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Comparing cf.schmorp.de/server/lib/cf.pm (file contents):
Revision 1.54 by root, Tue Aug 29 14:49:28 2006 UTC vs.
Revision 1.167 by root, Sat Jan 13 23:32:43 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;
26	our $NEXT_TICK;	49	our $NEXT_TICK;
		50	our $NOW;
		51
		52	our %CFG;
		53
		54	our $UPTIME; $UPTIME ||= time;
		55	our $RUNTIME;
		56
		57	our %PLAYER; # all users
		58	our %MAP; # all maps
		59	our $LINK_MAP; # the special {link} map, which is always available
		60	our $RANDOM_MAPS = cf::localdir . "/random";
		61
		62	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		63	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		64
		65	# used to convert map paths into valid unix filenames by replacing / by ∕
		66	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		67
		68	binmode STDOUT;
		69	binmode STDERR;
		70
		71	# read virtual server time, if available
		72	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		73	open my $fh, "<", cf::localdir . "/runtime"
		74	or die "unable to read runtime file: $!";
		75	$RUNTIME = <$fh> + 0.;
		76	}
		77
		78	mkdir cf::localdir;
		79	mkdir cf::localdir . "/" . cf::playerdir;
		80	mkdir cf::localdir . "/" . cf::tmpdir;
		81	mkdir cf::localdir . "/" . cf::uniquedir;
		82	mkdir $RANDOM_MAPS;
		83
		84	our $EMERGENCY_POSITION;
		85
		86	#############################################################################
		87
		88	=head2 GLOBAL VARIABLES
		89
		90	=over 4
		91
		92	=item $cf::UPTIME
		93
		94	The timestamp of the server start (so not actually an uptime).
		95
		96	=item $cf::RUNTIME
		97
		98	The time this server has run, starts at 0 and is increased by $cf::TICK on
		99	every server tick.
		100
		101	=item $cf::LIBDIR
		102
		103	The perl library directory, where extensions and cf-specific modules can
		104	be found. It will be added to C<@INC> automatically.
		105
		106	=item $cf::NOW
		107
		108	The time of the last (current) server tick.
		109
		110	=item $cf::TICK
		111
		112	The interval between server ticks, in seconds.
		113
		114	=item %cf::CFG
		115
		116	Configuration for the server, loaded from C</etc/crossfire/config>, or
		117	from wherever your confdir points to.
		118
		119	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		120
		121	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		122	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		123	processing has been done. Call C<< ->wait >> on them to maximise the
		124	window of cpu time available, or simply to synchronise to the server tick.
		125
		126	=back
		127
		128	=cut
27		129
28	BEGIN {	130	BEGIN {
29	*CORE::GLOBAL::warn = sub {	131	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	132	my $msg = join "", @_;
		133	utf8::encode $msg;
		134
31	$msg .= "\n"	135	$msg .= "\n"
32	unless $msg =~ /\n$/;	136	unless $msg =~ /\n$/;
33		137
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	138	LOG llevError, $msg;
36	};	139	};
37	}	140	}
38		141
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	142	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		143	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	144	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	145	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	146	@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';	147	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		148
75	# we bless all objects into (empty) derived classes to force a method lookup	149	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	150	# 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)) {	151	for my $pkg (qw(
		152	cf::global cf::attachable
		153	cf::object cf::object::player
		154	cf::client cf::player
		155	cf::arch cf::living
		156	cf::map cf::party cf::region
		157	)) {
78	no strict 'refs';	158	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	159	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	160	}
81		161
82	$Event::DIED = sub {	162	$Event::DIED = sub {
83	warn "error in event callback: @_";	163	warn "error in event callback: @_";
84	};	164	};
85		165
86	my %ext_pkg;	166	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		167
92	#############################################################################	168	=over 4
93	# utility functions	169
		170	=item dumpval $ref
		171
		172	=cut
		173
		174	sub dumpval {
		175	eval {
		176	local $SIG{__DIE__};
		177	my $d;
		178	if (1) {
		179	$d = new Data::Dumper([$_[0]], ["*var"]);
		180	$d->Terse(1);
		181	$d->Indent(2);
		182	$d->Quotekeys(0);
		183	$d->Useqq(1);
		184	#$d->Bless(...);
		185	$d->Seen($_[1]) if @_ > 1;
		186	$d = $d->Dump();
		187	}
		188	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		189	$d
		190	} || "[unable to dump $_[0]: '$@']";
		191	}
94		192
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	193	use JSON::Syck (); # TODO# replace by JSON::PC once working
		194
		195	=item $ref = cf::from_json $json
		196
		197	Converts a JSON string into the corresponding perl data structure.
		198
		199	=cut
96		200
97	sub from_json($) {	201	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	202	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	203	JSON::Syck::Load $_[0]
100	}	204	}
101		205
		206	=item $json = cf::to_json $ref
		207
		208	Converts a perl data structure into its JSON representation.
		209
		210	=cut
		211
102	sub to_json($) {	212	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	213	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	214	JSON::Syck::Dump $_[0]
105	}	215	}
106		216
		217	=item cf::lock_wait $string
		218
		219	Wait until the given lock is available. See cf::lock_acquire.
		220
		221	=item my $lock = cf::lock_acquire $string
		222
		223	Wait until the given lock is available and then acquires it and returns
		224	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		225	for example when the coroutine gets canceled), the lock is automatically
		226	returned.
		227
		228	Lock names should begin with a unique identifier (for example, cf::map::find
		229	uses map_find and cf::map::load uses map_load).
		230
		231	=cut
		232
		233	our %LOCK;
		234
		235	sub lock_wait($) {
		236	my ($key) = @_;
		237
		238	# wait for lock, if any
		239	while ($LOCK{$key}) {
		240	push @{ $LOCK{$key} }, $Coro::current;
		241	Coro::schedule;
		242	}
		243	}
		244
		245	sub lock_acquire($) {
		246	my ($key) = @_;
		247
		248	# wait, to be sure we are not locked
		249	lock_wait $key;
		250
		251	$LOCK{$key} = [];
		252
		253	Coro::guard {
		254	# wake up all waiters, to be on the safe side
		255	$_->ready for @{ delete $LOCK{$key} };
		256	}
		257	}
		258
		259	sub freeze_mainloop {
		260	return unless $TICK_WATCHER->is_active;
		261
		262	my $guard = Coro::guard { $TICK_WATCHER->start };
		263	$TICK_WATCHER->stop;
		264	$guard
		265	}
		266
		267	=item cf::async { BLOCK }
		268
		269	Currently the same as Coro::async_pool, meaning you cannot use
		270	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		271	thing you are allowed to do is call C<prio> on it.
		272
		273	=cut
		274
		275	BEGIN { *async = \&Coro::async_pool }
		276
		277	=item cf::sync_job { BLOCK }
		278
		279	The design of crossfire+ requires that the main coro ($Coro::main) is
		280	always able to handle events or runnable, as crossfire+ is only partly
		281	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		282
		283	If it must be done, put the blocking parts into C<sync_job>. This will run
		284	the given BLOCK in another coroutine while waiting for the result. The
		285	server will be frozen during this time, so the block should either finish
		286	fast or be very important.
		287
		288	=cut
		289
		290	sub sync_job(&) {
		291	my ($job) = @_;
		292
		293	if ($Coro::current == $Coro::main) {
		294	# this is the main coro, too bad, we have to block
		295	# till the operation succeeds, freezing the server :/
		296
		297	# TODO: use suspend/resume instead
		298	# (but this is cancel-safe)
		299	my $freeze_guard = freeze_mainloop;
		300
		301	my $busy = 1;
		302	my @res;
		303
		304	(async {
		305	@res = eval { $job->() };
		306	warn $@ if $@;
		307	undef $busy;
		308	})->prio (Coro::PRIO_MAX);
		309
		310	while ($busy) {
		311	Coro::cede or Event::one_event;
		312	}
		313
		314	wantarray ? @res : $res[0]
		315	} else {
		316	# we are in another coroutine, how wonderful, everything just works
		317
		318	$job->()
		319	}
		320	}
		321
		322	=item $coro = cf::async_ext { BLOCK }
		323
		324	Like async, but this coro is automatically being canceled when the
		325	extension calling this is being unloaded.
		326
		327	=cut
		328
		329	sub async_ext(&) {
		330	my $cb = shift;
		331
		332	my $coro = &Coro::async ($cb);
		333
		334	$coro->on_destroy (sub {
		335	delete $EXT_CORO{$coro+0};
		336	});
		337	$EXT_CORO{$coro+0} = $coro;
		338
		339	$coro
		340	}
		341
		342	sub write_runtime {
		343	return unless $TICK_WATCHER->is_active;
		344
		345	my $runtime = cf::localdir . "/runtime";
		346
		347	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		348	or return;
		349
		350	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		351	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		352	and return;
		353
		354	aio_fsync $fh
		355	and return;
		356
		357	close $fh
		358	or return;
		359
		360	aio_rename "$runtime~", $runtime
		361	and return;
		362
		363	1
		364	}
		365
		366	=back
		367
		368	=cut
		369
107	#############################################################################	370	#############################################################################
108	# "new" plug-in system
109		371
110	=item $object->attach ($attachment, key => $value...)	372	=head2 ATTACHABLE OBJECTS
111		373
112	=item $object->detach ($attachment)	374	Many objects in crossfire are so-called attachable objects. That means you can
		375	attach callbacks/event handlers (a collection of which is called an "attachment")
		376	to it. All such attachable objects support the following methods.
113		377
114	Attach/detach a pre-registered attachment to an object.	378	In the following description, CLASS can be any of C<global>, C<object>
		379	C<player>, C<client> or C<map> (i.e. the attachable objects in
		380	crossfire+).
115		381
116	=item $player->attach ($attachment, key => $value...)	382	=over 4
117		383
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	384	=item $attachable->attach ($attachment, key => $value...)
123		385
124	=item $map->detach ($attachment)	386	=item $attachable->detach ($attachment)
125		387
126	Attach/detach a pre-registered attachment to a map.	388	Attach/detach a pre-registered attachment to a specific object and give it
		389	the specified key/value pairs as arguments.
127		390
128	=item cf::attach_global ...	391	Example, attach a minesweeper attachment to the given object, making it a
		392	10x10 minesweeper game:
129		393
130	Attach handlers for global events.	394	$obj->attach (minesweeper => width => 10, height => 10);
131		395
132	This and all following C<attach_*>-functions expect any number of the	396	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	397
		398	Checks wether the named attachment is currently attached to the object.
		399
		400	=item cf::CLASS->attach ...
		401
		402	=item cf::CLASS->detach ...
		403
		404	Define an anonymous attachment and attach it to all objects of the given
		405	CLASS. See the next function for an explanation of its arguments.
		406
		407	You can attach to global events by using the C<cf::global> class.
		408
		409	Example, log all player logins:
		410
		411	cf::player->attach (
		412	on_login => sub {
		413	my ($pl) = @_;
		414	...
		415	},
		416	);
		417
		418	Example, attach to the jeweler skill:
		419
		420	cf::object->attach (
		421	type => cf::SKILL,
		422	subtype => cf::SK_JEWELER,
		423	on_use_skill => sub {
		424	my ($sk, $ob, $part, $dir, $msg) = @_;
		425	...
		426	},
		427	);
		428
		429	=item cf::CLASS::attachment $name, ...
		430
		431	Register an attachment by C<$name> through which attachable objects of the
		432	given CLASS can refer to this attachment.
		433
		434	Some classes such as crossfire maps and objects can specify attachments
		435	that are attached at load/instantiate time, thus the need for a name.
		436
		437	These calls expect any number of the following handler/hook descriptions:
134		438
135	=over 4	439	=over 4
136		440
137	=item prio => $number	441	=item prio => $number
138		442
…		…
140	by another C<prio> setting). Lower priority handlers get executed	444	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	445	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	446	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	447	unless you know what you are doing.
144		448
		449	=item type => $type
		450
		451	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		452	given type of objects only (the additional parameter C<subtype> can be
		453	used to further limit to the given subtype).
		454
145	=item on_I<event> => \&cb	455	=item on_I<event> => \&cb
146		456
147	Call the given code reference whenever the named event happens (event is	457	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	458	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	459	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	468	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	469	object/class are recognised.
160		470
161	=back	471	=back
162		472
163	=item cf::attach_to_type $object_type, $subtype, ...	473	Example, define an attachment called "sockpuppet" that calls the given
		474	event handler when a monster attacks:
164		475
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	476	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	477	on_skill_attack => sub {
167	type.	478	my ($self, $victim) = @_;
		479	...
		480	}
		481	}
168		482
169	=item cf::attach_to_objects ...	483	=item $attachable->valid
170		484
171	Attach handlers to all objects. Do not use this except for debugging or	485	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	486	C-level object still exists. If you try to access an object that has no
173	the game.	487	valid C counterpart anymore you get an exception at runtime. This method
174		488	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	489	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 $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		490
193	=cut	491	=cut
194		492
195	# the following variables are defined in .xs and must not be re-created	493	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	494	our @CB_GLOBAL = (); # registry for all global events
		495	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	496	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	497	our @CB_PLAYER = ();
		498	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	499	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	500	our @CB_MAP = ();
201		501
202	my %attachment;	502	my %attachment;
203		503
204	sub _attach_cb($\%$$$) {	504	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	505	my ($registry, $event, $prio, $cb) = @_;
206		506
207	use sort 'stable';	507	use sort 'stable';
208		508
209	$cb = [$prio, $cb];	509	$cb = [$prio, $cb];
210		510
211	@{$registry->[$event]} = sort	511	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	512	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	513	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	514	}
		515
		516	# hack
		517	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		518
218	# attach handles attaching event callbacks	519	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	520	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	521	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	522	sub _attach {
222	my ($registry, $klass, @arg) = @_;	523	my ($registry, $klass, @arg) = @_;
223		524
		525	my $object_type;
224	my $prio = 0;	526	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;	527	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		528
		529	#TODO: get rid of this hack
		530	if ($attachable_klass{$klass}) {
		531	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		532	}
232		533
233	while (@arg) {	534	while (@arg) {
234	my $type = shift @arg;	535	my $type = shift @arg;
235		536
236	if ($type eq "prio") {	537	if ($type eq "prio") {
237	$prio = shift @arg;	538	$prio = shift @arg;
238		539
		540	} elsif ($type eq "type") {
		541	$object_type = shift @arg;
		542	$registry = $CB_TYPE[$object_type] ||= [];
		543
		544	} elsif ($type eq "subtype") {
		545	defined $object_type or Carp::croak "subtype specified without type";
		546	my $object_subtype = shift @arg;
		547	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		548
239	} elsif ($type eq "package") {	549	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	550	my $pkg = shift @arg;
241		551
242	while (my ($name, $id) = each %cb_id) {	552	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	553	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	554	_attach_cb $registry, $id, $prio, $cb;
245	}	555	}
246	}	556	}
247		557
248	} elsif (exists $cb_id{$type}) {	558	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	559	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		560
251	} elsif (ref $type) {	561	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	562	warn "attaching objects not supported, ignoring.\n";
253		563
254	} else {	564	} else {
255	shift @arg;	565	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	566	warn "attach argument '$type' not supported, ignoring.\n";
257	}	567	}
258	}	568	}
259
260	\%undo
261	}	569	}
262		570
263	sub _attach_attachment {	571	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	572	my ($obj, $name, %arg) = @_;
265		573
266	my $res;	574	return if exists $obj->{_attachment}{$name};
267		575
268	if (my $attach = $attachment{$name}) {	576	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	577	my $registry = $obj->registry;
270		578
271	for (@$attach) {	579	for (@$attach) {
272	my ($klass, @attach) = @$_;	580	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	581	_attach $registry, $klass, @attach;
274	}	582	}
275		583
276	$obj->{$name} = \%arg;	584	$obj->{$name} = \%arg;
277	} else {	585	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	586	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	587	}
280		588
281	$obj->{_attachment}{$name} = undef;	589	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	590	}
286		591
287	*cf::object::attach =	592	sub cf::attachable::attach {
288	*cf::player::attach =	593	if (ref $_[0]) {
289	*cf::map::attach = sub {	594	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	595	} else {
291		596	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	597	}
293	}	598	};
294		599
295	# all those should be optimised	600	# all those should be optimised
296	*cf::object::detach =	601	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	602	my ($obj, $name) = @_;
300		603
		604	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	605	delete $obj->{_attachment}{$name};
302	reattach $obj;	606	reattach ($obj);
		607	} else {
		608	Carp::croak "cannot, currently, detach class attachments";
		609	}
303	};	610	};
304		611
305	sub attach_global {	612	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	613	my ($obj, $name) = @_;
307	}
308		614
309	sub attach_to_type {	615	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	616	}
315		617
316	sub attach_to_objects {	618	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	619	eval "#line " . __LINE__ . " 'cf.pm'
318	}	620	sub cf::\L$klass\E::_attach_registry {
		621	(\\\@CB_$klass, KLASS_$klass)
		622	}
319		623
320	sub attach_to_players {	624	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;	625	my \$name = shift;
330		626
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	627	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		628	}
		629	";
		630	die if $@;
338	}	631	}
339		632
340	our $override;	633	our $override;
341	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	634	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
342		635
…		…
356	for (@$callbacks) {	649	for (@$callbacks) {
357	eval { &{$_->[1]} };	650	eval { &{$_->[1]} };
358		651
359	if ($@) {	652	if ($@) {
360	warn "$@";	653	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	654	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	655	override;
363	}	656	}
364		657
365	return 1 if $override;	658	return 1 if $override;
366	}	659	}
367		660
368	0	661	0
369	}	662	}
		663
		664	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		665
		666	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		667
		668	Generate an object-specific event with the given arguments.
		669
		670	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		671	removed in future versions), and there is no public API to access override
		672	results (if you must, access C<@cf::invoke_results> directly).
		673
		674	=back
		675
		676	=cut
370		677
371	#############################################################################	678	#############################################################################
372	# object support	679	# object support
373		680
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 {	681	sub reattach {
		682	# basically do the same as instantiate, without calling instantiate
388	my ($obj) = @_;	683	my ($obj) = @_;
		684
389	my $registry = $obj->registry;	685	my $registry = $obj->registry;
390		686
391	@$registry = ();	687	@$registry = ();
392		688
393	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	689	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
394		690
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	691	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	692	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	693	for (@$attach) {
398	my ($klass, @attach) = @$_;	694	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	695	_attach $registry, $klass, @attach;
400	}	696	}
401	} else {	697	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	698	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	699	}
404	}	700	}
405	}	701	}
406		702
407	sub object_freezer_save {	703	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,	704	prio => -1000000,
		705	on_instantiate => sub {
		706	my ($obj, $data) = @_;
		707
		708	$data = from_json $data;
		709
		710	for (@$data) {
		711	my ($name, $args) = @$_;
		712
		713	$obj->attach ($name, %{$args || {} });
		714	}
		715	},
		716	on_reattach => \&reattach,
435	on_clone => sub {	717	on_clone => sub {
436	my ($src, $dst) = @_;	718	my ($src, $dst) = @_;
437		719
438	@{$dst->registry} = @{$src->registry};	720	@{$dst->registry} = @{$src->registry};
439		721
440	%$dst = %$src;	722	%$dst = %$src;
441		723
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	724	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	725	if exists $src->{_attachment};
444	},	726	},
445	;	727	);
		728
		729	sub object_freezer_save {
		730	my ($filename, $rdata, $objs) = @_;
		731
		732	sync_job {
		733	if (length $$rdata) {
		734	warn sprintf "saving %s (%d,%d)\n",
		735	$filename, length $$rdata, scalar @$objs;
		736
		737	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		738	chmod SAVE_MODE, $fh;
		739	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		740	aio_fsync $fh;
		741	close $fh;
		742
		743	if (@$objs) {
		744	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		745	chmod SAVE_MODE, $fh;
		746	my $data = Storable::nfreeze { version => 1, objs => $objs };
		747	aio_write $fh, 0, (length $data), $data, 0;
		748	aio_fsync $fh;
		749	close $fh;
		750	aio_rename "$filename.pst~", "$filename.pst";
		751	}
		752	} else {
		753	aio_unlink "$filename.pst";
		754	}
		755
		756	aio_rename "$filename~", $filename;
		757	} else {
		758	warn "FATAL: $filename~: $!\n";
		759	}
		760	} else {
		761	aio_unlink $filename;
		762	aio_unlink "$filename.pst";
		763	}
		764	}
		765	}
		766
		767	sub object_freezer_as_string {
		768	my ($rdata, $objs) = @_;
		769
		770	use Data::Dumper;
		771
		772	$$rdata . Dumper $objs
		773	}
		774
		775	sub object_thawer_load {
		776	my ($filename) = @_;
		777
		778	my ($data, $av);
		779
		780	(aio_load $filename, $data) >= 0
		781	or return;
		782
		783	unless (aio_stat "$filename.pst") {
		784	(aio_load "$filename.pst", $av) >= 0
		785	or return;
		786	$av = eval { (Storable::thaw $av)->{objs} };
		787	}
		788
		789	warn sprintf "loading %s (%d)\n",
		790	$filename, length $data, scalar @{$av || []};#d#
		791	return ($data, $av);
		792	}
446		793
447	#############################################################################	794	#############################################################################
448	# old plug-in events	795	# command handling &c
449		796
450	sub inject_event {	797	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		798
454	my $cb = $hook[$event_code]{$extension}	799	Register a callback for execution when the client sends the user command
455	or return;	800	$name.
456		801
457	&$cb	802	=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, $params);
474	}
475
476	-1
477	}
478		803
479	sub register_command {	804	sub register_command {
480	my ($name, $time, $cb) = @_;	805	my ($name, $cb) = @_;
481		806
482	my $caller = caller;	807	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	808	#warn "registering command '$name/$time' to '$caller'";
484		809
485	push @{ $command{$name} }, [$time, $cb, $caller];	810	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	811	}
		812
		813	=item cf::register_extcmd $name => \&callback($pl,$packet);
		814
		815	Register a callbackf ro execution when the client sends an extcmd packet.
		816
		817	If the callback returns something, it is sent back as if reply was being
		818	called.
		819
		820	=cut
488		821
489	sub register_extcmd {	822	sub register_extcmd {
490	my ($name, $cb) = @_;	823	my ($name, $cb) = @_;
491		824
492	my $caller = caller;	825	$EXTCMD{$name} = $cb;
493	#warn "registering extcmd '$name' to '$caller'";
494
495	$extcmd{$name} = [$cb, $caller];
496	}	826	}
497		827
498	sub register {	828	cf::player->attach (
499	my ($base, $pkg) = @_;	829	on_command => sub {
		830	my ($pl, $name, $params) = @_;
500		831
501	#TODO	832	my $cb = $COMMAND{$name}
502	}	833	or return;
		834
		835	for my $cmd (@$cb) {
		836	$cmd->[1]->($pl->ob, $params);
		837	}
		838
		839	cf::override;
		840	},
		841	on_extcmd => sub {
		842	my ($pl, $buf) = @_;
		843
		844	my $msg = eval { from_json $buf };
		845
		846	if (ref $msg) {
		847	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		848	if (my %reply = $cb->($pl, $msg)) {
		849	$pl->ext_reply ($msg->{msgid}, %reply);
		850	}
		851	}
		852	} else {
		853	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		854	}
		855
		856	cf::override;
		857	},
		858	);
503		859
504	sub load_extension {	860	sub load_extension {
505	my ($path) = @_;	861	my ($path) = @_;
506		862
507	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	863	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
508	my $base = $1;	864	my $base = $1;
509	my $pkg = $1;	865	my $pkg = $1;
510	$pkg =~ s/[^[:word:]]/_/g;	866	$pkg =~ s/[^[:word:]]/_/g;
511	$pkg = "ext::$pkg";	867	$pkg = "ext::$pkg";
512		868
513	warn "loading '$path' into '$pkg'\n";	869	warn "... loading '$path' into '$pkg'\n";
514		870
515	open my $fh, "<:utf8", $path	871	open my $fh, "<:utf8", $path
516	or die "$path: $!";	872	or die "$path: $!";
517		873
518	my $source =	874	my $source =
519	"package $pkg; use strict; use utf8;\n"	875	"package $pkg; use strict; use utf8;\n"
520	. "#line 1 \"$path\"\n{\n"	876	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	877	. (do { local $/; <$fh> })
522	. "\n};\n1";	878	. "\n};\n1";
523		879
524	eval $source	880	unless (eval $source) {
525	or die "$path: $@";	881	my $msg = $@ ? "$path: $@\n"
526		882	: "extension disabled.\n";
527	push @exts, $pkg;	883	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
528	$ext_pkg{$base} = $pkg;	884	warn $@;
529		885	warn "mandatory extension failed to load, exiting.\n";
530	# no strict 'refs';	886	exit 1;
531	# @{"$pkg\::ISA"} = ext::;	887	}
532		888	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	# }	889	}
546		890
547	# remove commands	891	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	}	892	}
574		893
575	sub load_extensions {	894	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	895	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	896	next unless -r $ext;
580	eval {	897	eval {
581	load_extension $ext;	898	load_extension $ext;
582	1	899	1
583	} or warn "$ext not loaded: $@";	900	} or warn "$ext not loaded: $@";
584	}	901	}
585	}	902	}
586		903
587	sub _perl_reload(&) {	904	#############################################################################
		905
		906	=head2 CORE EXTENSIONS
		907
		908	Functions and methods that extend core crossfire objects.
		909
		910	=cut
		911
		912	package cf::player;
		913
		914	use Coro::AIO;
		915
		916	=head3 cf::player
		917
		918	=over 4
		919
		920	=item cf::player::find $login
		921
		922	Returns the given player object, loading it if necessary (might block).
		923
		924	=cut
		925
		926	sub playerdir($) {
		927	cf::localdir
		928	. "/"
		929	. cf::playerdir
		930	. "/"
		931	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		932	}
		933
		934	sub path($) {
		935	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		936
		937	(playerdir $login) . "/$login.pl"
		938	}
		939
		940	sub find_active($) {
		941	$cf::PLAYER{$_[0]}
		942	and $cf::PLAYER{$_[0]}->active
		943	and $cf::PLAYER{$_[0]}
		944	}
		945
		946	sub exists($) {
588	my ($msg) = @_;	947	my ($login) = @_;
589		948
590	$msg->("reloading...");	949	$cf::PLAYER{$login}
		950	or cf::sync_job { !aio_stat $login }
		951	}
591		952
592	eval {	953	sub find($) {
593	# 1. cancel all watchers	954	return $cf::PLAYER{$_[0]} || do {
594	$_->cancel for Event::all_watchers;	955	my $login = $_[0];
595		956
596	# 2. unload all extensions	957	my $guard = cf::lock_acquire "user_find:$login";
597	for (@exts) {
598	$msg->("unloading <$_>");
599	unload_extension $_;
600	}
601		958
602	# 3. unload all modules loaded from $LIBDIR	959	$cf::PLAYER{$_[0]} || do {
603	while (my ($k, $v) = each %INC) {	960	my $pl = load_pl path $login
604	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	961	or return;
605		962	$cf::PLAYER{$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		963	}
626	# 6. unload cf.pm "a bit"	964	}
627	delete $INC{"cf.pm"};	965	}
628		966
629	# don't, removes xs symbols, too,	967	sub save($) {
630	# and global variables created in xs	968	my ($pl) = @_;
631	#Symbol::delete_package __PACKAGE__;
632		969
633	# 7. reload cf.pm	970	return if $pl->{deny_save};
634	$msg->("reloading cf.pm");	971
635	require cf;	972	my $path = path $pl;
		973	my $guard = cf::lock_acquire "user_save:$path";
		974
		975	return if $pl->{deny_save};
		976
		977	aio_mkdir playerdir $pl, 0770;
		978	$pl->{last_save} = $cf::RUNTIME;
		979
		980	$pl->save_pl ($path);
		981	Coro::cede;
		982	}
		983
		984	sub new($) {
		985	my ($login) = @_;
		986
		987	my $self = create;
		988
		989	$self->ob->name ($login);
		990	$self->{deny_save} = 1;
		991
		992	$cf::PLAYER{$login} = $self;
		993
		994	$self
		995	}
		996
		997	=item $pl->quit_character
		998
		999	Nukes the player without looking back. If logged in, the connection will
		1000	be destroyed. May block for a long time.
		1001
		1002	=cut
		1003
		1004	sub quit_character {
		1005	my ($pl) = @_;
		1006
		1007	$pl->{deny_save} = 1;
		1008	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1009
		1010	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1011	$pl->deactivate;
		1012	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1013	$pl->ns->destroy if $pl->ns;
		1014
		1015	my $path = playerdir $pl;
		1016	my $temp = "$path~$cf::RUNTIME~deleting~";
		1017	aio_rename $path, $temp;
		1018	delete $cf::PLAYER{$pl->ob->name};
		1019	$pl->destroy;
		1020	IO::AIO::aio_rmtree $temp;
		1021	}
		1022
		1023	=item cf::player::list_logins
		1024
		1025	Returns am arrayref of all valid playernames in the system, can take a
		1026	while and may block, so not sync_job-capable, ever.
		1027
		1028	=cut
		1029
		1030	sub list_logins {
		1031	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1032	or return [];
		1033
		1034	my @logins;
		1035
		1036	for my $login (@$dirs) {
		1037	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1038	aio_read $fh, 0, 512, my $buf, 0 or next;
		1039	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1040
		1041	utf8::decode $login;
		1042	push @logins, $login;
		1043	}
		1044
		1045	\@logins
		1046	}
		1047
		1048	=item $player->maps
		1049
		1050	Returns an arrayref of map paths that are private for this
		1051	player. May block.
		1052
		1053	=cut
		1054
		1055	sub maps($) {
		1056	my ($pl) = @_;
		1057
		1058	my $files = aio_readdir playerdir $pl
		1059	or return;
		1060
		1061	my @paths;
		1062
		1063	for (@$files) {
		1064	utf8::decode $_;
		1065	next if /\.(?:pl|pst)$/;
		1066	next unless /^$PATH_SEP/o;
		1067
		1068	s/\.map$//;
		1069	push @paths, "~" . $pl->ob->name . "/" . $_;
		1070	}
		1071
		1072	\@paths
		1073	}
		1074
		1075	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1076
		1077	Sends an ext reply to the player.
		1078
		1079	=cut
		1080
		1081	sub ext_reply($$$%) {
		1082	my ($self, $id, %msg) = @_;
		1083
		1084	$msg{msgid} = $id;
		1085
		1086	$self->send ("ext " . cf::to_json \%msg);
		1087	}
		1088
		1089	package cf;
		1090
		1091	=back
		1092
		1093
		1094	=head3 cf::map
		1095
		1096	=over 4
		1097
		1098	=cut
		1099
		1100	package cf::map;
		1101
		1102	use Fcntl;
		1103	use Coro::AIO;
		1104
		1105	use overload
		1106	'""' => \&as_string;
		1107
		1108	our $MAX_RESET = 3600;
		1109	our $DEFAULT_RESET = 3000;
		1110
		1111	sub generate_random_map {
		1112	my ($self, $rmp) = @_;
		1113
		1114	# mit "rum" bekleckern, nicht
		1115	$self->_create_random_map (
		1116	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1117	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1118	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1119	$rmp->{exit_on_final_map},
		1120	$rmp->{xsize}, $rmp->{ysize},
		1121	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1122	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1123	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1124	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1125	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1126	(cf::region::find $rmp->{region}), $rmp->{custom}
		1127	)
		1128	}
		1129
		1130	sub register {
		1131	my (undef, $regex) = @_;
		1132	my $pkg = caller;
		1133
		1134	no strict;
		1135	push @{"$pkg\::ISA"}, __PACKAGE__;
		1136
		1137	$EXT_MAP{$pkg} = qr<$regex>;
		1138	}
		1139
		1140	# also paths starting with '/'
		1141	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1142
		1143	sub normalise {
		1144	my ($path, $base) = @_;
		1145
		1146	# map plan:
		1147	#
		1148	# /! non-realised random map exit (special hack!)
		1149	# {... are special paths that are not being touched
		1150	# ?xxx/... are special absolute paths
		1151	# ?random/... random maps
		1152	# /... normal maps
		1153	# ~user/... per-player map of a specific user
		1154
		1155	$path =~ s/$PATH_SEP/\//go;
		1156
		1157	# treat it as relative path if it starts with
		1158	# something that looks reasonable
		1159	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1160	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1161
		1162	$base =~ s{[^/]+/?$}{};
		1163	$path = "$base/$path";
		1164	}
		1165
		1166	for ($path) {
		1167	redo if s{//}{/};
		1168	redo if s{/\.?/}{/};
		1169	redo if s{/[^/]+/\.\./}{/};
		1170	}
		1171
		1172	$path
		1173	}
		1174
		1175	sub new_from_path {
		1176	my (undef, $path, $base) = @_;
		1177
		1178	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1179
		1180	$path = normalise $path, $base;
		1181
		1182	for my $pkg (keys %EXT_MAP) {
		1183	if ($path =~ $EXT_MAP{$pkg}) {
		1184	my $self = bless cf::map::new, $pkg;
		1185	$self->{path} = $path; $self->path ($path);
		1186	$self->init; # pass $1 etc.
		1187	return $self;
		1188	}
		1189	}
		1190
		1191	Carp::carp "unable to resolve path '$path'.";
		1192	()
		1193	}
		1194
		1195	sub init {
		1196	my ($self) = @_;
		1197
		1198	$self
		1199	}
		1200
		1201	sub as_string {
		1202	my ($self) = @_;
		1203
		1204	"$self->{path}"
		1205	}
		1206
		1207	# the displayed name, this is a one way mapping
		1208	sub visible_name {
		1209	&as_string
		1210	}
		1211
		1212	# the original (read-only) location
		1213	sub load_path {
		1214	my ($self) = @_;
		1215
		1216	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1217	}
		1218
		1219	# the temporary/swap location
		1220	sub save_path {
		1221	my ($self) = @_;
		1222
		1223	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1224	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1225	}
		1226
		1227	# the unique path, undef == no special unique path
		1228	sub uniq_path {
		1229	my ($self) = @_;
		1230
		1231	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1232	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1233	}
		1234
		1235	# and all this just because we cannot iterate over
		1236	# all maps in C++...
		1237	sub change_all_map_light {
		1238	my ($change) = @_;
		1239
		1240	$_->change_map_light ($change)
		1241	for grep $_->outdoor, values %cf::MAP;
		1242	}
		1243
		1244	sub unlink_save {
		1245	my ($self) = @_;
		1246
		1247	utf8::encode (my $save = $self->save_path);
		1248	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink $save;
		1249	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink "$save.pst";
		1250	}
		1251
		1252	sub load_header_from($) {
		1253	my ($self, $path) = @_;
		1254
		1255	utf8::encode $path;
		1256	aio_open $path, O_RDONLY, 0
		1257	or return;
		1258
		1259	$self->_load_header ($path)
		1260	or return;
		1261
		1262	$self->{load_path} = $path;
		1263
		1264	1
		1265	}
		1266
		1267	sub load_orig {
		1268	my ($self) = @_;
		1269
		1270	$self->load_header_from ($self->load_path)
		1271	}
		1272
		1273	sub load_temp {
		1274	my ($self) = @_;
		1275
		1276	$self->load_header_from ($self->save_path)
		1277	}
		1278
		1279	sub load_header {
		1280	my ($self) = @_;
		1281
		1282	if ($self->load_temp) {
		1283	$self->last_access ((delete $self->{last_access})
		1284	|| $cf::RUNTIME); #d#
		1285	# safety
		1286	$self->{instantiate_time} = $cf::RUNTIME
		1287	if $self->{instantiate_time} > $cf::RUNTIME;
		1288	} else {
		1289	$self->load_orig
		1290	or return;
		1291
		1292	$self->{load_original} = 1;
		1293	$self->{instantiate_time} = $cf::RUNTIME;
		1294	$self->last_access ($cf::RUNTIME);
		1295	$self->instantiate;
		1296	}
		1297
		1298	1
		1299	}
		1300
		1301	sub find;
		1302	sub find {
		1303	my ($path, $origin) = @_;
		1304
		1305	$path = normalise $path, $origin && $origin->path;
		1306
		1307	cf::lock_wait "map_find:$path";
		1308
		1309	$cf::MAP{$path} || do {
		1310	my $guard = cf::lock_acquire "map_find:$path";
		1311	my $map = new_from_path cf::map $path
		1312	or return;
		1313
		1314	$map->{last_save} = $cf::RUNTIME;
		1315
		1316	$map->load_header
		1317	or return;
		1318
		1319	if ($map->should_reset) {
		1320	$map->reset;
		1321	undef $guard;
		1322	$map = find $path
		1323	or return;
		1324	}
		1325
		1326	$cf::MAP{$path} = $map
		1327	}
		1328	}
		1329
		1330	sub load {
		1331	my ($self) = @_;
		1332
		1333	my $path = $self->{path};
		1334	my $guard = cf::lock_acquire "map_load:$path";
		1335
		1336	return if $self->in_memory != cf::MAP_SWAPPED;
		1337
		1338	$self->in_memory (cf::MAP_LOADING);
		1339
		1340	$self->alloc;
		1341	$self->_load_objects ($self->{load_path}, 1)
		1342	or return;
		1343
		1344	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1345	if delete $self->{load_original};
		1346
		1347	if (my $uniq = $self->uniq_path) {
		1348	utf8::encode $uniq;
		1349	if (aio_open $uniq, O_RDONLY, 0) {
		1350	$self->clear_unique_items;
		1351	$self->_load_objects ($uniq, 0);
		1352	}
		1353	}
		1354
		1355	Coro::cede;
		1356
		1357	# now do the right thing for maps
		1358	$self->link_multipart_objects;
		1359
		1360	unless ($self->{deny_activate}) {
		1361	$self->decay_objects;
		1362	$self->fix_auto_apply;
		1363	$self->update_buttons;
		1364	Coro::cede;
		1365	$self->set_darkness_map;
		1366	$self->difficulty ($self->estimate_difficulty)
		1367	unless $self->difficulty;
		1368	Coro::cede;
		1369	$self->activate;
		1370	}
		1371
		1372	$self->in_memory (cf::MAP_IN_MEMORY);
		1373	}
		1374
		1375	sub customise_for {
		1376	my ($self, $ob) = @_;
		1377
		1378	return find "~" . $ob->name . "/" . $self->{path}
		1379	if $self->per_player;
		1380
		1381	$self
		1382	}
		1383
		1384	# find and load all maps in the 3x3 area around a map
		1385	sub load_diag {
		1386	my ($map) = @_;
		1387
		1388	my @diag; # diagonal neighbours
		1389
		1390	for (0 .. 3) {
		1391	my $neigh = $map->tile_path ($_)
		1392	or next;
		1393	$neigh = find $neigh, $map
		1394	or next;
		1395	$neigh->load;
		1396
		1397	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1398	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1399	}
		1400
		1401	for (@diag) {
		1402	my $neigh = find @$_
		1403	or next;
		1404	$neigh->load;
		1405	}
		1406	}
		1407
		1408	sub find_sync {
		1409	my ($path, $origin) = @_;
		1410
		1411	cf::sync_job { find $path, $origin }
		1412	}
		1413
		1414	sub do_load_sync {
		1415	my ($map) = @_;
		1416
		1417	cf::sync_job { $map->load };
		1418	}
		1419
		1420	our %MAP_PREFETCH;
		1421	our $MAP_PREFETCHER = Coro::async {
		1422	while () {
		1423	for my $path (keys %MAP_PREFETCH) {
		1424	my $map = find $path
		1425	or next;
		1426	$map->load;
		1427
		1428	delete $MAP_PREFETCH{$path};
		1429	}
		1430	Coro::schedule;
		1431	}
		1432	};
		1433
		1434	sub find_async {
		1435	my ($path, $origin) = @_;
		1436
		1437	$path = normalise $path, $origin && $origin->{path};
		1438
		1439	if (my $map = $cf::MAP{$path}) {
		1440	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1441	}
		1442
		1443	$MAP_PREFETCH{$path} = 0;
		1444	$MAP_PREFETCHER->ready;
		1445
		1446	()
		1447	}
		1448
		1449	sub save {
		1450	my ($self) = @_;
		1451
		1452	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1453
		1454	$self->{last_save} = $cf::RUNTIME;
		1455
		1456	return unless $self->dirty;
		1457
		1458	my $save = $self->save_path; utf8::encode $save;
		1459	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1460
		1461	$self->{load_path} = $save;
		1462
		1463	return if $self->{deny_save};
		1464
		1465	local $self->{last_access} = $self->last_access;#d#
		1466
		1467	cf::async {
		1468	$_->contr->save for $self->players;
636	};	1469	};
637	$msg->($@) if $@;
638		1470
639	$msg->("reloaded");	1471	if ($uniq) {
640	};	1472	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
641		1473	$self->_save_objects ($uniq, cf::IO_UNIQUES);
642	sub perl_reload() {	1474	} else {
643	_perl_reload {	1475	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
644	warn $_[0];
645	print "$_[0]\n";
646	};	1476	}
647	}	1477	}
648		1478
649	register_command "perl-reload", 0, sub {	1479	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) = @_;	1480	my ($self) = @_;
667		1481
668	my $msg = eval { from_json $buf };	1482	# save first because save cedes
		1483	$self->save;
669		1484
670	if (ref $msg) {	1485	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		1486
680	cf::override;	1487	return if $self->players;
		1488	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1489	return if $self->{deny_save};
		1490
		1491	$self->clear;
		1492	$self->in_memory (cf::MAP_SWAPPED);
		1493	}
		1494
		1495	sub reset_at {
		1496	my ($self) = @_;
		1497
		1498	# TODO: safety, remove and allow resettable per-player maps
		1499	return 1e99 if $self->isa ("ext::map_per_player");
		1500	return 1e99 if $self->{deny_reset};
		1501
		1502	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1503	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1504
		1505	$time + $to
		1506	}
		1507
		1508	sub should_reset {
		1509	my ($self) = @_;
		1510
		1511	$self->reset_at <= $cf::RUNTIME
		1512	}
		1513
		1514	sub rename {
		1515	my ($self, $new_path) = @_;
		1516
		1517	normalise $new_path;
		1518
		1519	$self->unlink_save;
		1520
		1521	delete $cf::MAP{$self->path};
		1522	$self->{path} = $new_path; $self->path ($self->{path});
		1523	$cf::MAP{$self->path} = $self;
		1524
		1525	$self->save;
		1526	}
		1527
		1528	sub reset {
		1529	my ($self) = @_;
		1530
		1531	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1532
		1533	return if $self->players;
		1534	return if $self->isa ("ext::map_per_player");#d#
		1535
		1536	warn "resetting map ", $self->path;#d#
		1537
		1538	delete $cf::MAP{$self->path};
		1539
		1540	$self->in_memory (cf::MAP_SWAPPED);
		1541	$self->clear;
		1542
		1543	$_->clear_links_to ($self) for values %cf::MAP;
		1544
		1545	$self->unlink_save;
		1546	$self->destroy;
		1547	}
		1548
		1549	my $nuke_counter = "aaaa";
		1550
		1551	sub nuke {
		1552	my ($self) = @_;
		1553
		1554	$self->{deny_save} = 1;
		1555	$self->reset_timeout (1);
		1556	$self->rename ("{nuke}/" . ($nuke_counter++));
		1557	$self->reset; # polite request, might not happen
		1558	}
		1559
		1560	=item cf::map::unique_maps
		1561
		1562	Returns an arrayref of paths of all shared maps that have
		1563	instantiated unique items. May block.
		1564
		1565	=cut
		1566
		1567	sub unique_maps() {
		1568	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1569	or return;
		1570
		1571	my @paths;
		1572
		1573	for (@$files) {
		1574	utf8::decode $_;
		1575	next if /\.pst$/;
		1576	next unless /^$PATH_SEP/o;
		1577
		1578	s/\.map$//;
		1579	push @paths, $_;
681	},	1580	}
682	;
683		1581
684	#############################################################################	1582	\@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	}	1583	}
724		1584
725	attach_to_players	1585	package cf;
726	on_load => sub {
727	my ($pl, $path) = @_;
728		1586
729	for my $o (all_objects $pl->ob) {	1587	=back
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {
731	$o->set_ob_key_value ("_perl_data");
732		1588
733	%$o = %{ Storable::thaw pack "H*", $value };	1589	=head3 cf::object
734	}
735	}
736	},
737	;
738		1590
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	1591	=cut
747		1592
748	sub cf::player::exists($) {	1593	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		1594
		1595	=over 4
		1596
		1597	=item $ob->inv_recursive
		1598
		1599	Returns the inventory of the object _and_ their inventories, recursively.
		1600
		1601	=cut
		1602
		1603	sub inv_recursive_;
		1604	sub inv_recursive_ {
		1605	map { $_, inv_recursive_ $_->inv } @_
		1606	}
		1607
		1608	sub inv_recursive {
		1609	inv_recursive_ inv $_[0]
		1610	}
		1611
		1612	package cf;
		1613
		1614	=back
		1615
		1616	=head3 cf::object::player
		1617
		1618	=over 4
		1619
753	=item $player->reply ($npc, $msg[, $flags])	1620	=item $player_object->reply ($npc, $msg[, $flags])
754		1621
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1622	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	1623	can be C<undef>. Does the right thing when the player is currently in a
757	dialogue with the given NPC character.	1624	dialogue with the given NPC character.
758		1625
759	=cut	1626	=cut
760		1627
761	# rough implementation of a future "reply" method that works	1628	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	1629	# with dialog boxes.
		1630	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	1631	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	1632	my ($self, $npc, $msg, $flags) = @_;
765		1633
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1634	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		1635
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	1639	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	1640	$self->message ($msg, $flags);
773	}	1641	}
774	}	1642	}
775		1643
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	1644	=item $player_object->may ("access")
777		1645
778	Sends an ext reply to the player.	1646	Returns wether the given player is authorized to access resource "access"
		1647	(e.g. "command_wizcast").
779		1648
780	=cut	1649	=cut
781		1650
782	sub cf::player::ext_reply($$$%) {	1651	sub cf::object::player::may {
		1652	my ($self, $access) = @_;
		1653
		1654	$self->flag (cf::FLAG_WIZ) ||
		1655	(ref $cf::CFG{"may_$access"}
		1656	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1657	: $cf::CFG{"may_$access"})
		1658	}
		1659
		1660	=item $player_object->enter_link
		1661
		1662	Freezes the player and moves him/her to a special map (C<{link}>).
		1663
		1664	The player should be reasonably safe there for short amounts of time. You
		1665	I<MUST> call C<leave_link> as soon as possible, though.
		1666
		1667	Will never block.
		1668
		1669	=item $player_object->leave_link ($map, $x, $y)
		1670
		1671	Moves the player out of the special C<{link}> map onto the specified
		1672	map. If the map is not valid (or omitted), the player will be moved back
		1673	to the location he/she was before the call to C<enter_link>, or, if that
		1674	fails, to the emergency map position.
		1675
		1676	Might block.
		1677
		1678	=cut
		1679
		1680	sub link_map {
		1681	unless ($LINK_MAP) {
		1682	$LINK_MAP = cf::map::find "{link}"
		1683	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1684	$LINK_MAP->load;
		1685	}
		1686
		1687	$LINK_MAP
		1688	}
		1689
		1690	sub cf::object::player::enter_link {
		1691	my ($self) = @_;
		1692
		1693	$self->deactivate_recursive;
		1694
		1695	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1696
		1697	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1698	if $self->map;
		1699
		1700	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1701	}
		1702
		1703	sub cf::object::player::leave_link {
		1704	my ($self, $map, $x, $y) = @_;
		1705
		1706	my $link_pos = delete $self->{_link_pos};
		1707
		1708	unless ($map) {
		1709	# restore original map position
		1710	($map, $x, $y) = @{ $link_pos || [] };
		1711	$map = cf::map::find $map;
		1712
		1713	unless ($map) {
		1714	($map, $x, $y) = @$EMERGENCY_POSITION;
		1715	$map = cf::map::find $map
		1716	or die "FATAL: cannot load emergency map\n";
		1717	}
		1718	}
		1719
		1720	($x, $y) = (-1, -1)
		1721	unless (defined $x) && (defined $y);
		1722
		1723	# use -1 or undef as default coordinates, not 0, 0
		1724	($x, $y) = ($map->enter_x, $map->enter_y)
		1725	if $x <=0 && $y <= 0;
		1726
		1727	$map->load;
		1728	$map->load_diag;
		1729
		1730	return unless $self->contr->active;
		1731	$self->activate_recursive;
		1732	$self->enter_map ($map, $x, $y);
		1733	}
		1734
		1735	cf::player->attach (
		1736	on_logout => sub {
		1737	my ($pl) = @_;
		1738
		1739	# abort map switching before logout
		1740	if ($pl->ob->{_link_pos}) {
		1741	cf::sync_job {
		1742	$pl->ob->leave_link
		1743	};
		1744	}
		1745	},
		1746	on_login => sub {
		1747	my ($pl) = @_;
		1748
		1749	# try to abort aborted map switching on player login :)
		1750	# should happen only on crashes
		1751	if ($pl->ob->{_link_pos}) {
		1752	$pl->ob->enter_link;
		1753	(async {
		1754	# we need this sleep as the login has a concurrent enter_exit running
		1755	# and this sleep increases chances of the player not ending up in scorn
		1756	$pl->ob->reply (undef,
		1757	"There was an internal problem at your last logout, "
		1758	. "the server will try to bring you to your intended destination in a second.",
		1759	cf::NDI_RED);
		1760	Coro::Timer::sleep 1;
		1761	$pl->ob->leave_link;
		1762	})->prio (2);
		1763	}
		1764	},
		1765	);
		1766
		1767	=item $player_object->goto ($path, $x, $y)
		1768
		1769	=cut
		1770
		1771	sub cf::object::player::goto {
		1772	my ($self, $path, $x, $y) = @_;
		1773
		1774	$self->enter_link;
		1775
		1776	(async {
		1777	my $map = cf::map::find $path;
		1778	$map = $map->customise_for ($self) if $map;
		1779
		1780	# warn "entering ", $map->path, " at ($x, $y)\n"
		1781	# if $map;
		1782
		1783	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1784
		1785	$self->leave_link ($map, $x, $y);
		1786	})->prio (1);
		1787	}
		1788
		1789	=item $player_object->enter_exit ($exit_object)
		1790
		1791	=cut
		1792
		1793	sub parse_random_map_params {
		1794	my ($spec) = @_;
		1795
		1796	my $rmp = { # defaults
		1797	xsize => 10,
		1798	ysize => 10,
		1799	};
		1800
		1801	for (split /\n/, $spec) {
		1802	my ($k, $v) = split /\s+/, $_, 2;
		1803
		1804	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1805	}
		1806
		1807	$rmp
		1808	}
		1809
		1810	sub prepare_random_map {
		1811	my ($exit) = @_;
		1812
		1813	# all this does is basically replace the /! path by
		1814	# a new random map path (?random/...) with a seed
		1815	# that depends on the exit object
		1816
		1817	my $rmp = parse_random_map_params $exit->msg;
		1818
		1819	if ($exit->map) {
		1820	$rmp->{region} = $exit->map->region_name;
		1821	$rmp->{origin_map} = $exit->map->path;
		1822	$rmp->{origin_x} = $exit->x;
		1823	$rmp->{origin_y} = $exit->y;
		1824	}
		1825
		1826	$rmp->{random_seed} ||= $exit->random_seed;
		1827
		1828	my $data = cf::to_json $rmp;
		1829	my $md5 = Digest::MD5::md5_hex $data;
		1830
		1831	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1832	aio_write $fh, 0, (length $data), $data, 0;
		1833
		1834	$exit->slaying ("?random/$md5");
		1835	$exit->msg (undef);
		1836	}
		1837	}
		1838
		1839	sub cf::object::player::enter_exit {
783	my ($self, $id, %msg) = @_;	1840	my ($self, $exit) = @_;
784		1841
785	$msg{msgid} = $id;	1842	return unless $self->type == cf::PLAYER;
786		1843
787	$self->send ("ext " . to_json \%msg);	1844	$self->enter_link;
788	}
789		1845
790	#############################################################################	1846	(async {
791	# map scripting support	1847	$self->deactivate_recursive; # just to be sure
		1848	unless (eval {
		1849	prepare_random_map $exit
		1850	if $exit->slaying eq "/!";
		1851
		1852	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1853	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1854
		1855	1;
		1856	}) {
		1857	$self->message ("Something went wrong deep within the crossfire server. "
		1858	. "I'll try to bring you back to the map you were before. "
		1859	. "Please report this to the dungeon master!",
		1860	cf::NDI_UNIQUE | cf::NDI_RED);
		1861
		1862	warn "ERROR in enter_exit: $@";
		1863	$self->leave_link;
		1864	}
		1865	})->prio (1);
		1866	}
		1867
		1868	=head3 cf::client
		1869
		1870	=over 4
		1871
		1872	=item $client->send_drawinfo ($text, $flags)
		1873
		1874	Sends a drawinfo packet to the client. Circumvents output buffering so
		1875	should not be used under normal circumstances.
		1876
		1877	=cut
		1878
		1879	sub cf::client::send_drawinfo {
		1880	my ($self, $text, $flags) = @_;
		1881
		1882	utf8::encode $text;
		1883	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1884	}
		1885
		1886
		1887	=item $success = $client->query ($flags, "text", \&cb)
		1888
		1889	Queues a query to the client, calling the given callback with
		1890	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1891	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1892
		1893	Queries can fail, so check the return code. Or don't, as queries will become
		1894	reliable at some point in the future.
		1895
		1896	=cut
		1897
		1898	sub cf::client::query {
		1899	my ($self, $flags, $text, $cb) = @_;
		1900
		1901	return unless $self->state == ST_PLAYING
		1902	|| $self->state == ST_SETUP
		1903	|| $self->state == ST_CUSTOM;
		1904
		1905	$self->state (ST_CUSTOM);
		1906
		1907	utf8::encode $text;
		1908	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1909
		1910	$self->send_packet ($self->{query_queue}[0][0])
		1911	if @{ $self->{query_queue} } == 1;
		1912	}
		1913
		1914	cf::client->attach (
		1915	on_reply => sub {
		1916	my ($ns, $msg) = @_;
		1917
		1918	# this weird shuffling is so that direct followup queries
		1919	# get handled first
		1920	my $queue = delete $ns->{query_queue}
		1921	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1922
		1923	(shift @$queue)->[1]->($msg);
		1924
		1925	push @{ $ns->{query_queue} }, @$queue;
		1926
		1927	if (@{ $ns->{query_queue} } == @$queue) {
		1928	if (@$queue) {
		1929	$ns->send_packet ($ns->{query_queue}[0][0]);
		1930	} else {
		1931	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1932	}
		1933	}
		1934	},
		1935	);
		1936
		1937	=item $client->async (\&cb)
		1938
		1939	Create a new coroutine, running the specified callback. The coroutine will
		1940	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1941	or loss of connection).
		1942
		1943	=cut
		1944
		1945	sub cf::client::async {
		1946	my ($self, $cb) = @_;
		1947
		1948	my $coro = &Coro::async ($cb);
		1949
		1950	$coro->on_destroy (sub {
		1951	delete $self->{_coro}{$coro+0};
		1952	});
		1953
		1954	$self->{_coro}{$coro+0} = $coro;
		1955
		1956	$coro
		1957	}
		1958
		1959	cf::client->attach (
		1960	on_destroy => sub {
		1961	my ($ns) = @_;
		1962
		1963	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1964	},
		1965	);
		1966
		1967	=back
		1968
		1969
		1970	=head2 SAFE SCRIPTING
		1971
		1972	Functions that provide a safe environment to compile and execute
		1973	snippets of perl code without them endangering the safety of the server
		1974	itself. Looping constructs, I/O operators and other built-in functionality
		1975	is not available in the safe scripting environment, and the number of
		1976	functions and methods that can be called is greatly reduced.
		1977
		1978	=cut
792		1979
793	our $safe = new Safe "safe";	1980	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	1981	our $safe_hole = new Safe::Hole;
795		1982
796	$SIG{FPE} = 'IGNORE';	1983	$SIG{FPE} = 'IGNORE';
797		1984
798	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1985	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
799		1986
800	# here we export the classes and methods available to script code	1987	# here we export the classes and methods available to script code
801		1988
		1989	=pod
		1990
		1991	The following fucntions and emthods are available within a safe environment:
		1992
		1993	cf::object contr pay_amount pay_player map
		1994	cf::object::player player
		1995	cf::player peaceful
		1996	cf::map trigger
		1997
		1998	=cut
		1999
802	for (	2000	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	2001	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	2002	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	2003	["cf::player" => qw(peaceful)],
		2004	["cf::map" => qw(trigger)],
806	) {	2005	) {
807	no strict 'refs';	2006	no strict 'refs';
808	my ($pkg, @funs) = @$_;	2007	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2008	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	2009	for @funs;
811	}	2010	}
		2011
		2012	=over 4
		2013
		2014	=item @retval = safe_eval $code, [var => value, ...]
		2015
		2016	Compiled and executes the given perl code snippet. additional var/value
		2017	pairs result in temporary local (my) scalar variables of the given name
		2018	that are available in the code snippet. Example:
		2019
		2020	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2021
		2022	=cut
812		2023
813	sub safe_eval($;@) {	2024	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	2025	my ($code, %vars) = @_;
815		2026
816	my $qcode = $code;	2027	my $qcode = $code;
…		…
839	}	2050	}
840		2051
841	wantarray ? @res : $res[0]	2052	wantarray ? @res : $res[0]
842	}	2053	}
843		2054
		2055	=item cf::register_script_function $function => $cb
		2056
		2057	Register a function that can be called from within map/npc scripts. The
		2058	function should be reasonably secure and should be put into a package name
		2059	like the extension.
		2060
		2061	Example: register a function that gets called whenever a map script calls
		2062	C<rent::overview>, as used by the C<rent> extension.
		2063
		2064	cf::register_script_function "rent::overview" => sub {
		2065	...
		2066	};
		2067
		2068	=cut
		2069
844	sub register_script_function {	2070	sub register_script_function {
845	my ($fun, $cb) = @_;	2071	my ($fun, $cb) = @_;
846		2072
847	no strict 'refs';	2073	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2074	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	2075	}
850		2076
		2077	=back
		2078
		2079	=cut
		2080
		2081	#############################################################################
		2082
		2083	=head2 EXTENSION DATABASE SUPPORT
		2084
		2085	Crossfire maintains a very simple database for extension use. It can
		2086	currently store anything that can be serialised using Storable, which
		2087	excludes objects.
		2088
		2089	The parameter C<$family> should best start with the name of the extension
		2090	using it, it should be unique.
		2091
		2092	=over 4
		2093
		2094	=item $hashref = cf::db_get $family
		2095
		2096	Return a hashref for use by the extension C<$family>, which can be
		2097	modified. After modifications, you have to call C<cf::db_dirty> or
		2098	C<cf::db_sync>.
		2099
		2100	=item $value = cf::db_get $family => $key
		2101
		2102	Returns a single value from the database
		2103
		2104	=item cf::db_put $family => $hashref
		2105
		2106	Stores the given family hashref into the database. Updates are delayed, if
		2107	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2108
		2109	=item cf::db_put $family => $key => $value
		2110
		2111	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2112	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2113
		2114	=item cf::db_dirty
		2115
		2116	Marks the database as dirty, to be updated at a later time.
		2117
		2118	=item cf::db_sync
		2119
		2120	Immediately write the database to disk I<if it is dirty>.
		2121
		2122	=cut
		2123
		2124	our $DB;
		2125
		2126	{
		2127	my $path = cf::localdir . "/database.pst";
		2128
		2129	sub db_load() {
		2130	$DB = stat $path ? Storable::retrieve $path : { };
		2131	}
		2132
		2133	my $pid;
		2134
		2135	sub db_save() {
		2136	waitpid $pid, 0 if $pid;
		2137	if (0 == ($pid = fork)) {
		2138	$DB->{_meta}{version} = 1;
		2139	Storable::nstore $DB, "$path~";
		2140	rename "$path~", $path;
		2141	cf::_exit 0 if defined $pid;
		2142	}
		2143	}
		2144
		2145	my $dirty;
		2146
		2147	sub db_sync() {
		2148	db_save if $dirty;
		2149	undef $dirty;
		2150	}
		2151
		2152	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2153	db_sync;
		2154	});
		2155
		2156	sub db_dirty() {
		2157	$dirty = 1;
		2158	$idle->start;
		2159	}
		2160
		2161	sub db_get($;$) {
		2162	@_ >= 2
		2163	? $DB->{$_[0]}{$_[1]}
		2164	: ($DB->{$_[0]} ||= { })
		2165	}
		2166
		2167	sub db_put($$;$) {
		2168	if (@_ >= 3) {
		2169	$DB->{$_[0]}{$_[1]} = $_[2];
		2170	} else {
		2171	$DB->{$_[0]} = $_[1];
		2172	}
		2173	db_dirty;
		2174	}
		2175
		2176	cf::global->attach (
		2177	prio => 10000,
		2178	on_cleanup => sub {
		2179	db_sync;
		2180	},
		2181	);
		2182	}
		2183
851	#############################################################################	2184	#############################################################################
852	# the server's main()	2185	# the server's main()
853		2186
		2187	sub cfg_load {
		2188	open my $fh, "<:utf8", cf::confdir . "/config"
		2189	or return;
		2190
		2191	local $/;
		2192	*CFG = YAML::Syck::Load <$fh>;
		2193
		2194	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2195
		2196	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2197	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2198
		2199	if (exists $CFG{mlockall}) {
		2200	eval {
		2201	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2202	and die "WARNING: m(un)lockall failed: $!\n";
		2203	};
		2204	warn $@ if $@;
		2205	}
		2206	}
		2207
854	sub main {	2208	sub main {
		2209	# we must not ever block the main coroutine
		2210	local $Coro::idle = sub {
		2211	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2212	async { Event::one_event };
		2213	};
		2214
		2215	cfg_load;
		2216	db_load;
		2217	load_extensions;
855	Event::loop;	2218	Event::loop;
856	}	2219	}
857		2220
858	#############################################################################	2221	#############################################################################
859	# initialisation	2222	# initialisation and cleanup
860		2223
861	register "<global>", __PACKAGE__;	2224	# install some emergency cleanup handlers
		2225	BEGIN {
		2226	for my $signal (qw(INT HUP TERM)) {
		2227	Event->signal (
		2228	data => WF_AUTOCANCEL,
		2229	signal => $signal,
		2230	cb => sub {
		2231	cf::cleanup "SIG$signal";
		2232	},
		2233	);
		2234	}
		2235	}
		2236
		2237	sub emergency_save() {
		2238	my $freeze_guard = cf::freeze_mainloop;
		2239
		2240	warn "enter emergency perl save\n";
		2241
		2242	cf::sync_job {
		2243	# use a peculiar iteration method to avoid tripping on perl
		2244	# refcount bugs in for. also avoids problems with players
		2245	# and maps saved/destroyed asynchronously.
		2246	warn "begin emergency player save\n";
		2247	for my $login (keys %cf::PLAYER) {
		2248	my $pl = $cf::PLAYER{$login} or next;
		2249	$pl->valid or next;
		2250	$pl->save;
		2251	}
		2252	warn "end emergency player save\n";
		2253
		2254	warn "begin emergency map save\n";
		2255	for my $path (keys %cf::MAP) {
		2256	my $map = $cf::MAP{$path} or next;
		2257	$map->valid or next;
		2258	$map->save;
		2259	}
		2260	warn "end emergency map save\n";
		2261	};
		2262
		2263	warn "leave emergency perl save\n";
		2264	}
		2265
		2266	sub reload() {
		2267	# can/must only be called in main
		2268	if ($Coro::current != $Coro::main) {
		2269	warn "can only reload from main coroutine\n";
		2270	return;
		2271	}
		2272
		2273	warn "reloading...";
		2274
		2275	warn "freezing server";
		2276	my $guard = freeze_mainloop;
		2277	cf::emergency_save;
		2278
		2279	warn "sync database to disk";
		2280	cf::db_sync;
		2281	IO::AIO::flush;
		2282
		2283	eval {
		2284	# if anything goes wrong in here, we should simply crash as we already saved
		2285
		2286	warn "cancel all watchers";
		2287	for (Event::all_watchers) {
		2288	$_->cancel if $_->data & WF_AUTOCANCEL;
		2289	}
		2290
		2291	warn "cancel all extension coros";
		2292	$_->cancel for values %EXT_CORO;
		2293	%EXT_CORO = ();
		2294
		2295	warn "remove commands";
		2296	%COMMAND = ();
		2297
		2298	warn "remove ext commands";
		2299	%EXTCMD = ();
		2300
		2301	warn "unload/nuke all extensions";
		2302	for my $pkg (@EXTS) {
		2303	warn "... unloading $pkg";
		2304
		2305	if (my $cb = $pkg->can ("unload")) {
		2306	eval {
		2307	$cb->($pkg);
		2308	1
		2309	} or warn "$pkg unloaded, but with errors: $@";
		2310	}
		2311
		2312	warn "... nuking $pkg";
		2313	Symbol::delete_package $pkg;
		2314	}
		2315
		2316	warn "unload all perl modules loaded from $LIBDIR";
		2317	while (my ($k, $v) = each %INC) {
		2318	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2319
		2320	warn "removing <$k>";
		2321	delete $INC{$k};
		2322
		2323	$k =~ s/\.pm$//;
		2324	$k =~ s/\//::/g;
		2325
		2326	if (my $cb = $k->can ("unload_module")) {
		2327	$cb->();
		2328	}
		2329
		2330	Symbol::delete_package $k;
		2331	}
		2332
		2333	warn "get rid of safe::, as good as possible";
		2334	Symbol::delete_package "safe::$_"
		2335	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2336
		2337	warn "unload cf.pm \"a bit\"";
		2338	delete $INC{"cf.pm"};
		2339
		2340	# don't, removes xs symbols, too,
		2341	# and global variables created in xs
		2342	#Symbol::delete_package __PACKAGE__;
		2343
		2344	warn "reloading cf.pm";
		2345	require cf;
		2346	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2347
		2348	warn "load config and database again";
		2349	cf::cfg_load;
		2350	cf::db_load;
		2351
		2352	warn "load extensions";
		2353	cf::load_extensions;
		2354
		2355	warn "reattach attachments to objects/players";
		2356	_global_reattach;
		2357	warn "reattach attachments to maps";
		2358	reattach $_ for values %MAP;
		2359	};
		2360
		2361	if ($@) {
		2362	warn $@;
		2363	warn "error while reloading, exiting.";
		2364	exit 1;
		2365	}
		2366
		2367	warn "reloaded";
		2368	};
		2369
		2370	register_command "reload" => sub {
		2371	my ($who, $arg) = @_;
		2372
		2373	if ($who->flag (FLAG_WIZ)) {
		2374	$who->message ("start of reload.");
		2375	reload;
		2376	$who->message ("end of reload.");
		2377	}
		2378	};
862		2379
863	unshift @INC, $LIBDIR;	2380	unshift @INC, $LIBDIR;
864		2381
865	load_extensions;
866
867	$TICK_WATCHER = Event->timer (	2382	$TICK_WATCHER = Event->timer (
		2383	reentrant => 0,
868	prio => 1,	2384	prio => 0,
869	at => $NEXT_TICK || 1,	2385	at => $NEXT_TICK || $TICK,
		2386	data => WF_AUTOCANCEL,
870	cb => sub {	2387	cb => sub {
		2388	$NOW = Event::time;
		2389
871	cf::server_tick; # one server iteration	2390	cf::server_tick; # one server iteration
872		2391	$RUNTIME += $TICK;
873	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	2392	$NEXT_TICK += $TICK;
875		2393
		2394	$WAIT_FOR_TICK->broadcast;
		2395	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2396
876	# if we are delayed by four ticks, skip them all	2397	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2398	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
878		2399
879	$TICK_WATCHER->at ($NEXT_TICK);	2400	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	2401	$TICK_WATCHER->start;
881	},	2402	},
882	);	2403	);
883		2404
884	_reload_2;	2405	IO::AIO::max_poll_time $TICK * 0.2;
		2406
		2407	Event->io (
		2408	fd => IO::AIO::poll_fileno,
		2409	poll => 'r',
		2410	prio => 5,
		2411	data => WF_AUTOCANCEL,
		2412	cb => \&IO::AIO::poll_cb,
		2413	);
		2414
		2415	Event->timer (
		2416	data => WF_AUTOCANCEL,
		2417	after => 0,
		2418	interval => 10,
		2419	cb => sub {
		2420	(Coro::unblock_sub {
		2421	write_runtime
		2422	or warn "ERROR: unable to write runtime file: $!";
		2423	})->();
		2424	},
		2425	);
		2426
		2427	END { cf::emergency_save }
885		2428
886	1	2429	1
887		2430

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