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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.28 by root, Sun Jul 30 17:42:14 2006 UTC vs.
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC

…		…
5	use Storable;	5	use Storable;
6	use Opcode;	6	use Opcode;
7	use Safe;	7	use Safe;
8	use Safe::Hole;	8	use Safe::Hole;
9		9
		10	use Time::HiRes;
10	use Event;	11	use Event;
11	$Event::Eval = 1; # no idea why this is required, but it is	12	$Event::Eval = 1; # no idea why this is required, but it is
12		13
13	use strict;	14	use strict;
14		15
		16	_init_vars;
		17
15	our %COMMAND;	18	our %COMMAND = ();
16	our @EVENT;	19	our @EVENT;
17	our %PROP_TYPE;
18	our %PROP_IDX;
19	our $LIBDIR = maps_directory "perl";	20	our $LIBDIR = maps_directory "perl";
20		21
		22	our $TICK = MAX_TIME * 1e-6;
		23	our $TICK_WATCHER;
		24	our $NEXT_TICK;
		25
		26	our %CFG;
		27
		28	#############################################################################
		29
		30	=head2 GLOBAL VARIABLES
		31
		32	=over 4
		33
		34	=item $cf::LIBDIR
		35
		36	The perl library directory, where extensions and cf-specific modules can
		37	be found. It will be added to C<@INC> automatically.
		38
		39	=item $cf::TICK
		40
		41	The interval between server ticks, in seconds.
		42
		43	=item %cf::CFG
		44
		45	Configuration for the server, loaded from C</etc/crossfire/config>, or
		46	from wherever your confdir points to.
		47
		48	=back
		49
		50	=cut
		51
21	BEGIN {	52	BEGIN {
22	@EVENT = map lc, @EVENT;
23
24	*CORE::GLOBAL::warn = sub {	53	*CORE::GLOBAL::warn = sub {
25	my $msg = join "", @_;	54	my $msg = join "", @_;
26	$msg .= "\n"	55	$msg .= "\n"
27	unless $msg =~ /\n$/;	56	unless $msg =~ /\n$/;
28		57
29	print STDERR "cfperl: $msg";	58	print STDERR "cfperl: $msg";
30	LOG llevError, "cfperl: $msg";	59	LOG llevError, "cfperl: $msg";
31	};	60	};
32	}	61	}
33		62
34	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
35		64
36	# generate property mutators	65	# we bless all objects into (empty) derived classes to force a method lookup
37	sub prop_gen {	66	# within the Safe compartment.
38	my ($prefix, $class) = @_;	67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {
39
40	no strict 'refs';	68	no strict 'refs';
41
42	for my $prop (keys %PROP_TYPE) {
43	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
44	my $sub = lc $1;
45
46	my $type = $PROP_TYPE{$prop};
47	my $idx = $PROP_IDX {$prop};
48
49	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
50	$_[0]->get_property ($type, $idx)
51	};
52
53	*{"$class\::set_$sub"} = sub {
54	$_[0]->set_property ($type, $idx, $_[1]);
55	} unless $ignore_set{$prop};
56	}
57	}
58
59	# auto-generate most of the API
60
61	prop_gen OBJECT_PROP => "cf::object";
62	# CFAPI_OBJECT_ANIMATION?
63	prop_gen PLAYER_PROP => "cf::object::player";
64
65	prop_gen MAP_PROP => "cf::map";
66	prop_gen ARCH_PROP => "cf::arch";
67
68	# guessed hierarchies
69
70	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
71	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
72
73	# we bless all objects into derived classes to force a method lookup
74	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region)) {
76	no strict 'refs';
77	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	70	}
79		71
80	$Event::DIED = sub {	72	$Event::DIED = sub {
81	warn "error in event callback: @_";	73	warn "error in event callback: @_";
82	};	74	};
…		…
85	my @exts;	77	my @exts;
86	my @hook;	78	my @hook;
87	my %command;	79	my %command;
88	my %extcmd;	80	my %extcmd;
89		81
		82	=head2 UTILITY FUNCTIONS
		83
		84	=over 4
		85
		86	=cut
		87
		88	use JSON::Syck (); # TODO# replace by JSON::PC once working
		89
		90	=item $ref = cf::from_json $json
		91
		92	Converts a JSON string into the corresponding perl data structure.
		93
		94	=cut
		95
		96	sub from_json($) {
		97	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		98	JSON::Syck::Load $_[0]
		99	}
		100
		101	=item $json = cf::to_json $ref
		102
		103	Converts a perl data structure into its JSON representation.
		104
		105	=cut
		106
		107	sub to_json($) {
		108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		109	JSON::Syck::Dump $_[0]
		110	}
		111
		112	=back
		113
		114	=cut
		115
		116	#############################################################################
		117
		118	=head2 EVENTS AND OBJECT ATTACHMENTS
		119
		120	=over 4
		121
		122	=item $object->attach ($attachment, key => $value...)
		123
		124	=item $object->detach ($attachment)
		125
		126	Attach/detach a pre-registered attachment to an object.
		127
		128	=item $player->attach ($attachment, key => $value...)
		129
		130	=item $player->detach ($attachment)
		131
		132	Attach/detach a pre-registered attachment to a player.
		133
		134	=item $map->attach ($attachment, key => $value...)
		135
		136	=item $map->detach ($attachment)
		137
		138	Attach/detach a pre-registered attachment to a map.
		139
		140	=item $bool = $object->attached ($name)
		141
		142	=item $bool = $player->attached ($name)
		143
		144	=item $bool = $map->attached ($name)
		145
		146	Checks wether the named attachment is currently attached to the object.
		147
		148	=item cf::attach_global ...
		149
		150	Attach handlers for global events.
		151
		152	This and all following C<attach_*>-functions expect any number of the
		153	following handler/hook descriptions:
		154
		155	=over 4
		156
		157	=item prio => $number
		158
		159	Set the priority for all following handlers/hooks (unless overwritten
		160	by another C<prio> setting). Lower priority handlers get executed
		161	earlier. The default priority is C<0>, and many built-in handlers are
		162	registered at priority C<-1000>, so lower priorities should not be used
		163	unless you know what you are doing.
		164
		165	=item on_I<event> => \&cb
		166
		167	Call the given code reference whenever the named event happens (event is
		168	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		169	handlers are recognised generally depends on the type of object these
		170	handlers attach to).
		171
		172	See F<include/eventinc.h> for the full list of events supported, and their
		173	class.
		174
		175	=item package => package::
		176
		177	Look for sub functions of the name C<< on_I<event> >> in the given
		178	package and register them. Only handlers for eevents supported by the
		179	object/class are recognised.
		180
		181	=back
		182
		183	=item cf::attach_to_type $object_type, $subtype, ...
		184
		185	Attach handlers for a specific object type (e.g. TRANSPORT) and
		186	subtype. If C<$subtype> is zero or undef, matches all objects of the given
		187	type.
		188
		189	=item cf::attach_to_objects ...
		190
		191	Attach handlers to all objects. Do not use this except for debugging or
		192	very rare events, as handlers are (obviously) called for I<all> objects in
		193	the game.
		194
		195	=item cf::attach_to_players ...
		196
		197	Attach handlers to all players.
		198
		199	=item cf::attach_to_maps ...
		200
		201	Attach handlers to all maps.
		202
		203	=item cf:register_attachment $name, ...
		204
		205	Register an attachment by name through which objects can refer to this
		206	attachment.
		207
		208	=item cf:register_player_attachment $name, ...
		209
		210	Register an attachment by name through which players can refer to this
		211	attachment.
		212
		213	=item cf:register_map_attachment $name, ...
		214
		215	Register an attachment by name through which maps can refer to this
		216	attachment.
		217
		218	=cut
		219
		220	# the following variables are defined in .xs and must not be re-created
		221	our @CB_GLOBAL = (); # registry for all global events
		222	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		223	our @CB_PLAYER = ();
		224	our @CB_TYPE = (); # registry for type (cf-object class) based events
		225	our @CB_MAP = ();
		226
		227	my %attachment;
		228
		229	sub _attach_cb($\%$$$) {
		230	my ($registry, $undo, $event, $prio, $cb) = @_;
		231
		232	use sort 'stable';
		233
		234	$cb = [$prio, $cb];
		235
		236	@{$registry->[$event]} = sort
		237	{ $a->[0] cmp $b->[0] }
		238	@{$registry->[$event] \|\| []}, $cb;
		239
		240	push @{$undo->{cb}}, [$event, $cb];
		241	}
		242
		243	# attach handles attaching event callbacks
		244	# the only thing the caller has to do is pass the correct
		245	# registry (== where the callback attaches to).
		246	sub _attach(\@$@) {
		247	my ($registry, $klass, @arg) = @_;
		248
		249	my $prio = 0;
		250
		251	my %undo = (
		252	registry => $registry,
		253	cb => [],
		254	);
		255
		256	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		257
		258	while (@arg) {
		259	my $type = shift @arg;
		260
		261	if ($type eq "prio") {
		262	$prio = shift @arg;
		263
		264	} elsif ($type eq "package") {
		265	my $pkg = shift @arg;
		266
		267	while (my ($name, $id) = each %cb_id) {
		268	if (my $cb = $pkg->can ($name)) {
		269	_attach_cb $registry, %undo, $id, $prio, $cb;
		270	}
		271	}
		272
		273	} elsif (exists $cb_id{$type}) {
		274	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
		275
		276	} elsif (ref $type) {
		277	warn "attaching objects not supported, ignoring.\n";
		278
		279	} else {
		280	shift @arg;
		281	warn "attach argument '$type' not supported, ignoring.\n";
		282	}
		283	}
		284
		285	\%undo
		286	}
		287
		288	sub _attach_attachment {
		289	my ($obj, $name, %arg) = @_;
		290
		291	return if exists $obj->{_attachment}{$name};
		292
		293	my $res;
		294
		295	if (my $attach = $attachment{$name}) {
		296	my $registry = $obj->registry;
		297
		298	for (@$attach) {
		299	my ($klass, @attach) = @$_;
		300	$res = _attach @$registry, $klass, @attach;
		301	}
		302
		303	$obj->{$name} = \%arg;
		304	} else {
		305	warn "object uses attachment '$name' that is not available, postponing.\n";
		306	}
		307
		308	$obj->{_attachment}{$name} = undef;
		309
		310	$res->{attachment} = $name;
		311	$res
		312	}
		313
		314	*cf::object::attach =
		315	*cf::player::attach =
		316	*cf::map::attach = sub {
		317	my ($obj, $name, %arg) = @_;
		318
		319	_attach_attachment $obj, $name, %arg;
		320	};
		321
		322	# all those should be optimised
		323	*cf::object::detach =
		324	*cf::player::detach =
		325	*cf::map::detach = sub {
		326	my ($obj, $name) = @_;
		327
		328	delete $obj->{_attachment}{$name};
		329	reattach ($obj);
		330	};
		331
		332	*cf::object::attached =
		333	*cf::player::attached =
		334	*cf::map::attached = sub {
		335	my ($obj, $name) = @_;
		336
		337	exists $obj->{_attachment}{$name}
		338	};
		339
		340	sub attach_global {
		341	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
		342	}
		343
		344	sub attach_to_type {
		345	my $type = shift;
		346	my $subtype = shift;
		347
		348	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
		349	}
		350
		351	sub attach_to_objects {
		352	_attach @CB_OBJECT, KLASS_OBJECT, @_
		353	}
		354
		355	sub attach_to_players {
		356	_attach @CB_PLAYER, KLASS_PLAYER, @_
		357	}
		358
		359	sub attach_to_maps {
		360	_attach @CB_MAP, KLASS_MAP, @_
		361	}
		362
		363	sub register_attachment {
		364	my $name = shift;
		365
		366	$attachment{$name} = [[KLASS_OBJECT, @_]];
		367	}
		368
		369	sub register_player_attachment {
		370	my $name = shift;
		371
		372	$attachment{$name} = [[KLASS_PLAYER, @_]];
		373	}
		374
		375	sub register_map_attachment {
		376	my $name = shift;
		377
		378	$attachment{$name} = [[KLASS_MAP, @_]];
		379	}
		380
		381	our $override;
		382	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		383
		384	sub override {
		385	$override = 1;
		386	@invoke_results = ();
		387	}
		388
		389	sub do_invoke {
		390	my $event = shift;
		391	my $callbacks = shift;
		392
		393	@invoke_results = ();
		394
		395	local $override;
		396
		397	for (@$callbacks) {
		398	eval { &{$_->[1]} };
		399
		400	if ($@) {
		401	warn "$@";
		402	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		403	override;
		404	}
		405
		406	return 1 if $override;
		407	}
		408
		409	0
		410	}
		411
		412	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		413
		414	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		415
		416	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		417
		418	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		419
		420	Generate a global/object/player/map-specific event with the given arguments.
		421
		422	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		423	removed in future versions), and there is no public API to access override
		424	results (if you must, access C<@cf::invoke_results> directly).
		425
		426	=back
		427
		428	=cut
		429
		430	#############################################################################
		431
		432	=head2 METHODS VALID FOR ALL CORE OBJECTS
		433
		434	=over 4
		435
		436	=item $object->valid, $player->valid, $map->valid
		437
		438	Just because you have a perl object does not mean that the corresponding
		439	C-level object still exists. If you try to access an object that has no
		440	valid C counterpart anymore you get an exception at runtime. This method
		441	can be used to test for existence of the C object part without causing an
		442	exception.
		443
		444	=back
		445
		446	=cut
		447
		448	*cf::object::valid =
		449	*cf::player::valid =
		450	*cf::map::valid = \&cf::_valid;
		451
		452	#############################################################################
		453	# object support
		454
		455	sub instantiate {
		456	my ($obj, $data) = @_;
		457
		458	$data = from_json $data;
		459
		460	for (@$data) {
		461	my ($name, $args) = @$_;
		462
		463	$obj->attach ($name, %{$args \|\| {} });
		464	}
		465	}
		466
		467	# basically do the same as instantiate, without calling instantiate
		468	sub reattach {
		469	my ($obj) = @_;
		470	my $registry = $obj->registry;
		471
		472	@$registry = ();
		473
		474	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		475
		476	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
		477	if (my $attach = $attachment{$name}) {
		478	for (@$attach) {
		479	my ($klass, @attach) = @$_;
		480	_attach @$registry, $klass, @attach;
		481	}
		482	} else {
		483	warn "object uses attachment '$name' that is not available, postponing.\n";
		484	}
		485	}
		486	}
		487
		488	sub object_freezer_save {
		489	my ($filename, $rdata, $objs) = @_;
		490
		491	if (length $$rdata) {
		492	warn sprintf "saving %s (%d,%d)\n",
		493	$filename, length $$rdata, scalar @$objs;
		494
		495	if (open my $fh, ">:raw", "$filename~") {
		496	chmod SAVE_MODE, $fh;
		497	syswrite $fh, $$rdata;
		498	close $fh;
		499
		500	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		501	chmod SAVE_MODE, $fh;
		502	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		503	close $fh;
		504	rename "$filename.pst~", "$filename.pst";
		505	} else {
		506	unlink "$filename.pst";
		507	}
		508
		509	rename "$filename~", $filename;
		510	} else {
		511	warn "FATAL: $filename~: $!\n";
		512	}
		513	} else {
		514	unlink $filename;
		515	unlink "$filename.pst";
		516	}
		517	}
		518
		519	sub object_thawer_load {
		520	my ($filename) = @_;
		521
		522	local $/;
		523
		524	my $av;
		525
		526	#TODO: use sysread etc.
		527	if (open my $data, "<:raw:perlio", $filename) {
		528	$data = <$data>;
		529	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		530	$av = eval { (Storable::thaw <$pst>)->{objs} };
		531	}
		532	return ($data, $av);
		533	}
		534
		535	()
		536	}
		537
		538	attach_to_objects
		539	prio => -1000000,
		540	on_clone => sub {
		541	my ($src, $dst) = @_;
		542
		543	@{$dst->registry} = @{$src->registry};
		544
		545	%$dst = %$src;
		546
		547	%{$dst->{_attachment}} = %{$src->{_attachment}}
		548	if exists $src->{_attachment};
		549	},
		550	;
		551
		552	#############################################################################
		553	# old plug-in events
		554
90	sub inject_event {	555	sub inject_event {
91	my $extension = shift;	556	my $extension = shift;
92	my $event_code = shift;	557	my $event_code = shift;
93		558
94	my $cb = $hook[$event_code]{$extension}	559	my $cb = $hook[$event_code]{$extension}
…		…
136	}	601	}
137		602
138	sub register {	603	sub register {
139	my ($base, $pkg) = @_;	604	my ($base, $pkg) = @_;
140		605
141	for my $idx (0 .. $#EVENT) {	606	#TODO
142	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
143	#warn "registering $EVENT[$idx] hook to '$pkg'\n";
144	$hook[$idx]{$base} = $ref;
145	}
146	}
147	}	607	}
148		608
149	sub load_extension {	609	sub load_extension {
150	my ($path) = @_;	610	my ($path) = @_;
151		611
152	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	612	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
153	my $base = $1;	613	my $base = $1;
154	my $pkg = $1;	614	my $pkg = $1;
155	$pkg =~ s/[^[:word:]]/_/g;	615	$pkg =~ s/[^[:word:]]/_/g;
156	$pkg = "cf::ext::$pkg";	616	$pkg = "ext::$pkg";
157		617
158	warn "loading '$path' into '$pkg'\n";	618	warn "loading '$path' into '$pkg'\n";
159		619
160	open my $fh, "<:utf8", $path	620	open my $fh, "<:utf8", $path
161	or die "$path: $!";	621	or die "$path: $!";
…		…
181	sub unload_extension {	641	sub unload_extension {
182	my ($pkg) = @_;	642	my ($pkg) = @_;
183		643
184	warn "removing extension $pkg\n";	644	warn "removing extension $pkg\n";
185		645
186	if (my $cb = $pkg->can ("on_unload")) {
187	$cb->($pkg);
188	}
189
190	# remove hooks	646	# remove hooks
		647	#TODO
191	for my $idx (0 .. $#EVENT) {	648	# for my $idx (0 .. $#PLUGIN_EVENT) {
192	delete $hook[$idx]{$pkg};	649	# delete $hook[$idx]{$pkg};
193	}	650	# }
194		651
195	# remove commands	652	# remove commands
196	for my $name (keys %command) {	653	for my $name (keys %command) {
197	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	654	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
198		655
…		…
208	# remove extcmds	665	# remove extcmds
209	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	666	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
210	delete $extcmd{$name};	667	delete $extcmd{$name};
211	}	668	}
212		669
		670	if (my $cb = $pkg->can ("unload")) {
		671	eval {
		672	$cb->($pkg);
		673	1
		674	} or warn "$pkg unloaded, but with errors: $@";
		675	}
		676
213	Symbol::delete_package $pkg;	677	Symbol::delete_package $pkg;
214	}	678	}
215		679
216	sub load_extensions {	680	sub load_extensions {
217	my $LIBDIR = maps_directory "perl";	681	my $LIBDIR = maps_directory "perl";
…		…
223	1	687	1
224	} or warn "$ext not loaded: $@";	688	} or warn "$ext not loaded: $@";
225	}	689	}
226	}	690	}
227		691
228	register_command "perl-reload", 0, sub {
229	my ($who, $arg) = @_;
230
231	if ($who->flag (FLAG_WIZ)) {
232	$who->message ("reloading...");
233
234	warn "reloading...\n";
235	eval {
236	# 1. cancel all watchers
237	$_->cancel for Event::all_watchers;
238
239	# 2. unload all extensions
240	for (@exts) {
241	$who->message ("unloading <$_>");
242	unload_extension $_;
243	}
244
245	# 3. unload all modules loaded from $LIBDIR
246	while (my ($k, $v) = each %INC) {
247	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
248
249	$who->message ("removing <$k>");
250	delete $INC{$k};
251
252	$k =~ s/\.pm$//;
253	$k =~ s/\//::/g;
254
255	if (my $cb = $k->can ("unload_module")) {
256	$cb->();
257	}
258
259	Symbol::delete_package $k;
260	}
261
262	# 4. get rid of ext::, as good as possible
263	Symbol::delete_package "ext::$_"
264	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
265
266	# 5. remove register_script_function callbacks
267	# TODO
268
269	# 6. unload cf.pm "a bit"
270	delete $INC{"cf.pm"};
271
272	# don't, removes xs symbols, too
273	#Symbol::delete_package __PACKAGE__;
274
275	# 7. reload cf.pm
276	$who->message ("reloading cf.pm");
277	require cf;
278	};
279	warn $@ if $@;
280	$who->message ($@) if $@;
281	warn "reloaded\n";
282
283	$who->message ("reloaded");
284	} else {
285	$who->message ("Intruder Alert!");
286	}
287	};
288
289	#############################################################################
290	# utility functions
291
292	use JSON::Syck (); # TODO# replace by JSON::PC once working
293
294	$JSON::Syck::ImplicitUnicode = 1;
295
296	sub from_json($) {
297	JSON::Syck::Load $_[0]
298	}
299
300	sub to_json($) {
301	JSON::Syck::Dump $_[0]
302	}
303
304	#############################################################################	692	#############################################################################
305	# extcmd framework, basically convert ext <msg>	693	# extcmd framework, basically convert ext <msg>
306	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few	694	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
307		695
308	sub on_extcmd {	696	attach_to_players
		697	on_extcmd => sub {
309	my ($pl, $buf) = @_;	698	my ($pl, $buf) = @_;
310		699
311	my $msg = eval { from_json $buf };	700	my $msg = eval { from_json $buf };
312		701
313	if (ref $msg) {	702	if (ref $msg) {
314	if (my $cb = $extcmd{$msg->{msgtype}}) {	703	if (my $cb = $extcmd{$msg->{msgtype}}) {
315	if (my %reply = $cb->[0]->($pl, $msg)) {	704	if (my %reply = $cb->[0]->($pl, $msg)) {
316	$pl->ext_reply ($msg->{msgid}, %reply);	705	$pl->ext_reply ($msg->{msgid}, %reply);
		706	}
317	}	707	}
318	}
319	} else {	708	} else {
320	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	709	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		710	}
		711
		712	cf::override;
321	}	713	},
322		714	;
323	1
324	}
325		715
326	#############################################################################	716	#############################################################################
327	# load/save/clean perl data associated with a map	717	# load/save/clean perl data associated with a map
328		718
329	*on_mapclean = sub {	719	*cf::mapsupport::on_clean = sub {
330	my ($map) = @_;	720	my ($map) = @_;
331		721
332	my $path = $map->tmpname;	722	my $path = $map->tmpname;
333	defined $path or return;	723	defined $path or return;
334		724
335	unlink "$path.cfperl";	725	unlink "$path.pst";
336	};	726	};
337		727
338	*on_mapin =	728	attach_to_maps prio => -10000, package => cf::mapsupport::;
339	*on_mapload = sub {
340	my ($map) = @_;
341
342	my $path = $map->tmpname;
343	$path = $map->path unless defined $path;
344
345	open my $fh, "<:raw", "$path.cfperl"
346	or return; # no perl data
347
348	my $data = Storable::thaw do { local $/; <$fh> };
349
350	$data->{version} <= 1
351	or return; # too new
352
353	$map->_set_obs ($data->{obs});
354	};
355
356	*on_mapout = sub {
357	my ($map) = @_;
358
359	my $path = $map->tmpname;
360	$path = $map->path unless defined $path;
361
362	my $obs = $map->_get_obs;
363
364	if (defined $obs) {
365	open my $fh, ">:raw", "$path.cfperl"
366	or die "$path.cfperl: $!";
367
368	stat $path;
369
370	print $fh Storable::nfreeze {
371	size => (stat _)[7],
372	time => (stat _)[9],
373	version => 1,
374	obs => $obs,
375	};
376
377	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
378	} else {
379	unlink "$path.cfperl";
380	}
381	};
382		729
383	#############################################################################	730	#############################################################################
384	# load/save perl data associated with player->ob objects	731	# load/save perl data associated with player->ob objects
385		732
386	*on_player_load = sub {	733	sub all_objects(@) {
		734	@_, map all_objects ($_->inv), @_
		735	}
		736
		737	# TODO: compatibility cruft, remove when no longer needed
		738	attach_to_players
		739	on_load => sub {
387	my ($ob, $path) = @_;	740	my ($pl, $path) = @_;
388		741
389	for my $o ($ob, $ob->inv) {	742	for my $o (all_objects $pl->ob) {
390	if (my $value = $o->get_ob_key_value ("_perl_data")) {	743	if (my $value = $o->get_ob_key_value ("_perl_data")) {
391	$o->set_ob_key_value ("_perl_data");	744	$o->set_ob_key_value ("_perl_data");
392		745
393	%$o = %{ Storable::thaw pack "H*", $value };	746	%$o = %{ Storable::thaw pack "H*", $value };
394	}	747	}
		748	}
395	}	749	},
396	};	750	;
397		751
398	*on_player_save = sub {
399	my ($ob, $path) = @_;
400
401	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
402	for grep %$_, $ob, $ob->inv;
403	};
404
405	#############################################################################	752	#############################################################################
406	# core extensions - in perl	753
		754	=head2 CORE EXTENSIONS
		755
		756	Functions and methods that extend core crossfire objects.
		757
		758	=over 4
407		759
408	=item cf::player::exists $login	760	=item cf::player::exists $login
409		761
410	Returns true when the given account exists.	762	Returns true when the given account exists.
411		763
…		…
451	$msg{msgid} = $id;	803	$msg{msgid} = $id;
452		804
453	$self->send ("ext " . to_json \%msg);	805	$self->send ("ext " . to_json \%msg);
454	}	806	}
455		807
456	#############################################################################	808	=back
457	# map scripting support
458		809
		810	=cut
		811
		812	#############################################################################
		813
		814	=head2 SAFE SCRIPTING
		815
		816	Functions that provide a safe environment to compile and execute
		817	snippets of perl code without them endangering the safety of the server
		818	itself. Looping constructs, I/O operators and other built-in functionality
		819	is not available in the safe scripting environment, and the number of
		820	functions and methods that cna be called is greatly reduced.
		821
		822	=cut
		823
459	our $safe = new Safe "ext";	824	our $safe = new Safe "safe";
460	our $safe_hole = new Safe::Hole;	825	our $safe_hole = new Safe::Hole;
461		826
462	$SIG{FPE} = 'IGNORE';	827	$SIG{FPE} = 'IGNORE';
463		828
464	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	829	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
465		830
466	# here we export the classes and methods available to script code	831	# here we export the classes and methods available to script code
		832
		833	=pod
		834
		835	The following fucntions and emthods are available within a safe environment:
		836
		837	cf::object contr pay_amount pay_player
		838	cf::object::player player
		839	cf::player peaceful
		840
		841	=cut
467		842
468	for (	843	for (
469	["cf::object" => qw(contr pay_amount pay_player)],	844	["cf::object" => qw(contr pay_amount pay_player)],
470	["cf::object::player" => qw(player)],	845	["cf::object::player" => qw(player)],
471	["cf::player" => qw(peaceful)],	846	["cf::player" => qw(peaceful)],
472	) {	847	) {
473	no strict 'refs';	848	no strict 'refs';
474	my ($pkg, @funs) = @$_;	849	my ($pkg, @funs) = @$_;
475	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	850	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
476	for @funs;	851	for @funs;
477	}	852	}
		853
		854	=over 4
		855
		856	=item @retval = safe_eval $code, [var => value, ...]
		857
		858	Compiled and executes the given perl code snippet. additional var/value
		859	pairs result in temporary local (my) scalar variables of the given name
		860	that are available in the code snippet. Example:
		861
		862	my $five = safe_eval '$first + $second', first => 1, second => 4;
		863
		864	=cut
478		865
479	sub safe_eval($;@) {	866	sub safe_eval($;@) {
480	my ($code, %vars) = @_;	867	my ($code, %vars) = @_;
481		868
482	my $qcode = $code;	869	my $qcode = $code;
483	$qcode =~ s/"/‟/g; # not allowed in #line filenames	870	$qcode =~ s/"/‟/g; # not allowed in #line filenames
484	$qcode =~ s/\n/\\n/g;	871	$qcode =~ s/\n/\\n/g;
485		872
486	local $_;	873	local $_;
487	local @ext::cf::_safe_eval_args = values %vars;	874	local @safe::cf::_safe_eval_args = values %vars;
488		875
489	$code =	876	my $eval =
490	"do {\n"	877	"do {\n"
491	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	878	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
492	. "#line 0 \"{$qcode}\"\n"	879	. "#line 0 \"{$qcode}\"\n"
493	. $code	880	. $code
494	. "\n}"	881	. "\n}"
495	;	882	;
496		883
497	sub_generation_inc;	884	sub_generation_inc;
498	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	885	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
499	sub_generation_inc;	886	sub_generation_inc;
500		887
		888	if ($@) {
		889	warn "$@";
		890	warn "while executing safe code '$code'\n";
		891	warn "with arguments " . (join " ", %vars) . "\n";
		892	}
		893
501	wantarray ? @res : $res[0]	894	wantarray ? @res : $res[0]
502	}	895	}
		896
		897	=item cf::register_script_function $function => $cb
		898
		899	Register a function that can be called from within map/npc scripts. The
		900	function should be reasonably secure and should be put into a package name
		901	like the extension.
		902
		903	Example: register a function that gets called whenever a map script calls
		904	C<rent::overview>, as used by the C<rent> extension.
		905
		906	cf::register_script_function "rent::overview" => sub {
		907	...
		908	};
		909
		910	=cut
503		911
504	sub register_script_function {	912	sub register_script_function {
505	my ($fun, $cb) = @_;	913	my ($fun, $cb) = @_;
506		914
507	no strict 'refs';	915	no strict 'refs';
508	*{"ext::$fun"} = $safe_hole->wrap ($cb);	916	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		917	}
		918
		919	=back
		920
		921	=cut
		922
		923	#############################################################################
		924
		925	=head2 EXTENSION DATABASE SUPPORT
		926
		927	Crossfire maintains a very simple database for extension use. It can
		928	currently store anything that can be serialised using Storable, which
		929	excludes objects.
		930
		931	The parameter C<$family> should best start with the name of the extension
		932	using it, it should be unique.
		933
		934	=over 4
		935
		936	=item $hashref = cf::db_get $family
		937
		938	Return a hashref for use by the extension C<$family>, which can be
		939	modified. After modifications, you have to call C<cf::db_dirty> or
		940	C<cf::db_sync>.
		941
		942	=item $value = cf::db_get $family => $key
		943
		944	Returns a single value from the database
		945
		946	=item cf::db_put $family => $hashref
		947
		948	Stores the given family hashref into the database. Updates are delayed, if
		949	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		950
		951	=item cf::db_put $family => $key => $value
		952
		953	Stores the given C<$value> in the family hash. Updates are delayed, if you
		954	want the data to be synced to disk immediately, use C<cf::db_sync>.
		955
		956	=item cf::db_dirty
		957
		958	Marks the database as dirty, to be updated at a later time.
		959
		960	=item cf::db_sync
		961
		962	Immediately write the database to disk I<if it is dirty>.
		963
		964	=cut
		965
		966	{
		967	my $db;
		968	my $path = cf::localdir . "/database.pst";
		969
		970	sub db_load() {
		971	warn "loading database $path\n";#d# remove later
		972	$db = stat $path ? Storable::retrieve $path : { };
		973	}
		974
		975	my $pid;
		976
		977	sub db_save() {
		978	warn "saving database $path\n";#d# remove later
		979	waitpid $pid, 0 if $pid;
		980	if (0 == ($pid = fork)) {
		981	$db->{_meta}{version} = 1;
		982	Storable::nstore $db, "$path~";
		983	rename "$path~", $path;
		984	cf::_exit 0 if defined $pid;
		985	}
		986	}
		987
		988	my $dirty;
		989
		990	sub db_sync() {
		991	db_save if $dirty;
		992	undef $dirty;
		993	}
		994
		995	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
		996	db_sync;
		997	});
		998
		999	sub db_dirty() {
		1000	$dirty = 1;
		1001	$idle->start;
		1002	}
		1003
		1004	sub db_get($;$) {
		1005	@_ >= 2
		1006	? $db->{$_[0]}{$_[1]}
		1007	: ($db->{$_[0]} \|\|= { })
		1008	}
		1009
		1010	sub db_put($$;$) {
		1011	if (@_ >= 3) {
		1012	$db->{$_[0]}{$_[1]} = $_[2];
		1013	} else {
		1014	$db->{$_[0]} = $_[1];
		1015	}
		1016	db_dirty;
		1017	}
		1018
		1019	attach_global
		1020	prio => 10000,
		1021	on_cleanup => sub {
		1022	db_sync;
		1023	},
		1024	;
		1025	}
		1026
		1027	#############################################################################
		1028	# the server's main()
		1029
		1030	sub main {
		1031	db_load;
		1032	load_extensions;
		1033	Event::loop;
509	}	1034	}
510		1035
511	#############################################################################	1036	#############################################################################
512	# initialisation	1037	# initialisation
513		1038
		1039	sub _perl_reload(&) {
		1040	my ($msg) = @_;
		1041
		1042	$msg->("reloading...");
		1043
		1044	eval {
		1045	# cancel all watchers
		1046	$_->cancel for Event::all_watchers;
		1047
		1048	# unload all extensions
		1049	for (@exts) {
		1050	$msg->("unloading <$_>");
		1051	unload_extension $_;
		1052	}
		1053
		1054	# unload all modules loaded from $LIBDIR
		1055	while (my ($k, $v) = each %INC) {
		1056	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1057
		1058	$msg->("removing <$k>");
		1059	delete $INC{$k};
		1060
		1061	$k =~ s/\.pm$//;
		1062	$k =~ s/\//::/g;
		1063
		1064	if (my $cb = $k->can ("unload_module")) {
		1065	$cb->();
		1066	}
		1067
		1068	Symbol::delete_package $k;
		1069	}
		1070
		1071	# sync database to disk
		1072	cf::db_sync;
		1073
		1074	# get rid of safe::, as good as possible
		1075	Symbol::delete_package "safe::$_"
		1076	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1077
		1078	# remove register_script_function callbacks
		1079	# TODO
		1080
		1081	# unload cf.pm "a bit"
		1082	delete $INC{"cf.pm"};
		1083
		1084	# don't, removes xs symbols, too,
		1085	# and global variables created in xs
		1086	#Symbol::delete_package __PACKAGE__;
		1087
		1088	# reload cf.pm
		1089	$msg->("reloading cf.pm");
		1090	require cf;
		1091
		1092	# load database again
		1093	cf::db_load;
		1094
		1095	# load extensions
		1096	$msg->("load extensions");
		1097	cf::load_extensions;
		1098
		1099	# reattach attachments to objects
		1100	$msg->("reattach");
		1101	_global_reattach;
		1102	};
		1103	$msg->($@) if $@;
		1104
		1105	$msg->("reloaded");
		1106	};
		1107
		1108	sub perl_reload() {
		1109	_perl_reload {
		1110	warn $_[0];
		1111	print "$_[0]\n";
		1112	};
		1113	}
		1114
		1115	register_command "perl-reload", 0, sub {
		1116	my ($who, $arg) = @_;
		1117
		1118	if ($who->flag (FLAG_WIZ)) {
		1119	_perl_reload {
		1120	warn $_[0];
		1121	$who->message ($_[0]);
		1122	};
		1123	}
		1124	};
		1125
514	register "<global>", __PACKAGE__;	1126	register "<global>", __PACKAGE__;
515		1127
516	unshift @INC, $LIBDIR;	1128	unshift @INC, $LIBDIR;
517		1129
518	load_extensions;	1130	$TICK_WATCHER = Event->timer (
		1131	prio => 1,
		1132	at => $NEXT_TICK \|\| 1,
		1133	cb => sub {
		1134	cf::server_tick; # one server iteration
		1135
		1136	my $NOW = Event::time;
		1137	$NEXT_TICK += $TICK;
		1138
		1139	# if we are delayed by four ticks, skip them all
		1140	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		1141
		1142	$TICK_WATCHER->at ($NEXT_TICK);
		1143	$TICK_WATCHER->start;
		1144	},
		1145	);
519		1146
520	1	1147	1
521		1148

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.28 by root, Sun Jul 30 17:42:14 2006 UTC vs. Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.28 by root, Sun Jul 30 17:42:14 2006 UTC vs.
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC