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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.50 by root, Mon Aug 28 07:07:42 2006 UTC vs.
Revision 1.246 by root, Tue Apr 17 10:38:28 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
		9	use Event;
6	use Opcode;	10	use Opcode;
7	use Safe;	11	use Safe;
8	use Safe::Hole;	12	use Safe::Hole;
9		13
		14	use Coro 3.61 ();
		15	use Coro::State;
		16	use Coro::Event;
		17	use Coro::Timer;
		18	use Coro::Signal;
		19	use Coro::Semaphore;
		20	use Coro::AIO;
		21	use Coro::Storable;
		22
		23	use BDB ();
		24	use Data::Dumper;
		25	use Digest::MD5;
		26	use Fcntl;
		27	use YAML::Syck ();
		28	use IO::AIO 2.32 ();
10	use Time::HiRes;	29	use Time::HiRes;
11	use Event;	30	use Compress::LZF;
		31
		32	# configure various modules to our taste
		33	#
		34	$Storable::canonical = 1; # reduce rsync transfers
		35	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		36	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		37
12	$Event::Eval = 1; # no idea why this is required, but it is	38	$Event::Eval = 1; # no idea why this is required, but it is
13		39
14	use strict;	40	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		41	$YAML::Syck::ImplicitUnicode = 1;
15		42
16	_reload_1;	43	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		44
		45	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		46
18	our %COMMAND = ();	47	our %COMMAND = ();
		48	our %COMMAND_TIME = ();
		49
		50	our @EXTS = (); # list of extension package names
		51	our %EXTCMD = ();
		52	our %EXT_CORO = (); # coroutines bound to extensions
		53	our %EXT_MAP = (); # pluggable maps
		54
		55	our $RELOAD; # number of reloads so far
19	our @EVENT;	56	our @EVENT;
20	our %PROP_TYPE;	57	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		58
24	our $TICK = MAX_TIME * 1e-6;	59	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
25	our $TICK_WATCHER;	60	our $TICK_WATCHER;
		61	our $AIO_POLL_WATCHER;
		62	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	63	our $NEXT_TICK;
		64	our $NOW;
		65	our $USE_FSYNC = 1; # use fsync to write maps - default off
		66
		67	our $BDB_POLL_WATCHER;
		68	our $DB_ENV;
		69
		70	our %CFG;
		71
		72	our $UPTIME; $UPTIME ||= time;
		73	our $RUNTIME;
		74
		75	our %PLAYER; # all users
		76	our %MAP; # all maps
		77	our $LINK_MAP; # the special {link} map, which is always available
		78	our $RANDOM_MAPS = cf::localdir . "/random";
		79	our $BDB_ENV_DIR = cf::localdir . "/db";
		80
		81	# used to convert map paths into valid unix filenames by replacing / by ∕
		82	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		83
		84	binmode STDOUT;
		85	binmode STDERR;
		86
		87	# read virtual server time, if available
		88	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		89	open my $fh, "<", cf::localdir . "/runtime"
		90	or die "unable to read runtime file: $!";
		91	$RUNTIME = <$fh> + 0.;
		92	}
		93
		94	mkdir cf::localdir;
		95	mkdir cf::localdir . "/" . cf::playerdir;
		96	mkdir cf::localdir . "/" . cf::tmpdir;
		97	mkdir cf::localdir . "/" . cf::uniquedir;
		98	mkdir $RANDOM_MAPS;
		99	mkdir $BDB_ENV_DIR;
		100
		101	our $EMERGENCY_POSITION;
		102
		103	sub cf::map::normalise;
		104
		105	#############################################################################
		106
		107	=head2 GLOBAL VARIABLES
		108
		109	=over 4
		110
		111	=item $cf::UPTIME
		112
		113	The timestamp of the server start (so not actually an uptime).
		114
		115	=item $cf::RUNTIME
		116
		117	The time this server has run, starts at 0 and is increased by $cf::TICK on
		118	every server tick.
		119
		120	=item $cf::LIBDIR
		121
		122	The perl library directory, where extensions and cf-specific modules can
		123	be found. It will be added to C<@INC> automatically.
		124
		125	=item $cf::NOW
		126
		127	The time of the last (current) server tick.
		128
		129	=item $cf::TICK
		130
		131	The interval between server ticks, in seconds.
		132
		133	=item %cf::CFG
		134
		135	Configuration for the server, loaded from C</etc/crossfire/config>, or
		136	from wherever your confdir points to.
		137
		138	=item cf::wait_for_tick, cf::wait_for_tick_begin
		139
		140	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		141	returns directly I<after> the tick processing (and consequently, can only wake one process
		142	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		143
		144	=back
		145
		146	=cut
27		147
28	BEGIN {	148	BEGIN {
29	*CORE::GLOBAL::warn = sub {	149	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	150	my $msg = join "", @_;
		151	utf8::encode $msg;
		152
31	$msg .= "\n"	153	$msg .= "\n"
32	unless $msg =~ /\n$/;	154	unless $msg =~ /\n$/;
33		155
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	156	LOG llevError, $msg;
36	};	157	};
37	}	158	}
38		159
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	160	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		161	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	162	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	163	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	164	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	165	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		166
75	# we bless all objects into (empty) derived classes to force a method lookup	167	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	168	# 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)) {	169	for my $pkg (qw(
		170	cf::global cf::attachable
		171	cf::object cf::object::player
		172	cf::client cf::player
		173	cf::arch cf::living
		174	cf::map cf::party cf::region
		175	)) {
78	no strict 'refs';	176	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	177	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	178	}
81		179
82	$Event::DIED = sub {	180	$Event::DIED = sub {
83	warn "error in event callback: @_";	181	warn "error in event callback: @_";
84	};	182	};
85		183
86	my %ext_pkg;	184	=head2 UTILITY FUNCTIONS
87	my @exts;	185
88	my @hook;	186	=over 4
89	my %command;	187
90	my %extcmd;	188	=item dumpval $ref
		189
		190	=cut
		191
		192	sub dumpval {
		193	eval {
		194	local $SIG{__DIE__};
		195	my $d;
		196	if (1) {
		197	$d = new Data::Dumper([$_[0]], ["*var"]);
		198	$d->Terse(1);
		199	$d->Indent(2);
		200	$d->Quotekeys(0);
		201	$d->Useqq(1);
		202	#$d->Bless(...);
		203	$d->Seen($_[1]) if @_ > 1;
		204	$d = $d->Dump();
		205	}
		206	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		207	$d
		208	} || "[unable to dump $_[0]: '$@']";
		209	}
		210
		211	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
		212
		213	=item $ref = cf::from_json $json
		214
		215	Converts a JSON string into the corresponding perl data structure.
		216
		217	=item $json = cf::to_json $ref
		218
		219	Converts a perl data structure into its JSON representation.
		220
		221	=item cf::lock_wait $string
		222
		223	Wait until the given lock is available. See cf::lock_acquire.
		224
		225	=item my $lock = cf::lock_acquire $string
		226
		227	Wait until the given lock is available and then acquires it and returns
		228	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		229	for example when the coroutine gets canceled), the lock is automatically
		230	returned.
		231
		232	Lock names should begin with a unique identifier (for example, cf::map::find
		233	uses map_find and cf::map::load uses map_load).
		234
		235	=cut
		236
		237	our %LOCK;
		238
		239	sub lock_wait($) {
		240	my ($key) = @_;
		241
		242	# wait for lock, if any
		243	while ($LOCK{$key}) {
		244	push @{ $LOCK{$key} }, $Coro::current;
		245	Coro::schedule;
		246	}
		247	}
		248
		249	sub lock_acquire($) {
		250	my ($key) = @_;
		251
		252	# wait, to be sure we are not locked
		253	lock_wait $key;
		254
		255	$LOCK{$key} = [];
		256
		257	Coro::guard {
		258	# wake up all waiters, to be on the safe side
		259	$_->ready for @{ delete $LOCK{$key} };
		260	}
		261	}
		262
		263	sub freeze_mainloop {
		264	return unless $TICK_WATCHER->is_active;
		265
		266	my $guard = Coro::guard {
		267	$TICK_WATCHER->start;
		268	};
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $guard = cf::lock_acquire "write_runtime";
		350
		351	my $runtime = cf::localdir . "/runtime";
		352
		353	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		354	or return;
		355
		356	my $value = $cf::RUNTIME + 90 + 10;
		357	# 10 is the runtime save interval, for a monotonic clock
		358	# 60 allows for the watchdog to kill the server.
		359
		360	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		361	and return;
		362
		363	# always fsync - this file is important
		364	aio_fsync $fh
		365	and return;
		366
		367	close $fh
		368	or return;
		369
		370	aio_rename "$runtime~", $runtime
		371	and return;
		372
		373	1
		374	}
		375
		376	=item cf::datalog type => key => value, ...
		377
		378	Log a datalog packet of the given type with the given key-value pairs.
		379
		380	=cut
		381
		382	sub datalog($@) {
		383	my ($type, %kv) = @_;
		384	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		385	}
		386
		387	=back
		388
		389	=cut
91		390
92	#############################################################################	391	#############################################################################
93	# utility functions
94		392
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	393	=head2 ATTACHABLE OBJECTS
96		394
97	sub from_json($) {	395	Many objects in crossfire are so-called attachable objects. That means you can
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	396	attach callbacks/event handlers (a collection of which is called an "attachment")
99	JSON::Syck::Load $_[0]	397	to it. All such attachable objects support the following methods.
100	}
101		398
102	sub to_json($) {	399	In the following description, CLASS can be any of C<global>, C<object>
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	400	C<player>, C<client> or C<map> (i.e. the attachable objects in
104	JSON::Syck::Dump $_[0]	401	crossfire+).
105	}
106		402
107	#############################################################################	403	=over 4
108	# "new" plug-in system
109		404
110	=item $object->attach ($attachment, key => $value...)	405	=item $attachable->attach ($attachment, key => $value...)
111		406
112	Attach a pre-registered attachment to an object.	407	=item $attachable->detach ($attachment)
113		408
114	=item $player->attach ($attachment, key => $value...)	409	Attach/detach a pre-registered attachment to a specific object and give it
		410	the specified key/value pairs as arguments.
115		411
116	Attach a pre-registered attachment to a player.	412	Example, attach a minesweeper attachment to the given object, making it a
		413	10x10 minesweeper game:
117		414
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	415	$obj->attach (minesweeper => width => 10, height => 10);
119		416
120	Attach a pre-registered attachment to a map.	417	=item $bool = $attachable->attached ($name)
121		418
122	=item cf::attach_global ...	419	Checks wether the named attachment is currently attached to the object.
