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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.38 by root, Thu Aug 24 17:29:30 2006 UTC vs.
Revision 1.99 by root, Sat Dec 23 05:25:35 2006 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro;
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18
		19	use IO::AIO 2.3;
		20	use YAML::Syck ();
10	use Time::HiRes;	21	use Time::HiRes;
11	use Event;	22
12	$Event::Eval = 1; # no idea why this is required, but it is	23	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		24
14	use strict;	25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		26	$YAML::Syck::ImplicitUnicode = 1;
15		27
16	our %COMMAND;	28	$Coro::main->prio (Coro::PRIO_MIN);
		29
		30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		31
		32	our %COMMAND = ();
		33	our %COMMAND_TIME = ();
		34	our %EXTCMD = ();
		35
		36	_init_vars;
		37
17	our @EVENT;	38	our @EVENT;
18	our @PLUGIN_EVENT;	39	our $LIBDIR = datadir . "/ext";
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";
22		40
23	our $TICK = MAX_TIME * 1e-6;	41	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;	42	our $TICK_WATCHER;
25	our $NEXT_TICK;	43	our $NEXT_TICK;
26		44
		45	our %CFG;
		46
		47	our $UPTIME; $UPTIME ||= time;
		48
		49	#############################################################################
		50
		51	=head2 GLOBAL VARIABLES
		52
		53	=over 4
		54
		55	=item $cf::UPTIME
		56
		57	The timestamp of the server start (so not actually an uptime).
		58
		59	=item $cf::LIBDIR
		60
		61	The perl library directory, where extensions and cf-specific modules can
		62	be found. It will be added to C<@INC> automatically.
		63
		64	=item $cf::TICK
		65
		66	The interval between server ticks, in seconds.
		67
		68	=item %cf::CFG
		69
		70	Configuration for the server, loaded from C</etc/crossfire/config>, or
		71	from wherever your confdir points to.
		72
		73	=back
		74
		75	=cut
		76
27	BEGIN {	77	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {	78	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;	79	my $msg = join "", @_;
32	$msg .= "\n"	80	$msg .= "\n"
33	unless $msg =~ /\n$/;	81	unless $msg =~ /\n$/;
34		82
35	print STDERR "cfperl: $msg";	83	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";	84	LOG llevError, "cfperl: $msg";
37	};	85	};
38	}	86	}
39		87
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	88	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		89	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		90	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		91	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		92	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		93	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
41		94
42	# generate property mutators	95	# we bless all objects into (empty) derived classes to force a method lookup
43	sub prop_gen {	96	# within the Safe compartment.
44	my ($prefix, $class) = @_;	97	for my $pkg (qw(
45		98	cf::global
		99	cf::object cf::object::player
		100	cf::client cf::player
		101	cf::arch cf::living
		102	cf::map cf::party cf::region
		103	)) {
46	no strict 'refs';	104	no strict 'refs';
47
48	for my $prop (keys %PROP_TYPE) {
49	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
50	my $sub = lc $1;
51
52	my $type = $PROP_TYPE{$prop};
53	my $idx = $PROP_IDX {$prop};
54
55	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
56	$_[0]->get_property ($type, $idx)
57	};
58
59	*{"$class\::set_$sub"} = sub {
60	$_[0]->set_property ($type, $idx, $_[1]);
61	} unless $ignore_set{$prop};
62	}
63	}
64
65	# auto-generate most of the API
66
67	prop_gen OBJECT_PROP => "cf::object";
68	# CFAPI_OBJECT_ANIMATION?
69	prop_gen PLAYER_PROP => "cf::object::player";
70
71	prop_gen MAP_PROP => "cf::map";
72	prop_gen ARCH_PROP => "cf::arch";
73
74	# guessed hierarchies
75
76	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78
79	# we bless all objects into derived classes to force a method lookup
80	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
82	no strict 'refs';
83	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	105	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	106	}
85		107
86	$Event::DIED = sub {	108	$Event::DIED = sub {
87	warn "error in event callback: @_";	109	warn "error in event callback: @_";
88	};	110	};
89		111
90	my %ext_pkg;	112	my %ext_pkg;
91	my @exts;	113	my @exts;
92	my @hook;	114	my @hook;
93	my %command;
94	my %extcmd;
95		115
96	sub inject_event {	116	=head2 UTILITY FUNCTIONS
97	my $extension = shift;
98	my $event_code = shift;
99		117
100	my $cb = $hook[$event_code]{$extension}	118	=over 4
101	or return;
102		119
103	&$cb	120	=cut
104	}
105		121
106	sub inject_global_event {	122	use JSON::Syck (); # TODO# replace by JSON::PC once working
		123
		124	=item $ref = cf::from_json $json
		125
		126	Converts a JSON string into the corresponding perl data structure.
		127
		128	=cut
		129
		130	sub from_json($) {
		131	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		132	JSON::Syck::Load $_[0]
		133	}
		134
		135	=item $json = cf::to_json $ref
		136
		137	Converts a perl data structure into its JSON representation.
		138
		139	=cut
		140
		141	sub to_json($) {
		142	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		143	JSON::Syck::Dump $_[0]
		144	}
		145
		146	=back
		147
		148	=cut
		149
		150	#############################################################################
		151
		152	=head2 ATTACHABLE OBJECTS
		153
		154	Many objects in crossfire are so-called attachable objects. That means you can
		155	attach callbacks/event handlers (a collection of which is called an "attachment")
		156	to it. All such attachable objects support the following methods.
		157
		158	In the following description, CLASS can be any of C<global>, C<object>
		159	C<player>, C<client> or C<map> (i.e. the attachable objects in
		160	crossfire+).
		161
		162	=over 4
		163
		164	=item $attachable->attach ($attachment, key => $value...)
		165
		166	=item $attachable->detach ($attachment)
		167
		168	Attach/detach a pre-registered attachment to a specific object and give it
		169	the specified key/value pairs as arguments.
		170
		171	Example, attach a minesweeper attachment to the given object, making it a
		172	10x10 minesweeper game:
		173
		174	$obj->attach (minesweeper => width => 10, height => 10);
		175
		176	=item $bool = $attachable->attached ($name)
		177
		178	Checks wether the named attachment is currently attached to the object.
		179
		180	=item cf::CLASS->attach ...
		181
		182	=item cf::CLASS->detach ...
		183
		184	Define an anonymous attachment and attach it to all objects of the given
		185	CLASS. See the next function for an explanation of its arguments.
		186
		187	You can attach to global events by using the C<cf::global> class.
		188
		189	Example, log all player logins:
		190
		191	cf::player->attach (
		192	on_login => sub {
		193	my ($pl) = @_;
		194	...
		195	},
		196	);
		197
		198	Example, attach to the jeweler skill:
		199
		200	cf::object->attach (
		201	type => cf::SKILL,
		202	subtype => cf::SK_JEWELER,
		203	on_use_skill => sub {
		204	my ($sk, $ob, $part, $dir, $msg) = @_;
		205	...
		206	},
		207	);
		208
		209	=item cf::CLASS::attachment $name, ...
		210
		211	Register an attachment by C<$name> through which attachable objects of the
		212	given CLASS can refer to this attachment.
		213
		214	Some classes such as crossfire maps and objects can specify attachments
		215	that are attached at load/instantiate time, thus the need for a name.
		216
		217	These calls expect any number of the following handler/hook descriptions:
		218
		219	=over 4
		220
		221	=item prio => $number
		222
		223	Set the priority for all following handlers/hooks (unless overwritten
		224	by another C<prio> setting). Lower priority handlers get executed
		225	earlier. The default priority is C<0>, and many built-in handlers are
		226	registered at priority C<-1000>, so lower priorities should not be used
		227	unless you know what you are doing.
		228
		229	=item type => $type
		230
		231	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		232	given type of objects only (the additional parameter C<subtype> can be
		233	used to further limit to the given subtype).
		234
		235	=item on_I<event> => \&cb
		236
		237	Call the given code reference whenever the named event happens (event is
		238	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		239	handlers are recognised generally depends on the type of object these
		240	handlers attach to).
		241
		242	See F<include/eventinc.h> for the full list of events supported, and their
		243	class.
		244
		245	=item package => package::
		246
		247	Look for sub functions of the name C<< on_I<event> >> in the given
		248	package and register them. Only handlers for eevents supported by the
		249	object/class are recognised.
		250
		251	=back
		252
		253	Example, define an attachment called "sockpuppet" that calls the given
		254	event handler when a monster attacks:
		255
		256	cf::object::attachment sockpuppet =>
		257	on_skill_attack => sub {
		258	my ($self, $victim) = @_;
		259	...
		260	}
		261	}
		262
		263	=item $attachable->valid
		264
		265	Just because you have a perl object does not mean that the corresponding
		266	C-level object still exists. If you try to access an object that has no
		267	valid C counterpart anymore you get an exception at runtime. This method
		268	can be used to test for existence of the C object part without causing an
		269	exception.
		270
		271	=cut
		272
		273	# the following variables are defined in .xs and must not be re-created
		274	our @CB_GLOBAL = (); # registry for all global events
		275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		276	our @CB_PLAYER = ();
		277	our @CB_CLIENT = ();
		278	our @CB_TYPE = (); # registry for type (cf-object class) based events
		279	our @CB_MAP = ();
		280
		281	my %attachment;
		282
		283	sub _attach_cb($$$$) {
		284	my ($registry, $event, $prio, $cb) = @_;
		285
		286	use sort 'stable';
		287
		288	$cb = [$prio, $cb];
		289
		290	@{$registry->[$event]} = sort
		291	{ $a->[0] cmp $b->[0] }
		292	@{$registry->[$event] || []}, $cb;
		293	}
		294
		295	# attach handles attaching event callbacks
		296	# the only thing the caller has to do is pass the correct
		297	# registry (== where the callback attaches to).
		298	sub _attach {
		299	my ($registry, $klass, @arg) = @_;
		300
		301	my $object_type;
		302	my $prio = 0;
		303	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		304
		305	while (@arg) {
		306	my $type = shift @arg;
		307
		308	if ($type eq "prio") {
		309	$prio = shift @arg;
		310
		311	} elsif ($type eq "type") {
		312	$object_type = shift @arg;
		313	$registry = $CB_TYPE[$object_type] ||= [];
		314
		315	} elsif ($type eq "subtype") {
		316	defined $object_type or Carp::croak "subtype specified without type";
		317	my $object_subtype = shift @arg;
		318	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		319
		320	} elsif ($type eq "package") {
		321	my $pkg = shift @arg;
		322
		323	while (my ($name, $id) = each %cb_id) {
		324	if (my $cb = $pkg->can ($name)) {
		325	_attach_cb $registry, $id, $prio, $cb;
		326	}
		327	}
		328
		329	} elsif (exists $cb_id{$type}) {
		330	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		331
		332	} elsif (ref $type) {
		333	warn "attaching objects not supported, ignoring.\n";
		334
		335	} else {
		336	shift @arg;
		337	warn "attach argument '$type' not supported, ignoring.\n";
		338	}
		339	}
		340	}
		341
		342	sub _object_attach {
		343	my ($obj, $name, %arg) = @_;
		344
		345	return if exists $obj->{_attachment}{$name};
		346
		347	if (my $attach = $attachment{$name}) {
		348	my $registry = $obj->registry;
		349
		350	for (@$attach) {
		351	my ($klass, @attach) = @$_;
		352	_attach $registry, $klass, @attach;
		353	}
		354
		355	$obj->{$name} = \%arg;
		356	} else {
		357	warn "object uses attachment '$name' that is not available, postponing.\n";
		358	}
		359
		360	$obj->{_attachment}{$name} = undef;
		361	}
		362
		363	sub cf::attachable::attach {
		364	if (ref $_[0]) {
		365	_object_attach @_;
		366	} else {
		367	_attach shift->_attach_registry, @_;
		368	}
		369	};
		370
		371	# all those should be optimised
		372	sub cf::attachable::detach {
		373	my ($obj, $name) = @_;
		374
		375	if (ref $obj) {
		376	delete $obj->{_attachment}{$name};
		377	reattach ($obj);
		378	} else {
		379	Carp::croak "cannot, currently, detach class attachments";
		380	}
		381	};
		382
		383	sub cf::attachable::attached {
		384	my ($obj, $name) = @_;
		385
		386	exists $obj->{_attachment}{$name}
		387	}
		388
		389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
		390	eval "#line " . __LINE__ . " 'cf.pm'
		391	sub cf::\L$klass\E::_attach_registry {
		392	(\\\@CB_$klass, KLASS_$klass)
		393	}
		394
		395	sub cf::\L$klass\E::attachment {
		396	my \$name = shift;
		397
		398	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		399	}
		400	";
		401	die if $@;
		402	}
		403
		404	our $override;
		405	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		406
		407	sub override {
		408	$override = 1;
		409	@invoke_results = ();
		410	}
		411
		412	sub do_invoke {
107	my $event = shift;	413	my $event = shift;
		414	my $callbacks = shift;
108		415
109	my $cb = $hook[$event]	416	@invoke_results = ();
110	or return;
111		417
112	List::Util::max map &$_, values %$cb	418	local $override;
113	}
114		419
115	sub inject_command {	420	for (@$callbacks) {
		421	eval { &{$_->[1]} };
		422
		423	if ($@) {
		424	warn "$@";
		425	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		426	override;
		427	}
		428
		429	return 1 if $override;
		430	}
		431
		432	0
		433	}
		434
		435	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		436
		437	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		438
		439	Generate an object-specific event with the given arguments.
		440
		441	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		442	removed in future versions), and there is no public API to access override
		443	results (if you must, access C<@cf::invoke_results> directly).
		444
		445	=back
		446
		447	=cut
		448
		449	#############################################################################
		450	# object support
		451
		452	sub instantiate {
		453	my ($obj, $data) = @_;
		454
		455	$data = from_json $data;
		456
		457	for (@$data) {
116	my ($name, $obj, $params) = @_;	458	my ($name, $args) = @$_;
117		459
118	for my $cmd (@{ $command{$name} }) {	460	$obj->attach ($name, %{$args || {} });
119	$cmd->[1]->($obj, $params);	461	}
		462	}
		463
		464	# basically do the same as instantiate, without calling instantiate
		465	sub reattach {
		466	my ($obj) = @_;
		467	my $registry = $obj->registry;
		468
		469	@$registry = ();
		470
		471	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		472
		473	for my $name (keys %{ $obj->{_attachment} || {} }) {
		474	if (my $attach = $attachment{$name}) {
		475	for (@$attach) {
		476	my ($klass, @attach) = @$_;
		477	_attach $registry, $klass, @attach;
		478	}
		479	} else {
		480	warn "object uses attachment '$name' that is not available, postponing.\n";
		481	}
		482	}
		483	}
		484
		485	sub object_freezer_save {
		486	my ($filename, $rdata, $objs) = @_;
		487
		488	if (length $$rdata) {
		489	warn sprintf "saving %s (%d,%d)\n",
		490	$filename, length $$rdata, scalar @$objs;
		491
		492	if (open my $fh, ">:raw", "$filename~") {
		493	chmod SAVE_MODE, $fh;
		494	syswrite $fh, $$rdata;
		495	close $fh;
		496
		497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		498	chmod SAVE_MODE, $fh;
		499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		500	close $fh;
		501	rename "$filename.pst~", "$filename.pst";
		502	} else {
		503	unlink "$filename.pst";
		504	}
		505
		506	rename "$filename~", $filename;
		507	} else {
		508	warn "FATAL: $filename~: $!\n";
		509	}
		510	} else {
		511	unlink $filename;
		512	unlink "$filename.pst";
		513	}
		514	}
		515
		516	sub object_freezer_as_string {
		517	my ($rdata, $objs) = @_;
		518
		519	use Data::Dumper;
		520
		521	$$rdata . Dumper $objs
		522	}
		523
		524	sub object_thawer_load {
		525	my ($filename) = @_;
		526
		527	local $/;
		528
		529	my $av;
		530
		531	#TODO: use sysread etc.
		532	if (open my $data, "<:raw:perlio", $filename) {
		533	$data = <$data>;
		534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		535	$av = eval { (Storable::thaw <$pst>)->{objs} };
		536	}
		537	return ($data, $av);
		538	}
		539
		540	()
		541	}
		542
		543	cf::object->attach (
		544	prio => -1000000,
		545	on_clone => sub {
		546	my ($src, $dst) = @_;
		547
		548	@{$dst->registry} = @{$src->registry};
		549
		550	%$dst = %$src;
		551
		552	%{$dst->{_attachment}} = %{$src->{_attachment}}
		553	if exists $src->{_attachment};
120	}	554	},
		555	);
121		556
122	-1	557	#############################################################################
123	}	558	# command handling &c
		559
		560	=item cf::register_command $name => \&callback($ob,$args);
		561
		562	Register a callback for execution when the client sends the user command
		563	$name.
		564
		565	=cut
124		566
125	sub register_command {	567	sub register_command {
126	my ($name, $time, $cb) = @_;	568	my ($name, $cb) = @_;
127		569
128	my $caller = caller;	570	my $caller = caller;
129	#warn "registering command '$name/$time' to '$caller'";	571	#warn "registering command '$name/$time' to '$caller'";
130		572
131	push @{ $command{$name} }, [$time, $cb, $caller];	573	push @{ $COMMAND{$name} }, [$caller, $cb];
132	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
133	}	574	}
		575
		576	=item cf::register_extcmd $name => \&callback($pl,$packet);
		577
		578	Register a callbackf ro execution when the client sends an extcmd packet.
		579
		580	If the callback returns something, it is sent back as if reply was being
		581	called.
		582
		583	=cut
134		584
135	sub register_extcmd {	585	sub register_extcmd {
136	my ($name, $cb) = @_;	586	my ($name, $cb) = @_;
137		587
138	my $caller = caller;	588	my $caller = caller;
139	#warn "registering extcmd '$name' to '$caller'";	589	#warn "registering extcmd '$name' to '$caller'";
140		590
141	$extcmd{$name} = [$cb, $caller];	591	$EXTCMD{$name} = [$cb, $caller];
142	}	592	}
		593
		594	cf::player->attach (
		595	on_command => sub {
		596	my ($pl, $name, $params) = @_;
		597
		598	my $cb = $COMMAND{$name}
		599	or return;
		600
		601	for my $cmd (@$cb) {
		602	$cmd->[1]->($pl->ob, $params);
		603	}
		604
		605	cf::override;
		606	},
		607	on_extcmd => sub {
		608	my ($pl, $buf) = @_;
		609
		610	my $msg = eval { from_json $buf };
		611
		612	if (ref $msg) {
		613	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		614	if (my %reply = $cb->[0]->($pl, $msg)) {
		615	$pl->ext_reply ($msg->{msgid}, %reply);
		616	}
		617	}
		618	} else {
		619	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		620	}
		621
		622	cf::override;
		623	},
		624	);
143		625
144	sub register {	626	sub register {
145	my ($base, $pkg) = @_;	627	my ($base, $pkg) = @_;
146		628
147	for my $idx (0 .. $#PLUGIN_EVENT) {	629	#TODO
148	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
149	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
150	$hook[$idx]{$base} = $ref;
151	}
152	}
153	}	630	}
154		631
155	sub load_extension {	632	sub load_extension {
156	my ($path) = @_;	633	my ($path) = @_;
157		634
158	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	635	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
159	my $base = $1;	636	my $base = $1;
160	my $pkg = $1;	637	my $pkg = $1;
161	$pkg =~ s/[^[:word:]]/_/g;	638	$pkg =~ s/[^[:word:]]/_/g;
162	$pkg = "cf::ext::$pkg";	639	$pkg = "ext::$pkg";
163		640
164	warn "loading '$path' into '$pkg'\n";	641	warn "loading '$path' into '$pkg'\n";
165		642
166	open my $fh, "<:utf8", $path	643	open my $fh, "<:utf8", $path
167	or die "$path: $!";	644	or die "$path: $!";
…		…
171	. "#line 1 \"$path\"\n{\n"	648	. "#line 1 \"$path\"\n{\n"
172	. (do { local $/; <$fh> })	649	. (do { local $/; <$fh> })
173	. "\n};\n1";	650	. "\n};\n1";
174		651
175	eval $source	652	eval $source
176	or die "$path: $@";	653	or die $@ ? "$path: $@\n"
		654	: "extension disabled.\n";
177		655
178	push @exts, $pkg;	656	push @exts, $pkg;
179	$ext_pkg{$base} = $pkg;	657	$ext_pkg{$base} = $pkg;
180		658
181	# no strict 'refs';	659	# no strict 'refs';
…		…
188	my ($pkg) = @_;	666	my ($pkg) = @_;
189		667
190	warn "removing extension $pkg\n";	668	warn "removing extension $pkg\n";
191		669
192	# remove hooks	670	# remove hooks
		671	#TODO
193	for my $idx (0 .. $#PLUGIN_EVENT) {	672	# for my $idx (0 .. $#PLUGIN_EVENT) {
194	delete $hook[$idx]{$pkg};	673	# delete $hook[$idx]{$pkg};
195	}	674	# }
196		675
197	# remove commands	676	# remove commands
198	for my $name (keys %command) {	677	for my $name (keys %COMMAND) {
199	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
200		679
201	if (@cb) {	680	if (@cb) {
202	$command{$name} = \@cb;	681	$COMMAND{$name} = \@cb;
203	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
204	} else {	682	} else {
205	delete $command{$name};
206	delete $COMMAND{"$name\000"};	683	delete $COMMAND{$name};
207	}	684	}
208	}	685	}
209		686
210	# remove extcmds	687	# remove extcmds
211	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
212	delete $extcmd{$name};	689	delete $EXTCMD{$name};
213	}	690	}
214		691
215	if (my $cb = $pkg->can ("on_unload")) {	692	if (my $cb = $pkg->can ("unload")) {
216	eval {	693	eval {
217	$cb->($pkg);	694	$cb->($pkg);
218	1	695	1
219	} or warn "$pkg unloaded, but with errors: $@";	696	} or warn "$pkg unloaded, but with errors: $@";
220	}	697	}
221		698
222	Symbol::delete_package $pkg;	699	Symbol::delete_package $pkg;
223	}	700	}
224		701
225	sub load_extensions {	702	sub load_extensions {
226	my $LIBDIR = maps_directory "perl";
227
228	for my $ext (<$LIBDIR/*.ext>) {	703	for my $ext (<$LIBDIR/*.ext>) {
229	next unless -r $ext;	704	next unless -r $ext;
230	eval {	705	eval {
231	load_extension $ext;	706	load_extension $ext;
232	1	707	1
233	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
234	}	709	}
235	}	710	}
236		711
237	sub _perl_reload(&) {
238	my ($msg) = @_;
239
240	$msg->("reloading...");
241
242	eval {
243	# 1. cancel all watchers
244	$_->cancel for Event::all_watchers;
245
246	# 2. unload all extensions
247	for (@exts) {
248	$msg->("unloading <$_>");
249	unload_extension $_;
250	}
251
252	# 3. unload all modules loaded from $LIBDIR
253	while (my ($k, $v) = each %INC) {
254	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
255
256	$msg->("removing <$k>");
257	delete $INC{$k};
258
259	$k =~ s/\.pm$//;
260	$k =~ s/\//::/g;
261
262	if (my $cb = $k->can ("unload_module")) {
263	$cb->();
264	}
265
266	Symbol::delete_package $k;
267	}
268
269	# 4. get rid of ext::, as good as possible
270	Symbol::delete_package "ext::$_"
271	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
272
273	# 5. remove register_script_function callbacks
274	# TODO
275
276	# 6. unload cf.pm "a bit"
277	delete $INC{"cf.pm"};
278
279	# don't, removes xs symbols, too
280	#Symbol::delete_package __PACKAGE__;
281
282	# 7. reload cf.pm
283	$msg->("reloading cf.pm");
284	require cf;
285	};
286	$msg->($@) if $@;
287
288	$msg->("reloaded");
289	};
290
291	sub perl_reload() {
292	_perl_reload {
293	warn $_[0];
294	print "$_[0]\n";
295	};
296	}
297
298	register_command "perl-reload", 0, sub {
299	my ($who, $arg) = @_;
300
301	if ($who->flag (FLAG_WIZ)) {
302	_perl_reload {
303	warn $_[0];
304	$who->message ($_[0]);
305	};
306	}
307	};
308
309	#############################################################################
310	# utility functions
311
312	use JSON::Syck (); # TODO# replace by JSON::PC once working
313
314	sub from_json($) {
315	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
316	JSON::Syck::Load $_[0]
317	}
318
319	sub to_json($) {
320	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
321	JSON::Syck::Dump $_[0]
322	}
323
324	#############################################################################
325	# extcmd framework, basically convert ext <msg>
326	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
327
328	sub on_extcmd {
329	my ($pl, $buf) = @_;
330
331	my $msg = eval { from_json $buf };
332
333	if (ref $msg) {
334	if (my $cb = $extcmd{$msg->{msgtype}}) {
335	if (my %reply = $cb->[0]->($pl, $msg)) {
336	$pl->ext_reply ($msg->{msgid}, %reply);
337	}
338	}
339	} else {
340	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
341	}
342
343	1
344	}
345
346	#############################################################################	712	#############################################################################
347	# load/save/clean perl data associated with a map	713	# load/save/clean perl data associated with a map
348		714
349	*on_mapclean = sub {	715	*cf::mapsupport::on_clean = sub {
350	my ($map) = @_;	716	my ($map) = @_;
351		717
352	my $path = $map->tmpname;	718	my $path = $map->tmpname;
353	defined $path or return;	719	defined $path or return;
354		720
355	unlink "$path.cfperl";	721	unlink "$path.pst";
356	};	722	};
357		723
358	*on_mapin =	724	cf::map->attach (prio => -10000, package => cf::mapsupport::);
359	*on_mapload = sub {
360	my ($map) = @_;
361
362	my $path = $map->tmpname;
363	$path = $map->path unless defined $path;
364
365	open my $fh, "<:raw", "$path.cfperl"
366	or return; # no perl data
367
368	my $data = Storable::thaw do { local $/; <$fh> };
369
370	$data->{version} <= 1
371	or return; # too new
372
373	$map->_set_obs ($data->{obs});
374	};
375
376	*on_mapout = sub {
377	my ($map) = @_;
378
379	my $path = $map->tmpname;
380	$path = $map->path unless defined $path;
381
382	my $obs = $map->_get_obs;
383
384	if (defined $obs) {
385	open my $fh, ">:raw", "$path.cfperl"
386	or die "$path.cfperl: $!";
387
388	stat $path;
389
390	print $fh Storable::nfreeze {
391	size => (stat _)[7],
392	time => (stat _)[9],
393	version => 1,
394	obs => $obs,
395	};
396
397	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
398	} else {
399	unlink "$path.cfperl";
400	}
401	};
402		725
403	#############################################################################	726	#############################################################################
404	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
405		728
406	sub all_objects(@) {	729	sub all_objects(@) {
407	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
408	}	731	}
409		732
410	*on_player_load = sub {	733	# TODO: compatibility cruft, remove when no longer needed
		734	cf::player->attach (
		735	on_load => sub {
411	my ($ob, $path) = @_;	736	my ($pl, $path) = @_;
412		737
413	for my $o (all_objects $ob) {	738	for my $o (all_objects $pl->ob) {
414	if (my $value = $o->get_ob_key_value ("_perl_data")) {	739	if (my $value = $o->get_ob_key_value ("_perl_data")) {
415	$o->set_ob_key_value ("_perl_data");	740	$o->set_ob_key_value ("_perl_data");
416		741
417	%$o = %{ Storable::thaw pack "H*", $value };	742	%$o = %{ Storable::thaw pack "H*", $value };
418	}	743	}
		744	}
419	}	745	},
420	};	746	);
421
422	*on_player_save = sub {
423	my ($ob, $path) = @_;
424
425	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
426	for grep %$_, all_objects $ob;
427	};
428		747
429	#############################################################################	748	#############################################################################
430	# core extensions - in perl	749
		750	=head2 CORE EXTENSIONS
		751
		752	Functions and methods that extend core crossfire objects.
		753
		754	=head3 cf::player
		755
		756	=over 4
431		757
432	=item cf::player::exists $login	758	=item cf::player::exists $login
433		759
434	Returns true when the given account exists.	760	Returns true when the given account exists.
435		761
…		…
438	sub cf::player::exists($) {	764	sub cf::player::exists($) {
439	cf::player::find $_[0]	765	cf::player::find $_[0]
440	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	766	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
441	}	767	}
442		768
		769	=item $player->ext_reply ($msgid, $msgtype, %msg)
		770
		771	Sends an ext reply to the player.
		772
		773	=cut
		774
		775	sub cf::player::ext_reply($$$%) {
		776	my ($self, $id, %msg) = @_;
		777
		778	$msg{msgid} = $id;
		779
		780	$self->send ("ext " . to_json \%msg);
		781	}
		782
		783	=back
		784
		785	=head3 cf::object::player
		786
		787	=over 4
		788
443	=item $player->reply ($npc, $msg[, $flags])	789	=item $player_object->reply ($npc, $msg[, $flags])
444		790
445	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
446	can be C<undef>. Does the right thing when the player is currently in a	792	can be C<undef>. Does the right thing when the player is currently in a
447	dialogue with the given NPC character.	793	dialogue with the given NPC character.
448		794
449	=cut	795	=cut
450		796
451	# rough implementation of a future "reply" method that works	797	# rough implementation of a future "reply" method that works
452	# with dialog boxes.	798	# with dialog boxes.
		799	#TODO: the first argument must go, split into a $npc->reply_to ( method
453	sub cf::object::player::reply($$$;$) {	800	sub cf::object::player::reply($$$;$) {
454	my ($self, $npc, $msg, $flags) = @_;	801	my ($self, $npc, $msg, $flags) = @_;
455		802
456	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	803	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
457		804
…		…
461	$msg = $npc->name . " says: $msg" if $npc;	808	$msg = $npc->name . " says: $msg" if $npc;
462	$self->message ($msg, $flags);	809	$self->message ($msg, $flags);
463	}	810	}
464	}	811	}
465		812
466	=item $player->ext_reply ($msgid, $msgtype, %msg)	813	=item $player_object->may ("access")
467		814
468	Sends an ext reply to the player.	815	Returns wether the given player is authorized to access resource "access"
		816	(e.g. "command_wizcast").
469		817
470	=cut	818	=cut
471		819
472	sub cf::player::ext_reply($$$%) {	820	sub cf::object::player::may {
		821	my ($self, $access) = @_;
		822
		823	$self->flag (cf::FLAG_WIZ) ||
		824	(ref $cf::CFG{"may_$access"}
		825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		826	: $cf::CFG{"may_$access"})
		827	}
		828
		829	=head3 cf::client
		830
		831	=over 4
		832
		833	=item $client->send_drawinfo ($text, $flags)
		834
		835	Sends a drawinfo packet to the client. Circumvents output buffering so
		836	should not be used under normal circumstances.
		837
		838	=cut
		839
		840	sub cf::client::send_drawinfo {
		841	my ($self, $text, $flags) = @_;
		842
		843	utf8::encode $text;
		844	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		845	}
		846
		847
		848	=item $success = $client->query ($flags, "text", \&cb)
		849
		850	Queues a query to the client, calling the given callback with
		851	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		852	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		853
		854	Queries can fail, so check the return code. Or don't, as queries will become
		855	reliable at some point in the future.
		856
		857	=cut
		858
		859	sub cf::client::query {
		860	my ($self, $flags, $text, $cb) = @_;
		861
		862	return unless $self->state == ST_PLAYING
		863	|| $self->state == ST_SETUP
		864	|| $self->state == ST_CUSTOM;
		865
		866	$self->state (ST_CUSTOM);
		867
		868	utf8::encode $text;
		869	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		870
		871	$self->send_packet ($self->{query_queue}[0][0])
		872	if @{ $self->{query_queue} } == 1;
		873	}
		874
		875	cf::client->attach (
		876	on_reply => sub {
		877	my ($ns, $msg) = @_;
		878
		879	# this weird shuffling is so that direct followup queries
		880	# get handled first
		881	my $queue = delete $ns->{query_queue};
		882
		883	(shift @$queue)->[1]->($msg);
		884
		885	push @{ $ns->{query_queue} }, @$queue;
		886
		887	if (@{ $ns->{query_queue} } == @$queue) {
		888	if (@$queue) {
		889	$ns->send_packet ($ns->{query_queue}[0][0]);
		890	} else {
		891	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		892	}
		893	}
		894	},
		895	);
		896
		897	=item $client->coro (\&cb)
		898
		899	Create a new coroutine, running the specified callback. The coroutine will
		900	be automatically cancelled when the client gets destroyed (e.g. on logout,
		901	or loss of connection).
		902
		903	=cut
		904
		905	sub cf::client::coro {
473	my ($self, $id, %msg) = @_;	906	my ($self, $cb) = @_;
474		907
475	$msg{msgid} = $id;	908	my $coro; $coro = async {
		909	eval {
		910	$cb->();
		911	};
		912	warn $@ if $@;
		913	delete $self->{_coro}{$coro+0};
		914	};
476		915
477	$self->send ("ext " . to_json \%msg);	916	$self->{_coro}{$coro+0} = $coro;
478	}	917	}
479		918
480	#############################################################################	919	cf::client->attach (
481	# map scripting support	920	on_destroy => sub {
		921	my ($ns) = @_;
482		922
		923	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		924	},
		925	);
		926
		927	=back
		928
		929
		930	=head2 SAFE SCRIPTING
		931
		932	Functions that provide a safe environment to compile and execute
		933	snippets of perl code without them endangering the safety of the server
		934	itself. Looping constructs, I/O operators and other built-in functionality
		935	is not available in the safe scripting environment, and the number of
		936	functions and methods that can be called is greatly reduced.
		937
		938	=cut
		939
483	our $safe = new Safe "ext";	940	our $safe = new Safe "safe";
484	our $safe_hole = new Safe::Hole;	941	our $safe_hole = new Safe::Hole;
485		942
486	$SIG{FPE} = 'IGNORE';	943	$SIG{FPE} = 'IGNORE';
487		944
488	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	945	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
489		946
490	# here we export the classes and methods available to script code	947	# here we export the classes and methods available to script code
491		948
		949	=pod
		950
		951	The following fucntions and emthods are available within a safe environment:
		952
		953	cf::object contr pay_amount pay_player map
		954	cf::object::player player
		955	cf::player peaceful
		956	cf::map trigger
		957
		958	=cut
		959
492	for (	960	for (
493	["cf::object" => qw(contr pay_amount pay_player)],	961	["cf::object" => qw(contr pay_amount pay_player map)],
494	["cf::object::player" => qw(player)],	962	["cf::object::player" => qw(player)],
495	["cf::player" => qw(peaceful)],	963	["cf::player" => qw(peaceful)],
		964	["cf::map" => qw(trigger)],
496	) {	965	) {
497	no strict 'refs';	966	no strict 'refs';
498	my ($pkg, @funs) = @$_;	967	my ($pkg, @funs) = @$_;
499	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	968	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
500	for @funs;	969	for @funs;
501	}	970	}
		971
		972	=over 4
		973
		974	=item @retval = safe_eval $code, [var => value, ...]
		975
		976	Compiled and executes the given perl code snippet. additional var/value
		977	pairs result in temporary local (my) scalar variables of the given name
		978	that are available in the code snippet. Example:
		979
		980	my $five = safe_eval '$first + $second', first => 1, second => 4;
		981
		982	=cut
502		983
503	sub safe_eval($;@) {	984	sub safe_eval($;@) {
504	my ($code, %vars) = @_;	985	my ($code, %vars) = @_;
505		986
506	my $qcode = $code;	987	my $qcode = $code;
507	$qcode =~ s/"/‟/g; # not allowed in #line filenames	988	$qcode =~ s/"/‟/g; # not allowed in #line filenames
508	$qcode =~ s/\n/\\n/g;	989	$qcode =~ s/\n/\\n/g;
509		990
510	local $_;	991	local $_;
511	local @ext::cf::_safe_eval_args = values %vars;	992	local @safe::cf::_safe_eval_args = values %vars;
512		993
513	$code =	994	my $eval =
514	"do {\n"	995	"do {\n"
515	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	996	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
516	. "#line 0 \"{$qcode}\"\n"	997	. "#line 0 \"{$qcode}\"\n"
517	. $code	998	. $code
518	. "\n}"	999	. "\n}"
519	;	1000	;
520		1001
521	sub_generation_inc;	1002	sub_generation_inc;
522	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	1003	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
523	sub_generation_inc;	1004	sub_generation_inc;
524		1005
		1006	if ($@) {
		1007	warn "$@";
		1008	warn "while executing safe code '$code'\n";
		1009	warn "with arguments " . (join " ", %vars) . "\n";
		1010	}
		1011
525	wantarray ? @res : $res[0]	1012	wantarray ? @res : $res[0]
526	}	1013	}
		1014
		1015	=item cf::register_script_function $function => $cb
		1016
		1017	Register a function that can be called from within map/npc scripts. The
		1018	function should be reasonably secure and should be put into a package name
		1019	like the extension.
		1020
		1021	Example: register a function that gets called whenever a map script calls
		1022	C<rent::overview>, as used by the C<rent> extension.
		1023
		1024	cf::register_script_function "rent::overview" => sub {
		1025	...
		1026	};
		1027
		1028	=cut
527		1029
528	sub register_script_function {	1030	sub register_script_function {
529	my ($fun, $cb) = @_;	1031	my ($fun, $cb) = @_;
530		1032
531	no strict 'refs';	1033	no strict 'refs';
532	*{"ext::$fun"} = $safe_hole->wrap ($cb);	1034	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1035	}
		1036
		1037	=back
		1038
		1039	=cut
		1040
		1041	#############################################################################
		1042
		1043	=head2 EXTENSION DATABASE SUPPORT
		1044
		1045	Crossfire maintains a very simple database for extension use. It can
		1046	currently store anything that can be serialised using Storable, which
		1047	excludes objects.
		1048
		1049	The parameter C<$family> should best start with the name of the extension
		1050	using it, it should be unique.
		1051
		1052	=over 4
		1053
		1054	=item $hashref = cf::db_get $family
		1055
		1056	Return a hashref for use by the extension C<$family>, which can be
		1057	modified. After modifications, you have to call C<cf::db_dirty> or
		1058	C<cf::db_sync>.
		1059
		1060	=item $value = cf::db_get $family => $key
		1061
		1062	Returns a single value from the database
		1063
		1064	=item cf::db_put $family => $hashref
		1065
		1066	Stores the given family hashref into the database. Updates are delayed, if
		1067	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1068
		1069	=item cf::db_put $family => $key => $value
		1070
		1071	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1072	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1073
		1074	=item cf::db_dirty
		1075
		1076	Marks the database as dirty, to be updated at a later time.
		1077
		1078	=item cf::db_sync
		1079
		1080	Immediately write the database to disk I<if it is dirty>.
		1081
		1082	=cut
		1083
		1084	our $DB;
		1085
		1086	{
		1087	my $path = cf::localdir . "/database.pst";
		1088
		1089	sub db_load() {
		1090	warn "loading database $path\n";#d# remove later
		1091	$DB = stat $path ? Storable::retrieve $path : { };
		1092	}
		1093
		1094	my $pid;
		1095
		1096	sub db_save() {
		1097	warn "saving database $path\n";#d# remove later
		1098	waitpid $pid, 0 if $pid;
		1099	if (0 == ($pid = fork)) {
		1100	$DB->{_meta}{version} = 1;
		1101	Storable::nstore $DB, "$path~";
		1102	rename "$path~", $path;
		1103	cf::_exit 0 if defined $pid;
		1104	}
		1105	}
		1106
		1107	my $dirty;
		1108
		1109	sub db_sync() {
		1110	db_save if $dirty;
		1111	undef $dirty;
		1112	}
		1113
		1114	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1115	db_sync;
		1116	});
		1117
		1118	sub db_dirty() {
		1119	$dirty = 1;
		1120	$idle->start;
		1121	}
		1122
		1123	sub db_get($;$) {
		1124	@_ >= 2
		1125	? $DB->{$_[0]}{$_[1]}
		1126	: ($DB->{$_[0]} ||= { })
		1127	}
		1128
		1129	sub db_put($$;$) {
		1130	if (@_ >= 3) {
		1131	$DB->{$_[0]}{$_[1]} = $_[2];
		1132	} else {
		1133	$DB->{$_[0]} = $_[1];
		1134	}
		1135	db_dirty;
		1136	}
		1137
		1138	cf::global->attach (
		1139	prio => 10000,
		1140	on_cleanup => sub {
		1141	db_sync;
		1142	},
		1143	);
533	}	1144	}
534		1145
535	#############################################################################	1146	#############################################################################
536	# the server's main()	1147	# the server's main()
537		1148
538	sub run {	1149	sub cfg_load {
		1150	open my $fh, "<:utf8", cf::confdir . "/config"
		1151	or return;
		1152
		1153	local $/;
		1154	*CFG = YAML::Syck::Load <$fh>;
		1155	}
		1156
		1157	sub main {
		1158	cfg_load;
		1159	db_load;
		1160	load_extensions;
539	Event::loop;	1161	Event::loop;
540	}	1162	}
541		1163
542	#############################################################################	1164	#############################################################################
543	# initialisation	1165	# initialisation
544		1166
		1167	sub _perl_reload(&) {
		1168	my ($msg) = @_;
		1169
		1170	$msg->("reloading...");
		1171
		1172	eval {
		1173	# cancel all watchers
		1174	for (Event::all_watchers) {
		1175	$_->cancel if $_->data & WF_AUTOCANCEL;
		1176	}
		1177
		1178	# unload all extensions
		1179	for (@exts) {
		1180	$msg->("unloading <$_>");
		1181	unload_extension $_;
		1182	}
		1183
		1184	# unload all modules loaded from $LIBDIR
		1185	while (my ($k, $v) = each %INC) {
		1186	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1187
		1188	$msg->("removing <$k>");
		1189	delete $INC{$k};
		1190
		1191	$k =~ s/\.pm$//;
		1192	$k =~ s/\//::/g;
		1193
		1194	if (my $cb = $k->can ("unload_module")) {
		1195	$cb->();
		1196	}
		1197
		1198	Symbol::delete_package $k;
		1199	}
		1200
		1201	# sync database to disk
		1202	cf::db_sync;
		1203
		1204	# get rid of safe::, as good as possible
		1205	Symbol::delete_package "safe::$_"
		1206	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1207
		1208	# remove register_script_function callbacks
		1209	# TODO
		1210
		1211	# unload cf.pm "a bit"
		1212	delete $INC{"cf.pm"};
		1213
		1214	# don't, removes xs symbols, too,
		1215	# and global variables created in xs
		1216	#Symbol::delete_package __PACKAGE__;
		1217
		1218	# reload cf.pm
		1219	$msg->("reloading cf.pm");
		1220	require cf;
		1221
		1222	# load config and database again
		1223	cf::cfg_load;
		1224	cf::db_load;
		1225
		1226	# load extensions
		1227	$msg->("load extensions");
		1228	cf::load_extensions;
		1229
		1230	# reattach attachments to objects
		1231	$msg->("reattach");
		1232	_global_reattach;
		1233	};
		1234	$msg->($@) if $@;
		1235
		1236	$msg->("reloaded");
		1237	};
		1238
		1239	sub perl_reload() {
		1240	_perl_reload {
		1241	warn $_[0];
		1242	print "$_[0]\n";
		1243	};
		1244	}
		1245
545	register "<global>", __PACKAGE__;	1246	register "<global>", __PACKAGE__;
546		1247
		1248	register_command "perl-reload" => sub {
		1249	my ($who, $arg) = @_;
		1250
		1251	if ($who->flag (FLAG_WIZ)) {
		1252	_perl_reload {
		1253	warn $_[0];
		1254	$who->message ($_[0]);
		1255	};
		1256	}
		1257	};
		1258
547	unshift @INC, $LIBDIR;	1259	unshift @INC, $LIBDIR;
548		1260
549	load_extensions;
550
551	$TICK_WATCHER = Event->timer (	1261	$TICK_WATCHER = Event->timer (
552	prio => 1,	1262	prio => 0,
553	at => $NEXT_TICK || 1,	1263	at => $NEXT_TICK || 1,
		1264	data => WF_AUTOCANCEL,
554	cb => sub {	1265	cb => sub {
555	cf::server_tick; # one server iteration	1266	cf::server_tick; # one server iteration
556		1267
557	my $NOW = Event::time;	1268	my $NOW = Event::time;
558	$NEXT_TICK += $TICK;	1269	$NEXT_TICK += $TICK;
559		1270
560	# if we are delayed by four ticks, skip them all	1271	# if we are delayed by four ticks or more, skip them all
561	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1272	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
562		1273
563	$TICK_WATCHER->at ($NEXT_TICK);	1274	$TICK_WATCHER->at ($NEXT_TICK);
564	$TICK_WATCHER->start;	1275	$TICK_WATCHER->start;
565	},	1276	},
566	);	1277	);
567		1278
		1279	IO::AIO::max_poll_time $TICK * 0.2;
		1280
		1281	Event->io (fd => IO::AIO::poll_fileno,
		1282	poll => 'r',
		1283	prio => 5,
		1284	data => WF_AUTOCANCEL,
		1285	cb => \&IO::AIO::poll_cb);
		1286
568	1	1287	1
569		1288

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