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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.21 by root, Sun Jul 16 17:51:40 2006 UTC vs.
Revision 1.155 by root, Tue Jan 9 21:32:42 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
		9	use Opcode;
		10	use Safe;
		11	use Safe::Hole;
6		12
		13	use Coro 3.3 ();
7	use Event;	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;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
		25	use Time::HiRes;
		26
8	$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
9		28
10	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
11		30
12	our %COMMAND;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
		36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38	our %EXTCMD = ();
		39
13	our @EVENT;	40	our @EVENT;
14	our %PROP_TYPE;	41	our $LIBDIR = datadir . "/ext";
15	our %PROP_IDX;	42
		43	our $TICK = MAX_TIME * 1e-6;
		44	our $TICK_WATCHER;
		45	our $NEXT_TICK;
		46	our $NOW;
		47
		48	our %CFG;
		49
		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	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		60	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		61
		62	binmode STDOUT;
		63	binmode STDERR;
		64
		65	# read virtual server time, if available
		66	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		67	open my $fh, "<", cf::localdir . "/runtime"
		68	or die "unable to read runtime file: $!";
		69	$RUNTIME = <$fh> + 0.;
		70	}
		71
		72	mkdir cf::localdir;
		73	mkdir cf::localdir . "/" . cf::playerdir;
		74	mkdir cf::localdir . "/" . cf::tmpdir;
		75	mkdir cf::localdir . "/" . cf::uniquedir;
		76	mkdir $RANDOM_MAPS;
		77
		78	# a special map that is always available
		79	our $LINK_MAP;
		80	our $EMERGENCY_POSITION;
		81
		82	#############################################################################
		83
		84	=head2 GLOBAL VARIABLES
		85
		86	=over 4
		87
		88	=item $cf::UPTIME
		89
		90	The timestamp of the server start (so not actually an uptime).
		91
		92	=item $cf::RUNTIME
		93
		94	The time this server has run, starts at 0 and is increased by $cf::TICK on
		95	every server tick.
		96
		97	=item $cf::LIBDIR
		98
		99	The perl library directory, where extensions and cf-specific modules can
		100	be found. It will be added to C<@INC> automatically.
		101
		102	=item $cf::NOW
		103
		104	The time of the last (current) server tick.
		105
		106	=item $cf::TICK
		107
		108	The interval between server ticks, in seconds.
		109
		110	=item %cf::CFG
		111
		112	Configuration for the server, loaded from C</etc/crossfire/config>, or
		113	from wherever your confdir points to.
		114
		115	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		116
		117	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		118	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		119	processing has been done. Call C<< ->wait >> on them to maximise the
		120	window of cpu time available, or simply to synchronise to the server tick.
		121
		122	=back
		123
		124	=cut
16		125
17	BEGIN {	126	BEGIN {
18	@EVENT = map lc, @EVENT;
19
20	*CORE::GLOBAL::warn = sub {	127	*CORE::GLOBAL::warn = sub {
21	my $msg = join "", @_;	128	my $msg = join "", @_;
		129	utf8::encode $msg;
		130
22	$msg .= "\n"	131	$msg .= "\n"
23	unless $msg =~ /\n$/;	132	unless $msg =~ /\n$/;
24		133
25	print STDERR "cfperl: $msg";
26	LOG llevError, "cfperl: $msg";	134	LOG llevError, $msg;
27	};	135	};
28	}	136	}
29		137
30	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	138	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		139	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		140	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		141	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		142	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		143	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
31		144
32	# generate property mutators	145	# we bless all objects into (empty) derived classes to force a method lookup
33	sub prop_gen {	146	# within the Safe compartment.
34	my ($prefix, $class) = @_;	147	for my $pkg (qw(
35		148	cf::global cf::attachable
		149	cf::object cf::object::player
		150	cf::client cf::player
		151	cf::arch cf::living
		152	cf::map cf::party cf::region
		153	)) {
36	no strict 'refs';	154	no strict 'refs';
37		155	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
38	for my $prop (keys %PROP_TYPE) {
39	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
40	my $sub = lc $1;
41
42	my $type = $PROP_TYPE{$prop};
43	my $idx = $PROP_IDX {$prop};
44
45	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
46	$_[0]->get_property ($type, $idx)
47	};
48
49	*{"$class\::set_$sub"} = sub {
50	$_[0]->set_property ($type, $idx, $_[1]);
51	} unless $ignore_set{$prop};
52	}
53	}	156	}
54
55	# auto-generate most of the API
56
57	prop_gen OBJECT_PROP => "cf::object";
58	# CFAPI_OBJECT_ANIMATION?
59	prop_gen PLAYER_PROP => "cf::object::player";
60
61	prop_gen MAP_PROP => "cf::map";
62	prop_gen ARCH_PROP => "cf::arch";
63
64	# guessed hierarchies
65
66	@cf::object::player::ISA = 'cf::object';
67	@cf::object::map::ISA = 'cf::object';
68		157
69	$Event::DIED = sub {	158	$Event::DIED = sub {
70	warn "error in event callback: @_";	159	warn "error in event callback: @_";
71	};	160	};
72		161
73	my %ext_pkg;	162	my %ext_pkg;
74	my @exts;	163	my @exts;
75	my @hook;	164	my @hook;
76	my %command;
77	my %extcmd;
78		165
79	sub inject_event {	166	=head2 UTILITY FUNCTIONS
80	my $extension = shift;	167
		168	=over 4
		169
		170	=item dumpval $ref
		171
		172	=cut
		173
		174	sub dumpval {
		175	eval {
		176	local $SIG{__DIE__};
		177	my $d;
		178	if (1) {
		179	$d = new Data::Dumper([$_[0]], ["*var"]);
		180	$d->Terse(1);
		181	$d->Indent(2);
		182	$d->Quotekeys(0);
		183	$d->Useqq(1);
		184	#$d->Bless(...);
		185	$d->Seen($_[1]) if @_ > 1;
		186	$d = $d->Dump();
		187	}
		188	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		189	$d
		190	} || "[unable to dump $_[0]: '$@']";
		191	}
		192
		193	use JSON::Syck (); # TODO# replace by JSON::PC once working
		194
		195	=item $ref = cf::from_json $json
		196
		197	Converts a JSON string into the corresponding perl data structure.
		198
		199	=cut
		200
		201	sub from_json($) {
		202	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		203	JSON::Syck::Load $_[0]
		204	}
		205
		206	=item $json = cf::to_json $ref
		207
		208	Converts a perl data structure into its JSON representation.
		209
		210	=cut
		211
		212	sub to_json($) {
		213	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		214	JSON::Syck::Dump $_[0]
		215	}
		216
		217	=item cf::lock_wait $string
		218
		219	Wait until the given lock is available. See cf::lock_acquire.
		220
		221	=item my $lock = cf::lock_acquire $string
		222
		223	Wait until the given lock is available and then acquires it and returns
		224	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		225	for example when the coroutine gets canceled), the lock is automatically
		226	returned.
		227
		228	Lock names should begin with a unique identifier (for example, cf::map::find
		229	uses map_find and cf::map::load uses map_load).
		230
		231	=cut
		232
		233	our %LOCK;
		234
		235	sub lock_wait($) {
		236	my ($key) = @_;
		237
		238	# wait for lock, if any
		239	while ($LOCK{$key}) {
		240	push @{ $LOCK{$key} }, $Coro::current;
		241	Coro::schedule;
		242	}
		243	}
		244
		245	sub lock_acquire($) {
		246	my ($key) = @_;
		247
		248	# wait, to be sure we are not locked
		249	lock_wait $key;
		250
		251	$LOCK{$key} = [];
		252
		253	Coro::guard {
		254	# wake up all waiters, to be on the safe side
		255	$_->ready for @{ delete $LOCK{$key} };
		256	}
		257	}
		258
		259	sub freeze_mainloop {
		260	return unless $TICK_WATCHER->is_active;
		261
		262	my $guard = Coro::guard { $TICK_WATCHER->start };
		263	$TICK_WATCHER->stop;
		264	$guard
		265	}
		266
		267	=item cf::async { BLOCK }
		268
		269	Currently the same as Coro::async_pool, meaning you cannot use
		270	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		271	thing you are allowed to do is call C<prio> on it.
		272
		273	=cut
		274
		275	BEGIN { *async = \&Coro::async_pool }
		276
		277	=item cf::sync_job { BLOCK }
		278
		279	The design of crossfire+ requires that the main coro ($Coro::main) is
		280	always able to handle events or runnable, as crossfire+ is only partly
		281	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		282
		283	If it must be done, put the blocking parts into C<sync_job>. This will run
		284	the given BLOCK in another coroutine while waiting for the result. The
		285	server will be frozen during this time, so the block should either finish
		286	fast or be very important.
		287
		288	=cut
		289
		290	sub sync_job(&) {
		291	my ($job) = @_;
		292
		293	if ($Coro::current == $Coro::main) {
		294	# this is the main coro, too bad, we have to block
		295	# till the operation succeeds, freezing the server :/
		296
		297	# TODO: use suspend/resume instead
		298	# (but this is cancel-safe)
		299	my $freeze_guard = freeze_mainloop;
		300
		301	my $busy = 1;
		302	my @res;
		303
		304	(async {
		305	@res = eval { $job->() };
		306	warn $@ if $@;
		307	undef $busy;
		308	})->prio (Coro::PRIO_MAX);
		309
		310	while ($busy) {
		311	Coro::cede or Event::one_event;
		312	}
		313
		314	wantarray ? @res : $res[0]
		315	} else {
		316	# we are in another coroutine, how wonderful, everything just works
		317
		318	$job->()
		319	}
		320	}
		321
		322	=item $coro = cf::async_ext { BLOCK }
		323
		324	Like async, but this coro is automcatially being canceled when the
		325	extension calling this is being unloaded.
