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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.46 by root, Sun Aug 27 16:15:12 2006 UTC vs.
Revision 1.132 by root, Thu Jan 4 01:35:56 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 %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;
20	our $LIBDIR = maps_directory "perl";
21		41
22	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	43	our $TICK_WATCHER;
24	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	our $EMERGENCY_POSITION;
		77
		78	#############################################################################
		79
		80	=head2 GLOBAL VARIABLES
		81
		82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
		92
		93	=item $cf::LIBDIR
		94
		95	The perl library directory, where extensions and cf-specific modules can
		96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
		101
		102	=item $cf::TICK
		103
		104	The interval between server ticks, in seconds.
		105
		106	=item %cf::CFG
		107
		108	Configuration for the server, loaded from C</etc/crossfire/config>, or
		109	from wherever your confdir points to.
		110
		111	=back
		112
		113	=cut
25		114
26	BEGIN {	115	BEGIN {
27	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
29	$msg .= "\n"	120	$msg .= "\n"
30	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
31		122
32	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	123	LOG llevError, "cfperl: $msg";
34	};	124	};
35	}	125	}
36		126
37	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38		128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39	# generate property mutators	129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40	sub prop_gen {	130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41	my ($prefix, $class) = @_;	131	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
42
43	no strict 'refs';
44
45	for my $prop (keys %PROP_TYPE) {
46	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
47	my $sub = lc $1;
48
49	my $type = $PROP_TYPE{$prop};
50	my $idx = $PROP_IDX {$prop};
51
52	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
53	$_[0]->get_property ($type, $idx)
54	};
55
56	*{"$class\::set_$sub"} = sub {
57	$_[0]->set_property ($type, $idx, $_[1]);
58	} unless $ignore_set{$prop};
59	}
60	}
61
62	# auto-generate most of the API
63
64	prop_gen OBJECT_PROP => "cf::object";
65	# CFAPI_OBJECT_ANIMATION?
66	prop_gen PLAYER_PROP => "cf::object::player";
67
68	prop_gen MAP_PROP => "cf::map";
69	prop_gen ARCH_PROP => "cf::arch";
70
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		133
73	# we bless all objects into (empty) derived classes to force a method lookup	134	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	135	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
76	no strict 'refs';	143	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	145	}
79		146
80	$Event::DIED = sub {	147	$Event::DIED = sub {
…		…
82	};	149	};
83		150
84	my %ext_pkg;	151	my %ext_pkg;
85	my @exts;	152	my @exts;
86	my @hook;	153	my @hook;
87	my %command;
88	my %extcmd;
89		154
90	#############################################################################	155	=head2 UTILITY FUNCTIONS
91	# utility functions	156
		157	=over 4
		158
		159	=cut
92		160
93	use JSON::Syck (); # TODO# replace by JSON::PC once working	161	use JSON::Syck (); # TODO# replace by JSON::PC once working
		162
		163	=item $ref = cf::from_json $json
		164
		165	Converts a JSON string into the corresponding perl data structure.
		166
		167	=cut
94		168
95	sub from_json($) {	169	sub from_json($) {
96	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	170	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97	JSON::Syck::Load $_[0]	171	JSON::Syck::Load $_[0]
98	}	172	}
99		173
		174	=item $json = cf::to_json $ref
		175
		176	Converts a perl data structure into its JSON representation.
		177
		178	=cut
		179
100	sub to_json($) {	180	sub to_json($) {
101	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102	JSON::Syck::Dump $_[0]	182	JSON::Syck::Dump $_[0]
103	}	183	}
104		184
		185	=item my $guard = cf::guard { BLOCK }
		186
		187	Run the given callback when the guard object gets destroyed (useful for
		188	coroutine cancellations).
		189
		190	You can call C<< ->cancel >> on the guard object to stop the block from
		191	being executed.
		192
		193	=cut
		194
		195	sub guard(&) {
		196	bless \(my $cb = $_[0]), cf::guard::;
		197	}
		198
		199	sub cf::guard::cancel {
		200	${$_[0]} = sub { };
		201	}
		202
		203	sub cf::guard::DESTROY {
		204	${$_[0]}->();
		205	}
		206
		207	=item cf::lock_wait $string
		208
		209	Wait until the given lock is available. See cf::lock_acquire.
		210
		211	=item my $lock = cf::lock_acquire $string
		212
		213	Wait until the given lock is available and then acquires it and returns
		214	a guard object. If the guard object gets destroyed (goes out of scope,
		215	for example when the coroutine gets canceled), the lock is automatically
		216	returned.
		217
		218	Lock names should begin with a unique identifier (for example, find_map
		219	uses map_find and load_map uses map_load).
		220
		221	=cut
		222
		223	our %LOCK;
		224
		225	sub lock_wait($) {
		226	my ($key) = @_;
		227
		228	# wait for lock, if any
		229	while ($LOCK{$key}) {
		230	push @{ $LOCK{$key} }, $Coro::current;
		231	Coro::schedule;
		232	}
		233	}
		234
		235	sub lock_acquire($) {
		236	my ($key) = @_;
		237
		238	# wait, to be sure we are not locked
		239	lock_wait $key;
		240
		241	$LOCK{$key} = [];
		242
		243	cf::guard {
		244	# wake up all waiters, to be on the safe side
		245	$_->ready for @{ delete $LOCK{$key} };
		246	}
		247	}
		248
		249	=item cf::async { BLOCK }
		250
		251	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		252	error instead of exiting the server in case of a problem.
		253
		254	=cut
		255
		256	sub async(&) {
		257	my ($cb) = @_;
		258
		259	Coro::async {
		260	eval { $cb->() };
		261	warn $@ if $@;
		262	}
		263	}
		264
		265	=item cf::sync_job { BLOCK }
		266
		267	The design of crossfire+ requires that the main coro ($Coro::main) is
		268	always able to handle events or runnable, as crossfire+ is only partly
		269	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		270
		271	If it must be done, put the blocking parts into C<sync_job>. This will run
		272	the given BLOCK in another coroutine while waiting for the result. The
		273	server will be frozen during this time, so the block should either finish
		274	fast or be very important.
		275
		276	=cut
		277
		278	sub sync_job(&) {
		279	my ($job) = @_;
		280
		281	if ($Coro::current == $Coro::main) {
		282	# this is the main coro, too bad, we have to block
		283	# till the operation succeeds, freezing the server :/
		284
		285	# TODO: use suspend/resume instead
		286	# (but this is cancel-safe)
		287	local $FREEZE = 1;
		288
		289	my $busy = 1;
		290	my @res;
		291
		292	(Coro::async {
		293	@res = eval { $job->() };
		294	warn $@ if $@;
		295	undef $busy;
		296	})->prio (Coro::PRIO_MAX);
		297
		298	while ($busy) {
		299	Coro::cede_notself;
		300	Event::one_event unless Coro::nready;
		301	}
		302
		303	wantarray ? @res : $res[0]
		304	} else {
		305	# we are in another coroutine, how wonderful, everything just works
		306
		307	$job->()
		308	}
		309	}
		310
		311	=item $coro = cf::coro { BLOCK }
		312
		313	Creates and returns a new coro. This coro is automcatially being canceled
		314	when the extension calling this is being unloaded.
