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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.61 by root, Sun Sep 3 22:45:56 2006 UTC vs.
Revision 1.208 by root, Mon Feb 12 00:27:20 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;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.5 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use BDB ();
		21	use Data::Dumper;
		22	use Digest::MD5;
		23	use Fcntl;
		24	use IO::AIO 2.32 ();
		25	use YAML::Syck ();
10	use Time::HiRes;	26	use Time::HiRes;
11	use Event;	27	use Compress::LZF;
		28
		29	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		30
12	$Event::Eval = 1; # no idea why this is required, but it is	31	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		32
14	use strict;	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		34
16	_reload_1;	35	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		36	$YAML::Syck::ImplicitUnicode = 1;
17		37
		38	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		39
18	our %COMMAND = ();	40	our %COMMAND = ();
		41	our %COMMAND_TIME = ();
		42
		43	our @EXTS = (); # list of extension package names
		44	our %EXTCMD = ();
		45	our %EXT_CORO = (); # coroutines bound to extensions
		46	our %EXT_MAP = (); # pluggable maps
		47
19	our @EVENT;	48	our @EVENT;
20	our %PROP_TYPE;	49	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		50
24	our $TICK = MAX_TIME * 1e-6;	51	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	52	our $TICK_WATCHER;
		53	our $AIO_POLL_WATCHER;
		54	our $WRITE_RUNTIME_WATCHER;
26	our $NEXT_TICK;	55	our $NEXT_TICK;
		56	our $NOW;
		57	our $USE_FSYNC = 1; # use fsync to write maps - default off
		58
		59	our $BDB_POLL_WATCHER;
		60	our $DB_ENV;
		61
		62	our %CFG;
		63
		64	our $UPTIME; $UPTIME ||= time;
		65	our $RUNTIME;
		66
		67	our %PLAYER; # all users
		68	our %MAP; # all maps
		69	our $LINK_MAP; # the special {link} map, which is always available
		70	our $RANDOM_MAPS = cf::localdir . "/random";
		71	our $BDB_ENV_DIR = cf::localdir . "/db";
		72
		73	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		74	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		75
		76	# used to convert map paths into valid unix filenames by replacing / by ∕
		77	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		78
		79	binmode STDOUT;
		80	binmode STDERR;
		81
		82	# read virtual server time, if available
		83	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		84	open my $fh, "<", cf::localdir . "/runtime"
		85	or die "unable to read runtime file: $!";
		86	$RUNTIME = <$fh> + 0.;
		87	}
		88
		89	mkdir cf::localdir;
		90	mkdir cf::localdir . "/" . cf::playerdir;
		91	mkdir cf::localdir . "/" . cf::tmpdir;
		92	mkdir cf::localdir . "/" . cf::uniquedir;
		93	mkdir $RANDOM_MAPS;
		94	mkdir $BDB_ENV_DIR;
		95
		96	our $EMERGENCY_POSITION;
		97
		98	sub cf::map::normalise;
		99
		100	#############################################################################
		101
		102	=head2 GLOBAL VARIABLES
		103
		104	=over 4
		105
		106	=item $cf::UPTIME
		107
		108	The timestamp of the server start (so not actually an uptime).
		109
		110	=item $cf::RUNTIME
		111
		112	The time this server has run, starts at 0 and is increased by $cf::TICK on
		113	every server tick.
		114
		115	=item $cf::LIBDIR
		116
		117	The perl library directory, where extensions and cf-specific modules can
		118	be found. It will be added to C<@INC> automatically.
		119
		120	=item $cf::NOW
		121
		122	The time of the last (current) server tick.
		123
		124	=item $cf::TICK
		125
		126	The interval between server ticks, in seconds.
		127
		128	=item %cf::CFG
		129
		130	Configuration for the server, loaded from C</etc/crossfire/config>, or
		131	from wherever your confdir points to.
		132
		133	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		134
		135	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		136	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		137	processing has been done. Call C<< ->wait >> on them to maximise the
		138	window of cpu time available, or simply to synchronise to the server tick.
		139
		140	=back
		141
		142	=cut
27		143
28	BEGIN {	144	BEGIN {
29	*CORE::GLOBAL::warn = sub {	145	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	146	my $msg = join "", @_;
		147	utf8::encode $msg;
		148
31	$msg .= "\n"	149	$msg .= "\n"
32	unless $msg =~ /\n$/;	150	unless $msg =~ /\n$/;
33		151
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	152	LOG llevError, $msg;
36	};	153	};
37	}	154	}
38		155
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	156	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		157	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	158	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	159	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	160	@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';	161	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		162
75	# we bless all objects into (empty) derived classes to force a method lookup	163	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	164	# 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)) {	165	for my $pkg (qw(
		166	cf::global cf::attachable
		167	cf::object cf::object::player
		168	cf::client cf::player
		169	cf::arch cf::living
		170	cf::map cf::party cf::region
		171	)) {
78	no strict 'refs';	172	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	173	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	174	}
81		175
82	$Event::DIED = sub {	176	$Event::DIED = sub {
83	warn "error in event callback: @_";	177	warn "error in event callback: @_";
84	};	178	};
85		179
86	my %ext_pkg;	180	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		181
92	#############################################################################	182	=over 4
93	# utility functions	183
		184	=item dumpval $ref
		185
		186	=cut
		187
		188	sub dumpval {
		189	eval {
		190	local $SIG{__DIE__};
		191	my $d;
		192	if (1) {
		193	$d = new Data::Dumper([$_[0]], ["*var"]);
		194	$d->Terse(1);
		195	$d->Indent(2);
		196	$d->Quotekeys(0);
		197	$d->Useqq(1);
		198	#$d->Bless(...);
		199	$d->Seen($_[1]) if @_ > 1;
		200	$d = $d->Dump();
		201	}
		202	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		203	$d
		204	} || "[unable to dump $_[0]: '$@']";
		205	}
94		206
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	207	use JSON::Syck (); # TODO# replace by JSON::PC once working
		208
		209	=item $ref = cf::from_json $json
		210
		211	Converts a JSON string into the corresponding perl data structure.
		212
		213	=cut
96		214
97	sub from_json($) {	215	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	216	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	217	JSON::Syck::Load $_[0]
100	}	218	}
101		219
		220	=item $json = cf::to_json $ref
		221
		222	Converts a perl data structure into its JSON representation.
		223
		224	=cut
		225
102	sub to_json($) {	226	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	227	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	228	JSON::Syck::Dump $_[0]
105	}	229	}
106		230
		231	=item cf::lock_wait $string
		232
		233	Wait until the given lock is available. See cf::lock_acquire.
		234
		235	=item my $lock = cf::lock_acquire $string
		236
		237	Wait until the given lock is available and then acquires it and returns
		238	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		239	for example when the coroutine gets canceled), the lock is automatically
		240	returned.
		241
		242	Lock names should begin with a unique identifier (for example, cf::map::find
		243	uses map_find and cf::map::load uses map_load).
		244
		245	=cut
		246
		247	our %LOCK;
		248
		249	sub lock_wait($) {
		250	my ($key) = @_;
		251
		252	# wait for lock, if any
		253	while ($LOCK{$key}) {
		254	push @{ $LOCK{$key} }, $Coro::current;
		255	Coro::schedule;
		256	}
		257	}
		258
		259	sub lock_acquire($) {
		260	my ($key) = @_;
		261
		262	# wait, to be sure we are not locked
		263	lock_wait $key;
		264
		265	$LOCK{$key} = [];
		266
		267	Coro::guard {
		268	# wake up all waiters, to be on the safe side
		269	$_->ready for @{ delete $LOCK{$key} };
		270	}
		271	}
		272
		273	sub freeze_mainloop {
		274	return unless $TICK_WATCHER->is_active;
		275
		276	my $guard = Coro::guard {
		277	$TICK_WATCHER->start;
		278	$WRITE_RUNTIME_WATCHER->start;
		279	};
		280	$WRITE_RUNTIME_WATCHER->stop;
		281	$TICK_WATCHER->stop;
		282	$guard
		283	}
		284
		285	=item cf::async { BLOCK }
		286
		287	Currently the same as Coro::async_pool, meaning you cannot use
		288	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		289	thing you are allowed to do is call C<prio> on it.
		290
		291	=cut
		292
		293	BEGIN { *async = \&Coro::async_pool }
		294
		295	=item cf::sync_job { BLOCK }
		296
		297	The design of crossfire+ requires that the main coro ($Coro::main) is
		298	always able to handle events or runnable, as crossfire+ is only partly
		299	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		300
		301	If it must be done, put the blocking parts into C<sync_job>. This will run
		302	the given BLOCK in another coroutine while waiting for the result. The
		303	server will be frozen during this time, so the block should either finish
		304	fast or be very important.
		305
		306	=cut
		307
		308	sub sync_job(&) {
		309	my ($job) = @_;
		310
		311	if ($Coro::current == $Coro::main) {
		312	# this is the main coro, too bad, we have to block
		313	# till the operation succeeds, freezing the server :/
		314
		315	# TODO: use suspend/resume instead
		316	# (but this is cancel-safe)
		317	my $freeze_guard = freeze_mainloop;
		318
		319	my $busy = 1;
		320	my @res;
		321
		322	(async {
		323	@res = eval { $job->() };
		324	warn $@ if $@;
		325	undef $busy;
		326	})->prio (Coro::PRIO_MAX);
		327
		328	while ($busy) {
		329	Coro::cede or Event::one_event;
		330	}
		331
		332	wantarray ? @res : $res[0]
		333	} else {
		334	# we are in another coroutine, how wonderful, everything just works
		335
		336	$job->()
		337	}
		338	}
		339
		340	=item $coro = cf::async_ext { BLOCK }
		341
		342	Like async, but this coro is automatically being canceled when the
		343	extension calling this is being unloaded.
		344
		345	=cut
		346
		347	sub async_ext(&) {
		348	my $cb = shift;
		349
		350	my $coro = &Coro::async ($cb);
		351
		352	$coro->on_destroy (sub {
		353	delete $EXT_CORO{$coro+0};
		354	});
		355	$EXT_CORO{$coro+0} = $coro;
		356
		357	$coro
		358	}
		359
		360	sub write_runtime {
		361	my $runtime = cf::localdir . "/runtime";
		362
		363	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		364	or return;
		365
		366	my $value = $cf::RUNTIME + 90 + 10;
		367	# 10 is the runtime save interval, for a monotonic clock
		368	# 60 allows for the watchdog to kill the server.
		369
		370	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		371	and return;
		372
		373	# always fsync - this file is important
		374	aio_fsync $fh
		375	and return;
		376
		377	close $fh
		378	or return;
		379
		380	aio_rename "$runtime~", $runtime
		381	and return;
		382
		383	1
		384	}
		385
		386	=back
		387
		388	=cut
		389
107	#############################################################################	390	#############################################################################
108	# "new" plug-in system
109		391
110	=head3 EVENTS AND OBJECT ATTACHMENTS	392	=head2 ATTACHABLE OBJECTS
		393
		394	Many objects in crossfire are so-called attachable objects. That means you can
		395	attach callbacks/event handlers (a collection of which is called an "attachment")
		396	to it. All such attachable objects support the following methods.
		397
		398	In the following description, CLASS can be any of C<global>, C<object>
		399	C<player>, C<client> or C<map> (i.e. the attachable objects in
		400	crossfire+).
111		401
112	=over 4	402	=over 4
113		403
114	=item $object->attach ($attachment, key => $value...)
115
116	=item $object->detach ($attachment)
117
118	Attach/detach a pre-registered attachment to an object.
119
120	=item $player->attach ($attachment, key => $value...)
121
122	=item $player->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to a player.
125
126	=item $map->attach ($attachment, key => $value...)	404	=item $attachable->attach ($attachment, key => $value...)
127		405
128	=item $map->detach ($attachment)	406	=item $attachable->detach ($attachment)
129		407
130	Attach/detach a pre-registered attachment to a map.	408	Attach/detach a pre-registered attachment to a specific object and give it
		409	the specified key/value pairs as arguments.
131		410
132	=item $bool = $object->attached ($name)	411	Example, attach a minesweeper attachment to the given object, making it a
		412	10x10 minesweeper game:
133		413
134	=item $bool = $player->attached ($name)	414	$obj->attach (minesweeper => width => 10, height => 10);
135		415
136	=item $bool = $map->attached ($name)	416	=item $bool = $attachable->attached ($name)
137		417
138	Checks wether the named attachment is currently attached to the object.	418	Checks wether the named attachment is currently attached to the object.
139		419
140	=item cf::attach_global ...	420	=item cf::CLASS->attach ...
141		421
142	Attach handlers for global events.	422	=item cf::CLASS->detach ...
143		423
144	This and all following C<attach_*>-functions expect any number of the	424	Define an anonymous attachment and attach it to all objects of the given
145	following handler/hook descriptions:	425	CLASS. See the next function for an explanation of its arguments.
		426
		427	You can attach to global events by using the C<cf::global> class.
		428
		429	Example, log all player logins:
		430
		431	cf::player->attach (
		432	on_login => sub {
		433	my ($pl) = @_;
		434	...
		435	},
		436	);
		437
		438	Example, attach to the jeweler skill:
		439
		440	cf::object->attach (
		441	type => cf::SKILL,
		442	subtype => cf::SK_JEWELER,
		443	on_use_skill => sub {
		444	my ($sk, $ob, $part, $dir, $msg) = @_;
		445	...
		446	},
		447	);
		448
		449	=item cf::CLASS::attachment $name, ...
		450
		451	Register an attachment by C<$name> through which attachable objects of the
		452	given CLASS can refer to this attachment.
		453
		454	Some classes such as crossfire maps and objects can specify attachments
		455	that are attached at load/instantiate time, thus the need for a name.
		456
		457	These calls expect any number of the following handler/hook descriptions:
146		458
147	=over 4	459	=over 4
148		460
149	=item prio => $number	461	=item prio => $number
150		462
…		…
152	by another C<prio> setting). Lower priority handlers get executed	464	by another C<prio> setting). Lower priority handlers get executed
153	earlier. The default priority is C<0>, and many built-in handlers are	465	earlier. The default priority is C<0>, and many built-in handlers are
154	registered at priority C<-1000>, so lower priorities should not be used	466	registered at priority C<-1000>, so lower priorities should not be used
155	unless you know what you are doing.	467	unless you know what you are doing.
156		468
		469	=item type => $type
		470
		471	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		472	given type of objects only (the additional parameter C<subtype> can be
		473	used to further limit to the given subtype).
		474
157	=item on_I<event> => \&cb	475	=item on_I<event> => \&cb
158		476
159	Call the given code reference whenever the named event happens (event is	477	Call the given code reference whenever the named event happens (event is
160	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	478	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
161	handlers are recognised generally depends on the type of object these	479	handlers are recognised generally depends on the type of object these
…		…
170	package and register them. Only handlers for eevents supported by the	488	package and register them. Only handlers for eevents supported by the
171	object/class are recognised.	489	object/class are recognised.
172		490
173	=back	491	=back
174		492
175	=item cf::attach_to_type $object_type, $subtype, ...	493	Example, define an attachment called "sockpuppet" that calls the given
		494	event handler when a monster attacks:
176		495
177	Attach handlers for a specific object type (e.g. TRANSPORT) and	496	cf::object::attachment sockpuppet =>
178	subtype. If C<$subtype> is zero or undef, matches all objects of the given	497	on_skill_attack => sub {
179	type.	498	my ($self, $victim) = @_;
180		499	...
181	=item cf::attach_to_objects ...
182
183	Attach handlers to all objects. Do not use this except for debugging or
184	very rare events, as handlers are (obviously) called for I<all> objects in
185	the game.
186
187	=item cf::attach_to_players ...
188
189	Attach handlers to all players.
190
191	=item cf::attach_to_maps ...
192
193	Attach handlers to all maps.
194
195	=item cf:register_attachment $name, ...
196
197	Register an attachment by name through which objects can refer to this
198	attachment.
199
200	=item cf:register_player_attachment $name, ...
201
202	Register an attachment by name through which players can refer to this
203	attachment.
204
205	=item cf:register_map_attachment $name, ...
206
207	Register an attachment by name through which maps can refer to this
208	attachment.
209
210	=cut
211
212	# the following variables are defined in .xs and must not be re-created
213	our @CB_GLOBAL = (); # registry for all global events
214	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
215	our @CB_PLAYER = ();
216	our @CB_TYPE = (); # registry for type (cf-object class) based events
217	our @CB_MAP = ();
218
219	my %attachment;
220
221	sub _attach_cb($\%$$$) {
222	my ($registry, $undo, $event, $prio, $cb) = @_;
223
224	use sort 'stable';
225
226	$cb = [$prio, $cb];
227
228	@{$registry->[$event]} = sort
229	{ $a->[0] cmp $b->[0] }
230	@{$registry->[$event] || []}, $cb;
231
232	push @{$undo->{cb}}, [$event, $cb];
233	}
234
235	# attach handles attaching event callbacks
236	# the only thing the caller has to do is pass the correct
237	# registry (== where the callback attaches to).
238	sub _attach(\@$@) {
239	my ($registry, $klass, @arg) = @_;
240
241	my $prio = 0;
242
243	my %undo = (
244	registry => $registry,
245	cb => [],
246	);
247
248	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
249
250	while (@arg) {
251	my $type = shift @arg;
252
253	if ($type eq "prio") {
254	$prio = shift @arg;
255
256	} elsif ($type eq "package") {
257	my $pkg = shift @arg;
258
259	while (my ($name, $id) = each %cb_id) {
260	if (my $cb = $pkg->can ($name)) {
261	_attach_cb $registry, %undo, $id, $prio, $cb;
262	}
263	}	500	}
264
265	} elsif (exists $cb_id{$type}) {
266	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
267
268	} elsif (ref $type) {
269	warn "attaching objects not supported, ignoring.\n";
270
271	} else {
272	shift @arg;
273	warn "attach argument '$type' not supported, ignoring.\n";
274	}
275	}
276
277	\%undo
278	}
279
280	sub _attach_attachment {
281	my ($obj, $name, %arg) = @_;
282
283	return if exists $obj->{_attachment}{$name};
284
285	my $res;
286
287	if (my $attach = $attachment{$name}) {
288	my $registry = $obj->registry;
289
290	for (@$attach) {
291	my ($klass, @attach) = @$_;
292	$res = _attach @$registry, $klass, @attach;
293	}
294
295	$obj->{$name} = \%arg;
296	} else {
297	warn "object uses attachment '$name' that is not available, postponing.\n";
298	}
299
300	$obj->{_attachment}{$name} = undef;
301
302	$res->{attachment} = $name;
303	$res
304	}
305
306	*cf::object::attach =
307	*cf::player::attach =
308	*cf::map::attach = sub {
309	my ($obj, $name, %arg) = @_;
310
311	_attach_attachment $obj, $name, %arg;
312	};
313
314	# all those should be optimised
315	*cf::object::detach =
316	*cf::player::detach =
317	*cf::map::detach = sub {
318	my ($obj, $name) = @_;
319
320	delete $obj->{_attachment}{$name};
321	reattach ($obj);
322	};
323
324	*cf::object::attached =
325	*cf::player::attached =
326	*cf::map::attached = sub {
327	my ($obj, $name) = @_;
328
329	exists $obj->{_attachment}{$name}
330	};
331
332	sub attach_global {
333	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
334	}
335
336	sub attach_to_type {
337	my $type = shift;
338	my $subtype = shift;
339
340	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
341	}
342
343	sub attach_to_objects {
344	_attach @CB_OBJECT, KLASS_OBJECT, @_
345	}
346
347	sub attach_to_players {
348	_attach @CB_PLAYER, KLASS_PLAYER, @_
349	}
350
351	sub attach_to_maps {
352	_attach @CB_MAP, KLASS_MAP, @_
353	}
354
355	sub register_attachment {
356	my $name = shift;
357
358	$attachment{$name} = [[KLASS_OBJECT, @_]];
359	}
360
361	sub register_player_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_PLAYER, @_]];
365	}
366
367	sub register_map_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_MAP, @_]];
371	}
372
373	our $override;
374	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
375
376	sub override {
377	$override = 1;
378	@invoke_results = ();
379	}
380
381	sub do_invoke {
382	my $event = shift;
383	my $callbacks = shift;
384
385	@invoke_results = ();
386
387	local $override;
388
389	for (@$callbacks) {
390	eval { &{$_->[1]} };
391
392	if ($@) {
393	warn "$@";
394	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
395	override;
396	}
397
398	return 1 if $override;
399	}
400
401	0	501	}
402	}
403		502
404	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	503	=item $attachable->valid
405
406	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
407
408	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
409
410	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
411
412	Generate a global/object/player/map-specific event with the given arguments.
413
414	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
415	removed in future versions), and there is no public API to access override
416	results (if you must, access C<@cf::invoke_results> directly).
417
418	=back
419
420	=head2 methods valid for all pointers
421
422	=over 4
423
424	=item $object->valid
425
426	=item $player->valid
427
428	=item $map->valid
429		504
430	Just because you have a perl object does not mean that the corresponding	505	Just because you have a perl object does not mean that the corresponding
431	C-level object still exists. If you try to access an object that has no	506	C-level object still exists. If you try to access an object that has no
432	valid C counterpart anymore you get an exception at runtime. This method	507	valid C counterpart anymore you get an exception at runtime. This method
433	can be used to test for existence of the C object part without causing an	508	can be used to test for existence of the C object part without causing an
434	exception.	509	exception.
435		510
		511	=cut
		512
		513	# the following variables are defined in .xs and must not be re-created
		514	our @CB_GLOBAL = (); # registry for all global events
		515	our @CB_ATTACHABLE = (); # registry for all attachables
		516	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		517	our @CB_PLAYER = ();
		518	our @CB_CLIENT = ();
		519	our @CB_TYPE = (); # registry for type (cf-object class) based events
		520	our @CB_MAP = ();
		521
		522	my %attachment;
		523
		524	sub cf::attachable::thawer_merge {
		525	# simply override everything except _meta
		526	local $_[0]{_meta};
		527	%{$_[0]} = %{$_[1]};
		528	}
		529
		530	sub _attach_cb($$$$) {
		531	my ($registry, $event, $prio, $cb) = @_;
		532
		533	use sort 'stable';
		534
		535	$cb = [$prio, $cb];
		536
		537	@{$registry->[$event]} = sort
		538	{ $a->[0] cmp $b->[0] }
		539	@{$registry->[$event] || []}, $cb;
		540	}
		541
		542	# hack
		543	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		544
		545	# attach handles attaching event callbacks
		546	# the only thing the caller has to do is pass the correct
		547	# registry (== where the callback attaches to).
		548	sub _attach {
		549	my ($registry, $klass, @arg) = @_;
		550
		551	my $object_type;
		552	my $prio = 0;
		553	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		554
		555	#TODO: get rid of this hack
		556	if ($attachable_klass{$klass}) {
		557	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		558	}
		559
		560	while (@arg) {
		561	my $type = shift @arg;
		562
		563	if ($type eq "prio") {
		564	$prio = shift @arg;
		565
		566	} elsif ($type eq "type") {
		567	$object_type = shift @arg;
		568	$registry = $CB_TYPE[$object_type] ||= [];
		569
		570	} elsif ($type eq "subtype") {
		571	defined $object_type or Carp::croak "subtype specified without type";
		572	my $object_subtype = shift @arg;
		573	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		574
		575	} elsif ($type eq "package") {
		576	my $pkg = shift @arg;
		577
		578	while (my ($name, $id) = each %cb_id) {
		579	if (my $cb = $pkg->can ($name)) {
		580	_attach_cb $registry, $id, $prio, $cb;
		581	}
		582	}
		583
		584	} elsif (exists $cb_id{$type}) {
		585	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		586
		587	} elsif (ref $type) {
		588	warn "attaching objects not supported, ignoring.\n";
		589
		590	} else {
		591	shift @arg;
		592	warn "attach argument '$type' not supported, ignoring.\n";
		593	}
		594	}
		595	}
		596
		597	sub _object_attach {
		598	my ($obj, $name, %arg) = @_;
		599
		600	return if exists $obj->{_attachment}{$name};
		601
		602	if (my $attach = $attachment{$name}) {
		603	my $registry = $obj->registry;
		604
		605	for (@$attach) {
		606	my ($klass, @attach) = @$_;
		607	_attach $registry, $klass, @attach;
		608	}
		609
		610	$obj->{$name} = \%arg;
		611	} else {
		612	warn "object uses attachment '$name' that is not available, postponing.\n";
		613	}
		614
		615	$obj->{_attachment}{$name} = undef;
		616	}
		617
		618	sub cf::attachable::attach {
		619	if (ref $_[0]) {
		620	_object_attach @_;
		621	} else {
		622	_attach shift->_attach_registry, @_;
		623	}
		624	};
		625
		626	# all those should be optimised
		627	sub cf::attachable::detach {
		628	my ($obj, $name) = @_;
		629
		630	if (ref $obj) {
		631	delete $obj->{_attachment}{$name};
		632	reattach ($obj);
		633	} else {
		634	Carp::croak "cannot, currently, detach class attachments";
		635	}
		636	};
		637
		638	sub cf::attachable::attached {
		639	my ($obj, $name) = @_;
		640
		641	exists $obj->{_attachment}{$name}
		642	}
		643
		644	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		645	eval "#line " . __LINE__ . " 'cf.pm'
		646	sub cf::\L$klass\E::_attach_registry {
		647	(\\\@CB_$klass, KLASS_$klass)
		648	}
		649
		650	sub cf::\L$klass\E::attachment {
		651	my \$name = shift;
		652
		653	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		654	}
		655	";
		656	die if $@;
		657	}
		658
		659	our $override;
		660	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		661
		662	sub override {
		663	$override = 1;
		664	@invoke_results = ();
		665	}
		666
		667	sub do_invoke {
		668	my $event = shift;
		669	my $callbacks = shift;
		670
		671	@invoke_results = ();
		672
		673	local $override;
		674
		675	for (@$callbacks) {
		676	eval { &{$_->[1]} };
		677
		678	if ($@) {
		679	warn "$@";
		680	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		681	override;
		682	}
		683
		684	return 1 if $override;
		685	}
		686
		687	0
		688	}
		689
		690	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		691
		692	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		693
		694	Generate an object-specific event with the given arguments.
		695
		696	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		697	removed in future versions), and there is no public API to access override
		698	results (if you must, access C<@cf::invoke_results> directly).
		699
436	=back	700	=back
437		701
438	=cut	702	=cut
439
440	*cf::object::valid =
441	*cf::player::valid =
442	*cf::map::valid = \&cf::_valid;
443		703
444	#############################################################################	704	#############################################################################
445	# object support	705	# object support
446		706
447	sub instantiate {
448	my ($obj, $data) = @_;
449
450	$data = from_json $data;
451
452	for (@$data) {
453	my ($name, $args) = @$_;
454
455	$obj->attach ($name, %{$args || {} });
456	}
457	}
458
459	# basically do the same as instantiate, without calling instantiate
460	sub reattach {	707	sub reattach {
		708	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	709	my ($obj) = @_;
		710
		711	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		712
462	my $registry = $obj->registry;	713	my $registry = $obj->registry;
463		714
464	@$registry = ();	715	@$registry = ();
465		716
466	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	717	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
467		718
468	for my $name (keys %{ $obj->{_attachment} || {} }) {	719	for my $name (keys %{ $obj->{_attachment} || {} }) {
469	if (my $attach = $attachment{$name}) {	720	if (my $attach = $attachment{$name}) {
470	for (@$attach) {	721	for (@$attach) {
471	my ($klass, @attach) = @$_;	722	my ($klass, @attach) = @$_;
472	_attach @$registry, $klass, @attach;	723	_attach $registry, $klass, @attach;
473	}	724	}
474	} else {	725	} else {
475	warn "object uses attachment '$name' that is not available, postponing.\n";	726	warn "object uses attachment '$name' that is not available, postponing.\n";
476	}	727	}
477	}	728	}
478	}	729	}
479		730
480	sub object_freezer_save {	731	cf::attachable->attach (
481	my ($filename, $rdata, $objs) = @_;
482
483	if (length $$rdata) {
484	warn sprintf "saving %s (%d,%d)\n",
485	$filename, length $$rdata, scalar @$objs;
486
487	if (open my $fh, ">:raw", "$filename~") {
488	chmod SAVE_MODE, $fh;
489	syswrite $fh, $$rdata;
490	close $fh;
491
492	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
493	chmod SAVE_MODE, $fh;
494	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
495	close $fh;
496	rename "$filename.pst~", "$filename.pst";
497	} else {
498	unlink "$filename.pst";
499	}
500
501	rename "$filename~", $filename;
502	} else {
503	warn "FATAL: $filename~: $!\n";
504	}
505	} else {
506	unlink $filename;
507	unlink "$filename.pst";
508	}
509	}
510
511	sub object_thawer_load {
512	my ($filename) = @_;
513
514	local $/;
515
516	my $av;
517
518	#TODO: use sysread etc.
519	if (open my $data, "<:raw:perlio", $filename) {
520	$data = <$data>;
521	if (open my $pst, "<:raw:perlio", "$filename.pst") {
522	$av = eval { (Storable::thaw <$pst>)->{objs} };
523	}
524	return ($data, $av);
525	}
526
527	()
528	}
529
530	attach_to_objects
531	prio => -1000000,	732	prio => -1000000,
		733	on_instantiate => sub {
		734	my ($obj, $data) = @_;
		735
		736	$data = from_json $data;
		737
		738	for (@$data) {
		739	my ($name, $args) = @$_;
		740
		741	$obj->attach ($name, %{$args || {} });
		742	}
		743	},
		744	on_reattach => \&reattach,
532	on_clone => sub {	745	on_clone => sub {
533	my ($src, $dst) = @_;	746	my ($src, $dst) = @_;
534		747
535	@{$dst->registry} = @{$src->registry};	748	@{$dst->registry} = @{$src->registry};
536		749
537	%$dst = %$src;	750	%$dst = %$src;
538		751
539	%{$dst->{_attachment}} = %{$src->{_attachment}}	752	%{$dst->{_attachment}} = %{$src->{_attachment}}
540	if exists $src->{_attachment};	753	if exists $src->{_attachment};
541	},	754	},
542	;	755	);
		756
		757	sub object_freezer_save {
		758	my ($filename, $rdata, $objs) = @_;
		759
		760	sync_job {
		761	if (length $$rdata) {
		762	warn sprintf "saving %s (%d,%d)\n",
		763	$filename, length $$rdata, scalar @$objs;
		764
		765	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		766	chmod SAVE_MODE, $fh;
		767	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		768	aio_fsync $fh if $cf::USE_FSYNC;
		769	close $fh;
		770
		771	if (@$objs) {
		772	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		773	chmod SAVE_MODE, $fh;
		774	my $data = Storable::nfreeze { version => 1, objs => $objs };
		775	aio_write $fh, 0, (length $data), $data, 0;
		776	aio_fsync $fh if $cf::USE_FSYNC;
		777	close $fh;
		778	aio_rename "$filename.pst~", "$filename.pst";
		779	}
		780	} else {
		781	aio_unlink "$filename.pst";
		782	}
		783
		784	aio_rename "$filename~", $filename;
		785	} else {
		786	warn "FATAL: $filename~: $!\n";
		787	}
		788	} else {
		789	aio_unlink $filename;
		790	aio_unlink "$filename.pst";
		791	}
		792
		793	#d##TODO# nuke non .map-files if exist
		794	if ($filename =~ s/\.map$//) {
		795	aio_unlink $filename;
		796	aio_unlink "$filename.pst";
		797	}
		798	}
		799	}
		800
		801	sub object_freezer_as_string {
		802	my ($rdata, $objs) = @_;
		803
		804	use Data::Dumper;
		805
		806	$$rdata . Dumper $objs
		807	}
		808
		809	sub object_thawer_load {
		810	my ($filename) = @_;
		811
		812	my ($data, $av);
		813
		814	#d#TODO remove .map if file does not exist
		815	aio_stat $filename and $filename =~ s/\.map$//;
		816
		817	(aio_load $filename, $data) >= 0
		818	or return;
		819
		820	unless (aio_stat "$filename.pst") {
		821	(aio_load "$filename.pst", $av) >= 0
		822	or return;
		823	$av = eval { (Storable::thaw $av)->{objs} };
		824	}
		825
		826	warn sprintf "loading %s (%d)\n",
		827	$filename, length $data, scalar @{$av || []};#d#
		828	return ($data, $av);
		829	}
543		830
544	#############################################################################	831	#############################################################################
545	# old plug-in events	832	# command handling &c
546		833
547	sub inject_event {	834	=item cf::register_command $name => \&callback($ob,$args);
548	my $extension = shift;
549	my $event_code = shift;
550		835
551	my $cb = $hook[$event_code]{$extension}	836	Register a callback for execution when the client sends the user command
552	or return;	837	$name.
553		838
554	&$cb	839	=cut
555	}
556
557	sub inject_global_event {
558	my $event = shift;
559
560	my $cb = $hook[$event]
561	or return;
562
563	List::Util::max map &$_, values %$cb
564	}
565
566	sub inject_command {
567	my ($name, $obj, $params) = @_;
568
569	for my $cmd (@{ $command{$name} }) {
570	$cmd->[1]->($obj, $params);
571	}
572
573	-1
574	}
575		840
576	sub register_command {	841	sub register_command {
577	my ($name, $time, $cb) = @_;	842	my ($name, $cb) = @_;
578		843
579	my $caller = caller;	844	my $caller = caller;
580	#warn "registering command '$name/$time' to '$caller'";	845	#warn "registering command '$name/$time' to '$caller'";
581		846
582	push @{ $command{$name} }, [$time, $cb, $caller];	847	push @{ $COMMAND{$name} }, [$caller, $cb];
583	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
584	}	848	}
		849
		850	=item cf::register_extcmd $name => \&callback($pl,$packet);
		851
		852	Register a callbackf ro execution when the client sends an extcmd packet.
		853
		854	If the callback returns something, it is sent back as if reply was being
		855	called.
		856
		857	=cut
585		858
586	sub register_extcmd {	859	sub register_extcmd {
587	my ($name, $cb) = @_;	860	my ($name, $cb) = @_;
588		861
589	my $caller = caller;	862	$EXTCMD{$name} = $cb;
590	#warn "registering extcmd '$name' to '$caller'";
591
592	$extcmd{$name} = [$cb, $caller];
593	}	863	}
594		864
595	sub register {	865	cf::player->attach (
596	my ($base, $pkg) = @_;	866	on_command => sub {
		867	my ($pl, $name, $params) = @_;
597		868
598	#TODO	869	my $cb = $COMMAND{$name}
599	}	870	or return;
		871
		872	for my $cmd (@$cb) {
		873	$cmd->[1]->($pl->ob, $params);
		874	}
		875
		876	cf::override;
		877	},
		878	on_extcmd => sub {
		879	my ($pl, $buf) = @_;
		880
		881	my $msg = eval { from_json $buf };
		882
		883	if (ref $msg) {
		884	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		885	if (my %reply = $cb->($pl, $msg)) {
		886	$pl->ext_reply ($msg->{msgid}, %reply);
		887	}
		888	}
		889	} else {
		890	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		891	}
		892
		893	cf::override;
		894	},
		895	);
600		896
601	sub load_extension {	897	sub load_extension {
602	my ($path) = @_;	898	my ($path) = @_;
603		899
604	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	900	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
605	my $base = $1;	901	my $base = $1;
606	my $pkg = $1;	902	my $pkg = $1;
607	$pkg =~ s/[^[:word:]]/_/g;	903	$pkg =~ s/[^[:word:]]/_/g;
608	$pkg = "ext::$pkg";	904	$pkg = "ext::$pkg";
609		905
610	warn "loading '$path' into '$pkg'\n";	906	warn "... loading '$path' into '$pkg'\n";
611		907
612	open my $fh, "<:utf8", $path	908	open my $fh, "<:utf8", $path
613	or die "$path: $!";	909	or die "$path: $!";
614		910
615	my $source =	911	my $source =
616	"package $pkg; use strict; use utf8;\n"	912	"package $pkg; use strict; use utf8;\n"
617	. "#line 1 \"$path\"\n{\n"	913	. "#line 1 \"$path\"\n{\n"
618	. (do { local $/; <$fh> })	914	. (do { local $/; <$fh> })
619	. "\n};\n1";	915	. "\n};\n1";
620		916
621	eval $source	917	unless (eval $source) {
622	or die "$path: $@";	918	my $msg = $@ ? "$path: $@\n"
623		919	: "extension disabled.\n";
624	push @exts, $pkg;	920	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
625	$ext_pkg{$base} = $pkg;	921	warn $@;
626		922	warn "mandatory extension failed to load, exiting.\n";
627	# no strict 'refs';	923	exit 1;
628	# @{"$pkg\::ISA"} = ext::;	924	}
629		925	die $@;
630	register $base, $pkg;
631	}
632
633	sub unload_extension {
634	my ($pkg) = @_;
635
636	warn "removing extension $pkg\n";
637
638	# remove hooks
639	#TODO
640	# for my $idx (0 .. $#PLUGIN_EVENT) {
641	# delete $hook[$idx]{$pkg};
642	# }	926	}
643		927
644	# remove commands	928	push @EXTS, $pkg;
645	for my $name (keys %command) {
646	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
647
648	if (@cb) {
649	$command{$name} = \@cb;
650	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
651	} else {
652	delete $command{$name};
653	delete $COMMAND{"$name\000"};
654	}
655	}
656
657	# remove extcmds
658	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
659	delete $extcmd{$name};
660	}
661
662	if (my $cb = $pkg->can ("unload")) {
663	eval {
664	$cb->($pkg);
665	1
666	} or warn "$pkg unloaded, but with errors: $@";
667	}
668
669	Symbol::delete_package $pkg;
670	}	929	}
671		930
672	sub load_extensions {	931	sub load_extensions {
673	my $LIBDIR = maps_directory "perl";
674
675	for my $ext (<$LIBDIR/*.ext>) {	932	for my $ext (<$LIBDIR/*.ext>) {
676	next unless -r $ext;	933	next unless -r $ext;
677	eval {	934	eval {
678	load_extension $ext;	935	load_extension $ext;
679	1	936	1
680	} or warn "$ext not loaded: $@";	937	} or warn "$ext not loaded: $@";
681	}	938	}
682	}	939	}
683		940
684	sub _perl_reload(&) {	941	#############################################################################
		942
		943	=head2 CORE EXTENSIONS
		944
		945	Functions and methods that extend core crossfire objects.
		946
		947	=cut
		948
		949	package cf::player;
		950
		951	use Coro::AIO;
		952
		953	=head3 cf::player
		954
		955	=over 4
		956
		957	=item cf::player::find $login
		958
		959	Returns the given player object, loading it if necessary (might block).
		960
		961	=cut
		962
		963	sub playerdir($) {
		964	cf::localdir
		965	. "/"
		966	. cf::playerdir
		967	. "/"
		968	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		969	}
		970
		971	sub path($) {
		972	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		973
		974	(playerdir $login) . "/$login.pl"
		975	}
		976
		977	sub find_active($) {
		978	$cf::PLAYER{$_[0]}
		979	and $cf::PLAYER{$_[0]}->active
		980	and $cf::PLAYER{$_[0]}
		981	}
		982
		983	sub exists($) {
		984	my ($login) = @_;
		985
		986	$cf::PLAYER{$login}
		987	or cf::sync_job { !aio_stat path $login }
		988	}
		989
		990	sub find($) {
		991	return $cf::PLAYER{$_[0]} || do {
		992	my $login = $_[0];
		993
		994	my $guard = cf::lock_acquire "user_find:$login";
		995
		996	$cf::PLAYER{$_[0]} || do {
		997	my $pl = load_pl path $login
		998	or return;
		999	$cf::PLAYER{$login} = $pl
		1000	}
		1001	}
		1002	}
		1003
		1004	sub save($) {
		1005	my ($pl) = @_;
		1006
		1007	return if $pl->{deny_save};
		1008
		1009	my $path = path $pl;
		1010	my $guard = cf::lock_acquire "user_save:$path";
		1011
		1012	return if $pl->{deny_save};
		1013
		1014	aio_mkdir playerdir $pl, 0770;
		1015	$pl->{last_save} = $cf::RUNTIME;
		1016
		1017	$pl->save_pl ($path);
		1018	Coro::cede;
		1019	}
		1020
		1021	sub new($) {
		1022	my ($login) = @_;
		1023
		1024	my $self = create;
		1025
		1026	$self->ob->name ($login);
		1027	$self->{deny_save} = 1;
		1028
		1029	$cf::PLAYER{$login} = $self;
		1030
		1031	$self
		1032	}
		1033
		1034	=item $pl->quit_character
		1035
		1036	Nukes the player without looking back. If logged in, the connection will
		1037	be destroyed. May block for a long time.
		1038
		1039	=cut
		1040
		1041	sub quit_character {
		1042	my ($pl) = @_;
		1043
		1044	$pl->{deny_save} = 1;
		1045	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1046
		1047	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1048	$pl->deactivate;
		1049	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1050	$pl->ns->destroy if $pl->ns;
		1051
		1052	my $path = playerdir $pl;
		1053	my $temp = "$path~$cf::RUNTIME~deleting~";
		1054	aio_rename $path, $temp;
		1055	delete $cf::PLAYER{$pl->ob->name};
		1056	$pl->destroy;
		1057	IO::AIO::aio_rmtree $temp;
		1058	}
		1059
		1060	=item cf::player::list_logins
		1061
		1062	Returns am arrayref of all valid playernames in the system, can take a
		1063	while and may block, so not sync_job-capable, ever.
		1064
		1065	=cut
		1066
		1067	sub list_logins {
		1068	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1069	or return [];
		1070
		1071	my @logins;
		1072
		1073	for my $login (@$dirs) {
		1074	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1075	aio_read $fh, 0, 512, my $buf, 0 or next;
		1076	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1077
		1078	utf8::decode $login;
		1079	push @logins, $login;
		1080	}
		1081
		1082	\@logins
		1083	}
		1084
		1085	=item $player->maps
		1086
		1087	Returns an arrayref of map paths that are private for this
		1088	player. May block.
		1089
		1090	=cut
		1091
		1092	sub maps($) {
		1093	my ($pl) = @_;
		1094
		1095	$pl = ref $pl ? $pl->ob->name : $pl;
		1096
		1097	my $files = aio_readdir playerdir $pl
		1098	or return;
		1099
		1100	my @paths;
		1101
		1102	for (@$files) {
		1103	utf8::decode $_;
		1104	next if /\.(?:pl|pst)$/;
		1105	next unless /^$PATH_SEP/o;
		1106
		1107	push @paths, cf::map::normalise "~$pl/$_";
		1108	}
		1109
		1110	\@paths
		1111	}
		1112
		1113	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1114
		1115	Sends an ext reply to the player.
		1116
		1117	=cut
		1118
		1119	sub ext_reply($$$%) {
		1120	my ($self, $id, %msg) = @_;
		1121
		1122	$msg{msgid} = $id;
		1123
		1124	$self->send ("ext " . cf::to_json \%msg);
		1125	}
		1126
		1127	package cf;
		1128
		1129	=back
		1130
		1131
		1132	=head3 cf::map
		1133
		1134	=over 4
		1135
		1136	=cut
		1137
		1138	package cf::map;
		1139
		1140	use Fcntl;
		1141	use Coro::AIO;
		1142
		1143	use overload
		1144	'""' => \&as_string,
		1145	fallback => 1;
		1146
		1147	our $MAX_RESET = 3600;
		1148	our $DEFAULT_RESET = 3000;
		1149
		1150	sub generate_random_map {
		1151	my ($self, $rmp) = @_;
		1152	# mit "rum" bekleckern, nicht
		1153	$self->_create_random_map (
		1154	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1155	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1156	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1157	$rmp->{exit_on_final_map},
		1158	$rmp->{xsize}, $rmp->{ysize},
		1159	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1160	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1161	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1162	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1163	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1164	(cf::region::find $rmp->{region}), $rmp->{custom}
		1165	)
		1166	}
		1167
		1168	=item cf::map->register ($regex, $prio)
		1169
		1170	Register a handler for the map path matching the given regex at the
		1171	givne priority (higher is better, built-in handlers have priority 0, the
		1172	default).
		1173
		1174	=cut
		1175
		1176	sub register {
		1177	my (undef, $regex, $prio) = @_;
		1178	my $pkg = caller;
		1179
		1180	no strict;
		1181	push @{"$pkg\::ISA"}, __PACKAGE__;
		1182
		1183	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1184	}
		1185
		1186	# also paths starting with '/'
		1187	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1188
		1189	sub thawer_merge {
		1190	my ($self, $merge) = @_;
		1191
		1192	# we have to keep some variables in memory intact
		1193	local $self->{path};
		1194	local $self->{load_path};
		1195	local $self->{deny_save};
		1196	local $self->{deny_reset};
		1197
		1198	$self->SUPER::thawer_merge ($merge);
		1199	}
		1200
		1201	sub normalise {
		1202	my ($path, $base) = @_;
		1203
		1204	$path = "$path"; # make sure its a string
		1205
		1206	$path =~ s/\.map$//;
		1207
		1208	# map plan:
		1209	#
		1210	# /! non-realised random map exit (special hack!)
		1211	# {... are special paths that are not being touched
		1212	# ?xxx/... are special absolute paths
		1213	# ?random/... random maps
		1214	# /... normal maps
		1215	# ~user/... per-player map of a specific user
		1216
		1217	$path =~ s/$PATH_SEP/\//go;
		1218
		1219	# treat it as relative path if it starts with
		1220	# something that looks reasonable
		1221	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1222	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1223
		1224	$base =~ s{[^/]+/?$}{};
		1225	$path = "$base/$path";
		1226	}
		1227
		1228	for ($path) {
		1229	redo if s{//}{/};
		1230	redo if s{/\.?/}{/};
		1231	redo if s{/[^/]+/\.\./}{/};
		1232	}
		1233
		1234	$path
		1235	}
		1236
		1237	sub new_from_path {
		1238	my (undef, $path, $base) = @_;
		1239
		1240	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1241
		1242	$path = normalise $path, $base;
		1243
		1244	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1245	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1246	my $self = bless cf::map::new, $pkg;
		1247	$self->{path} = $path; $self->path ($path);
		1248	$self->init; # pass $1 etc.
		1249	return $self;
		1250	}
		1251	}
		1252
		1253	Carp::carp "unable to resolve path '$path' (base '$base').";
		1254	()
		1255	}
		1256
		1257	sub init {
		1258	my ($self) = @_;
		1259
		1260	$self
		1261	}
		1262
		1263	sub as_string {
		1264	my ($self) = @_;
		1265
		1266	"$self->{path}"
		1267	}
		1268
		1269	# the displayed name, this is a one way mapping
		1270	sub visible_name {
		1271	&as_string
		1272	}
		1273
		1274	# the original (read-only) location
		1275	sub load_path {
		1276	my ($self) = @_;
		1277
		1278	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1279	}
		1280
		1281	# the temporary/swap location
		1282	sub save_path {
		1283	my ($self) = @_;
		1284
		1285	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1286	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1287	}
		1288
		1289	# the unique path, undef == no special unique path
		1290	sub uniq_path {
		1291	my ($self) = @_;
		1292
		1293	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1294	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1295	}
		1296
		1297	# and all this just because we cannot iterate over
		1298	# all maps in C++...
		1299	sub change_all_map_light {
		1300	my ($change) = @_;
		1301
		1302	$_->change_map_light ($change)
		1303	for grep $_->outdoor, values %cf::MAP;
		1304	}
		1305
		1306	sub unlink_save {
		1307	my ($self) = @_;
		1308
		1309	utf8::encode (my $save = $self->save_path);
		1310	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1311	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1312
		1313	#d#TODO remove .map and also nuke
		1314	$save =~ s/\.map// or return;#d#
		1315	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1316	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1317	}
		1318
		1319	sub load_header_from($) {
		1320	my ($self, $path) = @_;
		1321
		1322	utf8::encode $path;
		1323	#aio_open $path, O_RDONLY, 0
		1324	# or return;
		1325
		1326	$self->_load_header ($path)
		1327	or return;
		1328
		1329	$self->{load_path} = $path;
		1330
		1331	1
		1332	}
		1333
		1334	sub load_header_orig {
		1335	my ($self) = @_;
		1336
		1337	$self->load_header_from ($self->load_path)
		1338	}
		1339
		1340	sub load_header_temp {
		1341	my ($self) = @_;
		1342
		1343	$self->load_header_from ($self->save_path)
		1344	}
		1345
		1346	sub prepare_temp {
		1347	my ($self) = @_;
		1348
		1349	$self->last_access ((delete $self->{last_access})
		1350	|| $cf::RUNTIME); #d#
		1351	# safety
		1352	$self->{instantiate_time} = $cf::RUNTIME
		1353	if $self->{instantiate_time} > $cf::RUNTIME;
		1354	}
		1355
		1356	sub prepare_orig {
		1357	my ($self) = @_;
		1358
		1359	$self->{load_original} = 1;
		1360	$self->{instantiate_time} = $cf::RUNTIME;
		1361	$self->last_access ($cf::RUNTIME);
		1362	$self->instantiate;
		1363	}
		1364
		1365	sub load_header {
		1366	my ($self) = @_;
		1367
		1368	if ($self->load_header_temp) {
		1369	$self->prepare_temp;
		1370	} else {
		1371	$self->load_header_orig
		1372	or return;
		1373	$self->prepare_orig;
		1374	}
		1375
		1376	1
		1377	}
		1378
		1379	sub find;
		1380	sub find {
		1381	my ($path, $origin) = @_;
		1382
		1383	$path = normalise $path, $origin && $origin->path;
		1384
		1385	cf::lock_wait "map_find:$path";
		1386
		1387	$cf::MAP{$path} || do {
		1388	my $guard = cf::lock_acquire "map_find:$path";
		1389	my $map = new_from_path cf::map $path
		1390	or return;
		1391
		1392	$map->{last_save} = $cf::RUNTIME;
		1393
		1394	$map->load_header
		1395	or return;
		1396
		1397	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1398	# doing this can freeze the server in a sync job, obviously
		1399	#$cf::WAIT_FOR_TICK->wait;
		1400	$map->reset;
		1401	undef $guard;
		1402	return find $path;
		1403	}
		1404
		1405	$cf::MAP{$path} = $map
		1406	}
		1407	}
		1408
		1409	sub pre_load { }
		1410	sub post_load { }
		1411
		1412	sub load {
		1413	my ($self) = @_;
		1414
		1415	local $self->{deny_reset} = 1; # loading can take a long time
		1416
		1417	my $path = $self->{path};
		1418	my $guard = cf::lock_acquire "map_load:$path";
		1419
		1420	return if $self->in_memory != cf::MAP_SWAPPED;
		1421
		1422	$self->in_memory (cf::MAP_LOADING);
		1423
		1424	$self->alloc;
		1425
		1426	$self->pre_load;
		1427
		1428	$self->_load_objects ($self->{load_path}, 1)
		1429	or return;
		1430
		1431	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1432	if delete $self->{load_original};
		1433
		1434	if (my $uniq = $self->uniq_path) {
		1435	utf8::encode $uniq;
		1436	if (aio_open $uniq, O_RDONLY, 0) {
		1437	$self->clear_unique_items;
		1438	$self->_load_objects ($uniq, 0);
		1439	}
		1440	}
		1441
		1442	Coro::cede;
		1443
		1444	# now do the right thing for maps
		1445	$self->link_multipart_objects;
		1446
		1447	unless ($self->{deny_activate}) {
		1448	$self->decay_objects;
		1449	$self->fix_auto_apply;
		1450	$self->update_buttons;
		1451	Coro::cede;
		1452	$self->set_darkness_map;
		1453	$self->difficulty ($self->estimate_difficulty)
		1454	unless $self->difficulty;
		1455	Coro::cede;
		1456	$self->activate;
		1457	}
		1458
		1459	$self->post_load;
		1460
		1461	$self->in_memory (cf::MAP_IN_MEMORY);
		1462	}
		1463
		1464	sub customise_for {
		1465	my ($self, $ob) = @_;
		1466
		1467	return find "~" . $ob->name . "/" . $self->{path}
		1468	if $self->per_player;
		1469
		1470	$self
		1471	}
		1472
		1473	# find and load all maps in the 3x3 area around a map
		1474	sub load_diag {
685	my ($msg) = @_;	1475	my ($map) = @_;
686		1476
687	$msg->("reloading...");	1477	my @diag; # diagonal neighbours
688		1478
689	eval {	1479	for (0 .. 3) {
690	# 1. cancel all watchers	1480	my $neigh = $map->tile_path ($_)
691	$_->cancel for Event::all_watchers;	1481	or next;
		1482	$neigh = find $neigh, $map
		1483	or next;
		1484	$neigh->load;
692		1485
693	# 2. unload all extensions	1486	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
694	for (@exts) {	1487	[$neigh->tile_path (($_ + 1) % 4), $neigh];
695	$msg->("unloading <$_>");	1488	}
696	unload_extension $_;
697	}
698		1489
699	# 3. unload all modules loaded from $LIBDIR	1490	for (@diag) {
700	while (my ($k, $v) = each %INC) {	1491	my $neigh = find @$_
701	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1492	or next;
		1493	$neigh->load;
		1494	}
		1495	}
702		1496
703	$msg->("removing <$k>");	1497	sub find_sync {
704	delete $INC{$k};	1498	my ($path, $origin) = @_;
705		1499
706	$k =~ s/\.pm$//;	1500	cf::sync_job { find $path, $origin }
707	$k =~ s/\//::/g;	1501	}
708		1502
709	if (my $cb = $k->can ("unload_module")) {	1503	sub do_load_sync {
710	$cb->();	1504	my ($map) = @_;
		1505
		1506	cf::sync_job { $map->load };
		1507	}
		1508
		1509	our %MAP_PREFETCH;
		1510	our $MAP_PREFETCHER = undef;
		1511
		1512	sub find_async {
		1513	my ($path, $origin) = @_;
		1514
		1515	$path = normalise $path, $origin && $origin->{path};
		1516
		1517	if (my $map = $cf::MAP{$path}) {
		1518	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1519	}
		1520
		1521	undef $MAP_PREFETCH{$path};
		1522	$MAP_PREFETCHER ||= cf::async {
		1523	while (%MAP_PREFETCH) {
		1524	for my $path (keys %MAP_PREFETCH) {
		1525	my $map = find $path
		1526	or next;
		1527	$map->load;
		1528
		1529	delete $MAP_PREFETCH{$path};
711	}	1530	}
712
713	Symbol::delete_package $k;
714	}
715
716	# 4. get rid of safe::, as good as possible
717	Symbol::delete_package "safe::$_"
718	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
719
720	# 5. remove register_script_function callbacks
721	# TODO
722		1531	}
723	# 6. unload cf.pm "a bit"	1532	undef $MAP_PREFETCHER;
724	delete $INC{"cf.pm"};
725
726	# don't, removes xs symbols, too,
727	# and global variables created in xs
728	#Symbol::delete_package __PACKAGE__;
729
730	# 7. reload cf.pm
731	$msg->("reloading cf.pm");
732	require cf;
733
734	$msg->("load extensions");
735	cf::load_extensions;
736	};	1533	};
737	$msg->($@) if $@;	1534	$MAP_PREFETCHER->prio (6);
738		1535
739	$msg->("reloaded");	1536	()
740	};	1537	}
741		1538
742	sub perl_reload() {	1539	sub save {
743	_perl_reload {	1540	my ($self) = @_;
744	warn $_[0];	1541
745	print "$_[0]\n";	1542	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1543
		1544	$self->{last_save} = $cf::RUNTIME;
		1545
		1546	return unless $self->dirty;
		1547
		1548	my $save = $self->save_path; utf8::encode $save;
		1549	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1550
		1551	$self->{load_path} = $save;
		1552
		1553	return if $self->{deny_save};
		1554
		1555	local $self->{last_access} = $self->last_access;#d#
		1556
		1557	cf::async {
		1558	$_->contr->save for $self->players;
746	};	1559	};
747	}
748		1560
749	register_command "perl-reload", 0, sub {	1561	if ($uniq) {
750	my ($who, $arg) = @_;	1562	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
751		1563	$self->_save_objects ($uniq, cf::IO_UNIQUES);
752	if ($who->flag (FLAG_WIZ)) {
753	_perl_reload {
754	warn $_[0];
755	$who->message ($_[0]);
756	};
757	}
758	};
759
760	#############################################################################
761	# extcmd framework, basically convert ext <msg>
762	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
763
764	attach_to_players
765	on_extcmd => sub {
766	my ($pl, $buf) = @_;
767
768	my $msg = eval { from_json $buf };
769
770	if (ref $msg) {
771	if (my $cb = $extcmd{$msg->{msgtype}}) {
772	if (my %reply = $cb->[0]->($pl, $msg)) {
773	$pl->ext_reply ($msg->{msgid}, %reply);
774	}
775	}
776	} else {	1564	} else {
777	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1565	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
778	}
779
780	cf::override;
781	},	1566	}
782	;	1567	}
783		1568
784	#############################################################################	1569	sub swap_out {
785	# load/save/clean perl data associated with a map
786
787	*cf::mapsupport::on_clean = sub {
788	my ($map) = @_;	1570	my ($self) = @_;
789		1571
790	my $path = $map->tmpname;	1572	# save first because save cedes
791	defined $path or return;	1573	$self->save;
792		1574
793	unlink "$path.pst";	1575	my $lock = cf::lock_acquire "map_data:" . $self->path;
794	};
795		1576
796	attach_to_maps prio => -10000, package => cf::mapsupport::;	1577	return if $self->players;
		1578	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1579	return if $self->{deny_save};
797		1580
798	#############################################################################	1581	$self->clear;
799	# load/save perl data associated with player->ob objects	1582	$self->in_memory (cf::MAP_SWAPPED);
800
801	sub all_objects(@) {
802	@_, map all_objects ($_->inv), @_
803	}	1583	}
804		1584
805	# TODO: compatibility cruft, remove when no longer needed	1585	sub reset_at {
806	attach_to_players	1586	my ($self) = @_;
807	on_load => sub {
808	my ($pl, $path) = @_;
809		1587
810	for my $o (all_objects $pl->ob) {	1588	# TODO: safety, remove and allow resettable per-player maps
811	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1589	return 1e99 if $self->isa ("ext::map_per_player");#d#
812	$o->set_ob_key_value ("_perl_data");	1590	return 1e99 if $self->{deny_reset};
813		1591
814	%$o = %{ Storable::thaw pack "H*", $value };	1592	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
815	}	1593	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
816	}	1594
		1595	$time + $to
		1596	}
		1597
		1598	sub should_reset {
		1599	my ($self) = @_;
		1600
		1601	$self->reset_at <= $cf::RUNTIME
		1602	}
		1603
		1604	sub reset {
		1605	my ($self) = @_;
		1606
		1607	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1608
		1609	return if $self->players;
		1610	return if $self->isa ("ext::map_per_player");#d#
		1611
		1612	warn "resetting map ", $self->path;#d#
		1613
		1614	delete $cf::MAP{$self->path};
		1615
		1616	$self->in_memory (cf::MAP_SWAPPED);
		1617	$self->clear;
		1618
		1619	$_->clear_links_to ($self) for values %cf::MAP;
		1620
		1621	$self->unlink_save;
		1622	$self->destroy;
		1623	}
		1624
		1625	my $nuke_counter = "aaaa";
		1626
		1627	sub nuke {
		1628	my ($self) = @_;
		1629
		1630	delete $cf::MAP{$self->path};
		1631
		1632	$self->unlink_save;
		1633
		1634	bless $self, "cf::map";
		1635	delete $self->{deny_reset};
		1636	$self->{deny_save} = 1;
		1637	$self->reset_timeout (1);
		1638	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1639
		1640	$cf::MAP{$self->path} = $self;
		1641
		1642	$self->reset; # polite request, might not happen
		1643	}
		1644
		1645	=item cf::map::unique_maps
		1646
		1647	Returns an arrayref of paths of all shared maps that have
		1648	instantiated unique items. May block.
		1649
		1650	=cut
		1651
		1652	sub unique_maps() {
		1653	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1654	or return;
		1655
		1656	my @paths;
		1657
		1658	for (@$files) {
		1659	utf8::decode $_;
		1660	next if /\.pst$/;
		1661	next unless /^$PATH_SEP/o;
		1662
		1663	push @paths, cf::map::normalise $_;
817	},	1664	}
818	;
819		1665
820	#############################################################################	1666	\@paths
821	# core extensions - in perl
822
823	=item cf::player::exists $login
824
825	Returns true when the given account exists.
826
827	=cut
828
829	sub cf::player::exists($) {
830	cf::player::find $_[0]
831	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
832	}	1667	}
833		1668
		1669	package cf;
		1670
		1671	=back
		1672
		1673	=head3 cf::object
		1674
		1675	=cut
		1676
		1677	package cf::object;
		1678
		1679	=over 4
		1680
		1681	=item $ob->inv_recursive
		1682
		1683	Returns the inventory of the object _and_ their inventories, recursively.
		1684
		1685	=cut
		1686
		1687	sub inv_recursive_;
		1688	sub inv_recursive_ {
		1689	map { $_, inv_recursive_ $_->inv } @_
		1690	}
		1691
		1692	sub inv_recursive {
		1693	inv_recursive_ inv $_[0]
		1694	}
		1695
		1696	package cf;
		1697
		1698	=back
		1699
		1700	=head3 cf::object::player
		1701
		1702	=over 4
		1703
834	=item $player->reply ($npc, $msg[, $flags])	1704	=item $player_object->reply ($npc, $msg[, $flags])
835		1705
836	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1706	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
837	can be C<undef>. Does the right thing when the player is currently in a	1707	can be C<undef>. Does the right thing when the player is currently in a
838	dialogue with the given NPC character.	1708	dialogue with the given NPC character.
839		1709
840	=cut	1710	=cut
841		1711
842	# rough implementation of a future "reply" method that works	1712	# rough implementation of a future "reply" method that works
843	# with dialog boxes.	1713	# with dialog boxes.
		1714	#TODO: the first argument must go, split into a $npc->reply_to ( method
844	sub cf::object::player::reply($$$;$) {	1715	sub cf::object::player::reply($$$;$) {
845	my ($self, $npc, $msg, $flags) = @_;	1716	my ($self, $npc, $msg, $flags) = @_;
846		1717
847	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1718	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
848		1719
…		…
852	$msg = $npc->name . " says: $msg" if $npc;	1723	$msg = $npc->name . " says: $msg" if $npc;
853	$self->message ($msg, $flags);	1724	$self->message ($msg, $flags);
854	}	1725	}
855	}	1726	}
856		1727
857	=item $player->ext_reply ($msgid, $msgtype, %msg)	1728	=item $player_object->may ("access")
858		1729
859	Sends an ext reply to the player.	1730	Returns wether the given player is authorized to access resource "access"
		1731	(e.g. "command_wizcast").
860		1732
861	=cut	1733	=cut
862		1734
863	sub cf::player::ext_reply($$$%) {	1735	sub cf::object::player::may {
		1736	my ($self, $access) = @_;
		1737
		1738	$self->flag (cf::FLAG_WIZ) ||
		1739	(ref $cf::CFG{"may_$access"}
		1740	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1741	: $cf::CFG{"may_$access"})
		1742	}
		1743
		1744	=item $player_object->enter_link
		1745
		1746	Freezes the player and moves him/her to a special map (C<{link}>).
		1747
		1748	The player should be reasonably safe there for short amounts of time. You
		1749	I<MUST> call C<leave_link> as soon as possible, though.
		1750
		1751	Will never block.
		1752
		1753	=item $player_object->leave_link ($map, $x, $y)
		1754
		1755	Moves the player out of the special C<{link}> map onto the specified
		1756	map. If the map is not valid (or omitted), the player will be moved back
		1757	to the location he/she was before the call to C<enter_link>, or, if that
		1758	fails, to the emergency map position.
		1759
		1760	Might block.
		1761
		1762	=cut
		1763
		1764	sub link_map {
		1765	unless ($LINK_MAP) {
		1766	$LINK_MAP = cf::map::find "{link}"
		1767	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1768	$LINK_MAP->load;
		1769	}
		1770
		1771	$LINK_MAP
		1772	}
		1773
		1774	sub cf::object::player::enter_link {
		1775	my ($self) = @_;
		1776
		1777	$self->deactivate_recursive;
		1778
		1779	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1780
		1781	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1782	if $self->map;
		1783
		1784	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1785	}
		1786
		1787	sub cf::object::player::leave_link {
		1788	my ($self, $map, $x, $y) = @_;
		1789
		1790	my $link_pos = delete $self->{_link_pos};
		1791
		1792	unless ($map) {
		1793	# restore original map position
		1794	($map, $x, $y) = @{ $link_pos || [] };
		1795	$map = cf::map::find $map;
		1796
		1797	unless ($map) {
		1798	($map, $x, $y) = @$EMERGENCY_POSITION;
		1799	$map = cf::map::find $map
		1800	or die "FATAL: cannot load emergency map\n";
		1801	}
		1802	}
		1803
		1804	($x, $y) = (-1, -1)
		1805	unless (defined $x) && (defined $y);
		1806
		1807	# use -1 or undef as default coordinates, not 0, 0
		1808	($x, $y) = ($map->enter_x, $map->enter_y)
		1809	if $x <=0 && $y <= 0;
		1810
		1811	$map->load;
		1812	$map->load_diag;
		1813
		1814	return unless $self->contr->active;
		1815	$self->activate_recursive;
		1816	$self->enter_map ($map, $x, $y);
		1817	}
		1818
		1819	cf::player->attach (
		1820	on_logout => sub {
		1821	my ($pl) = @_;
		1822
		1823	# abort map switching before logout
		1824	if ($pl->ob->{_link_pos}) {
		1825	cf::sync_job {
		1826	$pl->ob->leave_link
		1827	};
		1828	}
		1829	},
		1830	on_login => sub {
		1831	my ($pl) = @_;
		1832
		1833	# try to abort aborted map switching on player login :)
		1834	# should happen only on crashes
		1835	if ($pl->ob->{_link_pos}) {
		1836	$pl->ob->enter_link;
		1837	(async {
		1838	# we need this sleep as the login has a concurrent enter_exit running
		1839	# and this sleep increases chances of the player not ending up in scorn
		1840	$pl->ob->reply (undef,
		1841	"There was an internal problem at your last logout, "
		1842	. "the server will try to bring you to your intended destination in a second.",
		1843	cf::NDI_RED);
		1844	Coro::Timer::sleep 1;
		1845	$pl->ob->leave_link;
		1846	})->prio (2);
		1847	}
		1848	},
		1849	);
		1850
		1851	=item $player_object->goto ($path, $x, $y)
		1852
		1853	=cut
		1854
		1855	sub cf::object::player::goto {
		1856	my ($self, $path, $x, $y) = @_;
		1857
		1858	$self->enter_link;
		1859
		1860	(async {
		1861	my $map = eval {
		1862	my $map = cf::map::find $path;
		1863	$map = $map->customise_for ($self) if $map;
		1864	$map
		1865	} or
		1866	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1867
		1868	$self->leave_link ($map, $x, $y);
		1869	})->prio (1);
		1870	}
		1871
		1872	=item $player_object->enter_exit ($exit_object)
		1873
		1874	=cut
		1875
		1876	sub parse_random_map_params {
		1877	my ($spec) = @_;
		1878
		1879	my $rmp = { # defaults
		1880	xsize => (cf::rndm 15, 40),
		1881	ysize => (cf::rndm 15, 40),
		1882	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1883	#layout => string,
		1884	};
		1885
		1886	for (split /\n/, $spec) {
		1887	my ($k, $v) = split /\s+/, $_, 2;
		1888
		1889	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1890	}
		1891
		1892	$rmp
		1893	}
		1894
		1895	sub prepare_random_map {
		1896	my ($exit) = @_;
		1897
		1898	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1899
		1900	# all this does is basically replace the /! path by
		1901	# a new random map path (?random/...) with a seed
		1902	# that depends on the exit object
		1903
		1904	my $rmp = parse_random_map_params $exit->msg;
		1905
		1906	if ($exit->map) {
		1907	$rmp->{region} = $exit->region->name;
		1908	$rmp->{origin_map} = $exit->map->path;
		1909	$rmp->{origin_x} = $exit->x;
		1910	$rmp->{origin_y} = $exit->y;
		1911	}
		1912
		1913	$rmp->{random_seed} ||= $exit->random_seed;
		1914
		1915	my $data = cf::to_json $rmp;
		1916	my $md5 = Digest::MD5::md5_hex $data;
		1917	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1918
		1919	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1920	aio_write $fh, 0, (length $data), $data, 0;
		1921	undef $fh;
		1922	aio_rename "$meta~", $meta;
		1923
		1924	$exit->slaying ("?random/$md5");
		1925	$exit->msg (undef);
		1926	}
		1927	}
		1928
		1929	sub cf::object::player::enter_exit {
864	my ($self, $id, %msg) = @_;	1930	my ($self, $exit) = @_;
865		1931
866	$msg{msgid} = $id;	1932	return unless $self->type == cf::PLAYER;
867		1933
868	$self->send ("ext " . to_json \%msg);	1934	if ($exit->slaying eq "/!") {
869	}	1935	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1936	cf::sync_job { prepare_random_map $exit };
		1937	}
870		1938
871	#############################################################################	1939	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
872	# map scripting support	1940	my $hp = $exit->stats->hp;
		1941	my $sp = $exit->stats->sp;
		1942
		1943	$self->enter_link;
		1944
		1945	(async {
		1946	$self->deactivate_recursive; # just to be sure
		1947	unless (eval {
		1948	$self->goto ($slaying, $hp, $sp);
		1949
		1950	1;
		1951	}) {
		1952	$self->message ("Something went wrong deep within the crossfire server. "
		1953	. "I'll try to bring you back to the map you were before. "
		1954	. "Please report this to the dungeon master!",
		1955	cf::NDI_UNIQUE | cf::NDI_RED);
		1956
		1957	warn "ERROR in enter_exit: $@";
		1958	$self->leave_link;
		1959	}
		1960	})->prio (1);
		1961	}
		1962
		1963	=head3 cf::client
		1964
		1965	=over 4
		1966
		1967	=item $client->send_drawinfo ($text, $flags)
		1968
		1969	Sends a drawinfo packet to the client. Circumvents output buffering so
		1970	should not be used under normal circumstances.
		1971
		1972	=cut
		1973
		1974	sub cf::client::send_drawinfo {
		1975	my ($self, $text, $flags) = @_;
		1976
		1977	utf8::encode $text;
		1978	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1979	}
		1980
		1981
		1982	=item $success = $client->query ($flags, "text", \&cb)
		1983
		1984	Queues a query to the client, calling the given callback with
		1985	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1986	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1987
		1988	Queries can fail, so check the return code. Or don't, as queries will become
		1989	reliable at some point in the future.
		1990
		1991	=cut
		1992
		1993	sub cf::client::query {
		1994	my ($self, $flags, $text, $cb) = @_;
		1995
		1996	return unless $self->state == ST_PLAYING
		1997	|| $self->state == ST_SETUP
		1998	|| $self->state == ST_CUSTOM;
		1999
		2000	$self->state (ST_CUSTOM);
		2001
		2002	utf8::encode $text;
		2003	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2004
		2005	$self->send_packet ($self->{query_queue}[0][0])
		2006	if @{ $self->{query_queue} } == 1;
		2007	}
		2008
		2009	cf::client->attach (
		2010	on_reply => sub {
		2011	my ($ns, $msg) = @_;
		2012
		2013	# this weird shuffling is so that direct followup queries
		2014	# get handled first
		2015	my $queue = delete $ns->{query_queue}
		2016	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2017
		2018	(shift @$queue)->[1]->($msg);
		2019	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2020
		2021	push @{ $ns->{query_queue} }, @$queue;
		2022
		2023	if (@{ $ns->{query_queue} } == @$queue) {
		2024	if (@$queue) {
		2025	$ns->send_packet ($ns->{query_queue}[0][0]);
		2026	} else {
		2027	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2028	}
		2029	}
		2030	},
		2031	);
		2032
		2033	=item $client->async (\&cb)
		2034
		2035	Create a new coroutine, running the specified callback. The coroutine will
		2036	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2037	or loss of connection).
		2038
		2039	=cut
		2040
		2041	sub cf::client::async {
		2042	my ($self, $cb) = @_;
		2043
		2044	my $coro = &Coro::async ($cb);
		2045
		2046	$coro->on_destroy (sub {
		2047	delete $self->{_coro}{$coro+0};
		2048	});
		2049
		2050	$self->{_coro}{$coro+0} = $coro;
		2051
		2052	$coro
		2053	}
		2054
		2055	cf::client->attach (
		2056	on_destroy => sub {
		2057	my ($ns) = @_;
		2058
		2059	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2060	},
		2061	);
		2062
		2063	=back
		2064
		2065
		2066	=head2 SAFE SCRIPTING
		2067
		2068	Functions that provide a safe environment to compile and execute
		2069	snippets of perl code without them endangering the safety of the server
		2070	itself. Looping constructs, I/O operators and other built-in functionality
		2071	is not available in the safe scripting environment, and the number of
		2072	functions and methods that can be called is greatly reduced.
		2073
		2074	=cut
873		2075
874	our $safe = new Safe "safe";	2076	our $safe = new Safe "safe";
875	our $safe_hole = new Safe::Hole;	2077	our $safe_hole = new Safe::Hole;
876		2078
877	$SIG{FPE} = 'IGNORE';	2079	$SIG{FPE} = 'IGNORE';
878		2080
879	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2081	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
880		2082
881	# here we export the classes and methods available to script code	2083	# here we export the classes and methods available to script code
882		2084
		2085	=pod
		2086
		2087	The following fucntions and emthods are available within a safe environment:
		2088
		2089	cf::object contr pay_amount pay_player map
		2090	cf::object::player player
		2091	cf::player peaceful
		2092	cf::map trigger
		2093
		2094	=cut
		2095
883	for (	2096	for (
884	["cf::object" => qw(contr pay_amount pay_player)],	2097	["cf::object" => qw(contr pay_amount pay_player map)],
885	["cf::object::player" => qw(player)],	2098	["cf::object::player" => qw(player)],
886	["cf::player" => qw(peaceful)],	2099	["cf::player" => qw(peaceful)],
		2100	["cf::map" => qw(trigger)],
887	) {	2101	) {
888	no strict 'refs';	2102	no strict 'refs';
889	my ($pkg, @funs) = @$_;	2103	my ($pkg, @funs) = @$_;
890	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2104	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
891	for @funs;	2105	for @funs;
892	}	2106	}
		2107
		2108	=over 4
		2109
		2110	=item @retval = safe_eval $code, [var => value, ...]
		2111
		2112	Compiled and executes the given perl code snippet. additional var/value
		2113	pairs result in temporary local (my) scalar variables of the given name
		2114	that are available in the code snippet. Example:
		2115
		2116	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2117
		2118	=cut
893		2119
894	sub safe_eval($;@) {	2120	sub safe_eval($;@) {
895	my ($code, %vars) = @_;	2121	my ($code, %vars) = @_;
896		2122
897	my $qcode = $code;	2123	my $qcode = $code;
…		…
920	}	2146	}
921		2147
922	wantarray ? @res : $res[0]	2148	wantarray ? @res : $res[0]
923	}	2149	}
924		2150
		2151	=item cf::register_script_function $function => $cb
		2152
		2153	Register a function that can be called from within map/npc scripts. The
		2154	function should be reasonably secure and should be put into a package name
		2155	like the extension.
		2156
		2157	Example: register a function that gets called whenever a map script calls
		2158	C<rent::overview>, as used by the C<rent> extension.
		2159
		2160	cf::register_script_function "rent::overview" => sub {
		2161	...
		2162	};
		2163
		2164	=cut
		2165
925	sub register_script_function {	2166	sub register_script_function {
926	my ($fun, $cb) = @_;	2167	my ($fun, $cb) = @_;
927		2168
928	no strict 'refs';	2169	no strict 'refs';
929	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2170	*{"safe::$fun"} = $safe_hole->wrap ($cb);
930	}	2171	}
931		2172
		2173	=back
		2174
		2175	=cut
		2176
932	#############################################################################	2177	#############################################################################
933	# the server's main()	2178
		2179	=head2 EXTENSION DATABASE SUPPORT
		2180
		2181	Crossfire maintains a very simple database for extension use. It can
		2182	currently store anything that can be serialised using Storable, which
		2183	excludes objects.
		2184
		2185	The parameter C<$family> should best start with the name of the extension
		2186	using it, it should be unique.
		2187
		2188	=over 4
		2189
		2190	=item $value = cf::db_get $family => $key
		2191
		2192	Returns a single value from the database.
		2193
		2194	=item cf::db_put $family => $key => $value
		2195
		2196	Stores the given C<$value> in the family.
		2197
		2198	=cut
		2199
		2200	our $DB;
		2201
		2202	sub db_load() {
		2203	unless ($DB) {
		2204	$DB = BDB::db_create $DB_ENV;
		2205
		2206	cf::sync_job {
		2207	eval {
		2208	$DB->set_flags (BDB::CHKSUM);
		2209
		2210	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2211	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2212	cf::cleanup "db_open(db): $!" if $!;
		2213	};
		2214	cf::cleanup "db_open(db): $@" if $@;
		2215	};
		2216
		2217	my $path = cf::localdir . "/database.pst";
		2218	if (stat $path) {
		2219	cf::sync_job {
		2220	my $pst = Storable::retrieve $path;
		2221
		2222	cf::db_put (board => data => $pst->{board});
		2223	cf::db_put (guildrules => data => $pst->{guildrules});
		2224	cf::db_put (rent => balance => $pst->{rent}{balance});
		2225	BDB::db_env_txn_checkpoint $DB_ENV;
		2226
		2227	unlink $path;
		2228	};
		2229	}
		2230	}
		2231	}
		2232
		2233	sub db_get($$) {
		2234	my $key = "$_[0]/$_[1]";
		2235
		2236	cf::sync_job {
		2237	BDB::db_get $DB, undef, $key, my $data;
		2238
		2239	$! ? ()
		2240	: Compress::LZF::sthaw $data
		2241	}
		2242	}
		2243
		2244	sub db_put($$$) {
		2245	BDB::dbreq_pri 4;
		2246	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2247	}
		2248
		2249	#############################################################################
		2250	# the server's init and main functions
		2251
		2252	sub load_resources {
		2253	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2254	or die "unable to load regions file\n";#d#
		2255	}
		2256
		2257	sub cfg_load {
		2258	open my $fh, "<:utf8", cf::confdir . "/config"
		2259	or return;
		2260
		2261	local $/;
		2262	*CFG = YAML::Syck::Load <$fh>;
		2263
		2264	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2265
		2266	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2267	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2268
		2269	if (exists $CFG{mlockall}) {
		2270	eval {
		2271	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2272	and die "WARNING: m(un)lockall failed: $!\n";
		2273	};
		2274	warn $@ if $@;
		2275	}
		2276	}
		2277
		2278	sub init {
		2279	load_resources;
		2280	}
934		2281
935	sub main {	2282	sub main {
		2283	# we must not ever block the main coroutine
		2284	local $Coro::idle = sub {
		2285	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2286	(async {
		2287	Event::one_event;
		2288	})->prio (Coro::PRIO_MAX);
		2289	};
		2290
		2291	cfg_load;
		2292	db_load;
936	load_extensions;	2293	load_extensions;
		2294
		2295	$TICK_WATCHER->start;
937	Event::loop;	2296	Event::loop;
938	}	2297	}
939		2298
940	#############################################################################	2299	#############################################################################
941	# initialisation	2300	# initialisation and cleanup
942		2301
943	register "<global>", __PACKAGE__;	2302	# install some emergency cleanup handlers
		2303	BEGIN {
		2304	for my $signal (qw(INT HUP TERM)) {
		2305	Event->signal (
		2306	reentrant => 0,
		2307	data => WF_AUTOCANCEL,
		2308	signal => $signal,
		2309	prio => 0,
		2310	cb => sub {
		2311	cf::cleanup "SIG$signal";
		2312	},
		2313	);
		2314	}
		2315	}
		2316
		2317	sub emergency_save() {
		2318	my $freeze_guard = cf::freeze_mainloop;
		2319
		2320	warn "enter emergency perl save\n";
		2321
		2322	cf::sync_job {
		2323	# use a peculiar iteration method to avoid tripping on perl
		2324	# refcount bugs in for. also avoids problems with players
		2325	# and maps saved/destroyed asynchronously.
		2326	warn "begin emergency player save\n";
		2327	for my $login (keys %cf::PLAYER) {
		2328	my $pl = $cf::PLAYER{$login} or next;
		2329	$pl->valid or next;
		2330	$pl->save;
		2331	}
		2332	warn "end emergency player save\n";
		2333
		2334	warn "begin emergency map save\n";
		2335	for my $path (keys %cf::MAP) {
		2336	my $map = $cf::MAP{$path} or next;
		2337	$map->valid or next;
		2338	$map->save;
		2339	}
		2340	warn "end emergency map save\n";
		2341
		2342	warn "begin emergency database checkpoint\n";
		2343	BDB::db_env_txn_checkpoint $DB_ENV;
		2344	warn "end emergency database checkpoint\n";
		2345	};
		2346
		2347	warn "leave emergency perl save\n";
		2348	}
		2349
		2350	sub reload() {
		2351	# can/must only be called in main
		2352	if ($Coro::current != $Coro::main) {
		2353	warn "can only reload from main coroutine";
		2354	return;
		2355	}
		2356
		2357	warn "reloading...";
		2358
		2359	warn "cancelling server ticker";
		2360	$TICK_WATCHER->cancel;
		2361
		2362	cf::emergency_save;
		2363
		2364	eval {
		2365	# if anything goes wrong in here, we should simply crash as we already saved
		2366
		2367	warn "cancelling all WF_AUTOCANCEL watchers";
		2368	for (Event::all_watchers) {
		2369	$_->cancel if $_->data & WF_AUTOCANCEL;
		2370	}
		2371
		2372	warn "syncing database to disk";
		2373	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		2374
		2375	warn "flushing outstanding aio requests";
		2376	for (;;) {
		2377	BDB::flush;
		2378	IO::AIO::flush;
		2379	Coro::cede;
		2380	last unless IO::AIO::nreqs || BDB::nreqs;
		2381	warn "iterate...";
		2382	}
		2383
		2384	warn "cancelling all extension coros";
		2385	$_->cancel for values %EXT_CORO;
		2386	%EXT_CORO = ();
		2387
		2388	warn "removing commands";
		2389	%COMMAND = ();
		2390
		2391	warn "removing ext commands";
		2392	%EXTCMD = ();
		2393
		2394	warn "unloading/nuking all extensions";
		2395	for my $pkg (@EXTS) {
		2396	warn "... unloading $pkg";
		2397
		2398	if (my $cb = $pkg->can ("unload")) {
		2399	eval {
		2400	$cb->($pkg);
		2401	1
		2402	} or warn "$pkg unloaded, but with errors: $@";
		2403	}
		2404
		2405	warn "... nuking $pkg";
		2406	Symbol::delete_package $pkg;
		2407	}
		2408
		2409	warn "unloading all perl modules loaded from $LIBDIR";
		2410	while (my ($k, $v) = each %INC) {
		2411	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2412
		2413	warn "... unloading $k";
		2414	delete $INC{$k};
		2415
		2416	$k =~ s/\.pm$//;
		2417	$k =~ s/\//::/g;
		2418
		2419	if (my $cb = $k->can ("unload_module")) {
		2420	$cb->();
		2421	}
		2422
		2423	Symbol::delete_package $k;
		2424	}
		2425
		2426	warn "getting rid of safe::, as good as possible";
		2427	Symbol::delete_package "safe::$_"
		2428	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2429
		2430	warn "unloading cf.pm \"a bit\"";
		2431	delete $INC{"cf.pm"};
		2432
		2433	# don't, removes xs symbols, too,
		2434	# and global variables created in xs
		2435	#Symbol::delete_package __PACKAGE__;
		2436
		2437	warn "unload completed, starting to reload now";
		2438
		2439	warn "reloading cf.pm";
		2440	require cf;
		2441	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2442
		2443	warn "loading config and database again";
		2444	cf::cfg_load;
		2445	cf::db_load;
		2446
		2447	warn "loading extensions";
		2448	cf::load_extensions;
		2449
		2450	warn "reattaching attachments to objects/players";
		2451	_global_reattach;
		2452	warn "reattaching attachments to maps";
		2453	reattach $_ for values %MAP;
		2454
		2455	warn "loading reloadable resources";
		2456	load_resources;
		2457
		2458	warn "restarting server ticker";
		2459
		2460	$TICK_WATCHER->start;
		2461	};
		2462
		2463	if ($@) {
		2464	warn $@;
		2465	warn "error while reloading, exiting.";
		2466	exit 1;
		2467	}
		2468
		2469	warn "reloaded";
		2470	};
		2471
		2472	our $RELOAD_WATCHER; # used only during reload
		2473
		2474	register_command "reload" => sub {
		2475	my ($who, $arg) = @_;
		2476
		2477	if ($who->flag (FLAG_WIZ)) {
		2478	$who->message ("reloading server.");
		2479
		2480	# doing reload synchronously and two reloads happen back-to-back,
		2481	# coro crashes during coro_state_free->destroy here.
		2482
		2483	$RELOAD_WATCHER ||= Event->timer (
		2484	reentrant => 0,
		2485	after => 0,
		2486	data => WF_AUTOCANCEL,
		2487	cb => sub {
		2488	reload;
		2489	undef $RELOAD_WATCHER;
		2490	},
		2491	);
		2492	}
		2493	};
944		2494
945	unshift @INC, $LIBDIR;	2495	unshift @INC, $LIBDIR;
946		2496
		2497	my $bug_warning = 0;
		2498
947	$TICK_WATCHER = Event->timer (	2499	$TICK_WATCHER = Event->timer (
		2500	reentrant => 0,
		2501	parked => 1,
948	prio => 1,	2502	prio => 0,
949	at => $NEXT_TICK || 1,	2503	at => $NEXT_TICK || $TICK,
		2504	data => WF_AUTOCANCEL,
950	cb => sub {	2505	cb => sub {
		2506	if ($Coro::current != $Coro::main) {
		2507	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2508	unless ++$bug_warning > 10;
		2509	return;
		2510	}
		2511
		2512	$NOW = Event::time;
		2513
951	cf::server_tick; # one server iteration	2514	cf::server_tick; # one server iteration
952		2515	$RUNTIME += $TICK;
953	my $NOW = Event::time;
954	$NEXT_TICK += $TICK;	2516	$NEXT_TICK += $TICK;
955		2517
		2518	$WAIT_FOR_TICK->broadcast;
		2519	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2520
		2521	Event::sweep;
		2522	Coro::cede_notself;
		2523
		2524	# my $AFTER = Event::time;
		2525	# warn $AFTER - $NOW;#d#
		2526
956	# if we are delayed by four ticks, skip them all	2527	# if we are delayed by four ticks or more, skip them all
957	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2528	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
958		2529
959	$TICK_WATCHER->at ($NEXT_TICK);	2530	$TICK_WATCHER->at ($NEXT_TICK);
960	$TICK_WATCHER->start;	2531	$TICK_WATCHER->start;
961	},	2532	},
962	);	2533	);
963		2534
964	_reload_2;	2535	{
		2536	BDB::max_poll_time $TICK * 0.1;
		2537	$BDB_POLL_WATCHER = Event->io (
		2538	reentrant => 0,
		2539	fd => BDB::poll_fileno,
		2540	poll => 'r',
		2541	prio => 0,
		2542	data => WF_AUTOCANCEL,
		2543	cb => \&BDB::poll_cb,
		2544	);
		2545	BDB::min_parallel 8;
		2546
		2547	BDB::set_sync_prepare {
		2548	my $status;
		2549	my $current = $Coro::current;
		2550	(
		2551	sub {
		2552	$status = $!;
		2553	$current->ready; undef $current;
		2554	},
		2555	sub {
		2556	Coro::schedule while defined $current;
		2557	$! = $status;
		2558	},
		2559	)
		2560	};
		2561
		2562	unless ($DB_ENV) {
		2563	$DB_ENV = BDB::db_env_create;
		2564
		2565	cf::sync_job {
		2566	eval {
		2567	BDB::db_env_open
		2568	$DB_ENV,
		2569	$BDB_ENV_DIR,
		2570	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2571	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2572	0666;
		2573
		2574	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
		2575
		2576	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2577	$DB_ENV->set_lk_detect;
		2578	};
		2579
		2580	cf::cleanup "db_env_open(db): $@" if $@;
		2581	};
		2582	}
		2583	}
		2584
		2585	{
		2586	IO::AIO::min_parallel 8;
		2587
		2588	undef $Coro::AIO::WATCHER;
		2589	IO::AIO::max_poll_time $TICK * 0.1;
		2590	$AIO_POLL_WATCHER = Event->io (
		2591	reentrant => 0,
		2592	fd => IO::AIO::poll_fileno,
		2593	poll => 'r',
		2594	prio => 6,
		2595	data => WF_AUTOCANCEL,
		2596	cb => \&IO::AIO::poll_cb,
		2597	);
		2598	}
		2599
		2600	$WRITE_RUNTIME_WATCHER = Event->timer (
		2601	reentrant => 0,
		2602	data => WF_AUTOCANCEL,
		2603	after => 1,
		2604	interval => 10,
		2605	prio => 6, # keep it lowest so it acts like a watchdog
		2606	cb => Coro::unblock_sub {
		2607	write_runtime
		2608	or warn "ERROR: unable to write runtime file: $!";
		2609	},
		2610	);
		2611
		2612	END { cf::emergency_save }
965		2613
966	1	2614	1
967		2615

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