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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.93 by root, Thu Dec 21 22:41:35 2006 UTC vs.
Revision 1.169 by root, Sun Jan 14 01:09:46 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 3.3 ();
		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;
10	use IO::AIO ();	23	use IO::AIO 2.32 ();
11	use YAML::Syck ();	24	use YAML::Syck ();
12	use Time::HiRes;	25	use Time::HiRes;
13	use Event;	26
14	$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
15		30
16	# 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?
17	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
18		33
19	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		35
23	our %COMMAND = ();	36	our %COMMAND = ();
24	our %COMMAND_TIME = ();	37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	40	our %EXTCMD = ();
26		41	our %EXT_CORO = (); # coroutines bound to extensions
27	_init_vars;	42	our %EXT_MAP = (); # pluggable maps
28		43
29	our @EVENT;	44	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	45	our $LIBDIR = datadir . "/ext";
31		46
32	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
34	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
35		53
36	our %CFG;	54	our %CFG;
37		55
38	our $UPTIME; $UPTIME ||= time;	56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		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;
39		87
40	#############################################################################	88	#############################################################################
41		89
42	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
43		91
44	=over 4	92	=over 4
45		93
46	=item $cf::UPTIME	94	=item $cf::UPTIME
47		95
48	The timestamp of the server start (so not actually an uptime).	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.
49		102
50	=item $cf::LIBDIR	103	=item $cf::LIBDIR
51		104
52	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
54		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
55	=item $cf::TICK	112	=item $cf::TICK
56		113
57	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
58		115
59	=item %cf::CFG	116	=item %cf::CFG
60		117
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	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.
63		127
64	=back	128	=back
65		129
66	=cut	130	=cut
67		131
68	BEGIN {	132	BEGIN {
69	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
71	$msg .= "\n"	137	$msg .= "\n"
72	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
73		139
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
76	};	141	};
77	}	142	}
78		143
79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
85		150
86	# 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
87	# within the Safe compartment.	152	# within the Safe compartment.
88	for my $pkg (qw(	153	for my $pkg (qw(
89	cf::global	154	cf::global cf::attachable
90	cf::object cf::object::player	155	cf::object cf::object::player
91	cf::client cf::player	156	cf::client cf::player
92	cf::arch cf::living	157	cf::arch cf::living
93	cf::map cf::party cf::region	158	cf::map cf::party cf::region
94	)) {	159	)) {
…		…
98		163
99	$Event::DIED = sub {	164	$Event::DIED = sub {
100	warn "error in event callback: @_";	165	warn "error in event callback: @_";
101	};	166	};
102		167
103	my %ext_pkg;
104	my @exts;
105	my @hook;
106
107	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
108		169
109	=over 4	170	=over 4
110		171
		172	=item dumpval $ref
		173
111	=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	}
112		194
113	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
114		196
115	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
116		198
…		…
132	sub to_json($) {	214	sub to_json($) {
133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
134	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
135	}	217	}
136		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 + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
		368	}
		369
137	=back	370	=back
138		371
139	=cut	372	=cut
140		373
141	#############################################################################	374	#############################################################################
142		375
143	=head2 ATTACHABLE OBJECTS	376	=head2 ATTACHABLE OBJECTS
144		377
145	You can define and attach attachments to each "attachable" object in	378	Many objects in crossfire are so-called attachable objects. That means you can
146	crossfire+ (objects, players, clients, maps and the special "global"	379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
		381
147	class). In the following description, CLASS can be any of C<global>,	382	In the following description, CLASS can be any of C<global>, C<object>
148	C<object> C<player>, C<client> or C<map>.	383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
149		385
150	=over 4	386	=over 4
151		387
		388	=item $attachable->attach ($attachment, key => $value...)
		389
		390	=item $attachable->detach ($attachment)
		391
		392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
		394
		395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
		397
		398	$obj->attach (minesweeper => width => 10, height => 10);
		399
		400	=item $bool = $attachable->attached ($name)
		401
		402	Checks wether the named attachment is currently attached to the object.
		403
		404	=item cf::CLASS->attach ...
		405
		406	=item cf::CLASS->detach ...
		407
		408	Define an anonymous attachment and attach it to all objects of the given
		409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($pl) = @_;
		418	...
		419	},
		420	);
		421
		422	Example, attach to the jeweler skill:
		423
		424	cf::object->attach (
		425	type => cf::SKILL,
		426	subtype => cf::SK_JEWELER,
		427	on_use_skill => sub {
		428	my ($sk, $ob, $part, $dir, $msg) = @_;
		429	...
		430	},
		431	);
		432
152	=item cf::CLASS::attachment $name, ...	433	=item cf::CLASS::attachment $name, ...
153		434
154	Register an attachment by name through which attachable objects can refer	435	Register an attachment by C<$name> through which attachable objects of the
155	to this attachment.	436	given CLASS can refer to this attachment.
156		437
157	=item $bool = $attachable->attached ($name)	438	Some classes such as crossfire maps and objects can specify attachments
		439	that are attached at load/instantiate time, thus the need for a name.
158		440
159	Checks wether the named attachment is currently attached to the object.
160
161	=item $attachable->attach ($attachment, key => $value...)
162
163	=item $attachable->detach ($attachment)
164
165	Attach/detach a pre-registered attachment either to a specific object
166	(C<$attachable>) or all objects of the given class (if C<$attachable> is a
167	class in a static method call).
168
169	You can attach to global events by using the C<cf::global> class.
170
171	These method calls expect any number of the following handler/hook	441	These calls expect any number of the following handler/hook descriptions:
172	descriptions:
173		442
174	=over 4	443	=over 4
175		444
176	=item prio => $number	445	=item prio => $number
177		446
…		…
203	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
204	object/class are recognised.	473	object/class are recognised.
205		474
206	=back	475	=back
207		476
		477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
		479
		480	cf::object::attachment sockpuppet =>
		481	on_skill_attack => sub {
		482	my ($self, $victim) = @_;
		483	...
		484	}
		485	}
		486
		487	=item $attachable->valid
		488
		489	Just because you have a perl object does not mean that the corresponding
		490	C-level object still exists. If you try to access an object that has no
		491	valid C counterpart anymore you get an exception at runtime. This method
		492	can be used to test for existence of the C object part without causing an
		493	exception.
		494
208	=cut	495	=cut
209		496
210	# the following variables are defined in .xs and must not be re-created	497	# the following variables are defined in .xs and must not be re-created
211	our @CB_GLOBAL = (); # registry for all global events	498	our @CB_GLOBAL = (); # registry for all global events
		499	our @CB_ATTACHABLE = (); # registry for all attachables
212	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
213	our @CB_PLAYER = ();	501	our @CB_PLAYER = ();
214	our @CB_CLIENT = ();	502	our @CB_CLIENT = ();
215	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
216	our @CB_MAP = ();	504	our @CB_MAP = ();
217		505
218	my %attachment;	506	my %attachment;
219		507
220	sub _attach_cb($$$$) {	508	sub _attach_cb($$$$) {
221	my ($registry, $event, $prio, $cb) = @_;	509	my ($registry, $event, $prio, $cb) = @_;
…		…
226		514
227	@{$registry->[$event]} = sort	515	@{$registry->[$event]} = sort
228	{ $a->[0] cmp $b->[0] }	516	{ $a->[0] cmp $b->[0] }
229	@{$registry->[$event] || []}, $cb;	517	@{$registry->[$event] || []}, $cb;
230	}	518	}
		519
		520	# hack
		521	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
231		522
232	# attach handles attaching event callbacks	523	# attach handles attaching event callbacks
233	# the only thing the caller has to do is pass the correct	524	# the only thing the caller has to do is pass the correct
234	# registry (== where the callback attaches to).	525	# registry (== where the callback attaches to).
235	sub _attach {	526	sub _attach {
…		…
237		528
238	my $object_type;	529	my $object_type;
239	my $prio = 0;	530	my $prio = 0;
240	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	531	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
241		532
		533	#TODO: get rid of this hack
		534	if ($attachable_klass{$klass}) {
		535	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		536	}
		537
242	while (@arg) {	538	while (@arg) {
243	my $type = shift @arg;	539	my $type = shift @arg;
244		540
245	if ($type eq "prio") {	541	if ($type eq "prio") {
246	$prio = shift @arg;	542	$prio = shift @arg;
…		…
321	my ($obj, $name) = @_;	617	my ($obj, $name) = @_;
322		618
323	exists $obj->{_attachment}{$name}	619	exists $obj->{_attachment}{$name}
324	}	620	}
325		621
326	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	622	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
327	eval "#line " . __LINE__ . " 'cf.pm'	623	eval "#line " . __LINE__ . " 'cf.pm'
328	sub cf::\L$klass\E::_attach_registry {	624	sub cf::\L$klass\E::_attach_registry {
329	(\\\@CB_$klass, KLASS_$klass)	625	(\\\@CB_$klass, KLASS_$klass)
330	}	626	}
331		627
…		…
367	}	663	}
368		664
369	0	665	0
370	}	666	}
371		667
372	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	668	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
373		669
374	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
375
376	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
377
378	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)	670	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
379		671
380	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
381
382	Generate a global/object/player/map-specific event with the given arguments.	672	Generate an object-specific event with the given arguments.
383		673
384	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be	674	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
385	removed in future versions), and there is no public API to access override	675	removed in future versions), and there is no public API to access override
386	results (if you must, access C<@cf::invoke_results> directly).	676	results (if you must, access C<@cf::invoke_results> directly).
387		677
388	=back	678	=back
389		679
390	=cut	680	=cut
391		681
392	#############################################################################	682	#############################################################################
393
394	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
395
396	Attachable objects includes objects, players, clients and maps.
397
398	=over 4
399
400	=item $object->valid
401
402	Just because you have a perl object does not mean that the corresponding
403	C-level object still exists. If you try to access an object that has no
404	valid C counterpart anymore you get an exception at runtime. This method
405	can be used to test for existence of the C object part without causing an
406	exception.
407
408	=back
409
410	=cut
411
412	#############################################################################
413	# object support	683	# object support
414		684
415	sub instantiate {
416	my ($obj, $data) = @_;
417
418	$data = from_json $data;
419
420	for (@$data) {
421	my ($name, $args) = @$_;
422
423	$obj->attach ($name, %{$args || {} });
424	}
425	}
426
427	# basically do the same as instantiate, without calling instantiate
428	sub reattach {	685	sub reattach {
		686	# basically do the same as instantiate, without calling instantiate
429	my ($obj) = @_;	687	my ($obj) = @_;
		688
		689	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		690
430	my $registry = $obj->registry;	691	my $registry = $obj->registry;
431		692
432	@$registry = ();	693	@$registry = ();
433		694
434	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	695	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
443	warn "object uses attachment '$name' that is not available, postponing.\n";	704	warn "object uses attachment '$name' that is not available, postponing.\n";
444	}	705	}
445	}	706	}
446	}	707	}
447		708
448	sub object_freezer_save {	709	cf::attachable->attach (
449	my ($filename, $rdata, $objs) = @_;
450
451	if (length $$rdata) {
452	warn sprintf "saving %s (%d,%d)\n",
453	$filename, length $$rdata, scalar @$objs;
454
455	if (open my $fh, ">:raw", "$filename~") {
456	chmod SAVE_MODE, $fh;
457	syswrite $fh, $$rdata;
458	close $fh;
459
460	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
461	chmod SAVE_MODE, $fh;
462	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
463	close $fh;
464	rename "$filename.pst~", "$filename.pst";
465	} else {
466	unlink "$filename.pst";
467	}
468
469	rename "$filename~", $filename;
470	} else {
471	warn "FATAL: $filename~: $!\n";
472	}
473	} else {
474	unlink $filename;
475	unlink "$filename.pst";
476	}
477	}
478
479	sub object_freezer_as_string {
480	my ($rdata, $objs) = @_;
481
482	use Data::Dumper;
483
484	$$rdata . Dumper $objs
485	}
486
487	sub object_thawer_load {
488	my ($filename) = @_;
489
490	local $/;
491
492	my $av;
493
494	#TODO: use sysread etc.
495	if (open my $data, "<:raw:perlio", $filename) {
496	$data = <$data>;
497	if (open my $pst, "<:raw:perlio", "$filename.pst") {
498	$av = eval { (Storable::thaw <$pst>)->{objs} };
499	}
500	return ($data, $av);
501	}
502
503	()
504	}
505
506	cf::object->attach (
507	prio => -1000000,	710	prio => -1000000,
		711	on_instantiate => sub {
		712	my ($obj, $data) = @_;
		713
		714	$data = from_json $data;
		715
		716	for (@$data) {
		717	my ($name, $args) = @$_;
		718
		719	$obj->attach ($name, %{$args || {} });
		720	}
		721	},
		722	on_reattach => \&reattach,
508	on_clone => sub {	723	on_clone => sub {
509	my ($src, $dst) = @_;	724	my ($src, $dst) = @_;
510		725
511	@{$dst->registry} = @{$src->registry};	726	@{$dst->registry} = @{$src->registry};
512		727
…		…
515	%{$dst->{_attachment}} = %{$src->{_attachment}}	730	%{$dst->{_attachment}} = %{$src->{_attachment}}
516	if exists $src->{_attachment};	731	if exists $src->{_attachment};
517	},	732	},
518	);	733	);
519		734
		735	sub object_freezer_save {
		736	my ($filename, $rdata, $objs) = @_;
		737
		738	sync_job {
		739	if (length $$rdata) {
		740	warn sprintf "saving %s (%d,%d)\n",
		741	$filename, length $$rdata, scalar @$objs;
		742
		743	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		744	chmod SAVE_MODE, $fh;
		745	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		746	aio_fsync $fh;
		747	close $fh;
		748
		749	if (@$objs) {
		750	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		751	chmod SAVE_MODE, $fh;
		752	my $data = Storable::nfreeze { version => 1, objs => $objs };
		753	aio_write $fh, 0, (length $data), $data, 0;
		754	aio_fsync $fh;
		755	close $fh;
		756	aio_rename "$filename.pst~", "$filename.pst";
		757	}
		758	} else {
		759	aio_unlink "$filename.pst";
		760	}
		761
		762	aio_rename "$filename~", $filename;
		763	} else {
		764	warn "FATAL: $filename~: $!\n";
		765	}
		766	} else {
		767	aio_unlink $filename;
		768	aio_unlink "$filename.pst";
		769	}
		770	}
		771	}
		772
		773	sub object_freezer_as_string {
		774	my ($rdata, $objs) = @_;
		775
		776	use Data::Dumper;
		777
		778	$$rdata . Dumper $objs
		779	}
		780
		781	sub object_thawer_load {
		782	my ($filename) = @_;
		783
		784	my ($data, $av);
		785
		786	(aio_load $filename, $data) >= 0
		787	or return;
		788
		789	unless (aio_stat "$filename.pst") {
		790	(aio_load "$filename.pst", $av) >= 0
		791	or return;
		792	$av = eval { (Storable::thaw $av)->{objs} };
		793	}
		794
		795	warn sprintf "loading %s (%d)\n",
		796	$filename, length $data, scalar @{$av || []};#d#
		797	return ($data, $av);
		798	}
		799
520	#############################################################################	800	#############################################################################
521	# command handling &c	801	# command handling &c
522		802
523	=item cf::register_command $name => \&callback($ob,$args);	803	=item cf::register_command $name => \&callback($ob,$args);
524		804
…		…
546	=cut	826	=cut
547		827
548	sub register_extcmd {	828	sub register_extcmd {
549	my ($name, $cb) = @_;	829	my ($name, $cb) = @_;
550		830
551	my $caller = caller;
552	#warn "registering extcmd '$name' to '$caller'";
553
554	$EXTCMD{$name} = [$cb, $caller];	831	$EXTCMD{$name} = $cb;
555	}	832	}
556		833
557	cf::player->attach (	834	cf::player->attach (
558	on_command => sub {	835	on_command => sub {
559	my ($pl, $name, $params) = @_;	836	my ($pl, $name, $params) = @_;
…		…
572		849
573	my $msg = eval { from_json $buf };	850	my $msg = eval { from_json $buf };
574		851
575	if (ref $msg) {	852	if (ref $msg) {
576	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	853	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
577	if (my %reply = $cb->[0]->($pl, $msg)) {	854	if (my %reply = $cb->($pl, $msg)) {
578	$pl->ext_reply ($msg->{msgid}, %reply);	855	$pl->ext_reply ($msg->{msgid}, %reply);
579	}	856	}
580	}	857	}
581	} else {	858	} else {
582	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	859	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
584		861
585	cf::override;	862	cf::override;
586	},	863	},
587	);	864	);
588		865
589	sub register {
590	my ($base, $pkg) = @_;
591
592	#TODO
593	}
594
595	sub load_extension {	866	sub load_extension {
596	my ($path) = @_;	867	my ($path) = @_;
597		868
598	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	869	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
599	my $base = $1;	870	my $base = $1;
600	my $pkg = $1;	871	my $pkg = $1;
601	$pkg =~ s/[^[:word:]]/_/g;	872	$pkg =~ s/[^[:word:]]/_/g;
602	$pkg = "ext::$pkg";	873	$pkg = "ext::$pkg";
603		874
604	warn "loading '$path' into '$pkg'\n";	875	warn "... loading '$path' into '$pkg'\n";
605		876
606	open my $fh, "<:utf8", $path	877	open my $fh, "<:utf8", $path
607	or die "$path: $!";	878	or die "$path: $!";
608		879
609	my $source =	880	my $source =
610	"package $pkg; use strict; use utf8;\n"	881	"package $pkg; use strict; use utf8;\n"
611	. "#line 1 \"$path\"\n{\n"	882	. "#line 1 \"$path\"\n{\n"
612	. (do { local $/; <$fh> })	883	. (do { local $/; <$fh> })
613	. "\n};\n1";	884	. "\n};\n1";
614		885
615	eval $source	886	unless (eval $source) {
616	or die $@ ? "$path: $@\n"	887	my $msg = $@ ? "$path: $@\n"
617	: "extension disabled.\n";	888	: "extension disabled.\n";
618		889	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
619	push @exts, $pkg;	890	warn $@;
620	$ext_pkg{$base} = $pkg;	891	warn "mandatory extension failed to load, exiting.\n";
621		892	exit 1;
622	# no strict 'refs';	893	}
623	# @{"$pkg\::ISA"} = ext::;	894	die $@;
624
625	register $base, $pkg;
626	}
627
628	sub unload_extension {
629	my ($pkg) = @_;
630
631	warn "removing extension $pkg\n";
632
633	# remove hooks
634	#TODO
635	# for my $idx (0 .. $#PLUGIN_EVENT) {
636	# delete $hook[$idx]{$pkg};
637	# }	895	}
638		896
639	# remove commands	897	push @EXTS, $pkg;
640	for my $name (keys %COMMAND) {
641	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
642
643	if (@cb) {
644	$COMMAND{$name} = \@cb;
645	} else {
646	delete $COMMAND{$name};
647	}
648	}
649
650	# remove extcmds
651	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
652	delete $EXTCMD{$name};
653	}
654
655	if (my $cb = $pkg->can ("unload")) {
656	eval {
657	$cb->($pkg);
658	1
659	} or warn "$pkg unloaded, but with errors: $@";
660	}
661
662	Symbol::delete_package $pkg;
663	}	898	}
664		899
665	sub load_extensions {	900	sub load_extensions {
666	for my $ext (<$LIBDIR/*.ext>) {	901	for my $ext (<$LIBDIR/*.ext>) {
667	next unless -r $ext;	902	next unless -r $ext;
…		…
671	} or warn "$ext not loaded: $@";	906	} or warn "$ext not loaded: $@";
672	}	907	}
673	}	908	}
674		909
675	#############################################################################	910	#############################################################################
676	# load/save/clean perl data associated with a map
677		911
678	*cf::mapsupport::on_clean = sub {	912	=head2 CORE EXTENSIONS
		913
		914	Functions and methods that extend core crossfire objects.
		915
		916	=cut
		917
		918	package cf::player;
		919
		920	use Coro::AIO;
		921
		922	=head3 cf::player
		923
		924	=over 4
		925
		926	=item cf::player::find $login
		927
		928	Returns the given player object, loading it if necessary (might block).
		929
		930	=cut
		931
		932	sub playerdir($) {
		933	cf::localdir
		934	. "/"
		935	. cf::playerdir
		936	. "/"
		937	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		938	}
		939
		940	sub path($) {
		941	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		942
		943	(playerdir $login) . "/$login.pl"
		944	}
		945
		946	sub find_active($) {
		947	$cf::PLAYER{$_[0]}
		948	and $cf::PLAYER{$_[0]}->active
		949	and $cf::PLAYER{$_[0]}
		950	}
		951
		952	sub exists($) {
		953	my ($login) = @_;
		954
		955	$cf::PLAYER{$login}
		956	or cf::sync_job { !aio_stat $login }
		957	}
		958
		959	sub find($) {
		960	return $cf::PLAYER{$_[0]} || do {
		961	my $login = $_[0];
		962
		963	my $guard = cf::lock_acquire "user_find:$login";
		964
		965	$cf::PLAYER{$_[0]} || do {
		966	my $pl = load_pl path $login
		967	or return;
		968	$cf::PLAYER{$login} = $pl
		969	}
		970	}
		971	}
		972
		973	sub save($) {
		974	my ($pl) = @_;
		975
		976	return if $pl->{deny_save};
		977
		978	my $path = path $pl;
		979	my $guard = cf::lock_acquire "user_save:$path";
		980
		981	return if $pl->{deny_save};
		982
		983	aio_mkdir playerdir $pl, 0770;
		984	$pl->{last_save} = $cf::RUNTIME;
		985
		986	$pl->save_pl ($path);
		987	Coro::cede;
		988	}
		989
		990	sub new($) {
		991	my ($login) = @_;
		992
		993	my $self = create;
		994
		995	$self->ob->name ($login);
		996	$self->{deny_save} = 1;
		997
		998	$cf::PLAYER{$login} = $self;
		999
		1000	$self
		1001	}
		1002
		1003	=item $pl->quit_character
		1004
		1005	Nukes the player without looking back. If logged in, the connection will
		1006	be destroyed. May block for a long time.
		1007
		1008	=cut
		1009
		1010	sub quit_character {
		1011	my ($pl) = @_;
		1012
		1013	$pl->{deny_save} = 1;
		1014	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1015
		1016	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1017	$pl->deactivate;
		1018	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1019	$pl->ns->destroy if $pl->ns;
		1020
		1021	my $path = playerdir $pl;
		1022	my $temp = "$path~$cf::RUNTIME~deleting~";
		1023	aio_rename $path, $temp;
		1024	delete $cf::PLAYER{$pl->ob->name};
		1025	$pl->destroy;
		1026	IO::AIO::aio_rmtree $temp;
		1027	}
		1028
		1029	=item cf::player::list_logins
		1030
		1031	Returns am arrayref of all valid playernames in the system, can take a
		1032	while and may block, so not sync_job-capable, ever.
		1033
		1034	=cut
		1035
		1036	sub list_logins {
		1037	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1038	or return [];
		1039
		1040	my @logins;
		1041
		1042	for my $login (@$dirs) {
		1043	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1044	aio_read $fh, 0, 512, my $buf, 0 or next;
		1045	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1046
		1047	utf8::decode $login;
		1048	push @logins, $login;
		1049	}
		1050
		1051	\@logins
		1052	}
		1053
		1054	=item $player->maps
		1055
		1056	Returns an arrayref of map paths that are private for this
		1057	player. May block.
		1058
		1059	=cut
		1060
		1061	sub maps($) {
		1062	my ($pl) = @_;
		1063
		1064	my $files = aio_readdir playerdir $pl
		1065	or return;
		1066
		1067	my @paths;
		1068
		1069	for (@$files) {
		1070	utf8::decode $_;
		1071	next if /\.(?:pl|pst)$/;
		1072	next unless /^$PATH_SEP/o;
		1073
		1074	s/\.map$//;
		1075	push @paths, "~" . $pl->ob->name . "/" . $_;
		1076	}
		1077
		1078	\@paths
		1079	}
		1080
		1081	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1082
		1083	Sends an ext reply to the player.
		1084
		1085	=cut
		1086
		1087	sub ext_reply($$$%) {
		1088	my ($self, $id, %msg) = @_;
		1089
		1090	$msg{msgid} = $id;
		1091
		1092	$self->send ("ext " . cf::to_json \%msg);
		1093	}
		1094
		1095	package cf;
		1096
		1097	=back
		1098
		1099
		1100	=head3 cf::map
		1101
		1102	=over 4
		1103
		1104	=cut
		1105
		1106	package cf::map;
		1107
		1108	use Fcntl;
		1109	use Coro::AIO;
		1110
		1111	use overload
		1112	'""' => \&as_string;
		1113
		1114	our $MAX_RESET = 3600;
		1115	our $DEFAULT_RESET = 3000;
		1116
		1117	sub generate_random_map {
		1118	my ($self, $rmp) = @_;
		1119
		1120	# mit "rum" bekleckern, nicht
		1121	$self->_create_random_map (
		1122	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1123	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1124	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1125	$rmp->{exit_on_final_map},
		1126	$rmp->{xsize}, $rmp->{ysize},
		1127	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1128	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1129	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1130	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1131	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1132	(cf::region::find $rmp->{region}), $rmp->{custom}
		1133	)
		1134	}
		1135
		1136	sub register {
		1137	my (undef, $regex) = @_;
		1138	my $pkg = caller;
		1139
		1140	no strict;
		1141	push @{"$pkg\::ISA"}, __PACKAGE__;
		1142
		1143	$EXT_MAP{$pkg} = qr<$regex>;
		1144	}
		1145
		1146	# also paths starting with '/'
		1147	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1148
		1149	sub normalise {
		1150	my ($path, $base) = @_;
		1151
		1152	# map plan:
		1153	#
		1154	# /! non-realised random map exit (special hack!)
		1155	# {... are special paths that are not being touched
		1156	# ?xxx/... are special absolute paths
		1157	# ?random/... random maps
		1158	# /... normal maps
		1159	# ~user/... per-player map of a specific user
		1160
		1161	$path =~ s/$PATH_SEP/\//go;
		1162
		1163	# treat it as relative path if it starts with
		1164	# something that looks reasonable
		1165	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1166	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1167
		1168	$base =~ s{[^/]+/?$}{};
		1169	$path = "$base/$path";
		1170	}
		1171
		1172	for ($path) {
		1173	redo if s{//}{/};
		1174	redo if s{/\.?/}{/};
		1175	redo if s{/[^/]+/\.\./}{/};
		1176	}
		1177
		1178	$path
		1179	}
		1180
		1181	sub new_from_path {
		1182	my (undef, $path, $base) = @_;
		1183
		1184	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1185
		1186	$path = normalise $path, $base;
		1187
		1188	for my $pkg (keys %EXT_MAP) {
		1189	if ($path =~ $EXT_MAP{$pkg}) {
		1190	my $self = bless cf::map::new, $pkg;
		1191	$self->{path} = $path; $self->path ($path);
		1192	$self->init; # pass $1 etc.
		1193	return $self;
		1194	}
		1195	}
		1196
		1197	Carp::carp "unable to resolve path '$path'.";
		1198	()
		1199	}
		1200
		1201	sub init {
		1202	my ($self) = @_;
		1203
		1204	$self
		1205	}
		1206
		1207	sub as_string {
		1208	my ($self) = @_;
		1209
		1210	"$self->{path}"
		1211	}
		1212
		1213	# the displayed name, this is a one way mapping
		1214	sub visible_name {
		1215	&as_string
		1216	}
		1217
		1218	# the original (read-only) location
		1219	sub load_path {
		1220	my ($self) = @_;
		1221
		1222	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1223	}
		1224
		1225	# the temporary/swap location
		1226	sub save_path {
		1227	my ($self) = @_;
		1228
		1229	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1230	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1231	}
		1232
		1233	# the unique path, undef == no special unique path
		1234	sub uniq_path {
		1235	my ($self) = @_;
		1236
		1237	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1238	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1239	}
		1240
		1241	# and all this just because we cannot iterate over
		1242	# all maps in C++...
		1243	sub change_all_map_light {
		1244	my ($change) = @_;
		1245
		1246	$_->change_map_light ($change)
		1247	for grep $_->outdoor, values %cf::MAP;
		1248	}
		1249
		1250	sub unlink_save {
		1251	my ($self) = @_;
		1252
		1253	utf8::encode (my $save = $self->save_path);
		1254	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink $save;
		1255	IO::AIO::aioreq_pri 4; IO::AIO::aio_unlink "$save.pst";
		1256	}
		1257
		1258	sub load_header_from($) {
		1259	my ($self, $path) = @_;
		1260
		1261	utf8::encode $path;
		1262	aio_open $path, O_RDONLY, 0
		1263	or return;
		1264
		1265	$self->_load_header ($path)
		1266	or return;
		1267
		1268	$self->{load_path} = $path;
		1269
		1270	1
		1271	}
		1272
		1273	sub load_orig {
		1274	my ($self) = @_;
		1275
		1276	$self->load_header_from ($self->load_path)
		1277	}
		1278
		1279	sub load_temp {
		1280	my ($self) = @_;
		1281
		1282	$self->load_header_from ($self->save_path)
		1283	}
		1284
		1285	sub load_header {
		1286	my ($self) = @_;
		1287
		1288	if ($self->load_temp) {
		1289	$self->last_access ((delete $self->{last_access})
		1290	|| $cf::RUNTIME); #d#
		1291	# safety
		1292	$self->{instantiate_time} = $cf::RUNTIME
		1293	if $self->{instantiate_time} > $cf::RUNTIME;
		1294	} else {
		1295	$self->load_orig
		1296	or return;
		1297
		1298	$self->{load_original} = 1;
		1299	$self->{instantiate_time} = $cf::RUNTIME;
		1300	$self->last_access ($cf::RUNTIME);
		1301	$self->instantiate;
		1302	}
		1303
		1304	1
		1305	}
		1306
		1307	sub find;
		1308	sub find {
		1309	my ($path, $origin) = @_;
		1310
		1311	$path = normalise $path, $origin && $origin->path;
		1312
		1313	cf::lock_wait "map_find:$path";
		1314
		1315	$cf::MAP{$path} || do {
		1316	my $guard = cf::lock_acquire "map_find:$path";
		1317	my $map = new_from_path cf::map $path
		1318	or return;
		1319
		1320	$map->{last_save} = $cf::RUNTIME;
		1321
		1322	$map->load_header
		1323	or return;
		1324
		1325	if ($map->should_reset) {
		1326	$map->reset;
		1327	undef $guard;
		1328	$map = find $path
		1329	or return;
		1330	}
		1331
		1332	$cf::MAP{$path} = $map
		1333	}
		1334	}
		1335
		1336	sub load {
		1337	my ($self) = @_;
		1338
		1339	my $path = $self->{path};
		1340	my $guard = cf::lock_acquire "map_load:$path";
		1341
		1342	return if $self->in_memory != cf::MAP_SWAPPED;
		1343
		1344	$self->in_memory (cf::MAP_LOADING);
		1345
		1346	$self->alloc;
		1347	$self->_load_objects ($self->{load_path}, 1)
		1348	or return;
		1349
		1350	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1351	if delete $self->{load_original};
		1352
		1353	if (my $uniq = $self->uniq_path) {
		1354	utf8::encode $uniq;
		1355	if (aio_open $uniq, O_RDONLY, 0) {
		1356	$self->clear_unique_items;
		1357	$self->_load_objects ($uniq, 0);
		1358	}
		1359	}
		1360
		1361	Coro::cede;
		1362
		1363	# now do the right thing for maps
		1364	$self->link_multipart_objects;
		1365
		1366	unless ($self->{deny_activate}) {
		1367	$self->decay_objects;
		1368	$self->fix_auto_apply;
		1369	$self->update_buttons;
		1370	Coro::cede;
		1371	$self->set_darkness_map;
		1372	$self->difficulty ($self->estimate_difficulty)
		1373	unless $self->difficulty;
		1374	Coro::cede;
		1375	$self->activate;
		1376	}
		1377
		1378	$self->in_memory (cf::MAP_IN_MEMORY);
		1379	}
		1380
		1381	sub customise_for {
		1382	my ($self, $ob) = @_;
		1383
		1384	return find "~" . $ob->name . "/" . $self->{path}
		1385	if $self->per_player;
		1386
		1387	$self
		1388	}
		1389
		1390	# find and load all maps in the 3x3 area around a map
		1391	sub load_diag {
679	my ($map) = @_;	1392	my ($map) = @_;
680		1393
681	my $path = $map->tmpname;	1394	my @diag; # diagonal neighbours
682	defined $path or return;
683		1395
684	unlink "$path.pst";	1396	for (0 .. 3) {
		1397	my $neigh = $map->tile_path ($_)
		1398	or next;
		1399	$neigh = find $neigh, $map
		1400	or next;
		1401	$neigh->load;
		1402
		1403	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1404	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1405	}
		1406
		1407	for (@diag) {
		1408	my $neigh = find @$_
		1409	or next;
		1410	$neigh->load;
		1411	}
		1412	}
		1413
		1414	sub find_sync {
		1415	my ($path, $origin) = @_;
		1416
		1417	cf::sync_job { find $path, $origin }
		1418	}
		1419
		1420	sub do_load_sync {
		1421	my ($map) = @_;
		1422
		1423	cf::sync_job { $map->load };
		1424	}
		1425
		1426	our %MAP_PREFETCH;
		1427	our $MAP_PREFETCHER = Coro::async {
		1428	while () {
		1429	for my $path (keys %MAP_PREFETCH) {
		1430	my $map = find $path
		1431	or next;
		1432	$map->load;
		1433
		1434	delete $MAP_PREFETCH{$path};
		1435	}
		1436	Coro::schedule;
		1437	}
685	};	1438	};
686		1439
687	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1440	sub find_async {
		1441	my ($path, $origin) = @_;
688		1442
689	#############################################################################	1443	$path = normalise $path, $origin && $origin->{path};
690	# load/save perl data associated with player->ob objects
691		1444
692	sub all_objects(@) {	1445	if (my $map = $cf::MAP{$path}) {
693	@_, map all_objects ($_->inv), @_	1446	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
694	}
695
696	# TODO: compatibility cruft, remove when no longer needed
697	cf::player->attach (
698	on_load => sub {
699	my ($pl, $path) = @_;
700
701	for my $o (all_objects $pl->ob) {
702	if (my $value = $o->get_ob_key_value ("_perl_data")) {
703	$o->set_ob_key_value ("_perl_data");
704
705	%$o = %{ Storable::thaw pack "H*", $value };
706	}
707	}
708	},	1447	}
709	);
710		1448
711	#############################################################################	1449	$MAP_PREFETCH{$path} = 0;
		1450	$MAP_PREFETCHER->ready;
712		1451
713	=head2 CORE EXTENSIONS	1452	()
		1453	}
714		1454
715	Functions and methods that extend core crossfire objects.	1455	sub save {
		1456	my ($self) = @_;
		1457
		1458	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1459
		1460	$self->{last_save} = $cf::RUNTIME;
		1461
		1462	return unless $self->dirty;
		1463
		1464	my $save = $self->save_path; utf8::encode $save;
		1465	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1466
		1467	$self->{load_path} = $save;
		1468
		1469	return if $self->{deny_save};
		1470
		1471	local $self->{last_access} = $self->last_access;#d#
		1472
		1473	cf::async {
		1474	$_->contr->save for $self->players;
		1475	};
		1476
		1477	if ($uniq) {
		1478	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1479	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1480	} else {
		1481	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1482	}
		1483	}
		1484
		1485	sub swap_out {
		1486	my ($self) = @_;
		1487
		1488	# save first because save cedes
		1489	$self->save;
		1490
		1491	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1492
		1493	return if $self->players;
		1494	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1495	return if $self->{deny_save};
		1496
		1497	$self->clear;
		1498	$self->in_memory (cf::MAP_SWAPPED);
		1499	}
		1500
		1501	sub reset_at {
		1502	my ($self) = @_;
		1503
		1504	# TODO: safety, remove and allow resettable per-player maps
		1505	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1506	return 1e99 if $self->{deny_reset};
		1507
		1508	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1509	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1510
		1511	$time + $to
		1512	}
		1513
		1514	sub should_reset {
		1515	my ($self) = @_;
		1516
		1517	$self->reset_at <= $cf::RUNTIME
		1518	}
		1519
		1520	sub rename {
		1521	my ($self, $new_path) = @_;
		1522
		1523	normalise $new_path;
		1524
		1525	$self->unlink_save;
		1526
		1527	delete $cf::MAP{$self->path};
		1528	$self->{path} = $new_path; $self->path ($self->{path});
		1529	$cf::MAP{$self->path} = $self;
		1530
		1531	$self->save;
		1532	}
		1533
		1534	sub reset {
		1535	my ($self) = @_;
		1536
		1537	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1538
		1539	return if $self->players;
		1540	return if $self->isa ("ext::map_per_player");#d#
		1541
		1542	warn "resetting map ", $self->path;#d#
		1543
		1544	delete $cf::MAP{$self->path};
		1545
		1546	$self->in_memory (cf::MAP_SWAPPED);
		1547	$self->clear;
		1548
		1549	$_->clear_links_to ($self) for values %cf::MAP;
		1550
		1551	$self->unlink_save;
		1552	$self->destroy;
		1553	}
		1554
		1555	my $nuke_counter = "aaaa";
		1556
		1557	sub nuke {
		1558	my ($self) = @_;
		1559
		1560	$self->{deny_save} = 1;
		1561	$self->reset_timeout (1);
		1562	$self->rename ("{nuke}/" . ($nuke_counter++));
		1563	$self->reset; # polite request, might not happen
		1564	}
		1565
		1566	=item cf::map::unique_maps
		1567
		1568	Returns an arrayref of paths of all shared maps that have
		1569	instantiated unique items. May block.
		1570
		1571	=cut
		1572
		1573	sub unique_maps() {
		1574	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1575	or return;
		1576
		1577	my @paths;
		1578
		1579	for (@$files) {
		1580	utf8::decode $_;
		1581	next if /\.pst$/;
		1582	next unless /^$PATH_SEP/o;
		1583
		1584	s/\.map$//;
		1585	push @paths, $_;
		1586	}
		1587
		1588	\@paths
		1589	}
		1590
		1591	package cf;
		1592
		1593	=back
		1594
		1595	=head3 cf::object
		1596
		1597	=cut
		1598
		1599	package cf::object;
716		1600
717	=over 4	1601	=over 4
718		1602
719	=item cf::player::exists $login	1603	=item $ob->inv_recursive
720		1604
721	Returns true when the given account exists.	1605	Returns the inventory of the object _and_ their inventories, recursively.
722		1606
723	=cut	1607	=cut
724		1608
725	sub cf::player::exists($) {	1609	sub inv_recursive_;
726	cf::player::find $_[0]	1610	sub inv_recursive_ {
727	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1611	map { $_, inv_recursive_ $_->inv } @_
728	}	1612	}
		1613
		1614	sub inv_recursive {
		1615	inv_recursive_ inv $_[0]
		1616	}
		1617
		1618	package cf;
		1619
		1620	=back
		1621
		1622	=head3 cf::object::player
		1623
		1624	=over 4
729		1625
730	=item $player_object->reply ($npc, $msg[, $flags])	1626	=item $player_object->reply ($npc, $msg[, $flags])
731		1627
732	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1628	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
733	can be C<undef>. Does the right thing when the player is currently in a	1629	can be C<undef>. Does the right thing when the player is currently in a
…		…
735		1631
736	=cut	1632	=cut
737		1633
738	# rough implementation of a future "reply" method that works	1634	# rough implementation of a future "reply" method that works
739	# with dialog boxes.	1635	# with dialog boxes.
		1636	#TODO: the first argument must go, split into a $npc->reply_to ( method
740	sub cf::object::player::reply($$$;$) {	1637	sub cf::object::player::reply($$$;$) {
741	my ($self, $npc, $msg, $flags) = @_;	1638	my ($self, $npc, $msg, $flags) = @_;
742		1639
743	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1640	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
744		1641
…		…
748	$msg = $npc->name . " says: $msg" if $npc;	1645	$msg = $npc->name . " says: $msg" if $npc;
749	$self->message ($msg, $flags);	1646	$self->message ($msg, $flags);
750	}	1647	}
751	}	1648	}
752		1649
753	=item $player->ext_reply ($msgid, $msgtype, %msg)
754
755	Sends an ext reply to the player.
756
757	=cut
758
759	sub cf::player::ext_reply($$$%) {
760	my ($self, $id, %msg) = @_;
761
762	$msg{msgid} = $id;
763
764	$self->send ("ext " . to_json \%msg);
765	}
766
767	=item $player_object->may ("access")	1650	=item $player_object->may ("access")
768		1651
769	Returns wether the given player is authorized to access resource "access"	1652	Returns wether the given player is authorized to access resource "access"
770	(e.g. "command_wizcast").	1653	(e.g. "command_wizcast").
771		1654
…		…
778	(ref $cf::CFG{"may_$access"}	1661	(ref $cf::CFG{"may_$access"}
779	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1662	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
780	: $cf::CFG{"may_$access"})	1663	: $cf::CFG{"may_$access"})
781	}	1664	}
782		1665
783	=cut	1666	=item $player_object->enter_link
784		1667
785	#############################################################################	1668	Freezes the player and moves him/her to a special map (C<{link}>).
		1669
		1670	The player should be reasonably safe there for short amounts of time. You
		1671	I<MUST> call C<leave_link> as soon as possible, though.
		1672
		1673	Will never block.
		1674
		1675	=item $player_object->leave_link ($map, $x, $y)
		1676
		1677	Moves the player out of the special C<{link}> map onto the specified
		1678	map. If the map is not valid (or omitted), the player will be moved back
		1679	to the location he/she was before the call to C<enter_link>, or, if that
		1680	fails, to the emergency map position.
		1681
		1682	Might block.
		1683
		1684	=cut
		1685
		1686	sub link_map {
		1687	unless ($LINK_MAP) {
		1688	$LINK_MAP = cf::map::find "{link}"
		1689	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1690	$LINK_MAP->load;
		1691	}
		1692
		1693	$LINK_MAP
		1694	}
		1695
		1696	sub cf::object::player::enter_link {
		1697	my ($self) = @_;
		1698
		1699	$self->deactivate_recursive;
		1700
		1701	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1702
		1703	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1704	if $self->map;
		1705
		1706	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1707	}
		1708
		1709	sub cf::object::player::leave_link {
		1710	my ($self, $map, $x, $y) = @_;
		1711
		1712	my $link_pos = delete $self->{_link_pos};
		1713
		1714	unless ($map) {
		1715	# restore original map position
		1716	($map, $x, $y) = @{ $link_pos || [] };
		1717	$map = cf::map::find $map;
		1718
		1719	unless ($map) {
		1720	($map, $x, $y) = @$EMERGENCY_POSITION;
		1721	$map = cf::map::find $map
		1722	or die "FATAL: cannot load emergency map\n";
		1723	}
		1724	}
		1725
		1726	($x, $y) = (-1, -1)
		1727	unless (defined $x) && (defined $y);
		1728
		1729	# use -1 or undef as default coordinates, not 0, 0
		1730	($x, $y) = ($map->enter_x, $map->enter_y)
		1731	if $x <=0 && $y <= 0;
		1732
		1733	$map->load;
		1734	$map->load_diag;
		1735
		1736	return unless $self->contr->active;
		1737	$self->activate_recursive;
		1738	$self->enter_map ($map, $x, $y);
		1739	}
		1740
		1741	cf::player->attach (
		1742	on_logout => sub {
		1743	my ($pl) = @_;
		1744
		1745	# abort map switching before logout
		1746	if ($pl->ob->{_link_pos}) {
		1747	cf::sync_job {
		1748	$pl->ob->leave_link
		1749	};
		1750	}
		1751	},
		1752	on_login => sub {
		1753	my ($pl) = @_;
		1754
		1755	# try to abort aborted map switching on player login :)
		1756	# should happen only on crashes
		1757	if ($pl->ob->{_link_pos}) {
		1758	$pl->ob->enter_link;
		1759	(async {
		1760	# we need this sleep as the login has a concurrent enter_exit running
		1761	# and this sleep increases chances of the player not ending up in scorn
		1762	$pl->ob->reply (undef,
		1763	"There was an internal problem at your last logout, "
		1764	. "the server will try to bring you to your intended destination in a second.",
		1765	cf::NDI_RED);
		1766	Coro::Timer::sleep 1;
		1767	$pl->ob->leave_link;
		1768	})->prio (2);
		1769	}
		1770	},
		1771	);
		1772
		1773	=item $player_object->goto ($path, $x, $y)
		1774
		1775	=cut
		1776
		1777	sub cf::object::player::goto {
		1778	my ($self, $path, $x, $y) = @_;
		1779
		1780	$self->enter_link;
		1781
		1782	(async {
		1783	my $map = cf::map::find $path;
		1784	$map = $map->customise_for ($self) if $map;
		1785
		1786	# warn "entering ", $map->path, " at ($x, $y)\n"
		1787	# if $map;
		1788
		1789	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1790
		1791	$self->leave_link ($map, $x, $y);
		1792	})->prio (1);
		1793	}
		1794
		1795	=item $player_object->enter_exit ($exit_object)
		1796
		1797	=cut
		1798
		1799	sub parse_random_map_params {
		1800	my ($spec) = @_;
		1801
		1802	my $rmp = { # defaults
		1803	xsize => 10,
		1804	ysize => 10,
		1805	};
		1806
		1807	for (split /\n/, $spec) {
		1808	my ($k, $v) = split /\s+/, $_, 2;
		1809
		1810	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1811	}
		1812
		1813	$rmp
		1814	}
		1815
		1816	sub prepare_random_map {
		1817	my ($exit) = @_;
		1818
		1819	# all this does is basically replace the /! path by
		1820	# a new random map path (?random/...) with a seed
		1821	# that depends on the exit object
		1822
		1823	my $rmp = parse_random_map_params $exit->msg;
		1824
		1825	if ($exit->map) {
		1826	$rmp->{region} = $exit->map->region_name;
		1827	$rmp->{origin_map} = $exit->map->path;
		1828	$rmp->{origin_x} = $exit->x;
		1829	$rmp->{origin_y} = $exit->y;
		1830	}
		1831
		1832	$rmp->{random_seed} ||= $exit->random_seed;
		1833
		1834	my $data = cf::to_json $rmp;
		1835	my $md5 = Digest::MD5::md5_hex $data;
		1836
		1837	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1838	aio_write $fh, 0, (length $data), $data, 0;
		1839
		1840	$exit->slaying ("?random/$md5");
		1841	$exit->msg (undef);
		1842	}
		1843	}
		1844
		1845	sub cf::object::player::enter_exit {
		1846	my ($self, $exit) = @_;
		1847
		1848	return unless $self->type == cf::PLAYER;
		1849
		1850	$self->enter_link;
		1851
		1852	(async {
		1853	$self->deactivate_recursive; # just to be sure
		1854	unless (eval {
		1855	prepare_random_map $exit
		1856	if $exit->slaying eq "/!";
		1857
		1858	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1859	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1860
		1861	1;
		1862	}) {
		1863	$self->message ("Something went wrong deep within the crossfire server. "
		1864	. "I'll try to bring you back to the map you were before. "
		1865	. "Please report this to the dungeon master!",
		1866	cf::NDI_UNIQUE | cf::NDI_RED);
		1867
		1868	warn "ERROR in enter_exit: $@";
		1869	$self->leave_link;
		1870	}
		1871	})->prio (1);
		1872	}
		1873
		1874	=head3 cf::client
		1875
		1876	=over 4
		1877
		1878	=item $client->send_drawinfo ($text, $flags)
		1879
		1880	Sends a drawinfo packet to the client. Circumvents output buffering so
		1881	should not be used under normal circumstances.
		1882
		1883	=cut
		1884
		1885	sub cf::client::send_drawinfo {
		1886	my ($self, $text, $flags) = @_;
		1887
		1888	utf8::encode $text;
		1889	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1890	}
		1891
		1892
		1893	=item $success = $client->query ($flags, "text", \&cb)
		1894
		1895	Queues a query to the client, calling the given callback with
		1896	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1897	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1898
		1899	Queries can fail, so check the return code. Or don't, as queries will become
		1900	reliable at some point in the future.
		1901
		1902	=cut
		1903
		1904	sub cf::client::query {
		1905	my ($self, $flags, $text, $cb) = @_;
		1906
		1907	return unless $self->state == ST_PLAYING
		1908	|| $self->state == ST_SETUP
		1909	|| $self->state == ST_CUSTOM;
		1910
		1911	$self->state (ST_CUSTOM);
		1912
		1913	utf8::encode $text;
		1914	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1915
		1916	$self->send_packet ($self->{query_queue}[0][0])
		1917	if @{ $self->{query_queue} } == 1;
		1918	}
		1919
		1920	cf::client->attach (
		1921	on_reply => sub {
		1922	my ($ns, $msg) = @_;
		1923
		1924	# this weird shuffling is so that direct followup queries
		1925	# get handled first
		1926	my $queue = delete $ns->{query_queue}
		1927	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1928
		1929	(shift @$queue)->[1]->($msg);
		1930
		1931	push @{ $ns->{query_queue} }, @$queue;
		1932
		1933	if (@{ $ns->{query_queue} } == @$queue) {
		1934	if (@$queue) {
		1935	$ns->send_packet ($ns->{query_queue}[0][0]);
		1936	} else {
		1937	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1938	}
		1939	}
		1940	},
		1941	);
		1942
		1943	=item $client->async (\&cb)
		1944
		1945	Create a new coroutine, running the specified callback. The coroutine will
		1946	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1947	or loss of connection).
		1948
		1949	=cut
		1950
		1951	sub cf::client::async {
		1952	my ($self, $cb) = @_;
		1953
		1954	my $coro = &Coro::async ($cb);
		1955
		1956	$coro->on_destroy (sub {
		1957	delete $self->{_coro}{$coro+0};
		1958	});
		1959
		1960	$self->{_coro}{$coro+0} = $coro;
		1961
		1962	$coro
		1963	}
		1964
		1965	cf::client->attach (
		1966	on_destroy => sub {
		1967	my ($ns) = @_;
		1968
		1969	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1970	},
		1971	);
		1972
		1973	=back
		1974
786		1975
787	=head2 SAFE SCRIPTING	1976	=head2 SAFE SCRIPTING
788		1977
789	Functions that provide a safe environment to compile and execute	1978	Functions that provide a safe environment to compile and execute
790	snippets of perl code without them endangering the safety of the server	1979	snippets of perl code without them endangering the safety of the server
…		…
942		2131
943	{	2132	{
944	my $path = cf::localdir . "/database.pst";	2133	my $path = cf::localdir . "/database.pst";
945		2134
946	sub db_load() {	2135	sub db_load() {
947	warn "loading database $path\n";#d# remove later
948	$DB = stat $path ? Storable::retrieve $path : { };	2136	$DB = stat $path ? Storable::retrieve $path : { };
949	}	2137	}
950		2138
951	my $pid;	2139	my $pid;
952		2140
953	sub db_save() {	2141	sub db_save() {
954	warn "saving database $path\n";#d# remove later
955	waitpid $pid, 0 if $pid;	2142	waitpid $pid, 0 if $pid;
956	if (0 == ($pid = fork)) {	2143	if (0 == ($pid = fork)) {
957	$DB->{_meta}{version} = 1;	2144	$DB->{_meta}{version} = 1;
958	Storable::nstore $DB, "$path~";	2145	Storable::nstore $DB, "$path~";
959	rename "$path~", $path;	2146	rename "$path~", $path;
…		…
1007	open my $fh, "<:utf8", cf::confdir . "/config"	2194	open my $fh, "<:utf8", cf::confdir . "/config"
1008	or return;	2195	or return;
1009		2196
1010	local $/;	2197	local $/;
1011	*CFG = YAML::Syck::Load <$fh>;	2198	*CFG = YAML::Syck::Load <$fh>;
		2199
		2200	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2201
		2202	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2203	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2204
		2205	if (exists $CFG{mlockall}) {
		2206	eval {
		2207	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2208	and die "WARNING: m(un)lockall failed: $!\n";
		2209	};
		2210	warn $@ if $@;
		2211	}
1012	}	2212	}
1013		2213
1014	sub main {	2214	sub main {
		2215	# we must not ever block the main coroutine
		2216	local $Coro::idle = sub {
		2217	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2218	async { Event::one_event };
		2219	};
		2220
1015	cfg_load;	2221	cfg_load;
1016	db_load;	2222	db_load;
1017	load_extensions;	2223	load_extensions;
1018	Event::loop;	2224	Event::loop;
1019	}	2225	}
1020		2226
1021	#############################################################################	2227	#############################################################################
1022	# initialisation	2228	# initialisation and cleanup
1023		2229
		2230	# install some emergency cleanup handlers
		2231	BEGIN {
		2232	for my $signal (qw(INT HUP TERM)) {
		2233	Event->signal (
		2234	data => WF_AUTOCANCEL,
		2235	signal => $signal,
		2236	cb => sub {
		2237	cf::cleanup "SIG$signal";
		2238	},
		2239	);
		2240	}
		2241	}
		2242
		2243	sub emergency_save() {
		2244	my $freeze_guard = cf::freeze_mainloop;
		2245
		2246	warn "enter emergency perl save\n";
		2247
		2248	cf::sync_job {
		2249	# use a peculiar iteration method to avoid tripping on perl
		2250	# refcount bugs in for. also avoids problems with players
		2251	# and maps saved/destroyed asynchronously.
		2252	warn "begin emergency player save\n";
		2253	for my $login (keys %cf::PLAYER) {
		2254	my $pl = $cf::PLAYER{$login} or next;
		2255	$pl->valid or next;
		2256	$pl->save;
		2257	}
		2258	warn "end emergency player save\n";
		2259
		2260	warn "begin emergency map save\n";
		2261	for my $path (keys %cf::MAP) {
		2262	my $map = $cf::MAP{$path} or next;
		2263	$map->valid or next;
		2264	$map->save;
		2265	}
		2266	warn "end emergency map save\n";
		2267	};
		2268
		2269	warn "leave emergency perl save\n";
		2270	}
		2271
1024	sub _perl_reload(&) {	2272	sub reload() {
1025	my ($msg) = @_;	2273	# can/must only be called in main
		2274	if ($Coro::current != $Coro::main) {
		2275	warn "can only reload from main coroutine\n";
		2276	return;
		2277	}
1026		2278
1027	$msg->("reloading...");	2279	warn "reloading...";
		2280
		2281	warn "freezing server";
		2282	my $guard = freeze_mainloop;
		2283	cf::emergency_save;
		2284
		2285	warn "sync database to disk";
		2286	cf::db_sync;
		2287	IO::AIO::flush;
1028		2288
1029	eval {	2289	eval {
		2290	# if anything goes wrong in here, we should simply crash as we already saved
		2291
1030	# cancel all watchers	2292	warn "cancel all watchers";
1031	for (Event::all_watchers) {	2293	for (Event::all_watchers) {
1032	$_->cancel if $_->data & WF_AUTOCANCEL;	2294	$_->cancel if $_->data & WF_AUTOCANCEL;
1033	}	2295	}
1034		2296
		2297	warn "cancel all extension coros";
		2298	$_->cancel for values %EXT_CORO;
		2299	%EXT_CORO = ();
		2300
		2301	warn "remove commands";
		2302	%COMMAND = ();
		2303
		2304	warn "remove ext commands";
		2305	%EXTCMD = ();
		2306
1035	# unload all extensions	2307	warn "unload/nuke all extensions";
1036	for (@exts) {	2308	for my $pkg (@EXTS) {
1037	$msg->("unloading <$_>");	2309	warn "... unloading $pkg";
1038	unload_extension $_;	2310
		2311	if (my $cb = $pkg->can ("unload")) {
		2312	eval {
		2313	$cb->($pkg);
		2314	1
		2315	} or warn "$pkg unloaded, but with errors: $@";
1039	}	2316	}
1040		2317
		2318	warn "... nuking $pkg";
		2319	Symbol::delete_package $pkg;
		2320	}
		2321
1041	# unload all modules loaded from $LIBDIR	2322	warn "unload all perl modules loaded from $LIBDIR";
1042	while (my ($k, $v) = each %INC) {	2323	while (my ($k, $v) = each %INC) {
1043	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2324	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1044		2325
1045	$msg->("removing <$k>");	2326	warn "removing <$k>";
1046	delete $INC{$k};	2327	delete $INC{$k};
1047		2328
1048	$k =~ s/\.pm$//;	2329	$k =~ s/\.pm$//;
1049	$k =~ s/\//::/g;	2330	$k =~ s/\//::/g;
1050		2331
…		…
1053	}	2334	}
1054		2335
1055	Symbol::delete_package $k;	2336	Symbol::delete_package $k;
1056	}	2337	}
1057		2338
1058	# sync database to disk
1059	cf::db_sync;
1060
1061	# get rid of safe::, as good as possible	2339	warn "get rid of safe::, as good as possible";
1062	Symbol::delete_package "safe::$_"	2340	Symbol::delete_package "safe::$_"
1063	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2341	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1064		2342
1065	# remove register_script_function callbacks
1066	# TODO
1067
1068	# unload cf.pm "a bit"	2343	warn "unload cf.pm \"a bit\"";
1069	delete $INC{"cf.pm"};	2344	delete $INC{"cf.pm"};
1070		2345
1071	# don't, removes xs symbols, too,	2346	# don't, removes xs symbols, too,
1072	# and global variables created in xs	2347	# and global variables created in xs
1073	#Symbol::delete_package __PACKAGE__;	2348	#Symbol::delete_package __PACKAGE__;
1074		2349
1075	# reload cf.pm
1076	$msg->("reloading cf.pm");	2350	warn "reloading cf.pm";
1077	require cf;	2351	require cf;
		2352	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1078		2353
1079	# load config and database again	2354	warn "load config and database again";
1080	cf::cfg_load;	2355	cf::cfg_load;
1081	cf::db_load;	2356	cf::db_load;
1082		2357
1083	# load extensions	2358	warn "load extensions";
1084	$msg->("load extensions");
1085	cf::load_extensions;	2359	cf::load_extensions;
1086		2360
1087	# reattach attachments to objects	2361	warn "reattach attachments to objects/players";
1088	$msg->("reattach");
1089	_global_reattach;	2362	_global_reattach;
		2363	warn "reattach attachments to maps";
		2364	reattach $_ for values %MAP;
1090	};	2365	};
1091	$msg->($@) if $@;
1092		2366
1093	$msg->("reloaded");	2367	if ($@) {
		2368	warn $@;
		2369	warn "error while reloading, exiting.";
		2370	exit 1;
		2371	}
		2372
		2373	warn "reloaded";
1094	};	2374	};
1095		2375
1096	sub perl_reload() {
1097	_perl_reload {
1098	warn $_[0];
1099	print "$_[0]\n";
1100	};
1101	}
1102
1103	register "<global>", __PACKAGE__;
1104
1105	register_command "perl-reload" => sub {	2376	register_command "reload" => sub {
1106	my ($who, $arg) = @_;	2377	my ($who, $arg) = @_;
1107		2378
1108	if ($who->flag (FLAG_WIZ)) {	2379	if ($who->flag (FLAG_WIZ)) {
1109	_perl_reload {	2380	$who->message ("start of reload.");
1110	warn $_[0];	2381	reload;
1111	$who->message ($_[0]);	2382	$who->message ("end of reload.");
1112	};
1113	}	2383	}
1114	};	2384	};
1115		2385
1116	unshift @INC, $LIBDIR;	2386	unshift @INC, $LIBDIR;
1117		2387
1118	$TICK_WATCHER = Event->timer (	2388	$TICK_WATCHER = Event->timer (
		2389	reentrant => 0,
1119	prio => 0,	2390	prio => 0,
1120	at => $NEXT_TICK || 1,	2391	at => $NEXT_TICK || $TICK,
1121	data => WF_AUTOCANCEL,	2392	data => WF_AUTOCANCEL,
1122	cb => sub {	2393	cb => sub {
		2394	$NOW = Event::time;
		2395
1123	cf::server_tick; # one server iteration	2396	cf::server_tick; # one server iteration
1124		2397	$RUNTIME += $TICK;
1125	my $NOW = Event::time;
1126	$NEXT_TICK += $TICK;	2398	$NEXT_TICK += $TICK;
1127		2399
		2400	$WAIT_FOR_TICK->broadcast;
		2401	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2402
1128	# if we are delayed by four ticks or more, skip them all	2403	# if we are delayed by four ticks or more, skip them all
1129	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2404	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1130		2405
1131	$TICK_WATCHER->at ($NEXT_TICK);	2406	$TICK_WATCHER->at ($NEXT_TICK);
1132	$TICK_WATCHER->start;	2407	$TICK_WATCHER->start;
1133	},	2408	},
1134	);	2409	);
1135		2410
1136	IO::AIO::max_poll_time $TICK * 0.2;	2411	IO::AIO::max_poll_time $TICK * 0.2;
1137		2412
		2413	$AIO_POLL_WATCHER = Event->io (
1138	Event->io (fd => IO::AIO::poll_fileno,	2414	fd => IO::AIO::poll_fileno,
1139	poll => 'r',	2415	poll => 'r',
1140	prio => 5,	2416	prio => 5,
1141	data => WF_AUTOCANCEL,	2417	data => WF_AUTOCANCEL,
1142	cb => \&IO::AIO::poll_cb);	2418	cb => \&IO::AIO::poll_cb,
		2419	);
		2420
		2421	$WRITE_RUNTIME_WATCHER = Event->timer (
		2422	data => WF_AUTOCANCEL,
		2423	after => 0,
		2424	interval => 10,
		2425	cb => sub {
		2426	(Coro::unblock_sub {
		2427	write_runtime
		2428	or warn "ERROR: unable to write runtime file: $!";
		2429	})->();
		2430	},
		2431	);
		2432
		2433	END { cf::emergency_save }
1143		2434
1144	1	2435	1
1145		2436

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