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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.85 by root, Mon Dec 11 22:56:57 2006 UTC vs.
Revision 1.269 by root, Tue May 22 21:35:26 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
10	use IO::AIO ();	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
11	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
12	use Time::HiRes;	31	use Time::HiRes;
13	use Event;	32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
14	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
15		41
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
18		44
19	use strict;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
20		48
21	our %COMMAND = ();	49	our %COMMAND = ();
22	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
23	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
24		56
25	_init_vars;	57	our $RELOAD; # number of reloads so far
26
27	our @EVENT;	58	our @EVENT;
28	our $LIBDIR = maps_directory "perl";
29		59
30	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(!)
31	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
32	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;
33		82
34	our %CFG;	83	our %CFG;
35		84
36	our $UPTIME; $UPTIME ||= time;	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;
37		115
38	#############################################################################	116	#############################################################################
39		117
40	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
41		119
…		…
43		121
44	=item $cf::UPTIME	122	=item $cf::UPTIME
45		123
46	The timestamp of the server start (so not actually an uptime).	124	The timestamp of the server start (so not actually an uptime).
47		125
48	=item $cf::LIBDIR	126	=item $cf::RUNTIME
49		127
50	The perl library directory, where extensions and cf-specific modules can	128	The time this server has run, starts at 0 and is increased by $cf::TICK on
51	be found. It will be added to C<@INC> automatically.	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.
52		143
53	=item $cf::TICK	144	=item $cf::TICK
54		145
55	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.
56		157
57	=item %cf::CFG	158	=item %cf::CFG
58		159
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	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.
61		168
62	=back	169	=back
63		170
64	=cut	171	=cut
65		172
66	BEGIN {	173	BEGIN {
67	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
69	$msg .= "\n"	177	$msg .= "\n"
70	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
71		179
72	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
73	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
74	};	184	};
75	}	185	}
76		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';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		193
79	# we bless all objects into (empty) derived classes to force a method lookup	194	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	195	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	196	for my $pkg (qw(
		197	cf::global cf::attachable
		198	cf::object cf::object::player
		199	cf::client cf::player
		200	cf::arch cf::living
		201	cf::map cf::party cf::region
		202	)) {
82	no strict 'refs';	203	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	204	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	205	}
85		206
86	$Event::DIED = sub {	207	$Event::DIED = sub {
87	warn "error in event callback: @_";	208	warn "error in event callback: @_";
88	};	209	};
89		210
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93
94	=head2 UTILITY FUNCTIONS	211	=head2 UTILITY FUNCTIONS
95		212
96	=over 4	213	=over 4
97		214
98	=cut	215	=item dumpval $ref
99		216
		217	=cut
		218
		219	sub dumpval {
		220	eval {
		221	local $SIG{__DIE__};
		222	my $d;
		223	if (1) {
		224	$d = new Data::Dumper([$_[0]], ["*var"]);
		225	$d->Terse(1);
		226	$d->Indent(2);
		227	$d->Quotekeys(0);
		228	$d->Useqq(1);
		229	#$d->Bless(...);
		230	$d->Seen($_[1]) if @_ > 1;
		231	$d = $d->Dump();
		232	}
		233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		234	$d
		235	} || "[unable to dump $_[0]: '$@']";
		236	}
		237
100	use JSON::Syck (); # TODO# replace by JSON::PC once working	238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
101		239
102	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
103		241
104	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
105		243
106	=cut
107
108	sub from_json($) {
109	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
110	JSON::Syck::Load $_[0]
111	}
112
113	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
114		245
115	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
116		247
117	=cut	248	=item cf::lock_wait $string
118		249
119	sub to_json($) {	250	Wait until the given lock is available. See cf::lock_acquire.
120	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	251
121	JSON::Syck::Dump $_[0]	252	=item my $lock = cf::lock_acquire $string
		253
		254	Wait until the given lock is available and then acquires it and returns
		255	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		256	for example when the coroutine gets canceled), the lock is automatically
		257	returned.
		258
		259	Lock names should begin with a unique identifier (for example, cf::map::find
		260	uses map_find and cf::map::load uses map_load).
		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
		266	=cut
		267
		268	our %LOCK;
		269
		270	sub lock_wait($) {
		271	my ($key) = @_;
		272
		273	# wait for lock, if any
		274	while ($LOCK{$key}) {
		275	push @{ $LOCK{$key} }, $Coro::current;
		276	Coro::schedule;
		277	}
		278	}
		279
		280	sub lock_acquire($) {
		281	my ($key) = @_;
		282
		283	# wait, to be sure we are not locked
		284	lock_wait $key;
		285
		286	$LOCK{$key} = [];
		287
		288	Coro::guard {
		289	# wake up all waiters, to be on the safe side
		290	$_->ready for @{ delete $LOCK{$key} };
		291	}
		292	}
		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
		300	sub freeze_mainloop {
		301	return unless $TICK_WATCHER->is_active;
		302
		303	my $guard = Coro::guard {
		304	$TICK_WATCHER->start;
		305	};
		306	$TICK_WATCHER->stop;
		307	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
		319
		320	=item cf::sync_job { BLOCK }
		321
		322	The design of crossfire+ requires that the main coro ($Coro::main) is
		323	always able to handle events or runnable, as crossfire+ is only partly
		324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		325
		326	If it must be done, put the blocking parts into C<sync_job>. This will run
		327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($job) = @_;
		335
		336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
		339	# this is the main coro, too bad, we have to block
		340	# till the operation succeeds, freezing the server :/
		341
		342	# TODO: use suspend/resume instead
		343	# (but this is cancel-safe)
		344	my $freeze_guard = freeze_mainloop;
		345
		346	my $busy = 1;
		347	my @res;
		348
		349	(async {
		350	@res = eval { $job->() };
		351	warn $@ if $@;
		352	undef $busy;
		353	})->prio (Coro::PRIO_MAX);
		354
		355	while ($busy) {
		356	Coro::cede or Event::one_event;
		357	}
		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
		366	wantarray ? @res : $res[0]
		367	} else {
		368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
		371	}
		372	}
		373
		374	=item $coro = cf::async_ext { BLOCK }
		375
		376	Like async, but this coro is automatically being canceled when the
		377	extension calling this is being unloaded.
		378
		379	=cut
		380
		381	sub async_ext(&) {
		382	my $cb = shift;
		383
		384	my $coro = &Coro::async ($cb);
		385
		386	$coro->on_destroy (sub {
		387	delete $EXT_CORO{$coro+0};
		388	});
		389	$EXT_CORO{$coro+0} = $coro;
		390
		391	$coro
		392	}
		393
		394	sub write_runtime {
		395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
		401	utime undef, undef, $fh;
		402	}
		403
		404	my $guard = cf::lock_acquire "write_runtime";
		405
		406	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		407	or return;
		408
		409	my $value = $cf::RUNTIME + 90 + 10;
		410	# 10 is the runtime save interval, for a monotonic clock
		411	# 60 allows for the watchdog to kill the server.
		412
		413	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		414	and return;
		415
		416	# always fsync - this file is important
		417	aio_fsync $fh
		418	and return;
		419
		420	# touch it again to show we are up-to-date
		421	utime undef, undef, $fh;
		422
		423	close $fh
		424	or return;
		425
		426	aio_rename "$runtime~", $runtime
		427	and return;
		428
		429	warn "runtime file written.\n";#d#
		430
		431	1
		432	}
		433
		434	=item cf::datalog type => key => value, ...
		435
		436	Log a datalog packet of the given type with the given key-value pairs.
		437
		438	=cut
		439
		440	sub datalog($@) {
		441	my ($type, %kv) = @_;
		442	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
122	}	443	}
123		444
124	=back	445	=back
125		446
126	=cut	447	=cut
127		448
128	#############################################################################	449	#############################################################################
129		450
130	=head2 EVENTS AND OBJECT ATTACHMENTS	451	=head2 ATTACHABLE OBJECTS
		452
		453	Many objects in crossfire are so-called attachable objects. That means you can
		454	attach callbacks/event handlers (a collection of which is called an "attachment")
		455	to it. All such attachable objects support the following methods.
		456
		457	In the following description, CLASS can be any of C<global>, C<object>
		458	C<player>, C<client> or C<map> (i.e. the attachable objects in
		459	crossfire+).
131		460
132	=over 4	461	=over 4
133		462
134	=item $object->attach ($attachment, key => $value...)
135
136	=item $object->detach ($attachment)
137
138	Attach/detach a pre-registered attachment to an object.
139
140	=item $player->attach ($attachment, key => $value...)
141
142	=item $player->detach ($attachment)
143
144	Attach/detach a pre-registered attachment to a player.
145
146	=item $map->attach ($attachment, key => $value...)	463	=item $attachable->attach ($attachment, key => $value...)
147		464
148	=item $map->detach ($attachment)	465	=item $attachable->detach ($attachment)
149		466
150	Attach/detach a pre-registered attachment to a map.	467	Attach/detach a pre-registered attachment to a specific object and give it
		468	the specified key/value pairs as arguments.
151		469
152	=item $bool = $object->attached ($name)	470	Example, attach a minesweeper attachment to the given object, making it a
		471	10x10 minesweeper game:
153		472
154	=item $bool = $player->attached ($name)	473	$obj->attach (minesweeper => width => 10, height => 10);
155		474
156	=item $bool = $map->attached ($name)	475	=item $bool = $attachable->attached ($name)
157		476
158	Checks wether the named attachment is currently attached to the object.	477	Checks wether the named attachment is currently attached to the object.
159		478
160	=item cf::attach_global ...	479	=item cf::CLASS->attach ...
161		480
162	Attach handlers for global events.	481	=item cf::CLASS->detach ...
163		482
164	This and all following C<attach_*>-functions expect any number of the	483	Define an anonymous attachment and attach it to all objects of the given
165	following handler/hook descriptions:	484	CLASS. See the next function for an explanation of its arguments.
		485
		486	You can attach to global events by using the C<cf::global> class.
		487
		488	Example, log all player logins:
		489
		490	cf::player->attach (
		491	on_login => sub {
		492	my ($pl) = @_;
		493	...
		494	},
		495	);
		496
		497	Example, attach to the jeweler skill:
		498
		499	cf::object->attach (
		500	type => cf::SKILL,
		501	subtype => cf::SK_JEWELER,
		502	on_use_skill => sub {
		503	my ($sk, $ob, $part, $dir, $msg) = @_;
		504	...
		505	},
		506	);
		507
		508	=item cf::CLASS::attachment $name, ...
		509
		510	Register an attachment by C<$name> through which attachable objects of the
		511	given CLASS can refer to this attachment.
		512
		513	Some classes such as crossfire maps and objects can specify attachments
		514	that are attached at load/instantiate time, thus the need for a name.
		515
		516	These calls expect any number of the following handler/hook descriptions:
166		517
167	=over 4	518	=over 4
168		519
169	=item prio => $number	520	=item prio => $number
170		521
…		…
172	by another C<prio> setting). Lower priority handlers get executed	523	by another C<prio> setting). Lower priority handlers get executed
173	earlier. The default priority is C<0>, and many built-in handlers are	524	earlier. The default priority is C<0>, and many built-in handlers are
174	registered at priority C<-1000>, so lower priorities should not be used	525	registered at priority C<-1000>, so lower priorities should not be used
175	unless you know what you are doing.	526	unless you know what you are doing.
176		527
		528	=item type => $type
		529
		530	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		531	given type of objects only (the additional parameter C<subtype> can be
		532	used to further limit to the given subtype).
		533
177	=item on_I<event> => \&cb	534	=item on_I<event> => \&cb
178		535
179	Call the given code reference whenever the named event happens (event is	536	Call the given code reference whenever the named event happens (event is
180	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	537	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
181	handlers are recognised generally depends on the type of object these	538	handlers are recognised generally depends on the type of object these
…		…
190	package and register them. Only handlers for eevents supported by the	547	package and register them. Only handlers for eevents supported by the
191	object/class are recognised.	548	object/class are recognised.
192		549
193	=back	550	=back
194		551
195	=item cf::attach_to_type $object_type, $subtype, ...	552	Example, define an attachment called "sockpuppet" that calls the given
		553	event handler when a monster attacks:
196		554
197	Attach handlers for a specific object type (e.g. TRANSPORT) and	555	cf::object::attachment sockpuppet =>
198	subtype. If C<$subtype> is zero or undef, matches all objects of the given	556	on_skill_attack => sub {
199	type.	557	my ($self, $victim) = @_;
200		558	...
