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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.53 by root, Tue Aug 29 13:11:58 2006 UTC vs.
Revision 1.114 by root, Mon Jan 1 16:00:10 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 2.31 ();
		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
16	_reload_1;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
17		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
18	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
19	our @EVENT;	39	our @EVENT;
20	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		41
24	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	43	our $TICK_WATCHER;
26	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 %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($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
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		78
		79	#############################################################################
		80
		81	=head2 GLOBAL VARIABLES
		82
		83	=over 4
		84
		85	=item $cf::UPTIME
		86
		87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
		93
		94	=item $cf::LIBDIR
		95
		96	The perl library directory, where extensions and cf-specific modules can
		97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
		102
		103	=item $cf::TICK
		104
		105	The interval between server ticks, in seconds.
		106
		107	=item %cf::CFG
		108
		109	Configuration for the server, loaded from C</etc/crossfire/config>, or
		110	from wherever your confdir points to.
		111
		112	=back
		113
		114	=cut
27		115
28	BEGIN {	116	BEGIN {
29	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
31	$msg .= "\n"	121	$msg .= "\n"
32	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
33		123
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
36	};	125	};
37	}	126	}
38		127
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	130	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	131	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	132	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		134
75	# we bless all objects into (empty) derived classes to force a method lookup	135	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	136	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
78	no strict 'refs';	144	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	146	}
81		147
82	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
84	};	150	};
85		151
86	my %ext_pkg;	152	my %ext_pkg;
87	my @exts;	153	my @exts;
88	my @hook;	154	my @hook;
89	my %command;
90	my %extcmd;
91		155
92	#############################################################################	156	=head2 UTILITY FUNCTIONS
93	# utility functions	157
		158	=over 4
		159
		160	=cut
94		161
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	162	use JSON::Syck (); # TODO# replace by JSON::PC once working
		163
		164	=item $ref = cf::from_json $json
		165
		166	Converts a JSON string into the corresponding perl data structure.
		167
		168	=cut
96		169
97	sub from_json($) {	170	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	171	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	172	JSON::Syck::Load $_[0]
100	}	173	}
101		174
		175	=item $json = cf::to_json $ref
		176
		177	Converts a perl data structure into its JSON representation.
		178
		179	=cut
		180
102	sub to_json($) {	181	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
105	}	184	}
106		185
		186	=item cf::sync_job { BLOCK }
		187
		188	The design of crossfire+ requires that the main coro ($Coro::main) is
		189	always able to handle events or runnable, as crossfire+ is only partly
		190	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		191
		192	If it must be done, put the blocking parts into C<sync_job>. This will run
		193	the given BLOCK in another coroutine while waiting for the result. The
		194	server will be frozen during this time, so the block should either finish
		195	fast or be very important.
		196
		197	=cut
		198
		199	sub sync_job(&) {
		200	my ($job) = @_;
		201
		202	if ($Coro::current == $Coro::main) {
		203	# this is the main coro, too bad, we have to block
		204	# till the operation succeeds, freezing the server :/
		205
		206	# TODO: use suspend/resume instead
		207	# (but this is cancel-safe)
		208	local $FREEZE = 1;
		209
		210	my $busy = 1;
		211	my @res;
		212
		213	(Coro::async {
		214	@res = eval { $job->() };
		215	warn $@ if $@;
		216	undef $busy;
		217	})->prio (Coro::PRIO_MAX);
		218
		219	while ($busy) {
		220	Coro::cede_notself;
		221	Event::one_event unless Coro::nready;
		222	}
		223
		224	wantarray ? @res : $res[0]
		225	} else {
		226	# we are in another coroutine, how wonderful, everything just works
		227
		228	$job->()
		229	}
		230	}
		231
		232	=item $coro = cf::coro { BLOCK }
		233
		234	Creates and returns a new coro. This coro is automcatially being canceled
		235	when the extension calling this is being unloaded.
		236
		237	=cut
		238
		239	sub coro(&) {
		240	my $cb = shift;
		241
		242	my $coro; $coro = async {
		243	eval {
		244	$cb->();
		245	};
		246	warn $@ if $@;
		247	};
		248
		249	$coro->on_destroy (sub {
		250	delete $EXT_CORO{$coro+0};
		251	});
		252	$EXT_CORO{$coro+0} = $coro;
		253
		254	$coro
		255	}
		256
		257	sub write_runtime {
		258	my $runtime = cf::localdir . "/runtime";
		259
		260	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		261	or return;
		262
		263	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		264	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		265	and return;
		266
		267	aio_fsync $fh
		268	and return;
		269
		270	close $fh
		271	or return;
		272
		273	aio_rename "$runtime~", $runtime
		274	and return;
		275
		276	1
		277	}
		278
		279	=back
		280
		281	=cut
		282
107	#############################################################################	283	#############################################################################
108	# "new" plug-in system
109		284
110	=item $object->attach ($attachment, key => $value...)	285	package cf::path;
111		286
112	=item $object->detach ($attachment)	287	sub new {
		288	my ($class, $path, $base) = @_;
113		289
114	Attach/detach a pre-registered attachment to an object.	290	$path = $path->as_string if ref $path;
115		291
116	=item $player->attach ($attachment, key => $value...)	292	my $self = bless { }, $class;
117		293
118	=item $player->detach ($attachment)	294	# {... are special paths that are not touched
		295	# ?xxx/... are special absolute paths
		296	# ?random/... random maps
		297	# /! non-realised random map exit
		298	# /... normal maps
		299	# ~/... per-player maps without a specific player (DO NOT USE)
		300	# ~user/... per-player map of a specific user
119		301
120	Attach/detach a pre-registered attachment to a player.	302	if ($path =~ /^{/) {
		303	# fine as it is
		304	} elsif ($path =~ s{^\?random/}{}) {
		305	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		306	$self->{random} = cf::from_json $data;
		307	} else {
		308	if ($path =~ s{^~([^/]+)?}{}) {
		309	$self->{user_rel} = 1;
121		310
		311	if (defined $1) {
		312	$self->{user} = $1;
		313	} elsif ($base =~ m{^~([^/]+)/}) {
		314	$self->{user} = $1;
		315	} else {
		316	warn "cannot resolve user-relative path without user <$path,$base>\n";
		317	}
		318	} elsif ($path =~ /^\//) {
		319	# already absolute
		320	} else {
		321	$base =~ s{[^/]+/?$}{};
		322	return $class->new ("$base/$path");
		323	}
		324
		325	for ($path) {
		326	redo if s{/\.?/}{/};
		327	redo if s{/[^/]+/\.\./}{/};
		328	}
		329	}
		330
		331	$self->{path} = $path;
		332
		333	$self
		334	}
		335
		336	# the name / primary key / in-game path
		337	sub as_string {
		338	my ($self) = @_;
		339
		340	$self->{user_rel} ? "~$self->{user}$self->{path}"
		341	: $self->{random} ? "?random/$self->{path}"
		342	: $self->{path}
		343	}
		344
		345	# the displayed name, this is a one way mapping
		346	sub visible_name {
		347	my ($self) = @_;
		348
		349	# if (my $rmp = $self->{random}) {
		350	# # todo: be more intelligent about this
		351	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		352	# } else {
		353	$self->as_string
		354	# }
		355	}
		356
		357	# escape the /'s in the path
		358	sub _escaped_path {
		359	# ∕ is U+2215
		360	(my $path = $_[0]{path}) =~ s/\//∕/g;
		361	$path
		362	}
		363
		364	# the original (read-only) location
		365	sub load_path {
		366	my ($self) = @_;
		367
		368	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		369	}
		370
		371	# the temporary/swap location
		372	sub save_path {
		373	my ($self) = @_;
		374
		375	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		376	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		377	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		378	}
		379
		380	# the unique path, might be eq to save_path
		381	sub uniq_path {
		382	my ($self) = @_;
		383
		384	$self->{user_rel} || $self->{random}
		385	? undef
		386	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		387	}
		388
		389	# return random map parameters, or undef
		390	sub random_map_params {
		391	my ($self) = @_;
		392
		393	$self->{random}
		394	}
		395
		396	# this is somewhat ugly, but style maps do need special treatment
		397	sub is_style_map {
		398	$_[0]{path} =~ m{^/styles/}
		399	}
		400
		401	package cf;
		402
		403	#############################################################################
		404
		405	=head2 ATTACHABLE OBJECTS
		406
		407	Many objects in crossfire are so-called attachable objects. That means you can
		408	attach callbacks/event handlers (a collection of which is called an "attachment")
		409	to it. All such attachable objects support the following methods.
