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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 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)) {	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~", $runtime
		267	and return;
		268
		269	1
		270	}
		271
		272	=back
		273
		274	=cut
		275
107	#############################################################################	276	#############################################################################
108	# "new" plug-in system
109		277
		278	package cf::path;
		279
		280	sub new {
		281	my ($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+).
		395
		396	=over 4
		397
110	=item $object->attach ($attachment, key => $value...)	398	=item $attachable->attach ($attachment, key => $value...)
111		399
112	Attach a pre-registered attachment to an object.	400	=item $attachable->detach ($attachment)
113		401
114	=item $player->attach ($attachment, key => $value...)	402	Attach/detach a pre-registered attachment to a specific object and give it
		403	the specified key/value pairs as arguments.
115		404
116	Attach a pre-registered attachment to a player.	405	Example, attach a minesweeper attachment to the given object, making it a
		406	10x10 minesweeper game:
117		407
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	408	$obj->attach (minesweeper => width => 10, height => 10);
119		409
120	Attach a pre-registered attachment to a map.	410	=item $bool = $attachable->attached ($name)
121		411
122	=item cf::attach_global ...	412	Checks wether the named attachment is currently attached to the object.
123		413
124	Attach handlers for global events.	414	=item cf::CLASS->attach ...
125		415
126	This and all following C<attach_*>-functions expect any number of the	416	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	417
		418	Define an anonymous attachment and attach it to all objects of the given
		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:
128		452
129	=over 4	453	=over 4
130		454
131	=item prio => $number	455	=item prio => $number
132		456
…		…
134	by another C<prio> setting). Lower priority handlers get executed	458	by another C<prio> setting). Lower priority handlers get executed
135	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
136	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
137	unless you know what you are doing.	461	unless you know what you are doing.
138		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
139	=item on_I<event> => \&cb	469	=item on_I<event> => \&cb
140		470
141	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
142	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
143	handlers are recognised generally depends on the type of object these	473	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	482	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	483	object/class are recognised.
154		484
155	=back	485	=back
156		486
157	=item cf::attach_to_type $object_type, $subtype, ...	487	Example, define an attachment called "sockpuppet" that calls the given
		488	event handler when a monster attacks:
158		489
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	490	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	491	on_skill_attack => sub {
161	type.	492	my ($self, $victim) = @_;
		493	...
		494	}
		495	}
162		496
163	=item cf::attach_to_objects ...	497	=item $attachable->valid
164		498
165	Attach handlers to all objects. Do not use this except for debugging or	499	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	500	C-level object still exists. If you try to access an object that has no
167	the game.	501	valid C counterpart anymore you get an exception at runtime. This method
168		502	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	503	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		504
179	=cut	505	=cut
180		506
181	# the following variables are defined in .xs and must not be re-created	507	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	508	our @CB_GLOBAL = (); # registry for all global events
		509	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	510	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	511	our @CB_PLAYER = ();
		512	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	513	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	514	our @CB_MAP = ();
187		515
188	my %attachment;	516	my %attachment;
189		517
190	sub _attach_cb($\%$$$) {	518	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	519	my ($registry, $event, $prio, $cb) = @_;
192		520
193	use sort 'stable';	521	use sort 'stable';
194		522
195	$cb = [$prio, $cb];	523	$cb = [$prio, $cb];
196		524
197	@{$registry->[$event]} = sort	525	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	526	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] \|\| []}, $cb;	527	@{$registry->[$event] \|\| []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	528	}
		529
		530	# hack
		531	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		532
204	# attach handles attaching event callbacks	533	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	534	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	535	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	536	sub _attach {
208	my ($registry, $klass, @arg) = @_;	537	my ($registry, $klass, @arg) = @_;
209		538
		539	my $object_type;
210	my $prio = 0;	540	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	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	}
218		547
219	while (@arg) {	548	while (@arg) {
220	my $type = shift @arg;	549	my $type = shift @arg;
221		550
222	if ($type eq "prio") {	551	if ($type eq "prio") {
223	$prio = shift @arg;	552	$prio = shift @arg;
224		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
225	} elsif ($type eq "package") {	563	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	564	my $pkg = shift @arg;
227		565
228	while (my ($name, $id) = each %cb_id) {	566	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	567	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	568	_attach_cb $registry, $id, $prio, $cb;
231	}	569	}
232	}	570	}
233		571
234	} elsif (exists $cb_id{$type}) {	572	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	573	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		574
237	} elsif (ref $type) {	575	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	576	warn "attaching objects not supported, ignoring.\n";
239		577
240	} else {	578	} else {
241	shift @arg;	579	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	580	warn "attach argument '$type' not supported, ignoring.\n";
243	}	581	}
244	}	582	}
245
246	\%undo
247	}	583	}
248		584
249	sub _attach_attachment {	585	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	586	my ($obj, $name, %arg) = @_;
251		587
252	my $res;	588	return if exists $obj->{_attachment}{$name};
253		589
254	if (my $attach = $attachment{$name}) {	590	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	591	my $registry = $obj->registry;
256		592
257	for (@$attach) {	593	for (@$attach) {
258	my ($klass, @attach) = @$_;	594	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	595	_attach $registry, $klass, @attach;
260	}	596	}
261		597
262	$obj->{$name} = \%arg;	598	$obj->{$name} = \%arg;
263	} else {	599	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	600	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	601	}
266		602
267	push @{$obj->{_attachment}}, $name;	603	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	604	}
272		605
273	sub cf::object::attach {	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 {
274	my ($obj, $name, %arg) = @_;	616	my ($obj, $name) = @_;
275		617
276	_attach_attachment $obj, $name, %arg;	618	if (ref $obj) {
277	}	619	delete $obj->{_attachment}{$name};
		620	reattach ($obj);
		621	} else {
		622	Carp::croak "cannot, currently, detach class attachments";
		623	}
		624	};
278		625
279	sub cf::player::attach {	626	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	627	my ($obj, $name) = @_;
281		628
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	629	exists $obj->{_attachment}{$name}
283	}	630	}
284		631
285	sub cf::map::attach {	632	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	633	eval "#line " . __LINE__ . " 'cf.pm'
		634	sub cf::\L$klass\E::_attach_registry {
		635	(\\\@CB_$klass, KLASS_$klass)
		636	}
287		637
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	638	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	639	my \$name = shift;
316		640
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	641	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		642	}
		643	";
		644	die if $@;
318	}	645	}
319		646
320	our $override;	647	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	648	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		649
…		…
336	for (@$callbacks) {	663	for (@$callbacks) {
337	eval { &{$_->[1]} };	664	eval { &{$_->[1]} };
338		665
339	if ($@) {	666	if ($@) {
340	warn "$@";	667	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	668	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	669	override;
343	}	670	}
344		671
345	return 1 if $override;	672	return 1 if $override;
346	}	673	}
347		674
348	0	675	0
349	}	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
		688	=back
		689
		690	=cut
350		691
351	#############################################################################	692	#############################################################################
352	# object support	693	# object support
353		694
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args \|\| {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	695	sub reattach {
		696	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	697	my ($obj) = @_;
		698
369	my $registry = $obj->registry;	699	my $registry = $obj->registry;
370		700
371	@$registry = ();	701	@$registry = ();
372		702
373	delete $obj->{_attachment} unless @{ $obj->{_attachment} \|\| [] };	703	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
374		704
375	for my $name (@{ $obj->{_attachment} \|\| [] }) {	705	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
376	if (my $attach = $attachment{$name}) {	706	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	707	for (@$attach) {
378	my ($klass, @attach) = @$_;	708	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	709	_attach $registry, $klass, @attach;
380	}	710	}
381	} else {	711	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	712	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	713	}
384	}	714	}
385	}	715	}
386		716
		717	cf::attachable->attach (
		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,
		731	on_clone => sub {
		732	my ($src, $dst) = @_;
		733
		734	@{$dst->registry} = @{$src->registry};
		735
		736	%$dst = %$src;
		737
		738	%{$dst->{_attachment}} = %{$src->{_attachment}}
		739	if exists $src->{_attachment};
		740	},
		741	);
		742
387	sub object_freezer_save {	743	sub object_freezer_save {
388	my ($filename, $objs) = @_;	744	my ($filename, $rdata, $objs) = @_;
389		745
390	$filename .= ".pst";	746	sync_job {
		747	if (length $$rdata) {
		748	warn sprintf "saving %s (%d,%d)\n",
		749	$filename, length $$rdata, scalar @$objs;
391		750
392	if (@$objs) {	751	if (my $fh = aio_open "$filename~", O_WRONLY \| O_CREAT, 0600) {
393	open my $fh, ">:raw", "$filename~";	752	chmod SAVE_MODE, $fh;
394	chmod $fh, SAVE_MODE;	753	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	754	aio_fsync $fh;
396	close $fh;	755	close $fh;
		756
		757	if (@$objs) {
		758	if (my $fh = aio_open "$filename.pst~", O_WRONLY \| O_CREAT, 0600) {
		759	chmod SAVE_MODE, $fh;
		760	my $data = Storable::nfreeze { version => 1, objs => $objs };
		761	aio_write $fh, 0, (length $data), $data, 0;
		762	aio_fsync $fh;
		763	close $fh;
		764	aio_rename "$filename.pst~", "$filename.pst";
		765	}
		766	} else {
		767	aio_unlink "$filename.pst";
		768	}
		769
397	rename "$filename~", $filename;	770	aio_rename "$filename~", $filename;
		771	} else {
		772	warn "FATAL: $filename~: $!\n";
		773	}
398	} else {	774	} else {
399	unlink $filename;	775	aio_unlink $filename;
		776	aio_unlink "$filename.pst";
		777	}
400	}	778	}
		779	}
		780
		781	sub object_freezer_as_string {
		782	my ($rdata, $objs) = @_;
		783
		784	use Data::Dumper;
		785
		786	$$rdata . Dumper $objs
401	}	787	}
402		788
403	sub object_thawer_load {	789	sub object_thawer_load {
404	my ($filename) = @_;	790	my ($filename) = @_;
405		791
406	open my $fh, "<:raw:perlio", "$filename.pst"	792	my ($data, $av);
		793
		794	(aio_load $filename, $data) >= 0
407	or return;	795	or return;
408		796
		797	unless (aio_stat "$filename.pst") {
		798	(aio_load "$filename.pst", $av) >= 0
		799	or return;
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }	800	$av = eval { (Storable::thaw <$av>)->{objs} };
410	}
411
412	attach_to_objects
413	prio => -1000000,
414	on_clone => sub {
415	my ($src, $dst) = @_;
416
417	@{$dst->registry} = @{$src->registry};
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423	},	801	}
424	;	802
		803	return ($data, $av);
		804	}
425		805
426	#############################################################################	806	#############################################################################
427	# old plug-in events	807	# command handling &c
428		808
429	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		810
433	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
434	or return;	812	$name.
435		813
436	&$cb	814	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		815
458	sub register_command {	816	sub register_command {
459	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
460		818
461	my $caller = caller;	819	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
463		821
464	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
467		833
468	sub register_extcmd {	834	sub register_extcmd {
469	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
470		836
471	my $caller = caller;	837	my $caller = caller;
472	#warn "registering extcmd '$name' to '$caller'";	838	#warn "registering extcmd '$name' to '$caller'";
473		839
474	$extcmd{$name} = [$cb, $caller];	840	$EXTCMD{$name} = [$cb, $caller];
475	}	841	}
		842
		843	cf::player->attach (
		844	on_command => sub {
		845	my ($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	);
476		874
477	sub register {	875	sub register {
478	my ($base, $pkg) = @_;	876	my ($base, $pkg) = @_;
479		877
480	#TODO	878	#TODO
…		…
499	. "#line 1 \"$path\"\n{\n"	897	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })	898	. (do { local $/; <$fh> })
501	. "\n};\n1";	899	. "\n};\n1";
502		900
503	eval $source	901	eval $source
504	or die "$path: $@";	902	or die $@ ? "$path: $@\n"
		903	: "extension disabled.\n";
505		904
506	push @exts, $pkg;	905	push @exts, $pkg;
507	$ext_pkg{$base} = $pkg;	906	$ext_pkg{$base} = $pkg;
508		907
509	# no strict 'refs';	908	# no strict 'refs';
…		…
522	# for my $idx (0 .. $#PLUGIN_EVENT) {	921	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};	922	# delete $hook[$idx]{$pkg};
524	# }	923	# }
525		924
526	# remove commands	925	# remove commands