201	=item cf::attach_to_objects ...
202
203	Attach handlers to all objects. Do not use this except for debugging or
204	very rare events, as handlers are (obviously) called for I<all> objects in
205	the game.
206
207	=item cf::attach_to_players ...
208
209	Attach handlers to all players.
210
211	=item cf::attach_to_maps ...
212
213	Attach handlers to all maps.
214
215	=item cf:register_attachment $name, ...
216
217	Register an attachment by name through which objects can refer to this
218	attachment.
219
220	=item cf:register_player_attachment $name, ...
221
222	Register an attachment by name through which players can refer to this
223	attachment.
224
225	=item cf:register_map_attachment $name, ...
226
227	Register an attachment by name through which maps can refer to this
228	attachment.
229
230	=cut
231
232	# the following variables are defined in .xs and must not be re-created
233	our @CB_GLOBAL = (); # registry for all global events
234	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
235	our @CB_PLAYER = ();
236	our @CB_TYPE = (); # registry for type (cf-object class) based events
237	our @CB_MAP = ();
238
239	my %attachment;
240
241	sub _attach_cb($\%$$$) {
242	my ($registry, $undo, $event, $prio, $cb) = @_;
243
244	use sort 'stable';
245
246	$cb = [$prio, $cb];
247
248	@{$registry->[$event]} = sort
249	{ $a->[0] cmp $b->[0] }
250	@{$registry->[$event] || []}, $cb;
251
252	push @{$undo->{cb}}, [$event, $cb];
253	}
254
255	# attach handles attaching event callbacks
256	# the only thing the caller has to do is pass the correct
257	# registry (== where the callback attaches to).
258	sub _attach(\@$@) {
259	my ($registry, $klass, @arg) = @_;
260
261	my $prio = 0;
262
263	my %undo = (
264	registry => $registry,
265	cb => [],
266	);
267
268	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
269
270	while (@arg) {
271	my $type = shift @arg;
272
273	if ($type eq "prio") {
274	$prio = shift @arg;
275
276	} elsif ($type eq "package") {
277	my $pkg = shift @arg;
278
279	while (my ($name, $id) = each %cb_id) {
280	if (my $cb = $pkg->can ($name)) {
281	_attach_cb $registry, %undo, $id, $prio, $cb;
282	}
283	}	559	}
284
285	} elsif (exists $cb_id{$type}) {
286	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
287
288	} elsif (ref $type) {
289	warn "attaching objects not supported, ignoring.\n";
290
291	} else {
292	shift @arg;
293	warn "attach argument '$type' not supported, ignoring.\n";
294	}
295	}
296
297	\%undo
298	}
299
300	sub _attach_attachment {
301	my ($obj, $name, %arg) = @_;
302
303	return if exists $obj->{_attachment}{$name};
304
305	my $res;
306
307	if (my $attach = $attachment{$name}) {
308	my $registry = $obj->registry;
309
310	for (@$attach) {
311	my ($klass, @attach) = @$_;
312	$res = _attach @$registry, $klass, @attach;
313	}
314
315	$obj->{$name} = \%arg;
316	} else {
317	warn "object uses attachment '$name' that is not available, postponing.\n";
318	}
319
320	$obj->{_attachment}{$name} = undef;
321
322	$res->{attachment} = $name;
323	$res
324	}
325
326	*cf::object::attach =
327	*cf::player::attach =
328	*cf::map::attach = sub {
329	my ($obj, $name, %arg) = @_;
330
331	_attach_attachment $obj, $name, %arg;
332	};
333
334	# all those should be optimised
335	*cf::object::detach =
336	*cf::player::detach =
337	*cf::map::detach = sub {
338	my ($obj, $name) = @_;
339
340	delete $obj->{_attachment}{$name};
341	reattach ($obj);
342	};
343
344	*cf::object::attached =
345	*cf::player::attached =
346	*cf::map::attached = sub {
347	my ($obj, $name) = @_;
348
349	exists $obj->{_attachment}{$name}
350	};
351
352	sub attach_global {
353	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
354	}
355
356	sub attach_to_type {
357	my $type = shift;
358	my $subtype = shift;
359
360	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_objects {
364	_attach @CB_OBJECT, KLASS_OBJECT, @_
365	}
366
367	sub attach_to_players {
368	_attach @CB_PLAYER, KLASS_PLAYER, @_
369	}
370
371	sub attach_to_maps {
372	_attach @CB_MAP, KLASS_MAP, @_
373	}
374
375	sub register_attachment {
376	my $name = shift;
377
378	$attachment{$name} = [[KLASS_OBJECT, @_]];
379	}
380
381	sub register_player_attachment {
382	my $name = shift;
383
384	$attachment{$name} = [[KLASS_PLAYER, @_]];
385	}
386
387	sub register_map_attachment {
388	my $name = shift;
389
390	$attachment{$name} = [[KLASS_MAP, @_]];
391	}
392
393	our $override;
394	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
395
396	sub override {
397	$override = 1;
398	@invoke_results = ();
399	}
400
401	sub do_invoke {
402	my $event = shift;
403	my $callbacks = shift;
404
405	@invoke_results = ();
406
407	local $override;
408
409	for (@$callbacks) {
410	eval { &{$_->[1]} };
411
412	if ($@) {
413	warn "$@";
414	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
415	override;
416	}
417
418	return 1 if $override;
419	}
420
421	0	560	}
422	}
423		561
424	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	562	=item $attachable->valid
425
426	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
427
428	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
429
430	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
431
432	Generate a global/object/player/map-specific event with the given arguments.
433
434	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
435	removed in future versions), and there is no public API to access override
436	results (if you must, access C<@cf::invoke_results> directly).
437
438	=back
439
440	=cut
441
442	#############################################################################
443
444	=head2 METHODS VALID FOR ALL CORE OBJECTS
445
446	=over 4
447
448	=item $object->valid, $player->valid, $map->valid
449		563
450	Just because you have a perl object does not mean that the corresponding	564	Just because you have a perl object does not mean that the corresponding
451	C-level object still exists. If you try to access an object that has no	565	C-level object still exists. If you try to access an object that has no
452	valid C counterpart anymore you get an exception at runtime. This method	566	valid C counterpart anymore you get an exception at runtime. This method
453	can be used to test for existence of the C object part without causing an	567	can be used to test for existence of the C object part without causing an
454	exception.	568	exception.
455		569
		570	=cut
		571
		572	# the following variables are defined in .xs and must not be re-created
		573	our @CB_GLOBAL = (); # registry for all global events
		574	our @CB_ATTACHABLE = (); # registry for all attachables
		575	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		576	our @CB_PLAYER = ();
		577	our @CB_CLIENT = ();
		578	our @CB_TYPE = (); # registry for type (cf-object class) based events
		579	our @CB_MAP = ();
		580
		581	my %attachment;
		582
		583	sub cf::attachable::thawer_merge {
		584	# simply override everything except _meta
		585	local $_[0]{_meta};
		586	%{$_[0]} = %{$_[1]};
		587	}
		588
		589	sub _attach_cb($$$$) {
		590	my ($registry, $event, $prio, $cb) = @_;
		591
		592	use sort 'stable';
		593
		594	$cb = [$prio, $cb];
		595
		596	@{$registry->[$event]} = sort
		597	{ $a->[0] cmp $b->[0] }
		598	@{$registry->[$event] || []}, $cb;
		599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		603
		604	# attach handles attaching event callbacks
		605	# the only thing the caller has to do is pass the correct
		606	# registry (== where the callback attaches to).
		607	sub _attach {
		608	my ($registry, $klass, @arg) = @_;
		609
		610	my $object_type;
		611	my $prio = 0;
		612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
		619	while (@arg) {
		620	my $type = shift @arg;
		621
		622	if ($type eq "prio") {
		623	$prio = shift @arg;
		624
		625	} elsif ($type eq "type") {
		626	$object_type = shift @arg;
		627	$registry = $CB_TYPE[$object_type] ||= [];
		628
		629	} elsif ($type eq "subtype") {
		630	defined $object_type or Carp::croak "subtype specified without type";
		631	my $object_subtype = shift @arg;
		632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		633
		634	} elsif ($type eq "package") {
		635	my $pkg = shift @arg;
		636
		637	while (my ($name, $id) = each %cb_id) {
		638	if (my $cb = $pkg->can ($name)) {
		639	_attach_cb $registry, $id, $prio, $cb;
		640	}
		641	}
		642
		643	} elsif (exists $cb_id{$type}) {
		644	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		645
		646	} elsif (ref $type) {
		647	warn "attaching objects not supported, ignoring.\n";
		648
		649	} else {
		650	shift @arg;
		651	warn "attach argument '$type' not supported, ignoring.\n";
		652	}
		653	}
		654	}
		655
		656	sub _object_attach {
		657	my ($obj, $name, %arg) = @_;
		658
		659	return if exists $obj->{_attachment}{$name};
		660
		661	if (my $attach = $attachment{$name}) {
		662	my $registry = $obj->registry;
		663
		664	for (@$attach) {
		665	my ($klass, @attach) = @$_;
		666	_attach $registry, $klass, @attach;
		667	}
		668
		669	$obj->{$name} = \%arg;
		670	} else {
		671	warn "object uses attachment '$name' that is not available, postponing.\n";
		672	}
		673
		674	$obj->{_attachment}{$name} = undef;
		675	}
		676
		677	sub cf::attachable::attach {
		678	if (ref $_[0]) {
		679	_object_attach @_;
		680	} else {
		681	_attach shift->_attach_registry, @_;
		682	}
		683	_recalc_want;
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
		688	my ($obj, $name) = @_;
		689
		690	if (ref $obj) {
		691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	_recalc_want;
		697	};
		698
		699	sub cf::attachable::attached {
		700	my ($obj, $name) = @_;
		701
		702	exists $obj->{_attachment}{$name}
		703	}
		704
		705	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		706	eval "#line " . __LINE__ . " 'cf.pm'
		707	sub cf::\L$klass\E::_attach_registry {
		708	(\\\@CB_$klass, KLASS_$klass)
		709	}
		710
		711	sub cf::\L$klass\E::attachment {
		712	my \$name = shift;
		713
		714	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		715	}
		716	";
		717	die if $@;
		718	}
		719
		720	our $override;
		721	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		722
		723	sub override {
		724	$override = 1;
		725	@invoke_results = ();
		726	}
		727
		728	sub do_invoke {
		729	my $event = shift;
		730	my $callbacks = shift;
		731
		732	@invoke_results = ();
		733
		734	local $override;
		735
		736	for (@$callbacks) {
		737	eval { &{$_->[1]} };
		738
		739	if ($@) {
		740	warn "$@";
		741	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		742	override;
		743	}
		744
		745	return 1 if $override;
		746	}
		747
		748	0
		749	}
		750
		751	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		752
		753	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		754
		755	Generate an object-specific event with the given arguments.
		756
		757	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		758	removed in future versions), and there is no public API to access override
		759	results (if you must, access C<@cf::invoke_results> directly).
