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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.136 by root, Fri Jan 5 01:06:28 2007 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 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
10	use Time::HiRes;	24	use Time::HiRes;
11	use Event;	25
12	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		27
14	use strict;	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
15		30
16	_reload_1;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
17		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
18	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
19	our @EVENT;	39	our @EVENT;
20	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		41
24	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	43	our $TICK_WATCHER;
26	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
		76
		77	#############################################################################
		78
		79	=head2 GLOBAL VARIABLES
		80
		81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
		91
		92	=item $cf::LIBDIR
		93
		94	The perl library directory, where extensions and cf-specific modules can
		95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
		100
		101	=item $cf::TICK
		102
		103	The interval between server ticks, in seconds.
		104
		105	=item %cf::CFG
		106
		107	Configuration for the server, loaded from C</etc/crossfire/config>, or
		108	from wherever your confdir points to.
		109
		110	=back
		111
		112	=cut
27		113
28	BEGIN {	114	BEGIN {
29	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
31	$msg .= "\n"	119	$msg .= "\n"
32	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
33		121
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
36	};	123	};
37	}	124	}
38		125
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
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';	131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		132
75	# we bless all objects into (empty) derived classes to force a method lookup	133	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	134	# 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)) {	135	for my $pkg (qw(
		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
78	no strict 'refs';	142	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	144	}
81		145
82	$Event::DIED = sub {	146	$Event::DIED = sub {
…		…
84	};	148	};
85		149
86	my %ext_pkg;	150	my %ext_pkg;
87	my @exts;	151	my @exts;
88	my @hook;	152	my @hook;
89	my %command;
90	my %extcmd;
91		153
92	#############################################################################	154	=head2 UTILITY FUNCTIONS
93	# utility functions	155
		156	=over 4
		157
		158	=cut
94		159
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	160	use JSON::Syck (); # TODO# replace by JSON::PC once working
		161
		162	=item $ref = cf::from_json $json
		163
		164	Converts a JSON string into the corresponding perl data structure.
		165
		166	=cut
96		167
97	sub from_json($) {	168	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	170	JSON::Syck::Load $_[0]
100	}	171	}
101		172
		173	=item $json = cf::to_json $ref
		174
		175	Converts a perl data structure into its JSON representation.
		176
		177	=cut
		178
102	sub to_json($) {	179	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	181	JSON::Syck::Dump $_[0]
105	}	182	}
106		183
		184	=item cf::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
		203	my ($key) = @_;
		204
		205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	=item cf::async { BLOCK }
		227
		228	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		229	error instead of exiting the server in case of a problem.
		230
		231	=cut
		232
		233	sub async(&) {
		234	my ($cb) = @_;
		235
		236	Coro::async {
		237	eval { $cb->() };
		238	warn $@ if $@;
		239	}
		240	}
		241
		242	sub freeze_mainloop {
		243	return unless $TICK_WATCHER->is_active;
		244
		245	my $guard = Coro::guard { $TICK_WATCHER->start };
		246	$TICK_WATCHER->stop;
		247	$guard
		248	}
		249
		250	=item cf::sync_job { BLOCK }
		251
		252	The design of crossfire+ requires that the main coro ($Coro::main) is
		253	always able to handle events or runnable, as crossfire+ is only partly
		254	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		255
		256	If it must be done, put the blocking parts into C<sync_job>. This will run
		257	the given BLOCK in another coroutine while waiting for the result. The
		258	server will be frozen during this time, so the block should either finish
		259	fast or be very important.
		260
		261	=cut
		262
		263	sub sync_job(&) {
		264	my ($job) = @_;
		265
		266	if ($Coro::current == $Coro::main) {
		267	# this is the main coro, too bad, we have to block
		268	# till the operation succeeds, freezing the server :/
		269
		270	# TODO: use suspend/resume instead
		271	# (but this is cancel-safe)
		272	my $freeze_guard = freeze_mainloop;
		273
		274	my $busy = 1;
		275	my @res;
		276
		277	(Coro::async {
		278	@res = eval { $job->() };
		279	warn $@ if $@;
		280	undef $busy;
		281	})->prio (Coro::PRIO_MAX);
		282
		283	while ($busy) {
		284	Coro::cede_notself;
		285	Event::one_event unless Coro::nready;
		286	}
		287
		288	wantarray ? @res : $res[0]
		289	} else {
		290	# we are in another coroutine, how wonderful, everything just works
		291
		292	$job->()
		293	}
		294	}
		295
		296	=item $coro = cf::coro { BLOCK }
		297
		298	Creates and returns a new coro. This coro is automcatially being canceled
		299	when the extension calling this is being unloaded.
		300
		301	=cut
		302
		303	sub coro(&) {
		304	my $cb = shift;
		305
		306	my $coro = &cf::async ($cb);
		307
		308	$coro->on_destroy (sub {
		309	delete $EXT_CORO{$coro+0};
		310	});
		311	$EXT_CORO{$coro+0} = $coro;
		312
		313	$coro
		314	}
		315
		316	sub write_runtime {
		317	my $runtime = cf::localdir . "/runtime";
		318
		319	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		320	or return;
		321
		322	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		323	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		324	and return;
		325
		326	aio_fsync $fh
		327	and return;
		328
		329	close $fh
		330	or return;
		331
		332	aio_rename "$runtime~", $runtime
		333	and return;
		334
		335	1
		336	}
		337
		338	=back
		339
		340	=cut
		341
107	#############################################################################	342	#############################################################################
108	# "new" plug-in system
109		343
		344	package cf::path;
		345
		346	sub new {
		347	my ($class, $path, $base) = @_;
		348
		349	$path = $path->as_string if ref $path;
		350
		351	my $self = bless { }, $class;
		352
		353	# {... are special paths that are not touched
		354	# ?xxx/... are special absolute paths
		355	# ?random/... random maps
		356	# /! non-realised random map exit
		357	# /... normal maps
		358	# ~/... per-player maps without a specific player (DO NOT USE)
		359	# ~user/... per-player map of a specific user
		360
		361	if ($path =~ /^{/) {
		362	# fine as it is
		363	} elsif ($path =~ s{^\?random/}{}) {
		364	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		365	$self->{random} = cf::from_json $data;
		366	} else {
		367	if ($path =~ s{^~([^/]+)?}{}) {
		368	$self->{user_rel} = 1;
		369
		370	if (defined $1) {
		371	$self->{user} = $1;
		372	} elsif ($base =~ m{^~([^/]+)/}) {
		373	$self->{user} = $1;
		374	} else {
		375	warn "cannot resolve user-relative path without user <$path,$base>\n";
		376	}
		377	} elsif ($path =~ /^\//) {
		378	# already absolute
		379	} else {
		380	$base =~ s{[^/]+/?$}{};
		381	return $class->new ("$base/$path");
		382	}
		383
		384	for ($path) {
		385	redo if s{/\.?/}{/};
		386	redo if s{/[^/]+/\.\./}{/};
		387	}
		388	}
		389
		390	$self->{path} = $path;
		391
		392	$self
		393	}
		394
		395	# the name / primary key / in-game path
		396	sub as_string {
		397	my ($self) = @_;
		398
		399	$self->{user_rel} ? "~$self->{user}$self->{path}"
		400	: $self->{random} ? "?random/$self->{path}"
		401	: $self->{path}
		402	}
		403
		404	# the displayed name, this is a one way mapping
		405	sub visible_name {
		406	my ($self) = @_;
		407
		408	# if (my $rmp = $self->{random}) {
		409	# # todo: be more intelligent about this
		410	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		411	# } else {
		412	$self->as_string
		413	# }
		414	}
		415
		416	# escape the /'s in the path
		417	sub _escaped_path {
		418	# ∕ is U+2215
		419	(my $path = $_[0]{path}) =~ s/\//∕/g;
		420	$path
		421	}
		422
		423	# the original (read-only) location
		424	sub load_path {
		425	my ($self) = @_;
		426
		427	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		428	}
		429
		430	# the temporary/swap location
		431	sub save_path {
		432	my ($self) = @_;
		433
		434	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		435	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		436	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		437	}
		438
		439	# the unique path, might be eq to save_path
		440	sub uniq_path {
		441	my ($self) = @_;
		442
		443	$self->{user_rel} || $self->{random}
		444	? undef
		445	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		446	}
		447
		448	# return random map parameters, or undef
		449	sub random_map_params {
		450	my ($self) = @_;
		451
		452	$self->{random}
		453	}
		454
		455	# this is somewhat ugly, but style maps do need special treatment
		456	sub is_style_map {
		457	$_[0]{path} =~ m{^/styles/}
		458	}
		459
		460	package cf;
		461
		462	#############################################################################
		463
		464	=head2 ATTACHABLE OBJECTS
		465
		466	Many objects in crossfire are so-called attachable objects. That means you can
		467	attach callbacks/event handlers (a collection of which is called an "attachment")
		468	to it. All such attachable objects support the following methods.
		469
		470	In the following description, CLASS can be any of C<global>, C<object>
		471	C<player>, C<client> or C<map> (i.e. the attachable objects in
		472	crossfire+).
		473
		474	=over 4
		475
110	=item $object->attach ($attachment, key => $value...)	476	=item $attachable->attach ($attachment, key => $value...)
111		477
112	Attach a pre-registered attachment to an object.	478	=item $attachable->detach ($attachment)
113		479
114	=item $player->attach ($attachment, key => $value...)	480	Attach/detach a pre-registered attachment to a specific object and give it
		481	the specified key/value pairs as arguments.
115		482
116	Attach a pre-registered attachment to a player.	483	Example, attach a minesweeper attachment to the given object, making it a
		484	10x10 minesweeper game:
117		485
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	486	$obj->attach (minesweeper => width => 10, height => 10);
119		487
120	Attach a pre-registered attachment to a map.	488	=item $bool = $attachable->attached ($name)
121		489
122	=item cf::attach_global ...	490	Checks wether the named attachment is currently attached to the object.
123		491
124	Attach handlers for global events.	492	=item cf::CLASS->attach ...
125		493
126	This and all following C<attach_*>-functions expect any number of the	494	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	495
		496	Define an anonymous attachment and attach it to all objects of the given
		497	CLASS. See the next function for an explanation of its arguments.
		498
		499	You can attach to global events by using the C<cf::global> class.
		500
		501	Example, log all player logins:
		502
		503	cf::player->attach (
		504	on_login => sub {
		505	my ($pl) = @_;
		506	...
		507	},
		508	);
		509
		510	Example, attach to the jeweler skill:
		511
		512	cf::object->attach (
		513	type => cf::SKILL,
		514	subtype => cf::SK_JEWELER,
		515	on_use_skill => sub {
		516	my ($sk, $ob, $part, $dir, $msg) = @_;
		517	...
		518	},
		519	);
		520
		521	=item cf::CLASS::attachment $name, ...
		522
		523	Register an attachment by C<$name> through which attachable objects of the
		524	given CLASS can refer to this attachment.
		525
		526	Some classes such as crossfire maps and objects can specify attachments
		527	that are attached at load/instantiate time, thus the need for a name.
		528
		529	These calls expect any number of the following handler/hook descriptions:
128		530
129	=over 4	531	=over 4
130		532
131	=item prio => $number	533	=item prio => $number
132		534
…		…
134	by another C<prio> setting). Lower priority handlers get executed	536	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	537	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	538	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	539	unless you know what you are doing.
138		540
		541	=item type => $type
		542
		543	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		544	given type of objects only (the additional parameter C<subtype> can be
		545	used to further limit to the given subtype).
		546
139	=item on_I<event> => \&cb	547	=item on_I<event> => \&cb
140		548
141	Call the given code reference whenever the named event happens (event is	549	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	550	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	551	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	560	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	561	object/class are recognised.
154		562
155	=back	563	=back
156		564
157	=item cf::attach_to_type $object_type, $subtype, ...	565	Example, define an attachment called "sockpuppet" that calls the given
		566	event handler when a monster attacks:
158		567
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	568	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	569	on_skill_attack => sub {
161	type.	570	my ($self, $victim) = @_;
		571	...
		572	}
		573	}
162		574
163	=item cf::attach_to_objects ...	575	=item $attachable->valid
164		576
165	Attach handlers to all objects. Do not use this except for debugging or	577	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	578	C-level object still exists. If you try to access an object that has no
167	the game.	579	valid C counterpart anymore you get an exception at runtime. This method
168		580	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	581	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		582
179	=cut	583	=cut
180		584
181	# the following variables are defined in .xs and must not be re-created	585	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	586	our @CB_GLOBAL = (); # registry for all global events
		587	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	588	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	589	our @CB_PLAYER = ();
		590	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	591	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	592	our @CB_MAP = ();
187		593
188	my %attachment;	594	my %attachment;
189		595
190	sub _attach_cb($\%$$$) {	596	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	597	my ($registry, $event, $prio, $cb) = @_;
192		598
193	use sort 'stable';	599	use sort 'stable';
194		600
195	$cb = [$prio, $cb];	601	$cb = [$prio, $cb];
196		602
197	@{$registry->[$event]} = sort	603	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	604	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	605	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	606	}
		607
		608	# hack
		609	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		610
204	# attach handles attaching event callbacks	611	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	612	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	613	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	614	sub _attach {
208	my ($registry, $klass, @arg) = @_;	615	my ($registry, $klass, @arg) = @_;
209		616
		617	my $object_type;
210	my $prio = 0;	618	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	619	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		620
		621	#TODO: get rid of this hack
		622	if ($attachable_klass{$klass}) {
		623	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		624	}
218		625
219	while (@arg) {	626	while (@arg) {
220	my $type = shift @arg;	627	my $type = shift @arg;
221		628
222	if ($type eq "prio") {	629	if ($type eq "prio") {
223	$prio = shift @arg;	630	$prio = shift @arg;
224		631
		632	} elsif ($type eq "type") {
		633	$object_type = shift @arg;
		634	$registry = $CB_TYPE[$object_type] ||= [];
		635
		636	} elsif ($type eq "subtype") {
		637	defined $object_type or Carp::croak "subtype specified without type";
		638	my $object_subtype = shift @arg;
		639	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		640
225	} elsif ($type eq "package") {	641	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	642	my $pkg = shift @arg;
227		643
228	while (my ($name, $id) = each %cb_id) {	644	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	645	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	646	_attach_cb $registry, $id, $prio, $cb;
231	}	647	}
232	}	648	}
233		649
234	} elsif (exists $cb_id{$type}) {	650	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	651	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		652
237	} elsif (ref $type) {	653	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	654	warn "attaching objects not supported, ignoring.\n";
239		655
240	} else {	656	} else {
241	shift @arg;	657	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	658	warn "attach argument '$type' not supported, ignoring.\n";
243	}	659	}
244	}	660	}
245
246	\%undo
247	}	661	}
248		662
249	sub _attach_attachment {	663	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	664	my ($obj, $name, %arg) = @_;
251		665
252	my $res;	666	return if exists $obj->{_attachment}{$name};
253		667
254	if (my $attach = $attachment{$name}) {	668	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	669	my $registry = $obj->registry;
256		670
257	for (@$attach) {	671	for (@$attach) {
258	my ($klass, @attach) = @$_;	672	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	673	_attach $registry, $klass, @attach;
260	}	674	}
261		675
262	$obj->{$name} = \%arg;	676	$obj->{$name} = \%arg;
263	} else {	677	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	678	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	679	}
266		680
267	$obj->{_attachment}{$name} = undef;	681	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	682	}
272		683
273	sub cf::object::attach {	684	sub cf::attachable::attach {
		685	if (ref $_[0]) {
		686	_object_attach @_;
		687	} else {
		688	_attach shift->_attach_registry, @_;
		689	}
		690	};
		691
		692	# all those should be optimised
		693	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	694	my ($obj, $name) = @_;
275		695
276	_attach_attachment $obj, $name, %arg;	696	if (ref $obj) {
277	}	697	delete $obj->{_attachment}{$name};
		698	reattach ($obj);
		699	} else {
		700	Carp::croak "cannot, currently, detach class attachments";
		701	}
		702	};
278		703
279	sub cf::player::attach {	704	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	705	my ($obj, $name) = @_;
281		706
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	707	exists $obj->{_attachment}{$name}
283	}	708	}
284		709
285	sub cf::map::attach {	710	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	711	eval "#line " . __LINE__ . " 'cf.pm'
		712	sub cf::\L$klass\E::_attach_registry {
		713	(\\\@CB_$klass, KLASS_$klass)
		714	}
287		715
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	716	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	717	my \$name = shift;
316		718
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	719	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		720	}
		721	";
		722	die if $@;
318	}	723	}
319		724
320	our $override;	725	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	726	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		727
…		…
336	for (@$callbacks) {	741	for (@$callbacks) {
337	eval { &{$_->[1]} };	742	eval { &{$_->[1]} };
338		743
339	if ($@) {	744	if ($@) {
340	warn "$@";	745	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	746	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	747	override;
343	}	748	}
344		749
345	return 1 if $override;	750	return 1 if $override;
346	}	751	}
347		752
348	0	753	0
349	}	754	}
		755
		756	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		757
		758	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		759
		760	Generate an object-specific event with the given arguments.
		761
		762	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		763	removed in future versions), and there is no public API to access override
		764	results (if you must, access C<@cf::invoke_results> directly).
		765
		766	=back
		767
		768	=cut
350		769
351	#############################################################################	770	#############################################################################
352	# object support	771	# object support
353		772
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	773	sub reattach {
		774	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	775	my ($obj) = @_;
		776
369	my $registry = $obj->registry;	777	my $registry = $obj->registry;
370		778
371	@$registry = ();	779	@$registry = ();
372		780
373	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	781	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		782
375	for my $name (keys %{ $obj->{_attachment} || {} }) {	783	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	784	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	785	for (@$attach) {
378	my ($klass, @attach) = @$_;	786	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	787	_attach $registry, $klass, @attach;
380	}	788	}
381	} else {	789	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	790	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	791	}
384	}	792	}
385	}	793	}
386		794
387	sub object_freezer_save {	795	cf::attachable->attach (
388	my ($filename, $objs) = @_;
389
390	if (@$objs) {
391	open my $fh, ">:raw", "$filename.pst~";
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;
394	chmod SAVE_MODE, "$filename.pst~";
395	rename "$filename.pst~", "$filename.pst";
396	} else {
397	unlink "$filename.pst";
398	}
399
400	chmod SAVE_MODE, "$filename~";
401	rename "$filename~", $filename;
402	}
403
404	sub object_thawer_load {
405	my ($filename) = @_;
406
407	open my $fh, "<:raw:perlio", "$filename.pst"
408	or return;
409
410	eval { local $/; (Storable::thaw <$fh>)->{objs} }
411	}
412
413	attach_to_objects
414	prio => -1000000,	796	prio => -1000000,
		797	on_instantiate => sub {
		798	my ($obj, $data) = @_;
		799
		800	$data = from_json $data;
		801
		802	for (@$data) {
		803	my ($name, $args) = @$_;
		804
		805	$obj->attach ($name, %{$args || {} });
		806	}
		807	},
		808	on_reattach => \&reattach,
415	on_clone => sub {	809	on_clone => sub {
416	my ($src, $dst) = @_;	810	my ($src, $dst) = @_;
417		811
418	@{$dst->registry} = @{$src->registry};	812	@{$dst->registry} = @{$src->registry};
419		813
420	%$dst = %$src;	814	%$dst = %$src;
421		815
422	%{$dst->{_attachment}} = %{$src->{_attachment}}	816	%{$dst->{_attachment}} = %{$src->{_attachment}}
423	if exists $src->{_attachment};	817	if exists $src->{_attachment};
424	},	818	},
425	;	819	);
		820
		821	sub object_freezer_save {
		822	my ($filename, $rdata, $objs) = @_;
		823
		824	sync_job {
		825	if (length $$rdata) {
		826	warn sprintf "saving %s (%d,%d)\n",
		827	$filename, length $$rdata, scalar @$objs;
		828
		829	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		830	chmod SAVE_MODE, $fh;
		831	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		832	aio_fsync $fh;
		833	close $fh;
		834
		835	if (@$objs) {
		836	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		837	chmod SAVE_MODE, $fh;
		838	my $data = Storable::nfreeze { version => 1, objs => $objs };
		839	aio_write $fh, 0, (length $data), $data, 0;
		840	aio_fsync $fh;
		841	close $fh;
		842	aio_rename "$filename.pst~", "$filename.pst";
		843	}
		844	} else {
		845	aio_unlink "$filename.pst";
		846	}
		847
		848	aio_rename "$filename~", $filename;
		849	} else {
		850	warn "FATAL: $filename~: $!\n";
		851	}
		852	} else {
		853	aio_unlink $filename;
		854	aio_unlink "$filename.pst";
		855	}
		856	}
		857	}
		858
		859	sub object_freezer_as_string {
		860	my ($rdata, $objs) = @_;
		861
		862	use Data::Dumper;
		863
		864	$$rdata . Dumper $objs
		865	}
		866
		867	sub object_thawer_load {
		868	my ($filename) = @_;
		869
		870	my ($data, $av);
		871
		872	(aio_load $filename, $data) >= 0
		873	or return;
		874
		875	unless (aio_stat "$filename.pst") {
		876	(aio_load "$filename.pst", $av) >= 0
		877	or return;
		878	$av = eval { (Storable::thaw $av)->{objs} };
		879	}
		880
		881	warn sprintf "loading %s (%d)\n",
		882	$filename, length $data, scalar @{$av || []};#d#
		883	return ($data, $av);
		884	}
426		885
427	#############################################################################	886	#############################################################################
428	# old plug-in events	887	# command handling &c
429		888
430	sub inject_event {	889	=item cf::register_command $name => \&callback($ob,$args);
431	my $extension = shift;
432	my $event_code = shift;
433		890
434	my $cb = $hook[$event_code]{$extension}	891	Register a callback for execution when the client sends the user command
435	or return;	892	$name.
436		893
437	&$cb	894	=cut
438	}
439
440	sub inject_global_event {
441	my $event = shift;
442
443	my $cb = $hook[$event]
444	or return;
445
446	List::Util::max map &$_, values %$cb
447	}
448
449	sub inject_command {
450	my ($name, $obj, $params) = @_;
451
452	for my $cmd (@{ $command{$name} }) {
453	$cmd->[1]->($obj, $params);
454	}
455
456	-1
457	}
458		895
459	sub register_command {	896	sub register_command {
460	my ($name, $time, $cb) = @_;	897	my ($name, $cb) = @_;
461		898
462	my $caller = caller;	899	my $caller = caller;
463	#warn "registering command '$name/$time' to '$caller'";	900	#warn "registering command '$name/$time' to '$caller'";
464		901
465	push @{ $command{$name} }, [$time, $cb, $caller];	902	push @{ $COMMAND{$name} }, [$caller, $cb];
466	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
467	}	903	}
		904
		905	=item cf::register_extcmd $name => \&callback($pl,$packet);
		906
		907	Register a callbackf ro execution when the client sends an extcmd packet.
		908
		909	If the callback returns something, it is sent back as if reply was being
		910	called.
		911
		912	=cut
468		913
469	sub register_extcmd {	914	sub register_extcmd {
470	my ($name, $cb) = @_;	915	my ($name, $cb) = @_;
471		916
472	my $caller = caller;	917	my $caller = caller;
473	#warn "registering extcmd '$name' to '$caller'";	918	#warn "registering extcmd '$name' to '$caller'";
474		919
475	$extcmd{$name} = [$cb, $caller];	920	$EXTCMD{$name} = [$cb, $caller];
476	}	921	}
		922
		923	cf::player->attach (
		924	on_command => sub {
		925	my ($pl, $name, $params) = @_;
		926
		927	my $cb = $COMMAND{$name}
		928	or return;
		929
		930	for my $cmd (@$cb) {
		931	$cmd->[1]->($pl->ob, $params);
		932	}
		933
		934	cf::override;
		935	},
		936	on_extcmd => sub {
		937	my ($pl, $buf) = @_;
		938
		939	my $msg = eval { from_json $buf };
		940
		941	if (ref $msg) {
		942	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		943	if (my %reply = $cb->[0]->($pl, $msg)) {
		944	$pl->ext_reply ($msg->{msgid}, %reply);
		945	}
		946	}
		947	} else {
		948	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		949	}
		950
		951	cf::override;
		952	},
		953	);
477		954
478	sub register {	955	sub register {
479	my ($base, $pkg) = @_;	956	my ($base, $pkg) = @_;
480		957
481	#TODO	958	#TODO
…		…
500	. "#line 1 \"$path\"\n{\n"	977	. "#line 1 \"$path\"\n{\n"
501	. (do { local $/; <$fh> })	978	. (do { local $/; <$fh> })
502	. "\n};\n1";	979	. "\n};\n1";
503		980
504	eval $source	981	eval $source
505	or die "$path: $@";	982	or die $@ ? "$path: $@\n"
		983	: "extension disabled.\n";
506		984
507	push @exts, $pkg;	985	push @exts, $pkg;
508	$ext_pkg{$base} = $pkg;	986	$ext_pkg{$base} = $pkg;
509		987
510	# no strict 'refs';	988	# no strict 'refs';
…		…
523	# for my $idx (0 .. $#PLUGIN_EVENT) {	1001	# for my $idx (0 .. $#PLUGIN_EVENT) {
524	# delete $hook[$idx]{$pkg};	1002	# delete $hook[$idx]{$pkg};
525	# }	1003	# }
526		1004
527	# remove commands	1005	# remove commands
528	for my $name (keys %command) {	1006	for my $name (keys %COMMAND) {
529	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1007	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
530		1008
531	if (@cb) {	1009	if (@cb) {
532	$command{$name} = \@cb;	1010	$COMMAND{$name} = \@cb;
533	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
534	} else {	1011	} else {
535	delete $command{$name};
536	delete $COMMAND{"$name\000"};	1012	delete $COMMAND{$name};
537	}	1013	}
538	}	1014	}
539		1015
540	# remove extcmds	1016	# remove extcmds
541	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1017	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
542	delete $extcmd{$name};	1018	delete $EXTCMD{$name};
543	}	1019	}
544		1020
545	if (my $cb = $pkg->can ("unload")) {	1021	if (my $cb = $pkg->can ("unload")) {
546	eval {	1022	eval {
547	$cb->($pkg);	1023	$cb->($pkg);
…		…
551		1027
552	Symbol::delete_package $pkg;	1028	Symbol::delete_package $pkg;
553	}	1029	}
554		1030
555	sub load_extensions {	1031	sub load_extensions {
556	my $LIBDIR = maps_directory "perl";
557
558	for my $ext (<$LIBDIR/*.ext>) {	1032	for my $ext (<$LIBDIR/*.ext>) {
559	next unless -r $ext;	1033	next unless -r $ext;
560	eval {	1034	eval {
561	load_extension $ext;	1035	load_extension $ext;
562	1	1036	1
563	} or warn "$ext not loaded: $@";	1037	} or warn "$ext not loaded: $@";
564	}	1038	}
565	}	1039	}
566		1040
567	sub _perl_reload(&) {
568	my ($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
640	#############################################################################
641	# extcmd framework, basically convert ext <msg>
642	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643
644	attach_to_players
645	on_extcmd => sub {
646	my ($pl, $buf) = @_;
647
648	my $msg = eval { from_json $buf };
649
650	if (ref $msg) {
651	if (my $cb = $extcmd{$msg->{msgtype}}) {
652	if (my %reply = $cb->[0]->($pl, $msg)) {
653	$pl->ext_reply ($msg->{msgid}, %reply);
654	}
655	}
656	} else {
657	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
658	}
659
660	cf::override;
661	},
662	;
663
664	#############################################################################	1041	#############################################################################
665	# load/save/clean perl data associated with a map	1042	# load/save/clean perl data associated with a map
666		1043
667	*cf::mapsupport::on_clean = sub {	1044	*cf::mapsupport::on_clean = sub {
668	my ($map) = @_;	1045	my ($map) = @_;
…		…
671	defined $path or return;	1048	defined $path or return;
672		1049
673	unlink "$path.pst";	1050	unlink "$path.pst";
674	};	1051	};
675		1052
676	# old style persistent data, TODO: remove #d#
677	*cf::mapsupport::on_swapin =
678	*cf::mapsupport::on_load = sub {
679	my ($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	$map->invoke (EVENT_MAP_UPGRADE);
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	1053	cf::map->attach (prio => -10000, package => cf::mapsupport::);
697		1054
698	#############################################################################	1055	#############################################################################
699	# load/save perl data associated with player->ob objects	1056	# load/save perl data associated with player->ob objects
700		1057
701	sub all_objects(@) {	1058	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_	1059	@_, map all_objects ($_->inv), @_
703	}	1060	}
704		1061
705	attach_to_players	1062	# TODO: compatibility cruft, remove when no longer needed
		1063	cf::player->attach (
706	on_load => sub {	1064	on_load => sub {
707	my ($pl, $path) = @_;	1065	my ($pl, $path) = @_;
708		1066
709	for my $o (all_objects $pl->ob) {	1067	for my $o (all_objects $pl->ob) {
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1068	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
712		1070
713	%$o = %{ Storable::thaw pack "H*", $value };	1071	%$o = %{ Storable::thaw pack "H*", $value };
714	}	1072	}
715	}	1073	}
716	},	1074	},
717	;	1075	);
718		1076
719	#############################################################################	1077	#############################################################################
720	# core extensions - in perl	1078
		1079	=head2 CORE EXTENSIONS
		1080
		1081	Functions and methods that extend core crossfire objects.
		1082
		1083	=head3 cf::player
		1084
		1085	=over 4
721		1086
722	=item cf::player::exists $login	1087	=item cf::player::exists $login
723		1088
724	Returns true when the given account exists.	1089	Returns true when the given account exists.
725		1090
…		…
728	sub cf::player::exists($) {	1093	sub cf::player::exists($) {
729	cf::player::find $_[0]	1094	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1095	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	1096	}
732		1097
		1098	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1099
		1100	Sends an ext reply to the player.
		1101
		1102	=cut
		1103
		1104	sub cf::player::ext_reply($$$%) {
		1105	my ($self, $id, %msg) = @_;
		1106
		1107	$msg{msgid} = $id;
		1108
		1109	$self->send ("ext " . to_json \%msg);
		1110	}
		1111
		1112	=back
		1113
		1114
		1115	=head3 cf::map
		1116
		1117	=over 4
		1118
		1119	=cut
		1120
		1121	package cf::map;
		1122
		1123	use Fcntl;
		1124	use Coro::AIO;
		1125
		1126	our $MAX_RESET = 3600;
		1127	our $DEFAULT_RESET = 3000;
		1128
		1129	sub generate_random_map {
		1130	my ($path, $rmp) = @_;
		1131
		1132	# mit "rum" bekleckern, nicht
		1133	cf::map::_create_random_map
		1134	$path,
		1135	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1136	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1137	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1138	$rmp->{exit_on_final_map},
		1139	$rmp->{xsize}, $rmp->{ysize},
		1140	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1141	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1142	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1143	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1144	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1145	(cf::region::find $rmp->{region})
		1146	}
		1147
		1148	# and all this just because we cannot iterate over
		1149	# all maps in C++...
		1150	sub change_all_map_light {
		1151	my ($change) = @_;
		1152
		1153	$_->change_map_light ($change)
		1154	for grep $_->outdoor, values %cf::MAP;
		1155	}
		1156
		1157	sub try_load_header($) {
		1158	my ($path) = @_;
		1159
		1160	utf8::encode $path;
		1161	aio_open $path, O_RDONLY, 0
		1162	or return;
		1163
		1164	my $map = cf::map::new
		1165	or return;
		1166
		1167	# for better error messages only, will be overwritten
		1168	$map->path ($path);
		1169
		1170	$map->load_header ($path)
		1171	or return;
		1172
		1173	$map->{load_path} = $path;
		1174
		1175	$map
		1176	}
		1177
		1178	sub find;
		1179	sub find {
		1180	my ($path, $origin) = @_;
		1181
		1182	#warn "find<$path,$origin>\n";#d#
		1183
		1184	$path = new cf::path $path, $origin && $origin->path;
		1185	my $key = $path->as_string;
		1186
		1187	cf::lock_wait "map_find:$key";
		1188
		1189	$cf::MAP{$key} || do {
		1190	my $guard = cf::lock_acquire "map_find:$key";
		1191
		1192	# do it the slow way
		1193	my $map = try_load_header $path->save_path;
		1194
		1195	Coro::cede;
		1196
		1197	if ($map) {
		1198	$map->last_access ((delete $map->{last_access})
		1199	|| $cf::RUNTIME); #d#
		1200	# safety
		1201	$map->{instantiate_time} = $cf::RUNTIME
		1202	if $map->{instantiate_time} > $cf::RUNTIME;
		1203	} else {
		1204	if (my $rmp = $path->random_map_params) {
		1205	$map = generate_random_map $key, $rmp;
		1206	} else {
		1207	$map = try_load_header $path->load_path;
		1208	}
		1209
		1210	$map or return;
		1211
		1212	$map->{load_original} = 1;
		1213	$map->{instantiate_time} = $cf::RUNTIME;
		1214	$map->last_access ($cf::RUNTIME);
		1215	$map->instantiate;
		1216
		1217	# per-player maps become, after loading, normal maps
		1218	$map->per_player (0) if $path->{user_rel};
		1219	}
		1220
		1221	$map->path ($key);
		1222	$map->{path} = $path;
		1223	$map->{last_save} = $cf::RUNTIME;
		1224
		1225	Coro::cede;
		1226
		1227	if ($map->should_reset) {
		1228	$map->reset;
		1229	undef $guard;
		1230	$map = find $path
		1231	or return;
		1232	}
		1233
		1234	$cf::MAP{$key} = $map
		1235	}
		1236	}
		1237
		1238	sub load {
		1239	my ($self) = @_;
		1240
		1241	my $path = $self->{path};
		1242	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1243
		1244	return if $self->in_memory != cf::MAP_SWAPPED;
		1245
		1246	$self->in_memory (cf::MAP_LOADING);
		1247
		1248	$self->alloc;
		1249	$self->load_objects ($self->{load_path}, 1)
		1250	or return;
		1251
		1252	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1253	if delete $self->{load_original};
		1254
		1255	if (my $uniq = $path->uniq_path) {
		1256	utf8::encode $uniq;
		1257	if (aio_open $uniq, O_RDONLY, 0) {
		1258	$self->clear_unique_items;
		1259	$self->load_objects ($uniq, 0);
		1260	}
		1261	}
		1262
		1263	Coro::cede;
		1264
		1265	# now do the right thing for maps
		1266	$self->link_multipart_objects;
		1267
		1268	if ($self->{path}->is_style_map) {
		1269	$self->{deny_save} = 1;
		1270	$self->{deny_reset} = 1;
		1271	} else {
		1272	$self->fix_auto_apply;
		1273	$self->decay_objects;
		1274	$self->update_buttons;
		1275	$self->set_darkness_map;
		1276	$self->difficulty ($self->estimate_difficulty)
		1277	unless $self->difficulty;
		1278	$self->activate;
		1279	}
		1280
		1281	Coro::cede;
		1282
		1283	$self->in_memory (cf::MAP_IN_MEMORY);
		1284	}
		1285
		1286	sub find_sync {
		1287	my ($path, $origin) = @_;
		1288
		1289	cf::sync_job { cf::map::find $path, $origin }
		1290	}
		1291
		1292	sub do_load_sync {
		1293	my ($map) = @_;
		1294
		1295	cf::sync_job { $map->load };
		1296	}
		1297
		1298	sub save {
		1299	my ($self) = @_;
		1300
		1301	$self->{last_save} = $cf::RUNTIME;
		1302
		1303	return unless $self->dirty;
		1304
		1305	my $save = $self->{path}->save_path; utf8::encode $save;
		1306	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1307
		1308	$self->{load_path} = $save;
		1309
		1310	return if $self->{deny_save};
		1311
		1312	local $self->{last_access} = $self->last_access;#d#
		1313
		1314	if ($uniq) {
		1315	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1316	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1317	} else {
		1318	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1319	}
		1320	}
		1321
		1322	sub swap_out {
		1323	my ($self) = @_;
		1324
		1325	# save first because save cedes
		1326	$self->save;
		1327
		1328	return if $self->players;
		1329	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1330	return if $self->{deny_save};
		1331
		1332	$self->clear;
		1333	$self->in_memory (cf::MAP_SWAPPED);
		1334	}
		1335
		1336	sub reset_at {
		1337	my ($self) = @_;
		1338
		1339	# TODO: safety, remove and allow resettable per-player maps
		1340	return 1e99 if $self->{path}{user_rel};
		1341	return 1e99 if $self->{deny_reset};
		1342
		1343	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1344	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1345
		1346	$time + $to
		1347	}
		1348
		1349	sub should_reset {
		1350	my ($self) = @_;
		1351
		1352	$self->reset_at <= $cf::RUNTIME
		1353	}
		1354
		1355	sub unlink_save {
		1356	my ($self) = @_;
		1357
		1358	utf8::encode (my $save = $self->{path}->save_path);
		1359	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1360	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1361	}
		1362
		1363	sub rename {
		1364	my ($self, $new_path) = @_;
		1365
		1366	$self->unlink_save;
		1367
		1368	delete $cf::MAP{$self->path};
		1369	$self->{path} = new cf::path $new_path;
		1370	$self->path ($self->{path}->as_string);
		1371	$cf::MAP{$self->path} = $self;
		1372
		1373	$self->save;
		1374	}
		1375
		1376	sub reset {
		1377	my ($self) = @_;
		1378
		1379	return if $self->players;
		1380	return if $self->{path}{user_rel};#d#
		1381
		1382	warn "resetting map ", $self->path;#d#
		1383
		1384	delete $cf::MAP{$self->path};
		1385
		1386	$_->clear_links_to ($self) for values %cf::MAP;
		1387
		1388	$self->unlink_save;
		1389	$self->destroy;
		1390	}
		1391
		1392	my $nuke_counter = "aaaa";
		1393
		1394	sub nuke {
		1395	my ($self) = @_;
		1396
		1397	$self->{deny_save} = 1;
		1398	$self->reset_timeout (1);
		1399	$self->rename ("{nuke}/" . ($nuke_counter++));
		1400	$self->reset; # polite request, might not happen
		1401	}
		1402
		1403	sub customise_for {
		1404	my ($map, $ob) = @_;
		1405
		1406	if ($map->per_player) {
		1407	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1408	}
		1409
		1410	$map
		1411	}
		1412
		1413	sub emergency_save {
		1414	my $freeze_guard = cf::freeze_mainloop;
		1415
		1416	warn "enter emergency map save\n";
		1417
		1418	cf::sync_job {
		1419	warn "begin emergency map save\n";
		1420	$_->save for values %cf::MAP;
		1421	};
		1422
		1423	warn "end emergency map save\n";
		1424	}
		1425
		1426	package cf;
		1427
		1428	=back
		1429
		1430
		1431	=head3 cf::object::player
		1432
		1433	=over 4
		1434
733	=item $player->reply ($npc, $msg[, $flags])	1435	=item $player_object->reply ($npc, $msg[, $flags])
734		1436
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1437	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	1438	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1439	dialogue with the given NPC character.
738		1440
739	=cut	1441	=cut
740		1442
741	# rough implementation of a future "reply" method that works	1443	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1444	# with dialog boxes.
		1445	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1446	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1447	my ($self, $npc, $msg, $flags) = @_;
745		1448
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1449	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1450
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1454	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1455	$self->message ($msg, $flags);
753	}	1456	}
754	}	1457	}
755		1458
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1459	=item $player_object->may ("access")
757		1460
758	Sends an ext reply to the player.	1461	Returns wether the given player is authorized to access resource "access"
		1462	(e.g. "command_wizcast").
759		1463
760	=cut	1464	=cut
761		1465
762	sub cf::player::ext_reply($$$%) {	1466	sub cf::object::player::may {
		1467	my ($self, $access) = @_;
		1468
		1469	$self->flag (cf::FLAG_WIZ) ||
		1470	(ref $cf::CFG{"may_$access"}
		1471	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1472	: $cf::CFG{"may_$access"})
		1473	}
		1474
		1475	=item $player_object->enter_link
		1476
		1477	Freezes the player and moves him/her to a special map (C<{link}>).
		1478
		1479	The player should be reaosnably safe there for short amounts of time. You
		1480	I<MUST> call C<leave_link> as soon as possible, though.
		1481
		1482	=item $player_object->leave_link ($map, $x, $y)
		1483
		1484	Moves the player out of the specila link map onto the given map. If the
		1485	map is not valid (or omitted), the player will be moved back to the
		1486	location he/she was before the call to C<enter_link>, or, if that fails,
		1487	to the emergency map position.
		1488
		1489	Might block.
		1490
		1491	=cut
		1492
		1493	sub cf::object::player::enter_link {
		1494	my ($self) = @_;
		1495
		1496	$self->deactivate_recursive;
		1497
		1498	return if $self->map == $LINK_MAP;
		1499
		1500	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1501	if $self->map;
		1502
		1503	$self->enter_map ($LINK_MAP, 20, 20);
		1504	}
		1505
		1506	sub cf::object::player::leave_link {
		1507	my ($self, $map, $x, $y) = @_;
		1508
		1509	my $link_pos = delete $self->{_link_pos};
		1510
		1511	unless ($map) {
		1512	# restore original map position
		1513	($map, $x, $y) = @{ $link_pos || [] };
		1514	$map = cf::map::find $map;
		1515
		1516	unless ($map) {
		1517	($map, $x, $y) = @$EMERGENCY_POSITION;
		1518	$map = cf::map::find $map
		1519	or die "FATAL: cannot load emergency map\n";
		1520	}
		1521	}
		1522
		1523	($x, $y) = (-1, -1)
		1524	unless (defined $x) && (defined $y);
		1525
		1526	# use -1 or undef as default coordinates, not 0, 0
		1527	($x, $y) = ($map->enter_x, $map->enter_y)
		1528	if $x <=0 && $y <= 0;
		1529
		1530	$map->load;
		1531
		1532	$self->activate_recursive;
		1533	$self->enter_map ($map, $x, $y);
		1534	}
		1535
		1536	cf::player->attach (
		1537	on_logout => sub {
		1538	my ($pl) = @_;
		1539
		1540	# abort map switching before logout
		1541	if ($pl->ob->{_link_pos}) {
		1542	cf::sync_job {
		1543	$pl->ob->leave_link
		1544	};
		1545	}
		1546	},
		1547	on_login => sub {
		1548	my ($pl) = @_;
		1549
		1550	# try to abort aborted map switching on player login :)
		1551	# should happen only on crashes
		1552	if ($pl->ob->{_link_pos}) {
		1553	$pl->ob->enter_link;
		1554	cf::async {
		1555	# we need this sleep as the login has a concurrent enter_exit running
		1556	# and this sleep increases chances of the player not ending up in scorn
		1557	Coro::Timer::sleep 1;
		1558	$pl->ob->leave_link;
		1559	};
		1560	}
		1561	},
		1562	);
		1563
		1564	=item $player_object->goto ($path, $x, $y)
		1565
		1566	=cut
		1567
		1568	sub cf::object::player::goto {
		1569	my ($self, $path, $x, $y) = @_;
		1570
		1571	$self->enter_link;
		1572
		1573	(cf::async {
		1574	$path = new cf::path $path;
		1575
		1576	my $map = cf::map::find $path->as_string;
		1577	$map = $map->customise_for ($self) if $map;
		1578
		1579	# warn "entering ", $map->path, " at ($x, $y)\n"
		1580	# if $map;
		1581
		1582	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1583
		1584	$self->leave_link ($map, $x, $y);
		1585	})->prio (1);
		1586	}
		1587
		1588	=item $player_object->enter_exit ($exit_object)
		1589
		1590	=cut
		1591
		1592	sub parse_random_map_params {
		1593	my ($spec) = @_;
		1594
		1595	my $rmp = { # defaults
		1596	xsize => 10,
		1597	ysize => 10,
		1598	};
		1599
		1600	for (split /\n/, $spec) {
		1601	my ($k, $v) = split /\s+/, $_, 2;
		1602
		1603	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1604	}
		1605
		1606	$rmp
		1607	}
		1608
		1609	sub prepare_random_map {
		1610	my ($exit) = @_;
		1611
		1612	# all this does is basically replace the /! path by
		1613	# a new random map path (?random/...) with a seed
		1614	# that depends on the exit object
		1615
		1616	my $rmp = parse_random_map_params $exit->msg;
		1617
		1618	if ($exit->map) {
		1619	$rmp->{region} = $exit->map->region_name;
		1620	$rmp->{origin_map} = $exit->map->path;
		1621	$rmp->{origin_x} = $exit->x;
		1622	$rmp->{origin_y} = $exit->y;
		1623	}
		1624
		1625	$rmp->{random_seed} ||= $exit->random_seed;
		1626
		1627	my $data = cf::to_json $rmp;
		1628	my $md5 = Digest::MD5::md5_hex $data;
		1629
		1630	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1631	aio_write $fh, 0, (length $data), $data, 0;
		1632
		1633	$exit->slaying ("?random/$md5");
		1634	$exit->msg (undef);
		1635	}
		1636	}
		1637
		1638	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1639	my ($self, $exit) = @_;
764		1640
765	$msg{msgid} = $id;	1641	return unless $self->type == cf::PLAYER;
766		1642
767	$self->send ("ext " . to_json \%msg);	1643	$self->enter_link;
768	}
769		1644
770	#############################################################################	1645	(cf::async {
771	# map scripting support	1646	$self->deactivate_recursive; # just to be sure
		1647	unless (eval {
		1648	prepare_random_map $exit
		1649	if $exit->slaying eq "/!";
		1650
		1651	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1652	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1653
		1654	1;
		1655	}) {
		1656	$self->message ("Something went wrong deep within the crossfire server. "
		1657	. "I'll try to bring you back to the map you were before. "
		1658	. "Please report this to the dungeon master",
		1659	cf::NDI_UNIQUE | cf::NDI_RED);
		1660
		1661	warn "ERROR in enter_exit: $@";
		1662	$self->leave_link;
		1663	}
		1664	})->prio (1);
		1665	}
		1666
		1667	=head3 cf::client
		1668
		1669	=over 4
		1670
		1671	=item $client->send_drawinfo ($text, $flags)
		1672
		1673	Sends a drawinfo packet to the client. Circumvents output buffering so
		1674	should not be used under normal circumstances.
		1675
		1676	=cut
		1677
		1678	sub cf::client::send_drawinfo {
		1679	my ($self, $text, $flags) = @_;
		1680
		1681	utf8::encode $text;
		1682	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1683	}
		1684
		1685
		1686	=item $success = $client->query ($flags, "text", \&cb)
		1687
		1688	Queues a query to the client, calling the given callback with
		1689	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1690	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1691
		1692	Queries can fail, so check the return code. Or don't, as queries will become
		1693	reliable at some point in the future.
		1694
		1695	=cut
		1696
		1697	sub cf::client::query {
		1698	my ($self, $flags, $text, $cb) = @_;
		1699
		1700	return unless $self->state == ST_PLAYING
		1701	|| $self->state == ST_SETUP
		1702	|| $self->state == ST_CUSTOM;
		1703
		1704	$self->state (ST_CUSTOM);
		1705
		1706	utf8::encode $text;
		1707	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1708
		1709	$self->send_packet ($self->{query_queue}[0][0])
		1710	if @{ $self->{query_queue} } == 1;
		1711	}
		1712
		1713	cf::client->attach (
		1714	on_reply => sub {
		1715	my ($ns, $msg) = @_;
		1716
		1717	# this weird shuffling is so that direct followup queries
		1718	# get handled first
		1719	my $queue = delete $ns->{query_queue}
		1720	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1721
		1722	(shift @$queue)->[1]->($msg);
		1723
		1724	push @{ $ns->{query_queue} }, @$queue;
		1725
		1726	if (@{ $ns->{query_queue} } == @$queue) {
		1727	if (@$queue) {
		1728	$ns->send_packet ($ns->{query_queue}[0][0]);
		1729	} else {
		1730	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1731	}
		1732	}
		1733	},
		1734	);
		1735
		1736	=item $client->coro (\&cb)
		1737
		1738	Create a new coroutine, running the specified callback. The coroutine will
		1739	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1740	or loss of connection).
		1741
		1742	=cut
		1743
		1744	sub cf::client::coro {
		1745	my ($self, $cb) = @_;
		1746
		1747	my $coro = &cf::async ($cb);
		1748
		1749	$coro->on_destroy (sub {
		1750	delete $self->{_coro}{$coro+0};
		1751	});
		1752
		1753	$self->{_coro}{$coro+0} = $coro;
		1754
		1755	$coro
		1756	}
		1757
		1758	cf::client->attach (
		1759	on_destroy => sub {
		1760	my ($ns) = @_;
		1761
		1762	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1763	},
		1764	);
		1765
		1766	=back
		1767
		1768
		1769	=head2 SAFE SCRIPTING
		1770
		1771	Functions that provide a safe environment to compile and execute
		1772	snippets of perl code without them endangering the safety of the server
		1773	itself. Looping constructs, I/O operators and other built-in functionality
		1774	is not available in the safe scripting environment, and the number of
		1775	functions and methods that can be called is greatly reduced.
		1776
		1777	=cut
772		1778
773	our $safe = new Safe "safe";	1779	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	1780	our $safe_hole = new Safe::Hole;
775		1781
776	$SIG{FPE} = 'IGNORE';	1782	$SIG{FPE} = 'IGNORE';
777		1783
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1784	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		1785
780	# here we export the classes and methods available to script code	1786	# here we export the classes and methods available to script code
781		1787
		1788	=pod
		1789
		1790	The following fucntions and emthods are available within a safe environment:
		1791
		1792	cf::object contr pay_amount pay_player map
		1793	cf::object::player player
		1794	cf::player peaceful
		1795	cf::map trigger
		1796
		1797	=cut
		1798
782	for (	1799	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	1800	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	1801	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	1802	["cf::player" => qw(peaceful)],
		1803	["cf::map" => qw(trigger)],
786	) {	1804	) {
787	no strict 'refs';	1805	no strict 'refs';
788	my ($pkg, @funs) = @$_;	1806	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1807	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	1808	for @funs;
791	}	1809	}
		1810
		1811	=over 4
		1812
		1813	=item @retval = safe_eval $code, [var => value, ...]
		1814
		1815	Compiled and executes the given perl code snippet. additional var/value
		1816	pairs result in temporary local (my) scalar variables of the given name
		1817	that are available in the code snippet. Example:
		1818
		1819	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1820
		1821	=cut
792		1822
793	sub safe_eval($;@) {	1823	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	1824	my ($code, %vars) = @_;
795		1825
796	my $qcode = $code;	1826	my $qcode = $code;
…		…
819	}	1849	}
820		1850
821	wantarray ? @res : $res[0]	1851	wantarray ? @res : $res[0]
822	}	1852	}
823		1853
		1854	=item cf::register_script_function $function => $cb
		1855
		1856	Register a function that can be called from within map/npc scripts. The
		1857	function should be reasonably secure and should be put into a package name
		1858	like the extension.
		1859
		1860	Example: register a function that gets called whenever a map script calls
		1861	C<rent::overview>, as used by the C<rent> extension.
		1862
		1863	cf::register_script_function "rent::overview" => sub {
		1864	...
		1865	};
		1866
		1867	=cut
		1868
824	sub register_script_function {	1869	sub register_script_function {
825	my ($fun, $cb) = @_;	1870	my ($fun, $cb) = @_;
826		1871
827	no strict 'refs';	1872	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1873	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	1874	}
830		1875
		1876	=back
		1877
		1878	=cut
		1879
		1880	#############################################################################
		1881
		1882	=head2 EXTENSION DATABASE SUPPORT
		1883
		1884	Crossfire maintains a very simple database for extension use. It can
		1885	currently store anything that can be serialised using Storable, which
		1886	excludes objects.
		1887
		1888	The parameter C<$family> should best start with the name of the extension
		1889	using it, it should be unique.
		1890
		1891	=over 4
		1892
		1893	=item $hashref = cf::db_get $family
		1894
		1895	Return a hashref for use by the extension C<$family>, which can be
		1896	modified. After modifications, you have to call C<cf::db_dirty> or
		1897	C<cf::db_sync>.
		1898
		1899	=item $value = cf::db_get $family => $key
		1900
		1901	Returns a single value from the database
		1902
		1903	=item cf::db_put $family => $hashref
		1904
		1905	Stores the given family hashref into the database. Updates are delayed, if
		1906	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1907
		1908	=item cf::db_put $family => $key => $value
		1909
		1910	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1911	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1912