		326
		327	=cut
		328
		329	sub async_ext(&) {
81	my $event_code = shift;	330	my $cb = shift;
82		331
83	my $cb = $hook[$event_code]{$extension}	332	my $coro = &Coro::async ($cb);
		333
		334	$coro->on_destroy (sub {
		335	delete $EXT_CORO{$coro+0};
		336	});
		337	$EXT_CORO{$coro+0} = $coro;
		338
		339	$coro
		340	}
		341
		342	sub write_runtime {
		343	my $runtime = cf::localdir . "/runtime";
		344
		345	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
84	or return;	346	or return;
85		347
86	&$cb	348	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
87	}	349	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		350	and return;
88		351
89	sub inject_global_event {	352	aio_fsync $fh
		353	and return;
		354
		355	close $fh
		356	or return;
		357
		358	aio_rename "$runtime~", $runtime
		359	and return;
		360
		361	1
		362	}
		363
		364	=back
		365
		366	=cut
		367
		368	#############################################################################
		369
		370	package cf::path;
		371
		372	# used to convert map paths into valid unix filenames by repalcing / by ∕
		373	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		374
		375	sub new {
		376	my ($class, $path, $base) = @_;
		377
		378	$path = $path->as_string if ref $path;
		379
		380	my $self = bless { }, $class;
		381
		382	# {... are special paths that are not touched
		383	# ?xxx/... are special absolute paths
		384	# ?random/... random maps
		385	# /! non-realised random map exit
		386	# /... normal maps
		387	# ~/... per-player maps without a specific player (DO NOT USE)
		388	# ~user/... per-player map of a specific user
		389
		390	if ($path =~ /^{/) {
		391	# fine as it is
		392	} elsif ($path =~ s{^\?random/}{}) {
		393	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		394	$self->{random} = cf::from_json $data;
		395	} else {
		396	if ($path =~ s{^~([^/]+)?}{}) {
		397	$self->{user_rel} = 1;
		398
		399	if (defined $1) {
		400	$self->{user} = $1;
		401	} elsif ($base =~ m{^~([^/]+)/}) {
		402	$self->{user} = $1;
		403	} else {
		404	warn "cannot resolve user-relative path without user <$path,$base>\n";
		405	}
		406	} elsif ($path =~ /^\//) {
		407	# already absolute
		408	} else {
		409	$base =~ s{[^/]+/?$}{};
		410	return $class->new ("$base/$path");
		411	}
		412
		413	for ($path) {
		414	redo if s{/\.?/}{/};
		415	redo if s{/[^/]+/\.\./}{/};
		416	}
		417	}
		418
		419	$self->{path} = $path;
		420
		421	$self
		422	}
		423
		424	# the name / primary key / in-game path
		425	sub as_string {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? "~$self->{user}$self->{path}"
		429	: $self->{random} ? "?random/$self->{path}"
		430	: $self->{path}
		431	}
		432
		433	# the displayed name, this is a one way mapping
		434	sub visible_name {
		435	my ($self) = @_;
		436
		437	# if (my $rmp = $self->{random}) {
		438	# # todo: be more intelligent about this
		439	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		440	# } else {
		441	$self->as_string
		442	# }
		443	}
		444
		445	# escape the /'s in the path
		446	sub _escaped_path {
		447	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		448	$path
		449	}
		450
		451	# the original (read-only) location
		452	sub load_path {
		453	my ($self) = @_;
		454
		455	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		456	}
		457
		458	# the temporary/swap location
		459	sub save_path {
		460	my ($self) = @_;
		461
		462	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		463	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		464	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		465	}
		466
		467	# the unique path, might be eq to save_path
		468	sub uniq_path {
		469	my ($self) = @_;
		470
		471	$self->{user_rel} || $self->{random}
		472	? undef
		473	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		474	}
		475
		476	# return random map parameters, or undef
		477	sub random_map_params {
		478	my ($self) = @_;
		479
		480	$self->{random}
		481	}
		482
		483	# this is somewhat ugly, but style maps do need special treatment
		484	sub is_style_map {
		485	$_[0]{path} =~ m{^/styles/}
		486	}
		487
		488	package cf;
		489
		490	#############################################################################
		491
		492	=head2 ATTACHABLE OBJECTS
		493
		494	Many objects in crossfire are so-called attachable objects. That means you can
		495	attach callbacks/event handlers (a collection of which is called an "attachment")
		496	to it. All such attachable objects support the following methods.
		497
		498	In the following description, CLASS can be any of C<global>, C<object>
		499	C<player>, C<client> or C<map> (i.e. the attachable objects in
		500	crossfire+).
		501
		502	=over 4
		503
		504	=item $attachable->attach ($attachment, key => $value...)
		505
		506	=item $attachable->detach ($attachment)
		507
		508	Attach/detach a pre-registered attachment to a specific object and give it
		509	the specified key/value pairs as arguments.
		510
		511	Example, attach a minesweeper attachment to the given object, making it a
		512	10x10 minesweeper game:
		513
		514	$obj->attach (minesweeper => width => 10, height => 10);
		515
		516	=item $bool = $attachable->attached ($name)
		517
		518	Checks wether the named attachment is currently attached to the object.
		519
		520	=item cf::CLASS->attach ...
		521
		522	=item cf::CLASS->detach ...
		523
		524	Define an anonymous attachment and attach it to all objects of the given
		525	CLASS. See the next function for an explanation of its arguments.
		526
		527	You can attach to global events by using the C<cf::global> class.
		528
		529	Example, log all player logins:
		530
		531	cf::player->attach (
		532	on_login => sub {
		533	my ($pl) = @_;
		534	...
		535	},
		536	);
		537
		538	Example, attach to the jeweler skill:
		539
		540	cf::object->attach (
		541	type => cf::SKILL,
		542	subtype => cf::SK_JEWELER,
		543	on_use_skill => sub {
		544	my ($sk, $ob, $part, $dir, $msg) = @_;
		545	...
		546	},
		547	);
		548
		549	=item cf::CLASS::attachment $name, ...
		550
		551	Register an attachment by C<$name> through which attachable objects of the
		552	given CLASS can refer to this attachment.
		553
		554	Some classes such as crossfire maps and objects can specify attachments
		555	that are attached at load/instantiate time, thus the need for a name.
		556
		557	These calls expect any number of the following handler/hook descriptions:
		558
		559	=over 4
		560
		561	=item prio => $number
		562
		563	Set the priority for all following handlers/hooks (unless overwritten
		564	by another C<prio> setting). Lower priority handlers get executed
		565	earlier. The default priority is C<0>, and many built-in handlers are
		566	registered at priority C<-1000>, so lower priorities should not be used
		567	unless you know what you are doing.
		568
		569	=item type => $type
		570
		571	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		572	given type of objects only (the additional parameter C<subtype> can be
		573	used to further limit to the given subtype).
		574
		575	=item on_I<event> => \&cb
		576
		577	Call the given code reference whenever the named event happens (event is
		578	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		579	handlers are recognised generally depends on the type of object these
		580	handlers attach to).
		581
		582	See F<include/eventinc.h> for the full list of events supported, and their
		583	class.
		584
		585	=item package => package::
		586
		587	Look for sub functions of the name C<< on_I<event> >> in the given
		588	package and register them. Only handlers for eevents supported by the
		589	object/class are recognised.
		590
		591	=back
		592
		593	Example, define an attachment called "sockpuppet" that calls the given
		594	event handler when a monster attacks:
		595
		596	cf::object::attachment sockpuppet =>
		597	on_skill_attack => sub {
		598	my ($self, $victim) = @_;
		599	...
		600	}
		601	}
		602
		603	=item $attachable->valid
		604
		605	Just because you have a perl object does not mean that the corresponding
		606	C-level object still exists. If you try to access an object that has no
		607	valid C counterpart anymore you get an exception at runtime. This method
		608	can be used to test for existence of the C object part without causing an
		609	exception.
		610
		611	=cut
		612
		613	# the following variables are defined in .xs and must not be re-created
		614	our @CB_GLOBAL = (); # registry for all global events
		615	our @CB_ATTACHABLE = (); # registry for all attachables
		616	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		617	our @CB_PLAYER = ();
		618	our @CB_CLIENT = ();
		619	our @CB_TYPE = (); # registry for type (cf-object class) based events
		620	our @CB_MAP = ();
		621
		622	my %attachment;
		623
		624	sub _attach_cb($$$$) {
		625	my ($registry, $event, $prio, $cb) = @_;
		626
		627	use sort 'stable';
		628
		629	$cb = [$prio, $cb];
		630
		631	@{$registry->[$event]} = sort
		632	{ $a->[0] cmp $b->[0] }
		633	@{$registry->[$event] || []}, $cb;
		634	}
		635
		636	# hack
		637	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		638
		639	# attach handles attaching event callbacks
		640	# the only thing the caller has to do is pass the correct
		641	# registry (== where the callback attaches to).
		642	sub _attach {
		643	my ($registry, $klass, @arg) = @_;
		644
		645	my $object_type;
		646	my $prio = 0;
		647	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		648
		649	#TODO: get rid of this hack
		650	if ($attachable_klass{$klass}) {
		651	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		652	}
		653
		654	while (@arg) {
		655	my $type = shift @arg;
		656
		657	if ($type eq "prio") {
		658	$prio = shift @arg;
		659
		660	} elsif ($type eq "type") {
		661	$object_type = shift @arg;
		662	$registry = $CB_TYPE[$object_type] ||= [];
		663
		664	} elsif ($type eq "subtype") {
		665	defined $object_type or Carp::croak "subtype specified without type";
		666	my $object_subtype = shift @arg;
		667	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		668
		669	} elsif ($type eq "package") {
		670	my $pkg = shift @arg;
		671
		672	while (my ($name, $id) = each %cb_id) {
		673	if (my $cb = $pkg->can ($name)) {
		674	_attach_cb $registry, $id, $prio, $cb;
		675	}
		676	}
		677
		678	} elsif (exists $cb_id{$type}) {
		679	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		680
		681	} elsif (ref $type) {
		682	warn "attaching objects not supported, ignoring.\n";
		683
		684	} else {
		685	shift @arg;
		686	warn "attach argument '$type' not supported, ignoring.\n";
		687	}
		688	}
		689	}
		690
		691	sub _object_attach {
		692	my ($obj, $name, %arg) = @_;
		693
		694	return if exists $obj->{_attachment}{$name};
		695
		696	if (my $attach = $attachment{$name}) {
		697	my $registry = $obj->registry;
		698
		699	for (@$attach) {
		700	my ($klass, @attach) = @$_;
		701	_attach $registry, $klass, @attach;
		702	}
		703
		704	$obj->{$name} = \%arg;
		705	} else {
		706	warn "object uses attachment '$name' that is not available, postponing.\n";
		707	}
		708
		709	$obj->{_attachment}{$name} = undef;
		710	}
		711
		712	sub cf::attachable::attach {
		713	if (ref $_[0]) {
		714	_object_attach @_;
		715	} else {
		716	_attach shift->_attach_registry, @_;
		717	}
		718	};
		719
		720	# all those should be optimised
		721	sub cf::attachable::detach {
		722	my ($obj, $name) = @_;
		723
		724	if (ref $obj) {
		725	delete $obj->{_attachment}{$name};
		726	reattach ($obj);
		727	} else {
		728	Carp::croak "cannot, currently, detach class attachments";
		729	}
		730	};
		731
		732	sub cf::attachable::attached {
		733	my ($obj, $name) = @_;
		734
		735	exists $obj->{_attachment}{$name}
		736	}
		737
		738	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		739	eval "#line " . __LINE__ . " 'cf.pm'
		740	sub cf::\L$klass\E::_attach_registry {
		741	(\\\@CB_$klass, KLASS_$klass)
		742	}
		743
		744	sub cf::\L$klass\E::attachment {
		745	my \$name = shift;
		746
		747	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		748	}
		749	";
		750	die if $@;
		751	}
		752
		753	our $override;
		754	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		755
		756	sub override {
		757	$override = 1;
		758	@invoke_results = ();
		759	}
		760
		761	sub do_invoke {
90	my $event = shift;	762	my $event = shift;
		763	my $callbacks = shift;
91		764
92	my $cb = $hook[$event]	765	@invoke_results = ();
		766
		767	local $override;
		768
		769	for (@$callbacks) {
		770	eval { &{$_->[1]} };
		771
		772	if ($@) {
		773	warn "$@";
		774	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		775	override;
		776	}
		777
		778	return 1 if $override;
		779	}
		780
		781	0
		782	}
		783
		784	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		785
		786	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		787
		788	Generate an object-specific event with the given arguments.
		789
		790	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		791	removed in future versions), and there is no public API to access override
		792	results (if you must, access C<@cf::invoke_results> directly).
		793
		794	=back
		795
		796	=cut
		797
		798	#############################################################################
		799	# object support
		800
		801	sub reattach {
		802	# basically do the same as instantiate, without calling instantiate
		803	my ($obj) = @_;
		804
		805	my $registry = $obj->registry;
		806
		807	@$registry = ();
		808
		809	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		810
		811	for my $name (keys %{ $obj->{_attachment} || {} }) {
		812	if (my $attach = $attachment{$name}) {
		813	for (@$attach) {
		814	my ($klass, @attach) = @$_;
		815	_attach $registry, $klass, @attach;
		816	}
		817	} else {
		818	warn "object uses attachment '$name' that is not available, postponing.\n";
		819	}
		820	}
		821	}
		822
		823	cf::attachable->attach (
		824	prio => -1000000,
		825	on_instantiate => sub {
		826	my ($obj, $data) = @_;
		827
		828	$data = from_json $data;
		829
		830	for (@$data) {
		831	my ($name, $args) = @$_;
		832
		833	$obj->attach ($name, %{$args || {} });
		834	}
		835	},
		836	on_reattach => \&reattach,
		837	on_clone => sub {
		838	my ($src, $dst) = @_;
		839
		840	@{$dst->registry} = @{$src->registry};
		841
		842	%$dst = %$src;
		843
		844	%{$dst->{_attachment}} = %{$src->{_attachment}}
		845	if exists $src->{_attachment};
		846	},
		847	);
		848
		849	sub object_freezer_save {
		850	my ($filename, $rdata, $objs) = @_;
		851
		852	sync_job {
		853	if (length $$rdata) {
		854	warn sprintf "saving %s (%d,%d)\n",
		855	$filename, length $$rdata, scalar @$objs;
		856
		857	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		858	chmod SAVE_MODE, $fh;
		859	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		860	aio_fsync $fh;
		861	close $fh;
		862
		863	if (@$objs) {
		864	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		865	chmod SAVE_MODE, $fh;
		866	my $data = Storable::nfreeze { version => 1, objs => $objs };
		867	aio_write $fh, 0, (length $data), $data, 0;
		868	aio_fsync $fh;
		869	close $fh;
		870	aio_rename "$filename.pst~", "$filename.pst";
		871	}
		872	} else {
		873	aio_unlink "$filename.pst";
		874	}
		875
		876	aio_rename "$filename~", $filename;
		877	} else {
		878	warn "FATAL: $filename~: $!\n";
		879	}
		880	} else {
		881	aio_unlink $filename;
		882	aio_unlink "$filename.pst";
		883	}
		884	}
		885	}
		886
		887	sub object_freezer_as_string {
		888	my ($rdata, $objs) = @_;
		889
		890	use Data::Dumper;
		891
		892	$$rdata . Dumper $objs
		893	}
		894
		895	sub object_thawer_load {
		896	my ($filename) = @_;
		897
		898	my ($data, $av);
		899
		900	(aio_load $filename, $data) >= 0
93	or return;	901	or return;
94		902
95	List::Util::max map &$_, values %$cb	903	unless (aio_stat "$filename.pst") {
96	}	904	(aio_load "$filename.pst", $av) >= 0
97		905	or return;
98	sub inject_command {	906	$av = eval { (Storable::thaw $av)->{objs} };
99	my ($name, $obj, $params) = @_;
100
101	for my $cmd (@{ $command{$name} }) {
102	$cmd->[1]->($obj, $params);
103	}	907	}
104		908
105	-1	909	warn sprintf "loading %s (%d)\n",
		910	$filename, length $data, scalar @{$av || []};#d#
		911	return ($data, $av);
106	}	912	}
		913
		914	#############################################################################
		915	# command handling &c
		916
		917	=item cf::register_command $name => \&callback($ob,$args);
		918
		919	Register a callback for execution when the client sends the user command
		920	$name.
		921
		922	=cut
107		923
108	sub register_command {	924	sub register_command {
109	my ($name, $time, $cb) = @_;	925	my ($name, $cb) = @_;
110		926
111	my $caller = caller;	927	my $caller = caller;
112	#warn "registering command '$name/$time' to '$caller'";	928	#warn "registering command '$name/$time' to '$caller'";
113		929
114	push @{ $command{$name} }, [$time, $cb, $caller];	930	push @{ $COMMAND{$name} }, [$caller, $cb];
115	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
116	}	931	}
		932
		933	=item cf::register_extcmd $name => \&callback($pl,$packet);
		934
		935	Register a callbackf ro execution when the client sends an extcmd packet.
		936
		937	If the callback returns something, it is sent back as if reply was being
		938	called.