		760
456	=back	761	=back
457		762
458	=cut	763	=cut
459
460	*cf::object::valid =
461	*cf::player::valid =
462	*cf::map::valid = \&cf::_valid;
463		764
464	#############################################################################	765	#############################################################################
465	# object support	766	# object support
466		767
467	sub instantiate {
468	my ($obj, $data) = @_;
469
470	$data = from_json $data;
471
472	for (@$data) {
473	my ($name, $args) = @$_;
474
475	$obj->attach ($name, %{$args || {} });
476	}
477	}
478
479	# basically do the same as instantiate, without calling instantiate
480	sub reattach {	768	sub reattach {
		769	# basically do the same as instantiate, without calling instantiate
481	my ($obj) = @_;	770	my ($obj) = @_;
		771
		772	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		773
482	my $registry = $obj->registry;	774	my $registry = $obj->registry;
483		775
484	@$registry = ();	776	@$registry = ();
485		777
486	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	778	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
487		779
488	for my $name (keys %{ $obj->{_attachment} || {} }) {	780	for my $name (keys %{ $obj->{_attachment} || {} }) {
489	if (my $attach = $attachment{$name}) {	781	if (my $attach = $attachment{$name}) {
490	for (@$attach) {	782	for (@$attach) {
491	my ($klass, @attach) = @$_;	783	my ($klass, @attach) = @$_;
492	_attach @$registry, $klass, @attach;	784	_attach $registry, $klass, @attach;
493	}	785	}
494	} else {	786	} else {
495	warn "object uses attachment '$name' that is not available, postponing.\n";	787	warn "object uses attachment '$name' that is not available, postponing.\n";
496	}	788	}
497	}	789	}
498	}	790	}
499		791
500	sub object_freezer_save {	792	cf::attachable->attach (
501	my ($filename, $rdata, $objs) = @_;
502
503	if (length $$rdata) {
504	warn sprintf "saving %s (%d,%d)\n",
505	$filename, length $$rdata, scalar @$objs;
506
507	if (open my $fh, ">:raw", "$filename~") {
508	chmod SAVE_MODE, $fh;
509	syswrite $fh, $$rdata;
510	close $fh;
511
512	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
513	chmod SAVE_MODE, $fh;
514	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
515	close $fh;
516	rename "$filename.pst~", "$filename.pst";
517	} else {
518	unlink "$filename.pst";
519	}
520
521	rename "$filename~", $filename;
522	} else {
523	warn "FATAL: $filename~: $!\n";
524	}
525	} else {
526	unlink $filename;
527	unlink "$filename.pst";
528	}
529	}
530
531	sub object_freezer_as_string {
532	my ($rdata, $objs) = @_;
533
534	use Data::Dumper;
535
536	$$rdata . Dumper $objs
537	}
538
539	sub object_thawer_load {
540	my ($filename) = @_;
541
542	local $/;
543
544	my $av;
545
546	#TODO: use sysread etc.
547	if (open my $data, "<:raw:perlio", $filename) {
548	$data = <$data>;
549	if (open my $pst, "<:raw:perlio", "$filename.pst") {
550	$av = eval { (Storable::thaw <$pst>)->{objs} };
551	}
552	return ($data, $av);
553	}
554
555	()
556	}
557
558	attach_to_objects
559	prio => -1000000,	793	prio => -1000000,
		794	on_instantiate => sub {
		795	my ($obj, $data) = @_;
		796
		797	$data = from_json $data;
		798
		799	for (@$data) {
		800	my ($name, $args) = @$_;
		801
		802	$obj->attach ($name, %{$args || {} });
		803	}
		804	},
		805	on_reattach => \&reattach,
560	on_clone => sub {	806	on_clone => sub {
561	my ($src, $dst) = @_;	807	my ($src, $dst) = @_;
562		808
563	@{$dst->registry} = @{$src->registry};	809	@{$dst->registry} = @{$src->registry};
564		810
565	%$dst = %$src;	811	%$dst = %$src;
566		812
567	%{$dst->{_attachment}} = %{$src->{_attachment}}	813	%{$dst->{_attachment}} = %{$src->{_attachment}}
568	if exists $src->{_attachment};	814	if exists $src->{_attachment};
569	},	815	},
570	;	816	);
		817
		818	sub object_freezer_save {
		819	my ($filename, $rdata, $objs) = @_;
		820
		821	sync_job {
		822	if (length $$rdata) {
		823	warn sprintf "saving %s (%d,%d)\n",
		824	$filename, length $$rdata, scalar @$objs;
		825
		826	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		827	chmod SAVE_MODE, $fh;
		828	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		829	aio_fsync $fh if $cf::USE_FSYNC;
		830	close $fh;
		831
		832	if (@$objs) {
		833	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		834	chmod SAVE_MODE, $fh;
		835	my $data = Storable::nfreeze { version => 1, objs => $objs };
		836	aio_write $fh, 0, (length $data), $data, 0;
		837	aio_fsync $fh if $cf::USE_FSYNC;
		838	close $fh;
		839	aio_rename "$filename.pst~", "$filename.pst";
		840	}
		841	} else {
		842	aio_unlink "$filename.pst";
		843	}
		844
		845	aio_rename "$filename~", $filename;
		846	} else {
		847	warn "FATAL: $filename~: $!\n";
		848	}
		849	} else {
		850	aio_unlink $filename;
		851	aio_unlink "$filename.pst";
		852	}
		853	}
		854	}
		855
		856	sub object_freezer_as_string {
		857	my ($rdata, $objs) = @_;
		858
		859	use Data::Dumper;
		860
		861	$$rdata . Dumper $objs
		862	}
		863
		864	sub object_thawer_load {
		865	my ($filename) = @_;
		866
		867	my ($data, $av);
		868
		869	(aio_load $filename, $data) >= 0
		870	or return;
		871
		872	unless (aio_stat "$filename.pst") {
		873	(aio_load "$filename.pst", $av) >= 0
		874	or return;
		875	$av = eval { (Storable::thaw $av)->{objs} };
		876	}
		877
		878	warn sprintf "loading %s (%d)\n",
		879	$filename, length $data, scalar @{$av || []};#d#
		880	return ($data, $av);
		881	}
571		882
572	#############################################################################	883	#############################################################################
573	# command handling &c	884	# command handling &c
574		885
575	=item cf::register_command $name => \&callback($ob,$args);	886	=item cf::register_command $name => \&callback($ob,$args);
…		…
598	=cut	909	=cut
599		910
600	sub register_extcmd {	911	sub register_extcmd {
601	my ($name, $cb) = @_;	912	my ($name, $cb) = @_;
602		913
603	my $caller = caller;
604	#warn "registering extcmd '$name' to '$caller'";
605
606	$EXTCMD{$name} = [$cb, $caller];	914	$EXTCMD{$name} = $cb;
607	}	915	}
608		916
609	attach_to_players	917	cf::player->attach (
610	on_command => sub {	918	on_command => sub {
611	my ($pl, $name, $params) = @_;	919	my ($pl, $name, $params) = @_;
612		920
613	my $cb = $COMMAND{$name}	921	my $cb = $COMMAND{$name}
614	or return;	922	or return;
…		…
624		932
625	my $msg = eval { from_json $buf };	933	my $msg = eval { from_json $buf };
626		934
627	if (ref $msg) {	935	if (ref $msg) {
628	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
629	if (my %reply = $cb->[0]->($pl, $msg)) {	937	if (my %reply = $cb->($pl, $msg)) {
630	$pl->ext_reply ($msg->{msgid}, %reply);	938	$pl->ext_reply ($msg->{msgid}, %reply);
631	}	939	}
632	}	940	}
633	} else {	941	} else {
634	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
635	}	943	}
636		944
637	cf::override;	945	cf::override;
638	},	946	},
639	;	947	);
640
641	sub register {
642	my ($base, $pkg) = @_;
643
644	#TODO
645	}
646		948
647	sub load_extension {	949	sub load_extension {
648	my ($path) = @_;	950	my ($path) = @_;
649		951
650	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	952	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
651	my $base = $1;	953	my $base = $1;
652	my $pkg = $1;	954	my $pkg = $1;
653	$pkg =~ s/[^[:word:]]/_/g;	955	$pkg =~ s/[^[:word:]]/_/g;
654	$pkg = "ext::$pkg";	956	$pkg = "ext::$pkg";
655		957
656	warn "loading '$path' into '$pkg'\n";	958	warn "... loading '$path' into '$pkg'\n";
657		959
658	open my $fh, "<:utf8", $path	960	open my $fh, "<:utf8", $path
659	or die "$path: $!";	961	or die "$path: $!";
660		962
661	my $source =	963	my $source =
662	"package $pkg; use strict; use utf8;\n"	964	"package $pkg; use strict; use utf8;\n"
663	. "#line 1 \"$path\"\n{\n"	965	. "#line 1 \"$path\"\n{\n"
664	. (do { local $/; <$fh> })	966	. (do { local $/; <$fh> })
665	. "\n};\n1";	967	. "\n};\n1";
666		968
667	eval $source	969	unless (eval $source) {
668	or die $@ ? "$path: $@\n"	970	my $msg = $@ ? "$path: $@\n"
669	: "extension disabled.\n";	971	: "extension disabled.\n";
670		972	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
671	push @exts, $pkg;	973	warn $@;
672	$ext_pkg{$base} = $pkg;	974	warn "mandatory extension failed to load, exiting.\n";
673		975	exit 1;
674	# no strict 'refs';	976	}
675	# @{"$pkg\::ISA"} = ext::;	977	die $@;
676
677	register $base, $pkg;
678	}
679
680	sub unload_extension {
681	my ($pkg) = @_;
682
683	warn "removing extension $pkg\n";
684
685	# remove hooks
686	#TODO
687	# for my $idx (0 .. $#PLUGIN_EVENT) {
688	# delete $hook[$idx]{$pkg};
689	# }	978	}
690		979
691	# remove commands	980	push @EXTS, $pkg;
692	for my $name (keys %COMMAND) {
693	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
694
695	if (@cb) {
696	$COMMAND{$name} = \@cb;
697	} else {
698	delete $COMMAND{$name};
699	}
700	}
701
702	# remove extcmds
703	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
704	delete $EXTCMD{$name};
705	}
706
707	if (my $cb = $pkg->can ("unload")) {
708	eval {
709	$cb->($pkg);
710	1
711	} or warn "$pkg unloaded, but with errors: $@";
712	}
713
714	Symbol::delete_package $pkg;
715	}	981	}
716		982
717	sub load_extensions {	983	sub load_extensions {
718	my $LIBDIR = maps_directory "perl";
719
720	for my $ext (<$LIBDIR/*.ext>) {	984	for my $ext (<$LIBDIR/*.ext>) {
721	next unless -r $ext;	985	next unless -r $ext;
722	eval {	986	eval {
723	load_extension $ext;	987	load_extension $ext;
724	1	988	1
725	} or warn "$ext not loaded: $@";	989	} or warn "$ext not loaded: $@";
726	}	990	}
727	}	991	}
728		992
729	#############################################################################	993	#############################################################################
730	# load/save/clean perl data associated with a map
731		994
732	*cf::mapsupport::on_clean = sub {	995	=head2 CORE EXTENSIONS
		996
		997	Functions and methods that extend core crossfire objects.
		998
		999	=cut
		1000
		1001	package cf::player;
		1002
		1003	use Coro::AIO;
		1004
		1005	=head3 cf::player
		1006
		1007	=over 4
		1008
		1009	=item cf::player::find $login
		1010
		1011	Returns the given player object, loading it if necessary (might block).
		1012
		1013	=cut
		1014
		1015	sub playerdir($) {
		1016	"$PLAYERDIR/"
		1017	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1018	}
		1019
		1020	sub path($) {
		1021	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1022
		1023	(playerdir $login) . "/playerdata"
		1024	}
		1025
		1026	sub find_active($) {
		1027	$cf::PLAYER{$_[0]}
		1028	and $cf::PLAYER{$_[0]}->active
		1029	and $cf::PLAYER{$_[0]}
		1030	}
		1031
		1032	sub exists($) {
		1033	my ($login) = @_;
		1034
		1035	$cf::PLAYER{$login}
		1036	or cf::sync_job { !aio_stat path $login }
		1037	}
		1038
		1039	sub find($) {
		1040	return $cf::PLAYER{$_[0]} || do {
		1041	my $login = $_[0];
		1042
		1043	my $guard = cf::lock_acquire "user_find:$login";
		1044
		1045	$cf::PLAYER{$_[0]} || do {
		1046	# rename old playerfiles to new ones
		1047	#TODO: remove when no longer required
		1048	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1049	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1050	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1051	aio_unlink +(playerdir $login) . "/$login.pl";
		1052
		1053	my $pl = load_pl path $login
		1054	or return;
		1055	$cf::PLAYER{$login} = $pl
		1056	}
		1057	}
		1058	}
		1059
		1060	sub save($) {
		1061	my ($pl) = @_;
		1062
		1063	return if $pl->{deny_save};
		1064
		1065	my $path = path $pl;
		1066	my $guard = cf::lock_acquire "user_save:$path";
		1067
		1068	return if $pl->{deny_save};
		1069
		1070	aio_mkdir playerdir $pl, 0770;
		1071	$pl->{last_save} = $cf::RUNTIME;
		1072
		1073	$pl->save_pl ($path);
		1074	Coro::cede;
		1075	}
		1076
		1077	sub new($) {
		1078	my ($login) = @_;
		1079
		1080	my $self = create;
		1081
		1082	$self->ob->name ($login);
		1083	$self->{deny_save} = 1;
		1084
		1085	$cf::PLAYER{$login} = $self;
		1086
		1087	$self
		1088	}
		1089
		1090	=item $pl->quit_character
		1091
		1092	Nukes the player without looking back. If logged in, the connection will
		1093	be destroyed. May block for a long time.