527	for my $name (keys %command) {	926	for my $name (keys %COMMAND) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	927	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
529		928
530	if (@cb) {	929	if (@cb) {
531	$command{$name} = \@cb;	930	$COMMAND{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {	931	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};	932	delete $COMMAND{$name};
536	}	933	}
537	}	934	}
538		935
539	# remove extcmds	936	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	937	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
541	delete $extcmd{$name};	938	delete $EXTCMD{$name};
542	}	939	}
543		940
544	if (my $cb = $pkg->can ("unload")) {	941	if (my $cb = $pkg->can ("unload")) {
545	eval {	942	eval {
546	$cb->($pkg);	943	$cb->($pkg);
…		…
550		947
551	Symbol::delete_package $pkg;	948	Symbol::delete_package $pkg;
552	}	949	}
553		950
554	sub load_extensions {	951	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {	952	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;	953	next unless -r $ext;
559	eval {	954	eval {
560	load_extension $ext;	955	load_extension $ext;
561	1	956	1
562	} or warn "$ext not loaded: $@";	957	} or warn "$ext not loaded: $@";
563	}	958	}
564	}	959	}
565		960
566	sub _perl_reload(&) {
567	my ($msg) = @_;
568
569	$msg->("reloading...");
570
571	eval {
572	# 1. cancel all watchers
573	$_->cancel for Event::all_watchers;
574
575	# 2. unload all extensions
576	for (@exts) {
577	$msg->("unloading <$_>");
578	unload_extension $_;
579	}
580
581	# 3. unload all modules loaded from $LIBDIR
582	while (my ($k, $v) = each %INC) {
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
584
585	$msg->("removing <$k>");
586	delete $INC{$k};
587
588	$k =~ s/\.pm$//;
589	$k =~ s/\//::/g;
590
591	if (my $cb = $k->can ("unload_module")) {
592	$cb->();
593	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604
605	# 6. unload cf.pm "a bit"
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};
616	$msg->($@) if $@;
617
618	$msg->("reloaded");
619	};
620
621	sub perl_reload() {
622	_perl_reload {
623	warn $_[0];
624	print "$_[0]\n";
625	};
626	}
627
628	register_command "perl-reload", 0, sub {
629	my ($who, $arg) = @_;
630
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};
636	}
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {
645	my ($pl, $buf) = @_;
646
647	my $msg = eval { from_json $buf };
648
649	if (ref $msg) {
650	if (my $cb = $extcmd{$msg->{msgtype}}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {
652	$pl->ext_reply ($msg->{msgid}, %reply);
653	}
654	}
655	} else {
656	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
657	}
658
659	cf::override;
660	},
661	;
662
663	#############################################################################	961	#############################################################################
664	# load/save/clean perl data associated with a map	962	# load/save/clean perl data associated with a map
665		963
666	*cf::mapsupport::on_clean = sub {	964	*cf::mapsupport::on_clean = sub {
667	my ($map) = @_;	965	my ($map) = @_;
668		966
669	my $path = $map->tmpname;	967	my $path = $map->tmpname;
670	defined $path or return;	968	defined $path or return;
671		969
672	unlink "$path.cfperl";
673	unlink "$path.pst";	970	unlink "$path.pst";
674	};	971	};
675		972
676	*cf::mapsupport::on_swapin =
677	*cf::mapsupport::on_load = sub {
678	my ($map) = @_;
679
680	my $path = $map->tmpname;
681	$path = $map->path unless defined $path;
682
683	open my $fh, "<:raw", "$path.cfperl"
684	or return; # no perl data
685
686	my $data = Storable::thaw do { local $/; <$fh> };
687
688	$data->{version} <= 1
689	or return; # too new
690
691	$map->_set_obs ($data->{obs});
692	};
693
694	attach_to_maps prio => -10000, package => cf::mapsupport::;	973	cf::map->attach (prio => -10000, package => cf::mapsupport::);
695		974
696	#############################################################################	975	#############################################################################
697	# load/save perl data associated with player->ob objects	976	# load/save perl data associated with player->ob objects
698		977
699	sub all_objects(@) {	978	sub all_objects(@) {
700	@_, map all_objects ($_->inv), @_	979	@_, map all_objects ($_->inv), @_
701	}	980	}
702		981
703	attach_to_players	982	# TODO: compatibility cruft, remove when no longer needed
		983	cf::player->attach (
704	on_load => sub {	984	on_load => sub {
705	my ($pl, $path) = @_;	985	my ($pl, $path) = @_;
706		986
707	for my $o (all_objects $pl->ob) {	987	for my $o (all_objects $pl->ob) {
708	if (my $value = $o->get_ob_key_value ("_perl_data")) {	988	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
710		990
711	%$o = %{ Storable::thaw pack "H*", $value };	991	%$o = %{ Storable::thaw pack "H*", $value };
712	}	992	}
713	}	993	}
714	},	994	},
715	;	995	);
716		996
717	#############################################################################	997	#############################################################################
718	# 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
719		1006
720	=item cf::player::exists $login	1007	=item cf::player::exists $login
721		1008
722	Returns true when the given account exists.	1009	Returns true when the given account exists.
723		1010
…		…
726	sub cf::player::exists($) {	1013	sub cf::player::exists($) {
727	cf::player::find $_[0]	1014	cf::player::find $_[0]
728	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1015	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
729	}	1016	}
730		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($$$%) {
		1025	my ($self, $id, %msg) = @_;
		1026
		1027	$msg{msgid} = $id;
		1028
		1029	$self->send ("ext " . to_json \%msg);
		1030	}
		1031
		1032	=back
		1033
		1034	=head3 cf::object::player
		1035
		1036	=over 4
		1037
731	=item $player->reply ($npc, $msg[, $flags])	1038	=item $player_object->reply ($npc, $msg[, $flags])
732		1039
733	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1040	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
734	can be C<undef>. Does the right thing when the player is currently in a	1041	can be C<undef>. Does the right thing when the player is currently in a
735	dialogue with the given NPC character.	1042	dialogue with the given NPC character.
736		1043
737	=cut	1044	=cut
738		1045
739	# rough implementation of a future "reply" method that works	1046	# rough implementation of a future "reply" method that works
740	# with dialog boxes.	1047	# with dialog boxes.
		1048	#TODO: the first argument must go, split into a $npc->reply_to ( method
741	sub cf::object::player::reply($$$;$) {	1049	sub cf::object::player::reply($$$;$) {
742	my ($self, $npc, $msg, $flags) = @_;	1050	my ($self, $npc, $msg, $flags) = @_;
743		1051
744	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	1052	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
745		1053
…		…
749	$msg = $npc->name . " says: $msg" if $npc;	1057	$msg = $npc->name . " says: $msg" if $npc;
750	$self->message ($msg, $flags);	1058	$self->message ($msg, $flags);
751	}	1059	}
752	}	1060	}
753		1061
754	=item $player->ext_reply ($msgid, $msgtype, %msg)	1062	=item $player_object->may ("access")
755		1063
756	Sends an ext reply to the player.	1064	Returns wether the given player is authorized to access resource "access"
		1065	(e.g. "command_wizcast").
757		1066
758	=cut	1067	=cut
759		1068
760	sub cf::player::ext_reply($$$%) {	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 $client->coro (\&cb)
		1147
		1148	Create a new coroutine, running the specified callback. The coroutine will
		1149	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1150	or loss of connection).
		1151
		1152	=cut
		1153
		1154	sub cf::client::coro {
761	my ($self, $id, %msg) = @_;	1155	my ($self, $cb) = @_;
762		1156
763	$msg{msgid} = $id;	1157	my $coro; $coro = async {
		1158	eval {
		1159	$cb->();
		1160	};
		1161	warn $@ if $@;
		1162	};
764		1163
765	$self->send ("ext " . to_json \%msg);	1164	$coro->on_destroy (sub {
766	}	1165	delete $self->{_coro}{$coro+0};
		1166	});
767		1167
768	#############################################################################	1168	$self->{_coro}{$coro+0} = $coro;
769	# 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
770		1193
771	our $safe = new Safe "safe";	1194	our $safe = new Safe "safe";
772	our $safe_hole = new Safe::Hole;	1195	our $safe_hole = new Safe::Hole;
773		1196
774	$SIG{FPE} = 'IGNORE';	1197	$SIG{FPE} = 'IGNORE';
775		1198
776	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1199	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
777		1200
778	# here we export the classes and methods available to script code	1201	# here we export the classes and methods available to script code
779		1202
		1203	=pod
		1204
		1205	The following fucntions and emthods are available within a safe environment:
		1206
		1207	cf::object contr pay_amount pay_player map
		1208	cf::object::player player
		1209	cf::player peaceful
		1210	cf::map trigger
		1211
		1212	=cut
		1213
780	for (	1214	for (
781	["cf::object" => qw(contr pay_amount pay_player)],	1215	["cf::object" => qw(contr pay_amount pay_player map)],
782	["cf::object::player" => qw(player)],	1216	["cf::object::player" => qw(player)],
783	["cf::player" => qw(peaceful)],	1217	["cf::player" => qw(peaceful)],
		1218	["cf::map" => qw(trigger)],
784	) {	1219	) {
785	no strict 'refs';	1220	no strict 'refs';
786	my ($pkg, @funs) = @$_;	1221	my ($pkg, @funs) = @$_;
787	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1222	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
788	for @funs;	1223	for @funs;
789	}	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 + $second', first => 1, second => 4;
		1235
		1236	=cut
790		1237
791	sub safe_eval($;@) {	1238	sub safe_eval($;@) {
792	my ($code, %vars) = @_;	1239	my ($code, %vars) = @_;
793		1240
794	my $qcode = $code;	1241	my $qcode = $code;
…		…
817	}	1264	}
818		1265
819	wantarray ? @res : $res[0]	1266	wantarray ? @res : $res[0]
820	}	1267	}
821		1268
		1269	=item cf::register_script_function $function => $cb
		1270
		1271	Register a function that can be called from within map/npc scripts. The
		1272	function should be reasonably secure and should be put into a package name
		1273	like the extension.