		410
		411	In the following description, CLASS can be any of C<global>, C<object>
		412	C<player>, C<client> or C<map> (i.e. the attachable objects in
		413	crossfire+).
		414
		415	=over 4
		416
122	=item $map->attach ($attachment, key => $value...)	417	=item $attachable->attach ($attachment, key => $value...)
123		418
124	=item $map->detach ($attachment)	419	=item $attachable->detach ($attachment)
125		420
126	Attach/detach a pre-registered attachment to a map.	421	Attach/detach a pre-registered attachment to a specific object and give it
		422	the specified key/value pairs as arguments.
127		423
128	=item cf::attach_global ...	424	Example, attach a minesweeper attachment to the given object, making it a
		425	10x10 minesweeper game:
129		426
130	Attach handlers for global events.	427	$obj->attach (minesweeper => width => 10, height => 10);
131		428
132	This and all following C<attach_*>-functions expect any number of the	429	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	430
		431	Checks wether the named attachment is currently attached to the object.
		432
		433	=item cf::CLASS->attach ...
		434
		435	=item cf::CLASS->detach ...
		436
		437	Define an anonymous attachment and attach it to all objects of the given
		438	CLASS. See the next function for an explanation of its arguments.
		439
		440	You can attach to global events by using the C<cf::global> class.
		441
		442	Example, log all player logins:
		443
		444	cf::player->attach (
		445	on_login => sub {
		446	my ($pl) = @_;
		447	...
		448	},
		449	);
		450
		451	Example, attach to the jeweler skill:
		452
		453	cf::object->attach (
		454	type => cf::SKILL,
		455	subtype => cf::SK_JEWELER,
		456	on_use_skill => sub {
		457	my ($sk, $ob, $part, $dir, $msg) = @_;
		458	...
		459	},
		460	);
		461
		462	=item cf::CLASS::attachment $name, ...
		463
		464	Register an attachment by C<$name> through which attachable objects of the
		465	given CLASS can refer to this attachment.
		466
		467	Some classes such as crossfire maps and objects can specify attachments
		468	that are attached at load/instantiate time, thus the need for a name.
		469
		470	These calls expect any number of the following handler/hook descriptions:
134		471
135	=over 4	472	=over 4
136		473
137	=item prio => $number	474	=item prio => $number
138		475
…		…
140	by another C<prio> setting). Lower priority handlers get executed	477	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	478	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	479	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	480	unless you know what you are doing.
144		481
		482	=item type => $type
		483
		484	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		485	given type of objects only (the additional parameter C<subtype> can be
		486	used to further limit to the given subtype).
		487
145	=item on_I<event> => \&cb	488	=item on_I<event> => \&cb
146		489
147	Call the given code reference whenever the named event happens (event is	490	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	491	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	492	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	501	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	502	object/class are recognised.
160		503
161	=back	504	=back
162		505
163	=item cf::attach_to_type $object_type, $subtype, ...	506	Example, define an attachment called "sockpuppet" that calls the given
		507	event handler when a monster attacks:
164		508
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	509	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	510	on_skill_attack => sub {
167	type.	511	my ($self, $victim) = @_;
		512	...
		513	}
		514	}
168		515
169	=item cf::attach_to_objects ...	516	=item $attachable->valid
170		517
171	Attach handlers to all objects. Do not use this except for debugging or	518	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	519	C-level object still exists. If you try to access an object that has no
173	the game.	520	valid C counterpart anymore you get an exception at runtime. This method
174		521	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	522	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		523
193	=cut	524	=cut
194		525
195	# the following variables are defined in .xs and must not be re-created	526	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	527	our @CB_GLOBAL = (); # registry for all global events
		528	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	529	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	530	our @CB_PLAYER = ();
		531	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	532	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	533	our @CB_MAP = ();
201		534
202	my %attachment;	535	my %attachment;
203		536
204	sub _attach_cb($\%$$$) {	537	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	538	my ($registry, $event, $prio, $cb) = @_;
206		539
207	use sort 'stable';	540	use sort 'stable';
208		541
209	$cb = [$prio, $cb];	542	$cb = [$prio, $cb];
210		543
211	@{$registry->[$event]} = sort	544	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	545	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	546	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	547	}
		548
		549	# hack
		550	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		551
218	# attach handles attaching event callbacks	552	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	553	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	554	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	555	sub _attach {
222	my ($registry, $klass, @arg) = @_;	556	my ($registry, $klass, @arg) = @_;
223		557
		558	my $object_type;
224	my $prio = 0;	559	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	560	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		561
		562	#TODO: get rid of this hack
		563	if ($attachable_klass{$klass}) {
		564	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		565	}
232		566
233	while (@arg) {	567	while (@arg) {
234	my $type = shift @arg;	568	my $type = shift @arg;
235		569
236	if ($type eq "prio") {	570	if ($type eq "prio") {
237	$prio = shift @arg;	571	$prio = shift @arg;
238		572
		573	} elsif ($type eq "type") {
		574	$object_type = shift @arg;
		575	$registry = $CB_TYPE[$object_type] ||= [];
		576
		577	} elsif ($type eq "subtype") {
		578	defined $object_type or Carp::croak "subtype specified without type";
		579	my $object_subtype = shift @arg;
		580	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		581
239	} elsif ($type eq "package") {	582	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	583	my $pkg = shift @arg;
241		584
242	while (my ($name, $id) = each %cb_id) {	585	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	586	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	587	_attach_cb $registry, $id, $prio, $cb;
245	}	588	}
246	}	589	}
247		590
248	} elsif (exists $cb_id{$type}) {	591	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	592	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		593
251	} elsif (ref $type) {	594	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	595	warn "attaching objects not supported, ignoring.\n";
253		596
254	} else {	597	} else {
255	shift @arg;	598	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	599	warn "attach argument '$type' not supported, ignoring.\n";
257	}	600	}
258	}	601	}
259
260	\%undo
261	}	602	}
262		603
263	sub _attach_attachment {	604	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	605	my ($obj, $name, %arg) = @_;
265		606
266	my $res;	607	return if exists $obj->{_attachment}{$name};
267		608
268	if (my $attach = $attachment{$name}) {	609	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	610	my $registry = $obj->registry;
270		611
271	for (@$attach) {	612	for (@$attach) {
272	my ($klass, @attach) = @$_;	613	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	614	_attach $registry, $klass, @attach;
274	}	615	}
275		616
276	$obj->{$name} = \%arg;	617	$obj->{$name} = \%arg;
277	} else {	618	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	619	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	620	}
280		621
281	$obj->{_attachment}{$name} = undef;	622	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	623	}
286		624
287	sub cf::object::attach {	625	sub cf::attachable::attach {
288	my ($obj, $name, %arg) = @_;	626	if (ref $_[0]) {
		627	_object_attach @_;
		628	} else {
		629	_attach shift->_attach_registry, @_;
		630	}
		631	};
289		632
290	_attach_attachment $obj, $name, %arg;	633	# all those should be optimised
291	}
292
293	sub cf::player::attach {
294	my ($obj, $name, %arg) = @_;
295
296	_attach_attachment $obj, $name, %arg;
297	}
298
299	sub cf::map::attach {
300	my ($obj, $name, %arg) = @_;
301
302	_attach_attachment $obj, $name, %arg;
303	}
304
305	sub cf::object::detach {	634	sub cf::attachable::detach {
306	my ($obj, $name) = @_;	635	my ($obj, $name) = @_;
307	die;#d#	636
308	}	637	if (ref $obj) {
309	sub cf::player::detach {	638	delete $obj->{_attachment}{$name};
		639	reattach ($obj);
		640	} else {
		641	Carp::croak "cannot, currently, detach class attachments";
		642	}
		643	};
		644
		645	sub cf::attachable::attached {
310	my ($obj, $name) = @_;	646	my ($obj, $name) = @_;
311	die;#d#
312	}
313	sub cf::map::detach {
314	my ($obj, $name) = @_;
315	die;#d#
316	}
317		647
318	sub attach_global {	648	exists $obj->{_attachment}{$name}
319	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
320	}	649	}
321		650
322	sub attach_to_type {	651	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
323	my $type = shift;	652	eval "#line " . __LINE__ . " 'cf.pm'
324	my $subtype = shift;	653	sub cf::\L$klass\E::_attach_registry {
		654	(\\\@CB_$klass, KLASS_$klass)
		655	}
325		656
326	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_	657	sub cf::\L$klass\E::attachment {
327	}
328
329	sub attach_to_objects {
330	_attach @CB_OBJECT, KLASS_OBJECT, @_
331	}
332
333	sub attach_to_players {
334	_attach @CB_PLAYER, KLASS_PLAYER, @_
335	}
336
337	sub attach_to_maps {
338	_attach @CB_MAP, KLASS_MAP, @_
339	}
340
341	sub register_attachment {
342	my $name = shift;	658	my \$name = shift;
343		659
344	$attachment{$name} = [[KLASS_OBJECT, @_]];
345	}
346
347	sub register_map_attachment {
348	my $name = shift;
349
350	$attachment{$name} = [[KLASS_MAP, @_]];	660	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		661	}
		662	";
		663	die if $@;
351	}	664	}
352		665
353	our $override;	666	our $override;
354	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	667	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
355		668
…		…
369	for (@$callbacks) {	682	for (@$callbacks) {
370	eval { &{$_->[1]} };	683	eval { &{$_->[1]} };
371		684
372	if ($@) {	685	if ($@) {
373	warn "$@";	686	warn "$@";
374	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	687	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
375	override;	688	override;
376	}	689	}
377		690
378	return 1 if $override;	691	return 1 if $override;
379	}	692	}
380		693
381	0	694	0
382	}	695	}
		696
		697	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		698
		699	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		700
		701	Generate an object-specific event with the given arguments.
		702
		703	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		704	removed in future versions), and there is no public API to access override
		705	results (if you must, access C<@cf::invoke_results> directly).
		706
		707	=back
		708
		709	=cut
383		710
384	#############################################################################	711	#############################################################################
385	# object support	712	# object support
386		713
387	sub instantiate {
388	my ($obj, $data) = @_;
389
390	$data = from_json $data;
391
392	for (@$data) {
393	my ($name, $args) = @$_;
394
395	$obj->attach ($name, %{$args || {} });
396	}
397	}
398
399	# basically do the same as instantiate, without calling instantiate
400	sub reattach {	714	sub reattach {
		715	# basically do the same as instantiate, without calling instantiate
401	my ($obj) = @_;	716	my ($obj) = @_;
		717
402	my $registry = $obj->registry;	718	my $registry = $obj->registry;
403		719
404	@$registry = ();	720	@$registry = ();
405		721
406	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	722	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
407		723
408	for my $name (keys %{ $obj->{_attachment} || {} }) {	724	for my $name (keys %{ $obj->{_attachment} || {} }) {
409	if (my $attach = $attachment{$name}) {	725	if (my $attach = $attachment{$name}) {
410	for (@$attach) {	726	for (@$attach) {
411	my ($klass, @attach) = @$_;	727	my ($klass, @attach) = @$_;
412	_attach @$registry, $klass, @attach;	728	_attach $registry, $klass, @attach;
413	}	729	}
414	} else {	730	} else {
415	warn "object uses attachment '$name' that is not available, postponing.\n";	731	warn "object uses attachment '$name' that is not available, postponing.\n";
416	}	732	}
417	}	733	}
418	}	734	}
419		735
420	sub object_freezer_save {	736	cf::attachable->attach (
421	my ($filename, $objs) = @_;
422
423	if (@$objs) {
424	open my $fh, ">:raw", "$filename.pst~";
425	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
426	close $fh;
427	chmod SAVE_MODE, "$filename.pst~";
428	rename "$filename.pst~", "$filename.pst";
429	} else {
430	unlink "$filename.pst";
431	}
432
433	chmod SAVE_MODE, "$filename~";
434	rename "$filename~", $filename;
435	}
436
437	sub object_thawer_load {
438	my ($filename) = @_;
439
440	open my $fh, "<:raw:perlio", "$filename.pst"
441	or return;
442
443	eval { local $/; (Storable::thaw <$fh>)->{objs} }
444	}
445
446	attach_to_objects
447	prio => -1000000,	737	prio => -1000000,
		738	on_instantiate => sub {
		739	my ($obj, $data) = @_;
		740
		741	$data = from_json $data;
		742
		743	for (@$data) {
		744	my ($name, $args) = @$_;
		745
		746	$obj->attach ($name, %{$args || {} });
		747	}
		748	},
		749	on_reattach => \&reattach,
448	on_clone => sub {	750	on_clone => sub {
449	my ($src, $dst) = @_;	751	my ($src, $dst) = @_;
450		752
451	@{$dst->registry} = @{$src->registry};	753	@{$dst->registry} = @{$src->registry};
452		754
453	%$dst = %$src;	755	%$dst = %$src;
454		756
455	%{$dst->{_attachment}} = %{$src->{_attachment}}	757	%{$dst->{_attachment}} = %{$src->{_attachment}}
456	if exists $src->{_attachment};	758	if exists $src->{_attachment};
457	},	759	},
458	;	760	);
		761
		762	sub object_freezer_save {
		763	my ($filename, $rdata, $objs) = @_;
		764
		765	sync_job {
		766	if (length $$rdata) {
		767	warn sprintf "saving %s (%d,%d)\n",
		768	$filename, length $$rdata, scalar @$objs;
		769
		770	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		771	chmod SAVE_MODE, $fh;
		772	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		773	aio_fsync $fh;
		774	close $fh;
		775
		776	if (@$objs) {
		777	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		778	chmod SAVE_MODE, $fh;
		779	my $data = Storable::nfreeze { version => 1, objs => $objs };
		780	aio_write $fh, 0, (length $data), $data, 0;
		781	aio_fsync $fh;
		782	close $fh;
		783	aio_rename "$filename.pst~", "$filename.pst";
		784	}
		785	} else {
		786	aio_unlink "$filename.pst";
		787	}
		788
		789	aio_rename "$filename~", $filename;
		790	} else {
		791	warn "FATAL: $filename~: $!\n";
		792	}
		793	} else {
		794	aio_unlink $filename;
		795	aio_unlink "$filename.pst";
		796	}
		797	}
		798	}
		799
		800	sub object_freezer_as_string {
		801	my ($rdata, $objs) = @_;
		802
		803	use Data::Dumper;
		804
		805	$$rdata . Dumper $objs
		806	}
		807
		808	sub object_thawer_load {
		809	my ($filename) = @_;
		810
		811	my ($data, $av);
		812
		813	(aio_load $filename, $data) >= 0
		814	or return;
		815
		816	unless (aio_stat "$filename.pst") {
		817	(aio_load "$filename.pst", $av) >= 0
		818	or return;
		819	$av = eval { (Storable::thaw $av)->{objs} };
		820	}
		821
		822	return ($data, $av);
		823	}
459		824
460	#############################################################################	825	#############################################################################
461	# old plug-in events	826	# command handling &c
462		827
463	sub inject_event {	828	=item cf::register_command $name => \&callback($ob,$args);
464	my $extension = shift;
465	my $event_code = shift;
466		829
467	my $cb = $hook[$event_code]{$extension}	830	Register a callback for execution when the client sends the user command
468	or return;	831	$name.
469		832
470	&$cb	833	=cut
471	}
472
473	sub inject_global_event {
474	my $event = shift;
475
476	my $cb = $hook[$event]
477	or return;
478
479	List::Util::max map &$_, values %$cb
480	}
481
482	sub inject_command {
483	my ($name, $obj, $params) = @_;
484
485	for my $cmd (@{ $command{$name} }) {
486	$cmd->[1]->($obj, $params);
487	}
488
489	-1
490	}
491		834
492	sub register_command {	835	sub register_command {
493	my ($name, $time, $cb) = @_;	836	my ($name, $cb) = @_;
494		837
495	my $caller = caller;	838	my $caller = caller;
496	#warn "registering command '$name/$time' to '$caller'";	839	#warn "registering command '$name/$time' to '$caller'";
497		840
498	push @{ $command{$name} }, [$time, $cb, $caller];	841	push @{ $COMMAND{$name} }, [$caller, $cb];
499	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
500	}	842	}
		843
		844	=item cf::register_extcmd $name => \&callback($pl,$packet);
		845
		846	Register a callbackf ro execution when the client sends an extcmd packet.
		847
		848	If the callback returns something, it is sent back as if reply was being
		849	called.
