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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.52 by root, Mon Aug 28 16:52:51 2006 UTC vs.
Revision 1.275 by root, Thu Jun 7 19:12:22 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
		15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
		29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
10	use Time::HiRes;	31	use Time::HiRes;
11	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
12	$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
13		41
14	use strict;	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		43	$YAML::Syck::ImplicitUnicode = 1;
15		44
16	_reload_1;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		48
18	our %COMMAND = ();	49	our %COMMAND = ();
		50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
		53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
		56
		57	our $RELOAD; # number of reloads so far
19	our @EVENT;	58	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		59
24	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(!)
25	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	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;
		82
		83	our %CFG;
		84
		85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
		115
		116	#############################################################################
		117
		118	=head2 GLOBAL VARIABLES
		119
		120	=over 4
		121
		122	=item $cf::UPTIME
		123
		124	The timestamp of the server start (so not actually an uptime).
		125
		126	=item $cf::RUNTIME
		127
		128	The time this server has run, starts at 0 and is increased by $cf::TICK on
		129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
		143
		144	=item $cf::TICK
		145
		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.
		157
		158	=item %cf::CFG
		159
		160	Configuration for the server, loaded from C</etc/crossfire/config>, or
		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.
		168
		169	=back
		170
		171	=cut
27		172
28	BEGIN {	173	BEGIN {
29	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
31	$msg .= "\n"	177	$msg .= "\n"
32	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
33		179
34	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
35	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
36	};	184	};
37	}	185	}
38		186
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		194
75	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	196	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	197	for my $pkg (qw(
		198	cf::global cf::attachable
		199	cf::object cf::object::player
		200	cf::client cf::player
		201	cf::arch cf::living
		202	cf::map cf::party cf::region
		203	)) {
78	no strict 'refs';	204	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	205	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	206	}
81		207
82	$Event::DIED = sub {	208	$Event::DIED = sub {
83	warn "error in event callback: @_";	209	warn "error in event callback: @_";
84	};	210	};
85		211
86	my %ext_pkg;	212	=head2 UTILITY FUNCTIONS
87	my @exts;	213
88	my @hook;	214	=over 4
89	my %command;	215
90	my %extcmd;	216	=item dumpval $ref
		217
		218	=cut
		219
		220	sub dumpval {
		221	eval {
		222	local $SIG{__DIE__};
		223	my $d;
		224	if (1) {
		225	$d = new Data::Dumper([$_[0]], ["*var"]);
		226	$d->Terse(1);
		227	$d->Indent(2);
		228	$d->Quotekeys(0);
		229	$d->Useqq(1);
		230	#$d->Bless(...);
		231	$d->Seen($_[1]) if @_ > 1;
		232	$d = $d->Dump();
		233	}
		234	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		235	$d
		236	} || "[unable to dump $_[0]: '$@']";
		237	}
		238
		239	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		240
		241	=item $ref = cf::from_json $json
		242
		243	Converts a JSON string into the corresponding perl data structure.
		244
		245	=item $json = cf::to_json $ref
		246
		247	Converts a perl data structure into its JSON representation.
		248
		249	=item cf::lock_wait $string
		250
		251	Wait until the given lock is available. See cf::lock_acquire.
		252
		253	=item my $lock = cf::lock_acquire $string
		254
		255	Wait until the given lock is available and then acquires it and returns
		256	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		257	for example when the coroutine gets canceled), the lock is automatically
		258	returned.
		259
		260	Lock names should begin with a unique identifier (for example, cf::map::find
		261	uses map_find and cf::map::load uses map_load).
		262
		263	=item $locked = cf::lock_active $string
		264
		265	Return true if the lock is currently active, i.e. somebody has locked it.
		266
		267	=cut
		268
		269	our %LOCK;
		270
		271	sub lock_wait($) {
		272	my ($key) = @_;
		273
		274	# wait for lock, if any
		275	while ($LOCK{$key}) {
		276	push @{ $LOCK{$key} }, $Coro::current;
		277	Coro::schedule;
		278	}
		279	}
		280
		281	sub lock_acquire($) {
		282	my ($key) = @_;
		283
		284	# wait, to be sure we are not locked
		285	lock_wait $key;
		286
		287	$LOCK{$key} = [];
		288
		289	Coro::guard {
		290	# wake up all waiters, to be on the safe side
		291	$_->ready for @{ delete $LOCK{$key} };
		292	}
		293	}
		294
		295	sub lock_active($) {
		296	my ($key) = @_;
		297
		298	! ! $LOCK{$key}
		299	}
		300
		301	sub freeze_mainloop {
		302	return unless $TICK_WATCHER->is_active;
		303
		304	my $guard = Coro::guard {
		305	$TICK_WATCHER->start;
		306	};
		307	$TICK_WATCHER->stop;
		308	$guard
		309	}
		310
		311	=item cf::async { BLOCK }
		312
		313	Currently the same as Coro::async_pool, meaning you cannot use
		314	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		315	thing you are allowed to do is call C<prio> on it.
		316
		317	=cut
		318
		319	BEGIN { *async = \&Coro::async_pool }
		320
		321	=item cf::sync_job { BLOCK }
		322
		323	The design of crossfire+ requires that the main coro ($Coro::main) is
		324	always able to handle events or runnable, as crossfire+ is only partly
		325	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		326
		327	If it must be done, put the blocking parts into C<sync_job>. This will run
		328	the given BLOCK in another coroutine while waiting for the result. The
		329	server will be frozen during this time, so the block should either finish
		330	fast or be very important.
		331
		332	=cut
		333
		334	sub sync_job(&) {
		335	my ($job) = @_;
		336
		337	if ($Coro::current == $Coro::main) {
		338	my $time = Event::time;
		339
		340	# this is the main coro, too bad, we have to block
		341	# till the operation succeeds, freezing the server :/
		342
		343	# TODO: use suspend/resume instead
		344	# (but this is cancel-safe)
		345	my $freeze_guard = freeze_mainloop;
		346
		347	my $busy = 1;
		348	my @res;
		349
		350	(async {
		351	@res = eval { $job->() };
		352	warn $@ if $@;
		353	undef $busy;
		354	})->prio (Coro::PRIO_MAX);
		355
		356	while ($busy) {
		357	Coro::cede or Event::one_event;
		358	}
		359
		360	$time = Event::time - $time;
		361
		362	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		363	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		364
		365	$tick_start += $time; # do not account sync jobs to server load
		366
		367	wantarray ? @res : $res[0]
		368	} else {
		369	# we are in another coroutine, how wonderful, everything just works
		370
		371	$job->()
		372	}
		373	}
		374
		375	=item $coro = cf::async_ext { BLOCK }
		376
		377	Like async, but this coro is automatically being canceled when the
		378	extension calling this is being unloaded.
		379
		380	=cut
		381
		382	sub async_ext(&) {
		383	my $cb = shift;
		384
		385	my $coro = &Coro::async ($cb);
		386
		387	$coro->on_destroy (sub {
		388	delete $EXT_CORO{$coro+0};
		389	});
		390	$EXT_CORO{$coro+0} = $coro;
		391
		392	$coro
		393	}
		394
		395	sub write_runtime {
		396	my $runtime = "$LOCALDIR/runtime";
		397
		398	# first touch the runtime file to show we are still running:
		399	# the fsync below can take a very very long time.
		400
		401	IO::AIO::aio_utime $runtime, undef, undef;
		402
		403	my $guard = cf::lock_acquire "write_runtime";
		404
		405	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		406	or return;
		407
		408	my $value = $cf::RUNTIME + 90 + 10;
		409	# 10 is the runtime save interval, for a monotonic clock
		410	# 60 allows for the watchdog to kill the server.
		411
		412	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		413	and return;
		414
		415	# always fsync - this file is important
		416	aio_fsync $fh
		417	and return;
		418
		419	# touch it again to show we are up-to-date
		420	aio_utime $fh, undef, undef;
		421
		422	close $fh
		423	or return;
		424
		425	aio_rename "$runtime~", $runtime
		426	and return;
		427
		428	warn "runtime file written.\n";
		429
		430	1
		431	}
		432
		433	=item cf::datalog type => key => value, ...
		434
		435	Log a datalog packet of the given type with the given key-value pairs.
		436
		437	=cut
		438
		439	sub datalog($@) {
		440	my ($type, %kv) = @_;
		441	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		442	}
		443
		444	=back
		445
		446	=cut
91		447
92	#############################################################################	448	#############################################################################
93	# utility functions
94		449
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	450	=head2 ATTACHABLE OBJECTS
96		451
97	sub from_json($) {	452	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	453	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	454	to it. All such attachable objects support the following methods.
100	}
101		455
102	sub to_json($) {	456	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	457	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	458	crossfire+).
105	}
106		459
107	#############################################################################	460	=over 4
108	# "new" plug-in system
109		461
110	=item $object->attach ($attachment, key => $value...)	462	=item $attachable->attach ($attachment, key => $value...)
111		463
112	Attach a pre-registered attachment to an object.	464	=item $attachable->detach ($attachment)
113		465
114	=item $player->attach ($attachment, key => $value...)	466	Attach/detach a pre-registered attachment to a specific object and give it
		467	the specified key/value pairs as arguments.
115		468
116	Attach a pre-registered attachment to a player.	469	Example, attach a minesweeper attachment to the given object, making it a
		470	10x10 minesweeper game:
117		471
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	472	$obj->attach (minesweeper => width => 10, height => 10);
119		473
120	Attach a pre-registered attachment to a map.	474	=item $bool = $attachable->attached ($name)
121		475
122	=item cf::attach_global ...	476	Checks wether the named attachment is currently attached to the object.
123		477
124	Attach handlers for global events.	478	=item cf::CLASS->attach ...
125		479
126	This and all following C<attach_*>-functions expect any number of the	480	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	481
		482	Define an anonymous attachment and attach it to all objects of the given
		483	CLASS. See the next function for an explanation of its arguments.
		484
		485	You can attach to global events by using the C<cf::global> class.
		486
		487	Example, log all player logins:
		488
		489	cf::player->attach (
		490	on_login => sub {
		491	my ($pl) = @_;
		492	...
		493	},
		494	);
		495
		496	Example, attach to the jeweler skill:
		497
		498	cf::object->attach (
		499	type => cf::SKILL,
		500	subtype => cf::SK_JEWELER,
		501	on_use_skill => sub {
		502	my ($sk, $ob, $part, $dir, $msg) = @_;
		503	...
		504	},
		505	);
		506
		507	=item cf::CLASS::attachment $name, ...
		508
		509	Register an attachment by C<$name> through which attachable objects of the
		510	given CLASS can refer to this attachment.
		511
		512	Some classes such as crossfire maps and objects can specify attachments
		513	that are attached at load/instantiate time, thus the need for a name.
		514
		515	These calls expect any number of the following handler/hook descriptions:
128		516
129	=over 4	517	=over 4
130		518
131	=item prio => $number	519	=item prio => $number
132		520
…		…
134	by another C<prio> setting). Lower priority handlers get executed	522	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	523	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	524	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	525	unless you know what you are doing.
138		526
		527	=item type => $type
		528
		529	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		530	given type of objects only (the additional parameter C<subtype> can be
		531	used to further limit to the given subtype).
		532
139	=item on_I<event> => \&cb	533	=item on_I<event> => \&cb
140		534
141	Call the given code reference whenever the named event happens (event is	535	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	536	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	537	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	546	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	547	object/class are recognised.
154		548
155	=back	549	=back
156		550
157	=item cf::attach_to_type $object_type, $subtype, ...	551	Example, define an attachment called "sockpuppet" that calls the given
		552	event handler when a monster attacks:
158		553
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	554	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	555	on_skill_attack => sub {
161	type.	556	my ($self, $victim) = @_;
		557	...
		558	}
		559	}
162		560
163	=item cf::attach_to_objects ...	561	=item $attachable->valid
164		562
165	Attach handlers to all objects. Do not use this except for debugging or	563	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	564	C-level object still exists. If you try to access an object that has no
167	the game.	565	valid C counterpart anymore you get an exception at runtime. This method
168		566	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	567	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178
179	Register an attachment by name through which objects can refer to this
180	attachment.
181
182	=item cf:register_map_attachment $name, ...
183
184	Register an attachment by name through which maps can refer to this
185	attachment.
186		568
187	=cut	569	=cut
188		570
189	# the following variables are defined in .xs and must not be re-created	571	# the following variables are defined in .xs and must not be re-created
190	our @CB_GLOBAL = (); # registry for all global events	572	our @CB_GLOBAL = (); # registry for all global events
		573	our @CB_ATTACHABLE = (); # registry for all attachables
191	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	574	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
192	our @CB_PLAYER = ();	575	our @CB_PLAYER = ();
		576	our @CB_CLIENT = ();
193	our @CB_TYPE = (); # registry for type (cf-object class) based events	577	our @CB_TYPE = (); # registry for type (cf-object class) based events
194	our @CB_MAP = ();	578	our @CB_MAP = ();
195		579
196	my %attachment;	580	my %attachment;
197		581
		582	sub cf::attachable::thawer_merge {
		583	# simply override everything except _meta
		584	local $_[0]{_meta};
		585	%{$_[0]} = %{$_[1]};
		586	}
		587
198	sub _attach_cb($\%$$$) {	588	sub _attach_cb($$$$) {
199	my ($registry, $undo, $event, $prio, $cb) = @_;	589	my ($registry, $event, $prio, $cb) = @_;
200		590
201	use sort 'stable';	591	use sort 'stable';
202		592
203	$cb = [$prio, $cb];	593	$cb = [$prio, $cb];
204		594
205	@{$registry->[$event]} = sort	595	@{$registry->[$event]} = sort
206	{ $a->[0] cmp $b->[0] }	596	{ $a->[0] cmp $b->[0] }
207	@{$registry->[$event] || []}, $cb;	597	@{$registry->[$event] || []}, $cb;
208
209	push @{$undo->{cb}}, [$event, $cb];
210	}	598	}
		599
		600	# hack
		601	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
211		602
212	# attach handles attaching event callbacks	603	# attach handles attaching event callbacks
213	# the only thing the caller has to do is pass the correct	604	# the only thing the caller has to do is pass the correct
214	# registry (== where the callback attaches to).	605	# registry (== where the callback attaches to).
215	sub _attach(\@$@) {	606	sub _attach {
216	my ($registry, $klass, @arg) = @_;	607	my ($registry, $klass, @arg) = @_;
217		608
		609	my $object_type;
218	my $prio = 0;	610	my $prio = 0;
219
220	my %undo = (
221	registry => $registry,
222	cb => [],
223	);
224
225	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	611	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		612
		613	#TODO: get rid of this hack
		614	if ($attachable_klass{$klass}) {
		615	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		616	}
226		617
227	while (@arg) {	618	while (@arg) {
228	my $type = shift @arg;	619	my $type = shift @arg;
229		620
230	if ($type eq "prio") {	621	if ($type eq "prio") {
231	$prio = shift @arg;	622	$prio = shift @arg;
232		623
		624	} elsif ($type eq "type") {
		625	$object_type = shift @arg;
		626	$registry = $CB_TYPE[$object_type] ||= [];
		627
		628	} elsif ($type eq "subtype") {
		629	defined $object_type or Carp::croak "subtype specified without type";
		630	my $object_subtype = shift @arg;
		631	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		632
233	} elsif ($type eq "package") {	633	} elsif ($type eq "package") {
234	my $pkg = shift @arg;	634	my $pkg = shift @arg;
235		635
236	while (my ($name, $id) = each %cb_id) {	636	while (my ($name, $id) = each %cb_id) {
237	if (my $cb = $pkg->can ($name)) {	637	if (my $cb = $pkg->can ($name)) {
238	_attach_cb $registry, %undo, $id, $prio, $cb;	638	_attach_cb $registry, $id, $prio, $cb;
239	}	639	}
240	}	640	}
241		641
242	} elsif (exists $cb_id{$type}) {	642	} elsif (exists $cb_id{$type}) {
243	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	643	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
244		644
245	} elsif (ref $type) {	645	} elsif (ref $type) {
246	warn "attaching objects not supported, ignoring.\n";	646	warn "attaching objects not supported, ignoring.\n";
247		647
248	} else {	648	} else {
249	shift @arg;	649	shift @arg;
250	warn "attach argument '$type' not supported, ignoring.\n";	650	warn "attach argument '$type' not supported, ignoring.\n";
251	}	651	}
252	}	652	}
253
254	\%undo
255	}	653	}
256		654
257	sub _attach_attachment {	655	sub _object_attach {
258	my ($obj, $name, %arg) = @_;	656	my ($obj, $name, %arg) = @_;
259		657
260	my $res;	658	return if exists $obj->{_attachment}{$name};
261		659
262	if (my $attach = $attachment{$name}) {	660	if (my $attach = $attachment{$name}) {
263	my $registry = $obj->registry;	661	my $registry = $obj->registry;
264		662
265	for (@$attach) {	663	for (@$attach) {
266	my ($klass, @attach) = @$_;	664	my ($klass, @attach) = @$_;
267	$res = _attach @$registry, $klass, @attach;	665	_attach $registry, $klass, @attach;
268	}	666	}
269		667
270	$obj->{$name} = \%arg;	668	$obj->{$name} = \%arg;
271	} else {	669	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	670	warn "object uses attachment '$name' that is not available, postponing.\n";
273	}	671	}
274		672
275	$obj->{_attachment}{$name} = undef;	673	$obj->{_attachment}{$name} = undef;
276
277	$res->{attachment} = $name;
278	$res
279	}	674	}
280		675
281	sub cf::object::attach {	676	sub cf::attachable::attach {
		677	if (ref $_[0]) {
		678	_object_attach @_;
		679	} else {
		680	_attach shift->_attach_registry, @_;
		681	}
		682	_recalc_want;
		683	};
		684
		685	# all those should be optimised
		686	sub cf::attachable::detach {
282	my ($obj, $name, %arg) = @_;	687	my ($obj, $name) = @_;
283		688
284	_attach_attachment $obj, $name, %arg;	689	if (ref $obj) {
285	}	690	delete $obj->{_attachment}{$name};
		691	reattach ($obj);
		692	} else {
		693	Carp::croak "cannot, currently, detach class attachments";
		694	}
		695	_recalc_want;
		696	};
286		697
287	sub cf::player::attach {	698	sub cf::attachable::attached {
288	my ($obj, $name, %arg) = @_;	699	my ($obj, $name) = @_;
289		700
290	_attach_attachment $obj, $name, %arg;	701	exists $obj->{_attachment}{$name}
291	}	702	}
292		703
293	sub cf::map::attach {	704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
294	my ($obj, $name, %arg) = @_;	705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
295		709
296	_attach_attachment $obj, $name, %arg;	710	sub cf::\L$klass\E::attachment {
297	}
298
299	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}
302
303	sub attach_to_type {
304	my $type = shift;
305	my $subtype = shift;
306
307	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
308	}
309
310	sub attach_to_objects {
311	_attach @CB_OBJECT, KLASS_OBJECT, @_
312	}
313
314	sub attach_to_players {
315	_attach @CB_PLAYER, KLASS_PLAYER, @_
316	}
317
318	sub attach_to_maps {
319	_attach @CB_MAP, KLASS_MAP, @_
320	}
321
322	sub register_attachment {
323	my $name = shift;	711	my \$name = shift;
324		712
325	$attachment{$name} = [[KLASS_OBJECT, @_]];
326	}
327
328	sub register_map_attachment {
329	my $name = shift;
330
331	$attachment{$name} = [[KLASS_MAP, @_]];	713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
332	}	717	}
333		718
334	our $override;	719	our $override;
335	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
336		721
…		…
350	for (@$callbacks) {	735	for (@$callbacks) {
351	eval { &{$_->[1]} };	736	eval { &{$_->[1]} };
352		737
353	if ($@) {	738	if ($@) {
354	warn "$@";	739	warn "$@";
355	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
356	override;	741	override;
357	}	742	}
358		743
359	return 1 if $override;	744	return 1 if $override;
360	}	745	}
361		746
362	0	747	0
363	}	748	}
		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
		760	=back
		761
		762	=cut
364		763
365	#############################################################################	764	#############################################################################
366	# object support	765	# object support
367		766
368	sub instantiate {
369	my ($obj, $data) = @_;
370
371	$data = from_json $data;
372
373	for (@$data) {
374	my ($name, $args) = @$_;
375
376	$obj->attach ($name, %{$args || {} });
377	}
378	}
379
380	# basically do the same as instantiate, without calling instantiate
381	sub reattach {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
382	my ($obj) = @_;	769	my ($obj) = @_;
		770
		771	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		772
383	my $registry = $obj->registry;	773	my $registry = $obj->registry;
384		774
385	@$registry = ();	775	@$registry = ();
386		776
387	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	777	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
388		778
389	for my $name (keys %{ $obj->{_attachment} || {} }) {	779	for my $name (keys %{ $obj->{_attachment} || {} }) {
390	if (my $attach = $attachment{$name}) {	780	if (my $attach = $attachment{$name}) {
391	for (@$attach) {	781	for (@$attach) {
392	my ($klass, @attach) = @$_;	782	my ($klass, @attach) = @$_;
393	_attach @$registry, $klass, @attach;	783	_attach $registry, $klass, @attach;
394	}	784	}
395	} else {	785	} else {
396	warn "object uses attachment '$name' that is not available, postponing.\n";	786	warn "object uses attachment '$name' that is not available, postponing.\n";
397	}	787	}
398	}	788	}
399	}	789	}
400		790
401	sub object_freezer_save {	791	cf::attachable->attach (
402	my ($filename, $objs) = @_;
403
404	if (@$objs) {
405	open my $fh, ">:raw", "$filename.pst~";
406	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
407	close $fh;
408	chmod SAVE_MODE, "$filename.pst~";
409	rename "$filename.pst~", "$filename.pst";
410	} else {
411	unlink "$filename.pst";
412	}
413
414	chmod SAVE_MODE, "$filename~";
415	rename "$filename~", $filename;
416	}
417
418	sub object_thawer_load {
419	my ($filename) = @_;
420
421	open my $fh, "<:raw:perlio", "$filename.pst"
422	or return;
423
424	eval { local $/; (Storable::thaw <$fh>)->{objs} }
425	}
426
427	attach_to_objects
428	prio => -1000000,	792	prio => -1000000,
		793	on_instantiate => sub {
		794	my ($obj, $data) = @_;
		795
		796	$data = from_json $data;
		797
		798	for (@$data) {
		799	my ($name, $args) = @$_;
		800
		801	$obj->attach ($name, %{$args || {} });
		802	}
		803	},
		804	on_reattach => \&reattach,
429	on_clone => sub {	805	on_clone => sub {
430	my ($src, $dst) = @_;	806	my ($src, $dst) = @_;
431		807
432	@{$dst->registry} = @{$src->registry};	808	@{$dst->registry} = @{$src->registry};
433		809
434	%$dst = %$src;	810	%$dst = %$src;
435		811
436	%{$dst->{_attachment}} = %{$src->{_attachment}}	812	%{$dst->{_attachment}} = %{$src->{_attachment}}
437	if exists $src->{_attachment};	813	if exists $src->{_attachment};
438	},	814	},
439	;	815	);
		816
		817	sub object_freezer_save {
		818	my ($filename, $rdata, $objs) = @_;
		819
		820	sync_job {
		821	if (length $$rdata) {
		822	warn sprintf "saving %s (%d,%d)\n",
		823	$filename, length $$rdata, scalar @$objs;
		824
		825	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		826	chmod SAVE_MODE, $fh;
		827	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		828	aio_fsync $fh if $cf::USE_FSYNC;
		829	close $fh;
		830
		831	if (@$objs) {
		832	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		833	chmod SAVE_MODE, $fh;
		834	my $data = Storable::nfreeze { version => 1, objs => $objs };
		835	aio_write $fh, 0, (length $data), $data, 0;
		836	aio_fsync $fh if $cf::USE_FSYNC;
		837	close $fh;
		838	aio_rename "$filename.pst~", "$filename.pst";
		839	}
		840	} else {
		841	aio_unlink "$filename.pst";
		842	}
		843
		844	aio_rename "$filename~", $filename;
		845	} else {
		846	warn "FATAL: $filename~: $!\n";
		847	}
		848	} else {
		849	aio_unlink $filename;
		850	aio_unlink "$filename.pst";
		851	}
		852	}
		853	}
		854
		855	sub object_freezer_as_string {
		856	my ($rdata, $objs) = @_;
		857
		858	use Data::Dumper;
		859
		860	$$rdata . Dumper $objs
		861	}
		862
		863	sub object_thawer_load {
		864	my ($filename) = @_;
		865
		866	my ($data, $av);
		867
		868	(aio_load $filename, $data) >= 0
		869	or return;
		870
		871	unless (aio_stat "$filename.pst") {
		872	(aio_load "$filename.pst", $av) >= 0
		873	or return;
		874	$av = eval { (Storable::thaw $av)->{objs} };
		875	}
		876
		877	warn sprintf "loading %s (%d)\n",
		878	$filename, length $data, scalar @{$av || []};
		879	return ($data, $av);
		880	}
440		881
441	#############################################################################	882	#############################################################################
442	# old plug-in events	883	# command handling &c
443		884
444	sub inject_event {	885	=item cf::register_command $name => \&callback($ob,$args);
445	my $extension = shift;
446	my $event_code = shift;
447		886
448	my $cb = $hook[$event_code]{$extension}	887	Register a callback for execution when the client sends the user command
449	or return;	888	$name.
