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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.47 by root, Sun Aug 27 13:02:04 2006 UTC vs.
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC

…		…
11	use Event;	11	use Event;
12	$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
13		13
14	use strict;	14	use strict;
15		15
16	_reload_1;	16	_init_vars;
17		17
18	our %COMMAND = ();	18	our %COMMAND = ();
19	our @EVENT;	19	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";	20	our $LIBDIR = maps_directory "perl";
23		21
24	our $TICK = MAX_TIME * 1e-6;	22	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	23	our $TICK_WATCHER;
26	our $NEXT_TICK;	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
27		51
28	BEGIN {	52	BEGIN {
29	*CORE::GLOBAL::warn = sub {	53	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	54	my $msg = join "", @_;
31	$msg .= "\n"	55	$msg .= "\n"
…		…
34	print STDERR "cfperl: $msg";	58	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	59	LOG llevError, "cfperl: $msg";
36	};	60	};
37	}	61	}
38		62
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
40
41	# generate property mutators
42	sub prop_gen {
43	my ($prefix, $class) = @_;
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		64
75	# we bless all objects into (empty) derived classes to force a method lookup	65	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	66	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {
78	no strict 'refs';	68	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	70	}
81		71
82	$Event::DIED = sub {	72	$Event::DIED = sub {
…		…
87	my @exts;	77	my @exts;
88	my @hook;	78	my @hook;
89	my %command;	79	my %command;
90	my %extcmd;	80	my %extcmd;
91		81
92	#############################################################################	82	=head2 UTILITY FUNCTIONS
93	# utility functions	83
		84	=over 4
		85
		86	=cut
94		87
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	88	use JSON::Syck (); # TODO# replace by JSON::PC once working
		89
		90	=item $ref = cf::from_json $json
		91
		92	Converts a JSON string into the corresponding perl data structure.
		93
		94	=cut
96		95
97	sub from_json($) {	96	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	97	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	98	JSON::Syck::Load $_[0]
100	}	99	}
101		100
		101	=item $json = cf::to_json $ref
		102
		103	Converts a perl data structure into its JSON representation.
		104
		105	=cut
		106
102	sub to_json($) {	107	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	109	JSON::Syck::Dump $_[0]
105	}	110	}
106		111
107	#############################################################################	112	=back
108	# "new" plug-in system
109		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
110	=item $object->attach ($attachment, ...)	124	=item $object->detach ($attachment)
111		125
112	Attach a pre-registered attachment to an object.	126	Attach/detach a pre-registered attachment to an object.
113		127
		128	=item $player->attach ($attachment, key => $value...)
		129
114	=item $player->attach ($attachment, ...)	130	=item $player->detach ($attachment)
115		131
116	Attach a pre-registered attachment to a player.	132	Attach/detach a pre-registered attachment to a player.
117		133
118	=item $map->attach ($attachment, ...) # not yet persistent	134	=item $map->attach ($attachment, key => $value...)
119		135
		136	=item $map->detach ($attachment)
		137
120	Attach a pre-registered attachment to a map.	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.
121		147
122	=item cf::attach_global ...	148	=item cf::attach_global ...
123		149
124	Attach handlers for global events.	150	Attach handlers for global events.
125		151
…		…
173	=item cf::attach_to_maps ...	199	=item cf::attach_to_maps ...
174		200
175	Attach handlers to all maps.	201	Attach handlers to all maps.
176		202
177	=item cf:register_attachment $name, ...	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 $name, ...
		214
		215	Register an attachment by name through which maps can refer to this
		216	attachment.
178		217
179	=cut	218	=cut
180		219
181	# the following variables are defined in .xs and must not be re-created	220	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	221	our @CB_GLOBAL = (); # registry for all global events
…		…
245		284
246	\%undo	285	\%undo
247	}	286	}
248		287
249	sub _attach_attachment {	288	sub _attach_attachment {
250	my ($obj, $name, @args) = @_;	289	my ($obj, $name, %arg) = @_;
		290
		291	return if exists $obj->{_attachment}{$name};
251		292
252	my $res;	293	my $res;
253		294
254	if (my $attach = $attachment{$name}) {	295	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	296	my $registry = $obj->registry;
…		…
257	for (@$attach) {	298	for (@$attach) {
258	my ($klass, @attach) = @$_;	299	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	300	$res = _attach @$registry, $klass, @attach;
260	}	301	}
261		302
262	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {	303	$obj->{$name} = \%arg;
263	for (@$cb) {
264	eval { $_->[1]->($obj, @args); };
265	if ($@) {
266	warn "$@";
267	warn "... while processing '$name' instantiate with args <@args>.\n";
268	}
269	}
270	}
271	} else {	304	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	305	warn "object uses attachment '$name' that is not available, postponing.\n";
273	}	306	}
274		307
275	push @{$obj->{_attachment}}, $name;	308	$obj->{_attachment}{$name} = undef;
276		309
277	$res->{attachment} = $name;	310	$res->{attachment} = $name;
278	$res	311	$res
279	}	312	}
280		313
281	sub cf::object::attach {	314	*cf::object::attach =
		315	*cf::player::attach =
		316	*cf::map::attach = sub {
282	my ($obj, $name, @args) = @_;	317	my ($obj, $name, %arg) = @_;
283		318
284	_attach_attachment $obj, $name, @args;	319	_attach_attachment $obj, $name, %arg;
285	}	320	};
286		321
		322	# all those should be optimised
		323	*cf::object::detach =
287	sub cf::player::attach {	324	*cf::player::detach =
		325	*cf::map::detach = sub {
288	my ($obj, $name, @args) = @_;	326	my ($obj, $name) = @_;
289		327
290	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	328	delete $obj->{_attachment}{$name};
291	}	329	reattach ($obj);
		330	};
292		331
293	sub cf::map::attach {	332	*cf::object::attached =
		333	*cf::player::attached =
		334	*cf::map::attached = sub {
294	my ($obj, $name, @args) = @_;	335	my ($obj, $name) = @_;
295		336
296	_attach_attachment KLASS_MAP, $obj, $name, @args;	337	exists $obj->{_attachment}{$name}
297	}	338	};
298		339
299	sub attach_global {	340	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	341	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}	342	}
302		343
…		…
323	my $name = shift;	364	my $name = shift;
324		365
325	$attachment{$name} = [[KLASS_OBJECT, @_]];	366	$attachment{$name} = [[KLASS_OBJECT, @_]];
326	}	367	}
327		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
328	our $override;	381	our $override;
329	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	382	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
330		383
331	sub override {	384	sub override {
332	$override = 1;	385	$override = 1;
…		…
344	for (@$callbacks) {	397	for (@$callbacks) {
345	eval { &{$_->[1]} };	398	eval { &{$_->[1]} };
346		399
347	if ($@) {	400	if ($@) {
348	warn "$@";	401	warn "$@";
349	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	402	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
350	override;	403	override;
351	}	404	}
352		405
353	return 1 if $override;	406	return 1 if $override;
354	}	407	}
355		408
356	0	409	0
357	}	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;
358		451
359	#############################################################################	452	#############################################################################