		1274
		1275	Example: register a function that gets called whenever a map script calls
		1276	C<rent::overview>, as used by the C<rent> extension.
		1277
		1278	cf::register_script_function "rent::overview" => sub {
		1279	...
		1280	};
		1281
		1282	=cut
		1283
822	sub register_script_function {	1284	sub register_script_function {
823	my ($fun, $cb) = @_;	1285	my ($fun, $cb) = @_;
824		1286
825	no strict 'refs';	1287	no strict 'refs';
826	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1288	*{"safe::$fun"} = $safe_hole->wrap ($cb);
827	}	1289	}
828		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
829	#############################################################################	1400	#############################################################################
830	# the server's main()	1401	# the server's main()
831		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
832	sub main {	1411	sub main {
		1412	# we must not ever block the main coroutine
		1413	local $Coro::idle = sub {
		1414	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1415	(Coro::unblock_sub {
		1416	Event::one_event;
		1417	})->();
		1418	};
		1419
		1420	cfg_load;
		1421	db_load;
		1422	load_extensions;
833	Event::loop;	1423	Event::loop;
834	}	1424	}
835		1425
836	#############################################################################	1426	#############################################################################
837	# initialisation	1427	# initialisation
838		1428
		1429	sub perl_reload() {
		1430	# can/must only be called in main
		1431	if ($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	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1532	}
		1533
839	register "<global>", __PACKAGE__;	1534	register "<global>", __PACKAGE__;
840		1535
		1536	register_command "perl-reload" => sub {
		1537	my ($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
841	unshift @INC, $LIBDIR;	1546	unshift @INC, $LIBDIR;
842		1547
843	load_extensions;
844
845	$TICK_WATCHER = Event->timer (	1548	$TICK_WATCHER = Event->timer (
		1549	reentrant => 0,
846	prio => 1,	1550	prio => 0,
847	at => $NEXT_TICK \|\| 1,	1551	at => $NEXT_TICK \|\| $TICK,
		1552	data => WF_AUTOCANCEL,
848	cb => sub {	1553	cb => sub {
		1554	unless ($FREEZE) {
849	cf::server_tick; # one server iteration	1555	cf::server_tick; # one server iteration
		1556	$RUNTIME += $TICK;
		1557	}
850		1558
851	my $NOW = Event::time;
852	$NEXT_TICK += $TICK;	1559	$NEXT_TICK += $TICK;
853		1560
854	# if we are delayed by four ticks, skip them all	1561	# if we are delayed by four ticks or more, skip them all
855	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1562	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
856		1563
857	$TICK_WATCHER->at ($NEXT_TICK);	1564	$TICK_WATCHER->at ($NEXT_TICK);
858	$TICK_WATCHER->start;	1565	$TICK_WATCHER->start;
859	},	1566	},
860	);	1567	);
861		1568
862	_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	);
863		1590
864	1	1591	1
865		1592

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.49 by root, Sun Aug 27 17:59:26 2006 UTC vs. Revision 1.109 by root, Sun Dec 31 22:23:12 2006 UTC

Diff Legend

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 2006 UTC vs.
Revision 1.109 by root, Sun Dec 31 22:23:12 2006 UTC