		315
		316	=cut
		317
		318	sub coro(&) {
		319	my $cb = shift;
		320
		321	my $coro = &cf::async ($cb);
		322
		323	$coro->on_destroy (sub {
		324	delete $EXT_CORO{$coro+0};
		325	});
		326	$EXT_CORO{$coro+0} = $coro;
		327
		328	$coro
		329	}
		330
		331	sub write_runtime {
		332	my $runtime = cf::localdir . "/runtime";
		333
		334	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		335	or return;
		336
		337	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		338	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		339	and return;
		340
		341	aio_fsync $fh
		342	and return;
		343
		344	close $fh
		345	or return;
		346
		347	aio_rename "$runtime~", $runtime
		348	and return;
		349
		350	1
		351	}
		352
		353	=back
		354
		355	=cut
		356
105	#############################################################################	357	#############################################################################
106	# "new" plug-in system
107		358
108	=item $object->attach ($attachment, ...)	359	package cf::path;
109		360
110	Attach a pre-registered attachment to an object.	361	sub new {
		362	my ($class, $path, $base) = @_;
111		363
112	=item $player->attach ($attachment, ...)	364	$path = $path->as_string if ref $path;
113		365
114	Attach a pre-registered attachment to a player.	366	my $self = bless { }, $class;
115		367
116	=item $map->attach ($attachment, ...) # not yet persistent	368	# {... are special paths that are not touched
		369	# ?xxx/... are special absolute paths
		370	# ?random/... random maps
		371	# /! non-realised random map exit
		372	# /... normal maps
		373	# ~/... per-player maps without a specific player (DO NOT USE)
		374	# ~user/... per-player map of a specific user
117		375
118	Attach a pre-registered attachment to a map.	376	if ($path =~ /^{/) {
		377	# fine as it is
		378	} elsif ($path =~ s{^\?random/}{}) {
		379	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		380	$self->{random} = cf::from_json $data;
		381	} else {
		382	if ($path =~ s{^~([^/]+)?}{}) {
		383	$self->{user_rel} = 1;
119		384
120	=item cf::attach_global ...	385	if (defined $1) {
		386	$self->{user} = $1;
		387	} elsif ($base =~ m{^~([^/]+)/}) {
		388	$self->{user} = $1;
		389	} else {
		390	warn "cannot resolve user-relative path without user <$path,$base>\n";
		391	}
		392	} elsif ($path =~ /^\//) {
		393	# already absolute
		394	} else {
		395	$base =~ s{[^/]+/?$}{};
		396	return $class->new ("$base/$path");
		397	}
121		398
122	Attach handlers for global events.	399	for ($path) {
		400	redo if s{/\.?/}{/};
		401	redo if s{/[^/]+/\.\./}{/};
		402	}
		403	}
123		404
124	This and all following C<attach_*>-functions expect any number of the	405	$self->{path} = $path;
125	following handler/hook descriptions:	406
		407	$self
		408	}
		409
		410	# the name / primary key / in-game path
		411	sub as_string {
		412	my ($self) = @_;
		413
		414	$self->{user_rel} ? "~$self->{user}$self->{path}"
		415	: $self->{random} ? "?random/$self->{path}"
		416	: $self->{path}
		417	}
		418
		419	# the displayed name, this is a one way mapping
		420	sub visible_name {
		421	my ($self) = @_;
		422
		423	# if (my $rmp = $self->{random}) {
		424	# # todo: be more intelligent about this
		425	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		426	# } else {
		427	$self->as_string
		428	# }
		429	}
		430
		431	# escape the /'s in the path
		432	sub _escaped_path {
		433	# ∕ is U+2215
		434	(my $path = $_[0]{path}) =~ s/\//∕/g;
		435	$path
		436	}
		437
		438	# the original (read-only) location
		439	sub load_path {
		440	my ($self) = @_;
		441
		442	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		443	}
		444
		445	# the temporary/swap location
		446	sub save_path {
		447	my ($self) = @_;
		448
		449	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		450	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		451	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		452	}
		453
		454	# the unique path, might be eq to save_path
		455	sub uniq_path {
		456	my ($self) = @_;
		457
		458	$self->{user_rel} || $self->{random}
		459	? undef
		460	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		461	}
		462
		463	# return random map parameters, or undef
		464	sub random_map_params {
		465	my ($self) = @_;
		466
		467	$self->{random}
		468	}
		469
		470	# this is somewhat ugly, but style maps do need special treatment
		471	sub is_style_map {
		472	$_[0]{path} =~ m{^/styles/}
		473	}
		474
		475	package cf;
		476
		477	#############################################################################
		478
		479	=head2 ATTACHABLE OBJECTS
		480
		481	Many objects in crossfire are so-called attachable objects. That means you can
		482	attach callbacks/event handlers (a collection of which is called an "attachment")
		483	to it. All such attachable objects support the following methods.
		484
		485	In the following description, CLASS can be any of C<global>, C<object>
		486	C<player>, C<client> or C<map> (i.e. the attachable objects in
		487	crossfire+).
		488
		489	=over 4
		490
		491	=item $attachable->attach ($attachment, key => $value...)
		492
		493	=item $attachable->detach ($attachment)
		494
		495	Attach/detach a pre-registered attachment to a specific object and give it
		496	the specified key/value pairs as arguments.
		497
		498	Example, attach a minesweeper attachment to the given object, making it a
		499	10x10 minesweeper game:
		500
		501	$obj->attach (minesweeper => width => 10, height => 10);
		502
		503	=item $bool = $attachable->attached ($name)
		504
		505	Checks wether the named attachment is currently attached to the object.
		506
		507	=item cf::CLASS->attach ...
		508
		509	=item cf::CLASS->detach ...
		510
		511	Define an anonymous attachment and attach it to all objects of the given
		512	CLASS. See the next function for an explanation of its arguments.
		513
		514	You can attach to global events by using the C<cf::global> class.
		515
		516	Example, log all player logins:
		517
		518	cf::player->attach (
		519	on_login => sub {
		520	my ($pl) = @_;
		521	...
		522	},
		523	);
		524
		525	Example, attach to the jeweler skill:
		526
		527	cf::object->attach (
		528	type => cf::SKILL,
		529	subtype => cf::SK_JEWELER,
		530	on_use_skill => sub {
		531	my ($sk, $ob, $part, $dir, $msg) = @_;
		532	...
		533	},
		534	);
		535
		536	=item cf::CLASS::attachment $name, ...
		537
		538	Register an attachment by C<$name> through which attachable objects of the
		539	given CLASS can refer to this attachment.
		540
		541	Some classes such as crossfire maps and objects can specify attachments
		542	that are attached at load/instantiate time, thus the need for a name.
		543
		544	These calls expect any number of the following handler/hook descriptions:
126		545
127	=over 4	546	=over 4
128		547
129	=item prio => $number	548	=item prio => $number
130		549
…		…
132	by another C<prio> setting). Lower priority handlers get executed	551	by another C<prio> setting). Lower priority handlers get executed
133	earlier. The default priority is C<0>, and many built-in handlers are	552	earlier. The default priority is C<0>, and many built-in handlers are
134	registered at priority C<-1000>, so lower priorities should not be used	553	registered at priority C<-1000>, so lower priorities should not be used
135	unless you know what you are doing.	554	unless you know what you are doing.
136		555
		556	=item type => $type
		557
		558	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		559	given type of objects only (the additional parameter C<subtype> can be
		560	used to further limit to the given subtype).
		561
137	=item on_I<event> => \&cb	562	=item on_I<event> => \&cb
138		563
139	Call the given code reference whenever the named event happens (event is	564	Call the given code reference whenever the named event happens (event is
140	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	565	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
141	handlers are recognised generally depends on the type of object these	566	handlers are recognised generally depends on the type of object these
…		…
150	package and register them. Only handlers for eevents supported by the	575	package and register them. Only handlers for eevents supported by the
151	object/class are recognised.	576	object/class are recognised.
152		577
153	=back	578	=back
154		579
155	=item cf::attach_to_type $object_type, ...	580	Example, define an attachment called "sockpuppet" that calls the given
		581	event handler when a monster attacks:
156		582
157	Attach handlers for a specific object type (e.g. TRANSPORT).	583	cf::object::attachment sockpuppet =>
		584	on_skill_attack => sub {
		585	my ($self, $victim) = @_;
		586	...
		587	}
		588	}
158		589
159	=item cf::attach_to_objects ...	590	=item $attachable->valid
160		591
161	Attach handlers to all objects. Do not use this except for debugging or	592	Just because you have a perl object does not mean that the corresponding
162	very rare events, as handlers are (obviously) called for I<all> objects in	593	C-level object still exists. If you try to access an object that has no
163	the game.	594	valid C counterpart anymore you get an exception at runtime. This method
164		595	can be used to test for existence of the C object part without causing an
165	=item cf::attach_to_players ...	596	exception.
166
167	Attach handlers to all players.
168
169	=item cf::attach_to_maps ...
170
171	Attach handlers to all maps.
172
173	=item cf:register_attachment $name, ...
174		597
175	=cut	598	=cut
176		599
177	# the following variables are defined in .xs and must not be re-created	600	# the following variables are defined in .xs and must not be re-created
178	our @CB_GLOBAL = (); # registry for all global events	601	our @CB_GLOBAL = (); # registry for all global events
		602	our @CB_ATTACHABLE = (); # registry for all attachables
179	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	603	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
180	our @CB_PLAYER = ();	604	our @CB_PLAYER = ();
		605	our @CB_CLIENT = ();
181	our @CB_TYPE = (); # registry for type (cf-object class) based events	606	our @CB_TYPE = (); # registry for type (cf-object class) based events
182	our @CB_MAP = ();	607	our @CB_MAP = ();
183		608
184	my %attachment;	609	my %attachment;
185		610
186	sub _attach_cb($\%$$$) {	611	sub _attach_cb($$$$) {
187	my ($registry, $undo, $event, $prio, $cb) = @_;	612	my ($registry, $event, $prio, $cb) = @_;
188		613
189	use sort 'stable';	614	use sort 'stable';
190		615
191	$cb = [$prio, $cb];	616	$cb = [$prio, $cb];
192		617
193	@{$registry->[$event]} = sort	618	@{$registry->[$event]} = sort
194	{ $a->[0] cmp $b->[0] }	619	{ $a->[0] cmp $b->[0] }
195	@{$registry->[$event] || []}, $cb;	620	@{$registry->[$event] || []}, $cb;
196
197	push @{$undo->{cb}}, [$event, $cb];
198	}	621	}
		622
		623	# hack
		624	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
199		625
200	# attach handles attaching event callbacks	626	# attach handles attaching event callbacks
201	# the only thing the caller has to do is pass the correct	627	# the only thing the caller has to do is pass the correct
202	# registry (== where the callback attaches to).	628	# registry (== where the callback attaches to).