450		889
451	&$cb	890	=cut
452	}
453
454	sub inject_global_event {
455	my $event = shift;
456
457	my $cb = $hook[$event]
458	or return;
459
460	List::Util::max map &$_, values %$cb
461	}
462
463	sub inject_command {
464	my ($name, $obj, $params) = @_;
465
466	for my $cmd (@{ $command{$name} }) {
467	$cmd->[1]->($obj, $params);
468	}
469
470	-1
471	}
472		891
473	sub register_command {	892	sub register_command {
474	my ($name, $time, $cb) = @_;	893	my ($name, $cb) = @_;
475		894
476	my $caller = caller;	895	my $caller = caller;
477	#warn "registering command '$name/$time' to '$caller'";	896	#warn "registering command '$name/$time' to '$caller'";
478		897
479	push @{ $command{$name} }, [$time, $cb, $caller];	898	push @{ $COMMAND{$name} }, [$caller, $cb];
480	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
481	}	899	}
		900
		901	=item cf::register_extcmd $name => \&callback($pl,$packet);
		902
		903	Register a callbackf ro execution when the client sends an extcmd packet.
		904
		905	If the callback returns something, it is sent back as if reply was being
		906	called.
		907
		908	=cut
482		909
483	sub register_extcmd {	910	sub register_extcmd {
484	my ($name, $cb) = @_;	911	my ($name, $cb) = @_;
485		912
486	my $caller = caller;	913	$EXTCMD{$name} = $cb;
487	#warn "registering extcmd '$name' to '$caller'";
488
489	$extcmd{$name} = [$cb, $caller];
490	}	914	}
491		915
492	sub register {	916	cf::player->attach (
493	my ($base, $pkg) = @_;	917	on_command => sub {
		918	my ($pl, $name, $params) = @_;
494		919
495	#TODO	920	my $cb = $COMMAND{$name}
496	}	921	or return;
		922
		923	for my $cmd (@$cb) {
		924	$cmd->[1]->($pl->ob, $params);
		925	}
		926
		927	cf::override;
		928	},
		929	on_extcmd => sub {
		930	my ($pl, $buf) = @_;
		931
		932	my $msg = eval { from_json $buf };
		933
		934	if (ref $msg) {
		935	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		936	if (my %reply = $cb->($pl, $msg)) {
		937	$pl->ext_reply ($msg->{msgid}, %reply);
		938	}
		939	}
		940	} else {
		941	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		942	}
		943
		944	cf::override;
		945	},
		946	);
497		947
498	sub load_extension {	948	sub load_extension {
499	my ($path) = @_;	949	my ($path) = @_;
500		950
501	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	951	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
502	my $base = $1;	952	my $base = $1;
503	my $pkg = $1;	953	my $pkg = $1;
504	$pkg =~ s/[^[:word:]]/_/g;	954	$pkg =~ s/[^[:word:]]/_/g;
505	$pkg = "ext::$pkg";	955	$pkg = "ext::$pkg";
506		956
507	warn "loading '$path' into '$pkg'\n";	957	warn "... loading '$path' into '$pkg'\n";
508		958
509	open my $fh, "<:utf8", $path	959	open my $fh, "<:utf8", $path
510	or die "$path: $!";	960	or die "$path: $!";
511		961
512	my $source =	962	my $source =
513	"package $pkg; use strict; use utf8;\n"	963	"package $pkg; use strict; use utf8;\n"
514	. "#line 1 \"$path\"\n{\n"	964	. "#line 1 \"$path\"\n{\n"
515	. (do { local $/; <$fh> })	965	. (do { local $/; <$fh> })
516	. "\n};\n1";	966	. "\n};\n1";
517		967
518	eval $source	968	unless (eval $source) {
519	or die "$path: $@";	969	my $msg = $@ ? "$path: $@\n"
520		970	: "extension disabled.\n";
521	push @exts, $pkg;	971	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
522	$ext_pkg{$base} = $pkg;	972	warn $@;
523		973	warn "mandatory extension failed to load, exiting.\n";
524	# no strict 'refs';	974	exit 1;
525	# @{"$pkg\::ISA"} = ext::;	975	}
526		976	die $@;
527	register $base, $pkg;
528	}
529
530	sub unload_extension {
531	my ($pkg) = @_;
532
533	warn "removing extension $pkg\n";
534
535	# remove hooks
536	#TODO
537	# for my $idx (0 .. $#PLUGIN_EVENT) {
538	# delete $hook[$idx]{$pkg};
539	# }	977	}
540		978
541	# remove commands	979	push @EXTS, $pkg;
542	for my $name (keys %command) {
543	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
544
545	if (@cb) {
546	$command{$name} = \@cb;
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
548	} else {
549	delete $command{$name};
550	delete $COMMAND{"$name\000"};
551	}
552	}
553
554	# remove extcmds
555	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
556	delete $extcmd{$name};
557	}
558
559	if (my $cb = $pkg->can ("unload")) {
560	eval {
561	$cb->($pkg);
562	1
563	} or warn "$pkg unloaded, but with errors: $@";
564	}
565
566	Symbol::delete_package $pkg;
567	}	980	}
568		981
569	sub load_extensions {	982	sub load_extensions {
570	my $LIBDIR = maps_directory "perl";
571
572	for my $ext (<$LIBDIR/*.ext>) {	983	for my $ext (<$LIBDIR/*.ext>) {
573	next unless -r $ext;	984	next unless -r $ext;
574	eval {	985	eval {
575	load_extension $ext;	986	load_extension $ext;
576	1	987	1
577	} or warn "$ext not loaded: $@";	988	} or warn "$ext not loaded: $@";
578	}	989	}
579	}	990	}
580		991
581	sub _perl_reload(&) {	992	#############################################################################
		993
		994	=head2 CORE EXTENSIONS
		995
		996	Functions and methods that extend core crossfire objects.
		997
		998	=cut
		999
		1000	package cf::player;
		1001
		1002	use Coro::AIO;
		1003
		1004	=head3 cf::player
		1005
		1006	=over 4
		1007
		1008	=item cf::player::find $login
		1009
		1010	Returns the given player object, loading it if necessary (might block).
		1011
		1012	=cut
		1013
		1014	sub playerdir($) {
		1015	"$PLAYERDIR/"
		1016	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1017	}
		1018
		1019	sub path($) {
		1020	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1021
		1022	(playerdir $login) . "/playerdata"
		1023	}
		1024
		1025	sub find_active($) {
		1026	$cf::PLAYER{$_[0]}
		1027	and $cf::PLAYER{$_[0]}->active
		1028	and $cf::PLAYER{$_[0]}
		1029	}
		1030
		1031	sub exists($) {
		1032	my ($login) = @_;
		1033
		1034	$cf::PLAYER{$login}
		1035	or cf::sync_job { !aio_stat path $login }
		1036	}
		1037
		1038	sub find($) {
		1039	return $cf::PLAYER{$_[0]} || do {
		1040	my $login = $_[0];
		1041
		1042	my $guard = cf::lock_acquire "user_find:$login";
		1043
		1044	$cf::PLAYER{$_[0]} || do {
		1045	# rename old playerfiles to new ones
		1046	#TODO: remove when no longer required
		1047	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1048	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1049	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1050	aio_unlink +(playerdir $login) . "/$login.pl";
		1051
		1052	my $pl = load_pl path $login
		1053	or return;
		1054	$cf::PLAYER{$login} = $pl
		1055	}
		1056	}
		1057	}
		1058
		1059	sub save($) {
		1060	my ($pl) = @_;
		1061
		1062	return if $pl->{deny_save};
		1063
		1064	my $path = path $pl;
		1065	my $guard = cf::lock_acquire "user_save:$path";
		1066
		1067	return if $pl->{deny_save};
		1068
		1069	aio_mkdir playerdir $pl, 0770;
		1070	$pl->{last_save} = $cf::RUNTIME;
		1071
		1072	$pl->save_pl ($path);
		1073	Coro::cede;
		1074	}
		1075
		1076	sub new($) {
		1077	my ($login) = @_;
		1078
		1079	my $self = create;
		1080
		1081	$self->ob->name ($login);
		1082	$self->{deny_save} = 1;
		1083
		1084	$cf::PLAYER{$login} = $self;
		1085
		1086	$self
		1087	}
		1088
		1089	=item $pl->quit_character
		1090
		1091	Nukes the player without looking back. If logged in, the connection will
		1092	be destroyed. May block for a long time.
		1093
		1094	=cut
		1095
		1096	sub quit_character {
		1097	my ($pl) = @_;
		1098
		1099	my $name = $pl->ob->name;
		1100
		1101	$pl->{deny_save} = 1;
		1102	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1103
		1104	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1105	$pl->deactivate;
		1106	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1107	$pl->ns->destroy if $pl->ns;
		1108
		1109	my $path = playerdir $pl;
		1110	my $temp = "$path~$cf::RUNTIME~deleting~";
		1111	aio_rename $path, $temp;
		1112	delete $cf::PLAYER{$pl->ob->name};
		1113	$pl->destroy;
		1114
		1115	my $prefix = qr<^~\Q$name\E/>;
		1116
		1117	# nuke player maps
		1118	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1119
		1120	IO::AIO::aio_rmtree $temp;
		1121	}
		1122
		1123	=item $pl->kick
		1124
		1125	Kicks a player out of the game. This destroys the connection.
		1126
		1127	=cut
		1128
		1129	sub kick {
		1130	my ($pl, $kicker) = @_;
		1131
		1132	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1133	$pl->killer ("kicked");
		1134	$pl->ns->destroy;
		1135	}
		1136
		1137	=item cf::player::list_logins
		1138
		1139	Returns am arrayref of all valid playernames in the system, can take a
		1140	while and may block, so not sync_job-capable, ever.
		1141
		1142	=cut
		1143
		1144	sub list_logins {
		1145	my $dirs = aio_readdir $PLAYERDIR
		1146	or return [];
		1147
		1148	my @logins;
		1149
		1150	for my $login (@$dirs) {
		1151	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1152	aio_read $fh, 0, 512, my $buf, 0 or next;
		1153	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1154
		1155	utf8::decode $login;
		1156	push @logins, $login;
		1157	}
		1158
		1159	\@logins
		1160	}
		1161
		1162	=item $player->maps
		1163
		1164	Returns an arrayref of map paths that are private for this
		1165	player. May block.
		1166
		1167	=cut
		1168
		1169	sub maps($) {
		1170	my ($pl) = @_;
		1171
		1172	$pl = ref $pl ? $pl->ob->name : $pl;
		1173
		1174	my $files = aio_readdir playerdir $pl
		1175	or return;
		1176
		1177	my @paths;
		1178
		1179	for (@$files) {
		1180	utf8::decode $_;
		1181	next if /\.(?:pl|pst)$/;
		1182	next unless /^$PATH_SEP/o;
		1183
		1184	push @paths, cf::map::normalise "~$pl/$_";
		1185	}
		1186
		1187	\@paths
		1188	}
		1189
		1190	=item $player->ext_reply ($msgid, %msg)
		1191
		1192	Sends an ext reply to the player.
		1193
		1194	=cut
		1195
		1196	sub ext_reply($$%) {
		1197	my ($self, $id, %msg) = @_;
		1198
		1199	$msg{msgid} = $id;
		1200
		1201	$self->send ("ext " . cf::to_json \%msg);
		1202	}
		1203
		1204	=item $player->ext_event ($type, %msg)
		1205
		1206	Sends an ext event to the client.
		1207
		1208	=cut
		1209
		1210	sub ext_event($$%) {
		1211	my ($self, $type, %msg) = @_;
		1212
		1213	$self->ns->ext_event ($type, %msg);
		1214	}
		1215
		1216	=head3 cf::region
		1217
		1218	=over 4
		1219
		1220	=cut
		1221
		1222	package cf::region;
		1223
		1224	=item cf::region::find_by_path $path
		1225
		1226	Tries to decuce the probable region for a map knowing only its path.
		1227
		1228	=cut
		1229
		1230	sub find_by_path($) {
		1231	my ($path) = @_;
		1232
		1233	my ($match, $specificity);
		1234
		1235	for my $region (list) {
		1236	if ($region->match && $path =~ $region->match) {
		1237	($match, $specificity) = ($region, $region->specificity)
		1238	if $region->specificity > $specificity;
		1239	}
		1240	}
		1241
		1242	$match
		1243	}
		1244
		1245	=back
		1246
		1247	=head3 cf::map
		1248
		1249	=over 4
		1250
		1251	=cut
		1252
		1253	package cf::map;
		1254
		1255	use Fcntl;
		1256	use Coro::AIO;
		1257
		1258	use overload
		1259	'""' => \&as_string,
		1260	fallback => 1;
		1261
		1262	our $MAX_RESET = 3600;
		1263	our $DEFAULT_RESET = 3000;
		1264
		1265	sub generate_random_map {
		1266	my ($self, $rmp) = @_;
		1267	# mit "rum" bekleckern, nicht
		1268	$self->_create_random_map (
		1269	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1270	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1271	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1272	$rmp->{exit_on_final_map},
		1273	$rmp->{xsize}, $rmp->{ysize},
		1274	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1275	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1276	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1277	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1278	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1279	(cf::region::find $rmp->{region}), $rmp->{custom}
		1280	)
		1281	}
		1282
		1283	=item cf::map->register ($regex, $prio)
		1284
		1285	Register a handler for the map path matching the given regex at the
		1286	givne priority (higher is better, built-in handlers have priority 0, the
		1287	default).
		1288
		1289	=cut
		1290
		1291	sub register {
		1292	my (undef, $regex, $prio) = @_;
		1293	my $pkg = caller;
		1294
		1295	no strict;
		1296	push @{"$pkg\::ISA"}, __PACKAGE__;
		1297
		1298	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1299	}
		1300
		1301	# also paths starting with '/'
		1302	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1303
		1304	sub thawer_merge {
		1305	my ($self, $merge) = @_;
		1306
		1307	# we have to keep some variables in memory intact
		1308	local $self->{path};
		1309	local $self->{load_path};
		1310
		1311	$self->SUPER::thawer_merge ($merge);
		1312	}
		1313
		1314	sub normalise {
		1315	my ($path, $base) = @_;
		1316
		1317	$path = "$path"; # make sure its a string
		1318
		1319	$path =~ s/\.map$//;
		1320
		1321	# map plan:
		1322	#
		1323	# /! non-realised random map exit (special hack!)
		1324	# {... are special paths that are not being touched
		1325	# ?xxx/... are special absolute paths
		1326	# ?random/... random maps
		1327	# /... normal maps
		1328	# ~user/... per-player map of a specific user
		1329
		1330	$path =~ s/$PATH_SEP/\//go;
		1331
		1332	# treat it as relative path if it starts with
		1333	# something that looks reasonable
		1334	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1335	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1336
		1337	$base =~ s{[^/]+/?$}{};
		1338	$path = "$base/$path";
		1339	}
		1340
		1341	for ($path) {
		1342	redo if s{//}{/};
		1343	redo if s{/\.?/}{/};
		1344	redo if s{/[^/]+/\.\./}{/};
		1345	}
		1346
		1347	$path
		1348	}
		1349
		1350	sub new_from_path {
		1351	my (undef, $path, $base) = @_;
		1352
		1353	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1354
		1355	$path = normalise $path, $base;
		1356
		1357	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1358	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1359	my $self = bless cf::map::new, $pkg;
		1360	$self->{path} = $path; $self->path ($path);
		1361	$self->init; # pass $1 etc.
		1362	return $self;
		1363	}
		1364	}
		1365
		1366	Carp::carp "unable to resolve path '$path' (base '$base').";
		1367	()
		1368	}
		1369
		1370	sub init {
582	my ($msg) = @_;	1371	my ($self) = @_;
583		1372
584	$msg->("reloading...");	1373	$self
		1374	}
585		1375
586	eval {	1376	sub as_string {
587	# 1. cancel all watchers	1377	my ($self) = @_;
588	$_->cancel for Event::all_watchers;
589		1378
590	# 2. unload all extensions	1379	"$self->{path}"
591	for (@exts) {	1380	}
592	$msg->("unloading <$_>");
593	unload_extension $_;
594	}
595		1381
596	# 3. unload all modules loaded from $LIBDIR	1382	# the displayed name, this is a one way mapping
597	while (my ($k, $v) = each %INC) {	1383	sub visible_name {
598	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1384	&as_string
		1385	}
599		1386
600	$msg->("removing <$k>");	1387	# the original (read-only) location
601	delete $INC{$k};	1388	sub load_path {
		1389	my ($self) = @_;
602		1390
603	$k =~ s/\.pm$//;	1391	"$MAPDIR/$self->{path}.map"
604	$k =~ s/\//::/g;	1392	}
605		1393
606	if (my $cb = $k->can ("unload_module")) {	1394	# the temporary/swap location
607	$cb->();	1395	sub save_path {
		1396	my ($self) = @_;
		1397
		1398	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1399	"$TMPDIR/$path.map"
		1400	}
		1401
		1402	# the unique path, undef == no special unique path
		1403	sub uniq_path {
		1404	my ($self) = @_;
		1405
		1406	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1407	"$UNIQUEDIR/$path"
		1408	}
		1409
		1410	# and all this just because we cannot iterate over
		1411	# all maps in C++...
		1412	sub change_all_map_light {
		1413	my ($change) = @_;
		1414
		1415	$_->change_map_light ($change)
		1416	for grep $_->outdoor, values %cf::MAP;
		1417	}
		1418
		1419	sub decay_objects {
		1420	my ($self) = @_;
		1421
		1422	return if $self->{deny_reset};
		1423
		1424	$self->do_decay_objects;
		1425	}
		1426
		1427	sub unlink_save {
		1428	my ($self) = @_;
		1429
		1430	utf8::encode (my $save = $self->save_path);
		1431	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1432	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1433	}
		1434
		1435	sub load_header_from($) {
		1436	my ($self, $path) = @_;
		1437
		1438	utf8::encode $path;
		1439	#aio_open $path, O_RDONLY, 0
		1440	# or return;
		1441
		1442	$self->_load_header ($path)
		1443	or return;
		1444
		1445	$self->{load_path} = $path;
		1446
		1447	1
		1448	}
		1449
		1450	sub load_header_orig {
		1451	my ($self) = @_;
		1452
		1453	$self->load_header_from ($self->load_path)
		1454	}
		1455
		1456	sub load_header_temp {
		1457	my ($self) = @_;
		1458
		1459	$self->load_header_from ($self->save_path)
		1460	}
		1461
		1462	sub prepare_temp {
		1463	my ($self) = @_;
		1464
		1465	$self->last_access ((delete $self->{last_access})
		1466	|| $cf::RUNTIME); #d#
		1467	# safety
		1468	$self->{instantiate_time} = $cf::RUNTIME
		1469	if $self->{instantiate_time} > $cf::RUNTIME;
		1470	}
		1471
		1472	sub prepare_orig {
		1473	my ($self) = @_;
		1474
		1475	$self->{load_original} = 1;
		1476	$self->{instantiate_time} = $cf::RUNTIME;
		1477	$self->last_access ($cf::RUNTIME);
		1478	$self->instantiate;
		1479	}
		1480
		1481	sub load_header {
		1482	my ($self) = @_;
		1483
		1484	if ($self->load_header_temp) {
		1485	$self->prepare_temp;
		1486	} else {
		1487	$self->load_header_orig
		1488	or return;
		1489	$self->prepare_orig;
		1490	}
		1491
		1492	$self->{deny_reset} = 1
		1493	if $self->no_reset;
		1494
		1495	$self->default_region (cf::region::find_by_path $self->{path})
		1496	unless $self->default_region;
		1497
		1498	1
		1499	}
		1500
		1501	sub find;
		1502	sub find {
		1503	my ($path, $origin) = @_;
		1504
		1505	$path = normalise $path, $origin && $origin->path;
		1506
		1507	cf::lock_wait "map_find:$path";
		1508
		1509	$cf::MAP{$path} || do {
		1510	my $guard = cf::lock_acquire "map_find:$path";
		1511	my $map = new_from_path cf::map $path
		1512	or return;
		1513
		1514	$map->{last_save} = $cf::RUNTIME;
		1515
		1516	$map->load_header
		1517	or return;
		1518
		1519	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1520	# doing this can freeze the server in a sync job, obviously
		1521	#$cf::WAIT_FOR_TICK->wait;
		1522	$map->reset;
		1523	undef $guard;
		1524	return find $path;
		1525	}
		1526
		1527	$cf::MAP{$path} = $map
		1528	}
		1529	}
		1530
		1531	sub pre_load { }
		1532	sub post_load { }
		1533
		1534	sub load {
		1535	my ($self) = @_;
		1536
		1537	local $self->{deny_reset} = 1; # loading can take a long time
		1538
		1539	my $path = $self->{path};
		1540
		1541	{
		1542	my $guard = cf::lock_acquire "map_load:$path";
		1543
		1544	return if $self->in_memory != cf::MAP_SWAPPED;
		1545
		1546	$self->in_memory (cf::MAP_LOADING);
		1547
		1548	$self->alloc;
		1549
		1550	$self->pre_load;
		1551	Coro::cede;
		1552
		1553	$self->_load_objects ($self->{load_path}, 1)
		1554	or return;
		1555
		1556	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1557	if delete $self->{load_original};
		1558
		1559	if (my $uniq = $self->uniq_path) {
		1560	utf8::encode $uniq;
		1561	if (aio_open $uniq, O_RDONLY, 0) {
		1562	$self->clear_unique_items;
		1563	$self->_load_objects ($uniq, 0);
608	}	1564	}
609
610	Symbol::delete_package $k;
611	}
612
613	# 4. get rid of safe::, as good as possible
614	Symbol::delete_package "safe::$_"
615	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
616
617	# 5. remove register_script_function callbacks
618	# TODO
619		1565	}
620	# 6. unload cf.pm "a bit"
621	delete $INC{"cf.pm"};
622		1566
623	# don't, removes xs symbols, too,	1567	Coro::cede;
624	# and global variables created in xs	1568	# now do the right thing for maps
625	#Symbol::delete_package __PACKAGE__;	1569	$self->link_multipart_objects;
		1570	$self->difficulty ($self->estimate_difficulty)
		1571	unless $self->difficulty;
		1572	Coro::cede;
626		1573
627	# 7. reload cf.pm	1574	unless ($self->{deny_activate}) {
628	$msg->("reloading cf.pm");	1575	$self->decay_objects;
629	require cf;	1576	$self->fix_auto_apply;
		1577	$self->update_buttons;
		1578	Coro::cede;
		1579	$self->set_darkness_map;
		1580	Coro::cede;
		1581	$self->activate;
		1582	}
		1583
		1584	$self->in_memory (cf::MAP_IN_MEMORY);
		1585	}
		1586
		1587	$self->post_load;
		1588	}
		1589
		1590	sub customise_for {
		1591	my ($self, $ob) = @_;
		1592
		1593	return find "~" . $ob->name . "/" . $self->{path}
		1594	if $self->per_player;
		1595
		1596	# return find "?party/" . $ob->name . "/" . $self->{path}
		1597	# if $self->per_party;
		1598
		1599	$self
		1600	}
		1601
		1602	# find and load all maps in the 3x3 area around a map
		1603	sub load_diag {
		1604	my ($map) = @_;
		1605
		1606	my @diag; # diagonal neighbours
		1607
		1608	for (0 .. 3) {
		1609	my $neigh = $map->tile_path ($_)
		1610	or next;
		1611	$neigh = find $neigh, $map
		1612	or next;
		1613	$neigh->load;
		1614
		1615	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1616	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1617	}
		1618
		1619	for (@diag) {
		1620	my $neigh = find @$_
		1621	or next;
		1622	$neigh->load;
		1623	}
		1624	}
		1625
		1626	sub find_sync {
		1627	my ($path, $origin) = @_;
		1628
		1629	cf::sync_job { find $path, $origin }
		1630	}
		1631
		1632	sub do_load_sync {
		1633	my ($map) = @_;
		1634
		1635	cf::sync_job { $map->load };
		1636	}
		1637
		1638	our %MAP_PREFETCH;
		1639	our $MAP_PREFETCHER = undef;
		1640
		1641	sub find_async {
		1642	my ($path, $origin) = @_;
		1643
		1644	$path = normalise $path, $origin && $origin->{path};
		1645
		1646	if (my $map = $cf::MAP{$path}) {
		1647	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1648	}
		1649
		1650	undef $MAP_PREFETCH{$path};
		1651	$MAP_PREFETCHER ||= cf::async {
		1652	while (%MAP_PREFETCH) {
		1653	for my $path (keys %MAP_PREFETCH) {
		1654	my $map = find $path
		1655	or next;
		1656	$map->load;
		1657
		1658	delete $MAP_PREFETCH{$path};
		1659	}
		1660	}
		1661	undef $MAP_PREFETCHER;
630	};	1662	};
631	$msg->($@) if $@;	1663	$MAP_PREFETCHER->prio (6);
632		1664
633	$msg->("reloaded");	1665	()
634	};	1666	}
635		1667
636	sub perl_reload() {	1668	sub save {
637	_perl_reload {	1669	my ($self) = @_;
638	warn $_[0];	1670
639	print "$_[0]\n";	1671	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1672
		1673	$self->{last_save} = $cf::RUNTIME;
		1674
		1675	return unless $self->dirty;
		1676
		1677	my $save = $self->save_path; utf8::encode $save;
		1678	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1679
		1680	$self->{load_path} = $save;
		1681
		1682	return if $self->{deny_save};
		1683
		1684	local $self->{last_access} = $self->last_access;#d#
		1685
		1686	cf::async {
		1687	$_->contr->save for $self->players;
640	};	1688	};
641	}
642		1689
643	register_command "perl-reload", 0, sub {	1690	if ($uniq) {
644	my ($who, $arg) = @_;	1691	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
645		1692	$self->_save_objects ($uniq, cf::IO_UNIQUES);
646	if ($who->flag (FLAG_WIZ)) {
647	_perl_reload {
648	warn $_[0];
649	$who->message ($_[0]);
650	};
651	}
652	};
653
654	#############################################################################
655	# extcmd framework, basically convert ext <msg>
656	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
657
658	attach_to_players
659	on_extcmd => sub {
660	my ($pl, $buf) = @_;
661
662	my $msg = eval { from_json $buf };
663
664	if (ref $msg) {
665	if (my $cb = $extcmd{$msg->{msgtype}}) {
666	if (my %reply = $cb->[0]->($pl, $msg)) {
667	$pl->ext_reply ($msg->{msgid}, %reply);
668	}
669	}
670	} else {	1693	} else {
671	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1694	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
672	}
673
674	cf::override;
675	},	1695	}
676	;	1696	}
677		1697
678	#############################################################################	1698	sub swap_out {
679	# load/save/clean perl data associated with a map
680
681	*cf::mapsupport::on_clean = sub {
682	my ($map) = @_;	1699	my ($self) = @_;
683		1700
684	my $path = $map->tmpname;	1701	# save first because save cedes
685	defined $path or return;	1702	$self->save;
686		1703
687	unlink "$path.pst";	1704	my $lock = cf::lock_acquire "map_data:" . $self->path;
688	};
689		1705
690	# old style persistent data, TODO: remove #d#	1706	return if $self->players;
691	*cf::mapsupport::on_swapin =	1707	return if $self->in_memory != cf::MAP_IN_MEMORY;
692	*cf::mapsupport::on_load = sub {	1708	return if $self->{deny_save};
		1709
		1710	$self->clear;
		1711	$self->in_memory (cf::MAP_SWAPPED);
		1712	}
		1713
		1714	sub reset_at {
693	my ($map) = @_;	1715	my ($self) = @_;
694		1716
695	my $path = $map->tmpname;	1717	# TODO: safety, remove and allow resettable per-player maps
696	$path = $map->path unless defined $path;	1718	return 1e99 if $self->{deny_reset};
697		1719
698	open my $fh, "<:raw", "$path.cfperl"	1720	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
699	or return; # no perl data	1721	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
700		1722
701	my $data = Storable::thaw do { local $/; <$fh> };	1723	$time + $to
702
703	$data->{version} <= 1
704	or return; # too new
705
706	$map->_set_obs ($data->{obs});
707	$map->invoke (EVENT_MAP_UPGRADE);
708	};
709
710	attach_to_maps prio => -10000, package => cf::mapsupport::;
711
712	#############################################################################
713	# load/save perl data associated with player->ob objects
714
715	sub all_objects(@) {
716	@_, map all_objects ($_->inv), @_
717	}	1724	}
718		1725
719	attach_to_players	1726	sub should_reset {
720	on_load => sub {	1727	my ($self) = @_;
721	my ($pl, $path) = @_;
722		1728
723	for my $o (all_objects $pl->ob) {	1729	$self->reset_at <= $cf::RUNTIME
724	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1730	}
725	$o->set_ob_key_value ("_perl_data");
726		1731
727	%$o = %{ Storable::thaw pack "H*", $value };	1732	sub reset {
728	}	1733	my ($self) = @_;
729	}	1734
		1735	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1736
		1737	return if $self->players;
		1738
		1739	warn "resetting map ", $self->path;
		1740
		1741	$self->in_memory (cf::MAP_SWAPPED);
		1742
		1743	# need to save uniques path
		1744	unless ($self->{deny_save}) {
		1745	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1746
		1747	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1748	if $uniq;
730	},	1749	}
731	;
732		1750
733	#############################################################################	1751	delete $cf::MAP{$self->path};
734	# core extensions - in perl
735		1752
736	=item cf::player::exists $login	1753	$self->clear;
737		1754
738	Returns true when the given account exists.	1755	$_->clear_links_to ($self) for values %cf::MAP;
739		1756
740	=cut	1757	$self->unlink_save;
741		1758	$self->destroy;
742	sub cf::player::exists($) {
743	cf::player::find $_[0]
744	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
745	}	1759	}
746		1760
		1761	my $nuke_counter = "aaaa";
		1762
		1763	sub nuke {
		1764	my ($self) = @_;
		1765
		1766	delete $cf::MAP{$self->path};
		1767
		1768	$self->unlink_save;
		1769
		1770	bless $self, "cf::map";
		1771	delete $self->{deny_reset};
		1772	$self->{deny_save} = 1;
		1773	$self->reset_timeout (1);
		1774	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1775
		1776	$cf::MAP{$self->path} = $self;
		1777
		1778	$self->reset; # polite request, might not happen
		1779	}
		1780
		1781	=item cf::map::unique_maps
		1782
		1783	Returns an arrayref of paths of all shared maps that have
		1784	instantiated unique items. May block.
		1785
		1786	=cut
		1787
		1788	sub unique_maps() {
		1789	my $files = aio_readdir $UNIQUEDIR
		1790	or return;
		1791
		1792	my @paths;
		1793
		1794	for (@$files) {
		1795	utf8::decode $_;
		1796	next if /\.pst$/;
		1797	next unless /^$PATH_SEP/o;
		1798
		1799	push @paths, cf::map::normalise $_;
		1800	}
		1801
		1802	\@paths
		1803	}
		1804
		1805	package cf;
		1806
		1807	=back
		1808
		1809	=head3 cf::object
		1810
		1811	=cut
		1812
		1813	package cf::object;
		1814
		1815	=over 4
		1816
		1817	=item $ob->inv_recursive
		1818
		1819	Returns the inventory of the object _and_ their inventories, recursively.
		1820
		1821	=cut
		1822
		1823	sub inv_recursive_;
		1824	sub inv_recursive_ {
		1825	map { $_, inv_recursive_ $_->inv } @_
		1826	}
		1827
		1828	sub inv_recursive {
		1829	inv_recursive_ inv $_[0]
		1830	}
		1831
		1832	package cf;
		1833
		1834	=back
		1835
		1836	=head3 cf::object::player
		1837
		1838	=over 4
		1839
747	=item $player->reply ($npc, $msg[, $flags])	1840	=item $player_object->reply ($npc, $msg[, $flags])
748		1841
749	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1842	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
750	can be C<undef>. Does the right thing when the player is currently in a	1843	can be C<undef>. Does the right thing when the player is currently in a
751	dialogue with the given NPC character.	1844	dialogue with the given NPC character.
752		1845
753	=cut	1846	=cut
754		1847
755	# rough implementation of a future "reply" method that works	1848	# rough implementation of a future "reply" method that works
756	# with dialog boxes.	1849	# with dialog boxes.
		1850	#TODO: the first argument must go, split into a $npc->reply_to ( method
757	sub cf::object::player::reply($$$;$) {	1851	sub cf::object::player::reply($$$;$) {
758	my ($self, $npc, $msg, $flags) = @_;	1852	my ($self, $npc, $msg, $flags) = @_;
759		1853
760	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1854	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
761		1855
…		…
765	$msg = $npc->name . " says: $msg" if $npc;	1859	$msg = $npc->name . " says: $msg" if $npc;
766	$self->message ($msg, $flags);	1860	$self->message ($msg, $flags);
767	}	1861	}
768	}	1862	}
769		1863
770	=item $player->ext_reply ($msgid, $msgtype, %msg)	1864	=item $player_object->may ("access")
771		1865
772	Sends an ext reply to the player.	1866	Returns wether the given player is authorized to access resource "access"
		1867	(e.g. "command_wizcast").
773		1868
774	=cut	1869	=cut
775		1870
776	sub cf::player::ext_reply($$$%) {	1871	sub cf::object::player::may {
		1872	my ($self, $access) = @_;
		1873
		1874	$self->flag (cf::FLAG_WIZ) ||
		1875	(ref $cf::CFG{"may_$access"}
		1876	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1877	: $cf::CFG{"may_$access"})
		1878	}
		1879
		1880	=item $player_object->enter_link
		1881
		1882	Freezes the player and moves him/her to a special map (C<{link}>).
		1883
		1884	The player should be reasonably safe there for short amounts of time. You
		1885	I<MUST> call C<leave_link> as soon as possible, though.
		1886
		1887	Will never block.
		1888
		1889	=item $player_object->leave_link ($map, $x, $y)
		1890
		1891	Moves the player out of the special C<{link}> map onto the specified
		1892	map. If the map is not valid (or omitted), the player will be moved back
		1893	to the location he/she was before the call to C<enter_link>, or, if that
		1894	fails, to the emergency map position.
		1895
		1896	Might block.
		1897
		1898	=cut
		1899
		1900	sub link_map {
		1901	unless ($LINK_MAP) {
		1902	$LINK_MAP = cf::map::find "{link}"
		1903	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1904	$LINK_MAP->load;
		1905	}
		1906
		1907	$LINK_MAP
		1908	}
		1909
		1910	sub cf::object::player::enter_link {
		1911	my ($self) = @_;
		1912
		1913	$self->deactivate_recursive;
		1914
		1915	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1916
		1917	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1918	if $self->map && $self->map->{path} ne "{link}";
		1919
		1920	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1921	}
		1922
		1923	sub cf::object::player::leave_link {
		1924	my ($self, $map, $x, $y) = @_;
		1925
		1926	return unless $self->contr->active;
		1927
		1928	my $link_pos = delete $self->{_link_pos};
		1929
		1930	unless ($map) {
		1931	# restore original map position
		1932	($map, $x, $y) = @{ $link_pos || [] };
		1933	$map = cf::map::find $map;
		1934
		1935	unless ($map) {
		1936	($map, $x, $y) = @$EMERGENCY_POSITION;
		1937	$map = cf::map::find $map
		1938	or die "FATAL: cannot load emergency map\n";
		1939	}
		1940	}
		1941
		1942	($x, $y) = (-1, -1)
		1943	unless (defined $x) && (defined $y);
		1944
		1945	# use -1 or undef as default coordinates, not 0, 0
		1946	($x, $y) = ($map->enter_x, $map->enter_y)
		1947	if $x <=0 && $y <= 0;
		1948
		1949	$map->load;
		1950	$map->load_diag;
		1951
		1952	return unless $self->contr->active;
		1953	$self->activate_recursive;
		1954
		1955	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1956	$self->enter_map ($map, $x, $y);
		1957	}
		1958
		1959	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1960
		1961	Moves the player to the given map-path and coordinates by first freezing
		1962	her, loading and preparing them map, calling the provided $check callback
		1963	that has to return the map if sucecssful, and then unfreezes the player on
		1964	the new (success) or old (failed) map position.
		1965
		1966	=cut
		1967
		1968	our $GOTOGEN;
		1969
		1970	sub cf::object::player::goto {
		1971	my ($self, $path, $x, $y, $check) = @_;
		1972
		1973	# do generation counting so two concurrent goto's will be executed in-order
		1974	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1975
		1976	$self->enter_link;
		1977
		1978	(async {
		1979	my $map = eval {
		1980	my $map = cf::map::find $path;
		1981
		1982	if ($map) {
		1983	$map = $map->customise_for ($self);
		1984	$map = $check->($map) if $check && $map;
		1985	} else {
		1986	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1987	}
		1988
		1989	$map
		1990	};
		1991
		1992	if ($@) {
		1993	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1994	LOG llevError | logBacktrace, Carp::longmess $@;
		1995	}
		1996
		1997	if ($gen == $self->{_goto_generation}) {
		1998	delete $self->{_goto_generation};
		1999	$self->leave_link ($map, $x, $y);
		2000	}
		2001	})->prio (1);
		2002	}
		2003
		2004	=item $player_object->enter_exit ($exit_object)
		2005
		2006	=cut
		2007
		2008	sub parse_random_map_params {
		2009	my ($spec) = @_;
		2010
		2011	my $rmp = { # defaults
		2012	xsize => (cf::rndm 15, 40),
		2013	ysize => (cf::rndm 15, 40),
		2014	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2015	#layout => string,
		2016	};
		2017
		2018	for (split /\n/, $spec) {
		2019	my ($k, $v) = split /\s+/, $_, 2;
		2020
		2021	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2022	}
		2023
		2024	$rmp
		2025	}
		2026
		2027	sub prepare_random_map {
		2028	my ($exit) = @_;
		2029
		2030	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2031
		2032	# all this does is basically replace the /! path by
		2033	# a new random map path (?random/...) with a seed
		2034	# that depends on the exit object
		2035
		2036	my $rmp = parse_random_map_params $exit->msg;
		2037
		2038	if ($exit->map) {
		2039	$rmp->{region} = $exit->region->name;
		2040	$rmp->{origin_map} = $exit->map->path;
		2041	$rmp->{origin_x} = $exit->x;
		2042	$rmp->{origin_y} = $exit->y;
		2043	}
		2044
		2045	$rmp->{random_seed} ||= $exit->random_seed;
		2046
		2047	my $data = cf::to_json $rmp;
		2048	my $md5 = Digest::MD5::md5_hex $data;
		2049	my $meta = "$RANDOMDIR/$md5.meta";
		2050
		2051	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2052	aio_write $fh, 0, (length $data), $data, 0;
		2053	undef $fh;
		2054	aio_rename "$meta~", $meta;
		2055
		2056	$exit->slaying ("?random/$md5");
		2057	$exit->msg (undef);
		2058	}
		2059	}
		2060
		2061	sub cf::object::player::enter_exit {
		2062	my ($self, $exit) = @_;
		2063
		2064	return unless $self->type == cf::PLAYER;
		2065
		2066	if ($exit->slaying eq "/!") {
		2067	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2068	# the problem is that $exit might not survive long enough
		2069	# so it needs to be done right now, right here
		2070	cf::sync_job { prepare_random_map $exit };
		2071	}
		2072
		2073	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2074	my $hp = $exit->stats->hp;
		2075	my $sp = $exit->stats->sp;
		2076
		2077	$self->enter_link;
		2078
		2079	(async {
		2080	$self->deactivate_recursive; # just to be sure
		2081	unless (eval {
		2082	$self->goto ($slaying, $hp, $sp);
		2083
		2084	1;
		2085	}) {
		2086	$self->message ("Something went wrong deep within the crossfire server. "
		2087	. "I'll try to bring you back to the map you were before. "
		2088	. "Please report this to the dungeon master!",
		2089	cf::NDI_UNIQUE | cf::NDI_RED);
		2090
		2091	warn "ERROR in enter_exit: $@";
		2092	$self->leave_link;
		2093	}
		2094	})->prio (1);
		2095	}
		2096
		2097	=head3 cf::client
		2098
		2099	=over 4
		2100
		2101	=item $client->send_drawinfo ($text, $flags)
		2102
		2103	Sends a drawinfo packet to the client. Circumvents output buffering so
		2104	should not be used under normal circumstances.
		2105
		2106	=cut
		2107
		2108	sub cf::client::send_drawinfo {
		2109	my ($self, $text, $flags) = @_;
		2110
		2111	utf8::encode $text;
		2112	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2113	}
		2114
		2115	=item $client->ext_event ($type, %msg)
		2116
		2117	Sends an exti event to the client.
		2118
		2119	=cut
		2120
		2121	sub cf::client::ext_event($$%) {
777	my ($self, $id, %msg) = @_;	2122	my ($self, $type, %msg) = @_;
778		2123
779	$msg{msgid} = $id;	2124	$msg{msgtype} = "event_$type";
780
781	$self->send ("ext " . to_json \%msg);	2125	$self->send_packet ("ext " . cf::to_json \%msg);
782	}	2126	}
783		2127
784	#############################################################################	2128	=item $success = $client->query ($flags, "text", \&cb)
785	# map scripting support	2129
		2130	Queues a query to the client, calling the given callback with
		2131	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2132	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2133
		2134	Queries can fail, so check the return code. Or don't, as queries will become
		2135	reliable at some point in the future.
		2136
		2137	=cut
		2138
		2139	sub cf::client::query {
		2140	my ($self, $flags, $text, $cb) = @_;
		2141
		2142	return unless $self->state == ST_PLAYING
		2143	|| $self->state == ST_SETUP
		2144	|| $self->state == ST_CUSTOM;
		2145
		2146	$self->state (ST_CUSTOM);
		2147
		2148	utf8::encode $text;
		2149	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2150
		2151	$self->send_packet ($self->{query_queue}[0][0])
		2152	if @{ $self->{query_queue} } == 1;
		2153	}
		2154
		2155	cf::client->attach (
		2156	on_reply => sub {
		2157	my ($ns, $msg) = @_;
		2158
		2159	# this weird shuffling is so that direct followup queries
		2160	# get handled first
		2161	my $queue = delete $ns->{query_queue}
		2162	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2163
		2164	(shift @$queue)->[1]->($msg);
		2165	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2166
		2167	push @{ $ns->{query_queue} }, @$queue;
		2168
		2169	if (@{ $ns->{query_queue} } == @$queue) {
		2170	if (@$queue) {
		2171	$ns->send_packet ($ns->{query_queue}[0][0]);
		2172	} else {
		2173	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2174	}
		2175	}
		2176	},
		2177	);
		2178
		2179	=item $client->async (\&cb)
		2180
		2181	Create a new coroutine, running the specified callback. The coroutine will
		2182	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2183	or loss of connection).
		2184
		2185	=cut
		2186
		2187	sub cf::client::async {
		2188	my ($self, $cb) = @_;
		2189
		2190	my $coro = &Coro::async ($cb);
		2191
		2192	$coro->on_destroy (sub {
		2193	delete $self->{_coro}{$coro+0};
		2194	});
		2195
		2196	$self->{_coro}{$coro+0} = $coro;
		2197
		2198	$coro
		2199	}
		2200
		2201	cf::client->attach (
		2202	on_destroy => sub {
		2203	my ($ns) = @_;
		2204
		2205	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2206	},
		2207	);
		2208
		2209	=back
		2210
		2211
		2212	=head2 SAFE SCRIPTING
		2213
		2214	Functions that provide a safe environment to compile and execute
		2215	snippets of perl code without them endangering the safety of the server
		2216	itself. Looping constructs, I/O operators and other built-in functionality
		2217	is not available in the safe scripting environment, and the number of
		2218	functions and methods that can be called is greatly reduced.
		2219
		2220	=cut
786		2221
787	our $safe = new Safe "safe";	2222	our $safe = new Safe "safe";
788	our $safe_hole = new Safe::Hole;	2223	our $safe_hole = new Safe::Hole;
789		2224
790	$SIG{FPE} = 'IGNORE';	2225	$SIG{FPE} = 'IGNORE';
791		2226
792	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2227	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
793		2228
794	# here we export the classes and methods available to script code	2229	# here we export the classes and methods available to script code
795		2230
		2231	=pod
		2232
		2233	The following functions and methods are available within a safe environment:
		2234
		2235	cf::object contr pay_amount pay_player map
		2236	cf::object::player player
		2237	cf::player peaceful
		2238	cf::map trigger
		2239
		2240	=cut
		2241
796	for (	2242	for (
797	["cf::object" => qw(contr pay_amount pay_player)],	2243	["cf::object" => qw(contr pay_amount pay_player map)],
798	["cf::object::player" => qw(player)],	2244	["cf::object::player" => qw(player)],
799	["cf::player" => qw(peaceful)],	2245	["cf::player" => qw(peaceful)],
		2246	["cf::map" => qw(trigger)],
800	) {	2247	) {
801	no strict 'refs';	2248	no strict 'refs';
802	my ($pkg, @funs) = @$_;	2249	my ($pkg, @funs) = @$_;
803	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2250	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
804	for @funs;	2251	for @funs;
805	}	2252	}
		2253
		2254	=over 4
		2255
		2256	=item @retval = safe_eval $code, [var => value, ...]
		2257
		2258	Compiled and executes the given perl code snippet. additional var/value
		2259	pairs result in temporary local (my) scalar variables of the given name
		2260	that are available in the code snippet. Example:
		2261
		2262	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2263
		2264	=cut
806		2265
807	sub safe_eval($;@) {	2266	sub safe_eval($;@) {
808	my ($code, %vars) = @_;	2267	my ($code, %vars) = @_;
809		2268
810	my $qcode = $code;	2269	my $qcode = $code;
…		…
833	}	2292	}
834		2293
835	wantarray ? @res : $res[0]	2294	wantarray ? @res : $res[0]
836	}	2295	}
837		2296
		2297	=item cf::register_script_function $function => $cb
		2298
		2299	Register a function that can be called from within map/npc scripts. The
		2300	function should be reasonably secure and should be put into a package name
		2301	like the extension.
		2302
		2303	Example: register a function that gets called whenever a map script calls
		2304	C<rent::overview>, as used by the C<rent> extension.
		2305
		2306	cf::register_script_function "rent::overview" => sub {
		2307	...
		2308	};
		2309
		2310	=cut
		2311
838	sub register_script_function {	2312	sub register_script_function {
839	my ($fun, $cb) = @_;	2313	my ($fun, $cb) = @_;
840		2314
841	no strict 'refs';	2315	no strict 'refs';
842	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2316	*{"safe::$fun"} = $safe_hole->wrap ($cb);
843	}	2317	}
844		2318
		2319	=back
		2320
		2321	=cut
		2322
845	#############################################################################	2323	#############################################################################
846	# the server's main()	2324
		2325	=head2 EXTENSION DATABASE SUPPORT
		2326
		2327	Crossfire maintains a very simple database for extension use. It can
		2328	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
		2329	convert to/from binary).
		2330
		2331	The parameter C<$family> should best start with the name of the extension
		2332	using it, it should be unique.
		2333
		2334	=over 4
		2335
		2336	=item $value = cf::db_get $family => $key
		2337
		2338	Returns a single value from the database.
		2339
		2340	=item cf::db_put $family => $key => $value
		2341
		2342	Stores the given C<$value> in the family.
		2343
		2344	=cut
		2345
		2346	our $DB;
		2347
		2348	sub db_init {
		2349	unless ($DB) {
		2350	$DB = BDB::db_create $DB_ENV;
		2351
		2352	cf::sync_job {
		2353	eval {
		2354	$DB->set_flags (BDB::CHKSUM);
		2355
		2356	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2357	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2358	cf::cleanup "db_open(db): $!" if $!;
		2359	};
		2360	cf::cleanup "db_open(db): $@" if $@;
		2361	};
		2362	}
		2363	}
		2364
		2365	sub db_get($$) {
		2366	my $key = "$_[0]/$_[1]";
		2367
		2368	cf::sync_job {
		2369	BDB::db_get $DB, undef, $key, my $data;
		2370
		2371	$! ? ()
		2372	: $data
		2373	}
		2374	}
		2375
		2376	sub db_put($$$) {
		2377	BDB::dbreq_pri 4;
		2378	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		2379	}
		2380
		2381	=item cf::cache $id => [$paths...], $processversion => $process
		2382
		2383	Generic caching function that returns the value of the resource $id,
		2384	caching and regenerating as required.
		2385
		2386	This function can block.
		2387
		2388	=cut
		2389
		2390	sub cache {
		2391	my ($id, $src, $processversion, $process) = @_;
		2392
		2393	my $meta =
		2394	join "\x00",
		2395	$processversion,
		2396	map {
		2397	aio_stat $_
		2398	and Carp::croak "$_: $!";
		2399
		2400	($_, (stat _)[7,9])
		2401	} @$src;
		2402
		2403	my $dbmeta = db_get cache => "$id/meta";
		2404	if ($dbmeta ne $meta) {
		2405	# changed, we may need to process
		2406
		2407	my @data;
		2408	my $md5;
		2409
		2410	for (0 .. $#$src) {
		2411	0 <= aio_load $src->[$_], $data[$_]
		2412	or Carp::croak "$src->[$_]: $!";
		2413	}
		2414
		2415	# if processing is expensive, check
		2416	# checksum first
		2417	if (1) {
		2418	$md5 =
		2419	join "\x00",
		2420	$processversion,
		2421	map {
		2422	Coro::cede;
		2423	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2424	} 0.. $#$src;
		2425
		2426
		2427	my $dbmd5 = db_get cache => "$id/md5";
		2428	if ($dbmd5 eq $md5) {
		2429	db_put cache => "$id/meta", $meta;
		2430
		2431	return db_get cache => "$id/data";
		2432	}
		2433	}
		2434
		2435	my $t1 = Time::HiRes::time;
		2436	my $data = $process->(\@data);
		2437	my $t2 = Time::HiRes::time;
		2438
		2439	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2440
		2441	db_put cache => "$id/data", $data;
		2442	db_put cache => "$id/md5" , $md5;
		2443	db_put cache => "$id/meta", $meta;
		2444
		2445	return $data;
		2446	}
		2447
		2448	db_get cache => "$id/data"
		2449	}
		2450
		2451	=item fork_call { }, $args
		2452
		2453	Executes the given code block with the given arguments in a seperate
		2454	process, returning the results. Everything must be serialisable with
		2455	Coro::Storable. May, of course, block. Note that the executed sub may
		2456	never block itself or use any form of Event handling.
		2457
		2458	=cut
		2459
		2460	sub fork_call(&@) {
		2461	my ($cb, @args) = @_;
		2462
		2463	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2464	# or die "socketpair: $!";
		2465	pipe my $fh1, my $fh2
		2466	or die "pipe: $!";
		2467
		2468	if (my $pid = fork) {
		2469	close $fh2;
		2470
		2471	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2472	$res = Coro::Storable::thaw $res;
		2473
		2474	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2475
		2476	die $$res unless "ARRAY" eq ref $res;
		2477
		2478	return wantarray ? @$res : $res->[-1];
		2479	} else {
		2480	reset_signals;
		2481	local $SIG{__WARN__};
		2482	local $SIG{__DIE__};
		2483	eval {
		2484	close $fh1;
		2485
		2486	my @res = eval { $cb->(@args) };
		2487	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2488	};
		2489
		2490	warn $@ if $@;
		2491	_exit 0;
		2492	}
		2493	}
		2494
		2495	#############################################################################
		2496	# the server's init and main functions
		2497
		2498	sub load_facedata($) {
		2499	my ($path) = @_;
		2500
		2501	warn "loading facedata from $path\n";
		2502
		2503	my $facedata;
		2504	0 < aio_load $path, $facedata
		2505	or die "$path: $!";
		2506
		2507	$facedata = Coro::Storable::thaw $facedata;
		2508
		2509	$facedata->{version} == 2
		2510	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2511
		2512	{
		2513	my $faces = $facedata->{faceinfo};
		2514
		2515	while (my ($face, $info) = each %$faces) {
		2516	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2517	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2518	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2519	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2520	Coro::cede;
		2521	}
		2522
		2523	while (my ($face, $info) = each %$faces) {
		2524	next unless $info->{smooth};
		2525	my $idx = cf::face::find $face
		2526	or next;
		2527	if (my $smooth = cf::face::find $info->{smooth}) {
		2528	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2529	} else {
		2530	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2531	}
		2532	Coro::cede;
		2533	}
		2534	}
		2535
		2536	{
		2537	my $anims = $facedata->{animinfo};
		2538
		2539	while (my ($anim, $info) = each %$anims) {
		2540	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2541	Coro::cede;
		2542	}
		2543
		2544	cf::anim::invalidate_all; # d'oh
		2545	}
		2546
		2547	1
		2548	}
		2549
		2550	sub reload_regions {
		2551	load_resource_file "$MAPDIR/regions"
		2552	or die "unable to load regions file\n";
		2553	}
		2554
		2555	sub reload_facedata {
		2556	load_facedata "$DATADIR/facedata"
		2557	or die "unable to load facedata\n";
		2558	}
		2559
		2560	sub reload_archetypes {
		2561	load_resource_file "$DATADIR/archetypes"
		2562	or die "unable to load archetypes\n";
		2563	}
		2564
		2565	sub reload_treasures {
		2566	load_resource_file "$DATADIR/treasures"
		2567	or die "unable to load treasurelists\n";
		2568	}
		2569
		2570	sub reload_resources {
		2571	warn "reloading resource files...\n";
		2572
		2573	reload_regions;
		2574	reload_facedata;
		2575	#reload_archetypes;#d#
		2576	reload_archetypes;
		2577	reload_treasures;
		2578
		2579	warn "finished reloading resource files\n";
		2580	}
		2581
		2582	sub init {
		2583	reload_resources;
		2584	}
		2585
		2586	sub cfg_load {
		2587	open my $fh, "<:utf8", "$CONFDIR/config"
		2588	or return;
		2589
		2590	local $/;
		2591	*CFG = YAML::Syck::Load <$fh>;
		2592
		2593	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2594
		2595	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2596	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2597
		2598	if (exists $CFG{mlockall}) {
		2599	eval {
		2600	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2601	and die "WARNING: m(un)lockall failed: $!\n";
		2602	};
		2603	warn $@ if $@;
		2604	}
		2605	}
847		2606
848	sub main {	2607	sub main {
		2608	# we must not ever block the main coroutine
		2609	local $Coro::idle = sub {
		2610	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2611	(async {
		2612	Event::one_event;
		2613	})->prio (Coro::PRIO_MAX);
		2614	};
		2615
		2616	cfg_load;
		2617	db_init;
		2618	load_extensions;
		2619
		2620	$TICK_WATCHER->start;
849	Event::loop;	2621	Event::loop;
850	}	2622	}
851		2623
852	#############################################################################	2624	#############################################################################
853	# initialisation	2625	# initialisation and cleanup
854		2626
855	register "<global>", __PACKAGE__;	2627	# install some emergency cleanup handlers
		2628	BEGIN {
		2629	for my $signal (qw(INT HUP TERM)) {
		2630	Event->signal (
		2631	reentrant => 0,
		2632	data => WF_AUTOCANCEL,
		2633	signal => $signal,
		2634	prio => 0,
		2635	cb => sub {
		2636	cf::cleanup "SIG$signal";
		2637	},
		2638	);
		2639	}
		2640	}
		2641
		2642	sub emergency_save() {
		2643	my $freeze_guard = cf::freeze_mainloop;
		2644
		2645	warn "enter emergency perl save\n";
		2646
		2647	cf::sync_job {
		2648	# use a peculiar iteration method to avoid tripping on perl
		2649	# refcount bugs in for. also avoids problems with players
		2650	# and maps saved/destroyed asynchronously.
		2651	warn "begin emergency player save\n";
		2652	for my $login (keys %cf::PLAYER) {
		2653	my $pl = $cf::PLAYER{$login} or next;
		2654	$pl->valid or next;
		2655	$pl->save;
		2656	}
		2657	warn "end emergency player save\n";
		2658
		2659	warn "begin emergency map save\n";
		2660	for my $path (keys %cf::MAP) {
		2661	my $map = $cf::MAP{$path} or next;
		2662	$map->valid or next;
		2663	$map->save;
		2664	}
		2665	warn "end emergency map save\n";
		2666
		2667	warn "begin emergency database checkpoint\n";
		2668	BDB::db_env_txn_checkpoint $DB_ENV;
		2669	warn "end emergency database checkpoint\n";
		2670	};
		2671
		2672	warn "leave emergency perl save\n";
		2673	}
		2674
		2675	sub post_cleanup {
		2676	my ($make_core) = @_;
		2677
		2678	warn Carp::longmess "post_cleanup backtrace"
		2679	if $make_core;
		2680	}
		2681
		2682	sub do_reload_perl() {
		2683	# can/must only be called in main
		2684	if ($Coro::current != $Coro::main) {
		2685	warn "can only reload from main coroutine";
		2686	return;
		2687	}
		2688
		2689	warn "reloading...";
		2690
		2691	warn "entering sync_job";
		2692
		2693	cf::sync_job {
		2694	cf::write_runtime; # external watchdog should not bark
		2695	cf::emergency_save;
		2696	cf::write_runtime; # external watchdog should not bark
		2697
		2698	warn "syncing database to disk";
		2699	BDB::db_env_txn_checkpoint $DB_ENV;
		2700
		2701	# if anything goes wrong in here, we should simply crash as we already saved
		2702
		2703	warn "cancelling all WF_AUTOCANCEL watchers";
		2704	for (Event::all_watchers) {
		2705	$_->cancel if $_->data & WF_AUTOCANCEL;
		2706	}
		2707
		2708	warn "flushing outstanding aio requests";
		2709	for (;;) {
		2710	BDB::flush;
		2711	IO::AIO::flush;
		2712	Coro::cede;
		2713	last unless IO::AIO::nreqs || BDB::nreqs;
		2714	warn "iterate...";
		2715	}
		2716
		2717	++$RELOAD;
		2718
		2719	warn "cancelling all extension coros";
		2720	$_->cancel for values %EXT_CORO;
		2721	%EXT_CORO = ();
		2722
		2723	warn "removing commands";
		2724	%COMMAND = ();
		2725
		2726	warn "removing ext commands";
		2727	%EXTCMD = ();
		2728
		2729	warn "unloading/nuking all extensions";
		2730	for my $pkg (@EXTS) {
		2731	warn "... unloading $pkg";
		2732
		2733	if (my $cb = $pkg->can ("unload")) {
		2734	eval {
		2735	$cb->($pkg);
		2736	1
		2737	} or warn "$pkg unloaded, but with errors: $@";
		2738	}
		2739
		2740	warn "... nuking $pkg";
		2741	Symbol::delete_package $pkg;
		2742	}
		2743
		2744	warn "unloading all perl modules loaded from $LIBDIR";
		2745	while (my ($k, $v) = each %INC) {
		2746	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2747
		2748	warn "... unloading $k";
		2749	delete $INC{$k};
		2750
		2751	$k =~ s/\.pm$//;
		2752	$k =~ s/\//::/g;
		2753
		2754	if (my $cb = $k->can ("unload_module")) {
		2755	$cb->();
		2756	}
		2757
		2758	Symbol::delete_package $k;
		2759	}
		2760
		2761	warn "getting rid of safe::, as good as possible";
		2762	Symbol::delete_package "safe::$_"
		2763	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2764
		2765	warn "unloading cf.pm \"a bit\"";
		2766	delete $INC{"cf.pm"};
		2767	delete $INC{"cf/pod.pm"};
		2768
		2769	# don't, removes xs symbols, too,
		2770	# and global variables created in xs
		2771	#Symbol::delete_package __PACKAGE__;
		2772
		2773	warn "unload completed, starting to reload now";
		2774
		2775	warn "reloading cf.pm";
		2776	require cf;
		2777	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2778
		2779	warn "loading config and database again";
		2780	cf::cfg_load;
		2781
		2782	warn "loading extensions";
		2783	cf::load_extensions;
		2784
		2785	warn "reattaching attachments to objects/players";
		2786	_global_reattach; # objects, sockets
		2787	warn "reattaching attachments to maps";
		2788	reattach $_ for values %MAP;
		2789	warn "reattaching attachments to players";
		2790	reattach $_ for values %PLAYER;
		2791
		2792	warn "leaving sync_job";
		2793
		2794	1
		2795	} or do {
		2796	warn $@;
		2797	warn "error while reloading, exiting.";
		2798	exit 1;
		2799	};
		2800
		2801	warn "reloaded";
		2802	};
		2803
		2804	our $RELOAD_WATCHER; # used only during reload
		2805
		2806	sub reload_perl() {
		2807	# doing reload synchronously and two reloads happen back-to-back,
		2808	# coro crashes during coro_state_free->destroy here.
		2809
		2810	$RELOAD_WATCHER ||= Event->timer (
		2811	reentrant => 0,
		2812	after => 0,
		2813	data => WF_AUTOCANCEL,
		2814	cb => sub {
		2815	do_reload_perl;
		2816	undef $RELOAD_WATCHER;
		2817	},
		2818	);
		2819	}
		2820
		2821	register_command "reload" => sub {
		2822	my ($who, $arg) = @_;
		2823
		2824	if ($who->flag (FLAG_WIZ)) {
		2825	$who->message ("reloading server.");
		2826	async { reload_perl };
		2827	}
		2828	};
856		2829
857	unshift @INC, $LIBDIR;	2830	unshift @INC, $LIBDIR;
858		2831
859	load_extensions;	2832	my $bug_warning = 0;
860		2833
		2834	our @WAIT_FOR_TICK;
		2835	our @WAIT_FOR_TICK_BEGIN;
		2836
		2837	sub wait_for_tick {
		2838	return unless $TICK_WATCHER->is_active;
		2839	return if $Coro::current == $Coro::main;
		2840
		2841	my $signal = new Coro::Signal;
		2842	push @WAIT_FOR_TICK, $signal;
		2843	$signal->wait;
		2844	}
		2845
		2846	sub wait_for_tick_begin {
		2847	return unless $TICK_WATCHER->is_active;
		2848	return if $Coro::current == $Coro::main;
		2849
		2850	my $signal = new Coro::Signal;
		2851	push @WAIT_FOR_TICK_BEGIN, $signal;
		2852	$signal->wait;
		2853	}
		2854
		2855	my $min = 1e6;#d#
		2856	my $avg = 10;
861	$TICK_WATCHER = Event->timer (	2857	$TICK_WATCHER = Event->timer (
		2858	reentrant => 0,
		2859	parked => 1,
862	prio => 1,	2860	prio => 0,
863	at => $NEXT_TICK || 1,	2861	at => $NEXT_TICK || $TICK,
		2862	data => WF_AUTOCANCEL,
864	cb => sub {	2863	cb => sub {
		2864	if ($Coro::current != $Coro::main) {
		2865	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2866	unless ++$bug_warning > 10;
		2867	return;
		2868	}
		2869
		2870	$NOW = $tick_start = Event::time;
		2871
865	cf::server_tick; # one server iteration	2872	cf::server_tick; # one server iteration
866		2873
		2874	0 && sync_job {#d#
		2875	for(1..10) {
867	my $NOW = Event::time;	2876	my $t = Event::time;
		2877	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2878	or die;
		2879
		2880	$map->width (50);
		2881	$map->height (50);
		2882	$map->alloc;
		2883	$map->_load_objects ("/tmp/x.map", 1);
		2884	my $t = Event::time - $t;
		2885
		2886	#next unless $t < 0.0013;#d#
		2887	if ($t < $min) {
		2888	$min = $t;
		2889	}
		2890	$avg = $avg * 0.99 + $t * 0.01;
		2891	}
		2892	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2893	exit 0;
		2894	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2895	};
		2896
		2897	$RUNTIME += $TICK;
868	$NEXT_TICK += $TICK;	2898	$NEXT_TICK += $TICK;
869		2899
		2900	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2901	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2902	Coro::async_pool {
		2903	write_runtime
		2904	or warn "ERROR: unable to write runtime file: $!";
		2905	};
		2906	}
		2907
		2908	# my $AFTER = Event::time;
		2909	# warn $AFTER - $NOW;#d#
		2910
		2911	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2912	$sig->send;
		2913	}
		2914	while (my $sig = shift @WAIT_FOR_TICK) {
		2915	$sig->send;
		2916	}
		2917
		2918	$NOW = Event::time;
		2919
870	# if we are delayed by four ticks, skip them all	2920	# if we are delayed by four ticks or more, skip them all
871	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2921	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
872		2922
873	$TICK_WATCHER->at ($NEXT_TICK);	2923	$TICK_WATCHER->at ($NEXT_TICK);
874	$TICK_WATCHER->start;	2924	$TICK_WATCHER->start;
		2925
		2926	$LOAD = ($NOW - $tick_start) / $TICK;
		2927	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2928
		2929	_post_tick;
		2930
		2931
875	},	2932	},
876	);	2933	);
877		2934
878	_reload_2;	2935	{
		2936	BDB::max_poll_time $TICK * 0.1;
		2937	$BDB_POLL_WATCHER = Event->io (
		2938	reentrant => 0,
		2939	fd => BDB::poll_fileno,
		2940	poll => 'r',
		2941	prio => 0,
		2942	data => WF_AUTOCANCEL,
		2943	cb => \&BDB::poll_cb,
		2944	);
		2945	BDB::min_parallel 8;
		2946
		2947	BDB::set_sync_prepare {
		2948	my $status;
		2949	my $current = $Coro::current;
		2950	(
		2951	sub {
		2952	$status = $!;
		2953	$current->ready; undef $current;
		2954	},
		2955	sub {
		2956	Coro::schedule while defined $current;
		2957	$! = $status;
		2958	},
		2959	)
		2960	};
		2961
		2962	unless ($DB_ENV) {
		2963	$DB_ENV = BDB::db_env_create;
		2964
		2965	cf::sync_job {
		2966	eval {
		2967	BDB::db_env_open
		2968	$DB_ENV,
		2969	$BDBDIR,
		2970	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2971	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2972	0666;
		2973
		2974	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2975
		2976	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2977	$DB_ENV->set_lk_detect;
		2978	};
		2979
		2980	cf::cleanup "db_env_open(db): $@" if $@;
		2981	};
		2982	}
		2983	}
		2984
		2985	{
		2986	IO::AIO::min_parallel 8;
		2987
		2988	undef $Coro::AIO::WATCHER;
		2989	IO::AIO::max_poll_time $TICK * 0.1;
		2990	$AIO_POLL_WATCHER = Event->io (
		2991	reentrant => 0,
		2992	data => WF_AUTOCANCEL,
		2993	fd => IO::AIO::poll_fileno,
		2994	poll => 'r',
		2995	prio => 6,
		2996	cb => \&IO::AIO::poll_cb,
		2997	);
		2998	}
		2999
		3000	my $_log_backtrace;
		3001
		3002	sub _log_backtrace {
		3003	my ($msg, @addr) = @_;
		3004
		3005	$msg =~ s/\n//;
		3006
		3007	# limit the # of concurrent backtraces
		3008	if ($_log_backtrace < 2) {
		3009	++$_log_backtrace;
		3010	async {
		3011	my @bt = fork_call {
		3012	@addr = map { sprintf "%x", $_ } @addr;
		3013	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3014	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3015	or die "addr2line: $!";
		3016
		3017	my @funcs;
		3018	my @res = <$fh>;
		3019	chomp for @res;
		3020	while (@res) {
		3021	my ($func, $line) = splice @res, 0, 2, ();
		3022	push @funcs, "[$func] $line";
		3023	}
		3024
		3025	@funcs
		3026	};
		3027
		3028	LOG llevInfo, "[ABT] $msg\n";
		3029	LOG llevInfo, "[ABT] $_\n" for @bt;
		3030	--$_log_backtrace;
		3031	};
		3032	} else {
		3033	LOG llevInfo, "[ABT] $msg\n";
		3034	LOG llevInfo, "[ABT] [suppressed]\n";
		3035	}
		3036	}
		3037
		3038	# load additional modules
		3039	use cf::pod;
		3040
		3041	END { cf::emergency_save }
879		3042
880	1	3043	1
881		3044

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