		939
		940	=cut
117		941
118	sub register_extcmd {	942	sub register_extcmd {
119	my ($name, $cb) = @_;	943	my ($name, $cb) = @_;
120		944
121	my $caller = caller;	945	my $caller = caller;
122	#warn "registering extcmd '$name' to '$caller'";	946	#warn "registering extcmd '$name' to '$caller'";
123		947
124	$extcmd{$name} = [$cb, $caller];	948	$EXTCMD{$name} = [$cb, $caller];
125	}	949	}
		950
		951	cf::player->attach (
		952	on_command => sub {
		953	my ($pl, $name, $params) = @_;
		954
		955	my $cb = $COMMAND{$name}
		956	or return;
		957
		958	for my $cmd (@$cb) {
		959	$cmd->[1]->($pl->ob, $params);
		960	}
		961
		962	cf::override;
		963	},
		964	on_extcmd => sub {
		965	my ($pl, $buf) = @_;
		966
		967	my $msg = eval { from_json $buf };
		968
		969	if (ref $msg) {
		970	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		971	if (my %reply = $cb->[0]->($pl, $msg)) {
		972	$pl->ext_reply ($msg->{msgid}, %reply);
		973	}
		974	}
		975	} else {
		976	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		977	}
		978
		979	cf::override;
		980	},
		981	);
126		982
127	sub register {	983	sub register {
128	my ($base, $pkg) = @_;	984	my ($base, $pkg) = @_;
129		985
130	for my $idx (0 .. $#EVENT) {	986	#TODO
131	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
132	#warn "registering $EVENT[$idx] hook to '$pkg'\n";
133	$hook[$idx]{$base} = $ref;
134	}
135	}
136	}	987	}
137		988
138	sub load_extension {	989	sub load_extension {
139	my ($path) = @_;	990	my ($path) = @_;
140		991
141	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	992	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
142	my $base = $1;	993	my $base = $1;
143	my $pkg = $1;	994	my $pkg = $1;
144	$pkg =~ s/[^[:word:]]/_/g;	995	$pkg =~ s/[^[:word:]]/_/g;
145	$pkg = "cf::ext::$pkg";	996	$pkg = "ext::$pkg";
146		997
147	warn "loading '$path' into '$pkg'\n";	998	warn "loading '$path' into '$pkg'\n";
148		999
149	open my $fh, "<:utf8", $path	1000	open my $fh, "<:utf8", $path
150	or die "$path: $!";	1001	or die "$path: $!";
…		…
154	. "#line 1 \"$path\"\n{\n"	1005	. "#line 1 \"$path\"\n{\n"
155	. (do { local $/; <$fh> })	1006	. (do { local $/; <$fh> })
156	. "\n};\n1";	1007	. "\n};\n1";
157		1008
158	eval $source	1009	eval $source
159	or die "$path: $@";	1010	or die $@ ? "$path: $@\n"
		1011	: "extension disabled.\n";
160		1012
161	push @exts, $pkg;	1013	push @exts, $pkg;
162	$ext_pkg{$base} = $pkg;	1014	$ext_pkg{$base} = $pkg;
163		1015
164	# no strict 'refs';	1016	# no strict 'refs';
165	# @{"$pkg\::ISA"} = cf::ext::;	1017	# @{"$pkg\::ISA"} = ext::;
166		1018
167	register $base, $pkg;	1019	register $base, $pkg;
168	}	1020	}
169		1021
170	sub unload_extension {	1022	sub unload_extension {
171	my ($pkg) = @_;	1023	my ($pkg) = @_;
172		1024
173	warn "removing extension $pkg\n";	1025	warn "removing extension $pkg\n";
174		1026
175	if (my $cb = $pkg->can ("on_unload")) {
176	$cb->($pkg);
177	}
178
179	# remove hooks	1027	# remove hooks
		1028	#TODO
180	for my $idx (0 .. $#EVENT) {	1029	# for my $idx (0 .. $#PLUGIN_EVENT) {
181	delete $hook[$idx]{$pkg};	1030	# delete $hook[$idx]{$pkg};
182	}	1031	# }
183		1032
184	# remove commands	1033	# remove commands
185	for my $name (keys %command) {	1034	for my $name (keys %COMMAND) {
186	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1035	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
187		1036
188	if (@cb) {	1037	if (@cb) {
189	$command{$name} = \@cb;	1038	$COMMAND{$name} = \@cb;
190	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
191	} else {	1039	} else {
192	delete $command{$name};
193	delete $COMMAND{"$name\000"};	1040	delete $COMMAND{$name};
194	}	1041	}
195	}	1042	}
196		1043
197	# remove extcmds	1044	# remove extcmds
198	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1045	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
199	delete $extcmd{$name};	1046	delete $EXTCMD{$name};
		1047	}
		1048
		1049	if (my $cb = $pkg->can ("unload")) {
		1050	eval {
		1051	$cb->($pkg);
		1052	1
		1053	} or warn "$pkg unloaded, but with errors: $@";
200	}	1054	}
201		1055
202	Symbol::delete_package $pkg;	1056	Symbol::delete_package $pkg;
203	}	1057	}
204		1058
205	sub load_extensions {	1059	sub load_extensions {
206	my $LIBDIR = maps_directory "perl";
207
208	for my $ext (<$LIBDIR/*.ext>) {	1060	for my $ext (<$LIBDIR/*.ext>) {
209	next unless -r $ext;	1061	next unless -r $ext;
210	eval {	1062	eval {
211	load_extension $ext;	1063	load_extension $ext;
212	1	1064	1
213	} or warn "$ext not loaded: $@";	1065	} or warn "$ext not loaded: $@";
214	}	1066	}
215	}	1067	}
216		1068
217	register_command "perl-reload", 0, sub {	1069	#############################################################################
		1070	# load/save/clean perl data associated with a map
		1071
		1072	*cf::mapsupport::on_clean = sub {
		1073	my ($map) = @_;
		1074
		1075	my $path = $map->tmpname;
		1076	defined $path or return;
		1077
		1078	unlink "$path.pst";
		1079	};
		1080
		1081	cf::map->attach (prio => -10000, package => cf::mapsupport::);
		1082
		1083	#############################################################################
		1084
		1085	=head2 CORE EXTENSIONS
		1086
		1087	Functions and methods that extend core crossfire objects.
		1088
		1089	=cut
		1090
		1091	package cf::player;
		1092
		1093	use Coro::AIO;
		1094
		1095	=head3 cf::player
		1096
		1097	=over 4
		1098
		1099	=item cf::player::find $login
		1100
		1101	Returns the given player object, loading it if necessary (might block).
		1102
		1103	=cut
		1104
		1105	sub playerdir($) {
		1106	cf::localdir
		1107	. "/"
		1108	. cf::playerdir
		1109	. "/"
		1110	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1111	}
		1112
		1113	sub path($) {
		1114	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1115
		1116	(playerdir $login) . "/$login.pl"
		1117	}
		1118
		1119	sub find_active($) {
		1120	$cf::PLAYER{$_[0]}
		1121	and $cf::PLAYER{$_[0]}->active
		1122	and $cf::PLAYER{$_[0]}
		1123	}
		1124
		1125	sub exists($) {
		1126	my ($login) = @_;
		1127
		1128	$cf::PLAYER{$login}
		1129	or cf::sync_job { !aio_stat $login }
		1130	}
		1131
		1132	sub find($) {
		1133	return $cf::PLAYER{$_[0]} || do {
		1134	my $login = $_[0];
		1135
		1136	my $guard = cf::lock_acquire "user_find:$login";
		1137
		1138	$cf::PLAYER{$_[0]} || do {
		1139	my $pl = load_pl path $login
		1140	or return;
		1141	$cf::PLAYER{$login} = $pl
		1142	}
		1143	}
		1144	}
		1145
		1146	sub save($) {
		1147	my ($pl) = @_;
		1148
		1149	return if $pl->{deny_save};
		1150
		1151	my $path = path $pl;
		1152	my $guard = cf::lock_acquire "user_save:$path";
		1153
		1154	return if $pl->{deny_save};
		1155
		1156	aio_mkdir playerdir $pl, 0770;
		1157	$pl->{last_save} = $cf::RUNTIME;
		1158
		1159	$pl->save_pl ($path);
		1160	Coro::cede;
		1161	}
		1162
		1163	sub new($) {
		1164	my ($login) = @_;
		1165
		1166	my $self = create;
		1167
		1168	$self->ob->name ($login);
		1169	$self->{deny_save} = 1;
		1170
		1171	$cf::PLAYER{$login} = $self;
		1172
		1173	$self
		1174	}
		1175
		1176	=item $pl->quit_character
		1177
		1178	Nukes the player without looking back. If logged in, the connection will
		1179	be destroyed. May block for a long time.
		1180
		1181	=cut
		1182
		1183	sub quit_character {
		1184	my ($pl) = @_;
		1185
		1186	$pl->{deny_save} = 1;
		1187	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1188
		1189	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1190	$pl->deactivate;
		1191	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1192	$pl->ns->destroy if $pl->ns;
		1193
		1194	my $path = playerdir $pl;
		1195	my $temp = "$path~$cf::RUNTIME~deleting~";
		1196	aio_rename $path, $temp;
		1197	delete $cf::PLAYER{$pl->ob->name};
		1198	$pl->destroy;
		1199	IO::AIO::aio_rmtree $temp;
		1200	}
		1201
		1202	=item cf::player::list_logins
		1203
		1204	Returns am arrayref of all valid playernames in the system, can take a
		1205	while and may block, so not sync_job-capable, ever.
		1206
		1207	=cut
		1208
		1209	sub list_logins {
		1210	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1211	or return [];
		1212
		1213	my @logins;
		1214
		1215	for my $login (@$dirs) {
		1216	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1217	aio_read $fh, 0, 512, my $buf, 0 or next;
		1218	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1219
		1220	utf8::decode $login;
		1221	push @logins, $login;
		1222	}
		1223
		1224	\@logins
		1225	}
		1226
		1227	=item $player->maps
		1228
		1229	Returns an arrayref of cf::path's of all maps that are private for this
		1230	player. May block.
