[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 1.70 by root, Sun Oct 1 10:55:37 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	#############################################################################
		115
		116	=head2 EVENTS AND OBJECT ATTACHMENTS
		117
		118	=over 4
		119
		120	=item $object->attach ($attachment, key => $value...)
		121
110	=item $object->attach ($attachment, ...)	122	=item $object->detach ($attachment)
111		123
112	Attach a pre-registered attachment to an object.	124	Attach/detach a pre-registered attachment to an object.
113		125
		126	=item $player->attach ($attachment, key => $value...)
		127
114	=item $player->attach ($attachment, ...)	128	=item $player->detach ($attachment)
115		129
116	Attach a pre-registered attachment to a player.	130	Attach/detach a pre-registered attachment to a player.
117		131
118	=item $map->attach ($attachment, ...) # not yet persistent	132	=item $map->attach ($attachment, key => $value...)
119		133
		134	=item $map->detach ($attachment)
		135
120	Attach a pre-registered attachment to a map.	136	Attach/detach a pre-registered attachment to a map.
		137
		138	=item $bool = $object->attached ($name)
		139
		140	=item $bool = $player->attached ($name)
		141
		142	=item $bool = $map->attached ($name)
		143
		144	Checks wether the named attachment is currently attached to the object.
121		145
122	=item cf::attach_global ...	146	=item cf::attach_global ...
123		147
124	Attach handlers for global events.	148	Attach handlers for global events.
125		149
…		…
173	=item cf::attach_to_maps ...	197	=item cf::attach_to_maps ...
174		198
175	Attach handlers to all maps.	199	Attach handlers to all maps.
176		200
177	=item cf:register_attachment $name, ...	201	=item cf:register_attachment $name, ...
		202
		203	Register an attachment by name through which objects can refer to this
		204	attachment.
		205
		206	=item cf:register_player_attachment $name, ...
		207
		208	Register an attachment by name through which players can refer to this
		209	attachment.
		210
		211	=item cf:register_map_attachment $name, ...
		212
		213	Register an attachment by name through which maps can refer to this
		214	attachment.
178		215
179	=cut	216	=cut
180		217
181	# the following variables are defined in .xs and must not be re-created	218	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	219	our @CB_GLOBAL = (); # registry for all global events
…		…
245		282
246	\%undo	283	\%undo
247	}	284	}
248		285
249	sub _attach_attachment {	286	sub _attach_attachment {
250	my ($obj, $name, @args) = @_;	287	my ($obj, $name, %arg) = @_;
		288
		289	return if exists $obj->{_attachment}{$name};
251		290
252	my $res;	291	my $res;
253		292
254	if (my $attach = $attachment{$name}) {	293	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	294	my $registry = $obj->registry;
…		…
257	for (@$attach) {	296	for (@$attach) {
258	my ($klass, @attach) = @$_;	297	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	298	$res = _attach @$registry, $klass, @attach;
260	}	299	}
261		300
262	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {	301	$obj->{$name} = \%arg;
263	for (@$cb) {
264	eval { $_->[1]->($obj, @args); };
265	if ($@) {
266	warn "$@";
267	warn "... while processing '$name' instantiate with args <@args>.\n";
268	}
269	}
270	}
271	} else {	302	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	303	warn "object uses attachment '$name' that is not available, postponing.\n";
273	}	304	}
274		305
