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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.54 by root, Tue Aug 29 14:49:28 2006 UTC vs.
Revision 1.171 by root, Sun Jan 14 12:24:48 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 Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
26	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
		53
		54	our %CFG;
		55
		56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
		87
		88	#############################################################################
		89
		90	=head2 GLOBAL VARIABLES
		91
		92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
		102
		103	=item $cf::LIBDIR
		104
		105	The perl library directory, where extensions and cf-specific modules can
		106	be found. It will be added to C<@INC> automatically.
		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
		112	=item $cf::TICK
		113
		114	The interval between server ticks, in seconds.
		115
		116	=item %cf::CFG
		117
		118	Configuration for the server, loaded from C</etc/crossfire/config>, or
		119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
		127
		128	=back
		129
		130	=cut
27		131
28	BEGIN {	132	BEGIN {
29	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
31	$msg .= "\n"	137	$msg .= "\n"
32	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
33		139
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
36	};	141	};
37	}	142	}
38		143
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	148	@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';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		150
75	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	152	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
78	no strict 'refs';	160	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	162	}
81		163
82	$Event::DIED = sub {	164	$Event::DIED = sub {
83	warn "error in event callback: @_";	165	warn "error in event callback: @_";
84	};	166	};
85		167
86	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		169
92	#############################################################################	170	=over 4
93	# utility functions	171
		172	=item dumpval $ref
		173
		174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
94		194
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
96		202
97	sub from_json($) {	203	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	205	JSON::Syck::Load $_[0]
100	}	206	}
101		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
102	sub to_json($) {	214	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
105	}	217	}
106		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
		368	}
		369
		370	=back
		371
		372	=cut
		373
107	#############################################################################	374	#############################################################################
108	# "new" plug-in system
109		375
110	=item $object->attach ($attachment, key => $value...)	376	=head2 ATTACHABLE OBJECTS
111		377
112	=item $object->detach ($attachment)	378	Many objects in crossfire are so-called attachable objects. That means you can
		379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
113		381
114	Attach/detach a pre-registered attachment to an object.	382	In the following description, CLASS can be any of C<global>, C<object>
		383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
115		385
116	=item $player->attach ($attachment, key => $value...)	386	=over 4
117		387
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	388	=item $attachable->attach ($attachment, key => $value...)
123		389
124	=item $map->detach ($attachment)	390	=item $attachable->detach ($attachment)
125		391
126	Attach/detach a pre-registered attachment to a map.	392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
127		394
128	=item cf::attach_global ...	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
129		397
130	Attach handlers for global events.	398	$obj->attach (minesweeper => width => 10, height => 10);
131		399
132	This and all following C<attach_*>-functions expect any number of the	400	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	401
		402	Checks wether the named attachment is currently attached to the object.
		403
		404	=item cf::CLASS->attach ...
		405
		406	=item cf::CLASS->detach ...
		407
		408	Define an anonymous attachment and attach it to all objects of the given
		409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($pl) = @_;
		418	...
		419	},
		420	);
		421
		422	Example, attach to the jeweler skill:
		423
		424	cf::object->attach (
		425	type => cf::SKILL,
		426	subtype => cf::SK_JEWELER,
		427	on_use_skill => sub {
		428	my ($sk, $ob, $part, $dir, $msg) = @_;
		429	...
		430	},
		431	);
		432
		433	=item cf::CLASS::attachment $name, ...
		434
		435	Register an attachment by C<$name> through which attachable objects of the
		436	given CLASS can refer to this attachment.
		437
		438	Some classes such as crossfire maps and objects can specify attachments
		439	that are attached at load/instantiate time, thus the need for a name.
		440
		441	These calls expect any number of the following handler/hook descriptions:
134		442
135	=over 4	443	=over 4
136		444
137	=item prio => $number	445	=item prio => $number
138		446
…		…
140	by another C<prio> setting). Lower priority handlers get executed	448	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	449	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	450	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	451	unless you know what you are doing.
144		452
		453	=item type => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
145	=item on_I<event> => \&cb	459	=item on_I<event> => \&cb
146		460
147	Call the given code reference whenever the named event happens (event is	461	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	462	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	463	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	473	object/class are recognised.
160		474
161	=back	475	=back
162		476
163	=item cf::attach_to_type $object_type, $subtype, ...	477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
164		479
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	480	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	481	on_skill_attack => sub {
167	type.	482	my ($self, $victim) = @_;
		483	...
		484	}
		485	}
168		486
169	=item cf::attach_to_objects ...	487	=item $attachable->valid
170		488
171	Attach handlers to all objects. Do not use this except for debugging or	489	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	490	C-level object still exists. If you try to access an object that has no
173	the game.	491	valid C counterpart anymore you get an exception at runtime. This method
174		492	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	493	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		494
193	=cut	495	=cut
194		496
195	# the following variables are defined in .xs and must not be re-created	497	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	498	our @CB_GLOBAL = (); # registry for all global events
		499	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	504	our @CB_MAP = ();
201		505
202	my %attachment;	506	my %attachment;
203		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
204	sub _attach_cb($\%$$$) {	514	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	515	my ($registry, $event, $prio, $cb) = @_;
206		516
207	use sort 'stable';	517	use sort 'stable';
208		518
209	$cb = [$prio, $cb];	519	$cb = [$prio, $cb];
210		520
211	@{$registry->[$event]} = sort	521	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	522	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	523	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	524	}
		525
		526	# hack
		527	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		528
218	# attach handles attaching event callbacks	529	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	530	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	531	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	532	sub _attach {
222	my ($registry, $klass, @arg) = @_;	533	my ($registry, $klass, @arg) = @_;
223		534
		535	my $object_type;
224	my $prio = 0;	536	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	537	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		538
		539	#TODO: get rid of this hack
		540	if ($attachable_klass{$klass}) {
		541	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		542	}
232		543
233	while (@arg) {	544	while (@arg) {
234	my $type = shift @arg;	545	my $type = shift @arg;
235		546
236	if ($type eq "prio") {	547	if ($type eq "prio") {
237	$prio = shift @arg;	548	$prio = shift @arg;
238		549
		550	} elsif ($type eq "type") {
		551	$object_type = shift @arg;
		552	$registry = $CB_TYPE[$object_type] ||= [];
		553
		554	} elsif ($type eq "subtype") {
		555	defined $object_type or Carp::croak "subtype specified without type";
		556	my $object_subtype = shift @arg;
		557	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		558
239	} elsif ($type eq "package") {	559	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	560	my $pkg = shift @arg;
241		561
242	while (my ($name, $id) = each %cb_id) {	562	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	563	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	564	_attach_cb $registry, $id, $prio, $cb;
245	}	565	}
246	}	566	}
247		567
248	} elsif (exists $cb_id{$type}) {	568	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	569	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		570
251	} elsif (ref $type) {	571	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	572	warn "attaching objects not supported, ignoring.\n";
253		573
254	} else {	574	} else {
255	shift @arg;	575	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	576	warn "attach argument '$type' not supported, ignoring.\n";
257	}	577	}
258	}	578	}
259
260	\%undo
261	}	579	}
262		580
263	sub _attach_attachment {	581	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	582	my ($obj, $name, %arg) = @_;
265		583
266	my $res;	584	return if exists $obj->{_attachment}{$name};
267		585
268	if (my $attach = $attachment{$name}) {	586	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	587	my $registry = $obj->registry;
270		588
271	for (@$attach) {	589	for (@$attach) {
272	my ($klass, @attach) = @$_;	590	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	591	_attach $registry, $klass, @attach;
274	}	592	}
275		593
276	$obj->{$name} = \%arg;	594	$obj->{$name} = \%arg;
277	} else {	595	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	596	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	597	}
280		598
281	$obj->{_attachment}{$name} = undef;	599	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	600	}
286		601
287	*cf::object::attach =	602	sub cf::attachable::attach {
288	*cf::player::attach =	603	if (ref $_[0]) {
289	*cf::map::attach = sub {	604	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	605	} else {
291		606	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	607	}
293	}	608	};
294		609
295	# all those should be optimised	610	# all those should be optimised
296	*cf::object::detach =	611	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	612	my ($obj, $name) = @_;
300		613
		614	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	615	delete $obj->{_attachment}{$name};
302	reattach $obj;	616	reattach ($obj);
		617	} else {
		618	Carp::croak "cannot, currently, detach class attachments";
		619	}
303	};	620	};
304		621
305	sub attach_global {	622	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	623	my ($obj, $name) = @_;
307	}
308		624
309	sub attach_to_type {	625	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	626	}
315		627
316	sub attach_to_objects {	628	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	629	eval "#line " . __LINE__ . " 'cf.pm'
318	}	630	sub cf::\L$klass\E::_attach_registry {
		631	(\\\@CB_$klass, KLASS_$klass)
		632	}
319		633
320	sub attach_to_players {	634	sub cf::\L$klass\E::attachment {
321	_attach @CB_PLAYER, KLASS_PLAYER, @_
322	}
323
324	sub attach_to_maps {
325	_attach @CB_MAP, KLASS_MAP, @_
326	}
327
328	sub register_attachment {
329	my $name = shift;	635	my \$name = shift;
330		636
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	637	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		638	}
		639	";
		640	die if $@;
338	}	641	}
339		642
340	our $override;	643	our $override;
341	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	644	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
342		645
…		…
356	for (@$callbacks) {	659	for (@$callbacks) {
357	eval { &{$_->[1]} };	660	eval { &{$_->[1]} };
358		661
359	if ($@) {	662	if ($@) {
360	warn "$@";	663	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	664	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	665	override;
363	}	666	}
364		667
365	return 1 if $override;	668	return 1 if $override;
