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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.225 by root, Wed Mar 14 00:04:58 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 3.52 ();
		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
		22	use BDB ();
		23	use Data::Dumper;
		24	use Digest::MD5;
		25	use Fcntl;
		26	use IO::AIO 2.32 ();
		27	use YAML::Syck ();
10	use Time::HiRes;	28	use Time::HiRes;
11	use Event;	29	use Compress::LZF;
		30
		31	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		32	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
12	$Event::Eval = 1; # no idea why this is required, but it is	33	$Event::Eval = 1; # no idea why this is required, but it is
13		34
14	use strict;	35	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		36
16	_reload_1;	37	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		38	$YAML::Syck::ImplicitUnicode = 1;
17		39
		40	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		41
18	our %COMMAND = ();	42	our %COMMAND = ();
		43	our %COMMAND_TIME = ();
		44
		45	our @EXTS = (); # list of extension package names
		46	our %EXTCMD = ();
		47	our %EXT_CORO = (); # coroutines bound to extensions
		48	our %EXT_MAP = (); # pluggable maps
		49
		50	our $RELOAD; # number of reloads so far
19	our @EVENT;	51	our @EVENT;
20	our %PROP_TYPE;	52	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		53
24	our $TICK = MAX_TIME * 1e-6;	54	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	55	our $TICK_WATCHER;
		56	our $AIO_POLL_WATCHER;
		57	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	58	our $NEXT_TICK;
		59	our $NOW;
		60	our $USE_FSYNC = 1; # use fsync to write maps - default off
		61
		62	our $BDB_POLL_WATCHER;
		63	our $DB_ENV;
		64
		65	our %CFG;
		66
		67	our $UPTIME; $UPTIME ||= time;
		68	our $RUNTIME;
		69
		70	our %PLAYER; # all users
		71	our %MAP; # all maps
		72	our $LINK_MAP; # the special {link} map, which is always available
		73	our $RANDOM_MAPS = cf::localdir . "/random";
		74	our $BDB_ENV_DIR = cf::localdir . "/db";
		75
		76	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		77	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		78
		79	# used to convert map paths into valid unix filenames by replacing / by ∕
		80	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		81
		82	binmode STDOUT;
		83	binmode STDERR;
		84
		85	# read virtual server time, if available
		86	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		87	open my $fh, "<", cf::localdir . "/runtime"
		88	or die "unable to read runtime file: $!";
		89	$RUNTIME = <$fh> + 0.;
		90	}
		91
		92	mkdir cf::localdir;
		93	mkdir cf::localdir . "/" . cf::playerdir;
		94	mkdir cf::localdir . "/" . cf::tmpdir;
		95	mkdir cf::localdir . "/" . cf::uniquedir;
		96	mkdir $RANDOM_MAPS;
		97	mkdir $BDB_ENV_DIR;
		98
		99	our $EMERGENCY_POSITION;
		100
		101	sub cf::map::normalise;
		102
		103	#############################################################################
		104
		105	=head2 GLOBAL VARIABLES
		106
		107	=over 4
		108
		109	=item $cf::UPTIME
		110
		111	The timestamp of the server start (so not actually an uptime).
		112
		113	=item $cf::RUNTIME
		114
		115	The time this server has run, starts at 0 and is increased by $cf::TICK on
		116	every server tick.
		117
		118	=item $cf::LIBDIR
		119
		120	The perl library directory, where extensions and cf-specific modules can
		121	be found. It will be added to C<@INC> automatically.
		122
		123	=item $cf::NOW
		124
		125	The time of the last (current) server tick.
		126
		127	=item $cf::TICK
		128
		129	The interval between server ticks, in seconds.
		130
		131	=item %cf::CFG
		132
		133	Configuration for the server, loaded from C</etc/crossfire/config>, or
		134	from wherever your confdir points to.
		135
		136	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		137
		138	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		139	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		140	processing has been done. Call C<< ->wait >> on them to maximise the
		141	window of cpu time available, or simply to synchronise to the server tick.
		142
		143	=back
		144
		145	=cut
27		146
28	BEGIN {	147	BEGIN {
29	*CORE::GLOBAL::warn = sub {	148	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	149	my $msg = join "", @_;
		150	utf8::encode $msg;
		151
31	$msg .= "\n"	152	$msg .= "\n"
32	unless $msg =~ /\n$/;	153	unless $msg =~ /\n$/;
33		154
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	155	LOG llevError, $msg;
36	};	156	};
37	}	157	}
38		158
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	159	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		160	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	161	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	162	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	163	@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';	164	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		165
75	# we bless all objects into (empty) derived classes to force a method lookup	166	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	167	# 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)) {	168	for my $pkg (qw(
		169	cf::global cf::attachable
		170	cf::object cf::object::player
		171	cf::client cf::player
		172	cf::arch cf::living
		173	cf::map cf::party cf::region
		174	)) {
78	no strict 'refs';	175	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	176	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	177	}
81		178
82	$Event::DIED = sub {	179	$Event::DIED = sub {
83	warn "error in event callback: @_";	180	warn "error in event callback: @_";
84	};	181	};
85		182
86	my %ext_pkg;	183	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		184
92	#############################################################################	185	=over 4
93	# utility functions	186
		187	=item dumpval $ref
		188
		189	=cut
		190
		191	sub dumpval {
		192	eval {
		193	local $SIG{__DIE__};
		194	my $d;
		195	if (1) {
		196	$d = new Data::Dumper([$_[0]], ["*var"]);
		197	$d->Terse(1);
		198	$d->Indent(2);
		199	$d->Quotekeys(0);
		200	$d->Useqq(1);
		201	#$d->Bless(...);
		202	$d->Seen($_[1]) if @_ > 1;
		203	$d = $d->Dump();
		204	}
		205	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		206	$d
		207	} || "[unable to dump $_[0]: '$@']";
		208	}
94		209
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	210	use JSON::Syck (); # TODO# replace by JSON::PC once working
		211
		212	=item $ref = cf::from_json $json
		213
		214	Converts a JSON string into the corresponding perl data structure.
		215
		216	=cut
96		217
97	sub from_json($) {	218	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	219	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	220	JSON::Syck::Load $_[0]
100	}	221	}
101		222
		223	=item $json = cf::to_json $ref
		224
		225	Converts a perl data structure into its JSON representation.
		226
		227	=cut
		228
102	sub to_json($) {	229	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	230	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	231	JSON::Syck::Dump $_[0]
105	}	232	}
106		233
		234	=item cf::lock_wait $string
		235
		236	Wait until the given lock is available. See cf::lock_acquire.
		237
		238	=item my $lock = cf::lock_acquire $string
		239
		240	Wait until the given lock is available and then acquires it and returns
		241	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		242	for example when the coroutine gets canceled), the lock is automatically
		243	returned.
		244
		245	Lock names should begin with a unique identifier (for example, cf::map::find
		246	uses map_find and cf::map::load uses map_load).
		247
		248	=cut
		249
		250	our %LOCK;
		251
		252	sub lock_wait($) {
		253	my ($key) = @_;
		254
		255	# wait for lock, if any
		256	while ($LOCK{$key}) {
		257	push @{ $LOCK{$key} }, $Coro::current;
		258	Coro::schedule;
		259	}
		260	}
		261
		262	sub lock_acquire($) {
		263	my ($key) = @_;
		264
		265	# wait, to be sure we are not locked
		266	lock_wait $key;
		267
		268	$LOCK{$key} = [];
		269
		270	Coro::guard {
		271	# wake up all waiters, to be on the safe side
		272	$_->ready for @{ delete $LOCK{$key} };
		273	}
		274	}
		275
		276	sub freeze_mainloop {
		277	return unless $TICK_WATCHER->is_active;
		278
		279	my $guard = Coro::guard {
		280	$TICK_WATCHER->start;
		281	};
		282	$TICK_WATCHER->stop;
		283	$guard
		284	}
		285
		286	=item cf::async { BLOCK }
		287
		288	Currently the same as Coro::async_pool, meaning you cannot use
		289	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		290	thing you are allowed to do is call C<prio> on it.
		291
		292	=cut
		293
		294	BEGIN { *async = \&Coro::async_pool }
		295
		296	=item cf::sync_job { BLOCK }
		297
		298	The design of crossfire+ requires that the main coro ($Coro::main) is
		299	always able to handle events or runnable, as crossfire+ is only partly
		300	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		301
		302	If it must be done, put the blocking parts into C<sync_job>. This will run
		303	the given BLOCK in another coroutine while waiting for the result. The
		304	server will be frozen during this time, so the block should either finish
		305	fast or be very important.
		306
		307	=cut
		308
		309	sub sync_job(&) {
		310	my ($job) = @_;
		311
		312	if ($Coro::current == $Coro::main) {
		313	# this is the main coro, too bad, we have to block
		314	# till the operation succeeds, freezing the server :/
		315
		316	# TODO: use suspend/resume instead
		317	# (but this is cancel-safe)
		318	my $freeze_guard = freeze_mainloop;
		319
		320	my $busy = 1;
		321	my @res;
		322
		323	(async {
		324	@res = eval { $job->() };
		325	warn $@ if $@;
		326	undef $busy;
		327	})->prio (Coro::PRIO_MAX);
		328
		329	while ($busy) {
		330	Coro::cede or Event::one_event;
		331	}
		332
		333	wantarray ? @res : $res[0]
		334	} else {
		335	# we are in another coroutine, how wonderful, everything just works
		336
		337	$job->()
		338	}
		339	}
		340
		341	=item $coro = cf::async_ext { BLOCK }
		342
		343	Like async, but this coro is automatically being canceled when the
		344	extension calling this is being unloaded.
		345
		346	=cut
		347
		348	sub async_ext(&) {
		349	my $cb = shift;
		350
		351	my $coro = &Coro::async ($cb);
		352
		353	$coro->on_destroy (sub {
		354	delete $EXT_CORO{$coro+0};
		355	});
		356	$EXT_CORO{$coro+0} = $coro;
		357
		358	$coro
		359	}
		360
		361	sub write_runtime {
		362	my $guard = cf::lock_acquire "write_runtime";
		363
		364	my $runtime = cf::localdir . "/runtime";
		365
		366	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		367	or return;
		368
		369	my $value = $cf::RUNTIME + 90 + 10;
		370	# 10 is the runtime save interval, for a monotonic clock
		371	# 60 allows for the watchdog to kill the server.
		372
		373	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		374	and return;
		375
		376	# always fsync - this file is important
		377	aio_fsync $fh
		378	and return;
		379
		380	close $fh
		381	or return;
		382
		383	aio_rename "$runtime~", $runtime
		384	and return;
		385
		386	1
		387	}
		388
		389	=back
		390
		391	=cut
		392
107	#############################################################################	393	#############################################################################
108	# "new" plug-in system
109		394
		395	=head2 ATTACHABLE OBJECTS
		396
		397	Many objects in crossfire are so-called attachable objects. That means you can
		398	attach callbacks/event handlers (a collection of which is called an "attachment")
		399	to it. All such attachable objects support the following methods.
		400
		401	In the following description, CLASS can be any of C<global>, C<object>
		402	C<player>, C<client> or C<map> (i.e. the attachable objects in
		403	crossfire+).
		404
		405	=over 4
		406
110	=item $object->attach ($attachment, key => $value...)	407	=item $attachable->attach ($attachment, key => $value...)
111		408
112	Attach a pre-registered attachment to an object.	409	=item $attachable->detach ($attachment)
113		410
114	=item $player->attach ($attachment, key => $value...)	411	Attach/detach a pre-registered attachment to a specific object and give it
		412	the specified key/value pairs as arguments.
115		413
116	Attach a pre-registered attachment to a player.	414	Example, attach a minesweeper attachment to the given object, making it a
		415	10x10 minesweeper game:
117		416
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	417	$obj->attach (minesweeper => width => 10, height => 10);
119		418
120	Attach a pre-registered attachment to a map.	419	=item $bool = $attachable->attached ($name)
121		420
122	=item cf::attach_global ...	421	Checks wether the named attachment is currently attached to the object.
123		422
124	Attach handlers for global events.	423	=item cf::CLASS->attach ...
125		424
126	This and all following C<attach_*>-functions expect any number of the	425	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	426
		427	Define an anonymous attachment and attach it to all objects of the given
		428	CLASS. See the next function for an explanation of its arguments.
		429
		430	You can attach to global events by using the C<cf::global> class.
		431
		432	Example, log all player logins:
		433
		434	cf::player->attach (
		435	on_login => sub {
		436	my ($pl) = @_;
		437	...
		438	},
		439	);
		440
		441	Example, attach to the jeweler skill:
		442
		443	cf::object->attach (
		444	type => cf::SKILL,
		445	subtype => cf::SK_JEWELER,
		446	on_use_skill => sub {
		447	my ($sk, $ob, $part, $dir, $msg) = @_;
		448	...
		449	},
		450	);
		451
		452	=item cf::CLASS::attachment $name, ...
		453
		454	Register an attachment by C<$name> through which attachable objects of the
		455	given CLASS can refer to this attachment.
		456
		457	Some classes such as crossfire maps and objects can specify attachments
		458	that are attached at load/instantiate time, thus the need for a name.
		459
		460	These calls expect any number of the following handler/hook descriptions:
128		461
129	=over 4	462	=over 4
130		463
131	=item prio => $number	464	=item prio => $number
132		465
…		…
134	by another C<prio> setting). Lower priority handlers get executed	467	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	468	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	469	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	470	unless you know what you are doing.
138		471
		472	=item type => $type
		473
		474	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		475	given type of objects only (the additional parameter C<subtype> can be
		476	used to further limit to the given subtype).
		477
139	=item on_I<event> => \&cb	478	=item on_I<event> => \&cb
140		479
141	Call the given code reference whenever the named event happens (event is	480	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	481	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	482	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	491	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	492	object/class are recognised.
154		493
155	=back	494	=back
156		495
157	=item cf::attach_to_type $object_type, $subtype, ...	496	Example, define an attachment called "sockpuppet" that calls the given
		497	event handler when a monster attacks:
158		498
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	499	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	500	on_skill_attack => sub {
161	type.	501	my ($self, $victim) = @_;
		502	...
		503	}
		504	}
162		505
163	=item cf::attach_to_objects ...	506	=item $attachable->valid
164		507
165	Attach handlers to all objects. Do not use this except for debugging or	508	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	509	C-level object still exists. If you try to access an object that has no
167	the game.	510	valid C counterpart anymore you get an exception at runtime. This method
168		511	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	512	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		513
179	=cut	514	=cut
180		515
181	# the following variables are defined in .xs and must not be re-created	516	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	517	our @CB_GLOBAL = (); # registry for all global events
		518	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	519	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	520	our @CB_PLAYER = ();
		521	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	522	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	523	our @CB_MAP = ();
187		524
188	my %attachment;	525	my %attachment;
189		526
		527	sub cf::attachable::thawer_merge {
		528	# simply override everything except _meta
		529	local $_[0]{_meta};
		530	%{$_[0]} = %{$_[1]};
		531	}
		532
190	sub _attach_cb($\%$$$) {	533	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	534	my ($registry, $event, $prio, $cb) = @_;
192		535
193	use sort 'stable';	536	use sort 'stable';
194		537
195	$cb = [$prio, $cb];	538	$cb = [$prio, $cb];
196		539
197	@{$registry->[$event]} = sort	540	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	541	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	542	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	543	}
		544
		545	# hack
		546	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		547
204	# attach handles attaching event callbacks	548	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	549	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	550	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	551	sub _attach {
208	my ($registry, $klass, @arg) = @_;	552	my ($registry, $klass, @arg) = @_;
209		553
		554	my $object_type;
210	my $prio = 0;	555	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;	556	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		557
		558	#TODO: get rid of this hack
		559	if ($attachable_klass{$klass}) {
		560	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		561	}
218		562
219	while (@arg) {	563	while (@arg) {
220	my $type = shift @arg;	564	my $type = shift @arg;
221		565
222	if ($type eq "prio") {	566	if ($type eq "prio") {
223	$prio = shift @arg;	567	$prio = shift @arg;
224		568
		569	} elsif ($type eq "type") {
		570	$object_type = shift @arg;
		571	$registry = $CB_TYPE[$object_type] ||= [];
		572
		573	} elsif ($type eq "subtype") {
		574	defined $object_type or Carp::croak "subtype specified without type";
		575	my $object_subtype = shift @arg;
		576	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		577
225	} elsif ($type eq "package") {	578	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	579	my $pkg = shift @arg;
227		580
228	while (my ($name, $id) = each %cb_id) {	581	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	582	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	583	_attach_cb $registry, $id, $prio, $cb;
231	}	584	}
232	}	585	}
233		586
234	} elsif (exists $cb_id{$type}) {	587	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	588	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		589
237	} elsif (ref $type) {	590	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	591	warn "attaching objects not supported, ignoring.\n";
239		592
240	} else {	593	} else {
241	shift @arg;	594	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	595	warn "attach argument '$type' not supported, ignoring.\n";
243	}	596	}
244	}	597	}
245
246	\%undo
247	}	598	}
248		599
249	sub _attach_attachment {	600	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	601	my ($obj, $name, %arg) = @_;
251		602
252	my $res;	603	return if exists $obj->{_attachment}{$name};
253		604
254	if (my $attach = $attachment{$name}) {	605	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	606	my $registry = $obj->registry;
256		607
257	for (@$attach) {	608	for (@$attach) {
258	my ($klass, @attach) = @$_;	609	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	610	_attach $registry, $klass, @attach;
260	}	611	}
261		612
262	$obj->{$name} = \%arg;	613	$obj->{$name} = \%arg;
263	} else {	614	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	615	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	616	}
266		617
267	$obj->{_attachment}{$name} = undef;	618	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	619	}
272		620
273	sub cf::object::attach {	621	sub cf::attachable::attach {
		622	if (ref $_[0]) {
		623	_object_attach @_;
		624	} else {
		625	_attach shift->_attach_registry, @_;
		626	}
		627	};
		628
		629	# all those should be optimised
		630	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	631	my ($obj, $name) = @_;
275		632
276	_attach_attachment $obj, $name, %arg;	633	if (ref $obj) {
277	}	634	delete $obj->{_attachment}{$name};
		635	reattach ($obj);
		636	} else {
		637	Carp::croak "cannot, currently, detach class attachments";
		638	}
		639	};
278		640
279	sub cf::player::attach {	641	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	642	my ($obj, $name) = @_;
281		643
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	644	exists $obj->{_attachment}{$name}
283	}	645	}
284		646
285	sub cf::map::attach {	647	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	648	eval "#line " . __LINE__ . " 'cf.pm'
		649	sub cf::\L$klass\E::_attach_registry {
		650	(\\\@CB_$klass, KLASS_$klass)
		651	}
287		652
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	653	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;	654	my \$name = shift;
316		655
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	656	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		657	}
		658	";
		659	die if $@;
318	}	660	}
319		661
320	our $override;	662	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	663	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		664
…		…
336	for (@$callbacks) {	678	for (@$callbacks) {
337	eval { &{$_->[1]} };	679	eval { &{$_->[1]} };
338		680
339	if ($@) {	681	if ($@) {
340	warn "$@";	682	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	683	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	684	override;
343	}	685	}
344		686
345	return 1 if $override;	687	return 1 if $override;
346	}	688	}
347		689
348	0	690	0
349	}	691	}
		692
		693	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		694
		695	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		696
		697	Generate an object-specific event with the given arguments.
		698
		699	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		700	removed in future versions), and there is no public API to access override
		701	results (if you must, access C<@cf::invoke_results> directly).
		702
		703	=back
		704
		705	=cut
350		706
351	#############################################################################	707	#############################################################################
352	# object support	708	# object support
353		709
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 {	710	sub reattach {
		711	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	712	my ($obj) = @_;
		713
		714	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		715
369	my $registry = $obj->registry;	716	my $registry = $obj->registry;
370		717
371	@$registry = ();	718	@$registry = ();
372		719
373	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	720	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		721
375	for my $name (keys %{ $obj->{_attachment} || {} }) {	722	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	723	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	724	for (@$attach) {
378	my ($klass, @attach) = @$_;	725	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	726	_attach $registry, $klass, @attach;
380	}	727	}
381	} else {	728	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	729	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	730	}
384	}	731	}
385	}	732	}
386		733
387	sub object_freezer_save {	734	cf::attachable->attach (
388	my ($filename, $objs) = @_;
389
390	if (@$objs) {
391	open my $fh, ">:raw", "$filename.pst~";
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;
394	chmod SAVE_MODE, "$filename.pst~";
395	rename "$filename.pst~", "$filename.pst";
396	} else {
397	unlink "$filename.pst";
398	}
399
400	chmod SAVE_MODE, "$filename~";
401	rename "$filename~", $filename;
402	}
403
404	sub object_thawer_load {
405	my ($filename) = @_;
406
407	open my $fh, "<:raw:perlio", "$filename.pst"
408	or return;
409
410	eval { local $/; (Storable::thaw <$fh>)->{objs} }
411	}
412
413	attach_to_objects
414	prio => -1000000,	735	prio => -1000000,
		736	on_instantiate => sub {
		737	my ($obj, $data) = @_;
		738
		739	$data = from_json $data;
		740
		741	for (@$data) {
		742	my ($name, $args) = @$_;
		743
		744	$obj->attach ($name, %{$args || {} });
		745	}
		746	},
		747	on_reattach => \&reattach,
415	on_clone => sub {	748	on_clone => sub {
416	my ($src, $dst) = @_;	749	my ($src, $dst) = @_;
417		750
418	@{$dst->registry} = @{$src->registry};	751	@{$dst->registry} = @{$src->registry};
419		752
420	%$dst = %$src;	753	%$dst = %$src;
421		754
422	%{$dst->{_attachment}} = %{$src->{_attachment}}	755	%{$dst->{_attachment}} = %{$src->{_attachment}}
423	if exists $src->{_attachment};	756	if exists $src->{_attachment};
424	},	757	},
425	;	758	);
		759
		760	sub object_freezer_save {
		761	my ($filename, $rdata, $objs) = @_;
		762
		763	sync_job {
		764	if (length $$rdata) {
		765	warn sprintf "saving %s (%d,%d)\n",
		766	$filename, length $$rdata, scalar @$objs;
		767
		768	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		769	chmod SAVE_MODE, $fh;
		770	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		771	aio_fsync $fh if $cf::USE_FSYNC;
		772	close $fh;
		773
		774	if (@$objs) {
		775	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		776	chmod SAVE_MODE, $fh;
		777	my $data = Storable::nfreeze { version => 1, objs => $objs };
		778	aio_write $fh, 0, (length $data), $data, 0;
		779	aio_fsync $fh if $cf::USE_FSYNC;
		780	close $fh;
		781	aio_rename "$filename.pst~", "$filename.pst";
		782	}
		783	} else {
		784	aio_unlink "$filename.pst";
		785	}
		786
		787	aio_rename "$filename~", $filename;
		788	} else {
		789	warn "FATAL: $filename~: $!\n";
		790	}
		791	} else {
		792	aio_unlink $filename;
		793	aio_unlink "$filename.pst";
		794	}
		795	}
		796	}
		797
		798	sub object_freezer_as_string {
		799	my ($rdata, $objs) = @_;
		800
		801	use Data::Dumper;
		802
		803	$$rdata . Dumper $objs
		804	}
		805
		806	sub object_thawer_load {
		807	my ($filename) = @_;
		808
		809	my ($data, $av);
		810
		811	(aio_load $filename, $data) >= 0
		812	or return;
		813
		814	unless (aio_stat "$filename.pst") {
		815	(aio_load "$filename.pst", $av) >= 0
		816	or return;
		817	$av = eval { (Storable::thaw $av)->{objs} };
		818	}
		819
		820	warn sprintf "loading %s (%d)\n",
		821	$filename, length $data, scalar @{$av || []};#d#
		822	return ($data, $av);
		823	}
426		824
427	#############################################################################	825	#############################################################################
428	# old plug-in events	826	# command handling &c
429		827
430	sub inject_event {	828	=item cf::register_command $name => \&callback($ob,$args);
431	my $extension = shift;
432	my $event_code = shift;
433		829
434	my $cb = $hook[$event_code]{$extension}	830	Register a callback for execution when the client sends the user command
435	or return;	831	$name.
436		832
437	&$cb	833	=cut
438	}
439
440	sub inject_global_event {
441	my $event = shift;
442
443	my $cb = $hook[$event]
444	or return;
445
446	List::Util::max map &$_, values %$cb
447	}
448
449	sub inject_command {
450	my ($name, $obj, $params) = @_;
451
452	for my $cmd (@{ $command{$name} }) {
453	$cmd->[1]->($obj, $params);
454	}
455
456	-1
457	}
458		834
459	sub register_command {	835	sub register_command {
460	my ($name, $time, $cb) = @_;	836	my ($name, $cb) = @_;
461		837
462	my $caller = caller;	838	my $caller = caller;
463	#warn "registering command '$name/$time' to '$caller'";	839	#warn "registering command '$name/$time' to '$caller'";
464		840
465	push @{ $command{$name} }, [$time, $cb, $caller];	841	push @{ $COMMAND{$name} }, [$caller, $cb];
466	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
467	}	842	}
		843
		844	=item cf::register_extcmd $name => \&callback($pl,$packet);
		845
		846	Register a callbackf ro execution when the client sends an extcmd packet.
		847
		848	If the callback returns something, it is sent back as if reply was being
		849	called.
		850
		851	=cut
468		852
469	sub register_extcmd {	853	sub register_extcmd {
470	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
471		855
472	my $caller = caller;	856	$EXTCMD{$name} = $cb;
473	#warn "registering extcmd '$name' to '$caller'";
474
475	$extcmd{$name} = [$cb, $caller];
476	}	857	}
477		858
478	sub register {	859	cf::player->attach (
479	my ($base, $pkg) = @_;	860	on_command => sub {
		861	my ($pl, $name, $params) = @_;
480		862
481	#TODO	863	my $cb = $COMMAND{$name}
482	}	864	or return;
		865
		866	for my $cmd (@$cb) {
		867	$cmd->[1]->($pl->ob, $params);
		868	}
		869
		870	cf::override;
		871	},
		872	on_extcmd => sub {
		873	my ($pl, $buf) = @_;
		874
		875	my $msg = eval { from_json $buf };
		876
		877	if (ref $msg) {
		878	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		879	if (my %reply = $cb->($pl, $msg)) {
		880	$pl->ext_reply ($msg->{msgid}, %reply);
		881	}
		882	}
		883	} else {
		884	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		885	}
		886
		887	cf::override;
		888	},
		889	);
483		890
484	sub load_extension {	891	sub load_extension {
485	my ($path) = @_;	892	my ($path) = @_;
486		893
487	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	894	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
488	my $base = $1;	895	my $base = $1;
489	my $pkg = $1;	896	my $pkg = $1;
490	$pkg =~ s/[^[:word:]]/_/g;	897	$pkg =~ s/[^[:word:]]/_/g;
491	$pkg = "ext::$pkg";	898	$pkg = "ext::$pkg";
492		899
493	warn "loading '$path' into '$pkg'\n";	900	warn "... loading '$path' into '$pkg'\n";
494		901
495	open my $fh, "<:utf8", $path	902	open my $fh, "<:utf8", $path
496	or die "$path: $!";	903	or die "$path: $!";
497		904
498	my $source =	905	my $source =
499	"package $pkg; use strict; use utf8;\n"	906	"package $pkg; use strict; use utf8;\n"
500	. "#line 1 \"$path\"\n{\n"	907	. "#line 1 \"$path\"\n{\n"
501	. (do { local $/; <$fh> })	908	. (do { local $/; <$fh> })
502	. "\n};\n1";	909	. "\n};\n1";
503		910
504	eval $source	911	unless (eval $source) {
505	or die "$path: $@";	912	my $msg = $@ ? "$path: $@\n"
506		913	: "extension disabled.\n";
507	push @exts, $pkg;	914	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
508	$ext_pkg{$base} = $pkg;	915	warn $@;
509		916	warn "mandatory extension failed to load, exiting.\n";
510	# no strict 'refs';	917	exit 1;
511	# @{"$pkg\::ISA"} = ext::;	918	}
512		919	die $@;
513	register $base, $pkg;
514	}
515
516	sub unload_extension {
517	my ($pkg) = @_;
518
519	warn "removing extension $pkg\n";
520
521	# remove hooks
522	#TODO
523	# for my $idx (0 .. $#PLUGIN_EVENT) {
524	# delete $hook[$idx]{$pkg};
525	# }	920	}
526		921
527	# remove commands	922	push @EXTS, $pkg;
528	for my $name (keys %command) {
529	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
530
531	if (@cb) {
532	$command{$name} = \@cb;
533	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
534	} else {
535	delete $command{$name};
536	delete $COMMAND{"$name\000"};
537	}
538	}
539
540	# remove extcmds
541	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
542	delete $extcmd{$name};
543	}
544
545	if (my $cb = $pkg->can ("unload")) {
546	eval {
547	$cb->($pkg);
548	1
549	} or warn "$pkg unloaded, but with errors: $@";
550	}
551
552	Symbol::delete_package $pkg;
553	}	923	}
554		924
555	sub load_extensions {	925	sub load_extensions {
556	my $LIBDIR = maps_directory "perl";
557
558	for my $ext (<$LIBDIR/*.ext>) {	926	for my $ext (<$LIBDIR/*.ext>) {
559	next unless -r $ext;	927	next unless -r $ext;
560	eval {	928	eval {
561	load_extension $ext;	929	load_extension $ext;
562	1	930	1
563	} or warn "$ext not loaded: $@";	931	} or warn "$ext not loaded: $@";
564	}	932	}
565	}	933	}
566		934
567	sub _perl_reload(&) {	935	#############################################################################
		936
		937	=head2 CORE EXTENSIONS
		938
		939	Functions and methods that extend core crossfire objects.
		940
		941	=cut
		942
		943	package cf::player;
		944
		945	use Coro::AIO;
		946
		947	=head3 cf::player
		948
		949	=over 4
		950
		951	=item cf::player::find $login
		952
		953	Returns the given player object, loading it if necessary (might block).
		954
		955	=cut
		956
		957	sub playerdir($) {
		958	cf::localdir
		959	. "/"
		960	. cf::playerdir
		961	. "/"
		962	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		963	}
		964
		965	sub path($) {
		966	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		967
		968	(playerdir $login) . "/$login.pl"
		969	}
		970
		971	sub find_active($) {
		972	$cf::PLAYER{$_[0]}
		973	and $cf::PLAYER{$_[0]}->active
		974	and $cf::PLAYER{$_[0]}
		975	}
		976
		977	sub exists($) {
		978	my ($login) = @_;
		979
		980	$cf::PLAYER{$login}
		981	or cf::sync_job { !aio_stat path $login }
		982	}
		983
		984	sub find($) {
		985	return $cf::PLAYER{$_[0]} || do {
		986	my $login = $_[0];
		987
		988	my $guard = cf::lock_acquire "user_find:$login";
		989
		990	$cf::PLAYER{$_[0]} || do {
		991	my $pl = load_pl path $login
		992	or return;
		993	$cf::PLAYER{$login} = $pl
		994	}
		995	}
		996	}
		997
		998	sub save($) {
		999	my ($pl) = @_;
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	my $path = path $pl;
		1004	my $guard = cf::lock_acquire "user_save:$path";
		1005
		1006	return if $pl->{deny_save};
		1007
		1008	aio_mkdir playerdir $pl, 0770;
		1009	$pl->{last_save} = $cf::RUNTIME;
		1010
		1011	$pl->save_pl ($path);
		1012	Coro::cede;
		1013	}
		1014
		1015	sub new($) {
		1016	my ($login) = @_;
		1017
		1018	my $self = create;
		1019
		1020	$self->ob->name ($login);
		1021	$self->{deny_save} = 1;
		1022
		1023	$cf::PLAYER{$login} = $self;
		1024
		1025	$self
		1026	}
		1027
		1028	=item $pl->quit_character
		1029
		1030	Nukes the player without looking back. If logged in, the connection will
		1031	be destroyed. May block for a long time.
		1032
		1033	=cut
		1034
		1035	sub quit_character {
		1036	my ($pl) = @_;
		1037
		1038	my $name = $pl->ob->name;
		1039
		1040	$pl->{deny_save} = 1;
		1041	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1042
		1043	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1044	$pl->deactivate;
		1045	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1046	$pl->ns->destroy if $pl->ns;
		1047
		1048	my $path = playerdir $pl;
		1049	my $temp = "$path~$cf::RUNTIME~deleting~";
		1050	aio_rename $path, $temp;
		1051	delete $cf::PLAYER{$pl->ob->name};
		1052	$pl->destroy;
		1053
		1054	my $prefix = qr<^~\Q$name\E/>;
		1055
		1056	# nuke player maps
		1057	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1058
		1059	IO::AIO::aio_rmtree $temp;
		1060	}
		1061
		1062	=item $pl->kick
		1063
		1064	Kicks a player out of the game. This destroys the connection.
		1065
		1066	=cut
		1067
		1068	sub kick {
		1069	my ($pl, $kicker) = @_;
		1070
		1071	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1072	$pl->killer ("kicked");
		1073	$pl->ns->destroy;
		1074	}
		1075
		1076	=item cf::player::list_logins
		1077
		1078	Returns am arrayref of all valid playernames in the system, can take a
		1079	while and may block, so not sync_job-capable, ever.
		1080
		1081	=cut
		1082
		1083	sub list_logins {
		1084	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1085	or return [];
		1086
		1087	my @logins;
		1088
		1089	for my $login (@$dirs) {
		1090	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1091	aio_read $fh, 0, 512, my $buf, 0 or next;
		1092	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1093
		1094	utf8::decode $login;
		1095	push @logins, $login;
		1096	}
		1097
		1098	\@logins
		1099	}
		1100
		1101	=item $player->maps
		1102
		1103	Returns an arrayref of map paths that are private for this
		1104	player. May block.
		1105
		1106	=cut
		1107
		1108	sub maps($) {
		1109	my ($pl) = @_;
		1110
		1111	$pl = ref $pl ? $pl->ob->name : $pl;
		1112
		1113	my $files = aio_readdir playerdir $pl
		1114	or return;
		1115
		1116	my @paths;
		1117
		1118	for (@$files) {
		1119	utf8::decode $_;
		1120	next if /\.(?:pl|pst)$/;
		1121	next unless /^$PATH_SEP/o;
		1122
		1123	push @paths, cf::map::normalise "~$pl/$_";
		1124	}
		1125
		1126	\@paths
		1127	}
		1128
		1129	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1130
		1131	Sends an ext reply to the player.
		1132
		1133	=cut
		1134
		1135	sub ext_reply($$$%) {
		1136	my ($self, $id, %msg) = @_;
		1137
		1138	$msg{msgid} = $id;
		1139
		1140	$self->send ("ext " . cf::to_json \%msg);
		1141	}
		1142
		1143	package cf;
		1144
		1145	=back
		1146
		1147
		1148	=head3 cf::map
		1149
		1150	=over 4
		1151
		1152	=cut
		1153
		1154	package cf::map;
		1155
		1156	use Fcntl;
		1157	use Coro::AIO;
		1158
		1159	use overload
		1160	'""' => \&as_string,
		1161	fallback => 1;
		1162
		1163	our $MAX_RESET = 3600;
		1164	our $DEFAULT_RESET = 3000;
		1165
		1166	sub generate_random_map {
		1167	my ($self, $rmp) = @_;
		1168	# mit "rum" bekleckern, nicht
		1169	$self->_create_random_map (
		1170	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1171	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1172	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1173	$rmp->{exit_on_final_map},
		1174	$rmp->{xsize}, $rmp->{ysize},
		1175	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1176	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1177	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1178	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1179	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1180	(cf::region::find $rmp->{region}), $rmp->{custom}
		1181	)
		1182	}
		1183
		1184	=item cf::map->register ($regex, $prio)
		1185
		1186	Register a handler for the map path matching the given regex at the
		1187	givne priority (higher is better, built-in handlers have priority 0, the
		1188	default).
		1189
		1190	=cut
		1191
		1192	sub register {
		1193	my (undef, $regex, $prio) = @_;
		1194	my $pkg = caller;
		1195
		1196	no strict;
		1197	push @{"$pkg\::ISA"}, __PACKAGE__;
		1198
		1199	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1200	}
		1201
		1202	# also paths starting with '/'
		1203	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1204
		1205	sub thawer_merge {
		1206	my ($self, $merge) = @_;
		1207
		1208	# we have to keep some variables in memory intact
		1209	local $self->{path};
		1210	local $self->{load_path};
		1211	local $self->{deny_save};
		1212	local $self->{deny_reset};
		1213
		1214	$self->SUPER::thawer_merge ($merge);
		1215	}
		1216
		1217	sub normalise {
		1218	my ($path, $base) = @_;
		1219
		1220	$path = "$path"; # make sure its a string
		1221
		1222	$path =~ s/\.map$//;
		1223
		1224	# map plan:
		1225	#
		1226	# /! non-realised random map exit (special hack!)
		1227	# {... are special paths that are not being touched
		1228	# ?xxx/... are special absolute paths
		1229	# ?random/... random maps
		1230	# /... normal maps
		1231	# ~user/... per-player map of a specific user
		1232
		1233	$path =~ s/$PATH_SEP/\//go;
		1234
		1235	# treat it as relative path if it starts with
		1236	# something that looks reasonable
		1237	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1238	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1239
		1240	$base =~ s{[^/]+/?$}{};
		1241	$path = "$base/$path";
		1242	}
		1243
		1244	for ($path) {
		1245	redo if s{//}{/};
		1246	redo if s{/\.?/}{/};
		1247	redo if s{/[^/]+/\.\./}{/};
		1248	}
		1249
		1250	$path
		1251	}
		1252
		1253	sub new_from_path {
		1254	my (undef, $path, $base) = @_;
		1255
		1256	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1257
		1258	$path = normalise $path, $base;
		1259
		1260	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1261	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1262	my $self = bless cf::map::new, $pkg;
		1263	$self->{path} = $path; $self->path ($path);
		1264	$self->init; # pass $1 etc.
		1265	return $self;
		1266	}
		1267	}
		1268
		1269	Carp::carp "unable to resolve path '$path' (base '$base').";
		1270	()
		1271	}
		1272
		1273	sub init {
		1274	my ($self) = @_;
		1275
		1276	$self
		1277	}
		1278
		1279	sub as_string {
		1280	my ($self) = @_;
		1281
		1282	"$self->{path}"
		1283	}
		1284
		1285	# the displayed name, this is a one way mapping
		1286	sub visible_name {
		1287	&as_string
		1288	}
		1289
		1290	# the original (read-only) location
		1291	sub load_path {
		1292	my ($self) = @_;
		1293
		1294	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1295	}
		1296
		1297	# the temporary/swap location
		1298	sub save_path {
		1299	my ($self) = @_;
		1300
		1301	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1302	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1303	}
		1304
		1305	# the unique path, undef == no special unique path
		1306	sub uniq_path {
		1307	my ($self) = @_;
		1308
		1309	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1310	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1311	}
		1312
		1313	# and all this just because we cannot iterate over
		1314	# all maps in C++...
		1315	sub change_all_map_light {
		1316	my ($change) = @_;
		1317
		1318	$_->change_map_light ($change)
		1319	for grep $_->outdoor, values %cf::MAP;
		1320	}
		1321
		1322	sub unlink_save {
		1323	my ($self) = @_;
		1324
		1325	utf8::encode (my $save = $self->save_path);
		1326	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1327	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1328	}
		1329
		1330	sub load_header_from($) {
		1331	my ($self, $path) = @_;
		1332
		1333	utf8::encode $path;
		1334	#aio_open $path, O_RDONLY, 0
		1335	# or return;
		1336
		1337	$self->_load_header ($path)
		1338	or return;
		1339
		1340	$self->{load_path} = $path;
		1341
		1342	1
		1343	}
		1344
		1345	sub load_header_orig {
		1346	my ($self) = @_;
		1347
		1348	$self->load_header_from ($self->load_path)
		1349	}
		1350
		1351	sub load_header_temp {
		1352	my ($self) = @_;
		1353
		1354	$self->load_header_from ($self->save_path)
		1355	}
		1356
		1357	sub prepare_temp {
		1358	my ($self) = @_;
		1359
		1360	$self->last_access ((delete $self->{last_access})
		1361	|| $cf::RUNTIME); #d#
		1362	# safety
		1363	$self->{instantiate_time} = $cf::RUNTIME
		1364	if $self->{instantiate_time} > $cf::RUNTIME;
		1365	}
		1366
		1367	sub prepare_orig {
		1368	my ($self) = @_;
		1369
		1370	$self->{load_original} = 1;
		1371	$self->{instantiate_time} = $cf::RUNTIME;
		1372	$self->last_access ($cf::RUNTIME);
		1373	$self->instantiate;
		1374	}
		1375
		1376	sub load_header {
		1377	my ($self) = @_;
		1378
		1379	if ($self->load_header_temp) {
		1380	$self->prepare_temp;
		1381	} else {
		1382	$self->load_header_orig
		1383	or return;
		1384	$self->prepare_orig;
		1385	}
		1386
		1387	1
		1388	}
		1389
		1390	sub find;
		1391	sub find {
		1392	my ($path, $origin) = @_;
		1393
		1394	$path = normalise $path, $origin && $origin->path;
		1395
		1396	cf::lock_wait "map_find:$path";
		1397
		1398	$cf::MAP{$path} || do {
		1399	my $guard = cf::lock_acquire "map_find:$path";
		1400	my $map = new_from_path cf::map $path
		1401	or return;
		1402
		1403	$map->{last_save} = $cf::RUNTIME;
		1404
		1405	$map->load_header
		1406	or return;
		1407
		1408	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1409	# doing this can freeze the server in a sync job, obviously
		1410	#$cf::WAIT_FOR_TICK->wait;
		1411	$map->reset;
		1412	undef $guard;
		1413	return find $path;
		1414	}
		1415
		1416	$cf::MAP{$path} = $map
		1417	}
		1418	}
		1419
		1420	sub pre_load { }
		1421	sub post_load { }
		1422
		1423	sub load {
		1424	my ($self) = @_;
		1425
		1426	local $self->{deny_reset} = 1; # loading can take a long time
		1427
		1428	my $path = $self->{path};
		1429	my $guard = cf::lock_acquire "map_load:$path";
		1430
		1431	return if $self->in_memory != cf::MAP_SWAPPED;
		1432
		1433	$self->in_memory (cf::MAP_LOADING);
		1434
		1435	$self->alloc;
		1436
		1437	$self->pre_load;
		1438
		1439	$self->_load_objects ($self->{load_path}, 1)
		1440	or return;
		1441
		1442	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1443	if delete $self->{load_original};
		1444
		1445	if (my $uniq = $self->uniq_path) {
		1446	utf8::encode $uniq;
		1447	if (aio_open $uniq, O_RDONLY, 0) {
		1448	$self->clear_unique_items;
		1449	$self->_load_objects ($uniq, 0);
		1450	}
		1451	}
		1452
		1453	Coro::cede;
		1454
		1455	# now do the right thing for maps
		1456	$self->link_multipart_objects;
		1457
		1458	unless ($self->{deny_activate}) {
		1459	$self->decay_objects;
		1460	$self->fix_auto_apply;
		1461	$self->update_buttons;
		1462	Coro::cede;
		1463	$self->set_darkness_map;
		1464	$self->difficulty ($self->estimate_difficulty)
		1465	unless $self->difficulty;
		1466	Coro::cede;
		1467	$self->activate;
		1468	}
		1469
		1470	$self->post_load;
		1471
		1472	$self->in_memory (cf::MAP_IN_MEMORY);
		1473	}
		1474
		1475	sub customise_for {
		1476	my ($self, $ob) = @_;
		1477
		1478	return find "~" . $ob->name . "/" . $self->{path}
		1479	if $self->per_player;
		1480
		1481	$self
		1482	}
		1483
		1484	# find and load all maps in the 3x3 area around a map
		1485	sub load_diag {
568	my ($msg) = @_;	1486	my ($map) = @_;
569		1487
570	$msg->("reloading...");	1488	my @diag; # diagonal neighbours
571		1489
572	eval {	1490	for (0 .. 3) {
573	# 1. cancel all watchers	1491	my $neigh = $map->tile_path ($_)
574	$_->cancel for Event::all_watchers;	1492	or next;
		1493	$neigh = find $neigh, $map
		1494	or next;
		1495	$neigh->load;
575		1496
576	# 2. unload all extensions	1497	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
577	for (@exts) {	1498	[$neigh->tile_path (($_ + 1) % 4), $neigh];
578	$msg->("unloading <$_>");	1499	}
579	unload_extension $_;
580	}
581		1500
582	# 3. unload all modules loaded from $LIBDIR	1501	for (@diag) {
583	while (my ($k, $v) = each %INC) {	1502	my $neigh = find @$_
584	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1503	or next;
		1504	$neigh->load;
		1505	}
		1506	}
585		1507
586	$msg->("removing <$k>");	1508	sub find_sync {
587	delete $INC{$k};	1509	my ($path, $origin) = @_;
588		1510
589	$k =~ s/\.pm$//;	1511	cf::sync_job { find $path, $origin }
590	$k =~ s/\//::/g;	1512	}
591		1513
592	if (my $cb = $k->can ("unload_module")) {	1514	sub do_load_sync {
593	$cb->();	1515	my ($map) = @_;
		1516
		1517	cf::sync_job { $map->load };
		1518	}
		1519
		1520	our %MAP_PREFETCH;
		1521	our $MAP_PREFETCHER = undef;
		1522
		1523	sub find_async {
		1524	my ($path, $origin) = @_;
		1525
		1526	$path = normalise $path, $origin && $origin->{path};
		1527
		1528	if (my $map = $cf::MAP{$path}) {
		1529	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1530	}
		1531
		1532	undef $MAP_PREFETCH{$path};
		1533	$MAP_PREFETCHER ||= cf::async {
		1534	while (%MAP_PREFETCH) {
		1535	for my $path (keys %MAP_PREFETCH) {
		1536	my $map = find $path
		1537	or next;
		1538	$map->load;
		1539
		1540	delete $MAP_PREFETCH{$path};
594	}	1541	}
595
596	Symbol::delete_package $k;
597	}
598
599	# 4. get rid of safe::, as good as possible
600	Symbol::delete_package "safe::$_"
601	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
602
603	# 5. remove register_script_function callbacks
604	# TODO
605		1542	}
606	# 6. unload cf.pm "a bit"	1543	undef $MAP_PREFETCHER;
607	delete $INC{"cf.pm"};
608
609	# don't, removes xs symbols, too,
610	# and global variables created in xs
611	#Symbol::delete_package __PACKAGE__;
612
613	# 7. reload cf.pm
614	$msg->("reloading cf.pm");
615	require cf;
616	};	1544	};
617	$msg->($@) if $@;	1545	$MAP_PREFETCHER->prio (6);
618		1546
619	$msg->("reloaded");	1547	()
620	};	1548	}
621		1549
622	sub perl_reload() {	1550	sub save {
623	_perl_reload {	1551	my ($self) = @_;
624	warn $_[0];	1552
625	print "$_[0]\n";	1553	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1554
		1555	$self->{last_save} = $cf::RUNTIME;
		1556
		1557	return unless $self->dirty;
		1558
		1559	my $save = $self->save_path; utf8::encode $save;
		1560	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1561
		1562	$self->{load_path} = $save;
		1563
		1564	return if $self->{deny_save};
		1565
		1566	local $self->{last_access} = $self->last_access;#d#
		1567
		1568	cf::async {
		1569	$_->contr->save for $self->players;
626	};	1570	};
627	}
628		1571
629	register_command "perl-reload", 0, sub {	1572	if ($uniq) {
630	my ($who, $arg) = @_;	1573	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
631		1574	$self->_save_objects ($uniq, cf::IO_UNIQUES);
632	if ($who->flag (FLAG_WIZ)) {
633	_perl_reload {
634	warn $_[0];
635	$who->message ($_[0]);
636	};
637	}
638	};
639
640	#############################################################################
641	# extcmd framework, basically convert ext <msg>
642	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643
644	attach_to_players
645	on_extcmd => sub {
646	my ($pl, $buf) = @_;
647
648	my $msg = eval { from_json $buf };
649
650	if (ref $msg) {
651	if (my $cb = $extcmd{$msg->{msgtype}}) {
652	if (my %reply = $cb->[0]->($pl, $msg)) {
653	$pl->ext_reply ($msg->{msgid}, %reply);
654	}
655	}
656	} else {	1575	} else {
657	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1576	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
658	}
659
660	cf::override;
661	},	1577	}
662	;	1578	}
663		1579
664	#############################################################################	1580	sub swap_out {
665	# load/save/clean perl data associated with a map
666
667	*cf::mapsupport::on_clean = sub {
668	my ($map) = @_;	1581	my ($self) = @_;
669		1582
670	my $path = $map->tmpname;	1583	# save first because save cedes
671	defined $path or return;	1584	$self->save;
672		1585
673	unlink "$path.pst";	1586	my $lock = cf::lock_acquire "map_data:" . $self->path;
674	};
675		1587
676	# old style persistent data, TODO: remove #d#	1588	return if $self->players;
677	*cf::mapsupport::on_swapin =	1589	return if $self->in_memory != cf::MAP_IN_MEMORY;
678	*cf::mapsupport::on_load = sub {	1590	return if $self->{deny_save};
		1591
		1592	$self->clear;
		1593	$self->in_memory (cf::MAP_SWAPPED);
		1594	}
		1595
		1596	sub reset_at {
679	my ($map) = @_;	1597	my ($self) = @_;
680		1598
681	my $path = $map->tmpname;	1599	# TODO: safety, remove and allow resettable per-player maps
682	$path = $map->path unless defined $path;	1600	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1601	return 1e99 if $self->{deny_reset};
683		1602
684	open my $fh, "<:raw", "$path.cfperl"	1603	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
685	or return; # no perl data	1604	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
686		1605
687	my $data = Storable::thaw do { local $/; <$fh> };	1606	$time + $to
688
689	$data->{version} <= 1
690	or return; # too new
691
692	$map->_set_obs ($data->{obs});
693	$map->invoke (EVENT_MAP_UPGRADE);
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;
697
698	#############################################################################
699	# load/save perl data associated with player->ob objects
700
701	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_
703	}	1607	}
704		1608
705	attach_to_players	1609	sub should_reset {
706	on_load => sub {	1610	my ($self) = @_;
707	my ($pl, $path) = @_;
708		1611
709	for my $o (all_objects $pl->ob) {	1612	$self->reset_at <= $cf::RUNTIME
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1613	}
711	$o->set_ob_key_value ("_perl_data");
712		1614
713	%$o = %{ Storable::thaw pack "H*", $value };	1615	sub reset {
714	}	1616	my ($self) = @_;
715	}	1617
		1618	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1619
		1620	return if $self->players;
		1621	return if $self->isa ("ext::map_per_player");#d#
		1622
		1623	warn "resetting map ", $self->path;#d#
		1624
		1625	$self->in_memory (cf::MAP_SWAPPED);
		1626
		1627	# need to save uniques path
		1628	unless ($self->{deny_save}) {
		1629	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1630
		1631	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1632	if $uniq;
716	},	1633	}
717	;
718		1634
719	#############################################################################	1635	delete $cf::MAP{$self->path};
720	# core extensions - in perl
721		1636
722	=item cf::player::exists $login	1637	$self->clear;
723		1638
724	Returns true when the given account exists.	1639	$_->clear_links_to ($self) for values %cf::MAP;
725		1640
726	=cut	1641	$self->unlink_save;
727		1642	$self->destroy;
728	sub cf::player::exists($) {
729	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	1643	}
732		1644
		1645	my $nuke_counter = "aaaa";
		1646
		1647	sub nuke {
		1648	my ($self) = @_;
		1649
		1650	delete $cf::MAP{$self->path};
		1651
		1652	$self->unlink_save;
		1653
		1654	bless $self, "cf::map";
		1655	delete $self->{deny_reset};
		1656	$self->{deny_save} = 1;
		1657	$self->reset_timeout (1);
		1658	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1659
		1660	$cf::MAP{$self->path} = $self;
		1661
		1662	$self->reset; # polite request, might not happen
		1663	}
		1664
		1665	=item cf::map::unique_maps
		1666
		1667	Returns an arrayref of paths of all shared maps that have
		1668	instantiated unique items. May block.
		1669
		1670	=cut
		1671
		1672	sub unique_maps() {
		1673	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1674	or return;
		1675
		1676	my @paths;
		1677
		1678	for (@$files) {
		1679	utf8::decode $_;
		1680	next if /\.pst$/;
		1681	next unless /^$PATH_SEP/o;
		1682
		1683	push @paths, cf::map::normalise $_;
		1684	}
		1685
		1686	\@paths
		1687	}
		1688
		1689	package cf;
		1690
		1691	=back
		1692
		1693	=head3 cf::object
		1694
		1695	=cut
		1696
		1697	package cf::object;
		1698
		1699	=over 4
		1700
		1701	=item $ob->inv_recursive
		1702
		1703	Returns the inventory of the object _and_ their inventories, recursively.
		1704
		1705	=cut
		1706
		1707	sub inv_recursive_;
		1708	sub inv_recursive_ {
		1709	map { $_, inv_recursive_ $_->inv } @_
		1710	}
		1711
		1712	sub inv_recursive {
		1713	inv_recursive_ inv $_[0]
		1714	}
		1715
		1716	package cf;
		1717
		1718	=back
		1719
		1720	=head3 cf::object::player
		1721
		1722	=over 4
		1723
733	=item $player->reply ($npc, $msg[, $flags])	1724	=item $player_object->reply ($npc, $msg[, $flags])
734		1725
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1726	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	1727	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1728	dialogue with the given NPC character.
738		1729
739	=cut	1730	=cut
740		1731
741	# rough implementation of a future "reply" method that works	1732	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1733	# with dialog boxes.
		1734	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1735	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1736	my ($self, $npc, $msg, $flags) = @_;
745		1737
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1738	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1739
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1743	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1744	$self->message ($msg, $flags);
753	}	1745	}
754	}	1746	}
755		1747
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1748	=item $player_object->may ("access")
757		1749
758	Sends an ext reply to the player.	1750	Returns wether the given player is authorized to access resource "access"
		1751	(e.g. "command_wizcast").
759		1752
760	=cut	1753	=cut
761		1754
762	sub cf::player::ext_reply($$$%) {	1755	sub cf::object::player::may {
		1756	my ($self, $access) = @_;
		1757
		1758	$self->flag (cf::FLAG_WIZ) ||
		1759	(ref $cf::CFG{"may_$access"}
		1760	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1761	: $cf::CFG{"may_$access"})
		1762	}
		1763
		1764	=item $player_object->enter_link
		1765
		1766	Freezes the player and moves him/her to a special map (C<{link}>).
		1767
		1768	The player should be reasonably safe there for short amounts of time. You
		1769	I<MUST> call C<leave_link> as soon as possible, though.
		1770
		1771	Will never block.
		1772
		1773	=item $player_object->leave_link ($map, $x, $y)
		1774
		1775	Moves the player out of the special C<{link}> map onto the specified
		1776	map. If the map is not valid (or omitted), the player will be moved back
		1777	to the location he/she was before the call to C<enter_link>, or, if that
		1778	fails, to the emergency map position.
		1779
		1780	Might block.
		1781
		1782	=cut
		1783
		1784	sub link_map {
		1785	unless ($LINK_MAP) {
		1786	$LINK_MAP = cf::map::find "{link}"
		1787	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1788	$LINK_MAP->load;
		1789	}
		1790
		1791	$LINK_MAP
		1792	}
		1793
		1794	sub cf::object::player::enter_link {
		1795	my ($self) = @_;
		1796
		1797	$self->deactivate_recursive;
		1798
		1799	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1800
		1801	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1802	if $self->map;
		1803
		1804	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1805	}
		1806
		1807	sub cf::object::player::leave_link {
		1808	my ($self, $map, $x, $y) = @_;
		1809
		1810	my $link_pos = delete $self->{_link_pos};
		1811
		1812	unless ($map) {
		1813	# restore original map position
		1814	($map, $x, $y) = @{ $link_pos || [] };
		1815	$map = cf::map::find $map;
		1816
		1817	unless ($map) {
		1818	($map, $x, $y) = @$EMERGENCY_POSITION;
		1819	$map = cf::map::find $map
		1820	or die "FATAL: cannot load emergency map\n";
		1821	}
		1822	}
		1823
		1824	($x, $y) = (-1, -1)
		1825	unless (defined $x) && (defined $y);
		1826
		1827	# use -1 or undef as default coordinates, not 0, 0
		1828	($x, $y) = ($map->enter_x, $map->enter_y)
		1829	if $x <=0 && $y <= 0;
		1830
		1831	$map->load;
		1832	$map->load_diag;
		1833
		1834	return unless $self->contr->active;
		1835	$self->activate_recursive;
		1836
		1837	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1838	$self->enter_map ($map, $x, $y);
		1839	}
		1840
		1841	cf::player->attach (
		1842	on_logout => sub {
		1843	my ($pl) = @_;
		1844
		1845	# abort map switching before logout
		1846	if ($pl->ob->{_link_pos}) {
		1847	cf::sync_job {
		1848	$pl->ob->leave_link
		1849	};
		1850	}
		1851	},
		1852	on_login => sub {
		1853	my ($pl) = @_;
		1854
		1855	# try to abort aborted map switching on player login :)
		1856	# should happen only on crashes
		1857	if ($pl->ob->{_link_pos}) {
		1858	$pl->ob->enter_link;
		1859	(async {
		1860	$pl->ob->reply (undef,
		1861	"There was an internal problem at your last logout, "
		1862	. "the server will try to bring you to your intended destination in a second.",
		1863	cf::NDI_RED);
		1864	# we need this sleep as the login has a concurrent enter_exit running
		1865	# and this sleep increases chances of the player not ending up in scorn
		1866	Coro::Timer::sleep 1;
		1867	$pl->ob->leave_link;
		1868	})->prio (2);
		1869	}
		1870	},
		1871	);
		1872
		1873	=item $player_object->goto ($path, $x, $y)
		1874
		1875	=cut
		1876
		1877	sub cf::object::player::goto {
		1878	my ($self, $path, $x, $y) = @_;
		1879
		1880	$self->enter_link;
		1881
		1882	(async {
		1883	my $map = eval {
		1884	my $map = cf::map::find $path;
		1885	$map = $map->customise_for ($self) if $map;
		1886	$map
		1887	} or
		1888	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1889
		1890	$self->leave_link ($map, $x, $y);
		1891	})->prio (1);
		1892	}
		1893
		1894	=item $player_object->enter_exit ($exit_object)
		1895
		1896	=cut
		1897
		1898	sub parse_random_map_params {
		1899	my ($spec) = @_;
		1900
		1901	my $rmp = { # defaults
		1902	xsize => (cf::rndm 15, 40),
		1903	ysize => (cf::rndm 15, 40),
		1904	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1905	#layout => string,
		1906	};
		1907
		1908	for (split /\n/, $spec) {
		1909	my ($k, $v) = split /\s+/, $_, 2;
		1910
		1911	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1912	}
		1913
		1914	$rmp
		1915	}
		1916
		1917	sub prepare_random_map {
		1918	my ($exit) = @_;
		1919
		1920	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1921
		1922	# all this does is basically replace the /! path by
		1923	# a new random map path (?random/...) with a seed
		1924	# that depends on the exit object
		1925
		1926	my $rmp = parse_random_map_params $exit->msg;
		1927
		1928	if ($exit->map) {
		1929	$rmp->{region} = $exit->region->name;
		1930	$rmp->{origin_map} = $exit->map->path;
		1931	$rmp->{origin_x} = $exit->x;
		1932	$rmp->{origin_y} = $exit->y;
		1933	}
		1934
		1935	$rmp->{random_seed} ||= $exit->random_seed;
		1936
		1937	my $data = cf::to_json $rmp;
		1938	my $md5 = Digest::MD5::md5_hex $data;
		1939	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1940
		1941	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1942	aio_write $fh, 0, (length $data), $data, 0;
		1943	undef $fh;
		1944	aio_rename "$meta~", $meta;
		1945
		1946	$exit->slaying ("?random/$md5");
		1947	$exit->msg (undef);
		1948	}
		1949	}
		1950
		1951	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1952	my ($self, $exit) = @_;
764		1953
765	$msg{msgid} = $id;	1954	return unless $self->type == cf::PLAYER;
766		1955
767	$self->send ("ext " . to_json \%msg);	1956	if ($exit->slaying eq "/!") {
768	}	1957	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1958	cf::sync_job { prepare_random_map $exit };
		1959	}
769		1960
770	#############################################################################	1961	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
771	# map scripting support	1962	my $hp = $exit->stats->hp;
		1963	my $sp = $exit->stats->sp;
		1964
		1965	$self->enter_link;
		1966
		1967	(async {
		1968	$self->deactivate_recursive; # just to be sure
		1969	unless (eval {
		1970	$self->goto ($slaying, $hp, $sp);
		1971
		1972	1;
		1973	}) {
		1974	$self->message ("Something went wrong deep within the crossfire server. "
		1975	. "I'll try to bring you back to the map you were before. "
		1976	. "Please report this to the dungeon master!",
		1977	cf::NDI_UNIQUE | cf::NDI_RED);
		1978
		1979	warn "ERROR in enter_exit: $@";
		1980	$self->leave_link;
		1981	}
		1982	})->prio (1);
		1983	}
		1984
		1985	=head3 cf::client
		1986
		1987	=over 4
		1988
		1989	=item $client->send_drawinfo ($text, $flags)
		1990
		1991	Sends a drawinfo packet to the client. Circumvents output buffering so
		1992	should not be used under normal circumstances.
		1993
		1994	=cut
		1995
		1996	sub cf::client::send_drawinfo {
		1997	my ($self, $text, $flags) = @_;
		1998
		1999	utf8::encode $text;
		2000	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2001	}
		2002
		2003
		2004	=item $success = $client->query ($flags, "text", \&cb)
		2005
		2006	Queues a query to the client, calling the given callback with
		2007	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2008	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2009
		2010	Queries can fail, so check the return code. Or don't, as queries will become
		2011	reliable at some point in the future.
		2012
		2013	=cut
		2014
		2015	sub cf::client::query {
		2016	my ($self, $flags, $text, $cb) = @_;
		2017
		2018	return unless $self->state == ST_PLAYING
		2019	|| $self->state == ST_SETUP
		2020	|| $self->state == ST_CUSTOM;
		2021
		2022	$self->state (ST_CUSTOM);
		2023
		2024	utf8::encode $text;
		2025	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2026
		2027	$self->send_packet ($self->{query_queue}[0][0])
		2028	if @{ $self->{query_queue} } == 1;
		2029	}
		2030
		2031	cf::client->attach (
		2032	on_reply => sub {
		2033	my ($ns, $msg) = @_;
		2034
		2035	# this weird shuffling is so that direct followup queries
		2036	# get handled first
		2037	my $queue = delete $ns->{query_queue}
		2038	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2039
		2040	(shift @$queue)->[1]->($msg);
		2041	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2042
		2043	push @{ $ns->{query_queue} }, @$queue;
		2044
		2045	if (@{ $ns->{query_queue} } == @$queue) {
		2046	if (@$queue) {
		2047	$ns->send_packet ($ns->{query_queue}[0][0]);
		2048	} else {
		2049	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2050	}
		2051	}
		2052	},
		2053	);
		2054
		2055	=item $client->async (\&cb)
		2056
		2057	Create a new coroutine, running the specified callback. The coroutine will
		2058	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2059	or loss of connection).
		2060
		2061	=cut
		2062
		2063	sub cf::client::async {
		2064	my ($self, $cb) = @_;
		2065
		2066	my $coro = &Coro::async ($cb);
		2067
		2068	$coro->on_destroy (sub {
		2069	delete $self->{_coro}{$coro+0};
		2070	});
		2071
		2072	$self->{_coro}{$coro+0} = $coro;
		2073
		2074	$coro
		2075	}
		2076
		2077	cf::client->attach (
		2078	on_destroy => sub {
		2079	my ($ns) = @_;
		2080
		2081	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2082	},
		2083	);
		2084
		2085	=back
		2086
		2087
		2088	=head2 SAFE SCRIPTING
		2089
		2090	Functions that provide a safe environment to compile and execute
		2091	snippets of perl code without them endangering the safety of the server
		2092	itself. Looping constructs, I/O operators and other built-in functionality
		2093	is not available in the safe scripting environment, and the number of
		2094	functions and methods that can be called is greatly reduced.
		2095
		2096	=cut
772		2097
773	our $safe = new Safe "safe";	2098	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	2099	our $safe_hole = new Safe::Hole;
775		2100
776	$SIG{FPE} = 'IGNORE';	2101	$SIG{FPE} = 'IGNORE';
777		2102
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2103	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		2104
780	# here we export the classes and methods available to script code	2105	# here we export the classes and methods available to script code
781		2106
		2107	=pod
		2108
		2109	The following fucntions and emthods are available within a safe environment:
		2110
		2111	cf::object contr pay_amount pay_player map
		2112	cf::object::player player
		2113	cf::player peaceful
		2114	cf::map trigger
		2115
		2116	=cut
		2117
782	for (	2118	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	2119	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	2120	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	2121	["cf::player" => qw(peaceful)],
		2122	["cf::map" => qw(trigger)],
786	) {	2123	) {
787	no strict 'refs';	2124	no strict 'refs';
788	my ($pkg, @funs) = @$_;	2125	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2126	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	2127	for @funs;
791	}	2128	}
		2129
		2130	=over 4
		2131
		2132	=item @retval = safe_eval $code, [var => value, ...]
		2133
		2134	Compiled and executes the given perl code snippet. additional var/value
		2135	pairs result in temporary local (my) scalar variables of the given name
		2136	that are available in the code snippet. Example:
		2137
		2138	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2139
		2140	=cut
792		2141
793	sub safe_eval($;@) {	2142	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	2143	my ($code, %vars) = @_;
795		2144
796	my $qcode = $code;	2145	my $qcode = $code;
…		…
819	}	2168	}
820		2169
821	wantarray ? @res : $res[0]	2170	wantarray ? @res : $res[0]
822	}	2171	}
823		2172
		2173	=item cf::register_script_function $function => $cb
		2174
		2175	Register a function that can be called from within map/npc scripts. The
		2176	function should be reasonably secure and should be put into a package name
		2177	like the extension.
		2178
		2179	Example: register a function that gets called whenever a map script calls
		2180	C<rent::overview>, as used by the C<rent> extension.
		2181
		2182	cf::register_script_function "rent::overview" => sub {
		2183	...
		2184	};
		2185
		2186	=cut
		2187
824	sub register_script_function {	2188	sub register_script_function {
825	my ($fun, $cb) = @_;	2189	my ($fun, $cb) = @_;
826		2190
827	no strict 'refs';	2191	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2192	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	2193	}
830		2194
		2195	=back
		2196
		2197	=cut
		2198
831	#############################################################################	2199	#############################################################################
832	# the server's main()	2200
		2201	=head2 EXTENSION DATABASE SUPPORT
		2202
		2203	Crossfire maintains a very simple database for extension use. It can
		2204	currently store anything that can be serialised using Storable, which
		2205	excludes objects.
		2206
		2207	The parameter C<$family> should best start with the name of the extension
		2208	using it, it should be unique.
		2209
		2210	=over 4
		2211
		2212	=item $value = cf::db_get $family => $key
		2213
		2214	Returns a single value from the database.
		2215
		2216	=item cf::db_put $family => $key => $value
		2217
		2218	Stores the given C<$value> in the family.
		2219
		2220	=cut
		2221
		2222	our $DB;
		2223
		2224	sub db_init {
		2225	unless ($DB) {
		2226	$DB = BDB::db_create $DB_ENV;
		2227
		2228	cf::sync_job {
		2229	eval {
		2230	$DB->set_flags (BDB::CHKSUM);
		2231
		2232	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2233	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2234	cf::cleanup "db_open(db): $!" if $!;
		2235	};
		2236	cf::cleanup "db_open(db): $@" if $@;
		2237	};
		2238
		2239	my $path = cf::localdir . "/database.pst";
		2240	if (stat $path) {
		2241	cf::sync_job {
		2242	my $pst = Storable::retrieve $path;
		2243
		2244	cf::db_put (board => data => $pst->{board});
		2245	cf::db_put (guildrules => data => $pst->{guildrules});
		2246	cf::db_put (rent => balance => $pst->{rent}{balance});
		2247	BDB::db_env_txn_checkpoint $DB_ENV;
		2248
		2249	unlink $path;
		2250	};
		2251	}
		2252	}
		2253	}
		2254
		2255	sub db_get($$) {
		2256	my $key = "$_[0]/$_[1]";
		2257
		2258	cf::sync_job {
		2259	BDB::db_get $DB, undef, $key, my $data;
		2260
		2261	$! ? ()
		2262	: Compress::LZF::sthaw $data
		2263	}
		2264	}
		2265
		2266	sub db_put($$$) {
		2267	BDB::dbreq_pri 4;
		2268	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2269	}
		2270
		2271	#############################################################################
		2272	# the server's init and main functions
		2273
		2274	sub load_faces {
		2275	my $path = sprintf "%s/faces", cf::datadir;
		2276
		2277	warn "loading faces from $path\n";
		2278
		2279	my $faces;
		2280	0 < aio_load $path, $faces
		2281	or die "$path: $!";
		2282
		2283	Coro::cede;
		2284	$faces = Storable::thaw $faces;
		2285	Coro::cede;
		2286
		2287	while (my ($face, $info) = each %$faces) {
		2288	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2289	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2290	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2291	Coro::cede;
		2292	}
		2293
		2294	while (my ($face, $info) = each %$faces) {
		2295	next unless $info->{smooth};
		2296	my $idx = cf::face::find $face
		2297	or next;
		2298	if (my $smooth = cf::face::find $info->{smooth}) {
		2299	cf::face::set_smooth $idx, $smooth;
		2300	warn "smooth $idx,$smooth ($face,$info->{smooth})\n";#d#
		2301	} else {
		2302	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2303	}
		2304	Coro::cede;
		2305	}
		2306
		2307	1
		2308	}
		2309
		2310	sub reload_resources {
		2311	load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2312	or die "unable to load regions file\n";#d#
		2313	load_faces
		2314	or die "unable to load faces\n";#d#
		2315	}
		2316
		2317	sub init {
		2318	reload_resources;
		2319	}
		2320
		2321	sub cfg_load {
		2322	open my $fh, "<:utf8", cf::confdir . "/config"
		2323	or return;
		2324
		2325	local $/;
		2326	*CFG = YAML::Syck::Load <$fh>;
		2327
		2328	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2329
		2330	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2331	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2332
		2333	if (exists $CFG{mlockall}) {
		2334	eval {
		2335	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2336	and die "WARNING: m(un)lockall failed: $!\n";
		2337	};
		2338	warn $@ if $@;
		2339	}
		2340	}
833		2341
834	sub main {	2342	sub main {
		2343	# we must not ever block the main coroutine
		2344	local $Coro::idle = sub {
		2345	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2346	(async {
		2347	Event::one_event;
		2348	})->prio (Coro::PRIO_MAX);
		2349	};
		2350
		2351	cfg_load;
		2352	db_init;
		2353	load_extensions;
		2354
		2355	$TICK_WATCHER->start;
835	Event::loop;	2356	Event::loop;
836	}	2357	}
837		2358
838	#############################################################################	2359	#############################################################################
839	# initialisation	2360	# initialisation and cleanup
840		2361
841	register "<global>", __PACKAGE__;	2362	# install some emergency cleanup handlers
		2363	BEGIN {
		2364	for my $signal (qw(INT HUP TERM)) {
		2365	Event->signal (
		2366	reentrant => 0,
		2367	data => WF_AUTOCANCEL,
		2368	signal => $signal,
		2369	prio => 0,
		2370	cb => sub {
		2371	cf::cleanup "SIG$signal";
		2372	},
		2373	);
		2374	}
		2375	}
		2376
		2377	sub emergency_save() {
		2378	my $freeze_guard = cf::freeze_mainloop;
		2379
		2380	warn "enter emergency perl save\n";
		2381
		2382	cf::sync_job {
		2383	# use a peculiar iteration method to avoid tripping on perl
		2384	# refcount bugs in for. also avoids problems with players
		2385	# and maps saved/destroyed asynchronously.
		2386	warn "begin emergency player save\n";
		2387	for my $login (keys %cf::PLAYER) {
		2388	my $pl = $cf::PLAYER{$login} or next;
		2389	$pl->valid or next;
		2390	$pl->save;
		2391	}
		2392	warn "end emergency player save\n";
		2393
		2394	warn "begin emergency map save\n";
		2395	for my $path (keys %cf::MAP) {
		2396	my $map = $cf::MAP{$path} or next;
		2397	$map->valid or next;
		2398	$map->save;
		2399	}
		2400	warn "end emergency map save\n";
		2401
		2402	warn "begin emergency database checkpoint\n";
		2403	BDB::db_env_txn_checkpoint $DB_ENV;
		2404	warn "end emergency database checkpoint\n";
		2405	};
		2406
		2407	warn "leave emergency perl save\n";
		2408	}
		2409
		2410	sub post_cleanup {
		2411	my ($make_core) = @_;
		2412
		2413	warn Carp::longmess "post_cleanup backtrace"
		2414	if $make_core;
		2415	}
		2416
		2417	sub reload() {
		2418	# can/must only be called in main
		2419	if ($Coro::current != $Coro::main) {
		2420	warn "can only reload from main coroutine";
		2421	return;
		2422	}
		2423
		2424	warn "reloading...";
		2425
		2426	warn "entering sync_job";
		2427
		2428	cf::sync_job {
		2429	cf::write_runtime; # external watchdog should not bark
		2430	cf::emergency_save;
		2431	cf::write_runtime; # external watchdog should not bark
		2432
		2433	warn "syncing database to disk";
		2434	BDB::db_env_txn_checkpoint $DB_ENV;
		2435
		2436	# if anything goes wrong in here, we should simply crash as we already saved
		2437
		2438	warn "cancelling all WF_AUTOCANCEL watchers";
		2439	for (Event::all_watchers) {
		2440	$_->cancel if $_->data & WF_AUTOCANCEL;
		2441	}
		2442
		2443	warn "flushing outstanding aio requests";
		2444	for (;;) {
		2445	BDB::flush;
		2446	IO::AIO::flush;
		2447	Coro::cede;
		2448	last unless IO::AIO::nreqs || BDB::nreqs;
		2449	warn "iterate...";
		2450	}
		2451
		2452	++$RELOAD;
		2453
		2454	warn "cancelling all extension coros";
		2455	$_->cancel for values %EXT_CORO;
		2456	%EXT_CORO = ();
		2457
		2458	warn "removing commands";
		2459	%COMMAND = ();
		2460
		2461	warn "removing ext commands";
		2462	%EXTCMD = ();
		2463
		2464	warn "unloading/nuking all extensions";
		2465	for my $pkg (@EXTS) {
		2466	warn "... unloading $pkg";
		2467
		2468	if (my $cb = $pkg->can ("unload")) {
		2469	eval {
		2470	$cb->($pkg);
		2471	1
		2472	} or warn "$pkg unloaded, but with errors: $@";
		2473	}
		2474
		2475	warn "... nuking $pkg";
		2476	Symbol::delete_package $pkg;
		2477	}
		2478
		2479	warn "unloading all perl modules loaded from $LIBDIR";
		2480	while (my ($k, $v) = each %INC) {
		2481	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2482
		2483	warn "... unloading $k";
		2484	delete $INC{$k};
		2485
		2486	$k =~ s/\.pm$//;
		2487	$k =~ s/\//::/g;
		2488
		2489	if (my $cb = $k->can ("unload_module")) {
		2490	$cb->();
		2491	}
		2492
		2493	Symbol::delete_package $k;
		2494	}
		2495
		2496	warn "getting rid of safe::, as good as possible";
		2497	Symbol::delete_package "safe::$_"
		2498	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2499
		2500	warn "unloading cf.pm \"a bit\"";
		2501	delete $INC{"cf.pm"};
		2502
		2503	# don't, removes xs symbols, too,
		2504	# and global variables created in xs
		2505	#Symbol::delete_package __PACKAGE__;
		2506
		2507	warn "unload completed, starting to reload now";
		2508
		2509	warn "reloading cf.pm";
		2510	require cf;
		2511	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2512
		2513	warn "loading config and database again";
		2514	cf::cfg_load;
		2515
		2516	warn "loading extensions";
		2517	cf::load_extensions;
		2518
		2519	warn "reattaching attachments to objects/players";
		2520	_global_reattach; # objects, sockets
		2521	warn "reattaching attachments to maps";
		2522	reattach $_ for values %MAP;
		2523	warn "reattaching attachments to players";
		2524	reattach $_ for values %PLAYER;
		2525
		2526	warn "loading reloadable resources";
		2527	reload_resources;
		2528
		2529	warn "leaving sync_job";
		2530
		2531	1
		2532	} or do {
		2533	warn $@;
		2534	warn "error while reloading, exiting.";
		2535	exit 1;
		2536	};
		2537
		2538	warn "reloaded";
		2539	};
		2540
		2541	our $RELOAD_WATCHER; # used only during reload
		2542
		2543	register_command "reload" => sub {
		2544	my ($who, $arg) = @_;
		2545
		2546	if ($who->flag (FLAG_WIZ)) {
		2547	$who->message ("reloading server.");
		2548
		2549	# doing reload synchronously and two reloads happen back-to-back,
		2550	# coro crashes during coro_state_free->destroy here.
		2551
		2552	$RELOAD_WATCHER ||= Event->timer (
		2553	reentrant => 0,
		2554	after => 0,
		2555	data => WF_AUTOCANCEL,
		2556	cb => sub {
		2557	reload;
		2558	undef $RELOAD_WATCHER;
		2559	},
		2560	);
		2561	}
		2562	};
842		2563
843	unshift @INC, $LIBDIR;	2564	unshift @INC, $LIBDIR;
844		2565
845	load_extensions;	2566	my $bug_warning = 0;
846		2567
847	$TICK_WATCHER = Event->timer (	2568	$TICK_WATCHER = Event->timer (
		2569	reentrant => 0,
		2570	parked => 1,
848	prio => 1,	2571	prio => 0,
849	at => $NEXT_TICK || 1,	2572	at => $NEXT_TICK || $TICK,
		2573	data => WF_AUTOCANCEL,
850	cb => sub {	2574	cb => sub {
		2575	if ($Coro::current != $Coro::main) {
		2576	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2577	unless ++$bug_warning > 10;
		2578	return;
		2579	}
		2580
		2581	$NOW = Event::time;
		2582
851	cf::server_tick; # one server iteration	2583	cf::server_tick; # one server iteration
852		2584	$RUNTIME += $TICK;
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2585	$NEXT_TICK += $TICK;
855		2586
		2587	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2588	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2589	Coro::async_pool {
		2590	write_runtime
		2591	or warn "ERROR: unable to write runtime file: $!";
		2592	};
		2593	}
		2594
		2595	$WAIT_FOR_TICK->broadcast;
		2596	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2597
		2598	# my $AFTER = Event::time;
		2599	# warn $AFTER - $NOW;#d#
		2600
856	# if we are delayed by four ticks, skip them all	2601	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2602	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2603
859	$TICK_WATCHER->at ($NEXT_TICK);	2604	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2605	$TICK_WATCHER->start;
861	},	2606	},
862	);	2607	);
863		2608
864	_reload_2;	2609	{
		2610	BDB::max_poll_time $TICK * 0.1;
		2611	$BDB_POLL_WATCHER = Event->io (
		2612	reentrant => 0,
		2613	fd => BDB::poll_fileno,
		2614	poll => 'r',
		2615	prio => 0,
		2616	data => WF_AUTOCANCEL,
		2617	cb => \&BDB::poll_cb,
		2618	);
		2619	BDB::min_parallel 8;
		2620
		2621	BDB::set_sync_prepare {
		2622	my $status;
		2623	my $current = $Coro::current;
		2624	(
		2625	sub {
		2626	$status = $!;
		2627	$current->ready; undef $current;
		2628	},
		2629	sub {
		2630	Coro::schedule while defined $current;
		2631	$! = $status;
		2632	},
		2633	)
		2634	};
		2635
		2636	unless ($DB_ENV) {
		2637	$DB_ENV = BDB::db_env_create;
		2638
		2639	cf::sync_job {
		2640	eval {
		2641	BDB::db_env_open
		2642	$DB_ENV,
		2643	$BDB_ENV_DIR,
		2644	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2645	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2646	0666;
		2647
		2648	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2649
		2650	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2651	$DB_ENV->set_lk_detect;
		2652	};
		2653
		2654	cf::cleanup "db_env_open(db): $@" if $@;
		2655	};
		2656	}
		2657	}
		2658
		2659	{
		2660	IO::AIO::min_parallel 8;
		2661
		2662	undef $Coro::AIO::WATCHER;
		2663	IO::AIO::max_poll_time $TICK * 0.1;
		2664	$AIO_POLL_WATCHER = Event->io (
		2665	reentrant => 0,
		2666	data => WF_AUTOCANCEL,
		2667	fd => IO::AIO::poll_fileno,
		2668	poll => 'r',
		2669	prio => 6,
		2670	cb => \&IO::AIO::poll_cb,
		2671	);
		2672	}
		2673
		2674	END { cf::emergency_save }
865		2675
866	1	2676	1
867		2677

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