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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.42 by root, Fri Aug 25 15:31:44 2006 UTC vs.
Revision 1.150 by root, Mon Jan 8 19:25:53 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 Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.32 ();
		23	use YAML::Syck ();
10	use Time::HiRes;	24	use Time::HiRes;
11	use Event;	25
12	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		27
14	use strict;	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
15		30
		31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
16	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
17	our @EVENT;	39	our @EVENT;
18	our @PLUGIN_EVENT;	40	our $LIBDIR = datadir . "/ext";
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";
22		41
23	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;	43	our $TICK_WATCHER;
25	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %PLAYER; # all users
		53	our %MAP; # all maps
		54	our $LINK_MAP; # the special {link} map
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO; # coroutines bound to extensions
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76	our $EMERGENCY_POSITION;
		77
		78	#############################################################################
		79
		80	=head2 GLOBAL VARIABLES
		81
		82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
		92
		93	=item $cf::LIBDIR
		94
		95	The perl library directory, where extensions and cf-specific modules can
		96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
		101
		102	=item $cf::TICK
		103
		104	The interval between server ticks, in seconds.
		105
		106	=item %cf::CFG
		107
		108	Configuration for the server, loaded from C</etc/crossfire/config>, or
		109	from wherever your confdir points to.
		110
		111	=back
		112
		113	=cut
26		114
27	BEGIN {	115	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
32	$msg .= "\n"	120	$msg .= "\n"
33	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
34		122
35	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	123	LOG llevError, $msg;
37	};	124	};
38	}	125	}
39		126
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
41		128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
42	# generate property mutators	129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
43	sub prop_gen {	130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
44	my ($prefix, $class) = @_;	131	@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';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@safe::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78		133
79	# we bless all objects into (empty) derived classes to force a method lookup	134	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	135	# 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)) {	136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
82	no strict 'refs';	143	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	145	}
85		146
86	$Event::DIED = sub {	147	$Event::DIED = sub {
…		…
88	};	149	};
89		150
90	my %ext_pkg;	151	my %ext_pkg;
91	my @exts;	152	my @exts;
92	my @hook;	153	my @hook;
93	my %command;	154
94	my %extcmd;	155	=head2 UTILITY FUNCTIONS
		156
		157	=over 4
		158
		159	=cut
		160
		161	use JSON::Syck (); # TODO# replace by JSON::PC once working
		162
		163	=item $ref = cf::from_json $json
		164
		165	Converts a JSON string into the corresponding perl data structure.
		166
		167	=cut
		168
		169	sub from_json($) {
		170	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		171	JSON::Syck::Load $_[0]
		172	}
		173
		174	=item $json = cf::to_json $ref
		175
		176	Converts a perl data structure into its JSON representation.
		177
		178	=cut
		179
		180	sub to_json($) {
		181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		182	JSON::Syck::Dump $_[0]
		183	}
		184
		185	=item cf::lock_wait $string
		186
		187	Wait until the given lock is available. See cf::lock_acquire.
		188
		189	=item my $lock = cf::lock_acquire $string
		190
		191	Wait until the given lock is available and then acquires it and returns
		192	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		193	for example when the coroutine gets canceled), the lock is automatically
		194	returned.
		195
		196	Lock names should begin with a unique identifier (for example, cf::map::find
		197	uses map_find and cf::map::load uses map_load).
		198
		199	=cut
		200
		201	our %LOCK;
		202
		203	sub lock_wait($) {
		204	my ($key) = @_;
		205
		206	# wait for lock, if any
		207	while ($LOCK{$key}) {
		208	push @{ $LOCK{$key} }, $Coro::current;
		209	Coro::schedule;
		210	}
		211	}
		212
		213	sub lock_acquire($) {
		214	my ($key) = @_;
		215
		216	# wait, to be sure we are not locked
		217	lock_wait $key;
		218
		219	$LOCK{$key} = [];
		220
		221	Coro::guard {
		222	# wake up all waiters, to be on the safe side
		223	$_->ready for @{ delete $LOCK{$key} };
		224	}
		225	}
		226
		227	sub freeze_mainloop {
		228	return unless $TICK_WATCHER->is_active;
		229
		230	my $guard = Coro::guard { $TICK_WATCHER->start };
		231	$TICK_WATCHER->stop;
		232	$guard
		233	}
		234
		235	=item cf::async { BLOCK }
		236
		237	Currently the same as Coro::async_pool, meaning you cannot use
		238	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		239	thing you are allowed to do is call C<prio> on it.
		240
		241	=cut
		242
		243	BEGIN { *async = \&Coro::async_pool }
		244
		245	=item cf::sync_job { BLOCK }
		246
		247	The design of crossfire+ requires that the main coro ($Coro::main) is
		248	always able to handle events or runnable, as crossfire+ is only partly
		249	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		250
		251	If it must be done, put the blocking parts into C<sync_job>. This will run
		252	the given BLOCK in another coroutine while waiting for the result. The
		253	server will be frozen during this time, so the block should either finish
		254	fast or be very important.
		255
		256	=cut
		257
		258	sub sync_job(&) {
		259	my ($job) = @_;
		260
		261	if ($Coro::current == $Coro::main) {
		262	# this is the main coro, too bad, we have to block
		263	# till the operation succeeds, freezing the server :/
		264
		265	# TODO: use suspend/resume instead
		266	# (but this is cancel-safe)
		267	my $freeze_guard = freeze_mainloop;
		268
		269	my $busy = 1;
		270	my @res;
		271
		272	(async {
		273	@res = eval { $job->() };
		274	warn $@ if $@;
		275	undef $busy;
		276	})->prio (Coro::PRIO_MAX);
		277
		278	while ($busy) {
		279	Coro::cede or Event::one_event;
		280	}
		281
		282	wantarray ? @res : $res[0]
		283	} else {
		284	# we are in another coroutine, how wonderful, everything just works
		285
		286	$job->()
		287	}
		288	}
		289
		290	=item $coro = cf::async_ext { BLOCK }
		291
		292	Like async, but this coro is automcatially being canceled when the
		293	extension calling this is being unloaded.
		294
		295	=cut
		296
		297	sub async_ext(&) {
		298	my $cb = shift;
		299
		300	my $coro = &Coro::async ($cb);
		301
		302	$coro->on_destroy (sub {
		303	delete $EXT_CORO{$coro+0};
		304	});
		305	$EXT_CORO{$coro+0} = $coro;
		306
		307	$coro
		308	}
		309
		310	sub write_runtime {
		311	my $runtime = cf::localdir . "/runtime";
		312
		313	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		314	or return;
		315
		316	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		317	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		318	and return;
		319
		320	aio_fsync $fh
		321	and return;
		322
		323	close $fh
		324	or return;
		325
		326	aio_rename "$runtime~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
		332	=back
		333
		334	=cut
95		335
96	#############################################################################	336	#############################################################################
97	# "new" plug-in system
98		337
99	=item cf::object::attach ... # NYI	338	package cf::path;
100		339
101	=item cf::attach_global ...	340	sub new {
		341	my ($class, $path, $base) = @_;
102		342
103	=item cf::attach_to_type ...	343	$path = $path->as_string if ref $path;
104		344
105	=item cf::attach_to_objects ...	345	my $self = bless { }, $class;
106		346
107	=item cf::attach_to_players ...	347	# {... are special paths that are not touched
		348	# ?xxx/... are special absolute paths
		349	# ?random/... random maps
		350	# /! non-realised random map exit
		351	# /... normal maps
		352	# ~/... per-player maps without a specific player (DO NOT USE)
		353	# ~user/... per-player map of a specific user
108		354
109	=item cf::attach_to_maps ...	355	if ($path =~ /^{/) {
		356	# fine as it is
		357	} elsif ($path =~ s{^\?random/}{}) {
		358	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		359	$self->{random} = cf::from_json $data;
		360	} else {
		361	if ($path =~ s{^~([^/]+)?}{}) {
		362	$self->{user_rel} = 1;
110		363
111	prio => $number, # lower is earlier	364	if (defined $1) {
112	on_xxx => \&cb,	365	$self->{user} = $1;
		366	} elsif ($base =~ m{^~([^/]+)/}) {
		367	$self->{user} = $1;
		368	} else {
		369	warn "cannot resolve user-relative path without user <$path,$base>\n";
		370	}
		371	} elsif ($path =~ /^\//) {
		372	# already absolute
		373	} else {
		374	$base =~ s{[^/]+/?$}{};
		375	return $class->new ("$base/$path");
		376	}
		377
		378	for ($path) {
		379	redo if s{/\.?/}{/};
		380	redo if s{/[^/]+/\.\./}{/};
		381	}
		382	}
		383
		384	$self->{path} = $path;
		385
		386	$self
		387	}
		388
		389	# the name / primary key / in-game path
		390	sub as_string {
		391	my ($self) = @_;
		392
		393	$self->{user_rel} ? "~$self->{user}$self->{path}"
		394	: $self->{random} ? "?random/$self->{path}"
		395	: $self->{path}
		396	}
		397
		398	# the displayed name, this is a one way mapping
		399	sub visible_name {
		400	my ($self) = @_;
		401
		402	# if (my $rmp = $self->{random}) {
		403	# # todo: be more intelligent about this
		404	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		405	# } else {
		406	$self->as_string
		407	# }
		408	}
		409
		410	# escape the /'s in the path
		411	sub _escaped_path {
		412	# ∕ is U+2215
		413	(my $path = $_[0]{path}) =~ s/\//∕/g;
		414	$path
		415	}
		416
		417	# the original (read-only) location
		418	sub load_path {
		419	my ($self) = @_;
		420
		421	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		422	}
		423
		424	# the temporary/swap location
		425	sub save_path {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		429	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		430	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		431	}
		432
		433	# the unique path, might be eq to save_path
		434	sub uniq_path {
		435	my ($self) = @_;
		436
		437	$self->{user_rel} || $self->{random}
		438	? undef
		439	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		440	}
		441
		442	# return random map parameters, or undef
		443	sub random_map_params {
		444	my ($self) = @_;
		445
		446	$self->{random}
		447	}
		448
		449	# this is somewhat ugly, but style maps do need special treatment
		450	sub is_style_map {
		451	$_[0]{path} =~ m{^/styles/}
		452	}
		453
		454	package cf;
		455
		456	#############################################################################
		457
		458	=head2 ATTACHABLE OBJECTS
		459
		460	Many objects in crossfire are so-called attachable objects. That means you can
		461	attach callbacks/event handlers (a collection of which is called an "attachment")
		462	to it. All such attachable objects support the following methods.
		463
		464	In the following description, CLASS can be any of C<global>, C<object>
		465	C<player>, C<client> or C<map> (i.e. the attachable objects in
		466	crossfire+).
		467
		468	=over 4
		469
		470	=item $attachable->attach ($attachment, key => $value...)
		471
		472	=item $attachable->detach ($attachment)
		473
		474	Attach/detach a pre-registered attachment to a specific object and give it
		475	the specified key/value pairs as arguments.
		476
		477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
		479
		480	$obj->attach (minesweeper => width => 10, height => 10);
		481
		482	=item $bool = $attachable->attached ($name)
		483
		484	Checks wether the named attachment is currently attached to the object.
		485
		486	=item cf::CLASS->attach ...
		487
		488	=item cf::CLASS->detach ...
		489
		490	Define an anonymous attachment and attach it to all objects of the given
		491	CLASS. See the next function for an explanation of its arguments.
		492
		493	You can attach to global events by using the C<cf::global> class.
		494
		495	Example, log all player logins:
		496
		497	cf::player->attach (
		498	on_login => sub {
		499	my ($pl) = @_;
		500	...
		501	},
		502	);
		503
		504	Example, attach to the jeweler skill:
		505
		506	cf::object->attach (
		507	type => cf::SKILL,
		508	subtype => cf::SK_JEWELER,
		509	on_use_skill => sub {
		510	my ($sk, $ob, $part, $dir, $msg) = @_;
		511	...
		512	},
		513	);
		514
		515	=item cf::CLASS::attachment $name, ...
		516
		517	Register an attachment by C<$name> through which attachable objects of the
		518	given CLASS can refer to this attachment.
		519
		520	Some classes such as crossfire maps and objects can specify attachments
		521	that are attached at load/instantiate time, thus the need for a name.
		522
		523	These calls expect any number of the following handler/hook descriptions:
		524
		525	=over 4
		526
		527	=item prio => $number
		528
		529	Set the priority for all following handlers/hooks (unless overwritten
		530	by another C<prio> setting). Lower priority handlers get executed
		531	earlier. The default priority is C<0>, and many built-in handlers are
		532	registered at priority C<-1000>, so lower priorities should not be used
		533	unless you know what you are doing.
		534
		535	=item type => $type
		536
		537	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		538	given type of objects only (the additional parameter C<subtype> can be
		539	used to further limit to the given subtype).
		540
		541	=item on_I<event> => \&cb
		542
		543	Call the given code reference whenever the named event happens (event is
		544	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		545	handlers are recognised generally depends on the type of object these
		546	handlers attach to).
		547
		548	See F<include/eventinc.h> for the full list of events supported, and their
		549	class.
		550
113	package => package::,	551	=item package => package::
		552
		553	Look for sub functions of the name C<< on_I<event> >> in the given
		554	package and register them. Only handlers for eevents supported by the
		555	object/class are recognised.
		556
		557	=back
		558
		559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
		561
		562	cf::object::attachment sockpuppet =>
		563	on_skill_attack => sub {
		564	my ($self, $victim) = @_;
		565	...
		566	}
		567	}
		568
		569	=item $attachable->valid
		570
		571	Just because you have a perl object does not mean that the corresponding
		572	C-level object still exists. If you try to access an object that has no
		573	valid C counterpart anymore you get an exception at runtime. This method
		574	can be used to test for existence of the C object part without causing an
		575	exception.
114		576
115	=cut	577	=cut
116		578
117	# the following variables are defined in .xs and must not be re-created	579	# the following variables are defined in .xs and must not be re-created
118	our @CB_GLOBAL = (); # registry for all global events	580	our @CB_GLOBAL = (); # registry for all global events
119	our @CB_OBJECT = ();	581	our @CB_ATTACHABLE = (); # registry for all attachables
		582	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
120	our @CB_PLAYER = ();	583	our @CB_PLAYER = ();
		584	our @CB_CLIENT = ();
121	our @CB_TYPE = (); # registry for type (cf-object class) based events	585	our @CB_TYPE = (); # registry for type (cf-object class) based events
122	our @CB_MAP = ();	586	our @CB_MAP = ();
123		587
		588	my %attachment;
		589
124	sub _attach_cb($\%$$$) {	590	sub _attach_cb($$$$) {
125	my ($registry, $undo, $event, $prio, $cb) = @_;	591	my ($registry, $event, $prio, $cb) = @_;
126		592
127	use sort 'stable';	593	use sort 'stable';
128		594
129	$cb = [$prio, $cb];	595	$cb = [$prio, $cb];
130		596
131	@{$registry->[$event]} = sort	597	@{$registry->[$event]} = sort
132	{ $a->[0] cmp $b->[0] }	598	{ $a->[0] cmp $b->[0] }
133	@{$registry->[$event] || []}, $cb;	599	@{$registry->[$event] || []}, $cb;
134
135	push @{$undo->{cb}}, [$event, $cb];
136	}	600	}
		601
		602	# hack
		603	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
137		604
138	# attach handles attaching event callbacks	605	# attach handles attaching event callbacks
139	# the only thing the caller has to do is pass the correct	606	# the only thing the caller has to do is pass the correct
140	# registry (== where the callback attaches to).	607	# registry (== where the callback attaches to).
141	sub _attach(\@$\@) {	608	sub _attach {
142	my ($registry, $klass, $arg) = @_;	609	my ($registry, $klass, @arg) = @_;
143		610
		611	my $object_type;
144	my $prio = 0;	612	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;	613	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
152		614
		615	#TODO: get rid of this hack
		616	if ($attachable_klass{$klass}) {
		617	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		618	}
		619
153	while (@$arg) {	620	while (@arg) {
154	my $type = shift @$arg;	621	my $type = shift @arg;
155		622
156	if ($type eq "prio") {	623	if ($type eq "prio") {
157	$prio = shift @$arg;	624	$prio = shift @arg;
		625
		626	} elsif ($type eq "type") {
		627	$object_type = shift @arg;
		628	$registry = $CB_TYPE[$object_type] ||= [];
		629
		630	} elsif ($type eq "subtype") {
		631	defined $object_type or Carp::croak "subtype specified without type";
		632	my $object_subtype = shift @arg;
		633	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
158		634
159	} elsif ($type eq "package") {	635	} elsif ($type eq "package") {
160	my $pkg = shift @$arg;	636	my $pkg = shift @arg;
161		637
162	while (my ($name, $id) = each %cb_id) {	638	while (my ($name, $id) = each %cb_id) {
163	if (my $cb = $pkg->can ($name)) {	639	if (my $cb = $pkg->can ($name)) {
164	_attach_cb $registry, %undo, $id, $prio, $cb;	640	_attach_cb $registry, $id, $prio, $cb;
165	}	641	}
166	}	642	}
167		643
168	} elsif (exists $cb_id{$type}) {	644	} elsif (exists $cb_id{$type}) {
169	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @$arg;	645	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
170		646
171	} elsif (ref $type) {	647	} elsif (ref $type) {
172	warn "attaching objects not supported, ignoring.\n";	648	warn "attaching objects not supported, ignoring.\n";
173		649
174	} else {	650	} else {
175	shift @$arg;	651	shift @arg;
176	warn "attach argument '$type' not supported, ignoring.\n";	652	warn "attach argument '$type' not supported, ignoring.\n";
177	}	653	}
178	}	654	}
179
180	\%undo
181	}	655	}
182		656
183	sub cf::object::attach {	657	sub _object_attach {
184	die;	658	my ($obj, $name, %arg) = @_;
185	}
186		659
187	sub attach_global {	660	return if exists $obj->{_attachment}{$name};
188	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
189	}
190		661
191	sub attach_to_type {	662	if (my $attach = $attachment{$name}) {
192	my $type = shift;	663	my $registry = $obj->registry;
193	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
194	}
195		664
196	sub attach_to_objects {	665	for (@$attach) {
197	_attach @CB_OBJECT, KLASS_OBJECT, @_	666	my ($klass, @attach) = @$_;
198	}	667	_attach $registry, $klass, @attach;
		668	}
199		669
200	sub attach_to_players {	670	$obj->{$name} = \%arg;
201	_attach @CB_PLAYER, KLASS_PLAYER, @_	671	} else {
202	}	672	warn "object uses attachment '$name' that is not available, postponing.\n";
		673	}
203		674
204	sub attach_to_maps {	675	$obj->{_attachment}{$name} = undef;
205	_attach @CB_MAP, KLASS_MAP, @_	676	}
		677
		678	sub cf::attachable::attach {
		679	if (ref $_[0]) {
		680	_object_attach @_;
		681	} else {
		682	_attach shift->_attach_registry, @_;
		683	}
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
		688	my ($obj, $name) = @_;
		689
		690	if (ref $obj) {
		691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	};
		697
		698	sub cf::attachable::attached {
		699	my ($obj, $name) = @_;
		700
		701	exists $obj->{_attachment}{$name}
		702	}
		703
		704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
		709
		710	sub cf::\L$klass\E::attachment {
		711	my \$name = shift;
		712
		713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
206	}	717	}
207		718
208	our $override;	719	our $override;
		720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
209		721
210	sub override() {	722	sub override {
211	$override = 1	723	$override = 1;
		724	@invoke_results = ();
212	}	725	}
213		726
214	sub invoke {	727	sub do_invoke {
215	my $event = shift;	728	my $event = shift;
216	my $callbacks = shift;	729	my $callbacks = shift;
217		730
		731	@invoke_results = ();
		732
218	local $override;	733	local $override;
219		734
220	for (@$callbacks) {	735	for (@$callbacks) {
221	eval { &{$_->[1]} };	736	eval { &{$_->[1]} };
222		737
223	if ($@) {	738	if ($@) {
224	warn "$@";	739	warn "$@";
225	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
226	override;	741	override;
227	}	742	}
228		743
229	return 1 if $override;	744	return 1 if $override;
230	}	745	}
231		746
232	0	747	0
233	}	748	}
234		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
		760	=back
		761
		762	=cut
		763
235	#############################################################################	764	#############################################################################
236	# old plug-in events	765	# object support
237		766
238	sub inject_event {	767	sub reattach {
239	my $extension = shift;	768	# basically do the same as instantiate, without calling instantiate
240	my $event_code = shift;	769	my ($obj) = @_;
241		770
242	my $cb = $hook[$event_code]{$extension}	771	my $registry = $obj->registry;
		772
		773	@$registry = ();
		774
		775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		776
		777	for my $name (keys %{ $obj->{_attachment} || {} }) {
		778	if (my $attach = $attachment{$name}) {
		779	for (@$attach) {
		780	my ($klass, @attach) = @$_;
		781	_attach $registry, $klass, @attach;
		782	}
		783	} else {
		784	warn "object uses attachment '$name' that is not available, postponing.\n";
		785	}
		786	}
		787	}
		788
		789	cf::attachable->attach (
		790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
		803	on_clone => sub {
		804	my ($src, $dst) = @_;
		805
		806	@{$dst->registry} = @{$src->registry};
		807
		808	%$dst = %$src;
		809
		810	%{$dst->{_attachment}} = %{$src->{_attachment}}
		811	if exists $src->{_attachment};
		812	},
		813	);
		814
		815	sub object_freezer_save {
		816	my ($filename, $rdata, $objs) = @_;
		817
		818	sync_job {
		819	if (length $$rdata) {
		820	warn sprintf "saving %s (%d,%d)\n",
		821	$filename, length $$rdata, scalar @$objs;
		822
		823	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		824	chmod SAVE_MODE, $fh;
		825	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		826	aio_fsync $fh;
		827	close $fh;
		828
		829	if (@$objs) {
		830	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		831	chmod SAVE_MODE, $fh;
		832	my $data = Storable::nfreeze { version => 1, objs => $objs };
		833	aio_write $fh, 0, (length $data), $data, 0;
		834	aio_fsync $fh;
		835	close $fh;
		836	aio_rename "$filename.pst~", "$filename.pst";
		837	}
		838	} else {
		839	aio_unlink "$filename.pst";
		840	}
		841
		842	aio_rename "$filename~", $filename;
		843	} else {
		844	warn "FATAL: $filename~: $!\n";
		845	}
		846	} else {
		847	aio_unlink $filename;
		848	aio_unlink "$filename.pst";
		849	}
		850	}
		851	}
		852
		853	sub object_freezer_as_string {
		854	my ($rdata, $objs) = @_;
		855
		856	use Data::Dumper;
		857
		858	$$rdata . Dumper $objs
		859	}
		860
		861	sub object_thawer_load {
		862	my ($filename) = @_;
		863
		864	my ($data, $av);
		865
		866	(aio_load $filename, $data) >= 0
243	or return;	867	or return;
244		868
245	&$cb	869	unless (aio_stat "$filename.pst") {
246	}	870	(aio_load "$filename.pst", $av) >= 0
247
248	sub inject_global_event {
249	my $event = shift;
250
251	my $cb = $hook[$event]
252	or return;	871	or return;
253		872	$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	}	873	}
263		874
264	-1	875	warn sprintf "loading %s (%d)\n",
		876	$filename, length $data, scalar @{$av || []};#d#
		877	return ($data, $av);
265	}	878	}
		879
		880	#############################################################################
		881	# command handling &c
		882
		883	=item cf::register_command $name => \&callback($ob,$args);
		884
		885	Register a callback for execution when the client sends the user command
		886	$name.
		887
		888	=cut
266		889
267	sub register_command {	890	sub register_command {
268	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
269		892
270	my $caller = caller;	893	my $caller = caller;
271	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
272		895
273	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
274	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
275	}	897	}
		898
		899	=item cf::register_extcmd $name => \&callback($pl,$packet);
		900
		901	Register a callbackf ro execution when the client sends an extcmd packet.
		902
		903	If the callback returns something, it is sent back as if reply was being
		904	called.
		905
		906	=cut
276		907
277	sub register_extcmd {	908	sub register_extcmd {
278	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
279		910
280	my $caller = caller;	911	my $caller = caller;
281	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
282		913
283	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
284	}	915	}
		916
		917	cf::player->attach (
		918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
		920
		921	my $cb = $COMMAND{$name}
		922	or return;
		923
		924	for my $cmd (@$cb) {
		925	$cmd->[1]->($pl->ob, $params);
		926	}
		927
		928	cf::override;
		929	},
		930	on_extcmd => sub {
		931	my ($pl, $buf) = @_;
		932
		933	my $msg = eval { from_json $buf };
		934
		935	if (ref $msg) {
		936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		937	if (my %reply = $cb->[0]->($pl, $msg)) {
		938	$pl->ext_reply ($msg->{msgid}, %reply);
		939	}
		940	}
		941	} else {
		942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		943	}
		944
		945	cf::override;
		946	},
		947	);
285		948
286	sub register {	949	sub register {
287	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
288		951
289	for my $idx (0 .. $#PLUGIN_EVENT) {	952	#TODO
290	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
291	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
292	$hook[$idx]{$base} = $ref;
293	}
294	}
295	}	953	}
296		954
297	sub load_extension {	955	sub load_extension {
298	my ($path) = @_;	956	my ($path) = @_;
299		957
…		…
313	. "#line 1 \"$path\"\n{\n"	971	. "#line 1 \"$path\"\n{\n"
314	. (do { local $/; <$fh> })	972	. (do { local $/; <$fh> })
315	. "\n};\n1";	973	. "\n};\n1";
316		974
317	eval $source	975	eval $source
318	or die "$path: $@";	976	or die $@ ? "$path: $@\n"
		977	: "extension disabled.\n";
319		978
320	push @exts, $pkg;	979	push @exts, $pkg;
321	$ext_pkg{$base} = $pkg;	980	$ext_pkg{$base} = $pkg;
322		981
323	# no strict 'refs';	982	# no strict 'refs';
…		…
330	my ($pkg) = @_;	989	my ($pkg) = @_;
331		990
332	warn "removing extension $pkg\n";	991	warn "removing extension $pkg\n";
333		992
334	# remove hooks	993	# remove hooks
		994	#TODO
335	for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
336	delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
337	}	997	# }
338		998
339	# remove commands	999	# remove commands
340	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
341	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
342		1002
343	if (@cb) {	1003	if (@cb) {
344	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
345	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
346	} else {	1005	} else {
347	delete $command{$name};
348	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
349	}	1007	}
350	}	1008	}
351		1009
352	# remove extcmds	1010	# remove extcmds
353	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
354	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
355	}	1013	}
356		1014
357	if (my $cb = $pkg->can ("on_unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
358	eval {	1016	eval {
359	$cb->($pkg);	1017	$cb->($pkg);
360	1	1018	1
361	} or warn "$pkg unloaded, but with errors: $@";	1019	} or warn "$pkg unloaded, but with errors: $@";
362	}	1020	}
363		1021
364	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
365	}	1023	}
366		1024
367	sub load_extensions {	1025	sub load_extensions {
368	my $LIBDIR = maps_directory "perl";
369
370	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
371	next unless -r $ext;	1027	next unless -r $ext;
372	eval {	1028	eval {
373	load_extension $ext;	1029	load_extension $ext;
374	1	1030	1
375	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
376	}	1032	}
377	}	1033	}
378		1034
379	sub _perl_reload(&) {
380	my ($msg) = @_;
381
382	$msg->("reloading...");
383
384	eval {
385	# 1. cancel all watchers
386	$_->cancel for Event::all_watchers;
387
388	# 2. unload all extensions
389	for (@exts) {
390	$msg->("unloading <$_>");
391	unload_extension $_;
392	}
393
394	# 3. unload all modules loaded from $LIBDIR
395	while (my ($k, $v) = each %INC) {
396	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
397
398	$msg->("removing <$k>");
399	delete $INC{$k};
400
401	$k =~ s/\.pm$//;
402	$k =~ s/\//::/g;
403
404	if (my $cb = $k->can ("unload_module")) {
405	$cb->();
406	}
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
418	# 6. unload cf.pm "a bit"
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	};
429	$msg->($@) if $@;
430
431	$msg->("reloaded");
432	};
433
434	sub perl_reload() {
435	_perl_reload {
436	warn $_[0];
437	print "$_[0]\n";
438	};
439	}
440
441	register_command "perl-reload", 0, sub {
442	my ($who, $arg) = @_;
443
444	if ($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 {
483	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
484	}
485
486	1
487	}
488
489	#############################################################################	1035	#############################################################################
490	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
491		1037
492	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
493	my ($map) = @_;	1039	my ($map) = @_;
494		1040
495	my $path = $map->tmpname;	1041	my $path = $map->tmpname;
496	defined $path or return;	1042	defined $path or return;
497		1043
498	unlink "$path.cfperl";	1044	unlink "$path.pst";
499	};	1045	};
500		1046
501	*cf::mapsupport::on_swapin =
502	*cf::mapsupport::on_load = sub {
503	my ($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 "$path.cfperl";
543	}
544	};
545
546	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
547		1048
548	#############################################################################	1049	#############################################################################
549	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
550		1051
551	sub all_objects(@) {	1052	sub all_objects(@) {
552	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
553	}	1054	}
554		1055
555	attach_to_players	1056	# TODO: compatibility cruft, remove when no longer needed
		1057	cf::player->attach (
556	on_load => sub {	1058	on_load => sub {
557	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
558		1060
559	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
560	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
562		1064
563	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
564	}	1066	}
565	}	1067	}
566	},	1068	},
567	on_save => sub {	1069	);
568	my ($pl, $path) = @_;
569
570	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
571	for grep %$_, all_objects $pl->ob;
572	},
573	;
574		1070
575	#############################################################################	1071	#############################################################################
576	# core extensions - in perl
577		1072
		1073	=head2 CORE EXTENSIONS
		1074
		1075	Functions and methods that extend core crossfire objects.
		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
		1083	=over 4
		1084
578	=item cf::player::exists $login	1085	=item cf::player::find $login
579		1086
580	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
581		1088
582	=cut	1089	=cut
583		1090
584	sub cf::player::exists($) {	1091	sub playerdir($) {
585	cf::player::find $_[0]	1092	cf::localdir
586	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	. "/"
		1094	. cf::playerdir
		1095	. "/"
		1096	. (ref $_[0] ? $_[0]->ob->name : $_[0])
587	}	1097	}
588		1098
		1099	sub path($) {
		1100	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1101
		1102	(playerdir $login) . "/$login.pl"
		1103	}
		1104
		1105	sub find_active($) {
		1106	$cf::PLAYER{$_[0]}
		1107	and $cf::PLAYER{$_[0]}->active
		1108	and $cf::PLAYER{$_[0]}
		1109	}
		1110
		1111	sub exists($) {
		1112	my ($login) = @_;
		1113
		1114	$cf::PLAYER{$login}
		1115	or cf::sync_job { !aio_stat $login }
		1116	}
		1117
		1118	sub find($) {
		1119	return $cf::PLAYER{$_[0]} || do {
		1120	my $login = $_[0];
		1121
		1122	my $guard = cf::lock_acquire "user_find:$login";
		1123
		1124	$cf::PLAYER{$login} ||= (load_pl path $login or return);
		1125	};
		1126	}
		1127
		1128	sub save($) {
		1129	my ($pl) = @_;
		1130
		1131	return if $pl->{deny_save};
		1132
		1133	my $path = path $pl;
		1134	my $guard = cf::lock_acquire "user_save:$path";
		1135
		1136	return if $pl->{deny_save};
		1137
		1138	Coro::AIO::aio_mkdir playerdir $pl, 0770;
		1139	$pl->{last_save} = $cf::RUNTIME;
		1140
		1141	$pl->save_pl ($path);
		1142	Coro::cede;
		1143	}
		1144
		1145	sub new($) {
		1146	my ($login) = @_;
		1147
		1148	my $self = create;
		1149
		1150	$self->ob->name ($login);
		1151	$self->{deny_save} = 1;
		1152
		1153	$cf::PLAYER{$login} = $self;
		1154
		1155	$self
		1156	}
		1157
		1158	sub quit_character {
		1159	my ($pl) = @_;
		1160
		1161	$pl->{deny_save} = 1;
		1162	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1163
		1164	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1165	$pl->deactivate;
		1166	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1167	$pl->ns->destroy if $pl->ns;
		1168
		1169	my $path = playerdir $pl;
		1170	my $temp = "$path~$cf::RUNTIME~deleting~";
		1171	Coro::AIO::aio_rename $path, $temp;
		1172	delete $cf::PLAYER{$pl->ob->name};
		1173	$pl->destroy;
		1174	IO::AIO::aio_rmtree $temp;
		1175	}
		1176
		1177	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1178
		1179	Sends an ext reply to the player.
		1180
		1181	=cut
		1182
		1183	sub ext_reply($$$%) {
		1184	my ($self, $id, %msg) = @_;
		1185
		1186	$msg{msgid} = $id;
		1187
		1188	$self->send ("ext " . cf::to_json \%msg);
		1189	}
		1190
		1191	package cf;
		1192
		1193	=back
		1194
		1195
		1196	=head3 cf::map
		1197
		1198	=over 4
		1199
		1200	=cut
		1201
		1202	package cf::map;
		1203
		1204	use Fcntl;
		1205	use Coro::AIO;
		1206
		1207	our $MAX_RESET = 3600;
		1208	our $DEFAULT_RESET = 3000;
		1209
		1210	sub generate_random_map {
		1211	my ($path, $rmp) = @_;
		1212
		1213	# mit "rum" bekleckern, nicht
		1214	cf::map::_create_random_map
		1215	$path,
		1216	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1217	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1218	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1219	$rmp->{exit_on_final_map},
		1220	$rmp->{xsize}, $rmp->{ysize},
		1221	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1222	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1223	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1224	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1225	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1226	(cf::region::find $rmp->{region})
		1227	}
		1228
		1229	# and all this just because we cannot iterate over
		1230	# all maps in C++...
		1231	sub change_all_map_light {
		1232	my ($change) = @_;
		1233
		1234	$_->change_map_light ($change)
		1235	for grep $_->outdoor, values %cf::MAP;
		1236	}
		1237
		1238	sub try_load_header($) {
		1239	my ($path) = @_;
		1240
		1241	utf8::encode $path;
		1242	aio_open $path, O_RDONLY, 0
		1243	or return;
		1244
		1245	my $map = cf::map::new
		1246	or return;
		1247
		1248	# for better error messages only, will be overwritten
		1249	$map->path ($path);
		1250
		1251	$map->load_header ($path)
		1252	or return;
		1253
		1254	$map->{load_path} = $path;
		1255
		1256	$map
		1257	}
		1258
		1259	sub find;
		1260	sub find {
		1261	my ($path, $origin) = @_;
		1262
		1263	#warn "find<$path,$origin>\n";#d#
		1264
		1265	$path = new cf::path $path, $origin && $origin->path;
		1266	my $key = $path->as_string;
		1267
		1268	cf::lock_wait "map_find:$key";
		1269
		1270	$cf::MAP{$key} || do {
		1271	my $guard = cf::lock_acquire "map_find:$key";
		1272
		1273	# do it the slow way
		1274	my $map = try_load_header $path->save_path;
		1275
		1276	Coro::cede;
		1277
		1278	if ($map) {
		1279	$map->last_access ((delete $map->{last_access})
		1280	|| $cf::RUNTIME); #d#
		1281	# safety
		1282	$map->{instantiate_time} = $cf::RUNTIME
		1283	if $map->{instantiate_time} > $cf::RUNTIME;
		1284	} else {
		1285	if (my $rmp = $path->random_map_params) {
		1286	$map = generate_random_map $key, $rmp;
		1287	} else {
		1288	$map = try_load_header $path->load_path;
		1289	}
		1290
		1291	$map or return;
		1292
		1293	$map->{load_original} = 1;
		1294	$map->{instantiate_time} = $cf::RUNTIME;
		1295	$map->last_access ($cf::RUNTIME);
		1296	$map->instantiate;
		1297
		1298	# per-player maps become, after loading, normal maps
		1299	$map->per_player (0) if $path->{user_rel};
		1300	}
		1301
		1302	$map->path ($key);
		1303	$map->{path} = $path;
		1304	$map->{last_save} = $cf::RUNTIME;
		1305
		1306	Coro::cede;
		1307
		1308	if ($map->should_reset) {
		1309	$map->reset;
		1310	undef $guard;
		1311	$map = find $path
		1312	or return;
		1313	}
		1314
		1315	$cf::MAP{$key} = $map
		1316	}
		1317	}
		1318
		1319	sub load {
		1320	my ($self) = @_;
		1321
		1322	my $path = $self->{path};
		1323	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1324
		1325	return if $self->in_memory != cf::MAP_SWAPPED;
		1326
		1327	$self->in_memory (cf::MAP_LOADING);
		1328
		1329	$self->alloc;
		1330	$self->load_objects ($self->{load_path}, 1)
		1331	or return;
		1332
		1333	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1334	if delete $self->{load_original};
		1335
		1336	if (my $uniq = $path->uniq_path) {
		1337	utf8::encode $uniq;
		1338	if (aio_open $uniq, O_RDONLY, 0) {
		1339	$self->clear_unique_items;
		1340	$self->load_objects ($uniq, 0);
		1341	}
		1342	}
		1343
		1344	Coro::cede;
		1345
		1346	# now do the right thing for maps
		1347	$self->link_multipart_objects;
		1348
		1349	if ($self->{path}->is_style_map) {
		1350	$self->{deny_save} = 1;
		1351	$self->{deny_reset} = 1;
		1352	} else {
		1353	$self->fix_auto_apply;
		1354	$self->decay_objects;
		1355	$self->update_buttons;
		1356	$self->set_darkness_map;
		1357	$self->difficulty ($self->estimate_difficulty)
		1358	unless $self->difficulty;
		1359	$self->activate;
		1360	}
		1361
		1362	Coro::cede;
		1363
		1364	$self->in_memory (cf::MAP_IN_MEMORY);
		1365	}
		1366
		1367	sub find_sync {
		1368	my ($path, $origin) = @_;
		1369
		1370	cf::sync_job { cf::map::find $path, $origin }
		1371	}
		1372
		1373	sub do_load_sync {
		1374	my ($map) = @_;
		1375
		1376	cf::sync_job { $map->load };
		1377	}
		1378
		1379	sub save {
		1380	my ($self) = @_;
		1381
		1382	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1383
		1384	$self->{last_save} = $cf::RUNTIME;
		1385
		1386	return unless $self->dirty;
		1387
		1388	my $save = $self->{path}->save_path; utf8::encode $save;
		1389	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1390
		1391	$self->{load_path} = $save;
		1392
		1393	return if $self->{deny_save};
		1394
		1395	local $self->{last_access} = $self->last_access;#d#
		1396
		1397	cf::async {
		1398	$_->contr->save for $self->players;
		1399	};
		1400
		1401	if ($uniq) {
		1402	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1403	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1404	} else {
		1405	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1406	}
		1407	}
		1408
		1409	sub swap_out {
		1410	my ($self) = @_;
		1411
		1412	# save first because save cedes
		1413	$self->save;
		1414
		1415	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1416
		1417	return if $self->players;
		1418	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1419	return if $self->{deny_save};
		1420
		1421	$self->clear;
		1422	$self->in_memory (cf::MAP_SWAPPED);
		1423	}
		1424
		1425	sub reset_at {
		1426	my ($self) = @_;
		1427
		1428	# TODO: safety, remove and allow resettable per-player maps
		1429	return 1e99 if $self->{path}{user_rel};
		1430	return 1e99 if $self->{deny_reset};
		1431
		1432	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1433	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1434
		1435	$time + $to
		1436	}
		1437
		1438	sub should_reset {
		1439	my ($self) = @_;
		1440
		1441	$self->reset_at <= $cf::RUNTIME
		1442	}
		1443
		1444	sub unlink_save {
		1445	my ($self) = @_;
		1446
		1447	utf8::encode (my $save = $self->{path}->save_path);
		1448	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1449	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1450	}
		1451
		1452	sub rename {
		1453	my ($self, $new_path) = @_;
		1454
		1455	$self->unlink_save;
		1456
		1457	delete $cf::MAP{$self->path};
		1458	$self->{path} = new cf::path $new_path;
		1459	$self->path ($self->{path}->as_string);
		1460	$cf::MAP{$self->path} = $self;
		1461
		1462	$self->save;
		1463	}
		1464
		1465	sub reset {
		1466	my ($self) = @_;
		1467
		1468	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1469
		1470	return if $self->players;
		1471	return if $self->{path}{user_rel};#d#
		1472
		1473	warn "resetting map ", $self->path;#d#
		1474
		1475	delete $cf::MAP{$self->path};
		1476
		1477	$_->clear_links_to ($self) for values %cf::MAP;
		1478
		1479	$self->unlink_save;
		1480	$self->destroy;
		1481	}
		1482
		1483	my $nuke_counter = "aaaa";
		1484
		1485	sub nuke {
		1486	my ($self) = @_;
		1487
		1488	$self->{deny_save} = 1;
		1489	$self->reset_timeout (1);
		1490	$self->rename ("{nuke}/" . ($nuke_counter++));
		1491	$self->reset; # polite request, might not happen
		1492	}
		1493
		1494	sub customise_for {
		1495	my ($map, $ob) = @_;
		1496
		1497	if ($map->per_player) {
		1498	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1499	}
		1500
		1501	$map
		1502	}
		1503
		1504	sub emergency_save {
		1505	my $freeze_guard = cf::freeze_mainloop;
		1506
		1507	warn "enter emergency perl save\n";
		1508
		1509	cf::sync_job {
		1510	warn "begin emergency player save\n";
		1511	$_->save for values %cf::PLAYER;
		1512	warn "end emergency player save\n";
		1513
		1514	warn "begin emergency map save\n";
		1515	$_->save for values %cf::MAP;
		1516	warn "end emergency map save\n";
		1517	};
		1518
		1519	warn "leave emergency perl save\n";
		1520	}
		1521
		1522	package cf;
		1523
		1524	=back
		1525
		1526
		1527	=head3 cf::object::player
		1528
		1529	=over 4
		1530
589	=item $player->reply ($npc, $msg[, $flags])	1531	=item $player_object->reply ($npc, $msg[, $flags])
590		1532
591	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1533	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	1534	can be C<undef>. Does the right thing when the player is currently in a
593	dialogue with the given NPC character.	1535	dialogue with the given NPC character.
594		1536
595	=cut	1537	=cut
596		1538
597	# rough implementation of a future "reply" method that works	1539	# rough implementation of a future "reply" method that works
598	# with dialog boxes.	1540	# with dialog boxes.
		1541	#TODO: the first argument must go, split into a $npc->reply_to ( method
599	sub cf::object::player::reply($$$;$) {	1542	sub cf::object::player::reply($$$;$) {
600	my ($self, $npc, $msg, $flags) = @_;	1543	my ($self, $npc, $msg, $flags) = @_;
601		1544
602	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1545	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
603		1546
…		…
607	$msg = $npc->name . " says: $msg" if $npc;	1550	$msg = $npc->name . " says: $msg" if $npc;
608	$self->message ($msg, $flags);	1551	$self->message ($msg, $flags);
609	}	1552	}
610	}	1553	}
611		1554
612	=item $player->ext_reply ($msgid, $msgtype, %msg)	1555	=item $player_object->may ("access")
613		1556
614	Sends an ext reply to the player.	1557	Returns wether the given player is authorized to access resource "access"
		1558	(e.g. "command_wizcast").
615		1559
616	=cut	1560	=cut
617		1561
618	sub cf::player::ext_reply($$$%) {	1562	sub cf::object::player::may {
		1563	my ($self, $access) = @_;
		1564
		1565	$self->flag (cf::FLAG_WIZ) ||
		1566	(ref $cf::CFG{"may_$access"}
		1567	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1568	: $cf::CFG{"may_$access"})
		1569	}
		1570
		1571	=item $player_object->enter_link
		1572
		1573	Freezes the player and moves him/her to a special map (C<{link}>).
		1574
		1575	The player should be reaosnably safe there for short amounts of time. You
		1576	I<MUST> call C<leave_link> as soon as possible, though.
		1577
		1578	=item $player_object->leave_link ($map, $x, $y)
		1579
		1580	Moves the player out of the specila link map onto the given map. If the
		1581	map is not valid (or omitted), the player will be moved back to the
		1582	location he/she was before the call to C<enter_link>, or, if that fails,
		1583	to the emergency map position.
		1584
		1585	Might block.
		1586
		1587	=cut
		1588
		1589	sub cf::object::player::enter_link {
		1590	my ($self) = @_;
		1591
		1592	$self->deactivate_recursive;
		1593
		1594	return if $self->map == $LINK_MAP;
		1595
		1596	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1597	if $self->map;
		1598
		1599	$self->enter_map ($LINK_MAP, 20, 20);
		1600	}
		1601
		1602	sub cf::object::player::leave_link {
		1603	my ($self, $map, $x, $y) = @_;
		1604
		1605	my $link_pos = delete $self->{_link_pos};
		1606
		1607	unless ($map) {
		1608	# restore original map position
		1609	($map, $x, $y) = @{ $link_pos || [] };
		1610	$map = cf::map::find $map;
		1611
		1612	unless ($map) {
		1613	($map, $x, $y) = @$EMERGENCY_POSITION;
		1614	$map = cf::map::find $map
		1615	or die "FATAL: cannot load emergency map\n";
		1616	}
		1617	}
		1618
		1619	($x, $y) = (-1, -1)
		1620	unless (defined $x) && (defined $y);
		1621
		1622	# use -1 or undef as default coordinates, not 0, 0
		1623	($x, $y) = ($map->enter_x, $map->enter_y)
		1624	if $x <=0 && $y <= 0;
		1625
		1626	$map->load;
		1627
		1628	return unless $self->contr->active;
		1629	$self->activate_recursive;
		1630	$self->enter_map ($map, $x, $y);
		1631	}
		1632
		1633	cf::player->attach (
		1634	on_logout => sub {
		1635	my ($pl) = @_;
		1636
		1637	# abort map switching before logout
		1638	if ($pl->ob->{_link_pos}) {
		1639	cf::sync_job {
		1640	$pl->ob->leave_link
		1641	};
		1642	}
		1643	},
		1644	on_login => sub {
		1645	my ($pl) = @_;
		1646
		1647	# try to abort aborted map switching on player login :)
		1648	# should happen only on crashes
		1649	if ($pl->ob->{_link_pos}) {
		1650	$pl->ob->enter_link;
		1651	(async {
		1652	# we need this sleep as the login has a concurrent enter_exit running
		1653	# and this sleep increases chances of the player not ending up in scorn
		1654	$pl->ob->reply (undef,
		1655	"There was an internal problem at your last logout, "
		1656	. "the server will try to bring you to your intended destination in a second.",
		1657	cf::NDI_RED);
		1658	Coro::Timer::sleep 1;
		1659	$pl->ob->leave_link;
		1660	})->prio (2);
		1661	}
		1662	},
		1663	);
		1664
		1665	=item $player_object->goto ($path, $x, $y)
		1666
		1667	=cut
		1668
		1669	sub cf::object::player::goto {
		1670	my ($self, $path, $x, $y) = @_;
		1671
		1672	$self->enter_link;
		1673
		1674	(async {
		1675	$path = new cf::path $path;
		1676
		1677	my $map = cf::map::find $path->as_string;
		1678	$map = $map->customise_for ($self) if $map;
		1679
		1680	# warn "entering ", $map->path, " at ($x, $y)\n"
		1681	# if $map;
		1682
		1683	$map or $map->cluck ("oy");#d#
		1684	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1685
		1686	$self->leave_link ($map, $x, $y);
		1687	})->prio (1);
		1688	}
		1689
		1690	=item $player_object->enter_exit ($exit_object)
		1691
		1692	=cut
		1693
		1694	sub parse_random_map_params {
		1695	my ($spec) = @_;
		1696
		1697	my $rmp = { # defaults
		1698	xsize => 10,
		1699	ysize => 10,
		1700	};
		1701
		1702	for (split /\n/, $spec) {
		1703	my ($k, $v) = split /\s+/, $_, 2;
		1704
		1705	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1706	}
		1707
		1708	$rmp
		1709	}
		1710
		1711	sub prepare_random_map {
		1712	my ($exit) = @_;
		1713
		1714	# all this does is basically replace the /! path by
		1715	# a new random map path (?random/...) with a seed
		1716	# that depends on the exit object
		1717
		1718	my $rmp = parse_random_map_params $exit->msg;
		1719
		1720	if ($exit->map) {
		1721	$rmp->{region} = $exit->map->region_name;
		1722	$rmp->{origin_map} = $exit->map->path;
		1723	$rmp->{origin_x} = $exit->x;
		1724	$rmp->{origin_y} = $exit->y;
		1725	}
		1726
		1727	$rmp->{random_seed} ||= $exit->random_seed;
		1728
		1729	my $data = cf::to_json $rmp;
		1730	my $md5 = Digest::MD5::md5_hex $data;
		1731
		1732	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1733	aio_write $fh, 0, (length $data), $data, 0;
		1734
		1735	$exit->slaying ("?random/$md5");
		1736	$exit->msg (undef);
		1737	}
		1738	}
		1739
		1740	sub cf::object::player::enter_exit {
619	my ($self, $id, %msg) = @_;	1741	my ($self, $exit) = @_;
620		1742
621	$msg{msgid} = $id;	1743	return unless $self->type == cf::PLAYER;
622		1744
623	$self->send ("ext " . to_json \%msg);	1745	$self->enter_link;
624	}
625		1746
626	#############################################################################	1747	(async {
627	# map scripting support	1748	$self->deactivate_recursive; # just to be sure
		1749	unless (eval {
		1750	prepare_random_map $exit
		1751	if $exit->slaying eq "/!";
		1752
		1753	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1754	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1755
		1756	1;
		1757	}) {
		1758	$self->message ("Something went wrong deep within the crossfire server. "
		1759	. "I'll try to bring you back to the map you were before. "
		1760	. "Please report this to the dungeon master",
		1761	cf::NDI_UNIQUE | cf::NDI_RED);
		1762
		1763	warn "ERROR in enter_exit: $@";
		1764	$self->leave_link;
		1765	}
		1766	})->prio (1);
		1767	}
		1768
		1769	=head3 cf::client
		1770
		1771	=over 4
		1772
		1773	=item $client->send_drawinfo ($text, $flags)
		1774
		1775	Sends a drawinfo packet to the client. Circumvents output buffering so
		1776	should not be used under normal circumstances.
		1777
		1778	=cut
		1779
		1780	sub cf::client::send_drawinfo {
		1781	my ($self, $text, $flags) = @_;
		1782
		1783	utf8::encode $text;
		1784	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1785	}
		1786
		1787
		1788	=item $success = $client->query ($flags, "text", \&cb)
		1789
		1790	Queues a query to the client, calling the given callback with
		1791	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1792	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1793
		1794	Queries can fail, so check the return code. Or don't, as queries will become
		1795	reliable at some point in the future.
		1796
		1797	=cut
		1798
		1799	sub cf::client::query {
		1800	my ($self, $flags, $text, $cb) = @_;
		1801
		1802	return unless $self->state == ST_PLAYING
		1803	|| $self->state == ST_SETUP
		1804	|| $self->state == ST_CUSTOM;
		1805
		1806	$self->state (ST_CUSTOM);
		1807
		1808	utf8::encode $text;
		1809	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1810
		1811	$self->send_packet ($self->{query_queue}[0][0])
		1812	if @{ $self->{query_queue} } == 1;
		1813	}
		1814
		1815	cf::client->attach (
		1816	on_reply => sub {
		1817	my ($ns, $msg) = @_;
		1818
		1819	# this weird shuffling is so that direct followup queries
		1820	# get handled first
		1821	my $queue = delete $ns->{query_queue}
		1822	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1823
		1824	(shift @$queue)->[1]->($msg);
		1825
		1826	push @{ $ns->{query_queue} }, @$queue;
		1827
		1828	if (@{ $ns->{query_queue} } == @$queue) {
		1829	if (@$queue) {
		1830	$ns->send_packet ($ns->{query_queue}[0][0]);
		1831	} else {
		1832	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1833	}
		1834	}
		1835	},
		1836	);
		1837
		1838	=item $client->async (\&cb)
		1839
		1840	Create a new coroutine, running the specified callback. The coroutine will
		1841	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1842	or loss of connection).
		1843
		1844	=cut
		1845
		1846	sub cf::client::async {
		1847	my ($self, $cb) = @_;
		1848
		1849	my $coro = &Coro::async ($cb);
		1850
		1851	$coro->on_destroy (sub {
		1852	delete $self->{_coro}{$coro+0};
		1853	});
		1854
		1855	$self->{_coro}{$coro+0} = $coro;
		1856
		1857	$coro
		1858	}
		1859
		1860	cf::client->attach (
		1861	on_destroy => sub {
		1862	my ($ns) = @_;
		1863
		1864	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1865	},
		1866	);
		1867
		1868	=back
		1869
		1870
		1871	=head2 SAFE SCRIPTING
		1872
		1873	Functions that provide a safe environment to compile and execute
		1874	snippets of perl code without them endangering the safety of the server
		1875	itself. Looping constructs, I/O operators and other built-in functionality
		1876	is not available in the safe scripting environment, and the number of
		1877	functions and methods that can be called is greatly reduced.
		1878
		1879	=cut
628		1880
629	our $safe = new Safe "safe";	1881	our $safe = new Safe "safe";
630	our $safe_hole = new Safe::Hole;	1882	our $safe_hole = new Safe::Hole;
631		1883
632	$SIG{FPE} = 'IGNORE';	1884	$SIG{FPE} = 'IGNORE';
633		1885
634	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1886	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
635		1887
636	# here we export the classes and methods available to script code	1888	# here we export the classes and methods available to script code
637		1889
		1890	=pod
		1891
		1892	The following fucntions and emthods are available within a safe environment:
		1893
		1894	cf::object contr pay_amount pay_player map
		1895	cf::object::player player
		1896	cf::player peaceful
		1897	cf::map trigger
		1898
		1899	=cut
		1900
638	for (	1901	for (
639	["cf::object" => qw(contr pay_amount pay_player)],	1902	["cf::object" => qw(contr pay_amount pay_player map)],
640	["cf::object::player" => qw(player)],	1903	["cf::object::player" => qw(player)],
641	["cf::player" => qw(peaceful)],	1904	["cf::player" => qw(peaceful)],
		1905	["cf::map" => qw(trigger)],
642	) {	1906	) {
643	no strict 'refs';	1907	no strict 'refs';
644	my ($pkg, @funs) = @$_;	1908	my ($pkg, @funs) = @$_;
645	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1909	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
646	for @funs;	1910	for @funs;
647	}	1911	}
		1912
		1913	=over 4
		1914
		1915	=item @retval = safe_eval $code, [var => value, ...]
		1916
		1917	Compiled and executes the given perl code snippet. additional var/value
		1918	pairs result in temporary local (my) scalar variables of the given name
		1919	that are available in the code snippet. Example:
		1920
		1921	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1922
		1923	=cut
648		1924
649	sub safe_eval($;@) {	1925	sub safe_eval($;@) {
650	my ($code, %vars) = @_;	1926	my ($code, %vars) = @_;
651		1927
652	my $qcode = $code;	1928	my $qcode = $code;
…		…
675	}	1951	}
676		1952
677	wantarray ? @res : $res[0]	1953	wantarray ? @res : $res[0]
678	}	1954	}
679		1955
		1956	=item cf::register_script_function $function => $cb
		1957
		1958	Register a function that can be called from within map/npc scripts. The
		1959	function should be reasonably secure and should be put into a package name
		1960	like the extension.
		1961
		1962	Example: register a function that gets called whenever a map script calls
		1963	C<rent::overview>, as used by the C<rent> extension.
		1964
		1965	cf::register_script_function "rent::overview" => sub {
		1966	...
		1967	};
		1968
		1969	=cut
		1970
680	sub register_script_function {	1971	sub register_script_function {
681	my ($fun, $cb) = @_;	1972	my ($fun, $cb) = @_;
682		1973
683	no strict 'refs';	1974	no strict 'refs';
684	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1975	*{"safe::$fun"} = $safe_hole->wrap ($cb);
685	}	1976	}
686		1977
		1978	=back
		1979
		1980	=cut
		1981
		1982	#############################################################################
		1983
		1984	=head2 EXTENSION DATABASE SUPPORT
		1985
		1986	Crossfire maintains a very simple database for extension use. It can
		1987	currently store anything that can be serialised using Storable, which
		1988	excludes objects.
		1989
		1990	The parameter C<$family> should best start with the name of the extension
		1991	using it, it should be unique.
		1992
		1993	=over 4
		1994
		1995	=item $hashref = cf::db_get $family
		1996
		1997	Return a hashref for use by the extension C<$family>, which can be
		1998	modified. After modifications, you have to call C<cf::db_dirty> or
		1999	C<cf::db_sync>.
		2000
		2001	=item $value = cf::db_get $family => $key
		2002
		2003	Returns a single value from the database
		2004
		2005	=item cf::db_put $family => $hashref
		2006
		2007	Stores the given family hashref into the database. Updates are delayed, if
		2008	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2009
		2010	=item cf::db_put $family => $key => $value
		2011
		2012	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2013	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2014
		2015	=item cf::db_dirty
		2016
		2017	Marks the database as dirty, to be updated at a later time.
		2018
		2019	=item cf::db_sync
		2020
		2021	Immediately write the database to disk I<if it is dirty>.
		2022
		2023	=cut
		2024
		2025	our $DB;
		2026
		2027	{
		2028	my $path = cf::localdir . "/database.pst";
		2029
		2030	sub db_load() {
		2031	$DB = stat $path ? Storable::retrieve $path : { };
		2032	}
		2033
		2034	my $pid;
		2035
		2036	sub db_save() {
		2037	waitpid $pid, 0 if $pid;
		2038	if (0 == ($pid = fork)) {
		2039	$DB->{_meta}{version} = 1;
		2040	Storable::nstore $DB, "$path~";
		2041	rename "$path~", $path;
		2042	cf::_exit 0 if defined $pid;
		2043	}
		2044	}
		2045
		2046	my $dirty;
		2047
		2048	sub db_sync() {
		2049	db_save if $dirty;
		2050	undef $dirty;
		2051	}
		2052
		2053	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2054	db_sync;
		2055	});
		2056
		2057	sub db_dirty() {
		2058	$dirty = 1;
		2059	$idle->start;
		2060	}
		2061
		2062	sub db_get($;$) {
		2063	@_ >= 2
		2064	? $DB->{$_[0]}{$_[1]}
		2065	: ($DB->{$_[0]} ||= { })
		2066	}
		2067
		2068	sub db_put($$;$) {
		2069	if (@_ >= 3) {
		2070	$DB->{$_[0]}{$_[1]} = $_[2];
		2071	} else {
		2072	$DB->{$_[0]} = $_[1];
		2073	}
		2074	db_dirty;
		2075	}
		2076
		2077	cf::global->attach (
		2078	prio => 10000,
		2079	on_cleanup => sub {
		2080	db_sync;
		2081	},
		2082	);
		2083	}
		2084
687	#############################################################################	2085	#############################################################################
688	# the server's main()	2086	# the server's main()
689		2087
		2088	sub cfg_load {
		2089	open my $fh, "<:utf8", cf::confdir . "/config"
		2090	or return;
		2091
		2092	local $/;
		2093	*CFG = YAML::Syck::Load <$fh>;
		2094
		2095	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2096
		2097	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2098	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2099
		2100	if (exists $CFG{mlockall}) {
		2101	eval {
		2102	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2103	and die "WARNING: m(un)lockall failed: $!\n";
		2104	};
		2105	warn $@ if $@;
		2106	}
		2107	}
		2108
690	sub main {	2109	sub main {
		2110	# we must not ever block the main coroutine
		2111	local $Coro::idle = sub {
		2112	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2113	async { Event::one_event };
		2114	};
		2115
		2116	cfg_load;
		2117	db_load;
		2118	load_extensions;
691	Event::loop;	2119	Event::loop;
692	}	2120	}
693		2121
694	#############################################################################	2122	#############################################################################
695	# initialisation	2123	# initialisation
696		2124
		2125	sub reload() {
		2126	# can/must only be called in main
		2127	if ($Coro::current != $Coro::main) {
		2128	warn "can only reload from main coroutine\n";
		2129	return;
		2130	}
		2131
		2132	warn "reloading...";
		2133
		2134	my $guard = freeze_mainloop;
		2135	cf::emergency_save;
		2136
		2137	eval {
		2138	# if anything goes wrong in here, we should simply crash as we already saved
		2139
		2140	# cancel all watchers
		2141	for (Event::all_watchers) {
		2142	$_->cancel if $_->data & WF_AUTOCANCEL;
		2143	}
		2144
		2145	# cancel all extension coros
		2146	$_->cancel for values %EXT_CORO;
		2147	%EXT_CORO = ();
		2148
		2149	# unload all extensions
		2150	for (@exts) {
		2151	warn "unloading <$_>";
		2152	unload_extension $_;
		2153	}
		2154
		2155	# unload all modules loaded from $LIBDIR
		2156	while (my ($k, $v) = each %INC) {
		2157	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2158
		2159	warn "removing <$k>";
		2160	delete $INC{$k};
		2161
		2162	$k =~ s/\.pm$//;
		2163	$k =~ s/\//::/g;
		2164
		2165	if (my $cb = $k->can ("unload_module")) {
		2166	$cb->();
		2167	}
		2168
		2169	Symbol::delete_package $k;
		2170	}
		2171
		2172	# sync database to disk
		2173	cf::db_sync;
		2174	IO::AIO::flush;
		2175
		2176	# get rid of safe::, as good as possible
		2177	Symbol::delete_package "safe::$_"
		2178	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2179
		2180	# remove register_script_function callbacks
		2181	# TODO
		2182
		2183	# unload cf.pm "a bit"
		2184	delete $INC{"cf.pm"};
		2185
		2186	# don't, removes xs symbols, too,
		2187	# and global variables created in xs
		2188	#Symbol::delete_package __PACKAGE__;
		2189
		2190	# reload cf.pm
		2191	warn "reloading cf.pm";
		2192	require cf;
		2193	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2194
		2195	# load config and database again
		2196	cf::cfg_load;
		2197	cf::db_load;
		2198
		2199	# load extensions
		2200	warn "load extensions";
		2201	cf::load_extensions;
		2202
		2203	# reattach attachments to objects
		2204	warn "reattach";
		2205	_global_reattach;
		2206	reattach $_ for values %MAP;
		2207	};
		2208
		2209	if ($@) {
		2210	warn $@;
		2211	warn "error while reloading, exiting.";
		2212	exit 1;
		2213	}
		2214
		2215	warn "reloaded successfully";
		2216	};
		2217
		2218	#############################################################################
		2219
		2220	unless ($LINK_MAP) {
		2221	$LINK_MAP = cf::map::new;
		2222
		2223	$LINK_MAP->width (41);
		2224	$LINK_MAP->height (41);
		2225	$LINK_MAP->alloc;
		2226	$LINK_MAP->path ("{link}");
		2227	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2228	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2229
		2230	# dirty hack because... archetypes are not yet loaded
		2231	Event->timer (
		2232	after => 10,
		2233	cb => sub {
		2234	$_[0]->w->cancel;
		2235
		2236	# provide some exits "home"
		2237	my $exit = cf::object::new "exit";
		2238
		2239	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2240	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2241	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2242
		2243	$LINK_MAP->insert ($exit->clone, 19, 19);
		2244	$LINK_MAP->insert ($exit->clone, 19, 20);
		2245	$LINK_MAP->insert ($exit->clone, 19, 21);
		2246	$LINK_MAP->insert ($exit->clone, 20, 19);
		2247	$LINK_MAP->insert ($exit->clone, 20, 21);
		2248	$LINK_MAP->insert ($exit->clone, 21, 19);
		2249	$LINK_MAP->insert ($exit->clone, 21, 20);
		2250	$LINK_MAP->insert ($exit->clone, 21, 21);
		2251
		2252	$exit->destroy;
		2253	});
		2254
		2255	$LINK_MAP->{deny_save} = 1;
		2256	$LINK_MAP->{deny_reset} = 1;
		2257
		2258	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2259	}
		2260
697	register "<global>", __PACKAGE__;	2261	register "<global>", __PACKAGE__;
698		2262
		2263	register_command "reload" => sub {
		2264	my ($who, $arg) = @_;
		2265
		2266	if ($who->flag (FLAG_WIZ)) {
		2267	$who->message ("start of reload.");
		2268	reload;
		2269	$who->message ("end of reload.");
		2270	}
		2271	};
		2272
699	unshift @INC, $LIBDIR;	2273	unshift @INC, $LIBDIR;
700		2274
701	load_extensions;
702
703	$TICK_WATCHER = Event->timer (	2275	$TICK_WATCHER = Event->timer (
		2276	reentrant => 0,
704	prio => 1,	2277	prio => 0,
705	at => $NEXT_TICK || 1,	2278	at => $NEXT_TICK || $TICK,
		2279	data => WF_AUTOCANCEL,
706	cb => sub {	2280	cb => sub {
707	cf::server_tick; # one server iteration	2281	cf::server_tick; # one server iteration
708		2282	$RUNTIME += $TICK;
709	my $NOW = Event::time;
710	$NEXT_TICK += $TICK;	2283	$NEXT_TICK += $TICK;
711		2284
712	# if we are delayed by four ticks, skip them all	2285	# if we are delayed by four ticks or more, skip them all
713	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2286	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
714		2287
715	$TICK_WATCHER->at ($NEXT_TICK);	2288	$TICK_WATCHER->at ($NEXT_TICK);
716	$TICK_WATCHER->start;	2289	$TICK_WATCHER->start;
717	},	2290	},
718	);	2291	);
719		2292
		2293	IO::AIO::max_poll_time $TICK * 0.2;
		2294
		2295	Event->io (
		2296	fd => IO::AIO::poll_fileno,
		2297	poll => 'r',
		2298	prio => 5,
		2299	data => WF_AUTOCANCEL,
		2300	cb => \&IO::AIO::poll_cb,
		2301	);
		2302
		2303	Event->timer (
		2304	data => WF_AUTOCANCEL,
		2305	after => 0,
		2306	interval => 10,
		2307	cb => sub {
		2308	(Coro::unblock_sub {
		2309	write_runtime
		2310	or warn "ERROR: unable to write runtime file: $!";
		2311	})->();
		2312	},
		2313	);
		2314
		2315	END { cf::emergency_save }
		2316
720	1	2317	1
721		2318

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