366	}	669	}
367		670
368	0	671	0
369	}	672	}
		673
		674	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		675
		676	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		677
		678	Generate an object-specific event with the given arguments.
		679
		680	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		681	removed in future versions), and there is no public API to access override
		682	results (if you must, access C<@cf::invoke_results> directly).
		683
		684	=back
		685
		686	=cut
370		687
371	#############################################################################	688	#############################################################################
372	# object support	689	# object support
373		690
374	sub instantiate {
375	my ($obj, $data) = @_;
376
377	$data = from_json $data;
378
379	for (@$data) {
380	my ($name, $args) = @$_;
381
382	$obj->attach ($name, %{$args || {} });
383	}
384	}
385
386	# basically do the same as instantiate, without calling instantiate
387	sub reattach {	691	sub reattach {
		692	# basically do the same as instantiate, without calling instantiate
388	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
389	my $registry = $obj->registry;	697	my $registry = $obj->registry;
390		698
391	@$registry = ();	699	@$registry = ();
392		700
393	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
394		702
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	703	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	704	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	705	for (@$attach) {
398	my ($klass, @attach) = @$_;	706	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	707	_attach $registry, $klass, @attach;
400	}	708	}
401	} else {	709	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	710	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	711	}
404	}	712	}
405	}	713	}
406		714
407	sub object_freezer_save {	715	cf::attachable->attach (
408	my ($filename, $objs) = @_;
409
410	if (@$objs) {
411	open my $fh, ">:raw", "$filename.pst~";
412	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
413	close $fh;
414	chmod SAVE_MODE, "$filename.pst~";
415	rename "$filename.pst~", "$filename.pst";
416	} else {
417	unlink "$filename.pst";
418	}
419
420	chmod SAVE_MODE, "$filename~";
421	rename "$filename~", $filename;
422	}
423
424	sub object_thawer_load {
425	my ($filename) = @_;
426
427	open my $fh, "<:raw:perlio", "$filename.pst"
428	or return;
429
430	eval { local $/; (Storable::thaw <$fh>)->{objs} }
431	}
432
433	attach_to_objects
434	prio => -1000000,	716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
435	on_clone => sub {	729	on_clone => sub {
436	my ($src, $dst) = @_;	730	my ($src, $dst) = @_;
437		731
438	@{$dst->registry} = @{$src->registry};	732	@{$dst->registry} = @{$src->registry};
439		733
440	%$dst = %$src;	734	%$dst = %$src;
441		735
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	736	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	737	if exists $src->{_attachment};
444	},	738	},
445	;	739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$rdata) {
		746	warn sprintf "saving %s (%d,%d)\n",
		747	$filename, length $$rdata, scalar @$objs;
		748
		749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		750	chmod SAVE_MODE, $fh;
		751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
		753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
		762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
		769	} else {
		770	warn "FATAL: $filename~: $!\n";
		771	}
		772	} else {
		773	aio_unlink $filename;
		774	aio_unlink "$filename.pst";
		775	}
		776	}
		777	}
		778
		779	sub object_freezer_as_string {
		780	my ($rdata, $objs) = @_;
		781
		782	use Data::Dumper;
		783
		784	$$rdata . Dumper $objs
		785	}
		786
		787	sub object_thawer_load {
		788	my ($filename) = @_;
		789
		790	my ($data, $av);
		791
		792	(aio_load $filename, $data) >= 0
		793	or return;
		794
		795	unless (aio_stat "$filename.pst") {
		796	(aio_load "$filename.pst", $av) >= 0
		797	or return;
		798	$av = eval { (Storable::thaw $av)->{objs} };
		799	}
		800
		801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
		803	return ($data, $av);
		804	}
446		805
447	#############################################################################	806	#############################################################################
448	# old plug-in events	807	# command handling &c
449		808
450	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		810
454	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
455	or return;	812	$name.
