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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.46 by root, Sun Aug 27 16:15:12 2006 UTC vs.
Revision 1.145 by root, Sun Jan 7 21:54:59 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 2.32 ();
		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
		31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
16	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
17	our @EVENT;	39	our @EVENT;
18	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;
20	our $LIBDIR = maps_directory "perl";
21		41
22	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	43	our $TICK_WATCHER;
24	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 %PLAYER; # all users
		53	our %MAP; # all maps
		54	our $LINK_MAP; # the special {link} map
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO; # coroutines bound to extensions
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76	our $EMERGENCY_POSITION;
		77
		78	#############################################################################
		79
		80	=head2 GLOBAL VARIABLES
		81
		82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
		92
		93	=item $cf::LIBDIR
		94
		95	The perl library directory, where extensions and cf-specific modules can
		96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
		101
		102	=item $cf::TICK
		103
		104	The interval between server ticks, in seconds.
		105
		106	=item %cf::CFG
		107
		108	Configuration for the server, loaded from C</etc/crossfire/config>, or
		109	from wherever your confdir points to.
		110
		111	=back
		112
		113	=cut
25		114
26	BEGIN {	115	BEGIN {
27	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
29	$msg .= "\n"	120	$msg .= "\n"
30	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
31		122
32	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	123	LOG llevError, "cfperl: $msg";
34	};	124	};
35	}	125	}
36		126
37	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38		128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39	# generate property mutators	129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40	sub prop_gen {	130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41	my ($prefix, $class) = @_;	131	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
42
43	no strict 'refs';
44
45	for my $prop (keys %PROP_TYPE) {
46	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
47	my $sub = lc $1;
48
49	my $type = $PROP_TYPE{$prop};
50	my $idx = $PROP_IDX {$prop};
51
52	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
53	$_[0]->get_property ($type, $idx)
54	};
55
56	*{"$class\::set_$sub"} = sub {
57	$_[0]->set_property ($type, $idx, $_[1]);
58	} unless $ignore_set{$prop};
59	}
60	}
61
62	# auto-generate most of the API
63
64	prop_gen OBJECT_PROP => "cf::object";
65	# CFAPI_OBJECT_ANIMATION?
66	prop_gen PLAYER_PROP => "cf::object::player";
67
68	prop_gen MAP_PROP => "cf::map";
69	prop_gen ARCH_PROP => "cf::arch";
70
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		133
73	# we bless all objects into (empty) derived classes to force a method lookup	134	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	135	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
76	no strict 'refs';	143	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	145	}
79		146
80	$Event::DIED = sub {	147	$Event::DIED = sub {
…		…
82	};	149	};
83		150
84	my %ext_pkg;	151	my %ext_pkg;
85	my @exts;	152	my @exts;
86	my @hook;	153	my @hook;
87	my %command;
88	my %extcmd;
89		154
90	#############################################################################	155	=head2 UTILITY FUNCTIONS
91	# utility functions	156
		157	=over 4
		158
		159	=cut
92		160
93	use JSON::Syck (); # TODO# replace by JSON::PC once working	161	use JSON::Syck (); # TODO# replace by JSON::PC once working
		162
		163	=item $ref = cf::from_json $json
		164
		165	Converts a JSON string into the corresponding perl data structure.
		166
		167	=cut
94		168
95	sub from_json($) {	169	sub from_json($) {
96	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	170	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97	JSON::Syck::Load $_[0]	171	JSON::Syck::Load $_[0]
98	}	172	}
99		173
		174	=item $json = cf::to_json $ref
		175
		176	Converts a perl data structure into its JSON representation.
		177
		178	=cut
		179
100	sub to_json($) {	180	sub to_json($) {
101	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102	JSON::Syck::Dump $_[0]	182	JSON::Syck::Dump $_[0]
103	}	183	}
104		184
		185	=item cf::lock_wait $string
		186
		187	Wait until the given lock is available. See cf::lock_acquire.
		188
		189	=item my $lock = cf::lock_acquire $string
		190
		191	Wait until the given lock is available and then acquires it and returns
		192	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		193	for example when the coroutine gets canceled), the lock is automatically
		194	returned.
		195
		196	Lock names should begin with a unique identifier (for example, cf::map::find
		197	uses map_find and cf::map::load uses map_load).
		198
		199	=cut
		200
		201	our %LOCK;
		202
		203	sub lock_wait($) {
		204	my ($key) = @_;
		205
		206	# wait for lock, if any
		207	while ($LOCK{$key}) {
		208	push @{ $LOCK{$key} }, $Coro::current;
		209	Coro::schedule;
		210	}
		211	}
		212
		213	sub lock_acquire($) {
		214	my ($key) = @_;
		215
		216	# wait, to be sure we are not locked
		217	lock_wait $key;
		218
		219	$LOCK{$key} = [];
		220
		221	Coro::guard {
		222	# wake up all waiters, to be on the safe side
		223	$_->ready for @{ delete $LOCK{$key} };
		224	}
		225	}
		226
		227	sub freeze_mainloop {
		228	return unless $TICK_WATCHER->is_active;
		229
		230	my $guard = Coro::guard { $TICK_WATCHER->start };
		231	$TICK_WATCHER->stop;
		232	$guard
		233	}
		234
		235	=item cf::async { BLOCK }
		236
		237	Currently the same as Coro::async_pool, meaning you cannot use
		238	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		239	thing you are allowed to do is call C<prio> on it.
		240
		241	=cut
		242
		243	BEGIN { *async = \&Coro::async_pool }
		244
		245	=item cf::sync_job { BLOCK }
		246
		247	The design of crossfire+ requires that the main coro ($Coro::main) is
		248	always able to handle events or runnable, as crossfire+ is only partly
		249	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		250
		251	If it must be done, put the blocking parts into C<sync_job>. This will run
		252	the given BLOCK in another coroutine while waiting for the result. The
		253	server will be frozen during this time, so the block should either finish
		254	fast or be very important.
		255
		256	=cut
		257
		258	sub sync_job(&) {
		259	my ($job) = @_;
		260
		261	if ($Coro::current == $Coro::main) {
		262	# this is the main coro, too bad, we have to block
		263	# till the operation succeeds, freezing the server :/
		264
		265	# TODO: use suspend/resume instead
		266	# (but this is cancel-safe)
		267	my $freeze_guard = freeze_mainloop;
		268
		269	my $busy = 1;
		270	my @res;
		271
		272	(async {
		273	@res = eval { $job->() };
		274	warn $@ if $@;
		275	undef $busy;
		276	})->prio (Coro::PRIO_MAX);
		277
		278	while ($busy) {
		279	Coro::cede or Event::one_event;
		280	}
		281
		282	wantarray ? @res : $res[0]
		283	} else {
		284	# we are in another coroutine, how wonderful, everything just works
		285
		286	$job->()
		287	}
		288	}
		289
		290	=item $coro = cf::async_ext { BLOCK }
		291
		292	Like async, but this coro is automcatially being canceled when the
		293	extension calling this is being unloaded.