		850
		851	=cut
501		852
502	sub register_extcmd {	853	sub register_extcmd {
503	my ($name, $cb) = @_;	854	my ($name, $cb) = @_;
504		855
505	my $caller = caller;	856	my $caller = caller;
506	#warn "registering extcmd '$name' to '$caller'";	857	#warn "registering extcmd '$name' to '$caller'";
507		858
508	$extcmd{$name} = [$cb, $caller];	859	$EXTCMD{$name} = [$cb, $caller];
509	}	860	}
		861
		862	cf::player->attach (
		863	on_command => sub {
		864	my ($pl, $name, $params) = @_;
		865
		866	my $cb = $COMMAND{$name}
		867	or return;
		868
		869	for my $cmd (@$cb) {
		870	$cmd->[1]->($pl->ob, $params);
		871	}
		872
		873	cf::override;
		874	},
		875	on_extcmd => sub {
		876	my ($pl, $buf) = @_;
		877
		878	my $msg = eval { from_json $buf };
		879
		880	if (ref $msg) {
		881	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		882	if (my %reply = $cb->[0]->($pl, $msg)) {
		883	$pl->ext_reply ($msg->{msgid}, %reply);
		884	}
		885	}
		886	} else {
		887	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		888	}
		889
		890	cf::override;
		891	},
		892	);
510		893
511	sub register {	894	sub register {
512	my ($base, $pkg) = @_;	895	my ($base, $pkg) = @_;
513		896
514	#TODO	897	#TODO
…		…
533	. "#line 1 \"$path\"\n{\n"	916	. "#line 1 \"$path\"\n{\n"
534	. (do { local $/; <$fh> })	917	. (do { local $/; <$fh> })
535	. "\n};\n1";	918	. "\n};\n1";
536		919
537	eval $source	920	eval $source
538	or die "$path: $@";	921	or die $@ ? "$path: $@\n"
		922	: "extension disabled.\n";
539		923
540	push @exts, $pkg;	924	push @exts, $pkg;
541	$ext_pkg{$base} = $pkg;	925	$ext_pkg{$base} = $pkg;
542		926
543	# no strict 'refs';	927	# no strict 'refs';
…		…
556	# for my $idx (0 .. $#PLUGIN_EVENT) {	940	# for my $idx (0 .. $#PLUGIN_EVENT) {
557	# delete $hook[$idx]{$pkg};	941	# delete $hook[$idx]{$pkg};
558	# }	942	# }
559		943
560	# remove commands	944	# remove commands
561	for my $name (keys %command) {	945	for my $name (keys %COMMAND) {
562	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	946	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
563		947
564	if (@cb) {	948	if (@cb) {
565	$command{$name} = \@cb;	949	$COMMAND{$name} = \@cb;
566	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
567	} else {	950	} else {
568	delete $command{$name};
569	delete $COMMAND{"$name\000"};	951	delete $COMMAND{$name};
570	}	952	}
571	}	953	}
572		954
573	# remove extcmds	955	# remove extcmds
574	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	956	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
575	delete $extcmd{$name};	957	delete $EXTCMD{$name};
576	}	958	}
577		959
578	if (my $cb = $pkg->can ("unload")) {	960	if (my $cb = $pkg->can ("unload")) {
579	eval {	961	eval {
580	$cb->($pkg);	962	$cb->($pkg);
…		…
584		966
585	Symbol::delete_package $pkg;	967	Symbol::delete_package $pkg;
586	}	968	}
587		969
588	sub load_extensions {	970	sub load_extensions {
589	my $LIBDIR = maps_directory "perl";
590
591	for my $ext (<$LIBDIR/*.ext>) {	971	for my $ext (<$LIBDIR/*.ext>) {
592	next unless -r $ext;	972	next unless -r $ext;
593	eval {	973	eval {
594	load_extension $ext;	974	load_extension $ext;
595	1	975	1
596	} or warn "$ext not loaded: $@";	976	} or warn "$ext not loaded: $@";
597	}	977	}
598	}	978	}
599		979
600	sub _perl_reload(&) {
601	my ($msg) = @_;
602
603	$msg->("reloading...");
604
605	eval {
606	# 1. cancel all watchers
607	$_->cancel for Event::all_watchers;
608
609	# 2. unload all extensions
610	for (@exts) {
611	$msg->("unloading <$_>");
612	unload_extension $_;
613	}
614
615	# 3. unload all modules loaded from $LIBDIR
616	while (my ($k, $v) = each %INC) {
617	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
618
619	$msg->("removing <$k>");
620	delete $INC{$k};
621
622	$k =~ s/\.pm$//;
623	$k =~ s/\//::/g;
624
625	if (my $cb = $k->can ("unload_module")) {
626	$cb->();
627	}
628
629	Symbol::delete_package $k;
630	}
631
632	# 4. get rid of safe::, as good as possible
633	Symbol::delete_package "safe::$_"
634	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
635
636	# 5. remove register_script_function callbacks
637	# TODO
638
639	# 6. unload cf.pm "a bit"
640	delete $INC{"cf.pm"};
641
642	# don't, removes xs symbols, too,
643	# and global variables created in xs
644	#Symbol::delete_package __PACKAGE__;
645
646	# 7. reload cf.pm
647	$msg->("reloading cf.pm");
648	require cf;
649	};
650	$msg->($@) if $@;
651
652	$msg->("reloaded");
653	};
654
655	sub perl_reload() {
656	_perl_reload {
657	warn $_[0];
658	print "$_[0]\n";
659	};
660	}
661
662	register_command "perl-reload", 0, sub {
663	my ($who, $arg) = @_;
664
665	if ($who->flag (FLAG_WIZ)) {
666	_perl_reload {
667	warn $_[0];
668	$who->message ($_[0]);
669	};
670	}
671	};
672
673	#############################################################################
674	# extcmd framework, basically convert ext <msg>
675	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
676
677	attach_to_players
678	on_extcmd => sub {
679	my ($pl, $buf) = @_;
680
681	my $msg = eval { from_json $buf };
682
683	if (ref $msg) {
684	if (my $cb = $extcmd{$msg->{msgtype}}) {
685	if (my %reply = $cb->[0]->($pl, $msg)) {
686	$pl->ext_reply ($msg->{msgid}, %reply);
687	}
688	}
689	} else {
690	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
691	}
692
693	cf::override;
694	},
695	;
696
697	#############################################################################	980	#############################################################################
698	# load/save/clean perl data associated with a map	981	# load/save/clean perl data associated with a map
699		982
700	*cf::mapsupport::on_clean = sub {	983	*cf::mapsupport::on_clean = sub {
701	my ($map) = @_;	984	my ($map) = @_;
…		…
704	defined $path or return;	987	defined $path or return;
705		988
706	unlink "$path.pst";	989	unlink "$path.pst";
707	};	990	};
708		991
709	# old style persistent data, TODO: remove #d#
710	*cf::mapsupport::on_swapin =
711	*cf::mapsupport::on_load = sub {
712	my ($map) = @_;
713
714	my $path = $map->tmpname;
715	$path = $map->path unless defined $path;
716
717	open my $fh, "<:raw", "$path.cfperl"
718	or return; # no perl data
719
720	my $data = Storable::thaw do { local $/; <$fh> };
721
722	$data->{version} <= 1
723	or return; # too new
724
725	$map->_set_obs ($data->{obs});
726	$map->invoke (EVENT_MAP_UPGRADE);
727	};
728
729	attach_to_maps prio => -10000, package => cf::mapsupport::;	992	cf::map->attach (prio => -10000, package => cf::mapsupport::);
730		993
731	#############################################################################	994	#############################################################################
732	# load/save perl data associated with player->ob objects	995	# load/save perl data associated with player->ob objects
733		996
734	sub all_objects(@) {	997	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_	998	@_, map all_objects ($_->inv), @_
736	}	999	}
737		1000
738	attach_to_players	1001	# TODO: compatibility cruft, remove when no longer needed
		1002	cf::player->attach (
739	on_load => sub {	1003	on_load => sub {
740	my ($pl, $path) = @_;	1004	my ($pl, $path) = @_;
741		1005
742	for my $o (all_objects $pl->ob) {	1006	for my $o (all_objects $pl->ob) {
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1007	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
745		1009
746	%$o = %{ Storable::thaw pack "H*", $value };	1010	%$o = %{ Storable::thaw pack "H*", $value };
747	}	1011	}
748	}	1012	}
749	},	1013	},
750	;	1014	);
751		1015
752	#############################################################################	1016	#############################################################################
753	# core extensions - in perl	1017
		1018	=head2 CORE EXTENSIONS
		1019
		1020	Functions and methods that extend core crossfire objects.
		1021
		1022	=head3 cf::player
		1023
		1024	=over 4
754		1025
755	=item cf::player::exists $login	1026	=item cf::player::exists $login
756		1027
757	Returns true when the given account exists.	1028	Returns true when the given account exists.
758		1029
…		…
761	sub cf::player::exists($) {	1032	sub cf::player::exists($) {
762	cf::player::find $_[0]	1033	cf::player::find $_[0]
763	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1034	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
764	}	1035	}
765		1036
		1037	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1038
		1039	Sends an ext reply to the player.
		1040
		1041	=cut
		1042
		1043	sub cf::player::ext_reply($$$%) {
		1044	my ($self, $id, %msg) = @_;
		1045
		1046	$msg{msgid} = $id;
		1047
		1048	$self->send ("ext " . to_json \%msg);
		1049	}
		1050
		1051	=back
		1052
		1053
		1054	=head3 cf::map
		1055
		1056	=over 4
		1057
		1058	=cut
		1059
		1060	package cf::map;
		1061
		1062	use Fcntl;
		1063	use Coro::AIO;
		1064
		1065	our $MAX_RESET = 7200;
		1066	our $DEFAULT_RESET = 3600;
		1067
		1068	sub generate_random_map {
		1069	my ($path, $rmp) = @_;
		1070
		1071	# mit "rum" bekleckern, nicht
		1072	cf::map::_create_random_map
		1073	$path,
		1074	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1075	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1076	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1077	$rmp->{exit_on_final_map},
		1078	$rmp->{xsize}, $rmp->{ysize},
		1079	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1080	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1081	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1082	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1083	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1084	(cf::region::find $rmp->{region})
		1085	}
		1086
		1087	# and all this just because we cannot iterate over
		1088	# all maps in C++...
		1089	sub change_all_map_light {
		1090	my ($change) = @_;
		1091
		1092	$_->change_map_light ($change) for values %cf::MAP;
		1093	}
		1094
		1095	sub try_load_header($) {
		1096	my ($path) = @_;
		1097
		1098	utf8::encode $path;
		1099	aio_open $path, O_RDONLY, 0
		1100	or return;
		1101
		1102	my $map = cf::map::new
		1103	or return;
		1104
		1105	$map->load_header ($path)
		1106	or return;
		1107
		1108	$map->{load_path} = $path;
		1109
		1110	$map
		1111	}
		1112
		1113	sub find_map {
		1114	my ($path, $origin) = @_;
		1115
		1116	#warn "find_map<$path,$origin>\n";#d#
		1117
		1118	$path = new cf::path $path, $origin && $origin->path;
		1119	my $key = $path->as_string;
		1120
		1121	$cf::MAP{$key} || do {
		1122	# do it the slow way
		1123	my $map = try_load_header $path->save_path;
		1124
		1125	if ($map) {
		1126	# safety
		1127	$map->{instantiate_time} = $cf::RUNTIME
		1128	if $map->{instantiate_time} > $cf::RUNTIME;
		1129	} else {
		1130	if (my $rmp = $path->random_map_params) {
		1131	$map = generate_random_map $key, $rmp;
		1132	} else {
		1133	$map = try_load_header $path->load_path;
		1134	}
		1135
		1136	$map or return;
		1137
		1138	$map->{load_original} = 1;
		1139	$map->{instantiate_time} = $cf::RUNTIME;
		1140	$map->instantiate;
		1141
		1142	# per-player maps become, after loading, normal maps
		1143	$map->per_player (0) if $path->{user_rel};
		1144	}
		1145
		1146	$map->path ($key);
		1147	$map->{path} = $path;
		1148	$map->last_access ($cf::RUNTIME);
		1149
		1150	if ($map->should_reset) {
		1151	$map->reset;
		1152	$map = find_map $path;
		1153	}
		1154
		1155	$cf::MAP{$key} = $map
		1156	}
		1157	}
		1158
		1159	sub load {
		1160	my ($self) = @_;
		1161
		1162	return if $self->in_memory != cf::MAP_SWAPPED;
		1163
		1164	$self->in_memory (cf::MAP_LOADING);
		1165
		1166	my $path = $self->{path};
		1167
		1168	$self->alloc;
		1169	$self->load_objects ($self->{load_path}, 1)
		1170	or return;
		1171
		1172	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1173	if delete $self->{load_original};
		1174
		1175	if (my $uniq = $path->uniq_path) {
		1176	utf8::encode $uniq;
		1177	if (aio_open $uniq, O_RDONLY, 0) {
		1178	$self->clear_unique_items;
		1179	$self->load_objects ($uniq, 0);
		1180	}
		1181	}
		1182
		1183	# now do the right thing for maps
		1184	$self->link_multipart_objects;
		1185
		1186	if ($self->{path}->is_style_map) {
		1187	$self->{deny_save} = 1;
		1188	$self->{deny_reset} = 1;
		1189	} else {
		1190	$self->fix_auto_apply;
		1191	$self->decay_objects;
		1192	$self->update_buttons;
		1193	$self->set_darkness_map;
		1194	$self->difficulty ($self->estimate_difficulty)
		1195	unless $self->difficulty;
		1196	$self->activate;
		1197	}
		1198
		1199	$self->in_memory (cf::MAP_IN_MEMORY);
		1200	}
		1201
		1202	sub load_map_sync {
		1203	my ($path, $origin) = @_;
		1204
		1205	#warn "load_map_sync<$path, $origin>\n";#d#
		1206
		1207	cf::sync_job {
		1208	my $map = cf::map::find_map $path, $origin
		1209	or return;
		1210	$map->load;
		1211	$map
		1212	}
		1213	}
		1214
		1215	sub save {
		1216	my ($self) = @_;
		1217
		1218	my $save = $self->{path}->save_path; utf8::encode $save;
		1219	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1220
		1221	$self->{last_save} = $cf::RUNTIME;
		1222
		1223	return unless $self->dirty;
		1224
		1225	$self->{load_path} = $save;
		1226
		1227	return if $self->{deny_save};
		1228
		1229	if ($uniq) {
		1230	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1231	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1232	} else {
		1233	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1234	}
		1235	}
		1236
		1237	sub swap_out {
		1238	my ($self) = @_;
		1239
		1240	return if $self->players;
		1241	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1242	return if $self->{deny_save};
		1243
		1244	$self->save;
		1245	$self->clear;
		1246	$self->in_memory (cf::MAP_SWAPPED);
		1247	}
		1248
		1249	sub reset_at {
		1250	my ($self) = @_;
		1251
		1252	# TODO: safety, remove and allow resettable per-player maps
		1253	return 1e99 if $self->{path}{user_rel};
		1254	return 1e99 if $self->{deny_reset};
		1255
		1256	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1257	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1258
		1259	$time + $to
		1260	}
		1261
		1262	sub should_reset {
		1263	my ($self) = @_;
		1264
		1265	$self->reset_at <= $cf::RUNTIME
		1266	}
		1267
		1268	sub unlink_save {
		1269	my ($self) = @_;
		1270
		1271	utf8::encode (my $save = $self->{path}->save_path);
		1272	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1273	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1274	}
		1275
		1276	sub rename {
		1277	my ($self, $new_path) = @_;
		1278
		1279	$self->unlink_save;
		1280
		1281	delete $cf::MAP{$self->path};
		1282	$self->{path} = new cf::path $new_path;
		1283	$self->path ($self->{path}->as_string);
		1284	$cf::MAP{$self->path} = $self;
		1285
		1286	$self->save;
		1287	}
		1288
		1289	sub reset {
		1290	my ($self) = @_;
		1291
		1292	return if $self->players;
		1293	return if $self->{path}{user_rel};#d#
		1294
		1295	warn "resetting map ", $self->path;#d#
		1296
		1297	delete $cf::MAP{$self->path};
		1298
		1299	$_->clear_links_to ($self) for values %cf::MAP;
		1300
		1301	$self->unlink_save;
		1302	$self->destroy;
		1303	}
		1304
		1305	my $nuke_counter = "aaaa";
		1306
		1307	sub nuke {
		1308	my ($self) = @_;
		1309
		1310	$self->{deny_save} = 1;
		1311	$self->reset_timeout (1);
		1312	$self->rename ("{nuke}/" . ($nuke_counter++));
		1313	$self->reset; # polite request, might not happen
		1314	}
		1315
		1316	sub customise_for {
		1317	my ($map, $ob) = @_;
		1318
		1319	if ($map->per_player) {
		1320	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1321	}
		1322
		1323	$map
		1324	}
		1325
		1326	sub emergency_save {
		1327	local $cf::FREEZE = 1;
		1328
		1329	warn "enter emergency map save\n";
		1330
		1331	cf::sync_job {
		1332	warn "begin emergency map save\n";
		1333	$_->save for values %cf::MAP;
		1334	};
		1335
		1336	warn "end emergency map save\n";
		1337	}
		1338
		1339	package cf;
		1340
		1341	=back
		1342
		1343
		1344	=head3 cf::object::player
		1345
		1346	=over 4
		1347
766	=item $player->reply ($npc, $msg[, $flags])	1348	=item $player_object->reply ($npc, $msg[, $flags])
767		1349
768	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1350	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
769	can be C<undef>. Does the right thing when the player is currently in a	1351	can be C<undef>. Does the right thing when the player is currently in a
770	dialogue with the given NPC character.	1352	dialogue with the given NPC character.
771		1353
772	=cut	1354	=cut
773		1355
774	# rough implementation of a future "reply" method that works	1356	# rough implementation of a future "reply" method that works
775	# with dialog boxes.	1357	# with dialog boxes.
		1358	#TODO: the first argument must go, split into a $npc->reply_to ( method
776	sub cf::object::player::reply($$$;$) {	1359	sub cf::object::player::reply($$$;$) {
777	my ($self, $npc, $msg, $flags) = @_;	1360	my ($self, $npc, $msg, $flags) = @_;
778		1361
779	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1362	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
780		1363
…		…
784	$msg = $npc->name . " says: $msg" if $npc;	1367	$msg = $npc->name . " says: $msg" if $npc;
785	$self->message ($msg, $flags);	1368	$self->message ($msg, $flags);
786	}	1369	}
787	}	1370	}
788		1371
789	=item $player->ext_reply ($msgid, $msgtype, %msg)	1372	=item $player_object->may ("access")
790		1373
791	Sends an ext reply to the player.	1374	Returns wether the given player is authorized to access resource "access"
		1375	(e.g. "command_wizcast").
792		1376
793	=cut	1377	=cut
794		1378
795	sub cf::player::ext_reply($$$%) {	1379	sub cf::object::player::may {
		1380	my ($self, $access) = @_;
		1381
		1382	$self->flag (cf::FLAG_WIZ) ||
		1383	(ref $cf::CFG{"may_$access"}
		1384	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1385	: $cf::CFG{"may_$access"})
		1386	}
		1387
		1388	sub cf::object::player::enter_link {
		1389	my ($self) = @_;
		1390
		1391	return if $self->map == $LINK_MAP;
		1392
		1393	$self->{_link_pos} = [$self->map->{path}, $self->x, $self->y]
		1394	if $self->map;
		1395
		1396	$self->enter_map ($LINK_MAP, 20, 20);
		1397	$self->deactivate_recursive;
		1398	}
		1399
		1400	sub cf::object::player::leave_link {
		1401	my ($self, $map, $x, $y) = @_;
		1402
		1403	my $link_pos = delete $self->{_link_pos};
		1404
		1405	unless ($map) {
		1406	$self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1407
		1408	# restore original map position
		1409	($map, $x, $y) = @{ $link_pos || [] };
		1410	$map = cf::map::find_map $map;
		1411
		1412	unless ($map) {
		1413	($map, $x, $y) = @$EMERGENCY_POSITION;
		1414	$map = cf::map::find_map $map
		1415	or die "FATAL: cannot load emergency map\n";
		1416	}
		1417	}
		1418
		1419	($x, $y) = (-1, -1)
		1420	unless (defined $x) && (defined $y);
		1421
		1422	# use -1 or undef as default coordinates, not 0, 0
		1423	($x, $y) = ($map->enter_x, $map->enter_y)
		1424	if $x <=0 && $y <= 0;
		1425
		1426	$map->load;
		1427
		1428	$self->activate_recursive;
		1429	$self->enter_map ($map, $x, $y);
		1430	}
		1431
		1432	=item $player_object->goto_map ($map, $x, $y)
		1433
		1434	=cut
		1435
		1436	sub cf::object::player::goto_map {
		1437	my ($self, $path, $x, $y) = @_;
		1438
		1439	$self->enter_link;
		1440
		1441	(Coro::async {
		1442	$path = new cf::path $path;
		1443
		1444	my $map = cf::map::find_map $path->as_string;
		1445	$map = $map->customise_for ($self) if $map;
		1446
		1447	warn "entering ", $map->path, " at ($x, $y)\n"
		1448	if $map;
		1449
		1450	$self->leave_link ($map, $x, $y);
		1451	})->prio (1);
		1452	}
		1453
		1454	=item $player_object->enter_exit ($exit_object)
		1455
		1456	=cut
		1457
		1458	sub parse_random_map_params {
		1459	my ($spec) = @_;
		1460
		1461	my $rmp = { # defaults
		1462	xsize => 10,
		1463	ysize => 10,
		1464	};
		1465
		1466	for (split /\n/, $spec) {
		1467	my ($k, $v) = split /\s+/, $_, 2;
		1468
		1469	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1470	}
		1471
		1472	$rmp
		1473	}
		1474
		1475	sub prepare_random_map {
		1476	my ($exit) = @_;
		1477
		1478	# all this does is basically replace the /! path by
		1479	# a new random map path (?random/...) with a seed
		1480	# that depends on the exit object
		1481
		1482	my $rmp = parse_random_map_params $exit->msg;
		1483
		1484	if ($exit->map) {
		1485	$rmp->{region} = $exit->map->region_name;
		1486	$rmp->{origin_map} = $exit->map->path;
		1487	$rmp->{origin_x} = $exit->x;
		1488	$rmp->{origin_y} = $exit->y;
		1489	}
		1490
		1491	$rmp->{random_seed} ||= $exit->random_seed;
		1492
		1493	my $data = cf::to_json $rmp;
		1494	my $md5 = Digest::MD5::md5_hex $data;
		1495
		1496	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1497	aio_write $fh, 0, (length $data), $data, 0;
		1498
		1499	$exit->slaying ("?random/$md5");
		1500	$exit->msg (undef);
		1501	}
		1502	}
		1503
		1504	sub cf::object::player::enter_exit {
796	my ($self, $id, %msg) = @_;	1505	my ($self, $exit) = @_;
797		1506
798	$msg{msgid} = $id;	1507	return unless $self->type == cf::PLAYER;
799		1508
800	$self->send ("ext " . to_json \%msg);	1509	$self->enter_link;
801	}
802		1510
803	#############################################################################	1511	(Coro::async {
804	# map scripting support	1512	unless (eval {
		1513
		1514	prepare_random_map $exit
		1515	if $exit->slaying eq "/!";
		1516
		1517	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1518	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1519
		1520	1;
		1521	}) {
		1522	$self->message ("Something went wrong deep within the crossfire server. "
		1523	. "I'll try to bring you back to the map you were before. "
		1524	. "Please report this to the dungeon master",
		1525	cf::NDI_UNIQUE | cf::NDI_RED);
		1526
		1527	warn "ERROR in enter_exit: $@";
		1528	$self->leave_link;
		1529	}
		1530	})->prio (1);
		1531	}
		1532
		1533	=head3 cf::client
		1534
		1535	=over 4
		1536
		1537	=item $client->send_drawinfo ($text, $flags)
		1538
		1539	Sends a drawinfo packet to the client. Circumvents output buffering so
		1540	should not be used under normal circumstances.