		1231
		1232	=cut
		1233
		1234	sub maps($) {
		1235	my ($pl) = @_;
		1236
		1237	my $files = aio_readdir playerdir $pl
		1238	or return;
		1239
		1240	my @paths;
		1241
		1242	for (@$files) {
		1243	utf8::decode $_;
		1244	next if /\.(?:pl|pst)$/;
		1245	next unless /^$PATH_SEP/;
		1246
		1247	s/$PATH_SEP/\//g;
		1248	push @paths, new cf::path "~" . $pl->ob->name . "/" . $_;
		1249	}
		1250
		1251	\@paths
		1252	}
		1253
		1254	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1255
		1256	Sends an ext reply to the player.
		1257
		1258	=cut
		1259
		1260	sub ext_reply($$$%) {
		1261	my ($self, $id, %msg) = @_;
		1262
		1263	$msg{msgid} = $id;
		1264
		1265	$self->send ("ext " . cf::to_json \%msg);
		1266	}
		1267
		1268	package cf;
		1269
		1270	=back
		1271
		1272
		1273	=head3 cf::map
		1274
		1275	=over 4
		1276
		1277	=cut
		1278
		1279	package cf::map;
		1280
		1281	use Fcntl;
		1282	use Coro::AIO;
		1283
		1284	our $MAX_RESET = 3600;
		1285	our $DEFAULT_RESET = 3000;
		1286
		1287	sub generate_random_map {
218	my ($who, $arg) = @_;	1288	my ($path, $rmp) = @_;
219		1289
220	if ($who->flag (FLAG_WIZ)) {	1290	# mit "rum" bekleckern, nicht
221	$who->message ("reloading...");	1291	cf::map::_create_random_map
		1292	$path,
		1293	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1294	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1295	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1296	$rmp->{exit_on_final_map},
		1297	$rmp->{xsize}, $rmp->{ysize},
		1298	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1299	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1300	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1301	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1302	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1303	(cf::region::find $rmp->{region})
		1304	}
222		1305
223	warn "reloading...\n";	1306	# and all this just because we cannot iterate over
		1307	# all maps in C++...
		1308	sub change_all_map_light {
		1309	my ($change) = @_;
		1310
		1311	$_->change_map_light ($change)
		1312	for grep $_->outdoor, values %cf::MAP;
		1313	}
		1314
		1315	sub try_load_header($) {
		1316	my ($path) = @_;
		1317
		1318	utf8::encode $path;
		1319	aio_open $path, O_RDONLY, 0
		1320	or return;
		1321
		1322	my $map = cf::map::new
		1323	or return;
		1324
		1325	# for better error messages only, will be overwritten
		1326	$map->path ($path);
		1327
		1328	$map->load_header ($path)
		1329	or return;
		1330
		1331	$map->{load_path} = $path;
		1332
		1333	$map
		1334	}
		1335
		1336	sub find;
		1337	sub find {
		1338	my ($path, $origin) = @_;
		1339
		1340	#warn "find<$path,$origin>\n";#d#
		1341
		1342	$path = new cf::path $path, $origin && $origin->path;
		1343	my $key = $path->as_string;
		1344
		1345	cf::lock_wait "map_find:$key";
		1346
		1347	$cf::MAP{$key} || do {
		1348	my $guard = cf::lock_acquire "map_find:$key";
		1349
		1350	# do it the slow way
		1351	my $map = try_load_header $path->save_path;
		1352
		1353	Coro::cede;
		1354
		1355	if ($map) {
		1356	$map->last_access ((delete $map->{last_access})
		1357	|| $cf::RUNTIME); #d#
		1358	# safety
		1359	$map->{instantiate_time} = $cf::RUNTIME
		1360	if $map->{instantiate_time} > $cf::RUNTIME;
		1361	} else {
		1362	if (my $rmp = $path->random_map_params) {
		1363	$map = generate_random_map $key, $rmp;
		1364	} else {
		1365	$map = try_load_header $path->load_path;
		1366	}
		1367
		1368	$map or return;
		1369
		1370	$map->{load_original} = 1;
		1371	$map->{instantiate_time} = $cf::RUNTIME;
		1372	$map->last_access ($cf::RUNTIME);
		1373	$map->instantiate;
		1374
		1375	# per-player maps become, after loading, normal maps
		1376	$map->per_player (0) if $path->{user_rel};
		1377	}
		1378
		1379	$map->path ($key);
		1380	$map->{path} = $path;
		1381	$map->{last_save} = $cf::RUNTIME;
		1382
		1383	Coro::cede;
		1384
		1385	if ($map->should_reset) {
		1386	$map->reset;
		1387	undef $guard;
		1388	$map = find $path
		1389	or return;
		1390	}
		1391
		1392	$cf::MAP{$key} = $map
		1393	}
		1394	}
		1395
		1396	sub load {
		1397	my ($self) = @_;
		1398
		1399	my $path = $self->{path};
		1400	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1401
		1402	return if $self->in_memory != cf::MAP_SWAPPED;
		1403
		1404	$self->in_memory (cf::MAP_LOADING);
		1405
		1406	$self->alloc;
		1407	$self->load_objects ($self->{load_path}, 1)
		1408	or return;
		1409
		1410	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1411	if delete $self->{load_original};
		1412
		1413	if (my $uniq = $path->uniq_path) {
		1414	utf8::encode $uniq;
		1415	if (aio_open $uniq, O_RDONLY, 0) {
		1416	$self->clear_unique_items;
		1417	$self->load_objects ($uniq, 0);
		1418	}
		1419	}
		1420
		1421	Coro::cede;
		1422
		1423	# now do the right thing for maps
		1424	$self->link_multipart_objects;
		1425
		1426	if ($self->{path}->is_style_map) {
		1427	$self->{deny_save} = 1;
		1428	$self->{deny_reset} = 1;
		1429	} else {
		1430	$self->fix_auto_apply;
		1431	$self->decay_objects;
		1432	$self->update_buttons;
		1433	$self->set_darkness_map;
		1434	$self->difficulty ($self->estimate_difficulty)
		1435	unless $self->difficulty;
		1436	$self->activate;
		1437	}
		1438
		1439	Coro::cede;
		1440
		1441	$self->in_memory (cf::MAP_IN_MEMORY);
		1442	}
		1443
		1444	sub find_sync {
		1445	my ($path, $origin) = @_;
		1446
		1447	cf::sync_job { cf::map::find $path, $origin }
		1448	}
		1449
		1450	sub do_load_sync {
		1451	my ($map) = @_;
		1452
		1453	cf::sync_job { $map->load };
		1454	}
		1455
		1456	sub save {
		1457	my ($self) = @_;
		1458
		1459	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1460
		1461	$self->{last_save} = $cf::RUNTIME;
		1462
		1463	return unless $self->dirty;
		1464
		1465	my $save = $self->{path}->save_path; utf8::encode $save;
		1466	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1467
		1468	$self->{load_path} = $save;
		1469
		1470	return if $self->{deny_save};
		1471
		1472	local $self->{last_access} = $self->last_access;#d#
		1473
		1474	cf::async {
		1475	$_->contr->save for $self->players;
		1476	};
		1477
		1478	if ($uniq) {
		1479	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1480	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1481	} else {
		1482	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1483	}
		1484	}
		1485
		1486	sub swap_out {
		1487	my ($self) = @_;
		1488
		1489	# save first because save cedes
		1490	$self->save;
		1491
		1492	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1493
		1494	return if $self->players;
		1495	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1496	return if $self->{deny_save};
		1497
		1498	$self->clear;
		1499	$self->in_memory (cf::MAP_SWAPPED);
		1500	}
		1501
		1502	sub reset_at {
		1503	my ($self) = @_;
		1504
		1505	# TODO: safety, remove and allow resettable per-player maps
		1506	return 1e99 if $self->{path}{user_rel};
		1507	return 1e99 if $self->{deny_reset};
		1508
		1509	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1510	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1511
		1512	$time + $to
		1513	}
		1514
		1515	sub should_reset {
		1516	my ($self) = @_;
		1517
		1518	$self->reset_at <= $cf::RUNTIME
		1519	}
		1520
		1521	sub unlink_save {
		1522	my ($self) = @_;
		1523
		1524	utf8::encode (my $save = $self->{path}->save_path);
		1525	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1526	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1527	}
		1528
		1529	sub rename {
		1530	my ($self, $new_path) = @_;
		1531
		1532	$self->unlink_save;
		1533
		1534	delete $cf::MAP{$self->path};
		1535	$self->{path} = new cf::path $new_path;
		1536	$self->path ($self->{path}->as_string);
		1537	$cf::MAP{$self->path} = $self;
		1538
		1539	$self->save;
		1540	}
		1541
		1542	sub reset {
		1543	my ($self) = @_;
		1544
		1545	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1546
		1547	return if $self->players;
		1548	return if $self->{path}{user_rel};#d#
		1549
		1550	warn "resetting map ", $self->path;#d#
		1551
		1552	delete $cf::MAP{$self->path};
		1553
		1554	$_->clear_links_to ($self) for values %cf::MAP;
		1555
		1556	$self->unlink_save;
		1557	$self->destroy;
		1558	}
		1559
		1560	my $nuke_counter = "aaaa";
		1561
		1562	sub nuke {
		1563	my ($self) = @_;
		1564
		1565	$self->{deny_save} = 1;
		1566	$self->reset_timeout (1);
		1567	$self->rename ("{nuke}/" . ($nuke_counter++));
		1568	$self->reset; # polite request, might not happen
		1569	}
		1570
		1571	sub customise_for {
		1572	my ($map, $ob) = @_;
		1573
		1574	if ($map->per_player) {
		1575	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1576	}
		1577
		1578	$map
		1579	}
		1580
		1581	package cf;
		1582
		1583	=back
		1584
		1585	=head3 cf::object
		1586
		1587	=cut
		1588
		1589	package cf::object;
		1590
		1591	=over 4
		1592
		1593	=item $ob->inv_recursive
		1594
		1595	Returns the inventory of the object _and_ their inventories, recursively.
		1596
		1597	=cut
		1598
		1599	sub inv_recursive_;
		1600	sub inv_recursive_ {
		1601	map { $_, inv_recursive_ $_->inv } @_
		1602	}
		1603
		1604	sub inv_recursive {
		1605	inv_recursive_ inv $_[0]
		1606	}
		1607
		1608	package cf;
		1609
		1610	=back
		1611
		1612	=head3 cf::object::player
		1613
		1614	=over 4
		1615
		1616	=item $player_object->reply ($npc, $msg[, $flags])
		1617
		1618	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1619	can be C<undef>. Does the right thing when the player is currently in a
		1620	dialogue with the given NPC character.
		1621
		1622	=cut
		1623
		1624	# rough implementation of a future "reply" method that works
		1625	# with dialog boxes.
		1626	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1627	sub cf::object::player::reply($$$;$) {
		1628	my ($self, $npc, $msg, $flags) = @_;
		1629
		1630	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1631
		1632	if ($self->{record_replies}) {
		1633	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1634	} else {
		1635	$msg = $npc->name . " says: $msg" if $npc;
		1636	$self->message ($msg, $flags);
		1637	}
		1638	}
		1639
		1640	=item $player_object->may ("access")
		1641
		1642	Returns wether the given player is authorized to access resource "access"
		1643	(e.g. "command_wizcast").
		1644
		1645	=cut
		1646
		1647	sub cf::object::player::may {
		1648	my ($self, $access) = @_;
		1649
		1650	$self->flag (cf::FLAG_WIZ) ||
		1651	(ref $cf::CFG{"may_$access"}
		1652	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1653	: $cf::CFG{"may_$access"})
		1654	}
		1655
		1656	=item $player_object->enter_link
		1657
		1658	Freezes the player and moves him/her to a special map (C<{link}>).
		1659
		1660	The player should be reaosnably safe there for short amounts of time. You
		1661	I<MUST> call C<leave_link> as soon as possible, though.
		1662
		1663	=item $player_object->leave_link ($map, $x, $y)
		1664
		1665	Moves the player out of the specila link map onto the given map. If the
		1666	map is not valid (or omitted), the player will be moved back to the
		1667	location he/she was before the call to C<enter_link>, or, if that fails,
		1668	to the emergency map position.
		1669
		1670	Might block.
		1671
		1672	=cut
		1673
		1674	sub cf::object::player::enter_link {
		1675	my ($self) = @_;
		1676
		1677	$self->deactivate_recursive;
		1678
		1679	return if $self->map == $LINK_MAP;
		1680
		1681	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1682	if $self->map;
		1683
		1684	$self->enter_map ($LINK_MAP, 20, 20);
		1685	}
		1686
		1687	sub cf::object::player::leave_link {
		1688	my ($self, $map, $x, $y) = @_;
		1689
		1690	my $link_pos = delete $self->{_link_pos};
		1691
		1692	unless ($map) {
		1693	# restore original map position
		1694	($map, $x, $y) = @{ $link_pos || [] };
		1695	$map = cf::map::find $map;
		1696
		1697	unless ($map) {
		1698	($map, $x, $y) = @$EMERGENCY_POSITION;
		1699	$map = cf::map::find $map
		1700	or die "FATAL: cannot load emergency map\n";
		1701	}
		1702	}
		1703
		1704	($x, $y) = (-1, -1)
		1705	unless (defined $x) && (defined $y);
		1706
		1707	# use -1 or undef as default coordinates, not 0, 0
		1708	($x, $y) = ($map->enter_x, $map->enter_y)
		1709	if $x <=0 && $y <= 0;
		1710
		1711	$map->load;
		1712
		1713	return unless $self->contr->active;
		1714	$self->activate_recursive;
		1715	$self->enter_map ($map, $x, $y);
		1716	}
		1717
		1718	cf::player->attach (
		1719	on_logout => sub {
		1720	my ($pl) = @_;
		1721
		1722	# abort map switching before logout
		1723	if ($pl->ob->{_link_pos}) {
		1724	cf::sync_job {
		1725	$pl->ob->leave_link
		1726	};
		1727	}
		1728	},
		1729	on_login => sub {
		1730	my ($pl) = @_;
		1731
		1732	# try to abort aborted map switching on player login :)
		1733	# should happen only on crashes
		1734	if ($pl->ob->{_link_pos}) {
		1735	$pl->ob->enter_link;
		1736	(async {
		1737	# we need this sleep as the login has a concurrent enter_exit running
		1738	# and this sleep increases chances of the player not ending up in scorn
		1739	$pl->ob->reply (undef,
		1740	"There was an internal problem at your last logout, "
		1741	. "the server will try to bring you to your intended destination in a second.",
		1742	cf::NDI_RED);
		1743	Coro::Timer::sleep 1;
		1744	$pl->ob->leave_link;
		1745	})->prio (2);
		1746	}
		1747	},
		1748	);
		1749
		1750	=item $player_object->goto ($path, $x, $y)
		1751
		1752	=cut
		1753
		1754	sub cf::object::player::goto {
		1755	my ($self, $path, $x, $y) = @_;
		1756
		1757	$path = new cf::path $path;
		1758	$path ne "/" or Carp::cluck ("oy");#d#
		1759
		1760	$self->enter_link;
		1761
		1762	(async {
		1763	my $map = cf::map::find $path->as_string;
		1764	$map = $map->customise_for ($self) if $map;
		1765
		1766	# warn "entering ", $map->path, " at ($x, $y)\n"
		1767	# if $map;
		1768
		1769	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1770
		1771	$self->leave_link ($map, $x, $y);
		1772	})->prio (1);
		1773	}
		1774
		1775	=item $player_object->enter_exit ($exit_object)
		1776
		1777	=cut
		1778
		1779	sub parse_random_map_params {
		1780	my ($spec) = @_;
		1781
		1782	my $rmp = { # defaults
		1783	xsize => 10,
		1784	ysize => 10,
		1785	};
		1786
		1787	for (split /\n/, $spec) {
		1788	my ($k, $v) = split /\s+/, $_, 2;
		1789
		1790	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1791	}
		1792
		1793	$rmp
		1794	}
		1795
		1796	sub prepare_random_map {
		1797	my ($exit) = @_;
		1798
		1799	# all this does is basically replace the /! path by
		1800	# a new random map path (?random/...) with a seed
		1801	# that depends on the exit object
		1802
		1803	my $rmp = parse_random_map_params $exit->msg;
		1804
		1805	if ($exit->map) {
		1806	$rmp->{region} = $exit->map->region_name;
		1807	$rmp->{origin_map} = $exit->map->path;
		1808	$rmp->{origin_x} = $exit->x;
		1809	$rmp->{origin_y} = $exit->y;
		1810	}
		1811
		1812	$rmp->{random_seed} ||= $exit->random_seed;
		1813
		1814	my $data = cf::to_json $rmp;
		1815	my $md5 = Digest::MD5::md5_hex $data;
		1816
		1817	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1818	aio_write $fh, 0, (length $data), $data, 0;
		1819
		1820	$exit->slaying ("?random/$md5");
		1821	$exit->msg (undef);
		1822	}
		1823	}
		1824
		1825	sub cf::object::player::enter_exit {
		1826	my ($self, $exit) = @_;
		1827
		1828	return unless $self->type == cf::PLAYER;
		1829
		1830	$self->enter_link;
		1831
		1832	(async {
		1833	$self->deactivate_recursive; # just to be sure
		1834	unless (eval {
		1835	prepare_random_map $exit
		1836	if $exit->slaying eq "/!";
		1837
		1838	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1839	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1840
		1841	1;
		1842	}) {
		1843	$self->message ("Something went wrong deep within the crossfire server. "
		1844	. "I'll try to bring you back to the map you were before. "
		1845	. "Please report this to the dungeon master",
		1846	cf::NDI_UNIQUE | cf::NDI_RED);
		1847
		1848	warn "ERROR in enter_exit: $@";
		1849	$self->leave_link;
		1850	}
		1851	})->prio (1);
		1852	}
		1853
		1854	=head3 cf::client
		1855
		1856	=over 4
		1857
		1858	=item $client->send_drawinfo ($text, $flags)
		1859
		1860	Sends a drawinfo packet to the client. Circumvents output buffering so
		1861	should not be used under normal circumstances.
		1862
		1863	=cut
		1864
		1865	sub cf::client::send_drawinfo {
		1866	my ($self, $text, $flags) = @_;
		1867
		1868	utf8::encode $text;
		1869	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1870	}
		1871
		1872
		1873	=item $success = $client->query ($flags, "text", \&cb)
		1874
		1875	Queues a query to the client, calling the given callback with
		1876	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1877	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1878
		1879	Queries can fail, so check the return code. Or don't, as queries will become
		1880	reliable at some point in the future.
		1881
		1882	=cut
		1883
		1884	sub cf::client::query {
		1885	my ($self, $flags, $text, $cb) = @_;
		1886
		1887	return unless $self->state == ST_PLAYING
		1888	|| $self->state == ST_SETUP
		1889	|| $self->state == ST_CUSTOM;
		1890
		1891	$self->state (ST_CUSTOM);
		1892
		1893	utf8::encode $text;
		1894	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1895
		1896	$self->send_packet ($self->{query_queue}[0][0])
		1897	if @{ $self->{query_queue} } == 1;
		1898	}
		1899
		1900	cf::client->attach (
		1901	on_reply => sub {
		1902	my ($ns, $msg) = @_;
		1903
		1904	# this weird shuffling is so that direct followup queries
		1905	# get handled first
		1906	my $queue = delete $ns->{query_queue}
		1907	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1908
		1909	(shift @$queue)->[1]->($msg);
		1910
		1911	push @{ $ns->{query_queue} }, @$queue;
		1912
		1913	if (@{ $ns->{query_queue} } == @$queue) {
		1914	if (@$queue) {
		1915	$ns->send_packet ($ns->{query_queue}[0][0]);
		1916	} else {
		1917	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1918	}
		1919	}
		1920	},
		1921	);
		1922
		1923	=item $client->async (\&cb)
		1924
		1925	Create a new coroutine, running the specified callback. The coroutine will
		1926	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1927	or loss of connection).
