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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.5 by root, Wed Feb 8 03:46:15 2006 UTC vs.
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC

…		…
1	package cf;	1	package cf;
2		2
3	use Symbol;	3	use Symbol;
4	use List::Util;	4	use List::Util;
		5	use Storable;
		6	use Opcode;
		7	use Safe;
		8	use Safe::Hole;
		9
		10	use YAML::Syck ();
		11	use Time::HiRes;
		12	use Event;
		13	$Event::Eval = 1; # no idea why this is required, but it is
		14
		15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		16	$YAML::Syck::ImplicitUnicode = 1;
5		17
6	use strict;	18	use strict;
7		19
		20	_init_vars;
		21
8	our %COMMAND;	22	our %COMMAND = ();
9	our @EVENT;	23	our @EVENT;
10	our %PROP_TYPE;	24	our $LIBDIR = maps_directory "perl";
11	our %PROP_IDX;	25
		26	our $TICK = MAX_TIME * 1e-6;
		27	our $TICK_WATCHER;
		28	our $NEXT_TICK;
		29
		30	our %CFG;
		31
		32	our $uptime;
		33
		34	$uptime \|\|= time;
		35
		36	#############################################################################
		37
		38	=head2 GLOBAL VARIABLES
		39
		40	=over 4
		41
		42	=item $cf::LIBDIR
		43
		44	The perl library directory, where extensions and cf-specific modules can
		45	be found. It will be added to C<@INC> automatically.
		46
		47	=item $cf::TICK
		48
		49	The interval between server ticks, in seconds.
		50
		51	=item %cf::CFG
		52
		53	Configuration for the server, loaded from C</etc/crossfire/config>, or
		54	from wherever your confdir points to.
		55
		56	=back
		57
		58	=cut
12		59
13	BEGIN {	60	BEGIN {
14	@EVENT = map lc, @EVENT;
15
16	*CORE::GLOBAL::warn = sub {	61	*CORE::GLOBAL::warn = sub {
17	my $msg = join "", @_;	62	my $msg = join "", @_;
18	$msg .= "\n"	63	$msg .= "\n"
19	unless $msg =~ /\n$/;	64	unless $msg =~ /\n$/;
20		65
21	print STDERR "cfperl: $msg";	66	print STDERR "cfperl: $msg";
22	LOG llevError, "cfperl: $msg";	67	LOG llevError, "cfperl: $msg";
23	};	68	};
24	}	69	}
25		70
26	# generate property mutators	71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
27	sub prop_gen {
28	my ($prefix, $class) = @_;
29		72
		73	# we bless all objects into (empty) derived classes to force a method lookup
		74	# within the Safe compartment.
		75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {
30	no strict 'refs';	76	no strict 'refs';
31		77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
32	for my $prop (keys %PROP_TYPE) {
33	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
34	my $sub = lc $1;
35
36	my $type = $PROP_TYPE{$prop};
37	my $idx = $PROP_IDX {$prop};
38
39	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
40	$_[0]->get_property ($type, $idx)
41	};
42
43	*{"$class\::set_$sub"} = sub {
44	$_[0]->set_property ($type, $idx, $_[1]);
45	};
46	}
47	}	78	}
48		79
49	# auto-generate most of the API	80	$Event::DIED = sub {
50		81	warn "error in event callback: @_";
51	prop_gen OBJECT_PROP => "cf::object";	82	};
52	# CFAPI_OBJECT_ANIMATION?
53	prop_gen PLAYER_PROP => "cf::object::player";
54
55	prop_gen MAP_PROP => "cf::map";
56	prop_gen ARCH_PROP => "cf::arch";
57
58	# guessed hierarchies
59
60	@cf::object::player::ISA = 'cf::object';
61	@cf::object::map::ISA = 'cf::object';
62		83
63	my %ext_pkg;	84	my %ext_pkg;
64	my @exts;	85	my @exts;
65	my @hook;	86	my @hook;
66	my %command;	87	my %command;
		88	my %extcmd;
		89
		90	=head2 UTILITY FUNCTIONS
		91
		92	=over 4
		93
		94	=cut
		95
		96	use JSON::Syck (); # TODO# replace by JSON::PC once working
		97
		98	=item $ref = cf::from_json $json
		99
		100	Converts a JSON string into the corresponding perl data structure.
		101
		102	=cut
		103
		104	sub from_json($) {
		105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		106	JSON::Syck::Load $_[0]
		107	}
		108
		109	=item $json = cf::to_json $ref
		110
		111	Converts a perl data structure into its JSON representation.
		112
		113	=cut
		114
		115	sub to_json($) {
		116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		117	JSON::Syck::Dump $_[0]
		118	}
		119
		120	=back
		121
		122	=cut
		123
		124	#############################################################################
		125
		126	=head2 EVENTS AND OBJECT ATTACHMENTS
		127
		128	=over 4
		129
		130	=item $object->attach ($attachment, key => $value...)
		131
		132	=item $object->detach ($attachment)
		133
		134	Attach/detach a pre-registered attachment to an object.
		135
		136	=item $player->attach ($attachment, key => $value...)
		137
		138	=item $player->detach ($attachment)
		139
		140	Attach/detach a pre-registered attachment to a player.
		141
		142	=item $map->attach ($attachment, key => $value...)
		143
		144	=item $map->detach ($attachment)
		145
		146	Attach/detach a pre-registered attachment to a map.
		147
		148	=item $bool = $object->attached ($name)
		149
		150	=item $bool = $player->attached ($name)
		151
		152	=item $bool = $map->attached ($name)
		153
		154	Checks wether the named attachment is currently attached to the object.
		155
		156	=item cf::attach_global ...
		157
		158	Attach handlers for global events.
		159
		160	This and all following C<attach_*>-functions expect any number of the
		161	following handler/hook descriptions:
		162
		163	=over 4
		164
		165	=item prio => $number
		166
		167	Set the priority for all following handlers/hooks (unless overwritten
		168	by another C<prio> setting). Lower priority handlers get executed
		169	earlier. The default priority is C<0>, and many built-in handlers are
		170	registered at priority C<-1000>, so lower priorities should not be used
		171	unless you know what you are doing.
		172
		173	=item on_I<event> => \&cb
		174
		175	Call the given code reference whenever the named event happens (event is
		176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		177	handlers are recognised generally depends on the type of object these
		178	handlers attach to).
		179
		180	See F<include/eventinc.h> for the full list of events supported, and their
		181	class.
		182
		183	=item package => package::
		184
		185	Look for sub functions of the name C<< on_I<event> >> in the given
		186	package and register them. Only handlers for eevents supported by the
		187	object/class are recognised.
		188
		189	=back
		190
		191	=item cf::attach_to_type $object_type, $subtype, ...
		192
		193	Attach handlers for a specific object type (e.g. TRANSPORT) and
		194	subtype. If C<$subtype> is zero or undef, matches all objects of the given
		195	type.
		196
		197	=item cf::attach_to_objects ...
		198
		199	Attach handlers to all objects. Do not use this except for debugging or
		200	very rare events, as handlers are (obviously) called for I<all> objects in
		201	the game.
		202
		203	=item cf::attach_to_players ...
		204
		205	Attach handlers to all players.
		206
		207	=item cf::attach_to_maps ...
		208
		209	Attach handlers to all maps.
		210
		211	=item cf:register_attachment $name, ...
		212
		213	Register an attachment by name through which objects can refer to this
		214	attachment.
		215
		216	=item cf:register_player_attachment $name, ...
		217
		218	Register an attachment by name through which players can refer to this
		219	attachment.
		220
		221	=item cf:register_map_attachment $name, ...
		222
		223	Register an attachment by name through which maps can refer to this
		224	attachment.
		225
		226	=cut
		227
		228	# the following variables are defined in .xs and must not be re-created
		229	our @CB_GLOBAL = (); # registry for all global events
		230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		231	our @CB_PLAYER = ();
		232	our @CB_TYPE = (); # registry for type (cf-object class) based events
		233	our @CB_MAP = ();
		234
		235	my %attachment;
		236
		237	sub _attach_cb($\%$$$) {
		238	my ($registry, $undo, $event, $prio, $cb) = @_;
		239
		240	use sort 'stable';
		241
		242	$cb = [$prio, $cb];
		243
		244	@{$registry->[$event]} = sort
		245	{ $a->[0] cmp $b->[0] }
		246	@{$registry->[$event] \|\| []}, $cb;
		247
		248	push @{$undo->{cb}}, [$event, $cb];
		249	}
		250
		251	# attach handles attaching event callbacks
		252	# the only thing the caller has to do is pass the correct
		253	# registry (== where the callback attaches to).