		1541
		1542	=cut
		1543
		1544	sub cf::client::send_drawinfo {
		1545	my ($self, $text, $flags) = @_;
		1546
		1547	utf8::encode $text;
		1548	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1549	}
		1550
		1551
		1552	=item $success = $client->query ($flags, "text", \&cb)
		1553
		1554	Queues a query to the client, calling the given callback with
		1555	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1556	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1557
		1558	Queries can fail, so check the return code. Or don't, as queries will become
		1559	reliable at some point in the future.
		1560
		1561	=cut
		1562
		1563	sub cf::client::query {
		1564	my ($self, $flags, $text, $cb) = @_;
		1565
		1566	return unless $self->state == ST_PLAYING
		1567	|| $self->state == ST_SETUP
		1568	|| $self->state == ST_CUSTOM;
		1569
		1570	$self->state (ST_CUSTOM);
		1571
		1572	utf8::encode $text;
		1573	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1574
		1575	$self->send_packet ($self->{query_queue}[0][0])
		1576	if @{ $self->{query_queue} } == 1;
		1577	}
		1578
		1579	cf::client->attach (
		1580	on_reply => sub {
		1581	my ($ns, $msg) = @_;
		1582
		1583	# this weird shuffling is so that direct followup queries
		1584	# get handled first
		1585	my $queue = delete $ns->{query_queue};
		1586
		1587	(shift @$queue)->[1]->($msg);
		1588
		1589	push @{ $ns->{query_queue} }, @$queue;
		1590
		1591	if (@{ $ns->{query_queue} } == @$queue) {
		1592	if (@$queue) {
		1593	$ns->send_packet ($ns->{query_queue}[0][0]);
		1594	} else {
		1595	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1596	}
		1597	}
		1598	},
		1599	);
		1600
		1601	=item $client->coro (\&cb)
		1602
		1603	Create a new coroutine, running the specified callback. The coroutine will
		1604	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1605	or loss of connection).
		1606
		1607	=cut
		1608
		1609	sub cf::client::coro {
		1610	my ($self, $cb) = @_;
		1611
		1612	my $coro; $coro = async {
		1613	eval {
		1614	$cb->();
		1615	};
		1616	warn $@ if $@;
		1617	};
		1618
		1619	$coro->on_destroy (sub {
		1620	delete $self->{_coro}{$coro+0};
		1621	});
		1622
		1623	$self->{_coro}{$coro+0} = $coro;
		1624
		1625	$coro
		1626	}
		1627
		1628	cf::client->attach (
		1629	on_destroy => sub {
		1630	my ($ns) = @_;
		1631
		1632	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1633	},
		1634	);
		1635
		1636	=back
		1637
		1638
		1639	=head2 SAFE SCRIPTING
		1640
		1641	Functions that provide a safe environment to compile and execute
		1642	snippets of perl code without them endangering the safety of the server
		1643	itself. Looping constructs, I/O operators and other built-in functionality
		1644	is not available in the safe scripting environment, and the number of
		1645	functions and methods that can be called is greatly reduced.
		1646
		1647	=cut
805		1648
806	our $safe = new Safe "safe";	1649	our $safe = new Safe "safe";
807	our $safe_hole = new Safe::Hole;	1650	our $safe_hole = new Safe::Hole;
808		1651
809	$SIG{FPE} = 'IGNORE';	1652	$SIG{FPE} = 'IGNORE';
810		1653
811	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1654	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
812		1655
813	# here we export the classes and methods available to script code	1656	# here we export the classes and methods available to script code
814		1657
		1658	=pod
		1659
		1660	The following fucntions and emthods are available within a safe environment:
		1661
		1662	cf::object contr pay_amount pay_player map
		1663	cf::object::player player
		1664	cf::player peaceful
		1665	cf::map trigger
		1666
		1667	=cut
		1668
815	for (	1669	for (
816	["cf::object" => qw(contr pay_amount pay_player)],	1670	["cf::object" => qw(contr pay_amount pay_player map)],
817	["cf::object::player" => qw(player)],	1671	["cf::object::player" => qw(player)],
818	["cf::player" => qw(peaceful)],	1672	["cf::player" => qw(peaceful)],
		1673	["cf::map" => qw(trigger)],
819	) {	1674	) {
820	no strict 'refs';	1675	no strict 'refs';
821	my ($pkg, @funs) = @$_;	1676	my ($pkg, @funs) = @$_;
822	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1677	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
823	for @funs;	1678	for @funs;
824	}	1679	}
		1680
		1681	=over 4
		1682
		1683	=item @retval = safe_eval $code, [var => value, ...]
		1684
		1685	Compiled and executes the given perl code snippet. additional var/value
		1686	pairs result in temporary local (my) scalar variables of the given name
		1687	that are available in the code snippet. Example:
		1688
		1689	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1690
		1691	=cut
825		1692
826	sub safe_eval($;@) {	1693	sub safe_eval($;@) {
827	my ($code, %vars) = @_;	1694	my ($code, %vars) = @_;
828		1695
829	my $qcode = $code;	1696	my $qcode = $code;
…		…
852	}	1719	}
853		1720
854	wantarray ? @res : $res[0]	1721	wantarray ? @res : $res[0]
855	}	1722	}
856		1723
		1724	=item cf::register_script_function $function => $cb
		1725
		1726	Register a function that can be called from within map/npc scripts. The
		1727	function should be reasonably secure and should be put into a package name
		1728	like the extension.
		1729
		1730	Example: register a function that gets called whenever a map script calls
		1731	C<rent::overview>, as used by the C<rent> extension.
		1732
		1733	cf::register_script_function "rent::overview" => sub {
		1734	...
		1735	};
		1736
		1737	=cut
		1738
857	sub register_script_function {	1739	sub register_script_function {
858	my ($fun, $cb) = @_;	1740	my ($fun, $cb) = @_;
859		1741
860	no strict 'refs';	1742	no strict 'refs';
861	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1743	*{"safe::$fun"} = $safe_hole->wrap ($cb);
862	}	1744	}
863		1745
		1746	=back
		1747
		1748	=cut
		1749
		1750	#############################################################################
		1751
		1752	=head2 EXTENSION DATABASE SUPPORT
		1753
		1754	Crossfire maintains a very simple database for extension use. It can
		1755	currently store anything that can be serialised using Storable, which
		1756	excludes objects.
		1757
		1758	The parameter C<$family> should best start with the name of the extension
		1759	using it, it should be unique.
		1760
		1761	=over 4
		1762
		1763	=item $hashref = cf::db_get $family
		1764
		1765	Return a hashref for use by the extension C<$family>, which can be
		1766	modified. After modifications, you have to call C<cf::db_dirty> or
		1767	C<cf::db_sync>.
		1768
		1769	=item $value = cf::db_get $family => $key
		1770
		1771	Returns a single value from the database
		1772
		1773	=item cf::db_put $family => $hashref
		1774
		1775	Stores the given family hashref into the database. Updates are delayed, if
		1776	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1777
		1778	=item cf::db_put $family => $key => $value
		1779
		1780	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1781	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1782