360	# object support	453	# object support
361		454
362	sub instantiate {	455	sub instantiate {
…		…
364		457
365	$data = from_json $data;	458	$data = from_json $data;
366		459
367	for (@$data) {	460	for (@$data) {
368	my ($name, $args) = @$_;	461	my ($name, $args) = @$_;
369	attach $obj, $name, @{$args \|\| [] };	462
		463	$obj->attach ($name, %{$args \|\| {} });
370	}	464	}
371	}	465	}
372		466
373	# basically do the same as instantiate, without calling instantiate	467	# basically do the same as instantiate, without calling instantiate
374	sub reattach {	468	sub reattach {
375	my ($obj) = @_;	469	my ($obj) = @_;
376	my $registry = $obj->registry;	470	my $registry = $obj->registry;
377		471
378	@$registry = ();	472	@$registry = ();
379		473
		474	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		475
380	for my $name (@{ $obj->{_attachment} }) {	476	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
381	if (my $attach = $attachment{$name}) {	477	if (my $attach = $attachment{$name}) {
382	for (@$attach) {	478	for (@$attach) {
383	my ($klass, @attach) = @$_;	479	my ($klass, @attach) = @$_;
384	_attach @$registry, $klass, @attach;	480	_attach @$registry, $klass, @attach;
385	}	481	}
…		…
388	}	484	}
389	}	485	}
390	}	486	}
391		487
392	sub object_freezer_save {	488	sub object_freezer_save {
393	my ($filename, $objs) = @_;	489	my ($filename, $rdata, $objs) = @_;
394		490
395	$filename .= ".pst";	491	if (length $$rdata) {
		492	warn sprintf "saving %s (%d,%d)\n",
		493	$filename, length $$rdata, scalar @$objs;
396		494
397	if (@$objs) {
398	open my $fh, ">:raw", "$filename~";	495	if (open my $fh, ">:raw", "$filename~") {
399	chmod $fh, SAVE_MODE;	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;
400	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	502	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
401	close $fh;	503	close $fh;
		504	rename "$filename.pst~", "$filename.pst";
		505	} else {
		506	unlink "$filename.pst";
		507	}
		508
402	rename "$filename~", $filename;	509	rename "$filename~", $filename;
		510	} else {
		511	warn "FATAL: $filename~: $!\n";
		512	}
403	} else {	513	} else {
404	unlink $filename;	514	unlink $filename;
		515	unlink "$filename.pst";
405	}	516	}
406	}	517	}
407		518
408	sub object_thawer_load {	519	sub object_thawer_load {
409	my ($filename) = @_;	520	my ($filename) = @_;
410		521
		522	local $/;
		523
		524	my $av;
		525
		526	#TODO: use sysread etc.
		527	if (open my $data, "<:raw:perlio", $filename) {
		528	$data = <$data>;
411	open my $fh, "<:raw:perlio", "$filename.pst"	529	if (open my $pst, "<:raw:perlio", "$filename.pst") {
412	or return;	530	$av = eval { (Storable::thaw <$pst>)->{objs} };
		531	}
		532	return ($data, $av);
		533	}
413		534
414	eval { local $/; (Storable::thaw <$fh>)->{objs} }	535	()
415	}	536	}
416		537
417	attach_to_objects	538	attach_to_objects
418	prio => -1000000,	539	prio => -1000000,
419	on_clone => sub {	540	on_clone => sub {
…		…
421		542
422	@{$dst->registry} = @{$src->registry};	543	@{$dst->registry} = @{$src->registry};
423		544
424	%$dst = %$src;	545	%$dst = %$src;
425		546
426	$dst->{_attachment} = [@{ $src->{_attachment} }]	547	%{$dst->{_attachment}} = %{$src->{_attachment}}
427	if exists $src->{_attachment};	548	if exists $src->{_attachment};
428	},	549	},
429	;	550	;
430		551
431	#############################################################################	552	#############################################################################
…		…
565	load_extension $ext;	686	load_extension $ext;
566	1	687	1
567	} or warn "$ext not loaded: $@";	688	} or warn "$ext not loaded: $@";