		254	sub _attach(\@$@) {
		255	my ($registry, $klass, @arg) = @_;
		256
		257	my $prio = 0;
		258
		259	my %undo = (
		260	registry => $registry,
		261	cb => [],
		262	);
		263
		264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		265
		266	while (@arg) {
		267	my $type = shift @arg;
		268
		269	if ($type eq "prio") {
		270	$prio = shift @arg;
		271
		272	} elsif ($type eq "package") {
		273	my $pkg = shift @arg;
		274
		275	while (my ($name, $id) = each %cb_id) {
		276	if (my $cb = $pkg->can ($name)) {
		277	_attach_cb $registry, %undo, $id, $prio, $cb;
		278	}
		279	}
		280
		281	} elsif (exists $cb_id{$type}) {
		282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
		283
		284	} elsif (ref $type) {
		285	warn "attaching objects not supported, ignoring.\n";
		286
		287	} else {
		288	shift @arg;
		289	warn "attach argument '$type' not supported, ignoring.\n";
		290	}
		291	}
		292
		293	\%undo
		294	}
		295
		296	sub _attach_attachment {
		297	my ($obj, $name, %arg) = @_;
		298
		299	return if exists $obj->{_attachment}{$name};
		300
		301	my $res;
		302
		303	if (my $attach = $attachment{$name}) {
		304	my $registry = $obj->registry;
		305
		306	for (@$attach) {
		307	my ($klass, @attach) = @$_;
		308	$res = _attach @$registry, $klass, @attach;
		309	}
		310
		311	$obj->{$name} = \%arg;
		312	} else {
		313	warn "object uses attachment '$name' that is not available, postponing.\n";
		314	}
		315
		316	$obj->{_attachment}{$name} = undef;
		317
		318	$res->{attachment} = $name;
		319	$res
		320	}
		321
		322	*cf::object::attach =
		323	*cf::player::attach =
		324	*cf::map::attach = sub {
		325	my ($obj, $name, %arg) = @_;
		326
		327	_attach_attachment $obj, $name, %arg;
		328	};
		329
		330	# all those should be optimised
		331	*cf::object::detach =
		332	*cf::player::detach =
		333	*cf::map::detach = sub {
		334	my ($obj, $name) = @_;
		335
		336	delete $obj->{_attachment}{$name};
		337	reattach ($obj);
		338	};
		339
		340	*cf::object::attached =
		341	*cf::player::attached =
		342	*cf::map::attached = sub {
		343	my ($obj, $name) = @_;
		344
		345	exists $obj->{_attachment}{$name}
		346	};
		347
		348	sub attach_global {
		349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
		350	}
		351
		352	sub attach_to_type {
		353	my $type = shift;
		354	my $subtype = shift;
		355
		356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
		357	}
		358
		359	sub attach_to_objects {
		360	_attach @CB_OBJECT, KLASS_OBJECT, @_
		361	}
		362
		363	sub attach_to_players {
		364	_attach @CB_PLAYER, KLASS_PLAYER, @_
		365	}
		366
		367	sub attach_to_maps {
		368	_attach @CB_MAP, KLASS_MAP, @_
		369	}
		370
		371	sub register_attachment {
		372	my $name = shift;
		373
		374	$attachment{$name} = [[KLASS_OBJECT, @_]];
		375	}
		376
		377	sub register_player_attachment {
		378	my $name = shift;
		379
		380	$attachment{$name} = [[KLASS_PLAYER, @_]];
		381	}
		382
		383	sub register_map_attachment {
		384	my $name = shift;
		385
		386	$attachment{$name} = [[KLASS_MAP, @_]];
		387	}
		388
		389	our $override;
		390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		391
		392	sub override {
		393	$override = 1;
		394	@invoke_results = ();
		395	}
		396
		397	sub do_invoke {
		398	my $event = shift;
		399	my $callbacks = shift;
		400
		401	@invoke_results = ();
		402
		403	local $override;
		404
		405	for (@$callbacks) {
		406	eval { &{$_->[1]} };
		407
		408	if ($@) {
		409	warn "$@";
		410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		411	override;
		412	}
		413
		414	return 1 if $override;
		415	}
		416
		417	0
		418	}
		419
		420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		421
		422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		423
		424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		425
		426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		427
		428	Generate a global/object/player/map-specific event with the given arguments.
		429
		430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		431	removed in future versions), and there is no public API to access override
		432	results (if you must, access C<@cf::invoke_results> directly).
