[ViewVC] Diff of: cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.58 by root, Wed Aug 30 12:08:15 2006 UTC vs.
Revision 1.109 by root, Sun Dec 31 22:23:12 2006 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	#############################################################################
		78
		79	=head2 GLOBAL VARIABLES
		80
		81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
		91
		92	=item $cf::LIBDIR
		93
		94	The perl library directory, where extensions and cf-specific modules can
		95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
		100
		101	=item $cf::TICK
		102
		103	The interval between server ticks, in seconds.
		104
		105	=item %cf::CFG
		106
		107	Configuration for the server, loaded from C</etc/crossfire/config>, or
		108	from wherever your confdir points to.
		109
		110	=back
		111
		112	=cut
27		113
28	BEGIN {	114	BEGIN {
29	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
31	$msg .= "\n"	119	$msg .= "\n"
32	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
33		121
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
36	};	123	};
37	}	124	}
38		125
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	130	@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';	131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		132
75	# we bless all objects into (empty) derived classes to force a method lookup	133	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	134	# 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)) {	135	for my $pkg (qw(
		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
78	no strict 'refs';	142	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	144	}
81		145
82	$Event::DIED = sub {	146	$Event::DIED = sub {
84	};	148	};
85		149
86	my %ext_pkg;	150	my %ext_pkg;
87	my @exts;	151	my @exts;
88	my @hook;	152	my @hook;
89	my %command;
90	my %extcmd;
91		153
92	#############################################################################	154	=head2 UTILITY FUNCTIONS
93	# utility functions	155
		156	=over 4
		157
		158	=cut
94		159
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	160	use JSON::Syck (); # TODO# replace by JSON::PC once working
		161
		162	=item $ref = cf::from_json $json
		163
		164	Converts a JSON string into the corresponding perl data structure.
		165
		166	=cut
96		167
97	sub from_json($) {	168	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	170	JSON::Syck::Load $_[0]
100	}	171	}
101		172
		173	=item $json = cf::to_json $ref
		174
		175	Converts a perl data structure into its JSON representation.
		176
		177	=cut
		178
102	sub to_json($) {	179	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	181	JSON::Syck::Dump $_[0]
105	}	182	}
106		183
		184	=item cf::sync_job { BLOCK }
		185
		186	The design of crossfire+ requires that the main coro ($Coro::main) is
		187	always able to handle events or runnable, as crossfire+ is only partly
		188	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		189
		190	If it must be done, put the blocking parts into C<sync_job>. This will run
		191	the given BLOCK in another coroutine while waiting for the result. The
		192	server will be frozen during this time, so the block should either finish
		193	fast or be very important.
		194
		195	=cut
		196
		197	sub sync_job(&) {
		198	my ($job) = @_;
		199
		200	my $busy = 1;
		201	my @res;
		202
		203	# TODO: use suspend/resume instead
		204	local $FREEZE = 1;
		205
		206	my $coro = Coro::async {
		207	@res = eval { $job->() };
		208	warn $@ if $@;
		209	undef $busy;
		210	};
		211
		212	if ($Coro::current == $Coro::main) {
		213	$coro->prio (Coro::PRIO_MAX);
		214	while ($busy) {
		215	Coro::cede_notself;
		216	Event::one_event unless Coro::nready;
		217	}
		218	} else {
		219	$coro->join;
		220	}
		221
		222	wantarray ? @res : $res[0]
		223	}
		224
		225	=item $coro = cf::coro { BLOCK }
		226
		227	Creates and returns a new coro. This coro is automcatially being canceled
		228	when the extension calling this is being unloaded.
		229
		230	=cut
		231
		232	sub coro(&) {
		233	my $cb = shift;
		234
		235	my $coro; $coro = async {
		236	eval {
		237	$cb->();
		238	};
		239	warn $@ if $@;
		240	};
		241
		242	$coro->on_destroy (sub {
		243	delete $EXT_CORO{$coro+0};
		244	});
		245	$EXT_CORO{$coro+0} = $coro;
		246
		247	$coro
		248	}
		249
		250	sub write_runtime {
		251	my $runtime = cf::localdir . "/runtime";
		252
		253	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		254	or return;
		255
		256	my $value = $cf::RUNTIME;
		257	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		258	and return;
		259
		260	aio_fsync $fh
		261	and return;
		262
		263	close $fh
		264	or return;
		265
		266	aio_rename "$runtime~", $runtime
		267	and return;
		268
		269	1
		270	}
		271
		272	=back
		273
		274	=cut
		275
107	#############################################################################	276	#############################################################################
108	# "new" plug-in system
109		277
110	=head3 EVENTS AND OBJECT ATTACHMENTS	278	package cf::path;
		279
		280	sub new {
		281	my ($class, $path, $base) = @_;
		282
		283	my $self = bless { }, $class;
		284
		285	if ($path =~ s{^\?random/}{}) {
		286	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		287	$self->{random} = cf::from_json $data;
		288	} else {
		289	if ($path =~ s{^~([^/]+)?}{}) {
		290	$self->{user_rel} = 1;
		291
		292	if (defined $1) {
		293	$self->{user} = $1;
		294	} elsif ($base =~ m{^~([^/]+)/}) {
		295	$self->{user} = $1;
		296	} else {
		297	warn "cannot resolve user-relative path without user <$path,$base>\n";
		298	}
		299	} elsif ($path =~ /^\//) {
		300	# already absolute
		301	} else {
		302	$base =~ s{[^/]+/?$}{};
		303	return $class->new ("$base/$path");
		304	}
		305
		306	for ($path) {
		307	redo if s{/\.?/}{/};
		308	redo if s{/[^/]+/\.\./}{/};
		309	}
		310	}
		311
		312	$self->{path} = $path;
		313
		314	$self
		315	}
		316
		317	# the name / primary key / in-game path
		318	sub as_string {
		319	my ($self) = @_;
		320
		321	$self->{user_rel} ? "~$self->{user}$self->{path}"
		322	: $self->{random} ? "?random/$self->{path}"
		323	: $self->{path}
		324	}
		325
		326	# the displayed name, this is a one way mapping
		327	sub visible_name {
		328	my ($self) = @_;
		329
		330	# if (my $rmp = $self->{random}) {
		331	# # todo: be more intelligent about this
		332	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		333	# } else {
		334	$self->as_string
		335	# }
		336	}
		337
		338	# escape the /'s in the path
		339	sub _escaped_path {
		340	# ∕ is U+2215
		341	(my $path = $_[0]{path}) =~ s/\//∕/g;
		342	$path
		343	}
		344
		345	# the original (read-only) location
		346	sub load_path {
		347	my ($self) = @_;
		348
		349	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		350	}
		351
		352	# the temporary/swap location
		353	sub save_path {
		354	my ($self) = @_;
		355
		356	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		357	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		358	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		359	}
		360
		361	# the unique path, might be eq to save_path
		362	sub uniq_path {
		363	my ($self) = @_;
		364
		365	$self->{user_rel} \|\| $self->{random}
		366	? undef
		367	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		368	}
		369
		370	# return random map parameters, or undef
		371	sub random_map_params {
		372	my ($self) = @_;
		373
		374	$self->{random}
		375	}
		376
		377	# this is somewhat ugly, but style maps do need special treatment
		378	sub is_style_map {
		379	$_[0]{path} =~ m{^/styles/}
		380	}
		381
		382	package cf;
		383
		384	#############################################################################
		385
		386	=head2 ATTACHABLE OBJECTS
		387
		388	Many objects in crossfire are so-called attachable objects. That means you can
		389	attach callbacks/event handlers (a collection of which is called an "attachment")
		390	to it. All such attachable objects support the following methods.
		391
		392	In the following description, CLASS can be any of C<global>, C<object>
		393	C<player>, C<client> or C<map> (i.e. the attachable objects in
		394	crossfire+).
111		395
112	=over 4	396	=over 4
113		397
114	=item $object->attach ($attachment, key => $value...)
115
116	=item $object->detach ($attachment)
117
118	Attach/detach a pre-registered attachment to an object.
119
120	=item $player->attach ($attachment, key => $value...)
121
122	=item $player->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to a player.
125
126	=item $map->attach ($attachment, key => $value...)	398	=item $attachable->attach ($attachment, key => $value...)
127		399
128	=item $map->detach ($attachment)	400	=item $attachable->detach ($attachment)
129		401
130	Attach/detach a pre-registered attachment to a map.	402	Attach/detach a pre-registered attachment to a specific object and give it
		403	the specified key/value pairs as arguments.
131		404
132	=item $bool = $object->attached ($name)	405	Example, attach a minesweeper attachment to the given object, making it a
		406	10x10 minesweeper game:
133		407
134	=item $bool = $player->attached ($name)	408	$obj->attach (minesweeper => width => 10, height => 10);
135		409
136	=item $bool = $map->attached ($name)	410	=item $bool = $attachable->attached ($name)
137		411
138	Checks wether the named attachment is currently attached to the object.	412	Checks wether the named attachment is currently attached to the object.
139		413
140	=item cf::attach_global ...	414	=item cf::CLASS->attach ...
141		415
142	Attach handlers for global events.	416	=item cf::CLASS->detach ...
143		417
144	This and all following C<attach_*>-functions expect any number of the	418	Define an anonymous attachment and attach it to all objects of the given
145	following handler/hook descriptions:	419	CLASS. See the next function for an explanation of its arguments.
		420
		421	You can attach to global events by using the C<cf::global> class.
		422
		423	Example, log all player logins:
		424
		425	cf::player->attach (
		426	on_login => sub {
		427	my ($pl) = @_;
		428	...
		429	},
		430	);
		431
		432	Example, attach to the jeweler skill:
		433
		434	cf::object->attach (
		435	type => cf::SKILL,
		436	subtype => cf::SK_JEWELER,
		437	on_use_skill => sub {
		438	my ($sk, $ob, $part, $dir, $msg) = @_;
		439	...
		440	},
		441	);
		442
		443	=item cf::CLASS::attachment $name, ...
		444
		445	Register an attachment by C<$name> through which attachable objects of the
		446	given CLASS can refer to this attachment.
		447
		448	Some classes such as crossfire maps and objects can specify attachments
		449	that are attached at load/instantiate time, thus the need for a name.
		450
		451	These calls expect any number of the following handler/hook descriptions:
146		452
147	=over 4	453	=over 4
148		454
149	=item prio => $number	455	=item prio => $number
150		456
…		…
152	by another C<prio> setting). Lower priority handlers get executed	458	by another C<prio> setting). Lower priority handlers get executed
153	earlier. The default priority is C<0>, and many built-in handlers are	459	earlier. The default priority is C<0>, and many built-in handlers are
154	registered at priority C<-1000>, so lower priorities should not be used	460	registered at priority C<-1000>, so lower priorities should not be used
155	unless you know what you are doing.	461	unless you know what you are doing.
156		462
		463	=item type => $type
		464
		465	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		466	given type of objects only (the additional parameter C<subtype> can be
		467	used to further limit to the given subtype).
		468
157	=item on_I<event> => \&cb	469	=item on_I<event> => \&cb
158		470
159	Call the given code reference whenever the named event happens (event is	471	Call the given code reference whenever the named event happens (event is
160	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	472	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
161	handlers are recognised generally depends on the type of object these	473	handlers are recognised generally depends on the type of object these
…		…
170	package and register them. Only handlers for eevents supported by the	482	package and register them. Only handlers for eevents supported by the
171	object/class are recognised.	483	object/class are recognised.
172		484
173	=back	485	=back
174		486
175	=item cf::attach_to_type $object_type, $subtype, ...	487	Example, define an attachment called "sockpuppet" that calls the given
		488	event handler when a monster attacks:
176		489
177	Attach handlers for a specific object type (e.g. TRANSPORT) and	490	cf::object::attachment sockpuppet =>
178	subtype. If C<$subtype> is zero or undef, matches all objects of the given	491	on_skill_attack => sub {
179	type.	492	my ($self, $victim) = @_;
180		493	...
181	=item cf::attach_to_objects ...
182
183	Attach handlers to all objects. Do not use this except for debugging or
184	very rare events, as handlers are (obviously) called for I<all> objects in
185	the game.
186
187	=item cf::attach_to_players ...
188
189	Attach handlers to all players.
190
191	=item cf::attach_to_maps ...
192
193	Attach handlers to all maps.
194
195	=item cf:register_attachment $name, ...
196
197	Register an attachment by name through which objects can refer to this
198	attachment.
199
200	=item cf:register_player_attachment $name, ...
201
202	Register an attachment by name through which players can refer to this
203	attachment.
204
205	=item cf:register_map_attachment $name, ...
206
207	Register an attachment by name through which maps can refer to this
208	attachment.
209
210	=cut
211
212	# the following variables are defined in .xs and must not be re-created
213	our @CB_GLOBAL = (); # registry for all global events
214	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
215	our @CB_PLAYER = ();
216	our @CB_TYPE = (); # registry for type (cf-object class) based events
217	our @CB_MAP = ();
218
219	my %attachment;
220
221	sub _attach_cb($\%$$$) {
222	my ($registry, $undo, $event, $prio, $cb) = @_;
223
224	use sort 'stable';
225
226	$cb = [$prio, $cb];
227
228	@{$registry->[$event]} = sort
229	{ $a->[0] cmp $b->[0] }
230	@{$registry->[$event] \|\| []}, $cb;
231
232	push @{$undo->{cb}}, [$event, $cb];
233	}
234
235	# attach handles attaching event callbacks
236	# the only thing the caller has to do is pass the correct
237	# registry (== where the callback attaches to).
238	sub _attach(\@$@) {
239	my ($registry, $klass, @arg) = @_;
240
241	my $prio = 0;
242
243	my %undo = (
244	registry => $registry,
245	cb => [],
246	);
247
248	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
249
250	while (@arg) {
251	my $type = shift @arg;
252
253	if ($type eq "prio") {
254	$prio = shift @arg;
255
256	} elsif ($type eq "package") {
257	my $pkg = shift @arg;
258
259	while (my ($name, $id) = each %cb_id) {
260	if (my $cb = $pkg->can ($name)) {
261	_attach_cb $registry, %undo, $id, $prio, $cb;
262	}
263	}	494	}
264
265	} elsif (exists $cb_id{$type}) {
266	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
267
268	} elsif (ref $type) {
269	warn "attaching objects not supported, ignoring.\n";
270
271	} else {
272	shift @arg;
273	warn "attach argument '$type' not supported, ignoring.\n";
274	}
275	}
276
277	\%undo
278	}
279
280	sub _attach_attachment {
281	my ($obj, $name, %arg) = @_;
282
283	return if exists $obj->{_attachment}{$name};
284
285	my $res;
286
287	if (my $attach = $attachment{$name}) {
288	my $registry = $obj->registry;
289
290	for (@$attach) {
291	my ($klass, @attach) = @$_;
292	$res = _attach @$registry, $klass, @attach;
293	}
294
295	$obj->{$name} = \%arg;
296	} else {
297	warn "object uses attachment '$name' that is not available, postponing.\n";
298	}
299
300	$obj->{_attachment}{$name} = undef;
301
302	$res->{attachment} = $name;
303	$res
304	}
305
306	*cf::object::attach =
307	*cf::player::attach =
308	*cf::map::attach = sub {
309	my ($obj, $name, %arg) = @_;
310
311	_attach_attachment $obj, $name, %arg;
312	};
313
314	# all those should be optimised
315	*cf::object::detach =
316	*cf::player::detach =
317	*cf::map::detach = sub {
318	my ($obj, $name) = @_;
319
320	delete $obj->{_attachment}{$name};
321	reattach ($obj);
322	};
323
324	*cf::object::attached =
325	*cf::player::attached =
326	*cf::map::attached = sub {
327	my ($obj, $name) = @_;
328
329	exists $obj->{_attachment}{$name}
330	};
331
332	sub attach_global {
333	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
334	}
335
336	sub attach_to_type {
337	my $type = shift;
338	my $subtype = shift;
339
340	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
341	}
342
343	sub attach_to_objects {
344	_attach @CB_OBJECT, KLASS_OBJECT, @_
345	}
346
347	sub attach_to_players {
348	_attach @CB_PLAYER, KLASS_PLAYER, @_
349	}
350
351	sub attach_to_maps {
352	_attach @CB_MAP, KLASS_MAP, @_
353	}
354
355	sub register_attachment {
356	my $name = shift;
357
358	$attachment{$name} = [[KLASS_OBJECT, @_]];
359	}
360
361	sub register_player_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_PLAYER, @_]];
365	}
366
367	sub register_map_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_MAP, @_]];
371	}
372
373	our $override;
374	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
375
376	sub override {
377	$override = 1;
378	@invoke_results = ();
379	}
380
381	sub do_invoke {
382	my $event = shift;
383	my $callbacks = shift;
384
385	@invoke_results = ();
386
387	local $override;
388
389	for (@$callbacks) {
390	eval { &{$_->[1]} };
391
392	if ($@) {
393	warn "$@";
394	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
395	override;
396	}
397
398	return 1 if $override;
399	}
400
401	0	495	}
402	}
403		496
404	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	497	=item $attachable->valid
405
406	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
407
408	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
409
410	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
411
412	Generate a global/object/player/map-specific event with the given arguments.
413
414	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
415	removed in future versions), and there is no public API to access override
416	results (if you must, access C<@cf::invoke_results> directly).
417
418	=back
419
420	=head2 methods valid for all pointers
421
422	=over 4
423
424	=item $object->valid
425
426	=item $player->valid
427
428	=item $map->valid
429		498
430	Just because you have a perl object does not mean that the corresponding	499	Just because you have a perl object does not mean that the corresponding
431	C-level object still exists. If you try to access an object that has no	500	C-level object still exists. If you try to access an object that has no
432	valid C counterpart anymore you get an exception at runtime. This method	501	valid C counterpart anymore you get an exception at runtime. This method
433	can be used to test for existence of the C object part without causing an	502	can be used to test for existence of the C object part without causing an
434	exception.	503	exception.
435		504
		505	=cut
		506
		507	# the following variables are defined in .xs and must not be re-created
		508	our @CB_GLOBAL = (); # registry for all global events
		509	our @CB_ATTACHABLE = (); # registry for all attachables
		510	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		511	our @CB_PLAYER = ();
		512	our @CB_CLIENT = ();
		513	our @CB_TYPE = (); # registry for type (cf-object class) based events
		514	our @CB_MAP = ();
		515
		516	my %attachment;
		517
		518	sub _attach_cb($$$$) {
		519	my ($registry, $event, $prio, $cb) = @_;
		520
		521	use sort 'stable';
		522
		523	$cb = [$prio, $cb];
		524
		525	@{$registry->[$event]} = sort
		526	{ $a->[0] cmp $b->[0] }
		527	@{$registry->[$event] \|\| []}, $cb;
		528	}
		529
		530	# hack
		531	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		532
		533	# attach handles attaching event callbacks
		534	# the only thing the caller has to do is pass the correct
		535	# registry (== where the callback attaches to).
