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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.80 by root, Tue Nov 7 16:30:55 2006 UTC vs.
Revision 1.271 by root, Fri Jun 1 06:04:08 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
10	use IO::AIO ();	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
11	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
12	use Time::HiRes;	31	use Time::HiRes;
13	use Event;	32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
14	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
15		41
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
18		44
19	use strict;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		46
21	_init_vars;	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		48
23	our %COMMAND = ();	49	our %COMMAND = ();
		50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
		53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
		56
		57	our $RELOAD; # number of reloads so far
24	our @EVENT;	58	our @EVENT;
25	our $LIBDIR = maps_directory "perl";
26		59
27	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
28	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
29	our $NEXT_TICK;	76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
30		82
31	our %CFG;	83	our %CFG;
32		84
33	our $uptime;	85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
34		87
35	$uptime ||= time;	88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
36		115
37	#############################################################################	116	#############################################################################
38		117
39	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
40		119
41	=over 4	120	=over 4
42		121
43	=item $cf::LIBDIR	122	=item $cf::UPTIME
44		123
45	The perl library directory, where extensions and cf-specific modules can	124	The timestamp of the server start (so not actually an uptime).
46	be found. It will be added to C<@INC> automatically.	125
		126	=item $cf::RUNTIME
		127
		128	The time this server has run, starts at 0 and is increased by $cf::TICK on
		129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
47		143
48	=item $cf::TICK	144	=item $cf::TICK
49		145
50	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
51		157
52	=item %cf::CFG	158	=item %cf::CFG
53		159
54	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
55	from wherever your confdir points to.	161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
56		168
57	=back	169	=back
58		170
59	=cut	171	=cut
60		172
61	BEGIN {	173	BEGIN {
62	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
63	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
64	$msg .= "\n"	177	$msg .= "\n"
65	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
66		179
67	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
68	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
69	};	184	};
70	}	185	}
71		186
		187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
72	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
73		193
74	# we bless all objects into (empty) derived classes to force a method lookup	194	# we bless all objects into (empty) derived classes to force a method lookup
75	# within the Safe compartment.	195	# within the Safe compartment.
76	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	196	for my $pkg (qw(
		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
77	no strict 'refs';	203	no strict 'refs';
78	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79	}	205	}
80		206
81	$Event::DIED = sub {	207	$Event::DIED = sub {
82	warn "error in event callback: @_";	208	warn "error in event callback: @_";
83	};	209	};
84		210
85	my %ext_pkg;
86	my @exts;
87	my @hook;
88	my %command;
89	my %extcmd;
90
91	=head2 UTILITY FUNCTIONS	211	=head2 UTILITY FUNCTIONS
92		212
93	=over 4	213	=over 4
94		214
95	=cut	215	=item dumpval $ref
96		216
		217	=cut
		218
		219	sub dumpval {
		220	eval {
		221	local $SIG{__DIE__};
		222	my $d;
		223	if (1) {
		224	$d = new Data::Dumper([$_[0]], ["*var"]);
		225	$d->Terse(1);
		226	$d->Indent(2);
		227	$d->Quotekeys(0);
		228	$d->Useqq(1);
		229	#$d->Bless(...);
		230	$d->Seen($_[1]) if @_ > 1;
		231	$d = $d->Dump();
		232	}
		233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		234	$d
		235	} || "[unable to dump $_[0]: '$@']";
		236	}
		237
97	use JSON::Syck (); # TODO# replace by JSON::PC once working	238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
98		239
99	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
100		241
101	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
102		243
103	=cut
104
105	sub from_json($) {
106	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
107	JSON::Syck::Load $_[0]
108	}
109
110	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
111		245
112	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
113		247
114	=cut	248	=item cf::lock_wait $string
115		249
116	sub to_json($) {	250	Wait until the given lock is available. See cf::lock_acquire.
117	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	251
118	JSON::Syck::Dump $_[0]	252	=item my $lock = cf::lock_acquire $string
		253
		254	Wait until the given lock is available and then acquires it and returns
		255	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		256	for example when the coroutine gets canceled), the lock is automatically
		257	returned.
		258
		259	Lock names should begin with a unique identifier (for example, cf::map::find
		260	uses map_find and cf::map::load uses map_load).
		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
		266	=cut
		267
		268	our %LOCK;
		269
		270	sub lock_wait($) {
		271	my ($key) = @_;
		272
		273	# wait for lock, if any
		274	while ($LOCK{$key}) {
		275	push @{ $LOCK{$key} }, $Coro::current;
		276	Coro::schedule;
		277	}
		278	}
		279
		280	sub lock_acquire($) {
		281	my ($key) = @_;
		282
		283	# wait, to be sure we are not locked
		284	lock_wait $key;
		285
		286	$LOCK{$key} = [];
		287
		288	Coro::guard {
		289	# wake up all waiters, to be on the safe side
		290	$_->ready for @{ delete $LOCK{$key} };
		291	}
		292	}
		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
		300	sub freeze_mainloop {
		301	return unless $TICK_WATCHER->is_active;
		302
		303	my $guard = Coro::guard {
		304	$TICK_WATCHER->start;
		305	};
		306	$TICK_WATCHER->stop;
		307	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
		319
		320	=item cf::sync_job { BLOCK }
		321
		322	The design of crossfire+ requires that the main coro ($Coro::main) is
		323	always able to handle events or runnable, as crossfire+ is only partly
		324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		325
		326	If it must be done, put the blocking parts into C<sync_job>. This will run
		327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($job) = @_;
		335
		336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
		339	# this is the main coro, too bad, we have to block
		340	# till the operation succeeds, freezing the server :/
		341
		342	# TODO: use suspend/resume instead
		343	# (but this is cancel-safe)
		344	my $freeze_guard = freeze_mainloop;
		345
		346	my $busy = 1;
		347	my @res;
		348
		349	(async {
		350	@res = eval { $job->() };
		351	warn $@ if $@;
		352	undef $busy;
		353	})->prio (Coro::PRIO_MAX);
		354
		355	while ($busy) {
		356	Coro::cede or Event::one_event;
		357	}
		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
		366	wantarray ? @res : $res[0]
		367	} else {
		368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
		371	}
		372	}
		373
		374	=item $coro = cf::async_ext { BLOCK }
		375
		376	Like async, but this coro is automatically being canceled when the
		377	extension calling this is being unloaded.
		378
		379	=cut
		380
		381	sub async_ext(&) {
		382	my $cb = shift;
		383
		384	my $coro = &Coro::async ($cb);
		385
		386	$coro->on_destroy (sub {
		387	delete $EXT_CORO{$coro+0};
		388	});
		389	$EXT_CORO{$coro+0} = $coro;
		390
		391	$coro
		392	}
		393
		394	sub write_runtime {
		395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	IO::AIO::aio_utime $runtime, undef, undef;
		401
		402	my $guard = cf::lock_acquire "write_runtime";
		403
		404	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		405	or return;
		406
		407	my $value = $cf::RUNTIME + 90 + 10;
		408	# 10 is the runtime save interval, for a monotonic clock
		409	# 60 allows for the watchdog to kill the server.
		410
		411	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		412	and return;
		413
		414	# always fsync - this file is important
		415	aio_fsync $fh
		416	and return;
		417
		418	# touch it again to show we are up-to-date
		419	aio_utime $fh, undef, undef;
		420
		421	close $fh
		422	or return;
		423
		424	aio_rename "$runtime~", $runtime
		425	and return;
		426
		427	warn "runtime file written.\n";#d#
		428
		429	1
		430	}
		431
		432	=item cf::datalog type => key => value, ...
		433
		434	Log a datalog packet of the given type with the given key-value pairs.
		435
		436	=cut
		437
		438	sub datalog($@) {
		439	my ($type, %kv) = @_;
		440	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
119	}	441	}
120		442
121	=back	443	=back
122		444
123	=cut	445	=cut
124		446
125	#############################################################################	447	#############################################################################
126		448
127	=head2 EVENTS AND OBJECT ATTACHMENTS	449	=head2 ATTACHABLE OBJECTS
		450
		451	Many objects in crossfire are so-called attachable objects. That means you can
		452	attach callbacks/event handlers (a collection of which is called an "attachment")
		453	to it. All such attachable objects support the following methods.
		454
		455	In the following description, CLASS can be any of C<global>, C<object>
		456	C<player>, C<client> or C<map> (i.e. the attachable objects in
		457	crossfire+).
128		458
129	=over 4	459	=over 4
130		460
131	=item $object->attach ($attachment, key => $value...)
132
133	=item $object->detach ($attachment)
134
135	Attach/detach a pre-registered attachment to an object.
136
137	=item $player->attach ($attachment, key => $value...)
138
139	=item $player->detach ($attachment)
140
141	Attach/detach a pre-registered attachment to a player.
142
143	=item $map->attach ($attachment, key => $value...)	461	=item $attachable->attach ($attachment, key => $value...)
144		462
145	=item $map->detach ($attachment)	463	=item $attachable->detach ($attachment)
146		464
147	Attach/detach a pre-registered attachment to a map.	465	Attach/detach a pre-registered attachment to a specific object and give it
		466	the specified key/value pairs as arguments.
148		467
149	=item $bool = $object->attached ($name)	468	Example, attach a minesweeper attachment to the given object, making it a
		469	10x10 minesweeper game:
150		470
151	=item $bool = $player->attached ($name)	471	$obj->attach (minesweeper => width => 10, height => 10);
152		472
153	=item $bool = $map->attached ($name)	473	=item $bool = $attachable->attached ($name)
154		474
155	Checks wether the named attachment is currently attached to the object.	475	Checks wether the named attachment is currently attached to the object.
156		476
157	=item cf::attach_global ...	477	=item cf::CLASS->attach ...
158		478
159	Attach handlers for global events.	479	=item cf::CLASS->detach ...
160		480
161	This and all following C<attach_*>-functions expect any number of the	481	Define an anonymous attachment and attach it to all objects of the given
162	following handler/hook descriptions:	482	CLASS. See the next function for an explanation of its arguments.
		483
		484	You can attach to global events by using the C<cf::global> class.
		485
		486	Example, log all player logins:
		487
		488	cf::player->attach (
		489	on_login => sub {
		490	my ($pl) = @_;
		491	...
		492	},
		493	);
		494
		495	Example, attach to the jeweler skill:
		496
		497	cf::object->attach (
		498	type => cf::SKILL,
		499	subtype => cf::SK_JEWELER,
		500	on_use_skill => sub {
		501	my ($sk, $ob, $part, $dir, $msg) = @_;
		502	...
		503	},
		504	);
		505
		506	=item cf::CLASS::attachment $name, ...
		507
		508	Register an attachment by C<$name> through which attachable objects of the
		509	given CLASS can refer to this attachment.
		510
		511	Some classes such as crossfire maps and objects can specify attachments
		512	that are attached at load/instantiate time, thus the need for a name.
		513
		514	These calls expect any number of the following handler/hook descriptions:
163		515
164	=over 4	516	=over 4
165		517
166	=item prio => $number	518	=item prio => $number
167		519
…		…
169	by another C<prio> setting). Lower priority handlers get executed	521	by another C<prio> setting). Lower priority handlers get executed
170	earlier. The default priority is C<0>, and many built-in handlers are	522	earlier. The default priority is C<0>, and many built-in handlers are
171	registered at priority C<-1000>, so lower priorities should not be used	523	registered at priority C<-1000>, so lower priorities should not be used
172	unless you know what you are doing.	524	unless you know what you are doing.
173		525
		526	=item type => $type
		527
		528	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		529	given type of objects only (the additional parameter C<subtype> can be
		530	used to further limit to the given subtype).
		531
174	=item on_I<event> => \&cb	532	=item on_I<event> => \&cb
175		533
176	Call the given code reference whenever the named event happens (event is	534	Call the given code reference whenever the named event happens (event is
177	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	535	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
178	handlers are recognised generally depends on the type of object these	536	handlers are recognised generally depends on the type of object these
…		…
187	package and register them. Only handlers for eevents supported by the	545	package and register them. Only handlers for eevents supported by the
188	object/class are recognised.	546	object/class are recognised.
189		547
190	=back	548	=back
191		549
192	=item cf::attach_to_type $object_type, $subtype, ...	550	Example, define an attachment called "sockpuppet" that calls the given
		551	event handler when a monster attacks:
193		552
194	Attach handlers for a specific object type (e.g. TRANSPORT) and	553	cf::object::attachment sockpuppet =>
195	subtype. If C<$subtype> is zero or undef, matches all objects of the given	554	on_skill_attack => sub {
196	type.	555	my ($self, $victim) = @_;
197		556	...
198	=item cf::attach_to_objects ...
199
200	Attach handlers to all objects. Do not use this except for debugging or
201	very rare events, as handlers are (obviously) called for I<all> objects in
202	the game.
203
204	=item cf::attach_to_players ...
205
206	Attach handlers to all players.
207
208	=item cf::attach_to_maps ...
209
210	Attach handlers to all maps.
211
212	=item cf:register_attachment $name, ...
213
214	Register an attachment by name through which objects can refer to this
215	attachment.
216
217	=item cf:register_player_attachment $name, ...
218
219	Register an attachment by name through which players can refer to this
220	attachment.
221
222	=item cf:register_map_attachment $name, ...
223
224	Register an attachment by name through which maps can refer to this
225	attachment.
226
227	=cut
228
229	# the following variables are defined in .xs and must not be re-created
230	our @CB_GLOBAL = (); # registry for all global events
231	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
232	our @CB_PLAYER = ();
233	our @CB_TYPE = (); # registry for type (cf-object class) based events
234	our @CB_MAP = ();
235
236	my %attachment;
237
238	sub _attach_cb($\%$$$) {
239	my ($registry, $undo, $event, $prio, $cb) = @_;
240
241	use sort 'stable';
242
243	$cb = [$prio, $cb];
244
245	@{$registry->[$event]} = sort
246	{ $a->[0] cmp $b->[0] }
247	@{$registry->[$event] || []}, $cb;
248
249	push @{$undo->{cb}}, [$event, $cb];
250	}
251
252	# attach handles attaching event callbacks
253	# the only thing the caller has to do is pass the correct
254	# registry (== where the callback attaches to).
255	sub _attach(\@$@) {
256	my ($registry, $klass, @arg) = @_;
257
258	my $prio = 0;
259
260	my %undo = (
261	registry => $registry,
262	cb => [],
263	);
264
265	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
266
267	while (@arg) {
268	my $type = shift @arg;
269
270	if ($type eq "prio") {
271	$prio = shift @arg;
272
273	} elsif ($type eq "package") {
274	my $pkg = shift @arg;
275
276	while (my ($name, $id) = each %cb_id) {
277	if (my $cb = $pkg->can ($name)) {
278	_attach_cb $registry, %undo, $id, $prio, $cb;
279	}
280	}	557	}
281
282	} elsif (exists $cb_id{$type}) {
283	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
284
285	} elsif (ref $type) {
286	warn "attaching objects not supported, ignoring.\n";
287
288	} else {
289	shift @arg;
290	warn "attach argument '$type' not supported, ignoring.\n";
291	}
292	}
293
294	\%undo
295	}
296
297	sub _attach_attachment {
298	my ($obj, $name, %arg) = @_;
299
300	return if exists $obj->{_attachment}{$name};
301
302	my $res;
303
304	if (my $attach = $attachment{$name}) {
305	my $registry = $obj->registry;
306
307	for (@$attach) {
308	my ($klass, @attach) = @$_;
309	$res = _attach @$registry, $klass, @attach;
310	}
311
312	$obj->{$name} = \%arg;
313	} else {
314	warn "object uses attachment '$name' that is not available, postponing.\n";
315	}
316
317	$obj->{_attachment}{$name} = undef;
318
319	$res->{attachment} = $name;
320	$res
321	}
322
323	*cf::object::attach =
324	*cf::player::attach =
325	*cf::map::attach = sub {
326	my ($obj, $name, %arg) = @_;
327
328	_attach_attachment $obj, $name, %arg;
329	};
330
331	# all those should be optimised
332	*cf::object::detach =
333	*cf::player::detach =
334	*cf::map::detach = sub {
335	my ($obj, $name) = @_;
336
337	delete $obj->{_attachment}{$name};
338	reattach ($obj);
339	};
340
341	*cf::object::attached =
342	*cf::player::attached =
343	*cf::map::attached = sub {
344	my ($obj, $name) = @_;
345
346	exists $obj->{_attachment}{$name}
347	};
348
349	sub attach_global {
350	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
351	}
352
353	sub attach_to_type {
354	my $type = shift;
355	my $subtype = shift;
356
357	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
358	}
359
360	sub attach_to_objects {
361	_attach @CB_OBJECT, KLASS_OBJECT, @_
362	}
363
364	sub attach_to_players {
365	_attach @CB_PLAYER, KLASS_PLAYER, @_
366	}
367
368	sub attach_to_maps {
369	_attach @CB_MAP, KLASS_MAP, @_
370	}
371
372	sub register_attachment {
373	my $name = shift;
374
375	$attachment{$name} = [[KLASS_OBJECT, @_]];
376	}
377
378	sub register_player_attachment {
379	my $name = shift;
380
381	$attachment{$name} = [[KLASS_PLAYER, @_]];
382	}
383
384	sub register_map_attachment {
385	my $name = shift;
386
387	$attachment{$name} = [[KLASS_MAP, @_]];
388	}
389
390	our $override;
391	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
392
393	sub override {
394	$override = 1;
395	@invoke_results = ();
396	}
397
398	sub do_invoke {
399	my $event = shift;
400	my $callbacks = shift;
401
402	@invoke_results = ();
403
404	local $override;
405
406	for (@$callbacks) {
407	eval { &{$_->[1]} };
408
409	if ($@) {
410	warn "$@";
411	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
412	override;
413	}
414
415	return 1 if $override;
416	}
417
418	0	558	}
419	}
420		559
421	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	560	=item $attachable->valid
422
423	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
424
425	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
426
427	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
428
429	Generate a global/object/player/map-specific event with the given arguments.
430
431	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
432	removed in future versions), and there is no public API to access override
433	results (if you must, access C<@cf::invoke_results> directly).
434
435	=back
436
437	=cut
438
439	#############################################################################
440
441	=head2 METHODS VALID FOR ALL CORE OBJECTS
442
443	=over 4
444
445	=item $object->valid, $player->valid, $map->valid
446		561
447	Just because you have a perl object does not mean that the corresponding	562	Just because you have a perl object does not mean that the corresponding
448	C-level object still exists. If you try to access an object that has no	563	C-level object still exists. If you try to access an object that has no
449	valid C counterpart anymore you get an exception at runtime. This method	564	valid C counterpart anymore you get an exception at runtime. This method
450	can be used to test for existence of the C object part without causing an	565	can be used to test for existence of the C object part without causing an
451	exception.	566	exception.
452		567
		568	=cut
		569
		570	# the following variables are defined in .xs and must not be re-created
		571	our @CB_GLOBAL = (); # registry for all global events
		572	our @CB_ATTACHABLE = (); # registry for all attachables
		573	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		574	our @CB_PLAYER = ();
		575	our @CB_CLIENT = ();
		576	our @CB_TYPE = (); # registry for type (cf-object class) based events
		577	our @CB_MAP = ();
		578
		579	my %attachment;
		580
		581	sub cf::attachable::thawer_merge {
		582	# simply override everything except _meta
		583	local $_[0]{_meta};
		584	%{$_[0]} = %{$_[1]};
		585	}
		586
		587	sub _attach_cb($$$$) {
		588	my ($registry, $event, $prio, $cb) = @_;
		589
		590	use sort 'stable';
		591
		592	$cb = [$prio, $cb];
		593
		594	@{$registry->[$event]} = sort
		595	{ $a->[0] cmp $b->[0] }
		596	@{$registry->[$event] || []}, $cb;
		597	}
		598
		599	# hack
		600	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		601
		602	# attach handles attaching event callbacks
		603	# the only thing the caller has to do is pass the correct
		604	# registry (== where the callback attaches to).
		605	sub _attach {
		606	my ($registry, $klass, @arg) = @_;
		607
		608	my $object_type;
		609	my $prio = 0;
		610	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		611
		612	#TODO: get rid of this hack
		613	if ($attachable_klass{$klass}) {
		614	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		615	}
		616
		617	while (@arg) {
		618	my $type = shift @arg;
		619
		620	if ($type eq "prio") {
		621	$prio = shift @arg;
		622
		623	} elsif ($type eq "type") {
		624	$object_type = shift @arg;
		625	$registry = $CB_TYPE[$object_type] ||= [];
		626
		627	} elsif ($type eq "subtype") {
		628	defined $object_type or Carp::croak "subtype specified without type";
		629	my $object_subtype = shift @arg;
		630	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		631
		632	} elsif ($type eq "package") {
		633	my $pkg = shift @arg;
		634
		635	while (my ($name, $id) = each %cb_id) {
		636	if (my $cb = $pkg->can ($name)) {
		637	_attach_cb $registry, $id, $prio, $cb;
		638	}
		639	}
		640
		641	} elsif (exists $cb_id{$type}) {
		642	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		643
		644	} elsif (ref $type) {
		645	warn "attaching objects not supported, ignoring.\n";
		646
		647	} else {
		648	shift @arg;
		649	warn "attach argument '$type' not supported, ignoring.\n";
		650	}
		651	}
		652	}
		653
		654	sub _object_attach {
		655	my ($obj, $name, %arg) = @_;
		656
		657	return if exists $obj->{_attachment}{$name};
		658
		659	if (my $attach = $attachment{$name}) {
		660	my $registry = $obj->registry;
		661
		662	for (@$attach) {
		663	my ($klass, @attach) = @$_;
		664	_attach $registry, $klass, @attach;
		665	}
		666
		667	$obj->{$name} = \%arg;
		668	} else {
		669	warn "object uses attachment '$name' that is not available, postponing.\n";
		670	}
		671
		672	$obj->{_attachment}{$name} = undef;
		673	}
		674
		675	sub cf::attachable::attach {
		676	if (ref $_[0]) {
		677	_object_attach @_;
		678	} else {
		679	_attach shift->_attach_registry, @_;
		680	}
		681	_recalc_want;
		682	};
		683
		684	# all those should be optimised
		685	sub cf::attachable::detach {
		686	my ($obj, $name) = @_;
		687
		688	if (ref $obj) {
		689	delete $obj->{_attachment}{$name};
		690	reattach ($obj);
		691	} else {
		692	Carp::croak "cannot, currently, detach class attachments";
		693	}
		694	_recalc_want;
		695	};
		696
		697	sub cf::attachable::attached {
		698	my ($obj, $name) = @_;
		699
		700	exists $obj->{_attachment}{$name}
		701	}
		702
		703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		704	eval "#line " . __LINE__ . " 'cf.pm'
		705	sub cf::\L$klass\E::_attach_registry {
		706	(\\\@CB_$klass, KLASS_$klass)
		707	}
		708
		709	sub cf::\L$klass\E::attachment {
		710	my \$name = shift;
		711
		712	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		713	}
		714	";
		715	die if $@;
		716	}
		717
		718	our $override;
		719	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		720
		721	sub override {
		722	$override = 1;
		723	@invoke_results = ();
		724	}
		725
		726	sub do_invoke {
		727	my $event = shift;
		728	my $callbacks = shift;
		729
		730	@invoke_results = ();
		731
		732	local $override;
		733
		734	for (@$callbacks) {
		735	eval { &{$_->[1]} };
		736
		737	if ($@) {
		738	warn "$@";
		739	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		740	override;
		741	}
		742
		743	return 1 if $override;
		744	}
		745
		746	0
		747	}
		748
		749	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		750
		751	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		752
		753	Generate an object-specific event with the given arguments.
		754
		755	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		756	removed in future versions), and there is no public API to access override
		757	results (if you must, access C<@cf::invoke_results> directly).
		758
453	=back	759	=back
454		760
455	=cut	761	=cut
456
457	*cf::object::valid =
458	*cf::player::valid =
459	*cf::map::valid = \&cf::_valid;
460		762
461	#############################################################################	763	#############################################################################
462	# object support	764	# object support
463		765
464	sub instantiate {
465	my ($obj, $data) = @_;
466
467	$data = from_json $data;
468
469	for (@$data) {
470	my ($name, $args) = @$_;
471
472	$obj->attach ($name, %{$args || {} });
473	}
474	}
475
476	# basically do the same as instantiate, without calling instantiate
477	sub reattach {	766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
478	my ($obj) = @_;	768	my ($obj) = @_;
		769
		770	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		771
479	my $registry = $obj->registry;	772	my $registry = $obj->registry;
480		773
481	@$registry = ();	774	@$registry = ();
482		775
483	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	776	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
484		777
485	for my $name (keys %{ $obj->{_attachment} || {} }) {	778	for my $name (keys %{ $obj->{_attachment} || {} }) {
486	if (my $attach = $attachment{$name}) {	779	if (my $attach = $attachment{$name}) {
487	for (@$attach) {	780	for (@$attach) {
488	my ($klass, @attach) = @$_;	781	my ($klass, @attach) = @$_;
489	_attach @$registry, $klass, @attach;	782	_attach $registry, $klass, @attach;
490	}	783	}
491	} else {	784	} else {
492	warn "object uses attachment '$name' that is not available, postponing.\n";	785	warn "object uses attachment '$name' that is not available, postponing.\n";
493	}	786	}
494	}	787	}
495	}	788	}
496		789
497	sub object_freezer_save {	790	cf::attachable->attach (
498	my ($filename, $rdata, $objs) = @_;
499
500	if (length $$rdata) {
501	warn sprintf "saving %s (%d,%d)\n",
502	$filename, length $$rdata, scalar @$objs;
503
504	if (open my $fh, ">:raw", "$filename~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, $$rdata;
507	close $fh;
508
509	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
512	close $fh;
513	rename "$filename.pst~", "$filename.pst";
514	} else {
515	unlink "$filename.pst";
516	}
517
518	rename "$filename~", $filename;
519	} else {
520	warn "FATAL: $filename~: $!\n";
521	}
522	} else {
523	unlink $filename;
524	unlink "$filename.pst";
525	}
526	}
527
528	sub object_freezer_as_string {
529	my ($rdata, $objs) = @_;
530
531	use Data::Dumper;
532
533	"$$rdata\n" . Dumper $objs
534	}
535
536	sub object_thawer_load {
537	my ($filename) = @_;
538
539	local $/;
540
541	my $av;
542
543	#TODO: use sysread etc.
544	if (open my $data, "<:raw:perlio", $filename) {
545	$data = <$data>;
546	if (open my $pst, "<:raw:perlio", "$filename.pst") {
547	$av = eval { (Storable::thaw <$pst>)->{objs} };
548	}
549	return ($data, $av);
550	}
551
552	()
553	}
554
555	attach_to_objects
556	prio => -1000000,	791	prio => -1000000,
		792	on_instantiate => sub {
		793	my ($obj, $data) = @_;
		794
		795	$data = from_json $data;
		796
		797	for (@$data) {
		798	my ($name, $args) = @$_;
		799
		800	$obj->attach ($name, %{$args || {} });
		801	}
		802	},
		803	on_reattach => \&reattach,
557	on_clone => sub {	804	on_clone => sub {
558	my ($src, $dst) = @_;	805	my ($src, $dst) = @_;
559		806
560	@{$dst->registry} = @{$src->registry};	807	@{$dst->registry} = @{$src->registry};
561		808
562	%$dst = %$src;	809	%$dst = %$src;
563		810
564	%{$dst->{_attachment}} = %{$src->{_attachment}}	811	%{$dst->{_attachment}} = %{$src->{_attachment}}
565	if exists $src->{_attachment};	812	if exists $src->{_attachment};
566	},	813	},
567	;	814	);
		815
		816	sub object_freezer_save {
		817	my ($filename, $rdata, $objs) = @_;
		818
		819	sync_job {
		820	if (length $$rdata) {
		821	warn sprintf "saving %s (%d,%d)\n",
		822	$filename, length $$rdata, scalar @$objs;
		823
		824	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		825	chmod SAVE_MODE, $fh;
		826	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		827	aio_fsync $fh if $cf::USE_FSYNC;
		828	close $fh;
		829
		830	if (@$objs) {
		831	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		832	chmod SAVE_MODE, $fh;
		833	my $data = Storable::nfreeze { version => 1, objs => $objs };
		834	aio_write $fh, 0, (length $data), $data, 0;
		835	aio_fsync $fh if $cf::USE_FSYNC;
		836	close $fh;
		837	aio_rename "$filename.pst~", "$filename.pst";
		838	}
		839	} else {
		840	aio_unlink "$filename.pst";
		841	}
		842
		843	aio_rename "$filename~", $filename;
		844	} else {
		845	warn "FATAL: $filename~: $!\n";
		846	}
		847	} else {
		848	aio_unlink $filename;
		849	aio_unlink "$filename.pst";
		850	}
		851	}
		852	}
		853
		854	sub object_freezer_as_string {
		855	my ($rdata, $objs) = @_;
		856
		857	use Data::Dumper;
		858
		859	$$rdata . Dumper $objs
		860	}
		861
		862	sub object_thawer_load {
		863	my ($filename) = @_;
		864
		865	my ($data, $av);
		866
		867	(aio_load $filename, $data) >= 0
		868	or return;
		869
		870	unless (aio_stat "$filename.pst") {
		871	(aio_load "$filename.pst", $av) >= 0
		872	or return;
		873	$av = eval { (Storable::thaw $av)->{objs} };
		874	}
		875
		876	warn sprintf "loading %s (%d)\n",
		877	$filename, length $data, scalar @{$av || []};#d#
		878	return ($data, $av);
		879	}
568		880
569	#############################################################################	881	#############################################################################
570	# old plug-in events	882	# command handling &c
571		883
572	sub inject_event {	884	=item cf::register_command $name => \&callback($ob,$args);
573	my $extension = shift;
574	my $event_code = shift;
575		885
576	my $cb = $hook[$event_code]{$extension}	886	Register a callback for execution when the client sends the user command
577	or return;	887	$name.
578		888
579	&$cb	889	=cut
580	}
581
582	sub inject_global_event {
583	my $event = shift;
584
585	my $cb = $hook[$event]
586	or return;
587
588	List::Util::max map &$_, values %$cb
589	}
590
591	sub inject_command {
592	my ($name, $obj, $params) = @_;
593
594	for my $cmd (@{ $command{$name} }) {
595	$cmd->[1]->($obj, $params);
596	}
597
598	-1
599	}
600		890
601	sub register_command {	891	sub register_command {
602	my ($name, $time, $cb) = @_;	892	my ($name, $cb) = @_;
603		893
604	my $caller = caller;	894	my $caller = caller;
605	#warn "registering command '$name/$time' to '$caller'";	895	#warn "registering command '$name/$time' to '$caller'";
606		896
607	push @{ $command{$name} }, [$time, $cb, $caller];	897	push @{ $COMMAND{$name} }, [$caller, $cb];
608	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
609	}	898	}
		899
		900	=item cf::register_extcmd $name => \&callback($pl,$packet);
		901
		902	Register a callbackf ro execution when the client sends an extcmd packet.
		903
		904	If the callback returns something, it is sent back as if reply was being
		905	called.
		906
		907	=cut
610		908
611	sub register_extcmd {	909	sub register_extcmd {
612	my ($name, $cb) = @_;	910	my ($name, $cb) = @_;
613		911
614	my $caller = caller;	912	$EXTCMD{$name} = $cb;
615	#warn "registering extcmd '$name' to '$caller'";
616
617	$extcmd{$name} = [$cb, $caller];
618	}	913	}
619		914
620	sub register {	915	cf::player->attach (
621	my ($base, $pkg) = @_;	916	on_command => sub {
		917	my ($pl, $name, $params) = @_;
622		918
623	#TODO	919	my $cb = $COMMAND{$name}
624	}	920	or return;
		921
		922	for my $cmd (@$cb) {
		923	$cmd->[1]->($pl->ob, $params);
		924	}
		925
		926	cf::override;
		927	},
		928	on_extcmd => sub {
		929	my ($pl, $buf) = @_;
		930
		931	my $msg = eval { from_json $buf };
		932
		933	if (ref $msg) {
		934	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		935	if (my %reply = $cb->($pl, $msg)) {
		936	$pl->ext_reply ($msg->{msgid}, %reply);
		937	}
		938	}
		939	} else {
		940	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		941	}
		942
		943	cf::override;
		944	},
		945	);
625		946
626	sub load_extension {	947	sub load_extension {
627	my ($path) = @_;	948	my ($path) = @_;
628		949
629	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	950	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
630	my $base = $1;	951	my $base = $1;
631	my $pkg = $1;	952	my $pkg = $1;
632	$pkg =~ s/[^[:word:]]/_/g;	953	$pkg =~ s/[^[:word:]]/_/g;
633	$pkg = "ext::$pkg";	954	$pkg = "ext::$pkg";
634		955
635	warn "loading '$path' into '$pkg'\n";	956	warn "... loading '$path' into '$pkg'\n";
636		957
637	open my $fh, "<:utf8", $path	958	open my $fh, "<:utf8", $path
638	or die "$path: $!";	959	or die "$path: $!";
639		960
640	my $source =	961	my $source =
641	"package $pkg; use strict; use utf8;\n"	962	"package $pkg; use strict; use utf8;\n"
642	. "#line 1 \"$path\"\n{\n"	963	. "#line 1 \"$path\"\n{\n"
643	. (do { local $/; <$fh> })	964	. (do { local $/; <$fh> })
644	. "\n};\n1";	965	. "\n};\n1";
645		966
646	eval $source	967	unless (eval $source) {
647	or die "$path: $@";	968	my $msg = $@ ? "$path: $@\n"
648		969	: "extension disabled.\n";
649	push @exts, $pkg;	970	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
650	$ext_pkg{$base} = $pkg;	971	warn $@;
651		972	warn "mandatory extension failed to load, exiting.\n";
652	# no strict 'refs';	973	exit 1;
653	# @{"$pkg\::ISA"} = ext::;	974	}
654		975	die $@;
655	register $base, $pkg;
656	}
657
658	sub unload_extension {
659	my ($pkg) = @_;
660
661	warn "removing extension $pkg\n";
662
663	# remove hooks
664	#TODO
665	# for my $idx (0 .. $#PLUGIN_EVENT) {
666	# delete $hook[$idx]{$pkg};
667	# }	976	}
668		977
669	# remove commands	978	push @EXTS, $pkg;
670	for my $name (keys %command) {
671	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
672
673	if (@cb) {
674	$command{$name} = \@cb;
675	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
676	} else {
677	delete $command{$name};
678	delete $COMMAND{"$name\000"};
679	}
680	}
681
682	# remove extcmds
683	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
684	delete $extcmd{$name};
685	}
686
687	if (my $cb = $pkg->can ("unload")) {
688	eval {
689	$cb->($pkg);
690	1
691	} or warn "$pkg unloaded, but with errors: $@";
692	}
693
694	Symbol::delete_package $pkg;
695	}	979	}
696		980
697	sub load_extensions {	981	sub load_extensions {
698	my $LIBDIR = maps_directory "perl";
699
700	for my $ext (<$LIBDIR/*.ext>) {	982	for my $ext (<$LIBDIR/*.ext>) {
701	next unless -r $ext;	983	next unless -r $ext;
702	eval {	984	eval {
703	load_extension $ext;	985	load_extension $ext;
704	1	986	1
705	} or warn "$ext not loaded: $@";	987	} or warn "$ext not loaded: $@";
706	}	988	}
707	}	989	}
708		990
709	#############################################################################	991	#############################################################################
710	# extcmd framework, basically convert ext <msg>
711	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
712		992
713	attach_to_players	993	=head2 CORE EXTENSIONS
714	on_extcmd => sub {	994
		995	Functions and methods that extend core crossfire objects.
		996
		997	=cut
		998
		999	package cf::player;
		1000
		1001	use Coro::AIO;
		1002
		1003	=head3 cf::player
		1004
		1005	=over 4
		1006
		1007	=item cf::player::find $login
		1008
		1009	Returns the given player object, loading it if necessary (might block).
		1010
		1011	=cut
		1012
		1013	sub playerdir($) {
		1014	"$PLAYERDIR/"
		1015	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1016	}
		1017
		1018	sub path($) {
		1019	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1020
		1021	(playerdir $login) . "/playerdata"
		1022	}
		1023
		1024	sub find_active($) {
		1025	$cf::PLAYER{$_[0]}
		1026	and $cf::PLAYER{$_[0]}->active
		1027	and $cf::PLAYER{$_[0]}
		1028	}
		1029
		1030	sub exists($) {
		1031	my ($login) = @_;
		1032
		1033	$cf::PLAYER{$login}
		1034	or cf::sync_job { !aio_stat path $login }
		1035	}
		1036
		1037	sub find($) {
		1038	return $cf::PLAYER{$_[0]} || do {
		1039	my $login = $_[0];
		1040
		1041	my $guard = cf::lock_acquire "user_find:$login";
		1042
		1043	$cf::PLAYER{$_[0]} || do {
		1044	# rename old playerfiles to new ones
		1045	#TODO: remove when no longer required
		1046	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1047	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1048	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1049	aio_unlink +(playerdir $login) . "/$login.pl";
		1050
		1051	my $pl = load_pl path $login
		1052	or return;
		1053	$cf::PLAYER{$login} = $pl
		1054	}
		1055	}
		1056	}
		1057
		1058	sub save($) {
715	my ($pl, $buf) = @_;	1059	my ($pl) = @_;
716		1060
717	my $msg = eval { from_json $buf };	1061	return if $pl->{deny_save};
718		1062
719	if (ref $msg) {	1063	my $path = path $pl;
720	if (my $cb = $extcmd{$msg->{msgtype}}) {	1064	my $guard = cf::lock_acquire "user_save:$path";
721	if (my %reply = $cb->[0]->($pl, $msg)) {	1065
722	$pl->ext_reply ($msg->{msgid}, %reply);	1066	return if $pl->{deny_save};
723	}	1067
		1068	aio_mkdir playerdir $pl, 0770;
		1069	$pl->{last_save} = $cf::RUNTIME;
		1070
		1071	$pl->save_pl ($path);
		1072	Coro::cede;
		1073	}
		1074
		1075	sub new($) {
		1076	my ($login) = @_;
		1077
		1078	my $self = create;
		1079
		1080	$self->ob->name ($login);
		1081	$self->{deny_save} = 1;
		1082
		1083	$cf::PLAYER{$login} = $self;
		1084
		1085	$self
		1086	}
		1087
		1088	=item $pl->quit_character
		1089
		1090	Nukes the player without looking back. If logged in, the connection will
		1091	be destroyed. May block for a long time.
		1092
		1093	=cut
		1094
		1095	sub quit_character {
		1096	my ($pl) = @_;
		1097
		1098	my $name = $pl->ob->name;
		1099
		1100	$pl->{deny_save} = 1;
		1101	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1102
		1103	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1104	$pl->deactivate;
		1105	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1106	$pl->ns->destroy if $pl->ns;
		1107
		1108	my $path = playerdir $pl;
		1109	my $temp = "$path~$cf::RUNTIME~deleting~";
		1110	aio_rename $path, $temp;
		1111	delete $cf::PLAYER{$pl->ob->name};
		1112	$pl->destroy;
		1113
		1114	my $prefix = qr<^~\Q$name\E/>;
		1115
		1116	# nuke player maps
		1117	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1118
		1119	IO::AIO::aio_rmtree $temp;
		1120	}
		1121
		1122	=item $pl->kick
		1123
		1124	Kicks a player out of the game. This destroys the connection.
		1125
		1126	=cut
		1127
		1128	sub kick {
		1129	my ($pl, $kicker) = @_;
		1130
		1131	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1132	$pl->killer ("kicked");
		1133	$pl->ns->destroy;
		1134	}
		1135
		1136	=item cf::player::list_logins
		1137
		1138	Returns am arrayref of all valid playernames in the system, can take a
		1139	while and may block, so not sync_job-capable, ever.
		1140
		1141	=cut
		1142
		1143	sub list_logins {
		1144	my $dirs = aio_readdir $PLAYERDIR
		1145	or return [];
		1146
		1147	my @logins;
		1148
		1149	for my $login (@$dirs) {
		1150	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1151	aio_read $fh, 0, 512, my $buf, 0 or next;
		1152	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1153
		1154	utf8::decode $login;
		1155	push @logins, $login;
		1156	}
		1157
		1158	\@logins
		1159	}
		1160
		1161	=item $player->maps
		1162
		1163	Returns an arrayref of map paths that are private for this
		1164	player. May block.
		1165
		1166	=cut
		1167
		1168	sub maps($) {
		1169	my ($pl) = @_;
		1170
		1171	$pl = ref $pl ? $pl->ob->name : $pl;
		1172
		1173	my $files = aio_readdir playerdir $pl
		1174	or return;
		1175
		1176	my @paths;
		1177
		1178	for (@$files) {
		1179	utf8::decode $_;
		1180	next if /\.(?:pl|pst)$/;
		1181	next unless /^$PATH_SEP/o;
		1182
		1183	push @paths, cf::map::normalise "~$pl/$_";
		1184	}
		1185
		1186	\@paths
		1187	}
		1188
		1189	=item $player->ext_reply ($msgid, %msg)
		1190
		1191	Sends an ext reply to the player.
		1192
		1193	=cut
		1194
		1195	sub ext_reply($$%) {
		1196	my ($self, $id, %msg) = @_;
		1197
		1198	$msg{msgid} = $id;
		1199
		1200	$self->send ("ext " . cf::to_json \%msg);
		1201	}
		1202
		1203	=item $player->ext_event ($type, %msg)
		1204
		1205	Sends an ext event to the client.
		1206
		1207	=cut
		1208
		1209	sub ext_event($$%) {
		1210	my ($self, $type, %msg) = @_;
		1211
		1212	$self->ns->ext_event ($type, %msg);
		1213	}
		1214
		1215	=head3 cf::region
		1216
		1217	=over 4
		1218
		1219	=cut
		1220
		1221	package cf::region;
		1222
		1223	=item cf::region::find_by_path $path
		1224
		1225	Tries to decuce the probable region for a map knowing only its path.
		1226
		1227	=cut
		1228
		1229	sub find_by_path($) {
		1230	my ($path) = @_;
		1231
		1232	my ($match, $specificity);
		1233
		1234	for my $region (list) {
		1235	if ($region->match && $path =~ $region->match) {
		1236	($match, $specificity) = ($region, $region->specificity)
		1237	if $region->specificity > $specificity;
		1238	}
		1239	}
		1240
		1241	$match
		1242	}
		1243
		1244	=back
		1245
		1246	=head3 cf::map
		1247
		1248	=over 4
		1249
		1250	=cut
		1251
		1252	package cf::map;
		1253
		1254	use Fcntl;
		1255	use Coro::AIO;
		1256
		1257	use overload
		1258	'""' => \&as_string,
		1259	fallback => 1;
		1260
		1261	our $MAX_RESET = 3600;
		1262	our $DEFAULT_RESET = 3000;
		1263
		1264	sub generate_random_map {
		1265	my ($self, $rmp) = @_;
		1266	# mit "rum" bekleckern, nicht
		1267	$self->_create_random_map (
		1268	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1269	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1270	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1271	$rmp->{exit_on_final_map},
		1272	$rmp->{xsize}, $rmp->{ysize},
		1273	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1274	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1275	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1276	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1277	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1278	(cf::region::find $rmp->{region}), $rmp->{custom}
		1279	)
		1280	}
		1281
		1282	=item cf::map->register ($regex, $prio)
		1283
		1284	Register a handler for the map path matching the given regex at the
		1285	givne priority (higher is better, built-in handlers have priority 0, the
		1286	default).
		1287
		1288	=cut
		1289
		1290	sub register {
		1291	my (undef, $regex, $prio) = @_;
		1292	my $pkg = caller;
		1293
		1294	no strict;
		1295	push @{"$pkg\::ISA"}, __PACKAGE__;
		1296
		1297	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1298	}
		1299
		1300	# also paths starting with '/'
		1301	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1302
		1303	sub thawer_merge {
		1304	my ($self, $merge) = @_;
		1305
		1306	# we have to keep some variables in memory intact
		1307	local $self->{path};
		1308	local $self->{load_path};
		1309	local $self->{deny_save};
		1310	local $self->{deny_reset};
		1311
		1312	$self->SUPER::thawer_merge ($merge);
		1313	}
		1314
		1315	sub normalise {
		1316	my ($path, $base) = @_;
		1317
		1318	$path = "$path"; # make sure its a string
		1319
		1320	$path =~ s/\.map$//;
		1321
		1322	# map plan:
		1323	#
		1324	# /! non-realised random map exit (special hack!)
		1325	# {... are special paths that are not being touched
		1326	# ?xxx/... are special absolute paths
		1327	# ?random/... random maps
		1328	# /... normal maps
		1329	# ~user/... per-player map of a specific user
		1330
		1331	$path =~ s/$PATH_SEP/\//go;
		1332
		1333	# treat it as relative path if it starts with
		1334	# something that looks reasonable
		1335	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1336	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1337
		1338	$base =~ s{[^/]+/?$}{};
		1339	$path = "$base/$path";
		1340	}
		1341
		1342	for ($path) {
		1343	redo if s{//}{/};
		1344	redo if s{/\.?/}{/};
		1345	redo if s{/[^/]+/\.\./}{/};
		1346	}
		1347
		1348	$path
		1349	}
		1350
		1351	sub new_from_path {
		1352	my (undef, $path, $base) = @_;
		1353
		1354	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1355
		1356	$path = normalise $path, $base;
		1357
		1358	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1359	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1360	my $self = bless cf::map::new, $pkg;
		1361	$self->{path} = $path; $self->path ($path);
		1362	$self->init; # pass $1 etc.
		1363	return $self;
		1364	}
		1365	}
		1366
		1367	Carp::carp "unable to resolve path '$path' (base '$base').";
		1368	()
		1369	}
		1370
		1371	sub init {
		1372	my ($self) = @_;
		1373
		1374	$self
		1375	}
		1376
		1377	sub as_string {
		1378	my ($self) = @_;
		1379
		1380	"$self->{path}"
		1381	}
		1382
		1383	# the displayed name, this is a one way mapping
		1384	sub visible_name {
		1385	&as_string
		1386	}
		1387
		1388	# the original (read-only) location
		1389	sub load_path {
		1390	my ($self) = @_;
		1391
		1392	"$MAPDIR/$self->{path}.map"
		1393	}
		1394
		1395	# the temporary/swap location
		1396	sub save_path {
		1397	my ($self) = @_;
		1398
		1399	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1400	"$TMPDIR/$path.map"
		1401	}
		1402
		1403	# the unique path, undef == no special unique path
		1404	sub uniq_path {
		1405	my ($self) = @_;
		1406
		1407	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1408	"$UNIQUEDIR/$path"
		1409	}
		1410
		1411	# and all this just because we cannot iterate over
		1412	# all maps in C++...
		1413	sub change_all_map_light {
		1414	my ($change) = @_;
		1415
		1416	$_->change_map_light ($change)
		1417	for grep $_->outdoor, values %cf::MAP;
		1418	}
		1419
		1420	sub unlink_save {
		1421	my ($self) = @_;
		1422
		1423	utf8::encode (my $save = $self->save_path);
		1424	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1425	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1426	}
		1427
		1428	sub load_header_from($) {
		1429	my ($self, $path) = @_;
		1430
		1431	utf8::encode $path;
		1432	#aio_open $path, O_RDONLY, 0
		1433	# or return;
		1434
		1435	$self->_load_header ($path)
		1436	or return;
		1437
		1438	$self->{load_path} = $path;
		1439
		1440	1
		1441	}
		1442
		1443	sub load_header_orig {
		1444	my ($self) = @_;
		1445
		1446	$self->load_header_from ($self->load_path)
		1447	}
		1448
		1449	sub load_header_temp {
		1450	my ($self) = @_;
		1451
		1452	$self->load_header_from ($self->save_path)
		1453	}
		1454
		1455	sub prepare_temp {
		1456	my ($self) = @_;
		1457
		1458	$self->last_access ((delete $self->{last_access})
		1459	|| $cf::RUNTIME); #d#
		1460	# safety
		1461	$self->{instantiate_time} = $cf::RUNTIME
		1462	if $self->{instantiate_time} > $cf::RUNTIME;
		1463	}
		1464
		1465	sub prepare_orig {
		1466	my ($self) = @_;
		1467
		1468	$self->{load_original} = 1;
		1469	$self->{instantiate_time} = $cf::RUNTIME;
		1470	$self->last_access ($cf::RUNTIME);
		1471	$self->instantiate;
		1472	}
		1473
		1474	sub load_header {
		1475	my ($self) = @_;
		1476
		1477	if ($self->load_header_temp) {
		1478	$self->prepare_temp;
		1479	} else {
		1480	$self->load_header_orig
		1481	or return;
		1482	$self->prepare_orig;
		1483	}
		1484
		1485	$self->default_region (cf::region::find_by_path $self->{path})
		1486	unless $self->default_region;
		1487
		1488	1
		1489	}
		1490
		1491	sub find;
		1492	sub find {
		1493	my ($path, $origin) = @_;
		1494
		1495	$path = normalise $path, $origin && $origin->path;
		1496
		1497	cf::lock_wait "map_find:$path";
		1498
		1499	$cf::MAP{$path} || do {
		1500	my $guard = cf::lock_acquire "map_find:$path";
		1501	my $map = new_from_path cf::map $path
		1502	or return;
		1503
		1504	$map->{last_save} = $cf::RUNTIME;
		1505
		1506	$map->load_header
		1507	or return;
		1508
		1509	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1510	# doing this can freeze the server in a sync job, obviously
		1511	#$cf::WAIT_FOR_TICK->wait;
		1512	$map->reset;
		1513	undef $guard;
		1514	return find $path;
		1515	}
		1516
		1517	$cf::MAP{$path} = $map
		1518	}
		1519	}
		1520
		1521	sub pre_load { }
		1522	sub post_load { }
		1523
		1524	sub load {
		1525	my ($self) = @_;
		1526
		1527	local $self->{deny_reset} = 1; # loading can take a long time
		1528
		1529	my $path = $self->{path};
		1530
		1531	{
		1532	my $guard = cf::lock_acquire "map_load:$path";
		1533
		1534	return if $self->in_memory != cf::MAP_SWAPPED;
		1535
		1536	$self->in_memory (cf::MAP_LOADING);
		1537
		1538	$self->alloc;
		1539
		1540	$self->pre_load;
		1541	Coro::cede;
		1542
		1543	$self->_load_objects ($self->{load_path}, 1)
		1544	or return;
		1545
		1546	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1547	if delete $self->{load_original};
		1548
		1549	if (my $uniq = $self->uniq_path) {
		1550	utf8::encode $uniq;
		1551	if (aio_open $uniq, O_RDONLY, 0) {
		1552	$self->clear_unique_items;
		1553	$self->_load_objects ($uniq, 0);
724	}	1554	}
725	} else {
726	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
727	}	1555	}
728		1556
729	cf::override;	1557	Coro::cede;
		1558	# now do the right thing for maps
		1559	$self->link_multipart_objects;
		1560	$self->difficulty ($self->estimate_difficulty)
		1561	unless $self->difficulty;
		1562	Coro::cede;
		1563
		1564	unless ($self->{deny_activate}) {
		1565	$self->decay_objects;
		1566	$self->fix_auto_apply;
		1567	$self->update_buttons;
		1568	Coro::cede;
		1569	$self->set_darkness_map;
		1570	Coro::cede;
		1571	$self->activate;
		1572	}
		1573
		1574	$self->in_memory (cf::MAP_IN_MEMORY);
730	},	1575	}
731	;
732		1576
733	#############################################################################	1577	$self->post_load;
734	# load/save/clean perl data associated with a map	1578	}
735		1579
736	*cf::mapsupport::on_clean = sub {	1580	sub customise_for {
		1581	my ($self, $ob) = @_;
		1582
		1583	return find "~" . $ob->name . "/" . $self->{path}
		1584	if $self->per_player;
		1585
		1586	$self
		1587	}
		1588
		1589	# find and load all maps in the 3x3 area around a map
		1590	sub load_diag {
737	my ($map) = @_;	1591	my ($map) = @_;
738		1592
739	my $path = $map->tmpname;	1593	my @diag; # diagonal neighbours
740	defined $path or return;
741		1594
742	unlink "$path.pst";	1595	for (0 .. 3) {
743	};	1596	my $neigh = $map->tile_path ($_)
		1597	or next;
		1598	$neigh = find $neigh, $map
		1599	or next;
		1600	$neigh->load;
744		1601
745	attach_to_maps prio => -10000, package => cf::mapsupport::;	1602	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1603	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1604	}
746		1605
747	#############################################################################	1606	for (@diag) {
748	# load/save perl data associated with player->ob objects	1607	my $neigh = find @$_
749		1608	or next;
750	sub all_objects(@) {	1609	$neigh->load;
751	@_, map all_objects ($_->inv), @_	1610	}
752	}	1611	}
753		1612
754	# TODO: compatibility cruft, remove when no longer needed	1613	sub find_sync {
755	attach_to_players	1614	my ($path, $origin) = @_;
756	on_load => sub {
757	my ($pl, $path) = @_;
758		1615
759	for my $o (all_objects $pl->ob) {	1616	cf::sync_job { find $path, $origin }
760	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1617	}
761	$o->set_ob_key_value ("_perl_data");
762		1618
763	%$o = %{ Storable::thaw pack "H*", $value };	1619	sub do_load_sync {
		1620	my ($map) = @_;
		1621
		1622	cf::sync_job { $map->load };
		1623	}
		1624
		1625	our %MAP_PREFETCH;
		1626	our $MAP_PREFETCHER = undef;
		1627
		1628	sub find_async {
		1629	my ($path, $origin) = @_;
		1630
		1631	$path = normalise $path, $origin && $origin->{path};
		1632
		1633	if (my $map = $cf::MAP{$path}) {
		1634	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1635	}
		1636
		1637	undef $MAP_PREFETCH{$path};
		1638	$MAP_PREFETCHER ||= cf::async {
		1639	while (%MAP_PREFETCH) {
		1640	for my $path (keys %MAP_PREFETCH) {
		1641	my $map = find $path
		1642	or next;
		1643	$map->load;
		1644
		1645	delete $MAP_PREFETCH{$path};
764	}	1646	}
765	}	1647	}
		1648	undef $MAP_PREFETCHER;
		1649	};
		1650	$MAP_PREFETCHER->prio (6);
		1651
		1652	()
		1653	}
		1654
		1655	sub save {
		1656	my ($self) = @_;
		1657
		1658	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1659
		1660	$self->{last_save} = $cf::RUNTIME;
		1661
		1662	return unless $self->dirty;
		1663
		1664	my $save = $self->save_path; utf8::encode $save;
		1665	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1666
		1667	$self->{load_path} = $save;
		1668
		1669	return if $self->{deny_save};
		1670
		1671	local $self->{last_access} = $self->last_access;#d#
		1672
		1673	cf::async {
		1674	$_->contr->save for $self->players;
		1675	};
		1676
		1677	if ($uniq) {
		1678	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1679	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1680	} else {
		1681	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
766	},	1682	}
767	;	1683	}
768		1684
769	#############################################################################	1685	sub swap_out {
		1686	my ($self) = @_;
770		1687
771	=head2 CORE EXTENSIONS	1688	# save first because save cedes
		1689	$self->save;
772		1690
773	Functions and methods that extend core crossfire objects.	1691	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1692
		1693	return if $self->players;
		1694	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1695	return if $self->{deny_save};
		1696
		1697	$self->clear;
		1698	$self->in_memory (cf::MAP_SWAPPED);
		1699	}
		1700
		1701	sub reset_at {
		1702	my ($self) = @_;
		1703
		1704	# TODO: safety, remove and allow resettable per-player maps
		1705	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1706	return 1e99 if $self->{deny_reset};
		1707
		1708	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1709	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1710
		1711	$time + $to
		1712	}
		1713
		1714	sub should_reset {
		1715	my ($self) = @_;
		1716
		1717	$self->reset_at <= $cf::RUNTIME
		1718	}
		1719
		1720	sub reset {
		1721	my ($self) = @_;
		1722
		1723	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1724
		1725	return if $self->players;
		1726	return if $self->isa ("ext::map_per_player");#d#
		1727
		1728	warn "resetting map ", $self->path;#d#
		1729
		1730	$self->in_memory (cf::MAP_SWAPPED);
		1731
		1732	# need to save uniques path
		1733	unless ($self->{deny_save}) {
		1734	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1735
		1736	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1737	if $uniq;
		1738	}
		1739
		1740	delete $cf::MAP{$self->path};
		1741
		1742	$self->clear;
		1743
		1744	$_->clear_links_to ($self) for values %cf::MAP;
		1745
		1746	$self->unlink_save;
		1747	$self->destroy;
		1748	}
		1749
		1750	my $nuke_counter = "aaaa";
		1751
		1752	sub nuke {
		1753	my ($self) = @_;
		1754
		1755	delete $cf::MAP{$self->path};
		1756
		1757	$self->unlink_save;
		1758
		1759	bless $self, "cf::map";
		1760	delete $self->{deny_reset};
		1761	$self->{deny_save} = 1;
		1762	$self->reset_timeout (1);
		1763	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1764
		1765	$cf::MAP{$self->path} = $self;
		1766
		1767	$self->reset; # polite request, might not happen
		1768	}
		1769
		1770	=item cf::map::unique_maps
		1771
		1772	Returns an arrayref of paths of all shared maps that have
		1773	instantiated unique items. May block.
		1774
		1775	=cut
		1776
		1777	sub unique_maps() {
		1778	my $files = aio_readdir $UNIQUEDIR
		1779	or return;
		1780
		1781	my @paths;
		1782
		1783	for (@$files) {
		1784	utf8::decode $_;
		1785	next if /\.pst$/;
		1786	next unless /^$PATH_SEP/o;
		1787
		1788	push @paths, cf::map::normalise $_;
		1789	}
		1790
		1791	\@paths
		1792	}
		1793
		1794	package cf;
		1795
		1796	=back
		1797
		1798	=head3 cf::object
		1799
		1800	=cut
		1801
		1802	package cf::object;
774		1803
775	=over 4	1804	=over 4
776		1805
777	=item cf::player::exists $login	1806	=item $ob->inv_recursive
778		1807
779	Returns true when the given account exists.	1808	Returns the inventory of the object _and_ their inventories, recursively.
780		1809
781	=cut	1810	=cut
782		1811
783	sub cf::player::exists($) {	1812	sub inv_recursive_;
784	cf::player::find $_[0]	1813	sub inv_recursive_ {
785	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1814	map { $_, inv_recursive_ $_->inv } @_
786	}	1815	}
		1816
		1817	sub inv_recursive {
		1818	inv_recursive_ inv $_[0]
		1819	}
		1820
		1821	package cf;
		1822
		1823	=back
		1824
		1825	=head3 cf::object::player
		1826
		1827	=over 4
787		1828
788	=item $player_object->reply ($npc, $msg[, $flags])	1829	=item $player_object->reply ($npc, $msg[, $flags])
789		1830
790	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1831	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
791	can be C<undef>. Does the right thing when the player is currently in a	1832	can be C<undef>. Does the right thing when the player is currently in a
…		…
793		1834
794	=cut	1835	=cut
795		1836
796	# rough implementation of a future "reply" method that works	1837	# rough implementation of a future "reply" method that works
797	# with dialog boxes.	1838	# with dialog boxes.
		1839	#TODO: the first argument must go, split into a $npc->reply_to ( method
798	sub cf::object::player::reply($$$;$) {	1840	sub cf::object::player::reply($$$;$) {
799	my ($self, $npc, $msg, $flags) = @_;	1841	my ($self, $npc, $msg, $flags) = @_;
800		1842
801	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1843	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
802		1844
…		…
806	$msg = $npc->name . " says: $msg" if $npc;	1848	$msg = $npc->name . " says: $msg" if $npc;
807	$self->message ($msg, $flags);	1849	$self->message ($msg, $flags);
808	}	1850	}
809	}	1851	}
810		1852
811	=item $player->ext_reply ($msgid, $msgtype, %msg)
812
813	Sends an ext reply to the player.
814
815	=cut
816
817	sub cf::player::ext_reply($$$%) {
818	my ($self, $id, %msg) = @_;
819
820	$msg{msgid} = $id;
821
822	$self->send ("ext " . to_json \%msg);
823	}
824
825	=item $player_object->may ("access")	1853	=item $player_object->may ("access")
826		1854
827	Returns wether the given player is authorized to access resource "access"	1855	Returns wether the given player is authorized to access resource "access"
828	(e.g. "command_wizcast").	1856	(e.g. "command_wizcast").
829		1857
…		…
836	(ref $cf::CFG{"may_$access"}	1864	(ref $cf::CFG{"may_$access"}
837	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1865	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
838	: $cf::CFG{"may_$access"})	1866	: $cf::CFG{"may_$access"})
839	}	1867	}
840		1868
841	=cut	1869	=item $player_object->enter_link
842		1870
843	#############################################################################	1871	Freezes the player and moves him/her to a special map (C<{link}>).
		1872
		1873	The player should be reasonably safe there for short amounts of time. You
		1874	I<MUST> call C<leave_link> as soon as possible, though.
		1875
		1876	Will never block.
		1877
		1878	=item $player_object->leave_link ($map, $x, $y)
		1879
		1880	Moves the player out of the special C<{link}> map onto the specified
		1881	map. If the map is not valid (or omitted), the player will be moved back
		1882	to the location he/she was before the call to C<enter_link>, or, if that
		1883	fails, to the emergency map position.
		1884
		1885	Might block.
		1886
		1887	=cut
		1888
		1889	sub link_map {
		1890	unless ($LINK_MAP) {
		1891	$LINK_MAP = cf::map::find "{link}"
		1892	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1893	$LINK_MAP->load;
		1894	}
		1895
		1896	$LINK_MAP
		1897	}
		1898
		1899	sub cf::object::player::enter_link {
		1900	my ($self) = @_;
		1901
		1902	$self->deactivate_recursive;
		1903
		1904	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1905
		1906	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1907	if $self->map && $self->map->{path} ne "{link}";
		1908
		1909	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1910	}
		1911
		1912	sub cf::object::player::leave_link {
		1913	my ($self, $map, $x, $y) = @_;
		1914
		1915	return unless $self->contr->active;
		1916
		1917	my $link_pos = delete $self->{_link_pos};
		1918
		1919	unless ($map) {
		1920	# restore original map position
		1921	($map, $x, $y) = @{ $link_pos || [] };
		1922	$map = cf::map::find $map;
		1923
		1924	unless ($map) {
		1925	($map, $x, $y) = @$EMERGENCY_POSITION;
		1926	$map = cf::map::find $map
		1927	or die "FATAL: cannot load emergency map\n";
		1928	}
		1929	}
		1930
		1931	($x, $y) = (-1, -1)
		1932	unless (defined $x) && (defined $y);
		1933
		1934	# use -1 or undef as default coordinates, not 0, 0
		1935	($x, $y) = ($map->enter_x, $map->enter_y)
		1936	if $x <=0 && $y <= 0;
		1937
		1938	$map->load;
		1939	$map->load_diag;
		1940
		1941	return unless $self->contr->active;
		1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1945	$self->enter_map ($map, $x, $y);
		1946	}
		1947
		1948	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1949
		1950	Moves the player to the given map-path and coordinates by first freezing
		1951	her, loading and preparing them map, calling the provided $check callback
		1952	that has to return the map if sucecssful, and then unfreezes the player on
		1953	the new (success) or old (failed) map position.
		1954
		1955	=cut
		1956
		1957	our $GOTOGEN;
		1958
		1959	sub cf::object::player::goto {
		1960	my ($self, $path, $x, $y, $check) = @_;
		1961
		1962	# do generation counting so two concurrent goto's will be executed in-order
		1963	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1964
		1965	$self->enter_link;
		1966
		1967	(async {
		1968	my $map = eval {
		1969	my $map = cf::map::find $path;
		1970
		1971	if ($map) {
		1972	$map = $map->customise_for ($self);
		1973	$map = $check->($map) if $check && $map;
		1974	} else {
		1975	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1976	}
		1977
		1978	$map
		1979	};
		1980
		1981	if ($@) {
		1982	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1983	LOG llevError | logBacktrace, Carp::longmess $@;
		1984	}
		1985
		1986	if ($gen == $self->{_goto_generation}) {
		1987	delete $self->{_goto_generation};
		1988	$self->leave_link ($map, $x, $y);
		1989	}
		1990	})->prio (1);
		1991	}
		1992
		1993	=item $player_object->enter_exit ($exit_object)
		1994
		1995	=cut
		1996
		1997	sub parse_random_map_params {
		1998	my ($spec) = @_;
		1999
		2000	my $rmp = { # defaults
		2001	xsize => (cf::rndm 15, 40),
		2002	ysize => (cf::rndm 15, 40),
		2003	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2004	#layout => string,
		2005	};
		2006
		2007	for (split /\n/, $spec) {
		2008	my ($k, $v) = split /\s+/, $_, 2;
		2009
		2010	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2011	}
		2012
		2013	$rmp
		2014	}
		2015
		2016	sub prepare_random_map {
		2017	my ($exit) = @_;
		2018
		2019	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2020
		2021	# all this does is basically replace the /! path by
		2022	# a new random map path (?random/...) with a seed
		2023	# that depends on the exit object
		2024
		2025	my $rmp = parse_random_map_params $exit->msg;
		2026
		2027	if ($exit->map) {
		2028	$rmp->{region} = $exit->region->name;
		2029	$rmp->{origin_map} = $exit->map->path;
		2030	$rmp->{origin_x} = $exit->x;
		2031	$rmp->{origin_y} = $exit->y;
		2032	}
		2033
		2034	$rmp->{random_seed} ||= $exit->random_seed;
		2035
		2036	my $data = cf::to_json $rmp;
		2037	my $md5 = Digest::MD5::md5_hex $data;
		2038	my $meta = "$RANDOMDIR/$md5.meta";
		2039
		2040	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2041	aio_write $fh, 0, (length $data), $data, 0;
		2042	undef $fh;
		2043	aio_rename "$meta~", $meta;
		2044
		2045	$exit->slaying ("?random/$md5");
		2046	$exit->msg (undef);
		2047	}
		2048	}
		2049
		2050	sub cf::object::player::enter_exit {
		2051	my ($self, $exit) = @_;
		2052
		2053	return unless $self->type == cf::PLAYER;
		2054
		2055	if ($exit->slaying eq "/!") {
		2056	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2057	# the problem is that $exit might not survive long enough
		2058	# so it needs to be done right now, right here
		2059	cf::sync_job { prepare_random_map $exit };
		2060	}
		2061
		2062	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2063	my $hp = $exit->stats->hp;
		2064	my $sp = $exit->stats->sp;
		2065
		2066	$self->enter_link;
		2067
		2068	(async {
		2069	$self->deactivate_recursive; # just to be sure
		2070	unless (eval {
		2071	$self->goto ($slaying, $hp, $sp);
		2072
		2073	1;
		2074	}) {
		2075	$self->message ("Something went wrong deep within the crossfire server. "
		2076	. "I'll try to bring you back to the map you were before. "
		2077	. "Please report this to the dungeon master!",
		2078	cf::NDI_UNIQUE | cf::NDI_RED);
		2079
		2080	warn "ERROR in enter_exit: $@";
		2081	$self->leave_link;
		2082	}
		2083	})->prio (1);
		2084	}
		2085
		2086	=head3 cf::client
		2087
		2088	=over 4
		2089
		2090	=item $client->send_drawinfo ($text, $flags)
		2091
		2092	Sends a drawinfo packet to the client. Circumvents output buffering so
		2093	should not be used under normal circumstances.
		2094
		2095	=cut
		2096
		2097	sub cf::client::send_drawinfo {
		2098	my ($self, $text, $flags) = @_;
		2099
		2100	utf8::encode $text;
		2101	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2102	}
		2103
		2104	=item $client->ext_event ($type, %msg)
		2105
		2106	Sends an exti event to the client.
		2107
		2108	=cut
		2109
		2110	sub cf::client::ext_event($$%) {
		2111	my ($self, $type, %msg) = @_;
		2112
		2113	$msg{msgtype} = "event_$type";
		2114	$self->send_packet ("ext " . cf::to_json \%msg);
		2115	}
		2116
		2117	=item $success = $client->query ($flags, "text", \&cb)
		2118
		2119	Queues a query to the client, calling the given callback with
		2120	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2121	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2122
		2123	Queries can fail, so check the return code. Or don't, as queries will become
		2124	reliable at some point in the future.
		2125
		2126	=cut
		2127
		2128	sub cf::client::query {
		2129	my ($self, $flags, $text, $cb) = @_;
		2130
		2131	return unless $self->state == ST_PLAYING
		2132	|| $self->state == ST_SETUP
		2133	|| $self->state == ST_CUSTOM;
		2134
		2135	$self->state (ST_CUSTOM);
		2136
		2137	utf8::encode $text;
		2138	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2139
		2140	$self->send_packet ($self->{query_queue}[0][0])
		2141	if @{ $self->{query_queue} } == 1;
		2142	}
		2143
		2144	cf::client->attach (
		2145	on_reply => sub {
		2146	my ($ns, $msg) = @_;
		2147
		2148	# this weird shuffling is so that direct followup queries
		2149	# get handled first
		2150	my $queue = delete $ns->{query_queue}
		2151	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2152
		2153	(shift @$queue)->[1]->($msg);
		2154	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2155
		2156	push @{ $ns->{query_queue} }, @$queue;
		2157
		2158	if (@{ $ns->{query_queue} } == @$queue) {
		2159	if (@$queue) {
		2160	$ns->send_packet ($ns->{query_queue}[0][0]);
		2161	} else {
		2162	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2163	}
		2164	}
		2165	},
		2166	);
		2167
		2168	=item $client->async (\&cb)
		2169
		2170	Create a new coroutine, running the specified callback. The coroutine will
		2171	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2172	or loss of connection).
		2173
		2174	=cut
		2175
		2176	sub cf::client::async {
		2177	my ($self, $cb) = @_;
		2178
		2179	my $coro = &Coro::async ($cb);
		2180
		2181	$coro->on_destroy (sub {
		2182	delete $self->{_coro}{$coro+0};
		2183	});
		2184
		2185	$self->{_coro}{$coro+0} = $coro;
		2186
		2187	$coro
		2188	}
		2189
		2190	cf::client->attach (
		2191	on_destroy => sub {
		2192	my ($ns) = @_;
		2193
		2194	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2195	},
		2196	);
		2197
		2198	=back
		2199
844		2200
845	=head2 SAFE SCRIPTING	2201	=head2 SAFE SCRIPTING
846		2202
847	Functions that provide a safe environment to compile and execute	2203	Functions that provide a safe environment to compile and execute
848	snippets of perl code without them endangering the safety of the server	2204	snippets of perl code without them endangering the safety of the server
…		…
861		2217
862	# here we export the classes and methods available to script code	2218	# here we export the classes and methods available to script code
863		2219
864	=pod	2220	=pod
865		2221
866	The following fucntions and emthods are available within a safe environment:	2222	The following functions and methods are available within a safe environment:
867		2223
868	cf::object contr pay_amount pay_player	2224	cf::object contr pay_amount pay_player map
869	cf::object::player player	2225	cf::object::player player
870	cf::player peaceful	2226	cf::player peaceful
		2227	cf::map trigger
871		2228
872	=cut	2229	=cut
873		2230
874	for (	2231	for (
875	["cf::object" => qw(contr pay_amount pay_player)],	2232	["cf::object" => qw(contr pay_amount pay_player map)],
876	["cf::object::player" => qw(player)],	2233	["cf::object::player" => qw(player)],
877	["cf::player" => qw(peaceful)],	2234	["cf::player" => qw(peaceful)],
		2235	["cf::map" => qw(trigger)],
878	) {	2236	) {
879	no strict 'refs';	2237	no strict 'refs';
880	my ($pkg, @funs) = @$_;	2238	my ($pkg, @funs) = @$_;
881	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2239	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
882	for @funs;	2240	for @funs;
…		…
954	#############################################################################	2312	#############################################################################
955		2313
956	=head2 EXTENSION DATABASE SUPPORT	2314	=head2 EXTENSION DATABASE SUPPORT
957		2315
958	Crossfire maintains a very simple database for extension use. It can	2316	Crossfire maintains a very simple database for extension use. It can
959	currently store anything that can be serialised using Storable, which	2317	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
960	excludes objects.	2318	convert to/from binary).
961		2319
962	The parameter C<$family> should best start with the name of the extension	2320	The parameter C<$family> should best start with the name of the extension
963	using it, it should be unique.	2321	using it, it should be unique.
964		2322
965	=over 4	2323	=over 4
966		2324
967	=item $hashref = cf::db_get $family
968
969	Return a hashref for use by the extension C<$family>, which can be
970	modified. After modifications, you have to call C<cf::db_dirty> or
971	C<cf::db_sync>.
972
973	=item $value = cf::db_get $family => $key	2325	=item $value = cf::db_get $family => $key
974		2326
975	Returns a single value from the database	2327	Returns a single value from the database.
976
977	=item cf::db_put $family => $hashref
978
979	Stores the given family hashref into the database. Updates are delayed, if
980	you want the data to be synced to disk immediately, use C<cf::db_sync>.
981		2328
982	=item cf::db_put $family => $key => $value	2329	=item cf::db_put $family => $key => $value
983		2330
984	Stores the given C<$value> in the family hash. Updates are delayed, if you	2331	Stores the given C<$value> in the family.
985	want the data to be synced to disk immediately, use C<cf::db_sync>.
986
987	=item cf::db_dirty
988
989	Marks the database as dirty, to be updated at a later time.
990
991	=item cf::db_sync
992
993	Immediately write the database to disk I<if it is dirty>.
994		2332
995	=cut	2333	=cut
996		2334
997	our $DB;	2335	our $DB;
998		2336
999	{	2337	sub db_init {
1000	my $path = cf::localdir . "/database.pst";	2338	unless ($DB) {
		2339	$DB = BDB::db_create $DB_ENV;
1001		2340
1002	sub db_load() {	2341	cf::sync_job {
1003	warn "loading database $path\n";#d# remove later	2342	eval {
1004	$DB = stat $path ? Storable::retrieve $path : { };	2343	$DB->set_flags (BDB::CHKSUM);
1005	}
1006		2344
1007	my $pid;	2345	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1008		2346	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1009	sub db_save() {	2347	cf::cleanup "db_open(db): $!" if $!;
1010	warn "saving database $path\n";#d# remove later	2348	};
1011	waitpid $pid, 0 if $pid;	2349	cf::cleanup "db_open(db): $@" if $@;
1012	if (0 == ($pid = fork)) {
1013	$DB->{_meta}{version} = 1;
1014	Storable::nstore $DB, "$path~";
1015	rename "$path~", $path;
1016	cf::_exit 0 if defined $pid;
1017	}	2350	};
1018	}
1019
1020	my $dirty;
1021
1022	sub db_sync() {
1023	db_save if $dirty;
1024	undef $dirty;
1025	}
1026
1027	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1028	db_sync;
1029	});	2351	}
		2352	}
1030		2353
1031	sub db_dirty() {
1032	$dirty = 1;
1033	$idle->start;
1034	}
1035
1036	sub db_get($;$) {	2354	sub db_get($$) {
1037	@_ >= 2	2355	my $key = "$_[0]/$_[1]";
1038	? $DB->{$_[0]}{$_[1]}
1039	: ($DB->{$_[0]} ||= { })
1040	}
1041		2356
		2357	cf::sync_job {
		2358	BDB::db_get $DB, undef, $key, my $data;
		2359
		2360	$! ? ()
		2361	: $data
		2362	}
		2363	}
		2364
1042	sub db_put($$;$) {	2365	sub db_put($$$) {
1043	if (@_ >= 3) {	2366	BDB::dbreq_pri 4;
1044	$DB->{$_[0]}{$_[1]} = $_[2];	2367	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1045	} else {	2368	}
1046	$DB->{$_[0]} = $_[1];
1047	}
1048	db_dirty;
1049	}
1050		2369
1051	attach_global	2370	=item cf::cache $id => [$paths...], $processversion => $process
1052	prio => 10000,	2371
1053	on_cleanup => sub {	2372	Generic caching function that returns the value of the resource $id,
1054	db_sync;	2373	caching and regenerating as required.
		2374
		2375	This function can block.
		2376
		2377	=cut
		2378
		2379	sub cache {
		2380	my ($id, $src, $processversion, $process) = @_;
		2381
		2382	my $meta =
		2383	join "\x00",
		2384	$processversion,
		2385	map {
		2386	aio_stat $_
		2387	and Carp::croak "$_: $!";
		2388
		2389	($_, (stat _)[7,9])
		2390	} @$src;
		2391
		2392	my $dbmeta = db_get cache => "$id/meta";
		2393	if ($dbmeta ne $meta) {
		2394	# changed, we may need to process
		2395
		2396	my @data;
		2397	my $md5;
		2398
		2399	for (0 .. $#$src) {
		2400	0 <= aio_load $src->[$_], $data[$_]
		2401	or Carp::croak "$src->[$_]: $!";
1055	},	2402	}
		2403
		2404	# if processing is expensive, check
		2405	# checksum first
		2406	if (1) {
		2407	$md5 =
		2408	join "\x00",
		2409	$processversion,
		2410	map {
		2411	Coro::cede;
		2412	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2413	} 0.. $#$src;
		2414
		2415
		2416	my $dbmd5 = db_get cache => "$id/md5";
		2417	if ($dbmd5 eq $md5) {
		2418	db_put cache => "$id/meta", $meta;
		2419
		2420	return db_get cache => "$id/data";
		2421	}
		2422	}
		2423
		2424	my $t1 = Time::HiRes::time;
		2425	my $data = $process->(\@data);
		2426	my $t2 = Time::HiRes::time;
		2427
		2428	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2429
		2430	db_put cache => "$id/data", $data;
		2431	db_put cache => "$id/md5" , $md5;
		2432	db_put cache => "$id/meta", $meta;
		2433
		2434	return $data;
1056	;	2435	}
		2436
		2437	db_get cache => "$id/data"
		2438	}
		2439
		2440	=item fork_call { }, $args
		2441
		2442	Executes the given code block with the given arguments in a seperate
		2443	process, returning the results. Everything must be serialisable with
		2444	Coro::Storable. May, of course, block. Note that the executed sub may
		2445	never block itself or use any form of Event handling.
		2446
		2447	=cut
		2448
		2449	sub fork_call(&@) {
		2450	my ($cb, @args) = @_;
		2451
		2452	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2453	# or die "socketpair: $!";
		2454	pipe my $fh1, my $fh2
		2455	or die "pipe: $!";
		2456
		2457	if (my $pid = fork) {
		2458	close $fh2;
		2459
		2460	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2461	$res = Coro::Storable::thaw $res;
		2462
		2463	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2464
		2465	die $$res unless "ARRAY" eq ref $res;
		2466
		2467	return wantarray ? @$res : $res->[-1];
		2468	} else {
		2469	reset_signals;
		2470	local $SIG{__WARN__};
		2471	local $SIG{__DIE__};
		2472	eval {
		2473	close $fh1;
		2474
		2475	my @res = eval { $cb->(@args) };
		2476	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2477	};
		2478
		2479	warn $@ if $@;
		2480	_exit 0;
		2481	}
1057	}	2482	}
1058		2483
1059	#############################################################################	2484	#############################################################################
1060	# the server's main()	2485	# the server's init and main functions
		2486
		2487	sub load_facedata($) {
		2488	my ($path) = @_;
		2489
		2490	warn "loading facedata from $path\n";
		2491
		2492	my $facedata;
		2493	0 < aio_load $path, $facedata
		2494	or die "$path: $!";
		2495
		2496	$facedata = Coro::Storable::thaw $facedata;
		2497
		2498	$facedata->{version} == 2
		2499	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2500
		2501	{
		2502	my $faces = $facedata->{faceinfo};
		2503
		2504	while (my ($face, $info) = each %$faces) {
		2505	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2506	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2507	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2508	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2509	Coro::cede;
		2510	}
		2511
		2512	while (my ($face, $info) = each %$faces) {
		2513	next unless $info->{smooth};
		2514	my $idx = cf::face::find $face
		2515	or next;
		2516	if (my $smooth = cf::face::find $info->{smooth}) {
		2517	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2518	} else {
		2519	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2520	}
		2521	Coro::cede;
		2522	}
		2523	}
		2524
		2525	{
		2526	my $anims = $facedata->{animinfo};
		2527
		2528	while (my ($anim, $info) = each %$anims) {
		2529	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2530	Coro::cede;
		2531	}
		2532
		2533	cf::anim::invalidate_all; # d'oh
		2534	}
		2535
		2536	1
		2537	}
		2538
		2539	sub reload_regions {
		2540	load_resource_file "$MAPDIR/regions"
		2541	or die "unable to load regions file\n";
		2542	}
		2543
		2544	sub reload_facedata {
		2545	load_facedata "$DATADIR/facedata"
		2546	or die "unable to load facedata\n";
		2547	}
		2548
		2549	sub reload_archetypes {
		2550	load_resource_file "$DATADIR/archetypes"
		2551	or die "unable to load archetypes\n";
		2552	}
		2553
		2554	sub reload_treasures {
		2555	load_resource_file "$DATADIR/treasures"
		2556	or die "unable to load treasurelists\n";
		2557	}
		2558
		2559	sub reload_resources {
		2560	warn "reloading resource files...\n";
		2561
		2562	reload_regions;
		2563	reload_facedata;
		2564	reload_archetypes;
		2565	reload_treasures;
		2566
		2567	warn "finished reloading resource files\n";
		2568	}
		2569
		2570	sub init {
		2571	reload_resources;
		2572	}
1061		2573
1062	sub cfg_load {	2574	sub cfg_load {
1063	open my $fh, "<:utf8", cf::confdir . "/config"	2575	open my $fh, "<:utf8", "$CONFDIR/config"
1064	or return;	2576	or return;
1065		2577
1066	local $/;	2578	local $/;
1067	*CFG = YAML::Syck::Load <$fh>;	2579	*CFG = YAML::Syck::Load <$fh>;
		2580
		2581	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2582
		2583	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2584	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2585
		2586	if (exists $CFG{mlockall}) {
		2587	eval {
		2588	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2589	and die "WARNING: m(un)lockall failed: $!\n";
		2590	};
		2591	warn $@ if $@;
		2592	}
1068	}	2593	}
1069		2594
1070	sub main {	2595	sub main {
		2596	# we must not ever block the main coroutine
		2597	local $Coro::idle = sub {
		2598	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2599	(async {
		2600	Event::one_event;
		2601	})->prio (Coro::PRIO_MAX);
		2602	};
		2603
1071	cfg_load;	2604	cfg_load;
1072	db_load;	2605	db_init;
1073	load_extensions;	2606	load_extensions;
		2607
		2608	$TICK_WATCHER->start;
1074	Event::loop;	2609	Event::loop;
1075	}	2610	}
1076		2611
1077	#############################################################################	2612	#############################################################################
1078	# initialisation	2613	# initialisation and cleanup
1079		2614
1080	sub _perl_reload(&) {	2615	# install some emergency cleanup handlers
		2616	BEGIN {
		2617	for my $signal (qw(INT HUP TERM)) {
		2618	Event->signal (
		2619	reentrant => 0,
		2620	data => WF_AUTOCANCEL,
		2621	signal => $signal,
		2622	prio => 0,
		2623	cb => sub {
		2624	cf::cleanup "SIG$signal";
		2625	},
		2626	);
		2627	}
		2628	}
		2629
		2630	sub emergency_save() {
		2631	my $freeze_guard = cf::freeze_mainloop;
		2632
		2633	warn "enter emergency perl save\n";
		2634
		2635	cf::sync_job {
		2636	# use a peculiar iteration method to avoid tripping on perl
		2637	# refcount bugs in for. also avoids problems with players
		2638	# and maps saved/destroyed asynchronously.
		2639	warn "begin emergency player save\n";
		2640	for my $login (keys %cf::PLAYER) {
		2641	my $pl = $cf::PLAYER{$login} or next;
		2642	$pl->valid or next;
		2643	$pl->save;
		2644	}
		2645	warn "end emergency player save\n";
		2646
		2647	warn "begin emergency map save\n";
		2648	for my $path (keys %cf::MAP) {
		2649	my $map = $cf::MAP{$path} or next;
		2650	$map->valid or next;
		2651	$map->save;
		2652	}
		2653	warn "end emergency map save\n";
		2654
		2655	warn "begin emergency database checkpoint\n";
		2656	BDB::db_env_txn_checkpoint $DB_ENV;
		2657	warn "end emergency database checkpoint\n";
		2658	};
		2659
		2660	warn "leave emergency perl save\n";
		2661	}
		2662
		2663	sub post_cleanup {
1081	my ($msg) = @_;	2664	my ($make_core) = @_;
1082		2665
1083	$msg->("reloading...");	2666	warn Carp::longmess "post_cleanup backtrace"
		2667	if $make_core;
		2668	}
1084		2669
1085	eval {	2670	sub do_reload_perl() {
1086	# cancel all watchers	2671	# can/must only be called in main
		2672	if ($Coro::current != $Coro::main) {
		2673	warn "can only reload from main coroutine";
		2674	return;
		2675	}
		2676
		2677	warn "reloading...";
		2678
		2679	warn "entering sync_job";
		2680
		2681	cf::sync_job {
		2682	cf::write_runtime; # external watchdog should not bark
		2683	cf::emergency_save;
		2684	cf::write_runtime; # external watchdog should not bark
		2685
		2686	warn "syncing database to disk";
		2687	BDB::db_env_txn_checkpoint $DB_ENV;
		2688
		2689	# if anything goes wrong in here, we should simply crash as we already saved
		2690
		2691	warn "cancelling all WF_AUTOCANCEL watchers";
1087	$_->cancel for Event::all_watchers;	2692	for (Event::all_watchers) {
		2693	$_->cancel if $_->data & WF_AUTOCANCEL;
		2694	}
1088		2695
1089	# unload all extensions	2696	warn "flushing outstanding aio requests";
1090	for (@exts) {	2697	for (;;) {
1091	$msg->("unloading <$_>");	2698	BDB::flush;
1092	unload_extension $_;	2699	IO::AIO::flush;
		2700	Coro::cede;
		2701	last unless IO::AIO::nreqs || BDB::nreqs;
		2702	warn "iterate...";
		2703	}
		2704
		2705	++$RELOAD;
		2706
		2707	warn "cancelling all extension coros";
		2708	$_->cancel for values %EXT_CORO;
		2709	%EXT_CORO = ();
		2710
		2711	warn "removing commands";
		2712	%COMMAND = ();
		2713
		2714	warn "removing ext commands";
		2715	%EXTCMD = ();
		2716
		2717	warn "unloading/nuking all extensions";
		2718	for my $pkg (@EXTS) {
		2719	warn "... unloading $pkg";
		2720
		2721	if (my $cb = $pkg->can ("unload")) {
		2722	eval {
		2723	$cb->($pkg);
		2724	1
		2725	} or warn "$pkg unloaded, but with errors: $@";
1093	}	2726	}
1094		2727
		2728	warn "... nuking $pkg";
		2729	Symbol::delete_package $pkg;
		2730	}
		2731
1095	# unload all modules loaded from $LIBDIR	2732	warn "unloading all perl modules loaded from $LIBDIR";
1096	while (my ($k, $v) = each %INC) {	2733	while (my ($k, $v) = each %INC) {
1097	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2734	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1098		2735
1099	$msg->("removing <$k>");	2736	warn "... unloading $k";
1100	delete $INC{$k};	2737	delete $INC{$k};
1101		2738
1102	$k =~ s/\.pm$//;	2739	$k =~ s/\.pm$//;
1103	$k =~ s/\//::/g;	2740	$k =~ s/\//::/g;
1104		2741
…		…
1107	}	2744	}
1108		2745
1109	Symbol::delete_package $k;	2746	Symbol::delete_package $k;
1110	}	2747	}
1111		2748
1112	# sync database to disk
1113	cf::db_sync;
1114
1115	# get rid of safe::, as good as possible	2749	warn "getting rid of safe::, as good as possible";
1116	Symbol::delete_package "safe::$_"	2750	Symbol::delete_package "safe::$_"
1117	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2751	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1118		2752
1119	# remove register_script_function callbacks
1120	# TODO
1121
1122	# unload cf.pm "a bit"	2753	warn "unloading cf.pm \"a bit\"";
1123	delete $INC{"cf.pm"};	2754	delete $INC{"cf.pm"};
		2755	delete $INC{"cf/pod.pm"};
1124		2756
1125	# don't, removes xs symbols, too,	2757	# don't, removes xs symbols, too,
1126	# and global variables created in xs	2758	# and global variables created in xs
1127	#Symbol::delete_package __PACKAGE__;	2759	#Symbol::delete_package __PACKAGE__;
1128		2760
1129	# reload cf.pm	2761	warn "unload completed, starting to reload now";
		2762
1130	$msg->("reloading cf.pm");	2763	warn "reloading cf.pm";
1131	require cf;	2764	require cf;
		2765	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1132		2766
1133	# load config and database again	2767	warn "loading config and database again";
1134	cf::cfg_load;	2768	cf::cfg_load;
1135	cf::db_load;
1136		2769
1137	# load extensions	2770	warn "loading extensions";
1138	$msg->("load extensions");
1139	cf::load_extensions;	2771	cf::load_extensions;
1140		2772
1141	# reattach attachments to objects	2773	warn "reattaching attachments to objects/players";
1142	$msg->("reattach");	2774	_global_reattach; # objects, sockets
1143	_global_reattach;	2775	warn "reattaching attachments to maps";
		2776	reattach $_ for values %MAP;
		2777	warn "reattaching attachments to players";
		2778	reattach $_ for values %PLAYER;
		2779
		2780	warn "leaving sync_job";
		2781
		2782	1
		2783	} or do {
		2784	warn $@;
		2785	warn "error while reloading, exiting.";
		2786	exit 1;
1144	};	2787	};
1145	$msg->($@) if $@;
1146		2788
1147	$msg->("reloaded");	2789	warn "reloaded";
1148	};	2790	};
1149		2791
1150	sub perl_reload() {	2792	our $RELOAD_WATCHER; # used only during reload
1151	_perl_reload {	2793
1152	warn $_[0];	2794	sub reload_perl() {
1153	print "$_[0]\n";	2795	# doing reload synchronously and two reloads happen back-to-back,
		2796	# coro crashes during coro_state_free->destroy here.
		2797
		2798	$RELOAD_WATCHER ||= Event->timer (
		2799	reentrant => 0,
		2800	after => 0,
		2801	data => WF_AUTOCANCEL,
		2802	cb => sub {
		2803	do_reload_perl;
		2804	undef $RELOAD_WATCHER;
		2805	},
1154	};	2806	);
1155	}	2807	}
1156		2808
1157	register_command "perl-reload", 0, sub {	2809	register_command "reload" => sub {
1158	my ($who, $arg) = @_;	2810	my ($who, $arg) = @_;
1159		2811
1160	if ($who->flag (FLAG_WIZ)) {	2812	if ($who->flag (FLAG_WIZ)) {
1161	_perl_reload {	2813	$who->message ("reloading server.");
1162	warn $_[0];	2814	async { reload_perl };
1163	$who->message ($_[0]);	2815	}
		2816	};
		2817
		2818	unshift @INC, $LIBDIR;
		2819
		2820	my $bug_warning = 0;
		2821
		2822	our @WAIT_FOR_TICK;
		2823	our @WAIT_FOR_TICK_BEGIN;
		2824
		2825	sub wait_for_tick {
		2826	return unless $TICK_WATCHER->is_active;
		2827	return if $Coro::current == $Coro::main;
		2828
		2829	my $signal = new Coro::Signal;
		2830	push @WAIT_FOR_TICK, $signal;
		2831	$signal->wait;
		2832	}
		2833
		2834	sub wait_for_tick_begin {
		2835	return unless $TICK_WATCHER->is_active;
		2836	return if $Coro::current == $Coro::main;
		2837
		2838	my $signal = new Coro::Signal;
		2839	push @WAIT_FOR_TICK_BEGIN, $signal;
		2840	$signal->wait;
		2841	}
		2842
		2843	my $min = 1e6;#d#
		2844	my $avg = 10;
		2845	$TICK_WATCHER = Event->timer (
		2846	reentrant => 0,
		2847	parked => 1,
		2848	prio => 0,
		2849	at => $NEXT_TICK || $TICK,
		2850	data => WF_AUTOCANCEL,
		2851	cb => sub {
		2852	if ($Coro::current != $Coro::main) {
		2853	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2854	unless ++$bug_warning > 10;
		2855	return;
		2856	}
		2857
		2858	$NOW = $tick_start = Event::time;
		2859
		2860	cf::server_tick; # one server iteration
		2861
		2862	0 && sync_job {#d#
		2863	for(1..10) {
		2864	my $t = Event::time;
		2865	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2866	or die;
		2867
		2868	$map->width (50);
		2869	$map->height (50);
		2870	$map->alloc;
		2871	$map->_load_objects ("/tmp/x.map", 1);
		2872	my $t = Event::time - $t;
		2873
		2874	#next unless $t < 0.0013;#d#
		2875	if ($t < $min) {
		2876	$min = $t;
		2877	}
		2878	$avg = $avg * 0.99 + $t * 0.01;
		2879	}
		2880	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2881	exit 0;
		2882	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1164	};	2883	};
1165	}
1166	};
1167		2884
1168	register "<global>", __PACKAGE__;	2885	$RUNTIME += $TICK;
1169
1170	unshift @INC, $LIBDIR;
1171
1172	$TICK_WATCHER = Event->timer (
1173	prio => 1,
1174	async => 1,
1175	at => $NEXT_TICK || 1,
1176	cb => sub {
1177	cf::server_tick; # one server iteration
1178
1179	my $NOW = Event::time;
1180	$NEXT_TICK += $TICK;	2886	$NEXT_TICK += $TICK;
		2887
		2888	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2889	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2890	Coro::async_pool {
		2891	write_runtime
		2892	or warn "ERROR: unable to write runtime file: $!";
		2893	};
		2894	}
		2895
		2896	# my $AFTER = Event::time;
		2897	# warn $AFTER - $NOW;#d#
		2898
		2899	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2900	$sig->send;
		2901	}
		2902	while (my $sig = shift @WAIT_FOR_TICK) {
		2903	$sig->send;
		2904	}
		2905
		2906	$NOW = Event::time;
1181		2907
1182	# if we are delayed by four ticks or more, skip them all	2908	# if we are delayed by four ticks or more, skip them all
1183	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2909	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1184		2910
1185	$TICK_WATCHER->at ($NEXT_TICK);	2911	$TICK_WATCHER->at ($NEXT_TICK);
1186	$TICK_WATCHER->start;	2912	$TICK_WATCHER->start;
		2913
		2914	$LOAD = ($NOW - $tick_start) / $TICK;
		2915	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2916
		2917	_post_tick;
		2918
		2919
1187	},	2920	},
1188	);	2921	);
1189		2922
		2923	{
		2924	BDB::max_poll_time $TICK * 0.1;
		2925	$BDB_POLL_WATCHER = Event->io (
		2926	reentrant => 0,
		2927	fd => BDB::poll_fileno,
		2928	poll => 'r',
		2929	prio => 0,
		2930	data => WF_AUTOCANCEL,
		2931	cb => \&BDB::poll_cb,
		2932	);
		2933	BDB::min_parallel 8;
		2934
		2935	BDB::set_sync_prepare {
		2936	my $status;
		2937	my $current = $Coro::current;
		2938	(
		2939	sub {
		2940	$status = $!;
		2941	$current->ready; undef $current;
		2942	},
		2943	sub {
		2944	Coro::schedule while defined $current;
		2945	$! = $status;
		2946	},
		2947	)
		2948	};
		2949
		2950	unless ($DB_ENV) {
		2951	$DB_ENV = BDB::db_env_create;
		2952
		2953	cf::sync_job {
		2954	eval {
		2955	BDB::db_env_open
		2956	$DB_ENV,
		2957	$BDBDIR,
		2958	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2959	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2960	0666;
		2961
		2962	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2963
		2964	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2965	$DB_ENV->set_lk_detect;
		2966	};
		2967
		2968	cf::cleanup "db_env_open(db): $@" if $@;
		2969	};
		2970	}
		2971	}
		2972
		2973	{
		2974	IO::AIO::min_parallel 8;
		2975
		2976	undef $Coro::AIO::WATCHER;
1190	IO::AIO::max_poll_time $TICK * 0.2;	2977	IO::AIO::max_poll_time $TICK * 0.1;
1191		2978	$AIO_POLL_WATCHER = Event->io (
1192	Event->io (fd => IO::AIO::poll_fileno,	2979	reentrant => 0,
		2980	data => WF_AUTOCANCEL,
		2981	fd => IO::AIO::poll_fileno,
1193	poll => 'r',	2982	poll => 'r',
1194	prio => 5,	2983	prio => 6,
1195	cb => \&IO::AIO::poll_cb);	2984	cb => \&IO::AIO::poll_cb,
		2985	);
		2986	}
		2987
		2988	my $_log_backtrace;
		2989
		2990	sub _log_backtrace {
		2991	my ($msg, @addr) = @_;
		2992
		2993	$msg =~ s/\n//;
		2994
		2995	# limit the # of concurrent backtraces
		2996	if ($_log_backtrace < 2) {
		2997	++$_log_backtrace;
		2998	async {
		2999	my @bt = fork_call {
		3000	@addr = map { sprintf "%x", $_ } @addr;
		3001	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3002	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3003	or die "addr2line: $!";
		3004
		3005	my @funcs;
		3006	my @res = <$fh>;
		3007	chomp for @res;
		3008	while (@res) {
		3009	my ($func, $line) = splice @res, 0, 2, ();
		3010	push @funcs, "[$func] $line";
		3011	}
		3012
		3013	@funcs
		3014	};
		3015
		3016	LOG llevInfo, "[ABT] $msg\n";
		3017	LOG llevInfo, "[ABT] $_\n" for @bt;
		3018	--$_log_backtrace;
		3019	};
		3020	} else {
		3021	LOG llevInfo, "[ABT] $msg\n";
		3022	LOG llevInfo, "[ABT] [suppressed]\n";
		3023	}
		3024	}
		3025
		3026	# load additional modules
		3027	use cf::pod;
		3028
		3029	END { cf::emergency_save }
1196		3030
1197	1	3031	1
1198		3032

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