		1094
		1095	=cut
		1096
		1097	sub quit_character {
		1098	my ($pl) = @_;
		1099
		1100	my $name = $pl->ob->name;
		1101
		1102	$pl->{deny_save} = 1;
		1103	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1104
		1105	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1106	$pl->deactivate;
		1107	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1108	$pl->ns->destroy if $pl->ns;
		1109
		1110	my $path = playerdir $pl;
		1111	my $temp = "$path~$cf::RUNTIME~deleting~";
		1112	aio_rename $path, $temp;
		1113	delete $cf::PLAYER{$pl->ob->name};
		1114	$pl->destroy;
		1115
		1116	my $prefix = qr<^~\Q$name\E/>;
		1117
		1118	# nuke player maps
		1119	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1120
		1121	IO::AIO::aio_rmtree $temp;
		1122	}
		1123
		1124	=item $pl->kick
		1125
		1126	Kicks a player out of the game. This destroys the connection.
		1127
		1128	=cut
		1129
		1130	sub kick {
		1131	my ($pl, $kicker) = @_;
		1132
		1133	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1134	$pl->killer ("kicked");
		1135	$pl->ns->destroy;
		1136	}
		1137
		1138	=item cf::player::list_logins
		1139
		1140	Returns am arrayref of all valid playernames in the system, can take a
		1141	while and may block, so not sync_job-capable, ever.
		1142
		1143	=cut
		1144
		1145	sub list_logins {
		1146	my $dirs = aio_readdir $PLAYERDIR
		1147	or return [];
		1148
		1149	my @logins;
		1150
		1151	for my $login (@$dirs) {
		1152	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1153	aio_read $fh, 0, 512, my $buf, 0 or next;
		1154	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1155
		1156	utf8::decode $login;
		1157	push @logins, $login;
		1158	}
		1159
		1160	\@logins
		1161	}
		1162
		1163	=item $player->maps
		1164
		1165	Returns an arrayref of map paths that are private for this
		1166	player. May block.
		1167
		1168	=cut
		1169
		1170	sub maps($) {
		1171	my ($pl) = @_;
		1172
		1173	$pl = ref $pl ? $pl->ob->name : $pl;
		1174
		1175	my $files = aio_readdir playerdir $pl
		1176	or return;
		1177
		1178	my @paths;
		1179
		1180	for (@$files) {
		1181	utf8::decode $_;
		1182	next if /\.(?:pl|pst)$/;
		1183	next unless /^$PATH_SEP/o;
		1184
		1185	push @paths, cf::map::normalise "~$pl/$_";
		1186	}
		1187
		1188	\@paths
		1189	}
		1190
		1191	=item $player->ext_reply ($msgid, %msg)
		1192
		1193	Sends an ext reply to the player.
		1194
		1195	=cut
		1196
		1197	sub ext_reply($$%) {
		1198	my ($self, $id, %msg) = @_;
		1199
		1200	$msg{msgid} = $id;
		1201
		1202	$self->send ("ext " . cf::to_json \%msg);
		1203	}
		1204
		1205	=item $player->ext_event ($type, %msg)
		1206
		1207	Sends an ext event to the client.
		1208
		1209	=cut
		1210
		1211	sub ext_event($$%) {
		1212	my ($self, $type, %msg) = @_;
		1213
		1214	$self->ns->ext_event ($type, %msg);
		1215	}
		1216
		1217	=head3 cf::region
		1218
		1219	=over 4
		1220
		1221	=cut
		1222
		1223	package cf::region;
		1224
		1225	=item cf::region::find_by_path $path
		1226
		1227	Tries to decuce the probable region for a map knowing only its path.
		1228
		1229	=cut
		1230
		1231	sub find_by_path($) {
		1232	my ($path) = @_;
		1233
		1234	my ($match, $specificity);
		1235
		1236	for my $region (list) {
		1237	if ($region->match && $path =~ $region->match) {
		1238	($match, $specificity) = ($region, $region->specificity)
		1239	if $region->specificity > $specificity;
		1240	}
		1241	}
		1242
		1243	$match
		1244	}
		1245
		1246	=back
		1247
		1248	=head3 cf::map
		1249
		1250	=over 4
		1251
		1252	=cut
		1253
		1254	package cf::map;
		1255
		1256	use Fcntl;
		1257	use Coro::AIO;
		1258
		1259	use overload
		1260	'""' => \&as_string,
		1261	fallback => 1;
		1262
		1263	our $MAX_RESET = 3600;
		1264	our $DEFAULT_RESET = 3000;
		1265
		1266	sub generate_random_map {
		1267	my ($self, $rmp) = @_;
		1268	# mit "rum" bekleckern, nicht
		1269	$self->_create_random_map (
		1270	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1271	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1272	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1273	$rmp->{exit_on_final_map},
		1274	$rmp->{xsize}, $rmp->{ysize},
		1275	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1276	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1277	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1278	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1279	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1280	(cf::region::find $rmp->{region}), $rmp->{custom}
		1281	)
		1282	}
		1283
		1284	=item cf::map->register ($regex, $prio)
		1285
		1286	Register a handler for the map path matching the given regex at the
		1287	givne priority (higher is better, built-in handlers have priority 0, the
		1288	default).
		1289
		1290	=cut
		1291
		1292	sub register {
		1293	my (undef, $regex, $prio) = @_;
		1294	my $pkg = caller;
		1295
		1296	no strict;
		1297	push @{"$pkg\::ISA"}, __PACKAGE__;
		1298
		1299	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1300	}
		1301
		1302	# also paths starting with '/'
		1303	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1304
		1305	sub thawer_merge {
		1306	my ($self, $merge) = @_;
		1307
		1308	# we have to keep some variables in memory intact
		1309	local $self->{path};
		1310	local $self->{load_path};
		1311	local $self->{deny_save};
		1312	local $self->{deny_reset};
		1313
		1314	$self->SUPER::thawer_merge ($merge);
		1315	}
		1316
		1317	sub normalise {
		1318	my ($path, $base) = @_;
		1319
		1320	$path = "$path"; # make sure its a string
		1321
		1322	$path =~ s/\.map$//;
		1323
		1324	# map plan:
		1325	#
		1326	# /! non-realised random map exit (special hack!)
		1327	# {... are special paths that are not being touched
		1328	# ?xxx/... are special absolute paths
		1329	# ?random/... random maps
		1330	# /... normal maps
		1331	# ~user/... per-player map of a specific user
		1332
		1333	$path =~ s/$PATH_SEP/\//go;
		1334
		1335	# treat it as relative path if it starts with
		1336	# something that looks reasonable
		1337	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1338	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1339
		1340	$base =~ s{[^/]+/?$}{};
		1341	$path = "$base/$path";
		1342	}
		1343
		1344	for ($path) {
		1345	redo if s{//}{/};
		1346	redo if s{/\.?/}{/};
		1347	redo if s{/[^/]+/\.\./}{/};
		1348	}
		1349
		1350	$path
		1351	}
		1352
		1353	sub new_from_path {
		1354	my (undef, $path, $base) = @_;
		1355
		1356	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1357
		1358	$path = normalise $path, $base;
		1359
		1360	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1361	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1362	my $self = bless cf::map::new, $pkg;
		1363	$self->{path} = $path; $self->path ($path);
		1364	$self->init; # pass $1 etc.
		1365	return $self;
		1366	}
		1367	}
		1368
		1369	Carp::carp "unable to resolve path '$path' (base '$base').";
		1370	()
		1371	}
		1372
		1373	sub init {
		1374	my ($self) = @_;
		1375
		1376	$self
		1377	}
		1378
		1379	sub as_string {
		1380	my ($self) = @_;
		1381
		1382	"$self->{path}"
		1383	}
		1384
		1385	# the displayed name, this is a one way mapping
		1386	sub visible_name {
		1387	&as_string
		1388	}
		1389
		1390	# the original (read-only) location
		1391	sub load_path {
		1392	my ($self) = @_;
		1393
		1394	"$MAPDIR/$self->{path}.map"
		1395	}
		1396
		1397	# the temporary/swap location
		1398	sub save_path {
		1399	my ($self) = @_;
		1400
		1401	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1402	"$TMPDIR/$path.map"
		1403	}
		1404
		1405	# the unique path, undef == no special unique path
		1406	sub uniq_path {
		1407	my ($self) = @_;
		1408
		1409	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1410	"$UNIQUEDIR/$path"
		1411	}
		1412
		1413	# and all this just because we cannot iterate over
		1414	# all maps in C++...
		1415	sub change_all_map_light {
		1416	my ($change) = @_;
		1417
		1418	$_->change_map_light ($change)
		1419	for grep $_->outdoor, values %cf::MAP;
		1420	}
		1421
		1422	sub unlink_save {
		1423	my ($self) = @_;
		1424
		1425	utf8::encode (my $save = $self->save_path);
		1426	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1427	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1428	}
		1429
		1430	sub load_header_from($) {
		1431	my ($self, $path) = @_;
		1432
		1433	utf8::encode $path;
		1434	#aio_open $path, O_RDONLY, 0
		1435	# or return;
		1436
		1437	$self->_load_header ($path)
		1438	or return;
		1439
		1440	$self->{load_path} = $path;
		1441
		1442	1
		1443	}
		1444
		1445	sub load_header_orig {
		1446	my ($self) = @_;
		1447
		1448	$self->load_header_from ($self->load_path)
		1449	}
		1450
		1451	sub load_header_temp {
		1452	my ($self) = @_;
		1453
		1454	$self->load_header_from ($self->save_path)
		1455	}
		1456
		1457	sub prepare_temp {
		1458	my ($self) = @_;
		1459
		1460	$self->last_access ((delete $self->{last_access})
		1461	|| $cf::RUNTIME); #d#
		1462	# safety
		1463	$self->{instantiate_time} = $cf::RUNTIME
		1464	if $self->{instantiate_time} > $cf::RUNTIME;
		1465	}
		1466
		1467	sub prepare_orig {
		1468	my ($self) = @_;
		1469
		1470	$self->{load_original} = 1;
		1471	$self->{instantiate_time} = $cf::RUNTIME;
		1472	$self->last_access ($cf::RUNTIME);
		1473	$self->instantiate;
		1474	}
		1475
		1476	sub load_header {
		1477	my ($self) = @_;
		1478
		1479	if ($self->load_header_temp) {
		1480	$self->prepare_temp;
		1481	} else {
		1482	$self->load_header_orig
		1483	or return;
		1484	$self->prepare_orig;
		1485	}
		1486
		1487	$self->default_region (cf::region::find_by_path $self->{path})
		1488	unless $self->default_region;
		1489
		1490	1
		1491	}
		1492
		1493	sub find;
		1494	sub find {
		1495	my ($path, $origin) = @_;
		1496
		1497	$path = normalise $path, $origin && $origin->path;
		1498
		1499	cf::lock_wait "map_find:$path";
		1500
		1501	$cf::MAP{$path} || do {
		1502	my $guard = cf::lock_acquire "map_find:$path";
		1503	my $map = new_from_path cf::map $path
		1504	or return;
		1505
		1506	$map->{last_save} = $cf::RUNTIME;
		1507
		1508	$map->load_header
		1509	or return;
		1510
		1511	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1512	# doing this can freeze the server in a sync job, obviously
		1513	#$cf::WAIT_FOR_TICK->wait;
		1514	$map->reset;
		1515	undef $guard;
		1516	return find $path;
		1517	}
		1518
		1519	$cf::MAP{$path} = $map
		1520	}
		1521	}
		1522
		1523	sub pre_load { }
		1524	sub post_load { }
		1525
		1526	sub load {
		1527	my ($self) = @_;
		1528
		1529	local $self->{deny_reset} = 1; # loading can take a long time
		1530
		1531	my $path = $self->{path};
		1532
		1533	{
		1534	my $guard = cf::lock_acquire "map_load:$path";
