2331
		2332	$LINK_MAP->insert ($exit->clone, 19, 19);
		2333	$LINK_MAP->insert ($exit->clone, 19, 20);
		2334	$LINK_MAP->insert ($exit->clone, 19, 21);
		2335	$LINK_MAP->insert ($exit->clone, 20, 19);
		2336	$LINK_MAP->insert ($exit->clone, 20, 21);
		2337	$LINK_MAP->insert ($exit->clone, 21, 19);
		2338	$LINK_MAP->insert ($exit->clone, 21, 20);
		2339	$LINK_MAP->insert ($exit->clone, 21, 21);
		2340
		2341	$exit->destroy;
		2342	});
		2343
		2344	$LINK_MAP->{deny_save} = 1;
		2345	$LINK_MAP->{deny_reset} = 1;
		2346
		2347	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
1147	}	2348	}
1148		2349
1149	register "<global>", __PACKAGE__;	2350	register "<global>", __PACKAGE__;
1150		2351
1151	register_command "perl-reload" => sub {	2352	register_command "reload" => sub {
1152	my ($who, $arg) = @_;	2353	my ($who, $arg) = @_;
1153		2354
1154	if ($who->flag (FLAG_WIZ)) {	2355	if ($who->flag (FLAG_WIZ)) {
1155	_perl_reload {	2356	$who->message ("start of reload.");
1156	warn $_[0];	2357	reload;
1157	$who->message ($_[0]);	2358	$who->message ("end of reload.");
1158	};
1159	}	2359	}
1160	};	2360	};
1161		2361
1162	unshift @INC, $LIBDIR;	2362	unshift @INC, $LIBDIR;
1163		2363
1164	$TICK_WATCHER = Event->timer (	2364	$TICK_WATCHER = Event->timer (
		2365	reentrant => 0,
1165	prio => 0,	2366	prio => 0,
1166	at => $NEXT_TICK || 1,	2367	at => $NEXT_TICK || $TICK,
1167	data => WF_AUTOCANCEL,	2368	data => WF_AUTOCANCEL,
1168	cb => sub {	2369	cb => sub {
1169	cf::server_tick; # one server iteration	2370	cf::server_tick; # one server iteration
1170		2371	$RUNTIME += $TICK;
1171	my $NOW = Event::time;
1172	$NEXT_TICK += $TICK;	2372	$NEXT_TICK += $TICK;
1173		2373
1174	# if we are delayed by four ticks or more, skip them all	2374	# if we are delayed by four ticks or more, skip them all
1175	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2375	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1176		2376
1177	$TICK_WATCHER->at ($NEXT_TICK);	2377	$TICK_WATCHER->at ($NEXT_TICK);
1178	$TICK_WATCHER->start;	2378	$TICK_WATCHER->start;
1179	},	2379	},
1180	);	2380	);
1181		2381
1182	IO::AIO::max_poll_time $TICK * 0.2;	2382	IO::AIO::max_poll_time $TICK * 0.2;
1183		2383
		2384	Event->io (
1184	Event->io (fd => IO::AIO::poll_fileno,	2385	fd => IO::AIO::poll_fileno,
1185	poll => 'r',	2386	poll => 'r',
1186	prio => 5,	2387	prio => 5,
1187	data => WF_AUTOCANCEL,	2388	data => WF_AUTOCANCEL,
1188	cb => \&IO::AIO::poll_cb);	2389	cb => \&IO::AIO::poll_cb,
		2390	);
		2391
		2392	Event->timer (
		2393	data => WF_AUTOCANCEL,
		2394	after => 0,
		2395	interval => 10,
		2396	cb => sub {
		2397	(Coro::unblock_sub {
		2398	write_runtime
		2399	or warn "ERROR: unable to write runtime file: $!";
		2400	})->();
		2401	},
		2402	);
		2403
		2404	END { cf::emergency_save }
1189		2405
1190	1	2406	1
1191		2407

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