		294
		295	=cut
		296
		297	sub async_ext(&) {
		298	my $cb = shift;
		299
		300	my $coro = &Coro::async ($cb);
		301
		302	$coro->on_destroy (sub {
		303	delete $EXT_CORO{$coro+0};
		304	});
		305	$EXT_CORO{$coro+0} = $coro;
		306
		307	$coro
		308	}
		309
		310	sub write_runtime {
		311	my $runtime = cf::localdir . "/runtime";
		312
		313	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		314	or return;
		315
		316	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		317	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		318	and return;
		319
		320	aio_fsync $fh
		321	and return;
		322
		323	close $fh
		324	or return;
		325
		326	aio_rename "$runtime~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
		332	=back
		333
		334	=cut
		335
105	#############################################################################	336	#############################################################################
106	# "new" plug-in system
107		337
108	=item $object->attach ($attachment, ...)	338	package cf::path;
109		339
110	Attach a pre-registered attachment to an object.	340	sub new {
		341	my ($class, $path, $base) = @_;
111		342
112	=item $player->attach ($attachment, ...)	343	$path = $path->as_string if ref $path;
113		344
114	Attach a pre-registered attachment to a player.	345	my $self = bless { }, $class;
115		346
116	=item $map->attach ($attachment, ...) # not yet persistent	347	# {... are special paths that are not touched
		348	# ?xxx/... are special absolute paths
		349	# ?random/... random maps
		350	# /! non-realised random map exit
		351	# /... normal maps
		352	# ~/... per-player maps without a specific player (DO NOT USE)
		353	# ~user/... per-player map of a specific user
117		354
118	Attach a pre-registered attachment to a map.	355	if ($path =~ /^{/) {
		356	# fine as it is
		357	} elsif ($path =~ s{^\?random/}{}) {
		358	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		359	$self->{random} = cf::from_json $data;
		360	} else {
		361	if ($path =~ s{^~([^/]+)?}{}) {
		362	$self->{user_rel} = 1;
119		363
120	=item cf::attach_global ...	364	if (defined $1) {
		365	$self->{user} = $1;
		366	} elsif ($base =~ m{^~([^/]+)/}) {
		367	$self->{user} = $1;
		368	} else {
		369	warn "cannot resolve user-relative path without user <$path,$base>\n";
		370	}
		371	} elsif ($path =~ /^\//) {
		372	# already absolute
		373	} else {
		374	$base =~ s{[^/]+/?$}{};
		375	return $class->new ("$base/$path");
		376	}
121		377
122	Attach handlers for global events.	378	for ($path) {
		379	redo if s{/\.?/}{/};
		380	redo if s{/[^/]+/\.\./}{/};
		381	}
		382	}
123		383
124	This and all following C<attach_*>-functions expect any number of the	384	$self->{path} = $path;
125	following handler/hook descriptions:	385
		386	$self
		387	}
		388
		389	# the name / primary key / in-game path
		390	sub as_string {
		391	my ($self) = @_;
		392
		393	$self->{user_rel} ? "~$self->{user}$self->{path}"
		394	: $self->{random} ? "?random/$self->{path}"
		395	: $self->{path}
		396	}
		397
		398	# the displayed name, this is a one way mapping
		399	sub visible_name {
		400	my ($self) = @_;
		401
		402	# if (my $rmp = $self->{random}) {
		403	# # todo: be more intelligent about this
		404	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		405	# } else {
		406	$self->as_string
		407	# }
		408	}
		409
		410	# escape the /'s in the path
		411	sub _escaped_path {
		412	# ∕ is U+2215
		413	(my $path = $_[0]{path}) =~ s/\//∕/g;
		414	$path
		415	}
		416
		417	# the original (read-only) location
		418	sub load_path {
		419	my ($self) = @_;
		420
		421	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		422	}
		423
		424	# the temporary/swap location
		425	sub save_path {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		429	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		430	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		431	}
		432
		433	# the unique path, might be eq to save_path
		434	sub uniq_path {
		435	my ($self) = @_;
		436
		437	$self->{user_rel} || $self->{random}
		438	? undef
		439	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		440	}
		441
		442	# return random map parameters, or undef
		443	sub random_map_params {
		444	my ($self) = @_;
		445
		446	$self->{random}
		447	}
		448
		449	# this is somewhat ugly, but style maps do need special treatment
		450	sub is_style_map {
		451	$_[0]{path} =~ m{^/styles/}
		452	}
		453
		454	package cf;
		455
		456	#############################################################################
		457
		458	=head2 ATTACHABLE OBJECTS
		459
		460	Many objects in crossfire are so-called attachable objects. That means you can
		461	attach callbacks/event handlers (a collection of which is called an "attachment")
		462	to it. All such attachable objects support the following methods.
		463
		464	In the following description, CLASS can be any of C<global>, C<object>
		465	C<player>, C<client> or C<map> (i.e. the attachable objects in
		466	crossfire+).
		467
		468	=over 4
		469
		470	=item $attachable->attach ($attachment, key => $value...)
		471
		472	=item $attachable->detach ($attachment)
		473
		474	Attach/detach a pre-registered attachment to a specific object and give it
		475	the specified key/value pairs as arguments.
		476
		477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
		479
		480	$obj->attach (minesweeper => width => 10, height => 10);
		481
		482	=item $bool = $attachable->attached ($name)
		483
		484	Checks wether the named attachment is currently attached to the object.
		485
		486	=item cf::CLASS->attach ...
		487
		488	=item cf::CLASS->detach ...
		489
		490	Define an anonymous attachment and attach it to all objects of the given
		491	CLASS. See the next function for an explanation of its arguments.
		492
		493	You can attach to global events by using the C<cf::global> class.
		494
		495	Example, log all player logins:
		496
		497	cf::player->attach (
		498	on_login => sub {
		499	my ($pl) = @_;
		500	...
		501	},
		502	);
		503
		504	Example, attach to the jeweler skill:
		505
		506	cf::object->attach (
		507	type => cf::SKILL,
		508	subtype => cf::SK_JEWELER,
		509	on_use_skill => sub {
		510	my ($sk, $ob, $part, $dir, $msg) = @_;
		511	...
		512	},
		513	);
		514
		515	=item cf::CLASS::attachment $name, ...
		516
		517	Register an attachment by C<$name> through which attachable objects of the
		518	given CLASS can refer to this attachment.
		519
		520	Some classes such as crossfire maps and objects can specify attachments
		521	that are attached at load/instantiate time, thus the need for a name.
		522
		523	These calls expect any number of the following handler/hook descriptions:
126		524
127	=over 4	525	=over 4
128		526
129	=item prio => $number	527	=item prio => $number
130		528
…		…
132	by another C<prio> setting). Lower priority handlers get executed	530	by another C<prio> setting). Lower priority handlers get executed
133	earlier. The default priority is C<0>, and many built-in handlers are	531	earlier. The default priority is C<0>, and many built-in handlers are
134	registered at priority C<-1000>, so lower priorities should not be used	532	registered at priority C<-1000>, so lower priorities should not be used
135	unless you know what you are doing.	533	unless you know what you are doing.
136		534
		535	=item type => $type
		536
		537	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		538	given type of objects only (the additional parameter C<subtype> can be
		539	used to further limit to the given subtype).
		540
137	=item on_I<event> => \&cb	541	=item on_I<event> => \&cb
138		542
139	Call the given code reference whenever the named event happens (event is	543	Call the given code reference whenever the named event happens (event is
140	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	544	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
141	handlers are recognised generally depends on the type of object these	545	handlers are recognised generally depends on the type of object these
…		…
150	package and register them. Only handlers for eevents supported by the	554	package and register them. Only handlers for eevents supported by the
151	object/class are recognised.	555	object/class are recognised.
152		556
153	=back	557	=back
154		558
155	=item cf::attach_to_type $object_type, ...	559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
156		561
157	Attach handlers for a specific object type (e.g. TRANSPORT).	562	cf::object::attachment sockpuppet =>
		563	on_skill_attack => sub {
		564	my ($self, $victim) = @_;
		565	...
		566	}
		567	}
158		568
159	=item cf::attach_to_objects ...	569	=item $attachable->valid
160		570
161	Attach handlers to all objects. Do not use this except for debugging or	571	Just because you have a perl object does not mean that the corresponding
162	very rare events, as handlers are (obviously) called for I<all> objects in	572	C-level object still exists. If you try to access an object that has no
163	the game.	573	valid C counterpart anymore you get an exception at runtime. This method
164		574	can be used to test for existence of the C object part without causing an
165	=item cf::attach_to_players ...	575	exception.
166
167	Attach handlers to all players.
168
169	=item cf::attach_to_maps ...
170
171	Attach handlers to all maps.
172
173	=item cf:register_attachment $name, ...
174		576
175	=cut	577	=cut
176		578
177	# the following variables are defined in .xs and must not be re-created	579	# the following variables are defined in .xs and must not be re-created
178	our @CB_GLOBAL = (); # registry for all global events	580	our @CB_GLOBAL = (); # registry for all global events
		581	our @CB_ATTACHABLE = (); # registry for all attachables
179	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	582	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
180	our @CB_PLAYER = ();	583	our @CB_PLAYER = ();
		584	our @CB_CLIENT = ();
181	our @CB_TYPE = (); # registry for type (cf-object class) based events	585	our @CB_TYPE = (); # registry for type (cf-object class) based events
182	our @CB_MAP = ();	586	our @CB_MAP = ();
183		587
184	my %attachment;	588	my %attachment;
185		589
186	sub _attach_cb($\%$$$) {	590	sub _attach_cb($$$$) {
187	my ($registry, $undo, $event, $prio, $cb) = @_;	591	my ($registry, $event, $prio, $cb) = @_;
188		592
189	use sort 'stable';	593	use sort 'stable';
190		594
191	$cb = [$prio, $cb];	595	$cb = [$prio, $cb];
192		596
193	@{$registry->[$event]} = sort	597	@{$registry->[$event]} = sort
194	{ $a->[0] cmp $b->[0] }	598	{ $a->[0] cmp $b->[0] }
195	@{$registry->[$event] || []}, $cb;	599	@{$registry->[$event] || []}, $cb;
196
197	push @{$undo->{cb}}, [$event, $cb];
198	}	600	}
		601
		602	# hack
		603	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
199		604
200	# attach handles attaching event callbacks	605	# attach handles attaching event callbacks
201	# the only thing the caller has to do is pass the correct	606	# the only thing the caller has to do is pass the correct
202	# registry (== where the callback attaches to).	607	# registry (== where the callback attaches to).
