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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.41 by root, Fri Aug 25 15:25:12 2006 UTC vs.
Revision 1.183 by root, Fri Jan 19 19:42:37 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 3.4 ();
		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 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$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
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
		31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
16	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
17	our @EVENT;	44	our @EVENT;
18	our @PLUGIN_EVENT;	45	our $LIBDIR = datadir . "/ext";
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";
22		46
23	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
25	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
		53
		54	our %CFG;
		55
		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;
		87
		88	#############################################################################
		89
		90	=head2 GLOBAL VARIABLES
		91
		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.
		102
		103	=item $cf::LIBDIR
		104
		105	The perl library directory, where extensions and cf-specific modules can
		106	be found. It will be added to C<@INC> automatically.
		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
		112	=item $cf::TICK
		113
		114	The interval between server ticks, in seconds.
		115
		116	=item %cf::CFG
		117
		118	Configuration for the server, loaded from C</etc/crossfire/config>, or
		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.
		127
		128	=back
		129
		130	=cut
26		131
27	BEGIN {	132	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
32	$msg .= "\n"	137	$msg .= "\n"
33	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
34		139
35	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
37	};	141	};
38	}	142	}
39		143
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
41		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
42	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
43	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
44	my ($prefix, $class) = @_;	148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
45
46	no strict 'refs';
47
48	for my $prop (keys %PROP_TYPE) {
49	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
50	my $sub = lc $1;
51
52	my $type = $PROP_TYPE{$prop};
53	my $idx = $PROP_IDX {$prop};
54
55	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
56	$_[0]->get_property ($type, $idx)
57	};
58
59	*{"$class\::set_$sub"} = sub {
60	$_[0]->set_property ($type, $idx, $_[1]);
61	} unless $ignore_set{$prop};
62	}
63	}
64
65	# auto-generate most of the API
66
67	prop_gen OBJECT_PROP => "cf::object";
68	# CFAPI_OBJECT_ANIMATION?
69	prop_gen PLAYER_PROP => "cf::object::player";
70
71	prop_gen MAP_PROP => "cf::map";
72	prop_gen ARCH_PROP => "cf::arch";
73
74	# guessed hierarchies
75
76	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@safe::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78		150
79	# 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
80	# within the Safe compartment.	152	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
82	no strict 'refs';	160	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	162	}
85		163
86	$Event::DIED = sub {	164	$Event::DIED = sub {
87	warn "error in event callback: @_";	165	warn "error in event callback: @_";
88	};	166	};
89		167
90	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
91	my @exts;	169
92	my @hook;	170	=over 4
93	my %command;	171
94	my %extcmd;	172	=item dumpval $ref
		173
		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	}
		194
		195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
		202
		203	sub from_json($) {
		204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		205	JSON::Syck::Load $_[0]
		206	}
		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
		214	sub to_json($) {
		215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		216	JSON::Syck::Dump $_[0]
		217	}
		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
		370	=back
		371
		372	=cut
95		373
96	#############################################################################	374	#############################################################################
97	# "new" plug-in system
98		375
99	=item cf::object::attach ... # NYI	376	=head2 ATTACHABLE OBJECTS
100		377
101	=item cf::attach_global ...	378	Many objects in crossfire are so-called attachable objects. That means you can
		379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
102		381
103	=item cf::attach_to_type ...	382	In the following description, CLASS can be any of C<global>, C<object>
		383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
104		385
105	=item cf::attach_to_objects ...	386	=over 4
106		387
107	=item cf::attach_to_players ...	388	=item $attachable->attach ($attachment, key => $value...)
108		389
109	=item cf::attach_to_maps ...	390	=item $attachable->detach ($attachment)
110		391
111	prio => $number, # lower is earlier	392	Attach/detach a pre-registered attachment to a specific object and give it
112	on_xxx => \&cb,	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
		433	=item cf::CLASS::attachment $name, ...
		434
		435	Register an attachment by C<$name> through which attachable objects of the
		436	given CLASS can refer to this attachment.
		437
		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.
		440
		441	These calls expect any number of the following handler/hook descriptions:
		442
		443	=over 4
		444
		445	=item prio => $number
		446
		447	Set the priority for all following handlers/hooks (unless overwritten
		448	by another C<prio> setting). Lower priority handlers get executed
		449	earlier. The default priority is C<0>, and many built-in handlers are
		450	registered at priority C<-1000>, so lower priorities should not be used
		451	unless you know what you are doing.
		452
		453	=item type => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
		459	=item on_I<event> => \&cb
		460
		461	Call the given code reference whenever the named event happens (event is
		462	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		463	handlers are recognised generally depends on the type of object these
		464	handlers attach to).
		465
		466	See F<include/eventinc.h> for the full list of events supported, and their
		467	class.
		468
113	package => package::,	469	=item package => package::
		470
		471	Look for sub functions of the name C<< on_I<event> >> in the given
		472	package and register them. Only handlers for eevents supported by the
		473	object/class are recognised.
		474
		475	=back
		476
		477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
		479
		480	cf::object::attachment sockpuppet =>
		481	on_skill_attack => sub {
		482	my ($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.
114		494
115	=cut	495	=cut
116		496
117	# 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
118	our @CB_GLOBAL = (); # registry for all global events	498	our @CB_GLOBAL = (); # registry for all global events
119	our @CB_OBJECT = ();	499	our @CB_ATTACHABLE = (); # registry for all attachables
		500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
120	our @CB_PLAYER = ();	501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
121	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
122	our @CB_MAP = ();	504	our @CB_MAP = ();
123		505
		506	my %attachment;
		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
124	sub _attach_cb($\%$$$) {	514	sub _attach_cb($$$$) {
125	my ($registry, $undo, $event, $prio, $cb) = @_;	515	my ($registry, $event, $prio, $cb) = @_;
126		516
127	use sort 'stable';	517	use sort 'stable';
128		518
129	$cb = [$prio, $cb];	519	$cb = [$prio, $cb];
130		520
131	@{$registry->[$event]} = sort	521	@{$registry->[$event]} = sort
132	{ $a->[0] cmp $b->[0] }	522	{ $a->[0] cmp $b->[0] }
133	@{$registry->[$event] || []}, $cb;	523	@{$registry->[$event] || []}, $cb;
134
135	push @{$undo->{cb}}, [$event, $cb];
136	}	524	}
		525
		526	# hack
		527	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
137		528
138	# attach handles attaching event callbacks	529	# attach handles attaching event callbacks
139	# the only thing the caller has to do is pass the correct	530	# the only thing the caller has to do is pass the correct
140	# registry (== where the callback attaches to).	531	# registry (== where the callback attaches to).
141	sub _attach(\@$\@) {	532	sub _attach {
142	my ($registry, $klass, $arg) = @_;	533	my ($registry, $klass, @arg) = @_;
143		534
		535	my $object_type;
144	my $prio = 0;	536	my $prio = 0;
145
146	my %undo = (
147	registry => $registry,
148	cb => [],
149	);
150
151	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	537	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
152		538
		539	#TODO: get rid of this hack
		540	if ($attachable_klass{$klass}) {
		541	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		542	}
		543
153	while (@$arg) {	544	while (@arg) {
154	my $type = shift @$arg;	545	my $type = shift @arg;
155		546
156	if ($type eq "prio") {	547	if ($type eq "prio") {
157	$prio = shift @$arg;	548	$prio = shift @arg;
		549
		550	} elsif ($type eq "type") {
		551	$object_type = shift @arg;
		552	$registry = $CB_TYPE[$object_type] ||= [];
		553
		554	} elsif ($type eq "subtype") {
		555	defined $object_type or Carp::croak "subtype specified without type";
		556	my $object_subtype = shift @arg;
		557	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
158		558
159	} elsif ($type eq "package") {	559	} elsif ($type eq "package") {
160	my $pkg = shift @$arg;	560	my $pkg = shift @arg;
161		561
162	while (my ($name, $id) = each %cb_id) {	562	while (my ($name, $id) = each %cb_id) {
163	if (my $cb = $pkg->can ($name)) {	563	if (my $cb = $pkg->can ($name)) {
164	_attach_cb $registry, %undo, $id, $prio, $cb;	564	_attach_cb $registry, $id, $prio, $cb;
165	}	565	}
166	}	566	}
167		567
168	} elsif (exists $cb_id{$type}) {	568	} elsif (exists $cb_id{$type}) {
169	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;	569	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
170		570
171	} elsif (ref $type) {	571	} elsif (ref $type) {
172	warn "attaching objects not supported, ignoring.\n";	572	warn "attaching objects not supported, ignoring.\n";
173		573
174	} else {	574	} else {
175	shift @$arg;	575	shift @arg;
176	warn "attach argument '$type' not supported, ignoring.\n";	576	warn "attach argument '$type' not supported, ignoring.\n";
177	}	577	}
178	}	578	}
179
180	\%undo
181	}	579	}
182		580
183	sub cf::object::attach {	581	sub _object_attach {
184	die;	582	my ($obj, $name, %arg) = @_;
185	}
186		583
187	sub attach_global {	584	return if exists $obj->{_attachment}{$name};
188	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
189	}
190		585
191	sub attach_to_type {	586	if (my $attach = $attachment{$name}) {
192	my $type = shift;	587	my $registry = $obj->registry;
193	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
194	}
195		588
196	sub attach_to_objects {	589	for (@$attach) {
197	_attach @CB_OBJECT, KLASS_OBJECT, @_	590	my ($klass, @attach) = @$_;
198	}	591	_attach $registry, $klass, @attach;
		592	}
199		593
200	sub attach_to_players {	594	$obj->{$name} = \%arg;
201	_attach @CB_PLAYER, KLASS_PLAYER, @_	595	} else {
202	}	596	warn "object uses attachment '$name' that is not available, postponing.\n";
		597	}
203		598
204	sub attach_to_maps {	599	$obj->{_attachment}{$name} = undef;
205	_attach @CB_MAP, KLASS_MAP, @_	600	}
		601
		602	sub cf::attachable::attach {
		603	if (ref $_[0]) {
		604	_object_attach @_;
		605	} else {
		606	_attach shift->_attach_registry, @_;
		607	}
		608	};
		609
		610	# all those should be optimised
		611	sub cf::attachable::detach {
		612	my ($obj, $name) = @_;
		613
		614	if (ref $obj) {
		615	delete $obj->{_attachment}{$name};
		616	reattach ($obj);
		617	} else {
		618	Carp::croak "cannot, currently, detach class attachments";
		619	}
		620	};
		621
		622	sub cf::attachable::attached {
		623	my ($obj, $name) = @_;
		624
		625	exists $obj->{_attachment}{$name}
		626	}
		627
		628	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		629	eval "#line " . __LINE__ . " 'cf.pm'
		630	sub cf::\L$klass\E::_attach_registry {
		631	(\\\@CB_$klass, KLASS_$klass)
		632	}
		633
		634	sub cf::\L$klass\E::attachment {
		635	my \$name = shift;
		636
		637	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		638	}
		639	";
		640	die if $@;
206	}	641	}
207		642
208	our $override;	643	our $override;
		644	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
209		645
210	sub override() {	646	sub override {
211	$override = 1	647	$override = 1;
		648	@invoke_results = ();
212	}	649	}
213		650
214	sub invoke {	651	sub do_invoke {
215	my $event = shift;	652	my $event = shift;
216	my $callbacks = shift;	653	my $callbacks = shift;
217		654
		655	@invoke_results = ();
		656
218	local $override;	657	local $override;
219		658
220	for (@$callbacks) {	659	for (@$callbacks) {
221	eval { &{$_->[1]} };	660	eval { &{$_->[1]} };
222		661
223	if ($@) {	662	if ($@) {
224	warn "$@";	663	warn "$@";
225	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	664	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
226	override;	665	override;
227	}	666	}
228		667
229	return 1 if $override;	668	return 1 if $override;
230	}	669	}
231		670
232	0	671	0
233	}	672	}
234		673
		674	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		675
		676	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		677
		678	Generate an object-specific event with the given arguments.
		679
		680	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		681	removed in future versions), and there is no public API to access override
		682	results (if you must, access C<@cf::invoke_results> directly).
		683
		684	=back
		685
		686	=cut
		687
235	#############################################################################	688	#############################################################################
236	# old plug-in events	689	# object support
237		690
238	sub inject_event {	691	sub reattach {
239	my $extension = shift;	692	# basically do the same as instantiate, without calling instantiate
240	my $event_code = shift;	693	my ($obj) = @_;
241		694
242	my $cb = $hook[$event_code]{$extension}	695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
		697	my $registry = $obj->registry;
		698
		699	@$registry = ();
		700
		701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		702
		703	for my $name (keys %{ $obj->{_attachment} || {} }) {
		704	if (my $attach = $attachment{$name}) {
		705	for (@$attach) {
		706	my ($klass, @attach) = @$_;
		707	_attach $registry, $klass, @attach;
		708	}
		709	} else {
		710	warn "object uses attachment '$name' that is not available, postponing.\n";
		711	}
		712	}
		713	}
		714
		715	cf::attachable->attach (
		716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
		729	on_clone => sub {
		730	my ($src, $dst) = @_;
		731
		732	@{$dst->registry} = @{$src->registry};
		733
		734	%$dst = %$src;
		735
		736	%{$dst->{_attachment}} = %{$src->{_attachment}}
		737	if exists $src->{_attachment};
		738	},
		739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$rdata) {
		746	warn sprintf "saving %s (%d,%d)\n",
		747	$filename, length $$rdata, scalar @$objs;
		748
		749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		750	chmod SAVE_MODE, $fh;
		751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
		753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
		762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
		769	} else {
		770	warn "FATAL: $filename~: $!\n";
		771	}
		772	} else {
		773	aio_unlink $filename;
		774	aio_unlink "$filename.pst";
		775	}
		776	}
		777	}
		778
		779	sub object_freezer_as_string {
		780	my ($rdata, $objs) = @_;
		781
		782	use Data::Dumper;
		783
		784	$$rdata . Dumper $objs
		785	}
		786
		787	sub object_thawer_load {
		788	my ($filename) = @_;
		789
		790	my ($data, $av);
		791
		792	(aio_load $filename, $data) >= 0
243	or return;	793	or return;
244		794
245	&$cb	795	unless (aio_stat "$filename.pst") {
246	}	796	(aio_load "$filename.pst", $av) >= 0
247
248	sub inject_global_event {
249	my $event = shift;
250
251	my $cb = $hook[$event]
252	or return;	797	or return;
253		798	$av = eval { (Storable::thaw $av)->{objs} };
254	List::Util::max map &$_, values %$cb
255	}
256
257	sub inject_command {
258	my ($name, $obj, $params) = @_;
259
260	for my $cmd (@{ $command{$name} }) {
261	$cmd->[1]->($obj, $params);
262	}	799	}
263		800
264	-1	801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
		803	return ($data, $av);
265	}	804	}
		805
		806	#############################################################################
		807	# command handling &c
		808
		809	=item cf::register_command $name => \&callback($ob,$args);
		810
		811	Register a callback for execution when the client sends the user command
		812	$name.
		813
		814	=cut
266		815
267	sub register_command {	816	sub register_command {
268	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
269		818
270	my $caller = caller;	819	my $caller = caller;
271	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
272		821
273	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
274	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
275	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
276		833
277	sub register_extcmd {	834	sub register_extcmd {
278	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
279		836
280	my $caller = caller;	837	$EXTCMD{$name} = $cb;
281	#warn "registering extcmd '$name' to '$caller'";
282
283	$extcmd{$name} = [$cb, $caller];
284	}	838	}
285		839
286	sub register {	840	cf::player->attach (
287	my ($base, $pkg) = @_;	841	on_command => sub {
		842	my ($pl, $name, $params) = @_;
288		843
289	for my $idx (0 .. $#PLUGIN_EVENT) {	844	my $cb = $COMMAND{$name}
290	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {	845	or return;
291	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";	846
292	$hook[$idx]{$base} = $ref;	847	for my $cmd (@$cb) {
		848	$cmd->[1]->($pl->ob, $params);
293	}	849	}
		850
		851	cf::override;
294	}	852	},
295	}	853	on_extcmd => sub {
		854	my ($pl, $buf) = @_;
		855
		856	my $msg = eval { from_json $buf };
		857
		858	if (ref $msg) {
		859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		860	if (my %reply = $cb->($pl, $msg)) {
		861	$pl->ext_reply ($msg->{msgid}, %reply);
		862	}
		863	}
		864	} else {
		865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		866	}
		867
		868	cf::override;
		869	},
		870	);
296		871
297	sub load_extension {	872	sub load_extension {
298	my ($path) = @_;	873	my ($path) = @_;
299		874
300	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
301	my $base = $1;	876	my $base = $1;
302	my $pkg = $1;	877	my $pkg = $1;
303	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
304	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
305		880
306	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
307		882
308	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
309	or die "$path: $!";	884	or die "$path: $!";
310		885
311	my $source =	886	my $source =
312	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
313	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
314	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
315	. "\n};\n1";	890	. "\n};\n1";
316		891
317	eval $source	892	unless (eval $source) {
318	or die "$path: $@";	893	my $msg = $@ ? "$path: $@\n"
		894	: "extension disabled.\n";
		895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		896	warn $@;
		897	warn "mandatory extension failed to load, exiting.\n";
		898	exit 1;
		899	}
		900	die $@;
		901	}
319		902
320	push @exts, $pkg;	903	push @EXTS, $pkg;
321	$ext_pkg{$base} = $pkg;
322
323	# no strict 'refs';
324	# @{"$pkg\::ISA"} = ext::;
325
326	register $base, $pkg;
327	}
328
329	sub unload_extension {
330	my ($pkg) = @_;
331
332	warn "removing extension $pkg\n";
333
334	# remove hooks
335	for my $idx (0 .. $#PLUGIN_EVENT) {
336	delete $hook[$idx]{$pkg};
337	}
338
339	# remove commands
340	for my $name (keys %command) {
341	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
342
343	if (@cb) {
344	$command{$name} = \@cb;
345	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
346	} else {
347	delete $command{$name};
348	delete $COMMAND{"$name\000"};
349	}
350	}
351
352	# remove extcmds
353	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
354	delete $extcmd{$name};
355	}
356
357	if (my $cb = $pkg->can ("on_unload")) {
358	eval {
359	$cb->($pkg);
360	1
361	} or warn "$pkg unloaded, but with errors: $@";
362	}
363
364	Symbol::delete_package $pkg;
365	}	904	}
366		905
367	sub load_extensions {	906	sub load_extensions {
368	my $LIBDIR = maps_directory "perl";
369
370	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
371	next unless -r $ext;	908	next unless -r $ext;
372	eval {	909	eval {
373	load_extension $ext;	910	load_extension $ext;
374	1	911	1
375	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
376	}	913	}
377	}	914	}
378		915
379	sub _perl_reload(&) {	916	#############################################################################
		917
		918	=head2 CORE EXTENSIONS
		919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
		959	my ($login) = @_;
		960
		961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat path $login }
		963	}
		964
		965	sub find($) {
		966	return $cf::PLAYER{$_[0]} || do {
		967	my $login = $_[0];
		968
		969	my $guard = cf::lock_acquire "user_find:$login";
		970
		971	$cf::PLAYER{$_[0]} || do {
		972	my $pl = load_pl path $login
		973	or return;
		974	$cf::PLAYER{$login} = $pl
		975	}
		976	}
		977	}
		978
		979	sub save($) {
		980	my ($pl) = @_;
		981
		982	return if $pl->{deny_save};
		983
		984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string,
		1119	fallback => 1;
		1120
		1121	our $MAX_RESET = 3600;
		1122	our $DEFAULT_RESET = 3000;
		1123
		1124	sub generate_random_map {
		1125	my ($self, $rmp) = @_;
		1126	# mit "rum" bekleckern, nicht
		1127	$self->_create_random_map (
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region}), $rmp->{custom}
		1139	)
		1140	}
		1141
		1142	sub register {
		1143	my (undef, $regex) = @_;
		1144	my $pkg = caller;
		1145
		1146	no strict;
		1147	push @{"$pkg\::ISA"}, __PACKAGE__;
		1148
		1149	$EXT_MAP{$pkg} = qr<$regex>;
		1150	}
		1151
		1152	# also paths starting with '/'
		1153	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1154
		1155	sub thawer_merge {
		1156	my ($self, $merge) = @_;
		1157
		1158	# we have to keep some variables in memory intact
		1159	local $self->{path};
		1160	local $self->{load_path};
		1161	local $self->{deny_save};
		1162	local $self->{deny_reset};
		1163
		1164	$self->SUPER::thawer_merge ($merge);
		1165	}
		1166
		1167	sub normalise {
		1168	my ($path, $base) = @_;
		1169
		1170	# map plan:
		1171	#
		1172	# /! non-realised random map exit (special hack!)
		1173	# {... are special paths that are not being touched
		1174	# ?xxx/... are special absolute paths
		1175	# ?random/... random maps
		1176	# /... normal maps
		1177	# ~user/... per-player map of a specific user
		1178
		1179	$path =~ s/$PATH_SEP/\//go;
		1180
		1181	# treat it as relative path if it starts with
		1182	# something that looks reasonable
		1183	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1184	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1185
		1186	$base =~ s{[^/]+/?$}{};
		1187	$path = "$base/$path";
		1188	}
		1189
		1190	for ($path) {
		1191	redo if s{//}{/};
		1192	redo if s{/\.?/}{/};
		1193	redo if s{/[^/]+/\.\./}{/};
		1194	}
		1195
		1196	$path
		1197	}
		1198
		1199	sub new_from_path {
		1200	my (undef, $path, $base) = @_;
		1201
		1202	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1203
		1204	$path = normalise $path, $base;
		1205
		1206	for my $pkg (keys %EXT_MAP) {
		1207	if ($path =~ $EXT_MAP{$pkg}) {
		1208	my $self = bless cf::map::new, $pkg;
		1209	$self->{path} = $path; $self->path ($path);
		1210	$self->init; # pass $1 etc.
		1211	return $self;
		1212	}
		1213	}
		1214
		1215	Carp::carp "unable to resolve path '$path'.";
		1216	()
		1217	}
		1218
		1219	sub init {
		1220	my ($self) = @_;
		1221
		1222	$self
		1223	}
		1224
		1225	sub as_string {
		1226	my ($self) = @_;
		1227
		1228	"$self->{path}"
		1229	}
		1230
		1231	# the displayed name, this is a one way mapping
		1232	sub visible_name {
		1233	&as_string
		1234	}
		1235
		1236	# the original (read-only) location
		1237	sub load_path {
		1238	my ($self) = @_;
		1239
		1240	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1241	}
		1242
		1243	# the temporary/swap location
		1244	sub save_path {
		1245	my ($self) = @_;
		1246
		1247	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1248	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1249	}
		1250
		1251	# the unique path, undef == no special unique path
		1252	sub uniq_path {
		1253	my ($self) = @_;
		1254
		1255	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1256	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1257	}
		1258
		1259	# and all this just because we cannot iterate over
		1260	# all maps in C++...
		1261	sub change_all_map_light {
		1262	my ($change) = @_;
		1263
		1264	$_->change_map_light ($change)
		1265	for grep $_->outdoor, values %cf::MAP;
		1266	}
		1267
		1268	sub unlink_save {
		1269	my ($self) = @_;
		1270
		1271	utf8::encode (my $save = $self->save_path);
		1272	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1273	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1274	}
		1275
		1276	sub load_header_from($) {
		1277	my ($self, $path) = @_;
		1278
		1279	utf8::encode $path;
		1280	aio_open $path, O_RDONLY, 0
		1281	or return;
		1282
		1283	$self->_load_header ($path)
		1284	or return;
		1285
		1286	$self->{load_path} = $path;
		1287
		1288	1
		1289	}
		1290
		1291	sub load_orig {
		1292	my ($self) = @_;
		1293
		1294	$self->load_header_from ($self->load_path)
		1295	}
		1296
		1297	sub load_temp {
		1298	my ($self) = @_;
		1299
		1300	$self->load_header_from ($self->save_path)
		1301	}
		1302
		1303	sub load_header {
		1304	my ($self) = @_;
		1305
		1306	if ($self->load_temp) {
		1307	$self->last_access ((delete $self->{last_access})
		1308	|| $cf::RUNTIME); #d#
		1309	# safety
		1310	$self->{instantiate_time} = $cf::RUNTIME
		1311	if $self->{instantiate_time} > $cf::RUNTIME;
		1312	} else {
		1313	$self->load_orig
		1314	or return;
		1315
		1316	$self->{load_original} = 1;
		1317	$self->{instantiate_time} = $cf::RUNTIME;
		1318	$self->last_access ($cf::RUNTIME);
		1319	$self->instantiate;
		1320	}
		1321
		1322	1
		1323	}
		1324
		1325	sub find;
		1326	sub find {
		1327	my ($path, $origin) = @_;
		1328
		1329	$path = normalise $path, $origin && $origin->path;
		1330
		1331	cf::lock_wait "map_find:$path";
		1332
		1333	$cf::MAP{$path} || do {
		1334	my $guard = cf::lock_acquire "map_find:$path";
		1335	my $map = new_from_path cf::map $path
		1336	or return;
		1337
		1338	$map->{last_save} = $cf::RUNTIME;
		1339
		1340	$map->load_header
		1341	or return;
		1342
		1343	if ($map->should_reset) {
		1344	$cf::WAIT_FOR_TICK->wait;
		1345	$map->reset;
		1346	undef $guard;
		1347	$map = find $path
		1348	or return;
		1349	}
		1350
		1351	$cf::MAP{$path} = $map
		1352	}
		1353	}
		1354
		1355	sub load {
		1356	my ($self) = @_;
		1357
		1358	my $path = $self->{path};
		1359	my $guard = cf::lock_acquire "map_load:$path";
		1360
		1361	return if $self->in_memory != cf::MAP_SWAPPED;
		1362
		1363	$self->in_memory (cf::MAP_LOADING);
		1364
		1365	$self->alloc;
		1366	$self->_load_objects ($self->{load_path}, 1)
		1367	or return;
		1368
		1369	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1370	if delete $self->{load_original};
		1371
		1372	if (my $uniq = $self->uniq_path) {
		1373	utf8::encode $uniq;
		1374	if (aio_open $uniq, O_RDONLY, 0) {
		1375	$self->clear_unique_items;
		1376	$self->_load_objects ($uniq, 0);
		1377	}
		1378	}
		1379
		1380	Coro::cede;
		1381
		1382	# now do the right thing for maps
		1383	$self->link_multipart_objects;
		1384
		1385	unless ($self->{deny_activate}) {
		1386	$self->decay_objects;
		1387	$self->fix_auto_apply;
		1388	$self->update_buttons;
		1389	Coro::cede;
		1390	$self->set_darkness_map;
		1391	$self->difficulty ($self->estimate_difficulty)
		1392	unless $self->difficulty;
		1393	Coro::cede;
		1394	$self->activate;
		1395	}
		1396
		1397	$self->in_memory (cf::MAP_IN_MEMORY);
		1398	}
		1399
		1400	sub customise_for {
		1401	my ($self, $ob) = @_;
		1402
		1403	return find "~" . $ob->name . "/" . $self->{path}
		1404	if $self->per_player;
		1405
		1406	$self
		1407	}
		1408
		1409	# find and load all maps in the 3x3 area around a map
		1410	sub load_diag {
380	my ($msg) = @_;	1411	my ($map) = @_;
381		1412
382	$msg->("reloading...");	1413	my @diag; # diagonal neighbours
383		1414
384	eval {	1415	for (0 .. 3) {
385	# 1. cancel all watchers	1416	my $neigh = $map->tile_path ($_)
386	$_->cancel for Event::all_watchers;	1417	or next;
		1418	$neigh = find $neigh, $map
		1419	or next;
		1420	$neigh->load;
387		1421
388	# 2. unload all extensions	1422	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
389	for (@exts) {	1423	[$neigh->tile_path (($_ + 1) % 4), $neigh];
390	$msg->("unloading <$_>");	1424	}
391	unload_extension $_;
392	}
393		1425
394	# 3. unload all modules loaded from $LIBDIR	1426	for (@diag) {
395	while (my ($k, $v) = each %INC) {	1427	my $neigh = find @$_
396	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1428	or next;
		1429	$neigh->load;
		1430	}
		1431	}
397		1432
398	$msg->("removing <$k>");	1433	sub find_sync {
399	delete $INC{$k};	1434	my ($path, $origin) = @_;
400		1435
401	$k =~ s/\.pm$//;	1436	cf::sync_job { find $path, $origin }
402	$k =~ s/\//::/g;	1437	}
403		1438
404	if (my $cb = $k->can ("unload_module")) {	1439	sub do_load_sync {
405	$cb->();	1440	my ($map) = @_;
		1441
		1442	cf::sync_job { $map->load };
		1443	}
		1444
		1445	our %MAP_PREFETCH;
		1446	our $MAP_PREFETCHER = undef;
		1447
		1448	sub find_async {
		1449	my ($path, $origin) = @_;
		1450
		1451	$path = normalise $path, $origin && $origin->{path};
		1452
		1453	if (my $map = $cf::MAP{$path}) {
		1454	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1455	}
		1456
		1457	undef $MAP_PREFETCH{$path};
		1458	$MAP_PREFETCHER ||= cf::async {
		1459	while (%MAP_PREFETCH) {
		1460	for my $path (keys %MAP_PREFETCH) {
		1461	warn "prefetching $path...\n";#d#
		1462	my $map = find $path
		1463	or next;
		1464	$map->load;
		1465
		1466	delete $MAP_PREFETCH{$path};
406	}	1467	}
407
408	Symbol::delete_package $k;
409	}
410
411	# 4. get rid of safe::, as good as possible
412	Symbol::delete_package "safe::$_"
413	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
414
415	# 5. remove register_script_function callbacks
416	# TODO
417		1468	}
418	# 6. unload cf.pm "a bit"	1469	undef $MAP_PREFETCHER;
419	delete $INC{"cf.pm"};
420
421	# don't, removes xs symbols, too,
422	# and global variables created in xs
423	#Symbol::delete_package __PACKAGE__;
424
425	# 7. reload cf.pm
426	$msg->("reloading cf.pm");
427	require cf;
428	};	1470	};
429	$msg->($@) if $@;
430		1471
431	$msg->("reloaded");	1472	()
432	};	1473	}
433		1474
434	sub perl_reload() {	1475	sub save {
435	_perl_reload {	1476	my ($self) = @_;
436	warn $_[0];	1477
437	print "$_[0]\n";	1478	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1479
		1480	$self->{last_save} = $cf::RUNTIME;
		1481
		1482	return unless $self->dirty;
		1483
		1484	my $save = $self->save_path; utf8::encode $save;
		1485	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1486
		1487	$self->{load_path} = $save;
		1488
		1489	return if $self->{deny_save};
		1490
		1491	local $self->{last_access} = $self->last_access;#d#
		1492
		1493	cf::async {
		1494	$_->contr->save for $self->players;
438	};	1495	};
439	}
440		1496
441	register_command "perl-reload", 0, sub {	1497	if ($uniq) {
442	my ($who, $arg) = @_;	1498	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
443		1499	$self->_save_objects ($uniq, cf::IO_UNIQUES);
444	if ($who->flag (FLAG_WIZ)) {
445	_perl_reload {
446	warn $_[0];
447	$who->message ($_[0]);
448	};
449	}
450	};
451
452	#############################################################################
453	# utility functions
454
455	use JSON::Syck (); # TODO# replace by JSON::PC once working
456
457	sub from_json($) {
458	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
459	JSON::Syck::Load $_[0]
460	}
461
462	sub to_json($) {
463	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
464	JSON::Syck::Dump $_[0]
465	}
466
467	#############################################################################
468	# extcmd framework, basically convert ext <msg>
469	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
470
471	sub on_extcmd {
472	my ($pl, $buf) = @_;
473
474	my $msg = eval { from_json $buf };
475
476	if (ref $msg) {
477	if (my $cb = $extcmd{$msg->{msgtype}}) {
478	if (my %reply = $cb->[0]->($pl, $msg)) {
479	$pl->ext_reply ($msg->{msgid}, %reply);
480	}
481	}
482	} else {	1500	} else {
483	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1501	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
484	}
485
486	1
487	}
488
489	#############################################################################
490	# load/save/clean perl data associated with a map
491
492	*cf::mapsupport::on_clean = sub {
493	my ($map) = @_;
494
495	my $path = $map->tmpname;
496	defined $path or return;
497
498	unlink "$path.cfperl";
499	};
500
501	*cf::mapsupport::on_swapin =
502	*cf::mapsupport::on_load = sub {
503	my ($map) = @_;
504
505	my $path = $map->tmpname;
506	$path = $map->path unless defined $path;
507
508	open my $fh, "<:raw", "$path.cfperl"
509	or return; # no perl data
510
511	my $data = Storable::thaw do { local $/; <$fh> };
512
513	$data->{version} <= 1
514	or return; # too new
515
516	$map->_set_obs ($data->{obs});
517	};
518
519	*cf::mapsupport::on_swapout = sub {
520	my ($map) = @_;
521
522	my $path = $map->tmpname;
523	$path = $map->path unless defined $path;
524
525	my $obs = $map->_get_obs;
526
527	if (defined $obs) {
528	open my $fh, ">:raw", "$path.cfperl"
529	or die "$path.cfperl: $!";
530
531	stat $path;
532
533	print $fh Storable::nfreeze {
534	size => (stat _)[7],
535	time => (stat _)[9],
536	version => 1,
537	obs => $obs,
538	};
539
540	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
541	} else {
542	unlink "$path.cfperl";
543	}
544	};
545
546	attach_to_maps prio => -10000, package => cf::mapsupport::;
547
548	#############################################################################
549	# load/save perl data associated with player->ob objects
550
551	sub all_objects(@) {
552	@_, map all_objects ($_->inv), @_
553	}
554
555	attach_to_players
556	on_load => sub {
557	my ($pl, $path) = @_;
558
559	for my $o (all_objects $pl->ob) {
560	if (my $value = $o->get_ob_key_value ("_perl_data")) {
561	$o->set_ob_key_value ("_perl_data");
562
563	%$o = %{ Storable::thaw pack "H*", $value };
564	}
565	}
566	},	1502	}
567	on_save => sub {	1503	}
568	my ($pl, $path) = @_;
569		1504
570	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)	1505	sub swap_out {
571	for grep %$_, all_objects $pl->ob;	1506	my ($self) = @_;
		1507
		1508	# save first because save cedes
		1509	$self->save;
		1510
		1511	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1512
		1513	return if $self->players;
		1514	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1515	return if $self->{deny_save};
		1516
		1517	$self->clear;
		1518	$self->in_memory (cf::MAP_SWAPPED);
		1519	}
		1520
		1521	sub reset_at {
		1522	my ($self) = @_;
		1523
		1524	# TODO: safety, remove and allow resettable per-player maps
		1525	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1526	return 1e99 if $self->{deny_reset};
		1527
		1528	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1529	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1530
		1531	$time + $to
		1532	}
		1533
		1534	sub should_reset {
		1535	my ($self) = @_;
		1536
		1537	$self->reset_at <= $cf::RUNTIME
		1538	}
		1539
		1540	sub reset {
		1541	my ($self) = @_;
		1542
		1543	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1544
		1545	return if $self->players;
		1546	return if $self->isa ("ext::map_per_player");#d#
		1547
		1548	warn "resetting map ", $self->path;#d#
		1549
		1550	delete $cf::MAP{$self->path};
		1551
		1552	$self->in_memory (cf::MAP_SWAPPED);
		1553	$self->clear;
		1554
		1555	$_->clear_links_to ($self) for values %cf::MAP;
		1556
		1557	$self->unlink_save;
		1558	$self->destroy;
		1559	}
		1560
		1561	my $nuke_counter = "aaaa";
		1562
		1563	sub nuke {
		1564	my ($self) = @_;
		1565
		1566	delete $cf::MAP{$self->path};
		1567
		1568	$self->unlink_save;
		1569
		1570	bless $self, "cf::map";
		1571	delete $self->{deny_reset};
		1572	$self->{deny_save} = 1;
		1573	$self->reset_timeout (1);
		1574	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1575
		1576	$cf::MAP{$self->path} = $self;
		1577
		1578	$self->reset; # polite request, might not happen
		1579	}
		1580
		1581	=item cf::map::unique_maps
		1582
		1583	Returns an arrayref of paths of all shared maps that have
		1584	instantiated unique items. May block.
		1585
		1586	=cut
		1587
		1588	sub unique_maps() {
		1589	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1590	or return;
		1591
		1592	my @paths;
		1593
		1594	for (@$files) {
		1595	utf8::decode $_;
		1596	next if /\.pst$/;
		1597	next unless /^$PATH_SEP/o;
		1598
		1599	s/\.map$//;
		1600	push @paths, $_;
572	},	1601	}
573	;
574		1602
575	#############################################################################	1603	\@paths
576	# core extensions - in perl
577
578	=item cf::player::exists $login
579
580	Returns true when the given account exists.
581
582	=cut
583
584	sub cf::player::exists($) {
585	cf::player::find $_[0]
586	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
587	}	1604	}
588		1605
		1606	package cf;
		1607
		1608	=back
		1609
		1610	=head3 cf::object
		1611
		1612	=cut
		1613
		1614	package cf::object;
		1615
		1616	=over 4
		1617
		1618	=item $ob->inv_recursive
		1619
		1620	Returns the inventory of the object _and_ their inventories, recursively.
		1621
		1622	=cut
		1623
		1624	sub inv_recursive_;
		1625	sub inv_recursive_ {
		1626	map { $_, inv_recursive_ $_->inv } @_
		1627	}
		1628
		1629	sub inv_recursive {
		1630	inv_recursive_ inv $_[0]
		1631	}
		1632
		1633	package cf;
		1634
		1635	=back
		1636
		1637	=head3 cf::object::player
		1638
		1639	=over 4
		1640
589	=item $player->reply ($npc, $msg[, $flags])	1641	=item $player_object->reply ($npc, $msg[, $flags])
590		1642
591	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1643	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
592	can be C<undef>. Does the right thing when the player is currently in a	1644	can be C<undef>. Does the right thing when the player is currently in a
593	dialogue with the given NPC character.	1645	dialogue with the given NPC character.
594		1646
595	=cut	1647	=cut
596		1648
597	# rough implementation of a future "reply" method that works	1649	# rough implementation of a future "reply" method that works
598	# with dialog boxes.	1650	# with dialog boxes.
		1651	#TODO: the first argument must go, split into a $npc->reply_to ( method
599	sub cf::object::player::reply($$$;$) {	1652	sub cf::object::player::reply($$$;$) {
600	my ($self, $npc, $msg, $flags) = @_;	1653	my ($self, $npc, $msg, $flags) = @_;
601		1654
602	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1655	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
603		1656
…		…
607	$msg = $npc->name . " says: $msg" if $npc;	1660	$msg = $npc->name . " says: $msg" if $npc;
608	$self->message ($msg, $flags);	1661	$self->message ($msg, $flags);
609	}	1662	}
610	}	1663	}
611		1664
612	=item $player->ext_reply ($msgid, $msgtype, %msg)	1665	=item $player_object->may ("access")
613		1666
614	Sends an ext reply to the player.	1667	Returns wether the given player is authorized to access resource "access"
		1668	(e.g. "command_wizcast").
615		1669
616	=cut	1670	=cut
617		1671
618	sub cf::player::ext_reply($$$%) {	1672	sub cf::object::player::may {
		1673	my ($self, $access) = @_;
		1674
		1675	$self->flag (cf::FLAG_WIZ) ||
		1676	(ref $cf::CFG{"may_$access"}
		1677	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1678	: $cf::CFG{"may_$access"})
		1679	}
		1680
		1681	=item $player_object->enter_link
		1682
		1683	Freezes the player and moves him/her to a special map (C<{link}>).
		1684
		1685	The player should be reasonably safe there for short amounts of time. You
		1686	I<MUST> call C<leave_link> as soon as possible, though.
		1687
		1688	Will never block.
		1689
		1690	=item $player_object->leave_link ($map, $x, $y)
		1691
		1692	Moves the player out of the special C<{link}> map onto the specified
		1693	map. If the map is not valid (or omitted), the player will be moved back
		1694	to the location he/she was before the call to C<enter_link>, or, if that
		1695	fails, to the emergency map position.
		1696
		1697	Might block.
		1698
		1699	=cut
		1700
		1701	sub link_map {
		1702	unless ($LINK_MAP) {
		1703	$LINK_MAP = cf::map::find "{link}"
		1704	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1705	$LINK_MAP->load;
		1706	}
		1707
		1708	$LINK_MAP
		1709	}
		1710
		1711	sub cf::object::player::enter_link {
		1712	my ($self) = @_;
		1713
		1714	$self->deactivate_recursive;
		1715
		1716	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1717
		1718	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1719	if $self->map;
		1720
		1721	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1722	}
		1723
		1724	sub cf::object::player::leave_link {
		1725	my ($self, $map, $x, $y) = @_;
		1726
		1727	my $link_pos = delete $self->{_link_pos};
		1728
		1729	unless ($map) {
		1730	# restore original map position
		1731	($map, $x, $y) = @{ $link_pos || [] };
		1732	$map = cf::map::find $map;
		1733
		1734	unless ($map) {
		1735	($map, $x, $y) = @$EMERGENCY_POSITION;
		1736	$map = cf::map::find $map
		1737	or die "FATAL: cannot load emergency map\n";
		1738	}
		1739	}
		1740
		1741	($x, $y) = (-1, -1)
		1742	unless (defined $x) && (defined $y);
		1743
		1744	# use -1 or undef as default coordinates, not 0, 0
		1745	($x, $y) = ($map->enter_x, $map->enter_y)
		1746	if $x <=0 && $y <= 0;
		1747
		1748	$map->load;
		1749	$map->load_diag;
		1750
		1751	return unless $self->contr->active;
		1752	$self->activate_recursive;
		1753	$self->enter_map ($map, $x, $y);
		1754	}
		1755
		1756	cf::player->attach (
		1757	on_logout => sub {
		1758	my ($pl) = @_;
		1759
		1760	# abort map switching before logout
		1761	if ($pl->ob->{_link_pos}) {
		1762	cf::sync_job {
		1763	$pl->ob->leave_link
		1764	};
		1765	}
		1766	},
		1767	on_login => sub {
		1768	my ($pl) = @_;
		1769
		1770	# try to abort aborted map switching on player login :)
		1771	# should happen only on crashes
		1772	if ($pl->ob->{_link_pos}) {
		1773	$pl->ob->enter_link;
		1774	(async {
		1775	# we need this sleep as the login has a concurrent enter_exit running
		1776	# and this sleep increases chances of the player not ending up in scorn
		1777	$pl->ob->reply (undef,
		1778	"There was an internal problem at your last logout, "
		1779	. "the server will try to bring you to your intended destination in a second.",
		1780	cf::NDI_RED);
		1781	Coro::Timer::sleep 1;
		1782	$pl->ob->leave_link;
		1783	})->prio (2);
		1784	}
		1785	},
		1786	);
		1787
		1788	=item $player_object->goto ($path, $x, $y)
		1789
		1790	=cut
		1791
		1792	sub cf::object::player::goto {
		1793	my ($self, $path, $x, $y) = @_;
		1794
		1795	$self->enter_link;
		1796
		1797	(async {
		1798	my $map = cf::map::find $path;
		1799	$map = $map->customise_for ($self) if $map;
		1800
		1801	# warn "entering ", $map->path, " at ($x, $y)\n"
		1802	# if $map;
		1803
		1804	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1805
		1806	$self->leave_link ($map, $x, $y);
		1807	})->prio (1);
		1808	}
		1809
		1810	=item $player_object->enter_exit ($exit_object)
		1811
		1812	=cut
		1813
		1814	sub parse_random_map_params {
		1815	my ($spec) = @_;
		1816
		1817	my $rmp = { # defaults
		1818	xsize => (cf::rndm 15, 40),
		1819	ysize => (cf::rndm 15, 40),
		1820	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1821	#layout => string,
		1822	};
		1823
		1824	for (split /\n/, $spec) {
		1825	my ($k, $v) = split /\s+/, $_, 2;
		1826
		1827	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1828	}
		1829
		1830	$rmp
		1831	}
		1832
		1833	sub prepare_random_map {
		1834	my ($exit) = @_;
		1835
		1836	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1837
		1838	# all this does is basically replace the /! path by
		1839	# a new random map path (?random/...) with a seed
		1840	# that depends on the exit object
		1841
		1842	my $rmp = parse_random_map_params $exit->msg;
		1843
		1844	if ($exit->map) {
		1845	$rmp->{region} = $exit->map->region_name;
		1846	$rmp->{origin_map} = $exit->map->path;
		1847	$rmp->{origin_x} = $exit->x;
		1848	$rmp->{origin_y} = $exit->y;
		1849	}
		1850
		1851	$rmp->{random_seed} ||= $exit->random_seed;
		1852
		1853	my $data = cf::to_json $rmp;
		1854	my $md5 = Digest::MD5::md5_hex $data;
		1855	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1856
		1857	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1858	aio_write $fh, 0, (length $data), $data, 0;
		1859	undef $fh;
		1860	aio_rename "$meta~", $meta;
		1861
		1862	$exit->slaying ("?random/$md5");
		1863	$exit->msg (undef);
		1864	}
		1865	}
		1866
		1867	sub cf::object::player::enter_exit {
619	my ($self, $id, %msg) = @_;	1868	my ($self, $exit) = @_;
620		1869
621	$msg{msgid} = $id;	1870	return unless $self->type == cf::PLAYER;
622		1871
623	$self->send ("ext " . to_json \%msg);	1872	$self->enter_link;
624	}
625		1873
626	#############################################################################	1874	(async {
627	# map scripting support	1875	$self->deactivate_recursive; # just to be sure
		1876	unless (eval {
		1877	prepare_random_map $exit
		1878	if $exit->slaying eq "/!";
628		1879
		1880	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1881	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1882
		1883	1;
		1884	}) {
		1885	$self->message ("Something went wrong deep within the crossfire server. "
		1886	. "I'll try to bring you back to the map you were before. "
		1887	. "Please report this to the dungeon master!",
		1888	cf::NDI_UNIQUE | cf::NDI_RED);
		1889
		1890	warn "ERROR in enter_exit: $@";
		1891	$self->leave_link;
		1892	}
		1893	})->prio (1);
		1894	}
		1895
		1896	=head3 cf::client
		1897
		1898	=over 4
		1899
		1900	=item $client->send_drawinfo ($text, $flags)
		1901
		1902	Sends a drawinfo packet to the client. Circumvents output buffering so
		1903	should not be used under normal circumstances.
		1904
		1905	=cut
		1906
		1907	sub cf::client::send_drawinfo {
		1908	my ($self, $text, $flags) = @_;
		1909
		1910	utf8::encode $text;
		1911	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1912	}
		1913
		1914
		1915	=item $success = $client->query ($flags, "text", \&cb)
		1916
		1917	Queues a query to the client, calling the given callback with
		1918	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1919	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1920
		1921	Queries can fail, so check the return code. Or don't, as queries will become
		1922	reliable at some point in the future.
		1923
		1924	=cut
		1925
		1926	sub cf::client::query {
		1927	my ($self, $flags, $text, $cb) = @_;
		1928
		1929	return unless $self->state == ST_PLAYING
		1930	|| $self->state == ST_SETUP
		1931	|| $self->state == ST_CUSTOM;
		1932
		1933	$self->state (ST_CUSTOM);
		1934
		1935	utf8::encode $text;
		1936	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1937
		1938	$self->send_packet ($self->{query_queue}[0][0])
		1939	if @{ $self->{query_queue} } == 1;
		1940	}
		1941
		1942	cf::client->attach (
		1943	on_reply => sub {
		1944	my ($ns, $msg) = @_;
		1945
		1946	# this weird shuffling is so that direct followup queries
		1947	# get handled first
		1948	my $queue = delete $ns->{query_queue}
		1949	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1950
		1951	(shift @$queue)->[1]->($msg);
		1952
		1953	push @{ $ns->{query_queue} }, @$queue;
		1954
		1955	if (@{ $ns->{query_queue} } == @$queue) {
		1956	if (@$queue) {
		1957	$ns->send_packet ($ns->{query_queue}[0][0]);
		1958	} else {
		1959	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1960	}
		1961	}
		1962	},
		1963	);
		1964
		1965	=item $client->async (\&cb)
		1966
		1967	Create a new coroutine, running the specified callback. The coroutine will
		1968	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1969	or loss of connection).
		1970
		1971	=cut
		1972
		1973	sub cf::client::async {
		1974	my ($self, $cb) = @_;
		1975
		1976	my $coro = &Coro::async ($cb);
		1977
		1978	$coro->on_destroy (sub {
		1979	delete $self->{_coro}{$coro+0};
		1980	});
		1981
		1982	$self->{_coro}{$coro+0} = $coro;
		1983
		1984	$coro
		1985	}
		1986
		1987	cf::client->attach (
		1988	on_destroy => sub {
		1989	my ($ns) = @_;
		1990
		1991	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1992	},
		1993	);
		1994
		1995	=back
		1996
		1997
		1998	=head2 SAFE SCRIPTING
		1999
		2000	Functions that provide a safe environment to compile and execute
		2001	snippets of perl code without them endangering the safety of the server
		2002	itself. Looping constructs, I/O operators and other built-in functionality
		2003	is not available in the safe scripting environment, and the number of
		2004	functions and methods that can be called is greatly reduced.
		2005
		2006	=cut
		2007
629	our $safe = new Safe "ext";	2008	our $safe = new Safe "safe";
630	our $safe_hole = new Safe::Hole;	2009	our $safe_hole = new Safe::Hole;
631		2010
632	$SIG{FPE} = 'IGNORE';	2011	$SIG{FPE} = 'IGNORE';
633		2012
634	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2013	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
635		2014
636	# here we export the classes and methods available to script code	2015	# here we export the classes and methods available to script code
637		2016
		2017	=pod
		2018
		2019	The following fucntions and emthods are available within a safe environment:
		2020
		2021	cf::object contr pay_amount pay_player map
		2022	cf::object::player player
		2023	cf::player peaceful
		2024	cf::map trigger
		2025
		2026	=cut
		2027
638	for (	2028	for (
639	["cf::object" => qw(contr pay_amount pay_player)],	2029	["cf::object" => qw(contr pay_amount pay_player map)],
640	["cf::object::player" => qw(player)],	2030	["cf::object::player" => qw(player)],
641	["cf::player" => qw(peaceful)],	2031	["cf::player" => qw(peaceful)],
		2032	["cf::map" => qw(trigger)],
642	) {	2033	) {
643	no strict 'refs';	2034	no strict 'refs';
644	my ($pkg, @funs) = @$_;	2035	my ($pkg, @funs) = @$_;
645	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2036	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
646	for @funs;	2037	for @funs;
647	}	2038	}
648		2039
		2040	=over 4
		2041
		2042	=item @retval = safe_eval $code, [var => value, ...]
		2043
		2044	Compiled and executes the given perl code snippet. additional var/value
		2045	pairs result in temporary local (my) scalar variables of the given name
		2046	that are available in the code snippet. Example:
		2047
		2048	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2049
		2050	=cut
		2051
649	sub safe_eval($;@) {	2052	sub safe_eval($;@) {
650	my ($code, %vars) = @_;	2053	my ($code, %vars) = @_;
651		2054
652	my $qcode = $code;	2055	my $qcode = $code;
653	$qcode =~ s/"/‟/g; # not allowed in #line filenames	2056	$qcode =~ s/"/‟/g; # not allowed in #line filenames
654	$qcode =~ s/\n/\\n/g;	2057	$qcode =~ s/\n/\\n/g;
655		2058
656	local $_;	2059	local $_;
657	local @safe::cf::_safe_eval_args = values %vars;	2060	local @safe::cf::_safe_eval_args = values %vars;
658		2061
659	$code =	2062	my $eval =
660	"do {\n"	2063	"do {\n"
661	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	2064	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
662	. "#line 0 \"{$qcode}\"\n"	2065	. "#line 0 \"{$qcode}\"\n"
663	. $code	2066	. $code
664	. "\n}"	2067	. "\n}"
665	;	2068	;
666		2069
667	sub_generation_inc;	2070	sub_generation_inc;
668	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	2071	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
669	sub_generation_inc;	2072	sub_generation_inc;
670		2073
		2074	if ($@) {
		2075	warn "$@";
		2076	warn "while executing safe code '$code'\n";
		2077	warn "with arguments " . (join " ", %vars) . "\n";
		2078	}
		2079
671	wantarray ? @res : $res[0]	2080	wantarray ? @res : $res[0]
672	}	2081	}
		2082
		2083	=item cf::register_script_function $function => $cb
		2084
		2085	Register a function that can be called from within map/npc scripts. The
		2086	function should be reasonably secure and should be put into a package name
		2087	like the extension.
		2088
		2089	Example: register a function that gets called whenever a map script calls
		2090	C<rent::overview>, as used by the C<rent> extension.
		2091
		2092	cf::register_script_function "rent::overview" => sub {
		2093	...
		2094	};
		2095
		2096	=cut
673		2097
674	sub register_script_function {	2098	sub register_script_function {
675	my ($fun, $cb) = @_;	2099	my ($fun, $cb) = @_;
676		2100
677	no strict 'refs';	2101	no strict 'refs';
678	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2102	*{"safe::$fun"} = $safe_hole->wrap ($cb);
679	}	2103	}
680		2104
		2105	=back
		2106
		2107	=cut
		2108
		2109	#############################################################################
		2110
		2111	=head2 EXTENSION DATABASE SUPPORT
		2112
		2113	Crossfire maintains a very simple database for extension use. It can
		2114	currently store anything that can be serialised using Storable, which
		2115	excludes objects.
		2116
		2117	The parameter C<$family> should best start with the name of the extension
		2118	using it, it should be unique.
		2119
		2120	=over 4
		2121
		2122	=item $hashref = cf::db_get $family
		2123
		2124	Return a hashref for use by the extension C<$family>, which can be
		2125	modified. After modifications, you have to call C<cf::db_dirty> or
		2126	C<cf::db_sync>.
		2127
		2128	=item $value = cf::db_get $family => $key
		2129
		2130	Returns a single value from the database
		2131
		2132	=item cf::db_put $family => $hashref
		2133
		2134	Stores the given family hashref into the database. Updates are delayed, if
		2135	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2136
		2137	=item cf::db_put $family => $key => $value
		2138
		2139	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2140	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2141
		2142	=item cf::db_dirty
		2143
		2144	Marks the database as dirty, to be updated at a later time.
		2145
		2146	=item cf::db_sync
		2147
		2148	Immediately write the database to disk I<if it is dirty>.
		2149
		2150	=cut
		2151
		2152	our $DB;
		2153
		2154	{
		2155	my $path = cf::localdir . "/database.pst";
		2156
		2157	sub db_load() {
		2158	$DB = stat $path ? Storable::retrieve $path : { };
		2159	}
		2160
		2161	my $pid;
		2162
		2163	sub db_save() {
		2164	waitpid $pid, 0 if $pid;
		2165	if (0 == ($pid = fork)) {
		2166	$DB->{_meta}{version} = 1;
		2167	Storable::nstore $DB, "$path~";
		2168	rename "$path~", $path;
		2169	cf::_exit 0 if defined $pid;
		2170	}
		2171	}
		2172
		2173	my $dirty;
		2174
		2175	sub db_sync() {
		2176	db_save if $dirty;
		2177	undef $dirty;
		2178	}
		2179
		2180	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2181	db_sync;
		2182	});
		2183
		2184	sub db_dirty() {
		2185	$dirty = 1;
		2186	$idle->start;
		2187	}
		2188
		2189	sub db_get($;$) {
		2190	@_ >= 2
		2191	? $DB->{$_[0]}{$_[1]}
		2192	: ($DB->{$_[0]} ||= { })
		2193	}
		2194
		2195	sub db_put($$;$) {
		2196	if (@_ >= 3) {
		2197	$DB->{$_[0]}{$_[1]} = $_[2];
		2198	} else {
		2199	$DB->{$_[0]} = $_[1];
		2200	}
		2201	db_dirty;
		2202	}
		2203
		2204	cf::global->attach (
		2205	prio => 10000,
		2206	on_cleanup => sub {
		2207	db_sync;
		2208	},
		2209	);
		2210	}
		2211
681	#############################################################################	2212	#############################################################################
682	# the server's main()	2213	# the server's main()
683		2214
		2215	sub cfg_load {
		2216	open my $fh, "<:utf8", cf::confdir . "/config"
		2217	or return;
		2218
		2219	local $/;
		2220	*CFG = YAML::Syck::Load <$fh>;
		2221
		2222	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2223
		2224	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2225	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2226
		2227	if (exists $CFG{mlockall}) {
		2228	eval {
		2229	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2230	and die "WARNING: m(un)lockall failed: $!\n";
		2231	};
		2232	warn $@ if $@;
		2233	}
		2234	}
		2235
684	sub main {	2236	sub main {
		2237	# we must not ever block the main coroutine
		2238	local $Coro::idle = sub {
		2239	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2240	(async {
		2241	Event::one_event;
		2242	})->prio (Coro::PRIO_MAX);
		2243	};
		2244
		2245	cfg_load;
		2246	db_load;
		2247	load_extensions;
		2248
		2249	$TICK_WATCHER->start;
685	Event::loop;	2250	Event::loop;
686	}	2251	}
687		2252
688	#############################################################################	2253	#############################################################################
689	# initialisation	2254	# initialisation and cleanup
690		2255
691	register "<global>", __PACKAGE__;	2256	# install some emergency cleanup handlers
		2257	BEGIN {
		2258	for my $signal (qw(INT HUP TERM)) {
		2259	Event->signal (
		2260	data => WF_AUTOCANCEL,
		2261	signal => $signal,
		2262	cb => sub {
		2263	cf::cleanup "SIG$signal";
		2264	},
		2265	);
		2266	}
		2267	}
		2268
		2269	sub emergency_save() {
		2270	my $freeze_guard = cf::freeze_mainloop;
		2271
		2272	warn "enter emergency perl save\n";
		2273
		2274	cf::sync_job {
		2275	# use a peculiar iteration method to avoid tripping on perl
		2276	# refcount bugs in for. also avoids problems with players
		2277	# and maps saved/destroyed asynchronously.
		2278	warn "begin emergency player save\n";
		2279	for my $login (keys %cf::PLAYER) {
		2280	my $pl = $cf::PLAYER{$login} or next;
		2281	$pl->valid or next;
		2282	$pl->save;
		2283	}
		2284	warn "end emergency player save\n";
		2285
		2286	warn "begin emergency map save\n";
		2287	for my $path (keys %cf::MAP) {
		2288	my $map = $cf::MAP{$path} or next;
		2289	$map->valid or next;
		2290	$map->save;
		2291	}
		2292	warn "end emergency map save\n";
		2293	};
		2294
		2295	warn "leave emergency perl save\n";
		2296	}
		2297
		2298	sub reload() {
		2299	# can/must only be called in main
		2300	if ($Coro::current != $Coro::main) {
		2301	warn "can only reload from main coroutine";
		2302	return;
		2303	}
		2304
		2305	warn "reloading...";
		2306
		2307	warn "cancelling server ticker";
		2308	$TICK_WATCHER->cancel;
		2309
		2310	cf::emergency_save;
		2311
		2312	eval {
		2313	# if anything goes wrong in here, we should simply crash as we already saved
		2314
		2315	warn "syncing database to disk";
		2316	cf::db_sync;
		2317
		2318	warn "cancelling all WF_AUTOCANCEL watchers";
		2319	for (Event::all_watchers) {
		2320	$_->cancel if $_->data & WF_AUTOCANCEL;
		2321	}
		2322
		2323	warn "flushing outstanding aio requests";
		2324	for (;;) {
		2325	IO::AIO::flush;
		2326	Coro::cede;
		2327	last unless IO::AIO::nreqs;
		2328	warn "iterate...";
		2329	}
		2330
		2331	warn "cancelling all extension coros";
		2332	$_->cancel for values %EXT_CORO;
		2333	%EXT_CORO = ();
		2334
		2335	warn "removing commands";
		2336	%COMMAND = ();
		2337
		2338	warn "removing ext commands";
		2339	%EXTCMD = ();
		2340
		2341	warn "unloading/nuking all extensions";
		2342	for my $pkg (@EXTS) {
		2343	warn "... unloading $pkg";
		2344
		2345	if (my $cb = $pkg->can ("unload")) {
		2346	eval {
		2347	$cb->($pkg);
		2348	1
		2349	} or warn "$pkg unloaded, but with errors: $@";
		2350	}
		2351
		2352	warn "... nuking $pkg";
		2353	Symbol::delete_package $pkg;
		2354	}
		2355
		2356	warn "unloading all perl modules loaded from $LIBDIR";
		2357	while (my ($k, $v) = each %INC) {
		2358	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2359
		2360	warn "... unloading $k";
		2361	delete $INC{$k};
		2362
		2363	$k =~ s/\.pm$//;
		2364	$k =~ s/\//::/g;
		2365
		2366	if (my $cb = $k->can ("unload_module")) {
		2367	$cb->();
		2368	}
		2369
		2370	Symbol::delete_package $k;
		2371	}
		2372
		2373	warn "getting rid of safe::, as good as possible";
		2374	Symbol::delete_package "safe::$_"
		2375	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2376
		2377	warn "unloading cf.pm \"a bit\"";
		2378	delete $INC{"cf.pm"};
		2379
		2380	# don't, removes xs symbols, too,
		2381	# and global variables created in xs
		2382	#Symbol::delete_package __PACKAGE__;
		2383
		2384	warn "unload completed, starting to reload now";
		2385
		2386	warn "reloading cf.pm";
		2387	require cf;
		2388	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2389
		2390	warn "loading config and database again";
		2391	cf::cfg_load;
		2392	cf::db_load;
		2393
		2394	warn "loading extensions";
		2395	cf::load_extensions;
		2396
		2397	warn "reattaching attachments to objects/players";
		2398	_global_reattach;
		2399	warn "reattaching attachments to maps";
		2400	reattach $_ for values %MAP;
		2401
		2402	warn "restarting server ticker";
		2403
		2404	$TICK_WATCHER->start;
		2405	};
		2406
		2407	if ($@) {
		2408	warn $@;
		2409	warn "error while reloading, exiting.";
		2410	exit 1;
		2411	}
		2412
		2413	warn "reloaded";
		2414	};
		2415
		2416	our $RELOAD_WATCHER; # used only during reload
		2417
		2418	register_command "reload" => sub {
		2419	my ($who, $arg) = @_;
		2420
		2421	if ($who->flag (FLAG_WIZ)) {
		2422	$who->message ("reloading server.");
		2423
		2424	# doing reload synchronously and two reloads happen back-to-back,
		2425	# coro crashes during coro_state_free->destroy here.
		2426
		2427	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2428	reload;
		2429	undef $RELOAD_WATCHER;
		2430	});
		2431	}
		2432	};
692		2433
693	unshift @INC, $LIBDIR;	2434	unshift @INC, $LIBDIR;
694		2435
695	load_extensions;	2436	my $bug_warning = 0;
696		2437
697	$TICK_WATCHER = Event->timer (	2438	$TICK_WATCHER = Event->timer (
		2439	reentrant => 0,
		2440	parked => 1,
698	prio => 1,	2441	prio => 0,
699	at => $NEXT_TICK || 1,	2442	at => $NEXT_TICK || $TICK,
		2443	data => WF_AUTOCANCEL,
700	cb => sub {	2444	cb => sub {
		2445	if ($Coro::current != $Coro::main) {
		2446	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2447	unless ++$bug_warning > 10;
		2448	return;
		2449	}
		2450
		2451	$NOW = Event::time;
		2452
701	cf::server_tick; # one server iteration	2453	cf::server_tick; # one server iteration
702		2454	$RUNTIME += $TICK;
703	my $NOW = Event::time;
704	$NEXT_TICK += $TICK;	2455	$NEXT_TICK += $TICK;
705		2456
		2457	$WAIT_FOR_TICK->broadcast;
		2458	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2459
706	# if we are delayed by four ticks, skip them all	2460	# if we are delayed by four ticks or more, skip them all
707	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2461	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
708		2462
709	$TICK_WATCHER->at ($NEXT_TICK);	2463	$TICK_WATCHER->at ($NEXT_TICK);
710	$TICK_WATCHER->start;	2464	$TICK_WATCHER->start;
711	},	2465	},
712	);	2466	);
713		2467
		2468	IO::AIO::max_poll_time $TICK * 0.2;
		2469
		2470	$AIO_POLL_WATCHER = Event->io (
		2471	fd => IO::AIO::poll_fileno,
		2472	poll => 'r',
		2473	prio => 5,
		2474	data => WF_AUTOCANCEL,
		2475	cb => \&IO::AIO::poll_cb,
		2476	);
		2477
		2478	$WRITE_RUNTIME_WATCHER = Event->timer (
		2479	data => WF_AUTOCANCEL,
		2480	after => 1,
		2481	interval => 10,
		2482	cb => Coro::unblock_sub {
		2483	write_runtime
		2484	or warn "ERROR: unable to write runtime file: $!";
		2485	},
		2486	);
		2487
		2488	END { cf::emergency_save }
		2489
714	1	2490	1
715		2491

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