		1783	=item cf::db_dirty
		1784
		1785	Marks the database as dirty, to be updated at a later time.
		1786
		1787	=item cf::db_sync
		1788
		1789	Immediately write the database to disk I<if it is dirty>.
		1790
		1791	=cut
		1792
		1793	our $DB;
		1794
		1795	{
		1796	my $path = cf::localdir . "/database.pst";
		1797
		1798	sub db_load() {
		1799	warn "loading database $path\n";#d# remove later
		1800	$DB = stat $path ? Storable::retrieve $path : { };
		1801	}
		1802
		1803	my $pid;
		1804
		1805	sub db_save() {
		1806	warn "saving database $path\n";#d# remove later
		1807	waitpid $pid, 0 if $pid;
		1808	if (0 == ($pid = fork)) {
		1809	$DB->{_meta}{version} = 1;
		1810	Storable::nstore $DB, "$path~";
		1811	rename "$path~", $path;
		1812	cf::_exit 0 if defined $pid;
		1813	}
		1814	}
		1815
		1816	my $dirty;
		1817
		1818	sub db_sync() {
		1819	db_save if $dirty;
		1820	undef $dirty;
		1821	}
		1822
		1823	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1824	db_sync;
		1825	});
		1826
		1827	sub db_dirty() {
		1828	$dirty = 1;
		1829	$idle->start;
		1830	}
		1831
		1832	sub db_get($;$) {
		1833	@_ >= 2
		1834	? $DB->{$_[0]}{$_[1]}
		1835	: ($DB->{$_[0]} ||= { })
		1836	}
		1837
		1838	sub db_put($$;$) {
		1839	if (@_ >= 3) {
		1840	$DB->{$_[0]}{$_[1]} = $_[2];
		1841	} else {
		1842	$DB->{$_[0]} = $_[1];
		1843	}
		1844	db_dirty;
		1845	}
		1846
		1847	cf::global->attach (
		1848	prio => 10000,
		1849	on_cleanup => sub {
		1850	db_sync;
		1851	},
		1852	);
		1853	}
		1854
864	#############################################################################	1855	#############################################################################
865	# the server's main()	1856	# the server's main()
866		1857
		1858	sub cfg_load {
		1859	open my $fh, "<:utf8", cf::confdir . "/config"
		1860	or return;
		1861
		1862	local $/;
		1863	*CFG = YAML::Syck::Load <$fh>;
		1864	}
		1865
867	sub main {	1866	sub main {
		1867	# we must not ever block the main coroutine
		1868	local $Coro::idle = sub {
		1869	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1870	(Coro::unblock_sub {
		1871	Event::one_event;
		1872	})->();
		1873	};
		1874
		1875	cfg_load;
		1876	db_load;
		1877	load_extensions;
868	Event::loop;	1878	Event::loop;
869	}	1879	}
870		1880
871	#############################################################################	1881	#############################################################################
872	# initialisation	1882	# initialisation
873		1883
		1884	sub reload() {
		1885	# can/must only be called in main
		1886	if ($Coro::current != $Coro::main) {
		1887	warn "can only reload from main coroutine\n";
		1888	return;
		1889	}
		1890
		1891	warn "reloading...";
		1892
		1893	local $FREEZE = 1;
		1894	cf::emergency_save;
		1895
		1896	eval {
		1897	# if anything goes wrong in here, we should simply crash as we already saved
		1898
		1899	# cancel all watchers
		1900	for (Event::all_watchers) {
		1901	$_->cancel if $_->data & WF_AUTOCANCEL;
		1902	}
		1903
		1904	# cancel all extension coros
		1905	$_->cancel for values %EXT_CORO;
		1906	%EXT_CORO = ();
		1907
		1908	# unload all extensions
		1909	for (@exts) {
		1910	warn "unloading <$_>";
		1911	unload_extension $_;
		1912	}
		1913
		1914	# unload all modules loaded from $LIBDIR
		1915	while (my ($k, $v) = each %INC) {
		1916	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1917
		1918	warn "removing <$k>";
		1919	delete $INC{$k};
		1920
		1921	$k =~ s/\.pm$//;
		1922	$k =~ s/\//::/g;
		1923
		1924	if (my $cb = $k->can ("unload_module")) {
		1925	$cb->();
		1926	}
		1927
		1928	Symbol::delete_package $k;
		1929	}
		1930
		1931	# sync database to disk
		1932	cf::db_sync;
		1933	IO::AIO::flush;
		1934
		1935	# get rid of safe::, as good as possible
		1936	Symbol::delete_package "safe::$_"
		1937	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1938
		1939	# remove register_script_function callbacks
		1940	# TODO
		1941
		1942	# unload cf.pm "a bit"
		1943	delete $INC{"cf.pm"};
		1944
		1945	# don't, removes xs symbols, too,
		1946	# and global variables created in xs
		1947	#Symbol::delete_package __PACKAGE__;
		1948
		1949	# reload cf.pm
		1950	warn "reloading cf.pm";
		1951	require cf;
		1952	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1953
		1954	# load config and database again
		1955	cf::cfg_load;
		1956	cf::db_load;
		1957
		1958	# load extensions
		1959	warn "load extensions";
		1960	cf::load_extensions;
		1961
		1962	# reattach attachments to objects
		1963	warn "reattach";
		1964	_global_reattach;
		1965	};
		1966
		1967	if ($@) {
		1968	warn $@;
		1969	warn "error while reloading, exiting.";
		1970	exit 1;
		1971	}
		1972
		1973	warn "reloaded successfully";
		1974	};
		1975
		1976	#############################################################################
		1977
		1978	unless ($LINK_MAP) {
		1979	$LINK_MAP = cf::map::new;
		1980
		1981	$LINK_MAP->width (41);
		1982	$LINK_MAP->height (41);
		1983	$LINK_MAP->alloc;
		1984	$LINK_MAP->path ("{link}");
		1985	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		1986	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1987
		1988	# dirty hack because... archetypes are not yet loaded
		1989	Event->timer (
		1990	after => 2,
		1991	cb => sub {
		1992	$_[0]->w->cancel;
		1993
		1994	# provide some exits "home"
		1995	my $exit = cf::object::new "exit";
		1996
		1997	$exit->slaying ($EMERGENCY_POSITION->[0]);
		1998	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		1999	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2000
		2001	$LINK_MAP->insert ($exit->clone, 19, 19);
		2002	$LINK_MAP->insert ($exit->clone, 19, 20);
		2003	$LINK_MAP->insert ($exit->clone, 19, 21);
		2004	$LINK_MAP->insert ($exit->clone, 20, 19);
		2005	$LINK_MAP->insert ($exit->clone, 20, 21);
		2006	$LINK_MAP->insert ($exit->clone, 21, 19);
		2007	$LINK_MAP->insert ($exit->clone, 21, 20);
		2008	$LINK_MAP->insert ($exit->clone, 21, 21);
		2009
		2010	$exit->destroy;
		2011	});
		2012
		2013	$LINK_MAP->{deny_save} = 1;
		2014	$LINK_MAP->{deny_reset} = 1;
		2015
		2016	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2017	}
		2018
874	register "<global>", __PACKAGE__;	2019	register "<global>", __PACKAGE__;
875		2020
		2021	register_command "reload" => sub {
		2022	my ($who, $arg) = @_;
		2023
		2024	if ($who->flag (FLAG_WIZ)) {
		2025	$who->message ("start of reload.");
		2026	reload;
		2027	$who->message ("end of reload.");
		2028	}
		2029	};
		2030
876	unshift @INC, $LIBDIR;	2031	unshift @INC, $LIBDIR;
877		2032
878	load_extensions;
879
880	$TICK_WATCHER = Event->timer (	2033	$TICK_WATCHER = Event->timer (
		2034	reentrant => 0,
881	prio => 1,	2035	prio => 0,
882	at => $NEXT_TICK || 1,	2036	at => $NEXT_TICK || $TICK,
		2037	data => WF_AUTOCANCEL,
883	cb => sub {	2038	cb => sub {
		2039	unless ($FREEZE) {
884	cf::server_tick; # one server iteration	2040	cf::server_tick; # one server iteration
		2041	$RUNTIME += $TICK;
		2042	}
885		2043
886	my $NOW = Event::time;
887	$NEXT_TICK += $TICK;	2044	$NEXT_TICK += $TICK;
888		2045
889	# if we are delayed by four ticks, skip them all	2046	# if we are delayed by four ticks or more, skip them all
890	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2047	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
891		2048
892	$TICK_WATCHER->at ($NEXT_TICK);	2049	$TICK_WATCHER->at ($NEXT_TICK);
893	$TICK_WATCHER->start;	2050	$TICK_WATCHER->start;
894	},	2051	},
895	);	2052	);
896		2053
897	_reload_2;	2054	IO::AIO::max_poll_time $TICK * 0.2;
		2055
		2056	Event->io (
		2057	fd => IO::AIO::poll_fileno,
		2058	poll => 'r',
		2059	prio => 5,
		2060	data => WF_AUTOCANCEL,
		2061	cb => \&IO::AIO::poll_cb,
		2062	);
		2063
		2064	Event->timer (
		2065	data => WF_AUTOCANCEL,
		2066	after => 0,
		2067	interval => 10,
		2068	cb => sub {
		2069	(Coro::unblock_sub {
		2070	write_runtime
		2071	or warn "ERROR: unable to write runtime file: $!";
		2072	})->();
		2073	},
		2074	);
898		2075
899	1	2076	1
900		2077

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