203	sub _attach(\@$@) {	608	sub _attach {
204	my ($registry, $klass, @arg) = @_;	609	my ($registry, $klass, @arg) = @_;
205		610
		611	my $object_type;
206	my $prio = 0;	612	my $prio = 0;
207
208	my %undo = (
209	registry => $registry,
210	cb => [],
211	);
212
213	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	613	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		614
		615	#TODO: get rid of this hack
		616	if ($attachable_klass{$klass}) {
		617	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		618	}
214		619
215	while (@arg) {	620	while (@arg) {
216	my $type = shift @arg;	621	my $type = shift @arg;
217		622
218	if ($type eq "prio") {	623	if ($type eq "prio") {
219	$prio = shift @arg;	624	$prio = shift @arg;
220		625
		626	} elsif ($type eq "type") {
		627	$object_type = shift @arg;
		628	$registry = $CB_TYPE[$object_type] ||= [];
		629
		630	} elsif ($type eq "subtype") {
		631	defined $object_type or Carp::croak "subtype specified without type";
		632	my $object_subtype = shift @arg;
		633	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		634
221	} elsif ($type eq "package") {	635	} elsif ($type eq "package") {
222	my $pkg = shift @arg;	636	my $pkg = shift @arg;
223		637
224	while (my ($name, $id) = each %cb_id) {	638	while (my ($name, $id) = each %cb_id) {
225	if (my $cb = $pkg->can ($name)) {	639	if (my $cb = $pkg->can ($name)) {
226	_attach_cb $registry, %undo, $id, $prio, $cb;	640	_attach_cb $registry, $id, $prio, $cb;
227	}	641	}
228	}	642	}
229		643
230	} elsif (exists $cb_id{$type}) {	644	} elsif (exists $cb_id{$type}) {
231	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	645	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
232		646
233	} elsif (ref $type) {	647	} elsif (ref $type) {
234	warn "attaching objects not supported, ignoring.\n";	648	warn "attaching objects not supported, ignoring.\n";
235		649
236	} else {	650	} else {
237	shift @arg;	651	shift @arg;
238	warn "attach argument '$type' not supported, ignoring.\n";	652	warn "attach argument '$type' not supported, ignoring.\n";
239	}	653	}
240	}	654	}
241
242	\%undo
243	}	655	}
244		656
245	sub _attach_attachment {	657	sub _object_attach {
246	my ($klass, $obj, $name, @args) = q_;	658	my ($obj, $name, %arg) = @_;
247		659
248	my $res;	660	return if exists $obj->{_attachment}{$name};
249		661
250	if (my $attach = $attachment{$name}) {	662	if (my $attach = $attachment{$name}) {
251	my $registry = $obj->registry;	663	my $registry = $obj->registry;
252		664
		665	for (@$attach) {
		666	my ($klass, @attach) = @$_;
253	$res = _attach @$registry, $klass, @$attach;	667	_attach $registry, $klass, @attach;
254
255	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
256	for (@$cb) {
257	eval { $_->[1]->($obj, @args); };
258	if ($@) {
259	warn "$@";
260	warn "... while processing '$name' instantiate with args <@args>.\n";
261	}
262	}	668	}
263	}	669
		670	$obj->{$name} = \%arg;
264	} else {	671	} else {
265	warn "object uses attachment '$name' that is not available, postponing.\n";	672	warn "object uses attachment '$name' that is not available, postponing.\n";
266	}	673	}
267		674
268	push @{$obj->{_attachment}}, $name;	675	$obj->{_attachment}{$name} = undef;
269
270	$res->{attachment} = $name;
271	$res
272	}	676	}
273		677
274	sub cf::object::attach {	678	sub cf::attachable::attach {
		679	if (ref $_[0]) {
		680	_object_attach @_;
		681	} else {
		682	_attach shift->_attach_registry, @_;
		683	}
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
275	my ($obj, $name, @args) = @_;	688	my ($obj, $name) = @_;
276		689
277	_attach_attachment KLASS_OBJECT, $obj, $name, @args;	690	if (ref $obj) {
278	}	691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	};
279		697
280	sub cf::player::attach {	698	sub cf::attachable::attached {
281	my ($obj, $name, @args) = @_;	699	my ($obj, $name) = @_;
282		700
283	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	701	exists $obj->{_attachment}{$name}
284	}	702	}
285		703
286	sub cf::map::attach {	704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
287	my ($obj, $name, @args) = @_;	705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
288		709
289	_attach_attachment KLASS_MAP, $obj, $name, @args;	710	sub cf::\L$klass\E::attachment {
290	}
291
292	sub attach_global {
293	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
294	}
295
296	sub attach_to_type {
297	my $type = shift;
298
299	_attach @{$CB_TYPE[$type]}, 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;	711	my \$name = shift;
316		712
317	$attachment{$name} = [@_];	713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
318	}	717	}
319		718
320	our $override;	719	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		721
…		…
336	for (@$callbacks) {	735	for (@$callbacks) {
337	eval { &{$_->[1]} };	736	eval { &{$_->[1]} };
338		737
339	if ($@) {	738	if ($@) {
340	warn "$@";	739	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	741	override;
343	}	742	}
344		743
345	return 1 if $override;	744	return 1 if $override;
346	}	745	}
347		746
348	0	747	0
349	}	748	}
		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
		760	=back
		761
		762	=cut
350		763
351	#############################################################################	764	#############################################################################
352	# object support	765	# object support
353		766
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361	attach $obj, $name, @{$args || [] };
362	}
363	}
364
365	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	767	sub reattach {
367	warn "reattach<@_>\n";#d#	768	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	769	my ($obj) = @_;
		770
369	my $registry = $obj->registry;	771	my $registry = $obj->registry;
370		772
		773	@$registry = ();
		774
		775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		776
371	for my $name (@{ $obj->{_attachment} }) {	777	for my $name (keys %{ $obj->{_attachment} || {} }) {
372	if (my $attach = $attachment{$name}) {	778	if (my $attach = $attachment{$name}) {
		779	for (@$attach) {
		780	my ($klass, @attach) = @$_;
373	_attach @$registry, KLASS_OBJECT, @$attach;	781	_attach $registry, $klass, @attach;
		782	}
374	} else {	783	} else {
375	warn "object uses attachment '$name' that is not available, postponing.\n";	784	warn "object uses attachment '$name' that is not available, postponing.\n";
376	}	785	}
377	}	786	}
378
379	warn "reattach<@_, $_>\n";
380	}	787	}
		788
		789	cf::attachable->attach (
		790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
		803	on_clone => sub {
		804	my ($src, $dst) = @_;
		805
		806	@{$dst->registry} = @{$src->registry};
		807
		808	%$dst = %$src;
		809
		810	%{$dst->{_attachment}} = %{$src->{_attachment}}
		811	if exists $src->{_attachment};
		812	},
		813	);
381		814
382	sub object_freezer_save {	815	sub object_freezer_save {
383	my ($filename, $objs) = @_;	816	my ($filename, $rdata, $objs) = @_;
384	warn "freeze $filename\n";#d#
385	use Data::Dumper; print Dumper $objs;
386		817
387	$filename .= ".pst";	818	sync_job {
		819	if (length $$rdata) {
		820	warn sprintf "saving %s (%d,%d)\n",
		821	$filename, length $$rdata, scalar @$objs;
388		822
389	if (@$objs) {	823	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
390	open my $fh, ">:raw", "$filename~";	824	chmod SAVE_MODE, $fh;
391	chmod $fh, SAVE_MODE;	825	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	826	aio_fsync $fh;
393	close $fh;	827	close $fh;
		828
		829	if (@$objs) {
		830	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		831	chmod SAVE_MODE, $fh;
		832	my $data = Storable::nfreeze { version => 1, objs => $objs };
		833	aio_write $fh, 0, (length $data), $data, 0;
		834	aio_fsync $fh;
		835	close $fh;
		836	aio_rename "$filename.pst~", "$filename.pst";
		837	}
		838	} else {
		839	aio_unlink "$filename.pst";
		840	}
		841
394	rename "$filename~", $filename;	842	aio_rename "$filename~", $filename;
		843	} else {
		844	warn "FATAL: $filename~: $!\n";
		845	}
395	} else {	846	} else {
396	unlink $filename;	847	aio_unlink $filename;
		848	aio_unlink "$filename.pst";
		849	}
397	}	850	}
		851	}
		852
		853	sub object_freezer_as_string {
		854	my ($rdata, $objs) = @_;
		855
		856	use Data::Dumper;
		857
		858	$$rdata . Dumper $objs
398	}	859	}
399		860
400	sub object_thawer_load {	861	sub object_thawer_load {
401	my ($filename) = @_;	862	my ($filename) = @_;
402		863
403	warn "thaw $filename\n";#d#	864	my ($data, $av);
404		865
405	open my $fh, "<:raw:perlio", "$filename.pst"	866	(aio_load $filename, $data) >= 0
406	or return;	867	or return;
407		868
408	eval { local $/; (Storable::thaw <$fh>)->{objs} }	869	unless (aio_stat "$filename.pst") {
409	}	870	(aio_load "$filename.pst", $av) >= 0
410		871	or return;
411	attach_to_objects	872	$av = eval { (Storable::thaw $av)->{objs} };
412	prio => -1000000,
413	on_clone => sub {
414	my ($src, $dst) = @_;
415
416	@{$dst->registry} = @{$src->registry};
417	warn "registry clone ", join ":", @{$src->registry};#d#
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423
424	warn "clone<@_>\n";#d#
425	},	873	}
426	;	874
		875	warn sprintf "loading %s (%d)\n",
		876	$filename, length $data, scalar @{$av || []};#d#
		877	return ($data, $av);
		878	}
427		879
428	#############################################################################	880	#############################################################################
429	# old plug-in events	881	# command handling &c
430		882
431	sub inject_event {	883	=item cf::register_command $name => \&callback($ob,$args);
432	my $extension = shift;
433	my $event_code = shift;
434		884
435	my $cb = $hook[$event_code]{$extension}	885	Register a callback for execution when the client sends the user command
436	or return;	886	$name.