		1535
		1536	return if $self->in_memory != cf::MAP_SWAPPED;
		1537
		1538	$self->in_memory (cf::MAP_LOADING);
		1539
		1540	$self->alloc;
		1541
		1542	$self->pre_load;
		1543	Coro::cede;
		1544
		1545	$self->_load_objects ($self->{load_path}, 1)
		1546	or return;
		1547
		1548	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1549	if delete $self->{load_original};
		1550
		1551	if (my $uniq = $self->uniq_path) {
		1552	utf8::encode $uniq;
		1553	if (aio_open $uniq, O_RDONLY, 0) {
		1554	$self->clear_unique_items;
		1555	$self->_load_objects ($uniq, 0);
		1556	}
		1557	}
		1558
		1559	Coro::cede;
		1560	# now do the right thing for maps
		1561	$self->link_multipart_objects;
		1562	$self->difficulty ($self->estimate_difficulty)
		1563	unless $self->difficulty;
		1564	Coro::cede;
		1565
		1566	unless ($self->{deny_activate}) {
		1567	$self->decay_objects;
		1568	$self->fix_auto_apply;
		1569	$self->update_buttons;
		1570	Coro::cede;
		1571	$self->set_darkness_map;
		1572	Coro::cede;
		1573	$self->activate;
		1574	}
		1575
		1576	$self->in_memory (cf::MAP_IN_MEMORY);
		1577	}
		1578
		1579	$self->post_load;
		1580	}
		1581
		1582	sub customise_for {
		1583	my ($self, $ob) = @_;
		1584
		1585	return find "~" . $ob->name . "/" . $self->{path}
		1586	if $self->per_player;
		1587
		1588	$self
		1589	}
		1590
		1591	# find and load all maps in the 3x3 area around a map
		1592	sub load_diag {
733	my ($map) = @_;	1593	my ($map) = @_;
734		1594
735	my $path = $map->tmpname;	1595	my @diag; # diagonal neighbours
736	defined $path or return;
737		1596
738	unlink "$path.pst";	1597	for (0 .. 3) {
739	};	1598	my $neigh = $map->tile_path ($_)
		1599	or next;
		1600	$neigh = find $neigh, $map
		1601	or next;
		1602	$neigh->load;
740		1603
741	attach_to_maps prio => -10000, package => cf::mapsupport::;	1604	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1605	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1606	}
742		1607
743	#############################################################################	1608	for (@diag) {
744	# load/save perl data associated with player->ob objects	1609	my $neigh = find @$_
745		1610	or next;
746	sub all_objects(@) {	1611	$neigh->load;
747	@_, map all_objects ($_->inv), @_	1612	}
748	}	1613	}
749		1614
750	# TODO: compatibility cruft, remove when no longer needed	1615	sub find_sync {
751	attach_to_players	1616	my ($path, $origin) = @_;
752	on_load => sub {
753	my ($pl, $path) = @_;
754		1617
755	for my $o (all_objects $pl->ob) {	1618	cf::sync_job { find $path, $origin }
756	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1619	}
757	$o->set_ob_key_value ("_perl_data");
758		1620
759	%$o = %{ Storable::thaw pack "H*", $value };	1621	sub do_load_sync {
		1622	my ($map) = @_;
		1623
		1624	cf::sync_job { $map->load };
		1625	}
		1626
		1627	our %MAP_PREFETCH;
		1628	our $MAP_PREFETCHER = undef;
		1629
		1630	sub find_async {
		1631	my ($path, $origin) = @_;
		1632
		1633	$path = normalise $path, $origin && $origin->{path};
		1634
		1635	if (my $map = $cf::MAP{$path}) {
		1636	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1637	}
		1638
		1639	undef $MAP_PREFETCH{$path};
		1640	$MAP_PREFETCHER ||= cf::async {
		1641	while (%MAP_PREFETCH) {
		1642	for my $path (keys %MAP_PREFETCH) {
		1643	my $map = find $path
		1644	or next;
		1645	$map->load;
		1646
		1647	delete $MAP_PREFETCH{$path};
760	}	1648	}
761	}	1649	}
		1650	undef $MAP_PREFETCHER;
		1651	};
		1652	$MAP_PREFETCHER->prio (6);
		1653
		1654	()
		1655	}
		1656
		1657	sub save {
		1658	my ($self) = @_;
		1659
		1660	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1661
		1662	$self->{last_save} = $cf::RUNTIME;
		1663
		1664	return unless $self->dirty;
		1665
		1666	my $save = $self->save_path; utf8::encode $save;
		1667	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1668
		1669	$self->{load_path} = $save;
		1670
		1671	return if $self->{deny_save};
		1672
		1673	local $self->{last_access} = $self->last_access;#d#
		1674
		1675	cf::async {
		1676	$_->contr->save for $self->players;
		1677	};
		1678
		1679	if ($uniq) {
		1680	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1681	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1682	} else {
		1683	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
762	},	1684	}
763	;	1685	}
764		1686
765	#############################################################################	1687	sub swap_out {
		1688	my ($self) = @_;
766		1689
767	=head2 CORE EXTENSIONS	1690	# save first because save cedes
		1691	$self->save;
768		1692
769	Functions and methods that extend core crossfire objects.	1693	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1694
		1695	return if $self->players;
		1696	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1697	return if $self->{deny_save};
		1698
		1699	$self->clear;
		1700	$self->in_memory (cf::MAP_SWAPPED);
		1701	}
		1702
		1703	sub reset_at {
		1704	my ($self) = @_;
		1705
		1706	# TODO: safety, remove and allow resettable per-player maps
		1707	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1708	return 1e99 if $self->{deny_reset};
		1709
		1710	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1711	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1712
		1713	$time + $to
		1714	}
		1715
		1716	sub should_reset {
		1717	my ($self) = @_;
		1718
		1719	$self->reset_at <= $cf::RUNTIME
		1720	}
		1721
		1722	sub reset {
		1723	my ($self) = @_;
		1724
		1725	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1726
		1727	return if $self->players;
		1728	return if $self->isa ("ext::map_per_player");#d#
		1729
		1730	warn "resetting map ", $self->path;#d#
		1731
		1732	$self->in_memory (cf::MAP_SWAPPED);
		1733
		1734	# need to save uniques path
		1735	unless ($self->{deny_save}) {
		1736	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1737
		1738	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1739	if $uniq;
		1740	}
		1741
		1742	delete $cf::MAP{$self->path};
		1743
		1744	$self->clear;
		1745
		1746	$_->clear_links_to ($self) for values %cf::MAP;
		1747
		1748	$self->unlink_save;
		1749	$self->destroy;
		1750	}
		1751
		1752	my $nuke_counter = "aaaa";
		1753
		1754	sub nuke {
		1755	my ($self) = @_;
		1756
		1757	delete $cf::MAP{$self->path};
		1758
		1759	$self->unlink_save;
		1760
		1761	bless $self, "cf::map";
		1762	delete $self->{deny_reset};
		1763	$self->{deny_save} = 1;
		1764	$self->reset_timeout (1);
		1765	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1766
		1767	$cf::MAP{$self->path} = $self;
		1768
		1769	$self->reset; # polite request, might not happen
		1770	}
		1771
		1772	=item cf::map::unique_maps
		1773
		1774	Returns an arrayref of paths of all shared maps that have
		1775	instantiated unique items. May block.
		1776
		1777	=cut
		1778
		1779	sub unique_maps() {
		1780	my $files = aio_readdir $UNIQUEDIR
		1781	or return;
		1782
		1783	my @paths;
		1784
		1785	for (@$files) {
		1786	utf8::decode $_;
		1787	next if /\.pst$/;
		1788	next unless /^$PATH_SEP/o;
		1789
		1790	push @paths, cf::map::normalise $_;
		1791	}
		1792
		1793	\@paths
		1794	}
		1795
		1796	package cf;
		1797
		1798	=back
		1799
		1800	=head3 cf::object
		1801
		1802	=cut
		1803
		1804	package cf::object;
770		1805
771	=over 4	1806	=over 4
772		1807
773	=item cf::player::exists $login	1808	=item $ob->inv_recursive
774		1809
775	Returns true when the given account exists.	1810	Returns the inventory of the object _and_ their inventories, recursively.
776		1811
777	=cut	1812	=cut
778		1813
779	sub cf::player::exists($) {	1814	sub inv_recursive_;
780	cf::player::find $_[0]	1815	sub inv_recursive_ {
781	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1816	map { $_, inv_recursive_ $_->inv } @_
782	}	1817	}
		1818
		1819	sub inv_recursive {
		1820	inv_recursive_ inv $_[0]
		1821	}
		1822
		1823	package cf;
		1824
		1825	=back
		1826
		1827	=head3 cf::object::player
		1828
		1829	=over 4
783		1830
784	=item $player_object->reply ($npc, $msg[, $flags])	1831	=item $player_object->reply ($npc, $msg[, $flags])
785		1832
786	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1833	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
787	can be C<undef>. Does the right thing when the player is currently in a	1834	can be C<undef>. Does the right thing when the player is currently in a
…		…
789		1836
790	=cut	1837	=cut
791		1838
792	# rough implementation of a future "reply" method that works	1839	# rough implementation of a future "reply" method that works
793	# with dialog boxes.	1840	# with dialog boxes.
		1841	#TODO: the first argument must go, split into a $npc->reply_to ( method
794	sub cf::object::player::reply($$$;$) {	1842	sub cf::object::player::reply($$$;$) {
795	my ($self, $npc, $msg, $flags) = @_;	1843	my ($self, $npc, $msg, $flags) = @_;
796		1844
797	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1845	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
798		1846
…		…
802	$msg = $npc->name . " says: $msg" if $npc;	1850	$msg = $npc->name . " says: $msg" if $npc;
803	$self->message ($msg, $flags);	1851	$self->message ($msg, $flags);
804	}	1852	}
805	}	1853	}
806		1854
807	=item $player->ext_reply ($msgid, $msgtype, %msg)
808
809	Sends an ext reply to the player.
810
811	=cut
812
813	sub cf::player::ext_reply($$$%) {
814	my ($self, $id, %msg) = @_;
815
816	$msg{msgid} = $id;
817
818	$self->send ("ext " . to_json \%msg);
819	}
820
821	=item $player_object->may ("access")	1855	=item $player_object->may ("access")
822		1856
823	Returns wether the given player is authorized to access resource "access"	1857	Returns wether the given player is authorized to access resource "access"
824	(e.g. "command_wizcast").	1858	(e.g. "command_wizcast").
825		1859
…		…
832	(ref $cf::CFG{"may_$access"}	1866	(ref $cf::CFG{"may_$access"}
833	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
834	: $cf::CFG{"may_$access"})	1868	: $cf::CFG{"may_$access"})
835	}	1869	}
836		1870
837	=cut	1871	=item $player_object->enter_link
838		1872
839	#############################################################################	1873	Freezes the player and moves him/her to a special map (C<{link}>).
		1874
		1875	The player should be reasonably safe there for short amounts of time. You
		1876	I<MUST> call C<leave_link> as soon as possible, though.
		1877
		1878	Will never block.
		1879
		1880	=item $player_object->leave_link ($map, $x, $y)
		1881
		1882	Moves the player out of the special C<{link}> map onto the specified
		1883	map. If the map is not valid (or omitted), the player will be moved back
		1884	to the location he/she was before the call to C<enter_link>, or, if that
		1885	fails, to the emergency map position.
		1886
		1887	Might block.
		1888
		1889	=cut
		1890
		1891	sub link_map {
		1892	unless ($LINK_MAP) {
		1893	$LINK_MAP = cf::map::find "{link}"
		1894	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1895	$LINK_MAP->load;
		1896	}
		1897
		1898	$LINK_MAP
		1899	}
		1900
		1901	sub cf::object::player::enter_link {
		1902	my ($self) = @_;
		1903
		1904	$self->deactivate_recursive;
		1905
		1906	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1907
		1908	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1909	if $self->map;
		1910
		1911	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1912	}
		1913
		1914	sub cf::object::player::leave_link {
		1915	my ($self, $map, $x, $y) = @_;
		1916
		1917	my $link_pos = delete $self->{_link_pos};
		1918
		1919	unless ($map) {
		1920	# restore original map position
		1921	($map, $x, $y) = @{ $link_pos || [] };
		1922	$map = cf::map::find $map;
		1923
		1924	unless ($map) {
		1925	($map, $x, $y) = @$EMERGENCY_POSITION;
		1926	$map = cf::map::find $map
		1927	or die "FATAL: cannot load emergency map\n";
		1928	}
		1929	}
		1930
		1931	($x, $y) = (-1, -1)
		1932	unless (defined $x) && (defined $y);
		1933
		1934	# use -1 or undef as default coordinates, not 0, 0
		1935	($x, $y) = ($map->enter_x, $map->enter_y)
		1936	if $x <=0 && $y <= 0;
		1937
		1938	$map->load;
		1939	$map->load_diag;
		1940
		1941	return unless $self->contr->active;
		1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1945	$self->enter_map ($map, $x, $y);
		1946	}
		1947
		1948	cf::player->attach (
		1949	on_logout => sub {
		1950	my ($pl) = @_;
		1951
		1952	# abort map switching before logout
		1953	if ($pl->ob->{_link_pos}) {
		1954	cf::sync_job {
		1955	$pl->ob->leave_link
		1956	};
		1957	}
		1958	},
		1959	on_login => sub {
		1960	my ($pl) = @_;
		1961
		1962	# try to abort aborted map switching on player login :)
		1963	# should happen only on crashes
		1964	if ($pl->ob->{_link_pos}) {
		1965	$pl->ob->enter_link;
		1966	(async {
		1967	$pl->ob->reply (undef,
		1968	"There was an internal problem at your last logout, "
		1969	. "the server will try to bring you to your intended destination in a second.",
		1970	cf::NDI_RED);
		1971	# we need this sleep as the login has a concurrent enter_exit running
		1972	# and this sleep increases chances of the player not ending up in scorn
		1973	Coro::Timer::sleep 1;
		1974	$pl->ob->leave_link;
		1975	})->prio (2);
		1976	}
		1977	},
		1978	);
		1979
		1980	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1981
		1982	Moves the player to the given map-path and coordinates by first freezing
		1983	her, loading and preparing them map, calling the provided $check callback
		1984	that has to return the map if sucecssful, and then unfreezes the player on
		1985	the new (success) or old (failed) map position.
		1986
		1987	=cut
		1988
		1989	sub cf::object::player::goto {
		1990	my ($self, $path, $x, $y, $check) = @_;
		1991
		1992	$self->enter_link;
		1993
		1994	(async {
		1995	my $map = eval {
		1996	my $map = cf::map::find $path;
		1997
		1998	if ($map) {
		1999	$map = $map->customise_for ($self);
		2000	$map = $check->($map) if $check && $map;
		2001	} else {
		2002	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2003	}
		2004
		2005	$map
		2006	};
		2007
		2008	if ($@) {
		2009	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2010	LOG llevError | logBacktrace, Carp::longmess $@;
		2011	}
		2012
		2013	$self->leave_link ($map, $x, $y);
		2014	})->prio (1);
		2015	}
		2016
		2017	=item $player_object->enter_exit ($exit_object)
		2018
		2019	=cut
		2020
		2021	sub parse_random_map_params {
		2022	my ($spec) = @_;
		2023
		2024	my $rmp = { # defaults
		2025	xsize => (cf::rndm 15, 40),
		2026	ysize => (cf::rndm 15, 40),
		2027	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2028	#layout => string,
		2029	};
		2030
		2031	for (split /\n/, $spec) {
		2032	my ($k, $v) = split /\s+/, $_, 2;
		2033
		2034	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2035	}
		2036
		2037	$rmp
		2038	}
		2039
		2040	sub prepare_random_map {
		2041	my ($exit) = @_;
		2042
		2043	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2044
		2045	# all this does is basically replace the /! path by
		2046	# a new random map path (?random/...) with a seed
		2047	# that depends on the exit object
		2048
		2049	my $rmp = parse_random_map_params $exit->msg;
		2050
		2051	if ($exit->map) {
		2052	$rmp->{region} = $exit->region->name;
		2053	$rmp->{origin_map} = $exit->map->path;
		2054	$rmp->{origin_x} = $exit->x;
		2055	$rmp->{origin_y} = $exit->y;
		2056	}
		2057
		2058	$rmp->{random_seed} ||= $exit->random_seed;
		2059
		2060	my $data = cf::to_json $rmp;
		2061	my $md5 = Digest::MD5::md5_hex $data;
		2062	my $meta = "$RANDOMDIR/$md5.meta";
		2063
		2064	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2065	aio_write $fh, 0, (length $data), $data, 0;
		2066	undef $fh;
		2067	aio_rename "$meta~", $meta;
		2068
		2069	$exit->slaying ("?random/$md5");
		2070	$exit->msg (undef);
		2071	}
		2072	}
		2073
		2074	sub cf::object::player::enter_exit {
		2075	my ($self, $exit) = @_;
		2076
		2077	return unless $self->type == cf::PLAYER;
		2078
		2079	if ($exit->slaying eq "/!") {
		2080	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2081	# the problem is that $exit might not survive long enough
		2082	# so it needs to be done right now, right here
		2083	cf::sync_job { prepare_random_map $exit };
		2084	}
		2085
		2086	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2087	my $hp = $exit->stats->hp;
		2088	my $sp = $exit->stats->sp;
		2089
		2090	$self->enter_link;
		2091
		2092	(async {
		2093	$self->deactivate_recursive; # just to be sure
		2094	unless (eval {
		2095	$self->goto ($slaying, $hp, $sp);
		2096
		2097	1;
		2098	}) {
		2099	$self->message ("Something went wrong deep within the crossfire server. "
		2100	. "I'll try to bring you back to the map you were before. "
		2101	. "Please report this to the dungeon master!",
		2102	cf::NDI_UNIQUE | cf::NDI_RED);
		2103
		2104	warn "ERROR in enter_exit: $@";
		2105	$self->leave_link;
		2106	}
		2107	})->prio (1);
		2108	}
		2109
		2110	=head3 cf::client
		2111
		2112	=over 4
		2113
		2114	=item $client->send_drawinfo ($text, $flags)
		2115
		2116	Sends a drawinfo packet to the client. Circumvents output buffering so
		2117	should not be used under normal circumstances.
		2118
		2119	=cut
		2120
		2121	sub cf::client::send_drawinfo {
		2122	my ($self, $text, $flags) = @_;
		2123
		2124	utf8::encode $text;
		2125	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2126	}
		2127
		2128	=item $client->ext_event ($type, %msg)
		2129
		2130	Sends an exti event to the client.
		2131
		2132	=cut
		2133
		2134	sub cf::client::ext_event($$%) {
		2135	my ($self, $type, %msg) = @_;
		2136
		2137	$msg{msgtype} = "event_$type";
		2138	$self->send_packet ("ext " . cf::to_json \%msg);
		2139	}
		2140
		2141	=item $success = $client->query ($flags, "text", \&cb)
		2142
		2143	Queues a query to the client, calling the given callback with
		2144	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2145	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2146
		2147	Queries can fail, so check the return code. Or don't, as queries will become
		2148	reliable at some point in the future.
		2149
		2150	=cut
		2151
		2152	sub cf::client::query {
		2153	my ($self, $flags, $text, $cb) = @_;
		2154
		2155	return unless $self->state == ST_PLAYING
		2156	|| $self->state == ST_SETUP
		2157	|| $self->state == ST_CUSTOM;
		2158
		2159	$self->state (ST_CUSTOM);
		2160
		2161	utf8::encode $text;
		2162	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2163
		2164	$self->send_packet ($self->{query_queue}[0][0])
		2165	if @{ $self->{query_queue} } == 1;
		2166	}
		2167
		2168	cf::client->attach (
		2169	on_reply => sub {
		2170	my ($ns, $msg) = @_;
		2171
		2172	# this weird shuffling is so that direct followup queries
		2173	# get handled first
		2174	my $queue = delete $ns->{query_queue}
		2175	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2176
		2177	(shift @$queue)->[1]->($msg);
		2178	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2179
		2180	push @{ $ns->{query_queue} }, @$queue;
		2181
		2182	if (@{ $ns->{query_queue} } == @$queue) {
		2183	if (@$queue) {
		2184	$ns->send_packet ($ns->{query_queue}[0][0]);
		2185	} else {
		2186	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2187	}
		2188	}
		2189	},
		2190	);
		2191
		2192	=item $client->async (\&cb)
		2193
		2194	Create a new coroutine, running the specified callback. The coroutine will
		2195	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2196	or loss of connection).
		2197
		2198	=cut
		2199
		2200	sub cf::client::async {
		2201	my ($self, $cb) = @_;
		2202
		2203	my $coro = &Coro::async ($cb);
		2204
		2205	$coro->on_destroy (sub {
		2206	delete $self->{_coro}{$coro+0};
		2207	});
		2208
		2209	$self->{_coro}{$coro+0} = $coro;
		2210
		2211	$coro
		2212	}
		2213
		2214	cf::client->attach (
		2215	on_destroy => sub {
		2216	my ($ns) = @_;
		2217
		2218	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2219	},
		2220	);
		2221
		2222	=back
		2223
840		2224
841	=head2 SAFE SCRIPTING	2225	=head2 SAFE SCRIPTING
842		2226
843	Functions that provide a safe environment to compile and execute	2227	Functions that provide a safe environment to compile and execute
844	snippets of perl code without them endangering the safety of the server	2228	snippets of perl code without them endangering the safety of the server
…		…
857		2241
858	# here we export the classes and methods available to script code	2242	# here we export the classes and methods available to script code
859		2243
860	=pod	2244	=pod
861		2245
862	The following fucntions and emthods are available within a safe environment:	2246	The following functions and methods are available within a safe environment:
863		2247
864	cf::object contr pay_amount pay_player	2248	cf::object contr pay_amount pay_player map
865	cf::object::player player	2249	cf::object::player player
866	cf::player peaceful	2250	cf::player peaceful
		2251	cf::map trigger
867		2252
868	=cut	2253	=cut
869		2254
870	for (	2255	for (
871	["cf::object" => qw(contr pay_amount pay_player)],	2256	["cf::object" => qw(contr pay_amount pay_player map)],
872	["cf::object::player" => qw(player)],	2257	["cf::object::player" => qw(player)],
873	["cf::player" => qw(peaceful)],	2258	["cf::player" => qw(peaceful)],
		2259	["cf::map" => qw(trigger)],
874	) {	2260	) {
875	no strict 'refs';	2261	no strict 'refs';
876	my ($pkg, @funs) = @$_;	2262	my ($pkg, @funs) = @$_;
877	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2263	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
878	for @funs;	2264	for @funs;
…		…
950	#############################################################################	2336	#############################################################################
951		2337
952	=head2 EXTENSION DATABASE SUPPORT	2338	=head2 EXTENSION DATABASE SUPPORT
953		2339
954	Crossfire maintains a very simple database for extension use. It can	2340	Crossfire maintains a very simple database for extension use. It can
955	currently store anything that can be serialised using Storable, which	2341	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
956	excludes objects.	2342	convert to/from binary).
957		2343
958	The parameter C<$family> should best start with the name of the extension	2344	The parameter C<$family> should best start with the name of the extension
959	using it, it should be unique.	2345	using it, it should be unique.
960		2346
961	=over 4	2347	=over 4
962		2348
963	=item $hashref = cf::db_get $family
964
965	Return a hashref for use by the extension C<$family>, which can be
966	modified. After modifications, you have to call C<cf::db_dirty> or
967	C<cf::db_sync>.
968
969	=item $value = cf::db_get $family => $key	2349	=item $value = cf::db_get $family => $key
970		2350
971	Returns a single value from the database	2351	Returns a single value from the database.
972
973	=item cf::db_put $family => $hashref
974
975	Stores the given family hashref into the database. Updates are delayed, if
976	you want the data to be synced to disk immediately, use C<cf::db_sync>.
977		2352
978	=item cf::db_put $family => $key => $value	2353	=item cf::db_put $family => $key => $value
979		2354
980	Stores the given C<$value> in the family hash. Updates are delayed, if you	2355	Stores the given C<$value> in the family.
981	want the data to be synced to disk immediately, use C<cf::db_sync>.
