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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.48 by root, Sun Aug 27 15:24:22 2006 UTC vs.
Revision 1.140 by root, Fri Jan 5 20:04:02 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 (Coro::PRIO_MAX); # 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 $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
		76
		77	#############################################################################
		78
		79	=head2 GLOBAL VARIABLES
		80
		81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
		91
		92	=item $cf::LIBDIR
		93
		94	The perl library directory, where extensions and cf-specific modules can
		95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
		100
		101	=item $cf::TICK
		102
		103	The interval between server ticks, in seconds.
		104
		105	=item %cf::CFG
		106
		107	Configuration for the server, loaded from C</etc/crossfire/config>, or
		108	from wherever your confdir points to.
		109
		110	=back
		111
		112	=cut
27		113
28	BEGIN {	114	BEGIN {
29	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
31	$msg .= "\n"	119	$msg .= "\n"
32	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
33		121
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
36	};	123	};
37	}	124	}
38		125
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	130	@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';	131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		132
75	# we bless all objects into (empty) derived classes to force a method lookup	133	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	134	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	135	for my $pkg (qw(
		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
78	no strict 'refs';	142	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	144	}
81		145
82	$Event::DIED = sub {	146	$Event::DIED = sub {
…		…
84	};	148	};
85		149
86	my %ext_pkg;	150	my %ext_pkg;
87	my @exts;	151	my @exts;
88	my @hook;	152	my @hook;
89	my %command;
90	my %extcmd;
91		153
92	#############################################################################	154	=head2 UTILITY FUNCTIONS
93	# utility functions	155
		156	=over 4
		157
		158	=cut
94		159
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	160	use JSON::Syck (); # TODO# replace by JSON::PC once working
		161
		162	=item $ref = cf::from_json $json
		163
		164	Converts a JSON string into the corresponding perl data structure.
		165
		166	=cut
96		167
97	sub from_json($) {	168	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	170	JSON::Syck::Load $_[0]
100	}	171	}
101		172
		173	=item $json = cf::to_json $ref
		174
		175	Converts a perl data structure into its JSON representation.
		176
		177	=cut
		178
102	sub to_json($) {	179	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	181	JSON::Syck::Dump $_[0]
105	}	182	}
106		183
		184	=item cf::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
		203	my ($key) = @_;
		204
		205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	sub freeze_mainloop {
		227	return unless $TICK_WATCHER->is_active;
		228
		229	my $guard = Coro::guard { $TICK_WATCHER->start };
		230	$TICK_WATCHER->stop;
		231	$guard
		232	}
		233
		234	=item cf::async { BLOCK }
		235
		236	Currently the same as Coro::async_pool, meaning you cannot use
		237	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		238	thing you are allowed to do is call C<prio> on it.
		239
		240	=cut
		241
		242	BEGIN { *async = \&Coro::async_pool }
		243
		244	=item cf::sync_job { BLOCK }
		245
		246	The design of crossfire+ requires that the main coro ($Coro::main) is
		247	always able to handle events or runnable, as crossfire+ is only partly
		248	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		249
		250	If it must be done, put the blocking parts into C<sync_job>. This will run
		251	the given BLOCK in another coroutine while waiting for the result. The
		252	server will be frozen during this time, so the block should either finish
		253	fast or be very important.
		254
		255	=cut
		256
		257	sub sync_job(&) {
		258	my ($job) = @_;
		259
		260	if ($Coro::current == $Coro::main) {
		261	# this is the main coro, too bad, we have to block
		262	# till the operation succeeds, freezing the server :/
		263
		264	# TODO: use suspend/resume instead
		265	# (but this is cancel-safe)
		266	my $freeze_guard = freeze_mainloop;
		267
		268	my $busy = 1;
		269	my @res;
		270
		271	(async {
		272	@res = eval { $job->() };
		273	warn $@ if $@;
		274	undef $busy;
		275	})->prio (Coro::PRIO_MAX);
		276
		277	while ($busy) {
		278	unless (Coro::cede) {
		279	Coro::nready ? Event::one_event 0 : Event::one_event;
		280	Coro::cede_notself unless Coro::cede;
		281	}
		282	}
		283
		284	wantarray ? @res : $res[0]
		285	} else {
		286	# we are in another coroutine, how wonderful, everything just works
		287
		288	$job->()
		289	}
		290	}
		291
		292	=item $coro = cf::async_ext { BLOCK }
		293
		294	Like async, but this coro is automcatially being canceled when the
		295	extension calling this is being unloaded.
		296
		297	=cut
		298
		299	sub async_ext(&) {
		300	my $cb = shift;
		301
		302	my $coro = &Coro::async ($cb);
		303
		304	$coro->on_destroy (sub {
		305	delete $EXT_CORO{$coro+0};
		306	});
		307	$EXT_CORO{$coro+0} = $coro;
		308
		309	$coro
		310	}
		311
		312	sub write_runtime {
		313	my $runtime = cf::localdir . "/runtime";
		314
		315	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		316	or return;
		317
		318	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		319	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		320	and return;
		321
		322	aio_fsync $fh
		323	and return;
		324
		325	close $fh
		326	or return;
		327
		328	aio_rename "$runtime~", $runtime
		329	and return;
		330
		331	1
		332	}
		333
		334	=back
		335
		336	=cut
		337
107	#############################################################################	338	#############################################################################
108	# "new" plug-in system
109		339
		340	package cf::path;
		341
		342	sub new {
		343	my ($class, $path, $base) = @_;
		344
		345	$path = $path->as_string if ref $path;
		346
		347	my $self = bless { }, $class;
		348
		349	# {... are special paths that are not touched
		350	# ?xxx/... are special absolute paths
		351	# ?random/... random maps
		352	# /! non-realised random map exit
		353	# /... normal maps
		354	# ~/... per-player maps without a specific player (DO NOT USE)
		355	# ~user/... per-player map of a specific user
		356
		357	if ($path =~ /^{/) {
		358	# fine as it is
		359	} elsif ($path =~ s{^\?random/}{}) {
		360	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		361	$self->{random} = cf::from_json $data;
		362	} else {
		363	if ($path =~ s{^~([^/]+)?}{}) {
		364	$self->{user_rel} = 1;
		365
		366	if (defined $1) {
		367	$self->{user} = $1;
		368	} elsif ($base =~ m{^~([^/]+)/}) {
		369	$self->{user} = $1;
		370	} else {
		371	warn "cannot resolve user-relative path without user <$path,$base>\n";
		372	}
		373	} elsif ($path =~ /^\//) {
		374	# already absolute
		375	} else {
		376	$base =~ s{[^/]+/?$}{};
		377	return $class->new ("$base/$path");
		378	}
		379
		380	for ($path) {
		381	redo if s{/\.?/}{/};
		382	redo if s{/[^/]+/\.\./}{/};
		383	}
		384	}
		385
		386	$self->{path} = $path;
		387
		388	$self
		389	}
		390
		391	# the name / primary key / in-game path
		392	sub as_string {
		393	my ($self) = @_;
		394
		395	$self->{user_rel} ? "~$self->{user}$self->{path}"
		396	: $self->{random} ? "?random/$self->{path}"
		397	: $self->{path}
		398	}
		399
		400	# the displayed name, this is a one way mapping
		401	sub visible_name {
		402	my ($self) = @_;
		403
		404	# if (my $rmp = $self->{random}) {
		405	# # todo: be more intelligent about this
		406	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		407	# } else {
		408	$self->as_string
		409	# }
		410	}
		411
		412	# escape the /'s in the path
		413	sub _escaped_path {
		414	# ∕ is U+2215
		415	(my $path = $_[0]{path}) =~ s/\//∕/g;
		416	$path
		417	}
		418
		419	# the original (read-only) location
		420	sub load_path {
		421	my ($self) = @_;
		422
		423	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		424	}
		425
		426	# the temporary/swap location
		427	sub save_path {
		428	my ($self) = @_;
		429
		430	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		431	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		432	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		433	}
		434
		435	# the unique path, might be eq to save_path
		436	sub uniq_path {
		437	my ($self) = @_;
		438
		439	$self->{user_rel} || $self->{random}
		440	? undef
		441	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		442	}
		443
		444	# return random map parameters, or undef
		445	sub random_map_params {
		446	my ($self) = @_;
		447
		448	$self->{random}
		449	}
		450
		451	# this is somewhat ugly, but style maps do need special treatment
		452	sub is_style_map {
		453	$_[0]{path} =~ m{^/styles/}
		454	}
		455
		456	package cf;
		457
		458	#############################################################################
		459
		460	=head2 ATTACHABLE OBJECTS
		461
		462	Many objects in crossfire are so-called attachable objects. That means you can
		463	attach callbacks/event handlers (a collection of which is called an "attachment")
		464	to it. All such attachable objects support the following methods.