437		887
438	&$cb	888	=cut
439	}
440
441	sub inject_global_event {
442	my $event = shift;
443
444	my $cb = $hook[$event]
445	or return;
446
447	List::Util::max map &$_, values %$cb
448	}
449
450	sub inject_command {
451	my ($name, $obj, $params) = @_;
452
453	for my $cmd (@{ $command{$name} }) {
454	$cmd->[1]->($obj, $params);
455	}
456
457	-1
458	}
459		889
460	sub register_command {	890	sub register_command {
461	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
462		892
463	my $caller = caller;	893	my $caller = caller;
464	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
465		895
466	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
467	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
468	}	897	}
		898
		899	=item cf::register_extcmd $name => \&callback($pl,$packet);
		900
		901	Register a callbackf ro execution when the client sends an extcmd packet.
		902
		903	If the callback returns something, it is sent back as if reply was being
		904	called.
		905
		906	=cut
469		907
470	sub register_extcmd {	908	sub register_extcmd {
471	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
472		910
473	my $caller = caller;	911	my $caller = caller;
474	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
475		913
476	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
477	}	915	}
		916
		917	cf::player->attach (
		918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
		920
		921	my $cb = $COMMAND{$name}
		922	or return;
		923
		924	for my $cmd (@$cb) {
		925	$cmd->[1]->($pl->ob, $params);
		926	}
		927
		928	cf::override;
		929	},
		930	on_extcmd => sub {
		931	my ($pl, $buf) = @_;
		932
		933	my $msg = eval { from_json $buf };
		934
		935	if (ref $msg) {
		936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		937	if (my %reply = $cb->[0]->($pl, $msg)) {
		938	$pl->ext_reply ($msg->{msgid}, %reply);
		939	}
		940	}
		941	} else {
		942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		943	}
		944
		945	cf::override;
		946	},
		947	);
478		948
479	sub register {	949	sub register {
480	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
481		951
482	#TODO	952	#TODO
…		…
501	. "#line 1 \"$path\"\n{\n"	971	. "#line 1 \"$path\"\n{\n"
502	. (do { local $/; <$fh> })	972	. (do { local $/; <$fh> })
503	. "\n};\n1";	973	. "\n};\n1";
504		974
505	eval $source	975	eval $source
506	or die "$path: $@";	976	or die $@ ? "$path: $@\n"
		977	: "extension disabled.\n";
507		978
508	push @exts, $pkg;	979	push @exts, $pkg;
509	$ext_pkg{$base} = $pkg;	980	$ext_pkg{$base} = $pkg;
510		981
511	# no strict 'refs';	982	# no strict 'refs';
…		…
524	# for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
525	# delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
526	# }	997	# }
527		998
528	# remove commands	999	# remove commands
529	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
530	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
531		1002
532	if (@cb) {	1003	if (@cb) {
533	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
534	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
535	} else {	1005	} else {
536	delete $command{$name};
537	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
538	}	1007	}
539	}	1008	}
540		1009
541	# remove extcmds	1010	# remove extcmds
542	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
543	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
544	}	1013	}
545		1014
546	if (my $cb = $pkg->can ("unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
547	eval {	1016	eval {
548	$cb->($pkg);	1017	$cb->($pkg);
…		…
552		1021
553	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
554	}	1023	}
555		1024
556	sub load_extensions {	1025	sub load_extensions {
557	my $LIBDIR = maps_directory "perl";
558
559	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
560	next unless -r $ext;	1027	next unless -r $ext;
561	eval {	1028	eval {
562	load_extension $ext;	1029	load_extension $ext;
563	1	1030	1
564	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
565	}	1032	}
566	}	1033	}
567		1034
568	sub _perl_reload(&) {
569	my ($msg) = @_;
570
571	$msg->("reloading...");
572
573	eval {
574	# 1. cancel all watchers
575	$_->cancel for Event::all_watchers;
576
577	# 2. unload all extensions
578	for (@exts) {
579	$msg->("unloading <$_>");
580	unload_extension $_;
581	}
582
583	# 3. unload all modules loaded from $LIBDIR
584	while (my ($k, $v) = each %INC) {
585	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
586
587	$msg->("removing <$k>");
588	delete $INC{$k};
589
590	$k =~ s/\.pm$//;
591	$k =~ s/\//::/g;
592
593	if (my $cb = $k->can ("unload_module")) {
594	$cb->();
595	}
596
597	Symbol::delete_package $k;
598	}
599
600	# 4. get rid of safe::, as good as possible
601	Symbol::delete_package "safe::$_"
602	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
603
604	# 5. remove register_script_function callbacks
605	# TODO
606
607	# 6. unload cf.pm "a bit"
608	delete $INC{"cf.pm"};
609
610	# don't, removes xs symbols, too,
611	# and global variables created in xs
612	#Symbol::delete_package __PACKAGE__;
613
614	# 7. reload cf.pm
615	$msg->("reloading cf.pm");
616	require cf;
617	};
618	$msg->($@) if $@;
619
620	$msg->("reloaded");
621	};
622
623	sub perl_reload() {
624	_perl_reload {
625	warn $_[0];
626	print "$_[0]\n";
627	};
628	}
629
630	register_command "perl-reload", 0, sub {
631	my ($who, $arg) = @_;
632
633	if ($who->flag (FLAG_WIZ)) {
634	_perl_reload {
635	warn $_[0];
636	$who->message ($_[0]);
637	};
638	}
639	};
640
641	#############################################################################
642	# extcmd framework, basically convert ext <msg>
643	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
644
645	attach_to_players
646	on_extcmd => sub {
647	my ($pl, $buf) = @_;
648
649	my $msg = eval { from_json $buf };
650
651	if (ref $msg) {
652	if (my $cb = $extcmd{$msg->{msgtype}}) {
653	if (my %reply = $cb->[0]->($pl, $msg)) {
654	$pl->ext_reply ($msg->{msgid}, %reply);
655	}
656	}
657	} else {
658	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
659	}
660
661	cf::override;
662	},
663	;
664
665	#############################################################################	1035	#############################################################################
666	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
667		1037
668	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
669	my ($map) = @_;	1039	my ($map) = @_;
670		1040
671	my $path = $map->tmpname;	1041	my $path = $map->tmpname;
672	defined $path or return;	1042	defined $path or return;
673		1043
674	unlink "$path.cfperl";
675	unlink "$path.pst";	1044	unlink "$path.pst";
676	};	1045	};
677		1046
678	*cf::mapsupport::on_swapin =
679	*cf::mapsupport::on_load = sub {
680	my ($map) = @_;
681
682	my $path = $map->tmpname;
683	$path = $map->path unless defined $path;
684
685	open my $fh, "<:raw", "$path.cfperl"
686	or return; # no perl data
687
688	my $data = Storable::thaw do { local $/; <$fh> };
689
690	$data->{version} <= 1
691	or return; # too new
692
693	$map->_set_obs ($data->{obs});
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
697		1048
698	#############################################################################	1049	#############################################################################
699	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
700		1051
701	sub all_objects(@) {	1052	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
703	}	1054	}
704		1055
705	attach_to_players	1056	# TODO: compatibility cruft, remove when no longer needed
		1057	cf::player->attach (
706	on_load => sub {	1058	on_load => sub {
707	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
708		1060
709	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
712		1064
713	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
714	}	1066	}
715	}	1067	}
716	},	1068	},
717	;	1069	);
718		1070
719	#############################################################################	1071	#############################################################################
720	# core extensions - in perl
721		1072
		1073	=head2 CORE EXTENSIONS
		1074
		1075	Functions and methods that extend core crossfire objects.
		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
		1083	=over 4
		1084
722	=item cf::player::exists $login	1085	=item cf::player::find $login
723		1086
724	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
725		1088
726	=cut	1089	=cut
727		1090
728	sub cf::player::exists($) {	1091	sub playerdir($) {
729	cf::player::find $_[0]	1092	cf::localdir
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	. "/"
		1094	. cf::playerdir
		1095	. "/"
		1096	. (ref $_[0] ? $_[0]->ob->name : $_[0])
731	}	1097	}
732		1098
		1099	sub path($) {
		1100	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1101
		1102	(playerdir $login) . "/$login.pl"
		1103	}
		1104
		1105	sub find_active($) {
		1106	$cf::PLAYER{$_[0]}
		1107	and $cf::PLAYER{$_[0]}->active
		1108	and $cf::PLAYER{$_[0]}
		1109	}
		1110
		1111	sub exists($) {
		1112	my ($login) = @_;
		1113
		1114	$cf::PLAYER{$login}
		1115	or cf::sync_job { !aio_stat $login }
		1116	}
		1117
		1118	sub find($) {
		1119	return $cf::PLAYER{$_[0]} || do {
		1120	my $login = $_[0];
		1121
		1122	my $guard = cf::lock_acquire "user_find:$login";
		1123
		1124	$cf::PLAYER{$login} ||= (load_pl path $login or return);
		1125	};
		1126	}
		1127
		1128	sub save($) {
		1129	my ($pl) = @_;
		1130
		1131	return if $pl->{deny_save};
		1132
		1133	my $path = path $pl;
		1134	my $guard = cf::lock_acquire "user_save:$path";
		1135
		1136	return if $pl->{deny_save};
		1137	$pl->{last_save} = $cf::RUNTIME;
		1138
		1139	Coro::cede;
		1140	$pl->save_pl ($path);
		1141	Coro::cede;
		1142	}
		1143
		1144	sub new($) {
		1145	my ($login) = @_;
		1146
		1147	my $self = create;
		1148
		1149	$self->ob->name ($login);
		1150	$self->{deny_save} = 1;
		1151
		1152	$cf::PLAYER{$login} = $self;
		1153
		1154	$self
		1155	}
		1156
		1157	sub quit_character {
		1158	my ($pl) = @_;
		1159
		1160	$pl->{deny_save} = 1;
		1161	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1162
		1163	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1164	$pl->deactivate;
		1165	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1166	$pl->ns->destroy if $pl->ns;
		1167
		1168	my $path = playerdir $pl;
		1169	my $temp = "$path~$cf::RUNTIME~deleting~";
		1170	IO::AIO::aio_rename $path, $temp, sub {
		1171	delete $cf::PLAYER{$pl->ob->name};
		1172	$pl->destroy;
		1173
		1174	IO::AIO::aio_rmtree $temp;
		1175	};
		1176	}
		1177
		1178	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1179
		1180	Sends an ext reply to the player.
		1181
		1182	=cut
		1183
		1184	sub ext_reply($$$%) {
		1185	my ($self, $id, %msg) = @_;
		1186
		1187	$msg{msgid} = $id;
		1188
		1189	$self->send ("ext " . cf::to_json \%msg);
		1190	}
		1191
		1192	package cf;
		1193
		1194	=back
		1195
		1196
		1197	=head3 cf::map
		1198
		1199	=over 4
		1200
		1201	=cut
		1202
		1203	package cf::map;
		1204
		1205	use Fcntl;
		1206	use Coro::AIO;
		1207
		1208	our $MAX_RESET = 3600;
		1209	our $DEFAULT_RESET = 3000;
		1210
		1211	sub generate_random_map {
		1212	my ($path, $rmp) = @_;
		1213
		1214	# mit "rum" bekleckern, nicht
		1215	cf::map::_create_random_map
		1216	$path,
		1217	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1218	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1219	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1220	$rmp->{exit_on_final_map},
		1221	$rmp->{xsize}, $rmp->{ysize},
		1222	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1223	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1224	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1225	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1226	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1227	(cf::region::find $rmp->{region})
		1228	}
		1229
		1230	# and all this just because we cannot iterate over
		1231	# all maps in C++...
		1232	sub change_all_map_light {
		1233	my ($change) = @_;
		1234
		1235	$_->change_map_light ($change)
		1236	for grep $_->outdoor, values %cf::MAP;
		1237	}
		1238
		1239	sub try_load_header($) {
		1240	my ($path) = @_;
		1241
		1242	utf8::encode $path;
		1243	aio_open $path, O_RDONLY, 0
		1244	or return;
		1245
		1246	my $map = cf::map::new
		1247	or return;
		1248
		1249	# for better error messages only, will be overwritten
		1250	$map->path ($path);
		1251
		1252	$map->load_header ($path)
		1253	or return;
		1254
		1255	$map->{load_path} = $path;
		1256
		1257	$map
		1258	}
		1259
		1260	sub find;
		1261	sub find {
		1262	my ($path, $origin) = @_;
		1263
		1264	#warn "find<$path,$origin>\n";#d#
		1265
		1266	$path = new cf::path $path, $origin && $origin->path;
		1267	my $key = $path->as_string;
		1268
		1269	cf::lock_wait "map_find:$key";
		1270
		1271	$cf::MAP{$key} || do {
		1272	my $guard = cf::lock_acquire "map_find:$key";
		1273
		1274	# do it the slow way
		1275	my $map = try_load_header $path->save_path;
		1276
		1277	Coro::cede;
		1278
		1279	if ($map) {
		1280	$map->last_access ((delete $map->{last_access})
		1281	|| $cf::RUNTIME); #d#
		1282	# safety
		1283	$map->{instantiate_time} = $cf::RUNTIME
		1284	if $map->{instantiate_time} > $cf::RUNTIME;
		1285	} else {
		1286	if (my $rmp = $path->random_map_params) {
		1287	$map = generate_random_map $key, $rmp;
		1288	} else {
		1289	$map = try_load_header $path->load_path;
		1290	}
		1291
		1292	$map or return;
		1293
		1294	$map->{load_original} = 1;
		1295	$map->{instantiate_time} = $cf::RUNTIME;
		1296	$map->last_access ($cf::RUNTIME);
		1297	$map->instantiate;
		1298
		1299	# per-player maps become, after loading, normal maps
		1300	$map->per_player (0) if $path->{user_rel};
		1301	}
		1302
		1303	$map->path ($key);
		1304	$map->{path} = $path;
		1305	$map->{last_save} = $cf::RUNTIME;
		1306
		1307	Coro::cede;
		1308
		1309	if ($map->should_reset) {
		1310	$map->reset;
		1311	undef $guard;
		1312	$map = find $path
		1313	or return;
		1314	}
		1315
		1316	$cf::MAP{$key} = $map
		1317	}
		1318	}
		1319
		1320	sub load {
		1321	my ($self) = @_;
		1322
		1323	my $path = $self->{path};
		1324	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1325
		1326	return if $self->in_memory != cf::MAP_SWAPPED;
		1327
		1328	$self->in_memory (cf::MAP_LOADING);
		1329
		1330	$self->alloc;
		1331	$self->load_objects ($self->{load_path}, 1)
		1332	or return;
		1333
		1334	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1335	if delete $self->{load_original};
		1336
		1337	if (my $uniq = $path->uniq_path) {
		1338	utf8::encode $uniq;
		1339	if (aio_open $uniq, O_RDONLY, 0) {
		1340	$self->clear_unique_items;
		1341	$self->load_objects ($uniq, 0);
		1342	}
		1343	}
		1344
		1345	Coro::cede;
		1346
		1347	# now do the right thing for maps
		1348	$self->link_multipart_objects;
		1349
		1350	if ($self->{path}->is_style_map) {
		1351	$self->{deny_save} = 1;
		1352	$self->{deny_reset} = 1;
		1353	} else {
		1354	$self->fix_auto_apply;
		1355	$self->decay_objects;
		1356	$self->update_buttons;
		1357	$self->set_darkness_map;
		1358	$self->difficulty ($self->estimate_difficulty)
		1359	unless $self->difficulty;
		1360	$self->activate;
		1361	}
		1362
		1363	Coro::cede;
		1364
		1365	$self->in_memory (cf::MAP_IN_MEMORY);
		1366	}
		1367
		1368	sub find_sync {
		1369	my ($path, $origin) = @_;
		1370
		1371	cf::sync_job { cf::map::find $path, $origin }
		1372	}
		1373
		1374	sub do_load_sync {
		1375	my ($map) = @_;
		1376
		1377	cf::sync_job { $map->load };
		1378	}
		1379
		1380	sub save {
		1381	my ($self) = @_;
		1382
		1383	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1384
		1385	$self->{last_save} = $cf::RUNTIME;
		1386
		1387	return unless $self->dirty;
		1388
		1389	my $save = $self->{path}->save_path; utf8::encode $save;
		1390	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1391
		1392	$self->{load_path} = $save;
		1393
		1394	return if $self->{deny_save};
		1395
		1396	local $self->{last_access} = $self->last_access;#d#
		1397
		1398	cf::async {
		1399	$_->contr->save for $self->players;
		1400	};
		1401
		1402	if ($uniq) {
		1403	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1404	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1405	} else {
		1406	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1407	}
		1408	}
		1409
		1410	sub swap_out {
		1411	my ($self) = @_;
		1412
		1413	# save first because save cedes
		1414	$self->save;
		1415
		1416	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1417
		1418	return if $self->players;
		1419	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1420	return if $self->{deny_save};
		1421
		1422	$self->clear;
		1423	$self->in_memory (cf::MAP_SWAPPED);
		1424	}
		1425
		1426	sub reset_at {
		1427	my ($self) = @_;
		1428
		1429	# TODO: safety, remove and allow resettable per-player maps
		1430	return 1e99 if $self->{path}{user_rel};
		1431	return 1e99 if $self->{deny_reset};
		1432
		1433	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1434	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1435
		1436	$time + $to
		1437	}
		1438
		1439	sub should_reset {
		1440	my ($self) = @_;
		1441
		1442	$self->reset_at <= $cf::RUNTIME
		1443	}
		1444
		1445	sub unlink_save {
		1446	my ($self) = @_;
		1447
		1448	utf8::encode (my $save = $self->{path}->save_path);