		433
		434	=back
		435
		436	=cut
		437
		438	#############################################################################
		439
		440	=head2 METHODS VALID FOR ALL CORE OBJECTS
		441
		442	=over 4
		443
		444	=item $object->valid, $player->valid, $map->valid
		445
		446	Just because you have a perl object does not mean that the corresponding
		447	C-level object still exists. If you try to access an object that has no
		448	valid C counterpart anymore you get an exception at runtime. This method
		449	can be used to test for existence of the C object part without causing an
		450	exception.
		451
		452	=back
		453
		454	=cut
		455
		456	*cf::object::valid =
		457	*cf::player::valid =
		458	*cf::map::valid = \&cf::_valid;
		459
		460	#############################################################################
		461	# object support
		462
		463	sub instantiate {
		464	my ($obj, $data) = @_;
		465
		466	$data = from_json $data;
		467
		468	for (@$data) {
		469	my ($name, $args) = @$_;
		470
		471	$obj->attach ($name, %{$args \|\| {} });
		472	}
		473	}
		474
		475	# basically do the same as instantiate, without calling instantiate
		476	sub reattach {
		477	my ($obj) = @_;
		478	my $registry = $obj->registry;
		479
		480	@$registry = ();
		481
		482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		483
		484	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
		485	if (my $attach = $attachment{$name}) {
		486	for (@$attach) {
		487	my ($klass, @attach) = @$_;
		488	_attach @$registry, $klass, @attach;
		489	}
		490	} else {
		491	warn "object uses attachment '$name' that is not available, postponing.\n";
		492	}
		493	}
		494	}
		495
		496	sub object_freezer_save {
		497	my ($filename, $rdata, $objs) = @_;
		498
		499	if (length $$rdata) {
		500	warn sprintf "saving %s (%d,%d)\n",
		501	$filename, length $$rdata, scalar @$objs;
		502
		503	if (open my $fh, ">:raw", "$filename~") {
		504	chmod SAVE_MODE, $fh;
		505	syswrite $fh, $$rdata;
		506	close $fh;
		507
		508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		509	chmod SAVE_MODE, $fh;
		510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		511	close $fh;
		512	rename "$filename.pst~", "$filename.pst";
		513	} else {
		514	unlink "$filename.pst";
		515	}
		516
		517	rename "$filename~", $filename;
		518	} else {
		519	warn "FATAL: $filename~: $!\n";
		520	}
		521	} else {
		522	unlink $filename;
		523	unlink "$filename.pst";
		524	}
		525	}
		526
		527	sub object_thawer_load {
		528	my ($filename) = @_;
		529
		530	local $/;
		531
		532	my $av;
		533
		534	#TODO: use sysread etc.
		535	if (open my $data, "<:raw:perlio", $filename) {
		536	$data = <$data>;
		537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		538	$av = eval { (Storable::thaw <$pst>)->{objs} };
		539	}
		540	return ($data, $av);
		541	}
		542
		543	()
		544	}
		545
		546	attach_to_objects
		547	prio => -1000000,
		548	on_clone => sub {
		549	my ($src, $dst) = @_;
		550
		551	@{$dst->registry} = @{$src->registry};
		552
		553	%$dst = %$src;
		554
		555	%{$dst->{_attachment}} = %{$src->{_attachment}}
		556	if exists $src->{_attachment};
		557	},
		558	;
		559
		560	#############################################################################
		561	# old plug-in events
67		562
68	sub inject_event {	563	sub inject_event {
69	my ($data) = @_;	564	my $extension = shift;
		565	my $event_code = shift;
70		566
71	my $cb = $hook[$data->{event_code}]{$data->{extension}}	567	my $cb = $hook[$event_code]{$extension}
72	or return;	568	or return;
73		569
74	$cb->($data)	570	&$cb
75	}	571	}
76		572
77	sub inject_global_event {	573	sub inject_global_event {
78	my ($data) = @_;	574	my $event = shift;
79		575
80	my $cb = $hook[$data->{event_code}]	576	my $cb = $hook[$event]
81	or return;	577	or return;
82		578
83	$_->($data) for values %$cb;	579	List::Util::max map &$_, values %$cb
84
85	()
86	}	580	}
87		581
88	sub inject_command {	582	sub inject_command {
89	my ($name, $obj, $params) = @_;	583	my ($name, $obj, $params) = @_;
90		584
97		591
98	sub register_command {	592	sub register_command {
99	my ($name, $time, $cb) = @_;	593	my ($name, $time, $cb) = @_;
100		594
101	my $caller = caller;	595	my $caller = caller;
102
103	warn "registering command '$name/$time' to '$caller'";	596	#warn "registering command '$name/$time' to '$caller'";
104		597
105	push @{ $command{$name} }, [$time, $cb, $caller];	598	push @{ $command{$name} }, [$time, $cb, $caller];
106	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };	599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