		1913	=item cf::db_dirty
		1914
		1915	Marks the database as dirty, to be updated at a later time.
		1916
		1917	=item cf::db_sync
		1918
		1919	Immediately write the database to disk I<if it is dirty>.
		1920
		1921	=cut
		1922
		1923	our $DB;
		1924
		1925	{
		1926	my $path = cf::localdir . "/database.pst";
		1927
		1928	sub db_load() {
		1929	$DB = stat $path ? Storable::retrieve $path : { };
		1930	}
		1931
		1932	my $pid;
		1933
		1934	sub db_save() {
		1935	waitpid $pid, 0 if $pid;
		1936	if (0 == ($pid = fork)) {
		1937	$DB->{_meta}{version} = 1;
		1938	Storable::nstore $DB, "$path~";
		1939	rename "$path~", $path;
		1940	cf::_exit 0 if defined $pid;
		1941	}
		1942	}
		1943
		1944	my $dirty;
		1945
		1946	sub db_sync() {
		1947	db_save if $dirty;
		1948	undef $dirty;
		1949	}
		1950
		1951	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1952	db_sync;
		1953	});
		1954
		1955	sub db_dirty() {
		1956	$dirty = 1;
		1957	$idle->start;
		1958	}
		1959
		1960	sub db_get($;$) {
		1961	@_ >= 2
		1962	? $DB->{$_[0]}{$_[1]}
		1963	: ($DB->{$_[0]} ||= { })
		1964	}
		1965
		1966	sub db_put($$;$) {
		1967	if (@_ >= 3) {
		1968	$DB->{$_[0]}{$_[1]} = $_[2];
		1969	} else {
		1970	$DB->{$_[0]} = $_[1];
		1971	}
		1972	db_dirty;
		1973	}
		1974
		1975	cf::global->attach (
		1976	prio => 10000,
		1977	on_cleanup => sub {
		1978	db_sync;
		1979	},
		1980	);
		1981	}
		1982
831	#############################################################################	1983	#############################################################################
832	# the server's main()	1984	# the server's main()
833		1985
		1986	sub cfg_load {
		1987	open my $fh, "<:utf8", cf::confdir . "/config"
		1988	or return;
		1989
		1990	local $/;
		1991	*CFG = YAML::Syck::Load <$fh>;
		1992
		1993	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		1994
		1995	if (exists $CFG{mlockall}) {
		1996	eval {
		1997	$CFG{mlockall} ? &mlockall : &munlockall
		1998	and die "WARNING: m(un)lockall failed: $!\n";
		1999	};
		2000	warn $@ if $@;
		2001	}
		2002	}
		2003
834	sub main {	2004	sub main {
		2005	# we must not ever block the main coroutine
		2006	local $Coro::idle = sub {
		2007	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2008	(Coro::unblock_sub {
		2009	Event::one_event;
		2010	})->();
		2011	};
		2012
		2013	cfg_load;
		2014	db_load;
		2015	load_extensions;
835	Event::loop;	2016	Event::loop;
836	}	2017	}
837		2018
838	#############################################################################	2019	#############################################################################
839	# initialisation	2020	# initialisation
840		2021
		2022	sub reload() {
		2023	# can/must only be called in main
		2024	if ($Coro::current != $Coro::main) {
		2025	warn "can only reload from main coroutine\n";
		2026	return;
		2027	}
		2028
		2029	warn "reloading...";
		2030
		2031	my $guard = freeze_mainloop;
		2032	cf::emergency_save;
		2033
		2034	eval {
		2035	# if anything goes wrong in here, we should simply crash as we already saved
		2036
		2037	# cancel all watchers
		2038	for (Event::all_watchers) {
		2039	$_->cancel if $_->data & WF_AUTOCANCEL;
		2040	}
		2041
		2042	# cancel all extension coros
		2043	$_->cancel for values %EXT_CORO;
		2044	%EXT_CORO = ();
		2045
		2046	# unload all extensions
		2047	for (@exts) {
		2048	warn "unloading <$_>";
		2049	unload_extension $_;
		2050	}
		2051
		2052	# unload all modules loaded from $LIBDIR
		2053	while (my ($k, $v) = each %INC) {
		2054	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2055
		2056	warn "removing <$k>";
		2057	delete $INC{$k};
		2058
		2059	$k =~ s/\.pm$//;
		2060	$k =~ s/\//::/g;
		2061
		2062	if (my $cb = $k->can ("unload_module")) {
		2063	$cb->();
		2064	}
		2065
		2066	Symbol::delete_package $k;
		2067	}
		2068
		2069	# sync database to disk
		2070	cf::db_sync;
		2071	IO::AIO::flush;
		2072
		2073	# get rid of safe::, as good as possible
		2074	Symbol::delete_package "safe::$_"
		2075	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2076
		2077	# remove register_script_function callbacks
		2078	# TODO
		2079
		2080	# unload cf.pm "a bit"
		2081	delete $INC{"cf.pm"};
		2082
		2083	# don't, removes xs symbols, too,
		2084	# and global variables created in xs
		2085	#Symbol::delete_package __PACKAGE__;
		2086
		2087	# reload cf.pm
		2088	warn "reloading cf.pm";
		2089	require cf;
		2090	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2091
		2092	# load config and database again
		2093	cf::cfg_load;
		2094	cf::db_load;
		2095
		2096	# load extensions
		2097	warn "load extensions";
		2098	cf::load_extensions;
		2099
		2100	# reattach attachments to objects
		2101	warn "reattach";
		2102	_global_reattach;
		2103	};
		2104
		2105	if ($@) {
		2106	warn $@;
		2107	warn "error while reloading, exiting.";
		2108	exit 1;
		2109	}
		2110
		2111	warn "reloaded successfully";
		2112	};
		2113
		2114	#############################################################################
		2115
		2116	unless ($LINK_MAP) {
		2117	$LINK_MAP = cf::map::new;
		2118
		2119	$LINK_MAP->width (41);
		2120	$LINK_MAP->height (41);
		2121	$LINK_MAP->alloc;
		2122	$LINK_MAP->path ("{link}");
		2123	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2124	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2125
		2126	# dirty hack because... archetypes are not yet loaded
		2127	Event->timer (
		2128	after => 2,
		2129	cb => sub {
		2130	$_[0]->w->cancel;
		2131
		2132	# provide some exits "home"
		2133	my $exit = cf::object::new "exit";
		2134
		2135	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2136	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2137	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2138
		2139	$LINK_MAP->insert ($exit->clone, 19, 19);
		2140	$LINK_MAP->insert ($exit->clone, 19, 20);
		2141	$LINK_MAP->insert ($exit->clone, 19, 21);
		2142	$LINK_MAP->insert ($exit->clone, 20, 19);
		2143	$LINK_MAP->insert ($exit->clone, 20, 21);
		2144	$LINK_MAP->insert ($exit->clone, 21, 19);
		2145	$LINK_MAP->insert ($exit->clone, 21, 20);
		2146	$LINK_MAP->insert ($exit->clone, 21, 21);
		2147
		2148	$exit->destroy;
		2149	});
		2150
		2151	$LINK_MAP->{deny_save} = 1;
		2152	$LINK_MAP->{deny_reset} = 1;
		2153
		2154	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2155	}
		2156
841	register "<global>", __PACKAGE__;	2157	register "<global>", __PACKAGE__;
842		2158
		2159	register_command "reload" => sub {
		2160	my ($who, $arg) = @_;
		2161
		2162	if ($who->flag (FLAG_WIZ)) {
		2163	$who->message ("start of reload.");
		2164	reload;
		2165	$who->message ("end of reload.");
		2166	}
		2167	};
		2168
843	unshift @INC, $LIBDIR;	2169	unshift @INC, $LIBDIR;
844		2170
845	load_extensions;
846
847	$TICK_WATCHER = Event->timer (	2171	$TICK_WATCHER = Event->timer (
		2172	reentrant => 0,
848	prio => 1,	2173	prio => 0,
849	at => $NEXT_TICK || 1,	2174	at => $NEXT_TICK || $TICK,
		2175	data => WF_AUTOCANCEL,
850	cb => sub {	2176	cb => sub {
851	cf::server_tick; # one server iteration	2177	cf::server_tick; # one server iteration
852		2178	$RUNTIME += $TICK;
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2179	$NEXT_TICK += $TICK;
855		2180
856	# if we are delayed by four ticks, skip them all	2181	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2182	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2183
859	$TICK_WATCHER->at ($NEXT_TICK);	2184	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2185	$TICK_WATCHER->start;
861	},	2186	},
862	);	2187	);
863		2188
864	_reload_2;	2189	IO::AIO::max_poll_time $TICK * 0.2;
		2190
		2191	Event->io (
		2192	fd => IO::AIO::poll_fileno,
		2193	poll => 'r',
		2194	prio => 5,
		2195	data => WF_AUTOCANCEL,
		2196	cb => \&IO::AIO::poll_cb,
		2197	);
		2198
		2199	Event->timer (
		2200	data => WF_AUTOCANCEL,
		2201	after => 0,
		2202	interval => 10,
		2203	cb => sub {
		2204	(Coro::unblock_sub {
		2205	write_runtime
		2206	or warn "ERROR: unable to write runtime file: $!";
		2207	})->();
		2208	},
		2209	);
		2210
		2211	END { cf::emergency_save }
865		2212
866	1	2213	1
867		2214

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