456		813
457	&$cb	814	=cut
458	}
459
460	sub inject_global_event {
461	my $event = shift;
462
463	my $cb = $hook[$event]
464	or return;
465
466	List::Util::max map &$_, values %$cb
467	}
468
469	sub inject_command {
470	my ($name, $obj, $params) = @_;
471
472	for my $cmd (@{ $command{$name} }) {
473	$cmd->[1]->($obj, $params);
474	}
475
476	-1
477	}
478		815
479	sub register_command {	816	sub register_command {
480	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
481		818
482	my $caller = caller;	819	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
484		821
485	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
488		833
489	sub register_extcmd {	834	sub register_extcmd {
490	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
491		836
492	my $caller = caller;	837	$EXTCMD{$name} = $cb;
493	#warn "registering extcmd '$name' to '$caller'";
494
495	$extcmd{$name} = [$cb, $caller];
496	}	838	}
497		839
498	sub register {	840	cf::player->attach (
499	my ($base, $pkg) = @_;	841	on_command => sub {
		842	my ($pl, $name, $params) = @_;
500		843
501	#TODO	844	my $cb = $COMMAND{$name}
502	}	845	or return;
		846
		847	for my $cmd (@$cb) {
		848	$cmd->[1]->($pl->ob, $params);
		849	}
		850
		851	cf::override;
		852	},
		853	on_extcmd => sub {
		854	my ($pl, $buf) = @_;
		855
		856	my $msg = eval { from_json $buf };
		857
		858	if (ref $msg) {
		859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		860	if (my %reply = $cb->($pl, $msg)) {
		861	$pl->ext_reply ($msg->{msgid}, %reply);
		862	}
		863	}
		864	} else {
		865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		866	}
		867
		868	cf::override;
		869	},
		870	);
503		871
504	sub load_extension {	872	sub load_extension {
505	my ($path) = @_;	873	my ($path) = @_;
506		874
507	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
508	my $base = $1;	876	my $base = $1;
509	my $pkg = $1;	877	my $pkg = $1;
510	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
511	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
512		880
513	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
514		882
515	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
516	or die "$path: $!";	884	or die "$path: $!";
517		885
518	my $source =	886	my $source =
519	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
520	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
522	. "\n};\n1";	890	. "\n};\n1";
523		891
524	eval $source	892	unless (eval $source) {
525	or die "$path: $@";	893	my $msg = $@ ? "$path: $@\n"
526		894	: "extension disabled.\n";
527	push @exts, $pkg;	895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
528	$ext_pkg{$base} = $pkg;	896	warn $@;
529		897	warn "mandatory extension failed to load, exiting.\n";
530	# no strict 'refs';	898	exit 1;
531	# @{"$pkg\::ISA"} = ext::;	899	}
532		900	die $@;
533	register $base, $pkg;
534	}
535
536	sub unload_extension {
537	my ($pkg) = @_;
538
539	warn "removing extension $pkg\n";
540
541	# remove hooks
542	#TODO
543	# for my $idx (0 .. $#PLUGIN_EVENT) {
544	# delete $hook[$idx]{$pkg};
545	# }	901	}
546		902
547	# remove commands	903	push @EXTS, $pkg;
548	for my $name (keys %command) {
549	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
550
551	if (@cb) {
552	$command{$name} = \@cb;
553	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
554	} else {
555	delete $command{$name};
556	delete $COMMAND{"$name\000"};
557	}
558	}
559
560	# remove extcmds
561	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
562	delete $extcmd{$name};
563	}
564
565	if (my $cb = $pkg->can ("unload")) {
566	eval {
567	$cb->($pkg);
568	1
569	} or warn "$pkg unloaded, but with errors: $@";
570	}
571
572	Symbol::delete_package $pkg;
573	}	904	}
574		905
575	sub load_extensions {	906	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	908	next unless -r $ext;
580	eval {	909	eval {
581	load_extension $ext;	910	load_extension $ext;
582	1	911	1
583	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
584	}	913	}
585	}	914	}
586		915
587	sub _perl_reload(&) {	916	#############################################################################
		917
		918	=head2 CORE EXTENSIONS
		919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
588	my ($msg) = @_;	959	my ($login) = @_;
589		960
590	$msg->("reloading...");	961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat $login }
		963	}
591		964
592	eval {	965	sub find($) {
593	# 1. cancel all watchers	966	return $cf::PLAYER{$_[0]} || do {
594	$_->cancel for Event::all_watchers;	967	my $login = $_[0];
595		968
596	# 2. unload all extensions	969	my $guard = cf::lock_acquire "user_find:$login";
597	for (@exts) {
598	$msg->("unloading <$_>");
599	unload_extension $_;
600	}
601		970
602	# 3. unload all modules loaded from $LIBDIR	971	$cf::PLAYER{$_[0]} || do {
603	while (my ($k, $v) = each %INC) {	972	my $pl = load_pl path $login
604	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	973	or return;
605		974	$cf::PLAYER{$login} = $pl
606	$msg->("removing <$k>");
607	delete $INC{$k};
608
609	$k =~ s/\.pm$//;
610	$k =~ s/\//::/g;
611
612	if (my $cb = $k->can ("unload_module")) {
613	$cb->();
614	}
615
616	Symbol::delete_package $k;
617	}
618
619	# 4. get rid of safe::, as good as possible
620	Symbol::delete_package "safe::$_"
621	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
622
623	# 5. remove register_script_function callbacks
624	# TODO
625		975	}
626	# 6. unload cf.pm "a bit"	976	}
627	delete $INC{"cf.pm"};	977	}
628		978
629	# don't, removes xs symbols, too,	979	sub save($) {
630	# and global variables created in xs	980	my ($pl) = @_;
631	#Symbol::delete_package __PACKAGE__;
632		981
633	# 7. reload cf.pm	982	return if $pl->{deny_save};
634	$msg->("reloading cf.pm");	983
635	require cf;	984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string;
		1119
		1120	our $MAX_RESET = 3600;
		1121	our $DEFAULT_RESET = 3000;
		1122
		1123	sub generate_random_map {
		1124	my ($self, $rmp) = @_;
		1125
		1126	# mit "rum" bekleckern, nicht
		1127	$self->_create_random_map (
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region}), $rmp->{custom}
		1139	)
		1140	}
		1141
		1142	sub register {
		1143	my (undef, $regex) = @_;
		1144	my $pkg = caller;
		1145
		1146	no strict;
		1147	push @{"$pkg\::ISA"}, __PACKAGE__;
		1148
		1149	$EXT_MAP{$pkg} = qr<$regex>;
		1150	}
		1151
		1152	# also paths starting with '/'
		1153	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1154
		1155	sub thawer_merge {
		1156	# we have to keep some variables in memory intact
		1157	local $_[0]{path};
		1158	local $_[0]{deny_save};
		1159	local $_[0]{deny_reset};
		1160
		1161	$_[0]->SUPER::thawer_merge ($_[1]);
		1162	}
		1163
		1164	sub normalise {
		1165	my ($path, $base) = @_;
		1166
		1167	# map plan:
		1168	#
		1169	# /! non-realised random map exit (special hack!)
		1170	# {... are special paths that are not being touched
		1171	# ?xxx/... are special absolute paths
		1172	# ?random/... random maps
		1173	# /... normal maps
		1174	# ~user/... per-player map of a specific user
		1175
		1176	$path =~ s/$PATH_SEP/\//go;
		1177
		1178	# treat it as relative path if it starts with
		1179	# something that looks reasonable
		1180	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1181	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1182
		1183	$base =~ s{[^/]+/?$}{};
		1184	$path = "$base/$path";
		1185	}
		1186
		1187	for ($path) {
		1188	redo if s{//}{/};
		1189	redo if s{/\.?/}{/};
		1190	redo if s{/[^/]+/\.\./}{/};
		1191	}
		1192
		1193	$path
		1194	}
		1195
		1196	sub new_from_path {
		1197	my (undef, $path, $base) = @_;
		1198
		1199	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1200
		1201	$path = normalise $path, $base;
		1202
		1203	for my $pkg (keys %EXT_MAP) {
		1204	if ($path =~ $EXT_MAP{$pkg}) {
		1205	my $self = bless cf::map::new, $pkg;
		1206	$self->{path} = $path; $self->path ($path);
		1207	$self->init; # pass $1 etc.
		1208	return $self;
		1209	}
		1210	}
		1211
		1212	Carp::carp "unable to resolve path '$path'.";
		1213	()
		1214	}
		1215
		1216	sub init {
		1217	my ($self) = @_;
		1218
		1219	$self
		1220	}
		1221
		1222	sub as_string {
		1223	my ($self) = @_;
		1224
		1225	"$self->{path}"
		1226	}
		1227
		1228	# the displayed name, this is a one way mapping
		1229	sub visible_name {
		1230	&as_string
		1231	}
		1232
		1233	# the original (read-only) location
		1234	sub load_path {
		1235	my ($self) = @_;
		1236
		1237	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1238	}
		1239
		1240	# the temporary/swap location
		1241	sub save_path {
		1242	my ($self) = @_;
		1243
		1244	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1245	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1246	}
		1247
		1248	# the unique path, undef == no special unique path
		1249	sub uniq_path {
		1250	my ($self) = @_;
		1251
		1252	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1253	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1254	}
		1255
		1256	# and all this just because we cannot iterate over
		1257	# all maps in C++...
