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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.75 by root, Mon Oct 2 00:22:01 2006 UTC vs.
Revision 1.273 by root, Mon Jun 4 12:19:08 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
		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;
10	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
11	use Time::HiRes;	31	use Time::HiRes;
12	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
13	$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
14		41
15	# 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?
16	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
17		44
18	use strict;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		46
20	_init_vars;	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
21		48
22	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
23	our @EVENT;	58	our @EVENT;
24	our $LIBDIR = maps_directory "perl";
25		59
26	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(!)
27	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
28	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;
29		82
30	our %CFG;	83	our %CFG;
31		84
		85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		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;
		115
32	#############################################################################	116	#############################################################################
33		117
34	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
35		119
36	=over 4	120	=over 4
37		121
38	=item $cf::LIBDIR	122	=item $cf::UPTIME
39		123
40	The perl library directory, where extensions and cf-specific modules can	124	The timestamp of the server start (so not actually an uptime).
41	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.
42		143
43	=item $cf::TICK	144	=item $cf::TICK
44		145
45	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.
46		157
47	=item %cf::CFG	158	=item %cf::CFG
48		159
49	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
50	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.
51		168
52	=back	169	=back
53		170
54	=cut	171	=cut
55		172
56	BEGIN {	173	BEGIN {
57	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
58	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
59	$msg .= "\n"	177	$msg .= "\n"
60	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
61		179
62	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
63	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
64	};	184	};
65	}	185	}
66		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';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
67	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
68		194
69	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
70	# within the Safe compartment.	196	# within the Safe compartment.
71	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	197	for my $pkg (qw(
		198	cf::global cf::attachable
		199	cf::object cf::object::player
		200	cf::client cf::player
		201	cf::arch cf::living
		202	cf::map cf::party cf::region
		203	)) {
72	no strict 'refs';	204	no strict 'refs';
73	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	205	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
74	}	206	}
75		207
76	$Event::DIED = sub {	208	$Event::DIED = sub {
77	warn "error in event callback: @_";	209	warn "error in event callback: @_";
78	};	210	};
79		211
80	my %ext_pkg;
81	my @exts;
82	my @hook;
83	my %command;
84	my %extcmd;
85
86	=head2 UTILITY FUNCTIONS	212	=head2 UTILITY FUNCTIONS
87		213
88	=over 4	214	=over 4
89		215
90	=cut	216	=item dumpval $ref
91		217
		218	=cut
		219
		220	sub dumpval {
		221	eval {
		222	local $SIG{__DIE__};
		223	my $d;
		224	if (1) {
		225	$d = new Data::Dumper([$_[0]], ["*var"]);
		226	$d->Terse(1);
		227	$d->Indent(2);
		228	$d->Quotekeys(0);
		229	$d->Useqq(1);
		230	#$d->Bless(...);
		231	$d->Seen($_[1]) if @_ > 1;
		232	$d = $d->Dump();
		233	}
		234	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		235	$d
		236	} || "[unable to dump $_[0]: '$@']";
		237	}
		238
92	use JSON::Syck (); # TODO# replace by JSON::PC once working	239	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
93		240
94	=item $ref = cf::from_json $json	241	=item $ref = cf::from_json $json
95		242
96	Converts a JSON string into the corresponding perl data structure.	243	Converts a JSON string into the corresponding perl data structure.
97		244
98	=cut
99
100	sub from_json($) {
101	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
102	JSON::Syck::Load $_[0]
103	}
104
105	=item $json = cf::to_json $ref	245	=item $json = cf::to_json $ref
106		246
107	Converts a perl data structure into its JSON representation.	247	Converts a perl data structure into its JSON representation.
108		248
109	=cut	249	=item cf::lock_wait $string
110		250
111	sub to_json($) {	251	Wait until the given lock is available. See cf::lock_acquire.
112	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	252
113	JSON::Syck::Dump $_[0]	253	=item my $lock = cf::lock_acquire $string
		254
		255	Wait until the given lock is available and then acquires it and returns
		256	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		257	for example when the coroutine gets canceled), the lock is automatically
		258	returned.
		259
		260	Lock names should begin with a unique identifier (for example, cf::map::find
		261	uses map_find and cf::map::load uses map_load).
		262
		263	=item $locked = cf::lock_active $string
		264
		265	Return true if the lock is currently active, i.e. somebody has locked it.
		266
		267	=cut
		268
		269	our %LOCK;
		270
		271	sub lock_wait($) {
		272	my ($key) = @_;
		273
		274	# wait for lock, if any
		275	while ($LOCK{$key}) {
		276	push @{ $LOCK{$key} }, $Coro::current;
		277	Coro::schedule;
		278	}
		279	}
		280
		281	sub lock_acquire($) {
		282	my ($key) = @_;
		283
		284	# wait, to be sure we are not locked
		285	lock_wait $key;
		286
		287	$LOCK{$key} = [];
		288
		289	Coro::guard {
		290	# wake up all waiters, to be on the safe side
		291	$_->ready for @{ delete $LOCK{$key} };
		292	}
		293	}
		294
		295	sub lock_active($) {
		296	my ($key) = @_;
		297
		298	! ! $LOCK{$key}
		299	}
		300
		301	sub freeze_mainloop {
		302	return unless $TICK_WATCHER->is_active;
		303
		304	my $guard = Coro::guard {
		305	$TICK_WATCHER->start;
		306	};
		307	$TICK_WATCHER->stop;
		308	$guard
		309	}
		310
		311	=item cf::async { BLOCK }
		312
		313	Currently the same as Coro::async_pool, meaning you cannot use
		314	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		315	thing you are allowed to do is call C<prio> on it.
		316
		317	=cut
		318
		319	BEGIN { *async = \&Coro::async_pool }
		320
		321	=item cf::sync_job { BLOCK }
		322
		323	The design of crossfire+ requires that the main coro ($Coro::main) is
		324	always able to handle events or runnable, as crossfire+ is only partly
		325	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		326
		327	If it must be done, put the blocking parts into C<sync_job>. This will run
		328	the given BLOCK in another coroutine while waiting for the result. The
		329	server will be frozen during this time, so the block should either finish
		330	fast or be very important.
		331
		332	=cut
		333
		334	sub sync_job(&) {
		335	my ($job) = @_;
		336
		337	if ($Coro::current == $Coro::main) {
		338	my $time = Event::time;
		339
		340	# this is the main coro, too bad, we have to block
		341	# till the operation succeeds, freezing the server :/
		342
		343	# TODO: use suspend/resume instead
		344	# (but this is cancel-safe)
		345	my $freeze_guard = freeze_mainloop;
		346
		347	my $busy = 1;
		348	my @res;
		349
		350	(async {
		351	@res = eval { $job->() };
		352	warn $@ if $@;
		353	undef $busy;
		354	})->prio (Coro::PRIO_MAX);
		355
		356	while ($busy) {
		357	Coro::cede or Event::one_event;
		358	}
		359
		360	$time = Event::time - $time;
		361
		362	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		363	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		364
		365	$tick_start += $time; # do not account sync jobs to server load
		366
		367	wantarray ? @res : $res[0]
		368	} else {
		369	# we are in another coroutine, how wonderful, everything just works
		370
		371	$job->()
		372	}
		373	}
		374
		375	=item $coro = cf::async_ext { BLOCK }
		376
		377	Like async, but this coro is automatically being canceled when the
		378	extension calling this is being unloaded.
		379
		380	=cut
		381
		382	sub async_ext(&) {
		383	my $cb = shift;
		384
		385	my $coro = &Coro::async ($cb);
		386
		387	$coro->on_destroy (sub {
		388	delete $EXT_CORO{$coro+0};
		389	});
		390	$EXT_CORO{$coro+0} = $coro;
		391
		392	$coro
		393	}
		394
		395	sub write_runtime {
		396	my $runtime = "$LOCALDIR/runtime";
		397
		398	# first touch the runtime file to show we are still running:
		399	# the fsync below can take a very very long time.
		400
		401	IO::AIO::aio_utime $runtime, undef, undef;
		402
		403	my $guard = cf::lock_acquire "write_runtime";
		404
		405	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		406	or return;
		407
		408	my $value = $cf::RUNTIME + 90 + 10;
		409	# 10 is the runtime save interval, for a monotonic clock
		410	# 60 allows for the watchdog to kill the server.
		411
		412	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		413	and return;
		414
		415	# always fsync - this file is important
		416	aio_fsync $fh
		417	and return;
		418
		419	# touch it again to show we are up-to-date
		420	aio_utime $fh, undef, undef;
		421
		422	close $fh
		423	or return;
		424
		425	aio_rename "$runtime~", $runtime
		426	and return;
		427
		428	warn "runtime file written.\n";#d#
		429
		430	1
		431	}
		432
		433	=item cf::datalog type => key => value, ...
		434
		435	Log a datalog packet of the given type with the given key-value pairs.
		436
		437	=cut
		438
		439	sub datalog($@) {
		440	my ($type, %kv) = @_;
		441	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
114	}	442	}
115		443
116	=back	444	=back
117		445
118	=cut	446	=cut
119		447
120	#############################################################################	448	#############################################################################
121		449
122	=head2 EVENTS AND OBJECT ATTACHMENTS	450	=head2 ATTACHABLE OBJECTS
		451
		452	Many objects in crossfire are so-called attachable objects. That means you can
		453	attach callbacks/event handlers (a collection of which is called an "attachment")
		454	to it. All such attachable objects support the following methods.
		455
		456	In the following description, CLASS can be any of C<global>, C<object>
		457	C<player>, C<client> or C<map> (i.e. the attachable objects in
		458	crossfire+).
123		459
124	=over 4	460	=over 4
125		461
126	=item $object->attach ($attachment, key => $value...)
127
128	=item $object->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to an object.
131
132	=item $player->attach ($attachment, key => $value...)
133
134	=item $player->detach ($attachment)
135
136	Attach/detach a pre-registered attachment to a player.
137
138	=item $map->attach ($attachment, key => $value...)	462	=item $attachable->attach ($attachment, key => $value...)
139		463
140	=item $map->detach ($attachment)	464	=item $attachable->detach ($attachment)
141		465
142	Attach/detach a pre-registered attachment to a map.	466	Attach/detach a pre-registered attachment to a specific object and give it
		467	the specified key/value pairs as arguments.
143		468
144	=item $bool = $object->attached ($name)	469	Example, attach a minesweeper attachment to the given object, making it a
		470	10x10 minesweeper game:
145		471
146	=item $bool = $player->attached ($name)	472	$obj->attach (minesweeper => width => 10, height => 10);
147		473
148	=item $bool = $map->attached ($name)	474	=item $bool = $attachable->attached ($name)
149		475
150	Checks wether the named attachment is currently attached to the object.	476	Checks wether the named attachment is currently attached to the object.
151		477
152	=item cf::attach_global ...	478	=item cf::CLASS->attach ...
153		479
154	Attach handlers for global events.	480	=item cf::CLASS->detach ...
155		481
156	This and all following C<attach_*>-functions expect any number of the	482	Define an anonymous attachment and attach it to all objects of the given
157	following handler/hook descriptions:	483	CLASS. See the next function for an explanation of its arguments.
		484
		485	You can attach to global events by using the C<cf::global> class.
		486
		487	Example, log all player logins:
		488
		489	cf::player->attach (
		490	on_login => sub {
		491	my ($pl) = @_;
		492	...
		493	},
		494	);
		495
		496	Example, attach to the jeweler skill:
		497
		498	cf::object->attach (
		499	type => cf::SKILL,
		500	subtype => cf::SK_JEWELER,
		501	on_use_skill => sub {
		502	my ($sk, $ob, $part, $dir, $msg) = @_;
		503	...
		504	},
		505	);
		506
		507	=item cf::CLASS::attachment $name, ...
		508
		509	Register an attachment by C<$name> through which attachable objects of the
		510	given CLASS can refer to this attachment.
		511
		512	Some classes such as crossfire maps and objects can specify attachments
		513	that are attached at load/instantiate time, thus the need for a name.
		514
		515	These calls expect any number of the following handler/hook descriptions:
158		516
159	=over 4	517	=over 4
160		518
161	=item prio => $number	519	=item prio => $number
162		520
…		…
164	by another C<prio> setting). Lower priority handlers get executed	522	by another C<prio> setting). Lower priority handlers get executed
165	earlier. The default priority is C<0>, and many built-in handlers are	523	earlier. The default priority is C<0>, and many built-in handlers are
166	registered at priority C<-1000>, so lower priorities should not be used	524	registered at priority C<-1000>, so lower priorities should not be used
167	unless you know what you are doing.	525	unless you know what you are doing.
168		526
		527	=item type => $type
		528
		529	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		530	given type of objects only (the additional parameter C<subtype> can be
		531	used to further limit to the given subtype).
		532
169	=item on_I<event> => \&cb	533	=item on_I<event> => \&cb
170		534
171	Call the given code reference whenever the named event happens (event is	535	Call the given code reference whenever the named event happens (event is
172	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	536	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
173	handlers are recognised generally depends on the type of object these	537	handlers are recognised generally depends on the type of object these
…		…
182	package and register them. Only handlers for eevents supported by the	546	package and register them. Only handlers for eevents supported by the
183	object/class are recognised.	547	object/class are recognised.
184		548
185	=back	549	=back
186		550
187	=item cf::attach_to_type $object_type, $subtype, ...	551	Example, define an attachment called "sockpuppet" that calls the given
		552	event handler when a monster attacks:
188		553
189	Attach handlers for a specific object type (e.g. TRANSPORT) and	554	cf::object::attachment sockpuppet =>
190	subtype. If C<$subtype> is zero or undef, matches all objects of the given	555	on_skill_attack => sub {
191	type.	556	my ($self, $victim) = @_;
192		557	...
193	=item cf::attach_to_objects ...
194
195	Attach handlers to all objects. Do not use this except for debugging or
196	very rare events, as handlers are (obviously) called for I<all> objects in
197	the game.
198
199	=item cf::attach_to_players ...
200
201	Attach handlers to all players.
202
203	=item cf::attach_to_maps ...
204
205	Attach handlers to all maps.
206
207	=item cf:register_attachment $name, ...
208
209	Register an attachment by name through which objects can refer to this
210	attachment.
211
212	=item cf:register_player_attachment $name, ...
213
214	Register an attachment by name through which players can refer to this
215	attachment.
216
217	=item cf:register_map_attachment $name, ...
218
219	Register an attachment by name through which maps can refer to this
220	attachment.
221
222	=cut
223
224	# the following variables are defined in .xs and must not be re-created
225	our @CB_GLOBAL = (); # registry for all global events
226	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
227	our @CB_PLAYER = ();
228	our @CB_TYPE = (); # registry for type (cf-object class) based events
229	our @CB_MAP = ();
230
231	my %attachment;
232
233	sub _attach_cb($\%$$$) {
234	my ($registry, $undo, $event, $prio, $cb) = @_;
235
236	use sort 'stable';
237
238	$cb = [$prio, $cb];
239
240	@{$registry->[$event]} = sort
241	{ $a->[0] cmp $b->[0] }
242	@{$registry->[$event] || []}, $cb;
243
244	push @{$undo->{cb}}, [$event, $cb];
245	}
246
247	# attach handles attaching event callbacks
248	# the only thing the caller has to do is pass the correct
249	# registry (== where the callback attaches to).
250	sub _attach(\@$@) {
251	my ($registry, $klass, @arg) = @_;
252
253	my $prio = 0;
254
255	my %undo = (
256	registry => $registry,
257	cb => [],
258	);
259
260	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
261
262	while (@arg) {
263	my $type = shift @arg;
264
265	if ($type eq "prio") {
266	$prio = shift @arg;
267
268	} elsif ($type eq "package") {
269	my $pkg = shift @arg;
270
271	while (my ($name, $id) = each %cb_id) {
272	if (my $cb = $pkg->can ($name)) {
273	_attach_cb $registry, %undo, $id, $prio, $cb;
274	}
275	}	558	}
276
277	} elsif (exists $cb_id{$type}) {
278	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
279
280	} elsif (ref $type) {
281	warn "attaching objects not supported, ignoring.\n";
282
283	} else {
284	shift @arg;
285	warn "attach argument '$type' not supported, ignoring.\n";
286	}
287	}
288
289	\%undo
290	}
291
292	sub _attach_attachment {
293	my ($obj, $name, %arg) = @_;
294
295	return if exists $obj->{_attachment}{$name};
296
297	my $res;
298
299	if (my $attach = $attachment{$name}) {
300	my $registry = $obj->registry;
301
302	for (@$attach) {
303	my ($klass, @attach) = @$_;
304	$res = _attach @$registry, $klass, @attach;
305	}
306
307	$obj->{$name} = \%arg;
308	} else {
309	warn "object uses attachment '$name' that is not available, postponing.\n";
310	}
311
312	$obj->{_attachment}{$name} = undef;
313
314	$res->{attachment} = $name;
315	$res
316	}
317
318	*cf::object::attach =
319	*cf::player::attach =
320	*cf::map::attach = sub {
321	my ($obj, $name, %arg) = @_;
322
323	_attach_attachment $obj, $name, %arg;
324	};
325
326	# all those should be optimised
327	*cf::object::detach =
328	*cf::player::detach =
329	*cf::map::detach = sub {
330	my ($obj, $name) = @_;
331
332	delete $obj->{_attachment}{$name};
333	reattach ($obj);
334	};
335
336	*cf::object::attached =
337	*cf::player::attached =
338	*cf::map::attached = sub {
339	my ($obj, $name) = @_;
340
341	exists $obj->{_attachment}{$name}
342	};
343
344	sub attach_global {
345	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
346	}
347
348	sub attach_to_type {
349	my $type = shift;
350	my $subtype = shift;
351
352	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_objects {
356	_attach @CB_OBJECT, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_players {
360	_attach @CB_PLAYER, KLASS_PLAYER, @_
361	}
362
363	sub attach_to_maps {
364	_attach @CB_MAP, KLASS_MAP, @_
365	}
366
367	sub register_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_OBJECT, @_]];
371	}
372
373	sub register_player_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_PLAYER, @_]];
377	}
378
379	sub register_map_attachment {
380	my $name = shift;
381
382	$attachment{$name} = [[KLASS_MAP, @_]];
383	}
384
385	our $override;
386	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
387
388	sub override {
389	$override = 1;
390	@invoke_results = ();
391	}
392
393	sub do_invoke {
394	my $event = shift;
395	my $callbacks = shift;
396
397	@invoke_results = ();
398
399	local $override;
400
401	for (@$callbacks) {
402	eval { &{$_->[1]} };
403
404	if ($@) {
405	warn "$@";
406	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
407	override;
408	}
409
410	return 1 if $override;
411	}
412
413	0	559	}
414	}
415		560
416	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	561	=item $attachable->valid
417
418	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
419
420	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
421
422	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
423
424	Generate a global/object/player/map-specific event with the given arguments.
425
426	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
427	removed in future versions), and there is no public API to access override
428	results (if you must, access C<@cf::invoke_results> directly).
429
430	=back
431
432	=cut
433
434	#############################################################################
435
436	=head2 METHODS VALID FOR ALL CORE OBJECTS
437
438	=over 4
439
440	=item $object->valid, $player->valid, $map->valid
441		562
442	Just because you have a perl object does not mean that the corresponding	563	Just because you have a perl object does not mean that the corresponding
443	C-level object still exists. If you try to access an object that has no	564	C-level object still exists. If you try to access an object that has no
444	valid C counterpart anymore you get an exception at runtime. This method	565	valid C counterpart anymore you get an exception at runtime. This method
445	can be used to test for existence of the C object part without causing an	566	can be used to test for existence of the C object part without causing an
446	exception.	567	exception.
447		568
		569	=cut
		570
		571	# the following variables are defined in .xs and must not be re-created
		572	our @CB_GLOBAL = (); # registry for all global events
		573	our @CB_ATTACHABLE = (); # registry for all attachables
		574	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		575	our @CB_PLAYER = ();
		576	our @CB_CLIENT = ();
		577	our @CB_TYPE = (); # registry for type (cf-object class) based events
		578	our @CB_MAP = ();
		579
		580	my %attachment;
		581
		582	sub cf::attachable::thawer_merge {
		583	# simply override everything except _meta
		584	local $_[0]{_meta};
		585	%{$_[0]} = %{$_[1]};
		586	}
		587
		588	sub _attach_cb($$$$) {
		589	my ($registry, $event, $prio, $cb) = @_;
		590
		591	use sort 'stable';
		592
		593	$cb = [$prio, $cb];
		594
		595	@{$registry->[$event]} = sort
		596	{ $a->[0] cmp $b->[0] }
		597	@{$registry->[$event] || []}, $cb;
		598	}
		599
		600	# hack
		601	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		602
		603	# attach handles attaching event callbacks
		604	# the only thing the caller has to do is pass the correct
		605	# registry (== where the callback attaches to).
		606	sub _attach {
		607	my ($registry, $klass, @arg) = @_;
		608
		609	my $object_type;
		610	my $prio = 0;
		611	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		612
		613	#TODO: get rid of this hack
		614	if ($attachable_klass{$klass}) {
		615	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		616	}
		617
		618	while (@arg) {
		619	my $type = shift @arg;
		620
		621	if ($type eq "prio") {
		622	$prio = shift @arg;
		623
		624	} elsif ($type eq "type") {
		625	$object_type = shift @arg;
		626	$registry = $CB_TYPE[$object_type] ||= [];
		627
		628	} elsif ($type eq "subtype") {
		629	defined $object_type or Carp::croak "subtype specified without type";
		630	my $object_subtype = shift @arg;
		631	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		632
		633	} elsif ($type eq "package") {
		634	my $pkg = shift @arg;
		635
		636	while (my ($name, $id) = each %cb_id) {
		637	if (my $cb = $pkg->can ($name)) {
		638	_attach_cb $registry, $id, $prio, $cb;
		639	}
		640	}
		641
		642	} elsif (exists $cb_id{$type}) {
		643	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		644
		645	} elsif (ref $type) {
		646	warn "attaching objects not supported, ignoring.\n";
		647
		648	} else {
		649	shift @arg;
		650	warn "attach argument '$type' not supported, ignoring.\n";
		651	}
		652	}
		653	}
		654
		655	sub _object_attach {
		656	my ($obj, $name, %arg) = @_;
		657
		658	return if exists $obj->{_attachment}{$name};
		659
		660	if (my $attach = $attachment{$name}) {
		661	my $registry = $obj->registry;
		662
		663	for (@$attach) {
		664	my ($klass, @attach) = @$_;
		665	_attach $registry, $klass, @attach;
		666	}
		667
		668	$obj->{$name} = \%arg;
		669	} else {
		670	warn "object uses attachment '$name' that is not available, postponing.\n";
		671	}
		672
		673	$obj->{_attachment}{$name} = undef;
		674	}
		675
		676	sub cf::attachable::attach {
		677	if (ref $_[0]) {
		678	_object_attach @_;
		679	} else {
		680	_attach shift->_attach_registry, @_;
		681	}
		682	_recalc_want;
		683	};
		684
		685	# all those should be optimised
		686	sub cf::attachable::detach {
		687	my ($obj, $name) = @_;
		688
		689	if (ref $obj) {
		690	delete $obj->{_attachment}{$name};
		691	reattach ($obj);
		692	} else {
		693	Carp::croak "cannot, currently, detach class attachments";
		694	}
		695	_recalc_want;
		696	};
		697
		698	sub cf::attachable::attached {
		699	my ($obj, $name) = @_;
		700
		701	exists $obj->{_attachment}{$name}
		702	}
		703
		704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
		709
		710	sub cf::\L$klass\E::attachment {
		711	my \$name = shift;
		712
		713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
		717	}
		718
		719	our $override;
		720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		721
		722	sub override {
		723	$override = 1;
		724	@invoke_results = ();
		725	}
		726
		727	sub do_invoke {
		728	my $event = shift;
		729	my $callbacks = shift;
		730
		731	@invoke_results = ();
		732
		733	local $override;
		734
		735	for (@$callbacks) {
		736	eval { &{$_->[1]} };
		737
		738	if ($@) {
		739	warn "$@";
		740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		741	override;
		742	}
		743
		744	return 1 if $override;
		745	}
		746
		747	0
		748	}
		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
448	=back	760	=back
449		761
450	=cut	762	=cut
451
452	*cf::object::valid =
453	*cf::player::valid =
454	*cf::map::valid = \&cf::_valid;
455		763
456	#############################################################################	764	#############################################################################
457	# object support	765	# object support
458		766
459	sub instantiate {
460	my ($obj, $data) = @_;
461
462	$data = from_json $data;
463
464	for (@$data) {
465	my ($name, $args) = @$_;
466
467	$obj->attach ($name, %{$args || {} });
468	}
469	}
470
471	# basically do the same as instantiate, without calling instantiate
472	sub reattach {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
473	my ($obj) = @_;	769	my ($obj) = @_;
		770
		771	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		772
474	my $registry = $obj->registry;	773	my $registry = $obj->registry;
475		774
476	@$registry = ();	775	@$registry = ();
477		776
478	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	777	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
479		778
480	for my $name (keys %{ $obj->{_attachment} || {} }) {	779	for my $name (keys %{ $obj->{_attachment} || {} }) {
481	if (my $attach = $attachment{$name}) {	780	if (my $attach = $attachment{$name}) {
482	for (@$attach) {	781	for (@$attach) {
483	my ($klass, @attach) = @$_;	782	my ($klass, @attach) = @$_;
484	_attach @$registry, $klass, @attach;	783	_attach $registry, $klass, @attach;
485	}	784	}
486	} else {	785	} else {
487	warn "object uses attachment '$name' that is not available, postponing.\n";	786	warn "object uses attachment '$name' that is not available, postponing.\n";
488	}	787	}
489	}	788	}
490	}	789	}
491		790
492	sub object_freezer_save {	791	cf::attachable->attach (
493	my ($filename, $rdata, $objs) = @_;
494
495	if (length $$rdata) {
496	warn sprintf "saving %s (%d,%d)\n",
497	$filename, length $$rdata, scalar @$objs;
498
499	if (open my $fh, ">:raw", "$filename~") {
500	chmod SAVE_MODE, $fh;
501	syswrite $fh, $$rdata;
502	close $fh;
503
504	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
505	chmod SAVE_MODE, $fh;
506	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
507	close $fh;
508	rename "$filename.pst~", "$filename.pst";
509	} else {
510	unlink "$filename.pst";
511	}
512
513	rename "$filename~", $filename;
514	} else {
515	warn "FATAL: $filename~: $!\n";
516	}
517	} else {
518	unlink $filename;
519	unlink "$filename.pst";
520	}
521	}
522
523	sub object_thawer_load {
524	my ($filename) = @_;
525
526	local $/;
527
528	my $av;
529
530	#TODO: use sysread etc.
531	if (open my $data, "<:raw:perlio", $filename) {
532	$data = <$data>;
533	if (open my $pst, "<:raw:perlio", "$filename.pst") {
534	$av = eval { (Storable::thaw <$pst>)->{objs} };
535	}
536	return ($data, $av);
537	}
538
539	()
540	}
541
542	attach_to_objects
543	prio => -1000000,	792	prio => -1000000,
		793	on_instantiate => sub {
		794	my ($obj, $data) = @_;
		795
		796	$data = from_json $data;
		797
		798	for (@$data) {
		799	my ($name, $args) = @$_;
		800
		801	$obj->attach ($name, %{$args || {} });
		802	}
		803	},
		804	on_reattach => \&reattach,
544	on_clone => sub {	805	on_clone => sub {
545	my ($src, $dst) = @_;	806	my ($src, $dst) = @_;
546		807
547	@{$dst->registry} = @{$src->registry};	808	@{$dst->registry} = @{$src->registry};
548		809
549	%$dst = %$src;	810	%$dst = %$src;
550		811
551	%{$dst->{_attachment}} = %{$src->{_attachment}}	812	%{$dst->{_attachment}} = %{$src->{_attachment}}
552	if exists $src->{_attachment};	813	if exists $src->{_attachment};
553	},	814	},
554	;	815	);
		816
		817	sub object_freezer_save {
		818	my ($filename, $rdata, $objs) = @_;
		819
		820	sync_job {
		821	if (length $$rdata) {
		822	warn sprintf "saving %s (%d,%d)\n",
		823	$filename, length $$rdata, scalar @$objs;
		824
		825	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		826	chmod SAVE_MODE, $fh;
		827	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		828	aio_fsync $fh if $cf::USE_FSYNC;
		829	close $fh;
		830
		831	if (@$objs) {
		832	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		833	chmod SAVE_MODE, $fh;
		834	my $data = Storable::nfreeze { version => 1, objs => $objs };
		835	aio_write $fh, 0, (length $data), $data, 0;
		836	aio_fsync $fh if $cf::USE_FSYNC;
		837	close $fh;
		838	aio_rename "$filename.pst~", "$filename.pst";
		839	}
		840	} else {
		841	aio_unlink "$filename.pst";
		842	}
		843
		844	aio_rename "$filename~", $filename;
		845	} else {
		846	warn "FATAL: $filename~: $!\n";
		847	}
		848	} else {
		849	aio_unlink $filename;
		850	aio_unlink "$filename.pst";
		851	}
		852	}
		853	}
		854
		855	sub object_freezer_as_string {
		856	my ($rdata, $objs) = @_;
		857
		858	use Data::Dumper;
		859
		860	$$rdata . Dumper $objs
		861	}
		862
		863	sub object_thawer_load {
		864	my ($filename) = @_;
		865
		866	my ($data, $av);
		867
		868	(aio_load $filename, $data) >= 0
		869	or return;
		870
		871	unless (aio_stat "$filename.pst") {
		872	(aio_load "$filename.pst", $av) >= 0
		873	or return;
		874	$av = eval { (Storable::thaw $av)->{objs} };
		875	}
		876
		877	warn sprintf "loading %s (%d)\n",
		878	$filename, length $data, scalar @{$av || []};#d#
		879	return ($data, $av);
		880	}
555		881
556	#############################################################################	882	#############################################################################
557	# old plug-in events	883	# command handling &c
558		884
559	sub inject_event {	885	=item cf::register_command $name => \&callback($ob,$args);
560	my $extension = shift;
561	my $event_code = shift;
562		886
563	my $cb = $hook[$event_code]{$extension}	887	Register a callback for execution when the client sends the user command
564	or return;	888	$name.
565		889
566	&$cb	890	=cut
567	}
568
569	sub inject_global_event {
570	my $event = shift;
571
572	my $cb = $hook[$event]
573	or return;
574
575	List::Util::max map &$_, values %$cb
576	}
577
578	sub inject_command {
579	my ($name, $obj, $params) = @_;
580
581	for my $cmd (@{ $command{$name} }) {
582	$cmd->[1]->($obj, $params);
583	}
584
585	-1
586	}
587		891
588	sub register_command {	892	sub register_command {
589	my ($name, $time, $cb) = @_;	893	my ($name, $cb) = @_;
590		894
591	my $caller = caller;	895	my $caller = caller;
592	#warn "registering command '$name/$time' to '$caller'";	896	#warn "registering command '$name/$time' to '$caller'";
593		897
594	push @{ $command{$name} }, [$time, $cb, $caller];	898	push @{ $COMMAND{$name} }, [$caller, $cb];
595	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
596	}	899	}
		900
		901	=item cf::register_extcmd $name => \&callback($pl,$packet);
		902
		903	Register a callbackf ro execution when the client sends an extcmd packet.
		904
		905	If the callback returns something, it is sent back as if reply was being
		906	called.
		907
		908	=cut
597		909
598	sub register_extcmd {	910	sub register_extcmd {
599	my ($name, $cb) = @_;	911	my ($name, $cb) = @_;
600		912
601	my $caller = caller;	913	$EXTCMD{$name} = $cb;
602	#warn "registering extcmd '$name' to '$caller'";
603
604	$extcmd{$name} = [$cb, $caller];
605	}	914	}
606		915
607	sub register {	916	cf::player->attach (
608	my ($base, $pkg) = @_;	917	on_command => sub {
		918	my ($pl, $name, $params) = @_;
609		919
610	#TODO	920	my $cb = $COMMAND{$name}
611	}	921	or return;
		922
		923	for my $cmd (@$cb) {
		924	$cmd->[1]->($pl->ob, $params);
		925	}
		926
		927	cf::override;
		928	},
		929	on_extcmd => sub {
		930	my ($pl, $buf) = @_;
		931
		932	my $msg = eval { from_json $buf };
		933
		934	if (ref $msg) {
		935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		936	if (my %reply = $cb->($pl, $msg)) {
		937	$pl->ext_reply ($msg->{msgid}, %reply);
		938	}
		939	}
		940	} else {
		941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		942	}
		943
		944	cf::override;
		945	},
		946	);
612		947
613	sub load_extension {	948	sub load_extension {
614	my ($path) = @_;	949	my ($path) = @_;
615		950
616	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	951	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
617	my $base = $1;	952	my $base = $1;
618	my $pkg = $1;	953	my $pkg = $1;
619	$pkg =~ s/[^[:word:]]/_/g;	954	$pkg =~ s/[^[:word:]]/_/g;
620	$pkg = "ext::$pkg";	955	$pkg = "ext::$pkg";
621		956
622	warn "loading '$path' into '$pkg'\n";	957	warn "... loading '$path' into '$pkg'\n";
623		958
624	open my $fh, "<:utf8", $path	959	open my $fh, "<:utf8", $path
625	or die "$path: $!";	960	or die "$path: $!";
626		961
627	my $source =	962	my $source =
628	"package $pkg; use strict; use utf8;\n"	963	"package $pkg; use strict; use utf8;\n"
629	. "#line 1 \"$path\"\n{\n"	964	. "#line 1 \"$path\"\n{\n"
630	. (do { local $/; <$fh> })	965	. (do { local $/; <$fh> })
631	. "\n};\n1";	966	. "\n};\n1";
632		967
633	eval $source	968	unless (eval $source) {
634	or die "$path: $@";	969	my $msg = $@ ? "$path: $@\n"
635		970	: "extension disabled.\n";
636	push @exts, $pkg;	971	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
637	$ext_pkg{$base} = $pkg;	972	warn $@;
638		973	warn "mandatory extension failed to load, exiting.\n";
639	# no strict 'refs';	974	exit 1;
640	# @{"$pkg\::ISA"} = ext::;	975	}
641		976	die $@;
642	register $base, $pkg;
643	}
644
645	sub unload_extension {
646	my ($pkg) = @_;
647
648	warn "removing extension $pkg\n";
649
650	# remove hooks
651	#TODO
652	# for my $idx (0 .. $#PLUGIN_EVENT) {
653	# delete $hook[$idx]{$pkg};
654	# }	977	}
655		978
656	# remove commands	979	push @EXTS, $pkg;
657	for my $name (keys %command) {
658	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
659
660	if (@cb) {
661	$command{$name} = \@cb;
662	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
663	} else {
664	delete $command{$name};
665	delete $COMMAND{"$name\000"};
666	}
667	}
668
669	# remove extcmds
670	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
671	delete $extcmd{$name};
672	}
673
674	if (my $cb = $pkg->can ("unload")) {
675	eval {
676	$cb->($pkg);
677	1
678	} or warn "$pkg unloaded, but with errors: $@";
679	}
680
681	Symbol::delete_package $pkg;
682	}	980	}
683		981
684	sub load_extensions {	982	sub load_extensions {
685	my $LIBDIR = maps_directory "perl";
686
687	for my $ext (<$LIBDIR/*.ext>) {	983	for my $ext (<$LIBDIR/*.ext>) {
688	next unless -r $ext;	984	next unless -r $ext;
689	eval {	985	eval {
690	load_extension $ext;	986	load_extension $ext;
691	1	987	1
692	} or warn "$ext not loaded: $@";	988	} or warn "$ext not loaded: $@";
693	}	989	}
694	}	990	}
695		991
696	#############################################################################	992	#############################################################################
697	# extcmd framework, basically convert ext <msg>
698	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
699		993
700	attach_to_players	994	=head2 CORE EXTENSIONS
701	on_extcmd => sub {	995
		996	Functions and methods that extend core crossfire objects.
		997
		998	=cut
		999
		1000	package cf::player;
		1001
		1002	use Coro::AIO;
		1003
		1004	=head3 cf::player
		1005
		1006	=over 4
		1007
		1008	=item cf::player::find $login
		1009
		1010	Returns the given player object, loading it if necessary (might block).
		1011
		1012	=cut
		1013
		1014	sub playerdir($) {
		1015	"$PLAYERDIR/"
		1016	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1017	}
		1018
		1019	sub path($) {
		1020	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1021
		1022	(playerdir $login) . "/playerdata"
		1023	}
		1024
		1025	sub find_active($) {
		1026	$cf::PLAYER{$_[0]}
		1027	and $cf::PLAYER{$_[0]}->active
		1028	and $cf::PLAYER{$_[0]}
		1029	}
		1030
		1031	sub exists($) {
		1032	my ($login) = @_;
		1033
		1034	$cf::PLAYER{$login}
		1035	or cf::sync_job { !aio_stat path $login }
		1036	}
		1037
		1038	sub find($) {
		1039	return $cf::PLAYER{$_[0]} || do {
		1040	my $login = $_[0];
		1041
		1042	my $guard = cf::lock_acquire "user_find:$login";
		1043
		1044	$cf::PLAYER{$_[0]} || do {
		1045	# rename old playerfiles to new ones
		1046	#TODO: remove when no longer required
		1047	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1048	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1049	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1050	aio_unlink +(playerdir $login) . "/$login.pl";
		1051
		1052	my $pl = load_pl path $login
		1053	or return;
		1054	$cf::PLAYER{$login} = $pl
		1055	}
		1056	}
		1057	}
		1058
		1059	sub save($) {
702	my ($pl, $buf) = @_;	1060	my ($pl) = @_;
703		1061
704	my $msg = eval { from_json $buf };	1062	return if $pl->{deny_save};
705		1063
706	if (ref $msg) {	1064	my $path = path $pl;
707	if (my $cb = $extcmd{$msg->{msgtype}}) {	1065	my $guard = cf::lock_acquire "user_save:$path";
708	if (my %reply = $cb->[0]->($pl, $msg)) {	1066
709	$pl->ext_reply ($msg->{msgid}, %reply);	1067	return if $pl->{deny_save};
710	}	1068
		1069	aio_mkdir playerdir $pl, 0770;
		1070	$pl->{last_save} = $cf::RUNTIME;
		1071
		1072	$pl->save_pl ($path);
		1073	Coro::cede;
		1074	}
		1075
		1076	sub new($) {
		1077	my ($login) = @_;
		1078
		1079	my $self = create;
		1080
		1081	$self->ob->name ($login);
		1082	$self->{deny_save} = 1;
		1083
		1084	$cf::PLAYER{$login} = $self;
		1085
		1086	$self
		1087	}
		1088
		1089	=item $pl->quit_character
		1090
		1091	Nukes the player without looking back. If logged in, the connection will
		1092	be destroyed. May block for a long time.