		1449	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1450	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1451	}
		1452
		1453	sub rename {
		1454	my ($self, $new_path) = @_;
		1455
		1456	$self->unlink_save;
		1457
		1458	delete $cf::MAP{$self->path};
		1459	$self->{path} = new cf::path $new_path;
		1460	$self->path ($self->{path}->as_string);
		1461	$cf::MAP{$self->path} = $self;
		1462
		1463	$self->save;
		1464	}
		1465
		1466	sub reset {
		1467	my ($self) = @_;
		1468
		1469	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1470
		1471	return if $self->players;
		1472	return if $self->{path}{user_rel};#d#
		1473
		1474	warn "resetting map ", $self->path;#d#
		1475
		1476	delete $cf::MAP{$self->path};
		1477
		1478	$_->clear_links_to ($self) for values %cf::MAP;
		1479
		1480	$self->unlink_save;
		1481	$self->destroy;
		1482	}
		1483
		1484	my $nuke_counter = "aaaa";
		1485
		1486	sub nuke {
		1487	my ($self) = @_;
		1488
		1489	$self->{deny_save} = 1;
		1490	$self->reset_timeout (1);
		1491	$self->rename ("{nuke}/" . ($nuke_counter++));
		1492	$self->reset; # polite request, might not happen
		1493	}
		1494
		1495	sub customise_for {
		1496	my ($map, $ob) = @_;
		1497
		1498	if ($map->per_player) {
		1499	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1500	}
		1501
		1502	$map
		1503	}
		1504
		1505	sub emergency_save {
		1506	my $freeze_guard = cf::freeze_mainloop;
		1507
		1508	warn "enter emergency perl save\n";
		1509
		1510	cf::sync_job {
		1511	warn "begin emergency player save\n";
		1512	$_->save for values %cf::PLAYER;
		1513	warn "end emergency player save\n";
		1514
		1515	warn "begin emergency map save\n";
		1516	$_->save for values %cf::MAP;
		1517	warn "end emergency map save\n";
		1518	};
		1519
		1520	warn "leave emergency perl save\n";
		1521	}
		1522
		1523	package cf;
		1524
		1525	=back
		1526
		1527
		1528	=head3 cf::object::player
		1529
		1530	=over 4
		1531
733	=item $player->reply ($npc, $msg[, $flags])	1532	=item $player_object->reply ($npc, $msg[, $flags])
734		1533
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1534	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	1535	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1536	dialogue with the given NPC character.
738		1537
739	=cut	1538	=cut
740		1539
741	# rough implementation of a future "reply" method that works	1540	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1541	# with dialog boxes.
		1542	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1543	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1544	my ($self, $npc, $msg, $flags) = @_;
745		1545
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1546	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1547
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1551	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1552	$self->message ($msg, $flags);
753	}	1553	}
754	}	1554	}
755		1555
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1556	=item $player_object->may ("access")
757		1557
758	Sends an ext reply to the player.	1558	Returns wether the given player is authorized to access resource "access"
		1559	(e.g. "command_wizcast").
759		1560
760	=cut	1561	=cut
761		1562
762	sub cf::player::ext_reply($$$%) {	1563	sub cf::object::player::may {
		1564	my ($self, $access) = @_;
		1565
		1566	$self->flag (cf::FLAG_WIZ) ||
		1567	(ref $cf::CFG{"may_$access"}
		1568	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1569	: $cf::CFG{"may_$access"})
		1570	}
		1571
		1572	=item $player_object->enter_link
		1573
		1574	Freezes the player and moves him/her to a special map (C<{link}>).
		1575
		1576	The player should be reaosnably safe there for short amounts of time. You
		1577	I<MUST> call C<leave_link> as soon as possible, though.
		1578
		1579	=item $player_object->leave_link ($map, $x, $y)
		1580
		1581	Moves the player out of the specila link map onto the given map. If the
		1582	map is not valid (or omitted), the player will be moved back to the
		1583	location he/she was before the call to C<enter_link>, or, if that fails,
		1584	to the emergency map position.
		1585
		1586	Might block.
		1587
		1588	=cut
		1589
		1590	sub cf::object::player::enter_link {
		1591	my ($self) = @_;
		1592
		1593	$self->deactivate_recursive;
		1594
		1595	return if $self->map == $LINK_MAP;
		1596
		1597	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1598	if $self->map;
		1599
		1600	$self->enter_map ($LINK_MAP, 20, 20);
		1601	}
		1602
		1603	sub cf::object::player::leave_link {
		1604	my ($self, $map, $x, $y) = @_;
		1605
		1606	my $link_pos = delete $self->{_link_pos};
		1607
		1608	unless ($map) {
		1609	# restore original map position
		1610	($map, $x, $y) = @{ $link_pos || [] };
		1611	$map = cf::map::find $map;
		1612
		1613	unless ($map) {
		1614	($map, $x, $y) = @$EMERGENCY_POSITION;
		1615	$map = cf::map::find $map
		1616	or die "FATAL: cannot load emergency map\n";
		1617	}
		1618	}
		1619
		1620	($x, $y) = (-1, -1)
		1621	unless (defined $x) && (defined $y);
		1622
		1623	# use -1 or undef as default coordinates, not 0, 0
		1624	($x, $y) = ($map->enter_x, $map->enter_y)
		1625	if $x <=0 && $y <= 0;
		1626
		1627	$map->load;
		1628
		1629	return unless $self->contr->active;
		1630	$self->activate_recursive;
		1631	$self->enter_map ($map, $x, $y);
		1632	}
		1633
		1634	cf::player->attach (
		1635	on_logout => sub {
		1636	my ($pl) = @_;
		1637
		1638	# abort map switching before logout
		1639	if ($pl->ob->{_link_pos}) {
		1640	cf::sync_job {
		1641	$pl->ob->leave_link
		1642	};
		1643	}
		1644	},
		1645	on_login => sub {
		1646	my ($pl) = @_;
		1647
		1648	# try to abort aborted map switching on player login :)
		1649	# should happen only on crashes
		1650	if ($pl->ob->{_link_pos}) {
		1651	$pl->ob->enter_link;
		1652	(async {
		1653	# we need this sleep as the login has a concurrent enter_exit running
		1654	# and this sleep increases chances of the player not ending up in scorn
		1655	$pl->ob->reply (undef,
		1656	"There was an internal problem at your last logout, "
		1657	. "the server will try to bring you to your intended destination in a second.",
		1658	cf::NDI_RED);
		1659	Coro::Timer::sleep 1;
		1660	$pl->ob->leave_link;
		1661	})->prio (2);
		1662	}
		1663	},
		1664	);
		1665
		1666	=item $player_object->goto ($path, $x, $y)
		1667
		1668	=cut
		1669
		1670	sub cf::object::player::goto {
		1671	my ($self, $path, $x, $y) = @_;
		1672
		1673	$self->enter_link;
		1674
		1675	(async {
		1676	$path = new cf::path $path;
		1677
		1678	my $map = cf::map::find $path->as_string;
		1679	$map = $map->customise_for ($self) if $map;
		1680
		1681	# warn "entering ", $map->path, " at ($x, $y)\n"
		1682	# if $map;
		1683
		1684	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1685
		1686	$self->leave_link ($map, $x, $y);
		1687	})->prio (1);
		1688	}
		1689
		1690	=item $player_object->enter_exit ($exit_object)
		1691
		1692	=cut
		1693
		1694	sub parse_random_map_params {
		1695	my ($spec) = @_;
		1696
		1697	my $rmp = { # defaults
		1698	xsize => 10,
		1699	ysize => 10,
		1700	};
		1701
		1702	for (split /\n/, $spec) {
		1703	my ($k, $v) = split /\s+/, $_, 2;
		1704
		1705	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1706	}
		1707
		1708	$rmp
		1709	}
		1710
		1711	sub prepare_random_map {
		1712	my ($exit) = @_;
		1713
		1714	# all this does is basically replace the /! path by
		1715	# a new random map path (?random/...) with a seed
		1716	# that depends on the exit object
		1717
		1718	my $rmp = parse_random_map_params $exit->msg;
		1719
		1720	if ($exit->map) {
		1721	$rmp->{region} = $exit->map->region_name;
		1722	$rmp->{origin_map} = $exit->map->path;
		1723	$rmp->{origin_x} = $exit->x;
		1724	$rmp->{origin_y} = $exit->y;
		1725	}
		1726
		1727	$rmp->{random_seed} ||= $exit->random_seed;
		1728
		1729	my $data = cf::to_json $rmp;
		1730	my $md5 = Digest::MD5::md5_hex $data;
		1731
		1732	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1733	aio_write $fh, 0, (length $data), $data, 0;
		1734
		1735	$exit->slaying ("?random/$md5");
		1736	$exit->msg (undef);
		1737	}
		1738	}
		1739
		1740	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1741	my ($self, $exit) = @_;
764		1742
765	$msg{msgid} = $id;	1743	return unless $self->type == cf::PLAYER;
766		1744
767	$self->send ("ext " . to_json \%msg);	1745	$self->enter_link;
768	}
769		1746
770	#############################################################################	1747	(async {
771	# map scripting support	1748	$self->deactivate_recursive; # just to be sure
		1749	unless (eval {
		1750	prepare_random_map $exit
		1751	if $exit->slaying eq "/!";
		1752
		1753	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1754	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1755
		1756	1;
		1757	}) {
		1758	$self->message ("Something went wrong deep within the crossfire server. "
		1759	. "I'll try to bring you back to the map you were before. "
		1760	. "Please report this to the dungeon master",
		1761	cf::NDI_UNIQUE | cf::NDI_RED);
		1762
		1763	warn "ERROR in enter_exit: $@";
		1764	$self->leave_link;
		1765	}
		1766	})->prio (1);
		1767	}
		1768
		1769	=head3 cf::client
		1770
		1771	=over 4
		1772
		1773	=item $client->send_drawinfo ($text, $flags)
		1774
		1775	Sends a drawinfo packet to the client. Circumvents output buffering so
		1776	should not be used under normal circumstances.
		1777
		1778	=cut
		1779
		1780	sub cf::client::send_drawinfo {
		1781	my ($self, $text, $flags) = @_;
		1782
		1783	utf8::encode $text;
		1784	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1785	}
		1786
		1787
		1788	=item $success = $client->query ($flags, "text", \&cb)
		1789
		1790	Queues a query to the client, calling the given callback with
		1791	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1792	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1793
		1794	Queries can fail, so check the return code. Or don't, as queries will become
		1795	reliable at some point in the future.
		1796
		1797	=cut
		1798
		1799	sub cf::client::query {
		1800	my ($self, $flags, $text, $cb) = @_;
		1801
		1802	return unless $self->state == ST_PLAYING
		1803	|| $self->state == ST_SETUP
		1804	|| $self->state == ST_CUSTOM;
		1805
		1806	$self->state (ST_CUSTOM);
		1807
		1808	utf8::encode $text;
		1809	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1810
		1811	$self->send_packet ($self->{query_queue}[0][0])
		1812	if @{ $self->{query_queue} } == 1;
		1813	}
		1814
		1815	cf::client->attach (
		1816	on_reply => sub {
		1817	my ($ns, $msg) = @_;
		1818
		1819	# this weird shuffling is so that direct followup queries
		1820	# get handled first
		1821	my $queue = delete $ns->{query_queue}
		1822	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1823
		1824	(shift @$queue)->[1]->($msg);
		1825
		1826	push @{ $ns->{query_queue} }, @$queue;
		1827
		1828	if (@{ $ns->{query_queue} } == @$queue) {
		1829	if (@$queue) {
		1830	$ns->send_packet ($ns->{query_queue}[0][0]);
		1831	} else {
		1832	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1833	}
		1834	}
		1835	},
		1836	);
		1837
		1838	=item $client->async (\&cb)
		1839
		1840	Create a new coroutine, running the specified callback. The coroutine will
		1841	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1842	or loss of connection).
		1843
		1844	=cut
		1845
		1846	sub cf::client::async {
		1847	my ($self, $cb) = @_;
		1848
		1849	my $coro = &Coro::async ($cb);
		1850
		1851	$coro->on_destroy (sub {
		1852	delete $self->{_coro}{$coro+0};
		1853	});
		1854
		1855	$self->{_coro}{$coro+0} = $coro;
		1856
		1857	$coro
		1858	}
		1859
		1860	cf::client->attach (
		1861	on_destroy => sub {
		1862	my ($ns) = @_;
		1863
		1864	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1865	},
		1866	);
		1867
		1868	=back
		1869
		1870
		1871	=head2 SAFE SCRIPTING
		1872
		1873	Functions that provide a safe environment to compile and execute
		1874	snippets of perl code without them endangering the safety of the server
		1875	itself. Looping constructs, I/O operators and other built-in functionality
		1876	is not available in the safe scripting environment, and the number of
		1877	functions and methods that can be called is greatly reduced.
		1878
		1879	=cut
772		1880
773	our $safe = new Safe "safe";	1881	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	1882	our $safe_hole = new Safe::Hole;
775		1883
776	$SIG{FPE} = 'IGNORE';	1884	$SIG{FPE} = 'IGNORE';
777		1885
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1886	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		1887
780	# here we export the classes and methods available to script code	1888	# here we export the classes and methods available to script code
781		1889
		1890	=pod
		1891
		1892	The following fucntions and emthods are available within a safe environment:
		1893
		1894	cf::object contr pay_amount pay_player map
		1895	cf::object::player player
		1896	cf::player peaceful
		1897	cf::map trigger
		1898
		1899	=cut
		1900
782	for (	1901	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	1902	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	1903	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	1904	["cf::player" => qw(peaceful)],
		1905	["cf::map" => qw(trigger)],
786	) {	1906	) {
787	no strict 'refs';	1907	no strict 'refs';
788	my ($pkg, @funs) = @$_;	1908	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1909	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	1910	for @funs;
791	}	1911	}
		1912
		1913	=over 4
		1914
		1915	=item @retval = safe_eval $code, [var => value, ...]
		1916
		1917	Compiled and executes the given perl code snippet. additional var/value
		1918	pairs result in temporary local (my) scalar variables of the given name
		1919	that are available in the code snippet. Example:
		1920
		1921	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1922
		1923	=cut
792		1924
793	sub safe_eval($;@) {	1925	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	1926	my ($code, %vars) = @_;
795		1927
796	my $qcode = $code;	1928	my $qcode = $code;
…		…
819	}	1951	}
820		1952
821	wantarray ? @res : $res[0]	1953	wantarray ? @res : $res[0]
822	}	1954	}
823		1955
		1956	=item cf::register_script_function $function => $cb
		1957
		1958	Register a function that can be called from within map/npc scripts. The
		1959	function should be reasonably secure and should be put into a package name
		1960	like the extension.
		1961
		1962	Example: register a function that gets called whenever a map script calls
		1963	C<rent::overview>, as used by the C<rent> extension.
		1964
		1965	cf::register_script_function "rent::overview" => sub {
		1966	...
		1967	};
		1968
		1969	=cut
		1970
824	sub register_script_function {	1971	sub register_script_function {
825	my ($fun, $cb) = @_;	1972	my ($fun, $cb) = @_;
826		1973
827	no strict 'refs';	1974	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1975	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	1976	}
830		1977
		1978	=back
		1979
		1980	=cut
		1981
		1982	#############################################################################
		1983
		1984	=head2 EXTENSION DATABASE SUPPORT
		1985
		1986	Crossfire maintains a very simple database for extension use. It can
		1987	currently store anything that can be serialised using Storable, which
		1988	excludes objects.
		1989
		1990	The parameter C<$family> should best start with the name of the extension
		1991	using it, it should be unique.
		1992
		1993	=over 4
		1994
		1995	=item $hashref = cf::db_get $family
		1996
		1997	Return a hashref for use by the extension C<$family>, which can be
		1998	modified. After modifications, you have to call C<cf::db_dirty> or
		1999	C<cf::db_sync>.
		2000
		2001	=item $value = cf::db_get $family => $key
		2002
		2003	Returns a single value from the database
		2004
		2005	=item cf::db_put $family => $hashref
		2006
		2007	Stores the given family hashref into the database. Updates are delayed, if
		2008	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2009
		2010	=item cf::db_put $family => $key => $value
		2011
		2012	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2013	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2014
		2015	=item cf::db_dirty
		2016
		2017	Marks the database as dirty, to be updated at a later time.
		2018
		2019	=item cf::db_sync
		2020
		2021	Immediately write the database to disk I<if it is dirty>.
		2022
		2023	=cut
		2024
		2025	our $DB;
		2026
		2027	{
		2028	my $path = cf::localdir . "/database.pst";
		2029
		2030	sub db_load() {
		2031	$DB = stat $path ? Storable::retrieve $path : { };
		2032	}
		2033
		2034	my $pid;
		2035
		2036	sub db_save() {
		2037	waitpid $pid, 0 if $pid;
		2038	if (0 == ($pid = fork)) {
		2039	$DB->{_meta}{version} = 1;
		2040	Storable::nstore $DB, "$path~";
		2041	rename "$path~", $path;
		2042	cf::_exit 0 if defined $pid;
		2043	}
		2044	}
		2045
		2046	my $dirty;
		2047
		2048	sub db_sync() {
		2049	db_save if $dirty;
		2050	undef $dirty;
		2051	}
		2052
		2053	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2054	db_sync;
		2055	});
		2056
		2057	sub db_dirty() {
		2058	$dirty = 1;
		2059	$idle->start;
		2060	}
		2061
		2062	sub db_get($;$) {
		2063	@_ >= 2
		2064	? $DB->{$_[0]}{$_[1]}
		2065	: ($DB->{$_[0]} ||= { })
		2066	}
		2067
		2068	sub db_put($$;$) {
		2069	if (@_ >= 3) {
		2070	$DB->{$_[0]}{$_[1]} = $_[2];
		2071	} else {
		2072	$DB->{$_[0]} = $_[1];
		2073	}
		2074	db_dirty;
		2075	}
		2076
		2077	cf::global->attach (
		2078	prio => 10000,
		2079	on_cleanup => sub {
		2080	db_sync;
		2081	},
		2082	);
		2083	}
		2084
831	#############################################################################	2085	#############################################################################
832	# the server's main()	2086	# the server's main()
833		2087
		2088	sub cfg_load {
		2089	open my $fh, "<:utf8", cf::confdir . "/config"
		2090	or return;
		2091
		2092	local $/;
		2093	*CFG = YAML::Syck::Load <$fh>;
		2094
		2095	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2096
		2097	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2098	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2099
		2100	if (exists $CFG{mlockall}) {
		2101	eval {
		2102	$CFG{mlockall} ? &mlockall : &munlockall
		2103	and die "WARNING: m(un)lockall failed: $!\n";
		2104	};
		2105	warn $@ if $@;
		2106	}
		2107	}
		2108
834	sub main {	2109	sub main {
		2110	# we must not ever block the main coroutine
		2111	local $Coro::idle = sub {
		2112	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2113	async { Event::one_event };
		2114	};
		2115
		2116	cfg_load;
		2117	db_load;
		2118	load_extensions;
835	Event::loop;	2119	Event::loop;
836	}	2120	}
837		2121
838	#############################################################################	2122	#############################################################################
839	# initialisation	2123	# initialisation
840		2124
		2125	sub reload() {
		2126	# can/must only be called in main
		2127	if ($Coro::current != $Coro::main) {
		2128	warn "can only reload from main coroutine\n";
		2129	return;
		2130	}
		2131
		2132	warn "reloading...";
		2133
		2134	my $guard = freeze_mainloop;
		2135	cf::emergency_save;
		2136
		2137	eval {
		2138	# if anything goes wrong in here, we should simply crash as we already saved
		2139
		2140	# cancel all watchers
		2141	for (Event::all_watchers) {
		2142	$_->cancel if $_->data & WF_AUTOCANCEL;
		2143	}
		2144
		2145	# cancel all extension coros
		2146	$_->cancel for values %EXT_CORO;
		2147	%EXT_CORO = ();
		2148
		2149	# unload all extensions
		2150	for (@exts) {
		2151	warn "unloading <$_>";
		2152	unload_extension $_;
		2153	}
		2154
		2155	# unload all modules loaded from $LIBDIR
		2156	while (my ($k, $v) = each %INC) {
		2157	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2158
		2159	warn "removing <$k>";
		2160	delete $INC{$k};
		2161
		2162	$k =~ s/\.pm$//;
		2163	$k =~ s/\//::/g;
		2164
		2165	if (my $cb = $k->can ("unload_module")) {
		2166	$cb->();
		2167	}
		2168
		2169	Symbol::delete_package $k;
		2170	}
		2171
		2172	# sync database to disk
		2173	cf::db_sync;
		2174	IO::AIO::flush;
		2175
		2176	# get rid of safe::, as good as possible
		2177	Symbol::delete_package "safe::$_"
		2178	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2179
		2180	# remove register_script_function callbacks
		2181	# TODO
		2182
		2183	# unload cf.pm "a bit"
		2184	delete $INC{"cf.pm"};
		2185
		2186	# don't, removes xs symbols, too,
		2187	# and global variables created in xs
		2188	#Symbol::delete_package __PACKAGE__;
		2189
		2190	# reload cf.pm
		2191	warn "reloading cf.pm";
		2192	require cf;
		2193	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2194
		2195	# load config and database again
		2196	cf::cfg_load;
		2197	cf::db_load;
		2198
		2199	# load extensions
		2200	warn "load extensions";
		2201	cf::load_extensions;
		2202
		2203	# reattach attachments to objects
		2204	warn "reattach";
		2205	_global_reattach;
		2206	reattach $_ for values %MAP;
		2207	};
		2208
		2209	if ($@) {
		2210	warn $@;
		2211	warn "error while reloading, exiting.";
		2212	exit 1;
		2213	}
		2214
		2215	warn "reloaded successfully";
		2216	};
		2217
		2218	#############################################################################
		2219
		2220	unless ($LINK_MAP) {
		2221	$LINK_MAP = cf::map::new;
		2222
		2223	$LINK_MAP->width (41);
		2224	$LINK_MAP->height (41);
		2225	$LINK_MAP->alloc;
		2226	$LINK_MAP->path ("{link}");
		2227	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2228	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2229
		2230	# dirty hack because... archetypes are not yet loaded
		2231	Event->timer (
		2232	after => 10,
		2233	cb => sub {
		2234	$_[0]->w->cancel;
		2235
		2236	# provide some exits "home"
		2237	my $exit = cf::object::new "exit";
		2238
		2239	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2240	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2241	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2242
		2243	$LINK_MAP->insert ($exit->clone, 19, 19);
		2244	$LINK_MAP->insert ($exit->clone, 19, 20);
		2245	$LINK_MAP->insert ($exit->clone, 19, 21);
		2246	$LINK_MAP->insert ($exit->clone, 20, 19);
		2247	$LINK_MAP->insert ($exit->clone, 20, 21);
		2248	$LINK_MAP->insert ($exit->clone, 21, 19);
		2249	$LINK_MAP->insert ($exit->clone, 21, 20);
		2250	$LINK_MAP->insert ($exit->clone, 21, 21);
		2251
		2252	$exit->destroy;
		2253	});
		2254
		2255	$LINK_MAP->{deny_save} = 1;
		2256	$LINK_MAP->{deny_reset} = 1;
		2257
		2258	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2259	}
		2260
841	register "<global>", __PACKAGE__;	2261	register "<global>", __PACKAGE__;
842		2262
		2263	register_command "reload" => sub {
		2264	my ($who, $arg) = @_;
		2265
		2266	if ($who->flag (FLAG_WIZ)) {
		2267	$who->message ("start of reload.");
		2268	reload;
		2269	$who->message ("end of reload.");
		2270	}
		2271	};
		2272
843	unshift @INC, $LIBDIR;	2273	unshift @INC, $LIBDIR;
844		2274
845	load_extensions;
846
847	$TICK_WATCHER = Event->timer (	2275	$TICK_WATCHER = Event->timer (
		2276	reentrant => 0,
848	prio => 1,	2277	prio => 0,
849	at => $NEXT_TICK || 1,	2278	at => $NEXT_TICK || $TICK,
		2279	data => WF_AUTOCANCEL,
850	cb => sub {	2280	cb => sub {
851	cf::server_tick; # one server iteration	2281	cf::server_tick; # one server iteration
852		2282	$RUNTIME += $TICK;
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2283	$NEXT_TICK += $TICK;
855		2284
856	# if we are delayed by four ticks, skip them all	2285	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2286	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2287
859	$TICK_WATCHER->at ($NEXT_TICK);	2288	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2289	$TICK_WATCHER->start;
861	},	2290	},
862	);	2291	);
863		2292
		2293	IO::AIO::max_poll_time $TICK * 0.2;
		2294
		2295	Event->io (
		2296	fd => IO::AIO::poll_fileno,
		2297	poll => 'r',
		2298	prio => 5,
		2299	data => WF_AUTOCANCEL,
		2300	cb => \&IO::AIO::poll_cb,
		2301	);
		2302
		2303	Event->timer (
		2304	data => WF_AUTOCANCEL,
		2305	after => 0,
		2306	interval => 10,
		2307	cb => sub {
		2308	(Coro::unblock_sub {
		2309	write_runtime
		2310	or warn "ERROR: unable to write runtime file: $!";
		2311	})->();
		2312	},
		2313	);
		2314
		2315	END { cf::emergency_save }
		2316
864	1	2317	1
865		2318

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