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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.11 by root, Sun Mar 26 15:52:03 2006 UTC vs.
Revision 1.109 by root, Sun Dec 31 22:23:12 2006 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
7	use strict;	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;
8		19
9	our %COMMAND;	20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
		24	use Time::HiRes;
		25
		26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		27
		28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
		30
		31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
		35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
10	our @EVENT;	39	our @EVENT;
11	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
12	our %PROP_IDX;	41
		42	our $TICK = MAX_TIME * 1e-6;
		43	our $TICK_WATCHER;
		44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	#############################################################################
		78
		79	=head2 GLOBAL VARIABLES
		80
		81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
		91
		92	=item $cf::LIBDIR
		93
		94	The perl library directory, where extensions and cf-specific modules can
		95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
		100
		101	=item $cf::TICK
		102
		103	The interval between server ticks, in seconds.
		104
		105	=item %cf::CFG
		106
		107	Configuration for the server, loaded from C</etc/crossfire/config>, or
		108	from wherever your confdir points to.
		109
		110	=back
		111
		112	=cut
13		113
14	BEGIN {	114	BEGIN {
15	@EVENT = map lc, @EVENT;
16
17	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
18	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
19	$msg .= "\n"	119	$msg .= "\n"
20	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
21		121
22	print STDERR "cfperl: $msg";
23	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
24	};	123	};
25	}	124	}
26		125
27	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
28		132
29	# generate property mutators	133	# we bless all objects into (empty) derived classes to force a method lookup
30	sub prop_gen {	134	# within the Safe compartment.
31	my ($prefix, $class) = @_;	135	for my $pkg (qw(
32		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
33	no strict 'refs';	142	no strict 'refs';
34		143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
35	for my $prop (keys %PROP_TYPE) {
36	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
37	my $sub = lc $1;
38
39	my $type = $PROP_TYPE{$prop};
40	my $idx = $PROP_IDX {$prop};
41
42	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
43	$_[0]->get_property ($type, $idx)
44	};
45
46	*{"$class\::set_$sub"} = sub {
47	$_[0]->set_property ($type, $idx, $_[1]);
48	} unless $ignore_set{$prop};
49	}
50	}	144	}
51		145
52	# auto-generate most of the API	146	$Event::DIED = sub {
53		147	warn "error in event callback: @_";
54	prop_gen OBJECT_PROP => "cf::object";	148	};
55	# CFAPI_OBJECT_ANIMATION?
56	prop_gen PLAYER_PROP => "cf::object::player";
57
58	prop_gen MAP_PROP => "cf::map";
59	prop_gen ARCH_PROP => "cf::arch";
60
61	# guessed hierarchies
62
63	@cf::object::player::ISA = 'cf::object';
64	@cf::object::map::ISA = 'cf::object';
65		149
66	my %ext_pkg;	150	my %ext_pkg;
67	my @exts;	151	my @exts;
68	my @hook;	152	my @hook;
69	my %command;
70		153
71	sub inject_event {	154	=head2 UTILITY FUNCTIONS
		155
		156	=over 4
		157
		158	=cut
		159
		160	use JSON::Syck (); # TODO# replace by JSON::PC once working
		161
		162	=item $ref = cf::from_json $json
		163
		164	Converts a JSON string into the corresponding perl data structure.
		165
		166	=cut
		167
		168	sub from_json($) {
		169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		170	JSON::Syck::Load $_[0]
		171	}
		172
		173	=item $json = cf::to_json $ref
		174
		175	Converts a perl data structure into its JSON representation.
		176
		177	=cut
		178
		179	sub to_json($) {
		180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		181	JSON::Syck::Dump $_[0]
		182	}
		183
		184	=item cf::sync_job { BLOCK }
		185
		186	The design of crossfire+ requires that the main coro ($Coro::main) is
		187	always able to handle events or runnable, as crossfire+ is only partly
		188	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		189
		190	If it must be done, put the blocking parts into C<sync_job>. This will run
		191	the given BLOCK in another coroutine while waiting for the result. The
		192	server will be frozen during this time, so the block should either finish
		193	fast or be very important.
		194
		195	=cut
		196
		197	sub sync_job(&) {
72	my ($data) = @_;	198	my ($job) = @_;
73		199
74	my $cb = $hook[$data->{event_code}]{$data->{extension}}	200	my $busy = 1;
		201	my @res;
		202
		203	# TODO: use suspend/resume instead
		204	local $FREEZE = 1;
		205
		206	my $coro = Coro::async {
		207	@res = eval { $job->() };
		208	warn $@ if $@;
		209	undef $busy;
		210	};
		211
		212	if ($Coro::current == $Coro::main) {
		213	$coro->prio (Coro::PRIO_MAX);
		214	while ($busy) {
		215	Coro::cede_notself;
		216	Event::one_event unless Coro::nready;
		217	}
		218	} else {
		219	$coro->join;
		220	}
		221
		222	wantarray ? @res : $res[0]
		223	}
		224
		225	=item $coro = cf::coro { BLOCK }
		226
		227	Creates and returns a new coro. This coro is automcatially being canceled
		228	when the extension calling this is being unloaded.
		229
		230	=cut
		231
		232	sub coro(&) {
		233	my $cb = shift;
		234
		235	my $coro; $coro = async {
		236	eval {
		237	$cb->();
		238	};
		239	warn $@ if $@;
		240	};
		241
		242	$coro->on_destroy (sub {
		243	delete $EXT_CORO{$coro+0};
		244	});
		245	$EXT_CORO{$coro+0} = $coro;
		246
		247	$coro
		248	}
		249
		250	sub write_runtime {
		251	my $runtime = cf::localdir . "/runtime";
		252
		253	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
75	or return;	254	or return;
76		255
77	$cb->($data)	256	my $value = $cf::RUNTIME;
78	}	257	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		258	and return;
79		259
80	sub inject_global_event {	260	aio_fsync $fh
81	my ($data) = @_;	261	and return;
82		262
83	my $cb = $hook[$data->{event_code}]	263	close $fh
84	or return;	264	or return;
85		265
86	List::Util::max map $_->($data), values %$cb	266	aio_rename "$runtime~", $runtime
87	}	267	and return;
88		268
89	sub inject_command {
90	my ($name, $obj, $params) = @_;
91
92	for my $cmd (@{ $command{$name} }) {
93	$cmd->[1]->($obj, $params);
94	}
95
96	-1	269	1
97	}	270	}
		271
		272	=back
		273
		274	=cut
		275
		276	#############################################################################
		277
		278	package cf::path;
		279
		280	sub new {
		281	my ($class, $path, $base) = @_;
		282
		283	my $self = bless { }, $class;
		284
		285	if ($path =~ s{^\?random/}{}) {
		286	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		287	$self->{random} = cf::from_json $data;
		288	} else {
		289	if ($path =~ s{^~([^/]+)?}{}) {
		290	$self->{user_rel} = 1;
		291
		292	if (defined $1) {
		293	$self->{user} = $1;
		294	} elsif ($base =~ m{^~([^/]+)/}) {
		295	$self->{user} = $1;
		296	} else {
		297	warn "cannot resolve user-relative path without user <$path,$base>\n";
		298	}
		299	} elsif ($path =~ /^\//) {
		300	# already absolute
		301	} else {
		302	$base =~ s{[^/]+/?$}{};
		303	return $class->new ("$base/$path");
		304	}
		305
		306	for ($path) {
		307	redo if s{/\.?/}{/};
		308	redo if s{/[^/]+/\.\./}{/};
		309	}
		310	}
		311
		312	$self->{path} = $path;
		313
		314	$self
		315	}
		316
		317	# the name / primary key / in-game path
		318	sub as_string {
		319	my ($self) = @_;
		320
		321	$self->{user_rel} ? "~$self->{user}$self->{path}"
		322	: $self->{random} ? "?random/$self->{path}"
		323	: $self->{path}
		324	}
		325
		326	# the displayed name, this is a one way mapping
		327	sub visible_name {
		328	my ($self) = @_;
		329
		330	# if (my $rmp = $self->{random}) {
		331	# # todo: be more intelligent about this
		332	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		333	# } else {
		334	$self->as_string
		335	# }
		336	}
		337
		338	# escape the /'s in the path
		339	sub _escaped_path {
		340	# ∕ is U+2215
		341	(my $path = $_[0]{path}) =~ s/\//∕/g;
		342	$path
		343	}
		344
		345	# the original (read-only) location
		346	sub load_path {
		347	my ($self) = @_;
		348
		349	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		350	}
		351
		352	# the temporary/swap location
		353	sub save_path {
		354	my ($self) = @_;
		355
		356	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		357	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		358	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		359	}
		360
		361	# the unique path, might be eq to save_path
		362	sub uniq_path {
		363	my ($self) = @_;
		364
		365	$self->{user_rel} || $self->{random}
		366	? undef
		367	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		368	}
		369
		370	# return random map parameters, or undef
		371	sub random_map_params {
		372	my ($self) = @_;
		373
		374	$self->{random}
		375	}
		376
		377	# this is somewhat ugly, but style maps do need special treatment
		378	sub is_style_map {
		379	$_[0]{path} =~ m{^/styles/}
		380	}
		381
		382	package cf;
		383
		384	#############################################################################
		385
		386	=head2 ATTACHABLE OBJECTS
		387
		388	Many objects in crossfire are so-called attachable objects. That means you can
		389	attach callbacks/event handlers (a collection of which is called an "attachment")
		390	to it. All such attachable objects support the following methods.
		391
		392	In the following description, CLASS can be any of C<global>, C<object>
		393	C<player>, C<client> or C<map> (i.e. the attachable objects in
		394	crossfire+).
		395
		396	=over 4
		397
		398	=item $attachable->attach ($attachment, key => $value...)
		399
		400	=item $attachable->detach ($attachment)
		401
		402	Attach/detach a pre-registered attachment to a specific object and give it
		403	the specified key/value pairs as arguments.
		404
		405	Example, attach a minesweeper attachment to the given object, making it a
		406	10x10 minesweeper game:
		407
		408	$obj->attach (minesweeper => width => 10, height => 10);
		409
		410	=item $bool = $attachable->attached ($name)
		411
		412	Checks wether the named attachment is currently attached to the object.
		413
		414	=item cf::CLASS->attach ...
		415
		416	=item cf::CLASS->detach ...
		417
		418	Define an anonymous attachment and attach it to all objects of the given
		419	CLASS. See the next function for an explanation of its arguments.
		420
		421	You can attach to global events by using the C<cf::global> class.
		422
		423	Example, log all player logins:
		424
		425	cf::player->attach (
		426	on_login => sub {
		427	my ($pl) = @_;
		428	...
		429	},
		430	);
		431
		432	Example, attach to the jeweler skill:
		433
		434	cf::object->attach (
		435	type => cf::SKILL,
		436	subtype => cf::SK_JEWELER,
		437	on_use_skill => sub {
		438	my ($sk, $ob, $part, $dir, $msg) = @_;
		439	...
		440	},
		441	);
		442
		443	=item cf::CLASS::attachment $name, ...
		444
		445	Register an attachment by C<$name> through which attachable objects of the
		446	given CLASS can refer to this attachment.
		447
		448	Some classes such as crossfire maps and objects can specify attachments
		449	that are attached at load/instantiate time, thus the need for a name.
		450
		451	These calls expect any number of the following handler/hook descriptions:
		452
		453	=over 4
		454
		455	=item prio => $number
		456
		457	Set the priority for all following handlers/hooks (unless overwritten
		458	by another C<prio> setting). Lower priority handlers get executed
		459	earlier. The default priority is C<0>, and many built-in handlers are
		460	registered at priority C<-1000>, so lower priorities should not be used
		461	unless you know what you are doing.
		462
		463	=item type => $type
		464
		465	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		466	given type of objects only (the additional parameter C<subtype> can be
		467	used to further limit to the given subtype).
		468
		469	=item on_I<event> => \&cb
		470
		471	Call the given code reference whenever the named event happens (event is
		472	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		473	handlers are recognised generally depends on the type of object these
		474	handlers attach to).
		475
		476	See F<include/eventinc.h> for the full list of events supported, and their
		477	class.
		478
		479	=item package => package::
		480
		481	Look for sub functions of the name C<< on_I<event> >> in the given
		482	package and register them. Only handlers for eevents supported by the
		483	object/class are recognised.
		484
		485	=back
		486
		487	Example, define an attachment called "sockpuppet" that calls the given
		488	event handler when a monster attacks:
		489
		490	cf::object::attachment sockpuppet =>
		491	on_skill_attack => sub {
		492	my ($self, $victim) = @_;
		493	...
		494	}
		495	}
		496
		497	=item $attachable->valid
		498
		499	Just because you have a perl object does not mean that the corresponding
		500	C-level object still exists. If you try to access an object that has no
		501	valid C counterpart anymore you get an exception at runtime. This method
		502	can be used to test for existence of the C object part without causing an
		503	exception.
		504
		505	=cut
		506
		507	# the following variables are defined in .xs and must not be re-created
		508	our @CB_GLOBAL = (); # registry for all global events
		509	our @CB_ATTACHABLE = (); # registry for all attachables
		510	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		511	our @CB_PLAYER = ();
		512	our @CB_CLIENT = ();
		513	our @CB_TYPE = (); # registry for type (cf-object class) based events
		514	our @CB_MAP = ();
		515
		516	my %attachment;
		517
		518	sub _attach_cb($$$$) {
		519	my ($registry, $event, $prio, $cb) = @_;
		520
		521	use sort 'stable';
		522
		523	$cb = [$prio, $cb];
		524
		525	@{$registry->[$event]} = sort
		526	{ $a->[0] cmp $b->[0] }
		527	@{$registry->[$event] || []}, $cb;
		528	}
		529
		530	# hack
		531	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		532
		533	# attach handles attaching event callbacks
		534	# the only thing the caller has to do is pass the correct
		535	# registry (== where the callback attaches to).
		536	sub _attach {
		537	my ($registry, $klass, @arg) = @_;
		538
		539	my $object_type;
		540	my $prio = 0;
		541	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		542
		543	#TODO: get rid of this hack
		544	if ($attachable_klass{$klass}) {
		545	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		546	}
		547
		548	while (@arg) {
		549	my $type = shift @arg;
		550
		551	if ($type eq "prio") {
		552	$prio = shift @arg;
		553
		554	} elsif ($type eq "type") {
		555	$object_type = shift @arg;
		556	$registry = $CB_TYPE[$object_type] ||= [];
		557
		558	} elsif ($type eq "subtype") {
		559	defined $object_type or Carp::croak "subtype specified without type";
		560	my $object_subtype = shift @arg;
		561	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		562
		563	} elsif ($type eq "package") {
		564	my $pkg = shift @arg;
		565
		566	while (my ($name, $id) = each %cb_id) {
		567	if (my $cb = $pkg->can ($name)) {
		568	_attach_cb $registry, $id, $prio, $cb;
		569	}
		570	}
		571
		572	} elsif (exists $cb_id{$type}) {
		573	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		574
		575	} elsif (ref $type) {
		576	warn "attaching objects not supported, ignoring.\n";
		577
		578	} else {
		579	shift @arg;
		580	warn "attach argument '$type' not supported, ignoring.\n";
		581	}
		582	}
		583	}
		584
		585	sub _object_attach {
		586	my ($obj, $name, %arg) = @_;
		587
		588	return if exists $obj->{_attachment}{$name};
		589
		590	if (my $attach = $attachment{$name}) {
		591	my $registry = $obj->registry;
		592
		593	for (@$attach) {
		594	my ($klass, @attach) = @$_;
		595	_attach $registry, $klass, @attach;
		596	}
		597
		598	$obj->{$name} = \%arg;
		599	} else {
		600	warn "object uses attachment '$name' that is not available, postponing.\n";
		601	}
		602
		603	$obj->{_attachment}{$name} = undef;
		604	}
		605
		606	sub cf::attachable::attach {
		607	if (ref $_[0]) {
		608	_object_attach @_;
		609	} else {
		610	_attach shift->_attach_registry, @_;
		611	}
		612	};
		613
		614	# all those should be optimised
		615	sub cf::attachable::detach {
		616	my ($obj, $name) = @_;
		617
		618	if (ref $obj) {
		619	delete $obj->{_attachment}{$name};
		620	reattach ($obj);
		621	} else {
		622	Carp::croak "cannot, currently, detach class attachments";
		623	}
		624	};
		625
		626	sub cf::attachable::attached {
		627	my ($obj, $name) = @_;
		628
		629	exists $obj->{_attachment}{$name}
		630	}
		631
		632	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		633	eval "#line " . __LINE__ . " 'cf.pm'
		634	sub cf::\L$klass\E::_attach_registry {
		635	(\\\@CB_$klass, KLASS_$klass)
		636	}
		637
		638	sub cf::\L$klass\E::attachment {
		639	my \$name = shift;
		640
		641	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		642	}
		643	";
		644	die if $@;
		645	}
		646
		647	our $override;
		648	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		649
		650	sub override {
		651	$override = 1;
		652	@invoke_results = ();
		653	}
		654
		655	sub do_invoke {
		656	my $event = shift;
		657	my $callbacks = shift;
		658
		659	@invoke_results = ();
		660
		661	local $override;
		662
		663	for (@$callbacks) {
		664	eval { &{$_->[1]} };
		665
		666	if ($@) {
		667	warn "$@";
		668	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		669	override;
		670	}
		671
		672	return 1 if $override;
		673	}
		674
		675	0
		676	}
		677
		678	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		679
		680	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		681
		682	Generate an object-specific event with the given arguments.
		683
		684	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		685	removed in future versions), and there is no public API to access override
		686	results (if you must, access C<@cf::invoke_results> directly).
		687
		688	=back
		689
		690	=cut
		691
		692	#############################################################################
		693	# object support
		694
		695	sub reattach {
		696	# basically do the same as instantiate, without calling instantiate
		697	my ($obj) = @_;
		698
		699	my $registry = $obj->registry;
		700
		701	@$registry = ();
		702
		703	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		704
		705	for my $name (keys %{ $obj->{_attachment} || {} }) {
		706	if (my $attach = $attachment{$name}) {
		707	for (@$attach) {
		708	my ($klass, @attach) = @$_;
		709	_attach $registry, $klass, @attach;
		710	}
		711	} else {
		712	warn "object uses attachment '$name' that is not available, postponing.\n";
		713	}
		714	}
		715	}
		716
		717	cf::attachable->attach (
		718	prio => -1000000,
		719	on_instantiate => sub {
		720	my ($obj, $data) = @_;
		721
		722	$data = from_json $data;
		723
		724	for (@$data) {
		725	my ($name, $args) = @$_;
		726
		727	$obj->attach ($name, %{$args || {} });
		728	}
		729	},
		730	on_reattach => \&reattach,
		731	on_clone => sub {
		732	my ($src, $dst) = @_;
		733
		734	@{$dst->registry} = @{$src->registry};
		735
		736	%$dst = %$src;
		737
		738	%{$dst->{_attachment}} = %{$src->{_attachment}}
		739	if exists $src->{_attachment};
		740	},
		741	);
		742
		743	sub object_freezer_save {
		744	my ($filename, $rdata, $objs) = @_;
		745
		746	sync_job {
		747	if (length $$rdata) {
		748	warn sprintf "saving %s (%d,%d)\n",
		749	$filename, length $$rdata, scalar @$objs;
		750
		751	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		752	chmod SAVE_MODE, $fh;
		753	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		754	aio_fsync $fh;
		755	close $fh;
		756
		757	if (@$objs) {
		758	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		759	chmod SAVE_MODE, $fh;
		760	my $data = Storable::nfreeze { version => 1, objs => $objs };
		761	aio_write $fh, 0, (length $data), $data, 0;
		762	aio_fsync $fh;
		763	close $fh;
		764	aio_rename "$filename.pst~", "$filename.pst";
		765	}
		766	} else {
		767	aio_unlink "$filename.pst";
		768	}
		769
		770	aio_rename "$filename~", $filename;
		771	} else {
		772	warn "FATAL: $filename~: $!\n";
		773	}
		774	} else {
		775	aio_unlink $filename;
		776	aio_unlink "$filename.pst";
		777	}
		778	}
		779	}
		780
		781	sub object_freezer_as_string {
		782	my ($rdata, $objs) = @_;
		783
		784	use Data::Dumper;
		785
		786	$$rdata . Dumper $objs
		787	}
		788
		789	sub object_thawer_load {
		790	my ($filename) = @_;
		791
		792	my ($data, $av);
		793
		794	(aio_load $filename, $data) >= 0
		795	or return;
		796
		797	unless (aio_stat "$filename.pst") {
		798	(aio_load "$filename.pst", $av) >= 0
		799	or return;
		800	$av = eval { (Storable::thaw <$av>)->{objs} };
		801	}
		802
		803	return ($data, $av);
		804	}
		805
		806	#############################################################################
		807	# command handling &c
		808
		809	=item cf::register_command $name => \&callback($ob,$args);
		810
		811	Register a callback for execution when the client sends the user command
		812	$name.
		813
		814	=cut
98		815
99	sub register_command {	816	sub register_command {
100	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
101		818
102	my $caller = caller;	819	my $caller = caller;
103
104	warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
105		821
106	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
107	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
108	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
		833
		834	sub register_extcmd {
		835	my ($name, $cb) = @_;
		836
		837	my $caller = caller;
		838	#warn "registering extcmd '$name' to '$caller'";
		839
		840	$EXTCMD{$name} = [$cb, $caller];
		841	}
		842
		843	cf::player->attach (
		844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
		846
		847	my $cb = $COMMAND{$name}
		848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->[0]->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
109		874
110	sub register {	875	sub register {
111	my ($base, $pkg) = @_;	876	my ($base, $pkg) = @_;
112		877
113	for my $idx (0 .. $#EVENT) {	878	#TODO
114	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
115	warn "registering $EVENT[$idx] hook to '$pkg'\n";
116	$hook[$idx]{$base} = $ref;
117	}
118	}
119	}	879	}
120		880
121	sub load_extension {	881	sub load_extension {
122	my ($path) = @_;	882	my ($path) = @_;
123		883
124	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	884	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
125	my $base = $1;	885	my $base = $1;
126	my $pkg = $1;	886	my $pkg = $1;
127	$pkg =~ s/[^[:word:]]/_/g;	887	$pkg =~ s/[^[:word:]]/_/g;
128	$pkg = "cf::ext::$pkg";	888	$pkg = "ext::$pkg";
129		889
130	warn "loading '$path' into '$pkg'\n";	890	warn "loading '$path' into '$pkg'\n";
131		891
132	open my $fh, "<:utf8", $path	892	open my $fh, "<:utf8", $path
133	or die "$path: $!";	893	or die "$path: $!";
…		…
137	. "#line 1 \"$path\"\n{\n"	897	. "#line 1 \"$path\"\n{\n"
138	. (do { local $/; <$fh> })	898	. (do { local $/; <$fh> })
139	. "\n};\n1";	899	. "\n};\n1";
140		900
141	eval $source	901	eval $source
142	or die "$path: $@";	902	or die $@ ? "$path: $@\n"
		903	: "extension disabled.\n";
143		904
144	push @exts, $pkg;	905	push @exts, $pkg;
145	$ext_pkg{$base} = $pkg;	906	$ext_pkg{$base} = $pkg;
146		907
147	# no strict 'refs';	908	# no strict 'refs';
148	# @{"$pkg\::ISA"} = cf::ext::;	909	# @{"$pkg\::ISA"} = ext::;
149		910
150	register $base, $pkg;	911	register $base, $pkg;
151	}	912	}
152		913
153	sub unload_extension {	914	sub unload_extension {
154	my ($pkg) = @_;	915	my ($pkg) = @_;
155		916
156	warn "removing extension $pkg\n";	917	warn "removing extension $pkg\n";
157		918
158	# remove hooks	919	# remove hooks
		920	#TODO
159	for my $idx (0 .. $#EVENT) {	921	# for my $idx (0 .. $#PLUGIN_EVENT) {
160	delete $hook[$idx]{$pkg};	922	# delete $hook[$idx]{$pkg};
161	}	923	# }
162		924
163	# remove commands	925	# remove commands
164	for my $name (keys %command) {	926	for my $name (keys %COMMAND) {
165	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	927	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
166		928
167	if (@cb) {	929	if (@cb) {
168	$command{$name} = \@cb;	930	$COMMAND{$name} = \@cb;
169	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
170	} else {	931	} else {
171	delete $command{$name};
172	delete $COMMAND{"$name\000"};	932	delete $COMMAND{$name};
173	}	933	}
		934	}
		935
		936	# remove extcmds
		937	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
		938	delete $EXTCMD{$name};
		939	}
		940
		941	if (my $cb = $pkg->can ("unload")) {
		942	eval {
		943	$cb->($pkg);
		944	1
		945	} or warn "$pkg unloaded, but with errors: $@";
174	}	946	}
175		947
176	Symbol::delete_package $pkg;	948	Symbol::delete_package $pkg;
177	}	949	}
178		950
179	sub load_extensions {	951	sub load_extensions {
180	my $LIBDIR = maps_directory "perl";
181
182	for my $ext (<$LIBDIR/*.ext>) {	952	for my $ext (<$LIBDIR/*.ext>) {
183	next unless -r $ext;	953	next unless -r $ext;
184	eval {	954	eval {
185	load_extension $ext;	955	load_extension $ext;
186	1	956	1
187	} or warn "$ext not loaded: $@";	957	} or warn "$ext not loaded: $@";
188	}	958	}
189	}	959	}
190		960
191	register_command "perl-reload", 0, sub {	961	#############################################################################
		962	# load/save/clean perl data associated with a map
		963
		964	*cf::mapsupport::on_clean = sub {
192	my ($who, $arg) = @_;	965	my ($map) = @_;
193		966
194	if ($who->flag (FLAG_WIZ)) {	967	my $path = $map->tmpname;
195	$who->message ("reloading...");	968	defined $path or return;
196		969
197	warn "reloading...\n";	970	unlink "$path.pst";
		971	};
		972
		973	cf::map->attach (prio => -10000, package => cf::mapsupport::);
		974
		975	#############################################################################
		976	# load/save perl data associated with player->ob objects
		977
		978	sub all_objects(@) {
		979	@_, map all_objects ($_->inv), @_
		980	}
		981
		982	# TODO: compatibility cruft, remove when no longer needed
		983	cf::player->attach (
		984	on_load => sub {
		985	my ($pl, $path) = @_;
		986
		987	for my $o (all_objects $pl->ob) {
		988	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		989	$o->set_ob_key_value ("_perl_data");
		990
		991	%$o = %{ Storable::thaw pack "H*", $value };
		992	}
		993	}
		994	},
		995	);
		996
		997	#############################################################################
		998
		999	=head2 CORE EXTENSIONS
		1000
		1001	Functions and methods that extend core crossfire objects.
		1002
		1003	=head3 cf::player
		1004
		1005	=over 4
		1006
		1007	=item cf::player::exists $login
		1008
		1009	Returns true when the given account exists.
		1010
		1011	=cut
		1012
		1013	sub cf::player::exists($) {
		1014	cf::player::find $_[0]
		1015	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
		1016	}
		1017
		1018	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1019
		1020	Sends an ext reply to the player.
		1021
		1022	=cut
		1023
		1024	sub cf::player::ext_reply($$$%) {
		1025	my ($self, $id, %msg) = @_;
		1026
		1027	$msg{msgid} = $id;
		1028
		1029	$self->send ("ext " . to_json \%msg);
		1030	}
		1031
		1032	=back
		1033
		1034	=head3 cf::object::player
		1035
		1036	=over 4
		1037
		1038	=item $player_object->reply ($npc, $msg[, $flags])
		1039
		1040	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1041	can be C<undef>. Does the right thing when the player is currently in a
		1042	dialogue with the given NPC character.
		1043
		1044	=cut
		1045
		1046	# rough implementation of a future "reply" method that works
		1047	# with dialog boxes.
		1048	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1049	sub cf::object::player::reply($$$;$) {
		1050	my ($self, $npc, $msg, $flags) = @_;
		1051
		1052	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1053
		1054	if ($self->{record_replies}) {
		1055	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1056	} else {
		1057	$msg = $npc->name . " says: $msg" if $npc;
		1058	$self->message ($msg, $flags);
		1059	}
		1060	}
		1061
		1062	=item $player_object->may ("access")
		1063
		1064	Returns wether the given player is authorized to access resource "access"
		1065	(e.g. "command_wizcast").
		1066
		1067	=cut
		1068
		1069	sub cf::object::player::may {
		1070	my ($self, $access) = @_;
		1071
		1072	$self->flag (cf::FLAG_WIZ) ||
		1073	(ref $cf::CFG{"may_$access"}
		1074	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1075	: $cf::CFG{"may_$access"})
		1076	}
		1077
		1078	=head3 cf::client
		1079
		1080	=over 4
		1081
		1082	=item $client->send_drawinfo ($text, $flags)
		1083
		1084	Sends a drawinfo packet to the client. Circumvents output buffering so
		1085	should not be used under normal circumstances.
		1086
		1087	=cut
		1088
		1089	sub cf::client::send_drawinfo {
		1090	my ($self, $text, $flags) = @_;
		1091
		1092	utf8::encode $text;
		1093	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1094	}
		1095
		1096
		1097	=item $success = $client->query ($flags, "text", \&cb)
		1098
		1099	Queues a query to the client, calling the given callback with
		1100	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1101	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1102
		1103	Queries can fail, so check the return code. Or don't, as queries will become
		1104	reliable at some point in the future.
		1105
		1106	=cut
		1107
		1108	sub cf::client::query {
		1109	my ($self, $flags, $text, $cb) = @_;
		1110
		1111	return unless $self->state == ST_PLAYING
		1112	|| $self->state == ST_SETUP
		1113	|| $self->state == ST_CUSTOM;
		1114
		1115	$self->state (ST_CUSTOM);
		1116
		1117	utf8::encode $text;
		1118	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1119
		1120	$self->send_packet ($self->{query_queue}[0][0])
		1121	if @{ $self->{query_queue} } == 1;
		1122	}
		1123
		1124	cf::client->attach (
		1125	on_reply => sub {
		1126	my ($ns, $msg) = @_;
		1127
		1128	# this weird shuffling is so that direct followup queries
		1129	# get handled first
		1130	my $queue = delete $ns->{query_queue};
		1131
		1132	(shift @$queue)->[1]->($msg);
		1133
		1134	push @{ $ns->{query_queue} }, @$queue;
		1135
		1136	if (@{ $ns->{query_queue} } == @$queue) {
		1137	if (@$queue) {
		1138	$ns->send_packet ($ns->{query_queue}[0][0]);
		1139	} else {
		1140	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1141	}
		1142	}
		1143	},
		1144	);
		1145
		1146	=item $client->coro (\&cb)
		1147
		1148	Create a new coroutine, running the specified callback. The coroutine will
		1149	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1150	or loss of connection).
		1151
		1152	=cut
		1153
		1154	sub cf::client::coro {
		1155	my ($self, $cb) = @_;
		1156
		1157	my $coro; $coro = async {
198	eval {	1158	eval {
199	unload_extension $_ for @exts;	1159	$cb->();
200	delete $INC{"cf.pm"};
201
202	# don't, removes xs symbols, too
203	#Symbol::delete_package $pkg;
204
205	require cf;
206	};	1160	};
207	warn $@ if $@;	1161	warn $@ if $@;
208	$who->message ($@) if $@;
209	warn "reloaded\n";
210
211	$who->message ("reloaded");
212	} else {
213	$who->message ("Intruder Alert!");
214	}	1162	};
		1163
		1164	$coro->on_destroy (sub {
		1165	delete $self->{_coro}{$coro+0};
		1166	});
		1167
		1168	$self->{_coro}{$coro+0} = $coro;
		1169
		1170	$coro
		1171	}
		1172
		1173	cf::client->attach (
		1174	on_destroy => sub {
		1175	my ($ns) = @_;
		1176
		1177	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1178	},
		1179	);
		1180
		1181	=back
		1182
		1183
		1184	=head2 SAFE SCRIPTING
		1185
		1186	Functions that provide a safe environment to compile and execute
		1187	snippets of perl code without them endangering the safety of the server
		1188	itself. Looping constructs, I/O operators and other built-in functionality
		1189	is not available in the safe scripting environment, and the number of
		1190	functions and methods that can be called is greatly reduced.
		1191
		1192	=cut
		1193
		1194	our $safe = new Safe "safe";
		1195	our $safe_hole = new Safe::Hole;
		1196
		1197	$SIG{FPE} = 'IGNORE';
		1198
		1199	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		1200
		1201	# here we export the classes and methods available to script code
		1202
		1203	=pod
		1204
		1205	The following fucntions and emthods are available within a safe environment:
		1206
		1207	cf::object contr pay_amount pay_player map
		1208	cf::object::player player
		1209	cf::player peaceful
		1210	cf::map trigger
		1211
		1212	=cut
		1213
		1214	for (
		1215	["cf::object" => qw(contr pay_amount pay_player map)],
		1216	["cf::object::player" => qw(player)],
		1217	["cf::player" => qw(peaceful)],
		1218	["cf::map" => qw(trigger)],
		1219	) {
		1220	no strict 'refs';
		1221	my ($pkg, @funs) = @$_;
		1222	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		1223	for @funs;
		1224	}
		1225
		1226	=over 4
		1227
		1228	=item @retval = safe_eval $code, [var => value, ...]
		1229
		1230	Compiled and executes the given perl code snippet. additional var/value
		1231	pairs result in temporary local (my) scalar variables of the given name
		1232	that are available in the code snippet. Example:
		1233
		1234	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1235
		1236	=cut
		1237
		1238	sub safe_eval($;@) {
		1239	my ($code, %vars) = @_;
		1240
		1241	my $qcode = $code;
		1242	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		1243	$qcode =~ s/\n/\\n/g;
		1244
		1245	local $_;
		1246	local @safe::cf::_safe_eval_args = values %vars;
		1247
		1248	my $eval =
		1249	"do {\n"
		1250	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		1251	. "#line 0 \"{$qcode}\"\n"
		1252	. $code
		1253	. "\n}"
		1254	;
		1255
		1256	sub_generation_inc;
		1257	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		1258	sub_generation_inc;
		1259
		1260	if ($@) {
		1261	warn "$@";
		1262	warn "while executing safe code '$code'\n";
		1263	warn "with arguments " . (join " ", %vars) . "\n";
		1264	}
		1265
		1266	wantarray ? @res : $res[0]
		1267	}
		1268
		1269	=item cf::register_script_function $function => $cb
		1270
		1271	Register a function that can be called from within map/npc scripts. The
		1272	function should be reasonably secure and should be put into a package name
		1273	like the extension.
		1274
		1275	Example: register a function that gets called whenever a map script calls
		1276	C<rent::overview>, as used by the C<rent> extension.
		1277
		1278	cf::register_script_function "rent::overview" => sub {
		1279	...
		1280	};
		1281
		1282	=cut
		1283
		1284	sub register_script_function {
		1285	my ($fun, $cb) = @_;
		1286
		1287	no strict 'refs';
		1288	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1289	}
		1290
		1291	=back
		1292
		1293	=cut
		1294
		1295	#############################################################################
		1296
		1297	=head2 EXTENSION DATABASE SUPPORT
		1298
		1299	Crossfire maintains a very simple database for extension use. It can
		1300	currently store anything that can be serialised using Storable, which
		1301	excludes objects.
		1302
		1303	The parameter C<$family> should best start with the name of the extension
		1304	using it, it should be unique.
		1305
		1306	=over 4
		1307
		1308	=item $hashref = cf::db_get $family
		1309
		1310	Return a hashref for use by the extension C<$family>, which can be
		1311	modified. After modifications, you have to call C<cf::db_dirty> or
		1312	C<cf::db_sync>.
		1313
		1314	=item $value = cf::db_get $family => $key
		1315
		1316	Returns a single value from the database
		1317
		1318	=item cf::db_put $family => $hashref
		1319
		1320	Stores the given family hashref into the database. Updates are delayed, if
		1321	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1322
		1323	=item cf::db_put $family => $key => $value
		1324
		1325	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1326	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1327
		1328	=item cf::db_dirty
		1329
		1330	Marks the database as dirty, to be updated at a later time.
		1331
		1332	=item cf::db_sync
		1333
		1334	Immediately write the database to disk I<if it is dirty>.
		1335
		1336	=cut
		1337
		1338	our $DB;
		1339
		1340	{
		1341	my $path = cf::localdir . "/database.pst";
		1342
		1343	sub db_load() {
		1344	warn "loading database $path\n";#d# remove later
		1345	$DB = stat $path ? Storable::retrieve $path : { };
		1346	}
		1347
		1348	my $pid;
		1349
		1350	sub db_save() {
		1351	warn "saving database $path\n";#d# remove later
		1352	waitpid $pid, 0 if $pid;
		1353	if (0 == ($pid = fork)) {
		1354	$DB->{_meta}{version} = 1;
		1355	Storable::nstore $DB, "$path~";
		1356	rename "$path~", $path;
		1357	cf::_exit 0 if defined $pid;
		1358	}
		1359	}
		1360
		1361	my $dirty;
		1362
		1363	sub db_sync() {
		1364	db_save if $dirty;
		1365	undef $dirty;
		1366	}
		1367
		1368	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1369	db_sync;
		1370	});
		1371
		1372	sub db_dirty() {
		1373	$dirty = 1;
		1374	$idle->start;
		1375	}
		1376
		1377	sub db_get($;$) {
		1378	@_ >= 2
		1379	? $DB->{$_[0]}{$_[1]}
		1380	: ($DB->{$_[0]} ||= { })
		1381	}
		1382
		1383	sub db_put($$;$) {
		1384	if (@_ >= 3) {
		1385	$DB->{$_[0]}{$_[1]} = $_[2];
		1386	} else {
		1387	$DB->{$_[0]} = $_[1];
		1388	}
		1389	db_dirty;
		1390	}
		1391
		1392	cf::global->attach (
		1393	prio => 10000,
		1394	on_cleanup => sub {
		1395	db_sync;
		1396	},
		1397	);
		1398	}
		1399
		1400	#############################################################################
		1401	# the server's main()
		1402
		1403	sub cfg_load {
		1404	open my $fh, "<:utf8", cf::confdir . "/config"
		1405	or return;
		1406
		1407	local $/;
		1408	*CFG = YAML::Syck::Load <$fh>;
		1409	}
		1410
		1411	sub main {
		1412	# we must not ever block the main coroutine
		1413	local $Coro::idle = sub {
		1414	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1415	(Coro::unblock_sub {
		1416	Event::one_event;
		1417	})->();
		1418	};
		1419
		1420	cfg_load;
		1421	db_load;
		1422	load_extensions;
		1423	Event::loop;
		1424	}
		1425
		1426	#############################################################################
		1427	# initialisation
		1428
		1429	sub perl_reload() {
		1430	# can/must only be called in main
		1431	if ($Coro::current != $Coro::main) {
		1432	warn "can only reload from main coroutine\n";
		1433	return;
		1434	}
		1435
		1436	warn "reloading...";
		1437
		1438	local $FREEZE = 1;
		1439	cf::emergency_save;
		1440
		1441	eval {
		1442	# if anything goes wrong in here, we should simply crash as we already saved
		1443
		1444	# cancel all watchers
		1445	for (Event::all_watchers) {
		1446	$_->cancel if $_->data & WF_AUTOCANCEL;
		1447	}
		1448
		1449	# cancel all extension coros
		1450	$_->cancel for values %EXT_CORO;
		1451	%EXT_CORO = ();
		1452
		1453	# unload all extensions
		1454	for (@exts) {
		1455	warn "unloading <$_>";
		1456	unload_extension $_;
		1457	}
		1458
		1459	# unload all modules loaded from $LIBDIR
		1460	while (my ($k, $v) = each %INC) {
		1461	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1462
		1463	warn "removing <$k>";
		1464	delete $INC{$k};
		1465
		1466	$k =~ s/\.pm$//;
		1467	$k =~ s/\//::/g;
		1468
		1469	if (my $cb = $k->can ("unload_module")) {
		1470	$cb->();
		1471	}
		1472
		1473	Symbol::delete_package $k;
		1474	}
		1475
		1476	# sync database to disk
		1477	cf::db_sync;
		1478	IO::AIO::flush;
		1479
		1480	# get rid of safe::, as good as possible
		1481	Symbol::delete_package "safe::$_"
		1482	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1483
		1484	# remove register_script_function callbacks
		1485	# TODO
		1486
		1487	# unload cf.pm "a bit"
		1488	delete $INC{"cf.pm"};
		1489
		1490	# don't, removes xs symbols, too,
		1491	# and global variables created in xs
		1492	#Symbol::delete_package __PACKAGE__;
		1493
		1494	# reload cf.pm
		1495	warn "reloading cf.pm";
		1496	require cf;
		1497	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1498
		1499	# load config and database again
		1500	cf::cfg_load;
		1501	cf::db_load;
		1502
		1503	# load extensions
		1504	warn "load extensions";
		1505	cf::load_extensions;
		1506
		1507	# reattach attachments to objects
		1508	warn "reattach";
		1509	_global_reattach;
		1510	};
		1511
		1512	if ($@) {
		1513	warn $@;
		1514	warn "error while reloading, exiting.";
		1515	exit 1;
		1516	}
		1517
		1518	warn "reloaded successfully";
215	};	1519	};
216		1520
217	#############################################################################	1521	#############################################################################
218	# load/save/clean perl data associated with a map
219		1522
220	*on_mapclean = sub {	1523	unless ($LINK_MAP) {
221	my $map = shift->{map};	1524	$LINK_MAP = cf::map::new;
222		1525
223	my $path = $map->tmpname;	1526	$LINK_MAP->width (41);
224	defined $path or return;	1527	$LINK_MAP->height (41);
		1528	$LINK_MAP->alloc;
		1529	$LINK_MAP->path ("{link}");
		1530	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		1531	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1532	}
225		1533
226	unlink "$path.cfperl";	1534	register "<global>", __PACKAGE__;
		1535
		1536	register_command "perl-reload" => sub {
		1537	my ($who, $arg) = @_;
		1538
		1539	if ($who->flag (FLAG_WIZ)) {
		1540	$who->message ("start of reload.");
		1541	perl_reload;
		1542	$who->message ("end of reload.");
		1543	}
227	};	1544	};
228		1545
229	*on_mapin =	1546	unshift @INC, $LIBDIR;
230	*on_mapload = sub {
231	my $map = shift->{map};
232		1547
233	my $path = $map->tmpname;	1548	$TICK_WATCHER = Event->timer (
234	$path = $map->path unless defined $path;	1549	reentrant => 0,
235		1550	prio => 0,
236	open my $fh, "<:raw", "$path.cfperl"	1551	at => $NEXT_TICK || $TICK,
237	or return; # no perl data	1552	data => WF_AUTOCANCEL,
238		1553	cb => sub {
239	my $data = Storable::thaw do { local $/; <$fh> };	1554	unless ($FREEZE) {
240		1555	cf::server_tick; # one server iteration
241	$data->{version} <= 1	1556	$RUNTIME += $TICK;
242	or return; # too new
243
244	$map->_set_obs ($data->{obs});
245	};
246
247	*on_mapout = sub {
248	my $map = shift->{map};
249
250	my $path = $map->tmpname;
251	$path = $map->path unless defined $path;
252
253	my $obs = $map->_get_obs;
254
255	if (defined $obs) {
256	open my $fh, ">:raw", "$path.cfperl"
257	or die "$path.cfperl: $!";
258
259	stat $path;
260
261	print $fh Storable::nfreeze {
262	size => (stat _)[7],
263	time => (stat _)[9],
264	version => 1,
265	obs => $obs,
266	};	1557	}
267		1558
268	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*	1559	$NEXT_TICK += $TICK;
269	} else {	1560
270	unlink "$path.cfperl";	1561	# if we are delayed by four ticks or more, skip them all
		1562	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		1563
		1564	$TICK_WATCHER->at ($NEXT_TICK);
		1565	$TICK_WATCHER->start;
271	}	1566	},
272	};	1567	);
273		1568
274	#############################################################################	1569	IO::AIO::max_poll_time $TICK * 0.2;
275	# load/save perl data associated with player->ob objects
276		1570
277	*on_player_load = sub {	1571	Event->io (
278	my ($event) = @_;	1572	fd => IO::AIO::poll_fileno,
279	my $path = $event->{message};	1573	poll => 'r',
280	my $ob = $event->{who};	1574	prio => 5,
		1575	data => WF_AUTOCANCEL,
		1576	cb => \&IO::AIO::poll_cb,
		1577	);
281		1578
282	if (open my $fh, "<:raw", "$path.cfperl") {	1579	Event->timer (
283		1580	data => WF_AUTOCANCEL,
284	#d##TODO#remove	1581	after => 0,
285		1582	interval => 10,
286	my $data = Storable::thaw do { local $/; <$fh> };	1583	cb => sub {
287		1584	(Coro::unblock_sub {
288	$data->{version} <= 1	1585	write_runtime
289	or return; # too new	1586	or warn "ERROR: unable to write runtime file: $!";
290		1587	})->();
291	%$ob = %{$data->{ob}};
292	return;
293	}	1588	},
294		1589	);
295	for my $o ($ob, $ob->inv) {
296	if (my $value = $o->get_ob_key_value ("_perl_data")) {
297	$o->set_ob_key_value ("_perl_data");
298
299	%$o = %{ Storable::thaw pack "H*", $value };
300	}
301	}
302	};
303
304	*on_player_save = sub {
305	my ($event) = @_;
306	my $path = $event->{message};
307	my $ob = $event->{who};
308
309	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
310	for grep %$_, $ob, $ob->inv;
311
312	unlink "$path.cfperl";#d##TODO#remove
313	};
314
315	register "<global>", __PACKAGE__;
316
317	load_extensions;
318		1590
319	1	1591	1
320		1592

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