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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.84 by root, Mon Dec 11 02:54:57 2006 UTC

…		…
5	use Storable;	5	use Storable;
6	use Opcode;	6	use Opcode;
7	use Safe;	7	use Safe;
8	use Safe::Hole;	8	use Safe::Hole;
9		9
		10	use IO::AIO ();
		11	use YAML::Syck ();
10	use Time::HiRes;	12	use Time::HiRes;
11	use Event;	13	use Event;
12	$Event::Eval = 1; # no idea why this is required, but it is	14	$Event::Eval = 1; # no idea why this is required, but it is
13		15
		16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		17	$YAML::Syck::ImplicitUnicode = 1;
		18
14	use strict;	19	use strict;
15		20
16	_reload_1;	21	_init_vars;
17		22
18	our %COMMAND = ();	23	our %COMMAND = ();
19	our @EVENT;	24	our @EVENT;
20	our %PROP_TYPE;
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";	25	our $LIBDIR = maps_directory "perl";
23		26
24	our $TICK = MAX_TIME * 1e-6;	27	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	28	our $TICK_WATCHER;
26	our $NEXT_TICK;	29	our $NEXT_TICK;
		30
		31	our %CFG;
		32
		33	our $UPTIME; $UPTIME \|\|= time;
		34
		35	#############################################################################
		36
		37	=head2 GLOBAL VARIABLES
		38
		39	=over 4
		40
		41	=item $cf::UPTIME
		42
		43	The timestamp of the server start (so not actually an uptime).
		44
		45	=item $cf::LIBDIR
		46
		47	The perl library directory, where extensions and cf-specific modules can
		48	be found. It will be added to C<@INC> automatically.
		49
		50	=item $cf::TICK
		51
		52	The interval between server ticks, in seconds.
		53
		54	=item %cf::CFG
		55
		56	Configuration for the server, loaded from C</etc/crossfire/config>, or
		57	from wherever your confdir points to.
		58
		59	=back
		60
		61	=cut
27		62
28	BEGIN {	63	BEGIN {
29	*CORE::GLOBAL::warn = sub {	64	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	65	my $msg = join "", @_;
31	$msg .= "\n"	66	$msg .= "\n"
…		…
34	print STDERR "cfperl: $msg";	69	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	70	LOG llevError, "cfperl: $msg";
36	};	71	};
37	}	72	}
38		73
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
40
41	# generate property mutators
42	sub prop_gen {
43	my ($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';	74	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		75
75	# we bless all objects into (empty) derived classes to force a method lookup	76	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	77	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	78	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {
…		…
87	my @exts;	88	my @exts;
88	my @hook;	89	my @hook;
89	my %command;	90	my %command;
90	my %extcmd;	91	my %extcmd;
91		92
92	#############################################################################	93	=head2 UTILITY FUNCTIONS
93	# utility functions	94
		95	=over 4
		96
		97	=cut
94		98
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	99	use JSON::Syck (); # TODO# replace by JSON::PC once working
		100
		101	=item $ref = cf::from_json $json
		102
		103	Converts a JSON string into the corresponding perl data structure.
		104
		105	=cut
96		106
97	sub from_json($) {	107	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	108	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	109	JSON::Syck::Load $_[0]
100	}	110	}
101		111
		112	=item $json = cf::to_json $ref
		113
		114	Converts a perl data structure into its JSON representation.
		115
		116	=cut
		117
102	sub to_json($) {	118	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	119	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	120	JSON::Syck::Dump $_[0]
105	}	121	}
106		122
		123	=back
		124
		125	=cut
		126
107	#############################################################################	127	#############################################################################
108	# "new" plug-in system	128
		129	=head2 EVENTS AND OBJECT ATTACHMENTS
		130
		131	=over 4
109		132
110	=item $object->attach ($attachment, key => $value...)	133	=item $object->attach ($attachment, key => $value...)
111		134
		135	=item $object->detach ($attachment)
		136
112	Attach a pre-registered attachment to an object.	137	Attach/detach a pre-registered attachment to an object.
113		138
114	=item $player->attach ($attachment, key => $value...)	139	=item $player->attach ($attachment, key => $value...)
115		140
		141	=item $player->detach ($attachment)
		142
116	Attach a pre-registered attachment to a player.	143	Attach/detach a pre-registered attachment to a player.
117		144
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	145	=item $map->attach ($attachment, key => $value...)
119		146
		147	=item $map->detach ($attachment)
		148
120	Attach a pre-registered attachment to a map.	149	Attach/detach a pre-registered attachment to a map.
		150
		151	=item $bool = $object->attached ($name)
		152
		153	=item $bool = $player->attached ($name)
		154
		155	=item $bool = $map->attached ($name)
		156
		157	Checks wether the named attachment is currently attached to the object.
121		158
122	=item cf::attach_global ...	159	=item cf::attach_global ...
123		160
124	Attach handlers for global events.	161	Attach handlers for global events.
125		162
…		…
173	=item cf::attach_to_maps ...	210	=item cf::attach_to_maps ...
174		211
175	Attach handlers to all maps.	212	Attach handlers to all maps.
176		213
177	=item cf:register_attachment $name, ...	214	=item cf:register_attachment $name, ...
		215
		216	Register an attachment by name through which objects can refer to this
		217	attachment.
		218
		219	=item cf:register_player_attachment $name, ...
		220
		221	Register an attachment by name through which players can refer to this
		222	attachment.
		223
		224	=item cf:register_map_attachment $name, ...
		225
		226	Register an attachment by name through which maps can refer to this
		227	attachment.
178		228
179	=cut	229	=cut
180		230
181	# the following variables are defined in .xs and must not be re-created	231	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	232	our @CB_GLOBAL = (); # registry for all global events
…		…
247	}	297	}
248		298
249	sub _attach_attachment {	299	sub _attach_attachment {
250	my ($obj, $name, %arg) = @_;	300	my ($obj, $name, %arg) = @_;
251		301
		302	return if exists $obj->{_attachment}{$name};
		303
252	my $res;	304	my $res;
253		305
254	if (my $attach = $attachment{$name}) {	306	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	307	my $registry = $obj->registry;
256		308
…		…
268		320
269	$res->{attachment} = $name;	321	$res->{attachment} = $name;
270	$res	322	$res
271	}	323	}
272		324
273	sub cf::object::attach {	325	*cf::object::attach =
		326	*cf::player::attach =
		327	*cf::map::attach = sub {
274	my ($obj, $name, %arg) = @_;	328	my ($obj, $name, %arg) = @_;
275		329
276	_attach_attachment $obj, $name, %arg;	330	_attach_attachment $obj, $name, %arg;
277	}	331	};
278		332
		333	# all those should be optimised
		334	*cf::object::detach =
279	sub cf::player::attach {	335	*cf::player::detach =
		336	*cf::map::detach = sub {
280	my ($obj, $name, %arg) = @_;	337	my ($obj, $name) = @_;
281		338
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	339	delete $obj->{_attachment}{$name};
283	}	340	reattach ($obj);
		341	};
284		342
285	sub cf::map::attach {	343	*cf::object::attached =
		344	*cf::player::attached =
		345	*cf::map::attached = sub {
286	my ($obj, $name, %arg) = @_;	346	my ($obj, $name) = @_;
287		347
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	348	exists $obj->{_attachment}{$name}
289	}	349	};
290		350
291	sub attach_global {	351	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	352	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}	353	}
294		354
…		…
315	my $name = shift;	375	my $name = shift;
316		376
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	377	$attachment{$name} = [[KLASS_OBJECT, @_]];
318	}	378	}
319		379
		380	sub register_player_attachment {
		381	my $name = shift;
		382
		383	$attachment{$name} = [[KLASS_PLAYER, @_]];
		384	}
		385
		386	sub register_map_attachment {
		387	my $name = shift;
		388
		389	$attachment{$name} = [[KLASS_MAP, @_]];
		390	}
		391
320	our $override;	392	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	393	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		394
323	sub override {	395	sub override {
324	$override = 1;	396	$override = 1;
…		…
336	for (@$callbacks) {	408	for (@$callbacks) {
337	eval { &{$_->[1]} };	409	eval { &{$_->[1]} };
338		410
339	if ($@) {	411	if ($@) {
340	warn "$@";	412	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	413	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	414	override;
343	}	415	}
344		416
345	return 1 if $override;	417	return 1 if $override;
346	}	418	}
347		419
348	0	420	0
349	}	421	}
		422
		423	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		424
		425	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		426
		427	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		428
		429	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		430
		431	Generate a global/object/player/map-specific event with the given arguments.
		432
		433	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		434	removed in future versions), and there is no public API to access override
		435	results (if you must, access C<@cf::invoke_results> directly).
		436
		437	=back
		438
		439	=cut
		440
		441	#############################################################################
		442
		443	=head2 METHODS VALID FOR ALL CORE OBJECTS
		444
		445	=over 4
		446
		447	=item $object->valid, $player->valid, $map->valid
		448
		449	Just because you have a perl object does not mean that the corresponding
		450	C-level object still exists. If you try to access an object that has no
		451	valid C counterpart anymore you get an exception at runtime. This method
		452	can be used to test for existence of the C object part without causing an
		453	exception.
		454
		455	=back
		456
		457	=cut
		458
		459	*cf::object::valid =
		460	*cf::player::valid =
		461	*cf::map::valid = \&cf::_valid;
350		462
351	#############################################################################	463	#############################################################################
352	# object support	464	# object support
353		465
354	sub instantiate {	466	sub instantiate {
…		…
383	}	495	}
384	}	496	}
385	}	497	}
386		498
387	sub object_freezer_save {	499	sub object_freezer_save {
388	my ($filename, $objs) = @_;	500	my ($filename, $rdata, $objs) = @_;
389		501
390	if (@$objs) {	502	if (length $$rdata) {
		503	warn sprintf "saving %s (%d,%d)\n",
		504	$filename, length $$rdata, scalar @$objs;
		505
391	open my $fh, ">:raw", "$filename.pst~";	506	if (open my $fh, ">:raw", "$filename~") {
		507	chmod SAVE_MODE, $fh;
		508	syswrite $fh, $$rdata;
		509	close $fh;
		510
		511	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		512	chmod SAVE_MODE, $fh;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	513	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;	514	close $fh;
394	chmod SAVE_MODE, "$filename.pst~";
395	rename "$filename.pst~", "$filename.pst";	515	rename "$filename.pst~", "$filename.pst";
		516	} else {
		517	unlink "$filename.pst";
		518	}
		519
		520	rename "$filename~", $filename;
		521	} else {
		522	warn "FATAL: $filename~: $!\n";
		523	}
396	} else {	524	} else {
		525	unlink $filename;
397	unlink "$filename.pst";	526	unlink "$filename.pst";
398	}	527	}
		528	}
399		529
400	chmod SAVE_MODE, "$filename~";	530	sub object_freezer_as_string {
401	rename "$filename~", $filename;	531	my ($rdata, $objs) = @_;
		532
		533	use Data::Dumper;
		534
		535	$$rdata . Dumper $objs
402	}	536	}
403		537
404	sub object_thawer_load {	538	sub object_thawer_load {
405	my ($filename) = @_;	539	my ($filename) = @_;
406		540
		541	local $/;
		542
		543	my $av;
		544
		545	#TODO: use sysread etc.
		546	if (open my $data, "<:raw:perlio", $filename) {
		547	$data = <$data>;
407	open my $fh, "<:raw:perlio", "$filename.pst"	548	if (open my $pst, "<:raw:perlio", "$filename.pst") {
408	or return;	549	$av = eval { (Storable::thaw <$pst>)->{objs} };
		550	}
		551	return ($data, $av);
		552	}
409		553
410	eval { local $/; (Storable::thaw <$fh>)->{objs} }	554	()
411	}	555	}
412		556
413	attach_to_objects	557	attach_to_objects
414	prio => -1000000,	558	prio => -1000000,
415	on_clone => sub {	559	on_clone => sub {
…		…
500	. "#line 1 \"$path\"\n{\n"	644	. "#line 1 \"$path\"\n{\n"
501	. (do { local $/; <$fh> })	645	. (do { local $/; <$fh> })
502	. "\n};\n1";	646	. "\n};\n1";
503		647
504	eval $source	648	eval $source
505	or die "$path: $@";	649	or die $@ ? "$path: $@\n"
		650	: "extension disabled.\n";
506		651
507	push @exts, $pkg;	652	push @exts, $pkg;
508	$ext_pkg{$base} = $pkg;	653	$ext_pkg{$base} = $pkg;
509		654
510	# no strict 'refs';	655	# no strict 'refs';
…		…
561	load_extension $ext;	706	load_extension $ext;
562	1	707	1
563	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
564	}	709	}
565	}	710	}
566
567	sub _perl_reload(&) {
568	my ($msg) = @_;
569
570	$msg->("reloading...");
571
572	eval {
573	# 1. cancel all watchers
574	$_->cancel for Event::all_watchers;
575
576	# 2. unload all extensions
577	for (@exts) {
578	$msg->("unloading <$_>");
579	unload_extension $_;
580	}
581
582	# 3. unload all modules loaded from $LIBDIR
583	while (my ($k, $v) = each %INC) {
584	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
585
586	$msg->("removing <$k>");
587	delete $INC{$k};
588
589	$k =~ s/\.pm$//;
590	$k =~ s/\//::/g;
591
592	if (my $cb = $k->can ("unload_module")) {
593	$cb->();
594	}
595
596	Symbol::delete_package $k;
597	}
598
599	# 4. get rid of safe::, as good as possible
600	Symbol::delete_package "safe::$_"
601	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
602
603	# 5. remove register_script_function callbacks
604	# TODO
605
606	# 6. unload cf.pm "a bit"
607	delete $INC{"cf.pm"};
608
609	# don't, removes xs symbols, too,
610	# and global variables created in xs
611	#Symbol::delete_package __PACKAGE__;
612
613	# 7. reload cf.pm
614	$msg->("reloading cf.pm");
615	require cf;
616	};
617	$msg->($@) if $@;
618
619	$msg->("reloaded");
620	};
621
622	sub perl_reload() {
623	_perl_reload {
624	warn $_[0];
625	print "$_[0]\n";
626	};
627	}
628
629	register_command "perl-reload", 0, sub {
630	my ($who, $arg) = @_;
631
632	if ($who->flag (FLAG_WIZ)) {
633	_perl_reload {
634	warn $_[0];
635	$who->message ($_[0]);
636	};
637	}
638	};
639		711
640	#############################################################################	712	#############################################################################
641	# extcmd framework, basically convert ext <msg>	713	# extcmd framework, basically convert ext <msg>
642	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few	714	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643		715
…		…
671	defined $path or return;	743	defined $path or return;
672		744
673	unlink "$path.pst";	745	unlink "$path.pst";
674	};	746	};
675		747
676	# old style persistent data, TODO: remove #d#
677	*cf::mapsupport::on_swapin =
678	*cf::mapsupport::on_load = sub {
679	my ($map) = @_;
680
681	my $path = $map->tmpname;
682	$path = $map->path unless defined $path;
683
684	open my $fh, "<:raw", "$path.cfperl"
685	or return; # no perl data
686
687	my $data = Storable::thaw do { local $/; <$fh> };
688
689	$data->{version} <= 1
690	or return; # too new
691
692	$map->_set_obs ($data->{obs});
693	$map->invoke (EVENT_MAP_UPGRADE);
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	748	attach_to_maps prio => -10000, package => cf::mapsupport::;
697		749
698	#############################################################################	750	#############################################################################
699	# load/save perl data associated with player->ob objects	751	# load/save perl data associated with player->ob objects
700		752
701	sub all_objects(@) {	753	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_	754	@_, map all_objects ($_->inv), @_
703	}	755	}
704		756
		757	# TODO: compatibility cruft, remove when no longer needed
705	attach_to_players	758	attach_to_players
706	on_load => sub {	759	on_load => sub {
707	my ($pl, $path) = @_;	760	my ($pl, $path) = @_;
708		761
709	for my $o (all_objects $pl->ob) {	762	for my $o (all_objects $pl->ob) {
…		…
715	}	768	}
716	},	769	},
717	;	770	;
718		771
719	#############################################################################	772	#############################################################################
720	# core extensions - in perl	773
		774	=head2 CORE EXTENSIONS
		775
		776	Functions and methods that extend core crossfire objects.
		777
		778	=over 4
721		779
722	=item cf::player::exists $login	780	=item cf::player::exists $login
723		781
724	Returns true when the given account exists.	782	Returns true when the given account exists.
725		783
…		…
728	sub cf::player::exists($) {	786	sub cf::player::exists($) {
729	cf::player::find $_[0]	787	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	789	}
732		790
733	=item $player->reply ($npc, $msg[, $flags])	791	=item $player_object->reply ($npc, $msg[, $flags])
734		792
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	794	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	795	dialogue with the given NPC character.
738		796
…		…
765	$msg{msgid} = $id;	823	$msg{msgid} = $id;
766		824
767	$self->send ("ext " . to_json \%msg);	825	$self->send ("ext " . to_json \%msg);
768	}	826	}
769		827
		828	=item $player_object->may ("access")
		829
		830	Returns wether the given player is authorized to access resource "access"
		831	(e.g. "command_wizcast").
		832
		833	=cut
		834
		835	sub cf::object::player::may {
		836	my ($self, $access) = @_;
		837
		838	$self->flag (cf::FLAG_WIZ) \|\|
		839	(ref $cf::CFG{"may_$access"}
		840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		841	: $cf::CFG{"may_$access"})
		842	}
		843
		844	=cut
		845
770	#############################################################################	846	#############################################################################
771	# map scripting support	847
		848	=head2 SAFE SCRIPTING
		849
		850	Functions that provide a safe environment to compile and execute
		851	snippets of perl code without them endangering the safety of the server
		852	itself. Looping constructs, I/O operators and other built-in functionality
		853	is not available in the safe scripting environment, and the number of
		854	functions and methods that can be called is greatly reduced.
		855
		856	=cut
772		857
773	our $safe = new Safe "safe";	858	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	859	our $safe_hole = new Safe::Hole;
775		860
776	$SIG{FPE} = 'IGNORE';	861	$SIG{FPE} = 'IGNORE';
777		862
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	863	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		864
780	# here we export the classes and methods available to script code	865	# here we export the classes and methods available to script code
		866
		867	=pod
		868
		869	The following fucntions and emthods are available within a safe environment:
		870
		871	cf::object contr pay_amount pay_player
		872	cf::object::player player
		873	cf::player peaceful
		874
		875	=cut
781		876
782	for (	877	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	878	["cf::object" => qw(contr pay_amount pay_player)],
784	["cf::object::player" => qw(player)],	879	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	880	["cf::player" => qw(peaceful)],
…		…
788	my ($pkg, @funs) = @$_;	883	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	885	for @funs;
791	}	886	}
792		887
		888	=over 4
		889
		890	=item @retval = safe_eval $code, [var => value, ...]
		891
		892	Compiled and executes the given perl code snippet. additional var/value
		893	pairs result in temporary local (my) scalar variables of the given name
		894	that are available in the code snippet. Example:
		895
		896	my $five = safe_eval '$first + $second', first => 1, second => 4;
		897
		898	=cut
		899
793	sub safe_eval($;@) {	900	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	901	my ($code, %vars) = @_;
795		902
796	my $qcode = $code;	903	my $qcode = $code;
797	$qcode =~ s/"/‟/g; # not allowed in #line filenames	904	$qcode =~ s/"/‟/g; # not allowed in #line filenames
…		…
819	}	926	}
820		927
821	wantarray ? @res : $res[0]	928	wantarray ? @res : $res[0]
822	}	929	}
823		930
		931	=item cf::register_script_function $function => $cb
		932
		933	Register a function that can be called from within map/npc scripts. The
		934	function should be reasonably secure and should be put into a package name
		935	like the extension.
		936
		937	Example: register a function that gets called whenever a map script calls
		938	C<rent::overview>, as used by the C<rent> extension.
		939
		940	cf::register_script_function "rent::overview" => sub {
		941	...
		942	};
		943
		944	=cut
		945
824	sub register_script_function {	946	sub register_script_function {
825	my ($fun, $cb) = @_;	947	my ($fun, $cb) = @_;
826		948
827	no strict 'refs';	949	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	950	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	951	}
830		952
		953	=back
		954
		955	=cut
		956
		957	#############################################################################
		958
		959	=head2 EXTENSION DATABASE SUPPORT
		960
		961	Crossfire maintains a very simple database for extension use. It can
		962	currently store anything that can be serialised using Storable, which
		963	excludes objects.
		964
		965	The parameter C<$family> should best start with the name of the extension
		966	using it, it should be unique.
		967
		968	=over 4
		969
		970	=item $hashref = cf::db_get $family
		971
		972	Return a hashref for use by the extension C<$family>, which can be
		973	modified. After modifications, you have to call C<cf::db_dirty> or
		974	C<cf::db_sync>.
		975
		976	=item $value = cf::db_get $family => $key
		977
		978	Returns a single value from the database
		979
		980	=item cf::db_put $family => $hashref
		981
		982	Stores the given family hashref into the database. Updates are delayed, if
		983	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		984
		985	=item cf::db_put $family => $key => $value
		986
		987	Stores the given C<$value> in the family hash. Updates are delayed, if you
		988	want the data to be synced to disk immediately, use C<cf::db_sync>.
		989
		990	=item cf::db_dirty
		991
		992	Marks the database as dirty, to be updated at a later time.
		993
		994	=item cf::db_sync
		995
		996	Immediately write the database to disk I<if it is dirty>.
		997
		998	=cut
		999
		1000	our $DB;
		1001
		1002	{
		1003	my $path = cf::localdir . "/database.pst";
		1004
		1005	sub db_load() {
		1006	warn "loading database $path\n";#d# remove later
		1007	$DB = stat $path ? Storable::retrieve $path : { };
		1008	}
		1009
		1010	my $pid;
		1011
		1012	sub db_save() {
		1013	warn "saving database $path\n";#d# remove later
		1014	waitpid $pid, 0 if $pid;
		1015	if (0 == ($pid = fork)) {
		1016	$DB->{_meta}{version} = 1;
		1017	Storable::nstore $DB, "$path~";
		1018	rename "$path~", $path;
		1019	cf::_exit 0 if defined $pid;
		1020	}
		1021	}
		1022
		1023	my $dirty;
		1024
		1025	sub db_sync() {
		1026	db_save if $dirty;
		1027	undef $dirty;
		1028	}
		1029
		1030	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
		1031	db_sync;
		1032	});
		1033
		1034	sub db_dirty() {
		1035	$dirty = 1;
		1036	$idle->start;
		1037	}
		1038
		1039	sub db_get($;$) {
		1040	@_ >= 2
		1041	? $DB->{$_[0]}{$_[1]}
		1042	: ($DB->{$_[0]} \|\|= { })
		1043	}
		1044
		1045	sub db_put($$;$) {
		1046	if (@_ >= 3) {
		1047	$DB->{$_[0]}{$_[1]} = $_[2];
		1048	} else {
		1049	$DB->{$_[0]} = $_[1];
		1050	}
		1051	db_dirty;
		1052	}
		1053
		1054	attach_global
		1055	prio => 10000,
		1056	on_cleanup => sub {
		1057	db_sync;
		1058	},
		1059	;
		1060	}
		1061
831	#############################################################################	1062	#############################################################################
832	# the server's main()	1063	# the server's main()
833		1064
		1065	sub cfg_load {
		1066	open my $fh, "<:utf8", cf::confdir . "/config"
		1067	or return;
		1068
		1069	local $/;
		1070	*CFG = YAML::Syck::Load <$fh>;
		1071	}
		1072
834	sub main {	1073	sub main {
		1074	cfg_load;
		1075	db_load;
		1076	load_extensions;
835	Event::loop;	1077	Event::loop;
836	}	1078	}
837		1079
838	#############################################################################	1080	#############################################################################
839	# initialisation	1081	# initialisation
840		1082
		1083	sub _perl_reload(&) {
		1084	my ($msg) = @_;
		1085
		1086	$msg->("reloading...");
		1087
		1088	eval {
		1089	# cancel all watchers
		1090	$_->cancel for Event::all_watchers;
		1091
		1092	# unload all extensions
		1093	for (@exts) {
		1094	$msg->("unloading <$_>");
		1095	unload_extension $_;
		1096	}
		1097
		1098	# unload all modules loaded from $LIBDIR
		1099	while (my ($k, $v) = each %INC) {
		1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1101
		1102	$msg->("removing <$k>");
		1103	delete $INC{$k};
		1104
		1105	$k =~ s/\.pm$//;
		1106	$k =~ s/\//::/g;
		1107
		1108	if (my $cb = $k->can ("unload_module")) {
		1109	$cb->();
		1110	}
		1111
		1112	Symbol::delete_package $k;
		1113	}
		1114
		1115	# sync database to disk
		1116	cf::db_sync;
		1117
		1118	# get rid of safe::, as good as possible
		1119	Symbol::delete_package "safe::$_"
		1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1121
		1122	# remove register_script_function callbacks
		1123	# TODO
		1124
		1125	# unload cf.pm "a bit"
		1126	delete $INC{"cf.pm"};
		1127
		1128	# don't, removes xs symbols, too,
		1129	# and global variables created in xs
		1130	#Symbol::delete_package __PACKAGE__;
		1131
		1132	# reload cf.pm
		1133	$msg->("reloading cf.pm");
		1134	require cf;
		1135
		1136	# load config and database again
		1137	cf::cfg_load;
		1138	cf::db_load;
		1139
		1140	# load extensions
		1141	$msg->("load extensions");
		1142	cf::load_extensions;
		1143
		1144	# reattach attachments to objects
		1145	$msg->("reattach");
		1146	_global_reattach;
		1147	};
		1148	$msg->($@) if $@;
		1149
		1150	$msg->("reloaded");
		1151	};
		1152
		1153	sub perl_reload() {
		1154	_perl_reload {
		1155	warn $_[0];
		1156	print "$_[0]\n";
		1157	};
		1158	}
		1159
		1160	register_command "perl-reload", 0, sub {
		1161	my ($who, $arg) = @_;
		1162
		1163	if ($who->flag (FLAG_WIZ)) {
		1164	_perl_reload {
		1165	warn $_[0];
		1166	$who->message ($_[0]);
		1167	};
		1168	}
		1169	};
		1170
841	register "<global>", __PACKAGE__;	1171	register "<global>", __PACKAGE__;
842		1172
843	unshift @INC, $LIBDIR;	1173	unshift @INC, $LIBDIR;
844		1174
845	load_extensions;
846
847	$TICK_WATCHER = Event->timer (	1175	$TICK_WATCHER = Event->timer (
848	prio => 1,	1176	prio => 1,
		1177	async => 1,
849	at => $NEXT_TICK \|\| 1,	1178	at => $NEXT_TICK \|\| 1,
850	cb => sub {	1179	cb => sub {
851	cf::server_tick; # one server iteration	1180	cf::server_tick; # one server iteration
852		1181
853	my $NOW = Event::time;	1182	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	1183	$NEXT_TICK += $TICK;
855		1184
856	# if we are delayed by four ticks, skip them all	1185	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1186	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
858		1187
859	$TICK_WATCHER->at ($NEXT_TICK);	1188	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	1189	$TICK_WATCHER->start;
861	},	1190	},
862	);	1191	);
863		1192
864	_reload_2;	1193	IO::AIO::max_poll_time $TICK * 0.2;
		1194
		1195	Event->io (fd => IO::AIO::poll_fileno,
		1196	poll => 'r',
		1197	prio => 5,
		1198	cb => \&IO::AIO::poll_cb);
865		1199
866	1	1200	1
867		1201

Diff Legend

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

Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs. Revision 1.84 by root, Mon Dec 11 02:54:57 2006 UTC

Diff Legend

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.84 by root, Mon Dec 11 02:54:57 2006 UTC