		1258	sub change_all_map_light {
		1259	my ($change) = @_;
		1260
		1261	$_->change_map_light ($change)
		1262	for grep $_->outdoor, values %cf::MAP;
		1263	}
		1264
		1265	sub unlink_save {
		1266	my ($self) = @_;
		1267
		1268	utf8::encode (my $save = $self->save_path);
		1269	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1270	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1271	}
		1272
		1273	sub load_header_from($) {
		1274	my ($self, $path) = @_;
		1275
		1276	utf8::encode $path;
		1277	aio_open $path, O_RDONLY, 0
		1278	or return;
		1279
		1280	$self->_load_header ($path)
		1281	or return;
		1282
		1283	$self->{load_path} = $path;
		1284
		1285	1
		1286	}
		1287
		1288	sub load_orig {
		1289	my ($self) = @_;
		1290
		1291	$self->load_header_from ($self->load_path)
		1292	}
		1293
		1294	sub load_temp {
		1295	my ($self) = @_;
		1296
		1297	$self->load_header_from ($self->save_path)
		1298	}
		1299
		1300	sub load_header {
		1301	my ($self) = @_;
		1302
		1303	if ($self->load_temp) {
		1304	$self->last_access ((delete $self->{last_access})
		1305	|| $cf::RUNTIME); #d#
		1306	# safety
		1307	$self->{instantiate_time} = $cf::RUNTIME
		1308	if $self->{instantiate_time} > $cf::RUNTIME;
		1309	} else {
		1310	$self->load_orig
		1311	or return;
		1312
		1313	$self->{load_original} = 1;
		1314	$self->{instantiate_time} = $cf::RUNTIME;
		1315	$self->last_access ($cf::RUNTIME);
		1316	$self->instantiate;
		1317	}
		1318
		1319	1
		1320	}
		1321
		1322	sub find;
		1323	sub find {
		1324	my ($path, $origin) = @_;
		1325
		1326	$path = normalise $path, $origin && $origin->path;
		1327
		1328	cf::lock_wait "map_find:$path";
		1329
		1330	$cf::MAP{$path} || do {
		1331	my $guard = cf::lock_acquire "map_find:$path";
		1332	my $map = new_from_path cf::map $path
		1333	or return;
		1334
		1335	$map->{last_save} = $cf::RUNTIME;
		1336
		1337	$map->load_header
		1338	or return;
		1339
		1340	if ($map->should_reset) {
		1341	$cf::WAIT_FOR_TICK->wait;
		1342	$map->reset;
		1343	undef $guard;
		1344	$map = find $path
		1345	or return;
		1346	}
		1347
		1348	$cf::MAP{$path} = $map
		1349	}
		1350	}
		1351
		1352	sub load {
		1353	my ($self) = @_;
		1354
		1355	my $path = $self->{path};
		1356	my $guard = cf::lock_acquire "map_load:$path";
		1357
		1358	return if $self->in_memory != cf::MAP_SWAPPED;
		1359
		1360	$self->in_memory (cf::MAP_LOADING);
		1361
		1362	$self->alloc;
		1363	$self->_load_objects ($self->{load_path}, 1)
		1364	or return;
		1365
		1366	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1367	if delete $self->{load_original};
		1368
		1369	if (my $uniq = $self->uniq_path) {
		1370	utf8::encode $uniq;
		1371	if (aio_open $uniq, O_RDONLY, 0) {
		1372	$self->clear_unique_items;
		1373	$self->_load_objects ($uniq, 0);
		1374	}
		1375	}
		1376
		1377	Coro::cede;
		1378
		1379	# now do the right thing for maps
		1380	$self->link_multipart_objects;
		1381
		1382	unless ($self->{deny_activate}) {
		1383	$self->decay_objects;
		1384	$self->fix_auto_apply;
		1385	$self->update_buttons;
		1386	Coro::cede;
		1387	$self->set_darkness_map;
		1388	$self->difficulty ($self->estimate_difficulty)
		1389	unless $self->difficulty;
		1390	Coro::cede;
		1391	$self->activate;
		1392	}
		1393
		1394	$self->in_memory (cf::MAP_IN_MEMORY);
		1395	}
		1396
		1397	sub customise_for {
		1398	my ($self, $ob) = @_;
		1399
		1400	return find "~" . $ob->name . "/" . $self->{path}
		1401	if $self->per_player;
		1402
		1403	$self
		1404	}
		1405
		1406	# find and load all maps in the 3x3 area around a map
		1407	sub load_diag {
		1408	my ($map) = @_;
		1409
		1410	my @diag; # diagonal neighbours
		1411
		1412	for (0 .. 3) {
		1413	my $neigh = $map->tile_path ($_)
		1414	or next;
		1415	$neigh = find $neigh, $map
		1416	or next;
		1417	$neigh->load;
		1418
		1419	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1420	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1421	}
		1422
		1423	for (@diag) {
		1424	my $neigh = find @$_
		1425	or next;
		1426	$neigh->load;
		1427	}
		1428	}
		1429
		1430	sub find_sync {
		1431	my ($path, $origin) = @_;
		1432
		1433	cf::sync_job { find $path, $origin }
		1434	}
		1435
		1436	sub do_load_sync {
		1437	my ($map) = @_;
		1438
		1439	cf::sync_job { $map->load };
		1440	}
		1441
		1442	our %MAP_PREFETCH;
		1443	our $MAP_PREFETCHER = Coro::async {
		1444	while () {
		1445	for my $path (keys %MAP_PREFETCH) {
		1446	my $map = find $path
		1447	or next;
		1448	$map->load;
		1449
		1450	delete $MAP_PREFETCH{$path};
		1451	}
		1452	Coro::schedule;
		1453	}
		1454	};
		1455
		1456	sub find_async {
		1457	my ($path, $origin) = @_;
		1458
		1459	$path = normalise $path, $origin && $origin->{path};
		1460
		1461	if (my $map = $cf::MAP{$path}) {
		1462	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1463	}
		1464
		1465	$MAP_PREFETCH{$path} = 0;
		1466	$MAP_PREFETCHER->ready;
		1467
		1468	()
		1469	}
		1470
		1471	sub save {
		1472	my ($self) = @_;
		1473
		1474	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1475
		1476	$self->{last_save} = $cf::RUNTIME;
		1477
		1478	return unless $self->dirty;
		1479
		1480	my $save = $self->save_path; utf8::encode $save;
		1481	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1482
		1483	$self->{load_path} = $save;
		1484
		1485	return if $self->{deny_save};
		1486
		1487	local $self->{last_access} = $self->last_access;#d#
		1488
		1489	cf::async {
		1490	$_->contr->save for $self->players;
636	};	1491	};
637	$msg->($@) if $@;
638		1492
639	$msg->("reloaded");	1493	if ($uniq) {
640	};	1494	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
641		1495	$self->_save_objects ($uniq, cf::IO_UNIQUES);
642	sub perl_reload() {	1496	} else {
643	_perl_reload {	1497	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
644	warn $_[0];
645	print "$_[0]\n";
646	};	1498	}
647	}	1499	}
648		1500
649	register_command "perl-reload", 0, sub {	1501	sub swap_out {
650	my ($who, $arg) = @_;
651
652	if ($who->flag (FLAG_WIZ)) {
653	_perl_reload {
654	warn $_[0];
655	$who->message ($_[0]);
656	};
657	}
658	};
659
660	#############################################################################
661	# extcmd framework, basically convert ext <msg>
662	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
663
664	attach_to_players
665	on_extcmd => sub {
666	my ($pl, $buf) = @_;	1502	my ($self) = @_;
667		1503
668	my $msg = eval { from_json $buf };	1504	# save first because save cedes
		1505	$self->save;
669		1506
670	if (ref $msg) {	1507	my $lock = cf::lock_acquire "map_data:" . $self->path;
671	if (my $cb = $extcmd{$msg->{msgtype}}) {
672	if (my %reply = $cb->[0]->($pl, $msg)) {
673	$pl->ext_reply ($msg->{msgid}, %reply);
674	}
675	}
676	} else {
677	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
678	}
679		1508
680	cf::override;	1509	return if $self->players;
		1510	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1511	return if $self->{deny_save};
		1512
		1513	$self->clear;
		1514	$self->in_memory (cf::MAP_SWAPPED);
		1515	}
		1516
		1517	sub reset_at {
		1518	my ($self) = @_;
		1519
		1520	# TODO: safety, remove and allow resettable per-player maps
		1521	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1522	return 1e99 if $self->{deny_reset};
		1523
		1524	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1525	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1526
		1527	$time + $to
		1528	}
		1529
		1530	sub should_reset {
		1531	my ($self) = @_;
		1532
		1533	$self->reset_at <= $cf::RUNTIME
		1534	}
		1535
		1536	sub rename {
		1537	my ($self, $new_path) = @_;
		1538
		1539	normalise $new_path;
		1540
		1541	$self->unlink_save;
		1542
		1543	delete $cf::MAP{$self->path};
		1544	$self->{path} = $new_path; $self->path ($self->{path});
		1545	$cf::MAP{$self->path} = $self;
		1546
		1547	$self->save;
		1548	}
		1549
		1550	sub reset {
		1551	my ($self) = @_;
		1552
		1553	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1554
		1555	return if $self->players;
		1556	return if $self->isa ("ext::map_per_player");#d#
		1557
		1558	warn "resetting map ", $self->path;#d#
		1559
		1560	delete $cf::MAP{$self->path};
		1561
		1562	$self->in_memory (cf::MAP_SWAPPED);
		1563	$self->clear;
		1564
		1565	$_->clear_links_to ($self) for values %cf::MAP;
		1566
		1567	$self->unlink_save;
		1568	$self->destroy;
		1569	}
		1570
		1571	my $nuke_counter = "aaaa";
		1572
		1573	sub nuke {
		1574	my ($self) = @_;
		1575
		1576	$self->{deny_save} = 1;
		1577	$self->reset_timeout (1);
		1578	$self->rename ("{nuke}/" . ($nuke_counter++));
		1579	$self->reset; # polite request, might not happen
		1580	}
		1581
		1582	=item cf::map::unique_maps
		1583
		1584	Returns an arrayref of paths of all shared maps that have
		1585	instantiated unique items. May block.
		1586
		1587	=cut
		1588
		1589	sub unique_maps() {
		1590	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1591	or return;
		1592
		1593	my @paths;
		1594
		1595	for (@$files) {
		1596	utf8::decode $_;
		1597	next if /\.pst$/;
		1598	next unless /^$PATH_SEP/o;
		1599
		1600	s/\.map$//;
		1601	push @paths, $_;
681	},	1602	}
682	;
683		1603
684	#############################################################################	1604	\@paths
685	# load/save/clean perl data associated with a map
686
687	*cf::mapsupport::on_clean = sub {
688	my ($map) = @_;
689
690	my $path = $map->tmpname;
691	defined $path or return;
692
693	unlink "$path.pst";
694	};
695
696	# old style persistent data, TODO: remove #d#
697	*cf::mapsupport::on_swapin =
698	*cf::mapsupport::on_load = sub {
699	my ($map) = @_;
700
701	my $path = $map->tmpname;
702	$path = $map->path unless defined $path;
703
704	open my $fh, "<:raw", "$path.cfperl"
705	or return; # no perl data
706
707	my $data = Storable::thaw do { local $/; <$fh> };
708
709	$data->{version} <= 1
710	or return; # too new
711
712	$map->_set_obs ($data->{obs});
713	$map->invoke (EVENT_MAP_UPGRADE);
714	};
715
716	attach_to_maps prio => -10000, package => cf::mapsupport::;
717
718	#############################################################################
719	# load/save perl data associated with player->ob objects
720
721	sub all_objects(@) {
722	@_, map all_objects ($_->inv), @_
723	}	1605	}
724		1606
725	attach_to_players	1607	package cf;
726	on_load => sub {
727	my ($pl, $path) = @_;
728		1608
729	for my $o (all_objects $pl->ob) {	1609	=back
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {
731	$o->set_ob_key_value ("_perl_data");
732		1610
733	%$o = %{ Storable::thaw pack "H*", $value };	1611	=head3 cf::object
734	}
735	}
736	},
737	;
738		1612
739	#############################################################################
740	# core extensions - in perl
741
742	=item cf::player::exists $login
743
744	Returns true when the given account exists.
745
746	=cut	1613	=cut
747		1614
748	sub cf::player::exists($) {	1615	package cf::object;
749	cf::player::find $_[0]
750	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
751	}
752		1616
		1617	=over 4
		1618
		1619	=item $ob->inv_recursive
		1620
		1621	Returns the inventory of the object _and_ their inventories, recursively.
		1622
		1623	=cut
		1624
		1625	sub inv_recursive_;
		1626	sub inv_recursive_ {
		1627	map { $_, inv_recursive_ $_->inv } @_
		1628	}
		1629
		1630	sub inv_recursive {
		1631	inv_recursive_ inv $_[0]
		1632	}
		1633
		1634	package cf;
		1635
		1636	=back
		1637
		1638	=head3 cf::object::player
		1639
		1640	=over 4
		1641
753	=item $player->reply ($npc, $msg[, $flags])	1642	=item $player_object->reply ($npc, $msg[, $flags])
754		1643
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1644	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
756	can be C<undef>. Does the right thing when the player is currently in a	1645	can be C<undef>. Does the right thing when the player is currently in a
757	dialogue with the given NPC character.	1646	dialogue with the given NPC character.
758		1647
759	=cut	1648	=cut
760		1649
761	# rough implementation of a future "reply" method that works	1650	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	1651	# with dialog boxes.
		1652	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	1653	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	1654	my ($self, $npc, $msg, $flags) = @_;
765		1655
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1656	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		1657
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	1661	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	1662	$self->message ($msg, $flags);
773	}	1663	}
774	}	1664	}
775		1665
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	1666	=item $player_object->may ("access")
777		1667
778	Sends an ext reply to the player.	1668	Returns wether the given player is authorized to access resource "access"
		1669	(e.g. "command_wizcast").
779		1670
780	=cut	1671	=cut
781		1672
782	sub cf::player::ext_reply($$$%) {	1673	sub cf::object::player::may {
		1674	my ($self, $access) = @_;
		1675
		1676	$self->flag (cf::FLAG_WIZ) ||
		1677	(ref $cf::CFG{"may_$access"}
		1678	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1679	: $cf::CFG{"may_$access"})
		1680	}
		1681
		1682	=item $player_object->enter_link
		1683
		1684	Freezes the player and moves him/her to a special map (C<{link}>).
		1685
		1686	The player should be reasonably safe there for short amounts of time. You
		1687	I<MUST> call C<leave_link> as soon as possible, though.
		1688
		1689	Will never block.
		1690
		1691	=item $player_object->leave_link ($map, $x, $y)
		1692
		1693	Moves the player out of the special C<{link}> map onto the specified
		1694	map. If the map is not valid (or omitted), the player will be moved back
		1695	to the location he/she was before the call to C<enter_link>, or, if that
		1696	fails, to the emergency map position.
		1697
		1698	Might block.
		1699
		1700	=cut
		1701
		1702	sub link_map {
		1703	unless ($LINK_MAP) {
		1704	$LINK_MAP = cf::map::find "{link}"
		1705	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1706	$LINK_MAP->load;
		1707	}
		1708
		1709	$LINK_MAP
		1710	}
		1711
		1712	sub cf::object::player::enter_link {
		1713	my ($self) = @_;
		1714
		1715	$self->deactivate_recursive;
		1716
		1717	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1718
		1719	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1720	if $self->map;
		1721
		1722	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1723	}
		1724
		1725	sub cf::object::player::leave_link {
		1726	my ($self, $map, $x, $y) = @_;
		1727
		1728	my $link_pos = delete $self->{_link_pos};
		1729
		1730	unless ($map) {
		1731	# restore original map position
		1732	($map, $x, $y) = @{ $link_pos || [] };
		1733	$map = cf::map::find $map;
		1734
		1735	unless ($map) {
		1736	($map, $x, $y) = @$EMERGENCY_POSITION;
		1737	$map = cf::map::find $map
		1738	or die "FATAL: cannot load emergency map\n";
		1739	}
		1740	}
		1741
		1742	($x, $y) = (-1, -1)
		1743	unless (defined $x) && (defined $y);
		1744
		1745	# use -1 or undef as default coordinates, not 0, 0
		1746	($x, $y) = ($map->enter_x, $map->enter_y)
		1747	if $x <=0 && $y <= 0;
		1748
		1749	$map->load;
		1750	$map->load_diag;
		1751
		1752	return unless $self->contr->active;
		1753	$self->activate_recursive;
		1754	$self->enter_map ($map, $x, $y);
		1755	}
		1756
		1757	cf::player->attach (
		1758	on_logout => sub {
		1759	my ($pl) = @_;
		1760
		1761	# abort map switching before logout
		1762	if ($pl->ob->{_link_pos}) {
		1763	cf::sync_job {
		1764	$pl->ob->leave_link
		1765	};
		1766	}
		1767	},
		1768	on_login => sub {
		1769	my ($pl) = @_;
		1770
		1771	# try to abort aborted map switching on player login :)
		1772	# should happen only on crashes
		1773	if ($pl->ob->{_link_pos}) {
		1774	$pl->ob->enter_link;
		1775	(async {
		1776	# we need this sleep as the login has a concurrent enter_exit running
		1777	# and this sleep increases chances of the player not ending up in scorn
		1778	$pl->ob->reply (undef,
		1779	"There was an internal problem at your last logout, "
		1780	. "the server will try to bring you to your intended destination in a second.",
		1781	cf::NDI_RED);
		1782	Coro::Timer::sleep 1;
		1783	$pl->ob->leave_link;
		1784	})->prio (2);
		1785	}
		1786	},
		1787	);
		1788
		1789	=item $player_object->goto ($path, $x, $y)
		1790
		1791	=cut
		1792
		1793	sub cf::object::player::goto {
		1794	my ($self, $path, $x, $y) = @_;
		1795
		1796	$self->enter_link;
		1797
		1798	(async {
		1799	my $map = cf::map::find $path;
		1800	$map = $map->customise_for ($self) if $map;
		1801
		1802	# warn "entering ", $map->path, " at ($x, $y)\n"
		1803	# if $map;
		1804
		1805	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1806
		1807	$self->leave_link ($map, $x, $y);
		1808	})->prio (1);
		1809	}
		1810
		1811	=item $player_object->enter_exit ($exit_object)
		1812
		1813	=cut
		1814
		1815	sub parse_random_map_params {
		1816	my ($spec) = @_;
		1817
		1818	my $rmp = { # defaults
		1819	xsize => 10,
		1820	ysize => 10,
		1821	};
		1822
		1823	for (split /\n/, $spec) {
		1824	my ($k, $v) = split /\s+/, $_, 2;
		1825
		1826	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1827	}
		1828
		1829	$rmp
		1830	}
		1831
		1832	sub prepare_random_map {
		1833	my ($exit) = @_;
		1834
		1835	# all this does is basically replace the /! path by
		1836	# a new random map path (?random/...) with a seed
		1837	# that depends on the exit object
		1838
		1839	my $rmp = parse_random_map_params $exit->msg;
		1840
		1841	if ($exit->map) {
		1842	$rmp->{region} = $exit->map->region_name;
		1843	$rmp->{origin_map} = $exit->map->path;
		1844	$rmp->{origin_x} = $exit->x;
		1845	$rmp->{origin_y} = $exit->y;
		1846	}
		1847
		1848	$rmp->{random_seed} ||= $exit->random_seed;
		1849
		1850	my $data = cf::to_json $rmp;
		1851	my $md5 = Digest::MD5::md5_hex $data;
		1852
		1853	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1854	aio_write $fh, 0, (length $data), $data, 0;
		1855
		1856	$exit->slaying ("?random/$md5");
		1857	$exit->msg (undef);
		1858	}
		1859	}
		1860
		1861	sub cf::object::player::enter_exit {
783	my ($self, $id, %msg) = @_;	1862	my ($self, $exit) = @_;
784		1863
785	$msg{msgid} = $id;	1864	return unless $self->type == cf::PLAYER;
786		1865
787	$self->send ("ext " . to_json \%msg);	1866	$self->enter_link;
788	}
789		1867
790	#############################################################################	1868	(async {
791	# map scripting support	1869	$self->deactivate_recursive; # just to be sure
		1870	unless (eval {
		1871	prepare_random_map $exit
		1872	if $exit->slaying eq "/!";
		1873
		1874	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1875	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1876
		1877	1;
		1878	}) {
		1879	$self->message ("Something went wrong deep within the crossfire server. "
		1880	. "I'll try to bring you back to the map you were before. "
		1881	. "Please report this to the dungeon master!",
		1882	cf::NDI_UNIQUE | cf::NDI_RED);
		1883
		1884	warn "ERROR in enter_exit: $@";
		1885	$self->leave_link;
		1886	}
		1887	})->prio (1);
		1888	}
		1889
		1890	=head3 cf::client
		1891
		1892	=over 4
		1893
		1894	=item $client->send_drawinfo ($text, $flags)
		1895
		1896	Sends a drawinfo packet to the client. Circumvents output buffering so
		1897	should not be used under normal circumstances.
		1898
		1899	=cut
		1900
		1901	sub cf::client::send_drawinfo {
		1902	my ($self, $text, $flags) = @_;
		1903
		1904	utf8::encode $text;
		1905	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1906	}
		1907
		1908
		1909	=item $success = $client->query ($flags, "text", \&cb)
		1910
		1911	Queues a query to the client, calling the given callback with
		1912	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1913	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1914
		1915	Queries can fail, so check the return code. Or don't, as queries will become
		1916	reliable at some point in the future.
		1917
		1918	=cut
		1919
		1920	sub cf::client::query {
		1921	my ($self, $flags, $text, $cb) = @_;
		1922
		1923	return unless $self->state == ST_PLAYING
		1924	|| $self->state == ST_SETUP
		1925	|| $self->state == ST_CUSTOM;
		1926
		1927	$self->state (ST_CUSTOM);
		1928
		1929	utf8::encode $text;
		1930	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1931
		1932	$self->send_packet ($self->{query_queue}[0][0])
		1933	if @{ $self->{query_queue} } == 1;
		1934	}
		1935
		1936	cf::client->attach (
		1937	on_reply => sub {
		1938	my ($ns, $msg) = @_;
		1939
		1940	# this weird shuffling is so that direct followup queries
		1941	# get handled first
		1942	my $queue = delete $ns->{query_queue}
		1943	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1944
		1945	(shift @$queue)->[1]->($msg);
		1946
		1947	push @{ $ns->{query_queue} }, @$queue;
		1948
		1949	if (@{ $ns->{query_queue} } == @$queue) {
		1950	if (@$queue) {
		1951	$ns->send_packet ($ns->{query_queue}[0][0]);
		1952	} else {
		1953	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1954	}
		1955	}
		1956	},
		1957	);
		1958
		1959	=item $client->async (\&cb)
		1960
		1961	Create a new coroutine, running the specified callback. The coroutine will
		1962	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1963	or loss of connection).
		1964
		1965	=cut
		1966
		1967	sub cf::client::async {
		1968	my ($self, $cb) = @_;
		1969
		1970	my $coro = &Coro::async ($cb);
		1971
		1972	$coro->on_destroy (sub {
		1973	delete $self->{_coro}{$coro+0};
		1974	});
		1975
		1976	$self->{_coro}{$coro+0} = $coro;
		1977
		1978	$coro
		1979	}
		1980
		1981	cf::client->attach (
		1982	on_destroy => sub {
		1983	my ($ns) = @_;
		1984
		1985	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1986	},
		1987	);
		1988
		1989	=back
		1990
		1991
		1992	=head2 SAFE SCRIPTING
		1993
		1994	Functions that provide a safe environment to compile and execute
		1995	snippets of perl code without them endangering the safety of the server
		1996	itself. Looping constructs, I/O operators and other built-in functionality
		1997	is not available in the safe scripting environment, and the number of
		1998	functions and methods that can be called is greatly reduced.
		1999
		2000	=cut
792		2001
793	our $safe = new Safe "safe";	2002	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	2003	our $safe_hole = new Safe::Hole;
795		2004
796	$SIG{FPE} = 'IGNORE';	2005	$SIG{FPE} = 'IGNORE';
797		2006
798	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2007	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
799		2008
800	# here we export the classes and methods available to script code	2009	# here we export the classes and methods available to script code
801		2010
		2011	=pod
		2012
		2013	The following fucntions and emthods are available within a safe environment:
		2014
		2015	cf::object contr pay_amount pay_player map
		2016	cf::object::player player
		2017	cf::player peaceful
		2018	cf::map trigger
		2019
		2020	=cut
		2021
802	for (	2022	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	2023	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	2024	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	2025	["cf::player" => qw(peaceful)],
		2026	["cf::map" => qw(trigger)],
806	) {	2027	) {
807	no strict 'refs';	2028	no strict 'refs';
808	my ($pkg, @funs) = @$_;	2029	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2030	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	2031	for @funs;
811	}	2032	}
		2033
		2034	=over 4
		2035
		2036	=item @retval = safe_eval $code, [var => value, ...]
		2037
		2038	Compiled and executes the given perl code snippet. additional var/value
		2039	pairs result in temporary local (my) scalar variables of the given name
		2040	that are available in the code snippet. Example:
		2041
		2042	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2043
		2044	=cut
812		2045
813	sub safe_eval($;@) {	2046	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	2047	my ($code, %vars) = @_;
815		2048
816	my $qcode = $code;	2049	my $qcode = $code;
…		…
839	}	2072	}
840		2073
841	wantarray ? @res : $res[0]	2074	wantarray ? @res : $res[0]
842	}	2075	}
843		2076
		2077	=item cf::register_script_function $function => $cb
		2078
		2079	Register a function that can be called from within map/npc scripts. The
		2080	function should be reasonably secure and should be put into a package name
		2081	like the extension.
		2082
		2083	Example: register a function that gets called whenever a map script calls
		2084	C<rent::overview>, as used by the C<rent> extension.
		2085
		2086	cf::register_script_function "rent::overview" => sub {
		2087	...
		2088	};
		2089
		2090	=cut
		2091
844	sub register_script_function {	2092	sub register_script_function {
845	my ($fun, $cb) = @_;	2093	my ($fun, $cb) = @_;
846		2094
847	no strict 'refs';	2095	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2096	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	2097	}
850		2098
		2099	=back
		2100
		2101	=cut
		2102
		2103	#############################################################################
		2104
		2105	=head2 EXTENSION DATABASE SUPPORT
		2106
		2107	Crossfire maintains a very simple database for extension use. It can
		2108	currently store anything that can be serialised using Storable, which
		2109	excludes objects.
		2110
		2111	The parameter C<$family> should best start with the name of the extension
		2112	using it, it should be unique.
		2113
		2114	=over 4
		2115
		2116	=item $hashref = cf::db_get $family
		2117
		2118	Return a hashref for use by the extension C<$family>, which can be
		2119	modified. After modifications, you have to call C<cf::db_dirty> or
		2120	C<cf::db_sync>.
		2121
		2122	=item $value = cf::db_get $family => $key
		2123
		2124	Returns a single value from the database
		2125
		2126	=item cf::db_put $family => $hashref
		2127
		2128	Stores the given family hashref into the database. Updates are delayed, if
		2129	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2130
		2131	=item cf::db_put $family => $key => $value
		2132
		2133	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2134	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2135
		2136	=item cf::db_dirty
		2137
		2138	Marks the database as dirty, to be updated at a later time.
		2139
		2140	=item cf::db_sync
		2141
		2142	Immediately write the database to disk I<if it is dirty>.
		2143
		2144	=cut
		2145
		2146	our $DB;
		2147
		2148	{
		2149	my $path = cf::localdir . "/database.pst";
		2150
		2151	sub db_load() {
		2152	$DB = stat $path ? Storable::retrieve $path : { };
		2153	}
		2154
		2155	my $pid;
		2156
		2157	sub db_save() {
		2158	waitpid $pid, 0 if $pid;
		2159	if (0 == ($pid = fork)) {
		2160	$DB->{_meta}{version} = 1;
		2161	Storable::nstore $DB, "$path~";
		2162	rename "$path~", $path;
		2163	cf::_exit 0 if defined $pid;
		2164	}
		2165	}
		2166
		2167	my $dirty;
		2168
		2169	sub db_sync() {
		2170	db_save if $dirty;
		2171	undef $dirty;
		2172	}
		2173
		2174	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2175	db_sync;
		2176	});
		2177
		2178	sub db_dirty() {
		2179	$dirty = 1;
		2180	$idle->start;
		2181	}
		2182
		2183	sub db_get($;$) {
		2184	@_ >= 2
		2185	? $DB->{$_[0]}{$_[1]}
		2186	: ($DB->{$_[0]} ||= { })
		2187	}
		2188
		2189	sub db_put($$;$) {
		2190	if (@_ >= 3) {
		2191	$DB->{$_[0]}{$_[1]} = $_[2];
		2192	} else {
		2193	$DB->{$_[0]} = $_[1];
		2194	}
		2195	db_dirty;
		2196	}
		2197
		2198	cf::global->attach (
		2199	prio => 10000,
		2200	on_cleanup => sub {
		2201	db_sync;
		2202	},
		2203	);
		2204	}
		2205
851	#############################################################################	2206	#############################################################################
852	# the server's main()	2207	# the server's main()
853		2208
		2209	sub cfg_load {
		2210	open my $fh, "<:utf8", cf::confdir . "/config"
		2211	or return;
		2212
		2213	local $/;
		2214	*CFG = YAML::Syck::Load <$fh>;
		2215
		2216	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2217
		2218	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2219	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2220
		2221	if (exists $CFG{mlockall}) {
		2222	eval {
		2223	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2224	and die "WARNING: m(un)lockall failed: $!\n";
		2225	};
		2226	warn $@ if $@;
		2227	}
		2228	}
		2229
854	sub main {	2230	sub main {
		2231	# we must not ever block the main coroutine
		2232	local $Coro::idle = sub {
		2233	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2234	async { Event::one_event };
		2235	};
		2236
		2237	cfg_load;
		2238	db_load;
		2239	load_extensions;
855	Event::loop;	2240	Event::loop;
856	}	2241	}
857		2242
858	#############################################################################	2243	#############################################################################
859	# initialisation	2244	# initialisation and cleanup
860		2245
861	register "<global>", __PACKAGE__;	2246	# install some emergency cleanup handlers
		2247	BEGIN {
		2248	for my $signal (qw(INT HUP TERM)) {
		2249	Event->signal (
		2250	data => WF_AUTOCANCEL,
		2251	signal => $signal,
		2252	cb => sub {
		2253	cf::cleanup "SIG$signal";
		2254	},
		2255	);
		2256	}
		2257	}
		2258
		2259	sub emergency_save() {
		2260	my $freeze_guard = cf::freeze_mainloop;
		2261
		2262	warn "enter emergency perl save\n";
		2263
		2264	cf::sync_job {
		2265	# use a peculiar iteration method to avoid tripping on perl
		2266	# refcount bugs in for. also avoids problems with players
		2267	# and maps saved/destroyed asynchronously.
		2268	warn "begin emergency player save\n";
		2269	for my $login (keys %cf::PLAYER) {
		2270	my $pl = $cf::PLAYER{$login} or next;
		2271	$pl->valid or next;
		2272	$pl->save;
		2273	}
		2274	warn "end emergency player save\n";
		2275
		2276	warn "begin emergency map save\n";
		2277	for my $path (keys %cf::MAP) {
		2278	my $map = $cf::MAP{$path} or next;
		2279	$map->valid or next;
		2280	$map->save;
		2281	}
		2282	warn "end emergency map save\n";
		2283	};
		2284
		2285	warn "leave emergency perl save\n";
		2286	}
		2287
		2288	sub reload() {
		2289	# can/must only be called in main
		2290	if ($Coro::current != $Coro::main) {
		2291	warn "can only reload from main coroutine\n";
		2292	return;
		2293	}
		2294
		2295	warn "reloading...";
		2296
		2297	warn "freezing server";
		2298	my $guard = freeze_mainloop;
		2299	cf::emergency_save;
		2300
		2301	warn "sync database to disk";
		2302	cf::db_sync;
		2303	IO::AIO::flush;
		2304
		2305	eval {
		2306	# if anything goes wrong in here, we should simply crash as we already saved
		2307
		2308	warn "cancel all watchers";
		2309	for (Event::all_watchers) {
		2310	$_->cancel if $_->data & WF_AUTOCANCEL;
		2311	}
		2312
		2313	warn "cancel all extension coros";
		2314	$_->cancel for values %EXT_CORO;
		2315	%EXT_CORO = ();
		2316
		2317	warn "remove commands";
		2318	%COMMAND = ();
		2319
		2320	warn "remove ext commands";
		2321	%EXTCMD = ();
		2322
		2323	warn "unload/nuke all extensions";
		2324	for my $pkg (@EXTS) {
		2325	warn "... unloading $pkg";
		2326
		2327	if (my $cb = $pkg->can ("unload")) {
		2328	eval {
		2329	$cb->($pkg);
		2330	1
		2331	} or warn "$pkg unloaded, but with errors: $@";
		2332	}
		2333
		2334	warn "... nuking $pkg";
		2335	Symbol::delete_package $pkg;
		2336	}
		2337
		2338	warn "unload all perl modules loaded from $LIBDIR";
		2339	while (my ($k, $v) = each %INC) {
		2340	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2341
		2342	warn "removing <$k>";
		2343	delete $INC{$k};
		2344
		2345	$k =~ s/\.pm$//;
		2346	$k =~ s/\//::/g;
		2347
		2348	if (my $cb = $k->can ("unload_module")) {
		2349	$cb->();
		2350	}
		2351
		2352	Symbol::delete_package $k;
		2353	}
		2354
		2355	warn "get rid of safe::, as good as possible";
		2356	Symbol::delete_package "safe::$_"
		2357	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2358
		2359	warn "unload cf.pm \"a bit\"";
		2360	delete $INC{"cf.pm"};
		2361
		2362	# don't, removes xs symbols, too,
		2363	# and global variables created in xs
		2364	#Symbol::delete_package __PACKAGE__;
		2365
		2366	warn "reloading cf.pm";
		2367	require cf;
		2368	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2369
		2370	warn "load config and database again";
		2371	cf::cfg_load;
		2372	cf::db_load;
		2373
		2374	warn "load extensions";
		2375	cf::load_extensions;
		2376
		2377	warn "reattach attachments to objects/players";
		2378	_global_reattach;
		2379	warn "reattach attachments to maps";
		2380	reattach $_ for values %MAP;
		2381	};
		2382
		2383	if ($@) {
		2384	warn $@;
		2385	warn "error while reloading, exiting.";
		2386	exit 1;
		2387	}
		2388
		2389	warn "reloaded";
		2390	};
		2391
		2392	register_command "reload" => sub {
		2393	my ($who, $arg) = @_;
		2394
		2395	if ($who->flag (FLAG_WIZ)) {
		2396	$who->message ("start of reload.");
		2397	reload;
		2398	$who->message ("end of reload.");
		2399	}
		2400	};
862		2401
863	unshift @INC, $LIBDIR;	2402	unshift @INC, $LIBDIR;
864		2403
865	load_extensions;
866
867	$TICK_WATCHER = Event->timer (	2404	$TICK_WATCHER = Event->timer (
		2405	reentrant => 0,
868	prio => 1,	2406	prio => 0,
869	at => $NEXT_TICK || 1,	2407	at => $NEXT_TICK || $TICK,
		2408	data => WF_AUTOCANCEL,
870	cb => sub {	2409	cb => sub {
		2410	$NOW = Event::time;
		2411
871	cf::server_tick; # one server iteration	2412	cf::server_tick; # one server iteration
872		2413	$RUNTIME += $TICK;
873	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	2414	$NEXT_TICK += $TICK;
875		2415
		2416	$WAIT_FOR_TICK->broadcast;
		2417	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2418
876	# if we are delayed by four ticks, skip them all	2419	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2420	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
878		2421
879	$TICK_WATCHER->at ($NEXT_TICK);	2422	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	2423	$TICK_WATCHER->start;
881	},	2424	},
882	);	2425	);
883		2426
884	_reload_2;	2427	IO::AIO::max_poll_time $TICK * 0.2;
		2428
		2429	$AIO_POLL_WATCHER = Event->io (
		2430	fd => IO::AIO::poll_fileno,
		2431	poll => 'r',
		2432	prio => 5,
		2433	data => WF_AUTOCANCEL,
		2434	cb => \&IO::AIO::poll_cb,
		2435	);
		2436
		2437	$WRITE_RUNTIME_WATCHER = Event->timer (
		2438	data => WF_AUTOCANCEL,
		2439	after => 0,
		2440	interval => 10,
		2441	cb => sub {
		2442	(Coro::unblock_sub {
		2443	write_runtime
		2444	or warn "ERROR: unable to write runtime file: $!";
		2445	})->();
		2446	},
		2447	);
		2448
		2449	END { cf::emergency_save }
885		2450
886	1	2451	1
887		2452

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