		1928
		1929	=cut
		1930
		1931	sub cf::client::async {
		1932	my ($self, $cb) = @_;
		1933
		1934	my $coro = &Coro::async ($cb);
		1935
		1936	$coro->on_destroy (sub {
		1937	delete $self->{_coro}{$coro+0};
		1938	});
		1939
		1940	$self->{_coro}{$coro+0} = $coro;
		1941
		1942	$coro
		1943	}
		1944
		1945	cf::client->attach (
		1946	on_destroy => sub {
		1947	my ($ns) = @_;
		1948
		1949	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1950	},
		1951	);
		1952
		1953	=back
		1954
		1955
		1956	=head2 SAFE SCRIPTING
		1957
		1958	Functions that provide a safe environment to compile and execute
		1959	snippets of perl code without them endangering the safety of the server
		1960	itself. Looping constructs, I/O operators and other built-in functionality
		1961	is not available in the safe scripting environment, and the number of
		1962	functions and methods that can be called is greatly reduced.
		1963
		1964	=cut
		1965
		1966	our $safe = new Safe "safe";
		1967	our $safe_hole = new Safe::Hole;
		1968
		1969	$SIG{FPE} = 'IGNORE';
		1970
		1971	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		1972
		1973	# here we export the classes and methods available to script code
		1974
		1975	=pod
		1976
		1977	The following fucntions and emthods are available within a safe environment:
		1978
		1979	cf::object contr pay_amount pay_player map
		1980	cf::object::player player
		1981	cf::player peaceful
		1982	cf::map trigger
		1983
		1984	=cut
		1985
		1986	for (
		1987	["cf::object" => qw(contr pay_amount pay_player map)],
		1988	["cf::object::player" => qw(player)],
		1989	["cf::player" => qw(peaceful)],
		1990	["cf::map" => qw(trigger)],
		1991	) {
		1992	no strict 'refs';
		1993	my ($pkg, @funs) = @$_;
		1994	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		1995	for @funs;
		1996	}
		1997
		1998	=over 4
		1999
		2000	=item @retval = safe_eval $code, [var => value, ...]
		2001
		2002	Compiled and executes the given perl code snippet. additional var/value
		2003	pairs result in temporary local (my) scalar variables of the given name
		2004	that are available in the code snippet. Example:
		2005
		2006	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2007
		2008	=cut
		2009
		2010	sub safe_eval($;@) {
		2011	my ($code, %vars) = @_;
		2012
		2013	my $qcode = $code;
		2014	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		2015	$qcode =~ s/\n/\\n/g;
		2016
		2017	local $_;
		2018	local @safe::cf::_safe_eval_args = values %vars;
		2019
		2020	my $eval =
		2021	"do {\n"
		2022	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		2023	. "#line 0 \"{$qcode}\"\n"
		2024	. $code
		2025	. "\n}"
		2026	;
		2027
		2028	sub_generation_inc;
		2029	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		2030	sub_generation_inc;
		2031
		2032	if ($@) {
		2033	warn "$@";
		2034	warn "while executing safe code '$code'\n";
		2035	warn "with arguments " . (join " ", %vars) . "\n";
		2036	}
		2037
		2038	wantarray ? @res : $res[0]
		2039	}
		2040
		2041	=item cf::register_script_function $function => $cb
		2042
		2043	Register a function that can be called from within map/npc scripts. The
		2044	function should be reasonably secure and should be put into a package name
		2045	like the extension.
		2046
		2047	Example: register a function that gets called whenever a map script calls
		2048	C<rent::overview>, as used by the C<rent> extension.
		2049
		2050	cf::register_script_function "rent::overview" => sub {
		2051	...
		2052	};
		2053
		2054	=cut
		2055
		2056	sub register_script_function {
		2057	my ($fun, $cb) = @_;
		2058
		2059	no strict 'refs';
		2060	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		2061	}
		2062
		2063	=back
		2064
		2065	=cut
		2066
		2067	#############################################################################
		2068
		2069	=head2 EXTENSION DATABASE SUPPORT
		2070
		2071	Crossfire maintains a very simple database for extension use. It can
		2072	currently store anything that can be serialised using Storable, which
		2073	excludes objects.
		2074
		2075	The parameter C<$family> should best start with the name of the extension
		2076	using it, it should be unique.
		2077
		2078	=over 4
		2079
		2080	=item $hashref = cf::db_get $family
		2081
		2082	Return a hashref for use by the extension C<$family>, which can be
		2083	modified. After modifications, you have to call C<cf::db_dirty> or
		2084	C<cf::db_sync>.
		2085
		2086	=item $value = cf::db_get $family => $key
		2087
		2088	Returns a single value from the database
		2089
		2090	=item cf::db_put $family => $hashref
		2091
		2092	Stores the given family hashref into the database. Updates are delayed, if
		2093	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2094
		2095	=item cf::db_put $family => $key => $value
		2096
		2097	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2098	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2099
		2100	=item cf::db_dirty
		2101
		2102	Marks the database as dirty, to be updated at a later time.
		2103
		2104	=item cf::db_sync
		2105
		2106	Immediately write the database to disk I<if it is dirty>.
		2107
		2108	=cut
		2109
		2110	our $DB;
		2111
		2112	{
		2113	my $path = cf::localdir . "/database.pst";
		2114
		2115	sub db_load() {
		2116	$DB = stat $path ? Storable::retrieve $path : { };
		2117	}
		2118
		2119	my $pid;
		2120
		2121	sub db_save() {
		2122	waitpid $pid, 0 if $pid;
		2123	if (0 == ($pid = fork)) {
		2124	$DB->{_meta}{version} = 1;
		2125	Storable::nstore $DB, "$path~";
		2126	rename "$path~", $path;
		2127	cf::_exit 0 if defined $pid;
		2128	}
		2129	}
		2130
		2131	my $dirty;
		2132
		2133	sub db_sync() {
		2134	db_save if $dirty;
		2135	undef $dirty;
		2136	}
		2137
		2138	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2139	db_sync;
		2140	});
		2141
		2142	sub db_dirty() {
		2143	$dirty = 1;
		2144	$idle->start;
		2145	}
		2146
		2147	sub db_get($;$) {
		2148	@_ >= 2
		2149	? $DB->{$_[0]}{$_[1]}
		2150	: ($DB->{$_[0]} ||= { })
		2151	}
		2152
		2153	sub db_put($$;$) {
		2154	if (@_ >= 3) {
		2155	$DB->{$_[0]}{$_[1]} = $_[2];
		2156	} else {
		2157	$DB->{$_[0]} = $_[1];
		2158	}
		2159	db_dirty;
		2160	}
		2161
		2162	cf::global->attach (
		2163	prio => 10000,
		2164	on_cleanup => sub {
		2165	db_sync;
		2166	},
		2167	);
		2168	}
		2169
		2170	#############################################################################
		2171	# the server's main()
		2172
		2173	sub cfg_load {
		2174	open my $fh, "<:utf8", cf::confdir . "/config"
		2175	or return;
		2176
		2177	local $/;
		2178	*CFG = YAML::Syck::Load <$fh>;
		2179
		2180	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2181
		2182	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2183	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2184
		2185	if (exists $CFG{mlockall}) {
224	eval {	2186	eval {
225	$_->cancel for Event::all_watchers;	2187	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
226		2188	and die "WARNING: m(un)lockall failed: $!\n";
227	unload_extension $_ for @exts;
228	delete $INC{"cf.pm"};
229
230	# don't, removes xs symbols, too
231	#Symbol::delete_package __PACKAGE__;
232
233	require cf;
234	};	2189	};
235	warn $@ if $@;	2190	warn $@ if $@;
236	$who->message ($@) if $@;	2191	}
237	warn "reloaded\n";	2192	}
238		2193
239	$who->message ("reloaded");	2194	sub main {
240	} else {	2195	# we must not ever block the main coroutine
241	$who->message ("Intruder Alert!");	2196	local $Coro::idle = sub {
		2197	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2198	async { Event::one_event };
242	}	2199	};
		2200
		2201	cfg_load;
		2202	db_load;
		2203	load_extensions;
		2204	Event::loop;
		2205	}
		2206
		2207	#############################################################################
		2208	# initialisation and cleanup
		2209
		2210	# install some emergency cleanup handlers
		2211	BEGIN {
		2212	for my $signal (qw(INT HUP TERM)) {
		2213	Event->signal (
		2214	data => WF_AUTOCANCEL,
		2215	signal => $signal,
		2216	cb => sub {
		2217	cf::cleanup "SIG$signal";
		2218	},
		2219	);
		2220	}
		2221	}
		2222
		2223	sub emergency_save {
		2224	my $freeze_guard = cf::freeze_mainloop;
		2225
		2226	warn "enter emergency perl save\n";
		2227
		2228	cf::sync_job {
		2229	# use a peculiar iteration method to avoid tripping on perl
		2230	# refcount bugs in for. also avoids problems with players
		2231	# and maps saved/Destroyed asynchronously.
