ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC vs.
Revision 1.195 by root, Fri Jan 26 20:59:57 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 Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
10	use YAML::Syck ();	24	use YAML::Syck ();
11	use Time::HiRes;	25	use Time::HiRes;
12	use Event;	26
13	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		28
		29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
14		30
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
16	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
17		33
18	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		35
20	_init_vars;
21
22	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
23	our @EVENT;	44	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
25		46
26	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
27	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
28	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
29		53
30	our %CFG;	54	our %CFG;
31		55
32	our $uptime;	56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
33		58
34	$uptime ||= time;	59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
35		87
36	#############################################################################	88	#############################################################################
37		89
38	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
39		91
40	=over 4	92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
41		102
42	=item $cf::LIBDIR	103	=item $cf::LIBDIR
43		104
44	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
45	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
46		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
47	=item $cf::TICK	112	=item $cf::TICK
48		113
49	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
50		115
51	=item %cf::CFG	116	=item %cf::CFG
52		117
53	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
54	from wherever your confdir points to.	119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
55		127
56	=back	128	=back
57		129
58	=cut	130	=cut
59		131
60	BEGIN {	132	BEGIN {
61	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
63	$msg .= "\n"	137	$msg .= "\n"
64	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
65		139
66	print STDERR "cfperl: $msg";
67	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
68	};	141	};
69	}	142	}
70		143
		144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		150
73	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	152	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
76	no strict 'refs';	160	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	162	}
79		163
80	$Event::DIED = sub {	164	$Event::DIED = sub {
81	warn "error in event callback: @_";	165	warn "error in event callback: @_";
82	};	166	};
83		167
84	my %ext_pkg;
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89
90	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
91		169
92	=over 4	170	=over 4
93		171
		172	=item dumpval $ref
		173
94	=cut	174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
95		194
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
97		196
98	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
99		198
…		…
115	sub to_json($) {	214	sub to_json($) {
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
117	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
118	}	217	}
119		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 90 + 10;
		355	# 10 is the runtime save interval, for a monotonic clock
		356	# 60 allows for the watchdog to kill the server.
		357
		358	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		359	and return;
		360
		361	aio_fsync $fh
		362	and return;
		363
		364	close $fh
		365	or return;
		366
		367	aio_rename "$runtime~", $runtime
		368	and return;
		369
		370	1
		371	}
		372
120	=back	373	=back
121		374
122	=cut	375	=cut
123		376
124	#############################################################################	377	#############################################################################
125		378
126	=head2 EVENTS AND OBJECT ATTACHMENTS	379	=head2 ATTACHABLE OBJECTS
		380
		381	Many objects in crossfire are so-called attachable objects. That means you can
		382	attach callbacks/event handlers (a collection of which is called an "attachment")
		383	to it. All such attachable objects support the following methods.
		384
		385	In the following description, CLASS can be any of C<global>, C<object>
		386	C<player>, C<client> or C<map> (i.e. the attachable objects in
		387	crossfire+).
127		388
128	=over 4	389	=over 4
129		390
130	=item $object->attach ($attachment, key => $value...)
131
132	=item $object->detach ($attachment)
133
134	Attach/detach a pre-registered attachment to an object.
135
136	=item $player->attach ($attachment, key => $value...)
137
138	=item $player->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to a player.
141
142	=item $map->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
143		392
144	=item $map->detach ($attachment)	393	=item $attachable->detach ($attachment)
145		394
146	Attach/detach a pre-registered attachment to a map.	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
147		397
148	=item $bool = $object->attached ($name)	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
149		400
150	=item $bool = $player->attached ($name)	401	$obj->attach (minesweeper => width => 10, height => 10);
151		402
152	=item $bool = $map->attached ($name)	403	=item $bool = $attachable->attached ($name)
153		404
154	Checks wether the named attachment is currently attached to the object.	405	Checks wether the named attachment is currently attached to the object.
155		406
156	=item cf::attach_global ...	407	=item cf::CLASS->attach ...
157		408
158	Attach handlers for global events.	409	=item cf::CLASS->detach ...
159		410
160	This and all following C<attach_*>-functions expect any number of the	411	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	412	CLASS. See the next function for an explanation of its arguments.
		413
		414	You can attach to global events by using the C<cf::global> class.
		415
		416	Example, log all player logins:
		417
		418	cf::player->attach (
		419	on_login => sub {
		420	my ($pl) = @_;
		421	...
		422	},
		423	);
		424
		425	Example, attach to the jeweler skill:
		426
		427	cf::object->attach (
		428	type => cf::SKILL,
		429	subtype => cf::SK_JEWELER,
		430	on_use_skill => sub {
		431	my ($sk, $ob, $part, $dir, $msg) = @_;
		432	...
		433	},
		434	);
		435
		436	=item cf::CLASS::attachment $name, ...
		437
		438	Register an attachment by C<$name> through which attachable objects of the
		439	given CLASS can refer to this attachment.
		440
		441	Some classes such as crossfire maps and objects can specify attachments
		442	that are attached at load/instantiate time, thus the need for a name.
		443
		444	These calls expect any number of the following handler/hook descriptions:
162		445
163	=over 4	446	=over 4
164		447
165	=item prio => $number	448	=item prio => $number
166		449
…		…
168	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	452	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	453	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	454	unless you know what you are doing.
172		455
		456	=item type => $type
		457
		458	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		459	given type of objects only (the additional parameter C<subtype> can be
		460	used to further limit to the given subtype).
		461
173	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
174		463
175	Call the given code reference whenever the named event happens (event is	464	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	465	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	476	object/class are recognised.
188		477
189	=back	478	=back
190		479
191	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
192		482
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
195	type.	485	my ($self, $victim) = @_;
196		486	...
197	=item cf::attach_to_objects ...
198
199	Attach handlers to all objects. Do not use this except for debugging or
200	very rare events, as handlers are (obviously) called for I<all> objects in
201	the game.
202
203	=item cf::attach_to_players ...
204
205	Attach handlers to all players.
206
207	=item cf::attach_to_maps ...
208
209	Attach handlers to all maps.
210
211	=item cf:register_attachment $name, ...
212
213	Register an attachment by name through which objects can refer to this
214	attachment.
215
216	=item cf:register_player_attachment $name, ...
217
218	Register an attachment by name through which players can refer to this
219	attachment.
220
221	=item cf:register_map_attachment $name, ...
222
223	Register an attachment by name through which maps can refer to this
224	attachment.
225
226	=cut
227
228	# the following variables are defined in .xs and must not be re-created
229	our @CB_GLOBAL = (); # registry for all global events
230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
231	our @CB_PLAYER = ();
232	our @CB_TYPE = (); # registry for type (cf-object class) based events
233	our @CB_MAP = ();
234
235	my %attachment;
236
237	sub _attach_cb($\%$$$) {
238	my ($registry, $undo, $event, $prio, $cb) = @_;
239
240	use sort 'stable';
241
242	$cb = [$prio, $cb];
243
244	@{$registry->[$event]} = sort
245	{ $a->[0] cmp $b->[0] }
246	@{$registry->[$event] || []}, $cb;
247
248	push @{$undo->{cb}}, [$event, $cb];
249	}
250
251	# attach handles attaching event callbacks
252	# the only thing the caller has to do is pass the correct
253	# registry (== where the callback attaches to).
254	sub _attach(\@$@) {
255	my ($registry, $klass, @arg) = @_;
256
257	my $prio = 0;
258
259	my %undo = (
260	registry => $registry,
261	cb => [],
262	);
263
264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
265
266	while (@arg) {
267	my $type = shift @arg;
268
269	if ($type eq "prio") {
270	$prio = shift @arg;
271
272	} elsif ($type eq "package") {
273	my $pkg = shift @arg;
274
275	while (my ($name, $id) = each %cb_id) {
276	if (my $cb = $pkg->can ($name)) {
277	_attach_cb $registry, %undo, $id, $prio, $cb;
278	}
279	}	487	}
280
281	} elsif (exists $cb_id{$type}) {
282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
283
284	} elsif (ref $type) {
285	warn "attaching objects not supported, ignoring.\n";
286
287	} else {
288	shift @arg;
289	warn "attach argument '$type' not supported, ignoring.\n";
290	}
291	}
292
293	\%undo
294	}
295
296	sub _attach_attachment {
297	my ($obj, $name, %arg) = @_;
298
299	return if exists $obj->{_attachment}{$name};
300
301	my $res;
302
303	if (my $attach = $attachment{$name}) {
304	my $registry = $obj->registry;
305
306	for (@$attach) {
307	my ($klass, @attach) = @$_;
308	$res = _attach @$registry, $klass, @attach;
309	}
310
311	$obj->{$name} = \%arg;
312	} else {
313	warn "object uses attachment '$name' that is not available, postponing.\n";
314	}
315
316	$obj->{_attachment}{$name} = undef;
317
318	$res->{attachment} = $name;
319	$res
320	}
321
322	*cf::object::attach =
323	*cf::player::attach =
324	*cf::map::attach = sub {
325	my ($obj, $name, %arg) = @_;
326
327	_attach_attachment $obj, $name, %arg;
328	};
329
330	# all those should be optimised
331	*cf::object::detach =
332	*cf::player::detach =
333	*cf::map::detach = sub {
334	my ($obj, $name) = @_;
335
336	delete $obj->{_attachment}{$name};
337	reattach ($obj);
338	};
339
340	*cf::object::attached =
341	*cf::player::attached =
342	*cf::map::attached = sub {
343	my ($obj, $name) = @_;
344
345	exists $obj->{_attachment}{$name}
346	};
347
348	sub attach_global {
349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
350	}
351
352	sub attach_to_type {
353	my $type = shift;
354	my $subtype = shift;
355
356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_objects {
360	_attach @CB_OBJECT, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_players {
364	_attach @CB_PLAYER, KLASS_PLAYER, @_
365	}
366
367	sub attach_to_maps {
368	_attach @CB_MAP, KLASS_MAP, @_
369	}
370
371	sub register_attachment {
372	my $name = shift;
373
374	$attachment{$name} = [[KLASS_OBJECT, @_]];
375	}
376
377	sub register_player_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_PLAYER, @_]];
381	}
382
383	sub register_map_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_MAP, @_]];
387	}
388
389	our $override;
390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
391
392	sub override {
393	$override = 1;
394	@invoke_results = ();
395	}
396
397	sub do_invoke {
398	my $event = shift;
399	my $callbacks = shift;
400
401	@invoke_results = ();
402
403	local $override;
404
405	for (@$callbacks) {
406	eval { &{$_->[1]} };
407
408	if ($@) {
409	warn "$@";
410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
411	override;
412	}
413
414	return 1 if $override;
415	}
416
417	0	488	}
418	}
419		489
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	490	=item $attachable->valid
421
422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
423
424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
425
426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
427
428	Generate a global/object/player/map-specific event with the given arguments.
429
430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
431	removed in future versions), and there is no public API to access override
432	results (if you must, access C<@cf::invoke_results> directly).
433
434	=back
435
436	=cut
437
438	#############################################################################
439
440	=head2 METHODS VALID FOR ALL CORE OBJECTS
441
442	=over 4
443
444	=item $object->valid, $player->valid, $map->valid
445		491
446	Just because you have a perl object does not mean that the corresponding	492	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	493	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	494	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	495	can be used to test for existence of the C object part without causing an
450	exception.	496	exception.
451		497
		498	=cut
		499
		500	# the following variables are defined in .xs and must not be re-created
		501	our @CB_GLOBAL = (); # registry for all global events
		502	our @CB_ATTACHABLE = (); # registry for all attachables
		503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
		506	our @CB_TYPE = (); # registry for type (cf-object class) based events
		507	our @CB_MAP = ();
		508
		509	my %attachment;
		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
		517	sub _attach_cb($$$$) {
		518	my ($registry, $event, $prio, $cb) = @_;
		519
		520	use sort 'stable';
		521
		522	$cb = [$prio, $cb];
		523
		524	@{$registry->[$event]} = sort
		525	{ $a->[0] cmp $b->[0] }
		526	@{$registry->[$event] || []}, $cb;
		527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		531
		532	# attach handles attaching event callbacks
		533	# the only thing the caller has to do is pass the correct
		534	# registry (== where the callback attaches to).
		535	sub _attach {
		536	my ($registry, $klass, @arg) = @_;
		537
		538	my $object_type;
		539	my $prio = 0;
		540	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		541
		542	#TODO: get rid of this hack
		543	if ($attachable_klass{$klass}) {
		544	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		545	}
		546
		547	while (@arg) {
		548	my $type = shift @arg;
		549
		550	if ($type eq "prio") {
		551	$prio = shift @arg;
		552
		553	} elsif ($type eq "type") {
		554	$object_type = shift @arg;
		555	$registry = $CB_TYPE[$object_type] ||= [];
		556
		557	} elsif ($type eq "subtype") {
		558	defined $object_type or Carp::croak "subtype specified without type";
		559	my $object_subtype = shift @arg;
		560	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		561
		562	} elsif ($type eq "package") {
		563	my $pkg = shift @arg;
		564
		565	while (my ($name, $id) = each %cb_id) {
		566	if (my $cb = $pkg->can ($name)) {
		567	_attach_cb $registry, $id, $prio, $cb;
		568	}
		569	}
		570
		571	} elsif (exists $cb_id{$type}) {
		572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		573
		574	} elsif (ref $type) {
		575	warn "attaching objects not supported, ignoring.\n";
		576
		577	} else {
		578	shift @arg;
		579	warn "attach argument '$type' not supported, ignoring.\n";
		580	}
		581	}
		582	}
		583
		584	sub _object_attach {
		585	my ($obj, $name, %arg) = @_;
		586
		587	return if exists $obj->{_attachment}{$name};
		588
		589	if (my $attach = $attachment{$name}) {
		590	my $registry = $obj->registry;
		591
		592	for (@$attach) {
		593	my ($klass, @attach) = @$_;
		594	_attach $registry, $klass, @attach;
		595	}
		596
		597	$obj->{$name} = \%arg;
		598	} else {
		599	warn "object uses attachment '$name' that is not available, postponing.\n";
		600	}
		601
		602	$obj->{_attachment}{$name} = undef;
		603	}
		604
		605	sub cf::attachable::attach {
		606	if (ref $_[0]) {
		607	_object_attach @_;
		608	} else {
		609	_attach shift->_attach_registry, @_;
		610	}
		611	};
		612
		613	# all those should be optimised
		614	sub cf::attachable::detach {
		615	my ($obj, $name) = @_;
		616
		617	if (ref $obj) {
		618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
		624
		625	sub cf::attachable::attached {
		626	my ($obj, $name) = @_;
		627
		628	exists $obj->{_attachment}{$name}
		629	}
		630
		631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
		636
		637	sub cf::\L$klass\E::attachment {
		638	my \$name = shift;
		639
		640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
		644	}
		645
		646	our $override;
		647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		648
		649	sub override {
		650	$override = 1;
		651	@invoke_results = ();
		652	}
		653
		654	sub do_invoke {
		655	my $event = shift;
		656	my $callbacks = shift;
		657
		658	@invoke_results = ();
		659
		660	local $override;
		661
		662	for (@$callbacks) {
		663	eval { &{$_->[1]} };
		664
		665	if ($@) {
		666	warn "$@";
		667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		668	override;
		669	}
		670
		671	return 1 if $override;
		672	}
		673
		674	0
		675	}
		676
		677	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		678
		679	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		680
		681	Generate an object-specific event with the given arguments.
		682
		683	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		684	removed in future versions), and there is no public API to access override
		685	results (if you must, access C<@cf::invoke_results> directly).
		686
452	=back	687	=back
453		688
454	=cut	689	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		690
460	#############################################################################	691	#############################################################################
461	# object support	692	# object support
462		693
463	sub instantiate {
464	my ($obj, $data) = @_;
465
466	$data = from_json $data;
467
468	for (@$data) {
469	my ($name, $args) = @$_;
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}
474
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
478	my $registry = $obj->registry;	700	my $registry = $obj->registry;
479		701
480	@$registry = ();	702	@$registry = ();
481		703
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		705
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	708	for (@$attach) {
487	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
489	}	711	}
490	} else {	712	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	714	}
493	}	715	}
494	}	716	}
495		717
496	sub object_freezer_save {	718	cf::attachable->attach (
497	my ($filename, $rdata, $objs) = @_;
498
499	if (length $$rdata) {
500	warn sprintf "saving %s (%d,%d)\n",
501	$filename, length $$rdata, scalar @$objs;
502
503	if (open my $fh, ">:raw", "$filename~") {
504	chmod SAVE_MODE, $fh;
505	syswrite $fh, $$rdata;
506	close $fh;
507
508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
509	chmod SAVE_MODE, $fh;
510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
511	close $fh;
512	rename "$filename.pst~", "$filename.pst";
513	} else {
514	unlink "$filename.pst";
515	}
516
517	rename "$filename~", $filename;
518	} else {
519	warn "FATAL: $filename~: $!\n";
520	}
521	} else {
522	unlink $filename;
523	unlink "$filename.pst";
524	}
525	}
526
527	sub object_thawer_load {
528	my ($filename) = @_;
529
530	local $/;
531
532	my $av;
533
534	#TODO: use sysread etc.
535	if (open my $data, "<:raw:perlio", $filename) {
536	$data = <$data>;
537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
538	$av = eval { (Storable::thaw <$pst>)->{objs} };
539	}
540	return ($data, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
548	on_clone => sub {	732	on_clone => sub {
549	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
550		734
551	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
552		736
553	%$dst = %$src;	737	%$dst = %$src;
554		738
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	740	if exists $src->{_attachment};
557	},	741	},
558	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
		751
		752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		753	chmod SAVE_MODE, $fh;
		754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		755	aio_fsync $fh;
		756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
		771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
		775	} else {
		776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
		779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
		788	}
		789
		790	sub object_thawer_load {
		791	my ($filename) = @_;
		792
		793	my ($data, $av);
		794
		795	(aio_load $filename, $data) >= 0
		796	or return;
		797
		798	unless (aio_stat "$filename.pst") {
		799	(aio_load "$filename.pst", $av) >= 0
		800	or return;
		801	$av = eval { (Storable::thaw $av)->{objs} };
		802	}
		803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
559		808
560	#############################################################################	809	#############################################################################
561	# old plug-in events	810	# command handling &c
562		811
563	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		813
567	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
568	or return;	815	$name.
569		816
570	&$cb	817	=cut
571	}
572
573	sub inject_global_event {
574	my $event = shift;
575
576	my $cb = $hook[$event]
577	or return;
578
579	List::Util::max map &$_, values %$cb
580	}
581
582	sub inject_command {
583	my ($name, $obj, $params) = @_;
584
585	for my $cmd (@{ $command{$name} }) {
586	$cmd->[1]->($obj, $params);
587	}
588
589	-1
590	}
591		818
592	sub register_command {	819	sub register_command {
593	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
594		821
595	my $caller = caller;	822	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
597		824
598	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
601		836
602	sub register_extcmd {	837	sub register_extcmd {
603	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
604		839
605	my $caller = caller;	840	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	841	}
610		842
611	sub register {	843	cf::player->attach (
612	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
613		846
614	#TODO	847	my $cb = $COMMAND{$name}
615	}	848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
616		874
617	sub load_extension {	875	sub load_extension {
618	my ($path) = @_;	876	my ($path) = @_;
619		877
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
621	my $base = $1;	879	my $base = $1;
622	my $pkg = $1;	880	my $pkg = $1;
623	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
625		883
626	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
627		885
628	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
629	or die "$path: $!";	887	or die "$path: $!";
630		888
631	my $source =	889	my $source =
632	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
633	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
635	. "\n};\n1";	893	. "\n};\n1";
636		894
637	eval $source	895	unless (eval $source) {
638	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
639		897	: "extension disabled.\n";
640	push @exts, $pkg;	898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
641	$ext_pkg{$base} = $pkg;	899	warn $@;
642		900	warn "mandatory extension failed to load, exiting.\n";
643	# no strict 'refs';	901	exit 1;
644	# @{"$pkg\::ISA"} = ext::;	902	}
645		903	die $@;
646	register $base, $pkg;
647	}
648
649	sub unload_extension {
650	my ($pkg) = @_;
651
652	warn "removing extension $pkg\n";
653
654	# remove hooks
655	#TODO
656	# for my $idx (0 .. $#PLUGIN_EVENT) {
657	# delete $hook[$idx]{$pkg};
658	# }	904	}
659		905
660	# remove commands	906	push @EXTS, $pkg;
661	for my $name (keys %command) {
662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
663
664	if (@cb) {
665	$command{$name} = \@cb;
666	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
667	} else {
668	delete $command{$name};
669	delete $COMMAND{"$name\000"};
670	}
671	}
672
673	# remove extcmds
674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
675	delete $extcmd{$name};
676	}
677
678	if (my $cb = $pkg->can ("unload")) {
679	eval {
680	$cb->($pkg);
681	1
682	} or warn "$pkg unloaded, but with errors: $@";
683	}
684
685	Symbol::delete_package $pkg;
686	}	907	}
687		908
688	sub load_extensions {	909	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;	911	next unless -r $ext;
693	eval {	912	eval {
694	load_extension $ext;	913	load_extension $ext;
695	1	914	1
696	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
697	}	916	}
698	}	917	}
699		918
700	#############################################################################	919	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703		920
704	attach_to_players	921	=head2 CORE EXTENSIONS
705	on_extcmd => sub {	922
		923	Functions and methods that extend core crossfire objects.
		924
		925	=cut
		926
		927	package cf::player;
		928
		929	use Coro::AIO;
		930
		931	=head3 cf::player
		932
		933	=over 4
		934
		935	=item cf::player::find $login
		936
		937	Returns the given player object, loading it if necessary (might block).
		938
		939	=cut
		940
		941	sub playerdir($) {
		942	cf::localdir
		943	. "/"
		944	. cf::playerdir
		945	. "/"
		946	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		947	}
		948
		949	sub path($) {
		950	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		951
		952	(playerdir $login) . "/$login.pl"
		953	}
		954
		955	sub find_active($) {
		956	$cf::PLAYER{$_[0]}
		957	and $cf::PLAYER{$_[0]}->active
		958	and $cf::PLAYER{$_[0]}
		959	}
		960
		961	sub exists($) {
		962	my ($login) = @_;
		963
		964	$cf::PLAYER{$login}
		965	or cf::sync_job { !aio_stat path $login }
		966	}
		967
		968	sub find($) {
		969	return $cf::PLAYER{$_[0]} || do {
		970	my $login = $_[0];
		971
		972	my $guard = cf::lock_acquire "user_find:$login";
		973
		974	$cf::PLAYER{$_[0]} || do {
		975	my $pl = load_pl path $login
		976	or return;
		977	$cf::PLAYER{$login} = $pl
		978	}
		979	}
		980	}
		981
		982	sub save($) {
		983	my ($pl) = @_;
		984
		985	return if $pl->{deny_save};
		986
		987	my $path = path $pl;
		988	my $guard = cf::lock_acquire "user_save:$path";
		989
		990	return if $pl->{deny_save};
		991
		992	aio_mkdir playerdir $pl, 0770;
		993	$pl->{last_save} = $cf::RUNTIME;
		994
		995	$pl->save_pl ($path);
		996	Coro::cede;
		997	}
		998
		999	sub new($) {
		1000	my ($login) = @_;
		1001
		1002	my $self = create;
		1003
		1004	$self->ob->name ($login);
		1005	$self->{deny_save} = 1;
		1006
		1007	$cf::PLAYER{$login} = $self;
		1008
		1009	$self
		1010	}
		1011
		1012	=item $pl->quit_character
		1013
		1014	Nukes the player without looking back. If logged in, the connection will
		1015	be destroyed. May block for a long time.
		1016
		1017	=cut
		1018
		1019	sub quit_character {
		1020	my ($pl) = @_;
		1021
		1022	$pl->{deny_save} = 1;
		1023	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1024
		1025	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1026	$pl->deactivate;
		1027	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1028	$pl->ns->destroy if $pl->ns;
		1029
		1030	my $path = playerdir $pl;
		1031	my $temp = "$path~$cf::RUNTIME~deleting~";
		1032	aio_rename $path, $temp;
		1033	delete $cf::PLAYER{$pl->ob->name};
		1034	$pl->destroy;
		1035	IO::AIO::aio_rmtree $temp;
		1036	}
		1037
		1038	=item cf::player::list_logins
		1039
		1040	Returns am arrayref of all valid playernames in the system, can take a
		1041	while and may block, so not sync_job-capable, ever.
		1042
		1043	=cut
		1044
		1045	sub list_logins {
		1046	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1047	or return [];
		1048
		1049	my @logins;
		1050
		1051	for my $login (@$dirs) {
		1052	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1053	aio_read $fh, 0, 512, my $buf, 0 or next;
		1054	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1055
		1056	utf8::decode $login;
		1057	push @logins, $login;
		1058	}
		1059
		1060	\@logins
		1061	}
		1062
		1063	=item $player->maps
		1064
		1065	Returns an arrayref of map paths that are private for this
		1066	player. May block.
		1067
		1068	=cut
		1069
		1070	sub maps($) {
		1071	my ($pl) = @_;
		1072
		1073	my $files = aio_readdir playerdir $pl
		1074	or return;
		1075
		1076	my @paths;
		1077
		1078	for (@$files) {
		1079	utf8::decode $_;
		1080	next if /\.(?:pl|pst)$/;
		1081	next unless /^$PATH_SEP/o;
		1082
		1083	s/\.map$//;
		1084	push @paths, "~" . $pl->ob->name . "/" . $_;
		1085	}
		1086
		1087	\@paths
		1088	}
		1089
		1090	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1091
		1092	Sends an ext reply to the player.
		1093
		1094	=cut
		1095
		1096	sub ext_reply($$$%) {
		1097	my ($self, $id, %msg) = @_;
		1098
		1099	$msg{msgid} = $id;
		1100
		1101	$self->send ("ext " . cf::to_json \%msg);
		1102	}
		1103
		1104	package cf;
		1105
		1106	=back
		1107
		1108
		1109	=head3 cf::map
		1110
		1111	=over 4
		1112
		1113	=cut
		1114
		1115	package cf::map;
		1116
		1117	use Fcntl;
		1118	use Coro::AIO;
		1119
		1120	use overload
		1121	'""' => \&as_string,
		1122	fallback => 1;
		1123
		1124	our $MAX_RESET = 3600;
		1125	our $DEFAULT_RESET = 3000;
		1126
		1127	sub generate_random_map {
		1128	my ($self, $rmp) = @_;
		1129	# mit "rum" bekleckern, nicht
		1130	$self->_create_random_map (
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region}), $rmp->{custom}
		1142	)
		1143	}
		1144
		1145	=item cf::map->register ($regex, $prio)
		1146
		1147	Register a handler for the map path matching the given regex at the
		1148	givne priority (higher is better, built-in handlers have priority 0, the
		1149	default).
		1150
		1151	=cut
		1152
		1153	sub register {
		1154	my (undef, $regex, $prio) = @_;
		1155	my $pkg = caller;
		1156
		1157	no strict;
		1158	push @{"$pkg\::ISA"}, __PACKAGE__;
		1159
		1160	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1161	}
		1162
		1163	# also paths starting with '/'
		1164	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1165
		1166	sub thawer_merge {
		1167	my ($self, $merge) = @_;
		1168
		1169	# we have to keep some variables in memory intact
		1170	local $self->{path};
		1171	local $self->{load_path};
		1172	local $self->{deny_save};
		1173	local $self->{deny_reset};
		1174
		1175	$self->SUPER::thawer_merge ($merge);
		1176	}
		1177
		1178	sub normalise {
		1179	my ($path, $base) = @_;
		1180
		1181	$path = "$path"; # make sure its a string
		1182
		1183	# map plan:
		1184	#
		1185	# /! non-realised random map exit (special hack!)
		1186	# {... are special paths that are not being touched
		1187	# ?xxx/... are special absolute paths
		1188	# ?random/... random maps
		1189	# /... normal maps
		1190	# ~user/... per-player map of a specific user
		1191
		1192	$path =~ s/$PATH_SEP/\//go;
		1193
		1194	# treat it as relative path if it starts with
		1195	# something that looks reasonable
		1196	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1197	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1198
		1199	$base =~ s{[^/]+/?$}{};
		1200	$path = "$base/$path";
		1201	}
		1202
		1203	for ($path) {
		1204	redo if s{//}{/};
		1205	redo if s{/\.?/}{/};
		1206	redo if s{/[^/]+/\.\./}{/};
		1207	}
		1208
		1209	$path
		1210	}
		1211
		1212	sub new_from_path {
		1213	my (undef, $path, $base) = @_;
		1214
		1215	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1216
		1217	$path = normalise $path, $base;
		1218
		1219	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1220	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1221	my $self = bless cf::map::new, $pkg;
		1222	$self->{path} = $path; $self->path ($path);
		1223	$self->init; # pass $1 etc.
		1224	return $self;
		1225	}
		1226	}
		1227
		1228	Carp::carp "unable to resolve path '$path' (base '$base').";
		1229	()
		1230	}
		1231
		1232	sub init {
		1233	my ($self) = @_;
		1234
		1235	$self
		1236	}
		1237
		1238	sub as_string {
		1239	my ($self) = @_;
		1240
		1241	"$self->{path}"
		1242	}
		1243
		1244	# the displayed name, this is a one way mapping
		1245	sub visible_name {
		1246	&as_string
		1247	}
		1248
		1249	# the original (read-only) location
		1250	sub load_path {
		1251	my ($self) = @_;
		1252
		1253	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1254	}
		1255
		1256	# the temporary/swap location
		1257	sub save_path {
		1258	my ($self) = @_;
		1259
		1260	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1261	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1262	}
		1263
		1264	# the unique path, undef == no special unique path
		1265	sub uniq_path {
		1266	my ($self) = @_;
		1267
		1268	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1269	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1270	}
		1271
		1272	# and all this just because we cannot iterate over
		1273	# all maps in C++...
		1274	sub change_all_map_light {
		1275	my ($change) = @_;
		1276
		1277	$_->change_map_light ($change)
		1278	for grep $_->outdoor, values %cf::MAP;
		1279	}
		1280
		1281	sub unlink_save {
		1282	my ($self) = @_;
		1283
		1284	utf8::encode (my $save = $self->save_path);
		1285	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1286	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1287	}
		1288
		1289	sub load_header_from($) {
		1290	my ($self, $path) = @_;
		1291
		1292	utf8::encode $path;
		1293	aio_open $path, O_RDONLY, 0
		1294	or return;
		1295
		1296	$self->_load_header ($path)
		1297	or return;
		1298
		1299	$self->{load_path} = $path;
		1300
		1301	1
		1302	}
		1303
		1304	sub load_header_orig {
		1305	my ($self) = @_;
		1306
		1307	$self->load_header_from ($self->load_path)
		1308	}
		1309
		1310	sub load_header_temp {
		1311	my ($self) = @_;
		1312
		1313	$self->load_header_from ($self->save_path)
		1314	}
		1315
		1316	sub prepare_temp {
		1317	my ($self) = @_;
		1318
		1319	$self->last_access ((delete $self->{last_access})
		1320	|| $cf::RUNTIME); #d#
		1321	# safety
		1322	$self->{instantiate_time} = $cf::RUNTIME
		1323	if $self->{instantiate_time} > $cf::RUNTIME;
		1324	}
		1325
		1326	sub prepare_orig {
		1327	my ($self) = @_;
		1328
		1329	$self->{load_original} = 1;
		1330	$self->{instantiate_time} = $cf::RUNTIME;
		1331	$self->last_access ($cf::RUNTIME);
		1332	$self->instantiate;
		1333	}
		1334
		1335	sub load_header {
		1336	my ($self) = @_;
		1337
		1338	if ($self->load_header_temp) {
		1339	$self->prepare_temp;
		1340	} else {
		1341	$self->load_header_orig
		1342	or return;
		1343	$self->prepare_orig;
		1344	}
		1345
		1346	1
		1347	}
		1348
		1349	sub find;
		1350	sub find {
		1351	my ($path, $origin) = @_;
		1352
		1353	$path = normalise $path, $origin && $origin->path;
		1354
		1355	cf::lock_wait "map_find:$path";
		1356
		1357	$cf::MAP{$path} || do {
		1358	my $guard = cf::lock_acquire "map_find:$path";
		1359	my $map = new_from_path cf::map $path
		1360	or return;
		1361
		1362	$map->{last_save} = $cf::RUNTIME;
		1363
		1364	$map->load_header
		1365	or return;
		1366
		1367	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1368	# doing this can freeze the server in a sync job, obviously
		1369	#$cf::WAIT_FOR_TICK->wait;
		1370	$map->reset;
		1371	undef $guard;
		1372	return find $path;
		1373	}
		1374
		1375	$cf::MAP{$path} = $map
		1376	}
		1377	}
		1378
		1379	sub pre_load { }
		1380	sub post_load { }
		1381
		1382	sub load {
		1383	my ($self) = @_;
		1384
		1385	my $path = $self->{path};
		1386	my $guard = cf::lock_acquire "map_load:$path";
		1387
		1388	return if $self->in_memory != cf::MAP_SWAPPED;
		1389
		1390	$self->in_memory (cf::MAP_LOADING);
		1391
		1392	$self->alloc;
		1393
		1394	$self->pre_load;
		1395
		1396	$self->_load_objects ($self->{load_path}, 1)
		1397	or return;
		1398
		1399	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1400	if delete $self->{load_original};
		1401
		1402	if (my $uniq = $self->uniq_path) {
		1403	utf8::encode $uniq;
		1404	if (aio_open $uniq, O_RDONLY, 0) {
		1405	$self->clear_unique_items;
		1406	$self->_load_objects ($uniq, 0);
		1407	}
		1408	}
		1409
		1410	Coro::cede;
		1411
		1412	# now do the right thing for maps
		1413	$self->link_multipart_objects;
		1414
		1415	unless ($self->{deny_activate}) {
		1416	$self->decay_objects;
		1417	$self->fix_auto_apply;
		1418	$self->update_buttons;
		1419	Coro::cede;
		1420	$self->set_darkness_map;
		1421	$self->difficulty ($self->estimate_difficulty)
		1422	unless $self->difficulty;
		1423	Coro::cede;
		1424	$self->activate;
		1425	}
		1426
		1427	$self->post_load;
		1428
		1429	$self->in_memory (cf::MAP_IN_MEMORY);
		1430	}
		1431
		1432	sub customise_for {
706	my ($pl, $buf) = @_;	1433	my ($self, $ob) = @_;
707		1434
708	my $msg = eval { from_json $buf };	1435	return find "~" . $ob->name . "/" . $self->{path}
		1436	if $self->per_player;
709		1437
710	if (ref $msg) {	1438	$self
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1439	}
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1440
713	$pl->ext_reply ($msg->{msgid}, %reply);	1441	# find and load all maps in the 3x3 area around a map
714	}	1442	sub load_diag {
		1443	my ($map) = @_;
		1444
		1445	my @diag; # diagonal neighbours
		1446
		1447	for (0 .. 3) {
		1448	my $neigh = $map->tile_path ($_)
		1449	or next;
		1450	$neigh = find $neigh, $map
		1451	or next;
		1452	$neigh->load;
		1453
		1454	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1455	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1456	}
		1457
		1458	for (@diag) {
		1459	my $neigh = find @$_
		1460	or next;
		1461	$neigh->load;
		1462	}
		1463	}
		1464
		1465	sub find_sync {
		1466	my ($path, $origin) = @_;
		1467
		1468	cf::sync_job { find $path, $origin }
		1469	}
		1470
		1471	sub do_load_sync {
		1472	my ($map) = @_;
		1473
		1474	cf::sync_job { $map->load };
		1475	}
		1476
		1477	our %MAP_PREFETCH;
		1478	our $MAP_PREFETCHER = undef;
		1479
		1480	sub find_async {
		1481	my ($path, $origin) = @_;
		1482
		1483	$path = normalise $path, $origin && $origin->{path};
		1484
		1485	if (my $map = $cf::MAP{$path}) {
		1486	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1487	}
		1488
		1489	undef $MAP_PREFETCH{$path};
		1490	$MAP_PREFETCHER ||= cf::async {
		1491	while (%MAP_PREFETCH) {
		1492	for my $path (keys %MAP_PREFETCH) {
		1493	my $map = find $path
		1494	or next;
		1495	$map->load;
		1496
		1497	delete $MAP_PREFETCH{$path};
715	}	1498	}
		1499	}
		1500	undef $MAP_PREFETCHER;
		1501	};
		1502	$MAP_PREFETCHER->prio (6);
		1503
		1504	()
		1505	}
		1506
		1507	sub save {
		1508	my ($self) = @_;
		1509
		1510	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1511
		1512	$self->{last_save} = $cf::RUNTIME;
		1513
		1514	return unless $self->dirty;
		1515
		1516	my $save = $self->save_path; utf8::encode $save;
		1517	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1518
		1519	$self->{load_path} = $save;
		1520
		1521	return if $self->{deny_save};
		1522
		1523	local $self->{last_access} = $self->last_access;#d#
		1524
		1525	cf::async {
		1526	$_->contr->save for $self->players;
		1527	};
		1528
		1529	if ($uniq) {
		1530	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1531	$self->_save_objects ($uniq, cf::IO_UNIQUES);
716	} else {	1532	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1533	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
718	}
719
720	cf::override;
721	},	1534	}
722	;	1535	}
723		1536
724	#############################################################################	1537	sub swap_out {
725	# load/save/clean perl data associated with a map
726
727	*cf::mapsupport::on_clean = sub {
728	my ($map) = @_;	1538	my ($self) = @_;
729		1539
730	my $path = $map->tmpname;	1540	# save first because save cedes
731	defined $path or return;	1541	$self->save;
732		1542
733	unlink "$path.pst";	1543	my $lock = cf::lock_acquire "map_data:" . $self->path;
734	};
735		1544
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1545	return if $self->players;
		1546	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1547	return if $self->{deny_save};
737		1548
738	#############################################################################	1549	$self->clear;
739	# load/save perl data associated with player->ob objects	1550	$self->in_memory (cf::MAP_SWAPPED);
740
741	sub all_objects(@) {
742	@_, map all_objects ($_->inv), @_
743	}	1551	}
744		1552
745	# TODO: compatibility cruft, remove when no longer needed	1553	sub reset_at {
746	attach_to_players	1554	my ($self) = @_;
747	on_load => sub {
748	my ($pl, $path) = @_;
749		1555
750	for my $o (all_objects $pl->ob) {	1556	# TODO: safety, remove and allow resettable per-player maps
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1557	return 1e99 if $self->isa ("ext::map_per_player");#d#
752	$o->set_ob_key_value ("_perl_data");	1558	return 1e99 if $self->{deny_reset};
753		1559
754	%$o = %{ Storable::thaw pack "H*", $value };	1560	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
755	}	1561	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
756	}	1562
		1563	$time + $to
		1564	}
		1565
		1566	sub should_reset {
		1567	my ($self) = @_;
		1568
		1569	$self->reset_at <= $cf::RUNTIME
		1570	}
		1571
		1572	sub reset {
		1573	my ($self) = @_;
		1574
		1575	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1576
		1577	return if $self->players;
		1578	return if $self->isa ("ext::map_per_player");#d#
		1579
		1580	warn "resetting map ", $self->path;#d#
		1581
		1582	delete $cf::MAP{$self->path};
		1583
		1584	$self->in_memory (cf::MAP_SWAPPED);
		1585	$self->clear;
		1586
		1587	$_->clear_links_to ($self) for values %cf::MAP;
		1588
		1589	$self->unlink_save;
		1590	$self->destroy;
		1591	}
		1592
		1593	my $nuke_counter = "aaaa";
		1594
		1595	sub nuke {
		1596	my ($self) = @_;
		1597
		1598	delete $cf::MAP{$self->path};
		1599
		1600	$self->unlink_save;
		1601
		1602	bless $self, "cf::map";
		1603	delete $self->{deny_reset};
		1604	$self->{deny_save} = 1;
		1605	$self->reset_timeout (1);
		1606	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1607
		1608	$cf::MAP{$self->path} = $self;
		1609
		1610	$self->reset; # polite request, might not happen
		1611	}
		1612
		1613	=item cf::map::unique_maps
		1614
		1615	Returns an arrayref of paths of all shared maps that have
		1616	instantiated unique items. May block.
		1617
		1618	=cut
		1619
		1620	sub unique_maps() {
		1621	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1622	or return;
		1623
		1624	my @paths;
		1625
		1626	for (@$files) {
		1627	utf8::decode $_;
		1628	next if /\.pst$/;
		1629	next unless /^$PATH_SEP/o;
		1630
		1631	s/\.map$//;
		1632	push @paths, $_;
757	},	1633	}
758	;
759		1634
760	#############################################################################	1635	\@paths
		1636	}
761		1637
762	=head2 CORE EXTENSIONS	1638	package cf;
763		1639
764	Functions and methods that extend core crossfire objects.	1640	=back
		1641
		1642	=head3 cf::object
		1643
		1644	=cut
		1645
		1646	package cf::object;
765		1647
766	=over 4	1648	=over 4
767		1649
768	=item cf::player::exists $login	1650	=item $ob->inv_recursive
769		1651
770	Returns true when the given account exists.	1652	Returns the inventory of the object _and_ their inventories, recursively.
771		1653
772	=cut	1654	=cut
773		1655
774	sub cf::player::exists($) {	1656	sub inv_recursive_;
775	cf::player::find $_[0]	1657	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1658	map { $_, inv_recursive_ $_->inv } @_
777	}	1659	}
778		1660
		1661	sub inv_recursive {
		1662	inv_recursive_ inv $_[0]
		1663	}
		1664
		1665	package cf;
		1666
		1667	=back
		1668
		1669	=head3 cf::object::player
		1670
		1671	=over 4
		1672
779	=item $object->reply ($npc, $msg[, $flags])	1673	=item $player_object->reply ($npc, $msg[, $flags])
780		1674
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1675	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	1676	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	1677	dialogue with the given NPC character.
784		1678
785	=cut	1679	=cut
786		1680
787	# rough implementation of a future "reply" method that works	1681	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	1682	# with dialog boxes.
		1683	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	1684	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	1685	my ($self, $npc, $msg, $flags) = @_;
791		1686
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1687	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		1688
…		…
797	$msg = $npc->name . " says: $msg" if $npc;	1692	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	1693	$self->message ($msg, $flags);
799	}	1694	}
800	}	1695	}
801		1696
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	1697	=item $player_object->may ("access")
803		1698
804	Sends an ext reply to the player.	1699	Returns wether the given player is authorized to access resource "access"
		1700	(e.g. "command_wizcast").
805		1701
806	=cut	1702	=cut
807		1703
808	sub cf::player::ext_reply($$$%) {	1704	sub cf::object::player::may {
		1705	my ($self, $access) = @_;
		1706
		1707	$self->flag (cf::FLAG_WIZ) ||
		1708	(ref $cf::CFG{"may_$access"}
		1709	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1710	: $cf::CFG{"may_$access"})
		1711	}
		1712
		1713	=item $player_object->enter_link
		1714
		1715	Freezes the player and moves him/her to a special map (C<{link}>).
		1716
		1717	The player should be reasonably safe there for short amounts of time. You
		1718	I<MUST> call C<leave_link> as soon as possible, though.
		1719
		1720	Will never block.
		1721
		1722	=item $player_object->leave_link ($map, $x, $y)
		1723
		1724	Moves the player out of the special C<{link}> map onto the specified
		1725	map. If the map is not valid (or omitted), the player will be moved back
		1726	to the location he/she was before the call to C<enter_link>, or, if that
		1727	fails, to the emergency map position.
		1728
		1729	Might block.
		1730
		1731	=cut
		1732
		1733	sub link_map {
		1734	unless ($LINK_MAP) {
		1735	$LINK_MAP = cf::map::find "{link}"
		1736	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1737	$LINK_MAP->load;
		1738	}
		1739
		1740	$LINK_MAP
		1741	}
		1742
		1743	sub cf::object::player::enter_link {
		1744	my ($self) = @_;
		1745
		1746	$self->deactivate_recursive;
		1747
		1748	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1749
		1750	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1751	if $self->map;
		1752
		1753	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1754	}
		1755
		1756	sub cf::object::player::leave_link {
		1757	my ($self, $map, $x, $y) = @_;
		1758
		1759	my $link_pos = delete $self->{_link_pos};
		1760
		1761	unless ($map) {
		1762	# restore original map position
		1763	($map, $x, $y) = @{ $link_pos || [] };
		1764	$map = cf::map::find $map;
		1765
		1766	unless ($map) {
		1767	($map, $x, $y) = @$EMERGENCY_POSITION;
		1768	$map = cf::map::find $map
		1769	or die "FATAL: cannot load emergency map\n";
		1770	}
		1771	}
		1772
		1773	($x, $y) = (-1, -1)
		1774	unless (defined $x) && (defined $y);
		1775
		1776	# use -1 or undef as default coordinates, not 0, 0
		1777	($x, $y) = ($map->enter_x, $map->enter_y)
		1778	if $x <=0 && $y <= 0;
		1779
		1780	$map->load;
		1781	$map->load_diag;
		1782
		1783	return unless $self->contr->active;
		1784	$self->activate_recursive;
		1785	$self->enter_map ($map, $x, $y);
		1786	}
		1787
		1788	cf::player->attach (
		1789	on_logout => sub {
		1790	my ($pl) = @_;
		1791
		1792	# abort map switching before logout
		1793	if ($pl->ob->{_link_pos}) {
		1794	cf::sync_job {
		1795	$pl->ob->leave_link
		1796	};
		1797	}
		1798	},
		1799	on_login => sub {
		1800	my ($pl) = @_;
		1801
		1802	# try to abort aborted map switching on player login :)
		1803	# should happen only on crashes
		1804	if ($pl->ob->{_link_pos}) {
		1805	$pl->ob->enter_link;
		1806	(async {
		1807	# we need this sleep as the login has a concurrent enter_exit running
		1808	# and this sleep increases chances of the player not ending up in scorn
		1809	$pl->ob->reply (undef,
		1810	"There was an internal problem at your last logout, "
		1811	. "the server will try to bring you to your intended destination in a second.",
		1812	cf::NDI_RED);
		1813	Coro::Timer::sleep 1;
		1814	$pl->ob->leave_link;
		1815	})->prio (2);
		1816	}
		1817	},
		1818	);
		1819
		1820	=item $player_object->goto ($path, $x, $y)
		1821
		1822	=cut
		1823
		1824	sub cf::object::player::goto {
		1825	my ($self, $path, $x, $y) = @_;
		1826
		1827	$self->enter_link;
		1828
		1829	(async {
		1830	my $map = cf::map::find $path;
		1831	$map = $map->customise_for ($self) if $map;
		1832
		1833	# warn "entering ", $map->path, " at ($x, $y)\n"
		1834	# if $map;
		1835
		1836	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1837
		1838	$self->leave_link ($map, $x, $y);
		1839	})->prio (1);
		1840	}
		1841
		1842	=item $player_object->enter_exit ($exit_object)
		1843
		1844	=cut
		1845
		1846	sub parse_random_map_params {
		1847	my ($spec) = @_;
		1848
		1849	my $rmp = { # defaults
		1850	xsize => (cf::rndm 15, 40),
		1851	ysize => (cf::rndm 15, 40),
		1852	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1853	#layout => string,
		1854	};
		1855
		1856	for (split /\n/, $spec) {
		1857	my ($k, $v) = split /\s+/, $_, 2;
		1858
		1859	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1860	}
		1861
		1862	$rmp
		1863	}
		1864
		1865	sub prepare_random_map {
		1866	my ($exit) = @_;
		1867
		1868	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1869
		1870	# all this does is basically replace the /! path by
		1871	# a new random map path (?random/...) with a seed
		1872	# that depends on the exit object
		1873
		1874	my $rmp = parse_random_map_params $exit->msg;
		1875
		1876	if ($exit->map) {
		1877	$rmp->{region} = $exit->map->region_name;
		1878	$rmp->{origin_map} = $exit->map->path;
		1879	$rmp->{origin_x} = $exit->x;
		1880	$rmp->{origin_y} = $exit->y;
		1881	}
		1882
		1883	$rmp->{random_seed} ||= $exit->random_seed;
		1884
		1885	my $data = cf::to_json $rmp;
		1886	my $md5 = Digest::MD5::md5_hex $data;
		1887	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1888
		1889	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1890	aio_write $fh, 0, (length $data), $data, 0;
		1891	undef $fh;
		1892	aio_rename "$meta~", $meta;
		1893
		1894	$exit->slaying ("?random/$md5");
		1895	$exit->msg (undef);
		1896	}
		1897	}
		1898
		1899	sub cf::object::player::enter_exit {
809	my ($self, $id, %msg) = @_;	1900	my ($self, $exit) = @_;
810		1901
811	$msg{msgid} = $id;	1902	return unless $self->type == cf::PLAYER;
812		1903
813	$self->send ("ext " . to_json \%msg);	1904	if ($exit->slaying eq "/!") {
		1905	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1906	cf::sync_job { prepare_random_map $exit };
		1907	}
		1908
		1909	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1910	my $hp = $exit->stats->hp;
		1911	my $sp = $exit->stats->sp;
		1912
		1913	$self->enter_link;
		1914
		1915	(async {
		1916	$self->deactivate_recursive; # just to be sure
		1917	unless (eval {
		1918	$self->goto ($slaying, $hp, $sp);
		1919
		1920	1;
		1921	}) {
		1922	$self->message ("Something went wrong deep within the crossfire server. "
		1923	. "I'll try to bring you back to the map you were before. "
		1924	. "Please report this to the dungeon master!",
		1925	cf::NDI_UNIQUE | cf::NDI_RED);
		1926
		1927	warn "ERROR in enter_exit: $@";
		1928	$self->leave_link;
		1929	}
		1930	})->prio (1);
814	}	1931	}
		1932
		1933	=head3 cf::client
		1934
		1935	=over 4
		1936
		1937	=item $client->send_drawinfo ($text, $flags)
		1938
		1939	Sends a drawinfo packet to the client. Circumvents output buffering so
		1940	should not be used under normal circumstances.
		1941
		1942	=cut
		1943
		1944	sub cf::client::send_drawinfo {
		1945	my ($self, $text, $flags) = @_;
		1946
		1947	utf8::encode $text;
		1948	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1949	}
		1950
		1951
		1952	=item $success = $client->query ($flags, "text", \&cb)
		1953
		1954	Queues a query to the client, calling the given callback with
		1955	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1956	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1957
		1958	Queries can fail, so check the return code. Or don't, as queries will become
		1959	reliable at some point in the future.
		1960
		1961	=cut
		1962
		1963	sub cf::client::query {
		1964	my ($self, $flags, $text, $cb) = @_;
		1965
		1966	return unless $self->state == ST_PLAYING
		1967	|| $self->state == ST_SETUP
		1968	|| $self->state == ST_CUSTOM;
		1969
		1970	$self->state (ST_CUSTOM);
		1971
		1972	utf8::encode $text;
		1973	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1974
		1975	$self->send_packet ($self->{query_queue}[0][0])
		1976	if @{ $self->{query_queue} } == 1;
		1977	}
		1978
		1979	cf::client->attach (
		1980	on_reply => sub {
		1981	my ($ns, $msg) = @_;
		1982
		1983	# this weird shuffling is so that direct followup queries
		1984	# get handled first
		1985	my $queue = delete $ns->{query_queue}
		1986	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1987
		1988	(shift @$queue)->[1]->($msg);
		1989
		1990	push @{ $ns->{query_queue} }, @$queue;
		1991
		1992	if (@{ $ns->{query_queue} } == @$queue) {
		1993	if (@$queue) {
		1994	$ns->send_packet ($ns->{query_queue}[0][0]);
		1995	} else {
		1996	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1997	}
		1998	}
		1999	},
		2000	);
		2001
		2002	=item $client->async (\&cb)
		2003
		2004	Create a new coroutine, running the specified callback. The coroutine will
		2005	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2006	or loss of connection).
		2007
		2008	=cut
		2009
		2010	sub cf::client::async {
		2011	my ($self, $cb) = @_;
		2012
		2013	my $coro = &Coro::async ($cb);
		2014
		2015	$coro->on_destroy (sub {
		2016	delete $self->{_coro}{$coro+0};
		2017	});
		2018
		2019	$self->{_coro}{$coro+0} = $coro;
		2020
		2021	$coro
		2022	}
		2023
		2024	cf::client->attach (
		2025	on_destroy => sub {
		2026	my ($ns) = @_;
		2027
		2028	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2029	},
		2030	);
815		2031
816	=back	2032	=back
817		2033
818	=cut
819
820	#############################################################################
821		2034
822	=head2 SAFE SCRIPTING	2035	=head2 SAFE SCRIPTING
823		2036
824	Functions that provide a safe environment to compile and execute	2037	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	2038	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	2039	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	2040	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	2041	functions and methods that can be called is greatly reduced.
829		2042
830	=cut	2043	=cut
831		2044
832	our $safe = new Safe "safe";	2045	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	2046	our $safe_hole = new Safe::Hole;
…		…
840		2053
841	=pod	2054	=pod
842		2055
843	The following fucntions and emthods are available within a safe environment:	2056	The following fucntions and emthods are available within a safe environment:
844		2057
845	cf::object contr pay_amount pay_player	2058	cf::object contr pay_amount pay_player map
846	cf::object::player player	2059	cf::object::player player
847	cf::player peaceful	2060	cf::player peaceful
		2061	cf::map trigger
848		2062
849	=cut	2063	=cut
850		2064
851	for (	2065	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	2066	["cf::object" => qw(contr pay_amount pay_player map)],
853	["cf::object::player" => qw(player)],	2067	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	2068	["cf::player" => qw(peaceful)],
		2069	["cf::map" => qw(trigger)],
855	) {	2070	) {
856	no strict 'refs';	2071	no strict 'refs';
857	my ($pkg, @funs) = @$_;	2072	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2073	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	2074	for @funs;
…		…
969		2184
970	Immediately write the database to disk I<if it is dirty>.	2185	Immediately write the database to disk I<if it is dirty>.
971		2186
972	=cut	2187	=cut
973		2188
		2189	our $DB;
		2190
974	{	2191	{
975	my $db;
976	my $path = cf::localdir . "/database.pst";	2192	my $path = cf::localdir . "/database.pst";
977		2193
978	sub db_load() {	2194	sub db_load() {
979	warn "loading database $path\n";#d# remove later
980	$db = stat $path ? Storable::retrieve $path : { };	2195	$DB = stat $path ? Storable::retrieve $path : { };
981	}	2196	}
982		2197
983	my $pid;	2198	my $pid;
984		2199
985	sub db_save() {	2200	sub db_save() {
986	warn "saving database $path\n";#d# remove later
987	waitpid $pid, 0 if $pid;	2201	waitpid $pid, 0 if $pid;
988	if (0 == ($pid = fork)) {	2202	if (0 == ($pid = fork)) {
989	$db->{_meta}{version} = 1;	2203	$DB->{_meta}{version} = 1;
990	Storable::nstore $db, "$path~";	2204	Storable::nstore $DB, "$path~";
991	rename "$path~", $path;	2205	rename "$path~", $path;
992	cf::_exit 0 if defined $pid;	2206	cf::_exit 0 if defined $pid;
993	}	2207	}
994	}	2208	}
995		2209
…		…
998	sub db_sync() {	2212	sub db_sync() {
999	db_save if $dirty;	2213	db_save if $dirty;
1000	undef $dirty;	2214	undef $dirty;
1001	}	2215	}
1002		2216
1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2217	my $idle = Event->idle (
1004	db_sync;	2218	reentrant => 0,
		2219	min => 10,
		2220	max => 20,
		2221	repeat => 0,
		2222	data => WF_AUTOCANCEL,
		2223	cb => \&db_sync,
1005	});	2224	);
1006		2225
1007	sub db_dirty() {	2226	sub db_dirty() {
1008	$dirty = 1;	2227	$dirty = 1;
1009	$idle->start;	2228	$idle->start;
1010	}	2229	}
1011		2230
1012	sub db_get($;$) {	2231	sub db_get($;$) {
1013	@_ >= 2	2232	@_ >= 2
1014	? $db->{$_[0]}{$_[1]}	2233	? $DB->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })	2234	: ($DB->{$_[0]} ||= { })
1016	}	2235	}
1017		2236
1018	sub db_put($$;$) {	2237	sub db_put($$;$) {
1019	if (@_ >= 3) {	2238	if (@_ >= 3) {
1020	$db->{$_[0]}{$_[1]} = $_[2];	2239	$DB->{$_[0]}{$_[1]} = $_[2];
1021	} else {	2240	} else {
1022	$db->{$_[0]} = $_[1];	2241	$DB->{$_[0]} = $_[1];
1023	}	2242	}
1024	db_dirty;	2243	db_dirty;
1025	}	2244	}
1026		2245
1027	attach_global	2246	cf::global->attach (
1028	prio => 10000,	2247	prio => 10000,
1029	on_cleanup => sub {	2248	on_cleanup => sub {
1030	db_sync;	2249	db_sync;
1031	},	2250	},
1032	;	2251	);
1033	}	2252	}
1034		2253
1035	#############################################################################	2254	#############################################################################
1036	# the server's main()	2255	# the server's main()
1037		2256
…		…
1039	open my $fh, "<:utf8", cf::confdir . "/config"	2258	open my $fh, "<:utf8", cf::confdir . "/config"
1040	or return;	2259	or return;
1041		2260
1042	local $/;	2261	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	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	}
1044	}	2276	}
1045		2277
1046	sub main {	2278	sub main {
		2279	# we must not ever block the main coroutine
		2280	local $Coro::idle = sub {
		2281	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2282	(async {
		2283	Event::one_event;
		2284	})->prio (Coro::PRIO_MAX);
		2285	};
		2286
1047	cfg_load;	2287	cfg_load;
1048	db_load;	2288	db_load;
1049	load_extensions;	2289	load_extensions;
		2290
		2291	$TICK_WATCHER->start;
1050	Event::loop;	2292	Event::loop;
1051	}	2293	}
1052		2294
1053	#############################################################################	2295	#############################################################################
1054	# initialisation	2296	# initialisation and cleanup
1055		2297
		2298	# install some emergency cleanup handlers
		2299	BEGIN {
		2300	for my $signal (qw(INT HUP TERM)) {
		2301	Event->signal (
		2302	reentrant => 0,
		2303	data => WF_AUTOCANCEL,
		2304	signal => $signal,
		2305	prio => 0,
		2306	cb => sub {
		2307	cf::cleanup "SIG$signal";
		2308	},
		2309	);
		2310	}
		2311	}
		2312
		2313	sub emergency_save() {
		2314	my $freeze_guard = cf::freeze_mainloop;
		2315
		2316	warn "enter emergency perl save\n";
		2317
		2318	cf::sync_job {
		2319	# use a peculiar iteration method to avoid tripping on perl
		2320	# refcount bugs in for. also avoids problems with players
		2321	# and maps saved/destroyed asynchronously.
		2322	warn "begin emergency player save\n";
		2323	for my $login (keys %cf::PLAYER) {
		2324	my $pl = $cf::PLAYER{$login} or next;
		2325	$pl->valid or next;
		2326	$pl->save;
		2327	}
		2328	warn "end emergency player save\n";
		2329
		2330	warn "begin emergency map save\n";
		2331	for my $path (keys %cf::MAP) {
		2332	my $map = $cf::MAP{$path} or next;
		2333	$map->valid or next;
		2334	$map->save;
		2335	}
		2336	warn "end emergency map save\n";
		2337	};
		2338
		2339	warn "leave emergency perl save\n";
		2340	}
		2341
1056	sub _perl_reload(&) {	2342	sub reload() {
1057	my ($msg) = @_;	2343	# can/must only be called in main
		2344	if ($Coro::current != $Coro::main) {
		2345	warn "can only reload from main coroutine";
		2346	return;
		2347	}
1058		2348
1059	$msg->("reloading...");	2349	warn "reloading...";
		2350
		2351	warn "cancelling server ticker";
		2352	$TICK_WATCHER->cancel;
		2353
		2354	cf::emergency_save;
1060		2355
1061	eval {	2356	eval {
1062	# cancel all watchers	2357	# if anything goes wrong in here, we should simply crash as we already saved
		2358
		2359	warn "syncing database to disk";
		2360	cf::db_sync;
		2361
		2362	warn "cancelling all WF_AUTOCANCEL watchers";
1063	$_->cancel for Event::all_watchers;	2363	for (Event::all_watchers) {
		2364	$_->cancel if $_->data & WF_AUTOCANCEL;
		2365	}
1064		2366
1065	# unload all extensions	2367	warn "flushing outstanding aio requests";
1066	for (@exts) {	2368	for (;;) {
1067	$msg->("unloading <$_>");	2369	IO::AIO::flush;
1068	unload_extension $_;	2370	Coro::cede;
		2371	last unless IO::AIO::nreqs;
		2372	warn "iterate...";
		2373	}
		2374
		2375	warn "cancelling all extension coros";
		2376	$_->cancel for values %EXT_CORO;
		2377	%EXT_CORO = ();
		2378
		2379	warn "removing commands";
		2380	%COMMAND = ();
		2381
		2382	warn "removing ext commands";
		2383	%EXTCMD = ();
		2384
		2385	warn "unloading/nuking all extensions";
		2386	for my $pkg (@EXTS) {
		2387	warn "... unloading $pkg";
		2388
		2389	if (my $cb = $pkg->can ("unload")) {
		2390	eval {
		2391	$cb->($pkg);
		2392	1
		2393	} or warn "$pkg unloaded, but with errors: $@";
1069	}	2394	}
1070		2395
		2396	warn "... nuking $pkg";
		2397	Symbol::delete_package $pkg;
		2398	}
		2399
1071	# unload all modules loaded from $LIBDIR	2400	warn "unloading all perl modules loaded from $LIBDIR";
1072	while (my ($k, $v) = each %INC) {	2401	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2402	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		2403
1075	$msg->("removing <$k>");	2404	warn "... unloading $k";
1076	delete $INC{$k};	2405	delete $INC{$k};
1077		2406
1078	$k =~ s/\.pm$//;	2407	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	2408	$k =~ s/\//::/g;
1080		2409
…		…
1083	}	2412	}
1084		2413
1085	Symbol::delete_package $k;	2414	Symbol::delete_package $k;
1086	}	2415	}
1087		2416
1088	# sync database to disk
1089	cf::db_sync;
1090
1091	# get rid of safe::, as good as possible	2417	warn "getting rid of safe::, as good as possible";
1092	Symbol::delete_package "safe::$_"	2418	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2419	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		2420
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"	2421	warn "unloading cf.pm \"a bit\"";
1099	delete $INC{"cf.pm"};	2422	delete $INC{"cf.pm"};
1100		2423
1101	# don't, removes xs symbols, too,	2424	# don't, removes xs symbols, too,
1102	# and global variables created in xs	2425	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	2426	#Symbol::delete_package __PACKAGE__;
1104		2427
1105	# reload cf.pm	2428	warn "unload completed, starting to reload now";
		2429
1106	$msg->("reloading cf.pm");	2430	warn "reloading cf.pm";
1107	require cf;	2431	require cf;
		2432	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		2433
1109	# load config and database again	2434	warn "loading config and database again";
1110	cf::cfg_load;	2435	cf::cfg_load;
1111	cf::db_load;	2436	cf::db_load;
1112		2437
1113	# load extensions	2438	warn "loading extensions";
1114	$msg->("load extensions");
1115	cf::load_extensions;	2439	cf::load_extensions;
1116		2440
1117	# reattach attachments to objects	2441	warn "reattaching attachments to objects/players";
1118	$msg->("reattach");
1119	_global_reattach;	2442	_global_reattach;
		2443	warn "reattaching attachments to maps";
		2444	reattach $_ for values %MAP;
		2445
		2446	warn "restarting server ticker";
		2447
		2448	$TICK_WATCHER->start;
1120	};	2449	};
1121	$msg->($@) if $@;
1122		2450
1123	$msg->("reloaded");	2451	if ($@) {
		2452	warn $@;
		2453	warn "error while reloading, exiting.";
		2454	exit 1;
		2455	}
		2456
		2457	warn "reloaded";
1124	};	2458	};
1125		2459
1126	sub perl_reload() {	2460	our $RELOAD_WATCHER; # used only during reload
1127	_perl_reload {
1128	warn $_[0];
1129	print "$_[0]\n";
1130	};
1131	}
1132		2461
1133	register_command "perl-reload", 0, sub {	2462	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	2463	my ($who, $arg) = @_;
1135		2464
1136	if ($who->flag (FLAG_WIZ)) {	2465	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	2466	$who->message ("reloading server.");
1138	warn $_[0];	2467
1139	$who->message ($_[0]);	2468	# doing reload synchronously and two reloads happen back-to-back,
		2469	# coro crashes during coro_state_free->destroy here.
		2470
		2471	$RELOAD_WATCHER ||= Event->timer (
		2472	reentrant => 0,
		2473	after => 0,
		2474	data => WF_AUTOCANCEL,
		2475	cb => sub {
		2476	reload;
		2477	undef $RELOAD_WATCHER;
		2478	},
1140	};	2479	);
1141	}	2480	}
1142	};	2481	};
1143		2482
1144	register "<global>", __PACKAGE__;
1145
1146	unshift @INC, $LIBDIR;	2483	unshift @INC, $LIBDIR;
1147		2484
		2485	my $bug_warning = 0;
		2486
1148	$TICK_WATCHER = Event->timer (	2487	$TICK_WATCHER = Event->timer (
		2488	reentrant => 0,
		2489	parked => 1,
1149	prio => 1,	2490	prio => 0,
1150	at => $NEXT_TICK || 1,	2491	at => $NEXT_TICK || $TICK,
		2492	data => WF_AUTOCANCEL,
1151	cb => sub {	2493	cb => sub {
		2494	if ($Coro::current != $Coro::main) {
		2495	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2496	unless ++$bug_warning > 10;
		2497	return;
		2498	}
		2499
		2500	$NOW = Event::time;
		2501
1152	cf::server_tick; # one server iteration	2502	cf::server_tick; # one server iteration
1153		2503	$RUNTIME += $TICK;
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;	2504	$NEXT_TICK += $TICK;
1156		2505
		2506	$WAIT_FOR_TICK->broadcast;
		2507	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2508
		2509	Event::sweep;
		2510	Coro::cede_notself;
		2511
		2512	# my $AFTER = Event::time;
		2513	# warn $AFTER - $NOW;#d#
		2514
1157	# if we are delayed by four ticks, skip them all	2515	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2516	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1159		2517
1160	$TICK_WATCHER->at ($NEXT_TICK);	2518	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	2519	$TICK_WATCHER->start;
1162	},	2520	},
1163	);	2521	);
1164		2522
		2523	IO::AIO::max_poll_time $TICK * 0.1;
		2524
		2525	undef $Coro::AIO::WATCHER;
		2526	$AIO_POLL_WATCHER = Event->io (
		2527	reentrant => 0,
		2528	fd => IO::AIO::poll_fileno,
		2529	poll => 'r',
		2530	prio => 6,
		2531	data => WF_AUTOCANCEL,
		2532	cb => \&IO::AIO::poll_cb,
		2533	);
		2534
		2535	$WRITE_RUNTIME_WATCHER = Event->timer (
		2536	reentrant => 0,
		2537	data => WF_AUTOCANCEL,
		2538	after => 1,
		2539	interval => 10,
		2540	prio => 6, # keep it lowest so it acts like a watchdog
		2541	cb => Coro::unblock_sub {
		2542	write_runtime
		2543	or warn "ERROR: unable to write runtime file: $!";
		2544	},
		2545	);
		2546
		2547	END { cf::emergency_save }
		2548
1165	1	2549	1
1166		2550

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines