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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.41 by root, Fri Aug 25 15:25:12 2006 UTC vs.
Revision 1.130 by root, Thu Jan 4 00:08:08 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 2.31 ();
		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 (2); # 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 %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		78
		79	#############################################################################
		80
		81	=head2 GLOBAL VARIABLES
		82
		83	=over 4
		84
		85	=item $cf::UPTIME
		86
		87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
		93
		94	=item $cf::LIBDIR
		95
		96	The perl library directory, where extensions and cf-specific modules can
		97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
		102
		103	=item $cf::TICK
		104
		105	The interval between server ticks, in seconds.
		106
		107	=item %cf::CFG
		108
		109	Configuration for the server, loaded from C</etc/crossfire/config>, or
		110	from wherever your confdir points to.
		111
		112	=back
		113
		114	=cut
26		115
27	BEGIN {	116	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
32	$msg .= "\n"	121	$msg .= "\n"
33	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
34		123
35	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
37	};	125	};
38	}	126	}
39		127
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
41		129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
42	# generate property mutators	130	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
43	sub prop_gen {	131	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
44	my ($prefix, $class) = @_;	132	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
45
46	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	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@safe::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78		134
79	# we bless all objects into (empty) derived classes to force a method lookup	135	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	136	# 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)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
82	no strict 'refs';	144	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	146	}
85		147
86	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
88	};	150	};
89		151
90	my %ext_pkg;	152	my %ext_pkg;
91	my @exts;	153	my @exts;
92	my @hook;	154	my @hook;
93	my %command;	155
94	my %extcmd;	156	=head2 UTILITY FUNCTIONS
		157
		158	=over 4
		159
		160	=cut
		161
		162	use JSON::Syck (); # TODO# replace by JSON::PC once working
		163
		164	=item $ref = cf::from_json $json
		165
		166	Converts a JSON string into the corresponding perl data structure.
		167
		168	=cut
		169
		170	sub from_json($) {
		171	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		172	JSON::Syck::Load $_[0]
		173	}
		174
		175	=item $json = cf::to_json $ref
		176
		177	Converts a perl data structure into its JSON representation.
		178
		179	=cut
		180
		181	sub to_json($) {
		182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		183	JSON::Syck::Dump $_[0]
		184	}
		185
		186	=item my $guard = cf::guard { BLOCK }
		187
		188	Run the given callback when the guard object gets destroyed (useful for
		189	coroutine cancellations).
		190
		191	You can call C<< ->cancel >> on the guard object to stop the block from
		192	being executed.
		193
		194	=cut
		195
		196	sub guard(&) {
		197	bless \(my $cb = $_[0]), cf::guard::;
		198	}
		199
		200	sub cf::guard::cancel {
		201	${$_[0]} = sub { };
		202	}
		203
		204	sub cf::guard::DESTROY {
		205	${$_[0]}->();
		206	}
		207
		208	=item cf::lock_wait $string
		209
		210	Wait until the given lock is available. See cf::lock_acquire.
		211
		212	=item my $lock = cf::lock_acquire $string
		213
		214	Wait until the given lock is available and then acquires it and returns
		215	a guard object. If the guard object gets destroyed (goes out of scope,
		216	for example when the coroutine gets canceled), the lock is automatically
		217	returned.
		218
		219	Lock names should begin with a unique identifier (for example, find_map
		220	uses map_find and load_map uses map_load).
		221
		222	=cut
		223
		224	our %LOCK;
		225
		226	sub lock_wait($) {
		227	my ($key) = @_;
		228
		229	# wait for lock, if any
		230	while ($LOCK{$key}) {
		231	push @{ $LOCK{$key} }, $Coro::current;
		232	Coro::schedule;
		233	}
		234	}
		235
		236	sub lock_acquire($) {
		237	my ($key) = @_;
		238
		239	# wait, to be sure we are not locked
		240	lock_wait $key;
		241
		242	$LOCK{$key} = [];
		243
		244	cf::guard {
		245	# wake up all waiters, to be on the safe side
		246	$_->ready for @{ delete $LOCK{$key} };
		247	}
		248	}
		249
		250	=item cf::async { BLOCK }
		251
		252	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		253	error instead of exiting the server in case of a problem.
		254
		255	=cut
		256
		257	sub async(&) {
		258	my ($cb) = @_;
		259
		260	Coro::async {
		261	eval { $cb->() };
		262	warn $@ if $@;
		263	}
		264	}
		265
		266	=item cf::sync_job { BLOCK }
		267
		268	The design of crossfire+ requires that the main coro ($Coro::main) is
		269	always able to handle events or runnable, as crossfire+ is only partly
		270	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		271
		272	If it must be done, put the blocking parts into C<sync_job>. This will run
		273	the given BLOCK in another coroutine while waiting for the result. The
		274	server will be frozen during this time, so the block should either finish
		275	fast or be very important.
		276
		277	=cut
		278
		279	sub sync_job(&) {
		280	my ($job) = @_;
		281
		282	if ($Coro::current == $Coro::main) {
		283	# this is the main coro, too bad, we have to block
		284	# till the operation succeeds, freezing the server :/
		285
		286	# TODO: use suspend/resume instead
		287	# (but this is cancel-safe)
		288	local $FREEZE = 1;
		289
		290	my $busy = 1;
		291	my @res;
		292
		293	(Coro::async {
		294	@res = eval { $job->() };
		295	warn $@ if $@;
		296	undef $busy;
		297	})->prio (Coro::PRIO_MAX);
		298
		299	while ($busy) {
		300	Coro::cede_notself;
		301	Event::one_event unless Coro::nready;
		302	}
		303
		304	wantarray ? @res : $res[0]
		305	} else {
		306	# we are in another coroutine, how wonderful, everything just works
		307
		308	$job->()
		309	}
		310	}
		311
		312	=item $coro = cf::coro { BLOCK }
		313
		314	Creates and returns a new coro. This coro is automcatially being canceled
		315	when the extension calling this is being unloaded.
		316
		317	=cut
		318
		319	sub coro(&) {
		320	my $cb = shift;
		321
		322	my $coro = &cf::async ($cb);
		323
		324	$coro->on_destroy (sub {
		325	delete $EXT_CORO{$coro+0};
		326	});
		327	$EXT_CORO{$coro+0} = $coro;
		328
		329	$coro
		330	}
		331
		332	sub write_runtime {
		333	my $runtime = cf::localdir . "/runtime";
		334
		335	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		336	or return;
		337
		338	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		339	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		340	and return;
		341
		342	aio_fsync $fh
		343	and return;
		344
		345	close $fh
		346	or return;
		347
		348	aio_rename "$runtime~", $runtime
		349	and return;
		350
		351	1
		352	}
		353
		354	=back
		355
		356	=cut
95		357
96	#############################################################################	358	#############################################################################
97	# "new" plug-in system
98		359
99	=item cf::object::attach ... # NYI	360	package cf::path;
100		361
101	=item cf::attach_global ...	362	sub new {
		363	my ($class, $path, $base) = @_;
102		364
103	=item cf::attach_to_type ...	365	$path = $path->as_string if ref $path;
104		366
105	=item cf::attach_to_objects ...	367	my $self = bless { }, $class;
106		368
107	=item cf::attach_to_players ...	369	# {... are special paths that are not touched
		370	# ?xxx/... are special absolute paths
		371	# ?random/... random maps
		372	# /! non-realised random map exit
		373	# /... normal maps
		374	# ~/... per-player maps without a specific player (DO NOT USE)
		375	# ~user/... per-player map of a specific user
108		376
109	=item cf::attach_to_maps ...	377	if ($path =~ /^{/) {
		378	# fine as it is
		379	} elsif ($path =~ s{^\?random/}{}) {
		380	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		381	$self->{random} = cf::from_json $data;
		382	} else {
		383	if ($path =~ s{^~([^/]+)?}{}) {
		384	$self->{user_rel} = 1;
110		385
111	prio => $number, # lower is earlier	386	if (defined $1) {
112	on_xxx => \&cb,	387	$self->{user} = $1;
		388	} elsif ($base =~ m{^~([^/]+)/}) {
		389	$self->{user} = $1;
		390	} else {
		391	warn "cannot resolve user-relative path without user <$path,$base>\n";
		392	}
		393	} elsif ($path =~ /^\//) {
		394	# already absolute
		395	} else {
		396	$base =~ s{[^/]+/?$}{};
		397	return $class->new ("$base/$path");
		398	}
		399
		400	for ($path) {
		401	redo if s{/\.?/}{/};
		402	redo if s{/[^/]+/\.\./}{/};
		403	}
		404	}
		405
		406	$self->{path} = $path;
		407
		408	$self
		409	}
		410
		411	# the name / primary key / in-game path
		412	sub as_string {
		413	my ($self) = @_;
		414
		415	$self->{user_rel} ? "~$self->{user}$self->{path}"
		416	: $self->{random} ? "?random/$self->{path}"
		417	: $self->{path}
		418	}
		419
		420	# the displayed name, this is a one way mapping
		421	sub visible_name {
		422	my ($self) = @_;
		423
		424	# if (my $rmp = $self->{random}) {
		425	# # todo: be more intelligent about this
		426	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		427	# } else {
		428	$self->as_string
		429	# }
		430	}
		431
		432	# escape the /'s in the path
		433	sub _escaped_path {
		434	# ∕ is U+2215
		435	(my $path = $_[0]{path}) =~ s/\//∕/g;
		436	$path
		437	}
		438
		439	# the original (read-only) location
		440	sub load_path {
		441	my ($self) = @_;
		442
		443	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		444	}
		445
		446	# the temporary/swap location
		447	sub save_path {
		448	my ($self) = @_;
		449
		450	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		451	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		452	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		453	}
		454
		455	# the unique path, might be eq to save_path
		456	sub uniq_path {
		457	my ($self) = @_;
		458
		459	$self->{user_rel} || $self->{random}
		460	? undef
		461	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		462	}
		463
		464	# return random map parameters, or undef
		465	sub random_map_params {
		466	my ($self) = @_;
		467
		468	$self->{random}
		469	}
		470
		471	# this is somewhat ugly, but style maps do need special treatment
		472	sub is_style_map {
		473	$_[0]{path} =~ m{^/styles/}
		474	}
		475
		476	package cf;
		477
		478	#############################################################################
		479
		480	=head2 ATTACHABLE OBJECTS
		481
		482	Many objects in crossfire are so-called attachable objects. That means you can
		483	attach callbacks/event handlers (a collection of which is called an "attachment")
		484	to it. All such attachable objects support the following methods.
		485
		486	In the following description, CLASS can be any of C<global>, C<object>
		487	C<player>, C<client> or C<map> (i.e. the attachable objects in
		488	crossfire+).
		489
		490	=over 4
		491
		492	=item $attachable->attach ($attachment, key => $value...)
		493
		494	=item $attachable->detach ($attachment)
		495
		496	Attach/detach a pre-registered attachment to a specific object and give it
		497	the specified key/value pairs as arguments.
		498
		499	Example, attach a minesweeper attachment to the given object, making it a
		500	10x10 minesweeper game:
		501
		502	$obj->attach (minesweeper => width => 10, height => 10);
		503
		504	=item $bool = $attachable->attached ($name)
		505
		506	Checks wether the named attachment is currently attached to the object.
		507
		508	=item cf::CLASS->attach ...
		509
		510	=item cf::CLASS->detach ...
		511
		512	Define an anonymous attachment and attach it to all objects of the given
		513	CLASS. See the next function for an explanation of its arguments.
		514
		515	You can attach to global events by using the C<cf::global> class.
		516
		517	Example, log all player logins:
		518
		519	cf::player->attach (
		520	on_login => sub {
		521	my ($pl) = @_;
		522	...
		523	},
		524	);
		525
		526	Example, attach to the jeweler skill:
		527
		528	cf::object->attach (
		529	type => cf::SKILL,
		530	subtype => cf::SK_JEWELER,
		531	on_use_skill => sub {
		532	my ($sk, $ob, $part, $dir, $msg) = @_;
		533	...
		534	},
		535	);
		536
		537	=item cf::CLASS::attachment $name, ...
		538
		539	Register an attachment by C<$name> through which attachable objects of the
		540	given CLASS can refer to this attachment.
		541
		542	Some classes such as crossfire maps and objects can specify attachments
		543	that are attached at load/instantiate time, thus the need for a name.
		544
		545	These calls expect any number of the following handler/hook descriptions:
		546
		547	=over 4
		548
		549	=item prio => $number
		550
		551	Set the priority for all following handlers/hooks (unless overwritten
		552	by another C<prio> setting). Lower priority handlers get executed
		553	earlier. The default priority is C<0>, and many built-in handlers are
		554	registered at priority C<-1000>, so lower priorities should not be used
		555	unless you know what you are doing.
		556
		557	=item type => $type
		558
		559	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		560	given type of objects only (the additional parameter C<subtype> can be
		561	used to further limit to the given subtype).
		562
		563	=item on_I<event> => \&cb
		564
		565	Call the given code reference whenever the named event happens (event is
		566	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		567	handlers are recognised generally depends on the type of object these
		568	handlers attach to).
		569
		570	See F<include/eventinc.h> for the full list of events supported, and their
		571	class.
		572
113	package => package::,	573	=item package => package::
		574
		575	Look for sub functions of the name C<< on_I<event> >> in the given
		576	package and register them. Only handlers for eevents supported by the
		577	object/class are recognised.
		578
		579	=back
		580
		581	Example, define an attachment called "sockpuppet" that calls the given
		582	event handler when a monster attacks:
		583
		584	cf::object::attachment sockpuppet =>
		585	on_skill_attack => sub {
		586	my ($self, $victim) = @_;
		587	...
		588	}
		589	}
		590
		591	=item $attachable->valid
		592
		593	Just because you have a perl object does not mean that the corresponding
		594	C-level object still exists. If you try to access an object that has no
		595	valid C counterpart anymore you get an exception at runtime. This method
		596	can be used to test for existence of the C object part without causing an
		597	exception.
114		598
115	=cut	599	=cut
116		600
117	# the following variables are defined in .xs and must not be re-created	601	# the following variables are defined in .xs and must not be re-created
118	our @CB_GLOBAL = (); # registry for all global events	602	our @CB_GLOBAL = (); # registry for all global events
119	our @CB_OBJECT = ();	603	our @CB_ATTACHABLE = (); # registry for all attachables
		604	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
120	our @CB_PLAYER = ();	605	our @CB_PLAYER = ();
		606	our @CB_CLIENT = ();
121	our @CB_TYPE = (); # registry for type (cf-object class) based events	607	our @CB_TYPE = (); # registry for type (cf-object class) based events
122	our @CB_MAP = ();	608	our @CB_MAP = ();
123		609
		610	my %attachment;
		611
124	sub _attach_cb($\%$$$) {	612	sub _attach_cb($$$$) {
125	my ($registry, $undo, $event, $prio, $cb) = @_;	613	my ($registry, $event, $prio, $cb) = @_;
126		614
127	use sort 'stable';	615	use sort 'stable';
128		616
129	$cb = [$prio, $cb];	617	$cb = [$prio, $cb];
130		618
131	@{$registry->[$event]} = sort	619	@{$registry->[$event]} = sort
132	{ $a->[0] cmp $b->[0] }	620	{ $a->[0] cmp $b->[0] }
133	@{$registry->[$event] || []}, $cb;	621	@{$registry->[$event] || []}, $cb;
134
135	push @{$undo->{cb}}, [$event, $cb];
136	}	622	}
		623
		624	# hack
		625	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
137		626
138	# attach handles attaching event callbacks	627	# attach handles attaching event callbacks
139	# the only thing the caller has to do is pass the correct	628	# the only thing the caller has to do is pass the correct
140	# registry (== where the callback attaches to).	629	# registry (== where the callback attaches to).
141	sub _attach(\@$\@) {	630	sub _attach {
142	my ($registry, $klass, $arg) = @_;	631	my ($registry, $klass, @arg) = @_;
143		632
		633	my $object_type;
144	my $prio = 0;	634	my $prio = 0;
145
146	my %undo = (
147	registry => $registry,
148	cb => [],
149	);
150
151	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	635	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
152		636
		637	#TODO: get rid of this hack
		638	if ($attachable_klass{$klass}) {
		639	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		640	}
		641
153	while (@$arg) {	642	while (@arg) {
154	my $type = shift @$arg;	643	my $type = shift @arg;
155		644
156	if ($type eq "prio") {	645	if ($type eq "prio") {
157	$prio = shift @$arg;	646	$prio = shift @arg;
		647
		648	} elsif ($type eq "type") {
		649	$object_type = shift @arg;
		650	$registry = $CB_TYPE[$object_type] ||= [];
		651
		652	} elsif ($type eq "subtype") {
		653	defined $object_type or Carp::croak "subtype specified without type";
		654	my $object_subtype = shift @arg;
		655	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
158		656
159	} elsif ($type eq "package") {	657	} elsif ($type eq "package") {
160	my $pkg = shift @$arg;	658	my $pkg = shift @arg;
161		659
162	while (my ($name, $id) = each %cb_id) {	660	while (my ($name, $id) = each %cb_id) {
163	if (my $cb = $pkg->can ($name)) {	661	if (my $cb = $pkg->can ($name)) {
164	_attach_cb $registry, %undo, $id, $prio, $cb;	662	_attach_cb $registry, $id, $prio, $cb;
165	}	663	}
166	}	664	}
167		665
168	} elsif (exists $cb_id{$type}) {	666	} elsif (exists $cb_id{$type}) {
169	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;	667	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
170		668
171	} elsif (ref $type) {	669	} elsif (ref $type) {
172	warn "attaching objects not supported, ignoring.\n";	670	warn "attaching objects not supported, ignoring.\n";
173		671
174	} else {	672	} else {
175	shift @$arg;	673	shift @arg;
176	warn "attach argument '$type' not supported, ignoring.\n";	674	warn "attach argument '$type' not supported, ignoring.\n";
177	}	675	}
178	}	676	}
179
180	\%undo
181	}	677	}
182		678
183	sub cf::object::attach {	679	sub _object_attach {
184	die;	680	my ($obj, $name, %arg) = @_;
185	}
186		681
187	sub attach_global {	682	return if exists $obj->{_attachment}{$name};
188	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
189	}
190		683
191	sub attach_to_type {	684	if (my $attach = $attachment{$name}) {
192	my $type = shift;	685	my $registry = $obj->registry;
193	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
194	}
195		686
196	sub attach_to_objects {	687	for (@$attach) {
197	_attach @CB_OBJECT, KLASS_OBJECT, @_	688	my ($klass, @attach) = @$_;
198	}	689	_attach $registry, $klass, @attach;
		690	}
199		691
200	sub attach_to_players {	692	$obj->{$name} = \%arg;
201	_attach @CB_PLAYER, KLASS_PLAYER, @_	693	} else {
202	}	694	warn "object uses attachment '$name' that is not available, postponing.\n";
		695	}
203		696
204	sub attach_to_maps {	697	$obj->{_attachment}{$name} = undef;
205	_attach @CB_MAP, KLASS_MAP, @_	698	}
		699
		700	sub cf::attachable::attach {
		701	if (ref $_[0]) {
		702	_object_attach @_;
		703	} else {
		704	_attach shift->_attach_registry, @_;
		705	}
		706	};
		707
		708	# all those should be optimised
		709	sub cf::attachable::detach {
		710	my ($obj, $name) = @_;
		711
		712	if (ref $obj) {
		713	delete $obj->{_attachment}{$name};
		714	reattach ($obj);
		715	} else {
		716	Carp::croak "cannot, currently, detach class attachments";
		717	}
		718	};
		719
		720	sub cf::attachable::attached {
		721	my ($obj, $name) = @_;
		722
		723	exists $obj->{_attachment}{$name}
		724	}
		725
		726	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		727	eval "#line " . __LINE__ . " 'cf.pm'
		728	sub cf::\L$klass\E::_attach_registry {
		729	(\\\@CB_$klass, KLASS_$klass)
		730	}
		731
		732	sub cf::\L$klass\E::attachment {
		733	my \$name = shift;
		734
		735	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		736	}
		737	";
		738	die if $@;
206	}	739	}
207		740
208	our $override;	741	our $override;
		742	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
209		743
210	sub override() {	744	sub override {
211	$override = 1	745	$override = 1;
		746	@invoke_results = ();
212	}	747	}
213		748
214	sub invoke {	749	sub do_invoke {
215	my $event = shift;	750	my $event = shift;
216	my $callbacks = shift;	751	my $callbacks = shift;
217		752
		753	@invoke_results = ();
		754
218	local $override;	755	local $override;
219		756
220	for (@$callbacks) {	757	for (@$callbacks) {
221	eval { &{$_->[1]} };	758	eval { &{$_->[1]} };
222		759
223	if ($@) {	760	if ($@) {
224	warn "$@";	761	warn "$@";
225	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	762	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
226	override;	763	override;
227	}	764	}
228		765
229	return 1 if $override;	766	return 1 if $override;
230	}	767	}
231		768
232	0	769	0
233	}	770	}
234		771
		772	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		773
		774	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		775
		776	Generate an object-specific event with the given arguments.
		777
		778	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		779	removed in future versions), and there is no public API to access override
		780	results (if you must, access C<@cf::invoke_results> directly).
		781
		782	=back
		783
		784	=cut
		785
235	#############################################################################	786	#############################################################################
236	# old plug-in events	787	# object support
237		788
238	sub inject_event {	789	sub reattach {
239	my $extension = shift;	790	# basically do the same as instantiate, without calling instantiate
240	my $event_code = shift;	791	my ($obj) = @_;
241		792
242	my $cb = $hook[$event_code]{$extension}	793	my $registry = $obj->registry;
		794
		795	@$registry = ();
		796
		797	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		798
		799	for my $name (keys %{ $obj->{_attachment} || {} }) {
		800	if (my $attach = $attachment{$name}) {
		801	for (@$attach) {
		802	my ($klass, @attach) = @$_;
		803	_attach $registry, $klass, @attach;
		804	}
		805	} else {
		806	warn "object uses attachment '$name' that is not available, postponing.\n";
		807	}
		808	}
		809	}
		810
		811	cf::attachable->attach (
		812	prio => -1000000,
		813	on_instantiate => sub {
		814	my ($obj, $data) = @_;
		815
		816	$data = from_json $data;
		817
		818	for (@$data) {
		819	my ($name, $args) = @$_;
		820
		821	$obj->attach ($name, %{$args || {} });
		822	}
		823	},
		824	on_reattach => \&reattach,
		825	on_clone => sub {
		826	my ($src, $dst) = @_;
		827
		828	@{$dst->registry} = @{$src->registry};
		829
		830	%$dst = %$src;
		831
		832	%{$dst->{_attachment}} = %{$src->{_attachment}}
		833	if exists $src->{_attachment};
		834	},
		835	);
		836
		837	sub object_freezer_save {
		838	my ($filename, $rdata, $objs) = @_;
		839
		840	sync_job {
		841	if (length $$rdata) {
		842	warn sprintf "saving %s (%d,%d)\n",
		843	$filename, length $$rdata, scalar @$objs;
		844
		845	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		846	chmod SAVE_MODE, $fh;
		847	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		848	aio_fsync $fh;
		849	close $fh;
		850
		851	if (@$objs) {
		852	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		853	chmod SAVE_MODE, $fh;
		854	my $data = Storable::nfreeze { version => 1, objs => $objs };
		855	aio_write $fh, 0, (length $data), $data, 0;
		856	aio_fsync $fh;
		857	close $fh;
		858	aio_rename "$filename.pst~", "$filename.pst";
		859	}
		860	} else {
		861	aio_unlink "$filename.pst";
		862	}
		863
		864	aio_rename "$filename~", $filename;
		865	} else {
		866	warn "FATAL: $filename~: $!\n";
		867	}
		868	} else {
		869	aio_unlink $filename;
		870	aio_unlink "$filename.pst";
		871	}
		872	}
		873	}
		874
		875	sub object_freezer_as_string {
		876	my ($rdata, $objs) = @_;
		877
		878	use Data::Dumper;
		879
		880	$$rdata . Dumper $objs
		881	}
		882
		883	sub object_thawer_load {
		884	my ($filename) = @_;
		885
		886	my ($data, $av);
		887
		888	(aio_load $filename, $data) >= 0
243	or return;	889	or return;
244		890
245	&$cb	891	unless (aio_stat "$filename.pst") {
246	}	892	(aio_load "$filename.pst", $av) >= 0
247
248	sub inject_global_event {
249	my $event = shift;
250
251	my $cb = $hook[$event]
252	or return;	893	or return;
253		894	$av = eval { (Storable::thaw $av)->{objs} };
254	List::Util::max map &$_, values %$cb
255	}
256
257	sub inject_command {
258	my ($name, $obj, $params) = @_;
259
260	for my $cmd (@{ $command{$name} }) {
261	$cmd->[1]->($obj, $params);
262	}	895	}
263		896
264	-1	897	warn sprintf "loading %s (%d)\n",
		898	$filename, length $data, scalar @{$av || []};#d#
		899	return ($data, $av);
265	}	900	}
		901
		902	#############################################################################
		903	# command handling &c
		904
		905	=item cf::register_command $name => \&callback($ob,$args);
		906
		907	Register a callback for execution when the client sends the user command
		908	$name.
		909
		910	=cut
266		911
267	sub register_command {	912	sub register_command {
268	my ($name, $time, $cb) = @_;	913	my ($name, $cb) = @_;
269		914
270	my $caller = caller;	915	my $caller = caller;
271	#warn "registering command '$name/$time' to '$caller'";	916	#warn "registering command '$name/$time' to '$caller'";
272		917
273	push @{ $command{$name} }, [$time, $cb, $caller];	918	push @{ $COMMAND{$name} }, [$caller, $cb];
274	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
275	}	919	}
		920
		921	=item cf::register_extcmd $name => \&callback($pl,$packet);
		922
		923	Register a callbackf ro execution when the client sends an extcmd packet.
		924
		925	If the callback returns something, it is sent back as if reply was being
		926	called.
		927
		928	=cut
276		929
277	sub register_extcmd {	930	sub register_extcmd {
278	my ($name, $cb) = @_;	931	my ($name, $cb) = @_;
279		932
280	my $caller = caller;	933	my $caller = caller;
281	#warn "registering extcmd '$name' to '$caller'";	934	#warn "registering extcmd '$name' to '$caller'";
282		935
283	$extcmd{$name} = [$cb, $caller];	936	$EXTCMD{$name} = [$cb, $caller];
284	}	937	}
		938
		939	cf::player->attach (
		940	on_command => sub {
		941	my ($pl, $name, $params) = @_;
		942
		943	my $cb = $COMMAND{$name}
		944	or return;
		945
		946	for my $cmd (@$cb) {
		947	$cmd->[1]->($pl->ob, $params);
		948	}
		949
		950	cf::override;
		951	},
		952	on_extcmd => sub {
		953	my ($pl, $buf) = @_;
		954
		955	my $msg = eval { from_json $buf };
		956
		957	if (ref $msg) {
		958	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		959	if (my %reply = $cb->[0]->($pl, $msg)) {
		960	$pl->ext_reply ($msg->{msgid}, %reply);
		961	}
		962	}
		963	} else {
		964	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		965	}
		966
		967	cf::override;
		968	},
		969	);
285		970
286	sub register {	971	sub register {
287	my ($base, $pkg) = @_;	972	my ($base, $pkg) = @_;
288		973
289	for my $idx (0 .. $#PLUGIN_EVENT) {	974	#TODO
290	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
291	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
292	$hook[$idx]{$base} = $ref;
293	}
294	}
295	}	975	}
296		976
297	sub load_extension {	977	sub load_extension {
298	my ($path) = @_;	978	my ($path) = @_;
299		979
…		…
313	. "#line 1 \"$path\"\n{\n"	993	. "#line 1 \"$path\"\n{\n"
314	. (do { local $/; <$fh> })	994	. (do { local $/; <$fh> })
315	. "\n};\n1";	995	. "\n};\n1";
316		996
317	eval $source	997	eval $source
318	or die "$path: $@";	998	or die $@ ? "$path: $@\n"
		999	: "extension disabled.\n";
319		1000
320	push @exts, $pkg;	1001	push @exts, $pkg;
321	$ext_pkg{$base} = $pkg;	1002	$ext_pkg{$base} = $pkg;
322		1003
323	# no strict 'refs';	1004	# no strict 'refs';
…		…
330	my ($pkg) = @_;	1011	my ($pkg) = @_;
331		1012
332	warn "removing extension $pkg\n";	1013	warn "removing extension $pkg\n";
333		1014
334	# remove hooks	1015	# remove hooks
		1016	#TODO
335	for my $idx (0 .. $#PLUGIN_EVENT) {	1017	# for my $idx (0 .. $#PLUGIN_EVENT) {
336	delete $hook[$idx]{$pkg};	1018	# delete $hook[$idx]{$pkg};
337	}	1019	# }
338		1020
339	# remove commands	1021	# remove commands
340	for my $name (keys %command) {	1022	for my $name (keys %COMMAND) {
341	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1023	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
342		1024
343	if (@cb) {	1025	if (@cb) {
344	$command{$name} = \@cb;	1026	$COMMAND{$name} = \@cb;
345	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
346	} else {	1027	} else {
347	delete $command{$name};
348	delete $COMMAND{"$name\000"};	1028	delete $COMMAND{$name};
349	}	1029	}
350	}	1030	}
351		1031
352	# remove extcmds	1032	# remove extcmds
353	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1033	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
354	delete $extcmd{$name};	1034	delete $EXTCMD{$name};
355	}	1035	}
356		1036
357	if (my $cb = $pkg->can ("on_unload")) {	1037	if (my $cb = $pkg->can ("unload")) {
358	eval {	1038	eval {
359	$cb->($pkg);	1039	$cb->($pkg);
360	1	1040	1
361	} or warn "$pkg unloaded, but with errors: $@";	1041	} or warn "$pkg unloaded, but with errors: $@";
362	}	1042	}
363		1043
364	Symbol::delete_package $pkg;	1044	Symbol::delete_package $pkg;
365	}	1045	}
366		1046
367	sub load_extensions {	1047	sub load_extensions {
368	my $LIBDIR = maps_directory "perl";
369
370	for my $ext (<$LIBDIR/*.ext>) {	1048	for my $ext (<$LIBDIR/*.ext>) {
371	next unless -r $ext;	1049	next unless -r $ext;
372	eval {	1050	eval {
373	load_extension $ext;	1051	load_extension $ext;
374	1	1052	1
375	} or warn "$ext not loaded: $@";	1053	} or warn "$ext not loaded: $@";
376	}	1054	}
377	}	1055	}
378		1056
379	sub _perl_reload(&) {
380	my ($msg) = @_;
381
382	$msg->("reloading...");
383
384	eval {
385	# 1. cancel all watchers
386	$_->cancel for Event::all_watchers;
387
388	# 2. unload all extensions
389	for (@exts) {
390	$msg->("unloading <$_>");
391	unload_extension $_;
392	}
393
394	# 3. unload all modules loaded from $LIBDIR
395	while (my ($k, $v) = each %INC) {
396	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
397
398	$msg->("removing <$k>");
399	delete $INC{$k};
400
401	$k =~ s/\.pm$//;
402	$k =~ s/\//::/g;
403
404	if (my $cb = $k->can ("unload_module")) {
405	$cb->();
406	}
407
408	Symbol::delete_package $k;
409	}
410
411	# 4. get rid of safe::, as good as possible
412	Symbol::delete_package "safe::$_"
413	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
414
415	# 5. remove register_script_function callbacks
416	# TODO
417
418	# 6. unload cf.pm "a bit"
419	delete $INC{"cf.pm"};
420
421	# don't, removes xs symbols, too,
422	# and global variables created in xs
423	#Symbol::delete_package __PACKAGE__;
424
425	# 7. reload cf.pm
426	$msg->("reloading cf.pm");
427	require cf;
428	};
429	$msg->($@) if $@;
430
431	$msg->("reloaded");
432	};
433
434	sub perl_reload() {
435	_perl_reload {
436	warn $_[0];
437	print "$_[0]\n";
438	};
439	}
440
441	register_command "perl-reload", 0, sub {
442	my ($who, $arg) = @_;
443
444	if ($who->flag (FLAG_WIZ)) {
445	_perl_reload {
446	warn $_[0];
447	$who->message ($_[0]);
448	};
449	}
450	};
451
452	#############################################################################
453	# utility functions
454
455	use JSON::Syck (); # TODO# replace by JSON::PC once working
456
457	sub from_json($) {
458	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
459	JSON::Syck::Load $_[0]
460	}
461
462	sub to_json($) {
463	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
464	JSON::Syck::Dump $_[0]
465	}
466
467	#############################################################################
468	# extcmd framework, basically convert ext <msg>
469	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
470
471	sub on_extcmd {
472	my ($pl, $buf) = @_;
473
474	my $msg = eval { from_json $buf };
475
476	if (ref $msg) {
477	if (my $cb = $extcmd{$msg->{msgtype}}) {
478	if (my %reply = $cb->[0]->($pl, $msg)) {
479	$pl->ext_reply ($msg->{msgid}, %reply);
480	}
481	}
482	} else {
483	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
484	}
485
486	1
487	}
488
489	#############################################################################	1057	#############################################################################
490	# load/save/clean perl data associated with a map	1058	# load/save/clean perl data associated with a map
491		1059
492	*cf::mapsupport::on_clean = sub {	1060	*cf::mapsupport::on_clean = sub {
493	my ($map) = @_;	1061	my ($map) = @_;
494		1062
495	my $path = $map->tmpname;	1063	my $path = $map->tmpname;
496	defined $path or return;	1064	defined $path or return;
497		1065
498	unlink "$path.cfperl";	1066	unlink "$path.pst";
499	};	1067	};
500		1068
501	*cf::mapsupport::on_swapin =
502	*cf::mapsupport::on_load = sub {
503	my ($map) = @_;
504
505	my $path = $map->tmpname;
506	$path = $map->path unless defined $path;
507
508	open my $fh, "<:raw", "$path.cfperl"
509	or return; # no perl data
510
511	my $data = Storable::thaw do { local $/; <$fh> };
512
513	$data->{version} <= 1
514	or return; # too new
515
516	$map->_set_obs ($data->{obs});
517	};
518
519	*cf::mapsupport::on_swapout = sub {
520	my ($map) = @_;
521
522	my $path = $map->tmpname;
523	$path = $map->path unless defined $path;
524
525	my $obs = $map->_get_obs;
526
527	if (defined $obs) {
528	open my $fh, ">:raw", "$path.cfperl"
529	or die "$path.cfperl: $!";
530
531	stat $path;
532
533	print $fh Storable::nfreeze {
534	size => (stat _)[7],
535	time => (stat _)[9],
536	version => 1,
537	obs => $obs,
538	};
539
540	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
541	} else {
542	unlink "$path.cfperl";
543	}
544	};
545
546	attach_to_maps prio => -10000, package => cf::mapsupport::;	1069	cf::map->attach (prio => -10000, package => cf::mapsupport::);
547		1070
548	#############################################################################	1071	#############################################################################
549	# load/save perl data associated with player->ob objects	1072	# load/save perl data associated with player->ob objects
550		1073
551	sub all_objects(@) {	1074	sub all_objects(@) {
552	@_, map all_objects ($_->inv), @_	1075	@_, map all_objects ($_->inv), @_
553	}	1076	}
554		1077
555	attach_to_players	1078	# TODO: compatibility cruft, remove when no longer needed
		1079	cf::player->attach (
556	on_load => sub {	1080	on_load => sub {
557	my ($pl, $path) = @_;	1081	my ($pl, $path) = @_;
558		1082
559	for my $o (all_objects $pl->ob) {	1083	for my $o (all_objects $pl->ob) {
560	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1084	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
562		1086
563	%$o = %{ Storable::thaw pack "H*", $value };	1087	%$o = %{ Storable::thaw pack "H*", $value };
564	}	1088	}
565	}	1089	}
566	},	1090	},
567	on_save => sub {	1091	);
568	my ($pl, $path) = @_;
569
570	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
571	for grep %$_, all_objects $pl->ob;
572	},
573	;
574		1092
575	#############################################################################	1093	#############################################################################
576	# core extensions - in perl	1094
		1095	=head2 CORE EXTENSIONS
		1096
		1097	Functions and methods that extend core crossfire objects.
		1098
		1099	=head3 cf::player
		1100
		1101	=over 4
577		1102
578	=item cf::player::exists $login	1103	=item cf::player::exists $login
579		1104
580	Returns true when the given account exists.	1105	Returns true when the given account exists.
581		1106
…		…
584	sub cf::player::exists($) {	1109	sub cf::player::exists($) {
585	cf::player::find $_[0]	1110	cf::player::find $_[0]
586	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1111	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
587	}	1112	}
588		1113
		1114	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1115
		1116	Sends an ext reply to the player.
		1117
		1118	=cut
		1119
		1120	sub cf::player::ext_reply($$$%) {
		1121	my ($self, $id, %msg) = @_;
		1122
		1123	$msg{msgid} = $id;
		1124
		1125	$self->send ("ext " . to_json \%msg);
		1126	}
		1127
		1128	=back
		1129
		1130
		1131	=head3 cf::map
		1132
		1133	=over 4
		1134
		1135	=cut
		1136
		1137	package cf::map;
		1138
		1139	use Fcntl;
		1140	use Coro::AIO;
		1141
		1142	our $MAX_RESET = 7200;
		1143	our $DEFAULT_RESET = 3600;
		1144
		1145	sub generate_random_map {
		1146	my ($path, $rmp) = @_;
		1147
		1148	# mit "rum" bekleckern, nicht
		1149	cf::map::_create_random_map
		1150	$path,
		1151	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1152	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1153	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1154	$rmp->{exit_on_final_map},
		1155	$rmp->{xsize}, $rmp->{ysize},
		1156	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1157	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1158	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1159	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1160	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1161	(cf::region::find $rmp->{region})
		1162	}
		1163
		1164	# and all this just because we cannot iterate over
		1165	# all maps in C++...
		1166	sub change_all_map_light {
		1167	my ($change) = @_;
		1168
		1169	$_->change_map_light ($change)
		1170	for grep $_->outdoor, values %cf::MAP;
		1171	}
		1172
		1173	sub try_load_header($) {
		1174	my ($path) = @_;
		1175
		1176	utf8::encode $path;
		1177	aio_open $path, O_RDONLY, 0
		1178	or return;
		1179
		1180	my $map = cf::map::new
		1181	or return;
		1182
		1183	$map->load_header ($path)
		1184	or return;
		1185
		1186	$map->{load_path} = $path;
		1187
		1188	$map
		1189	}
		1190
		1191	sub find_map;
		1192	sub find_map {
		1193	my ($path, $origin) = @_;
		1194
		1195	#warn "find_map<$path,$origin>\n";#d#
		1196
		1197	$path = new cf::path $path, $origin && $origin->path;
		1198	my $key = $path->as_string;
		1199
		1200	cf::lock_wait "map_find:$key";
		1201
		1202	$cf::MAP{$key} || do {
		1203	my $guard = cf::lock_acquire "map_find:$key";
		1204
		1205	# do it the slow way
		1206	my $map = try_load_header $path->save_path;
		1207
		1208	if ($map) {
		1209	# safety
		1210	$map->{instantiate_time} = $cf::RUNTIME
		1211	if $map->{instantiate_time} > $cf::RUNTIME;
		1212	} else {
		1213	if (my $rmp = $path->random_map_params) {
		1214	$map = generate_random_map $key, $rmp;
		1215	} else {
		1216	$map = try_load_header $path->load_path;
		1217	}
		1218
		1219	$map or return;
		1220
		1221	$map->{load_original} = 1;
		1222	$map->{instantiate_time} = $cf::RUNTIME;
		1223	$map->instantiate;
		1224
		1225	# per-player maps become, after loading, normal maps
		1226	$map->per_player (0) if $path->{user_rel};
		1227	}
		1228
		1229	$map->path ($key);
		1230	$map->{path} = $path;
		1231	$map->{last_save} = $cf::RUNTIME;
		1232	$map->last_access ($cf::RUNTIME);
		1233
		1234	if ($map->should_reset) {
		1235	$map->reset;
		1236	undef $guard;
		1237	$map = find_map $path
		1238	or return;
		1239	}
		1240
		1241	$cf::MAP{$key} = $map
		1242	}
		1243	}
		1244
		1245	sub load {
		1246	my ($self) = @_;
		1247
		1248	my $path = $self->{path};
		1249	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1250
		1251	return if $self->in_memory != cf::MAP_SWAPPED;
		1252
		1253	$self->in_memory (cf::MAP_LOADING);
		1254
		1255	$self->alloc;
		1256	$self->load_objects ($self->{load_path}, 1)
		1257	or return;
		1258
		1259	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1260	if delete $self->{load_original};
		1261
		1262	if (my $uniq = $path->uniq_path) {
		1263	utf8::encode $uniq;
		1264	if (aio_open $uniq, O_RDONLY, 0) {
		1265	$self->clear_unique_items;
		1266	$self->load_objects ($uniq, 0);
		1267	}
		1268	}
		1269
		1270	# now do the right thing for maps
		1271	$self->link_multipart_objects;
		1272
		1273	if ($self->{path}->is_style_map) {
		1274	$self->{deny_save} = 1;
		1275	$self->{deny_reset} = 1;
		1276	} else {
		1277	$self->fix_auto_apply;
		1278	$self->decay_objects;
		1279	$self->update_buttons;
		1280	$self->set_darkness_map;
		1281	$self->difficulty ($self->estimate_difficulty)
		1282	unless $self->difficulty;
		1283	$self->activate;
		1284	}
		1285
		1286	$self->in_memory (cf::MAP_IN_MEMORY);
		1287	}
		1288
		1289	sub load_map_sync {
		1290	my ($path, $origin) = @_;
		1291
		1292	#warn "load_map_sync<$path, $origin>\n";#d#
		1293
		1294	cf::sync_job {
		1295	my $map = cf::map::find_map $path, $origin
		1296	or return;
		1297	$map->load;
		1298	$map
		1299	}
		1300	}
		1301
		1302	sub save {
		1303	my ($self) = @_;
		1304
		1305	$self->{last_save} = $cf::RUNTIME;
		1306
		1307	return unless $self->dirty;
		1308
		1309	my $save = $self->{path}->save_path; utf8::encode $save;
		1310	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1311
		1312	$self->{load_path} = $save;
		1313
		1314	return if $self->{deny_save};
		1315
		1316	if ($uniq) {
		1317	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1318	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1319	} else {
		1320	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1321	}
		1322	}
		1323
		1324	sub swap_out {
		1325	my ($self) = @_;
		1326
		1327	# save first because save cedes
		1328	$self->save;
		1329
		1330	return if $self->players;
		1331	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1332	return if $self->{deny_save};
		1333
		1334	$self->clear;
		1335	$self->in_memory (cf::MAP_SWAPPED);
		1336	}
		1337
		1338	sub reset_at {
		1339	my ($self) = @_;
		1340
		1341	# TODO: safety, remove and allow resettable per-player maps
		1342	return 1e99 if $self->{path}{user_rel};
		1343	return 1e99 if $self->{deny_reset};
		1344
		1345	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1346	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1347
		1348	$time + $to
		1349	}
		1350
		1351	sub should_reset {
		1352	my ($self) = @_;
		1353
		1354	$self->reset_at <= $cf::RUNTIME
		1355	}
		1356
		1357	sub unlink_save {
		1358	my ($self) = @_;
		1359
		1360	utf8::encode (my $save = $self->{path}->save_path);
		1361	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1362	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1363	}
		1364
		1365	sub rename {
		1366	my ($self, $new_path) = @_;
		1367
		1368	$self->unlink_save;
		1369
		1370	delete $cf::MAP{$self->path};
		1371	$self->{path} = new cf::path $new_path;
		1372	$self->path ($self->{path}->as_string);
		1373	$cf::MAP{$self->path} = $self;
		1374
		1375	$self->save;
		1376	}
		1377
		1378	sub reset {
		1379	my ($self) = @_;
		1380
		1381	return if $self->players;
		1382	return if $self->{path}{user_rel};#d#
		1383
		1384	warn "resetting map ", $self->path;#d#
		1385
		1386	delete $cf::MAP{$self->path};
		1387
		1388	$_->clear_links_to ($self) for values %cf::MAP;
		1389
		1390	$self->unlink_save;
		1391	$self->destroy;
		1392	}
		1393
		1394	my $nuke_counter = "aaaa";
		1395
		1396	sub nuke {
		1397	my ($self) = @_;
		1398
		1399	$self->{deny_save} = 1;
		1400	$self->reset_timeout (1);
		1401	$self->rename ("{nuke}/" . ($nuke_counter++));
		1402	$self->reset; # polite request, might not happen
		1403	}
		1404
		1405	sub customise_for {
		1406	my ($map, $ob) = @_;
		1407
		1408	if ($map->per_player) {
		1409	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1410	}
		1411
		1412	$map
		1413	}
		1414
		1415	sub emergency_save {
		1416	local $cf::FREEZE = 1;
		1417
		1418	warn "enter emergency map save\n";
		1419
		1420	cf::sync_job {
		1421	warn "begin emergency map save\n";
		1422	$_->save for values %cf::MAP;
		1423	};
		1424
		1425	warn "end emergency map save\n";
		1426	}
		1427
		1428	package cf;
		1429
		1430	=back
		1431
		1432
		1433	=head3 cf::object::player
		1434
		1435	=over 4
		1436
589	=item $player->reply ($npc, $msg[, $flags])	1437	=item $player_object->reply ($npc, $msg[, $flags])
590		1438
591	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1439	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
592	can be C<undef>. Does the right thing when the player is currently in a	1440	can be C<undef>. Does the right thing when the player is currently in a
593	dialogue with the given NPC character.	1441	dialogue with the given NPC character.
594		1442
595	=cut	1443	=cut
596		1444
597	# rough implementation of a future "reply" method that works	1445	# rough implementation of a future "reply" method that works
598	# with dialog boxes.	1446	# with dialog boxes.
		1447	#TODO: the first argument must go, split into a $npc->reply_to ( method
599	sub cf::object::player::reply($$$;$) {	1448	sub cf::object::player::reply($$$;$) {
600	my ($self, $npc, $msg, $flags) = @_;	1449	my ($self, $npc, $msg, $flags) = @_;
601		1450
602	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1451	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
603		1452
…		…
607	$msg = $npc->name . " says: $msg" if $npc;	1456	$msg = $npc->name . " says: $msg" if $npc;
608	$self->message ($msg, $flags);	1457	$self->message ($msg, $flags);
609	}	1458	}
610	}	1459	}
611		1460
612	=item $player->ext_reply ($msgid, $msgtype, %msg)	1461	=item $player_object->may ("access")
613		1462
614	Sends an ext reply to the player.	1463	Returns wether the given player is authorized to access resource "access"
		1464	(e.g. "command_wizcast").
615		1465
616	=cut	1466	=cut
617		1467
618	sub cf::player::ext_reply($$$%) {	1468	sub cf::object::player::may {
		1469	my ($self, $access) = @_;
		1470
		1471	$self->flag (cf::FLAG_WIZ) ||
		1472	(ref $cf::CFG{"may_$access"}
		1473	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1474	: $cf::CFG{"may_$access"})
		1475	}
		1476
		1477	=item $player_object->enter_link
		1478
		1479	Freezes the player and moves him/her to a special map (C<{link}>).
		1480
		1481	The player should be reaosnably safe there for short amounts of time. You
		1482	I<MUST> call C<leave_link> as soon as possible, though.
		1483
		1484	=item $player_object->leave_link ($map, $x, $y)
		1485
		1486	Moves the player out of the specila link map onto the given map. If the
		1487	map is not valid (or omitted), the player will be moved back to the
		1488	location he/she was before the call to C<enter_link>, or, if that fails,
		1489	to the emergency map position.
		1490
		1491	Might block.
		1492
		1493	=cut
		1494
		1495	sub cf::object::player::enter_link {
		1496	my ($self) = @_;
		1497
		1498	$self->deactivate_recursive;
		1499
		1500	return if $self->map == $LINK_MAP;
		1501
		1502	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1503	if $self->map;
		1504
		1505	$self->enter_map ($LINK_MAP, 20, 20);
		1506	}
		1507
		1508	sub cf::object::player::leave_link {
		1509	my ($self, $map, $x, $y) = @_;
		1510
		1511	my $link_pos = delete $self->{_link_pos};
		1512
		1513	unless ($map) {
		1514	# restore original map position
		1515	($map, $x, $y) = @{ $link_pos || [] };
		1516	$map = cf::map::find_map $map;
		1517
		1518	unless ($map) {
		1519	($map, $x, $y) = @$EMERGENCY_POSITION;
		1520	$map = cf::map::find_map $map
		1521	or die "FATAL: cannot load emergency map\n";
		1522	}
		1523	}
		1524
		1525	($x, $y) = (-1, -1)
		1526	unless (defined $x) && (defined $y);
		1527
		1528	# use -1 or undef as default coordinates, not 0, 0
		1529	($x, $y) = ($map->enter_x, $map->enter_y)
		1530	if $x <=0 && $y <= 0;
		1531
		1532	$map->load;
		1533
		1534	$self->activate_recursive;
		1535	$self->enter_map ($map, $x, $y);
		1536	}
		1537
		1538	cf::player->attach (
		1539	on_logout => sub {
		1540	my ($pl) = @_;
		1541
		1542	# abort map switching before logout
		1543	if ($pl->ob->{_link_pos}) {
		1544	cf::sync_job {
		1545	$pl->ob->leave_link
		1546	};
		1547	}
		1548	},
		1549	on_login => sub {
		1550	my ($pl) = @_;
		1551
		1552	# try to abort aborted map switching on player login :)
		1553	# should happen only on crashes
		1554	if ($pl->ob->{_link_pos}) {
		1555	$pl->ob->enter_link;
		1556	cf::async {
		1557	# we need this sleep as the login has a concurrent enter_exit running
		1558	# and this sleep increases chances of the player not ending up in scorn
		1559	Coro::Timer::sleep 1;
		1560	$pl->ob->leave_link;
		1561	};
		1562	}
		1563	},
		1564	);
		1565
		1566	=item $player_object->goto_map ($path, $x, $y)
		1567
		1568	=cut
		1569
		1570	sub cf::object::player::goto_map {
		1571	my ($self, $path, $x, $y) = @_;
		1572
		1573	$self->enter_link;
		1574
		1575	(cf::async {
		1576	$path = new cf::path $path;
		1577
		1578	my $map = cf::map::find_map $path->as_string;
		1579	$map = $map->customise_for ($self) if $map;
		1580
		1581	# warn "entering ", $map->path, " at ($x, $y)\n"
		1582	# if $map;
		1583
		1584	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1585
		1586	$self->leave_link ($map, $x, $y);
		1587	})->prio (1);
		1588	}
		1589
		1590	=item $player_object->enter_exit ($exit_object)
		1591
		1592	=cut
		1593
		1594	sub parse_random_map_params {
		1595	my ($spec) = @_;
		1596
		1597	my $rmp = { # defaults
		1598	xsize => 10,
		1599	ysize => 10,
		1600	};
		1601
		1602	for (split /\n/, $spec) {
		1603	my ($k, $v) = split /\s+/, $_, 2;
		1604
		1605	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1606	}
		1607
		1608	$rmp
		1609	}
		1610
		1611	sub prepare_random_map {
		1612	my ($exit) = @_;
		1613
		1614	# all this does is basically replace the /! path by
		1615	# a new random map path (?random/...) with a seed
		1616	# that depends on the exit object
		1617
		1618	my $rmp = parse_random_map_params $exit->msg;
		1619
		1620	if ($exit->map) {
		1621	$rmp->{region} = $exit->map->region_name;
		1622	$rmp->{origin_map} = $exit->map->path;
		1623	$rmp->{origin_x} = $exit->x;
		1624	$rmp->{origin_y} = $exit->y;
		1625	}
		1626
		1627	$rmp->{random_seed} ||= $exit->random_seed;
		1628
		1629	my $data = cf::to_json $rmp;
		1630	my $md5 = Digest::MD5::md5_hex $data;
		1631
		1632	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1633	aio_write $fh, 0, (length $data), $data, 0;
		1634
		1635	$exit->slaying ("?random/$md5");
		1636	$exit->msg (undef);
		1637	}
		1638	}
		1639
		1640	sub cf::object::player::enter_exit {
619	my ($self, $id, %msg) = @_;	1641	my ($self, $exit) = @_;
620		1642
621	$msg{msgid} = $id;	1643	return unless $self->type == cf::PLAYER;
622		1644
623	$self->send ("ext " . to_json \%msg);	1645	$self->enter_link;
624	}
625		1646
626	#############################################################################	1647	(cf::async {
627	# map scripting support	1648	unless (eval {
		1649	prepare_random_map $exit
		1650	if $exit->slaying eq "/!";
628		1651
		1652	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1653	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1654
		1655	1;
		1656	}) {
		1657	$self->message ("Something went wrong deep within the crossfire server. "
		1658	. "I'll try to bring you back to the map you were before. "
		1659	. "Please report this to the dungeon master",
		1660	cf::NDI_UNIQUE | cf::NDI_RED);
		1661
		1662	warn "ERROR in enter_exit: $@";
		1663	$self->leave_link;
		1664	}
		1665	})->prio (1);
		1666	}
		1667
		1668	=head3 cf::client
		1669
		1670	=over 4
		1671
		1672	=item $client->send_drawinfo ($text, $flags)
		1673
		1674	Sends a drawinfo packet to the client. Circumvents output buffering so
		1675	should not be used under normal circumstances.
		1676
		1677	=cut
		1678
		1679	sub cf::client::send_drawinfo {
		1680	my ($self, $text, $flags) = @_;
		1681
		1682	utf8::encode $text;
		1683	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1684	}
		1685
		1686
		1687	=item $success = $client->query ($flags, "text", \&cb)
		1688
		1689	Queues a query to the client, calling the given callback with
		1690	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1691	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1692
		1693	Queries can fail, so check the return code. Or don't, as queries will become
		1694	reliable at some point in the future.
		1695
		1696	=cut
		1697
		1698	sub cf::client::query {
		1699	my ($self, $flags, $text, $cb) = @_;
		1700
		1701	return unless $self->state == ST_PLAYING
		1702	|| $self->state == ST_SETUP
		1703	|| $self->state == ST_CUSTOM;
		1704
		1705	$self->state (ST_CUSTOM);
		1706
		1707	utf8::encode $text;
		1708	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1709
		1710	$self->send_packet ($self->{query_queue}[0][0])
		1711	if @{ $self->{query_queue} } == 1;
		1712	}
		1713
		1714	cf::client->attach (
		1715	on_reply => sub {
		1716	my ($ns, $msg) = @_;
		1717
		1718	# this weird shuffling is so that direct followup queries
		1719	# get handled first
		1720	my $queue = delete $ns->{query_queue}
		1721	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1722
		1723	(shift @$queue)->[1]->($msg);
		1724
		1725	push @{ $ns->{query_queue} }, @$queue;
		1726
		1727	if (@{ $ns->{query_queue} } == @$queue) {
		1728	if (@$queue) {
		1729	$ns->send_packet ($ns->{query_queue}[0][0]);
		1730	} else {
		1731	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1732	}
		1733	}
		1734	},
		1735	);
		1736
		1737	=item $client->coro (\&cb)
		1738
		1739	Create a new coroutine, running the specified callback. The coroutine will
		1740	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1741	or loss of connection).
		1742
		1743	=cut
		1744
		1745	sub cf::client::coro {
		1746	my ($self, $cb) = @_;
		1747
		1748	my $coro = &cf::async ($cb);
		1749
		1750	$coro->on_destroy (sub {
		1751	delete $self->{_coro}{$coro+0};
		1752	});
		1753
		1754	$self->{_coro}{$coro+0} = $coro;
		1755
		1756	$coro
		1757	}
		1758
		1759	cf::client->attach (
		1760	on_destroy => sub {
		1761	my ($ns) = @_;
		1762
		1763	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1764	},
		1765	);
		1766
		1767	=back
		1768
		1769
		1770	=head2 SAFE SCRIPTING
		1771
		1772	Functions that provide a safe environment to compile and execute
		1773	snippets of perl code without them endangering the safety of the server
		1774	itself. Looping constructs, I/O operators and other built-in functionality
		1775	is not available in the safe scripting environment, and the number of
		1776	functions and methods that can be called is greatly reduced.
		1777
		1778	=cut
		1779
629	our $safe = new Safe "ext";	1780	our $safe = new Safe "safe";
630	our $safe_hole = new Safe::Hole;	1781	our $safe_hole = new Safe::Hole;
631		1782
632	$SIG{FPE} = 'IGNORE';	1783	$SIG{FPE} = 'IGNORE';
633		1784
634	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1785	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
635		1786
636	# here we export the classes and methods available to script code	1787	# here we export the classes and methods available to script code
637		1788
		1789	=pod
		1790
		1791	The following fucntions and emthods are available within a safe environment:
		1792
		1793	cf::object contr pay_amount pay_player map
		1794	cf::object::player player
		1795	cf::player peaceful
		1796	cf::map trigger
		1797
		1798	=cut
		1799
638	for (	1800	for (
639	["cf::object" => qw(contr pay_amount pay_player)],	1801	["cf::object" => qw(contr pay_amount pay_player map)],
640	["cf::object::player" => qw(player)],	1802	["cf::object::player" => qw(player)],
641	["cf::player" => qw(peaceful)],	1803	["cf::player" => qw(peaceful)],
		1804	["cf::map" => qw(trigger)],
642	) {	1805	) {
643	no strict 'refs';	1806	no strict 'refs';
644	my ($pkg, @funs) = @$_;	1807	my ($pkg, @funs) = @$_;
645	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1808	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
646	for @funs;	1809	for @funs;
647	}	1810	}
648		1811
		1812	=over 4
		1813
		1814	=item @retval = safe_eval $code, [var => value, ...]
		1815
		1816	Compiled and executes the given perl code snippet. additional var/value
		1817	pairs result in temporary local (my) scalar variables of the given name
		1818	that are available in the code snippet. Example:
		1819
		1820	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1821
		1822	=cut
		1823
649	sub safe_eval($;@) {	1824	sub safe_eval($;@) {
650	my ($code, %vars) = @_;	1825	my ($code, %vars) = @_;
651		1826
652	my $qcode = $code;	1827	my $qcode = $code;
653	$qcode =~ s/"/‟/g; # not allowed in #line filenames	1828	$qcode =~ s/"/‟/g; # not allowed in #line filenames
654	$qcode =~ s/\n/\\n/g;	1829	$qcode =~ s/\n/\\n/g;
655		1830
656	local $_;	1831	local $_;
657	local @safe::cf::_safe_eval_args = values %vars;	1832	local @safe::cf::_safe_eval_args = values %vars;
658		1833
659	$code =	1834	my $eval =
660	"do {\n"	1835	"do {\n"
661	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	1836	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
662	. "#line 0 \"{$qcode}\"\n"	1837	. "#line 0 \"{$qcode}\"\n"
663	. $code	1838	. $code
664	. "\n}"	1839	. "\n}"
665	;	1840	;
666		1841
667	sub_generation_inc;	1842	sub_generation_inc;
668	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	1843	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
669	sub_generation_inc;	1844	sub_generation_inc;
670		1845
		1846	if ($@) {
		1847	warn "$@";
		1848	warn "while executing safe code '$code'\n";
		1849	warn "with arguments " . (join " ", %vars) . "\n";
		1850	}
		1851
671	wantarray ? @res : $res[0]	1852	wantarray ? @res : $res[0]
672	}	1853	}
		1854
		1855	=item cf::register_script_function $function => $cb
		1856
		1857	Register a function that can be called from within map/npc scripts. The
		1858	function should be reasonably secure and should be put into a package name
		1859	like the extension.
		1860
		1861	Example: register a function that gets called whenever a map script calls
		1862	C<rent::overview>, as used by the C<rent> extension.
		1863
		1864	cf::register_script_function "rent::overview" => sub {
		1865	...
		1866	};
		1867
		1868	=cut
673		1869
674	sub register_script_function {	1870	sub register_script_function {
675	my ($fun, $cb) = @_;	1871	my ($fun, $cb) = @_;
676		1872
677	no strict 'refs';	1873	no strict 'refs';
678	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1874	*{"safe::$fun"} = $safe_hole->wrap ($cb);
679	}	1875	}
680		1876
		1877	=back
		1878
		1879	=cut
		1880
		1881	#############################################################################
		1882
		1883	=head2 EXTENSION DATABASE SUPPORT
		1884
		1885	Crossfire maintains a very simple database for extension use. It can
		1886	currently store anything that can be serialised using Storable, which
		1887	excludes objects.
		1888
		1889	The parameter C<$family> should best start with the name of the extension
		1890	using it, it should be unique.
		1891
		1892	=over 4
		1893
		1894	=item $hashref = cf::db_get $family
		1895
		1896	Return a hashref for use by the extension C<$family>, which can be
		1897	modified. After modifications, you have to call C<cf::db_dirty> or
		1898	C<cf::db_sync>.
		1899
		1900	=item $value = cf::db_get $family => $key
		1901
		1902	Returns a single value from the database
		1903
		1904	=item cf::db_put $family => $hashref
		1905
		1906	Stores the given family hashref into the database. Updates are delayed, if
		1907	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1908
		1909	=item cf::db_put $family => $key => $value
		1910
		1911	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1912	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1913
		1914	=item cf::db_dirty
		1915
		1916	Marks the database as dirty, to be updated at a later time.
		1917
		1918	=item cf::db_sync
		1919
		1920	Immediately write the database to disk I<if it is dirty>.
		1921
		1922	=cut
		1923
		1924	our $DB;
		1925
		1926	{
		1927	my $path = cf::localdir . "/database.pst";
		1928
		1929	sub db_load() {
		1930	$DB = stat $path ? Storable::retrieve $path : { };
		1931	}
		1932
		1933	my $pid;
		1934
		1935	sub db_save() {
		1936	waitpid $pid, 0 if $pid;
		1937	if (0 == ($pid = fork)) {
		1938	$DB->{_meta}{version} = 1;
		1939	Storable::nstore $DB, "$path~";
		1940	rename "$path~", $path;
		1941	cf::_exit 0 if defined $pid;
		1942	}
		1943	}
		1944
		1945	my $dirty;
		1946
		1947	sub db_sync() {
		1948	db_save if $dirty;
		1949	undef $dirty;
		1950	}
		1951
		1952	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1953	db_sync;
		1954	});
		1955
		1956	sub db_dirty() {
		1957	$dirty = 1;
		1958	$idle->start;
		1959	}
		1960
		1961	sub db_get($;$) {
		1962	@_ >= 2
		1963	? $DB->{$_[0]}{$_[1]}
		1964	: ($DB->{$_[0]} ||= { })
		1965	}
		1966
		1967	sub db_put($$;$) {
		1968	if (@_ >= 3) {
		1969	$DB->{$_[0]}{$_[1]} = $_[2];
		1970	} else {
		1971	$DB->{$_[0]} = $_[1];
		1972	}
		1973	db_dirty;
		1974	}
		1975
		1976	cf::global->attach (
		1977	prio => 10000,
		1978	on_cleanup => sub {
		1979	db_sync;
		1980	},
		1981	);
		1982	}
		1983
681	#############################################################################	1984	#############################################################################
682	# the server's main()	1985	# the server's main()
683		1986
		1987	sub cfg_load {
		1988	open my $fh, "<:utf8", cf::confdir . "/config"
		1989	or return;
		1990
		1991	local $/;
		1992	*CFG = YAML::Syck::Load <$fh>;
		1993	}
		1994
684	sub main {	1995	sub main {
		1996	# we must not ever block the main coroutine
		1997	local $Coro::idle = sub {
		1998	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1999	(Coro::unblock_sub {
		2000	Event::one_event;
		2001	})->();
		2002	};
		2003
		2004	cfg_load;
		2005	db_load;
		2006	load_extensions;
685	Event::loop;	2007	Event::loop;
686	}	2008	}
687		2009
688	#############################################################################	2010	#############################################################################
689	# initialisation	2011	# initialisation
690		2012
		2013	sub reload() {
		2014	# can/must only be called in main
		2015	if ($Coro::current != $Coro::main) {
		2016	warn "can only reload from main coroutine\n";
		2017	return;
		2018	}
		2019
		2020	warn "reloading...";
		2021
		2022	local $FREEZE = 1;
		2023	cf::emergency_save;
		2024
		2025	eval {
		2026	# if anything goes wrong in here, we should simply crash as we already saved
		2027
		2028	# cancel all watchers
		2029	for (Event::all_watchers) {
		2030	$_->cancel if $_->data & WF_AUTOCANCEL;
		2031	}
		2032
		2033	# cancel all extension coros
		2034	$_->cancel for values %EXT_CORO;
		2035	%EXT_CORO = ();
		2036
		2037	# unload all extensions
		2038	for (@exts) {
		2039	warn "unloading <$_>";
		2040	unload_extension $_;
		2041	}
		2042
		2043	# unload all modules loaded from $LIBDIR
		2044	while (my ($k, $v) = each %INC) {
		2045	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2046
		2047	warn "removing <$k>";
		2048	delete $INC{$k};
		2049
		2050	$k =~ s/\.pm$//;
		2051	$k =~ s/\//::/g;
		2052
		2053	if (my $cb = $k->can ("unload_module")) {
		2054	$cb->();
		2055	}
		2056
		2057	Symbol::delete_package $k;
		2058	}
		2059
		2060	# sync database to disk
		2061	cf::db_sync;
		2062	IO::AIO::flush;
		2063
		2064	# get rid of safe::, as good as possible
		2065	Symbol::delete_package "safe::$_"
		2066	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2067
		2068	# remove register_script_function callbacks
		2069	# TODO
		2070
		2071	# unload cf.pm "a bit"
		2072	delete $INC{"cf.pm"};
		2073
		2074	# don't, removes xs symbols, too,
		2075	# and global variables created in xs
		2076	#Symbol::delete_package __PACKAGE__;
		2077
		2078	# reload cf.pm
		2079	warn "reloading cf.pm";
		2080	require cf;
		2081	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2082
		2083	# load config and database again
		2084	cf::cfg_load;
		2085	cf::db_load;
		2086
		2087	# load extensions
		2088	warn "load extensions";
		2089	cf::load_extensions;
		2090
		2091	# reattach attachments to objects
		2092	warn "reattach";
		2093	_global_reattach;
		2094	};
		2095
		2096	if ($@) {
		2097	warn $@;
		2098	warn "error while reloading, exiting.";
		2099	exit 1;
		2100	}
		2101
		2102	warn "reloaded successfully";
		2103	};
		2104
		2105	#############################################################################
		2106
		2107	unless ($LINK_MAP) {
		2108	$LINK_MAP = cf::map::new;
		2109
		2110	$LINK_MAP->width (41);
		2111	$LINK_MAP->height (41);
		2112	$LINK_MAP->alloc;
		2113	$LINK_MAP->path ("{link}");
		2114	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2115	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2116
		2117	# dirty hack because... archetypes are not yet loaded
		2118	Event->timer (
		2119	after => 2,
		2120	cb => sub {
		2121	$_[0]->w->cancel;
		2122
		2123	# provide some exits "home"
		2124	my $exit = cf::object::new "exit";
		2125
		2126	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2127	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2128	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2129
		2130	$LINK_MAP->insert ($exit->clone, 19, 19);
		2131	$LINK_MAP->insert ($exit->clone, 19, 20);
		2132	$LINK_MAP->insert ($exit->clone, 19, 21);
		2133	$LINK_MAP->insert ($exit->clone, 20, 19);
		2134	$LINK_MAP->insert ($exit->clone, 20, 21);
		2135	$LINK_MAP->insert ($exit->clone, 21, 19);
		2136	$LINK_MAP->insert ($exit->clone, 21, 20);
		2137	$LINK_MAP->insert ($exit->clone, 21, 21);
		2138
		2139	$exit->destroy;
		2140	});
		2141
		2142	$LINK_MAP->{deny_save} = 1;
		2143	$LINK_MAP->{deny_reset} = 1;
		2144
		2145	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2146	}
		2147
691	register "<global>", __PACKAGE__;	2148	register "<global>", __PACKAGE__;
692		2149
		2150	register_command "reload" => sub {
		2151	my ($who, $arg) = @_;
		2152
		2153	if ($who->flag (FLAG_WIZ)) {
		2154	$who->message ("start of reload.");
		2155	reload;
		2156	$who->message ("end of reload.");
		2157	}
		2158	};
		2159
693	unshift @INC, $LIBDIR;	2160	unshift @INC, $LIBDIR;
694		2161
695	load_extensions;
696
697	$TICK_WATCHER = Event->timer (	2162	$TICK_WATCHER = Event->timer (
		2163	reentrant => 0,
698	prio => 1,	2164	prio => 0,
699	at => $NEXT_TICK || 1,	2165	at => $NEXT_TICK || $TICK,
		2166	data => WF_AUTOCANCEL,
700	cb => sub {	2167	cb => sub {
		2168	unless ($FREEZE) {
701	cf::server_tick; # one server iteration	2169	cf::server_tick; # one server iteration
		2170	$RUNTIME += $TICK;
		2171	}
702		2172
703	my $NOW = Event::time;
704	$NEXT_TICK += $TICK;	2173	$NEXT_TICK += $TICK;
705		2174
706	# if we are delayed by four ticks, skip them all	2175	# if we are delayed by four ticks or more, skip them all
707	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2176	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
708		2177
709	$TICK_WATCHER->at ($NEXT_TICK);	2178	$TICK_WATCHER->at ($NEXT_TICK);
710	$TICK_WATCHER->start;	2179	$TICK_WATCHER->start;
711	},	2180	},
712	);	2181	);
713		2182
		2183	IO::AIO::max_poll_time $TICK * 0.2;
		2184
		2185	Event->io (
		2186	fd => IO::AIO::poll_fileno,
		2187	poll => 'r',
		2188	prio => 5,
		2189	data => WF_AUTOCANCEL,
		2190	cb => \&IO::AIO::poll_cb,
		2191	);
		2192
		2193	Event->timer (
		2194	data => WF_AUTOCANCEL,
		2195	after => 0,
		2196	interval => 10,
		2197	cb => sub {
		2198	(Coro::unblock_sub {
		2199	write_runtime
		2200	or warn "ERROR: unable to write runtime file: $!";
		2201	})->();
		2202	},
		2203	);
		2204
		2205	END { cf::emergency_save }
		2206
714	1	2207	1
715		2208

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