		536	sub _attach {
		537	my ($registry, $klass, @arg) = @_;
		538
		539	my $object_type;
		540	my $prio = 0;
		541	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		542
		543	#TODO: get rid of this hack
		544	if ($attachable_klass{$klass}) {
		545	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		546	}
		547
		548	while (@arg) {
		549	my $type = shift @arg;
		550
		551	if ($type eq "prio") {
		552	$prio = shift @arg;
		553
		554	} elsif ($type eq "type") {
		555	$object_type = shift @arg;
		556	$registry = $CB_TYPE[$object_type] \|\|= [];
		557
		558	} elsif ($type eq "subtype") {
		559	defined $object_type or Carp::croak "subtype specified without type";
		560	my $object_subtype = shift @arg;
		561	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] \|\|= [];
		562
		563	} elsif ($type eq "package") {
		564	my $pkg = shift @arg;
		565
		566	while (my ($name, $id) = each %cb_id) {
		567	if (my $cb = $pkg->can ($name)) {
		568	_attach_cb $registry, $id, $prio, $cb;
		569	}
		570	}
		571
		572	} elsif (exists $cb_id{$type}) {
		573	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		574
		575	} elsif (ref $type) {
		576	warn "attaching objects not supported, ignoring.\n";
		577
		578	} else {
		579	shift @arg;
		580	warn "attach argument '$type' not supported, ignoring.\n";
		581	}
		582	}
		583	}
		584
		585	sub _object_attach {
		586	my ($obj, $name, %arg) = @_;
		587
		588	return if exists $obj->{_attachment}{$name};
		589
		590	if (my $attach = $attachment{$name}) {
		591	my $registry = $obj->registry;
		592
		593	for (@$attach) {
		594	my ($klass, @attach) = @$_;
		595	_attach $registry, $klass, @attach;
		596	}
		597
		598	$obj->{$name} = \%arg;
		599	} else {
		600	warn "object uses attachment '$name' that is not available, postponing.\n";
		601	}
		602
		603	$obj->{_attachment}{$name} = undef;
		604	}
		605
		606	sub cf::attachable::attach {
		607	if (ref $_[0]) {
		608	_object_attach @_;
		609	} else {
		610	_attach shift->_attach_registry, @_;
		611	}
		612	};
		613
		614	# all those should be optimised
		615	sub cf::attachable::detach {
		616	my ($obj, $name) = @_;
		617
		618	if (ref $obj) {
		619	delete $obj->{_attachment}{$name};
		620	reattach ($obj);
		621	} else {
		622	Carp::croak "cannot, currently, detach class attachments";
		623	}
		624	};
		625
		626	sub cf::attachable::attached {
		627	my ($obj, $name) = @_;
		628
		629	exists $obj->{_attachment}{$name}
		630	}
		631
		632	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		633	eval "#line " . __LINE__ . " 'cf.pm'
		634	sub cf::\L$klass\E::_attach_registry {
		635	(\\\@CB_$klass, KLASS_$klass)
		636	}
		637
		638	sub cf::\L$klass\E::attachment {
		639	my \$name = shift;
		640
		641	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		642	}
		643	";
		644	die if $@;
		645	}
		646
		647	our $override;
		648	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		649
		650	sub override {
		651	$override = 1;
		652	@invoke_results = ();
		653	}
		654
		655	sub do_invoke {
		656	my $event = shift;
		657	my $callbacks = shift;
		658
		659	@invoke_results = ();
		660
		661	local $override;
		662
		663	for (@$callbacks) {
		664	eval { &{$_->[1]} };
		665
		666	if ($@) {
		667	warn "$@";
		668	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		669	override;
		670	}
		671
		672	return 1 if $override;
		673	}
		674
		675	0
		676	}
		677
		678	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		679
		680	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		681
		682	Generate an object-specific event with the given arguments.
		683
		684	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		685	removed in future versions), and there is no public API to access override
		686	results (if you must, access C<@cf::invoke_results> directly).
		687
436	=back	688	=back
437		689
438	=cut	690	=cut
439
440	*cf::object::valid =
441	*cf::player::valid =
442	*cf::map::valid = \&cf::_valid;
443		691
444	#############################################################################	692	#############################################################################
445	# object support	693	# object support
446		694
447	sub instantiate {
448	my ($obj, $data) = @_;
449
450	$data = from_json $data;
451
452	for (@$data) {
453	my ($name, $args) = @$_;
454
455	$obj->attach ($name, %{$args \|\| {} });
456	}
457	}
458
459	# basically do the same as instantiate, without calling instantiate
460	sub reattach {	695	sub reattach {
		696	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	697	my ($obj) = @_;
		698
462	my $registry = $obj->registry;	699	my $registry = $obj->registry;
463		700
464	@$registry = ();	701	@$registry = ();
465		702
466	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };	703	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
467		704
468	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {	705	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
469	if (my $attach = $attachment{$name}) {	706	if (my $attach = $attachment{$name}) {
470	for (@$attach) {	707	for (@$attach) {
471	my ($klass, @attach) = @$_;	708	my ($klass, @attach) = @$_;
472	_attach @$registry, $klass, @attach;	709	_attach $registry, $klass, @attach;
473	}	710	}
474	} else {	711	} else {
475	warn "object uses attachment '$name' that is not available, postponing.\n";	712	warn "object uses attachment '$name' that is not available, postponing.\n";
476	}	713	}
477	}	714	}
478	}	715	}
479		716
480	sub object_freezer_save {	717	cf::attachable->attach (
481	my ($filename, $objs) = @_;
482
483	if (@$objs) {
484	open my $fh, ">:raw", "$filename.pst~";
485	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
486	close $fh;
487	chmod SAVE_MODE, "$filename.pst~";
488	rename "$filename.pst~", "$filename.pst";
489	} else {
490	unlink "$filename.pst";
491	}
492
493	chmod SAVE_MODE, "$filename~";
494	rename "$filename~", $filename;
495	}
496
497	sub object_thawer_load {
498	my ($filename) = @_;
499
500	open my $fh, "<:raw:perlio", "$filename.pst"
501	or return;
502
503	eval { local $/; (Storable::thaw <$fh>)->{objs} }
504	}
505
506	attach_to_objects
507	prio => -1000000,	718	prio => -1000000,
		719	on_instantiate => sub {
		720	my ($obj, $data) = @_;
		721
		722	$data = from_json $data;
		723
		724	for (@$data) {
		725	my ($name, $args) = @$_;
		726
		727	$obj->attach ($name, %{$args \|\| {} });
		728	}
		729	},
		730	on_reattach => \&reattach,
508	on_clone => sub {	731	on_clone => sub {
509	my ($src, $dst) = @_;	732	my ($src, $dst) = @_;
510		733
511	@{$dst->registry} = @{$src->registry};	734	@{$dst->registry} = @{$src->registry};
512		735
513	%$dst = %$src;	736	%$dst = %$src;
514		737
515	%{$dst->{_attachment}} = %{$src->{_attachment}}	738	%{$dst->{_attachment}} = %{$src->{_attachment}}
516	if exists $src->{_attachment};	739	if exists $src->{_attachment};
517	},	740	},
518	;	741	);
		742
		743	sub object_freezer_save {
		744	my ($filename, $rdata, $objs) = @_;
		745
		746	sync_job {
		747	if (length $$rdata) {
		748	warn sprintf "saving %s (%d,%d)\n",
		749	$filename, length $$rdata, scalar @$objs;
		750
		751	if (my $fh = aio_open "$filename~", O_WRONLY \| O_CREAT, 0600) {
		752	chmod SAVE_MODE, $fh;
		753	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		754	aio_fsync $fh;
		755	close $fh;
		756
		757	if (@$objs) {
		758	if (my $fh = aio_open "$filename.pst~", O_WRONLY \| O_CREAT, 0600) {
		759	chmod SAVE_MODE, $fh;
		760	my $data = Storable::nfreeze { version => 1, objs => $objs };
		761	aio_write $fh, 0, (length $data), $data, 0;
		762	aio_fsync $fh;
		763	close $fh;
		764	aio_rename "$filename.pst~", "$filename.pst";
		765	}
		766	} else {
		767	aio_unlink "$filename.pst";
		768	}
		769
		770	aio_rename "$filename~", $filename;
		771	} else {
		772	warn "FATAL: $filename~: $!\n";
		773	}
		774	} else {
		775	aio_unlink $filename;
		776	aio_unlink "$filename.pst";
		777	}
		778	}
		779	}
		780
		781	sub object_freezer_as_string {
		782	my ($rdata, $objs) = @_;
		783
		784	use Data::Dumper;
		785
		786	$$rdata . Dumper $objs
		787	}
		788
		789	sub object_thawer_load {
		790	my ($filename) = @_;
		791
		792	my ($data, $av);
		793
		794	(aio_load $filename, $data) >= 0
		795	or return;
		796
		797	unless (aio_stat "$filename.pst") {
		798	(aio_load "$filename.pst", $av) >= 0
		799	or return;
		800	$av = eval { (Storable::thaw <$av>)->{objs} };
		801	}
		802
		803	return ($data, $av);
		804	}
519		805
520	#############################################################################	806	#############################################################################
521	# old plug-in events	807	# command handling &c
522		808
523	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
524	my $extension = shift;
525	my $event_code = shift;
526		810
527	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
528	or return;	812	$name.
529		813
530	&$cb	814	=cut
531	}
532
533	sub inject_global_event {
534	my $event = shift;
535
536	my $cb = $hook[$event]
537	or return;
538
539	List::Util::max map &$_, values %$cb
540	}
541
542	sub inject_command {
543	my ($name, $obj, $params) = @_;
544
545	for my $cmd (@{ $command{$name} }) {
546	$cmd->[1]->($obj, $params);
547	}
548
549	-1
550	}
551		815
552	sub register_command {	816	sub register_command {
553	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
554		818
555	my $caller = caller;	819	my $caller = caller;
556	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
557		821
558	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
559	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
560	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
561		833
562	sub register_extcmd {	834	sub register_extcmd {
563	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
564		836
565	my $caller = caller;	837	my $caller = caller;
566	#warn "registering extcmd '$name' to '$caller'";	838	#warn "registering extcmd '$name' to '$caller'";
567		839
568	$extcmd{$name} = [$cb, $caller];	840	$EXTCMD{$name} = [$cb, $caller];
569	}	841	}
		842
		843	cf::player->attach (
		844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
		846
		847	my $cb = $COMMAND{$name}
		848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->[0]->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
570		874
571	sub register {	875	sub register {
572	my ($base, $pkg) = @_;	876	my ($base, $pkg) = @_;
573		877
574	#TODO	878	#TODO
…		…
593	. "#line 1 \"$path\"\n{\n"	897	. "#line 1 \"$path\"\n{\n"
594	. (do { local $/; <$fh> })	898	. (do { local $/; <$fh> })
595	. "\n};\n1";	899	. "\n};\n1";
596		900
597	eval $source	901	eval $source
598	or die "$path: $@";	902	or die $@ ? "$path: $@\n"
		903	: "extension disabled.\n";
599		904
600	push @exts, $pkg;	905	push @exts, $pkg;
601	$ext_pkg{$base} = $pkg;	906	$ext_pkg{$base} = $pkg;
602		907
603	# no strict 'refs';	908	# no strict 'refs';
…		…
616	# for my $idx (0 .. $#PLUGIN_EVENT) {	921	# for my $idx (0 .. $#PLUGIN_EVENT) {
617	# delete $hook[$idx]{$pkg};	922	# delete $hook[$idx]{$pkg};
618	# }	923	# }
619		924
620	# remove commands	925	# remove commands
621	for my $name (keys %command) {	926	for my $name (keys %COMMAND) {
622	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	927	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
623		928
624	if (@cb) {	929	if (@cb) {
625	$command{$name} = \@cb;	930	$COMMAND{$name} = \@cb;
626	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
627	} else {	931	} else {
628	delete $command{$name};
629	delete $COMMAND{"$name\000"};	932	delete $COMMAND{$name};
630	}	933	}
631	}	934	}
632		935
633	# remove extcmds	936	# remove extcmds
634	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	937	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
635	delete $extcmd{$name};	938	delete $EXTCMD{$name};
636	}	939	}
637		940
638	if (my $cb = $pkg->can ("unload")) {	941	if (my $cb = $pkg->can ("unload")) {
639	eval {	942	eval {
640	$cb->($pkg);	943	$cb->($pkg);
…		…
644		947
645	Symbol::delete_package $pkg;	948	Symbol::delete_package $pkg;
646	}	949	}
647		950
648	sub load_extensions {	951	sub load_extensions {
649	my $LIBDIR = maps_directory "perl";
650
651	for my $ext (<$LIBDIR/*.ext>) {	952	for my $ext (<$LIBDIR/*.ext>) {
652	next unless -r $ext;	953	next unless -r $ext;
653	eval {	954	eval {
654	load_extension $ext;	955	load_extension $ext;
655	1	956	1
656	} or warn "$ext not loaded: $@";	957	} or warn "$ext not loaded: $@";
657	}	958	}
658	}	959	}
659		960
660	sub _perl_reload(&) {
661	my ($msg) = @_;
662
663	$msg->("reloading...");
664
665	eval {
666	# 1. cancel all watchers
667	$_->cancel for Event::all_watchers;
668
669	# 2. unload all extensions
670	for (@exts) {
671	$msg->("unloading <$_>");
672	unload_extension $_;
673	}
674
675	# 3. unload all modules loaded from $LIBDIR
676	while (my ($k, $v) = each %INC) {
677	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
678
679	$msg->("removing <$k>");
680	delete $INC{$k};
681
682	$k =~ s/\.pm$//;
683	$k =~ s/\//::/g;
684
685	if (my $cb = $k->can ("unload_module")) {
686	$cb->();
687	}
688
689	Symbol::delete_package $k;
690	}
691
692	# 4. get rid of safe::, as good as possible
693	Symbol::delete_package "safe::$_"
694	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
695
696	# 5. remove register_script_function callbacks
697	# TODO
698
699	# 6. unload cf.pm "a bit"
700	delete $INC{"cf.pm"};
701
702	# don't, removes xs symbols, too,
703	# and global variables created in xs
704	#Symbol::delete_package __PACKAGE__;
705
706	# 7. reload cf.pm
707	$msg->("reloading cf.pm");
708	require cf;
709	};
710	$msg->($@) if $@;
711
712	$msg->("reloaded");
713	};
714
715	sub perl_reload() {
716	_perl_reload {
717	warn $_[0];
718	print "$_[0]\n";
719	};
720	}
721
722	register_command "perl-reload", 0, sub {
723	my ($who, $arg) = @_;
724
725	if ($who->flag (FLAG_WIZ)) {
726	_perl_reload {
727	warn $_[0];
728	$who->message ($_[0]);
729	};
730	}
731	};
732
733	#############################################################################
734	# extcmd framework, basically convert ext <msg>
735	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
736
737	attach_to_players
738	on_extcmd => sub {
739	my ($pl, $buf) = @_;
740
741	my $msg = eval { from_json $buf };
742
743	if (ref $msg) {
744	if (my $cb = $extcmd{$msg->{msgtype}}) {
745	if (my %reply = $cb->[0]->($pl, $msg)) {
746	$pl->ext_reply ($msg->{msgid}, %reply);
747	}
748	}
749	} else {
750	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
751	}
752
753	cf::override;
754	},
755	;
756
757	#############################################################################	961	#############################################################################
758	# load/save/clean perl data associated with a map	962	# load/save/clean perl data associated with a map
759		963
760	*cf::mapsupport::on_clean = sub {	964	*cf::mapsupport::on_clean = sub {
761	my ($map) = @_;	965	my ($map) = @_;
…		…
764	defined $path or return;	968	defined $path or return;
765		969
766	unlink "$path.pst";	970	unlink "$path.pst";
767	};	971	};
768		972
769	attach_to_maps prio => -10000, package => cf::mapsupport::;	973	cf::map->attach (prio => -10000, package => cf::mapsupport::);
770		974
771	#############################################################################	975	#############################################################################
772	# load/save perl data associated with player->ob objects	976	# load/save perl data associated with player->ob objects
773		977
774	sub all_objects(@) {	978	sub all_objects(@) {
775	@_, map all_objects ($_->inv), @_	979	@_, map all_objects ($_->inv), @_
776	}	980	}
777		981
778	attach_to_players	982	# TODO: compatibility cruft, remove when no longer needed
		983	cf::player->attach (
779	on_load => sub {	984	on_load => sub {
780	my ($pl, $path) = @_;	985	my ($pl, $path) = @_;
781		986
782	for my $o (all_objects $pl->ob) {	987	for my $o (all_objects $pl->ob) {
783	if (my $value = $o->get_ob_key_value ("_perl_data")) {	988	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
785		990
786	%$o = %{ Storable::thaw pack "H*", $value };	991	%$o = %{ Storable::thaw pack "H*", $value };
787	}	992	}
788	}	993	}
789	},	994	},
790	;	995	);
791		996
792	#############################################################################	997	#############################################################################
793	# core extensions - in perl	998
		999	=head2 CORE EXTENSIONS
		1000
		1001	Functions and methods that extend core crossfire objects.
		1002
		1003	=head3 cf::player
		1004
		1005	=over 4
794		1006
795	=item cf::player::exists $login	1007	=item cf::player::exists $login
796		1008
797	Returns true when the given account exists.	1009	Returns true when the given account exists.
798		1010
…		…
801	sub cf::player::exists($) {	1013	sub cf::player::exists($) {
802	cf::player::find $_[0]	1014	cf::player::find $_[0]
803	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1015	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
804	}	1016	}
805		1017
		1018	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1019
		1020	Sends an ext reply to the player.
		1021
		1022	=cut
		1023
		1024	sub cf::player::ext_reply($$$%) {
		1025	my ($self, $id, %msg) = @_;
		1026
		1027	$msg{msgid} = $id;
		1028
		1029	$self->send ("ext " . to_json \%msg);
		1030	}
		1031
		1032	=back
		1033
		1034	=head3 cf::object::player
		1035
		1036	=over 4
		1037
806	=item $player->reply ($npc, $msg[, $flags])	1038	=item $player_object->reply ($npc, $msg[, $flags])
807		1039
808	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1040	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
809	can be C<undef>. Does the right thing when the player is currently in a	1041	can be C<undef>. Does the right thing when the player is currently in a
810	dialogue with the given NPC character.	1042	dialogue with the given NPC character.
811		1043
812	=cut	1044	=cut
813		1045
814	# rough implementation of a future "reply" method that works	1046	# rough implementation of a future "reply" method that works
815	# with dialog boxes.	1047	# with dialog boxes.
		1048	#TODO: the first argument must go, split into a $npc->reply_to ( method
816	sub cf::object::player::reply($$$;$) {	1049	sub cf::object::player::reply($$$;$) {
817	my ($self, $npc, $msg, $flags) = @_;	1050	my ($self, $npc, $msg, $flags) = @_;
818		1051
819	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	1052	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
820		1053
…		…
824	$msg = $npc->name . " says: $msg" if $npc;	1057	$msg = $npc->name . " says: $msg" if $npc;
825	$self->message ($msg, $flags);	1058	$self->message ($msg, $flags);
826	}	1059	}
827	}	1060	}
828		1061
829	=item $player->ext_reply ($msgid, $msgtype, %msg)	1062	=item $player_object->may ("access")
830		1063
831	Sends an ext reply to the player.	1064	Returns wether the given player is authorized to access resource "access"
		1065	(e.g. "command_wizcast").
832		1066
833	=cut	1067	=cut
834		1068
835	sub cf::player::ext_reply($$$%) {	1069	sub cf::object::player::may {
		1070	my ($self, $access) = @_;
		1071
		1072	$self->flag (cf::FLAG_WIZ) \|\|
		1073	(ref $cf::CFG{"may_$access"}
		1074	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1075	: $cf::CFG{"may_$access"})
		1076	}
		1077
		1078	=head3 cf::client
		1079
		1080	=over 4
		1081
		1082	=item $client->send_drawinfo ($text, $flags)
		1083
		1084	Sends a drawinfo packet to the client. Circumvents output buffering so
		1085	should not be used under normal circumstances.
		1086
		1087	=cut
		1088
		1089	sub cf::client::send_drawinfo {
		1090	my ($self, $text, $flags) = @_;
		1091
		1092	utf8::encode $text;
		1093	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1094	}
		1095
		1096
		1097	=item $success = $client->query ($flags, "text", \&cb)
		1098
		1099	Queues a query to the client, calling the given callback with
		1100	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1101	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1102
		1103	Queries can fail, so check the return code. Or don't, as queries will become
		1104	reliable at some point in the future.
		1105
		1106	=cut
		1107
		1108	sub cf::client::query {
		1109	my ($self, $flags, $text, $cb) = @_;
		1110
		1111	return unless $self->state == ST_PLAYING
		1112	\|\| $self->state == ST_SETUP
		1113	\|\| $self->state == ST_CUSTOM;
		1114
		1115	$self->state (ST_CUSTOM);
		1116
		1117	utf8::encode $text;
		1118	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1119
		1120	$self->send_packet ($self->{query_queue}[0][0])
		1121	if @{ $self->{query_queue} } == 1;
		1122	}
		1123
		1124	cf::client->attach (
		1125	on_reply => sub {
		1126	my ($ns, $msg) = @_;
		1127
		1128	# this weird shuffling is so that direct followup queries
		1129	# get handled first
		1130	my $queue = delete $ns->{query_queue};
		1131
		1132	(shift @$queue)->[1]->($msg);
		1133
		1134	push @{ $ns->{query_queue} }, @$queue;
		1135
		1136	if (@{ $ns->{query_queue} } == @$queue) {
		1137	if (@$queue) {
		1138	$ns->send_packet ($ns->{query_queue}[0][0]);
		1139	} else {
		1140	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1141	}
		1142	}
		1143	},
		1144	);
		1145
		1146	=item $client->coro (\&cb)
		1147
		1148	Create a new coroutine, running the specified callback. The coroutine will
		1149	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1150	or loss of connection).
		1151
		1152	=cut
		1153
		1154	sub cf::client::coro {
836	my ($self, $id, %msg) = @_;	1155	my ($self, $cb) = @_;
837		1156
838	$msg{msgid} = $id;	1157	my $coro; $coro = async {
		1158	eval {
		1159	$cb->();
		1160	};
		1161	warn $@ if $@;
		1162	};
839		1163
840	$self->send ("ext " . to_json \%msg);	1164	$coro->on_destroy (sub {
841	}	1165	delete $self->{_coro}{$coro+0};
		1166	});
842		1167
843	#############################################################################	1168	$self->{_coro}{$coro+0} = $coro;
844	# map scripting support	1169
		1170	$coro
		1171	}
		1172
		1173	cf::client->attach (
		1174	on_destroy => sub {
		1175	my ($ns) = @_;
		1176
		1177	$_->cancel for values %{ (delete $ns->{_coro}) \|\| {} };
		1178	},
		1179	);
		1180
		1181	=back
		1182
		1183
		1184	=head2 SAFE SCRIPTING
		1185
		1186	Functions that provide a safe environment to compile and execute
		1187	snippets of perl code without them endangering the safety of the server
		1188	itself. Looping constructs, I/O operators and other built-in functionality
		1189	is not available in the safe scripting environment, and the number of
		1190	functions and methods that can be called is greatly reduced.
		1191
		1192	=cut
845		1193
846	our $safe = new Safe "safe";	1194	our $safe = new Safe "safe";
847	our $safe_hole = new Safe::Hole;	1195	our $safe_hole = new Safe::Hole;
848		1196
849	$SIG{FPE} = 'IGNORE';	1197	$SIG{FPE} = 'IGNORE';
850		1198
851	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1199	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
852		1200
853	# here we export the classes and methods available to script code	1201	# here we export the classes and methods available to script code
854		1202
		1203	=pod
		1204
		1205	The following fucntions and emthods are available within a safe environment:
		1206
		1207	cf::object contr pay_amount pay_player map
		1208	cf::object::player player
		1209	cf::player peaceful
		1210	cf::map trigger
		1211
		1212	=cut
		1213
855	for (	1214	for (
856	["cf::object" => qw(contr pay_amount pay_player)],	1215	["cf::object" => qw(contr pay_amount pay_player map)],
857	["cf::object::player" => qw(player)],	1216	["cf::object::player" => qw(player)],
858	["cf::player" => qw(peaceful)],	1217	["cf::player" => qw(peaceful)],
		1218	["cf::map" => qw(trigger)],
859	) {	1219	) {
860	no strict 'refs';	1220	no strict 'refs';
861	my ($pkg, @funs) = @$_;	1221	my ($pkg, @funs) = @$_;
862	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1222	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
863	for @funs;	1223	for @funs;
864	}	1224	}
		1225
		1226	=over 4
		1227
		1228	=item @retval = safe_eval $code, [var => value, ...]
		1229
		1230	Compiled and executes the given perl code snippet. additional var/value
		1231	pairs result in temporary local (my) scalar variables of the given name
		1232	that are available in the code snippet. Example:
		1233
		1234	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1235
		1236	=cut
865		1237
866	sub safe_eval($;@) {	1238	sub safe_eval($;@) {
867	my ($code, %vars) = @_;	1239	my ($code, %vars) = @_;
868		1240
869	my $qcode = $code;	1241	my $qcode = $code;
…		…
892	}	1264	}
893		1265
894	wantarray ? @res : $res[0]	1266	wantarray ? @res : $res[0]
895	}	1267	}
896		1268
		1269	=item cf::register_script_function $function => $cb
		1270
		1271	Register a function that can be called from within map/npc scripts. The
		1272	function should be reasonably secure and should be put into a package name
		1273	like the extension.
		1274
		1275	Example: register a function that gets called whenever a map script calls
		1276	C<rent::overview>, as used by the C<rent> extension.
		1277
		1278	cf::register_script_function "rent::overview" => sub {
		1279	...
		1280	};
		1281
		1282	=cut
		1283
897	sub register_script_function {	1284	sub register_script_function {
898	my ($fun, $cb) = @_;	1285	my ($fun, $cb) = @_;
899		1286
900	no strict 'refs';	1287	no strict 'refs';
901	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1288	*{"safe::$fun"} = $safe_hole->wrap ($cb);
902	}	1289	}
903		1290
		1291	=back
		1292
		1293	=cut
		1294
		1295	#############################################################################
		1296
		1297	=head2 EXTENSION DATABASE SUPPORT
		1298
		1299	Crossfire maintains a very simple database for extension use. It can
		1300	currently store anything that can be serialised using Storable, which
		1301	excludes objects.
		1302
		1303	The parameter C<$family> should best start with the name of the extension
		1304	using it, it should be unique.
		1305
		1306	=over 4
		1307
		1308	=item $hashref = cf::db_get $family
		1309
		1310	Return a hashref for use by the extension C<$family>, which can be
		1311	modified. After modifications, you have to call C<cf::db_dirty> or
		1312	C<cf::db_sync>.
		1313
		1314	=item $value = cf::db_get $family => $key
		1315
		1316	Returns a single value from the database
		1317
		1318	=item cf::db_put $family => $hashref
		1319
		1320	Stores the given family hashref into the database. Updates are delayed, if
		1321	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1322
		1323	=item cf::db_put $family => $key => $value
		1324
		1325	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1326	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1327