		2232	warn "begin emergency player save\n";
		2233	for my $login (keys %cf::PLAYER) {
		2234	my $pl = $cf::PLAYER{$login} or next;
		2235	$pl->valid or next;
		2236	$pl->save;
		2237	}
		2238	warn "end emergency player save\n";
		2239
		2240	warn "begin emergency map save\n";
		2241	for my $path (keys %cf::MAP) {
		2242	my $map = $cf::MAP{$path} or next;
		2243	$map->valid or next;
		2244	$map->save;
		2245	}
		2246	warn "end emergency map save\n";
		2247	};
		2248
		2249	warn "leave emergency perl save\n";
		2250	}
		2251
		2252	sub reload() {
		2253	# can/must only be called in main
		2254	if ($Coro::current != $Coro::main) {
		2255	warn "can only reload from main coroutine\n";
		2256	return;
		2257	}
		2258
		2259	warn "reloading...";
		2260
		2261	my $guard = freeze_mainloop;
		2262	cf::emergency_save;
		2263
		2264	eval {
		2265	# if anything goes wrong in here, we should simply crash as we already saved
		2266
		2267	# cancel all watchers
		2268	for (Event::all_watchers) {
		2269	$_->cancel if $_->data & WF_AUTOCANCEL;
		2270	}
		2271
		2272	# cancel all extension coros
		2273	$_->cancel for values %EXT_CORO;
		2274	%EXT_CORO = ();
		2275
		2276	# unload all extensions
		2277	for (@exts) {
		2278	warn "unloading <$_>";
		2279	unload_extension $_;
		2280	}
		2281
		2282	# unload all modules loaded from $LIBDIR
		2283	while (my ($k, $v) = each %INC) {
		2284	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2285
		2286	warn "removing <$k>";
		2287	delete $INC{$k};
		2288
		2289	$k =~ s/\.pm$//;
		2290	$k =~ s/\//::/g;
		2291
		2292	if (my $cb = $k->can ("unload_module")) {
		2293	$cb->();
		2294	}
		2295
		2296	Symbol::delete_package $k;
		2297	}
		2298
		2299	# sync database to disk
		2300	cf::db_sync;
		2301	IO::AIO::flush;
		2302
		2303	# get rid of safe::, as good as possible
		2304	Symbol::delete_package "safe::$_"
		2305	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2306
		2307	# remove register_script_function callbacks
		2308	# TODO
		2309
		2310	# unload cf.pm "a bit"
		2311	delete $INC{"cf.pm"};
		2312
		2313	# don't, removes xs symbols, too,
		2314	# and global variables created in xs
		2315	#Symbol::delete_package __PACKAGE__;
		2316
		2317	# reload cf.pm
		2318	warn "reloading cf.pm";
		2319	require cf;
		2320	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2321
		2322	# load config and database again
		2323	cf::cfg_load;
		2324	cf::db_load;
		2325
		2326	# load extensions
		2327	warn "load extensions";
		2328	cf::load_extensions;
		2329
		2330	# reattach attachments to objects
		2331	warn "reattach";
		2332	_global_reattach;
		2333	reattach $_ for values %MAP;
		2334	};
		2335
		2336	if ($@) {
		2337	warn $@;
		2338	warn "error while reloading, exiting.";
		2339	exit 1;
		2340	}
		2341
		2342	warn "reloaded successfully";
243	};	2343	};
244		2344
245	#############################################################################	2345	#############################################################################
246	# extcmd framework, basically convert ext <id> <pkg> arg1 args
247	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
248		2346
249	sub on_extcmd {	2347	unless ($LINK_MAP) {
		2348	$LINK_MAP = cf::map::new;
		2349
		2350	$LINK_MAP->width (41);
		2351	$LINK_MAP->height (41);
		2352	$LINK_MAP->alloc;
		2353	$LINK_MAP->path ("{link}");
		2354	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2355	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2356
		2357	# dirty hack because... archetypes are not yet loaded
		2358	Event->timer (
		2359	after => 10,
		2360	cb => sub {
		2361	$_[0]->w->cancel;
		2362
		2363	# provide some exits "home"
		2364	my $exit = cf::object::new "exit";
		2365
		2366	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2367	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2368	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2369
		2370	$LINK_MAP->insert ($exit->clone, 19, 19);
		2371	$LINK_MAP->insert ($exit->clone, 19, 20);
		2372	$LINK_MAP->insert ($exit->clone, 19, 21);
		2373	$LINK_MAP->insert ($exit->clone, 20, 19);
		2374	$LINK_MAP->insert ($exit->clone, 20, 21);
		2375	$LINK_MAP->insert ($exit->clone, 21, 19);
		2376	$LINK_MAP->insert ($exit->clone, 21, 20);
		2377	$LINK_MAP->insert ($exit->clone, 21, 21);
		2378
		2379	$exit->destroy;
		2380	});
		2381
		2382	$LINK_MAP->{deny_save} = 1;
		2383	$LINK_MAP->{deny_reset} = 1;
		2384
		2385	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2386	}
		2387
		2388	register "<global>", __PACKAGE__;
		2389
		2390	register_command "reload" => sub {
250	my ($pl, $buf) = @_;	2391	my ($who, $arg) = @_;
251		2392
252	my ($type) = $buf =~ s/^(\S+) // ? $1 : "";	2393	if ($who->flag (FLAG_WIZ)) {
253		2394	$who->message ("start of reload.");
254	$extcmd{$type}[0]->($pl, $buf)	2395	reload;
255	if $extcmd{$type};	2396	$who->message ("end of reload.");
256	}	2397	}
257
258	#############################################################################
259	# load/save/clean perl data associated with a map
260
261	*on_mapclean = sub {
262	my ($map) = @_;
263
264	my $path = $map->tmpname;
265	defined $path or return;
266
267	unlink "$path.cfperl";
268	};	2398	};
269		2399
270	*on_mapin =	2400	unshift @INC, $LIBDIR;
271	*on_mapload = sub {
272	my ($map) = @_;
273		2401
274	my $path = $map->tmpname;	2402	$TICK_WATCHER = Event->timer (
275	$path = $map->path unless defined $path;	2403	reentrant => 0,
		2404	prio => 0,
		2405	at => $NEXT_TICK || $TICK,
		2406	data => WF_AUTOCANCEL,
		2407	cb => sub {
		2408	cf::server_tick; # one server iteration
		2409	$RUNTIME += $TICK;
		2410	$NEXT_TICK += $TICK;
276		2411
277	open my $fh, "<:raw", "$path.cfperl"	2412	$WAIT_FOR_TICK->broadcast;
278	or return; # no perl data	2413	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
279		2414
280	my $data = Storable::thaw do { local $/; <$fh> };	2415	# if we are delayed by four ticks or more, skip them all
		2416	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
281		2417
282	$data->{version} <= 1	2418	$TICK_WATCHER->at ($NEXT_TICK);
283	or return; # too new	2419	$TICK_WATCHER->start;
284
285	$map->_set_obs ($data->{obs});
286	};
287
288	*on_mapout = sub {
289	my ($map) = @_;
290
291	my $path = $map->tmpname;
292	$path = $map->path unless defined $path;
293
294	my $obs = $map->_get_obs;
295
296	if (defined $obs) {
297	open my $fh, ">:raw", "$path.cfperl"
298	or die "$path.cfperl: $!";
299
300	stat $path;
301
302	print $fh Storable::nfreeze {
303	size => (stat _)[7],
304	time => (stat _)[9],
305	version => 1,
306	obs => $obs,
307	};
308
309	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
310	} else {
311	unlink "$path.cfperl";
312	}	2420	},
313	};	2421	);
314		2422
315	#############################################################################	2423	IO::AIO::max_poll_time $TICK * 0.2;
316	# load/save perl data associated with player->ob objects
317		2424
318	*on_player_load = sub {	2425	Event->io (
319	my ($ob, $path) = @_;	2426	fd => IO::AIO::poll_fileno,
		2427	poll => 'r',
		2428	prio => 5,
		2429	data => WF_AUTOCANCEL,
		2430	cb => \&IO::AIO::poll_cb,
		2431	);
320		2432
321	if (open my $fh, "<:raw", "$path.cfperl") {	2433	Event->timer (
322		2434	data => WF_AUTOCANCEL,
323	#d##TODO#remove	2435	after => 0,
324		2436	interval => 10,
325	my $data = Storable::thaw do { local $/; <$fh> };	2437	cb => sub {
326		2438	(Coro::unblock_sub {
327	$data->{version} <= 1	2439	write_runtime
328	or return; # too new	2440	or warn "ERROR: unable to write runtime file: $!";
329		2441	})->();
330	%$ob = %{$data->{ob}};
331	return;
332	}	2442	},
		2443	);
333		2444
334	for my $o ($ob, $ob->inv) {	2445	END { cf::emergency_save }
335	if (my $value = $o->get_ob_key_value ("_perl_data")) {
336	$o->set_ob_key_value ("_perl_data");
337
338	%$o = %{ Storable::thaw pack "H*", $value };
339	}
340	}
341	};
342
343	*on_player_save = sub {
344	my ($ob, $path) = @_;
345
346	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
347	for grep %$_, $ob, $ob->inv;
348
349	unlink "$path.cfperl";#d##TODO#remove
350	};
351
352	register "<global>", __PACKAGE__;
353
354	unshift @INC, maps_directory "perl";
355
356	load_extensions;
357		2446
358	1	2447	1
359		2448

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