982
983	=item cf::db_dirty
984
985	Marks the database as dirty, to be updated at a later time.
986
987	=item cf::db_sync
988
989	Immediately write the database to disk I<if it is dirty>.
990		2356
991	=cut	2357	=cut
992		2358
993	our $DB;	2359	our $DB;
994		2360
995	{	2361	sub db_init {
996	my $path = cf::localdir . "/database.pst";	2362	unless ($DB) {
		2363	$DB = BDB::db_create $DB_ENV;
997		2364
998	sub db_load() {	2365	cf::sync_job {
999	warn "loading database $path\n";#d# remove later	2366	eval {
1000	$DB = stat $path ? Storable::retrieve $path : { };	2367	$DB->set_flags (BDB::CHKSUM);
1001	}
1002		2368
1003	my $pid;	2369	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1004		2370	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1005	sub db_save() {	2371	cf::cleanup "db_open(db): $!" if $!;
1006	warn "saving database $path\n";#d# remove later	2372	};
1007	waitpid $pid, 0 if $pid;	2373	cf::cleanup "db_open(db): $@" if $@;
1008	if (0 == ($pid = fork)) {
1009	$DB->{_meta}{version} = 1;
1010	Storable::nstore $DB, "$path~";
1011	rename "$path~", $path;
1012	cf::_exit 0 if defined $pid;
1013	}	2374	};
1014	}
1015
1016	my $dirty;
1017
1018	sub db_sync() {
1019	db_save if $dirty;
1020	undef $dirty;
1021	}
1022
1023	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
1024	db_sync;
1025	});	2375	}
		2376	}
1026		2377
1027	sub db_dirty() {
1028	$dirty = 1;
1029	$idle->start;
1030	}
1031
1032	sub db_get($;$) {	2378	sub db_get($$) {
1033	@_ >= 2	2379	my $key = "$_[0]/$_[1]";
1034	? $DB->{$_[0]}{$_[1]}
1035	: ($DB->{$_[0]} ||= { })
1036	}
1037		2380
		2381	cf::sync_job {
		2382	BDB::db_get $DB, undef, $key, my $data;
		2383
		2384	$! ? ()
		2385	: $data
		2386	}
		2387	}
		2388
1038	sub db_put($$;$) {	2389	sub db_put($$$) {
1039	if (@_ >= 3) {	2390	BDB::dbreq_pri 4;
1040	$DB->{$_[0]}{$_[1]} = $_[2];	2391	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1041	} else {	2392	}
1042	$DB->{$_[0]} = $_[1];
1043	}
1044	db_dirty;
1045	}
1046		2393
1047	attach_global	2394	=item cf::cache $id => [$paths...], $processversion => $process
1048	prio => 10000,	2395
1049	on_cleanup => sub {	2396	Generic caching function that returns the value of the resource $id,
1050	db_sync;	2397	caching and regenerating as required.
		2398
		2399	This function can block.
		2400
		2401	=cut
		2402
		2403	sub cache {
		2404	my ($id, $src, $processversion, $process) = @_;
		2405
		2406	my $meta =
		2407	join "\x00",
		2408	$processversion,
		2409	map {
		2410	aio_stat $_
		2411	and Carp::croak "$_: $!";
		2412
		2413	($_, (stat _)[7,9])
		2414	} @$src;
		2415
		2416	my $dbmeta = db_get cache => "$id/meta";
		2417	if ($dbmeta ne $meta) {
		2418	# changed, we may need to process
		2419
		2420	my @data;
		2421	my $md5;
		2422
		2423	for (0 .. $#$src) {
		2424	0 <= aio_load $src->[$_], $data[$_]
		2425	or Carp::croak "$src->[$_]: $!";
1051	},	2426	}
		2427
		2428	# if processing is expensive, check
		2429	# checksum first
		2430	if (1) {
		2431	$md5 =
		2432	join "\x00",
		2433	$processversion,
		2434	map {
		2435	Coro::cede;
		2436	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2437	} 0.. $#$src;
		2438
		2439
		2440	my $dbmd5 = db_get cache => "$id/md5";
		2441	if ($dbmd5 eq $md5) {
		2442	db_put cache => "$id/meta", $meta;
		2443
		2444	return db_get cache => "$id/data";
		2445	}
		2446	}
		2447
		2448	my $t1 = Time::HiRes::time;
		2449	my $data = $process->(\@data);
		2450	my $t2 = Time::HiRes::time;
		2451
		2452	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2453
		2454	db_put cache => "$id/data", $data;
		2455	db_put cache => "$id/md5" , $md5;
		2456	db_put cache => "$id/meta", $meta;
		2457
		2458	return $data;
1052	;	2459	}
		2460
		2461	db_get cache => "$id/data"
1053	}	2462	}
		2463
		2464	=item fork_call { }, $args
		2465
		2466	Executes the given code block with the given arguments in a seperate
		2467	process, returning the results. Everything must be serialisable with
		2468	Coro::Storable. May, of course, block. Note that the executed sub may
		2469	never block itself or use any form of Event handling.
		2470
		2471	=cut
		2472
		2473	sub fork_call(&@) {
		2474	my ($cb, @args) = @_;
		2475
		2476	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2477	# or die "socketpair: $!";
		2478	pipe my $fh1, my $fh2
		2479	or die "pipe: $!";
		2480
		2481	if (my $pid = fork) {
		2482	close $fh2;
		2483
		2484	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2485	$res = Coro::Storable::thaw $res;
		2486
		2487	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2488
		2489	die $$res unless "ARRAY" eq ref $res;
		2490
		2491	return wantarray ? @$res : $res->[-1];
		2492	} else {
		2493	reset_signals;
		2494	local $SIG{__WARN__};
		2495	local $SIG{__DIE__};
		2496	eval {
		2497	close $fh1;
		2498
		2499	my @res = eval { $cb->(@args) };
		2500	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2501	};
		2502
		2503	warn $@ if $@;
		2504	_exit 0;
		2505	}
		2506	}
		2507
		2508
1054		2509
1055	#############################################################################	2510	#############################################################################
1056	# the server's main()	2511	# the server's init and main functions
		2512
		2513	sub load_facedata($) {
		2514	my ($path) = @_;
		2515
		2516	warn "loading facedata from $path\n";
		2517
		2518	my $facedata;
		2519	0 < aio_load $path, $facedata
		2520	or die "$path: $!";
		2521
		2522	$facedata = Coro::Storable::thaw $facedata;
		2523
		2524	$facedata->{version} == 2
		2525	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2526
		2527	{
		2528	my $faces = $facedata->{faceinfo};
		2529
		2530	while (my ($face, $info) = each %$faces) {
		2531	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2532	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2533	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2534	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2535	Coro::cede;
		2536	}
		2537
		2538	while (my ($face, $info) = each %$faces) {
		2539	next unless $info->{smooth};
		2540	my $idx = cf::face::find $face
		2541	or next;
		2542	if (my $smooth = cf::face::find $info->{smooth}) {
		2543	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2544	} else {
		2545	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2546	}
		2547	Coro::cede;
		2548	}
		2549	}
		2550
		2551	{
		2552	my $anims = $facedata->{animinfo};
		2553
		2554	while (my ($anim, $info) = each %$anims) {
		2555	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2556	Coro::cede;
		2557	}
		2558
		2559	cf::anim::invalidate_all; # d'oh
		2560	}
		2561
		2562	1
		2563	}
		2564
		2565	sub reload_regions {
		2566	load_resource_file "$MAPDIR/regions"
		2567	or die "unable to load regions file\n";
		2568	}
		2569
		2570	sub reload_facedata {
		2571	load_facedata "$DATADIR/facedata"
		2572	or die "unable to load facedata\n";
		2573	}
		2574
		2575	sub reload_archetypes {
		2576	load_resource_file "$DATADIR/archetypes"
		2577	or die "unable to load archetypes\n";
		2578	}
		2579
		2580	sub reload_treasures {
		2581	load_resource_file "$DATADIR/treasures"
		2582	or die "unable to load treasurelists\n";
		2583	}
		2584
		2585	sub reload_resources {
		2586	warn "reloading resource files...\n";
		2587
		2588	reload_regions;
		2589	reload_facedata;
		2590	reload_archetypes;
		2591	reload_treasures;
		2592
		2593	warn "finished reloading resource files\n";
		2594	}
		2595
		2596	sub init {
		2597	reload_resources;
		2598	}
1057		2599
1058	sub cfg_load {	2600	sub cfg_load {
1059	open my $fh, "<:utf8", cf::confdir . "/config"	2601	open my $fh, "<:utf8", "$CONFDIR/config"
1060	or return;	2602	or return;
1061		2603
1062	local $/;	2604	local $/;
1063	*CFG = YAML::Syck::Load <$fh>;	2605	*CFG = YAML::Syck::Load <$fh>;
		2606
		2607	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2608
		2609	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2610	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2611
		2612	if (exists $CFG{mlockall}) {
		2613	eval {
		2614	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2615	and die "WARNING: m(un)lockall failed: $!\n";
		2616	};
		2617	warn $@ if $@;
		2618	}
1064	}	2619	}
1065		2620
1066	sub main {	2621	sub main {
		2622	# we must not ever block the main coroutine
		2623	local $Coro::idle = sub {
		2624	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2625	(async {
		2626	Event::one_event;
		2627	})->prio (Coro::PRIO_MAX);
		2628	};
		2629
1067	cfg_load;	2630	cfg_load;
1068	db_load;	2631	db_init;
1069	load_extensions;	2632	load_extensions;
		2633
		2634	$TICK_WATCHER->start;
1070	Event::loop;	2635	Event::loop;
1071	}	2636	}
1072		2637
1073	#############################################################################	2638	#############################################################################
1074	# initialisation	2639	# initialisation and cleanup
1075		2640
1076	sub _perl_reload(&) {	2641	# install some emergency cleanup handlers
		2642	BEGIN {
		2643	for my $signal (qw(INT HUP TERM)) {
		2644	Event->signal (
		2645	reentrant => 0,
		2646	data => WF_AUTOCANCEL,
		2647	signal => $signal,
		2648	prio => 0,
		2649	cb => sub {
		2650	cf::cleanup "SIG$signal";
		2651	},
		2652	);
		2653	}
		2654	}
		2655
		2656	sub emergency_save() {
		2657	my $freeze_guard = cf::freeze_mainloop;
		2658
		2659	warn "enter emergency perl save\n";
		2660
		2661	cf::sync_job {
		2662	# use a peculiar iteration method to avoid tripping on perl
		2663	# refcount bugs in for. also avoids problems with players
		2664	# and maps saved/destroyed asynchronously.
		2665	warn "begin emergency player save\n";
		2666	for my $login (keys %cf::PLAYER) {
		2667	my $pl = $cf::PLAYER{$login} or next;
		2668	$pl->valid or next;
		2669	$pl->save;
		2670	}
		2671	warn "end emergency player save\n";
		2672
		2673	warn "begin emergency map save\n";
		2674	for my $path (keys %cf::MAP) {
		2675	my $map = $cf::MAP{$path} or next;
		2676	$map->valid or next;
		2677	$map->save;
		2678	}
		2679	warn "end emergency map save\n";
		2680
		2681	warn "begin emergency database checkpoint\n";
		2682	BDB::db_env_txn_checkpoint $DB_ENV;
		2683	warn "end emergency database checkpoint\n";
		2684	};
		2685
		2686	warn "leave emergency perl save\n";
		2687	}
		2688
		2689	sub post_cleanup {
1077	my ($msg) = @_;	2690	my ($make_core) = @_;
1078		2691
1079	$msg->("reloading...");	2692	warn Carp::longmess "post_cleanup backtrace"
		2693	if $make_core;
		2694	}
1080		2695
1081	eval {	2696	sub do_reload_perl() {
1082	# cancel all watchers	2697	# can/must only be called in main
		2698	if ($Coro::current != $Coro::main) {
		2699	warn "can only reload from main coroutine";
		2700	return;
		2701	}
		2702
		2703	warn "reloading...";
		2704
		2705	warn "entering sync_job";
		2706
		2707	cf::sync_job {
		2708	cf::write_runtime; # external watchdog should not bark
		2709	cf::emergency_save;
		2710	cf::write_runtime; # external watchdog should not bark
		2711
		2712	warn "syncing database to disk";
		2713	BDB::db_env_txn_checkpoint $DB_ENV;
		2714
		2715	# if anything goes wrong in here, we should simply crash as we already saved
		2716
		2717	warn "cancelling all WF_AUTOCANCEL watchers";
1083	$_->cancel for Event::all_watchers;	2718	for (Event::all_watchers) {
		2719	$_->cancel if $_->data & WF_AUTOCANCEL;
		2720	}
1084		2721
1085	# unload all extensions	2722	warn "flushing outstanding aio requests";
1086	for (@exts) {	2723	for (;;) {
1087	$msg->("unloading <$_>");	2724	BDB::flush;
1088	unload_extension $_;	2725	IO::AIO::flush;
		2726	Coro::cede;
		2727	last unless IO::AIO::nreqs || BDB::nreqs;
		2728	warn "iterate...";
		2729	}
		2730
		2731	++$RELOAD;
		2732
		2733	warn "cancelling all extension coros";
		2734	$_->cancel for values %EXT_CORO;
		2735	%EXT_CORO = ();
		2736
		2737	warn "removing commands";
		2738	%COMMAND = ();
		2739
		2740	warn "removing ext commands";
		2741	%EXTCMD = ();
		2742
		2743	warn "unloading/nuking all extensions";
		2744	for my $pkg (@EXTS) {
		2745	warn "... unloading $pkg";
		2746
		2747	if (my $cb = $pkg->can ("unload")) {
		2748	eval {
		2749	$cb->($pkg);
		2750	1
		2751	} or warn "$pkg unloaded, but with errors: $@";
1089	}	2752	}
1090		2753
		2754	warn "... nuking $pkg";
		2755	Symbol::delete_package $pkg;
		2756	}
		2757
1091	# unload all modules loaded from $LIBDIR	2758	warn "unloading all perl modules loaded from $LIBDIR";
1092	while (my ($k, $v) = each %INC) {	2759	while (my ($k, $v) = each %INC) {
1093	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2760	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1094		2761
1095	$msg->("removing <$k>");	2762	warn "... unloading $k";
1096	delete $INC{$k};	2763	delete $INC{$k};
1097		2764
1098	$k =~ s/\.pm$//;	2765	$k =~ s/\.pm$//;
1099	$k =~ s/\//::/g;	2766	$k =~ s/\//::/g;
1100		2767
…		…
1103	}	2770	}
1104		2771
1105	Symbol::delete_package $k;	2772	Symbol::delete_package $k;
1106	}	2773	}
1107		2774
1108	# sync database to disk
1109	cf::db_sync;
1110
1111	# get rid of safe::, as good as possible	2775	warn "getting rid of safe::, as good as possible";
1112	Symbol::delete_package "safe::$_"	2776	Symbol::delete_package "safe::$_"
1113	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2777	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1114		2778
1115	# remove register_script_function callbacks
1116	# TODO
1117
1118	# unload cf.pm "a bit"	2779	warn "unloading cf.pm \"a bit\"";
1119	delete $INC{"cf.pm"};	2780	delete $INC{"cf.pm"};
		2781	delete $INC{"cf/pod.pm"};
1120		2782
1121	# don't, removes xs symbols, too,	2783	# don't, removes xs symbols, too,
1122	# and global variables created in xs	2784	# and global variables created in xs
1123	#Symbol::delete_package __PACKAGE__;	2785	#Symbol::delete_package __PACKAGE__;
1124		2786
1125	# reload cf.pm	2787	warn "unload completed, starting to reload now";
		2788
1126	$msg->("reloading cf.pm");	2789	warn "reloading cf.pm";
1127	require cf;	2790	require cf;
		2791	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1128		2792
1129	# load config and database again	2793	warn "loading config and database again";
1130	cf::cfg_load;	2794	cf::cfg_load;
1131	cf::db_load;
1132		2795
1133	# load extensions	2796	warn "loading extensions";
1134	$msg->("load extensions");
1135	cf::load_extensions;	2797	cf::load_extensions;
1136		2798
1137	# reattach attachments to objects	2799	warn "reattaching attachments to objects/players";
1138	$msg->("reattach");	2800	_global_reattach; # objects, sockets
1139	_global_reattach;	2801	warn "reattaching attachments to maps";
		2802	reattach $_ for values %MAP;
		2803	warn "reattaching attachments to players";
		2804	reattach $_ for values %PLAYER;
		2805
		2806	warn "leaving sync_job";
		2807
		2808	1
		2809	} or do {
		2810	warn $@;
		2811	warn "error while reloading, exiting.";
		2812	exit 1;
1140	};	2813	};
1141	$msg->($@) if $@;
1142		2814
1143	$msg->("reloaded");	2815	warn "reloaded";
1144	};	2816	};
1145		2817
1146	sub perl_reload() {	2818	our $RELOAD_WATCHER; # used only during reload
1147	_perl_reload {	2819
1148	warn $_[0];	2820	sub reload_perl() {
1149	print "$_[0]\n";	2821	# doing reload synchronously and two reloads happen back-to-back,
		2822	# coro crashes during coro_state_free->destroy here.
		2823
		2824	$RELOAD_WATCHER ||= Event->timer (
		2825	reentrant => 0,
		2826	after => 0,
		2827	data => WF_AUTOCANCEL,
		2828	cb => sub {
		2829	do_reload_perl;
		2830	undef $RELOAD_WATCHER;
		2831	},
1150	};	2832	);
1151	}	2833	}
1152		2834
1153	register "<global>", __PACKAGE__;
1154
1155	register_command "perl-reload" => sub {	2835	register_command "reload" => sub {
1156	my ($who, $arg) = @_;	2836	my ($who, $arg) = @_;
1157		2837
1158	if ($who->flag (FLAG_WIZ)) {	2838	if ($who->flag (FLAG_WIZ)) {
1159	_perl_reload {	2839	$who->message ("reloading server.");
1160	warn $_[0];	2840	async { reload_perl };
1161	$who->message ($_[0]);	2841	}
		2842	};
		2843
		2844	unshift @INC, $LIBDIR;
		2845
		2846	my $bug_warning = 0;
		2847
		2848	our @WAIT_FOR_TICK;
		2849	our @WAIT_FOR_TICK_BEGIN;
		2850
		2851	sub wait_for_tick {
		2852	return unless $TICK_WATCHER->is_active;
		2853	return if $Coro::current == $Coro::main;
		2854
		2855	my $signal = new Coro::Signal;
		2856	push @WAIT_FOR_TICK, $signal;
		2857	$signal->wait;
		2858	}
		2859
		2860	sub wait_for_tick_begin {
		2861	return unless $TICK_WATCHER->is_active;
		2862	return if $Coro::current == $Coro::main;
		2863
		2864	my $signal = new Coro::Signal;
		2865	push @WAIT_FOR_TICK_BEGIN, $signal;
		2866	$signal->wait;
		2867	}
		2868
		2869	my $min = 1e6;#d#
		2870	my $avg = 10;
		2871	$TICK_WATCHER = Event->timer (
		2872	reentrant => 0,
		2873	parked => 1,
		2874	prio => 0,
		2875	at => $NEXT_TICK || $TICK,
		2876	data => WF_AUTOCANCEL,
		2877	cb => sub {
		2878	if ($Coro::current != $Coro::main) {
		2879	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2880	unless ++$bug_warning > 10;
		2881	return;
		2882	}
		2883
		2884	$NOW = $tick_start = Event::time;
		2885
		2886	cf::server_tick; # one server iteration
		2887
		2888	0 && sync_job {#d#
		2889	for(1..10) {
		2890	my $t = Event::time;
		2891	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2892	or die;
		2893
		2894	$map->width (50);
		2895	$map->height (50);
		2896	$map->alloc;
		2897	$map->_load_objects ("/tmp/x.map", 1);
		2898	my $t = Event::time - $t;
		2899
		2900	#next unless $t < 0.0013;#d#
		2901	if ($t < $min) {
		2902	$min = $t;
		2903	}
		2904	$avg = $avg * 0.99 + $t * 0.01;
		2905	}
		2906	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2907	exit 0;
		2908	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1162	};	2909	};
1163	}
1164	};
1165		2910
1166	unshift @INC, $LIBDIR;	2911	$RUNTIME += $TICK;
1167
1168	$TICK_WATCHER = Event->timer (
1169	prio => 1,
1170	async => 1,
1171	at => $NEXT_TICK || 1,
1172	cb => sub {
1173	cf::server_tick; # one server iteration
1174
1175	my $NOW = Event::time;
1176	$NEXT_TICK += $TICK;	2912	$NEXT_TICK += $TICK;
		2913
		2914	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2915	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2916	Coro::async_pool {
		2917	write_runtime
		2918	or warn "ERROR: unable to write runtime file: $!";
		2919	};
		2920	}
		2921
		2922	# my $AFTER = Event::time;
		2923	# warn $AFTER - $NOW;#d#
		2924
		2925	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2926	$sig->send;
		2927	}
		2928	while (my $sig = shift @WAIT_FOR_TICK) {
		2929	$sig->send;
		2930	}
		2931
		2932	$NOW = Event::time;
1177		2933
1178	# if we are delayed by four ticks or more, skip them all	2934	# if we are delayed by four ticks or more, skip them all
1179	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2935	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1180		2936
1181	$TICK_WATCHER->at ($NEXT_TICK);	2937	$TICK_WATCHER->at ($NEXT_TICK);
1182	$TICK_WATCHER->start;	2938	$TICK_WATCHER->start;
		2939
		2940	$LOAD = ($NOW - $tick_start) / $TICK;
		2941	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2942
		2943	_post_tick;
		2944
		2945
1183	},	2946	},
1184	);	2947	);
1185		2948
		2949	{
		2950	BDB::max_poll_time $TICK * 0.1;
		2951	$BDB_POLL_WATCHER = Event->io (
		2952	reentrant => 0,
		2953	fd => BDB::poll_fileno,
		2954	poll => 'r',
		2955	prio => 0,
		2956	data => WF_AUTOCANCEL,
		2957	cb => \&BDB::poll_cb,
		2958	);
		2959	BDB::min_parallel 8;
		2960
		2961	BDB::set_sync_prepare {
		2962	my $status;
		2963	my $current = $Coro::current;
		2964	(
		2965	sub {
		2966	$status = $!;
		2967	$current->ready; undef $current;
		2968	},
		2969	sub {
		2970	Coro::schedule while defined $current;
		2971	$! = $status;
		2972	},
		2973	)
		2974	};
		2975
		2976	unless ($DB_ENV) {
		2977	$DB_ENV = BDB::db_env_create;
		2978
		2979	cf::sync_job {
		2980	eval {
		2981	BDB::db_env_open
		2982	$DB_ENV,
		2983	$BDBDIR,
		2984	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2985	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2986	0666;
		2987
		2988	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2989
		2990	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2991	$DB_ENV->set_lk_detect;
		2992	};
		2993
		2994	cf::cleanup "db_env_open(db): $@" if $@;
		2995	};
		2996	}
		2997	}
		2998
		2999	{
		3000	IO::AIO::min_parallel 8;
		3001
		3002	undef $Coro::AIO::WATCHER;
1186	IO::AIO::max_poll_time $TICK * 0.2;	3003	IO::AIO::max_poll_time $TICK * 0.1;
1187		3004	$AIO_POLL_WATCHER = Event->io (
1188	Event->io (fd => IO::AIO::poll_fileno,	3005	reentrant => 0,
		3006	data => WF_AUTOCANCEL,
		3007	fd => IO::AIO::poll_fileno,
1189	poll => 'r',	3008	poll => 'r',
1190	prio => 5,	3009	prio => 6,
1191	cb => \&IO::AIO::poll_cb);	3010	cb => \&IO::AIO::poll_cb,
		3011	);
		3012	}
		3013
		3014	my $_log_backtrace;
		3015
		3016	sub _log_backtrace {
		3017	my ($msg, @addr) = @_;
		3018
		3019	$msg =~ s/\n//;
		3020
		3021	# limit the # of concurrent backtraces
		3022	if ($_log_backtrace < 2) {
		3023	++$_log_backtrace;
		3024	async {
		3025	my @bt = fork_call {
		3026	@addr = map { sprintf "%x", $_ } @addr;
		3027	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3028	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3029	or die "addr2line: $!";
		3030
		3031	my @funcs;
		3032	my @res = <$fh>;
		3033	chomp for @res;
		3034	while (@res) {
		3035	my ($func, $line) = splice @res, 0, 2, ();
		3036	push @funcs, "[$func] $line";
		3037	}
		3038
		3039	@funcs
		3040	};
		3041
		3042	LOG llevInfo, "[ABT] $msg\n";
		3043	LOG llevInfo, "[ABT] $_\n" for @bt;
		3044	--$_log_backtrace;
		3045	};
		3046	} else {
		3047	LOG llevInfo, "[ABT] $msg\n";
		3048	LOG llevInfo, "[ABT] [suppressed]\n";
		3049	}
		3050	}
		3051
		3052	# load additional modules
		3053	use cf::pod;
		3054
		3055	END { cf::emergency_save }
1192		3056
1193	1	3057	1
1194		3058

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