		465
		466	In the following description, CLASS can be any of C<global>, C<object>
		467	C<player>, C<client> or C<map> (i.e. the attachable objects in
		468	crossfire+).
		469
		470	=over 4
		471
110	=item $object->attach ($attachment, key => $value...)	472	=item $attachable->attach ($attachment, key => $value...)
111		473
112	Attach a pre-registered attachment to an object.	474	=item $attachable->detach ($attachment)
113		475
114	=item $player->attach ($attachment, key => $value...)	476	Attach/detach a pre-registered attachment to a specific object and give it
		477	the specified key/value pairs as arguments.
115		478
116	Attach a pre-registered attachment to a player.	479	Example, attach a minesweeper attachment to the given object, making it a
		480	10x10 minesweeper game:
117		481
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	482	$obj->attach (minesweeper => width => 10, height => 10);
119		483
120	Attach a pre-registered attachment to a map.	484	=item $bool = $attachable->attached ($name)
121		485
122	=item cf::attach_global ...	486	Checks wether the named attachment is currently attached to the object.
123		487
124	Attach handlers for global events.	488	=item cf::CLASS->attach ...
125		489
126	This and all following C<attach_*>-functions expect any number of the	490	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	491
		492	Define an anonymous attachment and attach it to all objects of the given
		493	CLASS. See the next function for an explanation of its arguments.
		494
		495	You can attach to global events by using the C<cf::global> class.
		496
		497	Example, log all player logins:
		498
		499	cf::player->attach (
		500	on_login => sub {
		501	my ($pl) = @_;
		502	...
		503	},
		504	);
		505
		506	Example, attach to the jeweler skill:
		507
		508	cf::object->attach (
		509	type => cf::SKILL,
		510	subtype => cf::SK_JEWELER,
		511	on_use_skill => sub {
		512	my ($sk, $ob, $part, $dir, $msg) = @_;
		513	...
		514	},
		515	);
		516
		517	=item cf::CLASS::attachment $name, ...
		518
		519	Register an attachment by C<$name> through which attachable objects of the
		520	given CLASS can refer to this attachment.
		521
		522	Some classes such as crossfire maps and objects can specify attachments
		523	that are attached at load/instantiate time, thus the need for a name.
		524
		525	These calls expect any number of the following handler/hook descriptions:
128		526
129	=over 4	527	=over 4
130		528
131	=item prio => $number	529	=item prio => $number
132		530
…		…
134	by another C<prio> setting). Lower priority handlers get executed	532	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	533	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	534	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	535	unless you know what you are doing.
138		536
		537	=item type => $type
		538
		539	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		540	given type of objects only (the additional parameter C<subtype> can be
		541	used to further limit to the given subtype).
		542
139	=item on_I<event> => \&cb	543	=item on_I<event> => \&cb
140		544
141	Call the given code reference whenever the named event happens (event is	545	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	546	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	547	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	556	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	557	object/class are recognised.
154		558
155	=back	559	=back
156		560
157	=item cf::attach_to_type $object_type, $subtype, ...	561	Example, define an attachment called "sockpuppet" that calls the given
		562	event handler when a monster attacks:
158		563
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	564	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	565	on_skill_attack => sub {
161	type.	566	my ($self, $victim) = @_;
		567	...
		568	}
		569	}
162		570
163	=item cf::attach_to_objects ...	571	=item $attachable->valid
164		572
165	Attach handlers to all objects. Do not use this except for debugging or	573	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	574	C-level object still exists. If you try to access an object that has no
167	the game.	575	valid C counterpart anymore you get an exception at runtime. This method
168		576	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	577	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 $name, ...
178		578
179	=cut	579	=cut
180		580
181	# the following variables are defined in .xs and must not be re-created	581	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	582	our @CB_GLOBAL = (); # registry for all global events
		583	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	584	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	585	our @CB_PLAYER = ();
		586	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	587	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	588	our @CB_MAP = ();
187		589
188	my %attachment;	590	my %attachment;
189		591
190	sub _attach_cb($\%$$$) {	592	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	593	my ($registry, $event, $prio, $cb) = @_;
192		594
193	use sort 'stable';	595	use sort 'stable';
194		596
195	$cb = [$prio, $cb];	597	$cb = [$prio, $cb];
196		598
197	@{$registry->[$event]} = sort	599	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	600	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	601	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	602	}
		603
		604	# hack
		605	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		606
204	# attach handles attaching event callbacks	607	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	608	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	609	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	610	sub _attach {
208	my ($registry, $klass, @arg) = @_;	611	my ($registry, $klass, @arg) = @_;
209		612
		613	my $object_type;
210	my $prio = 0;	614	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;	615	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		616
		617	#TODO: get rid of this hack
		618	if ($attachable_klass{$klass}) {
		619	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		620	}
218		621
219	while (@arg) {	622	while (@arg) {
220	my $type = shift @arg;	623	my $type = shift @arg;
221		624
222	if ($type eq "prio") {	625	if ($type eq "prio") {
223	$prio = shift @arg;	626	$prio = shift @arg;
224		627
		628	} elsif ($type eq "type") {
		629	$object_type = shift @arg;
		630	$registry = $CB_TYPE[$object_type] ||= [];
		631
		632	} elsif ($type eq "subtype") {
		633	defined $object_type or Carp::croak "subtype specified without type";
		634	my $object_subtype = shift @arg;
		635	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		636
225	} elsif ($type eq "package") {	637	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	638	my $pkg = shift @arg;
227		639
228	while (my ($name, $id) = each %cb_id) {	640	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	641	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	642	_attach_cb $registry, $id, $prio, $cb;
231	}	643	}
232	}	644	}
233		645
234	} elsif (exists $cb_id{$type}) {	646	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	647	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		648
237	} elsif (ref $type) {	649	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	650	warn "attaching objects not supported, ignoring.\n";
239		651
240	} else {	652	} else {
241	shift @arg;	653	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	654	warn "attach argument '$type' not supported, ignoring.\n";
243	}	655	}
244	}	656	}
245
246	\%undo
247	}	657	}
248		658
249	sub _attach_attachment {	659	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	660	my ($obj, $name, %arg) = @_;
251		661
252	my $res;	662	return if exists $obj->{_attachment}{$name};
253		663
254	if (my $attach = $attachment{$name}) {	664	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	665	my $registry = $obj->registry;
256		666
257	for (@$attach) {	667	for (@$attach) {
258	my ($klass, @attach) = @$_;	668	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	669	_attach $registry, $klass, @attach;
260	}	670	}
261		671
262	$obj->{$name} = \%arg;	672	$obj->{$name} = \%arg;
263	} else {	673	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	674	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	675	}
266		676
267	push @{$obj->{_attachment}}, $name;	677	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	678	}
272		679
273	sub cf::object::attach {	680	sub cf::attachable::attach {
		681	if (ref $_[0]) {
		682	_object_attach @_;
		683	} else {
		684	_attach shift->_attach_registry, @_;
		685	}
		686	};
		687
		688	# all those should be optimised
		689	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	690	my ($obj, $name) = @_;
275		691
276	_attach_attachment $obj, $name, %arg;	692	if (ref $obj) {
277	}	693	delete $obj->{_attachment}{$name};
		694	reattach ($obj);
		695	} else {
		696	Carp::croak "cannot, currently, detach class attachments";
		697	}
		698	};
278		699
279	sub cf::player::attach {	700	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	701	my ($obj, $name) = @_;
281		702
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	703	exists $obj->{_attachment}{$name}
283	}	704	}
284		705
285	sub cf::map::attach {	706	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	707	eval "#line " . __LINE__ . " 'cf.pm'
		708	sub cf::\L$klass\E::_attach_registry {
		709	(\\\@CB_$klass, KLASS_$klass)
		710	}
287		711
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	712	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, 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;	713	my \$name = shift;
316		714
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	715	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		716	}
		717	";
		718	die if $@;
318	}	719	}
319		720
320	our $override;	721	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	722	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		723
…		…
336	for (@$callbacks) {	737	for (@$callbacks) {
337	eval { &{$_->[1]} };	738	eval { &{$_->[1]} };
338		739
339	if ($@) {	740	if ($@) {
340	warn "$@";	741	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	742	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	743	override;
343	}	744	}
344		745
345	return 1 if $override;	746	return 1 if $override;
346	}	747	}
347		748
348	0	749	0
349	}	750	}
		751
		752	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		753
		754	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		755
		756	Generate an object-specific event with the given arguments.
		757
		758	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		759	removed in future versions), and there is no public API to access override
		760	results (if you must, access C<@cf::invoke_results> directly).
		761
		762	=back
		763
		764	=cut
350		765
351	#############################################################################	766	#############################################################################
352	# object support	767	# object support
353		768
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 {	769	sub reattach {
		770	# basically do the same as instantiate, without calling instantiate
367	my ($obj) = @_;	771	my ($obj) = @_;
		772
368	my $registry = $obj->registry;	773	my $registry = $obj->registry;
369		774
370	@$registry = ();	775	@$registry = ();
371		776
		777	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		778
372	for my $name (@{ $obj->{_attachment} }) {	779	for my $name (keys %{ $obj->{_attachment} || {} }) {
373	if (my $attach = $attachment{$name}) {	780	if (my $attach = $attachment{$name}) {
374	for (@$attach) {	781	for (@$attach) {
375	my ($klass, @attach) = @$_;	782	my ($klass, @attach) = @$_;
376	_attach @$registry, $klass, @attach;	783	_attach $registry, $klass, @attach;
377	}	784	}
378	} else {	785	} else {
379	warn "object uses attachment '$name' that is not available, postponing.\n";	786	warn "object uses attachment '$name' that is not available, postponing.\n";
380	}	787	}
381	}	788	}
382	}	789	}
383		790
		791	cf::attachable->attach (
		792	prio => -1000000,
		793	on_instantiate => sub {
		794	my ($obj, $data) = @_;
		795
		796	$data = from_json $data;
		797
		798	for (@$data) {
		799	my ($name, $args) = @$_;
		800
		801	$obj->attach ($name, %{$args || {} });
		802	}
		803	},
		804	on_reattach => \&reattach,
		805	on_clone => sub {
		806	my ($src, $dst) = @_;
		807
		808	@{$dst->registry} = @{$src->registry};
		809
		810	%$dst = %$src;
		811
		812	%{$dst->{_attachment}} = %{$src->{_attachment}}
		813	if exists $src->{_attachment};
		814	},
		815	);
		816
384	sub object_freezer_save {	817	sub object_freezer_save {
385	my ($filename, $objs) = @_;	818	my ($filename, $rdata, $objs) = @_;
386		819
387	$filename .= ".pst";	820	sync_job {
		821	if (length $$rdata) {
		822	warn sprintf "saving %s (%d,%d)\n",
		823	$filename, length $$rdata, scalar @$objs;
388		824
389	if (@$objs) {	825	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	826	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	827	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	828	aio_fsync $fh;
393	close $fh;	829	close $fh;
		830
		831	if (@$objs) {
		832	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		833	chmod SAVE_MODE, $fh;
		834	my $data = Storable::nfreeze { version => 1, objs => $objs };
		835	aio_write $fh, 0, (length $data), $data, 0;
		836	aio_fsync $fh;
		837	close $fh;
		838	aio_rename "$filename.pst~", "$filename.pst";
		839	}
		840	} else {
		841	aio_unlink "$filename.pst";
		842	}
		843
394	rename "$filename~", $filename;	844	aio_rename "$filename~", $filename;
		845	} else {
		846	warn "FATAL: $filename~: $!\n";
		847	}
395	} else {	848	} else {
396	unlink $filename;	849	aio_unlink $filename;
		850	aio_unlink "$filename.pst";
		851	}
397	}	852	}
		853	}
		854
		855	sub object_freezer_as_string {
		856	my ($rdata, $objs) = @_;
		857
		858	use Data::Dumper;
		859
		860	$$rdata . Dumper $objs
398	}	861	}
399		862
400	sub object_thawer_load {	863	sub object_thawer_load {
401	my ($filename) = @_;	864	my ($filename) = @_;
402		865
403	open my $fh, "<:raw:perlio", "$filename.pst"	866	my ($data, $av);
		867
		868	(aio_load $filename, $data) >= 0
404	or return;	869	or return;
405		870
406	eval { local $/; (Storable::thaw <$fh>)->{objs} }	871	unless (aio_stat "$filename.pst") {
407	}	872	(aio_load "$filename.pst", $av) >= 0
408		873	or return;
409	attach_to_objects	874	$av = eval { (Storable::thaw $av)->{objs} };
410	prio => -1000000,
411	on_clone => sub {
412	my ($src, $dst) = @_;
413
414	@{$dst->registry} = @{$src->registry};
415
416	%$dst = %$src;
417
418	$dst->{_attachment} = [@{ $src->{_attachment} }]
419	if exists $src->{_attachment};
420	},	875	}
421	;	876
		877	warn sprintf "loading %s (%d)\n",
		878	$filename, length $data, scalar @{$av || []};#d#
		879	return ($data, $av);
		880	}
422		881
423	#############################################################################	882	#############################################################################
424	# old plug-in events	883	# command handling &c
425		884
426	sub inject_event {	885	=item cf::register_command $name => \&callback($ob,$args);
427	my $extension = shift;
428	my $event_code = shift;
429		886
430	my $cb = $hook[$event_code]{$extension}	887	Register a callback for execution when the client sends the user command
431	or return;	888	$name.
432		889
433	&$cb	890	=cut
434	}
435
436	sub inject_global_event {
437	my $event = shift;
438
439	my $cb = $hook[$event]
440	or return;
441
442	List::Util::max map &$_, values %$cb
443	}
444
445	sub inject_command {
446	my ($name, $obj, $params) = @_;
447
448	for my $cmd (@{ $command{$name} }) {
449	$cmd->[1]->($obj, $params);
450	}
451
452	-1
453	}
454		891
455	sub register_command {	892	sub register_command {
456	my ($name, $time, $cb) = @_;	893	my ($name, $cb) = @_;
457		894
458	my $caller = caller;	895	my $caller = caller;
459	#warn "registering command '$name/$time' to '$caller'";	896	#warn "registering command '$name/$time' to '$caller'";
460		897
461	push @{ $command{$name} }, [$time, $cb, $caller];	898	push @{ $COMMAND{$name} }, [$caller, $cb];
462	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
463	}	899	}
		900
		901	=item cf::register_extcmd $name => \&callback($pl,$packet);
		902
		903	Register a callbackf ro execution when the client sends an extcmd packet.
		904
		905	If the callback returns something, it is sent back as if reply was being
		906	called.
		907
		908	=cut
464		909
465	sub register_extcmd {	910	sub register_extcmd {
466	my ($name, $cb) = @_;	911	my ($name, $cb) = @_;
467		912
468	my $caller = caller;	913	my $caller = caller;
469	#warn "registering extcmd '$name' to '$caller'";	914	#warn "registering extcmd '$name' to '$caller'";
470		915
471	$extcmd{$name} = [$cb, $caller];	916	$EXTCMD{$name} = [$cb, $caller];
472	}	917	}
		918
		919	cf::player->attach (
		920	on_command => sub {
		921	my ($pl, $name, $params) = @_;
		922
		923	my $cb = $COMMAND{$name}
		924	or return;
		925
		926	for my $cmd (@$cb) {
		927	$cmd->[1]->($pl->ob, $params);
		928	}
		929
		930	cf::override;
		931	},
		932	on_extcmd => sub {
		933	my ($pl, $buf) = @_;
		934
		935	my $msg = eval { from_json $buf };
		936
		937	if (ref $msg) {
		938	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		939	if (my %reply = $cb->[0]->($pl, $msg)) {
		940	$pl->ext_reply ($msg->{msgid}, %reply);
		941	}
		942	}
		943	} else {
		944	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		945	}
		946
		947	cf::override;
		948	},
		949	);
473		950
474	sub register {	951	sub register {
475	my ($base, $pkg) = @_;	952	my ($base, $pkg) = @_;
476		953
477	#TODO	954	#TODO
…		…
496	. "#line 1 \"$path\"\n{\n"	973	. "#line 1 \"$path\"\n{\n"
497	. (do { local $/; <$fh> })	974	. (do { local $/; <$fh> })
498	. "\n};\n1";	975	. "\n};\n1";
499		976
500	eval $source	977	eval $source
501	or die "$path: $@";	978	or die $@ ? "$path: $@\n"
		979	: "extension disabled.\n";
502		980
503	push @exts, $pkg;	981	push @exts, $pkg;
504	$ext_pkg{$base} = $pkg;	982	$ext_pkg{$base} = $pkg;
505		983
506	# no strict 'refs';	984	# no strict 'refs';
…		…
519	# for my $idx (0 .. $#PLUGIN_EVENT) {	997	# for my $idx (0 .. $#PLUGIN_EVENT) {
520	# delete $hook[$idx]{$pkg};	998	# delete $hook[$idx]{$pkg};
521	# }	999	# }
522		1000
523	# remove commands	1001	# remove commands
524	for my $name (keys %command) {	1002	for my $name (keys %COMMAND) {
525	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1003	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
526		1004
527	if (@cb) {	1005	if (@cb) {
528	$command{$name} = \@cb;	1006	$COMMAND{$name} = \@cb;
529	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
530	} else {	1007	} else {
531	delete $command{$name};
532	delete $COMMAND{"$name\000"};	1008	delete $COMMAND{$name};
533	}	1009	}
534	}	1010	}
535		1011
536	# remove extcmds	1012	# remove extcmds
537	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1013	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
538	delete $extcmd{$name};	1014	delete $EXTCMD{$name};
539	}	1015	}
540		1016
541	if (my $cb = $pkg->can ("unload")) {	1017	if (my $cb = $pkg->can ("unload")) {
542	eval {	1018	eval {
543	$cb->($pkg);	1019	$cb->($pkg);
…		…
547		1023
548	Symbol::delete_package $pkg;	1024	Symbol::delete_package $pkg;
549	}	1025	}
550		1026
551	sub load_extensions {	1027	sub load_extensions {
552	my $LIBDIR = maps_directory "perl";
553
554	for my $ext (<$LIBDIR/*.ext>) {	1028	for my $ext (<$LIBDIR/*.ext>) {
555	next unless -r $ext;	1029	next unless -r $ext;
556	eval {	1030	eval {
557	load_extension $ext;	1031	load_extension $ext;
558	1	1032	1
559	} or warn "$ext not loaded: $@";	1033	} or warn "$ext not loaded: $@";
560	}	1034	}
561	}	1035	}
562		1036
563	sub _perl_reload(&) {
564	my ($msg) = @_;
565
566	$msg->("reloading...");
567
568	eval {
569	# 1. cancel all watchers
570	$_->cancel for Event::all_watchers;
571
572	# 2. unload all extensions
573	for (@exts) {
574	$msg->("unloading <$_>");
575	unload_extension $_;
576	}
577
578	# 3. unload all modules loaded from $LIBDIR
579	while (my ($k, $v) = each %INC) {
580	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
581
582	$msg->("removing <$k>");
583	delete $INC{$k};
584
585	$k =~ s/\.pm$//;
586	$k =~ s/\//::/g;
587
588	if (my $cb = $k->can ("unload_module")) {
589	$cb->();
590	}
591
592	Symbol::delete_package $k;
593	}
594
595	# 4. get rid of safe::, as good as possible
596	Symbol::delete_package "safe::$_"
597	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
598
599	# 5. remove register_script_function callbacks
600	# TODO
601
602	# 6. unload cf.pm "a bit"
603	delete $INC{"cf.pm"};
604
605	# don't, removes xs symbols, too,
606	# and global variables created in xs
607	#Symbol::delete_package __PACKAGE__;
608
609	# 7. reload cf.pm
610	$msg->("reloading cf.pm");
611	require cf;
612	};
613	$msg->($@) if $@;
614
615	$msg->("reloaded");
616	};
617
618	sub perl_reload() {
619	_perl_reload {
620	warn $_[0];
621	print "$_[0]\n";
622	};
623	}
624
625	register_command "perl-reload", 0, sub {
626	my ($who, $arg) = @_;
627
628	if ($who->flag (FLAG_WIZ)) {
629	_perl_reload {
630	warn $_[0];
631	$who->message ($_[0]);
632	};
633	}
634	};
635
636	#############################################################################
637	# extcmd framework, basically convert ext <msg>
638	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
639
640	attach_to_players
641	on_extcmd => sub {
642	my ($pl, $buf) = @_;
643
644	my $msg = eval { from_json $buf };
645
646	if (ref $msg) {
647	if (my $cb = $extcmd{$msg->{msgtype}}) {
648	if (my %reply = $cb->[0]->($pl, $msg)) {
649	$pl->ext_reply ($msg->{msgid}, %reply);
650	}
651	}
652	} else {
653	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
654	}
655
656	cf::override;
657	},
658	;
659
660	#############################################################################	1037	#############################################################################
661	# load/save/clean perl data associated with a map	1038	# load/save/clean perl data associated with a map
662		1039
663	*cf::mapsupport::on_clean = sub {	1040	*cf::mapsupport::on_clean = sub {
664	my ($map) = @_;	1041	my ($map) = @_;
665		1042
666	my $path = $map->tmpname;	1043	my $path = $map->tmpname;
667	defined $path or return;	1044	defined $path or return;
668		1045
669	unlink "$path.cfperl";
670	unlink "$path.pst";	1046	unlink "$path.pst";
671	};	1047	};
672		1048
673	*cf::mapsupport::on_swapin =
674	*cf::mapsupport::on_load = sub {
675	my ($map) = @_;
676
677	my $path = $map->tmpname;
678	$path = $map->path unless defined $path;
679
680	open my $fh, "<:raw", "$path.cfperl"
681	or return; # no perl data
682
683	my $data = Storable::thaw do { local $/; <$fh> };
684
685	$data->{version} <= 1
686	or return; # too new
687
688	$map->_set_obs ($data->{obs});
689	};
690
691	attach_to_maps prio => -10000, package => cf::mapsupport::;	1049	cf::map->attach (prio => -10000, package => cf::mapsupport::);
692		1050
693	#############################################################################	1051	#############################################################################
694	# load/save perl data associated with player->ob objects	1052	# load/save perl data associated with player->ob objects
695		1053
696	sub all_objects(@) {	1054	sub all_objects(@) {
697	@_, map all_objects ($_->inv), @_	1055	@_, map all_objects ($_->inv), @_
698	}	1056	}
699		1057
700	attach_to_players	1058	# TODO: compatibility cruft, remove when no longer needed
		1059	cf::player->attach (
701	on_load => sub {	1060	on_load => sub {
702	my ($pl, $path) = @_;	1061	my ($pl, $path) = @_;
703		1062
704	for my $o (all_objects $pl->ob) {	1063	for my $o (all_objects $pl->ob) {
705	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1064	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
707		1066
708	%$o = %{ Storable::thaw pack "H*", $value };	1067	%$o = %{ Storable::thaw pack "H*", $value };
709	}	1068	}
710	}	1069	}
711	},	1070	},
712	;	1071	);
713		1072
714	#############################################################################	1073	#############################################################################
715	# core extensions - in perl	1074
		1075	=head2 CORE EXTENSIONS
		1076
		1077	Functions and methods that extend core crossfire objects.
		1078
		1079	=head3 cf::player
		1080
		1081	=over 4
716		1082
717	=item cf::player::exists $login	1083	=item cf::player::exists $login
718		1084
719	Returns true when the given account exists.	1085	Returns true when the given account exists.
720		1086
…		…
723	sub cf::player::exists($) {	1089	sub cf::player::exists($) {
724	cf::player::find $_[0]	1090	cf::player::find $_[0]
725	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1091	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
726	}	1092	}
727		1093
		1094	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1095
		1096	Sends an ext reply to the player.
		1097
		1098	=cut
		1099
		1100	sub cf::player::ext_reply($$$%) {
		1101	my ($self, $id, %msg) = @_;
		1102
		1103	$msg{msgid} = $id;
		1104
		1105	$self->send ("ext " . to_json \%msg);
		1106	}
		1107
		1108	=back
		1109
		1110
		1111	=head3 cf::map
		1112
		1113	=over 4
		1114
		1115	=cut
		1116
		1117	package cf::map;
		1118
		1119	use Fcntl;
		1120	use Coro::AIO;
		1121
		1122	our $MAX_RESET = 3600;
		1123	our $DEFAULT_RESET = 3000;
		1124
		1125	sub generate_random_map {
		1126	my ($path, $rmp) = @_;
		1127
		1128	# mit "rum" bekleckern, nicht
		1129	cf::map::_create_random_map
		1130	$path,
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region})
		1142	}
		1143
		1144	# and all this just because we cannot iterate over
		1145	# all maps in C++...
		1146	sub change_all_map_light {
		1147	my ($change) = @_;
		1148
		1149	$_->change_map_light ($change)
		1150	for grep $_->outdoor, values %cf::MAP;
		1151	}
		1152
		1153	sub try_load_header($) {
		1154	my ($path) = @_;
		1155
		1156	utf8::encode $path;
		1157	aio_open $path, O_RDONLY, 0
		1158	or return;
		1159
		1160	my $map = cf::map::new
		1161	or return;
		1162
		1163	# for better error messages only, will be overwritten
		1164	$map->path ($path);
		1165
		1166	$map->load_header ($path)
		1167	or return;
		1168
		1169	$map->{load_path} = $path;
		1170
		1171	$map
		1172	}
		1173
		1174	sub find;
		1175	sub find {
		1176	my ($path, $origin) = @_;
		1177
		1178	#warn "find<$path,$origin>\n";#d#
		1179
		1180	$path = new cf::path $path, $origin && $origin->path;
		1181	my $key = $path->as_string;
		1182
		1183	cf::lock_wait "map_find:$key";
		1184
		1185	$cf::MAP{$key} || do {
		1186	my $guard = cf::lock_acquire "map_find:$key";
		1187
		1188	# do it the slow way
		1189	my $map = try_load_header $path->save_path;
		1190
		1191	Coro::cede;
		1192
		1193	if ($map) {
		1194	$map->last_access ((delete $map->{last_access})
		1195	|| $cf::RUNTIME); #d#
		1196	# safety
		1197	$map->{instantiate_time} = $cf::RUNTIME
		1198	if $map->{instantiate_time} > $cf::RUNTIME;
		1199	} else {
		1200	if (my $rmp = $path->random_map_params) {
		1201	$map = generate_random_map $key, $rmp;
		1202	} else {
		1203	$map = try_load_header $path->load_path;
		1204	}
		1205
		1206	$map or return;
		1207
		1208	$map->{load_original} = 1;
		1209	$map->{instantiate_time} = $cf::RUNTIME;
		1210	$map->last_access ($cf::RUNTIME);
		1211	$map->instantiate;
		1212
		1213	# per-player maps become, after loading, normal maps
		1214	$map->per_player (0) if $path->{user_rel};
		1215	}
		1216
		1217	$map->path ($key);
		1218	$map->{path} = $path;
		1219	$map->{last_save} = $cf::RUNTIME;
		1220
		1221	Coro::cede;
		1222
		1223	if ($map->should_reset) {
		1224	$map->reset;
		1225	undef $guard;
		1226	$map = find $path
		1227	or return;
		1228	}
		1229
		1230	$cf::MAP{$key} = $map
		1231	}
		1232	}
		1233
		1234	sub load {
		1235	my ($self) = @_;
		1236
		1237	my $path = $self->{path};
		1238	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1239
		1240	return if $self->in_memory != cf::MAP_SWAPPED;
		1241
		1242	$self->in_memory (cf::MAP_LOADING);
		1243
		1244	$self->alloc;
		1245	$self->load_objects ($self->{load_path}, 1)
		1246	or return;
		1247
		1248	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1249	if delete $self->{load_original};
		1250
		1251	if (my $uniq = $path->uniq_path) {
		1252	utf8::encode $uniq;
		1253	if (aio_open $uniq, O_RDONLY, 0) {
		1254	$self->clear_unique_items;
		1255	$self->load_objects ($uniq, 0);
		1256	}
		1257	}
		1258
		1259	Coro::cede;
		1260
		1261	# now do the right thing for maps
		1262	$self->link_multipart_objects;
		1263
		1264	if ($self->{path}->is_style_map) {
		1265	$self->{deny_save} = 1;
		1266	$self->{deny_reset} = 1;
		1267	} else {
		1268	$self->fix_auto_apply;
		1269	$self->decay_objects;
		1270	$self->update_buttons;
		1271	$self->set_darkness_map;
		1272	$self->difficulty ($self->estimate_difficulty)
		1273	unless $self->difficulty;
		1274	$self->activate;
		1275	}
		1276
		1277	Coro::cede;
		1278
		1279	$self->in_memory (cf::MAP_IN_MEMORY);
		1280	}
		1281
		1282	sub find_sync {
		1283	my ($path, $origin) = @_;
		1284
		1285	cf::sync_job { cf::map::find $path, $origin }
		1286	}
		1287
		1288	sub do_load_sync {
		1289	my ($map) = @_;
		1290
		1291	cf::sync_job { $map->load };
		1292	}
		1293
		1294	sub save {
		1295	my ($self) = @_;
		1296
		1297	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1298
		1299	$self->{last_save} = $cf::RUNTIME;
		1300
		1301	return unless $self->dirty;
		1302
		1303	my $save = $self->{path}->save_path; utf8::encode $save;
		1304	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1305
		1306	$self->{load_path} = $save;
		1307
		1308	return if $self->{deny_save};
		1309
		1310	local $self->{last_access} = $self->last_access;#d#
		1311
		1312	if ($uniq) {
		1313	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1314	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1315	} else {
		1316	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1317	}
		1318	}
		1319
		1320	sub swap_out {
		1321	my ($self) = @_;
		1322
		1323	# save first because save cedes
		1324	$self->save;
		1325
		1326	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1327
		1328	return if $self->players;
		1329	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1330	return if $self->{deny_save};
		1331
		1332	$self->clear;
		1333	$self->in_memory (cf::MAP_SWAPPED);
		1334	}
		1335
		1336	sub reset_at {
		1337	my ($self) = @_;
		1338
		1339	# TODO: safety, remove and allow resettable per-player maps
		1340	return 1e99 if $self->{path}{user_rel};
		1341	return 1e99 if $self->{deny_reset};
		1342
		1343	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1344	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1345
		1346	$time + $to
		1347	}
		1348
		1349	sub should_reset {
		1350	my ($self) = @_;
		1351
		1352	$self->reset_at <= $cf::RUNTIME
		1353	}
		1354
		1355	sub unlink_save {
		1356	my ($self) = @_;
		1357
		1358	utf8::encode (my $save = $self->{path}->save_path);
		1359	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1360	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1361	}
		1362
		1363	sub rename {
		1364	my ($self, $new_path) = @_;
		1365
		1366	$self->unlink_save;
		1367
		1368	delete $cf::MAP{$self->path};
		1369	$self->{path} = new cf::path $new_path;
		1370	$self->path ($self->{path}->as_string);
		1371	$cf::MAP{$self->path} = $self;
		1372
		1373	$self->save;
		1374	}
		1375
		1376	sub reset {
		1377	my ($self) = @_;
		1378
		1379	my $lock = cf::lock_acquire "map_data:" . $self->path;
		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 "~" . $ob->name . "/" . $map->{path}{path};
		1410	}
		1411
		1412	$map
		1413	}
		1414
		1415	sub emergency_save {
		1416	my $freeze_guard = cf::freeze_mainloop;
		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
728	=item $player->reply ($npc, $msg[, $flags])	1437	=item $player_object->reply ($npc, $msg[, $flags])
729		1438
730	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>
731	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
732	dialogue with the given NPC character.	1441	dialogue with the given NPC character.
733		1442
734	=cut	1443	=cut
735		1444
736	# rough implementation of a future "reply" method that works	1445	# rough implementation of a future "reply" method that works
737	# with dialog boxes.	1446	# with dialog boxes.
		1447	#TODO: the first argument must go, split into a $npc->reply_to ( method
738	sub cf::object::player::reply($$$;$) {	1448	sub cf::object::player::reply($$$;$) {
739	my ($self, $npc, $msg, $flags) = @_;	1449	my ($self, $npc, $msg, $flags) = @_;
740		1450
741	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1451	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
742		1452
…		…
746	$msg = $npc->name . " says: $msg" if $npc;	1456	$msg = $npc->name . " says: $msg" if $npc;
747	$self->message ($msg, $flags);	1457	$self->message ($msg, $flags);
748	}	1458	}
749	}	1459	}
750		1460
751	=item $player->ext_reply ($msgid, $msgtype, %msg)	1461	=item $player_object->may ("access")
752		1462
753	Sends an ext reply to the player.	1463	Returns wether the given player is authorized to access resource "access"
		1464	(e.g. "command_wizcast").
754		1465
755	=cut	1466	=cut
756		1467
757	sub cf::player::ext_reply($$$%) {	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 $map;
		1517
		1518	unless ($map) {
		1519	($map, $x, $y) = @$EMERGENCY_POSITION;
		1520	$map = cf::map::find $map
		1521	or die "FATAL: cannot load emergency map\n";
		1522	}
		1523	}
		1524
		1525	($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
		1556	$pl->ob->enter_link;
		1557	(async {
		1558	# we need this sleep as the login has a concurrent enter_exit running
		1559	# and this sleep increases chances of the player not ending up in scorn
		1560	$pl->ob->reply (undef,
		1561	"There was an internal problem at your last logout, "
		1562	. "the server will try to bring you to your intended destination in a second.",
		1563	cf::NDI_RED);
		1564	Coro::Timer::sleep 1;
		1565	$pl->ob->leave_link;
		1566	})->prio (2);
		1567	}
		1568	},
		1569	);
		1570
		1571	=item $player_object->goto ($path, $x, $y)
		1572
		1573	=cut
		1574
		1575	sub cf::object::player::goto {
		1576	my ($self, $path, $x, $y) = @_;
		1577
		1578	$self->enter_link;
		1579
		1580	(async {
		1581	$path = new cf::path $path;
		1582
		1583	my $map = cf::map::find $path->as_string;
		1584	$map = $map->customise_for ($self) if $map;
		1585
		1586	# warn "entering ", $map->path, " at ($x, $y)\n"
		1587	# if $map;
		1588
		1589	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1590
		1591	$self->leave_link ($map, $x, $y);
		1592	})->prio (1);
		1593	}
		1594
		1595	=item $player_object->enter_exit ($exit_object)
		1596
		1597	=cut
		1598
		1599	sub parse_random_map_params {
		1600	my ($spec) = @_;
		1601
		1602	my $rmp = { # defaults
		1603	xsize => 10,
		1604	ysize => 10,
		1605	};
		1606
		1607	for (split /\n/, $spec) {
		1608	my ($k, $v) = split /\s+/, $_, 2;
		1609
		1610	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1611	}
		1612
		1613	$rmp
		1614	}
		1615
		1616	sub prepare_random_map {
		1617	my ($exit) = @_;
		1618
		1619	# all this does is basically replace the /! path by
		1620	# a new random map path (?random/...) with a seed
		1621	# that depends on the exit object
		1622
		1623	my $rmp = parse_random_map_params $exit->msg;
		1624
		1625	if ($exit->map) {
		1626	$rmp->{region} = $exit->map->region_name;
		1627	$rmp->{origin_map} = $exit->map->path;
		1628	$rmp->{origin_x} = $exit->x;
		1629	$rmp->{origin_y} = $exit->y;
		1630	}
		1631
		1632	$rmp->{random_seed} ||= $exit->random_seed;
		1633
		1634	my $data = cf::to_json $rmp;
		1635	my $md5 = Digest::MD5::md5_hex $data;
		1636
		1637	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1638	aio_write $fh, 0, (length $data), $data, 0;
		1639
		1640	$exit->slaying ("?random/$md5");
		1641	$exit->msg (undef);
		1642	}
		1643	}
		1644
		1645	sub cf::object::player::enter_exit {
758	my ($self, $id, %msg) = @_;	1646	my ($self, $exit) = @_;
759		1647
760	$msg{msgid} = $id;	1648	return unless $self->type == cf::PLAYER;
761		1649
762	$self->send ("ext " . to_json \%msg);	1650	$self->enter_link;
763	}
764		1651
765	#############################################################################	1652	(async {
766	# map scripting support	1653	$self->deactivate_recursive; # just to be sure
		1654	unless (eval {
		1655	prepare_random_map $exit
		1656	if $exit->slaying eq "/!";
		1657
		1658	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1659	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1660
		1661	1;
		1662	}) {
		1663	$self->message ("Something went wrong deep within the crossfire server. "
		1664	. "I'll try to bring you back to the map you were before. "
		1665	. "Please report this to the dungeon master",
		1666	cf::NDI_UNIQUE | cf::NDI_RED);
		1667
		1668	warn "ERROR in enter_exit: $@";
		1669	$self->leave_link;
		1670	}
		1671	})->prio (1);
		1672	}
		1673
		1674	=head3 cf::client
		1675
		1676	=over 4
		1677
		1678	=item $client->send_drawinfo ($text, $flags)
		1679
		1680	Sends a drawinfo packet to the client. Circumvents output buffering so
		1681	should not be used under normal circumstances.
		1682
		1683	=cut
		1684
		1685	sub cf::client::send_drawinfo {
		1686	my ($self, $text, $flags) = @_;
		1687
		1688	utf8::encode $text;
		1689	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1690	}
		1691
		1692
		1693	=item $success = $client->query ($flags, "text", \&cb)
		1694
		1695	Queues a query to the client, calling the given callback with
		1696	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1697	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1698
		1699	Queries can fail, so check the return code. Or don't, as queries will become
		1700	reliable at some point in the future.
		1701
		1702	=cut
		1703
		1704	sub cf::client::query {
		1705	my ($self, $flags, $text, $cb) = @_;
		1706
		1707	return unless $self->state == ST_PLAYING
		1708	|| $self->state == ST_SETUP
		1709	|| $self->state == ST_CUSTOM;
		1710
		1711	$self->state (ST_CUSTOM);
		1712
		1713	utf8::encode $text;
		1714	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1715
		1716	$self->send_packet ($self->{query_queue}[0][0])
		1717	if @{ $self->{query_queue} } == 1;
		1718	}
		1719
		1720	cf::client->attach (
		1721	on_reply => sub {
		1722	my ($ns, $msg) = @_;
		1723
		1724	# this weird shuffling is so that direct followup queries
		1725	# get handled first
		1726	my $queue = delete $ns->{query_queue}
		1727	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1728
		1729	(shift @$queue)->[1]->($msg);
		1730
		1731	push @{ $ns->{query_queue} }, @$queue;
		1732
		1733	if (@{ $ns->{query_queue} } == @$queue) {
		1734	if (@$queue) {
		1735	$ns->send_packet ($ns->{query_queue}[0][0]);
		1736	} else {
		1737	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1738	}
		1739	}
		1740	},
		1741	);
		1742
		1743	=item $client->async (\&cb)
		1744
		1745	Create a new coroutine, running the specified callback. The coroutine will
		1746	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1747	or loss of connection).
		1748
		1749	=cut
		1750
		1751	sub cf::client::async {
		1752	my ($self, $cb) = @_;
		1753
		1754	my $coro = &Coro::async ($cb);
		1755
		1756	$coro->on_destroy (sub {
		1757	delete $self->{_coro}{$coro+0};
		1758	});
		1759
		1760	$self->{_coro}{$coro+0} = $coro;
		1761
		1762	$coro
		1763	}
		1764
		1765	cf::client->attach (
		1766	on_destroy => sub {
		1767	my ($ns) = @_;
		1768
		1769	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1770	},
		1771	);
		1772
		1773	=back
		1774
		1775
		1776	=head2 SAFE SCRIPTING
		1777
		1778	Functions that provide a safe environment to compile and execute
		1779	snippets of perl code without them endangering the safety of the server
		1780	itself. Looping constructs, I/O operators and other built-in functionality
		1781	is not available in the safe scripting environment, and the number of
		1782	functions and methods that can be called is greatly reduced.
		1783
		1784	=cut
767		1785
768	our $safe = new Safe "safe";	1786	our $safe = new Safe "safe";
769	our $safe_hole = new Safe::Hole;	1787	our $safe_hole = new Safe::Hole;
770		1788
771	$SIG{FPE} = 'IGNORE';	1789	$SIG{FPE} = 'IGNORE';
772		1790
773	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1791	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
774		1792
775	# here we export the classes and methods available to script code	1793	# here we export the classes and methods available to script code
776		1794
		1795	=pod
		1796
		1797	The following fucntions and emthods are available within a safe environment:
		1798
		1799	cf::object contr pay_amount pay_player map
		1800	cf::object::player player
		1801	cf::player peaceful
		1802	cf::map trigger
		1803
		1804	=cut
		1805
777	for (	1806	for (
778	["cf::object" => qw(contr pay_amount pay_player)],	1807	["cf::object" => qw(contr pay_amount pay_player map)],
779	["cf::object::player" => qw(player)],	1808	["cf::object::player" => qw(player)],
780	["cf::player" => qw(peaceful)],	1809	["cf::player" => qw(peaceful)],
		1810	["cf::map" => qw(trigger)],
781	) {	1811	) {
782	no strict 'refs';	1812	no strict 'refs';
783	my ($pkg, @funs) = @$_;	1813	my ($pkg, @funs) = @$_;
784	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1814	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
785	for @funs;	1815	for @funs;
786	}	1816	}
		1817
		1818	=over 4
		1819
		1820	=item @retval = safe_eval $code, [var => value, ...]
		1821
		1822	Compiled and executes the given perl code snippet. additional var/value
		1823	pairs result in temporary local (my) scalar variables of the given name
		1824	that are available in the code snippet. Example:
		1825
		1826	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1827
		1828	=cut
787		1829
788	sub safe_eval($;@) {	1830	sub safe_eval($;@) {
789	my ($code, %vars) = @_;	1831	my ($code, %vars) = @_;
790		1832
791	my $qcode = $code;	1833	my $qcode = $code;
…		…
814	}	1856	}
815		1857
816	wantarray ? @res : $res[0]	1858	wantarray ? @res : $res[0]
817	}	1859	}
818		1860
		1861	=item cf::register_script_function $function => $cb
		1862
		1863	Register a function that can be called from within map/npc scripts. The
		1864	function should be reasonably secure and should be put into a package name
		1865	like the extension.
		1866
		1867	Example: register a function that gets called whenever a map script calls
		1868	C<rent::overview>, as used by the C<rent> extension.
		1869
		1870	cf::register_script_function "rent::overview" => sub {
		1871	...
		1872	};
		1873
		1874	=cut
		1875
819	sub register_script_function {	1876	sub register_script_function {
820	my ($fun, $cb) = @_;	1877	my ($fun, $cb) = @_;
821		1878
822	no strict 'refs';	1879	no strict 'refs';
823	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1880	*{"safe::$fun"} = $safe_hole->wrap ($cb);
824	}	1881	}
825		1882
		1883	=back
		1884
		1885	=cut
		1886
		1887	#############################################################################
		1888
		1889	=head2 EXTENSION DATABASE SUPPORT
		1890
		1891	Crossfire maintains a very simple database for extension use. It can
		1892	currently store anything that can be serialised using Storable, which
		1893	excludes objects.
		1894
		1895	The parameter C<$family> should best start with the name of the extension
		1896	using it, it should be unique.
		1897
		1898	=over 4
		1899
		1900	=item $hashref = cf::db_get $family
		1901
		1902	Return a hashref for use by the extension C<$family>, which can be
		1903	modified. After modifications, you have to call C<cf::db_dirty> or
		1904	C<cf::db_sync>.
		1905
		1906	=item $value = cf::db_get $family => $key
		1907
		1908	Returns a single value from the database
		1909
		1910	=item cf::db_put $family => $hashref
		1911
		1912	Stores the given family hashref into the database. Updates are delayed, if
		1913	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1914
		1915	=item cf::db_put $family => $key => $value
		1916
		1917	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1918	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1919
		1920	=item cf::db_dirty
		1921
		1922	Marks the database as dirty, to be updated at a later time.
		1923
		1924	=item cf::db_sync
		1925
		1926	Immediately write the database to disk I<if it is dirty>.
		1927
		1928	=cut
		1929
		1930	our $DB;
		1931
		1932	{
		1933	my $path = cf::localdir . "/database.pst";
		1934
		1935	sub db_load() {
		1936	$DB = stat $path ? Storable::retrieve $path : { };
		1937	}
		1938
		1939	my $pid;
		1940
		1941	sub db_save() {
		1942	waitpid $pid, 0 if $pid;
		1943	if (0 == ($pid = fork)) {
		1944	$DB->{_meta}{version} = 1;
		1945	Storable::nstore $DB, "$path~";
		1946	rename "$path~", $path;
		1947	cf::_exit 0 if defined $pid;
		1948	}
		1949	}
		1950
		1951	my $dirty;
		1952
		1953	sub db_sync() {
		1954	db_save if $dirty;
		1955	undef $dirty;
		1956	}
		1957
		1958	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1959	db_sync;
		1960	});
		1961
		1962	sub db_dirty() {
		1963	$dirty = 1;
		1964	$idle->start;
		1965	}
		1966
		1967	sub db_get($;$) {
		1968	@_ >= 2
		1969	? $DB->{$_[0]}{$_[1]}
		1970	: ($DB->{$_[0]} ||= { })
		1971	}
		1972
		1973	sub db_put($$;$) {
		1974	if (@_ >= 3) {
		1975	$DB->{$_[0]}{$_[1]} = $_[2];
		1976	} else {
		1977	$DB->{$_[0]} = $_[1];
		1978	}
		1979	db_dirty;
		1980	}
		1981
		1982	cf::global->attach (
		1983	prio => 10000,
		1984	on_cleanup => sub {
		1985	db_sync;
		1986	},
		1987	);
		1988	}
		1989
826	#############################################################################	1990	#############################################################################
827	# the server's main()	1991	# the server's main()
828		1992
		1993	sub cfg_load {
		1994	open my $fh, "<:utf8", cf::confdir . "/config"
		1995	or return;
		1996
		1997	local $/;
		1998	*CFG = YAML::Syck::Load <$fh>;
		1999
		2000	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2001
		2002	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2003	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2004
		2005	if (exists $CFG{mlockall}) {
		2006	eval {
		2007	$CFG{mlockall} ? &mlockall : &munlockall
		2008	and die "WARNING: m(un)lockall failed: $!\n";
		2009	};
		2010	warn $@ if $@;
		2011	}
		2012	}
		2013
829	sub main {	2014	sub main {
		2015	# we must not ever block the main coroutine
		2016	local $Coro::idle = sub {
		2017	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2018	async { Event::one_event };
		2019	};
		2020
		2021	cfg_load;
		2022	db_load;
		2023	load_extensions;
830	Event::loop;	2024	Event::loop;
831	}	2025	}
832		2026
833	#############################################################################	2027	#############################################################################
834	# initialisation	2028	# initialisation
835		2029
		2030	sub reload() {
		2031	# can/must only be called in main
		2032	if ($Coro::current != $Coro::main) {
		2033	warn "can only reload from main coroutine\n";
		2034	return;
		2035	}
		2036
		2037	warn "reloading...";
		2038
		2039	my $guard = freeze_mainloop;
		2040	cf::emergency_save;
		2041
		2042	eval {
		2043	# if anything goes wrong in here, we should simply crash as we already saved
		2044
		2045	# cancel all watchers
		2046	for (Event::all_watchers) {
		2047	$_->cancel if $_->data & WF_AUTOCANCEL;
		2048	}
		2049
		2050	# cancel all extension coros
		2051	$_->cancel for values %EXT_CORO;
		2052	%EXT_CORO = ();
		2053
		2054	# unload all extensions
		2055	for (@exts) {
		2056	warn "unloading <$_>";
		2057	unload_extension $_;
		2058	}
		2059
		2060	# unload all modules loaded from $LIBDIR
		2061	while (my ($k, $v) = each %INC) {
		2062	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2063
		2064	warn "removing <$k>";
		2065	delete $INC{$k};
		2066
		2067	$k =~ s/\.pm$//;
		2068	$k =~ s/\//::/g;
		2069
		2070	if (my $cb = $k->can ("unload_module")) {
		2071	$cb->();
		2072	}
		2073
		2074	Symbol::delete_package $k;
		2075	}
		2076
		2077	# sync database to disk
		2078	cf::db_sync;
		2079	IO::AIO::flush;
		2080
		2081	# get rid of safe::, as good as possible
		2082	Symbol::delete_package "safe::$_"
		2083	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2084
		2085	# remove register_script_function callbacks
		2086	# TODO
		2087
		2088	# unload cf.pm "a bit"
		2089	delete $INC{"cf.pm"};
		2090
		2091	# don't, removes xs symbols, too,
		2092	# and global variables created in xs
		2093	#Symbol::delete_package __PACKAGE__;
		2094
		2095	# reload cf.pm
		2096	warn "reloading cf.pm";
		2097	require cf;
		2098	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2099
		2100	# load config and database again
		2101	cf::cfg_load;
		2102	cf::db_load;
		2103
		2104	# load extensions
		2105	warn "load extensions";
		2106	cf::load_extensions;
		2107
		2108	# reattach attachments to objects
		2109	warn "reattach";
		2110	_global_reattach;
		2111	};
		2112
		2113	if ($@) {
		2114	warn $@;
		2115	warn "error while reloading, exiting.";
		2116	exit 1;
		2117	}
		2118
		2119	warn "reloaded successfully";
		2120	};
		2121
		2122	#############################################################################
		2123
		2124	unless ($LINK_MAP) {
		2125	$LINK_MAP = cf::map::new;
		2126
		2127	$LINK_MAP->width (41);
		2128	$LINK_MAP->height (41);
		2129	$LINK_MAP->alloc;
		2130	$LINK_MAP->path ("{link}");
		2131	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2132	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2133
		2134	# dirty hack because... archetypes are not yet loaded
		2135	Event->timer (
		2136	after => 2,
		2137	cb => sub {
		2138	$_[0]->w->cancel;
		2139
		2140	# provide some exits "home"
		2141	my $exit = cf::object::new "exit";
		2142
		2143	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2144	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2145	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2146
		2147	$LINK_MAP->insert ($exit->clone, 19, 19);
		2148	$LINK_MAP->insert ($exit->clone, 19, 20);
		2149	$LINK_MAP->insert ($exit->clone, 19, 21);
		2150	$LINK_MAP->insert ($exit->clone, 20, 19);
		2151	$LINK_MAP->insert ($exit->clone, 20, 21);
		2152	$LINK_MAP->insert ($exit->clone, 21, 19);
		2153	$LINK_MAP->insert ($exit->clone, 21, 20);
		2154	$LINK_MAP->insert ($exit->clone, 21, 21);
		2155
		2156	$exit->destroy;
		2157	});
		2158
		2159	$LINK_MAP->{deny_save} = 1;
		2160	$LINK_MAP->{deny_reset} = 1;
		2161
		2162	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2163	}
		2164
836	register "<global>", __PACKAGE__;	2165	register "<global>", __PACKAGE__;
837		2166
		2167	register_command "reload" => sub {
		2168	my ($who, $arg) = @_;
		2169
		2170	if ($who->flag (FLAG_WIZ)) {
		2171	$who->message ("start of reload.");
		2172	reload;
		2173	$who->message ("end of reload.");
		2174	}
		2175	};
		2176
838	unshift @INC, $LIBDIR;	2177	unshift @INC, $LIBDIR;
839		2178
840	load_extensions;
841
842	$TICK_WATCHER = Event->timer (	2179	$TICK_WATCHER = Event->timer (
		2180	reentrant => 0,
843	prio => 1,	2181	prio => 0,
844	at => $NEXT_TICK || 1,	2182	at => $NEXT_TICK || $TICK,
		2183	data => WF_AUTOCANCEL,
845	cb => sub {	2184	cb => sub {
846	cf::server_tick; # one server iteration	2185	cf::server_tick; # one server iteration
847		2186	$RUNTIME += $TICK;
848	my $NOW = Event::time;
849	$NEXT_TICK += $TICK;	2187	$NEXT_TICK += $TICK;
850		2188
851	# if we are delayed by four ticks, skip them all	2189	# if we are delayed by four ticks or more, skip them all
852	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2190	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
853		2191
854	$TICK_WATCHER->at ($NEXT_TICK);	2192	$TICK_WATCHER->at ($NEXT_TICK);
855	$TICK_WATCHER->start;	2193	$TICK_WATCHER->start;
856	},	2194	},
857	);	2195	);
858		2196
859	_reload_2;	2197	IO::AIO::max_poll_time $TICK * 0.2;
		2198
		2199	Event->io (
		2200	fd => IO::AIO::poll_fileno,
		2201	poll => 'r',
		2202	prio => 5,
		2203	data => WF_AUTOCANCEL,
		2204	cb => \&IO::AIO::poll_cb,
		2205	);
		2206
		2207	Event->timer (
		2208	data => WF_AUTOCANCEL,
		2209	after => 0,
		2210	interval => 10,
		2211	cb => sub {
		2212	(Coro::unblock_sub {
		2213	write_runtime
		2214	or warn "ERROR: unable to write runtime file: $!";
		2215	})->();
		2216	},
		2217	);
		2218
		2219	END { cf::emergency_save }
860		2220
861	1	2221	1
862		2222

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