568	}	689	}
569	}	690	}
570
571	sub _perl_reload(&) {
572	my ($msg) = @_;
573
574	$msg->("reloading...");
575
576	eval {
577	# 1. cancel all watchers
578	$_->cancel for Event::all_watchers;
579
580	# 2. unload all extensions
581	for (@exts) {
582	$msg->("unloading <$_>");
583	unload_extension $_;
584	}
585
586	# 3. unload all modules loaded from $LIBDIR
587	while (my ($k, $v) = each %INC) {
588	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
589
590	$msg->("removing <$k>");
591	delete $INC{$k};
592
593	$k =~ s/\.pm$//;
594	$k =~ s/\//::/g;
595
596	if (my $cb = $k->can ("unload_module")) {
597	$cb->();
598	}
599
600	Symbol::delete_package $k;
601	}
602
603	# 4. get rid of safe::, as good as possible
604	Symbol::delete_package "safe::$_"
605	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
606
607	# 5. remove register_script_function callbacks
608	# TODO
609
610	# 6. unload cf.pm "a bit"
611	delete $INC{"cf.pm"};
612
613	# don't, removes xs symbols, too,
614	# and global variables created in xs
615	#Symbol::delete_package __PACKAGE__;
616
617	# 7. reload cf.pm
618	$msg->("reloading cf.pm");
619	require cf;
620	};
621	$msg->($@) if $@;
622
623	$msg->("reloaded");
624	};
625
626	sub perl_reload() {
627	_perl_reload {
628	warn $_[0];
629	print "$_[0]\n";
630	};
631	}
632
633	register_command "perl-reload", 0, sub {
634	my ($who, $arg) = @_;
635
636	if ($who->flag (FLAG_WIZ)) {
637	_perl_reload {
638	warn $_[0];
639	$who->message ($_[0]);
640	};
641	}
642	};
643		691
644	#############################################################################	692	#############################################################################
645	# extcmd framework, basically convert ext <msg>	693	# extcmd framework, basically convert ext <msg>
646	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few	694	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
647		695
…		…
672	my ($map) = @_;	720	my ($map) = @_;
673		721
674	my $path = $map->tmpname;	722	my $path = $map->tmpname;
675	defined $path or return;	723	defined $path or return;
676		724
677	unlink "$path.cfperl";
678	unlink "$path.pst";	725	unlink "$path.pst";
679	};	726	};
680		727
681	*cf::mapsupport::on_swapin =
682	*cf::mapsupport::on_load = sub {
683	my ($map) = @_;
684
685	my $path = $map->tmpname;
686	$path = $map->path unless defined $path;
687
688	open my $fh, "<:raw", "$path.cfperl"
689	or return; # no perl data
690
691	my $data = Storable::thaw do { local $/; <$fh> };
692
693	$data->{version} <= 1
694	or return; # too new
695
696	$map->_set_obs ($data->{obs});
697	};
698
699	attach_to_maps prio => -10000, package => cf::mapsupport::;	728	attach_to_maps prio => -10000, package => cf::mapsupport::;
700		729
701	#############################################################################	730	#############################################################################
702	# load/save perl data associated with player->ob objects	731	# load/save perl data associated with player->ob objects
703		732
704	sub all_objects(@) {	733	sub all_objects(@) {
705	@_, map all_objects ($_->inv), @_	734	@_, map all_objects ($_->inv), @_
706	}	735	}
707		736
		737	# TODO: compatibility cruft, remove when no longer needed
708	attach_to_players	738	attach_to_players
709	on_load => sub {	739	on_load => sub {
710	my ($pl, $path) = @_;	740	my ($pl, $path) = @_;
711		741
712	for my $o (all_objects $pl->ob) {	742	for my $o (all_objects $pl->ob) {
…		…
718	}	748	}
719	},	749	},
720	;	750	;
721		751
722	#############################################################################	752	#############################################################################
723	# core extensions - in perl	753
		754	=head2 CORE EXTENSIONS
		755
		756	Functions and methods that extend core crossfire objects.
		757
		758	=over 4
724		759
725	=item cf::player::exists $login	760	=item cf::player::exists $login
726		761
727	Returns true when the given account exists.	762	Returns true when the given account exists.
728		763
…		…
768	$msg{msgid} = $id;	803	$msg{msgid} = $id;
769		804
770	$self->send ("ext " . to_json \%msg);	805	$self->send ("ext " . to_json \%msg);
771	}	806	}
772		807
		808	=back
		809
		810	=cut
		811
773	#############################################################################	812	#############################################################################
774	# map scripting support	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
775		823
776	our $safe = new Safe "safe";	824	our $safe = new Safe "safe";
777	our $safe_hole = new Safe::Hole;	825	our $safe_hole = new Safe::Hole;
778		826
779	$SIG{FPE} = 'IGNORE';	827	$SIG{FPE} = 'IGNORE';
780		828
781	$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));
782		830
783	# 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
784		842
785	for (	843	for (
786	["cf::object" => qw(contr pay_amount pay_player)],	844	["cf::object" => qw(contr pay_amount pay_player)],
787	["cf::object::player" => qw(player)],	845	["cf::object::player" => qw(player)],
788	["cf::player" => qw(peaceful)],	846	["cf::player" => qw(peaceful)],
…		…
791	my ($pkg, @funs) = @$_;	849	my ($pkg, @funs) = @$_;
792	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	850	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
793	for @funs;	851	for @funs;
794	}	852	}
795		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
		865
796	sub safe_eval($;@) {	866	sub safe_eval($;@) {
797	my ($code, %vars) = @_;	867	my ($code, %vars) = @_;
798		868
799	my $qcode = $code;	869	my $qcode = $code;
800	$qcode =~ s/"/‟/g; # not allowed in #line filenames	870	$qcode =~ s/"/‟/g; # not allowed in #line filenames
…		…
822	}	892	}
823		893
824	wantarray ? @res : $res[0]	894	wantarray ? @res : $res[0]
825	}	895	}
826		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
		911
827	sub register_script_function {	912	sub register_script_function {
828	my ($fun, $cb) = @_;	913	my ($fun, $cb) = @_;
829		914
830	no strict 'refs';	915	no strict 'refs';
831	*{"safe::$fun"} = $safe_hole->wrap ($cb);	916	*{"safe::$fun"} = $safe_hole->wrap ($cb);
832	}	917	}
833		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]} = $_[1];
		1015	}
		1016	db_dirty;
		1017	}
		1018
		1019	attach_global
		1020	prio => 10000,
		1021	on_cleanup => sub {
		1022	db_sync;
		1023	},
		1024	;
		1025	}
		1026
834	#############################################################################	1027	#############################################################################
835	# the server's main()	1028	# the server's main()
836		1029
837	sub main {	1030	sub main {
		1031	db_load;
		1032	load_extensions;
838	Event::loop;	1033	Event::loop;
839	}	1034	}
840		1035
841	#############################################################################	1036	#############################################################################
842	# initialisation	1037	# initialisation
843		1038
		1039	sub _perl_reload(&) {
		1040	my ($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
844	register "<global>", __PACKAGE__;	1126	register "<global>", __PACKAGE__;
845		1127
846	unshift @INC, $LIBDIR;	1128	unshift @INC, $LIBDIR;
847
848	load_extensions;
849		1129
850	$TICK_WATCHER = Event->timer (	1130	$TICK_WATCHER = Event->timer (
851	prio => 1,	1131	prio => 1,
852	at => $NEXT_TICK \|\| 1,	1132	at => $NEXT_TICK \|\| 1,
853	cb => sub {	1133	cb => sub {
…		…
862	$TICK_WATCHER->at ($NEXT_TICK);	1142	$TICK_WATCHER->at ($NEXT_TICK);
863	$TICK_WATCHER->start;	1143	$TICK_WATCHER->start;
864	},	1144	},
865	);	1145	);
866		1146
867	_reload_2;
868
869	1	1147	1
870		1148

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.47 by root, Sun Aug 27 13:02:04 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 1.47 by root, Sun Aug 27 13:02:04 2006 UTC vs.
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC