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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.44 by root, Sat Aug 26 08:44:06 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;
		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	# object support
98		375
99	sub reattach {	376	=head2 ATTACHABLE OBJECTS
100	warn "reattach<@_>\n";
101	}
102		377
103	sub instantiate {	378	Many objects in crossfire are so-called attachable objects. That means you can
104	warn "instantiate<@_>\n";	379	attach callbacks/event handlers (a collection of which is called an "attachment")
105	}	380	to it. All such attachable objects support the following methods.
106		381
107	sub clone {	382	In the following description, CLASS can be any of C<global>, C<object>
108	warn "clone<@_>\n";	383	C<player>, C<client> or C<map> (i.e. the attachable objects in
109	}	384	crossfire+).
110		385
111	#############################################################################	386	=over 4
112	# "new" plug-in system
113		387
114	=item cf::object::attach ... # NYI	388	=item $attachable->attach ($attachment, key => $value...)
115		389
116	=item cf::attach_global ...	390	=item $attachable->detach ($attachment)
117		391
118	=item cf::attach_to_type ...	392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
119		394
120	=item cf::attach_to_objects ...	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
121		397
122	=item cf::attach_to_players ...	398	$obj->attach (minesweeper => width => 10, height => 10);
123		399
124	=item cf::attach_to_maps ...	400	=item $bool = $attachable->attached ($name)
125		401
126	prio => $number, # lower is earlier	402	Checks wether the named attachment is currently attached to the object.
127	on_xxx => \&cb,	403
		404	=item cf::CLASS->attach ...
		405
		406	=item cf::CLASS->detach ...
		407
		408	Define an anonymous attachment and attach it to all objects of the given
		409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($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 => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
		459	=item on_I<event> => \&cb
		460
		461	Call the given code reference whenever the named event happens (event is
		462	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		463	handlers are recognised generally depends on the type of object these
		464	handlers attach to).
		465
		466	See F<include/eventinc.h> for the full list of events supported, and their
		467	class.
		468
128	package => package::,	469	=item package => package::
		470
		471	Look for sub functions of the name C<< on_I<event> >> in the given
		472	package and register them. Only handlers for eevents supported by the
		473	object/class are recognised.
		474
		475	=back
		476
		477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
		479
		480	cf::object::attachment sockpuppet =>
		481	on_skill_attack => sub {
		482	my ($self, $victim) = @_;
		483	...
		484	}
		485	}
		486
		487	=item $attachable->valid
		488
		489	Just because you have a perl object does not mean that the corresponding
		490	C-level object still exists. If you try to access an object that has no
		491	valid C counterpart anymore you get an exception at runtime. This method
		492	can be used to test for existence of the C object part without causing an
		493	exception.
129		494
130	=cut	495	=cut
131		496
132	# the following variables are defined in .xs and must not be re-created	497	# the following variables are defined in .xs and must not be re-created
133	our @CB_GLOBAL = (); # registry for all global events	498	our @CB_GLOBAL = (); # registry for all global events
134	our @CB_OBJECT = ();	499	our @CB_ATTACHABLE = (); # registry for all attachables
		500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
135	our @CB_PLAYER = ();	501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
136	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
137	our @CB_MAP = ();	504	our @CB_MAP = ();
138		505
		506	my %attachment;
		507
139	sub _attach_cb($\%$$$) {	508	sub _attach_cb($$$$) {
140	my ($registry, $undo, $event, $prio, $cb) = @_;	509	my ($registry, $event, $prio, $cb) = @_;
141		510
142	use sort 'stable';	511	use sort 'stable';
143		512
144	$cb = [$prio, $cb];	513	$cb = [$prio, $cb];
145		514
146	@{$registry->[$event]} = sort	515	@{$registry->[$event]} = sort
147	{ $a->[0] cmp $b->[0] }	516	{ $a->[0] cmp $b->[0] }
148	@{$registry->[$event] || []}, $cb;	517	@{$registry->[$event] || []}, $cb;
149
150	push @{$undo->{cb}}, [$event, $cb];
151	}	518	}
		519
		520	# hack
		521	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
152		522
153	# attach handles attaching event callbacks	523	# attach handles attaching event callbacks
154	# 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
155	# registry (== where the callback attaches to).	525	# registry (== where the callback attaches to).