275	push @{$obj->{_attachment}}, $name;	306	$obj->{_attachment}{$name} = undef;
276		307
277	$res->{attachment} = $name;	308	$res->{attachment} = $name;
278	$res	309	$res
279	}	310	}
280		311
281	sub cf::object::attach {	312	*cf::object::attach =
		313	*cf::player::attach =
		314	*cf::map::attach = sub {
282	my ($obj, $name, @args) = @_;	315	my ($obj, $name, %arg) = @_;
283		316
284	_attach_attachment $obj, $name, @args;	317	_attach_attachment $obj, $name, %arg;
285	}	318	};
286		319
		320	# all those should be optimised
		321	*cf::object::detach =
287	sub cf::player::attach {	322	*cf::player::detach =
		323	*cf::map::detach = sub {
288	my ($obj, $name, @args) = @_;	324	my ($obj, $name) = @_;
289		325
290	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	326	delete $obj->{_attachment}{$name};
291	}	327	reattach ($obj);
		328	};
292		329
293	sub cf::map::attach {	330	*cf::object::attached =
		331	*cf::player::attached =
		332	*cf::map::attached = sub {
294	my ($obj, $name, @args) = @_;	333	my ($obj, $name) = @_;
295		334
296	_attach_attachment KLASS_MAP, $obj, $name, @args;	335	exists $obj->{_attachment}{$name}
297	}	336	};
298		337
299	sub attach_global {	338	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	339	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}	340	}
302		341
…		…
323	my $name = shift;	362	my $name = shift;
324		363
325	$attachment{$name} = [[KLASS_OBJECT, @_]];	364	$attachment{$name} = [[KLASS_OBJECT, @_]];
326	}	365	}
327		366
		367	sub register_player_attachment {
		368	my $name = shift;
		369
		370	$attachment{$name} = [[KLASS_PLAYER, @_]];
		371	}
		372
		373	sub register_map_attachment {
		374	my $name = shift;
		375
		376	$attachment{$name} = [[KLASS_MAP, @_]];
		377	}
		378
328	our $override;	379	our $override;
329	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	380	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
330		381
331	sub override {	382	sub override {
332	$override = 1;	383	$override = 1;
…		…
344	for (@$callbacks) {	395	for (@$callbacks) {
345	eval { &{$_->[1]} };	396	eval { &{$_->[1]} };
346		397
347	if ($@) {	398	if ($@) {
348	warn "$@";	399	warn "$@";
349	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	400	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
350	override;	401	override;
351	}	402	}
352		403
353	return 1 if $override;	404	return 1 if $override;
354	}	405	}
355		406
356	0	407	0
357	}	408	}
		409
		410	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		411
		412	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		413
		414	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		415
		416	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		417
		418	Generate a global/object/player/map-specific event with the given arguments.
		419
		420	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		421	removed in future versions), and there is no public API to access override
		422	results (if you must, access C<@cf::invoke_results> directly).
		423
		424	=back
		425
		426	#############################################################################
		427
		428	=head2 METHODS VALID FOR ALL CORE OBJECTS
		429
		430	=over 4
		431
		432	=item $object->valid, $player->valid, $map->valid
		433
		434	Just because you have a perl object does not mean that the corresponding
		435	C-level object still exists. If you try to access an object that has no
		436	valid C counterpart anymore you get an exception at runtime. This method
		437	can be used to test for existence of the C object part without causing an
		438	exception.
		439
		440	=back
		441
		442	=cut
		443
		444	*cf::object::valid =
		445	*cf::player::valid =
		446	*cf::map::valid = \&cf::_valid;
358		447
359	#############################################################################	448	#############################################################################
360	# object support	449	# object support
361		450
362	sub instantiate {	451	sub instantiate {
…		…
364		453
365	$data = from_json $data;	454	$data = from_json $data;
366		455
367	for (@$data) {	456	for (@$data) {
368	my ($name, $args) = @$_;	457	my ($name, $args) = @$_;
369	attach $obj, $name, @{$args \|\| [] };	458
		459	$obj->attach ($name, %{$args \|\| {} });
370	}	460	}
371	}	461	}
372		462
373	# basically do the same as instantiate, without calling instantiate	463	# basically do the same as instantiate, without calling instantiate
374	sub reattach {	464	sub reattach {
375	my ($obj) = @_;	465	my ($obj) = @_;
376	my $registry = $obj->registry;	466	my $registry = $obj->registry;
377		467
378	@$registry = ();	468	@$registry = ();
379		469
		470	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		471
380	for my $name (@{ $obj->{_attachment} }) {	472	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
381	if (my $attach = $attachment{$name}) {	473	if (my $attach = $attachment{$name}) {
382	for (@$attach) {	474	for (@$attach) {
383	my ($klass, @attach) = @$_;	475	my ($klass, @attach) = @$_;
384	_attach @$registry, $klass, @attach;	476	_attach @$registry, $klass, @attach;
385	}	477	}
…		…
388	}	480	}
389	}	481	}
390	}	482	}
391		483
392	sub object_freezer_save {	484	sub object_freezer_save {
393	my ($filename, $objs) = @_;	485	my ($filename, $rdata, $objs) = @_;
394		486
395	$filename .= ".pst";	487	if (length $$rdata) {
		488	warn sprintf "saving %s (%d,%d)\n",
		489	$filename, length $$rdata, scalar @$objs;
396		490
397	if (@$objs) {
398	open my $fh, ">:raw", "$filename~";	491	if (open my $fh, ">:raw", "$filename~") {
399	chmod $fh, SAVE_MODE;	492	chmod SAVE_MODE, $fh;
		493	syswrite $fh, $$rdata;
		494	close $fh;
		495
		496	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		497	chmod SAVE_MODE, $fh;
400	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	498	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
401	close $fh;	499	close $fh;
		500	rename "$filename.pst~", "$filename.pst";
		501	} else {
		502	unlink "$filename.pst";
		503	}
		504
402	rename "$filename~", $filename;	505	rename "$filename~", $filename;
		506	} else {
		507	warn "FATAL: $filename~: $!\n";
		508	}
403	} else {	509	} else {
404	unlink $filename;	510	unlink $filename;
		511	unlink "$filename.pst";
405	}	512	}
406	}	513	}
407		514
408	sub object_thawer_load {	515	sub object_thawer_load {
409	my ($filename) = @_;	516	my ($filename) = @_;
410		517
		518	local $/;
		519
		520	my $av;
		521
		522	#TODO: use sysread etc.
		523	if (open my $data, "<:raw:perlio", $filename) {
		524	$data = <$data>;
411	open my $fh, "<:raw:perlio", "$filename.pst"	525	if (open my $pst, "<:raw:perlio", "$filename.pst") {
412	or return;	526	$av = eval { (Storable::thaw <$pst>)->{objs} };
		527	}
		528	return ($data, $av);
		529	}
413		530
414	eval { local $/; (Storable::thaw <$fh>)->{objs} }	531	()
415	}	532	}
416		533
417	attach_to_objects	534	attach_to_objects
418	prio => -1000000,	535	prio => -1000000,
419	on_clone => sub {	536	on_clone => sub {
…		…
421		538
422	@{$dst->registry} = @{$src->registry};	539	@{$dst->registry} = @{$src->registry};
423		540
424	%$dst = %$src;	541	%$dst = %$src;
425		542
426	$dst->{_attachment} = [@{ $src->{_attachment} }]	543	%{$dst->{_attachment}} = %{$src->{_attachment}}
427	if exists $src->{_attachment};	544	if exists $src->{_attachment};
428	},	545	},
429	;	546	;
430		547
431	#############################################################################	548	#############################################################################
…		…
565	load_extension $ext;	682	load_extension $ext;
566	1	683	1
567	} or warn "$ext not loaded: $@";	684	} or warn "$ext not loaded: $@";
568	}	685	}
569	}	686	}
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		687
644	#############################################################################	688	#############################################################################
645	# extcmd framework, basically convert ext <msg>	689	# extcmd framework, basically convert ext <msg>
646	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few	690	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
647		691
…		…
672	my ($map) = @_;	716	my ($map) = @_;
673		717
674	my $path = $map->tmpname;	718	my $path = $map->tmpname;
675	defined $path or return;	719	defined $path or return;
676		720
677	unlink "$path.cfperl";
678	unlink "$path.pst";	721	unlink "$path.pst";
679	};	722	};
680		723
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::;	724	attach_to_maps prio => -10000, package => cf::mapsupport::;
700		725
701	#############################################################################	726	#############################################################################
702	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
703		728
704	sub all_objects(@) {	729	sub all_objects(@) {
705	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
706	}	731	}
707		732
		733	# TODO: compatibility cruft, remove when no longer needed
708	attach_to_players	734	attach_to_players
709	on_load => sub {	735	on_load => sub {
710	my ($pl, $path) = @_;	736	my ($pl, $path) = @_;
711		737
712	for my $o (all_objects $pl->ob) {	738	for my $o (all_objects $pl->ob) {
…		…
718	}	744	}
719	},	745	},
720	;	746	;
721		747
722	#############################################################################	748	#############################################################################
