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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.38 by root, Thu Aug 24 17:29:30 2006 UTC vs.
Revision 1.83 by root, Mon Dec 11 01:30:41 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 IO::AIO ();
		11	use YAML::Syck ();
10	use Time::HiRes;	12	use Time::HiRes;
11	use Event;	13	use Event;
12	$Event::Eval = 1; # no idea why this is required, but it is	14	$Event::Eval = 1; # no idea why this is required, but it is
13		15
		16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		17	$YAML::Syck::ImplicitUnicode = 1;
		18
14	use strict;	19	use strict;
15		20
		21	_init_vars;
		22
16	our %COMMAND;	23	our %COMMAND = ();
17	our @EVENT;	24	our @EVENT;
18	our @PLUGIN_EVENT;
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";	25	our $LIBDIR = maps_directory "perl";
22		26
23	our $TICK = MAX_TIME * 1e-6;	27	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;	28	our $TICK_WATCHER;
25	our $NEXT_TICK;	29	our $NEXT_TICK;
26		30
		31	our %CFG;
		32
		33	our $uptime;#d#
		34	our $UPTIME;
		35	$UPTIME \|\|= $uptime;#d#
		36	$UPTIME \|\|= time;
		37
		38	#############################################################################
		39
		40	=head2 GLOBAL VARIABLES
		41
		42	=over 4
		43
		44	=item $cf::UPTIME
		45
		46	The timestamp of the server start (so not actually an uptime).
		47
		48	=item $cf::LIBDIR
		49
		50	The perl library directory, where extensions and cf-specific modules can
		51	be found. It will be added to C<@INC> automatically.
		52
		53	=item $cf::TICK
		54
		55	The interval between server ticks, in seconds.
		56
		57	=item %cf::CFG
		58
		59	Configuration for the server, loaded from C</etc/crossfire/config>, or
		60	from wherever your confdir points to.
		61
		62	=back
		63
		64	=cut
		65
27	BEGIN {	66	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	67	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	68	my $msg = join "", @_;
32	$msg .= "\n"	69	$msg .= "\n"
33	unless $msg =~ /\n$/;	70	unless $msg =~ /\n$/;
34		71
35	print STDERR "cfperl: $msg";	72	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	73	LOG llevError, "cfperl: $msg";
37	};	74	};
38	}	75	}
39		76
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
41		78
42	# generate property mutators	79	# we bless all objects into (empty) derived classes to force a method lookup
43	sub prop_gen {	80	# within the Safe compartment.
44	my ($prefix, $class) = @_;	81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {
45
46	no strict 'refs';	82	no strict 'refs';
47
48	for my $prop (keys %PROP_TYPE) {
49	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
50	my $sub = lc $1;
51
52	my $type = $PROP_TYPE{$prop};
53	my $idx = $PROP_IDX {$prop};
54
55	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
56	$_[0]->get_property ($type, $idx)
57	};
58
59	*{"$class\::set_$sub"} = sub {
60	$_[0]->set_property ($type, $idx, $_[1]);
61	} unless $ignore_set{$prop};
62	}
63	}
64
65	# auto-generate most of the API
66
67	prop_gen OBJECT_PROP => "cf::object";
68	# CFAPI_OBJECT_ANIMATION?
69	prop_gen PLAYER_PROP => "cf::object::player";
70
71	prop_gen MAP_PROP => "cf::map";
72	prop_gen ARCH_PROP => "cf::arch";
73
74	# guessed hierarchies
75
76	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78
79	# we bless all objects into derived classes to force a method lookup
80	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
82	no strict 'refs';
83	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	84	}
85		85
86	$Event::DIED = sub {	86	$Event::DIED = sub {
87	warn "error in event callback: @_";	87	warn "error in event callback: @_";
88	};	88	};
…		…
91	my @exts;	91	my @exts;
92	my @hook;	92	my @hook;
93	my %command;	93	my %command;
94	my %extcmd;	94	my %extcmd;
95		95
		96	=head2 UTILITY FUNCTIONS
		97
		98	=over 4
		99
		100	=cut
		101
		102	use JSON::Syck (); # TODO# replace by JSON::PC once working
		103
		104	=item $ref = cf::from_json $json
		105
		106	Converts a JSON string into the corresponding perl data structure.
		107
		108	=cut
		109
		110	sub from_json($) {
		111	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		112	JSON::Syck::Load $_[0]
		113	}
		114
		115	=item $json = cf::to_json $ref
		116
		117	Converts a perl data structure into its JSON representation.
		118
		119	=cut
		120
		121	sub to_json($) {
		122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		123	JSON::Syck::Dump $_[0]
		124	}
		125
		126	=back
		127
		128	=cut
		129
		130	#############################################################################
		131
		132	=head2 EVENTS AND OBJECT ATTACHMENTS
		133
		134	=over 4
		135
		136	=item $object->attach ($attachment, key => $value...)
		137
		138	=item $object->detach ($attachment)
		139
		140	Attach/detach a pre-registered attachment to an object.
		141
		142	=item $player->attach ($attachment, key => $value...)
		143
		144	=item $player->detach ($attachment)
		145
		146	Attach/detach a pre-registered attachment to a player.
		147
		148	=item $map->attach ($attachment, key => $value...)
		149
		150	=item $map->detach ($attachment)
		151
		152	Attach/detach a pre-registered attachment to a map.
		153
		154	=item $bool = $object->attached ($name)
		155
		156	=item $bool = $player->attached ($name)
		157
		158	=item $bool = $map->attached ($name)
		159
		160	Checks wether the named attachment is currently attached to the object.
		161
		162	=item cf::attach_global ...
		163
		164	Attach handlers for global events.
		165
		166	This and all following C<attach_*>-functions expect any number of the
		167	following handler/hook descriptions:
		168
		169	=over 4
		170
		171	=item prio => $number
		172
		173	Set the priority for all following handlers/hooks (unless overwritten
		174	by another C<prio> setting). Lower priority handlers get executed
		175	earlier. The default priority is C<0>, and many built-in handlers are
		176	registered at priority C<-1000>, so lower priorities should not be used
		177	unless you know what you are doing.
		178
		179	=item on_I<event> => \&cb
		180
		181	Call the given code reference whenever the named event happens (event is
		182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		183	handlers are recognised generally depends on the type of object these
		184	handlers attach to).
		185
		186	See F<include/eventinc.h> for the full list of events supported, and their
		187	class.
		188
		189	=item package => package::
		190
		191	Look for sub functions of the name C<< on_I<event> >> in the given
		192	package and register them. Only handlers for eevents supported by the
		193	object/class are recognised.
		194
		195	=back
		196
		197	=item cf::attach_to_type $object_type, $subtype, ...
		198
		199	Attach handlers for a specific object type (e.g. TRANSPORT) and
		200	subtype. If C<$subtype> is zero or undef, matches all objects of the given
		201	type.
		202
		203	=item cf::attach_to_objects ...
		204
		205	Attach handlers to all objects. Do not use this except for debugging or
		206	very rare events, as handlers are (obviously) called for I<all> objects in
		207	the game.
		208
		209	=item cf::attach_to_players ...
		210
		211	Attach handlers to all players.
		212
		213	=item cf::attach_to_maps ...
		214
		215	Attach handlers to all maps.
		216
		217	=item cf:register_attachment $name, ...
		218
		219	Register an attachment by name through which objects can refer to this
		220	attachment.
		221
		222	=item cf:register_player_attachment $name, ...
		223
		224	Register an attachment by name through which players can refer to this
		225	attachment.
		226
		227	=item cf:register_map_attachment $name, ...
		228
		229	Register an attachment by name through which maps can refer to this
		230	attachment.
		231
		232	=cut
		233
		234	# the following variables are defined in .xs and must not be re-created
		235	our @CB_GLOBAL = (); # registry for all global events
		236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		237	our @CB_PLAYER = ();
		238	our @CB_TYPE = (); # registry for type (cf-object class) based events
		239	our @CB_MAP = ();
		240
		241	my %attachment;
		242
		243	sub _attach_cb($\%$$$) {
		244	my ($registry, $undo, $event, $prio, $cb) = @_;
		245
		246	use sort 'stable';
		247
		248	$cb = [$prio, $cb];
		249
		250	@{$registry->[$event]} = sort
		251	{ $a->[0] cmp $b->[0] }
		252	@{$registry->[$event] \|\| []}, $cb;
		253
		254	push @{$undo->{cb}}, [$event, $cb];
		255	}
		256
		257	# attach handles attaching event callbacks
		258	# the only thing the caller has to do is pass the correct
		259	# registry (== where the callback attaches to).
		260	sub _attach(\@$@) {
		261	my ($registry, $klass, @arg) = @_;
		262
		263	my $prio = 0;
		264
		265	my %undo = (
		266	registry => $registry,
		267	cb => [],
		268	);
		269
		270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		271
		272	while (@arg) {
		273	my $type = shift @arg;
		274
		275	if ($type eq "prio") {
		276	$prio = shift @arg;
		277
		278	} elsif ($type eq "package") {
		279	my $pkg = shift @arg;
		280
		281	while (my ($name, $id) = each %cb_id) {
		282	if (my $cb = $pkg->can ($name)) {
		283	_attach_cb $registry, %undo, $id, $prio, $cb;
		284	}
		285	}
		286
		287	} elsif (exists $cb_id{$type}) {
		288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
		289
		290	} elsif (ref $type) {
		291	warn "attaching objects not supported, ignoring.\n";
		292
		293	} else {
		294	shift @arg;
		295	warn "attach argument '$type' not supported, ignoring.\n";
		296	}
		297	}
		298
		299	\%undo
		300	}
		301
		302	sub _attach_attachment {
		303	my ($obj, $name, %arg) = @_;
		304
		305	return if exists $obj->{_attachment}{$name};
		306
		307	my $res;
		308
		309	if (my $attach = $attachment{$name}) {
		310	my $registry = $obj->registry;
		311
		312	for (@$attach) {
		313	my ($klass, @attach) = @$_;
		314	$res = _attach @$registry, $klass, @attach;
		315	}
		316
		317	$obj->{$name} = \%arg;
		318	} else {
		319	warn "object uses attachment '$name' that is not available, postponing.\n";
		320	}
		321
		322	$obj->{_attachment}{$name} = undef;
		323
		324	$res->{attachment} = $name;
		325	$res
		326	}
		327
		328	*cf::object::attach =
		329	*cf::player::attach =
		330	*cf::map::attach = sub {
		331	my ($obj, $name, %arg) = @_;
		332
		333	_attach_attachment $obj, $name, %arg;
		334	};
		335
		336	# all those should be optimised
		337	*cf::object::detach =
		338	*cf::player::detach =
		339	*cf::map::detach = sub {
		340	my ($obj, $name) = @_;
		341
		342	delete $obj->{_attachment}{$name};
		343	reattach ($obj);
		344	};
		345
		346	*cf::object::attached =
		347	*cf::player::attached =
		348	*cf::map::attached = sub {
		349	my ($obj, $name) = @_;
		350
		351	exists $obj->{_attachment}{$name}
		352	};
		353
		354	sub attach_global {
		355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
		356	}
		357
		358	sub attach_to_type {
		359	my $type = shift;
		360	my $subtype = shift;
		361
		362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
		363	}
		364
		365	sub attach_to_objects {
		366	_attach @CB_OBJECT, KLASS_OBJECT, @_
		367	}
		368
		369	sub attach_to_players {
		370	_attach @CB_PLAYER, KLASS_PLAYER, @_
		371	}
		372
		373	sub attach_to_maps {
		374	_attach @CB_MAP, KLASS_MAP, @_
		375	}
		376
		377	sub register_attachment {
		378	my $name = shift;
		379
		380	$attachment{$name} = [[KLASS_OBJECT, @_]];
		381	}
		382
		383	sub register_player_attachment {
		384	my $name = shift;
		385
		386	$attachment{$name} = [[KLASS_PLAYER, @_]];
		387	}
		388
		389	sub register_map_attachment {
		390	my $name = shift;
		391
		392	$attachment{$name} = [[KLASS_MAP, @_]];
		393	}
		394
		395	our $override;
		396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		397
		398	sub override {
		399	$override = 1;
		400	@invoke_results = ();
		401	}
		402
		403	sub do_invoke {
		404	my $event = shift;
		405	my $callbacks = shift;
		406
		407	@invoke_results = ();
		408
		409	local $override;
		410
		411	for (@$callbacks) {
		412	eval { &{$_->[1]} };
		413
		414	if ($@) {
		415	warn "$@";
		416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		417	override;
		418	}
		419
		420	return 1 if $override;
		421	}
		422
		423	0
		424	}
		425
		426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		427
		428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		429
		430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		431
		432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		433
		434	Generate a global/object/player/map-specific event with the given arguments.
		435
		436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		437	removed in future versions), and there is no public API to access override
		438	results (if you must, access C<@cf::invoke_results> directly).
		439
		440	=back
		441
		442	=cut
		443
		444	#############################################################################
		445
		446	=head2 METHODS VALID FOR ALL CORE OBJECTS
		447
		448	=over 4
		449
		450	=item $object->valid, $player->valid, $map->valid
		451
		452	Just because you have a perl object does not mean that the corresponding
		453	C-level object still exists. If you try to access an object that has no
		454	valid C counterpart anymore you get an exception at runtime. This method
		455	can be used to test for existence of the C object part without causing an
		456	exception.
		457
		458	=back
		459
		460	=cut
		461
		462	*cf::object::valid =
		463	*cf::player::valid =
		464	*cf::map::valid = \&cf::_valid;
		465
		466	#############################################################################
		467	# object support
		468
		469	sub instantiate {
		470	my ($obj, $data) = @_;
		471
		472	$data = from_json $data;
		473
		474	for (@$data) {
		475	my ($name, $args) = @$_;
		476
		477	$obj->attach ($name, %{$args \|\| {} });
		478	}
		479	}
		480
		481	# basically do the same as instantiate, without calling instantiate
		482	sub reattach {
		483	my ($obj) = @_;
		484	my $registry = $obj->registry;
		485
		486	@$registry = ();
		487
		488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		489
		490	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
		491	if (my $attach = $attachment{$name}) {
		492	for (@$attach) {
		493	my ($klass, @attach) = @$_;
		494	_attach @$registry, $klass, @attach;
		495	}
		496	} else {
		497	warn "object uses attachment '$name' that is not available, postponing.\n";
		498	}
		499	}
		500	}
		501
		502	sub object_freezer_save {
		503	my ($filename, $rdata, $objs) = @_;
		504
		505	if (length $$rdata) {
		506	warn sprintf "saving %s (%d,%d)\n",
		507	$filename, length $$rdata, scalar @$objs;
		508
		509	if (open my $fh, ">:raw", "$filename~") {
		510	chmod SAVE_MODE, $fh;
		511	syswrite $fh, $$rdata;
		512	close $fh;
		513
		514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		515	chmod SAVE_MODE, $fh;
		516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		517	close $fh;
		518	rename "$filename.pst~", "$filename.pst";
		519	} else {
		520	unlink "$filename.pst";
		521	}
		522
		523	rename "$filename~", $filename;
		524	} else {
		525	warn "FATAL: $filename~: $!\n";
		526	}
		527	} else {
		528	unlink $filename;
		529	unlink "$filename.pst";
		530	}
		531	}
		532
		533	sub object_freezer_as_string {
		534	my ($rdata, $objs) = @_;
		535
		536	use Data::Dumper;
		537
		538	$$rdata . Dumper $objs
		539	}
		540
		541	sub object_thawer_load {
		542	my ($filename) = @_;
		543
		544	local $/;
		545
		546	my $av;
		547
		548	#TODO: use sysread etc.
		549	if (open my $data, "<:raw:perlio", $filename) {
		550	$data = <$data>;
		551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		552	$av = eval { (Storable::thaw <$pst>)->{objs} };
		553	}
		554	return ($data, $av);
		555	}
		556
		557	()
		558	}
		559
		560	attach_to_objects
		561	prio => -1000000,
		562	on_clone => sub {
		563	my ($src, $dst) = @_;
		564
		565	@{$dst->registry} = @{$src->registry};
		566
		567	%$dst = %$src;
		568
		569	%{$dst->{_attachment}} = %{$src->{_attachment}}
		570	if exists $src->{_attachment};
		571	},
		572	;
		573
		574	#############################################################################
		575	# old plug-in events
		576
96	sub inject_event {	577	sub inject_event {
97	my $extension = shift;	578	my $extension = shift;
98	my $event_code = shift;	579	my $event_code = shift;
99		580
100	my $cb = $hook[$event_code]{$extension}	581	my $cb = $hook[$event_code]{$extension}
…		…
142	}	623	}
143		624
144	sub register {	625	sub register {
145	my ($base, $pkg) = @_;	626	my ($base, $pkg) = @_;
146		627
147	for my $idx (0 .. $#PLUGIN_EVENT) {	628	#TODO
148	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
149	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
150	$hook[$idx]{$base} = $ref;
151	}
152	}
153	}	629	}
154		630
155	sub load_extension {	631	sub load_extension {
156	my ($path) = @_;	632	my ($path) = @_;
157		633
158	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
159	my $base = $1;	635	my $base = $1;
160	my $pkg = $1;	636	my $pkg = $1;
161	$pkg =~ s/[^[:word:]]/_/g;	637	$pkg =~ s/[^[:word:]]/_/g;
162	$pkg = "cf::ext::$pkg";	638	$pkg = "ext::$pkg";
163		639
164	warn "loading '$path' into '$pkg'\n";	640	warn "loading '$path' into '$pkg'\n";
165		641
166	open my $fh, "<:utf8", $path	642	open my $fh, "<:utf8", $path
167	or die "$path: $!";	643	or die "$path: $!";
…		…
171	. "#line 1 \"$path\"\n{\n"	647	. "#line 1 \"$path\"\n{\n"
172	. (do { local $/; <$fh> })	648	. (do { local $/; <$fh> })
173	. "\n};\n1";	649	. "\n};\n1";
174		650
175	eval $source	651	eval $source
176	or die "$path: $@";	652	or die $@ ? "$path: $@\n"
		653	: "extension disabled.\n";
177		654
178	push @exts, $pkg;	655	push @exts, $pkg;
179	$ext_pkg{$base} = $pkg;	656	$ext_pkg{$base} = $pkg;
180		657
181	# no strict 'refs';	658	# no strict 'refs';
…		…
188	my ($pkg) = @_;	665	my ($pkg) = @_;
189		666
190	warn "removing extension $pkg\n";	667	warn "removing extension $pkg\n";
191		668
192	# remove hooks	669	# remove hooks
		670	#TODO
193	for my $idx (0 .. $#PLUGIN_EVENT) {	671	# for my $idx (0 .. $#PLUGIN_EVENT) {
194	delete $hook[$idx]{$pkg};	672	# delete $hook[$idx]{$pkg};
195	}	673	# }
196		674
197	# remove commands	675	# remove commands
198	for my $name (keys %command) {	676	for my $name (keys %command) {
199	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
200		678
…		…
210	# remove extcmds	688	# remove extcmds
211	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
212	delete $extcmd{$name};	690	delete $extcmd{$name};
213	}	691	}
214		692
215	if (my $cb = $pkg->can ("on_unload")) {	693	if (my $cb = $pkg->can ("unload")) {
216	eval {	694	eval {
217	$cb->($pkg);	695	$cb->($pkg);
218	1	696	1
219	} or warn "$pkg unloaded, but with errors: $@";	697	} or warn "$pkg unloaded, but with errors: $@";
220	}	698	}
…		…
232	1	710	1
233	} or warn "$ext not loaded: $@";	711	} or warn "$ext not loaded: $@";
234	}	712	}
235	}	713	}
236		714
237	sub _perl_reload(&) {
238	my ($msg) = @_;
239
240	$msg->("reloading...");
241
242	eval {
243	# 1. cancel all watchers
244	$_->cancel for Event::all_watchers;
245
246	# 2. unload all extensions
247	for (@exts) {
248	$msg->("unloading <$_>");
249	unload_extension $_;
250	}
251
252	# 3. unload all modules loaded from $LIBDIR
253	while (my ($k, $v) = each %INC) {
254	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
255
256	$msg->("removing <$k>");
257	delete $INC{$k};
258
259	$k =~ s/\.pm$//;
260	$k =~ s/\//::/g;
261
262	if (my $cb = $k->can ("unload_module")) {
263	$cb->();
264	}
265
266	Symbol::delete_package $k;
267	}
268
269	# 4. get rid of ext::, as good as possible
270	Symbol::delete_package "ext::$_"
271	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
272
273	# 5. remove register_script_function callbacks
274	# TODO
275
276	# 6. unload cf.pm "a bit"
277	delete $INC{"cf.pm"};
278
279	# don't, removes xs symbols, too
280	#Symbol::delete_package __PACKAGE__;
281
282	# 7. reload cf.pm
283	$msg->("reloading cf.pm");
284	require cf;
285	};
286	$msg->($@) if $@;
287
288	$msg->("reloaded");
289	};
290
291	sub perl_reload() {
292	_perl_reload {
293	warn $_[0];
294	print "$_[0]\n";
295	};
296	}
297
298	register_command "perl-reload", 0, sub {
299	my ($who, $arg) = @_;
300
301	if ($who->flag (FLAG_WIZ)) {
302	_perl_reload {
303	warn $_[0];
304	$who->message ($_[0]);
305	};
306	}
307	};
308
309	#############################################################################
310	# utility functions
311
312	use JSON::Syck (); # TODO# replace by JSON::PC once working
313
314	sub from_json($) {
315	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
316	JSON::Syck::Load $_[0]
317	}
318
319	sub to_json($) {
320	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
321	JSON::Syck::Dump $_[0]
322	}
323
324	#############################################################################	715	#############################################################################
325	# extcmd framework, basically convert ext <msg>	716	# extcmd framework, basically convert ext <msg>
326	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few	717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
327		718
328	sub on_extcmd {	719	attach_to_players
		720	on_extcmd => sub {
329	my ($pl, $buf) = @_;	721	my ($pl, $buf) = @_;
330		722
331	my $msg = eval { from_json $buf };	723	my $msg = eval { from_json $buf };
332		724
333	if (ref $msg) {	725	if (ref $msg) {
334	if (my $cb = $extcmd{$msg->{msgtype}}) {	726	if (my $cb = $extcmd{$msg->{msgtype}}) {
335	if (my %reply = $cb->[0]->($pl, $msg)) {	727	if (my %reply = $cb->[0]->($pl, $msg)) {
336	$pl->ext_reply ($msg->{msgid}, %reply);	728	$pl->ext_reply ($msg->{msgid}, %reply);
		729	}
		730	}
		731	} else {
		732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		733	}
		734
		735	cf::override;
		736	},
		737	;
		738
		739	#############################################################################
		740	# load/save/clean perl data associated with a map
		741
		742	*cf::mapsupport::on_clean = sub {
		743	my ($map) = @_;
		744
		745	my $path = $map->tmpname;
		746	defined $path or return;
		747
		748	unlink "$path.pst";
		749	};
		750
		751	attach_to_maps prio => -10000, package => cf::mapsupport::;
		752
		753	#############################################################################
		754	# load/save perl data associated with player->ob objects
		755
		756	sub all_objects(@) {
		757	@_, map all_objects ($_->inv), @_
		758	}
		759
		760	# TODO: compatibility cruft, remove when no longer needed
		761	attach_to_players
		762	on_load => sub {
		763	my ($pl, $path) = @_;
		764
		765	for my $o (all_objects $pl->ob) {
		766	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		767	$o->set_ob_key_value ("_perl_data");
		768
		769	%$o = %{ Storable::thaw pack "H*", $value };
337	}	770	}
338	}	771	}
339	} else {
340	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
341	}	772	},
342		773	;
343	1
344	}
345		774
346	#############################################################################	775	#############################################################################
347	# load/save/clean perl data associated with a map
348		776
349	*on_mapclean = sub {	777	=head2 CORE EXTENSIONS
350	my ($map) = @_;
351		778
352	my $path = $map->tmpname;	779	Functions and methods that extend core crossfire objects.
353	defined $path or return;
354		780
355	unlink "$path.cfperl";	781	=over 4
356	};
357
358	*on_mapin =
359	*on_mapload = sub {
360	my ($map) = @_;
361
362	my $path = $map->tmpname;
363	$path = $map->path unless defined $path;
364
365	open my $fh, "<:raw", "$path.cfperl"
366	or return; # no perl data
367
368	my $data = Storable::thaw do { local $/; <$fh> };
369
370	$data->{version} <= 1
371	or return; # too new
372
373	$map->_set_obs ($data->{obs});
374	};
375
376	*on_mapout = sub {
377	my ($map) = @_;
378
379	my $path = $map->tmpname;
380	$path = $map->path unless defined $path;
381
382	my $obs = $map->_get_obs;
383
384	if (defined $obs) {
385	open my $fh, ">:raw", "$path.cfperl"
386	or die "$path.cfperl: $!";
387
388	stat $path;
389
390	print $fh Storable::nfreeze {
391	size => (stat _)[7],
392	time => (stat _)[9],
393	version => 1,
394	obs => $obs,
395	};
396
397	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
398	} else {
399	unlink "$path.cfperl";
400	}
401	};
402
403	#############################################################################
404	# load/save perl data associated with player->ob objects
405
406	sub all_objects(@) {
407	@_, map all_objects ($_->inv), @_
408	}
409
410	*on_player_load = sub {
411	my ($ob, $path) = @_;
412
413	for my $o (all_objects $ob) {
414	if (my $value = $o->get_ob_key_value ("_perl_data")) {
415	$o->set_ob_key_value ("_perl_data");
416
417	%$o = %{ Storable::thaw pack "H*", $value };
418	}
419	}
420	};
421
422	*on_player_save = sub {
423	my ($ob, $path) = @_;
424
425	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
426	for grep %$_, all_objects $ob;
427	};
428
429	#############################################################################
430	# core extensions - in perl
431		782
432	=item cf::player::exists $login	783	=item cf::player::exists $login
433		784
434	Returns true when the given account exists.	785	Returns true when the given account exists.
435		786
…		…
438	sub cf::player::exists($) {	789	sub cf::player::exists($) {
439	cf::player::find $_[0]	790	cf::player::find $_[0]
440	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
441	}	792	}
442		793
443	=item $player->reply ($npc, $msg[, $flags])	794	=item $player_object->reply ($npc, $msg[, $flags])
444		795
445	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
446	can be C<undef>. Does the right thing when the player is currently in a	797	can be C<undef>. Does the right thing when the player is currently in a
447	dialogue with the given NPC character.	798	dialogue with the given NPC character.
448		799
…		…
475	$msg{msgid} = $id;	826	$msg{msgid} = $id;
476		827
477	$self->send ("ext " . to_json \%msg);	828	$self->send ("ext " . to_json \%msg);
478	}	829	}
479		830
		831	=item $player_object->may ("access")
		832
		833	Returns wether the given player is authorized to access resource "access"
		834	(e.g. "command_wizcast").
		835
		836	=cut
		837
		838	sub cf::object::player::may {
		839	my ($self, $access) = @_;
		840
		841	$self->flag (cf::FLAG_WIZ) \|\|
		842	(ref $cf::CFG{"may_$access"}
		843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		844	: $cf::CFG{"may_$access"})
		845	}
		846
		847	=cut
		848
480	#############################################################################	849	#############################################################################
481	# map scripting support
482		850
		851	=head2 SAFE SCRIPTING
		852
		853	Functions that provide a safe environment to compile and execute
		854	snippets of perl code without them endangering the safety of the server
		855	itself. Looping constructs, I/O operators and other built-in functionality
		856	is not available in the safe scripting environment, and the number of
		857	functions and methods that can be called is greatly reduced.
		858
		859	=cut
		860
483	our $safe = new Safe "ext";	861	our $safe = new Safe "safe";
484	our $safe_hole = new Safe::Hole;	862	our $safe_hole = new Safe::Hole;
485		863
486	$SIG{FPE} = 'IGNORE';	864	$SIG{FPE} = 'IGNORE';
487		865
488	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	866	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
489		867
490	# here we export the classes and methods available to script code	868	# here we export the classes and methods available to script code
		869
		870	=pod
		871
		872	The following fucntions and emthods are available within a safe environment:
		873
		874	cf::object contr pay_amount pay_player
		875	cf::object::player player
		876	cf::player peaceful
		877
		878	=cut
491		879
492	for (	880	for (
493	["cf::object" => qw(contr pay_amount pay_player)],	881	["cf::object" => qw(contr pay_amount pay_player)],
494	["cf::object::player" => qw(player)],	882	["cf::object::player" => qw(player)],
495	["cf::player" => qw(peaceful)],	883	["cf::player" => qw(peaceful)],
496	) {	884	) {
497	no strict 'refs';	885	no strict 'refs';
498	my ($pkg, @funs) = @$_;	886	my ($pkg, @funs) = @$_;
499	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
500	for @funs;	888	for @funs;
501	}	889	}
		890
		891	=over 4
		892
		893	=item @retval = safe_eval $code, [var => value, ...]
		894
		895	Compiled and executes the given perl code snippet. additional var/value
		896	pairs result in temporary local (my) scalar variables of the given name
		897	that are available in the code snippet. Example:
		898
		899	my $five = safe_eval '$first + $second', first => 1, second => 4;
		900
		901	=cut
502		902
503	sub safe_eval($;@) {	903	sub safe_eval($;@) {
504	my ($code, %vars) = @_;	904	my ($code, %vars) = @_;
505		905
506	my $qcode = $code;	906	my $qcode = $code;
507	$qcode =~ s/"/‟/g; # not allowed in #line filenames	907	$qcode =~ s/"/‟/g; # not allowed in #line filenames
508	$qcode =~ s/\n/\\n/g;	908	$qcode =~ s/\n/\\n/g;
509		909
510	local $_;	910	local $_;
511	local @ext::cf::_safe_eval_args = values %vars;	911	local @safe::cf::_safe_eval_args = values %vars;
512		912
513	$code =	913	my $eval =
514	"do {\n"	914	"do {\n"
515	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	915	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
516	. "#line 0 \"{$qcode}\"\n"	916	. "#line 0 \"{$qcode}\"\n"
517	. $code	917	. $code
518	. "\n}"	918	. "\n}"
519	;	919	;
520		920
521	sub_generation_inc;	921	sub_generation_inc;
522	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	922	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
523	sub_generation_inc;	923	sub_generation_inc;
524		924
		925	if ($@) {
		926	warn "$@";
		927	warn "while executing safe code '$code'\n";
		928	warn "with arguments " . (join " ", %vars) . "\n";
		929	}
		930
525	wantarray ? @res : $res[0]	931	wantarray ? @res : $res[0]
526	}	932	}
		933
		934	=item cf::register_script_function $function => $cb
		935
		936	Register a function that can be called from within map/npc scripts. The
		937	function should be reasonably secure and should be put into a package name
		938	like the extension.
		939
		940	Example: register a function that gets called whenever a map script calls
		941	C<rent::overview>, as used by the C<rent> extension.
		942
		943	cf::register_script_function "rent::overview" => sub {
		944	...
		945	};
		946
		947	=cut
527		948
528	sub register_script_function {	949	sub register_script_function {
529	my ($fun, $cb) = @_;	950	my ($fun, $cb) = @_;
530		951
531	no strict 'refs';	952	no strict 'refs';
532	*{"ext::$fun"} = $safe_hole->wrap ($cb);	953	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		954	}
		955
		956	=back
		957
		958	=cut
		959
		960	#############################################################################
		961
		962	=head2 EXTENSION DATABASE SUPPORT
		963
		964	Crossfire maintains a very simple database for extension use. It can
		965	currently store anything that can be serialised using Storable, which
		966	excludes objects.
		967
		968	The parameter C<$family> should best start with the name of the extension
		969	using it, it should be unique.
		970
		971	=over 4
		972
		973	=item $hashref = cf::db_get $family
		974
		975	Return a hashref for use by the extension C<$family>, which can be
		976	modified. After modifications, you have to call C<cf::db_dirty> or
		977	C<cf::db_sync>.
		978
		979	=item $value = cf::db_get $family => $key
		980
		981	Returns a single value from the database
		982
		983	=item cf::db_put $family => $hashref
		984
		985	Stores the given family hashref into the database. Updates are delayed, if
		986	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		987
		988	=item cf::db_put $family => $key => $value
		989
		990	Stores the given C<$value> in the family hash. Updates are delayed, if you
		991	want the data to be synced to disk immediately, use C<cf::db_sync>.
		992
		993	=item cf::db_dirty
		994
		995	Marks the database as dirty, to be updated at a later time.
		996
		997	=item cf::db_sync
		998
		999	Immediately write the database to disk I<if it is dirty>.
		1000
		1001	=cut
		1002
		1003	our $DB;
		1004
		1005	{
		1006	my $path = cf::localdir . "/database.pst";
		1007
		1008	sub db_load() {
		1009	warn "loading database $path\n";#d# remove later
		1010	$DB = stat $path ? Storable::retrieve $path : { };
		1011	}
		1012
		1013	my $pid;
		1014
		1015	sub db_save() {
		1016	warn "saving database $path\n";#d# remove later
		1017	waitpid $pid, 0 if $pid;
		1018	if (0 == ($pid = fork)) {
		1019	$DB->{_meta}{version} = 1;
		1020	Storable::nstore $DB, "$path~";
		1021	rename "$path~", $path;
		1022	cf::_exit 0 if defined $pid;
		1023	}
		1024	}
		1025
		1026	my $dirty;
		1027
		1028	sub db_sync() {
		1029	db_save if $dirty;
		1030	undef $dirty;
		1031	}
		1032
		1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
		1034	db_sync;
		1035	});
		1036
		1037	sub db_dirty() {
		1038	$dirty = 1;
		1039	$idle->start;
		1040	}
		1041
		1042	sub db_get($;$) {
		1043	@_ >= 2
		1044	? $DB->{$_[0]}{$_[1]}
		1045	: ($DB->{$_[0]} \|\|= { })
		1046	}
		1047
		1048	sub db_put($$;$) {
		1049	if (@_ >= 3) {
		1050	$DB->{$_[0]}{$_[1]} = $_[2];
		1051	} else {
		1052	$DB->{$_[0]} = $_[1];
		1053	}
		1054	db_dirty;
		1055	}
		1056
		1057	attach_global
		1058	prio => 10000,
		1059	on_cleanup => sub {
		1060	db_sync;
		1061	},
		1062	;
533	}	1063	}
534		1064
535	#############################################################################	1065	#############################################################################
536	# the server's main()	1066	# the server's main()
537		1067
538	sub run {	1068	sub cfg_load {
		1069	open my $fh, "<:utf8", cf::confdir . "/config"
		1070	or return;
		1071
		1072	local $/;
		1073	*CFG = YAML::Syck::Load <$fh>;
		1074	}
		1075
		1076	sub main {
		1077	cfg_load;
		1078	db_load;
		1079	load_extensions;
539	Event::loop;	1080	Event::loop;
540	}	1081	}
541		1082
542	#############################################################################	1083	#############################################################################
543	# initialisation	1084	# initialisation
544		1085
		1086	sub _perl_reload(&) {
		1087	my ($msg) = @_;
		1088
		1089	$msg->("reloading...");
		1090
		1091	eval {
		1092	# cancel all watchers
		1093	$_->cancel for Event::all_watchers;
		1094
		1095	# unload all extensions
		1096	for (@exts) {
		1097	$msg->("unloading <$_>");
		1098	unload_extension $_;
		1099	}
		1100
		1101	# unload all modules loaded from $LIBDIR
		1102	while (my ($k, $v) = each %INC) {
		1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1104
		1105	$msg->("removing <$k>");
		1106	delete $INC{$k};
		1107
		1108	$k =~ s/\.pm$//;
		1109	$k =~ s/\//::/g;
		1110
		1111	if (my $cb = $k->can ("unload_module")) {
		1112	$cb->();
		1113	}
		1114
		1115	Symbol::delete_package $k;
		1116	}
		1117
		1118	# sync database to disk
		1119	cf::db_sync;
		1120
		1121	# get rid of safe::, as good as possible
		1122	Symbol::delete_package "safe::$_"
		1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1124
		1125	# remove register_script_function callbacks
		1126	# TODO
		1127
		1128	# unload cf.pm "a bit"
		1129	delete $INC{"cf.pm"};
		1130
		1131	# don't, removes xs symbols, too,
		1132	# and global variables created in xs
		1133	#Symbol::delete_package __PACKAGE__;
		1134
		1135	# reload cf.pm
		1136	$msg->("reloading cf.pm");
		1137	require cf;
		1138
		1139	# load config and database again
		1140	cf::cfg_load;
		1141	cf::db_load;
		1142
		1143	# load extensions
		1144	$msg->("load extensions");
		1145	cf::load_extensions;
		1146
		1147	# reattach attachments to objects
		1148	$msg->("reattach");
		1149	_global_reattach;
		1150	};
		1151	$msg->($@) if $@;
		1152
		1153	$msg->("reloaded");
		1154	};
		1155
		1156	sub perl_reload() {
		1157	_perl_reload {
		1158	warn $_[0];
		1159	print "$_[0]\n";
		1160	};
		1161	}
		1162
		1163	register_command "perl-reload", 0, sub {
		1164	my ($who, $arg) = @_;
		1165
		1166	if ($who->flag (FLAG_WIZ)) {
		1167	_perl_reload {
		1168	warn $_[0];
		1169	$who->message ($_[0]);
		1170	};
		1171	}
		1172	};
		1173
545	register "<global>", __PACKAGE__;	1174	register "<global>", __PACKAGE__;
546		1175
547	unshift @INC, $LIBDIR;	1176	unshift @INC, $LIBDIR;
548		1177
549	load_extensions;
550
551	$TICK_WATCHER = Event->timer (	1178	$TICK_WATCHER = Event->timer (
552	prio => 1,	1179	prio => 1,
		1180	async => 1,
553	at => $NEXT_TICK \|\| 1,	1181	at => $NEXT_TICK \|\| 1,
554	cb => sub {	1182	cb => sub {
555	cf::server_tick; # one server iteration	1183	cf::server_tick; # one server iteration
556		1184
557	my $NOW = Event::time;	1185	my $NOW = Event::time;
558	$NEXT_TICK += $TICK;	1186	$NEXT_TICK += $TICK;
559		1187
560	# if we are delayed by four ticks, skip them all	1188	# if we are delayed by four ticks or more, skip them all
561	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
562		1190
563	$TICK_WATCHER->at ($NEXT_TICK);	1191	$TICK_WATCHER->at ($NEXT_TICK);
564	$TICK_WATCHER->start;	1192	$TICK_WATCHER->start;
565	},	1193	},
566	);	1194	);
567		1195
		1196	IO::AIO::max_poll_time $TICK * 0.2;
		1197
		1198	Event->io (fd => IO::AIO::poll_fileno,
		1199	poll => 'r',
		1200	prio => 5,
		1201	cb => \&IO::AIO::poll_cb);
		1202
568	1	1203	1
569		1204

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.38 by root, Thu Aug 24 17:29:30 2006 UTC vs. Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.38 by root, Thu Aug 24 17:29:30 2006 UTC vs.
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC