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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.39 by root, Fri Aug 25 13:24:50 2006 UTC vs.
Revision 1.153 by root, Mon Jan 8 23:36:16 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.32 ();
		23	use YAML::Syck ();
10	use Time::HiRes;	24	use Time::HiRes;
11	use Event;	25
12	$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
13		27
14	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;
15		30
		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
16	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
17	our @EVENT;	39	our @EVENT;
18	our @PLUGIN_EVENT;	40	our $LIBDIR = datadir . "/ext";
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";
22		41
23	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;	43	our $TICK_WATCHER;
25	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %PLAYER; # all users
		53	our %MAP; # all maps
		54	our $LINK_MAP; # the special {link} map
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO; # coroutines bound to extensions
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76	our $EMERGENCY_POSITION;
		77
		78	#############################################################################
		79
		80	=head2 GLOBAL VARIABLES
		81
		82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
		92
		93	=item $cf::LIBDIR
		94
		95	The perl library directory, where extensions and cf-specific modules can
		96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
		101
		102	=item $cf::TICK
		103
		104	The interval between server ticks, in seconds.
		105
		106	=item %cf::CFG
		107
		108	Configuration for the server, loaded from C</etc/crossfire/config>, or
		109	from wherever your confdir points to.
		110
		111	=back
		112
		113	=cut
26		114
27	BEGIN {	115	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
32	$msg .= "\n"	120	$msg .= "\n"
33	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
34		122
35	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	123	LOG llevError, $msg;
37	};	124	};
38	}	125	}
39		126
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		131	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
41		133
42	# generate property mutators	134	# we bless all objects into (empty) derived classes to force a method lookup
43	sub prop_gen {	135	# within the Safe compartment.
44	my ($prefix, $class) = @_;	136	for my $pkg (qw(
45		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
46	no strict 'refs';	143	no strict 'refs';
47
48	for my $prop (keys %PROP_TYPE) {
49	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
50	my $sub = lc $1;
51
52	my $type = $PROP_TYPE{$prop};
53	my $idx = $PROP_IDX {$prop};
54
55	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
56	$_[0]->get_property ($type, $idx)
57	};
58
59	*{"$class\::set_$sub"} = sub {
60	$_[0]->set_property ($type, $idx, $_[1]);
61	} unless $ignore_set{$prop};
62	}
63	}
64
65	# auto-generate most of the API
66
67	prop_gen OBJECT_PROP => "cf::object";
68	# CFAPI_OBJECT_ANIMATION?
69	prop_gen PLAYER_PROP => "cf::object::player";
70
71	prop_gen MAP_PROP => "cf::map";
72	prop_gen ARCH_PROP => "cf::arch";
73
74	# guessed hierarchies
75
76	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78
79	# we bless all objects into derived classes to force a method lookup
80	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
82	no strict 'refs';
83	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	145	}
85		146
86	$Event::DIED = sub {	147	$Event::DIED = sub {
87	warn "error in event callback: @_";	148	warn "error in event callback: @_";
88	};	149	};
89		150
90	my %ext_pkg;	151	my %ext_pkg;
91	my @exts;	152	my @exts;
92	my @hook;	153	my @hook;
93	my %command;	154
94	my %extcmd;	155	=head2 UTILITY FUNCTIONS
		156
		157	=over 4
		158
		159	=cut
		160
		161	use JSON::Syck (); # TODO# replace by JSON::PC once working
		162
		163	=item $ref = cf::from_json $json
		164
		165	Converts a JSON string into the corresponding perl data structure.
		166
		167	=cut
		168
		169	sub from_json($) {
		170	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		171	JSON::Syck::Load $_[0]
		172	}
		173
		174	=item $json = cf::to_json $ref
		175
		176	Converts a perl data structure into its JSON representation.
		177
		178	=cut
		179
		180	sub to_json($) {
		181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		182	JSON::Syck::Dump $_[0]
		183	}
		184
		185	=item cf::lock_wait $string
		186
		187	Wait until the given lock is available. See cf::lock_acquire.
		188
		189	=item my $lock = cf::lock_acquire $string
		190
		191	Wait until the given lock is available and then acquires it and returns
		192	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		193	for example when the coroutine gets canceled), the lock is automatically
		194	returned.
		195
		196	Lock names should begin with a unique identifier (for example, cf::map::find
		197	uses map_find and cf::map::load uses map_load).
		198
		199	=cut
		200
		201	our %LOCK;
		202
		203	sub lock_wait($) {
		204	my ($key) = @_;
		205
		206	# wait for lock, if any
		207	while ($LOCK{$key}) {
		208	push @{ $LOCK{$key} }, $Coro::current;
		209	Coro::schedule;
		210	}
		211	}
		212
		213	sub lock_acquire($) {
		214	my ($key) = @_;
		215
		216	# wait, to be sure we are not locked
		217	lock_wait $key;
		218
		219	$LOCK{$key} = [];
		220
		221	Coro::guard {
		222	# wake up all waiters, to be on the safe side
		223	$_->ready for @{ delete $LOCK{$key} };
		224	}
		225	}
		226
		227	sub freeze_mainloop {
		228	return unless $TICK_WATCHER->is_active;
		229
		230	my $guard = Coro::guard { $TICK_WATCHER->start };
		231	$TICK_WATCHER->stop;
		232	$guard
		233	}
		234
		235	=item cf::async { BLOCK }
		236
		237	Currently the same as Coro::async_pool, meaning you cannot use
		238	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		239	thing you are allowed to do is call C<prio> on it.
		240
		241	=cut
		242
		243	BEGIN { *async = \&Coro::async_pool }
		244
		245	=item cf::sync_job { BLOCK }
		246
		247	The design of crossfire+ requires that the main coro ($Coro::main) is
		248	always able to handle events or runnable, as crossfire+ is only partly
		249	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		250
		251	If it must be done, put the blocking parts into C<sync_job>. This will run
		252	the given BLOCK in another coroutine while waiting for the result. The
		253	server will be frozen during this time, so the block should either finish
		254	fast or be very important.
		255
		256	=cut
		257
		258	sub sync_job(&) {
		259	my ($job) = @_;
		260
		261	if ($Coro::current == $Coro::main) {
		262	# this is the main coro, too bad, we have to block
		263	# till the operation succeeds, freezing the server :/
		264
		265	# TODO: use suspend/resume instead
		266	# (but this is cancel-safe)
		267	my $freeze_guard = freeze_mainloop;
		268
		269	my $busy = 1;
		270	my @res;
		271
		272	(async {
		273	@res = eval { $job->() };
		274	warn $@ if $@;
		275	undef $busy;
		276	})->prio (Coro::PRIO_MAX);
		277
		278	while ($busy) {
		279	Coro::cede or Event::one_event;
		280	}
		281
		282	wantarray ? @res : $res[0]
		283	} else {
		284	# we are in another coroutine, how wonderful, everything just works
		285
		286	$job->()
		287	}
		288	}
		289
		290	=item $coro = cf::async_ext { BLOCK }
		291
		292	Like async, but this coro is automcatially being canceled when the
		293	extension calling this is being unloaded.
		294
		295	=cut
		296
		297	sub async_ext(&) {
		298	my $cb = shift;
		299
		300	my $coro = &Coro::async ($cb);
		301
		302	$coro->on_destroy (sub {
		303	delete $EXT_CORO{$coro+0};
		304	});
		305	$EXT_CORO{$coro+0} = $coro;
		306
		307	$coro
		308	}
		309
		310	sub write_runtime {
		311	my $runtime = cf::localdir . "/runtime";
		312
		313	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		314	or return;
		315
		316	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		317	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		318	and return;
		319
		320	aio_fsync $fh
		321	and return;
		322
		323	close $fh
		324	or return;
		325
		326	aio_rename "$runtime~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
		332	=back
		333
		334	=cut
95		335
96	#############################################################################	336	#############################################################################
97	# "new" plug-in system
98		337
99	=item cf::object::attach ... # NYI	338	package cf::path;
100		339
101	=item cf::attach_global ... # NYI	340	sub new {
		341	my ($class, $path, $base) = @_;
102		342
103	=item cf::attach_to_type ... # NYI	343	$path = $path->as_string if ref $path;
104		344
105	=item cf::attach_to_objects ... # NYI	345	my $self = bless { }, $class;
106		346
107	=item cf::attach_to_players ... # NYI	347	# {... are special paths that are not touched
		348	# ?xxx/... are special absolute paths
		349	# ?random/... random maps
		350	# /! non-realised random map exit
		351	# /... normal maps
		352	# ~/... per-player maps without a specific player (DO NOT USE)
		353	# ~user/... per-player map of a specific user
108		354
109	=item cf::attach_to_maps ... # NYI	355	if ($path =~ /^{/) {
		356	# fine as it is
		357	} elsif ($path =~ s{^\?random/}{}) {
		358	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		359	$self->{random} = cf::from_json $data;
		360	} else {
		361	if ($path =~ s{^~([^/]+)?}{}) {
		362	$self->{user_rel} = 1;
110		363
111	prio => $number, # higehr is earlier	364	if (defined $1) {
112	on_xxx => \&cb,	365	$self->{user} = $1;
		366	} elsif ($base =~ m{^~([^/]+)/}) {
		367	$self->{user} = $1;
		368	} else {
		369	warn "cannot resolve user-relative path without user <$path,$base>\n";
		370	}
		371	} elsif ($path =~ /^\//) {
		372	# already absolute
		373	} else {
		374	$base =~ s{[^/]+/?$}{};
		375	return $class->new ("$base/$path");
		376	}
		377
		378	for ($path) {
		379	redo if s{/\.?/}{/};
		380	redo if s{/[^/]+/\.\./}{/};
		381	}
		382	}
		383
		384	$self->{path} = $path;
		385
		386	$self
		387	}
		388
		389	# the name / primary key / in-game path
		390	sub as_string {
		391	my ($self) = @_;
		392
		393	$self->{user_rel} ? "~$self->{user}$self->{path}"
		394	: $self->{random} ? "?random/$self->{path}"
		395	: $self->{path}
		396	}
		397
		398	# the displayed name, this is a one way mapping
		399	sub visible_name {
		400	my ($self) = @_;
		401
		402	# if (my $rmp = $self->{random}) {
		403	# # todo: be more intelligent about this
		404	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		405	# } else {
		406	$self->as_string
		407	# }
		408	}
		409
		410	# escape the /'s in the path
		411	sub _escaped_path {
		412	# ∕ is U+2215
		413	(my $path = $_[0]{path}) =~ s/\//∕/g;
		414	$path
		415	}
		416
		417	# the original (read-only) location
		418	sub load_path {
		419	my ($self) = @_;
		420
		421	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		422	}
		423
		424	# the temporary/swap location
		425	sub save_path {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		429	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		430	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		431	}
		432
		433	# the unique path, might be eq to save_path
		434	sub uniq_path {
		435	my ($self) = @_;
		436
		437	$self->{user_rel} || $self->{random}
		438	? undef
		439	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		440	}
		441
		442	# return random map parameters, or undef
		443	sub random_map_params {
		444	my ($self) = @_;
		445
		446	$self->{random}
		447	}
		448
		449	# this is somewhat ugly, but style maps do need special treatment
		450	sub is_style_map {
		451	$_[0]{path} =~ m{^/styles/}
		452	}
		453
		454	package cf;
		455
		456	#############################################################################
		457
		458	=head2 ATTACHABLE OBJECTS
		459
		460	Many objects in crossfire are so-called attachable objects. That means you can
		461	attach callbacks/event handlers (a collection of which is called an "attachment")
		462	to it. All such attachable objects support the following methods.
		463
		464	In the following description, CLASS can be any of C<global>, C<object>
		465	C<player>, C<client> or C<map> (i.e. the attachable objects in
		466	crossfire+).
		467
		468	=over 4
		469
		470	=item $attachable->attach ($attachment, key => $value...)
		471
		472	=item $attachable->detach ($attachment)
		473
		474	Attach/detach a pre-registered attachment to a specific object and give it
		475	the specified key/value pairs as arguments.
		476
		477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
		479
		480	$obj->attach (minesweeper => width => 10, height => 10);
		481
		482	=item $bool = $attachable->attached ($name)
		483
		484	Checks wether the named attachment is currently attached to the object.
		485
		486	=item cf::CLASS->attach ...
		487
		488	=item cf::CLASS->detach ...
		489
		490	Define an anonymous attachment and attach it to all objects of the given
		491	CLASS. See the next function for an explanation of its arguments.
		492
		493	You can attach to global events by using the C<cf::global> class.
		494
		495	Example, log all player logins:
		496
		497	cf::player->attach (
		498	on_login => sub {
		499	my ($pl) = @_;
		500	...
		501	},
		502	);
		503
		504	Example, attach to the jeweler skill:
		505
		506	cf::object->attach (
		507	type => cf::SKILL,
		508	subtype => cf::SK_JEWELER,
		509	on_use_skill => sub {
		510	my ($sk, $ob, $part, $dir, $msg) = @_;
		511	...
		512	},
		513	);
		514
		515	=item cf::CLASS::attachment $name, ...
		516
		517	Register an attachment by C<$name> through which attachable objects of the
		518	given CLASS can refer to this attachment.
		519
		520	Some classes such as crossfire maps and objects can specify attachments
		521	that are attached at load/instantiate time, thus the need for a name.
		522
		523	These calls expect any number of the following handler/hook descriptions:
		524
		525	=over 4
		526
		527	=item prio => $number
		528
		529	Set the priority for all following handlers/hooks (unless overwritten
		530	by another C<prio> setting). Lower priority handlers get executed
		531	earlier. The default priority is C<0>, and many built-in handlers are
		532	registered at priority C<-1000>, so lower priorities should not be used
		533	unless you know what you are doing.
		534
		535	=item type => $type
		536
		537	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		538	given type of objects only (the additional parameter C<subtype> can be
		539	used to further limit to the given subtype).
		540
		541	=item on_I<event> => \&cb
		542
		543	Call the given code reference whenever the named event happens (event is
		544	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		545	handlers are recognised generally depends on the type of object these
		546	handlers attach to).
		547
		548	See F<include/eventinc.h> for the full list of events supported, and their
		549	class.
		550
113	package => package::,	551	=item package => package::
114		552
115	=cut	553	Look for sub functions of the name C<< on_I<event> >> in the given
		554	package and register them. Only handlers for eevents supported by the
		555	object/class are recognised.
116		556
117	our %CB_CLASS = (); # registry for class-based events	557	=back
		558
		559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
		561
		562	cf::object::attachment sockpuppet =>
		563	on_skill_attack => sub {
		564	my ($self, $victim) = @_;
		565	...
		566	}
		567	}
		568
		569	=item $attachable->valid
		570
		571	Just because you have a perl object does not mean that the corresponding
		572	C-level object still exists. If you try to access an object that has no
		573	valid C counterpart anymore you get an exception at runtime. This method
		574	can be used to test for existence of the C object part without causing an
		575	exception.
		576
		577	=cut
		578
		579	# the following variables are defined in .xs and must not be re-created
118	our @CB_GLOBAL = (); # registry for all global events	580	our @CB_GLOBAL = (); # registry for all global events
		581	our @CB_ATTACHABLE = (); # registry for all attachables
		582	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		583	our @CB_PLAYER = ();
		584	our @CB_CLIENT = ();
119	our @CB_TYPE = (); # registry for type (cf-object class) based events	585	our @CB_TYPE = (); # registry for type (cf-object class) based events
		586	our @CB_MAP = ();
120		587
		588	my %attachment;
		589
121	sub _attach_cb($\%$$$) {	590	sub _attach_cb($$$$) {
122	my ($registry, $undo, $event, $prio, $cb) = @_;	591	my ($registry, $event, $prio, $cb) = @_;
123		592
124	use sort 'stable';	593	use sort 'stable';
125		594
126	$cb = [$prio, $cb];	595	$cb = [$prio, $cb];
127		596
128	@{$registry->[$event]} = sort	597	@{$registry->[$event]} = sort
129	{ $a->[0] cmp $b->[0] }	598	{ $a->[0] cmp $b->[0] }
130	@{$registry->[$event] || []}, $cb;	599	@{$registry->[$event] || []}, $cb;
131
132	push @{$undo->{cb}}, [$event, $cb];
133	}	600	}
		601
		602	# hack
		603	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
134		604
135	# attach handles attaching event callbacks	605	# attach handles attaching event callbacks
136	# the only thing the caller has to do is pass the correct	606	# the only thing the caller has to do is pass the correct
137	# registry (== where the callback attaches to).	607	# registry (== where the callback attaches to).
138	sub _attach(\@$\@) {	608	sub _attach {
139	my ($registry, $klass, $arg) = @_;	609	my ($registry, $klass, @arg) = @_;
140		610
		611	my $object_type;
141	my $prio = 0;	612	my $prio = 0;
142
143	my %undo = (
144	registry => $registry,
145	cb => [],
146	);
147
148	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	613	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
149		614
		615	#TODO: get rid of this hack
		616	if ($attachable_klass{$klass}) {
		617	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		618	}
		619
150	while (@$arg) {	620	while (@arg) {
151	my $type = shift @$arg;	621	my $type = shift @arg;
152		622
153	if ($type eq "prio") {	623	if ($type eq "prio") {
154	$prio = shift @$arg;	624	$prio = shift @arg;
		625
		626	} elsif ($type eq "type") {
		627	$object_type = shift @arg;
		628	$registry = $CB_TYPE[$object_type] ||= [];
		629
		630	} elsif ($type eq "subtype") {
		631	defined $object_type or Carp::croak "subtype specified without type";
		632	my $object_subtype = shift @arg;
		633	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
155		634
156	} elsif ($type eq "package") {	635	} elsif ($type eq "package") {
157	my $pkg = shift @$arg;	636	my $pkg = shift @arg;
158		637
159	while (my ($name, $id) = each %cb_id) {	638	while (my ($name, $id) = each %cb_id) {
160	if (my $cb = $pkg->can ($name)) {	639	if (my $cb = $pkg->can ($name)) {
161	_attach_cb $registry, %undo, $id, $prio, $cb;	640	_attach_cb $registry, $id, $prio, $cb;
162	}	641	}
163	}	642	}
164		643
165	} elsif (exists $cb_id{$type}) {	644	} elsif (exists $cb_id{$type}) {
166	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;	645	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
167		646
168	} elsif (ref $type) {	647	} elsif (ref $type) {
169	warn "attaching objects not supported, ignoring.\n";	648	warn "attaching objects not supported, ignoring.\n";
170		649
171	} else {	650	} else {
172	shift @$arg;	651	shift @arg;
173	warn "attach argument '$type' not supported, ignoring.\n";	652	warn "attach argument '$type' not supported, ignoring.\n";
174	}	653	}
175	}	654	}
176
177	\%undo
178	}	655	}
179		656
180	sub cf::object::attach {	657	sub _object_attach {
181	die;	658	my ($obj, $name, %arg) = @_;
182	}
183		659
184	sub attach_global {	660	return if exists $obj->{_attachment}{$name};
185	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
186	}
187		661
188	sub attach_type {	662	if (my $attach = $attachment{$name}) {
189	my $type = shift;	663	my $registry = $obj->registry;
190	_attach @{$CB_TYPE[$type]}, KLASS_MAP, @_
191	}
192		664
193	sub attach_to_objects {	665	for (@$attach) {
194	_attach @{$CB_CLASS{cf::object::wrap::}}, KLASS_OBJECT, @_	666	my ($klass, @attach) = @$_;
195	}	667	_attach $registry, $klass, @attach;
		668	}
196		669
197	sub attach_to_players {	670	$obj->{$name} = \%arg;
198	_attach @{$CB_CLASS{cf::player::wrap::}}, KLASS_PLAYER, @_	671	} else {
199	}	672	warn "object uses attachment '$name' that is not available, postponing.\n";
		673	}
200		674
201	sub attach_to_maps {	675	$obj->{_attachment}{$name} = undef;
202	_attach @{$CB_CLASS{cf::map::wrap::}}, KLASS_MAP, @_	676	}
		677
		678	sub cf::attachable::attach {
		679	if (ref $_[0]) {
		680	_object_attach @_;
		681	} else {
		682	_attach shift->_attach_registry, @_;
		683	}
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
		688	my ($obj, $name) = @_;
		689
		690	if (ref $obj) {
		691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	};
		697
		698	sub cf::attachable::attached {
		699	my ($obj, $name) = @_;
		700
		701	exists $obj->{_attachment}{$name}
		702	}
		703
		704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
		709
		710	sub cf::\L$klass\E::attachment {
		711	my \$name = shift;
		712
		713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
203	}	717	}
204		718
205	our $override;	719	our $override;
		720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
206		721
207	sub override() {	722	sub override {
208	$override = 1	723	$override = 1;
		724	@invoke_results = ();
209	}	725	}
210		726
211	sub invoke {	727	sub do_invoke {
212	my $event = shift;	728	my $event = shift;
		729	my $callbacks = shift;
213		730
214	my @cb;	731	@invoke_results = ();
215
216	if (my $ref = ref $_[0]) {
217	# 1. object-specific (NYI)
218	# 2. class-specific
219	push @cb, @{$CB_CLASS{$ref}[$event] || []};
220	}
221
222	# global
223	push @cb, @{$CB_GLOBAL[$event] || []};
224
225	# warn "invoke id $EVENT[$event][0], args <@_> <=> @cb\n";#d#
226		732
227	local $override;	733	local $override;
228		734
229	for (@cb) {	735	for (@$callbacks) {
230	eval { &{$_->[1]} };	736	eval { &{$_->[1]} };
231		737
232	if ($@) {	738	if ($@) {
233	warn "$@";	739	warn "$@";
234	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
235	override;	741	override;
236	}	742	}
237		743
238	return 1 if $override;	744	return 1 if $override;
239	}	745	}
240		746
241	0	747	0
242	}	748	}
243		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
		760	=back
		761
		762	=cut
		763
244	#############################################################################	764	#############################################################################
245	# old plug-in events	765	# object support
246		766
247	sub inject_event {	767	sub reattach {
248	my $extension = shift;	768	# basically do the same as instantiate, without calling instantiate
249	my $event_code = shift;	769	my ($obj) = @_;
250		770
251	my $cb = $hook[$event_code]{$extension}	771	my $registry = $obj->registry;
		772
		773	@$registry = ();
		774
		775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		776
		777	for my $name (keys %{ $obj->{_attachment} || {} }) {
		778	if (my $attach = $attachment{$name}) {
		779	for (@$attach) {
		780	my ($klass, @attach) = @$_;
		781	_attach $registry, $klass, @attach;
		782	}
		783	} else {
		784	warn "object uses attachment '$name' that is not available, postponing.\n";
		785	}
		786	}
		787	}
		788
		789	cf::attachable->attach (
		790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
		803	on_clone => sub {
		804	my ($src, $dst) = @_;
		805
		806	@{$dst->registry} = @{$src->registry};
		807
		808	%$dst = %$src;
		809
		810	%{$dst->{_attachment}} = %{$src->{_attachment}}
		811	if exists $src->{_attachment};
		812	},
		813	);
		814
		815	sub object_freezer_save {
		816	my ($filename, $rdata, $objs) = @_;
		817
		818	sync_job {
		819	if (length $$rdata) {
		820	warn sprintf "saving %s (%d,%d)\n",
		821	$filename, length $$rdata, scalar @$objs;
		822
		823	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		824	chmod SAVE_MODE, $fh;
		825	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		826	aio_fsync $fh;
		827	close $fh;
		828
		829	if (@$objs) {
		830	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		831	chmod SAVE_MODE, $fh;
		832	my $data = Storable::nfreeze { version => 1, objs => $objs };
		833	aio_write $fh, 0, (length $data), $data, 0;
		834	aio_fsync $fh;
		835	close $fh;
		836	aio_rename "$filename.pst~", "$filename.pst";
		837	}
		838	} else {
		839	aio_unlink "$filename.pst";
		840	}
		841
		842	aio_rename "$filename~", $filename;
		843	} else {
		844	warn "FATAL: $filename~: $!\n";
		845	}
		846	} else {
		847	aio_unlink $filename;
		848	aio_unlink "$filename.pst";
		849	}
		850	}
		851	}
		852
		853	sub object_freezer_as_string {
		854	my ($rdata, $objs) = @_;
		855
		856	use Data::Dumper;
		857
		858	$$rdata . Dumper $objs
		859	}
		860
		861	sub object_thawer_load {
		862	my ($filename) = @_;
		863
		864	my ($data, $av);
		865
		866	(aio_load $filename, $data) >= 0
252	or return;	867	or return;
253		868
254	&$cb	869	unless (aio_stat "$filename.pst") {
255	}	870	(aio_load "$filename.pst", $av) >= 0
256
257	sub inject_global_event {
258	my $event = shift;
259
260	my $cb = $hook[$event]
261	or return;	871	or return;
262		872	$av = eval { (Storable::thaw $av)->{objs} };
263	List::Util::max map &$_, values %$cb
264	}
265
266	sub inject_command {
267	my ($name, $obj, $params) = @_;
268
269	for my $cmd (@{ $command{$name} }) {
270	$cmd->[1]->($obj, $params);
271	}	873	}
272		874
273	-1	875	warn sprintf "loading %s (%d)\n",
		876	$filename, length $data, scalar @{$av || []};#d#
		877	return ($data, $av);
274	}	878	}
		879
		880	#############################################################################
		881	# command handling &c
		882
		883	=item cf::register_command $name => \&callback($ob,$args);
		884
		885	Register a callback for execution when the client sends the user command
		886	$name.
		887
		888	=cut
275		889
276	sub register_command {	890	sub register_command {
277	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
278		892
279	my $caller = caller;	893	my $caller = caller;
280	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
281		895
282	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
283	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
284	}	897	}
		898
		899	=item cf::register_extcmd $name => \&callback($pl,$packet);
		900
		901	Register a callbackf ro execution when the client sends an extcmd packet.
		902
		903	If the callback returns something, it is sent back as if reply was being
		904	called.
		905
		906	=cut
285		907
286	sub register_extcmd {	908	sub register_extcmd {
287	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
288		910
289	my $caller = caller;	911	my $caller = caller;
290	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
291		913
292	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
293	}	915	}
		916
		917	cf::player->attach (
		918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
		920
		921	my $cb = $COMMAND{$name}
		922	or return;
		923
		924	for my $cmd (@$cb) {
		925	$cmd->[1]->($pl->ob, $params);
		926	}
		927
		928	cf::override;
		929	},
		930	on_extcmd => sub {
		931	my ($pl, $buf) = @_;
		932
		933	my $msg = eval { from_json $buf };
		934
		935	if (ref $msg) {
		936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		937	if (my %reply = $cb->[0]->($pl, $msg)) {
		938	$pl->ext_reply ($msg->{msgid}, %reply);
		939	}
		940	}
		941	} else {
		942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		943	}
		944
		945	cf::override;
		946	},
		947	);
294		948
295	sub register {	949	sub register {
296	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
297		951
298	for my $idx (0 .. $#PLUGIN_EVENT) {	952	#TODO
299	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
300	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
301	$hook[$idx]{$base} = $ref;
302	}
303	}
304	}	953	}
305		954
306	sub load_extension {	955	sub load_extension {
307	my ($path) = @_;	956	my ($path) = @_;
308		957
309	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	958	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
310	my $base = $1;	959	my $base = $1;
311	my $pkg = $1;	960	my $pkg = $1;
312	$pkg =~ s/[^[:word:]]/_/g;	961	$pkg =~ s/[^[:word:]]/_/g;
313	$pkg = "cf::ext::$pkg";	962	$pkg = "ext::$pkg";
314		963
315	warn "loading '$path' into '$pkg'\n";	964	warn "loading '$path' into '$pkg'\n";
316		965
317	open my $fh, "<:utf8", $path	966	open my $fh, "<:utf8", $path
318	or die "$path: $!";	967	or die "$path: $!";
…		…
322	. "#line 1 \"$path\"\n{\n"	971	. "#line 1 \"$path\"\n{\n"
323	. (do { local $/; <$fh> })	972	. (do { local $/; <$fh> })
324	. "\n};\n1";	973	. "\n};\n1";
325		974
326	eval $source	975	eval $source
327	or die "$path: $@";	976	or die $@ ? "$path: $@\n"
		977	: "extension disabled.\n";
328		978
329	push @exts, $pkg;	979	push @exts, $pkg;
330	$ext_pkg{$base} = $pkg;	980	$ext_pkg{$base} = $pkg;
331		981
332	# no strict 'refs';	982	# no strict 'refs';
…		…
339	my ($pkg) = @_;	989	my ($pkg) = @_;
340		990
341	warn "removing extension $pkg\n";	991	warn "removing extension $pkg\n";
342		992
343	# remove hooks	993	# remove hooks
		994	#TODO
344	for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
345	delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
346	}	997	# }
347		998
348	# remove commands	999	# remove commands
349	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
350	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
351		1002
352	if (@cb) {	1003	if (@cb) {
353	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
354	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
355	} else {	1005	} else {
356	delete $command{$name};
357	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
358	}	1007	}
359	}	1008	}
360		1009
361	# remove extcmds	1010	# remove extcmds
362	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
363	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
364	}	1013	}
365		1014
366	if (my $cb = $pkg->can ("on_unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
367	eval {	1016	eval {
368	$cb->($pkg);	1017	$cb->($pkg);
369	1	1018	1
370	} or warn "$pkg unloaded, but with errors: $@";	1019	} or warn "$pkg unloaded, but with errors: $@";
371	}	1020	}
372		1021
373	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
374	}	1023	}
375		1024
376	sub load_extensions {	1025	sub load_extensions {
377	my $LIBDIR = maps_directory "perl";
378
379	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
380	next unless -r $ext;	1027	next unless -r $ext;
381	eval {	1028	eval {
382	load_extension $ext;	1029	load_extension $ext;
383	1	1030	1
384	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
385	}	1032	}
386	}	1033	}
387		1034
388	sub _perl_reload(&) {
389	my ($msg) = @_;
390
391	$msg->("reloading...");
392
393	eval {
394	# 1. cancel all watchers
395	$_->cancel for Event::all_watchers;
396
397	# 2. unload all extensions
398	for (@exts) {
399	$msg->("unloading <$_>");
400	unload_extension $_;
401	}
402
403	# 3. unload all modules loaded from $LIBDIR
404	while (my ($k, $v) = each %INC) {
405	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
406
407	$msg->("removing <$k>");
408	delete $INC{$k};
409
410	$k =~ s/\.pm$//;
411	$k =~ s/\//::/g;
412
413	if (my $cb = $k->can ("unload_module")) {
414	$cb->();
415	}
416
417	Symbol::delete_package $k;
418	}
419
420	# 4. get rid of ext::, as good as possible
421	Symbol::delete_package "ext::$_"
422	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
423
424	# 5. remove register_script_function callbacks
425	# TODO
426
427	# 6. unload cf.pm "a bit"
428	delete $INC{"cf.pm"};
429
430	# don't, removes xs symbols, too
431	#Symbol::delete_package __PACKAGE__;
432
433	# 7. reload cf.pm
434	$msg->("reloading cf.pm");
435	require cf;
436	};
437	$msg->($@) if $@;
438
439	$msg->("reloaded");
440	};
441
442	sub perl_reload() {
443	_perl_reload {
444	warn $_[0];
445	print "$_[0]\n";
446	};
447	}
448
449	register_command "perl-reload", 0, sub {
450	my ($who, $arg) = @_;
451
452	if ($who->flag (FLAG_WIZ)) {
453	_perl_reload {
454	warn $_[0];
455	$who->message ($_[0]);
456	};
457	}
458	};
459
460	#############################################################################
461	# utility functions
462
463	use JSON::Syck (); # TODO# replace by JSON::PC once working
464
465	sub from_json($) {
466	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
467	JSON::Syck::Load $_[0]
468	}
469
470	sub to_json($) {
471	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
472	JSON::Syck::Dump $_[0]
473	}
474
475	#############################################################################
476	# extcmd framework, basically convert ext <msg>
477	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
478
479	sub on_extcmd {
480	my ($pl, $buf) = @_;
481
482	my $msg = eval { from_json $buf };
483
484	if (ref $msg) {
485	if (my $cb = $extcmd{$msg->{msgtype}}) {
486	if (my %reply = $cb->[0]->($pl, $msg)) {
487	$pl->ext_reply ($msg->{msgid}, %reply);
488	}
489	}
490	} else {
491	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
492	}
493
494	1
495	}
496
497	#############################################################################	1035	#############################################################################
498	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
499		1037
500	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
501	my ($map) = @_;	1039	my ($map) = @_;
502		1040
503	my $path = $map->tmpname;	1041	my $path = $map->tmpname;
504	defined $path or return;	1042	defined $path or return;
505		1043
506	unlink "$path.cfperl";	1044	unlink "$path.pst";
507	};	1045	};
508		1046
509	*cf::mapsupport::on_swapin =
510	*cf::mapsupport::on_load = sub {
511	my ($map) = @_;
512
513	my $path = $map->tmpname;
514	$path = $map->path unless defined $path;
515
516	open my $fh, "<:raw", "$path.cfperl"
517	or return; # no perl data
518
519	my $data = Storable::thaw do { local $/; <$fh> };
520
521	$data->{version} <= 1
522	or return; # too new
523
524	$map->_set_obs ($data->{obs});
525	};
526
527	*cf::mapsupport::on_swapout = sub {
528	my ($map) = @_;
529
530	my $path = $map->tmpname;
531	$path = $map->path unless defined $path;
532
533	my $obs = $map->_get_obs;
534
535	if (defined $obs) {
536	open my $fh, ">:raw", "$path.cfperl"
537	or die "$path.cfperl: $!";
538
539	stat $path;
540
541	print $fh Storable::nfreeze {
542	size => (stat _)[7],
543	time => (stat _)[9],
544	version => 1,
545	obs => $obs,
546	};
547
548	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
549	} else {
550	unlink "$path.cfperl";
551	}
552	};
553
554	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
555		1048
556	#############################################################################	1049	#############################################################################
557	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
558		1051
559	sub all_objects(@) {	1052	sub all_objects(@) {
560	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
561	}	1054	}
562		1055
563	attach_to_players	1056	# TODO: compatibility cruft, remove when no longer needed
		1057	cf::player->attach (
564	on_load => sub {	1058	on_load => sub {
565	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
566		1060
567	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
568	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
570		1064
571	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
572	}	1066	}
573	}	1067	}
574	},	1068	},
575	on_save => sub {	1069	);
576	my ($pl, $path) = @_;
577
578	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
579	for grep %$_, all_objects $pl->ob;
580	},
581	;
582		1070
583	#############################################################################	1071	#############################################################################
584	# core extensions - in perl
585		1072
		1073	=head2 CORE EXTENSIONS
		1074
		1075	Functions and methods that extend core crossfire objects.
		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
		1083	=over 4
		1084
586	=item cf::player::exists $login	1085	=item cf::player::find $login
587		1086
588	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
589		1088
590	=cut	1089	=cut
591		1090
592	sub cf::player::exists($) {	1091	sub playerdir($) {
593	cf::player::find $_[0]	1092	cf::localdir
594	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	. "/"
		1094	. cf::playerdir
		1095	. "/"
		1096	. (ref $_[0] ? $_[0]->ob->name : $_[0])
595	}	1097	}
596		1098
		1099	sub path($) {
		1100	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1101
		1102	(playerdir $login) . "/$login.pl"
		1103	}
		1104
		1105	sub find_active($) {
		1106	$cf::PLAYER{$_[0]}
		1107	and $cf::PLAYER{$_[0]}->active
		1108	and $cf::PLAYER{$_[0]}
		1109	}
		1110
		1111	sub exists($) {
		1112	my ($login) = @_;
		1113
		1114	$cf::PLAYER{$login}
		1115	or cf::sync_job { !aio_stat $login }
		1116	}
		1117
		1118	sub find($) {
		1119	return $cf::PLAYER{$_[0]} || do {
		1120	my $login = $_[0];
		1121
		1122	my $guard = cf::lock_acquire "user_find:$login";
		1123
		1124	$cf::PLAYER{$_[0]} || do {
		1125	my $pl = load_pl path $login
		1126	or return;
		1127	$cf::PLAYER{$login} = $pl
		1128	}
		1129	}
		1130	}
		1131
		1132	sub save($) {
		1133	my ($pl) = @_;
		1134
		1135	return if $pl->{deny_save};
		1136
		1137	my $path = path $pl;
		1138	my $guard = cf::lock_acquire "user_save:$path";
		1139
		1140	return if $pl->{deny_save};
		1141
		1142	Coro::AIO::aio_mkdir playerdir $pl, 0770;
		1143	$pl->{last_save} = $cf::RUNTIME;
		1144
		1145	$pl->save_pl ($path);
		1146	Coro::cede;
		1147	}
		1148
		1149	sub new($) {
		1150	my ($login) = @_;
		1151
		1152	my $self = create;
		1153
		1154	$self->ob->name ($login);
		1155	$self->{deny_save} = 1;
		1156
		1157	$cf::PLAYER{$login} = $self;
		1158
		1159	$self
		1160	}
		1161
		1162	sub quit_character {
		1163	my ($pl) = @_;
		1164
		1165	$pl->{deny_save} = 1;
		1166	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1167
		1168	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1169	$pl->deactivate;
		1170	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1171	$pl->ns->destroy if $pl->ns;
		1172
		1173	my $path = playerdir $pl;
		1174	my $temp = "$path~$cf::RUNTIME~deleting~";
		1175	Coro::AIO::aio_rename $path, $temp;
		1176	delete $cf::PLAYER{$pl->ob->name};
		1177	$pl->destroy;
		1178	IO::AIO::aio_rmtree $temp;
		1179	}
		1180
		1181	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1182
		1183	Sends an ext reply to the player.
		1184
		1185	=cut
		1186
		1187	sub ext_reply($$$%) {
		1188	my ($self, $id, %msg) = @_;
		1189
		1190	$msg{msgid} = $id;
		1191
		1192	$self->send ("ext " . cf::to_json \%msg);
		1193	}
		1194
		1195	package cf;
		1196
		1197	=back
		1198
		1199
		1200	=head3 cf::map
		1201
		1202	=over 4
		1203
		1204	=cut
		1205
		1206	package cf::map;
		1207
		1208	use Fcntl;
		1209	use Coro::AIO;
		1210
		1211	our $MAX_RESET = 3600;
		1212	our $DEFAULT_RESET = 3000;
		1213
		1214	sub generate_random_map {
		1215	my ($path, $rmp) = @_;
		1216
		1217	# mit "rum" bekleckern, nicht
		1218	cf::map::_create_random_map
		1219	$path,
		1220	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1221	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1222	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1223	$rmp->{exit_on_final_map},
		1224	$rmp->{xsize}, $rmp->{ysize},
		1225	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1226	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1227	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1228	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1229	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1230	(cf::region::find $rmp->{region})
		1231	}
		1232
		1233	# and all this just because we cannot iterate over
		1234	# all maps in C++...
		1235	sub change_all_map_light {
		1236	my ($change) = @_;
		1237
		1238	$_->change_map_light ($change)
		1239	for grep $_->outdoor, values %cf::MAP;
		1240	}
		1241
		1242	sub try_load_header($) {
		1243	my ($path) = @_;
		1244
		1245	utf8::encode $path;
		1246	aio_open $path, O_RDONLY, 0
		1247	or return;
		1248
		1249	my $map = cf::map::new
		1250	or return;
		1251
		1252	# for better error messages only, will be overwritten
		1253	$map->path ($path);
		1254
		1255	$map->load_header ($path)
		1256	or return;
		1257
		1258	$map->{load_path} = $path;
		1259
		1260	$map
		1261	}
		1262
		1263	sub find;
		1264	sub find {
		1265	my ($path, $origin) = @_;
		1266
		1267	#warn "find<$path,$origin>\n";#d#
		1268
		1269	$path = new cf::path $path, $origin && $origin->path;
		1270	my $key = $path->as_string;
		1271
		1272	cf::lock_wait "map_find:$key";
		1273
		1274	$cf::MAP{$key} || do {
		1275	my $guard = cf::lock_acquire "map_find:$key";
		1276
		1277	# do it the slow way
		1278	my $map = try_load_header $path->save_path;
		1279
		1280	Coro::cede;
		1281
		1282	if ($map) {
		1283	$map->last_access ((delete $map->{last_access})
		1284	|| $cf::RUNTIME); #d#
		1285	# safety
		1286	$map->{instantiate_time} = $cf::RUNTIME
		1287	if $map->{instantiate_time} > $cf::RUNTIME;
		1288	} else {
		1289	if (my $rmp = $path->random_map_params) {
		1290	$map = generate_random_map $key, $rmp;
		1291	} else {
		1292	$map = try_load_header $path->load_path;
		1293	}
		1294
		1295	$map or return;
		1296
		1297	$map->{load_original} = 1;
		1298	$map->{instantiate_time} = $cf::RUNTIME;
		1299	$map->last_access ($cf::RUNTIME);
		1300	$map->instantiate;
		1301
		1302	# per-player maps become, after loading, normal maps
		1303	$map->per_player (0) if $path->{user_rel};
		1304	}
		1305
		1306	$map->path ($key);
		1307	$map->{path} = $path;
		1308	$map->{last_save} = $cf::RUNTIME;
		1309
		1310	Coro::cede;
		1311
		1312	if ($map->should_reset) {
		1313	$map->reset;
		1314	undef $guard;
		1315	$map = find $path
		1316	or return;
		1317	}
		1318
		1319	$cf::MAP{$key} = $map
		1320	}
		1321	}
		1322
		1323	sub load {
		1324	my ($self) = @_;
		1325
		1326	my $path = $self->{path};
		1327	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1328
		1329	return if $self->in_memory != cf::MAP_SWAPPED;
		1330
		1331	$self->in_memory (cf::MAP_LOADING);
		1332
		1333	$self->alloc;
		1334	$self->load_objects ($self->{load_path}, 1)
		1335	or return;
		1336
		1337	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1338	if delete $self->{load_original};
		1339
		1340	if (my $uniq = $path->uniq_path) {
		1341	utf8::encode $uniq;
		1342	if (aio_open $uniq, O_RDONLY, 0) {
		1343	$self->clear_unique_items;
		1344	$self->load_objects ($uniq, 0);
		1345	}
		1346	}
		1347
		1348	Coro::cede;
		1349
		1350	# now do the right thing for maps
		1351	$self->link_multipart_objects;
		1352
		1353	if ($self->{path}->is_style_map) {
		1354	$self->{deny_save} = 1;
		1355	$self->{deny_reset} = 1;
		1356	} else {
		1357	$self->fix_auto_apply;
		1358	$self->decay_objects;
		1359	$self->update_buttons;
		1360	$self->set_darkness_map;
		1361	$self->difficulty ($self->estimate_difficulty)
		1362	unless $self->difficulty;
		1363	$self->activate;
		1364	}
		1365
		1366	Coro::cede;
		1367
		1368	$self->in_memory (cf::MAP_IN_MEMORY);
		1369	}
		1370
		1371	sub find_sync {
		1372	my ($path, $origin) = @_;
		1373
		1374	cf::sync_job { cf::map::find $path, $origin }
		1375	}
		1376
		1377	sub do_load_sync {
		1378	my ($map) = @_;
		1379
		1380	cf::sync_job { $map->load };
		1381	}
		1382
		1383	sub save {
		1384	my ($self) = @_;
		1385
		1386	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1387
		1388	$self->{last_save} = $cf::RUNTIME;
		1389
		1390	return unless $self->dirty;
		1391
		1392	my $save = $self->{path}->save_path; utf8::encode $save;
		1393	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1394
		1395	$self->{load_path} = $save;
		1396
		1397	return if $self->{deny_save};
		1398
		1399	local $self->{last_access} = $self->last_access;#d#
		1400
		1401	cf::async {
		1402	$_->contr->save for $self->players;
		1403	};
		1404
		1405	if ($uniq) {
		1406	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1407	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1408	} else {
		1409	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1410	}
		1411	}
		1412
		1413	sub swap_out {
		1414	my ($self) = @_;
		1415
		1416	# save first because save cedes
		1417	$self->save;
		1418
		1419	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1420
		1421	return if $self->players;
		1422	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1423	return if $self->{deny_save};
		1424
		1425	$self->clear;
		1426	$self->in_memory (cf::MAP_SWAPPED);
		1427	}
		1428
		1429	sub reset_at {
		1430	my ($self) = @_;
		1431
		1432	# TODO: safety, remove and allow resettable per-player maps
		1433	return 1e99 if $self->{path}{user_rel};
		1434	return 1e99 if $self->{deny_reset};
		1435
		1436	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1437	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1438
		1439	$time + $to
		1440	}
		1441
		1442	sub should_reset {
		1443	my ($self) = @_;
		1444
		1445	$self->reset_at <= $cf::RUNTIME
		1446	}
		1447
		1448	sub unlink_save {
		1449	my ($self) = @_;
		1450
		1451	utf8::encode (my $save = $self->{path}->save_path);
		1452	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1453	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1454	}
		1455
		1456	sub rename {
		1457	my ($self, $new_path) = @_;
		1458
		1459	$self->unlink_save;
		1460
		1461	delete $cf::MAP{$self->path};
		1462	$self->{path} = new cf::path $new_path;
		1463	$self->path ($self->{path}->as_string);
		1464	$cf::MAP{$self->path} = $self;
		1465
		1466	$self->save;
		1467	}
		1468
		1469	sub reset {
		1470	my ($self) = @_;
		1471
		1472	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1473
		1474	return if $self->players;
		1475	return if $self->{path}{user_rel};#d#
		1476
		1477	warn "resetting map ", $self->path;#d#
		1478
		1479	delete $cf::MAP{$self->path};
		1480
		1481	$_->clear_links_to ($self) for values %cf::MAP;
		1482
		1483	$self->unlink_save;
		1484	$self->destroy;
		1485	}
		1486
		1487	my $nuke_counter = "aaaa";
		1488
		1489	sub nuke {
		1490	my ($self) = @_;
		1491
		1492	$self->{deny_save} = 1;
		1493	$self->reset_timeout (1);
		1494	$self->rename ("{nuke}/" . ($nuke_counter++));
		1495	$self->reset; # polite request, might not happen
		1496	}
		1497
		1498	sub customise_for {
		1499	my ($map, $ob) = @_;
		1500
		1501	if ($map->per_player) {
		1502	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1503	}
		1504
		1505	$map
		1506	}
		1507
		1508	sub emergency_save {
		1509	my $freeze_guard = cf::freeze_mainloop;
		1510
		1511	warn "enter emergency perl save\n";
		1512
		1513	cf::sync_job {
		1514	warn "begin emergency player save\n";
		1515	$_->save for values %cf::PLAYER;
		1516	warn "end emergency player save\n";
		1517
		1518	warn "begin emergency map save\n";
		1519	$_->save for values %cf::MAP;
		1520	warn "end emergency map save\n";
		1521	};
		1522
		1523	warn "leave emergency perl save\n";
		1524	}
		1525
		1526	package cf;
		1527
		1528	=back
		1529
		1530
		1531	=head3 cf::object::player
		1532
		1533	=over 4
		1534
597	=item $player->reply ($npc, $msg[, $flags])	1535	=item $player_object->reply ($npc, $msg[, $flags])
598		1536
599	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1537	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
600	can be C<undef>. Does the right thing when the player is currently in a	1538	can be C<undef>. Does the right thing when the player is currently in a
601	dialogue with the given NPC character.	1539	dialogue with the given NPC character.
602		1540
603	=cut	1541	=cut
604		1542
605	# rough implementation of a future "reply" method that works	1543	# rough implementation of a future "reply" method that works
606	# with dialog boxes.	1544	# with dialog boxes.
		1545	#TODO: the first argument must go, split into a $npc->reply_to ( method
607	sub cf::object::player::reply($$$;$) {	1546	sub cf::object::player::reply($$$;$) {
608	my ($self, $npc, $msg, $flags) = @_;	1547	my ($self, $npc, $msg, $flags) = @_;
609		1548
610	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1549	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
611		1550
…		…
615	$msg = $npc->name . " says: $msg" if $npc;	1554	$msg = $npc->name . " says: $msg" if $npc;
616	$self->message ($msg, $flags);	1555	$self->message ($msg, $flags);
617	}	1556	}
618	}	1557	}
619		1558
620	=item $player->ext_reply ($msgid, $msgtype, %msg)	1559	=item $player_object->may ("access")
621		1560
622	Sends an ext reply to the player.	1561	Returns wether the given player is authorized to access resource "access"
		1562	(e.g. "command_wizcast").
623		1563
624	=cut	1564	=cut
625		1565
626	sub cf::player::ext_reply($$$%) {	1566	sub cf::object::player::may {
		1567	my ($self, $access) = @_;
		1568
		1569	$self->flag (cf::FLAG_WIZ) ||
		1570	(ref $cf::CFG{"may_$access"}
		1571	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1572	: $cf::CFG{"may_$access"})
		1573	}
		1574
		1575	=item $player_object->enter_link
		1576
		1577	Freezes the player and moves him/her to a special map (C<{link}>).
		1578
		1579	The player should be reaosnably safe there for short amounts of time. You
		1580	I<MUST> call C<leave_link> as soon as possible, though.
		1581
		1582	=item $player_object->leave_link ($map, $x, $y)
		1583
		1584	Moves the player out of the specila link map onto the given map. If the
		1585	map is not valid (or omitted), the player will be moved back to the
		1586	location he/she was before the call to C<enter_link>, or, if that fails,
		1587	to the emergency map position.
		1588
		1589	Might block.
		1590
		1591	=cut
		1592
		1593	sub cf::object::player::enter_link {
		1594	my ($self) = @_;
		1595
		1596	$self->deactivate_recursive;
		1597
		1598	return if $self->map == $LINK_MAP;
		1599
		1600	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1601	if $self->map;
		1602
		1603	$self->enter_map ($LINK_MAP, 20, 20);
		1604	}
		1605
		1606	sub cf::object::player::leave_link {
		1607	my ($self, $map, $x, $y) = @_;
		1608
		1609	my $link_pos = delete $self->{_link_pos};
		1610
		1611	unless ($map) {
		1612	# restore original map position
		1613	($map, $x, $y) = @{ $link_pos || [] };
		1614	$map = cf::map::find $map;
		1615
		1616	unless ($map) {
		1617	($map, $x, $y) = @$EMERGENCY_POSITION;
		1618	$map = cf::map::find $map
		1619	or die "FATAL: cannot load emergency map\n";
		1620	}
		1621	}
		1622
		1623	($x, $y) = (-1, -1)
		1624	unless (defined $x) && (defined $y);
		1625
		1626	# use -1 or undef as default coordinates, not 0, 0
		1627	($x, $y) = ($map->enter_x, $map->enter_y)
		1628	if $x <=0 && $y <= 0;
		1629
		1630	$map->load;
		1631
		1632	return unless $self->contr->active;
		1633	$self->activate_recursive;
		1634	$self->enter_map ($map, $x, $y);
		1635	}
		1636
		1637	cf::player->attach (
		1638	on_logout => sub {
		1639	my ($pl) = @_;
		1640
		1641	# abort map switching before logout
		1642	if ($pl->ob->{_link_pos}) {
		1643	cf::sync_job {
		1644	$pl->ob->leave_link
		1645	};
		1646	}
		1647	},
		1648	on_login => sub {
		1649	my ($pl) = @_;
		1650
		1651	# try to abort aborted map switching on player login :)
		1652	# should happen only on crashes
		1653	if ($pl->ob->{_link_pos}) {
		1654	$pl->ob->enter_link;
		1655	(async {
		1656	# we need this sleep as the login has a concurrent enter_exit running
		1657	# and this sleep increases chances of the player not ending up in scorn
		1658	$pl->ob->reply (undef,
		1659	"There was an internal problem at your last logout, "
		1660	. "the server will try to bring you to your intended destination in a second.",
		1661	cf::NDI_RED);
		1662	Coro::Timer::sleep 1;
		1663	$pl->ob->leave_link;
		1664	})->prio (2);
		1665	}
		1666	},
		1667	);
		1668
		1669	=item $player_object->goto ($path, $x, $y)
		1670
		1671	=cut
		1672
		1673	sub cf::object::player::goto {
		1674	my ($self, $path, $x, $y) = @_;
		1675
		1676	$path = new cf::path $path;
		1677	$path ne "/" or Carp::cluck ("oy");#d#
		1678
		1679	$self->enter_link;
		1680
		1681	(async {
		1682	my $map = cf::map::find $path->as_string;
		1683	$map = $map->customise_for ($self) if $map;
		1684
		1685	# warn "entering ", $map->path, " at ($x, $y)\n"
		1686	# if $map;
		1687
		1688	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1689
		1690	$self->leave_link ($map, $x, $y);
		1691	})->prio (1);
		1692	}
		1693
		1694	=item $player_object->enter_exit ($exit_object)
		1695
		1696	=cut
		1697
		1698	sub parse_random_map_params {
		1699	my ($spec) = @_;
		1700
		1701	my $rmp = { # defaults
		1702	xsize => 10,
		1703	ysize => 10,
		1704	};
		1705
		1706	for (split /\n/, $spec) {
		1707	my ($k, $v) = split /\s+/, $_, 2;
		1708
		1709	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1710	}
		1711
		1712	$rmp
		1713	}
		1714
		1715	sub prepare_random_map {
		1716	my ($exit) = @_;
		1717
		1718	# all this does is basically replace the /! path by
		1719	# a new random map path (?random/...) with a seed
		1720	# that depends on the exit object
		1721
		1722	my $rmp = parse_random_map_params $exit->msg;
		1723
		1724	if ($exit->map) {
		1725	$rmp->{region} = $exit->map->region_name;
		1726	$rmp->{origin_map} = $exit->map->path;
		1727	$rmp->{origin_x} = $exit->x;
		1728	$rmp->{origin_y} = $exit->y;
		1729	}
		1730
		1731	$rmp->{random_seed} ||= $exit->random_seed;
		1732
		1733	my $data = cf::to_json $rmp;
		1734	my $md5 = Digest::MD5::md5_hex $data;
		1735
		1736	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1737	aio_write $fh, 0, (length $data), $data, 0;
		1738
		1739	$exit->slaying ("?random/$md5");
		1740	$exit->msg (undef);
		1741	}
		1742	}
		1743
		1744	sub cf::object::player::enter_exit {
627	my ($self, $id, %msg) = @_;	1745	my ($self, $exit) = @_;
628		1746
629	$msg{msgid} = $id;	1747	return unless $self->type == cf::PLAYER;
630		1748
631	$self->send ("ext " . to_json \%msg);	1749	$self->enter_link;
632	}
633		1750
634	#############################################################################	1751	(async {
635	# map scripting support	1752	$self->deactivate_recursive; # just to be sure
		1753	unless (eval {
		1754	prepare_random_map $exit
		1755	if $exit->slaying eq "/!";
636		1756
		1757	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1758	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1759
		1760	1;
		1761	}) {
		1762	$self->message ("Something went wrong deep within the crossfire server. "
		1763	. "I'll try to bring you back to the map you were before. "
		1764	. "Please report this to the dungeon master",
		1765	cf::NDI_UNIQUE | cf::NDI_RED);
		1766
		1767	warn "ERROR in enter_exit: $@";
		1768	$self->leave_link;
		1769	}
		1770	})->prio (1);
		1771	}
		1772
		1773	=head3 cf::client
		1774
		1775	=over 4
		1776
		1777	=item $client->send_drawinfo ($text, $flags)
		1778
		1779	Sends a drawinfo packet to the client. Circumvents output buffering so
		1780	should not be used under normal circumstances.
		1781
		1782	=cut
		1783
		1784	sub cf::client::send_drawinfo {
		1785	my ($self, $text, $flags) = @_;
		1786
		1787	utf8::encode $text;
		1788	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1789	}
		1790
		1791
		1792	=item $success = $client->query ($flags, "text", \&cb)
		1793
		1794	Queues a query to the client, calling the given callback with
		1795	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1796	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1797
		1798	Queries can fail, so check the return code. Or don't, as queries will become
		1799	reliable at some point in the future.
		1800
		1801	=cut
		1802
		1803	sub cf::client::query {
		1804	my ($self, $flags, $text, $cb) = @_;
		1805
		1806	return unless $self->state == ST_PLAYING
		1807	|| $self->state == ST_SETUP
		1808	|| $self->state == ST_CUSTOM;
		1809
		1810	$self->state (ST_CUSTOM);
		1811
		1812	utf8::encode $text;
		1813	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1814
		1815	$self->send_packet ($self->{query_queue}[0][0])
		1816	if @{ $self->{query_queue} } == 1;
		1817	}
		1818
		1819	cf::client->attach (
		1820	on_reply => sub {
		1821	my ($ns, $msg) = @_;
		1822
		1823	# this weird shuffling is so that direct followup queries
		1824	# get handled first
		1825	my $queue = delete $ns->{query_queue}
		1826	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1827
		1828	(shift @$queue)->[1]->($msg);
		1829
		1830	push @{ $ns->{query_queue} }, @$queue;
		1831
		1832	if (@{ $ns->{query_queue} } == @$queue) {
		1833	if (@$queue) {
		1834	$ns->send_packet ($ns->{query_queue}[0][0]);
		1835	} else {
		1836	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1837	}
		1838	}
		1839	},
		1840	);
		1841
		1842	=item $client->async (\&cb)
		1843
		1844	Create a new coroutine, running the specified callback. The coroutine will
		1845	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1846	or loss of connection).
		1847
		1848	=cut
		1849
		1850	sub cf::client::async {
		1851	my ($self, $cb) = @_;
		1852
		1853	my $coro = &Coro::async ($cb);
		1854
		1855	$coro->on_destroy (sub {
		1856	delete $self->{_coro}{$coro+0};
		1857	});
		1858
		1859	$self->{_coro}{$coro+0} = $coro;
		1860
		1861	$coro
		1862	}
		1863
		1864	cf::client->attach (
		1865	on_destroy => sub {
		1866	my ($ns) = @_;
		1867
		1868	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1869	},
		1870	);
		1871
		1872	=back
		1873
		1874
		1875	=head2 SAFE SCRIPTING
		1876
		1877	Functions that provide a safe environment to compile and execute
		1878	snippets of perl code without them endangering the safety of the server
		1879	itself. Looping constructs, I/O operators and other built-in functionality
		1880	is not available in the safe scripting environment, and the number of
		1881	functions and methods that can be called is greatly reduced.
		1882
		1883	=cut
		1884
637	our $safe = new Safe "ext";	1885	our $safe = new Safe "safe";
638	our $safe_hole = new Safe::Hole;	1886	our $safe_hole = new Safe::Hole;
639		1887
640	$SIG{FPE} = 'IGNORE';	1888	$SIG{FPE} = 'IGNORE';
641		1889
642	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1890	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
643		1891
644	# here we export the classes and methods available to script code	1892	# here we export the classes and methods available to script code
645		1893
		1894	=pod
		1895
		1896	The following fucntions and emthods are available within a safe environment:
		1897
		1898	cf::object contr pay_amount pay_player map
		1899	cf::object::player player
		1900	cf::player peaceful
		1901	cf::map trigger
		1902
		1903	=cut
		1904
646	for (	1905	for (
647	["cf::object" => qw(contr pay_amount pay_player)],	1906	["cf::object" => qw(contr pay_amount pay_player map)],
648	["cf::object::player" => qw(player)],	1907	["cf::object::player" => qw(player)],
649	["cf::player" => qw(peaceful)],	1908	["cf::player" => qw(peaceful)],
		1909	["cf::map" => qw(trigger)],
650	) {	1910	) {
651	no strict 'refs';	1911	no strict 'refs';
652	my ($pkg, @funs) = @$_;	1912	my ($pkg, @funs) = @$_;
653	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1913	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
654	for @funs;	1914	for @funs;
655	}	1915	}
		1916
		1917	=over 4
		1918
		1919	=item @retval = safe_eval $code, [var => value, ...]
		1920
		1921	Compiled and executes the given perl code snippet. additional var/value
		1922	pairs result in temporary local (my) scalar variables of the given name
		1923	that are available in the code snippet. Example:
		1924
		1925	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1926
		1927	=cut
656		1928
657	sub safe_eval($;@) {	1929	sub safe_eval($;@) {
658	my ($code, %vars) = @_;	1930	my ($code, %vars) = @_;
659		1931
660	my $qcode = $code;	1932	my $qcode = $code;
661	$qcode =~ s/"/‟/g; # not allowed in #line filenames	1933	$qcode =~ s/"/‟/g; # not allowed in #line filenames
662	$qcode =~ s/\n/\\n/g;	1934	$qcode =~ s/\n/\\n/g;
663		1935
664	local $_;	1936	local $_;
665	local @ext::cf::_safe_eval_args = values %vars;	1937	local @safe::cf::_safe_eval_args = values %vars;
666		1938
667	$code =	1939	my $eval =
668	"do {\n"	1940	"do {\n"
669	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	1941	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
670	. "#line 0 \"{$qcode}\"\n"	1942	. "#line 0 \"{$qcode}\"\n"
671	. $code	1943	. $code
672	. "\n}"	1944	. "\n}"
673	;	1945	;
674		1946
675	sub_generation_inc;	1947	sub_generation_inc;
676	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	1948	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
677	sub_generation_inc;	1949	sub_generation_inc;
678		1950
		1951	if ($@) {
		1952	warn "$@";
		1953	warn "while executing safe code '$code'\n";
		1954	warn "with arguments " . (join " ", %vars) . "\n";
		1955	}
		1956
679	wantarray ? @res : $res[0]	1957	wantarray ? @res : $res[0]
680	}	1958	}
		1959
		1960	=item cf::register_script_function $function => $cb
		1961
		1962	Register a function that can be called from within map/npc scripts. The
		1963	function should be reasonably secure and should be put into a package name
		1964	like the extension.
		1965
		1966	Example: register a function that gets called whenever a map script calls
		1967	C<rent::overview>, as used by the C<rent> extension.
		1968
		1969	cf::register_script_function "rent::overview" => sub {
		1970	...
		1971	};
		1972
		1973	=cut
681		1974
682	sub register_script_function {	1975	sub register_script_function {
683	my ($fun, $cb) = @_;	1976	my ($fun, $cb) = @_;
684		1977
685	no strict 'refs';	1978	no strict 'refs';
686	*{"ext::$fun"} = $safe_hole->wrap ($cb);	1979	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1980	}
		1981
		1982	=back
		1983
		1984	=cut
		1985
		1986	#############################################################################
		1987
		1988	=head2 EXTENSION DATABASE SUPPORT
		1989
		1990	Crossfire maintains a very simple database for extension use. It can
		1991	currently store anything that can be serialised using Storable, which
		1992	excludes objects.
		1993
		1994	The parameter C<$family> should best start with the name of the extension
		1995	using it, it should be unique.
		1996
		1997	=over 4
		1998
		1999	=item $hashref = cf::db_get $family
		2000
		2001	Return a hashref for use by the extension C<$family>, which can be
		2002	modified. After modifications, you have to call C<cf::db_dirty> or
		2003	C<cf::db_sync>.
		2004
		2005	=item $value = cf::db_get $family => $key
		2006
		2007	Returns a single value from the database
		2008
		2009	=item cf::db_put $family => $hashref
		2010
		2011	Stores the given family hashref into the database. Updates are delayed, if
		2012	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2013
		2014	=item cf::db_put $family => $key => $value
		2015
		2016	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2017	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2018
		2019	=item cf::db_dirty
		2020
		2021	Marks the database as dirty, to be updated at a later time.
		2022
		2023	=item cf::db_sync
		2024
		2025	Immediately write the database to disk I<if it is dirty>.
		2026
		2027	=cut
		2028
		2029	our $DB;
		2030
		2031	{
		2032	my $path = cf::localdir . "/database.pst";
		2033
		2034	sub db_load() {
		2035	$DB = stat $path ? Storable::retrieve $path : { };
		2036	}
		2037
		2038	my $pid;
		2039
		2040	sub db_save() {
		2041	waitpid $pid, 0 if $pid;
		2042	if (0 == ($pid = fork)) {
		2043	$DB->{_meta}{version} = 1;
		2044	Storable::nstore $DB, "$path~";
		2045	rename "$path~", $path;
		2046	cf::_exit 0 if defined $pid;
		2047	}
		2048	}
		2049
		2050	my $dirty;
		2051
		2052	sub db_sync() {
		2053	db_save if $dirty;
		2054	undef $dirty;
		2055	}
		2056
		2057	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2058	db_sync;
		2059	});
		2060
		2061	sub db_dirty() {
		2062	$dirty = 1;
		2063	$idle->start;
		2064	}
		2065
		2066	sub db_get($;$) {
		2067	@_ >= 2
		2068	? $DB->{$_[0]}{$_[1]}
		2069	: ($DB->{$_[0]} ||= { })
		2070	}
		2071
		2072	sub db_put($$;$) {
		2073	if (@_ >= 3) {
		2074	$DB->{$_[0]}{$_[1]} = $_[2];
		2075	} else {
		2076	$DB->{$_[0]} = $_[1];
		2077	}
		2078	db_dirty;
		2079	}
		2080
		2081	cf::global->attach (
		2082	prio => 10000,
		2083	on_cleanup => sub {
		2084	db_sync;
		2085	},
		2086	);
687	}	2087	}
688		2088
689	#############################################################################	2089	#############################################################################
690	# the server's main()	2090	# the server's main()
691		2091
		2092	sub cfg_load {
		2093	open my $fh, "<:utf8", cf::confdir . "/config"
		2094	or return;
		2095
		2096	local $/;
		2097	*CFG = YAML::Syck::Load <$fh>;
		2098
		2099	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2100
		2101	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2102	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2103
		2104	if (exists $CFG{mlockall}) {
		2105	eval {
		2106	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2107	and die "WARNING: m(un)lockall failed: $!\n";
		2108	};
		2109	warn $@ if $@;
		2110	}
		2111	}
		2112
692	sub main {	2113	sub main {
		2114	# we must not ever block the main coroutine
		2115	local $Coro::idle = sub {
		2116	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2117	async { Event::one_event };
		2118	};
		2119
		2120	cfg_load;
		2121	db_load;
		2122	load_extensions;
693	Event::loop;	2123	Event::loop;
694	}	2124	}
695		2125
696	#############################################################################	2126	#############################################################################
697	# initialisation	2127	# initialisation
698		2128
		2129	sub reload() {
		2130	# can/must only be called in main
		2131	if ($Coro::current != $Coro::main) {
		2132	warn "can only reload from main coroutine\n";
		2133	return;
		2134	}
		2135
		2136	warn "reloading...";
		2137
		2138	my $guard = freeze_mainloop;
		2139	cf::emergency_save;
		2140
		2141	eval {
		2142	# if anything goes wrong in here, we should simply crash as we already saved
		2143
		2144	# cancel all watchers
		2145	for (Event::all_watchers) {
		2146	$_->cancel if $_->data & WF_AUTOCANCEL;
		2147	}
		2148
		2149	# cancel all extension coros
		2150	$_->cancel for values %EXT_CORO;
		2151	%EXT_CORO = ();
		2152
		2153	# unload all extensions
		2154	for (@exts) {
		2155	warn "unloading <$_>";
		2156	unload_extension $_;
		2157	}
		2158
		2159	# unload all modules loaded from $LIBDIR
		2160	while (my ($k, $v) = each %INC) {
		2161	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2162
		2163	warn "removing <$k>";
		2164	delete $INC{$k};
		2165
		2166	$k =~ s/\.pm$//;
		2167	$k =~ s/\//::/g;
		2168
		2169	if (my $cb = $k->can ("unload_module")) {
		2170	$cb->();
		2171	}
		2172
		2173	Symbol::delete_package $k;
		2174	}
		2175
		2176	# sync database to disk
		2177	cf::db_sync;
		2178	IO::AIO::flush;
		2179
		2180	# get rid of safe::, as good as possible
		2181	Symbol::delete_package "safe::$_"
		2182	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2183
		2184	# remove register_script_function callbacks
		2185	# TODO
		2186
		2187	# unload cf.pm "a bit"
		2188	delete $INC{"cf.pm"};
		2189
		2190	# don't, removes xs symbols, too,
		2191	# and global variables created in xs
		2192	#Symbol::delete_package __PACKAGE__;
		2193
		2194	# reload cf.pm
		2195	warn "reloading cf.pm";
		2196	require cf;
		2197	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2198
		2199	# load config and database again
		2200	cf::cfg_load;
		2201	cf::db_load;
		2202
		2203	# load extensions
		2204	warn "load extensions";
		2205	cf::load_extensions;
		2206
		2207	# reattach attachments to objects
		2208	warn "reattach";
		2209	_global_reattach;
		2210	reattach $_ for values %MAP;
		2211	};
		2212
		2213	if ($@) {
		2214	warn $@;
		2215	warn "error while reloading, exiting.";
		2216	exit 1;
		2217	}
		2218
		2219	warn "reloaded successfully";
		2220	};
		2221
		2222	#############################################################################
		2223
		2224	unless ($LINK_MAP) {
		2225	$LINK_MAP = cf::map::new;
		2226
		2227	$LINK_MAP->width (41);
		2228	$LINK_MAP->height (41);
		2229	$LINK_MAP->alloc;
		2230	$LINK_MAP->path ("{link}");
		2231	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2232	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2233
		2234	# dirty hack because... archetypes are not yet loaded
		2235	Event->timer (
		2236	after => 10,
		2237	cb => sub {
		2238	$_[0]->w->cancel;
		2239
		2240	# provide some exits "home"
		2241	my $exit = cf::object::new "exit";
		2242
		2243	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2244	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2245	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2246
		2247	$LINK_MAP->insert ($exit->clone, 19, 19);
		2248	$LINK_MAP->insert ($exit->clone, 19, 20);
		2249	$LINK_MAP->insert ($exit->clone, 19, 21);
		2250	$LINK_MAP->insert ($exit->clone, 20, 19);
		2251	$LINK_MAP->insert ($exit->clone, 20, 21);
		2252	$LINK_MAP->insert ($exit->clone, 21, 19);
		2253	$LINK_MAP->insert ($exit->clone, 21, 20);
		2254	$LINK_MAP->insert ($exit->clone, 21, 21);
		2255
		2256	$exit->destroy;
		2257	});
		2258
		2259	$LINK_MAP->{deny_save} = 1;
		2260	$LINK_MAP->{deny_reset} = 1;
		2261
		2262	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2263	}
		2264
699	register "<global>", __PACKAGE__;	2265	register "<global>", __PACKAGE__;
700		2266
		2267	register_command "reload" => sub {
		2268	my ($who, $arg) = @_;
		2269
		2270	if ($who->flag (FLAG_WIZ)) {
		2271	$who->message ("start of reload.");
		2272	reload;
		2273	$who->message ("end of reload.");
		2274	}
		2275	};
		2276
701	unshift @INC, $LIBDIR;	2277	unshift @INC, $LIBDIR;
702		2278
703	load_extensions;
704
705	$TICK_WATCHER = Event->timer (	2279	$TICK_WATCHER = Event->timer (
		2280	reentrant => 0,
706	prio => 1,	2281	prio => 0,
707	at => $NEXT_TICK || 1,	2282	at => $NEXT_TICK || $TICK,
		2283	data => WF_AUTOCANCEL,
708	cb => sub {	2284	cb => sub {
709	cf::server_tick; # one server iteration	2285	cf::server_tick; # one server iteration
710		2286	$RUNTIME += $TICK;
711	my $NOW = Event::time;
712	$NEXT_TICK += $TICK;	2287	$NEXT_TICK += $TICK;
713		2288
714	# if we are delayed by four ticks, skip them all	2289	# if we are delayed by four ticks or more, skip them all
715	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2290	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
716		2291
717	$TICK_WATCHER->at ($NEXT_TICK);	2292	$TICK_WATCHER->at ($NEXT_TICK);
718	$TICK_WATCHER->start;	2293	$TICK_WATCHER->start;
719	},	2294	},
720	);	2295	);
721		2296
		2297	IO::AIO::max_poll_time $TICK * 0.2;
		2298
		2299	Event->io (
		2300	fd => IO::AIO::poll_fileno,
		2301	poll => 'r',
		2302	prio => 5,
		2303	data => WF_AUTOCANCEL,
		2304	cb => \&IO::AIO::poll_cb,
		2305	);
		2306
		2307	Event->timer (
		2308	data => WF_AUTOCANCEL,
		2309	after => 0,
		2310	interval => 10,
		2311	cb => sub {
		2312	(Coro::unblock_sub {
		2313	write_runtime
		2314	or warn "ERROR: unable to write runtime file: $!";
		2315	})->();
		2316	},
		2317	);
		2318
		2319	END { cf::emergency_save }
		2320
722	1	2321	1
723		2322

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