123		420
124	Attach handlers for global events.	421	=item cf::CLASS->attach ...
125		422
126	This and all following C<attach_*>-functions expect any number of the	423	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	424
		425	Define an anonymous attachment and attach it to all objects of the given
		426	CLASS. See the next function for an explanation of its arguments.
		427
		428	You can attach to global events by using the C<cf::global> class.
		429
		430	Example, log all player logins:
		431
		432	cf::player->attach (
		433	on_login => sub {
		434	my ($pl) = @_;
		435	...
		436	},
		437	);
		438
		439	Example, attach to the jeweler skill:
		440
		441	cf::object->attach (
		442	type => cf::SKILL,
		443	subtype => cf::SK_JEWELER,
		444	on_use_skill => sub {
		445	my ($sk, $ob, $part, $dir, $msg) = @_;
		446	...
		447	},
		448	);
		449
		450	=item cf::CLASS::attachment $name, ...
		451
		452	Register an attachment by C<$name> through which attachable objects of the
		453	given CLASS can refer to this attachment.
		454
		455	Some classes such as crossfire maps and objects can specify attachments
		456	that are attached at load/instantiate time, thus the need for a name.
		457
		458	These calls expect any number of the following handler/hook descriptions:
128		459
129	=over 4	460	=over 4
130		461
131	=item prio => $number	462	=item prio => $number
132		463
…		…
134	by another C<prio> setting). Lower priority handlers get executed	465	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	466	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	467	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	468	unless you know what you are doing.
138		469
		470	=item type => $type
		471
		472	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		473	given type of objects only (the additional parameter C<subtype> can be
		474	used to further limit to the given subtype).
		475
139	=item on_I<event> => \&cb	476	=item on_I<event> => \&cb
140		477
141	Call the given code reference whenever the named event happens (event is	478	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	479	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	480	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	489	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	490	object/class are recognised.
154		491
155	=back	492	=back
156		493
157	=item cf::attach_to_type $object_type, $subtype, ...	494	Example, define an attachment called "sockpuppet" that calls the given
		495	event handler when a monster attacks:
158		496
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	497	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	498	on_skill_attack => sub {
161	type.	499	my ($self, $victim) = @_;
		500	...
		501	}
		502	}
162		503
163	=item cf::attach_to_objects ...	504	=item $attachable->valid
164		505
165	Attach handlers to all objects. Do not use this except for debugging or	506	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	507	C-level object still exists. If you try to access an object that has no
167	the game.	508	valid C counterpart anymore you get an exception at runtime. This method
168		509	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	510	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		511
179	=cut	512	=cut
180		513
181	# the following variables are defined in .xs and must not be re-created	514	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	515	our @CB_GLOBAL = (); # registry for all global events
		516	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	517	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	518	our @CB_PLAYER = ();
		519	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	520	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	521	our @CB_MAP = ();
187		522
188	my %attachment;	523	my %attachment;
189		524
		525	sub cf::attachable::thawer_merge {
		526	# simply override everything except _meta
		527	local $_[0]{_meta};
		528	%{$_[0]} = %{$_[1]};
		529	}
		530
190	sub _attach_cb($\%$$$) {	531	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	532	my ($registry, $event, $prio, $cb) = @_;
192		533
193	use sort 'stable';	534	use sort 'stable';
194		535
195	$cb = [$prio, $cb];	536	$cb = [$prio, $cb];
196		537
197	@{$registry->[$event]} = sort	538	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	539	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	540	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	541	}
		542
		543	# hack
		544	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		545
204	# attach handles attaching event callbacks	546	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	547	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	548	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	549	sub _attach {
208	my ($registry, $klass, @arg) = @_;	550	my ($registry, $klass, @arg) = @_;
209		551
		552	my $object_type;
210	my $prio = 0;	553	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	554	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		555
		556	#TODO: get rid of this hack
		557	if ($attachable_klass{$klass}) {
		558	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		559	}
218		560
219	while (@arg) {	561	while (@arg) {
220	my $type = shift @arg;	562	my $type = shift @arg;
221		563
222	if ($type eq "prio") {	564	if ($type eq "prio") {
223	$prio = shift @arg;	565	$prio = shift @arg;
224		566
		567	} elsif ($type eq "type") {
		568	$object_type = shift @arg;
		569	$registry = $CB_TYPE[$object_type] ||= [];
		570
		571	} elsif ($type eq "subtype") {
		572	defined $object_type or Carp::croak "subtype specified without type";
		573	my $object_subtype = shift @arg;
		574	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		575
225	} elsif ($type eq "package") {	576	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	577	my $pkg = shift @arg;
227		578
228	while (my ($name, $id) = each %cb_id) {	579	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	580	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	581	_attach_cb $registry, $id, $prio, $cb;
231	}	582	}
232	}	583	}
233		584
234	} elsif (exists $cb_id{$type}) {	585	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	586	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		587
237	} elsif (ref $type) {	588	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	589	warn "attaching objects not supported, ignoring.\n";
239		590
240	} else {	591	} else {
241	shift @arg;	592	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	593	warn "attach argument '$type' not supported, ignoring.\n";
243	}	594	}
244	}	595	}
245
246	\%undo
247	}	596	}
248		597
249	sub _attach_attachment {	598	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	599	my ($obj, $name, %arg) = @_;
251		600
252	my $res;	601	return if exists $obj->{_attachment}{$name};
253		602
254	if (my $attach = $attachment{$name}) {	603	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	604	my $registry = $obj->registry;
256		605
257	for (@$attach) {	606	for (@$attach) {
258	my ($klass, @attach) = @$_;	607	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	608	_attach $registry, $klass, @attach;
260	}	609	}
261		610
262	$obj->{$name} = \%arg;	611	$obj->{$name} = \%arg;
263	} else {	612	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	613	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	614	}
266		615
267	$obj->{_attachment}{$name} = undef;	616	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	617	}
272		618
273	sub cf::object::attach {	619	sub cf::attachable::attach {
		620	if (ref $_[0]) {
		621	_object_attach @_;
		622	} else {
		623	_attach shift->_attach_registry, @_;
		624	}
		625	};
		626
		627	# all those should be optimised
		628	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	629	my ($obj, $name) = @_;
275		630
276	_attach_attachment $obj, $name, %arg;	631	if (ref $obj) {
277	}	632	delete $obj->{_attachment}{$name};
		633	reattach ($obj);
		634	} else {
		635	Carp::croak "cannot, currently, detach class attachments";
		636	}
		637	};
278		638
279	sub cf::player::attach {	639	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	640	my ($obj, $name) = @_;
281		641
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	642	exists $obj->{_attachment}{$name}
283	}	643	}
284		644
285	sub cf::map::attach {	645	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	646	eval "#line " . __LINE__ . " 'cf.pm'
		647	sub cf::\L$klass\E::_attach_registry {
		648	(\\\@CB_$klass, KLASS_$klass)
		649	}
287		650
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	651	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	652	my \$name = shift;
316		653
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	654	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		655	}
		656	";
		657	die if $@;
318	}	658	}
319		659
320	our $override;	660	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	661	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		662
…		…
336	for (@$callbacks) {	676	for (@$callbacks) {
337	eval { &{$_->[1]} };	677	eval { &{$_->[1]} };
338		678
339	if ($@) {	679	if ($@) {
340	warn "$@";	680	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	681	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	682	override;
343	}	683	}
344		684
345	return 1 if $override;	685	return 1 if $override;
346	}	686	}
347		687
348	0	688	0
349	}	689	}
		690
		691	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		692
		693	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		694
		695	Generate an object-specific event with the given arguments.
		696
		697	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		698	removed in future versions), and there is no public API to access override
		699	results (if you must, access C<@cf::invoke_results> directly).
		700
		701	=back
		702
		703	=cut
350		704
351	#############################################################################	705	#############################################################################
352	# object support	706	# object support
353		707
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	708	sub reattach {
		709	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	710	my ($obj) = @_;
		711
		712	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		713
369	my $registry = $obj->registry;	714	my $registry = $obj->registry;
370		715
371	@$registry = ();	716	@$registry = ();
372		717
373	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	718	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		719
375	for my $name (keys %{ $obj->{_attachment} || {} }) {	720	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	721	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	722	for (@$attach) {
378	my ($klass, @attach) = @$_;	723	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	724	_attach $registry, $klass, @attach;
380	}	725	}
381	} else {	726	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	727	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	728	}
384	}	729	}
385	}	730	}
386		731
387	sub object_freezer_save {	732	cf::attachable->attach (
388	my ($filename, $objs) = @_;
389
390	$filename .= ".pst";
391
392	if (@$objs) {
393	open my $fh, ">:raw", "$filename~";
394	chmod $fh, SAVE_MODE;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
396	close $fh;
397	rename "$filename~", $filename;
398	} else {
399	unlink $filename;
400	}
401	}
402
403	sub object_thawer_load {
404	my ($filename) = @_;
405
406	open my $fh, "<:raw:perlio", "$filename.pst"
407	or return;
408
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }
410	}
411
412	attach_to_objects
413	prio => -1000000,	733	prio => -1000000,
		734	on_instantiate => sub {
		735	my ($obj, $data) = @_;
		736
		737	$data = from_json $data;
		738
		739	for (@$data) {
		740	my ($name, $args) = @$_;
		741
		742	$obj->attach ($name, %{$args || {} });
		743	}
		744	},
		745	on_reattach => \&reattach,
414	on_clone => sub {	746	on_clone => sub {
415	my ($src, $dst) = @_;	747	my ($src, $dst) = @_;
416		748
417	@{$dst->registry} = @{$src->registry};	749	@{$dst->registry} = @{$src->registry};
418		750
419	%$dst = %$src;	751	%$dst = %$src;
420		752
421	%{$dst->{_attachment}} = %{$src->{_attachment}}	753	%{$dst->{_attachment}} = %{$src->{_attachment}}
422	if exists $src->{_attachment};	754	if exists $src->{_attachment};
423	},	755	},
424	;	756	);
		757
		758	sub object_freezer_save {
		759	my ($filename, $rdata, $objs) = @_;
		760
		761	sync_job {
		762	if (length $$rdata) {
		763	warn sprintf "saving %s (%d,%d)\n",
		764	$filename, length $$rdata, scalar @$objs;
		765
		766	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		767	chmod SAVE_MODE, $fh;
		768	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		769	aio_fsync $fh if $cf::USE_FSYNC;
		770	close $fh;
		771
		772	if (@$objs) {
		773	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		774	chmod SAVE_MODE, $fh;
		775	my $data = Storable::nfreeze { version => 1, objs => $objs };
		776	aio_write $fh, 0, (length $data), $data, 0;
		777	aio_fsync $fh if $cf::USE_FSYNC;
		778	close $fh;
		779	aio_rename "$filename.pst~", "$filename.pst";
		780	}
		781	} else {
		782	aio_unlink "$filename.pst";
		783	}
		784
		785	aio_rename "$filename~", $filename;
		786	} else {
		787	warn "FATAL: $filename~: $!\n";
		788	}
		789	} else {
		790	aio_unlink $filename;
		791	aio_unlink "$filename.pst";
		792	}
		793	}
		794	}
		795
		796	sub object_freezer_as_string {
		797	my ($rdata, $objs) = @_;
		798
		799	use Data::Dumper;
		800
		801	$$rdata . Dumper $objs
		802	}
		803
		804	sub object_thawer_load {
		805	my ($filename) = @_;
		806
		807	my ($data, $av);
		808
		809	(aio_load $filename, $data) >= 0
		810	or return;
		811
		812	unless (aio_stat "$filename.pst") {
		813	(aio_load "$filename.pst", $av) >= 0
		814	or return;
		815	$av = eval { (Storable::thaw $av)->{objs} };
		816	}
		817
		818	warn sprintf "loading %s (%d)\n",
		819	$filename, length $data, scalar @{$av || []};#d#
		820	return ($data, $av);
		821	}
425		822
426	#############################################################################	823	#############################################################################
427	# old plug-in events	824	# command handling &c
428		825
429	sub inject_event {	826	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		827
433	my $cb = $hook[$event_code]{$extension}	828	Register a callback for execution when the client sends the user command
434	or return;	829	$name.
435		830
436	&$cb	831	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		832
458	sub register_command {	833	sub register_command {
459	my ($name, $time, $cb) = @_;	834	my ($name, $cb) = @_;
460		835
461	my $caller = caller;	836	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	837	#warn "registering command '$name/$time' to '$caller'";
463		838
464	push @{ $command{$name} }, [$time, $cb, $caller];	839	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	840	}
		841
		842	=item cf::register_extcmd $name => \&callback($pl,$packet);
		843
		844	Register a callbackf ro execution when the client sends an extcmd packet.
		845
		846	If the callback returns something, it is sent back as if reply was being
		847	called.
		848
		849	=cut
467		850
468	sub register_extcmd {	851	sub register_extcmd {
469	my ($name, $cb) = @_;	852	my ($name, $cb) = @_;
470		853
471	my $caller = caller;	854	$EXTCMD{$name} = $cb;
472	#warn "registering extcmd '$name' to '$caller'";
473
474	$extcmd{$name} = [$cb, $caller];
475	}	855	}
476		856
477	sub register {	857	cf::player->attach (
478	my ($base, $pkg) = @_;	858	on_command => sub {
		859	my ($pl, $name, $params) = @_;
479		860
480	#TODO	861	my $cb = $COMMAND{$name}
481	}	862	or return;
		863
		864	for my $cmd (@$cb) {
		865	$cmd->[1]->($pl->ob, $params);
		866	}
		867
		868	cf::override;
		869	},
		870	on_extcmd => sub {
		871	my ($pl, $buf) = @_;
		872
		873	my $msg = eval { from_json $buf };
		874
		875	if (ref $msg) {
		876	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		877	if (my %reply = $cb->($pl, $msg)) {
		878	$pl->ext_reply ($msg->{msgid}, %reply);
		879	}
		880	}
		881	} else {
		882	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		883	}
		884
		885	cf::override;
		886	},
		887	);
482		888
483	sub load_extension {	889	sub load_extension {
484	my ($path) = @_;	890	my ($path) = @_;
485		891
486	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	892	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
487	my $base = $1;	893	my $base = $1;
488	my $pkg = $1;	894	my $pkg = $1;
489	$pkg =~ s/[^[:word:]]/_/g;	895	$pkg =~ s/[^[:word:]]/_/g;
490	$pkg = "ext::$pkg";	896	$pkg = "ext::$pkg";
491		897
492	warn "loading '$path' into '$pkg'\n";	898	warn "... loading '$path' into '$pkg'\n";
493		899
494	open my $fh, "<:utf8", $path	900	open my $fh, "<:utf8", $path
495	or die "$path: $!";	901	or die "$path: $!";
496		902
497	my $source =	903	my $source =
498	"package $pkg; use strict; use utf8;\n"	904	"package $pkg; use strict; use utf8;\n"
499	. "#line 1 \"$path\"\n{\n"	905	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })	906	. (do { local $/; <$fh> })
501	. "\n};\n1";	907	. "\n};\n1";
502		908
503	eval $source	909	unless (eval $source) {
504	or die "$path: $@";	910	my $msg = $@ ? "$path: $@\n"
505		911	: "extension disabled.\n";
506	push @exts, $pkg;	912	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
507	$ext_pkg{$base} = $pkg;	913	warn $@;
508		914	warn "mandatory extension failed to load, exiting.\n";
509	# no strict 'refs';	915	exit 1;
510	# @{"$pkg\::ISA"} = ext::;	916	}
511		917	die $@;
512	register $base, $pkg;
513	}
514
515	sub unload_extension {
516	my ($pkg) = @_;
517
518	warn "removing extension $pkg\n";
519
520	# remove hooks
521	#TODO
522	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};
524	# }	918	}
525		919
526	# remove commands	920	push @EXTS, $pkg;
527	for my $name (keys %command) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
529
530	if (@cb) {
531	$command{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};
536	}
537	}
538
539	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
541	delete $extcmd{$name};
542	}
543
544	if (my $cb = $pkg->can ("unload")) {
545	eval {
546	$cb->($pkg);
547	1
548	} or warn "$pkg unloaded, but with errors: $@";
549	}
550
551	Symbol::delete_package $pkg;
552	}	921	}
553		922
554	sub load_extensions {	923	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {	924	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;	925	next unless -r $ext;
559	eval {	926	eval {
560	load_extension $ext;	927	load_extension $ext;
561	1	928	1
562	} or warn "$ext not loaded: $@";	929	} or warn "$ext not loaded: $@";
563	}	930	}
564	}	931	}
565		932
566	sub _perl_reload(&) {	933	#############################################################################
		934
		935	=head2 CORE EXTENSIONS
		936
		937	Functions and methods that extend core crossfire objects.
		938
		939	=cut
		940
		941	package cf::player;
		942
		943	use Coro::AIO;
		944
		945	=head3 cf::player
		946
		947	=over 4
		948
		949	=item cf::player::find $login
		950
		951	Returns the given player object, loading it if necessary (might block).
		952
		953	=cut
		954
		955	sub playerdir($) {
		956	cf::localdir
		957	. "/"
		958	. cf::playerdir
		959	. "/"
		960	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		961	}
		962
		963	sub path($) {
		964	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		965
		966	(playerdir $login) . "/playerdata"
		967	}
		968
		969	sub find_active($) {
		970	$cf::PLAYER{$_[0]}
		971	and $cf::PLAYER{$_[0]}->active
		972	and $cf::PLAYER{$_[0]}
		973	}
		974
		975	sub exists($) {
		976	my ($login) = @_;
		977
		978	$cf::PLAYER{$login}
		979	or cf::sync_job { !aio_stat path $login }
		980	}
		981
		982	sub find($) {
		983	return $cf::PLAYER{$_[0]} || do {
		984	my $login = $_[0];
		985
		986	my $guard = cf::lock_acquire "user_find:$login";
		987
		988	$cf::PLAYER{$_[0]} || do {
		989	# rename old playerfiles to new ones
		990	#TODO: remove when no longer required
		991	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		992	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		993	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		994	aio_unlink +(playerdir $login) . "/$login.pl";
		995
		996	my $pl = load_pl path $login
		997	or return;
		998	$cf::PLAYER{$login} = $pl
		999	}
		1000	}
		1001	}
		1002
		1003	sub save($) {
		1004	my ($pl) = @_;
		1005
		1006	return if $pl->{deny_save};
		1007
		1008	my $path = path $pl;
		1009	my $guard = cf::lock_acquire "user_save:$path";
		1010
		1011	return if $pl->{deny_save};
		1012
		1013	aio_mkdir playerdir $pl, 0770;
		1014	$pl->{last_save} = $cf::RUNTIME;
		1015
		1016	$pl->save_pl ($path);
		1017	Coro::cede;
		1018	}
		1019
		1020	sub new($) {
		1021	my ($login) = @_;
		1022
		1023	my $self = create;
		1024
		1025	$self->ob->name ($login);
		1026	$self->{deny_save} = 1;
		1027
		1028	$cf::PLAYER{$login} = $self;
		1029
		1030	$self
		1031	}
		1032
		1033	=item $pl->quit_character
		1034
		1035	Nukes the player without looking back. If logged in, the connection will
		1036	be destroyed. May block for a long time.
		1037
		1038	=cut
		1039
		1040	sub quit_character {
		1041	my ($pl) = @_;
		1042
		1043	my $name = $pl->ob->name;
		1044
		1045	$pl->{deny_save} = 1;
		1046	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1047
		1048	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1049	$pl->deactivate;
		1050	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1051	$pl->ns->destroy if $pl->ns;
		1052
		1053	my $path = playerdir $pl;
		1054	my $temp = "$path~$cf::RUNTIME~deleting~";
		1055	aio_rename $path, $temp;
		1056	delete $cf::PLAYER{$pl->ob->name};
		1057	$pl->destroy;
		1058
		1059	my $prefix = qr<^~\Q$name\E/>;
		1060
		1061	# nuke player maps
		1062	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1063
		1064	IO::AIO::aio_rmtree $temp;
		1065	}
		1066
		1067	=item $pl->kick
		1068
		1069	Kicks a player out of the game. This destroys the connection.
		1070
		1071	=cut
		1072
		1073	sub kick {
		1074	my ($pl, $kicker) = @_;
		1075
		1076	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1077	$pl->killer ("kicked");
		1078	$pl->ns->destroy;
		1079	}
		1080
		1081	=item cf::player::list_logins
		1082
		1083	Returns am arrayref of all valid playernames in the system, can take a
		1084	while and may block, so not sync_job-capable, ever.
		1085
		1086	=cut
		1087
		1088	sub list_logins {
		1089	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1090	or return [];
		1091
		1092	my @logins;
		1093
		1094	for my $login (@$dirs) {
		1095	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1096	aio_read $fh, 0, 512, my $buf, 0 or next;
		1097	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1098
		1099	utf8::decode $login;
		1100	push @logins, $login;
		1101	}
		1102
		1103	\@logins
		1104	}
		1105
		1106	=item $player->maps
		1107
		1108	Returns an arrayref of map paths that are private for this
		1109	player. May block.
		1110
		1111	=cut
		1112
		1113	sub maps($) {
		1114	my ($pl) = @_;
		1115
		1116	$pl = ref $pl ? $pl->ob->name : $pl;
		1117
		1118	my $files = aio_readdir playerdir $pl
		1119	or return;
		1120
		1121	my @paths;
		1122
		1123	for (@$files) {
		1124	utf8::decode $_;
		1125	next if /\.(?:pl|pst)$/;
		1126	next unless /^$PATH_SEP/o;
		1127
		1128	push @paths, cf::map::normalise "~$pl/$_";
		1129	}
		1130
		1131	\@paths
		1132	}
		1133
		1134	=item $player->ext_reply ($msgid, %msg)
		1135
		1136	Sends an ext reply to the player.
		1137
		1138	=cut
		1139
		1140	sub ext_reply($$%) {
		1141	my ($self, $id, %msg) = @_;
		1142
		1143	$msg{msgid} = $id;
		1144
		1145	$self->send ("ext " . cf::to_json \%msg);
		1146	}
		1147
		1148	=item $player->ext_event ($type, %msg)
		1149
		1150	Sends an ext event to the client.
		1151
		1152	=cut
		1153
		1154	sub ext_event($$%) {
		1155	my ($self, $type, %msg) = @_;
		1156
		1157	$self->ns->ext_event ($type, %msg);
		1158	}
		1159
		1160	=head3 cf::region
		1161
		1162	=over 4
		1163
		1164	=cut
		1165
		1166	package cf::region;
		1167
		1168	=item cf::region::find_by_path $path
		1169
		1170	Tries to decuce the probable region for a map knowing only its path.
		1171
		1172	=cut
		1173
		1174	sub find_by_path($) {
		1175	my ($path) = @_;
		1176
		1177	my ($match, $specificity);
		1178
		1179	for my $region (list) {
		1180	if ($region->match && $path =~ $region->match) {
		1181	($match, $specificity) = ($region, $region->specificity)
		1182	if $region->specificity > $specificity;
		1183	}
		1184	}
		1185
		1186	$match
		1187	}
		1188
		1189	=back
		1190
		1191	=head3 cf::map
		1192
		1193	=over 4
		1194
		1195	=cut
		1196
		1197	package cf::map;
		1198
		1199	use Fcntl;
		1200	use Coro::AIO;
		1201
		1202	use overload
		1203	'""' => \&as_string,
		1204	fallback => 1;
		1205
		1206	our $MAX_RESET = 3600;
		1207	our $DEFAULT_RESET = 3000;
		1208
		1209	sub generate_random_map {
		1210	my ($self, $rmp) = @_;
		1211	# mit "rum" bekleckern, nicht
		1212	$self->_create_random_map (
		1213	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1214	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1215	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1216	$rmp->{exit_on_final_map},
		1217	$rmp->{xsize}, $rmp->{ysize},
		1218	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1219	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1220	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1221	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1222	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1223	(cf::region::find $rmp->{region}), $rmp->{custom}
		1224	)
		1225	}
		1226
		1227	=item cf::map->register ($regex, $prio)
		1228
		1229	Register a handler for the map path matching the given regex at the
		1230	givne priority (higher is better, built-in handlers have priority 0, the
		1231	default).
		1232
		1233	=cut
		1234
		1235	sub register {
		1236	my (undef, $regex, $prio) = @_;
		1237	my $pkg = caller;
		1238
		1239	no strict;
		1240	push @{"$pkg\::ISA"}, __PACKAGE__;
		1241
		1242	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1243	}
		1244
		1245	# also paths starting with '/'
		1246	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1247
		1248	sub thawer_merge {
		1249	my ($self, $merge) = @_;
		1250
		1251	# we have to keep some variables in memory intact
		1252	local $self->{path};
		1253	local $self->{load_path};
		1254	local $self->{deny_save};
		1255	local $self->{deny_reset};
		1256
		1257	$self->SUPER::thawer_merge ($merge);
		1258	}
		1259
		1260	sub normalise {
		1261	my ($path, $base) = @_;
		1262
		1263	$path = "$path"; # make sure its a string
		1264
		1265	$path =~ s/\.map$//;
		1266
		1267	# map plan:
		1268	#
		1269	# /! non-realised random map exit (special hack!)
		1270	# {... are special paths that are not being touched
		1271	# ?xxx/... are special absolute paths
		1272	# ?random/... random maps
		1273	# /... normal maps
		1274	# ~user/... per-player map of a specific user
		1275
		1276	$path =~ s/$PATH_SEP/\//go;
		1277
		1278	# treat it as relative path if it starts with
		1279	# something that looks reasonable
		1280	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1281	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1282
		1283	$base =~ s{[^/]+/?$}{};
		1284	$path = "$base/$path";
		1285	}
		1286
		1287	for ($path) {
		1288	redo if s{//}{/};
		1289	redo if s{/\.?/}{/};
		1290	redo if s{/[^/]+/\.\./}{/};
		1291	}
		1292
		1293	$path
		1294	}
		1295
		1296	sub new_from_path {
		1297	my (undef, $path, $base) = @_;
		1298
		1299	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1300
		1301	$path = normalise $path, $base;
		1302
		1303	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1304	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1305	my $self = bless cf::map::new, $pkg;
		1306	$self->{path} = $path; $self->path ($path);
		1307	$self->init; # pass $1 etc.
		1308	return $self;
		1309	}
		1310	}
		1311
		1312	Carp::carp "unable to resolve path '$path' (base '$base').";
		1313	()
		1314	}
		1315
		1316	sub init {
		1317	my ($self) = @_;
		1318
		1319	$self
		1320	}
		1321
		1322	sub as_string {
		1323	my ($self) = @_;
		1324
		1325	"$self->{path}"
		1326	}
		1327
		1328	# the displayed name, this is a one way mapping
		1329	sub visible_name {
		1330	&as_string
		1331	}
		1332
		1333	# the original (read-only) location
		1334	sub load_path {
		1335	my ($self) = @_;
		1336
		1337	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1338	}
		1339
		1340	# the temporary/swap location
		1341	sub save_path {
		1342	my ($self) = @_;
		1343
		1344	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1345	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1346	}
		1347
		1348	# the unique path, undef == no special unique path
		1349	sub uniq_path {
		1350	my ($self) = @_;
		1351
		1352	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1353	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1354	}
		1355
		1356	# and all this just because we cannot iterate over
		1357	# all maps in C++...
		1358	sub change_all_map_light {
		1359	my ($change) = @_;
		1360
		1361	$_->change_map_light ($change)
		1362	for grep $_->outdoor, values %cf::MAP;
		1363	}
		1364
		1365	sub unlink_save {
		1366	my ($self) = @_;
		1367
		1368	utf8::encode (my $save = $self->save_path);
		1369	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1370	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1371	}
		1372
		1373	sub load_header_from($) {
		1374	my ($self, $path) = @_;
		1375
		1376	utf8::encode $path;
		1377	#aio_open $path, O_RDONLY, 0
		1378	# or return;
		1379
		1380	$self->_load_header ($path)
		1381	or return;
		1382
		1383	$self->{load_path} = $path;
		1384
		1385	1
		1386	}
		1387
		1388	sub load_header_orig {
		1389	my ($self) = @_;
		1390
		1391	$self->load_header_from ($self->load_path)
		1392	}
		1393
		1394	sub load_header_temp {
		1395	my ($self) = @_;
		1396
		1397	$self->load_header_from ($self->save_path)
		1398	}
		1399
		1400	sub prepare_temp {
		1401	my ($self) = @_;
		1402
		1403	$self->last_access ((delete $self->{last_access})
		1404	|| $cf::RUNTIME); #d#
		1405	# safety
		1406	$self->{instantiate_time} = $cf::RUNTIME
		1407	if $self->{instantiate_time} > $cf::RUNTIME;
		1408	}
		1409
		1410	sub prepare_orig {
		1411	my ($self) = @_;
		1412
		1413	$self->{load_original} = 1;
		1414	$self->{instantiate_time} = $cf::RUNTIME;
		1415	$self->last_access ($cf::RUNTIME);
		1416	$self->instantiate;
		1417	}
		1418
		1419	sub load_header {
		1420	my ($self) = @_;
		1421
		1422	if ($self->load_header_temp) {
		1423	$self->prepare_temp;
		1424	} else {
		1425	$self->load_header_orig
		1426	or return;
		1427	$self->prepare_orig;
		1428	}
		1429
		1430	$self->default_region (cf::region::find_by_path $self->{path})
		1431	unless $self->default_region;
		1432
		1433	1
		1434	}
		1435
		1436	sub find;
		1437	sub find {
		1438	my ($path, $origin) = @_;
		1439
		1440	$path = normalise $path, $origin && $origin->path;
		1441
		1442	cf::lock_wait "map_find:$path";
		1443
		1444	$cf::MAP{$path} || do {
		1445	my $guard = cf::lock_acquire "map_find:$path";
		1446	my $map = new_from_path cf::map $path
		1447	or return;
		1448
		1449	$map->{last_save} = $cf::RUNTIME;
		1450
		1451	$map->load_header
		1452	or return;
		1453
		1454	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1455	# doing this can freeze the server in a sync job, obviously
		1456	#$cf::WAIT_FOR_TICK->wait;
		1457	$map->reset;
		1458	undef $guard;
		1459	return find $path;
		1460	}
		1461
		1462	$cf::MAP{$path} = $map
		1463	}
		1464	}
		1465
		1466	sub pre_load { }
		1467	sub post_load { }
		1468
		1469	sub load {
		1470	my ($self) = @_;
		1471
		1472	local $self->{deny_reset} = 1; # loading can take a long time
		1473
		1474	my $path = $self->{path};
		1475	my $guard = cf::lock_acquire "map_load:$path";
		1476
		1477	return if $self->in_memory != cf::MAP_SWAPPED;
		1478
		1479	$self->in_memory (cf::MAP_LOADING);
		1480
		1481	$self->alloc;
		1482
		1483	$self->pre_load;
		1484	Coro::cede;
		1485
		1486	$self->_load_objects ($self->{load_path}, 1)
		1487	or return;
		1488
		1489	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1490	if delete $self->{load_original};
		1491
		1492	if (my $uniq = $self->uniq_path) {
		1493	utf8::encode $uniq;
		1494	if (aio_open $uniq, O_RDONLY, 0) {
		1495	$self->clear_unique_items;
		1496	$self->_load_objects ($uniq, 0);
		1497	}
		1498	}
		1499
		1500	Coro::cede;
		1501	# now do the right thing for maps
		1502	$self->link_multipart_objects;
		1503	Coro::cede;
		1504
		1505	unless ($self->{deny_activate}) {
		1506	$self->decay_objects;
		1507	$self->fix_auto_apply;
		1508	$self->update_buttons;
		1509	Coro::cede;
		1510	$self->set_darkness_map;
		1511	$self->difficulty ($self->estimate_difficulty)
		1512	unless $self->difficulty;
		1513	Coro::cede;
		1514	$self->activate;
		1515	Coro::cede;
		1516	}
		1517
		1518	$self->post_load;
		1519	Coro::cede;
		1520
		1521	$self->in_memory (cf::MAP_IN_MEMORY);
		1522	}
		1523
		1524	sub customise_for {
		1525	my ($self, $ob) = @_;
		1526
		1527	return find "~" . $ob->name . "/" . $self->{path}
		1528	if $self->per_player;
		1529
		1530	$self
		1531	}
		1532
		1533	# find and load all maps in the 3x3 area around a map
		1534	sub load_diag {
567	my ($msg) = @_;	1535	my ($map) = @_;
568		1536
569	$msg->("reloading...");	1537	my @diag; # diagonal neighbours
570		1538
571	eval {	1539	for (0 .. 3) {
572	# 1. cancel all watchers	1540	my $neigh = $map->tile_path ($_)
573	$_->cancel for Event::all_watchers;	1541	or next;
		1542	$neigh = find $neigh, $map
		1543	or next;
		1544	$neigh->load;
574		1545
575	# 2. unload all extensions	1546	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
576	for (@exts) {	1547	[$neigh->tile_path (($_ + 1) % 4), $neigh];
577	$msg->("unloading <$_>");	1548	}
578	unload_extension $_;
579	}
580		1549
581	# 3. unload all modules loaded from $LIBDIR	1550	for (@diag) {
582	while (my ($k, $v) = each %INC) {	1551	my $neigh = find @$_
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1552	or next;
		1553	$neigh->load;
		1554	}
		1555	}
584		1556
585	$msg->("removing <$k>");	1557	sub find_sync {
586	delete $INC{$k};	1558	my ($path, $origin) = @_;
587		1559
588	$k =~ s/\.pm$//;	1560	cf::sync_job { find $path, $origin }
589	$k =~ s/\//::/g;	1561	}
590		1562
591	if (my $cb = $k->can ("unload_module")) {	1563	sub do_load_sync {
592	$cb->();	1564	my ($map) = @_;
		1565
		1566	cf::sync_job { $map->load };
		1567	}
		1568
		1569	our %MAP_PREFETCH;
		1570	our $MAP_PREFETCHER = undef;
		1571
		1572	sub find_async {
		1573	my ($path, $origin) = @_;
		1574
		1575	$path = normalise $path, $origin && $origin->{path};
		1576
		1577	if (my $map = $cf::MAP{$path}) {
		1578	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1579	}
		1580
		1581	undef $MAP_PREFETCH{$path};
		1582	$MAP_PREFETCHER ||= cf::async {
		1583	while (%MAP_PREFETCH) {
		1584	for my $path (keys %MAP_PREFETCH) {
		1585	my $map = find $path
		1586	or next;
		1587	$map->load;
		1588
		1589	delete $MAP_PREFETCH{$path};
593	}	1590	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604		1591	}
605	# 6. unload cf.pm "a bit"	1592	undef $MAP_PREFETCHER;
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};	1593	};
616	$msg->($@) if $@;	1594	$MAP_PREFETCHER->prio (6);
617		1595
618	$msg->("reloaded");	1596	()
619	};	1597	}
620		1598
621	sub perl_reload() {	1599	sub save {
622	_perl_reload {	1600	my ($self) = @_;
623	warn $_[0];	1601
624	print "$_[0]\n";	1602	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1603
		1604	$self->{last_save} = $cf::RUNTIME;
		1605
		1606	return unless $self->dirty;
		1607
		1608	my $save = $self->save_path; utf8::encode $save;
		1609	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1610
		1611	$self->{load_path} = $save;
		1612
		1613	return if $self->{deny_save};
		1614
		1615	local $self->{last_access} = $self->last_access;#d#
		1616
		1617	cf::async {
		1618	$_->contr->save for $self->players;
625	};	1619	};
626	}
627		1620
628	register_command "perl-reload", 0, sub {	1621	if ($uniq) {
629	my ($who, $arg) = @_;	1622	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
630		1623	$self->_save_objects ($uniq, cf::IO_UNIQUES);
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};
636	}
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {
645	my ($pl, $buf) = @_;
646
647	my $msg = eval { from_json $buf };
648
649	if (ref $msg) {
650	if (my $cb = $extcmd{$msg->{msgtype}}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {
652	$pl->ext_reply ($msg->{msgid}, %reply);
653	}
654	}
655	} else {	1624	} else {
656	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1625	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
657	}
658
659	cf::override;
660	},	1626	}
661	;	1627	}
662		1628
663	#############################################################################	1629	sub swap_out {
664	# load/save/clean perl data associated with a map
665
666	*cf::mapsupport::on_clean = sub {
667	my ($map) = @_;	1630	my ($self) = @_;
668		1631
669	my $path = $map->tmpname;	1632	# save first because save cedes
670	defined $path or return;	1633	$self->save;
671		1634
672	unlink "$path.cfperl";	1635	my $lock = cf::lock_acquire "map_data:" . $self->path;
673	unlink "$path.pst";
674	};
675		1636
676	*cf::mapsupport::on_swapin =	1637	return if $self->players;
677	*cf::mapsupport::on_load = sub {	1638	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1639	return if $self->{deny_save};
		1640
		1641	$self->clear;
		1642	$self->in_memory (cf::MAP_SWAPPED);
		1643	}
		1644
		1645	sub reset_at {
678	my ($map) = @_;	1646	my ($self) = @_;
679		1647
680	my $path = $map->tmpname;	1648	# TODO: safety, remove and allow resettable per-player maps
681	$path = $map->path unless defined $path;	1649	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1650	return 1e99 if $self->{deny_reset};
682		1651
683	open my $fh, "<:raw", "$path.cfperl"	1652	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
684	or return; # no perl data	1653	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
685		1654
686	my $data = Storable::thaw do { local $/; <$fh> };	1655	$time + $to
687
688	$data->{version} <= 1
689	or return; # too new
690
691	$map->_set_obs ($data->{obs});
692	$map->invoke (EVENT_MAP_UPGRADE);
693	};
694
695	attach_to_maps prio => -10000, package => cf::mapsupport::;
696
697	#############################################################################
698	# load/save perl data associated with player->ob objects
699
700	sub all_objects(@) {
701	@_, map all_objects ($_->inv), @_
702	}	1656	}
703		1657
704	attach_to_players	1658	sub should_reset {
705	on_load => sub {	1659	my ($self) = @_;
706	my ($pl, $path) = @_;
707		1660
708	for my $o (all_objects $pl->ob) {	1661	$self->reset_at <= $cf::RUNTIME
709	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1662	}
710	$o->set_ob_key_value ("_perl_data");
711		1663
712	%$o = %{ Storable::thaw pack "H*", $value };	1664	sub reset {
713	}	1665	my ($self) = @_;
714	}	1666
		1667	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1668
		1669	return if $self->players;
		1670	return if $self->isa ("ext::map_per_player");#d#
		1671
		1672	warn "resetting map ", $self->path;#d#
		1673
		1674	$self->in_memory (cf::MAP_SWAPPED);
		1675
		1676	# need to save uniques path
		1677	unless ($self->{deny_save}) {
		1678	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1679
		1680	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1681	if $uniq;
715	},	1682	}
716	;
717		1683
718	#############################################################################	1684	delete $cf::MAP{$self->path};
719	# core extensions - in perl
720		1685
721	=item cf::player::exists $login	1686	$self->clear;
722		1687
723	Returns true when the given account exists.	1688	$_->clear_links_to ($self) for values %cf::MAP;
724		1689
725	=cut	1690	$self->unlink_save;
726		1691	$self->destroy;
727	sub cf::player::exists($) {
728	cf::player::find $_[0]
729	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
730	}	1692	}
731		1693
		1694	my $nuke_counter = "aaaa";
		1695
		1696	sub nuke {
		1697	my ($self) = @_;
		1698
		1699	delete $cf::MAP{$self->path};
		1700
		1701	$self->unlink_save;
		1702
		1703	bless $self, "cf::map";
		1704	delete $self->{deny_reset};
		1705	$self->{deny_save} = 1;
		1706	$self->reset_timeout (1);
		1707	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1708
		1709	$cf::MAP{$self->path} = $self;
		1710
		1711	$self->reset; # polite request, might not happen
		1712	}
		1713
		1714	=item cf::map::unique_maps
		1715
		1716	Returns an arrayref of paths of all shared maps that have
		1717	instantiated unique items. May block.
		1718
		1719	=cut
		1720
		1721	sub unique_maps() {
		1722	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1723	or return;
		1724
		1725	my @paths;
		1726
		1727	for (@$files) {
		1728	utf8::decode $_;
		1729	next if /\.pst$/;
		1730	next unless /^$PATH_SEP/o;
		1731
		1732	push @paths, cf::map::normalise $_;
		1733	}
		1734
		1735	\@paths
		1736	}
		1737
		1738	package cf;
		1739
		1740	=back
		1741
		1742	=head3 cf::object
		1743
		1744	=cut
		1745
		1746	package cf::object;
		1747
		1748	=over 4
		1749
		1750	=item $ob->inv_recursive
		1751
		1752	Returns the inventory of the object _and_ their inventories, recursively.
		1753
		1754	=cut
		1755
		1756	sub inv_recursive_;
		1757	sub inv_recursive_ {
		1758	map { $_, inv_recursive_ $_->inv } @_
		1759	}
		1760
		1761	sub inv_recursive {
		1762	inv_recursive_ inv $_[0]
		1763	}
		1764
		1765	package cf;
		1766
		1767	=back
		1768
		1769	=head3 cf::object::player
		1770
		1771	=over 4
		1772
732	=item $player->reply ($npc, $msg[, $flags])	1773	=item $player_object->reply ($npc, $msg[, $flags])
733		1774
734	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1775	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
735	can be C<undef>. Does the right thing when the player is currently in a	1776	can be C<undef>. Does the right thing when the player is currently in a
736	dialogue with the given NPC character.	1777	dialogue with the given NPC character.
737		1778
738	=cut	1779	=cut
739		1780
740	# rough implementation of a future "reply" method that works	1781	# rough implementation of a future "reply" method that works
741	# with dialog boxes.	1782	# with dialog boxes.
		1783	#TODO: the first argument must go, split into a $npc->reply_to ( method
742	sub cf::object::player::reply($$$;$) {	1784	sub cf::object::player::reply($$$;$) {
743	my ($self, $npc, $msg, $flags) = @_;	1785	my ($self, $npc, $msg, $flags) = @_;
744		1786
745	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1787	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
746		1788
…		…
750	$msg = $npc->name . " says: $msg" if $npc;	1792	$msg = $npc->name . " says: $msg" if $npc;
751	$self->message ($msg, $flags);	1793	$self->message ($msg, $flags);
752	}	1794	}
753	}	1795	}
754		1796
755	=item $player->ext_reply ($msgid, $msgtype, %msg)	1797	=item $player_object->may ("access")
756		1798
757	Sends an ext reply to the player.	1799	Returns wether the given player is authorized to access resource "access"
		1800	(e.g. "command_wizcast").
758		1801
759	=cut	1802	=cut
760		1803
761	sub cf::player::ext_reply($$$%) {	1804	sub cf::object::player::may {
		1805	my ($self, $access) = @_;
		1806
		1807	$self->flag (cf::FLAG_WIZ) ||
		1808	(ref $cf::CFG{"may_$access"}
		1809	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1810	: $cf::CFG{"may_$access"})
		1811	}
		1812
		1813	=item $player_object->enter_link
		1814
		1815	Freezes the player and moves him/her to a special map (C<{link}>).
		1816
		1817	The player should be reasonably safe there for short amounts of time. You
		1818	I<MUST> call C<leave_link> as soon as possible, though.
		1819
		1820	Will never block.
		1821
		1822	=item $player_object->leave_link ($map, $x, $y)
		1823
		1824	Moves the player out of the special C<{link}> map onto the specified
		1825	map. If the map is not valid (or omitted), the player will be moved back
		1826	to the location he/she was before the call to C<enter_link>, or, if that
		1827	fails, to the emergency map position.
		1828
		1829	Might block.
		1830
		1831	=cut
		1832
		1833	sub link_map {
		1834	unless ($LINK_MAP) {
		1835	$LINK_MAP = cf::map::find "{link}"
		1836	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1837	$LINK_MAP->load;
		1838	}
		1839
		1840	$LINK_MAP
		1841	}
		1842
		1843	sub cf::object::player::enter_link {
		1844	my ($self) = @_;
		1845
		1846	$self->deactivate_recursive;
		1847
		1848	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1849
		1850	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1851	if $self->map;
		1852
		1853	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1854	}
		1855
		1856	sub cf::object::player::leave_link {
		1857	my ($self, $map, $x, $y) = @_;
		1858
		1859	my $link_pos = delete $self->{_link_pos};
		1860
		1861	unless ($map) {
		1862	# restore original map position
		1863	($map, $x, $y) = @{ $link_pos || [] };
		1864	$map = cf::map::find $map;
		1865
		1866	unless ($map) {
		1867	($map, $x, $y) = @$EMERGENCY_POSITION;
		1868	$map = cf::map::find $map
		1869	or die "FATAL: cannot load emergency map\n";
		1870	}
		1871	}
		1872
		1873	($x, $y) = (-1, -1)
		1874	unless (defined $x) && (defined $y);
		1875
		1876	# use -1 or undef as default coordinates, not 0, 0
		1877	($x, $y) = ($map->enter_x, $map->enter_y)
		1878	if $x <=0 && $y <= 0;
		1879
		1880	$map->load;
		1881	$map->load_diag;
		1882
		1883	return unless $self->contr->active;
		1884	$self->activate_recursive;
		1885
		1886	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1887	$self->enter_map ($map, $x, $y);
		1888	}
		1889
		1890	cf::player->attach (
		1891	on_logout => sub {
		1892	my ($pl) = @_;
		1893
		1894	# abort map switching before logout
		1895	if ($pl->ob->{_link_pos}) {
		1896	cf::sync_job {
		1897	$pl->ob->leave_link
		1898	};
		1899	}
		1900	},
		1901	on_login => sub {
		1902	my ($pl) = @_;
		1903
		1904	# try to abort aborted map switching on player login :)
		1905	# should happen only on crashes
		1906	if ($pl->ob->{_link_pos}) {
		1907	$pl->ob->enter_link;
		1908	(async {
		1909	$pl->ob->reply (undef,
		1910	"There was an internal problem at your last logout, "
		1911	. "the server will try to bring you to your intended destination in a second.",
		1912	cf::NDI_RED);
		1913	# we need this sleep as the login has a concurrent enter_exit running
		1914	# and this sleep increases chances of the player not ending up in scorn
		1915	Coro::Timer::sleep 1;
		1916	$pl->ob->leave_link;
		1917	})->prio (2);
		1918	}
		1919	},
		1920	);
		1921
		1922	=item $player_object->goto ($path, $x, $y)
		1923
		1924	=cut
		1925
		1926	sub cf::object::player::goto {
		1927	my ($self, $path, $x, $y) = @_;
		1928
		1929	$self->enter_link;
		1930
		1931	(async {
		1932	my $map = eval {
		1933	my $map = cf::map::find $path;
		1934	$map = $map->customise_for ($self) if $map;
		1935	$map
		1936	} or
		1937	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1938
		1939	$self->leave_link ($map, $x, $y);
		1940	})->prio (1);
		1941	}
		1942
		1943	=item $player_object->enter_exit ($exit_object)
		1944
		1945	=cut
		1946
		1947	sub parse_random_map_params {
		1948	my ($spec) = @_;
		1949
		1950	my $rmp = { # defaults
		1951	xsize => (cf::rndm 15, 40),
		1952	ysize => (cf::rndm 15, 40),
		1953	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1954	#layout => string,
		1955	};
		1956
		1957	for (split /\n/, $spec) {
		1958	my ($k, $v) = split /\s+/, $_, 2;
		1959
		1960	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1961	}
		1962
		1963	$rmp
		1964	}
		1965
		1966	sub prepare_random_map {
		1967	my ($exit) = @_;
		1968
		1969	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1970
		1971	# all this does is basically replace the /! path by
		1972	# a new random map path (?random/...) with a seed
		1973	# that depends on the exit object
		1974
		1975	my $rmp = parse_random_map_params $exit->msg;
		1976
		1977	if ($exit->map) {
		1978	$rmp->{region} = $exit->region->name;
		1979	$rmp->{origin_map} = $exit->map->path;
		1980	$rmp->{origin_x} = $exit->x;
		1981	$rmp->{origin_y} = $exit->y;
		1982	}
		1983
		1984	$rmp->{random_seed} ||= $exit->random_seed;
		1985
		1986	my $data = cf::to_json $rmp;
		1987	my $md5 = Digest::MD5::md5_hex $data;
		1988	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1989
		1990	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1991	aio_write $fh, 0, (length $data), $data, 0;
		1992	undef $fh;
		1993	aio_rename "$meta~", $meta;
		1994
		1995	$exit->slaying ("?random/$md5");
		1996	$exit->msg (undef);
		1997	}
		1998	}
		1999
		2000	sub cf::object::player::enter_exit {
		2001	my ($self, $exit) = @_;
		2002
		2003	return unless $self->type == cf::PLAYER;
		2004
		2005	if ($exit->slaying eq "/!") {
		2006	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2007	# the problem is that $exit might not survive long enough
		2008	# so it needs to be done right now, right here
		2009	cf::sync_job { prepare_random_map $exit };
		2010	}
		2011
		2012	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2013	my $hp = $exit->stats->hp;
		2014	my $sp = $exit->stats->sp;
		2015
		2016	$self->enter_link;
		2017
		2018	(async {
		2019	$self->deactivate_recursive; # just to be sure
		2020	unless (eval {
		2021	$self->goto ($slaying, $hp, $sp);
		2022
		2023	1;
		2024	}) {
		2025	$self->message ("Something went wrong deep within the crossfire server. "
		2026	. "I'll try to bring you back to the map you were before. "
		2027	. "Please report this to the dungeon master!",
		2028	cf::NDI_UNIQUE | cf::NDI_RED);
		2029
		2030	warn "ERROR in enter_exit: $@";
		2031	$self->leave_link;
		2032	}
		2033	})->prio (1);
		2034	}
		2035
		2036	=head3 cf::client
		2037
		2038	=over 4
		2039
		2040	=item $client->send_drawinfo ($text, $flags)
		2041
		2042	Sends a drawinfo packet to the client. Circumvents output buffering so
		2043	should not be used under normal circumstances.
		2044
		2045	=cut
		2046
		2047	sub cf::client::send_drawinfo {
		2048	my ($self, $text, $flags) = @_;
		2049
		2050	utf8::encode $text;
		2051	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2052	}
		2053
		2054	=item $client->ext_event ($type, %msg)
		2055
		2056	Sends an exti event to the client.
		2057
		2058	=cut
		2059
		2060	sub cf::client::ext_event($$%) {
762	my ($self, $id, %msg) = @_;	2061	my ($self, $type, %msg) = @_;
763		2062
764	$msg{msgid} = $id;	2063	$msg{msgtype} = "event_$type";
765
766	$self->send ("ext " . to_json \%msg);	2064	$self->send_packet ("ext " . cf::to_json \%msg);
767	}	2065	}
768		2066
769	#############################################################################	2067	=item $success = $client->query ($flags, "text", \&cb)
770	# map scripting support	2068
		2069	Queues a query to the client, calling the given callback with
		2070	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2071	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2072
		2073	Queries can fail, so check the return code. Or don't, as queries will become
		2074	reliable at some point in the future.
		2075
		2076	=cut
		2077
		2078	sub cf::client::query {
		2079	my ($self, $flags, $text, $cb) = @_;
		2080
		2081	return unless $self->state == ST_PLAYING
		2082	|| $self->state == ST_SETUP
		2083	|| $self->state == ST_CUSTOM;
		2084
		2085	$self->state (ST_CUSTOM);
		2086
		2087	utf8::encode $text;
		2088	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2089
		2090	$self->send_packet ($self->{query_queue}[0][0])
		2091	if @{ $self->{query_queue} } == 1;
		2092	}
		2093
		2094	cf::client->attach (
		2095	on_reply => sub {
		2096	my ($ns, $msg) = @_;
		2097
		2098	# this weird shuffling is so that direct followup queries
		2099	# get handled first
		2100	my $queue = delete $ns->{query_queue}
		2101	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2102
		2103	(shift @$queue)->[1]->($msg);
		2104	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2105
		2106	push @{ $ns->{query_queue} }, @$queue;
		2107
		2108	if (@{ $ns->{query_queue} } == @$queue) {
		2109	if (@$queue) {
		2110	$ns->send_packet ($ns->{query_queue}[0][0]);
		2111	} else {
		2112	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2113	}
		2114	}
		2115	},
		2116	);
		2117
		2118	=item $client->async (\&cb)
		2119
		2120	Create a new coroutine, running the specified callback. The coroutine will
		2121	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2122	or loss of connection).
		2123
		2124	=cut
		2125
		2126	sub cf::client::async {
		2127	my ($self, $cb) = @_;
		2128
		2129	my $coro = &Coro::async ($cb);
		2130
		2131	$coro->on_destroy (sub {
		2132	delete $self->{_coro}{$coro+0};
		2133	});
		2134
		2135	$self->{_coro}{$coro+0} = $coro;
		2136
		2137	$coro
		2138	}
		2139
		2140	cf::client->attach (
		2141	on_destroy => sub {
		2142	my ($ns) = @_;
		2143
		2144	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2145	},
		2146	);
		2147
		2148	=back
		2149
		2150
		2151	=head2 SAFE SCRIPTING
		2152
		2153	Functions that provide a safe environment to compile and execute
		2154	snippets of perl code without them endangering the safety of the server
		2155	itself. Looping constructs, I/O operators and other built-in functionality
		2156	is not available in the safe scripting environment, and the number of
		2157	functions and methods that can be called is greatly reduced.
		2158
		2159	=cut
771		2160
772	our $safe = new Safe "safe";	2161	our $safe = new Safe "safe";
773	our $safe_hole = new Safe::Hole;	2162	our $safe_hole = new Safe::Hole;
774		2163
775	$SIG{FPE} = 'IGNORE';	2164	$SIG{FPE} = 'IGNORE';
776		2165
777	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2166	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
778		2167
779	# here we export the classes and methods available to script code	2168	# here we export the classes and methods available to script code
780		2169
		2170	=pod
		2171
		2172	The following functions and methods are available within a safe environment:
		2173
		2174	cf::object contr pay_amount pay_player map
		2175	cf::object::player player
		2176	cf::player peaceful
		2177	cf::map trigger
		2178
		2179	=cut
		2180
781	for (	2181	for (
782	["cf::object" => qw(contr pay_amount pay_player)],	2182	["cf::object" => qw(contr pay_amount pay_player map)],
783	["cf::object::player" => qw(player)],	2183	["cf::object::player" => qw(player)],
784	["cf::player" => qw(peaceful)],	2184	["cf::player" => qw(peaceful)],
		2185	["cf::map" => qw(trigger)],
785	) {	2186	) {
786	no strict 'refs';	2187	no strict 'refs';
787	my ($pkg, @funs) = @$_;	2188	my ($pkg, @funs) = @$_;
788	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2189	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
789	for @funs;	2190	for @funs;
790	}	2191	}
		2192
		2193	=over 4
		2194
		2195	=item @retval = safe_eval $code, [var => value, ...]
		2196
		2197	Compiled and executes the given perl code snippet. additional var/value
		2198	pairs result in temporary local (my) scalar variables of the given name
		2199	that are available in the code snippet. Example:
		2200
		2201	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2202
		2203	=cut
791		2204
792	sub safe_eval($;@) {	2205	sub safe_eval($;@) {
793	my ($code, %vars) = @_;	2206	my ($code, %vars) = @_;
794		2207
795	my $qcode = $code;	2208	my $qcode = $code;
…		…
818	}	2231	}
819		2232
820	wantarray ? @res : $res[0]	2233	wantarray ? @res : $res[0]
821	}	2234	}
822		2235
		2236	=item cf::register_script_function $function => $cb
		2237
		2238	Register a function that can be called from within map/npc scripts. The
		2239	function should be reasonably secure and should be put into a package name
		2240	like the extension.
		2241
		2242	Example: register a function that gets called whenever a map script calls
		2243	C<rent::overview>, as used by the C<rent> extension.
		2244
		2245	cf::register_script_function "rent::overview" => sub {
		2246	...
		2247	};
		2248
		2249	=cut
		2250
823	sub register_script_function {	2251	sub register_script_function {
824	my ($fun, $cb) = @_;	2252	my ($fun, $cb) = @_;
825		2253
826	no strict 'refs';	2254	no strict 'refs';
827	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2255	*{"safe::$fun"} = $safe_hole->wrap ($cb);
828	}	2256	}
829		2257
		2258	=back
		2259
		2260	=cut
		2261
830	#############################################################################	2262	#############################################################################
831	# the server's main()	2263
		2264	=head2 EXTENSION DATABASE SUPPORT
		2265
		2266	Crossfire maintains a very simple database for extension use. It can
		2267	currently store anything that can be serialised using Storable, which
		2268	excludes objects.
		2269
		2270	The parameter C<$family> should best start with the name of the extension
		2271	using it, it should be unique.
		2272
		2273	=over 4
		2274
		2275	=item $value = cf::db_get $family => $key
		2276
		2277	Returns a single value from the database.
		2278
		2279	=item cf::db_put $family => $key => $value
		2280
		2281	Stores the given C<$value> in the family.
		2282
		2283	=cut
		2284
		2285	our $DB;
		2286
		2287	sub db_init {
		2288	unless ($DB) {
		2289	$DB = BDB::db_create $DB_ENV;
		2290
		2291	cf::sync_job {
		2292	eval {
		2293	$DB->set_flags (BDB::CHKSUM);
		2294
		2295	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2296	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2297	cf::cleanup "db_open(db): $!" if $!;
		2298	};
		2299	cf::cleanup "db_open(db): $@" if $@;
		2300	};
		2301
		2302	my $path = cf::localdir . "/database.pst";
		2303	if (stat $path) {
		2304	cf::sync_job {
		2305	my $pst = Storable::retrieve $path;
		2306
		2307	cf::db_put (board => data => $pst->{board});
		2308	cf::db_put (guildrules => data => $pst->{guildrules});
		2309	cf::db_put (rent => balance => $pst->{rent}{balance});
		2310	BDB::db_env_txn_checkpoint $DB_ENV;
		2311
		2312	unlink $path;
		2313	};
		2314	}
		2315	}
		2316	}
		2317
		2318	sub db_get($$) {
		2319	my $key = "$_[0]/$_[1]";
		2320
		2321	cf::sync_job {
		2322	BDB::db_get $DB, undef, $key, my $data;
		2323
		2324	$! ? ()
		2325	: Compress::LZF::sthaw $data
		2326	}
		2327	}
		2328
		2329	sub db_put($$$) {
		2330	BDB::dbreq_pri 4;
		2331	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2332	}
		2333
		2334	#############################################################################
		2335	# the server's init and main functions
		2336
		2337	sub load_facedata($) {
		2338	my ($path) = @_;
		2339
		2340	warn "loading facedata from $path\n";
		2341
		2342	my $facedata;
		2343	0 < aio_load $path, $facedata
		2344	or die "$path: $!";
		2345
		2346	$facedata = Coro::Storable::thaw $facedata;
		2347
		2348	$facedata->{version} == 2
		2349	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2350
		2351	{
		2352	my $faces = $facedata->{faceinfo};
		2353
		2354	while (my ($face, $info) = each %$faces) {
		2355	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2356	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2357	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2358	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2359	Coro::cede;
		2360	}
		2361
		2362	while (my ($face, $info) = each %$faces) {
		2363	next unless $info->{smooth};
		2364	my $idx = cf::face::find $face
		2365	or next;
		2366	if (my $smooth = cf::face::find $info->{smooth}) {
		2367	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2368	} else {
		2369	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2370	}
		2371	Coro::cede;
		2372	}
		2373	}
		2374
		2375	{
		2376	my $anims = $facedata->{animinfo};
		2377
		2378	while (my ($anim, $info) = each %$anims) {
		2379	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2380	Coro::cede;
		2381	}
		2382
		2383	cf::anim::invalidate_all; # d'oh
		2384	}
		2385
		2386	1
		2387	}
		2388
		2389	sub reload_facedata {
		2390	load_facedata sprintf "%s/facedata", cf::datadir
		2391	or die "unable to load facedata\n";
		2392	}
		2393
		2394	sub reload_regions {
		2395	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2396	or die "unable to load regions file\n";
		2397	}
		2398
		2399	sub reload_archetypes {
		2400	load_archetype_file sprintf "%s/archetypes", cf::datadir
		2401	or die "unable to load archetypes\n";
		2402	}
		2403
		2404	sub reload_treasures {
		2405	load_treasure_file sprintf "%s/treasures", cf::datadir
		2406	or die "unable to load treasurelists\n";
		2407	}
		2408
		2409	sub reload_resources {
		2410	warn "reloading resource files...\n";
		2411
		2412	reload_regions;
		2413	reload_facedata;
		2414	reload_archetypes;
		2415	reload_treasures;
		2416
		2417	warn "finished reloading resource files\n";
		2418	}
		2419
		2420	sub init {
		2421	reload_resources;
		2422	}
		2423
		2424	sub cfg_load {
		2425	open my $fh, "<:utf8", cf::confdir . "/config"
		2426	or return;
		2427
		2428	local $/;
		2429	*CFG = YAML::Syck::Load <$fh>;
		2430
		2431	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2432
		2433	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2434	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2435
		2436	if (exists $CFG{mlockall}) {
		2437	eval {
		2438	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2439	and die "WARNING: m(un)lockall failed: $!\n";
		2440	};
		2441	warn $@ if $@;
		2442	}
		2443	}
832		2444
833	sub main {	2445	sub main {
		2446	# we must not ever block the main coroutine
		2447	local $Coro::idle = sub {
		2448	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2449	(async {
		2450	Event::one_event;
		2451	})->prio (Coro::PRIO_MAX);
		2452	};
		2453
		2454	cfg_load;
		2455	db_init;
		2456	load_extensions;
		2457
		2458	$TICK_WATCHER->start;
834	Event::loop;	2459	Event::loop;
835	}	2460	}
836		2461
837	#############################################################################	2462	#############################################################################
838	# initialisation	2463	# initialisation and cleanup
839		2464
840	register "<global>", __PACKAGE__;	2465	# install some emergency cleanup handlers
		2466	BEGIN {
		2467	for my $signal (qw(INT HUP TERM)) {
		2468	Event->signal (
		2469	reentrant => 0,
		2470	data => WF_AUTOCANCEL,
		2471	signal => $signal,
		2472	prio => 0,
		2473	cb => sub {
		2474	cf::cleanup "SIG$signal";
		2475	},
		2476	);
		2477	}
		2478	}
		2479
		2480	sub emergency_save() {
		2481	my $freeze_guard = cf::freeze_mainloop;
		2482
		2483	warn "enter emergency perl save\n";
		2484
		2485	cf::sync_job {
		2486	# use a peculiar iteration method to avoid tripping on perl
		2487	# refcount bugs in for. also avoids problems with players
		2488	# and maps saved/destroyed asynchronously.
		2489	warn "begin emergency player save\n";
		2490	for my $login (keys %cf::PLAYER) {
		2491	my $pl = $cf::PLAYER{$login} or next;
		2492	$pl->valid or next;
		2493	$pl->save;
		2494	}
		2495	warn "end emergency player save\n";
		2496
		2497	warn "begin emergency map save\n";
		2498	for my $path (keys %cf::MAP) {
		2499	my $map = $cf::MAP{$path} or next;
		2500	$map->valid or next;
		2501	$map->save;
		2502	}
		2503	warn "end emergency map save\n";
		2504
		2505	warn "begin emergency database checkpoint\n";
		2506	BDB::db_env_txn_checkpoint $DB_ENV;
		2507	warn "end emergency database checkpoint\n";
		2508	};
		2509
		2510	warn "leave emergency perl save\n";
		2511	}
		2512
		2513	sub post_cleanup {
		2514	my ($make_core) = @_;
		2515
		2516	warn Carp::longmess "post_cleanup backtrace"
		2517	if $make_core;
		2518	}
		2519
		2520	sub do_reload_perl() {
		2521	# can/must only be called in main
		2522	if ($Coro::current != $Coro::main) {
		2523	warn "can only reload from main coroutine";
		2524	return;
		2525	}
		2526
		2527	warn "reloading...";
		2528
		2529	warn "entering sync_job";
		2530
		2531	cf::sync_job {
		2532	cf::write_runtime; # external watchdog should not bark
		2533	cf::emergency_save;
		2534	cf::write_runtime; # external watchdog should not bark
		2535
		2536	warn "syncing database to disk";
		2537	BDB::db_env_txn_checkpoint $DB_ENV;
		2538
		2539	# if anything goes wrong in here, we should simply crash as we already saved
		2540
		2541	warn "cancelling all WF_AUTOCANCEL watchers";
		2542	for (Event::all_watchers) {
		2543	$_->cancel if $_->data & WF_AUTOCANCEL;
		2544	}
		2545
		2546	warn "flushing outstanding aio requests";
		2547	for (;;) {
		2548	BDB::flush;
		2549	IO::AIO::flush;
		2550	Coro::cede;
		2551	last unless IO::AIO::nreqs || BDB::nreqs;
		2552	warn "iterate...";
		2553	}
		2554
		2555	++$RELOAD;
		2556
		2557	warn "cancelling all extension coros";
		2558	$_->cancel for values %EXT_CORO;
		2559	%EXT_CORO = ();
		2560
		2561	warn "removing commands";
		2562	%COMMAND = ();
		2563
		2564	warn "removing ext commands";
		2565	%EXTCMD = ();
		2566
		2567	warn "unloading/nuking all extensions";
		2568	for my $pkg (@EXTS) {
		2569	warn "... unloading $pkg";
		2570
		2571	if (my $cb = $pkg->can ("unload")) {
		2572	eval {
		2573	$cb->($pkg);
		2574	1
		2575	} or warn "$pkg unloaded, but with errors: $@";
		2576	}
		2577
		2578	warn "... nuking $pkg";
		2579	Symbol::delete_package $pkg;
		2580	}
		2581
		2582	warn "unloading all perl modules loaded from $LIBDIR";
		2583	while (my ($k, $v) = each %INC) {
		2584	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2585
		2586	warn "... unloading $k";
		2587	delete $INC{$k};
		2588
		2589	$k =~ s/\.pm$//;
		2590	$k =~ s/\//::/g;
		2591
		2592	if (my $cb = $k->can ("unload_module")) {
		2593	$cb->();
		2594	}
		2595
		2596	Symbol::delete_package $k;
		2597	}
		2598
		2599	warn "getting rid of safe::, as good as possible";
		2600	Symbol::delete_package "safe::$_"
		2601	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2602
		2603	warn "unloading cf.pm \"a bit\"";
		2604	delete $INC{"cf.pm"};
		2605
		2606	# don't, removes xs symbols, too,
		2607	# and global variables created in xs
		2608	#Symbol::delete_package __PACKAGE__;
		2609
		2610	warn "unload completed, starting to reload now";
		2611
		2612	warn "reloading cf.pm";
		2613	require cf;
		2614	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2615
		2616	warn "loading config and database again";
		2617	cf::cfg_load;
		2618
		2619	warn "loading extensions";
		2620	cf::load_extensions;
		2621
		2622	warn "reattaching attachments to objects/players";
		2623	_global_reattach; # objects, sockets
		2624	warn "reattaching attachments to maps";
		2625	reattach $_ for values %MAP;
		2626	warn "reattaching attachments to players";
		2627	reattach $_ for values %PLAYER;
		2628
		2629	warn "leaving sync_job";
		2630
		2631	1
		2632	} or do {
		2633	warn $@;
		2634	warn "error while reloading, exiting.";
		2635	exit 1;
		2636	};
		2637
		2638	warn "reloaded";
		2639	};
		2640
		2641	our $RELOAD_WATCHER; # used only during reload
		2642
		2643	sub reload_perl() {
		2644	# doing reload synchronously and two reloads happen back-to-back,
		2645	# coro crashes during coro_state_free->destroy here.
		2646
		2647	$RELOAD_WATCHER ||= Event->timer (
		2648	reentrant => 0,
		2649	after => 0,
		2650	data => WF_AUTOCANCEL,
		2651	cb => sub {
		2652	do_reload_perl;
		2653	undef $RELOAD_WATCHER;
		2654	},
		2655	);
		2656	}
		2657
		2658	register_command "reload" => sub {
		2659	my ($who, $arg) = @_;
		2660
		2661	if ($who->flag (FLAG_WIZ)) {
		2662	$who->message ("reloading server.");
		2663	async { reload_perl };
		2664	}
		2665	};
841		2666
842	unshift @INC, $LIBDIR;	2667	unshift @INC, $LIBDIR;
843		2668
844	load_extensions;	2669	my $bug_warning = 0;
		2670
		2671	our @WAIT_FOR_TICK;
		2672	our @WAIT_FOR_TICK_BEGIN;
		2673
		2674	sub wait_for_tick {
		2675	return unless $TICK_WATCHER->is_active;
		2676	return if $Coro::current == $Coro::main;
		2677
		2678	my $signal = new Coro::Signal;
		2679	push @WAIT_FOR_TICK, $signal;
		2680	$signal->wait;
		2681	}
		2682
		2683	sub wait_for_tick_begin {
		2684	return unless $TICK_WATCHER->is_active;
		2685	return if $Coro::current == $Coro::main;
		2686
		2687	my $signal = new Coro::Signal;
		2688	push @WAIT_FOR_TICK_BEGIN, $signal;
		2689	$signal->wait;
		2690	}
845		2691
846	$TICK_WATCHER = Event->timer (	2692	$TICK_WATCHER = Event->timer (
		2693	reentrant => 0,
		2694	parked => 1,
847	prio => 1,	2695	prio => 0,
848	at => $NEXT_TICK || 1,	2696	at => $NEXT_TICK || $TICK,
		2697	data => WF_AUTOCANCEL,
849	cb => sub {	2698	cb => sub {
		2699	if ($Coro::current != $Coro::main) {
		2700	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2701	unless ++$bug_warning > 10;
		2702	return;
		2703	}
		2704
		2705	$NOW = Event::time;
		2706
850	cf::server_tick; # one server iteration	2707	cf::server_tick; # one server iteration
851		2708
852	my $NOW = Event::time;	2709	$RUNTIME += $TICK;
853	$NEXT_TICK += $TICK;	2710	$NEXT_TICK += $TICK;
854		2711
		2712	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2713	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2714	Coro::async_pool {
		2715	write_runtime
		2716	or warn "ERROR: unable to write runtime file: $!";
		2717	};
		2718	}
		2719
		2720	# my $AFTER = Event::time;
		2721	# warn $AFTER - $NOW;#d#
		2722
855	# if we are delayed by four ticks, skip them all	2723	# if we are delayed by four ticks or more, skip them all
856	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2724	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
857		2725
858	$TICK_WATCHER->at ($NEXT_TICK);	2726	$TICK_WATCHER->at ($NEXT_TICK);
859	$TICK_WATCHER->start;	2727	$TICK_WATCHER->start;
		2728
		2729	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2730	$sig->send;
		2731	}
		2732	while (my $sig = shift @WAIT_FOR_TICK) {
		2733	$sig->send;
		2734	}
		2735
		2736	_post_tick;
860	},	2737	},
861	);	2738	);
862		2739
863	_reload_2;	2740	{
		2741	BDB::max_poll_time $TICK * 0.1;
		2742	$BDB_POLL_WATCHER = Event->io (
		2743	reentrant => 0,
		2744	fd => BDB::poll_fileno,
		2745	poll => 'r',
		2746	prio => 0,
		2747	data => WF_AUTOCANCEL,
		2748	cb => \&BDB::poll_cb,
		2749	);
		2750	BDB::min_parallel 8;
		2751
		2752	BDB::set_sync_prepare {
		2753	my $status;
		2754	my $current = $Coro::current;
		2755	(
		2756	sub {
		2757	$status = $!;
		2758	$current->ready; undef $current;
		2759	},
		2760	sub {
		2761	Coro::schedule while defined $current;
		2762	$! = $status;
		2763	},
		2764	)
		2765	};
		2766
		2767	unless ($DB_ENV) {
		2768	$DB_ENV = BDB::db_env_create;
		2769
		2770	cf::sync_job {
		2771	eval {
		2772	BDB::db_env_open
		2773	$DB_ENV,
		2774	$BDB_ENV_DIR,
		2775	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2776	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2777	0666;
		2778
		2779	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2780
		2781	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2782	$DB_ENV->set_lk_detect;
		2783	};
		2784
		2785	cf::cleanup "db_env_open(db): $@" if $@;
		2786	};
		2787	}
		2788	}
		2789
		2790	{
		2791	IO::AIO::min_parallel 8;
		2792
		2793	undef $Coro::AIO::WATCHER;
		2794	IO::AIO::max_poll_time $TICK * 0.1;
		2795	$AIO_POLL_WATCHER = Event->io (
		2796	reentrant => 0,
		2797	data => WF_AUTOCANCEL,
		2798	fd => IO::AIO::poll_fileno,
		2799	poll => 'r',
		2800	prio => 6,
		2801	cb => \&IO::AIO::poll_cb,
		2802	);
		2803	}
		2804
		2805	END { cf::emergency_save }
864		2806
865	1	2807	1
866		2808

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