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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.47 by root, Sun Aug 27 13:02:04 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
16	_reload_1;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
17		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
18	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
19	our @EVENT;	39	our @EVENT;
20	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		41
24	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	43	our $TICK_WATCHER;
26	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
27		115
28	BEGIN {	116	BEGIN {
29	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
31	$msg .= "\n"	121	$msg .= "\n"
32	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
33		123
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
36	};	125	};
37	}	126	}
38		127
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	130	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	131	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	132	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		134
75	# 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
76	# within the Safe compartment.	136	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
78	no strict 'refs';	144	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	146	}
81		147
82	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
84	};	150	};
85		151
86	my %ext_pkg;	152	my %ext_pkg;
87	my @exts;	153	my @exts;
88	my @hook;	154	my @hook;
89	my %command;
90	my %extcmd;
91		155
92	#############################################################################	156	=head2 UTILITY FUNCTIONS
93	# utility functions	157
		158	=over 4
		159
		160	=cut
94		161
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	162	use JSON::Syck (); # TODO# replace by JSON::PC once working
		163
		164	=item $ref = cf::from_json $json
		165
		166	Converts a JSON string into the corresponding perl data structure.
		167
		168	=cut
96		169
97	sub from_json($) {	170	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	171	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	172	JSON::Syck::Load $_[0]
100	}	173	}
101		174
		175	=item $json = cf::to_json $ref
		176
		177	Converts a perl data structure into its JSON representation.
		178
		179	=cut
		180
102	sub to_json($) {	181	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
105	}	184	}
106		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
		357
107	#############################################################################	358	#############################################################################
108	# "new" plug-in system
109		359
110	=item $object->attach ($attachment, ...)	360	package cf::path;
111		361
112	Attach a pre-registered attachment to an object.	362	sub new {
		363	my ($class, $path, $base) = @_;
113		364
114	=item $player->attach ($attachment, ...)	365	$path = $path->as_string if ref $path;
115		366
116	Attach a pre-registered attachment to a player.	367	my $self = bless { }, $class;
117		368
118	=item $map->attach ($attachment, ...) # not yet persistent	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
119		376
120	Attach a pre-registered attachment to a map.	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;
121		385
122	=item cf::attach_global ...	386	if (defined $1) {
		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/$path");
		398	}
123		399
124	Attach handlers for global events.	400	for ($path) {
		401	redo if s{/\.?/}{/};
		402	redo if s{/[^/]+/\.\./}{/};
		403	}
		404	}
125		405
126	This and all following C<attach_*>-functions expect any number of the	406	$self->{path} = $path;
127	following handler/hook descriptions:	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:
128		546
129	=over 4	547	=over 4
130		548
131	=item prio => $number	549	=item prio => $number
132		550
…		…
134	by another C<prio> setting). Lower priority handlers get executed	552	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	553	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	554	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	555	unless you know what you are doing.
138		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
139	=item on_I<event> => \&cb	563	=item on_I<event> => \&cb
140		564
141	Call the given code reference whenever the named event happens (event is	565	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	566	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	567	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	576	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	577	object/class are recognised.
154		578
155	=back	579	=back
156		580
157	=item cf::attach_to_type $object_type, $subtype, ...	581	Example, define an attachment called "sockpuppet" that calls the given
		582	event handler when a monster attacks:
158		583
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	584	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	585	on_skill_attack => sub {
161	type.	586	my ($self, $victim) = @_;
		587	...
		588	}
		589	}
162		590
163	=item cf::attach_to_objects ...	591	=item $attachable->valid
164		592
165	Attach handlers to all objects. Do not use this except for debugging or	593	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	594	C-level object still exists. If you try to access an object that has no
167	the game.	595	valid C counterpart anymore you get an exception at runtime. This method
168		596	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	597	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		598
179	=cut	599	=cut
180		600
181	# the following variables are defined in .xs and must not be re-created	601	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	602	our @CB_GLOBAL = (); # registry for all global events
		603	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	604	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	605	our @CB_PLAYER = ();
		606	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	607	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	608	our @CB_MAP = ();
187		609
188	my %attachment;	610	my %attachment;
189		611
190	sub _attach_cb($\%$$$) {	612	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	613	my ($registry, $event, $prio, $cb) = @_;
192		614
193	use sort 'stable';	615	use sort 'stable';
194		616
195	$cb = [$prio, $cb];	617	$cb = [$prio, $cb];
196		618
197	@{$registry->[$event]} = sort	619	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	620	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	621	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	622	}
		623
		624	# hack
		625	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		626
204	# attach handles attaching event callbacks	627	# attach handles attaching event callbacks
205	# 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
206	# registry (== where the callback attaches to).	629	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	630	sub _attach {
208	my ($registry, $klass, @arg) = @_;	631	my ($registry, $klass, @arg) = @_;
209		632
		633	my $object_type;
210	my $prio = 0;	634	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	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;
		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	}
218		641
219	while (@arg) {	642	while (@arg) {
220	my $type = shift @arg;	643	my $type = shift @arg;
221		644
222	if ($type eq "prio") {	645	if ($type eq "prio") {
223	$prio = shift @arg;	646	$prio = shift @arg;
224		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] ||= [];
		656
225	} elsif ($type eq "package") {	657	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	658	my $pkg = shift @arg;
227		659
228	while (my ($name, $id) = each %cb_id) {	660	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	661	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	662	_attach_cb $registry, $id, $prio, $cb;
231	}	663	}
232	}	664	}
233		665
234	} elsif (exists $cb_id{$type}) {	666	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	667	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		668
237	} elsif (ref $type) {	669	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	670	warn "attaching objects not supported, ignoring.\n";
239		671
240	} else {	672	} else {
241	shift @arg;	673	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	674	warn "attach argument '$type' not supported, ignoring.\n";
243	}	675	}
244	}	676	}
245
246	\%undo
247	}	677	}
248		678
249	sub _attach_attachment {	679	sub _object_attach {
250	my ($obj, $name, @args) = @_;	680	my ($obj, $name, %arg) = @_;
251		681
252	my $res;	682	return if exists $obj->{_attachment}{$name};
253		683
254	if (my $attach = $attachment{$name}) {	684	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	685	my $registry = $obj->registry;
256		686
257	for (@$attach) {	687	for (@$attach) {
258	my ($klass, @attach) = @$_;	688	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	689	_attach $registry, $klass, @attach;
260	}
261
262	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
263	for (@$cb) {
264	eval { $_->[1]->($obj, @args); };
265	if ($@) {
266	warn "$@";
267	warn "... while processing '$name' instantiate with args <@args>.\n";
268	}
269	}	690	}
270	}	691
		692	$obj->{$name} = \%arg;
271	} else {	693	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	694	warn "object uses attachment '$name' that is not available, postponing.\n";
273	}	695	}
274		696
275	push @{$obj->{_attachment}}, $name;	697	$obj->{_attachment}{$name} = undef;
276
277	$res->{attachment} = $name;
278	$res
279	}	698	}
280		699
281	sub cf::object::attach {	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 {
282	my ($obj, $name, @args) = @_;	710	my ($obj, $name) = @_;
283		711
284	_attach_attachment $obj, $name, @args;	712	if (ref $obj) {
285	}	713	delete $obj->{_attachment}{$name};
		714	reattach ($obj);
		715	} else {
		716	Carp::croak "cannot, currently, detach class attachments";
		717	}
		718	};
286		719
287	sub cf::player::attach {	720	sub cf::attachable::attached {
288	my ($obj, $name, @args) = @_;	721	my ($obj, $name) = @_;
289		722
290	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	723	exists $obj->{_attachment}{$name}
291	}	724	}
292		725
293	sub cf::map::attach {	726	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
294	my ($obj, $name, @args) = @_;	727	eval "#line " . __LINE__ . " 'cf.pm'
		728	sub cf::\L$klass\E::_attach_registry {
		729	(\\\@CB_$klass, KLASS_$klass)
		730	}
295		731
296	_attach_attachment KLASS_MAP, $obj, $name, @args;	732	sub cf::\L$klass\E::attachment {
297	}
298
299	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}
302
303	sub attach_to_type {
304	my $type = shift;
305	my $subtype = shift;
306
307	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
308	}
309
310	sub attach_to_objects {
311	_attach @CB_OBJECT, KLASS_OBJECT, @_
312	}
313
314	sub attach_to_players {
315	_attach @CB_PLAYER, KLASS_PLAYER, @_
316	}
317
318	sub attach_to_maps {
319	_attach @CB_MAP, KLASS_MAP, @_
320	}
321
322	sub register_attachment {
323	my $name = shift;	733	my \$name = shift;
324		734
325	$attachment{$name} = [[KLASS_OBJECT, @_]];	735	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		736	}
		737	";
		738	die if $@;
326	}	739	}
327		740
328	our $override;	741	our $override;
329	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	742	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
330		743
…		…
344	for (@$callbacks) {	757	for (@$callbacks) {
345	eval { &{$_->[1]} };	758	eval { &{$_->[1]} };
346		759
347	if ($@) {	760	if ($@) {
348	warn "$@";	761	warn "$@";
349	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	762	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
350	override;	763	override;
351	}	764	}
352		765
353	return 1 if $override;	766	return 1 if $override;
354	}	767	}
355		768
356	0	769	0
357	}	770	}
		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
358		785
359	#############################################################################	786	#############################################################################
360	# object support	787	# object support
361		788
362	sub instantiate {
363	my ($obj, $data) = @_;
364
365	$data = from_json $data;
366
367	for (@$data) {
368	my ($name, $args) = @$_;
369	attach $obj, $name, @{$args || [] };
370	}
371	}
372
373	# basically do the same as instantiate, without calling instantiate
374	sub reattach {	789	sub reattach {
		790	# basically do the same as instantiate, without calling instantiate
375	my ($obj) = @_;	791	my ($obj) = @_;
		792
376	my $registry = $obj->registry;	793	my $registry = $obj->registry;
377		794
378	@$registry = ();	795	@$registry = ();
379		796
		797	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		798
380	for my $name (@{ $obj->{_attachment} }) {	799	for my $name (keys %{ $obj->{_attachment} || {} }) {
381	if (my $attach = $attachment{$name}) {	800	if (my $attach = $attachment{$name}) {
382	for (@$attach) {	801	for (@$attach) {
383	my ($klass, @attach) = @$_;	802	my ($klass, @attach) = @$_;
384	_attach @$registry, $klass, @attach;	803	_attach $registry, $klass, @attach;
385	}	804	}
386	} else {	805	} else {
387	warn "object uses attachment '$name' that is not available, postponing.\n";	806	warn "object uses attachment '$name' that is not available, postponing.\n";
388	}	807	}
389	}	808	}
390	}	809	}
391		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
392	sub object_freezer_save {	837	sub object_freezer_save {
393	my ($filename, $objs) = @_;	838	my ($filename, $rdata, $objs) = @_;
394		839
395	$filename .= ".pst";	840	sync_job {
		841	if (length $$rdata) {
		842	warn sprintf "saving %s (%d,%d)\n",
		843	$filename, length $$rdata, scalar @$objs;
396		844
397	if (@$objs) {	845	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
398	open my $fh, ">:raw", "$filename~";	846	chmod SAVE_MODE, $fh;
399	chmod $fh, SAVE_MODE;	847	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
400	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	848	aio_fsync $fh;
401	close $fh;	849	close $fh;
		850
		851	if (@$objs) {
		852	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		853	chmod SAVE_MODE, $fh;
		854	my $data = Storable::nfreeze { version => 1, objs => $objs };
		855	aio_write $fh, 0, (length $data), $data, 0;
		856	aio_fsync $fh;
		857	close $fh;
		858	aio_rename "$filename.pst~", "$filename.pst";
		859	}
		860	} else {
		861	aio_unlink "$filename.pst";
		862	}
		863
402	rename "$filename~", $filename;	864	aio_rename "$filename~", $filename;
		865	} else {
		866	warn "FATAL: $filename~: $!\n";
		867	}
403	} else {	868	} else {
404	unlink $filename;	869	aio_unlink $filename;
		870	aio_unlink "$filename.pst";
		871	}
405	}	872	}
		873	}
		874
		875	sub object_freezer_as_string {
		876	my ($rdata, $objs) = @_;
		877
		878	use Data::Dumper;
		879
		880	$$rdata . Dumper $objs
406	}	881	}
407		882
408	sub object_thawer_load {	883	sub object_thawer_load {
409	my ($filename) = @_;	884	my ($filename) = @_;
410		885
411	open my $fh, "<:raw:perlio", "$filename.pst"	886	my ($data, $av);
		887
		888	(aio_load $filename, $data) >= 0
412	or return;	889	or return;
413		890
414	eval { local $/; (Storable::thaw <$fh>)->{objs} }	891	unless (aio_stat "$filename.pst") {
415	}	892	(aio_load "$filename.pst", $av) >= 0
416		893	or return;
417	attach_to_objects	894	$av = eval { (Storable::thaw $av)->{objs} };
418	prio => -1000000,
419	on_clone => sub {
420	my ($src, $dst) = @_;
421
422	@{$dst->registry} = @{$src->registry};
423
424	%$dst = %$src;
425
426	$dst->{_attachment} = [@{ $src->{_attachment} }]
427	if exists $src->{_attachment};
428	},	895	}
429	;	896
		897	warn sprintf "loading %s (%d)\n",
		898	$filename, length $data, scalar @{$av || []};#d#
		899	return ($data, $av);
		900	}
430		901
431	#############################################################################	902	#############################################################################
432	# old plug-in events	903	# command handling &c
433		904
434	sub inject_event {	905	=item cf::register_command $name => \&callback($ob,$args);
435	my $extension = shift;
436	my $event_code = shift;
437		906
438	my $cb = $hook[$event_code]{$extension}	907	Register a callback for execution when the client sends the user command
439	or return;	908	$name.
440		909
441	&$cb	910	=cut
442	}
443
444	sub inject_global_event {
445	my $event = shift;
446
447	my $cb = $hook[$event]
448	or return;
449
450	List::Util::max map &$_, values %$cb
451	}
452
453	sub inject_command {
454	my ($name, $obj, $params) = @_;
455
456	for my $cmd (@{ $command{$name} }) {
457	$cmd->[1]->($obj, $params);
458	}
459
460	-1
461	}
462		911
463	sub register_command {	912	sub register_command {
464	my ($name, $time, $cb) = @_;	913	my ($name, $cb) = @_;
465		914
466	my $caller = caller;	915	my $caller = caller;
467	#warn "registering command '$name/$time' to '$caller'";	916	#warn "registering command '$name/$time' to '$caller'";
468		917
469	push @{ $command{$name} }, [$time, $cb, $caller];	918	push @{ $COMMAND{$name} }, [$caller, $cb];
470	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
471	}	919	}
		920
		921	=item cf::register_extcmd $name => \&callback($pl,$packet);
		922
		923	Register a callbackf ro execution when the client sends an extcmd packet.
		924
		925	If the callback returns something, it is sent back as if reply was being
		926	called.
		927
		928	=cut
472		929
473	sub register_extcmd {	930	sub register_extcmd {
474	my ($name, $cb) = @_;	931	my ($name, $cb) = @_;
475		932
476	my $caller = caller;	933	my $caller = caller;
477	#warn "registering extcmd '$name' to '$caller'";	934	#warn "registering extcmd '$name' to '$caller'";
478		935
479	$extcmd{$name} = [$cb, $caller];	936	$EXTCMD{$name} = [$cb, $caller];
480	}	937	}
		938
		939	cf::player->attach (
		940	on_command => sub {
		941	my ($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	);
481		970
482	sub register {	971	sub register {
483	my ($base, $pkg) = @_;	972	my ($base, $pkg) = @_;
484		973
485	#TODO	974	#TODO
…		…
504	. "#line 1 \"$path\"\n{\n"	993	. "#line 1 \"$path\"\n{\n"
505	. (do { local $/; <$fh> })	994	. (do { local $/; <$fh> })
506	. "\n};\n1";	995	. "\n};\n1";
507		996
508	eval $source	997	eval $source
509	or die "$path: $@";	998	or die $@ ? "$path: $@\n"
		999	: "extension disabled.\n";
510		1000
511	push @exts, $pkg;	1001	push @exts, $pkg;
512	$ext_pkg{$base} = $pkg;	1002	$ext_pkg{$base} = $pkg;
513		1003
514	# no strict 'refs';	1004	# no strict 'refs';
…		…
527	# for my $idx (0 .. $#PLUGIN_EVENT) {	1017	# for my $idx (0 .. $#PLUGIN_EVENT) {
528	# delete $hook[$idx]{$pkg};	1018	# delete $hook[$idx]{$pkg};
529	# }	1019	# }
530		1020
531	# remove commands	1021	# remove commands
532	for my $name (keys %command) {	1022	for my $name (keys %COMMAND) {
533	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1023	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
534		1024
535	if (@cb) {	1025	if (@cb) {
536	$command{$name} = \@cb;	1026	$COMMAND{$name} = \@cb;
537	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
538	} else {	1027	} else {
539	delete $command{$name};
540	delete $COMMAND{"$name\000"};	1028	delete $COMMAND{$name};
541	}	1029	}
542	}	1030	}
543		1031
544	# remove extcmds	1032	# remove extcmds
545	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1033	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
546	delete $extcmd{$name};	1034	delete $EXTCMD{$name};
547	}	1035	}
548		1036
549	if (my $cb = $pkg->can ("unload")) {	1037	if (my $cb = $pkg->can ("unload")) {
550	eval {	1038	eval {
551	$cb->($pkg);	1039	$cb->($pkg);
…		…
555		1043
556	Symbol::delete_package $pkg;	1044	Symbol::delete_package $pkg;
557	}	1045	}
558		1046
559	sub load_extensions {	1047	sub load_extensions {
560	my $LIBDIR = maps_directory "perl";
561
562	for my $ext (<$LIBDIR/*.ext>) {	1048	for my $ext (<$LIBDIR/*.ext>) {
563	next unless -r $ext;	1049	next unless -r $ext;
564	eval {	1050	eval {
565	load_extension $ext;	1051	load_extension $ext;
566	1	1052	1
567	} or warn "$ext not loaded: $@";	1053	} or warn "$ext not loaded: $@";
568	}	1054	}
569	}	1055	}
570		1056
571	sub _perl_reload(&) {
572	my ($msg) = @_;
573
574	$msg->("reloading...");
575
576	eval {
577	# 1. cancel all watchers
578	$_->cancel for Event::all_watchers;
579
580	# 2. unload all extensions
581	for (@exts) {
582	$msg->("unloading <$_>");
583	unload_extension $_;
584	}
585
586	# 3. unload all modules loaded from $LIBDIR
587	while (my ($k, $v) = each %INC) {
588	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
589
590	$msg->("removing <$k>");
591	delete $INC{$k};
592
593	$k =~ s/\.pm$//;
594	$k =~ s/\//::/g;
595
596	if (my $cb = $k->can ("unload_module")) {
597	$cb->();
598	}
599
600	Symbol::delete_package $k;
601	}
602
603	# 4. get rid of safe::, as good as possible
604	Symbol::delete_package "safe::$_"
605	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
606
607	# 5. remove register_script_function callbacks
608	# TODO
609
610	# 6. unload cf.pm "a bit"
611	delete $INC{"cf.pm"};
612
613	# don't, removes xs symbols, too,
614	# and global variables created in xs
615	#Symbol::delete_package __PACKAGE__;
616
617	# 7. reload cf.pm
618	$msg->("reloading cf.pm");
619	require cf;
620	};
621	$msg->($@) if $@;
622
623	$msg->("reloaded");
624	};
625
626	sub perl_reload() {
627	_perl_reload {
628	warn $_[0];
629	print "$_[0]\n";
630	};
631	}
632
633	register_command "perl-reload", 0, sub {
634	my ($who, $arg) = @_;
635
636	if ($who->flag (FLAG_WIZ)) {
637	_perl_reload {
638	warn $_[0];
639	$who->message ($_[0]);
640	};
641	}
642	};
643
644	#############################################################################
645	# extcmd framework, basically convert ext <msg>
646	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
647
648	attach_to_players
649	on_extcmd => sub {
650	my ($pl, $buf) = @_;
651
652	my $msg = eval { from_json $buf };
653
654	if (ref $msg) {
655	if (my $cb = $extcmd{$msg->{msgtype}}) {
656	if (my %reply = $cb->[0]->($pl, $msg)) {
657	$pl->ext_reply ($msg->{msgid}, %reply);
658	}
659	}
660	} else {
661	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
662	}
663
664	cf::override;
665	},
666	;
667
668	#############################################################################	1057	#############################################################################
669	# load/save/clean perl data associated with a map	1058	# load/save/clean perl data associated with a map
670		1059
671	*cf::mapsupport::on_clean = sub {	1060	*cf::mapsupport::on_clean = sub {
672	my ($map) = @_;	1061	my ($map) = @_;
673		1062
674	my $path = $map->tmpname;	1063	my $path = $map->tmpname;
675	defined $path or return;	1064	defined $path or return;
676		1065
677	unlink "$path.cfperl";
678	unlink "$path.pst";	1066	unlink "$path.pst";
679	};	1067	};
680		1068
681	*cf::mapsupport::on_swapin =
682	*cf::mapsupport::on_load = sub {
683	my ($map) = @_;
684
685	my $path = $map->tmpname;
686	$path = $map->path unless defined $path;
687
688	open my $fh, "<:raw", "$path.cfperl"
689	or return; # no perl data
690
691	my $data = Storable::thaw do { local $/; <$fh> };
692
693	$data->{version} <= 1
694	or return; # too new
695
696	$map->_set_obs ($data->{obs});
697	};
698
699	attach_to_maps prio => -10000, package => cf::mapsupport::;	1069	cf::map->attach (prio => -10000, package => cf::mapsupport::);
700		1070
701	#############################################################################	1071	#############################################################################
702	# load/save perl data associated with player->ob objects	1072	# load/save perl data associated with player->ob objects
703		1073
704	sub all_objects(@) {	1074	sub all_objects(@) {
705	@_, map all_objects ($_->inv), @_	1075	@_, map all_objects ($_->inv), @_
706	}	1076	}
707		1077
708	attach_to_players	1078	# TODO: compatibility cruft, remove when no longer needed
		1079	cf::player->attach (
709	on_load => sub {	1080	on_load => sub {
710	my ($pl, $path) = @_;	1081	my ($pl, $path) = @_;
711		1082
712	for my $o (all_objects $pl->ob) {	1083	for my $o (all_objects $pl->ob) {
713	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1084	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
715		1086
716	%$o = %{ Storable::thaw pack "H*", $value };	1087	%$o = %{ Storable::thaw pack "H*", $value };
717	}	1088	}
718	}	1089	}
719	},	1090	},
720	;	1091	);
721		1092
722	#############################################################################	1093	#############################################################################
723	# 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
724		1102
725	=item cf::player::exists $login	1103	=item cf::player::exists $login
726		1104
727	Returns true when the given account exists.	1105	Returns true when the given account exists.
728		1106
…		…
731	sub cf::player::exists($) {	1109	sub cf::player::exists($) {
732	cf::player::find $_[0]	1110	cf::player::find $_[0]
733	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1111	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
734	}	1112	}
735		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
736	=item $player->reply ($npc, $msg[, $flags])	1437	=item $player_object->reply ($npc, $msg[, $flags])
737		1438
738	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>
739	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
740	dialogue with the given NPC character.	1441	dialogue with the given NPC character.
741		1442
742	=cut	1443	=cut
743		1444
744	# rough implementation of a future "reply" method that works	1445	# rough implementation of a future "reply" method that works
745	# with dialog boxes.	1446	# with dialog boxes.
		1447	#TODO: the first argument must go, split into a $npc->reply_to ( method
746	sub cf::object::player::reply($$$;$) {	1448	sub cf::object::player::reply($$$;$) {
747	my ($self, $npc, $msg, $flags) = @_;	1449	my ($self, $npc, $msg, $flags) = @_;
748		1450
749	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1451	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
750		1452
…		…
754	$msg = $npc->name . " says: $msg" if $npc;	1456	$msg = $npc->name . " says: $msg" if $npc;
755	$self->message ($msg, $flags);	1457	$self->message ($msg, $flags);
756	}	1458	}
757	}	1459	}
758		1460
759	=item $player->ext_reply ($msgid, $msgtype, %msg)	1461	=item $player_object->may ("access")
760		1462
761	Sends an ext reply to the player.	1463	Returns wether the given player is authorized to access resource "access"
		1464	(e.g. "command_wizcast").
762		1465
763	=cut	1466	=cut
764		1467
765	sub cf::player::ext_reply($$$%) {	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	$exit->msg (undef);
		1637	}
		1638	}
		1639
		1640	sub cf::object::player::enter_exit {
766	my ($self, $id, %msg) = @_;	1641	my ($self, $exit) = @_;
767		1642
768	$msg{msgid} = $id;	1643	return unless $self->type == cf::PLAYER;
769		1644
770	$self->send ("ext " . to_json \%msg);	1645	$self->enter_link;
771	}
772		1646
773	#############################################################################	1647	(cf::async {
774	# map scripting support	1648	unless (eval {
		1649	prepare_random_map $exit
		1650	if $exit->slaying eq "/!";
		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
775		1779
776	our $safe = new Safe "safe";	1780	our $safe = new Safe "safe";
777	our $safe_hole = new Safe::Hole;	1781	our $safe_hole = new Safe::Hole;
778		1782
779	$SIG{FPE} = 'IGNORE';	1783	$SIG{FPE} = 'IGNORE';
780		1784
781	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1785	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
782		1786
783	# here we export the classes and methods available to script code	1787	# here we export the classes and methods available to script code
784		1788
		1789	=pod
		1790
		1791	The following fucntions and emthods are available within a safe environment:
		1792
		1793	cf::object contr pay_amount pay_player map
		1794	cf::object::player player
		1795	cf::player peaceful
		1796	cf::map trigger
		1797
		1798	=cut
		1799
785	for (	1800	for (
786	["cf::object" => qw(contr pay_amount pay_player)],	1801	["cf::object" => qw(contr pay_amount pay_player map)],
787	["cf::object::player" => qw(player)],	1802	["cf::object::player" => qw(player)],
788	["cf::player" => qw(peaceful)],	1803	["cf::player" => qw(peaceful)],
		1804	["cf::map" => qw(trigger)],
789	) {	1805	) {
790	no strict 'refs';	1806	no strict 'refs';
791	my ($pkg, @funs) = @$_;	1807	my ($pkg, @funs) = @$_;
792	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1808	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
793	for @funs;	1809	for @funs;
794	}	1810	}
		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 + $second', first => 1, second => 4;
		1821
		1822	=cut
795		1823
796	sub safe_eval($;@) {	1824	sub safe_eval($;@) {
797	my ($code, %vars) = @_;	1825	my ($code, %vars) = @_;
798		1826
799	my $qcode = $code;	1827	my $qcode = $code;
…		…
822	}	1850	}
823		1851
824	wantarray ? @res : $res[0]	1852	wantarray ? @res : $res[0]
825	}	1853	}
826		1854
		1855	=item cf::register_script_function $function => $cb
		1856
		1857	Register a function that can be called from within map/npc scripts. The
		1858	function should be reasonably secure and should be put into a package name
		1859	like the extension.
		1860
		1861	Example: register a function that gets called whenever a map script calls
		1862	C<rent::overview>, as used by the C<rent> extension.
		1863
		1864	cf::register_script_function "rent::overview" => sub {
		1865	...
		1866	};
		1867
		1868	=cut
		1869
827	sub register_script_function {	1870	sub register_script_function {
828	my ($fun, $cb) = @_;	1871	my ($fun, $cb) = @_;
829		1872
830	no strict 'refs';	1873	no strict 'refs';
831	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1874	*{"safe::$fun"} = $safe_hole->wrap ($cb);
832	}	1875	}
833		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
834	#############################################################################	1984	#############################################################################
835	# the server's main()	1985	# the server's main()
836		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
837	sub main {	1995	sub main {
		1996	# we must not ever block the main coroutine
		1997	local $Coro::idle = sub {
		1998	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1999	(Coro::unblock_sub {
		2000	Event::one_event;
		2001	})->();
		2002	};
		2003
		2004	cfg_load;
		2005	db_load;
		2006	load_extensions;
838	Event::loop;	2007	Event::loop;
839	}	2008	}
840		2009
841	#############################################################################	2010	#############################################################################
842	# initialisation	2011	# initialisation
843		2012
		2013	sub reload() {
		2014	# can/must only be called in main
		2015	if ($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} = $LINK_MAP;
		2146	}
		2147
844	register "<global>", __PACKAGE__;	2148	register "<global>", __PACKAGE__;
845		2149
		2150	register_command "reload" => sub {
		2151	my ($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
846	unshift @INC, $LIBDIR;	2160	unshift @INC, $LIBDIR;
847		2161
848	load_extensions;
849
850	$TICK_WATCHER = Event->timer (	2162	$TICK_WATCHER = Event->timer (
		2163	reentrant => 0,
851	prio => 1,	2164	prio => 0,
852	at => $NEXT_TICK || 1,	2165	at => $NEXT_TICK || $TICK,
		2166	data => WF_AUTOCANCEL,
853	cb => sub {	2167	cb => sub {
		2168	unless ($FREEZE) {
854	cf::server_tick; # one server iteration	2169	cf::server_tick; # one server iteration
		2170	$RUNTIME += $TICK;
		2171	}
855		2172
856	my $NOW = Event::time;
857	$NEXT_TICK += $TICK;	2173	$NEXT_TICK += $TICK;
858		2174
859	# if we are delayed by four ticks, skip them all	2175	# if we are delayed by four ticks or more, skip them all
860	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2176	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
861		2177
862	$TICK_WATCHER->at ($NEXT_TICK);	2178	$TICK_WATCHER->at ($NEXT_TICK);
863	$TICK_WATCHER->start;	2179	$TICK_WATCHER->start;
864	},	2180	},
865	);	2181	);
866		2182
867	_reload_2;	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 }
868		2206
869	1	2207	1
870		2208

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