203	sub _attach(\@$@) {	629	sub _attach {
204	my ($registry, $klass, @arg) = @_;	630	my ($registry, $klass, @arg) = @_;
205		631
		632	my $object_type;
206	my $prio = 0;	633	my $prio = 0;
207
208	my %undo = (
209	registry => $registry,
210	cb => [],
211	);
212
213	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	634	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		635
		636	#TODO: get rid of this hack
		637	if ($attachable_klass{$klass}) {
		638	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		639	}
214		640
215	while (@arg) {	641	while (@arg) {
216	my $type = shift @arg;	642	my $type = shift @arg;
217		643
218	if ($type eq "prio") {	644	if ($type eq "prio") {
219	$prio = shift @arg;	645	$prio = shift @arg;
220		646
		647	} elsif ($type eq "type") {
		648	$object_type = shift @arg;
		649	$registry = $CB_TYPE[$object_type] ||= [];
		650
		651	} elsif ($type eq "subtype") {
		652	defined $object_type or Carp::croak "subtype specified without type";
		653	my $object_subtype = shift @arg;
		654	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		655
221	} elsif ($type eq "package") {	656	} elsif ($type eq "package") {
222	my $pkg = shift @arg;	657	my $pkg = shift @arg;
223		658
224	while (my ($name, $id) = each %cb_id) {	659	while (my ($name, $id) = each %cb_id) {
225	if (my $cb = $pkg->can ($name)) {	660	if (my $cb = $pkg->can ($name)) {
226	_attach_cb $registry, %undo, $id, $prio, $cb;	661	_attach_cb $registry, $id, $prio, $cb;
227	}	662	}
228	}	663	}
229		664
230	} elsif (exists $cb_id{$type}) {	665	} elsif (exists $cb_id{$type}) {
231	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	666	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
232		667
233	} elsif (ref $type) {	668	} elsif (ref $type) {
234	warn "attaching objects not supported, ignoring.\n";	669	warn "attaching objects not supported, ignoring.\n";
235		670
236	} else {	671	} else {
237	shift @arg;	672	shift @arg;
238	warn "attach argument '$type' not supported, ignoring.\n";	673	warn "attach argument '$type' not supported, ignoring.\n";
239	}	674	}
240	}	675	}
241
242	\%undo
243	}	676	}
244		677
245	sub _attach_attachment {	678	sub _object_attach {
246	my ($klass, $obj, $name, @args) = q_;	679	my ($obj, $name, %arg) = @_;
247		680
248	my $res;	681	return if exists $obj->{_attachment}{$name};
249		682
250	if (my $attach = $attachment{$name}) {	683	if (my $attach = $attachment{$name}) {
251	my $registry = $obj->registry;	684	my $registry = $obj->registry;
252		685
		686	for (@$attach) {
		687	my ($klass, @attach) = @$_;
253	$res = _attach @$registry, $klass, @$attach;	688	_attach $registry, $klass, @attach;
254
255	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
256	for (@$cb) {
257	eval { $_->[1]->($obj, @args); };
258	if ($@) {
259	warn "$@";
260	warn "... while processing '$name' instantiate with args <@args>.\n";
261	}
262	}	689	}
263	}	690
		691	$obj->{$name} = \%arg;
264	} else {	692	} else {
265	warn "object uses attachment '$name' that is not available, postponing.\n";	693	warn "object uses attachment '$name' that is not available, postponing.\n";
266	}	694	}
267		695
268	push @{$obj->{_attachment}}, $name;	696	$obj->{_attachment}{$name} = undef;
269
270	$res->{attachment} = $name;
271	$res
272	}	697	}
273		698
274	sub cf::object::attach {	699	sub cf::attachable::attach {
		700	if (ref $_[0]) {
		701	_object_attach @_;
		702	} else {
		703	_attach shift->_attach_registry, @_;
		704	}
		705	};
		706
		707	# all those should be optimised
		708	sub cf::attachable::detach {
275	my ($obj, $name, @args) = @_;	709	my ($obj, $name) = @_;
276		710
277	_attach_attachment KLASS_OBJECT, $obj, $name, @args;	711	if (ref $obj) {
278	}	712	delete $obj->{_attachment}{$name};
		713	reattach ($obj);
		714	} else {
		715	Carp::croak "cannot, currently, detach class attachments";
		716	}
		717	};
279		718
280	sub cf::player::attach {	719	sub cf::attachable::attached {
281	my ($obj, $name, @args) = @_;	720	my ($obj, $name) = @_;
282		721
283	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	722	exists $obj->{_attachment}{$name}
284	}	723	}
285		724
286	sub cf::map::attach {	725	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
287	my ($obj, $name, @args) = @_;	726	eval "#line " . __LINE__ . " 'cf.pm'
		727	sub cf::\L$klass\E::_attach_registry {
		728	(\\\@CB_$klass, KLASS_$klass)
		729	}
288		730
289	_attach_attachment KLASS_MAP, $obj, $name, @args;	731	sub cf::\L$klass\E::attachment {
290	}
291
292	sub attach_global {
293	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
294	}
295
296	sub attach_to_type {
297	my $type = shift;
298
299	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	732	my \$name = shift;
316		733
317	$attachment{$name} = [@_];	734	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		735	}
		736	";
		737	die if $@;
318	}	738	}
319		739
320	our $override;	740	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	741	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		742
…		…
336	for (@$callbacks) {	756	for (@$callbacks) {
337	eval { &{$_->[1]} };	757	eval { &{$_->[1]} };
338		758
339	if ($@) {	759	if ($@) {
340	warn "$@";	760	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	761	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	762	override;
343	}	763	}
344		764
345	return 1 if $override;	765	return 1 if $override;
346	}	766	}
347		767
348	0	768	0
349	}	769	}
		770
		771	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		772
		773	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		774
		775	Generate an object-specific event with the given arguments.
		776
		777	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		778	removed in future versions), and there is no public API to access override
		779	results (if you must, access C<@cf::invoke_results> directly).
		780
		781	=back
		782
		783	=cut
350		784
351	#############################################################################	785	#############################################################################
352	# object support	786	# object support
353		787
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361	attach $obj, $name, @{$args || [] };
362	}
363	}
364
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	788	sub reattach {
367	warn "reattach<@_>\n";#d#	789	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	790	my ($obj) = @_;
		791
369	my $registry = $obj->registry;	792	my $registry = $obj->registry;
370		793
		794	@$registry = ();
		795
		796	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		797
371	for my $name (@{ $obj->{_attachment} }) {	798	for my $name (keys %{ $obj->{_attachment} || {} }) {
372	if (my $attach = $attachment{$name}) {	799	if (my $attach = $attachment{$name}) {
		800	for (@$attach) {
		801	my ($klass, @attach) = @$_;
373	_attach @$registry, KLASS_OBJECT, @$attach;	802	_attach $registry, $klass, @attach;
		803	}
374	} else {	804	} else {
375	warn "object uses attachment '$name' that is not available, postponing.\n";	805	warn "object uses attachment '$name' that is not available, postponing.\n";
376	}	806	}
377	}	807	}
378
379	warn "reattach<@_, $_>\n";
380	}	808	}
		809
		810	cf::attachable->attach (
		811	prio => -1000000,
		812	on_instantiate => sub {
		813	my ($obj, $data) = @_;
		814
		815	$data = from_json $data;
		816
		817	for (@$data) {
		818	my ($name, $args) = @$_;
		819
		820	$obj->attach ($name, %{$args || {} });
		821	}
		822	},
		823	on_reattach => \&reattach,
		824	on_clone => sub {
		825	my ($src, $dst) = @_;
		826
		827	@{$dst->registry} = @{$src->registry};
		828
		829	%$dst = %$src;
		830
		831	%{$dst->{_attachment}} = %{$src->{_attachment}}
		832	if exists $src->{_attachment};
		833	},
		834	);
381		835
382	sub object_freezer_save {	836	sub object_freezer_save {
383	my ($filename, $objs) = @_;	837	my ($filename, $rdata, $objs) = @_;
384	warn "freeze $filename\n";#d#
385	use Data::Dumper; print Dumper $objs;
386		838
387	$filename .= ".pst";	839	sync_job {
		840	if (length $$rdata) {
		841	warn sprintf "saving %s (%d,%d)\n",
		842	$filename, length $$rdata, scalar @$objs;
388		843
389	if (@$objs) {	844	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	845	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	846	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	847	aio_fsync $fh;
393	close $fh;	848	close $fh;
		849
		850	if (@$objs) {
		851	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		852	chmod SAVE_MODE, $fh;
		853	my $data = Storable::nfreeze { version => 1, objs => $objs };
		854	aio_write $fh, 0, (length $data), $data, 0;
		855	aio_fsync $fh;
		856	close $fh;
		857	aio_rename "$filename.pst~", "$filename.pst";
		858	}
		859	} else {
		860	aio_unlink "$filename.pst";
		861	}
		862
394	rename "$filename~", $filename;	863	aio_rename "$filename~", $filename;
		864	} else {
		865	warn "FATAL: $filename~: $!\n";
		866	}
395	} else {	867	} else {
396	unlink $filename;	868	aio_unlink $filename;
		869	aio_unlink "$filename.pst";
		870	}
397	}	871	}
		872	}
		873
		874	sub object_freezer_as_string {
		875	my ($rdata, $objs) = @_;
		876
		877	use Data::Dumper;
		878
		879	$$rdata . Dumper $objs
398	}	880	}
399		881
400	sub object_thawer_load {	882	sub object_thawer_load {
401	my ($filename) = @_;	883	my ($filename) = @_;
402		884
403	warn "thaw $filename\n";#d#	885	my ($data, $av);
404		886
405	open my $fh, "<:raw:perlio", "$filename.pst"	887	(aio_load $filename, $data) >= 0
406	or return;	888	or return;
407		889
408	eval { local $/; (Storable::thaw <$fh>)->{objs} }	890	unless (aio_stat "$filename.pst") {
409	}	891	(aio_load "$filename.pst", $av) >= 0
410		892	or return;
411	attach_to_objects	893	$av = eval { (Storable::thaw $av)->{objs} };
412	prio => -1000000,
413	on_clone => sub {
414	my ($src, $dst) = @_;
415
416	@{$dst->registry} = @{$src->registry};
417	warn "registry clone ", join ":", @{$src->registry};#d#
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423
424	warn "clone<@_>\n";#d#
425	},	894	}
426	;	895
		896	warn sprintf "loading %s (%d)\n",
		897	$filename, length $data, scalar @{$av || []};#d#
		898	return ($data, $av);
		899	}
427		900
428	#############################################################################	901	#############################################################################
429	# old plug-in events	902	# command handling &c
430		903
431	sub inject_event {	904	=item cf::register_command $name => \&callback($ob,$args);
432	my $extension = shift;
433	my $event_code = shift;
434		905
435	my $cb = $hook[$event_code]{$extension}	906	Register a callback for execution when the client sends the user command
436	or return;	907	$name.
437		908
438	&$cb	909	=cut
439	}
440
441	sub inject_global_event {
442	my $event = shift;
443
444	my $cb = $hook[$event]
445	or return;
446
447	List::Util::max map &$_, values %$cb
448	}
449
450	sub inject_command {
451	my ($name, $obj, $params) = @_;
452
453	for my $cmd (@{ $command{$name} }) {
454	$cmd->[1]->($obj, $params);
455	}
456
457	-1
458	}
459		910
460	sub register_command {	911	sub register_command {
461	my ($name, $time, $cb) = @_;	912	my ($name, $cb) = @_;
462		913
463	my $caller = caller;	914	my $caller = caller;
464	#warn "registering command '$name/$time' to '$caller'";	915	#warn "registering command '$name/$time' to '$caller'";
465		916
466	push @{ $command{$name} }, [$time, $cb, $caller];	917	push @{ $COMMAND{$name} }, [$caller, $cb];
467	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
468	}	918	}
		919
		920	=item cf::register_extcmd $name => \&callback($pl,$packet);
		921
		922	Register a callbackf ro execution when the client sends an extcmd packet.
		923
		924	If the callback returns something, it is sent back as if reply was being
		925	called.
		926
		927	=cut
469		928
470	sub register_extcmd {	929	sub register_extcmd {
471	my ($name, $cb) = @_;	930	my ($name, $cb) = @_;
472		931
473	my $caller = caller;	932	my $caller = caller;
474	#warn "registering extcmd '$name' to '$caller'";	933	#warn "registering extcmd '$name' to '$caller'";
475		934
476	$extcmd{$name} = [$cb, $caller];	935	$EXTCMD{$name} = [$cb, $caller];
477	}	936	}
		937
		938	cf::player->attach (
		939	on_command => sub {
		940	my ($pl, $name, $params) = @_;
		941
		942	my $cb = $COMMAND{$name}
		943	or return;
		944
		945	for my $cmd (@$cb) {
		946	$cmd->[1]->($pl->ob, $params);
		947	}
		948
		949	cf::override;
		950	},
		951	on_extcmd => sub {
		952	my ($pl, $buf) = @_;
		953
		954	my $msg = eval { from_json $buf };
		955
		956	if (ref $msg) {
		957	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		958	if (my %reply = $cb->[0]->($pl, $msg)) {
		959	$pl->ext_reply ($msg->{msgid}, %reply);
		960	}
		961	}
		962	} else {
		963	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		964	}
		965
		966	cf::override;
		967	},
		968	);
478		969
479	sub register {	970	sub register {
480	my ($base, $pkg) = @_;	971	my ($base, $pkg) = @_;
481		972
482	#TODO	973	#TODO
…		…
501	. "#line 1 \"$path\"\n{\n"	992	. "#line 1 \"$path\"\n{\n"
502	. (do { local $/; <$fh> })	993	. (do { local $/; <$fh> })
503	. "\n};\n1";	994	. "\n};\n1";
504		995
505	eval $source	996	eval $source
506	or die "$path: $@";	997	or die $@ ? "$path: $@\n"
		998	: "extension disabled.\n";
507		999
508	push @exts, $pkg;	1000	push @exts, $pkg;
509	$ext_pkg{$base} = $pkg;	1001	$ext_pkg{$base} = $pkg;
510		1002
511	# no strict 'refs';	1003	# no strict 'refs';
…		…
524	# for my $idx (0 .. $#PLUGIN_EVENT) {	1016	# for my $idx (0 .. $#PLUGIN_EVENT) {
525	# delete $hook[$idx]{$pkg};	1017	# delete $hook[$idx]{$pkg};
526	# }	1018	# }
527		1019
528	# remove commands	1020	# remove commands
529	for my $name (keys %command) {	1021	for my $name (keys %COMMAND) {
530	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1022	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
531		1023
532	if (@cb) {	1024	if (@cb) {
533	$command{$name} = \@cb;	1025	$COMMAND{$name} = \@cb;
534	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
535	} else {	1026	} else {
536	delete $command{$name};
537	delete $COMMAND{"$name\000"};	1027	delete $COMMAND{$name};
538	}	1028	}
539	}	1029	}
540		1030
541	# remove extcmds	1031	# remove extcmds
542	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1032	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
543	delete $extcmd{$name};	1033	delete $EXTCMD{$name};
544	}	1034	}
545		1035
546	if (my $cb = $pkg->can ("unload")) {	1036	if (my $cb = $pkg->can ("unload")) {
547	eval {	1037	eval {
548	$cb->($pkg);	1038	$cb->($pkg);
…		…
552		1042
553	Symbol::delete_package $pkg;	1043	Symbol::delete_package $pkg;
554	}	1044	}
555		1045
556	sub load_extensions {	1046	sub load_extensions {
557	my $LIBDIR = maps_directory "perl";
558
559	for my $ext (<$LIBDIR/*.ext>) {	1047	for my $ext (<$LIBDIR/*.ext>) {
560	next unless -r $ext;	1048	next unless -r $ext;
561	eval {	1049	eval {
562	load_extension $ext;	1050	load_extension $ext;
563	1	1051	1
564	} or warn "$ext not loaded: $@";	1052	} or warn "$ext not loaded: $@";
565	}	1053	}
566	}	1054	}
567		1055
568	sub _perl_reload(&) {
569	my ($msg) = @_;
570
571	$msg->("reloading...");
572
573	eval {
574	# 1. cancel all watchers
575	$_->cancel for Event::all_watchers;
576
577	# 2. unload all extensions
578	for (@exts) {
579	$msg->("unloading <$_>");
580	unload_extension $_;
581	}
582
583	# 3. unload all modules loaded from $LIBDIR
584	while (my ($k, $v) = each %INC) {
585	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
586
587	$msg->("removing <$k>");
588	delete $INC{$k};
589
590	$k =~ s/\.pm$//;
591	$k =~ s/\//::/g;
592
593	if (my $cb = $k->can ("unload_module")) {
594	$cb->();
595	}
596
597	Symbol::delete_package $k;
598	}
599
600	# 4. get rid of safe::, as good as possible
601	Symbol::delete_package "safe::$_"
602	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
603
604	# 5. remove register_script_function callbacks
605	# TODO
606
607	# 6. unload cf.pm "a bit"
608	delete $INC{"cf.pm"};
609
610	# don't, removes xs symbols, too,
611	# and global variables created in xs
612	#Symbol::delete_package __PACKAGE__;
613
614	# 7. reload cf.pm
615	$msg->("reloading cf.pm");
616	require cf;
617	};
618	$msg->($@) if $@;
619
620	$msg->("reloaded");
621	};
622
623	sub perl_reload() {
624	_perl_reload {
625	warn $_[0];
626	print "$_[0]\n";
627	};
628	}
629
630	register_command "perl-reload", 0, sub {
631	my ($who, $arg) = @_;
632
633	if ($who->flag (FLAG_WIZ)) {
634	_perl_reload {
635	warn $_[0];
636	$who->message ($_[0]);
637	};
638	}
639	};
640
641	#############################################################################
642	# extcmd framework, basically convert ext <msg>
643	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
644
645	attach_to_players
646	on_extcmd => sub {
647	my ($pl, $buf) = @_;
648
649	my $msg = eval { from_json $buf };
650
651	if (ref $msg) {
652	if (my $cb = $extcmd{$msg->{msgtype}}) {
653	if (my %reply = $cb->[0]->($pl, $msg)) {
654	$pl->ext_reply ($msg->{msgid}, %reply);
655	}
656	}
657	} else {
658	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
659	}
660
661	cf::override;
662	},
663	;
664
665	#############################################################################	1056	#############################################################################
666	# load/save/clean perl data associated with a map	1057	# load/save/clean perl data associated with a map
667		1058
668	*cf::mapsupport::on_clean = sub {	1059	*cf::mapsupport::on_clean = sub {
669	my ($map) = @_;	1060	my ($map) = @_;
670		1061
671	my $path = $map->tmpname;	1062	my $path = $map->tmpname;
672	defined $path or return;	1063	defined $path or return;
673		1064
674	unlink "$path.cfperl";
675	unlink "$path.pst";	1065	unlink "$path.pst";
676	};	1066	};
677		1067
678	*cf::mapsupport::on_swapin =
679	*cf::mapsupport::on_load = sub {
680	my ($map) = @_;
681
682	my $path = $map->tmpname;
683	$path = $map->path unless defined $path;
684
685	open my $fh, "<:raw", "$path.cfperl"
686	or return; # no perl data
687
688	my $data = Storable::thaw do { local $/; <$fh> };
689
690	$data->{version} <= 1
691	or return; # too new
692
693	$map->_set_obs ($data->{obs});
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	1068	cf::map->attach (prio => -10000, package => cf::mapsupport::);
697		1069
698	#############################################################################	1070	#############################################################################
699	# load/save perl data associated with player->ob objects	1071	# load/save perl data associated with player->ob objects
700		1072
701	sub all_objects(@) {	1073	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_	1074	@_, map all_objects ($_->inv), @_
703	}	1075	}
704		1076
705	attach_to_players	1077	# TODO: compatibility cruft, remove when no longer needed
		1078	cf::player->attach (
706	on_load => sub {	1079	on_load => sub {
707	my ($pl, $path) = @_;	1080	my ($pl, $path) = @_;
708		1081
709	for my $o (all_objects $pl->ob) {	1082	for my $o (all_objects $pl->ob) {
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1083	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
712		1085
713	%$o = %{ Storable::thaw pack "H*", $value };	1086	%$o = %{ Storable::thaw pack "H*", $value };
714	}	1087	}
715	}	1088	}
716	},	1089	},
717	;	1090	);
718		1091
719	#############################################################################	1092	#############################################################################
720	# core extensions - in perl	1093
		1094	=head2 CORE EXTENSIONS
		1095
		1096	Functions and methods that extend core crossfire objects.
		1097
		1098	=head3 cf::player
		1099
		1100	=over 4
721		1101
722	=item cf::player::exists $login	1102	=item cf::player::exists $login
723		1103
724	Returns true when the given account exists.	1104	Returns true when the given account exists.
725		1105
…		…
728	sub cf::player::exists($) {	1108	sub cf::player::exists($) {
729	cf::player::find $_[0]	1109	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1110	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	1111	}
732		1112
		1113	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1114
		1115	Sends an ext reply to the player.
		1116
		1117	=cut
		1118
		1119	sub cf::player::ext_reply($$$%) {
		1120	my ($self, $id, %msg) = @_;
		1121
		1122	$msg{msgid} = $id;
		1123
		1124	$self->send ("ext " . to_json \%msg);
		1125	}
		1126
		1127	=back
		1128
		1129
		1130	=head3 cf::map
		1131
		1132	=over 4
		1133
		1134	=cut
		1135
		1136	package cf::map;
		1137
		1138	use Fcntl;
		1139	use Coro::AIO;
		1140
		1141	our $MAX_RESET = 7200;
		1142	our $DEFAULT_RESET = 3600;
		1143
		1144	sub generate_random_map {
		1145	my ($path, $rmp) = @_;
		1146
		1147	# mit "rum" bekleckern, nicht
		1148	cf::map::_create_random_map
		1149	$path,
		1150	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1151	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1152	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1153	$rmp->{exit_on_final_map},
		1154	$rmp->{xsize}, $rmp->{ysize},
		1155	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1156	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1157	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1158	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1159	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1160	(cf::region::find $rmp->{region})
		1161	}
		1162
		1163	# and all this just because we cannot iterate over
		1164	# all maps in C++...
		1165	sub change_all_map_light {
		1166	my ($change) = @_;
		1167
		1168	$_->change_map_light ($change)
		1169	for grep $_->outdoor, values %cf::MAP;
		1170	}
		1171
		1172	sub try_load_header($) {
		1173	my ($path) = @_;
		1174
		1175	utf8::encode $path;
		1176	aio_open $path, O_RDONLY, 0
		1177	or return;
		1178
		1179	my $map = cf::map::new
		1180	or return;
		1181
		1182	$map->load_header ($path)
		1183	or return;
		1184
		1185	$map->{load_path} = $path;
		1186
		1187	$map
		1188	}
		1189
		1190	sub find_map;
		1191	sub find_map {
		1192	my ($path, $origin) = @_;
		1193
		1194	#warn "find_map<$path,$origin>\n";#d#
		1195
		1196	$path = new cf::path $path, $origin && $origin->path;
		1197	my $key = $path->as_string;
		1198
		1199	cf::lock_wait "map_find:$key";
		1200
		1201	$cf::MAP{$key} || do {
		1202	my $guard = cf::lock_acquire "map_find:$key";
		1203
		1204	# do it the slow way
		1205	my $map = try_load_header $path->save_path;
		1206
		1207	if ($map) {
		1208	$map->last_access ((delete $map->{last_access})
		1209	|| $cf::RUNTIME); #d#
		1210	# safety
		1211	$map->{instantiate_time} = $cf::RUNTIME
		1212	if $map->{instantiate_time} > $cf::RUNTIME;
		1213	} else {
		1214	if (my $rmp = $path->random_map_params) {
		1215	$map = generate_random_map $key, $rmp;
		1216	} else {
		1217	$map = try_load_header $path->load_path;
		1218	}
		1219
		1220	$map or return;
		1221
		1222	$map->{load_original} = 1;
		1223	$map->{instantiate_time} = $cf::RUNTIME;
		1224	$map->last_access ($cf::RUNTIME);
		1225	$map->instantiate;
		1226
		1227	# per-player maps become, after loading, normal maps
		1228	$map->per_player (0) if $path->{user_rel};
		1229	}
		1230
		1231	$map->path ($key);
		1232	$map->{path} = $path;
		1233	$map->{last_save} = $cf::RUNTIME;
		1234
		1235	if ($map->should_reset) {
		1236	$map->reset;
		1237	undef $guard;
		1238	$map = find_map $path
		1239	or return;
		1240	}
		1241
		1242	$cf::MAP{$key} = $map
		1243	}
		1244	}
		1245
		1246	sub load {
		1247	my ($self) = @_;
		1248
		1249	my $path = $self->{path};
		1250	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1251
		1252	return if $self->in_memory != cf::MAP_SWAPPED;
		1253
		1254	$self->in_memory (cf::MAP_LOADING);
		1255
		1256	$self->alloc;
		1257	$self->load_objects ($self->{load_path}, 1)
		1258	or return;
		1259
		1260	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1261	if delete $self->{load_original};
		1262
		1263	if (my $uniq = $path->uniq_path) {
		1264	utf8::encode $uniq;
		1265	if (aio_open $uniq, O_RDONLY, 0) {
		1266	$self->clear_unique_items;
		1267	$self->load_objects ($uniq, 0);
		1268	}
		1269	}
		1270
		1271	# now do the right thing for maps
		1272	$self->link_multipart_objects;
		1273
		1274	if ($self->{path}->is_style_map) {
		1275	$self->{deny_save} = 1;
		1276	$self->{deny_reset} = 1;
		1277	} else {
		1278	$self->fix_auto_apply;
		1279	$self->decay_objects;
		1280	$self->update_buttons;
		1281	$self->set_darkness_map;
		1282	$self->difficulty ($self->estimate_difficulty)
		1283	unless $self->difficulty;
		1284	$self->activate;
		1285	}
		1286
		1287	$self->in_memory (cf::MAP_IN_MEMORY);
		1288	}
		1289
		1290	sub load_map_sync {
		1291	my ($path, $origin) = @_;
		1292
		1293	#warn "load_map_sync<$path, $origin>\n";#d#
		1294
		1295	cf::sync_job {
		1296	my $map = cf::map::find_map $path, $origin
		1297	or return;
		1298	$map->load;
		1299	$map
		1300	}
		1301	}
		1302
		1303	sub save {
		1304	my ($self) = @_;
		1305
		1306	$self->{last_save} = $cf::RUNTIME;
		1307
		1308	return unless $self->dirty;
		1309
		1310	my $save = $self->{path}->save_path; utf8::encode $save;
		1311	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1312
		1313	$self->{load_path} = $save;
		1314
		1315	return if $self->{deny_save};
		1316
		1317	local $self->{last_access} = $self->last_access;#d#
		1318
		1319	if ($uniq) {
		1320	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1321	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1322	} else {
		1323	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1324	}
		1325	}
		1326
		1327	sub swap_out {
		1328	my ($self) = @_;
		1329
		1330	# save first because save cedes
		1331	$self->save;
		1332
		1333	return if $self->players;
		1334	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1335	return if $self->{deny_save};
		1336
		1337	$self->clear;
		1338	$self->in_memory (cf::MAP_SWAPPED);
		1339	}
		1340
		1341	sub reset_at {
		1342	my ($self) = @_;
		1343
		1344	# TODO: safety, remove and allow resettable per-player maps
		1345	return 1e99 if $self->{path}{user_rel};
		1346	return 1e99 if $self->{deny_reset};
		1347
		1348	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1349	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1350
		1351	$time + $to
		1352	}
		1353
		1354	sub should_reset {
		1355	my ($self) = @_;
		1356
		1357	$self->reset_at <= $cf::RUNTIME
		1358	}
		1359
		1360	sub unlink_save {
		1361	my ($self) = @_;
		1362
		1363	utf8::encode (my $save = $self->{path}->save_path);
		1364	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1365	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1366	}
		1367
		1368	sub rename {
		1369	my ($self, $new_path) = @_;
		1370
		1371	$self->unlink_save;
		1372
		1373	delete $cf::MAP{$self->path};
		1374	$self->{path} = new cf::path $new_path;
		1375	$self->path ($self->{path}->as_string);
		1376	$cf::MAP{$self->path} = $self;
		1377
		1378	$self->save;
		1379	}
		1380
		1381	sub reset {
		1382	my ($self) = @_;
		1383
		1384	return if $self->players;
		1385	return if $self->{path}{user_rel};#d#
		1386
		1387	warn "resetting map ", $self->path;#d#
		1388
		1389	delete $cf::MAP{$self->path};
		1390
		1391	$_->clear_links_to ($self) for values %cf::MAP;
		1392
		1393	$self->unlink_save;
		1394	$self->destroy;
		1395	}
		1396
		1397	my $nuke_counter = "aaaa";
		1398
		1399	sub nuke {
		1400	my ($self) = @_;
		1401
		1402	$self->{deny_save} = 1;
		1403	$self->reset_timeout (1);
		1404	$self->rename ("{nuke}/" . ($nuke_counter++));
		1405	$self->reset; # polite request, might not happen
		1406	}
		1407
		1408	sub customise_for {
		1409	my ($map, $ob) = @_;
		1410
		1411	if ($map->per_player) {
		1412	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1413	}
		1414
		1415	$map
		1416	}
		1417
		1418	sub emergency_save {
		1419	local $cf::FREEZE = 1;
		1420
		1421	warn "enter emergency map save\n";
		1422
		1423	cf::sync_job {
		1424	warn "begin emergency map save\n";
		1425	$_->save for values %cf::MAP;
		1426	};
		1427
		1428	warn "end emergency map save\n";
		1429	}
		1430
		1431	package cf;
		1432
		1433	=back
		1434
		1435
		1436	=head3 cf::object::player
		1437
		1438	=over 4
		1439
733	=item $player->reply ($npc, $msg[, $flags])	1440	=item $player_object->reply ($npc, $msg[, $flags])
734		1441
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1442	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	1443	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1444	dialogue with the given NPC character.
738		1445
739	=cut	1446	=cut
740		1447
741	# rough implementation of a future "reply" method that works	1448	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1449	# with dialog boxes.
		1450	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1451	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1452	my ($self, $npc, $msg, $flags) = @_;
745		1453
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1454	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1455
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1459	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1460	$self->message ($msg, $flags);
753	}	1461	}
754	}	1462	}
755		1463
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1464	=item $player_object->may ("access")
757		1465
758	Sends an ext reply to the player.	1466	Returns wether the given player is authorized to access resource "access"
		1467	(e.g. "command_wizcast").
759		1468
760	=cut	1469	=cut
761		1470
762	sub cf::player::ext_reply($$$%) {	1471	sub cf::object::player::may {
		1472	my ($self, $access) = @_;
		1473
		1474	$self->flag (cf::FLAG_WIZ) ||
		1475	(ref $cf::CFG{"may_$access"}
		1476	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1477	: $cf::CFG{"may_$access"})
		1478	}
		1479
		1480	=item $player_object->enter_link
		1481
		1482	Freezes the player and moves him/her to a special map (C<{link}>).
		1483
		1484	The player should be reaosnably safe there for short amounts of time. You
		1485	I<MUST> call C<leave_link> as soon as possible, though.
		1486
		1487	=item $player_object->leave_link ($map, $x, $y)
		1488
		1489	Moves the player out of the specila link map onto the given map. If the
		1490	map is not valid (or omitted), the player will be moved back to the
		1491	location he/she was before the call to C<enter_link>, or, if that fails,
		1492	to the emergency map position.
		1493
		1494	Might block.
		1495
		1496	=cut
		1497
		1498	sub cf::object::player::enter_link {
		1499	my ($self) = @_;
		1500
		1501	$self->deactivate_recursive;
		1502
		1503	return if $self->map == $LINK_MAP;
		1504
		1505	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1506	if $self->map;
		1507
		1508	$self->enter_map ($LINK_MAP, 20, 20);
		1509	}
		1510
		1511	sub cf::object::player::leave_link {
		1512	my ($self, $map, $x, $y) = @_;
		1513
		1514	my $link_pos = delete $self->{_link_pos};
		1515
		1516	unless ($map) {
		1517	# restore original map position
		1518	($map, $x, $y) = @{ $link_pos || [] };
		1519	$map = cf::map::find_map $map;
		1520
		1521	unless ($map) {
		1522	($map, $x, $y) = @$EMERGENCY_POSITION;
		1523	$map = cf::map::find_map $map
		1524	or die "FATAL: cannot load emergency map\n";
		1525	}
		1526	}
		1527
		1528	($x, $y) = (-1, -1)
		1529	unless (defined $x) && (defined $y);
		1530
		1531	# use -1 or undef as default coordinates, not 0, 0
		1532	($x, $y) = ($map->enter_x, $map->enter_y)
		1533	if $x <=0 && $y <= 0;
		1534
		1535	$map->load;
		1536
		1537	$self->activate_recursive;
		1538	$self->enter_map ($map, $x, $y);
		1539	}
		1540
		1541	cf::player->attach (
		1542	on_logout => sub {
		1543	my ($pl) = @_;
		1544
		1545	# abort map switching before logout
		1546	if ($pl->ob->{_link_pos}) {
		1547	cf::sync_job {
		1548	$pl->ob->leave_link
		1549	};
		1550	}
		1551	},
		1552	on_login => sub {
		1553	my ($pl) = @_;
		1554
		1555	# try to abort aborted map switching on player login :)
		1556	# should happen only on crashes
		1557	if ($pl->ob->{_link_pos}) {
		1558	$pl->ob->enter_link;
		1559	cf::async {
		1560	# we need this sleep as the login has a concurrent enter_exit running
		1561	# and this sleep increases chances of the player not ending up in scorn
		1562	Coro::Timer::sleep 1;
		1563	$pl->ob->leave_link;
		1564	};
		1565	}
		1566	},
		1567	);
		1568
		1569	=item $player_object->goto_map ($path, $x, $y)
		1570
		1571	=cut
		1572
		1573	sub cf::object::player::goto_map {
		1574	my ($self, $path, $x, $y) = @_;
		1575
		1576	$self->enter_link;
		1577
		1578	(cf::async {
		1579	$path = new cf::path $path;
		1580
		1581	my $map = cf::map::find_map $path->as_string;
		1582	$map = $map->customise_for ($self) if $map;
		1583
		1584	# warn "entering ", $map->path, " at ($x, $y)\n"
		1585	# if $map;
		1586
		1587	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1588
		1589	$self->leave_link ($map, $x, $y);
		1590	})->prio (1);
		1591	}
		1592
		1593	=item $player_object->enter_exit ($exit_object)
		1594
		1595	=cut
		1596
		1597	sub parse_random_map_params {
		1598	my ($spec) = @_;
		1599
		1600	my $rmp = { # defaults
		1601	xsize => 10,
		1602	ysize => 10,
		1603	};
		1604
		1605	for (split /\n/, $spec) {
		1606	my ($k, $v) = split /\s+/, $_, 2;
		1607
		1608	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1609	}
		1610
		1611	$rmp
		1612	}
		1613
		1614	sub prepare_random_map {
		1615	my ($exit) = @_;
		1616
		1617	# all this does is basically replace the /! path by
		1618	# a new random map path (?random/...) with a seed
		1619	# that depends on the exit object
		1620
		1621	my $rmp = parse_random_map_params $exit->msg;
		1622
		1623	if ($exit->map) {
		1624	$rmp->{region} = $exit->map->region_name;
		1625	$rmp->{origin_map} = $exit->map->path;
		1626	$rmp->{origin_x} = $exit->x;
		1627	$rmp->{origin_y} = $exit->y;
		1628	}
		1629
		1630	$rmp->{random_seed} ||= $exit->random_seed;
		1631
		1632	my $data = cf::to_json $rmp;
		1633	my $md5 = Digest::MD5::md5_hex $data;
		1634
		1635	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1636	aio_write $fh, 0, (length $data), $data, 0;
		1637
		1638	$exit->slaying ("?random/$md5");
		1639	$exit->msg (undef);
		1640	}
		1641	}
		1642
		1643	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1644	my ($self, $exit) = @_;
764		1645
765	$msg{msgid} = $id;	1646	return unless $self->type == cf::PLAYER;
766		1647
767	$self->send ("ext " . to_json \%msg);	1648	$self->enter_link;
768	}
769		1649
770	#############################################################################	1650	(cf::async {
771	# map scripting support	1651	unless (eval {
		1652	prepare_random_map $exit
		1653	if $exit->slaying eq "/!";
		1654
		1655	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1656	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1657
		1658	1;
		1659	}) {
		1660	$self->message ("Something went wrong deep within the crossfire server. "
		1661	. "I'll try to bring you back to the map you were before. "
		1662	. "Please report this to the dungeon master",
		1663	cf::NDI_UNIQUE | cf::NDI_RED);
		1664
		1665	warn "ERROR in enter_exit: $@";
		1666	$self->leave_link;
		1667	}
		1668	})->prio (1);
		1669	}
		1670
		1671	=head3 cf::client
		1672
		1673	=over 4
		1674
		1675	=item $client->send_drawinfo ($text, $flags)
		1676
		1677	Sends a drawinfo packet to the client. Circumvents output buffering so
		1678	should not be used under normal circumstances.
		1679
		1680	=cut
		1681
		1682	sub cf::client::send_drawinfo {
		1683	my ($self, $text, $flags) = @_;
		1684
		1685	utf8::encode $text;
		1686	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1687	}
		1688
		1689
		1690	=item $success = $client->query ($flags, "text", \&cb)
		1691
		1692	Queues a query to the client, calling the given callback with
		1693	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1694	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1695
		1696	Queries can fail, so check the return code. Or don't, as queries will become
		1697	reliable at some point in the future.
		1698
		1699	=cut
		1700
		1701	sub cf::client::query {
		1702	my ($self, $flags, $text, $cb) = @_;
		1703
		1704	return unless $self->state == ST_PLAYING
		1705	|| $self->state == ST_SETUP
		1706	|| $self->state == ST_CUSTOM;
		1707
		1708	$self->state (ST_CUSTOM);
		1709
		1710	utf8::encode $text;
		1711	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1712
		1713	$self->send_packet ($self->{query_queue}[0][0])
		1714	if @{ $self->{query_queue} } == 1;
		1715	}
		1716
		1717	cf::client->attach (
		1718	on_reply => sub {
		1719	my ($ns, $msg) = @_;
		1720
		1721	# this weird shuffling is so that direct followup queries
		1722	# get handled first
		1723	my $queue = delete $ns->{query_queue}
		1724	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1725
		1726	(shift @$queue)->[1]->($msg);
		1727
		1728	push @{ $ns->{query_queue} }, @$queue;
		1729
		1730	if (@{ $ns->{query_queue} } == @$queue) {
		1731	if (@$queue) {
		1732	$ns->send_packet ($ns->{query_queue}[0][0]);
		1733	} else {
		1734	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1735	}
		1736	}
		1737	},
		1738	);
		1739
		1740	=item $client->coro (\&cb)
		1741
		1742	Create a new coroutine, running the specified callback. The coroutine will
		1743	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1744	or loss of connection).
		1745
		1746	=cut
		1747
		1748	sub cf::client::coro {
		1749	my ($self, $cb) = @_;
		1750
		1751	my $coro = &cf::async ($cb);
		1752
		1753	$coro->on_destroy (sub {
		1754	delete $self->{_coro}{$coro+0};
		1755	});
		1756
		1757	$self->{_coro}{$coro+0} = $coro;
		1758
		1759	$coro
		1760	}
		1761
		1762	cf::client->attach (
		1763	on_destroy => sub {
		1764	my ($ns) = @_;
		1765
		1766	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1767	},
		1768	);
		1769
		1770	=back
		1771
		1772
		1773	=head2 SAFE SCRIPTING
		1774
		1775	Functions that provide a safe environment to compile and execute
		1776	snippets of perl code without them endangering the safety of the server
		1777	itself. Looping constructs, I/O operators and other built-in functionality
		1778	is not available in the safe scripting environment, and the number of
		1779	functions and methods that can be called is greatly reduced.
		1780
		1781	=cut
772		1782
773	our $safe = new Safe "safe";	1783	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	1784	our $safe_hole = new Safe::Hole;
775		1785
776	$SIG{FPE} = 'IGNORE';	1786	$SIG{FPE} = 'IGNORE';
777		1787
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1788	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		1789
780	# here we export the classes and methods available to script code	1790	# here we export the classes and methods available to script code
781		1791
		1792	=pod
		1793
		1794	The following fucntions and emthods are available within a safe environment:
		1795
		1796	cf::object contr pay_amount pay_player map
		1797	cf::object::player player
		1798	cf::player peaceful
		1799	cf::map trigger
		1800
		1801	=cut
		1802
782	for (	1803	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	1804	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	1805	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	1806	["cf::player" => qw(peaceful)],
		1807	["cf::map" => qw(trigger)],
786	) {	1808	) {
787	no strict 'refs';	1809	no strict 'refs';
788	my ($pkg, @funs) = @$_;	1810	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1811	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	1812	for @funs;
791	}	1813	}
		1814
		1815	=over 4
		1816
		1817	=item @retval = safe_eval $code, [var => value, ...]
		1818
		1819	Compiled and executes the given perl code snippet. additional var/value
		1820	pairs result in temporary local (my) scalar variables of the given name
		1821	that are available in the code snippet. Example:
		1822
		1823	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1824
		1825	=cut
792		1826
793	sub safe_eval($;@) {	1827	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	1828	my ($code, %vars) = @_;
795		1829
796	my $qcode = $code;	1830	my $qcode = $code;
…		…
819	}	1853	}
820		1854
821	wantarray ? @res : $res[0]	1855	wantarray ? @res : $res[0]
822	}	1856	}
823		1857
		1858	=item cf::register_script_function $function => $cb
		1859
		1860	Register a function that can be called from within map/npc scripts. The
		1861	function should be reasonably secure and should be put into a package name
		1862	like the extension.
		1863
		1864	Example: register a function that gets called whenever a map script calls
		1865	C<rent::overview>, as used by the C<rent> extension.
		1866
		1867	cf::register_script_function "rent::overview" => sub {
		1868	...
		1869	};
		1870
		1871	=cut
		1872
824	sub register_script_function {	1873	sub register_script_function {
825	my ($fun, $cb) = @_;	1874	my ($fun, $cb) = @_;
826		1875
827	no strict 'refs';	1876	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1877	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	1878	}
830		1879
		1880	=back
		1881
		1882	=cut
		1883
		1884	#############################################################################
		1885
		1886	=head2 EXTENSION DATABASE SUPPORT
		1887
		1888	Crossfire maintains a very simple database for extension use. It can
		1889	currently store anything that can be serialised using Storable, which
		1890	excludes objects.
		1891
		1892	The parameter C<$family> should best start with the name of the extension
		1893	using it, it should be unique.
		1894
		1895	=over 4
		1896
		1897	=item $hashref = cf::db_get $family
		1898
		1899	Return a hashref for use by the extension C<$family>, which can be
		1900	modified. After modifications, you have to call C<cf::db_dirty> or
		1901	C<cf::db_sync>.
		1902
		1903	=item $value = cf::db_get $family => $key
		1904
		1905	Returns a single value from the database
		1906
		1907	=item cf::db_put $family => $hashref
		1908
		1909	Stores the given family hashref into the database. Updates are delayed, if
		1910	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1911
		1912	=item cf::db_put $family => $key => $value
		1913
		1914	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1915	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1916
		1917	=item cf::db_dirty
		1918
		1919	Marks the database as dirty, to be updated at a later time.
		1920
		1921	=item cf::db_sync
		1922
		1923	Immediately write the database to disk I<if it is dirty>.
		1924
		1925	=cut
		1926
		1927	our $DB;
		1928
		1929	{
		1930	my $path = cf::localdir . "/database.pst";
		1931
		1932	sub db_load() {
		1933	$DB = stat $path ? Storable::retrieve $path : { };
		1934	}
		1935
		1936	my $pid;
		1937
		1938	sub db_save() {
		1939	waitpid $pid, 0 if $pid;
		1940	if (0 == ($pid = fork)) {
		1941	$DB->{_meta}{version} = 1;
		1942	Storable::nstore $DB, "$path~";
		1943	rename "$path~", $path;
		1944	cf::_exit 0 if defined $pid;
		1945	}
		1946	}
		1947
		1948	my $dirty;
		1949
		1950	sub db_sync() {
		1951	db_save if $dirty;
		1952	undef $dirty;
		1953	}
		1954
		1955	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1956	db_sync;
		1957	});
		1958
		1959	sub db_dirty() {
		1960	$dirty = 1;
		1961	$idle->start;
		1962	}
		1963
		1964	sub db_get($;$) {
		1965	@_ >= 2
		1966	? $DB->{$_[0]}{$_[1]}
		1967	: ($DB->{$_[0]} ||= { })
		1968	}
		1969
		1970	sub db_put($$;$) {
		1971	if (@_ >= 3) {
		1972	$DB->{$_[0]}{$_[1]} = $_[2];
		1973	} else {
		1974	$DB->{$_[0]} = $_[1];
		1975	}
		1976	db_dirty;
		1977	}
		1978
		1979	cf::global->attach (
		1980	prio => 10000,
		1981	on_cleanup => sub {
		1982	db_sync;
		1983	},
		1984	);
		1985	}
		1986
831	#############################################################################	1987	#############################################################################
832	# the server's main()	1988	# the server's main()
833		1989
		1990	sub cfg_load {
		1991	open my $fh, "<:utf8", cf::confdir . "/config"
		1992	or return;
		1993
		1994	local $/;
		1995	*CFG = YAML::Syck::Load <$fh>;
		1996
		1997	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		1998
		1999	if (exists $CFG{mlockall}) {
		2000	eval {
		2001	$CFG{mlockall} ? &mlockall : &munlockall
		2002	and die "WARNING: m(un)lockall failed: $!\n";
		2003	};
		2004	warn $@ if $@;
		2005	}
		2006	}
		2007
834	sub main {	2008	sub main {
		2009	# we must not ever block the main coroutine
		2010	local $Coro::idle = sub {
		2011	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2012	(Coro::unblock_sub {
		2013	Event::one_event;
		2014	})->();
		2015	};
		2016
		2017	cfg_load;
		2018	db_load;
		2019	load_extensions;
835	Event::loop;	2020	Event::loop;
836	}	2021	}
837		2022
838	#############################################################################	2023	#############################################################################
839	# initialisation	2024	# initialisation
840		2025
		2026	sub reload() {
		2027	# can/must only be called in main
		2028	if ($Coro::current != $Coro::main) {
		2029	warn "can only reload from main coroutine\n";
		2030	return;
		2031	}
		2032
		2033	warn "reloading...";
		2034
		2035	local $FREEZE = 1;
		2036	cf::emergency_save;
		2037
		2038	eval {
		2039	# if anything goes wrong in here, we should simply crash as we already saved
		2040
		2041	# cancel all watchers
		2042	for (Event::all_watchers) {
		2043	$_->cancel if $_->data & WF_AUTOCANCEL;
		2044	}
		2045
		2046	# cancel all extension coros
		2047	$_->cancel for values %EXT_CORO;
		2048	%EXT_CORO = ();
		2049
		2050	# unload all extensions
		2051	for (@exts) {
		2052	warn "unloading <$_>";
		2053	unload_extension $_;
		2054	}
		2055
		2056	# unload all modules loaded from $LIBDIR
		2057	while (my ($k, $v) = each %INC) {
		2058	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2059
		2060	warn "removing <$k>";
		2061	delete $INC{$k};
		2062
		2063	$k =~ s/\.pm$//;
		2064	$k =~ s/\//::/g;
		2065
		2066	if (my $cb = $k->can ("unload_module")) {
		2067	$cb->();
		2068	}
		2069
		2070	Symbol::delete_package $k;
		2071	}
		2072
		2073	# sync database to disk
		2074	cf::db_sync;
		2075	IO::AIO::flush;
		2076
		2077	# get rid of safe::, as good as possible
		2078	Symbol::delete_package "safe::$_"
		2079	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2080
		2081	# remove register_script_function callbacks
		2082	# TODO
		2083
		2084	# unload cf.pm "a bit"
		2085	delete $INC{"cf.pm"};
		2086
		2087	# don't, removes xs symbols, too,
		2088	# and global variables created in xs
		2089	#Symbol::delete_package __PACKAGE__;
		2090
		2091	# reload cf.pm
		2092	warn "reloading cf.pm";
		2093	require cf;
		2094	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2095
		2096	# load config and database again
		2097	cf::cfg_load;
		2098	cf::db_load;
		2099
		2100	# load extensions
		2101	warn "load extensions";
		2102	cf::load_extensions;
		2103
		2104	# reattach attachments to objects
		2105	warn "reattach";
		2106	_global_reattach;
		2107	};
		2108
		2109	if ($@) {
		2110	warn $@;
		2111	warn "error while reloading, exiting.";
		2112	exit 1;
		2113	}
		2114
		2115	warn "reloaded successfully";
		2116	};
		2117
		2118	#############################################################################
		2119
		2120	unless ($LINK_MAP) {
		2121	$LINK_MAP = cf::map::new;
		2122
		2123	$LINK_MAP->width (41);
		2124	$LINK_MAP->height (41);
		2125	$LINK_MAP->alloc;
		2126	$LINK_MAP->path ("{link}");
		2127	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2128	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2129
		2130	# dirty hack because... archetypes are not yet loaded
		2131	Event->timer (
		2132	after => 2,
		2133	cb => sub {
		2134	$_[0]->w->cancel;
		2135
		2136	# provide some exits "home"
		2137	my $exit = cf::object::new "exit";
		2138
		2139	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2140	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2141	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2142
		2143	$LINK_MAP->insert ($exit->clone, 19, 19);
		2144	$LINK_MAP->insert ($exit->clone, 19, 20);
		2145	$LINK_MAP->insert ($exit->clone, 19, 21);
		2146	$LINK_MAP->insert ($exit->clone, 20, 19);
		2147	$LINK_MAP->insert ($exit->clone, 20, 21);
		2148	$LINK_MAP->insert ($exit->clone, 21, 19);
		2149	$LINK_MAP->insert ($exit->clone, 21, 20);
		2150	$LINK_MAP->insert ($exit->clone, 21, 21);
		2151
		2152	$exit->destroy;
		2153	});
		2154
		2155	$LINK_MAP->{deny_save} = 1;
		2156	$LINK_MAP->{deny_reset} = 1;
		2157
		2158	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2159	}
		2160
841	register "<global>", __PACKAGE__;	2161	register "<global>", __PACKAGE__;
842		2162
		2163	register_command "reload" => sub {
		2164	my ($who, $arg) = @_;
		2165
		2166	if ($who->flag (FLAG_WIZ)) {
		2167	$who->message ("start of reload.");
		2168	reload;
		2169	$who->message ("end of reload.");
		2170	}
		2171	};
		2172
843	unshift @INC, $LIBDIR;	2173	unshift @INC, $LIBDIR;
844		2174
845	load_extensions;
846
847	$TICK_WATCHER = Event->timer (	2175	$TICK_WATCHER = Event->timer (
		2176	reentrant => 0,
848	prio => 1,	2177	prio => 0,
849	at => $NEXT_TICK || 1,	2178	at => $NEXT_TICK || $TICK,
		2179	data => WF_AUTOCANCEL,
850	cb => sub {	2180	cb => sub {
		2181	unless ($FREEZE) {
851	cf::server_tick; # one server iteration	2182	cf::server_tick; # one server iteration
		2183	$RUNTIME += $TICK;
		2184	}
852		2185
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2186	$NEXT_TICK += $TICK;
855		2187
856	# if we are delayed by four ticks, skip them all	2188	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2189	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2190
859	$TICK_WATCHER->at ($NEXT_TICK);	2191	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2192	$TICK_WATCHER->start;
861	},	2193	},
862	);	2194	);
863		2195
		2196	IO::AIO::max_poll_time $TICK * 0.2;
		2197
		2198	Event->io (
		2199	fd => IO::AIO::poll_fileno,
		2200	poll => 'r',
		2201	prio => 5,
		2202	data => WF_AUTOCANCEL,
		2203	cb => \&IO::AIO::poll_cb,
		2204	);
		2205
		2206	Event->timer (
		2207	data => WF_AUTOCANCEL,
		2208	after => 0,
		2209	interval => 10,
		2210	cb => sub {
		2211	(Coro::unblock_sub {
		2212	write_runtime
		2213	or warn "ERROR: unable to write runtime file: $!";
		2214	})->();
		2215	},
		2216	);
		2217
		2218	END { cf::emergency_save }
		2219
864	1	2220	1
865		2221

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