		1093
		1094	=cut
		1095
		1096	sub quit_character {
		1097	my ($pl) = @_;
		1098
		1099	my $name = $pl->ob->name;
		1100
		1101	$pl->{deny_save} = 1;
		1102	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1103
		1104	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1105	$pl->deactivate;
		1106	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1107	$pl->ns->destroy if $pl->ns;
		1108
		1109	my $path = playerdir $pl;
		1110	my $temp = "$path~$cf::RUNTIME~deleting~";
		1111	aio_rename $path, $temp;
		1112	delete $cf::PLAYER{$pl->ob->name};
		1113	$pl->destroy;
		1114
		1115	my $prefix = qr<^~\Q$name\E/>;
		1116
		1117	# nuke player maps
		1118	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1119
		1120	IO::AIO::aio_rmtree $temp;
		1121	}
		1122
		1123	=item $pl->kick
		1124
		1125	Kicks a player out of the game. This destroys the connection.
		1126
		1127	=cut
		1128
		1129	sub kick {
		1130	my ($pl, $kicker) = @_;
		1131
		1132	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1133	$pl->killer ("kicked");
		1134	$pl->ns->destroy;
		1135	}
		1136
		1137	=item cf::player::list_logins
		1138
		1139	Returns am arrayref of all valid playernames in the system, can take a
		1140	while and may block, so not sync_job-capable, ever.
		1141
		1142	=cut
		1143
		1144	sub list_logins {
		1145	my $dirs = aio_readdir $PLAYERDIR
		1146	or return [];
		1147
		1148	my @logins;
		1149
		1150	for my $login (@$dirs) {
		1151	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1152	aio_read $fh, 0, 512, my $buf, 0 or next;
		1153	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1154
		1155	utf8::decode $login;
		1156	push @logins, $login;
		1157	}
		1158
		1159	\@logins
		1160	}
		1161
		1162	=item $player->maps
		1163
		1164	Returns an arrayref of map paths that are private for this
		1165	player. May block.
		1166
		1167	=cut
		1168
		1169	sub maps($) {
		1170	my ($pl) = @_;
		1171
		1172	$pl = ref $pl ? $pl->ob->name : $pl;
		1173
		1174	my $files = aio_readdir playerdir $pl
		1175	or return;
		1176
		1177	my @paths;
		1178
		1179	for (@$files) {
		1180	utf8::decode $_;
		1181	next if /\.(?:pl|pst)$/;
		1182	next unless /^$PATH_SEP/o;
		1183
		1184	push @paths, cf::map::normalise "~$pl/$_";
		1185	}
		1186
		1187	\@paths
		1188	}
		1189
		1190	=item $player->ext_reply ($msgid, %msg)
		1191
		1192	Sends an ext reply to the player.
		1193
		1194	=cut
		1195
		1196	sub ext_reply($$%) {
		1197	my ($self, $id, %msg) = @_;
		1198
		1199	$msg{msgid} = $id;
		1200
		1201	$self->send ("ext " . cf::to_json \%msg);
		1202	}
		1203
		1204	=item $player->ext_event ($type, %msg)
		1205
		1206	Sends an ext event to the client.
		1207
		1208	=cut
		1209
		1210	sub ext_event($$%) {
		1211	my ($self, $type, %msg) = @_;
		1212
		1213	$self->ns->ext_event ($type, %msg);
		1214	}
		1215
		1216	=head3 cf::region
		1217
		1218	=over 4
		1219
		1220	=cut
		1221
		1222	package cf::region;
		1223
		1224	=item cf::region::find_by_path $path
		1225
		1226	Tries to decuce the probable region for a map knowing only its path.
		1227
		1228	=cut
		1229
		1230	sub find_by_path($) {
		1231	my ($path) = @_;
		1232
		1233	my ($match, $specificity);
		1234
		1235	for my $region (list) {
		1236	if ($region->match && $path =~ $region->match) {
		1237	($match, $specificity) = ($region, $region->specificity)
		1238	if $region->specificity > $specificity;
		1239	}
		1240	}
		1241
		1242	$match
		1243	}
		1244
		1245	=back
		1246
		1247	=head3 cf::map
		1248
		1249	=over 4
		1250
		1251	=cut
		1252
		1253	package cf::map;
		1254
		1255	use Fcntl;
		1256	use Coro::AIO;
		1257
		1258	use overload
		1259	'""' => \&as_string,
		1260	fallback => 1;
		1261
		1262	our $MAX_RESET = 3600;
		1263	our $DEFAULT_RESET = 3000;
		1264
		1265	sub generate_random_map {
		1266	my ($self, $rmp) = @_;
		1267	# mit "rum" bekleckern, nicht
		1268	$self->_create_random_map (
		1269	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1270	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1271	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1272	$rmp->{exit_on_final_map},
		1273	$rmp->{xsize}, $rmp->{ysize},
		1274	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1275	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1276	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1277	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1278	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1279	(cf::region::find $rmp->{region}), $rmp->{custom}
		1280	)
		1281	}
		1282
		1283	=item cf::map->register ($regex, $prio)
		1284
		1285	Register a handler for the map path matching the given regex at the
		1286	givne priority (higher is better, built-in handlers have priority 0, the
		1287	default).
		1288
		1289	=cut
		1290
		1291	sub register {
		1292	my (undef, $regex, $prio) = @_;
		1293	my $pkg = caller;
		1294
		1295	no strict;
		1296	push @{"$pkg\::ISA"}, __PACKAGE__;
		1297
		1298	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1299	}
		1300
		1301	# also paths starting with '/'
		1302	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1303
		1304	sub thawer_merge {
		1305	my ($self, $merge) = @_;
		1306
		1307	# we have to keep some variables in memory intact
		1308	local $self->{path};
		1309	local $self->{load_path};
		1310	local $self->{deny_save};
		1311	local $self->{deny_reset};
		1312
		1313	$self->SUPER::thawer_merge ($merge);
		1314	}
		1315
		1316	sub normalise {
		1317	my ($path, $base) = @_;
		1318
		1319	$path = "$path"; # make sure its a string
		1320
		1321	$path =~ s/\.map$//;
		1322
		1323	# map plan:
		1324	#
		1325	# /! non-realised random map exit (special hack!)
		1326	# {... are special paths that are not being touched
		1327	# ?xxx/... are special absolute paths
		1328	# ?random/... random maps
		1329	# /... normal maps
		1330	# ~user/... per-player map of a specific user
		1331
		1332	$path =~ s/$PATH_SEP/\//go;
		1333
		1334	# treat it as relative path if it starts with
		1335	# something that looks reasonable
		1336	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1337	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1338
		1339	$base =~ s{[^/]+/?$}{};
		1340	$path = "$base/$path";
		1341	}
		1342
		1343	for ($path) {
		1344	redo if s{//}{/};
		1345	redo if s{/\.?/}{/};
		1346	redo if s{/[^/]+/\.\./}{/};
		1347	}
		1348
		1349	$path
		1350	}
		1351
		1352	sub new_from_path {
		1353	my (undef, $path, $base) = @_;
		1354
		1355	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1356
		1357	$path = normalise $path, $base;
		1358
		1359	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1360	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1361	my $self = bless cf::map::new, $pkg;
		1362	$self->{path} = $path; $self->path ($path);
		1363	$self->init; # pass $1 etc.
		1364	return $self;
		1365	}
		1366	}
		1367
		1368	Carp::carp "unable to resolve path '$path' (base '$base').";
		1369	()
		1370	}
		1371
		1372	sub init {
		1373	my ($self) = @_;
		1374
		1375	$self
		1376	}
		1377
		1378	sub as_string {
		1379	my ($self) = @_;
		1380
		1381	"$self->{path}"
		1382	}
		1383
		1384	# the displayed name, this is a one way mapping
		1385	sub visible_name {
		1386	&as_string
		1387	}
		1388
		1389	# the original (read-only) location
		1390	sub load_path {
		1391	my ($self) = @_;
		1392
		1393	"$MAPDIR/$self->{path}.map"
		1394	}
		1395
		1396	# the temporary/swap location
		1397	sub save_path {
		1398	my ($self) = @_;
		1399
		1400	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1401	"$TMPDIR/$path.map"
		1402	}
		1403
		1404	# the unique path, undef == no special unique path
		1405	sub uniq_path {
		1406	my ($self) = @_;
		1407
		1408	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1409	"$UNIQUEDIR/$path"
		1410	}
		1411
		1412	# and all this just because we cannot iterate over
		1413	# all maps in C++...