723	# core extensions - in perl	749
		750	=head2 CORE EXTENSIONS
		751
		752	Functions and methods that extend core crossfire objects.
		753
		754	=over 4
724		755
725	=item cf::player::exists $login	756	=item cf::player::exists $login
726		757
727	Returns true when the given account exists.	758	Returns true when the given account exists.
728		759
…		…
768	$msg{msgid} = $id;	799	$msg{msgid} = $id;
769		800
770	$self->send ("ext " . to_json \%msg);	801	$self->send ("ext " . to_json \%msg);
771	}	802	}
772		803
		804	=back
		805
		806	=cut
		807
773	#############################################################################	808	#############################################################################
774	# map scripting support	809
		810	=head2 SAFE SCRIPTING
		811
		812	Functions that provide a safe environment to compile and execute
		813	snippets of perl code without them endangering the safety of the server
		814	itself. Looping constructs, I/O operators and other built-in functionality
		815	is not available in the safe scripting environment, and the number of
		816	functions and methods that cna be called is greatly reduced.
		817
		818	=cut
775		819
776	our $safe = new Safe "safe";	820	our $safe = new Safe "safe";
777	our $safe_hole = new Safe::Hole;	821	our $safe_hole = new Safe::Hole;
778		822
779	$SIG{FPE} = 'IGNORE';	823	$SIG{FPE} = 'IGNORE';
780		824
781	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	825	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
782		826
783	# here we export the classes and methods available to script code	827	# here we export the classes and methods available to script code
		828
		829	=pod
		830
		831	The following fucntions and emthods are available within a safe environment:
		832
		833	cf::object contr pay_amount pay_player
		834	cf::object::player player
		835	cf::player peaceful
		836
		837	=cut
784		838
785	for (	839	for (
786	["cf::object" => qw(contr pay_amount pay_player)],	840	["cf::object" => qw(contr pay_amount pay_player)],
787	["cf::object::player" => qw(player)],	841	["cf::object::player" => qw(player)],
788	["cf::player" => qw(peaceful)],	842	["cf::player" => qw(peaceful)],
…		…
791	my ($pkg, @funs) = @$_;	845	my ($pkg, @funs) = @$_;
792	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	846	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
793	for @funs;	847	for @funs;
794	}	848	}
795		849
		850	=over 4
		851
		852	=item @retval = safe_eval $code, [var => value, ...]
		853
		854	Compiled and executes the given perl code snippet. additional var/value
		855	pairs result in temporary local (my) scalar variables of the given name
		856	that are available in the code snippet. Example:
		857
		858	my $five = safe_eval '$first + $second', first => 1, second => 4;
		859
		860	=cut
		861
796	sub safe_eval($;@) {	862	sub safe_eval($;@) {
797	my ($code, %vars) = @_;	863	my ($code, %vars) = @_;
798		864
799	my $qcode = $code;	865	my $qcode = $code;
800	$qcode =~ s/"/‟/g; # not allowed in #line filenames	866	$qcode =~ s/"/‟/g; # not allowed in #line filenames
…		…
822	}	888	}
823		889
824	wantarray ? @res : $res[0]	890	wantarray ? @res : $res[0]
825	}	891	}
826		892
		893	=item cf::register_script_function $function => $cb
		894
		895	Register a function that can be called from within map/npc scripts. The
		896	function should be reasonably secure and should be put into a package name
		897	like the extension.
		898
		899	Example: register a function that gets called whenever a map script calls
		900	C<rent::overview>, as used by the C<rent> extension.
		901
		902	cf::register_script_function "rent::overview" => sub {
		903	...
		904	};
		905
		906	=cut
		907
827	sub register_script_function {	908	sub register_script_function {
828	my ($fun, $cb) = @_;	909	my ($fun, $cb) = @_;
829		910
830	no strict 'refs';	911	no strict 'refs';
831	*{"safe::$fun"} = $safe_hole->wrap ($cb);	912	*{"safe::$fun"} = $safe_hole->wrap ($cb);
832	}	913	}
833		914
		915	=back
		916
		917	#############################################################################
		918
		919	=head2 EXTENSION DATABASE SUPPORT
		920
		921	Crossfire maintains a very simple database for extension use. It can
		922	currently store anything that can be serialised using Storable, which
		923	excludes objects.
		924
		925	The parameter C<$family> should best start with the name of the extension
		926	using it, it should be unique.
		927
		928	=over 4
		929
		930	=item $hashref = cf::db_get $family
		931
		932	Return a hashref for use by the extension C<$family>, which can be
		933	modified. After modifications, you have to call C<cf::db_dirty> or
		934	C<cf::db_sync>.
		935
		936	=item $value = cf::db_get $family => $key
		937
		938	Returns a single value from the database
		939
		940	=item cf::db_put $family => $hashref
		941
		942	Stores the given family hashref into the database. Updates are delayed, if
		943	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		944
		945	=item cf::db_put $family => $key => $value
		946
		947	Stores the given C<$value> in the family hash. Updates are delayed, if you
		948	want the data to be synced to disk immediately, use C<cf::db_sync>.
		949
		950	=item cf::db_dirty
		951
		952	Marks the database as dirty, to be updated at a later time.
		953
		954	=item cf::db_sync
		955
		956	Immediately write the database to disk I<if it is dirty>.
		957
		958	=cut
		959
		960	{
		961	my $db;
		962	my $path = cf::localdir . "/database.pst";
		963
		964	sub db_load() {
		965	warn "loading database $path\n";#d# remove later
		966	$db = stat $path ? Storable::retrieve $path : { };
		967	}
		968
		969	my $pid;
		970
		971	sub db_save() {
		972	warn "saving database $path\n";#d# remove later
		973	waitpid $pid, 0 if $pid;
		974	if (0 == ($pid = fork)) {
		975	$db->{_meta}{version} = 1;
		976	Storable::nstore $db, "$path~";
		977	rename "$path~", $path;
		978	cf::_exit 0 if defined $pid;
		979	}
		980	}
		981
		982	my $dirty;
		983
		984	sub db_sync() {
		985	db_save if $dirty;
		986	undef $dirty;
		987	}
		988
		989	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
		990	db_sync;
		991	});
		992
		993	sub db_dirty() {
		994	$dirty = 1;
		995	$idle->start;
		996	}
		997
		998	sub db_get($;$) {
		999	@_ >= 2
		1000	? $db->{$_[0]}{$_[1]}
		1001	: ($db->{$_[0]} \|\|= { })
		1002	}
		1003
		1004	sub db_put($$;$) {
		1005	if (@_ >= 3) {
		1006	$db->{$_[0]}{$_[1]} = $_[2];
		1007	} else {
		1008	$db->{$_[0]} = $_[1];
		1009	}
		1010	db_dirty;
		1011	}
		1012
		1013	attach_global
		1014	prio => 10000,
		1015	on_cleanup => sub {
		1016	db_sync;
		1017	},
		1018	;
		1019	}
		1020