156	sub _attach(\@$\@) {	526	sub _attach {
157	my ($registry, $klass, $arg) = @_;	527	my ($registry, $klass, @arg) = @_;
158		528
		529	my $object_type;
159	my $prio = 0;	530	my $prio = 0;
160
161	my %undo = (
162	registry => $registry,
163	cb => [],
164	);
165
166	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;
167		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
168	while (@$arg) {	538	while (@arg) {
169	my $type = shift @$arg;	539	my $type = shift @arg;
170		540
171	if ($type eq "prio") {	541	if ($type eq "prio") {
172	$prio = shift @$arg;	542	$prio = shift @arg;
		543
		544	} elsif ($type eq "type") {
		545	$object_type = shift @arg;
		546	$registry = $CB_TYPE[$object_type] ||= [];
		547
		548	} elsif ($type eq "subtype") {
		549	defined $object_type or Carp::croak "subtype specified without type";
		550	my $object_subtype = shift @arg;
		551	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
173		552
174	} elsif ($type eq "package") {	553	} elsif ($type eq "package") {
175	my $pkg = shift @$arg;	554	my $pkg = shift @arg;
176		555
177	while (my ($name, $id) = each %cb_id) {	556	while (my ($name, $id) = each %cb_id) {
178	if (my $cb = $pkg->can ($name)) {	557	if (my $cb = $pkg->can ($name)) {
179	_attach_cb $registry, %undo, $id, $prio, $cb;	558	_attach_cb $registry, $id, $prio, $cb;
180	}	559	}
181	}	560	}
182		561
183	} elsif (exists $cb_id{$type}) {	562	} elsif (exists $cb_id{$type}) {
184	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;	563	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
185		564
186	} elsif (ref $type) {	565	} elsif (ref $type) {
187	warn "attaching objects not supported, ignoring.\n";	566	warn "attaching objects not supported, ignoring.\n";
188		567
189	} else {	568	} else {
190	shift @$arg;	569	shift @arg;
191	warn "attach argument '$type' not supported, ignoring.\n";	570	warn "attach argument '$type' not supported, ignoring.\n";
192	}	571	}
193	}	572	}
194
195	\%undo
196	}	573	}
197		574
198	sub cf::object::attach {	575	sub _object_attach {
199	die;	576	my ($obj, $name, %arg) = @_;
200	}
201		577
202	sub attach_global {	578	return if exists $obj->{_attachment}{$name};
203	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
204	}
205		579
206	sub attach_to_type {	580	if (my $attach = $attachment{$name}) {
207	my $type = shift;	581	my $registry = $obj->registry;
208	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
209	}
210		582
211	sub attach_to_objects {	583	for (@$attach) {
212	_attach @CB_OBJECT, KLASS_OBJECT, @_	584	my ($klass, @attach) = @$_;
213	}	585	_attach $registry, $klass, @attach;
		586	}
214		587
215	sub attach_to_players {	588	$obj->{$name} = \%arg;
216	_attach @CB_PLAYER, KLASS_PLAYER, @_	589	} else {
217	}	590	warn "object uses attachment '$name' that is not available, postponing.\n";
		591	}
218		592
219	sub attach_to_maps {	593	$obj->{_attachment}{$name} = undef;
220	_attach @CB_MAP, KLASS_MAP, @_	594	}
		595
		596	sub cf::attachable::attach {
		597	if (ref $_[0]) {
		598	_object_attach @_;
		599	} else {
		600	_attach shift->_attach_registry, @_;
		601	}
		602	};
		603
		604	# all those should be optimised
		605	sub cf::attachable::detach {
		606	my ($obj, $name) = @_;
		607
		608	if (ref $obj) {
		609	delete $obj->{_attachment}{$name};
		610	reattach ($obj);
		611	} else {
		612	Carp::croak "cannot, currently, detach class attachments";
		613	}
		614	};
		615
		616	sub cf::attachable::attached {
		617	my ($obj, $name) = @_;
		618
		619	exists $obj->{_attachment}{$name}
		620	}
		621
		622	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		623	eval "#line " . __LINE__ . " 'cf.pm'
		624	sub cf::\L$klass\E::_attach_registry {
		625	(\\\@CB_$klass, KLASS_$klass)
		626	}
		627
		628	sub cf::\L$klass\E::attachment {
		629	my \$name = shift;
		630
		631	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		632	}
		633	";
		634	die if $@;
221	}	635	}
222		636
223	our $override;	637	our $override;
		638	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
224		639
225	sub override() {	640	sub override {
226	$override = 1	641	$override = 1;
		642	@invoke_results = ();
227	}	643	}
228		644
229	sub invoke {	645	sub do_invoke {
230	my $event = shift;	646	my $event = shift;
231	my $callbacks = shift;	647	my $callbacks = shift;
232		648
		649	@invoke_results = ();
		650
233	local $override;	651	local $override;
234		652
235	for (@$callbacks) {	653	for (@$callbacks) {
236	eval { &{$_->[1]} };	654	eval { &{$_->[1]} };
237		655
238	if ($@) {	656	if ($@) {
239	warn "$@";	657	warn "$@";
240	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	658	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
241	override;	659	override;
242	}	660	}
243		661
244	return 1 if $override;	662	return 1 if $override;
245	}	663	}
246		664
247	0	665	0
248	}	666	}
249		667
		668	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		669
		670	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		671
		672	Generate an object-specific event with the given arguments.
		673
		674	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		675	removed in future versions), and there is no public API to access override
		676	results (if you must, access C<@cf::invoke_results> directly).
		677
		678	=back
		679
		680	=cut
		681
250	#############################################################################	682	#############################################################################
251	# old plug-in events	683	# object support
252		684
253	sub inject_event {	685	sub reattach {
254	my $extension = shift;	686	# basically do the same as instantiate, without calling instantiate
255	my $event_code = shift;	687	my ($obj) = @_;
256		688
257	my $cb = $hook[$event_code]{$extension}	689	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		690
		691	my $registry = $obj->registry;
		692
		693	@$registry = ();
		694
		695	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		696
		697	for my $name (keys %{ $obj->{_attachment} || {} }) {
		698	if (my $attach = $attachment{$name}) {
		699	for (@$attach) {
		700	my ($klass, @attach) = @$_;
		701	_attach $registry, $klass, @attach;
		702	}
		703	} else {
		704	warn "object uses attachment '$name' that is not available, postponing.\n";
		705	}
		706	}
		707	}
		708
		709	cf::attachable->attach (
		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,
		723	on_clone => sub {
		724	my ($src, $dst) = @_;
		725
		726	@{$dst->registry} = @{$src->registry};
		727
		728	%$dst = %$src;
		729
		730	%{$dst->{_attachment}} = %{$src->{_attachment}}
		731	if exists $src->{_attachment};
		732	},
		733	);
		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, $data) >= 0
258	or return;	787	or return;
259		788
260	&$cb	789	unless (aio_stat "$filename.pst") {
261	}	790	(aio_load "$filename.pst", $av) >= 0
262
263	sub inject_global_event {
264	my $event = shift;
265
266	my $cb = $hook[$event]
267	or return;	791	or return;
268		792	$av = eval { (Storable::thaw $av)->{objs} };
269	List::Util::max map &$_, values %$cb
270	}
271
272	sub inject_command {
273	my ($name, $obj, $params) = @_;
274
275	for my $cmd (@{ $command{$name} }) {
276	$cmd->[1]->($obj, $params);
277	}	793	}
278		794
279	-1	795	warn sprintf "loading %s (%d)\n",
		796	$filename, length $data, scalar @{$av || []};#d#
		797	return ($data, $av);
280	}	798	}
		799
		800	#############################################################################
		801	# command handling &c
		802
		803	=item cf::register_command $name => \&callback($ob,$args);
		804
		805	Register a callback for execution when the client sends the user command
		806	$name.
		807
		808	=cut
281		809
282	sub register_command {	810	sub register_command {
283	my ($name, $time, $cb) = @_;	811	my ($name, $cb) = @_;
284		812
285	my $caller = caller;	813	my $caller = caller;
286	#warn "registering command '$name/$time' to '$caller'";	814	#warn "registering command '$name/$time' to '$caller'";
287		815
288	push @{ $command{$name} }, [$time, $cb, $caller];	816	push @{ $COMMAND{$name} }, [$caller, $cb];
289	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
290	}	817	}
		818
		819	=item cf::register_extcmd $name => \&callback($pl,$packet);
		820
		821	Register a callbackf ro execution when the client sends an extcmd packet.
		822
		823	If the callback returns something, it is sent back as if reply was being
		824	called.
		825
		826	=cut
291		827
292	sub register_extcmd {	828	sub register_extcmd {
293	my ($name, $cb) = @_;	829	my ($name, $cb) = @_;
294		830
295	my $caller = caller;	831	$EXTCMD{$name} = $cb;
296	#warn "registering extcmd '$name' to '$caller'";
297
298	$extcmd{$name} = [$cb, $caller];
299	}	832	}
300		833
301	sub register {	834	cf::player->attach (
302	my ($base, $pkg) = @_;	835	on_command => sub {
		836	my ($pl, $name, $params) = @_;
303		837
304	for my $idx (0 .. $#PLUGIN_EVENT) {	838	my $cb = $COMMAND{$name}
305	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {	839	or return;
306	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";	840
307	$hook[$idx]{$base} = $ref;	841	for my $cmd (@$cb) {
		842	$cmd->[1]->($pl->ob, $params);
308	}	843	}
		844
		845	cf::override;
309	}	846	},
310	}	847	on_extcmd => sub {
		848	my ($pl, $buf) = @_;
		849
		850	my $msg = eval { from_json $buf };
		851
		852	if (ref $msg) {
		853	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		854	if (my %reply = $cb->($pl, $msg)) {
		855	$pl->ext_reply ($msg->{msgid}, %reply);
		856	}
		857	}
		858	} else {
		859	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		860	}
		861
		862	cf::override;
		863	},
		864	);
311		865
312	sub load_extension {	866	sub load_extension {
313	my ($path) = @_;	867	my ($path) = @_;
314		868
315	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	869	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
316	my $base = $1;	870	my $base = $1;
317	my $pkg = $1;	871	my $pkg = $1;
318	$pkg =~ s/[^[:word:]]/_/g;	872	$pkg =~ s/[^[:word:]]/_/g;
319	$pkg = "ext::$pkg";	873	$pkg = "ext::$pkg";
320		874
321	warn "loading '$path' into '$pkg'\n";	875	warn "... loading '$path' into '$pkg'\n";
322		876
323	open my $fh, "<:utf8", $path	877	open my $fh, "<:utf8", $path
324	or die "$path: $!";	878	or die "$path: $!";
325		879
326	my $source =	880	my $source =
327	"package $pkg; use strict; use utf8;\n"	881	"package $pkg; use strict; use utf8;\n"
328	. "#line 1 \"$path\"\n{\n"	882	. "#line 1 \"$path\"\n{\n"
329	. (do { local $/; <$fh> })	883	. (do { local $/; <$fh> })
330	. "\n};\n1";	884	. "\n};\n1";
331		885
332	eval $source	886	unless (eval $source) {
333	or die "$path: $@";	887	my $msg = $@ ? "$path: $@\n"
		888	: "extension disabled.\n";
		889	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		890	warn $@;
		891	warn "mandatory extension failed to load, exiting.\n";
		892	exit 1;
		893	}
		894	die $@;
		895	}
334		896
335	push @exts, $pkg;	897	push @EXTS, $pkg;
336	$ext_pkg{$base} = $pkg;
337
338	# no strict 'refs';
339	# @{"$pkg\::ISA"} = ext::;
340
341	register $base, $pkg;
342	}
343
344	sub unload_extension {
345	my ($pkg) = @_;
346
347	warn "removing extension $pkg\n";
348
349	# remove hooks
350	for my $idx (0 .. $#PLUGIN_EVENT) {
351	delete $hook[$idx]{$pkg};
352	}
353
354	# remove commands
355	for my $name (keys %command) {
356	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
357
358	if (@cb) {
359	$command{$name} = \@cb;
360	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
361	} else {
362	delete $command{$name};
363	delete $COMMAND{"$name\000"};
364	}
365	}
366
367	# remove extcmds
368	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
369	delete $extcmd{$name};
370	}
371
372	if (my $cb = $pkg->can ("unload")) {
373	eval {
374	$cb->($pkg);
375	1
376	} or warn "$pkg unloaded, but with errors: $@";
377	}
378
379	Symbol::delete_package $pkg;
380	}	898	}
381		899
382	sub load_extensions {	900	sub load_extensions {
383	my $LIBDIR = maps_directory "perl";
384
385	for my $ext (<$LIBDIR/*.ext>) {	901	for my $ext (<$LIBDIR/*.ext>) {
386	next unless -r $ext;	902	next unless -r $ext;
387	eval {	903	eval {
388	load_extension $ext;	904	load_extension $ext;
389	1	905	1
390	} or warn "$ext not loaded: $@";	906	} or warn "$ext not loaded: $@";
391	}	907	}
392	}	908	}
393		909
394	sub _perl_reload(&) {	910	#############################################################################
		911
		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($) {
395	my ($msg) = @_;	953	my ($login) = @_;
396		954
397	$msg->("reloading...");	955	$cf::PLAYER{$login}
		956	or cf::sync_job { !aio_stat $login }
		957	}
398		958
399	eval {	959	sub find($) {
400	# 1. cancel all watchers	960	return $cf::PLAYER{$_[0]} || do {
401	$_->cancel for Event::all_watchers;	961	my $login = $_[0];
402		962
403	# 2. unload all extensions	963	my $guard = cf::lock_acquire "user_find:$login";
404	for (@exts) {
405	$msg->("unloading <$_>");
406	unload_extension $_;
407	}
408		964
409	# 3. unload all modules loaded from $LIBDIR	965	$cf::PLAYER{$_[0]} || do {
410	while (my ($k, $v) = each %INC) {	966	my $pl = load_pl path $login
411	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	967	or return;
412		968	$cf::PLAYER{$login} = $pl
413	$msg->("removing <$k>");
414	delete $INC{$k};
415
416	$k =~ s/\.pm$//;
417	$k =~ s/\//::/g;
418
419	if (my $cb = $k->can ("unload_module")) {
420	$cb->();
421	}
422
423	Symbol::delete_package $k;
424	}
425
426	# 4. get rid of safe::, as good as possible
427	Symbol::delete_package "safe::$_"
428	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
429
430	# 5. remove register_script_function callbacks
431	# TODO
432		969	}
433	# 6. unload cf.pm "a bit"	970	}
434	delete $INC{"cf.pm"};	971	}
435		972
436	# don't, removes xs symbols, too,	973	sub save($) {
437	# and global variables created in xs	974	my ($pl) = @_;
438	#Symbol::delete_package __PACKAGE__;
439		975
440	# 7. reload cf.pm	976	return if $pl->{deny_save};
441	$msg->("reloading cf.pm");	977
442	require cf;	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 {
		1392	my ($map) = @_;
		1393
		1394	my @diag; # diagonal neighbours
		1395
		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	}
		1438	};
		1439
		1440	sub find_async {
		1441	my ($path, $origin) = @_;
		1442
		1443	$path = normalise $path, $origin && $origin->{path};
		1444
		1445	if (my $map = $cf::MAP{$path}) {
		1446	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1447	}
		1448
		1449	$MAP_PREFETCH{$path} = 0;
		1450	$MAP_PREFETCHER->ready;
		1451
		1452	()
		1453	}
		1454
		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;
443	};	1475	};
444	$msg->($@) if $@;
445		1476
446	$msg->("reloaded");	1477	if ($uniq) {
447	};	1478	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
448		1479	$self->_save_objects ($uniq, cf::IO_UNIQUES);
449	sub perl_reload() {
450	_perl_reload {
451	warn $_[0];
452	print "$_[0]\n";
453	};
454	}
455
456	register_command "perl-reload", 0, sub {
457	my ($who, $arg) = @_;
458
459	if ($who->flag (FLAG_WIZ)) {
460	_perl_reload {
461	warn $_[0];
462	$who->message ($_[0]);
463	};
464	}
465	};
466
467	#############################################################################
468	# utility functions
469
470	use JSON::Syck (); # TODO# replace by JSON::PC once working
471
472	sub from_json($) {
473	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
474	JSON::Syck::Load $_[0]
475	}
476
477	sub to_json($) {
478	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
479	JSON::Syck::Dump $_[0]
480	}
481
482	#############################################################################
483	# extcmd framework, basically convert ext <msg>
484	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
485
486	attach_to_players
487	on_extcmd => sub {
488	my ($pl, $buf) = @_;
489
490	my $msg = eval { from_json $buf };
491
492	if (ref $msg) {
493	if (my $cb = $extcmd{$msg->{msgtype}}) {
494	if (my %reply = $cb->[0]->($pl, $msg)) {
495	$pl->ext_reply ($msg->{msgid}, %reply);
496	}
497	}
498	} else {
499	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
500	}
501
502	cf::override;
503	},
504	;
505
506	#############################################################################
507	# load/save/clean perl data associated with a map
508
509	*cf::mapsupport::on_clean = sub {
510	my ($map) = @_;
511
512	my $path = $map->tmpname;
513	defined $path or return;
514
515	unlink "$path.cfperl";
516	};
517
518	*cf::mapsupport::on_swapin =
519	*cf::mapsupport::on_load = sub {
520	my ($map) = @_;
521
522	my $path = $map->tmpname;
523	$path = $map->path unless defined $path;
524
525	open my $fh, "<:raw", "$path.cfperl"
526	or return; # no perl data
527
528	my $data = Storable::thaw do { local $/; <$fh> };
529
530	$data->{version} <= 1
531	or return; # too new
532
533	$map->_set_obs ($data->{obs});
534	};
535
536	*cf::mapsupport::on_swapout = sub {
537	my ($map) = @_;
538
539	my $path = $map->tmpname;
540	$path = $map->path unless defined $path;
541
542	my $obs = $map->_get_obs;
543
544	if (defined $obs) {
545	open my $fh, ">:raw", "$path.cfperl"
546	or die "$path.cfperl: $!";
547
548	stat $path;
549
550	print $fh Storable::nfreeze {
551	size => (stat _)[7],
552	time => (stat _)[9],
553	version => 1,
554	obs => $obs,
555	};
556
557	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
558	} else {	1480	} else {
559	unlink "$path.cfperl";	1481	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
560	}
561	};
562
563	attach_to_maps prio => -10000, package => cf::mapsupport::;
564
565	#############################################################################
566	# load/save perl data associated with player->ob objects
567
568	sub all_objects(@) {
569	@_, map all_objects ($_->inv), @_
570	}
571
572	attach_to_players
573	on_load => sub {
574	my ($pl, $path) = @_;
575
576	for my $o (all_objects $pl->ob) {
577	if (my $value = $o->get_ob_key_value ("_perl_data")) {
578	$o->set_ob_key_value ("_perl_data");
579
580	%$o = %{ Storable::thaw pack "H*", $value };
581	}
582	}
583	},	1482	}
584	on_save => sub {	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 {
585	my ($pl, $path) = @_;	1521	my ($self, $new_path) = @_;
586		1522
587	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)	1523	normalise $new_path;
588	for grep %$_, all_objects $pl->ob;	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, $_;
589	},	1586	}
590	;
591		1587
592	#############################################################################	1588	\@paths
593	# core extensions - in perl
594
595	=item cf::player::exists $login
596
597	Returns true when the given account exists.
598
599	=cut
600
601	sub cf::player::exists($) {
602	cf::player::find $_[0]
603	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
604	}	1589	}
605		1590
		1591	package cf;
		1592
		1593	=back
		1594
		1595	=head3 cf::object
		1596
		1597	=cut
		1598
		1599	package cf::object;
		1600
		1601	=over 4
		1602
		1603	=item $ob->inv_recursive
		1604
		1605	Returns the inventory of the object _and_ their inventories, recursively.
		1606
		1607	=cut
		1608
		1609	sub inv_recursive_;
		1610	sub inv_recursive_ {
		1611	map { $_, inv_recursive_ $_->inv } @_
		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
		1625
606	=item $player->reply ($npc, $msg[, $flags])	1626	=item $player_object->reply ($npc, $msg[, $flags])
607		1627
608	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>
609	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
610	dialogue with the given NPC character.	1630	dialogue with the given NPC character.
611		1631
612	=cut	1632	=cut
613		1633
614	# rough implementation of a future "reply" method that works	1634	# rough implementation of a future "reply" method that works
615	# with dialog boxes.	1635	# with dialog boxes.
		1636	#TODO: the first argument must go, split into a $npc->reply_to ( method
616	sub cf::object::player::reply($$$;$) {	1637	sub cf::object::player::reply($$$;$) {
617	my ($self, $npc, $msg, $flags) = @_;	1638	my ($self, $npc, $msg, $flags) = @_;
618		1639
619	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1640	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
620		1641
…		…
624	$msg = $npc->name . " says: $msg" if $npc;	1645	$msg = $npc->name . " says: $msg" if $npc;
625	$self->message ($msg, $flags);	1646	$self->message ($msg, $flags);
626	}	1647	}
627	}	1648	}
628		1649
629	=item $player->ext_reply ($msgid, $msgtype, %msg)	1650	=item $player_object->may ("access")
630		1651
631	Sends an ext reply to the player.	1652	Returns wether the given player is authorized to access resource "access"
		1653	(e.g. "command_wizcast").
632		1654
633	=cut	1655	=cut
634		1656
635	sub cf::player::ext_reply($$$%) {	1657	sub cf::object::player::may {
		1658	my ($self, $access) = @_;
		1659
		1660	$self->flag (cf::FLAG_WIZ) ||
		1661	(ref $cf::CFG{"may_$access"}
		1662	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1663	: $cf::CFG{"may_$access"})
		1664	}
		1665
		1666	=item $player_object->enter_link
		1667
		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	$exit->msg (undef);
		1842	}
		1843	}
		1844
		1845	sub cf::object::player::enter_exit {
636	my ($self, $id, %msg) = @_;	1846	my ($self, $exit) = @_;
637		1847
638	$msg{msgid} = $id;	1848	return unless $self->type == cf::PLAYER;
639		1849
640	$self->send ("ext " . to_json \%msg);	1850	$self->enter_link;
641	}
642		1851
643	#############################################################################	1852	(async {
644	# map scripting support	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
		1975
		1976	=head2 SAFE SCRIPTING
		1977
		1978	Functions that provide a safe environment to compile and execute
		1979	snippets of perl code without them endangering the safety of the server
		1980	itself. Looping constructs, I/O operators and other built-in functionality
		1981	is not available in the safe scripting environment, and the number of
		1982	functions and methods that can be called is greatly reduced.
		1983
		1984	=cut
645		1985
646	our $safe = new Safe "safe";	1986	our $safe = new Safe "safe";
647	our $safe_hole = new Safe::Hole;	1987	our $safe_hole = new Safe::Hole;
648		1988
649	$SIG{FPE} = 'IGNORE';	1989	$SIG{FPE} = 'IGNORE';
650		1990
651	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1991	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
652		1992
653	# here we export the classes and methods available to script code	1993	# here we export the classes and methods available to script code
654		1994
		1995	=pod
		1996
		1997	The following fucntions and emthods are available within a safe environment:
		1998
		1999	cf::object contr pay_amount pay_player map
		2000	cf::object::player player
		2001	cf::player peaceful
		2002	cf::map trigger
		2003
		2004	=cut
		2005
655	for (	2006	for (
656	["cf::object" => qw(contr pay_amount pay_player)],	2007	["cf::object" => qw(contr pay_amount pay_player map)],
657	["cf::object::player" => qw(player)],	2008	["cf::object::player" => qw(player)],
658	["cf::player" => qw(peaceful)],	2009	["cf::player" => qw(peaceful)],
		2010	["cf::map" => qw(trigger)],
659	) {	2011	) {
660	no strict 'refs';	2012	no strict 'refs';
661	my ($pkg, @funs) = @$_;	2013	my ($pkg, @funs) = @$_;
662	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2014	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
663	for @funs;	2015	for @funs;
664	}	2016	}
		2017
		2018	=over 4
		2019
		2020	=item @retval = safe_eval $code, [var => value, ...]
		2021
		2022	Compiled and executes the given perl code snippet. additional var/value
		2023	pairs result in temporary local (my) scalar variables of the given name
		2024	that are available in the code snippet. Example:
		2025
		2026	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2027
		2028	=cut
665		2029
666	sub safe_eval($;@) {	2030	sub safe_eval($;@) {
667	my ($code, %vars) = @_;	2031	my ($code, %vars) = @_;
668		2032
669	my $qcode = $code;	2033	my $qcode = $code;
…		…
692	}	2056	}
693		2057
694	wantarray ? @res : $res[0]	2058	wantarray ? @res : $res[0]
695	}	2059	}
696		2060
		2061	=item cf::register_script_function $function => $cb
		2062
		2063	Register a function that can be called from within map/npc scripts. The
		2064	function should be reasonably secure and should be put into a package name
		2065	like the extension.
		2066
		2067	Example: register a function that gets called whenever a map script calls
		2068	C<rent::overview>, as used by the C<rent> extension.
		2069
		2070	cf::register_script_function "rent::overview" => sub {
		2071	...
		2072	};
		2073
		2074	=cut
		2075
697	sub register_script_function {	2076	sub register_script_function {
698	my ($fun, $cb) = @_;	2077	my ($fun, $cb) = @_;
699		2078
700	no strict 'refs';	2079	no strict 'refs';
701	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2080	*{"safe::$fun"} = $safe_hole->wrap ($cb);
702	}	2081	}
703		2082
		2083	=back
		2084
		2085	=cut
		2086
		2087	#############################################################################
		2088
		2089	=head2 EXTENSION DATABASE SUPPORT
		2090
		2091	Crossfire maintains a very simple database for extension use. It can
		2092	currently store anything that can be serialised using Storable, which
		2093	excludes objects.
		2094
		2095	The parameter C<$family> should best start with the name of the extension
		2096	using it, it should be unique.
		2097
		2098	=over 4
		2099
		2100	=item $hashref = cf::db_get $family
		2101
		2102	Return a hashref for use by the extension C<$family>, which can be
		2103	modified. After modifications, you have to call C<cf::db_dirty> or
		2104	C<cf::db_sync>.
		2105
		2106	=item $value = cf::db_get $family => $key
		2107
		2108	Returns a single value from the database
		2109
		2110	=item cf::db_put $family => $hashref
		2111
		2112	Stores the given family hashref into the database. Updates are delayed, if
		2113	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2114
		2115	=item cf::db_put $family => $key => $value
		2116
		2117	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2118	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2119
		2120	=item cf::db_dirty
		2121
		2122	Marks the database as dirty, to be updated at a later time.
		2123
		2124	=item cf::db_sync
		2125
		2126	Immediately write the database to disk I<if it is dirty>.
		2127
		2128	=cut
		2129
		2130	our $DB;
		2131
		2132	{
		2133	my $path = cf::localdir . "/database.pst";
		2134
		2135	sub db_load() {
		2136	$DB = stat $path ? Storable::retrieve $path : { };
		2137	}
		2138
		2139	my $pid;
		2140
		2141	sub db_save() {
		2142	waitpid $pid, 0 if $pid;
		2143	if (0 == ($pid = fork)) {
		2144	$DB->{_meta}{version} = 1;
		2145	Storable::nstore $DB, "$path~";
		2146	rename "$path~", $path;
		2147	cf::_exit 0 if defined $pid;
		2148	}
		2149	}
		2150
		2151	my $dirty;
		2152
		2153	sub db_sync() {
		2154	db_save if $dirty;
		2155	undef $dirty;
		2156	}
		2157
		2158	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2159	db_sync;
		2160	});
		2161
		2162	sub db_dirty() {
		2163	$dirty = 1;
		2164	$idle->start;
		2165	}
		2166
		2167	sub db_get($;$) {
		2168	@_ >= 2
		2169	? $DB->{$_[0]}{$_[1]}
		2170	: ($DB->{$_[0]} ||= { })
		2171	}
		2172
		2173	sub db_put($$;$) {
		2174	if (@_ >= 3) {
		2175	$DB->{$_[0]}{$_[1]} = $_[2];
		2176	} else {
		2177	$DB->{$_[0]} = $_[1];
		2178	}
		2179	db_dirty;
		2180	}
		2181
		2182	cf::global->attach (
		2183	prio => 10000,
		2184	on_cleanup => sub {
		2185	db_sync;
		2186	},
		2187	);
		2188	}
		2189
704	#############################################################################	2190	#############################################################################
705	# the server's main()	2191	# the server's main()
706		2192
		2193	sub cfg_load {
		2194	open my $fh, "<:utf8", cf::confdir . "/config"
		2195	or return;
		2196
		2197	local $/;
		2198	*CFG = YAML::Syck::Load <$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	}
		2212	}
		2213
707	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
		2221	cfg_load;
		2222	db_load;
		2223	load_extensions;
708	Event::loop;	2224	Event::loop;
709	}	2225	}
710		2226
711	#############################################################################	2227	#############################################################################
712	# initialisation	2228	# initialisation and cleanup
713		2229
714	register "<global>", __PACKAGE__;	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	$map->save;
		2265	}
		2266	warn "end emergency map save\n";
		2267	};
		2268
		2269	warn "leave emergency perl save\n";
		2270	}
		2271
		2272	sub reload() {
		2273	# can/must only be called in main
		2274	if ($Coro::current != $Coro::main) {
		2275	warn "can only reload from main coroutine\n";
		2276	return;
		2277	}
		2278
		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;
		2288
		2289	eval {
		2290	# if anything goes wrong in here, we should simply crash as we already saved
		2291
		2292	warn "cancel all watchers";
		2293	for (Event::all_watchers) {
		2294	$_->cancel if $_->data & WF_AUTOCANCEL;
		2295	}
		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
		2307	warn "unload/nuke all extensions";
		2308	for my $pkg (@EXTS) {
		2309	warn "... unloading $pkg";
		2310
		2311	if (my $cb = $pkg->can ("unload")) {
		2312	eval {
		2313	$cb->($pkg);
		2314	1
		2315	} or warn "$pkg unloaded, but with errors: $@";
		2316	}
		2317
		2318	warn "... nuking $pkg";
		2319	Symbol::delete_package $pkg;
		2320	}
		2321
		2322	warn "unload all perl modules loaded from $LIBDIR";
		2323	while (my ($k, $v) = each %INC) {
		2324	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2325
		2326	warn "removing <$k>";
		2327	delete $INC{$k};
		2328
		2329	$k =~ s/\.pm$//;
		2330	$k =~ s/\//::/g;
		2331
		2332	if (my $cb = $k->can ("unload_module")) {
		2333	$cb->();
		2334	}
		2335
		2336	Symbol::delete_package $k;
		2337	}
		2338
		2339	warn "get rid of safe::, as good as possible";
		2340	Symbol::delete_package "safe::$_"
		2341	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2342
		2343	warn "unload cf.pm \"a bit\"";
		2344	delete $INC{"cf.pm"};
		2345
		2346	# don't, removes xs symbols, too,
		2347	# and global variables created in xs
		2348	#Symbol::delete_package __PACKAGE__;
		2349
		2350	warn "reloading cf.pm";
		2351	require cf;
		2352	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2353
		2354	warn "load config and database again";
		2355	cf::cfg_load;
		2356	cf::db_load;
		2357
		2358	warn "load extensions";
		2359	cf::load_extensions;
		2360
		2361	warn "reattach attachments to objects/players";
		2362	_global_reattach;
		2363	warn "reattach attachments to maps";
		2364	reattach $_ for values %MAP;
		2365	};
		2366
		2367	if ($@) {
		2368	warn $@;
		2369	warn "error while reloading, exiting.";
		2370	exit 1;
		2371	}
		2372
		2373	warn "reloaded";
		2374	};
		2375
		2376	register_command "reload" => sub {
		2377	my ($who, $arg) = @_;
		2378
		2379	if ($who->flag (FLAG_WIZ)) {
		2380	$who->message ("start of reload.");
		2381	reload;
		2382	$who->message ("end of reload.");
		2383	}
		2384	};
715		2385
716	unshift @INC, $LIBDIR;	2386	unshift @INC, $LIBDIR;
717		2387
718	load_extensions;
719
720	$TICK_WATCHER = Event->timer (	2388	$TICK_WATCHER = Event->timer (
		2389	reentrant => 0,
721	prio => 1,	2390	prio => 0,
722	at => $NEXT_TICK || 1,	2391	at => $NEXT_TICK || $TICK,
		2392	data => WF_AUTOCANCEL,
723	cb => sub {	2393	cb => sub {
		2394	$NOW = Event::time;
		2395
724	cf::server_tick; # one server iteration	2396	cf::server_tick; # one server iteration
725		2397	$RUNTIME += $TICK;
726	my $NOW = Event::time;
727	$NEXT_TICK += $TICK;	2398	$NEXT_TICK += $TICK;
728		2399
		2400	$WAIT_FOR_TICK->broadcast;
		2401	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2402
729	# if we are delayed by four ticks, skip them all	2403	# if we are delayed by four ticks or more, skip them all
730	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2404	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
731		2405
732	$TICK_WATCHER->at ($NEXT_TICK);	2406	$TICK_WATCHER->at ($NEXT_TICK);
733	$TICK_WATCHER->start;	2407	$TICK_WATCHER->start;
734	},	2408	},
735	);	2409	);
736		2410
		2411	IO::AIO::max_poll_time $TICK * 0.2;
		2412
		2413	$AIO_POLL_WATCHER = Event->io (
		2414	fd => IO::AIO::poll_fileno,
		2415	poll => 'r',
		2416	prio => 5,
		2417	data => WF_AUTOCANCEL,
		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 }
		2434
737	1	2435	1
738		2436

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