		1414	sub change_all_map_light {
		1415	my ($change) = @_;
		1416
		1417	$_->change_map_light ($change)
		1418	for grep $_->outdoor, values %cf::MAP;
		1419	}
		1420
		1421	sub unlink_save {
		1422	my ($self) = @_;
		1423
		1424	utf8::encode (my $save = $self->save_path);
		1425	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1426	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1427	}
		1428
		1429	sub load_header_from($) {
		1430	my ($self, $path) = @_;
		1431
		1432	utf8::encode $path;
		1433	#aio_open $path, O_RDONLY, 0
		1434	# or return;
		1435
		1436	$self->_load_header ($path)
		1437	or return;
		1438
		1439	$self->{load_path} = $path;
		1440
		1441	1
		1442	}
		1443
		1444	sub load_header_orig {
		1445	my ($self) = @_;
		1446
		1447	$self->load_header_from ($self->load_path)
		1448	}
		1449
		1450	sub load_header_temp {
		1451	my ($self) = @_;
		1452
		1453	$self->load_header_from ($self->save_path)
		1454	}
		1455
		1456	sub prepare_temp {
		1457	my ($self) = @_;
		1458
		1459	$self->last_access ((delete $self->{last_access})
		1460	|| $cf::RUNTIME); #d#
		1461	# safety
		1462	$self->{instantiate_time} = $cf::RUNTIME
		1463	if $self->{instantiate_time} > $cf::RUNTIME;
		1464	}
		1465
		1466	sub prepare_orig {
		1467	my ($self) = @_;
		1468
		1469	$self->{load_original} = 1;
		1470	$self->{instantiate_time} = $cf::RUNTIME;
		1471	$self->last_access ($cf::RUNTIME);
		1472	$self->instantiate;
		1473	}
		1474
		1475	sub load_header {
		1476	my ($self) = @_;
		1477
		1478	if ($self->load_header_temp) {
		1479	$self->prepare_temp;
		1480	} else {
		1481	$self->load_header_orig
		1482	or return;
		1483	$self->prepare_orig;
		1484	}
		1485
		1486	$self->default_region (cf::region::find_by_path $self->{path})
		1487	unless $self->default_region;
		1488
		1489	1
		1490	}
		1491
		1492	sub find;
		1493	sub find {
		1494	my ($path, $origin) = @_;
		1495
		1496	$path = normalise $path, $origin && $origin->path;
		1497
		1498	cf::lock_wait "map_find:$path";
		1499
		1500	$cf::MAP{$path} || do {
		1501	my $guard = cf::lock_acquire "map_find:$path";
		1502	my $map = new_from_path cf::map $path
		1503	or return;
		1504
		1505	$map->{last_save} = $cf::RUNTIME;
		1506
		1507	$map->load_header
		1508	or return;
		1509
		1510	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1511	# doing this can freeze the server in a sync job, obviously
		1512	#$cf::WAIT_FOR_TICK->wait;
		1513	$map->reset;
		1514	undef $guard;
		1515	return find $path;
		1516	}
		1517
		1518	$cf::MAP{$path} = $map
		1519	}
		1520	}
		1521
		1522	sub pre_load { }
		1523	sub post_load { }
		1524
		1525	sub load {
		1526	my ($self) = @_;
		1527
		1528	local $self->{deny_reset} = 1; # loading can take a long time
		1529
		1530	my $path = $self->{path};
		1531
		1532	{
		1533	my $guard = cf::lock_acquire "map_load:$path";
		1534
		1535	return if $self->in_memory != cf::MAP_SWAPPED;
		1536
		1537	$self->in_memory (cf::MAP_LOADING);
		1538
		1539	$self->alloc;
		1540
		1541	$self->pre_load;
		1542	Coro::cede;
		1543
		1544	$self->_load_objects ($self->{load_path}, 1)
		1545	or return;
		1546
		1547	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1548	if delete $self->{load_original};
		1549
		1550	if (my $uniq = $self->uniq_path) {
		1551	utf8::encode $uniq;
		1552	if (aio_open $uniq, O_RDONLY, 0) {
		1553	$self->clear_unique_items;
		1554	$self->_load_objects ($uniq, 0);
711	}	1555	}
712	} else {
713	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
714	}	1556	}
715		1557
716	cf::override;	1558	Coro::cede;
		1559	# now do the right thing for maps
		1560	$self->link_multipart_objects;
		1561	$self->difficulty ($self->estimate_difficulty)
		1562	unless $self->difficulty;
		1563	Coro::cede;
		1564
		1565	unless ($self->{deny_activate}) {
		1566	$self->decay_objects;
		1567	$self->fix_auto_apply;
		1568	$self->update_buttons;
		1569	Coro::cede;
		1570	$self->set_darkness_map;
		1571	Coro::cede;
		1572	$self->activate;
		1573	}
		1574
		1575	$self->in_memory (cf::MAP_IN_MEMORY);
717	},	1576	}
718	;
719		1577
720	#############################################################################	1578	$self->post_load;
721	# load/save/clean perl data associated with a map	1579	}
722		1580
723	*cf::mapsupport::on_clean = sub {	1581	sub customise_for {
		1582	my ($self, $ob) = @_;
		1583
		1584	return find "~" . $ob->name . "/" . $self->{path}
		1585	if $self->per_player;
		1586
		1587	$self
		1588	}
		1589
		1590	# find and load all maps in the 3x3 area around a map
		1591	sub load_diag {
724	my ($map) = @_;	1592	my ($map) = @_;
725		1593
726	my $path = $map->tmpname;	1594	my @diag; # diagonal neighbours
727	defined $path or return;
728		1595
729	unlink "$path.pst";	1596	for (0 .. 3) {
730	};	1597	my $neigh = $map->tile_path ($_)
		1598	or next;
		1599	$neigh = find $neigh, $map
		1600	or next;
		1601	$neigh->load;
731		1602
732	attach_to_maps prio => -10000, package => cf::mapsupport::;	1603	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1604	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1605	}
733		1606
734	#############################################################################	1607	for (@diag) {
735	# load/save perl data associated with player->ob objects	1608	my $neigh = find @$_
736		1609	or next;
737	sub all_objects(@) {	1610	$neigh->load;
738	@_, map all_objects ($_->inv), @_	1611	}
739	}	1612	}
740		1613
741	# TODO: compatibility cruft, remove when no longer needed	1614	sub find_sync {
742	attach_to_players	1615	my ($path, $origin) = @_;
743	on_load => sub {
744	my ($pl, $path) = @_;
745		1616
746	for my $o (all_objects $pl->ob) {	1617	cf::sync_job { find $path, $origin }
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1618	}
748	$o->set_ob_key_value ("_perl_data");
749		1619
750	%$o = %{ Storable::thaw pack "H*", $value };	1620	sub do_load_sync {
		1621	my ($map) = @_;
		1622
		1623	cf::sync_job { $map->load };
		1624	}
		1625
		1626	our %MAP_PREFETCH;
		1627	our $MAP_PREFETCHER = undef;
		1628
		1629	sub find_async {
		1630	my ($path, $origin) = @_;
		1631
		1632	$path = normalise $path, $origin && $origin->{path};
		1633
		1634	if (my $map = $cf::MAP{$path}) {
		1635	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1636	}
		1637
		1638	undef $MAP_PREFETCH{$path};
		1639	$MAP_PREFETCHER ||= cf::async {
		1640	while (%MAP_PREFETCH) {
		1641	for my $path (keys %MAP_PREFETCH) {
		1642	my $map = find $path
		1643	or next;
		1644	$map->load;
		1645
		1646	delete $MAP_PREFETCH{$path};
751	}	1647	}
752	}	1648	}
		1649	undef $MAP_PREFETCHER;
		1650	};
		1651	$MAP_PREFETCHER->prio (6);
		1652
		1653	()
		1654	}
		1655
		1656	sub save {
		1657	my ($self) = @_;
		1658
		1659	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1660
		1661	$self->{last_save} = $cf::RUNTIME;
		1662
		1663	return unless $self->dirty;
		1664
		1665	my $save = $self->save_path; utf8::encode $save;
		1666	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1667
		1668	$self->{load_path} = $save;
		1669
		1670	return if $self->{deny_save};
		1671
		1672	local $self->{last_access} = $self->last_access;#d#
		1673
		1674	cf::async {
		1675	$_->contr->save for $self->players;
		1676	};
		1677
		1678	if ($uniq) {
		1679	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1680	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1681	} else {
		1682	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
753	},	1683	}
754	;	1684	}
755		1685
756	#############################################################################	1686	sub swap_out {
		1687	my ($self) = @_;
757		1688
758	=head2 CORE EXTENSIONS	1689	# save first because save cedes
		1690	$self->save;
759		1691
760	Functions and methods that extend core crossfire objects.	1692	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1693
		1694	return if $self->players;
		1695	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1696	return if $self->{deny_save};
		1697
		1698	$self->clear;
		1699	$self->in_memory (cf::MAP_SWAPPED);
		1700	}
		1701
		1702	sub reset_at {
		1703	my ($self) = @_;
		1704
		1705	# TODO: safety, remove and allow resettable per-player maps
		1706	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1707	return 1e99 if $self->{deny_reset};
		1708
		1709	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1710	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1711
		1712	$time + $to
		1713	}
		1714
		1715	sub should_reset {
		1716	my ($self) = @_;
		1717
		1718	$self->reset_at <= $cf::RUNTIME
		1719	}
		1720
		1721	sub reset {
		1722	my ($self) = @_;
		1723
		1724	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1725
		1726	return if $self->players;
		1727	return if $self->isa ("ext::map_per_player");#d#
		1728
		1729	warn "resetting map ", $self->path;#d#
		1730
		1731	$self->in_memory (cf::MAP_SWAPPED);
		1732
		1733	# need to save uniques path
		1734	unless ($self->{deny_save}) {
		1735	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1736
		1737	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1738	if $uniq;
		1739	}
		1740
		1741	delete $cf::MAP{$self->path};
		1742
		1743	$self->clear;
		1744
		1745	$_->clear_links_to ($self) for values %cf::MAP;
		1746
		1747	$self->unlink_save;
		1748	$self->destroy;
		1749	}
		1750
		1751	my $nuke_counter = "aaaa";
		1752
		1753	sub nuke {
		1754	my ($self) = @_;
		1755
		1756	delete $cf::MAP{$self->path};
		1757
		1758	$self->unlink_save;
		1759
		1760	bless $self, "cf::map";
		1761	delete $self->{deny_reset};
		1762	$self->{deny_save} = 1;
		1763	$self->reset_timeout (1);
		1764	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1765
		1766	$cf::MAP{$self->path} = $self;
		1767
		1768	$self->reset; # polite request, might not happen
		1769	}
		1770
		1771	=item cf::map::unique_maps
		1772
		1773	Returns an arrayref of paths of all shared maps that have
		1774	instantiated unique items. May block.
		1775
		1776	=cut
		1777
		1778	sub unique_maps() {
		1779	my $files = aio_readdir $UNIQUEDIR
		1780	or return;
		1781
		1782	my @paths;
		1783
		1784	for (@$files) {
		1785	utf8::decode $_;
		1786	next if /\.pst$/;
		1787	next unless /^$PATH_SEP/o;
		1788
		1789	push @paths, cf::map::normalise $_;
		1790	}
		1791
		1792	\@paths
		1793	}
		1794
		1795	package cf;
		1796
		1797	=back
		1798
		1799	=head3 cf::object
		1800
		1801	=cut
		1802
		1803	package cf::object;
761		1804
762	=over 4	1805	=over 4
763		1806
764	=item cf::player::exists $login	1807	=item $ob->inv_recursive
765		1808
766	Returns true when the given account exists.	1809	Returns the inventory of the object _and_ their inventories, recursively.
767		1810
768	=cut	1811	=cut
769		1812
770	sub cf::player::exists($) {	1813	sub inv_recursive_;
771	cf::player::find $_[0]	1814	sub inv_recursive_ {
772	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1815	map { $_, inv_recursive_ $_->inv } @_
773	}	1816	}
774		1817
		1818	sub inv_recursive {
		1819	inv_recursive_ inv $_[0]
		1820	}
		1821
		1822	package cf;
		1823
		1824	=back
		1825
		1826	=head3 cf::object::player
		1827
		1828	=over 4
		1829
775	=item $object->reply ($npc, $msg[, $flags])	1830	=item $player_object->reply ($npc, $msg[, $flags])
776		1831
777	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1832	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
778	can be C<undef>. Does the right thing when the player is currently in a	1833	can be C<undef>. Does the right thing when the player is currently in a
779	dialogue with the given NPC character.	1834	dialogue with the given NPC character.
780		1835
781	=cut	1836	=cut
782		1837
783	# rough implementation of a future "reply" method that works	1838	# rough implementation of a future "reply" method that works
784	# with dialog boxes.	1839	# with dialog boxes.
		1840	#TODO: the first argument must go, split into a $npc->reply_to ( method
785	sub cf::object::player::reply($$$;$) {	1841	sub cf::object::player::reply($$$;$) {
786	my ($self, $npc, $msg, $flags) = @_;	1842	my ($self, $npc, $msg, $flags) = @_;
787		1843
788	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1844	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
789		1845
…		…
793	$msg = $npc->name . " says: $msg" if $npc;	1849	$msg = $npc->name . " says: $msg" if $npc;
794	$self->message ($msg, $flags);	1850	$self->message ($msg, $flags);
795	}	1851	}
796	}	1852	}
797		1853
798	=item $player->ext_reply ($msgid, $msgtype, %msg)	1854	=item $player_object->may ("access")
799		1855
800	Sends an ext reply to the player.	1856	Returns wether the given player is authorized to access resource "access"
		1857	(e.g. "command_wizcast").
801		1858
802	=cut	1859	=cut
803		1860
804	sub cf::player::ext_reply($$$%) {	1861	sub cf::object::player::may {
		1862	my ($self, $access) = @_;
		1863
		1864	$self->flag (cf::FLAG_WIZ) ||
		1865	(ref $cf::CFG{"may_$access"}
		1866	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1867	: $cf::CFG{"may_$access"})
		1868	}
		1869
		1870	=item $player_object->enter_link
		1871
		1872	Freezes the player and moves him/her to a special map (C<{link}>).
		1873
		1874	The player should be reasonably safe there for short amounts of time. You
		1875	I<MUST> call C<leave_link> as soon as possible, though.
		1876
		1877	Will never block.
		1878
		1879	=item $player_object->leave_link ($map, $x, $y)
		1880
		1881	Moves the player out of the special C<{link}> map onto the specified
		1882	map. If the map is not valid (or omitted), the player will be moved back
		1883	to the location he/she was before the call to C<enter_link>, or, if that
		1884	fails, to the emergency map position.
		1885
		1886	Might block.
		1887
		1888	=cut
		1889
		1890	sub link_map {
		1891	unless ($LINK_MAP) {
		1892	$LINK_MAP = cf::map::find "{link}"
		1893	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1894	$LINK_MAP->load;
		1895	}
		1896
		1897	$LINK_MAP
		1898	}
		1899
		1900	sub cf::object::player::enter_link {
		1901	my ($self) = @_;
		1902
		1903	$self->deactivate_recursive;
		1904
		1905	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1906
		1907	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1908	if $self->map && $self->map->{path} ne "{link}";
		1909
		1910	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1911	}
		1912
		1913	sub cf::object::player::leave_link {
		1914	my ($self, $map, $x, $y) = @_;
		1915
		1916	return unless $self->contr->active;
		1917
		1918	my $link_pos = delete $self->{_link_pos};
		1919
		1920	unless ($map) {
		1921	# restore original map position
		1922	($map, $x, $y) = @{ $link_pos || [] };
		1923	$map = cf::map::find $map;
		1924
		1925	unless ($map) {
		1926	($map, $x, $y) = @$EMERGENCY_POSITION;
		1927	$map = cf::map::find $map
		1928	or die "FATAL: cannot load emergency map\n";
		1929	}
		1930	}
		1931
		1932	($x, $y) = (-1, -1)
		1933	unless (defined $x) && (defined $y);
		1934
		1935	# use -1 or undef as default coordinates, not 0, 0
		1936	($x, $y) = ($map->enter_x, $map->enter_y)
		1937	if $x <=0 && $y <= 0;
		1938
		1939	$map->load;
		1940	$map->load_diag;
		1941
		1942	return unless $self->contr->active;
		1943	$self->activate_recursive;
		1944
		1945	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1946	$self->enter_map ($map, $x, $y);
		1947	}
		1948
		1949	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1950
		1951	Moves the player to the given map-path and coordinates by first freezing
		1952	her, loading and preparing them map, calling the provided $check callback
		1953	that has to return the map if sucecssful, and then unfreezes the player on
		1954	the new (success) or old (failed) map position.
		1955
		1956	=cut
		1957
		1958	our $GOTOGEN;
		1959
		1960	sub cf::object::player::goto {
		1961	my ($self, $path, $x, $y, $check) = @_;
		1962
		1963	# do generation counting so two concurrent goto's will be executed in-order
		1964	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1965
		1966	$self->enter_link;
		1967
		1968	(async {
		1969	my $map = eval {
		1970	my $map = cf::map::find $path;
		1971
		1972	if ($map) {
		1973	$map = $map->customise_for ($self);
		1974	$map = $check->($map) if $check && $map;
		1975	} else {
		1976	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1977	}
		1978
		1979	$map
		1980	};
		1981
		1982	if ($@) {
		1983	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1984	LOG llevError | logBacktrace, Carp::longmess $@;
		1985	}
		1986
		1987	if ($gen == $self->{_goto_generation}) {
		1988	delete $self->{_goto_generation};
		1989	$self->leave_link ($map, $x, $y);
		1990	}
		1991	})->prio (1);
		1992	}
		1993
		1994	=item $player_object->enter_exit ($exit_object)
		1995
		1996	=cut
		1997
		1998	sub parse_random_map_params {
		1999	my ($spec) = @_;
		2000
		2001	my $rmp = { # defaults
		2002	xsize => (cf::rndm 15, 40),
		2003	ysize => (cf::rndm 15, 40),
		2004	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2005	#layout => string,
		2006	};
		2007
		2008	for (split /\n/, $spec) {
		2009	my ($k, $v) = split /\s+/, $_, 2;
		2010
		2011	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2012	}
		2013
		2014	$rmp
		2015	}
		2016
		2017	sub prepare_random_map {
		2018	my ($exit) = @_;
		2019
		2020	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2021
		2022	# all this does is basically replace the /! path by
		2023	# a new random map path (?random/...) with a seed
		2024	# that depends on the exit object
		2025
		2026	my $rmp = parse_random_map_params $exit->msg;
		2027
		2028	if ($exit->map) {
		2029	$rmp->{region} = $exit->region->name;
		2030	$rmp->{origin_map} = $exit->map->path;
		2031	$rmp->{origin_x} = $exit->x;
		2032	$rmp->{origin_y} = $exit->y;
		2033	}
		2034
		2035	$rmp->{random_seed} ||= $exit->random_seed;
		2036
		2037	my $data = cf::to_json $rmp;
		2038	my $md5 = Digest::MD5::md5_hex $data;
		2039	my $meta = "$RANDOMDIR/$md5.meta";
		2040
		2041	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2042	aio_write $fh, 0, (length $data), $data, 0;
		2043	undef $fh;
		2044	aio_rename "$meta~", $meta;
		2045
		2046	$exit->slaying ("?random/$md5");
		2047	$exit->msg (undef);
		2048	}
		2049	}
		2050
		2051	sub cf::object::player::enter_exit {
		2052	my ($self, $exit) = @_;
		2053
		2054	return unless $self->type == cf::PLAYER;
		2055
		2056	if ($exit->slaying eq "/!") {
		2057	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2058	# the problem is that $exit might not survive long enough
		2059	# so it needs to be done right now, right here
		2060	cf::sync_job { prepare_random_map $exit };
		2061	}
		2062
		2063	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2064	my $hp = $exit->stats->hp;
		2065	my $sp = $exit->stats->sp;
		2066
		2067	$self->enter_link;
		2068
		2069	(async {
		2070	$self->deactivate_recursive; # just to be sure
		2071	unless (eval {
		2072	$self->goto ($slaying, $hp, $sp);
		2073
		2074	1;
		2075	}) {
		2076	$self->message ("Something went wrong deep within the crossfire server. "
		2077	. "I'll try to bring you back to the map you were before. "
		2078	. "Please report this to the dungeon master!",
		2079	cf::NDI_UNIQUE | cf::NDI_RED);
		2080
		2081	warn "ERROR in enter_exit: $@";
		2082	$self->leave_link;
		2083	}
		2084	})->prio (1);
		2085	}
		2086
		2087	=head3 cf::client
		2088
		2089	=over 4
		2090
		2091	=item $client->send_drawinfo ($text, $flags)
		2092
		2093	Sends a drawinfo packet to the client. Circumvents output buffering so
		2094	should not be used under normal circumstances.
		2095
		2096	=cut
		2097
		2098	sub cf::client::send_drawinfo {
		2099	my ($self, $text, $flags) = @_;
		2100
		2101	utf8::encode $text;
		2102	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2103	}
		2104
		2105	=item $client->ext_event ($type, %msg)
		2106
		2107	Sends an exti event to the client.
		2108
		2109	=cut
		2110
		2111	sub cf::client::ext_event($$%) {
805	my ($self, $id, %msg) = @_;	2112	my ($self, $type, %msg) = @_;
806		2113
807	$msg{msgid} = $id;	2114	$msg{msgtype} = "event_$type";
808
809	$self->send ("ext " . to_json \%msg);	2115	$self->send_packet ("ext " . cf::to_json \%msg);
810	}	2116	}
		2117
		2118	=item $success = $client->query ($flags, "text", \&cb)
		2119
		2120	Queues a query to the client, calling the given callback with
		2121	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2122	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2123
		2124	Queries can fail, so check the return code. Or don't, as queries will become
		2125	reliable at some point in the future.
		2126
		2127	=cut
		2128
		2129	sub cf::client::query {
		2130	my ($self, $flags, $text, $cb) = @_;
		2131
		2132	return unless $self->state == ST_PLAYING
		2133	|| $self->state == ST_SETUP
		2134	|| $self->state == ST_CUSTOM;
		2135
		2136	$self->state (ST_CUSTOM);
		2137
		2138	utf8::encode $text;
		2139	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2140
		2141	$self->send_packet ($self->{query_queue}[0][0])
		2142	if @{ $self->{query_queue} } == 1;
		2143	}
		2144
		2145	cf::client->attach (
		2146	on_reply => sub {
		2147	my ($ns, $msg) = @_;
		2148
		2149	# this weird shuffling is so that direct followup queries
		2150	# get handled first
		2151	my $queue = delete $ns->{query_queue}
		2152	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2153
		2154	(shift @$queue)->[1]->($msg);
		2155	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2156
		2157	push @{ $ns->{query_queue} }, @$queue;
		2158
		2159	if (@{ $ns->{query_queue} } == @$queue) {
		2160	if (@$queue) {
		2161	$ns->send_packet ($ns->{query_queue}[0][0]);
		2162	} else {
		2163	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2164	}
		2165	}
		2166	},
		2167	);
		2168
		2169	=item $client->async (\&cb)
		2170
		2171	Create a new coroutine, running the specified callback. The coroutine will
		2172	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2173	or loss of connection).
		2174
		2175	=cut
		2176
		2177	sub cf::client::async {
		2178	my ($self, $cb) = @_;
		2179
		2180	my $coro = &Coro::async ($cb);
		2181
		2182	$coro->on_destroy (sub {
		2183	delete $self->{_coro}{$coro+0};
		2184	});
		2185
		2186	$self->{_coro}{$coro+0} = $coro;
		2187
		2188	$coro
		2189	}
		2190
		2191	cf::client->attach (
		2192	on_destroy => sub {
		2193	my ($ns) = @_;
		2194
		2195	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2196	},
		2197	);
811		2198
812	=back	2199	=back
813		2200
814	=cut
815
816	#############################################################################
817		2201
818	=head2 SAFE SCRIPTING	2202	=head2 SAFE SCRIPTING
819		2203
820	Functions that provide a safe environment to compile and execute	2204	Functions that provide a safe environment to compile and execute
821	snippets of perl code without them endangering the safety of the server	2205	snippets of perl code without them endangering the safety of the server
822	itself. Looping constructs, I/O operators and other built-in functionality	2206	itself. Looping constructs, I/O operators and other built-in functionality
823	is not available in the safe scripting environment, and the number of	2207	is not available in the safe scripting environment, and the number of
824	functions and methods that cna be called is greatly reduced.	2208	functions and methods that can be called is greatly reduced.
825		2209
826	=cut	2210	=cut
827		2211
828	our $safe = new Safe "safe";	2212	our $safe = new Safe "safe";
829	our $safe_hole = new Safe::Hole;	2213	our $safe_hole = new Safe::Hole;
…		…
834		2218
835	# here we export the classes and methods available to script code	2219	# here we export the classes and methods available to script code
836		2220
837	=pod	2221	=pod
838		2222
839	The following fucntions and emthods are available within a safe environment:	2223	The following functions and methods are available within a safe environment:
840		2224
841	cf::object contr pay_amount pay_player	2225	cf::object contr pay_amount pay_player map
842	cf::object::player player	2226	cf::object::player player
843	cf::player peaceful	2227	cf::player peaceful
		2228	cf::map trigger
844		2229
845	=cut	2230	=cut
846		2231
847	for (	2232	for (
848	["cf::object" => qw(contr pay_amount pay_player)],	2233	["cf::object" => qw(contr pay_amount pay_player map)],
849	["cf::object::player" => qw(player)],	2234	["cf::object::player" => qw(player)],
850	["cf::player" => qw(peaceful)],	2235	["cf::player" => qw(peaceful)],
		2236	["cf::map" => qw(trigger)],
851	) {	2237	) {
852	no strict 'refs';	2238	no strict 'refs';
853	my ($pkg, @funs) = @$_;	2239	my ($pkg, @funs) = @$_;
854	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2240	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
855	for @funs;	2241	for @funs;
…		…
927	#############################################################################	2313	#############################################################################
928		2314
929	=head2 EXTENSION DATABASE SUPPORT	2315	=head2 EXTENSION DATABASE SUPPORT
930		2316
931	Crossfire maintains a very simple database for extension use. It can	2317	Crossfire maintains a very simple database for extension use. It can
932	currently store anything that can be serialised using Storable, which	2318	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
933	excludes objects.	2319	convert to/from binary).
934		2320
935	The parameter C<$family> should best start with the name of the extension	2321	The parameter C<$family> should best start with the name of the extension
936	using it, it should be unique.	2322	using it, it should be unique.
937		2323
938	=over 4	2324	=over 4
939		2325
940	=item $hashref = cf::db_get $family
941
942	Return a hashref for use by the extension C<$family>, which can be
943	modified. After modifications, you have to call C<cf::db_dirty> or
944	C<cf::db_sync>.
945
946	=item $value = cf::db_get $family => $key	2326	=item $value = cf::db_get $family => $key
947		2327
948	Returns a single value from the database	2328	Returns a single value from the database.
949
950	=item cf::db_put $family => $hashref
951
952	Stores the given family hashref into the database. Updates are delayed, if
953	you want the data to be synced to disk immediately, use C<cf::db_sync>.
954		2329
955	=item cf::db_put $family => $key => $value	2330	=item cf::db_put $family => $key => $value
956		2331
957	Stores the given C<$value> in the family hash. Updates are delayed, if you	2332	Stores the given C<$value> in the family.
958	want the data to be synced to disk immediately, use C<cf::db_sync>.
959		2333
960	=item cf::db_dirty
961
962	Marks the database as dirty, to be updated at a later time.
963
964	=item cf::db_sync
965
966	Immediately write the database to disk I<if it is dirty>.
967
968	=cut	2334	=cut
969		2335
970	{	2336	our $DB;
971	my $db;
972	my $path = cf::localdir . "/database.pst";
973		2337
974	sub db_load() {	2338	sub db_init {
975	warn "loading database $path\n";#d# remove later	2339	unless ($DB) {
976	$db = stat $path ? Storable::retrieve $path : { };	2340	$DB = BDB::db_create $DB_ENV;
977	}
978		2341
979	my $pid;	2342	cf::sync_job {
		2343	eval {
		2344	$DB->set_flags (BDB::CHKSUM);
980		2345
981	sub db_save() {	2346	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
982	warn "saving database $path\n";#d# remove later	2347	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
983	waitpid $pid, 0 if $pid;	2348	cf::cleanup "db_open(db): $!" if $!;
984	if (0 == ($pid = fork)) {	2349	};
985	$db->{_meta}{version} = 1;	2350	cf::cleanup "db_open(db): $@" if $@;
986	Storable::nstore $db, "$path~";
987	rename "$path~", $path;
988	cf::_exit 0 if defined $pid;
989	}	2351	};
990	}
991
992	my $dirty;
993
994	sub db_sync() {
995	db_save if $dirty;
996	undef $dirty;
997	}
998
999	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1000	db_sync;
1001	});	2352	}
		2353	}
1002		2354
1003	sub db_dirty() {
1004	$dirty = 1;
1005	$idle->start;
1006	}
1007
1008	sub db_get($;$) {	2355	sub db_get($$) {
1009	@_ >= 2	2356	my $key = "$_[0]/$_[1]";
1010	? $db->{$_[0]}{$_[1]}
1011	: ($db->{$_[0]} ||= { })
1012	}
1013		2357
		2358	cf::sync_job {
		2359	BDB::db_get $DB, undef, $key, my $data;
		2360
		2361	$! ? ()
		2362	: $data
		2363	}
		2364	}
		2365
1014	sub db_put($$;$) {	2366	sub db_put($$$) {
1015	if (@_ >= 3) {	2367	BDB::dbreq_pri 4;
1016	$db->{$_[0]}{$_[1]} = $_[2];	2368	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1017	} else {	2369	}
1018	$db->{$_[0]} = $_[1];
1019	}
1020	db_dirty;
1021	}
1022		2370
1023	attach_global	2371	=item cf::cache $id => [$paths...], $processversion => $process
1024	prio => 10000,	2372
1025	on_cleanup => sub {	2373	Generic caching function that returns the value of the resource $id,
1026	db_sync;	2374	caching and regenerating as required.
		2375
		2376	This function can block.
		2377
		2378	=cut
		2379
		2380	sub cache {
		2381	my ($id, $src, $processversion, $process) = @_;
		2382
		2383	my $meta =
		2384	join "\x00",
		2385	$processversion,
		2386	map {
		2387	aio_stat $_
		2388	and Carp::croak "$_: $!";
		2389
		2390	($_, (stat _)[7,9])
		2391	} @$src;
		2392
		2393	my $dbmeta = db_get cache => "$id/meta";
		2394	if ($dbmeta ne $meta) {
		2395	# changed, we may need to process
		2396
		2397	my @data;
		2398	my $md5;
		2399
		2400	for (0 .. $#$src) {
		2401	0 <= aio_load $src->[$_], $data[$_]
		2402	or Carp::croak "$src->[$_]: $!";
1027	},	2403	}
		2404
		2405	# if processing is expensive, check
		2406	# checksum first
		2407	if (1) {
		2408	$md5 =
		2409	join "\x00",
		2410	$processversion,
		2411	map {
		2412	Coro::cede;
		2413	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2414	} 0.. $#$src;
		2415
		2416
		2417	my $dbmd5 = db_get cache => "$id/md5";
		2418	if ($dbmd5 eq $md5) {
		2419	db_put cache => "$id/meta", $meta;
		2420
		2421	return db_get cache => "$id/data";
		2422	}
		2423	}
		2424
		2425	my $t1 = Time::HiRes::time;
		2426	my $data = $process->(\@data);
		2427	my $t2 = Time::HiRes::time;
		2428
		2429	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2430
		2431	db_put cache => "$id/data", $data;
		2432	db_put cache => "$id/md5" , $md5;
		2433	db_put cache => "$id/meta", $meta;
		2434
		2435	return $data;
1028	;	2436	}
		2437
		2438	db_get cache => "$id/data"
		2439	}
		2440
		2441	=item fork_call { }, $args
		2442
		2443	Executes the given code block with the given arguments in a seperate
		2444	process, returning the results. Everything must be serialisable with
		2445	Coro::Storable. May, of course, block. Note that the executed sub may
		2446	never block itself or use any form of Event handling.
		2447
		2448	=cut
		2449
		2450	sub fork_call(&@) {
		2451	my ($cb, @args) = @_;
		2452
		2453	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2454	# or die "socketpair: $!";
		2455	pipe my $fh1, my $fh2
		2456	or die "pipe: $!";
		2457
		2458	if (my $pid = fork) {
		2459	close $fh2;
		2460
		2461	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2462	$res = Coro::Storable::thaw $res;
		2463
		2464	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2465
		2466	die $$res unless "ARRAY" eq ref $res;
		2467
		2468	return wantarray ? @$res : $res->[-1];
		2469	} else {
		2470	reset_signals;
		2471	local $SIG{__WARN__};
		2472	local $SIG{__DIE__};
		2473	eval {
		2474	close $fh1;
		2475
		2476	my @res = eval { $cb->(@args) };
		2477	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2478	};
		2479
		2480	warn $@ if $@;
		2481	_exit 0;
		2482	}
1029	}	2483	}
1030		2484
1031	#############################################################################	2485	#############################################################################
1032	# the server's main()	2486	# the server's init and main functions
		2487
		2488	sub load_facedata($) {
		2489	my ($path) = @_;
		2490
		2491	warn "loading facedata from $path\n";
		2492
		2493	my $facedata;
		2494	0 < aio_load $path, $facedata
		2495	or die "$path: $!";
		2496
		2497	$facedata = Coro::Storable::thaw $facedata;
		2498
		2499	$facedata->{version} == 2
		2500	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2501
		2502	{
		2503	my $faces = $facedata->{faceinfo};
		2504
		2505	while (my ($face, $info) = each %$faces) {
		2506	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2507	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2508	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2509	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2510	Coro::cede;
		2511	}
		2512
		2513	while (my ($face, $info) = each %$faces) {
		2514	next unless $info->{smooth};
		2515	my $idx = cf::face::find $face
		2516	or next;
		2517	if (my $smooth = cf::face::find $info->{smooth}) {
		2518	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2519	} else {
		2520	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2521	}
		2522	Coro::cede;
		2523	}
		2524	}
		2525
		2526	{
		2527	my $anims = $facedata->{animinfo};
		2528
		2529	while (my ($anim, $info) = each %$anims) {
		2530	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2531	Coro::cede;
		2532	}
		2533
		2534	cf::anim::invalidate_all; # d'oh
		2535	}
		2536
		2537	1
		2538	}
		2539
		2540	sub reload_regions {
		2541	load_resource_file "$MAPDIR/regions"
		2542	or die "unable to load regions file\n";
		2543	}
		2544
		2545	sub reload_facedata {
		2546	load_facedata "$DATADIR/facedata"
		2547	or die "unable to load facedata\n";
		2548	}
		2549
		2550	sub reload_archetypes {
		2551	load_resource_file "$DATADIR/archetypes"
		2552	or die "unable to load archetypes\n";
		2553	}
		2554
		2555	sub reload_treasures {
		2556	load_resource_file "$DATADIR/treasures"
		2557	or die "unable to load treasurelists\n";
		2558	}
		2559
		2560	sub reload_resources {
		2561	warn "reloading resource files...\n";
		2562
		2563	reload_regions;
		2564	reload_facedata;
		2565	reload_archetypes;
		2566	reload_treasures;
		2567
		2568	warn "finished reloading resource files\n";
		2569	}
		2570
		2571	sub init {
		2572	reload_resources;
		2573	}
1033		2574
1034	sub cfg_load {	2575	sub cfg_load {
1035	open my $fh, "<:utf8", cf::confdir . "/config"	2576	open my $fh, "<:utf8", "$CONFDIR/config"
1036	or return;	2577	or return;
1037		2578
1038	local $/;	2579	local $/;
1039	*CFG = YAML::Syck::Load <$fh>;	2580	*CFG = YAML::Syck::Load <$fh>;
		2581
		2582	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2583
		2584	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2585	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2586
		2587	if (exists $CFG{mlockall}) {
		2588	eval {
		2589	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2590	and die "WARNING: m(un)lockall failed: $!\n";
		2591	};
		2592	warn $@ if $@;
		2593	}
1040	}	2594	}
1041		2595
1042	sub main {	2596	sub main {
		2597	# we must not ever block the main coroutine
		2598	local $Coro::idle = sub {
		2599	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2600	(async {
		2601	Event::one_event;
		2602	})->prio (Coro::PRIO_MAX);
		2603	};
		2604
1043	cfg_load;	2605	cfg_load;
1044	db_load;	2606	db_init;
1045	load_extensions;	2607	load_extensions;
		2608
		2609	$TICK_WATCHER->start;
1046	Event::loop;	2610	Event::loop;
1047	}	2611	}
1048		2612
1049	#############################################################################	2613	#############################################################################
1050	# initialisation	2614	# initialisation and cleanup
1051		2615
1052	sub _perl_reload(&) {	2616	# install some emergency cleanup handlers
		2617	BEGIN {
		2618	for my $signal (qw(INT HUP TERM)) {
		2619	Event->signal (
		2620	reentrant => 0,
		2621	data => WF_AUTOCANCEL,
		2622	signal => $signal,
		2623	prio => 0,
		2624	cb => sub {
		2625	cf::cleanup "SIG$signal";
		2626	},
		2627	);
		2628	}
		2629	}
		2630
		2631	sub emergency_save() {
		2632	my $freeze_guard = cf::freeze_mainloop;
		2633
		2634	warn "enter emergency perl save\n";
		2635
		2636	cf::sync_job {
		2637	# use a peculiar iteration method to avoid tripping on perl
		2638	# refcount bugs in for. also avoids problems with players
		2639	# and maps saved/destroyed asynchronously.
		2640	warn "begin emergency player save\n";
		2641	for my $login (keys %cf::PLAYER) {
		2642	my $pl = $cf::PLAYER{$login} or next;
		2643	$pl->valid or next;
		2644	$pl->save;
		2645	}
		2646	warn "end emergency player save\n";
		2647
		2648	warn "begin emergency map save\n";
		2649	for my $path (keys %cf::MAP) {
		2650	my $map = $cf::MAP{$path} or next;
		2651	$map->valid or next;
		2652	$map->save;
		2653	}
		2654	warn "end emergency map save\n";
		2655
		2656	warn "begin emergency database checkpoint\n";
		2657	BDB::db_env_txn_checkpoint $DB_ENV;
		2658	warn "end emergency database checkpoint\n";
		2659	};
		2660
		2661	warn "leave emergency perl save\n";
		2662	}
		2663
		2664	sub post_cleanup {
1053	my ($msg) = @_;	2665	my ($make_core) = @_;
1054		2666
1055	$msg->("reloading...");	2667	warn Carp::longmess "post_cleanup backtrace"
		2668	if $make_core;
		2669	}
1056		2670
1057	eval {	2671	sub do_reload_perl() {
1058	# cancel all watchers	2672	# can/must only be called in main
		2673	if ($Coro::current != $Coro::main) {
		2674	warn "can only reload from main coroutine";
		2675	return;
		2676	}
		2677
		2678	warn "reloading...";
		2679
		2680	warn "entering sync_job";
		2681
		2682	cf::sync_job {
		2683	cf::write_runtime; # external watchdog should not bark
		2684	cf::emergency_save;
		2685	cf::write_runtime; # external watchdog should not bark
		2686
		2687	warn "syncing database to disk";
		2688	BDB::db_env_txn_checkpoint $DB_ENV;
		2689
		2690	# if anything goes wrong in here, we should simply crash as we already saved
		2691
		2692	warn "cancelling all WF_AUTOCANCEL watchers";
1059	$_->cancel for Event::all_watchers;	2693	for (Event::all_watchers) {
		2694	$_->cancel if $_->data & WF_AUTOCANCEL;
		2695	}
1060		2696
1061	# unload all extensions	2697	warn "flushing outstanding aio requests";
1062	for (@exts) {	2698	for (;;) {
1063	$msg->("unloading <$_>");	2699	BDB::flush;
1064	unload_extension $_;	2700	IO::AIO::flush;
		2701	Coro::cede;
		2702	last unless IO::AIO::nreqs || BDB::nreqs;
		2703	warn "iterate...";
		2704	}
		2705
		2706	++$RELOAD;
		2707
		2708	warn "cancelling all extension coros";
		2709	$_->cancel for values %EXT_CORO;
		2710	%EXT_CORO = ();
		2711
		2712	warn "removing commands";
		2713	%COMMAND = ();
		2714
		2715	warn "removing ext commands";
		2716	%EXTCMD = ();
		2717
		2718	warn "unloading/nuking all extensions";
		2719	for my $pkg (@EXTS) {
		2720	warn "... unloading $pkg";
		2721
		2722	if (my $cb = $pkg->can ("unload")) {
		2723	eval {
		2724	$cb->($pkg);
		2725	1
		2726	} or warn "$pkg unloaded, but with errors: $@";
1065	}	2727	}
1066		2728
		2729	warn "... nuking $pkg";
		2730	Symbol::delete_package $pkg;
		2731	}
		2732
1067	# unload all modules loaded from $LIBDIR	2733	warn "unloading all perl modules loaded from $LIBDIR";
1068	while (my ($k, $v) = each %INC) {	2734	while (my ($k, $v) = each %INC) {
1069	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2735	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1070		2736
1071	$msg->("removing <$k>");	2737	warn "... unloading $k";
1072	delete $INC{$k};	2738	delete $INC{$k};
1073		2739
1074	$k =~ s/\.pm$//;	2740	$k =~ s/\.pm$//;
1075	$k =~ s/\//::/g;	2741	$k =~ s/\//::/g;
1076		2742
…		…
1079	}	2745	}
1080		2746
1081	Symbol::delete_package $k;	2747	Symbol::delete_package $k;
1082	}	2748	}
1083		2749
1084	# sync database to disk
1085	cf::db_sync;
1086
1087	# get rid of safe::, as good as possible	2750	warn "getting rid of safe::, as good as possible";
1088	Symbol::delete_package "safe::$_"	2751	Symbol::delete_package "safe::$_"
1089	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2752	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1090		2753
1091	# remove register_script_function callbacks
1092	# TODO
1093
1094	# unload cf.pm "a bit"	2754	warn "unloading cf.pm \"a bit\"";
1095	delete $INC{"cf.pm"};	2755	delete $INC{"cf.pm"};
		2756	delete $INC{"cf/pod.pm"};
1096		2757
1097	# don't, removes xs symbols, too,	2758	# don't, removes xs symbols, too,
1098	# and global variables created in xs	2759	# and global variables created in xs
1099	#Symbol::delete_package __PACKAGE__;	2760	#Symbol::delete_package __PACKAGE__;
1100		2761
1101	# reload cf.pm	2762	warn "unload completed, starting to reload now";
		2763
1102	$msg->("reloading cf.pm");	2764	warn "reloading cf.pm";
1103	require cf;	2765	require cf;
		2766	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1104		2767
1105	# load config and database again	2768	warn "loading config and database again";
1106	cf::cfg_load;	2769	cf::cfg_load;
1107	cf::db_load;
1108		2770
1109	# load extensions	2771	warn "loading extensions";
1110	$msg->("load extensions");
1111	cf::load_extensions;	2772	cf::load_extensions;
1112		2773
1113	# reattach attachments to objects	2774	warn "reattaching attachments to objects/players";
1114	$msg->("reattach");	2775	_global_reattach; # objects, sockets
1115	_global_reattach;	2776	warn "reattaching attachments to maps";
		2777	reattach $_ for values %MAP;
		2778	warn "reattaching attachments to players";
		2779	reattach $_ for values %PLAYER;
		2780
		2781	warn "leaving sync_job";
		2782
		2783	1
		2784	} or do {
		2785	warn $@;
		2786	warn "error while reloading, exiting.";
		2787	exit 1;
1116	};	2788	};
1117	$msg->($@) if $@;
1118		2789
1119	$msg->("reloaded");	2790	warn "reloaded";
1120	};	2791	};
1121		2792
1122	sub perl_reload() {	2793	our $RELOAD_WATCHER; # used only during reload
1123	_perl_reload {	2794
1124	warn $_[0];	2795	sub reload_perl() {
1125	print "$_[0]\n";	2796	# doing reload synchronously and two reloads happen back-to-back,
		2797	# coro crashes during coro_state_free->destroy here.
		2798
		2799	$RELOAD_WATCHER ||= Event->timer (
		2800	reentrant => 0,
		2801	after => 0,
		2802	data => WF_AUTOCANCEL,
		2803	cb => sub {
		2804	do_reload_perl;
		2805	undef $RELOAD_WATCHER;
		2806	},
1126	};	2807	);
1127	}	2808	}
1128		2809
1129	register_command "perl-reload", 0, sub {	2810	register_command "reload" => sub {
1130	my ($who, $arg) = @_;	2811	my ($who, $arg) = @_;
1131		2812
1132	if ($who->flag (FLAG_WIZ)) {	2813	if ($who->flag (FLAG_WIZ)) {
1133	_perl_reload {	2814	$who->message ("reloading server.");
1134	warn $_[0];	2815	async { reload_perl };
1135	$who->message ($_[0]);	2816	}
		2817	};
		2818
		2819	unshift @INC, $LIBDIR;
		2820
		2821	my $bug_warning = 0;
		2822
		2823	our @WAIT_FOR_TICK;
		2824	our @WAIT_FOR_TICK_BEGIN;
		2825
		2826	sub wait_for_tick {
		2827	return unless $TICK_WATCHER->is_active;
		2828	return if $Coro::current == $Coro::main;
		2829
		2830	my $signal = new Coro::Signal;
		2831	push @WAIT_FOR_TICK, $signal;
		2832	$signal->wait;
		2833	}
		2834
		2835	sub wait_for_tick_begin {
		2836	return unless $TICK_WATCHER->is_active;
		2837	return if $Coro::current == $Coro::main;
		2838
		2839	my $signal = new Coro::Signal;
		2840	push @WAIT_FOR_TICK_BEGIN, $signal;
		2841	$signal->wait;
		2842	}
		2843
		2844	my $min = 1e6;#d#
		2845	my $avg = 10;
		2846	$TICK_WATCHER = Event->timer (
		2847	reentrant => 0,
		2848	parked => 1,
		2849	prio => 0,
		2850	at => $NEXT_TICK || $TICK,
		2851	data => WF_AUTOCANCEL,
		2852	cb => sub {
		2853	if ($Coro::current != $Coro::main) {
		2854	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2855	unless ++$bug_warning > 10;
		2856	return;
		2857	}
		2858
		2859	$NOW = $tick_start = Event::time;
		2860
		2861	cf::server_tick; # one server iteration
		2862
		2863	0 && sync_job {#d#
		2864	for(1..10) {
		2865	my $t = Event::time;
		2866	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2867	or die;
		2868
		2869	$map->width (50);
		2870	$map->height (50);
		2871	$map->alloc;
		2872	$map->_load_objects ("/tmp/x.map", 1);
		2873	my $t = Event::time - $t;
		2874
		2875	#next unless $t < 0.0013;#d#
		2876	if ($t < $min) {
		2877	$min = $t;
		2878	}
		2879	$avg = $avg * 0.99 + $t * 0.01;
		2880	}
		2881	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2882	exit 0;
		2883	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1136	};	2884	};
1137	}
1138	};
1139		2885
1140	register "<global>", __PACKAGE__;	2886	$RUNTIME += $TICK;
1141
1142	unshift @INC, $LIBDIR;
1143
1144	$TICK_WATCHER = Event->timer (
1145	prio => 1,
1146	at => $NEXT_TICK || 1,
1147	cb => sub {
1148	cf::server_tick; # one server iteration
1149
1150	my $NOW = Event::time;
1151	$NEXT_TICK += $TICK;	2887	$NEXT_TICK += $TICK;
1152		2888
		2889	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2890	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2891	Coro::async_pool {
		2892	write_runtime
		2893	or warn "ERROR: unable to write runtime file: $!";
		2894	};
		2895	}
		2896
		2897	# my $AFTER = Event::time;
		2898	# warn $AFTER - $NOW;#d#
		2899
		2900	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2901	$sig->send;
		2902	}
		2903	while (my $sig = shift @WAIT_FOR_TICK) {
		2904	$sig->send;
		2905	}
		2906
		2907	$NOW = Event::time;
		2908
1153	# if we are delayed by four ticks, skip them all	2909	# if we are delayed by four ticks or more, skip them all
1154	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2910	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1155		2911
1156	$TICK_WATCHER->at ($NEXT_TICK);	2912	$TICK_WATCHER->at ($NEXT_TICK);
1157	$TICK_WATCHER->start;	2913	$TICK_WATCHER->start;
		2914
		2915	$LOAD = ($NOW - $tick_start) / $TICK;
		2916	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2917
		2918	_post_tick;
		2919
		2920
1158	},	2921	},
1159	);	2922	);
1160		2923
		2924	{
		2925	BDB::max_poll_time $TICK * 0.1;
		2926	$BDB_POLL_WATCHER = Event->io (
		2927	reentrant => 0,
		2928	fd => BDB::poll_fileno,
		2929	poll => 'r',
		2930	prio => 0,
		2931	data => WF_AUTOCANCEL,
		2932	cb => \&BDB::poll_cb,
		2933	);
		2934	BDB::min_parallel 8;
		2935
		2936	BDB::set_sync_prepare {
		2937	my $status;
		2938	my $current = $Coro::current;
		2939	(
		2940	sub {
		2941	$status = $!;
		2942	$current->ready; undef $current;
		2943	},
		2944	sub {
		2945	Coro::schedule while defined $current;
		2946	$! = $status;
		2947	},
		2948	)
		2949	};
		2950
		2951	unless ($DB_ENV) {
		2952	$DB_ENV = BDB::db_env_create;
		2953
		2954	cf::sync_job {
		2955	eval {
		2956	BDB::db_env_open
		2957	$DB_ENV,
		2958	$BDBDIR,
		2959	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2960	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2961	0666;
		2962
		2963	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2964
		2965	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2966	$DB_ENV->set_lk_detect;
		2967	};
		2968
		2969	cf::cleanup "db_env_open(db): $@" if $@;
		2970	};
		2971	}
		2972	}
		2973
		2974	{
		2975	IO::AIO::min_parallel 8;
		2976
		2977	undef $Coro::AIO::WATCHER;
		2978	IO::AIO::max_poll_time $TICK * 0.1;
		2979	$AIO_POLL_WATCHER = Event->io (
		2980	reentrant => 0,
		2981	data => WF_AUTOCANCEL,
		2982	fd => IO::AIO::poll_fileno,
		2983	poll => 'r',
		2984	prio => 6,
		2985	cb => \&IO::AIO::poll_cb,
		2986	);
		2987	}
		2988
		2989	my $_log_backtrace;
		2990
		2991	sub _log_backtrace {
		2992	my ($msg, @addr) = @_;
		2993
		2994	$msg =~ s/\n//;
		2995
		2996	# limit the # of concurrent backtraces
		2997	if ($_log_backtrace < 2) {
		2998	++$_log_backtrace;
		2999	async {
		3000	my @bt = fork_call {
		3001	@addr = map { sprintf "%x", $_ } @addr;
		3002	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3003	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3004	or die "addr2line: $!";
		3005
		3006	my @funcs;
		3007	my @res = <$fh>;
		3008	chomp for @res;
		3009	while (@res) {
		3010	my ($func, $line) = splice @res, 0, 2, ();
		3011	push @funcs, "[$func] $line";
		3012	}
		3013
		3014	@funcs
		3015	};
		3016
		3017	LOG llevInfo, "[ABT] $msg\n";
		3018	LOG llevInfo, "[ABT] $_\n" for @bt;
		3019	--$_log_backtrace;
		3020	};
		3021	} else {
		3022	LOG llevInfo, "[ABT] $msg\n";
		3023	LOG llevInfo, "[ABT] [suppressed]\n";
		3024	}
		3025	}
		3026
		3027	# load additional modules
		3028	use cf::pod;
		3029
		3030	END { cf::emergency_save }
		3031
1161	1	3032	1
1162		3033

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