834	#############################################################################	1021	#############################################################################
835	# the server's main()	1022	# the server's main()
836		1023
837	sub main {	1024	sub main {
		1025	db_load;
		1026	load_extensions;
838	Event::loop;	1027	Event::loop;
839	}	1028	}
840		1029
841	#############################################################################	1030	#############################################################################
842	# initialisation	1031	# initialisation
843		1032
		1033	sub _perl_reload(&) {
		1034	my ($msg) = @_;
		1035
		1036	$msg->("reloading...");
		1037
		1038	eval {
		1039	# cancel all watchers
		1040	$_->cancel for Event::all_watchers;
		1041
		1042	# unload all extensions
		1043	for (@exts) {
		1044	$msg->("unloading <$_>");
		1045	unload_extension $_;
		1046	}
		1047
		1048	# unload all modules loaded from $LIBDIR
		1049	while (my ($k, $v) = each %INC) {
		1050	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1051
		1052	$msg->("removing <$k>");
		1053	delete $INC{$k};
		1054
		1055	$k =~ s/\.pm$//;
		1056	$k =~ s/\//::/g;
		1057
		1058	if (my $cb = $k->can ("unload_module")) {
		1059	$cb->();
		1060	}
		1061
		1062	Symbol::delete_package $k;
		1063	}
		1064
		1065	# sync database to disk
		1066	cf::db_sync;
		1067
		1068	# get rid of safe::, as good as possible
		1069	Symbol::delete_package "safe::$_"
		1070	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1071
		1072	# remove register_script_function callbacks
		1073	# TODO
		1074
		1075	# unload cf.pm "a bit"
		1076	delete $INC{"cf.pm"};
		1077
		1078	# don't, removes xs symbols, too,
		1079	# and global variables created in xs
		1080	#Symbol::delete_package __PACKAGE__;
		1081
		1082	# reload cf.pm
		1083	$msg->("reloading cf.pm");
		1084	require cf;
		1085
		1086	# load database again
		1087	cf::db_load;
		1088
		1089	# load extensions
		1090	$msg->("load extensions");
		1091	cf::load_extensions;
		1092
		1093	# reattach attachments to objects
		1094	$msg->("reattach");
		1095	_global_reattach;
		1096	};
		1097	$msg->($@) if $@;
		1098
		1099	$msg->("reloaded");
		1100	};
		1101
		1102	sub perl_reload() {
		1103	_perl_reload {
		1104	warn $_[0];
		1105	print "$_[0]\n";
		1106	};
		1107	}
		1108
		1109	register_command "perl-reload", 0, sub {
		1110	my ($who, $arg) = @_;
		1111
		1112	if ($who->flag (FLAG_WIZ)) {
		1113	_perl_reload {
		1114	warn $_[0];
		1115	$who->message ($_[0]);
		1116	};
		1117	}
		1118	};
		1119
844	register "<global>", __PACKAGE__;	1120	register "<global>", __PACKAGE__;
845		1121
846	unshift @INC, $LIBDIR;	1122	unshift @INC, $LIBDIR;
847
848	load_extensions;
849		1123
850	$TICK_WATCHER = Event->timer (	1124	$TICK_WATCHER = Event->timer (
851	prio => 1,	1125	prio => 1,
852	at => $NEXT_TICK \|\| 1,	1126	at => $NEXT_TICK \|\| 1,
853	cb => sub {	1127	cb => sub {
…		…
862	$TICK_WATCHER->at ($NEXT_TICK);	1136	$TICK_WATCHER->at ($NEXT_TICK);
863	$TICK_WATCHER->start;	1137	$TICK_WATCHER->start;
864	},	1138	},
865	);	1139	);
866		1140
867	_reload_2;
868
869	1	1141	1
870		1142

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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 1.70 by root, Sun Oct 1 10:55:37 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 1.70 by root, Sun Oct 1 10:55:37 2006 UTC