		1328	=item cf::db_dirty
		1329
		1330	Marks the database as dirty, to be updated at a later time.
		1331
		1332	=item cf::db_sync
		1333
		1334	Immediately write the database to disk I<if it is dirty>.
		1335
		1336	=cut
		1337
		1338	our $DB;
		1339
		1340	{
		1341	my $path = cf::localdir . "/database.pst";
		1342
		1343	sub db_load() {
		1344	warn "loading database $path\n";#d# remove later
		1345	$DB = stat $path ? Storable::retrieve $path : { };
		1346	}
		1347
		1348	my $pid;
		1349
		1350	sub db_save() {
		1351	warn "saving database $path\n";#d# remove later
		1352	waitpid $pid, 0 if $pid;
		1353	if (0 == ($pid = fork)) {
		1354	$DB->{_meta}{version} = 1;
		1355	Storable::nstore $DB, "$path~";
		1356	rename "$path~", $path;
		1357	cf::_exit 0 if defined $pid;
		1358	}
		1359	}
		1360
		1361	my $dirty;
		1362
		1363	sub db_sync() {
		1364	db_save if $dirty;
		1365	undef $dirty;
		1366	}
		1367
		1368	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1369	db_sync;
		1370	});
		1371
		1372	sub db_dirty() {
		1373	$dirty = 1;
		1374	$idle->start;
		1375	}
		1376
		1377	sub db_get($;$) {
		1378	@_ >= 2
		1379	? $DB->{$_[0]}{$_[1]}
		1380	: ($DB->{$_[0]} \|\|= { })
		1381	}
		1382
		1383	sub db_put($$;$) {
		1384	if (@_ >= 3) {
		1385	$DB->{$_[0]}{$_[1]} = $_[2];
		1386	} else {
		1387	$DB->{$_[0]} = $_[1];
		1388	}
		1389	db_dirty;
		1390	}
		1391
		1392	cf::global->attach (
		1393	prio => 10000,
		1394	on_cleanup => sub {
		1395	db_sync;
		1396	},
		1397	);
		1398	}
		1399
904	#############################################################################	1400	#############################################################################
905	# the server's main()	1401	# the server's main()
906		1402
		1403	sub cfg_load {
		1404	open my $fh, "<:utf8", cf::confdir . "/config"
		1405	or return;
		1406
		1407	local $/;
		1408	*CFG = YAML::Syck::Load <$fh>;
		1409	}
		1410
907	sub main {	1411	sub main {
		1412	# we must not ever block the main coroutine
		1413	local $Coro::idle = sub {
		1414	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1415	(Coro::unblock_sub {
		1416	Event::one_event;
		1417	})->();
		1418	};
		1419
		1420	cfg_load;
		1421	db_load;
		1422	load_extensions;
908	Event::loop;	1423	Event::loop;
909	}	1424	}
910		1425
911	#############################################################################	1426	#############################################################################
912	# initialisation	1427	# initialisation
913		1428
		1429	sub perl_reload() {
		1430	# can/must only be called in main
		1431	if ($Coro::current != $Coro::main) {
		1432	warn "can only reload from main coroutine\n";
		1433	return;
		1434	}
		1435
		1436	warn "reloading...";
		1437
		1438	local $FREEZE = 1;
		1439	cf::emergency_save;
		1440
		1441	eval {
		1442	# if anything goes wrong in here, we should simply crash as we already saved
		1443
		1444	# cancel all watchers
		1445	for (Event::all_watchers) {
		1446	$_->cancel if $_->data & WF_AUTOCANCEL;
		1447	}
		1448
		1449	# cancel all extension coros
		1450	$_->cancel for values %EXT_CORO;
		1451	%EXT_CORO = ();
		1452
		1453	# unload all extensions
		1454	for (@exts) {
		1455	warn "unloading <$_>";
		1456	unload_extension $_;
		1457	}
		1458
		1459	# unload all modules loaded from $LIBDIR
		1460	while (my ($k, $v) = each %INC) {
		1461	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1462
		1463	warn "removing <$k>";
		1464	delete $INC{$k};
		1465
		1466	$k =~ s/\.pm$//;
		1467	$k =~ s/\//::/g;
		1468
		1469	if (my $cb = $k->can ("unload_module")) {
		1470	$cb->();
		1471	}
		1472
		1473	Symbol::delete_package $k;
		1474	}
		1475
		1476	# sync database to disk
		1477	cf::db_sync;
		1478	IO::AIO::flush;
		1479
		1480	# get rid of safe::, as good as possible
		1481	Symbol::delete_package "safe::$_"
		1482	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1483
		1484	# remove register_script_function callbacks
		1485	# TODO
		1486
		1487	# unload cf.pm "a bit"
		1488	delete $INC{"cf.pm"};
		1489
		1490	# don't, removes xs symbols, too,
		1491	# and global variables created in xs
		1492	#Symbol::delete_package __PACKAGE__;
		1493
		1494	# reload cf.pm
		1495	warn "reloading cf.pm";
		1496	require cf;
		1497	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1498
		1499	# load config and database again
		1500	cf::cfg_load;
		1501	cf::db_load;
		1502
		1503	# load extensions
		1504	warn "load extensions";
		1505	cf::load_extensions;
		1506
		1507	# reattach attachments to objects
		1508	warn "reattach";
		1509	_global_reattach;
		1510	};
		1511
		1512	if ($@) {
		1513	warn $@;
		1514	warn "error while reloading, exiting.";
		1515	exit 1;
		1516	}
		1517
		1518	warn "reloaded successfully";
		1519	};
		1520
		1521	#############################################################################
		1522
		1523	unless ($LINK_MAP) {
		1524	$LINK_MAP = cf::map::new;
		1525
		1526	$LINK_MAP->width (41);
		1527	$LINK_MAP->height (41);
		1528	$LINK_MAP->alloc;
		1529	$LINK_MAP->path ("{link}");
		1530	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		1531	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1532	}
		1533
914	register "<global>", __PACKAGE__;	1534	register "<global>", __PACKAGE__;
915		1535
		1536	register_command "perl-reload" => sub {
		1537	my ($who, $arg) = @_;
		1538
		1539	if ($who->flag (FLAG_WIZ)) {
		1540	$who->message ("start of reload.");
		1541	perl_reload;
		1542	$who->message ("end of reload.");
		1543	}
		1544	};
		1545
916	unshift @INC, $LIBDIR;	1546	unshift @INC, $LIBDIR;
917		1547
918	load_extensions;
919
920	$TICK_WATCHER = Event->timer (	1548	$TICK_WATCHER = Event->timer (
		1549	reentrant => 0,
921	prio => 1,	1550	prio => 0,
922	at => $NEXT_TICK \|\| 1,	1551	at => $NEXT_TICK \|\| $TICK,
		1552	data => WF_AUTOCANCEL,
923	cb => sub {	1553	cb => sub {
		1554	unless ($FREEZE) {
924	cf::server_tick; # one server iteration	1555	cf::server_tick; # one server iteration
		1556	$RUNTIME += $TICK;
		1557	}
925		1558
926	my $NOW = Event::time;
927	$NEXT_TICK += $TICK;	1559	$NEXT_TICK += $TICK;
928		1560
929	# if we are delayed by four ticks, skip them all	1561	# if we are delayed by four ticks or more, skip them all
930	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1562	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
931		1563
932	$TICK_WATCHER->at ($NEXT_TICK);	1564	$TICK_WATCHER->at ($NEXT_TICK);
933	$TICK_WATCHER->start;	1565	$TICK_WATCHER->start;
934	},	1566	},
935	);	1567	);
936		1568
937	_reload_2;	1569	IO::AIO::max_poll_time $TICK * 0.2;
		1570
		1571	Event->io (
		1572	fd => IO::AIO::poll_fileno,
		1573	poll => 'r',
		1574	prio => 5,
		1575	data => WF_AUTOCANCEL,
		1576	cb => \&IO::AIO::poll_cb,
		1577	);
		1578
		1579	Event->timer (
		1580	data => WF_AUTOCANCEL,
		1581	after => 0,
		1582	interval => 10,
		1583	cb => sub {
		1584	(Coro::unblock_sub {
		1585	write_runtime
		1586	or warn "ERROR: unable to write runtime file: $!";
		1587	})->();
		1588	},
		1589	);
938		1590
939	1	1591	1
940		1592

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.58 by root, Wed Aug 30 12:08:15 2006 UTC vs. Revision 1.109 by root, Sun Dec 31 22:23:12 2006 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.58 by root, Wed Aug 30 12:08:15 2006 UTC vs.
Revision 1.109 by root, Sun Dec 31 22:23:12 2006 UTC