[ViewVC] Diff of: cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.30 by elmex, Sat Aug 12 11:51:37 2006 UTC vs.
Revision 1.141 by root, Fri Jan 5 20:08:53 2007 UTC

…		…
1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
10	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 Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
		24	use Time::HiRes;
		25
11	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
12		27
13	use strict;	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
14		30
15	our %COMMAND;	31	$Coro::main->prio (Coro::PRIO_MAX); # 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
16	our @EVENT;	39	our @EVENT;
17	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
18	our %PROP_IDX;	41
19	our $LIBDIR = maps_directory "perl";	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 $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME \|\| !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
		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
20		113
21	BEGIN {	114	BEGIN {
22	@EVENT = map lc, @EVENT;
23
24	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
25	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
26	$msg .= "\n"	119	$msg .= "\n"
27	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
28		121
29	print STDERR "cfperl: $msg";
30	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
31	};	123	};
32	}	124	}
33		125
34	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
35		132
36	# generate property mutators	133	# we bless all objects into (empty) derived classes to force a method lookup
37	sub prop_gen {	134	# within the Safe compartment.
38	my ($prefix, $class) = @_;	135	for my $pkg (qw(
39		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	)) {
40	no strict 'refs';	142	no strict 'refs';
41
42	for my $prop (keys %PROP_TYPE) {
43	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
44	my $sub = lc $1;
45
46	my $type = $PROP_TYPE{$prop};
47	my $idx = $PROP_IDX {$prop};
48
49	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
50	$_[0]->get_property ($type, $idx)
51	};
52
53	*{"$class\::set_$sub"} = sub {
54	$_[0]->set_property ($type, $idx, $_[1]);
55	} unless $ignore_set{$prop};
56	}
57	}
58
59	# auto-generate most of the API
60
61	prop_gen OBJECT_PROP => "cf::object";
62	# CFAPI_OBJECT_ANIMATION?
63	prop_gen PLAYER_PROP => "cf::object::player";
64
65	prop_gen MAP_PROP => "cf::map";
66	prop_gen ARCH_PROP => "cf::arch";
67
68	# guessed hierarchies
69
70	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
71	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
72
73	# we bless all objects into derived classes to force a method lookup
74	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
76	no strict 'refs';
77	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	144	}
79		145
80	$Event::DIED = sub {	146	$Event::DIED = sub {
81	warn "error in event callback: @_";	147	warn "error in event callback: @_";
82	};	148	};
83		149
84	my %ext_pkg;	150	my %ext_pkg;
85	my @exts;	151	my @exts;
86	my @hook;	152	my @hook;
87	my %command;
88	my %extcmd;
89		153
90	sub inject_event {	154	=head2 UTILITY FUNCTIONS
91	my $extension = shift;	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::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
		203	my ($key) = @_;
		204
		205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	sub freeze_mainloop {
		227	return unless $TICK_WATCHER->is_active;
		228
		229	my $guard = Coro::guard { $TICK_WATCHER->start };
		230	$TICK_WATCHER->stop;
		231	$guard
		232	}
		233
		234	=item cf::async { BLOCK }
		235
		236	Currently the same as Coro::async_pool, meaning you cannot use
		237	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		238	thing you are allowed to do is call C<prio> on it.
		239
		240	=cut
		241
		242	BEGIN { *async = \&Coro::async_pool }
		243
		244	=item cf::sync_job { BLOCK }
		245
		246	The design of crossfire+ requires that the main coro ($Coro::main) is
		247	always able to handle events or runnable, as crossfire+ is only partly
		248	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		249
		250	If it must be done, put the blocking parts into C<sync_job>. This will run
		251	the given BLOCK in another coroutine while waiting for the result. The
		252	server will be frozen during this time, so the block should either finish
		253	fast or be very important.
		254
		255	=cut
		256
		257	sub sync_job(&) {
		258	my ($job) = @_;
		259
		260	if ($Coro::current == $Coro::main) {
		261	# this is the main coro, too bad, we have to block
		262	# till the operation succeeds, freezing the server :/
		263
		264	# TODO: use suspend/resume instead
		265	# (but this is cancel-safe)
		266	my $freeze_guard = freeze_mainloop;
		267
		268	my $busy = 1;
		269	my @res;
		270
		271	(async {
		272	@res = eval { $job->() };
		273	warn $@ if $@;
		274	undef $busy;
		275	})->prio (Coro::PRIO_MAX);
		276
		277	while ($busy) {
		278	Coro::cede or Event::one_event;
		279	}
		280
		281	wantarray ? @res : $res[0]
		282	} else {
		283	# we are in another coroutine, how wonderful, everything just works
		284
		285	$job->()
		286	}
		287	}
		288
		289	=item $coro = cf::async_ext { BLOCK }
		290
		291	Like async, but this coro is automcatially being canceled when the
		292	extension calling this is being unloaded.
		293
		294	=cut
		295
		296	sub async_ext(&) {
92	my $event_code = shift;	297	my $cb = shift;
93		298
94	my $cb = $hook[$event_code]{$extension}	299	my $coro = &Coro::async ($cb);
		300
		301	$coro->on_destroy (sub {
		302	delete $EXT_CORO{$coro+0};
		303	});
		304	$EXT_CORO{$coro+0} = $coro;
		305
		306	$coro
		307	}
		308
		309	sub write_runtime {
		310	my $runtime = cf::localdir . "/runtime";
		311
		312	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
95	or return;	313	or return;
96		314
97	&$cb	315	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
98	}	316	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		317	and return;
99		318
100	sub inject_global_event {	319	aio_fsync $fh
		320	and return;
		321
		322	close $fh
		323	or return;
		324
		325	aio_rename "$runtime~", $runtime
		326	and return;
		327
		328	1
		329	}
		330
		331	=back
		332
		333	=cut
		334
		335	#############################################################################
		336
		337	package cf::path;
		338
		339	sub new {
		340	my ($class, $path, $base) = @_;
		341
		342	$path = $path->as_string if ref $path;
		343
		344	my $self = bless { }, $class;
		345
		346	# {... are special paths that are not touched
		347	# ?xxx/... are special absolute paths
		348	# ?random/... random maps
		349	# /! non-realised random map exit
		350	# /... normal maps
		351	# ~/... per-player maps without a specific player (DO NOT USE)
		352	# ~user/... per-player map of a specific user
		353
		354	if ($path =~ /^{/) {
		355	# fine as it is
		356	} elsif ($path =~ s{^\?random/}{}) {
		357	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		358	$self->{random} = cf::from_json $data;
		359	} else {
		360	if ($path =~ s{^~([^/]+)?}{}) {
		361	$self->{user_rel} = 1;
		362
		363	if (defined $1) {
		364	$self->{user} = $1;
		365	} elsif ($base =~ m{^~([^/]+)/}) {
		366	$self->{user} = $1;
		367	} else {
		368	warn "cannot resolve user-relative path without user <$path,$base>\n";
		369	}
		370	} elsif ($path =~ /^\//) {
		371	# already absolute
		372	} else {
		373	$base =~ s{[^/]+/?$}{};
		374	return $class->new ("$base/$path");
		375	}
		376
		377	for ($path) {
		378	redo if s{/\.?/}{/};
		379	redo if s{/[^/]+/\.\./}{/};
		380	}
		381	}
		382
		383	$self->{path} = $path;
		384
		385	$self
		386	}
		387
		388	# the name / primary key / in-game path
		389	sub as_string {
		390	my ($self) = @_;
		391
		392	$self->{user_rel} ? "~$self->{user}$self->{path}"
		393	: $self->{random} ? "?random/$self->{path}"
		394	: $self->{path}
		395	}
		396
		397	# the displayed name, this is a one way mapping
		398	sub visible_name {
		399	my ($self) = @_;
		400
		401	# if (my $rmp = $self->{random}) {
		402	# # todo: be more intelligent about this
		403	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		404	# } else {
		405	$self->as_string
		406	# }
		407	}
		408
		409	# escape the /'s in the path
		410	sub _escaped_path {
		411	# ∕ is U+2215
		412	(my $path = $_[0]{path}) =~ s/\//∕/g;
		413	$path
		414	}
		415
		416	# the original (read-only) location
		417	sub load_path {
		418	my ($self) = @_;
		419
		420	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		421	}
		422
		423	# the temporary/swap location
		424	sub save_path {
		425	my ($self) = @_;
		426
		427	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		428	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		429	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		430	}
		431
		432	# the unique path, might be eq to save_path
		433	sub uniq_path {
		434	my ($self) = @_;
		435
		436	$self->{user_rel} \|\| $self->{random}
		437	? undef
		438	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		439	}
		440
		441	# return random map parameters, or undef
		442	sub random_map_params {
		443	my ($self) = @_;
		444
		445	$self->{random}
		446	}
		447
		448	# this is somewhat ugly, but style maps do need special treatment
		449	sub is_style_map {
		450	$_[0]{path} =~ m{^/styles/}
		451	}
		452
		453	package cf;
		454
		455	#############################################################################
		456
		457	=head2 ATTACHABLE OBJECTS
		458
		459	Many objects in crossfire are so-called attachable objects. That means you can
		460	attach callbacks/event handlers (a collection of which is called an "attachment")
		461	to it. All such attachable objects support the following methods.
		462
		463	In the following description, CLASS can be any of C<global>, C<object>
		464	C<player>, C<client> or C<map> (i.e. the attachable objects in
		465	crossfire+).
		466
		467	=over 4
		468
		469	=item $attachable->attach ($attachment, key => $value...)
		470
		471	=item $attachable->detach ($attachment)
		472
		473	Attach/detach a pre-registered attachment to a specific object and give it
		474	the specified key/value pairs as arguments.
		475
		476	Example, attach a minesweeper attachment to the given object, making it a
		477	10x10 minesweeper game:
		478
		479	$obj->attach (minesweeper => width => 10, height => 10);
		480
		481	=item $bool = $attachable->attached ($name)
		482
		483	Checks wether the named attachment is currently attached to the object.
		484
		485	=item cf::CLASS->attach ...
		486
		487	=item cf::CLASS->detach ...
		488
		489	Define an anonymous attachment and attach it to all objects of the given
		490	CLASS. See the next function for an explanation of its arguments.
		491
		492	You can attach to global events by using the C<cf::global> class.
		493
		494	Example, log all player logins:
		495
		496	cf::player->attach (
		497	on_login => sub {
		498	my ($pl) = @_;
		499	...
		500	},
		501	);
		502
		503	Example, attach to the jeweler skill:
		504
		505	cf::object->attach (
		506	type => cf::SKILL,
		507	subtype => cf::SK_JEWELER,
		508	on_use_skill => sub {
		509	my ($sk, $ob, $part, $dir, $msg) = @_;
		510	...
		511	},
		512	);
		513
		514	=item cf::CLASS::attachment $name, ...
		515
		516	Register an attachment by C<$name> through which attachable objects of the
		517	given CLASS can refer to this attachment.
		518
		519	Some classes such as crossfire maps and objects can specify attachments
		520	that are attached at load/instantiate time, thus the need for a name.
		521
		522	These calls expect any number of the following handler/hook descriptions:
		523
		524	=over 4
		525
		526	=item prio => $number
		527
		528	Set the priority for all following handlers/hooks (unless overwritten
		529	by another C<prio> setting). Lower priority handlers get executed
		530	earlier. The default priority is C<0>, and many built-in handlers are
		531	registered at priority C<-1000>, so lower priorities should not be used
		532	unless you know what you are doing.
		533
		534	=item type => $type
		535
		536	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		537	given type of objects only (the additional parameter C<subtype> can be
		538	used to further limit to the given subtype).
		539
		540	=item on_I<event> => \&cb
		541
		542	Call the given code reference whenever the named event happens (event is
		543	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		544	handlers are recognised generally depends on the type of object these
		545	handlers attach to).
		546
		547	See F<include/eventinc.h> for the full list of events supported, and their
		548	class.
		549
		550	=item package => package::
		551
		552	Look for sub functions of the name C<< on_I<event> >> in the given
		553	package and register them. Only handlers for eevents supported by the
		554	object/class are recognised.
		555
		556	=back
		557
		558	Example, define an attachment called "sockpuppet" that calls the given
		559	event handler when a monster attacks:
		560
		561	cf::object::attachment sockpuppet =>
		562	on_skill_attack => sub {
		563	my ($self, $victim) = @_;
		564	...
		565	}
		566	}
		567
		568	=item $attachable->valid
		569
		570	Just because you have a perl object does not mean that the corresponding
		571	C-level object still exists. If you try to access an object that has no
		572	valid C counterpart anymore you get an exception at runtime. This method
		573	can be used to test for existence of the C object part without causing an
		574	exception.
		575
		576	=cut
		577
		578	# the following variables are defined in .xs and must not be re-created
		579	our @CB_GLOBAL = (); # registry for all global events
		580	our @CB_ATTACHABLE = (); # registry for all attachables
		581	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		582	our @CB_PLAYER = ();
		583	our @CB_CLIENT = ();
		584	our @CB_TYPE = (); # registry for type (cf-object class) based events
		585	our @CB_MAP = ();
		586
		587	my %attachment;
		588
		589	sub _attach_cb($$$$) {
		590	my ($registry, $event, $prio, $cb) = @_;
		591
		592	use sort 'stable';
		593
		594	$cb = [$prio, $cb];
		595
		596	@{$registry->[$event]} = sort
		597	{ $a->[0] cmp $b->[0] }
		598	@{$registry->[$event] \|\| []}, $cb;
		599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		603
		604	# attach handles attaching event callbacks
		605	# the only thing the caller has to do is pass the correct
		606	# registry (== where the callback attaches to).
		607	sub _attach {
		608	my ($registry, $klass, @arg) = @_;
		609
		610	my $object_type;
		611	my $prio = 0;
		612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
		619	while (@arg) {
		620	my $type = shift @arg;
		621
		622	if ($type eq "prio") {
		623	$prio = shift @arg;
		624
		625	} elsif ($type eq "type") {
		626	$object_type = shift @arg;
		627	$registry = $CB_TYPE[$object_type] \|\|= [];
		628
		629	} elsif ($type eq "subtype") {
		630	defined $object_type or Carp::croak "subtype specified without type";
		631	my $object_subtype = shift @arg;
		632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] \|\|= [];
		633
		634	} elsif ($type eq "package") {
		635	my $pkg = shift @arg;
		636
		637	while (my ($name, $id) = each %cb_id) {
		638	if (my $cb = $pkg->can ($name)) {
		639	_attach_cb $registry, $id, $prio, $cb;
		640	}
		641	}
		642
		643	} elsif (exists $cb_id{$type}) {
		644	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		645
		646	} elsif (ref $type) {
		647	warn "attaching objects not supported, ignoring.\n";
		648
		649	} else {
		650	shift @arg;
		651	warn "attach argument '$type' not supported, ignoring.\n";
		652	}
		653	}
		654	}
		655
		656	sub _object_attach {
		657	my ($obj, $name, %arg) = @_;
		658
		659	return if exists $obj->{_attachment}{$name};
		660
		661	if (my $attach = $attachment{$name}) {
		662	my $registry = $obj->registry;
		663
		664	for (@$attach) {
		665	my ($klass, @attach) = @$_;
		666	_attach $registry, $klass, @attach;
		667	}
		668
		669	$obj->{$name} = \%arg;
		670	} else {
		671	warn "object uses attachment '$name' that is not available, postponing.\n";
		672	}
		673
		674	$obj->{_attachment}{$name} = undef;
		675	}
		676
		677	sub cf::attachable::attach {
		678	if (ref $_[0]) {
		679	_object_attach @_;
		680	} else {
		681	_attach shift->_attach_registry, @_;
		682	}
		683	};
		684
		685	# all those should be optimised
		686	sub cf::attachable::detach {
		687	my ($obj, $name) = @_;
		688
		689	if (ref $obj) {
		690	delete $obj->{_attachment}{$name};
		691	reattach ($obj);
		692	} else {
		693	Carp::croak "cannot, currently, detach class attachments";
		694	}
		695	};
		696
		697	sub cf::attachable::attached {
		698	my ($obj, $name) = @_;
		699
		700	exists $obj->{_attachment}{$name}
		701	}
		702
		703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		704	eval "#line " . __LINE__ . " 'cf.pm'
		705	sub cf::\L$klass\E::_attach_registry {
		706	(\\\@CB_$klass, KLASS_$klass)
		707	}
		708
		709	sub cf::\L$klass\E::attachment {
		710	my \$name = shift;
		711
		712	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		713	}
		714	";
		715	die if $@;
		716	}
		717
		718	our $override;
		719	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		720
		721	sub override {
		722	$override = 1;
		723	@invoke_results = ();
		724	}
		725
		726	sub do_invoke {
101	my $event = shift;	727	my $event = shift;
		728	my $callbacks = shift;
102		729
103	my $cb = $hook[$event]	730	@invoke_results = ();
		731
		732	local $override;
		733
		734	for (@$callbacks) {
		735	eval { &{$_->[1]} };
		736
		737	if ($@) {
		738	warn "$@";
		739	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		740	override;
		741	}
		742
		743	return 1 if $override;
		744	}
		745
		746	0
		747	}
		748
		749	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		750
		751	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		752
		753	Generate an object-specific event with the given arguments.
		754
		755	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		756	removed in future versions), and there is no public API to access override
		757	results (if you must, access C<@cf::invoke_results> directly).
		758
		759	=back
		760
		761	=cut
		762
		763	#############################################################################
		764	# object support
		765
		766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
		768	my ($obj) = @_;
		769
		770	my $registry = $obj->registry;
		771
		772	@$registry = ();
		773
		774	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		775
		776	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
		777	if (my $attach = $attachment{$name}) {
		778	for (@$attach) {
		779	my ($klass, @attach) = @$_;
		780	_attach $registry, $klass, @attach;
		781	}
		782	} else {
		783	warn "object uses attachment '$name' that is not available, postponing.\n";
		784	}
		785	}
		786	}
		787
		788	cf::attachable->attach (
		789	prio => -1000000,
		790	on_instantiate => sub {
		791	my ($obj, $data) = @_;
		792
		793	$data = from_json $data;
		794
		795	for (@$data) {
		796	my ($name, $args) = @$_;
		797
		798	$obj->attach ($name, %{$args \|\| {} });
		799	}
		800	},
		801	on_reattach => \&reattach,
		802	on_clone => sub {
		803	my ($src, $dst) = @_;
		804
		805	@{$dst->registry} = @{$src->registry};
		806
		807	%$dst = %$src;
		808
		809	%{$dst->{_attachment}} = %{$src->{_attachment}}
		810	if exists $src->{_attachment};
		811	},
		812	);
		813
		814	sub object_freezer_save {
		815	my ($filename, $rdata, $objs) = @_;
		816
		817	sync_job {
		818	if (length $$rdata) {
		819	warn sprintf "saving %s (%d,%d)\n",
		820	$filename, length $$rdata, scalar @$objs;
		821
		822	if (my $fh = aio_open "$filename~", O_WRONLY \| O_CREAT, 0600) {
		823	chmod SAVE_MODE, $fh;
		824	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		825	aio_fsync $fh;
		826	close $fh;
		827
		828	if (@$objs) {
		829	if (my $fh = aio_open "$filename.pst~", O_WRONLY \| O_CREAT, 0600) {
		830	chmod SAVE_MODE, $fh;
		831	my $data = Storable::nfreeze { version => 1, objs => $objs };
		832	aio_write $fh, 0, (length $data), $data, 0;
		833	aio_fsync $fh;
		834	close $fh;
		835	aio_rename "$filename.pst~", "$filename.pst";
		836	}
		837	} else {
		838	aio_unlink "$filename.pst";
		839	}
		840
		841	aio_rename "$filename~", $filename;
		842	} else {
		843	warn "FATAL: $filename~: $!\n";
		844	}
		845	} else {
		846	aio_unlink $filename;
		847	aio_unlink "$filename.pst";
		848	}
		849	}
		850	}
		851
		852	sub object_freezer_as_string {
		853	my ($rdata, $objs) = @_;
		854
		855	use Data::Dumper;
		856
		857	$$rdata . Dumper $objs
		858	}
		859
		860	sub object_thawer_load {
		861	my ($filename) = @_;
		862
		863	my ($data, $av);
		864
		865	(aio_load $filename, $data) >= 0
104	or return;	866	or return;
105		867
106	List::Util::max map &$_, values %$cb	868	unless (aio_stat "$filename.pst") {
107	}	869	(aio_load "$filename.pst", $av) >= 0
108		870	or return;
109	sub inject_command {	871	$av = eval { (Storable::thaw $av)->{objs} };
110	my ($name, $obj, $params) = @_;
111
112	for my $cmd (@{ $command{$name} }) {
113	$cmd->[1]->($obj, $params);
114	}	872	}
115		873
116	-1	874	warn sprintf "loading %s (%d)\n",
		875	$filename, length $data, scalar @{$av \|\| []};#d#
		876	return ($data, $av);
117	}	877	}
		878
		879	#############################################################################
		880	# command handling &c
		881
		882	=item cf::register_command $name => \&callback($ob,$args);
		883
		884	Register a callback for execution when the client sends the user command
		885	$name.
		886
		887	=cut
118		888
119	sub register_command {	889	sub register_command {
120	my ($name, $time, $cb) = @_;	890	my ($name, $cb) = @_;
121		891
122	my $caller = caller;	892	my $caller = caller;
123	#warn "registering command '$name/$time' to '$caller'";	893	#warn "registering command '$name/$time' to '$caller'";
124		894
125	push @{ $command{$name} }, [$time, $cb, $caller];	895	push @{ $COMMAND{$name} }, [$caller, $cb];
126	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
127	}	896	}
		897
		898	=item cf::register_extcmd $name => \&callback($pl,$packet);
		899
		900	Register a callbackf ro execution when the client sends an extcmd packet.
		901
		902	If the callback returns something, it is sent back as if reply was being
		903	called.
		904
		905	=cut
128		906
129	sub register_extcmd {	907	sub register_extcmd {
130	my ($name, $cb) = @_;	908	my ($name, $cb) = @_;
131		909
132	my $caller = caller;	910	my $caller = caller;
133	#warn "registering extcmd '$name' to '$caller'";	911	#warn "registering extcmd '$name' to '$caller'";
134		912
135	$extcmd{$name} = [$cb, $caller];	913	$EXTCMD{$name} = [$cb, $caller];
136	}	914	}
		915
		916	cf::player->attach (
		917	on_command => sub {
		918	my ($pl, $name, $params) = @_;
		919
		920	my $cb = $COMMAND{$name}
		921	or return;
		922
		923	for my $cmd (@$cb) {
		924	$cmd->[1]->($pl->ob, $params);
		925	}
		926
		927	cf::override;
		928	},
		929	on_extcmd => sub {
		930	my ($pl, $buf) = @_;
		931
		932	my $msg = eval { from_json $buf };
		933
		934	if (ref $msg) {
		935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		936	if (my %reply = $cb->[0]->($pl, $msg)) {
		937	$pl->ext_reply ($msg->{msgid}, %reply);
		938	}
		939	}
		940	} else {
		941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		942	}
		943
		944	cf::override;
		945	},
		946	);
137		947
138	sub register {	948	sub register {
139	my ($base, $pkg) = @_;	949	my ($base, $pkg) = @_;
140		950
141	for my $idx (0 .. $#EVENT) {	951	#TODO
142	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
143	#warn "registering $EVENT[$idx] hook to '$pkg'\n";
144	$hook[$idx]{$base} = $ref;
145	}
146	}
147	}	952	}
148		953
149	sub load_extension {	954	sub load_extension {
150	my ($path) = @_;	955	my ($path) = @_;
151		956
152	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	957	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
153	my $base = $1;	958	my $base = $1;
154	my $pkg = $1;	959	my $pkg = $1;
155	$pkg =~ s/[^[:word:]]/_/g;	960	$pkg =~ s/[^[:word:]]/_/g;
156	$pkg = "cf::ext::$pkg";	961	$pkg = "ext::$pkg";
157		962
158	warn "loading '$path' into '$pkg'\n";	963	warn "loading '$path' into '$pkg'\n";
159		964
160	open my $fh, "<:utf8", $path	965	open my $fh, "<:utf8", $path
161	or die "$path: $!";	966	or die "$path: $!";
165	. "#line 1 \"$path\"\n{\n"	970	. "#line 1 \"$path\"\n{\n"
166	. (do { local $/; <$fh> })	971	. (do { local $/; <$fh> })
167	. "\n};\n1";	972	. "\n};\n1";
168		973
169	eval $source	974	eval $source
170	or die "$path: $@";	975	or die $@ ? "$path: $@\n"
		976	: "extension disabled.\n";
171		977
172	push @exts, $pkg;	978	push @exts, $pkg;
173	$ext_pkg{$base} = $pkg;	979	$ext_pkg{$base} = $pkg;
174		980
175	# no strict 'refs';	981	# no strict 'refs';
…		…
181	sub unload_extension {	987	sub unload_extension {
182	my ($pkg) = @_;	988	my ($pkg) = @_;
183		989
184	warn "removing extension $pkg\n";	990	warn "removing extension $pkg\n";
185		991
186	if (my $cb = $pkg->can ("on_unload")) {
187	$cb->($pkg);
188	}
189
190	# remove hooks	992	# remove hooks
		993	#TODO
191	for my $idx (0 .. $#EVENT) {	994	# for my $idx (0 .. $#PLUGIN_EVENT) {
192	delete $hook[$idx]{$pkg};	995	# delete $hook[$idx]{$pkg};
193	}	996	# }
194		997
195	# remove commands	998	# remove commands
196	for my $name (keys %command) {	999	for my $name (keys %COMMAND) {
197	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1000	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
198		1001
199	if (@cb) {	1002	if (@cb) {
200	$command{$name} = \@cb;	1003	$COMMAND{$name} = \@cb;
201	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
202	} else {	1004	} else {
203	delete $command{$name};
204	delete $COMMAND{"$name\000"};	1005	delete $COMMAND{$name};
205	}	1006	}
206	}	1007	}
207		1008
208	# remove extcmds	1009	# remove extcmds
209	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1010	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
210	delete $extcmd{$name};	1011	delete $EXTCMD{$name};
		1012	}
		1013
		1014	if (my $cb = $pkg->can ("unload")) {
		1015	eval {
		1016	$cb->($pkg);
		1017	1
		1018	} or warn "$pkg unloaded, but with errors: $@";
211	}	1019	}
212		1020
213	Symbol::delete_package $pkg;	1021	Symbol::delete_package $pkg;
214	}	1022	}
215		1023
216	sub load_extensions {	1024	sub load_extensions {
217	my $LIBDIR = maps_directory "perl";
218
219	for my $ext (<$LIBDIR/*.ext>) {	1025	for my $ext (<$LIBDIR/*.ext>) {
220	next unless -r $ext;	1026	next unless -r $ext;
221	eval {	1027	eval {
222	load_extension $ext;	1028	load_extension $ext;
223	1	1029	1
224	} or warn "$ext not loaded: $@";	1030	} or warn "$ext not loaded: $@";
225	}	1031	}
226	}	1032	}
227		1033
228	register_command "perl-reload", 0, sub {
229	my ($who, $arg) = @_;
230
231	if ($who->flag (FLAG_WIZ)) {
232	$who->message ("reloading...");
233
234	warn "reloading...\n";
235	eval {
236	# 1. cancel all watchers
237	$_->cancel for Event::all_watchers;
238
239	# 2. unload all extensions
240	for (@exts) {
241	$who->message ("unloading <$_>");
242	unload_extension $_;
243	}
244
245	# 3. unload all modules loaded from $LIBDIR
246	while (my ($k, $v) = each %INC) {
247	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
248
249	$who->message ("removing <$k>");
250	delete $INC{$k};
251
252	$k =~ s/\.pm$//;
253	$k =~ s/\//::/g;
254
255	if (my $cb = $k->can ("unload_module")) {
256	$cb->();
257	}
258
259	Symbol::delete_package $k;
260	}
261
262	# 4. get rid of ext::, as good as possible
263	Symbol::delete_package "ext::$_"
264	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
265
266	# 5. remove register_script_function callbacks
267	# TODO
268
269	# 6. unload cf.pm "a bit"
270	delete $INC{"cf.pm"};
271
272	# don't, removes xs symbols, too
273	#Symbol::delete_package __PACKAGE__;
274
275	# 7. reload cf.pm
276	$who->message ("reloading cf.pm");
277	require cf;
278	};
279	warn $@ if $@;
280	$who->message ($@) if $@;
281	warn "reloaded\n";
282
283	$who->message ("reloaded");
284	} else {
285	$who->message ("Intruder Alert!");
286	}
287	};
288
289	#############################################################################
290	# utility functions
291
292	use JSON::Syck (); # TODO# replace by JSON::PC once working
293
294	sub from_json($) {
295	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
296	JSON::Syck::Load $_[0]
297	}
298
299	sub to_json($) {
300	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
301	JSON::Syck::Dump $_[0]
302	}
303
304	#############################################################################
305	# extcmd framework, basically convert ext <msg>
306	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
307
308	sub on_extcmd {
309	my ($pl, $buf) = @_;
310
311	my $msg = eval { from_json $buf };
312
313	if (ref $msg) {
314	if (my $cb = $extcmd{$msg->{msgtype}}) {
315	if (my %reply = $cb->[0]->($pl, $msg)) {
316	$pl->ext_reply ($msg->{msgid}, %reply);
317	}
318	}
319	} else {
320	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
321	}
322
323	1
324	}
325
326	#############################################################################	1034	#############################################################################
327	# load/save/clean perl data associated with a map	1035	# load/save/clean perl data associated with a map
328		1036
329	*on_mapclean = sub {	1037	*cf::mapsupport::on_clean = sub {
330	my ($map) = @_;	1038	my ($map) = @_;
331		1039
332	my $path = $map->tmpname;	1040	my $path = $map->tmpname;
333	defined $path or return;	1041	defined $path or return;
334		1042
335	unlink "$path.cfperl";	1043	unlink "$path.pst";
336	};	1044	};
337		1045
338	*on_mapin =	1046	cf::map->attach (prio => -10000, package => cf::mapsupport::);
339	*on_mapload = sub {
340	my ($map) = @_;
341
342	my $path = $map->tmpname;
343	$path = $map->path unless defined $path;
344
345	open my $fh, "<:raw", "$path.cfperl"
346	or return; # no perl data
347
348	my $data = Storable::thaw do { local $/; <$fh> };
349
350	$data->{version} <= 1
351	or return; # too new
352
353	$map->_set_obs ($data->{obs});
354	};
355
356	*on_mapout = sub {
357	my ($map) = @_;
358
359	my $path = $map->tmpname;
360	$path = $map->path unless defined $path;
361
362	my $obs = $map->_get_obs;
363
364	if (defined $obs) {
365	open my $fh, ">:raw", "$path.cfperl"
366	or die "$path.cfperl: $!";
367
368	stat $path;
369
370	print $fh Storable::nfreeze {
371	size => (stat _)[7],
372	time => (stat _)[9],
373	version => 1,
374	obs => $obs,
375	};
376
377	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
378	} else {
379	unlink "$path.cfperl";
380	}
381	};
382		1047
383	#############################################################################	1048	#############################################################################
384	# load/save perl data associated with player->ob objects	1049	# load/save perl data associated with player->ob objects
385		1050
386	*on_player_load = sub {	1051	sub all_objects(@) {
		1052	@_, map all_objects ($_->inv), @_
		1053	}
		1054
		1055	# TODO: compatibility cruft, remove when no longer needed
		1056	cf::player->attach (
		1057	on_load => sub {
387	my ($ob, $path) = @_;	1058	my ($pl, $path) = @_;
388		1059
389	for my $o ($ob, $ob->inv) {	1060	for my $o (all_objects $pl->ob) {
390	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1061	if (my $value = $o->get_ob_key_value ("_perl_data")) {
391	$o->set_ob_key_value ("_perl_data");	1062	$o->set_ob_key_value ("_perl_data");
392		1063
393	%$o = %{ Storable::thaw pack "H*", $value };	1064	%$o = %{ Storable::thaw pack "H*", $value };
394	}	1065	}
		1066	}
395	}	1067	},
396	};	1068	);
397
398	*on_player_save = sub {
399	my ($ob, $path) = @_;
400
401	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
402	for grep %$_, $ob, $ob->inv;
403	};
404		1069
405	#############################################################################	1070	#############################################################################
406	# core extensions - in perl	1071
		1072	=head2 CORE EXTENSIONS
		1073
		1074	Functions and methods that extend core crossfire objects.
		1075
		1076	=head3 cf::player
		1077
		1078	=over 4
407		1079
408	=item cf::player::exists $login	1080	=item cf::player::exists $login
409		1081
410	Returns true when the given account exists.	1082	Returns true when the given account exists.
411		1083
…		…
414	sub cf::player::exists($) {	1086	sub cf::player::exists($) {
415	cf::player::find $_[0]	1087	cf::player::find $_[0]
416	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1088	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
417	}	1089	}
418		1090
		1091	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1092
		1093	Sends an ext reply to the player.
		1094
		1095	=cut
		1096
		1097	sub cf::player::ext_reply($$$%) {
		1098	my ($self, $id, %msg) = @_;
		1099
		1100	$msg{msgid} = $id;
		1101
		1102	$self->send ("ext " . to_json \%msg);
		1103	}
		1104
		1105	=back
		1106
		1107
		1108	=head3 cf::map
		1109
		1110	=over 4
		1111
		1112	=cut
		1113
		1114	package cf::map;
		1115
		1116	use Fcntl;
		1117	use Coro::AIO;
		1118
		1119	our $MAX_RESET = 3600;
		1120	our $DEFAULT_RESET = 3000;
		1121
		1122	sub generate_random_map {
		1123	my ($path, $rmp) = @_;
		1124
		1125	# mit "rum" bekleckern, nicht
		1126	cf::map::_create_random_map
		1127	$path,
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region})
		1139	}
		1140
		1141	# and all this just because we cannot iterate over
		1142	# all maps in C++...
		1143	sub change_all_map_light {
		1144	my ($change) = @_;
		1145
		1146	$_->change_map_light ($change)
		1147	for grep $_->outdoor, values %cf::MAP;
		1148	}
		1149
		1150	sub try_load_header($) {
		1151	my ($path) = @_;
		1152
		1153	utf8::encode $path;
		1154	aio_open $path, O_RDONLY, 0
		1155	or return;
		1156
		1157	my $map = cf::map::new
		1158	or return;
		1159
		1160	# for better error messages only, will be overwritten
		1161	$map->path ($path);
		1162
		1163	$map->load_header ($path)
		1164	or return;
		1165
		1166	$map->{load_path} = $path;
		1167
		1168	$map
		1169	}
		1170
		1171	sub find;
		1172	sub find {
		1173	my ($path, $origin) = @_;
		1174
		1175	#warn "find<$path,$origin>\n";#d#
		1176
		1177	$path = new cf::path $path, $origin && $origin->path;
		1178	my $key = $path->as_string;
		1179
		1180	cf::lock_wait "map_find:$key";
		1181
		1182	$cf::MAP{$key} \|\| do {
		1183	my $guard = cf::lock_acquire "map_find:$key";
		1184
		1185	# do it the slow way
		1186	my $map = try_load_header $path->save_path;
		1187
		1188	Coro::cede;
		1189
		1190	if ($map) {
		1191	$map->last_access ((delete $map->{last_access})
		1192	\|\| $cf::RUNTIME); #d#
		1193	# safety
		1194	$map->{instantiate_time} = $cf::RUNTIME
		1195	if $map->{instantiate_time} > $cf::RUNTIME;
		1196	} else {
		1197	if (my $rmp = $path->random_map_params) {
		1198	$map = generate_random_map $key, $rmp;
		1199	} else {
		1200	$map = try_load_header $path->load_path;
		1201	}
		1202
		1203	$map or return;
		1204
		1205	$map->{load_original} = 1;
		1206	$map->{instantiate_time} = $cf::RUNTIME;
		1207	$map->last_access ($cf::RUNTIME);
		1208	$map->instantiate;
		1209
		1210	# per-player maps become, after loading, normal maps
		1211	$map->per_player (0) if $path->{user_rel};
		1212	}
		1213
		1214	$map->path ($key);
		1215	$map->{path} = $path;
		1216	$map->{last_save} = $cf::RUNTIME;
		1217
		1218	Coro::cede;
		1219
		1220	if ($map->should_reset) {
		1221	$map->reset;
		1222	undef $guard;
		1223	$map = find $path
		1224	or return;
		1225	}
		1226
		1227	$cf::MAP{$key} = $map
		1228	}
		1229	}
		1230
		1231	sub load {
		1232	my ($self) = @_;
		1233
		1234	my $path = $self->{path};
		1235	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1236
		1237	return if $self->in_memory != cf::MAP_SWAPPED;
		1238
		1239	$self->in_memory (cf::MAP_LOADING);
		1240
		1241	$self->alloc;
		1242	$self->load_objects ($self->{load_path}, 1)
		1243	or return;
		1244
		1245	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1246	if delete $self->{load_original};
		1247
		1248	if (my $uniq = $path->uniq_path) {
		1249	utf8::encode $uniq;
		1250	if (aio_open $uniq, O_RDONLY, 0) {
		1251	$self->clear_unique_items;
		1252	$self->load_objects ($uniq, 0);
		1253	}
		1254	}
		1255
		1256	Coro::cede;
		1257
		1258	# now do the right thing for maps
		1259	$self->link_multipart_objects;
		1260
		1261	if ($self->{path}->is_style_map) {
		1262	$self->{deny_save} = 1;
		1263	$self->{deny_reset} = 1;
		1264	} else {
		1265	$self->fix_auto_apply;
		1266	$self->decay_objects;
		1267	$self->update_buttons;
		1268	$self->set_darkness_map;
		1269	$self->difficulty ($self->estimate_difficulty)
		1270	unless $self->difficulty;
		1271	$self->activate;
		1272	}
		1273
		1274	Coro::cede;
		1275
		1276	$self->in_memory (cf::MAP_IN_MEMORY);
		1277	}
		1278
		1279	sub find_sync {
		1280	my ($path, $origin) = @_;
		1281
		1282	cf::sync_job { cf::map::find $path, $origin }
		1283	}
		1284
		1285	sub do_load_sync {
		1286	my ($map) = @_;
		1287
		1288	cf::sync_job { $map->load };
		1289	}
		1290
		1291	sub save {
		1292	my ($self) = @_;
		1293
		1294	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1295
		1296	$self->{last_save} = $cf::RUNTIME;
		1297
		1298	return unless $self->dirty;
		1299
		1300	my $save = $self->{path}->save_path; utf8::encode $save;
		1301	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1302
		1303	$self->{load_path} = $save;
		1304
		1305	return if $self->{deny_save};
		1306
		1307	local $self->{last_access} = $self->last_access;#d#
		1308
		1309	if ($uniq) {
		1310	$self->save_objects ($save, cf::IO_HEADER \| cf::IO_OBJECTS);
		1311	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1312	} else {
		1313	$self->save_objects ($save, cf::IO_HEADER \| cf::IO_OBJECTS \| cf::IO_UNIQUES);
		1314	}
		1315	}
		1316
		1317	sub swap_out {
		1318	my ($self) = @_;
		1319
		1320	# save first because save cedes
		1321	$self->save;
		1322
		1323	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1324
		1325	return if $self->players;
		1326	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1327	return if $self->{deny_save};
		1328
		1329	$self->clear;
		1330	$self->in_memory (cf::MAP_SWAPPED);
		1331	}
		1332
		1333	sub reset_at {
		1334	my ($self) = @_;
		1335
		1336	# TODO: safety, remove and allow resettable per-player maps
		1337	return 1e99 if $self->{path}{user_rel};
		1338	return 1e99 if $self->{deny_reset};
		1339
		1340	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1341	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;
		1342
		1343	$time + $to
		1344	}
		1345
		1346	sub should_reset {
		1347	my ($self) = @_;
		1348
		1349	$self->reset_at <= $cf::RUNTIME
		1350	}
		1351
		1352	sub unlink_save {
		1353	my ($self) = @_;
		1354
		1355	utf8::encode (my $save = $self->{path}->save_path);
		1356	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1357	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1358	}
		1359
		1360	sub rename {
		1361	my ($self, $new_path) = @_;
		1362
		1363	$self->unlink_save;
		1364
		1365	delete $cf::MAP{$self->path};
		1366	$self->{path} = new cf::path $new_path;
		1367	$self->path ($self->{path}->as_string);
		1368	$cf::MAP{$self->path} = $self;
		1369
		1370	$self->save;
		1371	}
		1372
		1373	sub reset {
		1374	my ($self) = @_;
		1375
		1376	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1377
		1378	return if $self->players;
		1379	return if $self->{path}{user_rel};#d#
		1380
		1381	warn "resetting map ", $self->path;#d#
		1382
		1383	delete $cf::MAP{$self->path};
		1384
		1385	$_->clear_links_to ($self) for values %cf::MAP;
		1386
		1387	$self->unlink_save;
		1388	$self->destroy;
		1389	}
		1390
		1391	my $nuke_counter = "aaaa";
		1392
		1393	sub nuke {
		1394	my ($self) = @_;
		1395
		1396	$self->{deny_save} = 1;
		1397	$self->reset_timeout (1);
		1398	$self->rename ("{nuke}/" . ($nuke_counter++));
		1399	$self->reset; # polite request, might not happen
		1400	}
		1401
		1402	sub customise_for {
		1403	my ($map, $ob) = @_;
		1404
		1405	if ($map->per_player) {
		1406	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1407	}
		1408
		1409	$map
		1410	}
		1411
		1412	sub emergency_save {
		1413	my $freeze_guard = cf::freeze_mainloop;
		1414
		1415	warn "enter emergency map save\n";
		1416
		1417	cf::sync_job {
		1418	warn "begin emergency map save\n";
		1419	$_->save for values %cf::MAP;
		1420	};
		1421
		1422	warn "end emergency map save\n";
		1423	}
		1424
		1425	package cf;
		1426
		1427	=back
		1428
		1429
		1430	=head3 cf::object::player
		1431
		1432	=over 4
		1433
419	=item $player->reply ($npc, $msg[, $flags])	1434	=item $player_object->reply ($npc, $msg[, $flags])
420		1435
421	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1436	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
422	can be C<undef>. Does the right thing when the player is currently in a	1437	can be C<undef>. Does the right thing when the player is currently in a
423	dialogue with the given NPC character.	1438	dialogue with the given NPC character.
424		1439
425	=cut	1440	=cut
426		1441
427	# rough implementation of a future "reply" method that works	1442	# rough implementation of a future "reply" method that works
428	# with dialog boxes.	1443	# with dialog boxes.
		1444	#TODO: the first argument must go, split into a $npc->reply_to ( method
429	sub cf::object::player::reply($$$;$) {	1445	sub cf::object::player::reply($$$;$) {
430	my ($self, $npc, $msg, $flags) = @_;	1446	my ($self, $npc, $msg, $flags) = @_;
431		1447
432	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	1448	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
433		1449
…		…
437	$msg = $npc->name . " says: $msg" if $npc;	1453	$msg = $npc->name . " says: $msg" if $npc;
438	$self->message ($msg, $flags);	1454	$self->message ($msg, $flags);
439	}	1455	}
440	}	1456	}
441		1457
442	=item $player->ext_reply ($msgid, $msgtype, %msg)	1458	=item $player_object->may ("access")
443		1459
444	Sends an ext reply to the player.	1460	Returns wether the given player is authorized to access resource "access"
		1461	(e.g. "command_wizcast").
445		1462
446	=cut	1463	=cut
447		1464
448	sub cf::player::ext_reply($$$%) {	1465	sub cf::object::player::may {
		1466	my ($self, $access) = @_;
		1467
		1468	$self->flag (cf::FLAG_WIZ) \|\|
		1469	(ref $cf::CFG{"may_$access"}
		1470	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1471	: $cf::CFG{"may_$access"})
		1472	}
		1473
		1474	=item $player_object->enter_link
		1475
		1476	Freezes the player and moves him/her to a special map (C<{link}>).
		1477
		1478	The player should be reaosnably safe there for short amounts of time. You
		1479	I<MUST> call C<leave_link> as soon as possible, though.
		1480
		1481	=item $player_object->leave_link ($map, $x, $y)
		1482
		1483	Moves the player out of the specila link map onto the given map. If the
		1484	map is not valid (or omitted), the player will be moved back to the
		1485	location he/she was before the call to C<enter_link>, or, if that fails,
		1486	to the emergency map position.
		1487
		1488	Might block.
		1489
		1490	=cut
		1491
		1492	sub cf::object::player::enter_link {
		1493	my ($self) = @_;
		1494
		1495	$self->deactivate_recursive;
		1496
		1497	return if $self->map == $LINK_MAP;
		1498
		1499	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]
		1500	if $self->map;
		1501
		1502	$self->enter_map ($LINK_MAP, 20, 20);
		1503	}
		1504
		1505	sub cf::object::player::leave_link {
		1506	my ($self, $map, $x, $y) = @_;
		1507
		1508	my $link_pos = delete $self->{_link_pos};
		1509
		1510	unless ($map) {
		1511	# restore original map position
		1512	($map, $x, $y) = @{ $link_pos \|\| [] };
		1513	$map = cf::map::find $map;
		1514
		1515	unless ($map) {
		1516	($map, $x, $y) = @$EMERGENCY_POSITION;
		1517	$map = cf::map::find $map
		1518	or die "FATAL: cannot load emergency map\n";
		1519	}
		1520	}
		1521
		1522	($x, $y) = (-1, -1)
		1523	unless (defined $x) && (defined $y);
		1524
		1525	# use -1 or undef as default coordinates, not 0, 0
		1526	($x, $y) = ($map->enter_x, $map->enter_y)
		1527	if $x <=0 && $y <= 0;
		1528
		1529	$map->load;
		1530
		1531	$self->activate_recursive;
		1532	$self->enter_map ($map, $x, $y);
		1533	}
		1534
		1535	cf::player->attach (
		1536	on_logout => sub {
		1537	my ($pl) = @_;
		1538
		1539	# abort map switching before logout
		1540	if ($pl->ob->{_link_pos}) {
		1541	cf::sync_job {
		1542	$pl->ob->leave_link
		1543	};
		1544	}
		1545	},
		1546	on_login => sub {
		1547	my ($pl) = @_;
		1548
		1549	# try to abort aborted map switching on player login :)
		1550	# should happen only on crashes
		1551	if ($pl->ob->{_link_pos}) {
		1552
		1553	$pl->ob->enter_link;
		1554	(async {
		1555	# we need this sleep as the login has a concurrent enter_exit running
		1556	# and this sleep increases chances of the player not ending up in scorn
		1557	$pl->ob->reply (undef,
		1558	"There was an internal problem at your last logout, "
		1559	. "the server will try to bring you to your intended destination in a second.",
		1560	cf::NDI_RED);
		1561	Coro::Timer::sleep 1;
		1562	$pl->ob->leave_link;
		1563	})->prio (2);
		1564	}
		1565	},
		1566	);
		1567
		1568	=item $player_object->goto ($path, $x, $y)
		1569
		1570	=cut
		1571
		1572	sub cf::object::player::goto {
		1573	my ($self, $path, $x, $y) = @_;
		1574
		1575	$self->enter_link;
		1576
		1577	(async {
		1578	$path = new cf::path $path;
		1579
		1580	my $map = cf::map::find $path->as_string;
		1581	$map = $map->customise_for ($self) if $map;
		1582
		1583	# warn "entering ", $map->path, " at ($x, $y)\n"
		1584	# if $map;
		1585
		1586	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
		1587
		1588	$self->leave_link ($map, $x, $y);
		1589	})->prio (1);
		1590	}
		1591
		1592	=item $player_object->enter_exit ($exit_object)
		1593
		1594	=cut
		1595
		1596	sub parse_random_map_params {
		1597	my ($spec) = @_;
		1598
		1599	my $rmp = { # defaults
		1600	xsize => 10,
		1601	ysize => 10,
		1602	};
		1603
		1604	for (split /\n/, $spec) {
		1605	my ($k, $v) = split /\s+/, $_, 2;
		1606
		1607	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1608	}
		1609
		1610	$rmp
		1611	}
		1612
		1613	sub prepare_random_map {
		1614	my ($exit) = @_;
		1615
		1616	# all this does is basically replace the /! path by
		1617	# a new random map path (?random/...) with a seed
		1618	# that depends on the exit object
		1619
		1620	my $rmp = parse_random_map_params $exit->msg;
		1621
		1622	if ($exit->map) {
		1623	$rmp->{region} = $exit->map->region_name;
		1624	$rmp->{origin_map} = $exit->map->path;
		1625	$rmp->{origin_x} = $exit->x;
		1626	$rmp->{origin_y} = $exit->y;
		1627	}
		1628
		1629	$rmp->{random_seed} \|\|= $exit->random_seed;
		1630
		1631	my $data = cf::to_json $rmp;
		1632	my $md5 = Digest::MD5::md5_hex $data;
		1633
		1634	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY \| O_CREAT, 0666) {
		1635	aio_write $fh, 0, (length $data), $data, 0;
		1636
		1637	$exit->slaying ("?random/$md5");
		1638	$exit->msg (undef);
		1639	}
		1640	}
		1641
		1642	sub cf::object::player::enter_exit {
449	my ($self, $id, %msg) = @_;	1643	my ($self, $exit) = @_;
450		1644
451	$msg{msgid} = $id;	1645	return unless $self->type == cf::PLAYER;
452		1646
453	$self->send ("ext " . to_json \%msg);	1647	$self->enter_link;
454	}
455		1648
456	#############################################################################	1649	(async {
457	# map scripting support	1650	$self->deactivate_recursive; # just to be sure
		1651	unless (eval {
		1652	prepare_random_map $exit
		1653	if $exit->slaying eq "/!";
458		1654
		1655	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1656	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1657
		1658	1;
		1659	}) {
		1660	$self->message ("Something went wrong deep within the crossfire server. "
		1661	. "I'll try to bring you back to the map you were before. "
		1662	. "Please report this to the dungeon master",
		1663	cf::NDI_UNIQUE \| cf::NDI_RED);
		1664
		1665	warn "ERROR in enter_exit: $@";
		1666	$self->leave_link;
		1667	}
		1668	})->prio (1);
		1669	}
		1670
		1671	=head3 cf::client
		1672
		1673	=over 4
		1674
		1675	=item $client->send_drawinfo ($text, $flags)
		1676
		1677	Sends a drawinfo packet to the client. Circumvents output buffering so
		1678	should not be used under normal circumstances.
		1679
		1680	=cut
		1681
		1682	sub cf::client::send_drawinfo {
		1683	my ($self, $text, $flags) = @_;
		1684
		1685	utf8::encode $text;
		1686	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1687	}
		1688
		1689
		1690	=item $success = $client->query ($flags, "text", \&cb)
		1691
		1692	Queues a query to the client, calling the given callback with
		1693	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1694	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1695
		1696	Queries can fail, so check the return code. Or don't, as queries will become
		1697	reliable at some point in the future.
		1698
		1699	=cut
		1700
		1701	sub cf::client::query {
		1702	my ($self, $flags, $text, $cb) = @_;
		1703
		1704	return unless $self->state == ST_PLAYING
		1705	\|\| $self->state == ST_SETUP
		1706	\|\| $self->state == ST_CUSTOM;
		1707
		1708	$self->state (ST_CUSTOM);
		1709
		1710	utf8::encode $text;
		1711	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1712
		1713	$self->send_packet ($self->{query_queue}[0][0])
		1714	if @{ $self->{query_queue} } == 1;
		1715	}
		1716
		1717	cf::client->attach (
		1718	on_reply => sub {
		1719	my ($ns, $msg) = @_;
		1720
		1721	# this weird shuffling is so that direct followup queries
		1722	# get handled first
		1723	my $queue = delete $ns->{query_queue}
		1724	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1725
		1726	(shift @$queue)->[1]->($msg);
		1727
		1728	push @{ $ns->{query_queue} }, @$queue;
		1729
		1730	if (@{ $ns->{query_queue} } == @$queue) {
		1731	if (@$queue) {
		1732	$ns->send_packet ($ns->{query_queue}[0][0]);
		1733	} else {
		1734	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1735	}
		1736	}
		1737	},
		1738	);
		1739
		1740	=item $client->async (\&cb)
		1741
		1742	Create a new coroutine, running the specified callback. The coroutine will
		1743	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1744	or loss of connection).
		1745
		1746	=cut
		1747
		1748	sub cf::client::async {
		1749	my ($self, $cb) = @_;
		1750
		1751	my $coro = &Coro::async ($cb);
		1752
		1753	$coro->on_destroy (sub {
		1754	delete $self->{_coro}{$coro+0};
		1755	});
		1756
		1757	$self->{_coro}{$coro+0} = $coro;
		1758
		1759	$coro
		1760	}
		1761
		1762	cf::client->attach (
		1763	on_destroy => sub {
		1764	my ($ns) = @_;
		1765
		1766	$_->cancel for values %{ (delete $ns->{_coro}) \|\| {} };
		1767	},
		1768	);
		1769
		1770	=back
		1771
		1772
		1773	=head2 SAFE SCRIPTING
		1774
		1775	Functions that provide a safe environment to compile and execute
		1776	snippets of perl code without them endangering the safety of the server
		1777	itself. Looping constructs, I/O operators and other built-in functionality
		1778	is not available in the safe scripting environment, and the number of
		1779	functions and methods that can be called is greatly reduced.
		1780
		1781	=cut
		1782
459	our $safe = new Safe "ext";	1783	our $safe = new Safe "safe";
460	our $safe_hole = new Safe::Hole;	1784	our $safe_hole = new Safe::Hole;
461		1785
462	$SIG{FPE} = 'IGNORE';	1786	$SIG{FPE} = 'IGNORE';
463		1787
464	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1788	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
465		1789
466	# here we export the classes and methods available to script code	1790	# here we export the classes and methods available to script code
467		1791
		1792	=pod
		1793
		1794	The following fucntions and emthods are available within a safe environment:
		1795
		1796	cf::object contr pay_amount pay_player map
		1797	cf::object::player player
		1798	cf::player peaceful
		1799	cf::map trigger
		1800
		1801	=cut
		1802
468	for (	1803	for (
469	["cf::object" => qw(contr pay_amount pay_player)],	1804	["cf::object" => qw(contr pay_amount pay_player map)],
470	["cf::object::player" => qw(player)],	1805	["cf::object::player" => qw(player)],
471	["cf::player" => qw(peaceful)],	1806	["cf::player" => qw(peaceful)],
		1807	["cf::map" => qw(trigger)],
472	) {	1808	) {
473	no strict 'refs';	1809	no strict 'refs';
474	my ($pkg, @funs) = @$_;	1810	my ($pkg, @funs) = @$_;
475	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1811	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
476	for @funs;	1812	for @funs;
477	}	1813	}
		1814
		1815	=over 4
		1816
		1817	=item @retval = safe_eval $code, [var => value, ...]
		1818
		1819	Compiled and executes the given perl code snippet. additional var/value
		1820	pairs result in temporary local (my) scalar variables of the given name
		1821	that are available in the code snippet. Example:
		1822
		1823	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1824
		1825	=cut
478		1826
479	sub safe_eval($;@) {	1827	sub safe_eval($;@) {
480	my ($code, %vars) = @_;	1828	my ($code, %vars) = @_;
481		1829
482	my $qcode = $code;	1830	my $qcode = $code;
483	$qcode =~ s/"/‟/g; # not allowed in #line filenames	1831	$qcode =~ s/"/‟/g; # not allowed in #line filenames
484	$qcode =~ s/\n/\\n/g;	1832	$qcode =~ s/\n/\\n/g;
485		1833
486	local $_;	1834	local $_;
487	local @ext::cf::_safe_eval_args = values %vars;	1835	local @safe::cf::_safe_eval_args = values %vars;
488		1836
489	$code =	1837	my $eval =
490	"do {\n"	1838	"do {\n"
491	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	1839	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
492	. "#line 0 \"{$qcode}\"\n"	1840	. "#line 0 \"{$qcode}\"\n"
493	. $code	1841	. $code
494	. "\n}"	1842	. "\n}"
495	;	1843	;
496		1844
497	sub_generation_inc;	1845	sub_generation_inc;
498	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	1846	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
499	sub_generation_inc;	1847	sub_generation_inc;
500		1848
		1849	if ($@) {
		1850	warn "$@";
		1851	warn "while executing safe code '$code'\n";
		1852	warn "with arguments " . (join " ", %vars) . "\n";
		1853	}
		1854
501	wantarray ? @res : $res[0]	1855	wantarray ? @res : $res[0]
502	}	1856	}
		1857
		1858	=item cf::register_script_function $function => $cb
		1859
		1860	Register a function that can be called from within map/npc scripts. The
		1861	function should be reasonably secure and should be put into a package name
		1862	like the extension.
		1863
		1864	Example: register a function that gets called whenever a map script calls
		1865	C<rent::overview>, as used by the C<rent> extension.
		1866
		1867	cf::register_script_function "rent::overview" => sub {
		1868	...
		1869	};
		1870
		1871	=cut
503		1872
504	sub register_script_function {	1873	sub register_script_function {
505	my ($fun, $cb) = @_;	1874	my ($fun, $cb) = @_;
506		1875
507	no strict 'refs';	1876	no strict 'refs';
508	*{"ext::$fun"} = $safe_hole->wrap ($cb);	1877	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1878	}
		1879
		1880	=back
		1881
		1882	=cut
		1883
		1884	#############################################################################
		1885
		1886	=head2 EXTENSION DATABASE SUPPORT
		1887
		1888	Crossfire maintains a very simple database for extension use. It can
		1889	currently store anything that can be serialised using Storable, which
		1890	excludes objects.
		1891
		1892	The parameter C<$family> should best start with the name of the extension
		1893	using it, it should be unique.
		1894
		1895	=over 4
		1896
		1897	=item $hashref = cf::db_get $family
		1898
		1899	Return a hashref for use by the extension C<$family>, which can be
		1900	modified. After modifications, you have to call C<cf::db_dirty> or
		1901	C<cf::db_sync>.
		1902
		1903	=item $value = cf::db_get $family => $key
		1904
		1905	Returns a single value from the database
		1906
		1907	=item cf::db_put $family => $hashref
		1908
		1909	Stores the given family hashref into the database. Updates are delayed, if
		1910	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1911
		1912	=item cf::db_put $family => $key => $value
		1913
		1914	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1915	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1916
		1917	=item cf::db_dirty
		1918
		1919	Marks the database as dirty, to be updated at a later time.
		1920
		1921	=item cf::db_sync
		1922
		1923	Immediately write the database to disk I<if it is dirty>.
		1924
		1925	=cut
		1926
		1927	our $DB;
		1928
		1929	{
		1930	my $path = cf::localdir . "/database.pst";
		1931
		1932	sub db_load() {
		1933	$DB = stat $path ? Storable::retrieve $path : { };
		1934	}
		1935
		1936	my $pid;
		1937
		1938	sub db_save() {
		1939	waitpid $pid, 0 if $pid;
		1940	if (0 == ($pid = fork)) {
		1941	$DB->{_meta}{version} = 1;
		1942	Storable::nstore $DB, "$path~";
		1943	rename "$path~", $path;
		1944	cf::_exit 0 if defined $pid;
		1945	}
		1946	}
		1947
		1948	my $dirty;
		1949
		1950	sub db_sync() {
		1951	db_save if $dirty;
		1952	undef $dirty;
		1953	}
		1954
		1955	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1956	db_sync;
		1957	});
		1958
		1959	sub db_dirty() {
		1960	$dirty = 1;
		1961	$idle->start;
		1962	}
		1963
		1964	sub db_get($;$) {
		1965	@_ >= 2
		1966	? $DB->{$_[0]}{$_[1]}
		1967	: ($DB->{$_[0]} \|\|= { })
		1968	}
		1969
		1970	sub db_put($$;$) {
		1971	if (@_ >= 3) {
		1972	$DB->{$_[0]}{$_[1]} = $_[2];
		1973	} else {
		1974	$DB->{$_[0]} = $_[1];
		1975	}
		1976	db_dirty;
		1977	}
		1978
		1979	cf::global->attach (
		1980	prio => 10000,
		1981	on_cleanup => sub {
		1982	db_sync;
		1983	},
		1984	);
		1985	}
		1986
		1987	#############################################################################
		1988	# the server's main()
		1989
		1990	sub cfg_load {
		1991	open my $fh, "<:utf8", cf::confdir . "/config"
		1992	or return;
		1993
		1994	local $/;
		1995	*CFG = YAML::Syck::Load <$fh>;
		1996
		1997	$EMERGENCY_POSITION = $CFG{emergency_position} \|\| ["/world/world_105_115", 5, 37];
		1998
		1999	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2000	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2001
		2002	if (exists $CFG{mlockall}) {
		2003	eval {
		2004	$CFG{mlockall} ? &mlockall : &munlockall
		2005	and die "WARNING: m(un)lockall failed: $!\n";
		2006	};
		2007	warn $@ if $@;
		2008	}
		2009	}
		2010
		2011	sub main {
		2012	# we must not ever block the main coroutine
		2013	local $Coro::idle = sub {
		2014	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2015	async { Event::one_event };
		2016	};
		2017
		2018	cfg_load;
		2019	db_load;
		2020	load_extensions;
		2021	Event::loop;
509	}	2022	}
510		2023
511	#############################################################################	2024	#############################################################################
512	# initialisation	2025	# initialisation
513		2026
		2027	sub reload() {
		2028	# can/must only be called in main
		2029	if ($Coro::current != $Coro::main) {
		2030	warn "can only reload from main coroutine\n";
		2031	return;
		2032	}
		2033
		2034	warn "reloading...";
		2035
		2036	my $guard = freeze_mainloop;
		2037	cf::emergency_save;
		2038
		2039	eval {
		2040	# if anything goes wrong in here, we should simply crash as we already saved
		2041
		2042	# cancel all watchers
		2043	for (Event::all_watchers) {
		2044	$_->cancel if $_->data & WF_AUTOCANCEL;
		2045	}
		2046
		2047	# cancel all extension coros
		2048	$_->cancel for values %EXT_CORO;
		2049	%EXT_CORO = ();
		2050
		2051	# unload all extensions
		2052	for (@exts) {
		2053	warn "unloading <$_>";
		2054	unload_extension $_;
		2055	}
		2056
		2057	# unload all modules loaded from $LIBDIR
		2058	while (my ($k, $v) = each %INC) {
		2059	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2060
		2061	warn "removing <$k>";
		2062	delete $INC{$k};
		2063
		2064	$k =~ s/\.pm$//;
		2065	$k =~ s/\//::/g;
		2066
		2067	if (my $cb = $k->can ("unload_module")) {
		2068	$cb->();
		2069	}
		2070
		2071	Symbol::delete_package $k;
		2072	}
		2073
		2074	# sync database to disk
		2075	cf::db_sync;
		2076	IO::AIO::flush;
		2077
		2078	# get rid of safe::, as good as possible
		2079	Symbol::delete_package "safe::$_"
		2080	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2081
		2082	# remove register_script_function callbacks
		2083	# TODO
		2084
		2085	# unload cf.pm "a bit"
		2086	delete $INC{"cf.pm"};
		2087
		2088	# don't, removes xs symbols, too,
		2089	# and global variables created in xs
		2090	#Symbol::delete_package __PACKAGE__;
		2091
		2092	# reload cf.pm
		2093	warn "reloading cf.pm";
		2094	require cf;
		2095	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2096
		2097	# load config and database again
		2098	cf::cfg_load;
		2099	cf::db_load;
		2100
		2101	# load extensions
		2102	warn "load extensions";
		2103	cf::load_extensions;
		2104
		2105	# reattach attachments to objects
		2106	warn "reattach";
		2107	_global_reattach;
		2108	};
		2109
		2110	if ($@) {
		2111	warn $@;
		2112	warn "error while reloading, exiting.";
		2113	exit 1;
		2114	}
		2115
		2116	warn "reloaded successfully";
		2117	};
		2118
		2119	#############################################################################
		2120
		2121	unless ($LINK_MAP) {
		2122	$LINK_MAP = cf::map::new;
		2123
		2124	$LINK_MAP->width (41);
		2125	$LINK_MAP->height (41);
		2126	$LINK_MAP->alloc;
		2127	$LINK_MAP->path ("{link}");
		2128	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2129	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2130
		2131	# dirty hack because... archetypes are not yet loaded
		2132	Event->timer (
		2133	after => 2,
		2134	cb => sub {
		2135	$_[0]->w->cancel;
		2136
		2137	# provide some exits "home"
		2138	my $exit = cf::object::new "exit";
		2139
		2140	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2141	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2142	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2143
		2144	$LINK_MAP->insert ($exit->clone, 19, 19);
		2145	$LINK_MAP->insert ($exit->clone, 19, 20);
		2146	$LINK_MAP->insert ($exit->clone, 19, 21);
		2147	$LINK_MAP->insert ($exit->clone, 20, 19);
		2148	$LINK_MAP->insert ($exit->clone, 20, 21);
		2149	$LINK_MAP->insert ($exit->clone, 21, 19);
		2150	$LINK_MAP->insert ($exit->clone, 21, 20);
		2151	$LINK_MAP->insert ($exit->clone, 21, 21);
		2152
		2153	$exit->destroy;
		2154	});
		2155
		2156	$LINK_MAP->{deny_save} = 1;
		2157	$LINK_MAP->{deny_reset} = 1;
		2158
		2159	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2160	}
		2161
514	register "<global>", __PACKAGE__;	2162	register "<global>", __PACKAGE__;
515		2163
		2164	register_command "reload" => sub {
		2165	my ($who, $arg) = @_;
		2166
		2167	if ($who->flag (FLAG_WIZ)) {
		2168	$who->message ("start of reload.");
		2169	reload;
		2170	$who->message ("end of reload.");
		2171	}
		2172	};
		2173
516	unshift @INC, $LIBDIR;	2174	unshift @INC, $LIBDIR;
517		2175
518	load_extensions;	2176	$TICK_WATCHER = Event->timer (
		2177	reentrant => 0,
		2178	prio => 0,
		2179	at => $NEXT_TICK \|\| $TICK,
		2180	data => WF_AUTOCANCEL,
		2181	cb => sub {
		2182	cf::server_tick; # one server iteration
		2183	$RUNTIME += $TICK;
		2184	$NEXT_TICK += $TICK;
		2185
		2186	# if we are delayed by four ticks or more, skip them all
		2187	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		2188
		2189	$TICK_WATCHER->at ($NEXT_TICK);
		2190	$TICK_WATCHER->start;
		2191	},
		2192	);
		2193
		2194	IO::AIO::max_poll_time $TICK * 0.2;
		2195
		2196	Event->io (
		2197	fd => IO::AIO::poll_fileno,
		2198	poll => 'r',
		2199	prio => 5,
		2200	data => WF_AUTOCANCEL,
		2201	cb => \&IO::AIO::poll_cb,
		2202	);
		2203
		2204	Event->timer (
		2205	data => WF_AUTOCANCEL,
		2206	after => 0,
		2207	interval => 10,
		2208	cb => sub {
		2209	(Coro::unblock_sub {
		2210	write_runtime
		2211	or warn "ERROR: unable to write runtime file: $!";
		2212	})->();
		2213	},
		2214	);
		2215
		2216	END { cf::emergency_save }
519		2217
520	1	2218	1
521		2219

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.30 by elmex, Sat Aug 12 11:51:37 2006 UTC vs. Revision 1.141 by root, Fri Jan 5 20:08:53 2007 UTC

Diff Legend

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.30 by elmex, Sat Aug 12 11:51:37 2006 UTC vs.
Revision 1.141 by root, Fri Jan 5 20:08:53 2007 UTC