		600	}
		601
		602	sub register_extcmd {
		603	my ($name, $cb) = @_;
		604
		605	my $caller = caller;
		606	#warn "registering extcmd '$name' to '$caller'";
		607
		608	$extcmd{$name} = [$cb, $caller];
		609	}
		610
		611	sub register {
		612	my ($base, $pkg) = @_;
		613
		614	#TODO
107	}	615	}
108		616
109	sub load_extension {	617	sub load_extension {
110	my ($path) = @_;	618	my ($path) = @_;
111		619
112	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
113	my $base = $1;	621	my $base = $1;
114	my $pkg = $1;	622	my $pkg = $1;
115	$pkg =~ s/[^[:word:]]/_/g;	623	$pkg =~ s/[^[:word:]]/_/g;
116	$pkg = "cf::ext::$pkg";	624	$pkg = "ext::$pkg";
117		625
118	warn "loading '$path' into '$pkg'\n";	626	warn "loading '$path' into '$pkg'\n";
119		627
120	open my $fh, "<:utf8", $path	628	open my $fh, "<:utf8", $path
121	or die "$path: $!";	629	or die "$path: $!";
…		…
130	or die "$path: $@";	638	or die "$path: $@";
131		639
132	push @exts, $pkg;	640	push @exts, $pkg;
133	$ext_pkg{$base} = $pkg;	641	$ext_pkg{$base} = $pkg;
134		642
135	no strict 'refs';	643	# no strict 'refs';
136
137	# @{"$pkg\::ISA"} = cf::ext::;	644	# @{"$pkg\::ISA"} = ext::;
138		645
139	for my $idx (0 .. $#EVENT) {	646	register $base, $pkg;
140	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
141	warn "registering $EVENT[$idx] hook\n";
142	$hook[$idx]{$base} = $ref;
143	}
144	}
145	}	647	}
146		648
147	sub unload_extension {	649	sub unload_extension {
148	my ($pkg) = @_;	650	my ($pkg) = @_;
149		651
150	warn "removing extension $pkg\n";	652	warn "removing extension $pkg\n";
151		653
152	# remove hooks	654	# remove hooks
		655	#TODO
153	for my $idx (0 .. $#EVENT) {	656	# for my $idx (0 .. $#PLUGIN_EVENT) {
154	delete $hook[$idx]{$pkg};	657	# delete $hook[$idx]{$pkg};
155	}	658	# }
156		659
157	# remove commands	660	# remove commands
158	for my $name (keys %command) {	661	for my $name (keys %command) {
159	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
160		663
…		…
165	delete $command{$name};	668	delete $command{$name};
166	delete $COMMAND{"$name\000"};	669	delete $COMMAND{"$name\000"};
167	}	670	}
168	}	671	}
169		672
		673	# remove extcmds
		674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
		675	delete $extcmd{$name};
		676	}
		677
		678	if (my $cb = $pkg->can ("unload")) {
		679	eval {
		680	$cb->($pkg);
		681	1
		682	} or warn "$pkg unloaded, but with errors: $@";
		683	}
		684
170	Symbol::delete_package $pkg;	685	Symbol::delete_package $pkg;
171	}	686	}
172		687
173	sub load_extensions {	688	sub load_extensions {
174	my $LIBDIR = maps_directory "perl";	689	my $LIBDIR = maps_directory "perl";
…		…
180	1	695	1
181	} or warn "$ext not loaded: $@";	696	} or warn "$ext not loaded: $@";
182	}	697	}
183	}	698	}
184		699
		700	#############################################################################
		701	# extcmd framework, basically convert ext <msg>
		702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
		703
		704	attach_to_players
		705	on_extcmd => sub {
		706	my ($pl, $buf) = @_;
		707
		708	my $msg = eval { from_json $buf };
		709
		710	if (ref $msg) {
		711	if (my $cb = $extcmd{$msg->{msgtype}}) {
		712	if (my %reply = $cb->[0]->($pl, $msg)) {
		713	$pl->ext_reply ($msg->{msgid}, %reply);
		714	}
		715	}
		716	} else {
		717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		718	}
		719
		720	cf::override;
		721	},
		722	;
		723
		724	#############################################################################
		725	# load/save/clean perl data associated with a map
		726
		727	*cf::mapsupport::on_clean = sub {
		728	my ($map) = @_;
		729
		730	my $path = $map->tmpname;
		731	defined $path or return;
		732
		733	unlink "$path.pst";
		734	};
		735
		736	attach_to_maps prio => -10000, package => cf::mapsupport::;
		737
		738	#############################################################################
		739	# load/save perl data associated with player->ob objects
		740
		741	sub all_objects(@) {
		742	@_, map all_objects ($_->inv), @_
		743	}
		744
		745	# TODO: compatibility cruft, remove when no longer needed
		746	attach_to_players
		747	on_load => sub {
		748	my ($pl, $path) = @_;
		749
		750	for my $o (all_objects $pl->ob) {
		751	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		752	$o->set_ob_key_value ("_perl_data");
		753
		754	%$o = %{ Storable::thaw pack "H*", $value };
		755	}
		756	}
		757	},
		758	;
		759
		760	#############################################################################
		761
		762	=head2 CORE EXTENSIONS
		763
		764	Functions and methods that extend core crossfire objects.
		765
		766	=over 4
		767
		768	=item cf::player::exists $login
		769
		770	Returns true when the given account exists.
		771
		772	=cut
		773
		774	sub cf::player::exists($) {
		775	cf::player::find $_[0]
		776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
		777	}
		778
		779	=item $object->reply ($npc, $msg[, $flags])
		780
		781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		782	can be C<undef>. Does the right thing when the player is currently in a
		783	dialogue with the given NPC character.
		784
		785	=cut
		786
		787	# rough implementation of a future "reply" method that works
		788	# with dialog boxes.
		789	sub cf::object::player::reply($$$;$) {
		790	my ($self, $npc, $msg, $flags) = @_;
		791
		792	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
		793
		794	if ($self->{record_replies}) {
		795	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		796	} else {
		797	$msg = $npc->name . " says: $msg" if $npc;
		798	$self->message ($msg, $flags);
		799	}
		800	}
		801
		802	=item $player->ext_reply ($msgid, $msgtype, %msg)
		803
		804	Sends an ext reply to the player.
		805
		806	=cut
		807
		808	sub cf::player::ext_reply($$$%) {
		809	my ($self, $id, %msg) = @_;
		810
		811	$msg{msgid} = $id;
		812
		813	$self->send ("ext " . to_json \%msg);
		814	}
		815
		816	=back
		817
		818	=cut
		819
		820	#############################################################################
		821
		822	=head2 SAFE SCRIPTING
		823
		824	Functions that provide a safe environment to compile and execute
		825	snippets of perl code without them endangering the safety of the server
		826	itself. Looping constructs, I/O operators and other built-in functionality
		827	is not available in the safe scripting environment, and the number of
		828	functions and methods that cna be called is greatly reduced.
		829
		830	=cut
		831
		832	our $safe = new Safe "safe";
		833	our $safe_hole = new Safe::Hole;
		834
		835	$SIG{FPE} = 'IGNORE';
		836
		837	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		838
		839	# here we export the classes and methods available to script code
		840
		841	=pod
		842
		843	The following fucntions and emthods are available within a safe environment:
		844
		845	cf::object contr pay_amount pay_player
		846	cf::object::player player
		847	cf::player peaceful
		848
		849	=cut
		850
		851	for (
		852	["cf::object" => qw(contr pay_amount pay_player)],
		853	["cf::object::player" => qw(player)],
		854	["cf::player" => qw(peaceful)],
		855	) {
		856	no strict 'refs';
		857	my ($pkg, @funs) = @$_;
		858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		859	for @funs;
		860	}
		861
		862	=over 4
		863
		864	=item @retval = safe_eval $code, [var => value, ...]
		865
		866	Compiled and executes the given perl code snippet. additional var/value
		867	pairs result in temporary local (my) scalar variables of the given name
		868	that are available in the code snippet. Example:
		869
		870	my $five = safe_eval '$first + $second', first => 1, second => 4;
		871
		872	=cut
		873
		874	sub safe_eval($;@) {
		875	my ($code, %vars) = @_;
		876
		877	my $qcode = $code;
		878	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		879	$qcode =~ s/\n/\\n/g;
		880
		881	local $_;
		882	local @safe::cf::_safe_eval_args = values %vars;
		883
		884	my $eval =
		885	"do {\n"
		886	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		887	. "#line 0 \"{$qcode}\"\n"
		888	. $code
		889	. "\n}"
		890	;
		891
		892	sub_generation_inc;
		893	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		894	sub_generation_inc;
		895
		896	if ($@) {
		897	warn "$@";
		898	warn "while executing safe code '$code'\n";
		899	warn "with arguments " . (join " ", %vars) . "\n";
		900	}
		901
		902	wantarray ? @res : $res[0]
		903	}
		904
		905	=item cf::register_script_function $function => $cb
		906
		907	Register a function that can be called from within map/npc scripts. The
		908	function should be reasonably secure and should be put into a package name
		909	like the extension.
		910
		911	Example: register a function that gets called whenever a map script calls
		912	C<rent::overview>, as used by the C<rent> extension.
		913
		914	cf::register_script_function "rent::overview" => sub {
		915	...
		916	};
		917
		918	=cut
		919
		920	sub register_script_function {
		921	my ($fun, $cb) = @_;
		922
		923	no strict 'refs';
		924	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		925	}
		926
		927	=back
		928
		929	=cut
		930
		931	#############################################################################
		932
		933	=head2 EXTENSION DATABASE SUPPORT
		934
		935	Crossfire maintains a very simple database for extension use. It can
		936	currently store anything that can be serialised using Storable, which
		937	excludes objects.
		938
		939	The parameter C<$family> should best start with the name of the extension
		940	using it, it should be unique.
		941
		942	=over 4
		943
		944	=item $hashref = cf::db_get $family
		945
		946	Return a hashref for use by the extension C<$family>, which can be
		947	modified. After modifications, you have to call C<cf::db_dirty> or
		948	C<cf::db_sync>.
		949
		950	=item $value = cf::db_get $family => $key
		951
		952	Returns a single value from the database
		953
		954	=item cf::db_put $family => $hashref
		955
		956	Stores the given family hashref into the database. Updates are delayed, if
		957	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		958
		959	=item cf::db_put $family => $key => $value
		960
		961	Stores the given C<$value> in the family hash. Updates are delayed, if you
		962	want the data to be synced to disk immediately, use C<cf::db_sync>.
		963
		964	=item cf::db_dirty
		965
		966	Marks the database as dirty, to be updated at a later time.
		967
		968	=item cf::db_sync
		969
		970	Immediately write the database to disk I<if it is dirty>.
		971
		972	=cut
		973
		974	{
		975	my $db;
		976	my $path = cf::localdir . "/database.pst";
		977
		978	sub db_load() {
		979	warn "loading database $path\n";#d# remove later
		980	$db = stat $path ? Storable::retrieve $path : { };
		981	}
		982
		983	my $pid;
		984
		985	sub db_save() {
		986	warn "saving database $path\n";#d# remove later
		987	waitpid $pid, 0 if $pid;
		988	if (0 == ($pid = fork)) {
		989	$db->{_meta}{version} = 1;
		990	Storable::nstore $db, "$path~";
		991	rename "$path~", $path;
		992	cf::_exit 0 if defined $pid;
		993	}
		994	}
		995
		996	my $dirty;
		997
		998	sub db_sync() {
		999	db_save if $dirty;
		1000	undef $dirty;
		1001	}
		1002
		1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
		1004	db_sync;
		1005	});
		1006
		1007	sub db_dirty() {
		1008	$dirty = 1;
		1009	$idle->start;
		1010	}
		1011
		1012	sub db_get($;$) {
		1013	@_ >= 2
		1014	? $db->{$_[0]}{$_[1]}
		1015	: ($db->{$_[0]} \|\|= { })
		1016	}
		1017
		1018	sub db_put($$;$) {
		1019	if (@_ >= 3) {
		1020	$db->{$_[0]}{$_[1]} = $_[2];
		1021	} else {
		1022	$db->{$_[0]} = $_[1];
		1023	}
		1024	db_dirty;
		1025	}
		1026
		1027	attach_global
		1028	prio => 10000,
		1029	on_cleanup => sub {
		1030	db_sync;
		1031	},
		1032	;
		1033	}
		1034
		1035	#############################################################################
		1036	# the server's main()
		1037
		1038	sub cfg_load {
		1039	open my $fh, "<:utf8", cf::confdir . "/config"
		1040	or return;
		1041
		1042	local $/;
		1043	*CFG = YAML::Syck::Load <$fh>;
		1044	}
		1045
		1046	sub main {
		1047	cfg_load;
		1048	db_load;
		1049	load_extensions;
		1050	Event::loop;
		1051	}
		1052
		1053	#############################################################################
		1054	# initialisation
		1055
		1056	sub _perl_reload(&) {
		1057	my ($msg) = @_;
		1058
		1059	$msg->("reloading...");
		1060
		1061	eval {
		1062	# cancel all watchers
		1063	$_->cancel for Event::all_watchers;
		1064
		1065	# unload all extensions
		1066	for (@exts) {
		1067	$msg->("unloading <$_>");
		1068	unload_extension $_;
		1069	}
		1070
		1071	# unload all modules loaded from $LIBDIR
		1072	while (my ($k, $v) = each %INC) {
		1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1074
		1075	$msg->("removing <$k>");
		1076	delete $INC{$k};
		1077
		1078	$k =~ s/\.pm$//;
		1079	$k =~ s/\//::/g;
		1080
		1081	if (my $cb = $k->can ("unload_module")) {
		1082	$cb->();
		1083	}
		1084
		1085	Symbol::delete_package $k;
		1086	}
		1087
		1088	# sync database to disk
		1089	cf::db_sync;
		1090
		1091	# get rid of safe::, as good as possible
		1092	Symbol::delete_package "safe::$_"
		1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1094
		1095	# remove register_script_function callbacks
		1096	# TODO
		1097
		1098	# unload cf.pm "a bit"
		1099	delete $INC{"cf.pm"};
		1100
		1101	# don't, removes xs symbols, too,
		1102	# and global variables created in xs
		1103	#Symbol::delete_package __PACKAGE__;
		1104
		1105	# reload cf.pm
		1106	$msg->("reloading cf.pm");
		1107	require cf;
		1108
		1109	# load config and database again
		1110	cf::cfg_load;
		1111	cf::db_load;
		1112
		1113	# load extensions
		1114	$msg->("load extensions");
		1115	cf::load_extensions;
		1116
		1117	# reattach attachments to objects
		1118	$msg->("reattach");
		1119	_global_reattach;
		1120	};
		1121	$msg->($@) if $@;
		1122
		1123	$msg->("reloaded");
		1124	};
		1125
		1126	sub perl_reload() {
		1127	_perl_reload {
		1128	warn $_[0];
		1129	print "$_[0]\n";
		1130	};
		1131	}
		1132
185	register_command "perl-reload", 0, sub {	1133	register_command "perl-reload", 0, sub {
186	my ($who, $arg) = @_;	1134	my ($who, $arg) = @_;
187		1135
188	if ($who->flag (FLAG_WIZ)) {	1136	if ($who->flag (FLAG_WIZ)) {
189	$who->message ("reloading...");	1137	_perl_reload {
190		1138	warn $_[0];
191	warn "reloading...\n";	1139	$who->message ($_[0]);
192	eval {
193	unload_extension $_ for @exts;
194	delete $INC{"cf.pm"};
195
196	# don't, removes xs symbols, too
197	#Symbol::delete_package $pkg;
198
199	require cf;
200	};	1140	};
201	warn $@ if $@;
202	$who->message ($@) if $@;
203	warn "reloaded\n";
204
205	$who->message ("reloaded");
206	} else {
207	$who->message ("Intruder Alert!");
208	}	1141	}
209	};	1142	};
210		1143
211	load_extensions;	1144	register "<global>", __PACKAGE__;
		1145
		1146	unshift @INC, $LIBDIR;
		1147
		1148	$TICK_WATCHER = Event->timer (
		1149	prio => 1,
		1150	at => $NEXT_TICK \|\| 1,
		1151	cb => sub {
		1152	cf::server_tick; # one server iteration
		1153
		1154	my $NOW = Event::time;
		1155	$NEXT_TICK += $TICK;
		1156
		1157	# if we are delayed by four ticks, skip them all
		1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		1159
		1160	$TICK_WATCHER->at ($NEXT_TICK);
		1161	$TICK_WATCHER->start;
		1162	},
		1163	);
212		1164
213	1	1165	1
214		1166

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.5 by root, Wed Feb 8 03:46:15 2006 UTC vs. Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC

Diff Legend

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.5 by root, Wed Feb 8 03:46:15 2006 UTC vs.
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC